int (*release) (struct gendisk *, fmode_t);
int (*ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
- int (*direct_access) (struct block_device *, sector_t, void __pmem **,
+ int (*direct_access) (struct block_device *, sector_t, void **,
unsigned long *);
int (*media_changed) (struct gendisk *);
void (*unlock_native_capacity) (struct gendisk *);
*/
static long
axon_ram_direct_access(struct block_device *device, sector_t sector,
- void __pmem **kaddr, pfn_t *pfn, long size)
+ void **kaddr, pfn_t *pfn, long size)
{
struct axon_ram_bank *bank = device->bd_disk->private_data;
loff_t offset = (loff_t)sector << AXON_RAM_SECTOR_SHIFT;
- *kaddr = (void __pmem __force *) bank->io_addr + offset;
+ *kaddr = (void *) bank->io_addr + offset;
*pfn = phys_to_pfn_t(bank->ph_addr + offset, PFN_DEV);
return bank->size - offset;
}
* Copy data to persistent memory media via non-temporal stores so that
* a subsequent pmem driver flush operation will drain posted write queues.
*/
-static inline void arch_memcpy_to_pmem(void __pmem *dst, const void *src,
- size_t n)
+static inline void arch_memcpy_to_pmem(void *dst, const void *src, size_t n)
{
- int unwritten;
+ int rem;
/*
* We are copying between two kernel buffers, if
* fault) we would have already reported a general protection fault
* before the WARN+BUG.
*/
- unwritten = __copy_from_user_inatomic_nocache((void __force *) dst,
- (void __user *) src, n);
- if (WARN(unwritten, "%s: fault copying %p <- %p unwritten: %d\n",
- __func__, dst, src, unwritten))
+ rem = __copy_from_user_inatomic_nocache(dst, (void __user *) src, n);
+ if (WARN(rem, "%s: fault copying %p <- %p unwritten: %d\n",
+ __func__, dst, src, rem))
BUG();
}
-static inline int arch_memcpy_from_pmem(void *dst, const void __pmem *src,
- size_t n)
+static inline int arch_memcpy_from_pmem(void *dst, const void *src, size_t n)
{
if (static_cpu_has(X86_FEATURE_MCE_RECOVERY))
- return memcpy_mcsafe(dst, (void __force *) src, n);
- memcpy(dst, (void __force *) src, n);
+ return memcpy_mcsafe(dst, src, n);
+ memcpy(dst, src, n);
return 0;
}
* Write back a cache range using the CLWB (cache line write back)
* instruction.
*/
-static inline void arch_wb_cache_pmem(void __pmem *addr, size_t size)
+static inline void arch_wb_cache_pmem(void *addr, size_t size)
{
u16 x86_clflush_size = boot_cpu_data.x86_clflush_size;
unsigned long clflush_mask = x86_clflush_size - 1;
- void *vaddr = (void __force *)addr;
- void *vend = vaddr + size;
+ void *vend = addr + size;
void *p;
- for (p = (void *)((unsigned long)vaddr & ~clflush_mask);
+ for (p = (void *)((unsigned long)addr & ~clflush_mask);
p < vend; p += x86_clflush_size)
clwb(p);
}
*
* Copy data from the iterator 'i' to the PMEM buffer starting at 'addr'.
*/
-static inline size_t arch_copy_from_iter_pmem(void __pmem *addr, size_t bytes,
+static inline size_t arch_copy_from_iter_pmem(void *addr, size_t bytes,
struct iov_iter *i)
{
- void *vaddr = (void __force *)addr;
size_t len;
/* TODO: skip the write-back by always using non-temporal stores */
- len = copy_from_iter_nocache(vaddr, bytes, i);
+ len = copy_from_iter_nocache(addr, bytes, i);
if (__iter_needs_pmem_wb(i))
arch_wb_cache_pmem(addr, bytes);
*
* Write zeros into the memory range starting at 'addr' for 'size' bytes.
