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1da177e4 LT |
1 | /************************************************************************ |
2 | * s2io.c: A Linux PCI-X Ethernet driver for S2IO 10GbE Server NIC | |
3 | * Copyright(c) 2002-2005 Neterion Inc. | |
4 | ||
5 | * This software may be used and distributed according to the terms of | |
6 | * the GNU General Public License (GPL), incorporated herein by reference. | |
7 | * Drivers based on or derived from this code fall under the GPL and must | |
8 | * retain the authorship, copyright and license notice. This file is not | |
9 | * a complete program and may only be used when the entire operating | |
10 | * system is licensed under the GPL. | |
11 | * See the file COPYING in this distribution for more information. | |
12 | * | |
13 | * Credits: | |
20346722 | 14 | * Jeff Garzik : For pointing out the improper error condition |
15 | * check in the s2io_xmit routine and also some | |
16 | * issues in the Tx watch dog function. Also for | |
17 | * patiently answering all those innumerable | |
1da177e4 LT |
18 | * questions regaring the 2.6 porting issues. |
19 | * Stephen Hemminger : Providing proper 2.6 porting mechanism for some | |
20 | * macros available only in 2.6 Kernel. | |
20346722 | 21 | * Francois Romieu : For pointing out all code part that were |
1da177e4 | 22 | * deprecated and also styling related comments. |
20346722 | 23 | * Grant Grundler : For helping me get rid of some Architecture |
1da177e4 LT |
24 | * dependent code. |
25 | * Christopher Hellwig : Some more 2.6 specific issues in the driver. | |
20346722 | 26 | * |
1da177e4 LT |
27 | * The module loadable parameters that are supported by the driver and a brief |
28 | * explaination of all the variables. | |
20346722 | 29 | * rx_ring_num : This can be used to program the number of receive rings used |
30 | * in the driver. | |
31 | * rx_ring_len: This defines the number of descriptors each ring can have. This | |
1da177e4 LT |
32 | * is also an array of size 8. |
33 | * tx_fifo_num: This defines the number of Tx FIFOs thats used int the driver. | |
20346722 | 34 | * tx_fifo_len: This too is an array of 8. Each element defines the number of |
1da177e4 | 35 | * Tx descriptors that can be associated with each corresponding FIFO. |
1da177e4 LT |
36 | ************************************************************************/ |
37 | ||
38 | #include <linux/config.h> | |
39 | #include <linux/module.h> | |
40 | #include <linux/types.h> | |
41 | #include <linux/errno.h> | |
42 | #include <linux/ioport.h> | |
43 | #include <linux/pci.h> | |
1e7f0bd8 | 44 | #include <linux/dma-mapping.h> |
1da177e4 LT |
45 | #include <linux/kernel.h> |
46 | #include <linux/netdevice.h> | |
47 | #include <linux/etherdevice.h> | |
48 | #include <linux/skbuff.h> | |
49 | #include <linux/init.h> | |
50 | #include <linux/delay.h> | |
51 | #include <linux/stddef.h> | |
52 | #include <linux/ioctl.h> | |
53 | #include <linux/timex.h> | |
54 | #include <linux/sched.h> | |
55 | #include <linux/ethtool.h> | |
56 | #include <linux/version.h> | |
57 | #include <linux/workqueue.h> | |
58 | ||
1da177e4 LT |
59 | #include <asm/system.h> |
60 | #include <asm/uaccess.h> | |
20346722 | 61 | #include <asm/io.h> |
1da177e4 LT |
62 | |
63 | /* local include */ | |
64 | #include "s2io.h" | |
65 | #include "s2io-regs.h" | |
66 | ||
67 | /* S2io Driver name & version. */ | |
20346722 | 68 | static char s2io_driver_name[] = "Neterion"; |
69 | static char s2io_driver_version[] = "Version 1.7.7"; | |
1da177e4 | 70 | |
5e25b9dd | 71 | static inline int RXD_IS_UP2DT(RxD_t *rxdp) |
72 | { | |
73 | int ret; | |
74 | ||
75 | ret = ((!(rxdp->Control_1 & RXD_OWN_XENA)) && | |
76 | (GET_RXD_MARKER(rxdp->Control_2) != THE_RXD_MARK)); | |
77 | ||
78 | return ret; | |
79 | } | |
80 | ||
20346722 | 81 | /* |
1da177e4 LT |
82 | * Cards with following subsystem_id have a link state indication |
83 | * problem, 600B, 600C, 600D, 640B, 640C and 640D. | |
84 | * macro below identifies these cards given the subsystem_id. | |
85 | */ | |
86 | #define CARDS_WITH_FAULTY_LINK_INDICATORS(subid) \ | |
87 | (((subid >= 0x600B) && (subid <= 0x600D)) || \ | |
88 | ((subid >= 0x640B) && (subid <= 0x640D))) ? 1 : 0 | |
89 | ||
90 | #define LINK_IS_UP(val64) (!(val64 & (ADAPTER_STATUS_RMAC_REMOTE_FAULT | \ | |
91 | ADAPTER_STATUS_RMAC_LOCAL_FAULT))) | |
92 | #define TASKLET_IN_USE test_and_set_bit(0, (&sp->tasklet_status)) | |
93 | #define PANIC 1 | |
94 | #define LOW 2 | |
95 | static inline int rx_buffer_level(nic_t * sp, int rxb_size, int ring) | |
96 | { | |
97 | int level = 0; | |
20346722 | 98 | mac_info_t *mac_control; |
99 | ||
100 | mac_control = &sp->mac_control; | |
101 | if ((mac_control->rings[ring].pkt_cnt - rxb_size) > 16) { | |
1da177e4 | 102 | level = LOW; |
20346722 | 103 | if ((mac_control->rings[ring].pkt_cnt - rxb_size) < |
104 | MAX_RXDS_PER_BLOCK) { | |
1da177e4 LT |
105 | level = PANIC; |
106 | } | |
107 | } | |
108 | ||
109 | return level; | |
110 | } | |
111 | ||
112 | /* Ethtool related variables and Macros. */ | |
113 | static char s2io_gstrings[][ETH_GSTRING_LEN] = { | |
114 | "Register test\t(offline)", | |
115 | "Eeprom test\t(offline)", | |
116 | "Link test\t(online)", | |
117 | "RLDRAM test\t(offline)", | |
118 | "BIST Test\t(offline)" | |
119 | }; | |
120 | ||
121 | static char ethtool_stats_keys[][ETH_GSTRING_LEN] = { | |
122 | {"tmac_frms"}, | |
123 | {"tmac_data_octets"}, | |
124 | {"tmac_drop_frms"}, | |
125 | {"tmac_mcst_frms"}, | |
126 | {"tmac_bcst_frms"}, | |
127 | {"tmac_pause_ctrl_frms"}, | |
128 | {"tmac_any_err_frms"}, | |
129 | {"tmac_vld_ip_octets"}, | |
130 | {"tmac_vld_ip"}, | |
131 | {"tmac_drop_ip"}, | |
132 | {"tmac_icmp"}, | |
133 | {"tmac_rst_tcp"}, | |
134 | {"tmac_tcp"}, | |
135 | {"tmac_udp"}, | |
136 | {"rmac_vld_frms"}, | |
137 | {"rmac_data_octets"}, | |
138 | {"rmac_fcs_err_frms"}, | |
139 | {"rmac_drop_frms"}, | |
140 | {"rmac_vld_mcst_frms"}, | |
141 | {"rmac_vld_bcst_frms"}, | |
142 | {"rmac_in_rng_len_err_frms"}, | |
143 | {"rmac_long_frms"}, | |
144 | {"rmac_pause_ctrl_frms"}, | |
145 | {"rmac_discarded_frms"}, | |
146 | {"rmac_usized_frms"}, | |
147 | {"rmac_osized_frms"}, | |
148 | {"rmac_frag_frms"}, | |
149 | {"rmac_jabber_frms"}, | |
150 | {"rmac_ip"}, | |
151 | {"rmac_ip_octets"}, | |
152 | {"rmac_hdr_err_ip"}, | |
153 | {"rmac_drop_ip"}, | |
154 | {"rmac_icmp"}, | |
155 | {"rmac_tcp"}, | |
156 | {"rmac_udp"}, | |
157 | {"rmac_err_drp_udp"}, | |
158 | {"rmac_pause_cnt"}, | |
159 | {"rmac_accepted_ip"}, | |
160 | {"rmac_err_tcp"}, | |
7ba013ac | 161 | {"\n DRIVER STATISTICS"}, |
162 | {"single_bit_ecc_errs"}, | |
163 | {"double_bit_ecc_errs"}, | |
1da177e4 LT |
164 | }; |
165 | ||
166 | #define S2IO_STAT_LEN sizeof(ethtool_stats_keys)/ ETH_GSTRING_LEN | |
167 | #define S2IO_STAT_STRINGS_LEN S2IO_STAT_LEN * ETH_GSTRING_LEN | |
168 | ||
169 | #define S2IO_TEST_LEN sizeof(s2io_gstrings) / ETH_GSTRING_LEN | |
170 | #define S2IO_STRINGS_LEN S2IO_TEST_LEN * ETH_GSTRING_LEN | |
171 | ||
20346722 | 172 | /* |
1da177e4 LT |
173 | * Constants to be programmed into the Xena's registers, to configure |
174 | * the XAUI. | |
175 | */ | |
176 | ||
177 | #define SWITCH_SIGN 0xA5A5A5A5A5A5A5A5ULL | |
178 | #define END_SIGN 0x0 | |
179 | ||
180 | static u64 default_mdio_cfg[] = { | |
181 | /* Reset PMA PLL */ | |
182 | 0xC001010000000000ULL, 0xC0010100000000E0ULL, | |
183 | 0xC0010100008000E4ULL, | |
184 | /* Remove Reset from PMA PLL */ | |
185 | 0xC001010000000000ULL, 0xC0010100000000E0ULL, | |
186 | 0xC0010100000000E4ULL, | |
187 | END_SIGN | |
188 | }; | |
189 | ||
190 | static u64 default_dtx_cfg[] = { | |
191 | 0x8000051500000000ULL, 0x80000515000000E0ULL, | |
192 | 0x80000515D93500E4ULL, 0x8001051500000000ULL, | |
193 | 0x80010515000000E0ULL, 0x80010515001E00E4ULL, | |
194 | 0x8002051500000000ULL, 0x80020515000000E0ULL, | |
195 | 0x80020515F21000E4ULL, | |
196 | /* Set PADLOOPBACKN */ | |
197 | 0x8002051500000000ULL, 0x80020515000000E0ULL, | |
198 | 0x80020515B20000E4ULL, 0x8003051500000000ULL, | |
199 | 0x80030515000000E0ULL, 0x80030515B20000E4ULL, | |
200 | 0x8004051500000000ULL, 0x80040515000000E0ULL, | |
201 | 0x80040515B20000E4ULL, 0x8005051500000000ULL, | |
202 | 0x80050515000000E0ULL, 0x80050515B20000E4ULL, | |
203 | SWITCH_SIGN, | |
204 | /* Remove PADLOOPBACKN */ | |
205 | 0x8002051500000000ULL, 0x80020515000000E0ULL, | |
206 | 0x80020515F20000E4ULL, 0x8003051500000000ULL, | |
207 | 0x80030515000000E0ULL, 0x80030515F20000E4ULL, | |
208 | 0x8004051500000000ULL, 0x80040515000000E0ULL, | |
209 | 0x80040515F20000E4ULL, 0x8005051500000000ULL, | |
210 | 0x80050515000000E0ULL, 0x80050515F20000E4ULL, | |
211 | END_SIGN | |
212 | }; | |
213 | ||
20346722 | 214 | /* |
1da177e4 LT |
215 | * Constants for Fixing the MacAddress problem seen mostly on |
216 | * Alpha machines. | |
217 | */ | |
218 | static u64 fix_mac[] = { | |
219 | 0x0060000000000000ULL, 0x0060600000000000ULL, | |
220 | 0x0040600000000000ULL, 0x0000600000000000ULL, | |
221 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
222 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
223 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
224 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
225 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
226 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
227 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
228 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
229 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
230 | 0x0020600000000000ULL, 0x0060600000000000ULL, | |
231 | 0x0020600000000000ULL, 0x0000600000000000ULL, | |
232 | 0x0040600000000000ULL, 0x0060600000000000ULL, | |
233 | END_SIGN | |
234 | }; | |
235 | ||
236 | /* Module Loadable parameters. */ | |
237 | static unsigned int tx_fifo_num = 1; | |
238 | static unsigned int tx_fifo_len[MAX_TX_FIFOS] = | |
239 | {[0 ...(MAX_TX_FIFOS - 1)] = 0 }; | |
240 | static unsigned int rx_ring_num = 1; | |
241 | static unsigned int rx_ring_sz[MAX_RX_RINGS] = | |
242 | {[0 ...(MAX_RX_RINGS - 1)] = 0 }; | |
20346722 | 243 | static unsigned int rts_frm_len[MAX_RX_RINGS] = |
244 | {[0 ...(MAX_RX_RINGS - 1)] = 0 }; | |
5e25b9dd | 245 | static unsigned int use_continuous_tx_intrs = 1; |
1da177e4 LT |
246 | static unsigned int rmac_pause_time = 65535; |
247 | static unsigned int mc_pause_threshold_q0q3 = 187; | |
248 | static unsigned int mc_pause_threshold_q4q7 = 187; | |
249 | static unsigned int shared_splits; | |
250 | static unsigned int tmac_util_period = 5; | |
251 | static unsigned int rmac_util_period = 5; | |
252 | #ifndef CONFIG_S2IO_NAPI | |
253 | static unsigned int indicate_max_pkts; | |
254 | #endif | |
255 | ||
20346722 | 256 | /* |
1da177e4 | 257 | * S2IO device table. |
20346722 | 258 | * This table lists all the devices that this driver supports. |
1da177e4 LT |
259 | */ |
260 | static struct pci_device_id s2io_tbl[] __devinitdata = { | |
261 | {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_WIN, | |
262 | PCI_ANY_ID, PCI_ANY_ID}, | |
263 | {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_UNI, | |
264 | PCI_ANY_ID, PCI_ANY_ID}, | |
265 | {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_WIN, | |
20346722 | 266 | PCI_ANY_ID, PCI_ANY_ID}, |
267 | {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_UNI, | |
268 | PCI_ANY_ID, PCI_ANY_ID}, | |
1da177e4 LT |
269 | {0,} |
270 | }; | |
271 | ||
272 | MODULE_DEVICE_TABLE(pci, s2io_tbl); | |
273 | ||
274 | static struct pci_driver s2io_driver = { | |
275 | .name = "S2IO", | |
276 | .id_table = s2io_tbl, | |
277 | .probe = s2io_init_nic, | |
278 | .remove = __devexit_p(s2io_rem_nic), | |
279 | }; | |
280 | ||
281 | /* A simplifier macro used both by init and free shared_mem Fns(). */ | |
282 | #define TXD_MEM_PAGE_CNT(len, per_each) ((len+per_each - 1) / per_each) | |
283 | ||
284 | /** | |
285 | * init_shared_mem - Allocation and Initialization of Memory | |
286 | * @nic: Device private variable. | |
20346722 | 287 | * Description: The function allocates all the memory areas shared |
288 | * between the NIC and the driver. This includes Tx descriptors, | |
1da177e4 LT |
289 | * Rx descriptors and the statistics block. |
290 | */ | |
291 | ||
292 | static int init_shared_mem(struct s2io_nic *nic) | |
293 | { | |
294 | u32 size; | |
295 | void *tmp_v_addr, *tmp_v_addr_next; | |
296 | dma_addr_t tmp_p_addr, tmp_p_addr_next; | |
297 | RxD_block_t *pre_rxd_blk = NULL; | |
20346722 | 298 | int i, j, blk_cnt, rx_sz, tx_sz; |
1da177e4 LT |
299 | int lst_size, lst_per_page; |
300 | struct net_device *dev = nic->dev; | |
301 | #ifdef CONFIG_2BUFF_MODE | |
20346722 | 302 | u64 tmp; |
1da177e4 LT |
303 | buffAdd_t *ba; |
304 | #endif | |
305 | ||
306 | mac_info_t *mac_control; | |
307 | struct config_param *config; | |
308 | ||
309 | mac_control = &nic->mac_control; | |
310 | config = &nic->config; | |
311 | ||
312 | ||
313 | /* Allocation and initialization of TXDLs in FIOFs */ | |
314 | size = 0; | |
315 | for (i = 0; i < config->tx_fifo_num; i++) { | |
316 | size += config->tx_cfg[i].fifo_len; | |
317 | } | |
318 | if (size > MAX_AVAILABLE_TXDS) { | |
319 | DBG_PRINT(ERR_DBG, "%s: Total number of Tx FIFOs ", | |
320 | dev->name); | |
321 | DBG_PRINT(ERR_DBG, "exceeds the maximum value "); | |
322 | DBG_PRINT(ERR_DBG, "that can be used\n"); | |
323 | return FAILURE; | |
324 | } | |
325 | ||
326 | lst_size = (sizeof(TxD_t) * config->max_txds); | |
20346722 | 327 | tx_sz = lst_size * size; |
1da177e4 LT |
328 | lst_per_page = PAGE_SIZE / lst_size; |
329 | ||
330 | for (i = 0; i < config->tx_fifo_num; i++) { | |
331 | int fifo_len = config->tx_cfg[i].fifo_len; | |
332 | int list_holder_size = fifo_len * sizeof(list_info_hold_t); | |
20346722 | 333 | mac_control->fifos[i].list_info = kmalloc(list_holder_size, |
334 | GFP_KERNEL); | |
335 | if (!mac_control->fifos[i].list_info) { | |
1da177e4 LT |
336 | DBG_PRINT(ERR_DBG, |
337 | "Malloc failed for list_info\n"); | |
338 | return -ENOMEM; | |
339 | } | |
20346722 | 340 | memset(mac_control->fifos[i].list_info, 0, list_holder_size); |
1da177e4 LT |
341 | } |
342 | for (i = 0; i < config->tx_fifo_num; i++) { | |
343 | int page_num = TXD_MEM_PAGE_CNT(config->tx_cfg[i].fifo_len, | |
344 | lst_per_page); | |
20346722 | 345 | mac_control->fifos[i].tx_curr_put_info.offset = 0; |
346 | mac_control->fifos[i].tx_curr_put_info.fifo_len = | |
1da177e4 | 347 | config->tx_cfg[i].fifo_len - 1; |
20346722 | 348 | mac_control->fifos[i].tx_curr_get_info.offset = 0; |
349 | mac_control->fifos[i].tx_curr_get_info.fifo_len = | |
1da177e4 | 350 | config->tx_cfg[i].fifo_len - 1; |
20346722 | 351 | mac_control->fifos[i].fifo_no = i; |
352 | mac_control->fifos[i].nic = nic; | |
353 | mac_control->fifos[i].max_txds = MAX_SKB_FRAGS; | |
354 | ||
1da177e4 LT |
355 | for (j = 0; j < page_num; j++) { |
356 | int k = 0; | |
357 | dma_addr_t tmp_p; | |
358 | void *tmp_v; | |
359 | tmp_v = pci_alloc_consistent(nic->pdev, | |
360 | PAGE_SIZE, &tmp_p); | |
361 | if (!tmp_v) { | |
362 | DBG_PRINT(ERR_DBG, | |
363 | "pci_alloc_consistent "); | |
364 | DBG_PRINT(ERR_DBG, "failed for TxDL\n"); | |
365 | return -ENOMEM; | |
366 | } | |
367 | while (k < lst_per_page) { | |
368 | int l = (j * lst_per_page) + k; | |
369 | if (l == config->tx_cfg[i].fifo_len) | |
20346722 | 370 | break; |
371 | mac_control->fifos[i].list_info[l].list_virt_addr = | |
1da177e4 | 372 | tmp_v + (k * lst_size); |
20346722 | 373 | mac_control->fifos[i].list_info[l].list_phy_addr = |
1da177e4 LT |
374 | tmp_p + (k * lst_size); |
375 | k++; | |
376 | } | |
377 | } | |
378 | } | |
1da177e4 LT |
379 | |
380 | /* Allocation and initialization of RXDs in Rings */ | |
381 | size = 0; | |
382 | for (i = 0; i < config->rx_ring_num; i++) { | |
383 | if (config->rx_cfg[i].num_rxd % (MAX_RXDS_PER_BLOCK + 1)) { | |
384 | DBG_PRINT(ERR_DBG, "%s: RxD count of ", dev->name); | |
385 | DBG_PRINT(ERR_DBG, "Ring%d is not a multiple of ", | |
386 | i); | |
387 | DBG_PRINT(ERR_DBG, "RxDs per Block"); | |
388 | return FAILURE; | |
389 | } | |
390 | size += config->rx_cfg[i].num_rxd; | |
20346722 | 391 | mac_control->rings[i].block_count = |
1da177e4 | 392 | config->rx_cfg[i].num_rxd / (MAX_RXDS_PER_BLOCK + 1); |
20346722 | 393 | mac_control->rings[i].pkt_cnt = |
394 | config->rx_cfg[i].num_rxd - mac_control->rings[i].block_count; | |
1da177e4 | 395 | } |
20346722 | 396 | size = (size * (sizeof(RxD_t))); |
397 | rx_sz = size; | |
1da177e4 LT |
398 | |
399 | for (i = 0; i < config->rx_ring_num; i++) { | |
20346722 | 400 | mac_control->rings[i].rx_curr_get_info.block_index = 0; |
401 | mac_control->rings[i].rx_curr_get_info.offset = 0; | |
402 | mac_control->rings[i].rx_curr_get_info.ring_len = | |
1da177e4 | 403 | config->rx_cfg[i].num_rxd - 1; |
20346722 | 404 | mac_control->rings[i].rx_curr_put_info.block_index = 0; |
405 | mac_control->rings[i].rx_curr_put_info.offset = 0; | |
406 | mac_control->rings[i].rx_curr_put_info.ring_len = | |
1da177e4 | 407 | config->rx_cfg[i].num_rxd - 1; |
20346722 | 408 | mac_control->rings[i].nic = nic; |
409 | mac_control->rings[i].ring_no = i; | |
410 | ||
1da177e4 LT |
411 | blk_cnt = |
412 | config->rx_cfg[i].num_rxd / (MAX_RXDS_PER_BLOCK + 1); | |
413 | /* Allocating all the Rx blocks */ | |
414 | for (j = 0; j < blk_cnt; j++) { | |
415 | #ifndef CONFIG_2BUFF_MODE | |
416 | size = (MAX_RXDS_PER_BLOCK + 1) * (sizeof(RxD_t)); | |
417 | #else | |
418 | size = SIZE_OF_BLOCK; | |
419 | #endif | |
420 | tmp_v_addr = pci_alloc_consistent(nic->pdev, size, | |
421 | &tmp_p_addr); | |
422 | if (tmp_v_addr == NULL) { | |
423 | /* | |
20346722 | 424 | * In case of failure, free_shared_mem() |
425 | * is called, which should free any | |
426 | * memory that was alloced till the | |
1da177e4 LT |
427 | * failure happened. |
428 | */ | |
20346722 | 429 | mac_control->rings[i].rx_blocks[j].block_virt_addr = |
1da177e4 LT |
430 | tmp_v_addr; |
431 | return -ENOMEM; | |
432 | } | |
433 | memset(tmp_v_addr, 0, size); | |
20346722 | 434 | mac_control->rings[i].rx_blocks[j].block_virt_addr = |
435 | tmp_v_addr; | |
436 | mac_control->rings[i].rx_blocks[j].block_dma_addr = | |
437 | tmp_p_addr; | |
1da177e4 LT |
438 | } |
439 | /* Interlinking all Rx Blocks */ | |
440 | for (j = 0; j < blk_cnt; j++) { | |
20346722 | 441 | tmp_v_addr = |
442 | mac_control->rings[i].rx_blocks[j].block_virt_addr; | |
1da177e4 | 443 | tmp_v_addr_next = |
20346722 | 444 | mac_control->rings[i].rx_blocks[(j + 1) % |
1da177e4 | 445 | blk_cnt].block_virt_addr; |
20346722 | 446 | tmp_p_addr = |
447 | mac_control->rings[i].rx_blocks[j].block_dma_addr; | |
1da177e4 | 448 | tmp_p_addr_next = |
20346722 | 449 | mac_control->rings[i].rx_blocks[(j + 1) % |
1da177e4 LT |
450 | blk_cnt].block_dma_addr; |
451 | ||
452 | pre_rxd_blk = (RxD_block_t *) tmp_v_addr; | |
20346722 | 453 | pre_rxd_blk->reserved_1 = END_OF_BLOCK; /* last RxD |
1da177e4 LT |
454 | * marker. |
455 | */ | |
456 | #ifndef CONFIG_2BUFF_MODE | |
457 | pre_rxd_blk->reserved_2_pNext_RxD_block = | |
458 | (unsigned long) tmp_v_addr_next; | |
459 | #endif | |
460 | pre_rxd_blk->pNext_RxD_Blk_physical = | |
461 | (u64) tmp_p_addr_next; | |
462 | } | |
463 | } | |
464 | ||
465 | #ifdef CONFIG_2BUFF_MODE | |
20346722 | 466 | /* |
1da177e4 LT |
467 | * Allocation of Storages for buffer addresses in 2BUFF mode |
468 | * and the buffers as well. | |
469 | */ | |
470 | for (i = 0; i < config->rx_ring_num; i++) { | |
471 | blk_cnt = | |
472 | config->rx_cfg[i].num_rxd / (MAX_RXDS_PER_BLOCK + 1); | |
20346722 | 473 | mac_control->rings[i].ba = kmalloc((sizeof(buffAdd_t *) * blk_cnt), |
1da177e4 | 474 | GFP_KERNEL); |
20346722 | 475 | if (!mac_control->rings[i].ba) |
1da177e4 LT |
476 | return -ENOMEM; |
477 | for (j = 0; j < blk_cnt; j++) { | |
478 | int k = 0; | |
20346722 | 479 | mac_control->rings[i].ba[j] = kmalloc((sizeof(buffAdd_t) * |
1da177e4 LT |
480 | (MAX_RXDS_PER_BLOCK + 1)), |
481 | GFP_KERNEL); | |
20346722 | 482 | if (!mac_control->rings[i].ba[j]) |
1da177e4 LT |
483 | return -ENOMEM; |
484 | while (k != MAX_RXDS_PER_BLOCK) { | |
20346722 | 485 | ba = &mac_control->rings[i].ba[j][k]; |
1da177e4 | 486 | |
20346722 | 487 | ba->ba_0_org = (void *) kmalloc |
1da177e4 LT |
488 | (BUF0_LEN + ALIGN_SIZE, GFP_KERNEL); |
489 | if (!ba->ba_0_org) | |
490 | return -ENOMEM; | |
20346722 | 491 | tmp = (u64) ba->ba_0_org; |
1da177e4 | 492 | tmp += ALIGN_SIZE; |
20346722 | 493 | tmp &= ~((u64) ALIGN_SIZE); |
1da177e4 LT |
494 | ba->ba_0 = (void *) tmp; |
495 | ||
20346722 | 496 | ba->ba_1_org = (void *) kmalloc |
1da177e4 LT |
497 | (BUF1_LEN + ALIGN_SIZE, GFP_KERNEL); |
498 | if (!ba->ba_1_org) | |
499 | return -ENOMEM; | |
20346722 | 500 | tmp = (u64) ba->ba_1_org; |
1da177e4 | 501 | tmp += ALIGN_SIZE; |
20346722 | 502 | tmp &= ~((u64) ALIGN_SIZE); |
1da177e4 LT |
503 | ba->ba_1 = (void *) tmp; |
504 | k++; | |
505 | } | |
506 | } | |
507 | } | |
508 | #endif | |
509 | ||
510 | /* Allocation and initialization of Statistics block */ | |
511 | size = sizeof(StatInfo_t); | |
512 | mac_control->stats_mem = pci_alloc_consistent | |
513 | (nic->pdev, size, &mac_control->stats_mem_phy); | |
514 | ||
515 | if (!mac_control->stats_mem) { | |
20346722 | 516 | /* |
517 | * In case of failure, free_shared_mem() is called, which | |
518 | * should free any memory that was alloced till the | |
1da177e4 LT |
519 | * failure happened. |
520 | */ | |
521 | return -ENOMEM; | |
522 | } | |
523 | mac_control->stats_mem_sz = size; | |
524 | ||
525 | tmp_v_addr = mac_control->stats_mem; | |
526 | mac_control->stats_info = (StatInfo_t *) tmp_v_addr; | |
527 | memset(tmp_v_addr, 0, size); | |
1da177e4 LT |
528 | DBG_PRINT(INIT_DBG, "%s:Ring Mem PHY: 0x%llx\n", dev->name, |
529 | (unsigned long long) tmp_p_addr); | |
530 | ||
531 | return SUCCESS; | |
532 | } | |
533 | ||
20346722 | 534 | /** |
535 | * free_shared_mem - Free the allocated Memory | |
1da177e4 LT |
536 | * @nic: Device private variable. |
537 | * Description: This function is to free all memory locations allocated by | |
538 | * the init_shared_mem() function and return it to the kernel. | |
539 | */ | |
540 | ||
541 | static void free_shared_mem(struct s2io_nic *nic) | |
542 | { | |
543 | int i, j, blk_cnt, size; | |
544 | void *tmp_v_addr; | |
545 | dma_addr_t tmp_p_addr; | |
546 | mac_info_t *mac_control; | |
547 | struct config_param *config; | |
548 | int lst_size, lst_per_page; | |
549 | ||
550 | ||
551 | if (!nic) | |
552 | return; | |
553 | ||
554 | mac_control = &nic->mac_control; | |
555 | config = &nic->config; | |
556 | ||
557 | lst_size = (sizeof(TxD_t) * config->max_txds); | |
558 | lst_per_page = PAGE_SIZE / lst_size; | |
559 | ||
560 | for (i = 0; i < config->tx_fifo_num; i++) { | |
561 | int page_num = TXD_MEM_PAGE_CNT(config->tx_cfg[i].fifo_len, | |
562 | lst_per_page); | |
563 | for (j = 0; j < page_num; j++) { | |
564 | int mem_blks = (j * lst_per_page); | |
20346722 | 565 | if (!mac_control->fifos[i].list_info[mem_blks]. |
566 | list_virt_addr) | |
1da177e4 LT |
567 | break; |
568 | pci_free_consistent(nic->pdev, PAGE_SIZE, | |
20346722 | 569 | mac_control->fifos[i]. |
570 | list_info[mem_blks]. | |
1da177e4 | 571 | list_virt_addr, |
20346722 | 572 | mac_control->fifos[i]. |
573 | list_info[mem_blks]. | |
1da177e4 LT |
574 | list_phy_addr); |
575 | } | |
20346722 | 576 | kfree(mac_control->fifos[i].list_info); |
1da177e4 LT |
577 | } |
578 | ||
579 | #ifndef CONFIG_2BUFF_MODE | |
580 | size = (MAX_RXDS_PER_BLOCK + 1) * (sizeof(RxD_t)); | |
581 | #else | |
582 | size = SIZE_OF_BLOCK; | |
583 | #endif | |
584 | for (i = 0; i < config->rx_ring_num; i++) { | |
20346722 | 585 | blk_cnt = mac_control->rings[i].block_count; |
1da177e4 | 586 | for (j = 0; j < blk_cnt; j++) { |
20346722 | 587 | tmp_v_addr = mac_control->rings[i].rx_blocks[j]. |
588 | block_virt_addr; | |
589 | tmp_p_addr = mac_control->rings[i].rx_blocks[j]. | |
590 | block_dma_addr; | |
1da177e4 LT |
591 | if (tmp_v_addr == NULL) |
592 | break; | |
593 | pci_free_consistent(nic->pdev, size, | |
594 | tmp_v_addr, tmp_p_addr); | |
595 | } | |
596 | } | |
597 | ||
598 | #ifdef CONFIG_2BUFF_MODE | |
599 | /* Freeing buffer storage addresses in 2BUFF mode. */ | |
600 | for (i = 0; i < config->rx_ring_num; i++) { | |
601 | blk_cnt = | |
602 | config->rx_cfg[i].num_rxd / (MAX_RXDS_PER_BLOCK + 1); | |
1da177e4 LT |
603 | for (j = 0; j < blk_cnt; j++) { |
604 | int k = 0; | |
20346722 | 605 | if (!mac_control->rings[i].ba[j]) |
606 | continue; | |
1da177e4 | 607 | while (k != MAX_RXDS_PER_BLOCK) { |
20346722 | 608 | buffAdd_t *ba = &mac_control->rings[i].ba[j][k]; |
1da177e4 LT |
609 | kfree(ba->ba_0_org); |
610 | kfree(ba->ba_1_org); | |
611 | k++; | |
612 | } | |
20346722 | 613 | kfree(mac_control->rings[i].ba[j]); |
1da177e4 | 614 | } |
20346722 | 615 | if (mac_control->rings[i].ba) |
616 | kfree(mac_control->rings[i].ba); | |
1da177e4 | 617 | } |
1da177e4 LT |
618 | #endif |
619 | ||
620 | if (mac_control->stats_mem) { | |
621 | pci_free_consistent(nic->pdev, | |
622 | mac_control->stats_mem_sz, | |
623 | mac_control->stats_mem, | |
624 | mac_control->stats_mem_phy); | |
625 | } | |
626 | } | |
627 | ||
20346722 | 628 | /** |
629 | * init_nic - Initialization of hardware | |
1da177e4 | 630 | * @nic: device peivate variable |
20346722 | 631 | * Description: The function sequentially configures every block |
