[asahilinux:bits/050-nvme 6/9] drivers/nvme/host/apple.c:291:19: sparse: sparse: incorrect type in assignment (different base types)

From: kernel test robot
Date: Sat Jun 25 2022 - 03:56:09 EST

Next message: Christoph Hellwig: "Re: [asahilinux:bits/050-nvme 6/9] drivers/nvme/host/apple.c:291:19: sparse: sparse: incorrect type in assignment (different base types)"
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tree: https://github.com/AsahiLinux/linux bits/050-nvme
head: 54dfe8ce63a23f4a11e9aa0481a09a6ec2267b2f
commit: 01cb5f6fdaf932ffa3f466b17a146e5784e19947 [6/9] nvme-apple: Add initial Apple SoC NVMe driver
config: openrisc-randconfig-s031-20220625
compiler: or1k-linux-gcc (GCC) 11.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-31-g4880bd19-dirty
# https://github.com/AsahiLinux/linux/commit/01cb5f6fdaf932ffa3f466b17a146e5784e19947
git remote add asahilinux https://github.com/AsahiLinux/linux
git fetch --no-tags asahilinux bits/050-nvme
git checkout 01cb5f6fdaf932ffa3f466b17a146e5784e19947
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=openrisc SHELL=/bin/bash drivers/nvme/host/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

