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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, |
bc7f75fa AK |
73 | }; |
74 | ||
84f4ee90 TI |
75 | struct e1000_reg_info { |
76 | u32 ofs; | |
77 | char *name; | |
78 | }; | |
79 | ||
84f4ee90 | 80 | static const struct e1000_reg_info e1000_reg_info_tbl[] = { |
84f4ee90 TI |
81 | /* General Registers */ |
82 | {E1000_CTRL, "CTRL"}, | |
83 | {E1000_STATUS, "STATUS"}, | |
84 | {E1000_CTRL_EXT, "CTRL_EXT"}, | |
85 | ||
86 | /* Interrupt Registers */ | |
87 | {E1000_ICR, "ICR"}, | |
88 | ||
af667a29 | 89 | /* Rx Registers */ |
84f4ee90 | 90 | {E1000_RCTL, "RCTL"}, |
1e36052e BA |
91 | {E1000_RDLEN(0), "RDLEN"}, |
92 | {E1000_RDH(0), "RDH"}, | |
93 | {E1000_RDT(0), "RDT"}, | |
84f4ee90 TI |
94 | {E1000_RDTR, "RDTR"}, |
95 | {E1000_RXDCTL(0), "RXDCTL"}, | |
96 | {E1000_ERT, "ERT"}, | |
1e36052e BA |
97 | {E1000_RDBAL(0), "RDBAL"}, |
98 | {E1000_RDBAH(0), "RDBAH"}, | |
84f4ee90 TI |
99 | {E1000_RDFH, "RDFH"}, |
100 | {E1000_RDFT, "RDFT"}, | |
101 | {E1000_RDFHS, "RDFHS"}, | |
102 | {E1000_RDFTS, "RDFTS"}, | |
103 | {E1000_RDFPC, "RDFPC"}, | |
104 | ||
af667a29 | 105 | /* Tx Registers */ |
84f4ee90 | 106 | {E1000_TCTL, "TCTL"}, |
1e36052e BA |
107 | {E1000_TDBAL(0), "TDBAL"}, |
108 | {E1000_TDBAH(0), "TDBAH"}, | |
109 | {E1000_TDLEN(0), "TDLEN"}, | |
110 | {E1000_TDH(0), "TDH"}, | |
111 | {E1000_TDT(0), "TDT"}, | |
84f4ee90 TI |
112 | {E1000_TIDV, "TIDV"}, |
113 | {E1000_TXDCTL(0), "TXDCTL"}, | |
114 | {E1000_TADV, "TADV"}, | |
115 | {E1000_TARC(0), "TARC"}, | |
116 | {E1000_TDFH, "TDFH"}, | |
117 | {E1000_TDFT, "TDFT"}, | |
118 | {E1000_TDFHS, "TDFHS"}, | |
119 | {E1000_TDFTS, "TDFTS"}, | |
120 | {E1000_TDFPC, "TDFPC"}, | |
121 | ||
122 | /* List Terminator */ | |
f36bb6ca | 123 | {0, NULL} |
84f4ee90 TI |
124 | }; |
125 | ||
e921eb1a | 126 | /** |
84f4ee90 | 127 | * e1000_regdump - register printout routine |
e921eb1a BA |
128 | * @hw: pointer to the HW structure |
129 | * @reginfo: pointer to the register info table | |
130 | **/ | |
84f4ee90 TI |
131 | static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) |
132 | { | |
133 | int n = 0; | |
134 | char rname[16]; | |
135 | u32 regs[8]; | |
136 | ||
137 | switch (reginfo->ofs) { | |
138 | case E1000_RXDCTL(0): | |
139 | for (n = 0; n < 2; n++) | |
140 | regs[n] = __er32(hw, E1000_RXDCTL(n)); | |
141 | break; | |
142 | case E1000_TXDCTL(0): | |
143 | for (n = 0; n < 2; n++) | |
144 | regs[n] = __er32(hw, E1000_TXDCTL(n)); | |
145 | break; | |
146 | case E1000_TARC(0): | |
147 | for (n = 0; n < 2; n++) | |
148 | regs[n] = __er32(hw, E1000_TARC(n)); | |
149 | break; | |
150 | default: | |
ef456f85 JK |
151 | pr_info("%-15s %08x\n", |
152 | reginfo->name, __er32(hw, reginfo->ofs)); | |
84f4ee90 TI |
153 | return; |
154 | } | |
155 | ||
156 | snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); | |
ef456f85 | 157 | pr_info("%-15s %08x %08x\n", rname, regs[0], regs[1]); |
84f4ee90 TI |
158 | } |
159 | ||
f0c5dadf ET |
160 | static void e1000e_dump_ps_pages(struct e1000_adapter *adapter, |
161 | struct e1000_buffer *bi) | |
162 | { | |
163 | int i; | |
164 | struct e1000_ps_page *ps_page; | |
165 | ||
166 | for (i = 0; i < adapter->rx_ps_pages; i++) { | |
167 | ps_page = &bi->ps_pages[i]; | |
168 | ||
169 | if (ps_page->page) { | |
170 | pr_info("packet dump for ps_page %d:\n", i); | |
171 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, | |
172 | 16, 1, page_address(ps_page->page), | |
173 | PAGE_SIZE, true); | |
174 | } | |
175 | } | |
176 | } | |
177 | ||
e921eb1a | 178 | /** |
af667a29 | 179 | * e1000e_dump - Print registers, Tx-ring and Rx-ring |
e921eb1a BA |
180 | * @adapter: board private structure |
181 | **/ | |
84f4ee90 TI |
182 | static void e1000e_dump(struct e1000_adapter *adapter) |
183 | { | |
184 | struct net_device *netdev = adapter->netdev; | |
185 | struct e1000_hw *hw = &adapter->hw; | |
186 | struct e1000_reg_info *reginfo; | |
187 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
188 | struct e1000_tx_desc *tx_desc; | |
af667a29 | 189 | struct my_u0 { |
e885d762 BA |
190 | __le64 a; |
191 | __le64 b; | |
af667a29 | 192 | } *u0; |
84f4ee90 TI |
193 | struct e1000_buffer *buffer_info; |
194 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
195 | union e1000_rx_desc_packet_split *rx_desc_ps; | |
5f450212 | 196 | union e1000_rx_desc_extended *rx_desc; |
af667a29 | 197 | struct my_u1 { |
e885d762 BA |
198 | __le64 a; |
199 | __le64 b; | |
200 | __le64 c; | |
201 | __le64 d; | |
af667a29 | 202 | } *u1; |
84f4ee90 TI |
203 | u32 staterr; |
204 | int i = 0; | |
205 | ||
206 | if (!netif_msg_hw(adapter)) | |
207 | return; | |
208 | ||
209 | /* Print netdevice Info */ | |
210 | if (netdev) { | |
211 | dev_info(&adapter->pdev->dev, "Net device Info\n"); | |
ef456f85 | 212 | pr_info("Device Name state trans_start last_rx\n"); |
e5fe2541 BA |
213 | pr_info("%-15s %016lX %016lX %016lX\n", netdev->name, |
214 | netdev->state, netdev->trans_start, netdev->last_rx); | |
84f4ee90 TI |
215 | } |
216 | ||
217 | /* Print Registers */ | |
218 | dev_info(&adapter->pdev->dev, "Register Dump\n"); | |
ef456f85 | 219 | pr_info(" Register Name Value\n"); |
84f4ee90 TI |
220 | for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; |
221 | reginfo->name; reginfo++) { | |
222 | e1000_regdump(hw, reginfo); | |
223 | } | |
224 | ||
af667a29 | 225 | /* Print Tx Ring Summary */ |
84f4ee90 | 226 | if (!netdev || !netif_running(netdev)) |
fe1e980f | 227 | return; |
84f4ee90 | 228 | |
af667a29 | 229 | dev_info(&adapter->pdev->dev, "Tx Ring Summary\n"); |
ef456f85 | 230 | pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
84f4ee90 | 231 | buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; |
ef456f85 JK |
232 | pr_info(" %5d %5X %5X %016llX %04X %3X %016llX\n", |
233 | 0, tx_ring->next_to_use, tx_ring->next_to_clean, | |
234 | (unsigned long long)buffer_info->dma, | |
235 | buffer_info->length, | |
236 | buffer_info->next_to_watch, | |
237 | (unsigned long long)buffer_info->time_stamp); | |
84f4ee90 | 238 | |
af667a29 | 239 | /* Print Tx Ring */ |
84f4ee90 TI |
240 | if (!netif_msg_tx_done(adapter)) |
241 | goto rx_ring_summary; | |
242 | ||
af667a29 | 243 | dev_info(&adapter->pdev->dev, "Tx Ring Dump\n"); |
84f4ee90 TI |
244 | |
245 | /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) | |
246 | * | |
247 | * Legacy Transmit Descriptor | |
248 | * +--------------------------------------------------------------+ | |
249 | * 0 | Buffer Address [63:0] (Reserved on Write Back) | | |
250 | * +--------------------------------------------------------------+ | |
251 | * 8 | Special | CSS | Status | CMD | CSO | Length | | |
252 | * +--------------------------------------------------------------+ | |
253 | * 63 48 47 36 35 32 31 24 23 16 15 0 | |
254 | * | |
255 | * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload | |
256 | * 63 48 47 40 39 32 31 16 15 8 7 0 | |
257 | * +----------------------------------------------------------------+ | |
258 | * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | | |
259 | * +----------------------------------------------------------------+ | |
260 | * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | | |
261 | * +----------------------------------------------------------------+ | |
262 | * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 | |
263 | * | |
264 | * Extended Data Descriptor (DTYP=0x1) | |
265 | * +----------------------------------------------------------------+ | |
266 | * 0 | Buffer Address [63:0] | | |
267 | * +----------------------------------------------------------------+ | |
268 | * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | | |
269 | * +----------------------------------------------------------------+ | |
270 | * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 | |
271 | */ | |
ef456f85 JK |
272 | pr_info("Tl[desc] [address 63:0 ] [SpeCssSCmCsLen] [bi->dma ] leng ntw timestamp bi->skb <-- Legacy format\n"); |
273 | pr_info("Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Context format\n"); | |
274 | pr_info("Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen] [bi->dma ] leng ntw timestamp bi->skb <-- Ext Data format\n"); | |
84f4ee90 | 275 | for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { |
ef456f85 | 276 | const char *next_desc; |
84f4ee90 TI |
277 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
278 | buffer_info = &tx_ring->buffer_info[i]; | |
279 | u0 = (struct my_u0 *)tx_desc; | |
84f4ee90 | 280 | if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) |
ef456f85 | 281 | next_desc = " NTC/U"; |
84f4ee90 | 282 | else if (i == tx_ring->next_to_use) |
ef456f85 | 283 | next_desc = " NTU"; |
84f4ee90 | 284 | else if (i == tx_ring->next_to_clean) |
ef456f85 | 285 | next_desc = " NTC"; |
84f4ee90 | 286 | else |
ef456f85 JK |
287 | next_desc = ""; |
288 | pr_info("T%c[0x%03X] %016llX %016llX %016llX %04X %3X %016llX %p%s\n", | |
289 | (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' : | |
290 | ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), | |
291 | i, | |
292 | (unsigned long long)le64_to_cpu(u0->a), | |
293 | (unsigned long long)le64_to_cpu(u0->b), | |
294 | (unsigned long long)buffer_info->dma, | |
295 | buffer_info->length, buffer_info->next_to_watch, | |
296 | (unsigned long long)buffer_info->time_stamp, | |
297 | buffer_info->skb, next_desc); | |
84f4ee90 | 298 | |
f0c5dadf | 299 | if (netif_msg_pktdata(adapter) && buffer_info->skb) |
84f4ee90 | 300 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, |
f0c5dadf ET |
301 | 16, 1, buffer_info->skb->data, |
302 | buffer_info->skb->len, true); | |
84f4ee90 TI |
303 | } |
304 | ||
af667a29 | 305 | /* Print Rx Ring Summary */ |
84f4ee90 | 306 | rx_ring_summary: |
af667a29 | 307 | dev_info(&adapter->pdev->dev, "Rx Ring Summary\n"); |
ef456f85 JK |
308 | pr_info("Queue [NTU] [NTC]\n"); |
309 | pr_info(" %5d %5X %5X\n", | |
310 | 0, rx_ring->next_to_use, rx_ring->next_to_clean); | |
84f4ee90 | 311 | |
af667a29 | 312 | /* Print Rx Ring */ |
84f4ee90 | 313 | if (!netif_msg_rx_status(adapter)) |
fe1e980f | 314 | return; |
84f4ee90 | 315 | |
af667a29 | 316 | dev_info(&adapter->pdev->dev, "Rx Ring Dump\n"); |
84f4ee90 TI |
317 | switch (adapter->rx_ps_pages) { |
318 | case 1: | |
319 | case 2: | |
320 | case 3: | |
321 | /* [Extended] Packet Split Receive Descriptor Format | |
322 | * | |
323 | * +-----------------------------------------------------+ | |
324 | * 0 | Buffer Address 0 [63:0] | | |
325 | * +-----------------------------------------------------+ | |
326 | * 8 | Buffer Address 1 [63:0] | | |
327 | * +-----------------------------------------------------+ | |
328 | * 16 | Buffer Address 2 [63:0] | | |
329 | * +-----------------------------------------------------+ | |
330 | * 24 | Buffer Address 3 [63:0] | | |
331 | * +-----------------------------------------------------+ | |
332 | */ | |
ef456f85 | 333 | 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 |
334 | /* [Extended] Receive Descriptor (Write-Back) Format |
335 | * | |
336 | * 63 48 47 32 31 13 12 8 7 4 3 0 | |
337 | * +------------------------------------------------------+ | |
338 | * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | | |
339 | * | Checksum | Ident | | Queue | | Type | | |
340 | * +------------------------------------------------------+ | |
341 | * 8 | VLAN Tag | Length | Extended Error | Extended Status | | |
342 | * +------------------------------------------------------+ | |
343 | * 63 48 47 32 31 20 19 0 | |
344 | */ | |
ef456f85 | 345 | 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 | 346 | for (i = 0; i < rx_ring->count; i++) { |
ef456f85 | 347 | const char *next_desc; |
84f4ee90 TI |
348 | buffer_info = &rx_ring->buffer_info[i]; |
349 | rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); | |
350 | u1 = (struct my_u1 *)rx_desc_ps; | |
351 | staterr = | |
af667a29 | 352 | le32_to_cpu(rx_desc_ps->wb.middle.status_error); |
ef456f85 JK |
353 | |
354 | if (i == rx_ring->next_to_use) | |
355 | next_desc = " NTU"; | |
356 | else if (i == rx_ring->next_to_clean) | |
357 | next_desc = " NTC"; | |
358 | else | |
359 | next_desc = ""; | |
360 | ||
84f4ee90 TI |
361 | if (staterr & E1000_RXD_STAT_DD) { |
362 | /* Descriptor Done */ | |
ef456f85 JK |
363 | pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX ---------------- %p%s\n", |
364 | "RWB", i, | |
365 | (unsigned long long)le64_to_cpu(u1->a), | |
366 | (unsigned long long)le64_to_cpu(u1->b), | |
367 | (unsigned long long)le64_to_cpu(u1->c), | |
368 | (unsigned long long)le64_to_cpu(u1->d), | |
369 | buffer_info->skb, next_desc); | |
84f4ee90 | 370 | } else { |
ef456f85 JK |
371 | pr_info("%s[0x%03X] %016llX %016llX %016llX %016llX %016llX %p%s\n", |
372 | "R ", i, | |
373 | (unsigned long long)le64_to_cpu(u1->a), | |
374 | (unsigned long long)le64_to_cpu(u1->b), | |
375 | (unsigned long long)le64_to_cpu(u1->c), | |
376 | (unsigned long long)le64_to_cpu(u1->d), | |
377 | (unsigned long long)buffer_info->dma, | |
378 | buffer_info->skb, next_desc); | |
84f4ee90 TI |
379 | |
380 | if (netif_msg_pktdata(adapter)) | |
f0c5dadf ET |
381 | e1000e_dump_ps_pages(adapter, |
382 | buffer_info); | |
84f4ee90 | 383 | } |
84f4ee90 TI |
384 | } |
385 | break; | |
386 | default: | |
387 | case 0: | |
5f450212 | 388 | /* Extended Receive Descriptor (Read) Format |
84f4ee90 | 389 | * |
5f450212 BA |
390 | * +-----------------------------------------------------+ |
391 | * 0 | Buffer Address [63:0] | | |
392 | * +-----------------------------------------------------+ | |
393 | * 8 | Reserved | | |
394 | * +-----------------------------------------------------+ | |
84f4ee90 | 395 | */ |
ef456f85 | 396 | pr_info("R [desc] [buf addr 63:0 ] [reserved 63:0 ] [bi->dma ] [bi->skb] <-- Ext (Read) format\n"); |
5f450212 BA |
397 | /* Extended Receive Descriptor (Write-Back) Format |
398 | * | |
399 | * 63 48 47 32 31 24 23 4 3 0 | |
400 | * +------------------------------------------------------+ | |
401 | * | RSS Hash | | | | | |
402 | * 0 +-------------------+ Rsvd | Reserved | MRQ RSS | | |
403 | * | Packet | IP | | | Type | | |
404 | * | Checksum | Ident | | | | | |
405 | * +------------------------------------------------------+ | |
406 | * 8 | VLAN Tag | Length | Extended Error | Extended Status | | |
407 | * +------------------------------------------------------+ | |
408 | * 63 48 47 32 31 20 19 0 | |
409 | */ | |
ef456f85 | 410 | pr_info("RWB[desc] [cs ipid mrq] [vt ln xe xs] [bi->skb] <-- Ext (Write-Back) format\n"); |
5f450212 BA |
411 | |
412 | for (i = 0; i < rx_ring->count; i++) { | |
ef456f85 JK |
413 | const char *next_desc; |
414 | ||
84f4ee90 | 415 | buffer_info = &rx_ring->buffer_info[i]; |
5f450212 BA |
416 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
417 | u1 = (struct my_u1 *)rx_desc; | |
418 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
ef456f85 JK |
419 | |
420 | if (i == rx_ring->next_to_use) | |
421 | next_desc = " NTU"; | |
422 | else if (i == rx_ring->next_to_clean) | |
423 | next_desc = " NTC"; | |
424 | else | |
425 | next_desc = ""; | |
426 | ||
5f450212 BA |
427 | if (staterr & E1000_RXD_STAT_DD) { |
428 | /* Descriptor Done */ | |
ef456f85 JK |
429 | pr_info("%s[0x%03X] %016llX %016llX ---------------- %p%s\n", |
430 | "RWB", i, | |
431 | (unsigned long long)le64_to_cpu(u1->a), | |
432 | (unsigned long long)le64_to_cpu(u1->b), | |
433 | buffer_info->skb, next_desc); | |
5f450212 | 434 | } else { |
ef456f85 JK |
435 | pr_info("%s[0x%03X] %016llX %016llX %016llX %p%s\n", |
436 | "R ", i, | |
437 | (unsigned long long)le64_to_cpu(u1->a), | |
438 | (unsigned long long)le64_to_cpu(u1->b), | |
439 | (unsigned long long)buffer_info->dma, | |
440 | buffer_info->skb, next_desc); | |
5f450212 | 441 | |
f0c5dadf ET |
442 | if (netif_msg_pktdata(adapter) && |
443 | buffer_info->skb) | |
5f450212 BA |
444 | print_hex_dump(KERN_INFO, "", |
445 | DUMP_PREFIX_ADDRESS, 16, | |
446 | 1, | |
f0c5dadf | 447 | buffer_info->skb->data, |
5f450212 BA |
448 | adapter->rx_buffer_len, |
449 | true); | |
450 | } | |
84f4ee90 TI |
451 | } |
452 | } | |
84f4ee90 TI |
453 | } |
454 | ||
bc7f75fa AK |
455 | /** |
456 | * e1000_desc_unused - calculate if we have unused descriptors | |
457 | **/ | |
458 | static int e1000_desc_unused(struct e1000_ring *ring) | |
459 | { | |
460 | if (ring->next_to_clean > ring->next_to_use) | |
461 | return ring->next_to_clean - ring->next_to_use - 1; | |
462 | ||
463 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
464 | } | |
465 | ||
b67e1913 BA |
466 | /** |
467 | * e1000e_systim_to_hwtstamp - convert system time value to hw time stamp | |
468 | * @adapter: board private structure | |
469 | * @hwtstamps: time stamp structure to update | |
470 | * @systim: unsigned 64bit system time value. | |
471 | * | |
472 | * Convert the system time value stored in the RX/TXSTMP registers into a | |
473 | * hwtstamp which can be used by the upper level time stamping functions. | |
474 | * | |
475 | * The 'systim_lock' spinlock is used to protect the consistency of the | |
476 | * system time value. This is needed because reading the 64 bit time | |
477 | * value involves reading two 32 bit registers. The first read latches the | |
478 | * value. | |
479 | **/ | |
480 | static void e1000e_systim_to_hwtstamp(struct e1000_adapter *adapter, | |
481 | struct skb_shared_hwtstamps *hwtstamps, | |
482 | u64 systim) | |
483 | { | |
484 | u64 ns; | |
485 | unsigned long flags; | |
486 | ||
487 | spin_lock_irqsave(&adapter->systim_lock, flags); | |
488 | ns = timecounter_cyc2time(&adapter->tc, systim); | |
489 | spin_unlock_irqrestore(&adapter->systim_lock, flags); | |
490 | ||
491 | memset(hwtstamps, 0, sizeof(*hwtstamps)); | |
492 | hwtstamps->hwtstamp = ns_to_ktime(ns); | |
493 | } | |
494 | ||
495 | /** | |
496 | * e1000e_rx_hwtstamp - utility function which checks for Rx time stamp | |
497 | * @adapter: board private structure | |
498 | * @status: descriptor extended error and status field | |
499 | * @skb: particular skb to include time stamp | |
500 | * | |
501 | * If the time stamp is valid, convert it into the timecounter ns value | |
502 | * and store that result into the shhwtstamps structure which is passed | |
503 | * up the network stack. | |
504 | **/ | |
505 | static void e1000e_rx_hwtstamp(struct e1000_adapter *adapter, u32 status, | |
506 | struct sk_buff *skb) | |
507 | { | |
508 | struct e1000_hw *hw = &adapter->hw; | |
509 | u64 rxstmp; | |
510 | ||
511 | if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP) || | |
512 | !(status & E1000_RXDEXT_STATERR_TST) || | |
513 | !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) | |
514 | return; | |
515 | ||
516 | /* The Rx time stamp registers contain the time stamp. No other | |
517 | * received packet will be time stamped until the Rx time stamp | |
518 | * registers are read. Because only one packet can be time stamped | |
519 | * at a time, the register values must belong to this packet and | |
520 | * therefore none of the other additional attributes need to be | |
521 | * compared. | |
522 | */ | |
523 | rxstmp = (u64)er32(RXSTMPL); | |
524 | rxstmp |= (u64)er32(RXSTMPH) << 32; | |
525 | e1000e_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), rxstmp); | |
526 | ||
527 | adapter->flags2 &= ~FLAG2_CHECK_RX_HWTSTAMP; | |
528 | } | |
529 | ||
bc7f75fa | 530 | /** |
ad68076e | 531 | * e1000_receive_skb - helper function to handle Rx indications |
bc7f75fa | 532 | * @adapter: board private structure |
b67e1913 | 533 | * @staterr: descriptor extended error and status field as written by hardware |
bc7f75fa AK |
534 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) |
535 | * @skb: pointer to sk_buff to be indicated to stack | |
536 | **/ | |
537 | static void e1000_receive_skb(struct e1000_adapter *adapter, | |
af667a29 | 538 | struct net_device *netdev, struct sk_buff *skb, |
b67e1913 | 539 | u32 staterr, __le16 vlan) |
bc7f75fa | 540 | { |
86d70e53 | 541 | u16 tag = le16_to_cpu(vlan); |
b67e1913 BA |
542 | |
543 | e1000e_rx_hwtstamp(adapter, staterr, skb); | |
544 | ||
bc7f75fa AK |
545 | skb->protocol = eth_type_trans(skb, netdev); |
546 | ||
b67e1913 | 547 | if (staterr & E1000_RXD_STAT_VP) |
86a9bad3 | 548 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); |
86d70e53 JK |
549 | |
550 | napi_gro_receive(&adapter->napi, skb); | |
bc7f75fa AK |
551 | } |
552 | ||
553 | /** | |
af667a29 | 554 | * e1000_rx_checksum - Receive Checksum Offload |
afd12939 BA |
555 | * @adapter: board private structure |
556 | * @status_err: receive descriptor status and error fields | |
557 | * @csum: receive descriptor csum field | |
558 | * @sk_buff: socket buffer with received data | |
bc7f75fa AK |
559 | **/ |
560 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, | |
2e1706f2 | 561 | struct sk_buff *skb) |
bc7f75fa AK |
562 | { |
563 | u16 status = (u16)status_err; | |
564 | u8 errors = (u8)(status_err >> 24); | |
bc8acf2c ED |
565 | |
566 | skb_checksum_none_assert(skb); | |
bc7f75fa | 567 | |
afd12939 BA |
568 | /* Rx checksum disabled */ |
569 | if (!(adapter->netdev->features & NETIF_F_RXCSUM)) | |
570 | return; | |
571 | ||
bc7f75fa AK |
572 | /* Ignore Checksum bit is set */ |
573 | if (status & E1000_RXD_STAT_IXSM) | |
574 | return; | |
afd12939 | 575 | |
2e1706f2 BA |
576 | /* TCP/UDP checksum error bit or IP checksum error bit is set */ |
577 | if (errors & (E1000_RXD_ERR_TCPE | E1000_RXD_ERR_IPE)) { | |
bc7f75fa AK |
578 | /* let the stack verify checksum errors */ |
579 | adapter->hw_csum_err++; | |
580 | return; | |
581 | } | |
582 | ||
583 | /* TCP/UDP Checksum has not been calculated */ | |
584 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) | |
585 | return; | |
586 | ||
587 | /* It must be a TCP or UDP packet with a valid checksum */ | |
2e1706f2 | 588 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
bc7f75fa AK |
589 | adapter->hw_csum_good++; |
590 | } | |
591 | ||
55aa6985 | 592 | static void e1000e_update_rdt_wa(struct e1000_ring *rx_ring, unsigned int i) |
c6e7f51e | 593 | { |
55aa6985 | 594 | struct e1000_adapter *adapter = rx_ring->adapter; |
c6e7f51e | 595 | struct e1000_hw *hw = &adapter->hw; |
bdc125f7 BA |
596 | s32 ret_val = __ew32_prepare(hw); |
597 | ||
598 | writel(i, rx_ring->tail); | |
c6e7f51e | 599 | |
bdc125f7 | 600 | if (unlikely(!ret_val && (i != readl(rx_ring->tail)))) { |
c6e7f51e BA |
601 | u32 rctl = er32(RCTL); |
602 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
603 | e_err("ME firmware caused invalid RDT - resetting\n"); | |
604 | schedule_work(&adapter->reset_task); | |
605 | } | |
606 | } | |
607 | ||
55aa6985 | 608 | static void e1000e_update_tdt_wa(struct e1000_ring *tx_ring, unsigned int i) |
c6e7f51e | 609 | { |
55aa6985 | 610 | struct e1000_adapter *adapter = tx_ring->adapter; |
c6e7f51e | 611 | struct e1000_hw *hw = &adapter->hw; |
bdc125f7 | 612 | s32 ret_val = __ew32_prepare(hw); |
c6e7f51e | 613 | |
bdc125f7 BA |
614 | writel(i, tx_ring->tail); |
615 | ||
616 | if (unlikely(!ret_val && (i != readl(tx_ring->tail)))) { | |
c6e7f51e BA |
617 | u32 tctl = er32(TCTL); |
618 | ew32(TCTL, tctl & ~E1000_TCTL_EN); | |
619 | e_err("ME firmware caused invalid TDT - resetting\n"); | |
620 | schedule_work(&adapter->reset_task); | |
621 | } | |
622 | } | |
623 | ||
bc7f75fa | 624 | /** |
5f450212 | 625 | * e1000_alloc_rx_buffers - Replace used receive buffers |
55aa6985 | 626 | * @rx_ring: Rx descriptor ring |
bc7f75fa | 627 | **/ |
55aa6985 | 628 | static void e1000_alloc_rx_buffers(struct e1000_ring *rx_ring, |
c2fed996 | 629 | int cleaned_count, gfp_t gfp) |
bc7f75fa | 630 | { |
55aa6985 | 631 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa AK |
632 | struct net_device *netdev = adapter->netdev; |
633 | struct pci_dev *pdev = adapter->pdev; | |
5f450212 | 634 | union e1000_rx_desc_extended *rx_desc; |
bc7f75fa AK |
635 | struct e1000_buffer *buffer_info; |
636 | struct sk_buff *skb; | |
637 | unsigned int i; | |
89d71a66 | 638 | unsigned int bufsz = adapter->rx_buffer_len; |
bc7f75fa AK |
639 | |
640 | i = rx_ring->next_to_use; | |
641 | buffer_info = &rx_ring->buffer_info[i]; | |
642 | ||
643 | while (cleaned_count--) { | |
644 | skb = buffer_info->skb; | |
645 | if (skb) { | |
646 | skb_trim(skb, 0); | |
647 | goto map_skb; | |
648 | } | |
649 | ||
c2fed996 | 650 | skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
bc7f75fa AK |
651 | if (!skb) { |
652 | /* Better luck next round */ | |
653 | adapter->alloc_rx_buff_failed++; | |
654 | break; | |
655 | } | |
656 | ||
bc7f75fa AK |
657 | buffer_info->skb = skb; |
658 | map_skb: | |
0be3f55f | 659 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
bc7f75fa | 660 | adapter->rx_buffer_len, |
0be3f55f NN |
661 | DMA_FROM_DEVICE); |
662 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
af667a29 | 663 | dev_err(&pdev->dev, "Rx DMA map failed\n"); |
bc7f75fa AK |
664 | adapter->rx_dma_failed++; |
665 | break; | |
666 | } | |
667 | ||
5f450212 BA |
668 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
669 | rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
bc7f75fa | 670 | |
50849d79 | 671 | if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
e921eb1a | 672 | /* Force memory writes to complete before letting h/w |
50849d79 TH |
673 | * know there are new descriptors to fetch. (Only |
674 | * applicable for weak-ordered memory model archs, | |
675 | * such as IA-64). | |
676 | */ | |
677 | wmb(); | |
c6e7f51e | 678 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
55aa6985 | 679 | e1000e_update_rdt_wa(rx_ring, i); |
c6e7f51e | 680 | else |
c5083cf6 | 681 | writel(i, rx_ring->tail); |
50849d79 | 682 | } |
bc7f75fa AK |
683 | i++; |
684 | if (i == rx_ring->count) | |
685 | i = 0; | |
686 | buffer_info = &rx_ring->buffer_info[i]; | |
687 | } | |
688 | ||
50849d79 | 689 | rx_ring->next_to_use = i; |
bc7f75fa AK |
690 | } |
691 | ||
692 | /** | |
693 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
55aa6985 | 694 | * @rx_ring: Rx descriptor ring |
bc7f75fa | 695 | **/ |
55aa6985 | 696 | static void e1000_alloc_rx_buffers_ps(struct e1000_ring *rx_ring, |
c2fed996 | 697 | int cleaned_count, gfp_t gfp) |
bc7f75fa | 698 | { |
55aa6985 | 699 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa AK |
700 | struct net_device *netdev = adapter->netdev; |
701 | struct pci_dev *pdev = adapter->pdev; | |
702 | union e1000_rx_desc_packet_split *rx_desc; | |
bc7f75fa AK |
703 | struct e1000_buffer *buffer_info; |
704 | struct e1000_ps_page *ps_page; | |
705 | struct sk_buff *skb; | |
706 | unsigned int i, j; | |
707 | ||
708 | i = rx_ring->next_to_use; | |
709 | buffer_info = &rx_ring->buffer_info[i]; | |
710 | ||
711 | while (cleaned_count--) { | |
712 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
713 | ||
714 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 AK |
715 | ps_page = &buffer_info->ps_pages[j]; |
716 | if (j >= adapter->rx_ps_pages) { | |
717 | /* all unused desc entries get hw null ptr */ | |
af667a29 BA |
718 | rx_desc->read.buffer_addr[j + 1] = |
719 | ~cpu_to_le64(0); | |
47f44e40 AK |
720 | continue; |
721 | } | |
722 | if (!ps_page->page) { | |
c2fed996 | 723 | ps_page->page = alloc_page(gfp); |
bc7f75fa | 724 | if (!ps_page->page) { |
47f44e40 AK |
725 | adapter->alloc_rx_buff_failed++; |
726 | goto no_buffers; | |
727 | } | |
0be3f55f NN |
728 | ps_page->dma = dma_map_page(&pdev->dev, |
729 | ps_page->page, | |
730 | 0, PAGE_SIZE, | |
731 | DMA_FROM_DEVICE); | |
732 | if (dma_mapping_error(&pdev->dev, | |
733 | ps_page->dma)) { | |
47f44e40 | 734 | dev_err(&adapter->pdev->dev, |
af667a29 | 735 | "Rx DMA page map failed\n"); |
47f44e40 AK |
736 | adapter->rx_dma_failed++; |
737 | goto no_buffers; | |
bc7f75fa | 738 | } |
bc7f75fa | 739 | } |
e921eb1a | 740 | /* Refresh the desc even if buffer_addrs |
47f44e40 AK |
741 | * didn't change because each write-back |
742 | * erases this info. | |
743 | */ | |
af667a29 BA |
744 | rx_desc->read.buffer_addr[j + 1] = |
745 | cpu_to_le64(ps_page->dma); | |
bc7f75fa AK |
746 | } |
747 | ||
e5fe2541 | 748 | skb = __netdev_alloc_skb_ip_align(netdev, adapter->rx_ps_bsize0, |
c2fed996 | 749 | gfp); |
bc7f75fa AK |
750 | |
751 | if (!skb) { | |
752 | adapter->alloc_rx_buff_failed++; | |
753 | break; | |
754 | } | |
755 | ||
bc7f75fa | 756 | buffer_info->skb = skb; |
0be3f55f | 757 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
bc7f75fa | 758 | adapter->rx_ps_bsize0, |
0be3f55f NN |
759 | DMA_FROM_DEVICE); |
760 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
af667a29 | 761 | dev_err(&pdev->dev, "Rx DMA map failed\n"); |
bc7f75fa AK |
762 | adapter->rx_dma_failed++; |
763 | /* cleanup skb */ | |
764 | dev_kfree_skb_any(skb); | |
765 | buffer_info->skb = NULL; | |
766 | break; | |
767 | } | |
768 | ||
769 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
770 | ||
50849d79 | 771 | if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
e921eb1a | 772 | /* Force memory writes to complete before letting h/w |
50849d79 TH |
773 | * know there are new descriptors to fetch. (Only |
774 | * applicable for weak-ordered memory model archs, | |
775 | * such as IA-64). | |
776 | */ | |
777 | wmb(); | |
c6e7f51e | 778 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
55aa6985 | 779 | e1000e_update_rdt_wa(rx_ring, i << 1); |
c6e7f51e | 780 | else |
c5083cf6 | 781 | writel(i << 1, rx_ring->tail); |
50849d79 TH |
782 | } |
783 | ||
bc7f75fa AK |
784 | i++; |
785 | if (i == rx_ring->count) | |
786 | i = 0; | |
787 | buffer_info = &rx_ring->buffer_info[i]; | |
788 | } | |
789 | ||
790 | no_buffers: | |
50849d79 | 791 | rx_ring->next_to_use = i; |
bc7f75fa AK |
792 | } |
793 | ||
97ac8cae BA |
794 | /** |
795 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
55aa6985 | 796 | * @rx_ring: Rx descriptor ring |
97ac8cae BA |
797 | * @cleaned_count: number of buffers to allocate this pass |
798 | **/ | |
799 | ||
55aa6985 | 800 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_ring *rx_ring, |
c2fed996 | 801 | int cleaned_count, gfp_t gfp) |
97ac8cae | 802 | { |
55aa6985 | 803 | struct e1000_adapter *adapter = rx_ring->adapter; |
97ac8cae BA |
804 | struct net_device *netdev = adapter->netdev; |
805 | struct pci_dev *pdev = adapter->pdev; | |
5f450212 | 806 | union e1000_rx_desc_extended *rx_desc; |
97ac8cae BA |
807 | struct e1000_buffer *buffer_info; |
808 | struct sk_buff *skb; | |
809 | unsigned int i; | |
2a2293b9 | 810 | unsigned int bufsz = 256 - 16; /* for skb_reserve */ |
97ac8cae BA |
811 | |
812 | i = rx_ring->next_to_use; | |
813 | buffer_info = &rx_ring->buffer_info[i]; | |
814 | ||
815 | while (cleaned_count--) { | |
816 | skb = buffer_info->skb; | |
817 | if (skb) { | |
818 | skb_trim(skb, 0); | |
819 | goto check_page; | |
820 | } | |
821 | ||
c2fed996 | 822 | skb = __netdev_alloc_skb_ip_align(netdev, bufsz, gfp); |
97ac8cae BA |
823 | if (unlikely(!skb)) { |
824 | /* Better luck next round */ | |
825 | adapter->alloc_rx_buff_failed++; | |
826 | break; | |
827 | } | |
828 | ||
97ac8cae BA |
829 | buffer_info->skb = skb; |
830 | check_page: | |
831 | /* allocate a new page if necessary */ | |
832 | if (!buffer_info->page) { | |
c2fed996 | 833 | buffer_info->page = alloc_page(gfp); |
97ac8cae BA |
834 | if (unlikely(!buffer_info->page)) { |
835 | adapter->alloc_rx_buff_failed++; | |
836 | break; | |
837 | } | |
838 | } | |
839 | ||
37287fae | 840 | if (!buffer_info->dma) { |
0be3f55f | 841 | buffer_info->dma = dma_map_page(&pdev->dev, |
f0ff4398 BA |
842 | buffer_info->page, 0, |
843 | PAGE_SIZE, | |
0be3f55f | 844 | DMA_FROM_DEVICE); |
37287fae CP |
845 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
846 | adapter->alloc_rx_buff_failed++; | |
847 | break; | |
848 | } | |
849 | } | |
97ac8cae | 850 | |
5f450212 BA |
851 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
852 | rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
97ac8cae BA |
853 | |
854 | if (unlikely(++i == rx_ring->count)) | |
855 | i = 0; | |
856 | buffer_info = &rx_ring->buffer_info[i]; | |
857 | } | |
858 | ||
859 | if (likely(rx_ring->next_to_use != i)) { | |
860 | rx_ring->next_to_use = i; | |
861 | if (unlikely(i-- == 0)) | |
862 | i = (rx_ring->count - 1); | |
863 | ||
864 | /* Force memory writes to complete before letting h/w | |
865 | * know there are new descriptors to fetch. (Only | |
866 | * applicable for weak-ordered memory model archs, | |
e921eb1a BA |
867 | * such as IA-64). |
868 | */ | |
97ac8cae | 869 | wmb(); |
c6e7f51e | 870 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
55aa6985 | 871 | e1000e_update_rdt_wa(rx_ring, i); |
c6e7f51e | 872 | else |
c5083cf6 | 873 | writel(i, rx_ring->tail); |
97ac8cae BA |
874 | } |
875 | } | |
876 | ||
70495a50 BA |
877 | static inline void e1000_rx_hash(struct net_device *netdev, __le32 rss, |
878 | struct sk_buff *skb) | |
879 | { | |
880 | if (netdev->features & NETIF_F_RXHASH) | |
e25909bc | 881 | skb_set_hash(skb, le32_to_cpu(rss), PKT_HASH_TYPE_L3); |
70495a50 BA |
882 | } |
883 | ||
bc7f75fa | 884 | /** |
55aa6985 BA |
885 | * e1000_clean_rx_irq - Send received data up the network stack |
886 | * @rx_ring: Rx descriptor ring | |
bc7f75fa AK |
887 | * |
888 | * the return value indicates whether actual cleaning was done, there | |
889 | * is no guarantee that everything was cleaned | |
890 | **/ | |
55aa6985 BA |
891 | static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
892 | int work_to_do) | |
bc7f75fa | 893 | { |
55aa6985 | 894 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa AK |
895 | struct net_device *netdev = adapter->netdev; |
896 | struct pci_dev *pdev = adapter->pdev; | |
3bb99fe2 | 897 | struct e1000_hw *hw = &adapter->hw; |
5f450212 | 898 | union e1000_rx_desc_extended *rx_desc, *next_rxd; |
bc7f75fa | 899 | struct e1000_buffer *buffer_info, *next_buffer; |
5f450212 | 900 | u32 length, staterr; |
bc7f75fa AK |
901 | unsigned int i; |
902 | int cleaned_count = 0; | |
3db1cd5c | 903 | bool cleaned = false; |
bc7f75fa AK |
904 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
905 | ||
906 | i = rx_ring->next_to_clean; | |
5f450212 BA |
907 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
908 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
bc7f75fa AK |
909 | buffer_info = &rx_ring->buffer_info[i]; |
910 | ||
5f450212 | 911 | while (staterr & E1000_RXD_STAT_DD) { |
bc7f75fa | 912 | struct sk_buff *skb; |
bc7f75fa AK |
913 | |
914 | if (*work_done >= work_to_do) | |
915 | break; | |
916 | (*work_done)++; | |
2d0bb1c1 | 917 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
bc7f75fa | 918 | |
bc7f75fa AK |
919 | skb = buffer_info->skb; |
920 | buffer_info->skb = NULL; | |
921 | ||
922 | prefetch(skb->data - NET_IP_ALIGN); | |
923 | ||
924 | i++; | |
925 | if (i == rx_ring->count) | |
926 | i = 0; | |
5f450212 | 927 | next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
bc7f75fa AK |
928 | prefetch(next_rxd); |
929 | ||
930 | next_buffer = &rx_ring->buffer_info[i]; | |
931 | ||
3db1cd5c | 932 | cleaned = true; |
bc7f75fa | 933 | cleaned_count++; |
e5fe2541 BA |
934 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
935 | adapter->rx_buffer_len, DMA_FROM_DEVICE); | |
bc7f75fa AK |
936 | buffer_info->dma = 0; |
937 | ||
5f450212 | 938 | length = le16_to_cpu(rx_desc->wb.upper.length); |
bc7f75fa | 939 | |
e921eb1a | 940 | /* !EOP means multiple descriptors were used to store a single |
b94b5028 JB |
941 | * packet, if that's the case we need to toss it. In fact, we |
942 | * need to toss every packet with the EOP bit clear and the | |
943 | * next frame that _does_ have the EOP bit set, as it is by | |
944 | * definition only a frame fragment | |
945 | */ | |
5f450212 | 946 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) |
b94b5028 JB |
947 | adapter->flags2 |= FLAG2_IS_DISCARDING; |
948 | ||
949 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
bc7f75fa | 950 | /* All receives must fit into a single buffer */ |
3bb99fe2 | 951 | e_dbg("Receive packet consumed multiple buffers\n"); |
bc7f75fa AK |
952 | /* recycle */ |
953 | buffer_info->skb = skb; | |
5f450212 | 954 | if (staterr & E1000_RXD_STAT_EOP) |
b94b5028 | 955 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
bc7f75fa AK |
956 | goto next_desc; |
957 | } | |
958 | ||
cf955e6c BG |
959 | if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
