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qlcnic: cleanup skb allocation
[net-next-2.6.git] / drivers / net / qlcnic / qlcnic_main.c
CommitLineData
af19b491
AKS		 1/*
2 * Copyright (C) 2009 - QLogic Corporation.
3 * All rights reserved.
4 *
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.
9 *
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.
14 *
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.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called "COPYING".
22 *
23 */
24
5a0e3ad6 25#include <linux/slab.h>
af19b491
AKS		 26#include <linux/vmalloc.h>
27#include <linux/interrupt.h>
28
29#include "qlcnic.h"
30
31#include <linux/dma-mapping.h>
32#include <linux/if_vlan.h>
33#include <net/ip.h>
34#include <linux/ipv6.h>
35#include <linux/inetdevice.h>
36#include <linux/sysfs.h>
37
7f9a0c34 38MODULE_DESCRIPTION("QLogic 1/10 GbE Converged/Intelligent Ethernet Driver");
af19b491
AKS		 39MODULE_LICENSE("GPL");
40MODULE_VERSION(QLCNIC_LINUX_VERSIONID);
41MODULE_FIRMWARE(QLCNIC_UNIFIED_ROMIMAGE_NAME);
42
43char qlcnic_driver_name[] = "qlcnic";
7f9a0c34
SV		 44static const char qlcnic_driver_string[] = "QLogic 1/10 GbE "
45 "Converged/Intelligent Ethernet Driver v" QLCNIC_LINUX_VERSIONID;
af19b491
AKS		 46
47static int port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
48
49/* Default to restricted 1G auto-neg mode */
50static int wol_port_mode = 5;
51
52static int use_msi = 1;
53module_param(use_msi, int, 0644);
54MODULE_PARM_DESC(use_msi, "MSI interrupt (0=disabled, 1=enabled");
55
56static int use_msi_x = 1;
57module_param(use_msi_x, int, 0644);
58MODULE_PARM_DESC(use_msi_x, "MSI-X interrupt (0=disabled, 1=enabled");
59
60static int auto_fw_reset = AUTO_FW_RESET_ENABLED;
61module_param(auto_fw_reset, int, 0644);
62MODULE_PARM_DESC(auto_fw_reset, "Auto firmware reset (0=disabled, 1=enabled");
63
4d5bdb38
AKS		 64static int load_fw_file;
65module_param(load_fw_file, int, 0644);
66MODULE_PARM_DESC(load_fw_file, "Load firmware from (0=flash, 1=file");
67
2e9d722d
AC		 68static int qlcnic_config_npars;
69module_param(qlcnic_config_npars, int, 0644);
70MODULE_PARM_DESC(qlcnic_config_npars, "Configure NPARs (0=disabled, 1=enabled");
71
af19b491
AKS		 72static int __devinit qlcnic_probe(struct pci_dev *pdev,
73 const struct pci_device_id *ent);
74static void __devexit qlcnic_remove(struct pci_dev *pdev);
75static int qlcnic_open(struct net_device *netdev);
76static int qlcnic_close(struct net_device *netdev);
af19b491
AKS		 77static void qlcnic_tx_timeout(struct net_device *netdev);
78static void qlcnic_tx_timeout_task(struct work_struct *work);
79static void qlcnic_attach_work(struct work_struct *work);
80static void qlcnic_fwinit_work(struct work_struct *work);
81static void qlcnic_fw_poll_work(struct work_struct *work);
82static void qlcnic_schedule_work(struct qlcnic_adapter *adapter,
83 work_func_t func, int delay);
84static void qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter);
85static int qlcnic_poll(struct napi_struct *napi, int budget);
8f891387 86static int qlcnic_rx_poll(struct napi_struct *napi, int budget);
af19b491
AKS		 87#ifdef CONFIG_NET_POLL_CONTROLLER
88static void qlcnic_poll_controller(struct net_device *netdev);
89#endif
90
91static void qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter);
92static void qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter);
93static void qlcnic_create_diag_entries(struct qlcnic_adapter *adapter);
94static void qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter);
95
6df900e9 96static void qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding);
af19b491
AKS		 97static void qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter);
98static int qlcnic_can_start_firmware(struct qlcnic_adapter *adapter);
99
7eb9855d 100static irqreturn_t qlcnic_tmp_intr(int irq, void *data);
af19b491
AKS		 101static irqreturn_t qlcnic_intr(int irq, void *data);
102static irqreturn_t qlcnic_msi_intr(int irq, void *data);
103static irqreturn_t qlcnic_msix_intr(int irq, void *data);
104
105static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev);
106static void qlcnic_config_indev_addr(struct net_device *dev, unsigned long);
9f26f547
AC		 107static int qlcnic_start_firmware(struct qlcnic_adapter *);
108
109static void qlcnic_dev_set_npar_ready(struct qlcnic_adapter *);
110static void qlcnicvf_clear_ilb_mode(struct qlcnic_adapter *);
111static int qlcnicvf_set_ilb_mode(struct qlcnic_adapter *);
112static int qlcnicvf_config_led(struct qlcnic_adapter *, u32, u32);
113static int qlcnicvf_config_bridged_mode(struct qlcnic_adapter *, u32);
114static int qlcnicvf_start_firmware(struct qlcnic_adapter *);
af19b491
AKS		 115/* PCI Device ID Table */
116#define ENTRY(device) \
117 {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, (device)), \
118 .class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
119
120#define PCI_DEVICE_ID_QLOGIC_QLE824X 0x8020
121
6a902881 122static DEFINE_PCI_DEVICE_TABLE(qlcnic_pci_tbl) = {
af19b491
AKS		 123 ENTRY(PCI_DEVICE_ID_QLOGIC_QLE824X),
124 {0,}
125};
126
127MODULE_DEVICE_TABLE(pci, qlcnic_pci_tbl);
128
129
130void
131qlcnic_update_cmd_producer(struct qlcnic_adapter *adapter,
132 struct qlcnic_host_tx_ring *tx_ring)
133{
134 writel(tx_ring->producer, tx_ring->crb_cmd_producer);
af19b491
AKS		 135}
136
137static const u32 msi_tgt_status[8] = {
138 ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
139 ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3,
140 ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
141 ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
142};
143
144static const
145struct qlcnic_legacy_intr_set legacy_intr[] = QLCNIC_LEGACY_INTR_CONFIG;
146
147static inline void qlcnic_disable_int(struct qlcnic_host_sds_ring *sds_ring)
148{
149 writel(0, sds_ring->crb_intr_mask);
150}
151
152static inline void qlcnic_enable_int(struct qlcnic_host_sds_ring *sds_ring)
153{
154 struct qlcnic_adapter *adapter = sds_ring->adapter;
155
156 writel(0x1, sds_ring->crb_intr_mask);
157
158 if (!QLCNIC_IS_MSI_FAMILY(adapter))
159 writel(0xfbff, adapter->tgt_mask_reg);
160}
161
162static int
163qlcnic_alloc_sds_rings(struct qlcnic_recv_context *recv_ctx, int count)
164{
165 int size = sizeof(struct qlcnic_host_sds_ring) * count;
166
167 recv_ctx->sds_rings = kzalloc(size, GFP_KERNEL);
168
169 return (recv_ctx->sds_rings == NULL);
170}
171
172static void
173qlcnic_free_sds_rings(struct qlcnic_recv_context *recv_ctx)
174{
175 if (recv_ctx->sds_rings != NULL)
176 kfree(recv_ctx->sds_rings);
177
178 recv_ctx->sds_rings = NULL;
179}
180
181static int
182qlcnic_napi_add(struct qlcnic_adapter *adapter, struct net_device *netdev)
183{
184 int ring;
185 struct qlcnic_host_sds_ring *sds_ring;
186 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
187
188 if (qlcnic_alloc_sds_rings(recv_ctx, adapter->max_sds_rings))
189 return -ENOMEM;
190
191 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
192 sds_ring = &recv_ctx->sds_rings[ring];
8f891387 193
194 if (ring == adapter->max_sds_rings - 1)
195 netif_napi_add(netdev, &sds_ring->napi, qlcnic_poll,
196 QLCNIC_NETDEV_WEIGHT/adapter->max_sds_rings);
197 else
198 netif_napi_add(netdev, &sds_ring->napi,
199 qlcnic_rx_poll, QLCNIC_NETDEV_WEIGHT*2);
af19b491
AKS		 200 }
201
202 return 0;
203}
204
205static void
206qlcnic_napi_del(struct qlcnic_adapter *adapter)
207{
208 int ring;
209 struct qlcnic_host_sds_ring *sds_ring;
210 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
211
212 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
213 sds_ring = &recv_ctx->sds_rings[ring];
214 netif_napi_del(&sds_ring->napi);
215 }
216
217 qlcnic_free_sds_rings(&adapter->recv_ctx);
218}
219
220static void
221qlcnic_napi_enable(struct qlcnic_adapter *adapter)
222{
223 int ring;
224 struct qlcnic_host_sds_ring *sds_ring;
225 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
226
780ab790
AKS		 227 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
228 return;
229
af19b491
AKS		 230 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
231 sds_ring = &recv_ctx->sds_rings[ring];
232 napi_enable(&sds_ring->napi);
233 qlcnic_enable_int(sds_ring);
234 }
235}
236
237static void
238qlcnic_napi_disable(struct qlcnic_adapter *adapter)
239{
240 int ring;
241 struct qlcnic_host_sds_ring *sds_ring;
242 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
243
780ab790
AKS		 244 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
245 return;
246
af19b491
AKS		 247 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
248 sds_ring = &recv_ctx->sds_rings[ring];
249 qlcnic_disable_int(sds_ring);
250 napi_synchronize(&sds_ring->napi);
251 napi_disable(&sds_ring->napi);
252 }
253}
254
255static void qlcnic_clear_stats(struct qlcnic_adapter *adapter)
256{
257 memset(&adapter->stats, 0, sizeof(adapter->stats));
af19b491
AKS		 258}
259
af19b491
AKS		 260static void qlcnic_set_port_mode(struct qlcnic_adapter *adapter)
261{
262 u32 val, data;
263
264 val = adapter->ahw.board_type;
265 if ((val == QLCNIC_BRDTYPE_P3_HMEZ) ||
266 (val == QLCNIC_BRDTYPE_P3_XG_LOM)) {
267 if (port_mode == QLCNIC_PORT_MODE_802_3_AP) {
268 data = QLCNIC_PORT_MODE_802_3_AP;
269 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
270 } else if (port_mode == QLCNIC_PORT_MODE_XG) {
271 data = QLCNIC_PORT_MODE_XG;
272 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
273 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_1G) {
274 data = QLCNIC_PORT_MODE_AUTO_NEG_1G;
275 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
276 } else if (port_mode == QLCNIC_PORT_MODE_AUTO_NEG_XG) {
277 data = QLCNIC_PORT_MODE_AUTO_NEG_XG;
278 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
279 } else {
280 data = QLCNIC_PORT_MODE_AUTO_NEG;
281 QLCWR32(adapter, QLCNIC_PORT_MODE_ADDR, data);
282 }
283
284 if ((wol_port_mode != QLCNIC_PORT_MODE_802_3_AP) &&
285 (wol_port_mode != QLCNIC_PORT_MODE_XG) &&
286 (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_1G) &&
287 (wol_port_mode != QLCNIC_PORT_MODE_AUTO_NEG_XG)) {
288 wol_port_mode = QLCNIC_PORT_MODE_AUTO_NEG;
289 }
290 QLCWR32(adapter, QLCNIC_WOL_PORT_MODE, wol_port_mode);
291 }
292}
293
294static void qlcnic_set_msix_bit(struct pci_dev *pdev, int enable)
295{
296 u32 control;
297 int pos;
298
299 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
300 if (pos) {
301 pci_read_config_dword(pdev, pos, &control);
302 if (enable)
303 control |= PCI_MSIX_FLAGS_ENABLE;
304 else
305 control = 0;
306 pci_write_config_dword(pdev, pos, control);
307 }
308}
309
310static void qlcnic_init_msix_entries(struct qlcnic_adapter *adapter, int count)
311{
312 int i;
313
314 for (i = 0; i < count; i++)
315 adapter->msix_entries[i].entry = i;
316}
317
318static int
319qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
320{
2e9d722d 321 u8 mac_addr[ETH_ALEN];
af19b491
AKS		 322 struct net_device *netdev = adapter->netdev;
323 struct pci_dev *pdev = adapter->pdev;
324
2e9d722d 325 if (adapter->nic_ops->get_mac_addr(adapter, mac_addr) != 0)
af19b491
AKS		 326 return -EIO;
327
2e9d722d 328 memcpy(netdev->dev_addr, mac_addr, ETH_ALEN);
af19b491
AKS		 329 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
330 memcpy(adapter->mac_addr, netdev->dev_addr, netdev->addr_len);
331
332 /* set station address */
333
334 if (!is_valid_ether_addr(netdev->perm_addr))
335 dev_warn(&pdev->dev, "Bad MAC address %pM.\n",
336 netdev->dev_addr);
337
338 return 0;
339}
340
341static int qlcnic_set_mac(struct net_device *netdev, void *p)
342{
343 struct qlcnic_adapter *adapter = netdev_priv(netdev);
344 struct sockaddr *addr = p;
345
346 if (!is_valid_ether_addr(addr->sa_data))
347 return -EINVAL;
348
349 if (netif_running(netdev)) {
350 netif_device_detach(netdev);
351 qlcnic_napi_disable(adapter);
352 }
353
354 memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
355 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
356 qlcnic_set_multi(adapter->netdev);
357
358 if (netif_running(netdev)) {
359 netif_device_attach(netdev);
360 qlcnic_napi_enable(adapter);
361 }
362 return 0;
363}
364
365static const struct net_device_ops qlcnic_netdev_ops = {
366 .ndo_open = qlcnic_open,
367 .ndo_stop = qlcnic_close,
368 .ndo_start_xmit = qlcnic_xmit_frame,
369 .ndo_get_stats = qlcnic_get_stats,
370 .ndo_validate_addr = eth_validate_addr,
371 .ndo_set_multicast_list = qlcnic_set_multi,
372 .ndo_set_mac_address = qlcnic_set_mac,
373 .ndo_change_mtu = qlcnic_change_mtu,
374 .ndo_tx_timeout = qlcnic_tx_timeout,
375#ifdef CONFIG_NET_POLL_CONTROLLER
376 .ndo_poll_controller = qlcnic_poll_controller,
377#endif
378};
379
2e9d722d
AC		 380static struct qlcnic_nic_template qlcnic_ops = {
381 .get_mac_addr = qlcnic_get_mac_addr,
382 .config_bridged_mode = qlcnic_config_bridged_mode,
383 .config_led = qlcnic_config_led,
384 .set_ilb_mode = qlcnic_set_ilb_mode,
9f26f547
AC		 385 .clear_ilb_mode = qlcnic_clear_ilb_mode,
386 .start_firmware = qlcnic_start_firmware
2e9d722d
AC		 387};
388
389static struct qlcnic_nic_template qlcnic_pf_ops = {
390 .get_mac_addr = qlcnic_get_mac_address,
391 .config_bridged_mode = qlcnic_config_bridged_mode,
392 .config_led = qlcnic_config_led,
393 .set_ilb_mode = qlcnic_set_ilb_mode,
9f26f547
AC		 394 .clear_ilb_mode = qlcnic_clear_ilb_mode,
395 .start_firmware = qlcnic_start_firmware
396};
397
398static struct qlcnic_nic_template qlcnic_vf_ops = {
399 .get_mac_addr = qlcnic_get_mac_address,
400 .config_bridged_mode = qlcnicvf_config_bridged_mode,
401 .config_led = qlcnicvf_config_led,
402 .set_ilb_mode = qlcnicvf_set_ilb_mode,
403 .clear_ilb_mode = qlcnicvf_clear_ilb_mode,
404 .start_firmware = qlcnicvf_start_firmware
2e9d722d
AC		 405};
406
af19b491
AKS		 407static void
408qlcnic_setup_intr(struct qlcnic_adapter *adapter)
409{
410 const struct qlcnic_legacy_intr_set *legacy_intrp;
411 struct pci_dev *pdev = adapter->pdev;
412 int err, num_msix;
413
414 if (adapter->rss_supported) {
415 num_msix = (num_online_cpus() >= MSIX_ENTRIES_PER_ADAPTER) ?
