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e78b80b1 DE |
1 | /* Intel PRO/1000 Linux driver |
2 | * Copyright(c) 1999 - 2014 Intel Corporation. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * The full GNU General Public License is included in this distribution in | |
14 | * the file called "COPYING". | |
15 | * | |
16 | * Contact Information: | |
17 | * Linux NICS <linux.nics@intel.com> | |
18 | * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
19 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
20 | */ | |
bc7f75fa | 21 | |
8544b9f7 BA |
22 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
23 | ||
bc7f75fa AK |
24 | #include <linux/module.h> |
25 | #include <linux/types.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/pci.h> | |
28 | #include <linux/vmalloc.h> | |
29 | #include <linux/pagemap.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/netdevice.h> | |
9fb7a5f7 | 32 | #include <linux/interrupt.h> |
bc7f75fa AK |
33 | #include <linux/tcp.h> |
34 | #include <linux/ipv6.h> | |
5a0e3ad6 | 35 | #include <linux/slab.h> |
bc7f75fa AK |
36 | #include <net/checksum.h> |
37 | #include <net/ip6_checksum.h> | |
bc7f75fa AK |
38 | #include <linux/ethtool.h> |
39 | #include <linux/if_vlan.h> | |
40 | #include <linux/cpu.h> | |
41 | #include <linux/smp.h> | |
e8db0be1 | 42 | #include <linux/pm_qos.h> |
23606cf5 | 43 | #include <linux/pm_runtime.h> |
111b9dc5 | 44 | #include <linux/aer.h> |
70c71606 | 45 | #include <linux/prefetch.h> |
bc7f75fa AK |
46 | |
47 | #include "e1000.h" | |
48 | ||
b3ccf267 | 49 | #define DRV_EXTRAVERSION "-k" |
c14c643b | 50 | |
8defe713 | 51 | #define DRV_VERSION "2.3.2" DRV_EXTRAVERSION |
bc7f75fa AK |
52 | char e1000e_driver_name[] = "e1000e"; |
53 | const char e1000e_driver_version[] = DRV_VERSION; | |
54 | ||
b3f4d599 | 55 | #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
56 | static int debug = -1; | |
57 | module_param(debug, int, 0); | |
58 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
59 | ||
bc7f75fa AK |
60 | static const struct e1000_info *e1000_info_tbl[] = { |
61 | [board_82571] = &e1000_82571_info, | |
62 | [board_82572] = &e1000_82572_info, | |
63 | [board_82573] = &e1000_82573_info, | |
4662e82b | 64 | [board_82574] = &e1000_82574_info, |
8c81c9c3 | 65 | [board_82583] = &e1000_82583_info, |
bc7f75fa AK |
66 | [board_80003es2lan] = &e1000_es2_info, |
67 | [board_ich8lan] = &e1000_ich8_info, | |
68 | [board_ich9lan] = &e1000_ich9_info, | |
f4187b56 | 69 | [board_ich10lan] = &e1000_ich10_info, |
a4f58f54 | 70 | [board_pchlan] = &e1000_pch_info, |
d3738bb8 | 71 | [board_pch2lan] = &e1000_pch2_info, |
2fbe4526 | 72 | [board_pch_lpt] = &e1000_pch_lpt_info, |
79849ebc | 73 | [board_pch_spt] = &e1000_pch_spt_info, |
bc7f75fa AK |
74 | }; |
75 | ||
84f4ee90 TI |
76 | struct e1000_reg_info { |
77 | u32 ofs; | |
78 | char *name; | |
79 | }; | |
80 | ||
84f4ee90 | 81 | static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
84f4ee90 TI |
82 | /* General Registers */ |
83 | {E1000_CTRL, "CTRL"}, | |
84 | {E1000_STATUS, "STATUS"}, | |
85 | {E1000_CTRL_EXT, "CTRL_EXT"}, | |
86 | ||
87 | /* Interrupt Registers */ | |
88 | {E1000_ICR, "ICR"}, | |
89 | ||
af667a29 | 90 | /* Rx Registers */ |
84f4ee90 | 91 | {E1000_RCTL, "RCTL"}, |
1e36052e BA |
92 | {E1000_RDLEN(0), "RDLEN"}, |
93 | {E1000_RDH(0), "RDH"}, | |
94 | {E1000_RDT(0), "RDT"}, | |
84f4ee90 TI |
95 | {E1000_RDTR, "RDTR"}, |
96 | {E1000_RXDCTL(0), "RXDCTL"}, | |
97 | {E1000_ERT, "ERT"}, | |
1e36052e BA |
98 | {E1000_RDBAL(0), "RDBAL"}, |
99 | {E1000_RDBAH(0), "RDBAH"}, | |
84f4ee90 TI |
100 | {E1000_RDFH, "RDFH"}, |
101 | {E1000_RDFT, "RDFT"}, | |
102 | {E1000_RDFHS, "RDFHS"}, | |
103 | {E1000_RDFTS, "RDFTS"}, | |
104 | {E1000_RDFPC, "RDFPC"}, | |
105 | ||
af667a29 | 106 | /* Tx Registers */ |
84f4ee90 | 107 | {E1000_TCTL, "TCTL"}, |
1e36052e BA |
108 | {E1000_TDBAL(0), "TDBAL"}, |
109 | {E1000_TDBAH(0), "TDBAH"}, | |
110 | {E1000_TDLEN(0), "TDLEN"}, | |
111 | {E1000_TDH(0), "TDH"}, | |
112 | {E1000_TDT(0), "TDT"}, | |
84f4ee90 TI |
113 | {E1000_TIDV, "TIDV"}, |
114 | {E1000_TXDCTL(0), "TXDCTL"}, | |
115 | {E1000_TADV, "TADV"}, | |
116 | {E1000_TARC(0), "TARC"}, | |
117 | {E1000_TDFH, "TDFH"}, | |
118 | {E1000_TDFT, "TDFT"}, | |
119 | {E1000_TDFHS, "TDFHS"}, | |
120 | {E1000_TDFTS, "TDFTS"}, | |
121 | {E1000_TDFPC, "TDFPC"}, | |
122 | ||
123 | /* List Terminator */ | |
f36bb6ca | 124 | {0, NULL} |
84f4ee90 TI |
125 | }; |
126 | ||
c6f3148c AK |
127 | /** |
128 | * __ew32_prepare - prepare to write to MAC CSR register on certain parts | |
129 | * @hw: pointer to the HW structure | |
130 | * | |
131 | * When updating the MAC CSR registers, the Manageability Engine (ME) could | |
132 | * be accessing the registers at the same time. Normally, this is handled in | |
133 | * h/w by an arbiter but on some parts there is a bug that acknowledges Host | |
134 | * accesses later than it should which could result in the register to have | |
135 | * an incorrect value. Workaround this by checking the FWSM register which | |
136 | * has bit 24 set while ME is accessing MAC CSR registers, wait if it is set | |
137 | * and try again a number of times. | |
138 | **/ | |
139 | s32 __ew32_prepare(struct e1000_hw *hw) | |
140 | { | |
141 | s32 i = E1000_ICH_FWSM_PCIM2PCI_COUNT; | |
142 | ||
143 | while ((er32(FWSM) & E1000_ICH_FWSM_PCIM2PCI) && --i) | |
144 | udelay(50); | |
145 | ||
146 | return i; | |
147 | } | |
148 | ||
149 | void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val) | |
150 | { | |
151 | if (hw->adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) | |
152 | __ew32_prepare(hw); | |
153 | ||
154 | writel(val, hw->hw_addr + reg); | |
155 | } | |
156 | ||
e921eb1a | 157 | /** |
84f4ee90 | 158 | * e1000_regdump - register printout routine |
e921eb1a BA |
159 | * @hw: pointer to the HW structure |
160 | * @reginfo: pointer to the register info table | |
161 | **/ | |
84f4ee90 TI |
162 | static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
163 | { | |
164 | int n = 0; | |
165 | char rname[16]; | |
166 | u32 regs[8]; | |
167 | ||
168 | switch (reginfo->ofs) { | |
169 | case E1000_RXDCTL(0): | |
170 | for (n = 0; n < 2; n++) | |
171 | regs[n] = __er32(hw, E1000_RXDCTL(n)); | |
172 | break; | |
173 | case E1000_TXDCTL(0): | |
174 | for (n = 0; n < 2; n++) | |
175 | regs[n] = __er32(hw, E1000_TXDCTL(n)); | |
176 | break; | |
177 | case E1000_TARC(0): | |
178 | for (n = 0; n < 2; n++) | |
179 | regs[n] = __er32(hw, E1000_TARC(n)); | |
180 | break; | |
181 | default: | |
ef456f85 JK |
182 | pr_info("%-15s %08x\n", |
183 | reginfo->name, __er32(hw, reginfo->ofs)); | |
84f4ee90 TI |
184 | return; |
185 | } | |
186 | ||
187 | snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); | |
ef456f85 | 188 | pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]); |
84f4ee90 TI |
189 | } |
190 | ||
f0c5dadf ET |
191 | static void e1000e_dump_ps_pages(struct e1000_adapter *adapter, |
192 | struct e1000_buffer *bi) | |
193 | { | |
194 | int i; | |
195 | struct e1000_ps_page *ps_page; | |
196 | ||
197 | for (i = 0; i < adapter->rx_ps_pages; i++) { | |
198 | ps_page = &bi->ps_pages[i]; | |
199 | ||
200 | if (ps_page->page) { | |
201 | pr_info("packet dump for ps_page %d:\n", i); | |
202 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, | |
203 | 16, 1, page_address(ps_page->page), | |
204 | PAGE_SIZE, true); | |
205 | } | |
206 | } | |
207 | } | |
208 | ||
e921eb1a | 209 | /** |
af667a29 | 210 | * e1000e_dump - Print registers, Tx-ring and Rx-ring |
e921eb1a BA |
211 | * @adapter: board private structure |
212 | **/ | |
84f4ee90 TI |
213 | static void e1000e_dump(struct e1000_adapter *adapter) |
214 | { | |
215 | struct net_device *netdev = adapter->netdev; | |
216 | struct e1000_hw *hw = &adapter->hw; | |
217 | struct e1000_reg_info *reginfo; | |
218 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
219 | struct e1000_tx_desc *tx_desc; | |
af667a29 | 220 | struct my_u0 { |
e885d762 BA |
221 | __le64 a; |
222 | __le64 b; | |
af667a29 | 223 | } *u0; |
84f4ee90 TI |
224 | struct e1000_buffer *buffer_info; |
225 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
226 | union e1000_rx_desc_packet_split *rx_desc_ps; | |
5f450212 | 227 | union e1000_rx_desc_extended *rx_desc; |
af667a29 | 228 | struct my_u1 { |
e885d762 BA |
229 | __le64 a; |
230 | __le64 b; | |
231 | __le64 c; | |
232 | __le64 d; | |
af667a29 | 233 | } *u1; |
84f4ee90 TI |
234 | u32 staterr; |
235 | int i = 0; | |
236 | ||
237 | if (!netif_msg_hw(adapter)) | |
238 | return; | |
239 | ||
240 | /* Print netdevice Info */ | |
241 | if (netdev) { | |
242 | dev_info(&adapter->pdev->dev, "Net device Info\n"); | |
ef456f85 | 243 | pr_info("Device Name state trans_start last_rx\n"); |
e5fe2541 BA |
244 | pr_info("%-15s %016lX %016lX %016lX\n", netdev->name, |
245 | netdev->state, netdev->trans_start, netdev->last_rx); | |
84f4ee90 TI |
246 | } |
247 | ||
248 | /* Print Registers */ | |
249 | dev_info(&adapter->pdev->dev, "Register Dump\n"); | |
ef456f85 | 250 | pr_info(" Register Name Value\n"); |
84f4ee90 TI |
251 | for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
252 | reginfo->name; reginfo++) { | |
253 | e1000_regdump(hw, reginfo); | |
254 | } | |
255 | ||
af667a29 | 256 | /* Print Tx Ring Summary */ |
84f4ee90 | 257 | if (!netdev || !netif_running(netdev)) |
fe1e980f | 258 | return; |
84f4ee90 | 259 | |
af667a29 | 260 | dev_info(&adapter->pdev->dev, "Tx Ring Summary\n"); |
ef456f85 | 261 | pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
84f4ee90 | 262 | buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
ef456f85 JK |
263 | pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n", |
264 | 0, tx_ring->next_to_use, tx_ring->next_to_clean, | |
265 | (unsigned long long)buffer_info->dma, | |
266 | buffer_info->length, | |
267 | buffer_info->next_to_watch, | |
268 | (unsigned long long)buffer_info->time_stamp); | |
84f4ee90 | 269 | |
af667a29 | 270 | /* Print Tx Ring */ |
84f4ee90 TI |
271 | if (!netif_msg_tx_done(adapter)) |
272 | goto rx_ring_summary; | |
273 | ||
af667a29 | 274 | dev_info(&adapter->pdev->dev, "Tx Ring Dump\n"); |
84f4ee90 TI |
275 | |
276 | /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) | |
277 | * | |
278 | * Legacy Transmit Descriptor | |
279 | * +--------------------------------------------------------------+ | |
280 | * 0 | Buffer Address [63:0] (Reserved on Write Back) | | |
281 | * +--------------------------------------------------------------+ | |
282 | * 8 | Special | CSS | Status | CMD | CSO | Length | | |
283 | * +--------------------------------------------------------------+ | |
284 | * 63 48 47 36 35 32 31 24 23 16 15 0 | |
285 | * | |
286 | * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload | |
287 | * 63 48 47 40 39 32 31 16 15 8 7 0 | |
288 | * +----------------------------------------------------------------+ | |
289 | * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | | |
290 | * +----------------------------------------------------------------+ | |
291 | * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | | |
292 | * +----------------------------------------------------------------+ | |
293 | * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 | |
294 | * | |
295 | * Extended Data Descriptor (DTYP=0x1) | |
296 | * +----------------------------------------------------------------+ | |
297 | * 0 | Buffer Address [63:0] | | |
298 | * +----------------------------------------------------------------+ | |
299 | * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | | |
300 | * +----------------------------------------------------------------+ | |
301 | * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 | |
302 | */ | |
ef456f85 JK |
303 | pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n"); |
304 | pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n"); | |
305 | pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n"); | |
84f4ee90 | 306 | for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
ef456f85 | 307 | const char *next_desc; |
84f4ee90 TI |
308 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
309 | buffer_info = &tx_ring->buffer_info[i]; | |
310 | u0 = (struct my_u0 *)tx_desc; | |
84f4ee90 | 311 | if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
ef456f85 | 312 | next_desc = " NTC/U"; |
84f4ee90 | 313 | else if (i == tx_ring->next_to_use) |
ef456f85 | 314 | next_desc = " NTU"; |
84f4ee90 | 315 | else if (i == tx_ring->next_to_clean) |
ef456f85 | 316 | next_desc = " NTC"; |
84f4ee90 | 317 | else |
ef456f85 JK |
318 | next_desc = ""; |
319 | pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n", | |
320 | (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' : | |
321 | ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), | |
322 | i, | |
323 | (unsigned long long)le64_to_cpu(u0->a), | |
324 | (unsigned long long)le64_to_cpu(u0->b), | |
325 | (unsigned long long)buffer_info->dma, | |
326 | buffer_info->length, buffer_info->next_to_watch, | |
327 | (unsigned long long)buffer_info->time_stamp, | |
328 | buffer_info->skb, next_desc); | |
84f4ee90 | 329 | |
f0c5dadf | 330 | if (netif_msg_pktdata(adapter) && buffer_info->skb) |
84f4ee90 | 331 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
f0c5dadf ET |
332 | 16, 1, buffer_info->skb->data, |
333 | buffer_info->skb->len, true); | |
84f4ee90 TI |
334 | } |
335 | ||
af667a29 | 336 | /* Print Rx Ring Summary */ |
84f4ee90 | 337 | rx_ring_summary: |
af667a29 | 338 | dev_info(&adapter->pdev->dev, "Rx Ring Summary\n"); |
ef456f85 JK |
339 | pr_info("Queue [NTU] [NTC]\n"); |
340 | pr_info(" %5d %5X %5X\n", | |
341 | 0, rx_ring->next_to_use, rx_ring->next_to_clean); | |
84f4ee90 | 342 | |
af667a29 | 343 | /* Print Rx Ring */ |
84f4ee90 | 344 | if (!netif_msg_rx_status(adapter)) |
fe1e980f | 345 | return; |
84f4ee90 | 346 | |
af667a29 | 347 | dev_info(&adapter->pdev->dev, "Rx Ring Dump\n"); |
84f4ee90 TI |
348 | switch (adapter->rx_ps_pages) { |
349 | case 1: | |
350 | case 2: | |
351 | case 3: | |
352 | /* [Extended] Packet Split Receive Descriptor Format | |
353 | * | |
354 | * +-----------------------------------------------------+ | |
355 | * 0 | Buffer Address 0 [63:0] | | |
356 | * +-----------------------------------------------------+ | |
357 | * 8 | Buffer Address 1 [63:0] | | |
358 | * +-----------------------------------------------------+ | |
359 | * 16 | Buffer Address 2 [63:0] | | |
360 | * +-----------------------------------------------------+ | |
361 | * 24 | Buffer Address 3 [63:0] | | |
362 | * +-----------------------------------------------------+ | |
363 | */ | |
ef456f85 | 364 | pr_info("R [desc] [buffer 0 63:0 ] [buffer 1 63:0 ] [buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] [bi->skb] <-- Ext Pkt Split format\n"); |
84f4ee90 TI |
365 | /* [Extended] Receive Descriptor (Write-Back) Format |
366 | * | |
367 | * 63 48 47 32 31 13 12 8 7 4 3 0 | |
368 | * +------------------------------------------------------+ | |
369 | * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | | |
370 | * | Checksum | Ident | | Queue | | Type | | |
371 | * +------------------------------------------------------+ | |
372 | * 8 | VLAN Tag | Length | Extended Error | Extended Status | | |
373 | * +------------------------------------------------------+ | |
374 | * 63 48 47 32 31 20 19 0 | |
375 | */ | |
ef456f85 | 376 | pr_info("RWB[desc] [ck ipid mrqhsh] [vl l0 ee es] [ l3 l2 l1 hs] [reserved ] ---------------- [bi->skb] <-- Ext Rx Write-Back format\n"); |
84f4ee90 | 377 | for (i = 0; i < rx_ring->count; i++) { |
ef456f85 | 378 | const char *next_desc; |
84f4ee90 TI |
379 | buffer_info = &rx_ring->buffer_info[i]; |
380 | rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); | |
381 | u1 = (struct my_u1 *)rx_desc_ps; | |
382 | staterr = | |
af667a29 | 383 | le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
ef456f85 JK |
384 | |
385 | if (i == rx_ring->next_to_use) | |
386 | next_desc = " NTU"; | |
387 | else if (i == rx_ring->next_to_clean) | |
388 | next_desc = " NTC"; | |
389 | else | |
390 | next_desc = ""; | |
391 | ||
84f4ee90 TI |
392 | if (staterr & E1000_RXD_STAT_DD) { |
393 | /* Descriptor Done */ | |
ef456f85 JK |
394 | pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n", |
395 | "RWB", i, | |
396 | (unsigned long long)le64_to_cpu(u1->a), | |
397 | (unsigned long long)le64_to_cpu(u1->b), | |
398 | (unsigned long long)le64_to_cpu(u1->c), | |
399 | (unsigned long long)le64_to_cpu(u1->d), | |
400 | buffer_info->skb, next_desc); | |
84f4ee90 | 401 | } else { |
ef456f85 JK |
402 | pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n", |
403 | "R ", i, | |
404 | (unsigned long long)le64_to_cpu(u1->a), | |
405 | (unsigned long long)le64_to_cpu(u1->b), | |
406 | (unsigned long long)le64_to_cpu(u1->c), | |
407 | (unsigned long long)le64_to_cpu(u1->d), | |
408 | (unsigned long long)buffer_info->dma, | |
409 | buffer_info->skb, next_desc); | |
84f4ee90 TI |
410 | |
411 | if (netif_msg_pktdata(adapter)) | |
f0c5dadf ET |
412 | e1000e_dump_ps_pages(adapter, |
413 | buffer_info); | |
84f4ee90 | 414 | } |
84f4ee90 TI |
415 | } |
416 | break; | |
417 | default: | |
418 | case 0: | |
5f450212 | 419 | /* Extended Receive Descriptor (Read) Format |
84f4ee90 | 420 | * |
5f450212 BA |
421 | * +-----------------------------------------------------+ |
422 | * 0 | Buffer Address [63:0] | | |
423 | * +-----------------------------------------------------+ | |
424 | * 8 | Reserved | | |
425 | * +-----------------------------------------------------+ | |
84f4ee90 | 426 | */ |
ef456f85 | 427 | pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n"); |
5f450212 BA |
428 | /* Extended Receive Descriptor (Write-Back) Format |
429 | * | |
430 | * 63 48 47 32 31 24 23 4 3 0 | |
431 | * +------------------------------------------------------+ | |
432 | * | RSS Hash | | | | | |
433 | * 0 +-------------------+ Rsvd | Reserved | MRQ RSS | | |
434 | * | Packet | IP | | | Type | | |
435 | * | Checksum | Ident | | | | | |
436 | * +------------------------------------------------------+ | |
437 | * 8 | VLAN Tag | Length | Extended Error | Extended Status | | |
438 | * +------------------------------------------------------+ | |
439 | * 63 48 47 32 31 20 19 0 | |
440 | */ | |
ef456f85 | 441 | pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n"); |
5f450212 BA |
442 | |
443 | for (i = 0; i < rx_ring->count; i++) { | |
ef456f85 JK |
444 | const char *next_desc; |
445 | ||
84f4ee90 | 446 | buffer_info = &rx_ring->buffer_info[i]; |
5f450212 BA |
447 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
448 | u1 = (struct my_u1 *)rx_desc; | |
449 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
ef456f85 JK |
450 | |
451 | if (i == rx_ring->next_to_use) | |
452 | next_desc = " NTU"; | |
453 | else if (i == rx_ring->next_to_clean) | |
454 | next_desc = " NTC"; | |
455 | else | |
456 | next_desc = ""; | |
457 | ||
5f450212 BA |
458 | if (staterr & E1000_RXD_STAT_DD) { |
459 | /* Descriptor Done */ | |
ef456f85 JK |
460 | pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n", |
461 | "RWB", i, | |
462 | (unsigned long long)le64_to_cpu(u1->a), | |
463 | (unsigned long long)le64_to_cpu(u1->b), | |
464 | buffer_info->skb, next_desc); | |
5f450212 | 465 | } else { |
ef456f85 JK |
466 | pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n", |
467 | "R ", i, | |
468 | (unsigned long long)le64_to_cpu(u1->a), | |
469 | (unsigned long long)le64_to_cpu(u1->b), | |
470 | (unsigned long long)buffer_info->dma, | |
471 | buffer_info->skb, next_desc); | |
5f450212 | 472 | |
f0c5dadf ET |
473 | if (netif_msg_pktdata(adapter) && |
474 | buffer_info->skb) | |
5f450212 BA |
475 | print_hex_dump(KERN_INFO, "", |
476 | DUMP_PREFIX_ADDRESS, 16, | |
477 | 1, | |
f0c5dadf | 478 | buffer_info->skb->data, |
5f450212 BA |
479 | adapter->rx_buffer_len, |
480 | true); | |
481 | } | |
84f4ee90 TI |
482 | } |
483 | } | |
84f4ee90 TI |
484 | } |
485 | ||
bc7f75fa AK |
486 | /** |
487 | * e1000_desc_unused - calculate if we have unused descriptors | |
488 | **/ | |
489 | static int e1000_desc_unused(struct e1000_ring *ring) | |
490 | { | |
491 | if (ring->next_to_clean > ring->next_to_use) | |
492 | return ring->next_to_clean - ring->next_to_use - 1; | |
493 | ||
494 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
495 | } | |
496 | ||
b67e1913 BA |
497 | /** |
498 | * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp | |
499 | * @adapter: board private structure | |
500 | * @hwtstamps: time stamp structure to update | |
501 | * @systim: unsigned 64bit system time value. | |
502 | * | |
503 | * Convert the system time value stored in the RX/TXSTMP registers into a | |
504 | * hwtstamp which can be used by the upper level time stamping functions. | |
505 | * | |
506 | * The 'systim_lock' spinlock is used to protect the consistency of the | |
507 | * system time value. This is needed because reading the 64 bit time | |
508 | * value involves reading two 32 bit registers. The first read latches the | |
509 | * value. | |
510 | **/ | |
511 | static void e1000e_systim_to_hwtstamp(struct e1000_adapter *adapter, | |
512 | struct skb_shared_hwtstamps *hwtstamps, | |
513 | u64 systim) | |
514 | { | |
515 | u64 ns; | |
516 | unsigned long flags; | |
517 | ||
518 | spin_lock_irqsave(&adapter->systim_lock, flags); | |
519 | ns = timecounter_cyc2time(&adapter->tc, systim); | |
520 | spin_unlock_irqrestore(&adapter->systim_lock, flags); | |
521 | ||
522 | memset(hwtstamps, 0, sizeof(*hwtstamps)); | |
523 | hwtstamps->hwtstamp = ns_to_ktime(ns); | |
524 | } | |
525 | ||
526 | /** | |
527 | * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp | |
528 | * @adapter: board private structure | |
529 | * @status: descriptor extended error and status field | |
530 | * @skb: particular skb to include time stamp | |
531 | * | |
532 | * If the time stamp is valid, convert it into the timecounter ns value | |
533 | * and store that result into the shhwtstamps structure which is passed | |
534 | * up the network stack. | |
535 | **/ | |
536 | static void e1000e_rx_hwtstamp(struct e1000_adapter *adapter, u32 status, | |
537 | struct sk_buff *skb) | |
538 | { | |
539 | struct e1000_hw *hw = &adapter->hw; | |
540 | u64 rxstmp; | |
541 | ||
542 | if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP) || | |
543 | !(status & E1000_RXDEXT_STATERR_TST) || | |
544 | !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) | |
545 | return; | |
546 | ||
547 | /* The Rx time stamp registers contain the time stamp. No other | |
548 | * received packet will be time stamped until the Rx time stamp | |
549 | * registers are read. Because only one packet can be time stamped | |
550 | * at a time, the register values must belong to this packet and | |
551 | * therefore none of the other additional attributes need to be | |
552 | * compared. | |
553 | */ | |
554 | rxstmp = (u64)er32(RXSTMPL); | |
555 | rxstmp |= (u64)er32(RXSTMPH) << 32; | |
556 | e1000e_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), rxstmp); | |
557 | ||
558 | adapter->flags2 &= ~FLAG2_CHECK_RX_HWTSTAMP; | |
559 | } | |
560 | ||
bc7f75fa | 561 | /** |
ad68076e | 562 | * e1000_receive_skb - helper function to handle Rx indications |
bc7f75fa | 563 | * @adapter: board private structure |
b67e1913 | 564 | * @staterr: descriptor extended error and status field as written by hardware |
bc7f75fa AK |
565 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
566 | * @skb: pointer to sk_buff to be indicated to stack | |
567 | **/ | |
568 | static void e1000_receive_skb(struct e1000_adapter *adapter, | |
af667a29 | 569 | struct net_device *netdev, struct sk_buff *skb, |
b67e1913 | 570 | u32 staterr, __le16 vlan) |
bc7f75fa | 571 | { |
86d70e53 | 572 | u16 tag = le16_to_cpu(vlan); |
b67e1913 BA |
573 | |
574 | e1000e_rx_hwtstamp(adapter, staterr, skb); | |
575 | ||
bc7f75fa AK |
576 | skb->protocol = eth_type_trans(skb, netdev); |
577 | ||
b67e1913 | 578 | if (staterr & E1000_RXD_STAT_VP) |
86a9bad3 | 579 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); |
86d70e53 JK |
580 | |
581 | napi_gro_receive(&adapter->napi, skb); | |
bc7f75fa AK |
582 | } |
583 | ||
584 | /** | |
af667a29 | 585 | * e1000_rx_checksum - Receive Checksum Offload |
afd12939 BA |
586 | * @adapter: board private structure |
587 | * @status_err: receive descriptor status and error fields | |
588 | * @csum: receive descriptor csum field | |
589 | * @sk_buff: socket buffer with received data | |
bc7f75fa AK |
590 | **/ |
591 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, | |
2e1706f2 | 592 | struct sk_buff *skb) |
bc7f75fa AK |
593 | { |
594 | u16 status = (u16)status_err; | |
595 | u8 errors = (u8)(status_err >> 24); | |
bc8acf2c ED |
596 | |
597 | skb_checksum_none_assert(skb); | |
bc7f75fa | 598 | |
afd12939 BA |
599 | /* Rx checksum disabled */ |
600 | if (!(adapter->netdev->features & NETIF_F_RXCSUM)) | |
601 | return; | |
602 | ||
bc7f75fa AK |
603 | /* Ignore Checksum bit is set */ |
604 | if (status & E1000_RXD_STAT_IXSM) | |
605 | return; | |
afd12939 | 606 | |
2e1706f2 BA |
607 | /* TCP/UDP checksum error bit or IP checksum error bit is set */ |
608 | if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) { | |
bc7f75fa AK |
609 | /* let the stack verify checksum errors */ |
610 | adapter->hw_csum_err++; | |
611 | return; | |
612 | } | |
613 | ||
614 | /* TCP/UDP Checksum has not been calculated */ | |
615 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) | |
616 | return; | |
617 | ||
618 | /* It must be a TCP or UDP packet with a valid checksum */ | |
2e1706f2 | 619 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
bc7f75fa AK |
620 | adapter->hw_csum_good++; |
621 | } | |
622 | ||
55aa6985 | 623 | static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i) |
c6e7f51e | 624 | { |
55aa6985 | 625 | struct e1000_adapter *adapter = rx_ring->adapter; |
c6e7f51e | 626 | struct e1000_hw *hw = &adapter->hw; |
bdc125f7 BA |
627 | s32 ret_val = __ew32_prepare(hw); |
628 | ||
629 | writel(i, rx_ring->tail); | |
c6e7f51e | 630 | |
bdc125f7 | 631 | if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) { |
c6e7f51e | 632 | u32 rctl = er32(RCTL); |
6cf08d1c | 633 | |
c6e7f51e BA |
634 | ew32(RCTL, rctl & ~E1000_RCTL_EN); |
635 | e_err("ME firmware caused invalid RDT - resetting\n"); | |
636 | schedule_work(&adapter->reset_task); | |
637 | } | |
638 | } | |
639 | ||
55aa6985 | 640 | static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i) |
c6e7f51e | 641 | { |
55aa6985 | 642 | struct e1000_adapter *adapter = tx_ring->adapter; |
c6e7f51e | 643 | struct e1000_hw *hw = &adapter->hw; |
bdc125f7 | 644 | s32 ret_val = __ew32_prepare(hw); |
c6e7f51e | 645 | |
bdc125f7 BA |
646 | writel(i, tx_ring->tail); |
647 | ||
648 | if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) { | |
c6e7f51e | 649 | u32 tctl = er32(TCTL); |
6cf08d1c | 650 | |
c6e7f51e BA |
651 | ew32(TCTL, tctl & ~E1000_TCTL_EN); |
652 | e_err("ME firmware caused invalid TDT - resetting\n"); | |
653 | schedule_work(&adapter->reset_task); | |
654 | } | |
655 | } | |
656 | ||
bc7f75fa | 657 | /** |
5f450212 | 658 | * e1000_alloc_rx_buffers - Replace used receive buffers |
55aa6985 | 659 | * @rx_ring: Rx descriptor ring |
bc7f75fa | 660 | **/ |
55aa6985 | 661 | static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring, |
c2fed996 | 662 | int cleaned_count, gfp_t gfp) |
bc7f75fa | 663 | { |
55aa6985 | 664 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa AK |
665 | struct net_device *netdev = adapter->netdev; |
666 | struct pci_dev *pdev = adapter->pdev; | |
5f450212 | 667 | union e1000_rx_desc_extended *rx_desc; |
bc7f75fa AK |
668 | struct e1000_buffer *buffer_info; |
669 | struct sk_buff *skb; | |
670 | unsigned int i; | |
89d71a66 | 671 | unsigned int bufsz = adapter->rx_buffer_len; |
bc7f75fa AK |
672 | |
673 | i = rx_ring->next_to_use; | |
674 | buffer_info = &rx_ring->buffer_info[i]; | |
675 | ||
676 | while (cleaned_count--) { | |
677 | skb = buffer_info->skb; | |
678 | if (skb) { | |
679 | skb_trim(skb, 0); | |
680 | goto map_skb; | |
681 | } | |
682 | ||
c2fed996 | 683 | skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
bc7f75fa AK |
684 | if (!skb) { |
685 | /* Better luck next round */ | |
686 | adapter->alloc_rx_buff_failed++; | |
687 | break; | |
688 | } | |
689 | ||
bc7f75fa AK |
690 | buffer_info->skb = skb; |
691 | map_skb: | |
0be3f55f | 692 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
bc7f75fa | 693 | adapter->rx_buffer_len, |
0be3f55f NN |
694 | DMA_FROM_DEVICE); |
695 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
af667a29 | 696 | dev_err(&pdev->dev, "Rx DMA map failed\n"); |
bc7f75fa AK |
697 | adapter->rx_dma_failed++; |
698 | break; | |
699 | } | |
700 | ||
5f450212 BA |
701 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
702 | rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
bc7f75fa | 703 | |
50849d79 | 704 | if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
e921eb1a | 705 | /* Force memory writes to complete before letting h/w |
50849d79 TH |
706 | * know there are new descriptors to fetch. (Only |
707 | * applicable for weak-ordered memory model archs, | |
708 | * such as IA-64). | |
709 | */ | |
710 | wmb(); | |
c6e7f51e | 711 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
55aa6985 | 712 | e1000e_update_rdt_wa(rx_ring, i); |
c6e7f51e | 713 | else |
c5083cf6 | 714 | writel(i, rx_ring->tail); |
50849d79 | 715 | } |
bc7f75fa AK |
716 | i++; |
717 | if (i == rx_ring->count) | |
718 | i = 0; | |
719 | buffer_info = &rx_ring->buffer_info[i]; | |
720 | } | |
721 | ||
50849d79 | 722 | rx_ring->next_to_use = i; |
bc7f75fa AK |
723 | } |
724 | ||
725 | /** | |
726 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
55aa6985 | 727 | * @rx_ring: Rx descriptor ring |
bc7f75fa | 728 | **/ |
55aa6985 | 729 | static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring, |
c2fed996 | 730 | int cleaned_count, gfp_t gfp) |
bc7f75fa | 731 | { |
55aa6985 | 732 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa AK |
733 | struct net_device *netdev = adapter->netdev; |
734 | struct pci_dev *pdev = adapter->pdev; | |
735 | union e1000_rx_desc_packet_split *rx_desc; | |
bc7f75fa AK |
736 | struct e1000_buffer *buffer_info; |
737 | struct e1000_ps_page *ps_page; | |
738 | struct sk_buff *skb; | |
739 | unsigned int i, j; | |
740 | ||
741 | i = rx_ring->next_to_use; | |
742 | buffer_info = &rx_ring->buffer_info[i]; | |
743 | ||
744 | while (cleaned_count--) { | |
745 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
746 | ||
747 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 AK |
748 | ps_page = &buffer_info->ps_pages[j]; |
749 | if (j >= adapter->rx_ps_pages) { | |
750 | /* all unused desc entries get hw null ptr */ | |
af667a29 BA |
751 | rx_desc->read.buffer_addr[j + 1] = |
752 | ~cpu_to_le64(0); | |
47f44e40 AK |
753 | continue; |
754 | } | |
755 | if (!ps_page->page) { | |
c2fed996 | 756 | ps_page->page = alloc_page(gfp); |
bc7f75fa | 757 | if (!ps_page->page) { |
47f44e40 AK |
758 | adapter->alloc_rx_buff_failed++; |
759 | goto no_buffers; | |
760 | } | |
0be3f55f NN |
761 | ps_page->dma = dma_map_page(&pdev->dev, |
762 | ps_page->page, | |
763 | 0, PAGE_SIZE, | |
764 | DMA_FROM_DEVICE); | |
765 | if (dma_mapping_error(&pdev->dev, | |
766 | ps_page->dma)) { | |
47f44e40 | 767 | dev_err(&adapter->pdev->dev, |
af667a29 | 768 | "Rx DMA page map failed\n"); |
47f44e40 AK |
769 | adapter->rx_dma_failed++; |
770 | goto no_buffers; | |
bc7f75fa | 771 | } |
bc7f75fa | 772 | } |
e921eb1a | 773 | /* Refresh the desc even if buffer_addrs |
47f44e40 AK |
774 | * didn't change because each write-back |
775 | * erases this info. | |
776 | */ | |
af667a29 BA |
777 | rx_desc->read.buffer_addr[j + 1] = |
778 | cpu_to_le64(ps_page->dma); | |
bc7f75fa AK |
779 | } |
780 | ||
e5fe2541 | 781 | skb = __netdev_alloc_skb_ip_align(netdev, adapter->rx_ps_bsize0, |
c2fed996 | 782 | gfp); |
bc7f75fa AK |
783 | |
784 | if (!skb) { | |
785 | adapter->alloc_rx_buff_failed++; | |
786 | break; | |
787 | } | |
788 | ||
bc7f75fa | 789 | buffer_info->skb = skb; |
0be3f55f | 790 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
bc7f75fa | 791 | adapter->rx_ps_bsize0, |
0be3f55f NN |
792 | DMA_FROM_DEVICE); |
793 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
af667a29 | 794 | dev_err(&pdev->dev, "Rx DMA map failed\n"); |
bc7f75fa AK |
795 | adapter->rx_dma_failed++; |
796 | /* cleanup skb */ | |
797 | dev_kfree_skb_any(skb); | |
798 | buffer_info->skb = NULL; | |
799 | break; | |
800 | } | |
801 | ||
802 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
803 | ||
50849d79 | 804 | if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
e921eb1a | 805 | /* Force memory writes to complete before letting h/w |
50849d79 TH |
806 | * know there are new descriptors to fetch. (Only |
807 | * applicable for weak-ordered memory model archs, | |
808 | * such as IA-64). | |
809 | */ | |
810 | wmb(); | |
c6e7f51e | 811 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
55aa6985 | 812 | e1000e_update_rdt_wa(rx_ring, i << 1); |
c6e7f51e | 813 | else |
c5083cf6 | 814 | writel(i << 1, rx_ring->tail); |
50849d79 TH |
815 | } |
816 | ||
bc7f75fa AK |
817 | i++; |
818 | if (i == rx_ring->count) | |
819 | i = 0; | |
820 | buffer_info = &rx_ring->buffer_info[i]; | |
821 | } | |
822 | ||
823 | no_buffers: | |
50849d79 | 824 | rx_ring->next_to_use = i; |
bc7f75fa AK |
825 | } |
826 | ||
97ac8cae BA |
827 | /** |
828 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
55aa6985 | 829 | * @rx_ring: Rx descriptor ring |
97ac8cae BA |
830 | * @cleaned_count: number of buffers to allocate this pass |
831 | **/ | |
832 | ||
55aa6985 | 833 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring, |
c2fed996 | 834 | int cleaned_count, gfp_t gfp) |
97ac8cae | 835 | { |
55aa6985 | 836 | struct e1000_adapter *adapter = rx_ring->adapter; |
97ac8cae BA |
837 | struct net_device *netdev = adapter->netdev; |
838 | struct pci_dev *pdev = adapter->pdev; | |
5f450212 | 839 | union e1000_rx_desc_extended *rx_desc; |
97ac8cae BA |
840 | struct e1000_buffer *buffer_info; |
841 | struct sk_buff *skb; | |
842 | unsigned int i; | |
2a2293b9 | 843 | unsigned int bufsz = 256 - 16; /* for skb_reserve */ |
97ac8cae BA |
844 | |
845 | i = rx_ring->next_to_use; | |
846 | buffer_info = &rx_ring->buffer_info[i]; | |
847 | ||
848 | while (cleaned_count--) { | |
849 | skb = buffer_info->skb; | |
850 | if (skb) { | |
851 | skb_trim(skb, 0); | |
852 | goto check_page; | |
853 | } | |
854 | ||
c2fed996 | 855 | skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
97ac8cae BA |
856 | if (unlikely(!skb)) { |
857 | /* Better luck next round */ | |
858 | adapter->alloc_rx_buff_failed++; | |
859 | break; | |
860 | } | |
861 | ||
97ac8cae BA |
862 | buffer_info->skb = skb; |
863 | check_page: | |
864 | /* allocate a new page if necessary */ | |
865 | if (!buffer_info->page) { | |
c2fed996 | 866 | buffer_info->page = alloc_page(gfp); |
97ac8cae BA |
867 | if (unlikely(!buffer_info->page)) { |
868 | adapter->alloc_rx_buff_failed++; | |
869 | break; | |
870 | } | |
871 | } | |
872 | ||
37287fae | 873 | if (!buffer_info->dma) { |
0be3f55f | 874 | buffer_info->dma = dma_map_page(&pdev->dev, |
f0ff4398 BA |
875 | buffer_info->page, 0, |
876 | PAGE_SIZE, | |
0be3f55f | 877 | DMA_FROM_DEVICE); |
37287fae CP |
878 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
879 | adapter->alloc_rx_buff_failed++; | |
880 | break; | |
881 | } | |
882 | } | |
97ac8cae | 883 | |
5f450212 BA |
884 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
885 | rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
97ac8cae BA |
886 | |
887 | if (unlikely(++i == rx_ring->count)) | |
888 | i = 0; | |
889 | buffer_info = &rx_ring->buffer_info[i]; | |
890 | } | |
891 | ||
892 | if (likely(rx_ring->next_to_use != i)) { | |
893 | rx_ring->next_to_use = i; | |
894 | if (unlikely(i-- == 0)) | |
895 | i = (rx_ring->count - 1); | |
896 | ||
897 | /* Force memory writes to complete before letting h/w | |
898 | * know there are new descriptors to fetch. (Only | |
899 | * applicable for weak-ordered memory model archs, | |
e921eb1a BA |
900 | * such as IA-64). |
901 | */ | |
97ac8cae | 902 | wmb(); |
c6e7f51e | 903 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
55aa6985 | 904 | e1000e_update_rdt_wa(rx_ring, i); |
c6e7f51e | 905 | else |
c5083cf6 | 906 | writel(i, rx_ring->tail); |
97ac8cae BA |
907 | } |
908 | } | |
909 | ||
70495a50 BA |
910 | static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss, |
911 | struct sk_buff *skb) | |
912 | { | |
913 | if (netdev->features & NETIF_F_RXHASH) | |
e25909bc | 914 | skb_set_hash(skb, le32_to_cpu(rss), PKT_HASH_TYPE_L3); |
70495a50 BA |
915 | } |
916 | ||
bc7f75fa | 917 | /** |
55aa6985 BA |
918 | * e1000_clean_rx_irq - Send received data up the network stack |
919 | * @rx_ring: Rx descriptor ring | |
bc7f75fa AK |
920 | * |
921 | * the return value indicates whether actual cleaning was done, there | |
922 | * is no guarantee that everything was cleaned | |
923 | **/ | |
55aa6985 BA |
924 | static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
925 | int work_to_do) | |
bc7f75fa | 926 | { |
55aa6985 | 927 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa AK |
