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