Ganesan Ramalingam | ed21cfe | 2012-10-31 12:01:42 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2003-2012 Broadcom Corporation |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * This software is available to you under a choice of one of two |
| 6 | * licenses. You may choose to be licensed under the terms of the GNU |
| 7 | * General Public License (GPL) Version 2, available from the file |
| 8 | * COPYING in the main directory of this source tree, or the Broadcom |
| 9 | * license below: |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * |
| 15 | * 1. Redistributions of source code must retain the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer. |
| 17 | * 2. Redistributions in binary form must reproduce the above copyright |
| 18 | * notice, this list of conditions and the following disclaimer in |
| 19 | * the documentation and/or other materials provided with the |
| 20 | * distribution. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR |
| 23 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 24 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 29 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 30 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 31 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 32 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #include <asm/cpu-info.h> |
| 36 | #include <linux/irq.h> |
| 37 | #include <linux/interrupt.h> |
| 38 | |
Maciej W. Rozycki | 8ff374b | 2013-09-17 16:58:10 +0100 | [diff] [blame] | 39 | #include <asm/cpu.h> |
Ganesan Ramalingam | ed21cfe | 2012-10-31 12:01:42 +0000 | [diff] [blame] | 40 | #include <asm/mipsregs.h> |
| 41 | #include <asm/netlogic/xlr/fmn.h> |
| 42 | #include <asm/netlogic/xlr/xlr.h> |
| 43 | #include <asm/netlogic/common.h> |
| 44 | #include <asm/netlogic/haldefs.h> |
| 45 | |
| 46 | struct xlr_board_fmn_config xlr_board_fmn_config; |
| 47 | |
| 48 | static void __maybe_unused print_credit_config(struct xlr_fmn_info *fmn_info) |
| 49 | { |
| 50 | int bkt; |
| 51 | |
| 52 | pr_info("Bucket size :\n"); |
| 53 | pr_info("Station\t: Size\n"); |
| 54 | for (bkt = 0; bkt < 16; bkt++) |
| 55 | pr_info(" %d %d %d %d %d %d %d %d\n", |
| 56 | xlr_board_fmn_config.bucket_size[(bkt * 8) + 0], |
| 57 | xlr_board_fmn_config.bucket_size[(bkt * 8) + 1], |
| 58 | xlr_board_fmn_config.bucket_size[(bkt * 8) + 2], |
| 59 | xlr_board_fmn_config.bucket_size[(bkt * 8) + 3], |
| 60 | xlr_board_fmn_config.bucket_size[(bkt * 8) + 4], |
| 61 | xlr_board_fmn_config.bucket_size[(bkt * 8) + 5], |
| 62 | xlr_board_fmn_config.bucket_size[(bkt * 8) + 6], |
| 63 | xlr_board_fmn_config.bucket_size[(bkt * 8) + 7]); |
| 64 | pr_info("\n"); |
| 65 | |
| 66 | pr_info("Credits distribution :\n"); |
| 67 | pr_info("Station\t: Size\n"); |
| 68 | for (bkt = 0; bkt < 16; bkt++) |
| 69 | pr_info(" %d %d %d %d %d %d %d %d\n", |
| 70 | fmn_info->credit_config[(bkt * 8) + 0], |
| 71 | fmn_info->credit_config[(bkt * 8) + 1], |
| 72 | fmn_info->credit_config[(bkt * 8) + 2], |
| 73 | fmn_info->credit_config[(bkt * 8) + 3], |
| 74 | fmn_info->credit_config[(bkt * 8) + 4], |
