1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Marvell 88SE64xx/88SE94xx main function |
4 | * |
5 | * Copyright 2007 Red Hat, Inc. |
6 | * Copyright 2008 Marvell. <kewei@marvell.com> |
7 | * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com> |
8 | */ |
9 | |
10 | #include "mv_sas.h" |
11 | |
12 | static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag) |
13 | { |
14 | if (task->lldd_task) { |
15 | struct mvs_slot_info *slot; |
16 | slot = task->lldd_task; |
17 | *tag = slot->slot_tag; |
18 | return 1; |
19 | } |
20 | return 0; |
21 | } |
22 | |
23 | static void mvs_tag_clear(struct mvs_info *mvi, u32 tag) |
24 | { |
25 | void *bitmap = mvi->rsvd_tags; |
26 | clear_bit(nr: tag, addr: bitmap); |
27 | } |
28 | |
29 | static void mvs_tag_free(struct mvs_info *mvi, u32 tag) |
30 | { |
31 | if (tag >= MVS_RSVD_SLOTS) |
32 | return; |
33 | |
34 | mvs_tag_clear(mvi, tag); |
35 | } |
36 | |
37 | static void mvs_tag_set(struct mvs_info *mvi, unsigned int tag) |
38 | { |
39 | void *bitmap = mvi->rsvd_tags; |
40 | set_bit(nr: tag, addr: bitmap); |
41 | } |
42 | |
43 | static int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out) |
44 | { |
45 | unsigned int index, tag; |
46 | void *bitmap = mvi->rsvd_tags; |
47 | |
48 | index = find_first_zero_bit(addr: bitmap, size: MVS_RSVD_SLOTS); |
49 | tag = index; |
50 | if (tag >= MVS_RSVD_SLOTS) |
51 | return -SAS_QUEUE_FULL; |
52 | mvs_tag_set(mvi, tag); |
53 | *tag_out = tag; |
54 | return 0; |
55 | } |
56 | |
57 | static struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev) |
58 | { |
59 | unsigned long i = 0, j = 0, hi = 0; |
60 | struct sas_ha_struct *sha = dev->port->ha; |
61 | struct mvs_info *mvi = NULL; |
62 | struct asd_sas_phy *phy; |
63 | |
64 | while (sha->sas_port[i]) { |
65 | if (sha->sas_port[i] == dev->port) { |
66 | spin_lock(lock: &sha->sas_port[i]->phy_list_lock); |
67 | phy = container_of(sha->sas_port[i]->phy_list.next, |
68 | struct asd_sas_phy, port_phy_el); |
69 | spin_unlock(lock: &sha->sas_port[i]->phy_list_lock); |
70 | j = 0; |
71 | while (sha->sas_phy[j]) { |
72 | if (sha->sas_phy[j] == phy) |
73 | break; |
74 | j++; |
75 | } |
76 | break; |
77 | } |
78 | i++; |
79 | } |
80 | hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy; |
81 | mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi]; |
82 | |
83 | return mvi; |
84 | |
85 | } |
86 | |
87 | static int mvs_find_dev_phyno(struct domain_device *dev, int *phyno) |
88 | { |
89 | unsigned long i = 0, j = 0, n = 0, num = 0; |
90 | struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; |
91 | struct mvs_info *mvi = mvi_dev->mvi_info; |
92 | struct sas_ha_struct *sha = dev->port->ha; |
93 | |
94 | while (sha->sas_port[i]) { |
95 | if (sha->sas_port[i] == dev->port) { |
96 | struct asd_sas_phy *phy; |
97 | |
98 | spin_lock(lock: &sha->sas_port[i]->phy_list_lock); |
99 | list_for_each_entry(phy, |
100 | &sha->sas_port[i]->phy_list, port_phy_el) { |
101 | j = 0; |
102 | while (sha->sas_phy[j]) { |
103 | if (sha->sas_phy[j] == phy) |
104 | break; |
105 | j++; |
106 | } |
107 | phyno[n] = (j >= mvi->chip->n_phy) ? |
108 | (j - mvi->chip->n_phy) : j; |
109 | num++; |
110 | n++; |
111 | } |
112 | spin_unlock(lock: &sha->sas_port[i]->phy_list_lock); |
113 | break; |
114 | } |
115 | i++; |
116 | } |
117 | return num; |
118 | } |
119 | |
120 | struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi, |
121 | u8 reg_set) |
122 | { |
123 | u32 dev_no; |
124 | for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) { |
125 | if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED) |
126 | continue; |
127 | |
128 | if (mvi->devices[dev_no].taskfileset == reg_set) |
129 | return &mvi->devices[dev_no]; |
130 | } |
131 | return NULL; |
132 | } |
133 | |
134 | static inline void mvs_free_reg_set(struct mvs_info *mvi, |
135 | struct mvs_device *dev) |
136 | { |
137 | if (!dev) { |
138 | mv_printk("device has been free.\n" ); |
139 | return; |
140 | } |
141 | if (dev->taskfileset == MVS_ID_NOT_MAPPED) |
142 | return; |
143 | MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset); |
144 | } |
145 | |
146 | static inline u8 mvs_assign_reg_set(struct mvs_info *mvi, |
147 | struct mvs_device *dev) |
148 | { |
149 | if (dev->taskfileset != MVS_ID_NOT_MAPPED) |
150 | return 0; |
151 | return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset); |
152 | } |
153 | |
154 | void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard) |
155 | { |
156 | u32 no; |
157 | for_each_phy(phy_mask, phy_mask, no) { |
158 | if (!(phy_mask & 1)) |
159 | continue; |
160 | MVS_CHIP_DISP->phy_reset(mvi, no, hard); |
161 | } |
162 | } |
163 | |
164 | int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, |
165 | void *funcdata) |
166 | { |
167 | int rc = 0, phy_id = sas_phy->id; |
168 | u32 tmp, i = 0, hi; |
169 | struct sas_ha_struct *sha = sas_phy->ha; |
170 | struct mvs_info *mvi = NULL; |
171 | |
172 | while (sha->sas_phy[i]) { |
173 | if (sha->sas_phy[i] == sas_phy) |
174 | break; |
175 | i++; |
176 | } |
177 | hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy; |
178 | mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi]; |
179 | |
180 | switch (func) { |
181 | case PHY_FUNC_SET_LINK_RATE: |
182 | MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata); |
183 | break; |
184 | |
185 | case PHY_FUNC_HARD_RESET: |
186 | tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id); |
187 | if (tmp & PHY_RST_HARD) |
188 | break; |
189 | MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET); |
190 | break; |
191 | |
192 | case PHY_FUNC_LINK_RESET: |
193 | MVS_CHIP_DISP->phy_enable(mvi, phy_id); |
194 | MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET); |
195 | break; |
196 | |
197 | case PHY_FUNC_DISABLE: |
198 | MVS_CHIP_DISP->phy_disable(mvi, phy_id); |
199 | break; |
200 | case PHY_FUNC_RELEASE_SPINUP_HOLD: |
201 | default: |
202 | rc = -ENOSYS; |
203 | } |
204 | msleep(msecs: 200); |
205 | return rc; |
206 | } |
207 | |
208 | void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo, |
209 | u32 off_hi, u64 sas_addr) |
210 | { |
211 | u32 lo = (u32)sas_addr; |
212 | u32 hi = (u32)(sas_addr>>32); |
213 | |
214 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo); |
215 | MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo); |
216 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi); |
217 | MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi); |
218 | } |
219 | |
220 | static void mvs_bytes_dmaed(struct mvs_info *mvi, int i, gfp_t gfp_flags) |
221 | { |
222 | struct mvs_phy *phy = &mvi->phy[i]; |
223 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
224 | |
225 | if (!phy->phy_attached) |
226 | return; |
227 | |
228 | if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK) |
229 | && phy->phy_type & PORT_TYPE_SAS) { |
230 | return; |
231 | } |
232 | |
233 | sas_notify_phy_event(phy: sas_phy, event: PHYE_OOB_DONE, gfp_flags); |
234 | |
235 | if (sas_phy->phy) { |
236 | struct sas_phy *sphy = sas_phy->phy; |
237 | |
238 | sphy->negotiated_linkrate = sas_phy->linkrate; |
239 | sphy->minimum_linkrate = phy->minimum_linkrate; |
240 | sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; |
241 | sphy->maximum_linkrate = phy->maximum_linkrate; |
242 | sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate(); |
243 | } |
244 | |
245 | if (phy->phy_type & PORT_TYPE_SAS) { |
246 | struct sas_identify_frame *id; |
247 | |
248 | id = (struct sas_identify_frame *)phy->frame_rcvd; |
249 | id->dev_type = phy->identify.device_type; |
250 | id->initiator_bits = SAS_PROTOCOL_ALL; |
251 | id->target_bits = phy->identify.target_port_protocols; |
252 | |
253 | /* direct attached SAS device */ |
254 | if (phy->att_dev_info & PORT_SSP_TRGT_MASK) { |
255 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT); |
256 | MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x00); |
257 | } |
258 | } else if (phy->phy_type & PORT_TYPE_SATA) { |
259 | /*Nothing*/ |
260 | } |
261 | mv_dprintk("phy %d byte dmaded.\n" , i + mvi->id * mvi->chip->n_phy); |
262 | |
263 | sas_phy->frame_rcvd_size = phy->frame_rcvd_size; |