632 | * of the H/W from their reset values. | |
633 | * Return Value: SUCCESS on success and | |
1da177e4 LT |
634 | * '-1' on failure (endian settings incorrect). |
635 | */ | |
636 | ||
637 | static int init_nic(struct s2io_nic *nic) | |
638 | { | |
639 | XENA_dev_config_t __iomem *bar0 = nic->bar0; | |
640 | struct net_device *dev = nic->dev; | |
641 | register u64 val64 = 0; | |
642 | void __iomem *add; | |
643 | u32 time; | |
644 | int i, j; | |
645 | mac_info_t *mac_control; | |
646 | struct config_param *config; | |
647 | int mdio_cnt = 0, dtx_cnt = 0; | |
648 | unsigned long long mem_share; | |
20346722 | 649 | int mem_size; |
1da177e4 LT |
650 | |
651 | mac_control = &nic->mac_control; | |
652 | config = &nic->config; | |
653 | ||
5e25b9dd | 654 | /* to set the swapper controle on the card */ |
20346722 | 655 | if(s2io_set_swapper(nic)) { |
1da177e4 LT |
656 | DBG_PRINT(ERR_DBG,"ERROR: Setting Swapper failed\n"); |
657 | return -1; | |
658 | } | |
659 | ||
660 | /* Remove XGXS from reset state */ | |
661 | val64 = 0; | |
662 | writeq(val64, &bar0->sw_reset); | |
1da177e4 | 663 | msleep(500); |
20346722 | 664 | val64 = readq(&bar0->sw_reset); |
1da177e4 LT |
665 | |
666 | /* Enable Receiving broadcasts */ | |
667 | add = &bar0->mac_cfg; | |
668 | val64 = readq(&bar0->mac_cfg); | |
669 | val64 |= MAC_RMAC_BCAST_ENABLE; | |
670 | writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key); | |
671 | writel((u32) val64, add); | |
672 | writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key); | |
673 | writel((u32) (val64 >> 32), (add + 4)); | |
674 | ||
675 | /* Read registers in all blocks */ | |
676 | val64 = readq(&bar0->mac_int_mask); | |
677 | val64 = readq(&bar0->mc_int_mask); | |
678 | val64 = readq(&bar0->xgxs_int_mask); | |
679 | ||
680 | /* Set MTU */ | |
681 | val64 = dev->mtu; | |
682 | writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len); | |
683 | ||
20346722 | 684 | /* |
685 | * Configuring the XAUI Interface of Xena. | |
1da177e4 | 686 | * *************************************** |
20346722 | 687 | * To Configure the Xena's XAUI, one has to write a series |
688 | * of 64 bit values into two registers in a particular | |
689 | * sequence. Hence a macro 'SWITCH_SIGN' has been defined | |
690 | * which will be defined in the array of configuration values | |
691 | * (default_dtx_cfg & default_mdio_cfg) at appropriate places | |
692 | * to switch writing from one regsiter to another. We continue | |
1da177e4 | 693 | * writing these values until we encounter the 'END_SIGN' macro. |
20346722 | 694 | * For example, After making a series of 21 writes into |
695 | * dtx_control register the 'SWITCH_SIGN' appears and hence we | |
1da177e4 LT |
696 | * start writing into mdio_control until we encounter END_SIGN. |
697 | */ | |
698 | while (1) { | |
699 | dtx_cfg: | |
700 | while (default_dtx_cfg[dtx_cnt] != END_SIGN) { | |
701 | if (default_dtx_cfg[dtx_cnt] == SWITCH_SIGN) { | |
702 | dtx_cnt++; | |
703 | goto mdio_cfg; | |
704 | } | |
705 | SPECIAL_REG_WRITE(default_dtx_cfg[dtx_cnt], | |
706 | &bar0->dtx_control, UF); | |
707 | val64 = readq(&bar0->dtx_control); | |
708 | dtx_cnt++; | |
709 | } | |
710 | mdio_cfg: | |
711 | while (default_mdio_cfg[mdio_cnt] != END_SIGN) { | |
712 | if (default_mdio_cfg[mdio_cnt] == SWITCH_SIGN) { | |
713 | mdio_cnt++; | |
714 | goto dtx_cfg; | |
715 | } | |
716 | SPECIAL_REG_WRITE(default_mdio_cfg[mdio_cnt], | |
717 | &bar0->mdio_control, UF); | |
718 | val64 = readq(&bar0->mdio_control); | |
719 | mdio_cnt++; | |
720 | } | |
721 | if ((default_dtx_cfg[dtx_cnt] == END_SIGN) && | |
722 | (default_mdio_cfg[mdio_cnt] == END_SIGN)) { | |
723 | break; | |
724 | } else { | |
725 | goto dtx_cfg; | |
726 | } | |
727 | } | |
728 | ||
729 | /* Tx DMA Initialization */ | |
730 | val64 = 0; | |
731 | writeq(val64, &bar0->tx_fifo_partition_0); | |
732 | writeq(val64, &bar0->tx_fifo_partition_1); | |
733 | writeq(val64, &bar0->tx_fifo_partition_2); | |
734 | writeq(val64, &bar0->tx_fifo_partition_3); | |
735 | ||
736 | ||
737 | for (i = 0, j = 0; i < config->tx_fifo_num; i++) { | |
738 | val64 |= | |
739 | vBIT(config->tx_cfg[i].fifo_len - 1, ((i * 32) + 19), | |
740 | 13) | vBIT(config->tx_cfg[i].fifo_priority, | |
741 | ((i * 32) + 5), 3); | |
742 | ||
743 | if (i == (config->tx_fifo_num - 1)) { | |
744 | if (i % 2 == 0) | |
745 | i++; | |
746 | } | |
747 | ||
748 | switch (i) { | |
749 | case 1: | |
750 | writeq(val64, &bar0->tx_fifo_partition_0); | |
751 | val64 = 0; | |
752 | break; | |
753 | case 3: | |
754 | writeq(val64, &bar0->tx_fifo_partition_1); | |
755 | val64 = 0; | |
756 | break; | |
757 | case 5: | |
758 | writeq(val64, &bar0->tx_fifo_partition_2); | |
759 | val64 = 0; | |
760 | break; | |
761 | case 7: | |
762 | writeq(val64, &bar0->tx_fifo_partition_3); | |
763 | break; | |
764 | } | |
765 | } | |
766 | ||
767 | /* Enable Tx FIFO partition 0. */ | |
768 | val64 = readq(&bar0->tx_fifo_partition_0); | |
769 | val64 |= BIT(0); /* To enable the FIFO partition. */ | |
770 | writeq(val64, &bar0->tx_fifo_partition_0); | |
771 | ||
5e25b9dd | 772 | /* |
773 | * Disable 4 PCCs for Xena1, 2 and 3 as per H/W bug | |
774 | * SXE-008 TRANSMIT DMA ARBITRATION ISSUE. | |
775 | */ | |
776 | if (get_xena_rev_id(nic->pdev) < 4) | |
777 | writeq(PCC_ENABLE_FOUR, &bar0->pcc_enable); | |
778 | ||
1da177e4 LT |
779 | val64 = readq(&bar0->tx_fifo_partition_0); |
780 | DBG_PRINT(INIT_DBG, "Fifo partition at: 0x%p is: 0x%llx\n", | |
781 | &bar0->tx_fifo_partition_0, (unsigned long long) val64); | |
782 | ||
20346722 | 783 | /* |
784 | * Initialization of Tx_PA_CONFIG register to ignore packet | |
1da177e4 LT |
785 | * integrity checking. |
786 | */ | |
787 | val64 = readq(&bar0->tx_pa_cfg); | |
788 | val64 |= TX_PA_CFG_IGNORE_FRM_ERR | TX_PA_CFG_IGNORE_SNAP_OUI | | |
789 | TX_PA_CFG_IGNORE_LLC_CTRL | TX_PA_CFG_IGNORE_L2_ERR; | |
790 | writeq(val64, &bar0->tx_pa_cfg); | |
791 | ||
792 | /* Rx DMA intialization. */ | |
793 | val64 = 0; | |
794 | for (i = 0; i < config->rx_ring_num; i++) { | |
795 | val64 |= | |
796 | vBIT(config->rx_cfg[i].ring_priority, (5 + (i * 8)), | |
797 | 3); | |
798 | } | |
799 | writeq(val64, &bar0->rx_queue_priority); | |
800 | ||
20346722 | 801 | /* |
802 | * Allocating equal share of memory to all the | |
1da177e4 LT |
803 | * configured Rings. |
804 | */ | |
805 | val64 = 0; | |
20346722 | 806 | mem_size = 64; |
1da177e4 LT |
807 | for (i = 0; i < config->rx_ring_num; i++) { |
808 | switch (i) { | |
809 | case 0: | |
20346722 | 810 | mem_share = (mem_size / config->rx_ring_num + |
811 | mem_size % config->rx_ring_num); | |
1da177e4 LT |
812 | val64 |= RX_QUEUE_CFG_Q0_SZ(mem_share); |
813 | continue; | |
814 | case 1: | |
20346722 | 815 | mem_share = (mem_size / config->rx_ring_num); |
1da177e4 LT |
816 | val64 |= RX_QUEUE_CFG_Q1_SZ(mem_share); |
817 | continue; | |
818 | case 2: | |
20346722 | 819 | mem_share = (mem_size / config->rx_ring_num); |
1da177e4 LT |
820 | val64 |= RX_QUEUE_CFG_Q2_SZ(mem_share); |
821 | continue; | |
822 | case 3: | |
20346722 | 823 | mem_share = (mem_size / config->rx_ring_num); |
1da177e4 LT |
824 | val64 |= RX_QUEUE_CFG_Q3_SZ(mem_share); |
825 | continue; | |
826 | case 4: | |
20346722 | 827 | mem_share = (mem_size / config->rx_ring_num); |
1da177e4 LT |
828 | val64 |= RX_QUEUE_CFG_Q4_SZ(mem_share); |
829 | continue; | |
830 | case 5: | |
20346722 | 831 | mem_share = (mem_size / config->rx_ring_num); |
1da177e4 LT |
832 | val64 |= RX_QUEUE_CFG_Q5_SZ(mem_share); |
833 | continue; | |
834 | case 6: | |
20346722 | 835 | mem_share = (mem_size / config->rx_ring_num); |
1da177e4 LT |
836 | val64 |= RX_QUEUE_CFG_Q6_SZ(mem_share); |
837 | continue; | |
838 | case 7: | |
20346722 | 839 | mem_share = (mem_size / config->rx_ring_num); |
1da177e4 LT |
840 | val64 |= RX_QUEUE_CFG_Q7_SZ(mem_share); |
841 | continue; | |
842 | } | |
843 | } | |
844 | writeq(val64, &bar0->rx_queue_cfg); | |
845 | ||
20346722 | 846 | /* |
5e25b9dd | 847 | * Filling Tx round robin registers |
848 | * as per the number of FIFOs | |
1da177e4 | 849 | */ |
5e25b9dd | 850 | switch (config->tx_fifo_num) { |
851 | case 1: | |
852 | val64 = 0x0000000000000000ULL; | |
853 | writeq(val64, &bar0->tx_w_round_robin_0); | |
854 | writeq(val64, &bar0->tx_w_round_robin_1); | |
855 | writeq(val64, &bar0->tx_w_round_robin_2); | |
856 | writeq(val64, &bar0->tx_w_round_robin_3); | |
857 | writeq(val64, &bar0->tx_w_round_robin_4); | |
858 | break; | |
859 | case 2: | |
860 | val64 = 0x0000010000010000ULL; | |
861 | writeq(val64, &bar0->tx_w_round_robin_0); | |
862 | val64 = 0x0100000100000100ULL; | |
863 | writeq(val64, &bar0->tx_w_round_robin_1); | |
864 | val64 = 0x0001000001000001ULL; | |
865 | writeq(val64, &bar0->tx_w_round_robin_2); | |
866 | val64 = 0x0000010000010000ULL; | |
867 | writeq(val64, &bar0->tx_w_round_robin_3); | |
868 | val64 = 0x0100000000000000ULL; | |
869 | writeq(val64, &bar0->tx_w_round_robin_4); | |
870 | break; | |
871 | case 3: | |
872 | val64 = 0x0001000102000001ULL; | |
873 | writeq(val64, &bar0->tx_w_round_robin_0); | |
874 | val64 = 0x0001020000010001ULL; | |
875 | writeq(val64, &bar0->tx_w_round_robin_1); | |
876 | val64 = 0x0200000100010200ULL; | |
877 | writeq(val64, &bar0->tx_w_round_robin_2); | |
878 | val64 = 0x0001000102000001ULL; | |
879 | writeq(val64, &bar0->tx_w_round_robin_3); | |
880 | val64 = 0x0001020000000000ULL; | |
881 | writeq(val64, &bar0->tx_w_round_robin_4); | |
882 | break; | |
883 | case 4: | |
884 | val64 = 0x0001020300010200ULL; | |
885 | writeq(val64, &bar0->tx_w_round_robin_0); | |
886 | val64 = 0x0100000102030001ULL; | |
887 | writeq(val64, &bar0->tx_w_round_robin_1); | |
888 | val64 = 0x0200010000010203ULL; | |
889 | writeq(val64, &bar0->tx_w_round_robin_2); | |
890 | val64 = 0x0001020001000001ULL; | |
891 | writeq(val64, &bar0->tx_w_round_robin_3); | |
892 | val64 = 0x0203000100000000ULL; | |
893 | writeq(val64, &bar0->tx_w_round_robin_4); | |
894 | break; | |
895 | case 5: | |
896 | val64 = 0x0001000203000102ULL; | |
897 | writeq(val64, &bar0->tx_w_round_robin_0); | |
898 | val64 = 0x0001020001030004ULL; | |
899 | writeq(val64, &bar0->tx_w_round_robin_1); | |
900 | val64 = 0x0001000203000102ULL; | |
901 | writeq(val64, &bar0->tx_w_round_robin_2); | |
902 | val64 = 0x0001020001030004ULL; | |
903 | writeq(val64, &bar0->tx_w_round_robin_3); | |
904 | val64 = 0x0001000000000000ULL; | |
905 | writeq(val64, &bar0->tx_w_round_robin_4); | |
906 | break; | |
907 | case 6: | |
908 | val64 = 0x0001020304000102ULL; | |
909 | writeq(val64, &bar0->tx_w_round_robin_0); | |
910 | val64 = 0x0304050001020001ULL; | |
911 | writeq(val64, &bar0->tx_w_round_robin_1); | |
912 | val64 = 0x0203000100000102ULL; | |
913 | writeq(val64, &bar0->tx_w_round_robin_2); | |
914 | val64 = 0x0304000102030405ULL; | |
915 | writeq(val64, &bar0->tx_w_round_robin_3); | |
916 | val64 = 0x0001000200000000ULL; | |
917 | writeq(val64, &bar0->tx_w_round_robin_4); | |
918 | break; | |
919 | case 7: | |
920 | val64 = 0x0001020001020300ULL; | |
921 | writeq(val64, &bar0->tx_w_round_robin_0); | |
922 | val64 = 0x0102030400010203ULL; | |
923 | writeq(val64, &bar0->tx_w_round_robin_1); | |
924 | val64 = 0x0405060001020001ULL; | |
925 | writeq(val64, &bar0->tx_w_round_robin_2); | |
926 | val64 = 0x0304050000010200ULL; | |
927 | writeq(val64, &bar0->tx_w_round_robin_3); | |
928 | val64 = 0x0102030000000000ULL; | |
929 | writeq(val64, &bar0->tx_w_round_robin_4); | |
930 | break; | |
931 | case 8: | |
932 | val64 = 0x0001020300040105ULL; | |
933 | writeq(val64, &bar0->tx_w_round_robin_0); | |
934 | val64 = 0x0200030106000204ULL; | |
935 | writeq(val64, &bar0->tx_w_round_robin_1); | |
936 | val64 = 0x0103000502010007ULL; | |
937 | writeq(val64, &bar0->tx_w_round_robin_2); | |
938 | val64 = 0x0304010002060500ULL; | |
939 | writeq(val64, &bar0->tx_w_round_robin_3); | |
940 | val64 = 0x0103020400000000ULL; | |
941 | writeq(val64, &bar0->tx_w_round_robin_4); | |
942 | break; | |
943 | } | |
944 | ||
945 | /* Filling the Rx round robin registers as per the | |
946 | * number of Rings and steering based on QoS. | |
947 | */ | |
948 | switch (config->rx_ring_num) { | |
949 | case 1: | |
950 | val64 = 0x8080808080808080ULL; | |
951 | writeq(val64, &bar0->rts_qos_steering); | |
952 | break; | |
953 | case 2: | |
954 | val64 = 0x0000010000010000ULL; | |
955 | writeq(val64, &bar0->rx_w_round_robin_0); | |
956 | val64 = 0x0100000100000100ULL; | |
957 | writeq(val64, &bar0->rx_w_round_robin_1); | |
958 | val64 = 0x0001000001000001ULL; | |
959 | writeq(val64, &bar0->rx_w_round_robin_2); | |
960 | val64 = 0x0000010000010000ULL; | |
961 | writeq(val64, &bar0->rx_w_round_robin_3); | |
962 | val64 = 0x0100000000000000ULL; | |
963 | writeq(val64, &bar0->rx_w_round_robin_4); | |
964 | ||
965 | val64 = 0x8080808040404040ULL; | |
966 | writeq(val64, &bar0->rts_qos_steering); | |
967 | break; | |
968 | case 3: | |
969 | val64 = 0x0001000102000001ULL; | |
970 | writeq(val64, &bar0->rx_w_round_robin_0); | |
971 | val64 = 0x0001020000010001ULL; | |
972 | writeq(val64, &bar0->rx_w_round_robin_1); | |
973 | val64 = 0x0200000100010200ULL; | |
974 | writeq(val64, &bar0->rx_w_round_robin_2); | |
975 | val64 = 0x0001000102000001ULL; | |
976 | writeq(val64, &bar0->rx_w_round_robin_3); | |
977 | val64 = 0x0001020000000000ULL; | |
978 | writeq(val64, &bar0->rx_w_round_robin_4); | |
979 | ||
980 | val64 = 0x8080804040402020ULL; | |
981 | writeq(val64, &bar0->rts_qos_steering); | |
982 | break; | |
983 | case 4: | |
984 | val64 = 0x0001020300010200ULL; | |
985 | writeq(val64, &bar0->rx_w_round_robin_0); | |
986 | val64 = 0x0100000102030001ULL; | |
987 | writeq(val64, &bar0->rx_w_round_robin_1); | |
988 | val64 = 0x0200010000010203ULL; | |
989 | writeq(val64, &bar0->rx_w_round_robin_2); | |
990 | val64 = 0x0001020001000001ULL; | |
991 | writeq(val64, &bar0->rx_w_round_robin_3); | |
992 | val64 = 0x0203000100000000ULL; | |
993 | writeq(val64, &bar0->rx_w_round_robin_4); | |
994 | ||
995 | val64 = 0x8080404020201010ULL; | |
996 | writeq(val64, &bar0->rts_qos_steering); | |
997 | break; | |
998 | case 5: | |
999 | val64 = 0x0001000203000102ULL; | |
1000 | writeq(val64, &bar0->rx_w_round_robin_0); | |
1001 | val64 = 0x0001020001030004ULL; | |
1002 | writeq(val64, &bar0->rx_w_round_robin_1); | |
1003 | val64 = 0x0001000203000102ULL; | |
1004 | writeq(val64, &bar0->rx_w_round_robin_2); | |
1005 | val64 = 0x0001020001030004ULL; | |
1006 | writeq(val64, &bar0->rx_w_round_robin_3); | |
1007 | val64 = 0x0001000000000000ULL; | |
1008 | writeq(val64, &bar0->rx_w_round_robin_4); | |
1009 | ||
1010 | val64 = 0x8080404020201008ULL; | |
1011 | writeq(val64, &bar0->rts_qos_steering); | |
1012 | break; | |
1013 | case 6: | |
1014 | val64 = 0x0001020304000102ULL; | |
1015 | writeq(val64, &bar0->rx_w_round_robin_0); | |
1016 | val64 = 0x0304050001020001ULL; | |
1017 | writeq(val64, &bar0->rx_w_round_robin_1); | |
1018 | val64 = 0x0203000100000102ULL; | |
1019 | writeq(val64, &bar0->rx_w_round_robin_2); | |
1020 | val64 = 0x0304000102030405ULL; | |
1021 | writeq(val64, &bar0->rx_w_round_robin_3); | |
1022 | val64 = 0x0001000200000000ULL; | |
1023 | writeq(val64, &bar0->rx_w_round_robin_4); | |
1024 | ||
1025 | val64 = 0x8080404020100804ULL; | |
1026 | writeq(val64, &bar0->rts_qos_steering); | |
1027 | break; | |
1028 | case 7: | |
1029 | val64 = 0x0001020001020300ULL; | |
1030 | writeq(val64, &bar0->rx_w_round_robin_0); | |
1031 | val64 = 0x0102030400010203ULL; | |
1032 | writeq(val64, &bar0->rx_w_round_robin_1); | |
1033 | val64 = 0x0405060001020001ULL; | |
1034 | writeq(val64, &bar0->rx_w_round_robin_2); | |
1035 | val64 = 0x0304050000010200ULL; | |
1036 | writeq(val64, &bar0->rx_w_round_robin_3); | |
1037 | val64 = 0x0102030000000000ULL; | |
1038 | writeq(val64, &bar0->rx_w_round_robin_4); | |
1039 | ||
1040 | val64 = 0x8080402010080402ULL; | |
1041 | writeq(val64, &bar0->rts_qos_steering); | |
1042 | break; | |
1043 | case 8: | |
1044 | val64 = 0x0001020300040105ULL; | |
1045 | writeq(val64, &bar0->rx_w_round_robin_0); | |
1046 | val64 = 0x0200030106000204ULL; | |
1047 | writeq(val64, &bar0->rx_w_round_robin_1); | |
1048 | val64 = 0x0103000502010007ULL; | |
1049 | writeq(val64, &bar0->rx_w_round_robin_2); | |
1050 | val64 = 0x0304010002060500ULL; | |
1051 | writeq(val64, &bar0->rx_w_round_robin_3); | |
1052 | val64 = 0x0103020400000000ULL; | |
1053 | writeq(val64, &bar0->rx_w_round_robin_4); | |
1054 | ||
1055 | val64 = 0x8040201008040201ULL; | |
1056 | writeq(val64, &bar0->rts_qos_steering); | |
1057 | break; | |
1058 | } | |
1da177e4 LT |
1059 | |
1060 | /* UDP Fix */ | |
1061 | val64 = 0; | |
20346722 | 1062 | for (i = 0; i < 8; i++) |
1da177e4 LT |
1063 | writeq(val64, &bar0->rts_frm_len_n[i]); |
1064 | ||
5e25b9dd | 1065 | /* Set the default rts frame length for the rings configured */ |
1066 | val64 = MAC_RTS_FRM_LEN_SET(dev->mtu+22); | |
1067 | for (i = 0 ; i < config->rx_ring_num ; i++) | |
1068 | writeq(val64, &bar0->rts_frm_len_n[i]); | |
1069 | ||
1070 | /* Set the frame length for the configured rings | |
1071 | * desired by the user | |
1072 | */ | |
1073 | for (i = 0; i < config->rx_ring_num; i++) { | |
1074 | /* If rts_frm_len[i] == 0 then it is assumed that user not | |
1075 | * specified frame length steering. | |
1076 | * If the user provides the frame length then program | |
1077 | * the rts_frm_len register for those values or else | |
1078 | * leave it as it is. | |
1079 | */ | |
1080 | if (rts_frm_len[i] != 0) { | |
1081 | writeq(MAC_RTS_FRM_LEN_SET(rts_frm_len[i]), | |
1082 | &bar0->rts_frm_len_n[i]); | |
1083 | } | |
1084 | } | |
1da177e4 | 1085 | |
20346722 | 1086 | /* Program statistics memory */ |
1da177e4 | 1087 | writeq(mac_control->stats_mem_phy, &bar0->stat_addr); |
1da177e4 | 1088 | |
20346722 | 1089 | /* |
1da177e4 LT |
1090 | * Initializing the sampling rate for the device to calculate the |
1091 | * bandwidth utilization. | |
1092 | */ | |
1093 | val64 = MAC_TX_LINK_UTIL_VAL(tmac_util_period) | | |
1094 | MAC_RX_LINK_UTIL_VAL(rmac_util_period); | |
1095 | writeq(val64, &bar0->mac_link_util); | |
1096 | ||
1097 | ||
20346722 | 1098 | /* |
1099 | * Initializing the Transmit and Receive Traffic Interrupt | |
1da177e4 LT |
1100 | * Scheme. |
1101 | */ | |
20346722 | 1102 | /* |
1103 | * TTI Initialization. Default Tx timer gets us about | |
1da177e4 LT |
1104 | * 250 interrupts per sec. Continuous interrupts are enabled |
1105 | * by default. | |
1106 | */ | |
1107 | val64 = TTI_DATA1_MEM_TX_TIMER_VAL(0x2078) | | |
1108 | TTI_DATA1_MEM_TX_URNG_A(0xA) | | |
1109 | TTI_DATA1_MEM_TX_URNG_B(0x10) | | |
5e25b9dd | 1110 | TTI_DATA1_MEM_TX_URNG_C(0x30) | TTI_DATA1_MEM_TX_TIMER_AC_EN; |
1111 | if (use_continuous_tx_intrs) | |
1112 | val64 |= TTI_DATA1_MEM_TX_TIMER_CI_EN; | |
1da177e4 LT |
1113 | writeq(val64, &bar0->tti_data1_mem); |
1114 | ||
1115 | val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) | | |
1116 | TTI_DATA2_MEM_TX_UFC_B(0x20) | | |
5e25b9dd | 1117 | TTI_DATA2_MEM_TX_UFC_C(0x70) | TTI_DATA2_MEM_TX_UFC_D(0x80); |
1da177e4 LT |
1118 | writeq(val64, &bar0->tti_data2_mem); |
1119 | ||
1120 | val64 = TTI_CMD_MEM_WE | TTI_CMD_MEM_STROBE_NEW_CMD; | |
1121 | writeq(val64, &bar0->tti_command_mem); | |
1122 | ||
20346722 | 1123 | /* |
1da177e4 LT |
1124 | * Once the operation completes, the Strobe bit of the command |
1125 | * register will be reset. We poll for this particular condition | |
1126 | * We wait for a maximum of 500ms for the operation to complete, | |
1127 | * if it's not complete by then we return error. | |
1128 | */ | |
1129 | time = 0; | |
1130 | while (TRUE) { | |
1131 | val64 = readq(&bar0->tti_command_mem); | |
1132 | if (!(val64 & TTI_CMD_MEM_STROBE_NEW_CMD)) { | |
1133 | break; | |
1134 | } | |
1135 | if (time > 10) { | |
1136 | DBG_PRINT(ERR_DBG, "%s: TTI init Failed\n", | |
1137 | dev->name); | |
1138 | return -1; | |
1139 | } | |
1140 | msleep(50); | |
1141 | time++; | |
1142 | } | |
1143 | ||
1144 | /* RTI Initialization */ | |
1145 | val64 = RTI_DATA1_MEM_RX_TIMER_VAL(0xFFF) | | |
1146 | RTI_DATA1_MEM_RX_URNG_A(0xA) | | |
1147 | RTI_DATA1_MEM_RX_URNG_B(0x10) | | |
1148 | RTI_DATA1_MEM_RX_URNG_C(0x30) | RTI_DATA1_MEM_RX_TIMER_AC_EN; | |
1149 | ||
1150 | writeq(val64, &bar0->rti_data1_mem); | |
1151 | ||
1152 | val64 = RTI_DATA2_MEM_RX_UFC_A(0x1) | | |
1153 | RTI_DATA2_MEM_RX_UFC_B(0x2) | | |
1154 | RTI_DATA2_MEM_RX_UFC_C(0x40) | RTI_DATA2_MEM_RX_UFC_D(0x80); | |
1155 | writeq(val64, &bar0->rti_data2_mem); | |
1156 | ||
1157 | val64 = RTI_CMD_MEM_WE | RTI_CMD_MEM_STROBE_NEW_CMD; | |
1158 | writeq(val64, &bar0->rti_command_mem); | |
1159 | ||
20346722 | 1160 | /* |
5e25b9dd | 1161 | * Once the operation completes, the Strobe bit of the |
1162 | * command register will be reset. We poll for this | |
1163 | * particular condition. We wait for a maximum of 500ms | |
1164 | * for the operation to complete, if it's not complete | |
1165 | * by then we return error. | |
1da177e4 LT |
1166 | */ |
1167 | time = 0; | |
1168 | while (TRUE) { | |
1169 | val64 = readq(&bar0->rti_command_mem); | |
20346722 | 1170 | if (!(val64 & RTI_CMD_MEM_STROBE_NEW_CMD)) { |
1da177e4 LT |
1171 | break; |
1172 | } | |
1173 | if (time > 10) { | |
1174 | DBG_PRINT(ERR_DBG, "%s: RTI init Failed\n", | |
1175 | dev->name); | |
1176 | return -1; | |
1177 | } | |
1178 | time++; | |
1179 | msleep(50); | |
1180 | } | |
1181 | ||
20346722 | 1182 | /* |
1183 | * Initializing proper values as Pause threshold into all | |
1da177e4 LT |
1184 | * the 8 Queues on Rx side. |
1185 | */ | |
1186 | writeq(0xffbbffbbffbbffbbULL, &bar0->mc_pause_thresh_q0q3); | |
1187 | writeq(0xffbbffbbffbbffbbULL, &bar0->mc_pause_thresh_q4q7); | |
1188 | ||
1189 | /* Disable RMAC PAD STRIPPING */ | |
20346722 | 1190 | add = (void *) &bar0->mac_cfg; |
1da177e4 LT |
1191 | val64 = readq(&bar0->mac_cfg); |
1192 | val64 &= ~(MAC_CFG_RMAC_STRIP_PAD); | |
1193 | writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key); | |
1194 | writel((u32) (val64), add); | |
1195 | writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key); | |
1196 | writel((u32) (val64 >> 32), (add + 4)); | |
1197 | val64 = readq(&bar0->mac_cfg); | |
1198 | ||
20346722 | 1199 | /* |
1200 | * Set the time value to be inserted in the pause frame | |
1da177e4 LT |
1201 | * generated by xena. |
1202 | */ | |
1203 | val64 = readq(&bar0->rmac_pause_cfg); | |
1204 | val64 &= ~(RMAC_PAUSE_HG_PTIME(0xffff)); | |
1205 | val64 |= RMAC_PAUSE_HG_PTIME(nic->mac_control.rmac_pause_time); | |
1206 | writeq(val64, &bar0->rmac_pause_cfg); | |
1207 | ||
20346722 | 1208 | /* |
1da177e4 LT |
1209 | * Set the Threshold Limit for Generating the pause frame |
1210 | * If the amount of data in any Queue exceeds ratio of | |
1211 | * (mac_control.mc_pause_threshold_q0q3 or q4q7)/256 | |
1212 | * pause frame is generated | |
1213 | */ | |
1214 | val64 = 0; | |
1215 | for (i = 0; i < 4; i++) { | |
1216 | val64 |= | |
1217 | (((u64) 0xFF00 | nic->mac_control. | |
1218 | mc_pause_threshold_q0q3) | |
1219 | << (i * 2 * 8)); | |
1220 | } | |
1221 | writeq(val64, &bar0->mc_pause_thresh_q0q3); | |
1222 | ||
1223 | val64 = 0; | |
1224 | for (i = 0; i < 4; i++) { | |
1225 | val64 |= | |
1226 | (((u64) 0xFF00 | nic->mac_control. | |
1227 | mc_pause_threshold_q4q7) | |
1228 | << (i * 2 * 8)); | |
1229 | } | |
1230 | writeq(val64, &bar0->mc_pause_thresh_q4q7); | |
1231 | ||
20346722 | 1232 | /* |
1233 | * TxDMA will stop Read request if the number of read split has | |
1da177e4 LT |
1234 | * exceeded the limit pointed by shared_splits |
1235 | */ | |
1236 | val64 = readq(&bar0->pic_control); | |
1237 | val64 |= PIC_CNTL_SHARED_SPLITS(shared_splits); | |
1238 | writeq(val64, &bar0->pic_control); | |
1239 | ||
1240 | return SUCCESS; | |
1241 | } | |
1242 | ||
20346722 | 1243 | /** |
1244 | * en_dis_able_nic_intrs - Enable or Disable the interrupts | |
1da177e4 LT |
1245 | * @nic: device private variable, |
1246 | * @mask: A mask indicating which Intr block must be modified and, | |
1247 | * @flag: A flag indicating whether to enable or disable the Intrs. | |
1248 | * Description: This function will either disable or enable the interrupts | |
20346722 | 1249 | * depending on the flag argument. The mask argument can be used to |
1250 | * enable/disable any Intr block. | |
1da177e4 LT |
1251 | * Return Value: NONE. |
1252 | */ | |
1253 | ||
1254 | static void en_dis_able_nic_intrs(struct s2io_nic *nic, u16 mask, int flag) | |
1255 | { | |
1256 | XENA_dev_config_t __iomem *bar0 = nic->bar0; | |
1257 | register u64 val64 = 0, temp64 = 0; | |
1258 | ||
1259 | /* Top level interrupt classification */ | |
1260 | /* PIC Interrupts */ | |
1261 | if ((mask & (TX_PIC_INTR | RX_PIC_INTR))) { | |
1262 | /* Enable PIC Intrs in the general intr mask register */ | |
1263 | val64 = TXPIC_INT_M | PIC_RX_INT_M; | |
1264 | if (flag == ENABLE_INTRS) { | |
1265 | temp64 = readq(&bar0->general_int_mask); | |
1266 | temp64 &= ~((u64) val64); | |
1267 | writeq(temp64, &bar0->general_int_mask); | |
20346722 | 1268 | /* |
1da177e4 | 1269 | * Disabled all PCIX, Flash, MDIO, IIC and GPIO |
20346722 | 1270 | * interrupts for now. |
1271 | * TODO | |
1da177e4 LT |
1272 | */ |
1273 | writeq(DISABLE_ALL_INTRS, &bar0->pic_int_mask); | |
20346722 | 1274 | /* |
1da177e4 LT |
1275 | * No MSI Support is available presently, so TTI and |
