Commit | Line | Data |
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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 AK |
51 | |
52 | #define NETXEN_NETDEV_WEIGHT 120 | |
53 | #define NETXEN_ADAPTER_UP_MAGIC 777 | |
cb8011ad | 54 | #define NETXEN_NIC_PEG_TUNE 0 |
3d396eb1 AK |
55 | |
56 | /* Local functions to NetXen NIC driver */ | |
57 | static int __devinit netxen_nic_probe(struct pci_dev *pdev, | |
58 | const struct pci_device_id *ent); | |
59 | static void __devexit netxen_nic_remove(struct pci_dev *pdev); | |
60 | static int netxen_nic_open(struct net_device *netdev); | |
61 | static int netxen_nic_close(struct net_device *netdev); | |
62 | static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *); | |
63 | static void netxen_tx_timeout(struct net_device *netdev); | |
6d5aefb8 | 64 | static void netxen_tx_timeout_task(struct work_struct *work); |
3d396eb1 | 65 | static void netxen_watchdog(unsigned long); |
bea3348e | 66 | static int netxen_nic_poll(struct napi_struct *napi, int budget); |
3d396eb1 AK |
67 | #ifdef CONFIG_NET_POLL_CONTROLLER |
68 | static void netxen_nic_poll_controller(struct net_device *netdev); | |
69 | #endif | |
1494a814 | 70 | static irqreturn_t netxen_intr(int irq, void *data); |
05aaa02d | 71 | static irqreturn_t netxen_msi_intr(int irq, void *data); |
3d396eb1 AK |
72 | |
73 | /* PCI Device ID Table */ | |
74 | static struct pci_device_id netxen_pci_tbl[] __devinitdata = { | |
dcd56fdb DP |
75 | {PCI_DEVICE(0x4040, 0x0001), PCI_DEVICE_CLASS(0x020000, ~0)}, |
76 | {PCI_DEVICE(0x4040, 0x0002), PCI_DEVICE_CLASS(0x020000, ~0)}, | |
77 | {PCI_DEVICE(0x4040, 0x0003), PCI_DEVICE_CLASS(0x020000, ~0)}, | |
78 | {PCI_DEVICE(0x4040, 0x0004), PCI_DEVICE_CLASS(0x020000, ~0)}, | |
79 | {PCI_DEVICE(0x4040, 0x0005), PCI_DEVICE_CLASS(0x020000, ~0)}, | |
80 | {PCI_DEVICE(0x4040, 0x0024), PCI_DEVICE_CLASS(0x020000, ~0)}, | |
81 | {PCI_DEVICE(0x4040, 0x0025), PCI_DEVICE_CLASS(0x020000, ~0)}, | |
3d396eb1 AK |
82 | {0,} |
83 | }; | |
84 | ||
85 | MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); | |
86 | ||
b1555130 AB |
87 | /* |
88 | * In netxen_nic_down(), we must wait for any pending callback requests into | |
89 | * netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be | |
90 | * reenabled right after it is deleted in netxen_nic_down(). | |
91 | * FLUSH_SCHEDULED_WORK() does this synchronization. | |
92 | * | |
93 | * Normally, schedule_work()/flush_scheduled_work() could have worked, but | |
94 | * netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off() | |
95 | * call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a | |
96 | * subsequent call to flush_scheduled_work() in netxen_nic_down() would cause | |
97 | * linkwatch_event() to be executed which also attempts to acquire the rtnl | |
98 | * lock thus causing a deadlock. | |
99 | */ | |
100 | ||
101 | static struct workqueue_struct *netxen_workq; | |
102 | #define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp) | |
103 | #define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq) | |
104 | ||
ed25ffa1 AK |
105 | static void netxen_watchdog(unsigned long); |
106 | ||
993fb90c AB |
107 | static void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter, |
108 | uint32_t crb_producer) | |
3176ff3e MT |
109 | { |
110 | switch (adapter->portnum) { | |
111 | case 0: | |
112 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
113 | (adapter, CRB_CMD_PRODUCER_OFFSET)); | |
114 | return; | |
115 | case 1: | |
116 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
117 | (adapter, CRB_CMD_PRODUCER_OFFSET_1)); | |
118 | return; | |
119 | case 2: | |
120 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
121 | (adapter, CRB_CMD_PRODUCER_OFFSET_2)); | |
122 | return; | |
123 | case 3: | |
124 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
125 | (adapter, CRB_CMD_PRODUCER_OFFSET_3)); | |
126 | return; | |
127 | default: | |
128 | printk(KERN_WARNING "We tried to update " | |
129 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
130 | "PCI function id %d\n", | |
131 | adapter->portnum); | |
132 | return; | |
133 | } | |
134 | } | |
135 | ||
993fb90c AB |
136 | static void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, |
137 | u32 crb_consumer) | |
3176ff3e MT |
138 | { |
139 | switch (adapter->portnum) { | |
140 | case 0: | |
141 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
142 | (adapter, CRB_CMD_CONSUMER_OFFSET)); | |
143 | return; | |
144 | case 1: | |
145 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
146 | (adapter, CRB_CMD_CONSUMER_OFFSET_1)); | |
147 | return; | |
148 | case 2: | |
149 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
150 | (adapter, CRB_CMD_CONSUMER_OFFSET_2)); | |
151 | return; | |
152 | case 3: | |
153 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
154 | (adapter, CRB_CMD_CONSUMER_OFFSET_3)); | |
155 | return; | |
156 | default: | |
157 | printk(KERN_WARNING "We tried to update " | |
158 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
159 | "PCI function id %d\n", | |
160 | adapter->portnum); | |
161 | return; | |
162 | } | |
163 | } | |
164 | ||
165 | #define ADAPTER_LIST_SIZE 12 | |
3176ff3e | 166 | |
443be796 DP |
167 | static uint32_t msi_tgt_status[4] = { |
168 | ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1, | |
169 | ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3 | |
170 | }; | |
171 | ||
172 | static uint32_t sw_int_mask[4] = { | |
173 | CRB_SW_INT_MASK_0, CRB_SW_INT_MASK_1, | |
174 | CRB_SW_INT_MASK_2, CRB_SW_INT_MASK_3 | |
175 | }; | |
176 | ||
4638aef1 SH |
177 | static void netxen_nic_disable_int(struct netxen_adapter *adapter) |
178 | { | |
443be796 | 179 | u32 mask = 0x7ff; |
4638aef1 | 180 | int retries = 32; |
443be796 DP |
181 | int port = adapter->portnum; |
182 | int pci_fn = adapter->ahw.pci_func; | |
4638aef1 | 183 | |
