Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2018, The Linux Foundation. All rights reserved. |
| 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 | #include <linux/debugfs.h> |
| 14 | #include <linux/export.h> |
| 15 | #include <linux/fs.h> |
| 16 | #include <linux/if_ether.h> |
| 17 | #include <linux/ioctl.h> |
| 18 | #include <linux/kernel.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/msm_ipa.h> |
| 21 | #include <linux/mutex.h> |
| 22 | #include <linux/skbuff.h> |
| 23 | #include <linux/types.h> |
| 24 | #include <linux/ipv6.h> |
| 25 | #include <net/addrconf.h> |
| 26 | #include <linux/ipa.h> |
| 27 | #include <linux/cdev.h> |
| 28 | #include <linux/ipa_odu_bridge.h> |
| 29 | #include "../ipa_common_i.h" |
| 30 | #ifdef CONFIG_IPA3 |
| 31 | #include "../ipa_v3/ipa_pm.h" |
| 32 | #endif |
| 33 | |
| 34 | #define IPA_GSB_DRV_NAME "ipa_gsb" |
| 35 | |
| 36 | #define MAX_SUPPORTED_IFACE 5 |
| 37 | |
| 38 | #define IPA_GSB_DBG(fmt, args...) \ |
| 39 | do { \ |
| 40 | pr_debug(IPA_GSB_DRV_NAME " %s:%d " fmt, \ |
| 41 | __func__, __LINE__, ## args); \ |
| 42 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf(), \ |
| 43 | IPA_GSB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 44 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 45 | IPA_GSB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 46 | } while (0) |
| 47 | |
| 48 | #define IPA_GSB_DBG_LOW(fmt, args...) \ |
| 49 | do { \ |
| 50 | pr_debug(IPA_GSB_DRV_NAME " %s:%d " fmt, \ |
| 51 | __func__, __LINE__, ## args); \ |
| 52 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 53 | IPA_GSB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 54 | } while (0) |
| 55 | |
| 56 | #define IPA_GSB_ERR(fmt, args...) \ |
| 57 | do { \ |
| 58 | pr_err(IPA_GSB_DRV_NAME " %s:%d " fmt, \ |
| 59 | __func__, __LINE__, ## args); \ |
| 60 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf(), \ |
| 61 | IPA_GSB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 62 | IPA_IPC_LOGGING(ipa_get_ipc_logbuf_low(), \ |
| 63 | IPA_GSB_DRV_NAME " %s:%d " fmt, ## args); \ |
| 64 | } while (0) |
| 65 | |
| 66 | #define IPA_GSB_MAX_MSG_LEN 512 |
| 67 | static char dbg_buff[IPA_GSB_MAX_MSG_LEN]; |
| 68 | |
| 69 | #define IPA_GSB_SKB_HEADROOM 256 |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 70 | #define IPA_GSB_SKB_DUMMY_HEADER 42 |
| 71 | #define IPA_GSB_AGGR_BYTE_LIMIT 14 |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 72 | #define IPA_GSB_AGGR_TIME_LIMIT 1 |
| 73 | |
| 74 | static struct dentry *dent; |
| 75 | static struct dentry *dfile_stats; |
| 76 | |
| 77 | /** |
| 78 | * struct stats - driver statistics, |
| 79 | * @num_ul_packets: number of uplink packets |
| 80 | * @num_dl_packets: number of downlink packets |
| 81 | * @num_insufficient_headroom_packets: number of |
| 82 | packets with insufficient headroom |
| 83 | */ |
| 84 | struct stats { |
| 85 | u64 num_ul_packets; |
| 86 | u64 num_dl_packets; |
| 87 | u64 num_insufficient_headroom_packets; |
| 88 | }; |
| 89 | |
| 90 | /** |
| 91 | * struct ipa_gsb_mux_hdr - ipa gsb mux header, |
| 92 | * @iface_hdl: interface handle |
| 93 | * @qmap_id: qmap id |
| 94 | * @pkt_size: packet size |
| 95 | */ |
| 96 | struct ipa_gsb_mux_hdr { |
| 97 | u8 iface_hdl; |
| 98 | u8 qmap_id; |
| 99 | u16 pkt_size; |
| 100 | }; |
| 101 | |
| 102 | /** |
| 103 | * struct ipa_gsb_iface_info - GSB interface information |
| 104 | * @netdev_name: network interface name |
| 105 | * @device_ethaddr: network interface ethernet address |
| 106 | * @priv: client's private data. to be used in client's callbacks |
| 107 | * @tx_dp_notify: client callback for handling IPA ODU_PROD callback |
| 108 | * @send_dl_skb: client callback for sending skb in downlink direction |
| 109 | * @iface_stats: statistics, how many packets were transmitted |
| 110 | * using the SW bridge. |
| 111 | * @partial_hdr_hdl: handle for partial header |
| 112 | * @wakeup_request: client callback to wakeup |
| 113 | * @is_conencted: is interface connected ? |
| 114 | * @is_resumed: is interface resumed ? |
| 115 | * @iface_hdl: interface handle |
| 116 | */ |
| 117 | struct ipa_gsb_iface_info { |
| 118 | char netdev_name[IPA_RESOURCE_NAME_MAX]; |
| 119 | u8 device_ethaddr[ETH_ALEN]; |
| 120 | void *priv; |
| 121 | ipa_notify_cb tx_dp_notify; |
| 122 | int (*send_dl_skb)(void *priv, struct sk_buff *skb); |
| 123 | struct stats iface_stats; |
| 124 | uint32_t partial_hdr_hdl[IPA_IP_MAX]; |
| 125 | void (*wakeup_request)(void *); |
| 126 | bool is_connected; |
| 127 | bool is_resumed; |
| 128 | u8 iface_hdl; |
| 129 | }; |
| 130 | |
| 131 | /** |
| 132 | * struct ipa_gsb_context - GSB driver context information |
| 133 | * @logbuf: buffer of ipc logging |
| 134 | * @logbuf_low: buffer of ipc logging (low priority) |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 135 | * @lock: global mutex lock for global variables |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 136 | * @prod_hdl: handle for prod pipe |
| 137 | * @cons_hdl: handle for cons pipe |
| 138 | * @ipa_sys_desc_size: sys pipe desc size |
| 139 | * @num_iface: number of interface |
| 140 | * @iface_hdl: interface handles |
| 141 | * @num_connected_iface: number of connected interface |
| 142 | * @num_resumed_iface: number of resumed interface |
| 143 | * @iface: interface information |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 144 | * @iface_lock: interface mutex lock for control path |
| 145 | * @iface_spinlock: interface spinlock for data path |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 146 | * @pm_hdl: IPA PM handle |
| 147 | */ |
| 148 | struct ipa_gsb_context { |
| 149 | void *logbuf; |
| 150 | void *logbuf_low; |
| 151 | struct mutex lock; |
| 152 | u32 prod_hdl; |
| 153 | u32 cons_hdl; |
| 154 | u32 ipa_sys_desc_size; |
| 155 | int num_iface; |
| 156 | bool iface_hdl[MAX_SUPPORTED_IFACE]; |
| 157 | int num_connected_iface; |
| 158 | int num_resumed_iface; |
