drivers/net/qla3xxx.c: Remove unnecessary casts of netdev_priv
[linux-2.6.git] / drivers / net / qla3xxx.c
1 /*
2  * QLogic QLA3xxx NIC HBA Driver
3  * Copyright (c)  2003-2006 QLogic Corporation
4  *
5  * See LICENSE.qla3xxx for copyright and licensing details.
6  */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/types.h>
13 #include <linux/module.h>
14 #include <linux/list.h>
15 #include <linux/pci.h>
16 #include <linux/dma-mapping.h>
17 #include <linux/sched.h>
18 #include <linux/slab.h>
19 #include <linux/dmapool.h>
20 #include <linux/mempool.h>
21 #include <linux/spinlock.h>
22 #include <linux/kthread.h>
23 #include <linux/interrupt.h>
24 #include <linux/errno.h>
25 #include <linux/ioport.h>
26 #include <linux/ip.h>
27 #include <linux/in.h>
28 #include <linux/if_arp.h>
29 #include <linux/if_ether.h>
30 #include <linux/netdevice.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/skbuff.h>
34 #include <linux/rtnetlink.h>
35 #include <linux/if_vlan.h>
36 #include <linux/delay.h>
37 #include <linux/mm.h>
38
39 #include "qla3xxx.h"
40
41 #define DRV_NAME        "qla3xxx"
42 #define DRV_STRING      "QLogic ISP3XXX Network Driver"
43 #define DRV_VERSION     "v2.03.00-k5"
44
45 static const char ql3xxx_driver_name[] = DRV_NAME;
46 static const char ql3xxx_driver_version[] = DRV_VERSION;
47
48 #define TIMED_OUT_MSG                                                   \
49 "Timed out waiting for management port to get free before issuing command\n"
50
51 MODULE_AUTHOR("QLogic Corporation");
52 MODULE_DESCRIPTION("QLogic ISP3XXX Network Driver " DRV_VERSION " ");
53 MODULE_LICENSE("GPL");
54 MODULE_VERSION(DRV_VERSION);
55
56 static const u32 default_msg
57     = NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
58     | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
59
60 static int debug = -1;          /* defaults above */
61 module_param(debug, int, 0);
62 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
63
64 static int msi;
65 module_param(msi, int, 0);
66 MODULE_PARM_DESC(msi, "Turn on Message Signaled Interrupts.");
67
68 static DEFINE_PCI_DEVICE_TABLE(ql3xxx_pci_tbl) = {
69         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QL3022_DEVICE_ID)},
70         {PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, QL3032_DEVICE_ID)},
71         /* required last entry */
72         {0,}
73 };
74
75 MODULE_DEVICE_TABLE(pci, ql3xxx_pci_tbl);
76
77 /*
78  *  These are the known PHY's which are used
79  */
80 enum PHY_DEVICE_TYPE {
81    PHY_TYPE_UNKNOWN   = 0,
82    PHY_VITESSE_VSC8211,
83    PHY_AGERE_ET1011C,
84    MAX_PHY_DEV_TYPES
85 };
86
87 struct PHY_DEVICE_INFO {
88         const enum PHY_DEVICE_TYPE      phyDevice;
89         const u32               phyIdOUI;
90         const u16               phyIdModel;
91         const char              *name;
92 };
93
94 static const struct PHY_DEVICE_INFO PHY_DEVICES[] = {
95         {PHY_TYPE_UNKNOWN,    0x000000, 0x0, "PHY_TYPE_UNKNOWN"},
96         {PHY_VITESSE_VSC8211, 0x0003f1, 0xb, "PHY_VITESSE_VSC8211"},
97         {PHY_AGERE_ET1011C,   0x00a0bc, 0x1, "PHY_AGERE_ET1011C"},
98 };
99
100
101 /*
102  * Caller must take hw_lock.
103  */
104 static int ql_sem_spinlock(struct ql3_adapter *qdev,
105                             u32 sem_mask, u32 sem_bits)
106 {
107         struct ql3xxx_port_registers __iomem *port_regs =
108                 qdev->mem_map_registers;
109         u32 value;
110         unsigned int seconds = 3;
111
112         do {
113                 writel((sem_mask | sem_bits),
114                        &port_regs->CommonRegs.semaphoreReg);
115                 value = readl(&port_regs->CommonRegs.semaphoreReg);
116                 if ((value & (sem_mask >> 16)) == sem_bits)
117                         return 0;
118                 ssleep(1);
119         } while (--seconds);
120         return -1;
121 }
122
123 static void ql_sem_unlock(struct ql3_adapter *qdev, u32 sem_mask)
124 {
125         struct ql3xxx_port_registers __iomem *port_regs =
126                 qdev->mem_map_registers;
127         writel(sem_mask, &port_regs->CommonRegs.semaphoreReg);
128         readl(&port_regs->CommonRegs.semaphoreReg);
129 }
130
131 static int ql_sem_lock(struct ql3_adapter *qdev, u32 sem_mask, u32 sem_bits)
132 {
133         struct ql3xxx_port_registers __iomem *port_regs =
134                 qdev->mem_map_registers;
135         u32 value;
136
137         writel((sem_mask | sem_bits), &port_regs->CommonRegs.semaphoreReg);
138         value = readl(&port_regs->CommonRegs.semaphoreReg);
139         return ((value & (sem_mask >> 16)) == sem_bits);
140 }
141
142 /*
143  * Caller holds hw_lock.
144  */
145 static int ql_wait_for_drvr_lock(struct ql3_adapter *qdev)
146 {
147         int i = 0;
148
149         while (i < 10) {
150                 if (i)
151                         ssleep(1);
152
153                 if (ql_sem_lock(qdev,
154                                 QL_DRVR_SEM_MASK,
155                                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index)
156                                  * 2) << 1)) {
157                         netdev_printk(KERN_DEBUG, qdev->ndev,
158                                       "driver lock acquired\n");
159                         return 1;
160                 }
161         }
162
163         netdev_err(qdev->ndev, "Timed out waiting for driver lock...\n");
164         return 0;
165 }
166
167 static void ql_set_register_page(struct ql3_adapter *qdev, u32 page)
168 {
169         struct ql3xxx_port_registers __iomem *port_regs =
170                 qdev->mem_map_registers;
171
172         writel(((ISP_CONTROL_NP_MASK << 16) | page),
173                         &port_regs->CommonRegs.ispControlStatus);
174         readl(&port_regs->CommonRegs.ispControlStatus);
175         qdev->current_page = page;
176 }
177
178 static u32 ql_read_common_reg_l(struct ql3_adapter *qdev, u32 __iomem *reg)
179 {
180         u32 value;
181         unsigned long hw_flags;
182
183         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
184         value = readl(reg);
185         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
186
187         return value;
188 }
189
190 static u32 ql_read_common_reg(struct ql3_adapter *qdev, u32 __iomem *reg)
191 {
192         return readl(reg);
193 }
194
195 static u32 ql_read_page0_reg_l(struct ql3_adapter *qdev, u32 __iomem *reg)
196 {
197         u32 value;
198         unsigned long hw_flags;
199
200         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
201
202         if (qdev->current_page != 0)
203                 ql_set_register_page(qdev, 0);
204         value = readl(reg);
205
206         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
207         return value;
208 }
209
210 static u32 ql_read_page0_reg(struct ql3_adapter *qdev, u32 __iomem *reg)
211 {
212         if (qdev->current_page != 0)
213                 ql_set_register_page(qdev, 0);
214         return readl(reg);
215 }
216
217 static void ql_write_common_reg_l(struct ql3_adapter *qdev,
218                                 u32 __iomem *reg, u32 value)
219 {
220         unsigned long hw_flags;
221
222         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
223         writel(value, reg);
224         readl(reg);
225         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
226 }
227
228 static void ql_write_common_reg(struct ql3_adapter *qdev,
229                                 u32 __iomem *reg, u32 value)
230 {
231         writel(value, reg);
232         readl(reg);
233 }
234
235 static void ql_write_nvram_reg(struct ql3_adapter *qdev,
236                                 u32 __iomem *reg, u32 value)
237 {
238         writel(value, reg);
239         readl(reg);
240         udelay(1);
241 }
242
243 static void ql_write_page0_reg(struct ql3_adapter *qdev,
244                                u32 __iomem *reg, u32 value)
245 {
246         if (qdev->current_page != 0)
247                 ql_set_register_page(qdev, 0);
248         writel(value, reg);
249         readl(reg);
250 }
251
252 /*
253  * Caller holds hw_lock. Only called during init.
254  */
255 static void ql_write_page1_reg(struct ql3_adapter *qdev,
256                                u32 __iomem *reg, u32 value)
257 {
258         if (qdev->current_page != 1)
259                 ql_set_register_page(qdev, 1);
260         writel(value, reg);
261         readl(reg);
262 }
263
264 /*
265  * Caller holds hw_lock. Only called during init.
266  */
267 static void ql_write_page2_reg(struct ql3_adapter *qdev,
268                                u32 __iomem *reg, u32 value)
269 {
270         if (qdev->current_page != 2)
271                 ql_set_register_page(qdev, 2);
272         writel(value, reg);
273         readl(reg);
274 }
275
276 static void ql_disable_interrupts(struct ql3_adapter *qdev)
277 {
278         struct ql3xxx_port_registers __iomem *port_regs =
279                 qdev->mem_map_registers;
280
281         ql_write_common_reg_l(qdev, &port_regs->CommonRegs.ispInterruptMaskReg,
282                             (ISP_IMR_ENABLE_INT << 16));
283
284 }
285
286 static void ql_enable_interrupts(struct ql3_adapter *qdev)
287 {
288         struct ql3xxx_port_registers __iomem *port_regs =
289                 qdev->mem_map_registers;
290
291         ql_write_common_reg_l(qdev, &port_regs->CommonRegs.ispInterruptMaskReg,
292                             ((0xff << 16) | ISP_IMR_ENABLE_INT));
293
294 }
295
296 static void ql_release_to_lrg_buf_free_list(struct ql3_adapter *qdev,
297                                             struct ql_rcv_buf_cb *lrg_buf_cb)
298 {
299         dma_addr_t map;
300         int err;
301         lrg_buf_cb->next = NULL;
302
303         if (qdev->lrg_buf_free_tail == NULL) {  /* The list is empty  */
304                 qdev->lrg_buf_free_head = qdev->lrg_buf_free_tail = lrg_buf_cb;
305         } else {
306                 qdev->lrg_buf_free_tail->next = lrg_buf_cb;
307                 qdev->lrg_buf_free_tail = lrg_buf_cb;
308         }
309
310         if (!lrg_buf_cb->skb) {
311                 lrg_buf_cb->skb = netdev_alloc_skb(qdev->ndev,
312                                                    qdev->lrg_buffer_len);
313                 if (unlikely(!lrg_buf_cb->skb)) {
314                         netdev_err(qdev->ndev, "failed netdev_alloc_skb()\n");
315                         qdev->lrg_buf_skb_check++;
316                 } else {
317                         /*
318                          * We save some space to copy the ethhdr from first
319                          * buffer
320                          */
321                         skb_reserve(lrg_buf_cb->skb, QL_HEADER_SPACE);
322                         map = pci_map_single(qdev->pdev,
323                                              lrg_buf_cb->skb->data,
324                                              qdev->lrg_buffer_len -
325                                              QL_HEADER_SPACE,
326                                              PCI_DMA_FROMDEVICE);
327                         err = pci_dma_mapping_error(qdev->pdev, map);
328                         if (err) {
329                                 netdev_err(qdev->ndev,
330                                            "PCI mapping failed with error: %d\n",
331                                            err);
332                                 dev_kfree_skb(lrg_buf_cb->skb);
333                                 lrg_buf_cb->skb = NULL;
334
335                                 qdev->lrg_buf_skb_check++;
336                                 return;
337                         }
338
339                         lrg_buf_cb->buf_phy_addr_low =
340                             cpu_to_le32(LS_64BITS(map));
341                         lrg_buf_cb->buf_phy_addr_high =
342                             cpu_to_le32(MS_64BITS(map));
343                         dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
344                         dma_unmap_len_set(lrg_buf_cb, maplen,
345                                           qdev->lrg_buffer_len -
346                                           QL_HEADER_SPACE);
347                 }
348         }
349
350         qdev->lrg_buf_free_count++;
351 }
352
353 static struct ql_rcv_buf_cb *ql_get_from_lrg_buf_free_list(struct ql3_adapter
354                                                            *qdev)
355 {
356         struct ql_rcv_buf_cb *lrg_buf_cb = qdev->lrg_buf_free_head;
357
358         if (lrg_buf_cb != NULL) {
359                 qdev->lrg_buf_free_head = lrg_buf_cb->next;
360                 if (qdev->lrg_buf_free_head == NULL)
361                         qdev->lrg_buf_free_tail = NULL;
362                 qdev->lrg_buf_free_count--;
363         }
364
365         return lrg_buf_cb;
366 }
367
368 static u32 addrBits = EEPROM_NO_ADDR_BITS;
369 static u32 dataBits = EEPROM_NO_DATA_BITS;
370
371 static void fm93c56a_deselect(struct ql3_adapter *qdev);
372 static void eeprom_readword(struct ql3_adapter *qdev, u32 eepromAddr,
373                             unsigned short *value);
374
375 /*
376  * Caller holds hw_lock.
377  */
378 static void fm93c56a_select(struct ql3_adapter *qdev)
379 {
380         struct ql3xxx_port_registers __iomem *port_regs =
381                         qdev->mem_map_registers;
382         u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
383
384         qdev->eeprom_cmd_data = AUBURN_EEPROM_CS_1;
385         ql_write_nvram_reg(qdev, spir, ISP_NVRAM_MASK | qdev->eeprom_cmd_data);
386         ql_write_nvram_reg(qdev, spir,
387                            ((ISP_NVRAM_MASK << 16) | qdev->eeprom_cmd_data));
388 }
389
390 /*
391  * Caller holds hw_lock.
392  */
393 static void fm93c56a_cmd(struct ql3_adapter *qdev, u32 cmd, u32 eepromAddr)
394 {
395         int i;
396         u32 mask;
397         u32 dataBit;
398         u32 previousBit;
399         struct ql3xxx_port_registers __iomem *port_regs =
400                         qdev->mem_map_registers;
401         u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
402
403         /* Clock in a zero, then do the start bit */
404         ql_write_nvram_reg(qdev, spir,
405                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
406                             AUBURN_EEPROM_DO_1));
407         ql_write_nvram_reg(qdev, spir,
408                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
409                             AUBURN_EEPROM_DO_1 | AUBURN_EEPROM_CLK_RISE));
410         ql_write_nvram_reg(qdev, spir,
411                            (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
412                             AUBURN_EEPROM_DO_1 | AUBURN_EEPROM_CLK_FALL));
413
414         mask = 1 << (FM93C56A_CMD_BITS - 1);
415         /* Force the previous data bit to be different */
416         previousBit = 0xffff;
417         for (i = 0; i < FM93C56A_CMD_BITS; i++) {
418                 dataBit = (cmd & mask)
419                         ? AUBURN_EEPROM_DO_1
420                         : AUBURN_EEPROM_DO_0;
421                 if (previousBit != dataBit) {
422                         /* If the bit changed, change the DO state to match */
423                         ql_write_nvram_reg(qdev, spir,
424                                            (ISP_NVRAM_MASK |
425                                             qdev->eeprom_cmd_data | dataBit));
426                         previousBit = dataBit;
427                 }
428                 ql_write_nvram_reg(qdev, spir,
429                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
430                                     dataBit | AUBURN_EEPROM_CLK_RISE));
431                 ql_write_nvram_reg(qdev, spir,
432                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
433                                     dataBit | AUBURN_EEPROM_CLK_FALL));
434                 cmd = cmd << 1;
435         }
436
437         mask = 1 << (addrBits - 1);
438         /* Force the previous data bit to be different */
439         previousBit = 0xffff;
440         for (i = 0; i < addrBits; i++) {
441                 dataBit = (eepromAddr & mask) ? AUBURN_EEPROM_DO_1
442                         : AUBURN_EEPROM_DO_0;
443                 if (previousBit != dataBit) {
444                         /*
445                          * If the bit changed, then change the DO state to
446                          * match
447                          */
448                         ql_write_nvram_reg(qdev, spir,
449                                            (ISP_NVRAM_MASK |
450                                             qdev->eeprom_cmd_data | dataBit));
451                         previousBit = dataBit;
452                 }
453                 ql_write_nvram_reg(qdev, spir,
454                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
455                                     dataBit | AUBURN_EEPROM_CLK_RISE));
456                 ql_write_nvram_reg(qdev, spir,
457                                    (ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
458                                     dataBit | AUBURN_EEPROM_CLK_FALL));
459                 eepromAddr = eepromAddr << 1;
460         }
461 }
462
463 /*
464  * Caller holds hw_lock.
465  */
466 static void fm93c56a_deselect(struct ql3_adapter *qdev)
467 {
468         struct ql3xxx_port_registers __iomem *port_regs =
469                         qdev->mem_map_registers;
470         u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
471
472         qdev->eeprom_cmd_data = AUBURN_EEPROM_CS_0;
473         ql_write_nvram_reg(qdev, spir, ISP_NVRAM_MASK | qdev->eeprom_cmd_data);
474 }
475
476 /*
477  * Caller holds hw_lock.
478  */
479 static void fm93c56a_datain(struct ql3_adapter *qdev, unsigned short *value)
480 {
481         int i;
482         u32 data = 0;
483         u32 dataBit;
484         struct ql3xxx_port_registers __iomem *port_regs =
485                         qdev->mem_map_registers;
486         u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
487
488         /* Read the data bits */
489         /* The first bit is a dummy.  Clock right over it. */
490         for (i = 0; i < dataBits; i++) {
491                 ql_write_nvram_reg(qdev, spir,
492                                    ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
493                                    AUBURN_EEPROM_CLK_RISE);
494                 ql_write_nvram_reg(qdev, spir,
495                                    ISP_NVRAM_MASK | qdev->eeprom_cmd_data |
496                                    AUBURN_EEPROM_CLK_FALL);
497                 dataBit = (ql_read_common_reg(qdev, spir) &
498                            AUBURN_EEPROM_DI_1) ? 1 : 0;
499                 data = (data << 1) | dataBit;
500         }
501         *value = (u16)data;
502 }
503
504 /*
505  * Caller holds hw_lock.
