]>
Commit | Line | Data |
---|---|---|
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 JG |
41 | #include <linux/dma-mapping.h> |
42 | #include <linux/vmalloc.h> | |
c9bdd4b5 | 43 | #include <net/ip.h> |
1494a814 | 44 | |
3d396eb1 AK |
45 | MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver"); |
46 | MODULE_LICENSE("GPL"); | |
47 | MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); | |
48 | ||
ed25ffa1 | 49 | char netxen_nic_driver_name[] = "netxen-nic"; |
3d396eb1 | 50 | static char netxen_nic_driver_string[] = "NetXen Network Driver version " |
cb8011ad | 51 | NETXEN_NIC_LINUX_VERSIONID; |
3d396eb1 AK |
52 | |
53 | #define NETXEN_NETDEV_WEIGHT 120 | |
54 | #define NETXEN_ADAPTER_UP_MAGIC 777 | |
cb8011ad | 55 | #define NETXEN_NIC_PEG_TUNE 0 |
3d396eb1 | 56 | |
ed25ffa1 AK |
57 | u8 nx_p2_id = NX_P2_C0; |
58 | ||
59 | #define DMA_32BIT_MASK 0x00000000ffffffffULL | |
60 | #define DMA_35BIT_MASK 0x00000007ffffffffULL | |
61 | ||
3d396eb1 AK |
62 | /* Local functions to NetXen NIC driver */ |
63 | static int __devinit netxen_nic_probe(struct pci_dev *pdev, | |
64 | const struct pci_device_id *ent); | |
65 | static void __devexit netxen_nic_remove(struct pci_dev *pdev); | |
66 | static int netxen_nic_open(struct net_device *netdev); | |
67 | static int netxen_nic_close(struct net_device *netdev); | |
68 | static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *); | |
69 | static void netxen_tx_timeout(struct net_device *netdev); | |
6d5aefb8 | 70 | static void netxen_tx_timeout_task(struct work_struct *work); |
3d396eb1 AK |
71 | static void netxen_watchdog(unsigned long); |
72 | static int netxen_handle_int(struct netxen_adapter *, struct net_device *); | |
3d396eb1 AK |
73 | static int netxen_nic_poll(struct net_device *dev, int *budget); |
74 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
75 | static void netxen_nic_poll_controller(struct net_device *netdev); | |
76 | #endif | |
1494a814 | 77 | static irqreturn_t netxen_intr(int irq, void *data); |
3d396eb1 AK |
78 | |
79 | /* PCI Device ID Table */ | |
80 | static struct pci_device_id netxen_pci_tbl[] __devinitdata = { | |
81 | {PCI_DEVICE(0x4040, 0x0001)}, | |
82 | {PCI_DEVICE(0x4040, 0x0002)}, | |
83 | {PCI_DEVICE(0x4040, 0x0003)}, | |
84 | {PCI_DEVICE(0x4040, 0x0004)}, | |
85 | {PCI_DEVICE(0x4040, 0x0005)}, | |
0d390734 AK |
86 | {PCI_DEVICE(0x4040, 0x0024)}, |
87 | {PCI_DEVICE(0x4040, 0x0025)}, | |
3d396eb1 AK |
88 | {0,} |
89 | }; | |
90 | ||
91 | MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); | |
92 | ||
ed25ffa1 AK |
93 | struct workqueue_struct *netxen_workq; |
94 | static void netxen_watchdog(unsigned long); | |
95 | ||
3176ff3e MT |
96 | static inline void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter, |
97 | uint32_t crb_producer) | |
98 | { | |
99 | switch (adapter->portnum) { | |
100 | case 0: | |
101 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
102 | (adapter, CRB_CMD_PRODUCER_OFFSET)); | |
103 | return; | |
104 | case 1: | |
105 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
106 | (adapter, CRB_CMD_PRODUCER_OFFSET_1)); | |
107 | return; | |
108 | case 2: | |
109 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
110 | (adapter, CRB_CMD_PRODUCER_OFFSET_2)); | |
111 | return; | |
112 | case 3: | |
113 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
114 | (adapter, CRB_CMD_PRODUCER_OFFSET_3)); | |
115 | return; | |
116 | default: | |
117 | printk(KERN_WARNING "We tried to update " | |
118 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
119 | "PCI function id %d\n", | |
120 | adapter->portnum); | |
121 | return; | |
122 | } | |
123 | } | |
124 | ||
125 | static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, | |
126 | u32 crb_consumer) | |
127 | { | |
128 | switch (adapter->portnum) { | |
129 | case 0: | |
130 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
131 | (adapter, CRB_CMD_CONSUMER_OFFSET)); | |
132 | return; | |
133 | case 1: | |
134 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
135 | (adapter, CRB_CMD_CONSUMER_OFFSET_1)); | |
136 | return; | |
137 | case 2: | |
138 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
139 | (adapter, CRB_CMD_CONSUMER_OFFSET_2)); | |
140 | return; | |
141 | case 3: | |
142 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
143 | (adapter, CRB_CMD_CONSUMER_OFFSET_3)); | |
144 | return; | |
145 | default: | |
146 | printk(KERN_WARNING "We tried to update " | |
147 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
148 | "PCI function id %d\n", | |
149 | adapter->portnum); | |
150 | return; | |
151 | } | |
152 | } | |
153 | ||
154 | #define ADAPTER_LIST_SIZE 12 | |
155 | int netxen_cards_found; | |
156 | ||
3d396eb1 AK |
157 | /* |
158 | * netxen_nic_probe() | |
159 | * | |
160 | * The Linux system will invoke this after identifying the vendor ID and | |
161 | * device Id in the pci_tbl supported by this module. | |
162 | * | |
163 | * A quad port card has one operational PCI config space, (function 0), | |
164 | * which is used to access all four ports. | |
165 | * | |
166 | * This routine will initialize the adapter, and setup the global parameters | |
167 | * along with the port's specific structure. | |
168 | */ | |
169 | static int __devinit | |
170 | netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
171 | { | |
172 | struct net_device *netdev = NULL; | |
173 | struct netxen_adapter *adapter = NULL; | |
ed25ffa1 AK |
174 | void __iomem *mem_ptr0 = NULL; |
175 | void __iomem *mem_ptr1 = NULL; | |
176 | void __iomem *mem_ptr2 = NULL; | |
cb8011ad | 177 | |
a608ab9c | 178 | u8 __iomem *db_ptr = NULL; |