1276 | * RTI interrupts are also disabled. | |
1277 | */ | |
1278 | } else if (flag == DISABLE_INTRS) { | |
20346722 | 1279 | /* |
1280 | * Disable PIC Intrs in the general | |
1281 | * intr mask register | |
1da177e4 LT |
1282 | */ |
1283 | writeq(DISABLE_ALL_INTRS, &bar0->pic_int_mask); | |
1284 | temp64 = readq(&bar0->general_int_mask); | |
1285 | val64 |= temp64; | |
1286 | writeq(val64, &bar0->general_int_mask); | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | /* DMA Interrupts */ | |
1291 | /* Enabling/Disabling Tx DMA interrupts */ | |
1292 | if (mask & TX_DMA_INTR) { | |
1293 | /* Enable TxDMA Intrs in the general intr mask register */ | |
1294 | val64 = TXDMA_INT_M; | |
1295 | if (flag == ENABLE_INTRS) { | |
1296 | temp64 = readq(&bar0->general_int_mask); | |
1297 | temp64 &= ~((u64) val64); | |
1298 | writeq(temp64, &bar0->general_int_mask); | |
20346722 | 1299 | /* |
1300 | * Keep all interrupts other than PFC interrupt | |
1da177e4 LT |
1301 | * and PCC interrupt disabled in DMA level. |
1302 | */ | |
1303 | val64 = DISABLE_ALL_INTRS & ~(TXDMA_PFC_INT_M | | |
1304 | TXDMA_PCC_INT_M); | |
1305 | writeq(val64, &bar0->txdma_int_mask); | |
20346722 | 1306 | /* |
1307 | * Enable only the MISC error 1 interrupt in PFC block | |
1da177e4 LT |
1308 | */ |
1309 | val64 = DISABLE_ALL_INTRS & (~PFC_MISC_ERR_1); | |
1310 | writeq(val64, &bar0->pfc_err_mask); | |
20346722 | 1311 | /* |
1312 | * Enable only the FB_ECC error interrupt in PCC block | |
1da177e4 LT |
1313 | */ |
1314 | val64 = DISABLE_ALL_INTRS & (~PCC_FB_ECC_ERR); | |
1315 | writeq(val64, &bar0->pcc_err_mask); | |
1316 | } else if (flag == DISABLE_INTRS) { | |
20346722 | 1317 | /* |
1318 | * Disable TxDMA Intrs in the general intr mask | |
1319 | * register | |
1da177e4 LT |
1320 | */ |
1321 | writeq(DISABLE_ALL_INTRS, &bar0->txdma_int_mask); | |
1322 | writeq(DISABLE_ALL_INTRS, &bar0->pfc_err_mask); | |
1323 | temp64 = readq(&bar0->general_int_mask); | |
1324 | val64 |= temp64; | |
1325 | writeq(val64, &bar0->general_int_mask); | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | /* Enabling/Disabling Rx DMA interrupts */ | |
1330 | if (mask & RX_DMA_INTR) { | |
1331 | /* Enable RxDMA Intrs in the general intr mask register */ | |
1332 | val64 = RXDMA_INT_M; | |
1333 | if (flag == ENABLE_INTRS) { | |
1334 | temp64 = readq(&bar0->general_int_mask); | |
1335 | temp64 &= ~((u64) val64); | |
1336 | writeq(temp64, &bar0->general_int_mask); | |
20346722 | 1337 | /* |
1338 | * All RxDMA block interrupts are disabled for now | |
1339 | * TODO | |
1da177e4 LT |
1340 | */ |
1341 | writeq(DISABLE_ALL_INTRS, &bar0->rxdma_int_mask); | |
1342 | } else if (flag == DISABLE_INTRS) { | |
20346722 | 1343 | /* |
1344 | * Disable RxDMA Intrs in the general intr mask | |
1345 | * register | |
1da177e4 LT |
1346 | */ |
1347 | writeq(DISABLE_ALL_INTRS, &bar0->rxdma_int_mask); | |
1348 | temp64 = readq(&bar0->general_int_mask); | |
1349 | val64 |= temp64; | |
1350 | writeq(val64, &bar0->general_int_mask); | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | /* MAC Interrupts */ | |
1355 | /* Enabling/Disabling MAC interrupts */ | |
1356 | if (mask & (TX_MAC_INTR | RX_MAC_INTR)) { | |
1357 | val64 = TXMAC_INT_M | RXMAC_INT_M; | |
1358 | if (flag == ENABLE_INTRS) { | |
1359 | temp64 = readq(&bar0->general_int_mask); | |
1360 | temp64 &= ~((u64) val64); | |
1361 | writeq(temp64, &bar0->general_int_mask); | |
20346722 | 1362 | /* |
1363 | * All MAC block error interrupts are disabled for now | |
1da177e4 LT |
1364 | * except the link status change interrupt. |
1365 | * TODO | |
1366 | */ | |
1367 | val64 = MAC_INT_STATUS_RMAC_INT; | |
1368 | temp64 = readq(&bar0->mac_int_mask); | |
1369 | temp64 &= ~((u64) val64); | |
1370 | writeq(temp64, &bar0->mac_int_mask); | |
1371 | ||
1372 | val64 = readq(&bar0->mac_rmac_err_mask); | |
1373 | val64 &= ~((u64) RMAC_LINK_STATE_CHANGE_INT); | |
1374 | writeq(val64, &bar0->mac_rmac_err_mask); | |
1375 | } else if (flag == DISABLE_INTRS) { | |
20346722 | 1376 | /* |
1377 | * Disable MAC Intrs in the general intr mask register | |
1da177e4 LT |
1378 | */ |
1379 | writeq(DISABLE_ALL_INTRS, &bar0->mac_int_mask); | |
1380 | writeq(DISABLE_ALL_INTRS, | |
1381 | &bar0->mac_rmac_err_mask); | |
1382 | ||
1383 | temp64 = readq(&bar0->general_int_mask); | |
1384 | val64 |= temp64; | |
1385 | writeq(val64, &bar0->general_int_mask); | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | /* XGXS Interrupts */ | |
1390 | if (mask & (TX_XGXS_INTR | RX_XGXS_INTR)) { | |
1391 | val64 = TXXGXS_INT_M | RXXGXS_INT_M; | |
1392 | if (flag == ENABLE_INTRS) { | |
1393 | temp64 = readq(&bar0->general_int_mask); | |
1394 | temp64 &= ~((u64) val64); | |
1395 | writeq(temp64, &bar0->general_int_mask); | |
20346722 | 1396 | /* |
1da177e4 | 1397 | * All XGXS block error interrupts are disabled for now |
20346722 | 1398 | * TODO |
1da177e4 LT |
1399 | */ |
1400 | writeq(DISABLE_ALL_INTRS, &bar0->xgxs_int_mask); | |
1401 | } else if (flag == DISABLE_INTRS) { | |
20346722 | 1402 | /* |
1403 | * Disable MC Intrs in the general intr mask register | |
1da177e4 LT |
1404 | */ |
1405 | writeq(DISABLE_ALL_INTRS, &bar0->xgxs_int_mask); | |
1406 | temp64 = readq(&bar0->general_int_mask); | |
1407 | val64 |= temp64; | |
1408 | writeq(val64, &bar0->general_int_mask); | |
1409 | } | |
1410 | } | |
1411 | ||
1412 | /* Memory Controller(MC) interrupts */ | |
1413 | if (mask & MC_INTR) { | |
1414 | val64 = MC_INT_M; | |
1415 | if (flag == ENABLE_INTRS) { | |
1416 | temp64 = readq(&bar0->general_int_mask); | |
1417 | temp64 &= ~((u64) val64); | |
1418 | writeq(temp64, &bar0->general_int_mask); | |
20346722 | 1419 | /* |
5e25b9dd | 1420 | * Enable all MC Intrs. |
1da177e4 | 1421 | */ |
5e25b9dd | 1422 | writeq(0x0, &bar0->mc_int_mask); |
1423 | writeq(0x0, &bar0->mc_err_mask); | |
1da177e4 LT |
1424 | } else if (flag == DISABLE_INTRS) { |
1425 | /* | |
1426 | * Disable MC Intrs in the general intr mask register | |
1427 | */ | |
1428 | writeq(DISABLE_ALL_INTRS, &bar0->mc_int_mask); | |
1429 | temp64 = readq(&bar0->general_int_mask); | |
1430 | val64 |= temp64; | |
1431 | writeq(val64, &bar0->general_int_mask); | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | ||
1436 | /* Tx traffic interrupts */ | |
1437 | if (mask & TX_TRAFFIC_INTR) { | |
1438 | val64 = TXTRAFFIC_INT_M; | |
1439 | if (flag == ENABLE_INTRS) { | |
1440 | temp64 = readq(&bar0->general_int_mask); | |
1441 | temp64 &= ~((u64) val64); | |
1442 | writeq(temp64, &bar0->general_int_mask); | |
20346722 | 1443 | /* |
1da177e4 | 1444 | * Enable all the Tx side interrupts |
20346722 | 1445 | * writing 0 Enables all 64 TX interrupt levels |
1da177e4 LT |
1446 | */ |
1447 | writeq(0x0, &bar0->tx_traffic_mask); | |
1448 | } else if (flag == DISABLE_INTRS) { | |
20346722 | 1449 | /* |
1450 | * Disable Tx Traffic Intrs in the general intr mask | |
1da177e4 LT |
1451 | * register. |
1452 | */ | |
1453 | writeq(DISABLE_ALL_INTRS, &bar0->tx_traffic_mask); | |
1454 | temp64 = readq(&bar0->general_int_mask); | |
1455 | val64 |= temp64; | |
1456 | writeq(val64, &bar0->general_int_mask); | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | /* Rx traffic interrupts */ | |
1461 | if (mask & RX_TRAFFIC_INTR) { | |
1462 | val64 = RXTRAFFIC_INT_M; | |
1463 | if (flag == ENABLE_INTRS) { | |
1464 | temp64 = readq(&bar0->general_int_mask); | |
1465 | temp64 &= ~((u64) val64); | |
1466 | writeq(temp64, &bar0->general_int_mask); | |
1467 | /* writing 0 Enables all 8 RX interrupt levels */ | |
1468 | writeq(0x0, &bar0->rx_traffic_mask); | |
1469 | } else if (flag == DISABLE_INTRS) { | |
20346722 | 1470 | /* |
1471 | * Disable Rx Traffic Intrs in the general intr mask | |
1da177e4 LT |
1472 | * register. |
1473 | */ | |
1474 | writeq(DISABLE_ALL_INTRS, &bar0->rx_traffic_mask); | |
1475 | temp64 = readq(&bar0->general_int_mask); | |
1476 | val64 |= temp64; | |
1477 | writeq(val64, &bar0->general_int_mask); | |
1478 | } | |
1479 | } | |
1480 | } | |
1481 | ||
5e25b9dd | 1482 | static int check_prc_pcc_state(u64 val64, int flag, int rev_id) |
20346722 | 1483 | { |
1484 | int ret = 0; | |
1485 | ||
1486 | if (flag == FALSE) { | |
5e25b9dd | 1487 | if (rev_id >= 4) { |
1488 | if (!(val64 & ADAPTER_STATUS_RMAC_PCC_IDLE) && | |
1489 | ((val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) == | |
1490 | ADAPTER_STATUS_RC_PRC_QUIESCENT)) { | |
1491 | ret = 1; | |
1492 | } | |
1493 | } else { | |
1494 | if (!(val64 & ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE) && | |
1495 | ((val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) == | |
1496 | ADAPTER_STATUS_RC_PRC_QUIESCENT)) { | |
1497 | ret = 1; | |
1498 | } | |
20346722 | 1499 | } |
1500 | } else { | |
5e25b9dd | 1501 | if (rev_id >= 4) { |
1502 | if (((val64 & ADAPTER_STATUS_RMAC_PCC_IDLE) == | |
1503 | ADAPTER_STATUS_RMAC_PCC_IDLE) && | |
1504 | (!(val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) || | |
1505 | ((val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) == | |
1506 | ADAPTER_STATUS_RC_PRC_QUIESCENT))) { | |
1507 | ret = 1; | |
1508 | } | |
1509 | } else { | |
1510 | if (((val64 & ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE) == | |
1511 | ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE) && | |
1512 | (!(val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) || | |
1513 | ((val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) == | |
1514 | ADAPTER_STATUS_RC_PRC_QUIESCENT))) { | |
1515 | ret = 1; | |
1516 | } | |
20346722 | 1517 | } |
1518 | } | |
1519 | ||
1520 | return ret; | |
1521 | } | |
1522 | /** | |
1523 | * verify_xena_quiescence - Checks whether the H/W is ready | |
1da177e4 LT |
1524 | * @val64 : Value read from adapter status register. |
1525 | * @flag : indicates if the adapter enable bit was ever written once | |
1526 | * before. | |
1527 | * Description: Returns whether the H/W is ready to go or not. Depending | |
20346722 | 1528 | * on whether adapter enable bit was written or not the comparison |
1da177e4 LT |
1529 | * differs and the calling function passes the input argument flag to |
1530 | * indicate this. | |
20346722 | 1531 | * Return: 1 If xena is quiescence |
1da177e4 LT |
1532 | * 0 If Xena is not quiescence |
1533 | */ | |
1534 | ||
20346722 | 1535 | static int verify_xena_quiescence(nic_t *sp, u64 val64, int flag) |
1da177e4 LT |
1536 | { |
1537 | int ret = 0; | |
1538 | u64 tmp64 = ~((u64) val64); | |
5e25b9dd | 1539 | int rev_id = get_xena_rev_id(sp->pdev); |
1da177e4 LT |
1540 | |
1541 | if (! | |
1542 | (tmp64 & | |
1543 | (ADAPTER_STATUS_TDMA_READY | ADAPTER_STATUS_RDMA_READY | | |
1544 | ADAPTER_STATUS_PFC_READY | ADAPTER_STATUS_TMAC_BUF_EMPTY | | |
1545 | ADAPTER_STATUS_PIC_QUIESCENT | ADAPTER_STATUS_MC_DRAM_READY | | |
1546 | ADAPTER_STATUS_MC_QUEUES_READY | ADAPTER_STATUS_M_PLL_LOCK | | |
1547 | ADAPTER_STATUS_P_PLL_LOCK))) { | |
5e25b9dd | 1548 | ret = check_prc_pcc_state(val64, flag, rev_id); |
1da177e4 LT |
1549 | } |
1550 | ||
1551 | return ret; | |
1552 | } | |
1553 | ||
1554 | /** | |
1555 | * fix_mac_address - Fix for Mac addr problem on Alpha platforms | |
1556 | * @sp: Pointer to device specifc structure | |
20346722 | 1557 | * Description : |
1da177e4 LT |
1558 | * New procedure to clear mac address reading problems on Alpha platforms |
1559 | * | |
1560 | */ | |
1561 | ||
20346722 | 1562 | void fix_mac_address(nic_t * sp) |
1da177e4 LT |
1563 | { |
1564 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
1565 | u64 val64; | |
1566 | int i = 0; | |
1567 | ||
1568 | while (fix_mac[i] != END_SIGN) { | |
1569 | writeq(fix_mac[i++], &bar0->gpio_control); | |
20346722 | 1570 | udelay(10); |
1da177e4 LT |
1571 | val64 = readq(&bar0->gpio_control); |
1572 | } | |
1573 | } | |
1574 | ||
1575 | /** | |
20346722 | 1576 | * start_nic - Turns the device on |
1da177e4 | 1577 | * @nic : device private variable. |
20346722 | 1578 | * Description: |
1579 | * This function actually turns the device on. Before this function is | |
1580 | * called,all Registers are configured from their reset states | |
1581 | * and shared memory is allocated but the NIC is still quiescent. On | |
1da177e4 LT |
1582 | * calling this function, the device interrupts are cleared and the NIC is |
1583 | * literally switched on by writing into the adapter control register. | |
20346722 | 1584 | * Return Value: |
1da177e4 LT |
1585 | * SUCCESS on success and -1 on failure. |
1586 | */ | |
1587 | ||
1588 | static int start_nic(struct s2io_nic *nic) | |
1589 | { | |
1590 | XENA_dev_config_t __iomem *bar0 = nic->bar0; | |
1591 | struct net_device *dev = nic->dev; | |
1592 | register u64 val64 = 0; | |
20346722 | 1593 | u16 interruptible; |
1594 | u16 subid, i; | |
1da177e4 LT |
1595 | mac_info_t *mac_control; |
1596 | struct config_param *config; | |
1597 | ||
1598 | mac_control = &nic->mac_control; | |
1599 | config = &nic->config; | |
1600 | ||
1601 | /* PRC Initialization and configuration */ | |
1602 | for (i = 0; i < config->rx_ring_num; i++) { | |
20346722 | 1603 | writeq((u64) mac_control->rings[i].rx_blocks[0].block_dma_addr, |
1da177e4 LT |
1604 | &bar0->prc_rxd0_n[i]); |
1605 | ||
1606 | val64 = readq(&bar0->prc_ctrl_n[i]); | |
1607 | #ifndef CONFIG_2BUFF_MODE | |
1608 | val64 |= PRC_CTRL_RC_ENABLED; | |
1609 | #else | |
1610 | val64 |= PRC_CTRL_RC_ENABLED | PRC_CTRL_RING_MODE_3; | |
1611 | #endif | |
1612 | writeq(val64, &bar0->prc_ctrl_n[i]); | |
1613 | } | |
1614 | ||
1615 | #ifdef CONFIG_2BUFF_MODE | |
1616 | /* Enabling 2 buffer mode by writing into Rx_pa_cfg reg. */ | |
1617 | val64 = readq(&bar0->rx_pa_cfg); | |
1618 | val64 |= RX_PA_CFG_IGNORE_L2_ERR; | |
1619 | writeq(val64, &bar0->rx_pa_cfg); | |
1620 | #endif | |
1621 | ||
20346722 | 1622 | /* |
1da177e4 LT |
1623 | * Enabling MC-RLDRAM. After enabling the device, we timeout |
1624 | * for around 100ms, which is approximately the time required | |
1625 | * for the device to be ready for operation. | |
1626 | */ | |
1627 | val64 = readq(&bar0->mc_rldram_mrs); | |
1628 | val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE | MC_RLDRAM_MRS_ENABLE; | |
1629 | SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF); | |
1630 | val64 = readq(&bar0->mc_rldram_mrs); | |
1631 | ||
20346722 | 1632 | msleep(100); /* Delay by around 100 ms. */ |
1da177e4 LT |
1633 | |
1634 | /* Enabling ECC Protection. */ | |
1635 | val64 = readq(&bar0->adapter_control); | |
1636 | val64 &= ~ADAPTER_ECC_EN; | |
1637 | writeq(val64, &bar0->adapter_control); | |
1638 | ||
20346722 | 1639 | /* |
1640 | * Clearing any possible Link state change interrupts that | |
1da177e4 LT |
1641 | * could have popped up just before Enabling the card. |
1642 | */ | |
1643 | val64 = readq(&bar0->mac_rmac_err_reg); | |
1644 | if (val64) | |
1645 | writeq(val64, &bar0->mac_rmac_err_reg); | |
1646 | ||
20346722 | 1647 | /* |
1648 | * Verify if the device is ready to be enabled, if so enable | |
1da177e4 LT |
1649 | * it. |
1650 | */ | |
1651 | val64 = readq(&bar0->adapter_status); | |
20346722 | 1652 | if (!verify_xena_quiescence(nic, val64, nic->device_enabled_once)) { |
1da177e4 LT |
1653 | DBG_PRINT(ERR_DBG, "%s: device is not ready, ", dev->name); |
1654 | DBG_PRINT(ERR_DBG, "Adapter status reads: 0x%llx\n", | |
1655 | (unsigned long long) val64); | |
1656 | return FAILURE; | |
1657 | } | |
1658 | ||
1659 | /* Enable select interrupts */ | |
1660 | interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR | TX_MAC_INTR | | |
5e25b9dd | 1661 | RX_MAC_INTR | MC_INTR; |
1da177e4 LT |
1662 | en_dis_able_nic_intrs(nic, interruptible, ENABLE_INTRS); |
1663 | ||
20346722 | 1664 | /* |
1da177e4 | 1665 | * With some switches, link might be already up at this point. |
20346722 | 1666 | * Because of this weird behavior, when we enable laser, |
1667 | * we may not get link. We need to handle this. We cannot | |
1668 | * figure out which switch is misbehaving. So we are forced to | |
1669 | * make a global change. | |
1da177e4 LT |
1670 | */ |
1671 | ||
1672 | /* Enabling Laser. */ | |
1673 | val64 = readq(&bar0->adapter_control); | |
1674 | val64 |= ADAPTER_EOI_TX_ON; | |
1675 | writeq(val64, &bar0->adapter_control); | |
1676 | ||
1677 | /* SXE-002: Initialize link and activity LED */ | |
1678 | subid = nic->pdev->subsystem_device; | |
1679 | if ((subid & 0xFF) >= 0x07) { | |
1680 | val64 = readq(&bar0->gpio_control); | |
1681 | val64 |= 0x0000800000000000ULL; | |
1682 | writeq(val64, &bar0->gpio_control); | |
1683 | val64 = 0x0411040400000000ULL; | |
20346722 | 1684 | writeq(val64, (void __iomem *) ((u8 *) bar0 + 0x2700)); |
1da177e4 LT |
1685 | } |
1686 | ||
20346722 | 1687 | /* |
1688 | * Don't see link state interrupts on certain switches, so | |
1da177e4 LT |
1689 | * directly scheduling a link state task from here. |
1690 | */ | |
1691 | schedule_work(&nic->set_link_task); | |
1692 | ||
1da177e4 LT |
1693 | return SUCCESS; |
1694 | } | |
1695 | ||
20346722 | 1696 | /** |
1697 | * free_tx_buffers - Free all queued Tx buffers | |
1da177e4 | 1698 | * @nic : device private variable. |
20346722 | 1699 | * Description: |
1da177e4 | 1700 | * Free all queued Tx buffers. |
20346722 | 1701 | * Return Value: void |
1da177e4 LT |
1702 | */ |
1703 | ||
1704 | static void free_tx_buffers(struct s2io_nic *nic) | |
1705 | { | |
1706 | struct net_device *dev = nic->dev; | |
1707 | struct sk_buff *skb; | |
1708 | TxD_t *txdp; | |
1709 | int i, j; | |
1710 | mac_info_t *mac_control; | |
1711 | struct config_param *config; | |
1ddc50d4 | 1712 | int cnt = 0, frg_cnt; |
1da177e4 LT |
1713 | |
1714 | mac_control = &nic->mac_control; | |
1715 | config = &nic->config; | |
1716 | ||
1717 | for (i = 0; i < config->tx_fifo_num; i++) { | |
1718 | for (j = 0; j < config->tx_cfg[i].fifo_len - 1; j++) { | |
20346722 | 1719 | txdp = (TxD_t *) mac_control->fifos[i].list_info[j]. |
1da177e4 LT |
1720 | list_virt_addr; |
1721 | skb = | |
1722 | (struct sk_buff *) ((unsigned long) txdp-> | |
1723 | Host_Control); | |
1724 | if (skb == NULL) { | |
1ddc50d4 | 1725 | memset(txdp, 0, sizeof(TxD_t) * |
1726 | config->max_txds); | |
1da177e4 LT |
1727 | continue; |
1728 | } | |
1ddc50d4 | 1729 | frg_cnt = skb_shinfo(skb)->nr_frags; |
1730 | pci_unmap_single(nic->pdev, (dma_addr_t) | |
1731 | txdp->Buffer_Pointer, | |
1732 | skb->len - skb->data_len, | |
1733 | PCI_DMA_TODEVICE); | |
1734 | if (frg_cnt) { | |
1735 | TxD_t *temp; | |
1736 | temp = txdp; | |
1737 | txdp++; | |
1738 | for (j = 0; j < frg_cnt; j++, txdp++) { | |
1739 | skb_frag_t *frag = | |
1740 | &skb_shinfo(skb)->frags[j]; | |
1741 | pci_unmap_page(nic->pdev, | |
1742 | (dma_addr_t) | |
1743 | txdp-> | |
1744 | Buffer_Pointer, | |
1745 | frag->size, | |
1746 | PCI_DMA_TODEVICE); | |
1747 | } | |
1748 | txdp = temp; | |
1749 | } | |
1da177e4 | 1750 | dev_kfree_skb(skb); |
1ddc50d4 | 1751 | memset(txdp, 0, sizeof(TxD_t) * config->max_txds); |
1da177e4 LT |
1752 | cnt++; |
1753 | } | |
1754 | DBG_PRINT(INTR_DBG, | |
1755 | "%s:forcibly freeing %d skbs on FIFO%d\n", | |
1756 | dev->name, cnt, i); | |
20346722 | 1757 | mac_control->fifos[i].tx_curr_get_info.offset = 0; |
1758 | mac_control->fifos[i].tx_curr_put_info.offset = 0; | |
1da177e4 LT |
1759 | } |
1760 | } | |
1761 | ||
20346722 | 1762 | /** |
1763 | * stop_nic - To stop the nic | |
1da177e4 | 1764 | * @nic ; device private variable. |
20346722 | 1765 | * Description: |
1766 | * This function does exactly the opposite of what the start_nic() | |
1da177e4 LT |
1767 | * function does. This function is called to stop the device. |
1768 | * Return Value: | |
1769 | * void. | |
1770 | */ | |
1771 | ||
1772 | static void stop_nic(struct s2io_nic *nic) | |
1773 | { | |
1774 | XENA_dev_config_t __iomem *bar0 = nic->bar0; | |
1775 | register u64 val64 = 0; | |
1776 | u16 interruptible, i; | |
1777 | mac_info_t *mac_control; | |
1778 | struct config_param *config; | |
1779 | ||
1780 | mac_control = &nic->mac_control; | |
1781 | config = &nic->config; | |
1782 | ||
1783 | /* Disable all interrupts */ | |
1784 | interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR | TX_MAC_INTR | | |
5e25b9dd | 1785 | RX_MAC_INTR | MC_INTR; |
1da177e4 LT |
1786 | en_dis_able_nic_intrs(nic, interruptible, DISABLE_INTRS); |
1787 | ||
1788 | /* Disable PRCs */ | |
1789 | for (i = 0; i < config->rx_ring_num; i++) { | |
1790 | val64 = readq(&bar0->prc_ctrl_n[i]); | |
1791 | val64 &= ~((u64) PRC_CTRL_RC_ENABLED); | |
1792 | writeq(val64, &bar0->prc_ctrl_n[i]); | |
1793 | } | |
1794 | } | |
1795 | ||
20346722 | 1796 | /** |
1797 | * fill_rx_buffers - Allocates the Rx side skbs | |
1da177e4 | 1798 | * @nic: device private variable |
20346722 | 1799 | * @ring_no: ring number |
1800 | * Description: | |
1da177e4 LT |
1801 | * The function allocates Rx side skbs and puts the physical |
1802 | * address of these buffers into the RxD buffer pointers, so that the NIC | |
1803 | * can DMA the received frame into these locations. | |
1804 | * The NIC supports 3 receive modes, viz | |
1805 | * 1. single buffer, | |
1806 | * 2. three buffer and | |
1807 | * 3. Five buffer modes. | |
20346722 | 1808 | * Each mode defines how many fragments the received frame will be split |
1809 | * up into by the NIC. The frame is split into L3 header, L4 Header, | |
1da177e4 LT |
1810 | * L4 payload in three buffer mode and in 5 buffer mode, L4 payload itself |
1811 | * is split into 3 fragments. As of now only single buffer mode is | |
1812 | * supported. | |
1813 | * Return Value: | |
1814 | * SUCCESS on success or an appropriate -ve value on failure. | |
1815 | */ | |
1816 | ||
20346722 | 1817 | int fill_rx_buffers(struct s2io_nic *nic, int ring_no) |
1da177e4 LT |
1818 | { |
1819 | struct net_device *dev = nic->dev; | |
1820 | struct sk_buff *skb; | |
1821 | RxD_t *rxdp; | |
1822 | int off, off1, size, block_no, block_no1; | |
1823 | int offset, offset1; | |
1824 | u32 alloc_tab = 0; | |
20346722 | 1825 | u32 alloc_cnt; |
1da177e4 LT |
1826 | mac_info_t *mac_control; |
1827 | struct config_param *config; | |
1828 | #ifdef CONFIG_2BUFF_MODE | |
1829 | RxD_t *rxdpnext; | |
1830 | int nextblk; | |
20346722 | 1831 | u64 tmp; |
1da177e4 LT |
1832 | buffAdd_t *ba; |
1833 | dma_addr_t rxdpphys; | |
1834 | #endif | |
1835 | #ifndef CONFIG_S2IO_NAPI | |
1836 | unsigned long flags; | |
1837 | #endif | |
1838 | ||
1839 | mac_control = &nic->mac_control; | |
1840 | config = &nic->config; | |
20346722 | 1841 | alloc_cnt = mac_control->rings[ring_no].pkt_cnt - |
1842 | atomic_read(&nic->rx_bufs_left[ring_no]); | |
1da177e4 LT |
1843 | size = dev->mtu + HEADER_ETHERNET_II_802_3_SIZE + |
1844 | HEADER_802_2_SIZE + HEADER_SNAP_SIZE; | |
1845 | ||
1846 | while (alloc_tab < alloc_cnt) { | |
20346722 | 1847 | block_no = mac_control->rings[ring_no].rx_curr_put_info. |
1da177e4 | 1848 | block_index; |
20346722 | 1849 | block_no1 = mac_control->rings[ring_no].rx_curr_get_info. |
1da177e4 | 1850 | block_index; |
20346722 | 1851 | off = mac_control->rings[ring_no].rx_curr_put_info.offset; |
1852 | off1 = mac_control->rings[ring_no].rx_curr_get_info.offset; | |
1da177e4 LT |
1853 | #ifndef CONFIG_2BUFF_MODE |
1854 | offset = block_no * (MAX_RXDS_PER_BLOCK + 1) + off; | |
1855 | offset1 = block_no1 * (MAX_RXDS_PER_BLOCK + 1) + off1; | |
1856 | #else | |
1857 | offset = block_no * (MAX_RXDS_PER_BLOCK) + off; | |
1858 | offset1 = block_no1 * (MAX_RXDS_PER_BLOCK) + off1; | |
1859 | #endif | |
1860 | ||
20346722 | 1861 | rxdp = mac_control->rings[ring_no].rx_blocks[block_no]. |
1da177e4 LT |
1862 | block_virt_addr + off; |
1863 | if ((offset == offset1) && (rxdp->Host_Control)) { | |
1864 | DBG_PRINT(INTR_DBG, "%s: Get and Put", dev->name); | |
1865 | DBG_PRINT(INTR_DBG, " info equated\n"); | |
1866 | goto end; | |
1867 | } | |
1868 | #ifndef CONFIG_2BUFF_MODE | |
1869 | if (rxdp->Control_1 == END_OF_BLOCK) { | |
20346722 | 1870 | mac_control->rings[ring_no].rx_curr_put_info. |
1da177e4 | 1871 | block_index++; |
20346722 | 1872 | mac_control->rings[ring_no].rx_curr_put_info. |
1873 | block_index %= mac_control->rings[ring_no].block_count; | |
1874 | block_no = mac_control->rings[ring_no].rx_curr_put_info. | |
1875 | block_index; | |
1da177e4 LT |
1876 | off++; |
1877 | off %= (MAX_RXDS_PER_BLOCK + 1); | |
20346722 | 1878 | mac_control->rings[ring_no].rx_curr_put_info.offset = |
1da177e4 LT |
1879 | off; |
1880 | rxdp = (RxD_t *) ((unsigned long) rxdp->Control_2); | |
1881 | DBG_PRINT(INTR_DBG, "%s: Next block at: %p\n", | |
1882 | dev->name, rxdp); | |
1883 | } | |
1884 | #ifndef CONFIG_S2IO_NAPI | |
1885 | spin_lock_irqsave(&nic->put_lock, flags); | |
20346722 | 1886 | mac_control->rings[ring_no].put_pos = |
1da177e4 LT |
1887 | (block_no * (MAX_RXDS_PER_BLOCK + 1)) + off; |
1888 | spin_unlock_irqrestore(&nic->put_lock, flags); | |
1889 | #endif | |
1890 | #else | |
1891 | if (rxdp->Host_Control == END_OF_BLOCK) { | |
20346722 | 1892 | mac_control->rings[ring_no].rx_curr_put_info. |
1da177e4 | 1893 | block_index++; |
20346722 | 1894 | mac_control->rings[ring_no].rx_curr_put_info.block_index |
1895 | %= mac_control->rings[ring_no].block_count; | |
1896 | block_no = mac_control->rings[ring_no].rx_curr_put_info | |
1897 | .block_index; | |
1da177e4 LT |
1898 | off = 0; |
1899 | DBG_PRINT(INTR_DBG, "%s: block%d at: 0x%llx\n", | |
1900 | dev->name, block_no, | |
1901 | (unsigned long long) rxdp->Control_1); | |