960 | !(netdev->features & NETIF_F_RXALL))) { | |
bc7f75fa AK |
961 | /* recycle */ |
962 | buffer_info->skb = skb; | |
963 | goto next_desc; | |
964 | } | |
965 | ||
eb7c3adb | 966 | /* adjust length to remove Ethernet CRC */ |
0184039a BG |
967 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
968 | /* If configured to store CRC, don't subtract FCS, | |
969 | * but keep the FCS bytes out of the total_rx_bytes | |
970 | * counter | |
971 | */ | |
972 | if (netdev->features & NETIF_F_RXFCS) | |
973 | total_rx_bytes -= 4; | |
974 | else | |
975 | length -= 4; | |
976 | } | |
eb7c3adb | 977 | |
bc7f75fa AK |
978 | total_rx_bytes += length; |
979 | total_rx_packets++; | |
980 | ||
e921eb1a | 981 | /* code added for copybreak, this should improve |
bc7f75fa | 982 | * performance for small packets with large amounts |
ad68076e BA |
983 | * of reassembly being done in the stack |
984 | */ | |
bc7f75fa AK |
985 | if (length < copybreak) { |
986 | struct sk_buff *new_skb = | |
89d71a66 | 987 | netdev_alloc_skb_ip_align(netdev, length); |
bc7f75fa | 988 | if (new_skb) { |
808ff676 BA |
989 | skb_copy_to_linear_data_offset(new_skb, |
990 | -NET_IP_ALIGN, | |
991 | (skb->data - | |
992 | NET_IP_ALIGN), | |
993 | (length + | |
994 | NET_IP_ALIGN)); | |
bc7f75fa AK |
995 | /* save the skb in buffer_info as good */ |
996 | buffer_info->skb = skb; | |
997 | skb = new_skb; | |
998 | } | |
999 | /* else just continue with the old one */ | |
1000 | } | |
1001 | /* end copybreak code */ | |
1002 | skb_put(skb, length); | |
1003 | ||
1004 | /* Receive Checksum Offload */ | |
2e1706f2 | 1005 | e1000_rx_checksum(adapter, staterr, skb); |
bc7f75fa | 1006 | |
70495a50 BA |
1007 | e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
1008 | ||
5f450212 BA |
1009 | e1000_receive_skb(adapter, netdev, skb, staterr, |
1010 | rx_desc->wb.upper.vlan); | |
bc7f75fa AK |
1011 | |
1012 | next_desc: | |
5f450212 | 1013 | rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
bc7f75fa AK |
1014 | |
1015 | /* return some buffers to hardware, one at a time is too slow */ | |
1016 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
55aa6985 | 1017 | adapter->alloc_rx_buf(rx_ring, cleaned_count, |
c2fed996 | 1018 | GFP_ATOMIC); |
bc7f75fa AK |
1019 | cleaned_count = 0; |
1020 | } | |
1021 | ||
1022 | /* use prefetched values */ | |
1023 | rx_desc = next_rxd; | |
1024 | buffer_info = next_buffer; | |
5f450212 BA |
1025 | |
1026 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
bc7f75fa AK |
1027 | } |
1028 | rx_ring->next_to_clean = i; | |
1029 | ||
1030 | cleaned_count = e1000_desc_unused(rx_ring); | |
1031 | if (cleaned_count) | |
55aa6985 | 1032 | adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
bc7f75fa | 1033 | |
bc7f75fa | 1034 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 1035 | adapter->total_rx_packets += total_rx_packets; |
bc7f75fa AK |
1036 | return cleaned; |
1037 | } | |
1038 | ||
55aa6985 BA |
1039 | static void e1000_put_txbuf(struct e1000_ring *tx_ring, |
1040 | struct e1000_buffer *buffer_info) | |
bc7f75fa | 1041 | { |
55aa6985 BA |
1042 | struct e1000_adapter *adapter = tx_ring->adapter; |
1043 | ||
03b1320d AD |
1044 | if (buffer_info->dma) { |
1045 | if (buffer_info->mapped_as_page) | |
0be3f55f NN |
1046 | dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
1047 | buffer_info->length, DMA_TO_DEVICE); | |
03b1320d | 1048 | else |
0be3f55f NN |
1049 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
1050 | buffer_info->length, DMA_TO_DEVICE); | |
03b1320d AD |
1051 | buffer_info->dma = 0; |
1052 | } | |
bc7f75fa AK |
1053 | if (buffer_info->skb) { |
1054 | dev_kfree_skb_any(buffer_info->skb); | |
1055 | buffer_info->skb = NULL; | |
1056 | } | |
1b7719c4 | 1057 | buffer_info->time_stamp = 0; |
bc7f75fa AK |
1058 | } |
1059 | ||
41cec6f1 | 1060 | static void e1000_print_hw_hang(struct work_struct *work) |
bc7f75fa | 1061 | { |
41cec6f1 | 1062 | struct e1000_adapter *adapter = container_of(work, |
f0ff4398 BA |
1063 | struct e1000_adapter, |
1064 | print_hang_task); | |
09357b00 | 1065 | struct net_device *netdev = adapter->netdev; |
bc7f75fa AK |
1066 | struct e1000_ring *tx_ring = adapter->tx_ring; |
1067 | unsigned int i = tx_ring->next_to_clean; | |
1068 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
1069 | struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
41cec6f1 BA |
1070 | struct e1000_hw *hw = &adapter->hw; |
1071 | u16 phy_status, phy_1000t_status, phy_ext_status; | |
1072 | u16 pci_status; | |
1073 | ||
615b32af JB |
1074 | if (test_bit(__E1000_DOWN, &adapter->state)) |
1075 | return; | |
1076 | ||
e5fe2541 | 1077 | if (!adapter->tx_hang_recheck && (adapter->flags2 & FLAG2_DMA_BURST)) { |
e921eb1a | 1078 | /* May be block on write-back, flush and detect again |
09357b00 JK |
1079 | * flush pending descriptor writebacks to memory |
1080 | */ | |
1081 | ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); | |
1082 | /* execute the writes immediately */ | |
1083 | e1e_flush(); | |
e921eb1a | 1084 | /* Due to rare timing issues, write to TIDV again to ensure |
bf03085f MV |
1085 | * the write is successful |
1086 | */ | |
1087 | ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); | |
1088 | /* execute the writes immediately */ | |
1089 | e1e_flush(); | |
09357b00 JK |
1090 | adapter->tx_hang_recheck = true; |
1091 | return; | |
1092 | } | |
09357b00 | 1093 | adapter->tx_hang_recheck = false; |
d9554e96 DE |
1094 | |
1095 | if (er32(TDH(0)) == er32(TDT(0))) { | |
1096 | e_dbg("false hang detected, ignoring\n"); | |
1097 | return; | |
1098 | } | |
1099 | ||
1100 | /* Real hang detected */ | |
09357b00 JK |
1101 | netif_stop_queue(netdev); |
1102 | ||
c2ade1a4 BA |
1103 | e1e_rphy(hw, MII_BMSR, &phy_status); |
1104 | e1e_rphy(hw, MII_STAT1000, &phy_1000t_status); | |
1105 | e1e_rphy(hw, MII_ESTATUS, &phy_ext_status); | |
bc7f75fa | 1106 | |
41cec6f1 BA |
1107 | pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
1108 | ||
1109 | /* detected Hardware unit hang */ | |
1110 | e_err("Detected Hardware Unit Hang:\n" | |
44defeb3 JK |
1111 | " TDH <%x>\n" |
1112 | " TDT <%x>\n" | |
1113 | " next_to_use <%x>\n" | |
1114 | " next_to_clean <%x>\n" | |
1115 | "buffer_info[next_to_clean]:\n" | |
1116 | " time_stamp <%lx>\n" | |
1117 | " next_to_watch <%x>\n" | |
1118 | " jiffies <%lx>\n" | |
41cec6f1 BA |
1119 | " next_to_watch.status <%x>\n" |
1120 | "MAC Status <%x>\n" | |
1121 | "PHY Status <%x>\n" | |
1122 | "PHY 1000BASE-T Status <%x>\n" | |
1123 | "PHY Extended Status <%x>\n" | |
1124 | "PCI Status <%x>\n", | |
e5fe2541 BA |
1125 | readl(tx_ring->head), readl(tx_ring->tail), tx_ring->next_to_use, |
1126 | tx_ring->next_to_clean, tx_ring->buffer_info[eop].time_stamp, | |
1127 | eop, jiffies, eop_desc->upper.fields.status, er32(STATUS), | |
1128 | phy_status, phy_1000t_status, phy_ext_status, pci_status); | |
7c0427ee | 1129 | |
d9554e96 DE |
1130 | e1000e_dump(adapter); |
1131 | ||
7c0427ee BA |
1132 | /* Suggest workaround for known h/w issue */ |
1133 | if ((hw->mac.type == e1000_pchlan) && (er32(CTRL) & E1000_CTRL_TFCE)) | |
1134 | e_err("Try turning off Tx pause (flow control) via ethtool\n"); | |
bc7f75fa AK |
1135 | } |
1136 | ||
b67e1913 BA |
1137 | /** |
1138 | * e1000e_tx_hwtstamp_work - check for Tx time stamp | |
1139 | * @work: pointer to work struct | |
1140 | * | |
1141 | * This work function polls the TSYNCTXCTL valid bit to determine when a | |
1142 | * timestamp has been taken for the current stored skb. The timestamp must | |
1143 | * be for this skb because only one such packet is allowed in the queue. | |
1144 | */ | |
1145 | static void e1000e_tx_hwtstamp_work(struct work_struct *work) | |
1146 | { | |
1147 | struct e1000_adapter *adapter = container_of(work, struct e1000_adapter, | |
1148 | tx_hwtstamp_work); | |
1149 | struct e1000_hw *hw = &adapter->hw; | |
1150 | ||
b67e1913 BA |
1151 | if (er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID) { |
1152 | struct skb_shared_hwtstamps shhwtstamps; | |
1153 | u64 txstmp; | |
1154 | ||
1155 | txstmp = er32(TXSTMPL); | |
1156 | txstmp |= (u64)er32(TXSTMPH) << 32; | |
1157 | ||
1158 | e1000e_systim_to_hwtstamp(adapter, &shhwtstamps, txstmp); | |
1159 | ||
1160 | skb_tstamp_tx(adapter->tx_hwtstamp_skb, &shhwtstamps); | |
1161 | dev_kfree_skb_any(adapter->tx_hwtstamp_skb); | |
1162 | adapter->tx_hwtstamp_skb = NULL; | |
59c871c5 JK |
1163 | } else if (time_after(jiffies, adapter->tx_hwtstamp_start |
1164 | + adapter->tx_timeout_factor * HZ)) { | |
1165 | dev_kfree_skb_any(adapter->tx_hwtstamp_skb); | |
1166 | adapter->tx_hwtstamp_skb = NULL; | |
1167 | adapter->tx_hwtstamp_timeouts++; | |
1168 | e_warn("clearing Tx timestamp hang"); | |
b67e1913 BA |
1169 | } else { |
1170 | /* reschedule to check later */ | |
1171 | schedule_work(&adapter->tx_hwtstamp_work); | |
1172 | } | |
1173 | } | |
1174 | ||
bc7f75fa AK |
1175 | /** |
1176 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
55aa6985 | 1177 | * @tx_ring: Tx descriptor ring |
bc7f75fa AK |
1178 | * |
1179 | * the return value indicates whether actual cleaning was done, there | |
1180 | * is no guarantee that everything was cleaned | |
1181 | **/ | |
55aa6985 | 1182 | static bool e1000_clean_tx_irq(struct e1000_ring *tx_ring) |
bc7f75fa | 1183 | { |
55aa6985 | 1184 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
1185 | struct net_device *netdev = adapter->netdev; |
1186 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa AK |
1187 | struct e1000_tx_desc *tx_desc, *eop_desc; |
1188 | struct e1000_buffer *buffer_info; | |
1189 | unsigned int i, eop; | |
1190 | unsigned int count = 0; | |
bc7f75fa | 1191 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
3f0cfa3b | 1192 | unsigned int bytes_compl = 0, pkts_compl = 0; |
bc7f75fa AK |
1193 | |
1194 | i = tx_ring->next_to_clean; | |
1195 | eop = tx_ring->buffer_info[i].next_to_watch; | |
1196 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
1197 | ||
12d04a3c AD |
1198 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
1199 | (count < tx_ring->count)) { | |
a86043c2 | 1200 | bool cleaned = false; |
e80bd1d1 | 1201 | rmb(); /* read buffer_info after eop_desc */ |
a86043c2 | 1202 | for (; !cleaned; count++) { |
bc7f75fa AK |
1203 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
1204 | buffer_info = &tx_ring->buffer_info[i]; | |
1205 | cleaned = (i == eop); | |
1206 | ||
1207 | if (cleaned) { | |
9ed318d5 TH |
1208 | total_tx_packets += buffer_info->segs; |
1209 | total_tx_bytes += buffer_info->bytecount; | |
3f0cfa3b TH |
1210 | if (buffer_info->skb) { |
1211 | bytes_compl += buffer_info->skb->len; | |
1212 | pkts_compl++; | |
1213 | } | |
bc7f75fa AK |
1214 | } |
1215 | ||
55aa6985 | 1216 | e1000_put_txbuf(tx_ring, buffer_info); |
bc7f75fa AK |
1217 | tx_desc->upper.data = 0; |
1218 | ||
1219 | i++; | |
1220 | if (i == tx_ring->count) | |
1221 | i = 0; | |
1222 | } | |
1223 | ||
dac87619 TL |
1224 | if (i == tx_ring->next_to_use) |
1225 | break; | |
bc7f75fa AK |
1226 | eop = tx_ring->buffer_info[i].next_to_watch; |
1227 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
bc7f75fa AK |
1228 | } |
1229 | ||
1230 | tx_ring->next_to_clean = i; | |
1231 | ||
3f0cfa3b TH |
1232 | netdev_completed_queue(netdev, pkts_compl, bytes_compl); |
1233 | ||
bc7f75fa | 1234 | #define TX_WAKE_THRESHOLD 32 |
a86043c2 JB |
1235 | if (count && netif_carrier_ok(netdev) && |
1236 | e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { | |
bc7f75fa AK |
1237 | /* Make sure that anybody stopping the queue after this |
1238 | * sees the new next_to_clean. | |
1239 | */ | |
1240 | smp_mb(); | |
1241 | ||
1242 | if (netif_queue_stopped(netdev) && | |
1243 | !(test_bit(__E1000_DOWN, &adapter->state))) { | |
1244 | netif_wake_queue(netdev); | |
1245 | ++adapter->restart_queue; | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | if (adapter->detect_tx_hung) { | |
e921eb1a | 1250 | /* Detect a transmit hang in hardware, this serializes the |
41cec6f1 BA |
1251 | * check with the clearing of time_stamp and movement of i |
1252 | */ | |
3db1cd5c | 1253 | adapter->detect_tx_hung = false; |
12d04a3c AD |
1254 | if (tx_ring->buffer_info[i].time_stamp && |
1255 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp | |
8e95a202 | 1256 | + (adapter->tx_timeout_factor * HZ)) && |
09357b00 | 1257 | !(er32(STATUS) & E1000_STATUS_TXOFF)) |
41cec6f1 | 1258 | schedule_work(&adapter->print_hang_task); |
09357b00 JK |
1259 | else |
1260 | adapter->tx_hang_recheck = false; | |
bc7f75fa AK |
1261 | } |
1262 | adapter->total_tx_bytes += total_tx_bytes; | |
1263 | adapter->total_tx_packets += total_tx_packets; | |
807540ba | 1264 | return count < tx_ring->count; |
bc7f75fa AK |
1265 | } |
1266 | ||
bc7f75fa AK |
1267 | /** |
1268 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
55aa6985 | 1269 | * @rx_ring: Rx descriptor ring |
bc7f75fa AK |
1270 | * |
1271 | * the return value indicates whether actual cleaning was done, there | |
1272 | * is no guarantee that everything was cleaned | |
1273 | **/ | |
55aa6985 BA |
1274 | static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, |
1275 | int work_to_do) | |
bc7f75fa | 1276 | { |
55aa6985 | 1277 | struct e1000_adapter *adapter = rx_ring->adapter; |
3bb99fe2 | 1278 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
1279 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
1280 | struct net_device *netdev = adapter->netdev; | |
1281 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
1282 | struct e1000_buffer *buffer_info, *next_buffer; |
1283 | struct e1000_ps_page *ps_page; | |
1284 | struct sk_buff *skb; | |
1285 | unsigned int i, j; | |
1286 | u32 length, staterr; | |
1287 | int cleaned_count = 0; | |
3db1cd5c | 1288 | bool cleaned = false; |
bc7f75fa AK |
1289 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
1290 | ||
1291 | i = rx_ring->next_to_clean; | |
1292 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
1293 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1294 | buffer_info = &rx_ring->buffer_info[i]; | |
1295 | ||
1296 | while (staterr & E1000_RXD_STAT_DD) { | |
1297 | if (*work_done >= work_to_do) | |
1298 | break; | |
1299 | (*work_done)++; | |
1300 | skb = buffer_info->skb; | |
2d0bb1c1 | 1301 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
bc7f75fa AK |
1302 | |
1303 | /* in the packet split case this is header only */ | |
1304 | prefetch(skb->data - NET_IP_ALIGN); | |
1305 | ||
1306 | i++; | |
1307 | if (i == rx_ring->count) | |
1308 | i = 0; | |
1309 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
1310 | prefetch(next_rxd); | |
1311 | ||
1312 | next_buffer = &rx_ring->buffer_info[i]; | |
1313 | ||
3db1cd5c | 1314 | cleaned = true; |
bc7f75fa | 1315 | cleaned_count++; |
0be3f55f | 1316 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
af667a29 | 1317 | adapter->rx_ps_bsize0, DMA_FROM_DEVICE); |
bc7f75fa AK |
1318 | buffer_info->dma = 0; |
1319 | ||
af667a29 | 1320 | /* see !EOP comment in other Rx routine */ |
b94b5028 JB |
1321 | if (!(staterr & E1000_RXD_STAT_EOP)) |
1322 | adapter->flags2 |= FLAG2_IS_DISCARDING; | |
1323 | ||
1324 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
ef456f85 | 1325 | e_dbg("Packet Split buffers didn't pick up the full packet\n"); |
bc7f75fa | 1326 | dev_kfree_skb_irq(skb); |
b94b5028 JB |
1327 | if (staterr & E1000_RXD_STAT_EOP) |
1328 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; | |
bc7f75fa AK |
1329 | goto next_desc; |
1330 | } | |
1331 | ||
cf955e6c BG |
1332 | if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
1333 | !(netdev->features & NETIF_F_RXALL))) { | |
bc7f75fa AK |
1334 | dev_kfree_skb_irq(skb); |
1335 | goto next_desc; | |
1336 | } | |
1337 | ||
1338 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
1339 | ||
1340 | if (!length) { | |
ef456f85 | 1341 | e_dbg("Last part of the packet spanning multiple descriptors\n"); |
bc7f75fa AK |
1342 | dev_kfree_skb_irq(skb); |
1343 | goto next_desc; | |
1344 | } | |
1345 | ||
1346 | /* Good Receive */ | |
1347 | skb_put(skb, length); | |
1348 | ||
1349 | { | |
e921eb1a | 1350 | /* this looks ugly, but it seems compiler issues make |
0e15df49 BA |
1351 | * it more efficient than reusing j |
1352 | */ | |
1353 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
bc7f75fa | 1354 | |
e921eb1a | 1355 | /* page alloc/put takes too long and effects small |
0e15df49 BA |
1356 | * packet throughput, so unsplit small packets and |
1357 | * save the alloc/put only valid in softirq (napi) | |
1358 | * context to call kmap_* | |
ad68076e | 1359 | */ |
0e15df49 BA |
1360 | if (l1 && (l1 <= copybreak) && |
1361 | ((length + l1) <= adapter->rx_ps_bsize0)) { | |
1362 | u8 *vaddr; | |
1363 | ||
1364 | ps_page = &buffer_info->ps_pages[0]; | |
1365 | ||
e921eb1a | 1366 | /* there is no documentation about how to call |
0e15df49 BA |
1367 | * kmap_atomic, so we can't hold the mapping |
1368 | * very long | |
1369 | */ | |
1370 | dma_sync_single_for_cpu(&pdev->dev, | |
1371 | ps_page->dma, | |
1372 | PAGE_SIZE, | |
1373 | DMA_FROM_DEVICE); | |
9f393834 | 1374 | vaddr = kmap_atomic(ps_page->page); |
0e15df49 | 1375 | memcpy(skb_tail_pointer(skb), vaddr, l1); |
9f393834 | 1376 | kunmap_atomic(vaddr); |
0e15df49 BA |
1377 | dma_sync_single_for_device(&pdev->dev, |
1378 | ps_page->dma, | |
1379 | PAGE_SIZE, | |
1380 | DMA_FROM_DEVICE); | |
1381 | ||
1382 | /* remove the CRC */ | |
0184039a BG |
1383 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
1384 | if (!(netdev->features & NETIF_F_RXFCS)) | |
1385 | l1 -= 4; | |
1386 | } | |
0e15df49 BA |
1387 | |
1388 | skb_put(skb, l1); | |
1389 | goto copydone; | |
e80bd1d1 | 1390 | } /* if */ |
bc7f75fa AK |
1391 | } |
1392 | ||
1393 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
1394 | length = le16_to_cpu(rx_desc->wb.upper.length[j]); | |
1395 | if (!length) | |
1396 | break; | |
1397 | ||
47f44e40 | 1398 | ps_page = &buffer_info->ps_pages[j]; |
0be3f55f NN |
1399 | dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
1400 | DMA_FROM_DEVICE); | |
bc7f75fa AK |
1401 | ps_page->dma = 0; |
1402 | skb_fill_page_desc(skb, j, ps_page->page, 0, length); | |
1403 | ps_page->page = NULL; | |
1404 | skb->len += length; | |
1405 | skb->data_len += length; | |
98a045d7 | 1406 | skb->truesize += PAGE_SIZE; |
bc7f75fa AK |
1407 | } |
1408 | ||
eb7c3adb JK |
1409 | /* strip the ethernet crc, problem is we're using pages now so |
1410 | * this whole operation can get a little cpu intensive | |
1411 | */ | |
0184039a BG |
1412 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) { |
1413 | if (!(netdev->features & NETIF_F_RXFCS)) | |
1414 | pskb_trim(skb, skb->len - 4); | |
1415 | } | |
eb7c3adb | 1416 | |
bc7f75fa AK |
1417 | copydone: |
1418 | total_rx_bytes += skb->len; | |
1419 | total_rx_packets++; | |
1420 | ||
2e1706f2 | 1421 | e1000_rx_checksum(adapter, staterr, skb); |
bc7f75fa | 1422 | |
70495a50 BA |
1423 | e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
1424 | ||
bc7f75fa | 1425 | if (rx_desc->wb.upper.header_status & |
17e813ec | 1426 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) |
bc7f75fa AK |
1427 | adapter->rx_hdr_split++; |
1428 | ||
b67e1913 BA |
1429 | e1000_receive_skb(adapter, netdev, skb, staterr, |
1430 | rx_desc->wb.middle.vlan); | |
bc7f75fa AK |
1431 | |
1432 | next_desc: | |
1433 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); | |
1434 | buffer_info->skb = NULL; | |
1435 | ||
1436 | /* return some buffers to hardware, one at a time is too slow */ | |
1437 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
55aa6985 | 1438 | adapter->alloc_rx_buf(rx_ring, cleaned_count, |
c2fed996 | 1439 | GFP_ATOMIC); |
bc7f75fa AK |
1440 | cleaned_count = 0; |
1441 | } | |
1442 | ||
1443 | /* use prefetched values */ | |
1444 | rx_desc = next_rxd; | |
1445 | buffer_info = next_buffer; | |
1446 | ||
1447 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1448 | } | |
1449 | rx_ring->next_to_clean = i; | |
1450 | ||
1451 | cleaned_count = e1000_desc_unused(rx_ring); | |
1452 | if (cleaned_count) | |
55aa6985 | 1453 | adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
bc7f75fa | 1454 | |
bc7f75fa | 1455 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 1456 | adapter->total_rx_packets += total_rx_packets; |
bc7f75fa AK |
1457 | return cleaned; |
1458 | } | |
1459 | ||
97ac8cae BA |
1460 | /** |
1461 | * e1000_consume_page - helper function | |
1462 | **/ | |
1463 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
66501f56 | 1464 | u16 length) |
97ac8cae BA |
1465 | { |
1466 | bi->page = NULL; | |
1467 | skb->len += length; | |
1468 | skb->data_len += length; | |
98a045d7 | 1469 | skb->truesize += PAGE_SIZE; |
97ac8cae BA |
1470 | } |
1471 | ||
1472 | /** | |
1473 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
1474 | * @adapter: board private structure | |
1475 | * | |
1476 | * the return value indicates whether actual cleaning was done, there | |
1477 | * is no guarantee that everything was cleaned | |
1478 | **/ | |
55aa6985 BA |
1479 | static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, |
1480 | int work_to_do) | |
97ac8cae | 1481 | { |
55aa6985 | 1482 | struct e1000_adapter *adapter = rx_ring->adapter; |
97ac8cae BA |
1483 | struct net_device *netdev = adapter->netdev; |
1484 | struct pci_dev *pdev = adapter->pdev; | |
5f450212 | 1485 | union e1000_rx_desc_extended *rx_desc, *next_rxd; |
97ac8cae | 1486 | struct e1000_buffer *buffer_info, *next_buffer; |
5f450212 | 1487 | u32 length, staterr; |
97ac8cae BA |
1488 | unsigned int i; |
1489 | int cleaned_count = 0; | |
1490 | bool cleaned = false; | |
362e20ca | 1491 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; |
17e813ec | 1492 | struct skb_shared_info *shinfo; |
97ac8cae BA |
1493 | |
1494 | i = rx_ring->next_to_clean; | |
5f450212 BA |
1495 | rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); |
1496 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
97ac8cae BA |
1497 | buffer_info = &rx_ring->buffer_info[i]; |
1498 | ||
5f450212 | 1499 | while (staterr & E1000_RXD_STAT_DD) { |
97ac8cae | 1500 | struct sk_buff *skb; |
97ac8cae BA |
1501 | |
1502 | if (*work_done >= work_to_do) | |
1503 | break; | |
1504 | (*work_done)++; | |
2d0bb1c1 | 1505 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
97ac8cae | 1506 | |
97ac8cae BA |
1507 | skb = buffer_info->skb; |
1508 | buffer_info->skb = NULL; | |
1509 | ||
1510 | ++i; | |
1511 | if (i == rx_ring->count) | |
1512 | i = 0; | |
5f450212 | 1513 | next_rxd = E1000_RX_DESC_EXT(*rx_ring, i); |
97ac8cae BA |
1514 | prefetch(next_rxd); |
1515 | ||
1516 | next_buffer = &rx_ring->buffer_info[i]; | |
1517 | ||
1518 | cleaned = true; | |
1519 | cleaned_count++; | |
0be3f55f NN |
1520 | dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
1521 | DMA_FROM_DEVICE); | |
97ac8cae BA |
1522 | buffer_info->dma = 0; |
1523 | ||
5f450212 | 1524 | length = le16_to_cpu(rx_desc->wb.upper.length); |
97ac8cae BA |
1525 | |
1526 | /* errors is only valid for DD + EOP descriptors */ | |
5f450212 | 1527 | if (unlikely((staterr & E1000_RXD_STAT_EOP) && |
cf955e6c BG |
1528 | ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && |
1529 | !(netdev->features & NETIF_F_RXALL)))) { | |
5f450212 BA |
1530 | /* recycle both page and skb */ |
1531 | buffer_info->skb = skb; | |
1532 | /* an error means any chain goes out the window too */ | |
1533 | if (rx_ring->rx_skb_top) | |
1534 | dev_kfree_skb_irq(rx_ring->rx_skb_top); | |
1535 | rx_ring->rx_skb_top = NULL; | |
1536 | goto next_desc; | |
97ac8cae | 1537 | } |
f0f1a172 | 1538 | #define rxtop (rx_ring->rx_skb_top) |
5f450212 | 1539 | if (!(staterr & E1000_RXD_STAT_EOP)) { |
97ac8cae BA |
1540 | /* this descriptor is only the beginning (or middle) */ |
1541 | if (!rxtop) { | |
1542 | /* this is the beginning of a chain */ | |
1543 | rxtop = skb; | |
1544 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
f0ff4398 | 1545 | 0, length); |
97ac8cae BA |
1546 | } else { |
1547 | /* this is the middle of a chain */ | |
17e813ec BA |
1548 | shinfo = skb_shinfo(rxtop); |
1549 | skb_fill_page_desc(rxtop, shinfo->nr_frags, | |
1550 | buffer_info->page, 0, | |
1551 | length); | |
97ac8cae BA |
1552 | /* re-use the skb, only consumed the page */ |
1553 | buffer_info->skb = skb; | |
1554 | } | |
1555 | e1000_consume_page(buffer_info, rxtop, length); | |
1556 | goto next_desc; | |
1557 | } else { | |
1558 | if (rxtop) { | |
1559 | /* end of the chain */ | |
17e813ec BA |
1560 | shinfo = skb_shinfo(rxtop); |
1561 | skb_fill_page_desc(rxtop, shinfo->nr_frags, | |
1562 | buffer_info->page, 0, | |
1563 | length); | |
97ac8cae | 1564 | /* re-use the current skb, we only consumed the |
e921eb1a BA |
1565 | * page |
1566 | */ | |
97ac8cae BA |
1567 | buffer_info->skb = skb; |
1568 | skb = rxtop; | |
1569 | rxtop = NULL; | |
1570 | e1000_consume_page(buffer_info, skb, length); | |
1571 | } else { | |
1572 | /* no chain, got EOP, this buf is the packet | |
e921eb1a BA |
1573 | * copybreak to save the put_page/alloc_page |
1574 | */ | |
97ac8cae BA |
1575 | if (length <= copybreak && |
1576 | skb_tailroom(skb) >= length) { | |
1577 | u8 *vaddr; | |
4679026d | 1578 | vaddr = kmap_atomic(buffer_info->page); |
97ac8cae BA |
1579 | memcpy(skb_tail_pointer(skb), vaddr, |
1580 | length); | |
4679026d | 1581 | kunmap_atomic(vaddr); |
97ac8cae | 1582 | /* re-use the page, so don't erase |
e921eb1a BA |
1583 | * buffer_info->page |
1584 | */ | |
97ac8cae BA |
1585 | skb_put(skb, length); |
1586 | } else { | |
1587 | skb_fill_page_desc(skb, 0, | |
f0ff4398 BA |
1588 | buffer_info->page, 0, |
1589 | length); | |
97ac8cae | 1590 | e1000_consume_page(buffer_info, skb, |
f0ff4398 | 1591 | length); |
97ac8cae BA |
1592 | } |
1593 | } | |
1594 | } | |
1595 | ||
2e1706f2 BA |
1596 | /* Receive Checksum Offload */ |
1597 | e1000_rx_checksum(adapter, staterr, skb); | |
97ac8cae | 1598 | |
70495a50 BA |
1599 | e1000_rx_hash(netdev, rx_desc->wb.lower.hi_dword.rss, skb); |
1600 | ||
97ac8cae BA |
1601 | /* probably a little skewed due to removing CRC */ |
1602 | total_rx_bytes += skb->len; | |
1603 | total_rx_packets++; | |
1604 | ||
1605 | /* eth type trans needs skb->data to point to something */ | |
1606 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
44defeb3 | 1607 | e_err("pskb_may_pull failed.\n"); |
ef5ab89c | 1608 | dev_kfree_skb_irq(skb); |
97ac8cae BA |
1609 | goto next_desc; |
1610 | } | |
1611 | ||
5f450212 BA |
1612 | e1000_receive_skb(adapter, netdev, skb, staterr, |
1613 | rx_desc->wb.upper.vlan); | |
97ac8cae BA |
1614 | |
1615 | next_desc: | |
5f450212 | 1616 | rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF); |
97ac8cae BA |
1617 | |
1618 | /* return some buffers to hardware, one at a time is too slow */ | |
1619 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
55aa6985 | 1620 | adapter->alloc_rx_buf(rx_ring, cleaned_count, |
c2fed996 | 1621 | GFP_ATOMIC); |
97ac8cae BA |
1622 | cleaned_count = 0; |
1623 | } | |
1624 | ||
1625 | /* use prefetched values */ | |
1626 | rx_desc = next_rxd; | |
1627 | buffer_info = next_buffer; | |
5f450212 BA |
1628 | |
1629 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
97ac8cae BA |
1630 | } |
1631 | rx_ring->next_to_clean = i; | |
1632 | ||
1633 | cleaned_count = e1000_desc_unused(rx_ring); | |
1634 | if (cleaned_count) | |
55aa6985 | 1635 | adapter->alloc_rx_buf(rx_ring, cleaned_count, GFP_ATOMIC); |
97ac8cae BA |
1636 | |
1637 | adapter->total_rx_bytes += total_rx_bytes; | |
1638 | adapter->total_rx_packets += total_rx_packets; | |
97ac8cae BA |
1639 | return cleaned; |
1640 | } | |
1641 | ||
bc7f75fa AK |
1642 | /** |
1643 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
55aa6985 | 1644 | * @rx_ring: Rx descriptor ring |
bc7f75fa | 1645 | **/ |
55aa6985 | 1646 | static void e1000_clean_rx_ring(struct e1000_ring *rx_ring) |
bc7f75fa | 1647 | { |
55aa6985 | 1648 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa AK |
1649 | struct e1000_buffer *buffer_info; |
1650 | struct e1000_ps_page *ps_page; | |
1651 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
1652 | unsigned int i, j; |
1653 | ||
1654 | /* Free all the Rx ring sk_buffs */ | |
1655 | for (i = 0; i < rx_ring->count; i++) { | |
1656 | buffer_info = &rx_ring->buffer_info[i]; | |
1657 | if (buffer_info->dma) { | |
1658 | if (adapter->clean_rx == e1000_clean_rx_irq) | |
0be3f55f | 1659 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1660 | adapter->rx_buffer_len, |
0be3f55f | 1661 | DMA_FROM_DEVICE); |
97ac8cae | 1662 | else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
0be3f55f | 1663 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
f0ff4398 | 1664 | PAGE_SIZE, DMA_FROM_DEVICE); |
bc7f75fa | 1665 | else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
0be3f55f | 1666 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1667 | adapter->rx_ps_bsize0, |
0be3f55f | 1668 | DMA_FROM_DEVICE); |
bc7f75fa AK |
1669 | buffer_info->dma = 0; |
1670 | } | |
1671 | ||
97ac8cae BA |
1672 | if (buffer_info->page) { |
1673 | put_page(buffer_info->page); | |
1674 | buffer_info->page = NULL; | |
1675 | } | |
1676 | ||
bc7f75fa AK |
1677 | if (buffer_info->skb) { |
1678 | dev_kfree_skb(buffer_info->skb); | |
1679 | buffer_info->skb = NULL; | |
1680 | } | |
1681 | ||
1682 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 | 1683 | ps_page = &buffer_info->ps_pages[j]; |
bc7f75fa AK |
1684 | if (!ps_page->page) |
1685 | break; | |
0be3f55f NN |
1686 | dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
1687 | DMA_FROM_DEVICE); | |
bc7f75fa AK |
1688 | ps_page->dma = 0; |
1689 | put_page(ps_page->page); | |
1690 | ps_page->page = NULL; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | /* there also may be some cached data from a chained receive */ | |
1695 | if (rx_ring->rx_skb_top) { | |
1696 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1697 | rx_ring->rx_skb_top = NULL; | |
1698 | } | |
1699 | ||
bc7f75fa AK |
1700 | /* Zero out the descriptor ring */ |
1701 | memset(rx_ring->desc, 0, rx_ring->size); | |
1702 | ||
1703 | rx_ring->next_to_clean = 0; | |
1704 | rx_ring->next_to_use = 0; | |
b94b5028 | 1705 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
bc7f75fa | 1706 | |
c5083cf6 | 1707 | writel(0, rx_ring->head); |
b485dbae | 1708 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
bdc125f7 BA |
1709 | e1000e_update_rdt_wa(rx_ring, 0); |
1710 | else | |
1711 | writel(0, rx_ring->tail); | |
bc7f75fa AK |
1712 | } |
1713 | ||
a8f88ff5 JB |
1714 | static void e1000e_downshift_workaround(struct work_struct *work) |
1715 | { | |
1716 | struct e1000_adapter *adapter = container_of(work, | |
17e813ec BA |
1717 | struct e1000_adapter, |
1718 | downshift_task); | |
a8f88ff5 | 1719 | |
615b32af JB |
1720 | if (test_bit(__E1000_DOWN, &adapter->state)) |
1721 | return; | |
1722 | ||
a8f88ff5 JB |
1723 | e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); |
1724 | } | |
1725 | ||
bc7f75fa AK |
1726 | /** |
1727 | * e1000_intr_msi - Interrupt Handler | |
1728 | * @irq: interrupt number | |
1729 | * @data: pointer to a network interface device structure | |
1730 | **/ | |
8bb62869 | 1731 | static irqreturn_t e1000_intr_msi(int __always_unused irq, void *data) |
bc7f75fa AK |
1732 | { |
1733 | struct net_device *netdev = data; | |
1734 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1735 | struct e1000_hw *hw = &adapter->hw; | |
1736 | u32 icr = er32(ICR); | |
1737 | ||
e921eb1a | 1738 | /* read ICR disables interrupts using IAM */ |
573cca8c | 1739 | if (icr & E1000_ICR_LSC) { |
f92518dd | 1740 | hw->mac.get_link_status = true; |
e921eb1a | 1741 | /* ICH8 workaround-- Call gig speed drop workaround on cable |
ad68076e BA |
1742 | * disconnect (LSC) before accessing any PHY registers |
1743 | */ | |
bc7f75fa AK |
1744 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1745 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1746 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1747 | |
e921eb1a | 1748 | /* 80003ES2LAN workaround-- For packet buffer work-around on |
bc7f75fa | 1749 | * link down event; disable receives here in the ISR and reset |
ad68076e BA |
1750 | * adapter in watchdog |
1751 | */ | |
bc7f75fa AK |
1752 | if (netif_carrier_ok(netdev) && |
1753 | adapter->flags & FLAG_RX_NEEDS_RESTART) { | |
1754 | /* disable receives */ | |
1755 | u32 rctl = er32(RCTL); | |
1756 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
12d43f7d | 1757 | adapter->flags |= FLAG_RESTART_NOW; |
bc7f75fa AK |
1758 | } |
1759 | /* guard against interrupt when we're going down */ | |
1760 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1761 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1762 | } | |
1763 | ||
94fb848b BA |
1764 | /* Reset on uncorrectable ECC error */ |
1765 | if ((icr & E1000_ICR_ECCER) && (hw->mac.type == e1000_pch_lpt)) { | |
1766 | u32 pbeccsts = er32(PBECCSTS); | |
1767 | ||
1768 | adapter->corr_errors += | |
1769 | pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; | |
1770 | adapter->uncorr_errors += | |
1771 | (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> | |
1772 | E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; | |
1773 | ||
1774 | /* Do the reset outside of interrupt context */ | |
1775 | schedule_work(&adapter->reset_task); | |
1776 | ||
1777 | /* return immediately since reset is imminent */ | |
1778 | return IRQ_HANDLED; | |
1779 | } | |
1780 | ||
288379f0 | 1781 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1782 | adapter->total_tx_bytes = 0; |
1783 | adapter->total_tx_packets = 0; | |
1784 | adapter->total_rx_bytes = 0; | |
1785 | adapter->total_rx_packets = 0; | |
288379f0 | 1786 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1787 | } |
1788 | ||
1789 | return IRQ_HANDLED; | |
1790 | } | |
1791 | ||
1792 | /** | |
1793 | * e1000_intr - Interrupt Handler | |
1794 | * @irq: interrupt number | |
1795 | * @data: pointer to a network interface device structure | |
1796 | **/ | |
8bb62869 | 1797 | static irqreturn_t e1000_intr(int __always_unused irq, void *data) |
bc7f75fa AK |
1798 | { |
1799 | struct net_device *netdev = data; | |
1800 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1801 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa | 1802 | u32 rctl, icr = er32(ICR); |
4662e82b | 1803 | |
a68ea775 | 1804 | if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
e80bd1d1 | 1805 | return IRQ_NONE; /* Not our interrupt */ |
bc7f75fa | 1806 | |
e921eb1a | 1807 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
ad68076e BA |
1808 | * not set, then the adapter didn't send an interrupt |
1809 | */ | |
bc7f75fa AK |
1810 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
1811 | return IRQ_NONE; | |
1812 | ||
e921eb1a | 1813 | /* Interrupt Auto-Mask...upon reading ICR, |
ad68076e BA |
1814 | * interrupts are masked. No need for the |
1815 | * IMC write | |
1816 | */ | |
bc7f75fa | 1817 | |
573cca8c | 1818 | if (icr & E1000_ICR_LSC) { |
f92518dd | 1819 | hw->mac.get_link_status = true; |
e921eb1a | 1820 | /* ICH8 workaround-- Call gig speed drop workaround on cable |
ad68076e BA |
1821 | * disconnect (LSC) before accessing any PHY registers |
1822 | */ | |
bc7f75fa AK |
1823 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1824 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1825 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1826 | |
e921eb1a | 1827 | /* 80003ES2LAN workaround-- |
bc7f75fa AK |
1828 | * For packet buffer work-around on link down event; |
1829 | * disable receives here in the ISR and | |
1830 | * reset adapter in watchdog | |
1831 | */ | |
1832 | if (netif_carrier_ok(netdev) && | |
1833 | (adapter->flags & FLAG_RX_NEEDS_RESTART)) { | |
1834 | /* disable receives */ | |
1835 | rctl = er32(RCTL); | |
1836 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
12d43f7d | 1837 | adapter->flags |= FLAG_RESTART_NOW; |
bc7f75fa AK |
1838 | } |
1839 | /* guard against interrupt when we're going down */ | |
1840 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1841 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1842 | } | |
1843 | ||
94fb848b BA |
1844 | /* Reset on uncorrectable ECC error */ |
1845 | if ((icr & E1000_ICR_ECCER) && (hw->mac.type == e1000_pch_lpt)) { | |
1846 | u32 pbeccsts = er32(PBECCSTS); | |
1847 | ||
1848 | adapter->corr_errors += | |
