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 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 | 78 | |
6c80b18d MT |
79 | int physical_port[] = {0, 1, 2, 3}; |
80 | ||
3d396eb1 AK |
81 | /* PCI Device ID Table */ |
82 | static struct pci_device_id netxen_pci_tbl[] __devinitdata = { | |
83 | {PCI_DEVICE(0x4040, 0x0001)}, | |
84 | {PCI_DEVICE(0x4040, 0x0002)}, | |
85 | {PCI_DEVICE(0x4040, 0x0003)}, | |
86 | {PCI_DEVICE(0x4040, 0x0004)}, | |
87 | {PCI_DEVICE(0x4040, 0x0005)}, | |
0d390734 AK |
88 | {PCI_DEVICE(0x4040, 0x0024)}, |
89 | {PCI_DEVICE(0x4040, 0x0025)}, | |
3d396eb1 AK |
90 | {0,} |
91 | }; | |
92 | ||
93 | MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); | |
94 | ||
ed25ffa1 AK |
95 | struct workqueue_struct *netxen_workq; |
96 | static void netxen_watchdog(unsigned long); | |
97 | ||
3176ff3e MT |
98 | static inline void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter, |
99 | uint32_t crb_producer) | |
100 | { | |
101 | switch (adapter->portnum) { | |
102 | case 0: | |
103 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
104 | (adapter, CRB_CMD_PRODUCER_OFFSET)); | |
105 | return; | |
106 | case 1: | |
107 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
108 | (adapter, CRB_CMD_PRODUCER_OFFSET_1)); | |
109 | return; | |
110 | case 2: | |
111 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
112 | (adapter, CRB_CMD_PRODUCER_OFFSET_2)); | |
113 | return; | |
114 | case 3: | |
115 | writel(crb_producer, NETXEN_CRB_NORMALIZE | |
116 | (adapter, CRB_CMD_PRODUCER_OFFSET_3)); | |
117 | return; | |
118 | default: | |
119 | printk(KERN_WARNING "We tried to update " | |
120 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
121 | "PCI function id %d\n", | |
122 | adapter->portnum); | |
123 | return; | |
124 | } | |
125 | } | |
126 | ||
127 | static inline void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter, | |
128 | u32 crb_consumer) | |
129 | { | |
130 | switch (adapter->portnum) { | |
131 | case 0: | |
132 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
133 | (adapter, CRB_CMD_CONSUMER_OFFSET)); | |
134 | return; | |
135 | case 1: | |
136 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
137 | (adapter, CRB_CMD_CONSUMER_OFFSET_1)); | |
138 | return; | |
139 | case 2: | |
140 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
141 | (adapter, CRB_CMD_CONSUMER_OFFSET_2)); | |
142 | return; | |
143 | case 3: | |
144 | writel(crb_consumer, NETXEN_CRB_NORMALIZE | |
145 | (adapter, CRB_CMD_CONSUMER_OFFSET_3)); | |
146 | return; | |
147 | default: | |
148 | printk(KERN_WARNING "We tried to update " | |
149 | "CRB_CMD_PRODUCER_OFFSET for invalid " | |
150 | "PCI function id %d\n", | |
151 | adapter->portnum); | |
152 | return; | |
153 | } | |
154 | } | |
155 | ||
156 | #define ADAPTER_LIST_SIZE 12 | |
157 | int netxen_cards_found; | |
158 | ||
3d396eb1 AK |
159 | /* |
160 | * netxen_nic_probe() | |
161 | * | |
162 | * The Linux system will invoke this after identifying the vendor ID and | |
163 | * device Id in the pci_tbl supported by this module. | |
164 | * | |
165 | * A quad port card has one operational PCI config space, (function 0), | |
166 | * which is used to access all four ports. | |
167 | * | |
168 | * This routine will initialize the adapter, and setup the global parameters | |
169 | * along with the port's specific structure. | |
170 | */ | |
171 | static int __devinit | |
172 | netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
173 | { | |
174 | struct net_device *netdev = NULL; | |
175 | struct netxen_adapter *adapter = NULL; | |
ed25ffa1 AK |
176 | void __iomem *mem_ptr0 = NULL; |
177 | void __iomem *mem_ptr1 = NULL; | |
178 | void __iomem *mem_ptr2 = NULL; | |
6c80b18d MT |
179 | unsigned long first_page_group_end; |
180 | unsigned long first_page_group_start; | |
181 | ||
cb8011ad | 182 | |
a608ab9c | 183 | u8 __iomem *db_ptr = NULL; |
ed25ffa1 | 184 | unsigned long mem_base, mem_len, db_base, db_len; |
3176ff3e | 185 | int pci_using_dac, i = 0, err; |
3d396eb1 AK |
186 | int ring; |
187 | struct netxen_recv_context *recv_ctx = NULL; | |
188 | struct netxen_rcv_desc_ctx *rcv_desc = NULL; | |
189 | struct netxen_cmd_buffer *cmd_buf_arr = NULL; | |
190 | u64 mac_addr[FLASH_NUM_PORTS + 1]; | |
6c80b18d MT |
191 | int valid_mac = 0; |
192 | u32 val; | |
3176ff3e | 193 | int pci_func_id = PCI_FUNC(pdev->devfn); |
3d396eb1 | 194 | |
cb8011ad | 195 | printk(KERN_INFO "%s \n", netxen_nic_driver_string); |
6c80b18d | 196 | |
3176ff3e MT |
197 | if (pdev->class != 0x020000) { |
198 | printk(KERN_ERR"NetXen function %d, class %x will not" | |
199 | "be enabled.\n",pci_func_id, pdev->class); | |
ed25ffa1 AK |
200 | return -ENODEV; |
201 | } | |
3d396eb1 AK |
202 | if ((err = pci_enable_device(pdev))) |
203 | return err; | |
204 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
205 | err = -ENODEV; | |
206 | goto err_out_disable_pdev; | |
207 | } | |
208 | ||
209 | if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) | |
210 | goto err_out_disable_pdev; | |
211 | ||
212 | pci_set_master(pdev); | |
ed25ffa1 AK |
213 | pci_read_config_byte(pdev, PCI_REVISION_ID, &nx_p2_id); |
214 | if (nx_p2_id == NX_P2_C1 && | |
215 | (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) && | |
216 | (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) { | |
3d396eb1 | 217 | pci_using_dac = 1; |
ed25ffa1 | 218 | } else { |
3d396eb1 AK |
219 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
220 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) | |
221 | goto err_out_free_res; | |
222 | ||
223 | pci_using_dac = 0; | |
224 | } | |
225 | ||
3176ff3e MT |
226 | |
227 | netdev = alloc_etherdev(sizeof(struct netxen_adapter)); | |
228 | if(!netdev) { | |
