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3d396eb1 AK |
1 | /* |
2 | * Copyright (C) 2003 - 2006 NetXen, Inc. | |
3 | * All rights reserved. | |
80922fbc | 4 | * |
3d396eb1 AK |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version 2 | |
8 | * of the License, or (at your option) any later version. | |
80922fbc | 9 | * |
3d396eb1 AK |
10 | * This program is distributed in the hope that it will be useful, but |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
80922fbc | 14 | * |
3d396eb1 AK |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | * MA 02111-1307, USA. | |
80922fbc | 19 | * |
3d396eb1 AK |
20 | * The full GNU General Public License is included in this distribution |
21 | * in the file called LICENSE. | |
80922fbc | 22 | * |
3d396eb1 AK |
23 | * Contact Information: |
24 | * info@netxen.com | |
25 | * NetXen, | |
26 | * 3965 Freedom Circle, Fourth floor, | |
27 | * Santa Clara, CA 95054 | |
28 | * | |
29 | * | |
30 | * Main source file for NetXen NIC Driver on Linux | |
31 | * | |
32 | */ | |
33 | ||
cb8011ad | 34 | #include <linux/vmalloc.h> |
ed25ffa1 | 35 | #include <linux/highmem.h> |
3d396eb1 AK |
36 | #include "netxen_nic_hw.h" |
37 | ||
38 | #include "netxen_nic.h" | |
3d396eb1 | 39 | #include "netxen_nic_phan_reg.h" |
3d396eb1 | 40 | |
1494a814 | 41 | #include <linux/dma-mapping.h> |
c9bdd4b5 | 42 | #include <net/ip.h> |
1494a814 | 43 | |
3d396eb1 AK |
44 | MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver"); |
45 | MODULE_LICENSE("GPL"); | |
46 | MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); | |
47 | ||
ceded32f | 48 | char netxen_nic_driver_name[] = "netxen_nic"; |
3d396eb1 | 49 | static char netxen_nic_driver_string[] = "NetXen Network Driver version " |
cb8011ad | 50 | NETXEN_NIC_LINUX_VERSIONID; |
3d396eb1 | 51 | |
2956640d DP |
52 | static int port_mode = NETXEN_PORT_MODE_AUTO_NEG; |
53 | ||
54 | /* Default to restricted 1G auto-neg mode */ | |
55 | static int wol_port_mode = 5; | |
56 | ||
57 | static int use_msi = 1; | |
58 | ||
59 | static int use_msi_x = 1; | |
60 | ||
3d396eb1 AK |
61 | #define NETXEN_NETDEV_WEIGHT 120 |
62 | #define NETXEN_ADAPTER_UP_MAGIC 777 | |
cb8011ad | 63 | #define NETXEN_NIC_PEG_TUNE 0 |
3d396eb1 AK |
64 | |
65 | /* Local functions to NetXen NIC driver */ | |
66 | static int __devinit netxen_nic_probe(struct pci_dev *pdev, | |
2956640d | 67 | const struct pci_device_id *ent); |
3d396eb1 AK |
68 | static void __devexit netxen_nic_remove(struct pci_dev *pdev); |
69 | static int netxen_nic_open(struct net_device *netdev); | |
70 | static int netxen_nic_close(struct net_device *netdev); | |
71 | static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *); | |
72 | static void netxen_tx_timeout(struct net_device *netdev); | |
6d5aefb8 | 73 | static void netxen_tx_timeout_task(struct work_struct *work); |
3d396eb1 | 74 | static void netxen_watchdog(unsigned long); |
bea3348e | 75 | static int netxen_nic_poll(struct napi_struct *napi, int budget); |
3d396eb1 AK |
76 | #ifdef CONFIG_NET_POLL_CONTROLLER |
77 | static void netxen_nic_poll_controller(struct net_device *netdev); | |
78 | #endif | |
1494a814 | 79 | static irqreturn_t netxen_intr(int irq, void *data); |
05aaa02d | 80 | static irqreturn_t netxen_msi_intr(int irq, void *data); |
3d396eb1 AK |
81 | |
82 | /* PCI Device ID Table */ | |
70081ac5 AV |
83 | #define ENTRY(device) \ |
84 | {PCI_DEVICE(0x4040, (device)), \ | |
85 | .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0} | |
86 | ||
3d396eb1 | 87 | static struct pci_device_id netxen_pci_tbl[] __devinitdata = { |
70081ac5 AV |
88 | ENTRY(0x0001), |
89 | ENTRY(0x0002), | |
90 | ENTRY(0x0003), | |
91 | ENTRY(0x0004), | |
92 | ENTRY(0x0005), | |
93 | ENTRY(0x0024), | |
94 | ENTRY(0x0025), | |
e4c93c81 | 95 | ENTRY(0x0100), |
3d396eb1 AK |
96 | {0,} |
97 | }; | |
98 | ||
99 | MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); | |
100 | ||
b1555130 AB |
101 | /* |
102 | * In netxen_nic_down(), we must wait for any pending callback requests into | |
103 | * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be | |
104 | * reenabled right after it is deleted in netxen_nic_down(). | |
105 | * FLUSH_SCHEDULED_WORK() does this synchronization. | |
106 | * | |
107 | * Normally, schedule_work()/flush_scheduled_work() could have worked, but | |
108 | * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off() | |
109 | * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a | |
110 | * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause | |
111 | * linkwatch_event() to be executed which also attempts to acquire the rtnl | |
112 | * lock thus causing a deadlock. | |
113 | */ | |
114 | ||
115 | static struct workqueue_struct *netxen_workq; | |
116 | #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp) | |
117 | #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq) | |
118 | ||
ed25ffa1 AK |
119 | static void netxen_watchdog(unsigned long); |
120 | ||
7830b22c DP |
121 | static uint32_t crb_cmd_producer[4] = { |
122 | CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1, | |
123 | CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3 | |
124 | }; | |
125 | ||
3ce06a32 DP |
126 | static inline void |
127 | netxen_nic_update_cmd_producer(struct netxen_adapter *adapter, | |
128 | uint32_t crb_producer) | |
3176ff3e | 129 | { |
3ce06a32 DP |
130 | adapter->pci_write_normalize(adapter, |
131 | adapter->crb_addr_cmd_producer, crb_producer); | |
3176ff3e MT |
132 | } |
133 | ||
7830b22c DP |
134 | static uint32_t crb_cmd_consumer[4] = { |
135 | CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1, | |
136 | CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3 | |
137 | }; | |
138 | ||
3ce06a32 DP |
139 | static inline void |
140 | netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, | |
141 | u32 crb_consumer) | |
3176ff3e | 142 | { |
3ce06a32 DP |
143 | adapter->pci_write_normalize(adapter, |
144 | adapter->crb_addr_cmd_consumer, crb_consumer); | |
3176ff3e MT |
145 | } |
146 | ||
2956640d | 147 | static uint32_t msi_tgt_status[8] = { |
443be796 | 148 | ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1, |
2956640d DP |
149 | ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3, |
150 | ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5, | |
151 | ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7 | |
443be796 DP |
152 | }; |
153 | ||
154 | static uint32_t sw_int_mask[4] = { | |
155 | CRB_SW_INT_MASK_0, CRB_SW_INT_MASK_1, | |
156 | CRB_SW_INT_MASK_2, CRB_SW_INT_MASK_3 | |
157 | }; | |
158 | ||
2956640d DP |
159 | static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG; |
160 | ||
4638aef1 SH |
161 | static void netxen_nic_disable_int(struct netxen_adapter *adapter) |
162 | { | |
443be796 | 163 | u32 mask = 0x7ff; |
4638aef1 | 164 | int retries = 32; |
443be796 DP |
165 | int port = adapter->portnum; |
166 | int pci_fn = adapter->ahw.pci_func; | |
4638aef1 | 167 | |
f0c88f9c | 168 | if (adapter->msi_mode != MSI_MODE_MULTIFUNC) |
3ce06a32 | 169 | adapter->pci_write_normalize(adapter, sw_int_mask[port], 0); |
4638aef1 SH |
170 | |
171 | if (adapter->intr_scheme != -1 && | |
172 | adapter->intr_scheme != INTR_SCHEME_PERPORT) | |
