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Diffstat (limited to 'drivers/staging/octeon/cvmx-pko.c')
-rw-r--r--drivers/staging/octeon/cvmx-pko.c506
1 files changed, 0 insertions, 506 deletions
diff --git a/drivers/staging/octeon/cvmx-pko.c b/drivers/staging/octeon/cvmx-pko.c
deleted file mode 100644
index 00db91529b1..00000000000
--- a/drivers/staging/octeon/cvmx-pko.c
+++ /dev/null
@@ -1,506 +0,0 @@
-/***********************license start***************
- * Author: Cavium Networks
- *
- * Contact: support@caviumnetworks.com
- * This file is part of the OCTEON SDK
- *
- * Copyright (c) 2003-2008 Cavium Networks
- *
- * This file is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, Version 2, as
- * published by the Free Software Foundation.
- *
- * This file is distributed in the hope that it will be useful, but
- * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
- * NONINFRINGEMENT. See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this file; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- * or visit http://www.gnu.org/licenses/.
- *
- * This file may also be available under a different license from Cavium.
- * Contact Cavium Networks for more information
- ***********************license end**************************************/
-
-/*
- * Support library for the hardware Packet Output unit.
- */
-
-#include <asm/octeon/octeon.h>
-
-#include "cvmx-config.h"
-#include "cvmx-pko.h"
-#include "cvmx-helper.h"
-
-/**
- * Internal state of packet output
- */
-
-/**
- * Call before any other calls to initialize the packet
- * output system. This does chip global config, and should only be
- * done by one core.
- */
-
-void cvmx_pko_initialize_global(void)
-{
- int i;
- uint64_t priority = 8;
- union cvmx_pko_reg_cmd_buf config;
-
- /*
- * Set the size of the PKO command buffers to an odd number of
- * 64bit words. This allows the normal two word send to stay
- * aligned and never span a comamnd word buffer.
- */
- config.u64 = 0;
- config.s.pool = CVMX_FPA_OUTPUT_BUFFER_POOL;
- config.s.size = CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE / 8 - 1;
-
- cvmx_write_csr(CVMX_PKO_REG_CMD_BUF, config.u64);
-
- for (i = 0; i < CVMX_PKO_MAX_OUTPUT_QUEUES; i++)
- cvmx_pko_config_port(CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID, i, 1,
- &priority);
-
- /*
- * If we aren't using all of the queues optimize PKO's
- * internal memory.
- */
- if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)
- || OCTEON_IS_MODEL(OCTEON_CN56XX)
- || OCTEON_IS_MODEL(OCTEON_CN52XX)) {
- int num_interfaces = cvmx_helper_get_number_of_interfaces();
- int last_port =
- cvmx_helper_get_last_ipd_port(num_interfaces - 1);
- int max_queues =
- cvmx_pko_get_base_queue(last_port) +
- cvmx_pko_get_num_queues(last_port);
- if (OCTEON_IS_MODEL(OCTEON_CN38XX)) {
- if (max_queues <= 32)
- cvmx_write_csr(CVMX_PKO_REG_QUEUE_MODE, 2);
- else if (max_queues <= 64)
- cvmx_write_csr(CVMX_PKO_REG_QUEUE_MODE, 1);
- } else {
- if (max_queues <= 64)
- cvmx_write_csr(CVMX_PKO_REG_QUEUE_MODE, 2);
- else if (max_queues <= 128)
- cvmx_write_csr(CVMX_PKO_REG_QUEUE_MODE, 1);
- }
- }
-}
-
-/**
- * This function does per-core initialization required by the PKO routines.
- * This must be called on all cores that will do packet output, and must
- * be called after the FPA has been initialized and filled with pages.
- *
- * Returns 0 on success
- * !0 on failure
- */
-int cvmx_pko_initialize_local(void)
-{
- /* Nothing to do */
- return 0;
-}
-
-/**
- * Enables the packet output hardware. It must already be
- * configured.
- */
-void cvmx_pko_enable(void)
-{
- union cvmx_pko_reg_flags flags;
-
- flags.u64 = cvmx_read_csr(CVMX_PKO_REG_FLAGS);
- if (flags.s.ena_pko)
- cvmx_dprintf
- ("Warning: Enabling PKO when PKO already enabled.\n");
-
- flags.s.ena_dwb = 1;
- flags.s.ena_pko = 1;
- /*
- * always enable big endian for 3-word command. Does nothing
- * for 2-word.
- */
- flags.s.store_be = 1;
- cvmx_write_csr(CVMX_PKO_REG_FLAGS, flags.u64);
-}
-
-/**
- * Disables the packet output. Does not affect any configuration.