sparse warnings: (new ones prefixed by >>)
>> drivers/nvme/host/apple.c:291:19: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] prp1 @@ got restricted __le64 [usertype] prp1 @@
drivers/nvme/host/apple.c:291:19: sparse: expected unsigned long long [usertype] prp1
drivers/nvme/host/apple.c:291:19: sparse: got restricted __le64 [usertype] prp1
>> drivers/nvme/host/apple.c:292:19: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] prp2 @@ got restricted __le64 [usertype] prp2 @@
drivers/nvme/host/apple.c:292:19: sparse: expected unsigned long long [usertype] prp2
drivers/nvme/host/apple.c:292:19: sparse: got restricted __le64 [usertype] prp2
>> drivers/nvme/host/apple.c:293:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] length @@ got restricted __le16 [usertype] length @@
drivers/nvme/host/apple.c:293:21: sparse: expected unsigned int [usertype] length
drivers/nvme/host/apple.c:293:21: sparse: got restricted __le16 [usertype] length
>> drivers/nvme/host/apple.c:351:52: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned int [usertype] next_dma_addr @@ got restricted __le64 [usertype] @@
drivers/nvme/host/apple.c:351:52: sparse: expected unsigned int [usertype] next_dma_addr
drivers/nvme/host/apple.c:351:52: sparse: got restricted __le64 [usertype]
>> drivers/nvme/host/apple.c:456:45: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le64 [usertype] @@ got unsigned int [addressable] [usertype] prp_dma @@
drivers/nvme/host/apple.c:456:45: sparse: expected restricted __le64 [usertype]
drivers/nvme/host/apple.c:456:45: sparse: got unsigned int [addressable] [usertype] prp_dma
>> drivers/nvme/host/apple.c:459:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le64 [usertype] @@ got unsigned long long [assigned] [usertype] dma_addr @@
drivers/nvme/host/apple.c:459:31: sparse: expected restricted __le64 [usertype]
drivers/nvme/host/apple.c:459:31: sparse: got unsigned long long [assigned] [usertype] dma_addr
>> drivers/nvme/host/apple.c:474:25: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le64 [usertype] prp1 @@ got unsigned int [usertype] dma_address @@
drivers/nvme/host/apple.c:474:25: sparse: expected restricted __le64 [usertype] prp1
drivers/nvme/host/apple.c:474:25: sparse: got unsigned int [usertype] dma_address
>> drivers/nvme/host/apple.c:475:25: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le64 [usertype] prp2 @@ got unsigned int [usertype] first_dma @@
drivers/nvme/host/apple.c:475:25: sparse: expected restricted __le64 [usertype] prp2
drivers/nvme/host/apple.c:475:25: sparse: got unsigned int [usertype] first_dma
>> drivers/nvme/host/apple.c:501:25: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le64 [usertype] prp1 @@ got unsigned int [usertype] first_dma @@
drivers/nvme/host/apple.c:501:25: sparse: expected restricted __le64 [usertype] prp1
drivers/nvme/host/apple.c:501:25: sparse: got unsigned int [usertype] first_dma
>> drivers/nvme/host/apple.c:503:33: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le64 [usertype] prp2 @@ got unsigned int @@
drivers/nvme/host/apple.c:503:33: sparse: expected restricted __le64 [usertype] prp2
drivers/nvme/host/apple.c:503:33: sparse: got unsigned int
>> drivers/nvme/host/apple.c:685:26: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le64 [assigned] [usertype] prp1 @@ got unsigned int [usertype] cq_dma_addr @@
drivers/nvme/host/apple.c:685:26: sparse: expected restricted __le64 [assigned] [usertype] prp1
drivers/nvme/host/apple.c:685:26: sparse: got unsigned int [usertype] cq_dma_addr
>> drivers/nvme/host/apple.c:686:26: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] cqid @@ got int @@
drivers/nvme/host/apple.c:686:26: sparse: expected restricted __le16 [assigned] [usertype] cqid
drivers/nvme/host/apple.c:686:26: sparse: got int
>> drivers/nvme/host/apple.c:687:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] qsize @@ got int @@
drivers/nvme/host/apple.c:687:27: sparse: expected restricted __le16 [assigned] [usertype] qsize
drivers/nvme/host/apple.c:687:27: sparse: got int
>> drivers/nvme/host/apple.c:688:30: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] cq_flags @@ got int @@
drivers/nvme/host/apple.c:688:30: sparse: expected restricted __le16 [assigned] [usertype] cq_flags
drivers/nvme/host/apple.c:688:30: sparse: got int
>> drivers/nvme/host/apple.c:699:28: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] qid @@ got int @@
drivers/nvme/host/apple.c:699:28: sparse: expected restricted __le16 [assigned] [usertype] qid
drivers/nvme/host/apple.c:699:28: sparse: got int
>> drivers/nvme/host/apple.c:713:26: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le64 [assigned] [usertype] prp1 @@ got unsigned int [usertype] sq_dma_addr @@
drivers/nvme/host/apple.c:713:26: sparse: expected restricted __le64 [assigned] [usertype] prp1
drivers/nvme/host/apple.c:713:26: sparse: got unsigned int [usertype] sq_dma_addr
>> drivers/nvme/host/apple.c:714:26: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] sqid @@ got int @@
drivers/nvme/host/apple.c:714:26: sparse: expected restricted __le16 [assigned] [usertype] sqid
drivers/nvme/host/apple.c:714:26: sparse: got int
drivers/nvme/host/apple.c:715:27: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] qsize @@ got int @@
drivers/nvme/host/apple.c:715:27: sparse: expected restricted __le16 [assigned] [usertype] qsize
drivers/nvme/host/apple.c:715:27: sparse: got int
>> drivers/nvme/host/apple.c:716:30: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] sq_flags @@ got int @@
drivers/nvme/host/apple.c:716:30: sparse: expected restricted __le16 [assigned] [usertype] sq_flags
drivers/nvme/host/apple.c:716:30: sparse: got int
drivers/nvme/host/apple.c:717:26: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] cqid @@ got int @@
drivers/nvme/host/apple.c:717:26: sparse: expected restricted __le16 [assigned] [usertype] cqid
drivers/nvme/host/apple.c:717:26: sparse: got int
drivers/nvme/host/apple.c:727:28: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le16 [assigned] [usertype] qid @@ got int @@
drivers/nvme/host/apple.c:727:28: sparse: expected restricted __le16 [assigned] [usertype] qid
drivers/nvme/host/apple.c:727:28: sparse: got int
>> drivers/nvme/host/apple.c:573:17: sparse: sparse: restricted __le16 degrades to integer

