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Commit | Line | Data |
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fa90c54f AV |
1 | /* |
2 | * QLogic Fibre Channel HBA Driver | |
01e58d8e | 3 | * Copyright (c) 2003-2008 QLogic Corporation |
1da177e4 | 4 | * |
fa90c54f AV |
5 | * See LICENSE.qla2xxx for copyright and licensing details. |
6 | */ | |
1da177e4 LT |
7 | #include "qla_def.h" |
8 | ||
9 | #include <linux/blkdev.h> | |
10 | #include <linux/delay.h> | |
11 | ||
12 | #include <scsi/scsi_tcq.h> | |
13 | ||
73208dfd AC |
14 | static request_t *qla2x00_req_pkt(struct scsi_qla_host *, struct req_que *, |
15 | struct rsp_que *rsp); | |
16 | static void qla2x00_isp_cmd(struct scsi_qla_host *, struct req_que *); | |
1da177e4 | 17 | |
59e0b8b0 | 18 | static void qla25xx_set_que(srb_t *, struct rsp_que **); |
1da177e4 LT |
19 | /** |
20 | * qla2x00_get_cmd_direction() - Determine control_flag data direction. | |
21 | * @cmd: SCSI command | |
22 | * | |
23 | * Returns the proper CF_* direction based on CDB. | |
24 | */ | |
25 | static inline uint16_t | |
49fd462a | 26 | qla2x00_get_cmd_direction(srb_t *sp) |
1da177e4 LT |
27 | { |
28 | uint16_t cflags; | |
29 | ||
30 | cflags = 0; | |
31 | ||
32 | /* Set transfer direction */ | |
49fd462a | 33 | if (sp->cmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 | 34 | cflags = CF_WRITE; |
e315cd28 | 35 | sp->fcport->vha->hw->qla_stats.output_bytes += |
49fd462a HZ |
36 | scsi_bufflen(sp->cmd); |
37 | } else if (sp->cmd->sc_data_direction == DMA_FROM_DEVICE) { | |
1da177e4 | 38 | cflags = CF_READ; |
e315cd28 | 39 | sp->fcport->vha->hw->qla_stats.input_bytes += |
49fd462a HZ |
40 | scsi_bufflen(sp->cmd); |
41 | } | |
1da177e4 LT |
42 | return (cflags); |
43 | } | |
44 | ||
45 | /** | |
46 | * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and | |
47 | * Continuation Type 0 IOCBs to allocate. | |
48 | * | |
49 | * @dsds: number of data segment decriptors needed | |
50 | * | |
51 | * Returns the number of IOCB entries needed to store @dsds. | |
52 | */ | |
53 | uint16_t | |
54 | qla2x00_calc_iocbs_32(uint16_t dsds) | |
55 | { | |
56 | uint16_t iocbs; | |
57 | ||
58 | iocbs = 1; | |
59 | if (dsds > 3) { | |
60 | iocbs += (dsds - 3) / 7; | |
61 | if ((dsds - 3) % 7) | |
62 | iocbs++; | |
63 | } | |
64 | return (iocbs); | |
65 | } | |
66 | ||
67 | /** | |
68 | * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and | |
69 | * Continuation Type 1 IOCBs to allocate. | |
70 | * | |
71 | * @dsds: number of data segment decriptors needed | |
72 | * | |
73 | * Returns the number of IOCB entries needed to store @dsds. | |
74 | */ | |
75 | uint16_t | |
76 | qla2x00_calc_iocbs_64(uint16_t dsds) | |
77 | { | |
78 | uint16_t iocbs; | |
79 | ||
80 | iocbs = 1; | |
81 | if (dsds > 2) { | |
82 | iocbs += (dsds - 2) / 5; | |
83 | if ((dsds - 2) % 5) | |
84 | iocbs++; | |
85 | } | |
86 | return (iocbs); | |
87 | } | |
88 | ||
89 | /** | |
90 | * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB. | |
91 | * @ha: HA context | |
92 | * | |
93 | * Returns a pointer to the Continuation Type 0 IOCB packet. | |
94 | */ | |
95 | static inline cont_entry_t * | |
67c2e93a | 96 | qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha) |
1da177e4 LT |
97 | { |
98 | cont_entry_t *cont_pkt; | |
67c2e93a | 99 | struct req_que *req = vha->req; |
1da177e4 | 100 | /* Adjust ring index. */ |
e315cd28 AC |
101 | req->ring_index++; |
102 | if (req->ring_index == req->length) { | |
103 | req->ring_index = 0; | |
104 | req->ring_ptr = req->ring; | |
1da177e4 | 105 | } else { |
e315cd28 | 106 | req->ring_ptr++; |
1da177e4 LT |
107 | } |
108 | ||
e315cd28 | 109 | cont_pkt = (cont_entry_t *)req->ring_ptr; |
1da177e4 LT |
110 | |
111 | /* Load packet defaults. */ | |
112 | *((uint32_t *)(&cont_pkt->entry_type)) = | |
113 | __constant_cpu_to_le32(CONTINUE_TYPE); | |
114 | ||
115 | return (cont_pkt); | |
116 | } | |
117 | ||
118 | /** | |
119 | * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB. | |
120 | * @ha: HA context | |
121 | * | |
122 | * Returns a pointer to the continuation type 1 IOCB packet. | |
123 | */ | |
124 | static inline cont_a64_entry_t * | |
67c2e93a | 125 | qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha) |
1da177e4 LT |
126 | { |
127 | cont_a64_entry_t *cont_pkt; | |
128 | ||
67c2e93a | 129 | struct req_que *req = vha->req; |
1da177e4 | 130 | /* Adjust ring index. */ |
e315cd28 AC |
131 | req->ring_index++; |
132 | if (req->ring_index == req->length) { | |
133 | req->ring_index = 0; | |
134 | req->ring_ptr = req->ring; | |
1da177e4 | 135 | } else { |
e315cd28 | 136 | req->ring_ptr++; |
1da177e4 LT |
137 | } |
138 | ||
e315cd28 | 139 | cont_pkt = (cont_a64_entry_t *)req->ring_ptr; |
1da177e4 LT |
140 | |
141 | /* Load packet defaults. */ | |
142 | *((uint32_t *)(&cont_pkt->entry_type)) = | |
143 | __constant_cpu_to_le32(CONTINUE_A64_TYPE); | |
144 | ||
145 | return (cont_pkt); | |
146 | } | |
147 | ||
148 | /** | |
149 | * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit | |
150 | * capable IOCB types. | |
151 | * | |
152 | * @sp: SRB command to process | |
153 | * @cmd_pkt: Command type 2 IOCB | |
154 | * @tot_dsds: Total number of segments to transfer | |
155 | */ | |
156 | void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt, | |
157 | uint16_t tot_dsds) | |
158 | { | |
159 | uint16_t avail_dsds; | |
160 | uint32_t *cur_dsd; | |
e315cd28 | 161 | scsi_qla_host_t *vha; |
1da177e4 | 162 | struct scsi_cmnd *cmd; |
385d70b4 FT |
163 | struct scatterlist *sg; |
164 | int i; | |
1da177e4 LT |
165 | |
166 | cmd = sp->cmd; | |
167 | ||
168 | /* Update entry type to indicate Command Type 2 IOCB */ | |
169 | *((uint32_t *)(&cmd_pkt->entry_type)) = | |
170 | __constant_cpu_to_le32(COMMAND_TYPE); | |
171 | ||
172 | /* No data transfer */ | |
385d70b4 | 173 | if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { |
1da177e4 LT |
174 | cmd_pkt->byte_count = __constant_cpu_to_le32(0); |
175 | return; | |
176 | } | |
177 | ||
