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Diffstat (limited to 'cvmx-zip.c')
| -rw-r--r-- | cvmx-zip.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/cvmx-zip.c b/cvmx-zip.c new file mode 100644 index 0000000000000..a80c54bdb391f --- /dev/null +++ b/cvmx-zip.c @@ -0,0 +1,127 @@ +/***********************license start*************** + * Copyright (c) 2003-2008 Cavium Networks (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 Networks nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + * + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM NETWORKS 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. + * + * + * For any questions regarding licensing please contact marketing@caviumnetworks.com + * + ***********************license end**************************************/ + + + + + + +/** + * @file + * + * Source file for the zip (deflate) block + * + * <hr>$Revision: 41586 $<hr> + */ + +#include "executive-config.h" +#include "cvmx-config.h" +#include "cvmx.h" +#include "cvmx-cmd-queue.h" +#include "cvmx-zip.h" + +#ifdef CVMX_ENABLE_PKO_FUNCTIONS + +/** + * Initialize the ZIP block + * + * @return Zero on success, negative on failure + */ +int cvmx_zip_initialize(void) +{ + cvmx_zip_cmd_buf_t zip_cmd_buf; + cvmx_cmd_queue_result_t result; + result = cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_ZIP, 0, + CVMX_FPA_OUTPUT_BUFFER_POOL, + CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE); + if (result != CVMX_CMD_QUEUE_SUCCESS) + return -1; + + zip_cmd_buf.u64 = 0; + zip_cmd_buf.s.dwb = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/128; + zip_cmd_buf.s.pool = CVMX_FPA_OUTPUT_BUFFER_POOL; + zip_cmd_buf.s.size = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE/8; + zip_cmd_buf.s.ptr = cvmx_ptr_to_phys(cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_ZIP))>>7; + cvmx_write_csr(CVMX_ZIP_CMD_BUF, zip_cmd_buf.u64); + cvmx_write_csr(CVMX_ZIP_ERROR, 1); + cvmx_read_csr(CVMX_ZIP_CMD_BUF); /* Read to make sure setup is complete */ + return 0; +} + +/** + * Shutdown the ZIP block. ZIP must be idle when + * this function is called. + * + * @return Zero on success, negative on failure + */ +int cvmx_zip_shutdown(void) +{ + cvmx_zip_cmd_ctl_t zip_cmd_ctl; + + if (cvmx_cmd_queue_length(CVMX_CMD_QUEUE_ZIP)) + { + cvmx_dprintf("ERROR: cvmx_zip_shutdown: ZIP not idle.\n"); + return -1; + } + + zip_cmd_ctl.u64 = cvmx_read_csr(CVMX_ZIP_CMD_CTL); + zip_cmd_ctl.s.reset = 1; + cvmx_write_csr(CVMX_ZIP_CMD_CTL, zip_cmd_ctl.u64); + cvmx_wait(100); + + cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_ZIP); + return 0; +} + +/** + * Submit a command to the ZIP block + * + * @param command Zip command to submit + * + * @return Zero on success, negative on failure + */ +int cvmx_zip_submit(cvmx_zip_command_t *command) +{ + cvmx_cmd_queue_result_t result = cvmx_cmd_queue_write(CVMX_CMD_QUEUE_ZIP, 1, 8, command->u64); + if (result == CVMX_CMD_QUEUE_SUCCESS) + cvmx_write_csr(CVMX_ADDR_DID(CVMX_FULL_DID(7, 0)), 8); + return result; +} + +#endif + |