*/
-static inline void arch_clear_pmem(void __pmem *addr, size_t size)
+static inline void arch_clear_pmem(void *addr, size_t size)
{
- void *vaddr = (void __force *)addr;
-
- memset(vaddr, 0, size);
+ memset(addr, 0, size);
arch_wb_cache_pmem(addr, size);
}
-static inline void arch_invalidate_pmem(void __pmem *addr, size_t size)
+static inline void arch_invalidate_pmem(void *addr, size_t size)
{
- clflush_cache_range((void __force *) addr, size);
+ clflush_cache_range(addr, size);
}
#endif /* CONFIG_ARCH_HAS_PMEM_API */
#endif /* __ASM_X86_PMEM_H__ */
struct nd_blk_addr {
union {
void __iomem *base;
- void __pmem *aperture;
+ void *aperture;
};
};
#ifdef CONFIG_BLK_DEV_RAM_DAX
static long brd_direct_access(struct block_device *bdev, sector_t sector,
- void __pmem **kaddr, pfn_t *pfn, long size)
+ void **kaddr, pfn_t *pfn, long size)
{
struct brd_device *brd = bdev->bd_disk->private_data;
struct page *page;
page = brd_insert_page(brd, sector);
if (!page)
return -ENOSPC;
- *kaddr = (void __pmem *)page_address(page);
+ *kaddr = page_address(page);
*pfn = page_to_pfn_t(page);
return PAGE_SIZE;
bool bad_pmem = false;
void *mem = kmap_atomic(page);
phys_addr_t pmem_off = sector * 512 + pmem->data_offset;
- void __pmem *pmem_addr = pmem->virt_addr + pmem_off;
+ void *pmem_addr = pmem->virt_addr + pmem_off;
if (unlikely(is_bad_pmem(&pmem->bb, sector, len)))
bad_pmem = true;
/* see "strong" declaration in tools/testing/nvdimm/pmem-dax.c */
__weak long pmem_direct_access(struct block_device *bdev, sector_t sector,
- void __pmem **kaddr, pfn_t *pfn, long size)
+ void **kaddr, pfn_t *pfn, long size)
{
struct pmem_device *pmem = bdev->bd_queue->queuedata;
resource_size_t offset = sector * 512 + pmem->data_offset;
if (IS_ERR(addr))
return PTR_ERR(addr);
- pmem->virt_addr = (void __pmem *) addr;
+ pmem->virt_addr = addr;
blk_queue_write_cache(q, true, true);
blk_queue_make_request(q, pmem_make_request);
#include <linux/fs.h>
long pmem_direct_access(struct block_device *bdev, sector_t sector,
- void __pmem **kaddr, pfn_t *pfn, long size);
+ void **kaddr, pfn_t *pfn, long size);
/* this definition is in it's own header for tools/testing/nvdimm to consume */
struct pmem_device {
/* One contiguous memory region per device */
/* when non-zero this device is hosting a 'pfn' instance */
phys_addr_t data_offset;
u64 pfn_flags;
- void __pmem *virt_addr;
+ void *virt_addr;
/* immutable base size of the namespace */
size_t size;
/* trim size when namespace capacity has been section aligned */
static blk_qc_t dcssblk_make_request(struct request_queue *q,
struct bio *bio);
static long dcssblk_direct_access(struct block_device *bdev, sector_t secnum,
- void __pmem **kaddr, pfn_t *pfn, long size);
+ void **kaddr, pfn_t *pfn, long size);
static char dcssblk_segments[DCSSBLK_PARM_LEN] = "\0";
static long
dcssblk_direct_access (struct block_device *bdev, sector_t secnum,
- void __pmem **kaddr, pfn_t *pfn, long size)
+ void **kaddr, pfn_t *pfn, long size)
{
struct dcssblk_dev_info *dev_info;
unsigned long offset, dev_sz;
return -ENODEV;
dev_sz = dev_info->end - dev_info->start;
offset = secnum * 512;
- *kaddr = (void __pmem *) (dev_info->start + offset);
+ *kaddr = (void *) dev_info->start + offset;
*pfn = __pfn_to_pfn_t(PFN_DOWN(dev_info->start + offset), PFN_DEV);
return dev_sz - offset;
struct request_queue *q = bdev->bd_queue;
long rc = -EIO;
- dax->addr = (void __pmem *) ERR_PTR(-EIO);
+ dax->addr = ERR_PTR(-EIO);
if (blk_queue_enter(q, true) != 0)
return rc;
rc = bdev_direct_access(bdev, dax);
if (rc < 0) {
- dax->addr = (void __pmem *) ERR_PTR(rc);
+ dax->addr = ERR_PTR(rc);
blk_queue_exit(q);
return rc;
}
int rw = iov_iter_rw(iter), rc;
long map_len = 0;
struct blk_dax_ctl dax = {
- .addr = (void __pmem *) ERR_PTR(-EIO),
+ .addr = ERR_PTR(-EIO),
};
unsigned blkbits = inode->i_blkbits;
sector_t file_blks = (i_size_read(inode) + (1 << blkbits) - 1)
*/
struct blk_dax_ctl {
sector_t sector;
- void __pmem *addr;
+ void *addr;
long size;
pfn_t pfn;
};
int (*rw_page)(struct block_device *, sector_t, struct page *, int rw);
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 __pmem **,
- pfn_t *, 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 */
# define __release(x) __context__(x,-1)
# define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0)
# define __percpu __attribute__((noderef, address_space(3)))
-# define __pmem __attribute__((noderef, address_space(5)))
#ifdef CONFIG_SPARSE_RCU_POINTER
# define __rcu __attribute__((noderef, address_space(4)))
#else /* CONFIG_SPARSE_RCU_POINTER */
# define __cond_lock(x,c) (c)
# define __percpu
# define __rcu
-# define __pmem
# define __private
# define ACCESS_PRIVATE(p, member) ((p)->member)
#endif /* __CHECKER__ */
struct nd_namespace_common common;
struct resource res;
resource_size_t size;
- void __pmem *addr;
+ void *addr;
struct badblocks bb;
};
* calling these symbols with arch_has_pmem_api() and redirect to the
* implementation in asm/pmem.h.
