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" | |
39 | #define DEFINE_GLOBAL_RECV_CRB | |
40 | #include "netxen_nic_phan_reg.h" | |
3d396eb1 | 41 | |
1494a814 JG |
42 | #include <linux/dma-mapping.h> |
43 | #include <linux/vmalloc.h> | |
c9bdd4b5 | 44 | #include <net/ip.h> |
1494a814 | 45 | |
3d396eb1 AK |
46 | MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver"); |
47 | MODULE_LICENSE("GPL"); | |
48 | MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID); | |
49 | ||
ed25ffa1 | 50 | char netxen_nic_driver_name[] = "netxen-nic"; |
3d396eb1 | 51 | static char netxen_nic_driver_string[] = "NetXen Network Driver version " |
cb8011ad | 52 | NETXEN_NIC_LINUX_VERSIONID; |
3d396eb1 AK |
53 | |
54 | #define NETXEN_NETDEV_WEIGHT 120 | |
55 | #define NETXEN_ADAPTER_UP_MAGIC 777 | |
cb8011ad | 56 | #define NETXEN_NIC_PEG_TUNE 0 |
3d396eb1 | 57 | |
ed25ffa1 AK |
58 | u8 nx_p2_id = NX_P2_C0; |
59 | ||
60 | #define DMA_32BIT_MASK 0x00000000ffffffffULL | |
61 | #define DMA_35BIT_MASK 0x00000007ffffffffULL | |
62 | ||
3d396eb1 AK |
63 | /* Local functions to NetXen NIC driver */ |
64 | static int __devinit netxen_nic_probe(struct pci_dev *pdev, | |
65 | const struct pci_device_id *ent); | |
66 | static void __devexit netxen_nic_remove(struct pci_dev *pdev); | |
67 | static int netxen_nic_open(struct net_device *netdev); | |
68 | static int netxen_nic_close(struct net_device *netdev); | |
69 | static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *); | |
70 | static void netxen_tx_timeout(struct net_device *netdev); | |
6d5aefb8 | 71 | static void netxen_tx_timeout_task(struct work_struct *work); |
3d396eb1 AK |
72 | static void netxen_watchdog(unsigned long); |
73 | static int netxen_handle_int(struct netxen_adapter *, struct net_device *); | |
3d396eb1 AK |
74 | static int netxen_nic_poll(struct net_device *dev, int *budget); |
75 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
76 | static void netxen_nic_poll_controller(struct net_device *netdev); | |
77 | #endif | |
1494a814 | 78 | static irqreturn_t netxen_intr(int irq, void *data); |
3d396eb1 AK |
79 | |
80 | /* PCI Device ID Table */ | |
81 | static struct pci_device_id netxen_pci_tbl[] __devinitdata = { | |
82 | {PCI_DEVICE(0x4040, 0x0001)}, | |
83 | {PCI_DEVICE(0x4040, 0x0002)}, | |
84 | {PCI_DEVICE(0x4040, 0x0003)}, | |
85 | {PCI_DEVICE(0x4040, 0x0004)}, | |
86 | {PCI_DEVICE(0x4040, 0x0005)}, | |
0d390734 AK |
87 | {PCI_DEVICE(0x4040, 0x0024)}, |
88 | {PCI_DEVICE(0x4040, 0x0025)}, | |
3d396eb1 AK |
89 | {0,} |
90 | }; | |
91 | ||
92 | MODULE_DEVICE_TABLE(pci, netxen_pci_tbl); | |
93 | ||
ed25ffa1 AK |
94 | struct workqueue_struct *netxen_workq; |
95 | static void netxen_watchdog(unsigned long); | |
96 | ||
3d396eb1 AK |
97 | /* |
98 | * netxen_nic_probe() | |
99 | * | |
100 | * The Linux system will invoke this after identifying the vendor ID and | |
101 | * device Id in the pci_tbl supported by this module. | |
102 | * | |
103 | * A quad port card has one operational PCI config space, (function 0), | |
104 | * which is used to access all four ports. | |
105 | * | |
106 | * This routine will initialize the adapter, and setup the global parameters | |
107 | * along with the port's specific structure. | |
108 | */ | |
109 | static int __devinit | |
110 | netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
111 | { | |
112 | struct net_device *netdev = NULL; | |
113 | struct netxen_adapter *adapter = NULL; | |
114 | struct netxen_port *port = NULL; | |
ed25ffa1 AK |
115 | void __iomem *mem_ptr0 = NULL; |
116 | void __iomem *mem_ptr1 = NULL; | |
117 | void __iomem *mem_ptr2 = NULL; | |
cb8011ad | 118 | |
a608ab9c | 119 | u8 __iomem *db_ptr = NULL; |
ed25ffa1 | 120 | unsigned long mem_base, mem_len, db_base, db_len; |
3d396eb1 AK |
121 | int pci_using_dac, i, err; |
122 | int ring; | |
123 | struct netxen_recv_context *recv_ctx = NULL; | |
124 | struct netxen_rcv_desc_ctx *rcv_desc = NULL; | |
125 | struct netxen_cmd_buffer *cmd_buf_arr = NULL; | |
126 | u64 mac_addr[FLASH_NUM_PORTS + 1]; | |
ed25ffa1 | 127 | int valid_mac = 0; |
3d396eb1 | 128 | |
cb8011ad | 129 | printk(KERN_INFO "%s \n", netxen_nic_driver_string); |
ed25ffa1 AK |
130 | /* In current scheme, we use only PCI function 0 */ |
131 | if (PCI_FUNC(pdev->devfn) != 0) { | |
132 | DPRINTK(ERR, "NetXen function %d will not be enabled.\n", | |
133 | PCI_FUNC(pdev->devfn)); | |
134 | return -ENODEV; | |
135 | } | |
3d396eb1 AK |
136 | if ((err = pci_enable_device(pdev))) |
137 | return err; | |
138 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
139 | err = -ENODEV; | |
140 | goto err_out_disable_pdev; | |
141 | } | |
142 | ||
143 | if ((err = pci_request_regions(pdev, netxen_nic_driver_name))) | |
144 | goto err_out_disable_pdev; | |
145 | ||
146 | pci_set_master(pdev); | |
ed25ffa1 AK |
147 | pci_read_config_byte(pdev, PCI_REVISION_ID, &nx_p2_id); |
148 | if (nx_p2_id == NX_P2_C1 && | |
149 | (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) && | |
150 | (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) { | |
3d396eb1 | 151 | pci_using_dac = 1; |
ed25ffa1 | 152 | } else { |
3d396eb1 AK |
153 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) || |
154 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) | |
155 | goto err_out_free_res; | |
156 | ||
157 | pci_using_dac = 0; | |
158 | } | |
159 | ||
160 | /* remap phys address */ | |
161 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
