Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [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 | #include <linux/module.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/errno.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/debugfs.h> |
| 19 | #include <linux/usb/audio.h> |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 20 | #include <linux/usb/audio-v2.h> |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 21 | #include <linux/uaccess.h> |
| 22 | #include <sound/pcm.h> |
| 23 | #include <sound/core.h> |
| 24 | #include <sound/asound.h> |
| 25 | #include <linux/usb.h> |
| 26 | #include <linux/qmi_encdec.h> |
| 27 | #include <soc/qcom/msm_qmi_interface.h> |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 28 | #include <linux/iommu.h> |
Patrick Daly | de1c64d | 2017-09-12 16:30:12 -0700 | [diff] [blame] | 29 | #include <linux/dma-mapping.h> |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 30 | #include <linux/platform_device.h> |
Ajay Agarwal | 2a39f67 | 2017-04-11 11:58:28 +0530 | [diff] [blame] | 31 | #include <linux/usb/audio-v3.h> |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 32 | |
| 33 | #include "usbaudio.h" |
| 34 | #include "card.h" |
| 35 | #include "helper.h" |
| 36 | #include "pcm.h" |
| 37 | #include "usb_audio_qmi_v01.h" |
| 38 | |
| 39 | #define SND_PCM_CARD_NUM_MASK 0xffff0000 |
| 40 | #define SND_PCM_DEV_NUM_MASK 0xff00 |
| 41 | #define SND_PCM_STREAM_DIRECTION 0xff |
| 42 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 43 | #define PREPEND_SID_TO_IOVA(iova, sid) (u64)(((u64)(iova)) | \ |
| 44 | (((u64)sid) << 32)) |
| 45 | |
| 46 | /* event ring iova base address */ |
| 47 | #define IOVA_BASE 0x1000 |
| 48 | |
Hemant Kumar | 81156ed | 2017-09-22 12:34:52 -0700 | [diff] [blame] | 49 | #define IOVA_XFER_RING_BASE (IOVA_BASE + PAGE_SIZE * (SNDRV_CARDS + 1)) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 50 | #define IOVA_XFER_BUF_BASE (IOVA_XFER_RING_BASE + PAGE_SIZE * SNDRV_CARDS * 32) |
| 51 | #define IOVA_XFER_RING_MAX (IOVA_XFER_BUF_BASE - PAGE_SIZE) |
| 52 | #define IOVA_XFER_BUF_MAX (0xfffff000 - PAGE_SIZE) |
| 53 | |
Hemant Kumar | beb99fd | 2016-10-10 16:49:34 -0700 | [diff] [blame] | 54 | #define MAX_XFER_BUFF_LEN (24 * PAGE_SIZE) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 55 | |
| 56 | struct iova_info { |
| 57 | struct list_head list; |
| 58 | unsigned long start_iova; |
| 59 | size_t size; |
| 60 | bool in_use; |
| 61 | }; |
| 62 | |
| 63 | struct intf_info { |
| 64 | unsigned long data_xfer_ring_va; |
| 65 | size_t data_xfer_ring_size; |
| 66 | unsigned long sync_xfer_ring_va; |
| 67 | size_t sync_xfer_ring_size; |
| 68 | unsigned long xfer_buf_va; |
| 69 | size_t xfer_buf_size; |
| 70 | phys_addr_t xfer_buf_pa; |
Hemant Kumar | c08fda6 | 2017-11-14 20:20:04 -0800 | [diff] [blame] | 71 | unsigned int data_ep_pipe; |
| 72 | unsigned int sync_ep_pipe; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 73 | u8 *xfer_buf; |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 74 | u8 intf_num; |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 75 | u8 pcm_card_num; |
| 76 | u8 pcm_dev_num; |
| 77 | u8 direction; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 78 | bool in_use; |
| 79 | }; |
| 80 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 81 | struct uaudio_dev { |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 82 | struct usb_device *udev; |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 83 | /* audio control interface */ |
| 84 | struct usb_host_interface *ctrl_intf; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 85 | unsigned int card_num; |
Hemant Kumar | c59cc94 | 2017-10-06 11:25:25 -0700 | [diff] [blame] | 86 | unsigned int usb_core_id; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 87 | atomic_t in_use; |
| 88 | struct kref kref; |
| 89 | wait_queue_head_t disconnect_wq; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 90 | |
| 91 | /* interface specific */ |
| 92 | int num_intf; |
| 93 | struct intf_info *info; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 94 | }; |
| 95 | |
| 96 | static struct uaudio_dev uadev[SNDRV_CARDS]; |
| 97 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 98 | struct uaudio_qmi_dev { |
| 99 | struct device *dev; |
| 100 | u32 sid; |
| 101 | u32 intr_num; |
| 102 | struct iommu_domain *domain; |
| 103 | |
| 104 | /* list to keep track of available iova */ |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 105 | struct list_head xfer_ring_list; |
| 106 | size_t xfer_ring_iova_size; |
| 107 | unsigned long curr_xfer_ring_iova; |
| 108 | struct list_head xfer_buf_list; |
| 109 | size_t xfer_buf_iova_size; |
| 110 | unsigned long curr_xfer_buf_iova; |
| 111 | /* bit fields representing pcm card enabled */ |
| 112 | unsigned long card_slot; |
Liangliang Lu | 0ae5cc3 | 2018-07-17 13:26:46 +0800 | [diff] [blame] | 113 | /* indicate event ring mapped or not */ |
| 114 | bool er_mapped; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 115 | }; |
| 116 | |
| 117 | static struct uaudio_qmi_dev *uaudio_qdev; |
| 118 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 119 | struct uaudio_qmi_svc { |
| 120 | struct qmi_handle *uaudio_svc_hdl; |
| 121 | void *curr_conn; |
| 122 | struct work_struct recv_msg_work; |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 123 | struct work_struct qmi_disconnect_work; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 124 | struct workqueue_struct *uaudio_wq; |
| 125 | ktime_t t_request_recvd; |
| 126 | ktime_t t_resp_sent; |
| 127 | }; |
| 128 | |
| 129 | static struct uaudio_qmi_svc *uaudio_svc; |
| 130 | |
| 131 | static struct msg_desc uaudio_stream_req_desc = { |
| 132 | .max_msg_len = QMI_UAUDIO_STREAM_REQ_MSG_V01_MAX_MSG_LEN, |
| 133 | .msg_id = QMI_UAUDIO_STREAM_REQ_V01, |
| 134 | .ei_array = qmi_uaudio_stream_req_msg_v01_ei, |
| 135 | }; |
| 136 | |
| 137 | static struct msg_desc uaudio_stream_resp_desc = { |
| 138 | .max_msg_len = QMI_UAUDIO_STREAM_RESP_MSG_V01_MAX_MSG_LEN, |
| 139 | .msg_id = QMI_UAUDIO_STREAM_RESP_V01, |
| 140 | .ei_array = qmi_uaudio_stream_resp_msg_v01_ei, |
| 141 | }; |
| 142 | |
Vamsi Krishna Samavedam | 1e63453 | 2016-09-13 14:09:37 -0700 | [diff] [blame] | 143 | static struct msg_desc uaudio_stream_ind_desc = { |
| 144 | .max_msg_len = QMI_UAUDIO_STREAM_IND_MSG_V01_MAX_MSG_LEN, |
| 145 | .msg_id = QMI_UADUIO_STREAM_IND_V01, |
| 146 | .ei_array = qmi_uaudio_stream_ind_msg_v01_ei, |
| 147 | }; |
| 148 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 149 | enum mem_type { |
| 150 | MEM_EVENT_RING, |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 151 | MEM_XFER_RING, |
| 152 | MEM_XFER_BUF, |
| 153 | }; |
| 154 | |
Hemant Kumar | a4f6101 | 2016-10-13 15:41:55 -0700 | [diff] [blame] | 155 | enum usb_qmi_audio_format { |
| 156 | USB_QMI_PCM_FORMAT_S8 = 0, |
| 157 | USB_QMI_PCM_FORMAT_U8, |
| 158 | USB_QMI_PCM_FORMAT_S16_LE, |
| 159 | USB_QMI_PCM_FORMAT_S16_BE, |
| 160 | USB_QMI_PCM_FORMAT_U16_LE, |
| 161 | USB_QMI_PCM_FORMAT_U16_BE, |
| 162 | USB_QMI_PCM_FORMAT_S24_LE, |
| 163 | USB_QMI_PCM_FORMAT_S24_BE, |
| 164 | USB_QMI_PCM_FORMAT_U24_LE, |
| 165 | USB_QMI_PCM_FORMAT_U24_BE, |
| 166 | USB_QMI_PCM_FORMAT_S24_3LE, |
| 167 | USB_QMI_PCM_FORMAT_S24_3BE, |
| 168 | USB_QMI_PCM_FORMAT_U24_3LE, |
| 169 | USB_QMI_PCM_FORMAT_U24_3BE, |
| 170 | USB_QMI_PCM_FORMAT_S32_LE, |
| 171 | USB_QMI_PCM_FORMAT_S32_BE, |
| 172 | USB_QMI_PCM_FORMAT_U32_LE, |
| 173 | USB_QMI_PCM_FORMAT_U32_BE, |
| 174 | }; |
| 175 | |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 176 | static void uaudio_iommu_unmap(enum mem_type mtype, unsigned long va, |
| 177 | size_t iova_size, size_t mapped_iova_size); |
| 178 | |
Hemant Kumar | 81156ed | 2017-09-22 12:34:52 -0700 | [diff] [blame] | 179 | static enum usb_audio_device_speed_enum_v01 |
| 180 | get_speed_info(enum usb_device_speed udev_speed) |
| 181 | { |
| 182 | switch (udev_speed) { |
| 183 | case USB_SPEED_LOW: |
| 184 | return USB_AUDIO_DEVICE_SPEED_LOW_V01; |
| 185 | case USB_SPEED_FULL: |
| 186 | return USB_AUDIO_DEVICE_SPEED_FULL_V01; |
| 187 | case USB_SPEED_HIGH: |
| 188 | return USB_AUDIO_DEVICE_SPEED_HIGH_V01; |
| 189 | case USB_SPEED_SUPER: |
| 190 | return USB_AUDIO_DEVICE_SPEED_SUPER_V01; |
Hemant Kumar | c59cc94 | 2017-10-06 11:25:25 -0700 | [diff] [blame] | 191 | case USB_SPEED_SUPER_PLUS: |