444786d7 | 178 | vha = sp->fcport->vha; |
49fd462a | 179 | cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); |
1da177e4 LT |
180 | |
181 | /* Three DSDs are available in the Command Type 2 IOCB */ | |
182 | avail_dsds = 3; | |
183 | cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; | |
184 | ||
185 | /* Load data segments */ | |
385d70b4 FT |
186 | scsi_for_each_sg(cmd, sg, tot_dsds, i) { |
187 | cont_entry_t *cont_pkt; | |
188 | ||
189 | /* Allocate additional continuation packets? */ | |
190 | if (avail_dsds == 0) { | |
191 | /* | |
192 | * Seven DSDs are available in the Continuation | |
193 | * Type 0 IOCB. | |
194 | */ | |
67c2e93a | 195 | cont_pkt = qla2x00_prep_cont_type0_iocb(vha); |
385d70b4 FT |
196 | cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address; |
197 | avail_dsds = 7; | |
1da177e4 | 198 | } |
385d70b4 FT |
199 | |
200 | *cur_dsd++ = cpu_to_le32(sg_dma_address(sg)); | |
201 | *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); | |
202 | avail_dsds--; | |
1da177e4 LT |
203 | } |
204 | } | |
205 | ||
206 | /** | |
207 | * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit | |
208 | * capable IOCB types. | |
209 | * | |
210 | * @sp: SRB command to process | |
211 | * @cmd_pkt: Command type 3 IOCB | |
212 | * @tot_dsds: Total number of segments to transfer | |
213 | */ | |
214 | void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt, | |
215 | uint16_t tot_dsds) | |
216 | { | |
217 | uint16_t avail_dsds; | |
218 | uint32_t *cur_dsd; | |
e315cd28 | 219 | scsi_qla_host_t *vha; |
1da177e4 | 220 | struct scsi_cmnd *cmd; |
385d70b4 FT |
221 | struct scatterlist *sg; |
222 | int i; | |
1da177e4 LT |
223 | |
224 | cmd = sp->cmd; | |
225 | ||
226 | /* Update entry type to indicate Command Type 3 IOCB */ | |
227 | *((uint32_t *)(&cmd_pkt->entry_type)) = | |
228 | __constant_cpu_to_le32(COMMAND_A64_TYPE); | |
229 | ||
230 | /* No data transfer */ | |
385d70b4 | 231 | if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { |
1da177e4 LT |
232 | cmd_pkt->byte_count = __constant_cpu_to_le32(0); |
233 | return; | |
234 | } | |
235 | ||
444786d7 | 236 | vha = sp->fcport->vha; |
49fd462a | 237 | cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp)); |
1da177e4 LT |
238 | |
239 | /* Two DSDs are available in the Command Type 3 IOCB */ | |
240 | avail_dsds = 2; | |
241 | cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; | |
242 | ||
243 | /* Load data segments */ | |
385d70b4 FT |
244 | scsi_for_each_sg(cmd, sg, tot_dsds, i) { |
245 | dma_addr_t sle_dma; | |
246 | cont_a64_entry_t *cont_pkt; | |
247 | ||
248 | /* Allocate additional continuation packets? */ | |
249 | if (avail_dsds == 0) { | |
250 | /* | |
251 | * Five DSDs are available in the Continuation | |
252 | * Type 1 IOCB. | |
253 | */ | |
67c2e93a | 254 | cont_pkt = qla2x00_prep_cont_type1_iocb(vha); |
385d70b4 FT |
255 | cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; |
256 | avail_dsds = 5; | |
1da177e4 | 257 | } |
385d70b4 FT |
258 | |
259 | sle_dma = sg_dma_address(sg); | |
260 | *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); | |
261 | *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); | |
262 | *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); | |
263 | avail_dsds--; | |
1da177e4 LT |
264 | } |
265 | } | |
266 | ||
267 | /** | |
268 | * qla2x00_start_scsi() - Send a SCSI command to the ISP | |
269 | * @sp: command to send to the ISP | |
270 | * | |
cc3ef7bc | 271 | * Returns non-zero if a failure occurred, else zero. |
1da177e4 LT |
272 | */ |
273 | int | |
274 | qla2x00_start_scsi(srb_t *sp) | |
275 | { | |
385d70b4 | 276 | int ret, nseg; |
1da177e4 | 277 | unsigned long flags; |
e315cd28 | 278 | scsi_qla_host_t *vha; |
1da177e4 LT |
279 | struct scsi_cmnd *cmd; |
280 | uint32_t *clr_ptr; | |
281 | uint32_t index; | |
282 | uint32_t handle; | |
283 | cmd_entry_t *cmd_pkt; | |
1da177e4 LT |
284 | uint16_t cnt; |
285 | uint16_t req_cnt; | |
286 | uint16_t tot_dsds; | |
3d71644c | 287 | struct device_reg_2xxx __iomem *reg; |
e315cd28 AC |
288 | struct qla_hw_data *ha; |
289 | struct req_que *req; | |
73208dfd | 290 | struct rsp_que *rsp; |
1da177e4 LT |
291 | |
292 | /* Setup device pointers. */ | |
293 | ret = 0; | |
444786d7 | 294 | vha = sp->fcport->vha; |
e315cd28 | 295 | ha = vha->hw; |
3d71644c | 296 | reg = &ha->iobase->isp; |
1da177e4 | 297 | cmd = sp->cmd; |
73208dfd AC |
298 | req = ha->req_q_map[0]; |
299 | rsp = ha->rsp_q_map[0]; | |
83021920 AV |
300 | /* So we know we haven't pci_map'ed anything yet */ |
301 | tot_dsds = 0; | |
1da177e4 LT |
302 | |
303 | /* Send marker if required */ | |
e315cd28 | 304 | if (vha->marker_needed != 0) { |
73208dfd AC |
305 | if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) |
306 | != QLA_SUCCESS) | |
1da177e4 | 307 | return (QLA_FUNCTION_FAILED); |
e315cd28 | 308 | vha->marker_needed = 0; |
1da177e4 LT |
309 | } |
310 | ||
311 | /* Acquire ring specific lock */ | |
c9c5ced9 | 312 | spin_lock_irqsave(&ha->hardware_lock, flags); |
1da177e4 LT |
313 | |
314 | /* Check for room in outstanding command list. */ | |
e315cd28 | 315 | handle = req->current_outstanding_cmd; |
1da177e4 LT |
316 | for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { |
317 | handle++; | |
318 | if (handle == MAX_OUTSTANDING_COMMANDS) | |
319 | handle = 1; | |
e315cd28 | 320 | if (!req->outstanding_cmds[handle]) |
1da177e4 LT |
321 | break; |
322 | } | |
323 | if (index == MAX_OUTSTANDING_COMMANDS) | |
324 | goto queuing_error; | |
325 | ||
83021920 | 326 | /* Map the sg table so we have an accurate count of sg entries needed */ |
2c3dfe3f SJ |
327 | if (scsi_sg_count(cmd)) { |
328 | nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), | |
329 | scsi_sg_count(cmd), cmd->sc_data_direction); | |
330 | if (unlikely(!nseg)) | |
331 | goto queuing_error; | |
332 | } else | |
333 | nseg = 0; | |
334 | ||
385d70b4 | 335 | tot_dsds = nseg; |
83021920 | 336 | |
1da177e4 | 337 | /* Calculate the number of request entries needed. */ |
