Commit | Line | Data |
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5f37396d | 1 | // SPDX-License-Identifier: GPL-2.0 |
b60503ba MW |
2 | /* |
3 | * NVM Express device driver | |
6eb0d698 | 4 | * Copyright (c) 2011-2014, Intel Corporation. |
b60503ba MW |
5 | */ |
6 | ||
df4f9bc4 | 7 | #include <linux/acpi.h> |
a0a3408e | 8 | #include <linux/aer.h> |
18119775 | 9 | #include <linux/async.h> |
b60503ba | 10 | #include <linux/blkdev.h> |
a4aea562 | 11 | #include <linux/blk-mq.h> |
dca51e78 | 12 | #include <linux/blk-mq-pci.h> |
fe45e630 | 13 | #include <linux/blk-integrity.h> |
ff5350a8 | 14 | #include <linux/dmi.h> |
b60503ba MW |
15 | #include <linux/init.h> |
16 | #include <linux/interrupt.h> | |
17 | #include <linux/io.h> | |
99722c8a | 18 | #include <linux/kstrtox.h> |
dc90f084 | 19 | #include <linux/memremap.h> |
b60503ba MW |
20 | #include <linux/mm.h> |
21 | #include <linux/module.h> | |
77bf25ea | 22 | #include <linux/mutex.h> |
d0877473 | 23 | #include <linux/once.h> |
b60503ba | 24 | #include <linux/pci.h> |
d916b1be | 25 | #include <linux/suspend.h> |
e1e5e564 | 26 | #include <linux/t10-pi.h> |
b60503ba | 27 | #include <linux/types.h> |
2f8e2c87 | 28 | #include <linux/io-64-nonatomic-lo-hi.h> |
20d3bb92 | 29 | #include <linux/io-64-nonatomic-hi-lo.h> |
a98e58e5 | 30 | #include <linux/sed-opal.h> |
0f238ff5 | 31 | #include <linux/pci-p2pdma.h> |
797a796a | 32 | |
604c01d5 | 33 | #include "trace.h" |
f11bb3e2 CH |
34 | #include "nvme.h" |
35 | ||
c1e0cc7e | 36 | #define SQ_SIZE(q) ((q)->q_depth << (q)->sqes) |
8a1d09a6 | 37 | #define CQ_SIZE(q) ((q)->q_depth * sizeof(struct nvme_completion)) |
c965809c | 38 | |
a7a7cbe3 | 39 | #define SGES_PER_PAGE (PAGE_SIZE / sizeof(struct nvme_sgl_desc)) |
9d43cf64 | 40 | |
943e942e JA |
41 | /* |
42 | * These can be higher, but we need to ensure that any command doesn't | |
43 | * require an sg allocation that needs more than a page of data. | |
44 | */ | |
45 | #define NVME_MAX_KB_SZ 4096 | |
46 | #define NVME_MAX_SEGS 127 | |
47 | ||
58ffacb5 | 48 | static int use_threaded_interrupts; |
2e21e445 | 49 | module_param(use_threaded_interrupts, int, 0444); |
58ffacb5 | 50 | |
8ffaadf7 | 51 | static bool use_cmb_sqes = true; |
69f4eb9f | 52 | module_param(use_cmb_sqes, bool, 0444); |
8ffaadf7 JD |
53 | MODULE_PARM_DESC(use_cmb_sqes, "use controller's memory buffer for I/O SQes"); |
54 | ||
87ad72a5 CH |
55 | static unsigned int max_host_mem_size_mb = 128; |
56 | module_param(max_host_mem_size_mb, uint, 0444); | |
57 | MODULE_PARM_DESC(max_host_mem_size_mb, | |
58 | "Maximum Host Memory Buffer (HMB) size per controller (in MiB)"); | |
1fa6aead | 59 | |
a7a7cbe3 CK |
60 | static unsigned int sgl_threshold = SZ_32K; |
61 | module_param(sgl_threshold, uint, 0644); | |
62 | MODULE_PARM_DESC(sgl_threshold, | |
63 | "Use SGLs when average request segment size is larger or equal to " | |
64 | "this size. Use 0 to disable SGLs."); | |
65 | ||
27453b45 SG |
66 | #define NVME_PCI_MIN_QUEUE_SIZE 2 |
67 | #define NVME_PCI_MAX_QUEUE_SIZE 4095 | |
b27c1e68 | 68 | static int io_queue_depth_set(const char *val, const struct kernel_param *kp); |
69 | static const struct kernel_param_ops io_queue_depth_ops = { | |
70 | .set = io_queue_depth_set, | |
61f3b896 | 71 | .get = param_get_uint, |
b27c1e68 | 72 | }; |
73 | ||
61f3b896 | 74 | static unsigned int io_queue_depth = 1024; |
b27c1e68 | 75 | module_param_cb(io_queue_depth, &io_queue_depth_ops, &io_queue_depth, 0644); |
27453b45 | 76 | MODULE_PARM_DESC(io_queue_depth, "set io queue depth, should >= 2 and < 4096"); |
b27c1e68 | 77 | |
9c9e76d5 WZ |
78 | static int io_queue_count_set(const char *val, const struct kernel_param *kp) |
79 | { | |
80 | unsigned int n; | |
81 | int ret; | |
82 | ||
83 | ret = kstrtouint(val, 10, &n); | |
84 | if (ret != 0 || n > num_possible_cpus()) | |
85 | return -EINVAL; | |
86 | return param_set_uint(val, kp); | |
87 | } | |
88 | ||
89 | static const struct kernel_param_ops io_queue_count_ops = { | |
90 | .set = io_queue_count_set, | |
91 | .get = param_get_uint, | |
92 | }; | |
93 | ||
3f68baf7 | 94 | static unsigned int write_queues; |
9c9e76d5 | 95 | module_param_cb(write_queues, &io_queue_count_ops, &write_queues, 0644); |
3b6592f7 JA |
96 | MODULE_PARM_DESC(write_queues, |
97 | "Number of queues to use for writes. If not set, reads and writes " | |
98 | "will share a queue set."); | |
99 | ||
3f68baf7 | 100 | static unsigned int poll_queues; |
9c9e76d5 | 101 | module_param_cb(poll_queues, &io_queue_count_ops, &poll_queues, 0644); |
4b04cc6a JA |
102 | MODULE_PARM_DESC(poll_queues, "Number of queues to use for polled IO."); |
103 | ||
df4f9bc4 DB |
104 | static bool noacpi; |
105 | module_param(noacpi, bool, 0444); | |
106 | MODULE_PARM_DESC(noacpi, "disable acpi bios quirks"); | |
107 | ||
1c63dc66 CH |
108 | struct nvme_dev; |
109 | struct nvme_queue; | |
b3fffdef | 110 | |
a5cdb68c | 111 | static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown); |
8fae268b | 112 | static bool __nvme_disable_io_queues(struct nvme_dev *dev, u8 opcode); |
d4b4ff8e | 113 | |
1c63dc66 CH |
114 | /* |
115 | * Represents an NVM Express device. Each nvme_dev is a PCI function. | |
116 | */ | |
117 | struct nvme_dev { | |
147b27e4 | 118 | struct nvme_queue *queues; |
1c63dc66 CH |
119 | struct blk_mq_tag_set tagset; |
120 | struct blk_mq_tag_set admin_tagset; | |
121 | u32 __iomem *dbs; | |
122 | struct device *dev; | |
123 | struct dma_pool *prp_page_pool; | |
124 | struct dma_pool *prp_small_pool; | |
1c63dc66 CH |
125 | unsigned online_queues; |
126 | unsigned max_qid; | |
e20ba6e1 | 127 | unsigned io_queues[HCTX_MAX_TYPES]; |
22b55601 | 128 | unsigned int num_vecs; |
7442ddce | 129 | u32 q_depth; |
c1e0cc7e | 130 | int io_sqes; |
1c63dc66 | 131 | u32 db_stride; |
1c63dc66 | 132 | void __iomem *bar; |
97f6ef64 | 133 | unsigned long bar_mapped_size; |
77bf25ea | 134 | struct mutex shutdown_lock; |
1c63dc66 | 135 | bool subsystem; |
1c63dc66 | 136 | u64 cmb_size; |
0f238ff5 | 137 | bool cmb_use_sqes; |
1c63dc66 | 138 | u32 cmbsz; |
202021c1 | 139 | u32 cmbloc; |
1c63dc66 | 140 | struct nvme_ctrl ctrl; |
d916b1be | 141 | u32 last_ps; |
a5df5e79 | 142 | bool hmb; |
87ad72a5 | 143 | |
943e942e JA |
144 | mempool_t *iod_mempool; |
145 | ||
87ad72a5 | 146 | /* shadow doorbell buffer support: */ |
f9f38e33 HK |
147 | u32 *dbbuf_dbs; |
148 | dma_addr_t dbbuf_dbs_dma_addr; | |
149 | u32 *dbbuf_eis; | |
150 | dma_addr_t dbbuf_eis_dma_addr; | |
87ad72a5 CH |
151 | |
152 | /* host memory buffer support: */ | |
153 | u64 host_mem_size; | |
154 | u32 nr_host_mem_descs; | |
4033f35d | 155 | dma_addr_t host_mem_descs_dma; |
87ad72a5 CH |
156 | struct nvme_host_mem_buf_desc *host_mem_descs; |
157 | void **host_mem_desc_bufs; | |
2a5bcfdd WZ |
158 | unsigned int nr_allocated_queues; |
159 | unsigned int nr_write_queues; | |
160 | unsigned int nr_poll_queues; | |
4d115420 | 161 | }; |
1fa6aead | 162 | |
b27c1e68 | 163 | static int io_queue_depth_set(const char *val, const struct kernel_param *kp) |
164 | { | |
27453b45 SG |
165 | return param_set_uint_minmax(val, kp, NVME_PCI_MIN_QUEUE_SIZE, |
166 | NVME_PCI_MAX_QUEUE_SIZE); | |
b27c1e68 | 167 | } |
168 | ||
f9f38e33 HK |
169 | static inline unsigned int sq_idx(unsigned int qid, u32 stride) |
170 | { | |
171 | return qid * 2 * stride; | |
172 | } | |
173 | ||
174 | static inline unsigned int cq_idx(unsigned int qid, u32 stride) | |
175 | { | |
176 | return (qid * 2 + 1) * stride; | |
177 | } | |
178 | ||
1c63dc66 CH |
179 | static inline struct nvme_dev *to_nvme_dev(struct nvme_ctrl *ctrl) |
180 | { | |
181 | return container_of(ctrl, struct nvme_dev, ctrl); | |
182 | } | |
183 | ||
b60503ba MW |
184 | /* |
185 | * An NVM Express queue. Each device has at least two (one for admin | |
186 | * commands and one for I/O commands). | |
187 | */ | |
188 | struct nvme_queue { | |
091b6092 | 189 | struct nvme_dev *dev; |
1ab0cd69 | 190 | spinlock_t sq_lock; |
c1e0cc7e | 191 | void *sq_cmds; |
3a7afd8e CH |
192 | /* only used for poll queues: */ |
193 | spinlock_t cq_poll_lock ____cacheline_aligned_in_smp; | |
74943d45 | 194 | struct nvme_completion *cqes; |
b60503ba MW |
195 | dma_addr_t sq_dma_addr; |
196 | dma_addr_t cq_dma_addr; | |
b60503ba | 197 | u32 __iomem *q_db; |
7442ddce | 198 | u32 q_depth; |
7c349dde | 199 | u16 cq_vector; |
b60503ba | 200 | u16 sq_tail; |
38210800 | 201 | u16 last_sq_tail; |
b60503ba | 202 | u16 cq_head; |
c30341dc | 203 | u16 qid; |
e9539f47 | 204 | u8 cq_phase; |
c1e0cc7e | 205 | u8 sqes; |
4e224106 CH |
206 | unsigned long flags; |
207 | #define NVMEQ_ENABLED 0 | |
63223078 | 208 | #define NVMEQ_SQ_CMB 1 |
d1ed6aa1 | 209 | #define NVMEQ_DELETE_ERROR 2 |
7c349dde | 210 | #define NVMEQ_POLLED 3 |
f9f38e33 HK |
211 | u32 *dbbuf_sq_db; |
212 | u32 *dbbuf_cq_db; | |
213 | u32 *dbbuf_sq_ei; | |
214 | u32 *dbbuf_cq_ei; | |
d1ed6aa1 | 215 | struct completion delete_done; |
b60503ba MW |
216 | }; |
217 | ||
71bd150c | 218 | /* |
9b048119 CH |
219 | * The nvme_iod describes the data in an I/O. |
220 | * | |
221 | * The sg pointer contains the list of PRP/SGL chunk allocations in addition | |
222 | * to the actual struct scatterlist. | |
71bd150c CH |
223 | */ |
224 | struct nvme_iod { | |
d49187e9 | 225 | struct nvme_request req; |
af7fae85 | 226 | struct nvme_command cmd; |
a7a7cbe3 | 227 | bool use_sgl; |
52da4f3f | 228 | bool aborted; |
c372cdd1 KB |
229 | s8 nr_allocations; /* PRP list pool allocations. 0 means small |
230 | pool in use */ | |
dff824b2 | 231 | unsigned int dma_len; /* length of single DMA segment mapping */ |
c4c22c52 | 232 | dma_addr_t first_dma; |
783b94bd | 233 | dma_addr_t meta_dma; |
91fb2b60 | 234 | struct sg_table sgt; |
b60503ba MW |
235 | }; |
236 | ||
2a5bcfdd | 237 | static inline unsigned int nvme_dbbuf_size(struct nvme_dev *dev) |
3b6592f7 | 238 | { |
2a5bcfdd | 239 | return dev->nr_allocated_queues * 8 * dev->db_stride; |
f9f38e33 HK |
240 | } |
241 | ||
65a54646 | 242 | static void nvme_dbbuf_dma_alloc(struct nvme_dev *dev) |
f9f38e33 | 243 | { |
2a5bcfdd | 244 | unsigned int mem_size = nvme_dbbuf_size(dev); |
f9f38e33 | 245 | |
65a54646 CH |
246 | if (!(dev->ctrl.oacs & NVME_CTRL_OACS_DBBUF_SUPP)) |
247 | return; | |
248 | ||
58847f12 KB |
249 | if (dev->dbbuf_dbs) { |
250 | /* | |
251 | * Clear the dbbuf memory so the driver doesn't observe stale | |
252 | * values from the previous instantiation. | |
253 | */ | |
254 | memset(dev->dbbuf_dbs, 0, mem_size); | |
255 | memset(dev->dbbuf_eis, 0, mem_size); | |
65a54646 | 256 | return; |
58847f12 | 257 | } |
f9f38e33 HK |
258 | |
259 | dev->dbbuf_dbs = dma_alloc_coherent(dev->dev, mem_size, | |
260 | &dev->dbbuf_dbs_dma_addr, | |
261 | GFP_KERNEL); | |
262 | if (!dev->dbbuf_dbs) | |
65a54646 | 263 | goto fail; |
f9f38e33 HK |
264 | dev->dbbuf_eis = dma_alloc_coherent(dev->dev, mem_size, |
265 | &dev->dbbuf_eis_dma_addr, | |
266 | GFP_KERNEL); | |
65a54646 CH |
267 | if (!dev->dbbuf_eis) |
268 | goto fail_free_dbbuf_dbs; | |
269 | return; | |
f9f38e33 | 270 | |
65a54646 CH |
271 | fail_free_dbbuf_dbs: |
272 | dma_free_coherent(dev->dev, mem_size, dev->dbbuf_dbs, | |
273 | dev->dbbuf_dbs_dma_addr); | |
274 | dev->dbbuf_dbs = NULL; | |
275 | fail: | |
276 | dev_warn(dev->dev, "unable to allocate dma for dbbuf\n"); | |
f9f38e33 HK |
277 | } |
278 | ||
279 | static void nvme_dbbuf_dma_free(struct nvme_dev *dev) | |
280 | { | |
2a5bcfdd | 281 | unsigned int mem_size = nvme_dbbuf_size(dev); |
f9f38e33 HK |
282 | |
283 | if (dev->dbbuf_dbs) { | |
284 | dma_free_coherent(dev->dev, mem_size, | |
285 | dev->dbbuf_dbs, dev->dbbuf_dbs_dma_addr); | |
286 | dev->dbbuf_dbs = NULL; | |
287 | } | |
288 | if (dev->dbbuf_eis) { | |
289 | dma_free_coherent(dev->dev, mem_size, | |
290 | dev->dbbuf_eis, dev->dbbuf_eis_dma_addr); | |
291 | dev->dbbuf_eis = NULL; | |
292 | } | |
293 | } | |
294 | ||
295 | static void nvme_dbbuf_init(struct nvme_dev *dev, | |
296 | struct nvme_queue *nvmeq, int qid) | |
297 | { | |
298 | if (!dev->dbbuf_dbs || !qid) | |
299 | return; | |
300 | ||
301 | nvmeq->dbbuf_sq_db = &dev->dbbuf_dbs[sq_idx(qid, dev->db_stride)]; | |
302 | nvmeq->dbbuf_cq_db = &dev->dbbuf_dbs[cq_idx(qid, dev->db_stride)]; | |
303 | nvmeq->dbbuf_sq_ei = &dev->dbbuf_eis[sq_idx(qid, dev->db_stride)]; | |
304 | nvmeq->dbbuf_cq_ei = &dev->dbbuf_eis[cq_idx(qid, dev->db_stride)]; | |
305 | } | |
306 | ||
0f0d2c87 MI |
307 | static void nvme_dbbuf_free(struct nvme_queue *nvmeq) |
308 | { | |
309 | if (!nvmeq->qid) | |
310 | return; | |
311 | ||
312 | nvmeq->dbbuf_sq_db = NULL; | |
313 | nvmeq->dbbuf_cq_db = NULL; | |
314 | nvmeq->dbbuf_sq_ei = NULL; | |
315 | nvmeq->dbbuf_cq_ei = NULL; | |
316 | } | |
317 | ||
f9f38e33 HK |
318 | static void nvme_dbbuf_set(struct nvme_dev *dev) |
319 | { | |
f66e2804 | 320 | struct nvme_command c = { }; |
0f0d2c87 | 321 | unsigned int i; |
f9f38e33 HK |
322 | |
323 | if (!dev->dbbuf_dbs) | |
324 | return; | |
325 | ||
f9f38e33 HK |
326 | c.dbbuf.opcode = nvme_admin_dbbuf; |
327 | c.dbbuf.prp1 = cpu_to_le64(dev->dbbuf_dbs_dma_addr); | |
328 | c.dbbuf.prp2 = cpu_to_le64(dev->dbbuf_eis_dma_addr); | |
329 | ||
330 | if (nvme_submit_sync_cmd(dev->ctrl.admin_q, &c, NULL, 0)) { | |
9bdcfb10 | 331 | dev_warn(dev->ctrl.device, "unable to set dbbuf\n"); |
f9f38e33 HK |
332 | /* Free memory and continue on */ |
333 | nvme_dbbuf_dma_free(dev); | |
0f0d2c87 MI |
334 | |
335 | for (i = 1; i <= dev->online_queues; i++) | |
336 | nvme_dbbuf_free(&dev->queues[i]); | |
f9f38e33 HK |
337 | } |
338 | } | |
339 | ||
340 | static inline int nvme_dbbuf_need_event(u16 event_idx, u16 new_idx, u16 old) | |
341 | { | |
342 | return (u16)(new_idx - event_idx - 1) < (u16)(new_idx - old); | |
343 | } | |
344 | ||
345 | /* Update dbbuf and return true if an MMIO is required */ | |
346 | static bool nvme_dbbuf_update_and_check_event(u16 value, u32 *dbbuf_db, | |
347 | volatile u32 *dbbuf_ei) | |
348 | { | |
349 | if (dbbuf_db) { | |
350 | u16 old_value; | |
351 | ||
352 | /* | |
353 | * Ensure that the queue is written before updating | |
354 | * the doorbell in memory | |
355 | */ | |
356 | wmb(); | |
357 | ||
358 | old_value = *dbbuf_db; | |
359 | *dbbuf_db = value; | |
360 | ||
f1ed3df2 MW |
361 | /* |
362 | * Ensure that the doorbell is updated before reading the event | |
363 | * index from memory. The controller needs to provide similar | |
364 | * ordering to ensure the envent index is updated before reading | |
365 | * the doorbell. | |
366 | */ | |
367 | mb(); | |
368 | ||
f9f38e33 HK |
369 | if (!nvme_dbbuf_need_event(*dbbuf_ei, value, old_value)) |
370 | return false; | |
371 | } | |
372 | ||
373 | return true; | |
b60503ba MW |
374 | } |
375 | ||
ac3dd5bd JA |
376 | /* |
377 | * Will slightly overestimate the number of pages needed. This is OK | |
378 | * as it only leads to a small amount of wasted memory for the lifetime of | |
379 | * the I/O. | |
380 | */ | |
b13c6393 | 381 | static int nvme_pci_npages_prp(void) |
ac3dd5bd | 382 | { |
b13c6393 | 383 | unsigned nprps = DIV_ROUND_UP(NVME_MAX_KB_SZ + NVME_CTRL_PAGE_SIZE, |
6c3c05b0 | 384 | NVME_CTRL_PAGE_SIZE); |
ac3dd5bd JA |
385 | return DIV_ROUND_UP(8 * nprps, PAGE_SIZE - 8); |
386 | } | |
387 | ||
a7a7cbe3 CK |
388 | /* |
389 | * Calculates the number of pages needed for the SGL segments. For example a 4k | |
390 | * page can accommodate 256 SGL descriptors. | |
391 | */ | |
b13c6393 | 392 | static int nvme_pci_npages_sgl(void) |
ac3dd5bd | 393 | { |
b13c6393 CK |
394 | return DIV_ROUND_UP(NVME_MAX_SEGS * sizeof(struct nvme_sgl_desc), |
395 | PAGE_SIZE); | |
f4800d6d | 396 | } |
ac3dd5bd | 397 | |
a4aea562 MB |
398 | static int nvme_admin_init_hctx(struct blk_mq_hw_ctx *hctx, void *data, |
399 | unsigned int hctx_idx) | |
e85248e5 | 400 | { |
a4aea562 | 401 | struct nvme_dev *dev = data; |
147b27e4 | 402 | struct nvme_queue *nvmeq = &dev->queues[0]; |
a4aea562 | 403 | |
42483228 KB |
404 | WARN_ON(hctx_idx != 0); |
405 | WARN_ON(dev->admin_tagset.tags[0] != hctx->tags); | |
42483228 | 406 | |
a4aea562 MB |
407 | hctx->driver_data = nvmeq; |
408 | return 0; | |
e85248e5 MW |
409 | } |
410 | ||
a4aea562 MB |
411 | static int nvme_init_hctx(struct blk_mq_hw_ctx *hctx, void *data, |
412 | unsigned int hctx_idx) | |
b60503ba | 413 | { |
a4aea562 | 414 | struct nvme_dev *dev = data; |
147b27e4 | 415 | struct nvme_queue *nvmeq = &dev->queues[hctx_idx + 1]; |
a4aea562 | 416 | |
42483228 | 417 | WARN_ON(dev->tagset.tags[hctx_idx] != hctx->tags); |
a4aea562 MB |
418 | hctx->driver_data = nvmeq; |
419 | return 0; | |
b60503ba MW |
420 | } |
421 | ||
e559398f CH |
422 | static int nvme_pci_init_request(struct blk_mq_tag_set *set, |
423 | struct request *req, unsigned int hctx_idx, | |
424 | unsigned int numa_node) | |
b60503ba | 425 | { |
d6296d39 | 426 | struct nvme_dev *dev = set->driver_data; |
f4800d6d | 427 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); |
59e29ce6 SG |
428 | |
429 | nvme_req(req)->ctrl = &dev->ctrl; | |
f4b9e6c9 | 430 | nvme_req(req)->cmd = &iod->cmd; |
a4aea562 MB |
431 | return 0; |
432 | } | |
433 | ||
3b6592f7 JA |
434 | static int queue_irq_offset(struct nvme_dev *dev) |
435 | { | |
436 | /* if we have more than 1 vec, admin queue offsets us by 1 */ | |
437 | if (dev->num_vecs > 1) | |
438 | return 1; | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
a4e1d0b7 | 443 | static void nvme_pci_map_queues(struct blk_mq_tag_set *set) |
dca51e78 CH |
444 | { |
445 | struct nvme_dev *dev = set->driver_data; | |
3b6592f7 JA |
446 | int i, qoff, offset; |
447 | ||
448 | offset = queue_irq_offset(dev); | |
449 | for (i = 0, qoff = 0; i < set->nr_maps; i++) { | |
450 | struct blk_mq_queue_map *map = &set->map[i]; | |
451 | ||
452 | map->nr_queues = dev->io_queues[i]; | |
453 | if (!map->nr_queues) { | |
e20ba6e1 | 454 | BUG_ON(i == HCTX_TYPE_DEFAULT); |
7e849dd9 | 455 | continue; |
3b6592f7 JA |
456 | } |
457 | ||
4b04cc6a JA |
458 | /* |
459 | * The poll queue(s) doesn't have an IRQ (and hence IRQ | |
460 | * affinity), so use the regular blk-mq cpu mapping | |
461 | */ | |
3b6592f7 | 462 | map->queue_offset = qoff; |
cb9e0e50 | 463 | if (i != HCTX_TYPE_POLL && offset) |
4b04cc6a JA |
464 | blk_mq_pci_map_queues(map, to_pci_dev(dev->dev), offset); |
465 | else | |
466 | blk_mq_map_queues(map); | |
3b6592f7 JA |
467 | qoff += map->nr_queues; |
468 | offset += map->nr_queues; | |
469 | } | |
dca51e78 CH |
470 | } |
471 | ||
38210800 KB |
472 | /* |
473 | * Write sq tail if we are asked to, or if the next command would wrap. | |