506  */
507 static void eeprom_readword(struct ql3_adapter *qdev,
508                             u32 eepromAddr, unsigned short *value)
509 {
510         fm93c56a_select(qdev);
511         fm93c56a_cmd(qdev, (int)FM93C56A_READ, eepromAddr);
512         fm93c56a_datain(qdev, value);
513         fm93c56a_deselect(qdev);
514 }
515
516 static void ql_set_mac_addr(struct net_device *ndev, u16 *addr)
517 {
518         __le16 *p = (__le16 *)ndev->dev_addr;
519         p[0] = cpu_to_le16(addr[0]);
520         p[1] = cpu_to_le16(addr[1]);
521         p[2] = cpu_to_le16(addr[2]);
522 }
523
524 static int ql_get_nvram_params(struct ql3_adapter *qdev)
525 {
526         u16 *pEEPROMData;
527         u16 checksum = 0;
528         u32 index;
529         unsigned long hw_flags;
530
531         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
532
533         pEEPROMData = (u16 *)&qdev->nvram_data;
534         qdev->eeprom_cmd_data = 0;
535         if (ql_sem_spinlock(qdev, QL_NVRAM_SEM_MASK,
536                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
537                          2) << 10)) {
538                 pr_err("%s: Failed ql_sem_spinlock()\n", __func__);
539                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
540                 return -1;
541         }
542
543         for (index = 0; index < EEPROM_SIZE; index++) {
544                 eeprom_readword(qdev, index, pEEPROMData);
545                 checksum += *pEEPROMData;
546                 pEEPROMData++;
547         }
548         ql_sem_unlock(qdev, QL_NVRAM_SEM_MASK);
549
550         if (checksum != 0) {
551                 netdev_err(qdev->ndev, "checksum should be zero, is %x!!\n",
552                            checksum);
553                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
554                 return -1;
555         }
556
557         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
558         return checksum;
559 }
560
561 static const u32 PHYAddr[2] = {
562         PORT0_PHY_ADDRESS, PORT1_PHY_ADDRESS
563 };
564
565 static int ql_wait_for_mii_ready(struct ql3_adapter *qdev)
566 {
567         struct ql3xxx_port_registers __iomem *port_regs =
568                         qdev->mem_map_registers;
569         u32 temp;
570         int count = 1000;
571
572         while (count) {
573                 temp = ql_read_page0_reg(qdev, &port_regs->macMIIStatusReg);
574                 if (!(temp & MAC_MII_STATUS_BSY))
575                         return 0;
576                 udelay(10);
577                 count--;
578         }
579         return -1;
580 }
581
582 static void ql_mii_enable_scan_mode(struct ql3_adapter *qdev)
583 {
584         struct ql3xxx_port_registers __iomem *port_regs =
585                         qdev->mem_map_registers;
586         u32 scanControl;
587
588         if (qdev->numPorts > 1) {
589                 /* Auto scan will cycle through multiple ports */
590                 scanControl = MAC_MII_CONTROL_AS | MAC_MII_CONTROL_SC;
591         } else {
592                 scanControl = MAC_MII_CONTROL_SC;
593         }
594
595         /*
596          * Scan register 1 of PHY/PETBI,
597          * Set up to scan both devices
598          * The autoscan starts from the first register, completes
599          * the last one before rolling over to the first
600          */
601         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
602                            PHYAddr[0] | MII_SCAN_REGISTER);
603
604         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
605                            (scanControl) |
606                            ((MAC_MII_CONTROL_SC | MAC_MII_CONTROL_AS) << 16));
607 }
608
609 static u8 ql_mii_disable_scan_mode(struct ql3_adapter *qdev)
610 {
611         u8 ret;
612         struct ql3xxx_port_registers __iomem *port_regs =
613                                         qdev->mem_map_registers;
614
615         /* See if scan mode is enabled before we turn it off */
616         if (ql_read_page0_reg(qdev, &port_regs->macMIIMgmtControlReg) &
617             (MAC_MII_CONTROL_AS | MAC_MII_CONTROL_SC)) {
618                 /* Scan is enabled */
619                 ret = 1;
620         } else {
621                 /* Scan is disabled */
622                 ret = 0;
623         }
624
625         /*
626          * When disabling scan mode you must first change the MII register
627          * address
628          */
629         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
630                            PHYAddr[0] | MII_SCAN_REGISTER);
631
632         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
633                            ((MAC_MII_CONTROL_SC | MAC_MII_CONTROL_AS |
634                              MAC_MII_CONTROL_RC) << 16));
635
636         return ret;
637 }
638
639 static int ql_mii_write_reg_ex(struct ql3_adapter *qdev,
640                                u16 regAddr, u16 value, u32 phyAddr)
641 {
642         struct ql3xxx_port_registers __iomem *port_regs =
643                         qdev->mem_map_registers;
644         u8 scanWasEnabled;
645
646         scanWasEnabled = ql_mii_disable_scan_mode(qdev);
647
648         if (ql_wait_for_mii_ready(qdev)) {
649                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
650                 return -1;
651         }
652
653         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
654                            phyAddr | regAddr);
655
656         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtDataReg, value);
657
658         /* Wait for write to complete 9/10/04 SJP */
659         if (ql_wait_for_mii_ready(qdev)) {
660                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
661                 return -1;
662         }
663
664         if (scanWasEnabled)
665                 ql_mii_enable_scan_mode(qdev);
666
667         return 0;
668 }
669
670 static int ql_mii_read_reg_ex(struct ql3_adapter *qdev, u16 regAddr,
671                               u16 *value, u32 phyAddr)
672 {
673         struct ql3xxx_port_registers __iomem *port_regs =
674                         qdev->mem_map_registers;
675         u8 scanWasEnabled;
676         u32 temp;
677
678         scanWasEnabled = ql_mii_disable_scan_mode(qdev);
679
680         if (ql_wait_for_mii_ready(qdev)) {
681                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
682                 return -1;
683         }
684
685         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
686                            phyAddr | regAddr);
687
688         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
689                            (MAC_MII_CONTROL_RC << 16));
690
691         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
692                            (MAC_MII_CONTROL_RC << 16) | MAC_MII_CONTROL_RC);
693
694         /* Wait for the read to complete */
695         if (ql_wait_for_mii_ready(qdev)) {
696                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
697                 return -1;
698         }
699
700         temp = ql_read_page0_reg(qdev, &port_regs->macMIIMgmtDataReg);
701         *value = (u16) temp;
702
703         if (scanWasEnabled)
704                 ql_mii_enable_scan_mode(qdev);
705
706         return 0;
707 }
708
709 static int ql_mii_write_reg(struct ql3_adapter *qdev, u16 regAddr, u16 value)
710 {
711         struct ql3xxx_port_registers __iomem *port_regs =
712                         qdev->mem_map_registers;
713
714         ql_mii_disable_scan_mode(qdev);
715
716         if (ql_wait_for_mii_ready(qdev)) {
717                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
718                 return -1;
719         }
720
721         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
722                            qdev->PHYAddr | regAddr);
723
724         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtDataReg, value);
725
726         /* Wait for write to complete. */
727         if (ql_wait_for_mii_ready(qdev)) {
728                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
729                 return -1;
730         }
731
732         ql_mii_enable_scan_mode(qdev);
733
734         return 0;
735 }
736
737 static int ql_mii_read_reg(struct ql3_adapter *qdev, u16 regAddr, u16 *value)
738 {
739         u32 temp;
740         struct ql3xxx_port_registers __iomem *port_regs =
741                         qdev->mem_map_registers;
742
743         ql_mii_disable_scan_mode(qdev);
744
745         if (ql_wait_for_mii_ready(qdev)) {
746                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
747                 return -1;
748         }
749
750         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtAddrReg,
751                            qdev->PHYAddr | regAddr);
752
753         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
754                            (MAC_MII_CONTROL_RC << 16));
755
756         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
757                            (MAC_MII_CONTROL_RC << 16) | MAC_MII_CONTROL_RC);
758
759         /* Wait for the read to complete */
760         if (ql_wait_for_mii_ready(qdev)) {
761                 netif_warn(qdev, link, qdev->ndev, TIMED_OUT_MSG);
762                 return -1;
763         }
764
765         temp = ql_read_page0_reg(qdev, &port_regs->macMIIMgmtDataReg);
766         *value = (u16) temp;
767
768         ql_mii_enable_scan_mode(qdev);
769
770         return 0;
771 }
772
773 static void ql_petbi_reset(struct ql3_adapter *qdev)
774 {
775         ql_mii_write_reg(qdev, PETBI_CONTROL_REG, PETBI_CTRL_SOFT_RESET);
776 }
777
778 static void ql_petbi_start_neg(struct ql3_adapter *qdev)
779 {
780         u16 reg;
781
782         /* Enable Auto-negotiation sense */
783         ql_mii_read_reg(qdev, PETBI_TBI_CTRL, &reg);
784         reg |= PETBI_TBI_AUTO_SENSE;
785         ql_mii_write_reg(qdev, PETBI_TBI_CTRL, reg);
786
787         ql_mii_write_reg(qdev, PETBI_NEG_ADVER,
788                          PETBI_NEG_PAUSE | PETBI_NEG_DUPLEX);
789
790         ql_mii_write_reg(qdev, PETBI_CONTROL_REG,
791                          PETBI_CTRL_AUTO_NEG | PETBI_CTRL_RESTART_NEG |
792                          PETBI_CTRL_FULL_DUPLEX | PETBI_CTRL_SPEED_1000);
793
794 }
795
796 static void ql_petbi_reset_ex(struct ql3_adapter *qdev)
797 {
798         ql_mii_write_reg_ex(qdev, PETBI_CONTROL_REG, PETBI_CTRL_SOFT_RESET,
799                             PHYAddr[qdev->mac_index]);
800 }
801
802 static void ql_petbi_start_neg_ex(struct ql3_adapter *qdev)
803 {
804         u16 reg;
805
806         /* Enable Auto-negotiation sense */
807         ql_mii_read_reg_ex(qdev, PETBI_TBI_CTRL, &reg,
808                            PHYAddr[qdev->mac_index]);
809         reg |= PETBI_TBI_AUTO_SENSE;
810         ql_mii_write_reg_ex(qdev, PETBI_TBI_CTRL, reg,
811                             PHYAddr[qdev->mac_index]);
812
813         ql_mii_write_reg_ex(qdev, PETBI_NEG_ADVER,
814                             PETBI_NEG_PAUSE | PETBI_NEG_DUPLEX,
815                             PHYAddr[qdev->mac_index]);
816
817         ql_mii_write_reg_ex(qdev, PETBI_CONTROL_REG,
818                             PETBI_CTRL_AUTO_NEG | PETBI_CTRL_RESTART_NEG |
819                             PETBI_CTRL_FULL_DUPLEX | PETBI_CTRL_SPEED_1000,
820                             PHYAddr[qdev->mac_index]);
821 }
822
823 static void ql_petbi_init(struct ql3_adapter *qdev)
824 {
825         ql_petbi_reset(qdev);
826         ql_petbi_start_neg(qdev);
827 }
828
829 static void ql_petbi_init_ex(struct ql3_adapter *qdev)
830 {
831         ql_petbi_reset_ex(qdev);
832         ql_petbi_start_neg_ex(qdev);
833 }
834
835 static int ql_is_petbi_neg_pause(struct ql3_adapter *qdev)
836 {
837         u16 reg;
838
839         if (ql_mii_read_reg(qdev, PETBI_NEG_PARTNER, &reg) < 0)
840                 return 0;
841
842         return (reg & PETBI_NEG_PAUSE_MASK) == PETBI_NEG_PAUSE;
843 }
844
845 static void phyAgereSpecificInit(struct ql3_adapter *qdev, u32 miiAddr)
846 {
847         netdev_info(qdev->ndev, "enabling Agere specific PHY\n");
848         /* power down device bit 11 = 1 */
849         ql_mii_write_reg_ex(qdev, 0x00, 0x1940, miiAddr);
850         /* enable diagnostic mode bit 2 = 1 */
851         ql_mii_write_reg_ex(qdev, 0x12, 0x840e, miiAddr);
852         /* 1000MB amplitude adjust (see Agere errata) */
853         ql_mii_write_reg_ex(qdev, 0x10, 0x8805, miiAddr);
854         /* 1000MB amplitude adjust (see Agere errata) */
855         ql_mii_write_reg_ex(qdev, 0x11, 0xf03e, miiAddr);
856         /* 100MB amplitude adjust (see Agere errata) */
857         ql_mii_write_reg_ex(qdev, 0x10, 0x8806, miiAddr);
858         /* 100MB amplitude adjust (see Agere errata) */
859         ql_mii_write_reg_ex(qdev, 0x11, 0x003e, miiAddr);
860         /* 10MB amplitude adjust (see Agere errata) */
861         ql_mii_write_reg_ex(qdev, 0x10, 0x8807, miiAddr);
862         /* 10MB amplitude adjust (see Agere errata) */
863         ql_mii_write_reg_ex(qdev, 0x11, 0x1f00, miiAddr);
864         /* point to hidden reg 0x2806 */
865         ql_mii_write_reg_ex(qdev, 0x10, 0x2806, miiAddr);
866         /* Write new PHYAD w/bit 5 set */
867         ql_mii_write_reg_ex(qdev, 0x11,
868                             0x0020 | (PHYAddr[qdev->mac_index] >> 8), miiAddr);
869         /*
870          * Disable diagnostic mode bit 2 = 0
871          * Power up device bit 11 = 0
872          * Link up (on) and activity (blink)
873          */
874         ql_mii_write_reg(qdev, 0x12, 0x840a);
875         ql_mii_write_reg(qdev, 0x00, 0x1140);
876         ql_mii_write_reg(qdev, 0x1c, 0xfaf0);
877 }
878
879 static enum PHY_DEVICE_TYPE getPhyType(struct ql3_adapter *qdev,
880                                        u16 phyIdReg0, u16 phyIdReg1)
881 {
882         enum PHY_DEVICE_TYPE result = PHY_TYPE_UNKNOWN;
883         u32   oui;
884         u16   model;
885         int i;
886
887         if (phyIdReg0 == 0xffff)
888                 return result;
889
890         if (phyIdReg1 == 0xffff)
891                 return result;
892
893         /* oui is split between two registers */
894         oui = (phyIdReg0 << 6) | ((phyIdReg1 & PHY_OUI_1_MASK) >> 10);
895
896         model = (phyIdReg1 & PHY_MODEL_MASK) >> 4;
897
898         /* Scan table for this PHY */
899         for (i = 0; i < MAX_PHY_DEV_TYPES; i++) {
900                 if ((oui == PHY_DEVICES[i].phyIdOUI) &&
901                     (model == PHY_DEVICES[i].phyIdModel)) {
902                         netdev_info(qdev->ndev, "Phy: %s\n",
903                                     PHY_DEVICES[i].name);
904                         result = PHY_DEVICES[i].phyDevice;
905                         break;
906                 }
907         }
908
909         return result;
910 }
911
912 static int ql_phy_get_speed(struct ql3_adapter *qdev)
913 {
914         u16 reg;
915
916         switch (qdev->phyType) {
917         case PHY_AGERE_ET1011C: {
918                 if (ql_mii_read_reg(qdev, 0x1A, &reg) < 0)
919                         return 0;
920
921                 reg = (reg >> 8) & 3;
922                 break;
923         }
924         default:
925                 if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
926                         return 0;
927
928                 reg = (((reg & 0x18) >> 3) & 3);
929         }
930
931         switch (reg) {
932         case 2:
933                 return SPEED_1000;
934         case 1:
935                 return SPEED_100;
936         case 0:
937                 return SPEED_10;
938         default:
939                 return -1;
940         }
941 }
942
943 static int ql_is_full_dup(struct ql3_adapter *qdev)
944 {
945         u16 reg;
946
947         switch (qdev->phyType) {
948         case PHY_AGERE_ET1011C: {
949                 if (ql_mii_read_reg(qdev, 0x1A, &reg))
950                         return 0;
951
952                 return ((reg & 0x0080) && (reg & 0x1000)) != 0;
953         }
954         case PHY_VITESSE_VSC8211:
955         default: {
956                 if (ql_mii_read_reg(qdev, AUX_CONTROL_STATUS, &reg) < 0)
957                         return 0;
958                 return (reg & PHY_AUX_DUPLEX_STAT) != 0;
959         }
960         }
961 }
962
963 static int ql_is_phy_neg_pause(struct ql3_adapter *qdev)
964 {
965         u16 reg;
966
967         if (ql_mii_read_reg(qdev, PHY_NEG_PARTNER, &reg) < 0)
968                 return 0;
969
970         return (reg & PHY_NEG_PAUSE) != 0;
971 }
972
973 static int PHY_Setup(struct ql3_adapter *qdev)
974 {
975         u16   reg1;
976         u16   reg2;
977         bool  agereAddrChangeNeeded = false;
978         u32 miiAddr = 0;
979         int err;
980
981         /*  Determine the PHY we are using by reading the ID's */
982         err = ql_mii_read_reg(qdev, PHY_ID_0_REG, &reg1);
983         if (err != 0) {
984                 netdev_err(qdev->ndev, "Could not read from reg PHY_ID_0_REG\n");
985                 return err;
986         }
987
988         err = ql_mii_read_reg(qdev, PHY_ID_1_REG, &reg2);
989         if (err != 0) {
990                 netdev_err(qdev->ndev, "Could not read from reg PHY_ID_1_REG\n");
991                 return err;
992         }
993
994         /*  Check if we have a Agere PHY */
995         if ((reg1 == 0xffff) || (reg2 == 0xffff)) {
996
997                 /* Determine which MII address we should be using
998                    determined by the index of the card */
999                 if (qdev->mac_index == 0)
1000                         miiAddr = MII_AGERE_ADDR_1;
1001                 else
1002                         miiAddr = MII_AGERE_ADDR_2;
1003
1004                 err = ql_mii_read_reg_ex(qdev, PHY_ID_0_REG, &reg1, miiAddr);
1005                 if (err != 0) {
1006                         netdev_err(qdev->ndev,
1007                                    "Could not read from reg PHY_ID_0_REG after Agere detected\n");
1008                         return err;
1009                 }
1010
1011                 err = ql_mii_read_reg_ex(qdev, PHY_ID_1_REG, &reg2, miiAddr);
1012                 if (err != 0) {
1013                         netdev_err(qdev->ndev, "Could not read from reg PHY_ID_1_REG after Agere detected\n");
1014                         return err;
1015                 }
1016
1017                 /*  We need to remember to initialize the Agere PHY */
1018                 agereAddrChangeNeeded = true;
1019         }
1020
1021         /*  Determine the particular PHY we have on board to apply
1022             PHY specific initializations */
1023         qdev->phyType = getPhyType(qdev, reg1, reg2);
1024
1025         if ((qdev->phyType == PHY_AGERE_ET1011C) && agereAddrChangeNeeded) {
1026                 /* need this here so address gets changed */
1027                 phyAgereSpecificInit(qdev, miiAddr);
1028         } else if (qdev->phyType == PHY_TYPE_UNKNOWN) {
1029                 netdev_err(qdev->ndev, "PHY is unknown\n");
1030                 return -EIO;
1031         }
1032
1033         return 0;
1034 }
1035
1036 /*
1037  * Caller holds hw_lock.
1038  */
1039 static void ql_mac_enable(struct ql3_adapter *qdev, u32 enable)
1040 {
1041         struct ql3xxx_port_registers __iomem *port_regs =
1042                         qdev->mem_map_registers;
1043         u32 value;
1044
1045         if (enable)
1046                 value = (MAC_CONFIG_REG_PE | (MAC_CONFIG_REG_PE << 16));
1047         else
1048                 value = (MAC_CONFIG_REG_PE << 16);
1049
1050         if (qdev->mac_index)
1051                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1052         else
1053                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1054 }
1055
1056 /*
1057  * Caller holds hw_lock.
1058  */
1059 static void ql_mac_cfg_soft_reset(struct ql3_adapter *qdev, u32 enable)
1060 {
1061         struct ql3xxx_port_registers __iomem *port_regs =
1062                         qdev->mem_map_registers;
1063         u32 value;
1064
1065         if (enable)
1066                 value = (MAC_CONFIG_REG_SR | (MAC_CONFIG_REG_SR << 16));
1067         else
1068                 value = (MAC_CONFIG_REG_SR << 16);
1069
1070         if (qdev->mac_index)
1071                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1072         else
1073                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1074 }
1075
1076 /*
1077  * Caller holds hw_lock.
1078  */
1079 static void ql_mac_cfg_gig(struct ql3_adapter *qdev, u32 enable)
1080 {
1081         struct ql3xxx_port_registers __iomem *port_regs =
1082                         qdev->mem_map_registers;
1083         u32 value;
1084
1085         if (enable)
1086                 value = (MAC_CONFIG_REG_GM | (MAC_CONFIG_REG_GM << 16));
1087         else
1088                 value = (MAC_CONFIG_REG_GM << 16);
1089
1090         if (qdev->mac_index)
1091                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1092         else
1093                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1094 }
1095
1096 /*
1097  * Caller holds hw_lock.
