diff options
Diffstat (limited to 'drivers/staging/octeon/cvmx-pko.c')
| -rw-r--r-- | drivers/staging/octeon/cvmx-pko.c | 506 |
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 50a2c9bd5a5..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 command 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; -} |