Houston Hoffman | 32bc8eb | 2016-03-14 21:11:34 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016 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 | /* this file dispatches functions to bus specific definitions */ |
| 30 | #include "hif_debug.h" |
| 31 | #include "hif.h" |
| 32 | #include "hif_main.h" |
| 33 | #include "multibus.h" |
Houston Hoffman | 162164c | 2016-03-14 21:12:10 -0700 | [diff] [blame^] | 34 | #include "ce_main.h" |
Houston Hoffman | 32bc8eb | 2016-03-14 21:11:34 -0700 | [diff] [blame] | 35 | |
| 36 | /** |
| 37 | * hif_intialize_default_ops() - intializes default operations values |
| 38 | * |
| 39 | * bus specific features should assign their dummy implementations here. |
| 40 | */ |
| 41 | static void hif_intialize_default_ops(struct hif_softc *hif_sc) |
| 42 | { |
| 43 | struct hif_bus_ops *bus_ops = &hif_sc->bus_ops; |
| 44 | |
| 45 | /* must be filled in by hif_bus_open */ |
| 46 | bus_ops->hif_bus_close = NULL; |
| 47 | |
| 48 | /* dummy implementations */ |
| 49 | } |
| 50 | |
| 51 | #define NUM_OPS (sizeof(struct hif_bus_ops) / sizeof(void *)) |
| 52 | |
| 53 | /** |
| 54 | * hif_verify_basic_ops() - ensure required bus apis are defined |
| 55 | * |
| 56 | * all bus operations must be defined to avoid crashes |
| 57 | * itterate over the structure and ensure all function pointers |
| 58 | * are non null. |
| 59 | * |
| 60 | * Return: QDF_STATUS_SUCCESS if all the operations are defined |
| 61 | */ |
| 62 | static QDF_STATUS hif_verify_basic_ops(struct hif_softc *hif_sc) |
| 63 | { |
| 64 | struct hif_bus_ops *bus_ops = &hif_sc->bus_ops; |
| 65 | void **ops_array = (void *)bus_ops; |
| 66 | QDF_STATUS status = QDF_STATUS_SUCCESS; |
| 67 | int i; |
| 68 | |
| 69 | for (i = 0; i < NUM_OPS; i++) { |
| 70 | if (!ops_array[i]) { |
| 71 | HIF_ERROR("%s: function %d is null", __func__, i); |
| 72 | status = QDF_STATUS_E_NOSUPPORT; |
| 73 | } |
| 74 | } |
| 75 | return status; |
| 76 | } |
| 77 | |
| 78 | /** |
Houston Hoffman | 162164c | 2016-03-14 21:12:10 -0700 | [diff] [blame^] | 79 | * hif_bus_get_context_size - API to return size of the bus specific structure |
| 80 | * |
| 81 | * Return: sizeof of hif_pci_softc |
| 82 | */ |
| 83 | int hif_bus_get_context_size(enum qdf_bus_type bus_type) |
| 84 | { |
| 85 | switch (bus_type) { |
| 86 | case QDF_BUS_TYPE_PCI: |
| 87 | return hif_pci_get_context_size(); |
| 88 | case QDF_BUS_TYPE_SNOC: |
| 89 | return hif_snoc_get_context_size(); |
| 90 | default: |
| 91 | return 0; |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | /** |
Houston Hoffman | 32bc8eb | 2016-03-14 21:11:34 -0700 | [diff] [blame] | 96 | * hif_bus_open() - initialize the bus_ops and call the bus specific open |
| 97 | * hif_sc: hif_context |
| 98 | * bus_type: type of bus being enumerated |
| 99 | * |
| 100 | * Return: QDF_STATUS_SUCCESS or error |
| 101 | */ |
| 102 | QDF_STATUS hif_bus_open(struct hif_softc *hif_sc, |
| 103 | enum qdf_bus_type bus_type) |
| 104 | { |
| 105 | QDF_STATUS status = QDF_STATUS_E_INVAL; |
| 106 | |
| 107 | hif_intialize_default_ops(hif_sc); |
| 108 | |
| 109 | switch (bus_type) { |
| 110 | case QDF_BUS_TYPE_PCI: |
Houston Hoffman | 54ef87d | 2016-03-14 21:11:58 -0700 | [diff] [blame] | 111 | status = hif_initialize_pci_ops(hif_sc); |
Houston Hoffman | 32bc8eb | 2016-03-14 21:11:34 -0700 | [diff] [blame] | 112 | break; |
| 113 | case QDF_BUS_TYPE_SNOC: |
| 114 | status = hif_initialize_snoc_ops(&hif_sc->bus_ops); |