416 MSIX_ENTRIES_PER_ADAPTER : 2;
417 } else
418 num_msix = 1;
419
420 adapter->max_sds_rings = 1;
421
422 adapter->flags &= ~(QLCNIC_MSI_ENABLED | QLCNIC_MSIX_ENABLED);
423
424 legacy_intrp = &legacy_intr[adapter->ahw.pci_func];
425
426 adapter->int_vec_bit = legacy_intrp->int_vec_bit;
427 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
428 legacy_intrp->tgt_status_reg);
429 adapter->tgt_mask_reg = qlcnic_get_ioaddr(adapter,
430 legacy_intrp->tgt_mask_reg);
431 adapter->isr_int_vec = qlcnic_get_ioaddr(adapter, ISR_INT_VECTOR);
432
433 adapter->crb_int_state_reg = qlcnic_get_ioaddr(adapter,
434 ISR_INT_STATE_REG);
435
436 qlcnic_set_msix_bit(pdev, 0);
437
438 if (adapter->msix_supported) {
439
440 qlcnic_init_msix_entries(adapter, num_msix);
441 err = pci_enable_msix(pdev, adapter->msix_entries, num_msix);
442 if (err == 0) {
443 adapter->flags |= QLCNIC_MSIX_ENABLED;
444 qlcnic_set_msix_bit(pdev, 1);
445
446 if (adapter->rss_supported)
447 adapter->max_sds_rings = num_msix;
448
449 dev_info(&pdev->dev, "using msi-x interrupts\n");
450 return;
451 }
452
453 if (err > 0)
454 pci_disable_msix(pdev);
455
456 /* fall through for msi */
457 }
458
459 if (use_msi && !pci_enable_msi(pdev)) {
460 adapter->flags |= QLCNIC_MSI_ENABLED;
461 adapter->tgt_status_reg = qlcnic_get_ioaddr(adapter,
462 msi_tgt_status[adapter->ahw.pci_func]);
463 dev_info(&pdev->dev, "using msi interrupts\n");
464 adapter->msix_entries[0].vector = pdev->irq;
465 return;
466 }
467
468 dev_info(&pdev->dev, "using legacy interrupts\n");
469 adapter->msix_entries[0].vector = pdev->irq;
470}
471
472static void
473qlcnic_teardown_intr(struct qlcnic_adapter *adapter)
474{
475 if (adapter->flags & QLCNIC_MSIX_ENABLED)
476 pci_disable_msix(adapter->pdev);
477 if (adapter->flags & QLCNIC_MSI_ENABLED)
478 pci_disable_msi(adapter->pdev);
479}
480
481static void
482qlcnic_cleanup_pci_map(struct qlcnic_adapter *adapter)
483{
484 if (adapter->ahw.pci_base0 != NULL)
485 iounmap(adapter->ahw.pci_base0);
486}
487
2e9d722d
AC		 488static int
489qlcnic_set_function_modes(struct qlcnic_adapter *adapter)
490{
491 u8 id;
492 u32 ref_count;
493 int i, ret = 1;
494 u32 data = QLCNIC_MGMT_FUNC;
495 void __iomem *priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
496
497 /* If other drivers are not in use set their privilege level */
498 ref_count = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
499 ret = qlcnic_api_lock(adapter);
500 if (ret)
501 goto err_lock;
502 if (QLC_DEV_CLR_REF_CNT(ref_count, adapter->ahw.pci_func))
503 goto err_npar;
504
0e33c664
AC		 505 if (qlcnic_config_npars) {
506 for (i = 0; i < QLCNIC_MAX_PCI_FUNC; i++) {
507 id = adapter->npars[i].id;
508 if (adapter->npars[i].type != QLCNIC_TYPE_NIC ||
509 id == adapter->ahw.pci_func)
510 continue;
511 data |= (qlcnic_config_npars &
512 QLC_DEV_SET_DRV(0xf, id));
513 }
514 } else {
515 data = readl(priv_op);
516 data = (data & ~QLC_DEV_SET_DRV(0xf, adapter->ahw.pci_func)) |
517 (QLC_DEV_SET_DRV(QLCNIC_MGMT_FUNC,
518 adapter->ahw.pci_func));
2e9d722d
AC		 519 }
520 writel(data, priv_op);
2e9d722d
AC		 521err_npar:
522 qlcnic_api_unlock(adapter);
523err_lock:
524 return ret;
525}
526
2e9d722d
AC		 527static u32
528qlcnic_get_driver_mode(struct qlcnic_adapter *adapter)
529{
530 void __iomem *msix_base_addr;
531 void __iomem *priv_op;
532 u32 func;
533 u32 msix_base;
534 u32 op_mode, priv_level;
535
536 /* Determine FW API version */
537 adapter->fw_hal_version = readl(adapter->ahw.pci_base0 + QLCNIC_FW_API);
538 if (adapter->fw_hal_version == ~0) {
539 adapter->nic_ops = &qlcnic_ops;
540 adapter->fw_hal_version = QLCNIC_FW_BASE;
541 adapter->ahw.pci_func = PCI_FUNC(adapter->pdev->devfn);
0e33c664 542 adapter->capabilities = QLCRD32(adapter, CRB_FW_CAPABILITIES_1);
2e9d722d
AC		 543 dev_info(&adapter->pdev->dev,
544 "FW does not support nic partion\n");
545 return adapter->fw_hal_version;
546 }
547
548 /* Find PCI function number */
549 pci_read_config_dword(adapter->pdev, QLCNIC_MSIX_TABLE_OFFSET, &func);
550 msix_base_addr = adapter->ahw.pci_base0 + QLCNIC_MSIX_BASE;
551 msix_base = readl(msix_base_addr);
552 func = (func - msix_base)/QLCNIC_MSIX_TBL_PGSIZE;
553 adapter->ahw.pci_func = func;
554
0e33c664
AC		 555 qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
556
557 if (!(adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
558 adapter->nic_ops = &qlcnic_ops;
559 return adapter->fw_hal_version;
560 }
561
2e9d722d
AC		 562 /* Determine function privilege level */
563 priv_op = adapter->ahw.pci_base0 + QLCNIC_DRV_OP_MODE;
564 op_mode = readl(priv_op);
0e33c664 565 if (op_mode == QLC_DEV_DRV_DEFAULT)
2e9d722d 566 priv_level = QLCNIC_MGMT_FUNC;
0e33c664 567 else
2e9d722d
AC		 568 priv_level = QLC_DEV_GET_DRV(op_mode, adapter->ahw.pci_func);
569
570 switch (priv_level) {
571 case QLCNIC_MGMT_FUNC:
572 adapter->op_mode = QLCNIC_MGMT_FUNC;
573 adapter->nic_ops = &qlcnic_pf_ops;
0e33c664 574 qlcnic_get_pci_info(adapter);
2e9d722d 575 /* Set privilege level for other functions */
0e33c664 576 qlcnic_set_function_modes(adapter);
2e9d722d
AC		 577 dev_info(&adapter->pdev->dev,
578 "HAL Version: %d, Management function\n",
579 adapter->fw_hal_version);
580 break;
581 case QLCNIC_PRIV_FUNC:
582 adapter->op_mode = QLCNIC_PRIV_FUNC;
583 dev_info(&adapter->pdev->dev,
584 "HAL Version: %d, Privileged function\n",
585 adapter->fw_hal_version);
586 adapter->nic_ops = &qlcnic_pf_ops;
587 break;
9f26f547
AC		 588 case QLCNIC_NON_PRIV_FUNC:
589 adapter->op_mode = QLCNIC_NON_PRIV_FUNC;
590 dev_info(&adapter->pdev->dev,
591 "HAL Version: %d Non Privileged function\n",
592 adapter->fw_hal_version);
593 adapter->nic_ops = &qlcnic_vf_ops;
594 break;
2e9d722d
AC		 595 default:
596 dev_info(&adapter->pdev->dev, "Unknown function mode: %d\n",
597 priv_level);
598 return 0;
599 }
600 return adapter->fw_hal_version;
601}
602
af19b491
AKS		 603static int
604qlcnic_setup_pci_map(struct qlcnic_adapter *adapter)
605{
606 void __iomem *mem_ptr0 = NULL;
607 resource_size_t mem_base;
608 unsigned long mem_len, pci_len0 = 0;
609
610 struct pci_dev *pdev = adapter->pdev;
af19b491 611
af19b491
AKS		 612 /* remap phys address */
613 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
614 mem_len = pci_resource_len(pdev, 0);
615
616 if (mem_len == QLCNIC_PCI_2MB_SIZE) {
617
618 mem_ptr0 = pci_ioremap_bar(pdev, 0);
619 if (mem_ptr0 == NULL) {
620 dev_err(&pdev->dev, "failed to map PCI bar 0\n");
621 return -EIO;
622 }
623 pci_len0 = mem_len;
624 } else {
625 return -EIO;
626 }
627
628 dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
629
630 adapter->ahw.pci_base0 = mem_ptr0;
631 adapter->ahw.pci_len0 = pci_len0;
632
2e9d722d
AC		 633 if (!qlcnic_get_driver_mode(adapter)) {
634 iounmap(adapter->ahw.pci_base0);
635 return -EIO;
636 }
637
af19b491 638 adapter->ahw.ocm_win_crb = qlcnic_get_ioaddr(adapter,
2e9d722d 639 QLCNIC_PCIX_PS_REG(PCIX_OCM_WINDOW_REG(adapter->ahw.pci_func)));
af19b491
AKS		 640
641 return 0;
642}
643
644static void get_brd_name(struct qlcnic_adapter *adapter, char *name)
645{
646 struct pci_dev *pdev = adapter->pdev;
647 int i, found = 0;
648
649 for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
650 if (qlcnic_boards[i].vendor == pdev->vendor &&
651 qlcnic_boards[i].device == pdev->device &&
652 qlcnic_boards[i].sub_vendor == pdev->subsystem_vendor &&
653 qlcnic_boards[i].sub_device == pdev->subsystem_device) {
02f6e46f
SC		 654 sprintf(name, "%pM: %s" ,
655 adapter->mac_addr,
656 qlcnic_boards[i].short_name);
af19b491
AKS		 657 found = 1;
658 break;
659 }
660
661 }
662
663 if (!found)
7f9a0c34 664 sprintf(name, "%pM Gigabit Ethernet", adapter->mac_addr);
af19b491
AKS		 665}
666
667static void
668qlcnic_check_options(struct qlcnic_adapter *adapter)
669{
670 u32 fw_major, fw_minor, fw_build;
671 char brd_name[QLCNIC_MAX_BOARD_NAME_LEN];
672 char serial_num[32];
673 int i, offset, val;
674 int *ptr32;
675 struct pci_dev *pdev = adapter->pdev;
676
677 adapter->driver_mismatch = 0;
678
679 ptr32 = (int *)&serial_num;
680 offset = QLCNIC_FW_SERIAL_NUM_OFFSET;
681 for (i = 0; i < 8; i++) {
682 if (qlcnic_rom_fast_read(adapter, offset, &val) == -1) {
683 dev_err(&pdev->dev, "error reading board info\n");
684 adapter->driver_mismatch = 1;
685 return;
686 }
687 ptr32[i] = cpu_to_le32(val);
688 offset += sizeof(u32);
689 }
690
691 fw_major = QLCRD32(adapter, QLCNIC_FW_VERSION_MAJOR);
692 fw_minor = QLCRD32(adapter, QLCNIC_FW_VERSION_MINOR);
693 fw_build = QLCRD32(adapter, QLCNIC_FW_VERSION_SUB);
694
695 adapter->fw_version = QLCNIC_VERSION_CODE(fw_major, fw_minor, fw_build);
696
697 if (adapter->portnum == 0) {
698 get_brd_name(adapter, brd_name);
699
700 pr_info("%s: %s Board Chip rev 0x%x\n",
701 module_name(THIS_MODULE),
702 brd_name, adapter->ahw.revision_id);
703 }
704
251a84c9
AKS		 705 dev_info(&pdev->dev, "firmware v%d.%d.%d\n",
706 fw_major, fw_minor, fw_build);
af19b491 707
af19b491
AKS		 708 adapter->flags &= ~QLCNIC_LRO_ENABLED;
709
710 if (adapter->ahw.port_type == QLCNIC_XGBE) {
711 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_10G;
712 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_10G;
713 } else if (adapter->ahw.port_type == QLCNIC_GBE) {
714 adapter->num_rxd = DEFAULT_RCV_DESCRIPTORS_1G;
715 adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS_1G;
716 }
717
0e33c664
AC		 718 qlcnic_get_nic_info(adapter, adapter->ahw.pci_func);
719
af19b491
AKS		 720 adapter->msix_supported = !!use_msi_x;
721 adapter->rss_supported = !!use_msi_x;
722
723 adapter->num_txd = MAX_CMD_DESCRIPTORS;
724
af19b491
AKS		 725 adapter->max_rds_rings = 2;
726}
727
728static int
729qlcnic_start_firmware(struct qlcnic_adapter *adapter)
730{
731 int val, err, first_boot;
732
aa5e18c0
SC		 733 err = qlcnic_can_start_firmware(adapter);
734 if (err < 0)
735 return err;
736 else if (!err)
af19b491
AKS		 737 goto wait_init;
738
739 first_boot = QLCRD32(adapter, QLCNIC_CAM_RAM(0x1fc));
740 if (first_boot == 0x55555555)
741 /* This is the first boot after power up */
742 QLCWR32(adapter, QLCNIC_CAM_RAM(0x1fc), QLCNIC_BDINFO_MAGIC);
743
4d5bdb38
AKS		 744 if (load_fw_file)
745 qlcnic_request_firmware(adapter);
8f891387 746 else {
747 if (qlcnic_check_flash_fw_ver(adapter))
748 goto err_out;
749
4d5bdb38 750 adapter->fw_type = QLCNIC_FLASH_ROMIMAGE;
8f891387 751 }
af19b491
AKS		 752
753 err = qlcnic_need_fw_reset(adapter);
754 if (err < 0)
755 goto err_out;
756 if (err == 0)
757 goto wait_init;
758
759 if (first_boot != 0x55555555) {