| 159 | struct ipa_gsb_iface_info *iface[MAX_SUPPORTED_IFACE]; |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 160 | struct mutex iface_lock[MAX_SUPPORTED_IFACE]; |
| 161 | spinlock_t iface_spinlock[MAX_SUPPORTED_IFACE]; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 162 | u32 pm_hdl; |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 163 | atomic_t disconnect_in_progress; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 164 | }; |
| 165 | |
| 166 | static struct ipa_gsb_context *ipa_gsb_ctx; |
| 167 | |
| 168 | #ifdef CONFIG_DEBUG_FS |
| 169 | static ssize_t ipa_gsb_debugfs_stats(struct file *file, |
| 170 | char __user *ubuf, |
| 171 | size_t count, |
| 172 | loff_t *ppos) |
| 173 | { |
| 174 | int i, nbytes = 0; |
| 175 | |
| 176 | for (i = 0; i < MAX_SUPPORTED_IFACE; i++) |
| 177 | if (ipa_gsb_ctx->iface[i] != NULL) { |
| 178 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 179 | IPA_GSB_MAX_MSG_LEN - nbytes, |
| 180 | "netdev: %s\n", |
| 181 | ipa_gsb_ctx->iface[i]->netdev_name); |
| 182 | |
| 183 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 184 | IPA_GSB_MAX_MSG_LEN - nbytes, |
| 185 | "UL packets: %lld\n", |
| 186 | ipa_gsb_ctx->iface[i]-> |
| 187 | iface_stats.num_ul_packets); |
| 188 | |
| 189 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 190 | IPA_GSB_MAX_MSG_LEN - nbytes, |
| 191 | "DL packets: %lld\n", |
| 192 | ipa_gsb_ctx->iface[i]-> |
| 193 | iface_stats.num_dl_packets); |
| 194 | |
| 195 | nbytes += scnprintf(&dbg_buff[nbytes], |
| 196 | IPA_GSB_MAX_MSG_LEN - nbytes, |
| 197 | "packets with insufficient headroom: %lld\n", |
| 198 | ipa_gsb_ctx->iface[i]-> |
| 199 | iface_stats.num_insufficient_headroom_packets); |
| 200 | } |
| 201 | return simple_read_from_buffer(ubuf, count, ppos, dbg_buff, nbytes); |
| 202 | } |
| 203 | |
| 204 | static const struct file_operations ipa_gsb_stats_ops = { |
| 205 | .read = ipa_gsb_debugfs_stats, |
| 206 | }; |
| 207 | |
| 208 | static void ipa_gsb_debugfs_init(void) |
| 209 | { |
| 210 | const mode_t read_only_mode = 00444; |
| 211 | |
| 212 | dent = debugfs_create_dir("ipa_gsb", NULL); |
| 213 | if (IS_ERR(dent)) { |
| 214 | IPA_GSB_ERR("fail to create folder ipa_gsb\n"); |
| 215 | return; |
| 216 | } |
| 217 | |
| 218 | dfile_stats = |
| 219 | debugfs_create_file("stats", read_only_mode, dent, |
| 220 | NULL, &ipa_gsb_stats_ops); |
| 221 | if (!dfile_stats || IS_ERR(dfile_stats)) { |
| 222 | IPA_GSB_ERR("fail to create file stats\n"); |
| 223 | goto fail; |
| 224 | } |
| 225 | |
| 226 | return; |
| 227 | |
| 228 | fail: |
| 229 | debugfs_remove_recursive(dent); |
| 230 | } |
| 231 | |
| 232 | static void ipa_gsb_debugfs_destroy(void) |
| 233 | { |
| 234 | debugfs_remove_recursive(dent); |
| 235 | } |
| 236 | #else |
| 237 | static void ipa_gsb_debugfs_init(void) |
| 238 | { |
| 239 | } |
| 240 | |
| 241 | static void ipa_gsb_debugfs_destroy(void) |
| 242 | { |
| 243 | } |
| 244 | #endif |
| 245 | |
| 246 | static int ipa_gsb_driver_init(struct odu_bridge_params *params) |
| 247 | { |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 248 | int i; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 249 | if (!ipa_is_ready()) { |
| 250 | IPA_GSB_ERR("IPA is not ready\n"); |
| 251 | return -EFAULT; |
| 252 | } |
| 253 | |
| 254 | ipa_gsb_ctx = kzalloc(sizeof(*ipa_gsb_ctx), |
| 255 | GFP_KERNEL); |
| 256 | |
| 257 | if (!ipa_gsb_ctx) |
| 258 | return -ENOMEM; |
| 259 | |
| 260 | mutex_init(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 261 | for (i = 0; i < MAX_SUPPORTED_IFACE; i++) { |
| 262 | mutex_init(&ipa_gsb_ctx->iface_lock[i]); |
| 263 | spin_lock_init(&ipa_gsb_ctx->iface_spinlock[i]); |
| 264 | } |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 265 | ipa_gsb_debugfs_init(); |
| 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | static int ipa_gsb_commit_partial_hdr(struct ipa_gsb_iface_info *iface_info) |
| 271 | { |
| 272 | int i; |
| 273 | struct ipa_ioc_add_hdr *hdr; |
| 274 | |
| 275 | if (!iface_info) { |
| 276 | IPA_GSB_ERR("invalid input\n"); |
| 277 | return -EINVAL; |
| 278 | } |
| 279 | |
| 280 | hdr = kzalloc(sizeof(struct ipa_ioc_add_hdr) + |
| 281 | 2 * sizeof(struct ipa_hdr_add), GFP_KERNEL); |
| 282 | if (!hdr) |
| 283 | return -ENOMEM; |
| 284 | |
| 285 | hdr->commit = 1; |
| 286 | hdr->num_hdrs = 2; |
| 287 | |
| 288 | snprintf(hdr->hdr[0].name, sizeof(hdr->hdr[0].name), |
| 289 | "%s_ipv4", iface_info->netdev_name); |
| 290 | snprintf(hdr->hdr[1].name, sizeof(hdr->hdr[1].name), |
| 291 | "%s_ipv6", iface_info->netdev_name); |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 292 | /* |
| 293 | * partial header: |
| 294 | * [hdl][QMAP ID][pkt size][Dummy Header][ETH header] |
| 295 | */ |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 296 | for (i = IPA_IP_v4; i < IPA_IP_MAX; i++) { |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 297 | /* |
| 298 | * Optimization: add dummy header to reserve space |
| 299 | * for rndis header, so we can do the skb_clone |
| 300 | * instead of deep copy. |
| 301 | */ |
| 302 | hdr->hdr[i].hdr_len = ETH_HLEN + |
| 303 | sizeof(struct ipa_gsb_mux_hdr) + |
| 304 | IPA_GSB_SKB_DUMMY_HEADER; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 305 | hdr->hdr[i].type = IPA_HDR_L2_ETHERNET_II; |
| 306 | hdr->hdr[i].is_partial = 1; |
| 307 | hdr->hdr[i].is_eth2_ofst_valid = 1; |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 308 | hdr->hdr[i].eth2_ofst = sizeof(struct ipa_gsb_mux_hdr) + |
| 309 | IPA_GSB_SKB_DUMMY_HEADER; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 310 | /* populate iface handle */ |
| 311 | hdr->hdr[i].hdr[0] = iface_info->iface_hdl; |
| 312 | /* populate src ETH address */ |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 313 | memcpy(&hdr->hdr[i].hdr[10 + IPA_GSB_SKB_DUMMY_HEADER], |
| 314 | iface_info->device_ethaddr, 6); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 315 | /* populate Ethertype */ |
| 316 | if (i == IPA_IP_v4) |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 317 | *(u16 *)(hdr->hdr[i].hdr + 16 + |
