Michael Bohan | 5a52a64 | 2013-01-18 16:16:03 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
Gagan Mac | b91c407 | 2012-05-09 16:00:31 -0600 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #define pr_fmt(fmt) "AXI: %s(): " fmt, __func__ |
| 15 | |
| 16 | #include "msm_bus_core.h" |
| 17 | #include <mach/msm_bus.h> |
| 18 | #include <mach/msm_bus_board.h> |
| 19 | #include <mach/rpm-smd.h> |
| 20 | |
| 21 | /* Stubs for backward compatibility */ |
| 22 | void msm_bus_rpm_set_mt_mask() |
| 23 | { |
| 24 | } |
| 25 | |
| 26 | bool msm_bus_rpm_is_mem_interleaved(void) |
| 27 | { |
| 28 | return true; |
| 29 | } |
| 30 | |
| 31 | struct commit_data { |
| 32 | struct msm_bus_node_hw_info *mas_arb; |
| 33 | struct msm_bus_node_hw_info *slv_arb; |
| 34 | }; |
| 35 | |
| 36 | #ifdef CONFIG_DEBUG_FS |
| 37 | void msm_bus_rpm_fill_cdata_buffer(int *curr, char *buf, const int max_size, |
| 38 | void *cdata, int nmasters, int nslaves, int ntslaves) |
| 39 | { |
| 40 | int c; |
| 41 | struct commit_data *cd = (struct commit_data *)cdata; |
| 42 | |
| 43 | *curr += scnprintf(buf + *curr, max_size - *curr, "\nMas BW:\n"); |
| 44 | for (c = 0; c < nmasters; c++) |
| 45 | *curr += scnprintf(buf + *curr, max_size - *curr, |
| 46 | "%d: %llu\t", cd->mas_arb[c].hw_id, |
| 47 | cd->mas_arb[c].bw); |
| 48 | *curr += scnprintf(buf + *curr, max_size - *curr, "\nSlave BW:\n"); |
| 49 | for (c = 0; c < nslaves; c++) { |
| 50 | *curr += scnprintf(buf + *curr, max_size - *curr, |
| 51 | "%d: %llu\t", cd->slv_arb[c].hw_id, |
| 52 | cd->slv_arb[c].bw); |
| 53 | } |
| 54 | } |
| 55 | #endif |
| 56 | |
| 57 | static int msm_bus_rpm_compare_cdata( |
| 58 | struct msm_bus_fabric_registration *fab_pdata, |
| 59 | struct commit_data *cd1, struct commit_data *cd2) |
| 60 | { |
| 61 | size_t n; |
| 62 | int ret; |
| 63 | |
| 64 | n = sizeof(struct msm_bus_node_hw_info) * fab_pdata->nmasters * 2; |
| 65 | ret = memcmp(cd1->mas_arb, cd2->mas_arb, n); |
| 66 | if (ret) { |
| 67 | MSM_BUS_DBG("Master Arb Data not equal\n"); |
| 68 | return ret; |
| 69 | } |
| 70 | |
| 71 | n = sizeof(struct msm_bus_node_hw_info) * fab_pdata->nslaves * 2; |
| 72 | ret = memcmp(cd1->slv_arb, cd2->slv_arb, n); |
| 73 | if (ret) { |
| 74 | MSM_BUS_DBG("Master Arb Data not equal\n"); |
| 75 | return ret; |
| 76 | } |
| 77 | |
| 78 | return 0; |
| 79 | } |
| 80 | |
| 81 | static int msm_bus_rpm_req(int ctx, uint32_t rsc_type, uint32_t key, |
| 82 | struct msm_bus_node_hw_info *hw_info, bool valid) |
| 83 | { |
| 84 | struct msm_rpm_request *rpm_req; |
| 85 | int ret = 0, msg_id; |
| 86 | |
| 87 | if (ctx == ACTIVE_CTX) |
| 88 | ctx = MSM_RPM_CTX_ACTIVE_SET; |
| 89 | else if (ctx == DUAL_CTX) |
| 90 | ctx = MSM_RPM_CTX_SLEEP_SET; |
| 91 | |
| 92 | rpm_req = msm_rpm_create_request(ctx, rsc_type, hw_info->hw_id, 1); |