229 | printk(KERN_ERR"%s: Failed to allocate memory for the " | |
230 | "device block.Check system memory resource" | |
231 | " usage.\n", netxen_nic_driver_name); | |
232 | goto err_out_free_res; | |
233 | } | |
234 | ||
235 | SET_MODULE_OWNER(netdev); | |
236 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
237 | ||
238 | adapter = netdev->priv; | |
239 | memset(adapter, 0 , sizeof(struct netxen_adapter)); | |
240 | ||
241 | adapter->ahw.pdev = pdev; | |
13ba9c77 | 242 | adapter->ahw.pci_func = pci_func_id; |
6c80b18d MT |
243 | spin_lock_init(&adapter->tx_lock); |
244 | spin_lock_init(&adapter->lock); | |
13ba9c77 | 245 | |
3d396eb1 AK |
246 | /* remap phys address */ |
247 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
248 | mem_len = pci_resource_len(pdev, 0); | |
249 | ||
250 | /* 128 Meg of memory */ | |
6c80b18d MT |
251 | if (mem_len == NETXEN_PCI_128MB_SIZE) { |
252 | mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); | |
253 | mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START, | |
254 | SECOND_PAGE_GROUP_SIZE); | |
255 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START, | |
256 | THIRD_PAGE_GROUP_SIZE); | |
257 | first_page_group_start = FIRST_PAGE_GROUP_START; | |
258 | first_page_group_end = FIRST_PAGE_GROUP_END; | |
259 | } else if (mem_len == NETXEN_PCI_32MB_SIZE) { | |
260 | mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE); | |
261 | mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START - | |
262 | SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); | |
263 | first_page_group_start = 0; | |
264 | first_page_group_end = 0; | |
265 | } else { | |
266 | err = -EIO; | |
267 | goto err_out_free_netdev; | |
268 | } | |
cb8011ad | 269 | |
6c80b18d MT |
270 | if (((mem_ptr0 == 0UL) && (mem_len == NETXEN_PCI_128MB_SIZE)) || |
271 | (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) { | |
ed25ffa1 | 272 | DPRINTK(ERR, |
cb8011ad AK |
273 | "Cannot remap adapter memory aborting.:" |
274 | "0 -> %p, 1 -> %p, 2 -> %p\n", | |
275 | mem_ptr0, mem_ptr1, mem_ptr2); | |
276 | ||
3d396eb1 | 277 | err = -EIO; |
ed25ffa1 AK |
278 | goto err_out_iounmap; |
279 | } | |
280 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ | |
281 | db_len = pci_resource_len(pdev, 4); | |
282 | ||
283 | if (db_len == 0) { | |
284 | printk(KERN_ERR "%s: doorbell is disabled\n", | |
285 | netxen_nic_driver_name); | |
286 | err = -EIO; | |
287 | goto err_out_iounmap; | |
288 | } | |
289 | DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base, | |
290 | db_len); | |
291 | ||
292 | db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); | |
a608ab9c | 293 | if (!db_ptr) { |
ed25ffa1 AK |
294 | printk(KERN_ERR "%s: Failed to allocate doorbell map.", |
295 | netxen_nic_driver_name); | |
296 | err = -EIO; | |
297 | goto err_out_iounmap; | |
3d396eb1 | 298 | } |
ed25ffa1 | 299 | DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr); |
3d396eb1 | 300 | |
6c80b18d MT |
301 | adapter->ahw.pci_base0 = mem_ptr0; |
302 | adapter->ahw.first_page_group_start = first_page_group_start; | |
303 | adapter->ahw.first_page_group_end = first_page_group_end; | |
304 | adapter->ahw.pci_base1 = mem_ptr1; | |
305 | adapter->ahw.pci_base2 = mem_ptr2; | |
306 | adapter->ahw.db_base = db_ptr; | |
307 | adapter->ahw.db_len = db_len; | |
3d396eb1 | 308 | |
3176ff3e MT |
309 | adapter->netdev = netdev; |
310 | adapter->pdev = pdev; | |
311 | adapter->portnum = pci_func_id; | |
312 | ||
313 | netdev->open = netxen_nic_open; | |
314 | netdev->stop = netxen_nic_close; | |
315 | netdev->hard_start_xmit = netxen_nic_xmit_frame; | |
6c80b18d | 316 | netdev->get_stats = netxen_nic_get_stats; |
3176ff3e MT |
317 | netdev->set_multicast_list = netxen_nic_set_multi; |
318 | netdev->set_mac_address = netxen_nic_set_mac; | |
319 | netdev->change_mtu = netxen_nic_change_mtu; | |
320 | netdev->tx_timeout = netxen_tx_timeout; | |
321 | netdev->watchdog_timeo = HZ; | |
322 | ||
323 | netxen_nic_change_mtu(netdev, netdev->mtu); | |
324 | ||
325 | SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); | |
326 | netdev->poll = netxen_nic_poll; | |
327 | netdev->weight = NETXEN_NETDEV_WEIGHT; | |
328 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
329 | netdev->poll_controller = netxen_nic_poll_controller; | |
330 | #endif | |
331 | /* ScatterGather support */ | |
332 | netdev->features = NETIF_F_SG; | |
333 | netdev->features |= NETIF_F_IP_CSUM; | |
334 | netdev->features |= NETIF_F_TSO; | |
335 | ||
336 | if (pci_using_dac) | |
337 | netdev->features |= NETIF_F_HIGHDMA; | |
338 | ||
644caeef | 339 | if (pci_enable_msi(pdev)) |
3176ff3e | 340 | adapter->flags &= ~NETXEN_NIC_MSI_ENABLED; |
644caeef | 341 | else |
3176ff3e MT |
342 | adapter->flags |= NETXEN_NIC_MSI_ENABLED; |
343 | ||
6c80b18d MT |
344 | netdev->irq = pdev->irq; |
345 | INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task); | |
346 | ||
347 | /* | |
348 | * Set the CRB window to invalid. If any register in window 0 is | |
349 | * accessed it should set the window to 0 and then reset it to 1. | |
350 | */ | |
351 | adapter->curr_window = 255; | |
352 | ||
353 | /* initialize the adapter */ | |
354 | netxen_initialize_adapter_hw(adapter); | |
355 | ||
6c80b18d MT |
356 | /* |
357 | * Adapter in our case is quad port so initialize it before | |
358 | * initializing the ports | |
359 | */ | |
360 | ||
361 | netxen_initialize_adapter_ops(adapter); | |
362 | ||
363 | adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST; | |
364 | if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) || | |
365 | (adapter->ahw.boardcfg.board_type == | |
366 | NETXEN_BRDTYPE_P2_SB31_2G)) | |
367 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G; | |
368 | else | |