162 | mem_len = pci_resource_len(pdev, 0); | |
163 | ||
164 | /* 128 Meg of memory */ | |
cb8011ad AK |
165 | mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); |
166 | mem_ptr1 = | |
167 | ioremap(mem_base + SECOND_PAGE_GROUP_START, SECOND_PAGE_GROUP_SIZE); | |
168 | mem_ptr2 = | |
169 | ioremap(mem_base + THIRD_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); | |
170 | ||
171 | if ((mem_ptr0 == 0UL) || (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) { | |
ed25ffa1 | 172 | DPRINTK(ERR, |
cb8011ad AK |
173 | "Cannot remap adapter memory aborting.:" |
174 | "0 -> %p, 1 -> %p, 2 -> %p\n", | |
175 | mem_ptr0, mem_ptr1, mem_ptr2); | |
176 | ||
3d396eb1 | 177 | err = -EIO; |
ed25ffa1 AK |
178 | goto err_out_iounmap; |
179 | } | |
180 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ | |
181 | db_len = pci_resource_len(pdev, 4); | |
182 | ||
183 | if (db_len == 0) { | |
184 | printk(KERN_ERR "%s: doorbell is disabled\n", | |
185 | netxen_nic_driver_name); | |
186 | err = -EIO; | |
187 | goto err_out_iounmap; | |
188 | } | |
189 | DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base, | |
190 | db_len); | |
191 | ||
192 | db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); | |
a608ab9c | 193 | if (!db_ptr) { |
ed25ffa1 AK |
194 | printk(KERN_ERR "%s: Failed to allocate doorbell map.", |
195 | netxen_nic_driver_name); | |
196 | err = -EIO; | |
197 | goto err_out_iounmap; | |
3d396eb1 | 198 | } |
ed25ffa1 | 199 | DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr); |
3d396eb1 AK |
200 | |
201 | /* | |
202 | * Allocate a adapter structure which will manage all the initialization | |
203 | * as well as the common resources for all ports... | |
204 | * all the ports will have pointer to this adapter as well as Adapter | |
205 | * will have pointers of all the ports structures. | |
206 | */ | |
207 | ||
208 | /* One adapter structure for all 4 ports.... */ | |
209 | adapter = kzalloc(sizeof(struct netxen_adapter), GFP_KERNEL); | |
210 | if (adapter == NULL) { | |
211 | printk(KERN_ERR "%s: Could not allocate adapter memory:%d\n", | |
212 | netxen_nic_driver_name, | |
213 | (int)sizeof(struct netxen_adapter)); | |
214 | err = -ENOMEM; | |
ed25ffa1 | 215 | goto err_out_dbunmap; |
3d396eb1 AK |
216 | } |
217 | ||
218 | adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS; | |
219 | adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS; | |
220 | adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS; | |
ed25ffa1 | 221 | adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; |
3d396eb1 AK |
222 | |
223 | pci_set_drvdata(pdev, adapter); | |
224 | ||
225 | cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE); | |
226 | if (cmd_buf_arr == NULL) { | |
ed25ffa1 AK |
227 | printk(KERN_ERR |
228 | "%s: Could not allocate cmd_buf_arr memory:%d\n", | |
229 | netxen_nic_driver_name, (int)TX_RINGSIZE); | |
3d396eb1 AK |
230 | err = -ENOMEM; |
231 | goto err_out_free_adapter; | |
232 | } | |
233 | memset(cmd_buf_arr, 0, TX_RINGSIZE); | |
234 | ||
235 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
236 | recv_ctx = &adapter->recv_ctx[i]; | |
237 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
238 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
239 | switch (RCV_DESC_TYPE(ring)) { | |
240 | case RCV_DESC_NORMAL: | |
241 | rcv_desc->max_rx_desc_count = | |
242 | adapter->max_rx_desc_count; | |
243 | rcv_desc->flags = RCV_DESC_NORMAL; | |
244 | rcv_desc->dma_size = RX_DMA_MAP_LEN; | |
245 | rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH; | |
246 | break; | |
247 | ||
248 | case RCV_DESC_JUMBO: | |
249 | rcv_desc->max_rx_desc_count = | |
250 | adapter->max_jumbo_rx_desc_count; | |
251 | rcv_desc->flags = RCV_DESC_JUMBO; | |
252 | rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN; | |
253 | rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH; | |
254 | break; | |
255 | ||
ed25ffa1 AK |
256 | case RCV_RING_LRO: |
257 | rcv_desc->max_rx_desc_count = | |
258 | adapter->max_lro_rx_desc_count; | |
259 | rcv_desc->flags = RCV_DESC_LRO; | |
260 | rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN; | |
261 | rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH; | |
262 | break; | |
263 | ||
3d396eb1 AK |
264 | } |
265 | rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *) | |
266 | vmalloc(RCV_BUFFSIZE); | |
267 | ||
268 | if (rcv_desc->rx_buf_arr == NULL) { | |
ed25ffa1 AK |
269 | printk(KERN_ERR "%s: Could not allocate" |
270 | "rcv_desc->rx_buf_arr memory:%d\n", | |
271 | netxen_nic_driver_name, | |
272 | (int)RCV_BUFFSIZE); | |
3d396eb1 AK |
273 | err = -ENOMEM; |
274 | goto err_out_free_rx_buffer; | |
275 | } | |
276 | memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE); | |
277 | } | |
278 | ||
279 | } | |
280 | ||
3d396eb1 | 281 | adapter->cmd_buf_arr = cmd_buf_arr; |
cb8011ad AK |
282 | adapter->ahw.pci_base0 = mem_ptr0; |
283 | adapter->ahw.pci_base1 = mem_ptr1; | |
284 | adapter->ahw.pci_base2 = mem_ptr2; | |
ed25ffa1 AK |
285 | adapter->ahw.db_base = db_ptr; |
286 | adapter->ahw.db_len = db_len; | |
3d396eb1 AK |
287 | spin_lock_init(&adapter->tx_lock); |
288 | spin_lock_init(&adapter->lock); | |
ed25ffa1 | 289 | netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */ |
cb8011ad AK |
290 | #ifdef CONFIG_IA64 |
291 | netxen_pinit_from_rom(adapter, 0); | |
292 | udelay(500); | |
293 | netxen_load_firmware(adapter); | |