3ce06a32 | 173 | adapter->pci_write_immediate(adapter, ISR_INT_MASK, mask); |
4638aef1 | 174 | |
2956640d | 175 | if (!NETXEN_IS_MSI_FAMILY(adapter)) { |
4638aef1 | 176 | do { |
3ce06a32 DP |
177 | adapter->pci_write_immediate(adapter, |
178 | ISR_INT_TARGET_STATUS, 0xffffffff); | |
179 | mask = adapter->pci_read_immediate(adapter, | |
180 | ISR_INT_VECTOR); | |
4638aef1 SH |
181 | if (!(mask & 0x80)) |
182 | break; | |
183 | udelay(10); | |
184 | } while (--retries); | |
185 | ||
186 | if (!retries) { | |
187 | printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n", | |
188 | netxen_nic_driver_name); | |
189 | } | |
443be796 DP |
190 | } else { |
191 | if (adapter->msi_mode == MSI_MODE_MULTIFUNC) { | |
3ce06a32 DP |
192 | adapter->pci_write_immediate(adapter, |
193 | msi_tgt_status[pci_fn], 0xffffffff); | |
443be796 | 194 | } |
4638aef1 | 195 | } |
4638aef1 SH |
196 | } |
197 | ||
198 | static void netxen_nic_enable_int(struct netxen_adapter *adapter) | |
199 | { | |
200 | u32 mask; | |
443be796 | 201 | int port = adapter->portnum; |
4638aef1 SH |
202 | |
203 | DPRINTK(1, INFO, "Entered ISR Enable \n"); | |
204 | ||
205 | if (adapter->intr_scheme != -1 && | |
206 | adapter->intr_scheme != INTR_SCHEME_PERPORT) { | |
207 | switch (adapter->ahw.board_type) { | |
208 | case NETXEN_NIC_GBE: | |
209 | mask = 0x77b; | |
210 | break; | |
211 | case NETXEN_NIC_XGBE: | |
212 | mask = 0x77f; | |
213 | break; | |
214 | default: | |
215 | mask = 0x7ff; | |
216 | break; | |
217 | } | |
218 | ||
3ce06a32 | 219 | adapter->pci_write_immediate(adapter, ISR_INT_MASK, mask); |
4638aef1 SH |
220 | } |
221 | ||
3ce06a32 | 222 | adapter->pci_write_normalize(adapter, sw_int_mask[port], 0x1); |
4638aef1 | 223 | |
2956640d | 224 | if (!NETXEN_IS_MSI_FAMILY(adapter)) { |
4638aef1 SH |
225 | mask = 0xbff; |
226 | if (adapter->intr_scheme != -1 && | |
227 | adapter->intr_scheme != INTR_SCHEME_PERPORT) { | |
3ce06a32 DP |
228 | adapter->pci_write_normalize(adapter, |
229 | CRB_INT_VECTOR, 0); | |
4638aef1 | 230 | } |
3ce06a32 DP |
231 | adapter->pci_write_immediate(adapter, |
232 | ISR_INT_TARGET_MASK, mask); | |
4638aef1 SH |
233 | } |
234 | ||
235 | DPRINTK(1, INFO, "Done with enable Int\n"); | |
236 | } | |
237 | ||
2956640d DP |
238 | static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id) |
239 | { | |
240 | struct pci_dev *pdev = adapter->pdev; | |
241 | int err; | |
242 | uint64_t mask; | |
243 | ||
244 | #ifdef CONFIG_IA64 | |
245 | adapter->dma_mask = DMA_32BIT_MASK; | |
246 | #else | |
247 | if (revision_id >= NX_P3_B0) { | |
248 | /* should go to DMA_64BIT_MASK */ | |
249 | adapter->dma_mask = DMA_39BIT_MASK; | |
250 | mask = DMA_39BIT_MASK; | |
251 | } else if (revision_id == NX_P3_A2) { | |
252 | adapter->dma_mask = DMA_39BIT_MASK; | |
253 | mask = DMA_39BIT_MASK; | |
254 | } else if (revision_id == NX_P2_C1) { | |
255 | adapter->dma_mask = DMA_35BIT_MASK; | |
256 | mask = DMA_35BIT_MASK; | |
257 | } else { | |
258 | adapter->dma_mask = DMA_32BIT_MASK; | |
259 | mask = DMA_32BIT_MASK; | |
260 | goto set_32_bit_mask; | |
261 | } | |
262 | ||
263 | /* | |
264 | * Consistent DMA mask is set to 32 bit because it cannot be set to | |
265 | * 35 bits. For P3 also leave it at 32 bits for now. Only the rings | |
266 | * come off this pool. | |
267 | */ | |
268 | if (pci_set_dma_mask(pdev, mask) == 0 && | |
269 | pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) { | |
270 | adapter->pci_using_dac = 1; | |
271 | return 0; | |
272 | } | |
273 | #endif /* CONFIG_IA64 */ | |
274 | ||
275 | set_32_bit_mask: | |
276 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); | |
277 | if (!err) | |
278 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
279 | if (err) { | |
280 | DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err); | |
281 | return err; | |
282 | } | |
283 | ||
284 | adapter->pci_using_dac = 0; | |
285 | return 0; | |
286 | } | |
287 | ||
288 | static void netxen_check_options(struct netxen_adapter *adapter) | |
289 | { | |
290 | switch (adapter->ahw.boardcfg.board_type) { | |
291 | case NETXEN_BRDTYPE_P3_HMEZ: | |
292 | case NETXEN_BRDTYPE_P3_XG_LOM: | |
293 | case NETXEN_BRDTYPE_P3_10G_CX4: | |
294 | case NETXEN_BRDTYPE_P3_10G_CX4_LP: | |
295 | case NETXEN_BRDTYPE_P3_IMEZ: | |
296 | case NETXEN_BRDTYPE_P3_10G_SFP_PLUS: | |
297 | case NETXEN_BRDTYPE_P3_10G_XFP: | |
298 | case NETXEN_BRDTYPE_P3_10000_BASE_T: | |
299 | adapter->msix_supported = !!use_msi_x; | |
300 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G; | |
301 | break; | |
302 | ||
303 | case NETXEN_BRDTYPE_P2_SB31_10G: | |
304 | case NETXEN_BRDTYPE_P2_SB31_10G_CX4: | |
305 | case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ: | |
306 | case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ: | |
307 | adapter->msix_supported = 0; | |
308 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G; | |
309 | break; | |
310 | ||
311 | case NETXEN_BRDTYPE_P3_REF_QG: | |
312 | case NETXEN_BRDTYPE_P3_4_GB: | |
313 | case NETXEN_BRDTYPE_P3_4_GB_MM: | |
314 | case NETXEN_BRDTYPE_P2_SB35_4G: | |
315 | case NETXEN_BRDTYPE_P2_SB31_2G: | |
316 | adapter->msix_supported = 0; | |
317 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; | |
318 | break; | |
319 | ||
320 | default: | |
321 | adapter->msix_supported = 0; | |
322 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; | |
323 | ||
324 | printk(KERN_WARNING "Unknown board type(0x%x)\n", | |
325 | adapter->ahw.boardcfg.board_type); | |
326 | break; | |
327 | } | |
328 | ||
329 | adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST; | |
330 | adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; | |
331 | adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; | |
332 | ||
333 | adapter->max_possible_rss_rings = 1; | |
334 | return; | |
335 | } | |
336 | ||
337 | static int | |
338 | netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot) | |
339 | { | |
340 | int ret = 0; | |
341 | ||
342 | if (first_boot == 0x55555555) { | |
343 | /* This is the first boot after power up */ | |
344 | ||
345 | /* PCI bus master workaround */ | |
346 | adapter->hw_read_wx(adapter, | |
347 | NETXEN_PCIE_REG(0x4), &first_boot, 4); | |
348 | if (!(first_boot & 0x4)) { | |
349 | first_boot |= 0x4; | |
350 | adapter->hw_write_wx(adapter, | |
351 | NETXEN_PCIE_REG(0x4), &first_boot, 4); | |
352 | adapter->hw_read_wx(adapter, | |
353 | NETXEN_PCIE_REG(0x4), &first_boot, 4); | |
354 | } | |
355 | ||
356 | /* This is the first boot after power up */ | |
357 | adapter->hw_read_wx(adapter, | |
358 | NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4); | |
359 | if (first_boot != 0x80000f) { | |
360 | /* clear the register for future unloads/loads */ | |
361 | adapter->pci_write_normalize(adapter, | |
362 | NETXEN_CAM_RAM(0x1fc), 0); | |
363 | ret = -1; | |
364 | } | |
365 | ||
366 | if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) { | |
367 | /* Start P2 boot loader */ | |
368 | adapter->pci_write_normalize(adapter, | |
369 | NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC); | |
370 | adapter->pci_write_normalize(adapter, | |
371 | NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1); | |