ed25ffa1 | 179 | unsigned long mem_base, mem_len, db_base, db_len; |
3176ff3e | 180 | int pci_using_dac, i = 0, err; |
3d396eb1 AK |
181 | int ring; |
182 | struct netxen_recv_context *recv_ctx = NULL; | |
183 | struct netxen_rcv_desc_ctx *rcv_desc = NULL; | |
184 | struct netxen_cmd_buffer *cmd_buf_arr = NULL; | |
185 | u64 mac_addr[FLASH_NUM_PORTS + 1]; | |
3176ff3e MT |
186 | static int valid_mac = 0; |
187 | static int netxen_probe_flag; | |
188 | int pci_func_id = PCI_FUNC(pdev->devfn); | |
3d396eb1 | 189 | |
cb8011ad | 190 | printk(KERN_INFO "%s \n", netxen_nic_driver_string); |
3176ff3e MT |
191 | if (pdev->class != 0x020000) { |
192 | printk(KERN_ERR"NetXen function %d, class %x will not" | |
193 | "be enabled.\n",pci_func_id, pdev->class); | |
ed25ffa1 AK |
194 | return -ENODEV; |
195 | } | |
3d396eb1 AK |
196 | if ((err = pci_enable_device(pdev))) |
197 | return err; | |
198 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
199 | err = -ENODEV; | |
200 | goto err_out_disable_pdev; | |
201 | } | |
202 | ||
203 | if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) | |
204 | goto err_out_disable_pdev; | |
205 | ||
206 | pci_set_master(pdev); | |
ed25ffa1 AK |
207 | pci_read_config_byte(pdev, PCI_REVISION_ID, &nx_p2_id); |
208 | if (nx_p2_id == NX_P2_C1 && | |
209 | (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) && | |
210 | (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) { | |
3d396eb1 | 211 | pci_using_dac = 1; |
ed25ffa1 | 212 | } else { |
3d396eb1 AK |
213 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
214 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) | |
215 | goto err_out_free_res; | |
216 | ||
217 | pci_using_dac = 0; | |
218 | } | |
219 | ||
3176ff3e MT |
220 | |
221 | netdev = alloc_etherdev(sizeof(struct netxen_adapter)); | |
222 | if(!netdev) { | |
223 | printk(KERN_ERR"%s: Failed to allocate memory for the " | |
224 | "device block.Check system memory resource" | |
225 | " usage.\n", netxen_nic_driver_name); | |
226 | goto err_out_free_res; | |
227 | } | |
228 | ||
229 | SET_MODULE_OWNER(netdev); | |
230 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
231 | ||
232 | adapter = netdev->priv; | |
233 | memset(adapter, 0 , sizeof(struct netxen_adapter)); | |
234 | ||
235 | adapter->ahw.pdev = pdev; | |
13ba9c77 MT |
236 | adapter->ahw.pci_func = pci_func_id; |
237 | ||
3d396eb1 AK |
238 | /* remap phys address */ |
239 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
240 | mem_len = pci_resource_len(pdev, 0); | |
241 | ||
242 | /* 128 Meg of memory */ | |
cb8011ad AK |
243 | mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); |
244 | mem_ptr1 = | |
245 | ioremap(mem_base + SECOND_PAGE_GROUP_START, SECOND_PAGE_GROUP_SIZE); | |
246 | mem_ptr2 = | |
247 | ioremap(mem_base + THIRD_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); | |
248 | ||
249 | if ((mem_ptr0 == 0UL) || (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) { | |
ed25ffa1 | 250 | DPRINTK(ERR, |
cb8011ad AK |
251 | "Cannot remap adapter memory aborting.:" |
252 | "0 -> %p, 1 -> %p, 2 -> %p\n", | |
253 | mem_ptr0, mem_ptr1, mem_ptr2); | |
254 | ||
3d396eb1 | 255 | err = -EIO; |
ed25ffa1 AK |
256 | goto err_out_iounmap; |
257 | } | |
258 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ | |
259 | db_len = pci_resource_len(pdev, 4); | |
260 | ||
261 | if (db_len == 0) { | |
262 | printk(KERN_ERR "%s: doorbell is disabled\n", | |
263 | netxen_nic_driver_name); | |
264 | err = -EIO; | |
265 | goto err_out_iounmap; | |
266 | } | |
267 | DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base, | |
268 | db_len); | |
269 | ||
270 | db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); | |
a608ab9c | 271 | if (!db_ptr) { |
ed25ffa1 AK |
272 | printk(KERN_ERR "%s: Failed to allocate doorbell map.", |
273 | netxen_nic_driver_name); | |
274 | err = -EIO; | |
275 | goto err_out_iounmap; | |
3d396eb1 | 276 | } |
ed25ffa1 | 277 | DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr); |
3d396eb1 | 278 | |
3d396eb1 | 279 | adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS; |
13ba9c77 MT |
280 | if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) || |
281 | (adapter->ahw.boardcfg.board_type == | |
282 | NETXEN_BRDTYPE_P2_SB31_2G)) | |
283 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; | |
284 | else | |
285 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS; | |
3d396eb1 | 286 | adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; |
ed25ffa1 | 287 | adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; |
3d396eb1 AK |
288 | |
289 | pci_set_drvdata(pdev, adapter); | |
290 | ||
3176ff3e MT |
291 | adapter->netdev = netdev; |
292 | adapter->pdev = pdev; | |
293 | adapter->portnum = pci_func_id; | |
294 | ||
295 | netdev->open = netxen_nic_open; | |
296 | netdev->stop = netxen_nic_close; | |
297 | netdev->hard_start_xmit = netxen_nic_xmit_frame; | |
298 | netdev->set_multicast_list = netxen_nic_set_multi; | |
299 | netdev->set_mac_address = netxen_nic_set_mac; | |
300 | netdev->change_mtu = netxen_nic_change_mtu; | |
301 | netdev->tx_timeout = netxen_tx_timeout; | |
302 | netdev->watchdog_timeo = HZ; | |
303 | ||
304 | netxen_nic_change_mtu(netdev, netdev->mtu); | |
305 | ||
306 | SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); | |
307 | netdev->poll = netxen_nic_poll; | |
308 | netdev->weight = NETXEN_NETDEV_WEIGHT; | |
309 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
310 | netdev->poll_controller = netxen_nic_poll_controller; | |
311 | #endif | |
312 | /* ScatterGather support */ | |