1098  */
1099 static void ql_mac_cfg_full_dup(struct ql3_adapter *qdev, u32 enable)
1100 {
1101         struct ql3xxx_port_registers __iomem *port_regs =
1102                         qdev->mem_map_registers;
1103         u32 value;
1104
1105         if (enable)
1106                 value = (MAC_CONFIG_REG_FD | (MAC_CONFIG_REG_FD << 16));
1107         else
1108                 value = (MAC_CONFIG_REG_FD << 16);
1109
1110         if (qdev->mac_index)
1111                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1112         else
1113                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1114 }
1115
1116 /*
1117  * Caller holds hw_lock.
1118  */
1119 static void ql_mac_cfg_pause(struct ql3_adapter *qdev, u32 enable)
1120 {
1121         struct ql3xxx_port_registers __iomem *port_regs =
1122                         qdev->mem_map_registers;
1123         u32 value;
1124
1125         if (enable)
1126                 value =
1127                     ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) |
1128                      ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) << 16));
1129         else
1130                 value = ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) << 16);
1131
1132         if (qdev->mac_index)
1133                 ql_write_page0_reg(qdev, &port_regs->mac1ConfigReg, value);
1134         else
1135                 ql_write_page0_reg(qdev, &port_regs->mac0ConfigReg, value);
1136 }
1137
1138 /*
1139  * Caller holds hw_lock.
1140  */
1141 static int ql_is_fiber(struct ql3_adapter *qdev)
1142 {
1143         struct ql3xxx_port_registers __iomem *port_regs =
1144                         qdev->mem_map_registers;
1145         u32 bitToCheck = 0;
1146         u32 temp;
1147
1148         switch (qdev->mac_index) {
1149         case 0:
1150                 bitToCheck = PORT_STATUS_SM0;
1151                 break;
1152         case 1:
1153                 bitToCheck = PORT_STATUS_SM1;
1154                 break;
1155         }
1156
1157         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1158         return (temp & bitToCheck) != 0;
1159 }
1160
1161 static int ql_is_auto_cfg(struct ql3_adapter *qdev)
1162 {
1163         u16 reg;
1164         ql_mii_read_reg(qdev, 0x00, &reg);
1165         return (reg & 0x1000) != 0;
1166 }
1167
1168 /*
1169  * Caller holds hw_lock.
1170  */
1171 static int ql_is_auto_neg_complete(struct ql3_adapter *qdev)
1172 {
1173         struct ql3xxx_port_registers __iomem *port_regs =
1174                         qdev->mem_map_registers;
1175         u32 bitToCheck = 0;
1176         u32 temp;
1177
1178         switch (qdev->mac_index) {
1179         case 0:
1180                 bitToCheck = PORT_STATUS_AC0;
1181                 break;
1182         case 1:
1183                 bitToCheck = PORT_STATUS_AC1;
1184                 break;
1185         }
1186
1187         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1188         if (temp & bitToCheck) {
1189                 netif_info(qdev, link, qdev->ndev, "Auto-Negotiate complete\n");
1190                 return 1;
1191         }
1192         netif_info(qdev, link, qdev->ndev, "Auto-Negotiate incomplete\n");
1193         return 0;
1194 }
1195
1196 /*
1197  *  ql_is_neg_pause() returns 1 if pause was negotiated to be on
1198  */
1199 static int ql_is_neg_pause(struct ql3_adapter *qdev)
1200 {
1201         if (ql_is_fiber(qdev))
1202                 return ql_is_petbi_neg_pause(qdev);
1203         else
1204                 return ql_is_phy_neg_pause(qdev);
1205 }
1206
1207 static int ql_auto_neg_error(struct ql3_adapter *qdev)
1208 {
1209         struct ql3xxx_port_registers __iomem *port_regs =
1210                         qdev->mem_map_registers;
1211         u32 bitToCheck = 0;
1212         u32 temp;
1213
1214         switch (qdev->mac_index) {
1215         case 0:
1216                 bitToCheck = PORT_STATUS_AE0;
1217                 break;
1218         case 1:
1219                 bitToCheck = PORT_STATUS_AE1;
1220                 break;
1221         }
1222         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1223         return (temp & bitToCheck) != 0;
1224 }
1225
1226 static u32 ql_get_link_speed(struct ql3_adapter *qdev)
1227 {
1228         if (ql_is_fiber(qdev))
1229                 return SPEED_1000;
1230         else
1231                 return ql_phy_get_speed(qdev);
1232 }
1233
1234 static int ql_is_link_full_dup(struct ql3_adapter *qdev)
1235 {
1236         if (ql_is_fiber(qdev))
1237                 return 1;
1238         else
1239                 return ql_is_full_dup(qdev);
1240 }
1241
1242 /*
1243  * Caller holds hw_lock.
1244  */
1245 static int ql_link_down_detect(struct ql3_adapter *qdev)
1246 {
1247         struct ql3xxx_port_registers __iomem *port_regs =
1248                         qdev->mem_map_registers;
1249         u32 bitToCheck = 0;
1250         u32 temp;
1251
1252         switch (qdev->mac_index) {
1253         case 0:
1254                 bitToCheck = ISP_CONTROL_LINK_DN_0;
1255                 break;
1256         case 1:
1257                 bitToCheck = ISP_CONTROL_LINK_DN_1;
1258                 break;
1259         }
1260
1261         temp =
1262             ql_read_common_reg(qdev, &port_regs->CommonRegs.ispControlStatus);
1263         return (temp & bitToCheck) != 0;
1264 }
1265
1266 /*
1267  * Caller holds hw_lock.
1268  */
1269 static int ql_link_down_detect_clear(struct ql3_adapter *qdev)
1270 {
1271         struct ql3xxx_port_registers __iomem *port_regs =
1272                         qdev->mem_map_registers;
1273
1274         switch (qdev->mac_index) {
1275         case 0:
1276                 ql_write_common_reg(qdev,
1277                                     &port_regs->CommonRegs.ispControlStatus,
1278                                     (ISP_CONTROL_LINK_DN_0) |
1279                                     (ISP_CONTROL_LINK_DN_0 << 16));
1280                 break;
1281
1282         case 1:
1283                 ql_write_common_reg(qdev,
1284                                     &port_regs->CommonRegs.ispControlStatus,
1285                                     (ISP_CONTROL_LINK_DN_1) |
1286                                     (ISP_CONTROL_LINK_DN_1 << 16));
1287                 break;
1288
1289         default:
1290                 return 1;
1291         }
1292
1293         return 0;
1294 }
1295
1296 /*
1297  * Caller holds hw_lock.
1298  */
1299 static int ql_this_adapter_controls_port(struct ql3_adapter *qdev)
1300 {
1301         struct ql3xxx_port_registers __iomem *port_regs =
1302                         qdev->mem_map_registers;
1303         u32 bitToCheck = 0;
1304         u32 temp;
1305
1306         switch (qdev->mac_index) {
1307         case 0:
1308                 bitToCheck = PORT_STATUS_F1_ENABLED;
1309                 break;
1310         case 1:
1311                 bitToCheck = PORT_STATUS_F3_ENABLED;
1312                 break;
1313         default:
1314                 break;
1315         }
1316
1317         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1318         if (temp & bitToCheck) {
1319                 netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1320                              "not link master\n");
1321                 return 0;
1322         }
1323
1324         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev, "link master\n");
1325         return 1;
1326 }
1327
1328 static void ql_phy_reset_ex(struct ql3_adapter *qdev)
1329 {
1330         ql_mii_write_reg_ex(qdev, CONTROL_REG, PHY_CTRL_SOFT_RESET,
1331                             PHYAddr[qdev->mac_index]);
1332 }
1333
1334 static void ql_phy_start_neg_ex(struct ql3_adapter *qdev)
1335 {
1336         u16 reg;
1337         u16 portConfiguration;
1338
1339         if (qdev->phyType == PHY_AGERE_ET1011C)
1340                 ql_mii_write_reg(qdev, 0x13, 0x0000);
1341                                         /* turn off external loopback */
1342
1343         if (qdev->mac_index == 0)
1344                 portConfiguration =
1345                         qdev->nvram_data.macCfg_port0.portConfiguration;
1346         else
1347                 portConfiguration =
1348                         qdev->nvram_data.macCfg_port1.portConfiguration;
1349
1350         /*  Some HBA's in the field are set to 0 and they need to
1351             be reinterpreted with a default value */
1352         if (portConfiguration == 0)
1353                 portConfiguration = PORT_CONFIG_DEFAULT;
1354
1355         /* Set the 1000 advertisements */
1356         ql_mii_read_reg_ex(qdev, PHY_GIG_CONTROL, &reg,
1357                            PHYAddr[qdev->mac_index]);
1358         reg &= ~PHY_GIG_ALL_PARAMS;
1359
1360         if (portConfiguration & PORT_CONFIG_1000MB_SPEED) {
1361                 if (portConfiguration & PORT_CONFIG_FULL_DUPLEX_ENABLED)
1362                         reg |= PHY_GIG_ADV_1000F;
1363                 else
1364                         reg |= PHY_GIG_ADV_1000H;
1365         }
1366
1367         ql_mii_write_reg_ex(qdev, PHY_GIG_CONTROL, reg,
1368                             PHYAddr[qdev->mac_index]);
1369
1370         /* Set the 10/100 & pause negotiation advertisements */
1371         ql_mii_read_reg_ex(qdev, PHY_NEG_ADVER, &reg,
1372                            PHYAddr[qdev->mac_index]);
1373         reg &= ~PHY_NEG_ALL_PARAMS;
1374
1375         if (portConfiguration & PORT_CONFIG_SYM_PAUSE_ENABLED)
1376                 reg |= PHY_NEG_ASY_PAUSE | PHY_NEG_SYM_PAUSE;
1377
1378         if (portConfiguration & PORT_CONFIG_FULL_DUPLEX_ENABLED) {
1379                 if (portConfiguration & PORT_CONFIG_100MB_SPEED)
1380                         reg |= PHY_NEG_ADV_100F;
1381
1382                 if (portConfiguration & PORT_CONFIG_10MB_SPEED)
1383                         reg |= PHY_NEG_ADV_10F;
1384         }
1385
1386         if (portConfiguration & PORT_CONFIG_HALF_DUPLEX_ENABLED) {
1387                 if (portConfiguration & PORT_CONFIG_100MB_SPEED)
1388                         reg |= PHY_NEG_ADV_100H;
1389
1390                 if (portConfiguration & PORT_CONFIG_10MB_SPEED)
1391                         reg |= PHY_NEG_ADV_10H;
1392         }
1393
1394         if (portConfiguration & PORT_CONFIG_1000MB_SPEED)
1395                 reg |= 1;
1396
1397         ql_mii_write_reg_ex(qdev, PHY_NEG_ADVER, reg,
1398                             PHYAddr[qdev->mac_index]);
1399
1400         ql_mii_read_reg_ex(qdev, CONTROL_REG, &reg, PHYAddr[qdev->mac_index]);
1401
1402         ql_mii_write_reg_ex(qdev, CONTROL_REG,
1403                             reg | PHY_CTRL_RESTART_NEG | PHY_CTRL_AUTO_NEG,
1404                             PHYAddr[qdev->mac_index]);
1405 }
1406
1407 static void ql_phy_init_ex(struct ql3_adapter *qdev)
1408 {
1409         ql_phy_reset_ex(qdev);
1410         PHY_Setup(qdev);
1411         ql_phy_start_neg_ex(qdev);
1412 }
1413
1414 /*
1415  * Caller holds hw_lock.
1416  */
1417 static u32 ql_get_link_state(struct ql3_adapter *qdev)
1418 {
1419         struct ql3xxx_port_registers __iomem *port_regs =
1420                         qdev->mem_map_registers;
1421         u32 bitToCheck = 0;
1422         u32 temp, linkState;
1423
1424         switch (qdev->mac_index) {
1425         case 0:
1426                 bitToCheck = PORT_STATUS_UP0;
1427                 break;
1428         case 1:
1429                 bitToCheck = PORT_STATUS_UP1;
1430                 break;
1431         }
1432
1433         temp = ql_read_page0_reg(qdev, &port_regs->portStatus);
1434         if (temp & bitToCheck)
1435                 linkState = LS_UP;
1436         else
1437                 linkState = LS_DOWN;
1438
1439         return linkState;
1440 }
1441
1442 static int ql_port_start(struct ql3_adapter *qdev)
1443 {
1444         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1445                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1446                          2) << 7)) {
1447                 netdev_err(qdev->ndev, "Could not get hw lock for GIO\n");
1448                 return -1;
1449         }
1450
1451         if (ql_is_fiber(qdev)) {
1452                 ql_petbi_init(qdev);
1453         } else {
1454                 /* Copper port */
1455                 ql_phy_init_ex(qdev);
1456         }
1457
1458         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1459         return 0;
1460 }
1461
1462 static int ql_finish_auto_neg(struct ql3_adapter *qdev)
1463 {
1464
1465         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1466                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1467                          2) << 7))
1468                 return -1;
1469
1470         if (!ql_auto_neg_error(qdev)) {
1471                 if (test_bit(QL_LINK_MASTER, &qdev->flags)) {
1472                         /* configure the MAC */
1473                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1474                                      "Configuring link\n");
1475                         ql_mac_cfg_soft_reset(qdev, 1);
1476                         ql_mac_cfg_gig(qdev,
1477                                        (ql_get_link_speed
1478                                         (qdev) ==
1479                                         SPEED_1000));
1480                         ql_mac_cfg_full_dup(qdev,
1481                                             ql_is_link_full_dup
1482                                             (qdev));
1483                         ql_mac_cfg_pause(qdev,
1484                                          ql_is_neg_pause
1485                                          (qdev));
1486                         ql_mac_cfg_soft_reset(qdev, 0);
1487
1488                         /* enable the MAC */
1489                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1490                                      "Enabling mac\n");
1491                         ql_mac_enable(qdev, 1);
1492                 }
1493
1494                 qdev->port_link_state = LS_UP;
1495                 netif_start_queue(qdev->ndev);
1496                 netif_carrier_on(qdev->ndev);
1497                 netif_info(qdev, link, qdev->ndev,
1498                            "Link is up at %d Mbps, %s duplex\n",
1499                            ql_get_link_speed(qdev),
1500                            ql_is_link_full_dup(qdev) ? "full" : "half");
1501
1502         } else {        /* Remote error detected */
1503
1504                 if (test_bit(QL_LINK_MASTER, &qdev->flags)) {
1505                         netif_printk(qdev, link, KERN_DEBUG, qdev->ndev,
1506                                      "Remote error detected. Calling ql_port_start()\n");
1507                         /*
1508                          * ql_port_start() is shared code and needs
1509                          * to lock the PHY on it's own.
1510                          */
1511                         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1512                         if (ql_port_start(qdev))        /* Restart port */
1513                                 return -1;
1514                         return 0;
1515                 }
1516         }
1517         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1518         return 0;
1519 }
1520
1521 static void ql_link_state_machine_work(struct work_struct *work)
1522 {
1523         struct ql3_adapter *qdev =
1524                 container_of(work, struct ql3_adapter, link_state_work.work);
1525
1526         u32 curr_link_state;
1527         unsigned long hw_flags;
1528
1529         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1530
1531         curr_link_state = ql_get_link_state(qdev);
1532
1533         if (test_bit(QL_RESET_ACTIVE, &qdev->flags)) {
1534                 netif_info(qdev, link, qdev->ndev,
1535                            "Reset in progress, skip processing link state\n");
1536
1537                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1538
1539                 /* Restart timer on 2 second interval. */
1540                 mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
1541
1542                 return;
1543         }
1544
1545         switch (qdev->port_link_state) {
1546         default:
1547                 if (test_bit(QL_LINK_MASTER, &qdev->flags))
1548                         ql_port_start(qdev);
1549                 qdev->port_link_state = LS_DOWN;
1550                 /* Fall Through */
1551
1552         case LS_DOWN:
1553                 if (curr_link_state == LS_UP) {
1554                         netif_info(qdev, link, qdev->ndev, "Link is up\n");
1555                         if (ql_is_auto_neg_complete(qdev))
1556                                 ql_finish_auto_neg(qdev);
1557
1558                         if (qdev->port_link_state == LS_UP)
1559                                 ql_link_down_detect_clear(qdev);
1560
1561                         qdev->port_link_state = LS_UP;
1562                 }
1563                 break;
1564
1565         case LS_UP:
1566                 /*
1567                  * See if the link is currently down or went down and came
1568                  * back up
1569                  */
1570                 if (curr_link_state == LS_DOWN) {
1571                         netif_info(qdev, link, qdev->ndev, "Link is down\n");
1572                         qdev->port_link_state = LS_DOWN;
1573                 }
1574                 if (ql_link_down_detect(qdev))
1575                         qdev->port_link_state = LS_DOWN;
1576                 break;
1577         }
1578         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1579
1580         /* Restart timer on 2 second interval. */
1581         mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
1582 }
1583
1584 /*
1585  * Caller must take hw_lock and QL_PHY_GIO_SEM.
1586  */
1587 static void ql_get_phy_owner(struct ql3_adapter *qdev)
1588 {
1589         if (ql_this_adapter_controls_port(qdev))
1590                 set_bit(QL_LINK_MASTER, &qdev->flags);
1591         else
1592                 clear_bit(QL_LINK_MASTER, &qdev->flags);
1593 }
1594
1595 /*
1596  * Caller must take hw_lock and QL_PHY_GIO_SEM.
1597  */
1598 static void ql_init_scan_mode(struct ql3_adapter *qdev)
1599 {
1600         ql_mii_enable_scan_mode(qdev);
1601
1602         if (test_bit(QL_LINK_OPTICAL, &qdev->flags)) {
1603                 if (ql_this_adapter_controls_port(qdev))
1604                         ql_petbi_init_ex(qdev);
1605         } else {
1606                 if (ql_this_adapter_controls_port(qdev))
1607                         ql_phy_init_ex(qdev);
1608         }
1609 }
1610
1611 /*
1612  * MII_Setup needs to be called before taking the PHY out of reset
1613  * so that the management interface clock speed can be set properly.
1614  * It would be better if we had a way to disable MDC until after the
1615  * PHY is out of reset, but we don't have that capability.