| 75 | fmn_info->credit_config[(bkt * 8) + 5], |
| 76 | fmn_info->credit_config[(bkt * 8) + 6], |
| 77 | fmn_info->credit_config[(bkt * 8) + 7]); |
| 78 | pr_info("\n"); |
| 79 | } |
| 80 | |
| 81 | static void check_credit_distribution(void) |
| 82 | { |
| 83 | struct xlr_board_fmn_config *cfg = &xlr_board_fmn_config; |
| 84 | int bkt, n, total_credits, ncores; |
| 85 | |
| 86 | ncores = hweight32(nlm_current_node()->coremask); |
| 87 | for (bkt = 0; bkt < 128; bkt++) { |
| 88 | total_credits = 0; |
| 89 | for (n = 0; n < ncores; n++) |
| 90 | total_credits += cfg->cpu[n].credit_config[bkt]; |
| 91 | total_credits += cfg->gmac[0].credit_config[bkt]; |
| 92 | total_credits += cfg->gmac[1].credit_config[bkt]; |
| 93 | total_credits += cfg->dma.credit_config[bkt]; |
| 94 | total_credits += cfg->cmp.credit_config[bkt]; |
| 95 | total_credits += cfg->sae.credit_config[bkt]; |
| 96 | total_credits += cfg->xgmac[0].credit_config[bkt]; |
| 97 | total_credits += cfg->xgmac[1].credit_config[bkt]; |
| 98 | if (total_credits > cfg->bucket_size[bkt]) |
| 99 | pr_err("ERROR: Bucket %d: credits (%d) > size (%d)\n", |
| 100 | bkt, total_credits, cfg->bucket_size[bkt]); |
| 101 | } |
| 102 | pr_info("Credit distribution complete.\n"); |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Configure bucket size and credits for a device. 'size' is the size of |
| 107 | * the buckets for the device. This size is distributed among all the CPUs |
| 108 | * so that all of them can send messages to the device. |
| 109 | * |
| 110 | * The device is also given 'cpu_credits' to send messages to the CPUs |
| 111 | * |
| 112 | * @dev_info: FMN information structure for each devices |
| 113 | * @start_stn_id: Starting station id of dev_info |
| 114 | * @end_stn_id: End station id of dev_info |
| 115 | * @num_buckets: Total number of buckets for den_info |
| 116 | * @cpu_credits: Allowed credits to cpu for each devices pointing by dev_info |
| 117 | * @size: Size of the each buckets in the device station |
| 118 | */ |
| 119 | static void setup_fmn_cc(struct xlr_fmn_info *dev_info, int start_stn_id, |
| 120 | int end_stn_id, int num_buckets, int cpu_credits, int size) |
| 121 | { |
| 122 | int i, j, num_core, n, credits_per_cpu; |
| 123 | struct xlr_fmn_info *cpu = xlr_board_fmn_config.cpu; |
| 124 | |
| 125 | num_core = hweight32(nlm_current_node()->coremask); |
| 126 | dev_info->num_buckets = num_buckets; |
| 127 | dev_info->start_stn_id = start_stn_id; |
| 128 | dev_info->end_stn_id = end_stn_id; |
| 129 | |
| 130 | n = num_core; |
| 131 | if (num_core == 3) |
| 132 | n = 4; |
| 133 | |
| 134 | for (i = start_stn_id; i <= end_stn_id; i++) { |
| 135 | xlr_board_fmn_config.bucket_size[i] = size; |
| 136 | |
| 137 | /* Dividing device credits equally to cpus */ |
| 138 | credits_per_cpu = size / n; |
| 139 | for (j = 0; j < num_core; j++) |
| 140 | cpu[j].credit_config[i] = credits_per_cpu; |
| 141 | |
| 142 | /* credits left to distribute */ |
| 143 | credits_per_cpu = size - (credits_per_cpu * num_core); |
| 144 | |