20346722 | 1902 | mac_control->rings[ring_no].rx_curr_put_info.offset = |
1da177e4 | 1903 | off; |
20346722 | 1904 | rxdp = mac_control->rings[ring_no].rx_blocks[block_no]. |
1da177e4 LT |
1905 | block_virt_addr; |
1906 | } | |
1907 | #ifndef CONFIG_S2IO_NAPI | |
1908 | spin_lock_irqsave(&nic->put_lock, flags); | |
20346722 | 1909 | mac_control->rings[ring_no].put_pos = (block_no * |
1da177e4 LT |
1910 | (MAX_RXDS_PER_BLOCK + 1)) + off; |
1911 | spin_unlock_irqrestore(&nic->put_lock, flags); | |
1912 | #endif | |
1913 | #endif | |
1914 | ||
1915 | #ifndef CONFIG_2BUFF_MODE | |
1916 | if (rxdp->Control_1 & RXD_OWN_XENA) | |
1917 | #else | |
1918 | if (rxdp->Control_2 & BIT(0)) | |
1919 | #endif | |
1920 | { | |
20346722 | 1921 | mac_control->rings[ring_no].rx_curr_put_info. |
1da177e4 LT |
1922 | offset = off; |
1923 | goto end; | |
1924 | } | |
1925 | #ifdef CONFIG_2BUFF_MODE | |
20346722 | 1926 | /* |
1927 | * RxDs Spanning cache lines will be replenished only | |
1928 | * if the succeeding RxD is also owned by Host. It | |
1929 | * will always be the ((8*i)+3) and ((8*i)+6) | |
1930 | * descriptors for the 48 byte descriptor. The offending | |
1da177e4 LT |
1931 | * decsriptor is of-course the 3rd descriptor. |
1932 | */ | |
20346722 | 1933 | rxdpphys = mac_control->rings[ring_no].rx_blocks[block_no]. |
1da177e4 LT |
1934 | block_dma_addr + (off * sizeof(RxD_t)); |
1935 | if (((u64) (rxdpphys)) % 128 > 80) { | |
20346722 | 1936 | rxdpnext = mac_control->rings[ring_no].rx_blocks[block_no]. |
1da177e4 LT |
1937 | block_virt_addr + (off + 1); |
1938 | if (rxdpnext->Host_Control == END_OF_BLOCK) { | |
1939 | nextblk = (block_no + 1) % | |
20346722 | 1940 | (mac_control->rings[ring_no].block_count); |
1941 | rxdpnext = mac_control->rings[ring_no].rx_blocks | |
1da177e4 LT |
1942 | [nextblk].block_virt_addr; |
1943 | } | |
1944 | if (rxdpnext->Control_2 & BIT(0)) | |
1945 | goto end; | |
1946 | } | |
1947 | #endif | |
1948 | ||
1949 | #ifndef CONFIG_2BUFF_MODE | |
1950 | skb = dev_alloc_skb(size + NET_IP_ALIGN); | |
1951 | #else | |
1952 | skb = dev_alloc_skb(dev->mtu + ALIGN_SIZE + BUF0_LEN + 4); | |
1953 | #endif | |
1954 | if (!skb) { | |
1955 | DBG_PRINT(ERR_DBG, "%s: Out of ", dev->name); | |
1956 | DBG_PRINT(ERR_DBG, "memory to allocate SKBs\n"); | |
1957 | return -ENOMEM; | |
1958 | } | |
1959 | #ifndef CONFIG_2BUFF_MODE | |
1960 | skb_reserve(skb, NET_IP_ALIGN); | |
1961 | memset(rxdp, 0, sizeof(RxD_t)); | |
1962 | rxdp->Buffer0_ptr = pci_map_single | |
1963 | (nic->pdev, skb->data, size, PCI_DMA_FROMDEVICE); | |
1964 | rxdp->Control_2 &= (~MASK_BUFFER0_SIZE); | |
1965 | rxdp->Control_2 |= SET_BUFFER0_SIZE(size); | |
1966 | rxdp->Host_Control = (unsigned long) (skb); | |
1967 | rxdp->Control_1 |= RXD_OWN_XENA; | |
1968 | off++; | |
1969 | off %= (MAX_RXDS_PER_BLOCK + 1); | |
20346722 | 1970 | mac_control->rings[ring_no].rx_curr_put_info.offset = off; |
1da177e4 | 1971 | #else |
20346722 | 1972 | ba = &mac_control->rings[ring_no].ba[block_no][off]; |
1da177e4 | 1973 | skb_reserve(skb, BUF0_LEN); |
689be439 DM |
1974 | tmp = ((unsigned long) skb->data & ALIGN_SIZE); |
1975 | if (tmp) | |
1976 | skb_reserve(skb, (ALIGN_SIZE + 1) - tmp); | |
1da177e4 LT |
1977 | |
1978 | memset(rxdp, 0, sizeof(RxD_t)); | |
1979 | rxdp->Buffer2_ptr = pci_map_single | |
1980 | (nic->pdev, skb->data, dev->mtu + BUF0_LEN + 4, | |
1981 | PCI_DMA_FROMDEVICE); | |
1982 | rxdp->Buffer0_ptr = | |
1983 | pci_map_single(nic->pdev, ba->ba_0, BUF0_LEN, | |
1984 | PCI_DMA_FROMDEVICE); | |
1985 | rxdp->Buffer1_ptr = | |
1986 | pci_map_single(nic->pdev, ba->ba_1, BUF1_LEN, | |
1987 | PCI_DMA_FROMDEVICE); | |
1988 | ||
1989 | rxdp->Control_2 = SET_BUFFER2_SIZE(dev->mtu + 4); | |
1990 | rxdp->Control_2 |= SET_BUFFER0_SIZE(BUF0_LEN); | |
1991 | rxdp->Control_2 |= SET_BUFFER1_SIZE(1); /* dummy. */ | |
1992 | rxdp->Control_2 |= BIT(0); /* Set Buffer_Empty bit. */ | |
1993 | rxdp->Host_Control = (u64) ((unsigned long) (skb)); | |
1994 | rxdp->Control_1 |= RXD_OWN_XENA; | |
1995 | off++; | |
20346722 | 1996 | mac_control->rings[ring_no].rx_curr_put_info.offset = off; |
1da177e4 | 1997 | #endif |
5e25b9dd | 1998 | rxdp->Control_2 |= SET_RXD_MARKER; |
20346722 | 1999 | |
1da177e4 LT |
2000 | atomic_inc(&nic->rx_bufs_left[ring_no]); |
2001 | alloc_tab++; | |
2002 | } | |
2003 | ||
2004 | end: | |
2005 | return SUCCESS; | |
2006 | } | |
2007 | ||
2008 | /** | |
20346722 | 2009 | * free_rx_buffers - Frees all Rx buffers |
1da177e4 | 2010 | * @sp: device private variable. |
20346722 | 2011 | * Description: |
1da177e4 LT |
2012 | * This function will free all Rx buffers allocated by host. |
2013 | * Return Value: | |
2014 | * NONE. | |
2015 | */ | |
2016 | ||
2017 | static void free_rx_buffers(struct s2io_nic *sp) | |
2018 | { | |
2019 | struct net_device *dev = sp->dev; | |
2020 | int i, j, blk = 0, off, buf_cnt = 0; | |
2021 | RxD_t *rxdp; | |
2022 | struct sk_buff *skb; | |
2023 | mac_info_t *mac_control; | |
2024 | struct config_param *config; | |
2025 | #ifdef CONFIG_2BUFF_MODE | |
2026 | buffAdd_t *ba; | |
2027 | #endif | |
2028 | ||
2029 | mac_control = &sp->mac_control; | |
2030 | config = &sp->config; | |
2031 | ||
2032 | for (i = 0; i < config->rx_ring_num; i++) { | |
2033 | for (j = 0, blk = 0; j < config->rx_cfg[i].num_rxd; j++) { | |
2034 | off = j % (MAX_RXDS_PER_BLOCK + 1); | |
20346722 | 2035 | rxdp = mac_control->rings[i].rx_blocks[blk]. |
2036 | block_virt_addr + off; | |
1da177e4 LT |
2037 | |
2038 | #ifndef CONFIG_2BUFF_MODE | |
2039 | if (rxdp->Control_1 == END_OF_BLOCK) { | |
2040 | rxdp = | |
2041 | (RxD_t *) ((unsigned long) rxdp-> | |
2042 | Control_2); | |
2043 | j++; | |
2044 | blk++; | |
2045 | } | |
2046 | #else | |
2047 | if (rxdp->Host_Control == END_OF_BLOCK) { | |
2048 | blk++; | |
2049 | continue; | |
2050 | } | |
2051 | #endif | |
2052 | ||
2053 | if (!(rxdp->Control_1 & RXD_OWN_XENA)) { | |
2054 | memset(rxdp, 0, sizeof(RxD_t)); | |
2055 | continue; | |
2056 | } | |
2057 | ||
2058 | skb = | |
2059 | (struct sk_buff *) ((unsigned long) rxdp-> | |
2060 | Host_Control); | |
2061 | if (skb) { | |
2062 | #ifndef CONFIG_2BUFF_MODE | |
2063 | pci_unmap_single(sp->pdev, (dma_addr_t) | |
2064 | rxdp->Buffer0_ptr, | |
2065 | dev->mtu + | |
2066 | HEADER_ETHERNET_II_802_3_SIZE | |
2067 | + HEADER_802_2_SIZE + | |
2068 | HEADER_SNAP_SIZE, | |
2069 | PCI_DMA_FROMDEVICE); | |
2070 | #else | |
20346722 | 2071 | ba = &mac_control->rings[i].ba[blk][off]; |
1da177e4 LT |
2072 | pci_unmap_single(sp->pdev, (dma_addr_t) |
2073 | rxdp->Buffer0_ptr, | |
2074 | BUF0_LEN, | |
2075 | PCI_DMA_FROMDEVICE); | |
2076 | pci_unmap_single(sp->pdev, (dma_addr_t) | |
2077 | rxdp->Buffer1_ptr, | |
2078 | BUF1_LEN, | |
2079 | PCI_DMA_FROMDEVICE); | |
2080 | pci_unmap_single(sp->pdev, (dma_addr_t) | |
2081 | rxdp->Buffer2_ptr, | |
2082 | dev->mtu + BUF0_LEN + 4, | |
2083 | PCI_DMA_FROMDEVICE); | |
2084 | #endif | |
2085 | dev_kfree_skb(skb); | |
2086 | atomic_dec(&sp->rx_bufs_left[i]); | |
2087 | buf_cnt++; | |
2088 | } | |
2089 | memset(rxdp, 0, sizeof(RxD_t)); | |
2090 | } | |
20346722 | 2091 | mac_control->rings[i].rx_curr_put_info.block_index = 0; |
2092 | mac_control->rings[i].rx_curr_get_info.block_index = 0; | |
2093 | mac_control->rings[i].rx_curr_put_info.offset = 0; | |
2094 | mac_control->rings[i].rx_curr_get_info.offset = 0; | |
1da177e4 LT |
2095 | atomic_set(&sp->rx_bufs_left[i], 0); |
2096 | DBG_PRINT(INIT_DBG, "%s:Freed 0x%x Rx Buffers on ring%d\n", | |
2097 | dev->name, buf_cnt, i); | |
2098 | } | |
2099 | } | |
2100 | ||
2101 | /** | |
2102 | * s2io_poll - Rx interrupt handler for NAPI support | |
2103 | * @dev : pointer to the device structure. | |
20346722 | 2104 | * @budget : The number of packets that were budgeted to be processed |
1da177e4 LT |
2105 | * during one pass through the 'Poll" function. |
2106 | * Description: | |
2107 | * Comes into picture only if NAPI support has been incorporated. It does | |
2108 | * the same thing that rx_intr_handler does, but not in a interrupt context | |
2109 | * also It will process only a given number of packets. | |
2110 | * Return value: | |
2111 | * 0 on success and 1 if there are No Rx packets to be processed. | |
2112 | */ | |
2113 | ||
20346722 | 2114 | #if defined(CONFIG_S2IO_NAPI) |
1da177e4 LT |
2115 | static int s2io_poll(struct net_device *dev, int *budget) |
2116 | { | |
2117 | nic_t *nic = dev->priv; | |
20346722 | 2118 | int pkt_cnt = 0, org_pkts_to_process; |
1da177e4 LT |
2119 | mac_info_t *mac_control; |
2120 | struct config_param *config; | |
20346722 | 2121 | XENA_dev_config_t *bar0 = (XENA_dev_config_t *) nic->bar0; |
2122 | u64 val64; | |
2123 | int i; | |
1da177e4 | 2124 | |
7ba013ac | 2125 | atomic_inc(&nic->isr_cnt); |
1da177e4 LT |
2126 | mac_control = &nic->mac_control; |
2127 | config = &nic->config; | |
2128 | ||
20346722 | 2129 | nic->pkts_to_process = *budget; |
2130 | if (nic->pkts_to_process > dev->quota) | |
2131 | nic->pkts_to_process = dev->quota; | |
2132 | org_pkts_to_process = nic->pkts_to_process; | |
1da177e4 LT |
2133 | |
2134 | val64 = readq(&bar0->rx_traffic_int); | |
2135 | writeq(val64, &bar0->rx_traffic_int); | |
2136 | ||
2137 | for (i = 0; i < config->rx_ring_num; i++) { | |
20346722 | 2138 | rx_intr_handler(&mac_control->rings[i]); |
2139 | pkt_cnt = org_pkts_to_process - nic->pkts_to_process; | |
2140 | if (!nic->pkts_to_process) { | |
2141 | /* Quota for the current iteration has been met */ | |
2142 | goto no_rx; | |
1da177e4 | 2143 | } |
1da177e4 LT |
2144 | } |
2145 | if (!pkt_cnt) | |
2146 | pkt_cnt = 1; | |
2147 | ||
2148 | dev->quota -= pkt_cnt; | |
2149 | *budget -= pkt_cnt; | |
2150 | netif_rx_complete(dev); | |
2151 | ||
2152 | for (i = 0; i < config->rx_ring_num; i++) { | |
2153 | if (fill_rx_buffers(nic, i) == -ENOMEM) { | |
2154 | DBG_PRINT(ERR_DBG, "%s:Out of memory", dev->name); | |
2155 | DBG_PRINT(ERR_DBG, " in Rx Poll!!\n"); | |
2156 | break; | |
2157 | } | |
2158 | } | |
2159 | /* Re enable the Rx interrupts. */ | |
2160 | en_dis_able_nic_intrs(nic, RX_TRAFFIC_INTR, ENABLE_INTRS); | |
7ba013ac | 2161 | atomic_dec(&nic->isr_cnt); |
1da177e4 LT |
2162 | return 0; |
2163 | ||
20346722 | 2164 | no_rx: |
1da177e4 LT |
2165 | dev->quota -= pkt_cnt; |
2166 | *budget -= pkt_cnt; | |
2167 | ||
2168 | for (i = 0; i < config->rx_ring_num; i++) { | |
2169 | if (fill_rx_buffers(nic, i) == -ENOMEM) { | |
2170 | DBG_PRINT(ERR_DBG, "%s:Out of memory", dev->name); | |
2171 | DBG_PRINT(ERR_DBG, " in Rx Poll!!\n"); | |
2172 | break; | |
2173 | } | |
2174 | } | |
7ba013ac | 2175 | atomic_dec(&nic->isr_cnt); |
1da177e4 LT |
2176 | return 1; |
2177 | } | |
20346722 | 2178 | #endif |
2179 | ||
2180 | /** | |
1da177e4 LT |
2181 | * rx_intr_handler - Rx interrupt handler |
2182 | * @nic: device private variable. | |
20346722 | 2183 | * Description: |
2184 | * If the interrupt is because of a received frame or if the | |
1da177e4 | 2185 | * receive ring contains fresh as yet un-processed frames,this function is |
20346722 | 2186 | * called. It picks out the RxD at which place the last Rx processing had |
2187 | * stopped and sends the skb to the OSM's Rx handler and then increments | |
1da177e4 LT |
2188 | * the offset. |
2189 | * Return Value: | |
2190 | * NONE. | |
2191 | */ | |
20346722 | 2192 | static void rx_intr_handler(ring_info_t *ring_data) |
1da177e4 | 2193 | { |
20346722 | 2194 | nic_t *nic = ring_data->nic; |
1da177e4 | 2195 | struct net_device *dev = (struct net_device *) nic->dev; |
20346722 | 2196 | XENA_dev_config_t __iomem *bar0 = nic->bar0; |
2197 | int get_block, get_offset, put_block, put_offset, ring_bufs; | |
1da177e4 LT |
2198 | rx_curr_get_info_t get_info, put_info; |
2199 | RxD_t *rxdp; | |
2200 | struct sk_buff *skb; | |
20346722 | 2201 | #ifndef CONFIG_S2IO_NAPI |
2202 | int pkt_cnt = 0; | |
1da177e4 | 2203 | #endif |
20346722 | 2204 | register u64 val64; |
1da177e4 | 2205 | |
7ba013ac | 2206 | spin_lock(&nic->rx_lock); |
2207 | if (atomic_read(&nic->card_state) == CARD_DOWN) { | |
2208 | DBG_PRINT(ERR_DBG, "%s: %s going down for reset\n", | |
2209 | __FUNCTION__, dev->name); | |
2210 | spin_unlock(&nic->rx_lock); | |
2211 | } | |
2212 | ||
20346722 | 2213 | /* |
2214 | * rx_traffic_int reg is an R1 register, hence we read and write | |
2215 | * back the same value in the register to clear it | |
1da177e4 | 2216 | */ |
20346722 | 2217 | val64 = readq(&bar0->tx_traffic_int); |
2218 | writeq(val64, &bar0->tx_traffic_int); | |
1da177e4 | 2219 | |
20346722 | 2220 | get_info = ring_data->rx_curr_get_info; |
2221 | get_block = get_info.block_index; | |
2222 | put_info = ring_data->rx_curr_put_info; | |
2223 | put_block = put_info.block_index; | |
2224 | ring_bufs = get_info.ring_len+1; | |
2225 | rxdp = ring_data->rx_blocks[get_block].block_virt_addr + | |
1da177e4 | 2226 | get_info.offset; |
20346722 | 2227 | get_offset = (get_block * (MAX_RXDS_PER_BLOCK + 1)) + |
2228 | get_info.offset; | |
2229 | #ifndef CONFIG_S2IO_NAPI | |
2230 | spin_lock(&nic->put_lock); | |
2231 | put_offset = ring_data->put_pos; | |
2232 | spin_unlock(&nic->put_lock); | |
2233 | #else | |
2234 | put_offset = (put_block * (MAX_RXDS_PER_BLOCK + 1)) + | |
2235 | put_info.offset; | |
2236 | #endif | |
5e25b9dd | 2237 | while (RXD_IS_UP2DT(rxdp) && |
2238 | (((get_offset + 1) % ring_bufs) != put_offset)) { | |
20346722 | 2239 | skb = (struct sk_buff *) ((unsigned long)rxdp->Host_Control); |
2240 | if (skb == NULL) { | |
2241 | DBG_PRINT(ERR_DBG, "%s: The skb is ", | |
2242 | dev->name); | |
2243 | DBG_PRINT(ERR_DBG, "Null in Rx Intr\n"); | |
7ba013ac | 2244 | spin_unlock(&nic->rx_lock); |
20346722 | 2245 | return; |
1da177e4 | 2246 | } |
20346722 | 2247 | #ifndef CONFIG_2BUFF_MODE |
2248 | pci_unmap_single(nic->pdev, (dma_addr_t) | |
2249 | rxdp->Buffer0_ptr, | |
2250 | dev->mtu + | |
2251 | HEADER_ETHERNET_II_802_3_SIZE + | |
2252 | HEADER_802_2_SIZE + | |
2253 | HEADER_SNAP_SIZE, | |
2254 | PCI_DMA_FROMDEVICE); | |
1da177e4 | 2255 | #else |
20346722 | 2256 | pci_unmap_single(nic->pdev, (dma_addr_t) |
2257 | rxdp->Buffer0_ptr, | |
2258 | BUF0_LEN, PCI_DMA_FROMDEVICE); | |
2259 | pci_unmap_single(nic->pdev, (dma_addr_t) | |
2260 | rxdp->Buffer1_ptr, | |
2261 | BUF1_LEN, PCI_DMA_FROMDEVICE); | |
2262 | pci_unmap_single(nic->pdev, (dma_addr_t) | |
2263 | rxdp->Buffer2_ptr, | |
2264 | dev->mtu + BUF0_LEN + 4, | |
2265 | PCI_DMA_FROMDEVICE); | |
2266 | #endif | |
2267 | rx_osm_handler(ring_data, rxdp); | |
2268 | get_info.offset++; | |
2269 | ring_data->rx_curr_get_info.offset = | |
1da177e4 | 2270 | get_info.offset; |
20346722 | 2271 | rxdp = ring_data->rx_blocks[get_block].block_virt_addr + |
2272 | get_info.offset; | |
2273 | if (get_info.offset && | |
2274 | (!(get_info.offset % MAX_RXDS_PER_BLOCK))) { | |
2275 | get_info.offset = 0; | |
2276 | ring_data->rx_curr_get_info.offset | |
2277 | = get_info.offset; | |
2278 | get_block++; | |
2279 | get_block %= ring_data->block_count; | |
2280 | ring_data->rx_curr_get_info.block_index | |
2281 | = get_block; | |
2282 | rxdp = ring_data->rx_blocks[get_block].block_virt_addr; | |
2283 | } | |
1da177e4 | 2284 | |
20346722 | 2285 | get_offset = (get_block * (MAX_RXDS_PER_BLOCK + 1)) + |
1da177e4 | 2286 | get_info.offset; |
20346722 | 2287 | #ifdef CONFIG_S2IO_NAPI |
2288 | nic->pkts_to_process -= 1; | |
2289 | if (!nic->pkts_to_process) | |
2290 | break; | |
2291 | #else | |
2292 | pkt_cnt++; | |
1da177e4 LT |
2293 | if ((indicate_max_pkts) && (pkt_cnt > indicate_max_pkts)) |
2294 | break; | |
20346722 | 2295 | #endif |
1da177e4 | 2296 | } |
7ba013ac | 2297 | spin_unlock(&nic->rx_lock); |
1da177e4 | 2298 | } |
20346722 | 2299 | |
2300 | /** | |
1da177e4 LT |
2301 | * tx_intr_handler - Transmit interrupt handler |
2302 | * @nic : device private variable | |
20346722 | 2303 | * Description: |
2304 | * If an interrupt was raised to indicate DMA complete of the | |
2305 | * Tx packet, this function is called. It identifies the last TxD | |
2306 | * whose buffer was freed and frees all skbs whose data have already | |
1da177e4 LT |
2307 | * DMA'ed into the NICs internal memory. |
2308 | * Return Value: | |
2309 | * NONE | |
2310 | */ | |
2311 | ||
20346722 | 2312 | static void tx_intr_handler(fifo_info_t *fifo_data) |
1da177e4 | 2313 | { |
20346722 | 2314 | nic_t *nic = fifo_data->nic; |
1da177e4 LT |
2315 | XENA_dev_config_t __iomem *bar0 = nic->bar0; |
2316 | struct net_device *dev = (struct net_device *) nic->dev; | |
2317 | tx_curr_get_info_t get_info, put_info; | |
2318 | struct sk_buff *skb; | |
2319 | TxD_t *txdlp; | |
1da177e4 | 2320 | u16 j, frg_cnt; |
20346722 | 2321 | register u64 val64 = 0; |
1da177e4 | 2322 | |
20346722 | 2323 | /* |
2324 | * tx_traffic_int reg is an R1 register, hence we read and write | |
2325 | * back the same value in the register to clear it | |
1da177e4 LT |
2326 | */ |
2327 | val64 = readq(&bar0->tx_traffic_int); | |
2328 | writeq(val64, &bar0->tx_traffic_int); | |
2329 | ||
20346722 | 2330 | get_info = fifo_data->tx_curr_get_info; |
2331 | put_info = fifo_data->tx_curr_put_info; | |
2332 | txdlp = (TxD_t *) fifo_data->list_info[get_info.offset]. | |
2333 | list_virt_addr; | |
2334 | while ((!(txdlp->Control_1 & TXD_LIST_OWN_XENA)) && | |
2335 | (get_info.offset != put_info.offset) && | |
2336 | (txdlp->Host_Control)) { | |
2337 | /* Check for TxD errors */ | |
2338 | if (txdlp->Control_1 & TXD_T_CODE) { | |
2339 | unsigned long long err; | |
2340 | err = txdlp->Control_1 & TXD_T_CODE; | |
2341 | DBG_PRINT(ERR_DBG, "***TxD error %llx\n", | |
2342 | err); | |
2343 | } | |
1da177e4 | 2344 | |
20346722 | 2345 | skb = (struct sk_buff *) ((unsigned long) |
2346 | txdlp->Host_Control); | |
2347 | if (skb == NULL) { | |
2348 | DBG_PRINT(ERR_DBG, "%s: Null skb ", | |
2349 | __FUNCTION__); | |
2350 | DBG_PRINT(ERR_DBG, "in Tx Free Intr\n"); | |
2351 | return; | |
2352 | } | |
2353 | ||
2354 | frg_cnt = skb_shinfo(skb)->nr_frags; | |
2355 | nic->tx_pkt_count++; | |
2356 | ||
2357 | pci_unmap_single(nic->pdev, (dma_addr_t) | |
2358 | txdlp->Buffer_Pointer, | |
2359 | skb->len - skb->data_len, | |
2360 | PCI_DMA_TODEVICE); | |
2361 | if (frg_cnt) { | |
2362 | TxD_t *temp; | |
2363 | temp = txdlp; | |
2364 | txdlp++; | |
2365 | for (j = 0; j < frg_cnt; j++, txdlp++) { | |
2366 | skb_frag_t *frag = | |
2367 | &skb_shinfo(skb)->frags[j]; | |
2368 | pci_unmap_page(nic->pdev, | |
2369 | (dma_addr_t) | |
2370 | txdlp-> | |
2371 | Buffer_Pointer, | |
2372 | frag->size, | |
2373 | PCI_DMA_TODEVICE); | |
1da177e4 | 2374 | } |
20346722 | 2375 | txdlp = temp; |
1da177e4 | 2376 | } |
20346722 | 2377 | memset(txdlp, 0, |
2378 | (sizeof(TxD_t) * fifo_data->max_txds)); | |
2379 | ||
2380 | /* Updating the statistics block */ | |
20346722 | 2381 | nic->stats.tx_bytes += skb->len; |
2382 | dev_kfree_skb_irq(skb); | |
2383 | ||
2384 | get_info.offset++; | |
2385 | get_info.offset %= get_info.fifo_len + 1; | |
2386 | txdlp = (TxD_t *) fifo_data->list_info | |
2387 | [get_info.offset].list_virt_addr; | |
2388 | fifo_data->tx_curr_get_info.offset = | |
2389 | get_info.offset; | |
1da177e4 LT |
2390 | } |
2391 | ||
2392 | spin_lock(&nic->tx_lock); | |
2393 | if (netif_queue_stopped(dev)) | |
2394 | netif_wake_queue(dev); | |
2395 | spin_unlock(&nic->tx_lock); | |
2396 | } | |
2397 | ||
20346722 | 2398 | /** |
1da177e4 LT |
2399 | * alarm_intr_handler - Alarm Interrrupt handler |
2400 | * @nic: device private variable | |
20346722 | 2401 | * Description: If the interrupt was neither because of Rx packet or Tx |
1da177e4 | 2402 | * complete, this function is called. If the interrupt was to indicate |
20346722 | 2403 | * a loss of link, the OSM link status handler is invoked for any other |
2404 | * alarm interrupt the block that raised the interrupt is displayed | |
1da177e4 LT |
2405 | * and a H/W reset is issued. |
2406 | * Return Value: | |
2407 | * NONE | |
2408 | */ | |
2409 | ||
2410 | static void alarm_intr_handler(struct s2io_nic *nic) | |
2411 | { | |
2412 | struct net_device *dev = (struct net_device *) nic->dev; | |
2413 | XENA_dev_config_t __iomem *bar0 = nic->bar0; | |
2414 | register u64 val64 = 0, err_reg = 0; | |
2415 | ||
2416 | /* Handling link status change error Intr */ | |
2417 | err_reg = readq(&bar0->mac_rmac_err_reg); | |
2418 | writeq(err_reg, &bar0->mac_rmac_err_reg); | |
2419 | if (err_reg & RMAC_LINK_STATE_CHANGE_INT) { | |
2420 | schedule_work(&nic->set_link_task); | |
2421 | } | |
2422 | ||
5e25b9dd | 2423 | /* Handling Ecc errors */ |
2424 | val64 = readq(&bar0->mc_err_reg); | |
2425 | writeq(val64, &bar0->mc_err_reg); | |
2426 | if (val64 & (MC_ERR_REG_ECC_ALL_SNG | MC_ERR_REG_ECC_ALL_DBL)) { | |
2427 | if (val64 & MC_ERR_REG_ECC_ALL_DBL) { | |
7ba013ac | 2428 | nic->mac_control.stats_info->sw_stat. |
2429 | double_ecc_errs++; | |
5e25b9dd | 2430 | DBG_PRINT(ERR_DBG, "%s: Device indicates ", |
2431 | dev->name); | |
2432 | DBG_PRINT(ERR_DBG, "double ECC error!!\n"); | |
2433 | netif_stop_queue(dev); | |
2434 | schedule_work(&nic->rst_timer_task); | |
2435 | } else { | |
7ba013ac | 2436 | nic->mac_control.stats_info->sw_stat. |
2437 | single_ecc_errs++; | |
5e25b9dd | 2438 | } |
2439 | } | |
2440 | ||
1da177e4 LT |
2441 | /* In case of a serious error, the device will be Reset. */ |
2442 | val64 = readq(&bar0->serr_source); | |
2443 | if (val64 & SERR_SOURCE_ANY) { | |
2444 | DBG_PRINT(ERR_DBG, "%s: Device indicates ", dev->name); | |
2445 | DBG_PRINT(ERR_DBG, "serious error!!\n"); | |
2446 | netif_stop_queue(dev); | |
2447 | schedule_work(&nic->rst_timer_task); | |
2448 | } | |
2449 | ||
2450 | /* | |
2451 | * Also as mentioned in the latest Errata sheets if the PCC_FB_ECC | |
2452 | * Error occurs, the adapter will be recycled by disabling the | |
20346722 | 2453 | * adapter enable bit and enabling it again after the device |
1da177e4 LT |
2454 | * becomes Quiescent. |
2455 | */ | |
2456 | val64 = readq(&bar0->pcc_err_reg); | |
2457 | writeq(val64, &bar0->pcc_err_reg); | |
2458 | if (val64 & PCC_FB_ECC_DB_ERR) { | |
2459 | u64 ac = readq(&bar0->adapter_control); | |
2460 | ac &= ~(ADAPTER_CNTL_EN); | |
2461 | writeq(ac, &bar0->adapter_control); | |
2462 | ac = readq(&bar0->adapter_control); | |
2463 | schedule_work(&nic->set_link_task); | |
2464 | } | |
2465 | ||
2466 | /* Other type of interrupts are not being handled now, TODO */ | |
2467 | } | |
2468 | ||
20346722 | 2469 | /** |
1da177e4 | 2470 | * wait_for_cmd_complete - waits for a command to complete. |
20346722 | 2471 | * @sp : private member of the device structure, which is a pointer to the |
1da177e4 | 2472 | * s2io_nic structure. |
20346722 | 2473 | * Description: Function that waits for a command to Write into RMAC |
2474 | * ADDR DATA registers to be completed and returns either success or | |
2475 | * error depending on whether the command was complete or not. | |
1da177e4 LT |
2476 | * Return value: |
2477 | * SUCCESS on success and FAILURE on failure. | |
2478 | */ | |
2479 | ||
20346722 | 2480 | int wait_for_cmd_complete(nic_t * sp) |
1da177e4 LT |
2481 | { |
2482 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
2483 | int ret = FAILURE, cnt = 0; | |
2484 | u64 val64; | |
2485 | ||
2486 | while (TRUE) { | |
2487 | val64 = readq(&bar0->rmac_addr_cmd_mem); | |
2488 | if (!(val64 & RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING)) { | |
2489 | ret = SUCCESS; | |
2490 | break; | |
2491 | } | |
2492 | msleep(50); | |
2493 | if (cnt++ > 10) | |
2494 | break; | |
2495 | } | |
2496 | ||
2497 | return ret; | |
2498 | } | |
2499 | ||
20346722 | 2500 | /** |
2501 | * s2io_reset - Resets the card. | |
1da177e4 LT |
2502 | * @sp : private member of the device structure. |
2503 | * Description: Function to Reset the card. This function then also | |
20346722 | 2504 | * restores the previously saved PCI configuration space registers as |
1da177e4 LT |
2505 | * the card reset also resets the configuration space. |
2506 | * Return value: | |
2507 | * void. | |
2508 | */ | |
2509 | ||
20346722 | 2510 | void s2io_reset(nic_t * sp) |
1da177e4 LT |
2511 | { |
2512 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
2513 | u64 val64; | |
5e25b9dd | 2514 | u16 subid, pci_cmd; |
1da177e4 LT |
2515 | |
2516 | val64 = SW_RESET_ALL; | |
2517 | writeq(val64, &bar0->sw_reset); | |
2518 | ||
20346722 | 2519 | /* |
2520 | * At this stage, if the PCI write is indeed completed, the | |
2521 | * card is reset and so is the PCI Config space of the device. | |
2522 | * So a read cannot be issued at this stage on any of the | |
1da177e4 LT |
2523 | * registers to ensure the write into "sw_reset" register |
2524 | * has gone through. | |
2525 | * Question: Is there any system call that will explicitly force | |
2526 | * all the write commands still pending on the bus to be pushed | |
2527 | * through? | |
2528 | * As of now I'am just giving a 250ms delay and hoping that the | |
2529 | * PCI write to sw_reset register is done by this time. | |
2530 | */ | |
2531 | msleep(250); | |
2532 | ||
2533 | /* Restore the PCI state saved during initializarion. */ | |
2534 | pci_restore_state(sp->pdev); | |
20346722 | 2535 | |
1da177e4 LT |
2536 | s2io_init_pci(sp); |
2537 | ||
2538 | msleep(250); | |
2539 | ||
20346722 | 2540 | /* Set swapper to enable I/O register access */ |
2541 | s2io_set_swapper(sp); | |
2542 | ||
5e25b9dd | 2543 | /* Clear certain PCI/PCI-X fields after reset */ |