fd34f556 | 338 | req_cnt = ha->isp_ops->calc_req_entries(tot_dsds); |
e315cd28 | 339 | if (req->cnt < (req_cnt + 2)) { |
1da177e4 | 340 | cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg)); |
e315cd28 AC |
341 | if (req->ring_index < cnt) |
342 | req->cnt = cnt - req->ring_index; | |
1da177e4 | 343 | else |
e315cd28 AC |
344 | req->cnt = req->length - |
345 | (req->ring_index - cnt); | |
1da177e4 | 346 | } |
e315cd28 | 347 | if (req->cnt < (req_cnt + 2)) |
1da177e4 LT |
348 | goto queuing_error; |
349 | ||
1da177e4 | 350 | /* Build command packet */ |
e315cd28 AC |
351 | req->current_outstanding_cmd = handle; |
352 | req->outstanding_cmds[handle] = sp; | |
cf53b069 | 353 | sp->handle = handle; |
1da177e4 | 354 | sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; |
e315cd28 | 355 | req->cnt -= req_cnt; |
1da177e4 | 356 | |
e315cd28 | 357 | cmd_pkt = (cmd_entry_t *)req->ring_ptr; |
1da177e4 LT |
358 | cmd_pkt->handle = handle; |
359 | /* Zero out remaining portion of packet. */ | |
360 | clr_ptr = (uint32_t *)cmd_pkt + 2; | |
361 | memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); | |
362 | cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); | |
363 | ||
bdf79621 AV |
364 | /* Set target ID and LUN number*/ |
365 | SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id); | |
366 | cmd_pkt->lun = cpu_to_le16(sp->cmd->device->lun); | |
1da177e4 LT |
367 | |
368 | /* Update tagged queuing modifier */ | |
369 | cmd_pkt->control_flags = __constant_cpu_to_le16(CF_SIMPLE_TAG); | |
1da177e4 | 370 | |
1da177e4 LT |
371 | /* Load SCSI command packet. */ |
372 | memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len); | |
385d70b4 | 373 | cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); |
1da177e4 LT |
374 | |
375 | /* Build IOCB segments */ | |
fd34f556 | 376 | ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds); |
1da177e4 LT |
377 | |
378 | /* Set total data segment count. */ | |
379 | cmd_pkt->entry_count = (uint8_t)req_cnt; | |
380 | wmb(); | |
381 | ||
382 | /* Adjust ring index. */ | |
e315cd28 AC |
383 | req->ring_index++; |
384 | if (req->ring_index == req->length) { | |
385 | req->ring_index = 0; | |
386 | req->ring_ptr = req->ring; | |
1da177e4 | 387 | } else |
e315cd28 | 388 | req->ring_ptr++; |
1da177e4 | 389 | |
1da177e4 | 390 | sp->flags |= SRB_DMA_VALID; |
1da177e4 LT |
391 | |
392 | /* Set chip new ring index. */ | |
e315cd28 | 393 | WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index); |
1da177e4 LT |
394 | RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */ |
395 | ||
4fdfefe5 | 396 | /* Manage unprocessed RIO/ZIO commands in response queue. */ |
e315cd28 | 397 | if (vha->flags.process_response_queue && |
73208dfd AC |
398 | rsp->ring_ptr->signature != RESPONSE_PROCESSED) |
399 | qla2x00_process_response_queue(rsp); | |
4fdfefe5 | 400 | |
c9c5ced9 | 401 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
1da177e4 LT |
402 | return (QLA_SUCCESS); |
403 | ||
404 | queuing_error: | |
385d70b4 FT |
405 | if (tot_dsds) |
406 | scsi_dma_unmap(cmd); | |
407 | ||
c9c5ced9 | 408 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
1da177e4 LT |
409 | |
410 | return (QLA_FUNCTION_FAILED); | |
411 | } | |
412 | ||
413 | /** | |
414 | * qla2x00_marker() - Send a marker IOCB to the firmware. | |
415 | * @ha: HA context | |
416 | * @loop_id: loop ID | |
417 | * @lun: LUN | |
418 | * @type: marker modifier | |
419 | * | |
420 | * Can be called from both normal and interrupt context. | |
421 | * | |
cc3ef7bc | 422 | * Returns non-zero if a failure occurred, else zero. |
1da177e4 | 423 | */ |
fa2a1ce5 | 424 | int |
73208dfd AC |
425 | __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, |
426 | struct rsp_que *rsp, uint16_t loop_id, | |
427 | uint16_t lun, uint8_t type) | |
1da177e4 | 428 | { |
2b6c0cee AV |
429 | mrk_entry_t *mrk; |
430 | struct mrk_entry_24xx *mrk24; | |
e315cd28 AC |
431 | struct qla_hw_data *ha = vha->hw; |
432 | scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); | |
1da177e4 | 433 | |
2b6c0cee | 434 | mrk24 = NULL; |
73208dfd | 435 | mrk = (mrk_entry_t *)qla2x00_req_pkt(vha, req, rsp); |
2b6c0cee AV |
436 | if (mrk == NULL) { |
437 | DEBUG2_3(printk("%s(%ld): failed to allocate Marker IOCB.\n", | |
e315cd28 | 438 | __func__, base_vha->host_no)); |
1da177e4 LT |
439 | |
440 | return (QLA_FUNCTION_FAILED); | |
441 | } | |
442 | ||
2b6c0cee AV |
443 | mrk->entry_type = MARKER_TYPE; |
444 | mrk->modifier = type; | |
1da177e4 | 445 | if (type != MK_SYNC_ALL) { |
e428924c | 446 | if (IS_FWI2_CAPABLE(ha)) { |
2b6c0cee AV |
447 | mrk24 = (struct mrk_entry_24xx *) mrk; |
448 | mrk24->nport_handle = cpu_to_le16(loop_id); | |
449 | mrk24->lun[1] = LSB(lun); | |
450 | mrk24->lun[2] = MSB(lun); | |
b797b6de | 451 | host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun)); |
e315cd28 | 452 | mrk24->vp_index = vha->vp_idx; |
2afa19a9 | 453 | mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle); |
2b6c0cee AV |
454 | } else { |
455 | SET_TARGET_ID(ha, mrk->target, loop_id); | |
456 | mrk->lun = cpu_to_le16(lun); | |
457 | } | |
1da177e4 LT |
458 | } |
459 | wmb(); | |
460 | ||
73208dfd | 461 | qla2x00_isp_cmd(vha, req); |
1da177e4 LT |
462 | |
463 | return (QLA_SUCCESS); | |
464 | } | |
465 | ||
fa2a1ce5 | 466 | int |
73208dfd AC |
467 | qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, |
468 | struct rsp_que *rsp, uint16_t loop_id, uint16_t lun, | |
469 | uint8_t type) | |
1da177e4 LT |
470 | { |
471 | int ret; | |
472 | unsigned long flags = 0; | |
473 | ||
73208dfd AC |
474 | spin_lock_irqsave(&vha->hw->hardware_lock, flags); |
475 | ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type); | |
476 | spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); | |
1da177e4 LT |
477 | |
478 | return (ret); | |
479 | } | |
480 | ||
481 | /** | |
482 | * qla2x00_req_pkt() - Retrieve a request packet from the request ring. | |
483 | * @ha: HA context | |
484 | * | |
485 | * Note: The caller must hold the hardware lock before calling this routine. | |
