diff options
Diffstat (limited to 'arch/mips/cavium-octeon/executive/cvmx-bootmem.c')
| -rw-r--r-- | arch/mips/cavium-octeon/executive/cvmx-bootmem.c | 149 |
1 files changed, 86 insertions, 63 deletions
diff --git a/arch/mips/cavium-octeon/executive/cvmx-bootmem.c b/arch/mips/cavium-octeon/executive/cvmx-bootmem.c index 94d97ebfa036..ba8f82a29a81 100644 --- a/arch/mips/cavium-octeon/executive/cvmx-bootmem.c +++ b/arch/mips/cavium-octeon/executive/cvmx-bootmem.c @@ -122,8 +122,21 @@ static uint64_t cvmx_bootmem_phy_get_next(uint64_t addr) return cvmx_read64_uint64((addr + NEXT_OFFSET) | (1ull << 63)); } -void *cvmx_bootmem_alloc_range(uint64_t size, uint64_t alignment, - uint64_t min_addr, uint64_t max_addr) +/** + * Allocate a block of memory from the free list that was + * passed to the application by the bootloader within a specified + * address range. This is an allocate-only algorithm, so + * freeing memory is not possible. Allocation will fail if + * memory cannot be allocated in the requested range. + * + * @size: Size in bytes of block to allocate + * @min_addr: defines the minimum address of the range + * @max_addr: defines the maximum address of the range + * @alignment: Alignment required - must be power of 2 + * Returns pointer to block of memory, NULL on error + */ +static void *cvmx_bootmem_alloc_range(uint64_t size, uint64_t alignment, + uint64_t min_addr, uint64_t max_addr) { int64_t address; address = @@ -142,47 +155,6 @@ void *cvmx_bootmem_alloc_address(uint64_t size, uint64_t address, address + size); } -void *cvmx_bootmem_alloc(uint64_t size, uint64_t alignment) -{ - return cvmx_bootmem_alloc_range(size, alignment, 0, 0); -} - -void *cvmx_bootmem_alloc_named_range_once(uint64_t size, uint64_t min_addr, - uint64_t max_addr, uint64_t align, - char *name, - void (*init) (void *)) -{ - int64_t addr; - void *ptr; - uint64_t named_block_desc_addr; - - named_block_desc_addr = (uint64_t) - cvmx_bootmem_phy_named_block_find(name, - (uint32_t)CVMX_BOOTMEM_FLAG_NO_LOCKING); - - if (named_block_desc_addr) { - addr = CVMX_BOOTMEM_NAMED_GET_FIELD(named_block_desc_addr, - base_addr); - return cvmx_phys_to_ptr(addr); - } - - addr = cvmx_bootmem_phy_named_block_alloc(size, min_addr, max_addr, - align, name, - (uint32_t)CVMX_BOOTMEM_FLAG_NO_LOCKING); - - if (addr < 0) - return NULL; - ptr = cvmx_phys_to_ptr(addr); - - if (init) - init(ptr); - else - memset(ptr, 0, size); - - return ptr; -} -EXPORT_SYMBOL(cvmx_bootmem_alloc_named_range_once); - void *cvmx_bootmem_alloc_named_range(uint64_t size, uint64_t min_addr, uint64_t max_addr, uint64_t align, char *name) @@ -197,30 +169,12 @@ void *cvmx_bootmem_alloc_named_range(uint64_t size, uint64_t min_addr, return NULL; } -void *cvmx_bootmem_alloc_named_address(uint64_t size, uint64_t address, - char *name) -{ - return cvmx_bootmem_alloc_named_range(size, address, address + size, - 0, name); -} - void *cvmx_bootmem_alloc_named(uint64_t size, uint64_t alignment, char *name) { return cvmx_bootmem_alloc_named_range(size, 0, 0, alignment, name); } EXPORT_SYMBOL(cvmx_bootmem_alloc_named); -int cvmx_bootmem_free_named(char *name) -{ - return cvmx_bootmem_phy_named_block_free(name, 0); -} - -struct cvmx_bootmem_named_block_desc *cvmx_bootmem_find_named_block(char *name) -{ - return cvmx_bootmem_phy_named_block_find(name, 0); -} -EXPORT_SYMBOL(cvmx_bootmem_find_named_block); - void cvmx_bootmem_lock(void) { cvmx_spinlock_lock((cvmx_spinlock_t *) &(cvmx_bootmem_desc->lock)); @@ -603,7 +557,20 @@ bootmem_free_done: } -struct cvmx_bootmem_named_block_desc * +/** + * Finds a named memory block by name. + * Also used for finding an unused entry in the named block table. + * + * @name: Name of memory block to find. If NULL pointer given, then + * finds unused descriptor, if available. + * + * @flags: Flags to control options for the allocation. + * + * Returns Pointer to memory block descriptor, NULL if not found. + * If NULL returned when name parameter is NULL, then no memory + * block descriptors are available. + */ +static struct cvmx_bootmem_named_block_desc * cvmx_bootmem_phy_named_block_find(char *name, uint32_t flags) { unsigned int i; @@ -655,7 +622,58 @@ struct cvmx_bootmem_named_block_desc * return NULL; } -int cvmx_bootmem_phy_named_block_free(char *name, uint32_t flags) +void *cvmx_bootmem_alloc_named_range_once(uint64_t size, uint64_t min_addr, + uint64_t max_addr, uint64_t align, + char *name, + void (*init) (void *)) +{ + int64_t addr; + void *ptr; + uint64_t named_block_desc_addr; + + named_block_desc_addr = (uint64_t) + cvmx_bootmem_phy_named_block_find(name, + (uint32_t)CVMX_BOOTMEM_FLAG_NO_LOCKING); + + if (named_block_desc_addr) { + addr = CVMX_BOOTMEM_NAMED_GET_FIELD(named_block_desc_addr, + base_addr); + return cvmx_phys_to_ptr(addr); + } + + addr = cvmx_bootmem_phy_named_block_alloc(size, min_addr, max_addr, + align, name, + (uint32_t)CVMX_BOOTMEM_FLAG_NO_LOCKING); + + if (addr < 0) + return NULL; + ptr = cvmx_phys_to_ptr(addr); + + if (init) + init(ptr); + else + memset(ptr, 0, size); + + return ptr; +} +EXPORT_SYMBOL(cvmx_bootmem_alloc_named_range_once); + +struct cvmx_bootmem_named_block_desc *cvmx_bootmem_find_named_block(char *name) +{ + return cvmx_bootmem_phy_named_block_find(name, 0); +} +EXPORT_SYMBOL(cvmx_bootmem_find_named_block); + +/** + * Frees a named block. + * + * @name: name of block to free + * @flags: flags for passing options + * + * Returns 0 on failure + * 1 on success + */ +static int cvmx_bootmem_phy_named_block_free(char *name, uint32_t flags) { struct cvmx_bootmem_named_block_desc *named_block_ptr; @@ -699,6 +717,11 @@ int cvmx_bootmem_phy_named_block_free(char *name, uint32_t flags) return named_block_ptr != NULL; /* 0 on failure, 1 on success */ } +int cvmx_bootmem_free_named(char *name) +{ + return cvmx_bootmem_phy_named_block_free(name, 0); +} + int64_t cvmx_bootmem_phy_named_block_alloc(uint64_t size, uint64_t min_addr, uint64_t max_addr, uint64_t alignment, |