2544 | pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd); | |
2545 | pci_cmd &= 0x7FFF; /* Clear parity err detect bit */ | |
2546 | pci_write_config_word(sp->pdev, PCI_COMMAND, pci_cmd); | |
2547 | ||
2548 | val64 = readq(&bar0->txpic_int_reg); | |
2549 | val64 &= ~BIT(62); /* Clearing PCI_STATUS error reflected here */ | |
2550 | writeq(val64, &bar0->txpic_int_reg); | |
2551 | ||
2552 | /* Clearing PCIX Ecc status register */ | |
2553 | pci_write_config_dword(sp->pdev, 0x68, 0); | |
2554 | ||
20346722 | 2555 | /* Reset device statistics maintained by OS */ |
2556 | memset(&sp->stats, 0, sizeof (struct net_device_stats)); | |
2557 | ||
1da177e4 LT |
2558 | /* SXE-002: Configure link and activity LED to turn it off */ |
2559 | subid = sp->pdev->subsystem_device; | |
2560 | if ((subid & 0xFF) >= 0x07) { | |
2561 | val64 = readq(&bar0->gpio_control); | |
2562 | val64 |= 0x0000800000000000ULL; | |
2563 | writeq(val64, &bar0->gpio_control); | |
2564 | val64 = 0x0411040400000000ULL; | |
20346722 | 2565 | writeq(val64, (void __iomem *) ((u8 *) bar0 + 0x2700)); |
1da177e4 LT |
2566 | } |
2567 | ||
2568 | sp->device_enabled_once = FALSE; | |
2569 | } | |
2570 | ||
2571 | /** | |
20346722 | 2572 | * s2io_set_swapper - to set the swapper controle on the card |
2573 | * @sp : private member of the device structure, | |
1da177e4 | 2574 | * pointer to the s2io_nic structure. |
20346722 | 2575 | * Description: Function to set the swapper control on the card |
1da177e4 LT |
2576 | * correctly depending on the 'endianness' of the system. |
2577 | * Return value: | |
2578 | * SUCCESS on success and FAILURE on failure. | |
2579 | */ | |
2580 | ||
20346722 | 2581 | int s2io_set_swapper(nic_t * sp) |
1da177e4 LT |
2582 | { |
2583 | struct net_device *dev = sp->dev; | |
2584 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
2585 | u64 val64, valt, valr; | |
2586 | ||
20346722 | 2587 | /* |
1da177e4 LT |
2588 | * Set proper endian settings and verify the same by reading |
2589 | * the PIF Feed-back register. | |
2590 | */ | |
2591 | ||
2592 | val64 = readq(&bar0->pif_rd_swapper_fb); | |
2593 | if (val64 != 0x0123456789ABCDEFULL) { | |
2594 | int i = 0; | |
2595 | u64 value[] = { 0xC30000C3C30000C3ULL, /* FE=1, SE=1 */ | |
2596 | 0x8100008181000081ULL, /* FE=1, SE=0 */ | |
2597 | 0x4200004242000042ULL, /* FE=0, SE=1 */ | |
2598 | 0}; /* FE=0, SE=0 */ | |
2599 | ||
2600 | while(i<4) { | |
2601 | writeq(value[i], &bar0->swapper_ctrl); | |
2602 | val64 = readq(&bar0->pif_rd_swapper_fb); | |
2603 | if (val64 == 0x0123456789ABCDEFULL) | |
2604 | break; | |
2605 | i++; | |
2606 | } | |
2607 | if (i == 4) { | |
2608 | DBG_PRINT(ERR_DBG, "%s: Endian settings are wrong, ", | |
2609 | dev->name); | |
2610 | DBG_PRINT(ERR_DBG, "feedback read %llx\n", | |
2611 | (unsigned long long) val64); | |
2612 | return FAILURE; | |
2613 | } | |
2614 | valr = value[i]; | |
2615 | } else { | |
2616 | valr = readq(&bar0->swapper_ctrl); | |
2617 | } | |
2618 | ||
2619 | valt = 0x0123456789ABCDEFULL; | |
2620 | writeq(valt, &bar0->xmsi_address); | |
2621 | val64 = readq(&bar0->xmsi_address); | |
2622 | ||
2623 | if(val64 != valt) { | |
2624 | int i = 0; | |
2625 | u64 value[] = { 0x00C3C30000C3C300ULL, /* FE=1, SE=1 */ | |
2626 | 0x0081810000818100ULL, /* FE=1, SE=0 */ | |
2627 | 0x0042420000424200ULL, /* FE=0, SE=1 */ | |
2628 | 0}; /* FE=0, SE=0 */ | |
2629 | ||
2630 | while(i<4) { | |
2631 | writeq((value[i] | valr), &bar0->swapper_ctrl); | |
2632 | writeq(valt, &bar0->xmsi_address); | |
2633 | val64 = readq(&bar0->xmsi_address); | |
2634 | if(val64 == valt) | |
2635 | break; | |
2636 | i++; | |
2637 | } | |
2638 | if(i == 4) { | |
20346722 | 2639 | unsigned long long x = val64; |
1da177e4 | 2640 | DBG_PRINT(ERR_DBG, "Write failed, Xmsi_addr "); |
20346722 | 2641 | DBG_PRINT(ERR_DBG, "reads:0x%llx\n", x); |
1da177e4 LT |
2642 | return FAILURE; |
2643 | } | |
2644 | } | |
2645 | val64 = readq(&bar0->swapper_ctrl); | |
2646 | val64 &= 0xFFFF000000000000ULL; | |
2647 | ||
2648 | #ifdef __BIG_ENDIAN | |
20346722 | 2649 | /* |
2650 | * The device by default set to a big endian format, so a | |
1da177e4 LT |
2651 | * big endian driver need not set anything. |
2652 | */ | |
2653 | val64 |= (SWAPPER_CTRL_TXP_FE | | |
2654 | SWAPPER_CTRL_TXP_SE | | |
2655 | SWAPPER_CTRL_TXD_R_FE | | |
2656 | SWAPPER_CTRL_TXD_W_FE | | |
2657 | SWAPPER_CTRL_TXF_R_FE | | |
2658 | SWAPPER_CTRL_RXD_R_FE | | |
2659 | SWAPPER_CTRL_RXD_W_FE | | |
2660 | SWAPPER_CTRL_RXF_W_FE | | |
2661 | SWAPPER_CTRL_XMSI_FE | | |
2662 | SWAPPER_CTRL_XMSI_SE | | |
2663 | SWAPPER_CTRL_STATS_FE | SWAPPER_CTRL_STATS_SE); | |
2664 | writeq(val64, &bar0->swapper_ctrl); | |
2665 | #else | |
20346722 | 2666 | /* |
1da177e4 | 2667 | * Initially we enable all bits to make it accessible by the |
20346722 | 2668 | * driver, then we selectively enable only those bits that |
1da177e4 LT |
2669 | * we want to set. |
2670 | */ | |
2671 | val64 |= (SWAPPER_CTRL_TXP_FE | | |
2672 | SWAPPER_CTRL_TXP_SE | | |
2673 | SWAPPER_CTRL_TXD_R_FE | | |
2674 | SWAPPER_CTRL_TXD_R_SE | | |
2675 | SWAPPER_CTRL_TXD_W_FE | | |
2676 | SWAPPER_CTRL_TXD_W_SE | | |
2677 | SWAPPER_CTRL_TXF_R_FE | | |
2678 | SWAPPER_CTRL_RXD_R_FE | | |
2679 | SWAPPER_CTRL_RXD_R_SE | | |
2680 | SWAPPER_CTRL_RXD_W_FE | | |
2681 | SWAPPER_CTRL_RXD_W_SE | | |
2682 | SWAPPER_CTRL_RXF_W_FE | | |
2683 | SWAPPER_CTRL_XMSI_FE | | |
2684 | SWAPPER_CTRL_XMSI_SE | | |
2685 | SWAPPER_CTRL_STATS_FE | SWAPPER_CTRL_STATS_SE); | |
2686 | writeq(val64, &bar0->swapper_ctrl); | |
2687 | #endif | |
2688 | val64 = readq(&bar0->swapper_ctrl); | |
2689 | ||
20346722 | 2690 | /* |
2691 | * Verifying if endian settings are accurate by reading a | |
1da177e4 LT |
2692 | * feedback register. |
2693 | */ | |
2694 | val64 = readq(&bar0->pif_rd_swapper_fb); | |
2695 | if (val64 != 0x0123456789ABCDEFULL) { | |
2696 | /* Endian settings are incorrect, calls for another dekko. */ | |
2697 | DBG_PRINT(ERR_DBG, "%s: Endian settings are wrong, ", | |
2698 | dev->name); | |
2699 | DBG_PRINT(ERR_DBG, "feedback read %llx\n", | |
2700 | (unsigned long long) val64); | |
2701 | return FAILURE; | |
2702 | } | |
2703 | ||
2704 | return SUCCESS; | |
2705 | } | |
2706 | ||
2707 | /* ********************************************************* * | |
2708 | * Functions defined below concern the OS part of the driver * | |
2709 | * ********************************************************* */ | |
2710 | ||
20346722 | 2711 | /** |
1da177e4 LT |
2712 | * s2io_open - open entry point of the driver |
2713 | * @dev : pointer to the device structure. | |
2714 | * Description: | |
2715 | * This function is the open entry point of the driver. It mainly calls a | |
2716 | * function to allocate Rx buffers and inserts them into the buffer | |
20346722 | 2717 | * descriptors and then enables the Rx part of the NIC. |
1da177e4 LT |
2718 | * Return value: |
2719 | * 0 on success and an appropriate (-)ve integer as defined in errno.h | |
2720 | * file on failure. | |
2721 | */ | |
2722 | ||
20346722 | 2723 | int s2io_open(struct net_device *dev) |
1da177e4 LT |
2724 | { |
2725 | nic_t *sp = dev->priv; | |
2726 | int err = 0; | |
2727 | ||
20346722 | 2728 | /* |
2729 | * Make sure you have link off by default every time | |
1da177e4 LT |
2730 | * Nic is initialized |
2731 | */ | |
2732 | netif_carrier_off(dev); | |
7ba013ac | 2733 | sp->last_link_state = 0; /* Unkown link state */ |
1da177e4 LT |
2734 | |
2735 | /* Initialize H/W and enable interrupts */ | |
2736 | if (s2io_card_up(sp)) { | |
2737 | DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n", | |
2738 | dev->name); | |
20346722 | 2739 | err = -ENODEV; |
2740 | goto hw_init_failed; | |
1da177e4 LT |
2741 | } |
2742 | ||
2743 | /* After proper initialization of H/W, register ISR */ | |
20346722 | 2744 | err = request_irq((int) sp->pdev->irq, s2io_isr, SA_SHIRQ, |
1da177e4 LT |
2745 | sp->name, dev); |
2746 | if (err) { | |
1da177e4 LT |
2747 | DBG_PRINT(ERR_DBG, "%s: ISR registration failed\n", |
2748 | dev->name); | |
20346722 | 2749 | goto isr_registration_failed; |
1da177e4 LT |
2750 | } |
2751 | ||
2752 | if (s2io_set_mac_addr(dev, dev->dev_addr) == FAILURE) { | |
2753 | DBG_PRINT(ERR_DBG, "Set Mac Address Failed\n"); | |
20346722 | 2754 | err = -ENODEV; |
2755 | goto setting_mac_address_failed; | |
1da177e4 LT |
2756 | } |
2757 | ||
2758 | netif_start_queue(dev); | |
2759 | return 0; | |
20346722 | 2760 | |
2761 | setting_mac_address_failed: | |
2762 | free_irq(sp->pdev->irq, dev); | |
2763 | isr_registration_failed: | |
2764 | s2io_reset(sp); | |
2765 | hw_init_failed: | |
2766 | return err; | |
1da177e4 LT |
2767 | } |
2768 | ||
2769 | /** | |
2770 | * s2io_close -close entry point of the driver | |
2771 | * @dev : device pointer. | |
2772 | * Description: | |
2773 | * This is the stop entry point of the driver. It needs to undo exactly | |
2774 | * whatever was done by the open entry point,thus it's usually referred to | |
2775 | * as the close function.Among other things this function mainly stops the | |
2776 | * Rx side of the NIC and frees all the Rx buffers in the Rx rings. | |
2777 | * Return value: | |
2778 | * 0 on success and an appropriate (-)ve integer as defined in errno.h | |
2779 | * file on failure. | |
2780 | */ | |
2781 | ||
20346722 | 2782 | int s2io_close(struct net_device *dev) |
1da177e4 LT |
2783 | { |
2784 | nic_t *sp = dev->priv; | |
1da177e4 LT |
2785 | flush_scheduled_work(); |
2786 | netif_stop_queue(dev); | |
2787 | /* Reset card, kill tasklet and free Tx and Rx buffers. */ | |
2788 | s2io_card_down(sp); | |
2789 | ||
20346722 | 2790 | free_irq(sp->pdev->irq, dev); |
1da177e4 LT |
2791 | sp->device_close_flag = TRUE; /* Device is shut down. */ |
2792 | return 0; | |
2793 | } | |
2794 | ||
2795 | /** | |
2796 | * s2io_xmit - Tx entry point of te driver | |
2797 | * @skb : the socket buffer containing the Tx data. | |
2798 | * @dev : device pointer. | |
2799 | * Description : | |
2800 | * This function is the Tx entry point of the driver. S2IO NIC supports | |
2801 | * certain protocol assist features on Tx side, namely CSO, S/G, LSO. | |
2802 | * NOTE: when device cant queue the pkt,just the trans_start variable will | |
2803 | * not be upadted. | |
2804 | * Return value: | |
2805 | * 0 on success & 1 on failure. | |
2806 | */ | |
2807 | ||
20346722 | 2808 | int s2io_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 LT |
2809 | { |
2810 | nic_t *sp = dev->priv; | |
2811 | u16 frg_cnt, frg_len, i, queue, queue_len, put_off, get_off; | |
2812 | register u64 val64; | |
2813 | TxD_t *txdp; | |
2814 | TxFIFO_element_t __iomem *tx_fifo; | |
2815 | unsigned long flags; | |
2816 | #ifdef NETIF_F_TSO | |
2817 | int mss; | |
2818 | #endif | |
2819 | mac_info_t *mac_control; | |
2820 | struct config_param *config; | |
2821 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
2822 | ||
2823 | mac_control = &sp->mac_control; | |
2824 | config = &sp->config; | |
2825 | ||
20346722 | 2826 | DBG_PRINT(TX_DBG, "%s: In Neterion Tx routine\n", dev->name); |
1da177e4 | 2827 | spin_lock_irqsave(&sp->tx_lock, flags); |
1da177e4 | 2828 | if (atomic_read(&sp->card_state) == CARD_DOWN) { |
20346722 | 2829 | DBG_PRINT(TX_DBG, "%s: Card going down for reset\n", |
1da177e4 LT |
2830 | dev->name); |
2831 | spin_unlock_irqrestore(&sp->tx_lock, flags); | |
20346722 | 2832 | dev_kfree_skb(skb); |
2833 | return 0; | |
1da177e4 LT |
2834 | } |
2835 | ||
2836 | queue = 0; | |
1da177e4 | 2837 | |
20346722 | 2838 | put_off = (u16) mac_control->fifos[queue].tx_curr_put_info.offset; |
2839 | get_off = (u16) mac_control->fifos[queue].tx_curr_get_info.offset; | |
2840 | txdp = (TxD_t *) mac_control->fifos[queue].list_info[put_off]. | |
2841 | list_virt_addr; | |
2842 | ||
2843 | queue_len = mac_control->fifos[queue].tx_curr_put_info.fifo_len + 1; | |
1da177e4 LT |
2844 | /* Avoid "put" pointer going beyond "get" pointer */ |
2845 | if (txdp->Host_Control || (((put_off + 1) % queue_len) == get_off)) { | |
2846 | DBG_PRINT(ERR_DBG, "Error in xmit, No free TXDs.\n"); | |
2847 | netif_stop_queue(dev); | |
2848 | dev_kfree_skb(skb); | |
2849 | spin_unlock_irqrestore(&sp->tx_lock, flags); | |
2850 | return 0; | |
2851 | } | |
2852 | #ifdef NETIF_F_TSO | |
2853 | mss = skb_shinfo(skb)->tso_size; | |
2854 | if (mss) { | |
2855 | txdp->Control_1 |= TXD_TCP_LSO_EN; | |
2856 | txdp->Control_1 |= TXD_TCP_LSO_MSS(mss); | |
2857 | } | |
2858 | #endif | |
2859 | ||
2860 | frg_cnt = skb_shinfo(skb)->nr_frags; | |
2861 | frg_len = skb->len - skb->data_len; | |
2862 | ||
1da177e4 LT |
2863 | txdp->Buffer_Pointer = pci_map_single |
2864 | (sp->pdev, skb->data, frg_len, PCI_DMA_TODEVICE); | |
20346722 | 2865 | txdp->Host_Control = (unsigned long) skb; |
1da177e4 LT |
2866 | if (skb->ip_summed == CHECKSUM_HW) { |
2867 | txdp->Control_2 |= | |
2868 | (TXD_TX_CKO_IPV4_EN | TXD_TX_CKO_TCP_EN | | |
2869 | TXD_TX_CKO_UDP_EN); | |
2870 | } | |
2871 | ||
2872 | txdp->Control_2 |= config->tx_intr_type; | |
2873 | ||
2874 | txdp->Control_1 |= (TXD_BUFFER0_SIZE(frg_len) | | |
2875 | TXD_GATHER_CODE_FIRST); | |
2876 | txdp->Control_1 |= TXD_LIST_OWN_XENA; | |
2877 | ||
2878 | /* For fragmented SKB. */ | |
2879 | for (i = 0; i < frg_cnt; i++) { | |
2880 | skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; | |
2881 | txdp++; | |
2882 | txdp->Buffer_Pointer = (u64) pci_map_page | |
2883 | (sp->pdev, frag->page, frag->page_offset, | |
2884 | frag->size, PCI_DMA_TODEVICE); | |
2885 | txdp->Control_1 |= TXD_BUFFER0_SIZE(frag->size); | |
2886 | } | |
2887 | txdp->Control_1 |= TXD_GATHER_CODE_LAST; | |
2888 | ||
2889 | tx_fifo = mac_control->tx_FIFO_start[queue]; | |
20346722 | 2890 | val64 = mac_control->fifos[queue].list_info[put_off].list_phy_addr; |
1da177e4 LT |
2891 | writeq(val64, &tx_fifo->TxDL_Pointer); |
2892 | ||
2893 | val64 = (TX_FIFO_LAST_TXD_NUM(frg_cnt) | TX_FIFO_FIRST_LIST | | |
2894 | TX_FIFO_LAST_LIST); | |
20346722 | 2895 | |
1da177e4 LT |
2896 | #ifdef NETIF_F_TSO |
2897 | if (mss) | |
2898 | val64 |= TX_FIFO_SPECIAL_FUNC; | |
2899 | #endif | |
2900 | writeq(val64, &tx_fifo->List_Control); | |
2901 | ||
2902 | /* Perform a PCI read to flush previous writes */ | |
2903 | val64 = readq(&bar0->general_int_status); | |
2904 | ||
2905 | put_off++; | |
20346722 | 2906 | put_off %= mac_control->fifos[queue].tx_curr_put_info.fifo_len + 1; |
2907 | mac_control->fifos[queue].tx_curr_put_info.offset = put_off; | |
1da177e4 LT |
2908 | |
2909 | /* Avoid "put" pointer going beyond "get" pointer */ | |
2910 | if (((put_off + 1) % queue_len) == get_off) { | |
2911 | DBG_PRINT(TX_DBG, | |
2912 | "No free TxDs for xmit, Put: 0x%x Get:0x%x\n", | |
2913 | put_off, get_off); | |
2914 | netif_stop_queue(dev); | |
2915 | } | |
2916 | ||
2917 | dev->trans_start = jiffies; | |
2918 | spin_unlock_irqrestore(&sp->tx_lock, flags); | |
2919 | ||
2920 | return 0; | |
2921 | } | |
2922 | ||
2923 | /** | |
2924 | * s2io_isr - ISR handler of the device . | |
2925 | * @irq: the irq of the device. | |
2926 | * @dev_id: a void pointer to the dev structure of the NIC. | |
2927 | * @pt_regs: pointer to the registers pushed on the stack. | |
20346722 | 2928 | * Description: This function is the ISR handler of the device. It |
2929 | * identifies the reason for the interrupt and calls the relevant | |
2930 | * service routines. As a contongency measure, this ISR allocates the | |
1da177e4 LT |
2931 | * recv buffers, if their numbers are below the panic value which is |
2932 | * presently set to 25% of the original number of rcv buffers allocated. | |
2933 | * Return value: | |
20346722 | 2934 | * IRQ_HANDLED: will be returned if IRQ was handled by this routine |
1da177e4 LT |
2935 | * IRQ_NONE: will be returned if interrupt is not from our device |
2936 | */ | |
2937 | static irqreturn_t s2io_isr(int irq, void *dev_id, struct pt_regs *regs) | |
2938 | { | |
2939 | struct net_device *dev = (struct net_device *) dev_id; | |
2940 | nic_t *sp = dev->priv; | |
2941 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
20346722 | 2942 | int i; |
1da177e4 LT |
2943 | u64 reason = 0; |
2944 | mac_info_t *mac_control; | |
2945 | struct config_param *config; | |
2946 | ||
7ba013ac | 2947 | atomic_inc(&sp->isr_cnt); |
1da177e4 LT |
2948 | mac_control = &sp->mac_control; |
2949 | config = &sp->config; | |
2950 | ||
20346722 | 2951 | /* |
1da177e4 LT |
2952 | * Identify the cause for interrupt and call the appropriate |
2953 | * interrupt handler. Causes for the interrupt could be; | |
2954 | * 1. Rx of packet. | |
2955 | * 2. Tx complete. | |
2956 | * 3. Link down. | |
20346722 | 2957 | * 4. Error in any functional blocks of the NIC. |
1da177e4 LT |
2958 | */ |
2959 | reason = readq(&bar0->general_int_status); | |
2960 | ||
2961 | if (!reason) { | |
2962 | /* The interrupt was not raised by Xena. */ | |
7ba013ac | 2963 | atomic_dec(&sp->isr_cnt); |
1da177e4 LT |
2964 | return IRQ_NONE; |
2965 | } | |
2966 | ||
1da177e4 LT |
2967 | if (reason & (GEN_ERROR_INTR)) |
2968 | alarm_intr_handler(sp); | |
2969 | ||
2970 | #ifdef CONFIG_S2IO_NAPI | |
2971 | if (reason & GEN_INTR_RXTRAFFIC) { | |
2972 | if (netif_rx_schedule_prep(dev)) { | |
2973 | en_dis_able_nic_intrs(sp, RX_TRAFFIC_INTR, | |
2974 | DISABLE_INTRS); | |
2975 | __netif_rx_schedule(dev); | |
2976 | } | |
2977 | } | |
2978 | #else | |
2979 | /* If Intr is because of Rx Traffic */ | |
2980 | if (reason & GEN_INTR_RXTRAFFIC) { | |
20346722 | 2981 | for (i = 0; i < config->rx_ring_num; i++) { |
2982 | rx_intr_handler(&mac_control->rings[i]); | |
2983 | } | |
1da177e4 LT |
2984 | } |
2985 | #endif | |
2986 | ||
20346722 | 2987 | /* If Intr is because of Tx Traffic */ |
2988 | if (reason & GEN_INTR_TXTRAFFIC) { | |
2989 | for (i = 0; i < config->tx_fifo_num; i++) | |
2990 | tx_intr_handler(&mac_control->fifos[i]); | |
2991 | } | |
2992 | ||
2993 | /* | |
2994 | * If the Rx buffer count is below the panic threshold then | |
2995 | * reallocate the buffers from the interrupt handler itself, | |
1da177e4 LT |
2996 | * else schedule a tasklet to reallocate the buffers. |
2997 | */ | |
2998 | #ifndef CONFIG_S2IO_NAPI | |
2999 | for (i = 0; i < config->rx_ring_num; i++) { | |
20346722 | 3000 | int ret; |
1da177e4 LT |
3001 | int rxb_size = atomic_read(&sp->rx_bufs_left[i]); |
3002 | int level = rx_buffer_level(sp, rxb_size, i); | |
3003 | ||
3004 | if ((level == PANIC) && (!TASKLET_IN_USE)) { | |
3005 | DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", dev->name); | |
3006 | DBG_PRINT(INTR_DBG, "PANIC levels\n"); | |
3007 | if ((ret = fill_rx_buffers(sp, i)) == -ENOMEM) { | |
3008 | DBG_PRINT(ERR_DBG, "%s:Out of memory", | |
3009 | dev->name); | |
3010 | DBG_PRINT(ERR_DBG, " in ISR!!\n"); | |
3011 | clear_bit(0, (&sp->tasklet_status)); | |
7ba013ac | 3012 | atomic_dec(&sp->isr_cnt); |
1da177e4 LT |
3013 | return IRQ_HANDLED; |
3014 | } | |
3015 | clear_bit(0, (&sp->tasklet_status)); | |
3016 | } else if (level == LOW) { | |
3017 | tasklet_schedule(&sp->task); | |
3018 | } | |
3019 | } | |
3020 | #endif | |
3021 | ||
7ba013ac | 3022 | atomic_dec(&sp->isr_cnt); |
1da177e4 LT |
3023 | return IRQ_HANDLED; |
3024 | } | |
3025 | ||
7ba013ac | 3026 | /** |
3027 | * s2io_updt_stats - | |
3028 | */ | |
3029 | static void s2io_updt_stats(nic_t *sp) | |
3030 | { | |
3031 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3032 | u64 val64; | |
3033 | int cnt = 0; | |
3034 | ||
3035 | if (atomic_read(&sp->card_state) == CARD_UP) { | |
3036 | /* Apprx 30us on a 133 MHz bus */ | |
3037 | val64 = SET_UPDT_CLICKS(10) | | |
3038 | STAT_CFG_ONE_SHOT_EN | STAT_CFG_STAT_EN; | |
3039 | writeq(val64, &bar0->stat_cfg); | |
3040 | do { | |
3041 | udelay(100); | |
3042 | val64 = readq(&bar0->stat_cfg); | |
3043 | if (!(val64 & BIT(0))) | |
3044 | break; | |
3045 | cnt++; | |
3046 | if (cnt == 5) | |
3047 | break; /* Updt failed */ | |
3048 | } while(1); | |
3049 | } | |
3050 | } | |
3051 | ||
1da177e4 | 3052 | /** |
20346722 | 3053 | * s2io_get_stats - Updates the device statistics structure. |
1da177e4 LT |
3054 | * @dev : pointer to the device structure. |
3055 | * Description: | |
20346722 | 3056 | * This function updates the device statistics structure in the s2io_nic |
1da177e4 LT |
3057 | * structure and returns a pointer to the same. |
3058 | * Return value: | |
3059 | * pointer to the updated net_device_stats structure. | |
3060 | */ | |
3061 | ||
20346722 | 3062 | struct net_device_stats *s2io_get_stats(struct net_device *dev) |
1da177e4 LT |
3063 | { |
3064 | nic_t *sp = dev->priv; | |
3065 | mac_info_t *mac_control; | |
3066 | struct config_param *config; | |
3067 | ||
20346722 | 3068 | |
1da177e4 LT |
3069 | mac_control = &sp->mac_control; |
3070 | config = &sp->config; | |
3071 | ||
7ba013ac | 3072 | /* Configure Stats for immediate updt */ |
3073 | s2io_updt_stats(sp); | |
3074 | ||
3075 | sp->stats.tx_packets = | |
3076 | le32_to_cpu(mac_control->stats_info->tmac_frms); | |
20346722 | 3077 | sp->stats.tx_errors = |
3078 | le32_to_cpu(mac_control->stats_info->tmac_any_err_frms); | |
3079 | sp->stats.rx_errors = | |
3080 | le32_to_cpu(mac_control->stats_info->rmac_drop_frms); | |
3081 | sp->stats.multicast = | |
3082 | le32_to_cpu(mac_control->stats_info->rmac_vld_mcst_frms); | |
1da177e4 | 3083 | sp->stats.rx_length_errors = |
20346722 | 3084 | le32_to_cpu(mac_control->stats_info->rmac_long_frms); |
1da177e4 LT |
3085 | |
3086 | return (&sp->stats); | |
3087 | } | |
3088 | ||
3089 | /** | |
3090 | * s2io_set_multicast - entry point for multicast address enable/disable. | |
3091 | * @dev : pointer to the device structure | |
3092 | * Description: | |
20346722 | 3093 | * This function is a driver entry point which gets called by the kernel |
3094 | * whenever multicast addresses must be enabled/disabled. This also gets | |
1da177e4 LT |
3095 | * called to set/reset promiscuous mode. Depending on the deivce flag, we |
3096 | * determine, if multicast address must be enabled or if promiscuous mode | |
3097 | * is to be disabled etc. | |
3098 | * Return value: | |
3099 | * void. | |
3100 | */ | |
3101 | ||
3102 | static void s2io_set_multicast(struct net_device *dev) | |
3103 | { | |
3104 | int i, j, prev_cnt; | |
3105 | struct dev_mc_list *mclist; | |
3106 | nic_t *sp = dev->priv; | |
3107 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3108 | u64 val64 = 0, multi_mac = 0x010203040506ULL, mask = | |
3109 | 0xfeffffffffffULL; | |
3110 | u64 dis_addr = 0xffffffffffffULL, mac_addr = 0; | |
3111 | void __iomem *add; | |
3112 | ||
3113 | if ((dev->flags & IFF_ALLMULTI) && (!sp->m_cast_flg)) { | |
3114 | /* Enable all Multicast addresses */ | |
3115 | writeq(RMAC_ADDR_DATA0_MEM_ADDR(multi_mac), | |
3116 | &bar0->rmac_addr_data0_mem); | |
3117 | writeq(RMAC_ADDR_DATA1_MEM_MASK(mask), | |
3118 | &bar0->rmac_addr_data1_mem); | |
3119 | val64 = RMAC_ADDR_CMD_MEM_WE | | |
3120 | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD | | |
3121 | RMAC_ADDR_CMD_MEM_OFFSET(MAC_MC_ALL_MC_ADDR_OFFSET); | |
3122 | writeq(val64, &bar0->rmac_addr_cmd_mem); | |
3123 | /* Wait till command completes */ | |
3124 | wait_for_cmd_complete(sp); | |
3125 | ||
3126 | sp->m_cast_flg = 1; | |
3127 | sp->all_multi_pos = MAC_MC_ALL_MC_ADDR_OFFSET; | |
3128 | } else if ((dev->flags & IFF_ALLMULTI) && (sp->m_cast_flg)) { | |
3129 | /* Disable all Multicast addresses */ | |
3130 | writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr), | |
3131 | &bar0->rmac_addr_data0_mem); | |
5e25b9dd | 3132 | writeq(RMAC_ADDR_DATA1_MEM_MASK(0x0), |
3133 | &bar0->rmac_addr_data1_mem); | |
1da177e4 LT |
3134 | val64 = RMAC_ADDR_CMD_MEM_WE | |
3135 | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD | | |
3136 | RMAC_ADDR_CMD_MEM_OFFSET(sp->all_multi_pos); | |
3137 | writeq(val64, &bar0->rmac_addr_cmd_mem); | |
3138 | /* Wait till command completes */ | |
3139 | wait_for_cmd_complete(sp); | |
3140 | ||
3141 | sp->m_cast_flg = 0; | |
3142 | sp->all_multi_pos = 0; | |
3143 | } | |
3144 | ||
3145 | if ((dev->flags & IFF_PROMISC) && (!sp->promisc_flg)) { | |
3146 | /* Put the NIC into promiscuous mode */ | |
3147 | add = &bar0->mac_cfg; | |
3148 | val64 = readq(&bar0->mac_cfg); | |
3149 | val64 |= MAC_CFG_RMAC_PROM_ENABLE; | |
3150 | ||
3151 | writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key); | |
3152 | writel((u32) val64, add); | |
3153 | writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key); | |
3154 | writel((u32) (val64 >> 32), (add + 4)); | |
3155 | ||
3156 | val64 = readq(&bar0->mac_cfg); | |
3157 | sp->promisc_flg = 1; | |
3158 | DBG_PRINT(ERR_DBG, "%s: entered promiscuous mode\n", | |
3159 | dev->name); | |
3160 | } else if (!(dev->flags & IFF_PROMISC) && (sp->promisc_flg)) { | |
3161 | /* Remove the NIC from promiscuous mode */ | |
3162 | add = &bar0->mac_cfg; | |
3163 | val64 = readq(&bar0->mac_cfg); | |
3164 | val64 &= ~MAC_CFG_RMAC_PROM_ENABLE; | |
3165 | ||
3166 | writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key); | |
3167 | writel((u32) val64, add); | |
3168 | writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key); | |
3169 | writel((u32) (val64 >> 32), (add + 4)); | |
3170 | ||
3171 | val64 = readq(&bar0->mac_cfg); | |
3172 | sp->promisc_flg = 0; | |
3173 | DBG_PRINT(ERR_DBG, "%s: left promiscuous mode\n", | |
3174 | dev->name); | |
3175 | } | |
3176 | ||
3177 | /* Update individual M_CAST address list */ | |