f0c88f9c | 184 | if (adapter->msi_mode != MSI_MODE_MULTIFUNC) |
443be796 | 185 | writel(0x0, NETXEN_CRB_NORMALIZE(adapter, sw_int_mask[port])); |
4638aef1 SH |
186 | |
187 | if (adapter->intr_scheme != -1 && | |
188 | adapter->intr_scheme != INTR_SCHEME_PERPORT) | |
189 | writel(mask,PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK)); | |
190 | ||
4638aef1 SH |
191 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { |
192 | do { | |
193 | writel(0xffffffff, | |
194 | PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_STATUS)); | |
195 | mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); | |
196 | if (!(mask & 0x80)) | |
197 | break; | |
198 | udelay(10); | |
199 | } while (--retries); | |
200 | ||
201 | if (!retries) { | |
202 | printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n", | |
203 | netxen_nic_driver_name); | |
204 | } | |
443be796 DP |
205 | } else { |
206 | if (adapter->msi_mode == MSI_MODE_MULTIFUNC) { | |
207 | writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter, | |
208 | msi_tgt_status[pci_fn])); | |
209 | } | |
4638aef1 | 210 | } |
4638aef1 SH |
211 | } |
212 | ||
213 | static void netxen_nic_enable_int(struct netxen_adapter *adapter) | |
214 | { | |
215 | u32 mask; | |
443be796 | 216 | int port = adapter->portnum; |
4638aef1 SH |
217 | |
218 | DPRINTK(1, INFO, "Entered ISR Enable \n"); | |
219 | ||
220 | if (adapter->intr_scheme != -1 && | |
221 | adapter->intr_scheme != INTR_SCHEME_PERPORT) { | |
222 | switch (adapter->ahw.board_type) { | |
223 | case NETXEN_NIC_GBE: | |
224 | mask = 0x77b; | |
225 | break; | |
226 | case NETXEN_NIC_XGBE: | |
227 | mask = 0x77f; | |
228 | break; | |
229 | default: | |
230 | mask = 0x7ff; | |
231 | break; | |
232 | } | |
233 | ||
234 | writel(mask, PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK)); | |
235 | } | |
236 | ||
443be796 | 237 | writel(0x1, NETXEN_CRB_NORMALIZE(adapter, sw_int_mask[port])); |
4638aef1 SH |
238 | |
239 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
240 | mask = 0xbff; | |
241 | if (adapter->intr_scheme != -1 && | |
242 | adapter->intr_scheme != INTR_SCHEME_PERPORT) { | |
243 | writel(0X0, NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); | |
244 | } | |
245 | writel(mask, | |
246 | PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_MASK)); | |
247 | } | |
248 | ||
249 | DPRINTK(1, INFO, "Done with enable Int\n"); | |
250 | } | |
251 | ||
3d396eb1 AK |
252 | /* |
253 | * netxen_nic_probe() | |
254 | * | |
255 | * The Linux system will invoke this after identifying the vendor ID and | |
256 | * device Id in the pci_tbl supported by this module. | |
257 | * | |
258 | * A quad port card has one operational PCI config space, (function 0), | |
259 | * which is used to access all four ports. | |
260 | * | |
261 | * This routine will initialize the adapter, and setup the global parameters | |
262 | * along with the port's specific structure. | |
263 | */ | |
264 | static int __devinit | |
265 | netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
266 | { | |
267 | struct net_device *netdev = NULL; | |
268 | struct netxen_adapter *adapter = NULL; | |
ed25ffa1 AK |
269 | void __iomem *mem_ptr0 = NULL; |
270 | void __iomem *mem_ptr1 = NULL; | |
271 | void __iomem *mem_ptr2 = NULL; | |
6c80b18d MT |
272 | unsigned long first_page_group_end; |
273 | unsigned long first_page_group_start; | |
274 | ||
cb8011ad | 275 | |
a608ab9c | 276 | u8 __iomem *db_ptr = NULL; |
ed25ffa1 | 277 | unsigned long mem_base, mem_len, db_base, db_len; |
3176ff3e | 278 | int pci_using_dac, i = 0, err; |
3d396eb1 AK |
279 | int ring; |
280 | struct netxen_recv_context *recv_ctx = NULL; | |
281 | struct netxen_rcv_desc_ctx *rcv_desc = NULL; | |
282 | struct netxen_cmd_buffer *cmd_buf_arr = NULL; | |
f305f789 | 283 | __le64 mac_addr[FLASH_NUM_PORTS + 1]; |
6c80b18d MT |
284 | int valid_mac = 0; |
285 | u32 val; | |
3176ff3e | 286 | int pci_func_id = PCI_FUNC(pdev->devfn); |
0795af57 | 287 | DECLARE_MAC_BUF(mac); |
3d396eb1 | 288 | |
dcd56fdb DP |
289 | if (pci_func_id == 0) |
290 | printk(KERN_INFO "%s \n", netxen_nic_driver_string); | |
6c80b18d | 291 | |
3176ff3e | 292 | if (pdev->class != 0x020000) { |
dcd56fdb | 293 | printk(KERN_DEBUG "NetXen function %d, class %x will not " |
3176ff3e | 294 | "be enabled.\n",pci_func_id, pdev->class); |
ed25ffa1 AK |
295 | return -ENODEV; |
296 | } | |
3d396eb1 AK |
297 | if ((err = pci_enable_device(pdev))) |
298 | return err; | |
299 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
300 | err = -ENODEV; | |
301 | goto err_out_disable_pdev; | |
302 | } | |
303 | ||
304 | if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) | |
305 | goto err_out_disable_pdev; | |
306 | ||
307 | pci_set_master(pdev); | |
44c10138 | 308 | if (pdev->revision == NX_P2_C1 && |
ed25ffa1 AK |
309 | (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) && |
310 | (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) { | |
3d396eb1 | 311 | pci_using_dac = 1; |
ed25ffa1 | 312 | } else { |
3d396eb1 AK |
313 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
314 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) | |
315 | goto err_out_free_res; | |
316 | ||
317 | pci_using_dac = 0; | |
318 | } | |
319 | ||
3176ff3e MT |
320 | |
321 | netdev = alloc_etherdev(sizeof(struct netxen_adapter)); | |
322 | if(!netdev) { | |
323 | printk(KERN_ERR"%s: Failed to allocate memory for the " | |
324 | "device block.Check system memory resource" | |
325 | " usage.\n", netxen_nic_driver_name); | |
326 | goto err_out_free_res; | |
327 | } | |
328 | ||
3176ff3e MT |
329 | SET_NETDEV_DEV(netdev, &pdev->dev); |
330 | ||
331 | adapter = netdev->priv; | |
3176ff3e MT |
332 | |
333 | adapter->ahw.pdev = pdev; | |
13ba9c77 MT |
334 | adapter->ahw.pci_func = pci_func_id; |
335 | ||
3d396eb1 AK |
336 | /* remap phys address */ |
337 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
