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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / qla2xxx / qla_isr.c
CommitLineData
1da177e4 1/*
fa90c54f 2 * QLogic Fibre Channel HBA Driver
01e58d8e 3 * Copyright (c) 2003-2008 QLogic Corporation
1da177e4 4 *
fa90c54f 5 * See LICENSE.qla2xxx for copyright and licensing details.
1da177e4
LT		 6 */
7#include "qla_def.h"
8
05236a05 9#include <linux/delay.h>
5a0e3ad6 10#include <linux/slab.h>
df7baa50 11#include <scsi/scsi_tcq.h>
9a069e19 12#include <scsi/scsi_bsg_fc.h>
df7baa50 13
1da177e4 14static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
73208dfd
AC		 15static void qla2x00_process_completed_request(struct scsi_qla_host *,
16 struct req_que *, uint32_t);
17static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
2afa19a9 18static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
73208dfd
AC		 19static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
20 sts_entry_t *);
9a853f71 21
1da177e4
LT		 22/**
23 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
24 * @irq:
25 * @dev_id: SCSI driver HA context
1da177e4
LT		 26 *
27 * Called by system whenever the host adapter generates an interrupt.
28 *
29 * Returns handled flag.
30 */
31irqreturn_t
7d12e780 32qla2100_intr_handler(int irq, void *dev_id)
1da177e4 33{
e315cd28
AC		 34 scsi_qla_host_t *vha;
35 struct qla_hw_data *ha;
3d71644c 36 struct device_reg_2xxx __iomem *reg;
1da177e4 37 int status;
1da177e4 38 unsigned long iter;
14e660e6 39 uint16_t hccr;
9a853f71 40 uint16_t mb[4];
e315cd28 41 struct rsp_que *rsp;
43fac4d9 42 unsigned long flags;
1da177e4 43
e315cd28
AC		 44 rsp = (struct rsp_que *) dev_id;
45 if (!rsp) {
1da177e4 46 printk(KERN_INFO
e315cd28 47 "%s(): NULL response queue pointer\n", __func__);
1da177e4
LT		 48 return (IRQ_NONE);
49 }
50
e315cd28 51 ha = rsp->hw;
3d71644c 52 reg = &ha->iobase->isp;
1da177e4
LT		 53 status = 0;
54
43fac4d9 55 spin_lock_irqsave(&ha->hardware_lock, flags);
2afa19a9 56 vha = pci_get_drvdata(ha->pdev);
1da177e4 57 for (iter = 50; iter--; ) {
14e660e6
SJ		 58 hccr = RD_REG_WORD(&reg->hccr);
59 if (hccr & HCCR_RISC_PAUSE) {
60 if (pci_channel_offline(ha->pdev))
61 break;
62
63 /*
64 * Issue a "HARD" reset in order for the RISC interrupt
65 * bit to be cleared. Schedule a big hammmer to get
66 * out of the RISC PAUSED state.
67 */
68 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
69 RD_REG_WORD(&reg->hccr);
70
e315cd28
AC		 71 ha->isp_ops->fw_dump(vha, 1);
72 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
14e660e6
SJ		 73 break;
74 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
1da177e4
LT		 75 break;
76
77 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
78 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
79 RD_REG_WORD(&reg->hccr);
80
81 /* Get mailbox data. */
9a853f71
AV		 82 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
83 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
e315cd28 84 qla2x00_mbx_completion(vha, mb[0]);
1da177e4 85 status |= MBX_INTERRUPT;
9a853f71
AV		 86 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
87 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
88 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
89 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
73208dfd 90 qla2x00_async_event(vha, rsp, mb);
1da177e4
LT		 91 } else {
92 /*EMPTY*/
93 DEBUG2(printk("scsi(%ld): Unrecognized "
9a853f71 94 "interrupt type (%d).\n",
e315cd28 95 vha->host_no, mb[0]));
1da177e4
LT		 96 }
97 /* Release mailbox registers. */
98 WRT_REG_WORD(&reg->semaphore, 0);
99 RD_REG_WORD(&reg->semaphore);
100 } else {
73208dfd 101 qla2x00_process_response_queue(rsp);
1da177e4
LT		 102
103 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
104 RD_REG_WORD(&reg->hccr);
105 }
106 }
43fac4d9 107 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4 108
1da177e4
LT		 109 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
110 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1da177e4 111 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
0b05a1f0 112 complete(&ha->mbx_intr_comp);
1da177e4
LT		 113 }
114
1da177e4
LT		 115 return (IRQ_HANDLED);
116}
117
118/**
119 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
120 * @irq:
121 * @dev_id: SCSI driver HA context
1da177e4
LT		 122 *
123 * Called by system whenever the host adapter generates an interrupt.
124 *
125 * Returns handled flag.
126 */
127irqreturn_t
7d12e780 128qla2300_intr_handler(int irq, void *dev_id)
1da177e4 129{
e315cd28 130 scsi_qla_host_t *vha;
3d71644c 131 struct device_reg_2xxx __iomem *reg;
1da177e4 132 int status;
1da177e4
LT		 133 unsigned long iter;
134 uint32_t stat;
1da177e4 135 uint16_t hccr;
9a853f71 136 uint16_t mb[4];
e315cd28
AC		 137 struct rsp_que *rsp;
138 struct qla_hw_data *ha;
43fac4d9 139 unsigned long flags;
1da177e4 140
e315cd28
AC		 141 rsp = (struct rsp_que *) dev_id;
142 if (!rsp) {
1da177e4 143 printk(KERN_INFO
e315cd28 144 "%s(): NULL response queue pointer\n", __func__);
1da177e4
LT		 145 return (IRQ_NONE);
146 }
147
e315cd28 148 ha = rsp->hw;
3d71644c 149 reg = &ha->iobase->isp;
1da177e4
LT		 150 status = 0;
151
43fac4d9 152 spin_lock_irqsave(&ha->hardware_lock, flags);
2afa19a9 153 vha = pci_get_drvdata(ha->pdev);
1da177e4
LT		 154 for (iter = 50; iter--; ) {
155 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
156 if (stat & HSR_RISC_PAUSED) {
85880801 157 if (unlikely(pci_channel_offline(ha->pdev)))
14e660e6
SJ		 158 break;
159
1da177e4
LT		 160 hccr = RD_REG_WORD(&reg->hccr);
161 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
07f31805
AV		 162 qla_printk(KERN_INFO, ha, "Parity error -- "
163 "HCCR=%x, Dumping firmware!\n", hccr);
1da177e4 164 else
07f31805
AV		 165 qla_printk(KERN_INFO, ha, "RISC paused -- "
166 "HCCR=%x, Dumping firmware!\n", hccr);
1da177e4
LT		 167
168 /*
169 * Issue a "HARD" reset in order for the RISC
170 * interrupt bit to be cleared. Schedule a big
171 * hammmer to get out of the RISC PAUSED state.
172 */
173 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
174 RD_REG_WORD(&reg->hccr);
07f31805 175
e315cd28
AC		 176 ha->isp_ops->fw_dump(vha, 1);
177 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1da177e4
LT		 178 break;
179 } else if ((stat & HSR_RISC_INT) == 0)
180 break;
181
1da177e4 182 switch (stat & 0xff) {
1da177e4
LT		 183 case 0x1:
184 case 0x2:
185 case 0x10:
186 case 0x11:
e315cd28 187 qla2x00_mbx_completion(vha, MSW(stat));
1da177e4
LT		 188 status |= MBX_INTERRUPT;
189
190 /* Release mailbox registers. */
191 WRT_REG_WORD(&reg->semaphore, 0);
192 break;
193 case 0x12:
9a853f71
AV		 194 mb[0] = MSW(stat);
195 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
196 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
197 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
73208dfd 198 qla2x00_async_event(vha, rsp, mb);
9a853f71
AV		 199 break;
200 case 0x13:
73208dfd 201 qla2x00_process_response_queue(rsp);
1da177e4
LT		 202 break;
203 case 0x15:
9a853f71
AV		 204 mb[0] = MBA_CMPLT_1_16BIT;
205 mb[1] = MSW(stat);
73208dfd 206 qla2x00_async_event(vha, rsp, mb);
1da177e4
LT		 207 break;
208 case 0x16:
9a853f71
AV		 209 mb[0] = MBA_SCSI_COMPLETION;
210 mb[1] = MSW(stat);
211 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
73208dfd 212 qla2x00_async_event(vha, rsp, mb);
1da177e4
LT		 213 break;
214 default:
215 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
9a853f71 216 "(%d).\n",
e315cd28 217 vha->host_no, stat & 0xff));
1da177e4
LT		 218 break;
219 }
220 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
221 RD_REG_WORD_RELAXED(&reg->hccr);
222 }
43fac4d9 223 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4 224
1da177e4
LT		 225 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
226 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1da177e4 227 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
0b05a1f0 228 complete(&ha->mbx_intr_comp);
1da177e4
LT		 229 }
230
1da177e4
LT		 231 return (IRQ_HANDLED);
232}
233
234/**
235 * qla2x00_mbx_completion() - Process mailbox command completions.
236 * @ha: SCSI driver HA context
237 * @mb0: Mailbox0 register
238 */
239static void
e315cd28 240qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1da177e4
LT		 241{
242 uint16_t cnt;
243 uint16_t __iomem *wptr;
e315cd28 244 struct qla_hw_data *ha = vha->hw;
3d71644c 245 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 246
247 /* Load return mailbox registers. */
248 ha->flags.mbox_int = 1;
249 ha->mailbox_out[0] = mb0;
250 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
251
252 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
fa2a1ce5 253 if (IS_QLA2200(ha) && cnt == 8)
1da177e4
LT		 254 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
255 if (cnt == 4 || cnt == 5)
256 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
257 else
258 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
fa2a1ce5 259
1da177e4
LT		 260 wptr++;
261 }
262
263 if (ha->mcp) {
264 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
e315cd28 265 __func__, vha->host_no, ha->mcp->mb[0]));
1da177e4
LT		 266 } else {
267 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
e315cd28 268 __func__, vha->host_no));
1da177e4
LT		 269 }
270}
271
8a659571
AV		 272static void
273qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
274{
275 static char *event[] =
276 { "Complete", "Request Notification", "Time Extension" };
277 int rval;
278 struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
279 uint16_t __iomem *wptr;
280 uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
281
282 /* Seed data -- mailbox1 -> mailbox7. */
283 wptr = (uint16_t __iomem *)&reg24->mailbox1;
284 for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
285 mb[cnt] = RD_REG_WORD(wptr);
286
287 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
288 "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
289 event[aen & 0xff],
290 mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
291
292 /* Acknowledgement needed? [Notify && non-zero timeout]. */
293 timeout = (descr >> 8) & 0xf;
294 if (aen != MBA_IDC_NOTIFY || !timeout)
295 return;
296
297 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
298 "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
299
300 rval = qla2x00_post_idc_ack_work(vha, mb);
301 if (rval != QLA_SUCCESS)
302 qla_printk(KERN_WARNING, vha->hw,
303 "IDC failed to post ACK.\n");
304}
305
1da177e4
LT		 306/**
307 * qla2x00_async_event() - Process aynchronous events.