486 | * | |
487 | * Returns NULL if function failed, else, a pointer to the request packet. | |
488 | */ | |
489 | static request_t * | |
73208dfd AC |
490 | qla2x00_req_pkt(struct scsi_qla_host *vha, struct req_que *req, |
491 | struct rsp_que *rsp) | |
1da177e4 | 492 | { |
e315cd28 | 493 | struct qla_hw_data *ha = vha->hw; |
73208dfd | 494 | device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); |
1da177e4 LT |
495 | request_t *pkt = NULL; |
496 | uint16_t cnt; | |
497 | uint32_t *dword_ptr; | |
498 | uint32_t timer; | |
499 | uint16_t req_cnt = 1; | |
500 | ||
501 | /* Wait 1 second for slot. */ | |
502 | for (timer = HZ; timer; timer--) { | |
e315cd28 | 503 | if ((req_cnt + 2) >= req->cnt) { |
1da177e4 | 504 | /* Calculate number of free request entries. */ |
73208dfd AC |
505 | if (ha->mqenable) |
506 | cnt = (uint16_t) | |
507 | RD_REG_DWORD(®->isp25mq.req_q_out); | |
508 | else { | |
a9083016 GM |
509 | if (IS_QLA82XX(ha)) |
510 | cnt = (uint16_t)RD_REG_DWORD( | |
511 | ®->isp82.req_q_out); | |
512 | else if (IS_FWI2_CAPABLE(ha)) | |
73208dfd AC |
513 | cnt = (uint16_t)RD_REG_DWORD( |
514 | ®->isp24.req_q_out); | |
515 | else | |
516 | cnt = qla2x00_debounce_register( | |
517 | ISP_REQ_Q_OUT(ha, ®->isp)); | |
518 | } | |
e315cd28 AC |
519 | if (req->ring_index < cnt) |
520 | req->cnt = cnt - req->ring_index; | |
1da177e4 | 521 | else |
e315cd28 AC |
522 | req->cnt = req->length - |
523 | (req->ring_index - cnt); | |
1da177e4 LT |
524 | } |
525 | /* If room for request in request ring. */ | |
e315cd28 AC |
526 | if ((req_cnt + 2) < req->cnt) { |
527 | req->cnt--; | |
528 | pkt = req->ring_ptr; | |
1da177e4 LT |
529 | |
530 | /* Zero out packet. */ | |
531 | dword_ptr = (uint32_t *)pkt; | |
532 | for (cnt = 0; cnt < REQUEST_ENTRY_SIZE / 4; cnt++) | |
533 | *dword_ptr++ = 0; | |
534 | ||
1da177e4 LT |
535 | /* Set entry count. */ |
536 | pkt->entry_count = 1; | |
537 | ||
538 | break; | |
539 | } | |
540 | ||
541 | /* Release ring specific lock */ | |
e315cd28 | 542 | spin_unlock_irq(&ha->hardware_lock); |
1da177e4 LT |
543 | |
544 | udelay(2); /* 2 us */ | |
545 | ||
546 | /* Check for pending interrupts. */ | |
547 | /* During init we issue marker directly */ | |
e315cd28 | 548 | if (!vha->marker_needed && !vha->flags.init_done) |
73208dfd | 549 | qla2x00_poll(rsp); |
1da177e4 LT |
550 | spin_lock_irq(&ha->hardware_lock); |
551 | } | |
552 | if (!pkt) { | |
553 | DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__)); | |
554 | } | |
555 | ||
556 | return (pkt); | |
557 | } | |
558 | ||
559 | /** | |
560 | * qla2x00_isp_cmd() - Modify the request ring pointer. | |
561 | * @ha: HA context | |
562 | * | |
563 | * Note: The caller must hold the hardware lock before calling this routine. | |
564 | */ | |
413975a0 | 565 | static void |
73208dfd | 566 | qla2x00_isp_cmd(struct scsi_qla_host *vha, struct req_que *req) |
1da177e4 | 567 | { |
e315cd28 | 568 | struct qla_hw_data *ha = vha->hw; |
73208dfd | 569 | device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); |
17d98630 | 570 | struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp; |
1da177e4 LT |
571 | |
572 | DEBUG5(printk("%s(): IOCB data:\n", __func__)); | |
573 | DEBUG5(qla2x00_dump_buffer( | |
e315cd28 | 574 | (uint8_t *)req->ring_ptr, REQUEST_ENTRY_SIZE)); |
1da177e4 LT |
575 | |
576 | /* Adjust ring index. */ | |
e315cd28 AC |
577 | req->ring_index++; |
578 | if (req->ring_index == req->length) { | |
579 | req->ring_index = 0; | |
580 | req->ring_ptr = req->ring; | |
1da177e4 | 581 | } else |
e315cd28 | 582 | req->ring_ptr++; |
1da177e4 LT |
583 | |
584 | /* Set chip new ring index. */ | |
a9083016 GM |
585 | if (IS_QLA82XX(ha)) { |
586 | uint32_t dbval = 0x04 | (ha->portnum << 5); | |
587 | ||
588 | /* write, read and verify logic */ | |
589 | dbval = dbval | (req->id << 8) | (req->ring_index << 16); | |
590 | if (ql2xdbwr) | |
591 | qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval); | |
592 | else { | |
593 | WRT_REG_DWORD( | |
594 | (unsigned long __iomem *)ha->nxdb_wr_ptr, | |
595 | dbval); | |
596 | wmb(); | |
597 | while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) { | |
598 | WRT_REG_DWORD((unsigned long __iomem *) | |
599 | ha->nxdb_wr_ptr, dbval); | |
600 | wmb(); | |
601 | } | |
602 | } | |
603 | } else if (ha->mqenable) { | |
604 | /* Set chip new ring index. */ | |
17d98630 AC |
605 | WRT_REG_DWORD(®->isp25mq.req_q_in, req->ring_index); |
606 | RD_REG_DWORD(&ioreg->hccr); | |
a9083016 | 607 | } else { |
73208dfd AC |
608 | if (IS_FWI2_CAPABLE(ha)) { |
609 | WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); | |
610 | RD_REG_DWORD_RELAXED(®->isp24.req_q_in); | |
611 | } else { | |
612 | WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), | |
613 | req->ring_index); | |
614 | RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); | |
615 | } | |
2b6c0cee AV |
616 | } |
617 | ||
618 | } | |
619 | ||
620 | /** | |
621 | * qla24xx_calc_iocbs() - Determine number of Command Type 3 and | |
622 | * Continuation Type 1 IOCBs to allocate. | |
623 | * | |
624 | * @dsds: number of data segment decriptors needed | |
625 | * | |
626 | * Returns the number of IOCB entries needed to store @dsds. | |
627 | */ | |
a9083016 | 628 | inline uint16_t |
2b6c0cee AV |
629 | qla24xx_calc_iocbs(uint16_t dsds) |
630 | { | |
631 | uint16_t iocbs; | |
632 | ||
633 | iocbs = 1; | |
634 | if (dsds > 1) { | |
635 | iocbs += (dsds - 1) / 5; | |
636 | if ((dsds - 1) % 5) | |
637 | iocbs++; | |
638 | } | |
639 | return iocbs; | |
640 | } | |
641 | ||
642 | /** | |
643 | * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7 | |
644 | * IOCB types. | |
645 | * | |
646 | * @sp: SRB command to process | |
647 | * @cmd_pkt: Command type 3 IOCB | |
648 | * @tot_dsds: Total number of segments to transfer | |
649 | */ | |
a9083016 | 650 | inline void |
2b6c0cee AV |
651 | qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, |
652 | uint16_t tot_dsds) | |
653 | { | |
