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drm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()
[drm/drm-misc.git] / drivers / scsi / mvumi.c
blobd9d366ec17dc975a9890ecf6441d7c9837e226e0
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Marvell UMI driver
4 *
5 * Copyright 2011 Marvell. <jyli@marvell.com>
6 */
7
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10 #include <linux/moduleparam.h>
11 #include <linux/init.h>
12 #include <linux/device.h>
13 #include <linux/pci.h>
14 #include <linux/list.h>
15 #include <linux/spinlock.h>
16 #include <linux/interrupt.h>
17 #include <linux/delay.h>
18 #include <linux/ktime.h>
19 #include <linux/blkdev.h>
20 #include <linux/io.h>
21 #include <scsi/scsi.h>
22 #include <scsi/scsi_cmnd.h>
23 #include <scsi/scsi_device.h>
24 #include <scsi/scsi_host.h>
25 #include <scsi/scsi_transport.h>
26 #include <scsi/scsi_eh.h>
27 #include <linux/uaccess.h>
28 #include <linux/kthread.h>
29
30 #include "mvumi.h"
31
32 MODULE_LICENSE("GPL");
33 MODULE_AUTHOR("jyli@marvell.com");
34 MODULE_DESCRIPTION("Marvell UMI Driver");
35
36 static const struct pci_device_id mvumi_pci_table[] = {
37 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, PCI_DEVICE_ID_MARVELL_MV9143) },
38 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, PCI_DEVICE_ID_MARVELL_MV9580) },
39 { 0 }
40 };
41
42 MODULE_DEVICE_TABLE(pci, mvumi_pci_table);
43
44 static void tag_init(struct mvumi_tag *st, unsigned short size)
45 {
46 unsigned short i;
47 BUG_ON(size != st->size);
48 st->top = size;
49 for (i = 0; i < size; i++)
50 st->stack[i] = size - 1 - i;
51 }
52
53 static unsigned short tag_get_one(struct mvumi_hba *mhba, struct mvumi_tag *st)
54 {
55 BUG_ON(st->top <= 0);
56 return st->stack[--st->top];
57 }
58
59 static void tag_release_one(struct mvumi_hba *mhba, struct mvumi_tag *st,
60 unsigned short tag)
61 {
62 BUG_ON(st->top >= st->size);
63 st->stack[st->top++] = tag;
64 }
65
66 static bool tag_is_empty(struct mvumi_tag *st)
67 {
68 if (st->top == 0)
69 return true;
70 else
71 return false;
72 }
73
74 static void mvumi_unmap_pci_addr(struct pci_dev *dev, void **addr_array)
75 {
76 int i;
77
78 for (i = 0; i < MAX_BASE_ADDRESS; i++)
79 if ((pci_resource_flags(dev, i) & IORESOURCE_MEM) &&
80 addr_array[i])
81 pci_iounmap(dev, addr_array[i]);
82 }
83
84 static int mvumi_map_pci_addr(struct pci_dev *dev, void **addr_array)
85 {
86 int i;
87
88 for (i = 0; i < MAX_BASE_ADDRESS; i++) {
89 if (pci_resource_flags(dev, i) & IORESOURCE_MEM) {
90 addr_array[i] = pci_iomap(dev, i, 0);
91 if (!addr_array[i]) {
92 dev_err(&dev->dev, "failed to map Bar[%d]\n",
93 i);
94 mvumi_unmap_pci_addr(dev, addr_array);
95 return -ENOMEM;
96 }
97 } else
98 addr_array[i] = NULL;
99
100 dev_dbg(&dev->dev, "Bar %d : %p.\n", i, addr_array[i]);
101 }
102
103 return 0;
104 }
105
106 static struct mvumi_res *mvumi_alloc_mem_resource(struct mvumi_hba *mhba,
107 enum resource_type type, unsigned int size)
108 {
109 struct mvumi_res *res = kzalloc(sizeof(*res), GFP_ATOMIC);
110
111 if (!res) {
112 dev_err(&mhba->pdev->dev,
113 "Failed to allocate memory for resource manager.\n");
114 return NULL;
115 }
116
117 switch (type) {
118 case RESOURCE_CACHED_MEMORY:
119 res->virt_addr = kzalloc(size, GFP_ATOMIC);
120 if (!res->virt_addr) {
121 dev_err(&mhba->pdev->dev,
122 "unable to allocate memory,size = %d.\n", size);
123 kfree(res);
124 return NULL;
125 }
126 break;
127
128 case RESOURCE_UNCACHED_MEMORY:
129 size = round_up(size, 8);
130 res->virt_addr = dma_alloc_coherent(&mhba->pdev->dev, size,
131 &res->bus_addr,
132 GFP_KERNEL);
133 if (!res->virt_addr) {
134 dev_err(&mhba->pdev->dev,
135 "unable to allocate consistent mem,"
136 "size = %d.\n", size);
137 kfree(res);
138 return NULL;
139 }
140 break;
141
142 default:
143 dev_err(&mhba->pdev->dev, "unknown resource type %d.\n", type);
144 kfree(res);
145 return NULL;
146 }
147
148 res->type = type;
149 res->size = size;
150 INIT_LIST_HEAD(&res->entry);
151 list_add_tail(&res->entry, &mhba->res_list);
152
153 return res;
154 }
155
156 static void mvumi_release_mem_resource(struct mvumi_hba *mhba)
157 {
158 struct mvumi_res *res, *tmp;
159
160 list_for_each_entry_safe(res, tmp, &mhba->res_list, entry) {
161 switch (res->type) {
162 case RESOURCE_UNCACHED_MEMORY:
163 dma_free_coherent(&mhba->pdev->dev, res->size,
164 res->virt_addr, res->bus_addr);
165 break;
166 case RESOURCE_CACHED_MEMORY:
167 kfree(res->virt_addr);
168 break;
169 default:
170 dev_err(&mhba->pdev->dev,
171 "unknown resource type %d\n", res->type);
172 break;
173 }
174 list_del(&res->entry);
175 kfree(res);
176 }
177 mhba->fw_flag &= ~MVUMI_FW_ALLOC;
178 }
179
180 /**
181 * mvumi_make_sgl - Prepares SGL
182 * @mhba: Adapter soft state
183 * @scmd: SCSI command from the mid-layer
184 * @sgl_p: SGL to be filled in
185 * @sg_count: return the number of SG elements
186 *
187 * If successful, this function returns 0. otherwise, it returns -1.
188 */
189 static int mvumi_make_sgl(struct mvumi_hba *mhba, struct scsi_cmnd *scmd,
190 void *sgl_p, unsigned char *sg_count)
191 {
192 struct scatterlist *sg;
193 struct mvumi_sgl *m_sg = (struct mvumi_sgl *) sgl_p;
194 unsigned int i;
195 unsigned int sgnum = scsi_sg_count(scmd);
196 dma_addr_t busaddr;
197
198 *sg_count = dma_map_sg(&mhba->pdev->dev, scsi_sglist(scmd), sgnum,
199 scmd->sc_data_direction);
200 if (*sg_count > mhba->max_sge) {
201 dev_err(&mhba->pdev->dev,
202 "sg count[0x%x] is bigger than max sg[0x%x].\n",
203 *sg_count, mhba->max_sge);
204 dma_unmap_sg(&mhba->pdev->dev, scsi_sglist(scmd), sgnum,
205 scmd->sc_data_direction);
206 return -1;
207 }
208 scsi_for_each_sg(scmd, sg, *sg_count, i) {
209 busaddr = sg_dma_address(sg);
210 m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(busaddr));
211 m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(busaddr));
212 m_sg->flags = 0;
213 sgd_setsz(mhba, m_sg, cpu_to_le32(sg_dma_len(sg)));
214 if ((i + 1) == *sg_count)
215 m_sg->flags |= 1U << mhba->eot_flag;
216
217 sgd_inc(mhba, m_sg);
218 }
219
220 return 0;
221 }
222
223 static int mvumi_internal_cmd_sgl(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
224 unsigned int size)
225 {
226 struct mvumi_sgl *m_sg;
227 void *virt_addr;
228 dma_addr_t phy_addr;
229
230 if (size == 0)
231 return 0;
232
233 virt_addr = dma_alloc_coherent(&mhba->pdev->dev, size, &phy_addr,
234 GFP_KERNEL);
235 if (!virt_addr)
236 return -1;
237
238 m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
239 cmd->frame->sg_counts = 1;
240 cmd->data_buf = virt_addr;
241
242 m_sg->baseaddr_l = cpu_to_le32(lower_32_bits(phy_addr));
243 m_sg->baseaddr_h = cpu_to_le32(upper_32_bits(phy_addr));
244 m_sg->flags = 1U << mhba->eot_flag;
245 sgd_setsz(mhba, m_sg, cpu_to_le32(size));
246
247 return 0;
248 }
249
250 static struct mvumi_cmd *mvumi_create_internal_cmd(struct mvumi_hba *mhba,
251 unsigned int buf_size)
252 {
253 struct mvumi_cmd *cmd;
254
255 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
256 if (!cmd) {
257 dev_err(&mhba->pdev->dev, "failed to create a internal cmd\n");
258 return NULL;
259 }
260 INIT_LIST_HEAD(&cmd->queue_pointer);
261
262 cmd->frame = dma_alloc_coherent(&mhba->pdev->dev, mhba->ib_max_size,
263 &cmd->frame_phys, GFP_KERNEL);
264 if (!cmd->frame) {
265 dev_err(&mhba->pdev->dev, "failed to allocate memory for FW"
266 " frame,size = %d.\n", mhba->ib_max_size);
267 kfree(cmd);
268 return NULL;
269 }
270
271 if (buf_size) {
272 if (mvumi_internal_cmd_sgl(mhba, cmd, buf_size)) {
273 dev_err(&mhba->pdev->dev, "failed to allocate memory"
274 " for internal frame\n");
275 dma_free_coherent(&mhba->pdev->dev, mhba->ib_max_size,
276 cmd->frame, cmd->frame_phys);
277 kfree(cmd);
278 return NULL;
279 }
280 } else
281 cmd->frame->sg_counts = 0;
282
283 return cmd;
284 }
285
286 static void mvumi_delete_internal_cmd(struct mvumi_hba *mhba,
287 struct mvumi_cmd *cmd)
288 {
289 struct mvumi_sgl *m_sg;
290 unsigned int size;
291 dma_addr_t phy_addr;
292
293 if (cmd && cmd->frame) {
294 if (cmd->frame->sg_counts) {
295 m_sg = (struct mvumi_sgl *) &cmd->frame->payload[0];
296 sgd_getsz(mhba, m_sg, size);
297
298 phy_addr = (dma_addr_t) m_sg->baseaddr_l |
299 (dma_addr_t) ((m_sg->baseaddr_h << 16) << 16);
300
301 dma_free_coherent(&mhba->pdev->dev, size, cmd->data_buf,
302 phy_addr);
303 }
304 dma_free_coherent(&mhba->pdev->dev, mhba->ib_max_size,
305 cmd->frame, cmd->frame_phys);
306 kfree(cmd);
307 }
308 }
309
310 /**
311 * mvumi_get_cmd - Get a command from the free pool
312 * @mhba: Adapter soft state
313 *
314 * Returns a free command from the pool
315 */
316 static struct mvumi_cmd *mvumi_get_cmd(struct mvumi_hba *mhba)
317 {
318 struct mvumi_cmd *cmd = NULL;
319
320 if (likely(!list_empty(&mhba->cmd_pool))) {
321 cmd = list_entry((&mhba->cmd_pool)->next,
322 struct mvumi_cmd, queue_pointer);
323 list_del_init(&cmd->queue_pointer);
324 } else
325 dev_warn(&mhba->pdev->dev, "command pool is empty!\n");
326
327 return cmd;
328 }
329
330 /**
331 * mvumi_return_cmd - Return a cmd to free command pool
332 * @mhba: Adapter soft state
333 * @cmd: Command packet to be returned to free command pool
334 */
335 static inline void mvumi_return_cmd(struct mvumi_hba *mhba,
336 struct mvumi_cmd *cmd)
337 {
338 cmd->scmd = NULL;
339 list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
340 }
341
342 /**
343 * mvumi_free_cmds - Free all the cmds in the free cmd pool
344 * @mhba: Adapter soft state
345 */
346 static void mvumi_free_cmds(struct mvumi_hba *mhba)
347 {
348 struct mvumi_cmd *cmd;
349
350 while (!list_empty(&mhba->cmd_pool)) {
351 cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
352 queue_pointer);
353 list_del(&cmd->queue_pointer);
354 if (!(mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC))
355 kfree(cmd->frame);
356 kfree(cmd);
357 }
358 }
359
360 /**
361 * mvumi_alloc_cmds - Allocates the command packets
362 * @mhba: Adapter soft state
363 *
364 */
365 static int mvumi_alloc_cmds(struct mvumi_hba *mhba)
366 {
367 int i;
368 struct mvumi_cmd *cmd;
369
370 for (i = 0; i < mhba->max_io; i++) {
371 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
372 if (!cmd)
373 goto err_exit;
374
375 INIT_LIST_HEAD(&cmd->queue_pointer);
376 list_add_tail(&cmd->queue_pointer, &mhba->cmd_pool);
377 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
378 cmd->frame = mhba->ib_frame + i * mhba->ib_max_size;
379 cmd->frame_phys = mhba->ib_frame_phys
380 + i * mhba->ib_max_size;
381 } else
382 cmd->frame = kzalloc(mhba->ib_max_size, GFP_KERNEL);
383 if (!cmd->frame)
384 goto err_exit;
385 }
386 return 0;
387
388 err_exit:
389 dev_err(&mhba->pdev->dev,
390 "failed to allocate memory for cmd[0x%x].\n", i);