294 | #endif | |
295 | ||
3d396eb1 AK |
296 | /* |
297 | * Set the CRB window to invalid. If any register in window 0 is | |
298 | * accessed it should set the window to 0 and then reset it to 1. | |
299 | */ | |
300 | adapter->curr_window = 255; | |
301 | /* | |
302 | * Adapter in our case is quad port so initialize it before | |
303 | * initializing the ports | |
304 | */ | |
305 | netxen_initialize_adapter_hw(adapter); /* initialize the adapter */ | |
306 | ||
307 | netxen_initialize_adapter_ops(adapter); | |
308 | ||
309 | init_timer(&adapter->watchdog_timer); | |
310 | adapter->ahw.xg_linkup = 0; | |
311 | adapter->watchdog_timer.function = &netxen_watchdog; | |
312 | adapter->watchdog_timer.data = (unsigned long)adapter; | |
6d5aefb8 | 313 | INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task); |
3d396eb1 AK |
314 | adapter->ahw.pdev = pdev; |
315 | adapter->proc_cmd_buf_counter = 0; | |
ed25ffa1 | 316 | adapter->ahw.revision_id = nx_p2_id; |
3d396eb1 AK |
317 | |
318 | if (pci_enable_msi(pdev)) { | |
319 | adapter->flags &= ~NETXEN_NIC_MSI_ENABLED; | |
320 | printk(KERN_WARNING "%s: unable to allocate MSI interrupt" | |
321 | " error\n", netxen_nic_driver_name); | |
322 | } else | |
323 | adapter->flags |= NETXEN_NIC_MSI_ENABLED; | |
324 | ||
325 | if (netxen_is_flash_supported(adapter) == 0 && | |
326 | netxen_get_flash_mac_addr(adapter, mac_addr) == 0) | |
327 | valid_mac = 1; | |
328 | else | |
329 | valid_mac = 0; | |
330 | ||
cb8011ad AK |
331 | /* |
332 | * Initialize all the CRB registers here. | |
333 | */ | |
334 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_PRODUCER_OFFSET)); | |
335 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_CONSUMER_OFFSET)); | |
336 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO)); | |
337 | ||
ed25ffa1 AK |
338 | /* do this before waking up pegs so that we have valid dummy dma addr */ |
339 | err = netxen_initialize_adapter_offload(adapter); | |
340 | if (err) { | |
341 | goto err_out_free_dev; | |
342 | } | |
343 | ||
cb8011ad AK |
344 | /* Unlock the HW, prompting the boot sequence */ |
345 | writel(1, | |
346 | NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE)); | |
347 | ||
348 | /* Handshake with the card before we register the devices. */ | |
349 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
350 | ||
3d396eb1 | 351 | /* initialize the all the ports */ |
ed25ffa1 | 352 | adapter->active_ports = 0; |
3d396eb1 AK |
353 | |
354 | for (i = 0; i < adapter->ahw.max_ports; i++) { | |
355 | netdev = alloc_etherdev(sizeof(struct netxen_port)); | |
356 | if (!netdev) { | |
357 | printk(KERN_ERR "%s: could not allocate netdev for port" | |
358 | " %d\n", netxen_nic_driver_name, i + 1); | |
359 | goto err_out_free_dev; | |
360 | } | |
361 | ||
362 | SET_MODULE_OWNER(netdev); | |
edf90163 | 363 | SET_NETDEV_DEV(netdev, &pdev->dev); |
3d396eb1 AK |
364 | |
365 | port = netdev_priv(netdev); | |
366 | port->netdev = netdev; | |
367 | port->pdev = pdev; | |
368 | port->adapter = adapter; | |
369 | port->portnum = i; /* Gigabit port number from 0-3 */ | |
370 | ||
371 | netdev->open = netxen_nic_open; | |
372 | netdev->stop = netxen_nic_close; | |
373 | netdev->hard_start_xmit = netxen_nic_xmit_frame; | |
374 | netdev->get_stats = netxen_nic_get_stats; | |
375 | netdev->set_multicast_list = netxen_nic_set_multi; | |
376 | netdev->set_mac_address = netxen_nic_set_mac; | |
377 | netdev->change_mtu = netxen_nic_change_mtu; | |
3d396eb1 AK |
378 | netdev->tx_timeout = netxen_tx_timeout; |
379 | netdev->watchdog_timeo = HZ; | |
380 | ||
0c25cfe1 LCMT |
381 | netxen_nic_change_mtu(netdev, netdev->mtu); |
382 | ||
3d396eb1 AK |
383 | SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops); |
384 | netdev->poll = netxen_nic_poll; | |
385 | netdev->weight = NETXEN_NETDEV_WEIGHT; | |
386 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
387 | netdev->poll_controller = netxen_nic_poll_controller; | |
388 | #endif | |
389 | /* ScatterGather support */ | |
390 | netdev->features = NETIF_F_SG; | |
391 | netdev->features |= NETIF_F_IP_CSUM; | |
392 | netdev->features |= NETIF_F_TSO; | |
393 | ||
394 | if (pci_using_dac) | |
395 | netdev->features |= NETIF_F_HIGHDMA; | |
396 | ||
397 | if (valid_mac) { | |
398 | unsigned char *p = (unsigned char *)&mac_addr[i]; | |
399 | netdev->dev_addr[0] = *(p + 5); | |
400 | netdev->dev_addr[1] = *(p + 4); | |
401 | netdev->dev_addr[2] = *(p + 3); | |
402 | netdev->dev_addr[3] = *(p + 2); | |
403 | netdev->dev_addr[4] = *(p + 1); | |
404 | netdev->dev_addr[5] = *(p + 0); | |
405 | ||
406 | memcpy(netdev->perm_addr, netdev->dev_addr, | |
407 | netdev->addr_len); | |
408 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
409 | printk(KERN_ERR "%s: Bad MAC address " | |
410 | "%02x:%02x:%02x:%02x:%02x:%02x.\n", | |
411 | netxen_nic_driver_name, | |
412 | netdev->dev_addr[0], | |
413 | netdev->dev_addr[1], | |
414 | netdev->dev_addr[2], | |
415 | netdev->dev_addr[3], | |
416 | netdev->dev_addr[4], | |
417 | netdev->dev_addr[5]); | |
418 | } else { | |
80922fbc AK |
419 | if (adapter->macaddr_set) |
420 | adapter->macaddr_set(port, | |
421 | netdev->dev_addr); | |
3d396eb1 AK |
422 | } |
423 | } | |
6c586644 | 424 | INIT_WORK(&port->tx_timeout_task, netxen_tx_timeout_task); |
3d396eb1 AK |
425 | netif_carrier_off(netdev); |
426 | netif_stop_queue(netdev); | |
427 | ||
428 | if ((err = register_netdev(netdev))) { | |