3178 | if ((!sp->m_cast_flg) && dev->mc_count) { | |
3179 | if (dev->mc_count > | |
3180 | (MAX_ADDRS_SUPPORTED - MAC_MC_ADDR_START_OFFSET - 1)) { | |
3181 | DBG_PRINT(ERR_DBG, "%s: No more Rx filters ", | |
3182 | dev->name); | |
3183 | DBG_PRINT(ERR_DBG, "can be added, please enable "); | |
3184 | DBG_PRINT(ERR_DBG, "ALL_MULTI instead\n"); | |
3185 | return; | |
3186 | } | |
3187 | ||
3188 | prev_cnt = sp->mc_addr_count; | |
3189 | sp->mc_addr_count = dev->mc_count; | |
3190 | ||
3191 | /* Clear out the previous list of Mc in the H/W. */ | |
3192 | for (i = 0; i < prev_cnt; i++) { | |
3193 | writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr), | |
3194 | &bar0->rmac_addr_data0_mem); | |
3195 | writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL), | |
20346722 | 3196 | &bar0->rmac_addr_data1_mem); |
1da177e4 LT |
3197 | val64 = RMAC_ADDR_CMD_MEM_WE | |
3198 | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD | | |
3199 | RMAC_ADDR_CMD_MEM_OFFSET | |
3200 | (MAC_MC_ADDR_START_OFFSET + i); | |
3201 | writeq(val64, &bar0->rmac_addr_cmd_mem); | |
3202 | ||
3203 | /* Wait for command completes */ | |
3204 | if (wait_for_cmd_complete(sp)) { | |
3205 | DBG_PRINT(ERR_DBG, "%s: Adding ", | |
3206 | dev->name); | |
3207 | DBG_PRINT(ERR_DBG, "Multicasts failed\n"); | |
3208 | return; | |
3209 | } | |
3210 | } | |
3211 | ||
3212 | /* Create the new Rx filter list and update the same in H/W. */ | |
3213 | for (i = 0, mclist = dev->mc_list; i < dev->mc_count; | |
3214 | i++, mclist = mclist->next) { | |
3215 | memcpy(sp->usr_addrs[i].addr, mclist->dmi_addr, | |
3216 | ETH_ALEN); | |
3217 | for (j = 0; j < ETH_ALEN; j++) { | |
3218 | mac_addr |= mclist->dmi_addr[j]; | |
3219 | mac_addr <<= 8; | |
3220 | } | |
3221 | mac_addr >>= 8; | |
3222 | writeq(RMAC_ADDR_DATA0_MEM_ADDR(mac_addr), | |
3223 | &bar0->rmac_addr_data0_mem); | |
3224 | writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL), | |
20346722 | 3225 | &bar0->rmac_addr_data1_mem); |
1da177e4 LT |
3226 | val64 = RMAC_ADDR_CMD_MEM_WE | |
3227 | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD | | |
3228 | RMAC_ADDR_CMD_MEM_OFFSET | |
3229 | (i + MAC_MC_ADDR_START_OFFSET); | |
3230 | writeq(val64, &bar0->rmac_addr_cmd_mem); | |
3231 | ||
3232 | /* Wait for command completes */ | |
3233 | if (wait_for_cmd_complete(sp)) { | |
3234 | DBG_PRINT(ERR_DBG, "%s: Adding ", | |
3235 | dev->name); | |
3236 | DBG_PRINT(ERR_DBG, "Multicasts failed\n"); | |
3237 | return; | |
3238 | } | |
3239 | } | |
3240 | } | |
3241 | } | |
3242 | ||
3243 | /** | |
20346722 | 3244 | * s2io_set_mac_addr - Programs the Xframe mac address |
1da177e4 LT |
3245 | * @dev : pointer to the device structure. |
3246 | * @addr: a uchar pointer to the new mac address which is to be set. | |
20346722 | 3247 | * Description : This procedure will program the Xframe to receive |
1da177e4 | 3248 | * frames with new Mac Address |
20346722 | 3249 | * Return value: SUCCESS on success and an appropriate (-)ve integer |
1da177e4 LT |
3250 | * as defined in errno.h file on failure. |
3251 | */ | |
3252 | ||
3253 | int s2io_set_mac_addr(struct net_device *dev, u8 * addr) | |
3254 | { | |
3255 | nic_t *sp = dev->priv; | |
3256 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3257 | register u64 val64, mac_addr = 0; | |
3258 | int i; | |
3259 | ||
20346722 | 3260 | /* |
1da177e4 LT |
3261 | * Set the new MAC address as the new unicast filter and reflect this |
3262 | * change on the device address registered with the OS. It will be | |
20346722 | 3263 | * at offset 0. |
1da177e4 LT |
3264 | */ |
3265 | for (i = 0; i < ETH_ALEN; i++) { | |
3266 | mac_addr <<= 8; | |
3267 | mac_addr |= addr[i]; | |
3268 | } | |
3269 | ||
3270 | writeq(RMAC_ADDR_DATA0_MEM_ADDR(mac_addr), | |
3271 | &bar0->rmac_addr_data0_mem); | |
3272 | ||
3273 | val64 = | |
3274 | RMAC_ADDR_CMD_MEM_WE | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD | | |
3275 | RMAC_ADDR_CMD_MEM_OFFSET(0); | |
3276 | writeq(val64, &bar0->rmac_addr_cmd_mem); | |
3277 | /* Wait till command completes */ | |
3278 | if (wait_for_cmd_complete(sp)) { | |
3279 | DBG_PRINT(ERR_DBG, "%s: set_mac_addr failed\n", dev->name); | |
3280 | return FAILURE; | |
3281 | } | |
3282 | ||
3283 | return SUCCESS; | |
3284 | } | |
3285 | ||
3286 | /** | |
20346722 | 3287 | * s2io_ethtool_sset - Sets different link parameters. |
1da177e4 LT |
3288 | * @sp : private member of the device structure, which is a pointer to the * s2io_nic structure. |
3289 | * @info: pointer to the structure with parameters given by ethtool to set | |
3290 | * link information. | |
3291 | * Description: | |
20346722 | 3292 | * The function sets different link parameters provided by the user onto |
1da177e4 LT |
3293 | * the NIC. |
3294 | * Return value: | |
3295 | * 0 on success. | |
3296 | */ | |
3297 | ||
3298 | static int s2io_ethtool_sset(struct net_device *dev, | |
3299 | struct ethtool_cmd *info) | |
3300 | { | |
3301 | nic_t *sp = dev->priv; | |
3302 | if ((info->autoneg == AUTONEG_ENABLE) || | |
3303 | (info->speed != SPEED_10000) || (info->duplex != DUPLEX_FULL)) | |
3304 | return -EINVAL; | |
3305 | else { | |
3306 | s2io_close(sp->dev); | |
3307 | s2io_open(sp->dev); | |
3308 | } | |
3309 | ||
3310 | return 0; | |
3311 | } | |
3312 | ||
3313 | /** | |
20346722 | 3314 | * s2io_ethtol_gset - Return link specific information. |
1da177e4 LT |
3315 | * @sp : private member of the device structure, pointer to the |
3316 | * s2io_nic structure. | |
3317 | * @info : pointer to the structure with parameters given by ethtool | |
3318 | * to return link information. | |
3319 | * Description: | |
3320 | * Returns link specific information like speed, duplex etc.. to ethtool. | |
3321 | * Return value : | |
3322 | * return 0 on success. | |
3323 | */ | |
3324 | ||
3325 | static int s2io_ethtool_gset(struct net_device *dev, struct ethtool_cmd *info) | |
3326 | { | |
3327 | nic_t *sp = dev->priv; | |
3328 | info->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE); | |
3329 | info->advertising = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE); | |
3330 | info->port = PORT_FIBRE; | |
3331 | /* info->transceiver?? TODO */ | |
3332 | ||
3333 | if (netif_carrier_ok(sp->dev)) { | |
3334 | info->speed = 10000; | |
3335 | info->duplex = DUPLEX_FULL; | |
3336 | } else { | |
3337 | info->speed = -1; | |
3338 | info->duplex = -1; | |
3339 | } | |
3340 | ||
3341 | info->autoneg = AUTONEG_DISABLE; | |
3342 | return 0; | |
3343 | } | |
3344 | ||
3345 | /** | |
20346722 | 3346 | * s2io_ethtool_gdrvinfo - Returns driver specific information. |
3347 | * @sp : private member of the device structure, which is a pointer to the | |
1da177e4 LT |
3348 | * s2io_nic structure. |
3349 | * @info : pointer to the structure with parameters given by ethtool to | |
3350 | * return driver information. | |
3351 | * Description: | |
3352 | * Returns driver specefic information like name, version etc.. to ethtool. | |
3353 | * Return value: | |
3354 | * void | |
3355 | */ | |
3356 | ||
3357 | static void s2io_ethtool_gdrvinfo(struct net_device *dev, | |
3358 | struct ethtool_drvinfo *info) | |
3359 | { | |
3360 | nic_t *sp = dev->priv; | |
3361 | ||
3362 | strncpy(info->driver, s2io_driver_name, sizeof(s2io_driver_name)); | |
3363 | strncpy(info->version, s2io_driver_version, | |
3364 | sizeof(s2io_driver_version)); | |
3365 | strncpy(info->fw_version, "", 32); | |
3366 | strncpy(info->bus_info, pci_name(sp->pdev), 32); | |
3367 | info->regdump_len = XENA_REG_SPACE; | |
3368 | info->eedump_len = XENA_EEPROM_SPACE; | |
3369 | info->testinfo_len = S2IO_TEST_LEN; | |
3370 | info->n_stats = S2IO_STAT_LEN; | |
3371 | } | |
3372 | ||
3373 | /** | |
3374 | * s2io_ethtool_gregs - dumps the entire space of Xfame into the buffer. | |
20346722 | 3375 | * @sp: private member of the device structure, which is a pointer to the |
1da177e4 | 3376 | * s2io_nic structure. |
20346722 | 3377 | * @regs : pointer to the structure with parameters given by ethtool for |
1da177e4 LT |
3378 | * dumping the registers. |
3379 | * @reg_space: The input argumnet into which all the registers are dumped. | |
3380 | * Description: | |
3381 | * Dumps the entire register space of xFrame NIC into the user given | |
3382 | * buffer area. | |
3383 | * Return value : | |
3384 | * void . | |
3385 | */ | |
3386 | ||
3387 | static void s2io_ethtool_gregs(struct net_device *dev, | |
3388 | struct ethtool_regs *regs, void *space) | |
3389 | { | |
3390 | int i; | |
3391 | u64 reg; | |
3392 | u8 *reg_space = (u8 *) space; | |
3393 | nic_t *sp = dev->priv; | |
3394 | ||
3395 | regs->len = XENA_REG_SPACE; | |
3396 | regs->version = sp->pdev->subsystem_device; | |
3397 | ||
3398 | for (i = 0; i < regs->len; i += 8) { | |
3399 | reg = readq(sp->bar0 + i); | |
3400 | memcpy((reg_space + i), ®, 8); | |
3401 | } | |
3402 | } | |
3403 | ||
3404 | /** | |
3405 | * s2io_phy_id - timer function that alternates adapter LED. | |
20346722 | 3406 | * @data : address of the private member of the device structure, which |
1da177e4 | 3407 | * is a pointer to the s2io_nic structure, provided as an u32. |
20346722 | 3408 | * Description: This is actually the timer function that alternates the |
3409 | * adapter LED bit of the adapter control bit to set/reset every time on | |
3410 | * invocation. The timer is set for 1/2 a second, hence tha NIC blinks | |
1da177e4 LT |
3411 | * once every second. |
3412 | */ | |
3413 | static void s2io_phy_id(unsigned long data) | |
3414 | { | |
3415 | nic_t *sp = (nic_t *) data; | |
3416 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3417 | u64 val64 = 0; | |
3418 | u16 subid; | |
3419 | ||
3420 | subid = sp->pdev->subsystem_device; | |
3421 | if ((subid & 0xFF) >= 0x07) { | |
3422 | val64 = readq(&bar0->gpio_control); | |
3423 | val64 ^= GPIO_CTRL_GPIO_0; | |
3424 | writeq(val64, &bar0->gpio_control); | |
3425 | } else { | |
3426 | val64 = readq(&bar0->adapter_control); | |
3427 | val64 ^= ADAPTER_LED_ON; | |
3428 | writeq(val64, &bar0->adapter_control); | |
3429 | } | |
3430 | ||
3431 | mod_timer(&sp->id_timer, jiffies + HZ / 2); | |
3432 | } | |
3433 | ||
3434 | /** | |
3435 | * s2io_ethtool_idnic - To physically identify the nic on the system. | |
3436 | * @sp : private member of the device structure, which is a pointer to the | |
3437 | * s2io_nic structure. | |
20346722 | 3438 | * @id : pointer to the structure with identification parameters given by |
1da177e4 LT |
3439 | * ethtool. |
3440 | * Description: Used to physically identify the NIC on the system. | |
20346722 | 3441 | * The Link LED will blink for a time specified by the user for |
1da177e4 | 3442 | * identification. |
20346722 | 3443 | * NOTE: The Link has to be Up to be able to blink the LED. Hence |
1da177e4 LT |
3444 | * identification is possible only if it's link is up. |
3445 | * Return value: | |
3446 | * int , returns 0 on success | |
3447 | */ | |
3448 | ||
3449 | static int s2io_ethtool_idnic(struct net_device *dev, u32 data) | |
3450 | { | |
3451 | u64 val64 = 0, last_gpio_ctrl_val; | |
3452 | nic_t *sp = dev->priv; | |
3453 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3454 | u16 subid; | |
3455 | ||
3456 | subid = sp->pdev->subsystem_device; | |
3457 | last_gpio_ctrl_val = readq(&bar0->gpio_control); | |
3458 | if ((subid & 0xFF) < 0x07) { | |
3459 | val64 = readq(&bar0->adapter_control); | |
3460 | if (!(val64 & ADAPTER_CNTL_EN)) { | |
3461 | printk(KERN_ERR | |
3462 | "Adapter Link down, cannot blink LED\n"); | |
3463 | return -EFAULT; | |
3464 | } | |
3465 | } | |
3466 | if (sp->id_timer.function == NULL) { | |
3467 | init_timer(&sp->id_timer); | |
3468 | sp->id_timer.function = s2io_phy_id; | |
3469 | sp->id_timer.data = (unsigned long) sp; | |
3470 | } | |
3471 | mod_timer(&sp->id_timer, jiffies); | |
3472 | if (data) | |
20346722 | 3473 | msleep_interruptible(data * HZ); |
1da177e4 | 3474 | else |
20346722 | 3475 | msleep_interruptible(MAX_FLICKER_TIME); |
1da177e4 LT |
3476 | del_timer_sync(&sp->id_timer); |
3477 | ||
3478 | if (CARDS_WITH_FAULTY_LINK_INDICATORS(subid)) { | |
3479 | writeq(last_gpio_ctrl_val, &bar0->gpio_control); | |
3480 | last_gpio_ctrl_val = readq(&bar0->gpio_control); | |
3481 | } | |
3482 | ||
3483 | return 0; | |
3484 | } | |
3485 | ||
3486 | /** | |
3487 | * s2io_ethtool_getpause_data -Pause frame frame generation and reception. | |
20346722 | 3488 | * @sp : private member of the device structure, which is a pointer to the |
3489 | * s2io_nic structure. | |
1da177e4 LT |
3490 | * @ep : pointer to the structure with pause parameters given by ethtool. |
3491 | * Description: | |
3492 | * Returns the Pause frame generation and reception capability of the NIC. | |
3493 | * Return value: | |
3494 | * void | |
3495 | */ | |
3496 | static void s2io_ethtool_getpause_data(struct net_device *dev, | |
3497 | struct ethtool_pauseparam *ep) | |
3498 | { | |
3499 | u64 val64; | |
3500 | nic_t *sp = dev->priv; | |
3501 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3502 | ||
3503 | val64 = readq(&bar0->rmac_pause_cfg); | |
3504 | if (val64 & RMAC_PAUSE_GEN_ENABLE) | |
3505 | ep->tx_pause = TRUE; | |
3506 | if (val64 & RMAC_PAUSE_RX_ENABLE) | |
3507 | ep->rx_pause = TRUE; | |
3508 | ep->autoneg = FALSE; | |
3509 | } | |
3510 | ||
3511 | /** | |
3512 | * s2io_ethtool_setpause_data - set/reset pause frame generation. | |
20346722 | 3513 | * @sp : private member of the device structure, which is a pointer to the |
1da177e4 LT |
3514 | * s2io_nic structure. |
3515 | * @ep : pointer to the structure with pause parameters given by ethtool. | |
3516 | * Description: | |
3517 | * It can be used to set or reset Pause frame generation or reception | |
3518 | * support of the NIC. | |
3519 | * Return value: | |
3520 | * int, returns 0 on Success | |
3521 | */ | |
3522 | ||
3523 | static int s2io_ethtool_setpause_data(struct net_device *dev, | |
20346722 | 3524 | struct ethtool_pauseparam *ep) |
1da177e4 LT |
3525 | { |
3526 | u64 val64; | |
3527 | nic_t *sp = dev->priv; | |
3528 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3529 | ||
3530 | val64 = readq(&bar0->rmac_pause_cfg); | |
3531 | if (ep->tx_pause) | |
3532 | val64 |= RMAC_PAUSE_GEN_ENABLE; | |
3533 | else | |
3534 | val64 &= ~RMAC_PAUSE_GEN_ENABLE; | |
3535 | if (ep->rx_pause) | |
3536 | val64 |= RMAC_PAUSE_RX_ENABLE; | |
3537 | else | |
3538 | val64 &= ~RMAC_PAUSE_RX_ENABLE; | |
3539 | writeq(val64, &bar0->rmac_pause_cfg); | |
3540 | return 0; | |
3541 | } | |
3542 | ||
3543 | /** | |
3544 | * read_eeprom - reads 4 bytes of data from user given offset. | |
20346722 | 3545 | * @sp : private member of the device structure, which is a pointer to the |
1da177e4 LT |
3546 | * s2io_nic structure. |
3547 | * @off : offset at which the data must be written | |
3548 | * @data : Its an output parameter where the data read at the given | |
20346722 | 3549 | * offset is stored. |
1da177e4 | 3550 | * Description: |
20346722 | 3551 | * Will read 4 bytes of data from the user given offset and return the |
1da177e4 LT |
3552 | * read data. |
3553 | * NOTE: Will allow to read only part of the EEPROM visible through the | |
3554 | * I2C bus. | |
3555 | * Return value: | |
3556 | * -1 on failure and 0 on success. | |
3557 | */ | |
3558 | ||
3559 | #define S2IO_DEV_ID 5 | |
3560 | static int read_eeprom(nic_t * sp, int off, u32 * data) | |
3561 | { | |
3562 | int ret = -1; | |
3563 | u32 exit_cnt = 0; | |
3564 | u64 val64; | |
3565 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3566 | ||
3567 | val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) | I2C_CONTROL_ADDR(off) | | |
3568 | I2C_CONTROL_BYTE_CNT(0x3) | I2C_CONTROL_READ | | |
3569 | I2C_CONTROL_CNTL_START; | |
3570 | SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF); | |
3571 | ||
3572 | while (exit_cnt < 5) { | |
3573 | val64 = readq(&bar0->i2c_control); | |
3574 | if (I2C_CONTROL_CNTL_END(val64)) { | |
3575 | *data = I2C_CONTROL_GET_DATA(val64); | |
3576 | ret = 0; | |
3577 | break; | |
3578 | } | |
3579 | msleep(50); | |
3580 | exit_cnt++; | |
3581 | } | |
3582 | ||
3583 | return ret; | |
3584 | } | |
3585 | ||
3586 | /** | |
3587 | * write_eeprom - actually writes the relevant part of the data value. | |
3588 | * @sp : private member of the device structure, which is a pointer to the | |
3589 | * s2io_nic structure. | |
3590 | * @off : offset at which the data must be written | |
3591 | * @data : The data that is to be written | |
20346722 | 3592 | * @cnt : Number of bytes of the data that are actually to be written into |
1da177e4 LT |
3593 | * the Eeprom. (max of 3) |
3594 | * Description: | |
3595 | * Actually writes the relevant part of the data value into the Eeprom | |
3596 | * through the I2C bus. | |
3597 | * Return value: | |
3598 | * 0 on success, -1 on failure. | |
3599 | */ | |
3600 | ||
3601 | static int write_eeprom(nic_t * sp, int off, u32 data, int cnt) | |
3602 | { | |
3603 | int exit_cnt = 0, ret = -1; | |
3604 | u64 val64; | |
3605 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3606 | ||
3607 | val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) | I2C_CONTROL_ADDR(off) | | |
3608 | I2C_CONTROL_BYTE_CNT(cnt) | I2C_CONTROL_SET_DATA(data) | | |
3609 | I2C_CONTROL_CNTL_START; | |
3610 | SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF); | |
3611 | ||
3612 | while (exit_cnt < 5) { | |
3613 | val64 = readq(&bar0->i2c_control); | |
3614 | if (I2C_CONTROL_CNTL_END(val64)) { | |
3615 | if (!(val64 & I2C_CONTROL_NACK)) | |
3616 | ret = 0; | |
3617 | break; | |
3618 | } | |
3619 | msleep(50); | |
3620 | exit_cnt++; | |
3621 | } | |
3622 | ||
3623 | return ret; | |
3624 | } | |
3625 | ||
3626 | /** | |
3627 | * s2io_ethtool_geeprom - reads the value stored in the Eeprom. | |
3628 | * @sp : private member of the device structure, which is a pointer to the * s2io_nic structure. | |
20346722 | 3629 | * @eeprom : pointer to the user level structure provided by ethtool, |
1da177e4 LT |
3630 | * containing all relevant information. |
3631 | * @data_buf : user defined value to be written into Eeprom. | |
3632 | * Description: Reads the values stored in the Eeprom at given offset | |
3633 | * for a given length. Stores these values int the input argument data | |
3634 | * buffer 'data_buf' and returns these to the caller (ethtool.) | |
3635 | * Return value: | |
3636 | * int 0 on success | |
3637 | */ | |
3638 | ||
3639 | static int s2io_ethtool_geeprom(struct net_device *dev, | |
20346722 | 3640 | struct ethtool_eeprom *eeprom, u8 * data_buf) |
1da177e4 LT |
3641 | { |
3642 | u32 data, i, valid; | |
3643 | nic_t *sp = dev->priv; | |
3644 | ||
3645 | eeprom->magic = sp->pdev->vendor | (sp->pdev->device << 16); | |
3646 | ||
3647 | if ((eeprom->offset + eeprom->len) > (XENA_EEPROM_SPACE)) | |
3648 | eeprom->len = XENA_EEPROM_SPACE - eeprom->offset; | |
3649 | ||
3650 | for (i = 0; i < eeprom->len; i += 4) { | |
3651 | if (read_eeprom(sp, (eeprom->offset + i), &data)) { | |
3652 | DBG_PRINT(ERR_DBG, "Read of EEPROM failed\n"); | |
3653 | return -EFAULT; | |
3654 | } | |
3655 | valid = INV(data); | |
3656 | memcpy((data_buf + i), &valid, 4); | |
3657 | } | |
3658 | return 0; | |
3659 | } | |
3660 | ||
3661 | /** | |
3662 | * s2io_ethtool_seeprom - tries to write the user provided value in Eeprom | |
3663 | * @sp : private member of the device structure, which is a pointer to the | |
3664 | * s2io_nic structure. | |
20346722 | 3665 | * @eeprom : pointer to the user level structure provided by ethtool, |
1da177e4 LT |
3666 | * containing all relevant information. |
3667 | * @data_buf ; user defined value to be written into Eeprom. | |
3668 | * Description: | |
3669 | * Tries to write the user provided value in the Eeprom, at the offset | |
3670 | * given by the user. | |
3671 | * Return value: | |
3672 | * 0 on success, -EFAULT on failure. | |
3673 | */ | |
3674 | ||
3675 | static int s2io_ethtool_seeprom(struct net_device *dev, | |
3676 | struct ethtool_eeprom *eeprom, | |
3677 | u8 * data_buf) | |
3678 | { | |
3679 | int len = eeprom->len, cnt = 0; | |
3680 | u32 valid = 0, data; | |
3681 | nic_t *sp = dev->priv; | |
3682 | ||
3683 | if (eeprom->magic != (sp->pdev->vendor | (sp->pdev->device << 16))) { | |
3684 | DBG_PRINT(ERR_DBG, | |
3685 | "ETHTOOL_WRITE_EEPROM Err: Magic value "); | |
3686 | DBG_PRINT(ERR_DBG, "is wrong, Its not 0x%x\n", | |
3687 | eeprom->magic); | |
3688 | return -EFAULT; | |
3689 | } | |
3690 | ||
3691 | while (len) { | |
3692 | data = (u32) data_buf[cnt] & 0x000000FF; | |
3693 | if (data) { | |
3694 | valid = (u32) (data << 24); | |
3695 | } else | |
3696 | valid = data; | |
3697 | ||
3698 | if (write_eeprom(sp, (eeprom->offset + cnt), valid, 0)) { | |
3699 | DBG_PRINT(ERR_DBG, | |
3700 | "ETHTOOL_WRITE_EEPROM Err: Cannot "); | |
3701 | DBG_PRINT(ERR_DBG, | |
3702 | "write into the specified offset\n"); | |
3703 | return -EFAULT; | |
3704 | } | |
3705 | cnt++; | |
3706 | len--; | |
3707 | } | |
3708 | ||
3709 | return 0; | |
3710 | } | |
3711 | ||
3712 | /** | |
20346722 | 3713 | * s2io_register_test - reads and writes into all clock domains. |
3714 | * @sp : private member of the device structure, which is a pointer to the | |
1da177e4 LT |
3715 | * s2io_nic structure. |
3716 | * @data : variable that returns the result of each of the test conducted b | |
3717 | * by the driver. | |
3718 | * Description: | |
3719 | * Read and write into all clock domains. The NIC has 3 clock domains, | |
3720 | * see that registers in all the three regions are accessible. | |
3721 | * Return value: | |
3722 | * 0 on success. | |
3723 | */ | |
3724 | ||
3725 | static int s2io_register_test(nic_t * sp, uint64_t * data) | |
3726 | { | |
3727 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3728 | u64 val64 = 0; | |
3729 | int fail = 0; | |
3730 | ||
20346722 | 3731 | val64 = readq(&bar0->pif_rd_swapper_fb); |
3732 | if (val64 != 0x123456789abcdefULL) { | |
1da177e4 LT |
3733 | fail = 1; |
3734 | DBG_PRINT(INFO_DBG, "Read Test level 1 fails\n"); | |
3735 | } | |
3736 | ||
3737 | val64 = readq(&bar0->rmac_pause_cfg); | |
3738 | if (val64 != 0xc000ffff00000000ULL) { | |
3739 | fail = 1; | |
3740 | DBG_PRINT(INFO_DBG, "Read Test level 2 fails\n"); | |
3741 | } | |
3742 | ||
3743 | val64 = readq(&bar0->rx_queue_cfg); | |
3744 | if (val64 != 0x0808080808080808ULL) { | |
3745 | fail = 1; | |
3746 | DBG_PRINT(INFO_DBG, "Read Test level 3 fails\n"); | |
3747 | } | |
3748 | ||
3749 | val64 = readq(&bar0->xgxs_efifo_cfg); | |
3750 | if (val64 != 0x000000001923141EULL) { | |
3751 | fail = 1; | |
3752 | DBG_PRINT(INFO_DBG, "Read Test level 4 fails\n"); | |
3753 | } | |
3754 | ||
3755 | val64 = 0x5A5A5A5A5A5A5A5AULL; | |
3756 | writeq(val64, &bar0->xmsi_data); | |
3757 | val64 = readq(&bar0->xmsi_data); | |
3758 | if (val64 != 0x5A5A5A5A5A5A5A5AULL) { | |
3759 | fail = 1; | |
3760 | DBG_PRINT(ERR_DBG, "Write Test level 1 fails\n"); | |
3761 | } | |
3762 | ||
3763 | val64 = 0xA5A5A5A5A5A5A5A5ULL; | |
3764 | writeq(val64, &bar0->xmsi_data); | |
3765 | val64 = readq(&bar0->xmsi_data); | |
3766 | if (val64 != 0xA5A5A5A5A5A5A5A5ULL) { | |
3767 | fail = 1; | |
3768 | DBG_PRINT(ERR_DBG, "Write Test level 2 fails\n"); | |
3769 | } | |
3770 | ||
3771 | *data = fail; | |
3772 | return 0; | |
3773 | } | |
3774 | ||
3775 | /** | |
20346722 | 3776 | * s2io_eeprom_test - to verify that EEprom in the xena can be programmed. |
1da177e4 LT |
3777 | * @sp : private member of the device structure, which is a pointer to the |
3778 | * s2io_nic structure. | |
3779 | * @data:variable that returns the result of each of the test conducted by | |
3780 | * the driver. | |
3781 | * Description: | |
20346722 | 3782 | * Verify that EEPROM in the xena can be programmed using I2C_CONTROL |
1da177e4 LT |
3783 | * register. |
3784 | * Return value: | |
3785 | * 0 on success. | |
3786 | */ | |
3787 | ||
3788 | static int s2io_eeprom_test(nic_t * sp, uint64_t * data) | |
3789 | { | |
3790 | int fail = 0; | |
3791 | u32 ret_data; | |
3792 | ||
3793 | /* Test Write Error at offset 0 */ | |
3794 | if (!write_eeprom(sp, 0, 0, 3)) | |
3795 | fail = 1; | |
3796 | ||
3797 | /* Test Write at offset 4f0 */ | |
3798 | if (write_eeprom(sp, 0x4F0, 0x01234567, 3)) | |
3799 | fail = 1; | |
3800 | if (read_eeprom(sp, 0x4F0, &ret_data)) | |
3801 | fail = 1; | |
3802 | ||
3803 | if (ret_data != 0x01234567) | |
3804 | fail = 1; | |
3805 | ||
3806 | /* Reset the EEPROM data go FFFF */ | |
3807 | write_eeprom(sp, 0x4F0, 0xFFFFFFFF, 3); | |
3808 | ||
3809 | /* Test Write Request Error at offset 0x7c */ | |
3810 | if (!write_eeprom(sp, 0x07C, 0, 3)) | |
3811 | fail = 1; | |
3812 | ||
3813 | /* Test Write Request at offset 0x7fc */ | |
3814 | if (write_eeprom(sp, 0x7FC, 0x01234567, 3)) | |
3815 | fail = 1; | |
3816 | if (read_eeprom(sp, 0x7FC, &ret_data)) | |
3817 | fail = 1; | |
3818 | ||
3819 | if (ret_data != 0x01234567) | |
3820 | fail = 1; | |
3821 | ||
3822 | /* Reset the EEPROM data go FFFF */ | |
3823 | write_eeprom(sp, 0x7FC, 0xFFFFFFFF, 3); | |
3824 | ||
3825 | /* Test Write Error at offset 0x80 */ | |
3826 | if (!write_eeprom(sp, 0x080, 0, 3)) | |
3827 | fail = 1; | |
3828 | ||
3829 | /* Test Write Error at offset 0xfc */ | |
3830 | if (!write_eeprom(sp, 0x0FC, 0, 3)) | |
3831 | fail = 1; | |
3832 | ||
3833 | /* Test Write Error at offset 0x100 */ | |