| 318 | IPA_GSB_SKB_DUMMY_HEADER) = htons(ETH_P_IP); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 319 | else |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 320 | *(u16 *)(hdr->hdr[i].hdr + 16 + |
| 321 | IPA_GSB_SKB_DUMMY_HEADER) = htons(ETH_P_IPV6); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | if (ipa_add_hdr(hdr)) { |
| 325 | IPA_GSB_ERR("fail to add partial headers\n"); |
| 326 | kfree(hdr); |
| 327 | return -EFAULT; |
| 328 | } |
| 329 | |
| 330 | for (i = IPA_IP_v4; i < IPA_IP_MAX; i++) |
| 331 | iface_info->partial_hdr_hdl[i] = |
| 332 | hdr->hdr[i].hdr_hdl; |
| 333 | |
| 334 | IPA_GSB_DBG("added partial hdr hdl for ipv4: %d\n", |
| 335 | iface_info->partial_hdr_hdl[IPA_IP_v4]); |
| 336 | IPA_GSB_DBG("added partial hdr hdl for ipv6: %d\n", |
| 337 | iface_info->partial_hdr_hdl[IPA_IP_v6]); |
| 338 | |
| 339 | kfree(hdr); |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | static void ipa_gsb_delete_partial_hdr(struct ipa_gsb_iface_info *iface_info) |
| 344 | { |
| 345 | struct ipa_ioc_del_hdr *del_hdr; |
| 346 | |
| 347 | del_hdr = kzalloc(sizeof(struct ipa_ioc_del_hdr) + |
| 348 | 2 * sizeof(struct ipa_hdr_del), GFP_KERNEL); |
| 349 | if (!del_hdr) |
| 350 | return; |
| 351 | |
| 352 | del_hdr->commit = 1; |
| 353 | del_hdr->num_hdls = 2; |
| 354 | del_hdr->hdl[IPA_IP_v4].hdl = iface_info->partial_hdr_hdl[IPA_IP_v4]; |
| 355 | del_hdr->hdl[IPA_IP_v6].hdl = iface_info->partial_hdr_hdl[IPA_IP_v6]; |
| 356 | |
| 357 | if (ipa_del_hdr(del_hdr) != 0) |
| 358 | IPA_GSB_ERR("failed to delete partial hdr\n"); |
| 359 | |
| 360 | IPA_GSB_DBG("deleted partial hdr hdl for ipv4: %d\n", |
| 361 | iface_info->partial_hdr_hdl[IPA_IP_v4]); |
| 362 | IPA_GSB_DBG("deleted partial hdr hdl for ipv6: %d\n", |
| 363 | iface_info->partial_hdr_hdl[IPA_IP_v6]); |
| 364 | |
| 365 | kfree(del_hdr); |
| 366 | } |
| 367 | |
| 368 | static int ipa_gsb_reg_intf_props(struct ipa_gsb_iface_info *iface_info) |
| 369 | { |
| 370 | struct ipa_tx_intf tx; |
| 371 | struct ipa_rx_intf rx; |
| 372 | struct ipa_ioc_tx_intf_prop tx_prop[2]; |
| 373 | struct ipa_ioc_rx_intf_prop rx_prop[2]; |
| 374 | |
| 375 | /* populate tx prop */ |
| 376 | tx.num_props = 2; |
| 377 | tx.prop = tx_prop; |
| 378 | |
| 379 | memset(tx_prop, 0, sizeof(tx_prop)); |
| 380 | tx_prop[0].ip = IPA_IP_v4; |
| 381 | tx_prop[0].dst_pipe = IPA_CLIENT_ODU_EMB_CONS; |
| 382 | tx_prop[0].hdr_l2_type = IPA_HDR_L2_ETHERNET_II; |
| 383 | snprintf(tx_prop[0].hdr_name, sizeof(tx_prop[0].hdr_name), |
| 384 | "%s_ipv4", iface_info->netdev_name); |
| 385 | |
| 386 | tx_prop[1].ip = IPA_IP_v6; |
| 387 | tx_prop[1].dst_pipe = IPA_CLIENT_ODU_EMB_CONS; |
| 388 | tx_prop[1].hdr_l2_type = IPA_HDR_L2_ETHERNET_II; |
| 389 | snprintf(tx_prop[1].hdr_name, sizeof(tx_prop[1].hdr_name), |
| 390 | "%s_ipv6", iface_info->netdev_name); |
| 391 | |
| 392 | /* populate rx prop */ |
| 393 | rx.num_props = 2; |
| 394 | rx.prop = rx_prop; |
| 395 | |
| 396 | memset(rx_prop, 0, sizeof(rx_prop)); |
| 397 | rx_prop[0].ip = IPA_IP_v4; |
| 398 | rx_prop[0].src_pipe = IPA_CLIENT_ODU_PROD; |
| 399 | rx_prop[0].hdr_l2_type = IPA_HDR_L2_ETHERNET_II; |
| 400 | rx_prop[0].attrib.attrib_mask |= IPA_FLT_META_DATA; |
| 401 | rx_prop[0].attrib.meta_data = iface_info->iface_hdl; |
| 402 | rx_prop[0].attrib.meta_data_mask = 0xFF; |
| 403 | |
| 404 | rx_prop[1].ip = IPA_IP_v6; |
| 405 | rx_prop[1].src_pipe = IPA_CLIENT_ODU_PROD; |
| 406 | rx_prop[1].hdr_l2_type = IPA_HDR_L2_ETHERNET_II; |
| 407 | rx_prop[1].attrib.attrib_mask |= IPA_FLT_META_DATA; |
| 408 | rx_prop[1].attrib.meta_data = iface_info->iface_hdl; |
| 409 | rx_prop[1].attrib.meta_data_mask = 0xFF; |
| 410 | |
| 411 | if (ipa_register_intf(iface_info->netdev_name, &tx, &rx)) { |
| 412 | IPA_GSB_ERR("fail to add interface prop\n"); |
| 413 | return -EFAULT; |
| 414 | } |
| 415 | |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | static void ipa_gsb_dereg_intf_props(struct ipa_gsb_iface_info *iface_info) |
| 420 | { |
| 421 | if (ipa_deregister_intf(iface_info->netdev_name) != 0) |
| 422 | IPA_GSB_ERR("fail to dereg intf props\n"); |
| 423 | |
| 424 | IPA_GSB_DBG("deregistered iface props for %s\n", |
| 425 | iface_info->netdev_name); |
| 426 | } |
| 427 | |
| 428 | static void ipa_gsb_pm_cb(void *user_data, enum ipa_pm_cb_event event) |
| 429 | { |
| 430 | int i; |
| 431 | |
| 432 | if (event != IPA_PM_REQUEST_WAKEUP) { |
| 433 | IPA_GSB_ERR("Unexpected event %d\n", event); |
| 434 | WARN_ON(1); |
| 435 | return; |
| 436 | } |
| 437 | |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 438 | IPA_GSB_DBG_LOW("wake up clients\n"); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 439 | for (i = 0; i < MAX_SUPPORTED_IFACE; i++) |
| 440 | if (ipa_gsb_ctx->iface[i] != NULL) |
| 441 | ipa_gsb_ctx->iface[i]->wakeup_request( |
| 442 | ipa_gsb_ctx->iface[i]->priv); |
| 443 | } |
| 444 | |
| 445 | static int ipa_gsb_register_pm(void) |
| 446 | { |
| 447 | struct ipa_pm_register_params reg_params; |
| 448 | int ret; |
| 449 | |
| 450 | memset(®_params, 0, sizeof(reg_params)); |
| 451 | reg_params.name = "ipa_gsb"; |
| 452 | reg_params.callback = ipa_gsb_pm_cb; |
| 453 | reg_params.user_data = NULL; |
| 454 | reg_params.group = IPA_PM_GROUP_DEFAULT; |
| 455 | |
| 456 | ret = ipa_pm_register(®_params, |
| 457 | &ipa_gsb_ctx->pm_hdl); |
| 458 | if (ret) { |
| 459 | IPA_GSB_ERR("fail to register with PM %d\n", ret); |
| 460 | goto fail_pm_reg; |
| 461 | } |
| 462 | IPA_GSB_DBG("ipa pm hdl: %d\n", ipa_gsb_ctx->pm_hdl); |
| 463 | |
| 464 | ret = ipa_pm_associate_ipa_cons_to_client(ipa_gsb_ctx->pm_hdl, |
| 465 | IPA_CLIENT_ODU_EMB_CONS); |
| 466 | if (ret) { |
| 467 | IPA_GSB_ERR("fail to associate cons with PM %d\n", ret); |
| 468 | goto fail_pm_cons; |
| 469 | } |
| 470 | |
| 471 | return 0; |
| 472 | |
| 473 | fail_pm_cons: |
| 474 | ipa_pm_deregister(ipa_gsb_ctx->pm_hdl); |
| 475 | ipa_gsb_ctx->pm_hdl = ~0; |
| 476 | fail_pm_reg: |
| 477 | return ret; |
| 478 | } |
| 479 | |