928 | struct net_device *netdev = adapter->netdev; |
929 | struct pci_dev *pdev = adapter->pdev; | |
3bb99fe2 | 930 | struct e1000_hw *hw = &adapter->hw; |
5f450212 | 931 | union e1000_rx_desc_extended *rx_desc, *next_rxd; |
bc7f75fa | 932 | struct e1000_buffer *buffer_info, *next_buffer; |
5f450212 | 933 | u32 length, staterr; |
bc7f75fa AK |
934 | unsigned int i; |
935 | int cleaned_count = 0; | |
3db1cd5c | 936 | bool cleaned = false; |
bc7f75fa AK |
937 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
938 | ||
939 | i = rx_ring->next_to_clean; | |
5f450212 BA |
940 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
941 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
bc7f75fa AK |
942 | buffer_info = &rx_ring->buffer_info[i]; |
943 | ||
5f450212 | 944 | while (staterr & E1000_RXD_STAT_DD) { |
bc7f75fa | 945 | struct sk_buff *skb; |
bc7f75fa AK |
946 | |
947 | if (*work_done >= work_to_do) | |
948 | break; | |
949 | (*work_done)++; | |
2d0bb1c1 | 950 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
bc7f75fa | 951 | |
bc7f75fa AK |
952 | skb = buffer_info->skb; |
953 | buffer_info->skb = NULL; | |
954 | ||
955 | prefetch(skb->data - NET_IP_ALIGN); | |
956 | ||
957 | i++; | |
958 | if (i == rx_ring->count) | |
959 | i = 0; | |
5f450212 | 960 | next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
bc7f75fa AK |
961 | prefetch(next_rxd); |
962 | ||
963 | next_buffer = &rx_ring->buffer_info[i]; | |
964 | ||
3db1cd5c | 965 | cleaned = true; |
bc7f75fa | 966 | cleaned_count++; |
e5fe2541 BA |
967 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
968 | adapter->rx_buffer_len, DMA_FROM_DEVICE); | |
bc7f75fa AK |
969 | buffer_info->dma = 0; |
970 | ||
5f450212 | 971 | length = le16_to_cpu(rx_desc->wb.upper.length); |
bc7f75fa | 972 | |
e921eb1a | 973 | /* !EOP means multiple descriptors were used to store a single |
b94b5028 JB |
974 | * packet, if that's the case we need to toss it. In fact, we |
975 | * need to toss every packet with the EOP bit clear and the | |
976 | * next frame that _does_ have the EOP bit set, as it is by | |
977 | * definition only a frame fragment | |
978 | */ | |
5f450212 | 979 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) |
b94b5028 JB |
980 | adapter->flags2 |= FLAG2_IS_DISCARDING; |
981 | ||
982 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
bc7f75fa | 983 | /* All receives must fit into a single buffer */ |
3bb99fe2 | 984 | e_dbg("Receive packet consumed multiple buffers\n"); |
bc7f75fa AK |
985 | /* recycle */ |
986 | buffer_info->skb = skb; | |
5f450212 | 987 | if (staterr & E1000_RXD_STAT_EOP) |
b94b5028 | 988 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
bc7f75fa AK |
989 | goto next_desc; |
990 | } | |
991 | ||
cf955e6c BG |
992 | if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
993 | !(netdev->features & NETIF_F_RXALL))) { | |
bc7f75fa AK |
994 | /* recycle */ |
995 | buffer_info->skb = skb; | |
996 | goto next_desc; | |
997 | } | |
998 | ||
eb7c3adb | 999 | /* adjust length to remove Ethernet CRC */ |
0184039a BG |
1000 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
1001 | /* If configured to store CRC, don't subtract FCS, | |
1002 | * but keep the FCS bytes out of the total_rx_bytes | |
1003 | * counter | |
1004 | */ | |
1005 | if (netdev->features & NETIF_F_RXFCS) | |
1006 | total_rx_bytes -= 4; | |
1007 | else | |
1008 | length -= 4; | |
1009 | } | |
eb7c3adb | 1010 | |
bc7f75fa AK |
1011 | total_rx_bytes += length; |
1012 | total_rx_packets++; | |
1013 | ||
e921eb1a | 1014 | /* code added for copybreak, this should improve |
bc7f75fa | 1015 | * performance for small packets with large amounts |
ad68076e BA |
1016 | * of reassembly being done in the stack |
1017 | */ | |
bc7f75fa AK |
1018 | if (length < copybreak) { |
1019 | struct sk_buff *new_skb = | |
67fd893e | 1020 | napi_alloc_skb(&adapter->napi, length); |
bc7f75fa | 1021 | if (new_skb) { |
808ff676 BA |
1022 | skb_copy_to_linear_data_offset(new_skb, |
1023 | -NET_IP_ALIGN, | |
1024 | (skb->data - | |
1025 | NET_IP_ALIGN), | |
1026 | (length + | |
1027 | NET_IP_ALIGN)); | |
bc7f75fa AK |
1028 | /* save the skb in buffer_info as good */ |
1029 | buffer_info->skb = skb; | |
1030 | skb = new_skb; | |
1031 | } | |
1032 | /* else just continue with the old one */ | |
1033 | } | |
1034 | /* end copybreak code */ | |
1035 | skb_put(skb, length); | |
1036 | ||
1037 | /* Receive Checksum Offload */ | |
2e1706f2 | 1038 | e1000_rx_checksum(adapter, staterr, skb); |
bc7f75fa | 1039 | |
70495a50 BA |
1040 | e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
1041 | ||
5f450212 BA |
1042 | e1000_receive_skb(adapter, netdev, skb, staterr, |
1043 | rx_desc->wb.upper.vlan); | |
bc7f75fa AK |
1044 | |
1045 | next_desc: | |
5f450212 | 1046 | rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
bc7f75fa AK |
1047 | |
1048 | /* return some buffers to hardware, one at a time is too slow */ | |
1049 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
55aa6985 | 1050 | adapter->alloc_rx_buf(rx_ring, cleaned_count, |
c2fed996 | 1051 | GFP_ATOMIC); |
bc7f75fa AK |
1052 | cleaned_count = 0; |
1053 | } | |
1054 | ||
1055 | /* use prefetched values */ | |
1056 | rx_desc = next_rxd; | |
1057 | buffer_info = next_buffer; | |
5f450212 BA |
1058 | |
1059 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
bc7f75fa AK |
1060 | } |
1061 | rx_ring->next_to_clean = i; | |
1062 | ||
1063 | cleaned_count = e1000_desc_unused(rx_ring); | |
1064 | if (cleaned_count) | |
55aa6985 | 1065 | adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
bc7f75fa | 1066 | |
bc7f75fa | 1067 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 1068 | adapter->total_rx_packets += total_rx_packets; |
bc7f75fa AK |
1069 | return cleaned; |
1070 | } | |
1071 | ||
55aa6985 BA |
1072 | static void e1000_put_txbuf(struct e1000_ring *tx_ring, |
1073 | struct e1000_buffer *buffer_info) | |
bc7f75fa | 1074 | { |
55aa6985 BA |
1075 | struct e1000_adapter *adapter = tx_ring->adapter; |
1076 | ||
03b1320d AD |
1077 | if (buffer_info->dma) { |
1078 | if (buffer_info->mapped_as_page) | |
0be3f55f NN |
1079 | dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
1080 | buffer_info->length, DMA_TO_DEVICE); | |
03b1320d | 1081 | else |
0be3f55f NN |
1082 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
1083 | buffer_info->length, DMA_TO_DEVICE); | |
03b1320d AD |
1084 | buffer_info->dma = 0; |
1085 | } | |
bc7f75fa AK |
1086 | if (buffer_info->skb) { |
1087 | dev_kfree_skb_any(buffer_info->skb); | |
1088 | buffer_info->skb = NULL; | |
1089 | } | |
1b7719c4 | 1090 | buffer_info->time_stamp = 0; |
bc7f75fa AK |
1091 | } |
1092 | ||
41cec6f1 | 1093 | static void e1000_print_hw_hang(struct work_struct *work) |
bc7f75fa | 1094 | { |
41cec6f1 | 1095 | struct e1000_adapter *adapter = container_of(work, |
f0ff4398 BA |
1096 | struct e1000_adapter, |
1097 | print_hang_task); | |
09357b00 | 1098 | struct net_device *netdev = adapter->netdev; |
bc7f75fa AK |
1099 | struct e1000_ring *tx_ring = adapter->tx_ring; |
1100 | unsigned int i = tx_ring->next_to_clean; | |
1101 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
1102 | struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
41cec6f1 BA |
1103 | struct e1000_hw *hw = &adapter->hw; |
1104 | u16 phy_status, phy_1000t_status, phy_ext_status; | |
1105 | u16 pci_status; | |
1106 | ||
615b32af JB |
1107 | if (test_bit(__E1000_DOWN, &adapter->state)) |
1108 | return; | |
1109 | ||
e5fe2541 | 1110 | if (!adapter->tx_hang_recheck && (adapter->flags2 & FLAG2_DMA_BURST)) { |
e921eb1a | 1111 | /* May be block on write-back, flush and detect again |
09357b00 JK |
1112 | * flush pending descriptor writebacks to memory |
1113 | */ | |
1114 | ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); | |
1115 | /* execute the writes immediately */ | |
1116 | e1e_flush(); | |
e921eb1a | 1117 | /* Due to rare timing issues, write to TIDV again to ensure |
bf03085f MV |
1118 | * the write is successful |
1119 | */ | |
1120 | ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); | |
1121 | /* execute the writes immediately */ | |
1122 | e1e_flush(); | |
09357b00 JK |
1123 | adapter->tx_hang_recheck = true; |
1124 | return; | |
1125 | } | |
09357b00 | 1126 | adapter->tx_hang_recheck = false; |
d9554e96 DE |
1127 | |
1128 | if (er32(TDH(0)) == er32(TDT(0))) { | |
1129 | e_dbg("false hang detected, ignoring\n"); | |
1130 | return; | |
1131 | } | |
1132 | ||
1133 | /* Real hang detected */ | |
09357b00 JK |
1134 | netif_stop_queue(netdev); |
1135 | ||
c2ade1a4 BA |
1136 | e1e_rphy(hw, MII_BMSR, &phy_status); |
1137 | e1e_rphy(hw, MII_STAT1000, &phy_1000t_status); | |
1138 | e1e_rphy(hw, MII_ESTATUS, &phy_ext_status); | |
bc7f75fa | 1139 | |
41cec6f1 BA |
1140 | pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
1141 | ||
1142 | /* detected Hardware unit hang */ | |
1143 | e_err("Detected Hardware Unit Hang:\n" | |
44defeb3 JK |
1144 | " TDH <%x>\n" |
1145 | " TDT <%x>\n" | |
1146 | " next_to_use <%x>\n" | |
1147 | " next_to_clean <%x>\n" | |
1148 | "buffer_info[next_to_clean]:\n" | |
1149 | " time_stamp <%lx>\n" | |
1150 | " next_to_watch <%x>\n" | |
1151 | " jiffies <%lx>\n" | |
41cec6f1 BA |
1152 | " next_to_watch.status <%x>\n" |
1153 | "MAC Status <%x>\n" | |
1154 | "PHY Status <%x>\n" | |
1155 | "PHY 1000BASE-T Status <%x>\n" | |
1156 | "PHY Extended Status <%x>\n" | |
1157 | "PCI Status <%x>\n", | |
e5fe2541 BA |
1158 | readl(tx_ring->head), readl(tx_ring->tail), tx_ring->next_to_use, |
1159 | tx_ring->next_to_clean, tx_ring->buffer_info[eop].time_stamp, | |
1160 | eop, jiffies, eop_desc->upper.fields.status, er32(STATUS), | |
1161 | phy_status, phy_1000t_status, phy_ext_status, pci_status); | |
7c0427ee | 1162 | |
d9554e96 DE |
1163 | e1000e_dump(adapter); |
1164 | ||
7c0427ee BA |
1165 | /* Suggest workaround for known h/w issue */ |
1166 | if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE)) | |
1167 | e_err("Try turning off Tx pause (flow control) via ethtool\n"); | |
bc7f75fa AK |
1168 | } |
1169 | ||
b67e1913 BA |
1170 | /** |
1171 | * e1000e_tx_hwtstamp_work - check for Tx time stamp | |
1172 | * @work: pointer to work struct | |
1173 | * | |
1174 | * This work function polls the TSYNCTXCTL valid bit to determine when a | |
1175 | * timestamp has been taken for the current stored skb. The timestamp must | |
1176 | * be for this skb because only one such packet is allowed in the queue. | |
1177 | */ | |
1178 | static void e1000e_tx_hwtstamp_work(struct work_struct *work) | |
1179 | { | |
1180 | struct e1000_adapter *adapter = container_of(work, struct e1000_adapter, | |
1181 | tx_hwtstamp_work); | |
1182 | struct e1000_hw *hw = &adapter->hw; | |
1183 | ||
b67e1913 BA |
1184 | if (er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID) { |
1185 | struct skb_shared_hwtstamps shhwtstamps; | |
1186 | u64 txstmp; | |
1187 | ||
1188 | txstmp = er32(TXSTMPL); | |
1189 | txstmp |= (u64)er32(TXSTMPH) << 32; | |
1190 | ||
1191 | e1000e_systim_to_hwtstamp(adapter, &shhwtstamps, txstmp); | |
1192 | ||
1193 | skb_tstamp_tx(adapter->tx_hwtstamp_skb, &shhwtstamps); | |
1194 | dev_kfree_skb_any(adapter->tx_hwtstamp_skb); | |
1195 | adapter->tx_hwtstamp_skb = NULL; | |
59c871c5 JK |
1196 | } else if (time_after(jiffies, adapter->tx_hwtstamp_start |
1197 | + adapter->tx_timeout_factor * HZ)) { | |
1198 | dev_kfree_skb_any(adapter->tx_hwtstamp_skb); | |
1199 | adapter->tx_hwtstamp_skb = NULL; | |
1200 | adapter->tx_hwtstamp_timeouts++; | |
c5ffe7e1 | 1201 | e_warn("clearing Tx timestamp hang\n"); |
b67e1913 BA |
1202 | } else { |
1203 | /* reschedule to check later */ | |
1204 | schedule_work(&adapter->tx_hwtstamp_work); | |
1205 | } | |
1206 | } | |
1207 | ||
bc7f75fa AK |
1208 | /** |
1209 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
55aa6985 | 1210 | * @tx_ring: Tx descriptor ring |
bc7f75fa AK |
1211 | * |
1212 | * the return value indicates whether actual cleaning was done, there | |
1213 | * is no guarantee that everything was cleaned | |
1214 | **/ | |
55aa6985 | 1215 | static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring) |
bc7f75fa | 1216 | { |
55aa6985 | 1217 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
1218 | struct net_device *netdev = adapter->netdev; |
1219 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa AK |
1220 | struct e1000_tx_desc *tx_desc, *eop_desc; |
1221 | struct e1000_buffer *buffer_info; | |
1222 | unsigned int i, eop; | |
1223 | unsigned int count = 0; | |
bc7f75fa | 1224 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
3f0cfa3b | 1225 | unsigned int bytes_compl = 0, pkts_compl = 0; |
bc7f75fa AK |
1226 | |
1227 | i = tx_ring->next_to_clean; | |
1228 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1229 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
1230 | ||
12d04a3c AD |
1231 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
1232 | (count < tx_ring->count)) { | |
a86043c2 | 1233 | bool cleaned = false; |
6cf08d1c | 1234 | |
e80bd1d1 | 1235 | rmb(); /* read buffer_info after eop_desc */ |
a86043c2 | 1236 | for (; !cleaned; count++) { |
bc7f75fa AK |
1237 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
1238 | buffer_info = &tx_ring->buffer_info[i]; | |
1239 | cleaned = (i == eop); | |
1240 | ||
1241 | if (cleaned) { | |
9ed318d5 TH |
1242 | total_tx_packets += buffer_info->segs; |
1243 | total_tx_bytes += buffer_info->bytecount; | |
3f0cfa3b TH |
1244 | if (buffer_info->skb) { |
1245 | bytes_compl += buffer_info->skb->len; | |
1246 | pkts_compl++; | |
1247 | } | |
bc7f75fa AK |
1248 | } |
1249 | ||
55aa6985 | 1250 | e1000_put_txbuf(tx_ring, buffer_info); |
bc7f75fa AK |
1251 | tx_desc->upper.data = 0; |
1252 | ||
1253 | i++; | |
1254 | if (i == tx_ring->count) | |
1255 | i = 0; | |
1256 | } | |
1257 | ||
dac87619 TL |
1258 | if (i == tx_ring->next_to_use) |
1259 | break; | |
bc7f75fa AK |
1260 | eop = tx_ring->buffer_info[i].next_to_watch; |
1261 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
bc7f75fa AK |
1262 | } |
1263 | ||
1264 | tx_ring->next_to_clean = i; | |
1265 | ||
3f0cfa3b TH |
1266 | netdev_completed_queue(netdev, pkts_compl, bytes_compl); |
1267 | ||
bc7f75fa | 1268 | #define TX_WAKE_THRESHOLD 32 |
a86043c2 JB |
1269 | if (count && netif_carrier_ok(netdev) && |
1270 | e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { | |
bc7f75fa AK |
1271 | /* Make sure that anybody stopping the queue after this |
1272 | * sees the new next_to_clean. | |
1273 | */ | |
1274 | smp_mb(); | |
1275 | ||
1276 | if (netif_queue_stopped(netdev) && | |
1277 | !(test_bit(__E1000_DOWN, &adapter->state))) { | |
1278 | netif_wake_queue(netdev); | |
1279 | ++adapter->restart_queue; | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | if (adapter->detect_tx_hung) { | |
e921eb1a | 1284 | /* Detect a transmit hang in hardware, this serializes the |
41cec6f1 BA |
1285 | * check with the clearing of time_stamp and movement of i |
1286 | */ | |
3db1cd5c | 1287 | adapter->detect_tx_hung = false; |
12d04a3c AD |
1288 | if (tx_ring->buffer_info[i].time_stamp && |
1289 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp | |
8e95a202 | 1290 | + (adapter->tx_timeout_factor * HZ)) && |
09357b00 | 1291 | !(er32(STATUS) & E1000_STATUS_TXOFF)) |
41cec6f1 | 1292 | schedule_work(&adapter->print_hang_task); |
09357b00 JK |
1293 | else |
1294 | adapter->tx_hang_recheck = false; | |
bc7f75fa AK |
1295 | } |
1296 | adapter->total_tx_bytes += total_tx_bytes; | |
1297 | adapter->total_tx_packets += total_tx_packets; | |
807540ba | 1298 | return count < tx_ring->count; |
bc7f75fa AK |
1299 | } |
1300 | ||
bc7f75fa AK |
1301 | /** |
1302 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
55aa6985 | 1303 | * @rx_ring: Rx descriptor ring |
bc7f75fa AK |
1304 | * |
1305 | * the return value indicates whether actual cleaning was done, there | |
1306 | * is no guarantee that everything was cleaned | |
1307 | **/ | |
55aa6985 BA |
1308 | static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, |
1309 | int work_to_do) | |
bc7f75fa | 1310 | { |
55aa6985 | 1311 | struct e1000_adapter *adapter = rx_ring->adapter; |
3bb99fe2 | 1312 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
1313 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
1314 | struct net_device *netdev = adapter->netdev; | |
1315 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
1316 | struct e1000_buffer *buffer_info, *next_buffer; |
1317 | struct e1000_ps_page *ps_page; | |
1318 | struct sk_buff *skb; | |
1319 | unsigned int i, j; | |
1320 | u32 length, staterr; | |
1321 | int cleaned_count = 0; | |
3db1cd5c | 1322 | bool cleaned = false; |
bc7f75fa AK |
1323 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
1324 | ||
1325 | i = rx_ring->next_to_clean; | |
1326 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
1327 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1328 | buffer_info = &rx_ring->buffer_info[i]; | |
1329 | ||
1330 | while (staterr & E1000_RXD_STAT_DD) { | |
1331 | if (*work_done >= work_to_do) | |
1332 | break; | |
1333 | (*work_done)++; | |
1334 | skb = buffer_info->skb; | |
2d0bb1c1 | 1335 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
bc7f75fa AK |
1336 | |
1337 | /* in the packet split case this is header only */ | |
1338 | prefetch(skb->data - NET_IP_ALIGN); | |
1339 | ||
1340 | i++; | |
1341 | if (i == rx_ring->count) | |
1342 | i = 0; | |
1343 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
1344 | prefetch(next_rxd); | |
1345 | ||
1346 | next_buffer = &rx_ring->buffer_info[i]; | |
1347 | ||
3db1cd5c | 1348 | cleaned = true; |
bc7f75fa | 1349 | cleaned_count++; |
0be3f55f | 1350 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
af667a29 | 1351 | adapter->rx_ps_bsize0, DMA_FROM_DEVICE); |
bc7f75fa AK |
1352 | buffer_info->dma = 0; |
1353 | ||
af667a29 | 1354 | /* see !EOP comment in other Rx routine */ |
b94b5028 JB |
1355 | if (!(staterr & E1000_RXD_STAT_EOP)) |
1356 | adapter->flags2 |= FLAG2_IS_DISCARDING; | |
1357 | ||
1358 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
ef456f85 | 1359 | e_dbg("Packet Split buffers didn't pick up the full packet\n"); |
bc7f75fa | 1360 | dev_kfree_skb_irq(skb); |
b94b5028 JB |
1361 | if (staterr & E1000_RXD_STAT_EOP) |
1362 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; | |
bc7f75fa AK |
1363 | goto next_desc; |
1364 | } | |
1365 | ||
cf955e6c BG |
1366 | if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
1367 | !(netdev->features & NETIF_F_RXALL))) { | |
bc7f75fa AK |
1368 | dev_kfree_skb_irq(skb); |
1369 | goto next_desc; | |
1370 | } | |
1371 | ||
1372 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
1373 | ||
1374 | if (!length) { | |
ef456f85 | 1375 | e_dbg("Last part of the packet spanning multiple descriptors\n"); |
bc7f75fa AK |
1376 | dev_kfree_skb_irq(skb); |
1377 | goto next_desc; | |
1378 | } | |
1379 | ||
1380 | /* Good Receive */ | |
1381 | skb_put(skb, length); | |
1382 | ||
1383 | { | |
e921eb1a | 1384 | /* this looks ugly, but it seems compiler issues make |
0e15df49 BA |
1385 | * it more efficient than reusing j |
1386 | */ | |
1387 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
bc7f75fa | 1388 | |
e921eb1a | 1389 | /* page alloc/put takes too long and effects small |
0e15df49 BA |
1390 | * packet throughput, so unsplit small packets and |
1391 | * save the alloc/put only valid in softirq (napi) | |
1392 | * context to call kmap_* | |
ad68076e | 1393 | */ |
0e15df49 BA |
1394 | if (l1 && (l1 <= copybreak) && |
1395 | ((length + l1) <= adapter->rx_ps_bsize0)) { | |
1396 | u8 *vaddr; | |
1397 | ||
1398 | ps_page = &buffer_info->ps_pages[0]; | |
1399 | ||
e921eb1a | 1400 | /* there is no documentation about how to call |
0e15df49 BA |
1401 | * kmap_atomic, so we can't hold the mapping |
1402 | * very long | |
1403 | */ | |
1404 | dma_sync_single_for_cpu(&pdev->dev, | |
1405 | ps_page->dma, | |
1406 | PAGE_SIZE, | |
1407 | DMA_FROM_DEVICE); | |
9f393834 | 1408 | vaddr = kmap_atomic(ps_page->page); |
0e15df49 | 1409 | memcpy(skb_tail_pointer(skb), vaddr, l1); |
9f393834 | 1410 | kunmap_atomic(vaddr); |
0e15df49 BA |
1411 | dma_sync_single_for_device(&pdev->dev, |
1412 | ps_page->dma, | |
1413 | PAGE_SIZE, | |
1414 | DMA_FROM_DEVICE); | |
1415 | ||
1416 | /* remove the CRC */ | |
0184039a BG |
1417 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
1418 | if (!(netdev->features & NETIF_F_RXFCS)) | |
1419 | l1 -= 4; | |
1420 | } | |
0e15df49 BA |
1421 | |
1422 | skb_put(skb, l1); | |
1423 | goto copydone; | |
e80bd1d1 | 1424 | } /* if */ |
bc7f75fa AK |
1425 | } |
1426 | ||
1427 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
1428 | length = le16_to_cpu(rx_desc->wb.upper.length[j]); | |
1429 | if (!length) | |
1430 | break; | |
1431 | ||
47f44e40 | 1432 | ps_page = &buffer_info->ps_pages[j]; |
0be3f55f NN |
1433 | dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
1434 | DMA_FROM_DEVICE); | |
bc7f75fa AK |
1435 | ps_page->dma = 0; |
1436 | skb_fill_page_desc(skb, j, ps_page->page, 0, length); | |
1437 | ps_page->page = NULL; | |
1438 | skb->len += length; | |
1439 | skb->data_len += length; | |
98a045d7 | 1440 | skb->truesize += PAGE_SIZE; |
bc7f75fa AK |
1441 | } |
1442 | ||
eb7c3adb JK |
1443 | /* strip the ethernet crc, problem is we're using pages now so |
1444 | * this whole operation can get a little cpu intensive | |
1445 | */ | |
0184039a BG |
1446 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
1447 | if (!(netdev->features & NETIF_F_RXFCS)) | |
1448 | pskb_trim(skb, skb->len - 4); | |
1449 | } | |
eb7c3adb | 1450 | |
bc7f75fa AK |
1451 | copydone: |
1452 | total_rx_bytes += skb->len; | |
1453 | total_rx_packets++; | |
1454 | ||
2e1706f2 | 1455 | e1000_rx_checksum(adapter, staterr, skb); |
bc7f75fa | 1456 | |
70495a50 BA |
1457 | e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
1458 | ||
bc7f75fa | 1459 | if (rx_desc->wb.upper.header_status & |
17e813ec | 1460 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
bc7f75fa AK |
1461 | adapter->rx_hdr_split++; |
1462 | ||
b67e1913 BA |
1463 | e1000_receive_skb(adapter, netdev, skb, staterr, |
1464 | rx_desc->wb.middle.vlan); | |
bc7f75fa AK |
1465 | |
1466 | next_desc: | |
1467 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); | |
1468 | buffer_info->skb = NULL; | |
1469 | ||
1470 | /* return some buffers to hardware, one at a time is too slow */ | |
1471 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
55aa6985 | 1472 | adapter->alloc_rx_buf(rx_ring, cleaned_count, |
c2fed996 | 1473 | GFP_ATOMIC); |
bc7f75fa AK |
1474 | cleaned_count = 0; |
1475 | } | |
1476 | ||
1477 | /* use prefetched values */ | |
1478 | rx_desc = next_rxd; | |
1479 | buffer_info = next_buffer; | |
1480 | ||
1481 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1482 | } | |
1483 | rx_ring->next_to_clean = i; | |
1484 | ||
1485 | cleaned_count = e1000_desc_unused(rx_ring); | |
1486 | if (cleaned_count) | |
55aa6985 | 1487 | adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
bc7f75fa | 1488 | |
bc7f75fa | 1489 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 1490 | adapter->total_rx_packets += total_rx_packets; |
bc7f75fa AK |
1491 | return cleaned; |
1492 | } | |
1493 | ||
97ac8cae BA |
1494 | /** |
1495 | * e1000_consume_page - helper function | |
1496 | **/ | |
1497 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
66501f56 | 1498 | u16 length) |
97ac8cae BA |
1499 | { |
1500 | bi->page = NULL; | |
1501 | skb->len += length; | |
1502 | skb->data_len += length; | |
98a045d7 | 1503 | skb->truesize += PAGE_SIZE; |
97ac8cae BA |
1504 | } |
1505 | ||
1506 | /** | |
1507 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
1508 | * @adapter: board private structure | |
1509 | * | |
1510 | * the return value indicates whether actual cleaning was done, there | |
1511 | * is no guarantee that everything was cleaned | |
1512 | **/ | |
55aa6985 BA |
1513 | static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
1514 | int work_to_do) | |
97ac8cae | 1515 | { |
55aa6985 | 1516 | struct e1000_adapter *adapter = rx_ring->adapter; |
97ac8cae BA |
1517 | struct net_device *netdev = adapter->netdev; |
1518 | struct pci_dev *pdev = adapter->pdev; | |
5f450212 | 1519 | union e1000_rx_desc_extended *rx_desc, *next_rxd; |
97ac8cae | 1520 | struct e1000_buffer *buffer_info, *next_buffer; |
5f450212 | 1521 | u32 length, staterr; |
97ac8cae BA |
1522 | unsigned int i; |
1523 | int cleaned_count = 0; | |
1524 | bool cleaned = false; | |
362e20ca | 1525 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
17e813ec | 1526 | struct skb_shared_info *shinfo; |
97ac8cae BA |
1527 | |
1528 | i = rx_ring->next_to_clean; | |
5f450212 BA |
1529 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
1530 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
97ac8cae BA |
1531 | buffer_info = &rx_ring->buffer_info[i]; |
1532 | ||
5f450212 | 1533 | while (staterr & E1000_RXD_STAT_DD) { |
97ac8cae | 1534 | struct sk_buff *skb; |
97ac8cae BA |
1535 | |
1536 | if (*work_done >= work_to_do) | |
1537 | break; | |
1538 | (*work_done)++; | |
2d0bb1c1 | 1539 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
97ac8cae | 1540 | |
97ac8cae BA |
1541 | skb = buffer_info->skb; |
1542 | buffer_info->skb = NULL; | |
1543 | ||
1544 | ++i; | |
1545 | if (i == rx_ring->count) | |
1546 | i = 0; | |
5f450212 | 1547 | next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
97ac8cae BA |
1548 | prefetch(next_rxd); |
1549 | ||
1550 | next_buffer = &rx_ring->buffer_info[i]; | |
1551 | ||
1552 | cleaned = true; | |
1553 | cleaned_count++; | |
0be3f55f NN |
1554 | dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
1555 | DMA_FROM_DEVICE); | |
97ac8cae BA |
1556 | buffer_info->dma = 0; |
1557 | ||
5f450212 | 1558 | length = le16_to_cpu(rx_desc->wb.upper.length); |
97ac8cae BA |
1559 | |
1560 | /* errors is only valid for DD + EOP descriptors */ | |
5f450212 | 1561 | if (unlikely((staterr & E1000_RXD_STAT_EOP) && |
cf955e6c BG |
1562 | ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
1563 | !(netdev->features & NETIF_F_RXALL)))) { | |
5f450212 BA |
1564 | /* recycle both page and skb */ |
1565 | buffer_info->skb = skb; | |
1566 | /* an error means any chain goes out the window too */ | |
1567 | if (rx_ring->rx_skb_top) | |
1568 | dev_kfree_skb_irq(rx_ring->rx_skb_top); | |
1569 | rx_ring->rx_skb_top = NULL; | |
1570 | goto next_desc; | |
97ac8cae | 1571 | } |
f0f1a172 | 1572 | #define rxtop (rx_ring->rx_skb_top) |
5f450212 | 1573 | if (!(staterr & E1000_RXD_STAT_EOP)) { |
97ac8cae BA |
1574 | /* this descriptor is only the beginning (or middle) */ |
1575 | if (!rxtop) { | |
1576 | /* this is the beginning of a chain */ | |
1577 | rxtop = skb; | |
1578 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
f0ff4398 | 1579 | 0, length); |
97ac8cae BA |
1580 | } else { |
1581 | /* this is the middle of a chain */ | |
17e813ec BA |
1582 | shinfo = skb_shinfo(rxtop); |
1583 | skb_fill_page_desc(rxtop, shinfo->nr_frags, | |
1584 | buffer_info->page, 0, | |
1585 | length); | |
97ac8cae BA |
1586 | /* re-use the skb, only consumed the page */ |
1587 | buffer_info->skb = skb; | |
1588 | } | |
1589 | e1000_consume_page(buffer_info, rxtop, length); | |
1590 | goto next_desc; | |
1591 | } else { | |
1592 | if (rxtop) { | |
1593 | /* end of the chain */ | |
17e813ec BA |
1594 | shinfo = skb_shinfo(rxtop); |
1595 | skb_fill_page_desc(rxtop, shinfo->nr_frags, | |
1596 | buffer_info->page, 0, | |
1597 | length); | |
97ac8cae | 1598 | /* re-use the current skb, we only consumed the |
e921eb1a BA |
1599 | * page |
1600 | */ | |
97ac8cae BA |
1601 | buffer_info->skb = skb; |
1602 | skb = rxtop; | |
1603 | rxtop = NULL; | |
1604 | e1000_consume_page(buffer_info, skb, length); | |
1605 | } else { | |
1606 | /* no chain, got EOP, this buf is the packet | |
e921eb1a BA |
1607 | * copybreak to save the put_page/alloc_page |
1608 | */ | |
97ac8cae BA |
1609 | if (length <= copybreak && |
1610 | skb_tailroom(skb) >= length) { | |
1611 | u8 *vaddr; | |
4679026d | 1612 | vaddr = kmap_atomic(buffer_info->page); |
97ac8cae BA |
1613 | memcpy(skb_tail_pointer(skb), vaddr, |
1614 | length); | |
4679026d | 1615 | kunmap_atomic(vaddr); |
97ac8cae | 1616 | /* re-use the page, so don't erase |
e921eb1a BA |
1617 | * buffer_info->page |
1618 | */ | |
97ac8cae BA |
1619 | skb_put(skb, length); |
1620 | } else { | |
1621 | skb_fill_page_desc(skb, 0, | |
f0ff4398 BA |
1622 | buffer_info->page, 0, |
1623 | length); | |
97ac8cae | 1624 | e1000_consume_page(buffer_info, skb, |
f0ff4398 | 1625 | length); |
97ac8cae BA |
1626 | } |
1627 | } | |
1628 | } | |
1629 | ||
2e1706f2 BA |
1630 | /* Receive Checksum Offload */ |
1631 | e1000_rx_checksum(adapter, staterr, skb); | |
97ac8cae | 1632 | |
70495a50 BA |
1633 | e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
1634 | ||
97ac8cae BA |
1635 | /* probably a little skewed due to removing CRC */ |
1636 | total_rx_bytes += skb->len; | |
1637 | total_rx_packets++; | |
1638 | ||
1639 | /* eth type trans needs skb->data to point to something */ | |
1640 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
44defeb3 | 1641 | e_err("pskb_may_pull failed.\n"); |
ef5ab89c | 1642 | dev_kfree_skb_irq(skb); |
97ac8cae BA |
1643 | goto next_desc; |
1644 | } | |
1645 | ||
5f450212 BA |
1646 | e1000_receive_skb(adapter, netdev, skb, staterr, |
1647 | rx_desc->wb.upper.vlan); | |
97ac8cae BA |
1648 | |
1649 | next_desc: | |
5f450212 | 1650 | rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
97ac8cae BA |
1651 | |
1652 | /* return some buffers to hardware, one at a time is too slow */ | |
1653 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
55aa6985 | 1654 | adapter->alloc_rx_buf(rx_ring, cleaned_count, |
c2fed996 | 1655 | GFP_ATOMIC); |
97ac8cae BA |
1656 | cleaned_count = 0; |
1657 | } | |
1658 | ||
1659 | /* use prefetched values */ | |
1660 | rx_desc = next_rxd; | |
1661 | buffer_info = next_buffer; | |
5f450212 BA |
1662 | |
1663 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
97ac8cae BA |
1664 | } |
1665 | rx_ring->next_to_clean = i; | |
1666 | ||
1667 | cleaned_count = e1000_desc_unused(rx_ring); | |
1668 | if (cleaned_count) | |
55aa6985 | 1669 | adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
97ac8cae BA |
1670 | |
1671 | adapter->total_rx_bytes += total_rx_bytes; | |
1672 | adapter->total_rx_packets += total_rx_packets; | |
97ac8cae BA |
1673 | return cleaned; |
1674 | } | |
1675 | ||
bc7f75fa AK |
1676 | /** |
1677 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
55aa6985 | 1678 | * @rx_ring: Rx descriptor ring |
bc7f75fa | 1679 | **/ |
55aa6985 | 1680 | static void e1000_clean_rx_ring(struct e1000_ring *rx_ring) |
bc7f75fa | 1681 | { |
55aa6985 | 1682 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa AK |
1683 | struct e1000_buffer *buffer_info; |
1684 | struct e1000_ps_page *ps_page; | |
1685 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
1686 | unsigned int i, j; |
1687 | ||
1688 | /* Free all the Rx ring sk_buffs */ | |
1689 | for (i = 0; i < rx_ring->count; i++) { | |
1690 | buffer_info = &rx_ring->buffer_info[i]; | |
1691 | if (buffer_info->dma) { | |
1692 | if (adapter->clean_rx == e1000_clean_rx_irq) | |
0be3f55f | 1693 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1694 | adapter->rx_buffer_len, |
0be3f55f | 1695 | DMA_FROM_DEVICE); |
97ac8cae | 1696 | else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
0be3f55f | 1697 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
f0ff4398 | 1698 | PAGE_SIZE, DMA_FROM_DEVICE); |
bc7f75fa | 1699 | else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
0be3f55f | 1700 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1701 | adapter->rx_ps_bsize0, |
0be3f55f | 1702 | DMA_FROM_DEVICE); |
bc7f75fa AK |
1703 | buffer_info->dma = 0; |
1704 | } | |
1705 | ||
97ac8cae BA |
1706 | if (buffer_info->page) { |
1707 | put_page(buffer_info->page); | |
1708 | buffer_info->page = NULL; | |
1709 | } | |
1710 | ||
bc7f75fa AK |
1711 | if (buffer_info->skb) { |
1712 | dev_kfree_skb(buffer_info->skb); | |
1713 | buffer_info->skb = NULL; | |
1714 | } | |
1715 | ||
1716 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 | 1717 | ps_page = &buffer_info->ps_pages[j]; |
bc7f75fa AK |
1718 | if (!ps_page->page) |
1719 | break; | |
0be3f55f NN |
1720 | dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
1721 | DMA_FROM_DEVICE); | |
bc7f75fa AK |
1722 | ps_page->dma = 0; |
1723 | put_page(ps_page->page); | |
1724 | ps_page->page = NULL; | |
1725 | } | |
1726 | } | |
1727 | ||
1728 | /* there also may be some cached data from a chained receive */ | |
1729 | if (rx_ring->rx_skb_top) { | |
1730 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1731 | rx_ring->rx_skb_top = NULL; | |
1732 | } | |
1733 | ||
bc7f75fa AK |
1734 | /* Zero out the descriptor ring */ |
1735 | memset(rx_ring->desc, 0, rx_ring->size); | |
1736 | ||
1737 | rx_ring->next_to_clean = 0; | |
1738 | rx_ring->next_to_use = 0; | |
b94b5028 | 1739 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
bc7f75fa | 1740 | |
c5083cf6 | 1741 | writel(0, rx_ring->head); |
b485dbae | 1742 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
bdc125f7 BA |
1743 | e1000e_update_rdt_wa(rx_ring, 0); |
1744 | else | |
1745 | writel(0, rx_ring->tail); | |
bc7f75fa AK |
1746 | } |
1747 | ||
a8f88ff5 JB |
1748 | static void e1000e_downshift_workaround(struct work_struct *work) |
1749 | { | |
1750 | struct e1000_adapter *adapter = container_of(work, | |
17e813ec BA |
1751 | struct e1000_adapter, |
1752 | downshift_task); | |
a8f88ff5 | 1753 | |
615b32af JB |
1754 | if (test_bit(__E1000_DOWN, &adapter->state)) |
1755 | return; | |
1756 | ||
a8f88ff5 JB |
1757 | e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
1758 | } | |
1759 | ||
bc7f75fa AK |
1760 | /** |
1761 | * e1000_intr_msi - Interrupt Handler | |
1762 | * @irq: interrupt number | |
1763 | * @data: pointer to a network interface device structure | |
1764 | **/ | |
8bb62869 | 1765 | static irqreturn_t e1000_intr_msi(int __always_unused irq, void *data) |
bc7f75fa AK |
1766 | { |
1767 | struct net_device *netdev = data; | |
1768 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1769 | struct e1000_hw *hw = &adapter->hw; | |
1770 | u32 icr = er32(ICR); | |
1771 | ||
e921eb1a | 1772 | /* read ICR disables interrupts using IAM */ |
573cca8c | 1773 | if (icr & E1000_ICR_LSC) { |
f92518dd | 1774 | hw->mac.get_link_status = true; |
e921eb1a | 1775 | /* ICH8 workaround-- Call gig speed drop workaround on cable |
ad68076e BA |
1776 | * disconnect (LSC) before accessing any PHY registers |
1777 | */ | |
bc7f75fa AK |
1778 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1779 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1780 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1781 | |
e921eb1a | 1782 | /* 80003ES2LAN workaround-- For packet buffer work-around on |
bc7f75fa | 1783 | * link down event; disable receives here in the ISR and reset |
ad68076e BA |
1784 | * adapter in watchdog |
1785 | */ | |
bc7f75fa AK |
1786 | if (netif_carrier_ok(netdev) && |
1787 | adapter->flags & FLAG_RX_NEEDS_RESTART) { | |
1788 | /* disable receives */ | |
1789 | u32 rctl = er32(RCTL); | |
6cf08d1c | 1790 | |
bc7f75fa | 1791 | ew32(RCTL, rctl & ~E1000_RCTL_EN); |
12d43f7d | 1792 | adapter->flags |= FLAG_RESTART_NOW; |
bc7f75fa AK |
1793 | } |
1794 | /* guard against interrupt when we're going down */ | |
1795 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1796 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1797 | } | |
1798 | ||
94fb848b | 1799 | /* Reset on uncorrectable ECC error */ |
79849ebc DE |
1800 | if ((icr & E1000_ICR_ECCER) && ((hw->mac.type == e1000_pch_lpt) || |
1801 | (hw->mac.type == e1000_pch_spt))) { | |
94fb848b BA |
1802 | u32 pbeccsts = er32(PBECCSTS); |
1803 | ||
1804 | adapter->corr_errors += | |
1805 | pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; | |
1806 | adapter->uncorr_errors += | |
1807 | (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> | |
1808 | E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; | |
1809 | ||
1810 | /* Do the reset outside of interrupt context */ | |
1811 | schedule_work(&adapter->reset_task); | |
1812 | ||
1813 | /* return immediately since reset is imminent */ | |
1814 | return IRQ_HANDLED; | |
1815 | } | |
1816 | ||
288379f0 | 1817 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1818 | adapter->total_tx_bytes = 0; |
1819 | adapter->total_tx_packets = 0; | |
1820 | adapter->total_rx_bytes = 0; | |
1821 | adapter->total_rx_packets = 0; | |
288379f0 | 1822 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1823 | } |
1824 | ||
1825 | return IRQ_HANDLED; | |
1826 | } | |
1827 | ||
1828 | /** | |
1829 | * e1000_intr - Interrupt Handler | |
1830 | * @irq: interrupt number | |
1831 | * @data: pointer to a network interface device structure | |
1832 | **/ | |
8bb62869 | 1833 | static irqreturn_t e1000_intr(int __always_unused irq, void *data) |
bc7f75fa AK |
1834 | { |
1835 | struct net_device *netdev = data; | |
1836 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1837 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa | 1838 | u32 rctl, icr = er32(ICR); |
4662e82b | 1839 | |
a68ea775 | 1840 | if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
e80bd1d1 | 1841 | return IRQ_NONE; /* Not our interrupt */ |