1849 | pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; | |
1850 | adapter->uncorr_errors += | |
1851 | (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> | |
1852 | E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; | |
1853 | ||
1854 | /* Do the reset outside of interrupt context */ | |
1855 | schedule_work(&adapter->reset_task); | |
1856 | ||
1857 | /* return immediately since reset is imminent */ | |
1858 | return IRQ_HANDLED; | |
1859 | } | |
1860 | ||
288379f0 | 1861 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1862 | adapter->total_tx_bytes = 0; |
1863 | adapter->total_tx_packets = 0; | |
1864 | adapter->total_rx_bytes = 0; | |
1865 | adapter->total_rx_packets = 0; | |
288379f0 | 1866 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1867 | } |
1868 | ||
1869 | return IRQ_HANDLED; | |
1870 | } | |
1871 | ||
8bb62869 | 1872 | static irqreturn_t e1000_msix_other(int __always_unused irq, void *data) |
4662e82b BA |
1873 | { |
1874 | struct net_device *netdev = data; | |
1875 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1876 | struct e1000_hw *hw = &adapter->hw; | |
1877 | u32 icr = er32(ICR); | |
1878 | ||
1879 | if (!(icr & E1000_ICR_INT_ASSERTED)) { | |
a3c69fef JB |
1880 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1881 | ew32(IMS, E1000_IMS_OTHER); | |
4662e82b BA |
1882 | return IRQ_NONE; |
1883 | } | |
1884 | ||
1885 | if (icr & adapter->eiac_mask) | |
1886 | ew32(ICS, (icr & adapter->eiac_mask)); | |
1887 | ||
1888 | if (icr & E1000_ICR_OTHER) { | |
1889 | if (!(icr & E1000_ICR_LSC)) | |
1890 | goto no_link_interrupt; | |
f92518dd | 1891 | hw->mac.get_link_status = true; |
4662e82b BA |
1892 | /* guard against interrupt when we're going down */ |
1893 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1894 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1895 | } | |
1896 | ||
1897 | no_link_interrupt: | |
a3c69fef JB |
1898 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1899 | ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); | |
4662e82b BA |
1900 | |
1901 | return IRQ_HANDLED; | |
1902 | } | |
1903 | ||
8bb62869 | 1904 | static irqreturn_t e1000_intr_msix_tx(int __always_unused irq, void *data) |
4662e82b BA |
1905 | { |
1906 | struct net_device *netdev = data; | |
1907 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1908 | struct e1000_hw *hw = &adapter->hw; | |
1909 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1910 | ||
4662e82b BA |
1911 | adapter->total_tx_bytes = 0; |
1912 | adapter->total_tx_packets = 0; | |
1913 | ||
55aa6985 | 1914 | if (!e1000_clean_tx_irq(tx_ring)) |
4662e82b BA |
1915 | /* Ring was not completely cleaned, so fire another interrupt */ |
1916 | ew32(ICS, tx_ring->ims_val); | |
1917 | ||
1918 | return IRQ_HANDLED; | |
1919 | } | |
1920 | ||
8bb62869 | 1921 | static irqreturn_t e1000_intr_msix_rx(int __always_unused irq, void *data) |
4662e82b BA |
1922 | { |
1923 | struct net_device *netdev = data; | |
1924 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
55aa6985 | 1925 | struct e1000_ring *rx_ring = adapter->rx_ring; |
4662e82b BA |
1926 | |
1927 | /* Write the ITR value calculated at the end of the | |
1928 | * previous interrupt. | |
1929 | */ | |
55aa6985 BA |
1930 | if (rx_ring->set_itr) { |
1931 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1932 | rx_ring->itr_register); | |
1933 | rx_ring->set_itr = 0; | |
4662e82b BA |
1934 | } |
1935 | ||
288379f0 | 1936 | if (napi_schedule_prep(&adapter->napi)) { |
4662e82b BA |
1937 | adapter->total_rx_bytes = 0; |
1938 | adapter->total_rx_packets = 0; | |
288379f0 | 1939 | __napi_schedule(&adapter->napi); |
4662e82b BA |
1940 | } |
1941 | return IRQ_HANDLED; | |
1942 | } | |
1943 | ||
1944 | /** | |
1945 | * e1000_configure_msix - Configure MSI-X hardware | |
1946 | * | |
1947 | * e1000_configure_msix sets up the hardware to properly | |
1948 | * generate MSI-X interrupts. | |
1949 | **/ | |
1950 | static void e1000_configure_msix(struct e1000_adapter *adapter) | |
1951 | { | |
1952 | struct e1000_hw *hw = &adapter->hw; | |
1953 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1954 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1955 | int vector = 0; | |
1956 | u32 ctrl_ext, ivar = 0; | |
1957 | ||
1958 | adapter->eiac_mask = 0; | |
1959 | ||
1960 | /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ | |
1961 | if (hw->mac.type == e1000_82574) { | |
1962 | u32 rfctl = er32(RFCTL); | |
1963 | rfctl |= E1000_RFCTL_ACK_DIS; | |
1964 | ew32(RFCTL, rfctl); | |
1965 | } | |
1966 | ||
4662e82b BA |
1967 | /* Configure Rx vector */ |
1968 | rx_ring->ims_val = E1000_IMS_RXQ0; | |
1969 | adapter->eiac_mask |= rx_ring->ims_val; | |
1970 | if (rx_ring->itr_val) | |
1971 | writel(1000000000 / (rx_ring->itr_val * 256), | |
c5083cf6 | 1972 | rx_ring->itr_register); |
4662e82b | 1973 | else |
c5083cf6 | 1974 | writel(1, rx_ring->itr_register); |
4662e82b BA |
1975 | ivar = E1000_IVAR_INT_ALLOC_VALID | vector; |
1976 | ||
1977 | /* Configure Tx vector */ | |
1978 | tx_ring->ims_val = E1000_IMS_TXQ0; | |
1979 | vector++; | |
1980 | if (tx_ring->itr_val) | |
1981 | writel(1000000000 / (tx_ring->itr_val * 256), | |
c5083cf6 | 1982 | tx_ring->itr_register); |
4662e82b | 1983 | else |
c5083cf6 | 1984 | writel(1, tx_ring->itr_register); |
4662e82b BA |
1985 | adapter->eiac_mask |= tx_ring->ims_val; |
1986 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); | |
1987 | ||
1988 | /* set vector for Other Causes, e.g. link changes */ | |
1989 | vector++; | |
1990 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); | |
1991 | if (rx_ring->itr_val) | |
1992 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1993 | hw->hw_addr + E1000_EITR_82574(vector)); | |
1994 | else | |
1995 | writel(1, hw->hw_addr + E1000_EITR_82574(vector)); | |
1996 | ||
1997 | /* Cause Tx interrupts on every write back */ | |
1998 | ivar |= (1 << 31); | |
1999 | ||
2000 | ew32(IVAR, ivar); | |
2001 | ||
2002 | /* enable MSI-X PBA support */ | |
2003 | ctrl_ext = er32(CTRL_EXT); | |
2004 | ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; | |
2005 | ||
2006 | /* Auto-Mask Other interrupts upon ICR read */ | |
4662e82b BA |
2007 | ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); |
2008 | ctrl_ext |= E1000_CTRL_EXT_EIAME; | |
2009 | ew32(CTRL_EXT, ctrl_ext); | |
2010 | e1e_flush(); | |
2011 | } | |
2012 | ||
2013 | void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) | |
2014 | { | |
2015 | if (adapter->msix_entries) { | |
2016 | pci_disable_msix(adapter->pdev); | |
2017 | kfree(adapter->msix_entries); | |
2018 | adapter->msix_entries = NULL; | |
2019 | } else if (adapter->flags & FLAG_MSI_ENABLED) { | |
2020 | pci_disable_msi(adapter->pdev); | |
2021 | adapter->flags &= ~FLAG_MSI_ENABLED; | |
2022 | } | |
4662e82b BA |
2023 | } |
2024 | ||
2025 | /** | |
2026 | * e1000e_set_interrupt_capability - set MSI or MSI-X if supported | |
2027 | * | |
2028 | * Attempt to configure interrupts using the best available | |
2029 | * capabilities of the hardware and kernel. | |
2030 | **/ | |
2031 | void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) | |
2032 | { | |
2033 | int err; | |
8e86acd7 | 2034 | int i; |
4662e82b BA |
2035 | |
2036 | switch (adapter->int_mode) { | |
2037 | case E1000E_INT_MODE_MSIX: | |
2038 | if (adapter->flags & FLAG_HAS_MSIX) { | |
8e86acd7 JK |
2039 | adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
2040 | adapter->msix_entries = kcalloc(adapter->num_vectors, | |
17e813ec BA |
2041 | sizeof(struct |
2042 | msix_entry), | |
2043 | GFP_KERNEL); | |
4662e82b | 2044 | if (adapter->msix_entries) { |
0cc7c959 AG |
2045 | struct e1000_adapter *a = adapter; |
2046 | ||
8e86acd7 | 2047 | for (i = 0; i < adapter->num_vectors; i++) |
4662e82b BA |
2048 | adapter->msix_entries[i].entry = i; |
2049 | ||
0cc7c959 AG |
2050 | err = pci_enable_msix_range(a->pdev, |
2051 | a->msix_entries, | |
2052 | a->num_vectors, | |
2053 | a->num_vectors); | |
2054 | if (err > 0) | |
4662e82b BA |
2055 | return; |
2056 | } | |
2057 | /* MSI-X failed, so fall through and try MSI */ | |
ef456f85 | 2058 | e_err("Failed to initialize MSI-X interrupts. Falling back to MSI interrupts.\n"); |
4662e82b BA |
2059 | e1000e_reset_interrupt_capability(adapter); |
2060 | } | |
2061 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
2062 | /* Fall through */ | |
2063 | case E1000E_INT_MODE_MSI: | |
2064 | if (!pci_enable_msi(adapter->pdev)) { | |
2065 | adapter->flags |= FLAG_MSI_ENABLED; | |
2066 | } else { | |
2067 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
ef456f85 | 2068 | e_err("Failed to initialize MSI interrupts. Falling back to legacy interrupts.\n"); |
4662e82b BA |
2069 | } |
2070 | /* Fall through */ | |
2071 | case E1000E_INT_MODE_LEGACY: | |
2072 | /* Don't do anything; this is the system default */ | |
2073 | break; | |
2074 | } | |
8e86acd7 JK |
2075 | |
2076 | /* store the number of vectors being used */ | |
2077 | adapter->num_vectors = 1; | |
4662e82b BA |
2078 | } |
2079 | ||
2080 | /** | |
2081 | * e1000_request_msix - Initialize MSI-X interrupts | |
2082 | * | |
2083 | * e1000_request_msix allocates MSI-X vectors and requests interrupts from the | |
2084 | * kernel. | |
2085 | **/ | |
2086 | static int e1000_request_msix(struct e1000_adapter *adapter) | |
2087 | { | |
2088 | struct net_device *netdev = adapter->netdev; | |
2089 | int err = 0, vector = 0; | |
2090 | ||
2091 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
79f5e840 BA |
2092 | snprintf(adapter->rx_ring->name, |
2093 | sizeof(adapter->rx_ring->name) - 1, | |
2094 | "%s-rx-0", netdev->name); | |
4662e82b BA |
2095 | else |
2096 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
2097 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 2098 | e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
4662e82b BA |
2099 | netdev); |
2100 | if (err) | |
5015e53a | 2101 | return err; |
c5083cf6 BA |
2102 | adapter->rx_ring->itr_register = adapter->hw.hw_addr + |
2103 | E1000_EITR_82574(vector); | |
4662e82b BA |
2104 | adapter->rx_ring->itr_val = adapter->itr; |
2105 | vector++; | |
2106 | ||
2107 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
79f5e840 BA |
2108 | snprintf(adapter->tx_ring->name, |
2109 | sizeof(adapter->tx_ring->name) - 1, | |
2110 | "%s-tx-0", netdev->name); | |
4662e82b BA |
2111 | else |
2112 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
2113 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 2114 | e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
4662e82b BA |
2115 | netdev); |
2116 | if (err) | |
5015e53a | 2117 | return err; |
c5083cf6 BA |
2118 | adapter->tx_ring->itr_register = adapter->hw.hw_addr + |
2119 | E1000_EITR_82574(vector); | |
4662e82b BA |
2120 | adapter->tx_ring->itr_val = adapter->itr; |
2121 | vector++; | |
2122 | ||
2123 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 2124 | e1000_msix_other, 0, netdev->name, netdev); |
4662e82b | 2125 | if (err) |
5015e53a | 2126 | return err; |
4662e82b BA |
2127 | |
2128 | e1000_configure_msix(adapter); | |
5015e53a | 2129 | |
4662e82b | 2130 | return 0; |
4662e82b BA |
2131 | } |
2132 | ||
f8d59f78 BA |
2133 | /** |
2134 | * e1000_request_irq - initialize interrupts | |
2135 | * | |
2136 | * Attempts to configure interrupts using the best available | |
2137 | * capabilities of the hardware and kernel. | |
2138 | **/ | |
bc7f75fa AK |
2139 | static int e1000_request_irq(struct e1000_adapter *adapter) |
2140 | { | |
2141 | struct net_device *netdev = adapter->netdev; | |
bc7f75fa AK |
2142 | int err; |
2143 | ||
4662e82b BA |
2144 | if (adapter->msix_entries) { |
2145 | err = e1000_request_msix(adapter); | |
2146 | if (!err) | |
2147 | return err; | |
2148 | /* fall back to MSI */ | |
2149 | e1000e_reset_interrupt_capability(adapter); | |
2150 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
2151 | e1000e_set_interrupt_capability(adapter); | |
bc7f75fa | 2152 | } |
4662e82b | 2153 | if (adapter->flags & FLAG_MSI_ENABLED) { |
a0607fd3 | 2154 | err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
4662e82b BA |
2155 | netdev->name, netdev); |
2156 | if (!err) | |
2157 | return err; | |
bc7f75fa | 2158 | |
4662e82b BA |
2159 | /* fall back to legacy interrupt */ |
2160 | e1000e_reset_interrupt_capability(adapter); | |
2161 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
bc7f75fa AK |
2162 | } |
2163 | ||
a0607fd3 | 2164 | err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
4662e82b BA |
2165 | netdev->name, netdev); |
2166 | if (err) | |
2167 | e_err("Unable to allocate interrupt, Error: %d\n", err); | |
2168 | ||
bc7f75fa AK |
2169 | return err; |
2170 | } | |
2171 | ||
2172 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
2173 | { | |
2174 | struct net_device *netdev = adapter->netdev; | |
2175 | ||
4662e82b BA |
2176 | if (adapter->msix_entries) { |
2177 | int vector = 0; | |
2178 | ||
2179 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
2180 | vector++; | |
2181 | ||
2182 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
2183 | vector++; | |
2184 | ||
2185 | /* Other Causes interrupt vector */ | |
2186 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
2187 | return; | |
bc7f75fa | 2188 | } |
4662e82b BA |
2189 | |
2190 | free_irq(adapter->pdev->irq, netdev); | |
bc7f75fa AK |
2191 | } |
2192 | ||
2193 | /** | |
2194 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
2195 | **/ | |
2196 | static void e1000_irq_disable(struct e1000_adapter *adapter) | |
2197 | { | |
2198 | struct e1000_hw *hw = &adapter->hw; | |
2199 | ||
bc7f75fa | 2200 | ew32(IMC, ~0); |
4662e82b BA |
2201 | if (adapter->msix_entries) |
2202 | ew32(EIAC_82574, 0); | |
bc7f75fa | 2203 | e1e_flush(); |
8e86acd7 JK |
2204 | |
2205 | if (adapter->msix_entries) { | |
2206 | int i; | |
2207 | for (i = 0; i < adapter->num_vectors; i++) | |
2208 | synchronize_irq(adapter->msix_entries[i].vector); | |
2209 | } else { | |
2210 | synchronize_irq(adapter->pdev->irq); | |
2211 | } | |
bc7f75fa AK |
2212 | } |
2213 | ||
2214 | /** | |
2215 | * e1000_irq_enable - Enable default interrupt generation settings | |
2216 | **/ | |
2217 | static void e1000_irq_enable(struct e1000_adapter *adapter) | |
2218 | { | |
2219 | struct e1000_hw *hw = &adapter->hw; | |
2220 | ||
4662e82b BA |
2221 | if (adapter->msix_entries) { |
2222 | ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); | |
2223 | ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); | |
94fb848b BA |
2224 | } else if (hw->mac.type == e1000_pch_lpt) { |
2225 | ew32(IMS, IMS_ENABLE_MASK | E1000_IMS_ECCER); | |
4662e82b BA |
2226 | } else { |
2227 | ew32(IMS, IMS_ENABLE_MASK); | |
2228 | } | |
74ef9c39 | 2229 | e1e_flush(); |
bc7f75fa AK |
2230 | } |
2231 | ||
2232 | /** | |
31dbe5b4 | 2233 | * e1000e_get_hw_control - get control of the h/w from f/w |
bc7f75fa AK |
2234 | * @adapter: address of board private structure |
2235 | * | |
31dbe5b4 | 2236 | * e1000e_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
2237 | * For ASF and Pass Through versions of f/w this means that |
2238 | * the driver is loaded. For AMT version (only with 82573) | |
2239 | * of the f/w this means that the network i/f is open. | |
2240 | **/ | |
31dbe5b4 | 2241 | void e1000e_get_hw_control(struct e1000_adapter *adapter) |
bc7f75fa AK |
2242 | { |
2243 | struct e1000_hw *hw = &adapter->hw; | |
2244 | u32 ctrl_ext; | |
2245 | u32 swsm; | |
2246 | ||
2247 | /* Let firmware know the driver has taken over */ | |
2248 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
2249 | swsm = er32(SWSM); | |
2250 | ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); | |
2251 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
2252 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 2253 | ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
2254 | } |
2255 | } | |
2256 | ||
2257 | /** | |
31dbe5b4 | 2258 | * e1000e_release_hw_control - release control of the h/w to f/w |
bc7f75fa AK |
2259 | * @adapter: address of board private structure |
2260 | * | |
31dbe5b4 | 2261 | * e1000e_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
2262 | * For ASF and Pass Through versions of f/w this means that the |
2263 | * driver is no longer loaded. For AMT version (only with 82573) i | |
2264 | * of the f/w this means that the network i/f is closed. | |
2265 | * | |
2266 | **/ | |
31dbe5b4 | 2267 | void e1000e_release_hw_control(struct e1000_adapter *adapter) |
bc7f75fa AK |
2268 | { |
2269 | struct e1000_hw *hw = &adapter->hw; | |
2270 | u32 ctrl_ext; | |
2271 | u32 swsm; | |
2272 | ||
2273 | /* Let firmware taken over control of h/w */ | |
2274 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
2275 | swsm = er32(SWSM); | |
2276 | ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); | |
2277 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
2278 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 2279 | ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
2280 | } |
2281 | } | |
2282 | ||
bc7f75fa | 2283 | /** |
49ce9c2c | 2284 | * e1000_alloc_ring_dma - allocate memory for a ring structure |
bc7f75fa AK |
2285 | **/ |
2286 | static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, | |
2287 | struct e1000_ring *ring) | |
2288 | { | |
2289 | struct pci_dev *pdev = adapter->pdev; | |
2290 | ||
2291 | ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, | |
2292 | GFP_KERNEL); | |
2293 | if (!ring->desc) | |
2294 | return -ENOMEM; | |
2295 | ||
2296 | return 0; | |
2297 | } | |
2298 | ||
2299 | /** | |
2300 | * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) | |
55aa6985 | 2301 | * @tx_ring: Tx descriptor ring |
bc7f75fa AK |
2302 | * |
2303 | * Return 0 on success, negative on failure | |
2304 | **/ | |
55aa6985 | 2305 | int e1000e_setup_tx_resources(struct e1000_ring *tx_ring) |
bc7f75fa | 2306 | { |
55aa6985 | 2307 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
2308 | int err = -ENOMEM, size; |
2309 | ||
2310 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
89bf67f1 | 2311 | tx_ring->buffer_info = vzalloc(size); |
bc7f75fa AK |
2312 | if (!tx_ring->buffer_info) |
2313 | goto err; | |
bc7f75fa AK |
2314 | |
2315 | /* round up to nearest 4K */ | |
2316 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); | |
2317 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
2318 | ||
2319 | err = e1000_alloc_ring_dma(adapter, tx_ring); | |
2320 | if (err) | |
2321 | goto err; | |
2322 | ||
2323 | tx_ring->next_to_use = 0; | |
2324 | tx_ring->next_to_clean = 0; | |
bc7f75fa AK |
2325 | |
2326 | return 0; | |
2327 | err: | |
2328 | vfree(tx_ring->buffer_info); | |
44defeb3 | 2329 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
2330 | return err; |
2331 | } | |
2332 | ||
2333 | /** | |
2334 | * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) | |
55aa6985 | 2335 | * @rx_ring: Rx descriptor ring |
bc7f75fa AK |
2336 | * |
2337 | * Returns 0 on success, negative on failure | |
2338 | **/ | |
55aa6985 | 2339 | int e1000e_setup_rx_resources(struct e1000_ring *rx_ring) |
bc7f75fa | 2340 | { |
55aa6985 | 2341 | struct e1000_adapter *adapter = rx_ring->adapter; |
47f44e40 AK |
2342 | struct e1000_buffer *buffer_info; |
2343 | int i, size, desc_len, err = -ENOMEM; | |
bc7f75fa AK |
2344 | |
2345 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
89bf67f1 | 2346 | rx_ring->buffer_info = vzalloc(size); |
bc7f75fa AK |
2347 | if (!rx_ring->buffer_info) |
2348 | goto err; | |
bc7f75fa | 2349 | |
47f44e40 AK |
2350 | for (i = 0; i < rx_ring->count; i++) { |
2351 | buffer_info = &rx_ring->buffer_info[i]; | |
2352 | buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, | |
2353 | sizeof(struct e1000_ps_page), | |
2354 | GFP_KERNEL); | |
2355 | if (!buffer_info->ps_pages) | |
2356 | goto err_pages; | |
2357 | } | |
bc7f75fa AK |
2358 | |
2359 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
2360 | ||
2361 | /* Round up to nearest 4K */ | |
2362 | rx_ring->size = rx_ring->count * desc_len; | |
2363 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
2364 | ||
2365 | err = e1000_alloc_ring_dma(adapter, rx_ring); | |
2366 | if (err) | |
47f44e40 | 2367 | goto err_pages; |
bc7f75fa AK |
2368 | |
2369 | rx_ring->next_to_clean = 0; | |
2370 | rx_ring->next_to_use = 0; | |
2371 | rx_ring->rx_skb_top = NULL; | |
2372 | ||
2373 | return 0; | |
47f44e40 AK |
2374 | |
2375 | err_pages: | |
2376 | for (i = 0; i < rx_ring->count; i++) { | |
2377 | buffer_info = &rx_ring->buffer_info[i]; | |
2378 | kfree(buffer_info->ps_pages); | |
2379 | } | |
bc7f75fa AK |
2380 | err: |
2381 | vfree(rx_ring->buffer_info); | |
e9262447 | 2382 | e_err("Unable to allocate memory for the receive descriptor ring\n"); |
bc7f75fa AK |
2383 | return err; |
2384 | } | |
2385 | ||
2386 | /** | |
2387 | * e1000_clean_tx_ring - Free Tx Buffers | |
55aa6985 | 2388 | * @tx_ring: Tx descriptor ring |
bc7f75fa | 2389 | **/ |
55aa6985 | 2390 | static void e1000_clean_tx_ring(struct e1000_ring *tx_ring) |
bc7f75fa | 2391 | { |
55aa6985 | 2392 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
2393 | struct e1000_buffer *buffer_info; |
2394 | unsigned long size; | |
2395 | unsigned int i; | |
2396 | ||
2397 | for (i = 0; i < tx_ring->count; i++) { | |
2398 | buffer_info = &tx_ring->buffer_info[i]; | |
55aa6985 | 2399 | e1000_put_txbuf(tx_ring, buffer_info); |
bc7f75fa AK |
2400 | } |
2401 | ||
3f0cfa3b | 2402 | netdev_reset_queue(adapter->netdev); |
bc7f75fa AK |
2403 | size = sizeof(struct e1000_buffer) * tx_ring->count; |
2404 | memset(tx_ring->buffer_info, 0, size); | |
2405 | ||
2406 | memset(tx_ring->desc, 0, tx_ring->size); | |
2407 | ||
2408 | tx_ring->next_to_use = 0; | |
2409 | tx_ring->next_to_clean = 0; | |
2410 | ||
c5083cf6 | 2411 | writel(0, tx_ring->head); |
b485dbae | 2412 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) |
bdc125f7 BA |
2413 | e1000e_update_tdt_wa(tx_ring, 0); |
2414 | else | |
2415 | writel(0, tx_ring->tail); | |
bc7f75fa AK |
2416 | } |
2417 | ||
2418 | /** | |
2419 | * e1000e_free_tx_resources - Free Tx Resources per Queue | |
55aa6985 | 2420 | * @tx_ring: Tx descriptor ring |
bc7f75fa AK |
2421 | * |
2422 | * Free all transmit software resources | |
2423 | **/ | |
55aa6985 | 2424 | void e1000e_free_tx_resources(struct e1000_ring *tx_ring) |
bc7f75fa | 2425 | { |
55aa6985 | 2426 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa | 2427 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa | 2428 | |
55aa6985 | 2429 | e1000_clean_tx_ring(tx_ring); |
bc7f75fa AK |
2430 | |
2431 | vfree(tx_ring->buffer_info); | |
2432 | tx_ring->buffer_info = NULL; | |
2433 | ||
2434 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, | |
2435 | tx_ring->dma); | |
2436 | tx_ring->desc = NULL; | |
2437 | } | |
2438 | ||
2439 | /** | |
2440 | * e1000e_free_rx_resources - Free Rx Resources | |
55aa6985 | 2441 | * @rx_ring: Rx descriptor ring |
bc7f75fa AK |
2442 | * |
2443 | * Free all receive software resources | |
2444 | **/ | |
55aa6985 | 2445 | void e1000e_free_rx_resources(struct e1000_ring *rx_ring) |
bc7f75fa | 2446 | { |
55aa6985 | 2447 | struct e1000_adapter *adapter = rx_ring->adapter; |
bc7f75fa | 2448 | struct pci_dev *pdev = adapter->pdev; |
47f44e40 | 2449 | int i; |
bc7f75fa | 2450 | |
55aa6985 | 2451 | e1000_clean_rx_ring(rx_ring); |
bc7f75fa | 2452 | |
b1cdfead | 2453 | for (i = 0; i < rx_ring->count; i++) |
47f44e40 | 2454 | kfree(rx_ring->buffer_info[i].ps_pages); |
47f44e40 | 2455 | |
bc7f75fa AK |
2456 | vfree(rx_ring->buffer_info); |
2457 | rx_ring->buffer_info = NULL; | |
2458 | ||
bc7f75fa AK |
2459 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
2460 | rx_ring->dma); | |
2461 | rx_ring->desc = NULL; | |
2462 | } | |
2463 | ||
2464 | /** | |
2465 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
489815ce AK |
2466 | * @adapter: pointer to adapter |
2467 | * @itr_setting: current adapter->itr | |
2468 | * @packets: the number of packets during this measurement interval | |
2469 | * @bytes: the number of bytes during this measurement interval | |
2470 | * | |
bc7f75fa AK |
2471 | * Stores a new ITR value based on packets and byte |
2472 | * counts during the last interrupt. The advantage of per interrupt | |
2473 | * computation is faster updates and more accurate ITR for the current | |
2474 | * traffic pattern. Constants in this function were computed | |
2475 | * based on theoretical maximum wire speed and thresholds were set based | |
2476 | * on testing data as well as attempting to minimize response time | |
4662e82b BA |
2477 | * while increasing bulk throughput. This functionality is controlled |
2478 | * by the InterruptThrottleRate module parameter. | |
bc7f75fa | 2479 | **/ |
8bb62869 | 2480 | static unsigned int e1000_update_itr(u16 itr_setting, int packets, int bytes) |
bc7f75fa AK |
2481 | { |
2482 | unsigned int retval = itr_setting; | |
2483 | ||
2484 | if (packets == 0) | |
5015e53a | 2485 | return itr_setting; |
bc7f75fa AK |
2486 | |
2487 | switch (itr_setting) { | |
2488 | case lowest_latency: | |
2489 | /* handle TSO and jumbo frames */ | |
362e20ca | 2490 | if (bytes / packets > 8000) |
bc7f75fa | 2491 | retval = bulk_latency; |
b1cdfead | 2492 | else if ((packets < 5) && (bytes > 512)) |
bc7f75fa | 2493 | retval = low_latency; |
bc7f75fa | 2494 | break; |
e80bd1d1 | 2495 | case low_latency: /* 50 usec aka 20000 ints/s */ |
bc7f75fa AK |
2496 | if (bytes > 10000) { |
2497 | /* this if handles the TSO accounting */ | |
362e20ca | 2498 | if (bytes / packets > 8000) |
bc7f75fa | 2499 | retval = bulk_latency; |
362e20ca | 2500 | else if ((packets < 10) || ((bytes / packets) > 1200)) |
bc7f75fa | 2501 | retval = bulk_latency; |
b1cdfead | 2502 | else if ((packets > 35)) |
bc7f75fa | 2503 | retval = lowest_latency; |
362e20ca | 2504 | } else if (bytes / packets > 2000) { |
bc7f75fa AK |
2505 | retval = bulk_latency; |
2506 | } else if (packets <= 2 && bytes < 512) { | |
2507 | retval = lowest_latency; | |
2508 | } | |
2509 | break; | |
e80bd1d1 | 2510 | case bulk_latency: /* 250 usec aka 4000 ints/s */ |
bc7f75fa | 2511 | if (bytes > 25000) { |
b1cdfead | 2512 | if (packets > 35) |
bc7f75fa | 2513 | retval = low_latency; |
bc7f75fa AK |
2514 | } else if (bytes < 6000) { |
2515 | retval = low_latency; | |
2516 | } | |
2517 | break; | |
2518 | } | |
2519 | ||
bc7f75fa AK |
2520 | return retval; |
2521 | } | |
2522 | ||
2523 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2524 | { | |
bc7f75fa AK |
2525 | u16 current_itr; |
2526 | u32 new_itr = adapter->itr; | |
2527 | ||
2528 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2529 | if (adapter->link_speed != SPEED_1000) { | |
2530 | current_itr = 0; | |
2531 | new_itr = 4000; | |
2532 | goto set_itr_now; | |
2533 | } | |
2534 | ||
828bac87 BA |
2535 | if (adapter->flags2 & FLAG2_DISABLE_AIM) { |
2536 | new_itr = 0; | |
2537 | goto set_itr_now; | |
2538 | } | |
2539 | ||
8bb62869 BA |
2540 | adapter->tx_itr = e1000_update_itr(adapter->tx_itr, |
2541 | adapter->total_tx_packets, | |
2542 | adapter->total_tx_bytes); | |
bc7f75fa AK |
2543 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2544 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2545 | adapter->tx_itr = low_latency; | |
2546 | ||
8bb62869 BA |
2547 | adapter->rx_itr = e1000_update_itr(adapter->rx_itr, |
2548 | adapter->total_rx_packets, | |
2549 | adapter->total_rx_bytes); | |
bc7f75fa AK |
2550 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2551 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2552 | adapter->rx_itr = low_latency; | |
2553 | ||
2554 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2555 | ||
bc7f75fa | 2556 | /* counts and packets in update_itr are dependent on these numbers */ |
33550cec | 2557 | switch (current_itr) { |
bc7f75fa AK |
2558 | case lowest_latency: |
2559 | new_itr = 70000; | |
2560 | break; | |
2561 | case low_latency: | |
e80bd1d1 | 2562 | new_itr = 20000; /* aka hwitr = ~200 */ |
bc7f75fa AK |
2563 | break; |
2564 | case bulk_latency: | |
2565 | new_itr = 4000; | |
2566 | break; | |
2567 | default: | |
2568 | break; | |
2569 | } | |
2570 | ||
2571 | set_itr_now: | |
2572 | if (new_itr != adapter->itr) { | |
e921eb1a | 2573 | /* this attempts to bias the interrupt rate towards Bulk |
bc7f75fa | 2574 | * by adding intermediate steps when interrupt rate is |
ad68076e BA |
2575 | * increasing |
2576 | */ | |
bc7f75fa | 2577 | new_itr = new_itr > adapter->itr ? |
f0ff4398 | 2578 | min(adapter->itr + (new_itr >> 2), new_itr) : new_itr; |
bc7f75fa | 2579 | adapter->itr = new_itr; |
4662e82b BA |
2580 | adapter->rx_ring->itr_val = new_itr; |
2581 | if (adapter->msix_entries) | |
2582 | adapter->rx_ring->set_itr = 1; | |
2583 | else | |
e3d14b08 | 2584 | e1000e_write_itr(adapter, new_itr); |
bc7f75fa AK |
2585 | } |
2586 | } | |
2587 | ||
22a4cca2 MV |
2588 | /** |
2589 | * e1000e_write_itr - write the ITR value to the appropriate registers | |
2590 | * @adapter: address of board private structure | |
2591 | * @itr: new ITR value to program | |
2592 | * | |
2593 | * e1000e_write_itr determines if the adapter is in MSI-X mode | |
2594 | * and, if so, writes the EITR registers with the ITR value. | |
2595 | * Otherwise, it writes the ITR value into the ITR register. | |
2596 | **/ | |
2597 | void e1000e_write_itr(struct e1000_adapter *adapter, u32 itr) | |
2598 | { | |
2599 | struct e1000_hw *hw = &adapter->hw; | |
2600 | u32 new_itr = itr ? 1000000000 / (itr * 256) : 0; | |
2601 | ||
2602 | if (adapter->msix_entries) { | |
2603 | int vector; | |
2604 | ||
2605 | for (vector = 0; vector < adapter->num_vectors; vector++) | |
2606 | writel(new_itr, hw->hw_addr + E1000_EITR_82574(vector)); | |
2607 | } else { | |
2608 | ew32(ITR, new_itr); | |
2609 | } | |
2610 | } | |
2611 | ||
4662e82b BA |
2612 | /** |
2613 | * e1000_alloc_queues - Allocate memory for all rings | |
2614 | * @adapter: board private structure to initialize | |
2615 | **/ | |
9f9a12f8 | 2616 | static int e1000_alloc_queues(struct e1000_adapter *adapter) |
4662e82b | 2617 | { |
55aa6985 BA |
2618 | int size = sizeof(struct e1000_ring); |
2619 | ||
2620 | adapter->tx_ring = kzalloc(size, GFP_KERNEL); | |
4662e82b BA |
2621 | if (!adapter->tx_ring) |
2622 | goto err; | |
55aa6985 BA |
2623 | adapter->tx_ring->count = adapter->tx_ring_count; |
2624 | adapter->tx_ring->adapter = adapter; | |
4662e82b | 2625 | |
55aa6985 | 2626 | adapter->rx_ring = kzalloc(size, GFP_KERNEL); |
4662e82b BA |
2627 | if (!adapter->rx_ring) |
2628 | goto err; | |
55aa6985 BA |
2629 | adapter->rx_ring->count = adapter->rx_ring_count; |
2630 | adapter->rx_ring->adapter = adapter; | |
4662e82b BA |
2631 | |
2632 | return 0; | |
2633 | err: | |
2634 | e_err("Unable to allocate memory for queues\n"); | |
2635 | kfree(adapter->rx_ring); | |
2636 | kfree(adapter->tx_ring); | |
2637 | return -ENOMEM; | |
2638 | } | |
2639 | ||
bc7f75fa | 2640 | /** |
c58c8a78 | 2641 | * e1000e_poll - NAPI Rx polling callback |
ad68076e | 2642 | * @napi: struct associated with this polling callback |
c58c8a78 | 2643 | * @weight: number of packets driver is allowed to process this poll |
bc7f75fa | 2644 | **/ |
c58c8a78 | 2645 | static int e1000e_poll(struct napi_struct *napi, int weight) |
bc7f75fa | 2646 | { |
c58c8a78 BA |
2647 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, |
2648 | napi); | |
4662e82b | 2649 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa | 2650 | struct net_device *poll_dev = adapter->netdev; |
679e8a0f | 2651 | int tx_cleaned = 1, work_done = 0; |
bc7f75fa | 2652 | |
4cf1653a | 2653 | adapter = netdev_priv(poll_dev); |
bc7f75fa | 2654 | |
c58c8a78 BA |
2655 | if (!adapter->msix_entries || |
2656 | (adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) | |
2657 | tx_cleaned = e1000_clean_tx_irq(adapter->tx_ring); | |
4662e82b | 2658 | |
c58c8a78 | 2659 | adapter->clean_rx(adapter->rx_ring, &work_done, weight); |
d2c7ddd6 | 2660 | |
12d04a3c | 2661 | if (!tx_cleaned) |
c58c8a78 | 2662 | work_done = weight; |
bc7f75fa | 2663 | |
c58c8a78 BA |
2664 | /* If weight not fully consumed, exit the polling mode */ |
2665 | if (work_done < weight) { | |
bc7f75fa AK |
2666 | if (adapter->itr_setting & 3) |
2667 | e1000_set_itr(adapter); | |
288379f0 | 2668 | napi_complete(napi); |
a3c69fef JB |
2669 | if (!test_bit(__E1000_DOWN, &adapter->state)) { |
2670 | if (adapter->msix_entries) | |
2671 | ew32(IMS, adapter->rx_ring->ims_val); | |
2672 | else | |
2673 | e1000_irq_enable(adapter); | |
2674 | } | |
bc7f75fa AK |
2675 | } |
2676 | ||
2677 | return work_done; | |
2678 | } | |
2679 | ||
80d5c368 | 2680 | static int e1000_vlan_rx_add_vid(struct net_device *netdev, |
603cdca9 | 2681 | __always_unused __be16 proto, u16 vid) |
bc7f75fa AK |
2682 | { |
2683 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2684 | struct e1000_hw *hw = &adapter->hw; | |
2685 | u32 vfta, index; | |
2686 | ||
2687 | /* don't update vlan cookie if already programmed */ | |
2688 | if ((adapter->hw.mng_cookie.status & | |
2689 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2690 | (vid == adapter->mng_vlan_id)) | |
8e586137 | 2691 | return 0; |
caaddaf8 | 2692 | |
bc7f75fa | 2693 | /* add VID to filter table */ |
caaddaf8 BA |
2694 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2695 | index = (vid >> 5) & 0x7F; | |
2696 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2697 | vfta |= (1 << (vid & 0x1F)); | |
2698 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2699 | } | |
86d70e53 JK |
2700 | |
2701 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2702 | |
2703 | return 0; | |
bc7f75fa AK |
2704 | } |
2705 | ||
80d5c368 | 2706 | static int e1000_vlan_rx_kill_vid(struct net_device *netdev, |
603cdca9 | 2707 | __always_unused __be16 proto, u16 vid) |
bc7f75fa AK |
2708 | { |
2709 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2710 | struct e1000_hw *hw = &adapter->hw; | |
2711 | u32 vfta, index; | |
2712 | ||
bc7f75fa AK |
2713 | if ((adapter->hw.mng_cookie.status & |
2714 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2715 | (vid == adapter->mng_vlan_id)) { | |
2716 | /* release control to f/w */ | |
31dbe5b4 | 2717 | e1000e_release_hw_control(adapter); |
8e586137 | 2718 | return 0; |
bc7f75fa AK |
2719 | } |
2720 | ||
2721 | /* remove VID from filter table */ | |
caaddaf8 BA |
2722 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2723 | index = (vid >> 5) & 0x7F; | |
2724 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2725 | vfta &= ~(1 << (vid & 0x1F)); | |
2726 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2727 | } | |
86d70e53 JK |
2728 | |
2729 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2730 | |
2731 | return 0; | |
bc7f75fa AK |
2732 | } |
2733 | ||
86d70e53 JK |
2734 | /** |
2735 | * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering | |
2736 | * @adapter: board private structure to initialize | |
2737 | **/ | |
2738 | static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter) | |
bc7f75fa AK |
2739 | { |
2740 | struct net_device *netdev = adapter->netdev; | |
86d70e53 JK |
2741 | struct e1000_hw *hw = &adapter->hw; |
2742 | u32 rctl; | |
bc7f75fa | 2743 | |
86d70e53 JK |
2744 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2745 | /* disable VLAN receive filtering */ | |
2746 | rctl = er32(RCTL); | |
2747 | rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN); | |
2748 | ew32(RCTL, rctl); | |
2749 | ||
2750 | if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { | |
80d5c368 PM |
2751 | e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), |
2752 | adapter->mng_vlan_id); | |
86d70e53 | 2753 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
bc7f75fa | 2754 | } |
bc7f75fa AK |
2755 | } |
2756 | } | |
2757 | ||
86d70e53 JK |
2758 | /** |
2759 | * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering | |
2760 | * @adapter: board private structure to initialize | |
2761 | **/ | |
2762 | static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter) | |
2763 | { | |
2764 | struct e1000_hw *hw = &adapter->hw; | |
2765 | u32 rctl; | |
2766 | ||
2767 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
2768 | /* enable VLAN receive filtering */ | |
2769 | rctl = er32(RCTL); | |
2770 | rctl |= E1000_RCTL_VFE; | |
2771 | rctl &= ~E1000_RCTL_CFIEN; | |
2772 | ew32(RCTL, rctl); | |
2773 | } | |
2774 | } | |
bc7f75fa | 2775 | |