| 480 | int ipa_bridge_init(struct ipa_bridge_init_params *params, u32 *hdl) |
| 481 | { |
| 482 | int i, ret; |
| 483 | struct ipa_gsb_iface_info *new_intf; |
| 484 | |
| 485 | if (!params || !params->wakeup_request || !hdl || |
| 486 | !params->info.netdev_name || !params->info.tx_dp_notify || |
| 487 | !params->info.send_dl_skb) { |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 488 | IPA_GSB_ERR("Invalid parameters\n"); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 489 | return -EINVAL; |
| 490 | } |
| 491 | |
| 492 | IPA_GSB_DBG("netdev_name: %s\n", params->info.netdev_name); |
| 493 | |
| 494 | if (ipa_gsb_ctx == NULL) { |
| 495 | ret = ipa_gsb_driver_init(¶ms->info); |
| 496 | if (ret) { |
| 497 | IPA_GSB_ERR("fail to init ipa gsb driver\n"); |
| 498 | return -EFAULT; |
| 499 | } |
| 500 | ipa_gsb_ctx->ipa_sys_desc_size = |
| 501 | params->info.ipa_desc_size; |
| 502 | IPA_GSB_DBG("desc size: %d\n", ipa_gsb_ctx->ipa_sys_desc_size); |
| 503 | } |
| 504 | |
| 505 | mutex_lock(&ipa_gsb_ctx->lock); |
| 506 | |
| 507 | if (params->info.ipa_desc_size != ipa_gsb_ctx->ipa_sys_desc_size) { |
| 508 | IPA_GSB_ERR("unmatch: orig desc size %d, new desc size %d\n", |
| 509 | ipa_gsb_ctx->ipa_sys_desc_size, |
| 510 | params->info.ipa_desc_size); |
| 511 | mutex_unlock(&ipa_gsb_ctx->lock); |
| 512 | return -EFAULT; |
| 513 | } |
| 514 | |
| 515 | for (i = 0; i < MAX_SUPPORTED_IFACE; i++) |
| 516 | if (ipa_gsb_ctx->iface[i] != NULL && |
| 517 | strnlen(ipa_gsb_ctx->iface[i]->netdev_name, |
| 518 | IPA_RESOURCE_NAME_MAX) == |
| 519 | strnlen(params->info.netdev_name, |
| 520 | IPA_RESOURCE_NAME_MAX) && |
| 521 | strcmp(ipa_gsb_ctx->iface[i]->netdev_name, |
| 522 | params->info.netdev_name) == 0) { |
| 523 | IPA_GSB_ERR("intf was added before.\n"); |
| 524 | mutex_unlock(&ipa_gsb_ctx->lock); |
| 525 | return -EFAULT; |
| 526 | } |
| 527 | |
| 528 | if (ipa_gsb_ctx->num_iface == MAX_SUPPORTED_IFACE) { |
| 529 | IPA_GSB_ERR("reached maximum supported interfaces"); |
| 530 | mutex_unlock(&ipa_gsb_ctx->lock); |
| 531 | return -EFAULT; |
| 532 | } |
| 533 | |
| 534 | for (i = 0; i < MAX_SUPPORTED_IFACE; i++) |
| 535 | if (ipa_gsb_ctx->iface_hdl[i] == false) { |
| 536 | ipa_gsb_ctx->iface_hdl[i] = true; |
| 537 | *hdl = i; |
| 538 | IPA_GSB_DBG("iface hdl: %d\n", *hdl); |
| 539 | break; |
| 540 | } |
| 541 | |
| 542 | IPA_GSB_DBG("intf was not added before, proceed.\n"); |
| 543 | new_intf = kzalloc(sizeof(*new_intf), GFP_KERNEL); |
| 544 | if (new_intf == NULL) { |
| 545 | ret = -ENOMEM; |
| 546 | goto fail_alloc_mem; |
| 547 | } |
| 548 | |
| 549 | strlcpy(new_intf->netdev_name, params->info.netdev_name, |
| 550 | sizeof(new_intf->netdev_name)); |
| 551 | new_intf->wakeup_request = params->wakeup_request; |
| 552 | new_intf->priv = params->info.priv; |
| 553 | new_intf->tx_dp_notify = params->info.tx_dp_notify; |
| 554 | new_intf->send_dl_skb = params->info.send_dl_skb; |
| 555 | new_intf->iface_hdl = *hdl; |
| 556 | memcpy(new_intf->device_ethaddr, params->info.device_ethaddr, |
| 557 | sizeof(new_intf->device_ethaddr)); |
| 558 | |
| 559 | if (ipa_gsb_commit_partial_hdr(new_intf) != 0) { |
| 560 | IPA_GSB_ERR("fail to commit partial hdrs\n"); |
| 561 | ret = -EFAULT; |
| 562 | goto fail_partial_hdr; |
| 563 | } |
| 564 | |
| 565 | if (ipa_gsb_reg_intf_props(new_intf) != 0) { |
| 566 | IPA_GSB_ERR("fail to register interface props\n"); |
| 567 | ret = -EFAULT; |
| 568 | goto fail_reg_intf_props; |
| 569 | } |
| 570 | |
| 571 | if (ipa_gsb_ctx->num_iface == 0) { |
| 572 | ret = ipa_gsb_register_pm(); |
| 573 | if (ret) { |
| 574 | IPA_GSB_ERR("fail to register with IPA PM %d\n", ret); |
| 575 | ret = -EFAULT; |
| 576 | goto fail_register_pm; |
| 577 | } |
| 578 | } |
| 579 | |
| 580 | ipa_gsb_ctx->iface[*hdl] = new_intf; |
| 581 | ipa_gsb_ctx->num_iface++; |
| 582 | IPA_GSB_DBG("num_iface %d\n", ipa_gsb_ctx->num_iface); |
| 583 | mutex_unlock(&ipa_gsb_ctx->lock); |
| 584 | return 0; |
| 585 | |
| 586 | fail_register_pm: |
| 587 | ipa_gsb_dereg_intf_props(new_intf); |
| 588 | fail_reg_intf_props: |
| 589 | ipa_gsb_delete_partial_hdr(new_intf); |
| 590 | fail_partial_hdr: |
| 591 | kfree(new_intf); |
| 592 | fail_alloc_mem: |
| 593 | ipa_gsb_ctx->iface_hdl[*hdl] = false; |
| 594 | mutex_unlock(&ipa_gsb_ctx->lock); |
| 595 | return ret; |
| 596 | } |
| 597 | EXPORT_SYMBOL(ipa_bridge_init); |
| 598 | |
| 599 | static void ipa_gsb_deregister_pm(void) |
| 600 | { |
| 601 | IPA_GSB_DBG("deregister ipa pm hdl: %d\n", ipa_gsb_ctx->pm_hdl); |
| 602 | ipa_pm_deactivate_sync(ipa_gsb_ctx->pm_hdl); |
| 603 | ipa_pm_deregister(ipa_gsb_ctx->pm_hdl); |
| 604 | ipa_gsb_ctx->pm_hdl = ~0; |
| 605 | } |
| 606 | |
| 607 | int ipa_bridge_cleanup(u32 hdl) |
| 608 | { |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 609 | int i; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 610 | if (!ipa_gsb_ctx) { |
| 611 | IPA_GSB_ERR("ipa_gsb_ctx was not initialized\n"); |
| 612 | return -EFAULT; |
| 613 | } |
| 614 | |
| 615 | if (hdl >= MAX_SUPPORTED_IFACE) { |
| 616 | IPA_GSB_ERR("invalid hdl: %d\n", hdl); |
| 617 | return -EINVAL; |
| 618 | } |
| 619 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 620 | mutex_lock(&ipa_gsb_ctx->iface_lock[hdl]); |
| 621 | if (!ipa_gsb_ctx->iface[hdl]) { |
| 622 | IPA_GSB_ERR("fail to find interface, hdl: %d\n", hdl); |
| 623 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 624 | return -EFAULT; |
| 625 | } |
| 626 | |
| 627 | IPA_GSB_DBG("client hdl: %d\n", hdl); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 628 | |
| 629 | if (ipa_gsb_ctx->iface[hdl]->is_connected) { |
| 630 | IPA_GSB_ERR("cannot cleanup when iface is connected\n"); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 631 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 632 | return -EFAULT; |
| 633 | } |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 634 | ipa_gsb_dereg_intf_props(ipa_gsb_ctx->iface[hdl]); |