bc7f75fa | 1842 | |
e921eb1a | 1843 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
ad68076e BA |
1844 | * not set, then the adapter didn't send an interrupt |
1845 | */ | |
bc7f75fa AK |
1846 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
1847 | return IRQ_NONE; | |
1848 | ||
e921eb1a | 1849 | /* Interrupt Auto-Mask...upon reading ICR, |
ad68076e BA |
1850 | * interrupts are masked. No need for the |
1851 | * IMC write | |
1852 | */ | |
bc7f75fa | 1853 | |
573cca8c | 1854 | if (icr & E1000_ICR_LSC) { |
f92518dd | 1855 | hw->mac.get_link_status = true; |
e921eb1a | 1856 | /* ICH8 workaround-- Call gig speed drop workaround on cable |
ad68076e BA |
1857 | * disconnect (LSC) before accessing any PHY registers |
1858 | */ | |
bc7f75fa AK |
1859 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1860 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1861 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1862 | |
e921eb1a | 1863 | /* 80003ES2LAN workaround-- |
bc7f75fa AK |
1864 | * For packet buffer work-around on link down event; |
1865 | * disable receives here in the ISR and | |
1866 | * reset adapter in watchdog | |
1867 | */ | |
1868 | if (netif_carrier_ok(netdev) && | |
1869 | (adapter->flags & FLAG_RX_NEEDS_RESTART)) { | |
1870 | /* disable receives */ | |
1871 | rctl = er32(RCTL); | |
1872 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
12d43f7d | 1873 | adapter->flags |= FLAG_RESTART_NOW; |
bc7f75fa AK |
1874 | } |
1875 | /* guard against interrupt when we're going down */ | |
1876 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1877 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1878 | } | |
1879 | ||
94fb848b | 1880 | /* Reset on uncorrectable ECC error */ |
79849ebc DE |
1881 | if ((icr & E1000_ICR_ECCER) && ((hw->mac.type == e1000_pch_lpt) || |
1882 | (hw->mac.type == e1000_pch_spt))) { | |
94fb848b BA |
1883 | u32 pbeccsts = er32(PBECCSTS); |
1884 | ||
1885 | adapter->corr_errors += | |
1886 | pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; | |
1887 | adapter->uncorr_errors += | |
1888 | (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> | |
1889 | E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; | |
1890 | ||
1891 | /* Do the reset outside of interrupt context */ | |
1892 | schedule_work(&adapter->reset_task); | |
1893 | ||
1894 | /* return immediately since reset is imminent */ | |
1895 | return IRQ_HANDLED; | |
1896 | } | |
1897 | ||
288379f0 | 1898 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1899 | adapter->total_tx_bytes = 0; |
1900 | adapter->total_tx_packets = 0; | |
1901 | adapter->total_rx_bytes = 0; | |
1902 | adapter->total_rx_packets = 0; | |
288379f0 | 1903 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1904 | } |
1905 | ||
1906 | return IRQ_HANDLED; | |
1907 | } | |
1908 | ||
8bb62869 | 1909 | static irqreturn_t e1000_msix_other(int __always_unused irq, void *data) |
4662e82b BA |
1910 | { |
1911 | struct net_device *netdev = data; | |
1912 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1913 | struct e1000_hw *hw = &adapter->hw; | |
1914 | u32 icr = er32(ICR); | |
1915 | ||
1916 | if (!(icr & E1000_ICR_INT_ASSERTED)) { | |
a3c69fef JB |
1917 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1918 | ew32(IMS, E1000_IMS_OTHER); | |
4662e82b BA |
1919 | return IRQ_NONE; |
1920 | } | |
1921 | ||
1922 | if (icr & adapter->eiac_mask) | |
1923 | ew32(ICS, (icr & adapter->eiac_mask)); | |
1924 | ||
1925 | if (icr & E1000_ICR_OTHER) { | |
1926 | if (!(icr & E1000_ICR_LSC)) | |
1927 | goto no_link_interrupt; | |
f92518dd | 1928 | hw->mac.get_link_status = true; |
4662e82b BA |
1929 | /* guard against interrupt when we're going down */ |
1930 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1931 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1932 | } | |
1933 | ||
1934 | no_link_interrupt: | |
a3c69fef JB |
1935 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1936 | ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); | |
4662e82b BA |
1937 | |
1938 | return IRQ_HANDLED; | |
1939 | } | |
1940 | ||
8bb62869 | 1941 | static irqreturn_t e1000_intr_msix_tx(int __always_unused irq, void *data) |
4662e82b BA |
1942 | { |
1943 | struct net_device *netdev = data; | |
1944 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1945 | struct e1000_hw *hw = &adapter->hw; | |
1946 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1947 | ||
4662e82b BA |
1948 | adapter->total_tx_bytes = 0; |
1949 | adapter->total_tx_packets = 0; | |
1950 | ||
55aa6985 | 1951 | if (!e1000_clean_tx_irq(tx_ring)) |
4662e82b BA |
1952 | /* Ring was not completely cleaned, so fire another interrupt */ |
1953 | ew32(ICS, tx_ring->ims_val); | |
1954 | ||
1955 | return IRQ_HANDLED; | |
1956 | } | |
1957 | ||
8bb62869 | 1958 | static irqreturn_t e1000_intr_msix_rx(int __always_unused irq, void *data) |
4662e82b BA |
1959 | { |
1960 | struct net_device *netdev = data; | |
1961 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
55aa6985 | 1962 | struct e1000_ring *rx_ring = adapter->rx_ring; |
4662e82b BA |
1963 | |
1964 | /* Write the ITR value calculated at the end of the | |
1965 | * previous interrupt. | |
1966 | */ | |
55aa6985 BA |
1967 | if (rx_ring->set_itr) { |
1968 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1969 | rx_ring->itr_register); | |
1970 | rx_ring->set_itr = 0; | |
4662e82b BA |
1971 | } |
1972 | ||
288379f0 | 1973 | if (napi_schedule_prep(&adapter->napi)) { |
4662e82b BA |
1974 | adapter->total_rx_bytes = 0; |
1975 | adapter->total_rx_packets = 0; | |
288379f0 | 1976 | __napi_schedule(&adapter->napi); |
4662e82b BA |
1977 | } |
1978 | return IRQ_HANDLED; | |
1979 | } | |
1980 | ||
1981 | /** | |
1982 | * e1000_configure_msix - Configure MSI-X hardware | |
1983 | * | |
1984 | * e1000_configure_msix sets up the hardware to properly | |
1985 | * generate MSI-X interrupts. | |
1986 | **/ | |
1987 | static void e1000_configure_msix(struct e1000_adapter *adapter) | |
1988 | { | |
1989 | struct e1000_hw *hw = &adapter->hw; | |
1990 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1991 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1992 | int vector = 0; | |
1993 | u32 ctrl_ext, ivar = 0; | |
1994 | ||
1995 | adapter->eiac_mask = 0; | |
1996 | ||
1997 | /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ | |
1998 | if (hw->mac.type == e1000_82574) { | |
1999 | u32 rfctl = er32(RFCTL); | |
6cf08d1c | 2000 | |
4662e82b BA |
2001 | rfctl |= E1000_RFCTL_ACK_DIS; |
2002 | ew32(RFCTL, rfctl); | |
2003 | } | |
2004 | ||
4662e82b BA |
2005 | /* Configure Rx vector */ |
2006 | rx_ring->ims_val = E1000_IMS_RXQ0; | |
2007 | adapter->eiac_mask |= rx_ring->ims_val; | |
2008 | if (rx_ring->itr_val) | |
2009 | writel(1000000000 / (rx_ring->itr_val * 256), | |
c5083cf6 | 2010 | rx_ring->itr_register); |
4662e82b | 2011 | else |
c5083cf6 | 2012 | writel(1, rx_ring->itr_register); |
4662e82b BA |
2013 | ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
2014 | ||
2015 | /* Configure Tx vector */ | |
2016 | tx_ring->ims_val = E1000_IMS_TXQ0; | |
2017 | vector++; | |
2018 | if (tx_ring->itr_val) | |
2019 | writel(1000000000 / (tx_ring->itr_val * 256), | |
c5083cf6 | 2020 | tx_ring->itr_register); |
4662e82b | 2021 | else |
c5083cf6 | 2022 | writel(1, tx_ring->itr_register); |
4662e82b BA |
2023 | adapter->eiac_mask |= tx_ring->ims_val; |
2024 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); | |
2025 | ||
2026 | /* set vector for Other Causes, e.g. link changes */ | |
2027 | vector++; | |
2028 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); | |
2029 | if (rx_ring->itr_val) | |
2030 | writel(1000000000 / (rx_ring->itr_val * 256), | |
2031 | hw->hw_addr + E1000_EITR_82574(vector)); | |
2032 | else | |
2033 | writel(1, hw->hw_addr + E1000_EITR_82574(vector)); | |
2034 | ||
2035 | /* Cause Tx interrupts on every write back */ | |
2036 | ivar |= (1 << 31); | |
2037 | ||
2038 | ew32(IVAR, ivar); | |
2039 | ||
2040 | /* enable MSI-X PBA support */ | |
2041 | ctrl_ext = er32(CTRL_EXT); | |
2042 | ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; | |
2043 | ||
2044 | /* Auto-Mask Other interrupts upon ICR read */ | |
4662e82b BA |
2045 | ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
2046 | ctrl_ext |= E1000_CTRL_EXT_EIAME; | |
2047 | ew32(CTRL_EXT, ctrl_ext); | |
2048 | e1e_flush(); | |
2049 | } | |
2050 | ||
2051 | void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) | |
2052 | { | |
2053 | if (adapter->msix_entries) { | |
2054 | pci_disable_msix(adapter->pdev); | |
2055 | kfree(adapter->msix_entries); | |
2056 | adapter->msix_entries = NULL; | |
2057 | } else if (adapter->flags & FLAG_MSI_ENABLED) { | |
2058 | pci_disable_msi(adapter->pdev); | |
2059 | adapter->flags &= ~FLAG_MSI_ENABLED; | |
2060 | } | |
4662e82b BA |
2061 | } |
2062 | ||
2063 | /** | |
2064 | * e1000e_set_interrupt_capability - set MSI or MSI-X if supported | |
2065 | * | |
2066 | * Attempt to configure interrupts using the best available | |
2067 | * capabilities of the hardware and kernel. | |
2068 | **/ | |
2069 | void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) | |
2070 | { | |
2071 | int err; | |
8e86acd7 | 2072 | int i; |
4662e82b BA |
2073 | |
2074 | switch (adapter->int_mode) { | |
2075 | case E1000E_INT_MODE_MSIX: | |
2076 | if (adapter->flags & FLAG_HAS_MSIX) { | |
8e86acd7 JK |
2077 | adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
2078 | adapter->msix_entries = kcalloc(adapter->num_vectors, | |
17e813ec BA |
2079 | sizeof(struct |
2080 | msix_entry), | |
2081 | GFP_KERNEL); | |
4662e82b | 2082 | if (adapter->msix_entries) { |
0cc7c959 AG |
2083 | struct e1000_adapter *a = adapter; |
2084 | ||
8e86acd7 | 2085 | for (i = 0; i < adapter->num_vectors; i++) |
4662e82b BA |
2086 | adapter->msix_entries[i].entry = i; |
2087 | ||
0cc7c959 AG |
2088 | err = pci_enable_msix_range(a->pdev, |
2089 | a->msix_entries, | |
2090 | a->num_vectors, | |
2091 | a->num_vectors); | |
2092 | if (err > 0) | |
4662e82b BA |
2093 | return; |
2094 | } | |
2095 | /* MSI-X failed, so fall through and try MSI */ | |
ef456f85 | 2096 | e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n"); |
4662e82b BA |
2097 | e1000e_reset_interrupt_capability(adapter); |
2098 | } | |
2099 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
2100 | /* Fall through */ | |
2101 | case E1000E_INT_MODE_MSI: | |
2102 | if (!pci_enable_msi(adapter->pdev)) { | |
2103 | adapter->flags |= FLAG_MSI_ENABLED; | |
2104 | } else { | |
2105 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
ef456f85 | 2106 | e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n"); |
4662e82b BA |
2107 | } |
2108 | /* Fall through */ | |
2109 | case E1000E_INT_MODE_LEGACY: | |
2110 | /* Don't do anything; this is the system default */ | |
2111 | break; | |
2112 | } | |
8e86acd7 JK |
2113 | |
2114 | /* store the number of vectors being used */ | |
2115 | adapter->num_vectors = 1; | |
4662e82b BA |
2116 | } |
2117 | ||
2118 | /** | |
2119 | * e1000_request_msix - Initialize MSI-X interrupts | |
2120 | * | |
2121 | * e1000_request_msix allocates MSI-X vectors and requests interrupts from the | |
2122 | * kernel. | |
2123 | **/ | |
2124 | static int e1000_request_msix(struct e1000_adapter *adapter) | |
2125 | { | |
2126 | struct net_device *netdev = adapter->netdev; | |
2127 | int err = 0, vector = 0; | |
2128 | ||
2129 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
79f5e840 BA |
2130 | snprintf(adapter->rx_ring->name, |
2131 | sizeof(adapter->rx_ring->name) - 1, | |
2132 | "%s-rx-0", netdev->name); | |
4662e82b BA |
2133 | else |
2134 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
2135 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 2136 | e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
4662e82b BA |
2137 | netdev); |
2138 | if (err) | |
5015e53a | 2139 | return err; |
c5083cf6 BA |
2140 | adapter->rx_ring->itr_register = adapter->hw.hw_addr + |
2141 | E1000_EITR_82574(vector); | |
4662e82b BA |
2142 | adapter->rx_ring->itr_val = adapter->itr; |
2143 | vector++; | |
2144 | ||
2145 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
79f5e840 BA |
2146 | snprintf(adapter->tx_ring->name, |
2147 | sizeof(adapter->tx_ring->name) - 1, | |
2148 | "%s-tx-0", netdev->name); | |
4662e82b BA |
2149 | else |
2150 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
2151 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 2152 | e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
4662e82b BA |
2153 | netdev); |
2154 | if (err) | |
5015e53a | 2155 | return err; |
c5083cf6 BA |
2156 | adapter->tx_ring->itr_register = adapter->hw.hw_addr + |
2157 | E1000_EITR_82574(vector); | |
4662e82b BA |
2158 | adapter->tx_ring->itr_val = adapter->itr; |
2159 | vector++; | |
2160 | ||
2161 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 2162 | e1000_msix_other, 0, netdev->name, netdev); |
4662e82b | 2163 | if (err) |
5015e53a | 2164 | return err; |
4662e82b BA |
2165 | |
2166 | e1000_configure_msix(adapter); | |
5015e53a | 2167 | |
4662e82b | 2168 | return 0; |
4662e82b BA |
2169 | } |
2170 | ||
f8d59f78 BA |
2171 | /** |
2172 | * e1000_request_irq - initialize interrupts | |
2173 | * | |
2174 | * Attempts to configure interrupts using the best available | |
2175 | * capabilities of the hardware and kernel. | |
2176 | **/ | |
bc7f75fa AK |
2177 | static int e1000_request_irq(struct e1000_adapter *adapter) |
2178 | { | |
2179 | struct net_device *netdev = adapter->netdev; | |
bc7f75fa AK |
2180 | int err; |
2181 | ||
4662e82b BA |
2182 | if (adapter->msix_entries) { |
2183 | err = e1000_request_msix(adapter); | |
2184 | if (!err) | |
2185 | return err; | |
2186 | /* fall back to MSI */ | |
2187 | e1000e_reset_interrupt_capability(adapter); | |
2188 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
2189 | e1000e_set_interrupt_capability(adapter); | |
bc7f75fa | 2190 | } |
4662e82b | 2191 | if (adapter->flags & FLAG_MSI_ENABLED) { |
a0607fd3 | 2192 | err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
4662e82b BA |
2193 | netdev->name, netdev); |
2194 | if (!err) | |
2195 | return err; | |
bc7f75fa | 2196 | |
4662e82b BA |
2197 | /* fall back to legacy interrupt */ |
2198 | e1000e_reset_interrupt_capability(adapter); | |
2199 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
bc7f75fa AK |
2200 | } |
2201 | ||
a0607fd3 | 2202 | err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
4662e82b BA |
2203 | netdev->name, netdev); |
2204 | if (err) | |
2205 | e_err("Unable to allocate interrupt, Error: %d\n", err); | |
2206 | ||
bc7f75fa AK |
2207 | return err; |
2208 | } | |
2209 | ||
2210 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
2211 | { | |
2212 | struct net_device *netdev = adapter->netdev; | |
2213 | ||
4662e82b BA |
2214 | if (adapter->msix_entries) { |
2215 | int vector = 0; | |
2216 | ||
2217 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
2218 | vector++; | |
2219 | ||
2220 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
2221 | vector++; | |
2222 | ||
2223 | /* Other Causes interrupt vector */ | |
2224 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
2225 | return; | |
bc7f75fa | 2226 | } |
4662e82b BA |
2227 | |
2228 | free_irq(adapter->pdev->irq, netdev); | |
bc7f75fa AK |
2229 | } |
2230 | ||
2231 | /** | |
2232 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
2233 | **/ | |
2234 | static void e1000_irq_disable(struct e1000_adapter *adapter) | |
2235 | { | |
2236 | struct e1000_hw *hw = &adapter->hw; | |
2237 | ||
bc7f75fa | 2238 | ew32(IMC, ~0); |
4662e82b BA |
2239 | if (adapter->msix_entries) |
2240 | ew32(EIAC_82574, 0); | |
bc7f75fa | 2241 | e1e_flush(); |
8e86acd7 JK |
2242 | |
2243 | if (adapter->msix_entries) { | |
2244 | int i; | |
6cf08d1c | 2245 | |
8e86acd7 JK |
2246 | for (i = 0; i < adapter->num_vectors; i++) |
2247 | synchronize_irq(adapter->msix_entries[i].vector); | |
2248 | } else { | |
2249 | synchronize_irq(adapter->pdev->irq); | |
2250 | } | |
bc7f75fa AK |
2251 | } |
2252 | ||
2253 | /** | |
2254 | * e1000_irq_enable - Enable default interrupt generation settings | |
2255 | **/ | |
2256 | static void e1000_irq_enable(struct e1000_adapter *adapter) | |
2257 | { | |
2258 | struct e1000_hw *hw = &adapter->hw; | |
2259 | ||
4662e82b BA |
2260 | if (adapter->msix_entries) { |
2261 | ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); | |
2262 | ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); | |
79849ebc DE |
2263 | } else if ((hw->mac.type == e1000_pch_lpt) || |
2264 | (hw->mac.type == e1000_pch_spt)) { | |
94fb848b | 2265 | ew32(IMS, IMS_ENABLE_MASK | E1000_IMS_ECCER); |
4662e82b BA |
2266 | } else { |
2267 | ew32(IMS, IMS_ENABLE_MASK); | |
2268 | } | |
74ef9c39 | 2269 | e1e_flush(); |
bc7f75fa AK |
2270 | } |
2271 | ||
2272 | /** | |
31dbe5b4 | 2273 | * e1000e_get_hw_control - get control of the h/w from f/w |
bc7f75fa AK |
2274 | * @adapter: address of board private structure |
2275 | * | |
31dbe5b4 | 2276 | * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
2277 | * For ASF and Pass Through versions of f/w this means that |
2278 | * the driver is loaded. For AMT version (only with 82573) | |
2279 | * of the f/w this means that the network i/f is open. | |
2280 | **/ | |
31dbe5b4 | 2281 | void e1000e_get_hw_control(struct e1000_adapter *adapter) |
bc7f75fa AK |
2282 | { |
2283 | struct e1000_hw *hw = &adapter->hw; | |
2284 | u32 ctrl_ext; | |
2285 | u32 swsm; | |
2286 | ||
2287 | /* Let firmware know the driver has taken over */ | |
2288 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
2289 | swsm = er32(SWSM); | |
2290 | ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); | |
2291 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
2292 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 2293 | ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
2294 | } |
2295 | } | |
2296 | ||
2297 | /** | |
31dbe5b4 | 2298 | * e1000e_release_hw_control - release control of the h/w to f/w |
bc7f75fa AK |
2299 | * @adapter: address of board private structure |
2300 | * | |
31dbe5b4 | 2301 | * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
2302 | * For ASF and Pass Through versions of f/w this means that the |
2303 | * driver is no longer loaded. For AMT version (only with 82573) i | |
2304 | * of the f/w this means that the network i/f is closed. | |
2305 | * | |
2306 | **/ | |
31dbe5b4 | 2307 | void e1000e_release_hw_control(struct e1000_adapter *adapter) |
bc7f75fa AK |
2308 | { |
2309 | struct e1000_hw *hw = &adapter->hw; | |
2310 | u32 ctrl_ext; | |
2311 | u32 swsm; | |
2312 | ||
2313 | /* Let firmware taken over control of h/w */ | |
2314 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
2315 | swsm = er32(SWSM); | |
2316 | ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); | |
2317 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
2318 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 2319 | ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
2320 | } |
2321 | } | |
2322 | ||
bc7f75fa | 2323 | /** |
49ce9c2c | 2324 | * e1000_alloc_ring_dma - allocate memory for a ring structure |
bc7f75fa AK |
2325 | **/ |
2326 | static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, | |
2327 | struct e1000_ring *ring) | |
2328 | { | |
2329 | struct pci_dev *pdev = adapter->pdev; | |
2330 | ||
2331 | ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, | |
2332 | GFP_KERNEL); | |
2333 | if (!ring->desc) | |
2334 | return -ENOMEM; | |
2335 | ||
2336 | return 0; | |
2337 | } | |
2338 | ||
2339 | /** | |
2340 | * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) | |
55aa6985 | 2341 | * @tx_ring: Tx descriptor ring |
bc7f75fa AK |
2342 | * |
2343 | * Return 0 on success, negative on failure | |
2344 | **/ | |
55aa6985 | 2345 | int e1000e_setup_tx_resources(struct e1000_ring *tx_ring) |
bc7f75fa | 2346 | { |
55aa6985 | 2347 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
2348 | int err = -ENOMEM, size; |
2349 | ||
2350 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
89bf67f1 | 2351 | tx_ring->buffer_info = vzalloc(size); |
bc7f75fa AK |
2352 | if (!tx_ring->buffer_info) |
2353 | goto err; | |
bc7f75fa AK |
2354 | |
2355 | /* round up to nearest 4K */ | |
2356 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); | |
2357 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
2358 | ||
2359 | err = e1000_alloc_ring_dma(adapter, tx_ring); | |
2360 | if (err) | |
2361 | goto err; | |
2362 | ||
2363 | tx_ring->next_to_use = 0; | |
2364 | tx_ring->next_to_clean = 0; | |
bc7f75fa AK |
2365 | |
2366 | return 0; | |
2367 | err: | |
2368 | vfree(tx_ring->buffer_info); | |
44defeb3 | 2369 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
2370 | return err; |
2371 | } | |
2372 | ||
2373 | /** | |
2374 | * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) | |
55aa6985 | 2375 | * @rx_ring: Rx descriptor ring |
bc7f75fa AK |
2376 | * |
2377 | * Returns 0 on success, negative on failure | |
2378 | **/ | |
55aa6985 | 2379 | int e1000e_setup_rx_resources(struct e1000_ring *rx_ring) |
bc7f75fa | 2380 | { |
55aa6985 | 2381 | struct e1000_adapter *adapter = rx_ring->adapter; |
47f44e40 AK |
2382 | struct e1000_buffer *buffer_info; |
2383 | int i, size, desc_len, err = -ENOMEM; | |
bc7f75fa AK |
2384 | |
2385 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
89bf67f1 | 2386 | rx_ring->buffer_info = vzalloc(size); |
bc7f75fa AK |
2387 | if (!rx_ring->buffer_info) |
2388 | goto err; | |
bc7f75fa | 2389 | |
47f44e40 AK |
2390 | for (i = 0; i < rx_ring->count; i++) { |
2391 | buffer_info = &rx_ring->buffer_info[i]; | |
2392 | buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, | |
2393 | sizeof(struct e1000_ps_page), | |
2394 | GFP_KERNEL); | |
2395 | if (!buffer_info->ps_pages) | |
2396 | goto err_pages; | |
2397 | } | |
bc7f75fa AK |
2398 | |
2399 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
2400 | ||
2401 | /* Round up to nearest 4K */ | |
2402 | rx_ring->size = rx_ring->count * desc_len; | |
2403 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
2404 | ||
2405 | err = e1000_alloc_ring_dma(adapter, rx_ring); | |
2406 | if (err) | |
47f44e40 | 2407 | goto err_pages; |
bc7f75fa AK |
2408 | |
2409 | rx_ring->next_to_clean = 0; | |
2410 | rx_ring->next_to_use = 0; | |
2411 | rx_ring->rx_skb_top = NULL; | |
2412 | ||
2413 | return 0; | |
47f44e40 AK |
2414 | |
2415 | err_pages: | |
2416 | for (i = 0; i < rx_ring->count; i++) { | |
2417 | buffer_info = &rx_ring->buffer_info[i]; | |
2418 | kfree(buffer_info->ps_pages); | |
2419 | } | |
bc7f75fa AK |
2420 | err: |
2421 | vfree(rx_ring->buffer_info); | |
e9262447 | 2422 | e_err("Unable to allocate memory for the receive descriptor ring\n"); |
bc7f75fa AK |
2423 | return err; |
2424 | } | |
2425 | ||
2426 | /** | |
2427 | * e1000_clean_tx_ring - Free Tx Buffers | |
55aa6985 | 2428 | * @tx_ring: Tx descriptor ring |
bc7f75fa | 2429 | **/ |
55aa6985 | 2430 | static void e1000_clean_tx_ring(struct e1000_ring *tx_ring) |
bc7f75fa | 2431 | { |
55aa6985 | 2432 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
2433 | struct e1000_buffer *buffer_info; |
2434 | unsigned long size; | |
2435 | unsigned int i; | |
2436 | ||
2437 | for (i = 0; i < tx_ring->count; i++) { | |
2438 | buffer_info = &tx_ring->buffer_info[i]; | |
55aa6985 | 2439 | e1000_put_txbuf(tx_ring, buffer_info); |
bc7f75fa AK |
2440 | } |
2441 | ||
3f0cfa3b | 2442 | netdev_reset_queue(adapter->netdev); |
bc7f75fa AK |
2443 | size = sizeof(struct e1000_buffer) * tx_ring->count; |
2444 | memset(tx_ring->buffer_info, 0, size); | |
2445 | ||
2446 | memset(tx_ring->desc, 0, tx_ring->size); | |
2447 | ||
2448 | tx_ring->next_to_use = 0; | |
2449 | tx_ring->next_to_clean = 0; | |
2450 | ||
c5083cf6 | 2451 | writel(0, tx_ring->head); |
b485dbae | 2452 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
bdc125f7 BA |
2453 | e1000e_update_tdt_wa(tx_ring, 0); |
2454 | else | |
2455 | writel(0, tx_ring->tail); | |
bc7f75fa AK |
2456 | } |
2457 | ||
2458 | /** | |
2459 | * e1000e_free_tx_resources - Free Tx Resources per Queue | |
55aa6985 | 2460 | * @tx_ring: Tx descriptor ring |
bc7f75fa AK |
2461 | * |
2462 | * Free all transmit software resources | |
2463 | **/ | |
55aa6985 | 2464 | void e1000e_free_tx_resources(struct e1000_ring *tx_ring) |
bc7f75fa | 2465 | { |
55aa6985 | 2466 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa | 2467 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa | 2468 | |
55aa6985 | 2469 | e1000_clean_tx_ring(tx_ring); |
bc7f75fa AK |
2470 | |
2471 | vfree(tx_ring->buffer_info); | |
2472 | tx_ring->buffer_info = NULL; | |
2473 | ||
2474 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, | |
2475 | tx_ring->dma); | |
2476 | tx_ring->desc = NULL; | |
2477 | } | |
2478 | ||
2479 | /** | |
2480 | * e1000e_free_rx_resources - Free Rx Resources | |
55aa6985 | 2481 | * @rx_ring: Rx descriptor ring |
bc7f75fa AK |
2482 | * |
2483 | * Free all receive software resources | |
2484 | **/ | |
55aa6985 | 2485 | void e1000e_free_rx_resources(struct e1000_ring *rx_ring) |
bc7f75fa | 2486 | { |
55aa6985 | 2487 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa | 2488 | struct pci_dev *pdev = adapter->pdev; |
47f44e40 | 2489 | int i; |
bc7f75fa | 2490 | |
55aa6985 | 2491 | e1000_clean_rx_ring(rx_ring); |
bc7f75fa | 2492 | |
b1cdfead | 2493 | for (i = 0; i < rx_ring->count; i++) |
47f44e40 | 2494 | kfree(rx_ring->buffer_info[i].ps_pages); |
47f44e40 | 2495 | |
bc7f75fa AK |
2496 | vfree(rx_ring->buffer_info); |
2497 | rx_ring->buffer_info = NULL; | |
2498 | ||
bc7f75fa AK |
2499 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
2500 | rx_ring->dma); | |
2501 | rx_ring->desc = NULL; | |
2502 | } | |
2503 | ||
2504 | /** | |
2505 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
489815ce AK |
2506 | * @adapter: pointer to adapter |
2507 | * @itr_setting: current adapter->itr | |
2508 | * @packets: the number of packets during this measurement interval | |
2509 | * @bytes: the number of bytes during this measurement interval | |
2510 | * | |
bc7f75fa AK |
2511 | * Stores a new ITR value based on packets and byte |
2512 | * counts during the last interrupt. The advantage of per interrupt | |
2513 | * computation is faster updates and more accurate ITR for the current | |
2514 | * traffic pattern. Constants in this function were computed | |
2515 | * based on theoretical maximum wire speed and thresholds were set based | |
2516 | * on testing data as well as attempting to minimize response time | |
4662e82b BA |
2517 | * while increasing bulk throughput. This functionality is controlled |
2518 | * by the InterruptThrottleRate module parameter. | |
bc7f75fa | 2519 | **/ |
8bb62869 | 2520 | static unsigned int e1000_update_itr(u16 itr_setting, int packets, int bytes) |
bc7f75fa AK |
2521 | { |
2522 | unsigned int retval = itr_setting; | |
2523 | ||
2524 | if (packets == 0) | |
5015e53a | 2525 | return itr_setting; |
bc7f75fa AK |
2526 | |
2527 | switch (itr_setting) { | |
2528 | case lowest_latency: | |
2529 | /* handle TSO and jumbo frames */ | |
362e20ca | 2530 | if (bytes / packets > 8000) |
bc7f75fa | 2531 | retval = bulk_latency; |
b1cdfead | 2532 | else if ((packets < 5) && (bytes > 512)) |
bc7f75fa | 2533 | retval = low_latency; |
bc7f75fa | 2534 | break; |
e80bd1d1 | 2535 | case low_latency: /* 50 usec aka 20000 ints/s */ |
bc7f75fa AK |
2536 | if (bytes > 10000) { |
2537 | /* this if handles the TSO accounting */ | |
362e20ca | 2538 | if (bytes / packets > 8000) |
bc7f75fa | 2539 | retval = bulk_latency; |
362e20ca | 2540 | else if ((packets < 10) || ((bytes / packets) > 1200)) |
bc7f75fa | 2541 | retval = bulk_latency; |
b1cdfead | 2542 | else if ((packets > 35)) |
bc7f75fa | 2543 | retval = lowest_latency; |
362e20ca | 2544 | } else if (bytes / packets > 2000) { |
bc7f75fa AK |
2545 | retval = bulk_latency; |
2546 | } else if (packets <= 2 && bytes < 512) { | |
2547 | retval = lowest_latency; | |
2548 | } | |
2549 | break; | |
e80bd1d1 | 2550 | case bulk_latency: /* 250 usec aka 4000 ints/s */ |
bc7f75fa | 2551 | if (bytes > 25000) { |
b1cdfead | 2552 | if (packets > 35) |
bc7f75fa | 2553 | retval = low_latency; |
bc7f75fa AK |
2554 | } else if (bytes < 6000) { |
2555 | retval = low_latency; | |
2556 | } | |
2557 | break; | |
2558 | } | |
2559 | ||
bc7f75fa AK |
2560 | return retval; |
2561 | } | |
2562 | ||
2563 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2564 | { | |
bc7f75fa AK |
2565 | u16 current_itr; |
2566 | u32 new_itr = adapter->itr; | |
2567 | ||
2568 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2569 | if (adapter->link_speed != SPEED_1000) { | |
2570 | current_itr = 0; | |
2571 | new_itr = 4000; | |
2572 | goto set_itr_now; | |
2573 | } | |
2574 | ||
828bac87 BA |
2575 | if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
2576 | new_itr = 0; | |
2577 | goto set_itr_now; | |
2578 | } | |
2579 | ||
8bb62869 BA |
2580 | adapter->tx_itr = e1000_update_itr(adapter->tx_itr, |
2581 | adapter->total_tx_packets, | |
2582 | adapter->total_tx_bytes); | |
bc7f75fa AK |
2583 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2584 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2585 | adapter->tx_itr = low_latency; | |
2586 | ||
8bb62869 BA |
2587 | adapter->rx_itr = e1000_update_itr(adapter->rx_itr, |
2588 | adapter->total_rx_packets, | |
2589 | adapter->total_rx_bytes); | |
bc7f75fa AK |
2590 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2591 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2592 | adapter->rx_itr = low_latency; | |
2593 | ||
2594 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2595 | ||
bc7f75fa | 2596 | /* counts and packets in update_itr are dependent on these numbers */ |
33550cec | 2597 | switch (current_itr) { |
bc7f75fa AK |
2598 | case lowest_latency: |
2599 | new_itr = 70000; | |
2600 | break; | |
2601 | case low_latency: | |
e80bd1d1 | 2602 | new_itr = 20000; /* aka hwitr = ~200 */ |
bc7f75fa AK |
2603 | break; |
2604 | case bulk_latency: | |
2605 | new_itr = 4000; | |
2606 | break; | |
2607 | default: | |
2608 | break; | |
2609 | } | |
2610 | ||
2611 | set_itr_now: | |
2612 | if (new_itr != adapter->itr) { | |
e921eb1a | 2613 | /* this attempts to bias the interrupt rate towards Bulk |
bc7f75fa | 2614 | * by adding intermediate steps when interrupt rate is |
ad68076e BA |
2615 | * increasing |
2616 | */ | |
bc7f75fa | 2617 | new_itr = new_itr > adapter->itr ? |
f0ff4398 | 2618 | min(adapter->itr + (new_itr >> 2), new_itr) : new_itr; |
bc7f75fa | 2619 | adapter->itr = new_itr; |
4662e82b BA |
2620 | adapter->rx_ring->itr_val = new_itr; |
2621 | if (adapter->msix_entries) | |
2622 | adapter->rx_ring->set_itr = 1; | |
2623 | else | |
e3d14b08 | 2624 | e1000e_write_itr(adapter, new_itr); |
bc7f75fa AK |
2625 | } |
2626 | } | |
2627 | ||
22a4cca2 MV |
2628 | /** |
2629 | * e1000e_write_itr - write the ITR value to the appropriate registers | |
2630 | * @adapter: address of board private structure | |
2631 | * @itr: new ITR value to program | |
2632 | * | |
2633 | * e1000e_write_itr determines if the adapter is in MSI-X mode | |
2634 | * and, if so, writes the EITR registers with the ITR value. | |
2635 | * Otherwise, it writes the ITR value into the ITR register. | |
2636 | **/ | |
2637 | void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr) | |
2638 | { | |
2639 | struct e1000_hw *hw = &adapter->hw; | |
2640 | u32 new_itr = itr ? 1000000000 / (itr * 256) : 0; | |
2641 | ||
2642 | if (adapter->msix_entries) { | |
2643 | int vector; | |
2644 | ||
2645 | for (vector = 0; vector < adapter->num_vectors; vector++) | |
2646 | writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector)); | |
2647 | } else { | |
2648 | ew32(ITR, new_itr); | |
2649 | } | |
2650 | } | |
2651 | ||
4662e82b BA |
2652 | /** |
2653 | * e1000_alloc_queues - Allocate memory for all rings | |
2654 | * @adapter: board private structure to initialize | |
2655 | **/ | |
9f9a12f8 | 2656 | static int e1000_alloc_queues(struct e1000_adapter *adapter) |
4662e82b | 2657 | { |
55aa6985 BA |
2658 | int size = sizeof(struct e1000_ring); |
2659 | ||
2660 | adapter->tx_ring = kzalloc(size, GFP_KERNEL); | |
4662e82b BA |
2661 | if (!adapter->tx_ring) |
2662 | goto err; | |
55aa6985 BA |
2663 | adapter->tx_ring->count = adapter->tx_ring_count; |
2664 | adapter->tx_ring->adapter = adapter; | |
4662e82b | 2665 | |
55aa6985 | 2666 | adapter->rx_ring = kzalloc(size, GFP_KERNEL); |
4662e82b BA |
2667 | if (!adapter->rx_ring) |
2668 | goto err; | |
55aa6985 BA |
2669 | adapter->rx_ring->count = adapter->rx_ring_count; |
2670 | adapter->rx_ring->adapter = adapter; | |
4662e82b BA |
2671 | |
2672 | return 0; | |
2673 | err: | |
2674 | e_err("Unable to allocate memory for queues\n"); | |
2675 | kfree(adapter->rx_ring); | |
2676 | kfree(adapter->tx_ring); | |
2677 | return -ENOMEM; | |
2678 | } | |
2679 | ||
bc7f75fa | 2680 | /** |
c58c8a78 | 2681 | * e1000e_poll - NAPI Rx polling callback |
ad68076e | 2682 | * @napi: struct associated with this polling callback |
c58c8a78 | 2683 | * @weight: number of packets driver is allowed to process this poll |
bc7f75fa | 2684 | **/ |
c58c8a78 | 2685 | static int e1000e_poll(struct napi_struct *napi, int weight) |
bc7f75fa | 2686 | { |
c58c8a78 BA |
2687 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, |
2688 | napi); | |
4662e82b | 2689 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa | 2690 | struct net_device *poll_dev = adapter->netdev; |
679e8a0f | 2691 | int tx_cleaned = 1, work_done = 0; |
bc7f75fa | 2692 | |
4cf1653a | 2693 | adapter = netdev_priv(poll_dev); |
bc7f75fa | 2694 | |
c58c8a78 BA |
2695 | if (!adapter->msix_entries || |
2696 | (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) | |
2697 | tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring); | |
4662e82b | 2698 | |
c58c8a78 | 2699 | adapter->clean_rx(adapter->rx_ring, &work_done, weight); |
d2c7ddd6 | 2700 | |
12d04a3c | 2701 | if (!tx_cleaned) |
c58c8a78 | 2702 | work_done = weight; |
bc7f75fa | 2703 | |
c58c8a78 BA |
2704 | /* If weight not fully consumed, exit the polling mode */ |
2705 | if (work_done < weight) { | |
bc7f75fa AK |
2706 | if (adapter->itr_setting & 3) |
2707 | e1000_set_itr(adapter); | |
288379f0 | 2708 | napi_complete(napi); |
a3c69fef JB |
2709 | if (!test_bit(__E1000_DOWN, &adapter->state)) { |
2710 | if (adapter->msix_entries) | |
2711 | ew32(IMS, adapter->rx_ring->ims_val); | |
2712 | else | |
2713 | e1000_irq_enable(adapter); | |
2714 | } | |
bc7f75fa AK |
2715 | } |
2716 | ||
2717 | return work_done; | |
2718 | } | |
2719 | ||
80d5c368 | 2720 | static int e1000_vlan_rx_add_vid(struct net_device *netdev, |
603cdca9 | 2721 | __always_unused __be16 proto, u16 vid) |
bc7f75fa AK |
2722 | { |
2723 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2724 | struct e1000_hw *hw = &adapter->hw; | |
2725 | u32 vfta, index; | |
2726 | ||
2727 | /* don't update vlan cookie if already programmed */ | |
2728 | if ((adapter->hw.mng_cookie.status & | |
2729 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2730 | (vid == adapter->mng_vlan_id)) | |
8e586137 | 2731 | return 0; |
caaddaf8 | 2732 | |
bc7f75fa | 2733 | /* add VID to filter table */ |
caaddaf8 BA |
2734 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2735 | index = (vid >> 5) & 0x7F; | |
2736 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2737 | vfta |= (1 << (vid & 0x1F)); | |
2738 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2739 | } | |
86d70e53 JK |
2740 | |
2741 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2742 | |
2743 | return 0; | |
bc7f75fa AK |
2744 | } |
2745 | ||
80d5c368 | 2746 | static int e1000_vlan_rx_kill_vid(struct net_device *netdev, |
603cdca9 | 2747 | __always_unused __be16 proto, u16 vid) |
bc7f75fa AK |
2748 | { |
2749 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2750 | struct e1000_hw *hw = &adapter->hw; | |
2751 | u32 vfta, index; | |
2752 | ||
bc7f75fa AK |
2753 | if ((adapter->hw.mng_cookie.status & |
2754 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2755 | (vid == adapter->mng_vlan_id)) { | |
2756 | /* release control to f/w */ | |
31dbe5b4 | 2757 | e1000e_release_hw_control(adapter); |
8e586137 | 2758 | return 0; |
bc7f75fa AK |
2759 | } |
2760 | ||
2761 | /* remove VID from filter table */ | |
caaddaf8 BA |
2762 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2763 | index = (vid >> 5) & 0x7F; | |
2764 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2765 | vfta &= ~(1 << (vid & 0x1F)); | |
2766 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2767 | } | |
86d70e53 JK |
2768 | |
2769 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2770 | |
2771 | return 0; | |
bc7f75fa AK |
2772 | } |
2773 | ||
86d70e53 JK |
2774 | /** |
2775 | * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering | |
2776 | * @adapter: board private structure to initialize | |
2777 | **/ | |
2778 | static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter) | |
bc7f75fa AK |
2779 | { |
2780 | struct net_device *netdev = adapter->netdev; | |
86d70e53 JK |
2781 | struct e1000_hw *hw = &adapter->hw; |
2782 | u32 rctl; | |
bc7f75fa | 2783 | |
86d70e53 JK |
2784 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2785 | /* disable VLAN receive filtering */ | |
2786 | rctl = er32(RCTL); | |