| 192 | return USB_AUDIO_DEVICE_SPEED_SUPER_PLUS_V01; |
Hemant Kumar | 81156ed | 2017-09-22 12:34:52 -0700 | [diff] [blame] | 193 | default: |
| 194 | pr_err("%s: udev speed %d\n", __func__, udev_speed); |
| 195 | return USB_AUDIO_DEVICE_SPEED_INVALID_V01; |
| 196 | } |
| 197 | } |
| 198 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 199 | static unsigned long uaudio_get_iova(unsigned long *curr_iova, |
| 200 | size_t *curr_iova_size, struct list_head *head, size_t size) |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 201 | { |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 202 | struct iova_info *info, *new_info = NULL; |
| 203 | struct list_head *curr_head; |
| 204 | unsigned long va = 0; |
| 205 | size_t tmp_size = size; |
| 206 | bool found = false; |
| 207 | |
| 208 | if (size % PAGE_SIZE) { |
| 209 | pr_err("%s: size %zu is not page size multiple\n", __func__, |
| 210 | size); |
| 211 | goto done; |
| 212 | } |
| 213 | |
| 214 | if (size > *curr_iova_size) { |
| 215 | pr_err("%s: size %zu > curr size %zu\n", __func__, size, |
| 216 | *curr_iova_size); |
| 217 | goto done; |
| 218 | } |
| 219 | if (*curr_iova_size == 0) { |
| 220 | pr_err("%s: iova mapping is full\n", __func__); |
| 221 | goto done; |
| 222 | } |
| 223 | |
| 224 | list_for_each_entry(info, head, list) { |
| 225 | /* exact size iova_info */ |
| 226 | if (!info->in_use && info->size == size) { |
| 227 | info->in_use = true; |
| 228 | va = info->start_iova; |
| 229 | *curr_iova_size -= size; |
| 230 | found = true; |
| 231 | pr_debug("%s: exact size :%zu found\n", __func__, size); |
| 232 | goto done; |
| 233 | } else if (!info->in_use && tmp_size >= info->size) { |
| 234 | if (!new_info) |
| 235 | new_info = info; |
| 236 | pr_debug("%s: partial size: %zu found\n", __func__, |
| 237 | info->size); |
| 238 | tmp_size -= info->size; |
| 239 | if (tmp_size) |
| 240 | continue; |
| 241 | |
| 242 | va = new_info->start_iova; |
| 243 | for (curr_head = &new_info->list; curr_head != |
| 244 | &info->list; curr_head = curr_head->next) { |
| 245 | new_info = list_entry(curr_head, struct |
| 246 | iova_info, list); |
| 247 | new_info->in_use = true; |
| 248 | } |
| 249 | info->in_use = true; |
| 250 | *curr_iova_size -= size; |
| 251 | found = true; |
| 252 | goto done; |
| 253 | } else { |
| 254 | /* iova region in use */ |
| 255 | new_info = NULL; |
| 256 | tmp_size = size; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | info = kzalloc(sizeof(struct iova_info), GFP_KERNEL); |
| 261 | if (!info) { |
| 262 | va = 0; |
| 263 | goto done; |
| 264 | } |
| 265 | |
| 266 | va = info->start_iova = *curr_iova; |
| 267 | info->size = size; |
| 268 | info->in_use = true; |
| 269 | *curr_iova += size; |
| 270 | *curr_iova_size -= size; |
| 271 | found = true; |
| 272 | list_add_tail(&info->list, head); |
| 273 | |
| 274 | done: |
| 275 | if (!found) |
| 276 | pr_err("%s: unable to find %zu size iova\n", __func__, size); |
| 277 | else |
| 278 | pr_debug("%s: va:%lu curr_iova:%lu curr_iova_size:%zu\n", |
| 279 | __func__, va, *curr_iova, *curr_iova_size); |
| 280 | |
| 281 | return va; |
| 282 | } |
| 283 | |
| 284 | static unsigned long uaudio_iommu_map(enum mem_type mtype, phys_addr_t pa, |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 285 | size_t size, struct sg_table *sgt) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 286 | { |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 287 | unsigned long va_sg, va = 0; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 288 | bool map = true; |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 289 | int i, ret; |
| 290 | size_t sg_len, total_len = 0; |
| 291 | struct scatterlist *sg; |
| 292 | phys_addr_t pa_sg; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 293 | |
| 294 | switch (mtype) { |
| 295 | case MEM_EVENT_RING: |
| 296 | va = IOVA_BASE; |
| 297 | /* er already mapped */ |
Liangliang Lu | 0ae5cc3 | 2018-07-17 13:26:46 +0800 | [diff] [blame] | 298 | if (uaudio_qdev->er_mapped) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 299 | map = false; |
| 300 | break; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 301 | case MEM_XFER_RING: |
| 302 | va = uaudio_get_iova(&uaudio_qdev->curr_xfer_ring_iova, |
| 303 | &uaudio_qdev->xfer_ring_iova_size, &uaudio_qdev->xfer_ring_list, |
| 304 | size); |
| 305 | break; |
| 306 | case MEM_XFER_BUF: |
| 307 | va = uaudio_get_iova(&uaudio_qdev->curr_xfer_buf_iova, |
| 308 | &uaudio_qdev->xfer_buf_iova_size, &uaudio_qdev->xfer_buf_list, |
| 309 | size); |
| 310 | break; |
| 311 | default: |
| 312 | pr_err("%s: unknown mem type %d\n", __func__, mtype); |
| 313 | } |
| 314 | |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 315 | if (!va || !map) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 316 | goto done; |
| 317 | |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 318 | if (!sgt) |
| 319 | goto skip_sgt_map; |
| 320 | |
| 321 | va_sg = va; |
| 322 | for_each_sg(sgt->sgl, sg, sgt->nents, i) { |
| 323 | sg_len = PAGE_ALIGN(sg->offset + sg->length); |
| 324 | pa_sg = page_to_phys(sg_page(sg)); |
| 325 | ret = iommu_map(uaudio_qdev->domain, va_sg, pa_sg, sg_len, |
| 326 | IOMMU_READ | IOMMU_WRITE | IOMMU_MMIO); |
| 327 | if (ret) { |
| 328 | pr_err("%s:mapping failed ret%d\n", __func__, ret); |
| 329 | pr_err("memtype:%d, pa:%pK iova:%lu sg_len:%zu\n", |
| 330 | mtype, &pa_sg, va_sg, sg_len); |
| 331 | uaudio_iommu_unmap(MEM_XFER_BUF, va, size, total_len); |
| 332 | va = 0; |
| 333 | goto done; |
| 334 | } |
| 335 | pr_debug("%s:memtype %d:map pa:%pK to iova:%lu len:%zu\n", |
| 336 | __func__, mtype, &pa_sg, va_sg, sg_len); |
| 337 | va_sg += sg_len; |
| 338 | total_len += sg_len; |
| 339 | } |
| 340 | |
| 341 | if (size != total_len) { |
| 342 | pr_err("%s: iova size %zu != mapped iova size %zu\n", __func__, |
| 343 | size, total_len); |
| 344 | uaudio_iommu_unmap(MEM_XFER_BUF, va, size, total_len); |
| 345 | va = 0; |
| 346 | } |
| 347 | return va; |
| 348 | |
| 349 | skip_sgt_map: |
| 350 | pr_debug("%s:memtype:%d map pa:%pK to iova %lu size:%zu\n", __func__, |
| 351 | mtype, &pa, va, size); |
| 352 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 353 | ret = iommu_map(uaudio_qdev->domain, va, pa, size, |
| 354 | IOMMU_READ | IOMMU_WRITE | IOMMU_MMIO); |
| 355 | if (ret) |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 356 | pr_err("%s:failed to map pa:%pK iova:%lu memtype:%d ret:%d\n", |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 357 | __func__, &pa, va, mtype, ret); |
| 358 | done: |
| 359 | return va; |
| 360 | } |
| 361 | |
| 362 | static void uaudio_put_iova(unsigned long va, size_t size, struct list_head |
| 363 | *head, size_t *curr_iova_size) |
| 364 | { |
| 365 | struct iova_info *info; |
| 366 | size_t tmp_size = size; |
| 367 | bool found = false; |
| 368 | |
| 369 | list_for_each_entry(info, head, list) { |
| 370 | if (info->start_iova == va) { |
| 371 | if (!info->in_use) { |
| 372 | pr_err("%s: va %lu is not in use\n", __func__, |
| 373 | va); |
| 374 | return; |
| 375 | } |
| 376 | found = true; |
| 377 | info->in_use = false; |
| 378 | if (info->size == size) |
| 379 | goto done; |
| 380 | } |
| 381 | |
| 382 | if (found && tmp_size >= info->size) { |
| 383 | info->in_use = false; |
| 384 | tmp_size -= info->size; |
| 385 | if (!tmp_size) |
| 386 | goto done; |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | if (!found) { |
| 391 | pr_err("%s: unable to find the va %lu\n", __func__, va); |
| 392 | return; |
| 393 | } |
| 394 | done: |
| 395 | *curr_iova_size += size; |
| 396 | pr_debug("%s: curr_iova_size %zu\n", __func__, *curr_iova_size); |
| 397 | } |
| 398 | |
| 399 | static void uaudio_iommu_unmap(enum mem_type mtype, unsigned long va, |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 400 | size_t iova_size, size_t mapped_iova_size) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 401 | { |
| 402 | size_t umap_size; |
| 403 | bool unmap = true; |
| 404 | |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 405 | if (!va || !iova_size) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 406 | return; |
| 407 | |
| 408 | switch (mtype) { |
| 409 | case MEM_EVENT_RING: |
Liangliang Lu | 0ae5cc3 | 2018-07-17 13:26:46 +0800 | [diff] [blame] | 410 | if (uaudio_qdev->er_mapped) |
| 411 | uaudio_qdev->er_mapped = false; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 412 | else |