| 635 | ipa_gsb_delete_partial_hdr(ipa_gsb_ctx->iface[hdl]); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 636 | spin_lock_bh(&ipa_gsb_ctx->iface_spinlock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 637 | kfree(ipa_gsb_ctx->iface[hdl]); |
| 638 | ipa_gsb_ctx->iface[hdl] = NULL; |
| 639 | ipa_gsb_ctx->iface_hdl[hdl] = false; |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 640 | spin_unlock_bh(&ipa_gsb_ctx->iface_spinlock[hdl]); |
| 641 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
| 642 | mutex_lock(&ipa_gsb_ctx->lock); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 643 | ipa_gsb_ctx->num_iface--; |
| 644 | IPA_GSB_DBG("num_iface %d\n", ipa_gsb_ctx->num_iface); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 645 | if (ipa_gsb_ctx->num_iface == 0) { |
| 646 | ipa_gsb_deregister_pm(); |
| 647 | ipa_gsb_debugfs_destroy(); |
| 648 | ipc_log_context_destroy(ipa_gsb_ctx->logbuf); |
| 649 | ipc_log_context_destroy(ipa_gsb_ctx->logbuf_low); |
| 650 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 651 | mutex_destroy(&ipa_gsb_ctx->lock); |
| 652 | for (i = 0; i < MAX_SUPPORTED_IFACE; i++) |
| 653 | mutex_destroy(&ipa_gsb_ctx->iface_lock[i]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 654 | kfree(ipa_gsb_ctx); |
| 655 | ipa_gsb_ctx = NULL; |
| 656 | return 0; |
| 657 | } |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 658 | mutex_unlock(&ipa_gsb_ctx->lock); |
| 659 | return 0; |
| 660 | } |
| 661 | EXPORT_SYMBOL(ipa_bridge_cleanup); |
| 662 | |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 663 | static void ipa_gsb_cons_cb(void *priv, enum ipa_dp_evt_type evt, |
| 664 | unsigned long data) |
| 665 | { |
| 666 | struct sk_buff *skb; |
| 667 | struct sk_buff *skb2; |
| 668 | struct ipa_gsb_mux_hdr *mux_hdr; |
| 669 | u16 pkt_size, pad_byte; |
| 670 | u8 hdl; |
| 671 | |
| 672 | if (evt != IPA_RECEIVE) { |
| 673 | IPA_GSB_ERR("unexpected event\n"); |
| 674 | WARN_ON(1); |
| 675 | return; |
| 676 | } |
| 677 | |
| 678 | skb = (struct sk_buff *)data; |
| 679 | |
| 680 | while (skb->len) { |
| 681 | mux_hdr = (struct ipa_gsb_mux_hdr *)skb->data; |
| 682 | pkt_size = mux_hdr->pkt_size; |
| 683 | /* 4-byte padding */ |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 684 | pad_byte = ((pkt_size + sizeof(*mux_hdr) + ETH_HLEN + |
| 685 | 3 + IPA_GSB_SKB_DUMMY_HEADER) & ~3) - |
| 686 | (pkt_size + sizeof(*mux_hdr) + |
| 687 | ETH_HLEN + IPA_GSB_SKB_DUMMY_HEADER); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 688 | hdl = mux_hdr->iface_hdl; |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 689 | if (hdl >= MAX_SUPPORTED_IFACE) { |
| 690 | IPA_GSB_ERR("invalid hdl: %d\n", hdl); |
| 691 | break; |
| 692 | } |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 693 | IPA_GSB_DBG_LOW("pkt_size: %d, pad_byte: %d, hdl: %d\n", |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 694 | pkt_size, pad_byte, hdl); |
| 695 | |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 696 | /* remove 4 byte mux header AND dummy header*/ |
| 697 | skb_pull(skb, sizeof(*mux_hdr) + IPA_GSB_SKB_DUMMY_HEADER); |
| 698 | |
| 699 | skb2 = skb_clone(skb, GFP_KERNEL); |
| 700 | if (!skb2) { |
| 701 | IPA_GSB_ERR("skb_clone failed\n"); |
| 702 | WARN_ON(1); |
| 703 | break; |
| 704 | } |
| 705 | skb_trim(skb2, pkt_size + ETH_HLEN); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 706 | spin_lock_bh(&ipa_gsb_ctx->iface_spinlock[hdl]); |
| 707 | if (ipa_gsb_ctx->iface[hdl] != NULL) { |
| 708 | ipa_gsb_ctx->iface[hdl]->send_dl_skb( |
| 709 | ipa_gsb_ctx->iface[hdl]->priv, skb2); |
| 710 | ipa_gsb_ctx->iface[hdl]->iface_stats.num_dl_packets++; |
| 711 | spin_unlock_bh(&ipa_gsb_ctx->iface_spinlock[hdl]); |
| 712 | skb_pull(skb, pkt_size + ETH_HLEN + pad_byte); |
| 713 | } else { |
| 714 | IPA_GSB_ERR("Invalid hdl: %d, drop the skb\n", hdl); |
| 715 | spin_unlock_bh(&ipa_gsb_ctx->iface_spinlock[hdl]); |
| 716 | dev_kfree_skb_any(skb2); |
| 717 | break; |
| 718 | } |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 719 | } |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 720 | |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 721 | if (skb) { |
| 722 | dev_kfree_skb_any(skb); |
| 723 | skb = NULL; |
| 724 | } |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 725 | } |
| 726 | |
| 727 | static void ipa_gsb_tx_dp_notify(void *priv, enum ipa_dp_evt_type evt, |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 728 | unsigned long data) |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 729 | { |
| 730 | struct sk_buff *skb; |
| 731 | struct ipa_gsb_mux_hdr *mux_hdr; |
| 732 | u8 hdl; |
| 733 | |
| 734 | skb = (struct sk_buff *)data; |
| 735 | |
| 736 | if (evt != IPA_WRITE_DONE && evt != IPA_RECEIVE) { |
| 737 | IPA_GSB_ERR("unexpected event: %d\n", evt); |
| 738 | dev_kfree_skb_any(skb); |
| 739 | return; |
| 740 | } |
| 741 | |
| 742 | /* fetch iface handle from header */ |
| 743 | mux_hdr = (struct ipa_gsb_mux_hdr *)skb->data; |
| 744 | /* change to host order */ |
| 745 | *(u32 *)mux_hdr = ntohl(*(u32 *)mux_hdr); |
| 746 | hdl = mux_hdr->iface_hdl; |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 747 | if (!ipa_gsb_ctx->iface[hdl]) { |
| 748 | IPA_GSB_ERR("invalid hdl: %d and cb, drop the skb\n", hdl); |
| 749 | dev_kfree_skb_any(skb); |
| 750 | return; |
| 751 | } |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 752 | IPA_GSB_DBG_LOW("evt: %d, hdl in tx_dp_notify: %d\n", evt, hdl); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 753 | |
| 754 | /* remove 4 byte mux header */ |
| 755 | skb_pull(skb, sizeof(struct ipa_gsb_mux_hdr)); |
| 756 | ipa_gsb_ctx->iface[hdl]->tx_dp_notify( |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 757 | ipa_gsb_ctx->iface[hdl]->priv, evt, |
| 758 | (unsigned long)skb); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 759 | } |
| 760 | |
| 761 | static int ipa_gsb_connect_sys_pipe(void) |
| 762 | { |
| 763 | struct ipa_sys_connect_params prod_params; |
| 764 | struct ipa_sys_connect_params cons_params; |
| 765 | int res; |
| 766 | |
| 767 | memset(&prod_params, 0, sizeof(prod_params)); |