313 | netdev->features = NETIF_F_SG; | |
314 | netdev->features |= NETIF_F_IP_CSUM; | |
315 | netdev->features |= NETIF_F_TSO; | |
316 | ||
317 | if (pci_using_dac) | |
318 | netdev->features |= NETIF_F_HIGHDMA; | |
319 | ||
320 | if (pci_enable_msi(pdev)) { | |
321 | adapter->flags &= ~NETXEN_NIC_MSI_ENABLED; | |
322 | printk(KERN_WARNING "%s: unable to allocate MSI interrupt" | |
323 | " error\n", netxen_nic_driver_name); | |
324 | } else | |
325 | adapter->flags |= NETXEN_NIC_MSI_ENABLED; | |
326 | ||
3d396eb1 AK |
327 | cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE); |
328 | if (cmd_buf_arr == NULL) { | |
ed25ffa1 AK |
329 | printk(KERN_ERR |
330 | "%s: Could not allocate cmd_buf_arr memory:%d\n", | |
331 | netxen_nic_driver_name, (int)TX_RINGSIZE); | |
3d396eb1 AK |
332 | err = -ENOMEM; |
333 | goto err_out_free_adapter; | |
334 | } | |
335 | memset(cmd_buf_arr, 0, TX_RINGSIZE); | |
336 | ||
337 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
338 | recv_ctx = &adapter->recv_ctx[i]; | |
339 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
340 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
341 | switch (RCV_DESC_TYPE(ring)) { | |
342 | case RCV_DESC_NORMAL: | |
343 | rcv_desc->max_rx_desc_count = | |
344 | adapter->max_rx_desc_count; | |
345 | rcv_desc->flags = RCV_DESC_NORMAL; | |
346 | rcv_desc->dma_size = RX_DMA_MAP_LEN; | |
347 | rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH; | |
348 | break; | |
349 | ||
350 | case RCV_DESC_JUMBO: | |
351 | rcv_desc->max_rx_desc_count = | |
352 | adapter->max_jumbo_rx_desc_count; | |
353 | rcv_desc->flags = RCV_DESC_JUMBO; | |
354 | rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN; | |
355 | rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH; | |
356 | break; | |
357 | ||
ed25ffa1 AK |
358 | case RCV_RING_LRO: |
359 | rcv_desc->max_rx_desc_count = | |
360 | adapter->max_lro_rx_desc_count; | |
361 | rcv_desc->flags = RCV_DESC_LRO; | |
362 | rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN; | |
363 | rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH; | |
364 | break; | |
365 | ||
3d396eb1 AK |
366 | } |
367 | rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *) | |
368 | vmalloc(RCV_BUFFSIZE); | |
369 | ||
370 | if (rcv_desc->rx_buf_arr == NULL) { | |
ed25ffa1 AK |
371 | printk(KERN_ERR "%s: Could not allocate" |
372 | "rcv_desc->rx_buf_arr memory:%d\n", | |
373 | netxen_nic_driver_name, | |
374 | (int)RCV_BUFFSIZE); | |
3d396eb1 AK |
375 | err = -ENOMEM; |
376 | goto err_out_free_rx_buffer; | |
377 | } | |
378 | memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE); | |
379 | } | |
380 | ||
381 | } | |
382 | ||
3d396eb1 | 383 | adapter->cmd_buf_arr = cmd_buf_arr; |
cb8011ad AK |
384 | adapter->ahw.pci_base0 = mem_ptr0; |
385 | adapter->ahw.pci_base1 = mem_ptr1; | |
386 | adapter->ahw.pci_base2 = mem_ptr2; | |
ed25ffa1 AK |
387 | adapter->ahw.db_base = db_ptr; |
388 | adapter->ahw.db_len = db_len; | |
3d396eb1 AK |
389 | spin_lock_init(&adapter->tx_lock); |
390 | spin_lock_init(&adapter->lock); | |
ed25ffa1 | 391 | netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */ |
13ba9c77 MT |
392 | /* Mezz cards have PCI function 0,2,3 enabled */ |
393 | if (adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ) | |
394 | if (pci_func_id >= 2) | |
395 | adapter->portnum = pci_func_id - 2; | |
396 | ||
cb8011ad | 397 | #ifdef CONFIG_IA64 |
13ba9c77 | 398 | if(adapter->portnum == 0) { |
3176ff3e MT |
399 | netxen_pinit_from_rom(adapter, 0); |
400 | udelay(500); | |
401 | netxen_load_firmware(adapter); | |
402 | } | |
cb8011ad AK |
403 | #endif |
404 | ||
3d396eb1 AK |
405 | /* |
406 | * Set the CRB window to invalid. If any register in window 0 is | |
407 | * accessed it should set the window to 0 and then reset it to 1. | |
408 | */ | |
409 | adapter->curr_window = 255; | |
410 | /* | |
411 | * Adapter in our case is quad port so initialize it before | |
412 | * initializing the ports | |
413 | */ | |
3d396eb1 | 414 | |
13ba9c77 MT |
415 | /* initialize the adapter */ |
416 | netxen_initialize_adapter_hw(adapter); | |
3176ff3e | 417 | |
3d396eb1 AK |
418 | netxen_initialize_adapter_ops(adapter); |
419 | ||
420 | init_timer(&adapter->watchdog_timer); | |
421 | adapter->ahw.xg_linkup = 0; | |
422 | adapter->watchdog_timer.function = &netxen_watchdog; | |
423 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
6d5aefb8 | 424 | INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task); |
3d396eb1 AK |
425 | adapter->ahw.pdev = pdev; |
426 | adapter->proc_cmd_buf_counter = 0; | |
ed25ffa1 | 427 | adapter->ahw.revision_id = nx_p2_id; |
3d396eb1 | 428 | |
3176ff3e MT |
429 | netxen_nic_update_cmd_producer(adapter, 0); |
430 | netxen_nic_update_cmd_consumer(adapter, 0); | |
3d396eb1 AK |
431 | |
432 | if (netxen_is_flash_supported(adapter) == 0 && | |
433 | netxen_get_flash_mac_addr(adapter, mac_addr) == 0) | |
434 | valid_mac = 1; | |
435 | else | |
436 | valid_mac = 0; | |
437 | ||
3176ff3e | 438 | if (valid_mac) { |
13ba9c77 | 439 | unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum]; |
3176ff3e MT |
440 | netdev->dev_addr[0] = *(p + 5); |
441 | netdev->dev_addr[1] = *(p + 4); | |
442 | netdev->dev_addr[2] = *(p + 3); | |
443 | netdev->dev_addr[3] = *(p + 2); | |
444 | netdev->dev_addr[4] = *(p + 1); | |
445 | netdev->dev_addr[5] = *(p + 0); | |
446 | ||
447 | memcpy(netdev->perm_addr, netdev->dev_addr, | |
448 | netdev->addr_len); | |
449 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
450 | printk(KERN_ERR "%s: Bad MAC address " | |
451 | "%02x:%02x:%02x:%02x:%02x:%02x.\n", | |