| 93 | if (rpm_req == NULL) { |
| 94 | MSM_BUS_WARN("RPM: Couldn't create RPM Request\n"); |
| 95 | return -ENXIO; |
| 96 | } |
| 97 | |
| 98 | if (valid) { |
| 99 | ret = msm_rpm_add_kvp_data(rpm_req, key, (const uint8_t *) |
| 100 | &hw_info->bw, (int)(sizeof(uint64_t))); |
| 101 | if (ret) { |
| 102 | MSM_BUS_WARN("RPM: Add KVP failed for RPM Req:%u\n", |
| 103 | rsc_type); |
Michael Bohan | 5a52a64 | 2013-01-18 16:16:03 -0800 | [diff] [blame] | 104 | goto free_rpm_request; |
Gagan Mac | b91c407 | 2012-05-09 16:00:31 -0600 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | MSM_BUS_DBG("Added Key: %d, Val: %llu, size: %d\n", key, |
| 108 | hw_info->bw, sizeof(uint64_t)); |
| 109 | } else { |
| 110 | /* Invalidate RPM requests */ |
| 111 | ret = msm_rpm_add_kvp_data(rpm_req, 0, NULL, 0); |
| 112 | if (ret) { |
| 113 | MSM_BUS_WARN("RPM: Add KVP failed for RPM Req:%u\n", |
| 114 | rsc_type); |
Michael Bohan | 5a52a64 | 2013-01-18 16:16:03 -0800 | [diff] [blame] | 115 | goto free_rpm_request; |
Gagan Mac | b91c407 | 2012-05-09 16:00:31 -0600 | [diff] [blame] | 116 | } |
| 117 | } |
| 118 | |
| 119 | msg_id = msm_rpm_send_request(rpm_req); |
| 120 | if (!msg_id) { |
| 121 | MSM_BUS_WARN("RPM: No message ID for req\n"); |
Michael Bohan | 5a52a64 | 2013-01-18 16:16:03 -0800 | [diff] [blame] | 122 | ret = -ENXIO; |
| 123 | goto free_rpm_request; |
Gagan Mac | b91c407 | 2012-05-09 16:00:31 -0600 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | ret = msm_rpm_wait_for_ack(msg_id); |
| 127 | if (ret) { |
| 128 | MSM_BUS_WARN("RPM: Ack failed\n"); |
Michael Bohan | 5a52a64 | 2013-01-18 16:16:03 -0800 | [diff] [blame] | 129 | goto free_rpm_request; |
Gagan Mac | b91c407 | 2012-05-09 16:00:31 -0600 | [diff] [blame] | 130 | } |
| 131 | |
Michael Bohan | 5a52a64 | 2013-01-18 16:16:03 -0800 | [diff] [blame] | 132 | free_rpm_request: |
| 133 | msm_rpm_free_request(rpm_req); |
| 134 | |
Gagan Mac | b91c407 | 2012-05-09 16:00:31 -0600 | [diff] [blame] | 135 | return ret; |
| 136 | } |
| 137 | |
| 138 | static int msm_bus_rpm_commit_arb(struct msm_bus_fabric_registration |
| 139 | *fab_pdata, int ctx, void *rpm_data, |
| 140 | struct commit_data *cd, bool valid) |
| 141 | { |
| 142 | int i, status = 0, rsc_type, key; |
| 143 | |
| 144 | MSM_BUS_DBG("Context: %d\n", ctx); |
| 145 | rsc_type = RPM_BUS_MASTER_REQ; |
| 146 | key = RPM_MASTER_FIELD_BW; |
| 147 | for (i = 0; i < fab_pdata->nmasters; i++) { |
| 148 | if (cd->mas_arb[i].dirty) { |
| 149 | MSM_BUS_DBG("MAS HWID: %d, BW: %llu DIRTY: %d\n", |
| 150 | cd->mas_arb[i].hw_id, |
| 151 | cd->mas_arb[i].bw, |
| 152 | cd->mas_arb[i].dirty); |
| 153 | status = msm_bus_rpm_req(ctx, rsc_type, key, |
| 154 | &cd->mas_arb[i], valid); |
| 155 | if (status) { |