1616  */
1617 static int ql_mii_setup(struct ql3_adapter *qdev)
1618 {
1619         u32 reg;
1620         struct ql3xxx_port_registers __iomem *port_regs =
1621                         qdev->mem_map_registers;
1622
1623         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1624                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
1625                          2) << 7))
1626                 return -1;
1627
1628         if (qdev->device_id == QL3032_DEVICE_ID)
1629                 ql_write_page0_reg(qdev,
1630                         &port_regs->macMIIMgmtControlReg, 0x0f00000);
1631
1632         /* Divide 125MHz clock by 28 to meet PHY timing requirements */
1633         reg = MAC_MII_CONTROL_CLK_SEL_DIV28;
1634
1635         ql_write_page0_reg(qdev, &port_regs->macMIIMgmtControlReg,
1636                            reg | ((MAC_MII_CONTROL_CLK_SEL_MASK) << 16));
1637
1638         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1639         return 0;
1640 }
1641
1642 #define SUPPORTED_OPTICAL_MODES (SUPPORTED_1000baseT_Full |     \
1643                                  SUPPORTED_FIBRE |              \
1644                                  SUPPORTED_Autoneg)
1645 #define SUPPORTED_TP_MODES      (SUPPORTED_10baseT_Half |       \
1646                                  SUPPORTED_10baseT_Full |       \
1647                                  SUPPORTED_100baseT_Half |      \
1648                                  SUPPORTED_100baseT_Full |      \
1649                                  SUPPORTED_1000baseT_Half |     \
1650                                  SUPPORTED_1000baseT_Full |     \
1651                                  SUPPORTED_Autoneg |            \
1652                                  SUPPORTED_TP);                 \
1653
1654 static u32 ql_supported_modes(struct ql3_adapter *qdev)
1655 {
1656         if (test_bit(QL_LINK_OPTICAL, &qdev->flags))
1657                 return SUPPORTED_OPTICAL_MODES;
1658
1659         return SUPPORTED_TP_MODES;
1660 }
1661
1662 static int ql_get_auto_cfg_status(struct ql3_adapter *qdev)
1663 {
1664         int status;
1665         unsigned long hw_flags;
1666         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1667         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1668                             (QL_RESOURCE_BITS_BASE_CODE |
1669                              (qdev->mac_index) * 2) << 7)) {
1670                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1671                 return 0;
1672         }
1673         status = ql_is_auto_cfg(qdev);
1674         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1675         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1676         return status;
1677 }
1678
1679 static u32 ql_get_speed(struct ql3_adapter *qdev)
1680 {
1681         u32 status;
1682         unsigned long hw_flags;
1683         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1684         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1685                             (QL_RESOURCE_BITS_BASE_CODE |
1686                              (qdev->mac_index) * 2) << 7)) {
1687                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1688                 return 0;
1689         }
1690         status = ql_get_link_speed(qdev);
1691         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1692         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1693         return status;
1694 }
1695
1696 static int ql_get_full_dup(struct ql3_adapter *qdev)
1697 {
1698         int status;
1699         unsigned long hw_flags;
1700         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
1701         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
1702                             (QL_RESOURCE_BITS_BASE_CODE |
1703                              (qdev->mac_index) * 2) << 7)) {
1704                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1705                 return 0;
1706         }
1707         status = ql_is_link_full_dup(qdev);
1708         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
1709         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
1710         return status;
1711 }
1712
1713 static int ql_get_settings(struct net_device *ndev, struct ethtool_cmd *ecmd)
1714 {
1715         struct ql3_adapter *qdev = netdev_priv(ndev);
1716
1717         ecmd->transceiver = XCVR_INTERNAL;
1718         ecmd->supported = ql_supported_modes(qdev);
1719
1720         if (test_bit(QL_LINK_OPTICAL, &qdev->flags)) {
1721                 ecmd->port = PORT_FIBRE;
1722         } else {
1723                 ecmd->port = PORT_TP;
1724                 ecmd->phy_address = qdev->PHYAddr;
1725         }
1726         ecmd->advertising = ql_supported_modes(qdev);
1727         ecmd->autoneg = ql_get_auto_cfg_status(qdev);
1728         ecmd->speed = ql_get_speed(qdev);
1729         ecmd->duplex = ql_get_full_dup(qdev);
1730         return 0;
1731 }
1732
1733 static void ql_get_drvinfo(struct net_device *ndev,
1734                            struct ethtool_drvinfo *drvinfo)
1735 {
1736         struct ql3_adapter *qdev = netdev_priv(ndev);
1737         strncpy(drvinfo->driver, ql3xxx_driver_name, 32);
1738         strncpy(drvinfo->version, ql3xxx_driver_version, 32);
1739         strncpy(drvinfo->fw_version, "N/A", 32);
1740         strncpy(drvinfo->bus_info, pci_name(qdev->pdev), 32);
1741         drvinfo->regdump_len = 0;
1742         drvinfo->eedump_len = 0;
1743 }
1744
1745 static u32 ql_get_msglevel(struct net_device *ndev)
1746 {
1747         struct ql3_adapter *qdev = netdev_priv(ndev);
1748         return qdev->msg_enable;
1749 }
1750
1751 static void ql_set_msglevel(struct net_device *ndev, u32 value)
1752 {
1753         struct ql3_adapter *qdev = netdev_priv(ndev);
1754         qdev->msg_enable = value;
1755 }
1756
1757 static void ql_get_pauseparam(struct net_device *ndev,
1758                               struct ethtool_pauseparam *pause)
1759 {
1760         struct ql3_adapter *qdev = netdev_priv(ndev);
1761         struct ql3xxx_port_registers __iomem *port_regs =
1762                 qdev->mem_map_registers;
1763
1764         u32 reg;
1765         if (qdev->mac_index == 0)
1766                 reg = ql_read_page0_reg(qdev, &port_regs->mac0ConfigReg);
1767         else
1768                 reg = ql_read_page0_reg(qdev, &port_regs->mac1ConfigReg);
1769
1770         pause->autoneg  = ql_get_auto_cfg_status(qdev);
1771         pause->rx_pause = (reg & MAC_CONFIG_REG_RF) >> 2;
1772         pause->tx_pause = (reg & MAC_CONFIG_REG_TF) >> 1;
1773 }
1774
1775 static const struct ethtool_ops ql3xxx_ethtool_ops = {
1776         .get_settings = ql_get_settings,
1777         .get_drvinfo = ql_get_drvinfo,
1778         .get_link = ethtool_op_get_link,
1779         .get_msglevel = ql_get_msglevel,
1780         .set_msglevel = ql_set_msglevel,
1781         .get_pauseparam = ql_get_pauseparam,
1782 };
1783
1784 static int ql_populate_free_queue(struct ql3_adapter *qdev)
1785 {
1786         struct ql_rcv_buf_cb *lrg_buf_cb = qdev->lrg_buf_free_head;
1787         dma_addr_t map;
1788         int err;
1789
1790         while (lrg_buf_cb) {
1791                 if (!lrg_buf_cb->skb) {
1792                         lrg_buf_cb->skb =
1793                                 netdev_alloc_skb(qdev->ndev,
1794                                                  qdev->lrg_buffer_len);
1795                         if (unlikely(!lrg_buf_cb->skb)) {
1796                                 netdev_printk(KERN_DEBUG, qdev->ndev,
1797                                               "Failed netdev_alloc_skb()\n");
1798                                 break;
1799                         } else {
1800                                 /*
1801                                  * We save some space to copy the ethhdr from
1802                                  * first buffer
1803                                  */
1804                                 skb_reserve(lrg_buf_cb->skb, QL_HEADER_SPACE);
1805                                 map = pci_map_single(qdev->pdev,
1806                                                      lrg_buf_cb->skb->data,
1807                                                      qdev->lrg_buffer_len -
1808                                                      QL_HEADER_SPACE,
1809                                                      PCI_DMA_FROMDEVICE);
1810
1811                                 err = pci_dma_mapping_error(qdev->pdev, map);
1812                                 if (err) {
1813                                         netdev_err(qdev->ndev,
1814                                                    "PCI mapping failed with error: %d\n",
1815                                                    err);
1816                                         dev_kfree_skb(lrg_buf_cb->skb);
1817                                         lrg_buf_cb->skb = NULL;
1818                                         break;
1819                                 }
1820
1821
1822                                 lrg_buf_cb->buf_phy_addr_low =
1823                                         cpu_to_le32(LS_64BITS(map));
1824                                 lrg_buf_cb->buf_phy_addr_high =
1825                                         cpu_to_le32(MS_64BITS(map));
1826                                 dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
1827                                 dma_unmap_len_set(lrg_buf_cb, maplen,
1828                                                   qdev->lrg_buffer_len -
1829                                                   QL_HEADER_SPACE);
1830                                 --qdev->lrg_buf_skb_check;
1831                                 if (!qdev->lrg_buf_skb_check)
1832                                         return 1;
1833                         }
1834                 }
1835                 lrg_buf_cb = lrg_buf_cb->next;
1836         }
1837         return 0;
1838 }
1839
1840 /*
1841  * Caller holds hw_lock.
1842  */
1843 static void ql_update_small_bufq_prod_index(struct ql3_adapter *qdev)
1844 {
1845         struct ql3xxx_port_registers __iomem *port_regs =
1846                 qdev->mem_map_registers;
1847
1848         if (qdev->small_buf_release_cnt >= 16) {
1849                 while (qdev->small_buf_release_cnt >= 16) {
1850                         qdev->small_buf_q_producer_index++;
1851
1852                         if (qdev->small_buf_q_producer_index ==
1853                             NUM_SBUFQ_ENTRIES)
1854                                 qdev->small_buf_q_producer_index = 0;
1855                         qdev->small_buf_release_cnt -= 8;
1856                 }
1857                 wmb();
1858                 writel(qdev->small_buf_q_producer_index,
1859                         &port_regs->CommonRegs.rxSmallQProducerIndex);
1860         }
1861 }
1862
1863 /*
1864  * Caller holds hw_lock.
1865  */
1866 static void ql_update_lrg_bufq_prod_index(struct ql3_adapter *qdev)
1867 {
1868         struct bufq_addr_element *lrg_buf_q_ele;
1869         int i;
1870         struct ql_rcv_buf_cb *lrg_buf_cb;
1871         struct ql3xxx_port_registers __iomem *port_regs =
1872                 qdev->mem_map_registers;
1873
1874         if ((qdev->lrg_buf_free_count >= 8) &&
1875             (qdev->lrg_buf_release_cnt >= 16)) {
1876
1877                 if (qdev->lrg_buf_skb_check)
1878                         if (!ql_populate_free_queue(qdev))
1879                                 return;
1880
1881                 lrg_buf_q_ele = qdev->lrg_buf_next_free;
1882
1883                 while ((qdev->lrg_buf_release_cnt >= 16) &&
1884                        (qdev->lrg_buf_free_count >= 8)) {
1885
1886                         for (i = 0; i < 8; i++) {
1887                                 lrg_buf_cb =
1888                                     ql_get_from_lrg_buf_free_list(qdev);
1889                                 lrg_buf_q_ele->addr_high =
1890                                     lrg_buf_cb->buf_phy_addr_high;
1891                                 lrg_buf_q_ele->addr_low =
1892                                     lrg_buf_cb->buf_phy_addr_low;
1893                                 lrg_buf_q_ele++;
1894
1895                                 qdev->lrg_buf_release_cnt--;
1896                         }
1897
1898                         qdev->lrg_buf_q_producer_index++;
1899
1900                         if (qdev->lrg_buf_q_producer_index ==
1901                             qdev->num_lbufq_entries)
1902                                 qdev->lrg_buf_q_producer_index = 0;
1903
1904                         if (qdev->lrg_buf_q_producer_index ==
1905                             (qdev->num_lbufq_entries - 1)) {
1906                                 lrg_buf_q_ele = qdev->lrg_buf_q_virt_addr;
1907                         }
1908                 }
1909                 wmb();
1910                 qdev->lrg_buf_next_free = lrg_buf_q_ele;
1911                 writel(qdev->lrg_buf_q_producer_index,
1912                         &port_regs->CommonRegs.rxLargeQProducerIndex);
1913         }
1914 }
1915
1916 static void ql_process_mac_tx_intr(struct ql3_adapter *qdev,
1917                                    struct ob_mac_iocb_rsp *mac_rsp)
1918 {
1919         struct ql_tx_buf_cb *tx_cb;
1920         int i;
1921         int retval = 0;
1922
1923         if (mac_rsp->flags & OB_MAC_IOCB_RSP_S) {
1924                 netdev_warn(qdev->ndev,
1925                             "Frame too short but it was padded and sent\n");
1926         }
1927
1928         tx_cb = &qdev->tx_buf[mac_rsp->transaction_id];
1929
1930         /*  Check the transmit response flags for any errors */
1931         if (mac_rsp->flags & OB_MAC_IOCB_RSP_S) {
1932                 netdev_err(qdev->ndev,
1933                            "Frame too short to be legal, frame not sent\n");
1934
1935                 qdev->ndev->stats.tx_errors++;
1936                 retval = -EIO;
1937                 goto frame_not_sent;
1938         }
1939
1940         if (tx_cb->seg_count == 0) {
1941                 netdev_err(qdev->ndev, "tx_cb->seg_count == 0: %d\n",
1942                            mac_rsp->transaction_id);
1943
1944                 qdev->ndev->stats.tx_errors++;
1945                 retval = -EIO;
1946                 goto invalid_seg_count;
1947         }
1948
1949         pci_unmap_single(qdev->pdev,
1950                          dma_unmap_addr(&tx_cb->map[0], mapaddr),
1951                          dma_unmap_len(&tx_cb->map[0], maplen),
1952                          PCI_DMA_TODEVICE);
1953         tx_cb->seg_count--;
1954         if (tx_cb->seg_count) {
1955                 for (i = 1; i < tx_cb->seg_count; i++) {
1956                         pci_unmap_page(qdev->pdev,
1957                                        dma_unmap_addr(&tx_cb->map[i],
1958                                                       mapaddr),
1959                                        dma_unmap_len(&tx_cb->map[i], maplen),
1960                                        PCI_DMA_TODEVICE);
1961                 }
1962         }
1963         qdev->ndev->stats.tx_packets++;
1964         qdev->ndev->stats.tx_bytes += tx_cb->skb->len;
1965
1966 frame_not_sent:
1967         dev_kfree_skb_irq(tx_cb->skb);
1968         tx_cb->skb = NULL;
1969
1970 invalid_seg_count:
1971         atomic_inc(&qdev->tx_count);
1972 }
1973
1974 static void ql_get_sbuf(struct ql3_adapter *qdev)
1975 {
1976         if (++qdev->small_buf_index == NUM_SMALL_BUFFERS)
1977                 qdev->small_buf_index = 0;
1978         qdev->small_buf_release_cnt++;
1979 }
1980
1981 static struct ql_rcv_buf_cb *ql_get_lbuf(struct ql3_adapter *qdev)
1982 {
1983         struct ql_rcv_buf_cb *lrg_buf_cb = NULL;
1984         lrg_buf_cb = &qdev->lrg_buf[qdev->lrg_buf_index];
1985         qdev->lrg_buf_release_cnt++;
1986         if (++qdev->lrg_buf_index == qdev->num_large_buffers)
1987                 qdev->lrg_buf_index = 0;
1988         return lrg_buf_cb;
1989 }
1990
1991 /*
1992  * The difference between 3022 and 3032 for inbound completions:
1993  * 3022 uses two buffers per completion.  The first buffer contains
1994  * (some) header info, the second the remainder of the headers plus
1995  * the data.  For this chip we reserve some space at the top of the
1996  * receive buffer so that the header info in buffer one can be
1997  * prepended to the buffer two.  Buffer two is the sent up while
1998  * buffer one is returned to the hardware to be reused.
1999  * 3032 receives all of it's data and headers in one buffer for a
2000  * simpler process.  3032 also supports checksum verification as
2001  * can be seen in ql_process_macip_rx_intr().
2002  */
2003 static void ql_process_mac_rx_intr(struct ql3_adapter *qdev,
2004                                    struct ib_mac_iocb_rsp *ib_mac_rsp_ptr)
2005 {
2006         struct ql_rcv_buf_cb *lrg_buf_cb1 = NULL;
2007         struct ql_rcv_buf_cb *lrg_buf_cb2 = NULL;
2008         struct sk_buff *skb;
2009         u16 length = le16_to_cpu(ib_mac_rsp_ptr->length);
2010
2011         /*
2012          * Get the inbound address list (small buffer).
2013          */
2014         ql_get_sbuf(qdev);
2015
2016         if (qdev->device_id == QL3022_DEVICE_ID)
2017                 lrg_buf_cb1 = ql_get_lbuf(qdev);
2018
2019         /* start of second buffer */
2020         lrg_buf_cb2 = ql_get_lbuf(qdev);
2021         skb = lrg_buf_cb2->skb;
2022
2023         qdev->ndev->stats.rx_packets++;
2024         qdev->ndev->stats.rx_bytes += length;
2025
2026         skb_put(skb, length);
2027         pci_unmap_single(qdev->pdev,
2028                          dma_unmap_addr(lrg_buf_cb2, mapaddr),
2029                          dma_unmap_len(lrg_buf_cb2, maplen),
2030                          PCI_DMA_FROMDEVICE);
2031         prefetch(skb->data);
2032         skb_checksum_none_assert(skb);
2033         skb->protocol = eth_type_trans(skb, qdev->ndev);
2034
2035         netif_receive_skb(skb);
2036         lrg_buf_cb2->skb = NULL;
2037
2038         if (qdev->device_id == QL3022_DEVICE_ID)
2039                 ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb1);
2040         ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb2);
2041 }
2042
2043 static void ql_process_macip_rx_intr(struct ql3_adapter *qdev,
2044                                      struct ib_ip_iocb_rsp *ib_ip_rsp_ptr)
2045 {
2046         struct ql_rcv_buf_cb *lrg_buf_cb1 = NULL;
2047         struct ql_rcv_buf_cb *lrg_buf_cb2 = NULL;
2048         struct sk_buff *skb1 = NULL, *skb2;
2049         struct net_device *ndev = qdev->ndev;
2050         u16 length = le16_to_cpu(ib_ip_rsp_ptr->length);
2051         u16 size = 0;
2052
2053         /*
2054          * Get the inbound address list (small buffer).
2055          */
2056
2057         ql_get_sbuf(qdev);
2058
2059         if (qdev->device_id == QL3022_DEVICE_ID) {
2060                 /* start of first buffer on 3022 */
2061                 lrg_buf_cb1 = ql_get_lbuf(qdev);
2062                 skb1 = lrg_buf_cb1->skb;
2063                 size = ETH_HLEN;
2064                 if (*((u16 *) skb1->data) != 0xFFFF)
2065                         size += VLAN_ETH_HLEN - ETH_HLEN;
2066         }
2067
2068         /* start of second buffer */
2069         lrg_buf_cb2 = ql_get_lbuf(qdev);
2070         skb2 = lrg_buf_cb2->skb;
2071
2072         skb_put(skb2, length);  /* Just the second buffer length here. */
2073         pci_unmap_single(qdev->pdev,
2074                          dma_unmap_addr(lrg_buf_cb2, mapaddr),
2075                          dma_unmap_len(lrg_buf_cb2, maplen),
2076                          PCI_DMA_FROMDEVICE);
2077         prefetch(skb2->data);
2078
2079         skb_checksum_none_assert(skb2);
2080         if (qdev->device_id == QL3022_DEVICE_ID) {
2081                 /*
2082                  * Copy the ethhdr from first buffer to second. This
2083                  * is necessary for 3022 IP completions.
2084                  */
2085                 skb_copy_from_linear_data_offset(skb1, VLAN_ID_LEN,
2086                                                  skb_push(skb2, size), size);
2087         } else {
2088                 u16 checksum = le16_to_cpu(ib_ip_rsp_ptr->checksum);
2089                 if (checksum &
2090                         (IB_IP_IOCB_RSP_3032_ICE |
2091                          IB_IP_IOCB_RSP_3032_CE)) {
2092                         netdev_err(ndev,
2093                                    "%s: Bad checksum for this %s packet, checksum = %x\n",
2094                                    __func__,
2095                                    ((checksum & IB_IP_IOCB_RSP_3032_TCP) ?
2096                                     "TCP" : "UDP"), checksum);
2097                 } else if ((checksum & IB_IP_IOCB_RSP_3032_TCP) ||
2098                                 (checksum & IB_IP_IOCB_RSP_3032_UDP &&
2099                                 !(checksum & IB_IP_IOCB_RSP_3032_NUC))) {
2100                         skb2->ip_summed = CHECKSUM_UNNECESSARY;
2101                 }
2102         }
2103         skb2->protocol = eth_type_trans(skb2, qdev->ndev);
2104
2105         netif_receive_skb(skb2);
2106         ndev->stats.rx_packets++;
2107         ndev->stats.rx_bytes += length;
2108         lrg_buf_cb2->skb = NULL;
2109
2110         if (qdev->device_id == QL3022_DEVICE_ID)
2111                 ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb1);
2112         ql_release_to_lrg_buf_free_list(qdev, lrg_buf_cb2);
2113 }
2114
2115 static int ql_tx_rx_clean(struct ql3_adapter *qdev,
2116                           int *tx_cleaned, int *rx_cleaned, int work_to_do)
2117 {
2118         struct net_rsp_iocb *net_rsp;
2119         struct net_device *ndev = qdev->ndev;
2120         int work_done = 0;
2121
2122         /* While there are entries in the completion queue. */
2123         while ((le32_to_cpu(*(qdev->prsp_producer_index)) !=
2124                 qdev->rsp_consumer_index) && (work_done < work_to_do)) {
2125
2126                 net_rsp = qdev->rsp_current;
2127                 rmb();
2128                 /*
2129                  * Fix 4032 chip's undocumented "feature" where bit-8 is set
2130                  * if the inbound completion is for a VLAN.
