244 lines
7.4 KiB
C
244 lines
7.4 KiB
C
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/***********************license start***************
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* Author: Cavium Networks
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*
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* Contact: support@caviumnetworks.com
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* This file is part of the OCTEON SDK
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*
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* Copyright (c) 2003-2008 Cavium Networks
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* or visit http://www.gnu.org/licenses/.
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*
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* This file may also be available under a different license from Cavium.
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* Contact Cavium Networks for more information
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***********************license end**************************************/
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/**
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* @file
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*
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* Helper functions for FPA setup.
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*
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*/
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#include "executive-config.h"
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#include "cvmx-config.h"
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#include "cvmx.h"
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#include "cvmx-bootmem.h"
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#include "cvmx-fpa.h"
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#include "cvmx-helper-fpa.h"
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/**
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* Allocate memory for and initialize a single FPA pool.
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*
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* @pool: Pool to initialize
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* @buffer_size: Size of buffers to allocate in bytes
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* @buffers: Number of buffers to put in the pool. Zero is allowed
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* @name: String name of the pool for debugging purposes
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* Returns Zero on success, non-zero on failure
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*/
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static int __cvmx_helper_initialize_fpa_pool(int pool, uint64_t buffer_size,
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uint64_t buffers, const char *name)
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{
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uint64_t current_num;
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void *memory;
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uint64_t align = CVMX_CACHE_LINE_SIZE;
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/*
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* Align the allocation so that power of 2 size buffers are
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* naturally aligned.
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*/
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while (align < buffer_size)
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align = align << 1;
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if (buffers == 0)
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return 0;
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current_num = cvmx_read_csr(CVMX_FPA_QUEX_AVAILABLE(pool));
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if (current_num) {
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cvmx_dprintf("Fpa pool %d(%s) already has %llu buffers. "
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"Skipping setup.\n",
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pool, name, (unsigned long long)current_num);
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return 0;
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}
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memory = cvmx_bootmem_alloc(buffer_size * buffers, align);
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if (memory == NULL) {
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cvmx_dprintf("Out of memory initializing fpa pool %d(%s).\n",
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pool, name);
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return -1;
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}
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cvmx_fpa_setup_pool(pool, name, memory, buffer_size, buffers);
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return 0;
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}
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/**
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* Allocate memory and initialize the FPA pools using memory
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* from cvmx-bootmem. Specifying zero for the number of
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* buffers will cause that FPA pool to not be setup. This is
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* useful if you aren't using some of the hardware and want
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* to save memory. Use cvmx_helper_initialize_fpa instead of
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* this function directly.
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*
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* @pip_pool: Should always be CVMX_FPA_PACKET_POOL
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* @pip_size: Should always be CVMX_FPA_PACKET_POOL_SIZE
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* @pip_buffers:
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* Number of packet buffers.
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* @wqe_pool: Should always be CVMX_FPA_WQE_POOL
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* @wqe_size: Should always be CVMX_FPA_WQE_POOL_SIZE
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* @wqe_entries:
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* Number of work queue entries
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* @pko_pool: Should always be CVMX_FPA_OUTPUT_BUFFER_POOL
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* @pko_size: Should always be CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE
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* @pko_buffers:
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* PKO Command buffers. You should at minimum have two per
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* each PKO queue.
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* @tim_pool: Should always be CVMX_FPA_TIMER_POOL
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* @tim_size: Should always be CVMX_FPA_TIMER_POOL_SIZE
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* @tim_buffers:
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* TIM ring buffer command queues. At least two per timer bucket
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* is recommened.
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* @dfa_pool: Should always be CVMX_FPA_DFA_POOL
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* @dfa_size: Should always be CVMX_FPA_DFA_POOL_SIZE
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* @dfa_buffers:
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* DFA command buffer. A relatively small (32 for example)
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* number should work.
