| superpipe.c (b070545db112e4c815fbfce25449495eff20c170) | superpipe.c (af2047ec00bfd61b46b653e856dcf1e0bc567619) |
|---|---|
| 1/* 2 * CXL Flash Device Driver 3 * 4 * Written by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>, IBM Corporation 5 * Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation 6 * 7 * Copyright (C) 2015 IBM Corporation 8 * --- 800 unchanged lines hidden (view full) --- 809/** 810 * init_context() - initializes a previously allocated context 811 * @ctxi: Previously allocated context 812 * @cfg: Internal structure associated with the host. 813 * @ctx: Previously obtained context cookie. 814 * @ctxid: Previously obtained process element associated with CXL context. 815 * @file: Previously obtained file associated with CXL context. 816 * @perms: User-specified permissions. | 1/* 2 * CXL Flash Device Driver 3 * 4 * Written by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>, IBM Corporation 5 * Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation 6 * 7 * Copyright (C) 2015 IBM Corporation 8 * --- 800 unchanged lines hidden (view full) --- 809/** 810 * init_context() - initializes a previously allocated context 811 * @ctxi: Previously allocated context 812 * @cfg: Internal structure associated with the host. 813 * @ctx: Previously obtained context cookie. 814 * @ctxid: Previously obtained process element associated with CXL context. 815 * @file: Previously obtained file associated with CXL context. 816 * @perms: User-specified permissions. |
| 817 * @irqs: User-specified number of interrupts. |
|
| 817 */ 818static void init_context(struct ctx_info *ctxi, struct cxlflash_cfg *cfg, | 818 */ 819static void init_context(struct ctx_info *ctxi, struct cxlflash_cfg *cfg, |
| 819 void *ctx, int ctxid, struct file *file, u32 perms) | 820 void *ctx, int ctxid, struct file *file, u32 perms, 821 u64 irqs) |
| 820{ 821 struct afu *afu = cfg->afu; 822 823 ctxi->rht_perms = perms; 824 ctxi->ctrl_map = &afu->afu_map->ctrls[ctxid].ctrl; 825 ctxi->ctxid = ENCODE_CTXID(ctxi, ctxid); | 822{ 823 struct afu *afu = cfg->afu; 824 825 ctxi->rht_perms = perms; 826 ctxi->ctrl_map = &afu->afu_map->ctrls[ctxid].ctrl; 827 ctxi->ctxid = ENCODE_CTXID(ctxi, ctxid); |
| 828 ctxi->irqs = irqs; |
|
| 826 ctxi->pid = task_tgid_nr(current); /* tgid = pid */ 827 ctxi->ctx = ctx; 828 ctxi->cfg = cfg; 829 ctxi->file = file; 830 ctxi->initialized = true; 831 mutex_init(&ctxi->mutex); 832 kref_init(&ctxi->kref); 833 INIT_LIST_HEAD(&ctxi->luns); --- 473 unchanged lines hidden (view full) --- 1307 struct llun_info *lli = sdev->hostdata; 1308 struct glun_info *gli = lli->parent; 1309 struct cxl_ioctl_start_work *work; 1310 struct ctx_info *ctxi = NULL; 1311 struct lun_access *lun_access = NULL; 1312 int rc = 0; 1313 u32 perms; 1314 int ctxid = -1; | 829 ctxi->pid = task_tgid_nr(current); /* tgid = pid */ 830 ctxi->ctx = ctx; 831 ctxi->cfg = cfg; 832 ctxi->file = file; 833 ctxi->initialized = true; 834 mutex_init(&ctxi->mutex); 835 kref_init(&ctxi->kref); 836 INIT_LIST_HEAD(&ctxi->luns); --- 473 unchanged lines hidden (view full) --- 1310 struct llun_info *lli = sdev->hostdata; 1311 struct glun_info *gli = lli->parent; 1312 struct cxl_ioctl_start_work *work; 1313 struct ctx_info *ctxi = NULL; 1314 struct lun_access *lun_access = NULL; 1315 int rc = 0; 1316 u32 perms; 1317 int ctxid = -1; |
