vendor/octeon-sdk/1.9.0

1 files changed, 132 insertions, 0 deletions

diff --git a/cvmx-raid.c b/cvmx-raid.c
new file mode 100644
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--- /dev/null
+++ b/cvmx-raid.c
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+/***********************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
+ *
+ * Interface to RAID block. This is not available on all chips.
+ *
+ * <hr>$Revision: 41586 $<hr>
+ */
+#include "executive-config.h"
+#include "cvmx-config.h"
+#include "cvmx.h"
+#include "cvmx-cmd-queue.h"
+#include "cvmx-raid.h"
+
+#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;
+}
+
+
+/**
+ * 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;
+}
+
+
+/**
+ * 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;
+}
+
+#endif