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296 lines
9.7 KiB
296 lines
9.7 KiB
/* |
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* Copyright (c) 2003-2012 Broadcom Corporation |
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* All Rights Reserved |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the Broadcom |
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* license below: |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <asm/cpu-info.h> |
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#include <linux/irq.h> |
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#include <linux/interrupt.h> |
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#include <asm/cpu.h> |
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#include <asm/mipsregs.h> |
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#include <asm/netlogic/xlr/fmn.h> |
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#include <asm/netlogic/xlr/xlr.h> |
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#include <asm/netlogic/common.h> |
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#include <asm/netlogic/haldefs.h> |
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struct xlr_board_fmn_config xlr_board_fmn_config; |
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static void __maybe_unused print_credit_config(struct xlr_fmn_info *fmn_info) |
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{ |
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int bkt; |
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pr_info("Bucket size :\n"); |
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pr_info("Station\t: Size\n"); |
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for (bkt = 0; bkt < 16; bkt++) |
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pr_info(" %d %d %d %d %d %d %d %d\n", |
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xlr_board_fmn_config.bucket_size[(bkt * 8) + 0], |
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xlr_board_fmn_config.bucket_size[(bkt * 8) + 1], |
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xlr_board_fmn_config.bucket_size[(bkt * 8) + 2], |
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xlr_board_fmn_config.bucket_size[(bkt * 8) + 3], |
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xlr_board_fmn_config.bucket_size[(bkt * 8) + 4], |
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xlr_board_fmn_config.bucket_size[(bkt * 8) + 5], |
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xlr_board_fmn_config.bucket_size[(bkt * 8) + 6], |
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xlr_board_fmn_config.bucket_size[(bkt * 8) + 7]); |
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pr_info("\n"); |
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pr_info("Credits distribution :\n"); |
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pr_info("Station\t: Size\n"); |
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for (bkt = 0; bkt < 16; bkt++) |
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pr_info(" %d %d %d %d %d %d %d %d\n", |
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fmn_info->credit_config[(bkt * 8) + 0], |
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fmn_info->credit_config[(bkt * 8) + 1], |
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fmn_info->credit_config[(bkt * 8) + 2], |
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fmn_info->credit_config[(bkt * 8) + 3], |
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fmn_info->credit_config[(bkt * 8) + 4], |
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fmn_info->credit_config[(bkt * 8) + 5], |
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fmn_info->credit_config[(bkt * 8) + 6], |
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fmn_info->credit_config[(bkt * 8) + 7]); |
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pr_info("\n"); |
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} |
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static void check_credit_distribution(void) |
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{ |
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struct xlr_board_fmn_config *cfg = &xlr_board_fmn_config; |
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int bkt, n, total_credits, ncores; |
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ncores = hweight32(nlm_current_node()->coremask); |
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for (bkt = 0; bkt < 128; bkt++) { |
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total_credits = 0; |
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for (n = 0; n < ncores; n++) |
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total_credits += cfg->cpu[n].credit_config[bkt]; |
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total_credits += cfg->gmac[0].credit_config[bkt]; |
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total_credits += cfg->gmac[1].credit_config[bkt]; |
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total_credits += cfg->dma.credit_config[bkt]; |
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total_credits += cfg->cmp.credit_config[bkt]; |
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total_credits += cfg->sae.credit_config[bkt]; |
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total_credits += cfg->xgmac[0].credit_config[bkt]; |
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total_credits += cfg->xgmac[1].credit_config[bkt]; |
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if (total_credits > cfg->bucket_size[bkt]) |
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pr_err("ERROR: Bucket %d: credits (%d) > size (%d)\n", |
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bkt, total_credits, cfg->bucket_size[bkt]); |
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} |
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pr_info("Credit distribution complete.\n"); |
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} |
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/** |
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* setup_fmn_cc - Configure bucket size and credits for a device. |
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* @dev_info: FMN information structure for each devices |
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* @start_stn_id: Starting station id of dev_info |
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* @end_stn_id: End station id of dev_info |
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* @num_buckets: Total number of buckets for den_info |
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* @cpu_credits: Allowed credits to cpu for each devices pointing by dev_info |
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* @size: Size of the each buckets in the device station |
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* |
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* 'size' is the size of the buckets for the device. This size is |