264 | |
265 | sas_notify_port_event(phy: sas_phy, event: PORTE_BYTES_DMAED, gfp_flags); |
266 | } |
267 | |
268 | void mvs_scan_start(struct Scsi_Host *shost) |
269 | { |
270 | int i, j; |
271 | unsigned short core_nr; |
272 | struct mvs_info *mvi; |
273 | struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); |
274 | struct mvs_prv_info *mvs_prv = sha->lldd_ha; |
275 | |
276 | core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host; |
277 | |
278 | for (j = 0; j < core_nr; j++) { |
279 | mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j]; |
280 | for (i = 0; i < mvi->chip->n_phy; ++i) |
281 | mvs_bytes_dmaed(mvi, i, GFP_KERNEL); |
282 | } |
283 | mvs_prv->scan_finished = 1; |
284 | } |
285 | |
286 | int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time) |
287 | { |
288 | struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); |
289 | struct mvs_prv_info *mvs_prv = sha->lldd_ha; |
290 | |
291 | if (mvs_prv->scan_finished == 0) |
292 | return 0; |
293 | |
294 | sas_drain_work(ha: sha); |
295 | return 1; |
296 | } |
297 | |
298 | static int mvs_task_prep_smp(struct mvs_info *mvi, |
299 | struct mvs_task_exec_info *tei) |
300 | { |
301 | int elem, rc, i; |
302 | struct sas_ha_struct *sha = mvi->sas; |
303 | struct sas_task *task = tei->task; |
304 | struct mvs_cmd_hdr *hdr = tei->hdr; |
305 | struct domain_device *dev = task->dev; |
306 | struct asd_sas_port *sas_port = dev->port; |
307 | struct sas_phy *sphy = dev->phy; |
308 | struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number]; |
309 | struct scatterlist *sg_req, *sg_resp; |
310 | u32 req_len, resp_len, tag = tei->tag; |
311 | void *buf_tmp; |
312 | u8 *buf_oaf; |
313 | dma_addr_t buf_tmp_dma; |
314 | void *buf_prd; |
315 | struct mvs_slot_info *slot = &mvi->slot_info[tag]; |
316 | u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT); |
317 | |
318 | /* |
319 | * DMA-map SMP request, response buffers |
320 | */ |
321 | sg_req = &task->smp_task.smp_req; |
322 | elem = dma_map_sg(mvi->dev, sg_req, 1, DMA_TO_DEVICE); |
323 | if (!elem) |
324 | return -ENOMEM; |
325 | req_len = sg_dma_len(sg_req); |
326 | |
327 | sg_resp = &task->smp_task.smp_resp; |
328 | elem = dma_map_sg(mvi->dev, sg_resp, 1, DMA_FROM_DEVICE); |
329 | if (!elem) { |
330 | rc = -ENOMEM; |
331 | goto err_out; |
332 | } |
333 | resp_len = SB_RFB_MAX; |
334 | |
335 | /* must be in dwords */ |
336 | if ((req_len & 0x3) || (resp_len & 0x3)) { |
337 | rc = -EINVAL; |
338 | goto err_out_2; |
339 | } |
340 | |
341 | /* |
342 | * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs |
343 | */ |
344 | |
345 | /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */ |
346 | buf_tmp = slot->buf; |
347 | buf_tmp_dma = slot->buf_dma; |
348 | |
349 | hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req)); |
350 | |
351 | /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ |
352 | buf_oaf = buf_tmp; |
353 | hdr->open_frame = cpu_to_le64(buf_tmp_dma); |
354 | |
355 | buf_tmp += MVS_OAF_SZ; |
356 | buf_tmp_dma += MVS_OAF_SZ; |
357 | |
358 | /* region 3: PRD table *********************************** */ |
359 | buf_prd = buf_tmp; |
360 | if (tei->n_elem) |
361 | hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); |
362 | else |
363 | hdr->prd_tbl = 0; |
364 | |
365 | i = MVS_CHIP_DISP->prd_size() * tei->n_elem; |
366 | buf_tmp += i; |
367 | buf_tmp_dma += i; |
368 | |
369 | /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ |
370 | slot->response = buf_tmp; |
371 | hdr->status_buf = cpu_to_le64(buf_tmp_dma); |
372 | if (mvi->flags & MVF_FLAG_SOC) |
373 | hdr->reserved[0] = 0; |
374 | |
375 | /* |
376 | * Fill in TX ring and command slot header |
377 | */ |
378 | slot->tx = mvi->tx_prod; |
379 | mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) | |
380 | TXQ_MODE_I | tag | |
381 | (MVS_PHY_ID << TXQ_PHY_SHIFT)); |
382 | |
383 | hdr->flags |= flags; |
384 | hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4)); |
385 | hdr->tags = cpu_to_le32(tag); |
386 | hdr->data_len = 0; |
387 | |
388 | /* generate open address frame hdr (first 12 bytes) */ |
389 | /* initiator, SMP, ftype 1h */ |
390 | buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01; |
391 | buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; |
392 | *(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */ |
393 | memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); |
394 | |
395 | /* fill in PRD (scatter/gather) table, if any */ |
396 | MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); |
397 | |
398 | return 0; |
399 | |
400 | err_out_2: |
401 | dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1, |
402 | DMA_FROM_DEVICE); |
403 | err_out: |
404 | dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1, |
405 | DMA_TO_DEVICE); |
406 | return rc; |
407 | } |
408 | |
409 | static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag) |
410 | { |
411 | struct ata_queued_cmd *qc = task->uldd_task; |
412 | |
413 | if (qc) { |
414 | if (qc->tf.command == ATA_CMD_FPDMA_WRITE || |
415 | qc->tf.command == ATA_CMD_FPDMA_READ || |
416 | qc->tf.command == ATA_CMD_FPDMA_RECV || |
417 | qc->tf.command == ATA_CMD_FPDMA_SEND || |
418 | qc->tf.command == ATA_CMD_NCQ_NON_DATA) { |
419 | *tag = qc->tag; |
420 | return 1; |
421 | } |
422 | } |
423 | |
424 | return 0; |
425 | } |
426 | |
427 | static int mvs_task_prep_ata(struct mvs_info *mvi, |
428 | struct mvs_task_exec_info *tei) |
429 | { |
430 | struct sas_task *task = tei->task; |
431 | struct domain_device *dev = task->dev; |
432 | struct mvs_device *mvi_dev = dev->lldd_dev; |
433 | struct mvs_cmd_hdr *hdr = tei->hdr; |
434 | struct asd_sas_port *sas_port = dev->port; |
435 | struct mvs_slot_info *slot; |
436 | void *buf_prd; |
437 | u32 tag = tei->tag, hdr_tag; |
438 | u32 flags, del_q; |
439 | void *buf_tmp; |
440 | u8 *buf_cmd, *buf_oaf; |
441 | dma_addr_t buf_tmp_dma; |
442 | u32 i, req_len, resp_len; |
443 | const u32 max_resp_len = SB_RFB_MAX; |
444 | |
445 | if (mvs_assign_reg_set(mvi, dev: mvi_dev) == MVS_ID_NOT_MAPPED) { |
446 | mv_dprintk("Have not enough regiset for dev %d.\n" , |
447 | mvi_dev->device_id); |
448 | return -EBUSY; |
449 | } |
450 | slot = &mvi->slot_info[tag]; |
451 | slot->tx = mvi->tx_prod; |
452 | del_q = TXQ_MODE_I | tag | |
453 | (TXQ_CMD_STP << TXQ_CMD_SHIFT) | |
454 | ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) | |
455 | (mvi_dev->taskfileset << TXQ_SRS_SHIFT); |
456 | mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q); |
457 | |
458 | if (task->data_dir == DMA_FROM_DEVICE) |
459 | flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT); |
460 | else |
461 | flags = (tei->n_elem << MCH_PRD_LEN_SHIFT); |
462 | |
463 | if (task->ata_task.use_ncq) |
464 | flags |= MCH_FPDMA; |
465 | if (dev->sata_dev.class == ATA_DEV_ATAPI) { |
466 | if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI) |
467 | flags |= MCH_ATAPI; |
468 | } |
469 | |
470 | hdr->flags = cpu_to_le32(flags); |
471 | |
472 | if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, tag: &hdr_tag)) |
473 | task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3); |
474 | else |
475 | hdr_tag = tag; |
476 | |
477 | hdr->tags = cpu_to_le32(hdr_tag); |
478 | |
479 | hdr->data_len = cpu_to_le32(task->total_xfer_len); |
480 | |
481 | /* |
482 | * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs |
483 | */ |
484 | |
485 | /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */ |
486 | buf_cmd = buf_tmp = slot->buf; |
487 | buf_tmp_dma = slot->buf_dma; |
488 | |
489 | hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma); |
490 | |
491 | buf_tmp += MVS_ATA_CMD_SZ; |
492 | buf_tmp_dma += MVS_ATA_CMD_SZ; |
493 | |
494 | /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ |
495 | /* used for STP. unused for SATA? */ |
496 | buf_oaf = buf_tmp; |
497 | hdr->open_frame = cpu_to_le64(buf_tmp_dma); |
498 | |
499 | buf_tmp += MVS_OAF_SZ; |
500 | buf_tmp_dma += MVS_OAF_SZ; |
501 | |
502 | /* region 3: PRD table ********************************************* */ |
503 | buf_prd = buf_tmp; |
504 | |