3834 | if (!write_eeprom(sp, 0x100, 0, 3)) | |
3835 | fail = 1; | |
3836 | ||
3837 | /* Test Write Error at offset 4ec */ | |
3838 | if (!write_eeprom(sp, 0x4EC, 0, 3)) | |
3839 | fail = 1; | |
3840 | ||
3841 | *data = fail; | |
3842 | return 0; | |
3843 | } | |
3844 | ||
3845 | /** | |
3846 | * s2io_bist_test - invokes the MemBist test of the card . | |
20346722 | 3847 | * @sp : private member of the device structure, which is a pointer to the |
1da177e4 | 3848 | * s2io_nic structure. |
20346722 | 3849 | * @data:variable that returns the result of each of the test conducted by |
1da177e4 LT |
3850 | * the driver. |
3851 | * Description: | |
3852 | * This invokes the MemBist test of the card. We give around | |
3853 | * 2 secs time for the Test to complete. If it's still not complete | |
20346722 | 3854 | * within this peiod, we consider that the test failed. |
1da177e4 LT |
3855 | * Return value: |
3856 | * 0 on success and -1 on failure. | |
3857 | */ | |
3858 | ||
3859 | static int s2io_bist_test(nic_t * sp, uint64_t * data) | |
3860 | { | |
3861 | u8 bist = 0; | |
3862 | int cnt = 0, ret = -1; | |
3863 | ||
3864 | pci_read_config_byte(sp->pdev, PCI_BIST, &bist); | |
3865 | bist |= PCI_BIST_START; | |
3866 | pci_write_config_word(sp->pdev, PCI_BIST, bist); | |
3867 | ||
3868 | while (cnt < 20) { | |
3869 | pci_read_config_byte(sp->pdev, PCI_BIST, &bist); | |
3870 | if (!(bist & PCI_BIST_START)) { | |
3871 | *data = (bist & PCI_BIST_CODE_MASK); | |
3872 | ret = 0; | |
3873 | break; | |
3874 | } | |
3875 | msleep(100); | |
3876 | cnt++; | |
3877 | } | |
3878 | ||
3879 | return ret; | |
3880 | } | |
3881 | ||
3882 | /** | |
20346722 | 3883 | * s2io-link_test - verifies the link state of the nic |
3884 | * @sp ; private member of the device structure, which is a pointer to the | |
1da177e4 LT |
3885 | * s2io_nic structure. |
3886 | * @data: variable that returns the result of each of the test conducted by | |
3887 | * the driver. | |
3888 | * Description: | |
20346722 | 3889 | * The function verifies the link state of the NIC and updates the input |
1da177e4 LT |
3890 | * argument 'data' appropriately. |
3891 | * Return value: | |
3892 | * 0 on success. | |
3893 | */ | |
3894 | ||
3895 | static int s2io_link_test(nic_t * sp, uint64_t * data) | |
3896 | { | |
3897 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3898 | u64 val64; | |
3899 | ||
3900 | val64 = readq(&bar0->adapter_status); | |
3901 | if (val64 & ADAPTER_STATUS_RMAC_LOCAL_FAULT) | |
3902 | *data = 1; | |
3903 | ||
3904 | return 0; | |
3905 | } | |
3906 | ||
3907 | /** | |
20346722 | 3908 | * s2io_rldram_test - offline test for access to the RldRam chip on the NIC |
3909 | * @sp - private member of the device structure, which is a pointer to the | |
1da177e4 | 3910 | * s2io_nic structure. |
20346722 | 3911 | * @data - variable that returns the result of each of the test |
1da177e4 LT |
3912 | * conducted by the driver. |
3913 | * Description: | |
20346722 | 3914 | * This is one of the offline test that tests the read and write |
1da177e4 LT |
3915 | * access to the RldRam chip on the NIC. |
3916 | * Return value: | |
3917 | * 0 on success. | |
3918 | */ | |
3919 | ||
3920 | static int s2io_rldram_test(nic_t * sp, uint64_t * data) | |
3921 | { | |
3922 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
3923 | u64 val64; | |
3924 | int cnt, iteration = 0, test_pass = 0; | |
3925 | ||
3926 | val64 = readq(&bar0->adapter_control); | |
3927 | val64 &= ~ADAPTER_ECC_EN; | |
3928 | writeq(val64, &bar0->adapter_control); | |
3929 | ||
3930 | val64 = readq(&bar0->mc_rldram_test_ctrl); | |
3931 | val64 |= MC_RLDRAM_TEST_MODE; | |
3932 | writeq(val64, &bar0->mc_rldram_test_ctrl); | |
3933 | ||
3934 | val64 = readq(&bar0->mc_rldram_mrs); | |
3935 | val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE; | |
3936 | SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF); | |
3937 | ||
3938 | val64 |= MC_RLDRAM_MRS_ENABLE; | |
3939 | SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF); | |
3940 | ||
3941 | while (iteration < 2) { | |
3942 | val64 = 0x55555555aaaa0000ULL; | |
3943 | if (iteration == 1) { | |
3944 | val64 ^= 0xFFFFFFFFFFFF0000ULL; | |
3945 | } | |
3946 | writeq(val64, &bar0->mc_rldram_test_d0); | |
3947 | ||
3948 | val64 = 0xaaaa5a5555550000ULL; | |
3949 | if (iteration == 1) { | |
3950 | val64 ^= 0xFFFFFFFFFFFF0000ULL; | |
3951 | } | |
3952 | writeq(val64, &bar0->mc_rldram_test_d1); | |
3953 | ||
3954 | val64 = 0x55aaaaaaaa5a0000ULL; | |
3955 | if (iteration == 1) { | |
3956 | val64 ^= 0xFFFFFFFFFFFF0000ULL; | |
3957 | } | |
3958 | writeq(val64, &bar0->mc_rldram_test_d2); | |
3959 | ||
3960 | val64 = (u64) (0x0000003fffff0000ULL); | |
3961 | writeq(val64, &bar0->mc_rldram_test_add); | |
3962 | ||
3963 | ||
3964 | val64 = MC_RLDRAM_TEST_MODE; | |
3965 | writeq(val64, &bar0->mc_rldram_test_ctrl); | |
3966 | ||
3967 | val64 |= | |
3968 | MC_RLDRAM_TEST_MODE | MC_RLDRAM_TEST_WRITE | | |
3969 | MC_RLDRAM_TEST_GO; | |
3970 | writeq(val64, &bar0->mc_rldram_test_ctrl); | |
3971 | ||
3972 | for (cnt = 0; cnt < 5; cnt++) { | |
3973 | val64 = readq(&bar0->mc_rldram_test_ctrl); | |
3974 | if (val64 & MC_RLDRAM_TEST_DONE) | |
3975 | break; | |
3976 | msleep(200); | |
3977 | } | |
3978 | ||
3979 | if (cnt == 5) | |
3980 | break; | |
3981 | ||
3982 | val64 = MC_RLDRAM_TEST_MODE; | |
3983 | writeq(val64, &bar0->mc_rldram_test_ctrl); | |
3984 | ||
3985 | val64 |= MC_RLDRAM_TEST_MODE | MC_RLDRAM_TEST_GO; | |
3986 | writeq(val64, &bar0->mc_rldram_test_ctrl); | |
3987 | ||
3988 | for (cnt = 0; cnt < 5; cnt++) { | |
3989 | val64 = readq(&bar0->mc_rldram_test_ctrl); | |
3990 | if (val64 & MC_RLDRAM_TEST_DONE) | |
3991 | break; | |
3992 | msleep(500); | |
3993 | } | |
3994 | ||
3995 | if (cnt == 5) | |
3996 | break; | |
3997 | ||
3998 | val64 = readq(&bar0->mc_rldram_test_ctrl); | |
3999 | if (val64 & MC_RLDRAM_TEST_PASS) | |
4000 | test_pass = 1; | |
4001 | ||
4002 | iteration++; | |
4003 | } | |
4004 | ||
4005 | if (!test_pass) | |
4006 | *data = 1; | |
4007 | else | |
4008 | *data = 0; | |
4009 | ||
4010 | return 0; | |
4011 | } | |
4012 | ||
4013 | /** | |
4014 | * s2io_ethtool_test - conducts 6 tsets to determine the health of card. | |
4015 | * @sp : private member of the device structure, which is a pointer to the | |
4016 | * s2io_nic structure. | |
4017 | * @ethtest : pointer to a ethtool command specific structure that will be | |
4018 | * returned to the user. | |
20346722 | 4019 | * @data : variable that returns the result of each of the test |
1da177e4 LT |
4020 | * conducted by the driver. |
4021 | * Description: | |
4022 | * This function conducts 6 tests ( 4 offline and 2 online) to determine | |
4023 | * the health of the card. | |
4024 | * Return value: | |
4025 | * void | |
4026 | */ | |
4027 | ||
4028 | static void s2io_ethtool_test(struct net_device *dev, | |
4029 | struct ethtool_test *ethtest, | |
4030 | uint64_t * data) | |
4031 | { | |
4032 | nic_t *sp = dev->priv; | |
4033 | int orig_state = netif_running(sp->dev); | |
4034 | ||
4035 | if (ethtest->flags == ETH_TEST_FL_OFFLINE) { | |
4036 | /* Offline Tests. */ | |
20346722 | 4037 | if (orig_state) |
1da177e4 | 4038 | s2io_close(sp->dev); |
1da177e4 LT |
4039 | |
4040 | if (s2io_register_test(sp, &data[0])) | |
4041 | ethtest->flags |= ETH_TEST_FL_FAILED; | |
4042 | ||
4043 | s2io_reset(sp); | |
1da177e4 LT |
4044 | |
4045 | if (s2io_rldram_test(sp, &data[3])) | |
4046 | ethtest->flags |= ETH_TEST_FL_FAILED; | |
4047 | ||
4048 | s2io_reset(sp); | |
1da177e4 LT |
4049 | |
4050 | if (s2io_eeprom_test(sp, &data[1])) | |
4051 | ethtest->flags |= ETH_TEST_FL_FAILED; | |
4052 | ||
4053 | if (s2io_bist_test(sp, &data[4])) | |
4054 | ethtest->flags |= ETH_TEST_FL_FAILED; | |
4055 | ||
4056 | if (orig_state) | |
4057 | s2io_open(sp->dev); | |
4058 | ||
4059 | data[2] = 0; | |
4060 | } else { | |
4061 | /* Online Tests. */ | |
4062 | if (!orig_state) { | |
4063 | DBG_PRINT(ERR_DBG, | |
4064 | "%s: is not up, cannot run test\n", | |
4065 | dev->name); | |
4066 | data[0] = -1; | |
4067 | data[1] = -1; | |
4068 | data[2] = -1; | |
4069 | data[3] = -1; | |
4070 | data[4] = -1; | |
4071 | } | |
4072 | ||
4073 | if (s2io_link_test(sp, &data[2])) | |
4074 | ethtest->flags |= ETH_TEST_FL_FAILED; | |
4075 | ||
4076 | data[0] = 0; | |
4077 | data[1] = 0; | |
4078 | data[3] = 0; | |
4079 | data[4] = 0; | |
4080 | } | |
4081 | } | |
4082 | ||
4083 | static void s2io_get_ethtool_stats(struct net_device *dev, | |
4084 | struct ethtool_stats *estats, | |
4085 | u64 * tmp_stats) | |
4086 | { | |
4087 | int i = 0; | |
4088 | nic_t *sp = dev->priv; | |
4089 | StatInfo_t *stat_info = sp->mac_control.stats_info; | |
4090 | ||
7ba013ac | 4091 | s2io_updt_stats(sp); |
1da177e4 LT |
4092 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_frms); |
4093 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_data_octets); | |
4094 | tmp_stats[i++] = le64_to_cpu(stat_info->tmac_drop_frms); | |
4095 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_mcst_frms); | |
4096 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_bcst_frms); | |
4097 | tmp_stats[i++] = le64_to_cpu(stat_info->tmac_pause_ctrl_frms); | |
4098 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_any_err_frms); | |
4099 | tmp_stats[i++] = le64_to_cpu(stat_info->tmac_vld_ip_octets); | |
4100 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_vld_ip); | |
4101 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_drop_ip); | |
4102 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_icmp); | |
4103 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_rst_tcp); | |
4104 | tmp_stats[i++] = le64_to_cpu(stat_info->tmac_tcp); | |
4105 | tmp_stats[i++] = le32_to_cpu(stat_info->tmac_udp); | |
4106 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_vld_frms); | |
4107 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_data_octets); | |
4108 | tmp_stats[i++] = le64_to_cpu(stat_info->rmac_fcs_err_frms); | |
4109 | tmp_stats[i++] = le64_to_cpu(stat_info->rmac_drop_frms); | |
4110 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_vld_mcst_frms); | |
4111 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_vld_bcst_frms); | |
4112 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_in_rng_len_err_frms); | |
4113 | tmp_stats[i++] = le64_to_cpu(stat_info->rmac_long_frms); | |
4114 | tmp_stats[i++] = le64_to_cpu(stat_info->rmac_pause_ctrl_frms); | |
4115 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_discarded_frms); | |
4116 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_usized_frms); | |
4117 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_osized_frms); | |
4118 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_frag_frms); | |
4119 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_jabber_frms); | |
4120 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_ip); | |
4121 | tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ip_octets); | |
4122 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_hdr_err_ip); | |
4123 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_drop_ip); | |
4124 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_icmp); | |
4125 | tmp_stats[i++] = le64_to_cpu(stat_info->rmac_tcp); | |
4126 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_udp); | |
4127 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_err_drp_udp); | |
4128 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_pause_cnt); | |
4129 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_accepted_ip); | |
4130 | tmp_stats[i++] = le32_to_cpu(stat_info->rmac_err_tcp); | |
7ba013ac | 4131 | tmp_stats[i++] = 0; |
4132 | tmp_stats[i++] = stat_info->sw_stat.single_ecc_errs; | |
4133 | tmp_stats[i++] = stat_info->sw_stat.double_ecc_errs; | |
1da177e4 LT |
4134 | } |
4135 | ||
20346722 | 4136 | int s2io_ethtool_get_regs_len(struct net_device *dev) |
1da177e4 LT |
4137 | { |
4138 | return (XENA_REG_SPACE); | |
4139 | } | |
4140 | ||
4141 | ||
20346722 | 4142 | u32 s2io_ethtool_get_rx_csum(struct net_device * dev) |
1da177e4 LT |
4143 | { |
4144 | nic_t *sp = dev->priv; | |
4145 | ||
4146 | return (sp->rx_csum); | |
4147 | } | |
20346722 | 4148 | int s2io_ethtool_set_rx_csum(struct net_device *dev, u32 data) |
1da177e4 LT |
4149 | { |
4150 | nic_t *sp = dev->priv; | |
4151 | ||
4152 | if (data) | |
4153 | sp->rx_csum = 1; | |
4154 | else | |
4155 | sp->rx_csum = 0; | |
4156 | ||
4157 | return 0; | |
4158 | } | |
20346722 | 4159 | int s2io_get_eeprom_len(struct net_device *dev) |
1da177e4 LT |
4160 | { |
4161 | return (XENA_EEPROM_SPACE); | |
4162 | } | |
4163 | ||
20346722 | 4164 | int s2io_ethtool_self_test_count(struct net_device *dev) |
1da177e4 LT |
4165 | { |
4166 | return (S2IO_TEST_LEN); | |
4167 | } | |
20346722 | 4168 | void s2io_ethtool_get_strings(struct net_device *dev, |
4169 | u32 stringset, u8 * data) | |
1da177e4 LT |
4170 | { |
4171 | switch (stringset) { | |
4172 | case ETH_SS_TEST: | |
4173 | memcpy(data, s2io_gstrings, S2IO_STRINGS_LEN); | |
4174 | break; | |
4175 | case ETH_SS_STATS: | |
4176 | memcpy(data, ðtool_stats_keys, | |
4177 | sizeof(ethtool_stats_keys)); | |
4178 | } | |
4179 | } | |
1da177e4 LT |
4180 | static int s2io_ethtool_get_stats_count(struct net_device *dev) |
4181 | { | |
4182 | return (S2IO_STAT_LEN); | |
4183 | } | |
4184 | ||
20346722 | 4185 | int s2io_ethtool_op_set_tx_csum(struct net_device *dev, u32 data) |
1da177e4 LT |
4186 | { |
4187 | if (data) | |
4188 | dev->features |= NETIF_F_IP_CSUM; | |
4189 | else | |
4190 | dev->features &= ~NETIF_F_IP_CSUM; | |
4191 | ||
4192 | return 0; | |
4193 | } | |
4194 | ||
4195 | ||
4196 | static struct ethtool_ops netdev_ethtool_ops = { | |
4197 | .get_settings = s2io_ethtool_gset, | |
4198 | .set_settings = s2io_ethtool_sset, | |
4199 | .get_drvinfo = s2io_ethtool_gdrvinfo, | |
4200 | .get_regs_len = s2io_ethtool_get_regs_len, | |
4201 | .get_regs = s2io_ethtool_gregs, | |
4202 | .get_link = ethtool_op_get_link, | |
4203 | .get_eeprom_len = s2io_get_eeprom_len, | |
4204 | .get_eeprom = s2io_ethtool_geeprom, | |
4205 | .set_eeprom = s2io_ethtool_seeprom, | |
4206 | .get_pauseparam = s2io_ethtool_getpause_data, | |
4207 | .set_pauseparam = s2io_ethtool_setpause_data, | |
4208 | .get_rx_csum = s2io_ethtool_get_rx_csum, | |
4209 | .set_rx_csum = s2io_ethtool_set_rx_csum, | |
4210 | .get_tx_csum = ethtool_op_get_tx_csum, | |
4211 | .set_tx_csum = s2io_ethtool_op_set_tx_csum, | |
4212 | .get_sg = ethtool_op_get_sg, | |
4213 | .set_sg = ethtool_op_set_sg, | |
4214 | #ifdef NETIF_F_TSO | |
4215 | .get_tso = ethtool_op_get_tso, | |
4216 | .set_tso = ethtool_op_set_tso, | |
4217 | #endif | |
4218 | .self_test_count = s2io_ethtool_self_test_count, | |
4219 | .self_test = s2io_ethtool_test, | |
4220 | .get_strings = s2io_ethtool_get_strings, | |
4221 | .phys_id = s2io_ethtool_idnic, | |
4222 | .get_stats_count = s2io_ethtool_get_stats_count, | |
4223 | .get_ethtool_stats = s2io_get_ethtool_stats | |
4224 | }; | |
4225 | ||
4226 | /** | |
20346722 | 4227 | * s2io_ioctl - Entry point for the Ioctl |
1da177e4 LT |
4228 | * @dev : Device pointer. |
4229 | * @ifr : An IOCTL specefic structure, that can contain a pointer to | |
4230 | * a proprietary structure used to pass information to the driver. | |
4231 | * @cmd : This is used to distinguish between the different commands that | |
4232 | * can be passed to the IOCTL functions. | |
4233 | * Description: | |
20346722 | 4234 | * Currently there are no special functionality supported in IOCTL, hence |
4235 | * function always return EOPNOTSUPPORTED | |
1da177e4 LT |
4236 | */ |
4237 | ||
20346722 | 4238 | int s2io_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
1da177e4 LT |
4239 | { |
4240 | return -EOPNOTSUPP; | |
4241 | } | |
4242 | ||
4243 | /** | |
4244 | * s2io_change_mtu - entry point to change MTU size for the device. | |
4245 | * @dev : device pointer. | |
4246 | * @new_mtu : the new MTU size for the device. | |
4247 | * Description: A driver entry point to change MTU size for the device. | |
4248 | * Before changing the MTU the device must be stopped. | |
4249 | * Return value: | |
4250 | * 0 on success and an appropriate (-)ve integer as defined in errno.h | |
4251 | * file on failure. | |
4252 | */ | |
4253 | ||
20346722 | 4254 | int s2io_change_mtu(struct net_device *dev, int new_mtu) |
1da177e4 LT |
4255 | { |
4256 | nic_t *sp = dev->priv; | |
4257 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
4258 | register u64 val64; | |
4259 | ||
4260 | if (netif_running(dev)) { | |
4261 | DBG_PRINT(ERR_DBG, "%s: Must be stopped to ", dev->name); | |
20346722 | 4262 | DBG_PRINT(ERR_DBG, "change its MTU\n"); |
1da177e4 LT |
4263 | return -EBUSY; |
4264 | } | |
4265 | ||
4266 | if ((new_mtu < MIN_MTU) || (new_mtu > S2IO_JUMBO_SIZE)) { | |
4267 | DBG_PRINT(ERR_DBG, "%s: MTU size is invalid.\n", | |
4268 | dev->name); | |
4269 | return -EPERM; | |
4270 | } | |
4271 | ||
4272 | /* Set the new MTU into the PYLD register of the NIC */ | |
4273 | val64 = new_mtu; | |
4274 | writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len); | |
4275 | ||
4276 | dev->mtu = new_mtu; | |
4277 | ||
4278 | return 0; | |
4279 | } | |
4280 | ||
4281 | /** | |
4282 | * s2io_tasklet - Bottom half of the ISR. | |
4283 | * @dev_adr : address of the device structure in dma_addr_t format. | |
4284 | * Description: | |
4285 | * This is the tasklet or the bottom half of the ISR. This is | |
20346722 | 4286 | * an extension of the ISR which is scheduled by the scheduler to be run |
1da177e4 | 4287 | * when the load on the CPU is low. All low priority tasks of the ISR can |
20346722 | 4288 | * be pushed into the tasklet. For now the tasklet is used only to |
1da177e4 LT |
4289 | * replenish the Rx buffers in the Rx buffer descriptors. |
4290 | * Return value: | |
4291 | * void. | |
4292 | */ | |
4293 | ||
4294 | static void s2io_tasklet(unsigned long dev_addr) | |
4295 | { | |
4296 | struct net_device *dev = (struct net_device *) dev_addr; | |
4297 | nic_t *sp = dev->priv; | |
4298 | int i, ret; | |
4299 | mac_info_t *mac_control; | |
4300 | struct config_param *config; | |
4301 | ||
4302 | mac_control = &sp->mac_control; | |
4303 | config = &sp->config; | |
4304 | ||
4305 | if (!TASKLET_IN_USE) { | |
4306 | for (i = 0; i < config->rx_ring_num; i++) { | |
4307 | ret = fill_rx_buffers(sp, i); | |
4308 | if (ret == -ENOMEM) { | |
4309 | DBG_PRINT(ERR_DBG, "%s: Out of ", | |
4310 | dev->name); | |
4311 | DBG_PRINT(ERR_DBG, "memory in tasklet\n"); | |
4312 | break; | |
4313 | } else if (ret == -EFILL) { | |
4314 | DBG_PRINT(ERR_DBG, | |
4315 | "%s: Rx Ring %d is full\n", | |
4316 | dev->name, i); | |
4317 | break; | |
4318 | } | |
4319 | } | |
4320 | clear_bit(0, (&sp->tasklet_status)); | |
4321 | } | |
4322 | } | |
4323 | ||
4324 | /** | |
4325 | * s2io_set_link - Set the LInk status | |
4326 | * @data: long pointer to device private structue | |
4327 | * Description: Sets the link status for the adapter | |
4328 | */ | |
4329 | ||
4330 | static void s2io_set_link(unsigned long data) | |
4331 | { | |
4332 | nic_t *nic = (nic_t *) data; | |
4333 | struct net_device *dev = nic->dev; | |
4334 | XENA_dev_config_t __iomem *bar0 = nic->bar0; | |
4335 | register u64 val64; | |
4336 | u16 subid; | |
4337 | ||
4338 | if (test_and_set_bit(0, &(nic->link_state))) { | |
4339 | /* The card is being reset, no point doing anything */ | |
4340 | return; | |
4341 | } | |
4342 | ||
4343 | subid = nic->pdev->subsystem_device; | |
20346722 | 4344 | /* |
4345 | * Allow a small delay for the NICs self initiated | |
1da177e4 LT |
4346 | * cleanup to complete. |
4347 | */ | |
4348 | msleep(100); | |
4349 | ||
4350 | val64 = readq(&bar0->adapter_status); | |
20346722 | 4351 | if (verify_xena_quiescence(nic, val64, nic->device_enabled_once)) { |
1da177e4 LT |
4352 | if (LINK_IS_UP(val64)) { |
4353 | val64 = readq(&bar0->adapter_control); | |
4354 | val64 |= ADAPTER_CNTL_EN; | |
4355 | writeq(val64, &bar0->adapter_control); | |
4356 | if (CARDS_WITH_FAULTY_LINK_INDICATORS(subid)) { | |
4357 | val64 = readq(&bar0->gpio_control); | |
4358 | val64 |= GPIO_CTRL_GPIO_0; | |
4359 | writeq(val64, &bar0->gpio_control); | |
4360 | val64 = readq(&bar0->gpio_control); | |
4361 | } else { | |
4362 | val64 |= ADAPTER_LED_ON; | |
4363 | writeq(val64, &bar0->adapter_control); | |
4364 | } | |
4365 | val64 = readq(&bar0->adapter_status); | |
4366 | if (!LINK_IS_UP(val64)) { | |
4367 | DBG_PRINT(ERR_DBG, "%s:", dev->name); | |
4368 | DBG_PRINT(ERR_DBG, " Link down"); | |
4369 | DBG_PRINT(ERR_DBG, "after "); | |
4370 | DBG_PRINT(ERR_DBG, "enabling "); | |
4371 | DBG_PRINT(ERR_DBG, "device \n"); | |
4372 | } | |
4373 | if (nic->device_enabled_once == FALSE) { | |
4374 | nic->device_enabled_once = TRUE; | |
4375 | } | |
4376 | s2io_link(nic, LINK_UP); | |
4377 | } else { | |
4378 | if (CARDS_WITH_FAULTY_LINK_INDICATORS(subid)) { | |
4379 | val64 = readq(&bar0->gpio_control); | |
4380 | val64 &= ~GPIO_CTRL_GPIO_0; | |
4381 | writeq(val64, &bar0->gpio_control); | |
4382 | val64 = readq(&bar0->gpio_control); | |
4383 | } | |
4384 | s2io_link(nic, LINK_DOWN); | |
4385 | } | |
4386 | } else { /* NIC is not Quiescent. */ | |
4387 | DBG_PRINT(ERR_DBG, "%s: Error: ", dev->name); | |
4388 | DBG_PRINT(ERR_DBG, "device is not Quiescent\n"); | |
4389 | netif_stop_queue(dev); | |
4390 | } | |
4391 | clear_bit(0, &(nic->link_state)); | |
4392 | } | |
4393 | ||
4394 | static void s2io_card_down(nic_t * sp) | |
4395 | { | |
4396 | int cnt = 0; | |
4397 | XENA_dev_config_t __iomem *bar0 = sp->bar0; | |
4398 | unsigned long flags; | |
4399 | register u64 val64 = 0; | |
4400 | ||
4401 | /* If s2io_set_link task is executing, wait till it completes. */ | |
20346722 | 4402 | while (test_and_set_bit(0, &(sp->link_state))) { |
1da177e4 | 4403 | msleep(50); |
20346722 | 4404 | } |
1da177e4 LT |
4405 | atomic_set(&sp->card_state, CARD_DOWN); |
4406 | ||
4407 | /* disable Tx and Rx traffic on the NIC */ | |
4408 | stop_nic(sp); | |
4409 | ||
4410 | /* Kill tasklet. */ | |
4411 | tasklet_kill(&sp->task); | |
4412 | ||
4413 | /* Check if the device is Quiescent and then Reset the NIC */ | |
4414 | do { | |
4415 | val64 = readq(&bar0->adapter_status); | |
20346722 | 4416 | if (verify_xena_quiescence(sp, val64, sp->device_enabled_once)) { |
1da177e4 LT |
4417 | break; |
4418 | } | |
4419 | ||
4420 | msleep(50); | |
4421 | cnt++; | |
4422 | if (cnt == 10) { | |
4423 | DBG_PRINT(ERR_DBG, | |
4424 | "s2io_close:Device not Quiescent "); | |
4425 | DBG_PRINT(ERR_DBG, "adaper status reads 0x%llx\n", | |
4426 | (unsigned long long) val64); | |
4427 | break; | |
4428 | } | |
4429 | } while (1); | |
1da177e4 LT |
4430 | s2io_reset(sp); |
4431 | ||
7ba013ac | 4432 | /* Waiting till all Interrupt handlers are complete */ |
4433 | cnt = 0; | |
4434 | do { | |
4435 | msleep(10); | |
4436 | if (!atomic_read(&sp->isr_cnt)) | |
4437 | break; | |
4438 | cnt++; | |
4439 | } while(cnt < 5); | |
4440 | ||
4441 | spin_lock_irqsave(&sp->tx_lock, flags); | |
4442 | /* Free all Tx buffers */ | |
1da177e4 | 4443 | free_tx_buffers(sp); |
7ba013ac | 4444 | spin_unlock_irqrestore(&sp->tx_lock, flags); |
4445 | ||
4446 | /* Free all Rx buffers */ | |
4447 | spin_lock_irqsave(&sp->rx_lock, flags); | |
1da177e4 | 4448 | free_rx_buffers(sp); |
7ba013ac | 4449 | spin_unlock_irqrestore(&sp->rx_lock, flags); |
1da177e4 | 4450 | |
1da177e4 LT |
4451 | clear_bit(0, &(sp->link_state)); |
4452 | } | |
4453 | ||
4454 | static int s2io_card_up(nic_t * sp) | |
4455 | { | |
4456 | int i, ret; | |
4457 | mac_info_t *mac_control; | |
4458 | struct config_param *config; | |
4459 | struct net_device *dev = (struct net_device *) sp->dev; | |
4460 | ||
4461 | /* Initialize the H/W I/O registers */ | |
4462 | if (init_nic(sp) != 0) { | |
4463 | DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n", | |
4464 | dev->name); | |
4465 | return -ENODEV; | |
4466 | } | |
4467 | ||
20346722 | 4468 | /* |
4469 | * Initializing the Rx buffers. For now we are considering only 1 | |
1da177e4 LT |
4470 | * Rx ring and initializing buffers into 30 Rx blocks |
4471 | */ | |
4472 | mac_control = &sp->mac_control; | |
4473 | config = &sp->config; | |
4474 | ||
4475 | for (i = 0; i < config->rx_ring_num; i++) { | |
4476 | if ((ret = fill_rx_buffers(sp, i))) { | |
4477 | DBG_PRINT(ERR_DBG, "%s: Out of memory in Open\n", | |
4478 | dev->name); | |
4479 | s2io_reset(sp); | |
4480 | free_rx_buffers(sp); | |
4481 | return -ENOMEM; | |
4482 | } | |
4483 | DBG_PRINT(INFO_DBG, "Buf in ring:%d is %d:\n", i, | |
4484 | atomic_read(&sp->rx_bufs_left[i])); | |
4485 | } | |
4486 | ||
4487 | /* Setting its receive mode */ | |
4488 | s2io_set_multicast(dev); | |
4489 | ||
4490 | /* Enable tasklet for the device */ | |
4491 | tasklet_init(&sp->task, s2io_tasklet, (unsigned long) dev); | |
4492 | ||
4493 | /* Enable Rx Traffic and interrupts on the NIC */ | |
4494 | if (start_nic(sp)) { | |
4495 | DBG_PRINT(ERR_DBG, "%s: Starting NIC failed\n", dev->name); | |
4496 | tasklet_kill(&sp->task); | |
4497 | s2io_reset(sp); | |
4498 | free_irq(dev->irq, dev); | |
4499 | free_rx_buffers(sp); | |
4500 | return -ENODEV; | |
4501 | } | |
4502 | ||
4503 | atomic_set(&sp->card_state, CARD_UP); | |
4504 | return 0; | |
4505 | } | |
4506 | ||
20346722 | 4507 | /** |
1da177e4 LT |
4508 | * s2io_restart_nic - Resets the NIC. |