86d70e53 JK |
2776 | /** |
2777 | * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping | |
2778 | * @adapter: board private structure to initialize | |
2779 | **/ | |
2780 | static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter) | |
bc7f75fa | 2781 | { |
bc7f75fa | 2782 | struct e1000_hw *hw = &adapter->hw; |
86d70e53 | 2783 | u32 ctrl; |
bc7f75fa | 2784 | |
86d70e53 JK |
2785 | /* disable VLAN tag insert/strip */ |
2786 | ctrl = er32(CTRL); | |
2787 | ctrl &= ~E1000_CTRL_VME; | |
2788 | ew32(CTRL, ctrl); | |
2789 | } | |
bc7f75fa | 2790 | |
86d70e53 JK |
2791 | /** |
2792 | * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping | |
2793 | * @adapter: board private structure to initialize | |
2794 | **/ | |
2795 | static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter) | |
2796 | { | |
2797 | struct e1000_hw *hw = &adapter->hw; | |
2798 | u32 ctrl; | |
bc7f75fa | 2799 | |
86d70e53 JK |
2800 | /* enable VLAN tag insert/strip */ |
2801 | ctrl = er32(CTRL); | |
2802 | ctrl |= E1000_CTRL_VME; | |
2803 | ew32(CTRL, ctrl); | |
2804 | } | |
bc7f75fa | 2805 | |
86d70e53 JK |
2806 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
2807 | { | |
2808 | struct net_device *netdev = adapter->netdev; | |
2809 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
2810 | u16 old_vid = adapter->mng_vlan_id; | |
2811 | ||
e5fe2541 | 2812 | if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { |
80d5c368 | 2813 | e1000_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid); |
86d70e53 | 2814 | adapter->mng_vlan_id = vid; |
bc7f75fa AK |
2815 | } |
2816 | ||
86d70e53 | 2817 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && (vid != old_vid)) |
80d5c368 | 2818 | e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), old_vid); |
bc7f75fa AK |
2819 | } |
2820 | ||
2821 | static void e1000_restore_vlan(struct e1000_adapter *adapter) | |
2822 | { | |
2823 | u16 vid; | |
2824 | ||
80d5c368 | 2825 | e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); |
bc7f75fa | 2826 | |
86d70e53 | 2827 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
80d5c368 | 2828 | e1000_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
bc7f75fa AK |
2829 | } |
2830 | ||
cd791618 | 2831 | static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
bc7f75fa AK |
2832 | { |
2833 | struct e1000_hw *hw = &adapter->hw; | |
cd791618 | 2834 | u32 manc, manc2h, mdef, i, j; |
bc7f75fa AK |
2835 | |
2836 | if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) | |
2837 | return; | |
2838 | ||
2839 | manc = er32(MANC); | |
2840 | ||
e921eb1a | 2841 | /* enable receiving management packets to the host. this will probably |
bc7f75fa | 2842 | * generate destination unreachable messages from the host OS, but |
ad68076e BA |
2843 | * the packets will be handled on SMBUS |
2844 | */ | |
bc7f75fa AK |
2845 | manc |= E1000_MANC_EN_MNG2HOST; |
2846 | manc2h = er32(MANC2H); | |
cd791618 BA |
2847 | |
2848 | switch (hw->mac.type) { | |
2849 | default: | |
2850 | manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); | |
2851 | break; | |
2852 | case e1000_82574: | |
2853 | case e1000_82583: | |
e921eb1a | 2854 | /* Check if IPMI pass-through decision filter already exists; |
cd791618 BA |
2855 | * if so, enable it. |
2856 | */ | |
2857 | for (i = 0, j = 0; i < 8; i++) { | |
2858 | mdef = er32(MDEF(i)); | |
2859 | ||
2860 | /* Ignore filters with anything other than IPMI ports */ | |
3b21b508 | 2861 | if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
cd791618 BA |
2862 | continue; |
2863 | ||
2864 | /* Enable this decision filter in MANC2H */ | |
2865 | if (mdef) | |
2866 | manc2h |= (1 << i); | |
2867 | ||
2868 | j |= mdef; | |
2869 | } | |
2870 | ||
2871 | if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) | |
2872 | break; | |
2873 | ||
2874 | /* Create new decision filter in an empty filter */ | |
2875 | for (i = 0, j = 0; i < 8; i++) | |
2876 | if (er32(MDEF(i)) == 0) { | |
2877 | ew32(MDEF(i), (E1000_MDEF_PORT_623 | | |
2878 | E1000_MDEF_PORT_664)); | |
2879 | manc2h |= (1 << 1); | |
2880 | j++; | |
2881 | break; | |
2882 | } | |
2883 | ||
2884 | if (!j) | |
2885 | e_warn("Unable to create IPMI pass-through filter\n"); | |
2886 | break; | |
2887 | } | |
2888 | ||
bc7f75fa AK |
2889 | ew32(MANC2H, manc2h); |
2890 | ew32(MANC, manc); | |
2891 | } | |
2892 | ||
2893 | /** | |
af667a29 | 2894 | * e1000_configure_tx - Configure Transmit Unit after Reset |
bc7f75fa AK |
2895 | * @adapter: board private structure |
2896 | * | |
2897 | * Configure the Tx unit of the MAC after a reset. | |
2898 | **/ | |
2899 | static void e1000_configure_tx(struct e1000_adapter *adapter) | |
2900 | { | |
2901 | struct e1000_hw *hw = &adapter->hw; | |
2902 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2903 | u64 tdba; | |
e7e834aa | 2904 | u32 tdlen, tctl, tarc; |
bc7f75fa AK |
2905 | |
2906 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
2907 | tdba = tx_ring->dma; | |
2908 | tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); | |
1e36052e BA |
2909 | ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
2910 | ew32(TDBAH(0), (tdba >> 32)); | |
2911 | ew32(TDLEN(0), tdlen); | |
2912 | ew32(TDH(0), 0); | |
2913 | ew32(TDT(0), 0); | |
2914 | tx_ring->head = adapter->hw.hw_addr + E1000_TDH(0); | |
2915 | tx_ring->tail = adapter->hw.hw_addr + E1000_TDT(0); | |
bc7f75fa | 2916 | |
bc7f75fa AK |
2917 | /* Set the Tx Interrupt Delay register */ |
2918 | ew32(TIDV, adapter->tx_int_delay); | |
ad68076e | 2919 | /* Tx irq moderation */ |
bc7f75fa AK |
2920 | ew32(TADV, adapter->tx_abs_int_delay); |
2921 | ||
3a3b7586 JB |
2922 | if (adapter->flags2 & FLAG2_DMA_BURST) { |
2923 | u32 txdctl = er32(TXDCTL(0)); | |
2924 | txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH | | |
2925 | E1000_TXDCTL_WTHRESH); | |
e921eb1a | 2926 | /* set up some performance related parameters to encourage the |
3a3b7586 JB |
2927 | * hardware to use the bus more efficiently in bursts, depends |
2928 | * on the tx_int_delay to be enabled, | |
8edc0e62 | 2929 | * wthresh = 1 ==> burst write is disabled to avoid Tx stalls |
3a3b7586 JB |
2930 | * hthresh = 1 ==> prefetch when one or more available |
2931 | * pthresh = 0x1f ==> prefetch if internal cache 31 or less | |
2932 | * BEWARE: this seems to work but should be considered first if | |
af667a29 | 2933 | * there are Tx hangs or other Tx related bugs |
3a3b7586 JB |
2934 | */ |
2935 | txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE; | |
2936 | ew32(TXDCTL(0), txdctl); | |
3a3b7586 | 2937 | } |
56032be7 BA |
2938 | /* erratum work around: set txdctl the same for both queues */ |
2939 | ew32(TXDCTL(1), er32(TXDCTL(0))); | |
3a3b7586 | 2940 | |
e7e834aa DE |
2941 | /* Program the Transmit Control Register */ |
2942 | tctl = er32(TCTL); | |
2943 | tctl &= ~E1000_TCTL_CT; | |
2944 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
2945 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
2946 | ||
bc7f75fa | 2947 | if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { |
e9ec2c0f | 2948 | tarc = er32(TARC(0)); |
e921eb1a | 2949 | /* set the speed mode bit, we'll clear it if we're not at |
ad68076e BA |
2950 | * gigabit link later |
2951 | */ | |
bc7f75fa AK |
2952 | #define SPEED_MODE_BIT (1 << 21) |
2953 | tarc |= SPEED_MODE_BIT; | |
e9ec2c0f | 2954 | ew32(TARC(0), tarc); |
bc7f75fa AK |
2955 | } |
2956 | ||
2957 | /* errata: program both queues to unweighted RR */ | |
2958 | if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { | |
e9ec2c0f | 2959 | tarc = er32(TARC(0)); |
bc7f75fa | 2960 | tarc |= 1; |
e9ec2c0f JK |
2961 | ew32(TARC(0), tarc); |
2962 | tarc = er32(TARC(1)); | |
bc7f75fa | 2963 | tarc |= 1; |
e9ec2c0f | 2964 | ew32(TARC(1), tarc); |
bc7f75fa AK |
2965 | } |
2966 | ||
bc7f75fa AK |
2967 | /* Setup Transmit Descriptor Settings for eop descriptor */ |
2968 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; | |
2969 | ||
2970 | /* only set IDE if we are delaying interrupts using the timers */ | |
2971 | if (adapter->tx_int_delay) | |
2972 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
2973 | ||
2974 | /* enable Report Status bit */ | |
2975 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
2976 | ||
e7e834aa DE |
2977 | ew32(TCTL, tctl); |
2978 | ||
57cde763 | 2979 | hw->mac.ops.config_collision_dist(hw); |
bc7f75fa AK |
2980 | } |
2981 | ||
2982 | /** | |
2983 | * e1000_setup_rctl - configure the receive control registers | |
2984 | * @adapter: Board private structure | |
2985 | **/ | |
2986 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
2987 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
2988 | static void e1000_setup_rctl(struct e1000_adapter *adapter) | |
2989 | { | |
2990 | struct e1000_hw *hw = &adapter->hw; | |
2991 | u32 rctl, rfctl; | |
bc7f75fa AK |
2992 | u32 pages = 0; |
2993 | ||
2fbe4526 | 2994 | /* Workaround Si errata on PCHx - configure jumbo frame flow */ |
da1e2046 BA |
2995 | if ((hw->mac.type >= e1000_pch2lan) && |
2996 | (adapter->netdev->mtu > ETH_DATA_LEN) && | |
2997 | e1000_lv_jumbo_workaround_ich8lan(hw, true)) | |
2998 | e_dbg("failed to enable jumbo frame workaround mode\n"); | |
a1ce6473 | 2999 | |
bc7f75fa AK |
3000 | /* Program MC offset vector base */ |
3001 | rctl = er32(RCTL); | |
3002 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
3003 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
f0ff4398 BA |
3004 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | |
3005 | (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
bc7f75fa AK |
3006 | |
3007 | /* Do not Store bad packets */ | |
3008 | rctl &= ~E1000_RCTL_SBP; | |
3009 | ||
3010 | /* Enable Long Packet receive */ | |
3011 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
3012 | rctl &= ~E1000_RCTL_LPE; | |
3013 | else | |
3014 | rctl |= E1000_RCTL_LPE; | |
3015 | ||
eb7c3adb JK |
3016 | /* Some systems expect that the CRC is included in SMBUS traffic. The |
3017 | * hardware strips the CRC before sending to both SMBUS (BMC) and to | |
3018 | * host memory when this is enabled | |
3019 | */ | |
3020 | if (adapter->flags2 & FLAG2_CRC_STRIPPING) | |
3021 | rctl |= E1000_RCTL_SECRC; | |
5918bd88 | 3022 | |
a4f58f54 BA |
3023 | /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
3024 | if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { | |
3025 | u16 phy_data; | |
3026 | ||
3027 | e1e_rphy(hw, PHY_REG(770, 26), &phy_data); | |
3028 | phy_data &= 0xfff8; | |
3029 | phy_data |= (1 << 2); | |
3030 | e1e_wphy(hw, PHY_REG(770, 26), phy_data); | |
3031 | ||
3032 | e1e_rphy(hw, 22, &phy_data); | |
3033 | phy_data &= 0x0fff; | |
3034 | phy_data |= (1 << 14); | |
3035 | e1e_wphy(hw, 0x10, 0x2823); | |
3036 | e1e_wphy(hw, 0x11, 0x0003); | |
3037 | e1e_wphy(hw, 22, phy_data); | |
3038 | } | |
3039 | ||
bc7f75fa AK |
3040 | /* Setup buffer sizes */ |
3041 | rctl &= ~E1000_RCTL_SZ_4096; | |
3042 | rctl |= E1000_RCTL_BSEX; | |
3043 | switch (adapter->rx_buffer_len) { | |
bc7f75fa AK |
3044 | case 2048: |
3045 | default: | |
3046 | rctl |= E1000_RCTL_SZ_2048; | |
3047 | rctl &= ~E1000_RCTL_BSEX; | |
3048 | break; | |
3049 | case 4096: | |
3050 | rctl |= E1000_RCTL_SZ_4096; | |
3051 | break; | |
3052 | case 8192: | |
3053 | rctl |= E1000_RCTL_SZ_8192; | |
3054 | break; | |
3055 | case 16384: | |
3056 | rctl |= E1000_RCTL_SZ_16384; | |
3057 | break; | |
3058 | } | |
3059 | ||
5f450212 BA |
3060 | /* Enable Extended Status in all Receive Descriptors */ |
3061 | rfctl = er32(RFCTL); | |
3062 | rfctl |= E1000_RFCTL_EXTEN; | |
f6bd5577 | 3063 | ew32(RFCTL, rfctl); |
5f450212 | 3064 | |
e921eb1a | 3065 | /* 82571 and greater support packet-split where the protocol |
bc7f75fa AK |
3066 | * header is placed in skb->data and the packet data is |
3067 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
3068 | * In the case of a non-split, skb->data is linearly filled, | |
3069 | * followed by the page buffers. Therefore, skb->data is | |
3070 | * sized to hold the largest protocol header. | |
3071 | * | |
3072 | * allocations using alloc_page take too long for regular MTU | |
3073 | * so only enable packet split for jumbo frames | |
3074 | * | |
3075 | * Using pages when the page size is greater than 16k wastes | |
3076 | * a lot of memory, since we allocate 3 pages at all times | |
3077 | * per packet. | |
3078 | */ | |
bc7f75fa | 3079 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
79d4e908 | 3080 | if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
bc7f75fa | 3081 | adapter->rx_ps_pages = pages; |
97ac8cae BA |
3082 | else |
3083 | adapter->rx_ps_pages = 0; | |
bc7f75fa AK |
3084 | |
3085 | if (adapter->rx_ps_pages) { | |
90da0669 BA |
3086 | u32 psrctl = 0; |
3087 | ||
140a7480 AK |
3088 | /* Enable Packet split descriptors */ |
3089 | rctl |= E1000_RCTL_DTYP_PS; | |
bc7f75fa | 3090 | |
e5fe2541 | 3091 | psrctl |= adapter->rx_ps_bsize0 >> E1000_PSRCTL_BSIZE0_SHIFT; |
bc7f75fa AK |
3092 | |
3093 | switch (adapter->rx_ps_pages) { | |
3094 | case 3: | |
e5fe2541 BA |
3095 | psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE3_SHIFT; |
3096 | /* fall-through */ | |
bc7f75fa | 3097 | case 2: |
e5fe2541 BA |
3098 | psrctl |= PAGE_SIZE << E1000_PSRCTL_BSIZE2_SHIFT; |
3099 | /* fall-through */ | |
bc7f75fa | 3100 | case 1: |
e5fe2541 | 3101 | psrctl |= PAGE_SIZE >> E1000_PSRCTL_BSIZE1_SHIFT; |
bc7f75fa AK |
3102 | break; |
3103 | } | |
3104 | ||
3105 | ew32(PSRCTL, psrctl); | |
3106 | } | |
3107 | ||
cf955e6c BG |
3108 | /* This is useful for sniffing bad packets. */ |
3109 | if (adapter->netdev->features & NETIF_F_RXALL) { | |
3110 | /* UPE and MPE will be handled by normal PROMISC logic | |
e921eb1a BA |
3111 | * in e1000e_set_rx_mode |
3112 | */ | |
e80bd1d1 BA |
3113 | rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
3114 | E1000_RCTL_BAM | /* RX All Bcast Pkts */ | |
3115 | E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ | |
cf955e6c | 3116 | |
e80bd1d1 BA |
3117 | rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ |
3118 | E1000_RCTL_DPF | /* Allow filtered pause */ | |
3119 | E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ | |
cf955e6c BG |
3120 | /* Do not mess with E1000_CTRL_VME, it affects transmit as well, |
3121 | * and that breaks VLANs. | |
3122 | */ | |
3123 | } | |
3124 | ||
bc7f75fa | 3125 | ew32(RCTL, rctl); |
318a94d6 | 3126 | /* just started the receive unit, no need to restart */ |
12d43f7d | 3127 | adapter->flags &= ~FLAG_RESTART_NOW; |
bc7f75fa AK |
3128 | } |
3129 | ||
3130 | /** | |
3131 | * e1000_configure_rx - Configure Receive Unit after Reset | |
3132 | * @adapter: board private structure | |
3133 | * | |
3134 | * Configure the Rx unit of the MAC after a reset. | |
3135 | **/ | |
3136 | static void e1000_configure_rx(struct e1000_adapter *adapter) | |
3137 | { | |
3138 | struct e1000_hw *hw = &adapter->hw; | |
3139 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
3140 | u64 rdba; | |
3141 | u32 rdlen, rctl, rxcsum, ctrl_ext; | |
3142 | ||
3143 | if (adapter->rx_ps_pages) { | |
3144 | /* this is a 32 byte descriptor */ | |
3145 | rdlen = rx_ring->count * | |
af667a29 | 3146 | sizeof(union e1000_rx_desc_packet_split); |
bc7f75fa AK |
3147 | adapter->clean_rx = e1000_clean_rx_irq_ps; |
3148 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
97ac8cae | 3149 | } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
5f450212 | 3150 | rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
97ac8cae BA |
3151 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; |
3152 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
bc7f75fa | 3153 | } else { |
5f450212 | 3154 | rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended); |
bc7f75fa AK |
3155 | adapter->clean_rx = e1000_clean_rx_irq; |
3156 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
3157 | } | |
3158 | ||
3159 | /* disable receives while setting up the descriptors */ | |
3160 | rctl = er32(RCTL); | |
7f99ae63 BA |
3161 | if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
3162 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
bc7f75fa | 3163 | e1e_flush(); |
1bba4386 | 3164 | usleep_range(10000, 20000); |
bc7f75fa | 3165 | |
3a3b7586 | 3166 | if (adapter->flags2 & FLAG2_DMA_BURST) { |
e921eb1a | 3167 | /* set the writeback threshold (only takes effect if the RDTR |
3a3b7586 | 3168 | * is set). set GRAN=1 and write back up to 0x4 worth, and |
af667a29 | 3169 | * enable prefetching of 0x20 Rx descriptors |
3a3b7586 JB |
3170 | * granularity = 01 |
3171 | * wthresh = 04, | |
3172 | * hthresh = 04, | |
3173 | * pthresh = 0x20 | |
3174 | */ | |
3175 | ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE); | |
3176 | ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE); | |
3177 | ||
e921eb1a | 3178 | /* override the delay timers for enabling bursting, only if |
3a3b7586 JB |
3179 | * the value was not set by the user via module options |
3180 | */ | |
3181 | if (adapter->rx_int_delay == DEFAULT_RDTR) | |
3182 | adapter->rx_int_delay = BURST_RDTR; | |
3183 | if (adapter->rx_abs_int_delay == DEFAULT_RADV) | |
3184 | adapter->rx_abs_int_delay = BURST_RADV; | |
3185 | } | |
3186 | ||
bc7f75fa AK |
3187 | /* set the Receive Delay Timer Register */ |
3188 | ew32(RDTR, adapter->rx_int_delay); | |
3189 | ||
3190 | /* irq moderation */ | |
3191 | ew32(RADV, adapter->rx_abs_int_delay); | |
828bac87 | 3192 | if ((adapter->itr_setting != 0) && (adapter->itr != 0)) |
22a4cca2 | 3193 | e1000e_write_itr(adapter, adapter->itr); |
bc7f75fa AK |
3194 | |
3195 | ctrl_ext = er32(CTRL_EXT); | |
bc7f75fa AK |
3196 | /* Auto-Mask interrupts upon ICR access */ |
3197 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
3198 | ew32(IAM, 0xffffffff); | |
3199 | ew32(CTRL_EXT, ctrl_ext); | |
3200 | e1e_flush(); | |
3201 | ||
e921eb1a | 3202 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
ad68076e BA |
3203 | * the Base and Length of the Rx Descriptor Ring |
3204 | */ | |
bc7f75fa | 3205 | rdba = rx_ring->dma; |
1e36052e BA |
3206 | ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
3207 | ew32(RDBAH(0), (rdba >> 32)); | |
3208 | ew32(RDLEN(0), rdlen); | |
3209 | ew32(RDH(0), 0); | |
3210 | ew32(RDT(0), 0); | |
3211 | rx_ring->head = adapter->hw.hw_addr + E1000_RDH(0); | |
3212 | rx_ring->tail = adapter->hw.hw_addr + E1000_RDT(0); | |
bc7f75fa AK |
3213 | |
3214 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
3215 | rxcsum = er32(RXCSUM); | |
2e1706f2 | 3216 | if (adapter->netdev->features & NETIF_F_RXCSUM) |
bc7f75fa | 3217 | rxcsum |= E1000_RXCSUM_TUOFL; |
2e1706f2 | 3218 | else |
bc7f75fa | 3219 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
bc7f75fa AK |
3220 | ew32(RXCSUM, rxcsum); |
3221 | ||
3e35d991 BA |
3222 | /* With jumbo frames, excessive C-state transition latencies result |
3223 | * in dropped transactions. | |
3224 | */ | |
3225 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
3226 | u32 lat = | |
3227 | ((er32(PBA) & E1000_PBA_RXA_MASK) * 1024 - | |
3228 | adapter->max_frame_size) * 8 / 1000; | |
3229 | ||
3230 | if (adapter->flags & FLAG_IS_ICH) { | |
53ec5498 BA |
3231 | u32 rxdctl = er32(RXDCTL(0)); |
3232 | ew32(RXDCTL(0), rxdctl | 0x3); | |
53ec5498 | 3233 | } |
3e35d991 BA |
3234 | |
3235 | pm_qos_update_request(&adapter->netdev->pm_qos_req, lat); | |
3236 | } else { | |
3237 | pm_qos_update_request(&adapter->netdev->pm_qos_req, | |
3238 | PM_QOS_DEFAULT_VALUE); | |
97ac8cae | 3239 | } |
bc7f75fa AK |
3240 | |
3241 | /* Enable Receives */ | |
3242 | ew32(RCTL, rctl); | |
3243 | } | |
3244 | ||
3245 | /** | |
ef9b965a JB |
3246 | * e1000e_write_mc_addr_list - write multicast addresses to MTA |
3247 | * @netdev: network interface device structure | |
bc7f75fa | 3248 | * |
ef9b965a JB |
3249 | * Writes multicast address list to the MTA hash table. |
3250 | * Returns: -ENOMEM on failure | |
3251 | * 0 on no addresses written | |
3252 | * X on writing X addresses to MTA | |
3253 | */ | |
3254 | static int e1000e_write_mc_addr_list(struct net_device *netdev) | |
3255 | { | |
3256 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3257 | struct e1000_hw *hw = &adapter->hw; | |
3258 | struct netdev_hw_addr *ha; | |
3259 | u8 *mta_list; | |
3260 | int i; | |
3261 | ||
3262 | if (netdev_mc_empty(netdev)) { | |
3263 | /* nothing to program, so clear mc list */ | |
3264 | hw->mac.ops.update_mc_addr_list(hw, NULL, 0); | |
3265 | return 0; | |
3266 | } | |
3267 | ||
3268 | mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC); | |
3269 | if (!mta_list) | |
3270 | return -ENOMEM; | |
3271 | ||
3272 | /* update_mc_addr_list expects a packed array of only addresses. */ | |
3273 | i = 0; | |
3274 | netdev_for_each_mc_addr(ha, netdev) | |
f0ff4398 | 3275 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); |
ef9b965a JB |
3276 | |
3277 | hw->mac.ops.update_mc_addr_list(hw, mta_list, i); | |
3278 | kfree(mta_list); | |
3279 | ||
3280 | return netdev_mc_count(netdev); | |
3281 | } | |
3282 | ||
3283 | /** | |
3284 | * e1000e_write_uc_addr_list - write unicast addresses to RAR table | |
3285 | * @netdev: network interface device structure | |
bc7f75fa | 3286 | * |
ef9b965a JB |
3287 | * Writes unicast address list to the RAR table. |
3288 | * Returns: -ENOMEM on failure/insufficient address space | |
3289 | * 0 on no addresses written | |
3290 | * X on writing X addresses to the RAR table | |
bc7f75fa | 3291 | **/ |
ef9b965a | 3292 | static int e1000e_write_uc_addr_list(struct net_device *netdev) |
bc7f75fa | 3293 | { |
ef9b965a JB |
3294 | struct e1000_adapter *adapter = netdev_priv(netdev); |
3295 | struct e1000_hw *hw = &adapter->hw; | |
3296 | unsigned int rar_entries = hw->mac.rar_entry_count; | |
3297 | int count = 0; | |
3298 | ||
3299 | /* save a rar entry for our hardware address */ | |
3300 | rar_entries--; | |
3301 | ||
3302 | /* save a rar entry for the LAA workaround */ | |
3303 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) | |
3304 | rar_entries--; | |
3305 | ||
3306 | /* return ENOMEM indicating insufficient memory for addresses */ | |
3307 | if (netdev_uc_count(netdev) > rar_entries) | |
3308 | return -ENOMEM; | |
3309 | ||
3310 | if (!netdev_uc_empty(netdev) && rar_entries) { | |
3311 | struct netdev_hw_addr *ha; | |
3312 | ||
e921eb1a | 3313 | /* write the addresses in reverse order to avoid write |
ef9b965a JB |
3314 | * combining |
3315 | */ | |
3316 | netdev_for_each_uc_addr(ha, netdev) { | |
3317 | if (!rar_entries) | |
3318 | break; | |
69e1e019 | 3319 | hw->mac.ops.rar_set(hw, ha->addr, rar_entries--); |
ef9b965a JB |
3320 | count++; |
3321 | } | |
3322 | } | |
3323 | ||
3324 | /* zero out the remaining RAR entries not used above */ | |
3325 | for (; rar_entries > 0; rar_entries--) { | |
3326 | ew32(RAH(rar_entries), 0); | |
3327 | ew32(RAL(rar_entries), 0); | |
3328 | } | |
3329 | e1e_flush(); | |
3330 | ||
3331 | return count; | |
bc7f75fa AK |
3332 | } |
3333 | ||
3334 | /** | |
ef9b965a | 3335 | * e1000e_set_rx_mode - secondary unicast, Multicast and Promiscuous mode set |
bc7f75fa AK |
3336 | * @netdev: network interface device structure |
3337 | * | |
ef9b965a JB |
3338 | * The ndo_set_rx_mode entry point is called whenever the unicast or multicast |
3339 | * address list or the network interface flags are updated. This routine is | |
3340 | * responsible for configuring the hardware for proper unicast, multicast, | |
bc7f75fa AK |
3341 | * promiscuous mode, and all-multi behavior. |
3342 | **/ | |
ef9b965a | 3343 | static void e1000e_set_rx_mode(struct net_device *netdev) |
bc7f75fa AK |
3344 | { |
3345 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3346 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa | 3347 | u32 rctl; |
bc7f75fa | 3348 | |
63eb48f1 DE |
3349 | if (pm_runtime_suspended(netdev->dev.parent)) |
3350 | return; | |
3351 | ||
bc7f75fa | 3352 | /* Check for Promiscuous and All Multicast modes */ |
bc7f75fa AK |
3353 | rctl = er32(RCTL); |
3354 | ||
ef9b965a JB |
3355 | /* clear the affected bits */ |
3356 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
3357 | ||
bc7f75fa AK |
3358 | if (netdev->flags & IFF_PROMISC) { |
3359 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
86d70e53 JK |
3360 | /* Do not hardware filter VLANs in promisc mode */ |
3361 | e1000e_vlan_filter_disable(adapter); | |
bc7f75fa | 3362 | } else { |
ef9b965a | 3363 | int count; |
3d3a1676 | 3364 | |
746b9f02 PM |
3365 | if (netdev->flags & IFF_ALLMULTI) { |
3366 | rctl |= E1000_RCTL_MPE; | |
746b9f02 | 3367 | } else { |
e921eb1a | 3368 | /* Write addresses to the MTA, if the attempt fails |
ef9b965a JB |
3369 | * then we should just turn on promiscuous mode so |
3370 | * that we can at least receive multicast traffic | |
3371 | */ | |
3372 | count = e1000e_write_mc_addr_list(netdev); | |
3373 | if (count < 0) | |
3374 | rctl |= E1000_RCTL_MPE; | |
746b9f02 | 3375 | } |
86d70e53 | 3376 | e1000e_vlan_filter_enable(adapter); |
e921eb1a | 3377 | /* Write addresses to available RAR registers, if there is not |
ef9b965a JB |
3378 | * sufficient space to store all the addresses then enable |
3379 | * unicast promiscuous mode | |
bc7f75fa | 3380 | */ |
ef9b965a JB |
3381 | count = e1000e_write_uc_addr_list(netdev); |
3382 | if (count < 0) | |
3383 | rctl |= E1000_RCTL_UPE; | |
bc7f75fa | 3384 | } |
86d70e53 | 3385 | |
ef9b965a JB |
3386 | ew32(RCTL, rctl); |
3387 | ||
f646968f | 3388 | if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) |
86d70e53 JK |
3389 | e1000e_vlan_strip_enable(adapter); |
3390 | else | |
3391 | e1000e_vlan_strip_disable(adapter); | |
bc7f75fa AK |
3392 | } |
3393 | ||
70495a50 BA |
3394 | static void e1000e_setup_rss_hash(struct e1000_adapter *adapter) |
3395 | { | |
3396 | struct e1000_hw *hw = &adapter->hw; | |
3397 | u32 mrqc, rxcsum; | |
3398 | int i; | |
3399 | static const u32 rsskey[10] = { | |
3400 | 0xda565a6d, 0xc20e5b25, 0x3d256741, 0xb08fa343, 0xcb2bcad0, | |
3401 | 0xb4307bae, 0xa32dcb77, 0x0cf23080, 0x3bb7426a, 0xfa01acbe | |
3402 | }; | |
3403 | ||
3404 | /* Fill out hash function seed */ | |
3405 | for (i = 0; i < 10; i++) | |
3406 | ew32(RSSRK(i), rsskey[i]); | |
3407 | ||
3408 | /* Direct all traffic to queue 0 */ | |
3409 | for (i = 0; i < 32; i++) | |
3410 | ew32(RETA(i), 0); | |
3411 | ||
e921eb1a | 3412 | /* Disable raw packet checksumming so that RSS hash is placed in |
70495a50 BA |
3413 | * descriptor on writeback. |
3414 | */ | |
3415 | rxcsum = er32(RXCSUM); | |
3416 | rxcsum |= E1000_RXCSUM_PCSD; | |
3417 | ||
3418 | ew32(RXCSUM, rxcsum); | |
3419 | ||
3420 | mrqc = (E1000_MRQC_RSS_FIELD_IPV4 | | |
3421 | E1000_MRQC_RSS_FIELD_IPV4_TCP | | |
3422 | E1000_MRQC_RSS_FIELD_IPV6 | | |
3423 | E1000_MRQC_RSS_FIELD_IPV6_TCP | | |
3424 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX); | |
3425 | ||
3426 | ew32(MRQC, mrqc); | |
3427 | } | |
3428 | ||
b67e1913 BA |
3429 | /** |
3430 | * e1000e_get_base_timinca - get default SYSTIM time increment attributes | |
3431 | * @adapter: board private structure | |
3432 | * @timinca: pointer to returned time increment attributes | |
3433 | * | |
3434 | * Get attributes for incrementing the System Time Register SYSTIML/H at | |
3435 | * the default base frequency, and set the cyclecounter shift value. | |
3436 | **/ | |
d89777bf | 3437 | s32 e1000e_get_base_timinca(struct e1000_adapter *adapter, u32 *timinca) |
b67e1913 BA |
3438 | { |
3439 | struct e1000_hw *hw = &adapter->hw; | |
3440 | u32 incvalue, incperiod, shift; | |
3441 | ||
3442 | /* Make sure clock is enabled on I217 before checking the frequency */ | |
3443 | if ((hw->mac.type == e1000_pch_lpt) && | |
3444 | !(er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) && | |
3445 | !(er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_ENABLED)) { | |
3446 | u32 fextnvm7 = er32(FEXTNVM7); | |
3447 | ||
3448 | if (!(fextnvm7 & (1 << 0))) { | |
3449 | ew32(FEXTNVM7, fextnvm7 | (1 << 0)); | |
3450 | e1e_flush(); | |
3451 | } | |
3452 | } | |
3453 | ||
3454 | switch (hw->mac.type) { | |
3455 | case e1000_pch2lan: | |
3456 | case e1000_pch_lpt: | |
3457 | /* On I217, the clock frequency is 25MHz or 96MHz as | |
3458 | * indicated by the System Clock Frequency Indication | |
3459 | */ | |
3460 | if ((hw->mac.type != e1000_pch_lpt) || | |
3461 | (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_SYSCFI)) { | |
3462 | /* Stable 96MHz frequency */ | |
3463 | incperiod = INCPERIOD_96MHz; | |
3464 | incvalue = INCVALUE_96MHz; | |
3465 | shift = INCVALUE_SHIFT_96MHz; | |
3466 | adapter->cc.shift = shift + INCPERIOD_SHIFT_96MHz; | |
3467 | break; | |
3468 | } | |
3469 | /* fall-through */ | |
3470 | case e1000_82574: | |
3471 | case e1000_82583: | |
3472 | /* Stable 25MHz frequency */ | |
3473 | incperiod = INCPERIOD_25MHz; | |
3474 | incvalue = INCVALUE_25MHz; | |
3475 | shift = INCVALUE_SHIFT_25MHz; | |
3476 | adapter->cc.shift = shift; | |
3477 | break; | |
3478 | default: | |
3479 | return -EINVAL; | |
3480 | } | |
3481 | ||
3482 | *timinca = ((incperiod << E1000_TIMINCA_INCPERIOD_SHIFT) | | |
3483 | ((incvalue << shift) & E1000_TIMINCA_INCVALUE_MASK)); | |
3484 | ||
3485 | return 0; | |
3486 | } | |
3487 | ||
3488 | /** | |
3489 | * e1000e_config_hwtstamp - configure the hwtstamp registers and enable/disable | |
3490 | * @adapter: board private structure | |
3491 | * | |
3492 | * Outgoing time stamping can be enabled and disabled. Play nice and | |
3493 | * disable it when requested, although it shouldn't cause any overhead | |
3494 | * when no packet needs it. At most one packet in the queue may be | |
3495 | * marked for time stamping, otherwise it would be impossible to tell | |
3496 | * for sure to which packet the hardware time stamp belongs. | |
3497 | * | |
3498 | * Incoming time stamping has to be configured via the hardware filters. | |
3499 | * Not all combinations are supported, in particular event type has to be | |
3500 | * specified. Matching the kind of event packet is not supported, with the | |
3501 | * exception of "all V2 events regardless of level 2 or 4". | |
3502 | **/ | |
62d7e3a2 BH |
3503 | static int e1000e_config_hwtstamp(struct e1000_adapter *adapter, |
3504 | struct hwtstamp_config *config) | |
b67e1913 BA |
3505 | { |
3506 | struct e1000_hw *hw = &adapter->hw; | |
b67e1913 BA |
3507 | u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED; |
3508 | u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; | |
d89777bf BA |
3509 | u32 rxmtrl = 0; |
3510 | u16 rxudp = 0; | |
3511 | bool is_l4 = false; | |
3512 | bool is_l2 = false; | |
b67e1913 BA |
3513 | u32 regval; |
3514 | s32 ret_val; | |
3515 | ||
3516 | if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP)) | |
3517 | return -EINVAL; | |
3518 | ||
3519 | /* flags reserved for future extensions - must be zero */ | |
3520 | if (config->flags) | |
3521 | return -EINVAL; | |
3522 | ||
3523 | switch (config->tx_type) { | |
3524 | case HWTSTAMP_TX_OFF: | |
3525 | tsync_tx_ctl = 0; | |
3526 | break; | |
3527 | case HWTSTAMP_TX_ON: | |
3528 | break; | |
3529 | default: | |
3530 | return -ERANGE; | |
3531 | } | |
3532 | ||
3533 | switch (config->rx_filter) { | |
3534 | case HWTSTAMP_FILTER_NONE: | |
3535 | tsync_rx_ctl = 0; | |
3536 | break; | |
d89777bf BA |
3537 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
3538 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; | |
3539 | rxmtrl = E1000_RXMTRL_PTP_V1_SYNC_MESSAGE; | |
3540 | is_l4 = true; | |
3541 | break; | |
3542 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: | |
3543 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; | |
3544 | rxmtrl = E1000_RXMTRL_PTP_V1_DELAY_REQ_MESSAGE; | |
3545 | is_l4 = true; | |
3546 | break; | |
3547 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
3548 | /* Also time stamps V2 L2 Path Delay Request/Response */ | |
3549 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2; | |
3550 | rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE; | |
3551 | is_l2 = true; | |
3552 | break; | |
3553 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
3554 | /* Also time stamps V2 L2 Path Delay Request/Response. */ | |
3555 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_V2; | |
3556 | rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE; | |
3557 | is_l2 = true; | |
3558 | break; | |
3559 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
3560 | /* Hardware cannot filter just V2 L4 Sync messages; | |
3561 | * fall-through to V2 (both L2 and L4) Sync. | |
3562 | */ | |
3563 | case HWTSTAMP_FILTER_PTP_V2_SYNC: | |
3564 | /* Also time stamps V2 Path Delay Request/Response. */ | |
3565 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; | |
3566 | rxmtrl = E1000_RXMTRL_PTP_V2_SYNC_MESSAGE; | |
3567 | is_l2 = true; | |
3568 | is_l4 = true; | |
3569 | break; | |
3570 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: | |
3571 | /* Hardware cannot filter just V2 L4 Delay Request messages; | |
3572 | * fall-through to V2 (both L2 and L4) Delay Request. | |
3573 | */ | |
3574 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
3575 | /* Also time stamps V2 Path Delay Request/Response. */ | |
3576 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; | |
3577 | rxmtrl = E1000_RXMTRL_PTP_V2_DELAY_REQ_MESSAGE; | |
3578 | is_l2 = true; | |
3579 | is_l4 = true; | |
3580 | break; | |
3581 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: | |
3582 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: | |
3583 | /* Hardware cannot filter just V2 L4 or L2 Event messages; | |
3584 | * fall-through to all V2 (both L2 and L4) Events. | |
3585 | */ | |
3586 | case HWTSTAMP_FILTER_PTP_V2_EVENT: | |
3587 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2; | |
3588 | config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; | |
3589 | is_l2 = true; | |
3590 | is_l4 = true; | |
3591 | break; | |
3592 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: | |
3593 | /* For V1, the hardware can only filter Sync messages or | |
3594 | * Delay Request messages but not both so fall-through to | |
3595 | * time stamp all packets. | |
3596 | */ | |
b67e1913 | 3597 | case HWTSTAMP_FILTER_ALL: |
d89777bf BA |
3598 | is_l2 = true; |
3599 | is_l4 = true; | |
b67e1913 BA |
3600 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; |
3601 | config->rx_filter = HWTSTAMP_FILTER_ALL; | |
3602 | break; | |
3603 | default: | |
3604 | return -ERANGE; | |
3605 | } | |
3606 | ||
62d7e3a2 BH |
3607 | adapter->hwtstamp_config = *config; |
3608 | ||
b67e1913 BA |
3609 | /* enable/disable Tx h/w time stamping */ |
3610 | regval = er32(TSYNCTXCTL); | |
3611 | regval &= ~E1000_TSYNCTXCTL_ENABLED; | |
3612 | regval |= tsync_tx_ctl; | |
3613 | ew32(TSYNCTXCTL, regval); | |
3614 | if ((er32(TSYNCTXCTL) & E1000_TSYNCTXCTL_ENABLED) != | |
3615 | (regval & E1000_TSYNCTXCTL_ENABLED)) { | |
3616 | e_err("Timesync Tx Control register not set as expected\n"); | |
3617 | return -EAGAIN; | |
3618 | } | |
3619 | ||
3620 | /* enable/disable Rx h/w time stamping */ | |
3621 | regval = er32(TSYNCRXCTL); | |
3622 | regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK); | |
3623 | regval |= tsync_rx_ctl; | |
3624 | ew32(TSYNCRXCTL, regval); | |
3625 | if ((er32(TSYNCRXCTL) & (E1000_TSYNCRXCTL_ENABLED | | |
3626 | E1000_TSYNCRXCTL_TYPE_MASK)) != | |
3627 | (regval & (E1000_TSYNCRXCTL_ENABLED | | |
3628 | E1000_TSYNCRXCTL_TYPE_MASK))) { | |
3629 | e_err("Timesync Rx Control register not set as expected\n"); | |
3630 | return -EAGAIN; | |
3631 | } | |
3632 | ||
d89777bf BA |
3633 | /* L2: define ethertype filter for time stamped packets */ |
3634 | if (is_l2) | |
3635 | rxmtrl |= ETH_P_1588; | |
3636 | ||
3637 | /* define which PTP packets get time stamped */ | |
3638 | ew32(RXMTRL, rxmtrl); | |
3639 | ||
3640 | /* Filter by destination port */ | |
3641 | if (is_l4) { | |
3642 | rxudp = PTP_EV_PORT; | |
3643 | cpu_to_be16s(&rxudp); | |
3644 | } | |
3645 | ew32(RXUDP, rxudp); | |
3646 | ||
3647 | e1e_flush(); | |
3648 | ||
b67e1913 | 3649 | /* Clear TSYNCRXCTL_VALID & TSYNCTXCTL_VALID bit */ |
70806a7f BA |
3650 | er32(RXSTMPH); |
3651 | er32(TXSTMPH); | |
b67e1913 BA |
3652 | |
3653 | /* Get and set the System Time Register SYSTIM base frequency */ | |
3654 | ret_val = e1000e_get_base_timinca(adapter, ®val); | |
3655 | if (ret_val) | |
3656 | return ret_val; | |
3657 | ew32(TIMINCA, regval); | |
3658 | ||
3659 | /* reset the ns time counter */ | |
3660 | timecounter_init(&adapter->tc, &adapter->cc, | |
