diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/cxl/cxl.h | 15 | ||||
| -rw-r--r-- | drivers/misc/cxl/debugfs.c | 36 | ||||
| -rw-r--r-- | drivers/misc/genwqe/card_base.c | 5 | ||||
| -rw-r--r-- | drivers/misc/genwqe/card_base.h | 2 | ||||
| -rw-r--r-- | drivers/misc/genwqe/card_debugfs.c | 165 | ||||
| -rw-r--r-- | drivers/misc/genwqe/card_dev.c | 6 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/core.c | 20 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/heap.c | 72 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/lkdtm.h | 5 | ||||
| -rw-r--r-- | drivers/misc/mei/debugfs.c | 47 | ||||
| -rw-r--r-- | drivers/misc/mei/main.c | 8 | ||||
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 7 | ||||
| -rw-r--r-- | drivers/misc/mic/card/mic_debugfs.c | 18 | ||||
| -rw-r--r-- | drivers/misc/mic/cosm/cosm_debugfs.c | 4 | ||||
| -rw-r--r-- | drivers/misc/mic/host/mic_debugfs.c | 4 | ||||
| -rw-r--r-- | drivers/misc/mic/scif/scif_debugfs.c | 5 | ||||
| -rw-r--r-- | drivers/misc/mic/vop/vop_debugfs.c | 4 | ||||
| -rw-r--r-- | drivers/misc/ocxl/config.c | 181 | ||||
| -rw-r--r-- | drivers/misc/ocxl/pci.c | 2 | ||||
| -rw-r--r-- | drivers/misc/ti-st/st_kim.c | 4 | ||||
| -rw-r--r-- | drivers/misc/vmw_balloon.c | 20 |
21 files changed, 316 insertions, 314 deletions
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h index a73c9e669d78..5dc0f6093f9d 100644 --- a/drivers/misc/cxl/cxl.h +++ b/drivers/misc/cxl/cxl.h @@ -908,11 +908,11 @@ void cxl_update_dedicated_ivtes_psl8(struct cxl_context *ctx); #ifdef CONFIG_DEBUG_FS -int cxl_debugfs_init(void); +void cxl_debugfs_init(void); void cxl_debugfs_exit(void); -int cxl_debugfs_adapter_add(struct cxl *adapter); +void cxl_debugfs_adapter_add(struct cxl *adapter); void cxl_debugfs_adapter_remove(struct cxl *adapter); -int cxl_debugfs_afu_add(struct cxl_afu *afu); +void cxl_debugfs_afu_add(struct cxl_afu *afu); void cxl_debugfs_afu_remove(struct cxl_afu *afu); void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir); void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir); @@ -921,27 +921,24 @@ void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir); #else /* CONFIG_DEBUG_FS */ -static inline int __init cxl_debugfs_init(void) +static inline void __init cxl_debugfs_init(void) { - return 0; } static inline void cxl_debugfs_exit(void) { } -static inline int cxl_debugfs_adapter_add(struct cxl *adapter) +static inline void cxl_debugfs_adapter_add(struct cxl *adapter) { - return 0; } static inline void cxl_debugfs_adapter_remove(struct cxl *adapter) { } -static inline int cxl_debugfs_afu_add(struct cxl_afu *afu) +static inline void cxl_debugfs_afu_add(struct cxl_afu *afu) { - return 0; } static inline void cxl_debugfs_afu_remove(struct cxl_afu *afu) diff --git a/drivers/misc/cxl/debugfs.c b/drivers/misc/cxl/debugfs.c index 1fda22c24c93..7b987bf498b5 100644 --- a/drivers/misc/cxl/debugfs.c +++ b/drivers/misc/cxl/debugfs.c @@ -26,11 +26,11 @@ static int debugfs_io_u64_set(void *data, u64 val) DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set, "0x%016llx\n"); -static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode, - struct dentry *parent, u64 __iomem *value) +static void debugfs_create_io_x64(const char *name, umode_t mode, + struct dentry *parent, u64 __iomem *value) { - return debugfs_create_file_unsafe(name, mode, parent, - (void __force *)value, &fops_io_x64); + debugfs_create_file_unsafe(name, mode, parent, (void __force *)value, + &fops_io_x64); } void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir) @@ -54,25 +54,22 @@ void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir) debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE)); } -int cxl_debugfs_adapter_add(struct cxl *adapter) +void cxl_debugfs_adapter_add(struct cxl *adapter) { struct dentry *dir; char buf[32]; if (!cxl_debugfs) - return -ENODEV; + return; snprintf(buf, 32, "card%i", adapter->adapter_num); dir = debugfs_create_dir(buf, cxl_debugfs); - if (IS_ERR(dir)) - return PTR_ERR(dir); adapter->debugfs = dir; debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE)); if (adapter->native->sl_ops->debugfs_add_adapter_regs) adapter->native->sl_ops->debugfs_add_adapter_regs(adapter, dir); - return 0; } void cxl_debugfs_adapter_remove(struct cxl *adapter) @@ -96,18 +93,16 @@ void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir) debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE)); } -int cxl_debugfs_afu_add(struct cxl_afu *afu) +void cxl_debugfs_afu_add(struct cxl_afu *afu) { struct dentry *dir; char buf[32]; if (!afu->adapter->debugfs) - return -ENODEV; + return; snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice); dir = debugfs_create_dir(buf, afu->adapter->debugfs); - if (IS_ERR(dir)) - return PTR_ERR(dir); afu->debugfs = dir; debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An)); @@ -118,8 +113,6 @@ int cxl_debugfs_afu_add(struct cxl_afu *afu) if (afu->adapter->native->sl_ops->debugfs_add_afu_regs) afu->adapter->native->sl_ops->debugfs_add_afu_regs(afu, dir); - - return 0; } void cxl_debugfs_afu_remove(struct cxl_afu *afu) @@ -127,19 +120,12 @@ void cxl_debugfs_afu_remove(struct cxl_afu *afu) debugfs_remove_recursive(afu->debugfs); } -int __init cxl_debugfs_init(void) +void __init cxl_debugfs_init(void) { - struct dentry *ent; - if (!cpu_has_feature(CPU_FTR_HVMODE)) - return 0; - - ent = debugfs_create_dir("cxl", NULL); - if (IS_ERR(ent)) - return PTR_ERR(ent); - cxl_debugfs = ent; + return; - return 0; + cxl_debugfs = debugfs_create_dir("cxl", NULL); } void cxl_debugfs_exit(void) diff --git a/drivers/misc/genwqe/card_base.c b/drivers/misc/genwqe/card_base.c index ab7f2cd21c93..1dc6c7c5cbce 100644 --- a/drivers/misc/genwqe/card_base.c +++ b/drivers/misc/genwqe/card_base.c @@ -1369,10 +1369,6 @@ static int __init genwqe_init_module(void) class_genwqe->devnode = genwqe_devnode; debugfs_genwqe = debugfs_create_dir(GENWQE_DEVNAME, NULL); - if (!debugfs_genwqe) { - rc = -ENOMEM; - goto err_out; - } rc = pci_register_driver(&genwqe_driver); if (rc != 0) { @@ -1384,7 +1380,6 @@ static int __init genwqe_init_module(void) err_out0: debugfs_remove(debugfs_genwqe); - err_out: class_destroy(class_genwqe); return rc; } diff --git a/drivers/misc/genwqe/card_base.h b/drivers/misc/genwqe/card_base.h index 2f6dd2f37942..0e902977d35f 100644 --- a/drivers/misc/genwqe/card_base.h +++ b/drivers/misc/genwqe/card_base.h @@ -437,7 +437,7 @@ int genwqe_device_create(struct genwqe_dev *cd); int genwqe_device_remove(struct genwqe_dev *cd); /* debugfs */ -int genwqe_init_debugfs(struct genwqe_dev *cd); +void genwqe_init_debugfs(struct genwqe_dev *cd); void genqwe_exit_debugfs(struct genwqe_dev *cd); int genwqe_read_softreset(struct genwqe_dev *cd); diff --git a/drivers/misc/genwqe/card_debugfs.c b/drivers/misc/genwqe/card_debugfs.c index 49c945d0c488..1b5b82e65268 100644 --- a/drivers/misc/genwqe/card_debugfs.c +++ b/drivers/misc/genwqe/card_debugfs.c @@ -316,11 +316,9 @@ static int info_show(struct seq_file *s, void *unused) DEFINE_SHOW_ATTRIBUTE(info); -int genwqe_init_debugfs(struct genwqe_dev *cd) +void genwqe_init_debugfs(struct genwqe_dev *cd) { struct dentry *root; - struct dentry *file; - int ret; char card_name[64]; char name[64]; unsigned int i; @@ -328,153 +326,50 @@ int genwqe_init_debugfs(struct genwqe_dev *cd) sprintf(card_name, "%s%d_card", GENWQE_DEVNAME, cd->card_idx); root = debugfs_create_dir(card_name, cd->debugfs_genwqe); - if (!root) { - ret = -ENOMEM; - goto err0; - } /* non privileged interfaces are done here */ - file = debugfs_create_file("ddcb_info", S_IRUGO, root, cd, - &ddcb_info_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("info", S_IRUGO, root, cd, - &info_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_x64("err_inject", 0666, root, &cd->err_inject); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_u32("ddcb_software_timeout", 0666, root, - &cd->ddcb_software_timeout); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_u32("kill_timeout", 0666, root, - &cd->kill_timeout); - if (!file) { - ret = -ENOMEM; - goto