654 | uint16_t avail_dsds; | |
655 | uint32_t *cur_dsd; | |
e315cd28 | 656 | scsi_qla_host_t *vha; |
2b6c0cee | 657 | struct scsi_cmnd *cmd; |
385d70b4 FT |
658 | struct scatterlist *sg; |
659 | int i; | |
73208dfd | 660 | struct req_que *req; |
2b6c0cee AV |
661 | |
662 | cmd = sp->cmd; | |
663 | ||
664 | /* Update entry type to indicate Command Type 3 IOCB */ | |
665 | *((uint32_t *)(&cmd_pkt->entry_type)) = | |
666 | __constant_cpu_to_le32(COMMAND_TYPE_7); | |
667 | ||
668 | /* No data transfer */ | |
385d70b4 | 669 | if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) { |
2b6c0cee AV |
670 | cmd_pkt->byte_count = __constant_cpu_to_le32(0); |
671 | return; | |
672 | } | |
673 | ||
444786d7 | 674 | vha = sp->fcport->vha; |
67c2e93a | 675 | req = vha->req; |
2b6c0cee AV |
676 | |
677 | /* Set transfer direction */ | |
49fd462a | 678 | if (cmd->sc_data_direction == DMA_TO_DEVICE) { |
2b6c0cee AV |
679 | cmd_pkt->task_mgmt_flags = |
680 | __constant_cpu_to_le16(TMF_WRITE_DATA); | |
e315cd28 | 681 | sp->fcport->vha->hw->qla_stats.output_bytes += |
49fd462a HZ |
682 | scsi_bufflen(sp->cmd); |
683 | } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) { | |
2b6c0cee AV |
684 | cmd_pkt->task_mgmt_flags = |
685 | __constant_cpu_to_le16(TMF_READ_DATA); | |
e315cd28 | 686 | sp->fcport->vha->hw->qla_stats.input_bytes += |
49fd462a HZ |
687 | scsi_bufflen(sp->cmd); |
688 | } | |
2b6c0cee AV |
689 | |
690 | /* One DSD is available in the Command Type 3 IOCB */ | |
691 | avail_dsds = 1; | |
692 | cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address; | |
693 | ||
694 | /* Load data segments */ | |
385d70b4 FT |
695 | |
696 | scsi_for_each_sg(cmd, sg, tot_dsds, i) { | |
697 | dma_addr_t sle_dma; | |
698 | cont_a64_entry_t *cont_pkt; | |
699 | ||
700 | /* Allocate additional continuation packets? */ | |
701 | if (avail_dsds == 0) { | |
702 | /* | |
703 | * Five DSDs are available in the Continuation | |
704 | * Type 1 IOCB. | |
705 | */ | |
67c2e93a | 706 | cont_pkt = qla2x00_prep_cont_type1_iocb(vha); |
385d70b4 FT |
707 | cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; |
708 | avail_dsds = 5; | |
2b6c0cee | 709 | } |
385d70b4 FT |
710 | |
711 | sle_dma = sg_dma_address(sg); | |
712 | *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); | |
713 | *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); | |
714 | *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); | |
715 | avail_dsds--; | |
2b6c0cee AV |
716 | } |
717 | } | |
718 | ||
719 | ||
720 | /** | |
721 | * qla24xx_start_scsi() - Send a SCSI command to the ISP | |
722 | * @sp: command to send to the ISP | |
723 | * | |
cc3ef7bc | 724 | * Returns non-zero if a failure occurred, else zero. |
2b6c0cee AV |
725 | */ |
726 | int | |
727 | qla24xx_start_scsi(srb_t *sp) | |
728 | { | |
385d70b4 | 729 | int ret, nseg; |
2b6c0cee | 730 | unsigned long flags; |
2b6c0cee AV |
731 | uint32_t *clr_ptr; |
732 | uint32_t index; | |
733 | uint32_t handle; | |
734 | struct cmd_type_7 *cmd_pkt; | |
2b6c0cee AV |
735 | uint16_t cnt; |
736 | uint16_t req_cnt; | |
737 | uint16_t tot_dsds; | |
73208dfd AC |
738 | struct req_que *req = NULL; |
739 | struct rsp_que *rsp = NULL; | |
740 | struct scsi_cmnd *cmd = sp->cmd; | |
444786d7 | 741 | struct scsi_qla_host *vha = sp->fcport->vha; |
73208dfd | 742 | struct qla_hw_data *ha = vha->hw; |
2b6c0cee AV |
743 | |
744 | /* Setup device pointers. */ | |
745 | ret = 0; | |
73208dfd | 746 | |
59e0b8b0 AC |
747 | qla25xx_set_que(sp, &rsp); |
748 | req = vha->req; | |
73208dfd | 749 | |
2b6c0cee AV |
750 | /* So we know we haven't pci_map'ed anything yet */ |
751 | tot_dsds = 0; | |
752 | ||
753 | /* Send marker if required */ | |
e315cd28 | 754 | if (vha->marker_needed != 0) { |
73208dfd AC |
755 | if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) |
756 | != QLA_SUCCESS) | |
2b6c0cee | 757 | return QLA_FUNCTION_FAILED; |
e315cd28 | 758 | vha->marker_needed = 0; |
2b6c0cee AV |
759 | } |
760 | ||
761 | /* Acquire ring specific lock */ | |
e315cd28 | 762 | spin_lock_irqsave(&ha->hardware_lock, flags); |
2b6c0cee AV |
763 | |
764 | /* Check for room in outstanding command list. */ | |
e315cd28 | 765 | handle = req->current_outstanding_cmd; |
2b6c0cee AV |
766 | for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { |
767 | handle++; | |
768 | if (handle == MAX_OUTSTANDING_COMMANDS) | |
769 | handle = 1; | |
e315cd28 | 770 | if (!req->outstanding_cmds[handle]) |
2b6c0cee AV |
771 | break; |
772 | } | |
773 | if (index == MAX_OUTSTANDING_COMMANDS) | |
774 | goto queuing_error; | |
775 | ||
776 | /* Map the sg table so we have an accurate count of sg entries needed */ | |
2c3dfe3f SJ |
777 | if (scsi_sg_count(cmd)) { |
778 | nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), | |
779 | scsi_sg_count(cmd), cmd->sc_data_direction); | |
780 | if (unlikely(!nseg)) | |
2b6c0cee | 781 | goto queuing_error; |
2c3dfe3f SJ |
782 | } else |
783 | nseg = 0; | |
784 | ||
385d70b4 | 785 | tot_dsds = nseg; |
2b6c0cee AV |
786 | |
787 | req_cnt = qla24xx_calc_iocbs(tot_dsds); | |
e315cd28 | 788 | if (req->cnt < (req_cnt + 2)) { |
08029990 | 789 | cnt = RD_REG_DWORD_RELAXED(req->req_q_out); |
73208dfd | 790 | |
e315cd28 AC |
791 | if (req->ring_index < cnt) |
792 | req->cnt = cnt - req->ring_index; | |
2b6c0cee | 793 | else |
e315cd28 AC |
794 | req->cnt = req->length - |
795 | (req->ring_index - cnt); | |
2b6c0cee | 796 | } |
e315cd28 | 797 | if (req->cnt < (req_cnt + 2)) |
2b6c0cee | 798 | goto queuing_error; |
2b6c0cee AV |
799 | |
800 | /* Build command packet. */ | |
e315cd28 AC |
801 | req->current_outstanding_cmd = handle; |
802 | req->outstanding_cmds[handle] = sp; | |
cf53b069 | 803 | sp->handle = handle; |
2b6c0cee | 804 | sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; |
e315cd28 | 805 | req->cnt -= req_cnt; |
2b6c0cee | 806 | |
e315cd28 | 807 | cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; |
2afa19a9 | 808 | cmd_pkt->handle = MAKE_HANDLE(req->id, handle); |
2b6c0cee AV |