3661 | ktime_to_ns(ktime_get_real())); | |
3662 | ||
3663 | return 0; | |
3664 | } | |
3665 | ||
bc7f75fa | 3666 | /** |
ad68076e | 3667 | * e1000_configure - configure the hardware for Rx and Tx |
bc7f75fa AK |
3668 | * @adapter: private board structure |
3669 | **/ | |
3670 | static void e1000_configure(struct e1000_adapter *adapter) | |
3671 | { | |
55aa6985 BA |
3672 | struct e1000_ring *rx_ring = adapter->rx_ring; |
3673 | ||
ef9b965a | 3674 | e1000e_set_rx_mode(adapter->netdev); |
bc7f75fa AK |
3675 | |
3676 | e1000_restore_vlan(adapter); | |
cd791618 | 3677 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
3678 | |
3679 | e1000_configure_tx(adapter); | |
70495a50 BA |
3680 | |
3681 | if (adapter->netdev->features & NETIF_F_RXHASH) | |
3682 | e1000e_setup_rss_hash(adapter); | |
bc7f75fa AK |
3683 | e1000_setup_rctl(adapter); |
3684 | e1000_configure_rx(adapter); | |
55aa6985 | 3685 | adapter->alloc_rx_buf(rx_ring, e1000_desc_unused(rx_ring), GFP_KERNEL); |
bc7f75fa AK |
3686 | } |
3687 | ||
3688 | /** | |
3689 | * e1000e_power_up_phy - restore link in case the phy was powered down | |
3690 | * @adapter: address of board private structure | |
3691 | * | |
3692 | * The phy may be powered down to save power and turn off link when the | |
3693 | * driver is unloaded and wake on lan is not enabled (among others) | |
3694 | * *** this routine MUST be followed by a call to e1000e_reset *** | |
3695 | **/ | |
3696 | void e1000e_power_up_phy(struct e1000_adapter *adapter) | |
3697 | { | |
17f208de BA |
3698 | if (adapter->hw.phy.ops.power_up) |
3699 | adapter->hw.phy.ops.power_up(&adapter->hw); | |
bc7f75fa AK |
3700 | |
3701 | adapter->hw.mac.ops.setup_link(&adapter->hw); | |
3702 | } | |
3703 | ||
3704 | /** | |
3705 | * e1000_power_down_phy - Power down the PHY | |
3706 | * | |
17f208de BA |
3707 | * Power down the PHY so no link is implied when interface is down. |
3708 | * The PHY cannot be powered down if management or WoL is active. | |
bc7f75fa AK |
3709 | */ |
3710 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
3711 | { | |
17f208de BA |
3712 | if (adapter->hw.phy.ops.power_down) |
3713 | adapter->hw.phy.ops.power_down(&adapter->hw); | |
bc7f75fa AK |
3714 | } |
3715 | ||
3716 | /** | |
3717 | * e1000e_reset - bring the hardware into a known good state | |
3718 | * | |
3719 | * This function boots the hardware and enables some settings that | |
3720 | * require a configuration cycle of the hardware - those cannot be | |
3721 | * set/changed during runtime. After reset the device needs to be | |
ad68076e | 3722 | * properly configured for Rx, Tx etc. |
bc7f75fa AK |
3723 | */ |
3724 | void e1000e_reset(struct e1000_adapter *adapter) | |
3725 | { | |
3726 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
318a94d6 | 3727 | struct e1000_fc_info *fc = &adapter->hw.fc; |
bc7f75fa AK |
3728 | struct e1000_hw *hw = &adapter->hw; |
3729 | u32 tx_space, min_tx_space, min_rx_space; | |
318a94d6 | 3730 | u32 pba = adapter->pba; |
bc7f75fa AK |
3731 | u16 hwm; |
3732 | ||
ad68076e | 3733 | /* reset Packet Buffer Allocation to default */ |
318a94d6 | 3734 | ew32(PBA, pba); |
df762464 | 3735 | |
318a94d6 | 3736 | if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
e921eb1a | 3737 | /* To maintain wire speed transmits, the Tx FIFO should be |
bc7f75fa AK |
3738 | * large enough to accommodate two full transmit packets, |
3739 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
3740 | * the Rx FIFO should be large enough to accommodate at least | |
3741 | * one full receive packet and is similarly rounded up and | |
ad68076e BA |
3742 | * expressed in KB. |
3743 | */ | |
df762464 | 3744 | pba = er32(PBA); |
bc7f75fa | 3745 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
df762464 | 3746 | tx_space = pba >> 16; |
bc7f75fa | 3747 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
df762464 | 3748 | pba &= 0xffff; |
e921eb1a | 3749 | /* the Tx fifo also stores 16 bytes of information about the Tx |
ad68076e | 3750 | * but don't include ethernet FCS because hardware appends it |
318a94d6 JK |
3751 | */ |
3752 | min_tx_space = (adapter->max_frame_size + | |
e5fe2541 | 3753 | sizeof(struct e1000_tx_desc) - ETH_FCS_LEN) * 2; |
bc7f75fa AK |
3754 | min_tx_space = ALIGN(min_tx_space, 1024); |
3755 | min_tx_space >>= 10; | |
3756 | /* software strips receive CRC, so leave room for it */ | |
318a94d6 | 3757 | min_rx_space = adapter->max_frame_size; |
bc7f75fa AK |
3758 | min_rx_space = ALIGN(min_rx_space, 1024); |
3759 | min_rx_space >>= 10; | |
3760 | ||
e921eb1a | 3761 | /* If current Tx allocation is less than the min Tx FIFO size, |
bc7f75fa | 3762 | * and the min Tx FIFO size is less than the current Rx FIFO |
ad68076e BA |
3763 | * allocation, take space away from current Rx allocation |
3764 | */ | |
df762464 AK |
3765 | if ((tx_space < min_tx_space) && |
3766 | ((min_tx_space - tx_space) < pba)) { | |
3767 | pba -= min_tx_space - tx_space; | |
bc7f75fa | 3768 | |
e921eb1a | 3769 | /* if short on Rx space, Rx wins and must trump Tx |
419e551c | 3770 | * adjustment |
ad68076e | 3771 | */ |
79d4e908 | 3772 | if (pba < min_rx_space) |
df762464 | 3773 | pba = min_rx_space; |
bc7f75fa | 3774 | } |
df762464 AK |
3775 | |
3776 | ew32(PBA, pba); | |
bc7f75fa AK |
3777 | } |
3778 | ||
e921eb1a | 3779 | /* flow control settings |
ad68076e | 3780 | * |
38eb394e | 3781 | * The high water mark must be low enough to fit one full frame |
bc7f75fa AK |
3782 | * (or the size used for early receive) above it in the Rx FIFO. |
3783 | * Set it to the lower of: | |
3784 | * - 90% of the Rx FIFO size, and | |
38eb394e | 3785 | * - the full Rx FIFO size minus one full frame |
ad68076e | 3786 | */ |
d3738bb8 BA |
3787 | if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
3788 | fc->pause_time = 0xFFFF; | |
3789 | else | |
3790 | fc->pause_time = E1000_FC_PAUSE_TIME; | |
b20caa80 | 3791 | fc->send_xon = true; |
d3738bb8 BA |
3792 | fc->current_mode = fc->requested_mode; |
3793 | ||
3794 | switch (hw->mac.type) { | |
79d4e908 BA |
3795 | case e1000_ich9lan: |
3796 | case e1000_ich10lan: | |
3797 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
3798 | pba = 14; | |
3799 | ew32(PBA, pba); | |
3800 | fc->high_water = 0x2800; | |
3801 | fc->low_water = fc->high_water - 8; | |
3802 | break; | |
3803 | } | |
3804 | /* fall-through */ | |
d3738bb8 | 3805 | default: |
79d4e908 BA |
3806 | hwm = min(((pba << 10) * 9 / 10), |
3807 | ((pba << 10) - adapter->max_frame_size)); | |
d3738bb8 | 3808 | |
e80bd1d1 | 3809 | fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ |
d3738bb8 BA |
3810 | fc->low_water = fc->high_water - 8; |
3811 | break; | |
3812 | case e1000_pchlan: | |
e921eb1a | 3813 | /* Workaround PCH LOM adapter hangs with certain network |
38eb394e BA |
3814 | * loads. If hangs persist, try disabling Tx flow control. |
3815 | */ | |
3816 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
3817 | fc->high_water = 0x3500; | |
e80bd1d1 | 3818 | fc->low_water = 0x1500; |
38eb394e BA |
3819 | } else { |
3820 | fc->high_water = 0x5000; | |
e80bd1d1 | 3821 | fc->low_water = 0x3000; |
38eb394e | 3822 | } |
a305595b | 3823 | fc->refresh_time = 0x1000; |
d3738bb8 BA |
3824 | break; |
3825 | case e1000_pch2lan: | |
2fbe4526 | 3826 | case e1000_pch_lpt: |
d3738bb8 | 3827 | fc->refresh_time = 0x0400; |
347b5201 BA |
3828 | |
3829 | if (adapter->netdev->mtu <= ETH_DATA_LEN) { | |
3830 | fc->high_water = 0x05C20; | |
3831 | fc->low_water = 0x05048; | |
3832 | fc->pause_time = 0x0650; | |
3833 | break; | |
828bac87 | 3834 | } |
347b5201 | 3835 | |
ce345e08 BA |
3836 | pba = 14; |
3837 | ew32(PBA, pba); | |
347b5201 BA |
3838 | fc->high_water = ((pba << 10) * 9 / 10) & E1000_FCRTH_RTH; |
3839 | fc->low_water = ((pba << 10) * 8 / 10) & E1000_FCRTL_RTL; | |
d3738bb8 | 3840 | break; |
38eb394e | 3841 | } |
bc7f75fa | 3842 | |
e921eb1a | 3843 | /* Alignment of Tx data is on an arbitrary byte boundary with the |
d821a4c4 BA |
3844 | * maximum size per Tx descriptor limited only to the transmit |
3845 | * allocation of the packet buffer minus 96 bytes with an upper | |
3846 | * limit of 24KB due to receive synchronization limitations. | |
3847 | */ | |
3848 | adapter->tx_fifo_limit = min_t(u32, ((er32(PBA) >> 16) << 10) - 96, | |
3849 | 24 << 10); | |
3850 | ||
e921eb1a | 3851 | /* Disable Adaptive Interrupt Moderation if 2 full packets cannot |
79d4e908 | 3852 | * fit in receive buffer. |
828bac87 BA |
3853 | */ |
3854 | if (adapter->itr_setting & 0x3) { | |
79d4e908 | 3855 | if ((adapter->max_frame_size * 2) > (pba << 10)) { |
828bac87 BA |
3856 | if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) { |
3857 | dev_info(&adapter->pdev->dev, | |
17e813ec | 3858 | "Interrupt Throttle Rate off\n"); |
828bac87 | 3859 | adapter->flags2 |= FLAG2_DISABLE_AIM; |
22a4cca2 | 3860 | e1000e_write_itr(adapter, 0); |
828bac87 BA |
3861 | } |
3862 | } else if (adapter->flags2 & FLAG2_DISABLE_AIM) { | |
3863 | dev_info(&adapter->pdev->dev, | |
17e813ec | 3864 | "Interrupt Throttle Rate on\n"); |
828bac87 BA |
3865 | adapter->flags2 &= ~FLAG2_DISABLE_AIM; |
3866 | adapter->itr = 20000; | |
22a4cca2 | 3867 | e1000e_write_itr(adapter, adapter->itr); |
828bac87 BA |
3868 | } |
3869 | } | |
3870 | ||
bc7f75fa AK |
3871 | /* Allow time for pending master requests to run */ |
3872 | mac->ops.reset_hw(hw); | |
97ac8cae | 3873 | |
e921eb1a | 3874 | /* For parts with AMT enabled, let the firmware know |
97ac8cae BA |
3875 | * that the network interface is in control |
3876 | */ | |
c43bc57e | 3877 | if (adapter->flags & FLAG_HAS_AMT) |
31dbe5b4 | 3878 | e1000e_get_hw_control(adapter); |
97ac8cae | 3879 | |
bc7f75fa AK |
3880 | ew32(WUC, 0); |
3881 | ||
3882 | if (mac->ops.init_hw(hw)) | |
44defeb3 | 3883 | e_err("Hardware Error\n"); |
bc7f75fa AK |
3884 | |
3885 | e1000_update_mng_vlan(adapter); | |
3886 | ||
3887 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
3888 | ew32(VET, ETH_P_8021Q); | |
3889 | ||
3890 | e1000e_reset_adaptive(hw); | |
31dbe5b4 | 3891 | |
b67e1913 | 3892 | /* initialize systim and reset the ns time counter */ |
62d7e3a2 | 3893 | e1000e_config_hwtstamp(adapter, &adapter->hwtstamp_config); |
b67e1913 | 3894 | |
d495bcb8 BA |
3895 | /* Set EEE advertisement as appropriate */ |
3896 | if (adapter->flags2 & FLAG2_HAS_EEE) { | |
3897 | s32 ret_val; | |
3898 | u16 adv_addr; | |
3899 | ||
3900 | switch (hw->phy.type) { | |
3901 | case e1000_phy_82579: | |
3902 | adv_addr = I82579_EEE_ADVERTISEMENT; | |
3903 | break; | |
3904 | case e1000_phy_i217: | |
3905 | adv_addr = I217_EEE_ADVERTISEMENT; | |
3906 | break; | |
3907 | default: | |
3908 | dev_err(&adapter->pdev->dev, | |
3909 | "Invalid PHY type setting EEE advertisement\n"); | |
3910 | return; | |
3911 | } | |
3912 | ||
3913 | ret_val = hw->phy.ops.acquire(hw); | |
3914 | if (ret_val) { | |
3915 | dev_err(&adapter->pdev->dev, | |
3916 | "EEE advertisement - unable to acquire PHY\n"); | |
3917 | return; | |
3918 | } | |
3919 | ||
3920 | e1000_write_emi_reg_locked(hw, adv_addr, | |
3921 | hw->dev_spec.ich8lan.eee_disable ? | |
3922 | 0 : adapter->eee_advert); | |
3923 | ||
3924 | hw->phy.ops.release(hw); | |
3925 | } | |
3926 | ||
31dbe5b4 | 3927 | if (!netif_running(adapter->netdev) && |
28002099 | 3928 | !test_bit(__E1000_TESTING, &adapter->state)) |
31dbe5b4 | 3929 | e1000_power_down_phy(adapter); |
31dbe5b4 | 3930 | |
bc7f75fa AK |
3931 | e1000_get_phy_info(hw); |
3932 | ||
918d7197 BA |
3933 | if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
3934 | !(adapter->flags & FLAG_SMART_POWER_DOWN)) { | |
bc7f75fa | 3935 | u16 phy_data = 0; |
e921eb1a | 3936 | /* speed up time to link by disabling smart power down, ignore |
bc7f75fa | 3937 | * the return value of this function because there is nothing |
ad68076e BA |
3938 | * different we would do if it failed |
3939 | */ | |
bc7f75fa AK |
3940 | e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
3941 | phy_data &= ~IGP02E1000_PM_SPD; | |
3942 | e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); | |
3943 | } | |
bc7f75fa AK |
3944 | } |
3945 | ||
3946 | int e1000e_up(struct e1000_adapter *adapter) | |
3947 | { | |
3948 | struct e1000_hw *hw = &adapter->hw; | |
3949 | ||
3950 | /* hardware has been reset, we need to reload some things */ | |
3951 | e1000_configure(adapter); | |
3952 | ||
3953 | clear_bit(__E1000_DOWN, &adapter->state); | |
3954 | ||
4662e82b BA |
3955 | if (adapter->msix_entries) |
3956 | e1000_configure_msix(adapter); | |
bc7f75fa AK |
3957 | e1000_irq_enable(adapter); |
3958 | ||
400484fa | 3959 | netif_start_queue(adapter->netdev); |
4cb9be7a | 3960 | |
bc7f75fa | 3961 | /* fire a link change interrupt to start the watchdog */ |
52a9b231 BA |
3962 | if (adapter->msix_entries) |
3963 | ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); | |
3964 | else | |
3965 | ew32(ICS, E1000_ICS_LSC); | |
3966 | ||
bc7f75fa AK |
3967 | return 0; |
3968 | } | |
3969 | ||
713b3c9e JB |
3970 | static void e1000e_flush_descriptors(struct e1000_adapter *adapter) |
3971 | { | |
3972 | struct e1000_hw *hw = &adapter->hw; | |
3973 | ||
3974 | if (!(adapter->flags2 & FLAG2_DMA_BURST)) | |
3975 | return; | |
3976 | ||
3977 | /* flush pending descriptor writebacks to memory */ | |
3978 | ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); | |
3979 | ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); | |
3980 | ||
3981 | /* execute the writes immediately */ | |
3982 | e1e_flush(); | |
bf03085f | 3983 | |
e921eb1a | 3984 | /* due to rare timing issues, write to TIDV/RDTR again to ensure the |
bf03085f MV |
3985 | * write is successful |
3986 | */ | |
3987 | ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD); | |
3988 | ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD); | |
713b3c9e JB |
3989 | |
3990 | /* execute the writes immediately */ | |
3991 | e1e_flush(); | |
3992 | } | |
3993 | ||
67fd4fcb JK |
3994 | static void e1000e_update_stats(struct e1000_adapter *adapter); |
3995 | ||
28002099 DE |
3996 | /** |
3997 | * e1000e_down - quiesce the device and optionally reset the hardware | |
3998 | * @adapter: board private structure | |
3999 | * @reset: boolean flag to reset the hardware or not | |
4000 | */ | |
4001 | void e1000e_down(struct e1000_adapter *adapter, bool reset) | |
bc7f75fa AK |
4002 | { |
4003 | struct net_device *netdev = adapter->netdev; | |
4004 | struct e1000_hw *hw = &adapter->hw; | |
4005 | u32 tctl, rctl; | |
4006 | ||
e921eb1a | 4007 | /* signal that we're down so the interrupt handler does not |
ad68076e BA |
4008 | * reschedule our watchdog timer |
4009 | */ | |
bc7f75fa AK |
4010 | set_bit(__E1000_DOWN, &adapter->state); |
4011 | ||
4012 | /* disable receives in the hardware */ | |
4013 | rctl = er32(RCTL); | |
7f99ae63 BA |
4014 | if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX)) |
4015 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
bc7f75fa AK |
4016 | /* flush and sleep below */ |
4017 | ||
4cb9be7a | 4018 | netif_stop_queue(netdev); |
bc7f75fa AK |
4019 | |
4020 | /* disable transmits in the hardware */ | |
4021 | tctl = er32(TCTL); | |
4022 | tctl &= ~E1000_TCTL_EN; | |
4023 | ew32(TCTL, tctl); | |
7f99ae63 | 4024 | |
bc7f75fa AK |
4025 | /* flush both disables and wait for them to finish */ |
4026 | e1e_flush(); | |
1bba4386 | 4027 | usleep_range(10000, 20000); |
bc7f75fa | 4028 | |
bc7f75fa AK |
4029 | e1000_irq_disable(adapter); |
4030 | ||
a3b87a4c BA |
4031 | napi_synchronize(&adapter->napi); |
4032 | ||
bc7f75fa AK |
4033 | del_timer_sync(&adapter->watchdog_timer); |
4034 | del_timer_sync(&adapter->phy_info_timer); | |
4035 | ||
bc7f75fa | 4036 | netif_carrier_off(netdev); |
67fd4fcb JK |
4037 | |
4038 | spin_lock(&adapter->stats64_lock); | |
4039 | e1000e_update_stats(adapter); | |
4040 | spin_unlock(&adapter->stats64_lock); | |
4041 | ||
400484fa | 4042 | e1000e_flush_descriptors(adapter); |
55aa6985 BA |
4043 | e1000_clean_tx_ring(adapter->tx_ring); |
4044 | e1000_clean_rx_ring(adapter->rx_ring); | |
400484fa | 4045 | |
bc7f75fa AK |
4046 | adapter->link_speed = 0; |
4047 | adapter->link_duplex = 0; | |
4048 | ||
da1e2046 BA |
4049 | /* Disable Si errata workaround on PCHx for jumbo frame flow */ |
4050 | if ((hw->mac.type >= e1000_pch2lan) && | |
4051 | (adapter->netdev->mtu > ETH_DATA_LEN) && | |
4052 | e1000_lv_jumbo_workaround_ich8lan(hw, false)) | |
4053 | e_dbg("failed to disable jumbo frame workaround mode\n"); | |
4054 | ||
28002099 | 4055 | if (reset && !pci_channel_offline(adapter->pdev)) |
52cc3086 | 4056 | e1000e_reset(adapter); |
bc7f75fa AK |
4057 | } |
4058 | ||
4059 | void e1000e_reinit_locked(struct e1000_adapter *adapter) | |
4060 | { | |
4061 | might_sleep(); | |
4062 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
1bba4386 | 4063 | usleep_range(1000, 2000); |
28002099 | 4064 | e1000e_down(adapter, true); |
bc7f75fa AK |
4065 | e1000e_up(adapter); |
4066 | clear_bit(__E1000_RESETTING, &adapter->state); | |
4067 | } | |
4068 | ||
b67e1913 BA |
4069 | /** |
4070 | * e1000e_cyclecounter_read - read raw cycle counter (used by time counter) | |
4071 | * @cc: cyclecounter structure | |
4072 | **/ | |
4073 | static cycle_t e1000e_cyclecounter_read(const struct cyclecounter *cc) | |
4074 | { | |
4075 | struct e1000_adapter *adapter = container_of(cc, struct e1000_adapter, | |
4076 | cc); | |
4077 | struct e1000_hw *hw = &adapter->hw; | |
4078 | cycle_t systim; | |
4079 | ||
4080 | /* latch SYSTIMH on read of SYSTIML */ | |
4081 | systim = (cycle_t)er32(SYSTIML); | |
4082 | systim |= (cycle_t)er32(SYSTIMH) << 32; | |
4083 | ||
4084 | return systim; | |
4085 | } | |
4086 | ||
bc7f75fa AK |
4087 | /** |
4088 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
4089 | * @adapter: board private structure to initialize | |
4090 | * | |
4091 | * e1000_sw_init initializes the Adapter private data structure. | |
4092 | * Fields are initialized based on PCI device information and | |
4093 | * OS network device settings (MTU size). | |
4094 | **/ | |
9f9a12f8 | 4095 | static int e1000_sw_init(struct e1000_adapter *adapter) |
bc7f75fa | 4096 | { |
bc7f75fa AK |
4097 | struct net_device *netdev = adapter->netdev; |
4098 | ||
4099 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
4100 | adapter->rx_ps_bsize0 = 128; | |
318a94d6 JK |
4101 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
4102 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
55aa6985 BA |
4103 | adapter->tx_ring_count = E1000_DEFAULT_TXD; |
4104 | adapter->rx_ring_count = E1000_DEFAULT_RXD; | |
bc7f75fa | 4105 | |
67fd4fcb JK |
4106 | spin_lock_init(&adapter->stats64_lock); |
4107 | ||
4662e82b | 4108 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa | 4109 | |
4662e82b BA |
4110 | if (e1000_alloc_queues(adapter)) |
4111 | return -ENOMEM; | |
bc7f75fa | 4112 | |
b67e1913 BA |
4113 | /* Setup hardware time stamping cyclecounter */ |
4114 | if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { | |
4115 | adapter->cc.read = e1000e_cyclecounter_read; | |
4116 | adapter->cc.mask = CLOCKSOURCE_MASK(64); | |
4117 | adapter->cc.mult = 1; | |
4118 | /* cc.shift set in e1000e_get_base_tininca() */ | |
4119 | ||
4120 | spin_lock_init(&adapter->systim_lock); | |
4121 | INIT_WORK(&adapter->tx_hwtstamp_work, e1000e_tx_hwtstamp_work); | |
4122 | } | |
4123 | ||
bc7f75fa | 4124 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
bc7f75fa AK |
4125 | e1000_irq_disable(adapter); |
4126 | ||
bc7f75fa AK |
4127 | set_bit(__E1000_DOWN, &adapter->state); |
4128 | return 0; | |
bc7f75fa AK |
4129 | } |
4130 | ||
f8d59f78 BA |
4131 | /** |
4132 | * e1000_intr_msi_test - Interrupt Handler | |
4133 | * @irq: interrupt number | |
4134 | * @data: pointer to a network interface device structure | |
4135 | **/ | |
8bb62869 | 4136 | static irqreturn_t e1000_intr_msi_test(int __always_unused irq, void *data) |
f8d59f78 BA |
4137 | { |
4138 | struct net_device *netdev = data; | |
4139 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4140 | struct e1000_hw *hw = &adapter->hw; | |
4141 | u32 icr = er32(ICR); | |
4142 | ||
3bb99fe2 | 4143 | e_dbg("icr is %08X\n", icr); |
f8d59f78 BA |
4144 | if (icr & E1000_ICR_RXSEQ) { |
4145 | adapter->flags &= ~FLAG_MSI_TEST_FAILED; | |
e921eb1a | 4146 | /* Force memory writes to complete before acknowledging the |
bc76329d BA |
4147 | * interrupt is handled. |
4148 | */ | |
f8d59f78 BA |
4149 | wmb(); |
4150 | } | |
4151 | ||
4152 | return IRQ_HANDLED; | |
4153 | } | |
4154 | ||
4155 | /** | |
4156 | * e1000_test_msi_interrupt - Returns 0 for successful test | |
4157 | * @adapter: board private struct | |
4158 | * | |
4159 | * code flow taken from tg3.c | |
4160 | **/ | |
4161 | static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) | |
4162 | { | |
4163 | struct net_device *netdev = adapter->netdev; | |
4164 | struct e1000_hw *hw = &adapter->hw; | |
4165 | int err; | |
4166 | ||
4167 | /* poll_enable hasn't been called yet, so don't need disable */ | |
4168 | /* clear any pending events */ | |
4169 | er32(ICR); | |
4170 | ||
4171 | /* free the real vector and request a test handler */ | |
4172 | e1000_free_irq(adapter); | |
4662e82b | 4173 | e1000e_reset_interrupt_capability(adapter); |
f8d59f78 BA |
4174 | |
4175 | /* Assume that the test fails, if it succeeds then the test | |
e921eb1a BA |
4176 | * MSI irq handler will unset this flag |
4177 | */ | |
f8d59f78 BA |
4178 | adapter->flags |= FLAG_MSI_TEST_FAILED; |
4179 | ||
4180 | err = pci_enable_msi(adapter->pdev); | |
4181 | if (err) | |
4182 | goto msi_test_failed; | |
4183 | ||
a0607fd3 | 4184 | err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
f8d59f78 BA |
4185 | netdev->name, netdev); |
4186 | if (err) { | |
4187 | pci_disable_msi(adapter->pdev); | |
4188 | goto msi_test_failed; | |
4189 | } | |
4190 | ||
e921eb1a | 4191 | /* Force memory writes to complete before enabling and firing an |
bc76329d BA |
4192 | * interrupt. |
4193 | */ | |
f8d59f78 BA |
4194 | wmb(); |
4195 | ||
4196 | e1000_irq_enable(adapter); | |
4197 | ||
4198 | /* fire an unusual interrupt on the test handler */ | |
4199 | ew32(ICS, E1000_ICS_RXSEQ); | |
4200 | e1e_flush(); | |
569a3aff | 4201 | msleep(100); |
f8d59f78 BA |
4202 | |
4203 | e1000_irq_disable(adapter); | |
4204 | ||
bc76329d | 4205 | rmb(); /* read flags after interrupt has been fired */ |
f8d59f78 BA |
4206 | |
4207 | if (adapter->flags & FLAG_MSI_TEST_FAILED) { | |
4662e82b | 4208 | adapter->int_mode = E1000E_INT_MODE_LEGACY; |
068e8a30 | 4209 | e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
24b706b2 | 4210 | } else { |
068e8a30 | 4211 | e_dbg("MSI interrupt test succeeded!\n"); |
24b706b2 | 4212 | } |
f8d59f78 BA |
4213 | |
4214 | free_irq(adapter->pdev->irq, netdev); | |
4215 | pci_disable_msi(adapter->pdev); | |
4216 | ||
f8d59f78 | 4217 | msi_test_failed: |
4662e82b | 4218 | e1000e_set_interrupt_capability(adapter); |
068e8a30 | 4219 | return e1000_request_irq(adapter); |
f8d59f78 BA |
4220 | } |
4221 | ||
4222 | /** | |
4223 | * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored | |
4224 | * @adapter: board private struct | |
4225 | * | |
4226 | * code flow taken from tg3.c, called with e1000 interrupts disabled. | |
4227 | **/ | |
4228 | static int e1000_test_msi(struct e1000_adapter *adapter) | |
4229 | { | |
4230 | int err; | |
4231 | u16 pci_cmd; | |
4232 | ||
4233 | if (!(adapter->flags & FLAG_MSI_ENABLED)) | |
4234 | return 0; | |
4235 | ||
4236 | /* disable SERR in case the MSI write causes a master abort */ | |
4237 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
36f2407f DN |
4238 | if (pci_cmd & PCI_COMMAND_SERR) |
4239 | pci_write_config_word(adapter->pdev, PCI_COMMAND, | |
4240 | pci_cmd & ~PCI_COMMAND_SERR); | |
f8d59f78 BA |
4241 | |
4242 | err = e1000_test_msi_interrupt(adapter); | |
4243 | ||
36f2407f DN |
4244 | /* re-enable SERR */ |
4245 | if (pci_cmd & PCI_COMMAND_SERR) { | |
4246 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
4247 | pci_cmd |= PCI_COMMAND_SERR; | |
4248 | pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); | |
4249 | } | |
f8d59f78 | 4250 | |
f8d59f78 BA |
4251 | return err; |
4252 | } | |
4253 | ||
bc7f75fa AK |
4254 | /** |
4255 | * e1000_open - Called when a network interface is made active | |
4256 | * @netdev: network interface device structure | |
4257 | * | |
4258 | * Returns 0 on success, negative value on failure | |
4259 | * | |
4260 | * The open entry point is called when a network interface is made | |
4261 | * active by the system (IFF_UP). At this point all resources needed | |
4262 | * for transmit and receive operations are allocated, the interrupt | |
4263 | * handler is registered with the OS, the watchdog timer is started, | |
4264 | * and the stack is notified that the interface is ready. | |
4265 | **/ | |
4266 | static int e1000_open(struct net_device *netdev) | |
4267 | { | |
4268 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4269 | struct e1000_hw *hw = &adapter->hw; | |
23606cf5 | 4270 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa AK |
4271 | int err; |
4272 | ||
4273 | /* disallow open during test */ | |
4274 | if (test_bit(__E1000_TESTING, &adapter->state)) | |
4275 | return -EBUSY; | |
4276 | ||
23606cf5 RW |
4277 | pm_runtime_get_sync(&pdev->dev); |
4278 | ||
9c563d20 JB |
4279 | netif_carrier_off(netdev); |
4280 | ||
bc7f75fa | 4281 | /* allocate transmit descriptors */ |
55aa6985 | 4282 | err = e1000e_setup_tx_resources(adapter->tx_ring); |
bc7f75fa AK |
4283 | if (err) |
4284 | goto err_setup_tx; | |
4285 | ||
4286 | /* allocate receive descriptors */ | |
55aa6985 | 4287 | err = e1000e_setup_rx_resources(adapter->rx_ring); |
bc7f75fa AK |
4288 | if (err) |
4289 | goto err_setup_rx; | |
4290 | ||
e921eb1a | 4291 | /* If AMT is enabled, let the firmware know that the network |
11b08be8 BA |
4292 | * interface is now open and reset the part to a known state. |
4293 | */ | |
4294 | if (adapter->flags & FLAG_HAS_AMT) { | |
31dbe5b4 | 4295 | e1000e_get_hw_control(adapter); |
11b08be8 BA |
4296 | e1000e_reset(adapter); |
4297 | } | |
4298 | ||
bc7f75fa AK |
4299 | e1000e_power_up_phy(adapter); |
4300 | ||
4301 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
e5fe2541 | 4302 | if ((adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) |
bc7f75fa AK |
4303 | e1000_update_mng_vlan(adapter); |
4304 | ||
79d4e908 | 4305 | /* DMA latency requirement to workaround jumbo issue */ |
3e35d991 BA |
4306 | pm_qos_add_request(&adapter->netdev->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, |
4307 | PM_QOS_DEFAULT_VALUE); | |
c128ec29 | 4308 | |
e921eb1a | 4309 | /* before we allocate an interrupt, we must be ready to handle it. |
bc7f75fa AK |
4310 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
4311 | * as soon as we call pci_request_irq, so we have to setup our | |
ad68076e BA |
4312 | * clean_rx handler before we do so. |
4313 | */ | |
bc7f75fa AK |
4314 | e1000_configure(adapter); |
4315 | ||
4316 | err = e1000_request_irq(adapter); | |
4317 | if (err) | |
4318 | goto err_req_irq; | |
4319 | ||
e921eb1a | 4320 | /* Work around PCIe errata with MSI interrupts causing some chipsets to |
f8d59f78 BA |
4321 | * ignore e1000e MSI messages, which means we need to test our MSI |
4322 | * interrupt now | |
4323 | */ | |
4662e82b | 4324 | if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
f8d59f78 BA |
4325 | err = e1000_test_msi(adapter); |
4326 | if (err) { | |
4327 | e_err("Interrupt allocation failed\n"); | |
4328 | goto err_req_irq; | |
4329 | } | |
4330 | } | |
4331 | ||
bc7f75fa AK |
4332 | /* From here on the code is the same as e1000e_up() */ |
4333 | clear_bit(__E1000_DOWN, &adapter->state); | |
4334 | ||
4335 | napi_enable(&adapter->napi); | |
4336 | ||
4337 | e1000_irq_enable(adapter); | |
4338 | ||
09357b00 | 4339 | adapter->tx_hang_recheck = false; |
4cb9be7a | 4340 | netif_start_queue(netdev); |
d55b53ff | 4341 | |
66148bab | 4342 | hw->mac.get_link_status = true; |
23606cf5 RW |
4343 | pm_runtime_put(&pdev->dev); |
4344 | ||
bc7f75fa | 4345 | /* fire a link status change interrupt to start the watchdog */ |
52a9b231 BA |
4346 | if (adapter->msix_entries) |
4347 | ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); | |
4348 | else | |
4349 | ew32(ICS, E1000_ICS_LSC); | |
bc7f75fa AK |
4350 | |
4351 | return 0; | |
4352 | ||
4353 | err_req_irq: | |
31dbe5b4 | 4354 | e1000e_release_hw_control(adapter); |
bc7f75fa | 4355 | e1000_power_down_phy(adapter); |
55aa6985 | 4356 | e1000e_free_rx_resources(adapter->rx_ring); |
bc7f75fa | 4357 | err_setup_rx: |
55aa6985 | 4358 | e1000e_free_tx_resources(adapter->tx_ring); |
bc7f75fa AK |
4359 | err_setup_tx: |
4360 | e1000e_reset(adapter); | |
23606cf5 | 4361 | pm_runtime_put_sync(&pdev->dev); |
bc7f75fa AK |
4362 | |
4363 | return err; | |
4364 | } | |
4365 | ||
4366 | /** | |
4367 | * e1000_close - Disables a network interface | |
4368 | * @netdev: network interface device structure | |
4369 | * | |
4370 | * Returns 0, this is not allowed to fail | |
4371 | * | |
4372 | * The close entry point is called when an interface is de-activated | |
4373 | * by the OS. The hardware is still under the drivers control, but | |
4374 | * needs to be disabled. A global MAC reset is issued to stop the | |
4375 | * hardware, and all transmit and receive resources are freed. | |
4376 | **/ | |
4377 | static int e1000_close(struct net_device *netdev) | |
4378 | { | |
4379 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 | 4380 | struct pci_dev *pdev = adapter->pdev; |
bb9e44d0 BA |
4381 | int count = E1000_CHECK_RESET_COUNT; |
4382 | ||
4383 | while (test_bit(__E1000_RESETTING, &adapter->state) && count--) | |
4384 | usleep_range(10000, 20000); | |
bc7f75fa AK |
4385 | |
4386 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
23606cf5 RW |
4387 | |
4388 | pm_runtime_get_sync(&pdev->dev); | |
4389 | ||
4390 | if (!test_bit(__E1000_DOWN, &adapter->state)) { | |
28002099 | 4391 | e1000e_down(adapter, true); |
23606cf5 | 4392 | e1000_free_irq(adapter); |
63eb48f1 DE |
4393 | |
4394 | /* Link status message must follow this format */ | |
4395 | pr_info("%s NIC Link is Down\n", adapter->netdev->name); | |
23606cf5 | 4396 | } |
a3b87a4c BA |
4397 | |
4398 | napi_disable(&adapter->napi); | |
4399 | ||
55aa6985 BA |
4400 | e1000e_free_tx_resources(adapter->tx_ring); |
4401 | e1000e_free_rx_resources(adapter->rx_ring); | |
bc7f75fa | 4402 | |
e921eb1a | 4403 | /* kill manageability vlan ID if supported, but not if a vlan with |
ad68076e BA |
4404 | * the same ID is registered on the host OS (let 8021q kill it) |
4405 | */ | |
e5fe2541 | 4406 | if (adapter->hw.mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) |
80d5c368 PM |
4407 | e1000_vlan_rx_kill_vid(netdev, htons(ETH_P_8021Q), |
4408 | adapter->mng_vlan_id); | |
bc7f75fa | 4409 | |
e921eb1a | 4410 | /* If AMT is enabled, let the firmware know that the network |
ad68076e BA |
4411 | * interface is now closed |
4412 | */ | |
31dbe5b4 BA |
4413 | if ((adapter->flags & FLAG_HAS_AMT) && |
4414 | !test_bit(__E1000_TESTING, &adapter->state)) | |
4415 | e1000e_release_hw_control(adapter); | |
bc7f75fa | 4416 | |
3e35d991 | 4417 | pm_qos_remove_request(&adapter->netdev->pm_qos_req); |
c128ec29 | 4418 | |
23606cf5 RW |
4419 | pm_runtime_put_sync(&pdev->dev); |
4420 | ||
bc7f75fa AK |
4421 | return 0; |
4422 | } | |
fc830b78 | 4423 | |
bc7f75fa AK |
4424 | /** |
4425 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
4426 | * @netdev: network interface device structure | |
4427 | * @p: pointer to an address structure | |
4428 | * | |
4429 | * Returns 0 on success, negative on failure | |
4430 | **/ | |
4431 | static int e1000_set_mac(struct net_device *netdev, void *p) | |
4432 | { | |
4433 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
69e1e019 | 4434 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
4435 | struct sockaddr *addr = p; |
4436 | ||
4437 | if (!is_valid_ether_addr(addr->sa_data)) | |
4438 | return -EADDRNOTAVAIL; | |
4439 | ||
4440 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
4441 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
4442 | ||
69e1e019 | 4443 | hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0); |
bc7f75fa AK |
4444 | |
4445 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { | |
4446 | /* activate the work around */ | |
4447 | e1000e_set_laa_state_82571(&adapter->hw, 1); | |
4448 | ||
e921eb1a | 4449 | /* Hold a copy of the LAA in RAR[14] This is done so that |
bc7f75fa AK |
4450 | * between the time RAR[0] gets clobbered and the time it |
4451 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
4452 | * of the RARs and no incoming packets directed to this port | |
4453 | * are dropped. Eventually the LAA will be in RAR[0] and | |
ad68076e BA |
4454 | * RAR[14] |
4455 | */ | |
69e1e019 BA |
4456 | hw->mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, |
4457 | adapter->hw.mac.rar_entry_count - 1); | |
bc7f75fa AK |
4458 | } |
4459 | ||
4460 | return 0; | |
4461 | } | |
4462 | ||
a8f88ff5 JB |
4463 | /** |
4464 | * e1000e_update_phy_task - work thread to update phy | |
4465 | * @work: pointer to our work struct | |
4466 | * | |
4467 | * this worker thread exists because we must acquire a | |
4468 | * semaphore to read the phy, which we could msleep while | |
4469 | * waiting for it, and we can't msleep in a timer. | |
4470 | **/ | |
4471 | static void e1000e_update_phy_task(struct work_struct *work) | |
4472 | { | |
4473 | struct e1000_adapter *adapter = container_of(work, | |
17e813ec BA |
4474 | struct e1000_adapter, |
4475 | update_phy_task); | |
a03206ed | 4476 | struct e1000_hw *hw = &adapter->hw; |
615b32af JB |
4477 | |
4478 | if (test_bit(__E1000_DOWN, &adapter->state)) | |
4479 | return; | |
4480 | ||
a03206ed DE |
4481 | e1000_get_phy_info(hw); |
4482 | ||
4483 | /* Enable EEE on 82579 after link up */ | |
4484 | if (hw->phy.type == e1000_phy_82579) | |
4485 | e1000_set_eee_pchlan(hw); | |
a8f88ff5 JB |
4486 | } |
4487 | ||
e921eb1a BA |
4488 | /** |
4489 | * e1000_update_phy_info - timre call-back to update PHY info | |
4490 | * @data: pointer to adapter cast into an unsigned long | |
4491 | * | |
ad68076e BA |
4492 | * Need to wait a few seconds after link up to get diagnostic information from |
4493 | * the phy | |
e921eb1a | 4494 | **/ |
bc7f75fa AK |
4495 | static void e1000_update_phy_info(unsigned long data) |
4496 | { | |
53aa82da | 4497 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
615b32af JB |
4498 | |
4499 | if (test_bit(__E1000_DOWN, &adapter->state)) | |
4500 | return; | |
4501 | ||
a8f88ff5 | 4502 | schedule_work(&adapter->update_phy_task); |
bc7f75fa AK |
4503 | } |
4504 | ||
8c7bbb92 BA |
4505 | /** |
4506 | * e1000e_update_phy_stats - Update the PHY statistics counters | |
4507 | * @adapter: board private structure | |
2b6b168d BA |
4508 | * |
4509 | * Read/clear the upper 16-bit PHY registers and read/accumulate lower | |
8c7bbb92 BA |
4510 | **/ |
4511 | static void e1000e_update_phy_stats(struct e1000_adapter *adapter) | |
4512 | { | |
4513 | struct e1000_hw *hw = &adapter->hw; | |
4514 | s32 ret_val; | |
4515 | u16 phy_data; | |
4516 | ||
4517 | ret_val = hw->phy.ops.acquire(hw); | |
4518 | if (ret_val) | |
4519 | return; | |
4520 | ||
e921eb1a | 4521 | /* A page set is expensive so check if already on desired page. |
8c7bbb92 BA |
4522 | * If not, set to the page with the PHY status registers. |
4523 | */ | |
2b6b168d | 4524 | hw->phy.addr = 1; |
8c7bbb92 BA |
4525 | ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, |
4526 | &phy_data); | |
4527 | if (ret_val) | |
4528 | goto release; | |
2b6b168d BA |
4529 | if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) { |
4530 | ret_val = hw->phy.ops.set_page(hw, | |
4531 | HV_STATS_PAGE << IGP_PAGE_SHIFT); | |
8c7bbb92 BA |
4532 | if (ret_val) |
4533 | goto release; | |
4534 | } | |
4535 | ||
8c7bbb92 | 4536 | /* Single Collision Count */ |
2b6b168d BA |
4537 | hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data); |
4538 | ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data); | |
8c7bbb92 BA |
4539 | if (!ret_val) |
4540 | adapter->stats.scc += phy_data; | |
4541 | ||
4542 | /* Excessive Collision Count */ | |
2b6b168d BA |
4543 | hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data); |
4544 | ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data); | |