| 145 | /* distribute the remaining credits (if any), among cores */ |
| 146 | for (j = 0; (j < num_core) && (credits_per_cpu >= 4); j++) { |
| 147 | cpu[j].credit_config[i] += 4; |
| 148 | credits_per_cpu -= 4; |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | /* Distributing cpu per bucket credits to devices */ |
| 153 | for (i = 0; i < num_core; i++) { |
| 154 | for (j = 0; j < FMN_CORE_NBUCKETS; j++) |
| 155 | dev_info->credit_config[(i * 8) + j] = cpu_credits; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | /* |
| 160 | * Each core has 256 slots and 8 buckets, |
| 161 | * Configure the 8 buckets each with 32 slots |
| 162 | */ |
| 163 | static void setup_cpu_fmninfo(struct xlr_fmn_info *cpu, int num_core) |
| 164 | { |
| 165 | int i, j; |
| 166 | |
| 167 | for (i = 0; i < num_core; i++) { |
Ralf Baechle | 7034228 | 2013-01-22 12:59:30 +0100 | [diff] [blame] | 168 | cpu[i].start_stn_id = (8 * i); |
| 169 | cpu[i].end_stn_id = (8 * i + 8); |
Ganesan Ramalingam | ed21cfe | 2012-10-31 12:01:42 +0000 | [diff] [blame] | 170 | |
| 171 | for (j = cpu[i].start_stn_id; j < cpu[i].end_stn_id; j++) |
| 172 | xlr_board_fmn_config.bucket_size[j] = 32; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Setup the FMN details for each devices according to the device available |
| 178 | * in each variant of XLR/XLS processor |
| 179 | */ |
| 180 | void xlr_board_info_setup(void) |
| 181 | { |
| 182 | struct xlr_fmn_info *cpu = xlr_board_fmn_config.cpu; |
| 183 | struct xlr_fmn_info *gmac = xlr_board_fmn_config.gmac; |
| 184 | struct xlr_fmn_info *xgmac = xlr_board_fmn_config.xgmac; |
| 185 | struct xlr_fmn_info *dma = &xlr_board_fmn_config.dma; |
| 186 | struct xlr_fmn_info *cmp = &xlr_board_fmn_config.cmp; |
| 187 | struct xlr_fmn_info *sae = &xlr_board_fmn_config.sae; |
| 188 | int processor_id, num_core; |
| 189 | |
| 190 | num_core = hweight32(nlm_current_node()->coremask); |
Maciej W. Rozycki | 8ff374b | 2013-09-17 16:58:10 +0100 | [diff] [blame] | 191 | processor_id = read_c0_prid() & PRID_IMP_MASK; |
Ganesan Ramalingam | ed21cfe | 2012-10-31 12:01:42 +0000 | [diff] [blame] | 192 | |
| 193 | setup_cpu_fmninfo(cpu, num_core); |
| 194 | switch (processor_id) { |
| 195 | case PRID_IMP_NETLOGIC_XLS104: |
| 196 | case PRID_IMP_NETLOGIC_XLS108: |
| 197 | setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
| 198 | FMN_STNID_GMAC0_TX3, 8, 16, 32); |
| 199 | setup_fmn_cc(dma, FMN_STNID_DMA_0, |
| 200 | FMN_STNID_DMA_3, 4, 8, 64); |
| 201 | setup_fmn_cc(sae, FMN_STNID_SEC0, |
| 202 | FMN_STNID_SEC1, 2, 8, 128); |
| 203 | break; |
| 204 | |
| 205 | case PRID_IMP_NETLOGIC_XLS204: |
| 206 | case PRID_IMP_NETLOGIC_XLS208: |
| 207 | setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
| 208 | FMN_STNID_GMAC0_TX3, 8, 16, 32); |
| 209 | setup_fmn_cc(dma, FMN_STNID_DMA_0, |
| 210 | FMN_STNID_DMA_3, 4, 8, 64); |
| 211 | setup_fmn_cc(sae, FMN_STNID_SEC0, |
| 212 | FMN_STNID_SEC1, 2, 8, 128); |
| 213 | break; |
| 214 | |
| 215 | case PRID_IMP_NETLOGIC_XLS404: |
| 216 | case PRID_IMP_NETLOGIC_XLS408: |
| 217 | case PRID_IMP_NETLOGIC_XLS404B: |
