Prakash Dhavali | 7090c5f | 2015-11-02 17:55:19 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015 The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
| 28 | /** |
| 29 | * DOC: if_snoc.c |
| 30 | * |
| 31 | * c file for snoc specif implementations. |
| 32 | */ |
| 33 | |
| 34 | #include "hif.h" |
| 35 | #include "hif_main.h" |
| 36 | #include "hif_debug.h" |
| 37 | #include "hif_io32.h" |
| 38 | #include "ce_main.h" |
| 39 | #include "ce_tasklet.h" |
| 40 | |
| 41 | /** |
| 42 | * hif_bus_prevent_linkdown(): prevent linkdown |
| 43 | * |
| 44 | * Dummy function for busses and platforms that do not support |
| 45 | * link down. This may need to be replaced with a wakelock. |
| 46 | * |
| 47 | * This is duplicated here because CONFIG_CNSS can be defined |
| 48 | * even though it is not used for the snoc bus. |
| 49 | */ |
| 50 | void hif_bus_prevent_linkdown(bool flag) |
| 51 | { |
| 52 | HIF_ERROR("wlan: %s pcie power collapse ignored", |
| 53 | (flag ? "disable" : "enable")); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * hif_targ_is_awake(): check if target is awake |
| 58 | * |
| 59 | * This function returns true if the target is awake |
| 60 | * |
| 61 | * @scn: struct ol_softc |
| 62 | * @mem: mapped mem base |
| 63 | * |
| 64 | * Return: bool |
| 65 | */ |
| 66 | bool hif_targ_is_awake(struct ol_softc *scn, void *__iomem *mem) |
| 67 | { |
| 68 | return true; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * hif_reset_soc(): reset soc |
| 73 | * |
| 74 | * this function resets soc |
| 75 | * |
| 76 | * @hif_ctx: HIF context |
| 77 | * |
| 78 | * Return: void |
| 79 | */ |
| 80 | /* Function to reset SoC */ |
| 81 | void hif_reset_soc(void *hif_ctx) |
| 82 | { |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * hif_disable_isr(): disable isr |
| 87 | * |
| 88 | * This function disables isr and kills tasklets |
| 89 | * |
| 90 | * @hif_ctx: struct ol_softc |
| 91 | * |
| 92 | * Return: void |
| 93 | */ |
| 94 | void hif_disable_isr(void *hif_ctx) |
| 95 | { |
| 96 | struct ol_softc *scn = (struct ol_softc *)hif_ctx; |
| 97 | |
| 98 | hif_nointrs(scn); |
| 99 | ce_tasklet_kill(scn->hif_hdl); |
| 100 | cdf_atomic_set(&scn->active_tasklet_cnt, 0); |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * dump_ce_debug_register(): dump CE debug registers |
| 105 | * |
| 106 | * This function dumps CE debug registers |
| 107 | * |
| 108 | * @scn: struct ol_softc |
| 109 | * |
| 110 | * Return: void |
| 111 | */ |
| 112 | void dump_ce_debug_register(struct ol_softc *scn) |
| 113 | { |
| 114 | return; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * hif_bus_suspend() - suspend the bus |
| 119 | * |
| 120 | * This function suspends the bus, but snoc doesn't need to suspend. |
| 121 | * Therefore do nothing. |
| 122 | * |
| 123 | * Return: 0 for success and non-zero for failure |
| 124 | */ |
| 125 | int hif_bus_suspend(void) |
| 126 | { |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * hif_bus_resume() - hif resume API |
| 132 | * |
| 133 | * This function resumes the bus. but snoc doesn't need to resume. |
| 134 | * Therefore do nothing. |
| 135 | * |
| 136 | * Return: 0 for success and non-zero for failure |
| 137 | */ |
| 138 | int hif_bus_resume(void) |
| 139 | { |
| 140 | return 0; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * hif_enable_power_gating(): enable HW power gating |
| 145 | * |
| 146 | * Return: n/a |
| 147 | */ |
| 148 | void hif_enable_power_gating(void *hif_ctx) |
| 149 | { |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * hif_disable_aspm(): hif_disable_aspm |
| 154 | * |
| 155 | * Return: n/a |
| 156 | */ |
| 157 | void hif_disable_aspm(void) |
| 158 | { |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * hif_bus_close(): hif_bus_close |
| 163 | * |
| 164 | * Return: n/a |
| 165 | */ |