809 | |
810 | /* Zero out remaining portion of packet. */ | |
72df8325 | 811 | /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ |
2b6c0cee AV |
812 | clr_ptr = (uint32_t *)cmd_pkt + 2; |
813 | memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); | |
814 | cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); | |
815 | ||
816 | /* Set NPORT-ID and LUN number*/ | |
817 | cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); | |
818 | cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; | |
819 | cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; | |
820 | cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; | |
2c3dfe3f | 821 | cmd_pkt->vp_index = sp->fcport->vp_idx; |
2b6c0cee | 822 | |
661c3f6c | 823 | int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun); |
0d4be124 | 824 | host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); |
2b6c0cee | 825 | |
2b6c0cee AV |
826 | /* Load SCSI command packet. */ |
827 | memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); | |
828 | host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); | |
829 | ||
385d70b4 | 830 | cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); |
2b6c0cee AV |
831 | |
832 | /* Build IOCB segments */ | |
833 | qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); | |
834 | ||
835 | /* Set total data segment count. */ | |
836 | cmd_pkt->entry_count = (uint8_t)req_cnt; | |
2afa19a9 AC |
837 | /* Specify response queue number where completion should happen */ |
838 | cmd_pkt->entry_status = (uint8_t) rsp->id; | |
2b6c0cee AV |
839 | wmb(); |
840 | ||
841 | /* Adjust ring index. */ | |
e315cd28 AC |
842 | req->ring_index++; |
843 | if (req->ring_index == req->length) { | |
844 | req->ring_index = 0; | |
845 | req->ring_ptr = req->ring; | |
2b6c0cee | 846 | } else |
e315cd28 | 847 | req->ring_ptr++; |
2b6c0cee AV |
848 | |
849 | sp->flags |= SRB_DMA_VALID; | |
2b6c0cee AV |
850 | |
851 | /* Set chip new ring index. */ | |
08029990 AV |
852 | WRT_REG_DWORD(req->req_q_in, req->ring_index); |
853 | RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr); | |
2b6c0cee | 854 | |
4fdfefe5 | 855 | /* Manage unprocessed RIO/ZIO commands in response queue. */ |
e315cd28 | 856 | if (vha->flags.process_response_queue && |
73208dfd | 857 | rsp->ring_ptr->signature != RESPONSE_PROCESSED) |
2afa19a9 | 858 | qla24xx_process_response_queue(vha, rsp); |
4fdfefe5 | 859 | |
e315cd28 | 860 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
2b6c0cee AV |
861 | return QLA_SUCCESS; |
862 | ||
863 | queuing_error: | |
385d70b4 FT |
864 | if (tot_dsds) |
865 | scsi_dma_unmap(cmd); | |
866 | ||
e315cd28 | 867 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
2b6c0cee AV |
868 | |
869 | return QLA_FUNCTION_FAILED; | |
1da177e4 | 870 | } |
68ca949c | 871 | |
59e0b8b0 | 872 | static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) |
68ca949c AC |
873 | { |
874 | struct scsi_cmnd *cmd = sp->cmd; | |
68ca949c AC |
875 | struct qla_hw_data *ha = sp->fcport->vha->hw; |
876 | int affinity = cmd->request->cpu; | |
877 | ||
7163ea81 | 878 | if (ha->flags.cpu_affinity_enabled && affinity >= 0 && |
59e0b8b0 | 879 | affinity < ha->max_rsp_queues - 1) |
68ca949c | 880 | *rsp = ha->rsp_q_map[affinity + 1]; |
59e0b8b0 | 881 | else |
68ca949c | 882 | *rsp = ha->rsp_q_map[0]; |
68ca949c | 883 | } |
ac280b67 AV |
884 | |
885 | /* Generic Control-SRB manipulation functions. */ | |
886 | ||
887 | static void * | |
888 | qla2x00_alloc_iocbs(srb_t *sp) | |
889 | { | |
890 | scsi_qla_host_t *vha = sp->fcport->vha; | |
891 | struct qla_hw_data *ha = vha->hw; | |
892 | struct req_que *req = ha->req_q_map[0]; | |
893 | device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); | |
894 | uint32_t index, handle; | |
895 | request_t *pkt; | |
896 | uint16_t cnt, req_cnt; | |
897 | ||
898 | pkt = NULL; | |
899 | req_cnt = 1; | |
900 | ||
901 | /* Check for room in outstanding command list. */ | |
902 | handle = req->current_outstanding_cmd; | |
903 | for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { | |
904 | handle++; | |
905 | if (handle == MAX_OUTSTANDING_COMMANDS) | |
906 | handle = 1; | |
907 | if (!req->outstanding_cmds[handle]) | |
908 | break; | |
909 | } | |
910 | if (index == MAX_OUTSTANDING_COMMANDS) | |
911 | goto queuing_error; | |
912 | ||
913 | /* Check for room on request queue. */ | |
914 | if (req->cnt < req_cnt) { | |
915 | if (ha->mqenable) | |
916 | cnt = RD_REG_DWORD(®->isp25mq.req_q_out); | |
917 | else if (IS_FWI2_CAPABLE(ha)) | |
918 | cnt = RD_REG_DWORD(®->isp24.req_q_out); | |
919 | else | |
920 | cnt = qla2x00_debounce_register( | |
921 | ISP_REQ_Q_OUT(ha, ®->isp)); | |
922 | ||
923 | if (req->ring_index < cnt) | |
924 | req->cnt = cnt - req->ring_index; | |
925 | else | |
926 | req->cnt = req->length - | |
927 | (req->ring_index - cnt); | |
928 | } | |
929 | if (req->cnt < req_cnt) | |
930 | goto queuing_error; | |
931 | ||
932 | /* Prep packet */ | |
933 | req->current_outstanding_cmd = handle; | |
934 | req->outstanding_cmds[handle] = sp; | |
935 | req->cnt -= req_cnt; | |
936 | ||
937 | pkt = req->ring_ptr; | |
938 | memset(pkt, 0, REQUEST_ENTRY_SIZE); | |
939 | pkt->entry_count = req_cnt; | |
940 | pkt->handle = handle; | |
941 | sp->handle = handle; | |
942 | ||
943 | queuing_error: | |
944 | return pkt; | |
945 | } | |
946 | ||
947 | static void | |
948 | qla2x00_start_iocbs(srb_t *sp) | |
949 | { | |
950 | struct qla_hw_data *ha = sp->fcport->vha->hw; | |
951 | struct req_que *req = ha->req_q_map[0]; | |
952 | device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); | |
953 | struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp; | |
954 | ||
a9083016 GM |
955 | if (IS_QLA82XX(ha)) { |
956 | qla82xx_start_iocbs(sp); | |
ac280b67 | 957 | } else { |
a9083016 GM |
958 | /* Adjust ring index. */ |
959 | req->ring_index++; | |
960 | if (req->ring_index == req->length) { | |
961 | req->ring_index = 0; | |
962 | req->ring_ptr = req->ring; | |
963 | } else | |