474 | */ | |
475 | static inline void nvme_write_sq_db(struct nvme_queue *nvmeq, bool write_sq) | |
04f3eafd | 476 | { |
38210800 KB |
477 | if (!write_sq) { |
478 | u16 next_tail = nvmeq->sq_tail + 1; | |
479 | ||
480 | if (next_tail == nvmeq->q_depth) | |
481 | next_tail = 0; | |
482 | if (next_tail != nvmeq->last_sq_tail) | |
483 | return; | |
484 | } | |
485 | ||
04f3eafd JA |
486 | if (nvme_dbbuf_update_and_check_event(nvmeq->sq_tail, |
487 | nvmeq->dbbuf_sq_db, nvmeq->dbbuf_sq_ei)) | |
488 | writel(nvmeq->sq_tail, nvmeq->q_db); | |
38210800 | 489 | nvmeq->last_sq_tail = nvmeq->sq_tail; |
04f3eafd JA |
490 | } |
491 | ||
3233b94c JA |
492 | static inline void nvme_sq_copy_cmd(struct nvme_queue *nvmeq, |
493 | struct nvme_command *cmd) | |
b60503ba | 494 | { |
c1e0cc7e | 495 | memcpy(nvmeq->sq_cmds + (nvmeq->sq_tail << nvmeq->sqes), |
3233b94c | 496 | absolute_pointer(cmd), sizeof(*cmd)); |
90ea5ca4 CH |
497 | if (++nvmeq->sq_tail == nvmeq->q_depth) |
498 | nvmeq->sq_tail = 0; | |
04f3eafd JA |
499 | } |
500 | ||
501 | static void nvme_commit_rqs(struct blk_mq_hw_ctx *hctx) | |
502 | { | |
503 | struct nvme_queue *nvmeq = hctx->driver_data; | |
504 | ||
505 | spin_lock(&nvmeq->sq_lock); | |
38210800 KB |
506 | if (nvmeq->sq_tail != nvmeq->last_sq_tail) |
507 | nvme_write_sq_db(nvmeq, true); | |
90ea5ca4 | 508 | spin_unlock(&nvmeq->sq_lock); |
b60503ba MW |
509 | } |
510 | ||
a7a7cbe3 | 511 | static void **nvme_pci_iod_list(struct request *req) |
b60503ba | 512 | { |
f4800d6d | 513 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); |
91fb2b60 | 514 | return (void **)(iod->sgt.sgl + blk_rq_nr_phys_segments(req)); |
b60503ba MW |
515 | } |
516 | ||
955b1b5a MI |
517 | static inline bool nvme_pci_use_sgls(struct nvme_dev *dev, struct request *req) |
518 | { | |
a53232cb | 519 | struct nvme_queue *nvmeq = req->mq_hctx->driver_data; |
20469a37 | 520 | int nseg = blk_rq_nr_phys_segments(req); |
955b1b5a MI |
521 | unsigned int avg_seg_size; |
522 | ||
20469a37 | 523 | avg_seg_size = DIV_ROUND_UP(blk_rq_payload_bytes(req), nseg); |
955b1b5a | 524 | |
253a0b76 | 525 | if (!nvme_ctrl_sgl_supported(&dev->ctrl)) |
955b1b5a | 526 | return false; |
a53232cb | 527 | if (!nvmeq->qid) |
955b1b5a MI |
528 | return false; |
529 | if (!sgl_threshold || avg_seg_size < sgl_threshold) | |
530 | return false; | |
531 | return true; | |
532 | } | |
533 | ||
9275c206 | 534 | static void nvme_free_prps(struct nvme_dev *dev, struct request *req) |
b60503ba | 535 | { |
6c3c05b0 | 536 | const int last_prp = NVME_CTRL_PAGE_SIZE / sizeof(__le64) - 1; |
9275c206 CH |
537 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); |
538 | dma_addr_t dma_addr = iod->first_dma; | |
eca18b23 | 539 | int i; |
eca18b23 | 540 | |
c372cdd1 | 541 | for (i = 0; i < iod->nr_allocations; i++) { |
9275c206 CH |
542 | __le64 *prp_list = nvme_pci_iod_list(req)[i]; |
543 | dma_addr_t next_dma_addr = le64_to_cpu(prp_list[last_prp]); | |
544 | ||
545 | dma_pool_free(dev->prp_page_pool, prp_list, dma_addr); | |
546 | dma_addr = next_dma_addr; | |
7fe07d14 | 547 | } |
9275c206 | 548 | } |
dff824b2 | 549 | |
9275c206 CH |
550 | static void nvme_free_sgls(struct nvme_dev *dev, struct request *req) |
551 | { | |
552 | const int last_sg = SGES_PER_PAGE - 1; | |
553 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
554 | dma_addr_t dma_addr = iod->first_dma; | |
555 | int i; | |
dff824b2 | 556 | |
c372cdd1 | 557 | for (i = 0; i < iod->nr_allocations; i++) { |
9275c206 CH |
558 | struct nvme_sgl_desc *sg_list = nvme_pci_iod_list(req)[i]; |
559 | dma_addr_t next_dma_addr = le64_to_cpu((sg_list[last_sg]).addr); | |
dff824b2 | 560 | |
9275c206 CH |
561 | dma_pool_free(dev->prp_page_pool, sg_list, dma_addr); |
562 | dma_addr = next_dma_addr; | |
563 | } | |
9275c206 | 564 | } |
a7a7cbe3 | 565 | |
9275c206 CH |
566 | static void nvme_unmap_data(struct nvme_dev *dev, struct request *req) |
567 | { | |
568 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
a7a7cbe3 | 569 | |
9275c206 CH |
570 | if (iod->dma_len) { |
571 | dma_unmap_page(dev->dev, iod->first_dma, iod->dma_len, | |
572 | rq_dma_dir(req)); | |
573 | return; | |
eca18b23 | 574 | } |
ac3dd5bd | 575 | |
91fb2b60 LG |
576 | WARN_ON_ONCE(!iod->sgt.nents); |
577 | ||
578 | dma_unmap_sgtable(dev->dev, &iod->sgt, rq_dma_dir(req), 0); | |
9275c206 | 579 | |
c372cdd1 | 580 | if (iod->nr_allocations == 0) |
9275c206 CH |
581 | dma_pool_free(dev->prp_small_pool, nvme_pci_iod_list(req)[0], |
582 | iod->first_dma); | |
583 | else if (iod->use_sgl) | |
584 | nvme_free_sgls(dev, req); | |
585 | else | |
586 | nvme_free_prps(dev, req); | |
91fb2b60 | 587 | mempool_free(iod->sgt.sgl, dev->iod_mempool); |
b4ff9c8d KB |
588 | } |
589 | ||
d0877473 KB |
590 | static void nvme_print_sgl(struct scatterlist *sgl, int nents) |
591 | { | |
592 | int i; | |
593 | struct scatterlist *sg; | |
594 | ||
595 | for_each_sg(sgl, sg, nents, i) { | |
596 | dma_addr_t phys = sg_phys(sg); | |
597 | pr_warn("sg[%d] phys_addr:%pad offset:%d length:%d " | |
598 | "dma_address:%pad dma_length:%d\n", | |
599 | i, &phys, sg->offset, sg->length, &sg_dma_address(sg), | |
600 | sg_dma_len(sg)); | |
601 | } | |
602 | } | |
603 | ||
a7a7cbe3 CK |
604 | static blk_status_t nvme_pci_setup_prps(struct nvme_dev *dev, |
605 | struct request *req, struct nvme_rw_command *cmnd) | |
ff22b54f | 606 | { |
f4800d6d | 607 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); |
99802a7a | 608 | struct dma_pool *pool; |
b131c61d | 609 | int length = blk_rq_payload_bytes(req); |
91fb2b60 | 610 | struct scatterlist *sg = iod->sgt.sgl; |
ff22b54f MW |
611 | int dma_len = sg_dma_len(sg); |
612 | u64 dma_addr = sg_dma_address(sg); | |
6c3c05b0 | 613 | int offset = dma_addr & (NVME_CTRL_PAGE_SIZE - 1); |
e025344c | 614 | __le64 *prp_list; |
a7a7cbe3 | 615 | void **list = nvme_pci_iod_list(req); |
e025344c | 616 | dma_addr_t prp_dma; |
eca18b23 | 617 | int nprps, i; |
ff22b54f | 618 | |
6c3c05b0 | 619 | length -= (NVME_CTRL_PAGE_SIZE - offset); |
5228b328 JS |
620 | if (length <= 0) { |
621 | iod->first_dma = 0; | |
a7a7cbe3 | 622 | goto done; |
5228b328 | 623 | } |
ff22b54f | 624 | |
6c3c05b0 | 625 | dma_len -= (NVME_CTRL_PAGE_SIZE - offset); |
ff22b54f | 626 | if (dma_len) { |
6c3c05b0 | 627 | dma_addr += (NVME_CTRL_PAGE_SIZE - offset); |
ff22b54f MW |
628 | } else { |
629 | sg = sg_next(sg); | |
630 | dma_addr = sg_dma_address(sg); | |
631 | dma_len = sg_dma_len(sg); | |
632 | } | |
633 | ||
6c3c05b0 | 634 | if (length <= NVME_CTRL_PAGE_SIZE) { |
edd10d33 | 635 | iod->first_dma = dma_addr; |
a7a7cbe3 | 636 | goto done; |
e025344c SMM |
637 | } |
638 | ||
6c3c05b0 | 639 | nprps = DIV_ROUND_UP(length, NVME_CTRL_PAGE_SIZE); |
99802a7a MW |
640 | if (nprps <= (256 / 8)) { |
641 | pool = dev->prp_small_pool; | |
c372cdd1 | 642 | iod->nr_allocations = 0; |
99802a7a MW |
643 | } else { |
644 | pool = dev->prp_page_pool; | |
c372cdd1 | 645 | iod->nr_allocations = 1; |
99802a7a MW |
646 | } |
647 | ||
69d2b571 | 648 | prp_list = dma_pool_alloc(pool, GFP_ATOMIC, &prp_dma); |
b77954cb | 649 | if (!prp_list) { |
c372cdd1 | 650 | iod->nr_allocations = -1; |
86eea289 | 651 | return BLK_STS_RESOURCE; |
b77954cb | 652 | } |
eca18b23 MW |
653 | list[0] = prp_list; |
654 | iod->first_dma = prp_dma; | |
e025344c SMM |
655 | i = 0; |
656 | for (;;) { | |
6c3c05b0 | 657 | if (i == NVME_CTRL_PAGE_SIZE >> 3) { |
e025344c | 658 | __le64 *old_prp_list = prp_list; |
69d2b571 | 659 | prp_list = dma_pool_alloc(pool, GFP_ATOMIC, &prp_dma); |
eca18b23 | 660 | if (!prp_list) |
fa073216 | 661 | goto free_prps; |
c372cdd1 | 662 | list[iod->nr_allocations++] = prp_list; |
7523d834 MW |
663 | prp_list[0] = old_prp_list[i - 1]; |
664 | old_prp_list[i - 1] = cpu_to_le64(prp_dma); | |
665 | i = 1; | |
e025344c SMM |
666 | } |
667 | prp_list[i++] = cpu_to_le64(dma_addr); | |
6c3c05b0 CK |
668 | dma_len -= NVME_CTRL_PAGE_SIZE; |
669 | dma_addr += NVME_CTRL_PAGE_SIZE; | |
670 | length -= NVME_CTRL_PAGE_SIZE; | |
e025344c SMM |
671 | if (length <= 0) |
672 | break; | |
673 | if (dma_len > 0) | |
674 | continue; | |
86eea289 KB |
675 | if (unlikely(dma_len < 0)) |
676 | goto bad_sgl; | |
e025344c SMM |
677 | sg = sg_next(sg); |
678 | dma_addr = sg_dma_address(sg); | |
679 | dma_len = sg_dma_len(sg); | |
ff22b54f | 680 | } |
a7a7cbe3 | 681 | done: |
91fb2b60 | 682 | cmnd->dptr.prp1 = cpu_to_le64(sg_dma_address(iod->sgt.sgl)); |
a7a7cbe3 | 683 | cmnd->dptr.prp2 = cpu_to_le64(iod->first_dma); |
86eea289 | 684 | return BLK_STS_OK; |
fa073216 CH |
685 | free_prps: |
686 | nvme_free_prps(dev, req); | |
687 | return BLK_STS_RESOURCE; | |
688 | bad_sgl: | |
91fb2b60 | 689 | WARN(DO_ONCE(nvme_print_sgl, iod->sgt.sgl, iod->sgt.nents), |
d0877473 | 690 | "Invalid SGL for payload:%d nents:%d\n", |
91fb2b60 | 691 | blk_rq_payload_bytes(req), iod->sgt.nents); |
86eea289 | 692 | return BLK_STS_IOERR; |
ff22b54f MW |
693 | } |
694 | ||
a7a7cbe3 CK |
695 | static void nvme_pci_sgl_set_data(struct nvme_sgl_desc *sge, |
696 | struct scatterlist *sg) | |
697 | { | |
698 | sge->addr = cpu_to_le64(sg_dma_address(sg)); | |
699 | sge->length = cpu_to_le32(sg_dma_len(sg)); | |
700 | sge->type = NVME_SGL_FMT_DATA_DESC << 4; | |
701 | } | |
702 | ||
703 | static void nvme_pci_sgl_set_seg(struct nvme_sgl_desc *sge, | |
704 | dma_addr_t dma_addr, int entries) | |
705 | { | |
706 | sge->addr = cpu_to_le64(dma_addr); | |
707 | if (entries < SGES_PER_PAGE) { | |
708 | sge->length = cpu_to_le32(entries * sizeof(*sge)); | |
709 | sge->type = NVME_SGL_FMT_LAST_SEG_DESC << 4; | |
710 | } else { | |
711 | sge->length = cpu_to_le32(PAGE_SIZE); | |
712 | sge->type = NVME_SGL_FMT_SEG_DESC << 4; | |
713 | } | |
714 | } | |
715 | ||
716 | static blk_status_t nvme_pci_setup_sgls(struct nvme_dev *dev, | |
91fb2b60 | 717 | struct request *req, struct nvme_rw_command *cmd) |
a7a7cbe3 CK |
718 | { |
719 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
a7a7cbe3 CK |
720 | struct dma_pool *pool; |
721 | struct nvme_sgl_desc *sg_list; | |
91fb2b60 LG |
722 | struct scatterlist *sg = iod->sgt.sgl; |
723 | unsigned int entries = iod->sgt.nents; | |
a7a7cbe3 | 724 | dma_addr_t sgl_dma; |
b0f2853b | 725 | int i = 0; |
a7a7cbe3 | 726 | |
a7a7cbe3 CK |
727 | /* setting the transfer type as SGL */ |
728 | cmd->flags = NVME_CMD_SGL_METABUF; | |
729 | ||
b0f2853b | 730 | if (entries == 1) { |
a7a7cbe3 CK |
731 | nvme_pci_sgl_set_data(&cmd->dptr.sgl, sg); |
732 | return BLK_STS_OK; | |
733 | } | |
734 | ||
735 | if (entries <= (256 / sizeof(struct nvme_sgl_desc))) { | |
736 | pool = dev->prp_small_pool; | |
c372cdd1 | 737 | iod->nr_allocations = 0; |
a7a7cbe3 CK |
738 | } else { |
739 | pool = dev->prp_page_pool; | |
c372cdd1 | 740 | iod->nr_allocations = 1; |
a7a7cbe3 CK |
741 | } |
742 | ||
743 | sg_list = dma_pool_alloc(pool, GFP_ATOMIC, &sgl_dma); | |
744 | if (!sg_list) { | |
c372cdd1 | 745 | iod->nr_allocations = -1; |
a7a7cbe3 CK |
746 | return BLK_STS_RESOURCE; |
747 | } | |
748 | ||
749 | nvme_pci_iod_list(req)[0] = sg_list; | |
750 | iod->first_dma = sgl_dma; | |
751 | ||
752 | nvme_pci_sgl_set_seg(&cmd->dptr.sgl, sgl_dma, entries); | |
753 | ||
754 | do { | |
755 | if (i == SGES_PER_PAGE) { | |
756 | struct nvme_sgl_desc *old_sg_desc = sg_list; | |
757 | struct nvme_sgl_desc *link = &old_sg_desc[i - 1]; | |
758 | ||
759 | sg_list = dma_pool_alloc(pool, GFP_ATOMIC, &sgl_dma); | |
760 | if (!sg_list) | |
fa073216 | 761 | goto free_sgls; |
a7a7cbe3 CK |
762 | |
763 | i = 0; | |
c372cdd1 | 764 | nvme_pci_iod_list(req)[iod->nr_allocations++] = sg_list; |
a7a7cbe3 CK |
765 | sg_list[i++] = *link; |
766 | nvme_pci_sgl_set_seg(link, sgl_dma, entries); | |
767 | } | |
768 | ||
769 | nvme_pci_sgl_set_data(&sg_list[i++], sg); | |
a7a7cbe3 | 770 | sg = sg_next(sg); |
b0f2853b | 771 | } while (--entries > 0); |
a7a7cbe3 | 772 | |
a7a7cbe3 | 773 | return BLK_STS_OK; |
fa073216 CH |
774 | free_sgls: |
775 | nvme_free_sgls(dev, req); | |
776 | return BLK_STS_RESOURCE; | |
a7a7cbe3 CK |
777 | } |
778 | ||
dff824b2 CH |
779 | static blk_status_t nvme_setup_prp_simple(struct nvme_dev *dev, |
780 | struct request *req, struct nvme_rw_command *cmnd, | |
781 | struct bio_vec *bv) | |
782 | { | |
783 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
6c3c05b0 CK |
784 | unsigned int offset = bv->bv_offset & (NVME_CTRL_PAGE_SIZE - 1); |
785 | unsigned int first_prp_len = NVME_CTRL_PAGE_SIZE - offset; | |
dff824b2 CH |
786 | |
787 | iod->first_dma = dma_map_bvec(dev->dev, bv, rq_dma_dir(req), 0); | |
788 | if (dma_mapping_error(dev->dev, iod->first_dma)) | |
789 | return BLK_STS_RESOURCE; | |
790 | iod->dma_len = bv->bv_len; | |
791 | ||
792 | cmnd->dptr.prp1 = cpu_to_le64(iod->first_dma); | |
793 | if (bv->bv_len > first_prp_len) | |
794 | cmnd->dptr.prp2 = cpu_to_le64(iod->first_dma + first_prp_len); | |
359c1f88 | 795 | return BLK_STS_OK; |
dff824b2 CH |
796 | } |
797 | ||
29791057 CH |
798 | static blk_status_t nvme_setup_sgl_simple(struct nvme_dev *dev, |
799 | struct request *req, struct nvme_rw_command *cmnd, | |
800 | struct bio_vec *bv) | |
801 | { | |
802 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
803 | ||
804 | iod->first_dma = dma_map_bvec(dev->dev, bv, rq_dma_dir(req), 0); | |
805 | if (dma_mapping_error(dev->dev, iod->first_dma)) | |
806 | return BLK_STS_RESOURCE; | |
807 | iod->dma_len = bv->bv_len; | |
808 | ||
049bf372 | 809 | cmnd->flags = NVME_CMD_SGL_METABUF; |
29791057 CH |
810 | cmnd->dptr.sgl.addr = cpu_to_le64(iod->first_dma); |
811 | cmnd->dptr.sgl.length = cpu_to_le32(iod->dma_len); | |
812 | cmnd->dptr.sgl.type = NVME_SGL_FMT_DATA_DESC << 4; | |
359c1f88 | 813 | return BLK_STS_OK; |
29791057 CH |
814 | } |
815 | ||
fc17b653 | 816 | static blk_status_t nvme_map_data(struct nvme_dev *dev, struct request *req, |
b131c61d | 817 | struct nvme_command *cmnd) |
d29ec824 | 818 | { |
f4800d6d | 819 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); |
70479b71 | 820 | blk_status_t ret = BLK_STS_RESOURCE; |
91fb2b60 | 821 | int rc; |
d29ec824 | 822 | |
dff824b2 | 823 | if (blk_rq_nr_phys_segments(req) == 1) { |
a53232cb | 824 | struct nvme_queue *nvmeq = req->mq_hctx->driver_data; |
dff824b2 CH |
825 | struct bio_vec bv = req_bvec(req); |
826 | ||
827 | if (!is_pci_p2pdma_page(bv.bv_page)) { | |
6c3c05b0 | 828 | if (bv.bv_offset + bv.bv_len <= NVME_CTRL_PAGE_SIZE * 2) |
dff824b2 CH |
829 | return nvme_setup_prp_simple(dev, req, |
830 | &cmnd->rw, &bv); | |
29791057 | 831 | |
a53232cb | 832 | if (nvmeq->qid && sgl_threshold && |
253a0b76 | 833 | nvme_ctrl_sgl_supported(&dev->ctrl)) |
29791057 CH |
834 | return nvme_setup_sgl_simple(dev, req, |
835 | &cmnd->rw, &bv); | |
dff824b2 CH |
836 | } |
837 | } | |
838 | ||
839 | iod->dma_len = 0; | |
91fb2b60 LG |
840 | iod->sgt.sgl = mempool_alloc(dev->iod_mempool, GFP_ATOMIC); |
841 | if (!iod->sgt.sgl) | |
d43f1ccf | 842 | return BLK_STS_RESOURCE; |
91fb2b60 LG |
843 | sg_init_table(iod->sgt.sgl, blk_rq_nr_phys_segments(req)); |
844 | iod->sgt.orig_nents = blk_rq_map_sg(req->q, req, iod->sgt.sgl); | |
845 | if (!iod->sgt.orig_nents) | |
fa073216 | 846 | goto out_free_sg; |
d29ec824 | 847 | |
91fb2b60 LG |
848 | rc = dma_map_sgtable(dev->dev, &iod->sgt, rq_dma_dir(req), |
849 | DMA_ATTR_NO_WARN); | |
850 | if (rc) { | |
851 | if (rc == -EREMOTEIO) | |
852 | ret = BLK_STS_TARGET; | |
fa073216 | 853 | goto out_free_sg; |
91fb2b60 | 854 | } |
d29ec824 | 855 | |
70479b71 | 856 | iod->use_sgl = nvme_pci_use_sgls(dev, req); |
955b1b5a | 857 | if (iod->use_sgl) |
91fb2b60 | 858 | ret = nvme_pci_setup_sgls(dev, req, &cmnd->rw); |
a7a7cbe3 CK |
859 | else |
860 | ret = nvme_pci_setup_prps(dev, req, &cmnd->rw); | |
86eea289 | 861 | if (ret != BLK_STS_OK) |
fa073216 CH |
862 | goto out_unmap_sg; |
863 | return BLK_STS_OK; | |
864 | ||
865 | out_unmap_sg: | |
91fb2b60 | 866 | dma_unmap_sgtable(dev->dev, &iod->sgt, rq_dma_dir(req), 0); |
fa073216 | 867 | out_free_sg: |
91fb2b60 | 868 | mempool_free(iod->sgt.sgl, dev->iod_mempool); |
4aedb705 CH |
869 | return ret; |
870 | } | |
3045c0d0 | 871 | |
4aedb705 CH |
872 | static blk_status_t nvme_map_metadata(struct nvme_dev *dev, struct request *req, |
873 | struct nvme_command *cmnd) | |
874 | { | |
875 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
00df5cb4 | 876 | |
4aedb705 CH |
877 | iod->meta_dma = dma_map_bvec(dev->dev, rq_integrity_vec(req), |
878 | rq_dma_dir(req), 0); | |
879 | if (dma_mapping_error(dev->dev, iod->meta_dma)) | |
880 | return BLK_STS_IOERR; | |
881 | cmnd->rw.metadata = cpu_to_le64(iod->meta_dma); | |
359c1f88 | 882 | return BLK_STS_OK; |
00df5cb4 MW |
883 | } |
884 | ||
62451a2b | 885 | static blk_status_t nvme_prep_rq(struct nvme_dev *dev, struct request *req) |
edd10d33 | 886 | { |
9b048119 | 887 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); |
ebe6d874 | 888 | blk_status_t ret; |
e1e5e564 | 889 | |
52da4f3f | 890 | iod->aborted = false; |
c372cdd1 | 891 | iod->nr_allocations = -1; |
91fb2b60 | 892 | iod->sgt.nents = 0; |
9b048119 | 893 | |
62451a2b | 894 | ret = nvme_setup_cmd(req->q->queuedata, req); |
fc17b653 | 895 | if (ret) |
f4800d6d | 896 | return ret; |
a4aea562 | 897 | |
fc17b653 | 898 | if (blk_rq_nr_phys_segments(req)) { |
62451a2b | 899 | ret = nvme_map_data(dev, req, &iod->cmd); |
fc17b653 | 900 | if (ret) |
9b048119 | 901 | goto out_free_cmd; |
fc17b653 | 902 | } |
a4aea562 | 903 | |
4aedb705 | 904 | if (blk_integrity_rq(req)) { |
62451a2b | 905 | ret = nvme_map_metadata(dev, req, &iod->cmd); |
4aedb705 CH |
906 | if (ret) |
907 | goto out_unmap_data; | |
908 | } | |
909 | ||
6887fc64 | 910 | nvme_start_request(req); |
fc17b653 | 911 | return BLK_STS_OK; |
4aedb705 CH |
912 | out_unmap_data: |
913 | nvme_unmap_data(dev, req); | |
f9d03f96 CH |
914 | out_free_cmd: |
915 | nvme_cleanup_cmd(req); | |
ba1ca37e | 916 | return ret; |
b60503ba | 917 | } |
e1e5e564 | 918 | |
62451a2b JA |
919 | /* |
920 | * NOTE: ns is NULL when called on the admin queue. | |
921 | */ | |
922 | static blk_status_t nvme_queue_rq(struct blk_mq_hw_ctx *hctx, | |
923 | const struct blk_mq_queue_data *bd) | |
924 | { | |
925 | struct nvme_queue *nvmeq = hctx->driver_data; | |
926 | struct nvme_dev *dev = nvmeq->dev; | |
927 | struct request *req = bd->rq; | |
928 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
929 | blk_status_t ret; | |
930 | ||
931 | /* | |
932 | * We should not need to do this, but we're still using this to | |
933 | * ensure we can drain requests on a dying queue. | |