391 while (!list_empty(&mhba->cmd_pool)) {
392 cmd = list_first_entry(&mhba->cmd_pool, struct mvumi_cmd,
393 queue_pointer);
394 list_del(&cmd->queue_pointer);
395 if (!(mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC))
396 kfree(cmd->frame);
397 kfree(cmd);
398 }
399 return -ENOMEM;
400 }
401
402 static unsigned int mvumi_check_ib_list_9143(struct mvumi_hba *mhba)
403 {
404 unsigned int ib_rp_reg;
405 struct mvumi_hw_regs *regs = mhba->regs;
406
407 ib_rp_reg = ioread32(mhba->regs->inb_read_pointer);
408
409 if (unlikely(((ib_rp_reg & regs->cl_slot_num_mask) ==
410 (mhba->ib_cur_slot & regs->cl_slot_num_mask)) &&
411 ((ib_rp_reg & regs->cl_pointer_toggle)
412 != (mhba->ib_cur_slot & regs->cl_pointer_toggle)))) {
413 dev_warn(&mhba->pdev->dev, "no free slot to use.\n");
414 return 0;
415 }
416 if (atomic_read(&mhba->fw_outstanding) >= mhba->max_io) {
417 dev_warn(&mhba->pdev->dev, "firmware io overflow.\n");
418 return 0;
419 } else {
420 return mhba->max_io - atomic_read(&mhba->fw_outstanding);
421 }
422 }
423
424 static unsigned int mvumi_check_ib_list_9580(struct mvumi_hba *mhba)
425 {
426 unsigned int count;
427 if (atomic_read(&mhba->fw_outstanding) >= (mhba->max_io - 1))
428 return 0;
429 count = ioread32(mhba->ib_shadow);
430 if (count == 0xffff)
431 return 0;
432 return count;
433 }
434
435 static void mvumi_get_ib_list_entry(struct mvumi_hba *mhba, void **ib_entry)
436 {
437 unsigned int cur_ib_entry;
438
439 cur_ib_entry = mhba->ib_cur_slot & mhba->regs->cl_slot_num_mask;
440 cur_ib_entry++;
441 if (cur_ib_entry >= mhba->list_num_io) {
442 cur_ib_entry -= mhba->list_num_io;
443 mhba->ib_cur_slot ^= mhba->regs->cl_pointer_toggle;
444 }
445 mhba->ib_cur_slot &= ~mhba->regs->cl_slot_num_mask;
446 mhba->ib_cur_slot |= (cur_ib_entry & mhba->regs->cl_slot_num_mask);
447 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
448 *ib_entry = mhba->ib_list + cur_ib_entry *
449 sizeof(struct mvumi_dyn_list_entry);
450 } else {
451 *ib_entry = mhba->ib_list + cur_ib_entry * mhba->ib_max_size;
452 }
453 atomic_inc(&mhba->fw_outstanding);
454 }
455
456 static void mvumi_send_ib_list_entry(struct mvumi_hba *mhba)
457 {
458 iowrite32(0xffff, mhba->ib_shadow);
459 iowrite32(mhba->ib_cur_slot, mhba->regs->inb_write_pointer);
460 }
461
462 static char mvumi_check_ob_frame(struct mvumi_hba *mhba,
463 unsigned int cur_obf, struct mvumi_rsp_frame *p_outb_frame)
464 {
465 unsigned short tag, request_id;
466
467 udelay(1);
468 p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
469 request_id = p_outb_frame->request_id;
470 tag = p_outb_frame->tag;
471 if (tag > mhba->tag_pool.size) {
472 dev_err(&mhba->pdev->dev, "ob frame data error\n");
473 return -1;
474 }
475 if (mhba->tag_cmd[tag] == NULL) {
476 dev_err(&mhba->pdev->dev, "tag[0x%x] with NO command\n", tag);
477 return -1;
478 } else if (mhba->tag_cmd[tag]->request_id != request_id &&
479 mhba->request_id_enabled) {
480 dev_err(&mhba->pdev->dev, "request ID from FW:0x%x,"
481 "cmd request ID:0x%x\n", request_id,
482 mhba->tag_cmd[tag]->request_id);
483 return -1;
484 }
485
486 return 0;
487 }
488
489 static int mvumi_check_ob_list_9143(struct mvumi_hba *mhba,
490 unsigned int *cur_obf, unsigned int *assign_obf_end)
491 {
492 unsigned int ob_write, ob_write_shadow;
493 struct mvumi_hw_regs *regs = mhba->regs;
494
495 do {
496 ob_write = ioread32(regs->outb_copy_pointer);
497 ob_write_shadow = ioread32(mhba->ob_shadow);
498 } while ((ob_write & regs->cl_slot_num_mask) != ob_write_shadow);
499
500 *cur_obf = mhba->ob_cur_slot & mhba->regs->cl_slot_num_mask;
501 *assign_obf_end = ob_write & mhba->regs->cl_slot_num_mask;
502
503 if ((ob_write & regs->cl_pointer_toggle) !=
504 (mhba->ob_cur_slot & regs->cl_pointer_toggle)) {
505 *assign_obf_end += mhba->list_num_io;
506 }
507 return 0;
508 }
509
510 static int mvumi_check_ob_list_9580(struct mvumi_hba *mhba,
511 unsigned int *cur_obf, unsigned int *assign_obf_end)
512 {
513 unsigned int ob_write;
514 struct mvumi_hw_regs *regs = mhba->regs;
515
516 ob_write = ioread32(regs->outb_read_pointer);
517 ob_write = ioread32(regs->outb_copy_pointer);
518 *cur_obf = mhba->ob_cur_slot & mhba->regs->cl_slot_num_mask;
519 *assign_obf_end = ob_write & mhba->regs->cl_slot_num_mask;
520 if (*assign_obf_end < *cur_obf)
521 *assign_obf_end += mhba->list_num_io;
522 else if (*assign_obf_end == *cur_obf)
523 return -1;
524 return 0;
525 }
526
527 static void mvumi_receive_ob_list_entry(struct mvumi_hba *mhba)
528 {
529 unsigned int cur_obf, assign_obf_end, i;
530 struct mvumi_ob_data *ob_data;
531 struct mvumi_rsp_frame *p_outb_frame;
532 struct mvumi_hw_regs *regs = mhba->regs;
533
534 if (mhba->instancet->check_ob_list(mhba, &cur_obf, &assign_obf_end))
535 return;
536
537 for (i = (assign_obf_end - cur_obf); i != 0; i--) {
538 cur_obf++;
539 if (cur_obf >= mhba->list_num_io) {
540 cur_obf -= mhba->list_num_io;
541 mhba->ob_cur_slot ^= regs->cl_pointer_toggle;
542 }
543
544 p_outb_frame = mhba->ob_list + cur_obf * mhba->ob_max_size;
545
546 /* Copy pointer may point to entry in outbound list
547 * before entry has valid data
548 */
549 if (unlikely(p_outb_frame->tag > mhba->tag_pool.size ||
550 mhba->tag_cmd[p_outb_frame->tag] == NULL ||
551 p_outb_frame->request_id !=
552 mhba->tag_cmd[p_outb_frame->tag]->request_id))
553 if (mvumi_check_ob_frame(mhba, cur_obf, p_outb_frame))
554 continue;
555
556 if (!list_empty(&mhba->ob_data_list)) {
557 ob_data = (struct mvumi_ob_data *)
558 list_first_entry(&mhba->ob_data_list,
559 struct mvumi_ob_data, list);
560 list_del_init(&ob_data->list);
561 } else {
562 ob_data = NULL;
563 if (cur_obf == 0) {
564 cur_obf = mhba->list_num_io - 1;
565 mhba->ob_cur_slot ^= regs->cl_pointer_toggle;
566 } else
567 cur_obf -= 1;
568 break;
569 }
570
571 memcpy(ob_data->data, p_outb_frame, mhba->ob_max_size);
572 p_outb_frame->tag = 0xff;
573
574 list_add_tail(&ob_data->list, &mhba->free_ob_list);
575 }
576 mhba->ob_cur_slot &= ~regs->cl_slot_num_mask;
577 mhba->ob_cur_slot |= (cur_obf & regs->cl_slot_num_mask);
578 iowrite32(mhba->ob_cur_slot, regs->outb_read_pointer);
579 }
580
581 static void mvumi_reset(struct mvumi_hba *mhba)
582 {
583 struct mvumi_hw_regs *regs = mhba->regs;
584
585 iowrite32(0, regs->enpointa_mask_reg);
586 if (ioread32(regs->arm_to_pciea_msg1) != HANDSHAKE_DONESTATE)
587 return;
588
589 iowrite32(DRBL_SOFT_RESET, regs->pciea_to_arm_drbl_reg);
590 }
591
592 static unsigned char mvumi_start(struct mvumi_hba *mhba);
593
594 static int mvumi_wait_for_outstanding(struct mvumi_hba *mhba)
595 {
596 mhba->fw_state = FW_STATE_ABORT;
597 mvumi_reset(mhba);
598
599 if (mvumi_start(mhba))
600 return FAILED;
601 else
602 return SUCCESS;
603 }
604
605 static int mvumi_wait_for_fw(struct mvumi_hba *mhba)
606 {
607 struct mvumi_hw_regs *regs = mhba->regs;
608 u32 tmp;
609 unsigned long before;
610 before = jiffies;
611
612 iowrite32(0, regs->enpointa_mask_reg);
613 tmp = ioread32(regs->arm_to_pciea_msg1);
614 while (tmp != HANDSHAKE_READYSTATE) {
615 iowrite32(DRBL_MU_RESET, regs->pciea_to_arm_drbl_reg);
616 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
617 dev_err(&mhba->pdev->dev,
618 "FW reset failed [0x%x].\n", tmp);
619 return FAILED;
620 }
621
622 msleep(500);
623 rmb();
624 tmp = ioread32(regs->arm_to_pciea_msg1);
625 }
626
627 return SUCCESS;
628 }
629
630 static void mvumi_backup_bar_addr(struct mvumi_hba *mhba)
631 {
632 unsigned char i;
633
634 for (i = 0; i < MAX_BASE_ADDRESS; i++) {
635 pci_read_config_dword(mhba->pdev, 0x10 + i * 4,
636 &mhba->pci_base[i]);
637 }
638 }
639
640 static void mvumi_restore_bar_addr(struct mvumi_hba *mhba)
641 {
642 unsigned char i;
643
644 for (i = 0; i < MAX_BASE_ADDRESS; i++) {
645 if (mhba->pci_base[i])
646 pci_write_config_dword(mhba->pdev, 0x10 + i * 4,
647 mhba->pci_base[i]);
648 }
649 }
650
651 static int mvumi_pci_set_master(struct pci_dev *pdev)
652 {
653 int ret = 0;
654
655 pci_set_master(pdev);
656
657 if (IS_DMA64) {
658 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
659 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
660 } else
661 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
662
663 return ret;
664 }
665
666 static int mvumi_reset_host_9580(struct mvumi_hba *mhba)
667 {
668 mhba->fw_state = FW_STATE_ABORT;
669
670 iowrite32(0, mhba->regs->reset_enable);
671 iowrite32(0xf, mhba->regs->reset_request);
672
673 iowrite32(0x10, mhba->regs->reset_enable);
674 iowrite32(0x10, mhba->regs->reset_request);
675 msleep(100);
676 pci_disable_device(mhba->pdev);
677
678 if (pci_enable_device(mhba->pdev)) {
679 dev_err(&mhba->pdev->dev, "enable device failed\n");
680 return FAILED;
681 }
682 if (mvumi_pci_set_master(mhba->pdev)) {
683 dev_err(&mhba->pdev->dev, "set master failed\n");
684 return FAILED;
685 }
686 mvumi_restore_bar_addr(mhba);
687 if (mvumi_wait_for_fw(mhba) == FAILED)
688 return FAILED;
689
690 return mvumi_wait_for_outstanding(mhba);
691 }
692
693 static int mvumi_reset_host_9143(struct mvumi_hba *mhba)
694 {
695 return mvumi_wait_for_outstanding(mhba);
696 }
697
698 static int mvumi_host_reset(struct scsi_cmnd *scmd)
699 {
700 struct mvumi_hba *mhba;
701
702 mhba = (struct mvumi_hba *) scmd->device->host->hostdata;
703
704 scmd_printk(KERN_NOTICE, scmd, "RESET -%u cmd=%x retries=%x\n",
705 scsi_cmd_to_rq(scmd)->tag, scmd->cmnd[0], scmd->retries);
706
707 return mhba->instancet->reset_host(mhba);
708 }
709
710 static int mvumi_issue_blocked_cmd(struct mvumi_hba *mhba,
711 struct mvumi_cmd *cmd)
712 {
713 unsigned long flags;
714
715 cmd->cmd_status = REQ_STATUS_PENDING;
716
717 if (atomic_read(&cmd->sync_cmd)) {
718 dev_err(&mhba->pdev->dev,
719 "last blocked cmd not finished, sync_cmd = %d\n",
720 atomic_read(&cmd->sync_cmd));
721 BUG_ON(1);
722 return -1;
723 }
724 atomic_inc(&cmd->sync_cmd);
725 spin_lock_irqsave(mhba->shost->host_lock, flags);
726 mhba->instancet->fire_cmd(mhba, cmd);
727 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
728
729 wait_event_timeout(mhba->int_cmd_wait_q,
730 (cmd->cmd_status != REQ_STATUS_PENDING),
731 MVUMI_INTERNAL_CMD_WAIT_TIME * HZ);
732
733 /* command timeout */
734 if (atomic_read(&cmd->sync_cmd)) {
735 spin_lock_irqsave(mhba->shost->host_lock, flags);
736 atomic_dec(&cmd->sync_cmd);
737 if (mhba->tag_cmd[cmd->frame->tag]) {
738 mhba->tag_cmd[cmd->frame->tag] = NULL;
739 dev_warn(&mhba->pdev->dev, "TIMEOUT:release tag [%d]\n",
740 cmd->frame->tag);
741 tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
742 }
743 if (!list_empty(&cmd->queue_pointer)) {
744 dev_warn(&mhba->pdev->dev,
745 "TIMEOUT:A internal command doesn't send!\n");
746 list_del_init(&cmd->queue_pointer);
747 } else