8c7bbb92 BA |
4545 | if (!ret_val) |
4546 | adapter->stats.ecol += phy_data; | |
4547 | ||
4548 | /* Multiple Collision Count */ | |
2b6b168d BA |
4549 | hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data); |
4550 | ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data); | |
8c7bbb92 BA |
4551 | if (!ret_val) |
4552 | adapter->stats.mcc += phy_data; | |
4553 | ||
4554 | /* Late Collision Count */ | |
2b6b168d BA |
4555 | hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data); |
4556 | ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data); | |
8c7bbb92 BA |
4557 | if (!ret_val) |
4558 | adapter->stats.latecol += phy_data; | |
4559 | ||
4560 | /* Collision Count - also used for adaptive IFS */ | |
2b6b168d BA |
4561 | hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data); |
4562 | ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data); | |
8c7bbb92 BA |
4563 | if (!ret_val) |
4564 | hw->mac.collision_delta = phy_data; | |
4565 | ||
4566 | /* Defer Count */ | |
2b6b168d BA |
4567 | hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data); |
4568 | ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data); | |
8c7bbb92 BA |
4569 | if (!ret_val) |
4570 | adapter->stats.dc += phy_data; | |
4571 | ||
4572 | /* Transmit with no CRS */ | |
2b6b168d BA |
4573 | hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data); |
4574 | ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data); | |
8c7bbb92 BA |
4575 | if (!ret_val) |
4576 | adapter->stats.tncrs += phy_data; | |
4577 | ||
4578 | release: | |
4579 | hw->phy.ops.release(hw); | |
4580 | } | |
4581 | ||
bc7f75fa AK |
4582 | /** |
4583 | * e1000e_update_stats - Update the board statistics counters | |
4584 | * @adapter: board private structure | |
4585 | **/ | |
67fd4fcb | 4586 | static void e1000e_update_stats(struct e1000_adapter *adapter) |
bc7f75fa | 4587 | { |
7274c20f | 4588 | struct net_device *netdev = adapter->netdev; |
bc7f75fa AK |
4589 | struct e1000_hw *hw = &adapter->hw; |
4590 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa | 4591 | |
e921eb1a | 4592 | /* Prevent stats update while adapter is being reset, or if the pci |
bc7f75fa AK |
4593 | * connection is down. |
4594 | */ | |
4595 | if (adapter->link_speed == 0) | |
4596 | return; | |
4597 | if (pci_channel_offline(pdev)) | |
4598 | return; | |
4599 | ||
bc7f75fa AK |
4600 | adapter->stats.crcerrs += er32(CRCERRS); |
4601 | adapter->stats.gprc += er32(GPRC); | |
7c25769f | 4602 | adapter->stats.gorc += er32(GORCL); |
e80bd1d1 | 4603 | er32(GORCH); /* Clear gorc */ |
bc7f75fa AK |
4604 | adapter->stats.bprc += er32(BPRC); |
4605 | adapter->stats.mprc += er32(MPRC); | |
4606 | adapter->stats.roc += er32(ROC); | |
4607 | ||
bc7f75fa | 4608 | adapter->stats.mpc += er32(MPC); |
8c7bbb92 BA |
4609 | |
4610 | /* Half-duplex statistics */ | |
4611 | if (adapter->link_duplex == HALF_DUPLEX) { | |
4612 | if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { | |
4613 | e1000e_update_phy_stats(adapter); | |
4614 | } else { | |
4615 | adapter->stats.scc += er32(SCC); | |
4616 | adapter->stats.ecol += er32(ECOL); | |
4617 | adapter->stats.mcc += er32(MCC); | |
4618 | adapter->stats.latecol += er32(LATECOL); | |
4619 | adapter->stats.dc += er32(DC); | |
4620 | ||
4621 | hw->mac.collision_delta = er32(COLC); | |
4622 | ||
4623 | if ((hw->mac.type != e1000_82574) && | |
4624 | (hw->mac.type != e1000_82583)) | |
4625 | adapter->stats.tncrs += er32(TNCRS); | |
4626 | } | |
4627 | adapter->stats.colc += hw->mac.collision_delta; | |
a4f58f54 | 4628 | } |
8c7bbb92 | 4629 | |
bc7f75fa AK |
4630 | adapter->stats.xonrxc += er32(XONRXC); |
4631 | adapter->stats.xontxc += er32(XONTXC); | |
4632 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
4633 | adapter->stats.xofftxc += er32(XOFFTXC); | |
bc7f75fa | 4634 | adapter->stats.gptc += er32(GPTC); |
7c25769f | 4635 | adapter->stats.gotc += er32(GOTCL); |
e80bd1d1 | 4636 | er32(GOTCH); /* Clear gotc */ |
bc7f75fa AK |
4637 | adapter->stats.rnbc += er32(RNBC); |
4638 | adapter->stats.ruc += er32(RUC); | |
bc7f75fa AK |
4639 | |
4640 | adapter->stats.mptc += er32(MPTC); | |
4641 | adapter->stats.bptc += er32(BPTC); | |
4642 | ||
4643 | /* used for adaptive IFS */ | |
4644 | ||
4645 | hw->mac.tx_packet_delta = er32(TPT); | |
4646 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
bc7f75fa AK |
4647 | |
4648 | adapter->stats.algnerrc += er32(ALGNERRC); | |
4649 | adapter->stats.rxerrc += er32(RXERRC); | |
bc7f75fa AK |
4650 | adapter->stats.cexterr += er32(CEXTERR); |
4651 | adapter->stats.tsctc += er32(TSCTC); | |
4652 | adapter->stats.tsctfc += er32(TSCTFC); | |
4653 | ||
bc7f75fa | 4654 | /* Fill out the OS statistics structure */ |
7274c20f AK |
4655 | netdev->stats.multicast = adapter->stats.mprc; |
4656 | netdev->stats.collisions = adapter->stats.colc; | |
bc7f75fa AK |
4657 | |
4658 | /* Rx Errors */ | |
4659 | ||
e921eb1a | 4660 | /* RLEC on some newer hardware can be incorrect so build |
ad68076e BA |
4661 | * our own version based on RUC and ROC |
4662 | */ | |
7274c20f | 4663 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
f0ff4398 BA |
4664 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
4665 | adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr; | |
7274c20f | 4666 | netdev->stats.rx_length_errors = adapter->stats.ruc + |
f0ff4398 | 4667 | adapter->stats.roc; |
7274c20f AK |
4668 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
4669 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
4670 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
bc7f75fa AK |
4671 | |
4672 | /* Tx Errors */ | |
f0ff4398 | 4673 | netdev->stats.tx_errors = adapter->stats.ecol + adapter->stats.latecol; |
7274c20f AK |
4674 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
4675 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
4676 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
bc7f75fa AK |
4677 | |
4678 | /* Tx Dropped needs to be maintained elsewhere */ | |
4679 | ||
bc7f75fa AK |
4680 | /* Management Stats */ |
4681 | adapter->stats.mgptc += er32(MGTPTC); | |
4682 | adapter->stats.mgprc += er32(MGTPRC); | |
4683 | adapter->stats.mgpdc += er32(MGTPDC); | |
94fb848b BA |
4684 | |
4685 | /* Correctable ECC Errors */ | |
4686 | if (hw->mac.type == e1000_pch_lpt) { | |
4687 | u32 pbeccsts = er32(PBECCSTS); | |
4688 | adapter->corr_errors += | |
4689 | pbeccsts & E1000_PBECCSTS_CORR_ERR_CNT_MASK; | |
4690 | adapter->uncorr_errors += | |
4691 | (pbeccsts & E1000_PBECCSTS_UNCORR_ERR_CNT_MASK) >> | |
4692 | E1000_PBECCSTS_UNCORR_ERR_CNT_SHIFT; | |
4693 | } | |
bc7f75fa AK |
4694 | } |
4695 | ||
7c25769f BA |
4696 | /** |
4697 | * e1000_phy_read_status - Update the PHY register status snapshot | |
4698 | * @adapter: board private structure | |
4699 | **/ | |
4700 | static void e1000_phy_read_status(struct e1000_adapter *adapter) | |
4701 | { | |
4702 | struct e1000_hw *hw = &adapter->hw; | |
4703 | struct e1000_phy_regs *phy = &adapter->phy_regs; | |
7c25769f | 4704 | |
97390ab8 BA |
4705 | if (!pm_runtime_suspended((&adapter->pdev->dev)->parent) && |
4706 | (er32(STATUS) & E1000_STATUS_LU) && | |
7c25769f | 4707 | (adapter->hw.phy.media_type == e1000_media_type_copper)) { |
90da0669 BA |
4708 | int ret_val; |
4709 | ||
c2ade1a4 BA |
4710 | ret_val = e1e_rphy(hw, MII_BMCR, &phy->bmcr); |
4711 | ret_val |= e1e_rphy(hw, MII_BMSR, &phy->bmsr); | |
4712 | ret_val |= e1e_rphy(hw, MII_ADVERTISE, &phy->advertise); | |
4713 | ret_val |= e1e_rphy(hw, MII_LPA, &phy->lpa); | |
4714 | ret_val |= e1e_rphy(hw, MII_EXPANSION, &phy->expansion); | |
4715 | ret_val |= e1e_rphy(hw, MII_CTRL1000, &phy->ctrl1000); | |
4716 | ret_val |= e1e_rphy(hw, MII_STAT1000, &phy->stat1000); | |
4717 | ret_val |= e1e_rphy(hw, MII_ESTATUS, &phy->estatus); | |
7c25769f | 4718 | if (ret_val) |
44defeb3 | 4719 | e_warn("Error reading PHY register\n"); |
7c25769f | 4720 | } else { |
e921eb1a | 4721 | /* Do not read PHY registers if link is not up |
7c25769f BA |
4722 | * Set values to typical power-on defaults |
4723 | */ | |
4724 | phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); | |
4725 | phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | | |
4726 | BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | | |
4727 | BMSR_ERCAP); | |
4728 | phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | | |
4729 | ADVERTISE_ALL | ADVERTISE_CSMA); | |
4730 | phy->lpa = 0; | |
4731 | phy->expansion = EXPANSION_ENABLENPAGE; | |
4732 | phy->ctrl1000 = ADVERTISE_1000FULL; | |
4733 | phy->stat1000 = 0; | |
4734 | phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); | |
4735 | } | |
7c25769f BA |
4736 | } |
4737 | ||
bc7f75fa AK |
4738 | static void e1000_print_link_info(struct e1000_adapter *adapter) |
4739 | { | |
bc7f75fa AK |
4740 | struct e1000_hw *hw = &adapter->hw; |
4741 | u32 ctrl = er32(CTRL); | |
4742 | ||
8f12fe86 | 4743 | /* Link status message must follow this format for user tools */ |
7dbc1672 BA |
4744 | pr_info("%s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", |
4745 | adapter->netdev->name, adapter->link_speed, | |
ef456f85 JK |
4746 | adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half", |
4747 | (ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE) ? "Rx/Tx" : | |
4748 | (ctrl & E1000_CTRL_RFCE) ? "Rx" : | |
4749 | (ctrl & E1000_CTRL_TFCE) ? "Tx" : "None"); | |
bc7f75fa AK |
4750 | } |
4751 | ||
0c6bdb30 | 4752 | static bool e1000e_has_link(struct e1000_adapter *adapter) |
318a94d6 JK |
4753 | { |
4754 | struct e1000_hw *hw = &adapter->hw; | |
3db1cd5c | 4755 | bool link_active = false; |
318a94d6 JK |
4756 | s32 ret_val = 0; |
4757 | ||
e921eb1a | 4758 | /* get_link_status is set on LSC (link status) interrupt or |
318a94d6 JK |
4759 | * Rx sequence error interrupt. get_link_status will stay |
4760 | * false until the check_for_link establishes link | |
4761 | * for copper adapters ONLY | |
4762 | */ | |
4763 | switch (hw->phy.media_type) { | |
4764 | case e1000_media_type_copper: | |
4765 | if (hw->mac.get_link_status) { | |
4766 | ret_val = hw->mac.ops.check_for_link(hw); | |
4767 | link_active = !hw->mac.get_link_status; | |
4768 | } else { | |
3db1cd5c | 4769 | link_active = true; |
318a94d6 JK |
4770 | } |
4771 | break; | |
4772 | case e1000_media_type_fiber: | |
4773 | ret_val = hw->mac.ops.check_for_link(hw); | |
4774 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); | |
4775 | break; | |
4776 | case e1000_media_type_internal_serdes: | |
4777 | ret_val = hw->mac.ops.check_for_link(hw); | |
4778 | link_active = adapter->hw.mac.serdes_has_link; | |
4779 | break; | |
4780 | default: | |
4781 | case e1000_media_type_unknown: | |
4782 | break; | |
4783 | } | |
4784 | ||
4785 | if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && | |
4786 | (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
4787 | /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ | |
44defeb3 | 4788 | e_info("Gigabit has been disabled, downgrading speed\n"); |
318a94d6 JK |
4789 | } |
4790 | ||
4791 | return link_active; | |
4792 | } | |
4793 | ||
4794 | static void e1000e_enable_receives(struct e1000_adapter *adapter) | |
4795 | { | |
4796 | /* make sure the receive unit is started */ | |
4797 | if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && | |
12d43f7d | 4798 | (adapter->flags & FLAG_RESTART_NOW)) { |
318a94d6 JK |
4799 | struct e1000_hw *hw = &adapter->hw; |
4800 | u32 rctl = er32(RCTL); | |
4801 | ew32(RCTL, rctl | E1000_RCTL_EN); | |
12d43f7d | 4802 | adapter->flags &= ~FLAG_RESTART_NOW; |
318a94d6 JK |
4803 | } |
4804 | } | |
4805 | ||
ff10e13c CW |
4806 | static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter) |
4807 | { | |
4808 | struct e1000_hw *hw = &adapter->hw; | |
4809 | ||
e921eb1a | 4810 | /* With 82574 controllers, PHY needs to be checked periodically |
ff10e13c CW |
4811 | * for hung state and reset, if two calls return true |
4812 | */ | |
4813 | if (e1000_check_phy_82574(hw)) | |
4814 | adapter->phy_hang_count++; | |
4815 | else | |
4816 | adapter->phy_hang_count = 0; | |
4817 | ||
4818 | if (adapter->phy_hang_count > 1) { | |
4819 | adapter->phy_hang_count = 0; | |
d9554e96 | 4820 | e_dbg("PHY appears hung - resetting\n"); |
ff10e13c CW |
4821 | schedule_work(&adapter->reset_task); |
4822 | } | |
4823 | } | |
4824 | ||
bc7f75fa AK |
4825 | /** |
4826 | * e1000_watchdog - Timer Call-back | |
4827 | * @data: pointer to adapter cast into an unsigned long | |
4828 | **/ | |
4829 | static void e1000_watchdog(unsigned long data) | |
4830 | { | |
53aa82da | 4831 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
bc7f75fa AK |
4832 | |
4833 | /* Do the rest outside of interrupt context */ | |
4834 | schedule_work(&adapter->watchdog_task); | |
4835 | ||
4836 | /* TODO: make this use queue_delayed_work() */ | |
4837 | } | |
4838 | ||
4839 | static void e1000_watchdog_task(struct work_struct *work) | |
4840 | { | |
4841 | struct e1000_adapter *adapter = container_of(work, | |
17e813ec BA |
4842 | struct e1000_adapter, |
4843 | watchdog_task); | |
bc7f75fa AK |
4844 | struct net_device *netdev = adapter->netdev; |
4845 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
75eb0fad | 4846 | struct e1000_phy_info *phy = &adapter->hw.phy; |
bc7f75fa AK |
4847 | struct e1000_ring *tx_ring = adapter->tx_ring; |
4848 | struct e1000_hw *hw = &adapter->hw; | |
4849 | u32 link, tctl; | |
bc7f75fa | 4850 | |
615b32af JB |
4851 | if (test_bit(__E1000_DOWN, &adapter->state)) |
4852 | return; | |
4853 | ||
b405e8df | 4854 | link = e1000e_has_link(adapter); |
318a94d6 | 4855 | if ((netif_carrier_ok(netdev)) && link) { |
23606cf5 RW |
4856 | /* Cancel scheduled suspend requests. */ |
4857 | pm_runtime_resume(netdev->dev.parent); | |
4858 | ||
318a94d6 | 4859 | e1000e_enable_receives(adapter); |
bc7f75fa | 4860 | goto link_up; |
bc7f75fa AK |
4861 | } |
4862 | ||
4863 | if ((e1000e_enable_tx_pkt_filtering(hw)) && | |
4864 | (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) | |
4865 | e1000_update_mng_vlan(adapter); | |
4866 | ||
bc7f75fa AK |
4867 | if (link) { |
4868 | if (!netif_carrier_ok(netdev)) { | |
3db1cd5c | 4869 | bool txb2b = true; |
23606cf5 RW |
4870 | |
4871 | /* Cancel scheduled suspend requests. */ | |
4872 | pm_runtime_resume(netdev->dev.parent); | |
4873 | ||
318a94d6 | 4874 | /* update snapshot of PHY registers on LSC */ |
7c25769f | 4875 | e1000_phy_read_status(adapter); |
bc7f75fa | 4876 | mac->ops.get_link_up_info(&adapter->hw, |
17e813ec BA |
4877 | &adapter->link_speed, |
4878 | &adapter->link_duplex); | |
bc7f75fa | 4879 | e1000_print_link_info(adapter); |
e792cd91 KS |
4880 | |
4881 | /* check if SmartSpeed worked */ | |
4882 | e1000e_check_downshift(hw); | |
4883 | if (phy->speed_downgraded) | |
4884 | netdev_warn(netdev, | |
4885 | "Link Speed was downgraded by SmartSpeed\n"); | |
4886 | ||
e921eb1a | 4887 | /* On supported PHYs, check for duplex mismatch only |
f4187b56 BA |
4888 | * if link has autonegotiated at 10/100 half |
4889 | */ | |
4890 | if ((hw->phy.type == e1000_phy_igp_3 || | |
4891 | hw->phy.type == e1000_phy_bm) && | |
138953bb | 4892 | hw->mac.autoneg && |
f4187b56 BA |
4893 | (adapter->link_speed == SPEED_10 || |
4894 | adapter->link_speed == SPEED_100) && | |
4895 | (adapter->link_duplex == HALF_DUPLEX)) { | |
4896 | u16 autoneg_exp; | |
4897 | ||
c2ade1a4 | 4898 | e1e_rphy(hw, MII_EXPANSION, &autoneg_exp); |
f4187b56 | 4899 | |
c2ade1a4 | 4900 | if (!(autoneg_exp & EXPANSION_NWAY)) |
ef456f85 | 4901 | e_info("Autonegotiated half duplex but link partner cannot autoneg. Try forcing full duplex if link gets many collisions.\n"); |
f4187b56 BA |
4902 | } |
4903 | ||
f49c57e1 | 4904 | /* adjust timeout factor according to speed/duplex */ |
bc7f75fa AK |
4905 | adapter->tx_timeout_factor = 1; |
4906 | switch (adapter->link_speed) { | |
4907 | case SPEED_10: | |
3db1cd5c | 4908 | txb2b = false; |
10f1b492 | 4909 | adapter->tx_timeout_factor = 16; |
bc7f75fa AK |
4910 | break; |
4911 | case SPEED_100: | |
3db1cd5c | 4912 | txb2b = false; |
4c86e0b9 | 4913 | adapter->tx_timeout_factor = 10; |
bc7f75fa AK |
4914 | break; |
4915 | } | |
4916 | ||
e921eb1a | 4917 | /* workaround: re-program speed mode bit after |
ad68076e BA |
4918 | * link-up event |
4919 | */ | |
bc7f75fa AK |
4920 | if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
4921 | !txb2b) { | |
4922 | u32 tarc0; | |
e9ec2c0f | 4923 | tarc0 = er32(TARC(0)); |
bc7f75fa | 4924 | tarc0 &= ~SPEED_MODE_BIT; |
e9ec2c0f | 4925 | ew32(TARC(0), tarc0); |
bc7f75fa AK |
4926 | } |
4927 | ||
e921eb1a | 4928 | /* disable TSO for pcie and 10/100 speeds, to avoid |
ad68076e BA |
4929 | * some hardware issues |
4930 | */ | |
bc7f75fa AK |
4931 | if (!(adapter->flags & FLAG_TSO_FORCE)) { |
4932 | switch (adapter->link_speed) { | |
4933 | case SPEED_10: | |
4934 | case SPEED_100: | |
44defeb3 | 4935 | e_info("10/100 speed: disabling TSO\n"); |
bc7f75fa AK |
4936 | netdev->features &= ~NETIF_F_TSO; |
4937 | netdev->features &= ~NETIF_F_TSO6; | |
4938 | break; | |
4939 | case SPEED_1000: | |
4940 | netdev->features |= NETIF_F_TSO; | |
4941 | netdev->features |= NETIF_F_TSO6; | |
4942 | break; | |
4943 | default: | |
4944 | /* oops */ | |
4945 | break; | |
4946 | } | |
4947 | } | |
4948 | ||
e921eb1a | 4949 | /* enable transmits in the hardware, need to do this |
ad68076e BA |
4950 | * after setting TARC(0) |
4951 | */ | |
bc7f75fa AK |
4952 | tctl = er32(TCTL); |
4953 | tctl |= E1000_TCTL_EN; | |
4954 | ew32(TCTL, tctl); | |
4955 | ||
e921eb1a | 4956 | /* Perform any post-link-up configuration before |
75eb0fad BA |
4957 | * reporting link up. |
4958 | */ | |
4959 | if (phy->ops.cfg_on_link_up) | |
4960 | phy->ops.cfg_on_link_up(hw); | |
4961 | ||
bc7f75fa | 4962 | netif_carrier_on(netdev); |
bc7f75fa AK |
4963 | |
4964 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
4965 | mod_timer(&adapter->phy_info_timer, | |
4966 | round_jiffies(jiffies + 2 * HZ)); | |
bc7f75fa AK |
4967 | } |
4968 | } else { | |
4969 | if (netif_carrier_ok(netdev)) { | |
4970 | adapter->link_speed = 0; | |
4971 | adapter->link_duplex = 0; | |
8f12fe86 | 4972 | /* Link status message must follow this format */ |
7dbc1672 | 4973 | pr_info("%s NIC Link is Down\n", adapter->netdev->name); |
bc7f75fa | 4974 | netif_carrier_off(netdev); |
bc7f75fa AK |
4975 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
4976 | mod_timer(&adapter->phy_info_timer, | |
4977 | round_jiffies(jiffies + 2 * HZ)); | |
4978 | ||
d9554e96 DE |
4979 | /* 8000ES2LAN requires a Rx packet buffer work-around |
4980 | * on link down event; reset the controller to flush | |
4981 | * the Rx packet buffer. | |
12d43f7d | 4982 | */ |
d9554e96 | 4983 | if (adapter->flags & FLAG_RX_NEEDS_RESTART) |
12d43f7d | 4984 | adapter->flags |= FLAG_RESTART_NOW; |
23606cf5 RW |
4985 | else |
4986 | pm_schedule_suspend(netdev->dev.parent, | |
17e813ec | 4987 | LINK_TIMEOUT); |
bc7f75fa AK |
4988 | } |
4989 | } | |
4990 | ||
4991 | link_up: | |
67fd4fcb | 4992 | spin_lock(&adapter->stats64_lock); |
bc7f75fa AK |
4993 | e1000e_update_stats(adapter); |
4994 | ||
4995 | mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
4996 | adapter->tpt_old = adapter->stats.tpt; | |
4997 | mac->collision_delta = adapter->stats.colc - adapter->colc_old; | |
4998 | adapter->colc_old = adapter->stats.colc; | |
4999 | ||
7c25769f BA |
5000 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
5001 | adapter->gorc_old = adapter->stats.gorc; | |
5002 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; | |
5003 | adapter->gotc_old = adapter->stats.gotc; | |
2084b114 | 5004 | spin_unlock(&adapter->stats64_lock); |
bc7f75fa | 5005 | |
d9554e96 DE |
5006 | /* If the link is lost the controller stops DMA, but |
5007 | * if there is queued Tx work it cannot be done. So | |
5008 | * reset the controller to flush the Tx packet buffers. | |
5009 | */ | |
5010 | if (!netif_carrier_ok(netdev) && | |
5011 | (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) | |
5012 | adapter->flags |= FLAG_RESTART_NOW; | |
5013 | ||
5014 | /* If reset is necessary, do it outside of interrupt context. */ | |
12d43f7d | 5015 | if (adapter->flags & FLAG_RESTART_NOW) { |
90da0669 BA |
5016 | schedule_work(&adapter->reset_task); |
5017 | /* return immediately since reset is imminent */ | |
5018 | return; | |
bc7f75fa AK |
5019 | } |
5020 | ||
12d43f7d BA |
5021 | e1000e_update_adaptive(&adapter->hw); |
5022 | ||
eab2abf5 JB |
5023 | /* Simple mode for Interrupt Throttle Rate (ITR) */ |
5024 | if (adapter->itr_setting == 4) { | |
e921eb1a | 5025 | /* Symmetric Tx/Rx gets a reduced ITR=2000; |
eab2abf5 JB |
5026 | * Total asymmetrical Tx or Rx gets ITR=8000; |
5027 | * everyone else is between 2000-8000. | |
5028 | */ | |
5029 | u32 goc = (adapter->gotc + adapter->gorc) / 10000; | |
5030 | u32 dif = (adapter->gotc > adapter->gorc ? | |
17e813ec BA |
5031 | adapter->gotc - adapter->gorc : |
5032 | adapter->gorc - adapter->gotc) / 10000; | |
eab2abf5 JB |
5033 | u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; |
5034 | ||
22a4cca2 | 5035 | e1000e_write_itr(adapter, itr); |
eab2abf5 JB |
5036 | } |
5037 | ||
ad68076e | 5038 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
4662e82b BA |
5039 | if (adapter->msix_entries) |
5040 | ew32(ICS, adapter->rx_ring->ims_val); | |
5041 | else | |
5042 | ew32(ICS, E1000_ICS_RXDMT0); | |
bc7f75fa | 5043 | |
713b3c9e JB |
5044 | /* flush pending descriptors to memory before detecting Tx hang */ |
5045 | e1000e_flush_descriptors(adapter); | |
5046 | ||
bc7f75fa | 5047 | /* Force detection of hung controller every watchdog period */ |
3db1cd5c | 5048 | adapter->detect_tx_hung = true; |
bc7f75fa | 5049 | |
e921eb1a | 5050 | /* With 82571 controllers, LAA may be overwritten due to controller |
ad68076e BA |
5051 | * reset from the other port. Set the appropriate LAA in RAR[0] |
5052 | */ | |
bc7f75fa | 5053 | if (e1000e_get_laa_state_82571(hw)) |
69e1e019 | 5054 | hw->mac.ops.rar_set(hw, adapter->hw.mac.addr, 0); |
bc7f75fa | 5055 | |
ff10e13c CW |
5056 | if (adapter->flags2 & FLAG2_CHECK_PHY_HANG) |
5057 | e1000e_check_82574_phy_workaround(adapter); | |
5058 | ||
b67e1913 BA |
5059 | /* Clear valid timestamp stuck in RXSTMPL/H due to a Rx error */ |
5060 | if (adapter->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE) { | |
5061 | if ((adapter->flags2 & FLAG2_CHECK_RX_HWTSTAMP) && | |
5062 | (er32(TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) { | |
5063 | er32(RXSTMPH); | |
5064 | adapter->rx_hwtstamp_cleared++; | |
5065 | } else { | |
5066 | adapter->flags2 |= FLAG2_CHECK_RX_HWTSTAMP; | |
5067 | } | |
5068 | } | |
5069 | ||
bc7f75fa AK |
5070 | /* Reset the timer */ |
5071 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
5072 | mod_timer(&adapter->watchdog_timer, | |
5073 | round_jiffies(jiffies + 2 * HZ)); | |
5074 | } | |
5075 | ||
5076 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
5077 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
5078 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
5079 | #define E1000_TX_FLAGS_IPV4 0x00000008 | |
943146de | 5080 | #define E1000_TX_FLAGS_NO_FCS 0x00000010 |
b67e1913 | 5081 | #define E1000_TX_FLAGS_HWTSTAMP 0x00000020 |
bc7f75fa AK |
5082 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
5083 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
5084 | ||
55aa6985 | 5085 | static int e1000_tso(struct e1000_ring *tx_ring, struct sk_buff *skb) |
bc7f75fa | 5086 | { |
bc7f75fa AK |
5087 | struct e1000_context_desc *context_desc; |
5088 | struct e1000_buffer *buffer_info; | |
5089 | unsigned int i; | |
5090 | u32 cmd_length = 0; | |
70443ae9 | 5091 | u16 ipcse = 0, mss; |
bc7f75fa | 5092 | u8 ipcss, ipcso, tucss, tucso, hdr_len; |
bc7f75fa | 5093 | |
3d5e33c9 BA |
5094 | if (!skb_is_gso(skb)) |
5095 | return 0; | |
bc7f75fa | 5096 | |
3d5e33c9 | 5097 | if (skb_header_cloned(skb)) { |
90da0669 BA |
5098 | int err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); |
5099 | ||
3d5e33c9 BA |
5100 | if (err) |
5101 | return err; | |
bc7f75fa AK |
5102 | } |
5103 | ||
3d5e33c9 BA |
5104 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
5105 | mss = skb_shinfo(skb)->gso_size; | |
5106 | if (skb->protocol == htons(ETH_P_IP)) { | |
5107 | struct iphdr *iph = ip_hdr(skb); | |
5108 | iph->tot_len = 0; | |
5109 | iph->check = 0; | |
5110 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, | |
f0ff4398 | 5111 | 0, IPPROTO_TCP, 0); |
3d5e33c9 BA |
5112 | cmd_length = E1000_TXD_CMD_IP; |
5113 | ipcse = skb_transport_offset(skb) - 1; | |
8e1e8a47 | 5114 | } else if (skb_is_gso_v6(skb)) { |
3d5e33c9 BA |
5115 | ipv6_hdr(skb)->payload_len = 0; |
5116 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
f0ff4398 BA |
5117 | &ipv6_hdr(skb)->daddr, |
5118 | 0, IPPROTO_TCP, 0); | |
3d5e33c9 BA |
5119 | ipcse = 0; |
5120 | } | |
5121 | ipcss = skb_network_offset(skb); | |
5122 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; | |
5123 | tucss = skb_transport_offset(skb); | |
5124 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; | |
3d5e33c9 BA |
5125 | |
5126 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
f0ff4398 | 5127 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
3d5e33c9 BA |
5128 | |
5129 | i = tx_ring->next_to_use; | |
5130 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
5131 | buffer_info = &tx_ring->buffer_info[i]; | |
5132 | ||
e80bd1d1 BA |
5133 | context_desc->lower_setup.ip_fields.ipcss = ipcss; |
5134 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
5135 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
3d5e33c9 BA |
5136 | context_desc->upper_setup.tcp_fields.tucss = tucss; |
5137 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
70443ae9 | 5138 | context_desc->upper_setup.tcp_fields.tucse = 0; |
e80bd1d1 | 5139 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); |
3d5e33c9 BA |
5140 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; |
5141 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
5142 | ||
5143 | buffer_info->time_stamp = jiffies; | |
5144 | buffer_info->next_to_watch = i; | |
5145 | ||
5146 | i++; | |
5147 | if (i == tx_ring->count) | |
5148 | i = 0; | |
5149 | tx_ring->next_to_use = i; | |
5150 | ||
5151 | return 1; | |
bc7f75fa AK |
5152 | } |
5153 | ||
55aa6985 | 5154 | static bool e1000_tx_csum(struct e1000_ring *tx_ring, struct sk_buff *skb) |
bc7f75fa | 5155 | { |
55aa6985 | 5156 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
5157 | struct e1000_context_desc *context_desc; |
5158 | struct e1000_buffer *buffer_info; | |
5159 | unsigned int i; | |
5160 | u8 css; | |
af807c82 | 5161 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
5f66f208 | 5162 | __be16 protocol; |
bc7f75fa | 5163 | |
af807c82 DG |
5164 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
5165 | return 0; | |
bc7f75fa | 5166 | |
5f66f208 AJ |
5167 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
5168 | protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; | |
5169 | else | |
5170 | protocol = skb->protocol; | |
5171 | ||
3f518390 | 5172 | switch (protocol) { |
09640e63 | 5173 | case cpu_to_be16(ETH_P_IP): |
af807c82 DG |
5174 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
5175 | cmd_len |= E1000_TXD_CMD_TCP; | |
5176 | break; | |
09640e63 | 5177 | case cpu_to_be16(ETH_P_IPV6): |
af807c82 DG |
5178 | /* XXX not handling all IPV6 headers */ |
5179 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
5180 | cmd_len |= E1000_TXD_CMD_TCP; | |
5181 | break; | |
5182 | default: | |
5183 | if (unlikely(net_ratelimit())) | |
5f66f208 AJ |
5184 | e_warn("checksum_partial proto=%x!\n", |
5185 | be16_to_cpu(protocol)); | |
af807c82 | 5186 | break; |
bc7f75fa AK |
5187 | } |
5188 | ||
0d0b1672 | 5189 | css = skb_checksum_start_offset(skb); |
af807c82 DG |
5190 | |
5191 | i = tx_ring->next_to_use; | |
5192 | buffer_info = &tx_ring->buffer_info[i]; | |
5193 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
5194 | ||
5195 | context_desc->lower_setup.ip_config = 0; | |
5196 | context_desc->upper_setup.tcp_fields.tucss = css; | |
f0ff4398 | 5197 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum_offset; |
af807c82 DG |
5198 | context_desc->upper_setup.tcp_fields.tucse = 0; |
5199 | context_desc->tcp_seg_setup.data = 0; | |
5200 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
5201 | ||
5202 | buffer_info->time_stamp = jiffies; | |
5203 | buffer_info->next_to_watch = i; | |
5204 | ||
5205 | i++; | |
5206 | if (i == tx_ring->count) | |
5207 | i = 0; | |
5208 | tx_ring->next_to_use = i; | |
5209 | ||
5210 | return 1; | |
bc7f75fa AK |
5211 | } |
5212 | ||
55aa6985 BA |
5213 | static int e1000_tx_map(struct e1000_ring *tx_ring, struct sk_buff *skb, |
5214 | unsigned int first, unsigned int max_per_txd, | |
d821a4c4 | 5215 | unsigned int nr_frags) |
bc7f75fa | 5216 | { |
55aa6985 | 5217 | struct e1000_adapter *adapter = tx_ring->adapter; |
03b1320d | 5218 | struct pci_dev *pdev = adapter->pdev; |
1b7719c4 | 5219 | struct e1000_buffer *buffer_info; |
8ddc951c | 5220 | unsigned int len = skb_headlen(skb); |
03b1320d | 5221 | unsigned int offset = 0, size, count = 0, i; |
9ed318d5 | 5222 | unsigned int f, bytecount, segs; |
bc7f75fa AK |
5223 | |
5224 | i = tx_ring->next_to_use; | |
5225 | ||
5226 | while (len) { | |
1b7719c4 | 5227 | buffer_info = &tx_ring->buffer_info[i]; |
bc7f75fa AK |
5228 | size = min(len, max_per_txd); |
5229 | ||
bc7f75fa | 5230 | buffer_info->length = size; |
bc7f75fa | 5231 | buffer_info->time_stamp = jiffies; |
bc7f75fa | 5232 | buffer_info->next_to_watch = i; |
0be3f55f NN |
5233 | buffer_info->dma = dma_map_single(&pdev->dev, |
5234 | skb->data + offset, | |
af667a29 | 5235 | size, DMA_TO_DEVICE); |
03b1320d | 5236 | buffer_info->mapped_as_page = false; |
0be3f55f | 5237 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
03b1320d | 5238 | goto dma_error; |
bc7f75fa AK |
5239 | |
5240 | len -= size; | |
5241 | offset += size; | |
03b1320d | 5242 | count++; |
1b7719c4 AD |
5243 | |
5244 | if (len) { | |
5245 | i++; | |
5246 | if (i == tx_ring->count) | |
5247 | i = 0; | |
5248 | } | |
bc7f75fa AK |
5249 | } |
5250 | ||
5251 | for (f = 0; f < nr_frags; f++) { | |
9e903e08 | 5252 | const struct skb_frag_struct *frag; |
bc7f75fa AK |
5253 | |
5254 | frag = &skb_shinfo(skb)->frags[f]; | |
9e903e08 | 5255 | len = skb_frag_size(frag); |
877749bf | 5256 | offset = 0; |
bc7f75fa AK |
5257 | |
5258 | while (len) { | |
1b7719c4 AD |
5259 | i++; |
5260 | if (i == tx_ring->count) | |
5261 | i = 0; | |
5262 | ||
bc7f75fa AK |
5263 | buffer_info = &tx_ring->buffer_info[i]; |
5264 | size = min(len, max_per_txd); | |
bc7f75fa AK |
5265 | |
5266 | buffer_info->length = size; | |
5267 | buffer_info->time_stamp = jiffies; | |
bc7f75fa | 5268 | buffer_info->next_to_watch = i; |
877749bf | 5269 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
17e813ec BA |
5270 | offset, size, |
5271 | DMA_TO_DEVICE); | |
03b1320d | 5272 | buffer_info->mapped_as_page = true; |
0be3f55f | 5273 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
03b1320d | 5274 | goto dma_error; |
bc7f75fa AK |
5275 | |
5276 | len -= size; | |
5277 | offset += size; | |
5278 | count++; | |
bc7f75fa AK |
5279 | } |
5280 | } | |
5281 | ||
af667a29 | 5282 | segs = skb_shinfo(skb)->gso_segs ? : 1; |
9ed318d5 TH |
5283 | /* multiply data chunks by size of headers */ |
5284 | bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; | |
5285 | ||
bc7f75fa | 5286 | tx_ring->buffer_info[i].skb = skb; |
9ed318d5 TH |
5287 | tx_ring->buffer_info[i].segs = segs; |
5288 | tx_ring->buffer_info[i].bytecount = bytecount; | |
bc7f75fa AK |
5289 | tx_ring->buffer_info[first].next_to_watch = i; |
5290 | ||
5291 | return count; | |
03b1320d AD |
5292 | |
5293 | dma_error: | |
af667a29 | 5294 | dev_err(&pdev->dev, "Tx DMA map failed\n"); |
03b1320d | 5295 | buffer_info->dma = 0; |
c1fa347f | 5296 | if (count) |
03b1320d | 5297 | count--; |
c1fa347f RK |
5298 | |
5299 | while (count--) { | |
af667a29 | 5300 | if (i == 0) |
03b1320d | 5301 | i += tx_ring->count; |
c1fa347f | 5302 | i--; |
03b1320d | 5303 | buffer_info = &tx_ring->buffer_info[i]; |
55aa6985 | 5304 | e1000_put_txbuf(tx_ring, buffer_info); |
03b1320d AD |
5305 | } |
5306 | ||
5307 | return 0; | |
bc7f75fa AK |
5308 | } |
5309 | ||
55aa6985 | 5310 | static void e1000_tx_queue(struct e1000_ring *tx_ring, int tx_flags, int count) |
bc7f75fa | 5311 | { |
55aa6985 | 5312 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa AK |
5313 | struct e1000_tx_desc *tx_desc = NULL; |
5314 | struct e1000_buffer *buffer_info; | |
5315 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
5316 | unsigned int i; | |
5317 | ||
5318 | if (tx_flags & E1000_TX_FLAGS_TSO) { | |
5319 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
f0ff4398 | 5320 | E1000_TXD_CMD_TSE; |
bc7f75fa AK |
5321 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
5322 | ||
5323 | if (tx_flags & E1000_TX_FLAGS_IPV4) | |
5324 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
5325 | } | |
5326 | ||
5327 | if (tx_flags & E1000_TX_FLAGS_CSUM) { | |
5328 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
5329 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
5330 | } | |
5331 | ||
5332 | if (tx_flags & E1000_TX_FLAGS_VLAN) { | |
5333 | txd_lower |= E1000_TXD_CMD_VLE; | |
5334 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
5335 | } | |
5336 | ||
943146de BG |
5337 | if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) |
5338 | txd_lower &= ~(E1000_TXD_CMD_IFCS); | |
5339 | ||
b67e1913 BA |
5340 | if (unlikely(tx_flags & E1000_TX_FLAGS_HWTSTAMP)) { |
5341 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
5342 | txd_upper |= E1000_TXD_EXTCMD_TSTAMP; | |
5343 | } | |
5344 | ||
bc7f75fa AK |
5345 | i = tx_ring->next_to_use; |
5346 | ||
36b973df | 5347 | do { |
bc7f75fa AK |
5348 | buffer_info = &tx_ring->buffer_info[i]; |
5349 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
5350 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
f0ff4398 BA |
5351 | tx_desc->lower.data = cpu_to_le32(txd_lower | |
5352 | buffer_info->length); | |
bc7f75fa AK |
5353 | tx_desc->upper.data = cpu_to_le32(txd_upper); |
5354 | ||
5355 | i++; | |
5356 | if (i == tx_ring->count) | |
5357 | i = 0; | |
36b973df | 5358 | } while (--count > 0); |
bc7f75fa AK |
5359 | |
5360 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
5361 | ||
943146de BG |
5362 | /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */ |
5363 | if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) | |
5364 | tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS)); | |
5365 | ||
e921eb1a | 5366 | /* Force memory writes to complete before letting h/w |
bc7f75fa AK |
5367 | * know there are new descriptors to fetch. (Only |
5368 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
5369 | * such as IA-64). |
5370 | */ | |
bc7f75fa AK |
5371 | wmb(); |
5372 | ||
5373 | tx_ring->next_to_use = i; | |
c6e7f51e BA |
5374 | |
5375 | if (adapter->flags2 & FLAG2_PCIM2PCI_ARBITER_WA) | |
55aa6985 | 5376 | e1000e_update_tdt_wa(tx_ring, i); |
c6e7f51e | 5377 | else |
c5083cf6 | 5378 | writel(i, tx_ring->tail); |
c6e7f51e | 5379 | |
e921eb1a | 5380 | /* we need this if more than one processor can write to our tail |
ad68076e BA |
5381 | * at a time, it synchronizes IO on IA64/Altix systems |
5382 | */ | |
bc7f75fa AK |
5383 | mmiowb(); |
5384 | } | |
5385 | ||
5386 | #define MINIMUM_DHCP_PACKET_SIZE 282 | |
5387 | static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, | |
5388 | struct sk_buff *skb) | |
5389 | { | |
e80bd1d1 | 5390 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
5391 | u16 length, offset; |
5392 | ||
d60923c4 BA |
5393 | if (vlan_tx_tag_present(skb) && |
5394 | !((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
5395 | (adapter->hw.mng_cookie.status & | |
5396 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) | |
5397 | return 0; | |
bc7f75fa AK |
5398 | |
5399 | if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) | |
5400 | return 0; | |
5401 | ||
53aa82da | 5402 | if (((struct ethhdr *)skb->data)->h_proto != htons(ETH_P_IP)) |
bc7f75fa AK |
5403 | return 0; |
5404 | ||
5405 | { | |
362e20ca | 5406 | const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data + 14); |
bc7f75fa AK |
5407 | struct udphdr *udp; |
5408 | ||
5409 | if (ip->protocol != IPPROTO_UDP) | |