934 | */ | |
935 | if (unlikely(!test_bit(NVMEQ_ENABLED, &nvmeq->flags))) | |
936 | return BLK_STS_IOERR; | |
937 | ||
938 | if (unlikely(!nvme_check_ready(&dev->ctrl, req, true))) | |
939 | return nvme_fail_nonready_command(&dev->ctrl, req); | |
940 | ||
941 | ret = nvme_prep_rq(dev, req); | |
942 | if (unlikely(ret)) | |
943 | return ret; | |
944 | spin_lock(&nvmeq->sq_lock); | |
945 | nvme_sq_copy_cmd(nvmeq, &iod->cmd); | |
946 | nvme_write_sq_db(nvmeq, bd->last); | |
947 | spin_unlock(&nvmeq->sq_lock); | |
948 | return BLK_STS_OK; | |
949 | } | |
950 | ||
d62cbcf6 JA |
951 | static void nvme_submit_cmds(struct nvme_queue *nvmeq, struct request **rqlist) |
952 | { | |
953 | spin_lock(&nvmeq->sq_lock); | |
954 | while (!rq_list_empty(*rqlist)) { | |
955 | struct request *req = rq_list_pop(rqlist); | |
956 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
957 | ||
958 | nvme_sq_copy_cmd(nvmeq, &iod->cmd); | |
959 | } | |
960 | nvme_write_sq_db(nvmeq, true); | |
961 | spin_unlock(&nvmeq->sq_lock); | |
962 | } | |
963 | ||
964 | static bool nvme_prep_rq_batch(struct nvme_queue *nvmeq, struct request *req) | |
965 | { | |
966 | /* | |
967 | * We should not need to do this, but we're still using this to | |
968 | * ensure we can drain requests on a dying queue. | |
969 | */ | |
970 | if (unlikely(!test_bit(NVMEQ_ENABLED, &nvmeq->flags))) | |
971 | return false; | |
972 | if (unlikely(!nvme_check_ready(&nvmeq->dev->ctrl, req, true))) | |
973 | return false; | |
974 | ||
975 | req->mq_hctx->tags->rqs[req->tag] = req; | |
976 | return nvme_prep_rq(nvmeq->dev, req) == BLK_STS_OK; | |
977 | } | |
978 | ||
979 | static void nvme_queue_rqs(struct request **rqlist) | |
980 | { | |
6bfec799 | 981 | struct request *req, *next, *prev = NULL; |
d62cbcf6 JA |
982 | struct request *requeue_list = NULL; |
983 | ||
6bfec799 | 984 | rq_list_for_each_safe(rqlist, req, next) { |
d62cbcf6 JA |
985 | struct nvme_queue *nvmeq = req->mq_hctx->driver_data; |
986 | ||
987 | if (!nvme_prep_rq_batch(nvmeq, req)) { | |
988 | /* detach 'req' and add to remainder list */ | |
6bfec799 KB |
989 | rq_list_move(rqlist, &requeue_list, req, prev); |
990 | ||
991 | req = prev; | |
992 | if (!req) | |
993 | continue; | |
d62cbcf6 JA |
994 | } |
995 | ||
6bfec799 | 996 | if (!next || req->mq_hctx != next->mq_hctx) { |
d62cbcf6 | 997 | /* detach rest of list, and submit */ |
6bfec799 | 998 | req->rq_next = NULL; |
d62cbcf6 | 999 | nvme_submit_cmds(nvmeq, rqlist); |
6bfec799 KB |
1000 | *rqlist = next; |
1001 | prev = NULL; | |
1002 | } else | |
1003 | prev = req; | |
1004 | } | |
d62cbcf6 JA |
1005 | |
1006 | *rqlist = requeue_list; | |
1007 | } | |
1008 | ||
c234a653 | 1009 | static __always_inline void nvme_pci_unmap_rq(struct request *req) |
eee417b0 | 1010 | { |
a53232cb KB |
1011 | struct nvme_queue *nvmeq = req->mq_hctx->driver_data; |
1012 | struct nvme_dev *dev = nvmeq->dev; | |
1013 | ||
1014 | if (blk_integrity_rq(req)) { | |
1015 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); | |
a4aea562 | 1016 | |
4aedb705 CH |
1017 | dma_unmap_page(dev->dev, iod->meta_dma, |
1018 | rq_integrity_vec(req)->bv_len, rq_data_dir(req)); | |
a53232cb KB |
1019 | } |
1020 | ||
b15c592d | 1021 | if (blk_rq_nr_phys_segments(req)) |
4aedb705 | 1022 | nvme_unmap_data(dev, req); |
c234a653 JA |
1023 | } |
1024 | ||
1025 | static void nvme_pci_complete_rq(struct request *req) | |
1026 | { | |
1027 | nvme_pci_unmap_rq(req); | |
77f02a7a | 1028 | nvme_complete_rq(req); |
b60503ba MW |
1029 | } |
1030 | ||
c234a653 JA |
1031 | static void nvme_pci_complete_batch(struct io_comp_batch *iob) |
1032 | { | |
1033 | nvme_complete_batch(iob, nvme_pci_unmap_rq); | |
1034 | } | |
1035 | ||
d783e0bd | 1036 | /* We read the CQE phase first to check if the rest of the entry is valid */ |
750dde44 | 1037 | static inline bool nvme_cqe_pending(struct nvme_queue *nvmeq) |
d783e0bd | 1038 | { |
74943d45 KB |
1039 | struct nvme_completion *hcqe = &nvmeq->cqes[nvmeq->cq_head]; |
1040 | ||
1041 | return (le16_to_cpu(READ_ONCE(hcqe->status)) & 1) == nvmeq->cq_phase; | |
d783e0bd MR |
1042 | } |
1043 | ||
eb281c82 | 1044 | static inline void nvme_ring_cq_doorbell(struct nvme_queue *nvmeq) |
b60503ba | 1045 | { |
eb281c82 | 1046 | u16 head = nvmeq->cq_head; |
adf68f21 | 1047 | |
397c699f KB |
1048 | if (nvme_dbbuf_update_and_check_event(head, nvmeq->dbbuf_cq_db, |
1049 | nvmeq->dbbuf_cq_ei)) | |
1050 | writel(head, nvmeq->q_db + nvmeq->dev->db_stride); | |
eb281c82 | 1051 | } |
aae239e1 | 1052 | |
cfa27356 CH |
1053 | static inline struct blk_mq_tags *nvme_queue_tagset(struct nvme_queue *nvmeq) |
1054 | { | |
1055 | if (!nvmeq->qid) | |
1056 | return nvmeq->dev->admin_tagset.tags[0]; | |
1057 | return nvmeq->dev->tagset.tags[nvmeq->qid - 1]; | |
1058 | } | |
1059 | ||
c234a653 JA |
1060 | static inline void nvme_handle_cqe(struct nvme_queue *nvmeq, |
1061 | struct io_comp_batch *iob, u16 idx) | |
83a12fb7 | 1062 | { |
74943d45 | 1063 | struct nvme_completion *cqe = &nvmeq->cqes[idx]; |
62df8016 | 1064 | __u16 command_id = READ_ONCE(cqe->command_id); |
83a12fb7 | 1065 | struct request *req; |
adf68f21 | 1066 | |
83a12fb7 SG |
1067 | /* |
1068 | * AEN requests are special as they don't time out and can | |
1069 | * survive any kind of queue freeze and often don't respond to | |
1070 | * aborts. We don't even bother to allocate a struct request | |
1071 | * for them but rather special case them here. | |
1072 | */ | |
62df8016 | 1073 | if (unlikely(nvme_is_aen_req(nvmeq->qid, command_id))) { |
83a12fb7 SG |
1074 | nvme_complete_async_event(&nvmeq->dev->ctrl, |
1075 | cqe->status, &cqe->result); | |
a0fa9647 | 1076 | return; |
83a12fb7 | 1077 | } |
b60503ba | 1078 | |
e7006de6 | 1079 | req = nvme_find_rq(nvme_queue_tagset(nvmeq), command_id); |
50b7c243 XT |
1080 | if (unlikely(!req)) { |
1081 | dev_warn(nvmeq->dev->ctrl.device, | |
1082 | "invalid id %d completed on queue %d\n", | |
62df8016 | 1083 | command_id, le16_to_cpu(cqe->sq_id)); |
50b7c243 XT |
1084 | return; |
1085 | } | |
1086 | ||
604c01d5 | 1087 | trace_nvme_sq(req, cqe->sq_head, nvmeq->sq_tail); |
c234a653 JA |
1088 | if (!nvme_try_complete_req(req, cqe->status, cqe->result) && |
1089 | !blk_mq_add_to_batch(req, iob, nvme_req(req)->status, | |
1090 | nvme_pci_complete_batch)) | |
ff029451 | 1091 | nvme_pci_complete_rq(req); |
83a12fb7 | 1092 | } |
b60503ba | 1093 | |
5cb525c8 JA |
1094 | static inline void nvme_update_cq_head(struct nvme_queue *nvmeq) |
1095 | { | |
a0aac973 | 1096 | u32 tmp = nvmeq->cq_head + 1; |
a8de6639 AD |
1097 | |
1098 | if (tmp == nvmeq->q_depth) { | |
5cb525c8 | 1099 | nvmeq->cq_head = 0; |
e2a366a4 | 1100 | nvmeq->cq_phase ^= 1; |
a8de6639 AD |
1101 | } else { |
1102 | nvmeq->cq_head = tmp; | |
b60503ba | 1103 | } |
a0fa9647 JA |
1104 | } |
1105 | ||
c234a653 JA |
1106 | static inline int nvme_poll_cq(struct nvme_queue *nvmeq, |
1107 | struct io_comp_batch *iob) | |
a0fa9647 | 1108 | { |
1052b8ac | 1109 | int found = 0; |
b60503ba | 1110 | |
1052b8ac | 1111 | while (nvme_cqe_pending(nvmeq)) { |
bf392a5d | 1112 | found++; |
b69e2ef2 KB |
1113 | /* |
1114 | * load-load control dependency between phase and the rest of | |
1115 | * the cqe requires a full read memory barrier | |
1116 | */ | |
1117 | dma_rmb(); | |
c234a653 | 1118 | nvme_handle_cqe(nvmeq, iob, nvmeq->cq_head); |
5cb525c8 | 1119 | nvme_update_cq_head(nvmeq); |
920d13a8 | 1120 | } |
eb281c82 | 1121 | |
324b494c | 1122 | if (found) |
920d13a8 | 1123 | nvme_ring_cq_doorbell(nvmeq); |
5cb525c8 | 1124 | return found; |
b60503ba MW |
1125 | } |
1126 | ||
1127 | static irqreturn_t nvme_irq(int irq, void *data) | |
58ffacb5 | 1128 | { |
58ffacb5 | 1129 | struct nvme_queue *nvmeq = data; |
4f502245 | 1130 | DEFINE_IO_COMP_BATCH(iob); |
5cb525c8 | 1131 | |
4f502245 JA |
1132 | if (nvme_poll_cq(nvmeq, &iob)) { |
1133 | if (!rq_list_empty(iob.req_list)) | |
1134 | nvme_pci_complete_batch(&iob); | |
05fae499 | 1135 | return IRQ_HANDLED; |
4f502245 | 1136 | } |
05fae499 | 1137 | return IRQ_NONE; |
58ffacb5 MW |
1138 | } |
1139 | ||
1140 | static irqreturn_t nvme_irq_check(int irq, void *data) | |
1141 | { | |
1142 | struct nvme_queue *nvmeq = data; | |
4e523547 | 1143 | |
750dde44 | 1144 | if (nvme_cqe_pending(nvmeq)) |
d783e0bd MR |
1145 | return IRQ_WAKE_THREAD; |
1146 | return IRQ_NONE; | |
58ffacb5 MW |
1147 | } |
1148 | ||
0b2a8a9f | 1149 | /* |
fa059b85 | 1150 | * Poll for completions for any interrupt driven queue |
0b2a8a9f CH |
1151 | * Can be called from any context. |
1152 | */ | |
fa059b85 | 1153 | static void nvme_poll_irqdisable(struct nvme_queue *nvmeq) |
a0fa9647 | 1154 | { |
3a7afd8e | 1155 | struct pci_dev *pdev = to_pci_dev(nvmeq->dev->dev); |
a0fa9647 | 1156 | |
fa059b85 | 1157 | WARN_ON_ONCE(test_bit(NVMEQ_POLLED, &nvmeq->flags)); |
442e19b7 | 1158 | |
fa059b85 | 1159 | disable_irq(pci_irq_vector(pdev, nvmeq->cq_vector)); |
c234a653 | 1160 | nvme_poll_cq(nvmeq, NULL); |
fa059b85 | 1161 | enable_irq(pci_irq_vector(pdev, nvmeq->cq_vector)); |
a0fa9647 JA |
1162 | } |
1163 | ||
5a72e899 | 1164 | static int nvme_poll(struct blk_mq_hw_ctx *hctx, struct io_comp_batch *iob) |
dabcefab JA |
1165 | { |
1166 | struct nvme_queue *nvmeq = hctx->driver_data; | |
dabcefab JA |
1167 | bool found; |
1168 | ||
1169 | if (!nvme_cqe_pending(nvmeq)) | |
1170 | return 0; | |
1171 | ||
3a7afd8e | 1172 | spin_lock(&nvmeq->cq_poll_lock); |
c234a653 | 1173 | found = nvme_poll_cq(nvmeq, iob); |
3a7afd8e | 1174 | spin_unlock(&nvmeq->cq_poll_lock); |
dabcefab | 1175 | |
dabcefab JA |
1176 | return found; |
1177 | } | |
1178 | ||
ad22c355 | 1179 | static void nvme_pci_submit_async_event(struct nvme_ctrl *ctrl) |
b60503ba | 1180 | { |
f866fc42 | 1181 | struct nvme_dev *dev = to_nvme_dev(ctrl); |
147b27e4 | 1182 | struct nvme_queue *nvmeq = &dev->queues[0]; |
f66e2804 | 1183 | struct nvme_command c = { }; |
b60503ba | 1184 | |
a4aea562 | 1185 | c.common.opcode = nvme_admin_async_event; |
ad22c355 | 1186 | c.common.command_id = NVME_AQ_BLK_MQ_DEPTH; |
3233b94c JA |
1187 | |
1188 | spin_lock(&nvmeq->sq_lock); | |
1189 | nvme_sq_copy_cmd(nvmeq, &c); | |
1190 | nvme_write_sq_db(nvmeq, true); | |
1191 | spin_unlock(&nvmeq->sq_lock); | |
f705f837 CH |
1192 | } |
1193 | ||
b60503ba | 1194 | static int adapter_delete_queue(struct nvme_dev *dev, u8 opcode, u16 id) |
f705f837 | 1195 | { |
f66e2804 | 1196 | struct nvme_command c = { }; |
b60503ba | 1197 | |
b60503ba MW |
1198 | c.delete_queue.opcode = opcode; |
1199 | c.delete_queue.qid = cpu_to_le16(id); | |
1200 | ||
1c63dc66 | 1201 | return nvme_submit_sync_cmd(dev->ctrl.admin_q, &c, NULL, 0); |
b60503ba MW |
1202 | } |
1203 | ||
b60503ba | 1204 | static int adapter_alloc_cq(struct nvme_dev *dev, u16 qid, |
a8e3e0bb | 1205 | struct nvme_queue *nvmeq, s16 vector) |
b60503ba | 1206 | { |
f66e2804 | 1207 | struct nvme_command c = { }; |
4b04cc6a JA |
1208 | int flags = NVME_QUEUE_PHYS_CONTIG; |
1209 | ||
7c349dde | 1210 | if (!test_bit(NVMEQ_POLLED, &nvmeq->flags)) |
4b04cc6a | 1211 | flags |= NVME_CQ_IRQ_ENABLED; |
b60503ba | 1212 | |
d29ec824 | 1213 | /* |
16772ae6 | 1214 | * Note: we (ab)use the fact that the prp fields survive if no data |
d29ec824 CH |
1215 | * is attached to the request. |
1216 | */ | |
b60503ba MW |
1217 | c.create_cq.opcode = nvme_admin_create_cq; |
1218 | c.create_cq.prp1 = cpu_to_le64(nvmeq->cq_dma_addr); | |
1219 | c.create_cq.cqid = cpu_to_le16(qid); | |
1220 | c.create_cq.qsize = cpu_to_le16(nvmeq->q_depth - 1); | |
1221 | c.create_cq.cq_flags = cpu_to_le16(flags); | |
7c349dde | 1222 | c.create_cq.irq_vector = cpu_to_le16(vector); |
b60503ba | 1223 | |
1c63dc66 | 1224 | return nvme_submit_sync_cmd(dev->ctrl.admin_q, &c, NULL, 0); |
b60503ba MW |
1225 | } |
1226 | ||
1227 | static int adapter_alloc_sq(struct nvme_dev *dev, u16 qid, | |
1228 | struct nvme_queue *nvmeq) | |
1229 | { | |
9abd68ef | 1230 | struct nvme_ctrl *ctrl = &dev->ctrl; |
f66e2804 | 1231 | struct nvme_command c = { }; |
81c1cd98 | 1232 | int flags = NVME_QUEUE_PHYS_CONTIG; |
b60503ba | 1233 | |
9abd68ef JA |
1234 | /* |
1235 | * Some drives have a bug that auto-enables WRRU if MEDIUM isn't | |
1236 | * set. Since URGENT priority is zeroes, it makes all queues | |
1237 | * URGENT. | |
1238 | */ | |
1239 | if (ctrl->quirks & NVME_QUIRK_MEDIUM_PRIO_SQ) | |
1240 | flags |= NVME_SQ_PRIO_MEDIUM; | |
1241 | ||
d29ec824 | 1242 | /* |
16772ae6 | 1243 | * Note: we (ab)use the fact that the prp fields survive if no data |
d29ec824 CH |
1244 | * is attached to the request. |
1245 | */ | |
b60503ba MW |
1246 | c.create_sq.opcode = nvme_admin_create_sq; |
1247 | c.create_sq.prp1 = cpu_to_le64(nvmeq->sq_dma_addr); | |
1248 | c.create_sq.sqid = cpu_to_le16(qid); | |
1249 | c.create_sq.qsize = cpu_to_le16(nvmeq->q_depth - 1); | |
1250 | c.create_sq.sq_flags = cpu_to_le16(flags); | |
1251 | c.create_sq.cqid = cpu_to_le16(qid); | |
1252 | ||
1c63dc66 | 1253 | return nvme_submit_sync_cmd(dev->ctrl.admin_q, &c, NULL, 0); |
b60503ba MW |
1254 | } |
1255 | ||
1256 | static int adapter_delete_cq(struct nvme_dev *dev, u16 cqid) | |
1257 | { | |
1258 | return adapter_delete_queue(dev, nvme_admin_delete_cq, cqid); | |
1259 | } | |
1260 | ||
1261 | static int adapter_delete_sq(struct nvme_dev *dev, u16 sqid) | |
1262 | { | |
1263 | return adapter_delete_queue(dev, nvme_admin_delete_sq, sqid); | |
1264 | } | |
1265 | ||
de671d61 | 1266 | static enum rq_end_io_ret abort_endio(struct request *req, blk_status_t error) |
bc5fc7e4 | 1267 | { |
a53232cb | 1268 | struct nvme_queue *nvmeq = req->mq_hctx->driver_data; |
e44ac588 | 1269 | |
27fa9bc5 CH |
1270 | dev_warn(nvmeq->dev->ctrl.device, |
1271 | "Abort status: 0x%x", nvme_req(req)->status); | |
e7a2a87d | 1272 | atomic_inc(&nvmeq->dev->ctrl.abort_limit); |
e7a2a87d | 1273 | blk_mq_free_request(req); |
de671d61 | 1274 | return RQ_END_IO_NONE; |
bc5fc7e4 MW |
1275 | } |
1276 | ||
b2a0eb1a KB |
1277 | static bool nvme_should_reset(struct nvme_dev *dev, u32 csts) |
1278 | { | |
b2a0eb1a KB |
1279 | /* If true, indicates loss of adapter communication, possibly by a |
1280 | * NVMe Subsystem reset. | |
1281 | */ | |
1282 | bool nssro = dev->subsystem && (csts & NVME_CSTS_NSSRO); | |
1283 | ||
ad70062c JW |
1284 | /* If there is a reset/reinit ongoing, we shouldn't reset again. */ |
1285 | switch (dev->ctrl.state) { | |
1286 | case NVME_CTRL_RESETTING: | |
ad6a0a52 | 1287 | case NVME_CTRL_CONNECTING: |
b2a0eb1a | 1288 | return false; |
ad70062c JW |
1289 | default: |
1290 | break; | |
1291 | } | |
b2a0eb1a KB |
1292 | |
1293 | /* We shouldn't reset unless the controller is on fatal error state | |
1294 | * _or_ if we lost the communication with it. | |
1295 | */ | |
1296 | if (!(csts & NVME_CSTS_CFS) && !nssro) | |
1297 | return false; | |
1298 | ||
b2a0eb1a KB |
1299 | return true; |
1300 | } | |
1301 | ||
1302 | static void nvme_warn_reset(struct nvme_dev *dev, u32 csts) | |
1303 | { | |
1304 | /* Read a config register to help see what died. */ | |
1305 | u16 pci_status; | |
1306 | int result; | |
1307 | ||
1308 | result = pci_read_config_word(to_pci_dev(dev->dev), PCI_STATUS, | |
1309 | &pci_status); | |
1310 | if (result == PCIBIOS_SUCCESSFUL) | |
1311 | dev_warn(dev->ctrl.device, | |
1312 | "controller is down; will reset: CSTS=0x%x, PCI_STATUS=0x%hx\n", | |
1313 | csts, pci_status); | |
1314 | else | |
1315 | dev_warn(dev->ctrl.device, | |
1316 | "controller is down; will reset: CSTS=0x%x, PCI_STATUS read failed (%d)\n", | |
1317 | csts, result); | |
4641a8e6 KB |
1318 | |
1319 | if (csts != ~0) | |
1320 | return; | |
1321 | ||
1322 | dev_warn(dev->ctrl.device, | |
1323 | "Does your device have a faulty power saving mode enabled?\n"); | |
1324 | dev_warn(dev->ctrl.device, | |
1325 | "Try \"nvme_core.default_ps_max_latency_us=0 pcie_aspm=off\" and report a bug\n"); | |
b2a0eb1a KB |
1326 | } |
1327 | ||
9bdb4833 | 1328 | static enum blk_eh_timer_return nvme_timeout(struct request *req) |
c30341dc | 1329 | { |
f4800d6d | 1330 | struct nvme_iod *iod = blk_mq_rq_to_pdu(req); |
a53232cb | 1331 | struct nvme_queue *nvmeq = req->mq_hctx->driver_data; |
c30341dc | 1332 | struct nvme_dev *dev = nvmeq->dev; |
a4aea562 | 1333 | struct request *abort_req; |
f66e2804 | 1334 | struct nvme_command cmd = { }; |
b2a0eb1a KB |
1335 | u32 csts = readl(dev->bar + NVME_REG_CSTS); |
1336 | ||
651438bb WX |
1337 | /* If PCI error recovery process is happening, we cannot reset or |
1338 | * the recovery mechanism will surely fail. | |
1339 | */ | |
1340 | mb(); | |
1341 | if (pci_channel_offline(to_pci_dev(dev->dev))) | |
1342 | return BLK_EH_RESET_TIMER; | |
1343 | ||
b2a0eb1a KB |
1344 | /* |
1345 | * Reset immediately if the controller is failed | |
1346 | */ | |
1347 | if (nvme_should_reset(dev, csts)) { | |
1348 | nvme_warn_reset(dev, csts); | |
1349 | nvme_dev_disable(dev, false); | |
d86c4d8e | 1350 | nvme_reset_ctrl(&dev->ctrl); |
db8c48e4 | 1351 | return BLK_EH_DONE; |
b2a0eb1a | 1352 | } |
c30341dc | 1353 | |
7776db1c KB |
1354 | /* |
1355 | * Did we miss an interrupt? | |
1356 | */ | |
fa059b85 | 1357 | if (test_bit(NVMEQ_POLLED, &nvmeq->flags)) |
5a72e899 | 1358 | nvme_poll(req->mq_hctx, NULL); |
fa059b85 KB |
1359 | else |
1360 | nvme_poll_irqdisable(nvmeq); | |
1361 | ||
bf392a5d | 1362 | if (blk_mq_request_completed(req)) { |
7776db1c KB |
1363 | dev_warn(dev->ctrl.device, |
1364 | "I/O %d QID %d timeout, completion polled\n", | |
1365 | req->tag, nvmeq->qid); | |
db8c48e4 | 1366 | return BLK_EH_DONE; |
7776db1c KB |
1367 | } |
1368 | ||
31c7c7d2 | 1369 | /* |
fd634f41 CH |
1370 | * Shutdown immediately if controller times out while starting. The |
1371 | * reset work will see the pci device disabled when it gets the forced | |
1372 | * cancellation error. All outstanding requests are completed on | |
db8c48e4 | 1373 | * shutdown, so we return BLK_EH_DONE. |
fd634f41 | 1374 | */ |
4244140d KB |
1375 | switch (dev->ctrl.state) { |
1376 | case NVME_CTRL_CONNECTING: | |
2036f726 | 1377 | nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DELETING); |
df561f66 | 1378 | fallthrough; |
2036f726 | 1379 | case NVME_CTRL_DELETING: |
b9cac43c | 1380 | dev_warn_ratelimited(dev->ctrl.device, |
fd634f41 CH |
1381 | "I/O %d QID %d timeout, disable controller\n", |
1382 | req->tag, nvmeq->qid); | |
27fa9bc5 | 1383 | nvme_req(req)->flags |= NVME_REQ_CANCELLED; |
7ad92f65 | 1384 | nvme_dev_disable(dev, true); |
db8c48e4 | 1385 | return BLK_EH_DONE; |
39a9dd81 KB |
1386 | case NVME_CTRL_RESETTING: |