| 768 | memset(&cons_params, 0, sizeof(cons_params)); |
| 769 | |
| 770 | /* configure RX EP */ |
| 771 | prod_params.client = IPA_CLIENT_ODU_PROD; |
| 772 | prod_params.ipa_ep_cfg.hdr.hdr_len = |
| 773 | ETH_HLEN + sizeof(struct ipa_gsb_mux_hdr); |
| 774 | prod_params.ipa_ep_cfg.nat.nat_en = IPA_SRC_NAT; |
| 775 | prod_params.ipa_ep_cfg.hdr.hdr_ofst_metadata_valid = 1; |
| 776 | prod_params.ipa_ep_cfg.hdr.hdr_ofst_metadata = 0; |
| 777 | prod_params.desc_fifo_sz = ipa_gsb_ctx->ipa_sys_desc_size; |
| 778 | prod_params.priv = NULL; |
| 779 | prod_params.notify = ipa_gsb_tx_dp_notify; |
| 780 | res = ipa_setup_sys_pipe(&prod_params, |
| 781 | &ipa_gsb_ctx->prod_hdl); |
| 782 | if (res) { |
| 783 | IPA_GSB_ERR("fail to setup prod sys pipe %d\n", res); |
| 784 | goto fail_prod; |
| 785 | } |
| 786 | |
| 787 | /* configure TX EP */ |
| 788 | cons_params.client = IPA_CLIENT_ODU_EMB_CONS; |
| 789 | cons_params.ipa_ep_cfg.hdr.hdr_len = |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 790 | ETH_HLEN + sizeof(struct ipa_gsb_mux_hdr) + |
| 791 | IPA_GSB_SKB_DUMMY_HEADER; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 792 | cons_params.ipa_ep_cfg.hdr.hdr_ofst_pkt_size_valid = 1; |
| 793 | cons_params.ipa_ep_cfg.hdr.hdr_ofst_pkt_size = 2; |
| 794 | cons_params.ipa_ep_cfg.hdr_ext.hdr_pad_to_alignment = 2; |
| 795 | cons_params.ipa_ep_cfg.hdr_ext.hdr_little_endian = true; |
| 796 | cons_params.ipa_ep_cfg.nat.nat_en = IPA_BYPASS_NAT; |
| 797 | /* setup aggregation */ |
| 798 | cons_params.ipa_ep_cfg.aggr.aggr_en = IPA_ENABLE_AGGR; |
| 799 | cons_params.ipa_ep_cfg.aggr.aggr = IPA_GENERIC; |
| 800 | cons_params.ipa_ep_cfg.aggr.aggr_time_limit = |
| 801 | IPA_GSB_AGGR_TIME_LIMIT; |
| 802 | cons_params.ipa_ep_cfg.aggr.aggr_byte_limit = |
| 803 | IPA_GSB_AGGR_BYTE_LIMIT; |
| 804 | cons_params.desc_fifo_sz = ipa_gsb_ctx->ipa_sys_desc_size; |
| 805 | cons_params.priv = NULL; |
| 806 | cons_params.notify = ipa_gsb_cons_cb; |
| 807 | res = ipa_setup_sys_pipe(&cons_params, |
| 808 | &ipa_gsb_ctx->cons_hdl); |
| 809 | if (res) { |
| 810 | IPA_GSB_ERR("fail to setup cons sys pipe %d\n", res); |
| 811 | goto fail_cons; |
| 812 | } |
| 813 | |
| 814 | IPA_GSB_DBG("prod_hdl = %d, cons_hdl = %d\n", |
| 815 | ipa_gsb_ctx->prod_hdl, ipa_gsb_ctx->cons_hdl); |
| 816 | |
| 817 | return 0; |
| 818 | |
| 819 | fail_cons: |
| 820 | ipa_teardown_sys_pipe(ipa_gsb_ctx->prod_hdl); |
| 821 | ipa_gsb_ctx->prod_hdl = 0; |
| 822 | fail_prod: |
| 823 | return res; |
| 824 | } |
| 825 | |
| 826 | int ipa_bridge_connect(u32 hdl) |
| 827 | { |
| 828 | int ret; |
| 829 | |
| 830 | if (!ipa_gsb_ctx) { |
| 831 | IPA_GSB_ERR("ipa_gsb_ctx was not initialized\n"); |
| 832 | return -EFAULT; |
| 833 | } |
| 834 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 835 | if (hdl >= MAX_SUPPORTED_IFACE) { |
| 836 | IPA_GSB_ERR("invalid hdl: %d\n", hdl); |
| 837 | return -EINVAL; |
| 838 | } |
| 839 | |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 840 | IPA_GSB_DBG("client hdl: %d\n", hdl); |
| 841 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 842 | mutex_lock(&ipa_gsb_ctx->iface_lock[hdl]); |
| 843 | if (!ipa_gsb_ctx->iface[hdl]) { |
| 844 | IPA_GSB_ERR("fail to find interface, hdl: %d\n", hdl); |
| 845 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
| 846 | return -EFAULT; |
| 847 | } |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 848 | |
| 849 | if (ipa_gsb_ctx->iface[hdl]->is_connected) { |
| 850 | IPA_GSB_DBG("iface was already connected\n"); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 851 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 852 | return 0; |
| 853 | } |
| 854 | |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 855 | mutex_lock(&ipa_gsb_ctx->lock); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 856 | if (ipa_gsb_ctx->num_connected_iface == 0) { |
| 857 | ret = ipa_pm_activate_sync(ipa_gsb_ctx->pm_hdl); |
| 858 | if (ret) { |
| 859 | IPA_GSB_ERR("failed to activate ipa pm\n"); |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 860 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 861 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 862 | return ret; |
| 863 | } |
| 864 | ret = ipa_gsb_connect_sys_pipe(); |
| 865 | if (ret) { |
| 866 | IPA_GSB_ERR("fail to connect pipe\n"); |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 867 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 868 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 869 | return ret; |
| 870 | } |
| 871 | } |
| 872 | |
| 873 | /* connect = connect + resume */ |
| 874 | ipa_gsb_ctx->iface[hdl]->is_connected = true; |
| 875 | ipa_gsb_ctx->iface[hdl]->is_resumed = true; |
| 876 | |
| 877 | ipa_gsb_ctx->num_connected_iface++; |
| 878 | IPA_GSB_DBG("connected iface: %d\n", |
| 879 | ipa_gsb_ctx->num_connected_iface); |
| 880 | ipa_gsb_ctx->num_resumed_iface++; |
| 881 | IPA_GSB_DBG("num resumed iface: %d\n", |
| 882 | ipa_gsb_ctx->num_resumed_iface); |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 883 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 884 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 885 | return 0; |
| 886 | } |
| 887 | EXPORT_SYMBOL(ipa_bridge_connect); |
| 888 | |
| 889 | static int ipa_gsb_disconnect_sys_pipe(void) |
| 890 | { |
| 891 | int ret; |
| 892 | |
| 893 | IPA_GSB_DBG("prod_hdl = %d, cons_hdl = %d\n", |
| 894 | ipa_gsb_ctx->prod_hdl, ipa_gsb_ctx->cons_hdl); |
| 895 | |
| 896 | ret = ipa_teardown_sys_pipe(ipa_gsb_ctx->prod_hdl); |
| 897 | if (ret) { |
| 898 | IPA_GSB_ERR("failed to tear down prod pipe\n"); |
| 899 | return -EFAULT; |
| 900 | } |
| 901 | ipa_gsb_ctx->prod_hdl = 0; |
| 902 | |
| 903 | ret = ipa_teardown_sys_pipe(ipa_gsb_ctx->cons_hdl); |
| 904 | if (ret) { |
| 905 | IPA_GSB_ERR("failed to tear down cons pipe\n"); |
| 906 | return -EFAULT; |
| 907 | } |
| 908 | ipa_gsb_ctx->cons_hdl = 0; |
| 909 | |
| 910 | return 0; |
| 911 | } |
| 912 | |
| 913 | int ipa_bridge_disconnect(u32 hdl) |