429 | printk(KERN_ERR "%s: register_netdev failed port #%d" | |
430 | " aborting\n", netxen_nic_driver_name, i + 1); | |
431 | err = -EIO; | |
432 | free_netdev(netdev); | |
433 | goto err_out_free_dev; | |
434 | } | |
435 | adapter->port_count++; | |
3d396eb1 AK |
436 | adapter->port[i] = port; |
437 | } | |
b0d541db AK |
438 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)); |
439 | netxen_pinit_from_rom(adapter, 0); | |
440 | udelay(500); | |
441 | netxen_load_firmware(adapter); | |
442 | netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); | |
3d396eb1 AK |
443 | /* |
444 | * delay a while to ensure that the Pegs are up & running. | |
445 | * Otherwise, we might see some flaky behaviour. | |
446 | */ | |
447 | udelay(100); | |
448 | ||
449 | switch (adapter->ahw.board_type) { | |
450 | case NETXEN_NIC_GBE: | |
451 | printk("%s: QUAD GbE board initialized\n", | |
452 | netxen_nic_driver_name); | |
453 | break; | |
454 | ||
455 | case NETXEN_NIC_XGBE: | |
456 | printk("%s: XGbE board initialized\n", netxen_nic_driver_name); | |
457 | break; | |
458 | } | |
459 | ||
460 | adapter->driver_mismatch = 0; | |
461 | ||
462 | return 0; | |
463 | ||
464 | err_out_free_dev: | |
465 | if (adapter->flags & NETXEN_NIC_MSI_ENABLED) | |
466 | pci_disable_msi(pdev); | |
467 | for (i = 0; i < adapter->port_count; i++) { | |
468 | port = adapter->port[i]; | |
469 | if ((port) && (port->netdev)) { | |
470 | unregister_netdev(port->netdev); | |
471 | free_netdev(port->netdev); | |
472 | } | |
473 | } | |
3d396eb1 | 474 | |
ed25ffa1 AK |
475 | netxen_free_adapter_offload(adapter); |
476 | ||
3d396eb1 AK |
477 | err_out_free_rx_buffer: |
478 | for (i = 0; i < MAX_RCV_CTX; ++i) { | |
479 | recv_ctx = &adapter->recv_ctx[i]; | |
480 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
481 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
482 | if (rcv_desc->rx_buf_arr != NULL) { | |
483 | vfree(rcv_desc->rx_buf_arr); | |
484 | rcv_desc->rx_buf_arr = NULL; | |
485 | } | |
486 | } | |
487 | } | |
3d396eb1 AK |
488 | vfree(cmd_buf_arr); |
489 | ||
3d396eb1 AK |
490 | err_out_free_adapter: |
491 | pci_set_drvdata(pdev, NULL); | |
492 | kfree(adapter); | |
493 | ||
ed25ffa1 AK |
494 | err_out_dbunmap: |
495 | if (db_ptr) | |
496 | iounmap(db_ptr); | |
497 | ||
3d396eb1 | 498 | err_out_iounmap: |
ed25ffa1 AK |
499 | if (mem_ptr0) |
500 | iounmap(mem_ptr0); | |
501 | if (mem_ptr1) | |
502 | iounmap(mem_ptr1); | |
503 | if (mem_ptr2) | |
504 | iounmap(mem_ptr2); | |
cb8011ad | 505 | |
3d396eb1 AK |
506 | err_out_free_res: |
507 | pci_release_regions(pdev); | |
508 | err_out_disable_pdev: | |
509 | pci_disable_device(pdev); | |
510 | return err; | |
511 | } | |
512 | ||
513 | static void __devexit netxen_nic_remove(struct pci_dev *pdev) | |
514 | { | |
515 | struct netxen_adapter *adapter; | |
516 | struct netxen_port *port; | |
517 | struct netxen_rx_buffer *buffer; | |
518 | struct netxen_recv_context *recv_ctx; | |
519 | struct netxen_rcv_desc_ctx *rcv_desc; | |
520 | int i; | |
521 | int ctxid, ring; | |
522 | ||
523 | adapter = pci_get_drvdata(pdev); | |
524 | if (adapter == NULL) | |
525 | return; | |
526 | ||
b1adf031 AK |
527 | if (adapter->irq) |
528 | free_irq(adapter->irq, adapter); | |
3d396eb1 AK |
529 | netxen_nic_stop_all_ports(adapter); |
530 | /* leave the hw in the same state as reboot */ | |
b0d541db | 531 | writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)); |
e0e20a1a LCMT |
532 | netxen_pinit_from_rom(adapter, 0); |
533 | udelay(500); | |
3d396eb1 | 534 | netxen_load_firmware(adapter); |
ed25ffa1 | 535 | netxen_free_adapter_offload(adapter); |
3d396eb1 | 536 | |
e0e20a1a | 537 | mdelay(1000); /* Delay for a while to drain the DMA engines */ |
3d396eb1 AK |
538 | for (i = 0; i < adapter->port_count; i++) { |
539 | port = adapter->port[i]; | |
540 | if ((port) && (port->netdev)) { | |
541 | unregister_netdev(port->netdev); | |
542 | free_netdev(port->netdev); | |
543 | } | |
544 | } | |
545 | ||
546 | if ((adapter->flags & NETXEN_NIC_MSI_ENABLED)) | |
547 | pci_disable_msi(pdev); | |
3d396eb1 AK |
548 | if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) |
549 | netxen_free_hw_resources(adapter); | |
550 | ||
ed25ffa1 | 551 | iounmap(adapter->ahw.db_base); |
cb8011ad AK |
552 | iounmap(adapter->ahw.pci_base0); |
553 | iounmap(adapter->ahw.pci_base1); | |
554 | iounmap(adapter->ahw.pci_base2); | |
3d396eb1 AK |
555 | |
556 | pci_release_regions(pdev); | |
557 | pci_disable_device(pdev); | |
e0e20a1a | 558 | pci_set_drvdata(pdev, NULL); |
3d396eb1 AK |
559 | |
560 | for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) { | |
561 | recv_ctx = &adapter->recv_ctx[ctxid]; | |
562 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) { | |
563 | rcv_desc = &recv_ctx->rcv_desc[ring]; | |
564 | for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) { | |
565 | buffer = &(rcv_desc->rx_buf_arr[i]); | |
566 | if (buffer->state == NETXEN_BUFFER_FREE) | |
567 | continue; | |
568 | pci_unmap_single(pdev, buffer->dma, | |
569 | rcv_desc->dma_size, | |
570 | PCI_DMA_FROMDEVICE); | |
571 | if (buffer->skb != NULL) | |
572 | dev_kfree_skb_any(buffer->skb); | |
573 | } | |
574 | vfree(rcv_desc->rx_buf_arr); | |
575 | } | |
576 | } | |
577 | ||
578 | vfree(adapter->cmd_buf_arr); | |
3d396eb1 AK |
579 | kfree(adapter); |
580 | } | |
581 | ||
582 | /* | |
583 | * Called when a network interface is made active | |