| 1318 u64 irqs = attach->num_interrupts; |
|
| 1315 u64 flags = 0UL; 1316 u64 rctxid = 0UL; 1317 struct file *file = NULL; 1318 1319 void *ctx = NULL; 1320 1321 int fd = -1; 1322 | 1319 u64 flags = 0UL; 1320 u64 rctxid = 0UL; 1321 struct file *file = NULL; 1322 1323 void *ctx = NULL; 1324 1325 int fd = -1; 1326 |
| 1323 if (attach->num_interrupts > 4) { | 1327 if (irqs > 4) { |
| 1324 dev_dbg(dev, "%s: Cannot support this many interrupts %llu\n", | 1328 dev_dbg(dev, "%s: Cannot support this many interrupts %llu\n", |
| 1325 __func__, attach->num_interrupts); | 1329 __func__, irqs); |
| 1326 rc = -EINVAL; 1327 goto out; 1328 } 1329 1330 if (gli->max_lba == 0) { 1331 dev_dbg(dev, "%s: No capacity info for LUN=%016llx\n", 1332 __func__, lli->lun_id[sdev->channel]); 1333 rc = read_cap16(sdev, lli); --- 63 unchanged lines hidden (view full) --- 1397 if (IS_ERR_OR_NULL(ctx)) { 1398 dev_err(dev, "%s: Could not initialize context %p\n", 1399 __func__, ctx); 1400 rc = -ENODEV; 1401 goto err; 1402 } 1403 1404 work = &ctxi->work; | 1330 rc = -EINVAL; 1331 goto out; 1332 } 1333 1334 if (gli->max_lba == 0) { 1335 dev_dbg(dev, "%s: No capacity info for LUN=%016llx\n", 1336 __func__, lli->lun_id[sdev->channel]); 1337 rc = read_cap16(sdev, lli); --- 63 unchanged lines hidden (view full) --- 1401 if (IS_ERR_OR_NULL(ctx)) { 1402 dev_err(dev, "%s: Could not initialize context %p\n", 1403 __func__, ctx); 1404 rc = -ENODEV; 1405 goto err; 1406 } 1407 1408 work = &ctxi->work; |
| 1405 work->num_interrupts = attach->num_interrupts; | 1409 work->num_interrupts = irqs; |
| 1406 work->flags = CXL_START_WORK_NUM_IRQS; 1407 1408 rc = cxl_start_work(ctx, work); 1409 if (unlikely(rc)) { 1410 dev_dbg(dev, "%s: Could not start context rc=%d\n", 1411 __func__, rc); 1412 goto err; 1413 } --- 11 unchanged lines hidden (view full) --- 1425 dev_err(dev, "%s: Could not get file descriptor\n", __func__); 1426 goto err; 1427 } 1428 1429 /* Translate read/write O_* flags from fcntl.h to AFU permission bits */ 1430 perms = SISL_RHT_PERM(attach->hdr.flags + 1); 1431 1432 /* Context mutex is locked upon return */ | 1410 work->flags = CXL_START_WORK_NUM_IRQS; 1411 1412 rc = cxl_start_work(ctx, work); 1413 if (unlikely(rc)) { 1414 dev_dbg(dev, "%s: Could not start context rc=%d\n", 1415 __func__, rc); 1416 goto err; 1417 } --- 11 unchanged lines hidden (view full) --- 1429 dev_err(dev, "%s: Could not get file descriptor\n", __func__); 1430 goto err; 1431 } 1432 1433 /* Translate read/write O_* flags from fcntl.h to AFU permission bits */ 1434 perms = SISL_RHT_PERM(attach->hdr.flags + 1); 1435 1436 /* Context mutex is locked upon return */ |
| 1433 init_context(ctxi, cfg, ctx, ctxid, file, perms); | 1437 init_context(ctxi, cfg, ctx, ctxid, file, perms, irqs); |
| 1434 1435 rc = afu_attach(cfg, ctxi); 1436 if (unlikely(rc)) { 1437 dev_err(dev, "%s: Could not attach AFU rc %d\n", __func__, rc); 1438 goto err; 1439 } 1440 1441 /* --- 770 unchanged lines hidden --- | 1438 1439 rc = afu_attach(cfg, ctxi); 1440 if (unlikely(rc)) { 1441 dev_err(dev, "%s: Could not attach AFU rc %d\n", __func__, rc); 1442 goto err; 1443 } 1444 1445 /* --- 770 unchanged lines hidden --- |