| 156 | MSM_BUS_ERR("RPM: Req fail: mas:%d, bw:%llu\n", |
| 157 | cd->mas_arb[i].hw_id, |
| 158 | cd->mas_arb[i].bw); |
| 159 | break; |
| 160 | } else { |
| 161 | cd->mas_arb[i].dirty = false; |
| 162 | } |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | rsc_type = RPM_BUS_SLAVE_REQ; |
| 167 | key = RPM_SLAVE_FIELD_BW; |
| 168 | for (i = 0; i < fab_pdata->nslaves; i++) { |
| 169 | if (cd->slv_arb[i].dirty) { |
| 170 | MSM_BUS_DBG("SLV HWID: %d, BW: %llu DIRTY: %d\n", |
| 171 | cd->slv_arb[i].hw_id, |
| 172 | cd->slv_arb[i].bw, |
| 173 | cd->slv_arb[i].dirty); |
| 174 | status = msm_bus_rpm_req(ctx, rsc_type, key, |
| 175 | &cd->slv_arb[i], valid); |
| 176 | if (status) { |
| 177 | MSM_BUS_ERR("RPM: Req fail: slv:%d, bw:%llu\n", |
| 178 | cd->slv_arb[i].hw_id, |
| 179 | cd->slv_arb[i].bw); |
| 180 | break; |
| 181 | } else { |
| 182 | cd->slv_arb[i].dirty = false; |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | return status; |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * msm_bus_remote_hw_commit() - Commit the arbitration data to RPM |
| 192 | * @fabric: Fabric for which the data should be committed |
| 193 | **/ |
| 194 | int msm_bus_remote_hw_commit(struct msm_bus_fabric_registration |
| 195 | *fab_pdata, void *hw_data, void **cdata) |
| 196 | { |
| 197 | |
| 198 | int ret; |
| 199 | bool valid; |
| 200 | struct commit_data *dual_cd, *act_cd; |
| 201 | void *rpm_data = hw_data; |
| 202 | |
| 203 | MSM_BUS_DBG("\nReached RPM Commit\n"); |
| 204 | dual_cd = (struct commit_data *)cdata[DUAL_CTX]; |
| 205 | act_cd = (struct commit_data *)cdata[ACTIVE_CTX]; |
| 206 | |
| 207 | /* |
| 208 | * If the arb data for active set and sleep set is |
| 209 | * different, commit both sets. |
| 210 | * If the arb data for active set and sleep set is |
| 211 | * the same, invalidate the sleep set. |
| 212 | */ |
| 213 | ret = msm_bus_rpm_compare_cdata(fab_pdata, act_cd, dual_cd); |
| 214 | if (!ret) |
| 215 | /* Invalidate sleep set.*/ |
| 216 | valid = false; |
| 217 | else |
| 218 | valid = true; |
| 219 | |
| 220 | ret = msm_bus_rpm_commit_arb(fab_pdata, DUAL_CTX, rpm_data, |
| 221 | dual_cd, valid); |
| 222 | if (ret) |
| 223 | MSM_BUS_ERR("Error comiting fabric:%d in %d ctx\n", |
| 224 | fab_pdata->id, DUAL_CTX); |
| 225 | |
| 226 | valid = true; |
| 227 | ret = msm_bus_rpm_commit_arb(fab_pdata, ACTIVE_CTX, rpm_data, act_cd, |
| 228 | valid); |
| 229 | if (ret) |
| 230 | MSM_BUS_ERR("Error comiting fabric:%d in %d ctx\n", |
| 231 | fab_pdata->id, ACTIVE_CTX); |
| 232 | |
| 233 | return ret; |
| 234 | } |
| 235 | |
| 236 | int msm_bus_rpm_hw_init(struct msm_bus_fabric_registration *pdata, |
| 237 | struct msm_bus_hw_algorithm *hw_algo) |
| 238 | { |
| 239 | if (!pdata->ahb) |
| 240 | pdata->rpm_enabled = 1; |
| 241 | return 0; |
| 242 | } |