338 | mem_len = pci_resource_len(pdev, 0); | |
339 | ||
340 | /* 128 Meg of memory */ | |
6c80b18d MT |
341 | if (mem_len == NETXEN_PCI_128MB_SIZE) { |
342 | mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); | |
343 | mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START, | |
344 | SECOND_PAGE_GROUP_SIZE); | |
345 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START, | |
346 | THIRD_PAGE_GROUP_SIZE); | |
347 | first_page_group_start = FIRST_PAGE_GROUP_START; | |
348 | first_page_group_end = FIRST_PAGE_GROUP_END; | |
349 | } else if (mem_len == NETXEN_PCI_32MB_SIZE) { | |
350 | mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE); | |
351 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START - | |
352 | SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); | |
353 | first_page_group_start = 0; | |
354 | first_page_group_end = 0; | |
355 | } else { | |
4790654c | 356 | err = -EIO; |
6c80b18d MT |
357 | goto err_out_free_netdev; |
358 | } | |
cb8011ad | 359 | |
79ea13ce AV |
360 | if ((!mem_ptr0 && mem_len == NETXEN_PCI_128MB_SIZE) || |
361 | !mem_ptr1 || !mem_ptr2) { | |
ed25ffa1 | 362 | DPRINTK(ERR, |
cb8011ad AK |
363 | "Cannot remap adapter memory aborting.:" |
364 | "0 -> %p, 1 -> %p, 2 -> %p\n", | |
365 | mem_ptr0, mem_ptr1, mem_ptr2); | |
366 | ||
3d396eb1 | 367 | err = -EIO; |
ed25ffa1 AK |
368 | goto err_out_iounmap; |
369 | } | |
370 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ | |
371 | db_len = pci_resource_len(pdev, 4); | |
372 | ||
373 | if (db_len == 0) { | |
374 | printk(KERN_ERR "%s: doorbell is disabled\n", | |
375 | netxen_nic_driver_name); | |
376 | err = -EIO; | |
377 | goto err_out_iounmap; | |
378 | } | |
379 | DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base, | |
380 | db_len); | |
381 | ||
382 | db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); | |
a608ab9c | 383 | if (!db_ptr) { |
ed25ffa1 AK |
384 | printk(KERN_ERR "%s: Failed to allocate doorbell map.", |
385 | netxen_nic_driver_name); | |
386 | err = -EIO; | |
387 | goto err_out_iounmap; | |
3d396eb1 | 388 | } |
ed25ffa1 | 389 | DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr); |
3d396eb1 | 390 | |
6c80b18d MT |
391 | adapter->ahw.pci_base0 = mem_ptr0; |
392 | adapter->ahw.first_page_group_start = first_page_group_start; | |
393 | adapter->ahw.first_page_group_end = first_page_group_end; | |
394 | adapter->ahw.pci_base1 = mem_ptr1; | |
395 | adapter->ahw.pci_base2 = mem_ptr2; | |
396 | adapter->ahw.db_base = db_ptr; | |
397 | adapter->ahw.db_len = db_len; | |
3d396eb1 | 398 | |
3176ff3e MT |
399 | adapter->netdev = netdev; |
400 | adapter->pdev = pdev; | |
2d1a3bbd | 401 | |
bea3348e SH |
402 | netif_napi_add(netdev, &adapter->napi, |
403 | netxen_nic_poll, NETXEN_NETDEV_WEIGHT); | |
404 | ||
2d1a3bbd | 405 | /* this will be read from FW later */ |
406 | adapter->intr_scheme = -1; | |
443be796 | 407 | adapter->msi_mode = -1; |
2d1a3bbd | 408 | |
409 | /* This will be reset for mezz cards */ | |
3176ff3e | 410 | adapter->portnum = pci_func_id; |
2d1a3bbd | 411 | adapter->status &= ~NETXEN_NETDEV_STATUS; |
200eef20 | 412 | adapter->rx_csum = 1; |
3176ff3e MT |
413 | |
414 | netdev->open = netxen_nic_open; | |
415 | netdev->stop = netxen_nic_close; | |
416 | netdev->hard_start_xmit = netxen_nic_xmit_frame; | |
4790654c | 417 | netdev->get_stats = netxen_nic_get_stats; |
3176ff3e MT |
418 | netdev->set_multicast_list = netxen_nic_set_multi; |
419 | netdev->set_mac_address = netxen_nic_set_mac; | |
420 | netdev->change_mtu = netxen_nic_change_mtu; | |
421 | netdev->tx_timeout = netxen_tx_timeout; | |
05aaa02d | 422 | netdev->watchdog_timeo = 2*HZ; |
3176ff3e MT |
423 | |
424 | netxen_nic_change_mtu(netdev, netdev->mtu); | |
425 | ||
426 | SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); | |
3176ff3e MT |
427 | #ifdef CONFIG_NET_POLL_CONTROLLER |
428 | netdev->poll_controller = netxen_nic_poll_controller; | |
429 | #endif | |
430 | /* ScatterGather support */ | |
431 | netdev->features = NETIF_F_SG; | |
432 | netdev->features |= NETIF_F_IP_CSUM; | |
433 | netdev->features |= NETIF_F_TSO; | |
434 | ||
435 | if (pci_using_dac) | |
436 | netdev->features |= NETIF_F_HIGHDMA; | |
437 | ||
644caeef | 438 | if (pci_enable_msi(pdev)) |
3176ff3e | 439 | adapter->flags &= ~NETXEN_NIC_MSI_ENABLED; |
644caeef | 440 | else |
3176ff3e MT |
441 | adapter->flags |= NETXEN_NIC_MSI_ENABLED; |
442 | ||
6c80b18d MT |
443 | netdev->irq = pdev->irq; |
444 | INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task); | |
445 | ||
446 | /* | |
447 | * Set the CRB window to invalid. If any register in window 0 is | |
448 | * accessed it should set the window to 0 and then reset it to 1. | |
449 | */ | |
450 | adapter->curr_window = 255; | |
451 | ||
dcd56fdb DP |
452 | if (netxen_nic_get_board_info(adapter) != 0) { |
453 | printk("%s: Error getting board config info.\n", | |
454 | netxen_nic_driver_name); | |
455 | err = -EIO; | |
456 | goto err_out_iounmap; | |
457 | } | |
6c80b18d | 458 | |
6c80b18d MT |
459 | /* |
460 | * Adapter in our case is quad port so initialize it before | |
461 | * initializing the ports | |
462 | */ | |
463 | ||
464 | netxen_initialize_adapter_ops(adapter); | |
465 | ||
466 | adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST; | |
467 | if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) || | |
4790654c JG |
468 | (adapter->ahw.boardcfg.board_type == |
469 | NETXEN_BRDTYPE_P2_SB31_2G)) | |
6c80b18d MT |
470 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; |
471 | else | |
472 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS; | |
473 | adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; | |
474 | adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; | |
475 | ||
3d396eb1 AK |
476 | cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE); |
477 | if (cmd_buf_arr == NULL) { | |
ed25ffa1 AK |