| 914 | { |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 915 | int ret = 0; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 916 | |
| 917 | if (!ipa_gsb_ctx) { |
| 918 | IPA_GSB_ERR("ipa_gsb_ctx was not initialized\n"); |
| 919 | return -EFAULT; |
| 920 | } |
| 921 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 922 | if (hdl >= MAX_SUPPORTED_IFACE) { |
| 923 | IPA_GSB_ERR("invalid hdl: %d\n", hdl); |
| 924 | return -EINVAL; |
| 925 | } |
| 926 | |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 927 | IPA_GSB_DBG("client hdl: %d\n", hdl); |
| 928 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 929 | mutex_lock(&ipa_gsb_ctx->iface_lock[hdl]); |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 930 | atomic_set(&ipa_gsb_ctx->disconnect_in_progress, 1); |
| 931 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 932 | if (!ipa_gsb_ctx->iface[hdl]) { |
| 933 | IPA_GSB_ERR("fail to find interface, hdl: %d\n", hdl); |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 934 | ret = -EFAULT; |
| 935 | goto fail; |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 936 | } |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 937 | |
| 938 | if (!ipa_gsb_ctx->iface[hdl]->is_connected) { |
| 939 | IPA_GSB_DBG("iface was not connected\n"); |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 940 | ret = 0; |
| 941 | goto fail; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 942 | } |
| 943 | |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 944 | mutex_lock(&ipa_gsb_ctx->lock); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 945 | if (ipa_gsb_ctx->num_connected_iface == 1) { |
| 946 | ret = ipa_gsb_disconnect_sys_pipe(); |
| 947 | if (ret) { |
| 948 | IPA_GSB_ERR("fail to discon pipes\n"); |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 949 | ret = -EFAULT; |
| 950 | goto fail; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 951 | } |
| 952 | |
| 953 | ret = ipa_pm_deactivate_sync(ipa_gsb_ctx->pm_hdl); |
| 954 | if (ret) { |
| 955 | IPA_GSB_ERR("failed to deactivate ipa pm\n"); |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 956 | ret = -EFAULT; |
| 957 | goto fail; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 958 | } |
| 959 | } |
| 960 | |
| 961 | /* disconnect = suspend + disconnect */ |
| 962 | ipa_gsb_ctx->iface[hdl]->is_connected = false; |
| 963 | ipa_gsb_ctx->num_connected_iface--; |
| 964 | IPA_GSB_DBG("connected iface: %d\n", |
| 965 | ipa_gsb_ctx->num_connected_iface); |
| 966 | |
| 967 | if (ipa_gsb_ctx->iface[hdl]->is_resumed) { |
| 968 | ipa_gsb_ctx->iface[hdl]->is_resumed = false; |
| 969 | ipa_gsb_ctx->num_resumed_iface--; |
| 970 | IPA_GSB_DBG("num resumed iface: %d\n", |
| 971 | ipa_gsb_ctx->num_resumed_iface); |
| 972 | } |
| 973 | |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 974 | fail: |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 975 | mutex_unlock(&ipa_gsb_ctx->lock); |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 976 | atomic_set(&ipa_gsb_ctx->disconnect_in_progress, 0); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 977 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 978 | return ret; |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 979 | } |
| 980 | EXPORT_SYMBOL(ipa_bridge_disconnect); |
| 981 | |
| 982 | int ipa_bridge_resume(u32 hdl) |
| 983 | { |
| 984 | int ret; |
| 985 | |
| 986 | if (!ipa_gsb_ctx) { |
| 987 | IPA_GSB_ERR("ipa_gsb_ctx was not initialized\n"); |
| 988 | return -EFAULT; |
| 989 | } |
| 990 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 991 | if (hdl >= MAX_SUPPORTED_IFACE) { |
| 992 | IPA_GSB_ERR("invalid hdl: %d\n", hdl); |
| 993 | return -EINVAL; |
| 994 | } |
| 995 | |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 996 | IPA_GSB_DBG_LOW("client hdl: %d\n", hdl); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 997 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 998 | mutex_lock(&ipa_gsb_ctx->iface_lock[hdl]); |
| 999 | if (!ipa_gsb_ctx->iface[hdl]) { |
| 1000 | IPA_GSB_ERR("fail to find interface, hdl: %d\n", hdl); |
| 1001 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
| 1002 | return -EFAULT; |
| 1003 | } |
| 1004 | |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1005 | if (!ipa_gsb_ctx->iface[hdl]->is_connected) { |
| 1006 | IPA_GSB_ERR("iface is not connected\n"); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1007 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1008 | return -EFAULT; |
| 1009 | } |
| 1010 | |
| 1011 | if (ipa_gsb_ctx->iface[hdl]->is_resumed) { |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 1012 | IPA_GSB_DBG_LOW("iface was already resumed\n"); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1013 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1014 | return 0; |
| 1015 | } |
| 1016 | |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 1017 | mutex_lock(&ipa_gsb_ctx->lock); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1018 | if (ipa_gsb_ctx->num_resumed_iface == 0) { |
| 1019 | ret = ipa_pm_activate_sync(ipa_gsb_ctx->pm_hdl); |
| 1020 | if (ret) { |
| 1021 | IPA_GSB_ERR("fail to activate ipa pm\n"); |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 1022 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1023 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1024 | return ret; |
| 1025 | } |
| 1026 | |
| 1027 | ret = ipa_start_gsi_channel( |
| 1028 | ipa_gsb_ctx->cons_hdl); |
| 1029 | if (ret) { |
| 1030 | IPA_GSB_ERR( |
| 1031 | "fail to start con ep %d\n", |
| 1032 | ret); |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 1033 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1034 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1035 | return ret; |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | ipa_gsb_ctx->iface[hdl]->is_resumed = true; |
| 1040 | ipa_gsb_ctx->num_resumed_iface++; |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 1041 | IPA_GSB_DBG_LOW("num resumed iface: %d\n", |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1042 | ipa_gsb_ctx->num_resumed_iface); |