748 atomic_dec(&mhba->fw_outstanding);
749
750 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
751 }
752 return 0;
753 }
754
755 static void mvumi_release_fw(struct mvumi_hba *mhba)
756 {
757 mvumi_free_cmds(mhba);
758 mvumi_release_mem_resource(mhba);
759 mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
760 dma_free_coherent(&mhba->pdev->dev, HSP_MAX_SIZE,
761 mhba->handshake_page, mhba->handshake_page_phys);
762 kfree(mhba->regs);
763 pci_release_regions(mhba->pdev);
764 }
765
766 static unsigned char mvumi_flush_cache(struct mvumi_hba *mhba)
767 {
768 struct mvumi_cmd *cmd;
769 struct mvumi_msg_frame *frame;
770 unsigned char device_id, retry = 0;
771 unsigned char bitcount = sizeof(unsigned char) * 8;
772
773 for (device_id = 0; device_id < mhba->max_target_id; device_id++) {
774 if (!(mhba->target_map[device_id / bitcount] &
775 (1 << (device_id % bitcount))))
776 continue;
777 get_cmd: cmd = mvumi_create_internal_cmd(mhba, 0);
778 if (!cmd) {
779 if (retry++ >= 5) {
780 dev_err(&mhba->pdev->dev, "failed to get memory"
781 " for internal flush cache cmd for "
782 "device %d", device_id);
783 retry = 0;
784 continue;
785 } else
786 goto get_cmd;
787 }
788 cmd->scmd = NULL;
789 cmd->cmd_status = REQ_STATUS_PENDING;
790 atomic_set(&cmd->sync_cmd, 0);
791 frame = cmd->frame;
792 frame->req_function = CL_FUN_SCSI_CMD;
793 frame->device_id = device_id;
794 frame->cmd_flag = CMD_FLAG_NON_DATA;
795 frame->data_transfer_length = 0;
796 frame->cdb_length = MAX_COMMAND_SIZE;
797 memset(frame->cdb, 0, MAX_COMMAND_SIZE);
798 frame->cdb[0] = SCSI_CMD_MARVELL_SPECIFIC;
799 frame->cdb[1] = CDB_CORE_MODULE;
800 frame->cdb[2] = CDB_CORE_SHUTDOWN;
801
802 mvumi_issue_blocked_cmd(mhba, cmd);
803 if (cmd->cmd_status != SAM_STAT_GOOD) {
804 dev_err(&mhba->pdev->dev,
805 "device %d flush cache failed, status=0x%x.\n",
806 device_id, cmd->cmd_status);
807 }
808
809 mvumi_delete_internal_cmd(mhba, cmd);
810 }
811 return 0;
812 }
813
814 static unsigned char
815 mvumi_calculate_checksum(struct mvumi_hs_header *p_header,
816 unsigned short len)
817 {
818 unsigned char *ptr;
819 unsigned char ret = 0, i;
820
821 ptr = (unsigned char *) p_header->frame_content;
822 for (i = 0; i < len; i++) {
823 ret ^= *ptr;
824 ptr++;
825 }
826
827 return ret;
828 }
829
830 static void mvumi_hs_build_page(struct mvumi_hba *mhba,
831 struct mvumi_hs_header *hs_header)
832 {
833 struct mvumi_hs_page2 *hs_page2;
834 struct mvumi_hs_page4 *hs_page4;
835 struct mvumi_hs_page3 *hs_page3;
836 u64 time;
837 u64 local_time;
838
839 switch (hs_header->page_code) {
840 case HS_PAGE_HOST_INFO:
841 hs_page2 = (struct mvumi_hs_page2 *) hs_header;
842 hs_header->frame_length = sizeof(*hs_page2) - 4;
843 memset(hs_header->frame_content, 0, hs_header->frame_length);
844 hs_page2->host_type = 3; /* 3 mean linux*/
845 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC)
846 hs_page2->host_cap = 0x08;/* host dynamic source mode */
847 hs_page2->host_ver.ver_major = VER_MAJOR;
848 hs_page2->host_ver.ver_minor = VER_MINOR;
849 hs_page2->host_ver.ver_oem = VER_OEM;
850 hs_page2->host_ver.ver_build = VER_BUILD;
851 hs_page2->system_io_bus = 0;
852 hs_page2->slot_number = 0;
853 hs_page2->intr_level = 0;
854 hs_page2->intr_vector = 0;
855 time = ktime_get_real_seconds();
856 local_time = (time - (sys_tz.tz_minuteswest * 60));
857 hs_page2->seconds_since1970 = local_time;
858 hs_header->checksum = mvumi_calculate_checksum(hs_header,
859 hs_header->frame_length);
860 break;
861
862 case HS_PAGE_FIRM_CTL:
863 hs_page3 = (struct mvumi_hs_page3 *) hs_header;
864 hs_header->frame_length = sizeof(*hs_page3) - 4;
865 memset(hs_header->frame_content, 0, hs_header->frame_length);
866 hs_header->checksum = mvumi_calculate_checksum(hs_header,
867 hs_header->frame_length);
868 break;
869
870 case HS_PAGE_CL_INFO:
871 hs_page4 = (struct mvumi_hs_page4 *) hs_header;
872 hs_header->frame_length = sizeof(*hs_page4) - 4;
873 memset(hs_header->frame_content, 0, hs_header->frame_length);
874 hs_page4->ib_baseaddr_l = lower_32_bits(mhba->ib_list_phys);
875 hs_page4->ib_baseaddr_h = upper_32_bits(mhba->ib_list_phys);
876
877 hs_page4->ob_baseaddr_l = lower_32_bits(mhba->ob_list_phys);
878 hs_page4->ob_baseaddr_h = upper_32_bits(mhba->ob_list_phys);
879 hs_page4->ib_entry_size = mhba->ib_max_size_setting;
880 hs_page4->ob_entry_size = mhba->ob_max_size_setting;
881 if (mhba->hba_capability
882 & HS_CAPABILITY_NEW_PAGE_IO_DEPTH_DEF) {
883 hs_page4->ob_depth = find_first_bit((unsigned long *)
884 &mhba->list_num_io,
885 BITS_PER_LONG);
886 hs_page4->ib_depth = find_first_bit((unsigned long *)
887 &mhba->list_num_io,
888 BITS_PER_LONG);
889 } else {
890 hs_page4->ob_depth = (u8) mhba->list_num_io;
891 hs_page4->ib_depth = (u8) mhba->list_num_io;
892 }
893 hs_header->checksum = mvumi_calculate_checksum(hs_header,
894 hs_header->frame_length);
895 break;
896
897 default:
898 dev_err(&mhba->pdev->dev, "cannot build page, code[0x%x]\n",
899 hs_header->page_code);
900 break;
901 }
902 }
903
904 /**
905 * mvumi_init_data - Initialize requested date for FW
906 * @mhba: Adapter soft state
907 */
908 static int mvumi_init_data(struct mvumi_hba *mhba)
909 {
910 struct mvumi_ob_data *ob_pool;
911 struct mvumi_res *res_mgnt;
912 unsigned int tmp_size, offset, i;
913 void *virmem, *v;
914 dma_addr_t p;
915
916 if (mhba->fw_flag & MVUMI_FW_ALLOC)
917 return 0;
918
919 tmp_size = mhba->ib_max_size * mhba->max_io;
920 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC)
921 tmp_size += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
922
923 tmp_size += 128 + mhba->ob_max_size * mhba->max_io;
924 tmp_size += 8 + sizeof(u32)*2 + 16;
925
926 res_mgnt = mvumi_alloc_mem_resource(mhba,
927 RESOURCE_UNCACHED_MEMORY, tmp_size);
928 if (!res_mgnt) {
929 dev_err(&mhba->pdev->dev,
930 "failed to allocate memory for inbound list\n");
931 goto fail_alloc_dma_buf;
932 }
933
934 p = res_mgnt->bus_addr;
935 v = res_mgnt->virt_addr;
936 /* ib_list */
937 offset = round_up(p, 128) - p;
938 p += offset;
939 v += offset;
940 mhba->ib_list = v;
941 mhba->ib_list_phys = p;
942 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
943 v += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
944 p += sizeof(struct mvumi_dyn_list_entry) * mhba->max_io;
945 mhba->ib_frame = v;
946 mhba->ib_frame_phys = p;
947 }
948 v += mhba->ib_max_size * mhba->max_io;
949 p += mhba->ib_max_size * mhba->max_io;
950
951 /* ib shadow */
952 offset = round_up(p, 8) - p;
953 p += offset;
954 v += offset;
955 mhba->ib_shadow = v;
956 mhba->ib_shadow_phys = p;
957 p += sizeof(u32)*2;
958 v += sizeof(u32)*2;
959 /* ob shadow */
960 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580) {
961 offset = round_up(p, 8) - p;
962 p += offset;
963 v += offset;
964 mhba->ob_shadow = v;
965 mhba->ob_shadow_phys = p;
966 p += 8;
967 v += 8;
968 } else {
969 offset = round_up(p, 4) - p;
970 p += offset;
971 v += offset;
972 mhba->ob_shadow = v;
973 mhba->ob_shadow_phys = p;
974 p += 4;
975 v += 4;
976 }
977
978 /* ob list */
979 offset = round_up(p, 128) - p;
980 p += offset;
981 v += offset;
982
983 mhba->ob_list = v;
984 mhba->ob_list_phys = p;
985
986 /* ob data pool */
987 tmp_size = mhba->max_io * (mhba->ob_max_size + sizeof(*ob_pool));
988 tmp_size = round_up(tmp_size, 8);
989
990 res_mgnt = mvumi_alloc_mem_resource(mhba,
991 RESOURCE_CACHED_MEMORY, tmp_size);
992 if (!res_mgnt) {
993 dev_err(&mhba->pdev->dev,
994 "failed to allocate memory for outbound data buffer\n");
995 goto fail_alloc_dma_buf;
996 }
997 virmem = res_mgnt->virt_addr;
998
999 for (i = mhba->max_io; i != 0; i--) {
1000 ob_pool = (struct mvumi_ob_data *) virmem;
1001 list_add_tail(&ob_pool->list, &mhba->ob_data_list);
1002 virmem += mhba->ob_max_size + sizeof(*ob_pool);
1003 }
1004
1005 tmp_size = sizeof(unsigned short) * mhba->max_io +
1006 sizeof(struct mvumi_cmd *) * mhba->max_io;
1007 tmp_size += round_up(mhba->max_target_id, sizeof(unsigned char) * 8) /
1008 (sizeof(unsigned char) * 8);
1009
1010 res_mgnt = mvumi_alloc_mem_resource(mhba,
1011 RESOURCE_CACHED_MEMORY, tmp_size);
1012 if (!res_mgnt) {
1013 dev_err(&mhba->pdev->dev,
1014 "failed to allocate memory for tag and target map\n");
1015 goto fail_alloc_dma_buf;
1016 }
1017
1018 virmem = res_mgnt->virt_addr;
1019 mhba->tag_pool.stack = virmem;
1020 mhba->tag_pool.size = mhba->max_io;
1021 tag_init(&mhba->tag_pool, mhba->max_io);
1022 virmem += sizeof(unsigned short) * mhba->max_io;
1023
1024 mhba->tag_cmd = virmem;
1025 virmem += sizeof(struct mvumi_cmd *) * mhba->max_io;
1026
1027 mhba->target_map = virmem;
1028
1029 mhba->fw_flag |= MVUMI_FW_ALLOC;
1030 return 0;
1031
1032 fail_alloc_dma_buf:
1033 mvumi_release_mem_resource(mhba);
1034 return -1;
1035 }
1036
1037 static int mvumi_hs_process_page(struct mvumi_hba *mhba,
1038 struct mvumi_hs_header *hs_header)
1039 {
1040 struct mvumi_hs_page1 *hs_page1;
1041 unsigned char page_checksum;
1042
1043 page_checksum = mvumi_calculate_checksum(hs_header,
1044 hs_header->frame_length);
1045 if (page_checksum != hs_header->checksum) {
1046 dev_err(&mhba->pdev->dev, "checksum error\n");
1047 return -1;
1048 }
1049
1050 switch (hs_header->page_code) {
1051 case HS_PAGE_FIRM_CAP:
1052 hs_page1 = (struct mvumi_hs_page1 *) hs_header;
1053
1054 mhba->max_io = hs_page1->max_io_support;
1055 mhba->list_num_io = hs_page1->cl_inout_list_depth;
1056 mhba->max_transfer_size = hs_page1->max_transfer_size;
1057 mhba->max_target_id = hs_page1->max_devices_support;
1058 mhba->hba_capability = hs_page1->capability;
1059 mhba->ib_max_size_setting = hs_page1->cl_in_max_entry_size;
1060 mhba->ib_max_size = (1 << hs_page1->cl_in_max_entry_size) << 2;
1061
1062 mhba->ob_max_size_setting = hs_page1->cl_out_max_entry_size;
1063 mhba->ob_max_size = (1 << hs_page1->cl_out_max_entry_size) << 2;
1064
1065 dev_dbg(&mhba->pdev->dev, "FW version:%d\n",
1066 hs_page1->fw_ver.ver_build);
1067
1068 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_COMPACT_SG)
1069 mhba->eot_flag = 22;
1070 else
1071 mhba->eot_flag = 27;
1072 if (mhba->hba_capability & HS_CAPABILITY_NEW_PAGE_IO_DEPTH_DEF)
1073 mhba->list_num_io = 1 << hs_page1->cl_inout_list_depth;
1074 break;
1075 default:
1076 dev_err(&mhba->pdev->dev, "handshake: page code error\n");
1077 return -1;
1078 }
1079 return 0;
1080 }
1081
1082 /**
1083 * mvumi_handshake - Move the FW to READY state
1084 * @mhba: Adapter soft state
1085 *
1086 * During the initialization, FW passes can potentially be in any one of
1087 * several possible states. If the FW in operational, waiting-for-handshake
1088 * states, driver must take steps to bring it to ready state. Otherwise, it
1089 * has to wait for the ready state.