*/
-static inline void arch_memcpy_to_pmem(void __pmem *dst, const void *src,
- size_t n)
+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 __pmem *src,
- size_t n)
+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 __pmem *addr, size_t bytes,
+static inline size_t arch_copy_from_iter_pmem(void *addr, size_t bytes,
struct iov_iter *i)
{
BUG();
return 0;
}
-static inline void arch_clear_pmem(void __pmem *addr, size_t size)
+static inline void arch_clear_pmem(void *addr, size_t size)
{
BUG();
}
-static inline void arch_wb_cache_pmem(void __pmem *addr, size_t size)
+static inline void arch_wb_cache_pmem(void *addr, size_t size)
{
BUG();
}
-static inline void arch_invalidate_pmem(void __pmem *addr, size_t size)
+static inline void arch_invalidate_pmem(void *addr, size_t size)
{
BUG();
}
return IS_ENABLED(CONFIG_ARCH_HAS_PMEM_API);
}
-static inline int default_memcpy_from_pmem(void *dst, void __pmem const *src,
- size_t size)
-{
- memcpy(dst, (void __force *) src, size);
- return 0;
-}
-
/*
* memcpy_from_pmem - read from persistent memory with error handling
* @dst: destination buffer
*
* Returns 0 on success negative error code on failure.
*/
-static inline int memcpy_from_pmem(void *dst, void __pmem const *src,
- size_t size)
+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
- return default_memcpy_from_pmem(dst, src, size);
-}
-
-/*
- * These defaults seek to offer decent performance and minimize the
- * window between i/o completion and writes being durable on media.
- * However, it is undefined / architecture specific whether
- * ARCH_MEMREMAP_PMEM + default_memcpy_to_pmem is sufficient for
- * making data durable relative to i/o completion.
- */
-static inline void default_memcpy_to_pmem(void __pmem *dst, const void *src,
- size_t size)
-{
- memcpy((void __force *) dst, src, size);
-}
-
-static inline size_t default_copy_from_iter_pmem(void __pmem *addr,
- size_t bytes, struct iov_iter *i)
-{
- return copy_from_iter_nocache((void __force *)addr, bytes, i);
-}
-
-static inline void default_clear_pmem(void __pmem *addr, size_t size)
-{
- if (size == PAGE_SIZE && ((unsigned long)addr & ~PAGE_MASK) == 0)
- clear_page((void __force *)addr);
- else
- memset((void __force *)addr, 0, size);
+ memcpy(dst, src, size);
+ return 0;
}
/**
* data may still reside in cpu or platform buffers, so this operation
* must be followed by a blkdev_issue_flush() on the pmem block device.
*/
-static inline void memcpy_to_pmem(void __pmem *dst, const void *src, size_t n)
+static inline void memcpy_to_pmem(void *dst, const void *src, size_t n)
{
if (arch_has_pmem_api())
arch_memcpy_to_pmem(dst, src, n);
else
- default_memcpy_to_pmem(dst, src, n);
+ memcpy(dst, src, n);
}
/**
* Copy data from the iterator 'i' to the PMEM buffer starting at 'addr'.
* See blkdev_issue_flush() note for memcpy_to_pmem().
*/
-static inline size_t copy_from_iter_pmem(void __pmem *addr, size_t bytes,
+static inline size_t copy_from_iter_pmem(void *addr, size_t bytes,
struct iov_iter *i)
{
if (arch_has_pmem_api())
return arch_copy_from_iter_pmem(addr, bytes, i);
- return default_copy_from_iter_pmem(addr, bytes, i);
+ return copy_from_iter_nocache(addr, bytes, i);
}
/**
* Write zeros into the memory range starting at 'addr' for 'size' bytes.
* See blkdev_issue_flush() note for memcpy_to_pmem().
*/
-static inline void clear_pmem(void __pmem *addr, size_t size)
+static inline void clear_pmem(void *addr, size_t size)
{
if (arch_has_pmem_api())
arch_clear_pmem(addr, size);
else
- default_clear_pmem(addr, size);
+ memset(addr, 0, size);
}
/**
* For platforms that support clearing poison this flushes any poisoned
* ranges out of the cache
*/
-static inline void invalidate_pmem(void __pmem *addr, size_t size)
+static inline void invalidate_pmem(void *addr, size_t size)
{
if (arch_has_pmem_api())
arch_invalidate_pmem(addr, size);
* Write back the processor cache range starting at 'addr' for 'size' bytes.
* See blkdev_issue_flush() note for memcpy_to_pmem().
*/
-static inline void wb_cache_pmem(void __pmem *addr, size_t size)
+static inline void wb_cache_pmem(void *addr, size_t size)
{
if (arch_has_pmem_api())
arch_wb_cache_pmem(addr, size);
__kernel|
__force|
__iomem|
- __pmem|
__must_check|
__init_refok|
__kprobes|
#include <nd.h>
long pmem_direct_access(struct block_device *bdev, sector_t sector,
- void __pmem **kaddr, pfn_t *pfn, long size)
+ void **kaddr, pfn_t *pfn, long size)
{
struct pmem_device *pmem = bdev->bd_queue->queuedata;
resource_size_t offset = sector * 512 + pmem->data_offset;
projects / cascardo / linux.git / commitdiff