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* Returns Zero on success, non-zero if out of memory
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*/
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static int __cvmx_helper_initialize_fpa(int pip_pool, int pip_size,
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int pip_buffers, int wqe_pool,
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int wqe_size, int wqe_entries,
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int pko_pool, int pko_size,
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int pko_buffers, int tim_pool,
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int tim_size, int tim_buffers,
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int dfa_pool, int dfa_size,
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int dfa_buffers)
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{
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int status;
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cvmx_fpa_enable();
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if ((pip_buffers > 0) && (pip_buffers <= 64))
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cvmx_dprintf
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("Warning: %d packet buffers may not be enough for hardware"
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" prefetch. 65 or more is recommended.\n", pip_buffers);
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if (pip_pool >= 0) {
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status =
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__cvmx_helper_initialize_fpa_pool(pip_pool, pip_size,
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pip_buffers,
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"Packet Buffers");
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if (status)
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return status;
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}
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if (wqe_pool >= 0) {
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status =
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__cvmx_helper_initialize_fpa_pool(wqe_pool, wqe_size,
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wqe_entries,
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"Work Queue Entries");
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if (status)
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return status;
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}
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if (pko_pool >= 0) {
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status =
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__cvmx_helper_initialize_fpa_pool(pko_pool, pko_size,
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pko_buffers,
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"PKO Command Buffers");
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if (status)
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return status;
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}
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if (tim_pool >= 0) {
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status =
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__cvmx_helper_initialize_fpa_pool(tim_pool, tim_size,
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tim_buffers,
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"TIM Command Buffers");
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if (status)
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return status;
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}
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if (dfa_pool >= 0) {
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status =
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__cvmx_helper_initialize_fpa_pool(dfa_pool, dfa_size,
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dfa_buffers,
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"DFA Command Buffers");
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if (status)
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return status;
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}
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return 0;
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}
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/**
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* Allocate memory and initialize the FPA pools using memory
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* from cvmx-bootmem. Sizes of each element in the pools is
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* controlled by the cvmx-config.h header file. Specifying
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* zero for any parameter will cause that FPA pool to not be
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* setup. This is useful if you aren't using some of the
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* hardware and want to save memory.
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*
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* @packet_buffers:
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* Number of packet buffers to allocate
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* @work_queue_entries:
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* Number of work queue entries
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* @pko_buffers:
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* PKO Command buffers. You should at minimum have two per
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* each PKO queue.
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* @tim_buffers:
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* TIM ring buffer command queues. At least two per timer bucket
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* is recommened.
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* @dfa_buffers:
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* DFA command buffer. A relatively small (32 for example)
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* number should work.
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* Returns Zero on success, non-zero if out of memory
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*/
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int cvmx_helper_initialize_fpa(int packet_buffers, int work_queue_entries,
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int pko_buffers, int tim_buffers,
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int dfa_buffers)
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{
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#ifndef CVMX_FPA_PACKET_POOL
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#define CVMX_FPA_PACKET_POOL -1
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#define CVMX_FPA_PACKET_POOL_SIZE 0
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#endif
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#ifndef CVMX_FPA_WQE_POOL
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#define CVMX_FPA_WQE_POOL -1
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#define CVMX_FPA_WQE_POOL_SIZE 0
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#endif
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#ifndef CVMX_FPA_OUTPUT_BUFFER_POOL
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#define CVMX_FPA_OUTPUT_BUFFER_POOL -1
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#define CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE 0
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#endif
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#ifndef CVMX_FPA_TIMER_POOL
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#define CVMX_FPA_TIMER_POOL -1
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#define CVMX_FPA_TIMER_POOL_SIZE 0
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#endif
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#ifndef CVMX_FPA_DFA_POOL
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#define CVMX_FPA_DFA_POOL -1
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#define CVMX_FPA_DFA_POOL_SIZE 0
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#endif
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return __cvmx_helper_initialize_fpa(CVMX_FPA_PACKET_POOL,
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CVMX_FPA_PACKET_POOL_SIZE,
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packet_buffers, CVMX_FPA_WQE_POOL,
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CVMX_FPA_WQE_POOL_SIZE,
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work_queue_entries,
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CVMX_FPA_OUTPUT_BUFFER_POOL,
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CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE,
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pko_buffers, CVMX_FPA_TIMER_POOL,
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CVMX_FPA_TIMER_POOL_SIZE,
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tim_buffers, CVMX_FPA_DFA_POOL,
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CVMX_FPA_DFA_POOL_SIZE,
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dfa_buffers);
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}
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