964 | req->ring_ptr++; | |
965 | ||
966 | /* Set chip new ring index. */ | |
967 | if (ha->mqenable) { | |
968 | WRT_REG_DWORD(®->isp25mq.req_q_in, req->ring_index); | |
969 | RD_REG_DWORD(&ioreg->hccr); | |
970 | } else if (IS_QLA82XX(ha)) { | |
971 | qla82xx_start_iocbs(sp); | |
972 | } else if (IS_FWI2_CAPABLE(ha)) { | |
973 | WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); | |
974 | RD_REG_DWORD_RELAXED(®->isp24.req_q_in); | |
975 | } else { | |
976 | WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), | |
977 | req->ring_index); | |
978 | RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); | |
979 | } | |
ac280b67 AV |
980 | } |
981 | } | |
982 | ||
983 | static void | |
984 | qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) | |
985 | { | |
4916392b MI |
986 | struct srb_ctx *ctx = sp->ctx; |
987 | struct srb_iocb *lio = ctx->u.iocb_cmd; | |
ac280b67 AV |
988 | |
989 | logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; | |
990 | logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); | |
4916392b | 991 | if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI) |
ac280b67 | 992 | logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); |
4916392b | 993 | if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI) |
ac280b67 AV |
994 | logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); |
995 | logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); | |
996 | logio->port_id[0] = sp->fcport->d_id.b.al_pa; | |
997 | logio->port_id[1] = sp->fcport->d_id.b.area; | |
998 | logio->port_id[2] = sp->fcport->d_id.b.domain; | |
999 | logio->vp_index = sp->fcport->vp_idx; | |
1000 | } | |
1001 | ||
1002 | static void | |
1003 | qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) | |
1004 | { | |
1005 | struct qla_hw_data *ha = sp->fcport->vha->hw; | |
4916392b MI |
1006 | struct srb_ctx *ctx = sp->ctx; |
1007 | struct srb_iocb *lio = ctx->u.iocb_cmd; | |
ac280b67 AV |
1008 | uint16_t opts; |
1009 | ||
1010 | mbx->entry_type = MBX_IOCB_TYPE;; | |
1011 | SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); | |
1012 | mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); | |
4916392b MI |
1013 | opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0; |
1014 | opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0; | |
ac280b67 AV |
1015 | if (HAS_EXTENDED_IDS(ha)) { |
1016 | mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); | |
1017 | mbx->mb10 = cpu_to_le16(opts); | |
1018 | } else { | |
1019 | mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); | |
1020 | } | |
1021 | mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); | |
1022 | mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | | |
1023 | sp->fcport->d_id.b.al_pa); | |
1024 | mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); | |
1025 | } | |
1026 | ||
1027 | static void | |
1028 | qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) | |
1029 | { | |
1030 | logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; | |
1031 | logio->control_flags = | |
1032 | cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); | |
1033 | logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); | |
1034 | logio->port_id[0] = sp->fcport->d_id.b.al_pa; | |
1035 | logio->port_id[1] = sp->fcport->d_id.b.area; | |
1036 | logio->port_id[2] = sp->fcport->d_id.b.domain; | |
1037 | logio->vp_index = sp->fcport->vp_idx; | |
1038 | } | |
1039 | ||
1040 | static void | |
1041 | qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) | |
1042 | { | |
1043 | struct qla_hw_data *ha = sp->fcport->vha->hw; | |
1044 | ||
1045 | mbx->entry_type = MBX_IOCB_TYPE;; | |
1046 | SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); | |
1047 | mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); | |
1048 | mbx->mb1 = HAS_EXTENDED_IDS(ha) ? | |
1049 | cpu_to_le16(sp->fcport->loop_id): | |
1050 | cpu_to_le16(sp->fcport->loop_id << 8); | |
1051 | mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); | |
1052 | mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | | |
1053 | sp->fcport->d_id.b.al_pa); | |
1054 | mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); | |
1055 | /* Implicit: mbx->mbx10 = 0. */ | |
1056 | } | |
1057 | ||
5ff1d584 AV |
1058 | static void |
1059 | qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio) | |
1060 | { | |
1061 | logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; | |
1062 | logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC); | |
1063 | logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); | |
1064 | logio->vp_index = sp->fcport->vp_idx; | |
1065 | } | |
1066 | ||
1067 | static void | |
1068 | qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx) | |
1069 | { | |
1070 | struct qla_hw_data *ha = sp->fcport->vha->hw; | |
1071 | ||
1072 | mbx->entry_type = MBX_IOCB_TYPE; | |
1073 | SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); | |
1074 | mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE); | |
1075 | if (HAS_EXTENDED_IDS(ha)) { | |
1076 | mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); | |
1077 | mbx->mb10 = cpu_to_le16(BIT_0); | |
1078 | } else { | |
1079 | mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0); | |
1080 | } | |
1081 | mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma)); | |
1082 | mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma)); | |
1083 | mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma))); | |
1084 | mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma))); | |
1085 | mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); | |
1086 | } | |
1087 | ||
9a069e19 GM |
1088 | static void |
1089 | qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb) | |
1090 | { | |
4916392b | 1091 | struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job; |
9a069e19 GM |
1092 | |
1093 | els_iocb->entry_type = ELS_IOCB_TYPE; | |
1094 | els_iocb->entry_count = 1; | |
1095 | els_iocb->sys_define = 0; | |
1096 | els_iocb->entry_status = 0; | |
1097 | els_iocb->handle = sp->handle; | |