308 * @ha: SCSI driver HA context
9a853f71 309 * @mb: Mailbox registers (0 - 3)
1da177e4 310 */
2c3dfe3f 311void
73208dfd 312qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
1da177e4 313{
9a853f71 314#define LS_UNKNOWN 2
3a03eb79 315 static char *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
1da177e4 316 char *link_speed;
1da177e4 317 uint16_t handle_cnt;
bdab23da 318 uint16_t cnt, mbx;
1da177e4 319 uint32_t handles[5];
e315cd28 320 struct qla_hw_data *ha = vha->hw;
3d71644c 321 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
bdab23da 322 struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
1da177e4
LT		 323 uint32_t rscn_entry, host_pid;
324 uint8_t rscn_queue_index;
4d4df193 325 unsigned long flags;
1da177e4
LT		 326
327 /* Setup to process RIO completion. */
328 handle_cnt = 0;
3a03eb79
AV		 329 if (IS_QLA81XX(ha))
330 goto skip_rio;
1da177e4
LT		 331 switch (mb[0]) {
332 case MBA_SCSI_COMPLETION:
9a853f71 333 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 334 handle_cnt = 1;
335 break;
336 case MBA_CMPLT_1_16BIT:
9a853f71 337 handles[0] = mb[1];
1da177e4
LT		 338 handle_cnt = 1;
339 mb[0] = MBA_SCSI_COMPLETION;
340 break;
341 case MBA_CMPLT_2_16BIT:
9a853f71
AV		 342 handles[0] = mb[1];
343 handles[1] = mb[2];
1da177e4
LT		 344 handle_cnt = 2;
345 mb[0] = MBA_SCSI_COMPLETION;
346 break;
347 case MBA_CMPLT_3_16BIT:
9a853f71
AV		 348 handles[0] = mb[1];
349 handles[1] = mb[2];
350 handles[2] = mb[3];
1da177e4
LT		 351 handle_cnt = 3;
352 mb[0] = MBA_SCSI_COMPLETION;
353 break;
354 case MBA_CMPLT_4_16BIT:
9a853f71
AV		 355 handles[0] = mb[1];
356 handles[1] = mb[2];
357 handles[2] = mb[3];
1da177e4
LT		 358 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
359 handle_cnt = 4;
360 mb[0] = MBA_SCSI_COMPLETION;
361 break;
362 case MBA_CMPLT_5_16BIT:
9a853f71
AV		 363 handles[0] = mb[1];
364 handles[1] = mb[2];
365 handles[2] = mb[3];
1da177e4
LT		 366 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
367 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
368 handle_cnt = 5;
369 mb[0] = MBA_SCSI_COMPLETION;
370 break;
371 case MBA_CMPLT_2_32BIT:
9a853f71 372 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 373 handles[1] = le32_to_cpu(
374 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
375 RD_MAILBOX_REG(ha, reg, 6));
376 handle_cnt = 2;
377 mb[0] = MBA_SCSI_COMPLETION;
378 break;
379 default:
380 break;
381 }
3a03eb79 382skip_rio:
1da177e4
LT		 383 switch (mb[0]) {
384 case MBA_SCSI_COMPLETION: /* Fast Post */
e315cd28 385 if (!vha->flags.online)
1da177e4
LT		 386 break;
387
388 for (cnt = 0; cnt < handle_cnt; cnt++)
73208dfd
AC		 389 qla2x00_process_completed_request(vha, rsp->req,
390 handles[cnt]);
1da177e4
LT		 391 break;
392
393 case MBA_RESET: /* Reset */
e315cd28
AC		 394 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
395 vha->host_no));
1da177e4 396
e315cd28 397 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
1da177e4
LT		 398 break;
399
400 case MBA_SYSTEM_ERR: /* System Error */
bdab23da 401 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
1da177e4 402 qla_printk(KERN_INFO, ha,
bdab23da
AV		 403 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
404 "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
1da177e4 405
e315cd28 406 ha->isp_ops->fw_dump(vha, 1);
1da177e4 407
e428924c 408 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 409 if (mb[1] == 0 && mb[2] == 0) {
410 qla_printk(KERN_ERR, ha,
411 "Unrecoverable Hardware Error: adapter "
412 "marked OFFLINE!\n");
e315cd28 413 vha->flags.online = 0;
9a853f71 414 } else
e315cd28 415 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
9a853f71 416 } else if (mb[1] == 0) {
1da177e4
LT		 417 qla_printk(KERN_INFO, ha,
418 "Unrecoverable Hardware Error: adapter marked "
419 "OFFLINE!\n");
e315cd28 420 vha->flags.online = 0;
1da177e4 421 } else
e315cd28 422 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1da177e4
LT		 423 break;
424
425 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
bdab23da
AV		 426 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
427 vha->host_no, mb[1]));
428 qla_printk(KERN_WARNING, ha,
429 "ISP Request Transfer Error (%x).\n", mb[1]);
1da177e4 430
e315cd28 431 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1da177e4
LT		 432 break;
433
434 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
435 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
e315cd28 436 vha->host_no));
1da177e4
LT		 437 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
438
e315cd28 439 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1da177e4
LT		 440 break;
441
442 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
443 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
e315cd28 444 vha->host_no));
1da177e4
LT		 445 break;
446
447 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
e315cd28 448 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
1da177e4 449 mb[1]));
cc3ef7bc 450 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
1da177e4 451
e315cd28
AC		 452 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
453 atomic_set(&vha->loop_state, LOOP_DOWN);
454 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
455 qla2x00_mark_all_devices_lost(vha, 1);
1da177e4
LT		 456 }
457
e315cd28
AC		 458 if (vha->vp_idx) {
459 atomic_set(&vha->vp_state, VP_FAILED);
460 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
2c3dfe3f
SJ		 461 }
462
e315cd28
AC		 463 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
464 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
1da177e4 465
e315cd28
AC		 466 vha->flags.management_server_logged_in = 0;
467 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
1da177e4
LT		 468 break;
469
470 case MBA_LOOP_UP: /* Loop Up Event */
1da177e4
LT		 471 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
472 link_speed = link_speeds[0];
d8b45213 473 ha->link_data_rate = PORT_SPEED_1GB;
1da177e4 474 } else {
9a853f71 475 link_speed = link_speeds[LS_UNKNOWN];
1da177e4
LT		 476 if (mb[1] < 5)
477 link_speed = link_speeds[mb[1]];
3a03eb79
AV		 478 else if (mb[1] == 0x13)
479 link_speed = link_speeds[5];
1da177e4
LT		 480 ha->link_data_rate = mb[1];
481 }
482
483 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
e315cd28 484 vha->host_no, link_speed));
1da177e4
LT		 485 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
486 link_speed);
487
e315cd28
AC		 488 vha->flags.management_server_logged_in = 0;
489 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
1da177e4
LT		 490 break;
491
492 case MBA_LOOP_DOWN: /* Loop Down Event */
bdab23da 493 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
4d4df193 494 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
bdab23da
AV		 495 "(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
496 mbx));
497 qla_printk(KERN_INFO, ha,
498 "LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
499 mbx);
1da177e4 500
e315cd28
AC		 501 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
502 atomic_set(&vha->loop_state, LOOP_DOWN);
503 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
504 vha->device_flags |= DFLG_NO_CABLE;
505 qla2x00_mark_all_devices_lost(vha, 1);
1da177e4
LT		 506 }
507
e315cd28
AC		 508 if (vha->vp_idx) {
509 atomic_set(&vha->vp_state, VP_FAILED);
510 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
2c3dfe3f
SJ		 511 }
512
e315cd28 513 vha->flags.management_server_logged_in = 0;
d8b45213 514 ha->link_data_rate = PORT_SPEED_UNKNOWN;
e315cd28 515 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
1da177e4
LT		 516 break;
517
518 case MBA_LIP_RESET: /* LIP reset occurred */
1da177e4 519 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
e315cd28 520 vha->host_no, mb[1]));
1da177e4 521 qla_printk(KERN_INFO, ha,
cc3ef7bc 522 "LIP reset occurred (%x).\n", mb[1]);
1da177e4 523
e315cd28
AC		 524 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
525 atomic_set(&vha->loop_state, LOOP_DOWN);
526 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
527 qla2x00_mark_all_devices_lost(vha, 1);
1da177e4
LT		 528 }
529
e315cd28
AC		 530 if (vha->vp_idx) {
531 atomic_set(&vha->vp_state, VP_FAILED);
532 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
2c3dfe3f
SJ		 533 }
534
e315cd28 535 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
1da177e4
LT		 536
537 ha->operating_mode = LOOP;
e315cd28
AC		 538 vha->flags.management_server_logged_in = 0;
539 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
1da177e4
LT		 540 break;
541
3a03eb79 542 /* case MBA_DCBX_COMPLETE: */
1da177e4
LT		 543 case MBA_POINT_TO_POINT: /* Point-to-Point */
544 if (IS_QLA2100(ha))
545 break;
546
3a03eb79
AV		 547 if (IS_QLA81XX(ha))
548 DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
549 "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
550 else
551 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
552 "received.\n", vha->host_no));
1da177e4
LT		 553
554 /*
555 * Until there's a transition from loop down to loop up, treat
556 * this as loop down only.
557 */
e315cd28
AC		 558 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
559 atomic_set(&vha->loop_state, LOOP_DOWN);
560 if (!atomic_read(&vha->loop_down_timer))
561 atomic_set(&vha->loop_down_timer,
1da177e4 562 LOOP_DOWN_TIME);
e315cd28 563 qla2x00_mark_all_devices_lost(vha, 1);
1da177e4
LT		 564 }
565
e315cd28
AC		 566 if (vha->vp_idx) {
567 atomic_set(&vha->vp_state, VP_FAILED);
568 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
2c3dfe3f
SJ		 569 }
570
e315cd28
AC		 571 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
572 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
573
574 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
575 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
4346b149
AV		 576
577 ha->flags.gpsc_supported = 1;
e315cd28 578 vha->flags.management_server_logged_in = 0;
1da177e4
LT		 579 break;
580
581 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
582 if (IS_QLA2100(ha))
583 break;
584
1da177e4
LT		 585 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
586 "received.\n",
e315cd28 587 vha->host_no));
1da177e4
LT		 588 qla_printk(KERN_INFO, ha,
589 "Configuration change detected: value=%x.\n", mb[1]);
590
e315cd28
AC		 591 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
592 atomic_set(&vha->loop_state, LOOP_DOWN);
593 if (!atomic_read(&vha->loop_down_timer))
594 atomic_set(&vha->loop_down_timer,
1da177e4 595 LOOP_DOWN_TIME);
e315cd28 596 qla2x00_mark_all_devices_lost(vha, 1);
1da177e4
LT		 597 }
598
e315cd28
AC		 599 if (vha->vp_idx) {
600 atomic_set(&vha->vp_state, VP_FAILED);
601 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
2c3dfe3f
SJ		 602 }
603
e315cd28
AC		 604 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
605 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1da177e4
LT		 606 break;
607
608 case MBA_PORT_UPDATE: /* Port database update */
55903b9d
SV		 609 /*
610 * Handle only global and vn-port update events
611 *
612 * Relevant inputs:
613 * mb[1] = N_Port handle of changed port
614 * OR 0xffff for global event
615 * mb[2] = New login state
616 * 7 = Port logged out
617 * mb[3] = LSB is vp_idx, 0xff = all vps
618 *
619 * Skip processing if:
620 * Event is global, vp_idx is NOT all vps,
621 * vp_idx does not match
622 * Event is not global, vp_idx does not match
623 */
624 if ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff)
625 || (mb[1] != 0xffff)) {
626 if (vha->vp_idx != (mb[3] & 0xff))
627 break;
628 }
73208dfd 629
9764ff88
AV		 630 /* Global event -- port logout or port unavailable. */
631 if (mb[1] == 0xffff && mb[2] == 0x7) {
632 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
633 vha->host_no));
634 DEBUG(printk(KERN_INFO
635 "scsi(%ld): Port unavailable %04x %04x %04x.\n",
636 vha->host_no, mb[1], mb[2], mb[3]));
637
638 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
639 atomic_set(&vha->loop_state, LOOP_DOWN);
640 atomic_set(&vha->loop_down_timer,
641 LOOP_DOWN_TIME);
642 vha->device_flags |= DFLG_NO_CABLE;
643 qla2x00_mark_all_devices_lost(vha, 1);
644 }
645
646 if (vha->vp_idx) {
647 atomic_set(&vha->vp_state, VP_FAILED);
648 fc_vport_set_state(vha->fc_vport,
649 FC_VPORT_FAILED);
faadc5e7 650 qla2x00_mark_all_devices_lost(vha, 1);
9764ff88
AV		 651 }
652
653 vha->flags.management_server_logged_in = 0;
654 ha->link_data_rate = PORT_SPEED_UNKNOWN;
655 break;
656 }
657
1da177e4 658 /*
cc3ef7bc 659 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1da177e4
LT		 660 * event etc. earlier indicating loop is down) then process
661 * it. Otherwise ignore it and Wait for RSCN to come in.
