149 lines
4.7 KiB
C
149 lines
4.7 KiB
C
/***********************license start***************
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* Copyright (c) 2003-2010 Cavium Inc. (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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* * Neither the name of Cavium Inc. 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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* This Software, including technical data, may be subject to U.S. export control
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* laws, including the U.S. Export Administration Act and its associated
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* regulations, and may be subject to export or import regulations in other
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* countries.
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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 INC. MAKES NO PROMISES, REPRESENTATIONS OR
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* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
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* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
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* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
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* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
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* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
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* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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***********************license end**************************************/
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/**
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* @file
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*
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* Interface to RAID block. This is not available on all chips.
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*
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* <hr>$Revision: 70030 $<hr>
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*/
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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#include <linux/module.h>
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#include <asm/octeon/cvmx.h>
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#include <asm/octeon/cvmx-config.h>
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#include <asm/octeon/cvmx-cmd-queue.h>
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#include <asm/octeon/cvmx-raid.h>
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#else
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#include "executive-config.h"
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#include "cvmx-config.h"
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#include "cvmx.h"
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#include "cvmx-cmd-queue.h"
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#include "cvmx-raid.h"
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#endif
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#ifdef CVMX_ENABLE_PKO_FUNCTIONS
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/**
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* Initialize the RAID block
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*
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* @param polynomial Coefficients for the RAID polynomial
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*
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* @return Zero on success, negative on failure
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*/
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int cvmx_raid_initialize(cvmx_rad_reg_polynomial_t polynomial)
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{
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cvmx_cmd_queue_result_t result;
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cvmx_rad_reg_cmd_buf_t rad_reg_cmd_buf;
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cvmx_write_csr(CVMX_RAD_REG_POLYNOMIAL, polynomial.u64);
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result = cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_RAID, 0,
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CVMX_FPA_OUTPUT_BUFFER_POOL,
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CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE);
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if (result != CVMX_CMD_QUEUE_SUCCESS)
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return -1;
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rad_reg_cmd_buf.u64 = 0;
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rad_reg_cmd_buf.s.dwb = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/128;
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rad_reg_cmd_buf.s.pool = CVMX_FPA_OUTPUT_BUFFER_POOL;
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rad_reg_cmd_buf.s.size = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/8;
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rad_reg_cmd_buf.s.ptr = cvmx_ptr_to_phys(cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_RAID))>>7;
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cvmx_write_csr(CVMX_RAD_REG_CMD_BUF, rad_reg_cmd_buf.u64);
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return 0;
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}
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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EXPORT_SYMBOL(cvmx_raid_initialize);
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#endif
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/**
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* Shutdown the RAID block. RAID must be idle when
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* this function is called.
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*
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* @return Zero on success, negative on failure
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*/
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int cvmx_raid_shutdown(void)
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{
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cvmx_rad_reg_ctl_t rad_reg_ctl;
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if (cvmx_cmd_queue_length(CVMX_CMD_QUEUE_RAID))
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{
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cvmx_dprintf("ERROR: cvmx_raid_shutdown: RAID not idle.\n");
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return -1;
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}
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rad_reg_ctl.u64 = cvmx_read_csr(CVMX_RAD_REG_CTL);
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rad_reg_ctl.s.reset = 1;
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cvmx_write_csr(CVMX_RAD_REG_CTL, rad_reg_ctl.u64);
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cvmx_wait(100);
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cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_RAID);
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cvmx_write_csr(CVMX_RAD_REG_CMD_BUF, 0);
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return 0;
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}
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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EXPORT_SYMBOL(cvmx_raid_shutdown);
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#endif
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/**
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* Submit a command to the RAID block
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*
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* @param num_words Number of command words to submit
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* @param words Command words
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*
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* @return Zero on success, negative on failure
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*/
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int cvmx_raid_submit(int num_words, cvmx_raid_word_t words[])
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{
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cvmx_cmd_queue_result_t result = cvmx_cmd_queue_write(CVMX_CMD_QUEUE_RAID, 1, num_words, (uint64_t *)words);
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if (result == CVMX_CMD_QUEUE_SUCCESS)
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cvmx_write_csr(CVMX_ADDR_DID(CVMX_FULL_DID(14, 0)), num_words);
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return result;
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}
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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EXPORT_SYMBOL(cvmx_raid_submit);
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#endif
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#endif
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