1387 | return BLK_EH_RESET_TIMER; | |
4244140d KB |
1388 | default: |
1389 | break; | |
c30341dc KB |
1390 | } |
1391 | ||
fd634f41 | 1392 | /* |
ee0d96d3 BW |
1393 | * Shutdown the controller immediately and schedule a reset if the |
1394 | * command was already aborted once before and still hasn't been | |
1395 | * returned to the driver, or if this is the admin queue. | |
31c7c7d2 | 1396 | */ |
f4800d6d | 1397 | if (!nvmeq->qid || iod->aborted) { |
1b3c47c1 | 1398 | dev_warn(dev->ctrl.device, |
e1569a16 KB |
1399 | "I/O %d QID %d timeout, reset controller\n", |
1400 | req->tag, nvmeq->qid); | |
7ad92f65 | 1401 | nvme_req(req)->flags |= NVME_REQ_CANCELLED; |
a5cdb68c | 1402 | nvme_dev_disable(dev, false); |
d86c4d8e | 1403 | nvme_reset_ctrl(&dev->ctrl); |
c30341dc | 1404 | |
db8c48e4 | 1405 | return BLK_EH_DONE; |
c30341dc | 1406 | } |
c30341dc | 1407 | |
e7a2a87d | 1408 | if (atomic_dec_return(&dev->ctrl.abort_limit) < 0) { |
6bf25d16 | 1409 | atomic_inc(&dev->ctrl.abort_limit); |
31c7c7d2 | 1410 | return BLK_EH_RESET_TIMER; |
6bf25d16 | 1411 | } |
52da4f3f | 1412 | iod->aborted = true; |
a4aea562 | 1413 | |
c30341dc | 1414 | cmd.abort.opcode = nvme_admin_abort_cmd; |
85f74acf | 1415 | cmd.abort.cid = nvme_cid(req); |
c30341dc | 1416 | cmd.abort.sqid = cpu_to_le16(nvmeq->qid); |
c30341dc | 1417 | |
1b3c47c1 | 1418 | dev_warn(nvmeq->dev->ctrl.device, |
86141440 CH |
1419 | "I/O %d (%s) QID %d timeout, aborting\n", |
1420 | req->tag, | |
1421 | nvme_get_opcode_str(nvme_req(req)->cmd->common.opcode), | |
1422 | nvmeq->qid); | |
e7a2a87d | 1423 | |
e559398f CH |
1424 | abort_req = blk_mq_alloc_request(dev->ctrl.admin_q, nvme_req_op(&cmd), |
1425 | BLK_MQ_REQ_NOWAIT); | |
e7a2a87d CH |
1426 | if (IS_ERR(abort_req)) { |
1427 | atomic_inc(&dev->ctrl.abort_limit); | |
1428 | return BLK_EH_RESET_TIMER; | |
1429 | } | |
e559398f | 1430 | nvme_init_request(abort_req, &cmd); |
e7a2a87d | 1431 | |
e2e53086 | 1432 | abort_req->end_io = abort_endio; |
e7a2a87d | 1433 | abort_req->end_io_data = NULL; |
128126a7 | 1434 | abort_req->rq_flags |= RQF_QUIET; |
e2e53086 | 1435 | blk_execute_rq_nowait(abort_req, false); |
c30341dc | 1436 | |
31c7c7d2 CH |
1437 | /* |
1438 | * The aborted req will be completed on receiving the abort req. | |
1439 | * We enable the timer again. If hit twice, it'll cause a device reset, | |
1440 | * as the device then is in a faulty state. | |
1441 | */ | |
1442 | return BLK_EH_RESET_TIMER; | |
c30341dc KB |
1443 | } |
1444 | ||
a4aea562 MB |
1445 | static void nvme_free_queue(struct nvme_queue *nvmeq) |
1446 | { | |
8a1d09a6 | 1447 | dma_free_coherent(nvmeq->dev->dev, CQ_SIZE(nvmeq), |
9e866774 | 1448 | (void *)nvmeq->cqes, nvmeq->cq_dma_addr); |
63223078 CH |
1449 | if (!nvmeq->sq_cmds) |
1450 | return; | |
0f238ff5 | 1451 | |
63223078 | 1452 | if (test_and_clear_bit(NVMEQ_SQ_CMB, &nvmeq->flags)) { |
88a041f4 | 1453 | pci_free_p2pmem(to_pci_dev(nvmeq->dev->dev), |
8a1d09a6 | 1454 | nvmeq->sq_cmds, SQ_SIZE(nvmeq)); |
63223078 | 1455 | } else { |
8a1d09a6 | 1456 | dma_free_coherent(nvmeq->dev->dev, SQ_SIZE(nvmeq), |
63223078 | 1457 | nvmeq->sq_cmds, nvmeq->sq_dma_addr); |
0f238ff5 | 1458 | } |
9e866774 MW |
1459 | } |
1460 | ||
a1a5ef99 | 1461 | static void nvme_free_queues(struct nvme_dev *dev, int lowest) |
22404274 KB |
1462 | { |
1463 | int i; | |
1464 | ||
d858e5f0 | 1465 | for (i = dev->ctrl.queue_count - 1; i >= lowest; i--) { |
d858e5f0 | 1466 | dev->ctrl.queue_count--; |
147b27e4 | 1467 | nvme_free_queue(&dev->queues[i]); |
121c7ad4 | 1468 | } |
22404274 KB |
1469 | } |
1470 | ||
10981f23 | 1471 | static void nvme_suspend_queue(struct nvme_dev *dev, unsigned int qid) |
b60503ba | 1472 | { |
10981f23 CH |
1473 | struct nvme_queue *nvmeq = &dev->queues[qid]; |
1474 | ||
4e224106 | 1475 | if (!test_and_clear_bit(NVMEQ_ENABLED, &nvmeq->flags)) |
10981f23 | 1476 | return; |
a09115b2 | 1477 | |
4e224106 | 1478 | /* ensure that nvme_queue_rq() sees NVMEQ_ENABLED cleared */ |
d1f06f4a | 1479 | mb(); |
a09115b2 | 1480 | |
4e224106 | 1481 | nvmeq->dev->online_queues--; |
1c63dc66 | 1482 | if (!nvmeq->qid && nvmeq->dev->ctrl.admin_q) |
9f27bd70 | 1483 | nvme_quiesce_admin_queue(&nvmeq->dev->ctrl); |
7c349dde | 1484 | if (!test_and_clear_bit(NVMEQ_POLLED, &nvmeq->flags)) |
10981f23 | 1485 | pci_free_irq(to_pci_dev(dev->dev), nvmeq->cq_vector, nvmeq); |
4d115420 | 1486 | } |
b60503ba | 1487 | |
8fae268b KB |
1488 | static void nvme_suspend_io_queues(struct nvme_dev *dev) |
1489 | { | |
1490 | int i; | |
1491 | ||
1492 | for (i = dev->ctrl.queue_count - 1; i > 0; i--) | |
10981f23 | 1493 | nvme_suspend_queue(dev, i); |
8fae268b KB |
1494 | } |
1495 | ||
fa46c6fb KB |
1496 | /* |
1497 | * Called only on a device that has been disabled and after all other threads | |
9210c075 DZ |
1498 | * that can check this device's completion queues have synced, except |
1499 | * nvme_poll(). This is the last chance for the driver to see a natural | |
1500 | * completion before nvme_cancel_request() terminates all incomplete requests. | |
fa46c6fb KB |
1501 | */ |
1502 | static void nvme_reap_pending_cqes(struct nvme_dev *dev) | |
1503 | { | |
fa46c6fb KB |
1504 | int i; |
1505 | ||
9210c075 DZ |
1506 | for (i = dev->ctrl.queue_count - 1; i > 0; i--) { |
1507 | spin_lock(&dev->queues[i].cq_poll_lock); | |
c234a653 | 1508 | nvme_poll_cq(&dev->queues[i], NULL); |
9210c075 DZ |
1509 | spin_unlock(&dev->queues[i].cq_poll_lock); |
1510 | } | |
fa46c6fb KB |
1511 | } |
1512 | ||
8ffaadf7 JD |
1513 | static int nvme_cmb_qdepth(struct nvme_dev *dev, int nr_io_queues, |
1514 | int entry_size) | |
1515 | { | |
1516 | int q_depth = dev->q_depth; | |
5fd4ce1b | 1517 | unsigned q_size_aligned = roundup(q_depth * entry_size, |
6c3c05b0 | 1518 | NVME_CTRL_PAGE_SIZE); |
8ffaadf7 JD |
1519 | |
1520 | if (q_size_aligned * nr_io_queues > dev->cmb_size) { | |
c45f5c99 | 1521 | u64 mem_per_q = div_u64(dev->cmb_size, nr_io_queues); |
4e523547 | 1522 | |
6c3c05b0 | 1523 | mem_per_q = round_down(mem_per_q, NVME_CTRL_PAGE_SIZE); |
c45f5c99 | 1524 | q_depth = div_u64(mem_per_q, entry_size); |
8ffaadf7 JD |
1525 | |
1526 | /* | |
1527 | * Ensure the reduced q_depth is above some threshold where it | |
1528 | * would be better to map queues in system memory with the | |
1529 | * original depth | |
1530 | */ | |
1531 | if (q_depth < 64) | |
1532 | return -ENOMEM; | |
1533 | } | |
1534 | ||
1535 | return q_depth; | |
1536 | } | |
1537 | ||
1538 | static int nvme_alloc_sq_cmds(struct nvme_dev *dev, struct nvme_queue *nvmeq, | |
8a1d09a6 | 1539 | int qid) |
8ffaadf7 | 1540 | { |
0f238ff5 LG |
1541 | struct pci_dev *pdev = to_pci_dev(dev->dev); |
1542 | ||
1543 | if (qid && dev->cmb_use_sqes && (dev->cmbsz & NVME_CMBSZ_SQS)) { | |
8a1d09a6 | 1544 | nvmeq->sq_cmds = pci_alloc_p2pmem(pdev, SQ_SIZE(nvmeq)); |
bfac8e9f AM |
1545 | if (nvmeq->sq_cmds) { |
1546 | nvmeq->sq_dma_addr = pci_p2pmem_virt_to_bus(pdev, | |
1547 | nvmeq->sq_cmds); | |
1548 | if (nvmeq->sq_dma_addr) { | |
1549 | set_bit(NVMEQ_SQ_CMB, &nvmeq->flags); | |
1550 | return 0; | |
1551 | } | |
1552 | ||
8a1d09a6 | 1553 | pci_free_p2pmem(pdev, nvmeq->sq_cmds, SQ_SIZE(nvmeq)); |
63223078 | 1554 | } |
0f238ff5 | 1555 | } |
8ffaadf7 | 1556 | |
8a1d09a6 | 1557 | nvmeq->sq_cmds = dma_alloc_coherent(dev->dev, SQ_SIZE(nvmeq), |
63223078 | 1558 | &nvmeq->sq_dma_addr, GFP_KERNEL); |
815c6704 KB |
1559 | if (!nvmeq->sq_cmds) |
1560 | return -ENOMEM; | |
8ffaadf7 JD |
1561 | return 0; |
1562 | } | |
1563 | ||
a6ff7262 | 1564 | static int nvme_alloc_queue(struct nvme_dev *dev, int qid, int depth) |
b60503ba | 1565 | { |
147b27e4 | 1566 | struct nvme_queue *nvmeq = &dev->queues[qid]; |
b60503ba | 1567 | |
62314e40 KB |
1568 | if (dev->ctrl.queue_count > qid) |
1569 | return 0; | |
b60503ba | 1570 | |
c1e0cc7e | 1571 | nvmeq->sqes = qid ? dev->io_sqes : NVME_ADM_SQES; |
8a1d09a6 BH |
1572 | nvmeq->q_depth = depth; |
1573 | nvmeq->cqes = dma_alloc_coherent(dev->dev, CQ_SIZE(nvmeq), | |
750afb08 | 1574 | &nvmeq->cq_dma_addr, GFP_KERNEL); |
b60503ba MW |
1575 | if (!nvmeq->cqes) |
1576 | goto free_nvmeq; | |
b60503ba | 1577 | |
8a1d09a6 | 1578 | if (nvme_alloc_sq_cmds(dev, nvmeq, qid)) |
b60503ba MW |
1579 | goto free_cqdma; |
1580 | ||
091b6092 | 1581 | nvmeq->dev = dev; |
1ab0cd69 | 1582 | spin_lock_init(&nvmeq->sq_lock); |
3a7afd8e | 1583 | spin_lock_init(&nvmeq->cq_poll_lock); |
b60503ba | 1584 | nvmeq->cq_head = 0; |
82123460 | 1585 | nvmeq->cq_phase = 1; |
b80d5ccc | 1586 | nvmeq->q_db = &dev->dbs[qid * 2 * dev->db_stride]; |
c30341dc | 1587 | nvmeq->qid = qid; |
d858e5f0 | 1588 | dev->ctrl.queue_count++; |
36a7e993 | 1589 | |
147b27e4 | 1590 | return 0; |
b60503ba MW |
1591 | |
1592 | free_cqdma: | |
8a1d09a6 BH |
1593 | dma_free_coherent(dev->dev, CQ_SIZE(nvmeq), (void *)nvmeq->cqes, |
1594 | nvmeq->cq_dma_addr); | |
b60503ba | 1595 | free_nvmeq: |
147b27e4 | 1596 | return -ENOMEM; |
b60503ba MW |
1597 | } |
1598 | ||
dca51e78 | 1599 | static int queue_request_irq(struct nvme_queue *nvmeq) |
3001082c | 1600 | { |
0ff199cb CH |
1601 | struct pci_dev *pdev = to_pci_dev(nvmeq->dev->dev); |
1602 | int nr = nvmeq->dev->ctrl.instance; | |
1603 | ||
1604 | if (use_threaded_interrupts) { | |
1605 | return pci_request_irq(pdev, nvmeq->cq_vector, nvme_irq_check, | |
1606 | nvme_irq, nvmeq, "nvme%dq%d", nr, nvmeq->qid); | |
1607 | } else { | |
1608 | return pci_request_irq(pdev, nvmeq->cq_vector, nvme_irq, | |
1609 | NULL, nvmeq, "nvme%dq%d", nr, nvmeq->qid); | |
1610 | } | |
3001082c MW |
1611 | } |
1612 | ||
22404274 | 1613 | static void nvme_init_queue(struct nvme_queue *nvmeq, u16 qid) |
b60503ba | 1614 | { |
22404274 | 1615 | struct nvme_dev *dev = nvmeq->dev; |
b60503ba | 1616 | |
22404274 | 1617 | nvmeq->sq_tail = 0; |
38210800 | 1618 | nvmeq->last_sq_tail = 0; |
22404274 KB |
1619 | nvmeq->cq_head = 0; |
1620 | nvmeq->cq_phase = 1; | |
b80d5ccc | 1621 | nvmeq->q_db = &dev->dbs[qid * 2 * dev->db_stride]; |
8a1d09a6 | 1622 | memset((void *)nvmeq->cqes, 0, CQ_SIZE(nvmeq)); |
f9f38e33 | 1623 | nvme_dbbuf_init(dev, nvmeq, qid); |
42f61420 | 1624 | dev->online_queues++; |
3a7afd8e | 1625 | wmb(); /* ensure the first interrupt sees the initialization */ |
22404274 KB |
1626 | } |
1627 | ||
e4b9852a CC |
1628 | /* |
1629 | * Try getting shutdown_lock while setting up IO queues. | |
1630 | */ | |
1631 | static int nvme_setup_io_queues_trylock(struct nvme_dev *dev) | |
1632 | { | |
1633 | /* | |
1634 | * Give up if the lock is being held by nvme_dev_disable. | |
1635 | */ | |
1636 | if (!mutex_trylock(&dev->shutdown_lock)) | |
1637 | return -ENODEV; | |
1638 | ||
1639 | /* | |
1640 | * Controller is in wrong state, fail early. | |
1641 | */ | |
1642 | if (dev->ctrl.state != NVME_CTRL_CONNECTING) { | |
1643 | mutex_unlock(&dev->shutdown_lock); | |
1644 | return -ENODEV; | |
1645 | } | |
1646 | ||
1647 | return 0; | |
1648 | } | |
1649 | ||
4b04cc6a | 1650 | static int nvme_create_queue(struct nvme_queue *nvmeq, int qid, bool polled) |
22404274 KB |
1651 | { |
1652 | struct nvme_dev *dev = nvmeq->dev; | |
1653 | int result; | |
7c349dde | 1654 | u16 vector = 0; |
3f85d50b | 1655 | |
d1ed6aa1 CH |
1656 | clear_bit(NVMEQ_DELETE_ERROR, &nvmeq->flags); |
1657 | ||
22b55601 KB |
1658 | /* |
1659 | * A queue's vector matches the queue identifier unless the controller | |
1660 | * has only one vector available. | |
1661 | */ | |
4b04cc6a JA |
1662 | if (!polled) |
1663 | vector = dev->num_vecs == 1 ? 0 : qid; | |
1664 | else | |
7c349dde | 1665 | set_bit(NVMEQ_POLLED, &nvmeq->flags); |
4b04cc6a | 1666 | |
a8e3e0bb | 1667 | result = adapter_alloc_cq(dev, qid, nvmeq, vector); |
ded45505 KB |
1668 | if (result) |
1669 | return result; | |
b60503ba MW |
1670 | |
1671 | result = adapter_alloc_sq(dev, qid, nvmeq); | |
1672 | if (result < 0) | |
ded45505 | 1673 | return result; |
c80b36cd | 1674 | if (result) |
b60503ba MW |
1675 | goto release_cq; |
1676 | ||
a8e3e0bb | 1677 | nvmeq->cq_vector = vector; |
4b04cc6a | 1678 | |
e4b9852a CC |
1679 | result = nvme_setup_io_queues_trylock(dev); |
1680 | if (result) | |
1681 | return result; | |
1682 | nvme_init_queue(nvmeq, qid); | |
7c349dde | 1683 | if (!polled) { |
4b04cc6a JA |
1684 | result = queue_request_irq(nvmeq); |
1685 | if (result < 0) | |
1686 | goto release_sq; | |
1687 | } | |
b60503ba | 1688 | |
4e224106 | 1689 | set_bit(NVMEQ_ENABLED, &nvmeq->flags); |
e4b9852a | 1690 | mutex_unlock(&dev->shutdown_lock); |
22404274 | 1691 | return result; |
b60503ba | 1692 | |
a8e3e0bb | 1693 | release_sq: |
f25a2dfc | 1694 | dev->online_queues--; |
e4b9852a | 1695 | mutex_unlock(&dev->shutdown_lock); |
b60503ba | 1696 | adapter_delete_sq(dev, qid); |
a8e3e0bb | 1697 | release_cq: |
b60503ba | 1698 | adapter_delete_cq(dev, qid); |
22404274 | 1699 | return result; |
b60503ba MW |
1700 | } |
1701 | ||
f363b089 | 1702 | static const struct blk_mq_ops nvme_mq_admin_ops = { |
d29ec824 | 1703 | .queue_rq = nvme_queue_rq, |
77f02a7a | 1704 | .complete = nvme_pci_complete_rq, |
a4aea562 | 1705 | .init_hctx = nvme_admin_init_hctx, |
e559398f | 1706 | .init_request = nvme_pci_init_request, |
a4aea562 MB |
1707 | .timeout = nvme_timeout, |
1708 | }; | |
1709 | ||
f363b089 | 1710 | static const struct blk_mq_ops nvme_mq_ops = { |
376f7ef8 | 1711 | .queue_rq = nvme_queue_rq, |
d62cbcf6 | 1712 | .queue_rqs = nvme_queue_rqs, |
376f7ef8 CH |
1713 | .complete = nvme_pci_complete_rq, |
1714 | .commit_rqs = nvme_commit_rqs, | |
1715 | .init_hctx = nvme_init_hctx, | |
e559398f | 1716 | .init_request = nvme_pci_init_request, |
376f7ef8 CH |
1717 | .map_queues = nvme_pci_map_queues, |
1718 | .timeout = nvme_timeout, | |
1719 | .poll = nvme_poll, | |
dabcefab JA |
1720 | }; |
1721 | ||
ea191d2f KB |
1722 | static void nvme_dev_remove_admin(struct nvme_dev *dev) |
1723 | { | |
1c63dc66 | 1724 | if (dev->ctrl.admin_q && !blk_queue_dying(dev->ctrl.admin_q)) { |
69d9a99c KB |
1725 | /* |
1726 | * If the controller was reset during removal, it's possible | |
1727 | * user requests may be waiting on a stopped queue. Start the | |
1728 | * queue to flush these to completion. | |
1729 | */ | |
9f27bd70 | 1730 | nvme_unquiesce_admin_queue(&dev->ctrl); |
6f8191fd | 1731 | blk_mq_destroy_queue(dev->ctrl.admin_q); |
96ef1be5 | 1732 | blk_put_queue(dev->ctrl.admin_q); |
ea191d2f KB |
1733 | blk_mq_free_tag_set(&dev->admin_tagset); |
1734 | } | |
1735 | } | |
1736 | ||
f91b727c | 1737 | static int nvme_pci_alloc_admin_tag_set(struct nvme_dev *dev) |
a4aea562 | 1738 | { |
f91b727c | 1739 | struct blk_mq_tag_set *set = &dev->admin_tagset; |
e3e9d50c | 1740 | |
f91b727c CH |
1741 | set->ops = &nvme_mq_admin_ops; |
1742 | set->nr_hw_queues = 1; | |
a4aea562 | 1743 | |
f91b727c CH |
1744 | set->queue_depth = NVME_AQ_MQ_TAG_DEPTH; |
1745 | set->timeout = NVME_ADMIN_TIMEOUT; | |
1746 | set->numa_node = dev->ctrl.numa_node; | |
1747 | set->cmd_size = sizeof(struct nvme_iod); | |
1748 | set->flags = BLK_MQ_F_NO_SCHED; | |
1749 | set->driver_data = dev; | |
a4aea562 | 1750 | |
f91b727c CH |
1751 | if (blk_mq_alloc_tag_set(set)) |
1752 | return -ENOMEM; | |
1753 | dev->ctrl.admin_tagset = set; | |
a4aea562 | 1754 | |
f91b727c CH |
1755 | dev->ctrl.admin_q = blk_mq_init_queue(set); |
1756 | if (IS_ERR(dev->ctrl.admin_q)) { | |
1757 | blk_mq_free_tag_set(set); | |
1758 | dev->ctrl.admin_q = NULL; | |
1759 | return -ENOMEM; | |
1760 | } | |
a4aea562 MB |
1761 | return 0; |
1762 | } | |
1763 | ||
97f6ef64 XY |
1764 | static unsigned long db_bar_size(struct nvme_dev *dev, unsigned nr_io_queues) |
1765 | { | |
1766 | return NVME_REG_DBS + ((nr_io_queues + 1) * 8 * dev->db_stride); | |
1767 | } | |
1768 | ||
1769 | static int nvme_remap_bar(struct nvme_dev *dev, unsigned long size) | |
1770 | { | |
1771 | struct pci_dev *pdev = to_pci_dev(dev->dev); | |
1772 | ||
1773 | if (size <= dev->bar_mapped_size) | |
1774 | return 0; | |
1775 | if (size > pci_resource_len(pdev, 0)) | |
1776 | return -ENOMEM; | |
1777 | if (dev->bar) | |
1778 | iounmap(dev->bar); | |
1779 | dev->bar = ioremap(pci_resource_start(pdev, 0), size); | |
1780 | if (!dev->bar) { | |
1781 | dev->bar_mapped_size = 0; | |
1782 | return -ENOMEM; | |
1783 | } | |
1784 | dev->bar_mapped_size = size; | |
1785 | dev->dbs = dev->bar + NVME_REG_DBS; | |
1786 | ||
1787 | return 0; | |
1788 | } | |
1789 | ||
01ad0990 | 1790 | static int nvme_pci_configure_admin_queue(struct nvme_dev *dev) |
b60503ba | 1791 | { |
ba47e386 | 1792 | int result; |
b60503ba MW |
1793 | u32 aqa; |
1794 | struct nvme_queue *nvmeq; | |
1795 | ||
97f6ef64 XY |
1796 | result = nvme_remap_bar(dev, db_bar_size(dev, 0)); |
1797 | if (result < 0) | |
1798 | return result; | |
1799 | ||
8ef2074d | 1800 | dev->subsystem = readl(dev->bar + NVME_REG_VS) >= NVME_VS(1, 1, 0) ? |
20d0dfe6 | 1801 | NVME_CAP_NSSRC(dev->ctrl.cap) : 0; |
dfbac8c7 | 1802 | |
7a67cbea CH |
1803 | if (dev->subsystem && |
1804 | (readl(dev->bar + NVME_REG_CSTS) & NVME_CSTS_NSSRO)) | |
1805 | writel(NVME_CSTS_NSSRO, dev->bar + NVME_REG_CSTS); | |
dfbac8c7 | 1806 | |
285b6e9b CH |
1807 | /* |
1808 | * If the device has been passed off to us in an enabled state, just | |
1809 | * clear the enabled bit. The spec says we should set the 'shutdown | |
1810 | * notification bits', but doing so may cause the device to complete | |
1811 | * commands to the admin queue ... and we don't know what memory that | |
1812 | * might be pointing at! | |
1813 | */ | |
1814 | result = nvme_disable_ctrl(&dev->ctrl, false); | |
ba47e386 MW |
1815 | if (result < 0) |
1816 | return result; | |
b60503ba | 1817 | |
a6ff7262 | 1818 | result = nvme_alloc_queue(dev, 0, NVME_AQ_DEPTH); |
147b27e4 SG |
1819 | if (result) |
1820 | return result; | |
b60503ba | 1821 | |
635333e4 MG |
1822 | dev->ctrl.numa_node = dev_to_node(dev->dev); |
1823 | ||
147b27e4 | 1824 | nvmeq = &dev->queues[0]; |
b60503ba MW |
1825 | aqa = nvmeq->q_depth - 1; |
1826 | aqa |= aqa << 16; | |
1827 | ||
7a67cbea CH |
1828 | writel(aqa, dev->bar + NVME_REG_AQA); |
1829 | lo_hi_writeq(nvmeq->sq_dma_addr, dev->bar + NVME_REG_ASQ); | |
1830 | lo_hi_writeq(nvmeq->cq_dma_addr, dev->bar + NVME_REG_ACQ); | |
b60503ba | 1831 | |
c0f2f45b | 1832 | result = nvme_enable_ctrl(&dev->ctrl); |
025c557a | 1833 | if (result) |
d4875622 | 1834 | return result; |
a4aea562 | 1835 | |
2b25d981 | 1836 | nvmeq->cq_vector = 0; |
161b8be2 | 1837 | nvme_init_queue(nvmeq, 0); |
dca51e78 | 1838 | result = queue_request_irq(nvmeq); |
758dd7fd | 1839 | if (result) { |
7c349dde | 1840 | dev->online_queues--; |