2131                  */
2132                 if (qdev->device_id == QL3032_DEVICE_ID)
2133                         net_rsp->opcode &= 0x7f;
2134                 switch (net_rsp->opcode) {
2135
2136                 case OPCODE_OB_MAC_IOCB_FN0:
2137                 case OPCODE_OB_MAC_IOCB_FN2:
2138                         ql_process_mac_tx_intr(qdev, (struct ob_mac_iocb_rsp *)
2139                                                net_rsp);
2140                         (*tx_cleaned)++;
2141                         break;
2142
2143                 case OPCODE_IB_MAC_IOCB:
2144                 case OPCODE_IB_3032_MAC_IOCB:
2145                         ql_process_mac_rx_intr(qdev, (struct ib_mac_iocb_rsp *)
2146                                                net_rsp);
2147                         (*rx_cleaned)++;
2148                         break;
2149
2150                 case OPCODE_IB_IP_IOCB:
2151                 case OPCODE_IB_3032_IP_IOCB:
2152                         ql_process_macip_rx_intr(qdev, (struct ib_ip_iocb_rsp *)
2153                                                  net_rsp);
2154                         (*rx_cleaned)++;
2155                         break;
2156                 default: {
2157                         u32 *tmp = (u32 *)net_rsp;
2158                         netdev_err(ndev,
2159                                    "Hit default case, not handled!\n"
2160                                    "    dropping the packet, opcode = %x\n"
2161                                    "0x%08lx 0x%08lx 0x%08lx 0x%08lx\n",
2162                                    net_rsp->opcode,
2163                                    (unsigned long int)tmp[0],
2164                                    (unsigned long int)tmp[1],
2165                                    (unsigned long int)tmp[2],
2166                                    (unsigned long int)tmp[3]);
2167                 }
2168                 }
2169
2170                 qdev->rsp_consumer_index++;
2171
2172                 if (qdev->rsp_consumer_index == NUM_RSP_Q_ENTRIES) {
2173                         qdev->rsp_consumer_index = 0;
2174                         qdev->rsp_current = qdev->rsp_q_virt_addr;
2175                 } else {
2176                         qdev->rsp_current++;
2177                 }
2178
2179                 work_done = *tx_cleaned + *rx_cleaned;
2180         }
2181
2182         return work_done;
2183 }
2184
2185 static int ql_poll(struct napi_struct *napi, int budget)
2186 {
2187         struct ql3_adapter *qdev = container_of(napi, struct ql3_adapter, napi);
2188         int rx_cleaned = 0, tx_cleaned = 0;
2189         unsigned long hw_flags;
2190         struct ql3xxx_port_registers __iomem *port_regs =
2191                 qdev->mem_map_registers;
2192
2193         ql_tx_rx_clean(qdev, &tx_cleaned, &rx_cleaned, budget);
2194
2195         if (tx_cleaned + rx_cleaned != budget) {
2196                 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
2197                 __napi_complete(napi);
2198                 ql_update_small_bufq_prod_index(qdev);
2199                 ql_update_lrg_bufq_prod_index(qdev);
2200                 writel(qdev->rsp_consumer_index,
2201                             &port_regs->CommonRegs.rspQConsumerIndex);
2202                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
2203
2204                 ql_enable_interrupts(qdev);
2205         }
2206         return tx_cleaned + rx_cleaned;
2207 }
2208
2209 static irqreturn_t ql3xxx_isr(int irq, void *dev_id)
2210 {
2211
2212         struct net_device *ndev = dev_id;
2213         struct ql3_adapter *qdev = netdev_priv(ndev);
2214         struct ql3xxx_port_registers __iomem *port_regs =
2215                 qdev->mem_map_registers;
2216         u32 value;
2217         int handled = 1;
2218         u32 var;
2219
2220         value = ql_read_common_reg_l(qdev,
2221                                      &port_regs->CommonRegs.ispControlStatus);
2222
2223         if (value & (ISP_CONTROL_FE | ISP_CONTROL_RI)) {
2224                 spin_lock(&qdev->adapter_lock);
2225                 netif_stop_queue(qdev->ndev);
2226                 netif_carrier_off(qdev->ndev);
2227                 ql_disable_interrupts(qdev);
2228                 qdev->port_link_state = LS_DOWN;
2229                 set_bit(QL_RESET_ACTIVE, &qdev->flags) ;
2230
2231                 if (value & ISP_CONTROL_FE) {
2232                         /*
2233                          * Chip Fatal Error.
2234                          */
2235                         var =
2236                             ql_read_page0_reg_l(qdev,
2237                                               &port_regs->PortFatalErrStatus);
2238                         netdev_warn(ndev,
2239                                     "Resetting chip. PortFatalErrStatus register = 0x%x\n",
2240                                     var);
2241                         set_bit(QL_RESET_START, &qdev->flags) ;
2242                 } else {
2243                         /*
2244                          * Soft Reset Requested.
2245                          */
2246                         set_bit(QL_RESET_PER_SCSI, &qdev->flags) ;
2247                         netdev_err(ndev,
2248                                    "Another function issued a reset to the chip. ISR value = %x\n",
2249                                    value);
2250                 }
2251                 queue_delayed_work(qdev->workqueue, &qdev->reset_work, 0);
2252                 spin_unlock(&qdev->adapter_lock);
2253         } else if (value & ISP_IMR_DISABLE_CMPL_INT) {
2254                 ql_disable_interrupts(qdev);
2255                 if (likely(napi_schedule_prep(&qdev->napi)))
2256                         __napi_schedule(&qdev->napi);
2257         } else
2258                 return IRQ_NONE;
2259
2260         return IRQ_RETVAL(handled);
2261 }
2262
2263 /*
2264  * Get the total number of segments needed for the given number of fragments.
2265  * This is necessary because outbound address lists (OAL) will be used when
2266  * more than two frags are given.  Each address list has 5 addr/len pairs.
2267  * The 5th pair in each OAL is used to  point to the next OAL if more frags
2268  * are coming.  That is why the frags:segment count ratio is not linear.
2269  */
2270 static int ql_get_seg_count(struct ql3_adapter *qdev, unsigned short frags)
2271 {
2272         if (qdev->device_id == QL3022_DEVICE_ID)
2273                 return 1;
2274
2275         if (frags <= 2)
2276                 return frags + 1;
2277         else if (frags <= 6)
2278                 return frags + 2;
2279         else if (frags <= 10)
2280                 return frags + 3;
2281         else if (frags <= 14)
2282                 return frags + 4;
2283         else if (frags <= 18)
2284                 return frags + 5;
2285         return -1;
2286 }
2287
2288 static void ql_hw_csum_setup(const struct sk_buff *skb,
2289                              struct ob_mac_iocb_req *mac_iocb_ptr)
2290 {
2291         const struct iphdr *ip = ip_hdr(skb);
2292
2293         mac_iocb_ptr->ip_hdr_off = skb_network_offset(skb);
2294         mac_iocb_ptr->ip_hdr_len = ip->ihl;
2295
2296         if (ip->protocol == IPPROTO_TCP) {
2297                 mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_TC |
2298                         OB_3032MAC_IOCB_REQ_IC;
2299         } else {
2300                 mac_iocb_ptr->flags1 |= OB_3032MAC_IOCB_REQ_UC |
2301                         OB_3032MAC_IOCB_REQ_IC;
2302         }
2303
2304 }
2305
2306 /*
2307  * Map the buffers for this transmit.
2308  * This will return NETDEV_TX_BUSY or NETDEV_TX_OK based on success.
2309  */
2310 static int ql_send_map(struct ql3_adapter *qdev,
2311                                 struct ob_mac_iocb_req *mac_iocb_ptr,
2312                                 struct ql_tx_buf_cb *tx_cb,
2313                                 struct sk_buff *skb)
2314 {
2315         struct oal *oal;
2316         struct oal_entry *oal_entry;
2317         int len = skb_headlen(skb);
2318         dma_addr_t map;
2319         int err;
2320         int completed_segs, i;
2321         int seg_cnt, seg = 0;
2322         int frag_cnt = (int)skb_shinfo(skb)->nr_frags;
2323
2324         seg_cnt = tx_cb->seg_count;
2325         /*
2326          * Map the skb buffer first.
2327          */
2328         map = pci_map_single(qdev->pdev, skb->data, len, PCI_DMA_TODEVICE);
2329
2330         err = pci_dma_mapping_error(qdev->pdev, map);
2331         if (err) {
2332                 netdev_err(qdev->ndev, "PCI mapping failed with error: %d\n",
2333                            err);
2334
2335                 return NETDEV_TX_BUSY;
2336         }
2337
2338         oal_entry = (struct oal_entry *)&mac_iocb_ptr->buf_addr0_low;
2339         oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2340         oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2341         oal_entry->len = cpu_to_le32(len);
2342         dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2343         dma_unmap_len_set(&tx_cb->map[seg], maplen, len);
2344         seg++;
2345
2346         if (seg_cnt == 1) {
2347                 /* Terminate the last segment. */
2348                 oal_entry->len |= cpu_to_le32(OAL_LAST_ENTRY);
2349                 return NETDEV_TX_OK;
2350         }
2351         oal = tx_cb->oal;
2352         for (completed_segs = 0;
2353              completed_segs < frag_cnt;
2354              completed_segs++, seg++) {
2355                 skb_frag_t *frag = &skb_shinfo(skb)->frags[completed_segs];
2356                 oal_entry++;
2357                 /*
2358                  * Check for continuation requirements.
2359                  * It's strange but necessary.
2360                  * Continuation entry points to outbound address list.
2361                  */
2362                 if ((seg == 2 && seg_cnt > 3) ||
2363                     (seg == 7 && seg_cnt > 8) ||
2364                     (seg == 12 && seg_cnt > 13) ||
2365                     (seg == 17 && seg_cnt > 18)) {
2366                         map = pci_map_single(qdev->pdev, oal,
2367                                              sizeof(struct oal),
2368                                              PCI_DMA_TODEVICE);
2369
2370                         err = pci_dma_mapping_error(qdev->pdev, map);
2371                         if (err) {
2372                                 netdev_err(qdev->ndev,
2373                                            "PCI mapping outbound address list with error: %d\n",
2374                                            err);
2375                                 goto map_error;
2376                         }
2377
2378                         oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2379                         oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2380                         oal_entry->len = cpu_to_le32(sizeof(struct oal) |
2381                                                      OAL_CONT_ENTRY);
2382                         dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2383                         dma_unmap_len_set(&tx_cb->map[seg], maplen,
2384                                           sizeof(struct oal));
2385                         oal_entry = (struct oal_entry *)oal;
2386                         oal++;
2387                         seg++;
2388                 }
2389
2390                 map = pci_map_page(qdev->pdev, frag->page,
2391                                    frag->page_offset, frag->size,
2392                                    PCI_DMA_TODEVICE);
2393
2394                 err = pci_dma_mapping_error(qdev->pdev, map);
2395                 if (err) {
2396                         netdev_err(qdev->ndev,
2397                                    "PCI mapping frags failed with error: %d\n",
2398                                    err);
2399                         goto map_error;
2400                 }
2401
2402                 oal_entry->dma_lo = cpu_to_le32(LS_64BITS(map));
2403                 oal_entry->dma_hi = cpu_to_le32(MS_64BITS(map));
2404                 oal_entry->len = cpu_to_le32(frag->size);
2405                 dma_unmap_addr_set(&tx_cb->map[seg], mapaddr, map);
2406                 dma_unmap_len_set(&tx_cb->map[seg], maplen, frag->size);
2407                 }
2408         /* Terminate the last segment. */
2409         oal_entry->len |= cpu_to_le32(OAL_LAST_ENTRY);
2410         return NETDEV_TX_OK;
2411
2412 map_error:
2413         /* A PCI mapping failed and now we will need to back out
2414          * We need to traverse through the oal's and associated pages which
2415          * have been mapped and now we must unmap them to clean up properly
2416          */
2417
2418         seg = 1;
2419         oal_entry = (struct oal_entry *)&mac_iocb_ptr->buf_addr0_low;
2420         oal = tx_cb->oal;
2421         for (i = 0; i < completed_segs; i++, seg++) {
2422                 oal_entry++;
2423
2424                 /*
2425                  * Check for continuation requirements.
2426                  * It's strange but necessary.
2427                  */
2428
2429                 if ((seg == 2 && seg_cnt > 3) ||
2430                     (seg == 7 && seg_cnt > 8) ||
2431                     (seg == 12 && seg_cnt > 13) ||
2432                     (seg == 17 && seg_cnt > 18)) {
2433                         pci_unmap_single(qdev->pdev,
2434                                 dma_unmap_addr(&tx_cb->map[seg], mapaddr),
2435                                 dma_unmap_len(&tx_cb->map[seg], maplen),
2436                                  PCI_DMA_TODEVICE);
2437                         oal++;
2438                         seg++;
2439                 }
2440
2441                 pci_unmap_page(qdev->pdev,
2442                                dma_unmap_addr(&tx_cb->map[seg], mapaddr),
2443                                dma_unmap_len(&tx_cb->map[seg], maplen),
2444                                PCI_DMA_TODEVICE);
2445         }
2446
2447         pci_unmap_single(qdev->pdev,
2448                          dma_unmap_addr(&tx_cb->map[0], mapaddr),
2449                          dma_unmap_addr(&tx_cb->map[0], maplen),
2450                          PCI_DMA_TODEVICE);
2451
2452         return NETDEV_TX_BUSY;
2453
2454 }
2455
2456 /*
2457  * The difference between 3022 and 3032 sends:
2458  * 3022 only supports a simple single segment transmission.
2459  * 3032 supports checksumming and scatter/gather lists (fragments).
2460  * The 3032 supports sglists by using the 3 addr/len pairs (ALP)
2461  * in the IOCB plus a chain of outbound address lists (OAL) that
2462  * each contain 5 ALPs.  The last ALP of the IOCB (3rd) or OAL (5th)
2463  * will used to point to an OAL when more ALP entries are required.
2464  * The IOCB is always the top of the chain followed by one or more
2465  * OALs (when necessary).