452 | netxen_nic_driver_name, | |
453 | netdev->dev_addr[0], | |
454 | netdev->dev_addr[1], | |
455 | netdev->dev_addr[2], | |
456 | netdev->dev_addr[3], | |
457 | netdev->dev_addr[4], | |
458 | netdev->dev_addr[5]); | |
459 | } else { | |
460 | if (adapter->macaddr_set) | |
461 | adapter->macaddr_set(adapter, | |
462 | netdev->dev_addr); | |
463 | } | |
464 | } | |
465 | ||
cb8011ad AK |
466 | /* |
467 | * Initialize all the CRB registers here. | |
468 | */ | |
469 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_PRODUCER_OFFSET)); | |
470 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_CONSUMER_OFFSET)); | |
471 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO)); | |
472 | ||
ed25ffa1 | 473 | /* do this before waking up pegs so that we have valid dummy dma addr */ |
13ba9c77 MT |
474 | if (adapter->portnum == 0) |
475 | err = netxen_initialize_adapter_offload(adapter); | |
3176ff3e | 476 | if (err) |
ed25ffa1 | 477 | goto err_out_free_dev; |
3d396eb1 | 478 | |
3176ff3e MT |
479 | if (netxen_probe_flag == 0) { |
480 | /* Unlock the HW, prompting the boot sequence */ | |
481 | writel(1, | |
482 | NETXEN_CRB_NORMALIZE(adapter, | |
483 | NETXEN_ROMUSB_GLB_PEGTUNE_DONE)); | |
484 | /* Handshake with the card before we register the devices. */ | |
485 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
486 | } | |
3d396eb1 | 487 | |
3176ff3e MT |
488 | if(netxen_probe_flag == 0) { |
489 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)); | |
490 | netxen_pinit_from_rom(adapter, 0); | |
491 | udelay(500); | |
492 | netxen_load_firmware(adapter); | |
493 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
3d396eb1 | 494 | } |
3d396eb1 AK |
495 | /* |
496 | * delay a while to ensure that the Pegs are up & running. | |
497 | * Otherwise, we might see some flaky behaviour. | |
498 | */ | |
499 | udelay(100); | |
3176ff3e | 500 | INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task); |
13ba9c77 | 501 | netxen_nic_erase_pxe(adapter); |
3176ff3e MT |
502 | netif_carrier_off(netdev); |
503 | netif_stop_queue(netdev); | |
504 | ||
505 | if((err = register_netdev(netdev))) | |
506 | DPRINTK(1, ERR, "register_netdev failed port #%d" | |
507 | " aborting\n", i+1); | |
3d396eb1 AK |
508 | |
509 | switch (adapter->ahw.board_type) { | |
3176ff3e MT |
510 | case NETXEN_NIC_GBE: |
511 | printk(KERN_INFO "%s: QUAD GbE board initialized\n", | |
512 | netxen_nic_driver_name); | |
513 | break; | |
3d396eb1 | 514 | |
3176ff3e MT |
515 | case NETXEN_NIC_XGBE: |
516 | printk(KERN_INFO "%s: XGbE board initialized\n", | |
517 | netxen_nic_driver_name); | |
518 | break; | |
3d396eb1 AK |
519 | } |
520 | ||
521 | adapter->driver_mismatch = 0; | |
3176ff3e MT |
522 | if(netxen_probe_flag == 0) |
523 | netxen_probe_flag ++; | |
3d396eb1 AK |
524 | |
525 | return 0; | |
526 | ||
527 | err_out_free_dev: | |
528 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
529 | pci_disable_msi(pdev); | |
3176ff3e MT |
530 | |
531 | unregister_netdev(adapter->netdev); | |
532 | free_netdev(adapter->netdev); | |
3d396eb1 | 533 | |
ed25ffa1 AK |
534 | netxen_free_adapter_offload(adapter); |
535 | ||
3d396eb1 AK |
536 | err_out_free_rx_buffer: |
537 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
538 | recv_ctx = &adapter->recv_ctx[i]; | |
539 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
540 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
541 | if (rcv_desc->rx_buf_arr != NULL) { | |
542 | vfree(rcv_desc->rx_buf_arr); | |
543 | rcv_desc->rx_buf_arr = NULL; | |
544 | } | |
545 | } | |
546 | } | |
3d396eb1 AK |
547 | vfree(cmd_buf_arr); |
548 | ||
3d396eb1 AK |
549 | err_out_free_adapter: |
550 | pci_set_drvdata(pdev, NULL); | |
551 | kfree(adapter); | |
552 | ||
ed25ffa1 AK |
553 | if (db_ptr) |
554 | iounmap(db_ptr); | |
555 | ||
3d396eb1 | 556 | err_out_iounmap: |
ed25ffa1 AK |
557 | if (mem_ptr0) |
558 | iounmap(mem_ptr0); | |
559 | if (mem_ptr1) | |
560 | iounmap(mem_ptr1); | |
561 | if (mem_ptr2) | |
562 | iounmap(mem_ptr2); | |
cb8011ad | 563 | |
3d396eb1 AK |
564 | err_out_free_res: |
565 | pci_release_regions(pdev); | |
566 | err_out_disable_pdev: | |
567 | pci_disable_device(pdev); | |
568 | return err; | |
569 | } | |
570 | ||
571 | static void __devexit netxen_nic_remove(struct pci_dev *pdev) | |
572 | { | |
573 | struct netxen_adapter *adapter; | |
3176ff3e | 574 | struct net_device *netdev; |
3d396eb1 AK |
575 | struct netxen_rx_buffer *buffer; |
576 | struct netxen_recv_context *recv_ctx; | |
577 | struct netxen_rcv_desc_ctx *rcv_desc; | |
578 | int i; | |
579 | int ctxid, ring; | |
580 | ||
13ba9c77 MT |
581 | adapter = pci_get_drvdata(pdev); |
582 | netdev = adapter->netdev; | |
3d396eb1 AK |
583 | if (adapter == NULL) |
584 | return; | |
585 | ||
3176ff3e MT |
586 | if (adapter->stop_port) |
587 | adapter->stop_port(adapter); | |
588 | ||
b1adf031 AK |
589 | if (adapter->irq) |
590 | free_irq(adapter->irq, adapter); | |
3d396eb1 | 591 | /* leave the hw in the same state as reboot */ |
b0d541db | 592 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)); |
e0e20a1a | 593 | netxen_pinit_from_rom(adapter, 0); |
3d396eb1 | 594 | netxen_load_firmware(adapter); |
ed25ffa1 | 595 | netxen_free_adapter_offload(adapter); |
3d396eb1 | 596 | |
3176ff3e MT |
597 | udelay(500); |
598 | unregister_netdev(netdev); | |
599 | free_netdev(netdev); | |
3d396eb1 AK |
600 | |
601 | if ((adapter->flags & NETXEN_NIC_MSI_ENABLED)) | |
602 | pci_disable_msi(pdev); | |
3d396eb1 AK |
603 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) |
604 | netxen_free_hw_resources(adapter); | |
605 | ||