| 115 | break; |
| 116 | default: |
| 117 | status = QDF_STATUS_E_NOSUPPORT; |
| 118 | break; |
| 119 | } |
| 120 | |
| 121 | if (status != QDF_STATUS_SUCCESS) { |
| 122 | HIF_ERROR("%s: %d not supported", __func__, bus_type); |
| 123 | return status; |
| 124 | } |
| 125 | |
| 126 | status = hif_verify_basic_ops(hif_sc); |
| 127 | if (status != QDF_STATUS_SUCCESS) |
| 128 | return status; |
| 129 | |
| 130 | return hif_sc->bus_ops.hif_bus_open(hif_sc, bus_type); |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * hif_bus_close() - close the bus |
| 135 | * @hif_sc: hif_context |
| 136 | */ |
| 137 | void hif_bus_close(struct hif_softc *hif_sc) |
| 138 | { |
| 139 | hif_sc->bus_ops.hif_bus_close(hif_sc); |
| 140 | } |
Houston Hoffman | 4ca03b6 | 2016-03-14 21:11:51 -0700 | [diff] [blame] | 141 | |
| 142 | /** |
| 143 | * hif_bus_prevent_linkdown() - prevent linkdown |
| 144 | * @hif_ctx: hif context |
| 145 | * @flag: true = keep bus alive false = let bus go to sleep |
| 146 | * |
| 147 | * Keeps the bus awake durring suspend. |
| 148 | */ |
| 149 | void hif_bus_prevent_linkdown(struct hif_softc *hif_sc, bool flag) |
| 150 | { |
| 151 | hif_sc->bus_ops.hif_bus_prevent_linkdown(hif_sc, flag); |
| 152 | } |
| 153 | |
| 154 | |
| 155 | void hif_reset_soc(struct hif_opaque_softc *hif_ctx) |
| 156 | { |
| 157 | struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx); |
| 158 | hif_sc->bus_ops.hif_reset_soc(hif_sc); |
| 159 | } |
| 160 | |
| 161 | int hif_bus_suspend(struct hif_opaque_softc *hif_ctx) |
| 162 | { |
| 163 | struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx); |
| 164 | return hif_sc->bus_ops.hif_bus_suspend(hif_sc); |
| 165 | } |
| 166 | |
| 167 | int hif_bus_resume(struct hif_opaque_softc *hif_ctx) |
| 168 | { |
| 169 | struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_ctx); |
| 170 | return hif_sc->bus_ops.hif_bus_resume(hif_sc); |
| 171 | } |
| 172 | |
| 173 | int hif_target_sleep_state_adjust(struct hif_softc *hif_sc, |
| 174 | bool sleep_ok, bool wait_for_it) |
| 175 | { |
| 176 | return hif_sc->bus_ops.hif_target_sleep_state_adjust(hif_sc, |
| 177 | sleep_ok, wait_for_it); |
| 178 | } |
Houston Hoffman | 8f239f6 | 2016-03-14 21:12:05 -0700 | [diff] [blame] | 179 | |
| 180 | void hif_disable_isr(struct hif_opaque_softc *hif_hdl) |
| 181 | { |
| 182 | struct hif_softc *hif_sc = HIF_GET_SOFTC(hif_hdl); |
| 183 | hif_sc->bus_ops.hif_disable_isr(hif_sc); |
| 184 | } |
| 185 | |
| 186 | void hif_nointrs(struct hif_softc *hif_sc) |
| 187 | { |
| 188 | hif_sc->bus_ops.hif_nointrs(hif_sc); |
| 189 | } |
| 190 | |
| 191 | QDF_STATUS hif_enable_bus(struct hif_softc *hif_sc, struct device *dev, |
| 192 | void *bdev, const hif_bus_id *bid, |
| 193 | enum hif_enable_type type) |
| 194 | { |
| 195 | return hif_sc->bus_ops.hif_enable_bus(hif_sc, dev, bdev, bid, type); |
| 196 | } |
| 197 | |
| 198 | void hif_disable_bus(struct hif_softc *hif_sc) |
| 199 | { |
| 200 | hif_sc->bus_ops.hif_disable_bus(hif_sc); |
| 201 | } |
| 202 | |
| 203 | int hif_bus_configure(struct hif_softc *hif_sc) |
| 204 | { |
| 205 | return hif_sc->bus_ops.hif_bus_configure(hif_sc); |
| 206 | } |
| 207 | |
| 208 | void hif_irq_enable(struct hif_softc *hif_sc, int irq_id) |
| 209 | { |
| 210 | hif_sc->bus_ops.hif_irq_enable(hif_sc, irq_id); |
| 211 | } |
| 212 | |
| 213 | void hif_irq_disable(struct hif_softc *hif_sc, int irq_id) |
| 214 | { |
| 215 | hif_sc->bus_ops.hif_irq_disable(hif_sc, irq_id); |
| 216 | } |