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/***********************license start***************
* Author: Cavium Networks
*
* Contact: support@caviumnetworks.com
* This file is part of the OCTEON SDK
*
* Copyright (c) 2003-2008 Cavium Networks
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, Version 2, as
* published by the Free Software Foundation.
*
* This file is distributed in the hope that it will be useful, but
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
* NONINFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this file; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
* or visit http://www.gnu.org/licenses/.
*
* This file may also be available under a different license from Cavium.
* Contact Cavium Networks for more information
***********************license end**************************************/
/**
* @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
* accessable 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;
}
}
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