584 | * @returns 0 on success, negative value on failure | |
585 | */ | |
586 | static int netxen_nic_open(struct net_device *netdev) | |
587 | { | |
588 | struct netxen_port *port = netdev_priv(netdev); | |
589 | struct netxen_adapter *adapter = port->adapter; | |
3d396eb1 AK |
590 | int err = 0; |
591 | int ctx, ring; | |
592 | ||
593 | if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) { | |
594 | err = netxen_init_firmware(adapter); | |
595 | if (err != 0) { | |
596 | printk(KERN_ERR "Failed to init firmware\n"); | |
597 | return -EIO; | |
598 | } | |
599 | netxen_nic_flash_print(adapter); | |
ed25ffa1 AK |
600 | if (adapter->init_niu) |
601 | adapter->init_niu(adapter); | |
3d396eb1 AK |
602 | |
603 | /* setup all the resources for the Phantom... */ | |
604 | /* this include the descriptors for rcv, tx, and status */ | |
605 | netxen_nic_clear_stats(adapter); | |
606 | err = netxen_nic_hw_resources(adapter); | |
607 | if (err) { | |
608 | printk(KERN_ERR "Error in setting hw resources:%d\n", | |
609 | err); | |
610 | return err; | |
611 | } | |
80922fbc AK |
612 | if (adapter->init_port |
613 | && adapter->init_port(adapter, port->portnum) != 0) { | |
3d396eb1 AK |
614 | printk(KERN_ERR "%s: Failed to initialize port %d\n", |
615 | netxen_nic_driver_name, port->portnum); | |
616 | netxen_free_hw_resources(adapter); | |
617 | return -EIO; | |
618 | } | |
3d396eb1 | 619 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
cb8011ad | 620 | for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) |
3d396eb1 | 621 | netxen_post_rx_buffers(adapter, ctx, ring); |
3d396eb1 | 622 | } |
ed25ffa1 | 623 | adapter->irq = adapter->ahw.pdev->irq; |
3d396eb1 | 624 | err = request_irq(adapter->ahw.pdev->irq, &netxen_intr, |
38515e90 TG |
625 | IRQF_SHARED | IRQF_SAMPLE_RANDOM, |
626 | netdev->name, adapter); | |
3d396eb1 AK |
627 | if (err) { |
628 | printk(KERN_ERR "request_irq failed with: %d\n", err); | |
ed25ffa1 | 629 | netxen_free_hw_resources(adapter); |
3d396eb1 AK |
630 | return err; |
631 | } | |
ed25ffa1 AK |
632 | |
633 | adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; | |
634 | } | |
635 | adapter->active_ports++; | |
636 | if (adapter->active_ports == 1) { | |
3d396eb1 AK |
637 | if (!adapter->driver_mismatch) |
638 | mod_timer(&adapter->watchdog_timer, jiffies); | |
639 | ||
640 | netxen_nic_enable_int(adapter); | |
641 | } | |
642 | ||
643 | /* Done here again so that even if phantom sw overwrote it, | |
644 | * we set it */ | |
80922fbc AK |
645 | if (adapter->macaddr_set) |
646 | adapter->macaddr_set(port, netdev->dev_addr); | |
3d396eb1 AK |
647 | netxen_nic_set_link_parameters(port); |
648 | ||
649 | netxen_nic_set_multi(netdev); | |
ed25ffa1 AK |
650 | if (adapter->set_mtu) |
651 | adapter->set_mtu(port, netdev->mtu); | |
652 | ||
3d396eb1 AK |
653 | if (!adapter->driver_mismatch) |
654 | netif_start_queue(netdev); | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
659 | /* | |
660 | * netxen_nic_close - Disables a network interface entry point | |
661 | */ | |
662 | static int netxen_nic_close(struct net_device *netdev) | |
663 | { | |
664 | struct netxen_port *port = netdev_priv(netdev); | |
665 | struct netxen_adapter *adapter = port->adapter; | |
666 | int i, j; | |
667 | struct netxen_cmd_buffer *cmd_buff; | |
668 | struct netxen_skb_frag *buffrag; | |
669 | ||
670 | netif_carrier_off(netdev); | |
671 | netif_stop_queue(netdev); | |
672 | ||
3d396eb1 AK |
673 | adapter->active_ports--; |
674 | ||
675 | if (!adapter->active_ports) { | |
676 | netxen_nic_disable_int(adapter); | |
3d396eb1 AK |
677 | cmd_buff = adapter->cmd_buf_arr; |
678 | for (i = 0; i < adapter->max_tx_desc_count; i++) { | |
679 | buffrag = cmd_buff->frag_array; | |
680 | if (buffrag->dma) { | |
681 | pci_unmap_single(port->pdev, buffrag->dma, | |
682 | buffrag->length, | |
683 | PCI_DMA_TODEVICE); | |
684 | buffrag->dma = (u64) NULL; | |
685 | } | |
686 | for (j = 0; j < cmd_buff->frag_count; j++) { | |
687 | buffrag++; | |
688 | if (buffrag->dma) { | |
689 | pci_unmap_page(port->pdev, | |
690 | buffrag->dma, | |
691 | buffrag->length, | |
692 | PCI_DMA_TODEVICE); | |
693 | buffrag->dma = (u64) NULL; | |
694 | } | |
695 | } | |
696 | /* Free the skb we received in netxen_nic_xmit_frame */ | |
697 | if (cmd_buff->skb) { | |
698 | dev_kfree_skb_any(cmd_buff->skb); | |
699 | cmd_buff->skb = NULL; | |
700 | } | |
701 | cmd_buff++; | |
702 | } | |
ed25ffa1 | 703 | FLUSH_SCHEDULED_WORK(); |
3d396eb1 AK |
704 | del_timer_sync(&adapter->watchdog_timer); |
705 | } | |
706 | ||
707 | return 0; | |
708 | } | |
709 | ||
710 | static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
711 | { | |
712 | struct netxen_port *port = netdev_priv(netdev); | |
713 | struct netxen_adapter *adapter = port->adapter; | |
714 | struct netxen_hardware_context *hw = &adapter->ahw; | |
715 | unsigned int first_seg_len = skb->len - skb->data_len; | |
716 | struct netxen_skb_frag *buffrag; | |
717 | unsigned int i; | |
718 | ||
719 | u32 producer = 0; | |
720 | u32 saved_producer = 0; | |
721 | struct cmd_desc_type0 *hwdesc; | |
722 | int k; | |
723 | struct netxen_cmd_buffer *pbuf = NULL; | |
3d396eb1 AK |
724 | static int dropped_packet = 0; |
725 | int frag_count; | |
726 | u32 local_producer = 0; | |
727 | u32 max_tx_desc_count = 0; | |
728 | u32 last_cmd_consumer = 0; | |
729 | int no_of_desc; | |
730 | ||
731 | port->stats.xmitcalled++; | |