| 413 | unmap = false; |
| 414 | break; |
Hemant Kumar | 81156ed | 2017-09-22 12:34:52 -0700 | [diff] [blame] | 415 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 416 | case MEM_XFER_RING: |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 417 | uaudio_put_iova(va, iova_size, &uaudio_qdev->xfer_ring_list, |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 418 | &uaudio_qdev->xfer_ring_iova_size); |
| 419 | break; |
| 420 | case MEM_XFER_BUF: |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 421 | uaudio_put_iova(va, iova_size, &uaudio_qdev->xfer_buf_list, |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 422 | &uaudio_qdev->xfer_buf_iova_size); |
| 423 | break; |
| 424 | default: |
| 425 | pr_err("%s: unknown mem type %d\n", __func__, mtype); |
| 426 | unmap = false; |
| 427 | } |
| 428 | |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 429 | if (!unmap || !mapped_iova_size) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 430 | return; |
| 431 | |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 432 | pr_debug("%s:memtype %d: unmap iova %lu size %zu\n", __func__, mtype, |
| 433 | va, mapped_iova_size); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 434 | |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 435 | umap_size = iommu_unmap(uaudio_qdev->domain, va, mapped_iova_size); |
| 436 | if (umap_size != mapped_iova_size) |
| 437 | pr_err("%s:unmapped size %zu for iova %lu of mapped size %zu\n", |
| 438 | __func__, umap_size, va, mapped_iova_size); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 439 | } |
| 440 | |
| 441 | static int prepare_qmi_response(struct snd_usb_substream *subs, |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 442 | struct qmi_uaudio_stream_req_msg_v01 *req_msg, |
| 443 | struct qmi_uaudio_stream_resp_msg_v01 *resp, int info_idx) |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 444 | { |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 445 | struct usb_interface *iface; |
| 446 | struct usb_host_interface *alts; |
| 447 | struct usb_interface_descriptor *altsd; |
| 448 | struct usb_host_endpoint *ep; |
| 449 | struct uac_format_type_i_continuous_descriptor *fmt; |
| 450 | struct uac_format_type_i_discrete_descriptor *fmt_v1; |
| 451 | struct uac_format_type_i_ext_descriptor *fmt_v2; |
| 452 | struct uac1_as_header_descriptor *as; |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 453 | int ret; |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 454 | int protocol, card_num, pcm_dev_num; |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 455 | void *hdr_ptr; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 456 | u8 *xfer_buf; |
Hemant Kumar | c08fda6 | 2017-11-14 20:20:04 -0800 | [diff] [blame] | 457 | unsigned int data_ep_pipe = 0, sync_ep_pipe = 0; |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 458 | u32 len, mult, remainder, xfer_buf_len; |
| 459 | unsigned long va, tr_data_va = 0, tr_sync_va = 0; |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 460 | phys_addr_t xhci_pa, xfer_buf_pa, tr_data_pa = 0, tr_sync_pa = 0; |
| 461 | dma_addr_t dma; |
| 462 | struct sg_table sgt; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 463 | |
| 464 | iface = usb_ifnum_to_if(subs->dev, subs->interface); |
| 465 | if (!iface) { |
| 466 | pr_err("%s: interface # %d does not exist\n", __func__, |
| 467 | subs->interface); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 468 | ret = -ENODEV; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 469 | goto err; |
| 470 | } |
| 471 | |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 472 | pcm_dev_num = (req_msg->usb_token & SND_PCM_DEV_NUM_MASK) >> 8; |
| 473 | card_num = (req_msg->usb_token & SND_PCM_CARD_NUM_MASK) >> 16; |
| 474 | xfer_buf_len = req_msg->xfer_buff_size; |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 475 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 476 | alts = &iface->altsetting[subs->altset_idx]; |
| 477 | altsd = get_iface_desc(alts); |
| 478 | protocol = altsd->bInterfaceProtocol; |
| 479 | |
| 480 | /* get format type */ |
Ajay Agarwal | 2a39f67 | 2017-04-11 11:58:28 +0530 | [diff] [blame] | 481 | if (protocol != UAC_VERSION_3) { |
| 482 | fmt = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, |
| 483 | UAC_FORMAT_TYPE); |
| 484 | if (!fmt) { |
| 485 | pr_err("%s: %u:%d : no UAC_FORMAT_TYPE desc\n", |
| 486 | __func__, subs->interface, subs->altset_idx); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 487 | ret = -ENODEV; |
Ajay Agarwal | 2a39f67 | 2017-04-11 11:58:28 +0530 | [diff] [blame] | 488 | goto err; |
| 489 | } |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 490 | } |
| 491 | |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 492 | if (!uadev[card_num].ctrl_intf) { |
| 493 | pr_err("%s: audio ctrl intf info not cached\n", __func__); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 494 | ret = -ENODEV; |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 495 | goto err; |
| 496 | } |
| 497 | |
Ajay Agarwal | 2a39f67 | 2017-04-11 11:58:28 +0530 | [diff] [blame] | 498 | if (protocol != UAC_VERSION_3) { |
| 499 | hdr_ptr = snd_usb_find_csint_desc( |
| 500 | uadev[card_num].ctrl_intf->extra, |
| 501 | uadev[card_num].ctrl_intf->extralen, |
| 502 | NULL, UAC_HEADER); |
| 503 | if (!hdr_ptr) { |
| 504 | pr_err("%s: no UAC_HEADER desc\n", __func__); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 505 | ret = -ENODEV; |
Ajay Agarwal | 2a39f67 | 2017-04-11 11:58:28 +0530 | [diff] [blame] | 506 | goto err; |
| 507 | } |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 508 | } |
| 509 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 510 | if (protocol == UAC_VERSION_1) { |
| 511 | as = snd_usb_find_csint_desc(alts->extra, alts->extralen, NULL, |
| 512 | UAC_AS_GENERAL); |
| 513 | if (!as) { |
| 514 | pr_err("%s: %u:%d : no UAC_AS_GENERAL desc\n", __func__, |
| 515 | subs->interface, subs->altset_idx); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 516 | ret = -ENODEV; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 517 | goto err; |
| 518 | } |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 519 | resp->data_path_delay = as->bDelay; |
| 520 | resp->data_path_delay_valid = 1; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 521 | fmt_v1 = (struct uac_format_type_i_discrete_descriptor *)fmt; |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 522 | resp->usb_audio_subslot_size = fmt_v1->bSubframeSize; |
| 523 | resp->usb_audio_subslot_size_valid = 1; |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 524 | |
| 525 | resp->usb_audio_spec_revision = |
| 526 | ((struct uac1_ac_header_descriptor *)hdr_ptr)->bcdADC; |
| 527 | resp->usb_audio_spec_revision_valid = 1; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 528 | } else if (protocol == UAC_VERSION_2) { |
| 529 | fmt_v2 = (struct uac_format_type_i_ext_descriptor *)fmt; |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 530 | resp->usb_audio_subslot_size = fmt_v2->bSubslotSize; |
| 531 | resp->usb_audio_subslot_size_valid = 1; |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 532 | |
| 533 | resp->usb_audio_spec_revision = |
| 534 | ((struct uac2_ac_header_descriptor *)hdr_ptr)->bcdADC; |
| 535 | resp->usb_audio_spec_revision_valid = 1; |
Ajay Agarwal | 2a39f67 | 2017-04-11 11:58:28 +0530 | [diff] [blame] | 536 | } else if (protocol == UAC_VERSION_3) { |
| 537 | switch (le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize)) { |
| 538 | case BADD_MAXPSIZE_SYNC_MONO_16: |
| 539 | case BADD_MAXPSIZE_SYNC_STEREO_16: |
| 540 | case BADD_MAXPSIZE_ASYNC_MONO_16: |
| 541 | case BADD_MAXPSIZE_ASYNC_STEREO_16: { |
| 542 | resp->usb_audio_subslot_size = SUBSLOTSIZE_16_BIT; |
| 543 | break; |
| 544 | } |
| 545 | |
| 546 | case BADD_MAXPSIZE_SYNC_MONO_24: |
| 547 | case BADD_MAXPSIZE_SYNC_STEREO_24: |
| 548 | case BADD_MAXPSIZE_ASYNC_MONO_24: |
| 549 | case BADD_MAXPSIZE_ASYNC_STEREO_24: { |
| 550 | resp->usb_audio_subslot_size = SUBSLOTSIZE_24_BIT; |
| 551 | break; |
| 552 | } |
| 553 | |
| 554 | default: |
| 555 | pr_err("%d: %u: Invalid wMaxPacketSize\n", |
| 556 | subs->interface, subs->altset_idx); |
| 557 | ret = -EINVAL; |
| 558 | goto err; |
| 559 | } |
| 560 | resp->usb_audio_subslot_size_valid = 1; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 561 | } else { |