478 | printk(KERN_ERR |
479 | "%s: Could not allocate cmd_buf_arr memory:%d\n", | |
480 | netxen_nic_driver_name, (int)TX_RINGSIZE); | |
3d396eb1 AK |
481 | err = -ENOMEM; |
482 | goto err_out_free_adapter; | |
483 | } | |
484 | memset(cmd_buf_arr, 0, TX_RINGSIZE); | |
6c80b18d | 485 | adapter->cmd_buf_arr = cmd_buf_arr; |
3d396eb1 AK |
486 | |
487 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
488 | recv_ctx = &adapter->recv_ctx[i]; | |
489 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
490 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
491 | switch (RCV_DESC_TYPE(ring)) { | |
492 | case RCV_DESC_NORMAL: | |
493 | rcv_desc->max_rx_desc_count = | |
494 | adapter->max_rx_desc_count; | |
495 | rcv_desc->flags = RCV_DESC_NORMAL; | |
496 | rcv_desc->dma_size = RX_DMA_MAP_LEN; | |
497 | rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH; | |
498 | break; | |
499 | ||
500 | case RCV_DESC_JUMBO: | |
501 | rcv_desc->max_rx_desc_count = | |
502 | adapter->max_jumbo_rx_desc_count; | |
503 | rcv_desc->flags = RCV_DESC_JUMBO; | |
504 | rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN; | |
505 | rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH; | |
506 | break; | |
507 | ||
ed25ffa1 AK |
508 | case RCV_RING_LRO: |
509 | rcv_desc->max_rx_desc_count = | |
510 | adapter->max_lro_rx_desc_count; | |
511 | rcv_desc->flags = RCV_DESC_LRO; | |
512 | rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN; | |
513 | rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH; | |
514 | break; | |
515 | ||
3d396eb1 AK |
516 | } |
517 | rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *) | |
518 | vmalloc(RCV_BUFFSIZE); | |
519 | ||
520 | if (rcv_desc->rx_buf_arr == NULL) { | |
5bc51424 | 521 | printk(KERN_ERR "%s: Could not allocate " |
ed25ffa1 AK |
522 | "rcv_desc->rx_buf_arr memory:%d\n", |
523 | netxen_nic_driver_name, | |
524 | (int)RCV_BUFFSIZE); | |
3d396eb1 AK |
525 | err = -ENOMEM; |
526 | goto err_out_free_rx_buffer; | |
527 | } | |
528 | memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE); | |
529 | } | |
530 | ||
531 | } | |
532 | ||
ed25ffa1 | 533 | netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */ |
6c80b18d | 534 | |
13ba9c77 | 535 | /* Mezz cards have PCI function 0,2,3 enabled */ |
dc515f2e DP |
536 | switch (adapter->ahw.boardcfg.board_type) { |
537 | case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ: | |
538 | case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ: | |
539 | if (pci_func_id >= 2) | |
13ba9c77 | 540 | adapter->portnum = pci_func_id - 2; |
dc515f2e DP |
541 | break; |
542 | default: | |
543 | break; | |
544 | } | |
13ba9c77 | 545 | |
3d396eb1 AK |
546 | init_timer(&adapter->watchdog_timer); |
547 | adapter->ahw.xg_linkup = 0; | |
548 | adapter->watchdog_timer.function = &netxen_watchdog; | |
549 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
6d5aefb8 | 550 | INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task); |
3d396eb1 | 551 | adapter->ahw.pdev = pdev; |
44c10138 | 552 | adapter->ahw.revision_id = pdev->revision; |
3d396eb1 | 553 | |
6c80b18d MT |
554 | /* make sure Window == 1 */ |
555 | netxen_nic_pci_change_crbwindow(adapter, 1); | |
556 | ||
3176ff3e MT |
557 | netxen_nic_update_cmd_producer(adapter, 0); |
558 | netxen_nic_update_cmd_consumer(adapter, 0); | |
6c80b18d | 559 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO)); |
3d396eb1 AK |
560 | |
561 | if (netxen_is_flash_supported(adapter) == 0 && | |
562 | netxen_get_flash_mac_addr(adapter, mac_addr) == 0) | |
563 | valid_mac = 1; | |
564 | else | |
565 | valid_mac = 0; | |
566 | ||
3176ff3e | 567 | if (valid_mac) { |
13ba9c77 | 568 | unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum]; |
3176ff3e MT |
569 | netdev->dev_addr[0] = *(p + 5); |
570 | netdev->dev_addr[1] = *(p + 4); | |
571 | netdev->dev_addr[2] = *(p + 3); | |
572 | netdev->dev_addr[3] = *(p + 2); | |
573 | netdev->dev_addr[4] = *(p + 1); | |
574 | netdev->dev_addr[5] = *(p + 0); | |
575 | ||
576 | memcpy(netdev->perm_addr, netdev->dev_addr, | |
577 | netdev->addr_len); | |
578 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
0795af57 JP |
579 | printk(KERN_ERR "%s: Bad MAC address %s.\n", |
580 | netxen_nic_driver_name, | |
581 | print_mac(mac, netdev->dev_addr)); | |
3176ff3e MT |
582 | } else { |
583 | if (adapter->macaddr_set) | |
584 | adapter->macaddr_set(adapter, | |
585 | netdev->dev_addr); | |
586 | } | |
587 | } | |
588 | ||
6c80b18d | 589 | if (adapter->portnum == 0) { |
13ba9c77 | 590 | err = netxen_initialize_adapter_offload(adapter); |
4790654c | 591 | if (err) |
6c80b18d | 592 | goto err_out_free_rx_buffer; |
4790654c | 593 | val = readl(NETXEN_CRB_NORMALIZE(adapter, |
6c80b18d MT |
594 | NETXEN_CAM_RAM(0x1fc))); |
595 | if (val == 0x55555555) { | |
596 | /* This is the first boot after power up */ | |
644caeef | 597 | netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val); |
96acb6eb DP |
598 | if (!(val & 0x4)) { |
599 | val |= 0x4; | |
600 | netxen_nic_write_w0(adapter, NETXEN_PCIE_REG(0x4), val); | |
601 | netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val); | |
602 | if (!(val & 0x4)) | |
603 | printk(KERN_ERR "%s: failed to set MSI bit in PCI-e reg\n", | |
604 | netxen_nic_driver_name); | |
605 | } | |
6c80b18d MT |
606 | val = readl(NETXEN_CRB_NORMALIZE(adapter, |
607 | NETXEN_ROMUSB_GLB_SW_RESET)); | |
608 | printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val); | |
609 | if (val != 0x80000f) { | |
610 | /* clear the register for future unloads/loads */ | |
644caeef | 611 | writel(0, NETXEN_CRB_NORMALIZE(adapter, |
612 | NETXEN_CAM_RAM(0x1fc))); | |
613 | printk(KERN_ERR "ERROR in NetXen HW init sequence.\n"); | |
614 | err = -ENODEV; | |
615 | goto err_out_free_dev; | |
6c80b18d | 616 | } |
439b454e DP |
617 | } else { |
618 | writel(0, NETXEN_CRB_NORMALIZE(adapter, | |
619 | CRB_CMDPEG_STATE)); | |