1090 */
1091 static int mvumi_handshake(struct mvumi_hba *mhba)
1092 {
1093 unsigned int hs_state, tmp, hs_fun;
1094 struct mvumi_hs_header *hs_header;
1095 struct mvumi_hw_regs *regs = mhba->regs;
1096
1097 if (mhba->fw_state == FW_STATE_STARTING)
1098 hs_state = HS_S_START;
1099 else {
1100 tmp = ioread32(regs->arm_to_pciea_msg0);
1101 hs_state = HS_GET_STATE(tmp);
1102 dev_dbg(&mhba->pdev->dev, "handshake state[0x%x].\n", hs_state);
1103 if (HS_GET_STATUS(tmp) != HS_STATUS_OK) {
1104 mhba->fw_state = FW_STATE_STARTING;
1105 return -1;
1106 }
1107 }
1108
1109 hs_fun = 0;
1110 switch (hs_state) {
1111 case HS_S_START:
1112 mhba->fw_state = FW_STATE_HANDSHAKING;
1113 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1114 HS_SET_STATE(hs_fun, HS_S_RESET);
1115 iowrite32(HANDSHAKE_SIGNATURE, regs->pciea_to_arm_msg1);
1116 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1117 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1118 break;
1119
1120 case HS_S_RESET:
1121 iowrite32(lower_32_bits(mhba->handshake_page_phys),
1122 regs->pciea_to_arm_msg1);
1123 iowrite32(upper_32_bits(mhba->handshake_page_phys),
1124 regs->arm_to_pciea_msg1);
1125 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1126 HS_SET_STATE(hs_fun, HS_S_PAGE_ADDR);
1127 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1128 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1129 break;
1130
1131 case HS_S_PAGE_ADDR:
1132 case HS_S_QUERY_PAGE:
1133 case HS_S_SEND_PAGE:
1134 hs_header = (struct mvumi_hs_header *) mhba->handshake_page;
1135 if (hs_header->page_code == HS_PAGE_FIRM_CAP) {
1136 mhba->hba_total_pages =
1137 ((struct mvumi_hs_page1 *) hs_header)->total_pages;
1138
1139 if (mhba->hba_total_pages == 0)
1140 mhba->hba_total_pages = HS_PAGE_TOTAL-1;
1141 }
1142
1143 if (hs_state == HS_S_QUERY_PAGE) {
1144 if (mvumi_hs_process_page(mhba, hs_header)) {
1145 HS_SET_STATE(hs_fun, HS_S_ABORT);
1146 return -1;
1147 }
1148 if (mvumi_init_data(mhba)) {
1149 HS_SET_STATE(hs_fun, HS_S_ABORT);
1150 return -1;
1151 }
1152 } else if (hs_state == HS_S_PAGE_ADDR) {
1153 hs_header->page_code = 0;
1154 mhba->hba_total_pages = HS_PAGE_TOTAL-1;
1155 }
1156
1157 if ((hs_header->page_code + 1) <= mhba->hba_total_pages) {
1158 hs_header->page_code++;
1159 if (hs_header->page_code != HS_PAGE_FIRM_CAP) {
1160 mvumi_hs_build_page(mhba, hs_header);
1161 HS_SET_STATE(hs_fun, HS_S_SEND_PAGE);
1162 } else
1163 HS_SET_STATE(hs_fun, HS_S_QUERY_PAGE);
1164 } else
1165 HS_SET_STATE(hs_fun, HS_S_END);
1166
1167 HS_SET_STATUS(hs_fun, HS_STATUS_OK);
1168 iowrite32(hs_fun, regs->pciea_to_arm_msg0);
1169 iowrite32(DRBL_HANDSHAKE, regs->pciea_to_arm_drbl_reg);
1170 break;
1171
1172 case HS_S_END:
1173 /* Set communication list ISR */
1174 tmp = ioread32(regs->enpointa_mask_reg);
1175 tmp |= regs->int_comaout | regs->int_comaerr;
1176 iowrite32(tmp, regs->enpointa_mask_reg);
1177 iowrite32(mhba->list_num_io, mhba->ib_shadow);
1178 /* Set InBound List Available count shadow */
1179 iowrite32(lower_32_bits(mhba->ib_shadow_phys),
1180 regs->inb_aval_count_basel);
1181 iowrite32(upper_32_bits(mhba->ib_shadow_phys),
1182 regs->inb_aval_count_baseh);
1183
1184 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143) {
1185 /* Set OutBound List Available count shadow */
1186 iowrite32((mhba->list_num_io-1) |
1187 regs->cl_pointer_toggle,
1188 mhba->ob_shadow);
1189 iowrite32(lower_32_bits(mhba->ob_shadow_phys),
1190 regs->outb_copy_basel);
1191 iowrite32(upper_32_bits(mhba->ob_shadow_phys),
1192 regs->outb_copy_baseh);
1193 }
1194
1195 mhba->ib_cur_slot = (mhba->list_num_io - 1) |
1196 regs->cl_pointer_toggle;
1197 mhba->ob_cur_slot = (mhba->list_num_io - 1) |
1198 regs->cl_pointer_toggle;
1199 mhba->fw_state = FW_STATE_STARTED;
1200
1201 break;
1202 default:
1203 dev_err(&mhba->pdev->dev, "unknown handshake state [0x%x].\n",
1204 hs_state);
1205 return -1;
1206 }
1207 return 0;
1208 }
1209
1210 static unsigned char mvumi_handshake_event(struct mvumi_hba *mhba)
1211 {
1212 unsigned int isr_status;
1213 unsigned long before;
1214
1215 before = jiffies;
1216 mvumi_handshake(mhba);
1217 do {
1218 isr_status = mhba->instancet->read_fw_status_reg(mhba);
1219
1220 if (mhba->fw_state == FW_STATE_STARTED)
1221 return 0;
1222 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
1223 dev_err(&mhba->pdev->dev,
1224 "no handshake response at state 0x%x.\n",
1225 mhba->fw_state);
1226 dev_err(&mhba->pdev->dev,
1227 "isr : global=0x%x,status=0x%x.\n",
1228 mhba->global_isr, isr_status);
1229 return -1;
1230 }
1231 rmb();
1232 usleep_range(1000, 2000);
1233 } while (!(isr_status & DRBL_HANDSHAKE_ISR));
1234
1235 return 0;
1236 }
1237
1238 static unsigned char mvumi_check_handshake(struct mvumi_hba *mhba)
1239 {
1240 unsigned int tmp;
1241 unsigned long before;
1242
1243 before = jiffies;
1244 tmp = ioread32(mhba->regs->arm_to_pciea_msg1);
1245 while ((tmp != HANDSHAKE_READYSTATE) && (tmp != HANDSHAKE_DONESTATE)) {
1246 if (tmp != HANDSHAKE_READYSTATE)
1247 iowrite32(DRBL_MU_RESET,
1248 mhba->regs->pciea_to_arm_drbl_reg);
1249 if (time_after(jiffies, before + FW_MAX_DELAY * HZ)) {
1250 dev_err(&mhba->pdev->dev,
1251 "invalid signature [0x%x].\n", tmp);
1252 return -1;
1253 }
1254 usleep_range(1000, 2000);
1255 rmb();
1256 tmp = ioread32(mhba->regs->arm_to_pciea_msg1);
1257 }
1258
1259 mhba->fw_state = FW_STATE_STARTING;
1260 dev_dbg(&mhba->pdev->dev, "start firmware handshake...\n");
1261 do {
1262 if (mvumi_handshake_event(mhba)) {
1263 dev_err(&mhba->pdev->dev,
1264 "handshake failed at state 0x%x.\n",
1265 mhba->fw_state);
1266 return -1;
1267 }
1268 } while (mhba->fw_state != FW_STATE_STARTED);
1269
1270 dev_dbg(&mhba->pdev->dev, "firmware handshake done\n");
1271
1272 return 0;
1273 }
1274
1275 static unsigned char mvumi_start(struct mvumi_hba *mhba)
1276 {
1277 unsigned int tmp;
1278 struct mvumi_hw_regs *regs = mhba->regs;
1279
1280 /* clear Door bell */
1281 tmp = ioread32(regs->arm_to_pciea_drbl_reg);
1282 iowrite32(tmp, regs->arm_to_pciea_drbl_reg);
1283
1284 iowrite32(regs->int_drbl_int_mask, regs->arm_to_pciea_mask_reg);
1285 tmp = ioread32(regs->enpointa_mask_reg) | regs->int_dl_cpu2pciea;
1286 iowrite32(tmp, regs->enpointa_mask_reg);
1287 msleep(100);
1288 if (mvumi_check_handshake(mhba))
1289 return -1;
1290
1291 return 0;
1292 }
1293
1294 /**
1295 * mvumi_complete_cmd - Completes a command
1296 * @mhba: Adapter soft state
1297 * @cmd: Command to be completed
1298 * @ob_frame: Command response
1299 */
1300 static void mvumi_complete_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd,
1301 struct mvumi_rsp_frame *ob_frame)
1302 {
1303 struct scsi_cmnd *scmd = cmd->scmd;
1304
1305 mvumi_priv(cmd->scmd)->cmd_priv = NULL;
1306 scmd->result = ob_frame->req_status;
1307
1308 switch (ob_frame->req_status) {
1309 case SAM_STAT_GOOD:
1310 scmd->result |= DID_OK << 16;
1311 break;
1312 case SAM_STAT_BUSY:
1313 scmd->result |= DID_BUS_BUSY << 16;
1314 break;
1315 case SAM_STAT_CHECK_CONDITION:
1316 scmd->result |= (DID_OK << 16);
1317 if (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) {
1318 memcpy(cmd->scmd->sense_buffer, ob_frame->payload,
1319 sizeof(struct mvumi_sense_data));
1320 }
1321 break;
1322 default:
1323 scmd->result |= (DID_ABORT << 16);
1324 break;
1325 }
1326
1327 if (scsi_bufflen(scmd))
1328 dma_unmap_sg(&mhba->pdev->dev, scsi_sglist(scmd),
1329 scsi_sg_count(scmd),
1330 scmd->sc_data_direction);
1331 scsi_done(scmd);
1332 mvumi_return_cmd(mhba, cmd);
1333 }
1334
1335 static void mvumi_complete_internal_cmd(struct mvumi_hba *mhba,
1336 struct mvumi_cmd *cmd,
1337 struct mvumi_rsp_frame *ob_frame)
1338 {
1339 if (atomic_read(&cmd->sync_cmd)) {
1340 cmd->cmd_status = ob_frame->req_status;
1341
1342 if ((ob_frame->req_status == SAM_STAT_CHECK_CONDITION) &&
1343 (ob_frame->rsp_flag & CL_RSP_FLAG_SENSEDATA) &&
1344 cmd->data_buf) {
1345 memcpy(cmd->data_buf, ob_frame->payload,
1346 sizeof(struct mvumi_sense_data));
1347 }
1348 atomic_dec(&cmd->sync_cmd);
1349 wake_up(&mhba->int_cmd_wait_q);
1350 }
1351 }
1352
1353 static void mvumi_show_event(struct mvumi_hba *mhba,
1354 struct mvumi_driver_event *ptr)
1355 {
1356 unsigned int i;
1357
1358 dev_warn(&mhba->pdev->dev,
1359 "Event[0x%x] id[0x%x] severity[0x%x] device id[0x%x]\n",
1360 ptr->sequence_no, ptr->event_id, ptr->severity, ptr->device_id);
1361 if (ptr->param_count) {
1362 printk(KERN_WARNING "Event param(len 0x%x): ",
1363 ptr->param_count);
1364 for (i = 0; i < ptr->param_count; i++)
1365 printk(KERN_WARNING "0x%x ", ptr->params[i]);
1366
1367 printk(KERN_WARNING "\n");
1368 }
1369
1370 if (ptr->sense_data_length) {
1371 printk(KERN_WARNING "Event sense data(len 0x%x): ",
1372 ptr->sense_data_length);
1373 for (i = 0; i < ptr->sense_data_length; i++)
1374 printk(KERN_WARNING "0x%x ", ptr->sense_data[i]);
1375 printk(KERN_WARNING "\n");
1376 }
1377 }
1378
1379 static int mvumi_handle_hotplug(struct mvumi_hba *mhba, u16 devid, int status)
1380 {
1381 struct scsi_device *sdev;
1382 int ret = -1;
1383
1384 if (status == DEVICE_OFFLINE) {
1385 sdev = scsi_device_lookup(mhba->shost, 0, devid, 0);
1386 if (sdev) {
1387 dev_dbg(&mhba->pdev->dev, "remove disk %d-%d-%d.\n", 0,
1388 sdev->id, 0);
1389 scsi_remove_device(sdev);
1390 scsi_device_put(sdev);
1391 ret = 0;
1392 } else
1393 dev_err(&mhba->pdev->dev, " no disk[%d] to remove\n",
1394 devid);
1395 } else if (status == DEVICE_ONLINE) {