5410 | return 0; | |
5411 | ||
5412 | udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); | |
5413 | if (ntohs(udp->dest) != 67) | |
5414 | return 0; | |
5415 | ||
5416 | offset = (u8 *)udp + 8 - skb->data; | |
5417 | length = skb->len - offset; | |
5418 | return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); | |
5419 | } | |
5420 | ||
5421 | return 0; | |
5422 | } | |
5423 | ||
55aa6985 | 5424 | static int __e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
bc7f75fa | 5425 | { |
55aa6985 | 5426 | struct e1000_adapter *adapter = tx_ring->adapter; |
bc7f75fa | 5427 | |
55aa6985 | 5428 | netif_stop_queue(adapter->netdev); |
e921eb1a | 5429 | /* Herbert's original patch had: |
bc7f75fa | 5430 | * smp_mb__after_netif_stop_queue(); |
ad68076e BA |
5431 | * but since that doesn't exist yet, just open code it. |
5432 | */ | |
bc7f75fa AK |
5433 | smp_mb(); |
5434 | ||
e921eb1a | 5435 | /* We need to check again in a case another CPU has just |
ad68076e BA |
5436 | * made room available. |
5437 | */ | |
55aa6985 | 5438 | if (e1000_desc_unused(tx_ring) < size) |
bc7f75fa AK |
5439 | return -EBUSY; |
5440 | ||
5441 | /* A reprieve! */ | |
55aa6985 | 5442 | netif_start_queue(adapter->netdev); |
bc7f75fa AK |
5443 | ++adapter->restart_queue; |
5444 | return 0; | |
5445 | } | |
5446 | ||
55aa6985 | 5447 | static int e1000_maybe_stop_tx(struct e1000_ring *tx_ring, int size) |
bc7f75fa | 5448 | { |
d821a4c4 BA |
5449 | BUG_ON(size > tx_ring->count); |
5450 | ||
55aa6985 | 5451 | if (e1000_desc_unused(tx_ring) >= size) |
bc7f75fa | 5452 | return 0; |
55aa6985 | 5453 | return __e1000_maybe_stop_tx(tx_ring, size); |
bc7f75fa AK |
5454 | } |
5455 | ||
3b29a56d SH |
5456 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
5457 | struct net_device *netdev) | |
bc7f75fa AK |
5458 | { |
5459 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5460 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
5461 | unsigned int first; | |
bc7f75fa | 5462 | unsigned int tx_flags = 0; |
e743d313 | 5463 | unsigned int len = skb_headlen(skb); |
4e6c709c AK |
5464 | unsigned int nr_frags; |
5465 | unsigned int mss; | |
bc7f75fa AK |
5466 | int count = 0; |
5467 | int tso; | |
5468 | unsigned int f; | |
bc7f75fa AK |
5469 | |
5470 | if (test_bit(__E1000_DOWN, &adapter->state)) { | |
5471 | dev_kfree_skb_any(skb); | |
5472 | return NETDEV_TX_OK; | |
5473 | } | |
5474 | ||
5475 | if (skb->len <= 0) { | |
5476 | dev_kfree_skb_any(skb); | |
5477 | return NETDEV_TX_OK; | |
5478 | } | |
5479 | ||
e921eb1a | 5480 | /* The minimum packet size with TCTL.PSP set is 17 bytes so |
6e97c170 TD |
5481 | * pad skb in order to meet this minimum size requirement |
5482 | */ | |
5483 | if (unlikely(skb->len < 17)) { | |
5484 | if (skb_pad(skb, 17 - skb->len)) | |
5485 | return NETDEV_TX_OK; | |
5486 | skb->len = 17; | |
5487 | skb_set_tail_pointer(skb, 17); | |
5488 | } | |
5489 | ||
bc7f75fa | 5490 | mss = skb_shinfo(skb)->gso_size; |
bc7f75fa AK |
5491 | if (mss) { |
5492 | u8 hdr_len; | |
bc7f75fa | 5493 | |
e921eb1a | 5494 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
ad68076e BA |
5495 | * points to just header, pull a few bytes of payload from |
5496 | * frags into skb->data | |
5497 | */ | |
bc7f75fa | 5498 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
e921eb1a | 5499 | /* we do this workaround for ES2LAN, but it is un-necessary, |
ad68076e BA |
5500 | * avoiding it could save a lot of cycles |
5501 | */ | |
4e6c709c | 5502 | if (skb->data_len && (hdr_len == len)) { |
bc7f75fa AK |
5503 | unsigned int pull_size; |
5504 | ||
a2a5b323 | 5505 | pull_size = min_t(unsigned int, 4, skb->data_len); |
bc7f75fa | 5506 | if (!__pskb_pull_tail(skb, pull_size)) { |
44defeb3 | 5507 | e_err("__pskb_pull_tail failed.\n"); |
bc7f75fa AK |
5508 | dev_kfree_skb_any(skb); |
5509 | return NETDEV_TX_OK; | |
5510 | } | |
e743d313 | 5511 | len = skb_headlen(skb); |
bc7f75fa AK |
5512 | } |
5513 | } | |
5514 | ||
5515 | /* reserve a descriptor for the offload context */ | |
5516 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) | |
5517 | count++; | |
5518 | count++; | |
5519 | ||
d821a4c4 | 5520 | count += DIV_ROUND_UP(len, adapter->tx_fifo_limit); |
bc7f75fa AK |
5521 | |
5522 | nr_frags = skb_shinfo(skb)->nr_frags; | |
5523 | for (f = 0; f < nr_frags; f++) | |
d821a4c4 BA |
5524 | count += DIV_ROUND_UP(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
5525 | adapter->tx_fifo_limit); | |
bc7f75fa AK |
5526 | |
5527 | if (adapter->hw.mac.tx_pkt_filtering) | |
5528 | e1000_transfer_dhcp_info(adapter, skb); | |
5529 | ||
e921eb1a | 5530 | /* need: count + 2 desc gap to keep tail from touching |
ad68076e BA |
5531 | * head, otherwise try next time |
5532 | */ | |
55aa6985 | 5533 | if (e1000_maybe_stop_tx(tx_ring, count + 2)) |
bc7f75fa | 5534 | return NETDEV_TX_BUSY; |
bc7f75fa | 5535 | |
eab6d18d | 5536 | if (vlan_tx_tag_present(skb)) { |
bc7f75fa AK |
5537 | tx_flags |= E1000_TX_FLAGS_VLAN; |
5538 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
5539 | } | |
5540 | ||
5541 | first = tx_ring->next_to_use; | |
5542 | ||
55aa6985 | 5543 | tso = e1000_tso(tx_ring, skb); |
bc7f75fa AK |
5544 | if (tso < 0) { |
5545 | dev_kfree_skb_any(skb); | |
bc7f75fa AK |
5546 | return NETDEV_TX_OK; |
5547 | } | |
5548 | ||
5549 | if (tso) | |
5550 | tx_flags |= E1000_TX_FLAGS_TSO; | |
55aa6985 | 5551 | else if (e1000_tx_csum(tx_ring, skb)) |
bc7f75fa AK |
5552 | tx_flags |= E1000_TX_FLAGS_CSUM; |
5553 | ||
e921eb1a | 5554 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
bc7f75fa | 5555 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
ad68076e BA |
5556 | * no longer assume, we must. |
5557 | */ | |
bc7f75fa AK |
5558 | if (skb->protocol == htons(ETH_P_IP)) |
5559 | tx_flags |= E1000_TX_FLAGS_IPV4; | |
5560 | ||
943146de BG |
5561 | if (unlikely(skb->no_fcs)) |
5562 | tx_flags |= E1000_TX_FLAGS_NO_FCS; | |
5563 | ||
25985edc | 5564 | /* if count is 0 then mapping error has occurred */ |
d821a4c4 BA |
5565 | count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit, |
5566 | nr_frags); | |
1b7719c4 | 5567 | if (count) { |
b67e1913 BA |
5568 | if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && |
5569 | !adapter->tx_hwtstamp_skb)) { | |
5570 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; | |
5571 | tx_flags |= E1000_TX_FLAGS_HWTSTAMP; | |
5572 | adapter->tx_hwtstamp_skb = skb_get(skb); | |
59c871c5 | 5573 | adapter->tx_hwtstamp_start = jiffies; |
b67e1913 BA |
5574 | schedule_work(&adapter->tx_hwtstamp_work); |
5575 | } else { | |
5576 | skb_tx_timestamp(skb); | |
5577 | } | |
80be3129 | 5578 | |
3f0cfa3b | 5579 | netdev_sent_queue(netdev, skb->len); |
55aa6985 | 5580 | e1000_tx_queue(tx_ring, tx_flags, count); |
1b7719c4 | 5581 | /* Make sure there is space in the ring for the next send. */ |
d821a4c4 BA |
5582 | e1000_maybe_stop_tx(tx_ring, |
5583 | (MAX_SKB_FRAGS * | |
5584 | DIV_ROUND_UP(PAGE_SIZE, | |
5585 | adapter->tx_fifo_limit) + 2)); | |
1b7719c4 | 5586 | } else { |
bc7f75fa | 5587 | dev_kfree_skb_any(skb); |
1b7719c4 AD |
5588 | tx_ring->buffer_info[first].time_stamp = 0; |
5589 | tx_ring->next_to_use = first; | |
bc7f75fa AK |
5590 | } |
5591 | ||
bc7f75fa AK |
5592 | return NETDEV_TX_OK; |
5593 | } | |
5594 | ||
5595 | /** | |
5596 | * e1000_tx_timeout - Respond to a Tx Hang | |
5597 | * @netdev: network interface device structure | |
5598 | **/ | |
5599 | static void e1000_tx_timeout(struct net_device *netdev) | |
5600 | { | |
5601 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5602 | ||
5603 | /* Do the reset outside of interrupt context */ | |
5604 | adapter->tx_timeout_count++; | |
5605 | schedule_work(&adapter->reset_task); | |
5606 | } | |
5607 | ||
5608 | static void e1000_reset_task(struct work_struct *work) | |
5609 | { | |
5610 | struct e1000_adapter *adapter; | |
5611 | adapter = container_of(work, struct e1000_adapter, reset_task); | |
5612 | ||
615b32af JB |
5613 | /* don't run the task if already down */ |
5614 | if (test_bit(__E1000_DOWN, &adapter->state)) | |
5615 | return; | |
5616 | ||
12d43f7d | 5617 | if (!(adapter->flags & FLAG_RESTART_NOW)) { |
affa9dfb | 5618 | e1000e_dump(adapter); |
12d43f7d | 5619 | e_err("Reset adapter unexpectedly\n"); |
affa9dfb | 5620 | } |
bc7f75fa AK |
5621 | e1000e_reinit_locked(adapter); |
5622 | } | |
5623 | ||
5624 | /** | |
67fd4fcb | 5625 | * e1000_get_stats64 - Get System Network Statistics |
bc7f75fa | 5626 | * @netdev: network interface device structure |
67fd4fcb | 5627 | * @stats: rtnl_link_stats64 pointer |
bc7f75fa AK |
5628 | * |
5629 | * Returns the address of the device statistics structure. | |
bc7f75fa | 5630 | **/ |
67fd4fcb | 5631 | struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev, |
66501f56 | 5632 | struct rtnl_link_stats64 *stats) |
bc7f75fa | 5633 | { |
67fd4fcb JK |
5634 | struct e1000_adapter *adapter = netdev_priv(netdev); |
5635 | ||
5636 | memset(stats, 0, sizeof(struct rtnl_link_stats64)); | |
5637 | spin_lock(&adapter->stats64_lock); | |
5638 | e1000e_update_stats(adapter); | |
5639 | /* Fill out the OS statistics structure */ | |
5640 | stats->rx_bytes = adapter->stats.gorc; | |
5641 | stats->rx_packets = adapter->stats.gprc; | |
5642 | stats->tx_bytes = adapter->stats.gotc; | |
5643 | stats->tx_packets = adapter->stats.gptc; | |
5644 | stats->multicast = adapter->stats.mprc; | |
5645 | stats->collisions = adapter->stats.colc; | |
5646 | ||
5647 | /* Rx Errors */ | |
5648 | ||
e921eb1a | 5649 | /* RLEC on some newer hardware can be incorrect so build |
67fd4fcb JK |
5650 | * our own version based on RUC and ROC |
5651 | */ | |
5652 | stats->rx_errors = adapter->stats.rxerrc + | |
f0ff4398 BA |
5653 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
5654 | adapter->stats.ruc + adapter->stats.roc + adapter->stats.cexterr; | |
5655 | stats->rx_length_errors = adapter->stats.ruc + adapter->stats.roc; | |
67fd4fcb JK |
5656 | stats->rx_crc_errors = adapter->stats.crcerrs; |
5657 | stats->rx_frame_errors = adapter->stats.algnerrc; | |
5658 | stats->rx_missed_errors = adapter->stats.mpc; | |
5659 | ||
5660 | /* Tx Errors */ | |
f0ff4398 | 5661 | stats->tx_errors = adapter->stats.ecol + adapter->stats.latecol; |
67fd4fcb JK |
5662 | stats->tx_aborted_errors = adapter->stats.ecol; |
5663 | stats->tx_window_errors = adapter->stats.latecol; | |
5664 | stats->tx_carrier_errors = adapter->stats.tncrs; | |
5665 | ||
5666 | /* Tx Dropped needs to be maintained elsewhere */ | |
5667 | ||
5668 | spin_unlock(&adapter->stats64_lock); | |
5669 | return stats; | |
bc7f75fa AK |
5670 | } |
5671 | ||
5672 | /** | |
5673 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
5674 | * @netdev: network interface device structure | |
5675 | * @new_mtu: new value for maximum frame size | |
5676 | * | |
5677 | * Returns 0 on success, negative on failure | |
5678 | **/ | |
5679 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
5680 | { | |
5681 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5682 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
5683 | ||
2adc55c9 | 5684 | /* Jumbo frame support */ |
2e1706f2 BA |
5685 | if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && |
5686 | !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { | |
5687 | e_err("Jumbo Frames not supported.\n"); | |
5688 | return -EINVAL; | |
bc7f75fa AK |
5689 | } |
5690 | ||
2adc55c9 BA |
5691 | /* Supported frame sizes */ |
5692 | if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || | |
5693 | (max_frame > adapter->max_hw_frame_size)) { | |
5694 | e_err("Unsupported MTU setting\n"); | |
bc7f75fa AK |
5695 | return -EINVAL; |
5696 | } | |
5697 | ||
2fbe4526 BA |
5698 | /* Jumbo frame workaround on 82579 and newer requires CRC be stripped */ |
5699 | if ((adapter->hw.mac.type >= e1000_pch2lan) && | |
a1ce6473 BA |
5700 | !(adapter->flags2 & FLAG2_CRC_STRIPPING) && |
5701 | (new_mtu > ETH_DATA_LEN)) { | |
2fbe4526 | 5702 | e_err("Jumbo Frames not supported on this device when CRC stripping is disabled.\n"); |
a1ce6473 BA |
5703 | return -EINVAL; |
5704 | } | |
5705 | ||
bc7f75fa | 5706 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
1bba4386 | 5707 | usleep_range(1000, 2000); |
610c9928 | 5708 | /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
318a94d6 | 5709 | adapter->max_frame_size = max_frame; |
610c9928 BA |
5710 | e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
5711 | netdev->mtu = new_mtu; | |
63eb48f1 DE |
5712 | |
5713 | pm_runtime_get_sync(netdev->dev.parent); | |
5714 | ||
bc7f75fa | 5715 | if (netif_running(netdev)) |
28002099 | 5716 | e1000e_down(adapter, true); |
bc7f75fa | 5717 | |
e921eb1a | 5718 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
bc7f75fa AK |
5719 | * means we reserve 2 more, this pushes us to allocate from the next |
5720 | * larger slab size. | |
ad68076e | 5721 | * i.e. RXBUFFER_2048 --> size-4096 slab |
97ac8cae BA |
5722 | * However with the new *_jumbo_rx* routines, jumbo receives will use |
5723 | * fragmented skbs | |
ad68076e | 5724 | */ |
bc7f75fa | 5725 | |
9926146b | 5726 | if (max_frame <= 2048) |
bc7f75fa AK |
5727 | adapter->rx_buffer_len = 2048; |
5728 | else | |
5729 | adapter->rx_buffer_len = 4096; | |
5730 | ||
5731 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
5732 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
17e813ec | 5733 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
bc7f75fa | 5734 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN |
17e813ec | 5735 | + ETH_FCS_LEN; |
bc7f75fa | 5736 | |
bc7f75fa AK |
5737 | if (netif_running(netdev)) |
5738 | e1000e_up(adapter); | |
5739 | else | |
5740 | e1000e_reset(adapter); | |
5741 | ||
63eb48f1 DE |
5742 | pm_runtime_put_sync(netdev->dev.parent); |
5743 | ||
bc7f75fa AK |
5744 | clear_bit(__E1000_RESETTING, &adapter->state); |
5745 | ||
5746 | return 0; | |
5747 | } | |
5748 | ||
5749 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
5750 | int cmd) | |
5751 | { | |
5752 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5753 | struct mii_ioctl_data *data = if_mii(ifr); | |
bc7f75fa | 5754 | |
318a94d6 | 5755 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
bc7f75fa AK |
5756 | return -EOPNOTSUPP; |
5757 | ||
5758 | switch (cmd) { | |
5759 | case SIOCGMIIPHY: | |
5760 | data->phy_id = adapter->hw.phy.addr; | |
5761 | break; | |
5762 | case SIOCGMIIREG: | |
b16a002e BA |
5763 | e1000_phy_read_status(adapter); |
5764 | ||
7c25769f BA |
5765 | switch (data->reg_num & 0x1F) { |
5766 | case MII_BMCR: | |
5767 | data->val_out = adapter->phy_regs.bmcr; | |
5768 | break; | |
5769 | case MII_BMSR: | |
5770 | data->val_out = adapter->phy_regs.bmsr; | |
5771 | break; | |
5772 | case MII_PHYSID1: | |
5773 | data->val_out = (adapter->hw.phy.id >> 16); | |
5774 | break; | |
5775 | case MII_PHYSID2: | |
5776 | data->val_out = (adapter->hw.phy.id & 0xFFFF); | |
5777 | break; | |
5778 | case MII_ADVERTISE: | |
5779 | data->val_out = adapter->phy_regs.advertise; | |
5780 | break; | |
5781 | case MII_LPA: | |
5782 | data->val_out = adapter->phy_regs.lpa; | |
5783 | break; | |
5784 | case MII_EXPANSION: | |
5785 | data->val_out = adapter->phy_regs.expansion; | |
5786 | break; | |
5787 | case MII_CTRL1000: | |
5788 | data->val_out = adapter->phy_regs.ctrl1000; | |
5789 | break; | |
5790 | case MII_STAT1000: | |
5791 | data->val_out = adapter->phy_regs.stat1000; | |
5792 | break; | |
5793 | case MII_ESTATUS: | |
5794 | data->val_out = adapter->phy_regs.estatus; | |
5795 | break; | |
5796 | default: | |
bc7f75fa AK |
5797 | return -EIO; |
5798 | } | |
bc7f75fa AK |
5799 | break; |
5800 | case SIOCSMIIREG: | |
5801 | default: | |
5802 | return -EOPNOTSUPP; | |
5803 | } | |
5804 | return 0; | |
5805 | } | |
5806 | ||
b67e1913 BA |
5807 | /** |
5808 | * e1000e_hwtstamp_ioctl - control hardware time stamping | |
5809 | * @netdev: network interface device structure | |
5810 | * @ifreq: interface request | |
5811 | * | |
5812 | * Outgoing time stamping can be enabled and disabled. Play nice and | |
5813 | * disable it when requested, although it shouldn't cause any overhead | |
5814 | * when no packet needs it. At most one packet in the queue may be | |
5815 | * marked for time stamping, otherwise it would be impossible to tell | |
5816 | * for sure to which packet the hardware time stamp belongs. | |
5817 | * | |
5818 | * Incoming time stamping has to be configured via the hardware filters. | |
5819 | * Not all combinations are supported, in particular event type has to be | |
5820 | * specified. Matching the kind of event packet is not supported, with the | |
5821 | * exception of "all V2 events regardless of level 2 or 4". | |
5822 | **/ | |
4e8cff64 | 5823 | static int e1000e_hwtstamp_set(struct net_device *netdev, struct ifreq *ifr) |
b67e1913 BA |
5824 | { |
5825 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5826 | struct hwtstamp_config config; | |
5827 | int ret_val; | |
5828 | ||
5829 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) | |
5830 | return -EFAULT; | |
5831 | ||
62d7e3a2 | 5832 | ret_val = e1000e_config_hwtstamp(adapter, &config); |
b67e1913 BA |
5833 | if (ret_val) |
5834 | return ret_val; | |
5835 | ||
d89777bf BA |
5836 | switch (config.rx_filter) { |
5837 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
5838 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
5839 | case HWTSTAMP_FILTER_PTP_V2_SYNC: | |
5840 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: | |
5841 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
5842 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
5843 | /* With V2 type filters which specify a Sync or Delay Request, | |
5844 | * Path Delay Request/Response messages are also time stamped | |
5845 | * by hardware so notify the caller the requested packets plus | |
5846 | * some others are time stamped. | |
5847 | */ | |
5848 | config.rx_filter = HWTSTAMP_FILTER_SOME; | |
5849 | break; | |
5850 | default: | |
5851 | break; | |
5852 | } | |
5853 | ||
b67e1913 BA |
5854 | return copy_to_user(ifr->ifr_data, &config, |
5855 | sizeof(config)) ? -EFAULT : 0; | |
5856 | } | |
5857 | ||
4e8cff64 BH |
5858 | static int e1000e_hwtstamp_get(struct net_device *netdev, struct ifreq *ifr) |
5859 | { | |
5860 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5861 | ||
5862 | return copy_to_user(ifr->ifr_data, &adapter->hwtstamp_config, | |
5863 | sizeof(adapter->hwtstamp_config)) ? -EFAULT : 0; | |
5864 | } | |
5865 | ||
bc7f75fa AK |
5866 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
5867 | { | |
5868 | switch (cmd) { | |
5869 | case SIOCGMIIPHY: | |
5870 | case SIOCGMIIREG: | |
5871 | case SIOCSMIIREG: | |
5872 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
b67e1913 | 5873 | case SIOCSHWTSTAMP: |
4e8cff64 BH |
5874 | return e1000e_hwtstamp_set(netdev, ifr); |
5875 | case SIOCGHWTSTAMP: | |
5876 | return e1000e_hwtstamp_get(netdev, ifr); | |
bc7f75fa AK |
5877 | default: |
5878 | return -EOPNOTSUPP; | |
5879 | } | |
5880 | } | |
5881 | ||
a4f58f54 BA |
5882 | static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
5883 | { | |
5884 | struct e1000_hw *hw = &adapter->hw; | |
74f350ee | 5885 | u32 i, mac_reg, wuc; |
2b6b168d | 5886 | u16 phy_reg, wuc_enable; |
70806a7f | 5887 | int retval; |
a4f58f54 BA |
5888 | |
5889 | /* copy MAC RARs to PHY RARs */ | |
d3738bb8 | 5890 | e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
a4f58f54 | 5891 | |
2b6b168d BA |
5892 | retval = hw->phy.ops.acquire(hw); |
5893 | if (retval) { | |
5894 | e_err("Could not acquire PHY\n"); | |
5895 | return retval; | |
5896 | } | |
5897 | ||
5898 | /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */ | |
5899 | retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable); | |
5900 | if (retval) | |
75ce1532 | 5901 | goto release; |
2b6b168d BA |
5902 | |
5903 | /* copy MAC MTA to PHY MTA - only needed for pchlan */ | |
a4f58f54 BA |
5904 | for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { |
5905 | mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); | |
2b6b168d BA |
5906 | hw->phy.ops.write_reg_page(hw, BM_MTA(i), |
5907 | (u16)(mac_reg & 0xFFFF)); | |
5908 | hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1, | |
5909 | (u16)((mac_reg >> 16) & 0xFFFF)); | |
a4f58f54 BA |
5910 | } |
5911 | ||
5912 | /* configure PHY Rx Control register */ | |
2b6b168d | 5913 | hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg); |
a4f58f54 BA |
5914 | mac_reg = er32(RCTL); |
5915 | if (mac_reg & E1000_RCTL_UPE) | |
5916 | phy_reg |= BM_RCTL_UPE; | |
5917 | if (mac_reg & E1000_RCTL_MPE) | |
5918 | phy_reg |= BM_RCTL_MPE; | |
5919 | phy_reg &= ~(BM_RCTL_MO_MASK); | |
5920 | if (mac_reg & E1000_RCTL_MO_3) | |
5921 | phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) | |
17e813ec | 5922 | << BM_RCTL_MO_SHIFT); |
a4f58f54 BA |
5923 | if (mac_reg & E1000_RCTL_BAM) |
5924 | phy_reg |= BM_RCTL_BAM; | |
5925 | if (mac_reg & E1000_RCTL_PMCF) | |
5926 | phy_reg |= BM_RCTL_PMCF; | |
5927 | mac_reg = er32(CTRL); | |
5928 | if (mac_reg & E1000_CTRL_RFCE) | |
5929 | phy_reg |= BM_RCTL_RFCE; | |
2b6b168d | 5930 | hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg); |
a4f58f54 | 5931 | |
74f350ee DE |
5932 | wuc = E1000_WUC_PME_EN; |
5933 | if (wufc & (E1000_WUFC_MAG | E1000_WUFC_LNKC)) | |
5934 | wuc |= E1000_WUC_APME; | |
5935 | ||
a4f58f54 BA |
5936 | /* enable PHY wakeup in MAC register */ |
5937 | ew32(WUFC, wufc); | |
74f350ee DE |
5938 | ew32(WUC, (E1000_WUC_PHY_WAKE | E1000_WUC_APMPME | |
5939 | E1000_WUC_PME_STATUS | wuc)); | |
a4f58f54 BA |
5940 | |
5941 | /* configure and enable PHY wakeup in PHY registers */ | |
2b6b168d | 5942 | hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc); |
74f350ee | 5943 | hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, wuc); |
a4f58f54 BA |
5944 | |
5945 | /* activate PHY wakeup */ | |
2b6b168d BA |
5946 | wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; |
5947 | retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable); | |
a4f58f54 BA |
5948 | if (retval) |
5949 | e_err("Could not set PHY Host Wakeup bit\n"); | |
75ce1532 | 5950 | release: |
94d8186a | 5951 | hw->phy.ops.release(hw); |
a4f58f54 BA |
5952 | |
5953 | return retval; | |
5954 | } | |
5955 | ||
28002099 | 5956 | static int e1000e_pm_freeze(struct device *dev) |
bc7f75fa | 5957 | { |
28002099 | 5958 | struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); |
bc7f75fa | 5959 | struct e1000_adapter *adapter = netdev_priv(netdev); |
bc7f75fa AK |
5960 | |
5961 | netif_device_detach(netdev); | |
5962 | ||
5963 | if (netif_running(netdev)) { | |
bb9e44d0 BA |
5964 | int count = E1000_CHECK_RESET_COUNT; |
5965 | ||
5966 | while (test_bit(__E1000_RESETTING, &adapter->state) && count--) | |
5967 | usleep_range(10000, 20000); | |
5968 | ||
bc7f75fa | 5969 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
28002099 DE |
5970 | |
5971 | /* Quiesce the device without resetting the hardware */ | |
5972 | e1000e_down(adapter, false); | |
bc7f75fa AK |
5973 | e1000_free_irq(adapter); |
5974 | } | |
4662e82b | 5975 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa | 5976 | |
28002099 DE |
5977 | /* Allow time for pending master requests to run */ |
5978 | e1000e_disable_pcie_master(&adapter->hw); | |
5979 | ||
5980 | return 0; | |
5981 | } | |
5982 | ||
5983 | static int __e1000_shutdown(struct pci_dev *pdev, bool runtime) | |
5984 | { | |
5985 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5986 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5987 | struct e1000_hw *hw = &adapter->hw; | |
5988 | u32 ctrl, ctrl_ext, rctl, status; | |
5989 | /* Runtime suspend should only enable wakeup for link changes */ | |
5990 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; | |
5991 | int retval = 0; | |
5992 | ||
bc7f75fa AK |
5993 | status = er32(STATUS); |
5994 | if (status & E1000_STATUS_LU) | |
5995 | wufc &= ~E1000_WUFC_LNKC; | |
5996 | ||
5997 | if (wufc) { | |
5998 | e1000_setup_rctl(adapter); | |
ef9b965a | 5999 | e1000e_set_rx_mode(netdev); |
bc7f75fa AK |
6000 | |
6001 | /* turn on all-multi mode if wake on multicast is enabled */ | |
6002 | if (wufc & E1000_WUFC_MC) { | |
6003 | rctl = er32(RCTL); | |
6004 | rctl |= E1000_RCTL_MPE; | |
6005 | ew32(RCTL, rctl); | |
6006 | } | |
6007 | ||
6008 | ctrl = er32(CTRL); | |
a4f58f54 BA |
6009 | ctrl |= E1000_CTRL_ADVD3WUC; |
6010 | if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) | |
6011 | ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; | |
bc7f75fa AK |
6012 | ew32(CTRL, ctrl); |
6013 | ||
318a94d6 JK |
6014 | if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
6015 | adapter->hw.phy.media_type == | |
6016 | e1000_media_type_internal_serdes) { | |
bc7f75fa AK |
6017 | /* keep the laser running in D3 */ |
6018 | ctrl_ext = er32(CTRL_EXT); | |
93a23f48 | 6019 | ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
bc7f75fa AK |
6020 | ew32(CTRL_EXT, ctrl_ext); |
6021 | } | |
6022 | ||
63eb48f1 DE |
6023 | if (!runtime) |
6024 | e1000e_power_up_phy(adapter); | |
6025 | ||
97ac8cae | 6026 | if (adapter->flags & FLAG_IS_ICH) |
99730e4c | 6027 | e1000_suspend_workarounds_ich8lan(&adapter->hw); |
97ac8cae | 6028 | |
82776a4b | 6029 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
a4f58f54 BA |
6030 | /* enable wakeup by the PHY */ |
6031 | retval = e1000_init_phy_wakeup(adapter, wufc); | |
6032 | if (retval) | |
6033 | return retval; | |
6034 | } else { | |
6035 | /* enable wakeup by the MAC */ | |
6036 | ew32(WUFC, wufc); | |
6037 | ew32(WUC, E1000_WUC_PME_EN); | |
6038 | } | |
bc7f75fa AK |
6039 | } else { |
6040 | ew32(WUC, 0); | |
6041 | ew32(WUFC, 0); | |
28002099 DE |
6042 | |
6043 | e1000_power_down_phy(adapter); | |
bc7f75fa AK |
6044 | } |
6045 | ||
74f350ee | 6046 | if (adapter->hw.phy.type == e1000_phy_igp_3) { |
bc7f75fa | 6047 | e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); |
74f350ee DE |
6048 | } else if (hw->mac.type == e1000_pch_lpt) { |
6049 | if (!(wufc & (E1000_WUFC_EX | E1000_WUFC_MC | E1000_WUFC_BC))) | |
6050 | /* ULP does not support wake from unicast, multicast | |
6051 | * or broadcast. | |
6052 | */ | |
6053 | retval = e1000_enable_ulp_lpt_lp(hw, !runtime); | |
6054 | ||
6055 | if (retval) | |
6056 | return retval; | |
6057 | } | |
6058 | ||
bc7f75fa | 6059 | |
e921eb1a | 6060 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
ad68076e BA |
6061 | * would have already happened in close and is redundant. |
6062 | */ | |
31dbe5b4 | 6063 | e1000e_release_hw_control(adapter); |
bc7f75fa | 6064 | |
24b41c97 DN |
6065 | pci_clear_master(pdev); |
6066 | ||
e921eb1a | 6067 | /* The pci-e switch on some quad port adapters will report a |
005cbdfc AD |
6068 | * correctable error when the MAC transitions from D0 to D3. To |
6069 | * prevent this we need to mask off the correctable errors on the | |
6070 | * downstream port of the pci-e switch. | |
e8c254c5 LZ |
6071 | * |
6072 | * We don't have the associated upstream bridge while assigning | |
6073 | * the PCI device into guest. For example, the KVM on power is | |
6074 | * one of the cases. | |
005cbdfc AD |
6075 | */ |
6076 | if (adapter->flags & FLAG_IS_QUAD_PORT) { | |
6077 | struct pci_dev *us_dev = pdev->bus->self; | |
005cbdfc AD |
6078 | u16 devctl; |
6079 | ||
e8c254c5 LZ |
6080 | if (!us_dev) |
6081 | return 0; | |
6082 | ||
f8c0fcac JL |
6083 | pcie_capability_read_word(us_dev, PCI_EXP_DEVCTL, &devctl); |
6084 | pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, | |
6085 | (devctl & ~PCI_EXP_DEVCTL_CERE)); | |
005cbdfc | 6086 | |
66148bab KK |
6087 | pci_save_state(pdev); |
6088 | pci_prepare_to_sleep(pdev); | |
005cbdfc | 6089 | |
f8c0fcac | 6090 | pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl); |
005cbdfc | 6091 | } |
66148bab KK |
6092 | |
6093 | return 0; | |
bc7f75fa AK |
6094 | } |
6095 | ||
13129d9b CW |
6096 | /** |
6097 | * e1000e_disable_aspm - Disable ASPM states | |
6098 | * @pdev: pointer to PCI device struct | |
6099 | * @state: bit-mask of ASPM states to disable | |
6100 | * | |
6101 | * Some devices *must* have certain ASPM states disabled per hardware errata. | |
6102 | **/ | |
6103 | static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) | |
6f461f6c | 6104 | { |
13129d9b CW |
6105 | struct pci_dev *parent = pdev->bus->self; |
6106 | u16 aspm_dis_mask = 0; | |
6107 | u16 pdev_aspmc, parent_aspmc; | |
6108 | ||
6109 | switch (state) { | |
6110 | case PCIE_LINK_STATE_L0S: | |
6111 | case PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1: | |
6112 | aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L0S; | |
6113 | /* fall-through - can't have L1 without L0s */ | |
6114 | case PCIE_LINK_STATE_L1: | |
6115 | aspm_dis_mask |= PCI_EXP_LNKCTL_ASPM_L1; | |
6116 | break; | |
6117 | default: | |
6118 | return; | |
6119 | } | |
6120 | ||
6121 | pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc); | |
6122 | pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC; | |
6123 | ||
6124 | if (parent) { | |
6125 | pcie_capability_read_word(parent, PCI_EXP_LNKCTL, | |
6126 | &parent_aspmc); | |
6127 | parent_aspmc &= PCI_EXP_LNKCTL_ASPMC; | |
6128 | } | |
6129 | ||
6130 | /* Nothing to do if the ASPM states to be disabled already are */ | |
6131 | if (!(pdev_aspmc & aspm_dis_mask) && | |
6132 | (!parent || !(parent_aspmc & aspm_dis_mask))) | |
6133 | return; | |
6134 | ||
6135 | dev_info(&pdev->dev, "Disabling ASPM %s %s\n", | |
6136 | (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L0S) ? | |
6137 | "L0s" : "", | |
6138 | (aspm_dis_mask & pdev_aspmc & PCI_EXP_LNKCTL_ASPM_L1) ? | |
6139 | "L1" : ""); | |
6140 | ||
6141 | #ifdef CONFIG_PCIEASPM | |
9f728f53 | 6142 | pci_disable_link_state_locked(pdev, state); |
ffe0b2ff | 6143 | |
13129d9b CW |
6144 | /* Double-check ASPM control. If not disabled by the above, the |
6145 | * BIOS is preventing that from happening (or CONFIG_PCIEASPM is | |
6146 | * not enabled); override by writing PCI config space directly. | |
6147 | */ | |
6148 | pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &pdev_aspmc); | |
6149 | pdev_aspmc &= PCI_EXP_LNKCTL_ASPMC; | |
6150 | ||
6151 | if (!(aspm_dis_mask & pdev_aspmc)) | |
6152 | return; | |
6153 | #endif | |
ffe0b2ff | 6154 | |
e921eb1a | 6155 | /* Both device and parent should have the same ASPM setting. |
6f461f6c | 6156 | * Disable ASPM in downstream component first and then upstream. |
1eae4eb2 | 6157 | */ |
13129d9b | 6158 | pcie_capability_clear_word(pdev, PCI_EXP_LNKCTL, aspm_dis_mask); |
6f461f6c | 6159 | |
13129d9b CW |
6160 | if (parent) |
6161 | pcie_capability_clear_word(parent, PCI_EXP_LNKCTL, | |
6162 | aspm_dis_mask); | |
1eae4eb2 AK |
6163 | } |
6164 | ||
aa338601 | 6165 | #ifdef CONFIG_PM |
23606cf5 | 6166 | static int __e1000_resume(struct pci_dev *pdev) |
bc7f75fa AK |
6167 | { |
6168 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6169 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6170 | struct e1000_hw *hw = &adapter->hw; | |
78cd29d5 | 6171 | u16 aspm_disable_flag = 0; |
bc7f75fa | 6172 | |
78cd29d5 BA |
6173 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
6174 | aspm_disable_flag = PCIE_LINK_STATE_L0S; | |
6175 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) | |
6176 | aspm_disable_flag |= PCIE_LINK_STATE_L1; | |
6177 | if (aspm_disable_flag) | |
6178 | e1000e_disable_aspm(pdev, aspm_disable_flag); | |
6179 | ||
66148bab | 6180 | pci_set_master(pdev); |
6e4f6f6b | 6181 | |
2fbe4526 | 6182 | if (hw->mac.type >= e1000_pch2lan) |
99730e4c BA |
6183 | e1000_resume_workarounds_pchlan(&adapter->hw); |
6184 | ||
bc7f75fa | 6185 | e1000e_power_up_phy(adapter); |
a4f58f54 BA |
6186 | |
6187 | /* report the system wakeup cause from S3/S4 */ | |
6188 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { | |
6189 | u16 phy_data; | |
6190 | ||
6191 | e1e_rphy(&adapter->hw, BM_WUS, &phy_data); | |
6192 | if (phy_data) { | |
6193 | e_info("PHY Wakeup cause - %s\n", | |
17e813ec BA |
6194 | phy_data & E1000_WUS_EX ? "Unicast Packet" : |
6195 | phy_data & E1000_WUS_MC ? "Multicast Packet" : | |
6196 | phy_data & E1000_WUS_BC ? "Broadcast Packet" : | |
6197 | phy_data & E1000_WUS_MAG ? "Magic Packet" : | |
6198 | phy_data & E1000_WUS_LNKC ? | |
6199 | "Link Status Change" : "other"); | |
a4f58f54 BA |
6200 | } |
6201 | e1e_wphy(&adapter->hw, BM_WUS, ~0); | |
6202 | } else { | |
6203 | u32 wus = er32(WUS); | |
6204 | if (wus) { | |
6205 | e_info("MAC Wakeup cause - %s\n", | |
17e813ec BA |
6206 | wus & E1000_WUS_EX ? "Unicast Packet" : |
6207 | wus & E1000_WUS_MC ? "Multicast Packet" : | |
6208 | wus & E1000_WUS_BC ? "Broadcast Packet" : | |
6209 | wus & E1000_WUS_MAG ? "Magic Packet" : | |
6210 | wus & E1000_WUS_LNKC ? "Link Status Change" : | |
6211 | "other"); | |
a4f58f54 BA |
6212 | } |
6213 | ew32(WUS, ~0); | |
6214 | } | |
6215 | ||
bc7f75fa | 6216 | e1000e_reset(adapter); |
bc7f75fa | 6217 | |
cd791618 | 6218 | e1000_init_manageability_pt(adapter); |
bc7f75fa | 6219 | |
e921eb1a | 6220 | /* If the controller has AMT, do not set DRV_LOAD until the interface |
bc7f75fa | 6221 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
6222 | * under the control of the driver. |
6223 | */ | |
c43bc57e | 6224 | if (!(adapter->flags & FLAG_HAS_AMT)) |
31dbe5b4 | 6225 | e1000e_get_hw_control(adapter); |
bc7f75fa AK |
6226 | |
6227 | return 0; | |
6228 | } | |
23606cf5 | 6229 | |
28002099 DE |
6230 | static int e1000e_pm_thaw(struct device *dev) |
6231 | { | |
6232 | struct net_device *netdev = pci_get_drvdata(to_pci_dev(dev)); | |
6233 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6234 | ||
6235 | e1000e_set_interrupt_capability(adapter); | |
6236 | if (netif_running(netdev)) { | |
6237 | u32 err = e1000_request_irq(adapter); | |
6238 | ||
6239 | if (err) | |
6240 | return err; | |
6241 | ||
6242 | e1000e_up(adapter); | |
6243 | } | |
6244 | ||
6245 | netif_device_attach(netdev); | |
6246 | ||
6247 | return 0; | |
6248 | } | |
6249 | ||
38a529b5 | 6250 | #ifdef CONFIG_PM_SLEEP |
28002099 | 6251 | static int e1000e_pm_suspend(struct device *dev) |
a0340162 RW |
6252 | { |
6253 | struct pci_dev *pdev = to_pci_dev(dev); | |
a0340162 | 6254 | |
28002099 DE |
6255 | e1000e_pm_freeze(dev); |
6256 | ||
66148bab | 6257 | return __e1000_shutdown(pdev, false); |
a0340162 RW |
6258 | } |
6259 | ||
28002099 | 6260 | static int e1000e_pm_resume(struct device *dev) |
23606cf5 RW |
6261 | { |
6262 | struct pci_dev *pdev = to_pci_dev(dev); | |
28002099 | 6263 | int rc; |
23606cf5 | 6264 | |
28002099 DE |
6265 | rc = __e1000_resume(pdev); |
6266 | if (rc) | |
6267 | return rc; | |
23606cf5 | 6268 | |
28002099 | 6269 | return e1000e_pm_thaw(dev); |
23606cf5 | 6270 | } |
38a529b5 | 6271 | #endif /* CONFIG_PM_SLEEP */ |
a0340162 RW |
6272 | |
6273 | #ifdef CONFIG_PM_RUNTIME | |
63eb48f1 | 6274 | static int e1000e_pm_runtime_idle(struct device *dev) |
a0340162 RW |
6275 | { |
6276 | struct pci_dev *pdev = to_pci_dev(dev); | |
6277 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6278 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6279 | ||
63eb48f1 DE |
6280 | if (!e1000e_has_link(adapter)) |
6281 | pm_schedule_suspend(dev, 5 * MSEC_PER_SEC); | |
a0340162 | 6282 | |
63eb48f1 | 6283 | return -EBUSY; |
a0340162 RW |
6284 | } |
6285 | ||
63eb48f1 | 6286 | static int e1000e_pm_runtime_resume(struct device *dev) |
a0340162 RW |
6287 | { |
6288 | struct pci_dev *pdev = to_pci_dev(dev); | |
6289 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6290 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
63eb48f1 | 6291 | int rc; |
a0340162 | 6292 | |
63eb48f1 DE |
6293 | rc = __e1000_resume(pdev); |
6294 | if (rc) | |
6295 | return rc; | |
a0340162 | 6296 | |
63eb48f1 DE |
6297 | if (netdev->flags & IFF_UP) |
6298 | rc = e1000e_up(adapter); | |
a0340162 | 6299 | |
63eb48f1 | 6300 | return rc; |
a0340162 | 6301 | } |
23606cf5 | 6302 | |
63eb48f1 | 6303 | static int e1000e_pm_runtime_suspend(struct device *dev) |
23606cf5 RW |
6304 | { |
6305 | struct pci_dev *pdev = to_pci_dev(dev); | |
6306 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6307 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6308 | ||
63eb48f1 DE |
6309 | if (netdev->flags & IFF_UP) { |
6310 | int count = E1000_CHECK_RESET_COUNT; | |
6311 | ||
6312 | while (test_bit(__E1000_RESETTING, &adapter->state) && count--) | |
6313 | usleep_range(10000, 20000); | |