- */
-void cvmx_pko_disable(void)
-{
- union cvmx_pko_reg_flags pko_reg_flags;
- pko_reg_flags.u64 = cvmx_read_csr(CVMX_PKO_REG_FLAGS);
- pko_reg_flags.s.ena_pko = 0;
- cvmx_write_csr(CVMX_PKO_REG_FLAGS, pko_reg_flags.u64);
-}
-
-
-/**
- * Reset the packet output.
- */
-static void __cvmx_pko_reset(void)
-{
- union cvmx_pko_reg_flags pko_reg_flags;
- pko_reg_flags.u64 = cvmx_read_csr(CVMX_PKO_REG_FLAGS);
- pko_reg_flags.s.reset = 1;
- cvmx_write_csr(CVMX_PKO_REG_FLAGS, pko_reg_flags.u64);
-}
-
-/**
- * Shutdown and free resources required by packet output.
- */
-void cvmx_pko_shutdown(void)
-{
- union cvmx_pko_mem_queue_ptrs config;
- int queue;
-
- cvmx_pko_disable();
-
- for (queue = 0; queue < CVMX_PKO_MAX_OUTPUT_QUEUES; queue++) {
- config.u64 = 0;
- config.s.tail = 1;
- config.s.index = 0;
- config.s.port = CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID;
- config.s.queue = queue & 0x7f;
- config.s.qos_mask = 0;
- config.s.buf_ptr = 0;
- if (!OCTEON_IS_MODEL(OCTEON_CN3XXX)) {
- union cvmx_pko_reg_queue_ptrs1 config1;
- config1.u64 = 0;
- config1.s.qid7 = queue >> 7;
- cvmx_write_csr(CVMX_PKO_REG_QUEUE_PTRS1, config1.u64);
- }
- cvmx_write_csr(CVMX_PKO_MEM_QUEUE_PTRS, config.u64);
- cvmx_cmd_queue_shutdown(CVMX_CMD_QUEUE_PKO(queue));
- }
- __cvmx_pko_reset();
-}
-
-/**
- * Configure a output port and the associated queues for use.
- *
- * @port: Port to configure.
- * @base_queue: First queue number to associate with this port.
- * @num_queues: Number of queues to associate with this port
- * @priority: Array of priority levels for each queue. Values are
- * allowed to be 0-8. A value of 8 get 8 times the traffic
- * of a value of 1. A value of 0 indicates that no rounds
- * will be participated in. These priorities can be changed
- * on the fly while the pko is enabled. A priority of 9
- * indicates that static priority should be used. If static
- * priority is used all queues with static priority must be
- * contiguous starting at the base_queue, and lower numbered
- * queues have higher priority than higher numbered queues.
- * There must be num_queues elements in the array.
- */
-cvmx_pko_status_t cvmx_pko_config_port(uint64_t port, uint64_t base_queue,
- uint64_t num_queues,
- const uint64_t priority[])
-{
- cvmx_pko_status_t result_code;
- uint64_t queue;
- union cvmx_pko_mem_queue_ptrs config;
- union cvmx_pko_reg_queue_ptrs1 config1;
- int static_priority_base = -1;
- int static_priority_end = -1;
-
- if ((port >= CVMX_PKO_NUM_OUTPUT_PORTS)
- && (port != CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID)) {
- cvmx_dprintf("ERROR: cvmx_pko_config_port: Invalid port %llu\n",
- (unsigned long long)port);
- return CVMX_PKO_INVALID_PORT;
- }
-
- if (base_queue + num_queues > CVMX_PKO_MAX_OUTPUT_QUEUES) {
- cvmx_dprintf
- ("ERROR: cvmx_pko_config_port: Invalid queue range %llu\n",
- (unsigned long long)(base_queue + num_queues));
- return CVMX_PKO_INVALID_QUEUE;
- }
-
- if (port != CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID) {
- /*
- * Validate the static queue priority setup and set
- * static_priority_base and static_priority_end
- * accordingly.
- */
- for (queue = 0; queue < num_queues; queue++) {
- /* Find first queue of static priority */
- if (static_priority_base == -1
- && priority[queue] ==
- CVMX_PKO_QUEUE_STATIC_PRIORITY)
- static_priority_base = queue;
- /* Find last queue of static priority */
- if (static_priority_base != -1
- && static_priority_end == -1
- && priority[queue] != CVMX_PKO_QUEUE_STATIC_PRIORITY
- && queue)
- static_priority_end = queue - 1;
- else if (static_priority_base != -1
- && static_priority_end == -1
- && queue == num_queues - 1)
- /* all queues are static priority */
- static_priority_end = queue;
- /*
- * Check to make sure all static priority
- * queues are contiguous. Also catches some
- * cases of static priorites not starting at
- * queue 0.