372 | } | |
373 | } | |
374 | return ret; | |
375 | } | |
376 | ||
377 | static void netxen_set_port_mode(struct netxen_adapter *adapter) | |
378 | { | |
379 | u32 val, data; | |
380 | ||
381 | val = adapter->ahw.boardcfg.board_type; | |
382 | if ((val == NETXEN_BRDTYPE_P3_HMEZ) || | |
383 | (val == NETXEN_BRDTYPE_P3_XG_LOM)) { | |
384 | if (port_mode == NETXEN_PORT_MODE_802_3_AP) { | |
385 | data = NETXEN_PORT_MODE_802_3_AP; | |
386 | adapter->hw_write_wx(adapter, | |
387 | NETXEN_PORT_MODE_ADDR, &data, 4); | |
388 | } else if (port_mode == NETXEN_PORT_MODE_XG) { | |
389 | data = NETXEN_PORT_MODE_XG; | |
390 | adapter->hw_write_wx(adapter, | |
391 | NETXEN_PORT_MODE_ADDR, &data, 4); | |
392 | } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) { | |
393 | data = NETXEN_PORT_MODE_AUTO_NEG_1G; | |
394 | adapter->hw_write_wx(adapter, | |
395 | NETXEN_PORT_MODE_ADDR, &data, 4); | |
396 | } else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) { | |
397 | data = NETXEN_PORT_MODE_AUTO_NEG_XG; | |
398 | adapter->hw_write_wx(adapter, | |
399 | NETXEN_PORT_MODE_ADDR, &data, 4); | |
400 | } else { | |
401 | data = NETXEN_PORT_MODE_AUTO_NEG; | |
402 | adapter->hw_write_wx(adapter, | |
403 | NETXEN_PORT_MODE_ADDR, &data, 4); | |
404 | } | |
405 | ||
406 | if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) && | |
407 | (wol_port_mode != NETXEN_PORT_MODE_XG) && | |
408 | (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) && | |
409 | (wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) { | |
410 | wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG; | |
411 | } | |
412 | adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE, | |
413 | &wol_port_mode, 4); | |
414 | } | |
415 | } | |
416 | ||
417 | #define PCI_CAP_ID_GEN 0x10 | |
418 | ||
419 | static void netxen_pcie_strap_init(struct netxen_adapter *adapter) | |
420 | { | |
421 | u32 pdevfuncsave; | |
422 | u32 c8c9value = 0; | |
423 | u32 chicken = 0; | |
424 | u32 control = 0; | |
425 | int i, pos; | |
426 | struct pci_dev *pdev; | |
427 | ||
428 | pdev = pci_get_device(0x1166, 0x0140, NULL); | |
429 | if (pdev) { | |
430 | pci_dev_put(pdev); | |
431 | adapter->hw_read_wx(adapter, | |
432 | NETXEN_PCIE_REG(PCIE_TGT_SPLIT_CHICKEN), &chicken, 4); | |
433 | chicken |= 0x4000; | |
434 | adapter->hw_write_wx(adapter, | |
435 | NETXEN_PCIE_REG(PCIE_TGT_SPLIT_CHICKEN), &chicken, 4); | |
436 | } | |
437 | ||
438 | pdev = adapter->pdev; | |
439 | ||
440 | adapter->hw_read_wx(adapter, | |
441 | NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4); | |
442 | /* clear chicken3.25:24 */ | |
443 | chicken &= 0xFCFFFFFF; | |
444 | /* | |
445 | * if gen1 and B0, set F1020 - if gen 2, do nothing | |
446 | * if gen2 set to F1000 | |
447 | */ | |
448 | pos = pci_find_capability(pdev, PCI_CAP_ID_GEN); | |
449 | if (pos == 0xC0) { | |
450 | pci_read_config_dword(pdev, pos + 0x10, &control); | |
451 | if ((control & 0x000F0000) != 0x00020000) { | |
452 | /* set chicken3.24 if gen1 */ | |
453 | chicken |= 0x01000000; | |
454 | } | |
455 | printk(KERN_INFO "%s Gen2 strapping detected\n", | |
456 | netxen_nic_driver_name); | |
457 | c8c9value = 0xF1000; | |
458 | } else { | |
459 | /* set chicken3.24 if gen1 */ | |
460 | chicken |= 0x01000000; | |
461 | printk(KERN_INFO "%s Gen1 strapping detected\n", | |
462 | netxen_nic_driver_name); | |
463 | if (adapter->ahw.revision_id == NX_P3_B0) | |
464 | c8c9value = 0xF1020; | |
465 | else | |
466 | c8c9value = 0; | |
467 | ||
468 | } | |
469 | adapter->hw_write_wx(adapter, | |
470 | NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4); | |
471 | ||
472 | if (!c8c9value) | |
473 | return; | |
474 | ||
475 | pdevfuncsave = pdev->devfn; | |
476 | if (pdevfuncsave & 0x07) | |
477 | return; | |
478 | ||
479 | for (i = 0; i < 8; i++) { | |
480 | pci_read_config_dword(pdev, pos + 8, &control); | |
481 | pci_read_config_dword(pdev, pos + 8, &control); | |
482 | pci_write_config_dword(pdev, pos + 8, c8c9value); | |
483 | pdev->devfn++; | |
484 | } | |
485 | pdev->devfn = pdevfuncsave; | |
486 | } | |
487 | ||
488 | static void netxen_set_msix_bit(struct pci_dev *pdev, int enable) | |
489 | { | |
490 | u32 control; | |
491 | int pos; | |
492 | ||
493 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
494 | if (pos) { | |
495 | pci_read_config_dword(pdev, pos, &control); | |
496 | if (enable) | |
497 | control |= PCI_MSIX_FLAGS_ENABLE; | |
498 | else | |
499 | control = 0; | |
500 | pci_write_config_dword(pdev, pos, control); | |
501 | } | |
502 | } | |
503 | ||
504 | static void netxen_init_msix_entries(struct netxen_adapter *adapter) | |
505 | { | |
506 | int i; | |
507 | ||
508 | for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++) | |
509 | adapter->msix_entries[i].entry = i; | |
510 | } | |
511 | ||
3d396eb1 AK |
512 | /* |
513 | * netxen_nic_probe() | |
514 | * | |
515 | * The Linux system will invoke this after identifying the vendor ID and | |
516 | * device Id in the pci_tbl supported by this module. | |
517 | * | |
518 | * A quad port card has one operational PCI config space, (function 0), | |
519 | * which is used to access all four ports. | |
520 | * | |
521 | * This routine will initialize the adapter, and setup the global parameters | |
522 | * along with the port's specific structure. | |
523 | */ | |
524 | static int __devinit | |
525 | netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
526 | { | |
527 | struct net_device *netdev = NULL; | |
528 | struct netxen_adapter *adapter = NULL; | |
ed25ffa1 AK |
529 | void __iomem *mem_ptr0 = NULL; |
530 | void __iomem *mem_ptr1 = NULL; | |
531 | void __iomem *mem_ptr2 = NULL; | |
6c80b18d MT |
532 | unsigned long first_page_group_end; |
533 | unsigned long first_page_group_start; | |
534 | ||
cb8011ad | 535 | |
a608ab9c | 536 | u8 __iomem *db_ptr = NULL; |
2956640d DP |
537 | unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0; |
538 | int i = 0, err; | |
539 | int first_driver, first_boot; | |
f305f789 | 540 | __le64 mac_addr[FLASH_NUM_PORTS + 1]; |
6c80b18d | 541 | u32 val; |
3176ff3e | 542 | int pci_func_id = PCI_FUNC(pdev->devfn); |
0795af57 | 543 | DECLARE_MAC_BUF(mac); |
2956640d DP |
544 | struct netxen_legacy_intr_set *legacy_intrp; |
545 | uint8_t revision_id; | |
3d396eb1 | 546 | |
dcd56fdb | 547 | if (pci_func_id == 0) |
2956640d | 548 | printk(KERN_INFO "%s\n", netxen_nic_driver_string); |
6c80b18d | 549 | |
3176ff3e | 550 | if (pdev->class != 0x020000) { |
dcd56fdb | 551 | printk(KERN_DEBUG "NetXen function %d, class %x will not " |
3176ff3e | 552 | "be enabled.\n",pci_func_id, pdev->class); |
ed25ffa1 AK |
553 | return -ENODEV; |
554 | } | |
2956640d | 555 | |
3d396eb1 AK |
556 | if ((err = pci_enable_device(pdev))) |
557 | return err; | |
2956640d | 558 | |
3d396eb1 AK |
559 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { |
560 | err = -ENODEV; | |
561 | goto err_out_disable_pdev; | |
562 | } | |
563 | ||
564 | if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) | |
565 | goto err_out_disable_pdev; | |
566 | ||
567 | pci_set_master(pdev); | |
3176ff3e MT |
568 | |
569 | netdev = alloc_etherdev(sizeof(struct netxen_adapter)); | |