1396 sdev = scsi_device_lookup(mhba->shost, 0, devid, 0);
1397 if (!sdev) {
1398 scsi_add_device(mhba->shost, 0, devid, 0);
1399 dev_dbg(&mhba->pdev->dev, " add disk %d-%d-%d.\n", 0,
1400 devid, 0);
1401 ret = 0;
1402 } else {
1403 dev_err(&mhba->pdev->dev, " don't add disk %d-%d-%d.\n",
1404 0, devid, 0);
1405 scsi_device_put(sdev);
1406 }
1407 }
1408 return ret;
1409 }
1410
1411 static u64 mvumi_inquiry(struct mvumi_hba *mhba,
1412 unsigned int id, struct mvumi_cmd *cmd)
1413 {
1414 struct mvumi_msg_frame *frame;
1415 u64 wwid = 0;
1416 int cmd_alloc = 0;
1417 int data_buf_len = 64;
1418
1419 if (!cmd) {
1420 cmd = mvumi_create_internal_cmd(mhba, data_buf_len);
1421 if (cmd)
1422 cmd_alloc = 1;
1423 else
1424 return 0;
1425 } else {
1426 memset(cmd->data_buf, 0, data_buf_len);
1427 }
1428 cmd->scmd = NULL;
1429 cmd->cmd_status = REQ_STATUS_PENDING;
1430 atomic_set(&cmd->sync_cmd, 0);
1431 frame = cmd->frame;
1432 frame->device_id = (u16) id;
1433 frame->cmd_flag = CMD_FLAG_DATA_IN;
1434 frame->req_function = CL_FUN_SCSI_CMD;
1435 frame->cdb_length = 6;
1436 frame->data_transfer_length = MVUMI_INQUIRY_LENGTH;
1437 memset(frame->cdb, 0, frame->cdb_length);
1438 frame->cdb[0] = INQUIRY;
1439 frame->cdb[4] = frame->data_transfer_length;
1440
1441 mvumi_issue_blocked_cmd(mhba, cmd);
1442
1443 if (cmd->cmd_status == SAM_STAT_GOOD) {
1444 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143)
1445 wwid = id + 1;
1446 else
1447 memcpy((void *)&wwid,
1448 (cmd->data_buf + MVUMI_INQUIRY_UUID_OFF),
1449 MVUMI_INQUIRY_UUID_LEN);
1450 dev_dbg(&mhba->pdev->dev,
1451 "inquiry device(0:%d:0) wwid(%llx)\n", id, wwid);
1452 } else {
1453 wwid = 0;
1454 }
1455 if (cmd_alloc)
1456 mvumi_delete_internal_cmd(mhba, cmd);
1457
1458 return wwid;
1459 }
1460
1461 static void mvumi_detach_devices(struct mvumi_hba *mhba)
1462 {
1463 struct mvumi_device *mv_dev = NULL , *dev_next;
1464 struct scsi_device *sdev = NULL;
1465
1466 mutex_lock(&mhba->device_lock);
1467
1468 /* detach Hard Disk */
1469 list_for_each_entry_safe(mv_dev, dev_next,
1470 &mhba->shost_dev_list, list) {
1471 mvumi_handle_hotplug(mhba, mv_dev->id, DEVICE_OFFLINE);
1472 list_del_init(&mv_dev->list);
1473 dev_dbg(&mhba->pdev->dev, "release device(0:%d:0) wwid(%llx)\n",
1474 mv_dev->id, mv_dev->wwid);
1475 kfree(mv_dev);
1476 }
1477 list_for_each_entry_safe(mv_dev, dev_next, &mhba->mhba_dev_list, list) {
1478 list_del_init(&mv_dev->list);
1479 dev_dbg(&mhba->pdev->dev, "release device(0:%d:0) wwid(%llx)\n",
1480 mv_dev->id, mv_dev->wwid);
1481 kfree(mv_dev);
1482 }
1483
1484 /* detach virtual device */
1485 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
1486 sdev = scsi_device_lookup(mhba->shost, 0,
1487 mhba->max_target_id - 1, 0);
1488
1489 if (sdev) {
1490 scsi_remove_device(sdev);
1491 scsi_device_put(sdev);
1492 }
1493
1494 mutex_unlock(&mhba->device_lock);
1495 }
1496
1497 static void mvumi_rescan_devices(struct mvumi_hba *mhba, int id)
1498 {
1499 struct scsi_device *sdev;
1500
1501 sdev = scsi_device_lookup(mhba->shost, 0, id, 0);
1502 if (sdev) {
1503 scsi_rescan_device(sdev);
1504 scsi_device_put(sdev);
1505 }
1506 }
1507
1508 static int mvumi_match_devices(struct mvumi_hba *mhba, int id, u64 wwid)
1509 {
1510 struct mvumi_device *mv_dev = NULL;
1511
1512 list_for_each_entry(mv_dev, &mhba->shost_dev_list, list) {
1513 if (mv_dev->wwid == wwid) {
1514 if (mv_dev->id != id) {
1515 dev_err(&mhba->pdev->dev,
1516 "%s has same wwid[%llx] ,"
1517 " but different id[%d %d]\n",
1518 __func__, mv_dev->wwid, mv_dev->id, id);
1519 return -1;
1520 } else {
1521 if (mhba->pdev->device ==
1522 PCI_DEVICE_ID_MARVELL_MV9143)
1523 mvumi_rescan_devices(mhba, id);
1524 return 1;
1525 }
1526 }
1527 }
1528 return 0;
1529 }
1530
1531 static void mvumi_remove_devices(struct mvumi_hba *mhba, int id)
1532 {
1533 struct mvumi_device *mv_dev = NULL, *dev_next;
1534
1535 list_for_each_entry_safe(mv_dev, dev_next,
1536 &mhba->shost_dev_list, list) {
1537 if (mv_dev->id == id) {
1538 dev_dbg(&mhba->pdev->dev,
1539 "detach device(0:%d:0) wwid(%llx) from HOST\n",
1540 mv_dev->id, mv_dev->wwid);
1541 mvumi_handle_hotplug(mhba, mv_dev->id, DEVICE_OFFLINE);
1542 list_del_init(&mv_dev->list);
1543 kfree(mv_dev);
1544 }
1545 }
1546 }
1547
1548 static int mvumi_probe_devices(struct mvumi_hba *mhba)
1549 {
1550 int id, maxid;
1551 u64 wwid = 0;
1552 struct mvumi_device *mv_dev = NULL;
1553 struct mvumi_cmd *cmd = NULL;
1554 int found = 0;
1555
1556 cmd = mvumi_create_internal_cmd(mhba, 64);
1557 if (!cmd)
1558 return -1;
1559
1560 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9143)
1561 maxid = mhba->max_target_id;
1562 else
1563 maxid = mhba->max_target_id - 1;
1564
1565 for (id = 0; id < maxid; id++) {
1566 wwid = mvumi_inquiry(mhba, id, cmd);
1567 if (!wwid) {
1568 /* device no response, remove it */
1569 mvumi_remove_devices(mhba, id);
1570 } else {
1571 /* device response, add it */
1572 found = mvumi_match_devices(mhba, id, wwid);
1573 if (!found) {
1574 mvumi_remove_devices(mhba, id);
1575 mv_dev = kzalloc(sizeof(struct mvumi_device),
1576 GFP_KERNEL);
1577 if (!mv_dev) {
1578 dev_err(&mhba->pdev->dev,
1579 "%s alloc mv_dev failed\n",
1580 __func__);
1581 continue;
1582 }
1583 mv_dev->id = id;
1584 mv_dev->wwid = wwid;
1585 mv_dev->sdev = NULL;
1586 INIT_LIST_HEAD(&mv_dev->list);
1587 list_add_tail(&mv_dev->list,
1588 &mhba->mhba_dev_list);
1589 dev_dbg(&mhba->pdev->dev,
1590 "probe a new device(0:%d:0)"
1591 " wwid(%llx)\n", id, mv_dev->wwid);
1592 } else if (found == -1)
1593 return -1;
1594 else
1595 continue;
1596 }
1597 }
1598
1599 if (cmd)
1600 mvumi_delete_internal_cmd(mhba, cmd);
1601
1602 return 0;
1603 }
1604
1605 static int mvumi_rescan_bus(void *data)
1606 {
1607 int ret = 0;
1608 struct mvumi_hba *mhba = (struct mvumi_hba *) data;
1609 struct mvumi_device *mv_dev = NULL , *dev_next;
1610
1611 while (!kthread_should_stop()) {
1612
1613 set_current_state(TASK_INTERRUPTIBLE);
1614 if (!atomic_read(&mhba->pnp_count))
1615 schedule();
1616 msleep(1000);
1617 atomic_set(&mhba->pnp_count, 0);
1618 __set_current_state(TASK_RUNNING);
1619
1620 mutex_lock(&mhba->device_lock);
1621 ret = mvumi_probe_devices(mhba);
1622 if (!ret) {
1623 list_for_each_entry_safe(mv_dev, dev_next,
1624 &mhba->mhba_dev_list, list) {
1625 if (mvumi_handle_hotplug(mhba, mv_dev->id,
1626 DEVICE_ONLINE)) {
1627 dev_err(&mhba->pdev->dev,
1628 "%s add device(0:%d:0) failed"
1629 "wwid(%llx) has exist\n",
1630 __func__,
1631 mv_dev->id, mv_dev->wwid);
1632 list_del_init(&mv_dev->list);
1633 kfree(mv_dev);
1634 } else {
1635 list_move_tail(&mv_dev->list,
1636 &mhba->shost_dev_list);
1637 }
1638 }
1639 }
1640 mutex_unlock(&mhba->device_lock);
1641 }
1642 return 0;
1643 }
1644
1645 static void mvumi_proc_msg(struct mvumi_hba *mhba,
1646 struct mvumi_hotplug_event *param)
1647 {
1648 u16 size = param->size;
1649 const unsigned long *ar_bitmap;
1650 const unsigned long *re_bitmap;
1651 int index;
1652
1653 if (mhba->fw_flag & MVUMI_FW_ATTACH) {
1654 index = -1;
1655 ar_bitmap = (const unsigned long *) param->bitmap;
1656 re_bitmap = (const unsigned long *) &param->bitmap[size >> 3];
1657
1658 mutex_lock(&mhba->sas_discovery_mutex);
1659 do {
1660 index = find_next_zero_bit(ar_bitmap, size, index + 1);
1661 if (index >= size)
1662 break;
1663 mvumi_handle_hotplug(mhba, index, DEVICE_ONLINE);
1664 } while (1);
1665
1666 index = -1;
1667 do {
1668 index = find_next_zero_bit(re_bitmap, size, index + 1);
1669 if (index >= size)
1670 break;
1671 mvumi_handle_hotplug(mhba, index, DEVICE_OFFLINE);
1672 } while (1);
1673 mutex_unlock(&mhba->sas_discovery_mutex);
1674 }
1675 }
1676
1677 static void mvumi_notification(struct mvumi_hba *mhba, u8 msg, void *buffer)
1678 {
1679 if (msg == APICDB1_EVENT_GETEVENT) {
1680 int i, count;
1681 struct mvumi_driver_event *param = NULL;
1682 struct mvumi_event_req *er = buffer;
1683 count = er->count;
1684 if (count > MAX_EVENTS_RETURNED) {
1685 dev_err(&mhba->pdev->dev, "event count[0x%x] is bigger"
1686 " than max event count[0x%x].\n",
1687 count, MAX_EVENTS_RETURNED);
1688 return;
1689 }
1690 for (i = 0; i < count; i++) {
1691 param = &er->events[i];
1692 mvumi_show_event(mhba, param);
1693 }
1694 } else if (msg == APICDB1_HOST_GETEVENT) {
1695 mvumi_proc_msg(mhba, buffer);
1696 }
1697 }
1698
1699 static int mvumi_get_event(struct mvumi_hba *mhba, unsigned char msg)
1700 {
1701 struct mvumi_cmd *cmd;
1702 struct mvumi_msg_frame *frame;
1703
1704 cmd = mvumi_create_internal_cmd(mhba, 512);
1705 if (!cmd)
1706 return -1;
1707 cmd->scmd = NULL;
1708 cmd->cmd_status = REQ_STATUS_PENDING;
1709 atomic_set(&cmd->sync_cmd, 0);
1710 frame = cmd->frame;
1711 frame->device_id = 0;
1712 frame->cmd_flag = CMD_FLAG_DATA_IN;
1713 frame->req_function = CL_FUN_SCSI_CMD;
1714 frame->cdb_length = MAX_COMMAND_SIZE;
1715 frame->data_transfer_length = sizeof(struct mvumi_event_req);
1716 memset(frame->cdb, 0, MAX_COMMAND_SIZE);
1717 frame->cdb[0] = APICDB0_EVENT;
1718 frame->cdb[1] = msg;
1719 mvumi_issue_blocked_cmd(mhba, cmd);
1720
1721 if (cmd->cmd_status != SAM_STAT_GOOD)
1722 dev_err(&mhba->pdev->dev, "get event failed, status=0x%x.\n",
1723 cmd->cmd_status);
1724 else
1725 mvumi_notification(mhba, cmd->frame->cdb[1], cmd->data_buf);
1726
1727 mvumi_delete_internal_cmd(mhba, cmd);
1728 return 0;
1729 }
1730
1731 static void mvumi_scan_events(struct work_struct *work)
1732 {