760 QLCWR32(adapter, CRB_CMDPEG_STATE, 0);
761 qlcnic_pinit_from_rom(adapter);
762 msleep(1);
763 }
764
af19b491
AKS		 765 QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS1, 0);
766 QLCWR32(adapter, QLCNIC_PEG_HALT_STATUS2, 0);
767
768 qlcnic_set_port_mode(adapter);
769
770 err = qlcnic_load_firmware(adapter);
771 if (err)
772 goto err_out;
773
774 qlcnic_release_firmware(adapter);
775
776 val = (_QLCNIC_LINUX_MAJOR << 16)
777 | ((_QLCNIC_LINUX_MINOR << 8))
778 | (_QLCNIC_LINUX_SUBVERSION);
779 QLCWR32(adapter, CRB_DRIVER_VERSION, val);
780
781wait_init:
782 /* Handshake with the card before we register the devices. */
783 err = qlcnic_phantom_init(adapter);
784 if (err)
785 goto err_out;
786
787 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_READY);
6df900e9 788 qlcnic_idc_debug_info(adapter, 1);
af19b491 789
af19b491
AKS		 790 qlcnic_check_options(adapter);
791
0e33c664
AC		 792 if (adapter->flags & QLCNIC_ESWITCH_ENABLED &&
793 adapter->op_mode != QLCNIC_NON_PRIV_FUNC)
794 qlcnic_dev_set_npar_ready(adapter);
2e9d722d 795
af19b491
AKS		 796 adapter->need_fw_reset = 0;
797
a7fc948f
AKS		 798 qlcnic_release_firmware(adapter);
799 return 0;
af19b491
AKS		 800
801err_out:
a7fc948f
AKS		 802 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_FAILED);
803 dev_err(&adapter->pdev->dev, "Device state set to failed\n");
af19b491
AKS		 804 qlcnic_release_firmware(adapter);
805 return err;
806}
807
808static int
809qlcnic_request_irq(struct qlcnic_adapter *adapter)
810{
811 irq_handler_t handler;
812 struct qlcnic_host_sds_ring *sds_ring;
813 int err, ring;
814
815 unsigned long flags = 0;
816 struct net_device *netdev = adapter->netdev;
817 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
818
7eb9855d
AKS		 819 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
820 handler = qlcnic_tmp_intr;
821 if (!QLCNIC_IS_MSI_FAMILY(adapter))
822 flags |= IRQF_SHARED;
823
824 } else {
825 if (adapter->flags & QLCNIC_MSIX_ENABLED)
826 handler = qlcnic_msix_intr;
827 else if (adapter->flags & QLCNIC_MSI_ENABLED)
828 handler = qlcnic_msi_intr;
829 else {
830 flags |= IRQF_SHARED;
831 handler = qlcnic_intr;
832 }
af19b491
AKS		 833 }
834 adapter->irq = netdev->irq;
835
836 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
837 sds_ring = &recv_ctx->sds_rings[ring];
838 sprintf(sds_ring->name, "%s[%d]", netdev->name, ring);
839 err = request_irq(sds_ring->irq, handler,
840 flags, sds_ring->name, sds_ring);
841 if (err)
842 return err;
843 }
844
845 return 0;
846}
847
848static void
849qlcnic_free_irq(struct qlcnic_adapter *adapter)
850{
851 int ring;
852 struct qlcnic_host_sds_ring *sds_ring;
853
854 struct qlcnic_recv_context *recv_ctx = &adapter->recv_ctx;
855
856 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
857 sds_ring = &recv_ctx->sds_rings[ring];
858 free_irq(sds_ring->irq, sds_ring);
859 }
860}
861
862static void
863qlcnic_init_coalesce_defaults(struct qlcnic_adapter *adapter)
864{
865 adapter->coal.flags = QLCNIC_INTR_DEFAULT;
866 adapter->coal.normal.data.rx_time_us =
867 QLCNIC_DEFAULT_INTR_COALESCE_RX_TIME_US;
868 adapter->coal.normal.data.rx_packets =
869 QLCNIC_DEFAULT_INTR_COALESCE_RX_PACKETS;
870 adapter->coal.normal.data.tx_time_us =
871 QLCNIC_DEFAULT_INTR_COALESCE_TX_TIME_US;
872 adapter->coal.normal.data.tx_packets =
873 QLCNIC_DEFAULT_INTR_COALESCE_TX_PACKETS;
874}
875
876static int
877__qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
878{
879 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
880 return -EIO;
881
882 qlcnic_set_multi(netdev);
883 qlcnic_fw_cmd_set_mtu(adapter, netdev->mtu);
884
885 adapter->ahw.linkup = 0;
886
887 if (adapter->max_sds_rings > 1)
888 qlcnic_config_rss(adapter, 1);
889
890 qlcnic_config_intr_coalesce(adapter);
891
892 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
893 qlcnic_config_hw_lro(adapter, QLCNIC_LRO_ENABLED);
894
895 qlcnic_napi_enable(adapter);
896
897 qlcnic_linkevent_request(adapter, 1);
898
899 set_bit(__QLCNIC_DEV_UP, &adapter->state);
900 return 0;
901}
902
903/* Usage: During resume and firmware recovery module.*/
904
905static int
906qlcnic_up(struct qlcnic_adapter *adapter, struct net_device *netdev)
907{
908 int err = 0;
909
910 rtnl_lock();
911 if (netif_running(netdev))
912 err = __qlcnic_up(adapter, netdev);
913 rtnl_unlock();
914
915 return err;
916}
917
918static void
919__qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
920{
921 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
922 return;
923
924 if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
925 return;
926
927 smp_mb();
928 spin_lock(&adapter->tx_clean_lock);
929 netif_carrier_off(netdev);
930 netif_tx_disable(netdev);
931
932 qlcnic_free_mac_list(adapter);
933
934 qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
935
936 qlcnic_napi_disable(adapter);
937
938 qlcnic_release_tx_buffers(adapter);
939 spin_unlock(&adapter->tx_clean_lock);
940}
941
942/* Usage: During suspend and firmware recovery module */
943
944static void
945qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
946{
947 rtnl_lock();
948 if (netif_running(netdev))
949 __qlcnic_down(adapter, netdev);
950 rtnl_unlock();
951
952}
953
954static int
955qlcnic_attach(struct qlcnic_adapter *adapter)
956{
957 struct net_device *netdev = adapter->netdev;
958 struct pci_dev *pdev = adapter->pdev;
959 int err, ring;
960 struct qlcnic_host_rds_ring *rds_ring;
961
962 if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC)
963 return 0;
964
965 err = qlcnic_init_firmware(adapter);
966 if (err)
967 return err;
968
969 err = qlcnic_napi_add(adapter, netdev);
970 if (err)
971 return err;
972
973 err = qlcnic_alloc_sw_resources(adapter);
974 if (err) {
975 dev_err(&pdev->dev, "Error in setting sw resources\n");
976 return err;
977 }
978
979 err = qlcnic_alloc_hw_resources(adapter);
980 if (err) {
981 dev_err(&pdev->dev, "Error in setting hw resources\n");
982 goto err_out_free_sw;
983 }
984
985
986 for (ring = 0; ring < adapter->max_rds_rings; ring++) {
987 rds_ring = &adapter->recv_ctx.rds_rings[ring];
988 qlcnic_post_rx_buffers(adapter, ring, rds_ring);
989 }
990
991 err = qlcnic_request_irq(adapter);
992 if (err) {
993 dev_err(&pdev->dev, "failed to setup interrupt\n");
994 goto err_out_free_rxbuf;
995 }
996
997 qlcnic_init_coalesce_defaults(adapter);
998
999 qlcnic_create_sysfs_entries(adapter);
1000
1001 adapter->is_up = QLCNIC_ADAPTER_UP_MAGIC;
1002 return 0;
1003
1004err_out_free_rxbuf:
1005 qlcnic_release_rx_buffers(adapter);
1006 qlcnic_free_hw_resources(adapter);
1007err_out_free_sw:
1008 qlcnic_free_sw_resources(adapter);
1009 return err;
1010}
1011
1012static void
1013qlcnic_detach(struct qlcnic_adapter *adapter)
1014{
1015 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
1016 return;
1017
1018 qlcnic_remove_sysfs_entries(adapter);
1019
1020 qlcnic_free_hw_resources(adapter);
1021 qlcnic_release_rx_buffers(adapter);
1022 qlcnic_free_irq(adapter);
1023 qlcnic_napi_del(adapter);
1024 qlcnic_free_sw_resources(adapter);
1025
1026 adapter->is_up = 0;
1027}
1028
7eb9855d
AKS		 1029void qlcnic_diag_free_res(struct net_device *netdev, int max_sds_rings)
1030{
1031 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1032 struct qlcnic_host_sds_ring *sds_ring;
1033 int ring;
1034
78ad3892 1035 clear_bit(__QLCNIC_DEV_UP, &adapter->state);
cdaff185
AKS		 1036 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1037 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1038 sds_ring = &adapter->recv_ctx.sds_rings[ring];
1039 qlcnic_disable_int(sds_ring);
1040 }
7eb9855d
AKS		 1041 }
1042
1043 qlcnic_detach(adapter);
1044
1045 adapter->diag_test = 0;
1046 adapter->max_sds_rings = max_sds_rings;
1047
1048 if (qlcnic_attach(adapter))
34ce3626 1049 goto out;
7eb9855d
AKS		 1050
1051 if (netif_running(netdev))
1052 __qlcnic_up(adapter, netdev);
34ce3626 1053out:
7eb9855d
AKS		 1054 netif_device_attach(netdev);
1055}
1056
1057int qlcnic_diag_alloc_res(struct net_device *netdev, int test)
1058{
1059 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1060 struct qlcnic_host_sds_ring *sds_ring;
1061 int ring;
1062 int ret;
1063
1064 netif_device_detach(netdev);
1065
1066 if (netif_running(netdev))
1067 __qlcnic_down(adapter, netdev);
1068
1069 qlcnic_detach(adapter);
1070
1071 adapter->max_sds_rings = 1;
1072 adapter->diag_test = test;
1073
1074 ret = qlcnic_attach(adapter);
34ce3626
AKS		 1075 if (ret) {
1076 netif_device_attach(netdev);
7eb9855d 1077 return ret;
34ce3626 1078 }
7eb9855d 1079
cdaff185
AKS		 1080 if (adapter->diag_test == QLCNIC_INTERRUPT_TEST) {
1081 for (ring = 0; ring < adapter->max_sds_rings; ring++) {
1082 sds_ring = &adapter->recv_ctx.sds_rings[ring];
1083 qlcnic_enable_int(sds_ring);
1084 }
7eb9855d 1085 }
78ad3892 1086 set_bit(__QLCNIC_DEV_UP, &adapter->state);
7eb9855d
AKS		 1087
1088 return 0;
1089}
1090
af19b491
AKS		 1091int
1092qlcnic_reset_context(struct qlcnic_adapter *adapter)
1093{
1094 int err = 0;
1095 struct net_device *netdev = adapter->netdev;
1096
1097 if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1098 return -EBUSY;
1099
1100 if (adapter->is_up == QLCNIC_ADAPTER_UP_MAGIC) {
1101
1102 netif_device_detach(netdev);
1103
1104 if (netif_running(netdev))
1105 __qlcnic_down(adapter, netdev);
1106
1107 qlcnic_detach(adapter);
1108
1109 if (netif_running(netdev)) {
1110 err = qlcnic_attach(adapter);
1111 if (!err)
34ce3626 1112 __qlcnic_up(adapter, netdev);
af19b491
AKS		 1113 }
1114
1115 netif_device_attach(netdev);
1116 }
1117
af19b491
AKS		 1118 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1119 return err;
1120}
1121
1122static int
1123qlcnic_setup_netdev(struct qlcnic_adapter *adapter,
1bb09fb9 1124 struct net_device *netdev, u8 pci_using_dac)
af19b491
AKS		 1125{
1126 int err;
1127 struct pci_dev *pdev = adapter->pdev;
1128
1129 adapter->rx_csum = 1;
1130 adapter->mc_enabled = 0;
1131 adapter->max_mc_count = 38;
1132
1133 netdev->netdev_ops = &qlcnic_netdev_ops;
ef71ff83 1134 netdev->watchdog_timeo = 5*HZ;
af19b491
AKS		 1135
1136 qlcnic_change_mtu(netdev, netdev->mtu);
1137
1138 SET_ETHTOOL_OPS(netdev, &qlcnic_ethtool_ops);
1139
2e9d722d
AC		 1140 netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1141 NETIF_F_IPV6_CSUM | NETIF_F_GRO | NETIF_F_TSO | NETIF_F_TSO6);
af19b491 1142
2e9d722d
AC		 1143 netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM |
1144 NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6);
af19b491 1145
1bb09fb9 1146 if (pci_using_dac) {
af19b491