505 | if (tei->n_elem) |
506 | hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); |
507 | else |
508 | hdr->prd_tbl = 0; |
509 | i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count(); |
510 | |
511 | buf_tmp += i; |
512 | buf_tmp_dma += i; |
513 | |
514 | /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ |
515 | slot->response = buf_tmp; |
516 | hdr->status_buf = cpu_to_le64(buf_tmp_dma); |
517 | if (mvi->flags & MVF_FLAG_SOC) |
518 | hdr->reserved[0] = 0; |
519 | |
520 | req_len = sizeof(struct host_to_dev_fis); |
521 | resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ - |
522 | sizeof(struct mvs_err_info) - i; |
523 | |
524 | /* request, response lengths */ |
525 | resp_len = min(resp_len, max_resp_len); |
526 | hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4)); |
527 | |
528 | if (likely(!task->ata_task.device_control_reg_update)) |
529 | task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */ |
530 | /* fill in command FIS and ATAPI CDB */ |
531 | memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis)); |
532 | if (dev->sata_dev.class == ATA_DEV_ATAPI) |
533 | memcpy(buf_cmd + STP_ATAPI_CMD, |
534 | task->ata_task.atapi_packet, 16); |
535 | |
536 | /* generate open address frame hdr (first 12 bytes) */ |
537 | /* initiator, STP, ftype 1h */ |
538 | buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1; |
539 | buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; |
540 | *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1); |
541 | memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); |
542 | |
543 | /* fill in PRD (scatter/gather) table, if any */ |
544 | MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); |
545 | |
546 | if (task->data_dir == DMA_FROM_DEVICE) |
547 | MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask, |
548 | TRASH_BUCKET_SIZE, tei->n_elem, buf_prd); |
549 | |
550 | return 0; |
551 | } |
552 | |
553 | static int mvs_task_prep_ssp(struct mvs_info *mvi, |
554 | struct mvs_task_exec_info *tei, int is_tmf, |
555 | struct sas_tmf_task *tmf) |
556 | { |
557 | struct sas_task *task = tei->task; |
558 | struct mvs_cmd_hdr *hdr = tei->hdr; |
559 | struct mvs_port *port = tei->port; |
560 | struct domain_device *dev = task->dev; |
561 | struct mvs_device *mvi_dev = dev->lldd_dev; |
562 | struct asd_sas_port *sas_port = dev->port; |
563 | struct mvs_slot_info *slot; |
564 | void *buf_prd; |
565 | struct ssp_frame_hdr *ssp_hdr; |
566 | void *buf_tmp; |
567 | u8 *buf_cmd, *buf_oaf; |
568 | dma_addr_t buf_tmp_dma; |
569 | u32 flags; |
570 | u32 resp_len, req_len, i, tag = tei->tag; |
571 | const u32 max_resp_len = SB_RFB_MAX; |
572 | u32 phy_mask; |
573 | |
574 | slot = &mvi->slot_info[tag]; |
575 | |
576 | phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap : |
577 | sas_port->phy_mask) & TXQ_PHY_MASK; |
578 | |
579 | slot->tx = mvi->tx_prod; |
580 | mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag | |
581 | (TXQ_CMD_SSP << TXQ_CMD_SHIFT) | |
582 | (phy_mask << TXQ_PHY_SHIFT)); |
583 | |
584 | flags = MCH_RETRY; |
585 | if (is_tmf) |
586 | flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT); |
587 | else |
588 | flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT); |
589 | |
590 | hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT)); |
591 | hdr->tags = cpu_to_le32(tag); |
592 | hdr->data_len = cpu_to_le32(task->total_xfer_len); |
593 | |
594 | /* |
595 | * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs |
596 | */ |
597 | |
598 | /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */ |
599 | buf_cmd = buf_tmp = slot->buf; |
600 | buf_tmp_dma = slot->buf_dma; |
601 | |
602 | hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma); |
603 | |
604 | buf_tmp += MVS_SSP_CMD_SZ; |
605 | buf_tmp_dma += MVS_SSP_CMD_SZ; |
606 | |
607 | /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */ |
608 | buf_oaf = buf_tmp; |
609 | hdr->open_frame = cpu_to_le64(buf_tmp_dma); |
610 | |
611 | buf_tmp += MVS_OAF_SZ; |
612 | buf_tmp_dma += MVS_OAF_SZ; |
613 | |
614 | /* region 3: PRD table ********************************************* */ |
615 | buf_prd = buf_tmp; |
616 | if (tei->n_elem) |
617 | hdr->prd_tbl = cpu_to_le64(buf_tmp_dma); |
618 | else |
619 | hdr->prd_tbl = 0; |
620 | |
621 | i = MVS_CHIP_DISP->prd_size() * tei->n_elem; |
622 | buf_tmp += i; |
623 | buf_tmp_dma += i; |
624 | |
625 | /* region 4: status buffer (larger the PRD, smaller this buf) ****** */ |
626 | slot->response = buf_tmp; |
627 | hdr->status_buf = cpu_to_le64(buf_tmp_dma); |
628 | if (mvi->flags & MVF_FLAG_SOC) |
629 | hdr->reserved[0] = 0; |
630 | |
631 | resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ - |
632 | sizeof(struct mvs_err_info) - i; |
633 | resp_len = min(resp_len, max_resp_len); |
634 | |
635 | req_len = sizeof(struct ssp_frame_hdr) + 28; |
636 | |
637 | /* request, response lengths */ |
638 | hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4)); |
639 | |
640 | /* generate open address frame hdr (first 12 bytes) */ |
641 | /* initiator, SSP, ftype 1h */ |
642 | buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1; |
643 | buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf; |
644 | *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1); |
645 | memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE); |
646 | |
647 | /* fill in SSP frame header (Command Table.SSP frame header) */ |
648 | ssp_hdr = (struct ssp_frame_hdr *)buf_cmd; |
649 | |
650 | if (is_tmf) |
651 | ssp_hdr->frame_type = SSP_TASK; |
652 | else |
653 | ssp_hdr->frame_type = SSP_COMMAND; |
654 | |
655 | memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr, |
656 | HASHED_SAS_ADDR_SIZE); |
657 | memcpy(ssp_hdr->hashed_src_addr, |
658 | dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE); |
659 | ssp_hdr->tag = cpu_to_be16(tag); |
660 | |
661 | /* fill in IU for TASK and Command Frame */ |
662 | buf_cmd += sizeof(*ssp_hdr); |
663 | memcpy(buf_cmd, &task->ssp_task.LUN, 8); |
664 | |
665 | if (ssp_hdr->frame_type != SSP_TASK) { |
666 | buf_cmd[9] = task->ssp_task.task_attr; |
667 | memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd, |
668 | task->ssp_task.cmd->cmd_len); |
669 | } else{ |
670 | buf_cmd[10] = tmf->tmf; |
671 | switch (tmf->tmf) { |
672 | case TMF_ABORT_TASK: |
673 | case TMF_QUERY_TASK: |
674 | buf_cmd[12] = |
675 | (tmf->tag_of_task_to_be_managed >> 8) & 0xff; |
676 | buf_cmd[13] = |
677 | tmf->tag_of_task_to_be_managed & 0xff; |
678 | break; |
679 | default: |
680 | break; |
681 | } |
682 | } |
683 | /* fill in PRD (scatter/gather) table, if any */ |
684 | MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd); |
685 | return 0; |
686 | } |
687 | |
688 | #define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED))) |
689 | static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf, |
690 | struct sas_tmf_task *tmf, int *pass) |
691 | { |
692 | struct domain_device *dev = task->dev; |
693 | struct mvs_device *mvi_dev = dev->lldd_dev; |
694 | struct mvs_task_exec_info tei; |
695 | struct mvs_slot_info *slot; |
696 | u32 tag = 0xdeadbeef, n_elem = 0; |
697 | struct request *rq; |
698 | int rc = 0; |
699 | |
700 | if (!dev->port) { |
701 | struct task_status_struct *tsm = &task->task_status; |
702 | |
703 | tsm->resp = SAS_TASK_UNDELIVERED; |
704 | tsm->stat = SAS_PHY_DOWN; |
705 | /* |
706 | * libsas will use dev->port, should |
707 | * not call task_done for sata |
708 | */ |
709 | if (dev->dev_type != SAS_SATA_DEV) |
710 | task->task_done(task); |
711 | return rc; |
712 | } |
713 | |
714 | if (DEV_IS_GONE(mvi_dev)) { |
715 | if (mvi_dev) |
716 | mv_dprintk("device %d not ready.\n" , |
717 | mvi_dev->device_id); |
718 | else |
719 | mv_dprintk("device %016llx not ready.\n" , |
720 | SAS_ADDR(dev->sas_addr)); |
721 | |
722 | rc = SAS_PHY_DOWN; |
723 | return rc; |
724 | } |
725 | tei.port = dev->port->lldd_port; |
726 | if (tei.port && !tei.port->port_attached && !tmf) { |
727 | if (sas_protocol_ata(proto: task->task_proto)) { |
728 | struct task_status_struct *ts = &task->task_status; |