662 */
e315cd28
AC		 663 atomic_set(&vha->loop_down_timer, 0);
664 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
665 atomic_read(&vha->loop_state) != LOOP_DEAD) {
1da177e4 666 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
e315cd28 667 "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
9a853f71 668 mb[2], mb[3]));
1da177e4
LT		 669 break;
670 }
671
672 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
e315cd28 673 vha->host_no));
1da177e4 674 DEBUG(printk(KERN_INFO
9a853f71 675 "scsi(%ld): Port database changed %04x %04x %04x.\n",
e315cd28 676 vha->host_no, mb[1], mb[2], mb[3]));
1da177e4
LT		 677
678 /*
679 * Mark all devices as missing so we will login again.
680 */
e315cd28 681 atomic_set(&vha->loop_state, LOOP_UP);
1da177e4 682
e315cd28 683 qla2x00_mark_all_devices_lost(vha, 1);
1da177e4 684
e315cd28 685 vha->flags.rscn_queue_overflow = 1;
1da177e4 686
e315cd28
AC		 687 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
688 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1da177e4
LT		 689 break;
690
691 case MBA_RSCN_UPDATE: /* State Change Registration */
3c397400 692 /* Check if the Vport has issued a SCR */
e315cd28 693 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
3c397400
SJ		 694 break;
695 /* Only handle SCNs for our Vport index. */
0d6e61bc 696 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
3c397400 697 break;
0d6e61bc 698
1da177e4 699 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
e315cd28 700 vha->host_no));
1da177e4 701 DEBUG(printk(KERN_INFO
f4a8dbc7 702 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
e315cd28 703 vha->host_no, mb[1], mb[2], mb[3]));
1da177e4 704
59d72d87 705 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
e315cd28
AC		 706 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
707 | vha->d_id.b.al_pa;
1da177e4
LT		 708 if (rscn_entry == host_pid) {
709 DEBUG(printk(KERN_INFO
710 "scsi(%ld): Ignoring RSCN update to local host "
711 "port ID (%06x)\n",
e315cd28 712 vha->host_no, host_pid));
1da177e4
LT		 713 break;
714 }
715
59d72d87
RA		 716 /* Ignore reserved bits from RSCN-payload. */
717 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
e315cd28 718 rscn_queue_index = vha->rscn_in_ptr + 1;
1da177e4
LT		 719 if (rscn_queue_index == MAX_RSCN_COUNT)
720 rscn_queue_index = 0;
e315cd28
AC		 721 if (rscn_queue_index != vha->rscn_out_ptr) {
722 vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
723 vha->rscn_in_ptr = rscn_queue_index;
1da177e4 724 } else {
e315cd28 725 vha->flags.rscn_queue_overflow = 1;
1da177e4
LT		 726 }
727
e315cd28
AC		 728 atomic_set(&vha->loop_state, LOOP_UPDATE);
729 atomic_set(&vha->loop_down_timer, 0);
730 vha->flags.management_server_logged_in = 0;
1da177e4 731
e315cd28
AC		 732 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
733 set_bit(RSCN_UPDATE, &vha->dpc_flags);
734 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1da177e4
LT		 735 break;
736
737 /* case MBA_RIO_RESPONSE: */
738 case MBA_ZIO_RESPONSE:
3fd67cdf 739 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
e315cd28 740 vha->host_no));
1da177e4 741
e428924c 742 if (IS_FWI2_CAPABLE(ha))
2afa19a9 743 qla24xx_process_response_queue(vha, rsp);
4fdfefe5 744 else
73208dfd 745 qla2x00_process_response_queue(rsp);
1da177e4 746 break;
9a853f71
AV		 747
748 case MBA_DISCARD_RND_FRAME:
749 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
e315cd28 750 "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
9a853f71 751 break;
45ebeb56
AV		 752
753 case MBA_TRACE_NOTIFICATION:
754 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
e315cd28 755 vha->host_no, mb[1], mb[2]));
45ebeb56 756 break;
4d4df193
HK		 757
758 case MBA_ISP84XX_ALERT:
759 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
e315cd28 760 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
4d4df193
HK		 761
762 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
763 switch (mb[1]) {
764 case A84_PANIC_RECOVERY:
765 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
766 "%04x %04x\n", mb[2], mb[3]);
767 break;
768 case A84_OP_LOGIN_COMPLETE:
769 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
770 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
771 "firmware version %x\n", ha->cs84xx->op_fw_version));
772 break;
773 case A84_DIAG_LOGIN_COMPLETE:
774 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
775 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
776 "diagnostic firmware version %x\n",
777 ha->cs84xx->diag_fw_version));
778 break;
779 case A84_GOLD_LOGIN_COMPLETE:
780 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
781 ha->cs84xx->fw_update = 1;
782 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
783 "firmware version %x\n",
784 ha->cs84xx->gold_fw_version));
785 break;
786 default:
787 qla_printk(KERN_ERR, ha,
788 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
789 mb[1], mb[2], mb[3]);
790 }
791 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
792 break;
3a03eb79
AV		 793 case MBA_DCBX_START:
794 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
795 vha->host_no, mb[1], mb[2], mb[3]));
796 break;
797 case MBA_DCBX_PARAM_UPDATE:
798 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
799 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
800 break;
801 case MBA_FCF_CONF_ERR:
802 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
803 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
804 break;
805 case MBA_IDC_COMPLETE:
3a03eb79 806 case MBA_IDC_NOTIFY:
3a03eb79 807 case MBA_IDC_TIME_EXT:
8a659571 808 qla81xx_idc_event(vha, mb[0], mb[1]);
3a03eb79 809 break;
1da177e4 810 }
2c3dfe3f 811
e315cd28 812 if (!vha->vp_idx && ha->num_vhosts)
73208dfd 813 qla2x00_alert_all_vps(rsp, mb);
1da177e4
LT		 814}
815
816/**
817 * qla2x00_process_completed_request() - Process a Fast Post response.
818 * @ha: SCSI driver HA context
819 * @index: SRB index
820 */
821static void
73208dfd
AC		 822qla2x00_process_completed_request(struct scsi_qla_host *vha,
823 struct req_que *req, uint32_t index)
1da177e4
LT		 824{
825 srb_t *sp;
e315cd28 826 struct qla_hw_data *ha = vha->hw;
1da177e4
LT		 827
828 /* Validate handle. */
829 if (index >= MAX_OUTSTANDING_COMMANDS) {
830 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
e315cd28 831 vha->host_no, index));
1da177e4
LT		 832 qla_printk(KERN_WARNING, ha,
833 "Invalid SCSI completion handle %d.\n", index);
834
e315cd28 835 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1da177e4
LT		 836 return;
837 }
838
e315cd28 839 sp = req->outstanding_cmds[index];
1da177e4
LT		 840 if (sp) {
841 /* Free outstanding command slot. */
e315cd28 842 req->outstanding_cmds[index] = NULL;
1da177e4 843
1da177e4
LT		 844 /* Save ISP completion status */
845 sp->cmd->result = DID_OK << 16;
73208dfd 846 qla2x00_sp_compl(ha, sp);
1da177e4 847 } else {
2afa19a9
AC		 848 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
849 " handle(%d)\n", vha->host_no, req->id, index));
1da177e4
LT		 850 qla_printk(KERN_WARNING, ha,
851 "Invalid ISP SCSI completion handle\n");
852
e315cd28 853 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1da177e4
LT		 854 }
855}
856
ac280b67
AV		 857static srb_t *
858qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
859 struct req_que *req, void *iocb)
860{
861 struct qla_hw_data *ha = vha->hw;
862 sts_entry_t *pkt = iocb;
863 srb_t *sp = NULL;
864 uint16_t index;
865
866 index = LSW(pkt->handle);
867 if (index >= MAX_OUTSTANDING_COMMANDS) {
868 qla_printk(KERN_WARNING, ha,
869 "%s: Invalid completion handle (%x).\n", func, index);
870 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
871 goto done;
872 }
873 sp = req->outstanding_cmds[index];
874 if (!sp) {
875 qla_printk(KERN_WARNING, ha,
876 "%s: Invalid completion handle (%x) -- timed-out.\n", func,
877 index);
878 return sp;
879 }
880 if (sp->handle != index) {
881 qla_printk(KERN_WARNING, ha,
882 "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
883 index);
884 return NULL;
885 }
9a069e19 886
ac280b67 887 req->outstanding_cmds[index] = NULL;
9a069e19 888
ac280b67
AV		 889done:
890 return sp;
891}
892
893static void
894qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
895 struct mbx_entry *mbx)
896{
897 const char func[] = "MBX-IOCB";
898 const char *type;
899 struct qla_hw_data *ha = vha->hw;
900 fc_port_t *fcport;
901 srb_t *sp;
902 struct srb_logio *lio;
903 uint16_t data[2];
904
905 sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
906 if (!sp)
907 return;
908
909 type = NULL;
910 lio = sp->ctx;
911 switch (lio->ctx.type) {
912 case SRB_LOGIN_CMD:
913 type = "login";
914 break;
915 case SRB_LOGOUT_CMD:
916 type = "logout";
917 break;
918 default:
919 qla_printk(KERN_WARNING, ha,
920 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
921 lio->ctx.type);
922 return;
923 }
924
925 del_timer(&lio->ctx.timer);
926 fcport = sp->fcport;
927
928 data[0] = data[1] = 0;
929 if (mbx->entry_status) {
930 DEBUG2(printk(KERN_WARNING
931 "scsi(%ld:%x): Async-%s error entry - entry-status=%x "
932 "status=%x state-flag=%x status-flags=%x.\n",
933 fcport->vha->host_no, sp->handle, type,
934 mbx->entry_status, le16_to_cpu(mbx->status),
935 le16_to_cpu(mbx->state_flags),
936 le16_to_cpu(mbx->status_flags)));
937 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
938
939 data[0] = MBS_COMMAND_ERROR;
940 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
941 QLA_LOGIO_LOGIN_RETRIED: 0;
942 goto done_post_logio_done_work;
943 }
944
945 if (!mbx->status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
946 DEBUG2(printk(KERN_DEBUG
947 "scsi(%ld:%x): Async-%s complete - mbx1=%x.\n",
948 fcport->vha->host_no, sp->handle, type,
949 le16_to_cpu(mbx->mb1)));
950
951 data[0] = MBS_COMMAND_COMPLETE;
952 if (lio->ctx.type == SRB_LOGIN_CMD && le16_to_cpu(mbx->mb1) & BIT_1)
8474f3a0 953 fcport->flags |= FCF_FCP2_DEVICE;
ac280b67
AV		 954
955 goto done_post_logio_done_work;
956 }
957
958 data[0] = le16_to_cpu(mbx->mb0);
959 switch (data[0]) {
960 case MBS_PORT_ID_USED:
961 data[1] = le16_to_cpu(mbx->mb1);
962 break;
963 case MBS_LOOP_ID_USED:
964 break;
965 default:
966 data[0] = MBS_COMMAND_ERROR;
967 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
968 QLA_LOGIO_LOGIN_RETRIED: 0;
969 break;
970 }
971
972 DEBUG2(printk(KERN_WARNING
973 "scsi(%ld:%x): Async-%s failed - status=%x mb0=%x mb1=%x mb2=%x "
974 "mb6=%x mb7=%x.\n",
975 fcport->vha->host_no, sp->handle, type, le16_to_cpu(mbx->status),
976 le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
977 le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
978 le16_to_cpu(mbx->mb7)));
979
980done_post_logio_done_work:
981 lio->ctx.type == SRB_LOGIN_CMD ?