1733 struct mvumi_events_wq *mu_ev =
1734 container_of(work, struct mvumi_events_wq, work_q);
1735
1736 mvumi_get_event(mu_ev->mhba, mu_ev->event);
1737 kfree(mu_ev);
1738 }
1739
1740 static void mvumi_launch_events(struct mvumi_hba *mhba, u32 isr_status)
1741 {
1742 struct mvumi_events_wq *mu_ev;
1743
1744 while (isr_status & (DRBL_BUS_CHANGE | DRBL_EVENT_NOTIFY)) {
1745 if (isr_status & DRBL_BUS_CHANGE) {
1746 atomic_inc(&mhba->pnp_count);
1747 wake_up_process(mhba->dm_thread);
1748 isr_status &= ~(DRBL_BUS_CHANGE);
1749 continue;
1750 }
1751
1752 mu_ev = kzalloc(sizeof(*mu_ev), GFP_ATOMIC);
1753 if (mu_ev) {
1754 INIT_WORK(&mu_ev->work_q, mvumi_scan_events);
1755 mu_ev->mhba = mhba;
1756 mu_ev->event = APICDB1_EVENT_GETEVENT;
1757 isr_status &= ~(DRBL_EVENT_NOTIFY);
1758 mu_ev->param = NULL;
1759 schedule_work(&mu_ev->work_q);
1760 }
1761 }
1762 }
1763
1764 static void mvumi_handle_clob(struct mvumi_hba *mhba)
1765 {
1766 struct mvumi_rsp_frame *ob_frame;
1767 struct mvumi_cmd *cmd;
1768 struct mvumi_ob_data *pool;
1769
1770 while (!list_empty(&mhba->free_ob_list)) {
1771 pool = list_first_entry(&mhba->free_ob_list,
1772 struct mvumi_ob_data, list);
1773 list_del_init(&pool->list);
1774 list_add_tail(&pool->list, &mhba->ob_data_list);
1775
1776 ob_frame = (struct mvumi_rsp_frame *) &pool->data[0];
1777 cmd = mhba->tag_cmd[ob_frame->tag];
1778
1779 atomic_dec(&mhba->fw_outstanding);
1780 mhba->tag_cmd[ob_frame->tag] = NULL;
1781 tag_release_one(mhba, &mhba->tag_pool, ob_frame->tag);
1782 if (cmd->scmd)
1783 mvumi_complete_cmd(mhba, cmd, ob_frame);
1784 else
1785 mvumi_complete_internal_cmd(mhba, cmd, ob_frame);
1786 }
1787 mhba->instancet->fire_cmd(mhba, NULL);
1788 }
1789
1790 static irqreturn_t mvumi_isr_handler(int irq, void *devp)
1791 {
1792 struct mvumi_hba *mhba = (struct mvumi_hba *) devp;
1793 unsigned long flags;
1794
1795 spin_lock_irqsave(mhba->shost->host_lock, flags);
1796 if (unlikely(mhba->instancet->clear_intr(mhba) || !mhba->global_isr)) {
1797 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
1798 return IRQ_NONE;
1799 }
1800
1801 if (mhba->global_isr & mhba->regs->int_dl_cpu2pciea) {
1802 if (mhba->isr_status & (DRBL_BUS_CHANGE | DRBL_EVENT_NOTIFY))
1803 mvumi_launch_events(mhba, mhba->isr_status);
1804 if (mhba->isr_status & DRBL_HANDSHAKE_ISR) {
1805 dev_warn(&mhba->pdev->dev, "enter handshake again!\n");
1806 mvumi_handshake(mhba);
1807 }
1808
1809 }
1810
1811 if (mhba->global_isr & mhba->regs->int_comaout)
1812 mvumi_receive_ob_list_entry(mhba);
1813
1814 mhba->global_isr = 0;
1815 mhba->isr_status = 0;
1816 if (mhba->fw_state == FW_STATE_STARTED)
1817 mvumi_handle_clob(mhba);
1818 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
1819 return IRQ_HANDLED;
1820 }
1821
1822 static enum mvumi_qc_result mvumi_send_command(struct mvumi_hba *mhba,
1823 struct mvumi_cmd *cmd)
1824 {
1825 void *ib_entry;
1826 struct mvumi_msg_frame *ib_frame;
1827 unsigned int frame_len;
1828
1829 ib_frame = cmd->frame;
1830 if (unlikely(mhba->fw_state != FW_STATE_STARTED)) {
1831 dev_dbg(&mhba->pdev->dev, "firmware not ready.\n");
1832 return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
1833 }
1834 if (tag_is_empty(&mhba->tag_pool)) {
1835 dev_dbg(&mhba->pdev->dev, "no free tag.\n");
1836 return MV_QUEUE_COMMAND_RESULT_NO_RESOURCE;
1837 }
1838 mvumi_get_ib_list_entry(mhba, &ib_entry);
1839
1840 cmd->frame->tag = tag_get_one(mhba, &mhba->tag_pool);
1841 cmd->frame->request_id = mhba->io_seq++;
1842 cmd->request_id = cmd->frame->request_id;
1843 mhba->tag_cmd[cmd->frame->tag] = cmd;
1844 frame_len = sizeof(*ib_frame) +
1845 ib_frame->sg_counts * sizeof(struct mvumi_sgl);
1846 if (mhba->hba_capability & HS_CAPABILITY_SUPPORT_DYN_SRC) {
1847 struct mvumi_dyn_list_entry *dle;
1848 dle = ib_entry;
1849 dle->src_low_addr =
1850 cpu_to_le32(lower_32_bits(cmd->frame_phys));
1851 dle->src_high_addr =
1852 cpu_to_le32(upper_32_bits(cmd->frame_phys));
1853 dle->if_length = (frame_len >> 2) & 0xFFF;
1854 } else {
1855 memcpy(ib_entry, ib_frame, frame_len);
1856 }
1857 return MV_QUEUE_COMMAND_RESULT_SENT;
1858 }
1859
1860 static void mvumi_fire_cmd(struct mvumi_hba *mhba, struct mvumi_cmd *cmd)
1861 {
1862 unsigned short num_of_cl_sent = 0;
1863 unsigned int count;
1864 enum mvumi_qc_result result;
1865
1866 if (cmd)
1867 list_add_tail(&cmd->queue_pointer, &mhba->waiting_req_list);
1868 count = mhba->instancet->check_ib_list(mhba);
1869 if (list_empty(&mhba->waiting_req_list) || !count)
1870 return;
1871
1872 do {
1873 cmd = list_first_entry(&mhba->waiting_req_list,
1874 struct mvumi_cmd, queue_pointer);
1875 list_del_init(&cmd->queue_pointer);
1876 result = mvumi_send_command(mhba, cmd);
1877 switch (result) {
1878 case MV_QUEUE_COMMAND_RESULT_SENT:
1879 num_of_cl_sent++;
1880 break;
1881 case MV_QUEUE_COMMAND_RESULT_NO_RESOURCE:
1882 list_add(&cmd->queue_pointer, &mhba->waiting_req_list);
1883 if (num_of_cl_sent > 0)
1884 mvumi_send_ib_list_entry(mhba);
1885
1886 return;
1887 }
1888 } while (!list_empty(&mhba->waiting_req_list) && count--);
1889
1890 if (num_of_cl_sent > 0)
1891 mvumi_send_ib_list_entry(mhba);
1892 }
1893
1894 /**
1895 * mvumi_enable_intr - Enables interrupts
1896 * @mhba: Adapter soft state
1897 */
1898 static void mvumi_enable_intr(struct mvumi_hba *mhba)
1899 {
1900 unsigned int mask;
1901 struct mvumi_hw_regs *regs = mhba->regs;
1902
1903 iowrite32(regs->int_drbl_int_mask, regs->arm_to_pciea_mask_reg);
1904 mask = ioread32(regs->enpointa_mask_reg);
1905 mask |= regs->int_dl_cpu2pciea | regs->int_comaout | regs->int_comaerr;
1906 iowrite32(mask, regs->enpointa_mask_reg);
1907 }
1908
1909 /**
1910 * mvumi_disable_intr -Disables interrupt
1911 * @mhba: Adapter soft state
1912 */
1913 static void mvumi_disable_intr(struct mvumi_hba *mhba)
1914 {
1915 unsigned int mask;
1916 struct mvumi_hw_regs *regs = mhba->regs;
1917
1918 iowrite32(0, regs->arm_to_pciea_mask_reg);
1919 mask = ioread32(regs->enpointa_mask_reg);
1920 mask &= ~(regs->int_dl_cpu2pciea | regs->int_comaout |
1921 regs->int_comaerr);
1922 iowrite32(mask, regs->enpointa_mask_reg);
1923 }
1924
1925 static int mvumi_clear_intr(void *extend)
1926 {
1927 struct mvumi_hba *mhba = (struct mvumi_hba *) extend;
1928 unsigned int status, isr_status = 0, tmp = 0;
1929 struct mvumi_hw_regs *regs = mhba->regs;
1930
1931 status = ioread32(regs->main_int_cause_reg);
1932 if (!(status & regs->int_mu) || status == 0xFFFFFFFF)
1933 return 1;
1934 if (unlikely(status & regs->int_comaerr)) {
1935 tmp = ioread32(regs->outb_isr_cause);
1936 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580) {
1937 if (tmp & regs->clic_out_err) {
1938 iowrite32(tmp & regs->clic_out_err,
1939 regs->outb_isr_cause);
1940 }
1941 } else {
1942 if (tmp & (regs->clic_in_err | regs->clic_out_err))
1943 iowrite32(tmp & (regs->clic_in_err |
1944 regs->clic_out_err),
1945 regs->outb_isr_cause);
1946 }
1947 status ^= mhba->regs->int_comaerr;
1948 /* inbound or outbound parity error, command will timeout */
1949 }
1950 if (status & regs->int_comaout) {
1951 tmp = ioread32(regs->outb_isr_cause);
1952 if (tmp & regs->clic_irq)
1953 iowrite32(tmp & regs->clic_irq, regs->outb_isr_cause);
1954 }
1955 if (status & regs->int_dl_cpu2pciea) {
1956 isr_status = ioread32(regs->arm_to_pciea_drbl_reg);
1957 if (isr_status)
1958 iowrite32(isr_status, regs->arm_to_pciea_drbl_reg);
1959 }
1960
1961 mhba->global_isr = status;
1962 mhba->isr_status = isr_status;
1963
1964 return 0;
1965 }
1966
1967 /**
1968 * mvumi_read_fw_status_reg - returns the current FW status value
1969 * @mhba: Adapter soft state
1970 */
1971 static unsigned int mvumi_read_fw_status_reg(struct mvumi_hba *mhba)
1972 {
1973 unsigned int status;
1974
1975 status = ioread32(mhba->regs->arm_to_pciea_drbl_reg);
1976 if (status)
1977 iowrite32(status, mhba->regs->arm_to_pciea_drbl_reg);
1978 return status;
1979 }
1980
1981 static struct mvumi_instance_template mvumi_instance_9143 = {
1982 .fire_cmd = mvumi_fire_cmd,
1983 .enable_intr = mvumi_enable_intr,
1984 .disable_intr = mvumi_disable_intr,
1985 .clear_intr = mvumi_clear_intr,
1986 .read_fw_status_reg = mvumi_read_fw_status_reg,
1987 .check_ib_list = mvumi_check_ib_list_9143,
1988 .check_ob_list = mvumi_check_ob_list_9143,
1989 .reset_host = mvumi_reset_host_9143,
1990 };
1991
1992 static struct mvumi_instance_template mvumi_instance_9580 = {
1993 .fire_cmd = mvumi_fire_cmd,
1994 .enable_intr = mvumi_enable_intr,
1995 .disable_intr = mvumi_disable_intr,
1996 .clear_intr = mvumi_clear_intr,
1997 .read_fw_status_reg = mvumi_read_fw_status_reg,
1998 .check_ib_list = mvumi_check_ib_list_9580,
1999 .check_ob_list = mvumi_check_ob_list_9580,
2000 .reset_host = mvumi_reset_host_9580,
2001 };
2002
2003 static int mvumi_slave_configure(struct scsi_device *sdev)
2004 {
2005 struct mvumi_hba *mhba;
2006 unsigned char bitcount = sizeof(unsigned char) * 8;
2007
2008 mhba = (struct mvumi_hba *) sdev->host->hostdata;
2009 if (sdev->id >= mhba->max_target_id)
2010 return -EINVAL;
2011
2012 mhba->target_map[sdev->id / bitcount] |= (1 << (sdev->id % bitcount));
2013 return 0;
2014 }
2015
2016 /**
2017 * mvumi_build_frame - Prepares a direct cdb (DCDB) command
2018 * @mhba: Adapter soft state
2019 * @scmd: SCSI command
2020 * @cmd: Command to be prepared in
2021 *
2022 * This function prepares CDB commands. These are typcially pass-through
2023 * commands to the devices.