732 | frag_count = skb_shinfo(skb)->nr_frags + 1; | |
733 | ||
734 | if (unlikely(skb->len <= 0)) { | |
735 | dev_kfree_skb_any(skb); | |
736 | port->stats.badskblen++; | |
737 | return NETDEV_TX_OK; | |
738 | } | |
739 | ||
740 | if (frag_count > MAX_BUFFERS_PER_CMD) { | |
741 | printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)" | |
742 | "too large, can handle only %d frags\n", | |
743 | netxen_nic_driver_name, netdev->name, | |
744 | frag_count, MAX_BUFFERS_PER_CMD); | |
745 | port->stats.txdropped++; | |
746 | if ((++dropped_packet & 0xff) == 0xff) | |
747 | printk("%s: %s droppped packets = %d\n", | |
748 | netxen_nic_driver_name, netdev->name, | |
749 | dropped_packet); | |
750 | ||
751 | return NETDEV_TX_OK; | |
752 | } | |
753 | ||
754 | /* | |
755 | * Everything is set up. Now, we just need to transmit it out. | |
756 | * Note that we have to copy the contents of buffer over to | |
757 | * right place. Later on, this can be optimized out by de-coupling the | |
758 | * producer index from the buffer index. | |
759 | */ | |
760 | retry_getting_window: | |
761 | spin_lock_bh(&adapter->tx_lock); | |
762 | if (adapter->total_threads == MAX_XMIT_PRODUCERS) { | |
763 | spin_unlock_bh(&adapter->tx_lock); | |
764 | /* | |
765 | * Yield CPU | |
766 | */ | |
767 | if (!in_atomic()) | |
768 | schedule(); | |
769 | else { | |
770 | for (i = 0; i < 20; i++) | |
771 | cpu_relax(); /*This a nop instr on i386 */ | |
772 | } | |
773 | goto retry_getting_window; | |
774 | } | |
775 | local_producer = adapter->cmd_producer; | |
776 | /* There 4 fragments per descriptor */ | |
777 | no_of_desc = (frag_count + 3) >> 2; | |
cb8011ad AK |
778 | if (netdev->features & NETIF_F_TSO) { |
779 | if (skb_shinfo(skb)->gso_size > 0) { | |
780 | ||
3d396eb1 | 781 | no_of_desc++; |
ab6a5bb6 | 782 | if ((ip_hdrlen(skb) + tcp_hdrlen(skb) + |
c9bdd4b5 | 783 | sizeof(struct ethhdr)) > |
ed25ffa1 | 784 | (sizeof(struct cmd_desc_type0) - 2)) { |
cb8011ad AK |
785 | no_of_desc++; |
786 | } | |
3d396eb1 AK |
787 | } |
788 | } | |
789 | k = adapter->cmd_producer; | |
790 | max_tx_desc_count = adapter->max_tx_desc_count; | |
791 | last_cmd_consumer = adapter->last_cmd_consumer; | |
792 | if ((k + no_of_desc) >= | |
793 | ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count : | |
794 | last_cmd_consumer)) { | |
ed25ffa1 AK |
795 | port->stats.nocmddescriptor++; |
796 | DPRINTK(ERR, "No command descriptors available," | |
797 | " producer = %d, consumer = %d count=%llu," | |
798 | " dropping packet\n", producer, | |
799 | adapter->last_cmd_consumer, | |
800 | port->stats.nocmddescriptor); | |
801 | ||
802 | netif_stop_queue(netdev); | |
803 | port->flags |= NETXEN_NETDEV_STATUS; | |
3d396eb1 | 804 | spin_unlock_bh(&adapter->tx_lock); |
ed25ffa1 | 805 | return NETDEV_TX_BUSY; |
3d396eb1 AK |
806 | } |
807 | k = get_index_range(k, max_tx_desc_count, no_of_desc); | |
808 | adapter->cmd_producer = k; | |
809 | adapter->total_threads++; | |
810 | adapter->num_threads++; | |
811 | ||
812 | spin_unlock_bh(&adapter->tx_lock); | |
813 | /* Copy the descriptors into the hardware */ | |
814 | producer = local_producer; | |
815 | saved_producer = producer; | |
816 | hwdesc = &hw->cmd_desc_head[producer]; | |
817 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
818 | /* Take skb->data itself */ | |
819 | pbuf = &adapter->cmd_buf_arr[producer]; | |
cb8011ad | 820 | if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) { |
a608ab9c | 821 | pbuf->mss = skb_shinfo(skb)->gso_size; |
ed33ebe4 | 822 | hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); |
3d396eb1 AK |
823 | } else { |
824 | pbuf->mss = 0; | |
825 | hwdesc->mss = 0; | |
826 | } | |
3d396eb1 AK |
827 | pbuf->total_length = skb->len; |
828 | pbuf->skb = skb; | |
829 | pbuf->cmd = TX_ETHER_PKT; | |
830 | pbuf->frag_count = frag_count; | |
831 | pbuf->port = port->portnum; | |
832 | buffrag = &pbuf->frag_array[0]; | |
833 | buffrag->dma = pci_map_single(port->pdev, skb->data, first_seg_len, | |
834 | PCI_DMA_TODEVICE); | |
835 | buffrag->length = first_seg_len; | |
ed25ffa1 AK |
836 | netxen_set_cmd_desc_totallength(hwdesc, skb->len); |
837 | netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count); | |
838 | netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT); | |
3d396eb1 | 839 | |
ed25ffa1 | 840 | netxen_set_cmd_desc_port(hwdesc, port->portnum); |
3d396eb1 AK |
841 | hwdesc->buffer1_length = cpu_to_le16(first_seg_len); |
842 | hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma); | |
843 | ||
844 | for (i = 1, k = 1; i < frag_count; i++, k++) { | |
845 | struct skb_frag_struct *frag; | |
846 | int len, temp_len; | |
847 | unsigned long offset; | |
848 | dma_addr_t temp_dma; | |
849 | ||
850 | /* move to next desc. if there is a need */ | |
851 | if ((i & 0x3) == 0) { | |
852 | k = 0; | |
853 | producer = get_next_index(producer, | |
854 | adapter->max_tx_desc_count); | |
855 | hwdesc = &hw->cmd_desc_head[producer]; | |
856 | memset(hwdesc, 0, sizeof(struct cmd_desc_type0)); | |
857 | } | |
858 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
859 | len = frag->size; | |
860 | offset = frag->page_offset; | |
861 | ||
862 | temp_len = len; | |
863 | temp_dma = pci_map_page(port->pdev, frag->page, offset, | |
864 | len, PCI_DMA_TODEVICE); | |
865 | ||
866 | buffrag++; | |
867 | buffrag->dma = temp_dma; | |
868 | buffrag->length = temp_len; | |
869 | ||
