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+/***********************license start***************
+ * Copyright (c) 2011 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
+ *
+ * Support library for the CN63XX, CN68XX hardware HFA engine.
+ *
+ */
+#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
+#include <asm/octeon/cvmx.h>
+#include <asm/octeon/cvmx-config.h>
+#include <asm/octeon/cvmx-pko.h>
+#include <asm/octeon/cvmx-helper.h>
+#include <asm/octeon/cvmx-clock.h>
+#include <asm/octeon/cvmx-dfa-defs.h>
+#include <asm/octeon/cvmx-hfa.h>
+#else
+#include "executive-config.h"
+#ifdef CVMX_ENABLE_DFA_FUNCTIONS
+
+#include "cvmx-config.h"
+#include "cvmx.h"
+#include "cvmx-fau.h"
+#include "cvmx-cmd-queue.h"
+#include "cvmx-hfa.h"
+#endif
+#endif
+
+#ifdef CVMX_ENABLE_DFA_FUNCTIONS
+
+/**
+ * Initialize the DFA block
+ *
+ * @return Zero on success, negative on failure
+ */
+int cvmx_hfa_initialize(void)
+{
+ cvmx_dfa_difctl_t control;
+ cvmx_cmd_queue_result_t result;
+ void *initial_base_address;
+ int cmdsize;
+
+ cmdsize = ((CVMX_FPA_DFA_POOL_SIZE - 8) / sizeof (cvmx_dfa_command_t)) *
+ sizeof (cvmx_dfa_command_t);
+ result = cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_DFA, 0,
+ CVMX_FPA_DFA_POOL, cmdsize + 8);
+ if (result != CVMX_CMD_QUEUE_SUCCESS)
+ return -1;
+
+ control.u64 = 0;
+ control.s.dwbcnt = CVMX_FPA_DFA_POOL_SIZE / 128;
+ control.s.pool = CVMX_FPA_DFA_POOL;
+ control.s.size = cmdsize / sizeof(cvmx_dfa_command_t);
+ CVMX_SYNCWS;
+ cvmx_write_csr(CVMX_DFA_DIFCTL, control.u64);
+ initial_base_address = cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_DFA);
+ CVMX_SYNCWS;
+ cvmx_write_csr(CVMX_DFA_DIFRDPTR, cvmx_ptr_to_phys(initial_base_address));
+ cvmx_read_csr(CVMX_DFA_DIFRDPTR); /* Read to make sure setup is complete */
+ return 0;
+}
+#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
+EXPORT_SYMBOL(cvmx_hfa_initialize);
+#endif
+
+/**
+ * Shutdown the DFA block. DFA must be idle when
+ * this function is called.
+ *
+ * @return Zero on success, negative on failure
+ */
+int cvmx_hfa_shutdown(void)
+{
+ if (cvmx_cmd_queue_length(CVMX_CMD_QUEUE_DFA))
+ {
+ cvmx_dprintf("ERROR: cvmx_hfa_shutdown: DFA not idle.\n");
+ return -1;
+ }
+ cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_DFA);
+ return 0;
+}
+#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
+EXPORT_SYMBOL(cvmx_hfa_shutdown);
+#endif
+
+/**
+ * Submit a command to the DFA block
+ *
+ * @param command DFA command to submit
+ *
+ * @return Zero on success, negative on failure
+ */
+int cvmx_hfa_submit(cvmx_dfa_command_t *command)
+{
+ cvmx_cmd_queue_result_t result = cvmx_cmd_queue_write(CVMX_CMD_QUEUE_DFA, 1, 4, command->u64);
+ if (result == CVMX_CMD_QUEUE_SUCCESS)
+ cvmx_write_csr(CVMX_DFA_DBELL, 1);
+ return result;
+}
+#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
+EXPORT_SYMBOL(cvmx_hfa_submit);
+#endif
+
+void *hfa_bootmem_alloc (uint64_t size, uint64_t alignment)
+{
+ int64_t address;
+
+ address = cvmx_bootmem_phy_alloc(size, 0, 0, alignment, 0);
+
+ if (address > 0)
+ return cvmx_phys_to_ptr(address);
+ else
+ return NULL;
+}
+
+#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
+EXPORT_SYMBOL(hfa_bootmem_alloc);
+#endif
+
+int hfa_bootmem_free (void *ptr, uint64_t size)
+{
+ uint64_t address;
+ address = cvmx_ptr_to_phys (ptr);
+ return __cvmx_bootmem_phy_free (address, size, 0);
+}
+
+#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
+EXPORT_SYMBOL(hfa_bootmem_free);
+#endif
+
+#endif