570 | if(!netdev) { | |
571 | printk(KERN_ERR"%s: Failed to allocate memory for the " | |
572 | "device block.Check system memory resource" | |
573 | " usage.\n", netxen_nic_driver_name); | |
574 | goto err_out_free_res; | |
575 | } | |
576 | ||
3176ff3e MT |
577 | SET_NETDEV_DEV(netdev, &pdev->dev); |
578 | ||
579 | adapter = netdev->priv; | |
2956640d DP |
580 | adapter->netdev = netdev; |
581 | adapter->pdev = pdev; | |
13ba9c77 | 582 | adapter->ahw.pci_func = pci_func_id; |
2956640d DP |
583 | |
584 | revision_id = pdev->revision; | |
585 | adapter->ahw.revision_id = revision_id; | |
586 | ||
587 | err = nx_set_dma_mask(adapter, revision_id); | |
588 | if (err) | |
589 | goto err_out_free_netdev; | |
590 | ||
3ce06a32 DP |
591 | rwlock_init(&adapter->adapter_lock); |
592 | adapter->ahw.qdr_sn_window = -1; | |
593 | adapter->ahw.ddr_mn_window = -1; | |
13ba9c77 | 594 | |
3d396eb1 AK |
595 | /* remap phys address */ |
596 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
597 | mem_len = pci_resource_len(pdev, 0); | |
3ce06a32 DP |
598 | pci_len0 = 0; |
599 | ||
600 | adapter->hw_write_wx = netxen_nic_hw_write_wx_128M; | |
601 | adapter->hw_read_wx = netxen_nic_hw_read_wx_128M; | |
602 | adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M; | |
603 | adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M; | |
604 | adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M; | |
605 | adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M; | |
606 | adapter->pci_set_window = netxen_nic_pci_set_window_128M; | |
607 | adapter->pci_mem_read = netxen_nic_pci_mem_read_128M; | |
608 | adapter->pci_mem_write = netxen_nic_pci_mem_write_128M; | |
3d396eb1 AK |
609 | |
610 | /* 128 Meg of memory */ | |
6c80b18d MT |
611 | if (mem_len == NETXEN_PCI_128MB_SIZE) { |
612 | mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); | |
613 | mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START, | |
614 | SECOND_PAGE_GROUP_SIZE); | |
615 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START, | |
616 | THIRD_PAGE_GROUP_SIZE); | |
617 | first_page_group_start = FIRST_PAGE_GROUP_START; | |
618 | first_page_group_end = FIRST_PAGE_GROUP_END; | |
619 | } else if (mem_len == NETXEN_PCI_32MB_SIZE) { | |
620 | mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE); | |
621 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START - | |
622 | SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); | |
623 | first_page_group_start = 0; | |
624 | first_page_group_end = 0; | |
3ce06a32 DP |
625 | } else if (mem_len == NETXEN_PCI_2MB_SIZE) { |
626 | adapter->hw_write_wx = netxen_nic_hw_write_wx_2M; | |
627 | adapter->hw_read_wx = netxen_nic_hw_read_wx_2M; | |
628 | adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M; | |
629 | adapter->pci_write_immediate = | |
630 | netxen_nic_pci_write_immediate_2M; | |
631 | adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M; | |
632 | adapter->pci_write_normalize = | |
633 | netxen_nic_pci_write_normalize_2M; | |
634 | adapter->pci_set_window = netxen_nic_pci_set_window_2M; | |
635 | adapter->pci_mem_read = netxen_nic_pci_mem_read_2M; | |
636 | adapter->pci_mem_write = netxen_nic_pci_mem_write_2M; | |
637 | ||
638 | mem_ptr0 = ioremap(mem_base, mem_len); | |
639 | pci_len0 = mem_len; | |
640 | first_page_group_start = 0; | |
641 | first_page_group_end = 0; | |
642 | ||
643 | adapter->ahw.ddr_mn_window = 0; | |
644 | adapter->ahw.qdr_sn_window = 0; | |
645 | ||
646 | adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW + | |
647 | (pci_func_id * 0x20); | |
648 | adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW; | |
649 | if (pci_func_id < 4) | |
650 | adapter->ahw.ms_win_crb += (pci_func_id * 0x20); | |
651 | else | |
652 | adapter->ahw.ms_win_crb += | |
653 | 0xA0 + ((pci_func_id - 4) * 0x10); | |
6c80b18d | 654 | } else { |
4790654c | 655 | err = -EIO; |
6c80b18d MT |
656 | goto err_out_free_netdev; |
657 | } | |
cb8011ad | 658 | |
3ce06a32 | 659 | dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20)); |
cb8011ad | 660 | |
ed25ffa1 AK |
661 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ |
662 | db_len = pci_resource_len(pdev, 4); | |
663 | ||
664 | if (db_len == 0) { | |
665 | printk(KERN_ERR "%s: doorbell is disabled\n", | |
2956640d | 666 | netxen_nic_driver_name); |
ed25ffa1 AK |
667 | err = -EIO; |
668 | goto err_out_iounmap; | |
669 | } | |
670 | DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base, | |
671 | db_len); | |
672 | ||
673 | db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); | |
a608ab9c | 674 | if (!db_ptr) { |
ed25ffa1 | 675 | printk(KERN_ERR "%s: Failed to allocate doorbell map.", |
2956640d | 676 | netxen_nic_driver_name); |
ed25ffa1 AK |
677 | err = -EIO; |
678 | goto err_out_iounmap; | |
3d396eb1 | 679 | } |
ed25ffa1 | 680 | DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr); |
3d396eb1 | 681 | |
6c80b18d | 682 | adapter->ahw.pci_base0 = mem_ptr0; |
3ce06a32 | 683 | adapter->ahw.pci_len0 = pci_len0; |
6c80b18d MT |
684 | adapter->ahw.first_page_group_start = first_page_group_start; |
685 | adapter->ahw.first_page_group_end = first_page_group_end; | |
686 | adapter->ahw.pci_base1 = mem_ptr1; | |
687 | adapter->ahw.pci_base2 = mem_ptr2; | |
688 | adapter->ahw.db_base = db_ptr; | |
689 | adapter->ahw.db_len = db_len; | |
3d396eb1 | 690 | |
bea3348e | 691 | netif_napi_add(netdev, &adapter->napi, |
2956640d DP |
692 | netxen_nic_poll, NETXEN_NETDEV_WEIGHT); |
693 | ||
694 | if (revision_id >= NX_P3_B0) | |
695 | legacy_intrp = &legacy_intr[pci_func_id]; | |
696 | else | |
697 | legacy_intrp = &legacy_intr[0]; | |
698 | ||
699 | adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit; | |
700 | adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg; | |
701 | adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg; | |
702 | adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg; | |
bea3348e | 703 | |
2d1a3bbd | 704 | /* this will be read from FW later */ |
705 | adapter->intr_scheme = -1; | |
443be796 | 706 | adapter->msi_mode = -1; |
2d1a3bbd | 707 | |
708 | /* This will be reset for mezz cards */ | |
3176ff3e | 709 | adapter->portnum = pci_func_id; |
2d1a3bbd | 710 | adapter->status &= ~NETXEN_NETDEV_STATUS; |
200eef20 | 711 | adapter->rx_csum = 1; |
623621b0 | 712 | adapter->mc_enabled = 0; |
2956640d DP |
713 | if (NX_IS_REVISION_P3(revision_id)) |
714 | adapter->max_mc_count = 38; | |
715 | else | |
716 | adapter->max_mc_count = 16; | |
3176ff3e MT |
717 | |
718 | netdev->open = netxen_nic_open; | |
719 | netdev->stop = netxen_nic_close; | |
720 | netdev->hard_start_xmit = netxen_nic_xmit_frame; | |
4790654c | 721 | netdev->get_stats = netxen_nic_get_stats; |
3176ff3e MT |
722 | netdev->set_multicast_list = netxen_nic_set_multi; |
723 | netdev->set_mac_address = netxen_nic_set_mac; | |
724 | netdev->change_mtu = netxen_nic_change_mtu; | |
725 | netdev->tx_timeout = netxen_tx_timeout; | |
05aaa02d | 726 | netdev->watchdog_timeo = 2*HZ; |
3176ff3e MT |
727 | |
728 | netxen_nic_change_mtu(netdev, netdev->mtu); | |
729 | ||
730 | SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); | |
3176ff3e MT |
731 | #ifdef CONFIG_NET_POLL_CONTROLLER |