4509 | * @data : long pointer to the device private structure | |
4510 | * Description: | |
4511 | * This function is scheduled to be run by the s2io_tx_watchdog | |
20346722 | 4512 | * function after 0.5 secs to reset the NIC. The idea is to reduce |
1da177e4 LT |
4513 | * the run time of the watch dog routine which is run holding a |
4514 | * spin lock. | |
4515 | */ | |
4516 | ||
4517 | static void s2io_restart_nic(unsigned long data) | |
4518 | { | |
4519 | struct net_device *dev = (struct net_device *) data; | |
4520 | nic_t *sp = dev->priv; | |
4521 | ||
4522 | s2io_card_down(sp); | |
4523 | if (s2io_card_up(sp)) { | |
4524 | DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n", | |
4525 | dev->name); | |
4526 | } | |
4527 | netif_wake_queue(dev); | |
4528 | DBG_PRINT(ERR_DBG, "%s: was reset by Tx watchdog timer\n", | |
4529 | dev->name); | |
20346722 | 4530 | |
1da177e4 LT |
4531 | } |
4532 | ||
20346722 | 4533 | /** |
4534 | * s2io_tx_watchdog - Watchdog for transmit side. | |
1da177e4 LT |
4535 | * @dev : Pointer to net device structure |
4536 | * Description: | |
4537 | * This function is triggered if the Tx Queue is stopped | |
4538 | * for a pre-defined amount of time when the Interface is still up. | |
4539 | * If the Interface is jammed in such a situation, the hardware is | |
4540 | * reset (by s2io_close) and restarted again (by s2io_open) to | |
4541 | * overcome any problem that might have been caused in the hardware. | |
4542 | * Return value: | |
4543 | * void | |
4544 | */ | |
4545 | ||
4546 | static void s2io_tx_watchdog(struct net_device *dev) | |
4547 | { | |
4548 | nic_t *sp = dev->priv; | |
4549 | ||
4550 | if (netif_carrier_ok(dev)) { | |
4551 | schedule_work(&sp->rst_timer_task); | |
4552 | } | |
4553 | } | |
4554 | ||
4555 | /** | |
4556 | * rx_osm_handler - To perform some OS related operations on SKB. | |
4557 | * @sp: private member of the device structure,pointer to s2io_nic structure. | |
4558 | * @skb : the socket buffer pointer. | |
4559 | * @len : length of the packet | |
4560 | * @cksum : FCS checksum of the frame. | |
4561 | * @ring_no : the ring from which this RxD was extracted. | |
20346722 | 4562 | * Description: |
1da177e4 LT |
4563 | * This function is called by the Tx interrupt serivce routine to perform |
4564 | * some OS related operations on the SKB before passing it to the upper | |
4565 | * layers. It mainly checks if the checksum is OK, if so adds it to the | |
4566 | * SKBs cksum variable, increments the Rx packet count and passes the SKB | |
4567 | * to the upper layer. If the checksum is wrong, it increments the Rx | |
4568 | * packet error count, frees the SKB and returns error. | |
4569 | * Return value: | |
4570 | * SUCCESS on success and -1 on failure. | |
4571 | */ | |
20346722 | 4572 | static int rx_osm_handler(ring_info_t *ring_data, RxD_t * rxdp) |
1da177e4 | 4573 | { |
20346722 | 4574 | nic_t *sp = ring_data->nic; |
1da177e4 | 4575 | struct net_device *dev = (struct net_device *) sp->dev; |
20346722 | 4576 | struct sk_buff *skb = (struct sk_buff *) |
4577 | ((unsigned long) rxdp->Host_Control); | |
4578 | int ring_no = ring_data->ring_no; | |
1da177e4 LT |
4579 | u16 l3_csum, l4_csum; |
4580 | #ifdef CONFIG_2BUFF_MODE | |
20346722 | 4581 | int buf0_len = RXD_GET_BUFFER0_SIZE(rxdp->Control_2); |
4582 | int buf2_len = RXD_GET_BUFFER2_SIZE(rxdp->Control_2); | |
4583 | int get_block = ring_data->rx_curr_get_info.block_index; | |
4584 | int get_off = ring_data->rx_curr_get_info.offset; | |
4585 | buffAdd_t *ba = &ring_data->ba[get_block][get_off]; | |
1da177e4 | 4586 | unsigned char *buff; |
20346722 | 4587 | #else |
4588 | u16 len = (u16) ((RXD_GET_BUFFER0_SIZE(rxdp->Control_2)) >> 48);; | |
1da177e4 | 4589 | #endif |
20346722 | 4590 | skb->dev = dev; |
4591 | if (rxdp->Control_1 & RXD_T_CODE) { | |
4592 | unsigned long long err = rxdp->Control_1 & RXD_T_CODE; | |
4593 | DBG_PRINT(ERR_DBG, "%s: Rx error Value: 0x%llx\n", | |
4594 | dev->name, err); | |
1ddc50d4 | 4595 | dev_kfree_skb(skb); |
4596 | sp->stats.rx_crc_errors++; | |
4597 | atomic_dec(&sp->rx_bufs_left[ring_no]); | |
4598 | rxdp->Host_Control = 0; | |
4599 | return 0; | |
20346722 | 4600 | } |
1da177e4 | 4601 | |
20346722 | 4602 | /* Updating statistics */ |
4603 | rxdp->Host_Control = 0; | |
4604 | sp->rx_pkt_count++; | |
4605 | sp->stats.rx_packets++; | |
4606 | #ifndef CONFIG_2BUFF_MODE | |
4607 | sp->stats.rx_bytes += len; | |
4608 | #else | |
4609 | sp->stats.rx_bytes += buf0_len + buf2_len; | |
4610 | #endif | |
4611 | ||
4612 | #ifndef CONFIG_2BUFF_MODE | |
4613 | skb_put(skb, len); | |
4614 | #else | |
4615 | buff = skb_push(skb, buf0_len); | |
4616 | memcpy(buff, ba->ba_0, buf0_len); | |
4617 | skb_put(skb, buf2_len); | |
4618 | #endif | |
4619 | ||
4620 | if ((rxdp->Control_1 & TCP_OR_UDP_FRAME) && | |
4621 | (sp->rx_csum)) { | |
4622 | l3_csum = RXD_GET_L3_CKSUM(rxdp->Control_1); | |
1da177e4 LT |
4623 | l4_csum = RXD_GET_L4_CKSUM(rxdp->Control_1); |
4624 | if ((l3_csum == L3_CKSUM_OK) && (l4_csum == L4_CKSUM_OK)) { | |
20346722 | 4625 | /* |
1da177e4 LT |
4626 | * NIC verifies if the Checksum of the received |
4627 | * frame is Ok or not and accordingly returns | |
4628 | * a flag in the RxD. | |
4629 | */ | |
4630 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
4631 | } else { | |
20346722 | 4632 | /* |
4633 | * Packet with erroneous checksum, let the | |
1da177e4 LT |
4634 | * upper layers deal with it. |
4635 | */ | |
4636 | skb->ip_summed = CHECKSUM_NONE; | |
4637 | } | |
4638 | } else { | |
4639 | skb->ip_summed = CHECKSUM_NONE; | |
4640 | } | |
4641 | ||
1da177e4 | 4642 | skb->protocol = eth_type_trans(skb, dev); |
1da177e4 LT |
4643 | #ifdef CONFIG_S2IO_NAPI |
4644 | netif_receive_skb(skb); | |
4645 | #else | |
4646 | netif_rx(skb); | |
4647 | #endif | |
1da177e4 | 4648 | dev->last_rx = jiffies; |
1da177e4 | 4649 | atomic_dec(&sp->rx_bufs_left[ring_no]); |
1da177e4 LT |
4650 | return SUCCESS; |
4651 | } | |
4652 | ||
4653 | /** | |
4654 | * s2io_link - stops/starts the Tx queue. | |
4655 | * @sp : private member of the device structure, which is a pointer to the | |
4656 | * s2io_nic structure. | |
4657 | * @link : inidicates whether link is UP/DOWN. | |
4658 | * Description: | |
4659 | * This function stops/starts the Tx queue depending on whether the link | |
20346722 | 4660 | * status of the NIC is is down or up. This is called by the Alarm |
4661 | * interrupt handler whenever a link change interrupt comes up. | |
1da177e4 LT |
4662 | * Return value: |
4663 | * void. | |
4664 | */ | |
4665 | ||
20346722 | 4666 | void s2io_link(nic_t * sp, int link) |
1da177e4 LT |
4667 | { |
4668 | struct net_device *dev = (struct net_device *) sp->dev; | |
4669 | ||
4670 | if (link != sp->last_link_state) { | |
4671 | if (link == LINK_DOWN) { | |
4672 | DBG_PRINT(ERR_DBG, "%s: Link down\n", dev->name); | |
4673 | netif_carrier_off(dev); | |
4674 | } else { | |
4675 | DBG_PRINT(ERR_DBG, "%s: Link Up\n", dev->name); | |
4676 | netif_carrier_on(dev); | |
4677 | } | |
4678 | } | |
4679 | sp->last_link_state = link; | |
4680 | } | |
4681 | ||
4682 | /** | |
20346722 | 4683 | * get_xena_rev_id - to identify revision ID of xena. |
4684 | * @pdev : PCI Dev structure | |
4685 | * Description: | |
4686 | * Function to identify the Revision ID of xena. | |
4687 | * Return value: | |
4688 | * returns the revision ID of the device. | |
4689 | */ | |
4690 | ||
4691 | int get_xena_rev_id(struct pci_dev *pdev) | |
4692 | { | |
4693 | u8 id = 0; | |
4694 | int ret; | |
4695 | ret = pci_read_config_byte(pdev, PCI_REVISION_ID, (u8 *) & id); | |
4696 | return id; | |
4697 | } | |
4698 | ||
4699 | /** | |
4700 | * s2io_init_pci -Initialization of PCI and PCI-X configuration registers . | |
4701 | * @sp : private member of the device structure, which is a pointer to the | |
1da177e4 LT |
4702 | * s2io_nic structure. |
4703 | * Description: | |
4704 | * This function initializes a few of the PCI and PCI-X configuration registers | |
4705 | * with recommended values. | |
4706 | * Return value: | |
4707 | * void | |
4708 | */ | |
4709 | ||
4710 | static void s2io_init_pci(nic_t * sp) | |
4711 | { | |
20346722 | 4712 | u16 pci_cmd = 0, pcix_cmd = 0; |
1da177e4 LT |
4713 | |
4714 | /* Enable Data Parity Error Recovery in PCI-X command register. */ | |
4715 | pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER, | |
20346722 | 4716 | &(pcix_cmd)); |
1da177e4 | 4717 | pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER, |
20346722 | 4718 | (pcix_cmd | 1)); |
1da177e4 | 4719 | pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER, |
20346722 | 4720 | &(pcix_cmd)); |
1da177e4 LT |
4721 | |
4722 | /* Set the PErr Response bit in PCI command register. */ | |
4723 | pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd); | |
4724 | pci_write_config_word(sp->pdev, PCI_COMMAND, | |
4725 | (pci_cmd | PCI_COMMAND_PARITY)); | |
4726 | pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd); | |
4727 | ||
1da177e4 | 4728 | /* Forcibly disabling relaxed ordering capability of the card. */ |
20346722 | 4729 | pcix_cmd &= 0xfffd; |
1da177e4 | 4730 | pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER, |
20346722 | 4731 | pcix_cmd); |
1da177e4 | 4732 | pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER, |
20346722 | 4733 | &(pcix_cmd)); |
1da177e4 LT |
4734 | } |
4735 | ||
4736 | MODULE_AUTHOR("Raghavendra Koushik <raghavendra.koushik@neterion.com>"); | |
4737 | MODULE_LICENSE("GPL"); | |
4738 | module_param(tx_fifo_num, int, 0); | |
1da177e4 | 4739 | module_param(rx_ring_num, int, 0); |
20346722 | 4740 | module_param_array(tx_fifo_len, uint, NULL, 0); |
4741 | module_param_array(rx_ring_sz, uint, NULL, 0); | |
20346722 | 4742 | module_param_array(rts_frm_len, uint, NULL, 0); |
5e25b9dd | 4743 | module_param(use_continuous_tx_intrs, int, 1); |
1da177e4 LT |
4744 | module_param(rmac_pause_time, int, 0); |
4745 | module_param(mc_pause_threshold_q0q3, int, 0); | |
4746 | module_param(mc_pause_threshold_q4q7, int, 0); | |
4747 | module_param(shared_splits, int, 0); | |
4748 | module_param(tmac_util_period, int, 0); | |
4749 | module_param(rmac_util_period, int, 0); | |
4750 | #ifndef CONFIG_S2IO_NAPI | |
4751 | module_param(indicate_max_pkts, int, 0); | |
4752 | #endif | |
20346722 | 4753 | |
1da177e4 | 4754 | /** |
20346722 | 4755 | * s2io_init_nic - Initialization of the adapter . |
1da177e4 LT |
4756 | * @pdev : structure containing the PCI related information of the device. |
4757 | * @pre: List of PCI devices supported by the driver listed in s2io_tbl. | |
4758 | * Description: | |
4759 | * The function initializes an adapter identified by the pci_dec structure. | |
20346722 | 4760 | * All OS related initialization including memory and device structure and |
4761 | * initlaization of the device private variable is done. Also the swapper | |
4762 | * control register is initialized to enable read and write into the I/O | |
1da177e4 LT |
4763 | * registers of the device. |
4764 | * Return value: | |
4765 | * returns 0 on success and negative on failure. | |
4766 | */ | |
4767 | ||
4768 | static int __devinit | |
4769 | s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre) | |
4770 | { | |
4771 | nic_t *sp; | |
4772 | struct net_device *dev; | |
1da177e4 LT |
4773 | int i, j, ret; |
4774 | int dma_flag = FALSE; | |
4775 | u32 mac_up, mac_down; | |
4776 | u64 val64 = 0, tmp64 = 0; | |
4777 | XENA_dev_config_t __iomem *bar0 = NULL; | |
4778 | u16 subid; | |
4779 | mac_info_t *mac_control; | |
4780 | struct config_param *config; | |
4781 | ||
20346722 | 4782 | #ifdef CONFIG_S2IO_NAPI |
4783 | DBG_PRINT(ERR_DBG, "NAPI support has been enabled\n"); | |
4784 | #endif | |
1da177e4 LT |
4785 | |
4786 | if ((ret = pci_enable_device(pdev))) { | |
4787 | DBG_PRINT(ERR_DBG, | |
4788 | "s2io_init_nic: pci_enable_device failed\n"); | |
4789 | return ret; | |
4790 | } | |
4791 | ||
1e7f0bd8 | 4792 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { |
1da177e4 LT |
4793 | DBG_PRINT(INIT_DBG, "s2io_init_nic: Using 64bit DMA\n"); |
4794 | dma_flag = TRUE; | |
1da177e4 | 4795 | if (pci_set_consistent_dma_mask |
1e7f0bd8 | 4796 | (pdev, DMA_64BIT_MASK)) { |
1da177e4 LT |
4797 | DBG_PRINT(ERR_DBG, |
4798 | "Unable to obtain 64bit DMA for \ | |
4799 | consistent allocations\n"); | |
4800 | pci_disable_device(pdev); | |
4801 | return -ENOMEM; | |
4802 | } | |
1e7f0bd8 | 4803 | } else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { |
1da177e4 LT |
4804 | DBG_PRINT(INIT_DBG, "s2io_init_nic: Using 32bit DMA\n"); |
4805 | } else { | |
4806 | pci_disable_device(pdev); | |
4807 | return -ENOMEM; | |
4808 | } | |
4809 | ||
4810 | if (pci_request_regions(pdev, s2io_driver_name)) { | |
4811 | DBG_PRINT(ERR_DBG, "Request Regions failed\n"), | |
4812 | pci_disable_device(pdev); | |
4813 | return -ENODEV; | |
4814 | } | |
4815 | ||
4816 | dev = alloc_etherdev(sizeof(nic_t)); | |
4817 | if (dev == NULL) { | |
4818 | DBG_PRINT(ERR_DBG, "Device allocation failed\n"); | |
4819 | pci_disable_device(pdev); | |
4820 | pci_release_regions(pdev); | |
4821 | return -ENODEV; | |
4822 | } | |
4823 | ||
4824 | pci_set_master(pdev); | |
4825 | pci_set_drvdata(pdev, dev); | |
4826 | SET_MODULE_OWNER(dev); | |
4827 | SET_NETDEV_DEV(dev, &pdev->dev); | |
4828 | ||
4829 | /* Private member variable initialized to s2io NIC structure */ | |
4830 | sp = dev->priv; | |
4831 | memset(sp, 0, sizeof(nic_t)); | |
4832 | sp->dev = dev; | |
4833 | sp->pdev = pdev; | |
1da177e4 | 4834 | sp->high_dma_flag = dma_flag; |
1da177e4 | 4835 | sp->device_enabled_once = FALSE; |
1da177e4 LT |
4836 | |
4837 | /* Initialize some PCI/PCI-X fields of the NIC. */ | |
4838 | s2io_init_pci(sp); | |
4839 | ||
20346722 | 4840 | /* |
1da177e4 | 4841 | * Setting the device configuration parameters. |
20346722 | 4842 | * Most of these parameters can be specified by the user during |
4843 | * module insertion as they are module loadable parameters. If | |
4844 | * these parameters are not not specified during load time, they | |
1da177e4 LT |
4845 | * are initialized with default values. |
4846 | */ | |
4847 | mac_control = &sp->mac_control; | |
4848 | config = &sp->config; | |
4849 | ||
4850 | /* Tx side parameters. */ | |
4851 | tx_fifo_len[0] = DEFAULT_FIFO_LEN; /* Default value. */ | |
4852 | config->tx_fifo_num = tx_fifo_num; | |
4853 | for (i = 0; i < MAX_TX_FIFOS; i++) { | |
4854 | config->tx_cfg[i].fifo_len = tx_fifo_len[i]; | |
4855 | config->tx_cfg[i].fifo_priority = i; | |
4856 | } | |
4857 | ||
20346722 | 4858 | /* mapping the QoS priority to the configured fifos */ |
4859 | for (i = 0; i < MAX_TX_FIFOS; i++) | |
4860 | config->fifo_mapping[i] = fifo_map[config->tx_fifo_num][i]; | |
4861 | ||
1da177e4 LT |
4862 | config->tx_intr_type = TXD_INT_TYPE_UTILZ; |
4863 | for (i = 0; i < config->tx_fifo_num; i++) { | |
4864 | config->tx_cfg[i].f_no_snoop = | |
4865 | (NO_SNOOP_TXD | NO_SNOOP_TXD_BUFFER); | |
4866 | if (config->tx_cfg[i].fifo_len < 65) { | |
4867 | config->tx_intr_type = TXD_INT_TYPE_PER_LIST; | |
4868 | break; | |
4869 | } | |
4870 | } | |
4871 | config->max_txds = MAX_SKB_FRAGS; | |
4872 | ||
4873 | /* Rx side parameters. */ | |
4874 | rx_ring_sz[0] = SMALL_BLK_CNT; /* Default value. */ | |
4875 | config->rx_ring_num = rx_ring_num; | |
4876 | for (i = 0; i < MAX_RX_RINGS; i++) { | |
4877 | config->rx_cfg[i].num_rxd = rx_ring_sz[i] * | |
4878 | (MAX_RXDS_PER_BLOCK + 1); | |
4879 | config->rx_cfg[i].ring_priority = i; | |
4880 | } | |
4881 | ||
4882 | for (i = 0; i < rx_ring_num; i++) { | |
4883 | config->rx_cfg[i].ring_org = RING_ORG_BUFF1; | |
4884 | config->rx_cfg[i].f_no_snoop = | |
4885 | (NO_SNOOP_RXD | NO_SNOOP_RXD_BUFFER); | |
4886 | } | |
4887 | ||
4888 | /* Setting Mac Control parameters */ | |
4889 | mac_control->rmac_pause_time = rmac_pause_time; | |
4890 | mac_control->mc_pause_threshold_q0q3 = mc_pause_threshold_q0q3; | |
4891 | mac_control->mc_pause_threshold_q4q7 = mc_pause_threshold_q4q7; | |
4892 | ||
4893 | ||
4894 | /* Initialize Ring buffer parameters. */ | |
4895 | for (i = 0; i < config->rx_ring_num; i++) | |
4896 | atomic_set(&sp->rx_bufs_left[i], 0); | |
4897 | ||
7ba013ac | 4898 | /* Initialize the number of ISRs currently running */ |
4899 | atomic_set(&sp->isr_cnt, 0); | |
4900 | ||
1da177e4 LT |
4901 | /* initialize the shared memory used by the NIC and the host */ |
4902 | if (init_shared_mem(sp)) { | |
4903 | DBG_PRINT(ERR_DBG, "%s: Memory allocation failed\n", | |
4904 | dev->name); | |
4905 | ret = -ENOMEM; | |
4906 | goto mem_alloc_failed; | |
4907 | } | |
4908 | ||
4909 | sp->bar0 = ioremap(pci_resource_start(pdev, 0), | |
4910 | pci_resource_len(pdev, 0)); | |
4911 | if (!sp->bar0) { | |
4912 | DBG_PRINT(ERR_DBG, "%s: S2IO: cannot remap io mem1\n", | |
4913 | dev->name); | |
4914 | ret = -ENOMEM; | |
4915 | goto bar0_remap_failed; | |
4916 | } | |
4917 | ||
4918 | sp->bar1 = ioremap(pci_resource_start(pdev, 2), | |
4919 | pci_resource_len(pdev, 2)); | |
4920 | if (!sp->bar1) { | |
4921 | DBG_PRINT(ERR_DBG, "%s: S2IO: cannot remap io mem2\n", | |
4922 | dev->name); | |
4923 | ret = -ENOMEM; | |
4924 | goto bar1_remap_failed; | |
4925 | } | |
4926 | ||
4927 | dev->irq = pdev->irq; | |
4928 | dev->base_addr = (unsigned long) sp->bar0; | |
4929 | ||
4930 | /* Initializing the BAR1 address as the start of the FIFO pointer. */ | |
4931 | for (j = 0; j < MAX_TX_FIFOS; j++) { | |
4932 | mac_control->tx_FIFO_start[j] = (TxFIFO_element_t __iomem *) | |
4933 | (sp->bar1 + (j * 0x00020000)); | |
4934 | } | |
4935 | ||
4936 | /* Driver entry points */ | |
4937 | dev->open = &s2io_open; | |
4938 | dev->stop = &s2io_close; | |
4939 | dev->hard_start_xmit = &s2io_xmit; | |
4940 | dev->get_stats = &s2io_get_stats; | |
4941 | dev->set_multicast_list = &s2io_set_multicast; | |
4942 | dev->do_ioctl = &s2io_ioctl; | |
4943 | dev->change_mtu = &s2io_change_mtu; | |
4944 | SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); | |
20346722 | 4945 | |
1da177e4 LT |
4946 | /* |
4947 | * will use eth_mac_addr() for dev->set_mac_address | |
4948 | * mac address will be set every time dev->open() is called | |
4949 | */ | |
20346722 | 4950 | #if defined(CONFIG_S2IO_NAPI) |
1da177e4 | 4951 | dev->poll = s2io_poll; |
20346722 | 4952 | dev->weight = 32; |
1da177e4 LT |
4953 | #endif |
4954 | ||
4955 | dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM; | |
4956 | if (sp->high_dma_flag == TRUE) | |
4957 | dev->features |= NETIF_F_HIGHDMA; | |
4958 | #ifdef NETIF_F_TSO | |
4959 | dev->features |= NETIF_F_TSO; | |
4960 | #endif | |
4961 | ||
4962 | dev->tx_timeout = &s2io_tx_watchdog; | |
4963 | dev->watchdog_timeo = WATCH_DOG_TIMEOUT; | |
4964 | INIT_WORK(&sp->rst_timer_task, | |
4965 | (void (*)(void *)) s2io_restart_nic, dev); | |
4966 | INIT_WORK(&sp->set_link_task, | |
4967 | (void (*)(void *)) s2io_set_link, sp); | |
4968 | ||
4969 | pci_save_state(sp->pdev); | |
4970 | ||
4971 | /* Setting swapper control on the NIC, for proper reset operation */ | |
4972 | if (s2io_set_swapper(sp)) { | |
4973 | DBG_PRINT(ERR_DBG, "%s:swapper settings are wrong\n", | |
4974 | dev->name); | |
4975 | ret = -EAGAIN; | |
4976 | goto set_swap_failed; | |
4977 | } | |
4978 | ||
20346722 | 4979 | /* |
4980 | * Fix for all "FFs" MAC address problems observed on | |
4981 | * Alpha platforms | |
4982 | */ | |
1da177e4 LT |
4983 | fix_mac_address(sp); |
4984 | s2io_reset(sp); | |
4985 | ||
4986 | /* | |
1da177e4 LT |
4987 | * MAC address initialization. |
4988 | * For now only one mac address will be read and used. | |
4989 | */ | |
4990 | bar0 = sp->bar0; | |
4991 | val64 = RMAC_ADDR_CMD_MEM_RD | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD | | |
4992 | RMAC_ADDR_CMD_MEM_OFFSET(0 + MAC_MAC_ADDR_START_OFFSET); | |
4993 | writeq(val64, &bar0->rmac_addr_cmd_mem); | |
4994 | wait_for_cmd_complete(sp); | |
4995 | ||
4996 | tmp64 = readq(&bar0->rmac_addr_data0_mem); | |
4997 | mac_down = (u32) tmp64; | |
4998 | mac_up = (u32) (tmp64 >> 32); | |
4999 | ||
5000 | memset(sp->def_mac_addr[0].mac_addr, 0, sizeof(ETH_ALEN)); | |
5001 | ||
5002 | sp->def_mac_addr[0].mac_addr[3] = (u8) (mac_up); | |
5003 | sp->def_mac_addr[0].mac_addr[2] = (u8) (mac_up >> 8); | |
5004 | sp->def_mac_addr[0].mac_addr[1] = (u8) (mac_up >> 16); | |
5005 | sp->def_mac_addr[0].mac_addr[0] = (u8) (mac_up >> 24); | |
5006 | sp->def_mac_addr[0].mac_addr[5] = (u8) (mac_down >> 16); | |
5007 | sp->def_mac_addr[0].mac_addr[4] = (u8) (mac_down >> 24); | |
5008 | ||
5009 | DBG_PRINT(INIT_DBG, | |
5010 | "DEFAULT MAC ADDR:0x%02x-%02x-%02x-%02x-%02x-%02x\n", | |
5011 | sp->def_mac_addr[0].mac_addr[0], | |
5012 | sp->def_mac_addr[0].mac_addr[1], | |
5013 | sp->def_mac_addr[0].mac_addr[2], | |
5014 | sp->def_mac_addr[0].mac_addr[3], | |
5015 | sp->def_mac_addr[0].mac_addr[4], | |
5016 | sp->def_mac_addr[0].mac_addr[5]); | |
5017 | ||
5018 | /* Set the factory defined MAC address initially */ | |
5019 | dev->addr_len = ETH_ALEN; | |
5020 | memcpy(dev->dev_addr, sp->def_mac_addr, ETH_ALEN); | |
5021 | ||
5022 | /* | |
20346722 | 5023 | * Initialize the tasklet status and link state flags |
1da177e4 LT |
5024 | * and the card statte parameter |
5025 | */ | |
5026 | atomic_set(&(sp->card_state), 0); | |
5027 | sp->tasklet_status = 0; | |
5028 | sp->link_state = 0; | |
5029 | ||
1da177e4 LT |
5030 | /* Initialize spinlocks */ |
5031 | spin_lock_init(&sp->tx_lock); | |
5032 | #ifndef CONFIG_S2IO_NAPI | |
5033 | spin_lock_init(&sp->put_lock); | |
5034 | #endif | |
7ba013ac | 5035 | spin_lock_init(&sp->rx_lock); |
1da177e4 | 5036 | |
20346722 | 5037 | /* |
5038 | * SXE-002: Configure link and activity LED to init state | |
5039 | * on driver load. | |
1da177e4 LT |
5040 | */ |
5041 | subid = sp->pdev->subsystem_device; | |
5042 | if ((subid & 0xFF) >= 0x07) { | |
5043 | val64 = readq(&bar0->gpio_control); | |
5044 | val64 |= 0x0000800000000000ULL; | |
5045 | writeq(val64, &bar0->gpio_control); | |
5046 | val64 = 0x0411040400000000ULL; | |
5047 | writeq(val64, (void __iomem *) bar0 + 0x2700); | |
5048 | val64 = readq(&bar0->gpio_control); | |
5049 | } | |
5050 | ||
5051 | sp->rx_csum = 1; /* Rx chksum verify enabled by default */ | |
5052 | ||
5053 | if (register_netdev(dev)) { | |
5054 | DBG_PRINT(ERR_DBG, "Device registration failed\n"); | |
5055 | ret = -ENODEV; | |
5056 | goto register_failed; | |
5057 | } | |
5058 | ||
7ba013ac | 5059 | /* Initialize device name */ |
5060 | strcpy(sp->name, dev->name); | |
5061 | strcat(sp->name, ": Neterion Xframe I 10GbE adapter"); | |
5062 | ||
20346722 | 5063 | /* |
5064 | * Make Link state as off at this point, when the Link change | |
5065 | * interrupt comes the state will be automatically changed to | |
1da177e4 LT |
5066 | * the right state. |
5067 | */ | |
5068 | netif_carrier_off(dev); | |
1da177e4 LT |
5069 | |
5070 | return 0; | |
5071 | ||
5072 | register_failed: | |
5073 | set_swap_failed: | |
5074 | iounmap(sp->bar1); | |
5075 | bar1_remap_failed: | |
5076 | iounmap(sp->bar0); | |
5077 | bar0_remap_failed: | |
5078 | mem_alloc_failed: | |
5079 | free_shared_mem(sp); | |
5080 | pci_disable_device(pdev); | |
5081 | pci_release_regions(pdev); | |
5082 | pci_set_drvdata(pdev, NULL); | |
5083 | free_netdev(dev); | |
5084 | ||
5085 | return ret; | |
5086 | } | |
5087 | ||
5088 | /** | |
20346722 | 5089 | * s2io_rem_nic - Free the PCI device |
1da177e4 | 5090 | * @pdev: structure containing the PCI related information of the device. |
20346722 | 5091 | * Description: This function is called by the Pci subsystem to release a |
1da177e4 | 5092 | * PCI device and free up all resource held up by the device. This could |
20346722 | 5093 | * be in response to a Hot plug event or when the driver is to be removed |
1da177e4 LT |
5094 | * from memory. |
5095 | */ | |
5096 | ||
5097 | static void __devexit s2io_rem_nic(struct pci_dev *pdev) | |
5098 | { | |
5099 | struct net_device *dev = | |
5100 | (struct net_device *) pci_get_drvdata(pdev); | |
5101 | nic_t *sp; | |
5102 | ||
5103 | if (dev == NULL) { | |
5104 | DBG_PRINT(ERR_DBG, "Driver Data is NULL!!\n"); | |
5105 | return; | |
5106 | } | |
5107 | ||
5108 | sp = dev->priv; | |
5109 | unregister_netdev(dev); | |
5110 | ||
5111 | free_shared_mem(sp); | |
5112 | iounmap(sp->bar0); | |
5113 | iounmap(sp->bar1); | |
5114 | pci_disable_device(pdev); | |
5115 | pci_release_regions(pdev); | |
5116 | pci_set_drvdata(pdev, NULL); | |
1da177e4 LT |
5117 | free_netdev(dev); |
5118 | } | |
5119 | ||
5120 | /** | |
5121 | * s2io_starter - Entry point for the driver | |
5122 | * Description: This function is the entry point for the driver. It verifies | |
5123 | * the module loadable parameters and initializes PCI configuration space. | |
5124 | */ | |
5125 | ||
5126 | int __init s2io_starter(void) | |
5127 | { | |
5128 | return pci_module_init(&s2io_driver); | |
5129 | } | |
5130 | ||
5131 | /** | |
20346722 | 5132 | * s2io_closer - Cleanup routine for the driver |
1da177e4 LT |
5133 | * Description: This function is the cleanup routine for the driver. It unregist * ers the driver. |
5134 | */ | |
5135 | ||
20346722 | 5136 | void s2io_closer(void) |
1da177e4 LT |
5137 | { |
5138 | pci_unregister_driver(&s2io_driver); | |
5139 | DBG_PRINT(INIT_DBG, "cleanup done\n"); | |
5140 | } | |
5141 | ||
5142 | module_init(s2io_starter); | |
5143 | module_exit(s2io_closer); |