2787 | rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); | |
2788 | ew32(RCTL, rctl); | |
2789 | ||
2790 | if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { | |
80d5c368 PM |
2791 | e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), |
2792 | adapter->mng_vlan_id); | |
86d70e53 | 2793 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
bc7f75fa | 2794 | } |
bc7f75fa AK |
2795 | } |
2796 | } | |
2797 | ||
86d70e53 JK |
2798 | /** |
2799 | * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering | |
2800 | * @adapter: board private structure to initialize | |
2801 | **/ | |
2802 | static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) | |
2803 | { | |
2804 | struct e1000_hw *hw = &adapter->hw; | |
2805 | u32 rctl; | |
2806 | ||
2807 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
2808 | /* enable VLAN receive filtering */ | |
2809 | rctl = er32(RCTL); | |
2810 | rctl |= E1000_RCTL_VFE; | |
2811 | rctl &= ~E1000_RCTL_CFIEN; | |
2812 | ew32(RCTL, rctl); | |
2813 | } | |
2814 | } | |
bc7f75fa | 2815 | |
86d70e53 JK |
2816 | /** |
2817 | * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping | |
2818 | * @adapter: board private structure to initialize | |
2819 | **/ | |
2820 | static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) | |
bc7f75fa | 2821 | { |
bc7f75fa | 2822 | struct e1000_hw *hw = &adapter->hw; |
86d70e53 | 2823 | u32 ctrl; |
bc7f75fa | 2824 | |
86d70e53 JK |
2825 | /* disable VLAN tag insert/strip */ |
2826 | ctrl = er32(CTRL); | |
2827 | ctrl &= ~E1000_CTRL_VME; | |
2828 | ew32(CTRL, ctrl); | |
2829 | } | |
bc7f75fa | 2830 | |
86d70e53 JK |
2831 | /** |
2832 | * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping | |
2833 | * @adapter: board private structure to initialize | |
2834 | **/ | |
2835 | static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter) | |
2836 | { | |
2837 | struct e1000_hw *hw = &adapter->hw; | |
2838 | u32 ctrl; | |
bc7f75fa | 2839 | |
86d70e53 JK |
2840 | /* enable VLAN tag insert/strip */ |
2841 | ctrl = er32(CTRL); | |
2842 | ctrl |= E1000_CTRL_VME; | |
2843 | ew32(CTRL, ctrl); | |
2844 | } | |
bc7f75fa | 2845 | |
86d70e53 JK |
2846 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
2847 | { | |
2848 | struct net_device *netdev = adapter->netdev; | |
2849 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
2850 | u16 old_vid = adapter->mng_vlan_id; | |
2851 | ||
e5fe2541 | 2852 | if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
80d5c368 | 2853 | e1000_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid); |
86d70e53 | 2854 | adapter->mng_vlan_id = vid; |
bc7f75fa AK |
2855 | } |
2856 | ||
86d70e53 | 2857 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid)) |
80d5c368 | 2858 | e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), old_vid); |
bc7f75fa AK |
2859 | } |
2860 | ||
2861 | static void e1000_restore_vlan(struct e1000_adapter *adapter) | |
2862 | { | |
2863 | u16 vid; | |
2864 | ||
80d5c368 | 2865 | e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); |
bc7f75fa | 2866 | |
86d70e53 | 2867 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
80d5c368 | 2868 | e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
bc7f75fa AK |
2869 | } |
2870 | ||
cd791618 | 2871 | static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
bc7f75fa AK |
2872 | { |
2873 | struct e1000_hw *hw = &adapter->hw; | |
cd791618 | 2874 | u32 manc, manc2h, mdef, i, j; |
bc7f75fa AK |
2875 | |
2876 | if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) | |
2877 | return; | |
2878 | ||
2879 | manc = er32(MANC); | |
2880 | ||
e921eb1a | 2881 | /* enable receiving management packets to the host. this will probably |
bc7f75fa | 2882 | * generate destination unreachable messages from the host OS, but |
ad68076e BA |
2883 | * the packets will be handled on SMBUS |
2884 | */ | |
bc7f75fa AK |
2885 | manc |= E1000_MANC_EN_MNG2HOST; |
2886 | manc2h = er32(MANC2H); | |
cd791618 BA |
2887 | |
2888 | switch (hw->mac.type) { | |
2889 | default: | |
2890 | manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); | |
2891 | break; | |
2892 | case e1000_82574: | |
2893 | case e1000_82583: | |
e921eb1a | 2894 | /* Check if IPMI pass-through decision filter already exists; |
cd791618 BA |
2895 | * if so, enable it. |
2896 | */ | |
2897 | for (i = 0, j = 0; i < 8; i++) { | |
2898 | mdef = er32(MDEF(i)); | |
2899 | ||
2900 | /* Ignore filters with anything other than IPMI ports */ | |
3b21b508 | 2901 | if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
cd791618 BA |
2902 | continue; |
2903 | ||
2904 | /* Enable this decision filter in MANC2H */ | |
2905 | if (mdef) | |
2906 | manc2h |= (1 << i); | |
2907 | ||
2908 | j |= mdef; | |
2909 | } | |
2910 | ||
2911 | if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) | |
2912 | break; | |
2913 | ||
2914 | /* Create new decision filter in an empty filter */ | |
2915 | for (i = 0, j = 0; i < 8; i++) | |
2916 | if (er32(MDEF(i)) == 0) { | |
2917 | ew32(MDEF(i), (E1000_MDEF_PORT_623 | | |
2918 | E1000_MDEF_PORT_664)); | |
2919 | manc2h |= (1 << 1); | |
2920 | j++; | |
2921 | break; | |
2922 | } | |
2923 | ||
2924 | if (!j) | |
2925 | e_warn("Unable to create IPMI pass-through filter\n"); | |
2926 | break; | |
2927 | } | |
2928 | ||
bc7f75fa AK |
2929 | ew32(MANC2H, manc2h); |
2930 | ew32(MANC, manc); | |
2931 | } | |
2932 | ||
2933 | /** | |
af667a29 | 2934 | * e1000_configure_tx - Configure Transmit Unit after Reset |
bc7f75fa AK |
2935 | * @adapter: board private structure |
2936 | * | |
2937 | * Configure the Tx unit of the MAC after a reset. | |
2938 | **/ | |
2939 | static void e1000_configure_tx(struct e1000_adapter *adapter) | |
2940 | { | |
2941 | struct e1000_hw *hw = &adapter->hw; | |
2942 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2943 | u64 tdba; | |
e7e834aa | 2944 | u32 tdlen, tctl, tarc; |
bc7f75fa AK |
2945 | |
2946 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
2947 | tdba = tx_ring->dma; | |
2948 | tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); | |
1e36052e BA |
2949 | ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
2950 | ew32(TDBAH(0), (tdba >> 32)); | |
2951 | ew32(TDLEN(0), tdlen); | |
2952 | ew32(TDH(0), 0); | |
2953 | ew32(TDT(0), 0); | |
2954 | tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0); | |
2955 | tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0); | |
bc7f75fa | 2956 | |
bc7f75fa AK |
2957 | /* Set the Tx Interrupt Delay register */ |
2958 | ew32(TIDV, adapter->tx_int_delay); | |
ad68076e | 2959 | /* Tx irq moderation */ |
bc7f75fa AK |
2960 | ew32(TADV, adapter->tx_abs_int_delay); |
2961 | ||
3a3b7586 JB |
2962 | if (adapter->flags2 & FLAG2_DMA_BURST) { |
2963 | u32 txdctl = er32(TXDCTL(0)); | |
6cf08d1c | 2964 | |
3a3b7586 JB |
2965 | txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | |
2966 | E1000_TXDCTL_WTHRESH); | |
e921eb1a | 2967 | /* set up some performance related parameters to encourage the |
3a3b7586 JB |
2968 | * hardware to use the bus more efficiently in bursts, depends |
2969 | * on the tx_int_delay to be enabled, | |
8edc0e62 | 2970 | * wthresh = 1 ==> burst write is disabled to avoid Tx stalls |
3a3b7586 JB |
2971 | * hthresh = 1 ==> prefetch when one or more available |
2972 | * pthresh = 0x1f ==> prefetch if internal cache 31 or less | |
2973 | * BEWARE: this seems to work but should be considered first if | |
af667a29 | 2974 | * there are Tx hangs or other Tx related bugs |
3a3b7586 JB |
2975 | */ |
2976 | txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; | |
2977 | ew32(TXDCTL(0), txdctl); | |
3a3b7586 | 2978 | } |
56032be7 BA |
2979 | /* erratum work around: set txdctl the same for both queues */ |
2980 | ew32(TXDCTL(1), er32(TXDCTL(0))); | |
3a3b7586 | 2981 | |
e7e834aa DE |
2982 | /* Program the Transmit Control Register */ |
2983 | tctl = er32(TCTL); | |
2984 | tctl &= ~E1000_TCTL_CT; | |
2985 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
2986 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
2987 | ||
bc7f75fa | 2988 | if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
e9ec2c0f | 2989 | tarc = er32(TARC(0)); |
e921eb1a | 2990 | /* set the speed mode bit, we'll clear it if we're not at |
ad68076e BA |
2991 | * gigabit link later |
2992 | */ | |
bc7f75fa AK |
2993 | #define SPEED_MODE_BIT (1 << 21) |
2994 | tarc |= SPEED_MODE_BIT; | |
e9ec2c0f | 2995 | ew32(TARC(0), tarc); |
bc7f75fa AK |
2996 | } |
2997 | ||
2998 | /* errata: program both queues to unweighted RR */ | |
2999 | if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { | |
e9ec2c0f | 3000 | tarc = er32(TARC(0)); |
bc7f75fa | 3001 | tarc |= 1; |
e9ec2c0f JK |
3002 | ew32(TARC(0), tarc); |
3003 | tarc = er32(TARC(1)); | |
bc7f75fa | 3004 | tarc |= 1; |
e9ec2c0f | 3005 | ew32(TARC(1), tarc); |
bc7f75fa AK |
3006 | } |
3007 | ||
bc7f75fa AK |
3008 | /* Setup Transmit Descriptor Settings for eop descriptor */ |
3009 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; | |
3010 | ||
3011 | /* only set IDE if we are delaying interrupts using the timers */ | |
3012 | if (adapter->tx_int_delay) | |
3013 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
3014 | ||
3015 | /* enable Report Status bit */ | |
3016 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
3017 | ||
e7e834aa DE |
3018 | ew32(TCTL, tctl); |
3019 | ||
57cde763 | 3020 | hw->mac.ops.config_collision_dist(hw); |
79849ebc DE |
3021 | |
3022 | /* SPT Si errata workaround to avoid data corruption */ | |
3023 | if (hw->mac.type == e1000_pch_spt) { | |
3024 | u32 reg_val; | |
3025 | ||
3026 | reg_val = er32(IOSFPC); | |
3027 | reg_val |= E1000_RCTL_RDMTS_HEX; | |
3028 | ew32(IOSFPC, reg_val); | |
3029 | ||
3030 | reg_val = er32(TARC(0)); | |
3031 | reg_val |= E1000_TARC0_CB_MULTIQ_3_REQ; | |
3032 | ew32(TARC(0), reg_val); | |
3033 | } | |
bc7f75fa AK |
3034 | } |
3035 | ||
3036 | /** | |
3037 | * e1000_setup_rctl - configure the receive control registers | |
3038 | * @adapter: Board private structure | |
3039 | **/ | |
3040 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
3041 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
3042 | static void e1000_setup_rctl(struct e1000_adapter *adapter) | |
3043 | { | |
3044 | struct e1000_hw *hw = &adapter->hw; | |
3045 | u32 rctl, rfctl; | |
bc7f75fa AK |
3046 | u32 pages = 0; |
3047 | ||
b20a7744 DE |
3048 | /* Workaround Si errata on PCHx - configure jumbo frame flow. |
3049 | * If jumbo frames not set, program related MAC/PHY registers | |
3050 | * to h/w defaults | |
3051 | */ | |
3052 | if (hw->mac.type >= e1000_pch2lan) { | |
3053 | s32 ret_val; | |
3054 | ||
3055 | if (adapter->netdev->mtu > ETH_DATA_LEN) | |
3056 | ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); | |
3057 | else | |
3058 | ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); | |
3059 | ||
3060 | if (ret_val) | |
3061 | e_dbg("failed to enable|disable jumbo frame workaround mode\n"); | |
3062 | } | |
a1ce6473 | 3063 | |
bc7f75fa AK |
3064 | /* Program MC offset vector base */ |
3065 | rctl = er32(RCTL); | |
3066 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
3067 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
f0ff4398 BA |
3068 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
3069 | (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
bc7f75fa AK |
3070 | |
3071 | /* Do not Store bad packets */ | |
3072 | rctl &= ~E1000_RCTL_SBP; | |
3073 | ||
3074 | /* Enable Long Packet receive */ | |
3075 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
3076 | rctl &= ~E1000_RCTL_LPE; | |
3077 | else | |
3078 | rctl |= E1000_RCTL_LPE; | |
3079 | ||
eb7c3adb JK |
3080 | /* Some systems expect that the CRC is included in SMBUS traffic. The |
3081 | * hardware strips the CRC before sending to both SMBUS (BMC) and to | |
3082 | * host memory when this is enabled | |
3083 | */ | |
3084 | if (adapter->flags2 & FLAG2_CRC_STRIPPING) | |
3085 | rctl |= E1000_RCTL_SECRC; | |
5918bd88 | 3086 | |
a4f58f54 BA |
3087 | /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
3088 | if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { | |
3089 | u16 phy_data; | |
3090 | ||
3091 | e1e_rphy(hw, PHY_REG(770, 26), &phy_data); | |
3092 | phy_data &= 0xfff8; | |
3093 | phy_data |= (1 << 2); | |
3094 | e1e_wphy(hw, PHY_REG(770, 26), phy_data); | |
3095 | ||
3096 | e1e_rphy(hw, 22, &phy_data); | |
3097 | phy_data &= 0x0fff; | |
3098 | phy_data |= (1 << 14); | |
3099 | e1e_wphy(hw, 0x10, 0x2823); | |
3100 | e1e_wphy(hw, 0x11, 0x0003); | |
3101 | e1e_wphy(hw, 22, phy_data); | |
3102 | } | |
3103 | ||
bc7f75fa AK |
3104 | /* Setup buffer sizes */ |
3105 | rctl &= ~E1000_RCTL_SZ_4096; | |
3106 | rctl |= E1000_RCTL_BSEX; | |
3107 | switch (adapter->rx_buffer_len) { | |
bc7f75fa AK |
3108 | case 2048: |
3109 | default: | |
3110 | rctl |= E1000_RCTL_SZ_2048; | |
3111 | rctl &= ~E1000_RCTL_BSEX; | |
3112 | break; | |
3113 | case 4096: | |
3114 | rctl |= E1000_RCTL_SZ_4096; | |
3115 | break; | |
3116 | case 8192: | |
3117 | rctl |= E1000_RCTL_SZ_8192; | |
3118 | break; | |
3119 | case 16384: | |
3120 | rctl |= E1000_RCTL_SZ_16384; | |
3121 | break; | |
3122 | } | |
3123 | ||
5f450212 BA |
3124 | /* Enable Extended Status in all Receive Descriptors */ |
3125 | rfctl = er32(RFCTL); | |
3126 | rfctl |= E1000_RFCTL_EXTEN; | |
f6bd5577 | 3127 | ew32(RFCTL, rfctl); |
5f450212 | 3128 | |
e921eb1a | 3129 | /* 82571 and greater support packet-split where the protocol |
bc7f75fa AK |
3130 | * header is placed in skb->data and the packet data is |
3131 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
3132 | * In the case of a non-split, skb->data is linearly filled, | |
3133 | * followed by the page buffers. Therefore, skb->data is | |
3134 | * sized to hold the largest protocol header. | |
3135 | * | |
3136 | * allocations using alloc_page take too long for regular MTU | |
3137 | * so only enable packet split for jumbo frames | |
3138 | * | |
3139 | * Using pages when the page size is greater than 16k wastes | |
3140 | * a lot of memory, since we allocate 3 pages at all times | |
3141 | * per packet. | |
3142 | */ | |
bc7f75fa | 3143 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
79d4e908 | 3144 | if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
bc7f75fa | 3145 | adapter->rx_ps_pages = pages; |
97ac8cae BA |
3146 | else |
3147 | adapter->rx_ps_pages = 0; | |
bc7f75fa AK |
3148 | |
3149 | if (adapter->rx_ps_pages) { | |
90da0669 BA |
3150 | u32 psrctl = 0; |
3151 | ||
140a7480 AK |
3152 | /* Enable Packet split descriptors */ |
3153 | rctl |= E1000_RCTL_DTYP_PS; | |
bc7f75fa | 3154 | |
e5fe2541 | 3155 | psrctl |= adapter->rx_ps_bsize0 >> E1000_PSRCTL_BSIZE0_SHIFT; |
bc7f75fa AK |
3156 | |
3157 | switch (adapter->rx_ps_pages) { | |
3158 | case 3: | |
e5fe2541 BA |
3159 | psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE3_SHIFT; |
3160 | /* fall-through */ | |
bc7f75fa | 3161 | case 2: |
e5fe2541 BA |
3162 | psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE2_SHIFT; |
3163 | /* fall-through */ | |
bc7f75fa | 3164 | case 1: |
e5fe2541 | 3165 | psrctl |= PAGE_SIZE >> E1000_PSRCTL_BSIZE1_SHIFT; |
bc7f75fa AK |
3166 | break; |
3167 | } | |
3168 | ||
3169 | ew32(PSRCTL, psrctl); | |
3170 | } | |
3171 | ||
cf955e6c BG |
3172 | /* This is useful for sniffing bad packets. */ |
3173 | if (adapter->netdev->features & NETIF_F_RXALL) { | |
3174 | /* UPE and MPE will be handled by normal PROMISC logic | |
e921eb1a BA |
3175 | * in e1000e_set_rx_mode |
3176 | */ | |
e80bd1d1 BA |
3177 | rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
3178 | E1000_RCTL_BAM | /* RX All Bcast Pkts */ | |
3179 | E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ | |
cf955e6c | 3180 | |
e80bd1d1 BA |
3181 | rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ |
3182 | E1000_RCTL_DPF | /* Allow filtered pause */ | |
3183 | E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ | |
cf955e6c BG |
3184 | /* Do not mess with E1000_CTRL_VME, it affects transmit as well, |
3185 | * and that breaks VLANs. | |
3186 | */ | |
3187 | } | |
3188 | ||
bc7f75fa | 3189 | ew32(RCTL, rctl); |
318a94d6 | 3190 | /* just started the receive unit, no need to restart */ |
12d43f7d | 3191 | adapter->flags &= ~FLAG_RESTART_NOW; |
bc7f75fa AK |
3192 | } |
3193 | ||
3194 | /** | |
3195 | * e1000_configure_rx - Configure Receive Unit after Reset | |
3196 | * @adapter: board private structure | |
3197 | * | |
3198 | * Configure the Rx unit of the MAC after a reset. | |
3199 | **/ | |
3200 | static void e1000_configure_rx(struct e1000_adapter *adapter) | |
3201 | { | |
3202 | struct e1000_hw *hw = &adapter->hw; | |
3203 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
3204 | u64 rdba; | |
3205 | u32 rdlen, rctl, rxcsum, ctrl_ext; | |
3206 | ||
3207 | if (adapter->rx_ps_pages) { | |
3208 | /* this is a 32 byte descriptor */ | |
3209 | rdlen = rx_ring->count * | |
af667a29 | 3210 | sizeof(union e1000_rx_desc_packet_split); |
bc7f75fa AK |
3211 | adapter->clean_rx = e1000_clean_rx_irq_ps; |
3212 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
97ac8cae | 3213 | } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
5f450212 | 3214 | rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
97ac8cae BA |
3215 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
3216 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
bc7f75fa | 3217 | } else { |
5f450212 | 3218 | rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
bc7f75fa AK |
3219 | adapter->clean_rx = e1000_clean_rx_irq; |
3220 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
3221 | } | |
3222 | ||
3223 | /* disable receives while setting up the descriptors */ | |
3224 | rctl = er32(RCTL); | |
7f99ae63 BA |
3225 | if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
3226 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
bc7f75fa | 3227 | e1e_flush(); |
1bba4386 | 3228 | usleep_range(10000, 20000); |
bc7f75fa | 3229 | |
3a3b7586 | 3230 | if (adapter->flags2 & FLAG2_DMA_BURST) { |
e921eb1a | 3231 | /* set the writeback threshold (only takes effect if the RDTR |
3a3b7586 | 3232 | * is set). set GRAN=1 and write back up to 0x4 worth, and |
af667a29 | 3233 | * enable prefetching of 0x20 Rx descriptors |
3a3b7586 JB |
3234 | * granularity = 01 |
3235 | * wthresh = 04, | |
3236 | * hthresh = 04, | |
3237 | * pthresh = 0x20 | |
3238 | */ | |
3239 | ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); | |
3240 | ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); | |
3241 | ||
e921eb1a | 3242 | /* override the delay timers for enabling bursting, only if |
3a3b7586 JB |
3243 | * the value was not set by the user via module options |
3244 | */ | |
3245 | if (adapter->rx_int_delay == DEFAULT_RDTR) | |
3246 | adapter->rx_int_delay = BURST_RDTR; | |
3247 | if (adapter->rx_abs_int_delay == DEFAULT_RADV) | |
3248 | adapter->rx_abs_int_delay = BURST_RADV; | |
3249 | } | |
3250 | ||
bc7f75fa AK |
3251 | /* set the Receive Delay Timer Register */ |
3252 | ew32(RDTR, adapter->rx_int_delay); | |
3253 | ||
3254 | /* irq moderation */ | |
3255 | ew32(RADV, adapter->rx_abs_int_delay); | |
828bac87 | 3256 | if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
22a4cca2 | 3257 | e1000e_write_itr(adapter, adapter->itr); |
bc7f75fa AK |
3258 | |
3259 | ctrl_ext = er32(CTRL_EXT); | |
bc7f75fa AK |
3260 | /* Auto-Mask interrupts upon ICR access */ |
3261 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
3262 | ew32(IAM, 0xffffffff); | |
3263 | ew32(CTRL_EXT, ctrl_ext); | |
3264 | e1e_flush(); | |
3265 | ||
e921eb1a | 3266 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
ad68076e BA |
3267 | * the Base and Length of the Rx Descriptor Ring |
3268 | */ | |
bc7f75fa | 3269 | rdba = rx_ring->dma; |
1e36052e BA |
3270 | ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
3271 | ew32(RDBAH(0), (rdba >> 32)); | |
3272 | ew32(RDLEN(0), rdlen); | |
3273 | ew32(RDH(0), 0); | |
3274 | ew32(RDT(0), 0); | |
3275 | rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0); | |
3276 | rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0); | |
bc7f75fa AK |
3277 | |
3278 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
3279 | rxcsum = er32(RXCSUM); | |
2e1706f2 | 3280 | if (adapter->netdev->features & NETIF_F_RXCSUM) |
bc7f75fa | 3281 | rxcsum |= E1000_RXCSUM_TUOFL; |
2e1706f2 | 3282 | else |
bc7f75fa | 3283 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
bc7f75fa AK |
3284 | ew32(RXCSUM, rxcsum); |
3285 | ||
3e35d991 BA |
3286 | /* With jumbo frames, excessive C-state transition latencies result |
3287 | * in dropped transactions. | |
3288 | */ | |
3289 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
3290 | u32 lat = | |
3291 | ((er32(PBA) & E1000_PBA_RXA_MASK) * 1024 - | |
3292 | adapter->max_frame_size) * 8 / 1000; | |
3293 | ||
3294 | if (adapter->flags & FLAG_IS_ICH) { | |
53ec5498 | 3295 | u32 rxdctl = er32(RXDCTL(0)); |
6cf08d1c | 3296 | |
53ec5498 | 3297 | ew32(RXDCTL(0), rxdctl | 0x3); |
53ec5498 | 3298 | } |
3e35d991 BA |
3299 | |
3300 | pm_qos_update_request(&adapter->netdev->pm_qos_req, lat); | |
3301 | } else { | |
3302 | pm_qos_update_request(&adapter->netdev->pm_qos_req, | |
3303 | PM_QOS_DEFAULT_VALUE); | |
97ac8cae | 3304 | } |
bc7f75fa AK |
3305 | |
3306 | /* Enable Receives */ | |
3307 | ew32(RCTL, rctl); | |
3308 | } | |
3309 | ||
3310 | /** | |
ef9b965a JB |
3311 | * e1000e_write_mc_addr_list - write multicast addresses to MTA |
3312 | * @netdev: network interface device structure | |
bc7f75fa | 3313 | * |
ef9b965a JB |
3314 | * Writes multicast address list to the MTA hash table. |
3315 | * Returns: -ENOMEM on failure | |
3316 | * 0 on no addresses written | |
3317 | * X on writing X addresses to MTA | |
3318 | */ | |
3319 | static int e1000e_write_mc_addr_list(struct net_device *netdev) | |
3320 | { | |
3321 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3322 | struct e1000_hw *hw = &adapter->hw; | |
3323 | struct netdev_hw_addr *ha; | |
3324 | u8 *mta_list; | |
3325 | int i; | |
3326 | ||
3327 | if (netdev_mc_empty(netdev)) { | |
3328 | /* nothing to program, so clear mc list */ | |
3329 | hw->mac.ops.update_mc_addr_list(hw, NULL, 0); | |
3330 | return 0; | |
3331 | } | |
3332 | ||
3333 | mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC); | |
3334 | if (!mta_list) | |
3335 | return -ENOMEM; | |
3336 | ||
3337 | /* update_mc_addr_list expects a packed array of only addresses. */ | |
3338 | i = 0; | |
3339 | netdev_for_each_mc_addr(ha, netdev) | |
f0ff4398 | 3340 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
ef9b965a JB |
3341 | |
3342 | hw->mac.ops.update_mc_addr_list(hw, mta_list, i); | |
3343 | kfree(mta_list); | |
3344 | ||
3345 | return netdev_mc_count(netdev); | |
3346 | } | |
3347 | ||
3348 | /** | |
3349 | * e1000e_write_uc_addr_list - write unicast addresses to RAR table | |
3350 | * @netdev: network interface device structure | |
bc7f75fa | 3351 | * |
ef9b965a JB |
3352 | * Writes unicast address list to the RAR table. |
3353 | * Returns: -ENOMEM on failure/insufficient address space | |
3354 | * 0 on no addresses written | |
3355 | * X on writing X addresses to the RAR table | |
bc7f75fa | 3356 | **/ |
ef9b965a | 3357 | static int e1000e_write_uc_addr_list(struct net_device *netdev) |
bc7f75fa | 3358 | { |
ef9b965a JB |
3359 | struct e1000_adapter *adapter = netdev_priv(netdev); |
3360 | struct e1000_hw *hw = &adapter->hw; | |
b3e5bf1f | 3361 | unsigned int rar_entries; |
ef9b965a JB |
3362 | int count = 0; |
3363 | ||
b3e5bf1f DE |
3364 | rar_entries = hw->mac.ops.rar_get_count(hw); |
3365 | ||
ef9b965a JB |
3366 | /* save a rar entry for our hardware address */ |
3367 | rar_entries--; | |
3368 | ||
3369 | /* save a rar entry for the LAA workaround */ | |
3370 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) | |
3371 | rar_entries--; | |
3372 | ||
3373 | /* return ENOMEM indicating insufficient memory for addresses */ | |
3374 | if (netdev_uc_count(netdev) > rar_entries) | |
3375 | return -ENOMEM; | |
3376 | ||
3377 | if (!netdev_uc_empty(netdev) && rar_entries) { | |
3378 | struct netdev_hw_addr *ha; | |
3379 | ||
e921eb1a | 3380 | /* write the addresses in reverse order to avoid write |
ef9b965a JB |
3381 | * combining |
3382 | */ | |
3383 | netdev_for_each_uc_addr(ha, netdev) { | |
b3e5bf1f DE |
3384 | int rval; |
3385 | ||
ef9b965a JB |
3386 | if (!rar_entries) |
3387 | break; | |
b3e5bf1f DE |
3388 | rval = hw->mac.ops.rar_set(hw, ha->addr, rar_entries--); |
3389 | if (rval < 0) | |
3390 | return -ENOMEM; | |
ef9b965a JB |
3391 | count++; |
3392 | } | |
3393 | } | |
3394 | ||
3395 | /* zero out the remaining RAR entries not used above */ | |
3396 | for (; rar_entries > 0; rar_entries--) { | |
3397 | ew32(RAH(rar_entries), 0); | |
3398 | ew32(RAL(rar_entries), 0); | |
3399 | } | |
3400 | e1e_flush(); | |
3401 | ||
3402 | return count; | |
bc7f75fa AK |
3403 | } |
3404 | ||
3405 | /** | |
ef9b965a | 3406 | * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set |
bc7f75fa AK |
3407 | * @netdev: network interface device structure |
3408 | * | |
ef9b965a JB |
3409 | * The ndo_set_rx_mode entry point is called whenever the unicast or multicast |
3410 | * address list or the network interface flags are updated. This routine is | |
3411 | * responsible for configuring the hardware for proper unicast, multicast, | |
bc7f75fa AK |
3412 | * promiscuous mode, and all-multi behavior. |
3413 | **/ | |
ef9b965a | 3414 | static void e1000e_set_rx_mode(struct net_device *netdev) |
bc7f75fa AK |
3415 | { |
3416 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3417 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa | 3418 | u32 rctl; |
bc7f75fa | 3419 | |
63eb48f1 DE |
3420 | if (pm_runtime_suspended(netdev->dev.parent)) |
3421 | return; | |
3422 | ||
bc7f75fa | 3423 | /* Check for Promiscuous and All Multicast modes */ |
bc7f75fa AK |
3424 | rctl = er32(RCTL); |
3425 | ||
ef9b965a JB |
3426 | /* clear the affected bits */ |
3427 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
3428 | ||
bc7f75fa AK |
3429 | if (netdev->flags & IFF_PROMISC) { |
3430 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
86d70e53 JK |
3431 | /* Do not hardware filter VLANs in promisc mode */ |
3432 | e1000e_vlan_filter_disable(adapter); | |
bc7f75fa | 3433 | } else { |
ef9b965a | 3434 | int count; |
3d3a1676 | 3435 | |
746b9f02 PM |
3436 | if (netdev->flags & IFF_ALLMULTI) { |
3437 | rctl |= E1000_RCTL_MPE; | |
746b9f02 | 3438 | } else { |
e921eb1a | 3439 | /* Write addresses to the MTA, if the attempt fails |
ef9b965a JB |
3440 | * then we should just turn on promiscuous mode so |
3441 | * that we can at least receive multicast traffic | |
3442 | */ | |
3443 | count = e1000e_write_mc_addr_list(netdev); | |
3444 | if (count < 0) | |
3445 | rctl |= E1000_RCTL_MPE; | |
746b9f02 | 3446 | } |
86d70e53 | 3447 | e1000e_vlan_filter_enable(adapter); |
e921eb1a | 3448 | /* Write addresses to available RAR registers, if there is not |
ef9b965a JB |
3449 | * sufficient space to store all the addresses then enable |
3450 | * unicast promiscuous mode | |
bc7f75fa | 3451 | */ |
ef9b965a JB |
3452 | count = e1000e_write_uc_addr_list(netdev); |
3453 | if (count < 0) | |
3454 | rctl |= E1000_RCTL_UPE; | |
bc7f75fa | 3455 | } |
86d70e53 | 3456 | |
ef9b965a JB |
3457 | ew32(RCTL, rctl); |
3458 | ||
f646968f | 3459 | if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) |
86d70e53 JK |
3460 | e1000e_vlan_strip_enable(adapter); |
3461 | else | |
3462 | e1000e_vlan_strip_disable(adapter); | |
bc7f75fa AK |
3463 | } |
3464 | ||
70495a50 BA |
3465 | static void e1000e_setup_rss_hash(struct e1000_adapter *adapter) |
3466 | { | |
3467 | struct e1000_hw *hw = &adapter->hw; | |
3468 | u32 mrqc, rxcsum; | |
5c8d19da | 3469 | u32 rss_key[10]; |
70495a50 | 3470 | int i; |
70495a50 | 3471 | |
5c8d19da | 3472 | netdev_rss_key_fill(rss_key, sizeof(rss_key)); |
70495a50 | 3473 | for (i = 0; i < 10; i++) |
5c8d19da | 3474 | ew32(RSSRK(i), rss_key[i]); |
70495a50 BA |
3475 | |
3476 | /* Direct all traffic to queue 0 */ | |
3477 | for (i = 0; i < 32; i++) | |
3478 | ew32(RETA(i), 0); | |
3479 | ||
e921eb1a | 3480 | /* Disable raw packet checksumming so that RSS hash is placed in |
70495a50 BA |
3481 | * descriptor on writeback. |
3482 | */ | |
3483 | rxcsum = er32(RXCSUM); | |
3484 | rxcsum |= E1000_RXCSUM_PCSD; | |
3485 | ||
3486 | ew32(RXCSUM, rxcsum); | |
3487 | ||
3488 | mrqc = (E1000_MRQC_RSS_FIELD_IPV4 | | |
3489 | E1000_MRQC_RSS_FIELD_IPV4_TCP | | |
3490 | E1000_MRQC_RSS_FIELD_IPV6 | | |
3491 | E1000_MRQC_RSS_FIELD_IPV6_TCP | | |
3492 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); | |
3493 | ||
3494 | ew32(MRQC, mrqc); | |
3495 | } | |
3496 | ||
b67e1913 BA |
3497 | /** |
3498 | * e1000e_get_base_timinca - get default SYSTIM time increment attributes | |
3499 | * @adapter: board private structure | |
3500 | * @timinca: pointer to returned time increment attributes | |
3501 | * | |
3502 | * Get attributes for incrementing the System Time Register SYSTIML/H at | |
3503 | * the default base frequency, and set the cyclecounter shift value. | |
3504 | **/ | |
d89777bf | 3505 | s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca) |
b67e1913 BA |
3506 | { |
3507 | struct e1000_hw *hw = &adapter->hw; | |
3508 | u32 incvalue, incperiod, shift; | |
3509 | ||
79849ebc DE |
3510 | /* Make sure clock is enabled on I217/I218/I219 before checking |
3511 | * the frequency | |
3512 | */ | |
3513 | if (((hw->mac.type == e1000_pch_lpt) || | |
3514 | (hw->mac.type == e1000_pch_spt)) && | |
b67e1913 BA |
3515 | !(er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) && |
3516 | !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_ENABLED)) { | |
3517 | u32 fextnvm7 = er32(FEXTNVM7); | |
3518 | ||
3519 | if (!(fextnvm7 & (1 << 0))) { | |
3520 | ew32(FEXTNVM7, fextnvm7 | (1 << 0)); | |
3521 | e1e_flush(); | |
3522 | } | |
3523 | } | |
3524 | ||
3525 | switch (hw->mac.type) { | |
3526 | case e1000_pch2lan: | |
3527 | case e1000_pch_lpt: | |
79849ebc DE |
3528 | case e1000_pch_spt: |
3529 | /* On I217, I218 and I219, the clock frequency is 25MHz | |
3530 | * or 96MHz as indicated by the System Clock Frequency | |
3531 | * Indication | |
b67e1913 | 3532 | */ |
79849ebc DE |
3533 | if (((hw->mac.type != e1000_pch_lpt) && |
3534 | (hw->mac.type != e1000_pch_spt)) || | |
b67e1913 BA |
3535 | (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_SYSCFI)) { |
3536 | /* Stable 96MHz frequency */ | |
3537 | incperiod = INCPERIOD_96MHz; | |
3538 | incvalue = INCVALUE_96MHz; | |
3539 | shift = INCVALUE_SHIFT_96MHz; | |
3540 | adapter->cc.shift = shift + INCPERIOD_SHIFT_96MHz; | |
3541 | break; | |
3542 | } | |
3543 | /* fall-through */ | |
3544 | case e1000_82574: | |
3545 | case e1000_82583: | |
3546 | /* Stable 25MHz frequency */ | |
3547 | incperiod = INCPERIOD_25MHz; | |
3548 | incvalue = INCVALUE_25MHz; | |
3549 | shift = INCVALUE_SHIFT_25MHz; | |
3550 | adapter->cc.shift = shift; | |
3551 | break; | |
3552 | default: | |
3553 | return -EINVAL; | |
3554 | } | |
3555 | ||
3556 | *timinca = ((incperiod << E1000_TIMINCA_INCPERIOD_SHIFT) | | |
3557 | ((incvalue << shift) & E1000_TIMINCA_INCVALUE_MASK)); | |
3558 | ||
3559 | return 0; | |
3560 | } | |
3561 | ||
3562 | /** | |
3563 | * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable | |
3564 | * @adapter: board private structure | |
3565 | * | |
3566 | * Outgoing time stamping can be enabled and disabled. Play nice and | |
3567 | * disable it when requested, although it shouldn't cause any overhead | |
3568 | * when no packet needs it. At most one packet in the queue may be | |
3569 | * marked for time stamping, otherwise it would be impossible to tell | |
3570 | * for sure to which packet the hardware time stamp belongs. | |
3571 | * | |
3572 | * Incoming time stamping has to be configured via the hardware filters. | |
3573 | * Not all combinations are supported, in particular event type has to be | |
3574 | * specified. Matching the kind of event packet is not supported, with the | |
3575 | * exception of "all V2 events regardless of level 2 or 4". | |
3576 | **/ | |
62d7e3a2 BH |
3577 | static int e1000e_config_hwtstamp(struct e1000_adapter *adapter, |
3578 | struct hwtstamp_config *config) | |
b67e1913 BA |
3579 | { |
3580 | struct e1000_hw *hw = &adapter->hw; | |
b67e1913 BA |
3581 | u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED; |
3582 | u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; | |
d89777bf BA |
3583 | u32 rxmtrl = 0; |
3584 | u16 rxudp = 0; | |
3585 | bool is_l4 = false; | |
3586 | bool is_l2 = false; | |
b67e1913 BA |
3587 | u32 regval; |
3588 | s32 ret_val; | |
3589 | ||
3590 | if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP)) | |
3591 | return -EINVAL; | |
3592 | ||
3593 | /* flags reserved for future extensions - must be zero */ | |
3594 | if (config->flags) | |
3595 | return -EINVAL; | |
3596 | ||
3597 | switch (config->tx_type) { | |
3598 | case HWTSTAMP_TX_OFF: | |
3599 | tsync_tx_ctl = 0; | |
3600 | break; | |
3601 | case HWTSTAMP_TX_ON: | |
3602 | break; | |
3603 | default: | |
3604 | return -ERANGE; | |
3605 | } | |
3606 | ||
3607 | switch (config->rx_filter) { | |
3608 | case HWTSTAMP_FILTER_NONE: | |
3609 | tsync_rx_ctl = 0; | |
3610 | break; | |
d89777bf BA |
3611 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
3612 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; | |
3613 | rxmtrl = E1000_RXMTRL_PTP_V1_SYNC_MESSAGE; | |
3614 | is_l4 = true; | |
3615 | break; | |
3616 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: | |
3617 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; | |
3618 | rxmtrl = E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE; | |
3619 | is_l4 = true; | |
3620 | break; | |
3621 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
3622 | /* Also time stamps V2 L2 Path Delay Request/Response */ | |
3623 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2; | |
3624 | rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE; | |
3625 | is_l2 = true; | |
3626 | break; | |
3627 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
3628 | /* Also time stamps V2 L2 Path Delay Request/Response. */ | |
3629 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2; | |
3630 | rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE; | |
3631 | is_l2 = true; | |
3632 | break; | |
3633 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
3634 | /* Hardware cannot filter just V2 L4 Sync messages; | |
3635 | * fall-through to V2 (both L2 and L4) Sync. | |
3636 | */ | |
3637 | case HWTSTAMP_FILTER_PTP_V2_SYNC: | |
3638 | /* Also time stamps V2 Path Delay Request/Response. */ | |
3639 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; | |
3640 | rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE; | |
3641 | is_l2 = true; | |
3642 | is_l4 = true; | |
3643 | break; | |
3644 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: | |
3645 | /* Hardware cannot filter just V2 L4 Delay Request messages; | |
3646 | * fall-through to V2 (both L2 and L4) Delay Request. | |
3647 | */ | |
3648 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
3649 | /* Also time stamps V2 Path Delay Request/Response. */ | |
3650 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; | |
3651 | rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE; | |
3652 | is_l2 = true; | |
3653 | is_l4 = true; | |
3654 | break; | |
3655 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: | |
3656 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: | |
3657 | /* Hardware cannot filter just V2 L4 or L2 Event messages; | |
3658 | * fall-through to all V2 (both L2 and L4) Events. | |
3659 | */ | |
3660 | case HWTSTAMP_FILTER_PTP_V2_EVENT: | |
3661 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2; | |
3662 | config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; | |
3663 | is_l2 = true; | |
3664 | is_l4 = true; | |
3665 | break; | |
3666 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: | |
3667 | /* For V1, the hardware can only filter Sync messages or | |
3668 | * Delay Request messages but not both so fall-through to | |
3669 | * time stamp all packets. | |
3670 | */ | |
b67e1913 | 3671 | case HWTSTAMP_FILTER_ALL: |
d89777bf BA |
3672 | is_l2 = true; |
3673 | is_l4 = true; | |
b67e1913 BA |
3674 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; |
3675 | config->rx_filter = HWTSTAMP_FILTER_ALL; | |
3676 | break; | |
3677 | default: | |
3678 | return -ERANGE; | |
3679 | } | |
3680 | ||
62d7e3a2 BH |
3681 | adapter->hwtstamp_config = *config; |
3682 | ||
b67e1913 BA |
3683 | /* enable/disable Tx h/w time stamping */ |
3684 | regval = er32(TSYNCTXCTL); | |
3685 | regval &= ~E1000_TSYNCTXCTL_ENABLED; | |
3686 | regval |= tsync_tx_ctl; | |
3687 | ew32(TSYNCTXCTL, regval); | |
3688 | if ((er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) != | |
3689 | (regval & E1000_TSYNCTXCTL_ENABLED)) { | |
3690 | e_err("Timesync Tx Control register not set as expected\n"); | |
3691 | return -EAGAIN; | |
3692 | } | |
3693 | ||
3694 | /* enable/disable Rx h/w time stamping */ | |
3695 | regval = er32(TSYNCRXCTL); | |
3696 | regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK); | |
3697 | regval |= tsync_rx_ctl; | |
3698 | ew32(TSYNCRXCTL, regval); | |
3699 | if ((er32(TSYNCRXCTL) & (E1000_TSYNCRXCTL_ENABLED | | |