| 562 | pr_err("%s: unknown protocol version %x\n", __func__, protocol); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 563 | ret = -ENODEV; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 564 | goto err; |
| 565 | } |
| 566 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 567 | resp->slot_id = subs->dev->slot_id; |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 568 | resp->slot_id_valid = 1; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 569 | |
| 570 | memcpy(&resp->std_as_opr_intf_desc, &alts->desc, sizeof(alts->desc)); |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 571 | resp->std_as_opr_intf_desc_valid = 1; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 572 | |
| 573 | ep = usb_pipe_endpoint(subs->dev, subs->data_endpoint->pipe); |
| 574 | if (!ep) { |
| 575 | pr_err("%s: data ep # %d context is null\n", __func__, |
| 576 | subs->data_endpoint->ep_num); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 577 | ret = -ENODEV; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 578 | goto err; |
| 579 | } |
Hemant Kumar | c08fda6 | 2017-11-14 20:20:04 -0800 | [diff] [blame] | 580 | data_ep_pipe = subs->data_endpoint->pipe; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 581 | memcpy(&resp->std_as_data_ep_desc, &ep->desc, sizeof(ep->desc)); |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 582 | resp->std_as_data_ep_desc_valid = 1; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 583 | |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 584 | tr_data_pa = usb_get_xfer_ring_phys_addr(subs->dev, ep, &dma); |
| 585 | if (!tr_data_pa) { |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 586 | pr_err("%s:failed to get data ep ring dma address\n", __func__); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 587 | ret = -ENODEV; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 588 | goto err; |
| 589 | } |
| 590 | |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 591 | resp->xhci_mem_info.tr_data.pa = dma; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 592 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 593 | if (subs->sync_endpoint) { |
| 594 | ep = usb_pipe_endpoint(subs->dev, subs->sync_endpoint->pipe); |
| 595 | if (!ep) { |
Hemant Kumar | 44cefc5 | 2016-12-06 18:34:40 -0800 | [diff] [blame] | 596 | pr_debug("%s: implicit fb on data ep\n", __func__); |
| 597 | goto skip_sync_ep; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 598 | } |
Hemant Kumar | c08fda6 | 2017-11-14 20:20:04 -0800 | [diff] [blame] | 599 | sync_ep_pipe = subs->sync_endpoint->pipe; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 600 | memcpy(&resp->std_as_sync_ep_desc, &ep->desc, sizeof(ep->desc)); |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 601 | resp->std_as_sync_ep_desc_valid = 1; |
| 602 | |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 603 | tr_sync_pa = usb_get_xfer_ring_phys_addr(subs->dev, ep, &dma); |
| 604 | if (!tr_sync_pa) { |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 605 | pr_err("%s:failed to get sync ep ring dma address\n", |
| 606 | __func__); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 607 | ret = -ENODEV; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 608 | goto err; |
| 609 | } |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 610 | resp->xhci_mem_info.tr_sync.pa = dma; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 611 | } |
| 612 | |
Hemant Kumar | 44cefc5 | 2016-12-06 18:34:40 -0800 | [diff] [blame] | 613 | skip_sync_ep: |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 614 | resp->interrupter_num = uaudio_qdev->intr_num; |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 615 | resp->interrupter_num_valid = 1; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 616 | |
Hemant Kumar | 746cc97 | 2017-08-17 17:34:05 -0700 | [diff] [blame] | 617 | ret = usb_get_controller_id(subs->dev); |
| 618 | if (ret < 0) |
| 619 | goto err; |
| 620 | |
| 621 | resp->controller_num = ret; |
| 622 | resp->controller_num_valid = 1; |
| 623 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 624 | /* map xhci data structures PA memory to iova */ |
| 625 | |
| 626 | /* event ring */ |
| 627 | ret = usb_sec_event_ring_setup(subs->dev, resp->interrupter_num); |
| 628 | if (ret) { |
| 629 | pr_err("%s: failed to setup sec event ring ret %d\n", __func__, |
| 630 | ret); |
| 631 | goto err; |
| 632 | } |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 633 | |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 634 | xhci_pa = usb_get_sec_event_ring_phys_addr(subs->dev, |
| 635 | resp->interrupter_num, &dma); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 636 | if (!xhci_pa) { |
| 637 | pr_err("%s: failed to get sec event ring dma address\n", |
| 638 | __func__); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 639 | ret = -ENODEV; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 640 | goto err; |
| 641 | } |
| 642 | |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 643 | va = uaudio_iommu_map(MEM_EVENT_RING, xhci_pa, PAGE_SIZE, NULL); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 644 | if (!va) { |
| 645 | ret = -ENOMEM; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 646 | goto err; |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 647 | } |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 648 | |
| 649 | resp->xhci_mem_info.evt_ring.va = PREPEND_SID_TO_IOVA(va, |
| 650 | uaudio_qdev->sid); |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 651 | resp->xhci_mem_info.evt_ring.pa = dma; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 652 | resp->xhci_mem_info.evt_ring.size = PAGE_SIZE; |
Liangliang Lu | 0ae5cc3 | 2018-07-17 13:26:46 +0800 | [diff] [blame] | 653 | uaudio_qdev->er_mapped = true; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 654 | |
Hemant Kumar | 81156ed | 2017-09-22 12:34:52 -0700 | [diff] [blame] | 655 | resp->speed_info = get_speed_info(subs->dev->speed); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 656 | if (resp->speed_info == USB_AUDIO_DEVICE_SPEED_INVALID_V01) { |
| 657 | ret = -ENODEV; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 658 | goto unmap_er; |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 659 | } |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 660 | |
Hemant Kumar | 81156ed | 2017-09-22 12:34:52 -0700 | [diff] [blame] | 661 | resp->speed_info_valid = 1; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 662 | |
| 663 | /* data transfer ring */ |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 664 | va = uaudio_iommu_map(MEM_XFER_RING, tr_data_pa, PAGE_SIZE, NULL); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 665 | if (!va) { |
| 666 | ret = -ENOMEM; |
Hemant Kumar | 81156ed | 2017-09-22 12:34:52 -0700 | [diff] [blame] | 667 | goto unmap_er; |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 668 | } |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 669 | |
| 670 | tr_data_va = va; |
| 671 | resp->xhci_mem_info.tr_data.va = PREPEND_SID_TO_IOVA(va, |
| 672 | uaudio_qdev->sid); |
| 673 | resp->xhci_mem_info.tr_data.size = PAGE_SIZE; |
| 674 | |
| 675 | /* sync transfer ring */ |
| 676 | if (!resp->xhci_mem_info.tr_sync.pa) |
| 677 | goto skip_sync; |
| 678 | |
| 679 | xhci_pa = resp->xhci_mem_info.tr_sync.pa; |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 680 | va = uaudio_iommu_map(MEM_XFER_RING, tr_sync_pa, PAGE_SIZE, NULL); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 681 | if (!va) { |
| 682 | ret = -ENOMEM; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 683 | goto unmap_data; |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 684 | } |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 685 | |
| 686 | tr_sync_va = va; |
| 687 | resp->xhci_mem_info.tr_sync.va = PREPEND_SID_TO_IOVA(va, |
| 688 | uaudio_qdev->sid); |
| 689 | resp->xhci_mem_info.tr_sync.size = PAGE_SIZE; |
| 690 | |
| 691 | skip_sync: |
| 692 | /* xfer buffer, multiple of 4K only */ |
| 693 | if (!xfer_buf_len) |
| 694 | xfer_buf_len = PAGE_SIZE; |
| 695 | |
| 696 | mult = xfer_buf_len / PAGE_SIZE; |
| 697 | remainder = xfer_buf_len % PAGE_SIZE; |
| 698 | len = mult * PAGE_SIZE; |
| 699 | len += remainder ? PAGE_SIZE : 0; |
| 700 | |
| 701 | if (len > MAX_XFER_BUFF_LEN) { |
| 702 | pr_err("%s: req buf len %d > max buf len %lu, setting %lu\n", |