620 | netxen_pinit_from_rom(adapter, 0); | |
621 | msleep(1); | |
622 | netxen_load_firmware(adapter); | |
623 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
6c80b18d | 624 | } |
96acb6eb DP |
625 | |
626 | /* clear the register for future unloads/loads */ | |
627 | writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc))); | |
439b454e | 628 | dev_info(&pdev->dev, "cmdpeg state: 0x%0x\n", |
6c80b18d MT |
629 | readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE))); |
630 | ||
631 | /* | |
632 | * Tell the hardware our version number. | |
633 | */ | |
4790654c | 634 | i = (_NETXEN_NIC_LINUX_MAJOR << 16) |
6c80b18d MT |
635 | | ((_NETXEN_NIC_LINUX_MINOR << 8)) |
636 | | (_NETXEN_NIC_LINUX_SUBVERSION); | |
637 | writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION)); | |
3d396eb1 | 638 | |
3176ff3e MT |
639 | /* Unlock the HW, prompting the boot sequence */ |
640 | writel(1, | |
641 | NETXEN_CRB_NORMALIZE(adapter, | |
642 | NETXEN_ROMUSB_GLB_PEGTUNE_DONE)); | |
643 | /* Handshake with the card before we register the devices. */ | |
644 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
645 | } | |
3d396eb1 | 646 | |
3d396eb1 | 647 | /* |
6c80b18d | 648 | * See if the firmware gave us a virtual-physical port mapping. |
3d396eb1 | 649 | */ |
dcd56fdb | 650 | adapter->physical_port = adapter->portnum; |
6c80b18d MT |
651 | i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum))); |
652 | if (i != 0x55555555) | |
3276fbad | 653 | adapter->physical_port = i; |
6c80b18d | 654 | |
3176ff3e MT |
655 | netif_carrier_off(netdev); |
656 | netif_stop_queue(netdev); | |
657 | ||
6c80b18d MT |
658 | if ((err = register_netdev(netdev))) { |
659 | printk(KERN_ERR "%s: register_netdev failed port #%d" | |
660 | " aborting\n", netxen_nic_driver_name, | |
661 | adapter->portnum); | |
662 | err = -EIO; | |
663 | goto err_out_free_dev; | |
664 | } | |
665 | ||
dcd56fdb | 666 | netxen_nic_flash_print(adapter); |
6c80b18d | 667 | pci_set_drvdata(pdev, adapter); |
3d396eb1 | 668 | |
3d396eb1 AK |
669 | return 0; |
670 | ||
6c80b18d MT |
671 | err_out_free_dev: |
672 | if (adapter->portnum == 0) | |
673 | netxen_free_adapter_offload(adapter); | |
ed25ffa1 | 674 | |
6c80b18d | 675 | err_out_free_rx_buffer: |
3d396eb1 AK |
676 | for (i = 0; i < MAX_RCV_CTX; ++i) { |
677 | recv_ctx = &adapter->recv_ctx[i]; | |
678 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
679 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
680 | if (rcv_desc->rx_buf_arr != NULL) { | |
681 | vfree(rcv_desc->rx_buf_arr); | |
682 | rcv_desc->rx_buf_arr = NULL; | |
683 | } | |
684 | } | |
685 | } | |
3d396eb1 AK |
686 | vfree(cmd_buf_arr); |
687 | ||
6c80b18d MT |
688 | err_out_free_adapter: |
689 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
690 | pci_disable_msi(pdev); | |
691 | ||
3d396eb1 | 692 | pci_set_drvdata(pdev, NULL); |
3d396eb1 | 693 | |
ed25ffa1 AK |
694 | if (db_ptr) |
695 | iounmap(db_ptr); | |
696 | ||
6c80b18d | 697 | err_out_iounmap: |
ed25ffa1 AK |
698 | if (mem_ptr0) |
699 | iounmap(mem_ptr0); | |
700 | if (mem_ptr1) | |
701 | iounmap(mem_ptr1); | |
702 | if (mem_ptr2) | |
703 | iounmap(mem_ptr2); | |
cb8011ad | 704 | |
6c80b18d MT |
705 | err_out_free_netdev: |
706 | free_netdev(netdev); | |
707 | ||
708 | err_out_free_res: | |
3d396eb1 | 709 | pci_release_regions(pdev); |
6c80b18d MT |
710 | |
711 | err_out_disable_pdev: | |
3d396eb1 AK |
712 | pci_disable_device(pdev); |
713 | return err; | |
714 | } | |
715 | ||
716 | static void __devexit netxen_nic_remove(struct pci_dev *pdev) | |
717 | { | |
718 | struct netxen_adapter *adapter; | |
3176ff3e | 719 | struct net_device *netdev; |
3d396eb1 AK |
720 | struct netxen_rx_buffer *buffer; |
721 | struct netxen_recv_context *recv_ctx; | |
722 | struct netxen_rcv_desc_ctx *rcv_desc; | |
96acb6eb DP |
723 | int i, ctxid, ring; |
724 | static int init_firmware_done = 0; | |
3d396eb1 | 725 | |
6c80b18d | 726 | adapter = pci_get_drvdata(pdev); |
3d396eb1 AK |
727 | if (adapter == NULL) |
728 | return; | |
729 | ||
6c80b18d MT |
730 | netdev = adapter->netdev; |
731 | ||
96acb6eb DP |
732 | unregister_netdev(netdev); |
733 | ||
96acb6eb DP |
734 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
735 | init_firmware_done++; | |
3d396eb1 | 736 | netxen_free_hw_resources(adapter); |
96acb6eb | 737 | } |
3d396eb1 | 738 | |
3d396eb1 AK |
739 | for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) { |
740 | recv_ctx = &adapter->recv_ctx[ctxid]; | |
741 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
742 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
743 | for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) { | |
744 | buffer = &(rcv_desc->rx_buf_arr[i]); | |
745 | if (buffer->state == NETXEN_BUFFER_FREE) | |
746 | continue; | |
747 | pci_unmap_single(pdev, buffer->dma, | |
748 | rcv_desc->dma_size, | |
749 | PCI_DMA_FROMDEVICE); | |
750 | if (buffer->skb != NULL) | |
751 | dev_kfree_skb_any(buffer->skb); | |
752 | } | |
753 | vfree(rcv_desc->rx_buf_arr); | |
754 | } | |
755 | } | |
756 | ||
6c80b18d MT |
757 | vfree(adapter->cmd_buf_arr); |
758 | ||
439b454e DP |
759 | if (adapter->portnum == 0) |
760 | netxen_free_adapter_offload(adapter); | |
96acb6eb | 761 | |
3052246c | 762 | if (adapter->irq) |
763 | free_irq(adapter->irq, adapter); | |
764 | ||
765 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
766 | pci_disable_msi(pdev); | |
767 | ||
6c80b18d MT |
768 | iounmap(adapter->ahw.db_base); |
769 | iounmap(adapter->ahw.pci_base0); | |
770 | iounmap(adapter->ahw.pci_base1); | |
771 | iounmap(adapter->ahw.pci_base2); | |
595e3fb8 MT |
772 | |
773 | pci_release_regions(pdev); | |
3052246c | 774 | pci_disable_device(pdev); |
595e3fb8 MT |
775 | pci_set_drvdata(pdev, NULL); |
776 | ||
6c80b18d | 777 | free_netdev(netdev); |
3d396eb1 AK |
778 | } |
779 | ||
780 | /* | |