ed25ffa1 | 606 | iounmap(adapter->ahw.db_base); |
cb8011ad AK |
607 | iounmap(adapter->ahw.pci_base0); |
608 | iounmap(adapter->ahw.pci_base1); | |
609 | iounmap(adapter->ahw.pci_base2); | |
3d396eb1 AK |
610 | |
611 | pci_release_regions(pdev); | |
612 | pci_disable_device(pdev); | |
e0e20a1a | 613 | pci_set_drvdata(pdev, NULL); |
3d396eb1 AK |
614 | |
615 | for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) { | |
616 | recv_ctx = &adapter->recv_ctx[ctxid]; | |
617 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
618 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
619 | for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) { | |
620 | buffer = &(rcv_desc->rx_buf_arr[i]); | |
621 | if (buffer->state == NETXEN_BUFFER_FREE) | |
622 | continue; | |
623 | pci_unmap_single(pdev, buffer->dma, | |
624 | rcv_desc->dma_size, | |
625 | PCI_DMA_FROMDEVICE); | |
626 | if (buffer->skb != NULL) | |
627 | dev_kfree_skb_any(buffer->skb); | |
628 | } | |
629 | vfree(rcv_desc->rx_buf_arr); | |
630 | } | |
631 | } | |
632 | ||
633 | vfree(adapter->cmd_buf_arr); | |
3d396eb1 AK |
634 | kfree(adapter); |
635 | } | |
636 | ||
637 | /* | |
638 | * Called when a network interface is made active | |
639 | * @returns 0 on success, negative value on failure | |
640 | */ | |
641 | static int netxen_nic_open(struct net_device *netdev) | |
642 | { | |
3176ff3e | 643 | struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv; |
3d396eb1 AK |
644 | int err = 0; |
645 | int ctx, ring; | |
646 | ||
647 | if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { | |
648 | err = netxen_init_firmware(adapter); | |
649 | if (err != 0) { | |
650 | printk(KERN_ERR "Failed to init firmware\n"); | |
651 | return -EIO; | |
652 | } | |
653 | netxen_nic_flash_print(adapter); | |
ed25ffa1 AK |
654 | if (adapter->init_niu) |
655 | adapter->init_niu(adapter); | |
3d396eb1 AK |
656 | |
657 | /* setup all the resources for the Phantom... */ | |
658 | /* this include the descriptors for rcv, tx, and status */ | |
659 | netxen_nic_clear_stats(adapter); | |
660 | err = netxen_nic_hw_resources(adapter); | |
661 | if (err) { | |
662 | printk(KERN_ERR "Error in setting hw resources:%d\n", | |
663 | err); | |
664 | return err; | |
665 | } | |
80922fbc | 666 | if (adapter->init_port |
3176ff3e | 667 | && adapter->init_port(adapter, adapter->portnum) != 0) { |
3d396eb1 | 668 | printk(KERN_ERR "%s: Failed to initialize port %d\n", |
3176ff3e | 669 | netxen_nic_driver_name, adapter->portnum); |
3d396eb1 AK |
670 | netxen_free_hw_resources(adapter); |
671 | return -EIO; | |
672 | } | |
3d396eb1 | 673 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
cb8011ad | 674 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) |
3d396eb1 | 675 | netxen_post_rx_buffers(adapter, ctx, ring); |
3d396eb1 | 676 | } |
ed25ffa1 | 677 | adapter->irq = adapter->ahw.pdev->irq; |
3d396eb1 | 678 | err = request_irq(adapter->ahw.pdev->irq, &netxen_intr, |
38515e90 TG |
679 | IRQF_SHARED | IRQF_SAMPLE_RANDOM, |
680 | netdev->name, adapter); | |
3d396eb1 AK |
681 | if (err) { |
682 | printk(KERN_ERR "request_irq failed with: %d\n", err); | |
ed25ffa1 | 683 | netxen_free_hw_resources(adapter); |
3d396eb1 AK |
684 | return err; |
685 | } | |
ed25ffa1 AK |
686 | |
687 | adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; | |
688 | } | |
3176ff3e MT |
689 | if (!adapter->driver_mismatch) |
690 | mod_timer(&adapter->watchdog_timer, jiffies); | |
3d396eb1 | 691 | |
3176ff3e | 692 | netxen_nic_enable_int(adapter); |
3d396eb1 AK |
693 | |
694 | /* Done here again so that even if phantom sw overwrote it, | |
695 | * we set it */ | |
80922fbc | 696 | if (adapter->macaddr_set) |
3176ff3e MT |
697 | adapter->macaddr_set(adapter, netdev->dev_addr); |
698 | netxen_nic_set_link_parameters(adapter); | |
3d396eb1 AK |
699 | |
700 | netxen_nic_set_multi(netdev); | |
ed25ffa1 | 701 | if (adapter->set_mtu) |
3176ff3e | 702 | adapter->set_mtu(adapter, netdev->mtu); |
ed25ffa1 | 703 | |
3d396eb1 AK |
704 | if (!adapter->driver_mismatch) |
705 | netif_start_queue(netdev); | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
710 | /* | |
711 | * netxen_nic_close - Disables a network interface entry point | |
712 | */ | |
713 | static int netxen_nic_close(struct net_device *netdev) | |
714 | { | |
3176ff3e | 715 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
716 | int i, j; |
717 | struct netxen_cmd_buffer *cmd_buff; | |
718 | struct netxen_skb_frag *buffrag; | |
719 | ||
720 | netif_carrier_off(netdev); | |
721 | netif_stop_queue(netdev); | |
722 | ||
3176ff3e MT |
723 | netxen_nic_disable_int(adapter); |
724 | if (adapter->irq) | |
725 | free_irq(adapter->irq, adapter); | |
726 | ||
727 | cmd_buff = adapter->cmd_buf_arr; | |
728 | for (i = 0; i < adapter->max_tx_desc_count; i++) { | |
729 | buffrag = cmd_buff->frag_array; | |
730 | if (buffrag->dma) { | |
731 | pci_unmap_single(adapter->pdev, buffrag->dma, | |
732 | buffrag->length, PCI_DMA_TODEVICE); | |
733 | buffrag->dma = (u64) NULL; | |
734 | } | |
735 | for (j = 0; j < cmd_buff->frag_count; j++) { | |
736 | buffrag++; | |
3d396eb1 | 737 | if (buffrag->dma) { |
3176ff3e MT |
738 | pci_unmap_page(adapter->pdev, buffrag->dma, |
739 | buffrag->length, | |
740 | PCI_DMA_TODEVICE); | |
3d396eb1 AK |
741 | buffrag->dma = (u64) NULL; |
742 | } | |
3d396eb1 | 743 | } |
3176ff3e MT |
744 | /* Free the skb we received in netxen_nic_xmit_frame */ |
745 | if (cmd_buff->skb) { | |
746 | dev_kfree_skb_any(cmd_buff->skb); | |
747 | cmd_buff->skb = NULL; | |
748 | } | |
749 | cmd_buff++; | |
3d396eb1 | 750 | } |
3176ff3e MT |