| 703 | __func__, len, MAX_XFER_BUFF_LEN, MAX_XFER_BUFF_LEN); |
| 704 | len = MAX_XFER_BUFF_LEN; |
| 705 | } |
| 706 | |
| 707 | xfer_buf = usb_alloc_coherent(subs->dev, len, GFP_KERNEL, &xfer_buf_pa); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 708 | if (!xfer_buf) { |
| 709 | ret = -ENOMEM; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 710 | goto unmap_sync; |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 711 | } |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 712 | |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 713 | dma_get_sgtable(subs->dev->bus->sysdev, &sgt, xfer_buf, xfer_buf_pa, |
| 714 | len); |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 715 | va = uaudio_iommu_map(MEM_XFER_BUF, xfer_buf_pa, len, &sgt); |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 716 | if (!va) { |
| 717 | ret = -ENOMEM; |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 718 | goto unmap_sync; |
Ajay Agarwal | bf276f9 | 2018-09-05 14:16:28 +0530 | [diff] [blame] | 719 | } |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 720 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 721 | resp->xhci_mem_info.xfer_buff.pa = xfer_buf_pa; |
| 722 | resp->xhci_mem_info.xfer_buff.size = len; |
| 723 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 724 | resp->xhci_mem_info.xfer_buff.va = PREPEND_SID_TO_IOVA(va, |
| 725 | uaudio_qdev->sid); |
| 726 | |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 727 | resp->xhci_mem_info_valid = 1; |
| 728 | |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 729 | sg_free_table(&sgt); |
| 730 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 731 | if (!atomic_read(&uadev[card_num].in_use)) { |
| 732 | kref_init(&uadev[card_num].kref); |
| 733 | init_waitqueue_head(&uadev[card_num].disconnect_wq); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 734 | uadev[card_num].num_intf = |
| 735 | subs->dev->config->desc.bNumInterfaces; |
| 736 | uadev[card_num].info = |
| 737 | kzalloc(sizeof(struct intf_info) * |
| 738 | uadev[card_num].num_intf, GFP_KERNEL); |
| 739 | if (!uadev[card_num].info) { |
| 740 | ret = -ENOMEM; |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 741 | goto unmap_sync; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 742 | } |
| 743 | uadev[card_num].udev = subs->dev; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 744 | atomic_set(&uadev[card_num].in_use, 1); |
| 745 | } else { |
| 746 | kref_get(&uadev[card_num].kref); |
| 747 | } |
| 748 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 749 | uadev[card_num].card_num = card_num; |
Hemant Kumar | c59cc94 | 2017-10-06 11:25:25 -0700 | [diff] [blame] | 750 | uadev[card_num].usb_core_id = resp->controller_num; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 751 | |
| 752 | /* cache intf specific info to use it for unmap and free xfer buf */ |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 753 | uadev[card_num].info[info_idx].data_xfer_ring_va = tr_data_va; |
| 754 | uadev[card_num].info[info_idx].data_xfer_ring_size = PAGE_SIZE; |
| 755 | uadev[card_num].info[info_idx].sync_xfer_ring_va = tr_sync_va; |
| 756 | uadev[card_num].info[info_idx].sync_xfer_ring_size = PAGE_SIZE; |
Hemant Kumar | 1346a80 | 2017-09-22 15:03:45 -0700 | [diff] [blame] | 757 | uadev[card_num].info[info_idx].xfer_buf_va = va; |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 758 | uadev[card_num].info[info_idx].xfer_buf_pa = xfer_buf_pa; |
| 759 | uadev[card_num].info[info_idx].xfer_buf_size = len; |
Hemant Kumar | c08fda6 | 2017-11-14 20:20:04 -0800 | [diff] [blame] | 760 | uadev[card_num].info[info_idx].data_ep_pipe = data_ep_pipe; |
| 761 | uadev[card_num].info[info_idx].sync_ep_pipe = sync_ep_pipe; |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 762 | uadev[card_num].info[info_idx].xfer_buf = xfer_buf; |
| 763 | uadev[card_num].info[info_idx].pcm_card_num = card_num; |
| 764 | uadev[card_num].info[info_idx].pcm_dev_num = pcm_dev_num; |
| 765 | uadev[card_num].info[info_idx].direction = subs->direction; |
| 766 | uadev[card_num].info[info_idx].intf_num = subs->interface; |
| 767 | uadev[card_num].info[info_idx].in_use = true; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 768 | |
| 769 | set_bit(card_num, &uaudio_qdev->card_slot); |
| 770 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 771 | return 0; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 772 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 773 | unmap_sync: |
| 774 | usb_free_coherent(subs->dev, len, xfer_buf, xfer_buf_pa); |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 775 | uaudio_iommu_unmap(MEM_XFER_RING, tr_sync_va, PAGE_SIZE, PAGE_SIZE); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 776 | unmap_data: |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 777 | uaudio_iommu_unmap(MEM_XFER_RING, tr_data_va, PAGE_SIZE, PAGE_SIZE); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 778 | unmap_er: |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 779 | uaudio_iommu_unmap(MEM_EVENT_RING, IOVA_BASE, PAGE_SIZE, PAGE_SIZE); |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 780 | err: |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 781 | return ret; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 782 | } |
| 783 | |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 784 | static void uaudio_dev_intf_cleanup(struct usb_device *udev, |
| 785 | struct intf_info *info) |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 786 | { |
Hemant Kumar | c08fda6 | 2017-11-14 20:20:04 -0800 | [diff] [blame] | 787 | |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 788 | uaudio_iommu_unmap(MEM_XFER_RING, info->data_xfer_ring_va, |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 789 | info->data_xfer_ring_size, info->data_xfer_ring_size); |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 790 | info->data_xfer_ring_va = 0; |
| 791 | info->data_xfer_ring_size = 0; |
| 792 | |
| 793 | uaudio_iommu_unmap(MEM_XFER_RING, info->sync_xfer_ring_va, |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 794 | info->sync_xfer_ring_size, info->sync_xfer_ring_size); |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 795 | info->sync_xfer_ring_va = 0; |
| 796 | info->sync_xfer_ring_size = 0; |
| 797 | |
| 798 | uaudio_iommu_unmap(MEM_XFER_BUF, info->xfer_buf_va, |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 799 | info->xfer_buf_size, info->xfer_buf_size); |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 800 | info->xfer_buf_va = 0; |
| 801 | |
| 802 | usb_free_coherent(udev, info->xfer_buf_size, |
| 803 | info->xfer_buf, info->xfer_buf_pa); |
| 804 | info->xfer_buf_size = 0; |
| 805 | info->xfer_buf = NULL; |
| 806 | info->xfer_buf_pa = 0; |
| 807 | |
| 808 | info->in_use = false; |
| 809 | } |
| 810 | |
| 811 | static void uaudio_dev_cleanup(struct uaudio_dev *dev) |
| 812 | { |
| 813 | int if_idx; |
| 814 | |
| 815 | /* free xfer buffer and unmap xfer ring and buf per interface */ |
| 816 | for (if_idx = 0; if_idx < dev->num_intf; if_idx++) { |
| 817 | if (!dev->info[if_idx].in_use) |
| 818 | continue; |
| 819 | uaudio_dev_intf_cleanup(dev->udev, &dev->info[if_idx]); |
| 820 | pr_debug("%s: release resources: intf# %d card# %d\n", __func__, |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 821 | dev->info[if_idx].intf_num, dev->card_num); |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 822 | } |
| 823 | |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 824 | dev->num_intf = 0; |
| 825 | |
| 826 | /* free interface info */ |
| 827 | kfree(dev->info); |
| 828 | dev->info = NULL; |
| 829 | |
| 830 | clear_bit(dev->card_num, &uaudio_qdev->card_slot); |
| 831 | |
| 832 | /* all audio devices are disconnected */ |
| 833 | if (!uaudio_qdev->card_slot) { |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 834 | uaudio_iommu_unmap(MEM_EVENT_RING, IOVA_BASE, PAGE_SIZE, |
| 835 | PAGE_SIZE); |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 836 | usb_sec_event_ring_cleanup(dev->udev, uaudio_qdev->intr_num); |
| 837 | pr_debug("%s: all audio devices disconnected\n", __func__); |
| 838 | } |
| 839 | |
| 840 | dev->udev = NULL; |
| 841 | } |
| 842 | |
| 843 | static void uaudio_disconnect_cb(struct snd_usb_audio *chip) |
| 844 | { |
| 845 | int ret; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 846 | struct uaudio_dev *dev; |