369 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS; | |
370 | adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; | |
371 | adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; | |
372 | ||
3d396eb1 AK |
373 | cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE); |
374 | if (cmd_buf_arr == NULL) { | |
ed25ffa1 AK |
375 | printk(KERN_ERR |
376 | "%s: Could not allocate cmd_buf_arr memory:%d\n", | |
377 | netxen_nic_driver_name, (int)TX_RINGSIZE); | |
3d396eb1 AK |
378 | err = -ENOMEM; |
379 | goto err_out_free_adapter; | |
380 | } | |
381 | memset(cmd_buf_arr, 0, TX_RINGSIZE); | |
6c80b18d | 382 | adapter->cmd_buf_arr = cmd_buf_arr; |
3d396eb1 AK |
383 | |
384 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
385 | recv_ctx = &adapter->recv_ctx[i]; | |
386 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
387 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
388 | switch (RCV_DESC_TYPE(ring)) { | |
389 | case RCV_DESC_NORMAL: | |
390 | rcv_desc->max_rx_desc_count = | |
391 | adapter->max_rx_desc_count; | |
392 | rcv_desc->flags = RCV_DESC_NORMAL; | |
393 | rcv_desc->dma_size = RX_DMA_MAP_LEN; | |
394 | rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH; | |
395 | break; | |
396 | ||
397 | case RCV_DESC_JUMBO: | |
398 | rcv_desc->max_rx_desc_count = | |
399 | adapter->max_jumbo_rx_desc_count; | |
400 | rcv_desc->flags = RCV_DESC_JUMBO; | |
401 | rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN; | |
402 | rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH; | |
403 | break; | |
404 | ||
ed25ffa1 AK |
405 | case RCV_RING_LRO: |
406 | rcv_desc->max_rx_desc_count = | |
407 | adapter->max_lro_rx_desc_count; | |
408 | rcv_desc->flags = RCV_DESC_LRO; | |
409 | rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN; | |
410 | rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH; | |
411 | break; | |
412 | ||
3d396eb1 AK |
413 | } |
414 | rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *) | |
415 | vmalloc(RCV_BUFFSIZE); | |
416 | ||
417 | if (rcv_desc->rx_buf_arr == NULL) { | |
ed25ffa1 AK |
418 | printk(KERN_ERR "%s: Could not allocate" |
419 | "rcv_desc->rx_buf_arr memory:%d\n", | |
420 | netxen_nic_driver_name, | |
421 | (int)RCV_BUFFSIZE); | |
3d396eb1 AK |
422 | err = -ENOMEM; |
423 | goto err_out_free_rx_buffer; | |
424 | } | |
425 | memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE); | |
426 | } | |
427 | ||
428 | } | |
429 | ||
ed25ffa1 | 430 | netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */ |
6c80b18d | 431 | |
13ba9c77 | 432 | /* Mezz cards have PCI function 0,2,3 enabled */ |
6c80b18d MT |
433 | if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ) |
434 | && (pci_func_id >= 2)) | |
13ba9c77 MT |
435 | adapter->portnum = pci_func_id - 2; |
436 | ||
cb8011ad | 437 | #ifdef CONFIG_IA64 |
13ba9c77 | 438 | if(adapter->portnum == 0) { |
3176ff3e MT |
439 | netxen_pinit_from_rom(adapter, 0); |
440 | udelay(500); | |
441 | netxen_load_firmware(adapter); | |
442 | } | |
cb8011ad AK |
443 | #endif |
444 | ||
3d396eb1 AK |
445 | init_timer(&adapter->watchdog_timer); |
446 | adapter->ahw.xg_linkup = 0; | |
447 | adapter->watchdog_timer.function = &netxen_watchdog; | |
448 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
6d5aefb8 | 449 | INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task); |
3d396eb1 AK |
450 | adapter->ahw.pdev = pdev; |
451 | adapter->proc_cmd_buf_counter = 0; | |
ed25ffa1 | 452 | adapter->ahw.revision_id = nx_p2_id; |
3d396eb1 | 453 | |
6c80b18d MT |
454 | /* make sure Window == 1 */ |
455 | netxen_nic_pci_change_crbwindow(adapter, 1); | |
456 | ||
3176ff3e MT |
457 | netxen_nic_update_cmd_producer(adapter, 0); |
458 | netxen_nic_update_cmd_consumer(adapter, 0); | |
6c80b18d | 459 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO)); |
3d396eb1 AK |
460 | |
461 | if (netxen_is_flash_supported(adapter) == 0 && | |
462 | netxen_get_flash_mac_addr(adapter, mac_addr) == 0) | |
463 | valid_mac = 1; | |
464 | else | |
465 | valid_mac = 0; | |
466 | ||
3176ff3e | 467 | if (valid_mac) { |
13ba9c77 | 468 | unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum]; |
3176ff3e MT |
469 | netdev->dev_addr[0] = *(p + 5); |
470 | netdev->dev_addr[1] = *(p + 4); | |
471 | netdev->dev_addr[2] = *(p + 3); | |
472 | netdev->dev_addr[3] = *(p + 2); | |
473 | netdev->dev_addr[4] = *(p + 1); | |
474 | netdev->dev_addr[5] = *(p + 0); | |
475 | ||
476 | memcpy(netdev->perm_addr, netdev->dev_addr, | |
477 | netdev->addr_len); | |
478 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
479 | printk(KERN_ERR "%s: Bad MAC address " | |
480 | "%02x:%02x:%02x:%02x:%02x:%02x.\n", | |
481 | netxen_nic_driver_name, | |
482 | netdev->dev_addr[0], | |
483 | netdev->dev_addr[1], | |
484 | netdev->dev_addr[2], | |
485 | netdev->dev_addr[3], | |
486 | netdev->dev_addr[4], | |
487 | netdev->dev_addr[5]); | |
488 | } else { | |
489 | if (adapter->macaddr_set) | |
490 | adapter->macaddr_set(adapter, | |
491 | netdev->dev_addr); | |
492 | } | |
493 | } | |
494 | ||
6c80b18d | 495 | if (adapter->portnum == 0) { |
13ba9c77 | 496 | err = netxen_initialize_adapter_offload(adapter); |
6c80b18d MT |
497 | if (err) |
498 | goto err_out_free_rx_buffer; | |
499 | val = readl(NETXEN_CRB_NORMALIZE(adapter, | |
500 | NETXEN_CAM_RAM(0x1fc))); | |
501 | if (val == 0x55555555) { | |
502 | /* This is the first boot after power up */ | |
644caeef | 503 | netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val); |
504 | if (!(val & 0x4)) { | |
505 | val |= 0x4; | |
506 | netxen_nic_write_w0(adapter, NETXEN_PCIE_REG(0x4), val); | |
507 | netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val); | |
508 | } | |
6c80b18d MT |
509 | val = readl(NETXEN_CRB_NORMALIZE(adapter, |
510 | NETXEN_ROMUSB_GLB_SW_RESET)); | |