| 166 | void hif_bus_close(struct ol_softc *scn) |
| 167 | { |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * hif_bus_open(): hif_bus_open |
| 172 | * @scn: scn |
| 173 | * @bus_type: bus type |
| 174 | * |
| 175 | * Return: n/a |
| 176 | */ |
| 177 | CDF_STATUS hif_bus_open(struct ol_softc *scn, enum ath_hal_bus_type bus_type) |
| 178 | { |
| 179 | return CDF_STATUS_SUCCESS; |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * hif_get_target_type(): Get the target type |
| 184 | * |
| 185 | * This function is used to query the target type. |
| 186 | * |
| 187 | * @ol_sc: ol_softc struct pointer |
| 188 | * @dev: device pointer |
| 189 | * @bdev: bus dev pointer |
| 190 | * @bid: bus id pointer |
| 191 | * @hif_type: HIF type such as HIF_TYPE_QCA6180 |
| 192 | * @target_type: target type such as TARGET_TYPE_QCA6180 |
| 193 | * |
| 194 | * Return: 0 for success |
| 195 | */ |
| 196 | int hif_get_target_type(struct ol_softc *ol_sc, struct device *dev, |
| 197 | void *bdev, const hif_bus_id *bid, uint32_t *hif_type, |
| 198 | uint32_t *target_type) |
| 199 | { |
| 200 | /* TODO: need to use CNSS's HW version. Hard code for now */ |
| 201 | #ifdef QCA_WIFI_3_0_ADRASTEA |
| 202 | *hif_type = HIF_TYPE_ADRASTEA; |
| 203 | *target_type = TARGET_TYPE_ADRASTEA; |
| 204 | #else |
| 205 | *hif_type = 0; |
| 206 | *target_type = 0; |
| 207 | #endif |
| 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * hif_enable_bus(): hif_enable_bus |
| 213 | * @dev: dev |
| 214 | * @bdev: bus dev |
| 215 | * @bid: bus id |
| 216 | * @type: bus type |
| 217 | * |
| 218 | * Return: CDF_STATUS |
| 219 | */ |
| 220 | CDF_STATUS hif_enable_bus(struct ol_softc *ol_sc, |
| 221 | struct device *dev, void *bdev, |
| 222 | const hif_bus_id *bid, |
| 223 | enum hif_enable_type type) |
| 224 | { |
| 225 | int ret; |
| 226 | int hif_type; |
| 227 | int target_type; |
| 228 | ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); |
| 229 | if (ret) { |
| 230 | HIF_ERROR("%s: failed to set dma mask error = %d", |
| 231 | __func__, ret); |
| 232 | return ret; |
| 233 | } |
| 234 | |
| 235 | if (!ol_sc) { |
| 236 | HIF_ERROR("%s: hif_ctx is NULL", __func__); |
| 237 | return CDF_STATUS_E_NOMEM; |
| 238 | } |
| 239 | |
| 240 | ol_sc->aps_osdev.device = dev; |
| 241 | ol_sc->aps_osdev.bc.bc_handle = (void *)ol_sc->mem; |
| 242 | ol_sc->aps_osdev.bc.bc_bustype = type; |
| 243 | |
| 244 | ret = hif_get_target_type(ol_sc, dev, bdev, bid, |
| 245 | &hif_type, &target_type); |
| 246 | if (ret < 0) { |
| 247 | HIF_ERROR("%s: invalid device id/revision_id", __func__); |
| 248 | return CDF_STATUS_E_FAILURE; |
| 249 | } |
| 250 | |
| 251 | hif_register_tbl_attach(ol_sc, hif_type); |
| 252 | target_register_tbl_attach(ol_sc, target_type); |
| 253 | |
| 254 | HIF_TRACE("%s: X - hif_type = 0x%x, target_type = 0x%x", |
| 255 | __func__, hif_type, target_type); |
| 256 | |
| 257 | ret = hif_init_cdf_ctx(ol_sc); |
| 258 | if (ret != 0) { |
| 259 | HIF_ERROR("%s: cannot init CDF", __func__); |
| 260 | return CDF_STATUS_E_FAILURE; |
| 261 | } |
| 262 | |
| 263 | return CDF_STATUS_SUCCESS; |
| 264 | } |
| 265 | |
| 266 | /** |
| 267 | * hif_disable_bus(): hif_disable_bus |
| 268 | * |
| 269 | * This function disables the bus |
| 270 | * |
| 271 | * @bdev: bus dev |
| 272 | * |
| 273 | * Return: none |
| 274 | */ |
| 275 | void hif_disable_bus(void *bdev) |
| 276 | { |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | * hif_nointrs(): disable IRQ |
| 281 | * |
| 282 | * This function stops interrupt(s) |
| 283 | * |
| 284 | * @scn: struct ol_softc |
| 285 | * |
| 286 | * Return: none |
| 287 | */ |
| 288 | void hif_nointrs(struct ol_softc *scn) |
| 289 | { |
| 290 | if (scn->request_irq_done) { |
| 291 | ce_unregister_irq(scn->hif_hdl, 0xfff); |
| 292 | scn->request_irq_done = false; |
| 293 | } |
| 294 | } |