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* distributed among all the CPUs |
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* so that all of them can send messages to the device. |
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* |
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* The device is also given 'cpu_credits' to send messages to the CPUs |
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*/ |
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static void setup_fmn_cc(struct xlr_fmn_info *dev_info, int start_stn_id, |
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int end_stn_id, int num_buckets, int cpu_credits, int size) |
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{ |
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int i, j, num_core, n, credits_per_cpu; |
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struct xlr_fmn_info *cpu = xlr_board_fmn_config.cpu; |
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num_core = hweight32(nlm_current_node()->coremask); |
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dev_info->num_buckets = num_buckets; |
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dev_info->start_stn_id = start_stn_id; |
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dev_info->end_stn_id = end_stn_id; |
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n = num_core; |
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if (num_core == 3) |
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n = 4; |
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for (i = start_stn_id; i <= end_stn_id; i++) { |
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xlr_board_fmn_config.bucket_size[i] = size; |
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/* Dividing device credits equally to cpus */ |
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credits_per_cpu = size / n; |
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for (j = 0; j < num_core; j++) |
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cpu[j].credit_config[i] = credits_per_cpu; |
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/* credits left to distribute */ |
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credits_per_cpu = size - (credits_per_cpu * num_core); |
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/* distribute the remaining credits (if any), among cores */ |
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for (j = 0; (j < num_core) && (credits_per_cpu >= 4); j++) { |
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cpu[j].credit_config[i] += 4; |
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credits_per_cpu -= 4; |
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} |
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} |
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/* Distributing cpu per bucket credits to devices */ |
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for (i = 0; i < num_core; i++) { |
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for (j = 0; j < FMN_CORE_NBUCKETS; j++) |
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dev_info->credit_config[(i * 8) + j] = cpu_credits; |
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} |
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} |
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/* |
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* Each core has 256 slots and 8 buckets, |
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* Configure the 8 buckets each with 32 slots |
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*/ |
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static void setup_cpu_fmninfo(struct xlr_fmn_info *cpu, int num_core) |
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{ |
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int i, j; |
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for (i = 0; i < num_core; i++) { |
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cpu[i].start_stn_id = (8 * i); |
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cpu[i].end_stn_id = (8 * i + 8); |
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for (j = cpu[i].start_stn_id; j < cpu[i].end_stn_id; j++) |
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xlr_board_fmn_config.bucket_size[j] = 32; |
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} |
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} |
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/** |
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* xlr_board_info_setup - Setup FMN details |
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* |
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* Setup the FMN details for each devices according to the device available |
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* in each variant of XLR/XLS processor |
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*/ |
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void xlr_board_info_setup(void) |
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{ |
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struct xlr_fmn_info *cpu = xlr_board_fmn_config.cpu; |
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struct xlr_fmn_info *gmac = xlr_board_fmn_config.gmac; |
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struct xlr_fmn_info *xgmac = xlr_board_fmn_config.xgmac; |
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struct xlr_fmn_info *dma = &xlr_board_fmn_config.dma; |
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struct xlr_fmn_info *cmp = &xlr_board_fmn_config.cmp; |
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struct xlr_fmn_info *sae = &xlr_board_fmn_config.sae; |
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int processor_id, num_core; |
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num_core = hweight32(nlm_current_node()->coremask); |
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processor_id = read_c0_prid() & PRID_IMP_MASK; |
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setup_cpu_fmninfo(cpu, num_core); |
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switch (processor_id) { |
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case PRID_IMP_NETLOGIC_XLS104: |
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case PRID_IMP_NETLOGIC_XLS108: |
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setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
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FMN_STNID_GMAC0_TX3, 8, 16, 32); |
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setup_fmn_cc(dma, FMN_STNID_DMA_0, |
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FMN_STNID_DMA_3, 4, 8, 64); |
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setup_fmn_cc(sae, FMN_STNID_SEC0, |
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FMN_STNID_SEC1, 2, 8, 128); |
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break; |
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case PRID_IMP_NETLOGIC_XLS204: |
