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-rw-r--r--include/linux/blkdev.h19
-rw-r--r--include/linux/cdev.h5
-rw-r--r--include/linux/dax.h34
-rw-r--r--include/linux/device-mapper.h8
-rw-r--r--include/linux/fpga/fpga-mgr.h1
-rw-r--r--include/linux/hyperv.h31
-rw-r--r--include/linux/iomap.h1
-rw-r--r--include/linux/pmem.h23
-rw-r--r--include/linux/string.h8
-rw-r--r--include/linux/vme.h12
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 *);