870 | DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k); | |
871 | switch (k) { | |
872 | case 0: | |
873 | hwdesc->buffer1_length = cpu_to_le16(temp_len); | |
874 | hwdesc->addr_buffer1 = cpu_to_le64(temp_dma); | |
875 | break; | |
876 | case 1: | |
877 | hwdesc->buffer2_length = cpu_to_le16(temp_len); | |
878 | hwdesc->addr_buffer2 = cpu_to_le64(temp_dma); | |
879 | break; | |
880 | case 2: | |
881 | hwdesc->buffer3_length = cpu_to_le16(temp_len); | |
882 | hwdesc->addr_buffer3 = cpu_to_le64(temp_dma); | |
883 | break; | |
884 | case 3: | |
a608ab9c | 885 | hwdesc->buffer4_length = cpu_to_le16(temp_len); |
3d396eb1 AK |
886 | hwdesc->addr_buffer4 = cpu_to_le64(temp_dma); |
887 | break; | |
888 | } | |
889 | frag++; | |
890 | } | |
891 | producer = get_next_index(producer, adapter->max_tx_desc_count); | |
892 | ||
893 | /* might change opcode to TX_TCP_LSO */ | |
894 | netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb); | |
895 | ||
896 | /* For LSO, we need to copy the MAC/IP/TCP headers into | |
897 | * the descriptor ring | |
898 | */ | |
ed25ffa1 AK |
899 | if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer]) |
900 | == TX_TCP_LSO) { | |
3d396eb1 AK |
901 | int hdr_len, first_hdr_len, more_hdr; |
902 | hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length; | |
ed25ffa1 AK |
903 | if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) { |
904 | first_hdr_len = sizeof(struct cmd_desc_type0) - 2; | |
3d396eb1 AK |
905 | more_hdr = 1; |
906 | } else { | |
907 | first_hdr_len = hdr_len; | |
908 | more_hdr = 0; | |
909 | } | |
910 | /* copy the MAC/IP/TCP headers to the cmd descriptor list */ | |
911 | hwdesc = &hw->cmd_desc_head[producer]; | |
912 | ||
913 | /* copy the first 64 bytes */ | |
ed25ffa1 | 914 | memcpy(((void *)hwdesc) + 2, |
3d396eb1 AK |
915 | (void *)(skb->data), first_hdr_len); |
916 | producer = get_next_index(producer, max_tx_desc_count); | |
917 | ||
918 | if (more_hdr) { | |
919 | hwdesc = &hw->cmd_desc_head[producer]; | |
920 | /* copy the next 64 bytes - should be enough except | |
921 | * for pathological case | |
922 | */ | |
d626f62b ACM |
923 | skb_copy_from_linear_data_offset(skb, first_hdr_len, |
924 | hwdesc, | |
925 | (hdr_len - | |
926 | first_hdr_len)); | |
3d396eb1 AK |
927 | producer = get_next_index(producer, max_tx_desc_count); |
928 | } | |
929 | } | |
930 | spin_lock_bh(&adapter->tx_lock); | |
931 | port->stats.txbytes += | |
ed25ffa1 | 932 | netxen_get_cmd_desc_totallength(&hw->cmd_desc_head[saved_producer]); |
3d396eb1 AK |
933 | /* Code to update the adapter considering how many producer threads |
934 | are currently working */ | |
935 | if ((--adapter->num_threads) == 0) { | |
936 | /* This is the last thread */ | |
937 | u32 crb_producer = adapter->cmd_producer; | |
938 | writel(crb_producer, | |
939 | NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_PRODUCER_OFFSET)); | |
940 | wmb(); | |
941 | adapter->total_threads = 0; | |
3d396eb1 AK |
942 | } |
943 | ||
944 | port->stats.xmitfinished++; | |
945 | spin_unlock_bh(&adapter->tx_lock); | |
946 | ||
947 | netdev->trans_start = jiffies; | |
948 | ||
949 | DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer); | |
950 | ||
951 | DPRINTK(INFO, "Done. Send\n"); | |
952 | return NETDEV_TX_OK; | |
953 | } | |
954 | ||
955 | static void netxen_watchdog(unsigned long v) | |
956 | { | |
957 | struct netxen_adapter *adapter = (struct netxen_adapter *)v; | |
ed25ffa1 AK |
958 | |
959 | SCHEDULE_WORK(&adapter->watchdog_task); | |
3d396eb1 AK |
960 | } |
961 | ||
962 | static void netxen_tx_timeout(struct net_device *netdev) | |
963 | { | |
964 | struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev); | |
3d396eb1 | 965 | |
6c586644 | 966 | SCHEDULE_WORK(&port->tx_timeout_task); |
3d396eb1 AK |
967 | } |
968 | ||
6d5aefb8 | 969 | static void netxen_tx_timeout_task(struct work_struct *work) |
3d396eb1 | 970 | { |
6c586644 AK |
971 | struct netxen_port *port = |
972 | container_of(work, struct netxen_port, tx_timeout_task); | |
973 | struct net_device *netdev = port->netdev; | |
3d396eb1 AK |
974 | unsigned long flags; |
975 | ||
976 | printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", | |
977 | netxen_nic_driver_name, netdev->name); | |
978 | ||
6c586644 | 979 | spin_lock_irqsave(&port->adapter->lock, flags); |
3d396eb1 AK |
980 | netxen_nic_close(netdev); |
981 | netxen_nic_open(netdev); | |
6c586644 | 982 | spin_unlock_irqrestore(&port->adapter->lock, flags); |
3d396eb1 AK |
983 | netdev->trans_start = jiffies; |
984 | netif_wake_queue(netdev); | |
985 | } | |
986 | ||
987 | static int | |
988 | netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev) | |
989 | { | |
990 | u32 ret = 0; | |
991 | ||
992 | DPRINTK(INFO, "Entered handle ISR\n"); | |
993 | ||
994 | adapter->stats.ints++; | |
995 | ||
996 | if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) { | |
997 | int count = 0; | |
998 | u32 mask; | |
ed25ffa1 AK |
999 | mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); |
1000 | if ((mask & 0x80) == 0) { | |
1001 | /* not our interrupt */ | |
1002 | return ret; | |
1003 | } | |
3d396eb1 AK |
1004 | netxen_nic_disable_int(adapter); |
1005 | /* Window = 0 or 1 */ | |
1006 | do { | |
71bd7877 AK |
1007 | writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter, |
1008 | ISR_INT_TARGET_STATUS)); | |
1009 | mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); | |