751 | FLUSH_SCHEDULED_WORK(); |
752 | del_timer_sync(&adapter->watchdog_timer); | |
3d396eb1 AK |
753 | |
754 | return 0; | |
755 | } | |
756 | ||
757 | static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
758 | { | |
3176ff3e | 759 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
760 | struct netxen_hardware_context *hw = &adapter->ahw; |
761 | unsigned int first_seg_len = skb->len - skb->data_len; | |
762 | struct netxen_skb_frag *buffrag; | |
763 | unsigned int i; | |
764 | ||
765 | u32 producer = 0; | |
766 | u32 saved_producer = 0; | |
767 | struct cmd_desc_type0 *hwdesc; | |
768 | int k; | |
769 | struct netxen_cmd_buffer *pbuf = NULL; | |
3d396eb1 AK |
770 | static int dropped_packet = 0; |
771 | int frag_count; | |
772 | u32 local_producer = 0; | |
773 | u32 max_tx_desc_count = 0; | |
774 | u32 last_cmd_consumer = 0; | |
775 | int no_of_desc; | |
776 | ||
3176ff3e | 777 | adapter->stats.xmitcalled++; |
3d396eb1 AK |
778 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
779 | ||
780 | if (unlikely(skb->len <= 0)) { | |
781 | dev_kfree_skb_any(skb); | |
3176ff3e | 782 | adapter->stats.badskblen++; |
3d396eb1 AK |
783 | return NETDEV_TX_OK; |
784 | } | |
785 | ||
786 | if (frag_count > MAX_BUFFERS_PER_CMD) { | |
787 | printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)" | |
788 | "too large, can handle only %d frags\n", | |
789 | netxen_nic_driver_name, netdev->name, | |
790 | frag_count, MAX_BUFFERS_PER_CMD); | |
3176ff3e | 791 | adapter->stats.txdropped++; |
3d396eb1 AK |
792 | if ((++dropped_packet & 0xff) == 0xff) |
793 | printk("%s: %s droppped packets = %d\n", | |
794 | netxen_nic_driver_name, netdev->name, | |
795 | dropped_packet); | |
796 | ||
797 | return NETDEV_TX_OK; | |
798 | } | |
799 | ||
800 | /* | |
801 | * Everything is set up. Now, we just need to transmit it out. | |
802 | * Note that we have to copy the contents of buffer over to | |
803 | * right place. Later on, this can be optimized out by de-coupling the | |
804 | * producer index from the buffer index. | |
805 | */ | |
806 | retry_getting_window: | |
807 | spin_lock_bh(&adapter->tx_lock); | |
3176ff3e | 808 | if (adapter->total_threads >= MAX_XMIT_PRODUCERS) { |
3d396eb1 AK |
809 | spin_unlock_bh(&adapter->tx_lock); |
810 | /* | |
811 | * Yield CPU | |
812 | */ | |
813 | if (!in_atomic()) | |
814 | schedule(); | |
815 | else { | |
816 | for (i = 0; i < 20; i++) | |
817 | cpu_relax(); /*This a nop instr on i386 */ | |
818 | } | |
819 | goto retry_getting_window; | |
820 | } | |
821 | local_producer = adapter->cmd_producer; | |
822 | /* There 4 fragments per descriptor */ | |
823 | no_of_desc = (frag_count + 3) >> 2; | |
cb8011ad AK |
824 | if (netdev->features & NETIF_F_TSO) { |
825 | if (skb_shinfo(skb)->gso_size > 0) { | |
826 | ||
3d396eb1 | 827 | no_of_desc++; |
ab6a5bb6 | 828 | if ((ip_hdrlen(skb) + tcp_hdrlen(skb) + |
c9bdd4b5 | 829 | sizeof(struct ethhdr)) > |
ed25ffa1 | 830 | (sizeof(struct cmd_desc_type0) - 2)) { |
cb8011ad AK |
831 | no_of_desc++; |
832 | } | |
3d396eb1 AK |
833 | } |
834 | } | |
835 | k = adapter->cmd_producer; | |
836 | max_tx_desc_count = adapter->max_tx_desc_count; | |
837 | last_cmd_consumer = adapter->last_cmd_consumer; | |
838 | if ((k + no_of_desc) >= | |
839 | ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count : | |
840 | last_cmd_consumer)) { | |
ed25ffa1 | 841 | netif_stop_queue(netdev); |
3176ff3e | 842 | adapter->flags |= NETXEN_NETDEV_STATUS; |
3d396eb1 | 843 | spin_unlock_bh(&adapter->tx_lock); |
ed25ffa1 | 844 | return NETDEV_TX_BUSY; |
3d396eb1 AK |
845 | } |
846 | k = get_index_range(k, max_tx_desc_count, no_of_desc); | |
847 | adapter->cmd_producer = k; | |
848 | adapter->total_threads++; | |
849 | adapter->num_threads++; | |
850 | ||
851 | spin_unlock_bh(&adapter->tx_lock); | |
852 | /* Copy the descriptors into the hardware */ | |
853 | producer = local_producer; | |
854 | saved_producer = producer; | |
855 | hwdesc = &hw->cmd_desc_head[producer]; | |
856 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
857 | /* Take skb->data itself */ | |
858 | pbuf = &adapter->cmd_buf_arr[producer]; | |
cb8011ad | 859 | if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) { |
a608ab9c | 860 | pbuf->mss = skb_shinfo(skb)->gso_size; |
ed33ebe4 | 861 | hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
3d396eb1 AK |
862 | } else { |
863 | pbuf->mss = 0; | |
864 | hwdesc->mss = 0; | |
865 | } | |
3d396eb1 AK |
866 | pbuf->total_length = skb->len; |
867 | pbuf->skb = skb; | |
868 | pbuf->cmd = TX_ETHER_PKT; | |
869 | pbuf->frag_count = frag_count; | |
3176ff3e | 870 | pbuf->port = adapter->portnum; |
3d396eb1 | 871 | buffrag = &pbuf->frag_array[0]; |
3176ff3e | 872 | buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len, |
3d396eb1 AK |
873 | PCI_DMA_TODEVICE); |
874 | buffrag->length = first_seg_len; | |
ed25ffa1 AK |
875 | netxen_set_cmd_desc_totallength(hwdesc, skb->len); |
876 | netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count); | |
877 | netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT); | |
3d396eb1 | 878 | |
3176ff3e | 879 | netxen_set_cmd_desc_port(hwdesc, adapter->portnum); |
3d396eb1 AK |
880 | hwdesc->buffer1_length = cpu_to_le16(first_seg_len); |
881 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
882 | ||
883 | for (i = 1, k = 1; i < frag_count; i++, k++) { | |
884 | struct skb_frag_struct *frag; | |
885 | int len, temp_len; | |
886 | unsigned long offset; | |
887 | dma_addr_t temp_dma; | |
888 | ||
889 | /* move to next desc. if there is a need */ | |
890 | if ((i & 0x3) == 0) { | |
891 | k = 0; | |