2466  */
2467 static netdev_tx_t ql3xxx_send(struct sk_buff *skb,
2468                                struct net_device *ndev)
2469 {
2470         struct ql3_adapter *qdev = netdev_priv(ndev);
2471         struct ql3xxx_port_registers __iomem *port_regs =
2472                         qdev->mem_map_registers;
2473         struct ql_tx_buf_cb *tx_cb;
2474         u32 tot_len = skb->len;
2475         struct ob_mac_iocb_req *mac_iocb_ptr;
2476
2477         if (unlikely(atomic_read(&qdev->tx_count) < 2))
2478                 return NETDEV_TX_BUSY;
2479
2480         tx_cb = &qdev->tx_buf[qdev->req_producer_index];
2481         tx_cb->seg_count = ql_get_seg_count(qdev,
2482                                              skb_shinfo(skb)->nr_frags);
2483         if (tx_cb->seg_count == -1) {
2484                 netdev_err(ndev, "%s: invalid segment count!\n", __func__);
2485                 return NETDEV_TX_OK;
2486         }
2487
2488         mac_iocb_ptr = tx_cb->queue_entry;
2489         memset((void *)mac_iocb_ptr, 0, sizeof(struct ob_mac_iocb_req));
2490         mac_iocb_ptr->opcode = qdev->mac_ob_opcode;
2491         mac_iocb_ptr->flags = OB_MAC_IOCB_REQ_X;
2492         mac_iocb_ptr->flags |= qdev->mb_bit_mask;
2493         mac_iocb_ptr->transaction_id = qdev->req_producer_index;
2494         mac_iocb_ptr->data_len = cpu_to_le16((u16) tot_len);
2495         tx_cb->skb = skb;
2496         if (qdev->device_id == QL3032_DEVICE_ID &&
2497             skb->ip_summed == CHECKSUM_PARTIAL)
2498                 ql_hw_csum_setup(skb, mac_iocb_ptr);
2499
2500         if (ql_send_map(qdev, mac_iocb_ptr, tx_cb, skb) != NETDEV_TX_OK) {
2501                 netdev_err(ndev, "%s: Could not map the segments!\n", __func__);
2502                 return NETDEV_TX_BUSY;
2503         }
2504
2505         wmb();
2506         qdev->req_producer_index++;
2507         if (qdev->req_producer_index == NUM_REQ_Q_ENTRIES)
2508                 qdev->req_producer_index = 0;
2509         wmb();
2510         ql_write_common_reg_l(qdev,
2511                             &port_regs->CommonRegs.reqQProducerIndex,
2512                             qdev->req_producer_index);
2513
2514         netif_printk(qdev, tx_queued, KERN_DEBUG, ndev,
2515                      "tx queued, slot %d, len %d\n",
2516                      qdev->req_producer_index, skb->len);
2517
2518         atomic_dec(&qdev->tx_count);
2519         return NETDEV_TX_OK;
2520 }
2521
2522 static int ql_alloc_net_req_rsp_queues(struct ql3_adapter *qdev)
2523 {
2524         qdev->req_q_size =
2525             (u32) (NUM_REQ_Q_ENTRIES * sizeof(struct ob_mac_iocb_req));
2526
2527         qdev->req_q_virt_addr =
2528             pci_alloc_consistent(qdev->pdev,
2529                                  (size_t) qdev->req_q_size,
2530                                  &qdev->req_q_phy_addr);
2531
2532         if ((qdev->req_q_virt_addr == NULL) ||
2533             LS_64BITS(qdev->req_q_phy_addr) & (qdev->req_q_size - 1)) {
2534                 netdev_err(qdev->ndev, "reqQ failed\n");
2535                 return -ENOMEM;
2536         }
2537
2538         qdev->rsp_q_size = NUM_RSP_Q_ENTRIES * sizeof(struct net_rsp_iocb);
2539
2540         qdev->rsp_q_virt_addr =
2541             pci_alloc_consistent(qdev->pdev,
2542                                  (size_t) qdev->rsp_q_size,
2543                                  &qdev->rsp_q_phy_addr);
2544
2545         if ((qdev->rsp_q_virt_addr == NULL) ||
2546             LS_64BITS(qdev->rsp_q_phy_addr) & (qdev->rsp_q_size - 1)) {
2547                 netdev_err(qdev->ndev, "rspQ allocation failed\n");
2548                 pci_free_consistent(qdev->pdev, (size_t) qdev->req_q_size,
2549                                     qdev->req_q_virt_addr,
2550                                     qdev->req_q_phy_addr);
2551                 return -ENOMEM;
2552         }
2553
2554         set_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags);
2555
2556         return 0;
2557 }
2558
2559 static void ql_free_net_req_rsp_queues(struct ql3_adapter *qdev)
2560 {
2561         if (!test_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags)) {
2562                 netdev_info(qdev->ndev, "Already done\n");
2563                 return;
2564         }
2565
2566         pci_free_consistent(qdev->pdev,
2567                             qdev->req_q_size,
2568                             qdev->req_q_virt_addr, qdev->req_q_phy_addr);
2569
2570         qdev->req_q_virt_addr = NULL;
2571
2572         pci_free_consistent(qdev->pdev,
2573                             qdev->rsp_q_size,
2574                             qdev->rsp_q_virt_addr, qdev->rsp_q_phy_addr);
2575
2576         qdev->rsp_q_virt_addr = NULL;
2577
2578         clear_bit(QL_ALLOC_REQ_RSP_Q_DONE, &qdev->flags);
2579 }
2580
2581 static int ql_alloc_buffer_queues(struct ql3_adapter *qdev)
2582 {
2583         /* Create Large Buffer Queue */
2584         qdev->lrg_buf_q_size =
2585                 qdev->num_lbufq_entries * sizeof(struct lrg_buf_q_entry);
2586         if (qdev->lrg_buf_q_size < PAGE_SIZE)
2587                 qdev->lrg_buf_q_alloc_size = PAGE_SIZE;
2588         else
2589                 qdev->lrg_buf_q_alloc_size = qdev->lrg_buf_q_size * 2;
2590
2591         qdev->lrg_buf =
2592                 kmalloc(qdev->num_large_buffers * sizeof(struct ql_rcv_buf_cb),
2593                         GFP_KERNEL);
2594         if (qdev->lrg_buf == NULL) {
2595                 netdev_err(qdev->ndev, "qdev->lrg_buf alloc failed\n");
2596                 return -ENOMEM;
2597         }
2598
2599         qdev->lrg_buf_q_alloc_virt_addr =
2600                 pci_alloc_consistent(qdev->pdev,
2601                                      qdev->lrg_buf_q_alloc_size,
2602                                      &qdev->lrg_buf_q_alloc_phy_addr);
2603
2604         if (qdev->lrg_buf_q_alloc_virt_addr == NULL) {
2605                 netdev_err(qdev->ndev, "lBufQ failed\n");
2606                 return -ENOMEM;
2607         }
2608         qdev->lrg_buf_q_virt_addr = qdev->lrg_buf_q_alloc_virt_addr;
2609         qdev->lrg_buf_q_phy_addr = qdev->lrg_buf_q_alloc_phy_addr;
2610
2611         /* Create Small Buffer Queue */
2612         qdev->small_buf_q_size =
2613                 NUM_SBUFQ_ENTRIES * sizeof(struct lrg_buf_q_entry);
2614         if (qdev->small_buf_q_size < PAGE_SIZE)
2615                 qdev->small_buf_q_alloc_size = PAGE_SIZE;
2616         else
2617                 qdev->small_buf_q_alloc_size = qdev->small_buf_q_size * 2;
2618
2619         qdev->small_buf_q_alloc_virt_addr =
2620                 pci_alloc_consistent(qdev->pdev,
2621                                      qdev->small_buf_q_alloc_size,
2622                                      &qdev->small_buf_q_alloc_phy_addr);
2623
2624         if (qdev->small_buf_q_alloc_virt_addr == NULL) {
2625                 netdev_err(qdev->ndev, "Small Buffer Queue allocation failed\n");
2626                 pci_free_consistent(qdev->pdev, qdev->lrg_buf_q_alloc_size,
2627                                     qdev->lrg_buf_q_alloc_virt_addr,
2628                                     qdev->lrg_buf_q_alloc_phy_addr);
2629                 return -ENOMEM;
2630         }
2631
2632         qdev->small_buf_q_virt_addr = qdev->small_buf_q_alloc_virt_addr;
2633         qdev->small_buf_q_phy_addr = qdev->small_buf_q_alloc_phy_addr;
2634         set_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags);
2635         return 0;
2636 }
2637
2638 static void ql_free_buffer_queues(struct ql3_adapter *qdev)
2639 {
2640         if (!test_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags)) {
2641                 netdev_info(qdev->ndev, "Already done\n");
2642                 return;
2643         }
2644         kfree(qdev->lrg_buf);
2645         pci_free_consistent(qdev->pdev,
2646                             qdev->lrg_buf_q_alloc_size,
2647                             qdev->lrg_buf_q_alloc_virt_addr,
2648                             qdev->lrg_buf_q_alloc_phy_addr);
2649
2650         qdev->lrg_buf_q_virt_addr = NULL;
2651
2652         pci_free_consistent(qdev->pdev,
2653                             qdev->small_buf_q_alloc_size,
2654                             qdev->small_buf_q_alloc_virt_addr,
2655                             qdev->small_buf_q_alloc_phy_addr);
2656
2657         qdev->small_buf_q_virt_addr = NULL;
2658
2659         clear_bit(QL_ALLOC_BUFQS_DONE, &qdev->flags);
2660 }
2661
2662 static int ql_alloc_small_buffers(struct ql3_adapter *qdev)
2663 {
2664         int i;
2665         struct bufq_addr_element *small_buf_q_entry;
2666
2667         /* Currently we allocate on one of memory and use it for smallbuffers */
2668         qdev->small_buf_total_size =
2669                 (QL_ADDR_ELE_PER_BUFQ_ENTRY * NUM_SBUFQ_ENTRIES *
2670                  QL_SMALL_BUFFER_SIZE);
2671
2672         qdev->small_buf_virt_addr =
2673                 pci_alloc_consistent(qdev->pdev,
2674                                      qdev->small_buf_total_size,
2675                                      &qdev->small_buf_phy_addr);
2676
2677         if (qdev->small_buf_virt_addr == NULL) {
2678                 netdev_err(qdev->ndev, "Failed to get small buffer memory\n");
2679                 return -ENOMEM;
2680         }
2681
2682         qdev->small_buf_phy_addr_low = LS_64BITS(qdev->small_buf_phy_addr);
2683         qdev->small_buf_phy_addr_high = MS_64BITS(qdev->small_buf_phy_addr);
2684
2685         small_buf_q_entry = qdev->small_buf_q_virt_addr;
2686
2687         /* Initialize the small buffer queue. */
2688         for (i = 0; i < (QL_ADDR_ELE_PER_BUFQ_ENTRY * NUM_SBUFQ_ENTRIES); i++) {
2689                 small_buf_q_entry->addr_high =
2690                     cpu_to_le32(qdev->small_buf_phy_addr_high);
2691                 small_buf_q_entry->addr_low =
2692                     cpu_to_le32(qdev->small_buf_phy_addr_low +
2693                                 (i * QL_SMALL_BUFFER_SIZE));
2694                 small_buf_q_entry++;
2695         }
2696         qdev->small_buf_index = 0;
2697         set_bit(QL_ALLOC_SMALL_BUF_DONE, &qdev->flags);
2698         return 0;
2699 }
2700
2701 static void ql_free_small_buffers(struct ql3_adapter *qdev)
2702 {
2703         if (!test_bit(QL_ALLOC_SMALL_BUF_DONE, &qdev->flags)) {
2704                 netdev_info(qdev->ndev, "Already done\n");
2705                 return;
2706         }
2707         if (qdev->small_buf_virt_addr != NULL) {
2708                 pci_free_consistent(qdev->pdev,
2709                                     qdev->small_buf_total_size,
2710                                     qdev->small_buf_virt_addr,
2711                                     qdev->small_buf_phy_addr);
2712
2713                 qdev->small_buf_virt_addr = NULL;
2714         }
2715 }
2716
2717 static void ql_free_large_buffers(struct ql3_adapter *qdev)
2718 {
2719         int i = 0;
2720         struct ql_rcv_buf_cb *lrg_buf_cb;
2721
2722         for (i = 0; i < qdev->num_large_buffers; i++) {
2723                 lrg_buf_cb = &qdev->lrg_buf[i];
2724                 if (lrg_buf_cb->skb) {
2725                         dev_kfree_skb(lrg_buf_cb->skb);
2726                         pci_unmap_single(qdev->pdev,
2727                                          dma_unmap_addr(lrg_buf_cb, mapaddr),
2728                                          dma_unmap_len(lrg_buf_cb, maplen),
2729                                          PCI_DMA_FROMDEVICE);
2730                         memset(lrg_buf_cb, 0, sizeof(struct ql_rcv_buf_cb));
2731                 } else {
2732                         break;
2733                 }
2734         }
2735 }
2736
2737 static void ql_init_large_buffers(struct ql3_adapter *qdev)
2738 {
2739         int i;
2740         struct ql_rcv_buf_cb *lrg_buf_cb;
2741         struct bufq_addr_element *buf_addr_ele = qdev->lrg_buf_q_virt_addr;
2742
2743         for (i = 0; i < qdev->num_large_buffers; i++) {
2744                 lrg_buf_cb = &qdev->lrg_buf[i];
2745                 buf_addr_ele->addr_high = lrg_buf_cb->buf_phy_addr_high;
2746                 buf_addr_ele->addr_low = lrg_buf_cb->buf_phy_addr_low;
2747                 buf_addr_ele++;
2748         }
2749         qdev->lrg_buf_index = 0;
2750         qdev->lrg_buf_skb_check = 0;
2751 }
2752
2753 static int ql_alloc_large_buffers(struct ql3_adapter *qdev)
2754 {
2755         int i;
2756         struct ql_rcv_buf_cb *lrg_buf_cb;
2757         struct sk_buff *skb;
2758         dma_addr_t map;
2759         int err;
2760
2761         for (i = 0; i < qdev->num_large_buffers; i++) {
2762                 skb = netdev_alloc_skb(qdev->ndev,
2763                                        qdev->lrg_buffer_len);
2764                 if (unlikely(!skb)) {
2765                         /* Better luck next round */
2766                         netdev_err(qdev->ndev,
2767                                    "large buff alloc failed for %d bytes at index %d\n",
2768                                    qdev->lrg_buffer_len * 2, i);
2769                         ql_free_large_buffers(qdev);
2770                         return -ENOMEM;
2771                 } else {
2772
2773                         lrg_buf_cb = &qdev->lrg_buf[i];
2774                         memset(lrg_buf_cb, 0, sizeof(struct ql_rcv_buf_cb));
2775                         lrg_buf_cb->index = i;
2776                         lrg_buf_cb->skb = skb;
2777                         /*
2778                          * We save some space to copy the ethhdr from first
2779                          * buffer
2780                          */
2781                         skb_reserve(skb, QL_HEADER_SPACE);
2782                         map = pci_map_single(qdev->pdev,
2783                                              skb->data,
2784                                              qdev->lrg_buffer_len -
2785                                              QL_HEADER_SPACE,
2786                                              PCI_DMA_FROMDEVICE);
2787
2788                         err = pci_dma_mapping_error(qdev->pdev, map);
2789                         if (err) {
2790                                 netdev_err(qdev->ndev,
2791                                            "PCI mapping failed with error: %d\n",
2792                                            err);
2793                                 ql_free_large_buffers(qdev);
2794                                 return -ENOMEM;
2795                         }
2796
2797                         dma_unmap_addr_set(lrg_buf_cb, mapaddr, map);
2798                         dma_unmap_len_set(lrg_buf_cb, maplen,
2799                                           qdev->lrg_buffer_len -
2800                                           QL_HEADER_SPACE);
2801                         lrg_buf_cb->buf_phy_addr_low =
2802                             cpu_to_le32(LS_64BITS(map));
2803                         lrg_buf_cb->buf_phy_addr_high =
2804                             cpu_to_le32(MS_64BITS(map));
2805                 }
2806         }
2807         return 0;
2808 }
2809
2810 static void ql_free_send_free_list(struct ql3_adapter *qdev)
2811 {
2812         struct ql_tx_buf_cb *tx_cb;
2813         int i;
2814
2815         tx_cb = &qdev->tx_buf[0];
2816         for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
2817                 kfree(tx_cb->oal);
2818                 tx_cb->oal = NULL;
2819                 tx_cb++;
2820         }
2821 }
2822
2823 static int ql_create_send_free_list(struct ql3_adapter *qdev)
2824 {
2825         struct ql_tx_buf_cb *tx_cb;
2826         int i;
2827         struct ob_mac_iocb_req *req_q_curr = qdev->req_q_virt_addr;
2828
2829         /* Create free list of transmit buffers */
2830         for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
2831
2832                 tx_cb = &qdev->tx_buf[i];
2833                 tx_cb->skb = NULL;
2834                 tx_cb->queue_entry = req_q_curr;
2835                 req_q_curr++;
2836                 tx_cb->oal = kmalloc(512, GFP_KERNEL);
2837                 if (tx_cb->oal == NULL)
2838                         return -1;
2839         }
2840         return 0;
2841 }
2842
2843 static int ql_alloc_mem_resources(struct ql3_adapter *qdev)
2844 {
2845         if (qdev->ndev->mtu == NORMAL_MTU_SIZE) {
2846                 qdev->num_lbufq_entries = NUM_LBUFQ_ENTRIES;
2847                 qdev->lrg_buffer_len = NORMAL_MTU_SIZE;
2848         } else if (qdev->ndev->mtu == JUMBO_MTU_SIZE) {
2849                 /*
2850                  * Bigger buffers, so less of them.
2851                  */
2852                 qdev->num_lbufq_entries = JUMBO_NUM_LBUFQ_ENTRIES;
2853                 qdev->lrg_buffer_len = JUMBO_MTU_SIZE;
2854         } else {
2855                 netdev_err(qdev->ndev, "Invalid mtu size: %d.  Only %d and %d are accepted.\n",
2856                            qdev->ndev->mtu, NORMAL_MTU_SIZE, JUMBO_MTU_SIZE);
2857                 return -ENOMEM;
2858         }
2859         qdev->num_large_buffers =
2860                 qdev->num_lbufq_entries * QL_ADDR_ELE_PER_BUFQ_ENTRY;
2861         qdev->lrg_buffer_len += VLAN_ETH_HLEN + VLAN_ID_LEN + QL_HEADER_SPACE;
2862         qdev->max_frame_size =
2863                 (qdev->lrg_buffer_len - QL_HEADER_SPACE) + ETHERNET_CRC_SIZE;
2864
2865         /*
2866          * First allocate a page of shared memory and use it for shadow
2867          * locations of Network Request Queue Consumer Address Register and
2868          * Network Completion Queue Producer Index Register
2869          */
2870         qdev->shadow_reg_virt_addr =
2871                 pci_alloc_consistent(qdev->pdev,
2872                                      PAGE_SIZE, &qdev->shadow_reg_phy_addr);
2873
2874         if (qdev->shadow_reg_virt_addr != NULL) {
2875                 qdev->preq_consumer_index = (u16 *) qdev->shadow_reg_virt_addr;
2876                 qdev->req_consumer_index_phy_addr_high =
2877                         MS_64BITS(qdev->shadow_reg_phy_addr);
2878                 qdev->req_consumer_index_phy_addr_low =
2879                         LS_64BITS(qdev->shadow_reg_phy_addr);
2880
2881                 qdev->prsp_producer_index =
2882                         (__le32 *) (((u8 *) qdev->preq_consumer_index) + 8);
2883                 qdev->rsp_producer_index_phy_addr_high =
2884                         qdev->req_consumer_index_phy_addr_high;
2885                 qdev->rsp_producer_index_phy_addr_low =
2886                         qdev->req_consumer_index_phy_addr_low + 8;
2887         } else {
2888                 netdev_err(qdev->ndev, "shadowReg Alloc failed\n");
2889                 return -ENOMEM;
2890         }
2891
2892         if (ql_alloc_net_req_rsp_queues(qdev) != 0) {
2893                 netdev_err(qdev->ndev, "ql_alloc_net_req_rsp_queues failed\n");
2894                 goto err_req_rsp;
2895         }
2896
2897         if (ql_alloc_buffer_queues(qdev) != 0) {
2898                 netdev_err(qdev->ndev, "ql_alloc_buffer_queues failed\n");
2899                 goto err_buffer_queues;
2900         }
2901
2902         if (ql_alloc_small_buffers(qdev) != 0) {
2903                 netdev_err(qdev->ndev, "ql_alloc_small_buffers failed\n");
2904                 goto err_small_buffers;
2905         }
2906
2907         if (ql_alloc_large_buffers(qdev) != 0) {
2908                 netdev_err(qdev->ndev, "ql_alloc_large_buffers failed\n");
2909                 goto err_small_buffers;
2910         }
2911
2912         /* Initialize the large buffer queue. */
2913         ql_init_large_buffers(qdev);
2914         if (ql_create_send_free_list(qdev))
2915                 goto err_free_list;
2916
2917         qdev->rsp_current = qdev->rsp_q_virt_addr;
2918
2919         return 0;
2920 err_free_list:
2921         ql_free_send_free_list(qdev);
2922 err_small_buffers:
2923         ql_free_buffer_queues(qdev);
2924 err_buffer_queues:
2925         ql_free_net_req_rsp_queues(qdev);
2926 err_req_rsp:
2927         pci_free_consistent(qdev->pdev,
2928                             PAGE_SIZE,
2929                             qdev->shadow_reg_virt_addr,
2930                             qdev->shadow_reg_phy_addr);
2931
2932         return -ENOMEM;
2933 }
2934
2935 static void ql_free_mem_resources(struct ql3_adapter *qdev)
2936 {
2937         ql_free_send_free_list(qdev);
2938         ql_free_large_buffers(qdev);
2939         ql_free_small_buffers(qdev);
2940         ql_free_buffer_queues(qdev);
2941         ql_free_net_req_rsp_queues(qdev);
2942         if (qdev->shadow_reg_virt_addr != NULL) {
2943                 pci_free_consistent(qdev->pdev,
2944                                     PAGE_SIZE,
2945                                     qdev->shadow_reg_virt_addr,
2946                                     qdev->shadow_reg_phy_addr);
2947                 qdev->shadow_reg_virt_addr = NULL;
2948         }
2949 }
2950
2951 static int ql_init_misc_registers(struct ql3_adapter *qdev)
2952 {
2953         struct ql3xxx_local_ram_registers __iomem *local_ram =
2954             (void __iomem *)qdev->mem_map_registers;
2955
2956         if (ql_sem_spinlock(qdev, QL_DDR_RAM_SEM_MASK,
2957                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
2958                          2) << 4))
2959                 return -1;
2960
2961         ql_write_page2_reg(qdev,
2962                            &local_ram->bufletSize, qdev->nvram_data.bufletSize);
2963
2964         ql_write_page2_reg(qdev,
2965                            &local_ram->maxBufletCount,
2966                            qdev->nvram_data.bufletCount);
2967
2968         ql_write_page2_reg(qdev,
2969                            &local_ram->freeBufletThresholdLow,
2970                            (qdev->nvram_data.tcpWindowThreshold25 << 16) |
2971                            (qdev->nvram_data.tcpWindowThreshold0));
2972
2973         ql_write_page2_reg(qdev,
2974                            &local_ram->freeBufletThresholdHigh,
2975                            qdev->nvram_data.tcpWindowThreshold50);
2976
2977         ql_write_page2_reg(qdev,
2978                            &local_ram->ipHashTableBase,
2979                            (qdev->nvram_data.ipHashTableBaseHi << 16) |
2980                            qdev->nvram_data.ipHashTableBaseLo);
2981         ql_write_page2_reg(qdev,
2982                            &local_ram->ipHashTableCount,
2983                            qdev->nvram_data.ipHashTableSize);
2984         ql_write_page2_reg(qdev,
2985                            &local_ram->tcpHashTableBase,
2986                            (qdev->nvram_data.tcpHashTableBaseHi << 16) |
2987                            qdev->nvram_data.tcpHashTableBaseLo);
2988         ql_write_page2_reg(qdev,
2989                            &local_ram->tcpHashTableCount,
2990                            qdev->nvram_data.tcpHashTableSize);
2991         ql_write_page2_reg(qdev,
2992                            &local_ram->ncbBase,
2993                            (qdev->nvram_data.ncbTableBaseHi << 16) |
2994                            qdev->nvram_data.ncbTableBaseLo);
2995         ql_write_page2_reg(qdev,
2996                            &local_ram->maxNcbCount,
2997                            qdev->nvram_data.ncbTableSize);
2998         ql_write_page2_reg(qdev,
2999                            &local_ram->drbBase,
3000                            (qdev->nvram_data.drbTableBaseHi << 16) |
3001                            qdev->nvram_data.drbTableBaseLo);
3002         ql_write_page2_reg(qdev,
3003                            &local_ram->maxDrbCount,
3004                            qdev->nvram_data.drbTableSize);
3005         ql_sem_unlock(qdev, QL_DDR_RAM_SEM_MASK);
3006         return 0;
3007 }
3008
3009 static int ql_adapter_initialize(struct ql3_adapter *qdev)
3010 {
3011         u32 value;
3012         struct ql3xxx_port_registers __iomem *port_regs =
3013                 qdev->mem_map_registers;
3014         u32 *spir = &port_regs->CommonRegs.serialPortInterfaceReg;
3015         struct ql3xxx_host_memory_registers __iomem *hmem_regs =
3016                 (void __iomem *)port_regs;
3017         u32 delay = 10;
3018         int status = 0;
3019         unsigned long hw_flags = 0;
3020
3021         if (ql_mii_setup(qdev))
3022                 return -1;
3023
3024         /* Bring out PHY out of reset */
3025         ql_write_common_reg(qdev, spir,
3026                             (ISP_SERIAL_PORT_IF_WE |
3027                              (ISP_SERIAL_PORT_IF_WE << 16)));
3028         /* Give the PHY time to come out of reset. */
3029         mdelay(100);
3030         qdev->port_link_state = LS_DOWN;
3031         netif_carrier_off(qdev->ndev);
3032
3033         /* V2 chip fix for ARS-39168. */
3034         ql_write_common_reg(qdev, spir,
3035                             (ISP_SERIAL_PORT_IF_SDE |
3036                              (ISP_SERIAL_PORT_IF_SDE << 16)));
3037
3038         /* Request Queue Registers */
3039         *((u32 *)(qdev->preq_consumer_index)) = 0;
3040         atomic_set(&qdev->tx_count, NUM_REQ_Q_ENTRIES);
3041         qdev->req_producer_index = 0;
3042
3043         ql_write_page1_reg(qdev,
3044                            &hmem_regs->reqConsumerIndexAddrHigh,
3045                            qdev->req_consumer_index_phy_addr_high);
3046         ql_write_page1_reg(qdev,
3047                            &hmem_regs->reqConsumerIndexAddrLow,
3048                            qdev->req_consumer_index_phy_addr_low);
3049
3050         ql_write_page1_reg(qdev,
3051                            &hmem_regs->reqBaseAddrHigh,
3052                            MS_64BITS(qdev->req_q_phy_addr));
3053         ql_write_page1_reg(qdev,
3054                            &hmem_regs->reqBaseAddrLow,
3055                            LS_64BITS(qdev->req_q_phy_addr));
3056         ql_write_page1_reg(qdev, &hmem_regs->reqLength, NUM_REQ_Q_ENTRIES);
3057
3058         /* Response Queue Registers */
3059         *((__le16 *) (qdev->prsp_producer_index)) = 0;
3060         qdev->rsp_consumer_index = 0;
3061         qdev->rsp_current = qdev->rsp_q_virt_addr;
3062
3063         ql_write_page1_reg(qdev,
3064                            &hmem_regs->rspProducerIndexAddrHigh,
3065                            qdev->rsp_producer_index_phy_addr_high);
3066
3067         ql_write_page1_reg(qdev,
3068                            &hmem_regs->rspProducerIndexAddrLow,
3069                            qdev->rsp_producer_index_phy_addr_low);
3070
3071         ql_write_page1_reg(qdev,
3072                            &hmem_regs->rspBaseAddrHigh,
3073                            MS_64BITS(qdev->rsp_q_phy_addr));
3074
3075         ql_write_page1_reg(qdev,
3076                            &hmem_regs->rspBaseAddrLow,
3077                            LS_64BITS(qdev->rsp_q_phy_addr));
3078
3079         ql_write_page1_reg(qdev, &hmem_regs->rspLength, NUM_RSP_Q_ENTRIES);
3080
3081         /* Large Buffer Queue */
3082         ql_write_page1_reg(qdev,
3083                            &hmem_regs->rxLargeQBaseAddrHigh,
3084                            MS_64BITS(qdev->lrg_buf_q_phy_addr));
3085
3086         ql_write_page1_reg(qdev,
3087                            &hmem_regs->rxLargeQBaseAddrLow,
3088                            LS_64BITS(qdev->lrg_buf_q_phy_addr));
3089
3090         ql_write_page1_reg(qdev,
3091                            &hmem_regs->rxLargeQLength,
3092                            qdev->num_lbufq_entries);
3093
3094         ql_write_page1_reg(qdev,
3095                            &hmem_regs->rxLargeBufferLength,
3096                            qdev->lrg_buffer_len);
3097
3098         /* Small Buffer Queue */
3099         ql_write_page1_reg(qdev,
3100                            &hmem_regs->rxSmallQBaseAddrHigh,
3101                            MS_64BITS(qdev->small_buf_q_phy_addr));
3102
3103         ql_write_page1_reg(qdev,
3104                            &hmem_regs->rxSmallQBaseAddrLow,
3105                            LS_64BITS(qdev->small_buf_q_phy_addr));
3106
3107         ql_write_page1_reg(qdev, &hmem_regs->rxSmallQLength, NUM_SBUFQ_ENTRIES);
3108         ql_write_page1_reg(qdev,
3109                            &hmem_regs->rxSmallBufferLength,
3110                            QL_SMALL_BUFFER_SIZE);
3111
3112         qdev->small_buf_q_producer_index = NUM_SBUFQ_ENTRIES - 1;
3113         qdev->small_buf_release_cnt = 8;
3114         qdev->lrg_buf_q_producer_index = qdev->num_lbufq_entries - 1;
3115         qdev->lrg_buf_release_cnt = 8;
3116         qdev->lrg_buf_next_free =
3117             (struct bufq_addr_element *)qdev->lrg_buf_q_virt_addr;
3118         qdev->small_buf_index = 0;
3119         qdev->lrg_buf_index = 0;
3120         qdev->lrg_buf_free_count = 0;
3121         qdev->lrg_buf_free_head = NULL;
3122         qdev->lrg_buf_free_tail = NULL;
3123
3124         ql_write_common_reg(qdev,
3125                             &port_regs->CommonRegs.