511 | printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val); | |
512 | if (val != 0x80000f) { | |
513 | /* clear the register for future unloads/loads */ | |
644caeef | 514 | writel(0, NETXEN_CRB_NORMALIZE(adapter, |
515 | NETXEN_CAM_RAM(0x1fc))); | |
516 | printk(KERN_ERR "ERROR in NetXen HW init sequence.\n"); | |
517 | err = -ENODEV; | |
518 | goto err_out_free_dev; | |
6c80b18d MT |
519 | } |
520 | ||
521 | /* clear the register for future unloads/loads */ | |
522 | writel(0, NETXEN_CRB_NORMALIZE(adapter, | |
523 | NETXEN_CAM_RAM(0x1fc))); | |
524 | } | |
525 | printk(KERN_INFO "State: 0x%0x\n", | |
526 | readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE))); | |
527 | ||
528 | /* | |
529 | * Tell the hardware our version number. | |
530 | */ | |
531 | i = (_NETXEN_NIC_LINUX_MAJOR << 16) | |
532 | | ((_NETXEN_NIC_LINUX_MINOR << 8)) | |
533 | | (_NETXEN_NIC_LINUX_SUBVERSION); | |
534 | writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION)); | |
3d396eb1 | 535 | |
3176ff3e MT |
536 | /* Unlock the HW, prompting the boot sequence */ |
537 | writel(1, | |
538 | NETXEN_CRB_NORMALIZE(adapter, | |
539 | NETXEN_ROMUSB_GLB_PEGTUNE_DONE)); | |
540 | /* Handshake with the card before we register the devices. */ | |
541 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
3e2facef MT |
542 | |
543 | /* leave the hw in the same state as reboot */ | |
544 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)); | |
545 | netxen_pinit_from_rom(adapter, 0); | |
546 | udelay(500); | |
547 | netxen_load_firmware(adapter); | |
548 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
3176ff3e | 549 | } |
3d396eb1 | 550 | |
3d396eb1 | 551 | /* |
6c80b18d | 552 | * See if the firmware gave us a virtual-physical port mapping. |
3d396eb1 | 553 | */ |
6c80b18d MT |
554 | i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum))); |
555 | if (i != 0x55555555) | |
556 | physical_port[adapter->portnum] = i; | |
557 | ||
3176ff3e MT |
558 | netif_carrier_off(netdev); |
559 | netif_stop_queue(netdev); | |
560 | ||
6c80b18d MT |
561 | if ((err = register_netdev(netdev))) { |
562 | printk(KERN_ERR "%s: register_netdev failed port #%d" | |
563 | " aborting\n", netxen_nic_driver_name, | |
564 | adapter->portnum); | |
565 | err = -EIO; | |
566 | goto err_out_free_dev; | |
567 | } | |
568 | ||
569 | pci_set_drvdata(pdev, adapter); | |
3d396eb1 AK |
570 | |
571 | switch (adapter->ahw.board_type) { | |
3176ff3e MT |
572 | case NETXEN_NIC_GBE: |
573 | printk(KERN_INFO "%s: QUAD GbE board initialized\n", | |
574 | netxen_nic_driver_name); | |
575 | break; | |
3d396eb1 | 576 | |
3176ff3e MT |
577 | case NETXEN_NIC_XGBE: |
578 | printk(KERN_INFO "%s: XGbE board initialized\n", | |
579 | netxen_nic_driver_name); | |
580 | break; | |
3d396eb1 AK |
581 | } |
582 | ||
583 | adapter->driver_mismatch = 0; | |
584 | ||
585 | return 0; | |
586 | ||
6c80b18d MT |
587 | err_out_free_dev: |
588 | if (adapter->portnum == 0) | |
589 | netxen_free_adapter_offload(adapter); | |
ed25ffa1 | 590 | |
6c80b18d | 591 | err_out_free_rx_buffer: |
3d396eb1 AK |
592 | for (i = 0; i < MAX_RCV_CTX; ++i) { |
593 | recv_ctx = &adapter->recv_ctx[i]; | |
594 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
595 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
596 | if (rcv_desc->rx_buf_arr != NULL) { | |
597 | vfree(rcv_desc->rx_buf_arr); | |
598 | rcv_desc->rx_buf_arr = NULL; | |
599 | } | |
600 | } | |
601 | } | |
3d396eb1 AK |
602 | vfree(cmd_buf_arr); |
603 | ||
6c80b18d MT |
604 | err_out_free_adapter: |
605 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
606 | pci_disable_msi(pdev); | |
607 | ||
3d396eb1 | 608 | pci_set_drvdata(pdev, NULL); |
3d396eb1 | 609 | |
ed25ffa1 AK |
610 | if (db_ptr) |
611 | iounmap(db_ptr); | |
612 | ||
6c80b18d | 613 | err_out_iounmap: |
ed25ffa1 AK |
614 | if (mem_ptr0) |
615 | iounmap(mem_ptr0); | |
616 | if (mem_ptr1) | |
617 | iounmap(mem_ptr1); | |
618 | if (mem_ptr2) | |
619 | iounmap(mem_ptr2); | |
cb8011ad | 620 | |
6c80b18d MT |
621 | err_out_free_netdev: |
622 | free_netdev(netdev); | |
623 | ||
624 | err_out_free_res: | |
3d396eb1 | 625 | pci_release_regions(pdev); |
6c80b18d MT |
626 | |
627 | err_out_disable_pdev: | |
3d396eb1 AK |
628 | pci_disable_device(pdev); |
629 | return err; | |
630 | } | |
631 | ||
632 | static void __devexit netxen_nic_remove(struct pci_dev *pdev) | |
633 | { | |
634 | struct netxen_adapter *adapter; | |
3176ff3e | 635 | struct net_device *netdev; |
3d396eb1 AK |
636 | struct netxen_rx_buffer *buffer; |
637 | struct netxen_recv_context *recv_ctx; | |
638 | struct netxen_rcv_desc_ctx *rcv_desc; | |
639 | int i; | |
640 | int ctxid, ring; | |
641 | ||
6c80b18d | 642 | adapter = pci_get_drvdata(pdev); |
3d396eb1 AK |
643 | if (adapter == NULL) |
644 | return; | |
645 | ||
6c80b18d MT |
646 | netdev = adapter->netdev; |
647 | ||
648 | netxen_nic_disable_int(adapter); | |
649 | if (adapter->irq) | |
650 | free_irq(adapter->irq, adapter); | |
651 | ||
3176ff3e MT |
652 | if (adapter->stop_port) |
653 | adapter->stop_port(adapter); | |
654 | ||
6c80b18d MT |
655 | if ((adapter->flags & NETXEN_NIC_MSI_ENABLED)) |
656 | pci_disable_msi(pdev); | |
657 | ||
658 | if (adapter->portnum == 0) | |
659 | netxen_free_adapter_offload(adapter); | |
660 | ||
595e3fb8 MT |
661 | if(adapter->portnum == 0) { |
662 | /* leave the hw in the same state as reboot */ | |
663 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)); | |
664 | netxen_pinit_from_rom(adapter, 0); | |
6c80b18d | 665 | udelay(500); |
595e3fb8 | 666 | netxen_load_firmware(adapter); |
6c80b18d | 667 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); |
595e3fb8 | 668 | } |
3d396eb1 | 669 | |
3d396eb1 AK |