732 | netdev->poll_controller = netxen_nic_poll_controller; | |
733 | #endif | |
734 | /* ScatterGather support */ | |
735 | netdev->features = NETIF_F_SG; | |
736 | netdev->features |= NETIF_F_IP_CSUM; | |
737 | netdev->features |= NETIF_F_TSO; | |
2956640d DP |
738 | if (NX_IS_REVISION_P3(revision_id)) |
739 | netdev->features |= NETIF_F_TSO6; | |
3176ff3e | 740 | |
2956640d | 741 | if (adapter->pci_using_dac) |
3176ff3e MT |
742 | netdev->features |= NETIF_F_HIGHDMA; |
743 | ||
6c80b18d MT |
744 | /* |
745 | * Set the CRB window to invalid. If any register in window 0 is | |
746 | * accessed it should set the window to 0 and then reset it to 1. | |
747 | */ | |
748 | adapter->curr_window = 255; | |
749 | ||
dcd56fdb DP |
750 | if (netxen_nic_get_board_info(adapter) != 0) { |
751 | printk("%s: Error getting board config info.\n", | |
2956640d | 752 | netxen_nic_driver_name); |
dcd56fdb DP |
753 | err = -EIO; |
754 | goto err_out_iounmap; | |
755 | } | |
6c80b18d | 756 | |
6c80b18d MT |
757 | netxen_initialize_adapter_ops(adapter); |
758 | ||
13ba9c77 | 759 | /* Mezz cards have PCI function 0,2,3 enabled */ |
dc515f2e DP |
760 | switch (adapter->ahw.boardcfg.board_type) { |
761 | case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ: | |
762 | case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ: | |
763 | if (pci_func_id >= 2) | |
13ba9c77 | 764 | adapter->portnum = pci_func_id - 2; |
dc515f2e DP |
765 | break; |
766 | default: | |
767 | break; | |
768 | } | |
13ba9c77 | 769 | |
2956640d DP |
770 | /* |
771 | * This call will setup various max rx/tx counts. | |
772 | * It must be done before any buffer/ring allocations. | |
773 | */ | |
774 | netxen_check_options(adapter); | |
3d396eb1 | 775 | |
2956640d DP |
776 | first_driver = 0; |
777 | if (NX_IS_REVISION_P3(revision_id)) { | |
778 | if (adapter->ahw.pci_func == 0) | |
779 | first_driver = 1; | |
780 | } else { | |
781 | if (adapter->portnum == 0) | |
782 | first_driver = 1; | |
783 | } | |
7830b22c DP |
784 | adapter->crb_addr_cmd_producer = crb_cmd_producer[adapter->portnum]; |
785 | adapter->crb_addr_cmd_consumer = crb_cmd_consumer[adapter->portnum]; | |
3176ff3e MT |
786 | netxen_nic_update_cmd_producer(adapter, 0); |
787 | netxen_nic_update_cmd_consumer(adapter, 0); | |
3d396eb1 | 788 | |
2956640d DP |
789 | if (first_driver) { |
790 | first_boot = adapter->pci_read_normalize(adapter, | |
791 | NETXEN_CAM_RAM(0x1fc)); | |
3176ff3e | 792 | |
2956640d DP |
793 | err = netxen_check_hw_init(adapter, first_boot); |
794 | if (err) { | |
795 | printk(KERN_ERR "%s: error in init HW init sequence\n", | |
796 | netxen_nic_driver_name); | |
797 | goto err_out_iounmap; | |
3176ff3e | 798 | } |
3176ff3e | 799 | |
2956640d DP |
800 | if (NX_IS_REVISION_P3(revision_id)) |
801 | netxen_set_port_mode(adapter); | |
802 | ||
803 | if (first_boot != 0x55555555) { | |
3ce06a32 DP |
804 | adapter->pci_write_normalize(adapter, |
805 | CRB_CMDPEG_STATE, 0); | |
439b454e DP |
806 | netxen_pinit_from_rom(adapter, 0); |
807 | msleep(1); | |
808 | netxen_load_firmware(adapter); | |
2956640d DP |
809 | } |
810 | ||
811 | if (NX_IS_REVISION_P3(revision_id)) | |
812 | netxen_pcie_strap_init(adapter); | |
813 | ||
814 | if (NX_IS_REVISION_P2(revision_id)) { | |
623621b0 DP |
815 | |
816 | /* Initialize multicast addr pool owners */ | |
817 | val = 0x7654; | |
818 | if (adapter->ahw.board_type == NETXEN_NIC_XGBE) | |
819 | val |= 0x0f000000; | |
820 | netxen_crb_writelit_adapter(adapter, | |
821 | NETXEN_MAC_ADDR_CNTL_REG, val); | |
822 | ||
6c80b18d | 823 | } |
96acb6eb | 824 | |
2956640d DP |
825 | if ((first_boot == 0x55555555) && |
826 | (NX_IS_REVISION_P2(revision_id))) { | |
827 | /* Unlock the HW, prompting the boot sequence */ | |
828 | adapter->pci_write_normalize(adapter, | |
829 | NETXEN_ROMUSB_GLB_PEGTUNE_DONE, 1); | |
830 | } | |
831 | ||
832 | err = netxen_initialize_adapter_offload(adapter); | |
833 | if (err) | |
834 | goto err_out_iounmap; | |
6c80b18d MT |
835 | |
836 | /* | |
837 | * Tell the hardware our version number. | |
838 | */ | |
4790654c | 839 | i = (_NETXEN_NIC_LINUX_MAJOR << 16) |
6c80b18d MT |
840 | | ((_NETXEN_NIC_LINUX_MINOR << 8)) |
841 | | (_NETXEN_NIC_LINUX_SUBVERSION); | |
3ce06a32 | 842 | adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i); |
3d396eb1 | 843 | |
3176ff3e MT |
844 | /* Handshake with the card before we register the devices. */ |
845 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
2956640d DP |
846 | |
847 | if (NX_IS_REVISION_P3(revision_id)) { | |
848 | adapter->hw_read_wx(adapter, | |
849 | NETXEN_MIU_MN_CONTROL, &val, 4); | |
850 | adapter->ahw.cut_through = (val & 0x4) ? 1 : 0; | |
851 | dev_info(&pdev->dev, "firmware running in %s mode\n", | |
852 | adapter->ahw.cut_through ? "cut through" : "legacy"); | |
853 | } | |
854 | } /* first_driver */ | |
855 | ||
856 | netxen_nic_flash_print(adapter); | |
3d396eb1 | 857 | |
3d396eb1 | 858 | /* |
6c80b18d | 859 | * See if the firmware gave us a virtual-physical port mapping. |
3d396eb1 | 860 | */ |
dcd56fdb | 861 | adapter->physical_port = adapter->portnum; |
3ce06a32 | 862 | i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum)); |
6c80b18d | 863 | if (i != 0x55555555) |
3276fbad | 864 | adapter->physical_port = i; |
6c80b18d | 865 | |
2956640d DP |
866 | adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED); |
867 | ||
868 | netxen_set_msix_bit(pdev, 0); | |
869 | ||
870 | if (NX_IS_REVISION_P3(revision_id)) { | |
871 | if ((mem_len != NETXEN_PCI_128MB_SIZE) && | |
872 | mem_len != NETXEN_PCI_2MB_SIZE) | |
873 | adapter->msix_supported = 0; | |
874 | } | |
875 | ||
876 | if (adapter->msix_supported) { | |
877 | ||
878 | netxen_init_msix_entries(adapter); | |
879 | ||
880 | if (pci_enable_msix(pdev, adapter->msix_entries, | |
881 | MSIX_ENTRIES_PER_ADAPTER)) | |
882 | goto request_msi; | |
883 | ||
884 | adapter->flags |= NETXEN_NIC_MSIX_ENABLED; | |
885 | netxen_set_msix_bit(pdev, 1); | |
886 | dev_info(&pdev->dev, "using msi-x interrupts\n"); | |
887 | ||
888 | } else { | |
889 | request_msi: | |
890 | if (use_msi && !pci_enable_msi(pdev)) { | |
891 | adapter->flags |= NETXEN_NIC_MSI_ENABLED; | |
892 | dev_info(&pdev->dev, "using msi interrupts\n"); | |
893 | } else | |
894 | dev_info(&pdev->dev, "using legacy interrupts\n"); | |
895 | } | |
896 | ||
897 | if (adapter->flags & NETXEN_NIC_MSIX_ENABLED) | |
898 | netdev->irq = adapter->msix_entries[0].vector; | |
899 | else | |
900 | netdev->irq = pdev->irq; | |
901 | ||
902 | err = netxen_receive_peg_ready(adapter); | |
903 | if (err) | |
904 | goto err_out_disable_msi; | |
905 | ||
906 | init_timer(&adapter->watchdog_timer); | |
907 | adapter->ahw.xg_linkup = 0; | |
908 | adapter->watchdog_timer.function = &netxen_watchdog; | |
909 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
910 | INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task); | |
911 | INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task); | |
912 | ||
913 | if (netxen_is_flash_supported(adapter) == 0 && | |
914 | netxen_get_flash_mac_addr(adapter, mac_addr) == 0) { | |
915 | unsigned char *p; | |
916 | ||
917 | p = (unsigned char *)&mac_addr[adapter->portnum]; | |