3700 | E1000_TSYNCRXCTL_TYPE_MASK)) != | |
3701 | (regval & (E1000_TSYNCRXCTL_ENABLED | | |
3702 | E1000_TSYNCRXCTL_TYPE_MASK))) { | |
3703 | e_err("Timesync Rx Control register not set as expected\n"); | |
3704 | return -EAGAIN; | |
3705 | } | |
3706 | ||
d89777bf BA |
3707 | /* L2: define ethertype filter for time stamped packets */ |
3708 | if (is_l2) | |
3709 | rxmtrl |= ETH_P_1588; | |
3710 | ||
3711 | /* define which PTP packets get time stamped */ | |
3712 | ew32(RXMTRL, rxmtrl); | |
3713 | ||
3714 | /* Filter by destination port */ | |
3715 | if (is_l4) { | |
3716 | rxudp = PTP_EV_PORT; | |
3717 | cpu_to_be16s(&rxudp); | |
3718 | } | |
3719 | ew32(RXUDP, rxudp); | |
3720 | ||
3721 | e1e_flush(); | |
3722 | ||
b67e1913 | 3723 | /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */ |
70806a7f BA |
3724 | er32(RXSTMPH); |
3725 | er32(TXSTMPH); | |
b67e1913 BA |
3726 | |
3727 | /* Get and set the System Time Register SYSTIM base frequency */ | |
3728 | ret_val = e1000e_get_base_timinca(adapter, ®val); | |
3729 | if (ret_val) | |
3730 | return ret_val; | |
3731 | ew32(TIMINCA, regval); | |
3732 | ||
3733 | /* reset the ns time counter */ | |
3734 | timecounter_init(&adapter->tc, &adapter->cc, | |
3735 | ktime_to_ns(ktime_get_real())); | |
3736 | ||
3737 | return 0; | |
3738 | } | |
3739 | ||
bc7f75fa | 3740 | /** |
ad68076e | 3741 | * e1000_configure - configure the hardware for Rx and Tx |
bc7f75fa AK |
3742 | * @adapter: private board structure |
3743 | **/ | |
3744 | static void e1000_configure(struct e1000_adapter *adapter) | |
3745 | { | |
55aa6985 BA |
3746 | struct e1000_ring *rx_ring = adapter->rx_ring; |
3747 | ||
ef9b965a | 3748 | e1000e_set_rx_mode(adapter->netdev); |
bc7f75fa AK |
3749 | |
3750 | e1000_restore_vlan(adapter); | |
cd791618 | 3751 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
3752 | |
3753 | e1000_configure_tx(adapter); | |
70495a50 BA |
3754 | |
3755 | if (adapter->netdev->features & NETIF_F_RXHASH) | |
3756 | e1000e_setup_rss_hash(adapter); | |
bc7f75fa AK |
3757 | e1000_setup_rctl(adapter); |
3758 | e1000_configure_rx(adapter); | |
55aa6985 | 3759 | adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL); |
bc7f75fa AK |
3760 | } |
3761 | ||
3762 | /** | |
3763 | * e1000e_power_up_phy - restore link in case the phy was powered down | |
3764 | * @adapter: address of board private structure | |
3765 | * | |
3766 | * The phy may be powered down to save power and turn off link when the | |
3767 | * driver is unloaded and wake on lan is not enabled (among others) | |
3768 | * *** this routine MUST be followed by a call to e1000e_reset *** | |
3769 | **/ | |
3770 | void e1000e_power_up_phy(struct e1000_adapter *adapter) | |
3771 | { | |
17f208de BA |
3772 | if (adapter->hw.phy.ops.power_up) |
3773 | adapter->hw.phy.ops.power_up(&adapter->hw); | |
bc7f75fa AK |
3774 | |
3775 | adapter->hw.mac.ops.setup_link(&adapter->hw); | |
3776 | } | |
3777 | ||
3778 | /** | |
3779 | * e1000_power_down_phy - Power down the PHY | |
3780 | * | |
17f208de BA |
3781 | * Power down the PHY so no link is implied when interface is down. |
3782 | * The PHY cannot be powered down if management or WoL is active. | |
bc7f75fa AK |
3783 | */ |
3784 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
3785 | { | |
17f208de BA |
3786 | if (adapter->hw.phy.ops.power_down) |
3787 | adapter->hw.phy.ops.power_down(&adapter->hw); | |
bc7f75fa AK |
3788 | } |
3789 | ||
3790 | /** | |
3791 | * e1000e_reset - bring the hardware into a known good state | |
3792 | * | |
3793 | * This function boots the hardware and enables some settings that | |
3794 | * require a configuration cycle of the hardware - those cannot be | |
3795 | * set/changed during runtime. After reset the device needs to be | |
ad68076e | 3796 | * properly configured for Rx, Tx etc. |
bc7f75fa AK |
3797 | */ |
3798 | void e1000e_reset(struct e1000_adapter *adapter) | |
3799 | { | |
3800 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
318a94d6 | 3801 | struct e1000_fc_info *fc = &adapter->hw.fc; |
bc7f75fa AK |
3802 | struct e1000_hw *hw = &adapter->hw; |
3803 | u32 tx_space, min_tx_space, min_rx_space; | |
318a94d6 | 3804 | u32 pba = adapter->pba; |
bc7f75fa AK |
3805 | u16 hwm; |
3806 | ||
ad68076e | 3807 | /* reset Packet Buffer Allocation to default */ |
318a94d6 | 3808 | ew32(PBA, pba); |
df762464 | 3809 | |
318a94d6 | 3810 | if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
e921eb1a | 3811 | /* To maintain wire speed transmits, the Tx FIFO should be |
bc7f75fa AK |
3812 | * large enough to accommodate two full transmit packets, |
3813 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
3814 | * the Rx FIFO should be large enough to accommodate at least | |
3815 | * one full receive packet and is similarly rounded up and | |
ad68076e BA |
3816 | * expressed in KB. |
3817 | */ | |
df762464 | 3818 | pba = er32(PBA); |
bc7f75fa | 3819 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
df762464 | 3820 | tx_space = pba >> 16; |
bc7f75fa | 3821 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
df762464 | 3822 | pba &= 0xffff; |
e921eb1a | 3823 | /* the Tx fifo also stores 16 bytes of information about the Tx |
ad68076e | 3824 | * but don't include ethernet FCS because hardware appends it |
318a94d6 JK |
3825 | */ |
3826 | min_tx_space = (adapter->max_frame_size + | |
e5fe2541 | 3827 | sizeof(struct e1000_tx_desc) - ETH_FCS_LEN) * 2; |
bc7f75fa AK |
3828 | min_tx_space = ALIGN(min_tx_space, 1024); |
3829 | min_tx_space >>= 10; | |
3830 | /* software strips receive CRC, so leave room for it */ | |
318a94d6 | 3831 | min_rx_space = adapter->max_frame_size; |
bc7f75fa AK |
3832 | min_rx_space = ALIGN(min_rx_space, 1024); |
3833 | min_rx_space >>= 10; | |
3834 | ||
e921eb1a | 3835 | /* If current Tx allocation is less than the min Tx FIFO size, |
bc7f75fa | 3836 | * and the min Tx FIFO size is less than the current Rx FIFO |
ad68076e BA |
3837 | * allocation, take space away from current Rx allocation |
3838 | */ | |
df762464 AK |
3839 | if ((tx_space < min_tx_space) && |
3840 | ((min_tx_space - tx_space) < pba)) { | |
3841 | pba -= min_tx_space - tx_space; | |
bc7f75fa | 3842 | |
e921eb1a | 3843 | /* if short on Rx space, Rx wins and must trump Tx |
419e551c | 3844 | * adjustment |
ad68076e | 3845 | */ |
79d4e908 | 3846 | if (pba < min_rx_space) |
df762464 | 3847 | pba = min_rx_space; |
bc7f75fa | 3848 | } |
df762464 AK |
3849 | |
3850 | ew32(PBA, pba); | |
bc7f75fa AK |
3851 | } |
3852 | ||
e921eb1a | 3853 | /* flow control settings |
ad68076e | 3854 | * |
38eb394e | 3855 | * The high water mark must be low enough to fit one full frame |
bc7f75fa AK |
3856 | * (or the size used for early receive) above it in the Rx FIFO. |
3857 | * Set it to the lower of: | |
3858 | * - 90% of the Rx FIFO size, and | |
38eb394e | 3859 | * - the full Rx FIFO size minus one full frame |
ad68076e | 3860 | */ |
d3738bb8 BA |
3861 | if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
3862 | fc->pause_time = 0xFFFF; | |
3863 | else | |
3864 | fc->pause_time = E1000_FC_PAUSE_TIME; | |
b20caa80 | 3865 | fc->send_xon = true; |
d3738bb8 BA |
3866 | fc->current_mode = fc->requested_mode; |
3867 | ||
3868 | switch (hw->mac.type) { | |
79d4e908 BA |
3869 | case e1000_ich9lan: |
3870 | case e1000_ich10lan: | |
3871 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
3872 | pba = 14; | |
3873 | ew32(PBA, pba); | |
3874 | fc->high_water = 0x2800; | |
3875 | fc->low_water = fc->high_water - 8; | |
3876 | break; | |
3877 | } | |
3878 | /* fall-through */ | |
d3738bb8 | 3879 | default: |
79d4e908 BA |
3880 | hwm = min(((pba << 10) * 9 / 10), |
3881 | ((pba << 10) - adapter->max_frame_size)); | |
d3738bb8 | 3882 | |
e80bd1d1 | 3883 | fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
d3738bb8 BA |
3884 | fc->low_water = fc->high_water - 8; |
3885 | break; | |
3886 | case e1000_pchlan: | |
e921eb1a | 3887 | /* Workaround PCH LOM adapter hangs with certain network |
38eb394e BA |
3888 | * loads. If hangs persist, try disabling Tx flow control. |
3889 | */ | |
3890 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
3891 | fc->high_water = 0x3500; | |
e80bd1d1 | 3892 | fc->low_water = 0x1500; |
38eb394e BA |
3893 | } else { |
3894 | fc->high_water = 0x5000; | |
e80bd1d1 | 3895 | fc->low_water = 0x3000; |
38eb394e | 3896 | } |
a305595b | 3897 | fc->refresh_time = 0x1000; |
d3738bb8 BA |
3898 | break; |
3899 | case e1000_pch2lan: | |
2fbe4526 | 3900 | case e1000_pch_lpt: |
79849ebc | 3901 | case e1000_pch_spt: |
d3738bb8 | 3902 | fc->refresh_time = 0x0400; |
347b5201 BA |
3903 | |
3904 | if (adapter->netdev->mtu <= ETH_DATA_LEN) { | |
3905 | fc->high_water = 0x05C20; | |
3906 | fc->low_water = 0x05048; | |
3907 | fc->pause_time = 0x0650; | |
3908 | break; | |
828bac87 | 3909 | } |
347b5201 | 3910 | |
ce345e08 BA |
3911 | pba = 14; |
3912 | ew32(PBA, pba); | |
347b5201 BA |
3913 | fc->high_water = ((pba << 10) * 9 / 10) & E1000_FCRTH_RTH; |
3914 | fc->low_water = ((pba << 10) * 8 / 10) & E1000_FCRTL_RTL; | |
d3738bb8 | 3915 | break; |
38eb394e | 3916 | } |
bc7f75fa | 3917 | |
e921eb1a | 3918 | /* Alignment of Tx data is on an arbitrary byte boundary with the |
d821a4c4 BA |
3919 | * maximum size per Tx descriptor limited only to the transmit |
3920 | * allocation of the packet buffer minus 96 bytes with an upper | |
3921 | * limit of 24KB due to receive synchronization limitations. | |
3922 | */ | |
3923 | adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96, | |
3924 | 24 << 10); | |
3925 | ||
e921eb1a | 3926 | /* Disable Adaptive Interrupt Moderation if 2 full packets cannot |
79d4e908 | 3927 | * fit in receive buffer. |
828bac87 BA |
3928 | */ |
3929 | if (adapter->itr_setting & 0x3) { | |
79d4e908 | 3930 | if ((adapter->max_frame_size * 2) > (pba << 10)) { |
828bac87 BA |
3931 | if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
3932 | dev_info(&adapter->pdev->dev, | |
17e813ec | 3933 | "Interrupt Throttle Rate off\n"); |
828bac87 | 3934 | adapter->flags2 |= FLAG2_DISABLE_AIM; |
22a4cca2 | 3935 | e1000e_write_itr(adapter, 0); |
828bac87 BA |
3936 | } |
3937 | } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { | |
3938 | dev_info(&adapter->pdev->dev, | |
17e813ec | 3939 | "Interrupt Throttle Rate on\n"); |
828bac87 BA |
3940 | adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
3941 | adapter->itr = 20000; | |
22a4cca2 | 3942 | e1000e_write_itr(adapter, adapter->itr); |
828bac87 BA |
3943 | } |
3944 | } | |
3945 | ||
bc7f75fa AK |
3946 | /* Allow time for pending master requests to run */ |
3947 | mac->ops.reset_hw(hw); | |
97ac8cae | 3948 | |
e921eb1a | 3949 | /* For parts with AMT enabled, let the firmware know |
97ac8cae BA |
3950 | * that the network interface is in control |
3951 | */ | |
c43bc57e | 3952 | if (adapter->flags & FLAG_HAS_AMT) |
31dbe5b4 | 3953 | e1000e_get_hw_control(adapter); |
97ac8cae | 3954 | |
bc7f75fa AK |
3955 | ew32(WUC, 0); |
3956 | ||
3957 | if (mac->ops.init_hw(hw)) | |
44defeb3 | 3958 | e_err("Hardware Error\n"); |
bc7f75fa AK |
3959 | |
3960 | e1000_update_mng_vlan(adapter); | |
3961 | ||
3962 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
3963 | ew32(VET, ETH_P_8021Q); | |
3964 | ||
3965 | e1000e_reset_adaptive(hw); | |
31dbe5b4 | 3966 | |
b67e1913 | 3967 | /* initialize systim and reset the ns time counter */ |
62d7e3a2 | 3968 | e1000e_config_hwtstamp(adapter, &adapter->hwtstamp_config); |
b67e1913 | 3969 | |
d495bcb8 BA |
3970 | /* Set EEE advertisement as appropriate */ |
3971 | if (adapter->flags2 & FLAG2_HAS_EEE) { | |
3972 | s32 ret_val; | |
3973 | u16 adv_addr; | |
3974 | ||
3975 | switch (hw->phy.type) { | |
3976 | case e1000_phy_82579: | |
3977 | adv_addr = I82579_EEE_ADVERTISEMENT; | |
3978 | break; | |
3979 | case e1000_phy_i217: | |
3980 | adv_addr = I217_EEE_ADVERTISEMENT; | |
3981 | break; | |
3982 | default: | |
3983 | dev_err(&adapter->pdev->dev, | |
3984 | "Invalid PHY type setting EEE advertisement\n"); | |
3985 | return; | |
3986 | } | |
3987 | ||
3988 | ret_val = hw->phy.ops.acquire(hw); | |
3989 | if (ret_val) { | |
3990 | dev_err(&adapter->pdev->dev, | |
3991 | "EEE advertisement - unable to acquire PHY\n"); | |
3992 | return; | |
3993 | } | |
3994 | ||
3995 | e1000_write_emi_reg_locked(hw, adv_addr, | |
3996 | hw->dev_spec.ich8lan.eee_disable ? | |
3997 | 0 : adapter->eee_advert); | |
3998 | ||
3999 | hw->phy.ops.release(hw); | |
4000 | } | |
4001 | ||
31dbe5b4 | 4002 | if (!netif_running(adapter->netdev) && |
28002099 | 4003 | !test_bit(__E1000_TESTING, &adapter->state)) |
31dbe5b4 | 4004 | e1000_power_down_phy(adapter); |
31dbe5b4 | 4005 | |
bc7f75fa AK |
4006 | e1000_get_phy_info(hw); |
4007 | ||
918d7197 BA |
4008 | if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
4009 | !(adapter->flags & FLAG_SMART_POWER_DOWN)) { | |
bc7f75fa | 4010 | u16 phy_data = 0; |
e921eb1a | 4011 | /* speed up time to link by disabling smart power down, ignore |
bc7f75fa | 4012 | * the return value of this function because there is nothing |
ad68076e BA |
4013 | * different we would do if it failed |
4014 | */ | |
bc7f75fa AK |
4015 | e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
4016 | phy_data &= ~IGP02E1000_PM_SPD; | |
4017 | e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); | |
4018 | } | |
bc7f75fa AK |
4019 | } |
4020 | ||
4021 | int e1000e_up(struct e1000_adapter *adapter) | |
4022 | { | |
4023 | struct e1000_hw *hw = &adapter->hw; | |
4024 | ||
4025 | /* hardware has been reset, we need to reload some things */ | |
4026 | e1000_configure(adapter); | |
4027 | ||
4028 | clear_bit(__E1000_DOWN, &adapter->state); | |
4029 | ||
4662e82b BA |
4030 | if (adapter->msix_entries) |
4031 | e1000_configure_msix(adapter); | |
bc7f75fa AK |
4032 | e1000_irq_enable(adapter); |
4033 | ||
400484fa | 4034 | netif_start_queue(adapter->netdev); |
4cb9be7a | 4035 | |
bc7f75fa | 4036 | /* fire a link change interrupt to start the watchdog */ |
52a9b231 BA |
4037 | if (adapter->msix_entries) |
4038 | ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); | |
4039 | else | |
4040 | ew32(ICS, E1000_ICS_LSC); | |
4041 | ||
bc7f75fa AK |
4042 | return 0; |
4043 | } | |
4044 | ||
713b3c9e JB |
4045 | static void e1000e_flush_descriptors(struct e1000_adapter *adapter) |
4046 | { | |
4047 | struct e1000_hw *hw = &adapter->hw; | |
4048 | ||
4049 | if (!(adapter->flags2 & FLAG2_DMA_BURST)) | |
4050 | return; | |
4051 | ||
4052 | /* flush pending descriptor writebacks to memory */ | |
4053 | ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); | |
4054 | ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); | |
4055 | ||
4056 | /* execute the writes immediately */ | |
4057 | e1e_flush(); | |
bf03085f | 4058 | |
e921eb1a | 4059 | /* due to rare timing issues, write to TIDV/RDTR again to ensure the |
bf03085f MV |
4060 | * write is successful |
4061 | */ | |
4062 | ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); | |
4063 | ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); | |
713b3c9e JB |
4064 | |
4065 | /* execute the writes immediately */ | |
4066 | e1e_flush(); | |
4067 | } | |
4068 | ||
67fd4fcb JK |
4069 | static void e1000e_update_stats(struct e1000_adapter *adapter); |
4070 | ||
28002099 DE |
4071 | /** |
4072 | * e1000e_down - quiesce the device and optionally reset the hardware | |
4073 | * @adapter: board private structure | |
4074 | * @reset: boolean flag to reset the hardware or not | |
4075 | */ | |
4076 | void e1000e_down(struct e1000_adapter *adapter, bool reset) | |
bc7f75fa AK |
4077 | { |
4078 | struct net_device *netdev = adapter->netdev; | |
4079 | struct e1000_hw *hw = &adapter->hw; | |
4080 | u32 tctl, rctl; | |
4081 | ||
e921eb1a | 4082 | /* signal that we're down so the interrupt handler does not |
ad68076e BA |
4083 | * reschedule our watchdog timer |
4084 | */ | |
bc7f75fa AK |
4085 | set_bit(__E1000_DOWN, &adapter->state); |
4086 | ||
4087 | /* disable receives in the hardware */ | |
4088 | rctl = er32(RCTL); | |
7f99ae63 BA |
4089 | if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
4090 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
bc7f75fa AK |
4091 | /* flush and sleep below */ |
4092 | ||
4cb9be7a | 4093 | netif_stop_queue(netdev); |
bc7f75fa AK |
4094 | |
4095 | /* disable transmits in the hardware */ | |
4096 | tctl = er32(TCTL); | |
4097 | tctl &= ~E1000_TCTL_EN; | |
4098 | ew32(TCTL, tctl); | |
7f99ae63 | 4099 | |
bc7f75fa AK |
4100 | /* flush both disables and wait for them to finish */ |
4101 | e1e_flush(); | |
1bba4386 | 4102 | usleep_range(10000, 20000); |
bc7f75fa | 4103 | |
bc7f75fa AK |
4104 | e1000_irq_disable(adapter); |
4105 | ||
a3b87a4c BA |
4106 | napi_synchronize(&adapter->napi); |
4107 | ||
bc7f75fa AK |
4108 | del_timer_sync(&adapter->watchdog_timer); |
4109 | del_timer_sync(&adapter->phy_info_timer); | |
4110 | ||
bc7f75fa | 4111 | netif_carrier_off(netdev); |
67fd4fcb JK |
4112 | |
4113 | spin_lock(&adapter->stats64_lock); | |
4114 | e1000e_update_stats(adapter); | |
4115 | spin_unlock(&adapter->stats64_lock); | |
4116 | ||
400484fa | 4117 | e1000e_flush_descriptors(adapter); |
55aa6985 BA |
4118 | e1000_clean_tx_ring(adapter->tx_ring); |
4119 | e1000_clean_rx_ring(adapter->rx_ring); | |
400484fa | 4120 | |
bc7f75fa AK |
4121 | adapter->link_speed = 0; |
4122 | adapter->link_duplex = 0; | |
4123 | ||
da1e2046 BA |
4124 | /* Disable Si errata workaround on PCHx for jumbo frame flow */ |
4125 | if ((hw->mac.type >= e1000_pch2lan) && | |
4126 | (adapter->netdev->mtu > ETH_DATA_LEN) && | |
4127 | e1000_lv_jumbo_workaround_ich8lan(hw, false)) | |
4128 | e_dbg("failed to disable jumbo frame workaround mode\n"); | |
4129 | ||
28002099 | 4130 | if (reset && !pci_channel_offline(adapter->pdev)) |
52cc3086 | 4131 | e1000e_reset(adapter); |
bc7f75fa AK |
4132 | } |
4133 | ||
4134 | void e1000e_reinit_locked(struct e1000_adapter *adapter) | |
4135 | { | |
4136 | might_sleep(); | |
4137 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
1bba4386 | 4138 | usleep_range(1000, 2000); |
28002099 | 4139 | e1000e_down(adapter, true); |
bc7f75fa AK |
4140 | e1000e_up(adapter); |
4141 | clear_bit(__E1000_RESETTING, &adapter->state); | |
4142 | } | |
4143 | ||
b67e1913 BA |
4144 | /** |
4145 | * e1000e_cyclecounter_read - read raw cycle counter (used by time counter) | |
4146 | * @cc: cyclecounter structure | |
4147 | **/ | |
4148 | static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc) | |
4149 | { | |
4150 | struct e1000_adapter *adapter = container_of(cc, struct e1000_adapter, | |
4151 | cc); | |
4152 | struct e1000_hw *hw = &adapter->hw; | |
5e7ff970 | 4153 | cycle_t systim, systim_next; |
b67e1913 BA |
4154 | |
4155 | /* latch SYSTIMH on read of SYSTIML */ | |
4156 | systim = (cycle_t)er32(SYSTIML); | |
4157 | systim |= (cycle_t)er32(SYSTIMH) << 32; | |
4158 | ||
5e7ff970 TF |
4159 | if ((hw->mac.type == e1000_82574) || (hw->mac.type == e1000_82583)) { |
4160 | u64 incvalue, time_delta, rem, temp; | |
4161 | int i; | |
4162 | ||
4163 | /* errata for 82574/82583 possible bad bits read from SYSTIMH/L | |
4164 | * check to see that the time is incrementing at a reasonable | |
4165 | * rate and is a multiple of incvalue | |
4166 | */ | |
4167 | incvalue = er32(TIMINCA) & E1000_TIMINCA_INCVALUE_MASK; | |
4168 | for (i = 0; i < E1000_MAX_82574_SYSTIM_REREADS; i++) { | |
4169 | /* latch SYSTIMH on read of SYSTIML */ | |
4170 | systim_next = (cycle_t)er32(SYSTIML); | |
4171 | systim_next |= (cycle_t)er32(SYSTIMH) << 32; | |
4172 | ||
4173 | time_delta = systim_next - systim; | |
4174 | temp = time_delta; | |
4175 | rem = do_div(temp, incvalue); | |
4176 | ||
4177 | systim = systim_next; | |
4178 | ||
4179 | if ((time_delta < E1000_82574_SYSTIM_EPSILON) && | |
4180 | (rem == 0)) | |
4181 | break; | |
4182 | } | |
4183 | } | |
b67e1913 BA |
4184 | return systim; |
4185 | } | |
4186 | ||
bc7f75fa AK |
4187 | /** |
4188 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
4189 | * @adapter: board private structure to initialize | |
4190 | * | |
4191 | * e1000_sw_init initializes the Adapter private data structure. | |
4192 | * Fields are initialized based on PCI device information and | |
4193 | * OS network device settings (MTU size). | |
4194 | **/ | |
9f9a12f8 | 4195 | static int e1000_sw_init(struct e1000_adapter *adapter) |
bc7f75fa | 4196 | { |
bc7f75fa AK |
4197 | struct net_device *netdev = adapter->netdev; |
4198 | ||
4199 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
4200 | adapter->rx_ps_bsize0 = 128; | |
318a94d6 JK |
4201 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
4202 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
55aa6985 BA |
4203 | adapter->tx_ring_count = E1000_DEFAULT_TXD; |
4204 | adapter->rx_ring_count = E1000_DEFAULT_RXD; | |
bc7f75fa | 4205 | |
67fd4fcb JK |
4206 | spin_lock_init(&adapter->stats64_lock); |
4207 | ||
4662e82b | 4208 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa | 4209 | |
4662e82b BA |
4210 | if (e1000_alloc_queues(adapter)) |
4211 | return -ENOMEM; | |
bc7f75fa | 4212 | |
b67e1913 BA |
4213 | /* Setup hardware time stamping cyclecounter */ |
4214 | if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { | |
4215 | adapter->cc.read = e1000e_cyclecounter_read; | |
4d045b4c | 4216 | adapter->cc.mask = CYCLECOUNTER_MASK(64); |
b67e1913 BA |
4217 | adapter->cc.mult = 1; |
4218 | /* cc.shift set in e1000e_get_base_tininca() */ | |
4219 | ||
4220 | spin_lock_init(&adapter->systim_lock); | |
4221 | INIT_WORK(&adapter->tx_hwtstamp_work, e1000e_tx_hwtstamp_work); | |
4222 | } | |
4223 | ||
bc7f75fa | 4224 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
bc7f75fa AK |
4225 | e1000_irq_disable(adapter); |
4226 | ||
bc7f75fa AK |
4227 | set_bit(__E1000_DOWN, &adapter->state); |
4228 | return 0; | |
bc7f75fa AK |
4229 | } |
4230 | ||
f8d59f78 BA |
4231 | /** |
4232 | * e1000_intr_msi_test - Interrupt Handler | |
4233 | * @irq: interrupt number | |
4234 | * @data: pointer to a network interface device structure | |
4235 | **/ | |
8bb62869 | 4236 | static irqreturn_t e1000_intr_msi_test(int __always_unused irq, void *data) |
f8d59f78 BA |
4237 | { |
4238 | struct net_device *netdev = data; | |
4239 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4240 | struct e1000_hw *hw = &adapter->hw; | |
4241 | u32 icr = er32(ICR); | |
4242 | ||
3bb99fe2 | 4243 | e_dbg("icr is %08X\n", icr); |
f8d59f78 BA |
4244 | if (icr & E1000_ICR_RXSEQ) { |
4245 | adapter->flags &= ~FLAG_MSI_TEST_FAILED; | |
e921eb1a | 4246 | /* Force memory writes to complete before acknowledging the |
bc76329d BA |
4247 | * interrupt is handled. |
4248 | */ | |
f8d59f78 BA |
4249 | wmb(); |
4250 | } | |
4251 | ||
4252 | return IRQ_HANDLED; | |
4253 | } | |
4254 | ||
4255 | /** | |
4256 | * e1000_test_msi_interrupt - Returns 0 for successful test | |
4257 | * @adapter: board private struct | |
4258 | * | |
4259 | * code flow taken from tg3.c | |
4260 | **/ | |
4261 | static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) | |
4262 | { | |
4263 | struct net_device *netdev = adapter->netdev; | |
4264 | struct e1000_hw *hw = &adapter->hw; | |
4265 | int err; | |
4266 | ||
4267 | /* poll_enable hasn't been called yet, so don't need disable */ | |
4268 | /* clear any pending events */ | |
4269 | er32(ICR); | |
4270 | ||
4271 | /* free the real vector and request a test handler */ | |
4272 | e1000_free_irq(adapter); | |
4662e82b | 4273 | e1000e_reset_interrupt_capability(adapter); |
f8d59f78 BA |
4274 | |
4275 | /* Assume that the test fails, if it succeeds then the test | |
e921eb1a BA |
4276 | * MSI irq handler will unset this flag |
4277 | */ | |
f8d59f78 BA |
4278 | adapter->flags |= FLAG_MSI_TEST_FAILED; |
4279 | ||
4280 | err = pci_enable_msi(adapter->pdev); | |
4281 | if (err) | |
4282 | goto msi_test_failed; | |
4283 | ||
a0607fd3 | 4284 | err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
f8d59f78 BA |
4285 | netdev->name, netdev); |
4286 | if (err) { | |
4287 | pci_disable_msi(adapter->pdev); | |
4288 | goto msi_test_failed; | |
4289 | } | |
4290 | ||
e921eb1a | 4291 | /* Force memory writes to complete before enabling and firing an |
bc76329d BA |
4292 | * interrupt. |
4293 | */ | |
f8d59f78 BA |
4294 | wmb(); |
4295 | ||
4296 | e1000_irq_enable(adapter); | |
4297 | ||
4298 | /* fire an unusual interrupt on the test handler */ | |
4299 | ew32(ICS, E1000_ICS_RXSEQ); | |
4300 | e1e_flush(); | |
569a3aff | 4301 | msleep(100); |
f8d59f78 BA |
4302 | |
4303 | e1000_irq_disable(adapter); | |
4304 | ||
bc76329d | 4305 | rmb(); /* read flags after interrupt has been fired */ |
f8d59f78 BA |
4306 | |
4307 | if (adapter->flags & FLAG_MSI_TEST_FAILED) { | |
4662e82b | 4308 | adapter->int_mode = E1000E_INT_MODE_LEGACY; |
068e8a30 | 4309 | e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
24b706b2 | 4310 | } else { |
068e8a30 | 4311 | e_dbg("MSI interrupt test succeeded!\n"); |
24b706b2 | 4312 | } |
f8d59f78 BA |
4313 | |
4314 | free_irq(adapter->pdev->irq, netdev); | |
4315 | pci_disable_msi(adapter->pdev); | |
4316 | ||
f8d59f78 | 4317 | msi_test_failed: |
4662e82b | 4318 | e1000e_set_interrupt_capability(adapter); |
068e8a30 | 4319 | return e1000_request_irq(adapter); |
f8d59f78 BA |
4320 | } |
4321 | ||
4322 | /** | |
4323 | * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored | |
4324 | * @adapter: board private struct | |
4325 | * | |
4326 | * code flow taken from tg3.c, called with e1000 interrupts disabled. | |
4327 | **/ | |
4328 | static int e1000_test_msi(struct e1000_adapter *adapter) | |
4329 | { | |
4330 | int err; | |
4331 | u16 pci_cmd; | |
4332 | ||
4333 | if (!(adapter->flags & FLAG_MSI_ENABLED)) | |
4334 | return 0; | |
4335 | ||
4336 | /* disable SERR in case the MSI write causes a master abort */ | |
4337 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
36f2407f DN |
4338 | if (pci_cmd & PCI_COMMAND_SERR) |
4339 | pci_write_config_word(adapter->pdev, PCI_COMMAND, | |
4340 | pci_cmd & ~PCI_COMMAND_SERR); | |
f8d59f78 BA |
4341 | |
4342 | err = e1000_test_msi_interrupt(adapter); | |
4343 | ||
36f2407f DN |
4344 | /* re-enable SERR */ |
4345 | if (pci_cmd & PCI_COMMAND_SERR) { | |
4346 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
4347 | pci_cmd |= PCI_COMMAND_SERR; | |
4348 | pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); | |
4349 | } | |
f8d59f78 | 4350 | |
f8d59f78 BA |
4351 | return err; |
4352 | } | |
4353 | ||
bc7f75fa AK |
4354 | /** |
4355 | * e1000_open - Called when a network interface is made active | |
4356 | * @netdev: network interface device structure | |
4357 | * | |
4358 | * Returns 0 on success, negative value on failure | |
4359 | * | |
4360 | * The open entry point is called when a network interface is made | |
4361 | * active by the system (IFF_UP). At this point all resources needed | |
4362 | * for transmit and receive operations are allocated, the interrupt | |
4363 | * handler is registered with the OS, the watchdog timer is started, | |
4364 | * and the stack is notified that the interface is ready. | |
4365 | **/ | |
4366 | static int e1000_open(struct net_device *netdev) | |
4367 | { | |
4368 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4369 | struct e1000_hw *hw = &adapter->hw; | |
23606cf5 | 4370 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa AK |
4371 | int err; |
4372 | ||
4373 | /* disallow open during test */ | |
4374 | if (test_bit(__E1000_TESTING, &adapter->state)) | |
4375 | return -EBUSY; | |
4376 | ||
23606cf5 RW |
4377 | pm_runtime_get_sync(&pdev->dev); |
4378 | ||
9c563d20 JB |
4379 | netif_carrier_off(netdev); |
4380 | ||
bc7f75fa | 4381 | /* allocate transmit descriptors */ |
55aa6985 | 4382 | err = e1000e_setup_tx_resources(adapter->tx_ring); |
bc7f75fa AK |
4383 | if (err) |
4384 | goto err_setup_tx; | |
4385 | ||
4386 | /* allocate receive descriptors */ | |
55aa6985 | 4387 | err = e1000e_setup_rx_resources(adapter->rx_ring); |
bc7f75fa AK |
4388 | if (err) |
4389 | goto err_setup_rx; | |
4390 | ||
e921eb1a | 4391 | /* If AMT is enabled, let the firmware know that the network |
11b08be8 BA |
4392 | * interface is now open and reset the part to a known state. |
4393 | */ | |
4394 | if (adapter->flags & FLAG_HAS_AMT) { | |
31dbe5b4 | 4395 | e1000e_get_hw_control(adapter); |
11b08be8 BA |
4396 | e1000e_reset(adapter); |
4397 | } | |
4398 | ||
bc7f75fa AK |
4399 | e1000e_power_up_phy(adapter); |
4400 | ||
4401 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
e5fe2541 | 4402 | if ((adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
bc7f75fa AK |
4403 | e1000_update_mng_vlan(adapter); |
4404 | ||
79d4e908 | 4405 | /* DMA latency requirement to workaround jumbo issue */ |
3e35d991 BA |
4406 | pm_qos_add_request(&adapter->netdev->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, |
4407 | PM_QOS_DEFAULT_VALUE); | |
c128ec29 | 4408 | |
e921eb1a | 4409 | /* before we allocate an interrupt, we must be ready to handle it. |
bc7f75fa AK |
4410 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
4411 | * as soon as we call pci_request_irq, so we have to setup our | |
ad68076e BA |
4412 | * clean_rx handler before we do so. |
4413 | */ | |
bc7f75fa AK |
4414 | e1000_configure(adapter); |
4415 | ||
4416 | err = e1000_request_irq(adapter); | |
4417 | if (err) | |
4418 | goto err_req_irq; | |
4419 | ||
e921eb1a | 4420 | /* Work around PCIe errata with MSI interrupts causing some chipsets to |
f8d59f78 BA |
4421 | * ignore e1000e MSI messages, which means we need to test our MSI |
4422 | * interrupt now | |
4423 | */ | |
4662e82b | 4424 | if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
f8d59f78 BA |
4425 | err = e1000_test_msi(adapter); |
4426 | if (err) { | |
4427 | e_err("Interrupt allocation failed\n"); | |
4428 | goto err_req_irq; | |
4429 | } | |
4430 | } | |
4431 | ||
bc7f75fa AK |
4432 | /* From here on the code is the same as e1000e_up() */ |
4433 | clear_bit(__E1000_DOWN, &adapter->state); | |
4434 | ||
4435 | napi_enable(&adapter->napi); | |
4436 | ||
4437 | e1000_irq_enable(adapter); | |
4438 | ||
09357b00 | 4439 | adapter->tx_hang_recheck = false; |
4cb9be7a | 4440 | netif_start_queue(netdev); |
d55b53ff | 4441 | |
66148bab | 4442 | hw->mac.get_link_status = true; |
23606cf5 RW |
4443 | pm_runtime_put(&pdev->dev); |
4444 | ||
bc7f75fa | 4445 | /* fire a link status change interrupt to start the watchdog */ |
52a9b231 BA |
4446 | if (adapter->msix_entries) |
4447 | ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); | |
4448 | else | |
4449 | ew32(ICS, E1000_ICS_LSC); | |
bc7f75fa AK |
4450 | |
4451 | return 0; | |
4452 | ||
4453 | err_req_irq: | |
31dbe5b4 | 4454 | e1000e_release_hw_control(adapter); |
bc7f75fa | 4455 | e1000_power_down_phy(adapter); |
55aa6985 | 4456 | e1000e_free_rx_resources(adapter->rx_ring); |
bc7f75fa | 4457 | err_setup_rx: |
55aa6985 | 4458 | e1000e_free_tx_resources(adapter->tx_ring); |
bc7f75fa AK |
4459 | err_setup_tx: |
4460 | e1000e_reset(adapter); | |
23606cf5 | 4461 | pm_runtime_put_sync(&pdev->dev); |
bc7f75fa AK |
4462 | |
4463 | return err; | |
4464 | } | |
4465 | ||
4466 | /** | |
4467 | * e1000_close - Disables a network interface | |
4468 | * @netdev: network interface device structure | |
4469 | * | |
4470 | * Returns 0, this is not allowed to fail | |
4471 | * | |
4472 | * The close entry point is called when an interface is de-activated | |
4473 | * by the OS. The hardware is still under the drivers control, but | |
4474 | * needs to be disabled. A global MAC reset is issued to stop the | |
4475 | * hardware, and all transmit and receive resources are freed. | |
4476 | **/ | |
4477 | static int e1000_close(struct net_device *netdev) | |
4478 | { | |
4479 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 | 4480 | struct pci_dev *pdev = adapter->pdev; |
bb9e44d0 BA |
4481 | int count = E1000_CHECK_RESET_COUNT; |
4482 | ||
4483 | while (test_bit(__E1000_RESETTING, &adapter->state) && count--) | |
4484 | usleep_range(10000, 20000); | |
bc7f75fa AK |
4485 | |
4486 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
23606cf5 RW |
4487 | |
4488 | pm_runtime_get_sync(&pdev->dev); | |
4489 | ||
4490 | if (!test_bit(__E1000_DOWN, &adapter->state)) { | |
28002099 | 4491 | e1000e_down(adapter, true); |
23606cf5 | 4492 | e1000_free_irq(adapter); |
63eb48f1 DE |
4493 | |
4494 | /* Link status message must follow this format */ | |
4495 | pr_info("%s NIC Link is Down\n", adapter->netdev->name); | |
23606cf5 | 4496 | } |
a3b87a4c BA |
4497 | |
4498 | napi_disable(&adapter->napi); | |
4499 | ||
55aa6985 BA |
4500 | e1000e_free_tx_resources(adapter->tx_ring); |
4501 | e1000e_free_rx_resources(adapter->rx_ring); | |
bc7f75fa | 4502 | |
e921eb1a | 4503 | /* kill manageability vlan ID if supported, but not if a vlan with |
ad68076e BA |
4504 | * the same ID is registered on the host OS (let 8021q kill it) |
4505 | */ | |
e5fe2541 | 4506 | if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) |
80d5c368 PM |
4507 | e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), |
4508 | adapter->mng_vlan_id); | |
bc7f75fa | 4509 | |
e921eb1a | 4510 | /* If AMT is enabled, let the firmware know that the network |
ad68076e BA |
4511 | * interface is now closed |
4512 | */ | |
31dbe5b4 BA |
4513 | if ((adapter->flags & FLAG_HAS_AMT) && |
4514 | !test_bit(__E1000_TESTING, &adapter->state)) | |
4515 | e1000e_release_hw_control(adapter); | |
bc7f75fa | 4516 | |
3e35d991 | 4517 | pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
c128ec29 | 4518 | |
23606cf5 RW |
4519 | pm_runtime_put_sync(&pdev->dev); |
4520 | ||
bc7f75fa AK |
4521 | return 0; |
4522 | } | |
fc830b78 | 4523 | |
bc7f75fa AK |
4524 | /** |
4525 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
4526 | * @netdev: network interface device structure | |
4527 | * @p: pointer to an address structure | |
4528 | * | |
4529 | * Returns 0 on success, negative on failure | |
4530 | **/ | |
4531 | static int e1000_set_mac(struct net_device *netdev, void *p) | |
4532 | { | |
4533 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
69e1e019 | 4534 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
4535 | struct sockaddr *addr = p; |
4536 | ||
4537 | if (!is_valid_ether_addr(addr->sa_data)) | |
4538 | return -EADDRNOTAVAIL; | |
4539 | ||
4540 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
4541 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
4542 | ||
69e1e019 | 4543 | hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
bc7f75fa AK |
4544 | |
4545 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { | |
4546 | /* activate the work around */ | |
4547 | e1000e_set_laa_state_82571(&adapter->hw, 1); | |
4548 | ||
e921eb1a | 4549 | /* Hold a copy of the LAA in RAR[14] This is done so that |
bc7f75fa AK |
4550 | * between the time RAR[0] gets clobbered and the time it |
4551 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
4552 | * of the RARs and no incoming packets directed to this port | |
4553 | * are dropped. Eventually the LAA will be in RAR[0] and | |
ad68076e BA |
4554 | * RAR[14] |
4555 | */ | |
69e1e019 BA |
4556 | hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, |
4557 | adapter->hw.mac.rar_entry_count - 1); | |
bc7f75fa AK |
4558 | } |
4559 | ||
4560 | return 0; | |
4561 | } | |
4562 | ||
a8f88ff5 JB |
4563 | /** |
4564 | * e1000e_update_phy_task - work thread to update phy | |
4565 | * @work: pointer to our work struct | |
4566 | * | |
4567 | * this worker thread exists because we must acquire a | |
4568 | * semaphore to read the phy, which we could msleep while | |
4569 | * waiting for it, and we can't msleep in a timer. | |
4570 | **/ | |
4571 | static void e1000e_update_phy_task(struct work_struct *work) | |
4572 | { | |
4573 | struct e1000_adapter *adapter = container_of(work, | |
17e813ec BA |
4574 | struct e1000_adapter, |
4575 | update_phy_task); | |
a03206ed | 4576 | struct e1000_hw *hw = &adapter->hw; |
615b32af JB |
4577 | |
4578 | if (test_bit(__E1000_DOWN, &adapter->state)) | |
4579 | return; | |
4580 | ||
a03206ed DE |
4581 | e1000_get_phy_info(hw); |
4582 | ||
4583 | /* Enable EEE on 82579 after link up */ | |
50844bb7 | 4584 | if (hw->phy.type >= e1000_phy_82579) |
a03206ed | 4585 | e1000_set_eee_pchlan(hw); |
a8f88ff5 JB |
4586 | } |
4587 | ||
e921eb1a BA |
4588 | /** |
4589 | * e1000_update_phy_info - timre call-back to update PHY info | |
4590 | * @data: pointer to adapter cast into an unsigned long | |
4591 | * | |
ad68076e BA |
4592 | * Need to wait a few seconds after link up to get diagnostic information from |
4593 | * the phy | |
e921eb1a | 4594 | **/ |
bc7f75fa AK |
4595 | static void e1000_update_phy_info(unsigned long data) |
4596 | { | |
53aa82da | 4597 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
615b32af JB |
4598 | |
4599 | if (test_bit(__E1000_DOWN, &adapter->state)) | |
4600 | return; | |
4601 | ||
a8f88ff5 | 4602 | schedule_work(&adapter->update_phy_task); |
bc7f75fa AK |
4603 | } |
4604 | ||
8c7bbb92 BA |
4605 | /** |
4606 | * e1000e_update_phy_stats - Update the PHY statistics counters | |
4607 | * @adapter: board private structure | |
2b6b168d BA |
4608 | * |
4609 | * Read/clear the upper 16-bit PHY registers and read/accumulate lower | |
8c7bbb92 BA |
4610 | **/ |
4611 | static void e1000e_update_phy_stats(struct e1000_adapter *adapter) | |
4612 | { | |
4613 | struct e1000_hw *hw = &adapter->hw; | |
4614 | s32 ret_val; | |
