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/***********************license start***************
* Copyright (c) 2003-2010 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
*
* Interface to RAID block. This is not available on all chips.
*
* <hr>$Revision: 70030 $<hr>
*/
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#include <linux/module.h>
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-config.h>
#include <asm/octeon/cvmx-cmd-queue.h>
#include <asm/octeon/cvmx-raid.h>
#else
#include "executive-config.h"
#include "cvmx-config.h"
#include "cvmx.h"
#include "cvmx-cmd-queue.h"
#include "cvmx-raid.h"
#endif
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
/**
* Initialize the RAID block
*
* @param polynomial Coefficients for the RAID polynomial
*
* @return Zero on success, negative on failure
*/
int cvmx_raid_initialize(cvmx_rad_reg_polynomial_t polynomial)
{
cvmx_cmd_queue_result_t result;
cvmx_rad_reg_cmd_buf_t rad_reg_cmd_buf;
cvmx_write_csr(CVMX_RAD_REG_POLYNOMIAL, polynomial.u64);
result = cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_RAID, 0,
CVMX_FPA_OUTPUT_BUFFER_POOL,
CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE);
if (result != CVMX_CMD_QUEUE_SUCCESS)
return -1;
rad_reg_cmd_buf.u64 = 0;
rad_reg_cmd_buf.s.dwb = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/128;
rad_reg_cmd_buf.s.pool = CVMX_FPA_OUTPUT_BUFFER_POOL;
rad_reg_cmd_buf.s.size = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/8;
rad_reg_cmd_buf.s.ptr = cvmx_ptr_to_phys(cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_RAID))>>7;
cvmx_write_csr(CVMX_RAD_REG_CMD_BUF, rad_reg_cmd_buf.u64);
return 0;
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(cvmx_raid_initialize);
#endif
/**
* Shutdown the RAID block. RAID must be idle when
* this function is called.
*
* @return Zero on success, negative on failure
*/
int cvmx_raid_shutdown(void)
{
cvmx_rad_reg_ctl_t rad_reg_ctl;
if (cvmx_cmd_queue_length(CVMX_CMD_QUEUE_RAID))
{
cvmx_dprintf("ERROR: cvmx_raid_shutdown: RAID not idle.\n");
return -1;
}
rad_reg_ctl.u64 = cvmx_read_csr(CVMX_RAD_REG_CTL);
rad_reg_ctl.s.reset = 1;
cvmx_write_csr(CVMX_RAD_REG_CTL, rad_reg_ctl.u64);
cvmx_wait(100);
cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_RAID);
cvmx_write_csr(CVMX_RAD_REG_CMD_BUF, 0);
return 0;
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(cvmx_raid_shutdown);
#endif
/**
* Submit a command to the RAID block
*
* @param num_words Number of command words to submit
* @param words Command words
*
* @return Zero on success, negative on failure
*/
int cvmx_raid_submit(int num_words, cvmx_raid_word_t words[])
{
cvmx_cmd_queue_result_t result = cvmx_cmd_queue_write(CVMX_CMD_QUEUE_RAID, 1, num_words, (uint64_t *)words);
if (result == CVMX_CMD_QUEUE_SUCCESS)
cvmx_write_csr(CVMX_ADDR_DID(CVMX_FULL_DID(14, 0)), num_words);
return result;
}
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
EXPORT_SYMBOL(cvmx_raid_submit);
#endif
#endif
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