AKS		 1147 netdev->features |= NETIF_F_HIGHDMA;
1148 netdev->vlan_features |= NETIF_F_HIGHDMA;
1149 }
1150
1151 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_FVLANTX)
1152 netdev->features |= (NETIF_F_HW_VLAN_TX);
1153
1154 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_HW_LRO)
1155 netdev->features |= NETIF_F_LRO;
1156
1157 netdev->irq = adapter->msix_entries[0].vector;
1158
1159 INIT_WORK(&adapter->tx_timeout_task, qlcnic_tx_timeout_task);
1160
1161 if (qlcnic_read_mac_addr(adapter))
1162 dev_warn(&pdev->dev, "failed to read mac addr\n");
1163
1164 netif_carrier_off(netdev);
1165 netif_stop_queue(netdev);
1166
1167 err = register_netdev(netdev);
1168 if (err) {
1169 dev_err(&pdev->dev, "failed to register net device\n");
1170 return err;
1171 }
1172
1173 return 0;
1174}
1175
1bb09fb9
AKS		 1176static int qlcnic_set_dma_mask(struct pci_dev *pdev, u8 *pci_using_dac)
1177{
1178 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
1179 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1180 *pci_using_dac = 1;
1181 else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) &&
1182 !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
1183 *pci_using_dac = 0;
1184 else {
1185 dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n");
1186 return -EIO;
1187 }
1188
1189 return 0;
1190}
1191
af19b491
AKS		 1192static int __devinit
1193qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1194{
1195 struct net_device *netdev = NULL;
1196 struct qlcnic_adapter *adapter = NULL;
1197 int err;
af19b491 1198 uint8_t revision_id;
1bb09fb9 1199 uint8_t pci_using_dac;
af19b491
AKS		 1200
1201 err = pci_enable_device(pdev);
1202 if (err)
1203 return err;
1204
1205 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1206 err = -ENODEV;
1207 goto err_out_disable_pdev;
1208 }
1209
1bb09fb9
AKS		 1210 err = qlcnic_set_dma_mask(pdev, &pci_using_dac);
1211 if (err)
1212 goto err_out_disable_pdev;
1213
af19b491
AKS		 1214 err = pci_request_regions(pdev, qlcnic_driver_name);
1215 if (err)
1216 goto err_out_disable_pdev;
1217
1218 pci_set_master(pdev);
1219
1220 netdev = alloc_etherdev(sizeof(struct qlcnic_adapter));
1221 if (!netdev) {
1222 dev_err(&pdev->dev, "failed to allocate net_device\n");
1223 err = -ENOMEM;
1224 goto err_out_free_res;
1225 }
1226
1227 SET_NETDEV_DEV(netdev, &pdev->dev);
1228
1229 adapter = netdev_priv(netdev);
1230 adapter->netdev = netdev;
1231 adapter->pdev = pdev;
6df900e9 1232 adapter->dev_rst_time = jiffies;
af19b491
AKS		 1233
1234 revision_id = pdev->revision;
1235 adapter->ahw.revision_id = revision_id;
1236
1237 rwlock_init(&adapter->ahw.crb_lock);
1238 mutex_init(&adapter->ahw.mem_lock);
1239
1240 spin_lock_init(&adapter->tx_clean_lock);
1241 INIT_LIST_HEAD(&adapter->mac_list);
1242
1243 err = qlcnic_setup_pci_map(adapter);
1244 if (err)
1245 goto err_out_free_netdev;
1246
1247 /* This will be reset for mezz cards */
2e9d722d 1248 adapter->portnum = adapter->ahw.pci_func;
af19b491
AKS		 1249
1250 err = qlcnic_get_board_info(adapter);
1251 if (err) {
1252 dev_err(&pdev->dev, "Error getting board config info.\n");
1253 goto err_out_iounmap;
1254 }
1255
02f6e46f
SC		 1256 if (qlcnic_read_mac_addr(adapter))
1257 dev_warn(&pdev->dev, "failed to read mac addr\n");
1258
b3a24649
SC		 1259 if (qlcnic_setup_idc_param(adapter))
1260 goto err_out_iounmap;
af19b491 1261
9f26f547 1262 err = adapter->nic_ops->start_firmware(adapter);
a7fc948f
AKS		 1263 if (err) {
1264 dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n");
af19b491 1265 goto err_out_decr_ref;
a7fc948f 1266 }
af19b491 1267
af19b491
AKS		 1268 qlcnic_clear_stats(adapter);
1269
1270 qlcnic_setup_intr(adapter);
1271
1bb09fb9 1272 err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac);
af19b491
AKS		 1273 if (err)
1274 goto err_out_disable_msi;
1275
1276 pci_set_drvdata(pdev, adapter);
1277
1278 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1279
1280 switch (adapter->ahw.port_type) {
1281 case QLCNIC_GBE:
1282 dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
1283 adapter->netdev->name);
1284 break;
1285 case QLCNIC_XGBE:
1286 dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
1287 adapter->netdev->name);
1288 break;
1289 }
1290
1291 qlcnic_create_diag_entries(adapter);
1292
1293 return 0;
1294
1295err_out_disable_msi:
1296 qlcnic_teardown_intr(adapter);
1297
1298err_out_decr_ref:
1299 qlcnic_clr_all_drv_state(adapter);
1300
1301err_out_iounmap:
1302 qlcnic_cleanup_pci_map(adapter);
1303
1304err_out_free_netdev:
1305 free_netdev(netdev);
1306
1307err_out_free_res:
1308 pci_release_regions(pdev);
1309
1310err_out_disable_pdev:
1311 pci_set_drvdata(pdev, NULL);
1312 pci_disable_device(pdev);
1313 return err;
1314}
1315
1316static void __devexit qlcnic_remove(struct pci_dev *pdev)
1317{
1318 struct qlcnic_adapter *adapter;
1319 struct net_device *netdev;
1320
1321 adapter = pci_get_drvdata(pdev);
1322 if (adapter == NULL)
1323 return;
1324
1325 netdev = adapter->netdev;
1326
1327 qlcnic_cancel_fw_work(adapter);
1328
1329 unregister_netdev(netdev);
1330
1331 cancel_work_sync(&adapter->tx_timeout_task);
1332
1333 qlcnic_detach(adapter);
1334
2e9d722d
AC		 1335 if (adapter->npars != NULL)
1336 kfree(adapter->npars);
1337 if (adapter->eswitch != NULL)
1338 kfree(adapter->eswitch);
1339
af19b491
AKS		 1340 qlcnic_clr_all_drv_state(adapter);
1341
1342 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1343
1344 qlcnic_teardown_intr(adapter);
1345
1346 qlcnic_remove_diag_entries(adapter);
1347
1348 qlcnic_cleanup_pci_map(adapter);
1349
1350 qlcnic_release_firmware(adapter);
1351
1352 pci_release_regions(pdev);
1353 pci_disable_device(pdev);
1354 pci_set_drvdata(pdev, NULL);
1355
1356 free_netdev(netdev);
1357}
1358static int __qlcnic_shutdown(struct pci_dev *pdev)
1359{
1360 struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1361 struct net_device *netdev = adapter->netdev;
1362 int retval;
1363
1364 netif_device_detach(netdev);
1365
1366 qlcnic_cancel_fw_work(adapter);
1367
1368 if (netif_running(netdev))
1369 qlcnic_down(adapter, netdev);
1370
1371 cancel_work_sync(&adapter->tx_timeout_task);
1372
1373 qlcnic_detach(adapter);
1374
1375 qlcnic_clr_all_drv_state(adapter);
1376
1377 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1378
1379 retval = pci_save_state(pdev);
1380 if (retval)
1381 return retval;
1382
1383 if (qlcnic_wol_supported(adapter)) {
1384 pci_enable_wake(pdev, PCI_D3cold, 1);
1385 pci_enable_wake(pdev, PCI_D3hot, 1);
1386 }
1387
1388 return 0;
1389}
1390
1391static void qlcnic_shutdown(struct pci_dev *pdev)
1392{
1393 if (__qlcnic_shutdown(pdev))
1394 return;
1395
1396 pci_disable_device(pdev);
1397}
1398
1399#ifdef CONFIG_PM
1400static int
1401qlcnic_suspend(struct pci_dev *pdev, pm_message_t state)
1402{
1403 int retval;
1404
1405 retval = __qlcnic_shutdown(pdev);
1406 if (retval)
1407 return retval;
1408
1409 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1410 return 0;
1411}
1412
1413static int
1414qlcnic_resume(struct pci_dev *pdev)
1415{
1416 struct qlcnic_adapter *adapter = pci_get_drvdata(pdev);
1417 struct net_device *netdev = adapter->netdev;
1418 int err;
1419
1420 err = pci_enable_device(pdev);
1421 if (err)
1422 return err;
1423
1424 pci_set_power_state(pdev, PCI_D0);
1425 pci_set_master(pdev);
1426 pci_restore_state(pdev);
1427
9f26f547 1428 err = adapter->nic_ops->start_firmware(adapter);
af19b491
AKS		 1429 if (err) {
1430 dev_err(&pdev->dev, "failed to start firmware\n");
1431 return err;
1432 }
1433
1434 if (netif_running(netdev)) {
1435 err = qlcnic_attach(adapter);
1436 if (err)
1437 goto err_out;
1438
1439 err = qlcnic_up(adapter, netdev);
1440 if (err)
1441 goto err_out_detach;
1442
1443
1444 qlcnic_config_indev_addr(netdev, NETDEV_UP);
1445 }
1446
1447 netif_device_attach(netdev);
1448 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
1449 return 0;
1450
1451err_out_detach:
1452 qlcnic_detach(adapter);
1453err_out:
1454 qlcnic_clr_all_drv_state(adapter);
34ce3626 1455 netif_device_attach(netdev);
af19b491
AKS		 1456 return err;
1457}
1458#endif
1459
1460static int qlcnic_open(struct net_device *netdev)
1461{
1462 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1463 int err;
1464
1465 if (adapter->driver_mismatch)
1466 return -EIO;
1467
1468 err = qlcnic_attach(adapter);
1469 if (err)
1470 return err;
1471
1472 err = __qlcnic_up(adapter, netdev);
1473 if (err)
1474 goto err_out;
1475
1476 netif_start_queue(netdev);
1477
1478 return 0;
1479
1480err_out:
1481 qlcnic_detach(adapter);
1482 return err;
1483}
1484
1485/*
1486 * qlcnic_close - Disables a network interface entry point
1487 */
1488static int qlcnic_close(struct net_device *netdev)
1489{
1490 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1491
1492 __qlcnic_down(adapter, netdev);
1493 return 0;
1494}
1495
1496static void
1497qlcnic_tso_check(struct net_device *netdev,
1498 struct qlcnic_host_tx_ring *tx_ring,
1499 struct cmd_desc_type0 *first_desc,
1500 struct sk_buff *skb)
1501{
1502 u8 opcode = TX_ETHER_PKT;
1503 __be16 protocol = skb->protocol;
1504 u16 flags = 0, vid = 0;
af19b491
AKS		 1505 int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0;
1506 struct cmd_desc_type0 *hwdesc;
1507 struct vlan_ethhdr *vh;
8bfe8b91 1508 struct qlcnic_adapter *adapter = netdev_priv(netdev);
2e9d722d 1509 u32 producer = tx_ring->producer;
af19b491
AKS		 1510
1511 if (protocol == cpu_to_be16(ETH_P_8021Q)) {
1512
1513 vh = (struct vlan_ethhdr *)skb->data;
1514 protocol = vh->h_vlan_encapsulated_proto;
1515 flags = FLAGS_VLAN_TAGGED;
1516
1517 } else if (vlan_tx_tag_present(skb)) {
1518
1519 flags = FLAGS_VLAN_OOB;
1520 vid = vlan_tx_tag_get(skb);
1521 qlcnic_set_tx_vlan_tci(first_desc, vid);
1522 vlan_oob = 1;
1523 }
1524
2e9d722d
AC		 1525 if (*(skb->data) & BIT_0) {
1526 flags |= BIT_0;
1527 memcpy(&first_desc->eth_addr, skb->data, ETH_ALEN);
1528 }
1529
af19b491
AKS		 1530 if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
1531 skb_shinfo(skb)->gso_size > 0) {
1532
1533 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
1534
1535 first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
1536 first_desc->total_hdr_length = hdr_len;
1537 if (vlan_oob) {
1538 first_desc->total_hdr_length += VLAN_HLEN;
1539 first_desc->tcp_hdr_offset = VLAN_HLEN;
1540 first_desc->ip_hdr_offset = VLAN_HLEN;
1541 /* Only in case of TSO on vlan device */
1542 flags |= FLAGS_VLAN_TAGGED;
1543 }
1544
1545 opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ?