err1; - } + debugfs_create_file("ddcb_info", S_IRUGO, root, cd, &ddcb_info_fops); + debugfs_create_file("info", S_IRUGO, root, cd, &info_fops); + debugfs_create_x64("err_inject", 0666, root, &cd->err_inject); + debugfs_create_u32("ddcb_software_timeout", 0666, root, + &cd->ddcb_software_timeout); + debugfs_create_u32("kill_timeout", 0666, root, &cd->kill_timeout); /* privileged interfaces follow here */ if (!genwqe_is_privileged(cd)) { cd->debugfs_root = root; - return 0; + return; } - file = debugfs_create_file("curr_regs", S_IRUGO, root, cd, - &curr_regs_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd, - &curr_dbg_uid0_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd, - &curr_dbg_uid1_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd, - &curr_dbg_uid2_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("prev_regs", S_IRUGO, root, cd, - &prev_regs_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd, - &prev_dbg_uid0_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd, - &prev_dbg_uid1_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd, - &prev_dbg_uid2_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } + debugfs_create_file("curr_regs", S_IRUGO, root, cd, &curr_regs_fops); + debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd, + &curr_dbg_uid0_fops); + debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd, + &curr_dbg_uid1_fops); + debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd, + &curr_dbg_uid2_fops); + debugfs_create_file("prev_regs", S_IRUGO, root, cd, &prev_regs_fops); + debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd, + &prev_dbg_uid0_fops); + debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd, + &prev_dbg_uid1_fops); + debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd, + &prev_dbg_uid2_fops); for (i = 0; i < GENWQE_MAX_VFS; i++) { sprintf(name, "vf%u_jobtimeout_msec", i); - - file = debugfs_create_u32(name, 0666, root, - &cd->vf_jobtimeout_msec[i]); - if (!file) { - ret = -ENOMEM; - goto err1; - } + debugfs_create_u32(name, 0666, root, + &cd->vf_jobtimeout_msec[i]); } - file = debugfs_create_file("jobtimer", S_IRUGO, root, cd, - &jtimer_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("queue_working_time", S_IRUGO, root, cd, - &queue_working_time_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_u32("skip_recovery", 0666, root, - &cd->skip_recovery); - if (!file) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_u32("use_platform_recovery", 0666, root, - &cd->use_platform_recovery); - if (!file) { - ret = -ENOMEM; - goto err1; - } + debugfs_create_file("jobtimer", S_IRUGO, root, cd, &jtimer_fops); + debugfs_create_file("queue_working_time", S_IRUGO, root, cd, + &queue_working_time_fops); + debugfs_create_u32("skip_recovery", 0666, root, &cd->skip_recovery); + debugfs_create_u32("use_platform_recovery", 0666, root, + &cd->use_platform_recovery); cd->debugfs_root = root; - return 0; -err1: - debugfs_remove_recursive(root); -err0: - return ret; } void genqwe_exit_debugfs(struct genwqe_dev *cd) diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c index 3bc51f19c734..0e34c0568fed 100644 --- a/drivers/misc/genwqe/card_dev.c +++ b/drivers/misc/genwqe/card_dev.c @@ -1301,14 +1301,10 @@ int genwqe_device_create(struct genwqe_dev *cd) goto err_cdev; } - rc = genwqe_init_debugfs(cd); - if (rc != 0) - goto err_debugfs; + genwqe_init_debugfs(cd); return 0; - err_debugfs: - device_destroy(cd->class_genwqe, cd->devnum_genwqe); err_cdev: cdev_del(&cd->cdev_genwqe); err_add: diff --git a/drivers/misc/lkdtm/core.c b/drivers/misc/lkdtm/core.c index 756794ac8fd8..66ae6b2a6950 100644 --- a/drivers/misc/lkdtm/core.c +++ b/drivers/misc/lkdtm/core.c @@ -121,6 +121,9 @@ static const struct crashtype crashtypes[] = { CRASHTYPE(READ_AFTER_FREE), CRASHTYPE(WRITE_BUDDY_AFTER_FREE), CRASHTYPE(READ_BUDDY_AFTER_FREE), + CRASHTYPE(SLAB_FREE_DOUBLE), + CRASHTYPE(SLAB_FREE_CROSS), + CRASHTYPE(SLAB_FREE_PAGE), CRASHTYPE(SOFTLOCKUP), CRASHTYPE(HARDLOCKUP), CRASHTYPE(SPINLOCKUP), @@ -388,7 +391,7 @@ static int __init lkdtm_module_init(void) { struct