- */
- if (static_priority_end != -1
- && (int)queue > static_priority_end
- && priority[queue] ==
- CVMX_PKO_QUEUE_STATIC_PRIORITY) {
- cvmx_dprintf("ERROR: cvmx_pko_config_port: "
- "Static priority queues aren't "
- "contiguous or don't start at "
- "base queue. q: %d, eq: %d\n",
- (int)queue, static_priority_end);
- return CVMX_PKO_INVALID_PRIORITY;
- }
- }
- if (static_priority_base > 0) {
- cvmx_dprintf("ERROR: cvmx_pko_config_port: Static "
- "priority queues don't start at base "
- "queue. sq: %d\n",
- static_priority_base);
- return CVMX_PKO_INVALID_PRIORITY;
- }
-#if 0
- cvmx_dprintf("Port %d: Static priority queue base: %d, "
- "end: %d\n", port,
- static_priority_base, static_priority_end);
-#endif
- }
- /*
- * At this point, static_priority_base and static_priority_end
- * are either both -1, or are valid start/end queue
- * numbers.
- */
-
- result_code = CVMX_PKO_SUCCESS;
-
-#ifdef PKO_DEBUG
- cvmx_dprintf("num queues: %d (%lld,%lld)\n", num_queues,
- CVMX_PKO_QUEUES_PER_PORT_INTERFACE0,
- CVMX_PKO_QUEUES_PER_PORT_INTERFACE1);
-#endif
-
- for (queue = 0; queue < num_queues; queue++) {
- uint64_t *buf_ptr = NULL;
-
- config1.u64 = 0;
- config1.s.idx3 = queue >> 3;
- config1.s.qid7 = (base_queue + queue) >> 7;
-
- config.u64 = 0;
- config.s.tail = queue == (num_queues - 1);
- config.s.index = queue;
- config.s.port = port;
- config.s.queue = base_queue + queue;
-
- if (!cvmx_octeon_is_pass1()) {
- config.s.static_p = static_priority_base >= 0;
- config.s.static_q = (int)queue <= static_priority_end;
- config.s.s_tail = (int)queue == static_priority_end;
- }
- /*
- * Convert the priority into an enable bit field. Try
- * to space the bits out evenly so the packet don't
- * get grouped up
- */
- switch ((int)priority[queue]) {
- case 0:
- config.s.qos_mask = 0x00;
- break;
- case 1:
- config.s.qos_mask = 0x01;
- break;
- case 2:
- config.s.qos_mask = 0x11;
- break;
- case 3:
- config.s.qos_mask = 0x49;
- break;
- case 4:
- config.s.qos_mask = 0x55;
- break;
- case 5:
- config.s.qos_mask = 0x57;
- break;
- case 6:
- config.s.qos_mask = 0x77;
- break;
- case 7:
- config.s.qos_mask = 0x7f;
- break;
- case 8:
- config.s.qos_mask = 0xff;
- break;
- case CVMX_PKO_QUEUE_STATIC_PRIORITY:
- /* Pass 1 will fall through to the error case */
- if (!cvmx_octeon_is_pass1()) {
- config.s.qos_mask = 0xff;
- break;
- }
- default:
- cvmx_dprintf("ERROR: cvmx_pko_config_port: Invalid "
- "priority %llu\n",
- (unsigned long long)priority[queue]);
- config.s.qos_mask = 0xff;
- result_code = CVMX_PKO_INVALID_PRIORITY;
- break;
- }
-
- if (port != CVMX_PKO_MEM_QUEUE_PTRS_ILLEGAL_PID) {
- cvmx_cmd_queue_result_t cmd_res =
- cvmx_cmd_queue_initialize(CVMX_CMD_QUEUE_PKO
- (base_queue + queue),
- CVMX_PKO_MAX_QUEUE_DEPTH,
- CVMX_FPA_OUTPUT_BUFFER_POOL,
- CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE
- -
- CVMX_PKO_COMMAND_BUFFER_SIZE_ADJUST
- * 8);
- if (cmd_res != CVMX_CMD_QUEUE_SUCCESS) {
- switch (cmd_res) {
- case CVMX_CMD_QUEUE_NO_MEMORY:
- cvmx_dprintf("ERROR: "
- "cvmx_pko_config_port: "
- "Unable to allocate "
- "output buffer.\n");
- return CVMX_PKO_NO_MEMORY;
- case CVMX_CMD_QUEUE_ALREADY_SETUP:
- cvmx_dprintf
- ("ERROR: cvmx_pko_config_port: Port already setup.\n");
- return CVMX_PKO_PORT_ALREADY_SETUP;
- case CVMX_CMD_QUEUE_INVALID_PARAM:
- default:
- cvmx_dprintf
- ("ERROR: cvmx_pko_config_port: Command queue initialization failed.\n");
- return CVMX_PKO_CMD_QUEUE_INIT_ERROR;
- }
- }
-
- buf_ptr =
- (uint64_t *)
- cvmx_cmd_queue_buffer(CVMX_CMD_QUEUE_PKO
- (base_queue + queue));
- config.s.buf_ptr = cvmx_ptr_to_phys(buf_ptr);
- } else
- config.s.buf_ptr = 0;
-
- CVMX_SYNCWS;
-
- if (!OCTEON_IS_MODEL(OCTEON_CN3XXX))
- cvmx_write_csr(CVMX_PKO_REG_QUEUE_PTRS1, config1.u64);
- cvmx_write_csr(CVMX_PKO_MEM_QUEUE_PTRS, config.u64);
- }
-
- return result_code;
-}
-
-#ifdef PKO_DEBUG
-/**
- * Show map of ports -> queues for different cores.