670 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) |
671 | netxen_free_hw_resources(adapter); | |
672 | ||
3d396eb1 AK |
673 | for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) { |
674 | recv_ctx = &adapter->recv_ctx[ctxid]; | |
675 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
676 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
677 | for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) { | |
678 | buffer = &(rcv_desc->rx_buf_arr[i]); | |
679 | if (buffer->state == NETXEN_BUFFER_FREE) | |
680 | continue; | |
681 | pci_unmap_single(pdev, buffer->dma, | |
682 | rcv_desc->dma_size, | |
683 | PCI_DMA_FROMDEVICE); | |
684 | if (buffer->skb != NULL) | |
685 | dev_kfree_skb_any(buffer->skb); | |
686 | } | |
687 | vfree(rcv_desc->rx_buf_arr); | |
688 | } | |
689 | } | |
690 | ||
595e3fb8 | 691 | unregister_netdev(netdev); |
6c80b18d MT |
692 | |
693 | vfree(adapter->cmd_buf_arr); | |
694 | ||
695 | iounmap(adapter->ahw.db_base); | |
696 | iounmap(adapter->ahw.pci_base0); | |
697 | iounmap(adapter->ahw.pci_base1); | |
698 | iounmap(adapter->ahw.pci_base2); | |
595e3fb8 MT |
699 | |
700 | pci_release_regions(pdev); | |
701 | pci_disable_device(pdev); | |
702 | pci_set_drvdata(pdev, NULL); | |
703 | ||
6c80b18d | 704 | free_netdev(netdev); |
3d396eb1 AK |
705 | } |
706 | ||
707 | /* | |
708 | * Called when a network interface is made active | |
709 | * @returns 0 on success, negative value on failure | |
710 | */ | |
711 | static int netxen_nic_open(struct net_device *netdev) | |
712 | { | |
3176ff3e | 713 | struct netxen_adapter *adapter = (struct netxen_adapter *)netdev->priv; |
3d396eb1 AK |
714 | int err = 0; |
715 | int ctx, ring; | |
716 | ||
717 | if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { | |
718 | err = netxen_init_firmware(adapter); | |
719 | if (err != 0) { | |
720 | printk(KERN_ERR "Failed to init firmware\n"); | |
721 | return -EIO; | |
722 | } | |
723 | netxen_nic_flash_print(adapter); | |
724 | ||
725 | /* setup all the resources for the Phantom... */ | |
726 | /* this include the descriptors for rcv, tx, and status */ | |
727 | netxen_nic_clear_stats(adapter); | |
728 | err = netxen_nic_hw_resources(adapter); | |
729 | if (err) { | |
730 | printk(KERN_ERR "Error in setting hw resources:%d\n", | |
731 | err); | |
732 | return err; | |
733 | } | |
3d396eb1 | 734 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
cb8011ad | 735 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) |
3d396eb1 | 736 | netxen_post_rx_buffers(adapter, ctx, ring); |
3d396eb1 | 737 | } |
ed25ffa1 | 738 | adapter->irq = adapter->ahw.pdev->irq; |
6c80b18d | 739 | err = request_irq(adapter->ahw.pdev->irq, netxen_intr, |
1c8e039a | 740 | IRQF_SHARED|IRQF_SAMPLE_RANDOM, netdev->name, |
6c80b18d | 741 | adapter); |
3d396eb1 AK |
742 | if (err) { |
743 | printk(KERN_ERR "request_irq failed with: %d\n", err); | |
ed25ffa1 | 744 | netxen_free_hw_resources(adapter); |
3d396eb1 AK |
745 | return err; |
746 | } | |
ed25ffa1 AK |
747 | |
748 | adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; | |
749 | } | |
3176ff3e MT |
750 | if (!adapter->driver_mismatch) |
751 | mod_timer(&adapter->watchdog_timer, jiffies); | |
3d396eb1 | 752 | |
3176ff3e | 753 | netxen_nic_enable_int(adapter); |
3d396eb1 AK |
754 | |
755 | /* Done here again so that even if phantom sw overwrote it, | |
756 | * we set it */ | |
80922fbc | 757 | if (adapter->macaddr_set) |
3176ff3e | 758 | adapter->macaddr_set(adapter, netdev->dev_addr); |
595e3fb8 MT |
759 | if (adapter->init_port |
760 | && adapter->init_port(adapter, adapter->portnum) != 0) { | |
6c80b18d | 761 | del_timer_sync(&adapter->watchdog_timer); |
595e3fb8 MT |
762 | printk(KERN_ERR "%s: Failed to initialize port %d\n", |
763 | netxen_nic_driver_name, adapter->portnum); | |
595e3fb8 MT |
764 | return -EIO; |
765 | } | |
766 | ||
3176ff3e | 767 | netxen_nic_set_link_parameters(adapter); |
3d396eb1 AK |
768 | |
769 | netxen_nic_set_multi(netdev); | |
ed25ffa1 | 770 | if (adapter->set_mtu) |
3176ff3e | 771 | adapter->set_mtu(adapter, netdev->mtu); |
ed25ffa1 | 772 | |
3d396eb1 AK |
773 | if (!adapter->driver_mismatch) |
774 | netif_start_queue(netdev); | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
779 | /* | |
780 | * netxen_nic_close - Disables a network interface entry point | |
781 | */ | |
782 | static int netxen_nic_close(struct net_device *netdev) | |
783 | { | |
3176ff3e | 784 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
785 | int i, j; |
786 | struct netxen_cmd_buffer *cmd_buff; | |
787 | struct netxen_skb_frag *buffrag; | |
788 | ||
789 | netif_carrier_off(netdev); | |
790 | netif_stop_queue(netdev); | |
791 | ||
3176ff3e MT |
792 | cmd_buff = adapter->cmd_buf_arr; |
793 | for (i = 0; i < adapter->max_tx_desc_count; i++) { | |
794 | buffrag = cmd_buff->frag_array; | |
795 | if (buffrag->dma) { | |
796 | pci_unmap_single(adapter->pdev, buffrag->dma, | |
797 | buffrag->length, PCI_DMA_TODEVICE); | |
798 | buffrag->dma = (u64) NULL; | |
799 | } | |
800 | for (j = 0; j < cmd_buff->frag_count; j++) { | |
801 | buffrag++; | |
3d396eb1 | 802 | if (buffrag->dma) { |
3176ff3e MT |
803 | pci_unmap_page(adapter->pdev, buffrag->dma, |
804 | buffrag->length, | |
805 | PCI_DMA_TODEVICE); | |
3d396eb1 AK |
806 | buffrag->dma = (u64) NULL; |
807 | } | |
3d396eb1 | 808 | } |
3176ff3e MT |
809 | /* Free the skb we received in netxen_nic_xmit_frame */ |
810 | if (cmd_buff->skb) { | |
811 | dev_kfree_skb_any(cmd_buff->skb); | |
812 | cmd_buff->skb = NULL; | |
813 | } | |
814 | cmd_buff++; | |
3d396eb1 | 815 | } |
3176ff3e MT |
816 | FLUSH_SCHEDULED_WORK(); |
817 | del_timer_sync(&adapter->watchdog_timer); | |
3d396eb1 AK |
818 | |
819 | return 0; | |
820 | } | |
821 | ||
