cvmx-fpa.rar_Free!

/** * @file * * Support library for the hardware Free Pool Allocator. * * */ #include "cvmx-config.h" #include "cvmx.h" #include "cvmx-fpa.h" #include "cvmx-ipd.h" /** * Current state of all the pools. Use access functions * instead of using it directly. */ CVMX_SHARED cvmx_fpa_pool_info_t cvmx_fpa_pool_info[CVMX_FPA_NUM_POOLS]; /** * Setup a FPA pool to control a new block of memory. The * buffer pointer must be a physical address. * * @pool: Pool to initialize * 0 <= pool < 8 * @name: Constant character string to name this pool. * String is not copied. * @buffer: Pointer to the block of memory to use. This must be * accessible by all processors and external hardware. * @block_size: Size for each block controlled by the FPA * @num_blocks: Number of blocks * * Returns 0 on Success, * -1 on failure */ int cvmx_fpa_setup_pool(uint64_t pool, const char *name, void *buffer, uint64_t block_size, uint64_t num_blocks) { char *ptr; if (!buffer) { cvmx_dprintf ("ERROR: cvmx_fpa_setup_pool: NULL buffer pointer!\n"); return -1; } if (pool >= CVMX_FPA_NUM_POOLS) { cvmx_dprintf("ERROR: cvmx_fpa_setup_pool: Illegal pool!\n"); return -1; } if (block_size < CVMX_FPA_MIN_BLOCK_SIZE) { cvmx_dprintf ("ERROR: cvmx_fpa_setup_pool: Block size too small.\n"); return -1; } if (((unsigned long)buffer & (CVMX_FPA_ALIGNMENT - 1)) != 0) { cvmx_dprintf ("ERROR: cvmx_fpa_setup_pool: Buffer not aligned properly.\n"); return -1; } cvmx_fpa_pool_info[pool].name = name; cvmx_fpa_pool_info[pool].size = block_size; cvmx_fpa_pool_info[pool].starting_element_count = num_blocks; cvmx_fpa_pool_info[pool].base = buffer; ptr = (char *)buffer; while (num_blocks--) { cvmx_fpa_free(ptr, pool, 0); ptr += block_size; } return 0; } /** * Shutdown a Memory pool and validate that it had all of * the buffers originally placed in it. * * @pool: Pool to shutdown * Returns Zero on success * - Positive is count of missing buffers * - Negative is too many buffers or corrupted pointers */ uint64_t cvmx_fpa_shutdown_pool(uint64_t pool) { uint64_t errors = 0; uint64_t count = 0; uint64_t base = cvmx_ptr_to_phys(cvmx_fpa_pool_info[pool].base); uint64_t finish = base + cvmx_fpa_pool_info[pool].size * cvmx_fpa_pool_info[pool].starting_element_count; void *ptr; uint64_t address; count = 0; do { ptr = cvmx_fpa_alloc(pool); if (ptr) address = cvmx_ptr_to_phys(ptr); else address = 0; if (address) { if ((address >= base) && (address < finish) && (((address - base) % cvmx_fpa_pool_info[pool].size) == 0)) { count++; } else { cvmx_dprintf ("ERROR: cvmx_fpa_shutdown_pool: Illegal address 0x%llx in pool %s(%d)\n", (unsigned long long)address, cvmx_fpa_pool_info[pool].name, (int)pool); errors++; } } } while (address); #ifdef CVMX_ENABLE_PKO_FUNCTIONS if (pool == 0) cvmx_ipd_free_ptr(); #endif if (errors) { cvmx_dprintf ("ERROR: cvmx_fpa_shutdown_pool: Pool %s(%d) started at 0x%llx, ended at 0x%llx, with a step of 0x%llx\n", cvmx_fpa_pool_info[pool].name, (int)pool, (unsigned long long)base, (unsigned long long)finish, (unsigned long long)cvmx_fpa_pool_info[pool].size); return -errors; } else return 0; } uint64_t cvmx_fpa_get_block_size(uint64_t pool) { switch (pool) { case 0: return CVMX_FPA_POOL_0_SIZE; case 1: return CVMX_FPA_POOL_1_SIZE; case 2: return CVMX_FPA_POOL_2_SIZE; case 3: return CVMX_FPA_POOL_3_SIZE; case 4: return CVMX_FPA_POOL_4_SIZE; case 5: return CVMX_FPA_POOL_5_SIZE; case 6: return CVMX_FPA_POOL_6_SIZE; case 7: return CVMX_FPA_POOL_7_SIZE; default: return 0; } }