diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/blkdev.h | 19 | ||||
| -rw-r--r-- | include/linux/cdev.h | 5 | ||||
| -rw-r--r-- | include/linux/dax.h | 34 | ||||
| -rw-r--r-- | include/linux/device-mapper.h | 8 | ||||
| -rw-r--r-- | include/linux/fpga/fpga-mgr.h | 1 | ||||
| -rw-r--r-- | include/linux/hyperv.h | 31 | ||||
| -rw-r--r-- | include/linux/iomap.h | 1 | ||||
| -rw-r--r-- | include/linux/pmem.h | 23 | ||||
| -rw-r--r-- | include/linux/string.h | 8 | ||||
| -rw-r--r-- | include/linux/vme.h | 12 |
10 files changed, 81 insertions, 61 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 5a7da607ca04..848f87eb1905 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1916,28 +1916,12 @@ static inline bool integrity_req_gap_front_merge(struct request *req, #endif /* CONFIG_BLK_DEV_INTEGRITY */ -/** - * struct blk_dax_ctl - control and output parameters for ->direct_access - * @sector: (input) offset relative to a block_device - * @addr: (output) kernel virtual address for @sector populated by driver - * @pfn: (output) page frame number for @addr populated by driver - * @size: (input) number of bytes requested - */ -struct blk_dax_ctl { - sector_t sector; - void *addr; - long size; - pfn_t pfn; -}; - struct block_device_operations { int (*open) (struct block_device *, fmode_t); void (*release) (struct gendisk *, fmode_t); int (*rw_page)(struct block_device *, sector_t, struct page *, bool); int (*ioctl) (struct block_device *, fmode_t, unsigned, unsigned long); int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long); - long (*direct_access)(struct block_device *, sector_t, void **, pfn_t *, - long); unsigned int (*check_events) (struct gendisk *disk, unsigned int clearing); /* ->media_changed() is DEPRECATED, use ->check_events() instead */ @@ -1956,9 +1940,8 @@ extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int, extern int bdev_read_page(struct block_device *, sector_t, struct page *); extern int bdev_write_page(struct block_device *, sector_t, struct page *, struct writeback_control *); -extern long bdev_direct_access(struct block_device *, struct blk_dax_ctl *); extern int bdev_dax_supported(struct super_block *, int); -extern bool bdev_dax_capable(struct block_device *); +int bdev_dax_pgoff(struct block_device *, sector_t, size_t, pgoff_t *pgoff); #else /* CONFIG_BLOCK */ struct block_device; diff --git a/include/linux/cdev.h b/include/linux/cdev.h index f8763615a5f2..408bc09ce497 100644 --- a/include/linux/cdev.h +++ b/include/linux/cdev.h @@ -4,6 +4,7 @@ #include <linux/kobject.h> #include <linux/kdev_t.h> #include <linux/list.h> +#include <linux/device.h> struct file_operations; struct inode; @@ -26,6 +27,10 @@ void cdev_put(struct cdev *p); int cdev_add(struct cdev *, dev_t, unsigned); +void cdev_set_parent(struct cdev *p, struct kobject *kobj); +int cdev_device_add(struct cdev *cdev, struct device *dev); +void cdev_device_del(struct cdev *cdev, struct device *dev); + void cdev_del(struct cdev *); void cd_forget(struct inode *); diff --git a/include/linux/dax.h b/include/linux/dax.h index d8a3dc042e1c..d3158e74a59e 100644 --- a/include/linux/dax.h +++ b/include/linux/dax.h @@ -7,6 +7,28 @@ #include <asm/pgtable.h> struct iomap_ops; +struct dax_device; +struct dax_operations { + /* + * direct_access: translate a device-relative + * logical-page-offset into an absolute physical pfn. Return the + * number of pages available for DAX at that pfn. + */ + long (*direct_access)(struct dax_device *, pgoff_t, long, + void **, pfn_t *); +}; + +int dax_read_lock(void); +void dax_read_unlock(int id); +struct dax_device *dax_get_by_host(const char *host); +struct dax_device *alloc_dax(void *private, const char *host, + const struct dax_operations *ops); +void put_dax(struct dax_device *dax_dev); +bool dax_alive(struct dax_device *dax_dev); +void kill_dax(struct dax_device *dax_dev); +void *dax_get_private(struct dax_device *dax_dev); +long dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff, long nr_pages, + void **kaddr, pfn_t *pfn); /* * We use lowest available bit in exceptional entry for locking, one bit for @@ -48,17 +70,13 @@ void dax_wake_mapping_entry_waiter(struct address_space *mapping, pgoff_t index, void *entry, bool wake_all); #ifdef CONFIG_FS_DAX -struct page *read_dax_sector(struct block_device *bdev, sector_t n); -int __dax_zero_page_range(struct block_device *bdev, sector_t sector, +int __dax_zero_page_range(struct block_device *bdev, + struct dax_device *dax_dev, sector_t sector, unsigned int offset, unsigned int length); #else -static inline struct page *read_dax_sector(struct block_device *bdev, - sector_t n) -{ - return ERR_PTR(-ENXIO); -} static inline int __dax_zero_page_range(struct block_device *bdev, - sector_t sector, unsigned int offset, unsigned int length) + struct dax_device *dax_dev, sector_t sector, + unsigned int offset, unsigned int length) { return -ENXIO; } diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index a7e6903866fd..df830d167892 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -128,13 +128,15 @@ typedef int (*dm_busy_fn) (struct dm_target *ti); * < 0 : error * >= 0 : the number of bytes accessible at the address */ -typedef long (*dm_direct_access_fn) (struct dm_target *ti, sector_t sector, - void **kaddr, pfn_t *pfn, long size); +typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff, + long nr_pages, void **kaddr, pfn_t *pfn); +#define PAGE_SECTORS (PAGE_SIZE / 512) void dm_error(const char *message); struct dm_dev { struct block_device *bdev; + struct dax_device *dax_dev; fmode_t mode; char name[16]; }; @@ -176,7 +178,7 @@ struct target_type { dm_busy_fn busy; dm_iterate_devices_fn iterate_devices; dm_io_hints_fn io_hints; - dm_direct_access_fn direct_access; + dm_dax_direct_access_fn direct_access; /* For internal device-mapper use. */ struct list_head list; diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h index 57beb5d09bfc..e2ef94fd37af 100644 --- a/include/linux/fpga/fpga-mgr.h +++ b/include/linux/fpga/fpga-mgr.h @@ -70,6 +70,7 @@ enum fpga_mgr_states { */ #define FPGA_MGR_PARTIAL_RECONFIG BIT(0) #define FPGA_MGR_EXTERNAL_CONFIG BIT(1) +#define FPGA_MGR_ENCRYPTED_BITSTREAM BIT(2) /** * struct fpga_image_info - information specific to a FPGA image diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 970771a5f739..f681f7bc9b43 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -491,6 +491,12 @@ struct vmbus_channel_rescind_offer { u32 child_relid; } __packed; +static inline u32 +hv_ringbuffer_pending_size(const struct hv_ring_buffer_info *rbi) +{ + return rbi->ring_buffer->pending_send_sz; +} + /* * Request Offer -- no parameters, SynIC message contains the partition ID * Set Snoop -- no parameters, SynIC message contains the partition ID @@ -524,10 +530,10 @@ struct vmbus_channel_open_channel { u32 target_vp; /* - * The upstream ring buffer begins at offset zero in the memory - * described by RingBufferGpadlHandle. The downstream ring buffer - * follows it at this offset (in pages). - */ + * The upstream ring buffer begins at offset zero in the memory + * described by RingBufferGpadlHandle. The downstream ring buffer + * follows it at this offset (in pages). + */ u32 downstream_ringbuffer_pageoffset; /* User-specific data to be passed along to the server endpoint. */ @@ -1013,7 +1019,7 @@ extern int vmbus_open(struct vmbus_channel *channel, u32 recv_ringbuffersize, void *userdata, u32 userdatalen, - void(*onchannel_callback)(void *context), + void (*onchannel_callback)(void *context), void *context); extern void vmbus_close(struct vmbus_channel *channel); @@ -1155,6 +1161,17 @@ static inline void *hv_get_drvdata(struct hv_device *dev) return dev_get_drvdata(&dev->device); } +struct hv_ring_buffer_debug_info { + u32 current_interrupt_mask; + u32 current_read_index; + u32 