982 qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
983 qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
984
985 lio->ctx.free(sp);
986}
987
9a069e19
GM		 988static void
989qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
990 struct sts_entry_24xx *pkt, int iocb_type)
991{
992 const char func[] = "ELS_CT_IOCB";
993 const char *type;
994 struct qla_hw_data *ha = vha->hw;
995 srb_t *sp;
996 struct srb_bsg *sp_bsg;
997 struct fc_bsg_job *bsg_job;
998 uint16_t comp_status;
999 uint32_t fw_status[3];
1000 uint8_t* fw_sts_ptr;
1001
1002 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1003 if (!sp)
1004 return;
1005 sp_bsg = (struct srb_bsg*)sp->ctx;
1006 bsg_job = sp_bsg->bsg_job;
1007
1008 type = NULL;
1009 switch (sp_bsg->ctx.type) {
1010 case SRB_ELS_CMD_RPT:
1011 case SRB_ELS_CMD_HST:
1012 type = "els";
1013 break;
1014 case SRB_CT_CMD:
1015 type = "ct pass-through";
1016 break;
1017 default:
1018 qla_printk(KERN_WARNING, ha,
1019 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1020 sp_bsg->ctx.type);
1021 return;
1022 }
1023
1024 comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1025 fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1026 fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1027
1028 /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1029 * fc payload to the caller
1030 */
1031 bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1032 bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1033
1034 if (comp_status != CS_COMPLETE) {
1035 if (comp_status == CS_DATA_UNDERRUN) {
1036 bsg_job->reply->result = DID_OK << 16;
1037 bsg_job->reply->reply_payload_rcv_len =
1038 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);
1039
1040 DEBUG2(qla_printk(KERN_WARNING, ha,
1041 "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1042 "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1043 vha->host_no, sp->handle, type, comp_status, fw_status[1], fw_status[2],
1044 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count)));
1045 fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1046 memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1047 }
1048 else {
1049 DEBUG2(qla_printk(KERN_WARNING, ha,
1050 "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1051 "error subcode 1=0x%x error subcode 2=0x%x.\n",
1052 vha->host_no, sp->handle, type, comp_status,
1053 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1),
1054 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2)));
1055 bsg_job->reply->result = DID_ERROR << 16;
1056 bsg_job->reply->reply_payload_rcv_len = 0;
1057 fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1058 memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1059 }
1060 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1061 }
1062 else {
1063 bsg_job->reply->result = DID_OK << 16;;
1064 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1065 bsg_job->reply_len = 0;
1066 }
1067
1068 dma_unmap_sg(&ha->pdev->dev,
1069 bsg_job->request_payload.sg_list,
1070 bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1071 dma_unmap_sg(&ha->pdev->dev,
1072 bsg_job->reply_payload.sg_list,
1073 bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1074 if ((sp_bsg->ctx.type == SRB_ELS_CMD_HST) ||
1075 (sp_bsg->ctx.type == SRB_CT_CMD))
1076 kfree(sp->fcport);
1077 kfree(sp->ctx);
1078 mempool_free(sp, ha->srb_mempool);
1079 bsg_job->job_done(bsg_job);
1080}
1081
ac280b67
AV		 1082static void
1083qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1084 struct logio_entry_24xx *logio)
1085{
1086 const char func[] = "LOGIO-IOCB";
1087 const char *type;
1088 struct qla_hw_data *ha = vha->hw;
1089 fc_port_t *fcport;
1090 srb_t *sp;
1091 struct srb_logio *lio;
1092 uint16_t data[2];
1093 uint32_t iop[2];
1094
1095 sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1096 if (!sp)
1097 return;
1098
1099 type = NULL;
1100 lio = sp->ctx;
1101 switch (lio->ctx.type) {
1102 case SRB_LOGIN_CMD:
1103 type = "login";
1104 break;
1105 case SRB_LOGOUT_CMD:
1106 type = "logout";
1107 break;
1108 default:
1109 qla_printk(KERN_WARNING, ha,
1110 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1111 lio->ctx.type);
1112 return;
1113 }
1114
1115 del_timer(&lio->ctx.timer);
1116 fcport = sp->fcport;
1117
1118 data[0] = data[1] = 0;
1119 if (logio->entry_status) {
1120 DEBUG2(printk(KERN_WARNING
1121 "scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n",
1122 fcport->vha->host_no, sp->handle, type,
1123 logio->entry_status));
1124 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1125
1126 data[0] = MBS_COMMAND_ERROR;
1127 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1128 QLA_LOGIO_LOGIN_RETRIED: 0;
1129 goto done_post_logio_done_work;
1130 }
1131
1132 if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1133 DEBUG2(printk(KERN_DEBUG
1134 "scsi(%ld:%x): Async-%s complete - iop0=%x.\n",
1135 fcport->vha->host_no, sp->handle, type,
1136 le32_to_cpu(logio->io_parameter[0])));
1137
1138 data[0] = MBS_COMMAND_COMPLETE;
1139 if (lio->ctx.type == SRB_LOGOUT_CMD)
1140 goto done_post_logio_done_work;
1141
1142 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1143 if (iop[0] & BIT_4) {
1144 fcport->port_type = FCT_TARGET;
1145 if (iop[0] & BIT_8)
8474f3a0 1146 fcport->flags |= FCF_FCP2_DEVICE;
ac280b67
AV		 1147 }
1148 if (iop[0] & BIT_5)
1149 fcport->port_type = FCT_INITIATOR;
1150 if (logio->io_parameter[7] || logio->io_parameter[8])
1151 fcport->supported_classes |= FC_COS_CLASS2;
1152 if (logio->io_parameter[9] || logio->io_parameter[10])
1153 fcport->supported_classes |= FC_COS_CLASS3;
1154
1155 goto done_post_logio_done_work;
1156 }
1157
1158 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1159 iop[1] = le32_to_cpu(logio->io_parameter[1]);
1160 switch (iop[0]) {
1161 case LSC_SCODE_PORTID_USED:
1162 data[0] = MBS_PORT_ID_USED;
1163 data[1] = LSW(iop[1]);
1164 break;
1165 case LSC_SCODE_NPORT_USED:
1166 data[0] = MBS_LOOP_ID_USED;
1167 break;
1168 case LSC_SCODE_CMD_FAILED:
1169 if ((iop[1] & 0xff) == 0x05) {
1170 data[0] = MBS_NOT_LOGGED_IN;
1171 break;
1172 }
1173 /* Fall through. */
1174 default:
1175 data[0] = MBS_COMMAND_ERROR;
1176 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1177 QLA_LOGIO_LOGIN_RETRIED: 0;
1178 break;
1179 }
1180
1181 DEBUG2(printk(KERN_WARNING
1182 "scsi(%ld:%x): Async-%s failed - comp=%x iop0=%x iop1=%x.\n",
1183 fcport->vha->host_no, sp->handle, type,
1184 le16_to_cpu(logio->comp_status),
1185 le32_to_cpu(logio->io_parameter[0]),
1186 le32_to_cpu(logio->io_parameter[1])));
1187
1188done_post_logio_done_work:
1189 lio->ctx.type == SRB_LOGIN_CMD ?
1190 qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
1191 qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
1192
1193 lio->ctx.free(sp);
1194}
1195
1da177e4
LT		 1196/**
1197 * qla2x00_process_response_queue() - Process response queue entries.