| 847 | int card_num = chip->card_num; |
Vamsi Krishna Samavedam | 1e63453 | 2016-09-13 14:09:37 -0700 | [diff] [blame] | 848 | struct uaudio_qmi_svc *svc = uaudio_svc; |
| 849 | struct qmi_uaudio_stream_ind_msg_v01 disconnect_ind = {0}; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 850 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 851 | pr_debug("%s: for card# %d\n", __func__, card_num); |
| 852 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 853 | if (card_num >= SNDRV_CARDS) { |
| 854 | pr_err("%s: invalid card number\n", __func__); |
Vamsi Krishna Samavedam | 1e63453 | 2016-09-13 14:09:37 -0700 | [diff] [blame] | 855 | return; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 856 | } |
| 857 | |
Vamsi Krishna Samavedam | 1e63453 | 2016-09-13 14:09:37 -0700 | [diff] [blame] | 858 | mutex_lock(&chip->dev_lock); |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 859 | dev = &uadev[card_num]; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 860 | |
| 861 | /* clean up */ |
| 862 | if (!dev->udev) { |
| 863 | pr_debug("%s: no clean up required\n", __func__); |
| 864 | goto done; |
| 865 | } |
| 866 | |
Vamsi Krishna Samavedam | 1e63453 | 2016-09-13 14:09:37 -0700 | [diff] [blame] | 867 | if (atomic_read(&dev->in_use)) { |
| 868 | mutex_unlock(&chip->dev_lock); |
| 869 | |
| 870 | pr_debug("%s: sending qmi indication disconnect\n", __func__); |
| 871 | disconnect_ind.dev_event = USB_AUDIO_DEV_DISCONNECT_V01; |
| 872 | disconnect_ind.slot_id = dev->udev->slot_id; |
Hemant Kumar | c59cc94 | 2017-10-06 11:25:25 -0700 | [diff] [blame] | 873 | disconnect_ind.controller_num = dev->usb_core_id; |
| 874 | disconnect_ind.controller_num_valid = 1; |
Vamsi Krishna Samavedam | 1e63453 | 2016-09-13 14:09:37 -0700 | [diff] [blame] | 875 | ret = qmi_send_ind(svc->uaudio_svc_hdl, svc->curr_conn, |
| 876 | &uaudio_stream_ind_desc, &disconnect_ind, |
| 877 | sizeof(disconnect_ind)); |
| 878 | if (ret < 0) { |
| 879 | pr_err("%s: qmi send failed wiht err: %d\n", |
| 880 | __func__, ret); |
| 881 | return; |
| 882 | } |
| 883 | |
| 884 | ret = wait_event_interruptible(dev->disconnect_wq, |
| 885 | !atomic_read(&dev->in_use)); |
| 886 | if (ret < 0) { |
| 887 | pr_debug("%s: failed with ret %d\n", __func__, ret); |
| 888 | return; |
| 889 | } |
| 890 | mutex_lock(&chip->dev_lock); |
| 891 | } |
| 892 | |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 893 | uaudio_dev_cleanup(dev); |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 894 | done: |
| 895 | mutex_unlock(&chip->dev_lock); |
| 896 | } |
| 897 | |
| 898 | static void uaudio_dev_release(struct kref *kref) |
| 899 | { |
| 900 | struct uaudio_dev *dev = container_of(kref, struct uaudio_dev, kref); |
| 901 | |
Vamsi Krishna Samavedam | 0836aae | 2016-11-03 17:21:02 -0700 | [diff] [blame] | 902 | pr_debug("%s for dev %pK\n", __func__, dev); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 903 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 904 | atomic_set(&dev->in_use, 0); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 905 | |
| 906 | clear_bit(dev->card_num, &uaudio_qdev->card_slot); |
| 907 | |
| 908 | /* all audio devices are disconnected */ |
| 909 | if (!uaudio_qdev->card_slot) { |
| 910 | usb_sec_event_ring_cleanup(dev->udev, uaudio_qdev->intr_num); |
Hemant Kumar | 068cf61 | 2018-01-12 15:59:10 -0800 | [diff] [blame] | 911 | uaudio_iommu_unmap(MEM_EVENT_RING, IOVA_BASE, PAGE_SIZE, |
| 912 | PAGE_SIZE); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 913 | pr_debug("%s: all audio devices disconnected\n", __func__); |
| 914 | } |
| 915 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 916 | wake_up(&dev->disconnect_wq); |
| 917 | } |
| 918 | |
Hemant Kumar | a4f6101 | 2016-10-13 15:41:55 -0700 | [diff] [blame] | 919 | /* maps audio format received over QMI to asound.h based pcm format */ |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 920 | static int map_pcm_format(unsigned int fmt_received) |
Hemant Kumar | a4f6101 | 2016-10-13 15:41:55 -0700 | [diff] [blame] | 921 | { |
| 922 | switch (fmt_received) { |
| 923 | case USB_QMI_PCM_FORMAT_S8: |
| 924 | return SNDRV_PCM_FORMAT_S8; |
| 925 | case USB_QMI_PCM_FORMAT_U8: |
| 926 | return SNDRV_PCM_FORMAT_U8; |
| 927 | case USB_QMI_PCM_FORMAT_S16_LE: |
| 928 | return SNDRV_PCM_FORMAT_S16_LE; |
| 929 | case USB_QMI_PCM_FORMAT_S16_BE: |
| 930 | return SNDRV_PCM_FORMAT_S16_BE; |
| 931 | case USB_QMI_PCM_FORMAT_U16_LE: |
| 932 | return SNDRV_PCM_FORMAT_U16_LE; |
| 933 | case USB_QMI_PCM_FORMAT_U16_BE: |
| 934 | return SNDRV_PCM_FORMAT_U16_BE; |
| 935 | case USB_QMI_PCM_FORMAT_S24_LE: |
| 936 | return SNDRV_PCM_FORMAT_S24_LE; |
| 937 | case USB_QMI_PCM_FORMAT_S24_BE: |
| 938 | return SNDRV_PCM_FORMAT_S24_BE; |
| 939 | case USB_QMI_PCM_FORMAT_U24_LE: |
| 940 | return SNDRV_PCM_FORMAT_U24_LE; |
| 941 | case USB_QMI_PCM_FORMAT_U24_BE: |
| 942 | return SNDRV_PCM_FORMAT_U24_BE; |
| 943 | case USB_QMI_PCM_FORMAT_S24_3LE: |
| 944 | return SNDRV_PCM_FORMAT_S24_3LE; |
| 945 | case USB_QMI_PCM_FORMAT_S24_3BE: |
| 946 | return SNDRV_PCM_FORMAT_S24_3BE; |
| 947 | case USB_QMI_PCM_FORMAT_U24_3LE: |
| 948 | return SNDRV_PCM_FORMAT_U24_3LE; |
| 949 | case USB_QMI_PCM_FORMAT_U24_3BE: |
| 950 | return SNDRV_PCM_FORMAT_U24_3BE; |
| 951 | case USB_QMI_PCM_FORMAT_S32_LE: |
| 952 | return SNDRV_PCM_FORMAT_S32_LE; |
| 953 | case USB_QMI_PCM_FORMAT_S32_BE: |
| 954 | return SNDRV_PCM_FORMAT_S32_BE; |
| 955 | case USB_QMI_PCM_FORMAT_U32_LE: |
| 956 | return SNDRV_PCM_FORMAT_U32_LE; |
| 957 | case USB_QMI_PCM_FORMAT_U32_BE: |
| 958 | return SNDRV_PCM_FORMAT_U32_BE; |
| 959 | default: |
| 960 | return -EINVAL; |
| 961 | } |
| 962 | } |
| 963 | |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 964 | static int info_idx_from_ifnum(int card_num, int intf_num, bool enable) |
| 965 | { |
| 966 | int i; |
| 967 | |
| 968 | /* |
| 969 | * default index 0 is used when info is allocated upon |
| 970 | * first enable audio stream req for a pcm device |
| 971 | */ |
| 972 | if (enable && !uadev[card_num].info) |
| 973 | return 0; |
| 974 | |
| 975 | for (i = 0; i < uadev[card_num].num_intf; i++) { |
| 976 | if (enable && !uadev[card_num].info[i].in_use) |
| 977 | return i; |
| 978 | else if (!enable && |
| 979 | uadev[card_num].info[i].intf_num == intf_num) |
| 980 | return i; |
| 981 | } |
| 982 | |
| 983 | return -EINVAL; |
| 984 | } |
| 985 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 986 | static int handle_uaudio_stream_req(void *req_h, void *req) |
| 987 | { |
| 988 | struct qmi_uaudio_stream_req_msg_v01 *req_msg; |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 989 | struct qmi_uaudio_stream_resp_msg_v01 resp = {{0}, 0}; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 990 | struct snd_usb_substream *subs; |
| 991 | struct snd_usb_audio *chip = NULL; |
| 992 | struct uaudio_qmi_svc *svc = uaudio_svc; |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 993 | struct intf_info *info; |
Hemant Kumar | e502048 | 2018-03-05 18:01:22 -0800 | [diff] [blame] | 994 | struct usb_host_endpoint *ep; |
Hemant Kumar | a4f6101 | 2016-10-13 15:41:55 -0700 | [diff] [blame] | 995 | int pcm_format; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 996 | u8 pcm_card_num, pcm_dev_num, direction; |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 997 | int info_idx = -EINVAL, ret = 0; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 998 | |
| 999 | req_msg = (struct qmi_uaudio_stream_req_msg_v01 *)req; |
| 1000 | |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 1001 | if (!req_msg->audio_format_valid || !req_msg->bit_rate_valid || |
| 1002 | !req_msg->number_of_ch_valid || !req_msg->xfer_buff_size_valid) { |
| 1003 | pr_err("%s: invalid request msg\n", __func__); |
| 1004 | ret = -EINVAL; |
| 1005 | goto response; |
| 1006 | } |
| 1007 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1008 | direction = req_msg->usb_token & SND_PCM_STREAM_DIRECTION; |
| 1009 | pcm_dev_num = (req_msg->usb_token & SND_PCM_DEV_NUM_MASK) >> 8; |
| 1010 | pcm_card_num = (req_msg->usb_token & SND_PCM_CARD_NUM_MASK) >> 16; |
| 1011 | |
| 1012 | pr_debug("%s:card#:%d dev#:%d dir:%d en:%d fmt:%d rate:%d #ch:%d\n", |
| 1013 | __func__, pcm_card_num, pcm_dev_num, direction, req_msg->enable, |
| 1014 | req_msg->audio_format, req_msg->bit_rate, |
| 1015 | req_msg->number_of_ch); |
| 1016 | |
