194 lines
6.0 KiB
C
194 lines
6.0 KiB
C
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/***********************license start***************
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* Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
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* reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* * Neither the name of Cavium Networks nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
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* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
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* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
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* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
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* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
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* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
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* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
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* POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
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* OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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*
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*
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* For any questions regarding licensing please contact marketing@caviumnetworks.com
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*
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***********************license end**************************************/
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/**
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* @file
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*
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* Support library for the hardware Free Pool Allocator.
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*
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* <hr>$Revision: 41586 $<hr>
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*
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*/
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#include "cvmx-config.h"
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#include "cvmx.h"
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#include "cvmx-fpa.h"
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#include "cvmx-ipd.h"
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/**
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* Current state of all the pools. Use access functions
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* instead of using it directly.
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*/
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CVMX_SHARED cvmx_fpa_pool_info_t cvmx_fpa_pool_info[CVMX_FPA_NUM_POOLS];
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/**
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* Setup a FPA pool to control a new block of memory. The
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* buffer pointer must be a physical address.
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*
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* @param pool Pool to initialize
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* 0 <= pool < 8
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* @param name Constant character string to name this pool.
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* String is not copied.
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* @param buffer Pointer to the block of memory to use. This must be
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* accessable by all processors and external hardware.
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* @param block_size Size for each block controlled by the FPA
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* @param num_blocks Number of blocks
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*
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* @return 0 on Success,
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* -1 on failure
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*/
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int cvmx_fpa_setup_pool(uint64_t pool, const char *name, void *buffer,
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uint64_t block_size, uint64_t num_blocks)
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{
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char *ptr;
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if (!buffer)
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{
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cvmx_dprintf("ERROR: cvmx_fpa_setup_pool: NULL buffer pointer!\n");
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return(-1);
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}
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if (pool >= CVMX_FPA_NUM_POOLS)
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{
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cvmx_dprintf("ERROR: cvmx_fpa_setup_pool: Illegal pool!\n");
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return(-1);
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}
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if (block_size < CVMX_FPA_MIN_BLOCK_SIZE)
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{
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cvmx_dprintf("ERROR: cvmx_fpa_setup_pool: Block size too small.\n");
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return(-1);
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}
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if (((unsigned long)buffer & (CVMX_FPA_ALIGNMENT-1)) != 0)
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{
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cvmx_dprintf("ERROR: cvmx_fpa_setup_pool: Buffer not aligned properly.\n");
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return(-1);
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}
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cvmx_fpa_pool_info[pool].name = name;
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cvmx_fpa_pool_info[pool].size = block_size;
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cvmx_fpa_pool_info[pool].starting_element_count = num_blocks;
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cvmx_fpa_pool_info[pool].base = buffer;
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ptr = (char*)buffer;
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while (num_blocks--)
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{
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cvmx_fpa_free(ptr, pool, 0);
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ptr += block_size;
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}
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return(0);
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}
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/**
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* Shutdown a Memory pool and validate that it had all of
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* the buffers originally placed in it.
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*
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* @param pool Pool to shutdown
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* @return Zero on success
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* - Positive is count of missing buffers
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* - Negative is too many buffers or corrupted pointers
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*/
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uint64_t cvmx_fpa_shutdown_pool(uint64_t pool)
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{
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uint64_t errors = 0;
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uint64_t count = 0;
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uint64_t base = cvmx_ptr_to_phys(cvmx_fpa_pool_info[pool].base);
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uint64_t finish = base + cvmx_fpa_pool_info[pool].size * cvmx_fpa_pool_info[pool].starting_element_count;
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void *ptr;
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uint64_t address;
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count = 0;
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do
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{
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ptr = cvmx_fpa_alloc(pool);
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if (ptr)
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address = cvmx_ptr_to_phys(ptr);
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else
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address = 0;
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if (address)
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{
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if ((address >= base) && (address < finish) &&
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(((address - base) % cvmx_fpa_pool_info[pool].size) == 0))
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{
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count++;
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}
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else
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{
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cvmx_dprintf("ERROR: cvmx_fpa_shutdown_pool: Illegal address 0x%llx in pool %s(%d)\n",
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(unsigned long long)address, cvmx_fpa_pool_info[pool].name, (int)pool);
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errors++;
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}
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}
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} while (address);
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#ifdef CVMX_ENABLE_PKO_FUNCTIONS
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if (pool == 0)
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cvmx_ipd_free_ptr();
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#endif
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if (errors)
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{
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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",
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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);
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return -errors;
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}
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else
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return 0;
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}
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uint64_t cvmx_fpa_get_block_size(uint64_t pool)
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{
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switch (pool)
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{
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case 0: return(CVMX_FPA_POOL_0_SIZE);
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case 1: return(CVMX_FPA_POOL_1_SIZE);
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case 2: return(CVMX_FPA_POOL_2_SIZE);
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case 3: return(CVMX_FPA_POOL_3_SIZE);
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case 4: return(CVMX_FPA_POOL_4_SIZE);
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case 5: return(CVMX_FPA_POOL_5_SIZE);
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case 6: return(CVMX_FPA_POOL_6_SIZE);
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case 7: return(CVMX_FPA_POOL_7_SIZE);
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default: return(0);
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}
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}
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