729 | mv_dprintk("SATA/STP port %d does not attach" |
730 | "device.\n" , dev->port->id); |
731 | ts->resp = SAS_TASK_COMPLETE; |
732 | ts->stat = SAS_PHY_DOWN; |
733 | |
734 | task->task_done(task); |
735 | |
736 | } else { |
737 | struct task_status_struct *ts = &task->task_status; |
738 | mv_dprintk("SAS port %d does not attach" |
739 | "device.\n" , dev->port->id); |
740 | ts->resp = SAS_TASK_UNDELIVERED; |
741 | ts->stat = SAS_PHY_DOWN; |
742 | task->task_done(task); |
743 | } |
744 | return rc; |
745 | } |
746 | |
747 | if (!sas_protocol_ata(proto: task->task_proto)) { |
748 | if (task->num_scatter) { |
749 | n_elem = dma_map_sg(mvi->dev, |
750 | task->scatter, |
751 | task->num_scatter, |
752 | task->data_dir); |
753 | if (!n_elem) { |
754 | rc = -ENOMEM; |
755 | goto prep_out; |
756 | } |
757 | } |
758 | } else { |
759 | n_elem = task->num_scatter; |
760 | } |
761 | |
762 | rq = sas_task_find_rq(task); |
763 | if (rq) { |
764 | tag = rq->tag + MVS_RSVD_SLOTS; |
765 | } else { |
766 | rc = mvs_tag_alloc(mvi, tag_out: &tag); |
767 | if (rc) |
768 | goto err_out; |
769 | } |
770 | |
771 | slot = &mvi->slot_info[tag]; |
772 | |
773 | task->lldd_task = NULL; |
774 | slot->n_elem = n_elem; |
775 | slot->slot_tag = tag; |
776 | |
777 | slot->buf = dma_pool_zalloc(pool: mvi->dma_pool, GFP_ATOMIC, handle: &slot->buf_dma); |
778 | if (!slot->buf) { |
779 | rc = -ENOMEM; |
780 | goto err_out_tag; |
781 | } |
782 | |
783 | tei.task = task; |
784 | tei.hdr = &mvi->slot[tag]; |
785 | tei.tag = tag; |
786 | tei.n_elem = n_elem; |
787 | switch (task->task_proto) { |
788 | case SAS_PROTOCOL_SMP: |
789 | rc = mvs_task_prep_smp(mvi, tei: &tei); |
790 | break; |
791 | case SAS_PROTOCOL_SSP: |
792 | rc = mvs_task_prep_ssp(mvi, tei: &tei, is_tmf, tmf); |
793 | break; |
794 | case SAS_PROTOCOL_SATA: |
795 | case SAS_PROTOCOL_STP: |
796 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: |
797 | rc = mvs_task_prep_ata(mvi, tei: &tei); |
798 | break; |
799 | default: |
800 | dev_printk(KERN_ERR, mvi->dev, |
801 | "unknown sas_task proto: 0x%x\n" , |
802 | task->task_proto); |
803 | rc = -EINVAL; |
804 | break; |
805 | } |
806 | |
807 | if (rc) { |
808 | mv_dprintk("rc is %x\n" , rc); |
809 | goto err_out_slot_buf; |
810 | } |
811 | slot->task = task; |
812 | slot->port = tei.port; |
813 | task->lldd_task = slot; |
814 | list_add_tail(new: &slot->entry, head: &tei.port->list); |
815 | |
816 | mvi_dev->running_req++; |
817 | ++(*pass); |
818 | mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1); |
819 | |
820 | return rc; |
821 | |
822 | err_out_slot_buf: |
823 | dma_pool_free(pool: mvi->dma_pool, vaddr: slot->buf, addr: slot->buf_dma); |
824 | err_out_tag: |
825 | mvs_tag_free(mvi, tag); |
826 | err_out: |
827 | |
828 | dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n" , rc); |
829 | if (!sas_protocol_ata(proto: task->task_proto)) |
830 | if (n_elem) |
831 | dma_unmap_sg(mvi->dev, task->scatter, n_elem, |
832 | task->data_dir); |
833 | prep_out: |
834 | return rc; |
835 | } |
836 | |
837 | int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags) |
838 | { |
839 | struct mvs_info *mvi = NULL; |
840 | u32 rc = 0; |
841 | u32 pass = 0; |
842 | unsigned long flags = 0; |
843 | struct sas_tmf_task *tmf = task->tmf; |
844 | int is_tmf = !!task->tmf; |
845 | |
846 | mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info; |
847 | |
848 | spin_lock_irqsave(&mvi->lock, flags); |
849 | rc = mvs_task_prep(task, mvi, is_tmf, tmf, pass: &pass); |
850 | if (rc) |
851 | dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n" , rc); |
852 | |
853 | if (likely(pass)) |
854 | MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) & |
855 | (MVS_CHIP_SLOT_SZ - 1)); |
856 | spin_unlock_irqrestore(lock: &mvi->lock, flags); |
857 | |
858 | return rc; |
859 | } |
860 | |
861 | static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc) |
862 | { |
863 | u32 slot_idx = rx_desc & RXQ_SLOT_MASK; |
864 | mvs_tag_free(mvi, tag: slot_idx); |
865 | } |
866 | |
867 | static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task, |
868 | struct mvs_slot_info *slot, u32 slot_idx) |
869 | { |
870 | if (!slot) |
871 | return; |
872 | if (!slot->task) |
873 | return; |
874 | if (!sas_protocol_ata(proto: task->task_proto)) |
875 | if (slot->n_elem) |
876 | dma_unmap_sg(mvi->dev, task->scatter, |
877 | slot->n_elem, task->data_dir); |
878 | |
879 | switch (task->task_proto) { |
880 | case SAS_PROTOCOL_SMP: |
881 | dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1, |
882 | DMA_FROM_DEVICE); |
883 | dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1, |
884 | DMA_TO_DEVICE); |
885 | break; |
886 | |
887 | case SAS_PROTOCOL_SATA: |
888 | case SAS_PROTOCOL_STP: |
889 | case SAS_PROTOCOL_SSP: |
890 | default: |
891 | /* do nothing */ |
892 | break; |
893 | } |
894 | |
895 | if (slot->buf) { |
896 | dma_pool_free(pool: mvi->dma_pool, vaddr: slot->buf, addr: slot->buf_dma); |
897 | slot->buf = NULL; |
898 | } |
899 | list_del_init(entry: &slot->entry); |
900 | task->lldd_task = NULL; |
901 | slot->task = NULL; |
902 | slot->port = NULL; |
903 | slot->slot_tag = 0xFFFFFFFF; |
904 | mvs_slot_free(mvi, rx_desc: slot_idx); |
905 | } |
906 | |
907 | static void mvs_update_wideport(struct mvs_info *mvi, int phy_no) |
908 | { |
909 | struct mvs_phy *phy = &mvi->phy[phy_no]; |
910 | struct mvs_port *port = phy->port; |
911 | int j, no; |
912 | |
913 | for_each_phy(port->wide_port_phymap, j, no) { |
914 | if (j & 1) { |
915 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, no, |
916 | PHYR_WIDE_PORT); |
917 | MVS_CHIP_DISP->write_port_cfg_data(mvi, no, |
918 | port->wide_port_phymap); |
919 | } else { |
920 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, no, |
921 | PHYR_WIDE_PORT); |
922 | MVS_CHIP_DISP->write_port_cfg_data(mvi, no, |
923 | 0); |
924 | } |
925 | } |
926 | } |
927 | |
928 | static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i) |
929 | { |
930 | u32 tmp; |
931 | struct mvs_phy *phy = &mvi->phy[i]; |
932 | struct mvs_port *port = phy->port; |
933 | |
934 | tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i); |
935 | if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) { |
936 | if (!port) |
937 | phy->phy_attached = 1; |
938 | return tmp; |
939 | } |
940 | |
941 | if (port) { |
942 | if (phy->phy_type & PORT_TYPE_SAS) { |
943 | port->wide_port_phymap &= ~(1U << i); |
944 | if (!port->wide_port_phymap) |
945 | port->port_attached = 0; |
946 | mvs_update_wideport(mvi, phy_no: i); |
947 | } else if (phy->phy_type & PORT_TYPE_SATA) |
948 | port->port_attached = 0; |
949 | phy->port = NULL; |
950 | phy->phy_attached = 0; |
951 | phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA); |
952 | } |
953 | return 0; |
954 | } |
955 | |
956 | static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf) |
957 | { |
958 | u32 *s = (u32 *) buf; |
959 | |
960 | if (!s) |
961 | return NULL; |
962 | |
963 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3); |
964 | s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); |
965 | |
966 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2); |
967 | s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); |
968 | |
969 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1); |
970 | s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); |
971 | |
972 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0); |
973 | s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i)); |
974 | |
975 | if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01)) |
976 | s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10); |
977 | |
978 | return s; |
979 | } |
980 | |
981 | static u32 mvs_is_sig_fis_received(u32 irq_status) |
982 | { |
983 | return irq_status & PHYEV_SIG_FIS; |
984 | } |
985 | |
986 | static void mvs_sig_remove_timer(struct mvs_phy *phy) |
987 | { |
988 | if (phy->timer.function) |
989 | del_timer(timer: &phy->timer); |
990 | phy->timer.function = NULL; |
991 | } |
992 | |
993 | void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st) |
994 | { |
995 | struct mvs_phy *phy = &mvi->phy[i]; |