2024 */
2025 static unsigned char mvumi_build_frame(struct mvumi_hba *mhba,
2026 struct scsi_cmnd *scmd, struct mvumi_cmd *cmd)
2027 {
2028 struct mvumi_msg_frame *pframe;
2029
2030 cmd->scmd = scmd;
2031 cmd->cmd_status = REQ_STATUS_PENDING;
2032 pframe = cmd->frame;
2033 pframe->device_id = ((unsigned short) scmd->device->id) |
2034 (((unsigned short) scmd->device->lun) << 8);
2035 pframe->cmd_flag = 0;
2036
2037 switch (scmd->sc_data_direction) {
2038 case DMA_NONE:
2039 pframe->cmd_flag |= CMD_FLAG_NON_DATA;
2040 break;
2041 case DMA_FROM_DEVICE:
2042 pframe->cmd_flag |= CMD_FLAG_DATA_IN;
2043 break;
2044 case DMA_TO_DEVICE:
2045 pframe->cmd_flag |= CMD_FLAG_DATA_OUT;
2046 break;
2047 case DMA_BIDIRECTIONAL:
2048 default:
2049 dev_warn(&mhba->pdev->dev, "unexpected data direction[%d] "
2050 "cmd[0x%x]\n", scmd->sc_data_direction, scmd->cmnd[0]);
2051 goto error;
2052 }
2053
2054 pframe->cdb_length = scmd->cmd_len;
2055 memcpy(pframe->cdb, scmd->cmnd, pframe->cdb_length);
2056 pframe->req_function = CL_FUN_SCSI_CMD;
2057 if (scsi_bufflen(scmd)) {
2058 if (mvumi_make_sgl(mhba, scmd, &pframe->payload[0],
2059 &pframe->sg_counts))
2060 goto error;
2061
2062 pframe->data_transfer_length = scsi_bufflen(scmd);
2063 } else {
2064 pframe->sg_counts = 0;
2065 pframe->data_transfer_length = 0;
2066 }
2067 return 0;
2068
2069 error:
2070 scsi_build_sense(scmd, 0, ILLEGAL_REQUEST, 0x24, 0);
2071 return -1;
2072 }
2073
2074 /**
2075 * mvumi_queue_command - Queue entry point
2076 * @shost: Scsi host to queue command on
2077 * @scmd: SCSI command to be queued
2078 */
2079 static int mvumi_queue_command(struct Scsi_Host *shost,
2080 struct scsi_cmnd *scmd)
2081 {
2082 struct mvumi_cmd *cmd;
2083 struct mvumi_hba *mhba;
2084 unsigned long irq_flags;
2085
2086 spin_lock_irqsave(shost->host_lock, irq_flags);
2087
2088 mhba = (struct mvumi_hba *) shost->hostdata;
2089 scmd->result = 0;
2090 cmd = mvumi_get_cmd(mhba);
2091 if (unlikely(!cmd)) {
2092 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2093 return SCSI_MLQUEUE_HOST_BUSY;
2094 }
2095
2096 if (unlikely(mvumi_build_frame(mhba, scmd, cmd)))
2097 goto out_return_cmd;
2098
2099 cmd->scmd = scmd;
2100 mvumi_priv(scmd)->cmd_priv = cmd;
2101 mhba->instancet->fire_cmd(mhba, cmd);
2102 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2103 return 0;
2104
2105 out_return_cmd:
2106 mvumi_return_cmd(mhba, cmd);
2107 scsi_done(scmd);
2108 spin_unlock_irqrestore(shost->host_lock, irq_flags);
2109 return 0;
2110 }
2111
2112 static enum scsi_timeout_action mvumi_timed_out(struct scsi_cmnd *scmd)
2113 {
2114 struct mvumi_cmd *cmd = mvumi_priv(scmd)->cmd_priv;
2115 struct Scsi_Host *host = scmd->device->host;
2116 struct mvumi_hba *mhba = shost_priv(host);
2117 unsigned long flags;
2118
2119 spin_lock_irqsave(mhba->shost->host_lock, flags);
2120
2121 if (mhba->tag_cmd[cmd->frame->tag]) {
2122 mhba->tag_cmd[cmd->frame->tag] = NULL;
2123 tag_release_one(mhba, &mhba->tag_pool, cmd->frame->tag);
2124 }
2125 if (!list_empty(&cmd->queue_pointer))
2126 list_del_init(&cmd->queue_pointer);
2127 else
2128 atomic_dec(&mhba->fw_outstanding);
2129
2130 scmd->result = (DID_ABORT << 16);
2131 mvumi_priv(scmd)->cmd_priv = NULL;
2132 if (scsi_bufflen(scmd)) {
2133 dma_unmap_sg(&mhba->pdev->dev, scsi_sglist(scmd),
2134 scsi_sg_count(scmd),
2135 scmd->sc_data_direction);
2136 }
2137 mvumi_return_cmd(mhba, cmd);
2138 spin_unlock_irqrestore(mhba->shost->host_lock, flags);
2139
2140 return SCSI_EH_NOT_HANDLED;
2141 }
2142
2143 static int
2144 mvumi_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2145 sector_t capacity, int geom[])
2146 {
2147 int heads, sectors;
2148 sector_t cylinders;
2149 unsigned long tmp;
2150
2151 heads = 64;
2152 sectors = 32;
2153 tmp = heads * sectors;
2154 cylinders = capacity;
2155 sector_div(cylinders, tmp);
2156
2157 if (capacity >= 0x200000) {
2158 heads = 255;
2159 sectors = 63;
2160 tmp = heads * sectors;
2161 cylinders = capacity;
2162 sector_div(cylinders, tmp);
2163 }
2164 geom[0] = heads;
2165 geom[1] = sectors;
2166 geom[2] = cylinders;
2167
2168 return 0;
2169 }
2170
2171 static const struct scsi_host_template mvumi_template = {
2172
2173 .module = THIS_MODULE,
2174 .name = "Marvell Storage Controller",
2175 .slave_configure = mvumi_slave_configure,
2176 .queuecommand = mvumi_queue_command,
2177 .eh_timed_out = mvumi_timed_out,
2178 .eh_host_reset_handler = mvumi_host_reset,
2179 .bios_param = mvumi_bios_param,
2180 .dma_boundary = PAGE_SIZE - 1,
2181 .this_id = -1,
2182 .cmd_size = sizeof(struct mvumi_cmd_priv),
2183 };
2184
2185 static int mvumi_cfg_hw_reg(struct mvumi_hba *mhba)
2186 {
2187 void *base = NULL;
2188 struct mvumi_hw_regs *regs;
2189
2190 switch (mhba->pdev->device) {
2191 case PCI_DEVICE_ID_MARVELL_MV9143:
2192 mhba->mmio = mhba->base_addr[0];
2193 base = mhba->mmio;
2194 if (!mhba->regs) {
2195 mhba->regs = kzalloc(sizeof(*regs), GFP_KERNEL);
2196 if (mhba->regs == NULL)
2197 return -ENOMEM;
2198 }
2199 regs = mhba->regs;
2200
2201 /* For Arm */
2202 regs->ctrl_sts_reg = base + 0x20104;
2203 regs->rstoutn_mask_reg = base + 0x20108;
2204 regs->sys_soft_rst_reg = base + 0x2010C;
2205 regs->main_int_cause_reg = base + 0x20200;
2206 regs->enpointa_mask_reg = base + 0x2020C;
2207 regs->rstoutn_en_reg = base + 0xF1400;
2208 /* For Doorbell */
2209 regs->pciea_to_arm_drbl_reg = base + 0x20400;
2210 regs->arm_to_pciea_drbl_reg = base + 0x20408;
2211 regs->arm_to_pciea_mask_reg = base + 0x2040C;
2212 regs->pciea_to_arm_msg0 = base + 0x20430;
2213 regs->pciea_to_arm_msg1 = base + 0x20434;
2214 regs->arm_to_pciea_msg0 = base + 0x20438;
2215 regs->arm_to_pciea_msg1 = base + 0x2043C;
2216
2217 /* For Message Unit */
2218
2219 regs->inb_aval_count_basel = base + 0x508;
2220 regs->inb_aval_count_baseh = base + 0x50C;
2221 regs->inb_write_pointer = base + 0x518;
2222 regs->inb_read_pointer = base + 0x51C;
2223 regs->outb_coal_cfg = base + 0x568;
2224 regs->outb_copy_basel = base + 0x5B0;
2225 regs->outb_copy_baseh = base + 0x5B4;
2226 regs->outb_copy_pointer = base + 0x544;
2227 regs->outb_read_pointer = base + 0x548;
2228 regs->outb_isr_cause = base + 0x560;
2229 regs->outb_coal_cfg = base + 0x568;
2230 /* Bit setting for HW */
2231 regs->int_comaout = 1 << 8;
2232 regs->int_comaerr = 1 << 6;
2233 regs->int_dl_cpu2pciea = 1 << 1;
2234 regs->cl_pointer_toggle = 1 << 12;
2235 regs->clic_irq = 1 << 1;
2236 regs->clic_in_err = 1 << 8;
2237 regs->clic_out_err = 1 << 12;
2238 regs->cl_slot_num_mask = 0xFFF;
2239 regs->int_drbl_int_mask = 0x3FFFFFFF;
2240 regs->int_mu = regs->int_dl_cpu2pciea | regs->int_comaout |
2241 regs->int_comaerr;
2242 break;
2243 case PCI_DEVICE_ID_MARVELL_MV9580:
2244 mhba->mmio = mhba->base_addr[2];
2245 base = mhba->mmio;
2246 if (!mhba->regs) {
2247 mhba->regs = kzalloc(sizeof(*regs), GFP_KERNEL);
2248 if (mhba->regs == NULL)
2249 return -ENOMEM;
2250 }
2251 regs = mhba->regs;
2252 /* For Arm */
2253 regs->ctrl_sts_reg = base + 0x20104;
2254 regs->rstoutn_mask_reg = base + 0x1010C;
2255 regs->sys_soft_rst_reg = base + 0x10108;
2256 regs->main_int_cause_reg = base + 0x10200;
2257 regs->enpointa_mask_reg = base + 0x1020C;
2258 regs->rstoutn_en_reg = base + 0xF1400;
2259
2260 /* For Doorbell */
2261 regs->pciea_to_arm_drbl_reg = base + 0x10460;
2262 regs->arm_to_pciea_drbl_reg = base + 0x10480;
2263 regs->arm_to_pciea_mask_reg = base + 0x10484;
2264 regs->pciea_to_arm_msg0 = base + 0x10400;
2265 regs->pciea_to_arm_msg1 = base + 0x10404;
2266 regs->arm_to_pciea_msg0 = base + 0x10420;
2267 regs->arm_to_pciea_msg1 = base + 0x10424;
2268
2269 /* For reset*/
2270 regs->reset_request = base + 0x10108;
2271 regs->reset_enable = base + 0x1010c;
2272
2273 /* For Message Unit */
2274 regs->inb_aval_count_basel = base + 0x4008;
2275 regs->inb_aval_count_baseh = base + 0x400C;
2276 regs->inb_write_pointer = base + 0x4018;
2277 regs->inb_read_pointer = base + 0x401C;
2278 regs->outb_copy_basel = base + 0x4058;
2279 regs->outb_copy_baseh = base + 0x405C;
2280 regs->outb_copy_pointer = base + 0x406C;
2281 regs->outb_read_pointer = base + 0x4070;
2282 regs->outb_coal_cfg = base + 0x4080;
2283 regs->outb_isr_cause = base + 0x4088;
2284 /* Bit setting for HW */
2285 regs->int_comaout = 1 << 4;
2286 regs->int_dl_cpu2pciea = 1 << 12;
2287 regs->int_comaerr = 1 << 29;
2288 regs->cl_pointer_toggle = 1 << 14;
2289 regs->cl_slot_num_mask = 0x3FFF;
2290 regs->clic_irq = 1 << 0;
2291 regs->clic_out_err = 1 << 1;
2292 regs->int_drbl_int_mask = 0x3FFFFFFF;
2293 regs->int_mu = regs->int_dl_cpu2pciea | regs->int_comaout;
2294 break;
2295 default:
2296 return -1;
2297 }
2298
2299 return 0;
2300 }
2301
2302 /**
2303 * mvumi_init_fw - Initializes the FW
2304 * @mhba: Adapter soft state
2305 *
2306 * This is the main function for initializing firmware.