d4875622 | 1841 | return result; |
758dd7fd | 1842 | } |
025c557a | 1843 | |
4e224106 | 1844 | set_bit(NVMEQ_ENABLED, &nvmeq->flags); |
b60503ba MW |
1845 | return result; |
1846 | } | |
1847 | ||
749941f2 | 1848 | static int nvme_create_io_queues(struct nvme_dev *dev) |
42f61420 | 1849 | { |
4b04cc6a | 1850 | unsigned i, max, rw_queues; |
749941f2 | 1851 | int ret = 0; |
42f61420 | 1852 | |
d858e5f0 | 1853 | for (i = dev->ctrl.queue_count; i <= dev->max_qid; i++) { |
a6ff7262 | 1854 | if (nvme_alloc_queue(dev, i, dev->q_depth)) { |
749941f2 | 1855 | ret = -ENOMEM; |
42f61420 | 1856 | break; |
749941f2 CH |
1857 | } |
1858 | } | |
42f61420 | 1859 | |
d858e5f0 | 1860 | max = min(dev->max_qid, dev->ctrl.queue_count - 1); |
e20ba6e1 CH |
1861 | if (max != 1 && dev->io_queues[HCTX_TYPE_POLL]) { |
1862 | rw_queues = dev->io_queues[HCTX_TYPE_DEFAULT] + | |
1863 | dev->io_queues[HCTX_TYPE_READ]; | |
4b04cc6a JA |
1864 | } else { |
1865 | rw_queues = max; | |
1866 | } | |
1867 | ||
949928c1 | 1868 | for (i = dev->online_queues; i <= max; i++) { |
4b04cc6a JA |
1869 | bool polled = i > rw_queues; |
1870 | ||
1871 | ret = nvme_create_queue(&dev->queues[i], i, polled); | |
d4875622 | 1872 | if (ret) |
42f61420 | 1873 | break; |
27e8166c | 1874 | } |
749941f2 CH |
1875 | |
1876 | /* | |
1877 | * Ignore failing Create SQ/CQ commands, we can continue with less | |
8adb8c14 MI |
1878 | * than the desired amount of queues, and even a controller without |
1879 | * I/O queues can still be used to issue admin commands. This might | |
749941f2 CH |
1880 | * be useful to upgrade a buggy firmware for example. |
1881 | */ | |
1882 | return ret >= 0 ? 0 : ret; | |
b60503ba MW |
1883 | } |
1884 | ||
88de4598 | 1885 | static u64 nvme_cmb_size_unit(struct nvme_dev *dev) |
8ffaadf7 | 1886 | { |
88de4598 CH |
1887 | u8 szu = (dev->cmbsz >> NVME_CMBSZ_SZU_SHIFT) & NVME_CMBSZ_SZU_MASK; |
1888 | ||
1889 | return 1ULL << (12 + 4 * szu); | |
1890 | } | |
1891 | ||
1892 | static u32 nvme_cmb_size(struct nvme_dev *dev) | |
1893 | { | |
1894 | return (dev->cmbsz >> NVME_CMBSZ_SZ_SHIFT) & NVME_CMBSZ_SZ_MASK; | |
1895 | } | |
1896 | ||
f65efd6d | 1897 | static void nvme_map_cmb(struct nvme_dev *dev) |
8ffaadf7 | 1898 | { |
88de4598 | 1899 | u64 size, offset; |
8ffaadf7 JD |
1900 | resource_size_t bar_size; |
1901 | struct pci_dev *pdev = to_pci_dev(dev->dev); | |
8969f1f8 | 1902 | int bar; |
8ffaadf7 | 1903 | |
9fe5c59f KB |
1904 | if (dev->cmb_size) |
1905 | return; | |
1906 | ||
20d3bb92 KJ |
1907 | if (NVME_CAP_CMBS(dev->ctrl.cap)) |
1908 | writel(NVME_CMBMSC_CRE, dev->bar + NVME_REG_CMBMSC); | |
1909 | ||
7a67cbea | 1910 | dev->cmbsz = readl(dev->bar + NVME_REG_CMBSZ); |
f65efd6d CH |
1911 | if (!dev->cmbsz) |
1912 | return; | |
202021c1 | 1913 | dev->cmbloc = readl(dev->bar + NVME_REG_CMBLOC); |
8ffaadf7 | 1914 | |
88de4598 CH |
1915 | size = nvme_cmb_size_unit(dev) * nvme_cmb_size(dev); |
1916 | offset = nvme_cmb_size_unit(dev) * NVME_CMB_OFST(dev->cmbloc); | |
8969f1f8 CH |
1917 | bar = NVME_CMB_BIR(dev->cmbloc); |
1918 | bar_size = pci_resource_len(pdev, bar); | |
8ffaadf7 JD |
1919 | |
1920 | if (offset > bar_size) | |
f65efd6d | 1921 | return; |
8ffaadf7 | 1922 | |
20d3bb92 KJ |
1923 | /* |
1924 | * Tell the controller about the host side address mapping the CMB, | |
1925 | * and enable CMB decoding for the NVMe 1.4+ scheme: | |
1926 | */ | |
1927 | if (NVME_CAP_CMBS(dev->ctrl.cap)) { | |
1928 | hi_lo_writeq(NVME_CMBMSC_CRE | NVME_CMBMSC_CMSE | | |
1929 | (pci_bus_address(pdev, bar) + offset), | |
1930 | dev->bar + NVME_REG_CMBMSC); | |
1931 | } | |
1932 | ||
8ffaadf7 JD |
1933 | /* |
1934 | * Controllers may support a CMB size larger than their BAR, | |
1935 | * for example, due to being behind a bridge. Reduce the CMB to | |
1936 | * the reported size of the BAR | |
1937 | */ | |
1938 | if (size > bar_size - offset) | |
1939 | size = bar_size - offset; | |
1940 | ||
0f238ff5 LG |
1941 | if (pci_p2pdma_add_resource(pdev, bar, size, offset)) { |
1942 | dev_warn(dev->ctrl.device, | |
1943 | "failed to register the CMB\n"); | |
f65efd6d | 1944 | return; |
0f238ff5 LG |
1945 | } |
1946 | ||
8ffaadf7 | 1947 | dev->cmb_size = size; |
0f238ff5 LG |
1948 | dev->cmb_use_sqes = use_cmb_sqes && (dev->cmbsz & NVME_CMBSZ_SQS); |
1949 | ||
1950 | if ((dev->cmbsz & (NVME_CMBSZ_WDS | NVME_CMBSZ_RDS)) == | |
1951 | (NVME_CMBSZ_WDS | NVME_CMBSZ_RDS)) | |
1952 | pci_p2pmem_publish(pdev, true); | |
8ffaadf7 JD |
1953 | } |
1954 | ||
87ad72a5 CH |
1955 | static int nvme_set_host_mem(struct nvme_dev *dev, u32 bits) |
1956 | { | |
6c3c05b0 | 1957 | u32 host_mem_size = dev->host_mem_size >> NVME_CTRL_PAGE_SHIFT; |
4033f35d | 1958 | u64 dma_addr = dev->host_mem_descs_dma; |
f66e2804 | 1959 | struct nvme_command c = { }; |
87ad72a5 CH |
1960 | int ret; |
1961 | ||
87ad72a5 CH |
1962 | c.features.opcode = nvme_admin_set_features; |
1963 | c.features.fid = cpu_to_le32(NVME_FEAT_HOST_MEM_BUF); | |
1964 | c.features.dword11 = cpu_to_le32(bits); | |
6c3c05b0 | 1965 | c.features.dword12 = cpu_to_le32(host_mem_size); |
87ad72a5 CH |
1966 | c.features.dword13 = cpu_to_le32(lower_32_bits(dma_addr)); |
1967 | c.features.dword14 = cpu_to_le32(upper_32_bits(dma_addr)); | |
1968 | c.features.dword15 = cpu_to_le32(dev->nr_host_mem_descs); | |
1969 | ||
1970 | ret = nvme_submit_sync_cmd(dev->ctrl.admin_q, &c, NULL, 0); | |
1971 | if (ret) { | |
1972 | dev_warn(dev->ctrl.device, | |
1973 | "failed to set host mem (err %d, flags %#x).\n", | |
1974 | ret, bits); | |
a5df5e79 KB |
1975 | } else |
1976 | dev->hmb = bits & NVME_HOST_MEM_ENABLE; | |
1977 | ||
87ad72a5 CH |
1978 | return ret; |
1979 | } | |
1980 | ||
1981 | static void nvme_free_host_mem(struct nvme_dev *dev) | |
1982 | { | |
1983 | int i; | |
1984 | ||
1985 | for (i = 0; i < dev->nr_host_mem_descs; i++) { | |
1986 | struct nvme_host_mem_buf_desc *desc = &dev->host_mem_descs[i]; | |
6c3c05b0 | 1987 | size_t size = le32_to_cpu(desc->size) * NVME_CTRL_PAGE_SIZE; |
87ad72a5 | 1988 | |
cc667f6d LD |
1989 | dma_free_attrs(dev->dev, size, dev->host_mem_desc_bufs[i], |
1990 | le64_to_cpu(desc->addr), | |
1991 | DMA_ATTR_NO_KERNEL_MAPPING | DMA_ATTR_NO_WARN); | |
87ad72a5 CH |
1992 | } |
1993 | ||
1994 | kfree(dev->host_mem_desc_bufs); | |
1995 | dev->host_mem_desc_bufs = NULL; | |
4033f35d CH |
1996 | dma_free_coherent(dev->dev, |
1997 | dev->nr_host_mem_descs * sizeof(*dev->host_mem_descs), | |
1998 | dev->host_mem_descs, dev->host_mem_descs_dma); | |
87ad72a5 | 1999 | dev->host_mem_descs = NULL; |
7e5dd57e | 2000 | dev->nr_host_mem_descs = 0; |
87ad72a5 CH |
2001 | } |
2002 | ||
92dc6895 CH |
2003 | static int __nvme_alloc_host_mem(struct nvme_dev *dev, u64 preferred, |
2004 | u32 chunk_size) | |
9d713c2b | 2005 | { |
87ad72a5 | 2006 | struct nvme_host_mem_buf_desc *descs; |
92dc6895 | 2007 | u32 max_entries, len; |
4033f35d | 2008 | dma_addr_t descs_dma; |
2ee0e4ed | 2009 | int i = 0; |
87ad72a5 | 2010 | void **bufs; |
6fbcde66 | 2011 | u64 size, tmp; |
87ad72a5 | 2012 | |
87ad72a5 CH |
2013 | tmp = (preferred + chunk_size - 1); |
2014 | do_div(tmp, chunk_size); | |
2015 | max_entries = tmp; | |
044a9df1 CH |
2016 | |
2017 | if (dev->ctrl.hmmaxd && dev->ctrl.hmmaxd < max_entries) | |
2018 | max_entries = dev->ctrl.hmmaxd; | |
2019 | ||
750afb08 LC |
2020 | descs = dma_alloc_coherent(dev->dev, max_entries * sizeof(*descs), |
2021 | &descs_dma, GFP_KERNEL); | |
87ad72a5 CH |
2022 | if (!descs) |
2023 | goto out; | |
2024 | ||
2025 | bufs = kcalloc(max_entries, sizeof(*bufs), GFP_KERNEL); | |
2026 | if (!bufs) | |
2027 | goto out_free_descs; | |
2028 | ||
244a8fe4 | 2029 | for (size = 0; size < preferred && i < max_entries; size += len) { |
87ad72a5 CH |
2030 | dma_addr_t dma_addr; |
2031 | ||
50cdb7c6 | 2032 | len = min_t(u64, chunk_size, preferred - size); |
87ad72a5 CH |
2033 | bufs[i] = dma_alloc_attrs(dev->dev, len, &dma_addr, GFP_KERNEL, |
2034 | DMA_ATTR_NO_KERNEL_MAPPING | DMA_ATTR_NO_WARN); | |
2035 | if (!bufs[i]) | |
2036 | break; | |
2037 | ||
2038 | descs[i].addr = cpu_to_le64(dma_addr); | |
6c3c05b0 | 2039 | descs[i].size = cpu_to_le32(len / NVME_CTRL_PAGE_SIZE); |
87ad72a5 CH |
2040 | i++; |
2041 | } | |
2042 | ||
92dc6895 | 2043 | if (!size) |
87ad72a5 | 2044 | goto out_free_bufs; |
87ad72a5 | 2045 | |
87ad72a5 CH |
2046 | dev->nr_host_mem_descs = i; |
2047 | dev->host_mem_size = size; | |
2048 | dev->host_mem_descs = descs; | |
4033f35d | 2049 | dev->host_mem_descs_dma = descs_dma; |
87ad72a5 CH |
2050 | dev->host_mem_desc_bufs = bufs; |
2051 | return 0; | |
2052 | ||
2053 | out_free_bufs: | |
2054 | while (--i >= 0) { | |
6c3c05b0 | 2055 | size_t size = le32_to_cpu(descs[i].size) * NVME_CTRL_PAGE_SIZE; |
87ad72a5 | 2056 | |
cc667f6d LD |
2057 | dma_free_attrs(dev->dev, size, bufs[i], |
2058 | le64_to_cpu(descs[i].addr), | |
2059 | DMA_ATTR_NO_KERNEL_MAPPING | DMA_ATTR_NO_WARN); | |
87ad72a5 CH |
2060 | } |
2061 | ||
2062 | kfree(bufs); | |
2063 | out_free_descs: | |
4033f35d CH |
2064 | dma_free_coherent(dev->dev, max_entries * sizeof(*descs), descs, |
2065 | descs_dma); | |
87ad72a5 | 2066 | out: |
87ad72a5 CH |
2067 | dev->host_mem_descs = NULL; |
2068 | return -ENOMEM; | |
2069 | } | |
2070 | ||
92dc6895 CH |
2071 | static int nvme_alloc_host_mem(struct nvme_dev *dev, u64 min, u64 preferred) |
2072 | { | |
9dc54a0d CK |
2073 | u64 min_chunk = min_t(u64, preferred, PAGE_SIZE * MAX_ORDER_NR_PAGES); |
2074 | u64 hmminds = max_t(u32, dev->ctrl.hmminds * 4096, PAGE_SIZE * 2); | |
2075 | u64 chunk_size; | |
92dc6895 CH |
2076 | |
2077 | /* start big and work our way down */ | |
9dc54a0d | 2078 | for (chunk_size = min_chunk; chunk_size >= hmminds; chunk_size /= 2) { |
92dc6895 CH |
2079 | if (!__nvme_alloc_host_mem(dev, preferred, chunk_size)) { |
2080 | if (!min || dev->host_mem_size >= min) | |
2081 | return 0; | |
2082 | nvme_free_host_mem(dev); | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | return -ENOMEM; | |
2087 | } | |
2088 | ||
9620cfba | 2089 | static int nvme_setup_host_mem(struct nvme_dev *dev) |
87ad72a5 CH |
2090 | { |
2091 | u64 max = (u64)max_host_mem_size_mb * SZ_1M; | |
2092 | u64 preferred = (u64)dev->ctrl.hmpre * 4096; | |
2093 | u64 min = (u64)dev->ctrl.hmmin * 4096; | |
2094 | u32 enable_bits = NVME_HOST_MEM_ENABLE; | |
6fbcde66 | 2095 | int ret; |
87ad72a5 | 2096 | |
acb71e53 CH |
2097 | if (!dev->ctrl.hmpre) |
2098 | return 0; | |
2099 | ||
87ad72a5 CH |
2100 | preferred = min(preferred, max); |
2101 | if (min > max) { | |
2102 | dev_warn(dev->ctrl.device, | |
2103 | "min host memory (%lld MiB) above limit (%d MiB).\n", | |
2104 | min >> ilog2(SZ_1M), max_host_mem_size_mb); | |
2105 | nvme_free_host_mem(dev); | |
9620cfba | 2106 | return 0; |
87ad72a5 CH |
2107 | } |
2108 | ||
2109 | /* | |
2110 | * If we already have a buffer allocated check if we can reuse it. | |
2111 | */ | |
2112 | if (dev->host_mem_descs) { | |
2113 | if (dev->host_mem_size >= min) | |
2114 | enable_bits |= NVME_HOST_MEM_RETURN; | |
2115 | else | |
2116 | nvme_free_host_mem(dev); | |
2117 | } | |
2118 | ||
2119 | if (!dev->host_mem_descs) { | |
92dc6895 CH |
2120 | if (nvme_alloc_host_mem(dev, min, preferred)) { |
2121 | dev_warn(dev->ctrl.device, | |
2122 | "failed to allocate host memory buffer.\n"); | |
9620cfba | 2123 | return 0; /* controller must work without HMB */ |
92dc6895 CH |
2124 | } |
2125 | ||
2126 | dev_info(dev->ctrl.device, | |
2127 | "allocated %lld MiB host memory buffer.\n", | |
2128 | dev->host_mem_size >> ilog2(SZ_1M)); | |
87ad72a5 CH |
2129 | } |
2130 | ||
9620cfba CH |
2131 | ret = nvme_set_host_mem(dev, enable_bits); |
2132 | if (ret) | |
87ad72a5 | 2133 | nvme_free_host_mem(dev); |
9620cfba | 2134 | return ret; |
9d713c2b KB |
2135 | } |
2136 | ||
0521905e KB |
2137 | static ssize_t cmb_show(struct device *dev, struct device_attribute *attr, |
2138 | char *buf) | |
2139 | { | |
2140 | struct nvme_dev *ndev = to_nvme_dev(dev_get_drvdata(dev)); | |
2141 | ||
2142 | return sysfs_emit(buf, "cmbloc : x%08x\ncmbsz : x%08x\n", | |
2143 | ndev->cmbloc, ndev->cmbsz); | |
2144 | } | |
2145 | static DEVICE_ATTR_RO(cmb); | |
2146 | ||
1751e97a KB |
2147 | static ssize_t cmbloc_show(struct device *dev, struct device_attribute *attr, |
2148 | char *buf) | |
2149 | { | |
2150 | struct nvme_dev *ndev = to_nvme_dev(dev_get_drvdata(dev)); | |
2151 | ||
2152 | return sysfs_emit(buf, "%u\n", ndev->cmbloc); | |
2153 | } | |
2154 | static DEVICE_ATTR_RO(cmbloc); | |
2155 | ||
2156 | static ssize_t cmbsz_show(struct device *dev, struct device_attribute *attr, | |
2157 | char *buf) | |
2158 | { | |
2159 | struct nvme_dev *ndev = to_nvme_dev(dev_get_drvdata(dev)); | |
2160 | ||
2161 | return sysfs_emit(buf, "%u\n", ndev->cmbsz); | |
2162 | } | |
2163 | static DEVICE_ATTR_RO(cmbsz); | |
2164 | ||
a5df5e79 KB |
2165 | static ssize_t hmb_show(struct device *dev, struct device_attribute *attr, |
2166 | char *buf) | |
2167 | { | |
2168 | struct nvme_dev *ndev = to_nvme_dev(dev_get_drvdata(dev)); | |
2169 | ||
2170 | return sysfs_emit(buf, "%d\n", ndev->hmb); | |
2171 | } | |
2172 | ||
2173 | static ssize_t hmb_store(struct device *dev, struct device_attribute *attr, | |
2174 | const char *buf, size_t count) | |
2175 | { | |
2176 | struct nvme_dev *ndev = to_nvme_dev(dev_get_drvdata(dev)); | |
2177 | bool new; | |
2178 | int ret; | |
2179 | ||
99722c8a | 2180 | if (kstrtobool(buf, &new) < 0) |
a5df5e79 KB |
2181 | return -EINVAL; |
2182 | ||
2183 | if (new == ndev->hmb) | |
2184 | return count; | |
2185 | ||
2186 | if (new) { | |
2187 | ret = nvme_setup_host_mem(ndev); | |
2188 | } else { | |
2189 | ret = nvme_set_host_mem(ndev, 0); | |
2190 | if (!ret) | |
2191 | nvme_free_host_mem(ndev); | |
2192 | } | |
2193 | ||
2194 | if (ret < 0) | |
2195 | return ret; | |
2196 | ||
2197 | return count; | |
2198 | } | |
2199 | static DEVICE_ATTR_RW(hmb); | |
2200 | ||
0521905e KB |
2201 | static umode_t nvme_pci_attrs_are_visible(struct kobject *kobj, |
2202 | struct attribute *a, int n) | |
2203 | { | |
2204 | struct nvme_ctrl *ctrl = | |
2205 | dev_get_drvdata(container_of(kobj, struct device, kobj)); | |
2206 | struct nvme_dev *dev = to_nvme_dev(ctrl); | |
2207 | ||
1751e97a KB |
2208 | if (a == &dev_attr_cmb.attr || |
2209 | a == &dev_attr_cmbloc.attr || | |
2210 | a == &dev_attr_cmbsz.attr) { | |
2211 | if (!dev->cmbsz) | |
2212 | return 0; | |
2213 | } | |
a5df5e79 KB |
2214 | if (a == &dev_attr_hmb.attr && !ctrl->hmpre) |
2215 | return 0; | |
2216 | ||
0521905e KB |
2217 | return a->mode; |
2218 | } | |
2219 | ||
2220 | static struct attribute *nvme_pci_attrs[] = { | |
2221 | &dev_attr_cmb.attr, | |
1751e97a KB |
2222 | &dev_attr_cmbloc.attr, |
2223 | &dev_attr_cmbsz.attr, | |
a5df5e79 | 2224 | &dev_attr_hmb.attr, |
0521905e KB |
2225 | NULL, |
2226 | }; | |
2227 | ||
86adbf0c | 2228 | static const struct attribute_group nvme_pci_dev_attrs_group = { |
0521905e KB |
2229 | .attrs = nvme_pci_attrs, |
2230 | .is_visible = nvme_pci_attrs_are_visible, | |
2231 | }; | |
2232 | ||
86adbf0c CH |
2233 | static const struct attribute_group *nvme_pci_dev_attr_groups[] = { |
2234 | &nvme_dev_attrs_group, | |
2235 | &nvme_pci_dev_attrs_group, | |
2236 | NULL, | |
2237 | }; | |
2238 | ||
612b7286 ML |
2239 | /* |
2240 | * nirqs is the number of interrupts available for write and read | |
2241 | * queues. The core already reserved an interrupt for the admin queue. | |
2242 | */ | |
2243 | static void nvme_calc_irq_sets(struct irq_affinity *affd, unsigned int nrirqs) | |
3b6592f7 | 2244 | { |
612b7286 | 2245 | struct nvme_dev *dev = affd->priv; |
2a5bcfdd | 2246 | unsigned int nr_read_queues, nr_write_queues = dev->nr_write_queues; |
3b6592f7 JA |
2247 | |
2248 | /* | |
ee0d96d3 | 2249 | * If there is no interrupt available for queues, ensure that |
612b7286 ML |
2250 | * the default queue is set to 1. The affinity set size is |
2251 | * also set to one, but the irq core ignores it for this case. | |
2252 | * | |
2253 | * If only one interrupt is available or 'write_queue' == 0, combine | |
2254 | * write and read queues. | |
2255 | * | |
2256 | * If 'write_queues' > 0, ensure it leaves room for at least one read | |
2257 | * queue. | |
3b6592f7 | 2258 | */ |
612b7286 ML |
2259 | if (!nrirqs) { |
2260 | nrirqs = 1; | |
2261 | nr_read_queues = 0; | |
2a5bcfdd | 2262 | } else if (nrirqs == 1 || !nr_write_queues) { |
612b7286 | 2263 | nr_read_queues = 0; |
2a5bcfdd | 2264 | } else if (nr_write_queues >= nrirqs) { |
612b7286 | 2265 | nr_read_queues = 1; |
3b6592f7 | 2266 | } else { |
2a5bcfdd | 2267 | nr_read_queues = nrirqs - nr_write_queues; |
3b6592f7 | 2268 | } |
612b7286 ML |
2269 | |
2270 | dev->io_queues[HCTX_TYPE_DEFAULT] = nrirqs - nr_read_queues; | |
2271 | affd->set_size[HCTX_TYPE_DEFAULT] = nrirqs - nr_read_queues; | |
2272 | dev->io_queues[HCTX_TYPE_READ] = nr_read_queues; | |
2273 | affd->set_size[HCTX_TYPE_READ] = nr_read_queues; | |
2274 | affd->nr_sets = nr_read_queues ? 2 : 1; | |
3b6592f7 JA |
2275 | } |
2276 | ||
6451fe73 | 2277 | static int nvme_setup_irqs(struct nvme_dev *dev, unsigned int nr_io_queues) |
3b6592f7 JA |
2278 | { |
2279 | struct pci_dev *pdev = to_pci_dev(dev->dev); | |
3b6592f7 | 2280 | struct irq_affinity affd = { |
9cfef55b | 2281 | .pre_vectors = 1, |
612b7286 ML |
2282 | .calc_sets = nvme_calc_irq_sets, |
2283 | .priv = dev, | |
3b6592f7 | 2284 | }; |
21cc2f3f | 2285 | unsigned int irq_queues, poll_queues; |
6451fe73 JA |
2286 | |
2287 | /* | |
21cc2f3f JX |
2288 | * Poll queues don't need interrupts, but we need at least one I/O queue |
2289 | * left over for non-polled I/O. | |
6451fe73 | 2290 | */ |
21cc2f3f JX |
2291 | poll_queues = min(dev->nr_poll_queues, nr_io_queues - 1); |
2292 | dev->io_queues[HCTX_TYPE_POLL] = poll_queues; | |
3b6592f7 | 2293 | |
21cc2f3f JX |
2294 | /* |
2295 | * Initialize for the single interrupt case, will be updated in | |
2296 | * nvme_calc_irq_sets(). | |
2297 | */ | |
612b7286 ML |
2298 | dev->io_queues[HCTX_TYPE_DEFAULT] = 1; |
2299 | dev->io_queues[HCTX_TYPE_READ] = 0; | |
3b6592f7 | 2300 | |
66341331 | 2301 | /* |
21cc2f3f JX |
2302 | * We need interrupts for the admin queue and each non-polled I/O queue, |
2303 | * but some Apple controllers require all queues to use the first | |
2304 | * vector. | |
66341331 | 2305 | */ |
21cc2f3f JX |
2306 | irq_queues = 1; |
2307 | if (!(dev->ctrl.quirks & NVME_QUIRK_SINGLE_VECTOR)) | |
2308 | irq_queues += (nr_io_queues - poll_queues); | |
612b7286 ML |