1546 TX_TCP_LSO6 : TX_TCP_LSO;
1547 tso = 1;
1548
1549 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
1550 u8 l4proto;
1551
1552 if (protocol == cpu_to_be16(ETH_P_IP)) {
1553 l4proto = ip_hdr(skb)->protocol;
1554
1555 if (l4proto == IPPROTO_TCP)
1556 opcode = TX_TCP_PKT;
1557 else if (l4proto == IPPROTO_UDP)
1558 opcode = TX_UDP_PKT;
1559 } else if (protocol == cpu_to_be16(ETH_P_IPV6)) {
1560 l4proto = ipv6_hdr(skb)->nexthdr;
1561
1562 if (l4proto == IPPROTO_TCP)
1563 opcode = TX_TCPV6_PKT;
1564 else if (l4proto == IPPROTO_UDP)
1565 opcode = TX_UDPV6_PKT;
1566 }
1567 }
1568
1569 first_desc->tcp_hdr_offset += skb_transport_offset(skb);
1570 first_desc->ip_hdr_offset += skb_network_offset(skb);
1571 qlcnic_set_tx_flags_opcode(first_desc, flags, opcode);
1572
1573 if (!tso)
1574 return;
1575
1576 /* For LSO, we need to copy the MAC/IP/TCP headers into
1577 * the descriptor ring
1578 */
af19b491
AKS		 1579 copied = 0;
1580 offset = 2;
1581
1582 if (vlan_oob) {
1583 /* Create a TSO vlan header template for firmware */
1584
1585 hwdesc = &tx_ring->desc_head[producer];
1586 tx_ring->cmd_buf_arr[producer].skb = NULL;
1587
1588 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1589 hdr_len + VLAN_HLEN);
1590
1591 vh = (struct vlan_ethhdr *)((char *)hwdesc + 2);
1592 skb_copy_from_linear_data(skb, vh, 12);
1593 vh->h_vlan_proto = htons(ETH_P_8021Q);
1594 vh->h_vlan_TCI = htons(vid);
1595 skb_copy_from_linear_data_offset(skb, 12,
1596 (char *)vh + 16, copy_len - 16);
1597
1598 copied = copy_len - VLAN_HLEN;
1599 offset = 0;
1600
1601 producer = get_next_index(producer, tx_ring->num_desc);
1602 }
1603
1604 while (copied < hdr_len) {
1605
1606 copy_len = min((int)sizeof(struct cmd_desc_type0) - offset,
1607 (hdr_len - copied));
1608
1609 hwdesc = &tx_ring->desc_head[producer];
1610 tx_ring->cmd_buf_arr[producer].skb = NULL;
1611
1612 skb_copy_from_linear_data_offset(skb, copied,
1613 (char *)hwdesc + offset, copy_len);
1614
1615 copied += copy_len;
1616 offset = 0;
1617
1618 producer = get_next_index(producer, tx_ring->num_desc);
1619 }
1620
1621 tx_ring->producer = producer;
1622 barrier();
8bfe8b91 1623 adapter->stats.lso_frames++;
af19b491
AKS		 1624}
1625
1626static int
1627qlcnic_map_tx_skb(struct pci_dev *pdev,
1628 struct sk_buff *skb, struct qlcnic_cmd_buffer *pbuf)
1629{
1630 struct qlcnic_skb_frag *nf;
1631 struct skb_frag_struct *frag;
1632 int i, nr_frags;
1633 dma_addr_t map;
1634
1635 nr_frags = skb_shinfo(skb)->nr_frags;
1636 nf = &pbuf->frag_array[0];
1637
1638 map = pci_map_single(pdev, skb->data,
1639 skb_headlen(skb), PCI_DMA_TODEVICE);
1640 if (pci_dma_mapping_error(pdev, map))
1641 goto out_err;
1642
1643 nf->dma = map;
1644 nf->length = skb_headlen(skb);
1645
1646 for (i = 0; i < nr_frags; i++) {
1647 frag = &skb_shinfo(skb)->frags[i];
1648 nf = &pbuf->frag_array[i+1];
1649
1650 map = pci_map_page(pdev, frag->page, frag->page_offset,
1651 frag->size, PCI_DMA_TODEVICE);
1652 if (pci_dma_mapping_error(pdev, map))
1653 goto unwind;
1654
1655 nf->dma = map;
1656 nf->length = frag->size;
1657 }
1658
1659 return 0;
1660
1661unwind:
1662 while (--i >= 0) {
1663 nf = &pbuf->frag_array[i+1];
1664 pci_unmap_page(pdev, nf->dma, nf->length, PCI_DMA_TODEVICE);
1665 }
1666
1667 nf = &pbuf->frag_array[0];
1668 pci_unmap_single(pdev, nf->dma, skb_headlen(skb), PCI_DMA_TODEVICE);
1669
1670out_err:
1671 return -ENOMEM;
1672}
1673
1674static inline void
1675qlcnic_clear_cmddesc(u64 *desc)
1676{
1677 desc[0] = 0ULL;
1678 desc[2] = 0ULL;
1679}
1680
cdaff185 1681netdev_tx_t
af19b491
AKS		 1682qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1683{
1684 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1685 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1686 struct qlcnic_cmd_buffer *pbuf;
1687 struct qlcnic_skb_frag *buffrag;
1688 struct cmd_desc_type0 *hwdesc, *first_desc;
1689 struct pci_dev *pdev;
1690 int i, k;
1691
1692 u32 producer;
1693 int frag_count, no_of_desc;
1694 u32 num_txd = tx_ring->num_desc;
1695
780ab790
AKS		 1696 if (!test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
1697 netif_stop_queue(netdev);
1698 return NETDEV_TX_BUSY;
1699 }
1700
af19b491
AKS		 1701 frag_count = skb_shinfo(skb)->nr_frags + 1;
1702
1703 /* 4 fragments per cmd des */
1704 no_of_desc = (frag_count + 3) >> 2;
1705
ef71ff83 1706 if (unlikely(qlcnic_tx_avail(tx_ring) <= TX_STOP_THRESH)) {
af19b491 1707 netif_stop_queue(netdev);
ef71ff83
RB		 1708 smp_mb();
1709 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH)
1710 netif_start_queue(netdev);
1711 else {
1712 adapter->stats.xmit_off++;
1713 return NETDEV_TX_BUSY;
1714 }
af19b491
AKS		 1715 }
1716
1717 producer = tx_ring->producer;
1718 pbuf = &tx_ring->cmd_buf_arr[producer];
1719
1720 pdev = adapter->pdev;
1721
8ae6df97
AKS		 1722 if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
1723 adapter->stats.tx_dma_map_error++;
af19b491 1724 goto drop_packet;
8ae6df97 1725 }
af19b491
AKS		 1726
1727 pbuf->skb = skb;
1728 pbuf->frag_count = frag_count;
1729
1730 first_desc = hwdesc = &tx_ring->desc_head[producer];
1731 qlcnic_clear_cmddesc((u64 *)hwdesc);
1732
1733 qlcnic_set_tx_frags_len(first_desc, frag_count, skb->len);
1734 qlcnic_set_tx_port(first_desc, adapter->portnum);
1735
1736 for (i = 0; i < frag_count; i++) {
1737
1738 k = i % 4;
1739
1740 if ((k == 0) && (i > 0)) {
1741 /* move to next desc.*/
1742 producer = get_next_index(producer, num_txd);
1743 hwdesc = &tx_ring->desc_head[producer];
1744 qlcnic_clear_cmddesc((u64 *)hwdesc);
1745 tx_ring->cmd_buf_arr[producer].skb = NULL;
1746 }
1747
1748 buffrag = &pbuf->frag_array[i];
1749
1750 hwdesc->buffer_length[k] = cpu_to_le16(buffrag->length);
1751 switch (k) {
1752 case 0:
1753 hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
1754 break;
1755 case 1:
1756 hwdesc->addr_buffer2 = cpu_to_le64(buffrag->dma);
1757 break;
1758 case 2:
1759 hwdesc->addr_buffer3 = cpu_to_le64(buffrag->dma);
1760 break;
1761 case 3:
1762 hwdesc->addr_buffer4 = cpu_to_le64(buffrag->dma);
1763 break;
1764 }
1765 }
1766
1767 tx_ring->producer = get_next_index(producer, num_txd);
1768
1769 qlcnic_tso_check(netdev, tx_ring, first_desc, skb);
1770
1771 qlcnic_update_cmd_producer(adapter, tx_ring);
1772
1773 adapter->stats.txbytes += skb->len;
1774 adapter->stats.xmitcalled++;
1775
1776 return NETDEV_TX_OK;
1777
1778drop_packet:
1779 adapter->stats.txdropped++;
1780 dev_kfree_skb_any(skb);
1781 return NETDEV_TX_OK;
1782}
1783
1784static int qlcnic_check_temp(struct qlcnic_adapter *adapter)
1785{
1786 struct net_device *netdev = adapter->netdev;
1787 u32 temp, temp_state, temp_val;
1788 int rv = 0;
1789
1790 temp = QLCRD32(adapter, CRB_TEMP_STATE);
1791
1792 temp_state = qlcnic_get_temp_state(temp);
1793 temp_val = qlcnic_get_temp_val(temp);
1794
1795 if (temp_state == QLCNIC_TEMP_PANIC) {
1796 dev_err(&netdev->dev,
1797 "Device temperature %d degrees C exceeds"
1798 " maximum allowed. Hardware has been shut down.\n",
1799 temp_val);
1800 rv = 1;
1801 } else if (temp_state == QLCNIC_TEMP_WARN) {
1802 if (adapter->temp == QLCNIC_TEMP_NORMAL) {
1803 dev_err(&netdev->dev,
1804 "Device temperature %d degrees C "
1805 "exceeds operating range."