2307 */
2308 static int mvumi_init_fw(struct mvumi_hba *mhba)
2309 {
2310 int ret = 0;
2311
2312 if (pci_request_regions(mhba->pdev, MV_DRIVER_NAME)) {
2313 dev_err(&mhba->pdev->dev, "IO memory region busy!\n");
2314 return -EBUSY;
2315 }
2316 ret = mvumi_map_pci_addr(mhba->pdev, mhba->base_addr);
2317 if (ret)
2318 goto fail_ioremap;
2319
2320 switch (mhba->pdev->device) {
2321 case PCI_DEVICE_ID_MARVELL_MV9143:
2322 mhba->instancet = &mvumi_instance_9143;
2323 mhba->io_seq = 0;
2324 mhba->max_sge = MVUMI_MAX_SG_ENTRY;
2325 mhba->request_id_enabled = 1;
2326 break;
2327 case PCI_DEVICE_ID_MARVELL_MV9580:
2328 mhba->instancet = &mvumi_instance_9580;
2329 mhba->io_seq = 0;
2330 mhba->max_sge = MVUMI_MAX_SG_ENTRY;
2331 break;
2332 default:
2333 dev_err(&mhba->pdev->dev, "device 0x%x not supported!\n",
2334 mhba->pdev->device);
2335 mhba->instancet = NULL;
2336 ret = -EINVAL;
2337 goto fail_alloc_mem;
2338 }
2339 dev_dbg(&mhba->pdev->dev, "device id : %04X is found.\n",
2340 mhba->pdev->device);
2341 ret = mvumi_cfg_hw_reg(mhba);
2342 if (ret) {
2343 dev_err(&mhba->pdev->dev,
2344 "failed to allocate memory for reg\n");
2345 ret = -ENOMEM;
2346 goto fail_alloc_mem;
2347 }
2348 mhba->handshake_page = dma_alloc_coherent(&mhba->pdev->dev,
2349 HSP_MAX_SIZE, &mhba->handshake_page_phys, GFP_KERNEL);
2350 if (!mhba->handshake_page) {
2351 dev_err(&mhba->pdev->dev,
2352 "failed to allocate memory for handshake\n");
2353 ret = -ENOMEM;
2354 goto fail_alloc_page;
2355 }
2356
2357 if (mvumi_start(mhba)) {
2358 ret = -EINVAL;
2359 goto fail_ready_state;
2360 }
2361 ret = mvumi_alloc_cmds(mhba);
2362 if (ret)
2363 goto fail_ready_state;
2364
2365 return 0;
2366
2367 fail_ready_state:
2368 mvumi_release_mem_resource(mhba);
2369 dma_free_coherent(&mhba->pdev->dev, HSP_MAX_SIZE,
2370 mhba->handshake_page, mhba->handshake_page_phys);
2371 fail_alloc_page:
2372 kfree(mhba->regs);
2373 fail_alloc_mem:
2374 mvumi_unmap_pci_addr(mhba->pdev, mhba->base_addr);
2375 fail_ioremap:
2376 pci_release_regions(mhba->pdev);
2377
2378 return ret;
2379 }
2380
2381 /**
2382 * mvumi_io_attach - Attaches this driver to SCSI mid-layer
2383 * @mhba: Adapter soft state
2384 */
2385 static int mvumi_io_attach(struct mvumi_hba *mhba)
2386 {
2387 struct Scsi_Host *host = mhba->shost;
2388 struct scsi_device *sdev = NULL;
2389 int ret;
2390 unsigned int max_sg = (mhba->ib_max_size -
2391 sizeof(struct mvumi_msg_frame)) / sizeof(struct mvumi_sgl);
2392
2393 host->irq = mhba->pdev->irq;
2394 host->unique_id = mhba->unique_id;
2395 host->can_queue = (mhba->max_io - 1) ? (mhba->max_io - 1) : 1;
2396 host->sg_tablesize = mhba->max_sge > max_sg ? max_sg : mhba->max_sge;
2397 host->max_sectors = mhba->max_transfer_size / 512;
2398 host->cmd_per_lun = (mhba->max_io - 1) ? (mhba->max_io - 1) : 1;
2399 host->max_id = mhba->max_target_id;
2400 host->max_cmd_len = MAX_COMMAND_SIZE;
2401
2402 ret = scsi_add_host(host, &mhba->pdev->dev);
2403 if (ret) {
2404 dev_err(&mhba->pdev->dev, "scsi_add_host failed\n");
2405 return ret;
2406 }
2407 mhba->fw_flag |= MVUMI_FW_ATTACH;
2408
2409 mutex_lock(&mhba->sas_discovery_mutex);
2410 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
2411 ret = scsi_add_device(host, 0, mhba->max_target_id - 1, 0);
2412 else
2413 ret = 0;
2414 if (ret) {
2415 dev_err(&mhba->pdev->dev, "add virtual device failed\n");
2416 mutex_unlock(&mhba->sas_discovery_mutex);
2417 goto fail_add_device;
2418 }
2419
2420 mhba->dm_thread = kthread_create(mvumi_rescan_bus,
2421 mhba, "mvumi_scanthread");
2422 if (IS_ERR(mhba->dm_thread)) {
2423 dev_err(&mhba->pdev->dev,
2424 "failed to create device scan thread\n");
2425 ret = PTR_ERR(mhba->dm_thread);
2426 mutex_unlock(&mhba->sas_discovery_mutex);
2427 goto fail_create_thread;
2428 }
2429 atomic_set(&mhba->pnp_count, 1);
2430 wake_up_process(mhba->dm_thread);
2431
2432 mutex_unlock(&mhba->sas_discovery_mutex);
2433 return 0;
2434
2435 fail_create_thread:
2436 if (mhba->pdev->device == PCI_DEVICE_ID_MARVELL_MV9580)
2437 sdev = scsi_device_lookup(mhba->shost, 0,
2438 mhba->max_target_id - 1, 0);
2439 if (sdev) {
2440 scsi_remove_device(sdev);
2441 scsi_device_put(sdev);
2442 }
2443 fail_add_device:
2444 scsi_remove_host(mhba->shost);
2445 return ret;
2446 }
2447
2448 /**
2449 * mvumi_probe_one - PCI hotplug entry point
2450 * @pdev: PCI device structure
2451 * @id: PCI ids of supported hotplugged adapter
2452 */
2453 static int mvumi_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2454 {
2455 struct Scsi_Host *host;
2456 struct mvumi_hba *mhba;
2457 int ret;
2458
2459 dev_dbg(&pdev->dev, " %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
2460 pdev->vendor, pdev->device, pdev->subsystem_vendor,
2461 pdev->subsystem_device);
2462
2463 ret = pci_enable_device(pdev);
2464 if (ret)
2465 return ret;
2466
2467 ret = mvumi_pci_set_master(pdev);
2468 if (ret)
2469 goto fail_set_dma_mask;
2470
2471 host = scsi_host_alloc(&mvumi_template, sizeof(*mhba));
2472 if (!host) {
2473 dev_err(&pdev->dev, "scsi_host_alloc failed\n");
2474 ret = -ENOMEM;
2475 goto fail_alloc_instance;
2476 }
2477 mhba = shost_priv(host);
2478
2479 INIT_LIST_HEAD(&mhba->cmd_pool);
2480 INIT_LIST_HEAD(&mhba->ob_data_list);
2481 INIT_LIST_HEAD(&mhba->free_ob_list);
2482 INIT_LIST_HEAD(&mhba->res_list);
2483 INIT_LIST_HEAD(&mhba->waiting_req_list);
2484 mutex_init(&mhba->device_lock);
2485 INIT_LIST_HEAD(&mhba->mhba_dev_list);
2486 INIT_LIST_HEAD(&mhba->shost_dev_list);
2487 atomic_set(&mhba->fw_outstanding, 0);
2488 init_waitqueue_head(&mhba->int_cmd_wait_q);
2489 mutex_init(&mhba->sas_discovery_mutex);
2490
2491 mhba->pdev = pdev;
2492 mhba->shost = host;
2493 mhba->unique_id = pci_dev_id(pdev);
2494
2495 ret = mvumi_init_fw(mhba);
2496 if (ret)
2497 goto fail_init_fw;
2498
2499 ret = request_irq(mhba->pdev->irq, mvumi_isr_handler, IRQF_SHARED,
2500 "mvumi", mhba);
2501 if (ret) {
2502 dev_err(&pdev->dev, "failed to register IRQ\n");
2503 goto fail_init_irq;
2504 }
2505
2506 mhba->instancet->enable_intr(mhba);
2507 pci_set_drvdata(pdev, mhba);
2508
2509 ret = mvumi_io_attach(mhba);
2510 if (ret)
2511 goto fail_io_attach;
2512
2513 mvumi_backup_bar_addr(mhba);
2514 dev_dbg(&pdev->dev, "probe mvumi driver successfully.\n");
2515
2516 return 0;
2517
2518 fail_io_attach:
2519 mhba->instancet->disable_intr(mhba);
2520 free_irq(mhba->pdev->irq, mhba);
2521 fail_init_irq:
2522 mvumi_release_fw(mhba);
2523 fail_init_fw:
2524 scsi_host_put(host);
2525
2526 fail_alloc_instance:
2527 fail_set_dma_mask:
2528 pci_disable_device(pdev);
2529
2530 return ret;
2531 }
2532
2533 static void mvumi_detach_one(struct pci_dev *pdev)
2534 {
2535 struct Scsi_Host *host;
2536 struct mvumi_hba *mhba;
2537
2538 mhba = pci_get_drvdata(pdev);
2539 if (mhba->dm_thread) {
2540 kthread_stop(mhba->dm_thread);
2541 mhba->dm_thread = NULL;
2542 }
2543
2544 mvumi_detach_devices(mhba);
2545 host = mhba->shost;
2546 scsi_remove_host(mhba->shost);
2547 mvumi_flush_cache(mhba);
2548
2549 mhba->instancet->disable_intr(mhba);
2550 free_irq(mhba->pdev->irq, mhba);
2551 mvumi_release_fw(mhba);
2552 scsi_host_put(host);
2553 pci_disable_device(pdev);
2554 dev_dbg(&pdev->dev, "driver is removed!\n");
2555 }
2556
2557 /**
2558 * mvumi_shutdown - Shutdown entry point
2559 * @pdev: PCI device structure
2560 */
2561 static void mvumi_shutdown(struct pci_dev *pdev)
2562 {
2563 struct mvumi_hba *mhba = pci_get_drvdata(pdev);
2564
2565 mvumi_flush_cache(mhba);
2566 }
2567
2568 static int __maybe_unused mvumi_suspend(struct device *dev)
2569 {
2570 struct pci_dev *pdev = to_pci_dev(dev);
2571 struct mvumi_hba *mhba = pci_get_drvdata(pdev);
2572
2573 mvumi_flush_cache(mhba);
2574
2575 mhba->instancet->disable_intr(mhba);
2576 mvumi_unmap_pci_addr(pdev, mhba->base_addr);
2577
2578 return 0;
2579 }
2580
2581 static int __maybe_unused mvumi_resume(struct device *dev)
2582 {
2583 int ret;
2584 struct pci_dev *pdev = to_pci_dev(dev);
2585 struct mvumi_hba *mhba = pci_get_drvdata(pdev);
2586
2587 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
2588 if (ret)
2589 goto fail;
2590 ret = mvumi_map_pci_addr(mhba->pdev, mhba->base_addr);
2591 if (ret)
2592 goto release_regions;
2593
2594 if (mvumi_cfg_hw_reg(mhba)) {
2595 ret = -EINVAL;
2596 goto unmap_pci_addr;
2597 }
2598
2599 mhba->mmio = mhba->base_addr[0];
2600 mvumi_reset(mhba);
2601
2602 if (mvumi_start(mhba)) {
2603 ret = -EINVAL;
2604 goto unmap_pci_addr;
2605 }
2606
2607 mhba->instancet->enable_intr(mhba);
2608
2609 return 0;
2610
2611 unmap_pci_addr:
2612 mvumi_unmap_pci_addr(pdev, mhba->base_addr);
2613 release_regions:
2614 pci_release_regions(pdev);
2615 fail:
2616
2617 return ret;
2618 }
2619
2620 static SIMPLE_DEV_PM_OPS(mvumi_pm_ops, mvumi_suspend, mvumi_resume);
2621
2622 static struct pci_driver mvumi_pci_driver = {
2623
2624 .name = MV_DRIVER_NAME,
2625 .id_table = mvumi_pci_table,
2626 .probe = mvumi_probe_one,
2627 .remove = mvumi_detach_one,
2628 .shutdown = mvumi_shutdown,
2629 .driver.pm = &mvumi_pm_ops,
2630 };
2631
2632 module_pci_driver(mvumi_pci_driver);
Kernel DRM miscellaneous fixes and cross-tree changes