996 | struct sas_identify_frame *id; |
997 | |
998 | id = (struct sas_identify_frame *)phy->frame_rcvd; |
999 | |
1000 | if (get_st) { |
1001 | phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i); |
1002 | phy->phy_status = mvs_is_phy_ready(mvi, i); |
1003 | } |
1004 | |
1005 | if (phy->phy_status) { |
1006 | int oob_done = 0; |
1007 | struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy; |
1008 | |
1009 | oob_done = MVS_CHIP_DISP->oob_done(mvi, i); |
1010 | |
1011 | MVS_CHIP_DISP->fix_phy_info(mvi, i, id); |
1012 | if (phy->phy_type & PORT_TYPE_SATA) { |
1013 | phy->identify.target_port_protocols = SAS_PROTOCOL_STP; |
1014 | if (mvs_is_sig_fis_received(irq_status: phy->irq_status)) { |
1015 | mvs_sig_remove_timer(phy); |
1016 | phy->phy_attached = 1; |
1017 | phy->att_dev_sas_addr = |
1018 | i + mvi->id * mvi->chip->n_phy; |
1019 | if (oob_done) |
1020 | sas_phy->oob_mode = SATA_OOB_MODE; |
1021 | phy->frame_rcvd_size = |
1022 | sizeof(struct dev_to_host_fis); |
1023 | mvs_get_d2h_reg(mvi, i, buf: id); |
1024 | } else { |
1025 | u32 tmp; |
1026 | dev_printk(KERN_DEBUG, mvi->dev, |
1027 | "Phy%d : No sig fis\n" , i); |
1028 | tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i); |
1029 | MVS_CHIP_DISP->write_port_irq_mask(mvi, i, |
1030 | tmp | PHYEV_SIG_FIS); |
1031 | phy->phy_attached = 0; |
1032 | phy->phy_type &= ~PORT_TYPE_SATA; |
1033 | goto out_done; |
1034 | } |
1035 | } else if (phy->phy_type & PORT_TYPE_SAS |
1036 | || phy->att_dev_info & PORT_SSP_INIT_MASK) { |
1037 | phy->phy_attached = 1; |
1038 | phy->identify.device_type = |
1039 | phy->att_dev_info & PORT_DEV_TYPE_MASK; |
1040 | |
1041 | if (phy->identify.device_type == SAS_END_DEVICE) |
1042 | phy->identify.target_port_protocols = |
1043 | SAS_PROTOCOL_SSP; |
1044 | else if (phy->identify.device_type != SAS_PHY_UNUSED) |
1045 | phy->identify.target_port_protocols = |
1046 | SAS_PROTOCOL_SMP; |
1047 | if (oob_done) |
1048 | sas_phy->oob_mode = SAS_OOB_MODE; |
1049 | phy->frame_rcvd_size = |
1050 | sizeof(struct sas_identify_frame); |
1051 | } |
1052 | memcpy(sas_phy->attached_sas_addr, |
1053 | &phy->att_dev_sas_addr, SAS_ADDR_SIZE); |
1054 | |
1055 | if (MVS_CHIP_DISP->phy_work_around) |
1056 | MVS_CHIP_DISP->phy_work_around(mvi, i); |
1057 | } |
1058 | mv_dprintk("phy %d attach dev info is %x\n" , |
1059 | i + mvi->id * mvi->chip->n_phy, phy->att_dev_info); |
1060 | mv_dprintk("phy %d attach sas addr is %llx\n" , |
1061 | i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr); |
1062 | out_done: |
1063 | if (get_st) |
1064 | MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status); |
1065 | } |
1066 | |
1067 | static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock) |
1068 | { |
1069 | struct sas_ha_struct *sas_ha = sas_phy->ha; |
1070 | struct mvs_info *mvi = NULL; int i = 0, hi; |
1071 | struct mvs_phy *phy = sas_phy->lldd_phy; |
1072 | struct asd_sas_port *sas_port = sas_phy->port; |
1073 | struct mvs_port *port; |
1074 | unsigned long flags = 0; |
1075 | if (!sas_port) |
1076 | return; |
1077 | |
1078 | while (sas_ha->sas_phy[i]) { |
1079 | if (sas_ha->sas_phy[i] == sas_phy) |
1080 | break; |
1081 | i++; |
1082 | } |
1083 | hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy; |
1084 | mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi]; |
1085 | if (i >= mvi->chip->n_phy) |
1086 | port = &mvi->port[i - mvi->chip->n_phy]; |
1087 | else |
1088 | port = &mvi->port[i]; |
1089 | if (lock) |
1090 | spin_lock_irqsave(&mvi->lock, flags); |
1091 | port->port_attached = 1; |
1092 | phy->port = port; |
1093 | sas_port->lldd_port = port; |
1094 | if (phy->phy_type & PORT_TYPE_SAS) { |
1095 | port->wide_port_phymap = sas_port->phy_mask; |
1096 | mv_printk("set wide port phy map %x\n" , sas_port->phy_mask); |
1097 | mvs_update_wideport(mvi, phy_no: sas_phy->id); |
1098 | |
1099 | /* direct attached SAS device */ |
1100 | if (phy->att_dev_info & PORT_SSP_TRGT_MASK) { |
1101 | MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT); |
1102 | MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04); |
1103 | } |
1104 | } |
1105 | if (lock) |
1106 | spin_unlock_irqrestore(lock: &mvi->lock, flags); |
1107 | } |
1108 | |
1109 | static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock) |
1110 | { |
1111 | struct domain_device *dev; |
1112 | struct mvs_phy *phy = sas_phy->lldd_phy; |
1113 | struct mvs_info *mvi = phy->mvi; |
1114 | struct asd_sas_port *port = sas_phy->port; |
1115 | int phy_no = 0; |
1116 | |
1117 | while (phy != &mvi->phy[phy_no]) { |
1118 | phy_no++; |
1119 | if (phy_no >= MVS_MAX_PHYS) |
1120 | return; |
1121 | } |
1122 | list_for_each_entry(dev, &port->dev_list, dev_list_node) |
1123 | mvs_do_release_task(mvi: phy->mvi, phy_no, dev); |
1124 | |
1125 | } |
1126 | |
1127 | |
1128 | void mvs_port_formed(struct asd_sas_phy *sas_phy) |
1129 | { |
1130 | mvs_port_notify_formed(sas_phy, lock: 1); |
1131 | } |
1132 | |
1133 | void mvs_port_deformed(struct asd_sas_phy *sas_phy) |
1134 | { |
1135 | mvs_port_notify_deformed(sas_phy, lock: 1); |
1136 | } |
1137 | |
1138 | static struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi) |
1139 | { |
1140 | u32 dev; |
1141 | for (dev = 0; dev < MVS_MAX_DEVICES; dev++) { |
1142 | if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) { |
1143 | mvi->devices[dev].device_id = dev; |
1144 | return &mvi->devices[dev]; |
1145 | } |
1146 | } |
1147 | |
1148 | if (dev == MVS_MAX_DEVICES) |
1149 | mv_printk("max support %d devices, ignore ..\n" , |
1150 | MVS_MAX_DEVICES); |
1151 | |
1152 | return NULL; |
1153 | } |
1154 | |
1155 | static void mvs_free_dev(struct mvs_device *mvi_dev) |
1156 | { |
1157 | u32 id = mvi_dev->device_id; |
1158 | memset(mvi_dev, 0, sizeof(*mvi_dev)); |
1159 | mvi_dev->device_id = id; |
1160 | mvi_dev->dev_type = SAS_PHY_UNUSED; |
1161 | mvi_dev->dev_status = MVS_DEV_NORMAL; |
1162 | mvi_dev->taskfileset = MVS_ID_NOT_MAPPED; |
1163 | } |
1164 | |
1165 | static int mvs_dev_found_notify(struct domain_device *dev, int lock) |
1166 | { |
1167 | unsigned long flags = 0; |
1168 | int res = 0; |
1169 | struct mvs_info *mvi = NULL; |
1170 | struct domain_device *parent_dev = dev->parent; |
1171 | struct mvs_device *mvi_device; |
1172 | |
1173 | mvi = mvs_find_dev_mvi(dev); |
1174 | |
1175 | if (lock) |
1176 | spin_lock_irqsave(&mvi->lock, flags); |
1177 | |
1178 | mvi_device = mvs_alloc_dev(mvi); |
1179 | if (!mvi_device) { |
1180 | res = -1; |
1181 | goto found_out; |
1182 | } |
1183 | dev->lldd_dev = mvi_device; |
1184 | mvi_device->dev_status = MVS_DEV_NORMAL; |
1185 | mvi_device->dev_type = dev->dev_type; |
1186 | mvi_device->mvi_info = mvi; |
1187 | mvi_device->sas_device = dev; |
1188 | if (parent_dev && dev_is_expander(type: parent_dev->dev_type)) { |
1189 | int phy_id; |
1190 | |
1191 | phy_id = sas_find_attached_phy_id(ex_dev: &parent_dev->ex_dev, dev); |
1192 | if (phy_id < 0) { |
1193 | mv_printk("Error: no attached dev:%016llx" |
1194 | "at ex:%016llx.\n" , |
1195 | SAS_ADDR(dev->sas_addr), |
1196 | SAS_ADDR(parent_dev->sas_addr)); |
1197 | res = phy_id; |
1198 | } else { |
1199 | mvi_device->attached_phy = phy_id; |
1200 | } |
1201 | } |
1202 | |
1203 | found_out: |
1204 | if (lock) |
1205 | spin_unlock_irqrestore(lock: &mvi->lock, flags); |
1206 | return res; |
1207 | } |
1208 | |
1209 | int mvs_dev_found(struct domain_device *dev) |
1210 | { |
1211 | return mvs_dev_found_notify(dev, lock: 1); |
1212 | } |
1213 | |
1214 | static void mvs_dev_gone_notify(struct domain_device *dev) |
1215 | { |
1216 | unsigned long flags = 0; |
1217 | struct mvs_device *mvi_dev = dev->lldd_dev; |
1218 | struct mvs_info *mvi; |
1219 | |
1220 | if (!mvi_dev) { |
1221 | mv_dprintk("found dev has gone.\n" ); |
1222 | return; |
1223 | } |
1224 | |
1225 | mvi = mvi_dev->mvi_info; |
1226 | |
1227 | spin_lock_irqsave(&mvi->lock, flags); |
1228 | |
1229 | mv_dprintk("found dev[%d:%x] is gone.\n" , |
1230 | mvi_dev->device_id, mvi_dev->dev_type); |
1231 | mvs_release_task(mvi, dev); |
1232 | mvs_free_reg_set(mvi, dev: mvi_dev); |
1233 | mvs_free_dev(mvi_dev); |
1234 | |