crashpoint *crashpoint = NULL; const struct crashtype *crashtype = NULL; - int ret = -EINVAL; + int ret; int i; /* Neither or both of these need to be set */ @@ -427,25 +430,17 @@ static int __init lkdtm_module_init(void) lkdtm_bugs_init(&recur_count); lkdtm_perms_init(); lkdtm_usercopy_init(); + lkdtm_heap_init(); /* Register debugfs interface */ lkdtm_debugfs_root = debugfs_create_dir("provoke-crash", NULL); - if (!lkdtm_debugfs_root) { - pr_err("creating root dir failed\n"); - return -ENODEV; - } /* Install debugfs trigger files. */ for (i = 0; i < ARRAY_SIZE(crashpoints); i++) { struct crashpoint *cur = &crashpoints[i]; - struct dentry *de; - de = debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root, - cur, &cur->fops); - if (de == NULL) { - pr_err("could not create crashpoint %s\n", cur->name); - goto out_err; - } + debugfs_create_file(cur->name, 0644, lkdtm_debugfs_root, cur, + &cur->fops); } /* Install crashpoint if one was selected. */ @@ -473,6 +468,7 @@ static void __exit lkdtm_module_exit(void) debugfs_remove_recursive(lkdtm_debugfs_root); /* Handle test-specific clean-up. */ + lkdtm_heap_exit(); lkdtm_usercopy_exit(); if (lkdtm_kprobe != NULL) diff --git a/drivers/misc/lkdtm/heap.c b/drivers/misc/lkdtm/heap.c index 65026d7de130..3c5cec85edce 100644 --- a/drivers/misc/lkdtm/heap.c +++ b/drivers/misc/lkdtm/heap.c @@ -7,6 +7,10 @@ #include <linux/slab.h> #include <linux/sched.h> +static struct kmem_cache *double_free_cache; +static struct kmem_cache *a_cache; +static struct kmem_cache *b_cache; + /* * This tries to stay within the next largest power-of-2 kmalloc cache * to avoid actually overwriting anything important if it's not detected @@ -146,3 +150,71 @@ void lkdtm_READ_BUDDY_AFTER_FREE(void) kfree(val); } + +void lkdtm_SLAB_FREE_DOUBLE(void) +{ + int *val; + + val = kmem_cache_alloc(double_free_cache, GFP_KERNEL); + if (!val) { + pr_info("Unable to allocate double_free_cache memory.\n"); + return; + } + + /* Just make sure we got real memory. */ + *val = 0x12345678; + pr_info("Attempting double slab free ...\n"); + kmem_cache_free(double_free_cache, val); + kmem_cache_free(double_free_cache, val); +} + +void lkdtm_SLAB_FREE_CROSS(void) +{ + int *val; + + val = kmem_cache_alloc(a_cache, GFP_KERNEL); + if (!val) { + pr_info("Unable to allocate a_cache memory.\n"); + return; + } + + /* Just make sure we got real memory. */ + *val = 0x12345679; + pr_info("Attempting cross-cache slab free ...\n"); + kmem_cache_free(b_cache, val); +} + +void lkdtm_SLAB_FREE_PAGE(void) +{ + unsigned long p = __get_free_page(GFP_KERNEL); + + pr_info("Attempting non-Slab slab free ...\n"); + kmem_cache_free(NULL, (void *)p); + free_page(p); +} + +/* + * We have constructors to keep the caches distinctly separated without + * needing to boot with "slab_nomerge". + */ +static void ctor_double_free(void *region) +{ } +static void ctor_a(void *region) +{ } +static void ctor_b(void *region) +{ } + +void __init lkdtm_heap_init(void) +{ + double_free_cache = kmem_cache_create("lkdtm-heap-double_free", + 64, 0, 0, ctor_double_free); + a_cache = kmem_cache_create("lkdtm-heap-a", 64, 0, 0, ctor_a); + b_cache = kmem_cache_create("lkdtm-heap-b", 64, 0, 0, ctor_b); +} + +void __exit lkdtm_heap_exit(void) +{ + kmem_cache_destroy(double_free_cache); + kmem_cache_destroy(a_cache); + kmem_cache_destroy(b_cache); +} diff --git a/drivers/misc/lkdtm/lkdtm.h b/drivers/misc/lkdtm/lkdtm.h index bbcd370786d4..6a284a87a037 100644 --- a/drivers/misc/lkdtm/lkdtm.h +++ b/drivers/misc/lkdtm/lkdtm.h @@ -29,11 +29,16 @@ void lkdtm_STACK_GUARD_PAGE_TRAILING(void); void lkdtm_UNSET_SMEP(void); /* lkdtm_heap.c */ +void __init lkdtm_heap_init(void); +void __exit lkdtm_heap_exit(void); void lkdtm_OVERWRITE_ALLOCATION(void); void lkdtm_WRITE_AFTER_FREE(void); void lkdtm_READ_AFTER_FREE(void); void lkdtm_WRITE_BUDDY_AFTER_FREE(void); void lkdtm_READ_BUDDY_AFTER_FREE(void); +void lkdtm_SLAB_FREE_DOUBLE(void); +void lkdtm_SLAB_FREE_CROSS(void); +void lkdtm_SLAB_FREE_PAGE(void); /* lkdtm_perms.c */ void __init lkdtm_perms_init(void); diff --git a/drivers/misc/mei/debugfs.c b/drivers/misc/mei/debugfs.c index 47cfd5005e1b..a26c716c61a1 100644 --- a/drivers/misc/mei/debugfs.c +++ b/drivers/misc/mei/debugfs.c @@ -154,46 +154,21 @@ void mei_dbgfs_deregister(struct mei_device *dev) * * @dev: the mei device structure * @name: the mei device name - * - * Return: 0 on success, <0 on failure. */ -int mei_dbgfs_register(struct mei_device *dev, const char *name) +void mei_dbgfs_register(struct mei_device *dev, const char *name) { - struct dentry *dir, *f; + struct dentry *dir; dir = debugfs_create_dir(name, NULL); - if (!dir) - return -ENOMEM; - dev->dbgfs_dir = dir; - f = debugfs_create_file("meclients", S_IRUSR, dir, - dev, &mei_dbgfs_meclients_fops); - if (!f) { - dev_err(dev->dev, "meclients: registration failed\n"); - goto err; - } - f = debugfs_create_file("active", S_IRUSR, dir, - dev, &mei_dbgfs_active_fops); - if (!f) { - dev_err(dev->dev, "active: registration failed\n"); - goto err; - } - f = debugfs_create_file("devstate", S_IRUSR, dir, - dev, &mei_dbgfs_devstate_fops); - if (!f) { - dev_err(dev->dev, "devstate: registration failed\n"); - goto err; - } - f = debugfs_create_file("allow_fixed_address", S_IRUSR | S_IWUSR, dir, - &dev->allow_fixed_address, - &mei_dbgfs_allow_fa_fops); - if (!f) { - dev_err(dev->dev, "allow_fixed_address: registration failed\n"); - goto err; - } - return 0; -err: - mei_dbgfs_deregister(dev); - return -ENODEV; + debugfs_create_file("meclients", S_IRUSR, dir, dev, + &mei_dbgfs_meclients_fops); + debugfs_create_file("active", S_IRUSR, dir, dev, + &mei_dbgfs_active_fops); + debugfs_create_file("devstate", S_IRUSR, dir, dev, + &mei_dbgfs_devstate_fops); + debugfs_create_file("allow_fixed_address", S_IRUSR | S_IWUSR, dir, + &dev->allow_fixed_address, + &mei_dbgfs_allow_fa_fops); } diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index ad02097d7fee..f894d1f8a53e 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -984,16 +984,10 @@ int mei_register(struct mei_device *dev, struct device *parent) goto err_dev_create; } - ret = mei_dbgfs_register(dev, dev_name(clsdev)); - if (ret) { - dev_err(clsdev, "cannot register debugfs ret = %d\n", ret); - goto err_dev_dbgfs; - } + mei_dbgfs_register(dev, dev_name(clsdev)); return 0; -err_dev_dbgfs: - device_destroy(mei_class, devno); err_dev_create: cdev_del(&dev->cdev); err_dev_add: diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index fca832fcac57..f71a023aed3c 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -718,13 +718,10 @@ bool mei_hbuf_acquire(struct mei_device *dev); bool mei_write_is_idle(struct mei_device *dev); #if IS_ENABLED(CONFIG_DEBUG_FS) -int mei_dbgfs_register(struct mei_device *dev, const char *name); +void mei_dbgfs_register(struct mei_device *dev, const char *name); void mei_dbgfs_deregister(struct mei_device *dev); #else -static inline int mei_dbgfs_register(struct mei_device *dev, const char *name) -{ - return 0; -} +static inline void mei_dbgfs_register(struct mei_device *dev, const char *name) {} static inline void mei_dbgfs_deregister(struct mei_device *dev) {} #endif /* CONFIG_DEBUG_FS */ diff --git a/drivers/misc/mic/card/mic_debugfs.c b/drivers/misc/mic/card/mic_debugfs.c index bf7a60ccc66c..3ee3d2402634 100644 --- a/drivers/misc/mic/card/mic_debugfs.c +++ b/drivers/misc/mic/card/mic_debugfs.c @@ -51,25 +51,13 @@ DEFINE_SHOW_ATTRIBUTE(mic_intr); */ void __init mic_create_card_debug_dir(struct mic_driver *mdrv) { - struct dentry *d; - if (!mic_dbg) return; mdrv->dbg_dir = debugfs_create_dir(mdrv->name, mic_dbg); - if (!mdrv->dbg_dir) { - dev_err(mdrv->dev, "Cant create dbg_dir %s\n", mdrv->name); - return; - } - - d = debugfs_create_file("intr_test", 0444, mdrv->dbg_dir, - mdrv, &mic_intr_fops); - if (!d) { - dev_err(mdrv->dev, - "Cant create dbg intr_test %s\n", mdrv->name); - return; - } + debugfs_create_file("intr_test", 0444, mdrv->dbg_dir, mdrv, + &mic_intr_fops); } /** @@ -89,8 +77,6 @@ void mic_delete_card_debug_dir(struct mic_driver *mdrv) void __init