822 | static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
823 | { | |
3176ff3e | 824 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
825 | struct netxen_hardware_context *hw = &adapter->ahw; |
826 | unsigned int first_seg_len = skb->len - skb->data_len; | |
827 | struct netxen_skb_frag *buffrag; | |
828 | unsigned int i; | |
829 | ||
830 | u32 producer = 0; | |
831 | u32 saved_producer = 0; | |
832 | struct cmd_desc_type0 *hwdesc; | |
833 | int k; | |
834 | struct netxen_cmd_buffer *pbuf = NULL; | |
3d396eb1 AK |
835 | static int dropped_packet = 0; |
836 | int frag_count; | |
837 | u32 local_producer = 0; | |
838 | u32 max_tx_desc_count = 0; | |
839 | u32 last_cmd_consumer = 0; | |
840 | int no_of_desc; | |
841 | ||
3176ff3e | 842 | adapter->stats.xmitcalled++; |
3d396eb1 AK |
843 | frag_count = skb_shinfo(skb)->nr_frags + 1; |
844 | ||
845 | if (unlikely(skb->len <= 0)) { | |
846 | dev_kfree_skb_any(skb); | |
3176ff3e | 847 | adapter->stats.badskblen++; |
3d396eb1 AK |
848 | return NETDEV_TX_OK; |
849 | } | |
850 | ||
851 | if (frag_count > MAX_BUFFERS_PER_CMD) { | |
852 | printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)" | |
853 | "too large, can handle only %d frags\n", | |
854 | netxen_nic_driver_name, netdev->name, | |
855 | frag_count, MAX_BUFFERS_PER_CMD); | |
3176ff3e | 856 | adapter->stats.txdropped++; |
3d396eb1 AK |
857 | if ((++dropped_packet & 0xff) == 0xff) |
858 | printk("%s: %s droppped packets = %d\n", | |
859 | netxen_nic_driver_name, netdev->name, | |
860 | dropped_packet); | |
861 | ||
862 | return NETDEV_TX_OK; | |
863 | } | |
864 | ||
865 | /* | |
866 | * Everything is set up. Now, we just need to transmit it out. | |
867 | * Note that we have to copy the contents of buffer over to | |
868 | * right place. Later on, this can be optimized out by de-coupling the | |
869 | * producer index from the buffer index. | |
870 | */ | |
871 | retry_getting_window: | |
872 | spin_lock_bh(&adapter->tx_lock); | |
3176ff3e | 873 | if (adapter->total_threads >= MAX_XMIT_PRODUCERS) { |
3d396eb1 AK |
874 | spin_unlock_bh(&adapter->tx_lock); |
875 | /* | |
876 | * Yield CPU | |
877 | */ | |
878 | if (!in_atomic()) | |
879 | schedule(); | |
880 | else { | |
881 | for (i = 0; i < 20; i++) | |
882 | cpu_relax(); /*This a nop instr on i386 */ | |
883 | } | |
884 | goto retry_getting_window; | |
885 | } | |
886 | local_producer = adapter->cmd_producer; | |
887 | /* There 4 fragments per descriptor */ | |
888 | no_of_desc = (frag_count + 3) >> 2; | |
cb8011ad AK |
889 | if (netdev->features & NETIF_F_TSO) { |
890 | if (skb_shinfo(skb)->gso_size > 0) { | |
891 | ||
3d396eb1 | 892 | no_of_desc++; |
ab6a5bb6 | 893 | if ((ip_hdrlen(skb) + tcp_hdrlen(skb) + |
c9bdd4b5 | 894 | sizeof(struct ethhdr)) > |
ed25ffa1 | 895 | (sizeof(struct cmd_desc_type0) - 2)) { |
cb8011ad AK |
896 | no_of_desc++; |
897 | } | |
3d396eb1 AK |
898 | } |
899 | } | |
900 | k = adapter->cmd_producer; | |
901 | max_tx_desc_count = adapter->max_tx_desc_count; | |
902 | last_cmd_consumer = adapter->last_cmd_consumer; | |
903 | if ((k + no_of_desc) >= | |
904 | ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count : | |
905 | last_cmd_consumer)) { | |
ed25ffa1 | 906 | netif_stop_queue(netdev); |
3176ff3e | 907 | adapter->flags |= NETXEN_NETDEV_STATUS; |
3d396eb1 | 908 | spin_unlock_bh(&adapter->tx_lock); |
ed25ffa1 | 909 | return NETDEV_TX_BUSY; |
3d396eb1 AK |
910 | } |
911 | k = get_index_range(k, max_tx_desc_count, no_of_desc); | |
912 | adapter->cmd_producer = k; | |
913 | adapter->total_threads++; | |
914 | adapter->num_threads++; | |
915 | ||
916 | spin_unlock_bh(&adapter->tx_lock); | |
917 | /* Copy the descriptors into the hardware */ | |
918 | producer = local_producer; | |
919 | saved_producer = producer; | |
920 | hwdesc = &hw->cmd_desc_head[producer]; | |
921 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
922 | /* Take skb->data itself */ | |
923 | pbuf = &adapter->cmd_buf_arr[producer]; | |
cb8011ad | 924 | if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) { |
a608ab9c | 925 | pbuf->mss = skb_shinfo(skb)->gso_size; |
ed33ebe4 | 926 | hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
3d396eb1 AK |
927 | } else { |
928 | pbuf->mss = 0; | |
929 | hwdesc->mss = 0; | |
930 | } | |
3d396eb1 AK |
931 | pbuf->total_length = skb->len; |
932 | pbuf->skb = skb; | |
933 | pbuf->cmd = TX_ETHER_PKT; | |
934 | pbuf->frag_count = frag_count; | |
3176ff3e | 935 | pbuf->port = adapter->portnum; |
3d396eb1 | 936 | buffrag = &pbuf->frag_array[0]; |
3176ff3e | 937 | buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len, |
3d396eb1 AK |
938 | PCI_DMA_TODEVICE); |
939 | buffrag->length = first_seg_len; | |
ed25ffa1 AK |
940 | netxen_set_cmd_desc_totallength(hwdesc, skb->len); |
941 | netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count); | |
942 | netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT); | |
3d396eb1 | 943 | |
3176ff3e | 944 | netxen_set_cmd_desc_port(hwdesc, adapter->portnum); |
6c80b18d | 945 | netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum); |
3d396eb1 AK |
946 | hwdesc->buffer1_length = cpu_to_le16(first_seg_len); |
947 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
948 | ||
949 | for (i = 1, k = 1; i < frag_count; i++, k++) { | |
950 | struct skb_frag_struct *frag; | |
951 | int len, temp_len; | |
952 | unsigned long offset; | |
953 | dma_addr_t temp_dma; | |
954 | ||
955 | /* move to next desc. if there is a need */ | |
956 | if ((i & 0x3) == 0) { | |
957 | k = 0; | |
958 | producer = get_next_index(producer, | |
959 | adapter->max_tx_desc_count); | |
960 | hwdesc = &hw->cmd_desc_head[producer]; | |
961 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
962 | } | |
963 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