4615 | u16 phy_data; | |
4616 | ||
4617 | ret_val = hw->phy.ops.acquire(hw); | |
4618 | if (ret_val) | |
4619 | return; | |
4620 | ||
e921eb1a | 4621 | /* A page set is expensive so check if already on desired page. |
8c7bbb92 BA |
4622 | * If not, set to the page with the PHY status registers. |
4623 | */ | |
2b6b168d | 4624 | hw->phy.addr = 1; |
8c7bbb92 BA |
4625 | ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
4626 | &phy_data); | |
4627 | if (ret_val) | |
4628 | goto release; | |
2b6b168d BA |
4629 | if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) { |
4630 | ret_val = hw->phy.ops.set_page(hw, | |
4631 | HV_STATS_PAGE << IGP_PAGE_SHIFT); | |
8c7bbb92 BA |
4632 | if (ret_val) |
4633 | goto release; | |
4634 | } | |
4635 | ||
8c7bbb92 | 4636 | /* Single Collision Count */ |
2b6b168d BA |
4637 | hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data); |
4638 | ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data); | |
8c7bbb92 BA |
4639 | if (!ret_val) |
4640 | adapter->stats.scc += phy_data; | |
4641 | ||
4642 | /* Excessive Collision Count */ | |
2b6b168d BA |
4643 | hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data); |
4644 | ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data); | |
8c7bbb92 BA |
4645 | if (!ret_val) |
4646 | adapter->stats.ecol += phy_data; | |
4647 | ||
4648 | /* Multiple Collision Count */ | |
2b6b168d BA |
4649 | hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data); |
4650 | ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data); | |
8c7bbb92 BA |
4651 | if (!ret_val) |
4652 | adapter->stats.mcc += phy_data; | |
4653 | ||
4654 | /* Late Collision Count */ | |
2b6b168d BA |
4655 | hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data); |
4656 | ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data); | |
8c7bbb92 BA |
4657 | if (!ret_val) |
4658 | adapter->stats.latecol += phy_data; | |
4659 | ||
4660 | /* Collision Count - also used for adaptive IFS */ | |
2b6b168d BA |
4661 | hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data); |
4662 | ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data); | |
8c7bbb92 BA |
4663 | if (!ret_val) |
4664 | hw->mac.collision_delta = phy_data; | |
4665 | ||
4666 | /* Defer Count */ | |
2b6b168d BA |
4667 | hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data); |
4668 | ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data); | |
8c7bbb92 BA |
4669 | if (!ret_val) |
4670 | adapter->stats.dc += phy_data; | |
4671 | ||
4672 | /* Transmit with no CRS */ | |
2b6b168d BA |
4673 | hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data); |
4674 | ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data); | |
8c7bbb92 BA |
4675 | if (!ret_val) |
4676 | adapter->stats.tncrs += phy_data; | |
4677 | ||
4678 | release: | |
4679 | hw->phy.ops.release(hw); | |
4680 | } | |
4681 | ||
bc7f75fa AK |
4682 | /** |
4683 | * e1000e_update_stats - Update the board statistics counters | |
4684 | * @adapter: board private structure | |
4685 | **/ | |
67fd4fcb | 4686 | static void e1000e_update_stats(struct e1000_adapter *adapter) |
bc7f75fa | 4687 | { |
7274c20f | 4688 | struct net_device *netdev = adapter->netdev; |
bc7f75fa AK |
4689 | struct e1000_hw *hw = &adapter->hw; |
4690 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa | 4691 | |
e921eb1a | 4692 | /* Prevent stats update while adapter is being reset, or if the pci |
bc7f75fa AK |
4693 | * connection is down. |
4694 | */ | |
4695 | if (adapter->link_speed == 0) | |
4696 | return; | |
4697 | if (pci_channel_offline(pdev)) | |
4698 | return; | |
4699 | ||
bc7f75fa AK |
4700 | adapter->stats.crcerrs += er32(CRCERRS); |
4701 | adapter->stats.gprc += er32(GPRC); | |
7c25769f | 4702 | adapter->stats.gorc += er32(GORCL); |
e80bd1d1 | 4703 | er32(GORCH); /* Clear gorc */ |
bc7f75fa AK |
4704 | adapter->stats.bprc += er32(BPRC); |
4705 | adapter->stats.mprc += er32(MPRC); | |
4706 | adapter->stats.roc += er32(ROC); | |
4707 | ||
bc7f75fa | 4708 | adapter->stats.mpc += er32(MPC); |
8c7bbb92 BA |
4709 | |
4710 | /* Half-duplex statistics */ | |
4711 | if (adapter->link_duplex == HALF_DUPLEX) { | |
4712 | if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { | |
4713 | e1000e_update_phy_stats(adapter); | |
4714 | } else { | |
4715 | adapter->stats.scc += er32(SCC); | |
4716 | adapter->stats.ecol += er32(ECOL); | |
4717 | adapter->stats.mcc += er32(MCC); | |
4718 | adapter->stats.latecol += er32(LATECOL); | |
4719 | adapter->stats.dc += er32(DC); | |
4720 | ||
4721 | hw->mac.collision_delta = er32(COLC); | |
4722 | ||
4723 | if ((hw->mac.type != e1000_82574) && | |
4724 | (hw->mac.type != e1000_82583)) | |
4725 | adapter->stats.tncrs += er32(TNCRS); | |
4726 | } | |
4727 | adapter->stats.colc += hw->mac.collision_delta; | |
a4f58f54 | 4728 | } |
8c7bbb92 | 4729 | |
bc7f75fa AK |
4730 | adapter->stats.xonrxc += er32(XONRXC); |
4731 | adapter->stats.xontxc += er32(XONTXC); | |
4732 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
4733 | adapter->stats.xofftxc += er32(XOFFTXC); | |
bc7f75fa | 4734 | adapter->stats.gptc += er32(GPTC); |
7c25769f | 4735 | adapter->stats.gotc += er32(GOTCL); |
e80bd1d1 | 4736 | er32(GOTCH); /* Clear gotc */ |
bc7f75fa AK |
4737 | adapter->stats.rnbc += er32(RNBC); |
4738 | adapter->stats.ruc += er32(RUC); | |
bc7f75fa AK |
4739 | |
4740 | adapter->stats.mptc += er32(MPTC); | |
4741 | adapter->stats.bptc += er32(BPTC); | |
4742 | ||
4743 | /* used for adaptive IFS */ | |
4744 | ||
4745 | hw->mac.tx_packet_delta = er32(TPT); | |
4746 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
bc7f75fa AK |
4747 | |
4748 | adapter->stats.algnerrc += er32(ALGNERRC); | |
4749 | adapter->stats.rxerrc += er32(RXERRC); | |
bc7f75fa AK |
4750 | adapter->stats.cexterr += er32(CEXTERR); |
4751 | adapter->stats.tsctc += er32(TSCTC); | |
4752 | adapter->stats.tsctfc += er32(TSCTFC); | |
4753 | ||
bc7f75fa | 4754 | /* Fill out the OS statistics structure */ |
7274c20f AK |
4755 | netdev->stats.multicast = adapter->stats.mprc; |
4756 | netdev->stats.collisions = adapter->stats.colc; | |
bc7f75fa AK |
4757 | |
4758 | /* Rx Errors */ | |
4759 | ||
e921eb1a | 4760 | /* RLEC on some newer hardware can be incorrect so build |
ad68076e BA |
4761 | * our own version based on RUC and ROC |
4762 | */ | |
7274c20f | 4763 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
f0ff4398 BA |
4764 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
4765 | adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr; | |
7274c20f | 4766 | netdev->stats.rx_length_errors = adapter->stats.ruc + |
f0ff4398 | 4767 | adapter->stats.roc; |
7274c20f AK |
4768 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
4769 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
4770 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
bc7f75fa AK |
4771 | |
4772 | /* Tx Errors */ | |
f0ff4398 | 4773 | netdev->stats.tx_errors = adapter->stats.ecol + adapter->stats.latecol; |
7274c20f AK |
4774 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
4775 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
4776 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
bc7f75fa AK |
4777 | |
4778 | /* Tx Dropped needs to be maintained elsewhere */ | |
4779 | ||
bc7f75fa AK |
4780 | /* Management Stats */ |
4781 | adapter->stats.mgptc += er32(MGTPTC); | |
4782 | adapter->stats.mgprc += er32(MGTPRC); | |
4783 | adapter->stats.mgpdc += er32(MGTPDC); | |
94fb848b BA |
4784 | |
4785 | /* Correctable ECC Errors */ | |
79849ebc DE |
4786 | if ((hw->mac.type == e1000_pch_lpt) || |
4787 | (hw->mac.type == e1000_pch_spt)) { | |
94fb848b | 4788 | u32 pbeccsts = er32(PBECCSTS); |
6cf08d1c | 4789 | |
94fb848b BA |
4790 | adapter->corr_errors += |
4791 | pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; | |
4792 | adapter->uncorr_errors += | |
4793 | (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> | |
4794 | E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; | |
4795 | } | |
bc7f75fa AK |
4796 | } |
4797 | ||
7c25769f BA |
4798 | /** |
4799 | * e1000_phy_read_status - Update the PHY register status snapshot | |
4800 | * @adapter: board private structure | |
4801 | **/ | |
4802 | static void e1000_phy_read_status(struct e1000_adapter *adapter) | |
4803 | { | |
4804 | struct e1000_hw *hw = &adapter->hw; | |
4805 | struct e1000_phy_regs *phy = &adapter->phy_regs; | |
7c25769f | 4806 | |
97390ab8 BA |
4807 | if (!pm_runtime_suspended((&adapter->pdev->dev)->parent) && |
4808 | (er32(STATUS) & E1000_STATUS_LU) && | |
7c25769f | 4809 | (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
90da0669 BA |
4810 | int ret_val; |
4811 | ||
c2ade1a4 BA |
4812 | ret_val = e1e_rphy(hw, MII_BMCR, &phy->bmcr); |
4813 | ret_val |= e1e_rphy(hw, MII_BMSR, &phy->bmsr); | |
4814 | ret_val |= e1e_rphy(hw, MII_ADVERTISE, &phy->advertise); | |
4815 | ret_val |= e1e_rphy(hw, MII_LPA, &phy->lpa); | |
4816 | ret_val |= e1e_rphy(hw, MII_EXPANSION, &phy->expansion); | |
4817 | ret_val |= e1e_rphy(hw, MII_CTRL1000, &phy->ctrl1000); | |
4818 | ret_val |= e1e_rphy(hw, MII_STAT1000, &phy->stat1000); | |
4819 | ret_val |= e1e_rphy(hw, MII_ESTATUS, &phy->estatus); | |
7c25769f | 4820 | if (ret_val) |
44defeb3 | 4821 | e_warn("Error reading PHY register\n"); |
7c25769f | 4822 | } else { |
e921eb1a | 4823 | /* Do not read PHY registers if link is not up |
7c25769f BA |
4824 | * Set values to typical power-on defaults |
4825 | */ | |
4826 | phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); | |
4827 | phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | | |
4828 | BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | | |
4829 | BMSR_ERCAP); | |
4830 | phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | | |
4831 | ADVERTISE_ALL | ADVERTISE_CSMA); | |
4832 | phy->lpa = 0; | |
4833 | phy->expansion = EXPANSION_ENABLENPAGE; | |
4834 | phy->ctrl1000 = ADVERTISE_1000FULL; | |
4835 | phy->stat1000 = 0; | |
4836 | phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); | |
4837 | } | |
7c25769f BA |
4838 | } |
4839 | ||
bc7f75fa AK |
4840 | static void e1000_print_link_info(struct e1000_adapter *adapter) |
4841 | { | |
bc7f75fa AK |
4842 | struct e1000_hw *hw = &adapter->hw; |
4843 | u32 ctrl = er32(CTRL); | |
4844 | ||
8f12fe86 | 4845 | /* Link status message must follow this format for user tools */ |
7dbc1672 BA |
4846 | pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", |
4847 | adapter->netdev->name, adapter->link_speed, | |
ef456f85 JK |
4848 | adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half", |
4849 | (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" : | |
4850 | (ctrl & E1000_CTRL_RFCE) ? "Rx" : | |
4851 | (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None"); | |
bc7f75fa AK |
4852 | } |
4853 | ||
0c6bdb30 | 4854 | static bool e1000e_has_link(struct e1000_adapter *adapter) |
318a94d6 JK |
4855 | { |
4856 | struct e1000_hw *hw = &adapter->hw; | |
3db1cd5c | 4857 | bool link_active = false; |
318a94d6 JK |
4858 | s32 ret_val = 0; |
4859 | ||
e921eb1a | 4860 | /* get_link_status is set on LSC (link status) interrupt or |
318a94d6 JK |
4861 | * Rx sequence error interrupt. get_link_status will stay |
4862 | * false until the check_for_link establishes link | |
4863 | * for copper adapters ONLY | |
4864 | */ | |
4865 | switch (hw->phy.media_type) { | |
4866 | case e1000_media_type_copper: | |
4867 | if (hw->mac.get_link_status) { | |
4868 | ret_val = hw->mac.ops.check_for_link(hw); | |
4869 | link_active = !hw->mac.get_link_status; | |
4870 | } else { | |
3db1cd5c | 4871 | link_active = true; |
318a94d6 JK |
4872 | } |
4873 | break; | |
4874 | case e1000_media_type_fiber: | |
4875 | ret_val = hw->mac.ops.check_for_link(hw); | |
4876 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); | |
4877 | break; | |
4878 | case e1000_media_type_internal_serdes: | |
4879 | ret_val = hw->mac.ops.check_for_link(hw); | |
4880 | link_active = adapter->hw.mac.serdes_has_link; | |
4881 | break; | |
4882 | default: | |
4883 | case e1000_media_type_unknown: | |
4884 | break; | |
4885 | } | |
4886 | ||
4887 | if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && | |
4888 | (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
4889 | /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ | |
44defeb3 | 4890 | e_info("Gigabit has been disabled, downgrading speed\n"); |
318a94d6 JK |
4891 | } |
4892 | ||
4893 | return link_active; | |
4894 | } | |
4895 | ||
4896 | static void e1000e_enable_receives(struct e1000_adapter *adapter) | |
4897 | { | |
4898 | /* make sure the receive unit is started */ | |
4899 | if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && | |
12d43f7d | 4900 | (adapter->flags & FLAG_RESTART_NOW)) { |
318a94d6 JK |
4901 | struct e1000_hw *hw = &adapter->hw; |
4902 | u32 rctl = er32(RCTL); | |
6cf08d1c | 4903 | |
318a94d6 | 4904 | ew32(RCTL, rctl | E1000_RCTL_EN); |
12d43f7d | 4905 | adapter->flags &= ~FLAG_RESTART_NOW; |
318a94d6 JK |
4906 | } |
4907 | } | |
4908 | ||
ff10e13c CW |
4909 | static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
4910 | { | |
4911 | struct e1000_hw *hw = &adapter->hw; | |
4912 | ||
e921eb1a | 4913 | /* With 82574 controllers, PHY needs to be checked periodically |
ff10e13c CW |
4914 | * for hung state and reset, if two calls return true |
4915 | */ | |
4916 | if (e1000_check_phy_82574(hw)) | |
4917 | adapter->phy_hang_count++; | |
4918 | else | |
4919 | adapter->phy_hang_count = 0; | |
4920 | ||
4921 | if (adapter->phy_hang_count > 1) { | |
4922 | adapter->phy_hang_count = 0; | |
d9554e96 | 4923 | e_dbg("PHY appears hung - resetting\n"); |
ff10e13c CW |
4924 | schedule_work(&adapter->reset_task); |
4925 | } | |
4926 | } | |
4927 | ||
bc7f75fa AK |
4928 | /** |
4929 | * e1000_watchdog - Timer Call-back | |
4930 | * @data: pointer to adapter cast into an unsigned long | |
4931 | **/ | |
4932 | static void e1000_watchdog(unsigned long data) | |
4933 | { | |
53aa82da | 4934 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
bc7f75fa AK |
4935 | |
4936 | /* Do the rest outside of interrupt context */ | |
4937 | schedule_work(&adapter->watchdog_task); | |
4938 | ||
4939 | /* TODO: make this use queue_delayed_work() */ | |
4940 | } | |
4941 | ||
4942 | static void e1000_watchdog_task(struct work_struct *work) | |
4943 | { | |
4944 | struct e1000_adapter *adapter = container_of(work, | |
17e813ec BA |
4945 | struct e1000_adapter, |
4946 | watchdog_task); | |
bc7f75fa AK |
4947 | struct net_device *netdev = adapter->netdev; |
4948 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
75eb0fad | 4949 | struct e1000_phy_info *phy = &adapter->hw.phy; |
bc7f75fa AK |
4950 | struct e1000_ring *tx_ring = adapter->tx_ring; |
4951 | struct e1000_hw *hw = &adapter->hw; | |
4952 | u32 link, tctl; | |
bc7f75fa | 4953 | |
615b32af JB |
4954 | if (test_bit(__E1000_DOWN, &adapter->state)) |
4955 | return; | |
4956 | ||
b405e8df | 4957 | link = e1000e_has_link(adapter); |
318a94d6 | 4958 | if ((netif_carrier_ok(netdev)) && link) { |
23606cf5 RW |
4959 | /* Cancel scheduled suspend requests. */ |
4960 | pm_runtime_resume(netdev->dev.parent); | |
4961 | ||
318a94d6 | 4962 | e1000e_enable_receives(adapter); |
bc7f75fa | 4963 | goto link_up; |
bc7f75fa AK |
4964 | } |
4965 | ||
4966 | if ((e1000e_enable_tx_pkt_filtering(hw)) && | |
4967 | (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) | |
4968 | e1000_update_mng_vlan(adapter); | |
4969 | ||
bc7f75fa AK |
4970 | if (link) { |
4971 | if (!netif_carrier_ok(netdev)) { | |
3db1cd5c | 4972 | bool txb2b = true; |
23606cf5 RW |
4973 | |
4974 | /* Cancel scheduled suspend requests. */ | |
4975 | pm_runtime_resume(netdev->dev.parent); | |
4976 | ||
318a94d6 | 4977 | /* update snapshot of PHY registers on LSC */ |
7c25769f | 4978 | e1000_phy_read_status(adapter); |
bc7f75fa | 4979 | mac->ops.get_link_up_info(&adapter->hw, |
17e813ec BA |
4980 | &adapter->link_speed, |
4981 | &adapter->link_duplex); | |
bc7f75fa | 4982 | e1000_print_link_info(adapter); |
e792cd91 KS |
4983 | |
4984 | /* check if SmartSpeed worked */ | |
4985 | e1000e_check_downshift(hw); | |
4986 | if (phy->speed_downgraded) | |
4987 | netdev_warn(netdev, | |
4988 | "Link Speed was downgraded by SmartSpeed\n"); | |
4989 | ||
e921eb1a | 4990 | /* On supported PHYs, check for duplex mismatch only |
f4187b56 BA |
4991 | * if link has autonegotiated at 10/100 half |
4992 | */ | |
4993 | if ((hw->phy.type == e1000_phy_igp_3 || | |
4994 | hw->phy.type == e1000_phy_bm) && | |
138953bb | 4995 | hw->mac.autoneg && |
f4187b56 BA |
4996 | (adapter->link_speed == SPEED_10 || |
4997 | adapter->link_speed == SPEED_100) && | |
4998 | (adapter->link_duplex == HALF_DUPLEX)) { | |
4999 | u16 autoneg_exp; | |
5000 | ||
c2ade1a4 | 5001 | e1e_rphy(hw, MII_EXPANSION, &autoneg_exp); |
f4187b56 | 5002 | |
c2ade1a4 | 5003 | if (!(autoneg_exp & EXPANSION_NWAY)) |
ef456f85 | 5004 | e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n"); |
f4187b56 BA |
5005 | } |
5006 | ||
f49c57e1 | 5007 | /* adjust timeout factor according to speed/duplex */ |
bc7f75fa AK |
5008 | adapter->tx_timeout_factor = 1; |
5009 | switch (adapter->link_speed) { | |
5010 | case SPEED_10: | |
3db1cd5c | 5011 | txb2b = false; |
10f1b492 | 5012 | adapter->tx_timeout_factor = 16; |
bc7f75fa AK |
5013 | break; |
5014 | case SPEED_100: | |
3db1cd5c | 5015 | txb2b = false; |
4c86e0b9 | 5016 | adapter->tx_timeout_factor = 10; |
bc7f75fa AK |
5017 | break; |
5018 | } | |
5019 | ||
e921eb1a | 5020 | /* workaround: re-program speed mode bit after |
ad68076e BA |
5021 | * link-up event |
5022 | */ | |
bc7f75fa AK |
5023 | if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
5024 | !txb2b) { | |
5025 | u32 tarc0; | |
6cf08d1c | 5026 | |
e9ec2c0f | 5027 | tarc0 = er32(TARC(0)); |
bc7f75fa | 5028 | tarc0 &= ~SPEED_MODE_BIT; |
e9ec2c0f | 5029 | ew32(TARC(0), tarc0); |
bc7f75fa AK |
5030 | } |
5031 | ||
e921eb1a | 5032 | /* disable TSO for pcie and 10/100 speeds, to avoid |
ad68076e BA |
5033 | * some hardware issues |
5034 | */ | |
bc7f75fa AK |
5035 | if (!(adapter->flags & FLAG_TSO_FORCE)) { |
5036 | switch (adapter->link_speed) { | |
5037 | case SPEED_10: | |
5038 | case SPEED_100: | |
44defeb3 | 5039 | e_info("10/100 speed: disabling TSO\n"); |
bc7f75fa AK |
5040 | netdev->features &= ~NETIF_F_TSO; |
5041 | netdev->features &= ~NETIF_F_TSO6; | |
5042 | break; | |
5043 | case SPEED_1000: | |
5044 | netdev->features |= NETIF_F_TSO; | |
5045 | netdev->features |= NETIF_F_TSO6; | |
5046 | break; | |
5047 | default: | |
5048 | /* oops */ | |
5049 | break; | |
5050 | } | |
5051 | } | |
5052 | ||
e921eb1a | 5053 | /* enable transmits in the hardware, need to do this |
ad68076e BA |
5054 | * after setting TARC(0) |
5055 | */ | |
bc7f75fa AK |
5056 | tctl = er32(TCTL); |
5057 | tctl |= E1000_TCTL_EN; | |
5058 | ew32(TCTL, tctl); | |
5059 | ||
e921eb1a | 5060 | /* Perform any post-link-up configuration before |
75eb0fad BA |
5061 | * reporting link up. |
5062 | */ | |
5063 | if (phy->ops.cfg_on_link_up) | |
5064 | phy->ops.cfg_on_link_up(hw); | |
5065 | ||
bc7f75fa | 5066 | netif_carrier_on(netdev); |
bc7f75fa AK |
5067 | |
5068 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
5069 | mod_timer(&adapter->phy_info_timer, | |
5070 | round_jiffies(jiffies + 2 * HZ)); | |
bc7f75fa AK |
5071 | } |
5072 | } else { | |
5073 | if (netif_carrier_ok(netdev)) { | |
5074 | adapter->link_speed = 0; | |
5075 | adapter->link_duplex = 0; | |
8f12fe86 | 5076 | /* Link status message must follow this format */ |
7dbc1672 | 5077 | pr_info("%s NIC Link is Down\n", adapter->netdev->name); |
bc7f75fa | 5078 | netif_carrier_off(netdev); |
bc7f75fa AK |
5079 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
5080 | mod_timer(&adapter->phy_info_timer, | |
5081 | round_jiffies(jiffies + 2 * HZ)); | |
5082 | ||
d9554e96 DE |
5083 | /* 8000ES2LAN requires a Rx packet buffer work-around |
5084 | * on link down event; reset the controller to flush | |
5085 | * the Rx packet buffer. | |
12d43f7d | 5086 | */ |
d9554e96 | 5087 | if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
12d43f7d | 5088 | adapter->flags |= FLAG_RESTART_NOW; |
23606cf5 RW |
5089 | else |
5090 | pm_schedule_suspend(netdev->dev.parent, | |
17e813ec | 5091 | LINK_TIMEOUT); |
bc7f75fa AK |
5092 | } |
5093 | } | |
5094 | ||
5095 | link_up: | |
67fd4fcb | 5096 | spin_lock(&adapter->stats64_lock); |
bc7f75fa AK |
5097 | e1000e_update_stats(adapter); |
5098 | ||
5099 | mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
5100 | adapter->tpt_old = adapter->stats.tpt; | |
5101 | mac->collision_delta = adapter->stats.colc - adapter->colc_old; | |
5102 | adapter->colc_old = adapter->stats.colc; | |
5103 | ||
7c25769f BA |
5104 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
5105 | adapter->gorc_old = adapter->stats.gorc; | |
5106 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; | |
5107 | adapter->gotc_old = adapter->stats.gotc; | |
2084b114 | 5108 | spin_unlock(&adapter->stats64_lock); |
bc7f75fa | 5109 | |
d9554e96 DE |
5110 | /* If the link is lost the controller stops DMA, but |
5111 | * if there is queued Tx work it cannot be done. So | |
5112 | * reset the controller to flush the Tx packet buffers. | |
5113 | */ | |
5114 | if (!netif_carrier_ok(netdev) && | |
5115 | (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) | |
5116 | adapter->flags |= FLAG_RESTART_NOW; | |
5117 | ||
5118 | /* If reset is necessary, do it outside of interrupt context. */ | |
12d43f7d | 5119 | if (adapter->flags & FLAG_RESTART_NOW) { |
90da0669 BA |
5120 | schedule_work(&adapter->reset_task); |
5121 | /* return immediately since reset is imminent */ | |
5122 | return; | |
bc7f75fa AK |
5123 | } |
5124 | ||
12d43f7d BA |
5125 | e1000e_update_adaptive(&adapter->hw); |
5126 | ||
eab2abf5 JB |
5127 | /* Simple mode for Interrupt Throttle Rate (ITR) */ |
5128 | if (adapter->itr_setting == 4) { | |
e921eb1a | 5129 | /* Symmetric Tx/Rx gets a reduced ITR=2000; |
eab2abf5 JB |
5130 | * Total asymmetrical Tx or Rx gets ITR=8000; |
5131 | * everyone else is between 2000-8000. | |
5132 | */ | |
5133 | u32 goc = (adapter->gotc + adapter->gorc) / 10000; | |
5134 | u32 dif = (adapter->gotc > adapter->gorc ? | |
17e813ec BA |
5135 | adapter->gotc - adapter->gorc : |
5136 | adapter->gorc - adapter->gotc) / 10000; | |
eab2abf5 JB |
5137 | u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
5138 | ||
22a4cca2 | 5139 | e1000e_write_itr(adapter, itr); |
eab2abf5 JB |
5140 | } |
5141 | ||
ad68076e | 5142 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
4662e82b BA |
5143 | if (adapter->msix_entries) |
5144 | ew32(ICS, adapter->rx_ring->ims_val); | |
5145 | else | |
5146 | ew32(ICS, E1000_ICS_RXDMT0); | |
bc7f75fa | 5147 | |
713b3c9e JB |
5148 | /* flush pending descriptors to memory before detecting Tx hang */ |
5149 | e1000e_flush_descriptors(adapter); | |
5150 | ||
bc7f75fa | 5151 | /* Force detection of hung controller every watchdog period */ |
3db1cd5c | 5152 | adapter->detect_tx_hung = true; |
bc7f75fa | 5153 | |
e921eb1a | 5154 | /* With 82571 controllers, LAA may be overwritten due to controller |
ad68076e BA |
5155 | * reset from the other port. Set the appropriate LAA in RAR[0] |
5156 | */ | |
bc7f75fa | 5157 | if (e1000e_get_laa_state_82571(hw)) |
69e1e019 | 5158 | hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0); |
bc7f75fa | 5159 | |
ff10e13c CW |
5160 | if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
5161 | e1000e_check_82574_phy_workaround(adapter); | |
5162 | ||
b67e1913 BA |
5163 | /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */ |
5164 | if (adapter->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE) { | |
5165 | if ((adapter->flags2 & FLAG2_CHECK_RX_HWTSTAMP) && | |
5166 | (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) { | |
5167 | er32(RXSTMPH); | |
5168 | adapter->rx_hwtstamp_cleared++; | |
5169 | } else { | |
5170 | adapter->flags2 |= FLAG2_CHECK_RX_HWTSTAMP; | |
5171 | } | |
5172 | } | |
5173 | ||
bc7f75fa AK |
5174 | /* Reset the timer */ |
5175 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
5176 | mod_timer(&adapter->watchdog_timer, | |
5177 | round_jiffies(jiffies + 2 * HZ)); | |
5178 | } | |
5179 | ||
5180 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
5181 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
5182 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
5183 | #define E1000_TX_FLAGS_IPV4 0x00000008 | |
943146de | 5184 | #define E1000_TX_FLAGS_NO_FCS 0x00000010 |
b67e1913 | 5185 | #define E1000_TX_FLAGS_HWTSTAMP 0x00000020 |
bc7f75fa AK |
5186 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
5187 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
5188 | ||
47ccd1ed VY |
5189 | static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb, |
5190 | __be16 protocol) | |
bc7f75fa | 5191 | { |
bc7f75fa AK |
5192 | struct e1000_context_desc *context_desc; |
5193 | struct e1000_buffer *buffer_info; | |
5194 | unsigned int i; | |
5195 | u32 cmd_length = 0; | |
70443ae9 | 5196 | u16 ipcse = 0, mss; |
bc7f75fa | 5197 | u8 ipcss, ipcso, tucss, tucso, hdr_len; |
bcf1f57f | 5198 | int err; |
bc7f75fa | 5199 | |
3d5e33c9 BA |
5200 | if (!skb_is_gso(skb)) |
5201 | return 0; | |
bc7f75fa | 5202 | |
bcf1f57f FR |
5203 | err = skb_cow_head(skb, 0); |
5204 | if (err < 0) | |
5205 | return err; | |
bc7f75fa | 5206 | |
3d5e33c9 BA |
5207 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
5208 | mss = skb_shinfo(skb)->gso_size; | |
47ccd1ed | 5209 | if (protocol == htons(ETH_P_IP)) { |
3d5e33c9 BA |
5210 | struct iphdr *iph = ip_hdr(skb); |
5211 | iph->tot_len = 0; | |
5212 | iph->check = 0; | |
5213 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, | |
f0ff4398 | 5214 | 0, IPPROTO_TCP, 0); |
3d5e33c9 BA |
5215 | cmd_length = E1000_TXD_CMD_IP; |
5216 | ipcse = skb_transport_offset(skb) - 1; | |
8e1e8a47 | 5217 | } else if (skb_is_gso_v6(skb)) { |
3d5e33c9 BA |
5218 | ipv6_hdr(skb)->payload_len = 0; |
5219 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
f0ff4398 BA |
5220 | &ipv6_hdr(skb)->daddr, |
5221 | 0, IPPROTO_TCP, 0); | |
3d5e33c9 BA |
5222 | ipcse = 0; |
5223 | } | |
5224 | ipcss = skb_network_offset(skb); | |
5225 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; | |
5226 | tucss = skb_transport_offset(skb); | |
5227 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; | |
3d5e33c9 BA |
5228 | |
5229 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
f0ff4398 | 5230 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
3d5e33c9 BA |
5231 | |
5232 | i = tx_ring->next_to_use; | |
5233 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
5234 | buffer_info = &tx_ring->buffer_info[i]; | |
5235 | ||
e80bd1d1 BA |
5236 | context_desc->lower_setup.ip_fields.ipcss = ipcss; |
5237 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
5238 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
3d5e33c9 BA |
5239 | context_desc->upper_setup.tcp_fields.tucss = tucss; |
5240 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
70443ae9 | 5241 | context_desc->upper_setup.tcp_fields.tucse = 0; |
e80bd1d1 | 5242 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
3d5e33c9 BA |
5243 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
5244 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
5245 | ||
5246 | buffer_info->time_stamp = jiffies; | |
5247 | buffer_info->next_to_watch = i; | |
5248 | ||
5249 | i++; | |
5250 | if (i == tx_ring->count) | |
5251 | i = 0; | |
5252 | tx_ring->next_to_use = i; | |
5253 | ||
5254 | return 1; | |
bc7f75fa AK |
5255 | } |
5256 | ||
47ccd1ed VY |
5257 | static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb, |
5258 | __be16 protocol) | |
bc7f75fa | 5259 | { |
55aa6985 | 5260 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
5261 | struct e1000_context_desc *context_desc; |
5262 | struct e1000_buffer *buffer_info; | |
5263 | unsigned int i; | |
5264 | u8 css; | |
af807c82 | 5265 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
bc7f75fa | 5266 | |
af807c82 | 5267 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
3992c8ed | 5268 | return false; |
bc7f75fa | 5269 | |
3f518390 | 5270 | switch (protocol) { |
09640e63 | 5271 | case cpu_to_be16(ETH_P_IP): |
af807c82 DG |
5272 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
5273 | cmd_len |= E1000_TXD_CMD_TCP; | |
5274 | break; | |
09640e63 | 5275 | case cpu_to_be16(ETH_P_IPV6): |
af807c82 DG |
5276 | /* XXX not handling all IPV6 headers */ |
5277 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
5278 | cmd_len |= E1000_TXD_CMD_TCP; | |
5279 | break; | |
5280 | default: | |
5281 | if (unlikely(net_ratelimit())) | |
5f66f208 AJ |
5282 | e_warn("checksum_partial proto=%x!\n", |
5283 | be16_to_cpu(protocol)); | |
af807c82 | 5284 | break; |
bc7f75fa AK |
5285 | } |
5286 | ||
0d0b1672 | 5287 | css = skb_checksum_start_offset(skb); |
af807c82 DG |
5288 | |
5289 | i = tx_ring->next_to_use; | |
5290 | buffer_info = &tx_ring->buffer_info[i]; | |
5291 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
5292 | ||
5293 | context_desc->lower_setup.ip_config = 0; | |
5294 | context_desc->upper_setup.tcp_fields.tucss = css; | |
f0ff4398 | 5295 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum_offset; |
af807c82 DG |
5296 | context_desc->upper_setup.tcp_fields.tucse = 0; |
5297 | context_desc->tcp_seg_setup.data = 0; | |
5298 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
5299 | ||
5300 | buffer_info->time_stamp = jiffies; | |
5301 | buffer_info->next_to_watch = i; | |
5302 | ||
5303 | i++; | |
5304 | if (i == tx_ring->count) | |
5305 | i = 0; | |
5306 | tx_ring->next_to_use = i; | |
5307 | ||
3992c8ed | 5308 | return true; |
bc7f75fa AK |
5309 | } |
5310 | ||
55aa6985 BA |
5311 | static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb, |
5312 | unsigned int first, unsigned int max_per_txd, | |
d821a4c4 | 5313 | unsigned int nr_frags) |
bc7f75fa | 5314 | { |
55aa6985 | 5315 | struct e1000_adapter *adapter = tx_ring->adapter; |
03b1320d | 5316 | struct pci_dev *pdev = adapter->pdev; |
1b7719c4 | 5317 | struct e1000_buffer *buffer_info; |
8ddc951c | 5318 | unsigned int len = skb_headlen(skb); |
03b1320d | 5319 | unsigned int offset = 0, size, count = 0, i; |
9ed318d5 | 5320 | unsigned int f, bytecount, segs; |
bc7f75fa AK |
5321 | |
5322 | i = tx_ring->next_to_use; | |
5323 | ||
5324 | while (len) { | |
1b7719c4 | 5325 | buffer_info = &tx_ring->buffer_info[i]; |
bc7f75fa AK |
5326 | size = min(len, max_per_txd); |
5327 | ||
bc7f75fa | 5328 | buffer_info->length = size; |
bc7f75fa | 5329 | buffer_info->time_stamp = jiffies; |
bc7f75fa | 5330 | buffer_info->next_to_watch = i; |
0be3f55f NN |
5331 | buffer_info->dma = dma_map_single(&pdev->dev, |
5332 | skb->data + offset, | |
af667a29 | 5333 | size, DMA_TO_DEVICE); |
03b1320d | 5334 | buffer_info->mapped_as_page = false; |
0be3f55f | 5335 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
03b1320d | 5336 | goto dma_error; |
bc7f75fa AK |
5337 | |
5338 | len -= size; | |
5339 | offset += size; | |
03b1320d | 5340 | count++; |
1b7719c4 AD |
5341 | |
5342 | if (len) { | |
5343 | i++; | |
5344 | if (i == tx_ring->count) | |
5345 | i = 0; | |
5346 | } | |
bc7f75fa AK |
5347 | } |
5348 | ||
5349 | for (f = 0; f < nr_frags; f++) { | |
9e903e08 | 5350 | const struct skb_frag_struct *frag; |
bc7f75fa AK |
5351 | |
5352 | frag = &skb_shinfo(skb)->frags[f]; | |
9e903e08 | 5353 | len = skb_frag_size(frag); |
877749bf | 5354 | offset = 0; |
bc7f75fa AK |
5355 | |
5356 | while (len) { | |
1b7719c4 AD |
5357 | i++; |
5358 | if (i == tx_ring->count) | |
5359 | i = 0; | |
5360 | ||
bc7f75fa AK |
5361 | buffer_info = &tx_ring->buffer_info[i]; |
5362 | size = min(len, max_per_txd); | |
bc7f75fa AK |
5363 | |
5364 | buffer_info->length = size; | |
5365 | buffer_info->time_stamp = jiffies; | |
bc7f75fa | 5366 | buffer_info->next_to_watch = i; |
877749bf | 5367 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
17e813ec BA |
5368 | offset, size, |
5369 | DMA_TO_DEVICE); | |
03b1320d | 5370 | buffer_info->mapped_as_page = true; |
0be3f55f | 5371 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
03b1320d | 5372 | goto dma_error; |
bc7f75fa AK |
5373 | |
5374 | len -= size; | |
5375 | offset += size; | |
5376 | count++; | |
bc7f75fa AK |
5377 | } |
5378 | } | |
5379 | ||
af667a29 | 5380 | segs = skb_shinfo(skb)->gso_segs ? : 1; |
9ed318d5 TH |
5381 | /* multiply data chunks by size of headers */ |
5382 | bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; | |
5383 | ||
bc7f75fa | 5384 | tx_ring->buffer_info[i].skb = skb; |
9ed318d5 TH |
5385 | tx_ring->buffer_info[i].segs = segs; |
5386 | tx_ring->buffer_info[i].bytecount = bytecount; | |
bc7f75fa AK |
5387 | tx_ring->buffer_info[first].next_to_watch = i; |
5388 | ||
5389 | return count; | |
03b1320d AD |
5390 | |
5391 | dma_error: | |
af667a29 | 5392 | dev_err(&pdev->dev, "Tx DMA map failed\n"); |
03b1320d | 5393 | buffer_info->dma = 0; |
c1fa347f | 5394 | if (count) |
03b1320d | 5395 | count--; |
c1fa347f RK |
5396 | |
5397 | while (count--) { | |
af667a29 | 5398 | if (i == 0) |
03b1320d | 5399 | i += tx_ring->count; |
c1fa347f | 5400 | i--; |
03b1320d | 5401 | buffer_info = &tx_ring->buffer_info[i]; |
55aa6985 | 5402 | e1000_put_txbuf(tx_ring, buffer_info); |
03b1320d AD |
5403 | } |
5404 | ||
5405 | return 0; | |
bc7f75fa AK |
5406 | } |
5407 | ||
55aa6985 | 5408 | static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count) |
bc7f75fa | 5409 | { |
55aa6985 | 5410 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
5411 | struct e1000_tx_desc *tx_desc = NULL; |
5412 | struct e1000_buffer *buffer_info; | |
5413 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
5414 | unsigned int i; | |
5415 | ||
5416 | if (tx_flags & E1000_TX_FLAGS_TSO) { | |
5417 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
f0ff4398 | 5418 | E1000_TXD_CMD_TSE; |
bc7f75fa AK |
5419 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
5420 | ||
5421 | if (tx_flags & E1000_TX_FLAGS_IPV4) | |
5422 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
5423 | } | |
5424 | ||
5425 | if (tx_flags & E1000_TX_FLAGS_CSUM) { | |
5426 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
5427 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
5428 | } | |
5429 | ||
5430 | if (tx_flags & E1000_TX_FLAGS_VLAN) { | |
5431 | txd_lower |= E1000_TXD_CMD_VLE; | |
5432 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
5433 | } | |
5434 | ||
943146de BG |
5435 | if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
5436 | txd_lower &= ~(E1000_TXD_CMD_IFCS); | |
5437 | ||
b67e1913 BA |
5438 | if (unlikely(tx_flags & E1000_TX_FLAGS_HWTSTAMP)) { |
5439 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
5440 | txd_upper |= E1000_TXD_EXTCMD_TSTAMP; | |
5441 | } | |
5442 | ||
bc7f75fa AK |
5443 | i = tx_ring->next_to_use; |
5444 | ||
36b973df | 5445 | do { |
bc7f75fa AK |
5446 | buffer_info = &tx_ring->buffer_info[i]; |
5447 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
5448 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
f0ff4398 BA |
5449 | tx_desc->lower.data = cpu_to_le32(txd_lower | |
5450 | buffer_info->length); | |
bc7f75fa AK |
5451 | tx_desc->upper.data = cpu_to_le32(txd_upper); |
5452 | ||
5453 | i++; | |
5454 | if (i == tx_ring->count) | |
5455 | i = 0; | |
36b973df | 5456 | } while (--count > 0); |
bc7f75fa AK |
5457 | |
5458 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
5459 | ||
943146de BG |
5460 | /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */ |
5461 | if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) | |
5462 | tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS)); | |
5463 | ||
e921eb1a | 5464 | /* Force memory writes to complete before letting h/w |
bc7f75fa AK |
5465 | * know there are new descriptors to fetch. (Only |
5466 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
5467 | * such as IA-64). |
5468 | */ | |
bc7f75fa AK |
5469 | wmb(); |
5470 | ||
5471 | tx_ring->next_to_use = i; | |
bc7f75fa AK |
5472 | } |
5473 | ||
5474 | #define MINIMUM_DHCP_PACKET_SIZE 282 | |
5475 | static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, | |
5476 | struct sk_buff *skb) | |
5477 | { | |
e80bd1d1 | 5478 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
5479 | u16 length, offset; |
5480 | ||
df8a39de JP |
5481 | if (skb_vlan_tag_present(skb) && |
5482 | !((skb_vlan_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
d60923c4 BA |
5483 | (adapter->hw.mng_cookie.status & |
5484 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) | |
5485 | return 0; | |
bc7f75fa AK |
5486 | |
5487 | if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) | |
5488 | return 0; | |
5489 | ||
53aa82da | 5490 | if (((struct ethhdr *)skb->data)->h_proto != htons(ETH_P_IP)) |
bc7f75fa AK |
5491 | return 0; |
5492 | ||
5493 | { | |
362e20ca | 5494 | const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data + 14); |
bc7f75fa AK |
5495 | struct udphdr *udp; |
5496 | ||
5497 | if (ip->protocol != IPPROTO_UDP) | |
5498 | return 0; | |
5499 | ||
5500 | udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); | |
5501 | if (ntohs(udp->dest) != 67) | |
5502 | return 0; | |
5503 | ||
5504 | offset = (u8 *)udp + 8 - skb->data; | |
5505 | length = skb->len - offset; | |
5506 | return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); | |