vim +291 drivers/nvme/host/apple.c

282
283 static void apple_nvme_submit_cmd(struct apple_nvme_queue *q,
284 struct nvme_command *cmd)
285 {
286 struct apple_nvme *anv = queue_to_apple_nvme(q);
287 u32 tag = nvme_tag_from_cid(cmd->common.command_id);
288 struct apple_nvmmu_tcb *tcb = &q->tcbs[tag];
289
290 tcb->opcode = cmd->common.opcode;
> 291 tcb->prp1 = cmd->common.dptr.prp1;
> 292 tcb->prp2 = cmd->common.dptr.prp2;
> 293 tcb->length = cmd->rw.length;
294 tcb->command_id = tag;
295
296 if (nvme_is_write(cmd))
297 tcb->dma_flags = APPLE_ANS_TCB_DMA_TO_DEVICE;
298 else
299 tcb->dma_flags = APPLE_ANS_TCB_DMA_FROM_DEVICE;
300
301 memcpy(&q->sqes[tag], cmd, sizeof(*cmd));
302
303 /*
304 * This lock here doesn't make much sense at a first glace but
305 * removing it will result in occasional missed completetion
306 * interrupts even though the commands still appear on the CQ.
307 * It's unclear why this happens but our best guess is that
308 * there is a bug in the firmware triggered when a new command
309 * is issued while we're inside the irq handler between the
310 * NVMMU invalidation (and making the tag available again)
311 * and the final CQ update.
312 */
313 spin_lock_irq(&anv->lock);
314 writel(tag, q->sq_db);
315 spin_unlock_irq(&anv->lock);
316 }
317
318 /*
319 * From pci.c:
320 * Will slightly overestimate the number of pages needed. This is OK
321 * as it only leads to a small amount of wasted memory for the lifetime of
322 * the I/O.
323 */
324 static inline size_t apple_nvme_iod_alloc_size(void)
325 {
326 const unsigned int nprps = DIV_ROUND_UP(
327 NVME_MAX_KB_SZ + NVME_CTRL_PAGE_SIZE, NVME_CTRL_PAGE_SIZE);
328 const int npages = DIV_ROUND_UP(8 * nprps, PAGE_SIZE - 8);
329 const size_t alloc_size = sizeof(__le64 *) * npages +
330 sizeof(struct scatterlist) * NVME_MAX_SEGS;
331
332 return alloc_size;
333 }
334
335 static void **apple_nvme_iod_list(struct request *req)
336 {
337 struct apple_nvme_iod *iod = blk_mq_rq_to_pdu(req);
338
339 return (void **)(iod->sg + blk_rq_nr_phys_segments(req));
340 }
341
342 static void apple_nvme_free_prps(struct apple_nvme *anv, struct request *req)
343 {
344 const int last_prp = NVME_CTRL_PAGE_SIZE / sizeof(__le64) - 1;
345 struct apple_nvme_iod *iod = blk_mq_rq_to_pdu(req);
346 dma_addr_t dma_addr = iod->first_dma;
347 int i;
348
349 for (i = 0; i < iod->npages; i++) {
350 __le64 *prp_list = apple_nvme_iod_list(req)[i];
> 351 dma_addr_t next_dma_addr = prp_list[last_prp];
352
353 dma_pool_free(anv->prp_page_pool, prp_list, dma_addr);
354 dma_addr = next_dma_addr;
355 }
356 }
357
358 static void apple_nvme_unmap_data(struct apple_nvme *anv, struct request *req)
359 {
360 struct apple_nvme_iod *iod = blk_mq_rq_to_pdu(req);
361
362 if (iod->dma_len) {
363 dma_unmap_page(anv->dev, iod->first_dma, iod->dma_len,
364 rq_dma_dir(req));
365 return;
366 }
367
368 WARN_ON_ONCE(!iod->nents);
369
370 dma_unmap_sg(anv->dev, iod->sg, iod->nents, rq_dma_dir(req));
371 if (iod->npages == 0)
372 dma_pool_free(anv->prp_small_pool, apple_nvme_iod_list(req)[0],
373 iod->first_dma);
374 else
375 apple_nvme_free_prps(anv, req);
376 mempool_free(iod->sg, anv->iod_mempool);
377 }