918 | netdev->dev_addr[0] = *(p + 5); | |
919 | netdev->dev_addr[1] = *(p + 4); | |
920 | netdev->dev_addr[2] = *(p + 3); | |
921 | netdev->dev_addr[3] = *(p + 2); | |
922 | netdev->dev_addr[4] = *(p + 1); | |
923 | netdev->dev_addr[5] = *(p + 0); | |
924 | ||
925 | memcpy(netdev->perm_addr, netdev->dev_addr, | |
926 | netdev->addr_len); | |
927 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
928 | printk(KERN_ERR "%s: Bad MAC address %s.\n", | |
929 | netxen_nic_driver_name, | |
930 | print_mac(mac, netdev->dev_addr)); | |
931 | } else { | |
932 | adapter->macaddr_set(adapter, netdev->dev_addr); | |
933 | } | |
934 | } | |
935 | ||
3176ff3e MT |
936 | netif_carrier_off(netdev); |
937 | netif_stop_queue(netdev); | |
938 | ||
6c80b18d MT |
939 | if ((err = register_netdev(netdev))) { |
940 | printk(KERN_ERR "%s: register_netdev failed port #%d" | |
941 | " aborting\n", netxen_nic_driver_name, | |
942 | adapter->portnum); | |
943 | err = -EIO; | |
2956640d | 944 | goto err_out_disable_msi; |
6c80b18d MT |
945 | } |
946 | ||
947 | pci_set_drvdata(pdev, adapter); | |
3d396eb1 | 948 | |
2956640d DP |
949 | switch (adapter->ahw.board_type) { |
950 | case NETXEN_NIC_GBE: | |
951 | dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n", | |
952 | adapter->netdev->name); | |
953 | break; | |
954 | case NETXEN_NIC_XGBE: | |
955 | dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n", | |
956 | adapter->netdev->name); | |
957 | break; | |
3d396eb1 | 958 | } |
3d396eb1 | 959 | |
2956640d DP |
960 | return 0; |
961 | ||
962 | err_out_disable_msi: | |
963 | if (adapter->flags & NETXEN_NIC_MSIX_ENABLED) | |
964 | pci_disable_msix(pdev); | |
6c80b18d MT |
965 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) |
966 | pci_disable_msi(pdev); | |
967 | ||
2956640d DP |
968 | if (first_driver) |
969 | netxen_free_adapter_offload(adapter); | |
3d396eb1 | 970 | |
2956640d | 971 | err_out_iounmap: |
ed25ffa1 AK |
972 | if (db_ptr) |
973 | iounmap(db_ptr); | |
974 | ||
ed25ffa1 AK |
975 | if (mem_ptr0) |
976 | iounmap(mem_ptr0); | |
977 | if (mem_ptr1) | |
978 | iounmap(mem_ptr1); | |
979 | if (mem_ptr2) | |
980 | iounmap(mem_ptr2); | |
cb8011ad | 981 | |
6c80b18d MT |
982 | err_out_free_netdev: |
983 | free_netdev(netdev); | |
984 | ||
985 | err_out_free_res: | |
3d396eb1 | 986 | pci_release_regions(pdev); |
6c80b18d MT |
987 | |
988 | err_out_disable_pdev: | |
2956640d | 989 | pci_set_drvdata(pdev, NULL); |
3d396eb1 AK |
990 | pci_disable_device(pdev); |
991 | return err; | |
992 | } | |
993 | ||
994 | static void __devexit netxen_nic_remove(struct pci_dev *pdev) | |
995 | { | |
996 | struct netxen_adapter *adapter; | |
3176ff3e | 997 | struct net_device *netdev; |
3d396eb1 | 998 | |
6c80b18d | 999 | adapter = pci_get_drvdata(pdev); |
3d396eb1 AK |
1000 | if (adapter == NULL) |
1001 | return; | |
1002 | ||
6c80b18d MT |
1003 | netdev = adapter->netdev; |
1004 | ||
96acb6eb DP |
1005 | unregister_netdev(netdev); |
1006 | ||
96acb6eb | 1007 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
3d396eb1 | 1008 | netxen_free_hw_resources(adapter); |
2956640d | 1009 | netxen_free_sw_resources(adapter); |
96acb6eb | 1010 | } |
3d396eb1 | 1011 | |
439b454e DP |
1012 | if (adapter->portnum == 0) |
1013 | netxen_free_adapter_offload(adapter); | |
96acb6eb | 1014 | |
3052246c | 1015 | if (adapter->irq) |
1016 | free_irq(adapter->irq, adapter); | |
1017 | ||
2956640d DP |
1018 | if (adapter->flags & NETXEN_NIC_MSIX_ENABLED) |
1019 | pci_disable_msix(pdev); | |
3052246c | 1020 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) |
1021 | pci_disable_msi(pdev); | |
1022 | ||
6c80b18d MT |
1023 | iounmap(adapter->ahw.db_base); |
1024 | iounmap(adapter->ahw.pci_base0); | |
1025 | iounmap(adapter->ahw.pci_base1); | |
1026 | iounmap(adapter->ahw.pci_base2); | |
595e3fb8 MT |
1027 | |
1028 | pci_release_regions(pdev); | |
3052246c | 1029 | pci_disable_device(pdev); |
595e3fb8 MT |
1030 | pci_set_drvdata(pdev, NULL); |
1031 | ||
6c80b18d | 1032 | free_netdev(netdev); |
3d396eb1 AK |
1033 | } |
1034 | ||
1035 | /* | |
1036 | * Called when a network interface is made active | |
1037 | * @returns 0 on success, negative value on failure | |
1038 | */ | |
1039 | static int netxen_nic_open(struct net_device *netdev) | |
1040 | { | |
3176ff3e | 1041 | struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv; |
3d396eb1 AK |
1042 | int err = 0; |
1043 | int ctx, ring; | |
05aaa02d DP |
1044 | irq_handler_t handler; |
1045 | unsigned long flags = IRQF_SAMPLE_RANDOM; | |
3d396eb1 | 1046 | |
dcd56fdb DP |
1047 | if (adapter->driver_mismatch) |
1048 | return -EIO; | |
1049 | ||
3d396eb1 AK |
1050 | if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { |
1051 | err = netxen_init_firmware(adapter); | |
1052 | if (err != 0) { | |
1053 | printk(KERN_ERR "Failed to init firmware\n"); | |
1054 | return -EIO; | |
1055 | } | |
3d396eb1 | 1056 | |
2956640d | 1057 | err = netxen_alloc_sw_resources(adapter); |
3d396eb1 | 1058 | if (err) { |
2956640d DP |
1059 | printk(KERN_ERR "%s: Error in setting sw resources\n", |
1060 | netdev->name); | |
3d396eb1 AK |
1061 | return err; |
1062 | } | |
2956640d DP |
1063 | |
1064 | netxen_nic_clear_stats(adapter); | |
1065 | ||
1066 | err = netxen_alloc_hw_resources(adapter); | |
1067 | if (err) { | |
1068 | printk(KERN_ERR "%s: Error in setting hw resources\n", | |
1069 | netdev->name); | |
1070 | goto err_out_free_sw; | |
1071 | } | |
1072 | ||
1073 | if (adapter->fw_major < 4) { | |
1074 | adapter->crb_addr_cmd_producer = | |
1075 | crb_cmd_producer[adapter->portnum]; | |
1076 | adapter->crb_addr_cmd_consumer = | |
1077 | crb_cmd_consumer[adapter->portnum]; | |
1078 | } | |
1079 | ||
1080 | netxen_nic_update_cmd_producer(adapter, 0); | |
1081 | netxen_nic_update_cmd_consumer(adapter, 0); | |
1082 | ||
3d396eb1 | 1083 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
cb8011ad | 1084 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) |
3d396eb1 | 1085 | netxen_post_rx_buffers(adapter, ctx, ring); |
3d396eb1 | 1086 | } |
2956640d | 1087 | if (NETXEN_IS_MSI_FAMILY(adapter)) |
05aaa02d DP |
1088 | handler = netxen_msi_intr; |
1089 | else { | |
1090 | flags |= IRQF_SHARED; | |
1091 | handler = netxen_intr; | |
1092 | } | |
2956640d | 1093 | adapter->irq = netdev->irq; |
05aaa02d DP |
1094 | err = request_irq(adapter->irq, handler, |
1095 | flags, netdev->name, adapter); | |
3d396eb1 AK |
1096 | if (err) { |
1097 | printk(KERN_ERR "request_irq failed with: %d\n", err); | |
2956640d | 1098 | goto err_out_free_hw; |
3d396eb1 | 1099 | } |
ed25ffa1 AK |
1100 | |
1101 | adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; | |
1102 | } | |
2956640d | 1103 | |
3d396eb1 AK |
1104 | /* Done here again so that even if phantom sw overwrote it, |
1105 | * we set it */ | |
2956640d DP |
1106 | err = adapter->init_port(adapter, adapter->portnum); |
1107 | if (err) { | |
595e3fb8 MT |
1108 | printk(KERN_ERR "%s: Failed to initialize port %d\n", |
1109 | netxen_nic_driver_name, adapter->portnum); | |
2956640d | 1110 | goto err_out_free_irq; |
595e3fb8 | 1111 | } |
2956640d | 1112 | adapter->macaddr_set(adapter, netdev->dev_addr); |