892 | producer = get_next_index(producer, | |
893 | adapter->max_tx_desc_count); | |
894 | hwdesc = &hw->cmd_desc_head[producer]; | |
895 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
896 | } | |
897 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
898 | len = frag->size; | |
899 | offset = frag->page_offset; | |
900 | ||
901 | temp_len = len; | |
3176ff3e | 902 | temp_dma = pci_map_page(adapter->pdev, frag->page, offset, |
3d396eb1 AK |
903 | len, PCI_DMA_TODEVICE); |
904 | ||
905 | buffrag++; | |
906 | buffrag->dma = temp_dma; | |
907 | buffrag->length = temp_len; | |
908 | ||
909 | DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k); | |
910 | switch (k) { | |
911 | case 0: | |
912 | hwdesc->buffer1_length = cpu_to_le16(temp_len); | |
913 | hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); | |
914 | break; | |
915 | case 1: | |
916 | hwdesc->buffer2_length = cpu_to_le16(temp_len); | |
917 | hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); | |
918 | break; | |
919 | case 2: | |
920 | hwdesc->buffer3_length = cpu_to_le16(temp_len); | |
921 | hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); | |
922 | break; | |
923 | case 3: | |
a608ab9c | 924 | hwdesc->buffer4_length = cpu_to_le16(temp_len); |
3d396eb1 AK |
925 | hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); |
926 | break; | |
927 | } | |
928 | frag++; | |
929 | } | |
930 | producer = get_next_index(producer, adapter->max_tx_desc_count); | |
931 | ||
932 | /* might change opcode to TX_TCP_LSO */ | |
933 | netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb); | |
934 | ||
935 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
936 | * the descriptor ring | |
937 | */ | |
ed25ffa1 AK |
938 | if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer]) |
939 | == TX_TCP_LSO) { | |
3d396eb1 AK |
940 | int hdr_len, first_hdr_len, more_hdr; |
941 | hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length; | |
ed25ffa1 AK |
942 | if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) { |
943 | first_hdr_len = sizeof(struct cmd_desc_type0) - 2; | |
3d396eb1 AK |
944 | more_hdr = 1; |
945 | } else { | |
946 | first_hdr_len = hdr_len; | |
947 | more_hdr = 0; | |
948 | } | |
949 | /* copy the MAC/IP/TCP headers to the cmd descriptor list */ | |
950 | hwdesc = &hw->cmd_desc_head[producer]; | |
951 | ||
952 | /* copy the first 64 bytes */ | |
ed25ffa1 | 953 | memcpy(((void *)hwdesc) + 2, |
3d396eb1 AK |
954 | (void *)(skb->data), first_hdr_len); |
955 | producer = get_next_index(producer, max_tx_desc_count); | |
956 | ||
957 | if (more_hdr) { | |
958 | hwdesc = &hw->cmd_desc_head[producer]; | |
959 | /* copy the next 64 bytes - should be enough except | |
960 | * for pathological case | |
961 | */ | |
d626f62b ACM |
962 | skb_copy_from_linear_data_offset(skb, first_hdr_len, |
963 | hwdesc, | |
964 | (hdr_len - | |
965 | first_hdr_len)); | |
3d396eb1 AK |
966 | producer = get_next_index(producer, max_tx_desc_count); |
967 | } | |
968 | } | |
969 | spin_lock_bh(&adapter->tx_lock); | |
3176ff3e | 970 | adapter->stats.txbytes += |
ed25ffa1 | 971 | netxen_get_cmd_desc_totallength(&hw->cmd_desc_head[saved_producer]); |
3d396eb1 AK |
972 | /* Code to update the adapter considering how many producer threads |
973 | are currently working */ | |
974 | if ((--adapter->num_threads) == 0) { | |
975 | /* This is the last thread */ | |
976 | u32 crb_producer = adapter->cmd_producer; | |
3176ff3e | 977 | netxen_nic_update_cmd_producer(adapter, crb_producer); |
3d396eb1 AK |
978 | wmb(); |
979 | adapter->total_threads = 0; | |
3d396eb1 AK |
980 | } |
981 | ||
3176ff3e | 982 | adapter->stats.xmitfinished++; |
3d396eb1 AK |
983 | spin_unlock_bh(&adapter->tx_lock); |
984 | ||
985 | netdev->trans_start = jiffies; | |
986 | ||
987 | DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer); | |
988 | ||
989 | DPRINTK(INFO, "Done. Send\n"); | |
990 | return NETDEV_TX_OK; | |
991 | } | |
992 | ||
993 | static void netxen_watchdog(unsigned long v) | |
994 | { | |
995 | struct netxen_adapter *adapter = (struct netxen_adapter *)v; | |
ed25ffa1 AK |
996 | |
997 | SCHEDULE_WORK(&adapter->watchdog_task); | |
3d396eb1 AK |
998 | } |
999 | ||
1000 | static void netxen_tx_timeout(struct net_device *netdev) | |
1001 | { | |
3176ff3e MT |
1002 | struct netxen_adapter *adapter = (struct netxen_adapter *) |
1003 | netdev_priv(netdev); | |
1004 | SCHEDULE_WORK(&adapter->tx_timeout_task); | |
3d396eb1 AK |
1005 | } |
1006 | ||
6d5aefb8 | 1007 | static void netxen_tx_timeout_task(struct work_struct *work) |
3d396eb1 | 1008 | { |
3176ff3e MT |
1009 | struct netxen_adapter *adapter = |
1010 | container_of(work, struct netxen_adapter, tx_timeout_task); | |
1011 | struct net_device *netdev = adapter->netdev; | |
3d396eb1 AK |
1012 | unsigned long flags; |
1013 | ||
1014 | printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", | |
1015 | netxen_nic_driver_name, netdev->name); | |
1016 | ||
3176ff3e | 1017 | spin_lock_irqsave(&adapter->lock, flags); |
3d396eb1 AK |
1018 | netxen_nic_close(netdev); |
1019 | netxen_nic_open(netdev); | |
3176ff3e | 1020 | spin_unlock_irqrestore(&adapter->lock, flags); |
3d396eb1 AK |
1021 | netdev->trans_start = jiffies; |
1022 | netif_wake_queue(netdev); | |
1023 | } | |
1024 | ||
1025 | static int | |
1026 | netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev) | |
1027 | { | |
1028 | u32 ret = 0; | |
1029 | ||
1030 | DPRINTK(INFO, "Entered handle ISR\n"); | |
1031 | ||
3d396eb1 AK |
1032 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { |
1033 | int count = 0; | |
1034 | u32 mask; | |