2309 | return pci_alloc_irq_vectors_affinity(pdev, 1, irq_queues, |
2310 | PCI_IRQ_ALL_TYPES | PCI_IRQ_AFFINITY, &affd); | |
3b6592f7 JA |
2311 | } |
2312 | ||
8fae268b KB |
2313 | static void nvme_disable_io_queues(struct nvme_dev *dev) |
2314 | { | |
2315 | if (__nvme_disable_io_queues(dev, nvme_admin_delete_sq)) | |
2316 | __nvme_disable_io_queues(dev, nvme_admin_delete_cq); | |
2317 | } | |
2318 | ||
2a5bcfdd WZ |
2319 | static unsigned int nvme_max_io_queues(struct nvme_dev *dev) |
2320 | { | |
e3aef095 NS |
2321 | /* |
2322 | * If tags are shared with admin queue (Apple bug), then | |
2323 | * make sure we only use one IO queue. | |
2324 | */ | |
2325 | if (dev->ctrl.quirks & NVME_QUIRK_SHARED_TAGS) | |
2326 | return 1; | |
2a5bcfdd WZ |
2327 | return num_possible_cpus() + dev->nr_write_queues + dev->nr_poll_queues; |
2328 | } | |
2329 | ||
8d85fce7 | 2330 | static int nvme_setup_io_queues(struct nvme_dev *dev) |
b60503ba | 2331 | { |
147b27e4 | 2332 | struct nvme_queue *adminq = &dev->queues[0]; |
e75ec752 | 2333 | struct pci_dev *pdev = to_pci_dev(dev->dev); |
2a5bcfdd | 2334 | unsigned int nr_io_queues; |
97f6ef64 | 2335 | unsigned long size; |
2a5bcfdd | 2336 | int result; |
b60503ba | 2337 | |
2a5bcfdd WZ |
2338 | /* |
2339 | * Sample the module parameters once at reset time so that we have | |
2340 | * stable values to work with. | |
2341 | */ | |
2342 | dev->nr_write_queues = write_queues; | |
2343 | dev->nr_poll_queues = poll_queues; | |
d38e9f04 | 2344 | |
e3aef095 | 2345 | nr_io_queues = dev->nr_allocated_queues - 1; |
9a0be7ab CH |
2346 | result = nvme_set_queue_count(&dev->ctrl, &nr_io_queues); |
2347 | if (result < 0) | |
1b23484b | 2348 | return result; |
9a0be7ab | 2349 | |
f5fa90dc | 2350 | if (nr_io_queues == 0) |
a5229050 | 2351 | return 0; |
53dc180e | 2352 | |
e4b9852a CC |
2353 | /* |
2354 | * Free IRQ resources as soon as NVMEQ_ENABLED bit transitions | |
2355 | * from set to unset. If there is a window to it is truely freed, | |
2356 | * pci_free_irq_vectors() jumping into this window will crash. | |
2357 | * And take lock to avoid racing with pci_free_irq_vectors() in | |
2358 | * nvme_dev_disable() path. | |
2359 | */ | |
2360 | result = nvme_setup_io_queues_trylock(dev); | |
2361 | if (result) | |
2362 | return result; | |
2363 | if (test_and_clear_bit(NVMEQ_ENABLED, &adminq->flags)) | |
2364 | pci_free_irq(pdev, 0, adminq); | |
b60503ba | 2365 | |
0f238ff5 | 2366 | if (dev->cmb_use_sqes) { |
8ffaadf7 JD |
2367 | result = nvme_cmb_qdepth(dev, nr_io_queues, |
2368 | sizeof(struct nvme_command)); | |
2369 | if (result > 0) | |
2370 | dev->q_depth = result; | |
2371 | else | |
0f238ff5 | 2372 | dev->cmb_use_sqes = false; |
8ffaadf7 JD |
2373 | } |
2374 | ||
97f6ef64 XY |
2375 | do { |
2376 | size = db_bar_size(dev, nr_io_queues); | |
2377 | result = nvme_remap_bar(dev, size); | |
2378 | if (!result) | |
2379 | break; | |
e4b9852a CC |
2380 | if (!--nr_io_queues) { |
2381 | result = -ENOMEM; | |
2382 | goto out_unlock; | |
2383 | } | |
97f6ef64 XY |
2384 | } while (1); |
2385 | adminq->q_db = dev->dbs; | |
f1938f6e | 2386 | |
8fae268b | 2387 | retry: |
9d713c2b | 2388 | /* Deregister the admin queue's interrupt */ |
e4b9852a CC |
2389 | if (test_and_clear_bit(NVMEQ_ENABLED, &adminq->flags)) |
2390 | pci_free_irq(pdev, 0, adminq); | |
9d713c2b | 2391 | |
e32efbfc JA |
2392 | /* |
2393 | * If we enable msix early due to not intx, disable it again before | |
2394 | * setting up the full range we need. | |
2395 | */ | |
dca51e78 | 2396 | pci_free_irq_vectors(pdev); |
3b6592f7 JA |
2397 | |
2398 | result = nvme_setup_irqs(dev, nr_io_queues); | |
e4b9852a CC |
2399 | if (result <= 0) { |
2400 | result = -EIO; | |
2401 | goto out_unlock; | |
2402 | } | |
3b6592f7 | 2403 | |
22b55601 | 2404 | dev->num_vecs = result; |
4b04cc6a | 2405 | result = max(result - 1, 1); |
e20ba6e1 | 2406 | dev->max_qid = result + dev->io_queues[HCTX_TYPE_POLL]; |
fa08a396 | 2407 | |
063a8096 MW |
2408 | /* |
2409 | * Should investigate if there's a performance win from allocating | |
2410 | * more queues than interrupt vectors; it might allow the submission | |
2411 | * path to scale better, even if the receive path is limited by the | |
2412 | * number of interrupts. | |
2413 | */ | |
dca51e78 | 2414 | result = queue_request_irq(adminq); |
7c349dde | 2415 | if (result) |
e4b9852a | 2416 | goto out_unlock; |
4e224106 | 2417 | set_bit(NVMEQ_ENABLED, &adminq->flags); |
e4b9852a | 2418 | mutex_unlock(&dev->shutdown_lock); |
8fae268b KB |
2419 | |
2420 | result = nvme_create_io_queues(dev); | |
2421 | if (result || dev->online_queues < 2) | |
2422 | return result; | |
2423 | ||
2424 | if (dev->online_queues - 1 < dev->max_qid) { | |
2425 | nr_io_queues = dev->online_queues - 1; | |
2426 | nvme_disable_io_queues(dev); | |
e4b9852a CC |
2427 | result = nvme_setup_io_queues_trylock(dev); |
2428 | if (result) | |
2429 | return result; | |
8fae268b KB |
2430 | nvme_suspend_io_queues(dev); |
2431 | goto retry; | |
2432 | } | |
2433 | dev_info(dev->ctrl.device, "%d/%d/%d default/read/poll queues\n", | |
2434 | dev->io_queues[HCTX_TYPE_DEFAULT], | |
2435 | dev->io_queues[HCTX_TYPE_READ], | |
2436 | dev->io_queues[HCTX_TYPE_POLL]); | |
2437 | return 0; | |
e4b9852a CC |
2438 | out_unlock: |
2439 | mutex_unlock(&dev->shutdown_lock); | |
2440 | return result; | |
b60503ba MW |
2441 | } |
2442 | ||
de671d61 JA |
2443 | static enum rq_end_io_ret nvme_del_queue_end(struct request *req, |
2444 | blk_status_t error) | |
a5768aa8 | 2445 | { |
db3cbfff | 2446 | struct nvme_queue *nvmeq = req->end_io_data; |
b5875222 | 2447 | |
db3cbfff | 2448 | blk_mq_free_request(req); |
d1ed6aa1 | 2449 | complete(&nvmeq->delete_done); |
de671d61 | 2450 | return RQ_END_IO_NONE; |
a5768aa8 KB |
2451 | } |
2452 | ||
de671d61 JA |
2453 | static enum rq_end_io_ret nvme_del_cq_end(struct request *req, |
2454 | blk_status_t error) | |
a5768aa8 | 2455 | { |
db3cbfff | 2456 | struct nvme_queue *nvmeq = req->end_io_data; |
a5768aa8 | 2457 | |
d1ed6aa1 CH |
2458 | if (error) |
2459 | set_bit(NVMEQ_DELETE_ERROR, &nvmeq->flags); | |
db3cbfff | 2460 | |
de671d61 | 2461 | return nvme_del_queue_end(req, error); |
a5768aa8 KB |
2462 | } |
2463 | ||
db3cbfff | 2464 | static int nvme_delete_queue(struct nvme_queue *nvmeq, u8 opcode) |
bda4e0fb | 2465 | { |
db3cbfff KB |
2466 | struct request_queue *q = nvmeq->dev->ctrl.admin_q; |
2467 | struct request *req; | |
f66e2804 | 2468 | struct nvme_command cmd = { }; |
bda4e0fb | 2469 | |
db3cbfff KB |
2470 | cmd.delete_queue.opcode = opcode; |
2471 | cmd.delete_queue.qid = cpu_to_le16(nvmeq->qid); | |
bda4e0fb | 2472 | |
e559398f | 2473 | req = blk_mq_alloc_request(q, nvme_req_op(&cmd), BLK_MQ_REQ_NOWAIT); |
db3cbfff KB |
2474 | if (IS_ERR(req)) |
2475 | return PTR_ERR(req); | |
e559398f | 2476 | nvme_init_request(req, &cmd); |
bda4e0fb | 2477 | |
e2e53086 CH |
2478 | if (opcode == nvme_admin_delete_cq) |
2479 | req->end_io = nvme_del_cq_end; | |
2480 | else | |
2481 | req->end_io = nvme_del_queue_end; | |
db3cbfff KB |
2482 | req->end_io_data = nvmeq; |
2483 | ||
d1ed6aa1 | 2484 | init_completion(&nvmeq->delete_done); |
128126a7 | 2485 | req->rq_flags |= RQF_QUIET; |
e2e53086 | 2486 | blk_execute_rq_nowait(req, false); |
db3cbfff | 2487 | return 0; |
bda4e0fb KB |
2488 | } |
2489 | ||
8fae268b | 2490 | static bool __nvme_disable_io_queues(struct nvme_dev *dev, u8 opcode) |
a5768aa8 | 2491 | { |
5271edd4 | 2492 | int nr_queues = dev->online_queues - 1, sent = 0; |
db3cbfff | 2493 | unsigned long timeout; |
a5768aa8 | 2494 | |
db3cbfff | 2495 | retry: |
dc96f938 | 2496 | timeout = NVME_ADMIN_TIMEOUT; |
5271edd4 CH |
2497 | while (nr_queues > 0) { |
2498 | if (nvme_delete_queue(&dev->queues[nr_queues], opcode)) | |
2499 | break; | |
2500 | nr_queues--; | |
2501 | sent++; | |
db3cbfff | 2502 | } |
d1ed6aa1 CH |
2503 | while (sent) { |
2504 | struct nvme_queue *nvmeq = &dev->queues[nr_queues + sent]; | |
2505 | ||
2506 | timeout = wait_for_completion_io_timeout(&nvmeq->delete_done, | |
5271edd4 CH |
2507 | timeout); |
2508 | if (timeout == 0) | |
2509 | return false; | |
d1ed6aa1 | 2510 | |
d1ed6aa1 | 2511 | sent--; |
5271edd4 CH |
2512 | if (nr_queues) |
2513 | goto retry; | |
2514 | } | |
2515 | return true; | |
a5768aa8 KB |
2516 | } |
2517 | ||
2455a4b7 | 2518 | static void nvme_pci_alloc_tag_set(struct nvme_dev *dev) |
b60503ba | 2519 | { |
2455a4b7 | 2520 | struct blk_mq_tag_set * set = &dev->tagset; |
2b1b7e78 JW |
2521 | int ret; |
2522 | ||
2455a4b7 CH |
2523 | set->ops = &nvme_mq_ops; |
2524 | set->nr_hw_queues = dev->online_queues - 1; | |
6ee742fa KB |
2525 | set->nr_maps = 1; |
2526 | if (dev->io_queues[HCTX_TYPE_READ]) | |
2527 | set->nr_maps = 2; | |
2455a4b7 | 2528 | if (dev->io_queues[HCTX_TYPE_POLL]) |
6ee742fa | 2529 | set->nr_maps = 3; |
2455a4b7 CH |
2530 | set->timeout = NVME_IO_TIMEOUT; |
2531 | set->numa_node = dev->ctrl.numa_node; | |
2532 | set->queue_depth = min_t(unsigned, dev->q_depth, BLK_MQ_MAX_DEPTH) - 1; | |
2533 | set->cmd_size = sizeof(struct nvme_iod); | |
2534 | set->flags = BLK_MQ_F_SHOULD_MERGE; | |
2535 | set->driver_data = dev; | |
d38e9f04 | 2536 | |
2455a4b7 CH |
2537 | /* |
2538 | * Some Apple controllers requires tags to be unique | |
2539 | * across admin and IO queue, so reserve the first 32 | |
2540 | * tags of the IO queue. | |
2541 | */ | |
2542 | if (dev->ctrl.quirks & NVME_QUIRK_SHARED_TAGS) | |
2543 | set->reserved_tags = NVME_AQ_DEPTH; | |
949928c1 | 2544 | |
2455a4b7 CH |
2545 | ret = blk_mq_alloc_tag_set(set); |
2546 | if (ret) { | |
2547 | dev_warn(dev->ctrl.device, | |
2548 | "IO queues tagset allocation failed %d\n", ret); | |
2549 | return; | |
ffe7704d | 2550 | } |
2455a4b7 CH |
2551 | dev->ctrl.tagset = set; |
2552 | } | |
949928c1 | 2553 | |
2455a4b7 CH |
2554 | static void nvme_pci_update_nr_queues(struct nvme_dev *dev) |
2555 | { | |
2556 | blk_mq_update_nr_hw_queues(&dev->tagset, dev->online_queues - 1); | |
2557 | /* free previously allocated queues that are no longer usable */ | |
2558 | nvme_free_queues(dev, dev->online_queues); | |
b60503ba MW |
2559 | } |
2560 | ||
b00a726a | 2561 | static int nvme_pci_enable(struct nvme_dev *dev) |
0877cb0d | 2562 | { |
b00a726a | 2563 | int result = -ENOMEM; |
e75ec752 | 2564 | struct pci_dev *pdev = to_pci_dev(dev->dev); |
4bdf2603 | 2565 | int dma_address_bits = 64; |
0877cb0d KB |
2566 | |
2567 | if (pci_enable_device_mem(pdev)) | |
2568 | return result; | |
2569 | ||
0877cb0d | 2570 | pci_set_master(pdev); |
0877cb0d | 2571 | |
4bdf2603 FS |
2572 | if (dev->ctrl.quirks & NVME_QUIRK_DMA_ADDRESS_BITS_48) |
2573 | dma_address_bits = 48; | |
2574 | if (dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(dma_address_bits))) | |
052d0efa | 2575 | goto disable; |
0877cb0d | 2576 | |
7a67cbea | 2577 | if (readl(dev->bar + NVME_REG_CSTS) == -1) { |
0e53d180 | 2578 | result = -ENODEV; |
b00a726a | 2579 | goto disable; |
0e53d180 | 2580 | } |
e32efbfc JA |
2581 | |
2582 | /* | |
a5229050 KB |
2583 | * Some devices and/or platforms don't advertise or work with INTx |
2584 | * interrupts. Pre-enable a single MSIX or MSI vec for setup. We'll | |
2585 | * adjust this later. | |
e32efbfc | 2586 | */ |
dca51e78 CH |
2587 | result = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); |
2588 | if (result < 0) | |
2589 | return result; | |
e32efbfc | 2590 | |
20d0dfe6 | 2591 | dev->ctrl.cap = lo_hi_readq(dev->bar + NVME_REG_CAP); |
7a67cbea | 2592 | |
7442ddce | 2593 | dev->q_depth = min_t(u32, NVME_CAP_MQES(dev->ctrl.cap) + 1, |
b27c1e68 | 2594 | io_queue_depth); |
aa22c8e6 | 2595 | dev->ctrl.sqsize = dev->q_depth - 1; /* 0's based queue depth */ |
20d0dfe6 | 2596 | dev->db_stride = 1 << NVME_CAP_STRIDE(dev->ctrl.cap); |
7a67cbea | 2597 | dev->dbs = dev->bar + 4096; |
1f390c1f | 2598 | |
66341331 BH |
2599 | /* |
2600 | * Some Apple controllers require a non-standard SQE size. | |
2601 | * Interestingly they also seem to ignore the CC:IOSQES register | |
2602 | * so we don't bother updating it here. | |
2603 | */ | |
2604 | if (dev->ctrl.quirks & NVME_QUIRK_128_BYTES_SQES) | |
2605 | dev->io_sqes = 7; | |
2606 | else | |
2607 | dev->io_sqes = NVME_NVM_IOSQES; | |
1f390c1f SG |
2608 | |
2609 | /* | |
2610 | * Temporary fix for the Apple controller found in the MacBook8,1 and | |
2611 | * some MacBook7,1 to avoid controller resets and data loss. | |
2612 | */ | |
2613 | if (pdev->vendor == PCI_VENDOR_ID_APPLE && pdev->device == 0x2001) { | |
2614 | dev->q_depth = 2; | |
9bdcfb10 CH |
2615 | dev_warn(dev->ctrl.device, "detected Apple NVMe controller, " |
2616 | "set queue depth=%u to work around controller resets\n", | |
1f390c1f | 2617 | dev->q_depth); |
d554b5e1 MP |
2618 | } else if (pdev->vendor == PCI_VENDOR_ID_SAMSUNG && |
2619 | (pdev->device == 0xa821 || pdev->device == 0xa822) && | |
20d0dfe6 | 2620 | NVME_CAP_MQES(dev->ctrl.cap) == 0) { |
d554b5e1 MP |
2621 | dev->q_depth = 64; |
2622 | dev_err(dev->ctrl.device, "detected PM1725 NVMe controller, " | |
2623 | "set queue depth=%u\n", dev->q_depth); | |
1f390c1f SG |
2624 | } |
2625 | ||
d38e9f04 BH |
2626 | /* |
2627 | * Controllers with the shared tags quirk need the IO queue to be | |
2628 | * big enough so that we get 32 tags for the admin queue | |
2629 | */ | |
2630 | if ((dev->ctrl.quirks & NVME_QUIRK_SHARED_TAGS) && | |
2631 | (dev->q_depth < (NVME_AQ_DEPTH + 2))) { | |
2632 | dev->q_depth = NVME_AQ_DEPTH + 2; | |
2633 | dev_warn(dev->ctrl.device, "IO queue depth clamped to %d\n", | |
2634 | dev->q_depth); | |
2635 | } | |
2636 | ||
2637 | ||
f65efd6d | 2638 | nvme_map_cmb(dev); |
202021c1 | 2639 | |
a0a3408e KB |
2640 | pci_enable_pcie_error_reporting(pdev); |
2641 | pci_save_state(pdev); | |
a6ee7f19 CH |
2642 | |
2643 | return nvme_pci_configure_admin_queue(dev); | |
0877cb0d KB |
2644 | |
2645 | disable: | |
0877cb0d KB |
2646 | pci_disable_device(pdev); |
2647 | return result; | |
2648 | } | |
2649 | ||
2650 | static void nvme_dev_unmap(struct nvme_dev *dev) | |
b00a726a KB |
2651 | { |
2652 | if (dev->bar) | |
2653 | iounmap(dev->bar); | |
a1f447b3 | 2654 | pci_release_mem_regions(to_pci_dev(dev->dev)); |
b00a726a KB |
2655 | } |
2656 | ||
a5cdb68c | 2657 | static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown) |
b60503ba | 2658 | { |
e43269e6 | 2659 | bool dead = true, freeze = false; |
302ad8cc | 2660 | struct pci_dev *pdev = to_pci_dev(dev->dev); |
22404274 | 2661 | |
77bf25ea | 2662 | mutex_lock(&dev->shutdown_lock); |
081f5e75 KB |
2663 | if (pci_is_enabled(pdev)) { |
2664 | u32 csts; | |
2665 | ||
2666 | if (pci_device_is_present(pdev)) | |
2667 | csts = readl(dev->bar + NVME_REG_CSTS); | |
2668 | else | |
2669 | csts = ~0; | |
302ad8cc | 2670 | |
ebef7368 | 2671 | if (dev->ctrl.state == NVME_CTRL_LIVE || |
e43269e6 KB |
2672 | dev->ctrl.state == NVME_CTRL_RESETTING) { |
2673 | freeze = true; | |
302ad8cc | 2674 | nvme_start_freeze(&dev->ctrl); |
e43269e6 | 2675 | } |
302ad8cc KB |
2676 | dead = !!((csts & NVME_CSTS_CFS) || !(csts & NVME_CSTS_RDY) || |
2677 | pdev->error_state != pci_channel_io_normal); | |
c9d3bf88 | 2678 | } |
c21377f8 | 2679 | |
302ad8cc KB |
2680 | /* |
2681 | * Give the controller a chance to complete all entered requests if | |
2682 | * doing a safe shutdown. | |
2683 | */ | |
e43269e6 KB |
2684 | if (!dead && shutdown && freeze) |
2685 | nvme_wait_freeze_timeout(&dev->ctrl, NVME_IO_TIMEOUT); | |
9a915a5b | 2686 | |
9f27bd70 | 2687 | nvme_quiesce_io_queues(&dev->ctrl); |
87ad72a5 | 2688 | |
64ee0ac0 | 2689 | if (!dead && dev->ctrl.queue_count > 0) { |
8fae268b | 2690 | nvme_disable_io_queues(dev); |
47d42d22 CH |
2691 | nvme_disable_ctrl(&dev->ctrl, shutdown); |
2692 | nvme_poll_irqdisable(&dev->queues[0]); | |
4d115420 | 2693 | } |
8fae268b | 2694 | nvme_suspend_io_queues(dev); |
10981f23 | 2695 | nvme_suspend_queue(dev, 0); |
c80767f7 CH |
2696 | pci_free_irq_vectors(pdev); |
2697 | if (pci_is_enabled(pdev)) { | |
2698 | pci_disable_pcie_error_reporting(pdev); | |
2699 | pci_disable_device(pdev); | |
2700 | } | |
fa46c6fb | 2701 | nvme_reap_pending_cqes(dev); |
07836e65 | 2702 | |
1fcfca78 GL |
2703 | nvme_cancel_tagset(&dev->ctrl); |
2704 | nvme_cancel_admin_tagset(&dev->ctrl); | |
302ad8cc KB |
2705 | |
2706 | /* | |
2707 | * The driver will not be starting up queues again if shutting down so | |
2708 | * must flush all entered requests to their failed completion to avoid | |
2709 | * deadlocking blk-mq hot-cpu notifier. | |
2710 | */ | |
c8e9e9b7 | 2711 | if (shutdown) { |
9f27bd70 | 2712 | nvme_unquiesce_io_queues(&dev->ctrl); |
c8e9e9b7 | 2713 | if (dev->ctrl.admin_q && !blk_queue_dying(dev->ctrl.admin_q)) |
9f27bd70 | 2714 | nvme_unquiesce_admin_queue(&dev->ctrl); |
c8e9e9b7 | 2715 | } |
77bf25ea | 2716 | mutex_unlock(&dev->shutdown_lock); |
b60503ba MW |
2717 | } |
2718 | ||
c1ac9a4b KB |
2719 | static int nvme_disable_prepare_reset(struct nvme_dev *dev, bool shutdown) |
2720 | { | |
2721 | if (!nvme_wait_reset(&dev->ctrl)) | |
2722 | return -EBUSY; | |
2723 | nvme_dev_disable(dev, shutdown); | |
2724 | return 0; | |
2725 | } | |
2726 | ||
091b6092 MW |
2727 | static int nvme_setup_prp_pools(struct nvme_dev *dev) |
2728 | { | |
e75ec752 | 2729 | dev->prp_page_pool = dma_pool_create("prp list page", dev->dev, |
c61b82c7 CH |
2730 | NVME_CTRL_PAGE_SIZE, |
2731 | NVME_CTRL_PAGE_SIZE, 0); | |
091b6092 MW |
2732 | if (!dev->prp_page_pool) |
2733 | return -ENOMEM; | |
2734 | ||
99802a7a | 2735 | /* Optimisation for I/Os between 4k and 128k */ |
e75ec752 | 2736 | dev->prp_small_pool = dma_pool_create("prp list 256", dev->dev, |
99802a7a MW |
2737 | 256, 256, 0); |
2738 | if (!dev->prp_small_pool) { | |
2739 | dma_pool_destroy(dev->prp_page_pool); | |
2740 | return -ENOMEM; | |
2741 | } | |
091b6092 MW |
2742 | return 0; |
2743 | } | |
2744 | ||
2745 | static void nvme_release_prp_pools(struct nvme_dev *dev) | |
2746 | { | |
2747 | dma_pool_destroy(dev->prp_page_pool); | |
99802a7a | 2748 | dma_pool_destroy(dev->prp_small_pool); |
091b6092 MW |
2749 | } |
2750 | ||
081a7d95 CH |
2751 | static int nvme_pci_alloc_iod_mempool(struct nvme_dev *dev) |
2752 | { | |
2753 | size_t npages = max(nvme_pci_npages_prp(), nvme_pci_npages_sgl()); | |
2754 | size_t alloc_size = sizeof(__le64 *) * npages + | |
2755 | sizeof(struct scatterlist) * NVME_MAX_SEGS; | |
2756 | ||
2757 | WARN_ON_ONCE(alloc_size > PAGE_SIZE); | |
2758 | dev->iod_mempool = mempool_create_node(1, | |
2759 | mempool_kmalloc, mempool_kfree, | |
2760 | (void *)alloc_size, GFP_KERNEL, | |