595e3fb8 | 1113 | |
3176ff3e | 1114 | netxen_nic_set_link_parameters(adapter); |
3d396eb1 AK |
1115 | |
1116 | netxen_nic_set_multi(netdev); | |
2956640d | 1117 | adapter->set_mtu(adapter, netdev->mtu); |
ed25ffa1 | 1118 | |
dcd56fdb | 1119 | mod_timer(&adapter->watchdog_timer, jiffies); |
05aaa02d DP |
1120 | |
1121 | napi_enable(&adapter->napi); | |
1122 | netxen_nic_enable_int(adapter); | |
1123 | ||
dcd56fdb | 1124 | netif_start_queue(netdev); |
3d396eb1 AK |
1125 | |
1126 | return 0; | |
2956640d DP |
1127 | |
1128 | err_out_free_irq: | |
1129 | free_irq(adapter->irq, adapter); | |
1130 | err_out_free_hw: | |
1131 | netxen_free_hw_resources(adapter); | |
1132 | err_out_free_sw: | |
1133 | netxen_free_sw_resources(adapter); | |
1134 | return err; | |
3d396eb1 AK |
1135 | } |
1136 | ||
1137 | /* | |
1138 | * netxen_nic_close - Disables a network interface entry point | |
1139 | */ | |
1140 | static int netxen_nic_close(struct net_device *netdev) | |
1141 | { | |
3176ff3e | 1142 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
1143 | |
1144 | netif_carrier_off(netdev); | |
1145 | netif_stop_queue(netdev); | |
bea3348e | 1146 | napi_disable(&adapter->napi); |
3d396eb1 | 1147 | |
72b0a7a8 | 1148 | if (adapter->stop_port) |
1149 | adapter->stop_port(adapter); | |
1150 | ||
e01872af | 1151 | netxen_nic_disable_int(adapter); |
1152 | ||
2956640d DP |
1153 | netxen_release_tx_buffers(adapter); |
1154 | ||
96acb6eb DP |
1155 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
1156 | FLUSH_SCHEDULED_WORK(); | |
1157 | del_timer_sync(&adapter->watchdog_timer); | |
1158 | } | |
3d396eb1 AK |
1159 | |
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1164 | { | |
3176ff3e | 1165 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
1166 | struct netxen_hardware_context *hw = &adapter->ahw; |
1167 | unsigned int first_seg_len = skb->len - skb->data_len; | |
1168 | struct netxen_skb_frag *buffrag; | |
1169 | unsigned int i; | |
1170 | ||
ba53e6b4 | 1171 | u32 producer, consumer; |
3d396eb1 AK |
1172 | u32 saved_producer = 0; |
1173 | struct cmd_desc_type0 *hwdesc; | |
1174 | int k; | |
1175 | struct netxen_cmd_buffer *pbuf = NULL; | |
3d396eb1 | 1176 | int frag_count; |
3d396eb1 | 1177 | int no_of_desc; |
ba53e6b4 | 1178 | u32 num_txd = adapter->max_tx_desc_count; |
3d396eb1 | 1179 | |
3d396eb1 AK |
1180 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
1181 | ||
3d396eb1 AK |
1182 | /* There 4 fragments per descriptor */ |
1183 | no_of_desc = (frag_count + 3) >> 2; | |
cb8011ad AK |
1184 | if (netdev->features & NETIF_F_TSO) { |
1185 | if (skb_shinfo(skb)->gso_size > 0) { | |
1186 | ||
3d396eb1 | 1187 | no_of_desc++; |
ab6a5bb6 | 1188 | if ((ip_hdrlen(skb) + tcp_hdrlen(skb) + |
c9bdd4b5 | 1189 | sizeof(struct ethhdr)) > |
ed25ffa1 | 1190 | (sizeof(struct cmd_desc_type0) - 2)) { |
cb8011ad AK |
1191 | no_of_desc++; |
1192 | } | |
3d396eb1 AK |
1193 | } |
1194 | } | |
53a01e00 | 1195 | |
ba53e6b4 DP |
1196 | producer = adapter->cmd_producer; |
1197 | smp_mb(); | |
1198 | consumer = adapter->last_cmd_consumer; | |
1199 | if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) { | |
1200 | netif_stop_queue(netdev); | |
1201 | smp_mb(); | |
1202 | return NETDEV_TX_BUSY; | |
53a01e00 | 1203 | } |
3d396eb1 | 1204 | |
3d396eb1 | 1205 | /* Copy the descriptors into the hardware */ |
3d396eb1 AK |
1206 | saved_producer = producer; |
1207 | hwdesc = &hw->cmd_desc_head[producer]; | |
1208 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
1209 | /* Take skb->data itself */ | |
1210 | pbuf = &adapter->cmd_buf_arr[producer]; | |
cb8011ad | 1211 | if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) { |
a608ab9c | 1212 | pbuf->mss = skb_shinfo(skb)->gso_size; |
ed33ebe4 | 1213 | hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
3d396eb1 AK |
1214 | } else { |
1215 | pbuf->mss = 0; | |
1216 | hwdesc->mss = 0; | |
1217 | } | |
3d396eb1 AK |
1218 | pbuf->total_length = skb->len; |
1219 | pbuf->skb = skb; | |
1220 | pbuf->cmd = TX_ETHER_PKT; | |
1221 | pbuf->frag_count = frag_count; | |
3176ff3e | 1222 | pbuf->port = adapter->portnum; |
3d396eb1 | 1223 | buffrag = &pbuf->frag_array[0]; |
3176ff3e | 1224 | buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len, |
3d396eb1 AK |
1225 | PCI_DMA_TODEVICE); |
1226 | buffrag->length = first_seg_len; | |
ed25ffa1 AK |
1227 | netxen_set_cmd_desc_totallength(hwdesc, skb->len); |
1228 | netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count); | |
1229 | netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT); | |
3d396eb1 | 1230 | |
3176ff3e | 1231 | netxen_set_cmd_desc_port(hwdesc, adapter->portnum); |
6c80b18d | 1232 | netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum); |
3d396eb1 AK |
1233 | hwdesc->buffer1_length = cpu_to_le16(first_seg_len); |
1234 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
1235 | ||
1236 | for (i = 1, k = 1; i < frag_count; i++, k++) { | |
1237 | struct skb_frag_struct *frag; | |
1238 | int len, temp_len; | |
1239 | unsigned long offset; | |
1240 | dma_addr_t temp_dma; | |
1241 | ||
1242 | /* move to next desc. if there is a need */ | |
1243 | if ((i & 0x3) == 0) { | |
1244 | k = 0; | |
ba53e6b4 | 1245 | producer = get_next_index(producer, num_txd); |
3d396eb1 AK |
1246 | hwdesc = &hw->cmd_desc_head[producer]; |
1247 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
53a01e00 | 1248 | pbuf = &adapter->cmd_buf_arr[producer]; |
1249 | pbuf->skb = NULL; | |
3d396eb1 AK |
1250 | } |
1251 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
1252 | len = frag->size; | |
1253 | offset = frag->page_offset; | |
1254 | ||
1255 | temp_len = len; | |
3176ff3e | 1256 | temp_dma = pci_map_page(adapter->pdev, frag->page, offset, |
3d396eb1 AK |
1257 | len, PCI_DMA_TODEVICE); |
1258 | ||
1259 | buffrag++; | |
1260 | buffrag->dma = temp_dma; | |
1261 | buffrag->length = temp_len; | |
1262 | ||
3d396eb1 AK |
1263 | switch (k) { |
1264 | case 0: | |
1265 | hwdesc->buffer1_length = cpu_to_le16(temp_len); | |
1266 | hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); | |
1267 | break; | |
1268 | case 1: | |
1269 | hwdesc->buffer2_length = cpu_to_le16(temp_len); | |
1270 | hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); | |
1271 | break; | |
1272 | case 2: | |
1273 | hwdesc->buffer3_length = cpu_to_le16(temp_len); | |
1274 | hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); | |
1275 | break; | |
1276 | case 3: | |
a608ab9c | 1277 | hwdesc->buffer4_length = cpu_to_le16(temp_len); |
3d396eb1 AK |
1278 | hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); |
1279 | break; | |
1280 | } | |
1281 | frag++; | |
1282 | } | |
ba53e6b4 | 1283 | producer = get_next_index(producer, num_txd); |
3d396eb1 AK |
1284 | |
1285 | /* might change opcode to TX_TCP_LSO */ | |
1286 | netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb); | |
1287 | ||
1288 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
1289 | * the descriptor ring | |
1290 | */ | |
ed25ffa1 AK |
1291 | if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer]) |
1292 | == TX_TCP_LSO) { | |
3d396eb1 AK |
1293 | int hdr_len, first_hdr_len, more_hdr; |