| 218 | case PRID_IMP_NETLOGIC_XLS408B: |
| 219 | case PRID_IMP_NETLOGIC_XLS416B: |
Jayachandran C | f0cb40e | 2013-01-14 15:11:53 +0000 | [diff] [blame] | 220 | case PRID_IMP_NETLOGIC_XLS608B: |
| 221 | case PRID_IMP_NETLOGIC_XLS616B: |
Ganesan Ramalingam | ed21cfe | 2012-10-31 12:01:42 +0000 | [diff] [blame] | 222 | setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
| 223 | FMN_STNID_GMAC0_TX3, 8, 8, 32); |
| 224 | setup_fmn_cc(&gmac[1], FMN_STNID_GMAC1_FR_0, |
| 225 | FMN_STNID_GMAC1_TX3, 8, 8, 32); |
| 226 | setup_fmn_cc(dma, FMN_STNID_DMA_0, |
| 227 | FMN_STNID_DMA_3, 4, 4, 64); |
| 228 | setup_fmn_cc(cmp, FMN_STNID_CMP_0, |
| 229 | FMN_STNID_CMP_3, 4, 4, 64); |
| 230 | setup_fmn_cc(sae, FMN_STNID_SEC0, |
| 231 | FMN_STNID_SEC1, 2, 8, 128); |
| 232 | break; |
| 233 | |
| 234 | case PRID_IMP_NETLOGIC_XLS412B: |
| 235 | setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
| 236 | FMN_STNID_GMAC0_TX3, 8, 8, 32); |
| 237 | setup_fmn_cc(&gmac[1], FMN_STNID_GMAC1_FR_0, |
| 238 | FMN_STNID_GMAC1_TX3, 8, 8, 32); |
| 239 | setup_fmn_cc(dma, FMN_STNID_DMA_0, |
| 240 | FMN_STNID_DMA_3, 4, 4, 64); |
| 241 | setup_fmn_cc(cmp, FMN_STNID_CMP_0, |
| 242 | FMN_STNID_CMP_3, 4, 4, 64); |
| 243 | setup_fmn_cc(sae, FMN_STNID_SEC0, |
| 244 | FMN_STNID_SEC1, 2, 8, 128); |
| 245 | break; |
| 246 | |
| 247 | case PRID_IMP_NETLOGIC_XLR308: |
| 248 | case PRID_IMP_NETLOGIC_XLR308C: |
| 249 | setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
| 250 | FMN_STNID_GMAC0_TX3, 8, 16, 32); |
| 251 | setup_fmn_cc(dma, FMN_STNID_DMA_0, |
| 252 | FMN_STNID_DMA_3, 4, 8, 64); |
| 253 | setup_fmn_cc(sae, FMN_STNID_SEC0, |
| 254 | FMN_STNID_SEC1, 2, 4, 128); |
| 255 | break; |
| 256 | |
| 257 | case PRID_IMP_NETLOGIC_XLR532: |
| 258 | case PRID_IMP_NETLOGIC_XLR532C: |
| 259 | case PRID_IMP_NETLOGIC_XLR516C: |
| 260 | case PRID_IMP_NETLOGIC_XLR508C: |
| 261 | setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
| 262 | FMN_STNID_GMAC0_TX3, 8, 16, 32); |
| 263 | setup_fmn_cc(dma, FMN_STNID_DMA_0, |
| 264 | FMN_STNID_DMA_3, 4, 8, 64); |
| 265 | setup_fmn_cc(sae, FMN_STNID_SEC0, |
| 266 | FMN_STNID_SEC1, 2, 4, 128); |
| 267 | break; |
| 268 | |
| 269 | case PRID_IMP_NETLOGIC_XLR732: |
| 270 | case PRID_IMP_NETLOGIC_XLR716: |
| 271 | setup_fmn_cc(&xgmac[0], FMN_STNID_XMAC0_00_TX, |
| 272 | FMN_STNID_XMAC0_15_TX, 8, 0, 32); |
| 273 | setup_fmn_cc(&xgmac[1], FMN_STNID_XMAC1_00_TX, |
| 274 | FMN_STNID_XMAC1_15_TX, 8, 0, 32); |
| 275 | setup_fmn_cc(&gmac[0], FMN_STNID_GMAC0, |
| 276 | FMN_STNID_GMAC0_TX3, 8, 24, 32); |
| 277 | setup_fmn_cc(dma, FMN_STNID_DMA_0, |
| 278 | FMN_STNID_DMA_3, 4, 4, 64); |
| 279 | setup_fmn_cc(sae, FMN_STNID_SEC0, |
| 280 | FMN_STNID_SEC1, 2, 4, 128); |
| 281 | break; |
| 282 | default: |
| 283 | pr_err("Unknown CPU with processor ID [%d]\n", processor_id); |
| 284 | pr_err("Error: Cannot initialize FMN credits.\n"); |
| 285 | } |
| 286 | |
| 287 | check_credit_distribution(); |
| 288 | |
| 289 | #if 0 /* debug */ |
| 290 | print_credit_config(&cpu[0]); |
| 291 | print_credit_config(&gmac[0]); |
| 292 | #endif |
| 293 | } |