781 | * Called when a network interface is made active | |
782 | * @returns 0 on success, negative value on failure | |
783 | */ | |
784 | static int netxen_nic_open(struct net_device *netdev) | |
785 | { | |
3176ff3e | 786 | struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv; |
3d396eb1 AK |
787 | int err = 0; |
788 | int ctx, ring; | |
05aaa02d DP |
789 | irq_handler_t handler; |
790 | unsigned long flags = IRQF_SAMPLE_RANDOM; | |
3d396eb1 | 791 | |
dcd56fdb DP |
792 | if (adapter->driver_mismatch) |
793 | return -EIO; | |
794 | ||
3d396eb1 AK |
795 | if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { |
796 | err = netxen_init_firmware(adapter); | |
797 | if (err != 0) { | |
798 | printk(KERN_ERR "Failed to init firmware\n"); | |
799 | return -EIO; | |
800 | } | |
3d396eb1 AK |
801 | |
802 | /* setup all the resources for the Phantom... */ | |
803 | /* this include the descriptors for rcv, tx, and status */ | |
804 | netxen_nic_clear_stats(adapter); | |
805 | err = netxen_nic_hw_resources(adapter); | |
806 | if (err) { | |
807 | printk(KERN_ERR "Error in setting hw resources:%d\n", | |
808 | err); | |
809 | return err; | |
810 | } | |
3d396eb1 | 811 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
cb8011ad | 812 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) |
3d396eb1 | 813 | netxen_post_rx_buffers(adapter, ctx, ring); |
3d396eb1 | 814 | } |
ed25ffa1 | 815 | adapter->irq = adapter->ahw.pdev->irq; |
05aaa02d DP |
816 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) |
817 | handler = netxen_msi_intr; | |
818 | else { | |
819 | flags |= IRQF_SHARED; | |
820 | handler = netxen_intr; | |
821 | } | |
822 | err = request_irq(adapter->irq, handler, | |
823 | flags, netdev->name, adapter); | |
3d396eb1 AK |
824 | if (err) { |
825 | printk(KERN_ERR "request_irq failed with: %d\n", err); | |
ed25ffa1 | 826 | netxen_free_hw_resources(adapter); |
3d396eb1 AK |
827 | return err; |
828 | } | |
ed25ffa1 AK |
829 | |
830 | adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; | |
831 | } | |
3d396eb1 AK |
832 | /* Done here again so that even if phantom sw overwrote it, |
833 | * we set it */ | |
595e3fb8 MT |
834 | if (adapter->init_port |
835 | && adapter->init_port(adapter, adapter->portnum) != 0) { | |
836 | printk(KERN_ERR "%s: Failed to initialize port %d\n", | |
837 | netxen_nic_driver_name, adapter->portnum); | |
595e3fb8 MT |
838 | return -EIO; |
839 | } | |
7eec517c | 840 | if (adapter->macaddr_set) |
841 | adapter->macaddr_set(adapter, netdev->dev_addr); | |
595e3fb8 | 842 | |
3176ff3e | 843 | netxen_nic_set_link_parameters(adapter); |
3d396eb1 AK |
844 | |
845 | netxen_nic_set_multi(netdev); | |
ed25ffa1 | 846 | if (adapter->set_mtu) |
3176ff3e | 847 | adapter->set_mtu(adapter, netdev->mtu); |
ed25ffa1 | 848 | |
dcd56fdb | 849 | mod_timer(&adapter->watchdog_timer, jiffies); |
05aaa02d DP |
850 | |
851 | napi_enable(&adapter->napi); | |
852 | netxen_nic_enable_int(adapter); | |
853 | ||
dcd56fdb | 854 | netif_start_queue(netdev); |
3d396eb1 AK |
855 | |
856 | return 0; | |
857 | } | |
858 | ||
859 | /* | |
860 | * netxen_nic_close - Disables a network interface entry point | |
861 | */ | |
862 | static int netxen_nic_close(struct net_device *netdev) | |
863 | { | |
3176ff3e | 864 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
865 | int i, j; |
866 | struct netxen_cmd_buffer *cmd_buff; | |
867 | struct netxen_skb_frag *buffrag; | |
868 | ||
869 | netif_carrier_off(netdev); | |
870 | netif_stop_queue(netdev); | |
bea3348e | 871 | napi_disable(&adapter->napi); |
3d396eb1 | 872 | |
72b0a7a8 | 873 | if (adapter->stop_port) |
874 | adapter->stop_port(adapter); | |
875 | ||
e01872af | 876 | netxen_nic_disable_int(adapter); |
877 | ||
3176ff3e MT |
878 | cmd_buff = adapter->cmd_buf_arr; |
879 | for (i = 0; i < adapter->max_tx_desc_count; i++) { | |
880 | buffrag = cmd_buff->frag_array; | |
881 | if (buffrag->dma) { | |
882 | pci_unmap_single(adapter->pdev, buffrag->dma, | |
883 | buffrag->length, PCI_DMA_TODEVICE); | |
96acb6eb | 884 | buffrag->dma = 0ULL; |
3176ff3e MT |
885 | } |
886 | for (j = 0; j < cmd_buff->frag_count; j++) { | |
887 | buffrag++; | |
3d396eb1 | 888 | if (buffrag->dma) { |
3176ff3e | 889 | pci_unmap_page(adapter->pdev, buffrag->dma, |
4790654c | 890 | buffrag->length, |
3176ff3e | 891 | PCI_DMA_TODEVICE); |
96acb6eb | 892 | buffrag->dma = 0ULL; |
3d396eb1 | 893 | } |
3d396eb1 | 894 | } |
3176ff3e MT |
895 | /* Free the skb we received in netxen_nic_xmit_frame */ |
896 | if (cmd_buff->skb) { | |
897 | dev_kfree_skb_any(cmd_buff->skb); | |
898 | cmd_buff->skb = NULL; | |
899 | } | |
900 | cmd_buff++; | |
3d396eb1 | 901 | } |
96acb6eb DP |
902 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) { |
903 | FLUSH_SCHEDULED_WORK(); | |
904 | del_timer_sync(&adapter->watchdog_timer); | |
905 | } | |
3d396eb1 AK |
906 | |
907 | return 0; | |
908 | } | |
909 | ||
910 | static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
911 | { | |
3176ff3e | 912 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
913 | struct netxen_hardware_context *hw = &adapter->ahw; |
914 | unsigned int first_seg_len = skb->len - skb->data_len; | |
915 | struct netxen_skb_frag *buffrag; | |
916 | unsigned int i; | |
917 | ||
ba53e6b4 | 918 | u32 producer, consumer; |
3d396eb1 AK |
919 | u32 saved_producer = 0; |
920 | struct cmd_desc_type0 *hwdesc; | |
921 | int k; | |
922 | struct netxen_cmd_buffer *pbuf = NULL; | |
3d396eb1 | 923 | int frag_count; |
3d396eb1 | 924 | int no_of_desc; |
ba53e6b4 | 925 | u32 num_txd = adapter->max_tx_desc_count; |
3d396eb1 | 926 | |
3d396eb1 AK |
927 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
928 | ||
3d396eb1 AK |
929 | /* There 4 fragments per descriptor */ |
930 | no_of_desc = (frag_count + 3) >> 2; | |
cb8011ad AK |
931 | if (netdev->features & NETIF_F_TSO) { |
932 | if (skb_shinfo(skb)->gso_size > 0) { | |