1235 | dev->lldd_dev = NULL; |
1236 | mvi_dev->sas_device = NULL; |
1237 | |
1238 | spin_unlock_irqrestore(lock: &mvi->lock, flags); |
1239 | } |
1240 | |
1241 | |
1242 | void mvs_dev_gone(struct domain_device *dev) |
1243 | { |
1244 | mvs_dev_gone_notify(dev); |
1245 | } |
1246 | |
1247 | /* Standard mandates link reset for ATA (type 0) |
1248 | and hard reset for SSP (type 1) , only for RECOVERY */ |
1249 | static int mvs_debug_I_T_nexus_reset(struct domain_device *dev) |
1250 | { |
1251 | int rc; |
1252 | struct sas_phy *phy = sas_get_local_phy(dev); |
1253 | int reset_type = (dev->dev_type == SAS_SATA_DEV || |
1254 | (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; |
1255 | rc = sas_phy_reset(phy, hard_reset: reset_type); |
1256 | sas_put_local_phy(phy); |
1257 | msleep(msecs: 2000); |
1258 | return rc; |
1259 | } |
1260 | |
1261 | /* mandatory SAM-3 */ |
1262 | int mvs_lu_reset(struct domain_device *dev, u8 *lun) |
1263 | { |
1264 | unsigned long flags; |
1265 | int rc = TMF_RESP_FUNC_FAILED; |
1266 | struct mvs_device * mvi_dev = dev->lldd_dev; |
1267 | struct mvs_info *mvi = mvi_dev->mvi_info; |
1268 | |
1269 | mvi_dev->dev_status = MVS_DEV_EH; |
1270 | rc = sas_lu_reset(dev, lun); |
1271 | if (rc == TMF_RESP_FUNC_COMPLETE) { |
1272 | spin_lock_irqsave(&mvi->lock, flags); |
1273 | mvs_release_task(mvi, dev); |
1274 | spin_unlock_irqrestore(lock: &mvi->lock, flags); |
1275 | } |
1276 | /* If failed, fall-through I_T_Nexus reset */ |
1277 | mv_printk("%s for device[%x]:rc= %d\n" , __func__, |
1278 | mvi_dev->device_id, rc); |
1279 | return rc; |
1280 | } |
1281 | |
1282 | int mvs_I_T_nexus_reset(struct domain_device *dev) |
1283 | { |
1284 | unsigned long flags; |
1285 | int rc = TMF_RESP_FUNC_FAILED; |
1286 | struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; |
1287 | struct mvs_info *mvi = mvi_dev->mvi_info; |
1288 | |
1289 | if (mvi_dev->dev_status != MVS_DEV_EH) |
1290 | return TMF_RESP_FUNC_COMPLETE; |
1291 | else |
1292 | mvi_dev->dev_status = MVS_DEV_NORMAL; |
1293 | rc = mvs_debug_I_T_nexus_reset(dev); |
1294 | mv_printk("%s for device[%x]:rc= %d\n" , |
1295 | __func__, mvi_dev->device_id, rc); |
1296 | |
1297 | spin_lock_irqsave(&mvi->lock, flags); |
1298 | mvs_release_task(mvi, dev); |
1299 | spin_unlock_irqrestore(lock: &mvi->lock, flags); |
1300 | |
1301 | return rc; |
1302 | } |
1303 | /* optional SAM-3 */ |
1304 | int mvs_query_task(struct sas_task *task) |
1305 | { |
1306 | u32 tag; |
1307 | int rc = TMF_RESP_FUNC_FAILED; |
1308 | |
1309 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { |
1310 | struct domain_device *dev = task->dev; |
1311 | struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; |
1312 | struct mvs_info *mvi = mvi_dev->mvi_info; |
1313 | |
1314 | rc = mvs_find_tag(mvi, task, tag: &tag); |
1315 | if (rc == 0) { |
1316 | rc = TMF_RESP_FUNC_FAILED; |
1317 | return rc; |
1318 | } |
1319 | |
1320 | rc = sas_query_task(task, tag); |
1321 | switch (rc) { |
1322 | /* The task is still in Lun, release it then */ |
1323 | case TMF_RESP_FUNC_SUCC: |
1324 | /* The task is not in Lun or failed, reset the phy */ |
1325 | case TMF_RESP_FUNC_FAILED: |
1326 | case TMF_RESP_FUNC_COMPLETE: |
1327 | break; |
1328 | } |
1329 | } |
1330 | mv_printk("%s:rc= %d\n" , __func__, rc); |
1331 | return rc; |
1332 | } |
1333 | |
1334 | /* mandatory SAM-3, still need free task/slot info */ |
1335 | int mvs_abort_task(struct sas_task *task) |
1336 | { |
1337 | struct domain_device *dev = task->dev; |
1338 | struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev; |
1339 | struct mvs_info *mvi; |
1340 | int rc = TMF_RESP_FUNC_FAILED; |
1341 | unsigned long flags; |
1342 | u32 tag; |
1343 | |
1344 | if (!mvi_dev) { |
1345 | mv_printk("Device has removed\n" ); |
1346 | return TMF_RESP_FUNC_FAILED; |
1347 | } |
1348 | |
1349 | mvi = mvi_dev->mvi_info; |
1350 | |
1351 | spin_lock_irqsave(&task->task_state_lock, flags); |
1352 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { |
1353 | spin_unlock_irqrestore(lock: &task->task_state_lock, flags); |
1354 | rc = TMF_RESP_FUNC_COMPLETE; |
1355 | goto out; |
1356 | } |
1357 | spin_unlock_irqrestore(lock: &task->task_state_lock, flags); |
1358 | mvi_dev->dev_status = MVS_DEV_EH; |
1359 | if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { |
1360 | rc = mvs_find_tag(mvi, task, tag: &tag); |
1361 | if (rc == 0) { |
1362 | mv_printk("No such tag in %s\n" , __func__); |
1363 | rc = TMF_RESP_FUNC_FAILED; |
1364 | return rc; |
1365 | } |
1366 | |
1367 | rc = sas_abort_task(task, tag); |
1368 | |
1369 | /* if successful, clear the task and callback forwards.*/ |
1370 | if (rc == TMF_RESP_FUNC_COMPLETE) { |
1371 | u32 slot_no; |
1372 | struct mvs_slot_info *slot; |
1373 | |
1374 | if (task->lldd_task) { |
1375 | slot = task->lldd_task; |
1376 | slot_no = (u32) (slot - mvi->slot_info); |
1377 | spin_lock_irqsave(&mvi->lock, flags); |
1378 | mvs_slot_complete(mvi, rx_desc: slot_no, flags: 1); |
1379 | spin_unlock_irqrestore(lock: &mvi->lock, flags); |
1380 | } |
1381 | } |
1382 | |
1383 | } else if (task->task_proto & SAS_PROTOCOL_SATA || |
1384 | task->task_proto & SAS_PROTOCOL_STP) { |
1385 | if (SAS_SATA_DEV == dev->dev_type) { |
1386 | struct mvs_slot_info *slot = task->lldd_task; |
1387 | u32 slot_idx = (u32)(slot - mvi->slot_info); |
1388 | mv_dprintk("mvs_abort_task() mvi=%p task=%p " |
1389 | "slot=%p slot_idx=x%x\n" , |
1390 | mvi, task, slot, slot_idx); |
1391 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; |
1392 | mvs_slot_task_free(mvi, task, slot, slot_idx); |
1393 | rc = TMF_RESP_FUNC_COMPLETE; |
1394 | goto out; |
1395 | } |
1396 | |
1397 | } |
1398 | out: |
1399 | if (rc != TMF_RESP_FUNC_COMPLETE) |
1400 | mv_printk("%s:rc= %d\n" , __func__, rc); |
1401 | return rc; |
1402 | } |
1403 | |
1404 | static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task, |
1405 | u32 slot_idx, int err) |
1406 | { |
1407 | struct mvs_device *mvi_dev = task->dev->lldd_dev; |
1408 | struct task_status_struct *tstat = &task->task_status; |
1409 | struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf; |
1410 | int stat = SAM_STAT_GOOD; |
1411 | |
1412 | |
1413 | resp->frame_len = sizeof(struct dev_to_host_fis); |
1414 | memcpy(&resp->ending_fis[0], |
1415 | SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset), |
1416 | sizeof(struct dev_to_host_fis)); |
1417 | tstat->buf_valid_size = sizeof(*resp); |
1418 | if (unlikely(err)) { |
1419 | if (unlikely(err & CMD_ISS_STPD)) |
1420 | stat = SAS_OPEN_REJECT; |
1421 | else |
1422 | stat = SAS_PROTO_RESPONSE; |
1423 | } |
1424 | |
1425 | return stat; |
1426 | } |
1427 | |
1428 | static void mvs_set_sense(u8 *buffer, int len, int d_sense, |
1429 | int key, int asc, int ascq) |
1430 | { |
1431 | memset(buffer, 0, len); |
1432 | |
1433 | if (d_sense) { |
1434 | /* Descriptor format */ |
1435 | if (len < 4) { |
1436 | mv_printk("Length %d of sense buffer too small to " |
1437 | "fit sense %x:%x:%x" , len, key, asc, ascq); |
1438 | } |
1439 | |
1440 | buffer[0] = 0x72; /* Response Code */ |
1441 | if (len > 1) |
1442 | buffer[1] = key; /* Sense Key */ |
1443 | if (len > 2) |
1444 | buffer[2] = asc; /* ASC */ |
1445 | if (len > 3) |
1446 | buffer[3] = ascq; /* ASCQ */ |
1447 | } else { |
1448 | if (len < 14) { |
1449 | mv_printk("Length %d of sense buffer too small to " |
1450 | "fit sense %x:%x:%x" , len, key, asc, ascq); |
1451 | } |
1452 | |
1453 | buffer[0] = 0x70; /* Response Code */ |
1454 | if (len > 2) |
1455 | buffer[2] = key; /* Sense Key */ |
1456 | if (len > 7) |
1457 | buffer[7] = 0x0a; /* Additional Sense Length */ |
1458 | if (len > 12) |
1459 | buffer[12] = asc; /* ASC */ |
1460 | if (len > 13) |
1461 | buffer[13] = ascq; /* ASCQ */ |
1462 | } |
1463 | |
1464 | return; |
1465 | } |
1466 | |
1467 | static void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu, |
1468 | u8 key, u8 asc, u8 asc_q) |
1469 | { |
1470 | iu->datapres = SAS_DATAPRES_SENSE_DATA; |
1471 | iu->response_data_len = 0; |
1472 | iu->sense_data_len = 17; |
1473 | iu->status = 02; |
1474 | mvs_set_sense(buffer: iu->sense_data, len: 17, d_sense: 0, |