| 1017 | if (pcm_card_num >= SNDRV_CARDS) { |
| 1018 | pr_err("%s: invalid card # %u", __func__, pcm_card_num); |
| 1019 | ret = -EINVAL; |
| 1020 | goto response; |
| 1021 | } |
| 1022 | |
Hemant Kumar | a4f6101 | 2016-10-13 15:41:55 -0700 | [diff] [blame] | 1023 | pcm_format = map_pcm_format(req_msg->audio_format); |
| 1024 | if (pcm_format == -EINVAL) { |
| 1025 | pr_err("%s: unsupported pcm format received %d\n", |
| 1026 | __func__, req_msg->audio_format); |
| 1027 | ret = -EINVAL; |
| 1028 | goto response; |
| 1029 | } |
| 1030 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1031 | subs = find_snd_usb_substream(pcm_card_num, pcm_dev_num, direction, |
| 1032 | &chip, uaudio_disconnect_cb); |
| 1033 | if (!subs || !chip || atomic_read(&chip->shutdown)) { |
| 1034 | pr_err("%s: can't find substream for card# %u, dev# %u dir%u\n", |
| 1035 | __func__, pcm_card_num, pcm_dev_num, direction); |
| 1036 | ret = -ENODEV; |
| 1037 | goto response; |
| 1038 | } |
| 1039 | |
| 1040 | mutex_lock(&chip->dev_lock); |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 1041 | info_idx = info_idx_from_ifnum(pcm_card_num, subs->interface, |
| 1042 | req_msg->enable); |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1043 | if (atomic_read(&chip->shutdown) || !subs->stream || !subs->stream->pcm |
| 1044 | || !subs->stream->chip) { |
| 1045 | ret = -ENODEV; |
| 1046 | mutex_unlock(&chip->dev_lock); |
| 1047 | goto response; |
| 1048 | } |
| 1049 | |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 1050 | if (req_msg->enable) { |
| 1051 | if (info_idx < 0) { |
| 1052 | pr_err("%s interface# %d already in use card# %d\n", |
| 1053 | __func__, subs->interface, pcm_card_num); |
| 1054 | ret = -EBUSY; |
| 1055 | mutex_unlock(&chip->dev_lock); |
| 1056 | goto response; |
| 1057 | } |
| 1058 | } |
| 1059 | |
Hemant Kumar | a4f6101 | 2016-10-13 15:41:55 -0700 | [diff] [blame] | 1060 | subs->pcm_format = pcm_format; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1061 | subs->channels = req_msg->number_of_ch; |
| 1062 | subs->cur_rate = req_msg->bit_rate; |
Hemant Kumar | e1578ed | 2016-12-14 13:19:40 -0800 | [diff] [blame] | 1063 | uadev[pcm_card_num].ctrl_intf = chip->ctrl_intf; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1064 | |
Hemant Kumar | e502048 | 2018-03-05 18:01:22 -0800 | [diff] [blame] | 1065 | if (!req_msg->enable) { |
| 1066 | info = &uadev[pcm_card_num].info[info_idx]; |
| 1067 | if (info->data_ep_pipe) { |
| 1068 | ep = usb_pipe_endpoint(uadev[pcm_card_num].udev, |
| 1069 | info->data_ep_pipe); |
| 1070 | if (!ep) |
| 1071 | pr_debug("%s: no data ep\n", __func__); |
| 1072 | else |
| 1073 | usb_stop_endpoint(uadev[pcm_card_num].udev, ep); |
| 1074 | info->data_ep_pipe = 0; |
| 1075 | } |
| 1076 | |
| 1077 | if (info->sync_ep_pipe) { |
| 1078 | ep = usb_pipe_endpoint(uadev[pcm_card_num].udev, |
| 1079 | info->sync_ep_pipe); |
| 1080 | if (!ep) |
| 1081 | pr_debug("%s: no sync ep\n", __func__); |
| 1082 | else |
| 1083 | usb_stop_endpoint(uadev[pcm_card_num].udev, ep); |
| 1084 | info->sync_ep_pipe = 0; |
| 1085 | } |
| 1086 | } |
| 1087 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1088 | ret = snd_usb_enable_audio_stream(subs, req_msg->enable); |
| 1089 | |
| 1090 | if (!ret && req_msg->enable) |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 1091 | ret = prepare_qmi_response(subs, req_msg, &resp, info_idx); |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1092 | |
| 1093 | mutex_unlock(&chip->dev_lock); |
| 1094 | |
| 1095 | response: |
| 1096 | if (!req_msg->enable && ret != -EINVAL) { |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 1097 | if (info_idx >= 0) { |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 1098 | mutex_lock(&chip->dev_lock); |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 1099 | info = &uadev[pcm_card_num].info[info_idx]; |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 1100 | uaudio_dev_intf_cleanup(uadev[pcm_card_num].udev, info); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 1101 | pr_debug("%s:release resources: intf# %d card# %d\n", |
Hemant Kumar | ebbe626 | 2017-01-10 19:26:40 -0800 | [diff] [blame] | 1102 | __func__, subs->interface, pcm_card_num); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 1103 | mutex_unlock(&chip->dev_lock); |
| 1104 | } |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1105 | if (atomic_read(&uadev[pcm_card_num].in_use)) |
| 1106 | kref_put(&uadev[pcm_card_num].kref, |
| 1107 | uaudio_dev_release); |
| 1108 | } |
| 1109 | |
Hemant Kumar | aa2fa3c | 2016-07-18 16:26:48 -0700 | [diff] [blame] | 1110 | resp.usb_token = req_msg->usb_token; |
| 1111 | resp.usb_token_valid = 1; |
| 1112 | resp.internal_status = ret; |
| 1113 | resp.internal_status_valid = 1; |
| 1114 | resp.status = ret ? USB_AUDIO_STREAM_REQ_FAILURE_V01 : ret; |
| 1115 | resp.status_valid = 1; |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1116 | ret = qmi_send_resp_from_cb(svc->uaudio_svc_hdl, svc->curr_conn, req_h, |
| 1117 | &uaudio_stream_resp_desc, &resp, sizeof(resp)); |
| 1118 | |
| 1119 | svc->t_resp_sent = ktime_get(); |
| 1120 | |
| 1121 | pr_debug("%s: t_resp sent - t_req recvd (in ms) %lld\n", __func__, |
| 1122 | ktime_to_ms(ktime_sub(svc->t_resp_sent, svc->t_request_recvd))); |
| 1123 | |
| 1124 | return ret; |
| 1125 | } |
| 1126 | |
| 1127 | static int uaudio_qmi_svc_connect_cb(struct qmi_handle *handle, |
| 1128 | void *conn_h) |
| 1129 | { |
| 1130 | struct uaudio_qmi_svc *svc = uaudio_svc; |
| 1131 | |
| 1132 | if (svc->uaudio_svc_hdl != handle || !conn_h) { |
| 1133 | pr_err("%s: handle mismatch\n", __func__); |
| 1134 | return -EINVAL; |
| 1135 | } |
| 1136 | if (svc->curr_conn) { |
| 1137 | pr_err("%s: Service is busy\n", __func__); |
| 1138 | return -ECONNREFUSED; |
| 1139 | } |
| 1140 | svc->curr_conn = conn_h; |
| 1141 | return 0; |
| 1142 | } |
| 1143 | |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 1144 | static void uaudio_qmi_disconnect_work(struct work_struct *w) |
| 1145 | { |
| 1146 | struct intf_info *info; |
| 1147 | int idx, if_idx; |
| 1148 | struct snd_usb_substream *subs; |
| 1149 | struct snd_usb_audio *chip = NULL; |
| 1150 | |
| 1151 | /* find all active intf for set alt 0 and cleanup usb audio dev */ |
| 1152 | for (idx = 0; idx < SNDRV_CARDS; idx++) { |
| 1153 | if (!atomic_read(&uadev[idx].in_use)) |
| 1154 | continue; |
| 1155 | |
| 1156 | for (if_idx = 0; if_idx < uadev[idx].num_intf; if_idx++) { |
| 1157 | if (!uadev[idx].info || !uadev[idx].info[if_idx].in_use) |
| 1158 | continue; |
| 1159 | info = &uadev[idx].info[if_idx]; |
| 1160 | subs = find_snd_usb_substream(info->pcm_card_num, |
| 1161 | info->pcm_dev_num, |
| 1162 | info->direction, |
| 1163 | &chip, |
| 1164 | uaudio_disconnect_cb); |
| 1165 | if (!subs || !chip || atomic_read(&chip->shutdown)) { |
| 1166 | pr_debug("%s:no subs for c#%u, dev#%u dir%u\n", |
| 1167 | __func__, info->pcm_card_num, |
| 1168 | info->pcm_dev_num, |
| 1169 | info->direction); |
| 1170 | continue; |
| 1171 | } |
| 1172 | snd_usb_enable_audio_stream(subs, 0); |
| 1173 | } |
| 1174 | atomic_set(&uadev[idx].in_use, 0); |
| 1175 | mutex_lock(&chip->dev_lock); |
| 1176 | uaudio_dev_cleanup(&uadev[idx]); |
| 1177 | mutex_unlock(&chip->dev_lock); |
| 1178 | } |
| 1179 | } |
| 1180 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1181 | static int uaudio_qmi_svc_disconnect_cb(struct qmi_handle *handle, |
| 1182 | void *conn_h) |
| 1183 | { |
| 1184 | struct uaudio_qmi_svc *svc = uaudio_svc; |
| 1185 | |
| 1186 | if (svc->uaudio_svc_hdl != handle || svc->curr_conn != conn_h) { |
| 1187 | pr_err("%s: handle mismatch\n", __func__); |
| 1188 | return -EINVAL; |
| 1189 | } |
| 1190 | |
| 1191 | svc->curr_conn = NULL; |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 1192 | queue_work(svc->uaudio_wq, &svc->qmi_disconnect_work); |
| 1193 | |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1194 | return 0; |
| 1195 | } |
| 1196 | |
| 1197 | static int uaudio_qmi_svc_req_cb(struct qmi_handle *handle, void *conn_h, |
| 1198 | void *req_h, unsigned int msg_id, void *req) |
| 1199 | { |
| 1200 | int ret; |
| 1201 | struct uaudio_qmi_svc *svc = uaudio_svc; |
| 1202 | |
| 1203 | if (svc->uaudio_svc_hdl != handle || svc->curr_conn != conn_h) { |
| 1204 | pr_err("%s: handle mismatch\n", __func__); |
| 1205 | return -EINVAL; |
| 1206 | } |
| 1207 | |