933 | ||
3d396eb1 | 934 | no_of_desc++; |
ab6a5bb6 | 935 | if ((ip_hdrlen(skb) + tcp_hdrlen(skb) + |
c9bdd4b5 | 936 | sizeof(struct ethhdr)) > |
ed25ffa1 | 937 | (sizeof(struct cmd_desc_type0) - 2)) { |
cb8011ad AK |
938 | no_of_desc++; |
939 | } | |
3d396eb1 AK |
940 | } |
941 | } | |
53a01e00 | 942 | |
ba53e6b4 DP |
943 | producer = adapter->cmd_producer; |
944 | smp_mb(); | |
945 | consumer = adapter->last_cmd_consumer; | |
946 | if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) { | |
947 | netif_stop_queue(netdev); | |
948 | smp_mb(); | |
949 | return NETDEV_TX_BUSY; | |
53a01e00 | 950 | } |
3d396eb1 | 951 | |
3d396eb1 | 952 | /* Copy the descriptors into the hardware */ |
3d396eb1 AK |
953 | saved_producer = producer; |
954 | hwdesc = &hw->cmd_desc_head[producer]; | |
955 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
956 | /* Take skb->data itself */ | |
957 | pbuf = &adapter->cmd_buf_arr[producer]; | |
cb8011ad | 958 | if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) { |
a608ab9c | 959 | pbuf->mss = skb_shinfo(skb)->gso_size; |
ed33ebe4 | 960 | hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
3d396eb1 AK |
961 | } else { |
962 | pbuf->mss = 0; | |
963 | hwdesc->mss = 0; | |
964 | } | |
3d396eb1 AK |
965 | pbuf->total_length = skb->len; |
966 | pbuf->skb = skb; | |
967 | pbuf->cmd = TX_ETHER_PKT; | |
968 | pbuf->frag_count = frag_count; | |
3176ff3e | 969 | pbuf->port = adapter->portnum; |
3d396eb1 | 970 | buffrag = &pbuf->frag_array[0]; |
3176ff3e | 971 | buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len, |
3d396eb1 AK |
972 | PCI_DMA_TODEVICE); |
973 | buffrag->length = first_seg_len; | |
ed25ffa1 AK |
974 | netxen_set_cmd_desc_totallength(hwdesc, skb->len); |
975 | netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count); | |
976 | netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT); | |
3d396eb1 | 977 | |
3176ff3e | 978 | netxen_set_cmd_desc_port(hwdesc, adapter->portnum); |
6c80b18d | 979 | netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum); |
3d396eb1 AK |
980 | hwdesc->buffer1_length = cpu_to_le16(first_seg_len); |
981 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
982 | ||
983 | for (i = 1, k = 1; i < frag_count; i++, k++) { | |
984 | struct skb_frag_struct *frag; | |
985 | int len, temp_len; | |
986 | unsigned long offset; | |
987 | dma_addr_t temp_dma; | |
988 | ||
989 | /* move to next desc. if there is a need */ | |
990 | if ((i & 0x3) == 0) { | |
991 | k = 0; | |
ba53e6b4 | 992 | producer = get_next_index(producer, num_txd); |
3d396eb1 AK |
993 | hwdesc = &hw->cmd_desc_head[producer]; |
994 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
53a01e00 | 995 | pbuf = &adapter->cmd_buf_arr[producer]; |
996 | pbuf->skb = NULL; | |
3d396eb1 AK |
997 | } |
998 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
999 | len = frag->size; | |
1000 | offset = frag->page_offset; | |
1001 | ||
1002 | temp_len = len; | |
3176ff3e | 1003 | temp_dma = pci_map_page(adapter->pdev, frag->page, offset, |
3d396eb1 AK |
1004 | len, PCI_DMA_TODEVICE); |
1005 | ||
1006 | buffrag++; | |
1007 | buffrag->dma = temp_dma; | |
1008 | buffrag->length = temp_len; | |
1009 | ||
3d396eb1 AK |
1010 | switch (k) { |
1011 | case 0: | |
1012 | hwdesc->buffer1_length = cpu_to_le16(temp_len); | |
1013 | hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); | |
1014 | break; | |
1015 | case 1: | |
1016 | hwdesc->buffer2_length = cpu_to_le16(temp_len); | |
1017 | hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); | |
1018 | break; | |
1019 | case 2: | |
1020 | hwdesc->buffer3_length = cpu_to_le16(temp_len); | |
1021 | hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); | |
1022 | break; | |
1023 | case 3: | |
a608ab9c | 1024 | hwdesc->buffer4_length = cpu_to_le16(temp_len); |
3d396eb1 AK |
1025 | hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); |
1026 | break; | |
1027 | } | |
1028 | frag++; | |
1029 | } | |
ba53e6b4 | 1030 | producer = get_next_index(producer, num_txd); |
3d396eb1 AK |
1031 | |
1032 | /* might change opcode to TX_TCP_LSO */ | |
1033 | netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb); | |
1034 | ||
1035 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
1036 | * the descriptor ring | |
1037 | */ | |
ed25ffa1 AK |
1038 | if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer]) |
1039 | == TX_TCP_LSO) { | |
3d396eb1 AK |
1040 | int hdr_len, first_hdr_len, more_hdr; |
1041 | hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length; | |
ed25ffa1 AK |
1042 | if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) { |
1043 | first_hdr_len = sizeof(struct cmd_desc_type0) - 2; | |
3d396eb1 AK |
1044 | more_hdr = 1; |
1045 | } else { | |
1046 | first_hdr_len = hdr_len; | |
1047 | more_hdr = 0; | |
1048 | } | |
1049 | /* copy the MAC/IP/TCP headers to the cmd descriptor list */ | |
1050 | hwdesc = &hw->cmd_desc_head[producer]; | |
53a01e00 | 1051 | pbuf = &adapter->cmd_buf_arr[producer]; |
1052 | pbuf->skb = NULL; | |
3d396eb1 AK |
1053 | |
1054 | /* copy the first 64 bytes */ | |
ed25ffa1 | 1055 | memcpy(((void *)hwdesc) + 2, |
3d396eb1 | 1056 | (void *)(skb->data), first_hdr_len); |
ba53e6b4 | 1057 | producer = get_next_index(producer, num_txd); |
3d396eb1 AK |
1058 | |
1059 | if (more_hdr) { | |
1060 | hwdesc = &hw->cmd_desc_head[producer]; | |
53a01e00 | 1061 | pbuf = &adapter->cmd_buf_arr[producer]; |
1062 | pbuf->skb = NULL; | |
3d396eb1 AK |
1063 | /* copy the next 64 bytes - should be enough except |
1064 | * for pathological case | |
1065 | */ | |
d626f62b ACM |
1066 | skb_copy_from_linear_data_offset(skb, first_hdr_len, |
1067 | hwdesc, | |
1068 | (hdr_len - | |
1069 | first_hdr_len)); | |
ba53e6b4 | 1070 | producer = get_next_index(producer, num_txd); |
3d396eb1 AK |
1071 | } |
1072 | } | |
6c80b18d | 1073 | |
ba53e6b4 | 1074 | adapter->cmd_producer = producer; |