5507 | } | |
5508 | ||
5509 | return 0; | |
5510 | } | |
5511 | ||
55aa6985 | 5512 | static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
bc7f75fa | 5513 | { |
55aa6985 | 5514 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa | 5515 | |
55aa6985 | 5516 | netif_stop_queue(adapter->netdev); |
e921eb1a | 5517 | /* Herbert's original patch had: |
bc7f75fa | 5518 | * smp_mb__after_netif_stop_queue(); |
ad68076e BA |
5519 | * but since that doesn't exist yet, just open code it. |
5520 | */ | |
bc7f75fa AK |
5521 | smp_mb(); |
5522 | ||
e921eb1a | 5523 | /* We need to check again in a case another CPU has just |
ad68076e BA |
5524 | * made room available. |
5525 | */ | |
55aa6985 | 5526 | if (e1000_desc_unused(tx_ring) < size) |
bc7f75fa AK |
5527 | return -EBUSY; |
5528 | ||
5529 | /* A reprieve! */ | |
55aa6985 | 5530 | netif_start_queue(adapter->netdev); |
bc7f75fa AK |
5531 | ++adapter->restart_queue; |
5532 | return 0; | |
5533 | } | |
5534 | ||
55aa6985 | 5535 | static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
bc7f75fa | 5536 | { |
d821a4c4 BA |
5537 | BUG_ON(size > tx_ring->count); |
5538 | ||
55aa6985 | 5539 | if (e1000_desc_unused(tx_ring) >= size) |
bc7f75fa | 5540 | return 0; |
55aa6985 | 5541 | return __e1000_maybe_stop_tx(tx_ring, size); |
bc7f75fa AK |
5542 | } |
5543 | ||
3b29a56d SH |
5544 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
5545 | struct net_device *netdev) | |
bc7f75fa AK |
5546 | { |
5547 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5548 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
5549 | unsigned int first; | |
bc7f75fa | 5550 | unsigned int tx_flags = 0; |
e743d313 | 5551 | unsigned int len = skb_headlen(skb); |
4e6c709c AK |
5552 | unsigned int nr_frags; |
5553 | unsigned int mss; | |
bc7f75fa AK |
5554 | int count = 0; |
5555 | int tso; | |
5556 | unsigned int f; | |
47ccd1ed | 5557 | __be16 protocol = vlan_get_protocol(skb); |
bc7f75fa AK |
5558 | |
5559 | if (test_bit(__E1000_DOWN, &adapter->state)) { | |
5560 | dev_kfree_skb_any(skb); | |
5561 | return NETDEV_TX_OK; | |
5562 | } | |
5563 | ||
5564 | if (skb->len <= 0) { | |
5565 | dev_kfree_skb_any(skb); | |
5566 | return NETDEV_TX_OK; | |
5567 | } | |
5568 | ||
e921eb1a | 5569 | /* The minimum packet size with TCTL.PSP set is 17 bytes so |
6e97c170 TD |
5570 | * pad skb in order to meet this minimum size requirement |
5571 | */ | |
a94d9e22 AD |
5572 | if (skb_put_padto(skb, 17)) |
5573 | return NETDEV_TX_OK; | |
6e97c170 | 5574 | |
bc7f75fa | 5575 | mss = skb_shinfo(skb)->gso_size; |
bc7f75fa AK |
5576 | if (mss) { |
5577 | u8 hdr_len; | |
bc7f75fa | 5578 | |
e921eb1a | 5579 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
ad68076e BA |
5580 | * points to just header, pull a few bytes of payload from |
5581 | * frags into skb->data | |
5582 | */ | |
bc7f75fa | 5583 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
e921eb1a | 5584 | /* we do this workaround for ES2LAN, but it is un-necessary, |
ad68076e BA |
5585 | * avoiding it could save a lot of cycles |
5586 | */ | |
4e6c709c | 5587 | if (skb->data_len && (hdr_len == len)) { |
bc7f75fa AK |
5588 | unsigned int pull_size; |
5589 | ||
a2a5b323 | 5590 | pull_size = min_t(unsigned int, 4, skb->data_len); |
bc7f75fa | 5591 | if (!__pskb_pull_tail(skb, pull_size)) { |
44defeb3 | 5592 | e_err("__pskb_pull_tail failed.\n"); |
bc7f75fa AK |
5593 | dev_kfree_skb_any(skb); |
5594 | return NETDEV_TX_OK; | |
5595 | } | |
e743d313 | 5596 | len = skb_headlen(skb); |
bc7f75fa AK |
5597 | } |
5598 | } | |
5599 | ||
5600 | /* reserve a descriptor for the offload context */ | |
5601 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) | |
5602 | count++; | |
5603 | count++; | |
5604 | ||
d821a4c4 | 5605 | count += DIV_ROUND_UP(len, adapter->tx_fifo_limit); |
bc7f75fa AK |
5606 | |
5607 | nr_frags = skb_shinfo(skb)->nr_frags; | |
5608 | for (f = 0; f < nr_frags; f++) | |
d821a4c4 BA |
5609 | count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
5610 | adapter->tx_fifo_limit); | |
bc7f75fa AK |
5611 | |
5612 | if (adapter->hw.mac.tx_pkt_filtering) | |
5613 | e1000_transfer_dhcp_info(adapter, skb); | |
5614 | ||
e921eb1a | 5615 | /* need: count + 2 desc gap to keep tail from touching |
ad68076e BA |
5616 | * head, otherwise try next time |
5617 | */ | |
55aa6985 | 5618 | if (e1000_maybe_stop_tx(tx_ring, count + 2)) |
bc7f75fa | 5619 | return NETDEV_TX_BUSY; |
bc7f75fa | 5620 | |
df8a39de | 5621 | if (skb_vlan_tag_present(skb)) { |
bc7f75fa | 5622 | tx_flags |= E1000_TX_FLAGS_VLAN; |
df8a39de JP |
5623 | tx_flags |= (skb_vlan_tag_get(skb) << |
5624 | E1000_TX_FLAGS_VLAN_SHIFT); | |
bc7f75fa AK |
5625 | } |
5626 | ||
5627 | first = tx_ring->next_to_use; | |
5628 | ||
47ccd1ed | 5629 | tso = e1000_tso(tx_ring, skb, protocol); |
bc7f75fa AK |
5630 | if (tso < 0) { |
5631 | dev_kfree_skb_any(skb); | |
bc7f75fa AK |
5632 | return NETDEV_TX_OK; |
5633 | } | |
5634 | ||
5635 | if (tso) | |
5636 | tx_flags |= E1000_TX_FLAGS_TSO; | |
47ccd1ed | 5637 | else if (e1000_tx_csum(tx_ring, skb, protocol)) |
bc7f75fa AK |
5638 | tx_flags |= E1000_TX_FLAGS_CSUM; |
5639 | ||
e921eb1a | 5640 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
bc7f75fa | 5641 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
ad68076e BA |
5642 | * no longer assume, we must. |
5643 | */ | |
47ccd1ed | 5644 | if (protocol == htons(ETH_P_IP)) |
bc7f75fa AK |
5645 | tx_flags |= E1000_TX_FLAGS_IPV4; |
5646 | ||
943146de BG |
5647 | if (unlikely(skb->no_fcs)) |
5648 | tx_flags |= E1000_TX_FLAGS_NO_FCS; | |
5649 | ||
25985edc | 5650 | /* if count is 0 then mapping error has occurred */ |
d821a4c4 BA |
5651 | count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit, |
5652 | nr_frags); | |
1b7719c4 | 5653 | if (count) { |
6930895d MK |
5654 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && |
5655 | (adapter->flags & FLAG_HAS_HW_TIMESTAMP) && | |
5656 | !adapter->tx_hwtstamp_skb) { | |
b67e1913 BA |
5657 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
5658 | tx_flags |= E1000_TX_FLAGS_HWTSTAMP; | |
5659 | adapter->tx_hwtstamp_skb = skb_get(skb); | |
59c871c5 | 5660 | adapter->tx_hwtstamp_start = jiffies; |
b67e1913 BA |
5661 | schedule_work(&adapter->tx_hwtstamp_work); |
5662 | } else { | |
5663 | skb_tx_timestamp(skb); | |
5664 | } | |
80be3129 | 5665 | |
3f0cfa3b | 5666 | netdev_sent_queue(netdev, skb->len); |
55aa6985 | 5667 | e1000_tx_queue(tx_ring, tx_flags, count); |
1b7719c4 | 5668 | /* Make sure there is space in the ring for the next send. */ |
d821a4c4 BA |
5669 | e1000_maybe_stop_tx(tx_ring, |
5670 | (MAX_SKB_FRAGS * | |
5671 | DIV_ROUND_UP(PAGE_SIZE, | |
5672 | adapter->tx_fifo_limit) + 2)); | |
472f31f5 FW |
5673 | |
5674 | if (!skb->xmit_more || | |
5675 | netif_xmit_stopped(netdev_get_tx_queue(netdev, 0))) { | |
5676 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) | |
5677 | e1000e_update_tdt_wa(tx_ring, | |
5678 | tx_ring->next_to_use); | |
5679 | else | |
5680 | writel(tx_ring->next_to_use, tx_ring->tail); | |
5681 | ||
5682 | /* we need this if more than one processor can write | |
5683 | * to our tail at a time, it synchronizes IO on | |
5684 | *IA64/Altix systems | |
5685 | */ | |
5686 | mmiowb(); | |
5687 | } | |
1b7719c4 | 5688 | } else { |
bc7f75fa | 5689 | dev_kfree_skb_any(skb); |
1b7719c4 AD |
5690 | tx_ring->buffer_info[first].time_stamp = 0; |
5691 | tx_ring->next_to_use = first; | |
bc7f75fa AK |
5692 | } |
5693 | ||
bc7f75fa AK |
5694 | return NETDEV_TX_OK; |
5695 | } | |
5696 | ||
5697 | /** | |
5698 | * e1000_tx_timeout - Respond to a Tx Hang | |
5699 | * @netdev: network interface device structure | |
5700 | **/ | |
5701 | static void e1000_tx_timeout(struct net_device *netdev) | |
5702 | { | |
5703 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5704 | ||
5705 | /* Do the reset outside of interrupt context */ | |
5706 | adapter->tx_timeout_count++; | |
5707 | schedule_work(&adapter->reset_task); | |
5708 | } | |
5709 | ||
5710 | static void e1000_reset_task(struct work_struct *work) | |
5711 | { | |
5712 | struct e1000_adapter *adapter; | |
5713 | adapter = container_of(work, struct e1000_adapter, reset_task); | |
5714 | ||
615b32af JB |
5715 | /* don't run the task if already down */ |
5716 | if (test_bit(__E1000_DOWN, &adapter->state)) | |
5717 | return; | |
5718 | ||
12d43f7d | 5719 | if (!(adapter->flags & FLAG_RESTART_NOW)) { |
affa9dfb | 5720 | e1000e_dump(adapter); |
12d43f7d | 5721 | e_err("Reset adapter unexpectedly\n"); |
affa9dfb | 5722 | } |
bc7f75fa AK |
5723 | e1000e_reinit_locked(adapter); |
5724 | } | |
5725 | ||
5726 | /** | |
67fd4fcb | 5727 | * e1000_get_stats64 - Get System Network Statistics |
bc7f75fa | 5728 | * @netdev: network interface device structure |
67fd4fcb | 5729 | * @stats: rtnl_link_stats64 pointer |
bc7f75fa AK |
5730 | * |
5731 | * Returns the address of the device statistics structure. | |
bc7f75fa | 5732 | **/ |
67fd4fcb | 5733 | struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, |
66501f56 | 5734 | struct rtnl_link_stats64 *stats) |
bc7f75fa | 5735 | { |
67fd4fcb JK |
5736 | struct e1000_adapter *adapter = netdev_priv(netdev); |
5737 | ||
5738 | memset(stats, 0, sizeof(struct rtnl_link_stats64)); | |
5739 | spin_lock(&adapter->stats64_lock); | |
5740 | e1000e_update_stats(adapter); | |
5741 | /* Fill out the OS statistics structure */ | |
5742 | stats->rx_bytes = adapter->stats.gorc; | |
5743 | stats->rx_packets = adapter->stats.gprc; | |
5744 | stats->tx_bytes = adapter->stats.gotc; | |
5745 | stats->tx_packets = adapter->stats.gptc; | |
5746 | stats->multicast = adapter->stats.mprc; | |
5747 | stats->collisions = adapter->stats.colc; | |
5748 | ||
5749 | /* Rx Errors */ | |
5750 | ||
e921eb1a | 5751 | /* RLEC on some newer hardware can be incorrect so build |
67fd4fcb JK |
5752 | * our own version based on RUC and ROC |
5753 | */ | |
5754 | stats->rx_errors = adapter->stats.rxerrc + | |
f0ff4398 BA |
5755 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
5756 | adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr; | |
5757 | stats->rx_length_errors = adapter->stats.ruc + adapter->stats.roc; | |
67fd4fcb JK |
5758 | stats->rx_crc_errors = adapter->stats.crcerrs; |
5759 | stats->rx_frame_errors = adapter->stats.algnerrc; | |
5760 | stats->rx_missed_errors = adapter->stats.mpc; | |
5761 | ||
5762 | /* Tx Errors */ | |
f0ff4398 | 5763 | stats->tx_errors = adapter->stats.ecol + adapter->stats.latecol; |
67fd4fcb JK |
5764 | stats->tx_aborted_errors = adapter->stats.ecol; |
5765 | stats->tx_window_errors = adapter->stats.latecol; | |
5766 | stats->tx_carrier_errors = adapter->stats.tncrs; | |
5767 | ||
5768 | /* Tx Dropped needs to be maintained elsewhere */ | |
5769 | ||
5770 | spin_unlock(&adapter->stats64_lock); | |
5771 | return stats; | |
bc7f75fa AK |
5772 | } |
5773 | ||
5774 | /** | |
5775 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
5776 | * @netdev: network interface device structure | |
5777 | * @new_mtu: new value for maximum frame size | |
5778 | * | |
5779 | * Returns 0 on success, negative on failure | |
5780 | **/ | |
5781 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
5782 | { | |
5783 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
c751a3d5 | 5784 | int max_frame = new_mtu + VLAN_HLEN + ETH_HLEN + ETH_FCS_LEN; |
bc7f75fa | 5785 | |
2adc55c9 | 5786 | /* Jumbo frame support */ |
2e1706f2 BA |
5787 | if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
5788 | !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { | |
5789 | e_err("Jumbo Frames not supported.\n"); | |
5790 | return -EINVAL; | |
bc7f75fa AK |
5791 | } |
5792 | ||
2adc55c9 BA |
5793 | /* Supported frame sizes */ |
5794 | if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || | |
5795 | (max_frame > adapter->max_hw_frame_size)) { | |
5796 | e_err("Unsupported MTU setting\n"); | |
bc7f75fa AK |
5797 | return -EINVAL; |
5798 | } | |
5799 | ||
2fbe4526 BA |
5800 | /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */ |
5801 | if ((adapter->hw.mac.type >= e1000_pch2lan) && | |
a1ce6473 BA |
5802 | !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
5803 | (new_mtu > ETH_DATA_LEN)) { | |
2fbe4526 | 5804 | e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n"); |
a1ce6473 BA |
5805 | return -EINVAL; |
5806 | } | |
5807 | ||
bc7f75fa | 5808 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
1bba4386 | 5809 | usleep_range(1000, 2000); |
610c9928 | 5810 | /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
318a94d6 | 5811 | adapter->max_frame_size = max_frame; |
610c9928 BA |
5812 | e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
5813 | netdev->mtu = new_mtu; | |
63eb48f1 DE |
5814 | |
5815 | pm_runtime_get_sync(netdev->dev.parent); | |
5816 | ||
bc7f75fa | 5817 | if (netif_running(netdev)) |
28002099 | 5818 | e1000e_down(adapter, true); |
bc7f75fa | 5819 | |
e921eb1a | 5820 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
bc7f75fa AK |
5821 | * means we reserve 2 more, this pushes us to allocate from the next |
5822 | * larger slab size. | |
ad68076e | 5823 | * i.e. RXBUFFER_2048 --> size-4096 slab |
97ac8cae BA |
5824 | * However with the new *_jumbo_rx* routines, jumbo receives will use |
5825 | * fragmented skbs | |
ad68076e | 5826 | */ |
bc7f75fa | 5827 | |
9926146b | 5828 | if (max_frame <= 2048) |
bc7f75fa AK |
5829 | adapter->rx_buffer_len = 2048; |
5830 | else | |
5831 | adapter->rx_buffer_len = 4096; | |
5832 | ||
5833 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
5834 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
17e813ec | 5835 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
bc7f75fa | 5836 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
17e813ec | 5837 | + ETH_FCS_LEN; |
bc7f75fa | 5838 | |
bc7f75fa AK |
5839 | if (netif_running(netdev)) |
5840 | e1000e_up(adapter); | |
5841 | else | |
5842 | e1000e_reset(adapter); | |
5843 | ||
63eb48f1 DE |
5844 | pm_runtime_put_sync(netdev->dev.parent); |
5845 | ||
bc7f75fa AK |
5846 | clear_bit(__E1000_RESETTING, &adapter->state); |
5847 | ||
5848 | return 0; | |
5849 | } | |
5850 | ||
5851 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
5852 | int cmd) | |
5853 | { | |
5854 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5855 | struct mii_ioctl_data *data = if_mii(ifr); | |
bc7f75fa | 5856 | |
318a94d6 | 5857 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
bc7f75fa AK |
5858 | return -EOPNOTSUPP; |
5859 | ||
5860 | switch (cmd) { | |
5861 | case SIOCGMIIPHY: | |
5862 | data->phy_id = adapter->hw.phy.addr; | |
5863 | break; | |
5864 | case SIOCGMIIREG: | |
b16a002e BA |
5865 | e1000_phy_read_status(adapter); |
5866 | ||
7c25769f BA |
5867 | switch (data->reg_num & 0x1F) { |
5868 | case MII_BMCR: | |
5869 | data->val_out = adapter->phy_regs.bmcr; | |
5870 | break; | |
5871 | case MII_BMSR: | |
5872 | data->val_out = adapter->phy_regs.bmsr; | |
5873 | break; | |
5874 | case MII_PHYSID1: | |
5875 | data->val_out = (adapter->hw.phy.id >> 16); | |
5876 | break; | |
5877 | case MII_PHYSID2: | |
5878 | data->val_out = (adapter->hw.phy.id & 0xFFFF); | |
5879 | break; | |
5880 | case MII_ADVERTISE: | |
5881 | data->val_out = adapter->phy_regs.advertise; | |
5882 | break; | |
5883 | case MII_LPA: | |
5884 | data->val_out = adapter->phy_regs.lpa; | |
5885 | break; | |
5886 | case MII_EXPANSION: | |
5887 | data->val_out = adapter->phy_regs.expansion; | |
5888 | break; | |
5889 | case MII_CTRL1000: | |
5890 | data->val_out = adapter->phy_regs.ctrl1000; | |
5891 | break; | |
5892 | case MII_STAT1000: | |
5893 | data->val_out = adapter->phy_regs.stat1000; | |
5894 | break; | |
5895 | case MII_ESTATUS: | |
5896 | data->val_out = adapter->phy_regs.estatus; | |
5897 | break; | |
5898 | default: | |
bc7f75fa AK |
5899 | return -EIO; |
5900 | } | |
bc7f75fa AK |
5901 | break; |
5902 | case SIOCSMIIREG: | |
5903 | default: | |
5904 | return -EOPNOTSUPP; | |
5905 | } | |
5906 | return 0; | |
5907 | } | |
5908 | ||
b67e1913 BA |
5909 | /** |
5910 | * e1000e_hwtstamp_ioctl - control hardware time stamping | |
5911 | * @netdev: network interface device structure | |
5912 | * @ifreq: interface request | |
5913 | * | |
5914 | * Outgoing time stamping can be enabled and disabled. Play nice and | |
5915 | * disable it when requested, although it shouldn't cause any overhead | |
5916 | * when no packet needs it. At most one packet in the queue may be | |
5917 | * marked for time stamping, otherwise it would be impossible to tell | |
5918 | * for sure to which packet the hardware time stamp belongs. | |
5919 | * | |
5920 | * Incoming time stamping has to be configured via the hardware filters. | |
5921 | * Not all combinations are supported, in particular event type has to be | |
5922 | * specified. Matching the kind of event packet is not supported, with the | |
5923 | * exception of "all V2 events regardless of level 2 or 4". | |
5924 | **/ | |
4e8cff64 | 5925 | static int e1000e_hwtstamp_set(struct net_device *netdev, struct ifreq *ifr) |
b67e1913 BA |
5926 | { |
5927 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5928 | struct hwtstamp_config config; | |
5929 | int ret_val; | |
5930 | ||
5931 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) | |
5932 | return -EFAULT; | |
5933 | ||
62d7e3a2 | 5934 | ret_val = e1000e_config_hwtstamp(adapter, &config); |
b67e1913 BA |
5935 | if (ret_val) |
5936 | return ret_val; | |
5937 | ||
d89777bf BA |
5938 | switch (config.rx_filter) { |
5939 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
5940 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
5941 | case HWTSTAMP_FILTER_PTP_V2_SYNC: | |
5942 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: | |
5943 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
5944 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
5945 | /* With V2 type filters which specify a Sync or Delay Request, | |
5946 | * Path Delay Request/Response messages are also time stamped | |
5947 | * by hardware so notify the caller the requested packets plus | |
5948 | * some others are time stamped. | |
5949 | */ | |
5950 | config.rx_filter = HWTSTAMP_FILTER_SOME; | |
5951 | break; | |
5952 | default: | |
5953 | break; | |
5954 | } | |
5955 | ||
b67e1913 BA |
5956 | return copy_to_user(ifr->ifr_data, &config, |
5957 | sizeof(config)) ? -EFAULT : 0; | |
5958 | } | |
5959 | ||
4e8cff64 BH |
5960 | static int e1000e_hwtstamp_get(struct net_device *netdev, struct ifreq *ifr) |
5961 | { | |
5962 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5963 | ||
5964 | return copy_to_user(ifr->ifr_data, &adapter->hwtstamp_config, | |
5965 | sizeof(adapter->hwtstamp_config)) ? -EFAULT : 0; | |
5966 | } | |
5967 | ||
bc7f75fa AK |
5968 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
5969 | { | |
5970 | switch (cmd) { | |
5971 | case SIOCGMIIPHY: | |
5972 | case SIOCGMIIREG: | |
5973 | case SIOCSMIIREG: | |
5974 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
b67e1913 | 5975 | case SIOCSHWTSTAMP: |
4e8cff64 BH |
5976 | return e1000e_hwtstamp_set(netdev, ifr); |
5977 | case SIOCGHWTSTAMP: | |
5978 | return e1000e_hwtstamp_get(netdev, ifr); | |
bc7f75fa AK |
5979 | default: |
5980 | return -EOPNOTSUPP; | |
5981 | } | |
5982 | } | |
5983 | ||
a4f58f54 BA |
5984 | static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
5985 | { | |
5986 | struct e1000_hw *hw = &adapter->hw; | |
74f350ee | 5987 | u32 i, mac_reg, wuc; |
2b6b168d | 5988 | u16 phy_reg, wuc_enable; |
70806a7f | 5989 | int retval; |
a4f58f54 BA |
5990 | |
5991 | /* copy MAC RARs to PHY RARs */ | |
d3738bb8 | 5992 | e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
a4f58f54 | 5993 | |
2b6b168d BA |
5994 | retval = hw->phy.ops.acquire(hw); |
5995 | if (retval) { | |
5996 | e_err("Could not acquire PHY\n"); | |
5997 | return retval; | |
5998 | } | |
5999 | ||
6000 | /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */ | |
6001 | retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable); | |
6002 | if (retval) | |
75ce1532 | 6003 | goto release; |
2b6b168d BA |
6004 | |
6005 | /* copy MAC MTA to PHY MTA - only needed for pchlan */ | |
a4f58f54 BA |
6006 | for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
6007 | mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); | |
2b6b168d BA |
6008 | hw->phy.ops.write_reg_page(hw, BM_MTA(i), |
6009 | (u16)(mac_reg & 0xFFFF)); | |
6010 | hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1, | |
6011 | (u16)((mac_reg >> 16) & 0xFFFF)); | |
a4f58f54 BA |
6012 | } |
6013 | ||
6014 | /* configure PHY Rx Control register */ | |
2b6b168d | 6015 | hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg); |
a4f58f54 BA |
6016 | mac_reg = er32(RCTL); |
6017 | if (mac_reg & E1000_RCTL_UPE) | |
6018 | phy_reg |= BM_RCTL_UPE; | |
6019 | if (mac_reg & E1000_RCTL_MPE) | |
6020 | phy_reg |= BM_RCTL_MPE; | |
6021 | phy_reg &= ~(BM_RCTL_MO_MASK); | |
6022 | if (mac_reg & E1000_RCTL_MO_3) | |
6023 | phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) | |
17e813ec | 6024 | << BM_RCTL_MO_SHIFT); |
a4f58f54 BA |
6025 | if (mac_reg & E1000_RCTL_BAM) |
6026 | phy_reg |= BM_RCTL_BAM; | |
6027 | if (mac_reg & E1000_RCTL_PMCF) | |
6028 | phy_reg |= BM_RCTL_PMCF; | |
6029 | mac_reg = er32(CTRL); | |
6030 | if (mac_reg & E1000_CTRL_RFCE) | |
6031 | phy_reg |= BM_RCTL_RFCE; | |
2b6b168d | 6032 | hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg); |
a4f58f54 | 6033 | |
74f350ee DE |
6034 | wuc = E1000_WUC_PME_EN; |
6035 | if (wufc & (E1000_WUFC_MAG | E1000_WUFC_LNKC)) | |
6036 | wuc |= E1000_WUC_APME; | |
6037 | ||
a4f58f54 BA |
6038 | /* enable PHY wakeup in MAC register */ |
6039 | ew32(WUFC, wufc); | |
74f350ee DE |
6040 | ew32(WUC, (E1000_WUC_PHY_WAKE | E1000_WUC_APMPME | |
6041 | E1000_WUC_PME_STATUS | wuc)); | |
a4f58f54 BA |
6042 | |
6043 | /* configure and enable PHY wakeup in PHY registers */ | |
2b6b168d | 6044 | hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc); |
74f350ee | 6045 | hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, wuc); |
a4f58f54 BA |
6046 | |
6047 | /* activate PHY wakeup */ | |
2b6b168d BA |
6048 | wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
6049 | retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable); | |
a4f58f54 BA |
6050 | if (retval) |
6051 | e_err("Could not set PHY Host Wakeup bit\n"); | |
75ce1532 | 6052 | release: |
94d8186a | 6053 | hw->phy.ops.release(hw); |
a4f58f54 BA |
6054 | |
6055 | return retval; | |
6056 | } | |
6057 | ||
2a7e19af DE |
6058 | static void e1000e_flush_lpic(struct pci_dev *pdev) |
6059 | { | |
6060 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6061 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6062 | struct e1000_hw *hw = &adapter->hw; | |
6063 | u32 ret_val; | |
6064 | ||
6065 | pm_runtime_get_sync(netdev->dev.parent); | |
6066 | ||
6067 | ret_val = hw->phy.ops.acquire(hw); | |
6068 | if (ret_val) | |
6069 | goto fl_out; | |
6070 | ||
6071 | pr_info("EEE TX LPI TIMER: %08X\n", | |
6072 | er32(LPIC) >> E1000_LPIC_LPIET_SHIFT); | |
6073 | ||
6074 | hw->phy.ops.release(hw); | |
6075 | ||
6076 | fl_out: | |
6077 | pm_runtime_put_sync(netdev->dev.parent); | |
6078 | } | |
6079 | ||
28002099 | 6080 | static int e1000e_pm_freeze(struct device *dev) |
bc7f75fa | 6081 | { |
28002099 | 6082 | struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); |
bc7f75fa | 6083 | struct e1000_adapter *adapter = netdev_priv(netdev); |
bc7f75fa AK |
6084 | |
6085 | netif_device_detach(netdev); | |
6086 | ||
6087 | if (netif_running(netdev)) { | |
bb9e44d0 BA |
6088 | int count = E1000_CHECK_RESET_COUNT; |
6089 | ||
6090 | while (test_bit(__E1000_RESETTING, &adapter->state) && count--) | |
6091 | usleep_range(10000, 20000); | |
6092 | ||
bc7f75fa | 6093 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
28002099 DE |
6094 | |
6095 | /* Quiesce the device without resetting the hardware */ | |
6096 | e1000e_down(adapter, false); | |
bc7f75fa AK |
6097 | e1000_free_irq(adapter); |
6098 | } | |
4662e82b | 6099 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa | 6100 | |
28002099 DE |
6101 | /* Allow time for pending master requests to run */ |
6102 | e1000e_disable_pcie_master(&adapter->hw); | |
6103 | ||
6104 | return 0; | |
6105 | } | |
6106 | ||
6107 | static int __e1000_shutdown(struct pci_dev *pdev, bool runtime) | |
6108 | { | |
6109 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6110 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6111 | struct e1000_hw *hw = &adapter->hw; | |
6112 | u32 ctrl, ctrl_ext, rctl, status; | |
6113 | /* Runtime suspend should only enable wakeup for link changes */ | |
6114 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; | |
6115 | int retval = 0; | |
6116 | ||
bc7f75fa AK |
6117 | status = er32(STATUS); |
6118 | if (status & E1000_STATUS_LU) | |
6119 | wufc &= ~E1000_WUFC_LNKC; | |
6120 | ||
6121 | if (wufc) { | |
6122 | e1000_setup_rctl(adapter); | |
ef9b965a | 6123 | e1000e_set_rx_mode(netdev); |
bc7f75fa AK |
6124 | |
6125 | /* turn on all-multi mode if wake on multicast is enabled */ | |
6126 | if (wufc & E1000_WUFC_MC) { | |
6127 | rctl = er32(RCTL); | |
6128 | rctl |= E1000_RCTL_MPE; | |
6129 | ew32(RCTL, rctl); | |
6130 | } | |
6131 | ||
6132 | ctrl = er32(CTRL); | |
a4f58f54 BA |
6133 | ctrl |= E1000_CTRL_ADVD3WUC; |
6134 | if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) | |
6135 | ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; | |
bc7f75fa AK |
6136 | ew32(CTRL, ctrl); |
6137 | ||
318a94d6 JK |
6138 | if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
6139 | adapter->hw.phy.media_type == | |
6140 | e1000_media_type_internal_serdes) { | |
bc7f75fa AK |
6141 | /* keep the laser running in D3 */ |
6142 | ctrl_ext = er32(CTRL_EXT); | |
93a23f48 | 6143 | ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
bc7f75fa AK |
6144 | ew32(CTRL_EXT, ctrl_ext); |
6145 | } | |
6146 | ||
63eb48f1 DE |
6147 | if (!runtime) |
6148 | e1000e_power_up_phy(adapter); | |
6149 | ||
97ac8cae | 6150 | if (adapter->flags & FLAG_IS_ICH) |
99730e4c | 6151 | e1000_suspend_workarounds_ich8lan(&adapter->hw); |
97ac8cae | 6152 | |
82776a4b | 6153 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
a4f58f54 BA |
6154 | /* enable wakeup by the PHY */ |
6155 | retval = e1000_init_phy_wakeup(adapter, wufc); | |
6156 | if (retval) | |
6157 | return retval; | |
6158 | } else { | |
6159 | /* enable wakeup by the MAC */ | |
6160 | ew32(WUFC, wufc); | |
6161 | ew32(WUC, E1000_WUC_PME_EN); | |
6162 | } | |
bc7f75fa AK |
6163 | } else { |
6164 | ew32(WUC, 0); | |
6165 | ew32(WUFC, 0); | |
28002099 DE |
6166 | |
6167 | e1000_power_down_phy(adapter); | |
bc7f75fa AK |
6168 | } |
6169 | ||
74f350ee | 6170 | if (adapter->hw.phy.type == e1000_phy_igp_3) { |
bc7f75fa | 6171 | e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
79849ebc DE |
6172 | } else if ((hw->mac.type == e1000_pch_lpt) || |
6173 | (hw->mac.type == e1000_pch_spt)) { | |
74f350ee DE |
6174 | if (!(wufc & (E1000_WUFC_EX | E1000_WUFC_MC | E1000_WUFC_BC))) |
6175 | /* ULP does not support wake from unicast, multicast | |
6176 | * or broadcast. | |
6177 | */ | |
6178 | retval = e1000_enable_ulp_lpt_lp(hw, !runtime); | |
6179 | ||
6180 | if (retval) | |
6181 | return retval; | |
6182 | } | |
6183 | ||
bc7f75fa | 6184 | |
e921eb1a | 6185 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
ad68076e BA |
6186 | * would have already happened in close and is redundant. |
6187 | */ | |
31dbe5b4 | 6188 | e1000e_release_hw_control(adapter); |
bc7f75fa | 6189 | |
24b41c97 DN |
6190 | pci_clear_master(pdev); |
6191 | ||
e921eb1a | 6192 | /* The pci-e switch on some quad port adapters will report a |
005cbdfc AD |
6193 | * correctable error when the MAC transitions from D0 to D3. To |
6194 | * prevent this we need to mask off the correctable errors on the | |
6195 | * downstream port of the pci-e switch. | |
e8c254c5 LZ |
6196 | * |
6197 | * We don't have the associated upstream bridge while assigning | |
6198 | * the PCI device into guest. For example, the KVM on power is | |
6199 | * one of the cases. | |
005cbdfc AD |
6200 | */ |
6201 | if (adapter->flags & FLAG_IS_QUAD_PORT) { | |
6202 | struct pci_dev *us_dev = pdev->bus->self; | |
005cbdfc AD |
6203 | u16 devctl; |
6204 | ||
e8c254c5 LZ |
6205 | if (!us_dev) |
6206 | return 0; | |
6207 | ||
f8c0fcac JL |
6208 | pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl); |
6209 | pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, | |
6210 | (devctl & ~PCI_EXP_DEVCTL_CERE)); | |
005cbdfc | 6211 | |
66148bab KK |
6212 | pci_save_state(pdev); |
6213 | pci_prepare_to_sleep(pdev); | |
005cbdfc | 6214 | |
f8c0fcac | 6215 | pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl); |
005cbdfc | 6216 | } |
66148bab KK |
6217 | |
6218 | return 0; | |
bc7f75fa AK |
6219 | } |
6220 | ||
13129d9b CW |
6221 | /** |
6222 | * e1000e_disable_aspm - Disable ASPM states | |
6223 | * @pdev: pointer to PCI device struct | |
6224 | * @state: bit-mask of ASPM states to disable | |
6225 | * | |
6226 | * Some devices *must* have certain ASPM states disabled per hardware errata. | |
6227 | **/ | |
6228 | static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) | |
6f461f6c | 6229 | { |
13129d9b CW |
6230 | struct pci_dev *parent = pdev->bus->self; |
6231 | u16 aspm_dis_mask = 0; | |
6232 | u16 pdev_aspmc, parent_aspmc; | |
6233 | ||
6234 | switch (state) { | |
6235 | case PCIE_LINK_STATE_L0S: | |
6236 | case PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1: | |
6237 | aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L0S; | |
6238 | /* fall-through - can't have L1 without L0s */ | |
6239 | case PCIE_LINK_STATE_L1: | |
6240 | aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L1; | |
6241 | break; | |
6242 | default: | |
6243 | return; | |
6244 | } | |
6245 | ||
6246 | pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc); | |
6247 | pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC; | |
6248 | ||
6249 | if (parent) { | |
6250 | pcie_capability_read_word(parent, PCI_EXP_LNKCTL, | |
6251 | &parent_aspmc); | |
6252 | parent_aspmc &= PCI_EXP_LNKCTL_ASPMC; | |
6253 | } | |
6254 | ||
6255 | /* Nothing to do if the ASPM states to be disabled already are */ | |
6256 | if (!(pdev_aspmc & aspm_dis_mask) && | |
6257 | (!parent || !(parent_aspmc & aspm_dis_mask))) | |
6258 | return; | |
6259 | ||
6260 | dev_info(&pdev->dev, "Disabling ASPM %s %s\n", | |
6261 | (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L0S) ? | |
6262 | "L0s" : "", | |
6263 | (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L1) ? | |
6264 | "L1" : ""); | |
6265 | ||
6266 | #ifdef CONFIG_PCIEASPM | |
9f728f53 | 6267 | pci_disable_link_state_locked(pdev, state); |
ffe0b2ff | 6268 | |
13129d9b CW |
6269 | /* Double-check ASPM control. If not disabled by the above, the |
6270 | * BIOS is preventing that from happening (or CONFIG_PCIEASPM is | |
6271 | * not enabled); override by writing PCI config space directly. | |
6272 | */ | |
6273 | pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc); | |
6274 | pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC; | |
6275 | ||
6276 | if (!(aspm_dis_mask & pdev_aspmc)) | |
6277 | return; | |
6278 | #endif | |
ffe0b2ff | 6279 | |
e921eb1a | 6280 | /* Both device and parent should have the same ASPM setting. |
6f461f6c | 6281 | * Disable ASPM in downstream component first and then upstream. |
1eae4eb2 | 6282 | */ |
13129d9b | 6283 | pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, aspm_dis_mask); |
6f461f6c | 6284 | |
13129d9b CW |
6285 | if (parent) |
6286 | pcie_capability_clear_word(parent, PCI_EXP_LNKCTL, | |
6287 | aspm_dis_mask); | |
1eae4eb2 AK |
6288 | } |
6289 | ||
aa338601 | 6290 | #ifdef CONFIG_PM |
23606cf5 | 6291 | static int __e1000_resume(struct pci_dev *pdev) |
bc7f75fa AK |
6292 | { |
6293 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6294 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6295 | struct e1000_hw *hw = &adapter->hw; | |
78cd29d5 | 6296 | u16 aspm_disable_flag = 0; |
bc7f75fa | 6297 | |
78cd29d5 BA |
6298 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
6299 | aspm_disable_flag = PCIE_LINK_STATE_L0S; | |
6300 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) | |
6301 | aspm_disable_flag |= PCIE_LINK_STATE_L1; | |
6302 | if (aspm_disable_flag) | |
6303 | e1000e_disable_aspm(pdev, aspm_disable_flag); | |
6304 | ||
66148bab | 6305 | pci_set_master(pdev); |
6e4f6f6b | 6306 | |
2fbe4526 | 6307 | if (hw->mac.type >= e1000_pch2lan) |
99730e4c BA |
6308 | e1000_resume_workarounds_pchlan(&adapter->hw); |
6309 | ||
bc7f75fa | 6310 | e1000e_power_up_phy(adapter); |
a4f58f54 BA |
6311 | |
6312 | /* report the system wakeup cause from S3/S4 */ | |
6313 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { | |
6314 | u16 phy_data; | |
6315 | ||
6316 | e1e_rphy(&adapter->hw, BM_WUS, &phy_data); | |
6317 | if (phy_data) { | |
6318 | e_info("PHY Wakeup cause - %s\n", | |
17e813ec BA |
6319 | phy_data & E1000_WUS_EX ? "Unicast Packet" : |
6320 | phy_data & E1000_WUS_MC ? "Multicast Packet" : | |
6321 | phy_data & E1000_WUS_BC ? "Broadcast Packet" : | |
6322 | phy_data & E1000_WUS_MAG ? "Magic Packet" : | |
6323 | phy_data & E1000_WUS_LNKC ? | |
6324 | "Link Status Change" : "other"); | |
a4f58f54 BA |
6325 | } |
6326 | e1e_wphy(&adapter->hw, BM_WUS, ~0); | |
6327 | } else { | |
6328 | u32 wus = er32(WUS); | |
6cf08d1c | 6329 | |
a4f58f54 BA |
6330 | if (wus) { |
6331 | e_info("MAC Wakeup cause - %s\n", | |
17e813ec BA |
6332 | wus & E1000_WUS_EX ? "Unicast Packet" : |
6333 | wus & E1000_WUS_MC ? "Multicast Packet" : | |
6334 | wus & E1000_WUS_BC ? "Broadcast Packet" : | |
6335 | wus & E1000_WUS_MAG ? "Magic Packet" : | |
6336 | wus & E1000_WUS_LNKC ? "Link Status Change" : | |
6337 | "other"); | |
a4f58f54 BA |
6338 | } |
6339 | ew32(WUS, ~0); | |
6340 | } | |
6341 | ||
bc7f75fa | 6342 | e1000e_reset(adapter); |
bc7f75fa | 6343 | |
cd791618 | 6344 | e1000_init_manageability_pt(adapter); |
bc7f75fa | 6345 | |
e921eb1a | 6346 | /* If the controller has AMT, do not set DRV_LOAD until the interface |
bc7f75fa | 6347 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
6348 | * under the control of the driver. |
6349 | */ | |
c43bc57e | 6350 | if (!(adapter->flags & FLAG_HAS_AMT)) |
31dbe5b4 | 6351 | e1000e_get_hw_control(adapter); |
bc7f75fa AK |
6352 | |
6353 | return 0; | |
6354 | } | |
23606cf5 | 6355 | |
3e7986f6 | 6356 | #ifdef CONFIG_PM_SLEEP |
28002099 DE |
6357 | static int e1000e_pm_thaw(struct device *dev) |
6358 | { | |
6359 | struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); | |
6360 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6361 | ||
6362 | e1000e_set_interrupt_capability(adapter); | |
6363 | if (netif_running(netdev)) { | |
6364 | u32 err = e1000_request_irq(adapter); | |
6365 | ||
6366 | if (err) | |
6367 | return err; | |
6368 | ||
6369 | e1000e_up(adapter); | |
6370 | } | |
6371 | ||
6372 | netif_device_attach(netdev); | |
6373 | ||
6374 | return 0; | |
6375 | } | |
6376 | ||
28002099 | 6377 | static int e1000e_pm_suspend(struct device *dev) |
a0340162 RW |
6378 | { |
6379 | struct pci_dev *pdev = to_pci_dev(dev); | |
a0340162 | 6380 | |
2a7e19af DE |
6381 | e1000e_flush_lpic(pdev); |
6382 | ||
28002099 DE |
6383 | e1000e_pm_freeze(dev); |
6384 | ||
66148bab | 6385 | return __e1000_shutdown(pdev, false); |
a0340162 RW |
6386 | } |
6387 | ||
28002099 | 6388 | static int e1000e_pm_resume(struct device *dev) |
23606cf5 RW |
6389 | { |
6390 | struct pci_dev *pdev = to_pci_dev(dev); | |
28002099 | 6391 | int rc; |
23606cf5 | 6392 | |
28002099 DE |
6393 | rc = __e1000_resume(pdev); |
6394 | if (rc) | |
6395 | return rc; | |
23606cf5 | 6396 | |
28002099 | 6397 | return e1000e_pm_thaw(dev); |
23606cf5 | 6398 | } |
38a529b5 | 6399 | #endif /* CONFIG_PM_SLEEP */ |
a0340162 | 6400 | |
63eb48f1 | 6401 | static int e1000e_pm_runtime_idle(struct device *dev) |
a0340162 RW |
6402 | { |
6403 | struct pci_dev *pdev = to_pci_dev(dev); | |
6404 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6405 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2116bc25 | 6406 | u16 eee_lp; |
a0340162 | 6407 | |
2116bc25 DE |
6408 | eee_lp = adapter->hw.dev_spec.ich8lan.eee_lp_ability; |
6409 | ||
6410 | if (!e1000e_has_link(adapter)) { | |
6411 | adapter->hw.dev_spec.ich8lan.eee_lp_ability = eee_lp; | |
63eb48f1 | 6412 | pm_schedule_suspend(dev, 5 * MSEC_PER_SEC); |
2116bc25 | 6413 | } |
a0340162 | 6414 | |
63eb48f1 | 6415 | return -EBUSY; |
a0340162 RW |
6416 | } |
6417 | ||
63eb48f1 | 6418 | static int e1000e_pm_runtime_resume(struct device *dev) |
a0340162 RW |
6419 | { |
6420 | struct pci_dev *pdev = to_pci_dev(dev); | |
6421 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6422 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
63eb48f1 | 6423 | int rc; |
a0340162 | 6424 | |
63eb48f1 DE |
6425 | rc = __e1000_resume(pdev); |
6426 | if (rc) | |
6427 | return rc; | |
a0340162 | 6428 | |
63eb48f1 DE |
6429 | if (netdev->flags & IFF_UP) |
6430 | rc = e1000e_up(adapter); | |
a0340162 | 6431 | |
63eb48f1 | 6432 | return rc; |
a0340162 | 6433 | } |
23606cf5 | 6434 | |
63eb48f1 | 6435 | static int e1000e_pm_runtime_suspend(struct device *dev) |
23606cf5 RW |
6436 | { |
6437 | struct pci_dev *pdev = to_pci_dev(dev); | |
6438 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6439 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6440 | ||