3126                             rxSmallQProducerIndex,
3127                             qdev->small_buf_q_producer_index);
3128         ql_write_common_reg(qdev,
3129                             &port_regs->CommonRegs.
3130                             rxLargeQProducerIndex,
3131                             qdev->lrg_buf_q_producer_index);
3132
3133         /*
3134          * Find out if the chip has already been initialized.  If it has, then
3135          * we skip some of the initialization.
3136          */
3137         clear_bit(QL_LINK_MASTER, &qdev->flags);
3138         value = ql_read_page0_reg(qdev, &port_regs->portStatus);
3139         if ((value & PORT_STATUS_IC) == 0) {
3140
3141                 /* Chip has not been configured yet, so let it rip. */
3142                 if (ql_init_misc_registers(qdev)) {
3143                         status = -1;
3144                         goto out;
3145                 }
3146
3147                 value = qdev->nvram_data.tcpMaxWindowSize;
3148                 ql_write_page0_reg(qdev, &port_regs->tcpMaxWindow, value);
3149
3150                 value = (0xFFFF << 16) | qdev->nvram_data.extHwConfig;
3151
3152                 if (ql_sem_spinlock(qdev, QL_FLASH_SEM_MASK,
3153                                 (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index)
3154                                  * 2) << 13)) {
3155                         status = -1;
3156                         goto out;
3157                 }
3158                 ql_write_page0_reg(qdev, &port_regs->ExternalHWConfig, value);
3159                 ql_write_page0_reg(qdev, &port_regs->InternalChipConfig,
3160                                    (((INTERNAL_CHIP_SD | INTERNAL_CHIP_WE) <<
3161                                      16) | (INTERNAL_CHIP_SD |
3162                                             INTERNAL_CHIP_WE)));
3163                 ql_sem_unlock(qdev, QL_FLASH_SEM_MASK);
3164         }
3165
3166         if (qdev->mac_index)
3167                 ql_write_page0_reg(qdev,
3168                                    &port_regs->mac1MaxFrameLengthReg,
3169                                    qdev->max_frame_size);
3170         else
3171                 ql_write_page0_reg(qdev,
3172                                            &port_regs->mac0MaxFrameLengthReg,
3173                                            qdev->max_frame_size);
3174
3175         if (ql_sem_spinlock(qdev, QL_PHY_GIO_SEM_MASK,
3176                         (QL_RESOURCE_BITS_BASE_CODE | (qdev->mac_index) *
3177                          2) << 7)) {
3178                 status = -1;
3179                 goto out;
3180         }
3181
3182         PHY_Setup(qdev);
3183         ql_init_scan_mode(qdev);
3184         ql_get_phy_owner(qdev);
3185
3186         /* Load the MAC Configuration */
3187
3188         /* Program lower 32 bits of the MAC address */
3189         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3190                            (MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16));
3191         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3192                            ((qdev->ndev->dev_addr[2] << 24)
3193                             | (qdev->ndev->dev_addr[3] << 16)
3194                             | (qdev->ndev->dev_addr[4] << 8)
3195                             | qdev->ndev->dev_addr[5]));
3196
3197         /* Program top 16 bits of the MAC address */
3198         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3199                            ((MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16) | 1));
3200         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3201                            ((qdev->ndev->dev_addr[0] << 8)
3202                             | qdev->ndev->dev_addr[1]));
3203
3204         /* Enable Primary MAC */
3205         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3206                            ((MAC_ADDR_INDIRECT_PTR_REG_PE << 16) |
3207                             MAC_ADDR_INDIRECT_PTR_REG_PE));
3208
3209         /* Clear Primary and Secondary IP addresses */
3210         ql_write_page0_reg(qdev, &port_regs->ipAddrIndexReg,
3211                            ((IP_ADDR_INDEX_REG_MASK << 16) |
3212                             (qdev->mac_index << 2)));
3213         ql_write_page0_reg(qdev, &port_regs->ipAddrDataReg, 0);
3214
3215         ql_write_page0_reg(qdev, &port_regs->ipAddrIndexReg,
3216                            ((IP_ADDR_INDEX_REG_MASK << 16) |
3217                             ((qdev->mac_index << 2) + 1)));
3218         ql_write_page0_reg(qdev, &port_regs->ipAddrDataReg, 0);
3219
3220         ql_sem_unlock(qdev, QL_PHY_GIO_SEM_MASK);
3221
3222         /* Indicate Configuration Complete */
3223         ql_write_page0_reg(qdev,
3224                            &port_regs->portControl,
3225                            ((PORT_CONTROL_CC << 16) | PORT_CONTROL_CC));
3226
3227         do {
3228                 value = ql_read_page0_reg(qdev, &port_regs->portStatus);
3229                 if (value & PORT_STATUS_IC)
3230                         break;
3231                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3232                 msleep(500);
3233                 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3234         } while (--delay);
3235
3236         if (delay == 0) {
3237                 netdev_err(qdev->ndev, "Hw Initialization timeout\n");
3238                 status = -1;
3239                 goto out;
3240         }
3241
3242         /* Enable Ethernet Function */
3243         if (qdev->device_id == QL3032_DEVICE_ID) {
3244                 value =
3245                     (QL3032_PORT_CONTROL_EF | QL3032_PORT_CONTROL_KIE |
3246                      QL3032_PORT_CONTROL_EIv6 | QL3032_PORT_CONTROL_EIv4 |
3247                         QL3032_PORT_CONTROL_ET);
3248                 ql_write_page0_reg(qdev, &port_regs->functionControl,
3249                                    ((value << 16) | value));
3250         } else {
3251                 value =
3252                     (PORT_CONTROL_EF | PORT_CONTROL_ET | PORT_CONTROL_EI |
3253                      PORT_CONTROL_HH);
3254                 ql_write_page0_reg(qdev, &port_regs->portControl,
3255                                    ((value << 16) | value));
3256         }
3257
3258
3259 out:
3260         return status;
3261 }
3262
3263 /*
3264  * Caller holds hw_lock.
3265  */
3266 static int ql_adapter_reset(struct ql3_adapter *qdev)
3267 {
3268         struct ql3xxx_port_registers __iomem *port_regs =
3269                 qdev->mem_map_registers;
3270         int status = 0;
3271         u16 value;
3272         int max_wait_time;
3273
3274         set_bit(QL_RESET_ACTIVE, &qdev->flags);
3275         clear_bit(QL_RESET_DONE, &qdev->flags);
3276
3277         /*
3278          * Issue soft reset to chip.
3279          */
3280         netdev_printk(KERN_DEBUG, qdev->ndev, "Issue soft reset to chip\n");
3281         ql_write_common_reg(qdev,
3282                             &port_regs->CommonRegs.ispControlStatus,
3283                             ((ISP_CONTROL_SR << 16) | ISP_CONTROL_SR));
3284
3285         /* Wait 3 seconds for reset to complete. */
3286         netdev_printk(KERN_DEBUG, qdev->ndev,
3287                       "Wait 10 milliseconds for reset to complete\n");
3288
3289         /* Wait until the firmware tells us the Soft Reset is done */
3290         max_wait_time = 5;
3291         do {
3292                 value =
3293                     ql_read_common_reg(qdev,
3294                                        &port_regs->CommonRegs.ispControlStatus);
3295                 if ((value & ISP_CONTROL_SR) == 0)
3296                         break;
3297
3298                 ssleep(1);
3299         } while ((--max_wait_time));
3300
3301         /*
3302          * Also, make sure that the Network Reset Interrupt bit has been
3303          * cleared after the soft reset has taken place.
3304          */
3305         value =
3306             ql_read_common_reg(qdev, &port_regs->CommonRegs.ispControlStatus);
3307         if (value & ISP_CONTROL_RI) {
3308                 netdev_printk(KERN_DEBUG, qdev->ndev,
3309                               "clearing RI after reset\n");
3310                 ql_write_common_reg(qdev,
3311                                     &port_regs->CommonRegs.
3312                                     ispControlStatus,
3313                                     ((ISP_CONTROL_RI << 16) | ISP_CONTROL_RI));
3314         }
3315
3316         if (max_wait_time == 0) {
3317                 /* Issue Force Soft Reset */
3318                 ql_write_common_reg(qdev,
3319                                     &port_regs->CommonRegs.
3320                                     ispControlStatus,
3321                                     ((ISP_CONTROL_FSR << 16) |
3322                                      ISP_CONTROL_FSR));
3323                 /*
3324                  * Wait until the firmware tells us the Force Soft Reset is
3325                  * done
3326                  */
3327                 max_wait_time = 5;
3328                 do {
3329                         value = ql_read_common_reg(qdev,
3330                                                    &port_regs->CommonRegs.
3331                                                    ispControlStatus);
3332                         if ((value & ISP_CONTROL_FSR) == 0)
3333                                 break;
3334                         ssleep(1);
3335                 } while ((--max_wait_time));
3336         }
3337         if (max_wait_time == 0)
3338                 status = 1;
3339
3340         clear_bit(QL_RESET_ACTIVE, &qdev->flags);
3341         set_bit(QL_RESET_DONE, &qdev->flags);
3342         return status;
3343 }
3344
3345 static void ql_set_mac_info(struct ql3_adapter *qdev)
3346 {
3347         struct ql3xxx_port_registers __iomem *port_regs =
3348                 qdev->mem_map_registers;
3349         u32 value, port_status;
3350         u8 func_number;
3351
3352         /* Get the function number */
3353         value =
3354             ql_read_common_reg_l(qdev, &port_regs->CommonRegs.ispControlStatus);
3355         func_number = (u8) ((value >> 4) & OPCODE_FUNC_ID_MASK);
3356         port_status = ql_read_page0_reg(qdev, &port_regs->portStatus);
3357         switch (value & ISP_CONTROL_FN_MASK) {
3358         case ISP_CONTROL_FN0_NET:
3359                 qdev->mac_index = 0;
3360                 qdev->mac_ob_opcode = OUTBOUND_MAC_IOCB | func_number;
3361                 qdev->mb_bit_mask = FN0_MA_BITS_MASK;
3362                 qdev->PHYAddr = PORT0_PHY_ADDRESS;
3363                 if (port_status & PORT_STATUS_SM0)
3364                         set_bit(QL_LINK_OPTICAL, &qdev->flags);
3365                 else
3366                         clear_bit(QL_LINK_OPTICAL, &qdev->flags);
3367                 break;
3368
3369         case ISP_CONTROL_FN1_NET:
3370                 qdev->mac_index = 1;
3371                 qdev->mac_ob_opcode = OUTBOUND_MAC_IOCB | func_number;
3372                 qdev->mb_bit_mask = FN1_MA_BITS_MASK;
3373                 qdev->PHYAddr = PORT1_PHY_ADDRESS;
3374                 if (port_status & PORT_STATUS_SM1)
3375                         set_bit(QL_LINK_OPTICAL, &qdev->flags);
3376                 else
3377                         clear_bit(QL_LINK_OPTICAL, &qdev->flags);
3378                 break;
3379
3380         case ISP_CONTROL_FN0_SCSI:
3381         case ISP_CONTROL_FN1_SCSI:
3382         default:
3383                 netdev_printk(KERN_DEBUG, qdev->ndev,
3384                               "Invalid function number, ispControlStatus = 0x%x\n",
3385                               value);
3386                 break;
3387         }
3388         qdev->numPorts = qdev->nvram_data.version_and_numPorts >> 8;
3389 }
3390
3391 static void ql_display_dev_info(struct net_device *ndev)
3392 {
3393         struct ql3_adapter *qdev = netdev_priv(ndev);
3394         struct pci_dev *pdev = qdev->pdev;
3395
3396         netdev_info(ndev,
3397                     "%s Adapter %d RevisionID %d found %s on PCI slot %d\n",
3398                     DRV_NAME, qdev->index, qdev->chip_rev_id,
3399                     qdev->device_id == QL3032_DEVICE_ID ? "QLA3032" : "QLA3022",
3400                     qdev->pci_slot);
3401         netdev_info(ndev, "%s Interface\n",
3402                 test_bit(QL_LINK_OPTICAL, &qdev->flags) ? "OPTICAL" : "COPPER");
3403
3404         /*
3405          * Print PCI bus width/type.