3d396eb1 AK |
1010 | } while (((mask & 0x80) != 0) && (++count < 32)); |
1011 | if ((mask & 0x80) != 0) | |
1012 | printk("Could not disable interrupt completely\n"); | |
1013 | ||
1014 | } | |
1015 | adapter->stats.hostints++; | |
1016 | ||
1017 | if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) { | |
1018 | if (netif_rx_schedule_prep(netdev)) { | |
1019 | /* | |
1020 | * Interrupts are already disabled. | |
1021 | */ | |
1022 | __netif_rx_schedule(netdev); | |
1023 | } else { | |
1024 | static unsigned int intcount = 0; | |
1025 | if ((++intcount & 0xfff) == 0xfff) | |
1026 | printk(KERN_ERR | |
1027 | "%s: %s interrupt %d while in poll\n", | |
1028 | netxen_nic_driver_name, netdev->name, | |
1029 | intcount); | |
1030 | } | |
1031 | ret = 1; | |
1032 | } | |
1033 | ||
1034 | if (ret == 0) { | |
1035 | netxen_nic_enable_int(adapter); | |
1036 | } | |
1037 | ||
1038 | return ret; | |
1039 | } | |
1040 | ||
1041 | /* | |
1042 | * netxen_intr - Interrupt Handler | |
1043 | * @irq: interrupt number | |
1044 | * data points to adapter stucture (which may be handling more than 1 port | |
1045 | */ | |
1494a814 | 1046 | irqreturn_t netxen_intr(int irq, void *data) |
3d396eb1 AK |
1047 | { |
1048 | struct netxen_adapter *adapter; | |
1049 | struct netxen_port *port; | |
1050 | struct net_device *netdev; | |
1051 | int i; | |
1052 | ||
1053 | if (unlikely(!irq)) { | |
1054 | return IRQ_NONE; /* Not our interrupt */ | |
1055 | } | |
1056 | ||
1057 | adapter = (struct netxen_adapter *)data; | |
1058 | for (i = 0; i < adapter->ahw.max_ports; i++) { | |
1059 | port = adapter->port[i]; | |
1060 | netdev = port->netdev; | |
1061 | ||
1062 | /* process our status queue (for all 4 ports) */ | |
ed25ffa1 AK |
1063 | if (netif_running(netdev)) { |
1064 | netxen_handle_int(adapter, netdev); | |
1065 | break; | |
1066 | } | |
3d396eb1 AK |
1067 | } |
1068 | ||
1069 | return IRQ_HANDLED; | |
1070 | } | |
1071 | ||
1072 | static int netxen_nic_poll(struct net_device *netdev, int *budget) | |
1073 | { | |
1074 | struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev); | |
1075 | struct netxen_adapter *adapter = port->adapter; | |
1076 | int work_to_do = min(*budget, netdev->quota); | |
1077 | int done = 1; | |
1078 | int ctx; | |
1079 | int this_work_done; | |
80922fbc | 1080 | int work_done = 0; |
3d396eb1 AK |
1081 | |
1082 | DPRINTK(INFO, "polling for %d descriptors\n", *budget); | |
1083 | port->stats.polled++; | |
1084 | ||
80922fbc | 1085 | work_done = 0; |
3d396eb1 AK |
1086 | for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { |
1087 | /* | |
1088 | * Fairness issue. This will give undue weight to the | |
1089 | * receive context 0. | |
1090 | */ | |
1091 | ||
1092 | /* | |
1093 | * To avoid starvation, we give each of our receivers, | |
1094 | * a fraction of the quota. Sometimes, it might happen that we | |
1095 | * have enough quota to process every packet, but since all the | |
1096 | * packets are on one context, it gets only half of the quota, | |
1097 | * and ends up not processing it. | |
1098 | */ | |
1099 | this_work_done = netxen_process_rcv_ring(adapter, ctx, | |
1100 | work_to_do / | |
1101 | MAX_RCV_CTX); | |
80922fbc | 1102 | work_done += this_work_done; |
3d396eb1 AK |
1103 | } |
1104 | ||
80922fbc AK |
1105 | netdev->quota -= work_done; |
1106 | *budget -= work_done; | |
3d396eb1 | 1107 | |
ed25ffa1 | 1108 | if (work_done >= work_to_do && netxen_nic_rx_has_work(adapter) != 0) |
3d396eb1 AK |
1109 | done = 0; |
1110 | ||
ed25ffa1 AK |
1111 | if (netxen_process_cmd_ring((unsigned long)adapter) == 0) |
1112 | done = 0; | |
3d396eb1 AK |
1113 | |
1114 | DPRINTK(INFO, "new work_done: %d work_to_do: %d\n", | |
80922fbc | 1115 | work_done, work_to_do); |
3d396eb1 AK |
1116 | if (done) { |
1117 | netif_rx_complete(netdev); | |
1118 | netxen_nic_enable_int(adapter); | |
1119 | } | |
1120 | ||
edf90163 | 1121 | return !done; |
3d396eb1 AK |
1122 | } |
1123 | ||
1124 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1125 | static void netxen_nic_poll_controller(struct net_device *netdev) | |
1126 | { | |
1127 | struct netxen_port *port = netdev_priv(netdev); | |
1128 | struct netxen_adapter *adapter = port->adapter; | |
1129 | disable_irq(adapter->irq); | |
1494a814 | 1130 | netxen_intr(adapter->irq, adapter); |
3d396eb1 AK |
1131 | enable_irq(adapter->irq); |
1132 | } | |
1133 | #endif | |
3d396eb1 AK |
1134 | |
1135 | static struct pci_driver netxen_driver = { | |
1136 | .name = netxen_nic_driver_name, | |
1137 | .id_table = netxen_pci_tbl, | |
1138 | .probe = netxen_nic_probe, | |
1139 | .remove = __devexit_p(netxen_nic_remove) | |
1140 | }; | |
1141 | ||
1142 | /* Driver Registration on NetXen card */ | |
1143 | ||
1144 | static int __init netxen_init_module(void) | |
1145 | { | |
ed25ffa1 AK |
1146 | if ((netxen_workq = create_singlethread_workqueue("netxen")) == 0) |
1147 | return -ENOMEM; | |
1148 | ||
184231bd | 1149 | return pci_register_driver(&netxen_driver); |
3d396eb1 AK |
1150 | } |
1151 | ||
1152 | module_init(netxen_init_module); | |
1153 | ||
1154 | static void __exit netxen_exit_module(void) | |
1155 | { | |
1156 | /* | |
1157 | * Wait for some time to allow the dma to drain, if any. | |
1158 | */ | |
3d396eb1 | 1159 | pci_unregister_driver(&netxen_driver); |
9de06610 | 1160 | destroy_workqueue(netxen_workq); |
3d396eb1 AK |
1161 | } |
1162 | ||
1163 | module_exit(netxen_exit_module); |