5dc16268 | 1075 | adapter->stats.txbytes += skb->len; |
6c80b18d | 1076 | |
ba53e6b4 | 1077 | netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer); |
3d396eb1 | 1078 | |
ba53e6b4 | 1079 | adapter->stats.xmitcalled++; |
3d396eb1 AK |
1080 | netdev->trans_start = jiffies; |
1081 | ||
3d396eb1 AK |
1082 | return NETDEV_TX_OK; |
1083 | } | |
1084 | ||
1085 | static void netxen_watchdog(unsigned long v) | |
1086 | { | |
1087 | struct netxen_adapter *adapter = (struct netxen_adapter *)v; | |
ed25ffa1 AK |
1088 | |
1089 | SCHEDULE_WORK(&adapter->watchdog_task); | |
3d396eb1 AK |
1090 | } |
1091 | ||
1092 | static void netxen_tx_timeout(struct net_device *netdev) | |
1093 | { | |
3176ff3e MT |
1094 | struct netxen_adapter *adapter = (struct netxen_adapter *) |
1095 | netdev_priv(netdev); | |
1096 | SCHEDULE_WORK(&adapter->tx_timeout_task); | |
3d396eb1 AK |
1097 | } |
1098 | ||
6d5aefb8 | 1099 | static void netxen_tx_timeout_task(struct work_struct *work) |
3d396eb1 | 1100 | { |
4790654c | 1101 | struct netxen_adapter *adapter = |
3176ff3e | 1102 | container_of(work, struct netxen_adapter, tx_timeout_task); |
3d396eb1 AK |
1103 | |
1104 | printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", | |
6c80b18d | 1105 | netxen_nic_driver_name, adapter->netdev->name); |
3d396eb1 | 1106 | |
ba53e6b4 DP |
1107 | netxen_nic_disable_int(adapter); |
1108 | napi_disable(&adapter->napi); | |
1109 | ||
6c80b18d | 1110 | adapter->netdev->trans_start = jiffies; |
ba53e6b4 DP |
1111 | |
1112 | napi_enable(&adapter->napi); | |
1113 | netxen_nic_enable_int(adapter); | |
6c80b18d | 1114 | netif_wake_queue(adapter->netdev); |
3d396eb1 AK |
1115 | } |
1116 | ||
05aaa02d DP |
1117 | static inline void |
1118 | netxen_handle_int(struct netxen_adapter *adapter) | |
3d396eb1 | 1119 | { |
2d1a3bbd | 1120 | netxen_nic_disable_int(adapter); |
05aaa02d | 1121 | napi_schedule(&adapter->napi); |
3d396eb1 AK |
1122 | } |
1123 | ||
1494a814 | 1124 | irqreturn_t netxen_intr(int irq, void *data) |
3d396eb1 | 1125 | { |
1daec86a | 1126 | struct netxen_adapter *adapter = data; |
e01872af | 1127 | u32 our_int = 0; |
3d396eb1 | 1128 | |
05aaa02d DP |
1129 | our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); |
1130 | /* not our interrupt */ | |
1131 | if ((our_int & (0x80 << adapter->portnum)) == 0) | |
1132 | return IRQ_NONE; | |
e01872af | 1133 | |
1134 | if (adapter->intr_scheme == INTR_SCHEME_PERPORT) { | |
1135 | /* claim interrupt */ | |
05aaa02d | 1136 | writel(our_int & ~((u32)(0x80 << adapter->portnum)), |
e01872af | 1137 | NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); |
e01872af | 1138 | } |
1139 | ||
05aaa02d | 1140 | netxen_handle_int(adapter); |
3d396eb1 AK |
1141 | |
1142 | return IRQ_HANDLED; | |
1143 | } | |
1144 | ||
05aaa02d DP |
1145 | irqreturn_t netxen_msi_intr(int irq, void *data) |
1146 | { | |
1147 | struct netxen_adapter *adapter = data; | |
1148 | ||
1149 | netxen_handle_int(adapter); | |
1150 | return IRQ_HANDLED; | |
1151 | } | |
1152 | ||
bea3348e | 1153 | static int netxen_nic_poll(struct napi_struct *napi, int budget) |
3d396eb1 | 1154 | { |
bea3348e | 1155 | struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi); |
05aaa02d | 1156 | int tx_complete; |
3d396eb1 | 1157 | int ctx; |
bea3348e | 1158 | int work_done; |
3d396eb1 | 1159 | |
05aaa02d | 1160 | tx_complete = netxen_process_cmd_ring(adapter); |
3d396eb1 | 1161 | |
80922fbc | 1162 | work_done = 0; |
3d396eb1 AK |
1163 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
1164 | /* | |
1165 | * Fairness issue. This will give undue weight to the | |
1166 | * receive context 0. | |
1167 | */ | |
1168 | ||
1169 | /* | |
1170 | * To avoid starvation, we give each of our receivers, | |
1171 | * a fraction of the quota. Sometimes, it might happen that we | |
1172 | * have enough quota to process every packet, but since all the | |
1173 | * packets are on one context, it gets only half of the quota, | |
1174 | * and ends up not processing it. | |
1175 | */ | |
bea3348e SH |
1176 | work_done += netxen_process_rcv_ring(adapter, ctx, |
1177 | budget / MAX_RCV_CTX); | |
3d396eb1 AK |
1178 | } |
1179 | ||
05aaa02d DP |
1180 | if ((work_done < budget) && tx_complete) { |
1181 | netif_rx_complete(adapter->netdev, &adapter->napi); | |
3d396eb1 AK |
1182 | netxen_nic_enable_int(adapter); |
1183 | } | |
1184 | ||
bea3348e | 1185 | return work_done; |
3d396eb1 AK |
1186 | } |
1187 | ||
1188 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1189 | static void netxen_nic_poll_controller(struct net_device *netdev) | |
1190 | { | |
3176ff3e | 1191 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 | 1192 | disable_irq(adapter->irq); |
1494a814 | 1193 | netxen_intr(adapter->irq, adapter); |
3d396eb1 AK |
1194 | enable_irq(adapter->irq); |
1195 | } | |
1196 | #endif | |
3d396eb1 AK |
1197 | |
1198 | static struct pci_driver netxen_driver = { | |
1199 | .name = netxen_nic_driver_name, | |
1200 | .id_table = netxen_pci_tbl, | |
1201 | .probe = netxen_nic_probe, | |
1202 | .remove = __devexit_p(netxen_nic_remove) | |
1203 | }; | |
1204 | ||
1205 | /* Driver Registration on NetXen card */ | |
1206 | ||
1207 | static int __init netxen_init_module(void) | |
1208 | { | |
79ea13ce | 1209 | if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL) |
ed25ffa1 AK |
1210 | return -ENOMEM; |
1211 | ||
184231bd | 1212 | return pci_register_driver(&netxen_driver); |
3d396eb1 AK |
1213 | } |
1214 | ||
1215 | module_init(netxen_init_module); | |
1216 | ||
1217 | static void __exit netxen_exit_module(void) | |
1218 | { | |
1219 | /* | |
1220 | * Wait for some time to allow the dma to drain, if any. | |
1221 | */ | |
96acb6eb | 1222 | msleep(100); |
3d396eb1 | 1223 | pci_unregister_driver(&netxen_driver); |
9de06610 | 1224 | destroy_workqueue(netxen_workq); |
3d396eb1 AK |
1225 | } |
1226 | ||
1227 | module_exit(netxen_exit_module); |