1294 | hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length; | |
ed25ffa1 AK |
1295 | if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) { |
1296 | first_hdr_len = sizeof(struct cmd_desc_type0) - 2; | |
3d396eb1 AK |
1297 | more_hdr = 1; |
1298 | } else { | |
1299 | first_hdr_len = hdr_len; | |
1300 | more_hdr = 0; | |
1301 | } | |
1302 | /* copy the MAC/IP/TCP headers to the cmd descriptor list */ | |
1303 | hwdesc = &hw->cmd_desc_head[producer]; | |
53a01e00 | 1304 | pbuf = &adapter->cmd_buf_arr[producer]; |
1305 | pbuf->skb = NULL; | |
3d396eb1 AK |
1306 | |
1307 | /* copy the first 64 bytes */ | |
ed25ffa1 | 1308 | memcpy(((void *)hwdesc) + 2, |
3d396eb1 | 1309 | (void *)(skb->data), first_hdr_len); |
ba53e6b4 | 1310 | producer = get_next_index(producer, num_txd); |
3d396eb1 AK |
1311 | |
1312 | if (more_hdr) { | |
1313 | hwdesc = &hw->cmd_desc_head[producer]; | |
53a01e00 | 1314 | pbuf = &adapter->cmd_buf_arr[producer]; |
1315 | pbuf->skb = NULL; | |
3d396eb1 AK |
1316 | /* copy the next 64 bytes - should be enough except |
1317 | * for pathological case | |
1318 | */ | |
d626f62b ACM |
1319 | skb_copy_from_linear_data_offset(skb, first_hdr_len, |
1320 | hwdesc, | |
1321 | (hdr_len - | |
1322 | first_hdr_len)); | |
ba53e6b4 | 1323 | producer = get_next_index(producer, num_txd); |
3d396eb1 AK |
1324 | } |
1325 | } | |
6c80b18d | 1326 | |
ba53e6b4 | 1327 | adapter->cmd_producer = producer; |
5dc16268 | 1328 | adapter->stats.txbytes += skb->len; |
6c80b18d | 1329 | |
ba53e6b4 | 1330 | netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer); |
3d396eb1 | 1331 | |
ba53e6b4 | 1332 | adapter->stats.xmitcalled++; |
3d396eb1 AK |
1333 | netdev->trans_start = jiffies; |
1334 | ||
3d396eb1 AK |
1335 | return NETDEV_TX_OK; |
1336 | } | |
1337 | ||
1338 | static void netxen_watchdog(unsigned long v) | |
1339 | { | |
1340 | struct netxen_adapter *adapter = (struct netxen_adapter *)v; | |
ed25ffa1 AK |
1341 | |
1342 | SCHEDULE_WORK(&adapter->watchdog_task); | |
3d396eb1 AK |
1343 | } |
1344 | ||
1345 | static void netxen_tx_timeout(struct net_device *netdev) | |
1346 | { | |
3176ff3e MT |
1347 | struct netxen_adapter *adapter = (struct netxen_adapter *) |
1348 | netdev_priv(netdev); | |
1349 | SCHEDULE_WORK(&adapter->tx_timeout_task); | |
3d396eb1 AK |
1350 | } |
1351 | ||
6d5aefb8 | 1352 | static void netxen_tx_timeout_task(struct work_struct *work) |
3d396eb1 | 1353 | { |
4790654c | 1354 | struct netxen_adapter *adapter = |
3176ff3e | 1355 | container_of(work, struct netxen_adapter, tx_timeout_task); |
3d396eb1 AK |
1356 | |
1357 | printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", | |
6c80b18d | 1358 | netxen_nic_driver_name, adapter->netdev->name); |
3d396eb1 | 1359 | |
ba53e6b4 DP |
1360 | netxen_nic_disable_int(adapter); |
1361 | napi_disable(&adapter->napi); | |
1362 | ||
6c80b18d | 1363 | adapter->netdev->trans_start = jiffies; |
ba53e6b4 DP |
1364 | |
1365 | napi_enable(&adapter->napi); | |
1366 | netxen_nic_enable_int(adapter); | |
6c80b18d | 1367 | netif_wake_queue(adapter->netdev); |
3d396eb1 AK |
1368 | } |
1369 | ||
05aaa02d DP |
1370 | static inline void |
1371 | netxen_handle_int(struct netxen_adapter *adapter) | |
3d396eb1 | 1372 | { |
2d1a3bbd | 1373 | netxen_nic_disable_int(adapter); |
05aaa02d | 1374 | napi_schedule(&adapter->napi); |
3d396eb1 AK |
1375 | } |
1376 | ||
e4c93c81 | 1377 | static irqreturn_t netxen_intr(int irq, void *data) |
3d396eb1 | 1378 | { |
1daec86a | 1379 | struct netxen_adapter *adapter = data; |
e01872af | 1380 | u32 our_int = 0; |
3d396eb1 | 1381 | |
3ce06a32 | 1382 | our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR); |
05aaa02d DP |
1383 | /* not our interrupt */ |
1384 | if ((our_int & (0x80 << adapter->portnum)) == 0) | |
1385 | return IRQ_NONE; | |
e01872af | 1386 | |
1387 | if (adapter->intr_scheme == INTR_SCHEME_PERPORT) { | |
1388 | /* claim interrupt */ | |
3ce06a32 DP |
1389 | adapter->pci_write_normalize(adapter, CRB_INT_VECTOR, |
1390 | our_int & ~((u32)(0x80 << adapter->portnum))); | |
e01872af | 1391 | } |
1392 | ||
05aaa02d | 1393 | netxen_handle_int(adapter); |
3d396eb1 AK |
1394 | |
1395 | return IRQ_HANDLED; | |
1396 | } | |
1397 | ||
e4c93c81 | 1398 | static irqreturn_t netxen_msi_intr(int irq, void *data) |
05aaa02d DP |
1399 | { |
1400 | struct netxen_adapter *adapter = data; | |
1401 | ||
1402 | netxen_handle_int(adapter); | |
1403 | return IRQ_HANDLED; | |
1404 | } | |
1405 | ||
bea3348e | 1406 | static int netxen_nic_poll(struct napi_struct *napi, int budget) |
3d396eb1 | 1407 | { |
bea3348e | 1408 | struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi); |
05aaa02d | 1409 | int tx_complete; |
3d396eb1 | 1410 | int ctx; |
bea3348e | 1411 | int work_done; |
3d396eb1 | 1412 | |
05aaa02d | 1413 | tx_complete = netxen_process_cmd_ring(adapter); |
3d396eb1 | 1414 | |
80922fbc | 1415 | work_done = 0; |
3d396eb1 AK |
1416 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
1417 | /* | |
1418 | * Fairness issue. This will give undue weight to the | |
1419 | * receive context 0. | |
1420 | */ | |
1421 | ||
1422 | /* | |
1423 | * To avoid starvation, we give each of our receivers, | |
1424 | * a fraction of the quota. Sometimes, it might happen that we | |
1425 | * have enough quota to process every packet, but since all the | |
1426 | * packets are on one context, it gets only half of the quota, | |
1427 | * and ends up not processing it. | |
1428 | */ | |
bea3348e SH |
1429 | work_done += netxen_process_rcv_ring(adapter, ctx, |
1430 | budget / MAX_RCV_CTX); | |
3d396eb1 AK |
1431 | } |
1432 | ||
05aaa02d DP |
1433 | if ((work_done < budget) && tx_complete) { |
1434 | netif_rx_complete(adapter->netdev, &adapter->napi); | |
3d396eb1 AK |
1435 | netxen_nic_enable_int(adapter); |
1436 | } | |
1437 | ||
bea3348e | 1438 | return work_done; |
3d396eb1 AK |
1439 | } |
1440 | ||
1441 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1442 | static void netxen_nic_poll_controller(struct net_device *netdev) | |
1443 | { | |
3176ff3e | 1444 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 | 1445 | disable_irq(adapter->irq); |
1494a814 | 1446 | netxen_intr(adapter->irq, adapter); |
3d396eb1 AK |
1447 | enable_irq(adapter->irq); |
1448 | } | |
1449 | #endif | |
3d396eb1 AK |
1450 | |
1451 | static struct pci_driver netxen_driver = { | |
1452 | .name = netxen_nic_driver_name, | |
1453 | .id_table = netxen_pci_tbl, | |
1454 | .probe = netxen_nic_probe, | |
1455 | .remove = __devexit_p(netxen_nic_remove) | |
1456 | }; | |
1457 | ||
1458 | /* Driver Registration on NetXen card */ | |
1459 | ||
1460 | static int __init netxen_init_module(void) | |
1461 | { | |
79ea13ce | 1462 | if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL) |
ed25ffa1 AK |
1463 | return -ENOMEM; |
1464 | ||
184231bd | 1465 | return pci_register_driver(&netxen_driver); |
3d396eb1 AK |
1466 | } |
1467 | ||
1468 | module_init(netxen_init_module); | |
1469 | ||
1470 | static void __exit netxen_exit_module(void) | |
1471 | { | |
3d396eb1 | 1472 | pci_unregister_driver(&netxen_driver); |
9de06610 | 1473 | destroy_workqueue(netxen_workq); |
3d396eb1 AK |
1474 | } |
1475 | ||
1476 | module_exit(netxen_exit_module); |