1198 * @ha: SCSI driver HA context
1199 */
1200void
73208dfd 1201qla2x00_process_response_queue(struct rsp_que *rsp)
1da177e4 1202{
73208dfd
AC		 1203 struct scsi_qla_host *vha;
1204 struct qla_hw_data *ha = rsp->hw;
3d71644c 1205 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 1206 sts_entry_t *pkt;
1207 uint16_t handle_cnt;
1208 uint16_t cnt;
73208dfd 1209
2afa19a9 1210 vha = pci_get_drvdata(ha->pdev);
1da177e4 1211
e315cd28 1212 if (!vha->flags.online)
1da177e4
LT		 1213 return;
1214
e315cd28
AC		 1215 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1216 pkt = (sts_entry_t *)rsp->ring_ptr;
1da177e4 1217
e315cd28
AC		 1218 rsp->ring_index++;
1219 if (rsp->ring_index == rsp->length) {
1220 rsp->ring_index = 0;
1221 rsp->ring_ptr = rsp->ring;
1da177e4 1222 } else {
e315cd28 1223 rsp->ring_ptr++;
1da177e4
LT		 1224 }
1225
1226 if (pkt->entry_status != 0) {
1227 DEBUG3(printk(KERN_INFO
e315cd28 1228 "scsi(%ld): Process error entry.\n", vha->host_no));
1da177e4 1229
73208dfd 1230 qla2x00_error_entry(vha, rsp, pkt);
1da177e4
LT		 1231 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1232 wmb();
1233 continue;
1234 }
1235
1236 switch (pkt->entry_type) {
1237 case STATUS_TYPE:
73208dfd 1238 qla2x00_status_entry(vha, rsp, pkt);
1da177e4
LT		 1239 break;
1240 case STATUS_TYPE_21:
1241 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1242 for (cnt = 0; cnt < handle_cnt; cnt++) {
73208dfd 1243 qla2x00_process_completed_request(vha, rsp->req,
1da177e4
LT		 1244 ((sts21_entry_t *)pkt)->handle[cnt]);
1245 }
1246 break;
1247 case STATUS_TYPE_22:
1248 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1249 for (cnt = 0; cnt < handle_cnt; cnt++) {
73208dfd 1250 qla2x00_process_completed_request(vha, rsp->req,
1da177e4
LT		 1251 ((sts22_entry_t *)pkt)->handle[cnt]);
1252 }
1253 break;
1254 case STATUS_CONT_TYPE:
2afa19a9 1255 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1da177e4 1256 break;
ac280b67
AV		 1257 case MBX_IOCB_TYPE:
1258 qla2x00_mbx_iocb_entry(vha, rsp->req,
1259 (struct mbx_entry *)pkt);
1da177e4
LT		 1260 default:
1261 /* Type Not Supported. */
1262 DEBUG4(printk(KERN_WARNING
1263 "scsi(%ld): Received unknown response pkt type %x "
1264 "entry status=%x.\n",
e315cd28 1265 vha->host_no, pkt->entry_type, pkt->entry_status));
1da177e4
LT		 1266 break;
1267 }
1268 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1269 wmb();
1270 }
1271
1272 /* Adjust ring index */
e315cd28 1273 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1da177e4
LT		 1274}
1275
4733fcb1 1276static inline void
2afa19a9
AC		 1277qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
1278 struct rsp_que *rsp)
4733fcb1
AV		 1279{
1280 struct scsi_cmnd *cp = sp->cmd;
1281
1282 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1283 sense_len = SCSI_SENSE_BUFFERSIZE;
1284
4733fcb1
AV		 1285 sp->request_sense_length = sense_len;
1286 sp->request_sense_ptr = cp->sense_buffer;
1287 if (sp->request_sense_length > 32)
1288 sense_len = 32;
1289
1290 memcpy(cp->sense_buffer, sense_data, sense_len);
1291
1292 sp->request_sense_ptr += sense_len;
1293 sp->request_sense_length -= sense_len;
1294 if (sp->request_sense_length != 0)
2afa19a9 1295 rsp->status_srb = sp;
4733fcb1
AV		 1296
1297 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
e315cd28 1298 "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
19851f13
AV		 1299 cp->device->channel, cp->device->id, cp->device->lun, cp,
1300 cp->serial_number));
4733fcb1 1301 if (sense_len)
ddb9b126 1302 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
4733fcb1
AV		 1303}
1304
1da177e4
LT		 1305/**
1306 * qla2x00_status_entry() - Process a Status IOCB entry.
1307 * @ha: SCSI driver HA context
1308 * @pkt: Entry pointer
1309 */
1310static void
73208dfd 1311qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1da177e4 1312{
1da177e4 1313 srb_t *sp;
1da177e4
LT		 1314 fc_port_t *fcport;
1315 struct scsi_cmnd *cp;
9a853f71
AV		 1316 sts_entry_t *sts;
1317 struct sts_entry_24xx *sts24;
1da177e4
LT		 1318 uint16_t comp_status;
1319 uint16_t scsi_status;
1320 uint8_t lscsi_status;
1321 int32_t resid;
ed17c71b 1322 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
9a853f71 1323 uint8_t *rsp_info, *sense_data;
e315cd28 1324 struct qla_hw_data *ha = vha->hw;
2afa19a9
AC		 1325 uint32_t handle;
1326 uint16_t que;
1327 struct req_que *req;
9a853f71
AV		 1328
1329 sts = (sts_entry_t *) pkt;
1330 sts24 = (struct sts_entry_24xx *) pkt;
e428924c 1331 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 1332 comp_status = le16_to_cpu(sts24->comp_status);
1333 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1334 } else {
1335 comp_status = le16_to_cpu(sts->comp_status);
1336 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1337 }
2afa19a9
AC		 1338 handle = (uint32_t) LSW(sts->handle);
1339 que = MSW(sts->handle);
1340 req = ha->req_q_map[que];
1da177e4 1341 /* Fast path completion. */
9a853f71 1342 if (comp_status == CS_COMPLETE && scsi_status == 0) {
2afa19a9 1343 qla2x00_process_completed_request(vha, req, handle);
1da177e4
LT		 1344
1345 return;
1346 }
1347
1348 /* Validate handle. */
2afa19a9
AC		 1349 if (handle < MAX_OUTSTANDING_COMMANDS) {
1350 sp = req->outstanding_cmds[handle];
1351 req->outstanding_cmds[handle] = NULL;
1da177e4
LT		 1352 } else
1353 sp = NULL;
1354
1355 if (sp == NULL) {
1356 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
e315cd28 1357 vha->host_no));
1da177e4
LT		 1358 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
1359
e315cd28
AC		 1360 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1361 qla2xxx_wake_dpc(vha);
1da177e4
LT		 1362 return;
1363 }
1364 cp = sp->cmd;
1365 if (cp == NULL) {
1366 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
2afa19a9 1367 "pkt->handle=%d sp=%p.\n", vha->host_no, handle, sp));
1da177e4
LT		 1368 qla_printk(KERN_WARNING, ha,
1369 "Command is NULL: already returned to OS (sp=%p)\n", sp);
1370
1371 return;
1372 }
1373
9a853f71 1374 lscsi_status = scsi_status & STATUS_MASK;
1da177e4 1375
bdf79621 1376 fcport = sp->fcport;
1da177e4 1377
ed17c71b 1378 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
e428924c 1379 if (IS_FWI2_CAPABLE(ha)) {
0f00a206
LC		 1380 if (scsi_status & SS_SENSE_LEN_VALID)
1381 sense_len = le32_to_cpu(sts24->sense_len);
1382 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1383 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1384 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1385 resid_len = le32_to_cpu(sts24->rsp_residual_count);
1386 if (comp_status == CS_DATA_UNDERRUN)
1387 fw_resid_len = le32_to_cpu(sts24->residual_len);
9a853f71
AV		 1388 rsp_info = sts24->data;
1389 sense_data = sts24->data;
1390 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1391 } else {
0f00a206
LC		 1392 if (scsi_status & SS_SENSE_LEN_VALID)
1393 sense_len = le16_to_cpu(sts->req_sense_length);
1394 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1395 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
9a853f71
AV		 1396 resid_len = le32_to_cpu(sts->residual_length);
1397 rsp_info = sts->rsp_info;
1398 sense_data = sts->req_sense_data;
1399 }
1400
1da177e4
LT		 1401 /* Check for any FCP transport errors. */
1402 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
9a853f71 1403 /* Sense data lies beyond any FCP RESPONSE data. */
e428924c 1404 if (IS_FWI2_CAPABLE(ha))
9a853f71
AV		 1405 sense_data += rsp_info_len;
1406 if (rsp_info_len > 3 && rsp_info[3]) {
1da177e4
LT		 1407 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1408 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
e315cd28 1409 "retrying command\n", vha->host_no,
9a853f71
AV		 1410 cp->device->channel, cp->device->id,
1411 cp->device->lun, rsp_info_len, rsp_info[0],
1412 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1413 rsp_info[5], rsp_info[6], rsp_info[7]));
1da177e4
LT		 1414
1415 cp->result = DID_BUS_BUSY << 16;
73208dfd 1416 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1417 return;
1418 }
1419 }
1420
3e8ce320
AV		 1421 /* Check for overrun. */
1422 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1423 scsi_status & SS_RESIDUAL_OVER)
1424 comp_status = CS_DATA_OVERRUN;
1425
1da177e4
LT		 1426 /*
1427 * Based on Host and scsi status generate status code for Linux
1428 */
1429 switch (comp_status) {
1430 case CS_COMPLETE:
df7baa50 1431 case CS_QUEUE_FULL:
1da177e4
LT		 1432 if (scsi_status == 0) {
1433 cp->result = DID_OK << 16;
1434 break;
1435 }
1436 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
9a853f71 1437 resid = resid_len;
385d70b4 1438 scsi_set_resid(cp, resid);
0da69df1
AV		 1439
1440 if (!lscsi_status &&
385d70b4 1441 ((unsigned)(scsi_bufflen(cp) - resid) <
0da69df1
AV		 1442 cp->underflow)) {
1443 qla_printk(KERN_INFO, ha,
385d70b4
FT		 1444 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1445 "detected (%x of %x bytes)...returning "
e315cd28 1446 "error status.\n", vha->host_no,
385d70b4
FT		 1447 cp->device->channel, cp->device->id,
1448 cp->device->lun, resid,
1449 scsi_bufflen(cp));
0da69df1
AV		 1450
1451 cp->result = DID_ERROR << 16;
1452 break;
1453 }
1da177e4 1454 }
1da177e4
LT		 1455 cp->result = DID_OK << 16 | lscsi_status;
1456
df7baa50
AV		 1457 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1458 DEBUG2(printk(KERN_INFO
1459 "scsi(%ld): QUEUE FULL status detected "
e315cd28 1460 "0x%x-0x%x.\n", vha->host_no, comp_status,
df7baa50 1461 scsi_status));
df7baa50
AV		 1462 break;
1463 }
1da177e4
LT		 1464 if (lscsi_status != SS_CHECK_CONDITION)
1465 break;
1466
b80ca4f7 1467 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1da177e4
LT		 1468 if (!(scsi_status & SS_SENSE_LEN_VALID))
1469 break;
1470
2afa19a9 1471 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1da177e4
LT		 1472 break;
1473
1474 case CS_DATA_UNDERRUN:
0f00a206
LC		 1475 DEBUG2(printk(KERN_INFO
1476 "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x. "
1477 "resid=0x%x fw_resid=0x%x cdb=0x%x os_underflow=0x%x\n",
1478 vha->host_no, cp->device->id, cp->device->lun, comp_status,
1479 scsi_status, resid_len, fw_resid_len, cp->cmnd[0],
1480 cp->underflow));
1481
ed17c71b 1482 /* Use F/W calculated residual length. */
0f00a206
LC		 1483 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1484 scsi_set_resid(cp, resid);
1485 if (scsi_status & SS_RESIDUAL_UNDER) {
1486 if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1487 DEBUG2(printk(
1488 "scsi(%ld:%d:%d:%d) Dropped frame(s) "
1489 "detected (%x of %x bytes)...residual "
1490 "length mismatch...retrying command.\n",
1491 vha->host_no, cp->device->channel,
1492 cp->device->id, cp->device->lun, resid,
1493 scsi_bufflen(cp)));
1494
1495 cp->result = DID_ERROR << 16 | lscsi_status;
1496 break;
6acf8190 1497 }
ed17c71b 1498
0f00a206
LC		 1499 if (!lscsi_status &&
1500 ((unsigned)(scsi_bufflen(cp) - resid) <
1501 cp->underflow)) {
1502 qla_printk(KERN_INFO, ha,
1503 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1504 "detected (%x of %x bytes)...returning "
1505 "error status.\n", vha->host_no,
1506 cp->device->channel, cp->device->id,
1507 cp->device->lun, resid, scsi_bufflen(cp));
e038a1be 1508
0f00a206
LC		 1509 cp->result = DID_ERROR << 16;
1510 break;
1511 }
1512 } else if (!lscsi_status) {
1513 DEBUG2(printk(
1514 "scsi(%ld:%d:%d:%d) Dropped frame(s) detected "
1515 "(%x of %x bytes)...firmware reported underrun..."