mic_init_card_debugfs(void) { mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!mic_dbg) - pr_err("can't create debugfs dir\n"); } /** diff --git a/drivers/misc/mic/cosm/cosm_debugfs.c b/drivers/misc/mic/cosm/cosm_debugfs.c index 8e3f4589f16d..2fc9f4bf7001 100644 --- a/drivers/misc/mic/cosm/cosm_debugfs.c +++ b/drivers/misc/mic/cosm/cosm_debugfs.c @@ -93,8 +93,6 @@ void cosm_create_debug_dir(struct cosm_device *cdev) scnprintf(name, sizeof(name), "mic%d", cdev->index); cdev->dbg_dir = debugfs_create_dir(name, cosm_dbg); - if (!cdev->dbg_dir) - return; debugfs_create_file("log_buf", 0444, cdev->dbg_dir, cdev, &log_buf_fops); @@ -113,8 +111,6 @@ void cosm_delete_debug_dir(struct cosm_device *cdev) void cosm_init_debugfs(void) { cosm_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!cosm_dbg) - pr_err("can't create debugfs dir\n"); } void cosm_exit_debugfs(void) diff --git a/drivers/misc/mic/host/mic_debugfs.c b/drivers/misc/mic/host/mic_debugfs.c index 7ef8efe9552f..8a8e41677501 100644 --- a/drivers/misc/mic/host/mic_debugfs.c +++ b/drivers/misc/mic/host/mic_debugfs.c @@ -113,8 +113,6 @@ void mic_create_debug_dir(struct mic_device *mdev) scnprintf(name, sizeof(name), "mic%d", mdev->id); mdev->dbg_dir = debugfs_create_dir(name, mic_dbg); - if (!mdev->dbg_dir) - return; debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev, &mic_smpt_fops); @@ -143,8 +141,6 @@ void mic_delete_debug_dir(struct mic_device *mdev) void __init mic_init_debugfs(void) { mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!mic_dbg) - pr_err("can't create debugfs dir\n"); } /** diff --git a/drivers/misc/mic/scif/scif_debugfs.c b/drivers/misc/mic/scif/scif_debugfs.c index a6820480105a..8fe38e7ca6e6 100644 --- a/drivers/misc/mic/scif/scif_debugfs.c +++ b/drivers/misc/mic/scif/scif_debugfs.c @@ -103,11 +103,6 @@ DEFINE_SHOW_ATTRIBUTE(scif_rma); void __init scif_init_debugfs(void) { scif_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); - if (!scif_dbg) { - dev_err(scif_info.mdev.this_device, - "can't create debugfs dir scif\n"); - return; - } debugfs_create_file("scif_dev", 0444, scif_dbg, NULL, &scif_dev_fops); debugfs_create_file("scif_rma", 0444, scif_dbg, NULL, &scif_rma_fops); diff --git a/drivers/misc/mic/vop/vop_debugfs.c b/drivers/misc/mic/vop/vop_debugfs.c index ed59cd75e182..9d4f175f4dd1 100644 --- a/drivers/misc/mic/vop/vop_debugfs.c +++ b/drivers/misc/mic/vop/vop_debugfs.c @@ -174,10 +174,6 @@ void vop_init_debugfs(struct vop_info *vi) snprintf(name, sizeof(name), "%s%d", KBUILD_MODNAME, vi->vpdev->dnode); vi->dbg = debugfs_create_dir(name, NULL); - if (!vi->dbg) { - pr_err("can't create debugfs dir vop\n"); - return; - } debugfs_create_file("dp", 0444, vi->dbg, vi, &vop_dp_fops); debugfs_create_file("vdev_info", 0444, vi->dbg, vi, &vop_vdev_info_fops); } diff --git a/drivers/misc/ocxl/config.c b/drivers/misc/ocxl/config.c index 5e65acb8e134..c8e19bfb5ef9 100644 --- a/drivers/misc/ocxl/config.c +++ b/drivers/misc/ocxl/config.c @@ -20,11 +20,14 @@ #define OCXL_DVSEC_TEMPL_MMIO_GLOBAL_SZ 0x28 #define OCXL_DVSEC_TEMPL_MMIO_PP 0x30 #define OCXL_DVSEC_TEMPL_MMIO_PP_SZ 0x38 -#define OCXL_DVSEC_TEMPL_MEM_SZ 0x3C -#define OCXL_DVSEC_TEMPL_WWID 0x40 +#define OCXL_DVSEC_TEMPL_ALL_MEM_SZ 0x3C +#define OCXL_DVSEC_TEMPL_LPC_MEM_START 0x40 +#define OCXL_DVSEC_TEMPL_WWID 0x48 +#define OCXL_DVSEC_TEMPL_LPC_MEM_SZ 0x58 #define OCXL_MAX_AFU_PER_FUNCTION 64 -#define OCXL_TEMPL_LEN 0x58 +#define OCXL_TEMPL_LEN_1_0 0x58 +#define OCXL_TEMPL_LEN_1_1 0x60 #define OCXL_TEMPL_NAME_LEN 24 #define OCXL_CFG_TIMEOUT 3 @@ -269,34 +272,72 @@ static int read_afu_info(struct pci_dev *dev, struct ocxl_fn_config *fn, return 0; } +/** + * Read the template version from the AFU + * dev: the device for the AFU + * fn: the AFU offsets + * len: outputs the template length + * version: outputs the major<<8,minor version + * + * Returns 0 on success, negative on failure + */ +static int read_template_version(struct pci_dev *dev, struct ocxl_fn_config *fn, + u16 *len, u16 *version) +{ + u32 val32; + u8 major, minor; + int rc; + + rc = read_afu_info(dev, fn, OCXL_DVSEC_TEMPL_VERSION, &val32); + if (rc) + return rc; + + *len = EXTRACT_BITS(val32, 16, 31); + major = EXTRACT_BITS(val32, 8, 15); + minor = EXTRACT_BITS(val32, 0, 7); + *version = (major << 8) + minor; + return 0; +} + int ocxl_config_check_afu_index(struct pci_dev *dev, struct ocxl_fn_config *fn, int afu_idx) { - u32 val; - int rc, templ_major, templ_minor, len; + int rc; + u16 templ_version; + u16 len, expected_len; pci_write_config_byte(dev, fn->dvsec_afu_info_pos + OCXL_DVSEC_AFU_INFO_AFU_IDX, afu_idx); - rc = read_afu_info(dev, fn, OCXL_DVSEC_TEMPL_VERSION, &val); + + rc = read_template_version(dev, fn, &len, &templ_version); if (rc) return rc; - /* AFU index map can have holes */ - if (!val) + /* AFU index map can have holes, in which case we read all 0's */ + if (!templ_version && !len) return 0; - templ_major = EXTRACT_BITS(val, 8, 15); - templ_minor = EXTRACT_BITS(val, 0, 7); dev_dbg(&dev->dev, "AFU descriptor template version %d.%d\n", - templ_major, templ_minor); - - len = EXTRACT_BITS(val, 16, 31); - if (len != OCXL_TEMPL_LEN) { - dev_warn(&dev->dev, - "Unexpected template length in AFU information (%#x)\n", - len); + templ_version >> 8, templ_version & 0xFF); + + switch (templ_version) { + case 0x0005: // v0.5 was used prior to the spec approval + case 0x0100: + expected_len = OCXL_TEMPL_LEN_1_0; + break; + case 0x0101: + expected_len = OCXL_TEMPL_LEN_1_1; + break; + default: + dev_warn(&dev->dev, "Unknown AFU template version %#x\n", + templ_version); + expected_len = len; } + if (len != expected_len) + dev_warn(&dev->dev, + "Unexpected template length %#x in AFU information, expected %#x for version %#x\n", + len, expected_len, templ_version); return 1; } @@ -434,6 +475,102 @@ static int validate_afu(struct pci_dev *dev, struct ocxl_afu_config *afu) return 0; } +/** + * Populate AFU metadata regarding LPC memory + * dev: the device for the AFU + * fn: the AFU offsets + * afu: the AFU struct to populate the LPC metadata into + * + * Returns 0 on success, negative on failure + */ +static int read_afu_lpc_memory_info(struct pci_dev *dev, + struct ocxl_fn_config *fn, + struct ocxl_afu_config *afu) +{ + int rc; + u32 val32; + u16 templ_version; + u16 templ_len; + u64 total_mem_size = 0; + u64 lpc_mem_size = 0; + + afu->lpc_mem_offset = 0; + afu->lpc_mem_size = 0; + afu->special_purpose_mem_offset = 0; + afu->special_purpose_mem_size = 0; + /* + * For AFUs following template v1.0, the LPC memory covers the + * total memory. Its size is a power of 2. + * + * For AFUs with template >= v1.01, the total memory size is + * still a power of 2, but it is split in 2 parts: + * - the LPC memory, whose size can now be anything + * - the remainder memory is a special purpose memory, whose + * definition is AFU-dependent. It is not accessible through + * the usual commands for LPC memory + */ + rc = read_afu_info(dev, fn, OCXL_DVSEC_TEMPL_ALL_MEM_SZ, &val32); + if (rc) + return rc; + + val32 = EXTRACT_BITS(val32, 0, 7); + if (!val32) + return 0; /* No LPC memory */ + + /* + * The configuration space spec allows for a memory size of up + * to 2^255 bytes. + * + * Current generation hardware uses 56-bit physical addresses, + * but we won't be able to get near close to that, as we won't + * have a hole big enough in the memory map. Let it pass in + * the driver for now. We'll get an error from the firmware + * when trying to configure something too big. + */ + total_mem_size = 1ull << val32; + + rc = read_afu_info(dev, fn, OCXL_DVSEC_TEMPL_LPC_MEM_START, &val32); + if (rc) + return rc; + + afu->lpc_mem_offset = val32; + + rc = read_afu_info(dev, fn, OCXL_DVSEC_TEMPL_LPC_MEM_START + 4, &val32); + if (rc) + return rc; + + afu->lpc_mem_offset |= (u64) val32 << 32; + + rc = read_template_version(dev, fn, &templ_len, &templ_version); + if (rc) + return rc; + + if (templ_version >= 0x0101) { + rc = read_afu_info(dev, fn, + OCXL_DVSEC_TEMPL_LPC_MEM_SZ, &val32); + if (rc) + return rc; + lpc_mem_size = val32; + + rc = read_afu_info(dev, fn, + OCXL_DVSEC_TEMPL_LPC_MEM_SZ + 4, &val32); + if (rc) + return rc; + lpc_mem_size |= (u64) val32 << 32; + } else { + lpc_mem_size = total_mem_size; + } + afu->lpc_mem_size = lpc_mem_size; + + if (lpc_mem_size < total_mem_size) { + afu->special_purpose_mem_offset = + afu->lpc_mem_offset + lpc_mem_size; + afu->special_purpose_mem_size = + total_mem_size - lpc_mem_size; + } + return 0; +} + int ocxl_config_read_afu(struct pci_dev *dev, struct ocxl_fn_config *fn, struct ocxl_afu_config *afu, u8 afu_idx) { @@ -467,10 +604,9 @@ int ocxl_config_read_afu(struct pci_dev *dev, struct ocxl_fn_config *fn, if (rc) return rc; - rc = read_afu_info(dev, fn, OCXL_DVSEC_TEMPL_MEM_SZ, &val32); + rc = read_afu_lpc_memory_info(dev, fn, afu); if (rc) return rc; - afu->log_mem_size = EXTRACT_BITS(val32, 0, 7); rc = read_afu_control(dev, afu); if (rc) @@ -487,7 +623,12 @@ int ocxl_config_read_afu(struct pci_dev *dev, struct ocxl_fn_config *fn, dev_dbg(&dev->dev, " pp mmio bar = %hhu\n", afu->pp_mmio_bar); dev_dbg(&dev->dev, " pp mmio offset = %#llx\n", afu->pp_mmio_offset); dev_dbg(&dev->dev, " pp mmio stride = %#x\n", afu->pp_mmio_stride); - dev_dbg(&dev->dev, " mem size (log) = %hhu\n", afu->log_mem_size); + dev_dbg(&dev->dev, " lpc_mem offset = %#llx\n", afu->lpc_mem_offset); + dev_dbg(&dev->dev, " lpc_mem size = %#llx\n", afu->lpc_mem_size); + dev_dbg(&dev->dev, " special purpose mem offset = %#llx\n", + afu->special_purpose_mem_offset); + dev_dbg(&dev->dev, " special purpose mem size = %#llx\n", + afu->special_purpose_mem_size); dev_dbg(&dev->dev, " pasid supported (log) = %u\n", afu->pasid_supported_log); dev_dbg(&dev->dev, " actag supported = %u\n", diff --git a/drivers/misc/ocxl/pci.c b/drivers/misc/ocxl/pci.c index f2a3ef4b9bdd..cb920aa88d3a 100644 --- a/drivers/misc/ocxl/pci.c +++ b/drivers/misc/ocxl/pci.c @@ -41,7 +41,7 @@ static int ocxl_probe(struct pci_dev *dev, const struct pci_device_id *id) return 0; } -void ocxl_remove(struct pci_dev *dev) +static void ocxl_remove(struct pci_dev *dev) { struct ocxl_fn *fn; struct ocxl_afu *afu; diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c index 18ca938b86e6..a36ed1ff5967 100644 --- a/drivers/misc/ti-st/st_kim.c +++ b/drivers/misc/ti-st/st_kim.c @@ -748,10 +748,6 @@ static int kim_probe(struct platform_device *pdev) pr_info("sysfs entries created\n"); kim_debugfs_dir = debugfs_create_dir("ti-st", NULL); - if (!kim_debugfs_dir) { - pr_err(" debugfs entries creation failed "); - return 0; - } debugfs_create_file("version", S_IRUGO, kim_debugfs_dir, kim_gdata, &version_fops); diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c index 043eed845246..97b58e7ad901 100644 --- a/drivers/misc/vmw_balloon.c +++ b/drivers/misc/vmw_balloon.c @@ -1699,19 +1699,10 @@ static int vmballoon_debug_show(struct seq_file *f, void *offset) DEFINE_SHOW_ATTRIBUTE(vmballoon_debug); -static int __init vmballoon_debugfs_init(struct vmballoon *b) +static void __init vmballoon_debugfs_init(struct vmballoon *b) { - int error; - b->dbg_entry = debugfs_create_file("vmmemctl", S_IRUGO, NULL, b, &vmballoon_debug_fops); - if (IS_ERR(b->dbg_entry)) { - error = PTR_ERR(b->dbg_entry); - pr_err("failed to create debugfs entry, error: %d\n", error); - return error; - } - - return 0; } static void __exit vmballoon_debugfs_exit(struct vmballoon *b) @@ -1724,9 +1715,8 @@ static void __exit vmballoon_debugfs_exit(struct vmballoon *b) #else -static inline int vmballoon_debugfs_init(struct vmballoon *b) +static inline void vmballoon_debugfs_init(struct vmballoon *b) { - return 0; } static inline void vmballoon_debugfs_exit(struct vmballoon *b) @@ -1948,10 +1938,6 @@ static int __init vmballoon_init(void) if (error) goto fail; - error = vmballoon_debugfs_init(&balloon); - if (error) - goto fail; - /* * Initialization of compaction must be done after the call to * balloon_devinfo_init() . @@ -1971,6 +1957,8 @@ static int __init vmballoon_init(void) queue_delayed_work(system_freezable_wq, &balloon.dwork, 0); + vmballoon_debugfs_init(&balloon); + return 0; fail: vmballoon_unregister_shrinker(&balloon); |