2761 | dev_to_node(dev->dev)); | |
2762 | if (!dev->iod_mempool) | |
2763 | return -ENOMEM; | |
2764 | return 0; | |
2765 | } | |
2766 | ||
770597ec KB |
2767 | static void nvme_free_tagset(struct nvme_dev *dev) |
2768 | { | |
2769 | if (dev->tagset.tags) | |
2770 | blk_mq_free_tag_set(&dev->tagset); | |
2771 | dev->ctrl.tagset = NULL; | |
2772 | } | |
2773 | ||
2e87570b | 2774 | /* pairs with nvme_pci_alloc_dev */ |
1673f1f0 | 2775 | static void nvme_pci_free_ctrl(struct nvme_ctrl *ctrl) |
5e82e952 | 2776 | { |
1673f1f0 | 2777 | struct nvme_dev *dev = to_nvme_dev(ctrl); |
9ac27090 | 2778 | |
770597ec | 2779 | nvme_free_tagset(dev); |
253fd4ac IR |
2780 | put_device(dev->dev); |
2781 | kfree(dev->queues); | |
5e82e952 KB |
2782 | kfree(dev); |
2783 | } | |
2784 | ||
fd634f41 | 2785 | static void nvme_reset_work(struct work_struct *work) |
5e82e952 | 2786 | { |
d86c4d8e CH |
2787 | struct nvme_dev *dev = |
2788 | container_of(work, struct nvme_dev, ctrl.reset_work); | |
a98e58e5 | 2789 | bool was_suspend = !!(dev->ctrl.ctrl_config & NVME_CC_SHN_NORMAL); |
e71afda4 | 2790 | int result; |
5e82e952 | 2791 | |
7764656b ZC |
2792 | if (dev->ctrl.state != NVME_CTRL_RESETTING) { |
2793 | dev_warn(dev->ctrl.device, "ctrl state %d is not RESETTING\n", | |
2794 | dev->ctrl.state); | |
e71afda4 | 2795 | result = -ENODEV; |
fd634f41 | 2796 | goto out; |
e71afda4 | 2797 | } |
5e82e952 | 2798 | |
fd634f41 CH |
2799 | /* |
2800 | * If we're called to reset a live controller first shut it down before | |
2801 | * moving on. | |
2802 | */ | |
b00a726a | 2803 | if (dev->ctrl.ctrl_config & NVME_CC_ENABLE) |
a5cdb68c | 2804 | nvme_dev_disable(dev, false); |
d6135c3a | 2805 | nvme_sync_queues(&dev->ctrl); |
5e82e952 | 2806 | |
5c959d73 | 2807 | mutex_lock(&dev->shutdown_lock); |
b00a726a | 2808 | result = nvme_pci_enable(dev); |
f0b50732 | 2809 | if (result) |
4726bcf3 | 2810 | goto out_unlock; |
9f27bd70 | 2811 | nvme_unquiesce_admin_queue(&dev->ctrl); |
5c959d73 KB |
2812 | mutex_unlock(&dev->shutdown_lock); |
2813 | ||
2814 | /* | |
2815 | * Introduce CONNECTING state from nvme-fc/rdma transports to mark the | |
2816 | * initializing procedure here. | |
2817 | */ | |
2818 | if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_CONNECTING)) { | |
2819 | dev_warn(dev->ctrl.device, | |
2820 | "failed to mark controller CONNECTING\n"); | |
cee6c269 | 2821 | result = -EBUSY; |
5c959d73 KB |
2822 | goto out; |
2823 | } | |
943e942e | 2824 | |
94cc781f | 2825 | result = nvme_init_ctrl_finish(&dev->ctrl, was_suspend); |
ce4541f4 | 2826 | if (result) |
f58944e2 | 2827 | goto out; |
ce4541f4 | 2828 | |
65a54646 | 2829 | nvme_dbbuf_dma_alloc(dev); |
f9f38e33 | 2830 | |
acb71e53 CH |
2831 | result = nvme_setup_host_mem(dev); |
2832 | if (result < 0) | |
2833 | goto out; | |
87ad72a5 | 2834 | |
f0b50732 | 2835 | result = nvme_setup_io_queues(dev); |
badc34d4 | 2836 | if (result) |
f58944e2 | 2837 | goto out; |
f0b50732 | 2838 | |
eac3ef26 CH |
2839 | /* |
2840 | * Freeze and update the number of I/O queues as thos might have | |
2841 | * changed. If there are no I/O queues left after this reset, keep the | |
2842 | * controller around but remove all namespaces. | |
2843 | */ | |
2844 | if (dev->online_queues > 1) { | |
9f27bd70 | 2845 | nvme_unquiesce_io_queues(&dev->ctrl); |
eac3ef26 CH |
2846 | nvme_wait_freeze(&dev->ctrl); |
2847 | nvme_pci_update_nr_queues(dev); | |
2848 | nvme_dbbuf_set(dev); | |
2849 | nvme_unfreeze(&dev->ctrl); | |
3cf519b5 | 2850 | } else { |
eac3ef26 CH |
2851 | dev_warn(dev->ctrl.device, "IO queues lost\n"); |
2852 | nvme_mark_namespaces_dead(&dev->ctrl); | |
9f27bd70 | 2853 | nvme_unquiesce_io_queues(&dev->ctrl); |
eac3ef26 CH |
2854 | nvme_remove_namespaces(&dev->ctrl); |
2855 | nvme_free_tagset(dev); | |
3cf519b5 CH |
2856 | } |
2857 | ||
2b1b7e78 JW |
2858 | /* |
2859 | * If only admin queue live, keep it to do further investigation or | |
2860 | * recovery. | |
2861 | */ | |
5d02a5c1 | 2862 | if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_LIVE)) { |
2b1b7e78 | 2863 | dev_warn(dev->ctrl.device, |
5d02a5c1 | 2864 | "failed to mark controller live state\n"); |
e71afda4 | 2865 | result = -ENODEV; |
bb8d261e CH |
2866 | goto out; |
2867 | } | |
92911a55 | 2868 | |
d09f2b45 | 2869 | nvme_start_ctrl(&dev->ctrl); |
3cf519b5 | 2870 | return; |
f0b50732 | 2871 | |
4726bcf3 KB |
2872 | out_unlock: |
2873 | mutex_unlock(&dev->shutdown_lock); | |
3cf519b5 | 2874 | out: |
c7c16c5b CH |
2875 | /* |
2876 | * Set state to deleting now to avoid blocking nvme_wait_reset(), which | |
2877 | * may be holding this pci_dev's device lock. | |
2878 | */ | |
2879 | dev_warn(dev->ctrl.device, "Disabling device after reset failure: %d\n", | |
2880 | result); | |
2881 | nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DELETING); | |
2882 | nvme_dev_disable(dev, true); | |
2883 | nvme_mark_namespaces_dead(&dev->ctrl); | |
2884 | nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DEAD); | |
9a6b9458 KB |
2885 | } |
2886 | ||
1c63dc66 | 2887 | static int nvme_pci_reg_read32(struct nvme_ctrl *ctrl, u32 off, u32 *val) |
9ca97374 | 2888 | { |
1c63dc66 | 2889 | *val = readl(to_nvme_dev(ctrl)->bar + off); |
90667892 | 2890 | return 0; |
9ca97374 TH |
2891 | } |
2892 | ||
5fd4ce1b | 2893 | static int nvme_pci_reg_write32(struct nvme_ctrl *ctrl, u32 off, u32 val) |
4cc06521 | 2894 | { |
5fd4ce1b CH |
2895 | writel(val, to_nvme_dev(ctrl)->bar + off); |
2896 | return 0; | |
2897 | } | |
4cc06521 | 2898 | |
7fd8930f CH |
2899 | static int nvme_pci_reg_read64(struct nvme_ctrl *ctrl, u32 off, u64 *val) |
2900 | { | |
3a8ecc93 | 2901 | *val = lo_hi_readq(to_nvme_dev(ctrl)->bar + off); |
7fd8930f | 2902 | return 0; |
4cc06521 KB |
2903 | } |
2904 | ||
97c12223 KB |
2905 | static int nvme_pci_get_address(struct nvme_ctrl *ctrl, char *buf, int size) |
2906 | { | |
2907 | struct pci_dev *pdev = to_pci_dev(to_nvme_dev(ctrl)->dev); | |
2908 | ||
2db24e4a | 2909 | return snprintf(buf, size, "%s\n", dev_name(&pdev->dev)); |
97c12223 KB |
2910 | } |
2911 | ||
2f0dad17 KB |
2912 | static void nvme_pci_print_device_info(struct nvme_ctrl *ctrl) |
2913 | { | |
2914 | struct pci_dev *pdev = to_pci_dev(to_nvme_dev(ctrl)->dev); | |
2915 | struct nvme_subsystem *subsys = ctrl->subsys; | |
2916 | ||
2917 | dev_err(ctrl->device, | |
2918 | "VID:DID %04x:%04x model:%.*s firmware:%.*s\n", | |
2919 | pdev->vendor, pdev->device, | |
2920 | nvme_strlen(subsys->model, sizeof(subsys->model)), | |
2921 | subsys->model, nvme_strlen(subsys->firmware_rev, | |
2922 | sizeof(subsys->firmware_rev)), | |
2923 | subsys->firmware_rev); | |
2924 | } | |
2925 | ||
2f859441 LG |
2926 | static bool nvme_pci_supports_pci_p2pdma(struct nvme_ctrl *ctrl) |
2927 | { | |
2928 | struct nvme_dev *dev = to_nvme_dev(ctrl); | |
2929 | ||
2930 | return dma_pci_p2pdma_supported(dev->dev); | |
2931 | } | |
2932 | ||
1c63dc66 | 2933 | static const struct nvme_ctrl_ops nvme_pci_ctrl_ops = { |
1a353d85 | 2934 | .name = "pcie", |
e439bb12 | 2935 | .module = THIS_MODULE, |
2f859441 | 2936 | .flags = NVME_F_METADATA_SUPPORTED, |
86adbf0c | 2937 | .dev_attr_groups = nvme_pci_dev_attr_groups, |
1c63dc66 | 2938 | .reg_read32 = nvme_pci_reg_read32, |
5fd4ce1b | 2939 | .reg_write32 = nvme_pci_reg_write32, |
7fd8930f | 2940 | .reg_read64 = nvme_pci_reg_read64, |
1673f1f0 | 2941 | .free_ctrl = nvme_pci_free_ctrl, |
f866fc42 | 2942 | .submit_async_event = nvme_pci_submit_async_event, |
97c12223 | 2943 | .get_address = nvme_pci_get_address, |
2f0dad17 | 2944 | .print_device_info = nvme_pci_print_device_info, |
2f859441 | 2945 | .supports_pci_p2pdma = nvme_pci_supports_pci_p2pdma, |
1c63dc66 | 2946 | }; |
4cc06521 | 2947 | |
b00a726a KB |
2948 | static int nvme_dev_map(struct nvme_dev *dev) |
2949 | { | |
b00a726a KB |
2950 | struct pci_dev *pdev = to_pci_dev(dev->dev); |
2951 | ||
a1f447b3 | 2952 | if (pci_request_mem_regions(pdev, "nvme")) |
b00a726a KB |
2953 | return -ENODEV; |
2954 | ||
97f6ef64 | 2955 | if (nvme_remap_bar(dev, NVME_REG_DBS + 4096)) |
b00a726a KB |
2956 | goto release; |
2957 | ||
9fa196e7 | 2958 | return 0; |
b00a726a | 2959 | release: |
9fa196e7 MG |
2960 | pci_release_mem_regions(pdev); |
2961 | return -ENODEV; | |
b00a726a KB |
2962 | } |
2963 | ||
8427bbc2 | 2964 | static unsigned long check_vendor_combination_bug(struct pci_dev *pdev) |
ff5350a8 AL |
2965 | { |
2966 | if (pdev->vendor == 0x144d && pdev->device == 0xa802) { | |
2967 | /* | |
2968 | * Several Samsung devices seem to drop off the PCIe bus | |
2969 | * randomly when APST is on and uses the deepest sleep state. | |
2970 | * This has been observed on a Samsung "SM951 NVMe SAMSUNG | |
2971 | * 256GB", a "PM951 NVMe SAMSUNG 512GB", and a "Samsung SSD | |
2972 | * 950 PRO 256GB", but it seems to be restricted to two Dell | |
2973 | * laptops. | |
2974 | */ | |
2975 | if (dmi_match(DMI_SYS_VENDOR, "Dell Inc.") && | |
2976 | (dmi_match(DMI_PRODUCT_NAME, "XPS 15 9550") || | |
2977 | dmi_match(DMI_PRODUCT_NAME, "Precision 5510"))) | |
2978 | return NVME_QUIRK_NO_DEEPEST_PS; | |
8427bbc2 KHF |
2979 | } else if (pdev->vendor == 0x144d && pdev->device == 0xa804) { |
2980 | /* | |
2981 | * Samsung SSD 960 EVO drops off the PCIe bus after system | |
467c77d4 JJ |
2982 | * suspend on a Ryzen board, ASUS PRIME B350M-A, as well as |
2983 | * within few minutes after bootup on a Coffee Lake board - | |
2984 | * ASUS PRIME Z370-A | |
8427bbc2 KHF |
2985 | */ |
2986 | if (dmi_match(DMI_BOARD_VENDOR, "ASUSTeK COMPUTER INC.") && | |
467c77d4 JJ |
2987 | (dmi_match(DMI_BOARD_NAME, "PRIME B350M-A") || |
2988 | dmi_match(DMI_BOARD_NAME, "PRIME Z370-A"))) | |
8427bbc2 | 2989 | return NVME_QUIRK_NO_APST; |
1fae37ac S |
2990 | } else if ((pdev->vendor == 0x144d && (pdev->device == 0xa801 || |
2991 | pdev->device == 0xa808 || pdev->device == 0xa809)) || | |
2992 | (pdev->vendor == 0x1e0f && pdev->device == 0x0001)) { | |
2993 | /* | |
2994 | * Forcing to use host managed nvme power settings for | |
2995 | * lowest idle power with quick resume latency on | |
2996 | * Samsung and Toshiba SSDs based on suspend behavior | |
2997 | * on Coffee Lake board for LENOVO C640 | |
2998 | */ | |
2999 | if ((dmi_match(DMI_BOARD_VENDOR, "LENOVO")) && | |
3000 | dmi_match(DMI_BOARD_NAME, "LNVNB161216")) | |
3001 | return NVME_QUIRK_SIMPLE_SUSPEND; | |
ff5350a8 AL |
3002 | } |
3003 | ||
3004 | return 0; | |
3005 | } | |
3006 | ||
2e87570b CH |
3007 | static struct nvme_dev *nvme_pci_alloc_dev(struct pci_dev *pdev, |
3008 | const struct pci_device_id *id) | |
b60503ba | 3009 | { |
ff5350a8 | 3010 | unsigned long quirks = id->driver_data; |
2e87570b CH |
3011 | int node = dev_to_node(&pdev->dev); |
3012 | struct nvme_dev *dev; | |
3013 | int ret = -ENOMEM; | |
b60503ba | 3014 | |
a4aea562 | 3015 | if (node == NUMA_NO_NODE) |
2fa84351 | 3016 | set_dev_node(&pdev->dev, first_memory_node); |
a4aea562 MB |
3017 | |
3018 | dev = kzalloc_node(sizeof(*dev), GFP_KERNEL, node); | |
b60503ba | 3019 | if (!dev) |
2e87570b CH |
3020 | return NULL; |
3021 | INIT_WORK(&dev->ctrl.reset_work, nvme_reset_work); | |
2e87570b | 3022 | mutex_init(&dev->shutdown_lock); |
147b27e4 | 3023 | |
2a5bcfdd WZ |
3024 | dev->nr_write_queues = write_queues; |
3025 | dev->nr_poll_queues = poll_queues; | |
3026 | dev->nr_allocated_queues = nvme_max_io_queues(dev) + 1; | |
3027 | dev->queues = kcalloc_node(dev->nr_allocated_queues, | |
3028 | sizeof(struct nvme_queue), GFP_KERNEL, node); | |
b60503ba | 3029 | if (!dev->queues) |
2e87570b | 3030 | goto out_free_dev; |
b60503ba | 3031 | |
e75ec752 | 3032 | dev->dev = get_device(&pdev->dev); |
4cc06521 | 3033 | |
8427bbc2 | 3034 | quirks |= check_vendor_combination_bug(pdev); |
2744d7a0 | 3035 | if (!noacpi && acpi_storage_d3(&pdev->dev)) { |
df4f9bc4 DB |
3036 | /* |
3037 | * Some systems use a bios work around to ask for D3 on | |
3038 | * platforms that support kernel managed suspend. | |
3039 | */ | |
3040 | dev_info(&pdev->dev, | |
3041 | "platform quirk: setting simple suspend\n"); | |
3042 | quirks |= NVME_QUIRK_SIMPLE_SUSPEND; | |
3043 | } | |
2e87570b CH |
3044 | ret = nvme_init_ctrl(&dev->ctrl, &pdev->dev, &nvme_pci_ctrl_ops, |
3045 | quirks); | |
3046 | if (ret) | |
3047 | goto out_put_device; | |
3f30a79c CH |
3048 | |
3049 | dma_set_min_align_mask(&pdev->dev, NVME_CTRL_PAGE_SIZE - 1); | |
3050 | dma_set_max_seg_size(&pdev->dev, 0xffffffff); | |
3051 | ||
3052 | /* | |
3053 | * Limit the max command size to prevent iod->sg allocations going | |
3054 | * over a single page. | |
3055 | */ | |
3056 | dev->ctrl.max_hw_sectors = min_t(u32, | |
3057 | NVME_MAX_KB_SZ << 1, dma_max_mapping_size(&pdev->dev) >> 9); | |
3058 | dev->ctrl.max_segments = NVME_MAX_SEGS; | |
3059 | ||
3060 | /* | |
3061 | * There is no support for SGLs for metadata (yet), so we are limited to | |
3062 | * a single integrity segment for the separate metadata pointer. | |
3063 | */ | |
3064 | dev->ctrl.max_integrity_segments = 1; | |
2e87570b | 3065 | return dev; |
df4f9bc4 | 3066 | |
2e87570b CH |
3067 | out_put_device: |
3068 | put_device(dev->dev); | |
3069 | kfree(dev->queues); | |
3070 | out_free_dev: | |
3071 | kfree(dev); | |
3072 | return ERR_PTR(ret); | |
3073 | } | |
3074 | ||
3075 | static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
3076 | { | |
3077 | struct nvme_dev *dev; | |
3078 | int result = -ENOMEM; | |
3079 | ||
3080 | dev = nvme_pci_alloc_dev(pdev, id); | |
3081 | if (!dev) | |
3082 | return -ENOMEM; | |
3083 | ||
3084 | result = nvme_dev_map(dev); | |
3085 | if (result) | |
3086 | goto out_uninit_ctrl; | |
3087 | ||
3088 | result = nvme_setup_prp_pools(dev); | |
081a7d95 | 3089 | if (result) |
2e87570b | 3090 | goto out_dev_unmap; |
943e942e | 3091 | |
2e87570b | 3092 | result = nvme_pci_alloc_iod_mempool(dev); |
b6e44b4c | 3093 | if (result) |
2e87570b | 3094 | goto out_release_prp_pools; |
b6e44b4c | 3095 | |
1b3c47c1 | 3096 | dev_info(dev->ctrl.device, "pci function %s\n", dev_name(&pdev->dev)); |
eac3ef26 CH |
3097 | |
3098 | result = nvme_pci_enable(dev); | |
3099 | if (result) | |
3100 | goto out_release_iod_mempool; | |
3101 | ||
3102 | result = nvme_pci_alloc_admin_tag_set(dev); | |
3103 | if (result) | |
3104 | goto out_disable; | |
3105 | ||
3106 | /* | |
3107 | * Mark the controller as connecting before sending admin commands to | |
3108 | * allow the timeout handler to do the right thing. | |
3109 | */ | |
3110 | if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_CONNECTING)) { | |
3111 | dev_warn(dev->ctrl.device, | |
3112 | "failed to mark controller CONNECTING\n"); | |
3113 | result = -EBUSY; | |
3114 | goto out_disable; | |
3115 | } | |
3116 | ||
3117 | result = nvme_init_ctrl_finish(&dev->ctrl, false); | |
3118 | if (result) | |
3119 | goto out_disable; | |
3120 | ||
3121 | nvme_dbbuf_dma_alloc(dev); | |
3122 | ||
3123 | result = nvme_setup_host_mem(dev); | |
3124 | if (result < 0) | |
3125 | goto out_disable; | |
3126 | ||
3127 | result = nvme_setup_io_queues(dev); | |
3128 | if (result) | |
3129 | goto out_disable; | |
3130 | ||
3131 | if (dev->online_queues > 1) { | |
3132 | nvme_pci_alloc_tag_set(dev); | |
3133 | nvme_dbbuf_set(dev); | |
3134 | } else { | |
3135 | dev_warn(dev->ctrl.device, "IO queues not created\n"); | |
3136 | } | |
3137 | ||
3138 | if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_LIVE)) { | |
3139 | dev_warn(dev->ctrl.device, | |
3140 | "failed to mark controller live state\n"); | |
3141 | result = -ENODEV; | |
3142 | goto out_disable; | |
3143 | } | |
3144 | ||
2e87570b | 3145 | pci_set_drvdata(pdev, dev); |
1b3c47c1 | 3146 | |
eac3ef26 CH |
3147 | nvme_start_ctrl(&dev->ctrl); |
3148 | nvme_put_ctrl(&dev->ctrl); | |
b60503ba MW |
3149 | return 0; |
3150 | ||
eac3ef26 CH |
3151 | out_disable: |
3152 | nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DELETING); | |
3153 | nvme_dev_disable(dev, true); | |
3154 | nvme_free_host_mem(dev); | |
3155 | nvme_dev_remove_admin(dev); | |
3156 | nvme_dbbuf_dma_free(dev); | |
3157 | nvme_free_queues(dev, 0); | |
3158 | out_release_iod_mempool: | |
3159 | mempool_destroy(dev->iod_mempool); | |
2e87570b | 3160 | out_release_prp_pools: |
091b6092 | 3161 | nvme_release_prp_pools(dev); |
2e87570b | 3162 | out_dev_unmap: |
b00c9b7a | 3163 | nvme_dev_unmap(dev); |
2e87570b CH |
3164 | out_uninit_ctrl: |
3165 | nvme_uninit_ctrl(&dev->ctrl); | |
b60503ba MW |
3166 | return result; |
3167 | } | |
3168 | ||
775755ed | 3169 | static void nvme_reset_prepare(struct pci_dev *pdev) |
f0d54a54 | 3170 | { |
a6739479 | 3171 | struct nvme_dev *dev = pci_get_drvdata(pdev); |
c1ac9a4b KB |
3172 | |
3173 | /* | |
3174 | * We don't need to check the return value from waiting for the reset | |
3175 | * state as pci_dev device lock is held, making it impossible to race | |
3176 | * with ->remove(). | |
3177 | */ | |
3178 | nvme_disable_prepare_reset(dev, false); | |
3179 | nvme_sync_queues(&dev->ctrl); | |
775755ed | 3180 | } |
f0d54a54 | 3181 | |
775755ed CH |
3182 | static void nvme_reset_done(struct pci_dev *pdev) |
3183 | { | |
f263fbb8 | 3184 | struct nvme_dev *dev = pci_get_drvdata(pdev); |
c1ac9a4b KB |
3185 | |
3186 | if (!nvme_try_sched_reset(&dev->ctrl)) | |
3187 | flush_work(&dev->ctrl.reset_work); | |
f0d54a54 KB |
3188 | } |
3189 | ||
09ece142 KB |
3190 | static void nvme_shutdown(struct pci_dev *pdev) |
3191 | { | |
3192 | struct nvme_dev *dev = pci_get_drvdata(pdev); | |
4e523547 | 3193 | |
c1ac9a4b | 3194 | nvme_disable_prepare_reset(dev, true); |
09ece142 KB |
3195 | } |
3196 | ||
f58944e2 KB |
3197 | /* |
3198 | * The driver's remove may be called on a device in a partially initialized | |
3199 | * state. This function must not have any dependencies on the device state in | |
3200 | * order to proceed. | |
3201 | */ | |
8d85fce7 | 3202 | static void nvme_remove(struct pci_dev *pdev) |
b60503ba MW |
3203 | { |
3204 | struct nvme_dev *dev = pci_get_drvdata(pdev); | |
9a6b9458 | 3205 | |
bb8d261e | 3206 | nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DELETING); |
9a6b9458 | 3207 | pci_set_drvdata(pdev, NULL); |
0ff9d4e1 | 3208 | |
6db28eda | 3209 | if (!pci_device_is_present(pdev)) { |
0ff9d4e1 | 3210 | nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DEAD); |
1d39e692 | 3211 | nvme_dev_disable(dev, true); |
6db28eda | 3212 | } |
0ff9d4e1 | 3213 | |
d86c4d8e | 3214 | flush_work(&dev->ctrl.reset_work); |
d09f2b45 SG |
3215 | nvme_stop_ctrl(&dev->ctrl); |
3216 | nvme_remove_namespaces(&dev->ctrl); | |
a5cdb68c | 3217 | nvme_dev_disable(dev, true); |
87ad72a5 | 3218 | nvme_free_host_mem(dev); |
a4aea562 | 3219 | nvme_dev_remove_admin(dev); |
c11b7716 | 3220 | nvme_dbbuf_dma_free(dev); |
a1a5ef99 | 3221 | nvme_free_queues(dev, 0); |
c11b7716 | 3222 | mempool_destroy(dev->iod_mempool); |
9a6b9458 | 3223 | nvme_release_prp_pools(dev); |
b00a726a | 3224 | nvme_dev_unmap(dev); |
726612b6 | 3225 | nvme_uninit_ctrl(&dev->ctrl); |
b60503ba MW |
3226 | } |
3227 | ||
671a6018 | 3228 | #ifdef CONFIG_PM_SLEEP |
d916b1be KB |
3229 | static int nvme_get_power_state(struct nvme_ctrl *ctrl, u32 *ps) |
3230 | { | |
3231 | return nvme_get_features(ctrl, NVME_FEAT_POWER_MGMT, 0, NULL, 0, ps); | |
3232 | } | |
3233 | ||
3234 | static int nvme_set_power_state(struct nvme_ctrl *ctrl, u32 ps) | |
3235 | { | |
3236 | return nvme_set_features(ctrl, NVME_FEAT_POWER_MGMT, ps, NULL, 0, NULL); | |
3237 | } | |
3238 | ||
3239 | static int nvme_resume(struct device *dev) | |
3240 | { | |
3241 | struct nvme_dev *ndev = pci_get_drvdata(to_pci_dev(dev)); | |
3242 | struct nvme_ctrl *ctrl = &ndev->ctrl; | |
3243 | ||
4eaefe8c | 3244 | if (ndev->last_ps == U32_MAX || |
d916b1be | 3245 | nvme_set_power_state(ctrl, ndev->last_ps) != 0) |
e5ad96f3 KB |
3246 | goto reset; |
3247 | if (ctrl->hmpre && nvme_setup_host_mem(ndev)) | |
3248 | goto reset; | |
3249 | ||
d916b1be | 3250 | return 0; |
e5ad96f3 KB |
3251 | reset: |
3252 | return nvme_try_sched_reset(ctrl); | |
d916b1be KB |
3253 | } |
3254 | ||
cd638946 KB |
3255 | static int nvme_suspend(struct device *dev) |
3256 | { | |
3257 | struct pci_dev *pdev = to_pci_dev(dev); | |
3258 | struct nvme_dev *ndev = pci_get_drvdata(pdev); | |
d916b1be KB |
3259 | struct nvme_ctrl *ctrl = &ndev->ctrl; |
3260 | int ret = -EBUSY; | |
3261 | ||
4eaefe8c RW |
3262 | ndev->last_ps = U32_MAX; |
3263 | ||
d916b1be KB |
3264 | /* |
3265 | * The platform does not remove power for a kernel managed suspend so | |
3266 | * use host managed nvme power settings for lowest idle power if | |
3267 | * possible. This should have quicker resume latency than a full device | |
3268 | * shutdown. But if the firmware is involved after the suspend or the | |
3269 | * device does not support any non-default power states, shut down the | |
3270 | * device fully. | |
4eaefe8c RW |
3271 | * |
3272 | * If ASPM is not enabled for the device, shut down the device and allow | |
3273 | * the PCI bus layer to put it into D3 in order to take the PCIe link | |
3274 | * down, so as to allow the platform to achieve its minimum low-power | |
3275 | * state (which may not be possible if the link is up). | |
d916b1be | 3276 | */ |
4eaefe8c | 3277 | if (pm_suspend_via_firmware() || !ctrl->npss || |
cb32de1b | 3278 | !pcie_aspm_enabled(pdev) || |
c1ac9a4b KB |
3279 | (ndev->ctrl.quirks & NVME_QUIRK_SIMPLE_SUSPEND)) |
3280 | return nvme_disable_prepare_reset(ndev, true); | |
d916b1be KB |
3281 | |
3282 | nvme_start_freeze(ctrl); | |
3283 | nvme_wait_freeze(ctrl); | |
3284 | nvme_sync_queues(ctrl); | |
3285 | ||
5d02a5c1 | 3286 | if (ctrl->state != NVME_CTRL_LIVE) |
d916b1be KB |
3287 | goto unfreeze; |
3288 | ||
e5ad96f3 KB |
3289 | /* |
3290 | * Host memory access may not be successful in a system suspend state, | |
3291 | * but the specification allows the controller to access memory in a | |
3292 | * non-operational power state. | |
3293 | */ | |
3294 | if (ndev->hmb) { | |
3295 | ret = nvme_set_host_mem(ndev, 0); | |
3296 | if (ret < 0) | |
3297 | goto unfreeze; | |
3298 | } | |
3299 | ||
d916b1be KB |
3300 | ret = nvme_get_power_state(ctrl, &ndev->last_ps); |
3301 | if (ret < 0) | |
3302 | goto unfreeze; | |
3303 | ||
7cbb5c6f ML |
3304 | /* |
3305 | * A saved state prevents pci pm from generically controlling the | |
3306 | * device's power. If we're using protocol specific settings, we don't | |
3307 | * want pci interfering. | |
3308 | */ | |
3309 | pci_save_state(pdev); | |
3310 | ||
d916b1be KB |
3311 | ret = nvme_set_power_state(ctrl, ctrl->npss); |
3312 | if (ret < 0) | |
3313 | goto unfreeze; | |
3314 | ||
3315 | if (ret) { | |
7cbb5c6f ML |
3316 | /* discard the saved state */ |
3317 | pci_load_saved_state(pdev, NULL); | |
3318 | ||
d916b1be KB |
3319 | /* |
3320 | * Clearing npss forces a controller reset on resume. The | |
05d3046f | 3321 | * correct value will be rediscovered then. |
d916b1be | 3322 | */ |
c1ac9a4b | 3323 | ret = nvme_disable_prepare_reset(ndev, true); |
d916b1be | 3324 | ctrl->npss = 0; |
d916b1be | 3325 | } |
d916b1be KB |
3326 | unfreeze: |
3327 | nvme_unfreeze(ctrl); | |
3328 | return ret; | |
3329 | } | |
3330 | ||
3331 | static int nvme_simple_suspend(struct device *dev) | |
3332 | { | |
3333 | struct nvme_dev *ndev = pci_get_drvdata(to_pci_dev(dev)); | |
4e523547 | 3334 | |
c1ac9a4b | 3335 | return nvme_disable_prepare_reset(ndev, true); |
cd638946 KB |
3336 | } |
3337 | ||
d916b1be | 3338 | static int nvme_simple_resume(struct device *dev) |
cd638946 KB |
3339 | { |
3340 | struct pci_dev *pdev = to_pci_dev(dev); | |
3341 | struct nvme_dev *ndev = pci_get_drvdata(pdev); | |
cd638946 | 3342 | |
c1ac9a4b | 3343 | return nvme_try_sched_reset(&ndev->ctrl); |
cd638946 KB |
3344 | } |
3345 | ||
21774222 | 3346 | static const struct dev_pm_ops nvme_dev_pm_ops = { |
d916b1be KB |
3347 | .suspend = nvme_suspend, |
3348 | .resume = nvme_resume, | |
3349 | .freeze = nvme_simple_suspend, | |
3350 | .thaw = nvme_simple_resume, | |
3351 | .poweroff = nvme_simple_suspend, | |
3352 | .restore = nvme_simple_resume, | |
3353 | }; | |
3354 | #endif /* CONFIG_PM_SLEEP */ | |
b60503ba | 3355 | |
a0a3408e KB |
3356 | static pci_ers_result_t nvme_error_detected(struct pci_dev *pdev, |
3357 | pci_channel_state_t state) | |
3358 | { | |
3359 | struct nvme_dev *dev = pci_get_drvdata(pdev); | |
3360 | ||
3361 | /* | |
3362 | * A frozen channel requires a reset. When detected, this method will | |
3363 | * shutdown the controller to quiesce. The controller will be restarted | |
3364 | * after the slot reset through driver's slot_reset callback. | |
3365 | */ | |
a0a3408e KB |
3366 | switch (state) { |
3367 | case pci_channel_io_normal: | |
3368 | return PCI_ERS_RESULT_CAN_RECOVER; | |
3369 | case pci_channel_io_frozen: | |
d011fb31 KB |
3370 | dev_warn(dev->ctrl.device, |
3371 | "frozen state error detected, reset controller\n"); | |
a5cdb68c | 3372 | nvme_dev_disable(dev, false); |
a0a3408e KB |
3373 | return PCI_ERS_RESULT_NEED_RESET; |
3374 | case pci_channel_io_perm_failure: | |
d011fb31 KB |
3375 | dev_warn(dev->ctrl.device, |
3376 | "failure state error detected, request disconnect\n"); | |
a0a3408e KB |
3377 | return PCI_ERS_RESULT_DISCONNECT; |
3378 | } | |
3379 | return PCI_ERS_RESULT_NEED_RESET; | |
3380 | } | |
3381 | ||
3382 | static pci_ers_result_t nvme_slot_reset(struct pci_dev *pdev) | |
3383 | { | |
3384 | struct nvme_dev *dev = pci_get_drvdata(pdev); | |
3385 | ||
1b3c47c1 | 3386 | dev_info(dev->ctrl.device, "restart after slot reset\n"); |
a0a3408e | 3387 | pci_restore_state(pdev); |
d86c4d8e | 3388 | nvme_reset_ctrl(&dev->ctrl); |
a0a3408e KB |
3389 | return PCI_ERS_RESULT_RECOVERED; |
3390 | } | |
3391 | ||
3392 | static void nvme_error_resume(struct pci_dev *pdev) | |
3393 | { | |
72cd4cc2 KB |
3394 | struct nvme_dev *dev = pci_get_drvdata(pdev); |
3395 | ||
3396 | flush_work(&dev->ctrl.reset_work); | |
a0a3408e KB |
3397 | } |
3398 | ||
1d352035 | 3399 | static const struct pci_error_handlers nvme_err_handler = { |
b60503ba | 3400 | .error_detected = nvme_error_detected, |
b60503ba MW |
3401 | .slot_reset = nvme_slot_reset, |
3402 | .resume = nvme_error_resume, | |
775755ed CH |
3403 | .reset_prepare = nvme_reset_prepare, |
3404 | .reset_done = nvme_reset_done, | |
b60503ba MW |
3405 | }; |
3406 | ||
6eb0d698 | 3407 | static const struct pci_device_id nvme_id_table[] = { |
972b13e2 | 3408 | { PCI_VDEVICE(INTEL, 0x0953), /* Intel 750/P3500/P3600/P3700 */ |
08095e70 | 3409 | .driver_data = NVME_QUIRK_STRIPE_SIZE | |
e850fd16 | 3410 | NVME_QUIRK_DEALLOCATE_ZEROES, }, |
972b13e2 | 3411 | { PCI_VDEVICE(INTEL, 0x0a53), /* Intel P3520 */ |
99466e70 | 3412 | .driver_data = NVME_QUIRK_STRIPE_SIZE | |
e850fd16 | 3413 | NVME_QUIRK_DEALLOCATE_ZEROES, }, |
972b13e2 | 3414 | { PCI_VDEVICE(INTEL, 0x0a54), /* Intel P4500/P4600 */ |
99466e70 | 3415 | .driver_data = NVME_QUIRK_STRIPE_SIZE | |
25e58af4 WZ |
3416 | NVME_QUIRK_DEALLOCATE_ZEROES | |
3417 | NVME_QUIRK_IGNORE_DEV_SUBNQN, }, | |
972b13e2 | 3418 | { PCI_VDEVICE(INTEL, 0x0a55), /* Dell Express Flash P4600 */ |
f99cb7af DWF |
3419 | .driver_data = NVME_QUIRK_STRIPE_SIZE | |
3420 | NVME_QUIRK_DEALLOCATE_ZEROES, }, | |
50af47d0 | 3421 | { PCI_VDEVICE(INTEL, 0xf1a5), /* Intel 600P/P3100 */ |
9abd68ef | 3422 | .driver_data = NVME_QUIRK_NO_DEEPEST_PS | |
6c6aa2f2 | 3423 | NVME_QUIRK_MEDIUM_PRIO_SQ | |
ce4cc313 DM |
3424 | NVME_QUIRK_NO_TEMP_THRESH_CHANGE | |
3425 | NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
6299358d JD |
3426 | { PCI_VDEVICE(INTEL, 0xf1a6), /* Intel 760p/Pro 7600p */ |
3427 | .driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN, }, | |
540c801c | 3428 | { PCI_VDEVICE(INTEL, 0x5845), /* Qemu emulated controller */ |
7b210e4e | 3429 | .driver_data = NVME_QUIRK_IDENTIFY_CNS | |
66dd346b CH |
3430 | NVME_QUIRK_DISABLE_WRITE_ZEROES | |
3431 | NVME_QUIRK_BOGUS_NID, }, | |
3432 | { PCI_VDEVICE(REDHAT, 0x0010), /* Qemu emulated controller */ | |
3433 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
5bedd3af | 3434 | { PCI_DEVICE(0x126f, 0x2263), /* Silicon Motion unidentified */ |
c98a8793 KB |
3435 | .driver_data = NVME_QUIRK_NO_NS_DESC_LIST | |
3436 | NVME_QUIRK_BOGUS_NID, }, | |
0302ae60 | 3437 | { PCI_DEVICE(0x1bb1, 0x0100), /* Seagate Nytro Flash Storage */ |
5e112d3f JE |
3438 | .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY | |
3439 | NVME_QUIRK_NO_NS_DESC_LIST, }, | |
54adc010 GP |
3440 | { PCI_DEVICE(0x1c58, 0x0003), /* HGST adapter */ |
3441 | .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, }, | |
8c97eecc JL |
3442 | { PCI_DEVICE(0x1c58, 0x0023), /* WDC SN200 adapter */ |
3443 | .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, }, | |
015282c9 WW |
3444 | { PCI_DEVICE(0x1c5f, 0x0540), /* Memblaze Pblaze4 adapter */ |
3445 | .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, }, | |
d554b5e1 MP |
3446 | { PCI_DEVICE(0x144d, 0xa821), /* Samsung PM1725 */ |
3447 | .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY, }, | |
3448 | { PCI_DEVICE(0x144d, 0xa822), /* Samsung PM1725a */ | |
7ee5c78c | 3449 | .driver_data = NVME_QUIRK_DELAY_BEFORE_CHK_RDY | |
abbb5f59 | 3450 | NVME_QUIRK_DISABLE_WRITE_ZEROES| |
7ee5c78c | 3451 | NVME_QUIRK_IGNORE_DEV_SUBNQN, }, |
2cf7a77e KB |
3452 | { PCI_DEVICE(0x1987, 0x5012), /* Phison E12 */ |
3453 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
c9e95c39 | 3454 | { PCI_DEVICE(0x1987, 0x5016), /* Phison E16 */ |
73029c9b KB |
3455 | .driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN | |
3456 | NVME_QUIRK_BOGUS_NID, }, | |
d14c2731 TH |
3457 | { PCI_DEVICE(0x1987, 0x5019), /* phison E19 */ |
3458 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
3459 | { PCI_DEVICE(0x1987, 0x5021), /* Phison E21 */ | |
3460 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
6e6a6828 PT |
3461 | { PCI_DEVICE(0x1b4b, 0x1092), /* Lexar 256 GB SSD */ |
3462 | .driver_data = NVME_QUIRK_NO_NS_DESC_LIST | | |
3463 | NVME_QUIRK_IGNORE_DEV_SUBNQN, }, | |
e1c70d79 LVS |
3464 | { PCI_DEVICE(0x1cc1, 0x33f8), /* ADATA IM2P33F8ABR1 1 TB */ |
3465 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
08b903b5 | 3466 | { PCI_DEVICE(0x10ec, 0x5762), /* ADATA SX6000LNP */ |
1629de0e PG |
3467 | .driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN | |
3468 | NVME_QUIRK_BOGUS_NID, }, | |
f03e42c6 GC |
3469 | { PCI_DEVICE(0x1cc1, 0x8201), /* ADATA SX8200PNP 512GB */ |
3470 | .driver_data = NVME_QUIRK_NO_DEEPEST_PS | | |
3471 | NVME_QUIRK_IGNORE_DEV_SUBNQN, }, | |
41f38043 LS |
3472 | { PCI_DEVICE(0x1344, 0x5407), /* Micron Technology Inc NVMe SSD */ |
3473 | .driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN }, | |
5611ec2b KHF |
3474 | { PCI_DEVICE(0x1c5c, 0x1504), /* SK Hynix PC400 */ |
3475 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
c4f01a77 KB |
3476 | { PCI_DEVICE(0x1c5c, 0x174a), /* SK Hynix P31 SSD */ |
3477 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
02ca079c KHF |
3478 | { PCI_DEVICE(0x15b7, 0x2001), /* Sandisk Skyhawk */ |
3479 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
89919929 CK |
3480 | { PCI_DEVICE(0x1d97, 0x2263), /* SPCC */ |
3481 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
43047e08 | 3482 | { PCI_DEVICE(0x144d, 0xa80b), /* Samsung PM9B1 256G and 512G */ |
3483 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
3484 | { PCI_DEVICE(0x144d, 0xa809), /* Samsung MZALQ256HBJD 256G */ | |
3485 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
3486 | { PCI_DEVICE(0x1cc4, 0x6303), /* UMIS RPJTJ512MGE1QDY 512G */ | |
3487 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
3488 | { PCI_DEVICE(0x1cc4, 0x6302), /* UMIS RPJTJ256MGE1QDY 256G */ | |
3489 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
dc22c1c0 ZB |
3490 | { PCI_DEVICE(0x2646, 0x2262), /* KINGSTON SKC2000 NVMe SSD */ |
3491 | .driver_data = NVME_QUIRK_NO_DEEPEST_PS, }, | |
538e4a8c TL |
3492 | { PCI_DEVICE(0x2646, 0x2263), /* KINGSTON A2000 NVMe SSD */ |
3493 | .driver_data = NVME_QUIRK_NO_DEEPEST_PS, }, | |
ac9b57d4 XL |
3494 | { PCI_DEVICE(0x2646, 0x5018), /* KINGSTON OM8SFP4xxxxP OS21012 NVMe SSD */ |
3495 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
3496 | { PCI_DEVICE(0x2646, 0x5016), /* KINGSTON OM3PGP4xxxxP OS21011 NVMe SSD */ | |
3497 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
3498 | { PCI_DEVICE(0x2646, 0x501A), /* KINGSTON OM8PGP4xxxxP OS21005 NVMe SSD */ | |
3499 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
3500 | { PCI_DEVICE(0x2646, 0x501B), /* KINGSTON OM8PGP4xxxxQ OS21005 NVMe SSD */ | |
3501 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
3502 | { PCI_DEVICE(0x2646, 0x501E), /* KINGSTON OM3PGP4xxxxQ OS21011 NVMe SSD */ | |
3503 | .driver_data = NVME_QUIRK_DISABLE_WRITE_ZEROES, }, | |
70ce3455 CH |
3504 | { PCI_DEVICE(0x1e4B, 0x1001), /* MAXIO MAP1001 */ |
3505 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
a98a945b CH |
3506 | { PCI_DEVICE(0x1e4B, 0x1002), /* MAXIO MAP1002 */ |
3507 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
3508 | { PCI_DEVICE(0x1e4B, 0x1202), /* MAXIO MAP1202 */ | |
3509 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
3765fad5 SR |
3510 | { PCI_DEVICE(0x1cc1, 0x5350), /* ADATA XPG GAMMIX S50 */ |
3511 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
f37527a0 DK |
3512 | { PCI_DEVICE(0x1dbe, 0x5236), /* ADATA XPG GAMMIX S70 */ |
3513 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
d5d3c100 XR |
3514 | { PCI_DEVICE(0x1e49, 0x0021), /* ZHITAI TiPro5000 NVMe SSD */ |
3515 | .driver_data = NVME_QUIRK_NO_DEEPEST_PS, }, | |
6b961bce NW |
3516 | { PCI_DEVICE(0x1e49, 0x0041), /* ZHITAI TiPro7000 NVMe SSD */ |
3517 | .driver_data = NVME_QUIRK_NO_DEEPEST_PS, }, | |
d6c52fa3 TG |
3518 | { PCI_DEVICE(0xc0a9, 0x540a), /* Crucial P2 */ |
3519 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
200dccd0 SA |
3520 | { PCI_DEVICE(0x1d97, 0x2263), /* Lexar NM610 */ |
3521 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
80b26240 A |
3522 | { PCI_DEVICE(0x1d97, 0x2269), /* Lexar NM760 */ |
3523 | .driver_data = NVME_QUIRK_BOGUS_NID, }, | |
4bdf2603 FS |
3524 | { PCI_DEVICE(PCI_VENDOR_ID_AMAZON, 0x0061), |
3525 | .driver_data = NVME_QUIRK_DMA_ADDRESS_BITS_48, }, | |
3526 | { PCI_DEVICE(PCI_VENDOR_ID_AMAZON, 0x0065), | |
3527 | .driver_data = NVME_QUIRK_DMA_ADDRESS_BITS_48, }, | |
3528 | { PCI_DEVICE(PCI_VENDOR_ID_AMAZON, 0x8061), | |
3529 | .driver_data = NVME_QUIRK_DMA_ADDRESS_BITS_48, }, | |
3530 | { PCI_DEVICE(PCI_VENDOR_ID_AMAZON, 0xcd00), | |
3531 | .driver_data = NVME_QUIRK_DMA_ADDRESS_BITS_48, }, | |
3532 | { PCI_DEVICE(PCI_VENDOR_ID_AMAZON, 0xcd01), | |
3533 | .driver_data = NVME_QUIRK_DMA_ADDRESS_BITS_48, }, | |
3534 | { PCI_DEVICE(PCI_VENDOR_ID_AMAZON, 0xcd02), | |
3535 | .driver_data = NVME_QUIRK_DMA_ADDRESS_BITS_48, }, | |
98f7b86a AS |
3536 | { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001), |
3537 | .driver_data = NVME_QUIRK_SINGLE_VECTOR }, | |
124298bd | 3538 | { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2003) }, |
66341331 BH |
3539 | { PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2005), |
3540 | .driver_data = NVME_QUIRK_SINGLE_VECTOR | | |
d38e9f04 | 3541 | NVME_QUIRK_128_BYTES_SQES | |
a2941f6a KB |
3542 | NVME_QUIRK_SHARED_TAGS | |
3543 | NVME_QUIRK_SKIP_CID_GEN }, | |
0b85f59d | 3544 | { PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) }, |
b60503ba MW |
3545 | { 0, } |
3546 | }; | |
3547 | MODULE_DEVICE_TABLE(pci, nvme_id_table); | |
3548 | ||
3549 | static struct pci_driver nvme_driver = { | |
3550 | .name = "nvme", | |
3551 | .id_table = nvme_id_table, | |
3552 | .probe = nvme_probe, | |
8d85fce7 | 3553 | .remove = nvme_remove, |
09ece142 | 3554 | .shutdown = nvme_shutdown, |
cd638946 | 3555 | .driver = { |
eac3ef26 CH |
3556 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
3557 | #ifdef CONFIG_PM_SLEEP | |
3558 | .pm = &nvme_dev_pm_ops, | |
d916b1be | 3559 | #endif |
eac3ef26 | 3560 | }, |
74d986ab | 3561 | .sriov_configure = pci_sriov_configure_simple, |
b60503ba MW |
3562 | .err_handler = &nvme_err_handler, |
3563 | }; | |
3564 | ||
3565 | static int __init nvme_init(void) | |
3566 | { | |
81101540 CH |
3567 | BUILD_BUG_ON(sizeof(struct nvme_create_cq) != 64); |
3568 | BUILD_BUG_ON(sizeof(struct nvme_create_sq) != 64); | |
3569 | BUILD_BUG_ON(sizeof(struct nvme_delete_queue) != 64); | |
612b7286 | 3570 | BUILD_BUG_ON(IRQ_AFFINITY_MAX_SETS < 2); |
c372cdd1 KB |
3571 | BUILD_BUG_ON(DIV_ROUND_UP(nvme_pci_npages_prp(), NVME_CTRL_PAGE_SIZE) > |
3572 | S8_MAX); | |
17c33167 | 3573 | |
9a6327d2 | 3574 | return pci_register_driver(&nvme_driver); |
b60503ba MW |
3575 | } |
3576 | ||
3577 | static void __exit nvme_exit(void) | |
3578 | { | |
3579 | pci_unregister_driver(&nvme_driver); | |
03e0f3a6 | 3580 | flush_workqueue(nvme_wq); |
b60503ba MW |
3581 | } |
3582 | ||
3583 | MODULE_AUTHOR("Matthew Wilcox <willy@linux.intel.com>"); | |
3584 | MODULE_LICENSE("GPL"); | |
c78b4713 | 3585 | MODULE_VERSION("1.0"); |
b60503ba MW |
3586 | module_init(nvme_init); |
3587 | module_exit(nvme_exit); |