1516 "retrying command.\n", vha->host_no,
1517 cp->device->channel, cp->device->id,
1518 cp->device->lun, resid, scsi_bufflen(cp)));
1519
1520 cp->result = DID_ERROR << 16;
1521 break;
1da177e4
LT		 1522 }
1523
0f00a206
LC		 1524 cp->result = DID_OK << 16 | lscsi_status;
1525
1da177e4 1526 /*
fa2a1ce5 1527 * Check to see if SCSI Status is non zero. If so report SCSI
1da177e4
LT		 1528 * Status.
1529 */
1530 if (lscsi_status != 0) {
ffec28a3
AV		 1531 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1532 DEBUG2(printk(KERN_INFO
1533 "scsi(%ld): QUEUE FULL status detected "
e315cd28 1534 "0x%x-0x%x.\n", vha->host_no, comp_status,
ffec28a3 1535 scsi_status));
ffec28a3
AV		 1536 break;
1537 }
1da177e4
LT		 1538 if (lscsi_status != SS_CHECK_CONDITION)
1539 break;
1540
b80ca4f7 1541 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1da177e4
LT		 1542 if (!(scsi_status & SS_SENSE_LEN_VALID))
1543 break;
1544
2afa19a9 1545 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1da177e4
LT		 1546 }
1547 break;
1548
1549 case CS_DATA_OVERRUN:
1550 DEBUG2(printk(KERN_INFO
1551 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
e315cd28 1552 vha->host_no, cp->device->id, cp->device->lun, comp_status,
9a853f71 1553 scsi_status));
1da177e4
LT		 1554 DEBUG2(printk(KERN_INFO
1555 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1556 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1557 cp->cmnd[4], cp->cmnd[5]));
1558 DEBUG2(printk(KERN_INFO
1559 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1560 "status!\n",
385d70b4 1561 cp->serial_number, scsi_bufflen(cp), resid_len));
1da177e4
LT		 1562
1563 cp->result = DID_ERROR << 16;
1564 break;
1565
1566 case CS_PORT_LOGGED_OUT:
1567 case CS_PORT_CONFIG_CHG:
1568 case CS_PORT_BUSY:
1569 case CS_INCOMPLETE:
1570 case CS_PORT_UNAVAILABLE:
1571 /*
1572 * If the port is in Target Down state, return all IOs for this
1573 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1574 * retry_queue.
1575 */
1da177e4
LT		 1576 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1577 "pid=%ld, compl status=0x%x, port state=0x%x\n",
e315cd28 1578 vha->host_no, cp->device->id, cp->device->lun,
9a853f71 1579 cp->serial_number, comp_status,
1da177e4
LT		 1580 atomic_read(&fcport->state)));
1581
056a4483
MC		 1582 /*
1583 * We are going to have the fc class block the rport
1584 * while we try to recover so instruct the mid layer
1585 * to requeue until the class decides how to handle this.
1586 */
1587 cp->result = DID_TRANSPORT_DISRUPTED << 16;
a7a28504 1588 if (atomic_read(&fcport->state) == FCS_ONLINE)
e315cd28 1589 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1da177e4
LT		 1590 break;
1591
1592 case CS_RESET:
1593 DEBUG2(printk(KERN_INFO
1594 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
e315cd28 1595 vha->host_no, comp_status, scsi_status));
1da177e4 1596
f4f051eb 1597 cp->result = DID_RESET << 16;
1da177e4
LT		 1598 break;
1599
1600 case CS_ABORTED:
fa2a1ce5 1601 /*
1da177e4
LT		 1602 * hv2.19.12 - DID_ABORT does not retry the request if we
1603 * aborted this request then abort otherwise it must be a
1604 * reset.
1605 */
1606 DEBUG2(printk(KERN_INFO
1607 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
e315cd28 1608 vha->host_no, comp_status, scsi_status));
1da177e4
LT		 1609
1610 cp->result = DID_RESET << 16;
1611 break;
1612
1613 case CS_TIMEOUT:
056a4483
MC		 1614 /*
1615 * We are going to have the fc class block the rport
1616 * while we try to recover so instruct the mid layer
1617 * to requeue until the class decides how to handle this.
1618 */
1619 cp->result = DID_TRANSPORT_DISRUPTED << 16;
9a853f71 1620
e428924c 1621 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 1622 DEBUG2(printk(KERN_INFO
1623 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
e315cd28 1624 "0x%x-0x%x\n", vha->host_no, cp->device->channel,
9a853f71
AV		 1625 cp->device->id, cp->device->lun, comp_status,
1626 scsi_status));
1627 break;
1628 }
1da177e4
LT		 1629 DEBUG2(printk(KERN_INFO
1630 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
e315cd28 1631 "sflags=%x.\n", vha->host_no, cp->device->channel,
9a853f71
AV		 1632 cp->device->id, cp->device->lun, comp_status, scsi_status,
1633 le16_to_cpu(sts->status_flags)));
1da177e4 1634
9a853f71
AV		 1635 /* Check to see if logout occurred. */
1636 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
e315cd28 1637 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1da177e4
LT		 1638 break;
1639
1da177e4
LT		 1640 default:
1641 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
e315cd28 1642 "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1da177e4
LT		 1643 qla_printk(KERN_INFO, ha,
1644 "Unknown status detected 0x%x-0x%x.\n",
1645 comp_status, scsi_status);
1646
1647 cp->result = DID_ERROR << 16;
1648 break;
1649 }
1650
1651 /* Place command on done queue. */
2afa19a9 1652 if (rsp->status_srb == NULL)
73208dfd 1653 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1654}
1655
1656/**
1657 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1658 * @ha: SCSI driver HA context
1659 * @pkt: Entry pointer
1660 *
1661 * Extended sense data.
1662 */
1663static void
2afa19a9 1664qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1da177e4
LT		 1665{
1666 uint8_t sense_sz = 0;
2afa19a9
AC		 1667 struct qla_hw_data *ha = rsp->hw;
1668 srb_t *sp = rsp->status_srb;
1da177e4
LT		 1669 struct scsi_cmnd *cp;
1670
1671 if (sp != NULL && sp->request_sense_length != 0) {
1672 cp = sp->cmd;
1673 if (cp == NULL) {
1674 DEBUG2(printk("%s(): Cmd already returned back to OS "
75bc4190 1675 "sp=%p.\n", __func__, sp));
1da177e4
LT		 1676 qla_printk(KERN_INFO, ha,
1677 "cmd is NULL: already returned to OS (sp=%p)\n",
fa2a1ce5 1678 sp);
1da177e4 1679
2afa19a9 1680 rsp->status_srb = NULL;
1da177e4
LT		 1681 return;
1682 }
1683
1684 if (sp->request_sense_length > sizeof(pkt->data)) {
1685 sense_sz = sizeof(pkt->data);
1686 } else {
1687 sense_sz = sp->request_sense_length;
1688 }
1689
1690 /* Move sense data. */
e428924c 1691 if (IS_FWI2_CAPABLE(ha))
9a853f71 1692 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1da177e4
LT		 1693 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1694 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1695
1696 sp->request_sense_ptr += sense_sz;
1697 sp->request_sense_length -= sense_sz;
1698
1699 /* Place command on done queue. */
1700 if (sp->request_sense_length == 0) {
2afa19a9 1701 rsp->status_srb = NULL;
73208dfd 1702 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1703 }
1704 }
1705}
1706
1707/**
1708 * qla2x00_error_entry() - Process an error entry.
1709 * @ha: SCSI driver HA context
1710 * @pkt: Entry pointer
1711 */
1712static void
73208dfd 1713qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1da177e4
LT		 1714{
1715 srb_t *sp;
e315cd28 1716 struct qla_hw_data *ha = vha->hw;
2afa19a9
AC		 1717 uint32_t handle = LSW(pkt->handle);
1718 uint16_t que = MSW(pkt->handle);
1719 struct req_que *req = ha->req_q_map[que];
1da177e4
LT		 1720#if defined(QL_DEBUG_LEVEL_2)
1721 if (pkt->entry_status & RF_INV_E_ORDER)
1722 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1723 else if (pkt->entry_status & RF_INV_E_COUNT)
1724 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1725 else if (pkt->entry_status & RF_INV_E_PARAM)
fa2a1ce5 1726 qla_printk(KERN_ERR, ha,
1da177e4
LT		 1727 "%s: Invalid Entry Parameter\n", __func__);
1728 else if (pkt->entry_status & RF_INV_E_TYPE)
1729 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1730 else if (pkt->entry_status & RF_BUSY)
1731 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1732 else
1733 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1734#endif
1735
1736 /* Validate handle. */
2afa19a9
AC		 1737 if (handle < MAX_OUTSTANDING_COMMANDS)
1738 sp = req->outstanding_cmds[handle];
1da177e4
LT		 1739 else
1740 sp = NULL;
1741
1742 if (sp) {
1743 /* Free outstanding command slot. */
2afa19a9 1744 req->outstanding_cmds[handle] = NULL;
354d6b21 1745
1da177e4
LT		 1746 /* Bad payload or header */
1747 if (pkt->entry_status &
1748 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1749 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1750 sp->cmd->result = DID_ERROR << 16;
1751 } else if (pkt->entry_status & RF_BUSY) {
1752 sp->cmd->result = DID_BUS_BUSY << 16;
1753 } else {
1754 sp->cmd->result = DID_ERROR << 16;
1755 }
73208dfd 1756 qla2x00_sp_compl(ha, sp);
1da177e4 1757
9a853f71
AV		 1758 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1759 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1da177e4 1760 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
e315cd28 1761 vha->host_no));
1da177e4
LT		 1762 qla_printk(KERN_WARNING, ha,
1763 "Error entry - invalid handle\n");
1764
e315cd28
AC		 1765 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1766 qla2xxx_wake_dpc(vha);
1da177e4
LT		 1767 }
1768}
1769
9a853f71
AV		 1770/**
1771 * qla24xx_mbx_completion() - Process mailbox command completions.
1772 * @ha: SCSI driver HA context
1773 * @mb0: Mailbox0 register
1774 */
1775static void
e315cd28 1776qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
9a853f71
AV		 1777{
1778 uint16_t cnt;
1779 uint16_t __iomem *wptr;
e315cd28 1780 struct qla_hw_data *ha = vha->hw;
9a853f71
AV		 1781 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1782
1783 /* Load return mailbox registers. */
1784 ha->flags.mbox_int = 1;
1785 ha->mailbox_out[0] = mb0;
1786 wptr = (uint16_t __iomem *)&reg->mailbox1;
1787
1788 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1789 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1790 wptr++;
1791 }
1792
1793 if (ha->mcp) {
1794 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
e315cd28 1795 __func__, vha->host_no, ha->mcp->mb[0]));
9a853f71
AV		 1796 } else {
1797 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
e315cd28 1798 __func__, vha->host_no));
9a853f71
AV		 1799 }
1800}
1801
1802/**
1803 * qla24xx_process_response_queue() - Process response queue entries.