1475 | key, asc, ascq: asc_q); |
1476 | } |
1477 | |
1478 | static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task, |
1479 | u32 slot_idx) |
1480 | { |
1481 | struct mvs_slot_info *slot = &mvi->slot_info[slot_idx]; |
1482 | int stat; |
1483 | u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response); |
1484 | u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1)); |
1485 | u32 tfs = 0; |
1486 | enum mvs_port_type type = PORT_TYPE_SAS; |
1487 | |
1488 | if (err_dw0 & CMD_ISS_STPD) |
1489 | MVS_CHIP_DISP->issue_stop(mvi, type, tfs); |
1490 | |
1491 | MVS_CHIP_DISP->command_active(mvi, slot_idx); |
1492 | |
1493 | stat = SAM_STAT_CHECK_CONDITION; |
1494 | switch (task->task_proto) { |
1495 | case SAS_PROTOCOL_SSP: |
1496 | { |
1497 | stat = SAS_ABORTED_TASK; |
1498 | if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) { |
1499 | struct ssp_response_iu *iu = slot->response + |
1500 | sizeof(struct mvs_err_info); |
1501 | mvs_fill_ssp_resp_iu(iu, NOT_READY, asc: 0x04, asc_q: 01); |
1502 | sas_ssp_task_response(dev: mvi->dev, task, iu); |
1503 | stat = SAM_STAT_CHECK_CONDITION; |
1504 | } |
1505 | if (err_dw1 & bit(31)) |
1506 | mv_printk("reuse same slot, retry command.\n" ); |
1507 | break; |
1508 | } |
1509 | case SAS_PROTOCOL_SMP: |
1510 | stat = SAM_STAT_CHECK_CONDITION; |
1511 | break; |
1512 | |
1513 | case SAS_PROTOCOL_SATA: |
1514 | case SAS_PROTOCOL_STP: |
1515 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: |
1516 | { |
1517 | task->ata_task.use_ncq = 0; |
1518 | stat = SAS_PROTO_RESPONSE; |
1519 | mvs_sata_done(mvi, task, slot_idx, err: err_dw0); |
1520 | } |
1521 | break; |
1522 | default: |
1523 | break; |
1524 | } |
1525 | |
1526 | return stat; |
1527 | } |
1528 | |
1529 | int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags) |
1530 | { |
1531 | u32 slot_idx = rx_desc & RXQ_SLOT_MASK; |
1532 | struct mvs_slot_info *slot = &mvi->slot_info[slot_idx]; |
1533 | struct sas_task *task = slot->task; |
1534 | struct mvs_device *mvi_dev = NULL; |
1535 | struct task_status_struct *tstat; |
1536 | struct domain_device *dev; |
1537 | u32 aborted; |
1538 | |
1539 | void *to; |
1540 | enum exec_status sts; |
1541 | |
1542 | if (unlikely(!task || !task->lldd_task || !task->dev)) |
1543 | return -1; |
1544 | |
1545 | tstat = &task->task_status; |
1546 | dev = task->dev; |
1547 | mvi_dev = dev->lldd_dev; |
1548 | |
1549 | spin_lock(lock: &task->task_state_lock); |
1550 | task->task_state_flags &= ~SAS_TASK_STATE_PENDING; |
1551 | task->task_state_flags |= SAS_TASK_STATE_DONE; |
1552 | /* race condition*/ |
1553 | aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED; |
1554 | spin_unlock(lock: &task->task_state_lock); |
1555 | |
1556 | memset(tstat, 0, sizeof(*tstat)); |
1557 | tstat->resp = SAS_TASK_COMPLETE; |
1558 | |
1559 | if (unlikely(aborted)) { |
1560 | tstat->stat = SAS_ABORTED_TASK; |
1561 | if (mvi_dev && mvi_dev->running_req) |
1562 | mvi_dev->running_req--; |
1563 | if (sas_protocol_ata(proto: task->task_proto)) |
1564 | mvs_free_reg_set(mvi, dev: mvi_dev); |
1565 | |
1566 | mvs_slot_task_free(mvi, task, slot, slot_idx); |
1567 | return -1; |
1568 | } |
1569 | |
1570 | /* when no device attaching, go ahead and complete by error handling*/ |
1571 | if (unlikely(!mvi_dev || flags)) { |
1572 | if (!mvi_dev) |
1573 | mv_dprintk("port has not device.\n" ); |
1574 | tstat->stat = SAS_PHY_DOWN; |
1575 | goto out; |
1576 | } |
1577 | |
1578 | /* |
1579 | * error info record present; slot->response is 32 bit aligned but may |
1580 | * not be 64 bit aligned, so check for zero in two 32 bit reads |
1581 | */ |
1582 | if (unlikely((rx_desc & RXQ_ERR) |
1583 | && (*((u32 *)slot->response) |
1584 | || *(((u32 *)slot->response) + 1)))) { |
1585 | mv_dprintk("port %d slot %d rx_desc %X has error info" |
1586 | "%016llX.\n" , slot->port->sas_port.id, slot_idx, |
1587 | rx_desc, get_unaligned_le64(slot->response)); |
1588 | tstat->stat = mvs_slot_err(mvi, task, slot_idx); |
1589 | tstat->resp = SAS_TASK_COMPLETE; |
1590 | goto out; |
1591 | } |
1592 | |
1593 | switch (task->task_proto) { |
1594 | case SAS_PROTOCOL_SSP: |
1595 | /* hw says status == 0, datapres == 0 */ |
1596 | if (rx_desc & RXQ_GOOD) { |
1597 | tstat->stat = SAS_SAM_STAT_GOOD; |
1598 | tstat->resp = SAS_TASK_COMPLETE; |
1599 | } |
1600 | /* response frame present */ |
1601 | else if (rx_desc & RXQ_RSP) { |
1602 | struct ssp_response_iu *iu = slot->response + |
1603 | sizeof(struct mvs_err_info); |
1604 | sas_ssp_task_response(dev: mvi->dev, task, iu); |
1605 | } else |
1606 | tstat->stat = SAS_SAM_STAT_CHECK_CONDITION; |
1607 | break; |
1608 | |
1609 | case SAS_PROTOCOL_SMP: { |
1610 | struct scatterlist *sg_resp = &task->smp_task.smp_resp; |
1611 | tstat->stat = SAS_SAM_STAT_GOOD; |
1612 | to = kmap_atomic(page: sg_page(sg: sg_resp)); |
1613 | memcpy(to + sg_resp->offset, |
1614 | slot->response + sizeof(struct mvs_err_info), |
1615 | sg_dma_len(sg_resp)); |
1616 | kunmap_atomic(to); |
1617 | break; |
1618 | } |
1619 | |
1620 | case SAS_PROTOCOL_SATA: |
1621 | case SAS_PROTOCOL_STP: |
1622 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: { |
1623 | tstat->stat = mvs_sata_done(mvi, task, slot_idx, err: 0); |
1624 | break; |
1625 | } |
1626 | |
1627 | default: |
1628 | tstat->stat = SAS_SAM_STAT_CHECK_CONDITION; |
1629 | break; |
1630 | } |
1631 | if (!slot->port->port_attached) { |
1632 | mv_dprintk("port %d has removed.\n" , slot->port->sas_port.id); |
1633 | tstat->stat = SAS_PHY_DOWN; |
1634 | } |
1635 | |
1636 | |
1637 | out: |
1638 | if (mvi_dev && mvi_dev->running_req) { |
1639 | mvi_dev->running_req--; |
1640 | if (sas_protocol_ata(proto: task->task_proto) && !mvi_dev->running_req) |
1641 | mvs_free_reg_set(mvi, dev: mvi_dev); |
1642 | } |
1643 | mvs_slot_task_free(mvi, task, slot, slot_idx); |
1644 | sts = tstat->stat; |
1645 | |
1646 | spin_unlock(lock: &mvi->lock); |
1647 | if (task->task_done) |
1648 | task->task_done(task); |
1649 | |
1650 | spin_lock(lock: &mvi->lock); |
1651 | |
1652 | return sts; |
1653 | } |
1654 | |
1655 | void mvs_do_release_task(struct mvs_info *mvi, |
1656 | int phy_no, struct domain_device *dev) |
1657 | { |
1658 | u32 slot_idx; |
1659 | struct mvs_phy *phy; |
1660 | struct mvs_port *port; |
1661 | struct mvs_slot_info *slot, *slot2; |
1662 | |
1663 | phy = &mvi->phy[phy_no]; |
1664 | port = phy->port; |
1665 | if (!port) |
1666 | return; |
1667 | /* clean cmpl queue in case request is already finished */ |
1668 | mvs_int_rx(mvi, self_clear: false); |
1669 | |
1670 | |
1671 | |
1672 | list_for_each_entry_safe(slot, slot2, &port->list, entry) { |
1673 | struct sas_task *task; |
1674 | slot_idx = (u32) (slot - mvi->slot_info); |
1675 | task = slot->task; |
1676 | |
1677 | if (dev && task->dev != dev) |
1678 | continue; |
1679 | |
1680 | mv_printk("Release slot [%x] tag[%x], task [%p]:\n" , |
1681 | slot_idx, slot->slot_tag, task); |
1682 | MVS_CHIP_DISP->command_active(mvi, slot_idx); |
1683 | |
1684 | mvs_slot_complete(mvi, rx_desc: slot_idx, flags: 1); |
1685 | } |
1686 | } |
1687 | |
1688 | void mvs_release_task(struct mvs_info *mvi, |
1689 | struct domain_device *dev) |
1690 | { |
1691 | int i, phyno[WIDE_PORT_MAX_PHY], num; |
1692 | num = mvs_find_dev_phyno(dev, phyno); |
1693 | for (i = 0; i < num; i++) |
1694 | mvs_do_release_task(mvi, phy_no: phyno[i], dev); |
1695 | } |
1696 | |
1697 | static void mvs_phy_disconnected(struct mvs_phy *phy) |
1698 | { |
1699 | phy->phy_attached = 0; |
1700 | phy->att_dev_info = 0; |
1701 | phy->att_dev_sas_addr = 0; |
1702 | } |
1703 | |
1704 | static void mvs_work_queue(struct work_struct *work) |
1705 | { |
1706 | struct delayed_work *dw = container_of(work, struct delayed_work, work); |
1707 | struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q); |
1708 | struct mvs_info *mvi = mwq->mvi; |
1709 | unsigned long flags; |
1710 | u32 phy_no = (unsigned long) mwq->data; |
1711 | struct mvs_phy *phy = &mvi->phy[phy_no]; |
1712 | struct asd_sas_phy *sas_phy = &phy->sas_phy; |
1713 | |
1714 | spin_lock_irqsave(&mvi->lock, flags); |