1098 | els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); | |
1099 | els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); | |
1100 | els_iocb->vp_index = sp->fcport->vp_idx; | |
1101 | els_iocb->sof_type = EST_SOFI3; | |
1102 | els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); | |
1103 | ||
4916392b MI |
1104 | els_iocb->opcode = |
1105 | (((struct srb_ctx *)sp->ctx)->type == SRB_ELS_CMD_RPT) ? | |
1106 | bsg_job->request->rqst_data.r_els.els_code : | |
1107 | bsg_job->request->rqst_data.h_els.command_code; | |
9a069e19 GM |
1108 | els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa; |
1109 | els_iocb->port_id[1] = sp->fcport->d_id.b.area; | |
1110 | els_iocb->port_id[2] = sp->fcport->d_id.b.domain; | |
1111 | els_iocb->control_flags = 0; | |
1112 | els_iocb->rx_byte_count = | |
1113 | cpu_to_le32(bsg_job->reply_payload.payload_len); | |
1114 | els_iocb->tx_byte_count = | |
1115 | cpu_to_le32(bsg_job->request_payload.payload_len); | |
1116 | ||
1117 | els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address | |
1118 | (bsg_job->request_payload.sg_list))); | |
1119 | els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address | |
1120 | (bsg_job->request_payload.sg_list))); | |
1121 | els_iocb->tx_len = cpu_to_le32(sg_dma_len | |
1122 | (bsg_job->request_payload.sg_list)); | |
1123 | ||
1124 | els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address | |
1125 | (bsg_job->reply_payload.sg_list))); | |
1126 | els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address | |
1127 | (bsg_job->reply_payload.sg_list))); | |
1128 | els_iocb->rx_len = cpu_to_le32(sg_dma_len | |
1129 | (bsg_job->reply_payload.sg_list)); | |
1130 | } | |
1131 | ||
1132 | static void | |
1133 | qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb) | |
1134 | { | |
1135 | uint16_t avail_dsds; | |
1136 | uint32_t *cur_dsd; | |
1137 | struct scatterlist *sg; | |
1138 | int index; | |
1139 | uint16_t tot_dsds; | |
1140 | scsi_qla_host_t *vha = sp->fcport->vha; | |
4916392b | 1141 | struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job; |
9a069e19 GM |
1142 | int loop_iterartion = 0; |
1143 | int cont_iocb_prsnt = 0; | |
1144 | int entry_count = 1; | |
1145 | ||
1146 | ct_iocb->entry_type = CT_IOCB_TYPE; | |
1147 | ct_iocb->entry_status = 0; | |
1148 | ct_iocb->sys_define = 0; | |
1149 | ct_iocb->handle = sp->handle; | |
1150 | ||
1151 | ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id); | |
1152 | ct_iocb->vp_index = sp->fcport->vp_idx; | |
1153 | ct_iocb->comp_status = __constant_cpu_to_le16(0); | |
1154 | ||
1155 | ct_iocb->cmd_dsd_count = | |
1156 | __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt); | |
1157 | ct_iocb->timeout = 0; | |
1158 | ct_iocb->rsp_dsd_count = | |
1159 | __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt); | |
1160 | ct_iocb->rsp_byte_count = | |
1161 | cpu_to_le32(bsg_job->reply_payload.payload_len); | |
1162 | ct_iocb->cmd_byte_count = | |
1163 | cpu_to_le32(bsg_job->request_payload.payload_len); | |
1164 | ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address | |
1165 | (bsg_job->request_payload.sg_list))); | |
1166 | ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address | |
1167 | (bsg_job->request_payload.sg_list))); | |
1168 | ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len | |
1169 | (bsg_job->request_payload.sg_list)); | |
1170 | ||
1171 | avail_dsds = 1; | |
1172 | cur_dsd = (uint32_t *)ct_iocb->dseg_1_address; | |
1173 | index = 0; | |
1174 | tot_dsds = bsg_job->reply_payload.sg_cnt; | |
1175 | ||
1176 | for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) { | |
1177 | dma_addr_t sle_dma; | |
1178 | cont_a64_entry_t *cont_pkt; | |
1179 | ||
1180 | /* Allocate additional continuation packets? */ | |
1181 | if (avail_dsds == 0) { | |
1182 | /* | |
1183 | * Five DSDs are available in the Cont. | |
1184 | * Type 1 IOCB. | |
1185 | */ | |
1186 | cont_pkt = qla2x00_prep_cont_type1_iocb(vha); | |
1187 | cur_dsd = (uint32_t *) cont_pkt->dseg_0_address; | |
1188 | avail_dsds = 5; | |
1189 | cont_iocb_prsnt = 1; | |
1190 | entry_count++; | |
1191 | } | |
1192 | ||
1193 | sle_dma = sg_dma_address(sg); | |
1194 | *cur_dsd++ = cpu_to_le32(LSD(sle_dma)); | |
1195 | *cur_dsd++ = cpu_to_le32(MSD(sle_dma)); | |
1196 | *cur_dsd++ = cpu_to_le32(sg_dma_len(sg)); | |
1197 | loop_iterartion++; | |
1198 | avail_dsds--; | |
1199 | } | |
1200 | ct_iocb->entry_count = entry_count; | |
1201 | } | |
1202 | ||
ac280b67 AV |
1203 | int |
1204 | qla2x00_start_sp(srb_t *sp) | |
1205 | { | |
1206 | int rval; | |
1207 | struct qla_hw_data *ha = sp->fcport->vha->hw; | |
1208 | void *pkt; | |
1209 | struct srb_ctx *ctx = sp->ctx; | |
1210 | unsigned long flags; | |
1211 | ||
1212 | rval = QLA_FUNCTION_FAILED; | |
1213 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1214 | pkt = qla2x00_alloc_iocbs(sp); | |
1215 | if (!pkt) | |
1216 | goto done; | |
1217 | ||
1218 | rval = QLA_SUCCESS; | |
1219 | switch (ctx->type) { | |
1220 | case SRB_LOGIN_CMD: | |
1221 | IS_FWI2_CAPABLE(ha) ? | |
5ff1d584 | 1222 | qla24xx_login_iocb(sp, pkt) : |
ac280b67 AV |
1223 | qla2x00_login_iocb(sp, pkt); |
1224 | break; | |
1225 | case SRB_LOGOUT_CMD: | |
1226 | IS_FWI2_CAPABLE(ha) ? | |
5ff1d584 | 1227 | qla24xx_logout_iocb(sp, pkt) : |
ac280b67 AV |
1228 | qla2x00_logout_iocb(sp, pkt); |
1229 | break; | |
9a069e19 GM |
1230 | case SRB_ELS_CMD_RPT: |
1231 | case SRB_ELS_CMD_HST: | |
1232 | qla24xx_els_iocb(sp, pkt); | |
1233 | break; | |
1234 | case SRB_CT_CMD: | |
1235 | qla24xx_ct_iocb(sp, pkt); | |
1236 | break; | |
5ff1d584 AV |
1237 | case SRB_ADISC_CMD: |
1238 | IS_FWI2_CAPABLE(ha) ? | |
1239 | qla24xx_adisc_iocb(sp, pkt) : | |
1240 | qla2x00_adisc_iocb(sp, pkt); | |
1241 | break; | |
ac280b67 AV |
1242 | default: |
1243 | break; | |
1244 | } | |
1245 | ||
1246 | wmb(); | |
1247 | qla2x00_start_iocbs(sp); | |
1248 | done: | |
1249 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1250 | return rval; | |
1251 | } |