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case PRID_IMP_NETLOGIC_XLS208: |
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setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
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FMN_STNID_GMAC0_TX3, 8, 16, 32); |
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setup_fmn_cc(dma, FMN_STNID_DMA_0, |
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FMN_STNID_DMA_3, 4, 8, 64); |
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setup_fmn_cc(sae, FMN_STNID_SEC0, |
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FMN_STNID_SEC1, 2, 8, 128); |
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break; |
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case PRID_IMP_NETLOGIC_XLS404: |
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case PRID_IMP_NETLOGIC_XLS408: |
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case PRID_IMP_NETLOGIC_XLS404B: |
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case PRID_IMP_NETLOGIC_XLS408B: |
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case PRID_IMP_NETLOGIC_XLS416B: |
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case PRID_IMP_NETLOGIC_XLS608B: |
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case PRID_IMP_NETLOGIC_XLS616B: |
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setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
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FMN_STNID_GMAC0_TX3, 8, 8, 32); |
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setup_fmn_cc(&gmac[1], FMN_STNID_GMAC1_FR_0, |
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FMN_STNID_GMAC1_TX3, 8, 8, 32); |
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setup_fmn_cc(dma, FMN_STNID_DMA_0, |
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FMN_STNID_DMA_3, 4, 4, 64); |
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setup_fmn_cc(cmp, FMN_STNID_CMP_0, |
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FMN_STNID_CMP_3, 4, 4, 64); |
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setup_fmn_cc(sae, FMN_STNID_SEC0, |
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FMN_STNID_SEC1, 2, 8, 128); |
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break; |
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case PRID_IMP_NETLOGIC_XLS412B: |
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setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
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FMN_STNID_GMAC0_TX3, 8, 8, 32); |
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setup_fmn_cc(&gmac[1], FMN_STNID_GMAC1_FR_0, |
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FMN_STNID_GMAC1_TX3, 8, 8, 32); |
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setup_fmn_cc(dma, FMN_STNID_DMA_0, |
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FMN_STNID_DMA_3, 4, 4, 64); |
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setup_fmn_cc(cmp, FMN_STNID_CMP_0, |
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FMN_STNID_CMP_3, 4, 4, 64); |
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setup_fmn_cc(sae, FMN_STNID_SEC0, |
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FMN_STNID_SEC1, 2, 8, 128); |
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break; |
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case PRID_IMP_NETLOGIC_XLR308: |
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case PRID_IMP_NETLOGIC_XLR308C: |
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setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
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FMN_STNID_GMAC0_TX3, 8, 16, 32); |
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setup_fmn_cc(dma, FMN_STNID_DMA_0, |
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FMN_STNID_DMA_3, 4, 8, 64); |
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setup_fmn_cc(sae, FMN_STNID_SEC0, |
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FMN_STNID_SEC1, 2, 4, 128); |
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break; |
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case PRID_IMP_NETLOGIC_XLR532: |
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case PRID_IMP_NETLOGIC_XLR532C: |
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case PRID_IMP_NETLOGIC_XLR516C: |
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case PRID_IMP_NETLOGIC_XLR508C: |
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setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
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FMN_STNID_GMAC0_TX3, 8, 16, 32); |
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setup_fmn_cc(dma, FMN_STNID_DMA_0, |
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FMN_STNID_DMA_3, 4, 8, 64); |
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setup_fmn_cc(sae, FMN_STNID_SEC0, |
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FMN_STNID_SEC1, 2, 4, 128); |
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break; |
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case PRID_IMP_NETLOGIC_XLR732: |
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case PRID_IMP_NETLOGIC_XLR716: |
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setup_fmn_cc(&xgmac[0], FMN_STNID_XMAC0_00_TX, |
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FMN_STNID_XMAC0_15_TX, 8, 0, 32); |
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setup_fmn_cc(&xgmac[1], FMN_STNID_XMAC1_00_TX, |
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FMN_STNID_XMAC1_15_TX, 8, 0, 32); |
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setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
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FMN_STNID_GMAC0_TX3, 8, 24, 32); |
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setup_fmn_cc(dma, FMN_STNID_DMA_0, |
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FMN_STNID_DMA_3, 4, 4, 64); |
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setup_fmn_cc(sae, FMN_STNID_SEC0, |
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FMN_STNID_SEC1, 2, 4, 128); |
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break; |
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default: |
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pr_err("Unknown CPU with processor ID [%d]\n", processor_id); |
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pr_err("Error: Cannot initialize FMN credits.\n"); |
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} |
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check_credit_distribution(); |
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#if 0 /* debug */ |
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print_credit_config(&cpu[0]); |
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print_credit_config(&gmac[0]); |
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#endif |
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}
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