| 1208 | switch (msg_id) { |
| 1209 | case QMI_UAUDIO_STREAM_REQ_V01: |
| 1210 | ret = handle_uaudio_stream_req(req_h, req); |
| 1211 | break; |
| 1212 | |
| 1213 | default: |
| 1214 | ret = -ENOTSUPP; |
| 1215 | break; |
| 1216 | } |
| 1217 | return ret; |
| 1218 | } |
| 1219 | |
| 1220 | static int uaudio_qmi_svc_req_desc_cb(unsigned int msg_id, |
| 1221 | struct msg_desc **req_desc) |
| 1222 | { |
| 1223 | int ret; |
| 1224 | |
| 1225 | pr_debug("%s: msg_id %d\n", __func__, msg_id); |
| 1226 | |
| 1227 | switch (msg_id) { |
| 1228 | case QMI_UAUDIO_STREAM_REQ_V01: |
| 1229 | *req_desc = &uaudio_stream_req_desc; |
| 1230 | ret = sizeof(struct qmi_uaudio_stream_req_msg_v01); |
| 1231 | break; |
| 1232 | |
| 1233 | default: |
| 1234 | ret = -ENOTSUPP; |
| 1235 | break; |
| 1236 | } |
| 1237 | return ret; |
| 1238 | } |
| 1239 | |
| 1240 | static void uaudio_qmi_svc_recv_msg(struct work_struct *w) |
| 1241 | { |
| 1242 | int ret; |
| 1243 | struct uaudio_qmi_svc *svc = container_of(w, struct uaudio_qmi_svc, |
| 1244 | recv_msg_work); |
| 1245 | |
| 1246 | do { |
| 1247 | pr_debug("%s: Notified about a Receive Event", __func__); |
| 1248 | } while ((ret = qmi_recv_msg(svc->uaudio_svc_hdl)) == 0); |
| 1249 | |
| 1250 | if (ret != -ENOMSG) |
| 1251 | pr_err("%s: Error receiving message\n", __func__); |
| 1252 | } |
| 1253 | |
| 1254 | static void uaudio_qmi_svc_ntfy(struct qmi_handle *handle, |
| 1255 | enum qmi_event_type event, void *priv) |
| 1256 | { |
| 1257 | struct uaudio_qmi_svc *svc = uaudio_svc; |
| 1258 | |
| 1259 | pr_debug("%s: event %d", __func__, event); |
| 1260 | |
| 1261 | svc->t_request_recvd = ktime_get(); |
| 1262 | |
| 1263 | switch (event) { |
| 1264 | case QMI_RECV_MSG: |
| 1265 | queue_work(svc->uaudio_wq, &svc->recv_msg_work); |
| 1266 | break; |
| 1267 | default: |
| 1268 | break; |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | static struct qmi_svc_ops_options uaudio_svc_ops_options = { |
| 1273 | .version = 1, |
| 1274 | .service_id = UAUDIO_STREAM_SERVICE_ID_V01, |
| 1275 | .service_vers = UAUDIO_STREAM_SERVICE_VERS_V01, |
| 1276 | .connect_cb = uaudio_qmi_svc_connect_cb, |
| 1277 | .disconnect_cb = uaudio_qmi_svc_disconnect_cb, |
| 1278 | .req_desc_cb = uaudio_qmi_svc_req_desc_cb, |
| 1279 | .req_cb = uaudio_qmi_svc_req_cb, |
| 1280 | }; |
| 1281 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 1282 | static int uaudio_qmi_plat_probe(struct platform_device *pdev) |
| 1283 | { |
| 1284 | int ret; |
| 1285 | struct device_node *node = pdev->dev.of_node; |
| 1286 | |
| 1287 | uaudio_qdev = devm_kzalloc(&pdev->dev, sizeof(struct uaudio_qmi_dev), |
| 1288 | GFP_KERNEL); |
| 1289 | if (!uaudio_qdev) |
| 1290 | return -ENOMEM; |
| 1291 | |
| 1292 | uaudio_qdev->dev = &pdev->dev; |
| 1293 | |
| 1294 | ret = of_property_read_u32(node, "qcom,usb-audio-stream-id", |
| 1295 | &uaudio_qdev->sid); |
| 1296 | if (ret) { |
| 1297 | dev_err(&pdev->dev, "failed to read sid.\n"); |
| 1298 | return -ENODEV; |
| 1299 | } |
| 1300 | |
| 1301 | ret = of_property_read_u32(node, "qcom,usb-audio-intr-num", |
| 1302 | &uaudio_qdev->intr_num); |
| 1303 | if (ret) { |
| 1304 | dev_err(&pdev->dev, "failed to read intr num.\n"); |
| 1305 | return -ENODEV; |
| 1306 | } |
| 1307 | |
| 1308 | uaudio_qdev->domain = iommu_domain_alloc(pdev->dev.bus); |
Hemant Kumar | a2a8091 | 2016-08-22 19:31:35 -0700 | [diff] [blame] | 1309 | if (!uaudio_qdev->domain) { |
| 1310 | dev_err(&pdev->dev, "failed to allocate iommu domain\n"); |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 1311 | return -ENODEV; |
| 1312 | } |
| 1313 | |
| 1314 | /* attach to external processor iommu */ |
| 1315 | ret = iommu_attach_device(uaudio_qdev->domain, &pdev->dev); |
| 1316 | if (ret) { |
| 1317 | dev_err(&pdev->dev, "failed to attach device ret = %d\n", ret); |
| 1318 | goto free_domain; |
| 1319 | } |
| 1320 | |
Hemant Kumar | 81156ed | 2017-09-22 12:34:52 -0700 | [diff] [blame] | 1321 | /* initialize xfer ring and xfer buf iova list */ |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 1322 | INIT_LIST_HEAD(&uaudio_qdev->xfer_ring_list); |
| 1323 | uaudio_qdev->curr_xfer_ring_iova = IOVA_XFER_RING_BASE; |
| 1324 | uaudio_qdev->xfer_ring_iova_size = |
| 1325 | IOVA_XFER_RING_MAX - IOVA_XFER_RING_BASE; |
| 1326 | |
| 1327 | INIT_LIST_HEAD(&uaudio_qdev->xfer_buf_list); |
| 1328 | uaudio_qdev->curr_xfer_buf_iova = IOVA_XFER_BUF_BASE; |
| 1329 | uaudio_qdev->xfer_buf_iova_size = |
| 1330 | IOVA_XFER_BUF_MAX - IOVA_XFER_BUF_BASE; |
| 1331 | |
| 1332 | return 0; |
| 1333 | |
| 1334 | free_domain: |
| 1335 | iommu_domain_free(uaudio_qdev->domain); |
| 1336 | return ret; |
| 1337 | } |
| 1338 | |
| 1339 | static int uaudio_qmi_plat_remove(struct platform_device *pdev) |
| 1340 | { |
| 1341 | iommu_detach_device(uaudio_qdev->domain, &pdev->dev); |
| 1342 | iommu_domain_free(uaudio_qdev->domain); |
| 1343 | uaudio_qdev->domain = NULL; |
| 1344 | |
| 1345 | return 0; |
| 1346 | } |
| 1347 | |
| 1348 | static const struct of_device_id of_uaudio_matach[] = { |
| 1349 | { |
| 1350 | .compatible = "qcom,usb-audio-qmi-dev", |
| 1351 | }, |
| 1352 | { }, |
| 1353 | }; |
| 1354 | MODULE_DEVICE_TABLE(of, of_uaudio_matach); |
| 1355 | |
| 1356 | static struct platform_driver uaudio_qmi_driver = { |
| 1357 | .probe = uaudio_qmi_plat_probe, |
| 1358 | .remove = uaudio_qmi_plat_remove, |
| 1359 | .driver = { |
| 1360 | .name = "uaudio-qmi", |
| 1361 | .of_match_table = of_uaudio_matach, |
| 1362 | }, |
| 1363 | }; |
| 1364 | |
| 1365 | static int uaudio_qmi_svc_init(void) |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1366 | { |
| 1367 | int ret; |
| 1368 | struct uaudio_qmi_svc *svc; |
| 1369 | |
| 1370 | svc = kzalloc(sizeof(struct uaudio_qmi_svc), GFP_KERNEL); |
| 1371 | if (!svc) |
| 1372 | return -ENOMEM; |
| 1373 | |
| 1374 | svc->uaudio_wq = create_singlethread_workqueue("uaudio_svc"); |
| 1375 | if (!svc->uaudio_wq) { |
| 1376 | ret = -ENOMEM; |
| 1377 | goto free_svc; |
| 1378 | } |
| 1379 | |
| 1380 | svc->uaudio_svc_hdl = qmi_handle_create(uaudio_qmi_svc_ntfy, NULL); |
| 1381 | if (!svc->uaudio_svc_hdl) { |
| 1382 | pr_err("%s: Error creating svc_hdl\n", __func__); |
| 1383 | ret = -EFAULT; |
| 1384 | goto destroy_uaudio_wq; |
| 1385 | } |
| 1386 | |
| 1387 | ret = qmi_svc_register(svc->uaudio_svc_hdl, &uaudio_svc_ops_options); |
| 1388 | if (ret < 0) { |
| 1389 | pr_err("%s:Error registering uaudio svc %d\n", __func__, ret); |
| 1390 | goto destroy_svc_handle; |
| 1391 | } |
| 1392 | |
| 1393 | INIT_WORK(&svc->recv_msg_work, uaudio_qmi_svc_recv_msg); |
Hemant Kumar | 89fa7b9 | 2016-10-27 19:56:31 -0700 | [diff] [blame] | 1394 | INIT_WORK(&svc->qmi_disconnect_work, uaudio_qmi_disconnect_work); |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1395 | |
| 1396 | uaudio_svc = svc; |
| 1397 | |
| 1398 | return 0; |
| 1399 | |
| 1400 | destroy_svc_handle: |
| 1401 | qmi_handle_destroy(svc->uaudio_svc_hdl); |
| 1402 | destroy_uaudio_wq: |
| 1403 | destroy_workqueue(svc->uaudio_wq); |
| 1404 | free_svc: |
| 1405 | kfree(svc); |
| 1406 | return ret; |
| 1407 | } |
| 1408 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 1409 | static void uaudio_qmi_svc_exit(void) |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1410 | { |
| 1411 | struct uaudio_qmi_svc *svc = uaudio_svc; |
| 1412 | |
| 1413 | qmi_svc_unregister(svc->uaudio_svc_hdl); |
| 1414 | flush_workqueue(svc->uaudio_wq); |
| 1415 | qmi_handle_destroy(svc->uaudio_svc_hdl); |
| 1416 | destroy_workqueue(svc->uaudio_wq); |
| 1417 | kfree(svc); |
| 1418 | uaudio_svc = NULL; |
| 1419 | } |
| 1420 | |
Hemant Kumar | d2a5450 | 2016-03-22 16:35:16 -0700 | [diff] [blame] | 1421 | static int __init uaudio_qmi_plat_init(void) |
| 1422 | { |
| 1423 | int ret; |
| 1424 | |
| 1425 | ret = platform_driver_register(&uaudio_qmi_driver); |
| 1426 | if (ret) |
| 1427 | return ret; |
| 1428 | |
| 1429 | return uaudio_qmi_svc_init(); |
| 1430 | } |
| 1431 | |
| 1432 | static void __exit uaudio_qmi_plat_exit(void) |
| 1433 | { |
| 1434 | uaudio_qmi_svc_exit(); |
| 1435 | platform_driver_unregister(&uaudio_qmi_driver); |
| 1436 | } |
| 1437 | |
| 1438 | module_init(uaudio_qmi_plat_init); |
| 1439 | module_exit(uaudio_qmi_plat_exit); |
Hemant Kumar | 0ef9fbb | 2016-01-28 11:41:42 -0800 | [diff] [blame] | 1440 | |
| 1441 | MODULE_DESCRIPTION("USB AUDIO QMI Service Driver"); |
| 1442 | MODULE_LICENSE("GPL v2"); |