63eb48f1 DE |
6441 | if (netdev->flags & IFF_UP) { |
6442 | int count = E1000_CHECK_RESET_COUNT; | |
6443 | ||
6444 | while (test_bit(__E1000_RESETTING, &adapter->state) && count--) | |
6445 | usleep_range(10000, 20000); | |
23606cf5 | 6446 | |
63eb48f1 DE |
6447 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
6448 | ||
6449 | /* Down the device without resetting the hardware */ | |
6450 | e1000e_down(adapter, false); | |
6451 | } | |
6452 | ||
6453 | if (__e1000_shutdown(pdev, true)) { | |
6454 | e1000e_pm_runtime_resume(dev); | |
6455 | return -EBUSY; | |
6456 | } | |
6457 | ||
6458 | return 0; | |
23606cf5 | 6459 | } |
aa338601 | 6460 | #endif /* CONFIG_PM */ |
bc7f75fa AK |
6461 | |
6462 | static void e1000_shutdown(struct pci_dev *pdev) | |
6463 | { | |
2a7e19af DE |
6464 | e1000e_flush_lpic(pdev); |
6465 | ||
28002099 DE |
6466 | e1000e_pm_freeze(&pdev->dev); |
6467 | ||
66148bab | 6468 | __e1000_shutdown(pdev, false); |
bc7f75fa AK |
6469 | } |
6470 | ||
6471 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
147b2c8c | 6472 | |
8bb62869 | 6473 | static irqreturn_t e1000_intr_msix(int __always_unused irq, void *data) |
147b2c8c DD |
6474 | { |
6475 | struct net_device *netdev = data; | |
6476 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
147b2c8c DD |
6477 | |
6478 | if (adapter->msix_entries) { | |
90da0669 BA |
6479 | int vector, msix_irq; |
6480 | ||
147b2c8c DD |
6481 | vector = 0; |
6482 | msix_irq = adapter->msix_entries[vector].vector; | |
6483 | disable_irq(msix_irq); | |
6484 | e1000_intr_msix_rx(msix_irq, netdev); | |
6485 | enable_irq(msix_irq); | |
6486 | ||
6487 | vector++; | |
6488 | msix_irq = adapter->msix_entries[vector].vector; | |
6489 | disable_irq(msix_irq); | |
6490 | e1000_intr_msix_tx(msix_irq, netdev); | |
6491 | enable_irq(msix_irq); | |
6492 | ||
6493 | vector++; | |
6494 | msix_irq = adapter->msix_entries[vector].vector; | |
6495 | disable_irq(msix_irq); | |
6496 | e1000_msix_other(msix_irq, netdev); | |
6497 | enable_irq(msix_irq); | |
6498 | } | |
6499 | ||
6500 | return IRQ_HANDLED; | |
6501 | } | |
6502 | ||
e921eb1a BA |
6503 | /** |
6504 | * e1000_netpoll | |
6505 | * @netdev: network interface device structure | |
6506 | * | |
bc7f75fa AK |
6507 | * Polling 'interrupt' - used by things like netconsole to send skbs |
6508 | * without having to re-enable interrupts. It's not called while | |
6509 | * the interrupt routine is executing. | |
6510 | */ | |
6511 | static void e1000_netpoll(struct net_device *netdev) | |
6512 | { | |
6513 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6514 | ||
147b2c8c DD |
6515 | switch (adapter->int_mode) { |
6516 | case E1000E_INT_MODE_MSIX: | |
6517 | e1000_intr_msix(adapter->pdev->irq, netdev); | |
6518 | break; | |
6519 | case E1000E_INT_MODE_MSI: | |
6520 | disable_irq(adapter->pdev->irq); | |
6521 | e1000_intr_msi(adapter->pdev->irq, netdev); | |
6522 | enable_irq(adapter->pdev->irq); | |
6523 | break; | |
e80bd1d1 | 6524 | default: /* E1000E_INT_MODE_LEGACY */ |
147b2c8c DD |
6525 | disable_irq(adapter->pdev->irq); |
6526 | e1000_intr(adapter->pdev->irq, netdev); | |
6527 | enable_irq(adapter->pdev->irq); | |
6528 | break; | |
6529 | } | |
bc7f75fa AK |
6530 | } |
6531 | #endif | |
6532 | ||
6533 | /** | |
6534 | * e1000_io_error_detected - called when PCI error is detected | |
6535 | * @pdev: Pointer to PCI device | |
6536 | * @state: The current pci connection state | |
6537 | * | |
6538 | * This function is called after a PCI bus error affecting | |
6539 | * this device has been detected. | |
6540 | */ | |
6541 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, | |
6542 | pci_channel_state_t state) | |
6543 | { | |
6544 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6545 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6546 | ||
6547 | netif_device_detach(netdev); | |
6548 | ||
c93b5a76 MM |
6549 | if (state == pci_channel_io_perm_failure) |
6550 | return PCI_ERS_RESULT_DISCONNECT; | |
6551 | ||
bc7f75fa | 6552 | if (netif_running(netdev)) |
28002099 | 6553 | e1000e_down(adapter, true); |
bc7f75fa AK |
6554 | pci_disable_device(pdev); |
6555 | ||
6556 | /* Request a slot slot reset. */ | |
6557 | return PCI_ERS_RESULT_NEED_RESET; | |
6558 | } | |
6559 | ||
6560 | /** | |
6561 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
6562 | * @pdev: Pointer to PCI device | |
6563 | * | |
6564 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
28002099 | 6565 | * resembles the first-half of the e1000e_pm_resume routine. |
bc7f75fa AK |
6566 | */ |
6567 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
6568 | { | |
6569 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6570 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6571 | struct e1000_hw *hw = &adapter->hw; | |
78cd29d5 | 6572 | u16 aspm_disable_flag = 0; |
6e4f6f6b | 6573 | int err; |
111b9dc5 | 6574 | pci_ers_result_t result; |
bc7f75fa | 6575 | |
78cd29d5 BA |
6576 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
6577 | aspm_disable_flag = PCIE_LINK_STATE_L0S; | |
6f461f6c | 6578 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
78cd29d5 BA |
6579 | aspm_disable_flag |= PCIE_LINK_STATE_L1; |
6580 | if (aspm_disable_flag) | |
6581 | e1000e_disable_aspm(pdev, aspm_disable_flag); | |
6582 | ||
f0f422e5 | 6583 | err = pci_enable_device_mem(pdev); |
6e4f6f6b | 6584 | if (err) { |
bc7f75fa AK |
6585 | dev_err(&pdev->dev, |
6586 | "Cannot re-enable PCI device after reset.\n"); | |
111b9dc5 JB |
6587 | result = PCI_ERS_RESULT_DISCONNECT; |
6588 | } else { | |
23606cf5 | 6589 | pdev->state_saved = true; |
111b9dc5 | 6590 | pci_restore_state(pdev); |
66148bab | 6591 | pci_set_master(pdev); |
bc7f75fa | 6592 | |
111b9dc5 JB |
6593 | pci_enable_wake(pdev, PCI_D3hot, 0); |
6594 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
bc7f75fa | 6595 | |
111b9dc5 JB |
6596 | e1000e_reset(adapter); |
6597 | ew32(WUS, ~0); | |
6598 | result = PCI_ERS_RESULT_RECOVERED; | |
6599 | } | |
bc7f75fa | 6600 | |
111b9dc5 JB |
6601 | pci_cleanup_aer_uncorrect_error_status(pdev); |
6602 | ||
6603 | return result; | |
bc7f75fa AK |
6604 | } |
6605 | ||
6606 | /** | |
6607 | * e1000_io_resume - called when traffic can start flowing again. | |
6608 | * @pdev: Pointer to PCI device | |
6609 | * | |
6610 | * This callback is called when the error recovery driver tells us that | |
6611 | * its OK to resume normal operation. Implementation resembles the | |
28002099 | 6612 | * second-half of the e1000e_pm_resume routine. |
bc7f75fa AK |
6613 | */ |
6614 | static void e1000_io_resume(struct pci_dev *pdev) | |
6615 | { | |
6616 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6617 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6618 | ||
cd791618 | 6619 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
6620 | |
6621 | if (netif_running(netdev)) { | |
6622 | if (e1000e_up(adapter)) { | |
6623 | dev_err(&pdev->dev, | |
6624 | "can't bring device back up after reset\n"); | |
6625 | return; | |
6626 | } | |
6627 | } | |
6628 | ||
6629 | netif_device_attach(netdev); | |
6630 | ||
e921eb1a | 6631 | /* If the controller has AMT, do not set DRV_LOAD until the interface |
bc7f75fa | 6632 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
6633 | * under the control of the driver. |
6634 | */ | |
c43bc57e | 6635 | if (!(adapter->flags & FLAG_HAS_AMT)) |
31dbe5b4 | 6636 | e1000e_get_hw_control(adapter); |
bc7f75fa AK |
6637 | } |
6638 | ||
6639 | static void e1000_print_device_info(struct e1000_adapter *adapter) | |
6640 | { | |
6641 | struct e1000_hw *hw = &adapter->hw; | |
6642 | struct net_device *netdev = adapter->netdev; | |
073287c0 BA |
6643 | u32 ret_val; |
6644 | u8 pba_str[E1000_PBANUM_LENGTH]; | |
bc7f75fa AK |
6645 | |
6646 | /* print bus type/speed/width info */ | |
a5cc7642 | 6647 | e_info("(PCI Express:2.5GT/s:%s) %pM\n", |
44defeb3 JK |
6648 | /* bus width */ |
6649 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : | |
f0ff4398 | 6650 | "Width x1"), |
44defeb3 | 6651 | /* MAC address */ |
7c510e4b | 6652 | netdev->dev_addr); |
44defeb3 JK |
6653 | e_info("Intel(R) PRO/%s Network Connection\n", |
6654 | (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); | |
073287c0 BA |
6655 | ret_val = e1000_read_pba_string_generic(hw, pba_str, |
6656 | E1000_PBANUM_LENGTH); | |
6657 | if (ret_val) | |
f2315bf1 | 6658 | strlcpy((char *)pba_str, "Unknown", sizeof(pba_str)); |
073287c0 BA |
6659 | e_info("MAC: %d, PHY: %d, PBA No: %s\n", |
6660 | hw->mac.type, hw->phy.type, pba_str); | |
bc7f75fa AK |
6661 | } |
6662 | ||
10aa4c04 AK |
6663 | static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
6664 | { | |
6665 | struct e1000_hw *hw = &adapter->hw; | |
6666 | int ret_val; | |
6667 | u16 buf = 0; | |
6668 | ||
6669 | if (hw->mac.type != e1000_82573) | |
6670 | return; | |
6671 | ||
6672 | ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); | |
e885d762 BA |
6673 | le16_to_cpus(&buf); |
6674 | if (!ret_val && (!(buf & (1 << 0)))) { | |
10aa4c04 | 6675 | /* Deep Smart Power Down (DSPD) */ |
6c2a9efa FP |
6676 | dev_warn(&adapter->pdev->dev, |
6677 | "Warning: detected DSPD enabled in EEPROM\n"); | |
10aa4c04 | 6678 | } |
10aa4c04 AK |
6679 | } |
6680 | ||
c8f44aff | 6681 | static int e1000_set_features(struct net_device *netdev, |
70495a50 | 6682 | netdev_features_t features) |
dc221294 BA |
6683 | { |
6684 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
c8f44aff | 6685 | netdev_features_t changed = features ^ netdev->features; |
dc221294 BA |
6686 | |
6687 | if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) | |
6688 | adapter->flags |= FLAG_TSO_FORCE; | |
6689 | ||
f646968f | 6690 | if (!(changed & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX | |
cf955e6c BG |
6691 | NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS | |
6692 | NETIF_F_RXALL))) | |
dc221294 BA |
6693 | return 0; |
6694 | ||
0184039a BG |
6695 | if (changed & NETIF_F_RXFCS) { |
6696 | if (features & NETIF_F_RXFCS) { | |
6697 | adapter->flags2 &= ~FLAG2_CRC_STRIPPING; | |
6698 | } else { | |
6699 | /* We need to take it back to defaults, which might mean | |
6700 | * stripping is still disabled at the adapter level. | |
6701 | */ | |
6702 | if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING) | |
6703 | adapter->flags2 |= FLAG2_CRC_STRIPPING; | |
6704 | else | |
6705 | adapter->flags2 &= ~FLAG2_CRC_STRIPPING; | |
6706 | } | |
6707 | } | |
6708 | ||
70495a50 BA |
6709 | netdev->features = features; |
6710 | ||
dc221294 BA |
6711 | if (netif_running(netdev)) |
6712 | e1000e_reinit_locked(adapter); | |
6713 | else | |
6714 | e1000e_reset(adapter); | |
6715 | ||
6716 | return 0; | |
6717 | } | |
6718 | ||
651c2466 SH |
6719 | static const struct net_device_ops e1000e_netdev_ops = { |
6720 | .ndo_open = e1000_open, | |
6721 | .ndo_stop = e1000_close, | |
00829823 | 6722 | .ndo_start_xmit = e1000_xmit_frame, |
67fd4fcb | 6723 | .ndo_get_stats64 = e1000e_get_stats64, |
ef9b965a | 6724 | .ndo_set_rx_mode = e1000e_set_rx_mode, |
651c2466 SH |
6725 | .ndo_set_mac_address = e1000_set_mac, |
6726 | .ndo_change_mtu = e1000_change_mtu, | |
6727 | .ndo_do_ioctl = e1000_ioctl, | |
6728 | .ndo_tx_timeout = e1000_tx_timeout, | |
6729 | .ndo_validate_addr = eth_validate_addr, | |
6730 | ||
651c2466 SH |
6731 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
6732 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
6733 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
6734 | .ndo_poll_controller = e1000_netpoll, | |
6735 | #endif | |
dc221294 | 6736 | .ndo_set_features = e1000_set_features, |
651c2466 SH |
6737 | }; |
6738 | ||
bc7f75fa AK |
6739 | /** |
6740 | * e1000_probe - Device Initialization Routine | |
6741 | * @pdev: PCI device information struct | |
6742 | * @ent: entry in e1000_pci_tbl | |
6743 | * | |
6744 | * Returns 0 on success, negative on failure | |
6745 | * | |
6746 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
6747 | * The OS initialization, configuring of the adapter private structure, | |
6748 | * and a hardware reset occur. | |
6749 | **/ | |
1dd06ae8 | 6750 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
bc7f75fa AK |
6751 | { |
6752 | struct net_device *netdev; | |
6753 | struct e1000_adapter *adapter; | |
6754 | struct e1000_hw *hw; | |
6755 | const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; | |
f47e81fc BB |
6756 | resource_size_t mmio_start, mmio_len; |
6757 | resource_size_t flash_start, flash_len; | |
bc7f75fa | 6758 | static int cards_found; |
78cd29d5 | 6759 | u16 aspm_disable_flag = 0; |
17e813ec | 6760 | int bars, i, err, pci_using_dac; |
bc7f75fa AK |
6761 | u16 eeprom_data = 0; |
6762 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
491a04d2 | 6763 | s32 rval = 0; |
bc7f75fa | 6764 | |
78cd29d5 BA |
6765 | if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S) |
6766 | aspm_disable_flag = PCIE_LINK_STATE_L0S; | |
6f461f6c | 6767 | if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
78cd29d5 BA |
6768 | aspm_disable_flag |= PCIE_LINK_STATE_L1; |
6769 | if (aspm_disable_flag) | |
6770 | e1000e_disable_aspm(pdev, aspm_disable_flag); | |
6e4f6f6b | 6771 | |
f0f422e5 | 6772 | err = pci_enable_device_mem(pdev); |
bc7f75fa AK |
6773 | if (err) |
6774 | return err; | |
6775 | ||
6776 | pci_using_dac = 0; | |
718a39eb | 6777 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
bc7f75fa | 6778 | if (!err) { |
718a39eb | 6779 | pci_using_dac = 1; |
bc7f75fa | 6780 | } else { |
718a39eb | 6781 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
bc7f75fa | 6782 | if (err) { |
718a39eb RK |
6783 | dev_err(&pdev->dev, |
6784 | "No usable DMA configuration, aborting\n"); | |
6785 | goto err_dma; | |
bc7f75fa AK |
6786 | } |
6787 | } | |
6788 | ||
17e813ec BA |
6789 | bars = pci_select_bars(pdev, IORESOURCE_MEM); |
6790 | err = pci_request_selected_regions_exclusive(pdev, bars, | |
6791 | e1000e_driver_name); | |
bc7f75fa AK |
6792 | if (err) |
6793 | goto err_pci_reg; | |
6794 | ||
68eac460 | 6795 | /* AER (Advanced Error Reporting) hooks */ |
19d5afd4 | 6796 | pci_enable_pcie_error_reporting(pdev); |
68eac460 | 6797 | |
bc7f75fa | 6798 | pci_set_master(pdev); |
438b365a BA |
6799 | /* PCI config space info */ |
6800 | err = pci_save_state(pdev); | |
6801 | if (err) | |
6802 | goto err_alloc_etherdev; | |
bc7f75fa AK |
6803 | |
6804 | err = -ENOMEM; | |
6805 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
6806 | if (!netdev) | |
6807 | goto err_alloc_etherdev; | |
6808 | ||
bc7f75fa AK |
6809 | SET_NETDEV_DEV(netdev, &pdev->dev); |
6810 | ||
f85e4dfa TH |
6811 | netdev->irq = pdev->irq; |
6812 | ||
bc7f75fa AK |
6813 | pci_set_drvdata(pdev, netdev); |
6814 | adapter = netdev_priv(netdev); | |
6815 | hw = &adapter->hw; | |
6816 | adapter->netdev = netdev; | |
6817 | adapter->pdev = pdev; | |
6818 | adapter->ei = ei; | |
6819 | adapter->pba = ei->pba; | |
6820 | adapter->flags = ei->flags; | |
eb7c3adb | 6821 | adapter->flags2 = ei->flags2; |
bc7f75fa AK |
6822 | adapter->hw.adapter = adapter; |
6823 | adapter->hw.mac.type = ei->mac; | |
2adc55c9 | 6824 | adapter->max_hw_frame_size = ei->max_hw_frame_size; |
b3f4d599 | 6825 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
bc7f75fa AK |
6826 | |
6827 | mmio_start = pci_resource_start(pdev, 0); | |
6828 | mmio_len = pci_resource_len(pdev, 0); | |
6829 | ||
6830 | err = -EIO; | |
6831 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
6832 | if (!adapter->hw.hw_addr) | |
6833 | goto err_ioremap; | |
6834 | ||
6835 | if ((adapter->flags & FLAG_HAS_FLASH) && | |
6836 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
6837 | flash_start = pci_resource_start(pdev, 1); | |
6838 | flash_len = pci_resource_len(pdev, 1); | |
6839 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
6840 | if (!adapter->hw.flash_address) | |
6841 | goto err_flashmap; | |
6842 | } | |
6843 | ||
d495bcb8 BA |
6844 | /* Set default EEE advertisement */ |
6845 | if (adapter->flags2 & FLAG2_HAS_EEE) | |
6846 | adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T; | |
6847 | ||
bc7f75fa | 6848 | /* construct the net_device struct */ |
e80bd1d1 | 6849 | netdev->netdev_ops = &e1000e_netdev_ops; |
bc7f75fa | 6850 | e1000e_set_ethtool_ops(netdev); |
e80bd1d1 | 6851 | netdev->watchdog_timeo = 5 * HZ; |
c58c8a78 | 6852 | netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64); |
f2315bf1 | 6853 | strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); |
bc7f75fa AK |
6854 | |
6855 | netdev->mem_start = mmio_start; | |
6856 | netdev->mem_end = mmio_start + mmio_len; | |
6857 | ||
6858 | adapter->bd_number = cards_found++; | |
6859 | ||
4662e82b BA |
6860 | e1000e_check_options(adapter); |
6861 | ||
bc7f75fa AK |
6862 | /* setup adapter struct */ |
6863 | err = e1000_sw_init(adapter); | |
6864 | if (err) | |
6865 | goto err_sw_init; | |
6866 | ||
bc7f75fa AK |
6867 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
6868 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
6869 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
6870 | ||
69e3fd8c | 6871 | err = ei->get_variants(adapter); |
bc7f75fa AK |
6872 | if (err) |
6873 | goto err_hw_init; | |
6874 | ||
4a770358 BA |
6875 | if ((adapter->flags & FLAG_IS_ICH) && |
6876 | (adapter->flags & FLAG_READ_ONLY_NVM)) | |
6877 | e1000e_write_protect_nvm_ich8lan(&adapter->hw); | |
6878 | ||
bc7f75fa AK |
6879 | hw->mac.ops.get_bus_info(&adapter->hw); |
6880 | ||
318a94d6 | 6881 | adapter->hw.phy.autoneg_wait_to_complete = 0; |
bc7f75fa AK |
6882 | |
6883 | /* Copper options */ | |
318a94d6 | 6884 | if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
bc7f75fa AK |
6885 | adapter->hw.phy.mdix = AUTO_ALL_MODES; |
6886 | adapter->hw.phy.disable_polarity_correction = 0; | |
6887 | adapter->hw.phy.ms_type = e1000_ms_hw_default; | |
6888 | } | |
6889 | ||
470a5420 | 6890 | if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw)) |
185095fb BA |
6891 | dev_info(&pdev->dev, |
6892 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
bc7f75fa | 6893 | |
dc221294 BA |
6894 | /* Set initial default active device features */ |
6895 | netdev->features = (NETIF_F_SG | | |
f646968f PM |
6896 | NETIF_F_HW_VLAN_CTAG_RX | |
6897 | NETIF_F_HW_VLAN_CTAG_TX | | |
dc221294 BA |
6898 | NETIF_F_TSO | |
6899 | NETIF_F_TSO6 | | |
70495a50 | 6900 | NETIF_F_RXHASH | |
dc221294 BA |
6901 | NETIF_F_RXCSUM | |
6902 | NETIF_F_HW_CSUM); | |
6903 | ||
6904 | /* Set user-changeable features (subset of all device features) */ | |
6905 | netdev->hw_features = netdev->features; | |
0184039a | 6906 | netdev->hw_features |= NETIF_F_RXFCS; |
943146de | 6907 | netdev->priv_flags |= IFF_SUPP_NOFCS; |
cf955e6c | 6908 | netdev->hw_features |= NETIF_F_RXALL; |
bc7f75fa AK |
6909 | |
6910 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) | |
f646968f | 6911 | netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
bc7f75fa | 6912 | |
dc221294 BA |
6913 | netdev->vlan_features |= (NETIF_F_SG | |
6914 | NETIF_F_TSO | | |
6915 | NETIF_F_TSO6 | | |
6916 | NETIF_F_HW_CSUM); | |
a5136e23 | 6917 | |
ef9b965a JB |
6918 | netdev->priv_flags |= IFF_UNICAST_FLT; |
6919 | ||
7b872a55 | 6920 | if (pci_using_dac) { |
bc7f75fa | 6921 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
6922 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
6923 | } | |
bc7f75fa | 6924 | |
bc7f75fa AK |
6925 | if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
6926 | adapter->flags |= FLAG_MNG_PT_ENABLED; | |
6927 | ||
e921eb1a | 6928 | /* before reading the NVM, reset the controller to |
ad68076e BA |
6929 | * put the device in a known good starting state |
6930 | */ | |
bc7f75fa AK |
6931 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
6932 | ||
e921eb1a | 6933 | /* systems with ASPM and others may see the checksum fail on the first |
bc7f75fa AK |
6934 | * attempt. Let's give it a few tries |
6935 | */ | |
6936 | for (i = 0;; i++) { | |
6937 | if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) | |
6938 | break; | |
6939 | if (i == 2) { | |
185095fb | 6940 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
bc7f75fa AK |
6941 | err = -EIO; |
6942 | goto err_eeprom; | |
6943 | } | |
6944 | } | |
6945 | ||
10aa4c04 AK |
6946 | e1000_eeprom_checks(adapter); |
6947 | ||
608f8a0d | 6948 | /* copy the MAC address */ |
bc7f75fa | 6949 | if (e1000e_read_mac_addr(&adapter->hw)) |
185095fb BA |
6950 | dev_err(&pdev->dev, |
6951 | "NVM Read Error while reading MAC address\n"); | |
bc7f75fa AK |
6952 | |
6953 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
bc7f75fa | 6954 | |
aaeb6cdf | 6955 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
185095fb | 6956 | dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", |
aaeb6cdf | 6957 | netdev->dev_addr); |
bc7f75fa AK |
6958 | err = -EIO; |
6959 | goto err_eeprom; | |
6960 | } | |
6961 | ||
6962 | init_timer(&adapter->watchdog_timer); | |
c061b18d | 6963 | adapter->watchdog_timer.function = e1000_watchdog; |
53aa82da | 6964 | adapter->watchdog_timer.data = (unsigned long)adapter; |
bc7f75fa AK |
6965 | |
6966 | init_timer(&adapter->phy_info_timer); | |
c061b18d | 6967 | adapter->phy_info_timer.function = e1000_update_phy_info; |
53aa82da | 6968 | adapter->phy_info_timer.data = (unsigned long)adapter; |
bc7f75fa AK |
6969 | |
6970 | INIT_WORK(&adapter->reset_task, e1000_reset_task); | |
6971 | INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); | |
a8f88ff5 JB |
6972 | INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
6973 | INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); | |
41cec6f1 | 6974 | INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
bc7f75fa | 6975 | |
bc7f75fa AK |
6976 | /* Initialize link parameters. User can change them with ethtool */ |
6977 | adapter->hw.mac.autoneg = 1; | |
3db1cd5c | 6978 | adapter->fc_autoneg = true; |
5c48ef3e BA |
6979 | adapter->hw.fc.requested_mode = e1000_fc_default; |
6980 | adapter->hw.fc.current_mode = e1000_fc_default; | |
bc7f75fa AK |
6981 | adapter->hw.phy.autoneg_advertised = 0x2f; |
6982 | ||
e921eb1a | 6983 | /* Initial Wake on LAN setting - If APM wake is enabled in |
bc7f75fa AK |
6984 | * the EEPROM, enable the ACPI Magic Packet filter |
6985 | */ | |
6986 | if (adapter->flags & FLAG_APME_IN_WUC) { | |
6987 | /* APME bit in EEPROM is mapped to WUC.APME */ | |
6988 | eeprom_data = er32(WUC); | |
6989 | eeprom_apme_mask = E1000_WUC_APME; | |
4def99bb BA |
6990 | if ((hw->mac.type > e1000_ich10lan) && |
6991 | (eeprom_data & E1000_WUC_PHY_WAKE)) | |
a4f58f54 | 6992 | adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
bc7f75fa AK |
6993 | } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
6994 | if (adapter->flags & FLAG_APME_CHECK_PORT_B && | |
6995 | (adapter->hw.bus.func == 1)) | |
491a04d2 DE |
6996 | rval = e1000_read_nvm(&adapter->hw, |
6997 | NVM_INIT_CONTROL3_PORT_B, | |
6998 | 1, &eeprom_data); | |
bc7f75fa | 6999 | else |
491a04d2 DE |
7000 | rval = e1000_read_nvm(&adapter->hw, |
7001 | NVM_INIT_CONTROL3_PORT_A, | |
7002 | 1, &eeprom_data); | |
bc7f75fa AK |
7003 | } |
7004 | ||
7005 | /* fetch WoL from EEPROM */ | |
491a04d2 DE |
7006 | if (rval) |
7007 | e_dbg("NVM read error getting WoL initial values: %d\n", rval); | |
7008 | else if (eeprom_data & eeprom_apme_mask) | |
bc7f75fa AK |
7009 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
7010 | ||
e921eb1a | 7011 | /* now that we have the eeprom settings, apply the special cases |
bc7f75fa AK |
7012 | * where the eeprom may be wrong or the board simply won't support |
7013 | * wake on lan on a particular port | |
7014 | */ | |
7015 | if (!(adapter->flags & FLAG_HAS_WOL)) | |
7016 | adapter->eeprom_wol = 0; | |
7017 | ||
7018 | /* initialize the wol settings based on the eeprom settings */ | |
7019 | adapter->wol = adapter->eeprom_wol; | |
66148bab KK |
7020 | |
7021 | /* make sure adapter isn't asleep if manageability is enabled */ | |
7022 | if (adapter->wol || (adapter->flags & FLAG_MNG_PT_ENABLED) || | |
7023 | (hw->mac.ops.check_mng_mode(hw))) | |
7024 | device_wakeup_enable(&pdev->dev); | |
bc7f75fa | 7025 | |
84527590 | 7026 | /* save off EEPROM version number */ |
491a04d2 DE |
7027 | rval = e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); |
7028 | ||
7029 | if (rval) { | |
7030 | e_dbg("NVM read error getting EEPROM version: %d\n", rval); | |
7031 | adapter->eeprom_vers = 0; | |
7032 | } | |
84527590 | 7033 | |
bc7f75fa AK |
7034 | /* reset the hardware with the new settings */ |
7035 | e1000e_reset(adapter); | |
7036 | ||
e921eb1a | 7037 | /* If the controller has AMT, do not set DRV_LOAD until the interface |
bc7f75fa | 7038 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
7039 | * under the control of the driver. |
7040 | */ | |
c43bc57e | 7041 | if (!(adapter->flags & FLAG_HAS_AMT)) |
31dbe5b4 | 7042 | e1000e_get_hw_control(adapter); |
bc7f75fa | 7043 | |
f2315bf1 | 7044 | strlcpy(netdev->name, "eth%d", sizeof(netdev->name)); |
bc7f75fa AK |
7045 | err = register_netdev(netdev); |
7046 | if (err) | |
7047 | goto err_register; | |
7048 | ||
9c563d20 JB |
7049 | /* carrier off reporting is important to ethtool even BEFORE open */ |
7050 | netif_carrier_off(netdev); | |
7051 | ||
d89777bf BA |
7052 | /* init PTP hardware clock */ |
7053 | e1000e_ptp_init(adapter); | |
7054 | ||
bc7f75fa AK |
7055 | e1000_print_device_info(adapter); |
7056 | ||
f3ec4f87 AS |
7057 | if (pci_dev_run_wake(pdev)) |
7058 | pm_runtime_put_noidle(&pdev->dev); | |
23606cf5 | 7059 | |
bc7f75fa AK |
7060 | return 0; |
7061 | ||
7062 | err_register: | |
c43bc57e | 7063 | if (!(adapter->flags & FLAG_HAS_AMT)) |
31dbe5b4 | 7064 | e1000e_release_hw_control(adapter); |
bc7f75fa | 7065 | err_eeprom: |
470a5420 | 7066 | if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw)) |
bc7f75fa | 7067 | e1000_phy_hw_reset(&adapter->hw); |
c43bc57e | 7068 | err_hw_init: |
bc7f75fa AK |
7069 | kfree(adapter->tx_ring); |
7070 | kfree(adapter->rx_ring); | |
7071 | err_sw_init: | |
c43bc57e JB |
7072 | if (adapter->hw.flash_address) |
7073 | iounmap(adapter->hw.flash_address); | |
e82f54ba | 7074 | e1000e_reset_interrupt_capability(adapter); |
c43bc57e | 7075 | err_flashmap: |
bc7f75fa AK |
7076 | iounmap(adapter->hw.hw_addr); |
7077 | err_ioremap: | |
7078 | free_netdev(netdev); | |
7079 | err_alloc_etherdev: | |
f0f422e5 | 7080 | pci_release_selected_regions(pdev, |
f0ff4398 | 7081 | pci_select_bars(pdev, IORESOURCE_MEM)); |
bc7f75fa AK |
7082 | err_pci_reg: |
7083 | err_dma: | |
7084 | pci_disable_device(pdev); | |
7085 | return err; | |
7086 | } | |
7087 | ||
7088 | /** | |
7089 | * e1000_remove - Device Removal Routine | |
7090 | * @pdev: PCI device information struct | |
7091 | * | |
7092 | * e1000_remove is called by the PCI subsystem to alert the driver | |
7093 | * that it should release a PCI device. The could be caused by a | |
7094 | * Hot-Plug event, or because the driver is going to be removed from | |
7095 | * memory. | |
7096 | **/ | |
9f9a12f8 | 7097 | static void e1000_remove(struct pci_dev *pdev) |
bc7f75fa AK |
7098 | { |
7099 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7100 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 RW |
7101 | bool down = test_bit(__E1000_DOWN, &adapter->state); |
7102 | ||
d89777bf BA |
7103 | e1000e_ptp_remove(adapter); |
7104 | ||
e921eb1a | 7105 | /* The timers may be rescheduled, so explicitly disable them |
23f333a2 | 7106 | * from being rescheduled. |
ad68076e | 7107 | */ |
23606cf5 RW |
7108 | if (!down) |
7109 | set_bit(__E1000_DOWN, &adapter->state); | |
bc7f75fa AK |
7110 | del_timer_sync(&adapter->watchdog_timer); |
7111 | del_timer_sync(&adapter->phy_info_timer); | |
7112 | ||
41cec6f1 BA |
7113 | cancel_work_sync(&adapter->reset_task); |
7114 | cancel_work_sync(&adapter->watchdog_task); | |
7115 | cancel_work_sync(&adapter->downshift_task); | |
7116 | cancel_work_sync(&adapter->update_phy_task); | |
7117 | cancel_work_sync(&adapter->print_hang_task); | |
bc7f75fa | 7118 | |
b67e1913 BA |
7119 | if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { |
7120 | cancel_work_sync(&adapter->tx_hwtstamp_work); | |
7121 | if (adapter->tx_hwtstamp_skb) { | |
7122 | dev_kfree_skb_any(adapter->tx_hwtstamp_skb); | |
7123 | adapter->tx_hwtstamp_skb = NULL; | |
7124 | } | |
7125 | } | |
7126 | ||
23606cf5 RW |
7127 | /* Don't lie to e1000_close() down the road. */ |
7128 | if (!down) | |
7129 | clear_bit(__E1000_DOWN, &adapter->state); | |
17f208de BA |
7130 | unregister_netdev(netdev); |
7131 | ||
f3ec4f87 AS |
7132 | if (pci_dev_run_wake(pdev)) |
7133 | pm_runtime_get_noresume(&pdev->dev); | |
23606cf5 | 7134 | |
e921eb1a | 7135 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
ad68076e BA |
7136 | * would have already happened in close and is redundant. |
7137 | */ | |
31dbe5b4 | 7138 | e1000e_release_hw_control(adapter); |
bc7f75fa | 7139 | |
4662e82b | 7140 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
7141 | kfree(adapter->tx_ring); |
7142 | kfree(adapter->rx_ring); | |
7143 | ||
7144 | iounmap(adapter->hw.hw_addr); | |
7145 | if (adapter->hw.flash_address) | |
7146 | iounmap(adapter->hw.flash_address); | |
f0f422e5 | 7147 | pci_release_selected_regions(pdev, |
f0ff4398 | 7148 | pci_select_bars(pdev, IORESOURCE_MEM)); |
bc7f75fa AK |
7149 | |
7150 | free_netdev(netdev); | |
7151 | ||
111b9dc5 | 7152 | /* AER disable */ |
19d5afd4 | 7153 | pci_disable_pcie_error_reporting(pdev); |
111b9dc5 | 7154 | |
bc7f75fa AK |
7155 | pci_disable_device(pdev); |
7156 | } | |
7157 | ||
7158 | /* PCI Error Recovery (ERS) */ | |
3646f0e5 | 7159 | static const struct pci_error_handlers e1000_err_handler = { |
bc7f75fa AK |
7160 | .error_detected = e1000_io_error_detected, |
7161 | .slot_reset = e1000_io_slot_reset, | |
7162 | .resume = e1000_io_resume, | |
7163 | }; | |
7164 | ||
0e8e842b | 7165 | static const struct pci_device_id e1000_pci_tbl[] = { |
bc7f75fa AK |
7166 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
7167 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, | |
7168 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, | |
c29c3ba5 BA |
7169 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), |
7170 | board_82571 }, | |
bc7f75fa AK |
7171 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
7172 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, | |
040babf9 AK |
7173 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
7174 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, | |
7175 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, | |
ad68076e | 7176 | |
bc7f75fa AK |
7177 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
7178 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, | |
7179 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, | |
7180 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, | |
ad68076e | 7181 | |
bc7f75fa AK |
7182 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
7183 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, | |
7184 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, | |
ad68076e | 7185 | |
4662e82b | 7186 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
bef28b11 | 7187 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
8c81c9c3 | 7188 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
4662e82b | 7189 | |
bc7f75fa AK |
7190 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
7191 | board_80003es2lan }, | |
7192 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), | |
7193 | board_80003es2lan }, | |
7194 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), | |
7195 | board_80003es2lan }, | |
7196 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), | |
7197 | board_80003es2lan }, | |
ad68076e | 7198 | |
bc7f75fa AK |
7199 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
7200 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, | |
7201 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, | |
7202 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, | |
7203 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, | |
7204 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, | |
7205 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, | |
9e135a2e | 7206 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
ad68076e | 7207 | |
bc7f75fa AK |
7208 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
7209 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, | |
7210 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, | |
7211 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, | |
7212 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, | |
2f15f9d6 | 7213 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
97ac8cae BA |
7214 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
7215 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, | |
7216 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, | |
7217 | ||
7218 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, | |
7219 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, | |
7220 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, | |
bc7f75fa | 7221 | |
f4187b56 BA |
7222 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
7223 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, | |
10df0b91 | 7224 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
f4187b56 | 7225 | |
a4f58f54 BA |
7226 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
7227 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, | |
7228 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, | |
7229 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, | |
7230 | ||
d3738bb8 BA |
7231 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
7232 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, | |
7233 | ||
2fbe4526 BA |
7234 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt }, |
7235 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt }, | |
16e310ae BA |
7236 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_LM), board_pch_lpt }, |
7237 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_V), board_pch_lpt }, | |
91a3d82f BA |
7238 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM2), board_pch_lpt }, |
7239 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V2), board_pch_lpt }, | |
7240 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM3), board_pch_lpt }, | |
7241 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V3), board_pch_lpt }, | |
79849ebc DE |
7242 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_LM), board_pch_spt }, |
7243 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_V), board_pch_spt }, | |
7244 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_LM2), board_pch_spt }, | |
7245 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_SPT_I219_V2), board_pch_spt }, | |
2fbe4526 | 7246 | |
f36bb6ca | 7247 | { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ |
bc7f75fa AK |
7248 | }; |
7249 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
7250 | ||
23606cf5 | 7251 | static const struct dev_pm_ops e1000_pm_ops = { |
72f72dcc | 7252 | #ifdef CONFIG_PM_SLEEP |
28002099 DE |
7253 | .suspend = e1000e_pm_suspend, |
7254 | .resume = e1000e_pm_resume, | |
7255 | .freeze = e1000e_pm_freeze, | |
7256 | .thaw = e1000e_pm_thaw, | |
7257 | .poweroff = e1000e_pm_suspend, | |
7258 | .restore = e1000e_pm_resume, | |
72f72dcc | 7259 | #endif |
63eb48f1 DE |
7260 | SET_RUNTIME_PM_OPS(e1000e_pm_runtime_suspend, e1000e_pm_runtime_resume, |
7261 | e1000e_pm_runtime_idle) | |
23606cf5 RW |
7262 | }; |
7263 | ||
bc7f75fa AK |
7264 | /* PCI Device API Driver */ |
7265 | static struct pci_driver e1000_driver = { | |
7266 | .name = e1000e_driver_name, | |
7267 | .id_table = e1000_pci_tbl, | |
7268 | .probe = e1000_probe, | |
9f9a12f8 | 7269 | .remove = e1000_remove, |
f36bb6ca BA |
7270 | .driver = { |
7271 | .pm = &e1000_pm_ops, | |
7272 | }, | |
bc7f75fa AK |
7273 | .shutdown = e1000_shutdown, |
7274 | .err_handler = &e1000_err_handler | |
7275 | }; | |
7276 | ||
7277 | /** | |
7278 | * e1000_init_module - Driver Registration Routine | |
7279 | * | |
7280 | * e1000_init_module is the first routine called when the driver is | |
7281 | * loaded. All it does is register with the PCI subsystem. | |
7282 | **/ | |
7283 | static int __init e1000_init_module(void) | |
7284 | { | |
7285 | int ret; | |
6cf08d1c | 7286 | |
8544b9f7 BA |
7287 | pr_info("Intel(R) PRO/1000 Network Driver - %s\n", |
7288 | e1000e_driver_version); | |
e78b80b1 | 7289 | pr_info("Copyright(c) 1999 - 2014 Intel Corporation.\n"); |
bc7f75fa | 7290 | ret = pci_register_driver(&e1000_driver); |
53ec5498 | 7291 | |
bc7f75fa AK |
7292 | return ret; |
7293 | } | |
7294 | module_init(e1000_init_module); | |
7295 | ||
7296 | /** | |
7297 | * e1000_exit_module - Driver Exit Cleanup Routine | |
7298 | * | |
7299 | * e1000_exit_module is called just before the driver is removed | |
7300 | * from memory. | |
7301 | **/ | |
7302 | static void __exit e1000_exit_module(void) | |
7303 | { | |
7304 | pci_unregister_driver(&e1000_driver); | |
7305 | } | |
7306 | module_exit(e1000_exit_module); | |
7307 | ||
bc7f75fa AK |
7308 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
7309 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
7310 | MODULE_LICENSE("GPL"); | |
7311 | MODULE_VERSION(DRV_VERSION); | |
7312 | ||
06c24b91 | 7313 | /* netdev.c */ |