1804 * @ha: SCSI driver HA context
1805 */
2afa19a9
AC		 1806void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1807 struct rsp_que *rsp)
9a853f71 1808{
9a853f71
AV		 1809 struct sts_entry_24xx *pkt;
1810
e315cd28 1811 if (!vha->flags.online)
9a853f71
AV		 1812 return;
1813
e315cd28
AC		 1814 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1815 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
9a853f71 1816
e315cd28
AC		 1817 rsp->ring_index++;
1818 if (rsp->ring_index == rsp->length) {
1819 rsp->ring_index = 0;
1820 rsp->ring_ptr = rsp->ring;
9a853f71 1821 } else {
e315cd28 1822 rsp->ring_ptr++;
9a853f71
AV		 1823 }
1824
1825 if (pkt->entry_status != 0) {
1826 DEBUG3(printk(KERN_INFO
e315cd28 1827 "scsi(%ld): Process error entry.\n", vha->host_no));
9a853f71 1828
73208dfd 1829 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
9a853f71
AV		 1830 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1831 wmb();
1832 continue;
1833 }
1834
1835 switch (pkt->entry_type) {
1836 case STATUS_TYPE:
73208dfd 1837 qla2x00_status_entry(vha, rsp, pkt);
9a853f71
AV		 1838 break;
1839 case STATUS_CONT_TYPE:
2afa19a9 1840 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
9a853f71 1841 break;
2c3dfe3f 1842 case VP_RPT_ID_IOCB_TYPE:
e315cd28 1843 qla24xx_report_id_acquisition(vha,
2c3dfe3f
SJ		 1844 (struct vp_rpt_id_entry_24xx *)pkt);
1845 break;
ac280b67
AV		 1846 case LOGINOUT_PORT_IOCB_TYPE:
1847 qla24xx_logio_entry(vha, rsp->req,
1848 (struct logio_entry_24xx *)pkt);
1849 break;
9a069e19
GM		 1850 case CT_IOCB_TYPE:
1851 qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1852 clear_bit(MBX_INTERRUPT, &vha->hw->mbx_cmd_flags);
1853 break;
1854 case ELS_IOCB_TYPE:
1855 qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
1856 break;
9a853f71
AV		 1857 default:
1858 /* Type Not Supported. */
1859 DEBUG4(printk(KERN_WARNING
1860 "scsi(%ld): Received unknown response pkt type %x "
1861 "entry status=%x.\n",
e315cd28 1862 vha->host_no, pkt->entry_type, pkt->entry_status));
9a853f71
AV		 1863 break;
1864 }
1865 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1866 wmb();
1867 }
1868
1869 /* Adjust ring index */
08029990 1870 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
9a853f71
AV		 1871}
1872
05236a05 1873static void
e315cd28 1874qla2xxx_check_risc_status(scsi_qla_host_t *vha)
05236a05
AV		 1875{
1876 int rval;
1877 uint32_t cnt;
e315cd28 1878 struct qla_hw_data *ha = vha->hw;
05236a05
AV		 1879 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1880
3a03eb79 1881 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
05236a05
AV		 1882 return;
1883
1884 rval = QLA_SUCCESS;
1885 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1886 RD_REG_DWORD(&reg->iobase_addr);
1887 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1888 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1889 rval == QLA_SUCCESS; cnt--) {
1890 if (cnt) {
1891 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1892 udelay(10);
1893 } else
1894 rval = QLA_FUNCTION_TIMEOUT;
1895 }
1896 if (rval == QLA_SUCCESS)
1897 goto next_test;
1898
1899 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1900 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1901 rval == QLA_SUCCESS; cnt--) {
1902 if (cnt) {
1903 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1904 udelay(10);
1905 } else
1906 rval = QLA_FUNCTION_TIMEOUT;
1907 }
1908 if (rval != QLA_SUCCESS)
1909 goto done;
1910
1911next_test:
1912 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1913 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1914
1915done:
1916 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1917 RD_REG_DWORD(&reg->iobase_window);
1918}
1919
9a853f71
AV		 1920/**
1921 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1922 * @irq:
1923 * @dev_id: SCSI driver HA context
9a853f71
AV		 1924 *
1925 * Called by system whenever the host adapter generates an interrupt.
1926 *
1927 * Returns handled flag.
1928 */
1929irqreturn_t
7d12e780 1930qla24xx_intr_handler(int irq, void *dev_id)
9a853f71 1931{
e315cd28
AC		 1932 scsi_qla_host_t *vha;
1933 struct qla_hw_data *ha;
9a853f71
AV		 1934 struct device_reg_24xx __iomem *reg;
1935 int status;
9a853f71
AV		 1936 unsigned long iter;
1937 uint32_t stat;
1938 uint32_t hccr;
1939 uint16_t mb[4];
e315cd28 1940 struct rsp_que *rsp;
43fac4d9 1941 unsigned long flags;
9a853f71 1942
e315cd28
AC		 1943 rsp = (struct rsp_que *) dev_id;
1944 if (!rsp) {
9a853f71 1945 printk(KERN_INFO
e315cd28 1946 "%s(): NULL response queue pointer\n", __func__);
9a853f71
AV		 1947 return IRQ_NONE;
1948 }
1949
e315cd28 1950 ha = rsp->hw;
9a853f71
AV		 1951 reg = &ha->iobase->isp24;
1952 status = 0;
1953
85880801
AV		 1954 if (unlikely(pci_channel_offline(ha->pdev)))
1955 return IRQ_HANDLED;
1956
43fac4d9 1957 spin_lock_irqsave(&ha->hardware_lock, flags);
2afa19a9 1958 vha = pci_get_drvdata(ha->pdev);
9a853f71
AV		 1959 for (iter = 50; iter--; ) {
1960 stat = RD_REG_DWORD(&reg->host_status);
1961 if (stat & HSRX_RISC_PAUSED) {
85880801 1962 if (unlikely(pci_channel_offline(ha->pdev)))
14e660e6
SJ		 1963 break;
1964
9a853f71
AV		 1965 hccr = RD_REG_DWORD(&reg->hccr);
1966
1967 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1968 "Dumping firmware!\n", hccr);
05236a05 1969
e315cd28 1970 qla2xxx_check_risc_status(vha);
05236a05 1971
e315cd28
AC		 1972 ha->isp_ops->fw_dump(vha, 1);
1973 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
9a853f71
AV		 1974 break;
1975 } else if ((stat & HSRX_RISC_INT) == 0)
1976 break;
1977
1978 switch (stat & 0xff) {
1979 case 0x1:
1980 case 0x2:
1981 case 0x10:
1982 case 0x11:
e315cd28 1983 qla24xx_mbx_completion(vha, MSW(stat));
9a853f71
AV		 1984 status |= MBX_INTERRUPT;
1985
1986 break;
1987 case 0x12:
1988 mb[0] = MSW(stat);
1989 mb[1] = RD_REG_WORD(&reg->mailbox1);
1990 mb[2] = RD_REG_WORD(&reg->mailbox2);
1991 mb[3] = RD_REG_WORD(&reg->mailbox3);
73208dfd 1992 qla2x00_async_event(vha, rsp, mb);
9a853f71
AV		 1993 break;
1994 case 0x13:
73208dfd 1995 case 0x14:
2afa19a9 1996 qla24xx_process_response_queue(vha, rsp);
9a853f71
AV		 1997 break;
1998 default:
1999 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2000 "(%d).\n",
e315cd28 2001 vha->host_no, stat & 0xff));
9a853f71
AV		 2002 break;
2003 }
2004 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2005 RD_REG_DWORD_RELAXED(&reg->hccr);
2006 }
43fac4d9 2007 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9a853f71
AV		 2008
2009 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2010 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
9a853f71 2011 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
0b05a1f0 2012 complete(&ha->mbx_intr_comp);
9a853f71
AV		 2013 }
2014
2015 return IRQ_HANDLED;
2016}
2017
a8488abe
AV		 2018static irqreturn_t
2019qla24xx_msix_rsp_q(int irq, void *dev_id)
2020{
e315cd28
AC		 2021 struct qla_hw_data *ha;
2022 struct rsp_que *rsp;
a8488abe 2023 struct device_reg_24xx __iomem *reg;
2afa19a9 2024 struct scsi_qla_host *vha;
0f19bc68 2025 unsigned long flags;
a8488abe 2026
e315cd28
AC		 2027 rsp = (struct rsp_que *) dev_id;
2028 if (!rsp) {
2029 printk(KERN_INFO
2030 "%s(): NULL response queue pointer\n", __func__);
2031 return IRQ_NONE;
2032 }
2033 ha = rsp->hw;
a8488abe
AV		 2034 reg = &ha->iobase->isp24;
2035
0f19bc68 2036 spin_lock_irqsave(&ha->hardware_lock, flags);
a8488abe 2037
a67093d4 2038 vha = pci_get_drvdata(ha->pdev);
2afa19a9 2039 qla24xx_process_response_queue(vha, rsp);
3155754a 2040 if (!ha->flags.disable_msix_handshake) {
eb94114b
AC		 2041 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2042 RD_REG_DWORD_RELAXED(&reg->hccr);
2043 }
0f19bc68 2044 spin_unlock_irqrestore(&ha->hardware_lock, flags);
a8488abe
AV		 2045
2046 return IRQ_HANDLED;
2047}
2048
68ca949c
AC		 2049static irqreturn_t
2050qla25xx_msix_rsp_q(int irq, void *dev_id)
2051{
2052 struct qla_hw_data *ha;
2053 struct rsp_que *rsp;
3155754a 2054 struct device_reg_24xx __iomem *reg;
0f19bc68 2055 unsigned long flags;
68ca949c
AC		 2056
2057 rsp = (struct rsp_que *) dev_id;
2058 if (!rsp) {
2059 printk(KERN_INFO
2060 "%s(): NULL response queue pointer\n", __func__);
2061 return IRQ_NONE;
2062 }
2063 ha = rsp->hw;
2064
3155754a
AC		 2065 /* Clear the interrupt, if enabled, for this response queue */
2066 if (rsp->options & ~BIT_6) {
2067 reg = &ha->iobase->isp24;
0f19bc68 2068 spin_lock_irqsave(&ha->hardware_lock, flags);
3155754a
AC		 2069 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2070 RD_REG_DWORD_RELAXED(&reg->hccr);
0f19bc68 2071 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3155754a 2072 }
68ca949c
AC		 2073 queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2074
2075 return IRQ_HANDLED;
2076}
2077
a8488abe
AV		 2078static irqreturn_t
2079qla24xx_msix_default(int irq, void *dev_id)
2080{
e315cd28
AC		 2081 scsi_qla_host_t *vha;
2082 struct qla_hw_data *ha;
2083 struct rsp_que *rsp;
a8488abe
AV		 2084 struct device_reg_24xx __iomem *reg;
2085 int status;
a8488abe
AV		 2086 uint32_t stat;
2087 uint32_t hccr;
2088 uint16_t mb[4];
0f19bc68 2089 unsigned long flags;
a8488abe 2090
e315cd28
AC		 2091 rsp = (struct rsp_que *) dev_id;
2092 if (!rsp) {
2093 DEBUG(printk(
2094 "%s(): NULL response queue pointer\n", __func__));
2095 return IRQ_NONE;
2096 }
2097 ha = rsp->hw;
a8488abe
AV		 2098 reg = &ha->iobase->isp24;
2099 status = 0;
2100
0f19bc68 2101 spin_lock_irqsave(&ha->hardware_lock, flags);