1715 | if (mwq->handler & PHY_PLUG_EVENT) { |
1716 | |
1717 | if (phy->phy_event & PHY_PLUG_OUT) { |
1718 | u32 tmp; |
1719 | |
1720 | tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no); |
1721 | phy->phy_event &= ~PHY_PLUG_OUT; |
1722 | if (!(tmp & PHY_READY_MASK)) { |
1723 | sas_phy_disconnected(phy: sas_phy); |
1724 | mvs_phy_disconnected(phy); |
1725 | sas_notify_phy_event(phy: sas_phy, |
1726 | event: PHYE_LOSS_OF_SIGNAL, GFP_ATOMIC); |
1727 | mv_dprintk("phy%d Removed Device\n" , phy_no); |
1728 | } else { |
1729 | MVS_CHIP_DISP->detect_porttype(mvi, phy_no); |
1730 | mvs_update_phyinfo(mvi, i: phy_no, get_st: 1); |
1731 | mvs_bytes_dmaed(mvi, i: phy_no, GFP_ATOMIC); |
1732 | mvs_port_notify_formed(sas_phy, lock: 0); |
1733 | mv_dprintk("phy%d Attached Device\n" , phy_no); |
1734 | } |
1735 | } |
1736 | } else if (mwq->handler & EXP_BRCT_CHG) { |
1737 | phy->phy_event &= ~EXP_BRCT_CHG; |
1738 | sas_notify_port_event(phy: sas_phy, |
1739 | event: PORTE_BROADCAST_RCVD, GFP_ATOMIC); |
1740 | mv_dprintk("phy%d Got Broadcast Change\n" , phy_no); |
1741 | } |
1742 | list_del(entry: &mwq->entry); |
1743 | spin_unlock_irqrestore(lock: &mvi->lock, flags); |
1744 | kfree(objp: mwq); |
1745 | } |
1746 | |
1747 | static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler) |
1748 | { |
1749 | struct mvs_wq *mwq; |
1750 | int ret = 0; |
1751 | |
1752 | mwq = kmalloc(size: sizeof(struct mvs_wq), GFP_ATOMIC); |
1753 | if (mwq) { |
1754 | mwq->mvi = mvi; |
1755 | mwq->data = data; |
1756 | mwq->handler = handler; |
1757 | MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq); |
1758 | list_add_tail(new: &mwq->entry, head: &mvi->wq_list); |
1759 | schedule_delayed_work(dwork: &mwq->work_q, HZ * 2); |
1760 | } else |
1761 | ret = -ENOMEM; |
1762 | |
1763 | return ret; |
1764 | } |
1765 | |
1766 | static void mvs_sig_time_out(struct timer_list *t) |
1767 | { |
1768 | struct mvs_phy *phy = from_timer(phy, t, timer); |
1769 | struct mvs_info *mvi = phy->mvi; |
1770 | u8 phy_no; |
1771 | |
1772 | for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) { |
1773 | if (&mvi->phy[phy_no] == phy) { |
1774 | mv_dprintk("Get signature time out, reset phy %d\n" , |
1775 | phy_no+mvi->id*mvi->chip->n_phy); |
1776 | MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET); |
1777 | } |
1778 | } |
1779 | } |
1780 | |
1781 | void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events) |
1782 | { |
1783 | u32 tmp; |
1784 | struct mvs_phy *phy = &mvi->phy[phy_no]; |
1785 | |
1786 | phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no); |
1787 | MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status); |
1788 | mv_dprintk("phy %d ctrl sts=0x%08X.\n" , phy_no+mvi->id*mvi->chip->n_phy, |
1789 | MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no)); |
1790 | mv_dprintk("phy %d irq sts = 0x%08X\n" , phy_no+mvi->id*mvi->chip->n_phy, |
1791 | phy->irq_status); |
1792 | |
1793 | /* |
1794 | * events is port event now , |
1795 | * we need check the interrupt status which belongs to per port. |
1796 | */ |
1797 | |
1798 | if (phy->irq_status & PHYEV_DCDR_ERR) { |
1799 | mv_dprintk("phy %d STP decoding error.\n" , |
1800 | phy_no + mvi->id*mvi->chip->n_phy); |
1801 | } |
1802 | |
1803 | if (phy->irq_status & PHYEV_POOF) { |
1804 | mdelay(500); |
1805 | if (!(phy->phy_event & PHY_PLUG_OUT)) { |
1806 | int dev_sata = phy->phy_type & PORT_TYPE_SATA; |
1807 | int ready; |
1808 | mvs_do_release_task(mvi, phy_no, NULL); |
1809 | phy->phy_event |= PHY_PLUG_OUT; |
1810 | MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1); |
1811 | mvs_handle_event(mvi, |
1812 | data: (void *)(unsigned long)phy_no, |
1813 | handler: PHY_PLUG_EVENT); |
1814 | ready = mvs_is_phy_ready(mvi, i: phy_no); |
1815 | if (ready || dev_sata) { |
1816 | if (MVS_CHIP_DISP->stp_reset) |
1817 | MVS_CHIP_DISP->stp_reset(mvi, |
1818 | phy_no); |
1819 | else |
1820 | MVS_CHIP_DISP->phy_reset(mvi, |
1821 | phy_no, MVS_SOFT_RESET); |
1822 | return; |
1823 | } |
1824 | } |
1825 | } |
1826 | |
1827 | if (phy->irq_status & PHYEV_COMWAKE) { |
1828 | tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no); |
1829 | MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no, |
1830 | tmp | PHYEV_SIG_FIS); |
1831 | if (phy->timer.function == NULL) { |
1832 | phy->timer.function = mvs_sig_time_out; |
1833 | phy->timer.expires = jiffies + 5*HZ; |
1834 | add_timer(timer: &phy->timer); |
1835 | } |
1836 | } |
1837 | if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) { |
1838 | phy->phy_status = mvs_is_phy_ready(mvi, i: phy_no); |
1839 | mv_dprintk("notify plug in on phy[%d]\n" , phy_no); |
1840 | if (phy->phy_status) { |
1841 | mdelay(10); |
1842 | MVS_CHIP_DISP->detect_porttype(mvi, phy_no); |
1843 | if (phy->phy_type & PORT_TYPE_SATA) { |
1844 | tmp = MVS_CHIP_DISP->read_port_irq_mask( |
1845 | mvi, phy_no); |
1846 | tmp &= ~PHYEV_SIG_FIS; |
1847 | MVS_CHIP_DISP->write_port_irq_mask(mvi, |
1848 | phy_no, tmp); |
1849 | } |
1850 | mvs_update_phyinfo(mvi, i: phy_no, get_st: 0); |
1851 | if (phy->phy_type & PORT_TYPE_SAS) { |
1852 | MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE); |
1853 | mdelay(10); |
1854 | } |
1855 | |
1856 | mvs_bytes_dmaed(mvi, i: phy_no, GFP_ATOMIC); |
1857 | /* whether driver is going to handle hot plug */ |
1858 | if (phy->phy_event & PHY_PLUG_OUT) { |
1859 | mvs_port_notify_formed(sas_phy: &phy->sas_phy, lock: 0); |
1860 | phy->phy_event &= ~PHY_PLUG_OUT; |
1861 | } |
1862 | } else { |
1863 | mv_dprintk("plugin interrupt but phy%d is gone\n" , |
1864 | phy_no + mvi->id*mvi->chip->n_phy); |
1865 | } |
1866 | } else if (phy->irq_status & PHYEV_BROAD_CH) { |
1867 | mv_dprintk("phy %d broadcast change.\n" , |
1868 | phy_no + mvi->id*mvi->chip->n_phy); |
1869 | mvs_handle_event(mvi, data: (void *)(unsigned long)phy_no, |
1870 | handler: EXP_BRCT_CHG); |
1871 | } |
1872 | } |
1873 | |
1874 | int mvs_int_rx(struct mvs_info *mvi, bool self_clear) |
1875 | { |
1876 | u32 rx_prod_idx, rx_desc; |
1877 | bool attn = false; |
1878 | |
1879 | /* the first dword in the RX ring is special: it contains |
1880 | * a mirror of the hardware's RX producer index, so that |
1881 | * we don't have to stall the CPU reading that register. |
1882 | * The actual RX ring is offset by one dword, due to this. |
1883 | */ |
1884 | rx_prod_idx = mvi->rx_cons; |
1885 | mvi->rx_cons = le32_to_cpu(mvi->rx[0]); |
1886 | if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */ |
1887 | return 0; |
1888 | |
1889 | /* The CMPL_Q may come late, read from register and try again |
1890 | * note: if coalescing is enabled, |
1891 | * it will need to read from register every time for sure |
1892 | */ |
1893 | if (unlikely(mvi->rx_cons == rx_prod_idx)) |
1894 | mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK; |
1895 | |
1896 | if (mvi->rx_cons == rx_prod_idx) |
1897 | return 0; |
1898 | |
1899 | while (mvi->rx_cons != rx_prod_idx) { |
1900 | /* increment our internal RX consumer pointer */ |
1901 | rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1); |
1902 | rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]); |
1903 | |
1904 | if (likely(rx_desc & RXQ_DONE)) |
1905 | mvs_slot_complete(mvi, rx_desc, flags: 0); |
1906 | if (rx_desc & RXQ_ATTN) { |
1907 | attn = true; |
1908 | } else if (rx_desc & RXQ_ERR) { |
1909 | if (!(rx_desc & RXQ_DONE)) |
1910 | mvs_slot_complete(mvi, rx_desc, flags: 0); |
1911 | } else if (rx_desc & RXQ_SLOT_RESET) { |
1912 | mvs_slot_free(mvi, rx_desc); |
1913 | } |
1914 | } |
1915 | |
1916 | if (attn && self_clear) |
1917 | MVS_CHIP_DISP->int_full(mvi); |
1918 | return 0; |
1919 | } |
1920 | |
1921 | int mvs_gpio_write(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index, |
1922 | u8 reg_count, u8 *write_data) |
1923 | { |
1924 | struct mvs_prv_info *mvs_prv = sha->lldd_ha; |
1925 | struct mvs_info *mvi = mvs_prv->mvi[0]; |
1926 | |
1927 | if (MVS_CHIP_DISP->gpio_write) { |
1928 | return MVS_CHIP_DISP->gpio_write(mvs_prv, reg_type, |
1929 | reg_index, reg_count, write_data); |
1930 | } |
1931 | |
1932 | return -ENOSYS; |
1933 | } |
1934 | |