1806 " Immediate action needed.\n",
1807 temp_val);
1808 }
1809 } else {
1810 if (adapter->temp == QLCNIC_TEMP_WARN) {
1811 dev_info(&netdev->dev,
1812 "Device temperature is now %d degrees C"
1813 " in normal range.\n", temp_val);
1814 }
1815 }
1816 adapter->temp = temp_state;
1817 return rv;
1818}
1819
1820void qlcnic_advert_link_change(struct qlcnic_adapter *adapter, int linkup)
1821{
1822 struct net_device *netdev = adapter->netdev;
1823
1824 if (adapter->ahw.linkup && !linkup) {
1825 dev_info(&netdev->dev, "NIC Link is down\n");
1826 adapter->ahw.linkup = 0;
1827 if (netif_running(netdev)) {
1828 netif_carrier_off(netdev);
1829 netif_stop_queue(netdev);
1830 }
1831 } else if (!adapter->ahw.linkup && linkup) {
1832 dev_info(&netdev->dev, "NIC Link is up\n");
1833 adapter->ahw.linkup = 1;
1834 if (netif_running(netdev)) {
1835 netif_carrier_on(netdev);
1836 netif_wake_queue(netdev);
1837 }
1838 }
1839}
1840
1841static void qlcnic_tx_timeout(struct net_device *netdev)
1842{
1843 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1844
1845 if (test_bit(__QLCNIC_RESETTING, &adapter->state))
1846 return;
1847
1848 dev_err(&netdev->dev, "transmit timeout, resetting.\n");
1849 schedule_work(&adapter->tx_timeout_task);
1850}
1851
1852static void qlcnic_tx_timeout_task(struct work_struct *work)
1853{
1854 struct qlcnic_adapter *adapter =
1855 container_of(work, struct qlcnic_adapter, tx_timeout_task);
1856
1857 if (!netif_running(adapter->netdev))
1858 return;
1859
1860 if (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
1861 return;
1862
1863 if (++adapter->tx_timeo_cnt >= QLCNIC_MAX_TX_TIMEOUTS)
1864 goto request_reset;
1865
1866 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1867 if (!qlcnic_reset_context(adapter)) {
1868 adapter->netdev->trans_start = jiffies;
1869 return;
1870
1871 /* context reset failed, fall through for fw reset */
1872 }
1873
1874request_reset:
1875 adapter->need_fw_reset = 1;
1876 clear_bit(__QLCNIC_RESETTING, &adapter->state);
65b5b420 1877 QLCDB(adapter, DRV, "Resetting adapter\n");
af19b491
AKS		 1878}
1879
1880static struct net_device_stats *qlcnic_get_stats(struct net_device *netdev)
1881{
1882 struct qlcnic_adapter *adapter = netdev_priv(netdev);
1883 struct net_device_stats *stats = &netdev->stats;
1884
1885 memset(stats, 0, sizeof(*stats));
1886
1887 stats->rx_packets = adapter->stats.rx_pkts + adapter->stats.lro_pkts;
1888 stats->tx_packets = adapter->stats.xmitfinished;
7e382594 1889 stats->rx_bytes = adapter->stats.rxbytes + adapter->stats.lrobytes;
af19b491
AKS		 1890 stats->tx_bytes = adapter->stats.txbytes;
1891 stats->rx_dropped = adapter->stats.rxdropped;
1892 stats->tx_dropped = adapter->stats.txdropped;
1893
1894 return stats;
1895}
1896
7eb9855d 1897static irqreturn_t qlcnic_clear_legacy_intr(struct qlcnic_adapter *adapter)
af19b491 1898{
af19b491
AKS		 1899 u32 status;
1900
1901 status = readl(adapter->isr_int_vec);
1902
1903 if (!(status & adapter->int_vec_bit))
1904 return IRQ_NONE;
1905
1906 /* check interrupt state machine, to be sure */
1907 status = readl(adapter->crb_int_state_reg);
1908 if (!ISR_LEGACY_INT_TRIGGERED(status))
1909 return IRQ_NONE;
1910
1911 writel(0xffffffff, adapter->tgt_status_reg);
1912 /* read twice to ensure write is flushed */
1913 readl(adapter->isr_int_vec);
1914 readl(adapter->isr_int_vec);
1915
7eb9855d
AKS		 1916 return IRQ_HANDLED;
1917}
1918
1919static irqreturn_t qlcnic_tmp_intr(int irq, void *data)
1920{
1921 struct qlcnic_host_sds_ring *sds_ring = data;
1922 struct qlcnic_adapter *adapter = sds_ring->adapter;
1923
1924 if (adapter->flags & QLCNIC_MSIX_ENABLED)
1925 goto done;
1926 else if (adapter->flags & QLCNIC_MSI_ENABLED) {
1927 writel(0xffffffff, adapter->tgt_status_reg);
1928 goto done;
1929 }
1930
1931 if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1932 return IRQ_NONE;
1933
1934done:
1935 adapter->diag_cnt++;
1936 qlcnic_enable_int(sds_ring);
1937 return IRQ_HANDLED;
1938}
1939
1940static irqreturn_t qlcnic_intr(int irq, void *data)
1941{
1942 struct qlcnic_host_sds_ring *sds_ring = data;
1943 struct qlcnic_adapter *adapter = sds_ring->adapter;
1944
1945 if (qlcnic_clear_legacy_intr(adapter) == IRQ_NONE)
1946 return IRQ_NONE;
1947
af19b491
AKS		 1948 napi_schedule(&sds_ring->napi);
1949
1950 return IRQ_HANDLED;
1951}
1952
1953static irqreturn_t qlcnic_msi_intr(int irq, void *data)
1954{
1955 struct qlcnic_host_sds_ring *sds_ring = data;
1956 struct qlcnic_adapter *adapter = sds_ring->adapter;
1957
1958 /* clear interrupt */
1959 writel(0xffffffff, adapter->tgt_status_reg);
1960
1961 napi_schedule(&sds_ring->napi);
1962 return IRQ_HANDLED;
1963}
1964
1965static irqreturn_t qlcnic_msix_intr(int irq, void *data)
1966{
1967 struct qlcnic_host_sds_ring *sds_ring = data;
1968
1969 napi_schedule(&sds_ring->napi);
1970 return IRQ_HANDLED;
1971}
1972
1973static int qlcnic_process_cmd_ring(struct qlcnic_adapter *adapter)
1974{
1975 u32 sw_consumer, hw_consumer;
1976 int count = 0, i;
1977 struct qlcnic_cmd_buffer *buffer;
1978 struct pci_dev *pdev = adapter->pdev;
1979 struct net_device *netdev = adapter->netdev;
1980 struct qlcnic_skb_frag *frag;
1981 int done;
1982 struct qlcnic_host_tx_ring *tx_ring = adapter->tx_ring;
1983
1984 if (!spin_trylock(&adapter->tx_clean_lock))
1985 return 1;
1986
1987 sw_consumer = tx_ring->sw_consumer;
1988 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
1989
1990 while (sw_consumer != hw_consumer) {
1991 buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1992 if (buffer->skb) {
1993 frag = &buffer->frag_array[0];
1994 pci_unmap_single(pdev, frag->dma, frag->length,
1995 PCI_DMA_TODEVICE);
1996 frag->dma = 0ULL;
1997 for (i = 1; i < buffer->frag_count; i++) {
1998 frag++;
1999 pci_unmap_page(pdev, frag->dma, frag->length,
2000 PCI_DMA_TODEVICE);
2001 frag->dma = 0ULL;
2002 }
2003
2004 adapter->stats.xmitfinished++;
2005 dev_kfree_skb_any(buffer->skb);
2006 buffer->skb = NULL;
2007 }
2008
2009 sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
2010 if (++count >= MAX_STATUS_HANDLE)
2011 break;
2012 }
2013
2014 if (count && netif_running(netdev)) {
2015 tx_ring->sw_consumer = sw_consumer;
2016
2017 smp_mb();
2018
2019 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
af19b491
AKS		 2020 if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH) {
2021 netif_wake_queue(netdev);
8bfe8b91 2022 adapter->stats.xmit_on++;
af19b491 2023 }
af19b491 2024 }
ef71ff83 2025 adapter->tx_timeo_cnt = 0;
af19b491
AKS		 2026 }
2027 /*
2028 * If everything is freed up to consumer then check if the ring is full
2029 * If the ring is full then check if more needs to be freed and
2030 * schedule the call back again.
2031 *
2032 * This happens when there are 2 CPUs. One could be freeing and the
2033 * other filling it. If the ring is full when we get out of here and
2034 * the card has already interrupted the host then the host can miss the
2035 * interrupt.
2036 *
2037 * There is still a possible race condition and the host could miss an
2038 * interrupt. The card has to take care of this.
2039 */
2040 hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
2041 done = (sw_consumer == hw_consumer);
2042 spin_unlock(&adapter->tx_clean_lock);
2043
2044 return done;
2045}
2046
2047static int qlcnic_poll(struct napi_struct *napi, int budget)
2048{
2049 struct qlcnic_host_sds_ring *sds_ring =
2050 container_of(napi, struct qlcnic_host_sds_ring, napi);
2051
2052 struct qlcnic_adapter *adapter = sds_ring->adapter;
2053
2054 int tx_complete;
2055 int work_done;
2056
2057 tx_complete = qlcnic_process_cmd_ring(adapter);
2058
2059 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2060
2061 if ((work_done < budget) && tx_complete) {
2062 napi_complete(&sds_ring->napi);
2063 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2064 qlcnic_enable_int(sds_ring);
2065 }
2066
2067 return work_done;
2068}
2069
8f891387 2070static int qlcnic_rx_poll(struct napi_struct *napi, int budget)
2071{
2072 struct qlcnic_host_sds_ring *sds_ring =
2073 container_of(napi, struct qlcnic_host_sds_ring, napi);
2074
2075 struct qlcnic_adapter *adapter = sds_ring->adapter;
2076 int work_done;
2077
2078 work_done = qlcnic_process_rcv_ring(sds_ring, budget);
2079
2080 if (work_done < budget) {
2081 napi_complete(&sds_ring->napi);
2082 if (test_bit(__QLCNIC_DEV_UP, &adapter->state))
2083 qlcnic_enable_int(sds_ring);
2084 }
2085
2086 return work_done;
2087}
2088
af19b491
AKS		 2089#ifdef CONFIG_NET_POLL_CONTROLLER
2090static void qlcnic_poll_controller(struct net_device *netdev)
2091{
2092 struct qlcnic_adapter *adapter = netdev_priv(netdev);
2093 disable_irq(adapter->irq);
2094 qlcnic_intr(adapter->irq, adapter);
2095 enable_irq(adapter->irq);
2096}
2097#endif
2098
6df900e9
SC		 2099static void
2100qlcnic_idc_debug_info(struct qlcnic_adapter *adapter, u8 encoding)
2101{
2102 u32 val;
2103
2104 val = adapter->portnum & 0xf;
2105 val |= encoding << 7;
2106 val |= (jiffies - adapter->dev_rst_time) << 8;
2107
2108 QLCWR32(adapter, QLCNIC_CRB_DRV_SCRATCH, val);
2109 adapter->dev_rst_time = jiffies;
2110}
2111
ade91f8e
AKS		 2112static int
2113qlcnic_set_drv_state(struct qlcnic_adapter *adapter, u8 state)
af19b491
AKS		 2114{
2115 u32 val;
2116
2117 WARN_ON(state != QLCNIC_DEV_NEED_RESET &&
2118 state != QLCNIC_DEV_NEED_QUISCENT);
2119
2120 if (qlcnic_api_lock(adapter))
ade91f8e 2121 return -EIO;
af19b491
AKS		 2122
2123 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2124
2125 if (state == QLCNIC_DEV_NEED_RESET)
6d2a4724 2126 QLC_DEV_SET_RST_RDY(val, adapter->portnum);
af19b491 2127 else if (state == QLCNIC_DEV_NEED_QUISCENT)
6d2a4724 2128 QLC_DEV_SET_QSCNT_RDY(val, adapter->portnum);
af19b491
AKS		 2129
2130 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2131
2132 qlcnic_api_unlock(adapter);
ade91f8e
AKS		 2133
2134 return 0;
af19b491
AKS		 2135}
2136
1b95a839
AKS		 2137static int
2138qlcnic_clr_drv_state(struct qlcnic_adapter *adapter)
2139{
2140 u32 val;
2141
2142 if (qlcnic_api_lock(adapter))
2143 return -EBUSY;
2144
2145 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 2146 QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
1b95a839
AKS		 2147 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2148
2149 qlcnic_api_unlock(adapter);
2150
2151 return 0;
2152}
2153
af19b491
AKS		 2154static void
2155qlcnic_clr_all_drv_state(struct qlcnic_adapter *adapter)
2156{
2157 u32 val;
2158
2159 if (qlcnic_api_lock(adapter))
2160 goto err;
2161
2162 val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
6d2a4724 2163 QLC_DEV_CLR_REF_CNT(val, adapter->portnum);
af19b491
AKS		 2164 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
2165
2166 if (!(val & 0x11111111))
2167 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_COLD);
2168
2169 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 2170 QLC_DEV_CLR_RST_QSCNT(val, adapter->portnum);
af19b491
AKS		 2171 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2172
2173 qlcnic_api_unlock(adapter);
2174err:
2175 adapter->fw_fail_cnt = 0;
2176 clear_bit(__QLCNIC_START_FW, &adapter->state);
2177 clear_bit(__QLCNIC_RESETTING, &adapter->state);
2178}
2179
f73dfc50 2180/* Grab api lock, before checking state */
af19b491
AKS		 2181static int
2182qlcnic_check_drv_state(struct qlcnic_adapter *adapter)
2183{
2184 int act, state;
2185
2186 state = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
2187 act = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
2188
2189 if (((state & 0x11111111) == (act & 0x11111111)) ||
2190 ((act & 0x11111111) == ((state >> 1) & 0x11111111)))
2191 return 0;
2192 else
2193 return 1;
2194}
2195
96f8118c
SC		 2196static int qlcnic_check_idc_ver(struct qlcnic_adapter *adapter)
2197{
2198 u32 val = QLCRD32(adapter, QLCNIC_CRB_DRV_IDC_VER);
2199
2200 if (val != QLCNIC_DRV_IDC_VER) {
2201 dev_warn(&adapter->pdev->dev, "IDC Version mismatch, driver's"
2202 " idc ver = %x; reqd = %x\n", QLCNIC_DRV_IDC_VER, val);
2203 }
2204
2205 return 0;
2206}
2207
af19b491
AKS		 2208static int