2afa19a9 2102 vha = pci_get_drvdata(ha->pdev);
87f27015 2103 do {
a8488abe
AV		 2104 stat = RD_REG_DWORD(&reg->host_status);
2105 if (stat & HSRX_RISC_PAUSED) {
85880801 2106 if (unlikely(pci_channel_offline(ha->pdev)))
14e660e6
SJ		 2107 break;
2108
a8488abe
AV		 2109 hccr = RD_REG_DWORD(&reg->hccr);
2110
2111 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2112 "Dumping firmware!\n", hccr);
05236a05 2113
e315cd28 2114 qla2xxx_check_risc_status(vha);
05236a05 2115
e315cd28
AC		 2116 ha->isp_ops->fw_dump(vha, 1);
2117 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
a8488abe
AV		 2118 break;
2119 } else if ((stat & HSRX_RISC_INT) == 0)
2120 break;
2121
2122 switch (stat & 0xff) {
2123 case 0x1:
2124 case 0x2:
2125 case 0x10:
2126 case 0x11:
e315cd28 2127 qla24xx_mbx_completion(vha, MSW(stat));
a8488abe
AV		 2128 status |= MBX_INTERRUPT;
2129
2130 break;
2131 case 0x12:
2132 mb[0] = MSW(stat);
2133 mb[1] = RD_REG_WORD(&reg->mailbox1);
2134 mb[2] = RD_REG_WORD(&reg->mailbox2);
2135 mb[3] = RD_REG_WORD(&reg->mailbox3);
73208dfd 2136 qla2x00_async_event(vha, rsp, mb);
a8488abe
AV		 2137 break;
2138 case 0x13:
73208dfd 2139 case 0x14:
2afa19a9 2140 qla24xx_process_response_queue(vha, rsp);
a8488abe
AV		 2141 break;
2142 default:
2143 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2144 "(%d).\n",
e315cd28 2145 vha->host_no, stat & 0xff));
a8488abe
AV		 2146 break;
2147 }
2148 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
87f27015 2149 } while (0);
0f19bc68 2150 spin_unlock_irqrestore(&ha->hardware_lock, flags);
a8488abe
AV		 2151
2152 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2153 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
a8488abe 2154 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
0b05a1f0 2155 complete(&ha->mbx_intr_comp);
a8488abe 2156 }
a8488abe
AV		 2157 return IRQ_HANDLED;
2158}
2159
2160/* Interrupt handling helpers. */
2161
2162struct qla_init_msix_entry {
a8488abe 2163 const char *name;
476834c2 2164 irq_handler_t handler;
a8488abe
AV		 2165};
2166
68ca949c 2167static struct qla_init_msix_entry msix_entries[3] = {
2afa19a9
AC		 2168 { "qla2xxx (default)", qla24xx_msix_default },
2169 { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
68ca949c 2170 { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
a8488abe
AV		 2171};
2172
2173static void
e315cd28 2174qla24xx_disable_msix(struct qla_hw_data *ha)
a8488abe
AV		 2175{
2176 int i;
2177 struct qla_msix_entry *qentry;
2178
73208dfd
AC		 2179 for (i = 0; i < ha->msix_count; i++) {
2180 qentry = &ha->msix_entries[i];
a8488abe 2181 if (qentry->have_irq)
73208dfd 2182 free_irq(qentry->vector, qentry->rsp);
a8488abe
AV		 2183 }
2184 pci_disable_msix(ha->pdev);
73208dfd
AC		 2185 kfree(ha->msix_entries);
2186 ha->msix_entries = NULL;
2187 ha->flags.msix_enabled = 0;
a8488abe
AV		 2188}
2189
2190static int
73208dfd 2191qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
a8488abe 2192{
ad038fa8 2193#define MIN_MSIX_COUNT 2
a8488abe 2194 int i, ret;
73208dfd 2195 struct msix_entry *entries;
a8488abe 2196 struct qla_msix_entry *qentry;
73208dfd
AC		 2197
2198 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2199 GFP_KERNEL);
2200 if (!entries)
2201 return -ENOMEM;
a8488abe 2202
73208dfd
AC		 2203 for (i = 0; i < ha->msix_count; i++)
2204 entries[i].entry = i;
a8488abe 2205
73208dfd 2206 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
a8488abe 2207 if (ret) {
ad038fa8
LC		 2208 if (ret < MIN_MSIX_COUNT)
2209 goto msix_failed;
2210
a8488abe 2211 qla_printk(KERN_WARNING, ha,
73208dfd
AC		 2212 "MSI-X: Failed to enable support -- %d/%d\n"
2213 " Retry with %d vectors\n", ha->msix_count, ret, ret);
2214 ha->msix_count = ret;
2215 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2216 if (ret) {
ad038fa8 2217msix_failed:
73208dfd
AC		 2218 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2219 " support, giving up -- %d/%d\n",
2220 ha->msix_count, ret);
2221 goto msix_out;
2222 }
2afa19a9 2223 ha->max_rsp_queues = ha->msix_count - 1;
73208dfd
AC		 2224 }
2225 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2226 ha->msix_count, GFP_KERNEL);
2227 if (!ha->msix_entries) {
2228 ret = -ENOMEM;
a8488abe
AV		 2229 goto msix_out;
2230 }
2231 ha->flags.msix_enabled = 1;
2232
73208dfd
AC		 2233 for (i = 0; i < ha->msix_count; i++) {
2234 qentry = &ha->msix_entries[i];
2235 qentry->vector = entries[i].vector;
2236 qentry->entry = entries[i].entry;
a8488abe 2237 qentry->have_irq = 0;
73208dfd 2238 qentry->rsp = NULL;
a8488abe
AV		 2239 }
2240
2afa19a9
AC		 2241 /* Enable MSI-X vectors for the base queue */
2242 for (i = 0; i < 2; i++) {
2243 qentry = &ha->msix_entries[i];
2244 ret = request_irq(qentry->vector, msix_entries[i].handler,
2245 0, msix_entries[i].name, rsp);
2246 if (ret) {
2247 qla_printk(KERN_WARNING, ha,
73208dfd
AC		 2248 "MSI-X: Unable to register handler -- %x/%d.\n",
2249 qentry->vector, ret);
2afa19a9
AC		 2250 qla24xx_disable_msix(ha);
2251 ha->mqenable = 0;
2252 goto msix_out;
2253 }
2254 qentry->have_irq = 1;
2255 qentry->rsp = rsp;
2256 rsp->msix = qentry;
73208dfd 2257 }
73208dfd
AC		 2258
2259 /* Enable MSI-X vector for response queue update for queue 0 */
2afa19a9 2260 if (ha->mqiobase && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
73208dfd 2261 ha->mqenable = 1;
73208dfd 2262
a8488abe 2263msix_out:
73208dfd 2264 kfree(entries);
a8488abe
AV		 2265 return ret;
2266}
2267
2268int
73208dfd 2269qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
a8488abe
AV		 2270{
2271 int ret;
963b0fdd 2272 device_reg_t __iomem *reg = ha->iobase;
a8488abe
AV		 2273
2274 /* If possible, enable MSI-X. */
3a03eb79
AV		 2275 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2276 !IS_QLA8432(ha) && !IS_QLA8001(ha))
a8488abe
AV		 2277 goto skip_msix;
2278
e315cd28
AC		 2279 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2280 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
a8488abe 2281 DEBUG2(qla_printk(KERN_WARNING, ha,
e315cd28
AC		 2282 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2283 ha->pdev->revision, ha->fw_attributes));
a8488abe
AV		 2284
2285 goto skip_msix;
2286 }
2287
da7429f9
AV		 2288 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2289 (ha->pdev->subsystem_device == 0x7040 ||
2290 ha->pdev->subsystem_device == 0x7041 ||
2291 ha->pdev->subsystem_device == 0x1705)) {
2292 DEBUG2(qla_printk(KERN_WARNING, ha,
2293 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
2294 ha->pdev->subsystem_vendor,
2295 ha->pdev->subsystem_device));
2296
2297 goto skip_msi;
2298 }
2299
73208dfd 2300 ret = qla24xx_enable_msix(ha, rsp);
a8488abe
AV		 2301 if (!ret) {
2302 DEBUG2(qla_printk(KERN_INFO, ha,
2303 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2304 ha->fw_attributes));
963b0fdd 2305 goto clear_risc_ints;
a8488abe
AV		 2306 }
2307 qla_printk(KERN_WARNING, ha,
2308 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2309skip_msix:
cbedb601 2310
3a03eb79
AV		 2311 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2312 !IS_QLA8001(ha))
cbedb601
AV		 2313 goto skip_msi;
2314
2315 ret = pci_enable_msi(ha->pdev);
2316 if (!ret) {
2317 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2318 ha->flags.msi_enabled = 1;
2319 }
2320skip_msi:
2321
fd34f556 2322 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
d1b1bef4 2323 IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
963b0fdd 2324 if (ret) {
a8488abe
AV		 2325 qla_printk(KERN_WARNING, ha,
2326 "Failed to reserve interrupt %d already in use.\n",
2327 ha->pdev->irq);
963b0fdd
AV		 2328 goto fail;
2329 }
2330 ha->flags.inta_enabled = 1;
963b0fdd
AV		 2331clear_risc_ints:
2332
3a03eb79
AV		 2333 /*
2334 * FIXME: Noted that 8014s were being dropped during NK testing.
2335 * Timing deltas during MSI-X/INTa transitions?
2336 */
2337 if (IS_QLA81XX(ha))
2338 goto fail;
c6952483 2339 spin_lock_irq(&ha->hardware_lock);
963b0fdd
AV		 2340 if (IS_FWI2_CAPABLE(ha)) {
2341 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2342 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2343 } else {
2344 WRT_REG_WORD(&reg->isp.semaphore, 0);
2345 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2346 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
a8488abe 2347 }
c6952483 2348 spin_unlock_irq(&ha->hardware_lock);
a8488abe 2349
963b0fdd 2350fail:
a8488abe
AV		 2351 return ret;
2352}
2353
2354void
e315cd28 2355qla2x00_free_irqs(scsi_qla_host_t *vha)
a8488abe 2356{
e315cd28 2357 struct qla_hw_data *ha = vha->hw;
73208dfd 2358 struct rsp_que *rsp = ha->rsp_q_map[0];
a8488abe
AV		 2359
2360 if (ha->flags.msix_enabled)
2361 qla24xx_disable_msix(ha);
90a86fc0 2362 else if (ha->flags.msi_enabled) {
e315cd28 2363 free_irq(ha->pdev->irq, rsp);
cbedb601 2364 pci_disable_msi(ha->pdev);
90a86fc0
JC		 2365 } else
2366 free_irq(ha->pdev->irq, rsp);
a8488abe 2367}
e315cd28 2368
73208dfd
AC		 2369
2370int qla25xx_request_irq(struct rsp_que *rsp)
2371{
2372 struct qla_hw_data *ha = rsp->hw;
2afa19a9 2373 struct qla_init_msix_entry *intr = &msix_entries[2];
73208dfd
AC		 2374 struct qla_msix_entry *msix = rsp->msix;
2375 int ret;
2376
2377 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2378 if (ret) {
2379 qla_printk(KERN_WARNING, ha,
2380 "MSI-X: Unable to register handler -- %x/%d.\n",
2381 msix->vector, ret);
2382 return ret;
2383 }
2384 msix->have_irq = 1;
2385 msix->rsp = rsp;
2386 return ret;
2387}
kernel source for telekom puls (alcatel/mediatek)