current_write_index; + u32 bytes_avail_toread; + u32 bytes_avail_towrite; +}; + +void hv_ringbuffer_get_debuginfo(const struct hv_ring_buffer_info *ring_info, + struct hv_ring_buffer_debug_info *debug_info); + /* Vmbus interface */ #define vmbus_driver_register(driver) \ __vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) @@ -1428,7 +1445,7 @@ struct hyperv_service_callback { char *log_msg; uuid_le data; struct vmbus_channel *channel; - void (*callback) (void *context); + void (*callback)(void *context); }; #define MAX_SRV_VER 0x7ffffff @@ -1504,8 +1521,6 @@ static inline void hv_signal_on_read(struct vmbus_channel *channel) cached_write_sz = hv_get_cached_bytes_to_write(rbi); if (cached_write_sz < pending_sz) vmbus_setevent(channel); - - return; } static inline void diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 7291810067eb..f753e788da31 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -41,6 +41,7 @@ struct iomap { u16 type; /* type of mapping */ u16 flags; /* flags for mapping */ struct block_device *bdev; /* block device for I/O */ + struct dax_device *dax_dev; /* dax_dev for dax operations */ }; /* diff --git a/include/linux/pmem.h b/include/linux/pmem.h index e856c2cb0fe8..71ecf3d46aac 100644 --- a/include/linux/pmem.h +++ b/include/linux/pmem.h @@ -31,12 +31,6 @@ static inline void arch_memcpy_to_pmem(void *dst, const void *src, size_t n) BUG(); } -static inline int arch_memcpy_from_pmem(void *dst, const void *src, size_t n) -{ - BUG(); - return -EFAULT; -} - static inline size_t arch_copy_from_iter_pmem(void *addr, size_t bytes, struct iov_iter *i) { @@ -65,23 +59,6 @@ static inline bool arch_has_pmem_api(void) return IS_ENABLED(CONFIG_ARCH_HAS_PMEM_API); } -/* - * memcpy_from_pmem - read from persistent memory with error handling - * @dst: destination buffer - * @src: source buffer - * @size: transfer length - * - * Returns 0 on success negative error code on failure. - */ -static inline int memcpy_from_pmem(void *dst, void const *src, size_t size) -{ - if (arch_has_pmem_api()) - return arch_memcpy_from_pmem(dst, src, size); - else - memcpy(dst, src, size); - return 0; -} - /** * memcpy_to_pmem - copy data to persistent memory * @dst: destination buffer for the copy diff --git a/include/linux/string.h b/include/linux/string.h index 26b6f6a66f83..9d6f189157e2 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -114,6 +114,14 @@ extern int memcmp(const void *,const void *,__kernel_size_t); #ifndef __HAVE_ARCH_MEMCHR extern void * memchr(const void *,int,__kernel_size_t); #endif +#ifndef __HAVE_ARCH_MEMCPY_MCSAFE +static inline __must_check int memcpy_mcsafe(void *dst, const void *src, + size_t cnt) +{ + memcpy(dst, src, cnt); + return 0; +} +#endif void *memchr_inv(const void *s, int c, size_t n); char *strreplace(char *s, char old, char new); diff --git a/include/linux/vme.h b/include/linux/vme.h index ec5e8bf6118e..25874da3f2e1 100644 --- a/include/linux/vme.h +++ b/include/linux/vme.h @@ -92,7 +92,7 @@ extern struct bus_type vme_bus_type; #define VME_SLOT_ALL -2 /** - * Structure representing a VME device + * struct vme_dev - Structure representing a VME device * @num: The device number * @bridge: Pointer to the bridge device this device is on * @dev: Internal device structure @@ -107,6 +107,16 @@ struct vme_dev { struct list_head bridge_list; }; +/** + * struct vme_driver - Structure representing a VME driver + * @name: Driver name, should be unique among VME drivers and usually the same + * as the module name. + * @match: Callback used to determine whether probe should be run. + * @probe: Callback for device binding, called when new device is detected. + * @remove: Callback, called on device removal. + * @driver: Underlying generic device driver structure. + * @devices: List of VME devices (struct vme_dev) associated with this driver. + */ struct vme_driver { const char *name; int (*match)(struct vme_dev *); |