378
379 static void apple_nvme_print_sgl(struct scatterlist *sgl, int nents)
380 {
381 int i;
382 struct scatterlist *sg;
383
384 for_each_sg(sgl, sg, nents, i) {
385 dma_addr_t phys = sg_phys(sg);
386
387 pr_warn("sg[%d] phys_addr:%pad offset:%d length:%d dma_address:%pad dma_length:%d\n",
388 i, &phys, sg->offset, sg->length, &sg_dma_address(sg),
389 sg_dma_len(sg));
390 }
391 }
392
393 static blk_status_t apple_nvme_setup_prps(struct apple_nvme *anv,
394 struct request *req,
395 struct nvme_rw_command *cmnd)
396 {
397 struct apple_nvme_iod *iod = blk_mq_rq_to_pdu(req);
398 struct dma_pool *pool;
399 int length = blk_rq_payload_bytes(req);
400 struct scatterlist *sg = iod->sg;
401 int dma_len = sg_dma_len(sg);
402 u64 dma_addr = sg_dma_address(sg);
403 int offset = dma_addr & (NVME_CTRL_PAGE_SIZE - 1);
404 __le64 *prp_list;
405 void **list = apple_nvme_iod_list(req);
406 dma_addr_t prp_dma;
407 int nprps, i;
408
409 length -= (NVME_CTRL_PAGE_SIZE - offset);
410 if (length <= 0) {
411 iod->first_dma = 0;
412 goto done;
413 }
414
415 dma_len -= (NVME_CTRL_PAGE_SIZE - offset);
416 if (dma_len) {
417 dma_addr += (NVME_CTRL_PAGE_SIZE - offset);
418 } else {
419 sg = sg_next(sg);
420 dma_addr = sg_dma_address(sg);
421 dma_len = sg_dma_len(sg);
422 }
423
424 if (length <= NVME_CTRL_PAGE_SIZE) {
425 iod->first_dma = dma_addr;
426 goto done;
427 }
428
429 nprps = DIV_ROUND_UP(length, NVME_CTRL_PAGE_SIZE);
430 if (nprps <= (256 / 8)) {
431 pool = anv->prp_small_pool;
432 iod->npages = 0;
433 } else {
434 pool = anv->prp_page_pool;
435 iod->npages = 1;
436 }
437
438 prp_list = dma_pool_alloc(pool, GFP_ATOMIC, &prp_dma);
439 if (!prp_list) {
440 iod->first_dma = dma_addr;
441 iod->npages = -1;
442 return BLK_STS_RESOURCE;
443 }
444 list[0] = prp_list;
445 iod->first_dma = prp_dma;
446 i = 0;
447 for (;;) {
448 if (i == NVME_CTRL_PAGE_SIZE >> 3) {
449 __le64 *old_prp_list = prp_list;
450
451 prp_list = dma_pool_alloc(pool, GFP_ATOMIC, &prp_dma);
452 if (!prp_list)
453 goto free_prps;
454 list[iod->npages++] = prp_list;
455 prp_list[0] = old_prp_list[i - 1];
> 456 old_prp_list[i - 1] = prp_dma;
457 i = 1;
458 }
> 459 prp_list[i++] = dma_addr;
460 dma_len -= NVME_CTRL_PAGE_SIZE;
461 dma_addr += NVME_CTRL_PAGE_SIZE;
462 length -= NVME_CTRL_PAGE_SIZE;
463 if (length <= 0)
464 break;
465 if (dma_len > 0)
466 continue;
467 if (unlikely(dma_len < 0))
468 goto bad_sgl;
469 sg = sg_next(sg);
470 dma_addr = sg_dma_address(sg);
471 dma_len = sg_dma_len(sg);
472 }
473 done:
> 474 cmnd->dptr.prp1 = sg_dma_address(iod->sg);
> 475 cmnd->dptr.prp2 = iod->first_dma;
476 return BLK_STS_OK;
477 free_prps:
478 apple_nvme_free_prps(anv, req);
479 return BLK_STS_RESOURCE;
480 bad_sgl:
481 WARN(DO_ONCE(apple_nvme_print_sgl, iod->sg, iod->nents),
482 "Invalid SGL for payload:%d nents:%d\n", blk_rq_payload_bytes(req),
483 iod->nents);
484 return BLK_STS_IOERR;
485 }
486

--
0-DAY CI Kernel Test Service
https://01.org/lkp

Next message: Christoph Hellwig: "Re: [asahilinux:bits/050-nvme 6/9] drivers/nvme/host/apple.c:291:19: sparse: sparse: incorrect type in assignment (different base types)"
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