964 | len = frag->size; | |
965 | offset = frag->page_offset; | |
966 | ||
967 | temp_len = len; | |
3176ff3e | 968 | temp_dma = pci_map_page(adapter->pdev, frag->page, offset, |
3d396eb1 AK |
969 | len, PCI_DMA_TODEVICE); |
970 | ||
971 | buffrag++; | |
972 | buffrag->dma = temp_dma; | |
973 | buffrag->length = temp_len; | |
974 | ||
975 | DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k); | |
976 | switch (k) { | |
977 | case 0: | |
978 | hwdesc->buffer1_length = cpu_to_le16(temp_len); | |
979 | hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); | |
980 | break; | |
981 | case 1: | |
982 | hwdesc->buffer2_length = cpu_to_le16(temp_len); | |
983 | hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); | |
984 | break; | |
985 | case 2: | |
986 | hwdesc->buffer3_length = cpu_to_le16(temp_len); | |
987 | hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); | |
988 | break; | |
989 | case 3: | |
a608ab9c | 990 | hwdesc->buffer4_length = cpu_to_le16(temp_len); |
3d396eb1 AK |
991 | hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); |
992 | break; | |
993 | } | |
994 | frag++; | |
995 | } | |
996 | producer = get_next_index(producer, adapter->max_tx_desc_count); | |
997 | ||
998 | /* might change opcode to TX_TCP_LSO */ | |
999 | netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb); | |
1000 | ||
1001 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
1002 | * the descriptor ring | |
1003 | */ | |
ed25ffa1 AK |
1004 | if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer]) |
1005 | == TX_TCP_LSO) { | |
3d396eb1 AK |
1006 | int hdr_len, first_hdr_len, more_hdr; |
1007 | hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length; | |
ed25ffa1 AK |
1008 | if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) { |
1009 | first_hdr_len = sizeof(struct cmd_desc_type0) - 2; | |
3d396eb1 AK |
1010 | more_hdr = 1; |
1011 | } else { | |
1012 | first_hdr_len = hdr_len; | |
1013 | more_hdr = 0; | |
1014 | } | |
1015 | /* copy the MAC/IP/TCP headers to the cmd descriptor list */ | |
1016 | hwdesc = &hw->cmd_desc_head[producer]; | |
1017 | ||
1018 | /* copy the first 64 bytes */ | |
ed25ffa1 | 1019 | memcpy(((void *)hwdesc) + 2, |
3d396eb1 AK |
1020 | (void *)(skb->data), first_hdr_len); |
1021 | producer = get_next_index(producer, max_tx_desc_count); | |
1022 | ||
1023 | if (more_hdr) { | |
1024 | hwdesc = &hw->cmd_desc_head[producer]; | |
1025 | /* copy the next 64 bytes - should be enough except | |
1026 | * for pathological case | |
1027 | */ | |
d626f62b ACM |
1028 | skb_copy_from_linear_data_offset(skb, first_hdr_len, |
1029 | hwdesc, | |
1030 | (hdr_len - | |
1031 | first_hdr_len)); | |
3d396eb1 AK |
1032 | producer = get_next_index(producer, max_tx_desc_count); |
1033 | } | |
1034 | } | |
6c80b18d MT |
1035 | |
1036 | i = netxen_get_cmd_desc_totallength(&hw->cmd_desc_head[saved_producer]); | |
1037 | ||
1038 | hw->cmd_desc_head[saved_producer].flags_opcode = | |
1039 | cpu_to_le16(hw->cmd_desc_head[saved_producer].flags_opcode); | |
1040 | hw->cmd_desc_head[saved_producer].num_of_buffers_total_length = | |
1041 | cpu_to_le32(hw->cmd_desc_head[saved_producer]. | |
1042 | num_of_buffers_total_length); | |
1043 | ||
3d396eb1 | 1044 | spin_lock_bh(&adapter->tx_lock); |
6c80b18d MT |
1045 | adapter->stats.txbytes += i; |
1046 | ||
3d396eb1 AK |
1047 | /* Code to update the adapter considering how many producer threads |
1048 | are currently working */ | |
1049 | if ((--adapter->num_threads) == 0) { | |
1050 | /* This is the last thread */ | |
1051 | u32 crb_producer = adapter->cmd_producer; | |
3176ff3e | 1052 | netxen_nic_update_cmd_producer(adapter, crb_producer); |
3d396eb1 AK |
1053 | wmb(); |
1054 | adapter->total_threads = 0; | |
3d396eb1 AK |
1055 | } |
1056 | ||
3176ff3e | 1057 | adapter->stats.xmitfinished++; |
3d396eb1 AK |
1058 | spin_unlock_bh(&adapter->tx_lock); |
1059 | ||
1060 | netdev->trans_start = jiffies; | |
1061 | ||
1062 | DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer); | |
1063 | ||
1064 | DPRINTK(INFO, "Done. Send\n"); | |
1065 | return NETDEV_TX_OK; | |
1066 | } | |
1067 | ||
1068 | static void netxen_watchdog(unsigned long v) | |
1069 | { | |
1070 | struct netxen_adapter *adapter = (struct netxen_adapter *)v; | |
ed25ffa1 AK |
1071 | |
1072 | SCHEDULE_WORK(&adapter->watchdog_task); | |
3d396eb1 AK |
1073 | } |
1074 | ||
1075 | static void netxen_tx_timeout(struct net_device *netdev) | |
1076 | { | |
3176ff3e MT |
1077 | struct netxen_adapter *adapter = (struct netxen_adapter *) |
1078 | netdev_priv(netdev); | |
1079 | SCHEDULE_WORK(&adapter->tx_timeout_task); | |
3d396eb1 AK |
1080 | } |
1081 | ||
6d5aefb8 | 1082 | static void netxen_tx_timeout_task(struct work_struct *work) |
3d396eb1 | 1083 | { |
3176ff3e MT |
1084 | struct netxen_adapter *adapter = |
1085 | container_of(work, struct netxen_adapter, tx_timeout_task); | |
3d396eb1 AK |
1086 | unsigned long flags; |
1087 | ||
1088 | printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", | |
6c80b18d | 1089 | netxen_nic_driver_name, adapter->netdev->name); |
3d396eb1 | 1090 | |
3176ff3e | 1091 | spin_lock_irqsave(&adapter->lock, flags); |
6c80b18d MT |
1092 | netxen_nic_close(adapter->netdev); |
1093 | netxen_nic_open(adapter->netdev); | |
3176ff3e | 1094 | spin_unlock_irqrestore(&adapter->lock, flags); |
6c80b18d MT |
1095 | adapter->netdev->trans_start = jiffies; |
1096 | netif_wake_queue(adapter->netdev); | |
3d396eb1 AK |
1097 | } |
1098 | ||
1099 | static int | |
1100 | netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev) | |
1101 | { | |
1102 | u32 ret = 0; | |
1103 | ||
1104 | DPRINTK(INFO, "Entered handle ISR\n"); | |
595e3fb8 | 1105 | adapter->stats.ints++; |
3d396eb1 | 1106 | |