- */
-void cvmx_pko_show_queue_map()
-{
- int core, port;
- int pko_output_ports = 36;
-
- cvmx_dprintf("port");
- for (port = 0; port < pko_output_ports; port++)
- cvmx_dprintf("%3d ", port);
- cvmx_dprintf("\n");
-
- for (core = 0; core < CVMX_MAX_CORES; core++) {
- cvmx_dprintf("\n%2d: ", core);
- for (port = 0; port < pko_output_ports; port++) {
- cvmx_dprintf("%3d ",
- cvmx_pko_get_base_queue_per_core(port,
- core));
- }
- }
- cvmx_dprintf("\n");
-}
-#endif
-
-/**
- * Rate limit a PKO port to a max packets/sec. This function is only
- * supported on CN51XX and higher, excluding CN58XX.
- *
- * @port: Port to rate limit
- * @packets_s: Maximum packet/sec
- * @burst: Maximum number of packets to burst in a row before rate
- * limiting cuts in.
- *
- * Returns Zero on success, negative on failure
- */
-int cvmx_pko_rate_limit_packets(int port, int packets_s, int burst)
-{
- union cvmx_pko_mem_port_rate0 pko_mem_port_rate0;
- union cvmx_pko_mem_port_rate1 pko_mem_port_rate1;
-
- pko_mem_port_rate0.u64 = 0;
- pko_mem_port_rate0.s.pid = port;
- pko_mem_port_rate0.s.rate_pkt =
- cvmx_sysinfo_get()->cpu_clock_hz / packets_s / 16;
- /* No cost per word since we are limited by packets/sec, not bits/sec */
- pko_mem_port_rate0.s.rate_word = 0;
-
- pko_mem_port_rate1.u64 = 0;
- pko_mem_port_rate1.s.pid = port;
- pko_mem_port_rate1.s.rate_lim =
- ((uint64_t) pko_mem_port_rate0.s.rate_pkt * burst) >> 8;
-
- cvmx_write_csr(CVMX_PKO_MEM_PORT_RATE0, pko_mem_port_rate0.u64);
- cvmx_write_csr(CVMX_PKO_MEM_PORT_RATE1, pko_mem_port_rate1.u64);
- return 0;
-}
-
-/**
- * Rate limit a PKO port to a max bits/sec. This function is only
- * supported on CN51XX and higher, excluding CN58XX.
- *
- * @port: Port to rate limit
- * @bits_s: PKO rate limit in bits/sec
- * @burst: Maximum number of bits to burst before rate
- * limiting cuts in.
- *
- * Returns Zero on success, negative on failure
- */
-int cvmx_pko_rate_limit_bits(int port, uint64_t bits_s, int burst)
-{
- union cvmx_pko_mem_port_rate0 pko_mem_port_rate0;
- union cvmx_pko_mem_port_rate1 pko_mem_port_rate1;
- uint64_t clock_rate = cvmx_sysinfo_get()->cpu_clock_hz;
- uint64_t tokens_per_bit = clock_rate * 16 / bits_s;
-
- pko_mem_port_rate0.u64 = 0;
- pko_mem_port_rate0.s.pid = port;
- /*
- * Each packet has a 12 bytes of interframe gap, an 8 byte
- * preamble, and a 4 byte CRC. These are not included in the
- * per word count. Multiply by 8 to covert to bits and divide
- * by 256 for limit granularity.
- */
- pko_mem_port_rate0.s.rate_pkt = (12 + 8 + 4) * 8 * tokens_per_bit / 256;
- /* Each 8 byte word has 64bits */
- pko_mem_port_rate0.s.rate_word = 64 * tokens_per_bit;
-
- pko_mem_port_rate1.u64 = 0;
- pko_mem_port_rate1.s.pid = port;
- pko_mem_port_rate1.s.rate_lim = tokens_per_bit * burst / 256;
-
- cvmx_write_csr(CVMX_PKO_MEM_PORT_RATE0, pko_mem_port_rate0.u64);
- cvmx_write_csr(CVMX_PKO_MEM_PORT_RATE1, pko_mem_port_rate1.u64);
- return 0;
-}
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