23606cf5 | 6314 | |
63eb48f1 DE |
6315 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); |
6316 | ||
6317 | /* Down the device without resetting the hardware */ | |
6318 | e1000e_down(adapter, false); | |
6319 | } | |
6320 | ||
6321 | if (__e1000_shutdown(pdev, true)) { | |
6322 | e1000e_pm_runtime_resume(dev); | |
6323 | return -EBUSY; | |
6324 | } | |
6325 | ||
6326 | return 0; | |
23606cf5 | 6327 | } |
a0340162 | 6328 | #endif /* CONFIG_PM_RUNTIME */ |
aa338601 | 6329 | #endif /* CONFIG_PM */ |
bc7f75fa AK |
6330 | |
6331 | static void e1000_shutdown(struct pci_dev *pdev) | |
6332 | { | |
28002099 DE |
6333 | e1000e_pm_freeze(&pdev->dev); |
6334 | ||
66148bab | 6335 | __e1000_shutdown(pdev, false); |
bc7f75fa AK |
6336 | } |
6337 | ||
6338 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
147b2c8c | 6339 | |
8bb62869 | 6340 | static irqreturn_t e1000_intr_msix(int __always_unused irq, void *data) |
147b2c8c DD |
6341 | { |
6342 | struct net_device *netdev = data; | |
6343 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
147b2c8c DD |
6344 | |
6345 | if (adapter->msix_entries) { | |
90da0669 BA |
6346 | int vector, msix_irq; |
6347 | ||
147b2c8c DD |
6348 | vector = 0; |
6349 | msix_irq = adapter->msix_entries[vector].vector; | |
6350 | disable_irq(msix_irq); | |
6351 | e1000_intr_msix_rx(msix_irq, netdev); | |
6352 | enable_irq(msix_irq); | |
6353 | ||
6354 | vector++; | |
6355 | msix_irq = adapter->msix_entries[vector].vector; | |
6356 | disable_irq(msix_irq); | |
6357 | e1000_intr_msix_tx(msix_irq, netdev); | |
6358 | enable_irq(msix_irq); | |
6359 | ||
6360 | vector++; | |
6361 | msix_irq = adapter->msix_entries[vector].vector; | |
6362 | disable_irq(msix_irq); | |
6363 | e1000_msix_other(msix_irq, netdev); | |
6364 | enable_irq(msix_irq); | |
6365 | } | |
6366 | ||
6367 | return IRQ_HANDLED; | |
6368 | } | |
6369 | ||
e921eb1a BA |
6370 | /** |
6371 | * e1000_netpoll | |
6372 | * @netdev: network interface device structure | |
6373 | * | |
bc7f75fa AK |
6374 | * Polling 'interrupt' - used by things like netconsole to send skbs |
6375 | * without having to re-enable interrupts. It's not called while | |
6376 | * the interrupt routine is executing. | |
6377 | */ | |
6378 | static void e1000_netpoll(struct net_device *netdev) | |
6379 | { | |
6380 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6381 | ||
147b2c8c DD |
6382 | switch (adapter->int_mode) { |
6383 | case E1000E_INT_MODE_MSIX: | |
6384 | e1000_intr_msix(adapter->pdev->irq, netdev); | |
6385 | break; | |
6386 | case E1000E_INT_MODE_MSI: | |
6387 | disable_irq(adapter->pdev->irq); | |
6388 | e1000_intr_msi(adapter->pdev->irq, netdev); | |
6389 | enable_irq(adapter->pdev->irq); | |
6390 | break; | |
e80bd1d1 | 6391 | default: /* E1000E_INT_MODE_LEGACY */ |
147b2c8c DD |
6392 | disable_irq(adapter->pdev->irq); |
6393 | e1000_intr(adapter->pdev->irq, netdev); | |
6394 | enable_irq(adapter->pdev->irq); | |
6395 | break; | |
6396 | } | |
bc7f75fa AK |
6397 | } |
6398 | #endif | |
6399 | ||
6400 | /** | |
6401 | * e1000_io_error_detected - called when PCI error is detected | |
6402 | * @pdev: Pointer to PCI device | |
6403 | * @state: The current pci connection state | |
6404 | * | |
6405 | * This function is called after a PCI bus error affecting | |
6406 | * this device has been detected. | |
6407 | */ | |
6408 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, | |
6409 | pci_channel_state_t state) | |
6410 | { | |
6411 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6412 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6413 | ||
6414 | netif_device_detach(netdev); | |
6415 | ||
c93b5a76 MM |
6416 | if (state == pci_channel_io_perm_failure) |
6417 | return PCI_ERS_RESULT_DISCONNECT; | |
6418 | ||
bc7f75fa | 6419 | if (netif_running(netdev)) |
28002099 | 6420 | e1000e_down(adapter, true); |
bc7f75fa AK |
6421 | pci_disable_device(pdev); |
6422 | ||
6423 | /* Request a slot slot reset. */ | |
6424 | return PCI_ERS_RESULT_NEED_RESET; | |
6425 | } | |
6426 | ||
6427 | /** | |
6428 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
6429 | * @pdev: Pointer to PCI device | |
6430 | * | |
6431 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
28002099 | 6432 | * resembles the first-half of the e1000e_pm_resume routine. |
bc7f75fa AK |
6433 | */ |
6434 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
6435 | { | |
6436 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6437 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6438 | struct e1000_hw *hw = &adapter->hw; | |
78cd29d5 | 6439 | u16 aspm_disable_flag = 0; |
6e4f6f6b | 6440 | int err; |
111b9dc5 | 6441 | pci_ers_result_t result; |
bc7f75fa | 6442 | |
78cd29d5 BA |
6443 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S) |
6444 | aspm_disable_flag = PCIE_LINK_STATE_L0S; | |
6f461f6c | 6445 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
78cd29d5 BA |
6446 | aspm_disable_flag |= PCIE_LINK_STATE_L1; |
6447 | if (aspm_disable_flag) | |
6448 | e1000e_disable_aspm(pdev, aspm_disable_flag); | |
6449 | ||
f0f422e5 | 6450 | err = pci_enable_device_mem(pdev); |
6e4f6f6b | 6451 | if (err) { |
bc7f75fa AK |
6452 | dev_err(&pdev->dev, |
6453 | "Cannot re-enable PCI device after reset.\n"); | |
111b9dc5 JB |
6454 | result = PCI_ERS_RESULT_DISCONNECT; |
6455 | } else { | |
23606cf5 | 6456 | pdev->state_saved = true; |
111b9dc5 | 6457 | pci_restore_state(pdev); |
66148bab | 6458 | pci_set_master(pdev); |
bc7f75fa | 6459 | |
111b9dc5 JB |
6460 | pci_enable_wake(pdev, PCI_D3hot, 0); |
6461 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
bc7f75fa | 6462 | |
111b9dc5 JB |
6463 | e1000e_reset(adapter); |
6464 | ew32(WUS, ~0); | |
6465 | result = PCI_ERS_RESULT_RECOVERED; | |
6466 | } | |
bc7f75fa | 6467 | |
111b9dc5 JB |
6468 | pci_cleanup_aer_uncorrect_error_status(pdev); |
6469 | ||
6470 | return result; | |
bc7f75fa AK |
6471 | } |
6472 | ||
6473 | /** | |
6474 | * e1000_io_resume - called when traffic can start flowing again. | |
6475 | * @pdev: Pointer to PCI device | |
6476 | * | |
6477 | * This callback is called when the error recovery driver tells us that | |
6478 | * its OK to resume normal operation. Implementation resembles the | |
28002099 | 6479 | * second-half of the e1000e_pm_resume routine. |
bc7f75fa AK |
6480 | */ |
6481 | static void e1000_io_resume(struct pci_dev *pdev) | |
6482 | { | |
6483 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6484 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
6485 | ||
cd791618 | 6486 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
6487 | |
6488 | if (netif_running(netdev)) { | |
6489 | if (e1000e_up(adapter)) { | |
6490 | dev_err(&pdev->dev, | |
6491 | "can't bring device back up after reset\n"); | |
6492 | return; | |
6493 | } | |
6494 | } | |
6495 | ||
6496 | netif_device_attach(netdev); | |
6497 | ||
e921eb1a | 6498 | /* If the controller has AMT, do not set DRV_LOAD until the interface |
bc7f75fa | 6499 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
6500 | * under the control of the driver. |
6501 | */ | |
c43bc57e | 6502 | if (!(adapter->flags & FLAG_HAS_AMT)) |
31dbe5b4 | 6503 | e1000e_get_hw_control(adapter); |
bc7f75fa AK |
6504 | } |
6505 | ||
6506 | static void e1000_print_device_info(struct e1000_adapter *adapter) | |
6507 | { | |
6508 | struct e1000_hw *hw = &adapter->hw; | |
6509 | struct net_device *netdev = adapter->netdev; | |
073287c0 BA |
6510 | u32 ret_val; |
6511 | u8 pba_str[E1000_PBANUM_LENGTH]; | |
bc7f75fa AK |
6512 | |
6513 | /* print bus type/speed/width info */ | |
a5cc7642 | 6514 | e_info("(PCI Express:2.5GT/s:%s) %pM\n", |
44defeb3 JK |
6515 | /* bus width */ |
6516 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : | |
f0ff4398 | 6517 | "Width x1"), |
44defeb3 | 6518 | /* MAC address */ |
7c510e4b | 6519 | netdev->dev_addr); |
44defeb3 JK |
6520 | e_info("Intel(R) PRO/%s Network Connection\n", |
6521 | (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); | |
073287c0 BA |
6522 | ret_val = e1000_read_pba_string_generic(hw, pba_str, |
6523 | E1000_PBANUM_LENGTH); | |
6524 | if (ret_val) | |
f2315bf1 | 6525 | strlcpy((char *)pba_str, "Unknown", sizeof(pba_str)); |
073287c0 BA |
6526 | e_info("MAC: %d, PHY: %d, PBA No: %s\n", |
6527 | hw->mac.type, hw->phy.type, pba_str); | |
bc7f75fa AK |
6528 | } |
6529 | ||
10aa4c04 AK |
6530 | static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
6531 | { | |
6532 | struct e1000_hw *hw = &adapter->hw; | |
6533 | int ret_val; | |
6534 | u16 buf = 0; | |
6535 | ||
6536 | if (hw->mac.type != e1000_82573) | |
6537 | return; | |
6538 | ||
6539 | ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); | |
e885d762 BA |
6540 | le16_to_cpus(&buf); |
6541 | if (!ret_val && (!(buf & (1 << 0)))) { | |
10aa4c04 | 6542 | /* Deep Smart Power Down (DSPD) */ |
6c2a9efa FP |
6543 | dev_warn(&adapter->pdev->dev, |
6544 | "Warning: detected DSPD enabled in EEPROM\n"); | |
10aa4c04 | 6545 | } |
10aa4c04 AK |
6546 | } |
6547 | ||
c8f44aff | 6548 | static int e1000_set_features(struct net_device *netdev, |
70495a50 | 6549 | netdev_features_t features) |
dc221294 BA |
6550 | { |
6551 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
c8f44aff | 6552 | netdev_features_t changed = features ^ netdev->features; |
dc221294 BA |
6553 | |
6554 | if (changed & (NETIF_F_TSO | NETIF_F_TSO6)) | |
6555 | adapter->flags |= FLAG_TSO_FORCE; | |
6556 | ||
f646968f | 6557 | if (!(changed & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX | |
cf955e6c BG |
6558 | NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS | |
6559 | NETIF_F_RXALL))) | |
dc221294 BA |
6560 | return 0; |
6561 | ||
0184039a BG |
6562 | if (changed & NETIF_F_RXFCS) { |
6563 | if (features & NETIF_F_RXFCS) { | |
6564 | adapter->flags2 &= ~FLAG2_CRC_STRIPPING; | |
6565 | } else { | |
6566 | /* We need to take it back to defaults, which might mean | |
6567 | * stripping is still disabled at the adapter level. | |
6568 | */ | |
6569 | if (adapter->flags2 & FLAG2_DFLT_CRC_STRIPPING) | |
6570 | adapter->flags2 |= FLAG2_CRC_STRIPPING; | |
6571 | else | |
6572 | adapter->flags2 &= ~FLAG2_CRC_STRIPPING; | |
6573 | } | |
6574 | } | |
6575 | ||
70495a50 BA |
6576 | netdev->features = features; |
6577 | ||
dc221294 BA |
6578 | if (netif_running(netdev)) |
6579 | e1000e_reinit_locked(adapter); | |
6580 | else | |
6581 | e1000e_reset(adapter); | |
6582 | ||
6583 | return 0; | |
6584 | } | |
6585 | ||
651c2466 SH |
6586 | static const struct net_device_ops e1000e_netdev_ops = { |
6587 | .ndo_open = e1000_open, | |
6588 | .ndo_stop = e1000_close, | |
00829823 | 6589 | .ndo_start_xmit = e1000_xmit_frame, |
67fd4fcb | 6590 | .ndo_get_stats64 = e1000e_get_stats64, |
ef9b965a | 6591 | .ndo_set_rx_mode = e1000e_set_rx_mode, |
651c2466 SH |
6592 | .ndo_set_mac_address = e1000_set_mac, |
6593 | .ndo_change_mtu = e1000_change_mtu, | |
6594 | .ndo_do_ioctl = e1000_ioctl, | |
6595 | .ndo_tx_timeout = e1000_tx_timeout, | |
6596 | .ndo_validate_addr = eth_validate_addr, | |
6597 | ||
651c2466 SH |
6598 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
6599 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
6600 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
6601 | .ndo_poll_controller = e1000_netpoll, | |
6602 | #endif | |
dc221294 | 6603 | .ndo_set_features = e1000_set_features, |
651c2466 SH |
6604 | }; |
6605 | ||
bc7f75fa AK |
6606 | /** |
6607 | * e1000_probe - Device Initialization Routine | |
6608 | * @pdev: PCI device information struct | |
6609 | * @ent: entry in e1000_pci_tbl | |
6610 | * | |
6611 | * Returns 0 on success, negative on failure | |
6612 | * | |
6613 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
6614 | * The OS initialization, configuring of the adapter private structure, | |
6615 | * and a hardware reset occur. | |
6616 | **/ | |
1dd06ae8 | 6617 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
bc7f75fa AK |
6618 | { |
6619 | struct net_device *netdev; | |
6620 | struct e1000_adapter *adapter; | |
6621 | struct e1000_hw *hw; | |
6622 | const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; | |
f47e81fc BB |
6623 | resource_size_t mmio_start, mmio_len; |
6624 | resource_size_t flash_start, flash_len; | |
bc7f75fa | 6625 | static int cards_found; |
78cd29d5 | 6626 | u16 aspm_disable_flag = 0; |
17e813ec | 6627 | int bars, i, err, pci_using_dac; |
bc7f75fa AK |
6628 | u16 eeprom_data = 0; |
6629 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
6630 | ||
78cd29d5 BA |
6631 | if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S) |
6632 | aspm_disable_flag = PCIE_LINK_STATE_L0S; | |
6f461f6c | 6633 | if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
78cd29d5 BA |
6634 | aspm_disable_flag |= PCIE_LINK_STATE_L1; |
6635 | if (aspm_disable_flag) | |
6636 | e1000e_disable_aspm(pdev, aspm_disable_flag); | |
6e4f6f6b | 6637 | |
f0f422e5 | 6638 | err = pci_enable_device_mem(pdev); |
bc7f75fa AK |
6639 | if (err) |
6640 | return err; | |
6641 | ||
6642 | pci_using_dac = 0; | |
718a39eb | 6643 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
bc7f75fa | 6644 | if (!err) { |
718a39eb | 6645 | pci_using_dac = 1; |
bc7f75fa | 6646 | } else { |
718a39eb | 6647 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
bc7f75fa | 6648 | if (err) { |
718a39eb RK |
6649 | dev_err(&pdev->dev, |
6650 | "No usable DMA configuration, aborting\n"); | |
6651 | goto err_dma; | |
bc7f75fa AK |
6652 | } |
6653 | } | |
6654 | ||
17e813ec BA |
6655 | bars = pci_select_bars(pdev, IORESOURCE_MEM); |
6656 | err = pci_request_selected_regions_exclusive(pdev, bars, | |
6657 | e1000e_driver_name); | |
bc7f75fa AK |
6658 | if (err) |
6659 | goto err_pci_reg; | |
6660 | ||
68eac460 | 6661 | /* AER (Advanced Error Reporting) hooks */ |
19d5afd4 | 6662 | pci_enable_pcie_error_reporting(pdev); |
68eac460 | 6663 | |
bc7f75fa | 6664 | pci_set_master(pdev); |
438b365a BA |
6665 | /* PCI config space info */ |
6666 | err = pci_save_state(pdev); | |
6667 | if (err) | |
6668 | goto err_alloc_etherdev; | |
bc7f75fa AK |
6669 | |
6670 | err = -ENOMEM; | |
6671 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
6672 | if (!netdev) | |
6673 | goto err_alloc_etherdev; | |
6674 | ||
bc7f75fa AK |
6675 | SET_NETDEV_DEV(netdev, &pdev->dev); |
6676 | ||
f85e4dfa TH |
6677 | netdev->irq = pdev->irq; |
6678 | ||
bc7f75fa AK |
6679 | pci_set_drvdata(pdev, netdev); |
6680 | adapter = netdev_priv(netdev); | |
6681 | hw = &adapter->hw; | |
6682 | adapter->netdev = netdev; | |
6683 | adapter->pdev = pdev; | |
6684 | adapter->ei = ei; | |
6685 | adapter->pba = ei->pba; | |
6686 | adapter->flags = ei->flags; | |
eb7c3adb | 6687 | adapter->flags2 = ei->flags2; |
bc7f75fa AK |
6688 | adapter->hw.adapter = adapter; |
6689 | adapter->hw.mac.type = ei->mac; | |
2adc55c9 | 6690 | adapter->max_hw_frame_size = ei->max_hw_frame_size; |
b3f4d599 | 6691 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
bc7f75fa AK |
6692 | |
6693 | mmio_start = pci_resource_start(pdev, 0); | |
6694 | mmio_len = pci_resource_len(pdev, 0); | |
6695 | ||
6696 | err = -EIO; | |
6697 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
6698 | if (!adapter->hw.hw_addr) | |
6699 | goto err_ioremap; | |
6700 | ||
6701 | if ((adapter->flags & FLAG_HAS_FLASH) && | |
6702 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
6703 | flash_start = pci_resource_start(pdev, 1); | |
6704 | flash_len = pci_resource_len(pdev, 1); | |
6705 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
6706 | if (!adapter->hw.flash_address) | |
6707 | goto err_flashmap; | |
6708 | } | |
6709 | ||
d495bcb8 BA |
6710 | /* Set default EEE advertisement */ |
6711 | if (adapter->flags2 & FLAG2_HAS_EEE) | |
6712 | adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T; | |
6713 | ||
bc7f75fa | 6714 | /* construct the net_device struct */ |
e80bd1d1 | 6715 | netdev->netdev_ops = &e1000e_netdev_ops; |
bc7f75fa | 6716 | e1000e_set_ethtool_ops(netdev); |
e80bd1d1 | 6717 | netdev->watchdog_timeo = 5 * HZ; |
c58c8a78 | 6718 | netif_napi_add(netdev, &adapter->napi, e1000e_poll, 64); |
f2315bf1 | 6719 | strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); |
bc7f75fa AK |
6720 | |
6721 | netdev->mem_start = mmio_start; | |
6722 | netdev->mem_end = mmio_start + mmio_len; | |
6723 | ||
6724 | adapter->bd_number = cards_found++; | |
6725 | ||
4662e82b BA |
6726 | e1000e_check_options(adapter); |
6727 | ||
bc7f75fa AK |
6728 | /* setup adapter struct */ |
6729 | err = e1000_sw_init(adapter); | |
6730 | if (err) | |
6731 | goto err_sw_init; | |
6732 | ||
bc7f75fa AK |
6733 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
6734 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
6735 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
6736 | ||
69e3fd8c | 6737 | err = ei->get_variants(adapter); |
bc7f75fa AK |
6738 | if (err) |
6739 | goto err_hw_init; | |
6740 | ||
4a770358 BA |
6741 | if ((adapter->flags & FLAG_IS_ICH) && |
6742 | (adapter->flags & FLAG_READ_ONLY_NVM)) | |
6743 | e1000e_write_protect_nvm_ich8lan(&adapter->hw); | |
6744 | ||
bc7f75fa AK |
6745 | hw->mac.ops.get_bus_info(&adapter->hw); |
6746 | ||
318a94d6 | 6747 | adapter->hw.phy.autoneg_wait_to_complete = 0; |
bc7f75fa AK |
6748 | |
6749 | /* Copper options */ | |
318a94d6 | 6750 | if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
bc7f75fa AK |
6751 | adapter->hw.phy.mdix = AUTO_ALL_MODES; |
6752 | adapter->hw.phy.disable_polarity_correction = 0; | |
6753 | adapter->hw.phy.ms_type = e1000_ms_hw_default; | |
6754 | } | |
6755 | ||
470a5420 | 6756 | if (hw->phy.ops.check_reset_block && hw->phy.ops.check_reset_block(hw)) |
185095fb BA |
6757 | dev_info(&pdev->dev, |
6758 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
bc7f75fa | 6759 | |
dc221294 BA |
6760 | /* Set initial default active device features */ |
6761 | netdev->features = (NETIF_F_SG | | |
f646968f PM |
6762 | NETIF_F_HW_VLAN_CTAG_RX | |
6763 | NETIF_F_HW_VLAN_CTAG_TX | | |
dc221294 BA |
6764 | NETIF_F_TSO | |
6765 | NETIF_F_TSO6 | | |
70495a50 | 6766 | NETIF_F_RXHASH | |
dc221294 BA |
6767 | NETIF_F_RXCSUM | |
6768 | NETIF_F_HW_CSUM); | |
6769 | ||
6770 | /* Set user-changeable features (subset of all device features) */ | |
6771 | netdev->hw_features = netdev->features; | |
0184039a | 6772 | netdev->hw_features |= NETIF_F_RXFCS; |
943146de | 6773 | netdev->priv_flags |= IFF_SUPP_NOFCS; |
cf955e6c | 6774 | netdev->hw_features |= NETIF_F_RXALL; |
bc7f75fa AK |
6775 | |
6776 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) | |
f646968f | 6777 | netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
bc7f75fa | 6778 | |
dc221294 BA |
6779 | netdev->vlan_features |= (NETIF_F_SG | |
6780 | NETIF_F_TSO | | |
6781 | NETIF_F_TSO6 | | |
6782 | NETIF_F_HW_CSUM); | |
a5136e23 | 6783 | |
ef9b965a JB |
6784 | netdev->priv_flags |= IFF_UNICAST_FLT; |
6785 | ||
7b872a55 | 6786 | if (pci_using_dac) { |
bc7f75fa | 6787 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
6788 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
6789 | } | |
bc7f75fa | 6790 | |
bc7f75fa AK |
6791 | if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
6792 | adapter->flags |= FLAG_MNG_PT_ENABLED; | |
6793 | ||
e921eb1a | 6794 | /* before reading the NVM, reset the controller to |
ad68076e BA |
6795 | * put the device in a known good starting state |
6796 | */ | |
bc7f75fa AK |
6797 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
6798 | ||
e921eb1a | 6799 | /* systems with ASPM and others may see the checksum fail on the first |
bc7f75fa AK |
6800 | * attempt. Let's give it a few tries |
6801 | */ | |
6802 | for (i = 0;; i++) { | |
6803 | if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) | |
6804 | break; | |
6805 | if (i == 2) { | |
185095fb | 6806 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
bc7f75fa AK |
6807 | err = -EIO; |
6808 | goto err_eeprom; | |
6809 | } | |
6810 | } | |
6811 | ||
10aa4c04 AK |
6812 | e1000_eeprom_checks(adapter); |
6813 | ||
608f8a0d | 6814 | /* copy the MAC address */ |
bc7f75fa | 6815 | if (e1000e_read_mac_addr(&adapter->hw)) |
185095fb BA |
6816 | dev_err(&pdev->dev, |
6817 | "NVM Read Error while reading MAC address\n"); | |
bc7f75fa AK |
6818 | |
6819 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
bc7f75fa | 6820 | |
aaeb6cdf | 6821 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
185095fb | 6822 | dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", |
aaeb6cdf | 6823 | netdev->dev_addr); |
bc7f75fa AK |
6824 | err = -EIO; |
6825 | goto err_eeprom; | |
6826 | } | |
6827 | ||
6828 | init_timer(&adapter->watchdog_timer); | |
c061b18d | 6829 | adapter->watchdog_timer.function = e1000_watchdog; |
53aa82da | 6830 | adapter->watchdog_timer.data = (unsigned long)adapter; |
bc7f75fa AK |
6831 | |
6832 | init_timer(&adapter->phy_info_timer); | |
c061b18d | 6833 | adapter->phy_info_timer.function = e1000_update_phy_info; |
53aa82da | 6834 | adapter->phy_info_timer.data = (unsigned long)adapter; |
bc7f75fa AK |
6835 | |
6836 | INIT_WORK(&adapter->reset_task, e1000_reset_task); | |
6837 | INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); | |
a8f88ff5 JB |
6838 | INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
6839 | INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); | |
41cec6f1 | 6840 | INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
bc7f75fa | 6841 | |
bc7f75fa AK |
6842 | /* Initialize link parameters. User can change them with ethtool */ |
6843 | adapter->hw.mac.autoneg = 1; | |
3db1cd5c | 6844 | adapter->fc_autoneg = true; |
5c48ef3e BA |
6845 | adapter->hw.fc.requested_mode = e1000_fc_default; |
6846 | adapter->hw.fc.current_mode = e1000_fc_default; | |
bc7f75fa AK |
6847 | adapter->hw.phy.autoneg_advertised = 0x2f; |
6848 | ||
e921eb1a | 6849 | /* Initial Wake on LAN setting - If APM wake is enabled in |
bc7f75fa AK |
6850 | * the EEPROM, enable the ACPI Magic Packet filter |
6851 | */ | |
6852 | if (adapter->flags & FLAG_APME_IN_WUC) { | |
6853 | /* APME bit in EEPROM is mapped to WUC.APME */ | |
6854 | eeprom_data = er32(WUC); | |
6855 | eeprom_apme_mask = E1000_WUC_APME; | |
4def99bb BA |
6856 | if ((hw->mac.type > e1000_ich10lan) && |
6857 | (eeprom_data & E1000_WUC_PHY_WAKE)) | |
a4f58f54 | 6858 | adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; |
bc7f75fa AK |
6859 | } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
6860 | if (adapter->flags & FLAG_APME_CHECK_PORT_B && | |
6861 | (adapter->hw.bus.func == 1)) | |
3d3a1676 BA |
6862 | e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_B, |
6863 | 1, &eeprom_data); | |
bc7f75fa | 6864 | else |
3d3a1676 BA |
6865 | e1000_read_nvm(&adapter->hw, NVM_INIT_CONTROL3_PORT_A, |
6866 | 1, &eeprom_data); | |
bc7f75fa AK |
6867 | } |
6868 | ||
6869 | /* fetch WoL from EEPROM */ | |
6870 | if (eeprom_data & eeprom_apme_mask) | |
6871 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
6872 | ||
e921eb1a | 6873 | /* now that we have the eeprom settings, apply the special cases |
bc7f75fa AK |
6874 | * where the eeprom may be wrong or the board simply won't support |
6875 | * wake on lan on a particular port | |
6876 | */ | |
6877 | if (!(adapter->flags & FLAG_HAS_WOL)) | |
6878 | adapter->eeprom_wol = 0; | |
6879 | ||
6880 | /* initialize the wol settings based on the eeprom settings */ | |
6881 | adapter->wol = adapter->eeprom_wol; | |
66148bab KK |
6882 | |
6883 | /* make sure adapter isn't asleep if manageability is enabled */ | |
6884 | if (adapter->wol || (adapter->flags & FLAG_MNG_PT_ENABLED) || | |
6885 | (hw->mac.ops.check_mng_mode(hw))) | |
6886 | device_wakeup_enable(&pdev->dev); | |
bc7f75fa | 6887 | |
84527590 BA |
6888 | /* save off EEPROM version number */ |
6889 | e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); | |
6890 | ||
bc7f75fa AK |
6891 | /* reset the hardware with the new settings */ |
6892 | e1000e_reset(adapter); | |
6893 | ||
e921eb1a | 6894 | /* If the controller has AMT, do not set DRV_LOAD until the interface |
bc7f75fa | 6895 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
6896 | * under the control of the driver. |
6897 | */ | |
c43bc57e | 6898 | if (!(adapter->flags & FLAG_HAS_AMT)) |
31dbe5b4 | 6899 | e1000e_get_hw_control(adapter); |
bc7f75fa | 6900 | |
f2315bf1 | 6901 | strlcpy(netdev->name, "eth%d", sizeof(netdev->name)); |
bc7f75fa AK |
6902 | err = register_netdev(netdev); |
6903 | if (err) | |
6904 | goto err_register; | |
6905 | ||
9c563d20 JB |
6906 | /* carrier off reporting is important to ethtool even BEFORE open */ |
6907 | netif_carrier_off(netdev); | |
6908 | ||
d89777bf BA |
6909 | /* init PTP hardware clock */ |
6910 | e1000e_ptp_init(adapter); | |
6911 | ||
bc7f75fa AK |
6912 | e1000_print_device_info(adapter); |
6913 | ||
f3ec4f87 AS |
6914 | if (pci_dev_run_wake(pdev)) |
6915 | pm_runtime_put_noidle(&pdev->dev); | |
23606cf5 | 6916 | |
bc7f75fa AK |
6917 | return 0; |
6918 | ||
6919 | err_register: | |
c43bc57e | 6920 | if (!(adapter->flags & FLAG_HAS_AMT)) |
31dbe5b4 | 6921 | e1000e_release_hw_control(adapter); |
bc7f75fa | 6922 | err_eeprom: |
470a5420 | 6923 | if (hw->phy.ops.check_reset_block && !hw->phy.ops.check_reset_block(hw)) |
bc7f75fa | 6924 | e1000_phy_hw_reset(&adapter->hw); |
c43bc57e | 6925 | err_hw_init: |
bc7f75fa AK |
6926 | kfree(adapter->tx_ring); |
6927 | kfree(adapter->rx_ring); | |
6928 | err_sw_init: | |
c43bc57e JB |
6929 | if (adapter->hw.flash_address) |
6930 | iounmap(adapter->hw.flash_address); | |
e82f54ba | 6931 | e1000e_reset_interrupt_capability(adapter); |
c43bc57e | 6932 | err_flashmap: |
bc7f75fa AK |
6933 | iounmap(adapter->hw.hw_addr); |
6934 | err_ioremap: | |
6935 | free_netdev(netdev); | |
6936 | err_alloc_etherdev: | |
f0f422e5 | 6937 | pci_release_selected_regions(pdev, |
f0ff4398 | 6938 | pci_select_bars(pdev, IORESOURCE_MEM)); |
bc7f75fa AK |
6939 | err_pci_reg: |
6940 | err_dma: | |
6941 | pci_disable_device(pdev); | |
6942 | return err; | |
6943 | } | |
6944 | ||
6945 | /** | |
6946 | * e1000_remove - Device Removal Routine | |
6947 | * @pdev: PCI device information struct | |
6948 | * | |
6949 | * e1000_remove is called by the PCI subsystem to alert the driver | |
6950 | * that it should release a PCI device. The could be caused by a | |
6951 | * Hot-Plug event, or because the driver is going to be removed from | |
6952 | * memory. | |
6953 | **/ | |
9f9a12f8 | 6954 | static void e1000_remove(struct pci_dev *pdev) |
bc7f75fa AK |
6955 | { |
6956 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6957 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 RW |
6958 | bool down = test_bit(__E1000_DOWN, &adapter->state); |
6959 | ||
d89777bf BA |
6960 | e1000e_ptp_remove(adapter); |
6961 | ||
e921eb1a | 6962 | /* The timers may be rescheduled, so explicitly disable them |
23f333a2 | 6963 | * from being rescheduled. |
ad68076e | 6964 | */ |
23606cf5 RW |
6965 | if (!down) |
6966 | set_bit(__E1000_DOWN, &adapter->state); | |
bc7f75fa AK |
6967 | del_timer_sync(&adapter->watchdog_timer); |
6968 | del_timer_sync(&adapter->phy_info_timer); | |
6969 | ||
41cec6f1 BA |
6970 | cancel_work_sync(&adapter->reset_task); |
6971 | cancel_work_sync(&adapter->watchdog_task); | |
6972 | cancel_work_sync(&adapter->downshift_task); | |
6973 | cancel_work_sync(&adapter->update_phy_task); | |
6974 | cancel_work_sync(&adapter->print_hang_task); | |
bc7f75fa | 6975 | |
b67e1913 BA |
6976 | if (adapter->flags & FLAG_HAS_HW_TIMESTAMP) { |
6977 | cancel_work_sync(&adapter->tx_hwtstamp_work); | |
6978 | if (adapter->tx_hwtstamp_skb) { | |
6979 | dev_kfree_skb_any(adapter->tx_hwtstamp_skb); | |
6980 | adapter->tx_hwtstamp_skb = NULL; | |
6981 | } | |
6982 | } | |
6983 | ||
23606cf5 RW |
6984 | /* Don't lie to e1000_close() down the road. */ |
6985 | if (!down) | |
6986 | clear_bit(__E1000_DOWN, &adapter->state); | |
17f208de BA |
6987 | unregister_netdev(netdev); |
6988 | ||
f3ec4f87 AS |
6989 | if (pci_dev_run_wake(pdev)) |
6990 | pm_runtime_get_noresume(&pdev->dev); | |
23606cf5 | 6991 | |
e921eb1a | 6992 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
ad68076e BA |
6993 | * would have already happened in close and is redundant. |
6994 | */ | |
31dbe5b4 | 6995 | e1000e_release_hw_control(adapter); |
bc7f75fa | 6996 | |
4662e82b | 6997 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
6998 | kfree(adapter->tx_ring); |
6999 | kfree(adapter->rx_ring); | |
7000 | ||
7001 | iounmap(adapter->hw.hw_addr); | |
7002 | if (adapter->hw.flash_address) | |
7003 | iounmap(adapter->hw.flash_address); | |
f0f422e5 | 7004 | pci_release_selected_regions(pdev, |
f0ff4398 | 7005 | pci_select_bars(pdev, IORESOURCE_MEM)); |
bc7f75fa AK |
7006 | |
7007 | free_netdev(netdev); | |
7008 | ||
111b9dc5 | 7009 | /* AER disable */ |
19d5afd4 | 7010 | pci_disable_pcie_error_reporting(pdev); |
111b9dc5 | 7011 | |
bc7f75fa AK |
7012 | pci_disable_device(pdev); |
7013 | } | |
7014 | ||
7015 | /* PCI Error Recovery (ERS) */ | |
3646f0e5 | 7016 | static const struct pci_error_handlers e1000_err_handler = { |
bc7f75fa AK |
7017 | .error_detected = e1000_io_error_detected, |
7018 | .slot_reset = e1000_io_slot_reset, | |
7019 | .resume = e1000_io_resume, | |
7020 | }; | |
7021 | ||
a3aa1884 | 7022 | static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
bc7f75fa AK |
7023 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
7024 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, | |
7025 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, | |
c29c3ba5 BA |
7026 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), |
7027 | board_82571 }, | |
bc7f75fa AK |
7028 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, |
7029 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, | |
040babf9 AK |
7030 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
7031 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, | |
7032 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, | |
ad68076e | 7033 | |
bc7f75fa AK |
7034 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
7035 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, | |
7036 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, | |
7037 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, | |
ad68076e | 7038 | |
bc7f75fa AK |
7039 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
7040 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, | |
7041 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, | |
ad68076e | 7042 | |
4662e82b | 7043 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
bef28b11 | 7044 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
8c81c9c3 | 7045 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
4662e82b | 7046 | |
bc7f75fa AK |
7047 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
7048 | board_80003es2lan }, | |
7049 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), | |
7050 | board_80003es2lan }, | |
7051 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), | |
7052 | board_80003es2lan }, | |
7053 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), | |
7054 | board_80003es2lan }, | |
ad68076e | 7055 | |
bc7f75fa AK |
7056 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
7057 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, | |
7058 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, | |
7059 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, | |
7060 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, | |
7061 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, | |
7062 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, | |
9e135a2e | 7063 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
ad68076e | 7064 | |
bc7f75fa AK |
7065 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
7066 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, | |
7067 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, | |
7068 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, | |
7069 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, | |
2f15f9d6 | 7070 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
97ac8cae BA |
7071 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
7072 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, | |
7073 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, | |
7074 | ||
7075 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, | |
7076 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, | |
7077 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, | |
bc7f75fa | 7078 | |
f4187b56 BA |
7079 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
7080 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, | |
10df0b91 | 7081 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
f4187b56 | 7082 | |
a4f58f54 BA |
7083 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
7084 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, | |
7085 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, | |
7086 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, | |
7087 | ||
d3738bb8 BA |
7088 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
7089 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, | |
7090 | ||
2fbe4526 BA |
7091 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_LM), board_pch_lpt }, |
7092 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPT_I217_V), board_pch_lpt }, | |
16e310ae BA |
7093 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_LM), board_pch_lpt }, |
7094 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_LPTLP_I218_V), board_pch_lpt }, | |
91a3d82f BA |
7095 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM2), board_pch_lpt }, |
7096 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V2), board_pch_lpt }, | |
7097 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_LM3), board_pch_lpt }, | |
7098 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_I218_V3), board_pch_lpt }, | |
2fbe4526 | 7099 | |
f36bb6ca | 7100 | { 0, 0, 0, 0, 0, 0, 0 } /* terminate list */ |
bc7f75fa AK |
7101 | }; |
7102 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
7103 | ||
23606cf5 | 7104 | static const struct dev_pm_ops e1000_pm_ops = { |
72f72dcc | 7105 | #ifdef CONFIG_PM_SLEEP |
28002099 DE |
7106 | .suspend = e1000e_pm_suspend, |
7107 | .resume = e1000e_pm_resume, | |
7108 | .freeze = e1000e_pm_freeze, | |
7109 | .thaw = e1000e_pm_thaw, | |
7110 | .poweroff = e1000e_pm_suspend, | |
7111 | .restore = e1000e_pm_resume, | |
72f72dcc | 7112 | #endif |
63eb48f1 DE |
7113 | SET_RUNTIME_PM_OPS(e1000e_pm_runtime_suspend, e1000e_pm_runtime_resume, |
7114 | e1000e_pm_runtime_idle) | |
23606cf5 RW |
7115 | }; |
7116 | ||
bc7f75fa AK |
7117 | /* PCI Device API Driver */ |
7118 | static struct pci_driver e1000_driver = { | |
7119 | .name = e1000e_driver_name, | |
7120 | .id_table = e1000_pci_tbl, | |
7121 | .probe = e1000_probe, | |
9f9a12f8 | 7122 | .remove = e1000_remove, |
f36bb6ca BA |
7123 | .driver = { |
7124 | .pm = &e1000_pm_ops, | |
7125 | }, | |
bc7f75fa AK |
7126 | .shutdown = e1000_shutdown, |
7127 | .err_handler = &e1000_err_handler | |
7128 | }; | |
7129 | ||
7130 | /** | |
7131 | * e1000_init_module - Driver Registration Routine | |
7132 | * | |
7133 | * e1000_init_module is the first routine called when the driver is | |
7134 | * loaded. All it does is register with the PCI subsystem. | |
7135 | **/ | |
7136 | static int __init e1000_init_module(void) | |
7137 | { | |
7138 | int ret; | |
8544b9f7 BA |
7139 | pr_info("Intel(R) PRO/1000 Network Driver - %s\n", |
7140 | e1000e_driver_version); | |
e78b80b1 | 7141 | pr_info("Copyright(c) 1999 - 2014 Intel Corporation.\n"); |
bc7f75fa | 7142 | ret = pci_register_driver(&e1000_driver); |
53ec5498 | 7143 | |
bc7f75fa AK |
7144 | return ret; |
7145 | } | |
7146 | module_init(e1000_init_module); | |
7147 | ||
7148 | /** | |
7149 | * e1000_exit_module - Driver Exit Cleanup Routine | |
7150 | * | |
7151 | * e1000_exit_module is called just before the driver is removed | |
7152 | * from memory. | |
7153 | **/ | |
7154 | static void __exit e1000_exit_module(void) | |
7155 | { | |
7156 | pci_unregister_driver(&e1000_driver); | |
7157 | } | |
7158 | module_exit(e1000_exit_module); | |
7159 | ||
bc7f75fa AK |
7160 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); |
7161 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
7162 | MODULE_LICENSE("GPL"); | |
7163 | MODULE_VERSION(DRV_VERSION); | |
7164 | ||
06c24b91 | 7165 | /* netdev.c */ |