diff options
Diffstat (limited to 'sys/contrib/octeon-sdk/cvmx-raid.c')
| -rw-r--r-- | sys/contrib/octeon-sdk/cvmx-raid.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/sys/contrib/octeon-sdk/cvmx-raid.c b/sys/contrib/octeon-sdk/cvmx-raid.c new file mode 100644 index 000000000000..2e000f5a7ff3 --- /dev/null +++ b/sys/contrib/octeon-sdk/cvmx-raid.c @@ -0,0 +1,148 @@ +/***********************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 |