3d396eb1 AK |
1107 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { |
1108 | int count = 0; | |
1109 | u32 mask; | |
3176ff3e MT |
1110 | u32 our_int = 0; |
1111 | our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR)); | |
1112 | /* not our interrupt */ | |
1113 | if ((our_int & (0x80 << adapter->portnum)) == 0) | |
ed25ffa1 | 1114 | return ret; |
3d396eb1 AK |
1115 | netxen_nic_disable_int(adapter); |
1116 | /* Window = 0 or 1 */ | |
1117 | do { | |
71bd7877 AK |
1118 | writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter, |
1119 | ISR_INT_TARGET_STATUS)); | |
1120 | mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); | |
3d396eb1 AK |
1121 | } while (((mask & 0x80) != 0) && (++count < 32)); |
1122 | if ((mask & 0x80) != 0) | |
1123 | printk("Could not disable interrupt completely\n"); | |
1124 | ||
1125 | } | |
3d396eb1 AK |
1126 | |
1127 | if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) { | |
1128 | if (netif_rx_schedule_prep(netdev)) { | |
1129 | /* | |
1130 | * Interrupts are already disabled. | |
1131 | */ | |
1132 | __netif_rx_schedule(netdev); | |
1133 | } else { | |
1134 | static unsigned int intcount = 0; | |
1135 | if ((++intcount & 0xfff) == 0xfff) | |
1136 | printk(KERN_ERR | |
1137 | "%s: %s interrupt %d while in poll\n", | |
1138 | netxen_nic_driver_name, netdev->name, | |
1139 | intcount); | |
1140 | } | |
1141 | ret = 1; | |
1142 | } | |
1143 | ||
1144 | if (ret == 0) { | |
1145 | netxen_nic_enable_int(adapter); | |
1146 | } | |
1147 | ||
1148 | return ret; | |
1149 | } | |
1150 | ||
1151 | /* | |
1152 | * netxen_intr - Interrupt Handler | |
1153 | * @irq: interrupt number | |
1154 | * data points to adapter stucture (which may be handling more than 1 port | |
1155 | */ | |
1494a814 | 1156 | irqreturn_t netxen_intr(int irq, void *data) |
3d396eb1 AK |
1157 | { |
1158 | struct netxen_adapter *adapter; | |
3d396eb1 | 1159 | struct net_device *netdev; |
3d396eb1 AK |
1160 | |
1161 | if (unlikely(!irq)) { | |
1162 | return IRQ_NONE; /* Not our interrupt */ | |
1163 | } | |
1164 | ||
1165 | adapter = (struct netxen_adapter *)data; | |
3176ff3e MT |
1166 | netdev = adapter->netdev; |
1167 | /* process our status queue (for all 4 ports) */ | |
1168 | if (netif_running(netdev)) | |
1169 | netxen_handle_int(adapter, netdev); | |
3d396eb1 AK |
1170 | |
1171 | return IRQ_HANDLED; | |
1172 | } | |
1173 | ||
1174 | static int netxen_nic_poll(struct net_device *netdev, int *budget) | |
1175 | { | |
3176ff3e | 1176 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 AK |
1177 | int work_to_do = min(*budget, netdev->quota); |
1178 | int done = 1; | |
1179 | int ctx; | |
1180 | int this_work_done; | |
80922fbc | 1181 | int work_done = 0; |
3d396eb1 AK |
1182 | |
1183 | DPRINTK(INFO, "polling for %d descriptors\n", *budget); | |
3d396eb1 | 1184 | |
80922fbc | 1185 | work_done = 0; |
3d396eb1 AK |
1186 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
1187 | /* | |
1188 | * Fairness issue. This will give undue weight to the | |
1189 | * receive context 0. | |
1190 | */ | |
1191 | ||
1192 | /* | |
1193 | * To avoid starvation, we give each of our receivers, | |
1194 | * a fraction of the quota. Sometimes, it might happen that we | |
1195 | * have enough quota to process every packet, but since all the | |
1196 | * packets are on one context, it gets only half of the quota, | |
1197 | * and ends up not processing it. | |
1198 | */ | |
1199 | this_work_done = netxen_process_rcv_ring(adapter, ctx, | |
1200 | work_to_do / | |
1201 | MAX_RCV_CTX); | |
80922fbc | 1202 | work_done += this_work_done; |
3d396eb1 AK |
1203 | } |
1204 | ||
80922fbc AK |
1205 | netdev->quota -= work_done; |
1206 | *budget -= work_done; | |
3d396eb1 | 1207 | |
ed25ffa1 | 1208 | if (work_done >= work_to_do && netxen_nic_rx_has_work(adapter) != 0) |
3d396eb1 AK |
1209 | done = 0; |
1210 | ||
ed25ffa1 AK |
1211 | if (netxen_process_cmd_ring((unsigned long)adapter) == 0) |
1212 | done = 0; | |
3d396eb1 AK |
1213 | |
1214 | DPRINTK(INFO, "new work_done: %d work_to_do: %d\n", | |
80922fbc | 1215 | work_done, work_to_do); |
3d396eb1 AK |
1216 | if (done) { |
1217 | netif_rx_complete(netdev); | |
1218 | netxen_nic_enable_int(adapter); | |
1219 | } | |
1220 | ||
edf90163 | 1221 | return !done; |
3d396eb1 AK |
1222 | } |
1223 | ||
1224 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1225 | static void netxen_nic_poll_controller(struct net_device *netdev) | |
1226 | { | |
3176ff3e | 1227 | struct netxen_adapter *adapter = netdev_priv(netdev); |
3d396eb1 | 1228 | disable_irq(adapter->irq); |
1494a814 | 1229 | netxen_intr(adapter->irq, adapter); |
3d396eb1 AK |
1230 | enable_irq(adapter->irq); |
1231 | } | |
1232 | #endif | |
3d396eb1 AK |
1233 | |
1234 | static struct pci_driver netxen_driver = { | |
1235 | .name = netxen_nic_driver_name, | |
1236 | .id_table = netxen_pci_tbl, | |
1237 | .probe = netxen_nic_probe, | |
1238 | .remove = __devexit_p(netxen_nic_remove) | |
1239 | }; | |
1240 | ||
1241 | /* Driver Registration on NetXen card */ | |
1242 | ||
1243 | static int __init netxen_init_module(void) | |
1244 | { | |
ed25ffa1 AK |
1245 | if ((netxen_workq = create_singlethread_workqueue("netxen")) == 0) |
1246 | return -ENOMEM; | |
1247 | ||
184231bd | 1248 | return pci_register_driver(&netxen_driver); |
3d396eb1 AK |
1249 | } |
1250 | ||
1251 | module_init(netxen_init_module); | |
1252 | ||
1253 | static void __exit netxen_exit_module(void) | |
1254 | { | |
1255 | /* | |
1256 | * Wait for some time to allow the dma to drain, if any. | |
1257 | */ | |
3d396eb1 | 1258 | pci_unregister_driver(&netxen_driver); |
9de06610 | 1259 | destroy_workqueue(netxen_workq); |
3d396eb1 AK |
1260 | } |
1261 | ||
1262 | module_exit(netxen_exit_module); |