2209qlcnic_can_start_firmware(struct qlcnic_adapter *adapter)
2210{
2211 u32 val, prev_state;
aa5e18c0 2212 u8 dev_init_timeo = adapter->dev_init_timeo;
6d2a4724 2213 u8 portnum = adapter->portnum;
96f8118c 2214 u8 ret;
af19b491 2215
f73dfc50
AKS		 2216 if (test_and_clear_bit(__QLCNIC_START_FW, &adapter->state))
2217 return 1;
2218
af19b491
AKS		 2219 if (qlcnic_api_lock(adapter))
2220 return -1;
2221
2222 val = QLCRD32(adapter, QLCNIC_CRB_DEV_REF_COUNT);
6d2a4724
AKS		 2223 if (!(val & (1 << (portnum * 4)))) {
2224 QLC_DEV_SET_REF_CNT(val, portnum);
af19b491 2225 QLCWR32(adapter, QLCNIC_CRB_DEV_REF_COUNT, val);
af19b491
AKS		 2226 }
2227
2228 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
65b5b420 2229 QLCDB(adapter, HW, "Device state = %u\n", prev_state);
af19b491
AKS		 2230
2231 switch (prev_state) {
2232 case QLCNIC_DEV_COLD:
bbd8c6a4 2233 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_INITIALIZING);
96f8118c 2234 QLCWR32(adapter, QLCNIC_CRB_DRV_IDC_VER, QLCNIC_DRV_IDC_VER);
6df900e9 2235 qlcnic_idc_debug_info(adapter, 0);
af19b491
AKS		 2236 qlcnic_api_unlock(adapter);
2237 return 1;
2238
2239 case QLCNIC_DEV_READY:
96f8118c 2240 ret = qlcnic_check_idc_ver(adapter);
af19b491 2241 qlcnic_api_unlock(adapter);
96f8118c 2242 return ret;
af19b491
AKS		 2243
2244 case QLCNIC_DEV_NEED_RESET:
2245 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 2246 QLC_DEV_SET_RST_RDY(val, portnum);
af19b491
AKS		 2247 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2248 break;
2249
2250 case QLCNIC_DEV_NEED_QUISCENT:
2251 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 2252 QLC_DEV_SET_QSCNT_RDY(val, portnum);
af19b491
AKS		 2253 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2254 break;
2255
2256 case QLCNIC_DEV_FAILED:
a7fc948f 2257 dev_err(&adapter->pdev->dev, "Device in failed state.\n");
af19b491
AKS		 2258 qlcnic_api_unlock(adapter);
2259 return -1;
bbd8c6a4
AKS		 2260
2261 case QLCNIC_DEV_INITIALIZING:
2262 case QLCNIC_DEV_QUISCENT:
2263 break;
af19b491
AKS		 2264 }
2265
2266 qlcnic_api_unlock(adapter);
aa5e18c0
SC		 2267
2268 do {
af19b491 2269 msleep(1000);
a5e463d0
SC		 2270 prev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2271
2272 if (prev_state == QLCNIC_DEV_QUISCENT)
2273 continue;
2274 } while ((prev_state != QLCNIC_DEV_READY) && --dev_init_timeo);
af19b491 2275
65b5b420
AKS		 2276 if (!dev_init_timeo) {
2277 dev_err(&adapter->pdev->dev,
2278 "Waiting for device to initialize timeout\n");
af19b491 2279 return -1;
65b5b420 2280 }
af19b491
AKS		 2281
2282 if (qlcnic_api_lock(adapter))
2283 return -1;
2284
2285 val = QLCRD32(adapter, QLCNIC_CRB_DRV_STATE);
6d2a4724 2286 QLC_DEV_CLR_RST_QSCNT(val, portnum);
af19b491
AKS		 2287 QLCWR32(adapter, QLCNIC_CRB_DRV_STATE, val);
2288
96f8118c 2289 ret = qlcnic_check_idc_ver(adapter);
af19b491
AKS		 2290 qlcnic_api_unlock(adapter);
2291
96f8118c 2292 return ret;
af19b491
AKS		 2293}
2294
2295static void
2296qlcnic_fwinit_work(struct work_struct *work)
2297{
2298 struct qlcnic_adapter *adapter = container_of(work,
2299 struct qlcnic_adapter, fw_work.work);
9f26f547 2300 u32 dev_state = 0xf, npar_state;
af19b491 2301
f73dfc50
AKS		 2302 if (qlcnic_api_lock(adapter))
2303 goto err_ret;
af19b491 2304
a5e463d0
SC		 2305 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2306 if (dev_state == QLCNIC_DEV_QUISCENT) {
2307 qlcnic_api_unlock(adapter);
2308 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2309 FW_POLL_DELAY * 2);
2310 return;
2311 }
2312
9f26f547
AC		 2313 if (adapter->op_mode == QLCNIC_NON_PRIV_FUNC) {
2314 npar_state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2315 if (npar_state == QLCNIC_DEV_NPAR_RDY) {
2316 qlcnic_api_unlock(adapter);
2317 goto wait_npar;
2318 } else {
2319 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2320 FW_POLL_DELAY);
2321 qlcnic_api_unlock(adapter);
2322 return;
2323 }
2324 }
2325
f73dfc50
AKS		 2326 if (adapter->fw_wait_cnt++ > adapter->reset_ack_timeo) {
2327 dev_err(&adapter->pdev->dev, "Reset:Failed to get ack %d sec\n",
2328 adapter->reset_ack_timeo);
2329 goto skip_ack_check;
2330 }
2331
2332 if (!qlcnic_check_drv_state(adapter)) {
2333skip_ack_check:
2334 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
a5e463d0
SC		 2335
2336 if (dev_state == QLCNIC_DEV_NEED_QUISCENT) {
2337 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2338 QLCNIC_DEV_QUISCENT);
2339 qlcnic_schedule_work(adapter, qlcnic_fwinit_work,
2340 FW_POLL_DELAY * 2);
2341 QLCDB(adapter, DRV, "Quiscing the driver\n");
6df900e9
SC		 2342 qlcnic_idc_debug_info(adapter, 0);
2343
a5e463d0
SC		 2344 qlcnic_api_unlock(adapter);
2345 return;
2346 }
2347
f73dfc50
AKS		 2348 if (dev_state == QLCNIC_DEV_NEED_RESET) {
2349 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE,
2350 QLCNIC_DEV_INITIALIZING);
2351 set_bit(__QLCNIC_START_FW, &adapter->state);
2352 QLCDB(adapter, DRV, "Restarting fw\n");
6df900e9 2353 qlcnic_idc_debug_info(adapter, 0);
af19b491
AKS		 2354 }
2355
f73dfc50
AKS		 2356 qlcnic_api_unlock(adapter);
2357
9f26f547 2358 if (!adapter->nic_ops->start_firmware(adapter)) {
af19b491
AKS		 2359 qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2360 return;
2361 }
af19b491
AKS		 2362 goto err_ret;
2363 }
2364
f73dfc50 2365 qlcnic_api_unlock(adapter);
aa5e18c0 2366
9f26f547 2367wait_npar:
af19b491 2368 dev_state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
f73dfc50 2369 QLCDB(adapter, HW, "Func waiting: Device state=%u\n", dev_state);
65b5b420 2370
af19b491 2371 switch (dev_state) {
a5e463d0
SC		 2372 case QLCNIC_DEV_QUISCENT:
2373 case QLCNIC_DEV_NEED_QUISCENT:
f73dfc50
AKS		 2374 case QLCNIC_DEV_NEED_RESET:
2375 qlcnic_schedule_work(adapter,
2376 qlcnic_fwinit_work, FW_POLL_DELAY);
2377 return;
af19b491
AKS		 2378 case QLCNIC_DEV_FAILED:
2379 break;
2380
2381 default:
9f26f547 2382 if (!adapter->nic_ops->start_firmware(adapter)) {
f73dfc50
AKS		 2383 qlcnic_schedule_work(adapter, qlcnic_attach_work, 0);
2384 return;
2385 }
af19b491
AKS		 2386 }
2387
2388err_ret:
f73dfc50
AKS		 2389 dev_err(&adapter->pdev->dev, "Fwinit work failed state=%u "
2390 "fw_wait_cnt=%u\n", dev_state, adapter->fw_wait_cnt);
34ce3626 2391 netif_device_attach(adapter->netdev);
af19b491
AKS		 2392 qlcnic_clr_all_drv_state(adapter);
2393}
2394
2395static void
2396qlcnic_detach_work(struct work_struct *work)
2397{
2398 struct qlcnic_adapter *adapter = container_of(work,
2399 struct qlcnic_adapter, fw_work.work);
2400 struct net_device *netdev = adapter->netdev;
2401 u32 status;
2402
2403 netif_device_detach(netdev);
2404
2405 qlcnic_down(adapter, netdev);
2406
ce668443 2407 rtnl_lock();
af19b491 2408 qlcnic_detach(adapter);
ce668443 2409 rtnl_unlock();
af19b491
AKS		 2410
2411 status = QLCRD32(adapter, QLCNIC_PEG_HALT_STATUS1);
2412
2413 if (status & QLCNIC_RCODE_FATAL_ERROR)
2414 goto err_ret;
2415
2416 if (adapter->temp == QLCNIC_TEMP_PANIC)
2417 goto err_ret;
2418
ade91f8e
AKS		 2419 if (qlcnic_set_drv_state(adapter, adapter->dev_state))
2420 goto err_ret;
af19b491
AKS		 2421
2422 adapter->fw_wait_cnt = 0;
2423
2424 qlcnic_schedule_work(adapter, qlcnic_fwinit_work, FW_POLL_DELAY);
2425
2426 return;
2427
2428err_ret:
65b5b420
AKS		 2429 dev_err(&adapter->pdev->dev, "detach failed; status=%d temp=%d\n",
2430 status, adapter->temp);
34ce3626 2431 netif_device_attach(netdev);
af19b491
AKS		 2432 qlcnic_clr_all_drv_state(adapter);
2433
2434}
2435
f73dfc50 2436/*Transit to RESET state from READY state only */
af19b491
AKS		 2437static void
2438qlcnic_dev_request_reset(struct qlcnic_adapter *adapter)
2439{
2440 u32 state;
2441
2442 if (qlcnic_api_lock(adapter))
2443 return;
2444
2445 state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2446
f73dfc50 2447 if (state == QLCNIC_DEV_READY) {
af19b491 2448 QLCWR32(adapter, QLCNIC_CRB_DEV_STATE, QLCNIC_DEV_NEED_RESET);
65b5b420 2449 QLCDB(adapter, DRV, "NEED_RESET state set\n");
6df900e9 2450 qlcnic_idc_debug_info(adapter, 0);
af19b491
AKS		 2451 }
2452
2453 qlcnic_api_unlock(adapter);
2454}
2455
9f26f547
AC		 2456/* Transit to NPAR READY state from NPAR NOT READY state */
2457static void
2458qlcnic_dev_set_npar_ready(struct qlcnic_adapter *adapter)
2459{
2460 u32 state;
2461
9f26f547
AC		 2462 if (qlcnic_api_lock(adapter))
2463 return;
2464
2465 state = QLCRD32(adapter, QLCNIC_CRB_DEV_NPAR_STATE);
2466
2467 if (state != QLCNIC_DEV_NPAR_RDY) {
2468 QLCWR32(adapter, QLCNIC_CRB_DEV_NPAR_STATE,
2469 QLCNIC_DEV_NPAR_RDY);
2470 QLCDB(adapter, DRV, "NPAR READY state set\n");
2471 }
2472
2473 qlcnic_api_unlock(adapter);
2474}
2475
af19b491
AKS		 2476static void
2477qlcnic_schedule_work(struct qlcnic_adapter *adapter,
2478 work_func_t func, int delay)
2479{
2480 INIT_DELAYED_WORK(&adapter->fw_work, func);
2481 schedule_delayed_work(&adapter->fw_work, round_jiffies_relative(delay));
2482}
2483
2484static void
2485qlcnic_cancel_fw_work(struct qlcnic_adapter *adapter)
2486{
2487 while (test_and_set_bit(__QLCNIC_RESETTING, &adapter->state))
2488 msleep(10);
2489
2490 cancel_delayed_work_sync(&adapter->fw_work);
2491}
2492
2493static void
2494qlcnic_attach_work(struct work_struct *work)
2495{
2496 struct qlcnic_adapter *adapter = container_of(work,
2497 struct qlcnic_adapter, fw_work.work);
2498 struct net_device *netdev = adapter->netdev;
2499 int err;
2500
2501 if (netif_running(netdev)) {
2502 err = qlcnic_attach(adapter);
2503 if (err)
2504 goto done;
2505
2506 err = qlcnic_up(adapter, netdev);
2507 if (err) {
2508 qlcnic_detach(adapter);
2509 goto done;
2510 }
2511
2512 qlcnic_config_indev_addr(netdev, NETDEV_UP);
2513 }
2514
af19b491 2515done:
34ce3626 2516 netif_device_attach(netdev);
af19b491
AKS		 2517 adapter->fw_fail_cnt = 0;
2518 clear_bit(__QLCNIC_RESETTING, &adapter->state);
1b95a839
AKS		 2519
2520 if (!qlcnic_clr_drv_state(adapter))
2521 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work,
2522 FW_POLL_DELAY);
af19b491
AKS		 2523}
2524
2525static int
2526qlcnic_check_health(struct qlcnic_adapter *adapter)
2527{
2528 u32 state = 0, heartbit;
2529 struct net_device *netdev = adapter->netdev;
2530
2531 if (qlcnic_check_temp(adapter))
2532 goto detach;
2533
2372a5f1 2534 if (adapter->need_fw_reset)
af19b491 2535 qlcnic_dev_request_reset(adapter);
af19b491
AKS		 2536
2537 state = QLCRD32(adapter, QLCNIC_CRB_DEV_STATE);
2538 if (state == QLCNIC_DEV_NEED_RESET || state == QLCNIC_DEV_NEED_QUISCENT)
2539 adapter->need_fw_reset = 1;
2540
2541 heartbit = QLCRD32(adapter, QLCNIC_PEG_ALIVE_COUNTER);
2542 if (heartbit != adapter->heartbit) {
2543 adapter->heartbit = heartbit;
2544 adapter->fw_fail_cnt = 0;
2545 if (adapter->need_fw_reset)
2546 goto detach;
2547 return 0;
2548 }
2549
2550 if (++adapter->fw_fail_cnt < FW_FAIL_THRESH)
2551 return 0;
2552
2553 qlcnic_dev_request_reset(adapter);
2554
2555 clear_bit(__QLCNIC_FW_ATTACHED, &adapter->state);
2556
2557 dev_info(&netdev->dev, "firmware hang detected\n");
2558
2559detach:
2560 adapter->dev_state = (state == QLCNIC_DEV_NEED_QUISCENT) ? state :
2561 QLCNIC_DEV_NEED_RESET;
2562
2563 if ((auto_fw_reset == AUTO_FW_RESET_ENABLED) &&
65b5b420
AKS		 2564 !test_and_set_bit(__QLCNIC_RESETTING, &adapter->state)) {
2565
af19b491 2566 qlcnic_schedule_work(adapter, qlcnic_detach_work, 0);
65b5b420
AKS		 2567 QLCDB(adapter, DRV, "fw recovery scheduled.\n");
2568 }
af19b491
AKS		 2569
2570 return 1;
2571}
2572
2573static void
2574qlcnic_fw_poll_work(struct work_struct *work)
2575{
2576 struct qlcnic_adapter *adapter = container_of(work,
2577 struct qlcnic_adapter, fw_work.work);
2578
2579 if (test_bit(__QLCNIC_RESETTING, &adapter->state))
2580 goto reschedule;
2581
2582
2583 if (qlcnic_check_health(adapter))
2584 return;
2585
2586reschedule:
2587 qlcnic_schedule_work(adapter, qlcnic_fw_poll_work, FW_POLL_DELAY);
2588}
2589
87eb743b
AC		 2590static int
2591qlcnicvf_start_firmware(struct qlcnic_adapter *adapter)
2592{
2593 int err;
2594
2595 err = qlcnic_can_start_firmware(adapter);
2596 if (err)
2597 return err;
2598
2599 qlcnic_check_options(adapter);
2600
2601 adapter->need_fw_reset = 0;
2602
2603 return err;
2604}
2605