3176ff3e MT |
1035 | u32 our_int = 0; |
1036 | our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); | |
1037 | /* not our interrupt */ | |
1038 | if ((our_int & (0x80 << adapter->portnum)) == 0) | |
ed25ffa1 | 1039 | return ret; |
3d396eb1 AK |
1040 | netxen_nic_disable_int(adapter); |
1041 | /* Window = 0 or 1 */ | |
1042 | do { | |
71bd7877 AK |
1043 | writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter, |
1044 | ISR_INT_TARGET_STATUS)); | |
1045 | mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); | |
3d396eb1 AK |
1046 | } while (((mask & 0x80) != 0) && (++count < 32)); |
1047 | if ((mask & 0x80) != 0) | |
1048 | printk("Could not disable interrupt completely\n"); | |
1049 | ||
1050 | } | |
3d396eb1 AK |
1051 | |
1052 | if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) { | |
1053 | if (netif_rx_schedule_prep(netdev)) { | |
1054 | /* | |
1055 | * Interrupts are already disabled. | |
1056 | */ | |
1057 | __netif_rx_schedule(netdev); | |
1058 | } else { | |
1059 | static unsigned int intcount = 0; | |
1060 | if ((++intcount & 0xfff) == 0xfff) | |
1061 | printk(KERN_ERR | |
1062 | "%s: %s interrupt %d while in poll\n", | |
1063 | netxen_nic_driver_name, netdev->name, | |
1064 | intcount); | |
1065 | } | |
1066 | ret = 1; | |
1067 | } | |
1068 | ||
1069 | if (ret == 0) { | |
1070 | netxen_nic_enable_int(adapter); | |
1071 | } | |
1072 | ||
1073 | return ret; | |
1074 | } | |
1075 | ||
1076 | /* | |
1077 | * netxen_intr - Interrupt Handler | |
1078 | * @irq: interrupt number | |
1079 | * data points to adapter stucture (which may be handling more than 1 port | |
1080 | */ | |
1494a814 | 1081 | irqreturn_t netxen_intr(int irq, void *data) |
3d396eb1 AK |
1082 | { |
1083 | struct netxen_adapter *adapter; | |
3d396eb1 | 1084 | struct net_device *netdev; |
3d396eb1 AK |
1085 | |
1086 | if (unlikely(!irq)) { | |
1087 | return IRQ_NONE; /* Not our interrupt */ | |
1088 | } | |
1089 | ||
1090 | adapter = (struct netxen_adapter *)data; | |
3176ff3e MT |
1091 | netdev = adapter->netdev; |
1092 | /* process our status queue (for all 4 ports) */ | |
1093 | if (netif_running(netdev)) | |
1094 | netxen_handle_int(adapter, netdev); | |
3d396eb1 AK |
1095 | |
1096 | return IRQ_HANDLED; | |
1097 | } | |
1098 | ||
1099 | static int netxen_nic_poll(struct net_device *netdev, int *budget) | |
1100 | { | |
3176ff3e | 1101 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
1102 | int work_to_do = min(*budget, netdev->quota); |
1103 | int done = 1; | |
1104 | int ctx; | |
1105 | int this_work_done; | |
80922fbc | 1106 | int work_done = 0; |
3d396eb1 AK |
1107 | |
1108 | DPRINTK(INFO, "polling for %d descriptors\n", *budget); | |
3d396eb1 | 1109 | |
80922fbc | 1110 | work_done = 0; |
3d396eb1 AK |
1111 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
1112 | /* | |
1113 | * Fairness issue. This will give undue weight to the | |
1114 | * receive context 0. | |
1115 | */ | |
1116 | ||
1117 | /* | |
1118 | * To avoid starvation, we give each of our receivers, | |
1119 | * a fraction of the quota. Sometimes, it might happen that we | |
1120 | * have enough quota to process every packet, but since all the | |
1121 | * packets are on one context, it gets only half of the quota, | |
1122 | * and ends up not processing it. | |
1123 | */ | |
1124 | this_work_done = netxen_process_rcv_ring(adapter, ctx, | |
1125 | work_to_do / | |
1126 | MAX_RCV_CTX); | |
80922fbc | 1127 | work_done += this_work_done; |
3d396eb1 AK |
1128 | } |
1129 | ||
80922fbc AK |
1130 | netdev->quota -= work_done; |
1131 | *budget -= work_done; | |
3d396eb1 | 1132 | |
ed25ffa1 | 1133 | if (work_done >= work_to_do && netxen_nic_rx_has_work(adapter) != 0) |
3d396eb1 AK |
1134 | done = 0; |
1135 | ||
ed25ffa1 AK |
1136 | if (netxen_process_cmd_ring((unsigned long)adapter) == 0) |
1137 | done = 0; | |
3d396eb1 AK |
1138 | |
1139 | DPRINTK(INFO, "new work_done: %d work_to_do: %d\n", | |
80922fbc | 1140 | work_done, work_to_do); |
3d396eb1 AK |
1141 | if (done) { |
1142 | netif_rx_complete(netdev); | |
1143 | netxen_nic_enable_int(adapter); | |
1144 | } | |
1145 | ||
edf90163 | 1146 | return !done; |
3d396eb1 AK |
1147 | } |
1148 | ||
1149 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1150 | static void netxen_nic_poll_controller(struct net_device *netdev) | |
1151 | { | |
3176ff3e | 1152 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 | 1153 | disable_irq(adapter->irq); |
1494a814 | 1154 | netxen_intr(adapter->irq, adapter); |
3d396eb1 AK |
1155 | enable_irq(adapter->irq); |
1156 | } | |
1157 | #endif | |
3d396eb1 AK |
1158 | |
1159 | static struct pci_driver netxen_driver = { | |
1160 | .name = netxen_nic_driver_name, | |
1161 | .id_table = netxen_pci_tbl, | |
1162 | .probe = netxen_nic_probe, | |
1163 | .remove = __devexit_p(netxen_nic_remove) | |
1164 | }; | |
1165 | ||
1166 | /* Driver Registration on NetXen card */ | |
1167 | ||
1168 | static int __init netxen_init_module(void) | |
1169 | { | |
ed25ffa1 AK |
1170 | if ((netxen_workq = create_singlethread_workqueue("netxen")) == 0) |
1171 | return -ENOMEM; | |
1172 | ||
184231bd | 1173 | return pci_register_driver(&netxen_driver); |
3d396eb1 AK |
1174 | } |
1175 | ||
1176 | module_init(netxen_init_module); | |
1177 | ||
1178 | static void __exit netxen_exit_module(void) | |
1179 | { | |
1180 | /* | |
1181 | * Wait for some time to allow the dma to drain, if any. | |
1182 | */ | |
3d396eb1 | 1183 | pci_unregister_driver(&netxen_driver); |
9de06610 | 1184 | destroy_workqueue(netxen_workq); |
3d396eb1 AK |
1185 | } |
1186 | ||
1187 | module_exit(netxen_exit_module); |