3406          */
3407         netdev_info(ndev, "Bus interface is %s %s\n",
3408                     ((qdev->pci_width == 64) ? "64-bit" : "32-bit"),
3409                     ((qdev->pci_x) ? "PCI-X" : "PCI"));
3410
3411         netdev_info(ndev, "mem  IO base address adjusted = 0x%p\n",
3412                     qdev->mem_map_registers);
3413         netdev_info(ndev, "Interrupt number = %d\n", pdev->irq);
3414
3415         netif_info(qdev, probe, ndev, "MAC address %pM\n", ndev->dev_addr);
3416 }
3417
3418 static int ql_adapter_down(struct ql3_adapter *qdev, int do_reset)
3419 {
3420         struct net_device *ndev = qdev->ndev;
3421         int retval = 0;
3422
3423         netif_stop_queue(ndev);
3424         netif_carrier_off(ndev);
3425
3426         clear_bit(QL_ADAPTER_UP, &qdev->flags);
3427         clear_bit(QL_LINK_MASTER, &qdev->flags);
3428
3429         ql_disable_interrupts(qdev);
3430
3431         free_irq(qdev->pdev->irq, ndev);
3432
3433         if (qdev->msi && test_bit(QL_MSI_ENABLED, &qdev->flags)) {
3434                 netdev_info(qdev->ndev, "calling pci_disable_msi()\n");
3435                 clear_bit(QL_MSI_ENABLED, &qdev->flags);
3436                 pci_disable_msi(qdev->pdev);
3437         }
3438
3439         del_timer_sync(&qdev->adapter_timer);
3440
3441         napi_disable(&qdev->napi);
3442
3443         if (do_reset) {
3444                 int soft_reset;
3445                 unsigned long hw_flags;
3446
3447                 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3448                 if (ql_wait_for_drvr_lock(qdev)) {
3449                         soft_reset = ql_adapter_reset(qdev);
3450                         if (soft_reset) {
3451                                 netdev_err(ndev, "ql_adapter_reset(%d) FAILED!\n",
3452                                            qdev->index);
3453                         }
3454                         netdev_err(ndev,
3455                                    "Releasing driver lock via chip reset\n");
3456                 } else {
3457                         netdev_err(ndev,
3458                                    "Could not acquire driver lock to do reset!\n");
3459                         retval = -1;
3460                 }
3461                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3462         }
3463         ql_free_mem_resources(qdev);
3464         return retval;
3465 }
3466
3467 static int ql_adapter_up(struct ql3_adapter *qdev)
3468 {
3469         struct net_device *ndev = qdev->ndev;
3470         int err;
3471         unsigned long irq_flags = IRQF_SAMPLE_RANDOM | IRQF_SHARED;
3472         unsigned long hw_flags;
3473
3474         if (ql_alloc_mem_resources(qdev)) {
3475                 netdev_err(ndev, "Unable to  allocate buffers\n");
3476                 return -ENOMEM;
3477         }
3478
3479         if (qdev->msi) {
3480                 if (pci_enable_msi(qdev->pdev)) {
3481                         netdev_err(ndev,
3482                                    "User requested MSI, but MSI failed to initialize.  Continuing without MSI.\n");
3483                         qdev->msi = 0;
3484                 } else {
3485                         netdev_info(ndev, "MSI Enabled...\n");
3486                         set_bit(QL_MSI_ENABLED, &qdev->flags);
3487                         irq_flags &= ~IRQF_SHARED;
3488                 }
3489         }
3490
3491         err = request_irq(qdev->pdev->irq, ql3xxx_isr,
3492                           irq_flags, ndev->name, ndev);
3493         if (err) {
3494                 netdev_err(ndev,
3495                            "Failed to reserve interrupt %d - already in use\n",
3496                            qdev->pdev->irq);
3497                 goto err_irq;
3498         }
3499
3500         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3501
3502         err = ql_wait_for_drvr_lock(qdev);
3503         if (err) {
3504                 err = ql_adapter_initialize(qdev);
3505                 if (err) {
3506                         netdev_err(ndev, "Unable to initialize adapter\n");
3507                         goto err_init;
3508                 }
3509                 netdev_err(ndev, "Releasing driver lock\n");
3510                 ql_sem_unlock(qdev, QL_DRVR_SEM_MASK);
3511         } else {
3512                 netdev_err(ndev, "Could not acquire driver lock\n");
3513                 goto err_lock;
3514         }
3515
3516         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3517
3518         set_bit(QL_ADAPTER_UP, &qdev->flags);
3519
3520         mod_timer(&qdev->adapter_timer, jiffies + HZ * 1);
3521
3522         napi_enable(&qdev->napi);
3523         ql_enable_interrupts(qdev);
3524         return 0;
3525
3526 err_init:
3527         ql_sem_unlock(qdev, QL_DRVR_SEM_MASK);
3528 err_lock:
3529         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3530         free_irq(qdev->pdev->irq, ndev);
3531 err_irq:
3532         if (qdev->msi && test_bit(QL_MSI_ENABLED, &qdev->flags)) {
3533                 netdev_info(ndev, "calling pci_disable_msi()\n");
3534                 clear_bit(QL_MSI_ENABLED, &qdev->flags);
3535                 pci_disable_msi(qdev->pdev);
3536         }
3537         return err;
3538 }
3539
3540 static int ql_cycle_adapter(struct ql3_adapter *qdev, int reset)
3541 {
3542         if (ql_adapter_down(qdev, reset) || ql_adapter_up(qdev)) {
3543                 netdev_err(qdev->ndev,
3544                            "Driver up/down cycle failed, closing device\n");
3545                 rtnl_lock();
3546                 dev_close(qdev->ndev);
3547                 rtnl_unlock();
3548                 return -1;
3549         }
3550         return 0;
3551 }
3552
3553 static int ql3xxx_close(struct net_device *ndev)
3554 {
3555         struct ql3_adapter *qdev = netdev_priv(ndev);
3556
3557         /*
3558          * Wait for device to recover from a reset.
3559          * (Rarely happens, but possible.)
3560          */
3561         while (!test_bit(QL_ADAPTER_UP, &qdev->flags))
3562                 msleep(50);
3563
3564         ql_adapter_down(qdev, QL_DO_RESET);
3565         return 0;
3566 }
3567
3568 static int ql3xxx_open(struct net_device *ndev)
3569 {
3570         struct ql3_adapter *qdev = netdev_priv(ndev);
3571         return ql_adapter_up(qdev);
3572 }
3573
3574 static int ql3xxx_set_mac_address(struct net_device *ndev, void *p)
3575 {
3576         struct ql3_adapter *qdev = netdev_priv(ndev);
3577         struct ql3xxx_port_registers __iomem *port_regs =
3578                         qdev->mem_map_registers;
3579         struct sockaddr *addr = p;
3580         unsigned long hw_flags;
3581
3582         if (netif_running(ndev))
3583                 return -EBUSY;
3584
3585         if (!is_valid_ether_addr(addr->sa_data))
3586                 return -EADDRNOTAVAIL;
3587
3588         memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
3589
3590         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3591         /* Program lower 32 bits of the MAC address */
3592         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3593                            (MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16));
3594         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3595                            ((ndev->dev_addr[2] << 24) | (ndev->
3596                                                          dev_addr[3] << 16) |
3597                             (ndev->dev_addr[4] << 8) | ndev->dev_addr[5]));
3598
3599         /* Program top 16 bits of the MAC address */
3600         ql_write_page0_reg(qdev, &port_regs->macAddrIndirectPtrReg,
3601                            ((MAC_ADDR_INDIRECT_PTR_REG_RP_MASK << 16) | 1));
3602         ql_write_page0_reg(qdev, &port_regs->macAddrDataReg,
3603                            ((ndev->dev_addr[0] << 8) | ndev->dev_addr[1]));
3604         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3605
3606         return 0;
3607 }
3608
3609 static void ql3xxx_tx_timeout(struct net_device *ndev)
3610 {
3611         struct ql3_adapter *qdev = netdev_priv(ndev);
3612
3613         netdev_err(ndev, "Resetting...\n");
3614         /*
3615          * Stop the queues, we've got a problem.
3616          */
3617         netif_stop_queue(ndev);
3618
3619         /*
3620          * Wake up the worker to process this event.
3621          */
3622         queue_delayed_work(qdev->workqueue, &qdev->tx_timeout_work, 0);
3623 }
3624
3625 static void ql_reset_work(struct work_struct *work)
3626 {
3627         struct ql3_adapter *qdev =
3628                 container_of(work, struct ql3_adapter, reset_work.work);
3629         struct net_device *ndev = qdev->ndev;
3630         u32 value;
3631         struct ql_tx_buf_cb *tx_cb;
3632         int max_wait_time, i;
3633         struct ql3xxx_port_registers __iomem *port_regs =
3634                 qdev->mem_map_registers;
3635         unsigned long hw_flags;
3636
3637         if (test_bit((QL_RESET_PER_SCSI | QL_RESET_START), &qdev->flags)) {
3638                 clear_bit(QL_LINK_MASTER, &qdev->flags);
3639
3640                 /*
3641                  * Loop through the active list and return the skb.
3642                  */
3643                 for (i = 0; i < NUM_REQ_Q_ENTRIES; i++) {
3644                         int j;
3645                         tx_cb = &qdev->tx_buf[i];
3646                         if (tx_cb->skb) {
3647                                 netdev_printk(KERN_DEBUG, ndev,
3648                                               "Freeing lost SKB\n");
3649                                 pci_unmap_single(qdev->pdev,
3650                                          dma_unmap_addr(&tx_cb->map[0],
3651                                                         mapaddr),
3652                                          dma_unmap_len(&tx_cb->map[0], maplen),
3653                                          PCI_DMA_TODEVICE);
3654                                 for (j = 1; j < tx_cb->seg_count; j++) {
3655                                         pci_unmap_page(qdev->pdev,
3656                                                dma_unmap_addr(&tx_cb->map[j],
3657                                                               mapaddr),
3658                                                dma_unmap_len(&tx_cb->map[j],
3659                                                              maplen),
3660                                                PCI_DMA_TODEVICE);
3661                                 }
3662                                 dev_kfree_skb(tx_cb->skb);
3663                                 tx_cb->skb = NULL;
3664                         }
3665                 }
3666
3667                 netdev_err(ndev, "Clearing NRI after reset\n");
3668                 spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3669                 ql_write_common_reg(qdev,
3670                                     &port_regs->CommonRegs.
3671                                     ispControlStatus,
3672                                     ((ISP_CONTROL_RI << 16) | ISP_CONTROL_RI));
3673                 /*
3674                  * Wait the for Soft Reset to Complete.
3675                  */
3676                 max_wait_time = 10;
3677                 do {
3678                         value = ql_read_common_reg(qdev,
3679                                                    &port_regs->CommonRegs.
3680
3681                                                    ispControlStatus);
3682                         if ((value & ISP_CONTROL_SR) == 0) {
3683                                 netdev_printk(KERN_DEBUG, ndev,
3684                                               "reset completed\n");
3685                                 break;
3686                         }
3687
3688                         if (value & ISP_CONTROL_RI) {
3689                                 netdev_printk(KERN_DEBUG, ndev,
3690                                               "clearing NRI after reset\n");
3691                                 ql_write_common_reg(qdev,
3692                                                     &port_regs->
3693                                                     CommonRegs.
3694                                                     ispControlStatus,
3695                                                     ((ISP_CONTROL_RI <<
3696                                                       16) | ISP_CONTROL_RI));
3697                         }
3698
3699                         spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3700                         ssleep(1);
3701                         spin_lock_irqsave(&qdev->hw_lock, hw_flags);
3702                 } while (--max_wait_time);
3703                 spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
3704
3705                 if (value & ISP_CONTROL_SR) {
3706
3707                         /*
3708                          * Set the reset flags and clear the board again.
3709                          * Nothing else to do...
3710                          */
3711                         netdev_err(ndev,
3712                                    "Timed out waiting for reset to complete\n");
3713                         netdev_err(ndev, "Do a reset\n");
3714                         clear_bit(QL_RESET_PER_SCSI, &qdev->flags);
3715                         clear_bit(QL_RESET_START, &qdev->flags);
3716                         ql_cycle_adapter(qdev, QL_DO_RESET);
3717                         return;
3718                 }
3719
3720                 clear_bit(QL_RESET_ACTIVE, &qdev->flags);
3721                 clear_bit(QL_RESET_PER_SCSI, &qdev->flags);
3722                 clear_bit(QL_RESET_START, &qdev->flags);
3723                 ql_cycle_adapter(qdev, QL_NO_RESET);
3724         }
3725 }
3726
3727 static void ql_tx_timeout_work(struct work_struct *work)
3728 {
3729         struct ql3_adapter *qdev =
3730                 container_of(work, struct ql3_adapter, tx_timeout_work.work);
3731
3732         ql_cycle_adapter(qdev, QL_DO_RESET);
3733 }
3734
3735 static void ql_get_board_info(struct ql3_adapter *qdev)
3736 {
3737         struct ql3xxx_port_registers __iomem *port_regs =
3738                 qdev->mem_map_registers;
3739         u32 value;
3740
3741         value = ql_read_page0_reg_l(qdev, &port_regs->portStatus);
3742
3743         qdev->chip_rev_id = ((value & PORT_STATUS_REV_ID_MASK) >> 12);
3744         if (value & PORT_STATUS_64)
3745                 qdev->pci_width = 64;
3746         else
3747                 qdev->pci_width = 32;
3748         if (value & PORT_STATUS_X)
3749                 qdev->pci_x = 1;
3750         else
3751                 qdev->pci_x = 0;
3752         qdev->pci_slot = (u8) PCI_SLOT(qdev->pdev->devfn);
3753 }
3754
3755 static void ql3xxx_timer(unsigned long ptr)
3756 {
3757         struct ql3_adapter *qdev = (struct ql3_adapter *)ptr;
3758         queue_delayed_work(qdev->workqueue, &qdev->link_state_work, 0);
3759 }
3760
3761 static const struct net_device_ops ql3xxx_netdev_ops = {
3762         .ndo_open               = ql3xxx_open,
3763         .ndo_start_xmit         = ql3xxx_send,
3764         .ndo_stop               = ql3xxx_close,
3765         .ndo_set_multicast_list = NULL, /* not allowed on NIC side */
3766         .ndo_change_mtu         = eth_change_mtu,
3767         .ndo_validate_addr      = eth_validate_addr,
3768         .ndo_set_mac_address    = ql3xxx_set_mac_address,
3769         .ndo_tx_timeout         = ql3xxx_tx_timeout,
3770 };
3771
3772 static int __devinit ql3xxx_probe(struct pci_dev *pdev,
3773                                   const struct pci_device_id *pci_entry)
3774 {
3775         struct net_device *ndev = NULL;
3776         struct ql3_adapter *qdev = NULL;
3777         static int cards_found;
3778         int uninitialized_var(pci_using_dac), err;
3779
3780         err = pci_enable_device(pdev);
3781         if (err) {
3782                 pr_err("%s cannot enable PCI device\n", pci_name(pdev));
3783                 goto err_out;
3784         }
3785
3786         err = pci_request_regions(pdev, DRV_NAME);
3787         if (err) {
3788                 pr_err("%s cannot obtain PCI resources\n", pci_name(pdev));
3789                 goto err_out_disable_pdev;
3790         }
3791
3792         pci_set_master(pdev);
3793
3794         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
3795                 pci_using_dac = 1;
3796                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3797         } else if (!(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
3798                 pci_using_dac = 0;
3799                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3800         }
3801
3802         if (err) {
3803                 pr_err("%s no usable DMA configuration\n", pci_name(pdev));
3804                 goto err_out_free_regions;
3805         }
3806
3807         ndev = alloc_etherdev(sizeof(struct ql3_adapter));
3808         if (!ndev) {
3809                 pr_err("%s could not alloc etherdev\n", pci_name(pdev));
3810                 err = -ENOMEM;
3811                 goto err_out_free_regions;
3812         }
3813
3814         SET_NETDEV_DEV(ndev, &pdev->dev);
3815
3816         pci_set_drvdata(pdev, ndev);
3817
3818         qdev = netdev_priv(ndev);
3819         qdev->index = cards_found;
3820         qdev->ndev = ndev;
3821         qdev->pdev = pdev;
3822         qdev->device_id = pci_entry->device;
3823         qdev->port_link_state = LS_DOWN;
3824         if (msi)
3825                 qdev->msi = 1;
3826
3827         qdev->msg_enable = netif_msg_init(debug, default_msg);
3828
3829         if (pci_using_dac)
3830                 ndev->features |= NETIF_F_HIGHDMA;
3831         if (qdev->device_id == QL3032_DEVICE_ID)
3832                 ndev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3833
3834         qdev->mem_map_registers = pci_ioremap_bar(pdev, 1);
3835         if (!qdev->mem_map_registers) {
3836                 pr_err("%s: cannot map device registers\n", pci_name(pdev));
3837                 err = -EIO;
3838                 goto err_out_free_ndev;
3839         }
3840
3841         spin_lock_init(&qdev->adapter_lock);
3842         spin_lock_init(&qdev->hw_lock);
3843
3844         /* Set driver entry points */
3845         ndev->netdev_ops = &ql3xxx_netdev_ops;
3846         SET_ETHTOOL_OPS(ndev, &ql3xxx_ethtool_ops);
3847         ndev->watchdog_timeo = 5 * HZ;
3848
3849         netif_napi_add(ndev, &qdev->napi, ql_poll, 64);
3850
3851         ndev->irq = pdev->irq;
3852
3853         /* make sure the EEPROM is good */
3854         if (ql_get_nvram_params(qdev)) {
3855                 pr_alert("%s: Adapter #%d, Invalid NVRAM parameters\n",
3856                          __func__, qdev->index);
3857                 err = -EIO;
3858                 goto err_out_iounmap;
3859         }
3860
3861         ql_set_mac_info(qdev);
3862
3863         /* Validate and set parameters */
3864         if (qdev->mac_index) {
3865                 ndev->mtu = qdev->nvram_data.macCfg_port1.etherMtu_mac ;
3866                 ql_set_mac_addr(ndev, qdev->nvram_data.funcCfg_fn2.macAddress);
3867         } else {
3868                 ndev->mtu = qdev->nvram_data.macCfg_port0.etherMtu_mac ;
3869                 ql_set_mac_addr(ndev, qdev->nvram_data.funcCfg_fn0.macAddress);
3870         }
3871         memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
3872
3873         ndev->tx_queue_len = NUM_REQ_Q_ENTRIES;
3874
3875         /* Record PCI bus information. */
3876         ql_get_board_info(qdev);
3877
3878         /*
3879          * Set the Maximum Memory Read Byte Count value. We do this to handle
3880          * jumbo frames.
3881          */
3882         if (qdev->pci_x)
3883                 pci_write_config_word(pdev, (int)0x4e, (u16) 0x0036);
3884
3885         err = register_netdev(ndev);
3886         if (err) {
3887                 pr_err("%s: cannot register net device\n", pci_name(pdev));
3888                 goto err_out_iounmap;
3889         }
3890
3891         /* we're going to reset, so assume we have no link for now */
3892
3893         netif_carrier_off(ndev);
3894         netif_stop_queue(ndev);
3895
3896         qdev->workqueue = create_singlethread_workqueue(ndev->name);
3897         INIT_DELAYED_WORK(&qdev->reset_work, ql_reset_work);
3898         INIT_DELAYED_WORK(&qdev->tx_timeout_work, ql_tx_timeout_work);
3899         INIT_DELAYED_WORK(&qdev->link_state_work, ql_link_state_machine_work);
3900
3901         init_timer(&qdev->adapter_timer);
3902         qdev->adapter_timer.function = ql3xxx_timer;
3903         qdev->adapter_timer.expires = jiffies + HZ * 2; /* two second delay */
3904         qdev->adapter_timer.data = (unsigned long)qdev;
3905
3906         if (!cards_found) {
3907                 pr_alert("%s\n", DRV_STRING);
3908                 pr_alert("Driver name: %s, Version: %s\n",
3909                          DRV_NAME, DRV_VERSION);
3910         }
3911         ql_display_dev_info(ndev);
3912
3913         cards_found++;
3914         return 0;
3915
3916 err_out_iounmap:
3917         iounmap(qdev->mem_map_registers);
3918 err_out_free_ndev:
3919         free_netdev(ndev);
3920 err_out_free_regions:
3921         pci_release_regions(pdev);
3922 err_out_disable_pdev:
3923         pci_disable_device(pdev);
3924         pci_set_drvdata(pdev, NULL);
3925 err_out:
3926         return err;
3927 }
3928
3929 static void __devexit ql3xxx_remove(struct pci_dev *pdev)
3930 {
3931         struct net_device *ndev = pci_get_drvdata(pdev);
3932         struct ql3_adapter *qdev = netdev_priv(ndev);
3933
3934         unregister_netdev(ndev);
3935
3936         ql_disable_interrupts(qdev);
3937
3938         if (qdev->workqueue) {
3939                 cancel_delayed_work(&qdev->reset_work);
3940                 cancel_delayed_work(&qdev->tx_timeout_work);
3941                 destroy_workqueue(qdev->workqueue);
3942                 qdev->workqueue = NULL;
3943         }
3944
3945         iounmap(qdev->mem_map_registers);
3946         pci_release_regions(pdev);
3947         pci_set_drvdata(pdev, NULL);
3948         free_netdev(ndev);
3949 }
3950
3951 static struct pci_driver ql3xxx_driver = {
3952
3953         .name = DRV_NAME,
3954         .id_table = ql3xxx_pci_tbl,
3955         .probe = ql3xxx_probe,
3956         .remove = __devexit_p(ql3xxx_remove),
3957 };
3958
3959 static int __init ql3xxx_init_module(void)
3960 {
3961         return pci_register_driver(&ql3xxx_driver);
3962 }
3963
3964 static void __exit ql3xxx_exit(void)
3965 {
3966         pci_unregister_driver(&ql3xxx_driver);
3967 }
3968
3969 module_init(ql3xxx_init_module);
3970 module_exit(ql3xxx_exit);