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/***********************license start***************
* Copyright (c) 2011 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Inc. nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Support library for the CN63XX, CN68XX hardware HFA engine.
*
*/
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-config.h>
#include <asm/octeon/cvmx-pko.h>
#include <asm/octeon/cvmx-helper.h>
#include <asm/octeon/cvmx-clock.h>
#include <asm/octeon/cvmx-dfa-defs.h>
#include <asm/octeon/cvmx-hfa.h>
#else
#include "executive-config.h"
#ifdef CVMX_ENABLE_DFA_FUNCTIONS
#include "cvmx-config.h"
#include "cvmx.h"
#include "cvmx-fau.h"
#include "cvmx-cmd-queue.h"
#include "cvmx-hfa.h"
#endif
#endif
#ifdef CVMX_ENABLE_DFA_FUNCTIONS
/**
* Initialize the DFA block
*
* @return Zero on success, negative on failure
*/
int cvmx_hfa_initialize(void)
{
cvmx_dfa_difctl_t control;
cvmx_cmd_queue_result_t result;
void *initial_base_address;
int cmdsize;
cmdsize = ((CVMX_FPA_DFA_POOL_SIZE - 8) / sizeof (cvmx_dfa_command_t)) *
sizeof (cvmx_dfa_command_t);
result = cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_DFA, 0,
CVMX_FPA_DFA_POOL, cmdsize + 8);
if (result != CVMX_CMD_QUEUE_SUCCESS)
return -1;
control.u64 = 0;
control.s.dwbcnt = CVMX_FPA_DFA_POOL_SIZE / 128;
control.s.pool = CVMX_FPA_DFA_POOL;
control.s.size = cmdsize / sizeof(cvmx_dfa_command_t);
CVMX_SYNCWS;
cvmx_write_csr(CVMX_DFA_DIFCTL, control.u64);
initial_base_address = cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_DFA);
CVMX_SYNCWS;
cvmx_write_csr(CVMX_DFA_DIFRDPTR, cvmx_ptr_to_phys(initial_base_address));
cvmx_read_csr(CVMX_DFA_DIFRDPTR); /* Read to make sure setup is complete */
return 0;
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(cvmx_hfa_initialize);
#endif
/**
* Shutdown the DFA block. DFA must be idle when
* this function is called.
*
* @return Zero on success, negative on failure
*/
int cvmx_hfa_shutdown(void)
{
if (cvmx_cmd_queue_length(CVMX_CMD_QUEUE_DFA))
{
cvmx_dprintf("ERROR: cvmx_hfa_shutdown: DFA not idle.\n");
return -1;
}
cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_DFA);
return 0;
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(cvmx_hfa_shutdown);
#endif
/**
* Submit a command to the DFA block
*
* @param command DFA command to submit
*
* @return Zero on success, negative on failure
*/
int cvmx_hfa_submit(cvmx_dfa_command_t *command)
{
cvmx_cmd_queue_result_t result = cvmx_cmd_queue_write(CVMX_CMD_QUEUE_DFA, 1, 4, command->u64);
if (result == CVMX_CMD_QUEUE_SUCCESS)
cvmx_write_csr(CVMX_DFA_DBELL, 1);
return result;
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(cvmx_hfa_submit);
#endif
void *hfa_bootmem_alloc (uint64_t size, uint64_t alignment)
{
int64_t address;
address = cvmx_bootmem_phy_alloc(size, 0, 0, alignment, 0);
if (address > 0)
return cvmx_phys_to_ptr(address);
else
return NULL;
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(hfa_bootmem_alloc);
#endif
int hfa_bootmem_free (void *ptr, uint64_t size)
{
uint64_t address;
address = cvmx_ptr_to_phys (ptr);
return __cvmx_bootmem_phy_free (address, size, 0);
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(hfa_bootmem_free);
#endif
#endif
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