diff options
Diffstat (limited to 'cvmx-hfa.c')
| -rw-r--r-- | cvmx-hfa.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/cvmx-hfa.c b/cvmx-hfa.c new file mode 100644 index 000000000000..74dd04eadd31 --- /dev/null +++ b/cvmx-hfa.c @@ -0,0 +1,174 @@ +/***********************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 |