2606static int
2607qlcnicvf_config_bridged_mode(struct qlcnic_adapter *adapter, u32 enable)
2608{
2609 return -EOPNOTSUPP;
2610}
2611
2612static int
2613qlcnicvf_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
2614{
2615 return -EOPNOTSUPP;
2616}
2617
2618static int
2619qlcnicvf_set_ilb_mode(struct qlcnic_adapter *adapter)
2620{
2621 return -EOPNOTSUPP;
2622}
2623
2624static void
2625qlcnicvf_clear_ilb_mode(struct qlcnic_adapter *adapter)
2626{
2627 return;
2628}
2629
af19b491
AKS		 2630static ssize_t
2631qlcnic_store_bridged_mode(struct device *dev,
2632 struct device_attribute *attr, const char *buf, size_t len)
2633{
2634 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2635 unsigned long new;
2636 int ret = -EINVAL;
2637
2638 if (!(adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG))
2639 goto err_out;
2640
2641 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2642 goto err_out;
2643
2644 if (strict_strtoul(buf, 2, &new))
2645 goto err_out;
2646
2e9d722d 2647 if (!adapter->nic_ops->config_bridged_mode(adapter, !!new))
af19b491
AKS		 2648 ret = len;
2649
2650err_out:
2651 return ret;
2652}
2653
2654static ssize_t
2655qlcnic_show_bridged_mode(struct device *dev,
2656 struct device_attribute *attr, char *buf)
2657{
2658 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2659 int bridged_mode = 0;
2660
2661 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2662 bridged_mode = !!(adapter->flags & QLCNIC_BRIDGE_ENABLED);
2663
2664 return sprintf(buf, "%d\n", bridged_mode);
2665}
2666
2667static struct device_attribute dev_attr_bridged_mode = {
2668 .attr = {.name = "bridged_mode", .mode = (S_IRUGO | S_IWUSR)},
2669 .show = qlcnic_show_bridged_mode,
2670 .store = qlcnic_store_bridged_mode,
2671};
2672
2673static ssize_t
2674qlcnic_store_diag_mode(struct device *dev,
2675 struct device_attribute *attr, const char *buf, size_t len)
2676{
2677 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2678 unsigned long new;
2679
2680 if (strict_strtoul(buf, 2, &new))
2681 return -EINVAL;
2682
2683 if (!!new != !!(adapter->flags & QLCNIC_DIAG_ENABLED))
2684 adapter->flags ^= QLCNIC_DIAG_ENABLED;
2685
2686 return len;
2687}
2688
2689static ssize_t
2690qlcnic_show_diag_mode(struct device *dev,
2691 struct device_attribute *attr, char *buf)
2692{
2693 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2694
2695 return sprintf(buf, "%d\n",
2696 !!(adapter->flags & QLCNIC_DIAG_ENABLED));
2697}
2698
2699static struct device_attribute dev_attr_diag_mode = {
2700 .attr = {.name = "diag_mode", .mode = (S_IRUGO | S_IWUSR)},
2701 .show = qlcnic_show_diag_mode,
2702 .store = qlcnic_store_diag_mode,
2703};
2704
2705static int
2706qlcnic_sysfs_validate_crb(struct qlcnic_adapter *adapter,
2707 loff_t offset, size_t size)
2708{
897e8c7c
DP		 2709 size_t crb_size = 4;
2710
af19b491
AKS		 2711 if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2712 return -EIO;
2713
897e8c7c
DP		 2714 if (offset < QLCNIC_PCI_CRBSPACE) {
2715 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM,
2716 QLCNIC_PCI_CAMQM_END))
2717 crb_size = 8;
2718 else
2719 return -EINVAL;
2720 }
af19b491 2721
897e8c7c
DP		 2722 if ((size != crb_size) || (offset & (crb_size-1)))
2723 return -EINVAL;
af19b491
AKS		 2724
2725 return 0;
2726}
2727
2728static ssize_t
2c3c8bea
CW		 2729qlcnic_sysfs_read_crb(struct file *filp, struct kobject *kobj,
2730 struct bin_attribute *attr,
af19b491
AKS		 2731 char *buf, loff_t offset, size_t size)
2732{
2733 struct device *dev = container_of(kobj, struct device, kobj);
2734 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2735 u32 data;
897e8c7c 2736 u64 qmdata;
af19b491
AKS		 2737 int ret;
2738
2739 ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2740 if (ret != 0)
2741 return ret;
2742
897e8c7c
DP		 2743 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2744 qlcnic_pci_camqm_read_2M(adapter, offset, &qmdata);
2745 memcpy(buf, &qmdata, size);
2746 } else {
2747 data = QLCRD32(adapter, offset);
2748 memcpy(buf, &data, size);
2749 }
af19b491
AKS		 2750 return size;
2751}
2752
2753static ssize_t
2c3c8bea
CW		 2754qlcnic_sysfs_write_crb(struct file *filp, struct kobject *kobj,
2755 struct bin_attribute *attr,
af19b491
AKS		 2756 char *buf, loff_t offset, size_t size)
2757{
2758 struct device *dev = container_of(kobj, struct device, kobj);
2759 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2760 u32 data;
897e8c7c 2761 u64 qmdata;
af19b491
AKS		 2762 int ret;
2763
2764 ret = qlcnic_sysfs_validate_crb(adapter, offset, size);
2765 if (ret != 0)
2766 return ret;
2767
897e8c7c
DP		 2768 if (ADDR_IN_RANGE(offset, QLCNIC_PCI_CAMQM, QLCNIC_PCI_CAMQM_END)) {
2769 memcpy(&qmdata, buf, size);
2770 qlcnic_pci_camqm_write_2M(adapter, offset, qmdata);
2771 } else {
2772 memcpy(&data, buf, size);
2773 QLCWR32(adapter, offset, data);
2774 }
af19b491
AKS		 2775 return size;
2776}
2777
2778static int
2779qlcnic_sysfs_validate_mem(struct qlcnic_adapter *adapter,
2780 loff_t offset, size_t size)
2781{
2782 if (!(adapter->flags & QLCNIC_DIAG_ENABLED))
2783 return -EIO;
2784
2785 if ((size != 8) || (offset & 0x7))
2786 return -EIO;
2787
2788 return 0;
2789}
2790
2791static ssize_t
2c3c8bea
CW		 2792qlcnic_sysfs_read_mem(struct file *filp, struct kobject *kobj,
2793 struct bin_attribute *attr,
af19b491
AKS		 2794 char *buf, loff_t offset, size_t size)
2795{
2796 struct device *dev = container_of(kobj, struct device, kobj);
2797 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2798 u64 data;
2799 int ret;
2800
2801 ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2802 if (ret != 0)
2803 return ret;
2804
2805 if (qlcnic_pci_mem_read_2M(adapter, offset, &data))
2806 return -EIO;
2807
2808 memcpy(buf, &data, size);
2809
2810 return size;
2811}
2812
2813static ssize_t
2c3c8bea
CW		 2814qlcnic_sysfs_write_mem(struct file *filp, struct kobject *kobj,
2815 struct bin_attribute *attr,
af19b491
AKS		 2816 char *buf, loff_t offset, size_t size)
2817{
2818 struct device *dev = container_of(kobj, struct device, kobj);
2819 struct qlcnic_adapter *adapter = dev_get_drvdata(dev);
2820 u64 data;
2821 int ret;
2822
2823 ret = qlcnic_sysfs_validate_mem(adapter, offset, size);
2824 if (ret != 0)
2825 return ret;
2826
2827 memcpy(&data, buf, size);
2828
2829 if (qlcnic_pci_mem_write_2M(adapter, offset, data))
2830 return -EIO;
2831
2832 return size;
2833}
2834
2835
2836static struct bin_attribute bin_attr_crb = {
2837 .attr = {.name = "crb", .mode = (S_IRUGO | S_IWUSR)},
2838 .size = 0,
2839 .read = qlcnic_sysfs_read_crb,
2840 .write = qlcnic_sysfs_write_crb,
2841};
2842
2843static struct bin_attribute bin_attr_mem = {
2844 .attr = {.name = "mem", .mode = (S_IRUGO | S_IWUSR)},
2845 .size = 0,
2846 .read = qlcnic_sysfs_read_mem,
2847 .write = qlcnic_sysfs_write_mem,
2848};
2849
2850static void
2851qlcnic_create_sysfs_entries(struct qlcnic_adapter *adapter)
2852{
2853 struct device *dev = &adapter->pdev->dev;
2854
2855 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2856 if (device_create_file(dev, &dev_attr_bridged_mode))
2857 dev_warn(dev,
2858 "failed to create bridged_mode sysfs entry\n");
2859}
2860
2861static void
2862qlcnic_remove_sysfs_entries(struct qlcnic_adapter *adapter)
2863{
2864 struct device *dev = &adapter->pdev->dev;
2865
2866 if (adapter->capabilities & QLCNIC_FW_CAPABILITY_BDG)
2867 device_remove_file(dev, &dev_attr_bridged_mode);
2868}
2869
2870static void
2871qlcnic_create_diag_entries(struct qlcnic_adapter *adapter)
2872{
2873 struct device *dev = &adapter->pdev->dev;
2874
2875 if (device_create_file(dev, &dev_attr_diag_mode))
2876 dev_info(dev, "failed to create diag_mode sysfs entry\n");
2877 if (device_create_bin_file(dev, &bin_attr_crb))
2878 dev_info(dev, "failed to create crb sysfs entry\n");
2879 if (device_create_bin_file(dev, &bin_attr_mem))
2880 dev_info(dev, "failed to create mem sysfs entry\n");
2881}
2882
2883
2884static void
2885qlcnic_remove_diag_entries(struct qlcnic_adapter *adapter)
2886{
2887 struct device *dev = &adapter->pdev->dev;
2888
2889 device_remove_file(dev, &dev_attr_diag_mode);
2890 device_remove_bin_file(dev, &bin_attr_crb);
2891 device_remove_bin_file(dev, &bin_attr_mem);
2892}
2893
2894#ifdef CONFIG_INET
2895
2896#define is_qlcnic_netdev(dev) (dev->netdev_ops == &qlcnic_netdev_ops)
2897
af19b491
AKS		 2898static void
2899qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
2900{
2901 struct in_device *indev;
2902 struct qlcnic_adapter *adapter = netdev_priv(dev);
2903
af19b491
AKS		 2904 indev = in_dev_get(dev);
2905 if (!indev)
2906 return;
2907
2908 for_ifa(indev) {
2909 switch (event) {
2910 case NETDEV_UP:
2911 qlcnic_config_ipaddr(adapter,
2912 ifa->ifa_address, QLCNIC_IP_UP);
2913 break;
2914 case NETDEV_DOWN:
2915 qlcnic_config_ipaddr(adapter,
2916 ifa->ifa_address, QLCNIC_IP_DOWN);
2917 break;
2918 default:
2919 break;
2920 }
2921 } endfor_ifa(indev);
2922
2923 in_dev_put(indev);
af19b491
AKS		 2924}
2925
2926static int qlcnic_netdev_event(struct notifier_block *this,
2927 unsigned long event, void *ptr)
2928{
2929 struct qlcnic_adapter *adapter;
2930 struct net_device *dev = (struct net_device *)ptr;
2931
2932recheck:
2933 if (dev == NULL)
2934 goto done;
2935
2936 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2937 dev = vlan_dev_real_dev(dev);
2938 goto recheck;
2939 }
2940
2941 if (!is_qlcnic_netdev(dev))
2942 goto done;
2943
2944 adapter = netdev_priv(dev);
2945
2946 if (!adapter)
2947 goto done;
2948
2949 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2950 goto done;
2951
2952 qlcnic_config_indev_addr(dev, event);
2953done:
2954 return NOTIFY_DONE;
2955}
2956
2957static int
2958qlcnic_inetaddr_event(struct notifier_block *this,
2959 unsigned long event, void *ptr)
2960{
2961 struct qlcnic_adapter *adapter;
2962 struct net_device *dev;
2963
2964 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2965
2966 dev = ifa->ifa_dev ? ifa->ifa_dev->dev : NULL;
2967
2968recheck:
2969 if (dev == NULL || !netif_running(dev))
2970 goto done;
2971
2972 if (dev->priv_flags & IFF_802_1Q_VLAN) {
2973 dev = vlan_dev_real_dev(dev);
2974 goto recheck;
2975 }
2976
2977 if (!is_qlcnic_netdev(dev))
2978 goto done;
2979
2980 adapter = netdev_priv(dev);
2981
251a84c9 2982 if (!adapter)
af19b491
AKS		 2983 goto done;
2984
2985 if (adapter->is_up != QLCNIC_ADAPTER_UP_MAGIC)
2986 goto done;
2987
2988 switch (event) {
2989 case NETDEV_UP:
2990 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_UP);
2991 break;
2992 case NETDEV_DOWN:
2993 qlcnic_config_ipaddr(adapter, ifa->ifa_address, QLCNIC_IP_DOWN);
2994 break;
2995 default:
2996 break;
2997 }
2998
2999done:
3000 return NOTIFY_DONE;
3001}
3002
3003static struct notifier_block qlcnic_netdev_cb = {
3004 .notifier_call = qlcnic_netdev_event,
3005};
3006
3007static struct notifier_block qlcnic_inetaddr_cb = {
3008 .notifier_call = qlcnic_inetaddr_event,
3009};
3010#else
3011static void
3012qlcnic_config_indev_addr(struct net_device *dev, unsigned long event)
3013{ }
3014#endif
3015
3016static struct pci_driver qlcnic_driver = {
3017 .name = qlcnic_driver_name,
3018 .id_table = qlcnic_pci_tbl,
3019 .probe = qlcnic_probe,
3020 .remove = __devexit_p(qlcnic_remove),
3021#ifdef CONFIG_PM
3022 .suspend = qlcnic_suspend,
3023 .resume = qlcnic_resume,
3024#endif
3025 .shutdown = qlcnic_shutdown
3026};
3027
3028static int __init qlcnic_init_module(void)
3029{
3030
3031 printk(KERN_INFO "%s\n", qlcnic_driver_string);
3032
3033#ifdef CONFIG_INET
3034 register_netdevice_notifier(&qlcnic_netdev_cb);
3035 register_inetaddr_notifier(&qlcnic_inetaddr_cb);
3036#endif
3037
3038
3039 return pci_register_driver(&qlcnic_driver);
3040}
3041
3042module_init(qlcnic_init_module);
3043
3044static void __exit qlcnic_exit_module(void)
3045{
3046
3047 pci_unregister_driver(&qlcnic_driver);
3048
3049#ifdef CONFIG_INET
3050 unregister_inetaddr_notifier(&qlcnic_inetaddr_cb);
3051 unregister_netdevice_notifier(&qlcnic_netdev_cb);
3052#endif
3053}
3054
3055module_exit(qlcnic_exit_module);
Clone of davem's net-next-2.6 tree