| 1043 | |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 1044 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1045 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1046 | return 0; |
| 1047 | } |
| 1048 | EXPORT_SYMBOL(ipa_bridge_resume); |
| 1049 | |
| 1050 | int ipa_bridge_suspend(u32 hdl) |
| 1051 | { |
| 1052 | int ret; |
| 1053 | |
| 1054 | if (!ipa_gsb_ctx) { |
| 1055 | IPA_GSB_ERR("ipa_gsb_ctx was not initialized\n"); |
| 1056 | return -EFAULT; |
| 1057 | } |
| 1058 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1059 | if (hdl >= MAX_SUPPORTED_IFACE) { |
| 1060 | IPA_GSB_ERR("invalid hdl: %d\n", hdl); |
| 1061 | return -EINVAL; |
| 1062 | } |
| 1063 | |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 1064 | IPA_GSB_DBG_LOW("client hdl: %d\n", hdl); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1065 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1066 | mutex_lock(&ipa_gsb_ctx->iface_lock[hdl]); |
| 1067 | if (!ipa_gsb_ctx->iface[hdl]) { |
| 1068 | IPA_GSB_ERR("fail to find interface, hdl: %d\n", hdl); |
| 1069 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
| 1070 | return -EFAULT; |
| 1071 | } |
| 1072 | |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1073 | if (!ipa_gsb_ctx->iface[hdl]->is_connected) { |
| 1074 | IPA_GSB_ERR("iface is not connected\n"); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1075 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1076 | return -EFAULT; |
| 1077 | } |
| 1078 | |
| 1079 | if (!ipa_gsb_ctx->iface[hdl]->is_resumed) { |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 1080 | IPA_GSB_DBG_LOW("iface was already suspended\n"); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1081 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1082 | return 0; |
| 1083 | } |
| 1084 | |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 1085 | mutex_lock(&ipa_gsb_ctx->lock); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1086 | if (ipa_gsb_ctx->num_resumed_iface == 1) { |
| 1087 | ret = ipa_stop_gsi_channel( |
| 1088 | ipa_gsb_ctx->cons_hdl); |
| 1089 | if (ret) { |
| 1090 | IPA_GSB_ERR( |
| 1091 | "fail to stop cons ep %d\n", |
| 1092 | ret); |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 1093 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1094 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1095 | return ret; |
| 1096 | } |
| 1097 | |
| 1098 | ret = ipa_pm_deactivate_sync(ipa_gsb_ctx->pm_hdl); |
| 1099 | if (ret) { |
| 1100 | IPA_GSB_ERR("fail to deactivate ipa pm\n"); |
| 1101 | ipa_start_gsi_channel(ipa_gsb_ctx->cons_hdl); |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 1102 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1103 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1104 | return ret; |
| 1105 | } |
| 1106 | } |
| 1107 | |
| 1108 | ipa_gsb_ctx->iface[hdl]->is_resumed = false; |
| 1109 | ipa_gsb_ctx->num_resumed_iface--; |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 1110 | IPA_GSB_DBG_LOW("num resumed iface: %d\n", |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1111 | ipa_gsb_ctx->num_resumed_iface); |
| 1112 | |
Mohammed | c8a44de | 2018-10-30 19:13:29 +0530 | [diff] [blame^] | 1113 | mutex_unlock(&ipa_gsb_ctx->lock); |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1114 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1115 | return 0; |
| 1116 | } |
| 1117 | EXPORT_SYMBOL(ipa_bridge_suspend); |
| 1118 | |
| 1119 | int ipa_bridge_set_perf_profile(u32 hdl, u32 bandwidth) |
| 1120 | { |
| 1121 | int ret; |
| 1122 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1123 | if (!ipa_gsb_ctx) { |
| 1124 | IPA_GSB_ERR("ipa_gsb_ctx was not initialized\n"); |
| 1125 | return -EFAULT; |
| 1126 | } |
| 1127 | |
| 1128 | if (hdl >= MAX_SUPPORTED_IFACE) { |
| 1129 | IPA_GSB_ERR("invalid hdl: %d\n", hdl); |
| 1130 | return -EINVAL; |
| 1131 | } |
| 1132 | |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1133 | IPA_GSB_DBG("client hdl: %d, BW: %d\n", hdl, bandwidth); |
| 1134 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1135 | mutex_lock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1136 | |
| 1137 | ret = ipa_pm_set_perf_profile(ipa_gsb_ctx->pm_hdl, |
| 1138 | bandwidth); |
| 1139 | if (ret) |
| 1140 | IPA_GSB_ERR("fail to set perf profile\n"); |
| 1141 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1142 | mutex_unlock(&ipa_gsb_ctx->iface_lock[hdl]); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1143 | return ret; |
| 1144 | } |
| 1145 | EXPORT_SYMBOL(ipa_bridge_set_perf_profile); |
| 1146 | |
| 1147 | int ipa_bridge_tx_dp(u32 hdl, struct sk_buff *skb, |
| 1148 | struct ipa_tx_meta *metadata) |
| 1149 | { |
| 1150 | struct ipa_gsb_mux_hdr *mux_hdr; |
| 1151 | struct sk_buff *skb2; |
| 1152 | int ret; |
| 1153 | |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 1154 | IPA_GSB_DBG_LOW("client hdl: %d\n", hdl); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1155 | |
Bojun Pan | c858082 | 2018-06-27 17:33:31 -0700 | [diff] [blame] | 1156 | if (!ipa_gsb_ctx->iface[hdl]) { |
| 1157 | IPA_GSB_ERR("fail to find interface, hdl: %d\n", hdl); |
| 1158 | return -EFAULT; |
| 1159 | } |
| 1160 | |
Mohammed Javid | af75b0c | 2018-09-20 16:17:16 +0530 | [diff] [blame] | 1161 | if (unlikely(atomic_read(&ipa_gsb_ctx->disconnect_in_progress))) { |
| 1162 | IPA_GSB_ERR("ipa bridge disconnect_in_progress\n"); |
| 1163 | return -EFAULT; |
| 1164 | } |
| 1165 | |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1166 | /* make sure skb has enough headroom */ |
| 1167 | if (unlikely(skb_headroom(skb) < sizeof(struct ipa_gsb_mux_hdr))) { |
Bojun Pan | ffaf720 | 2018-05-31 16:16:25 -0700 | [diff] [blame] | 1168 | IPA_GSB_DBG_LOW("skb doesn't have enough headroom\n"); |
Shihuan Liu | fbc5186 | 2018-02-27 23:21:14 -0800 | [diff] [blame] | 1169 | skb2 = skb_copy_expand(skb, sizeof(struct ipa_gsb_mux_hdr), |
| 1170 | 0, GFP_ATOMIC); |
| 1171 | if (!skb2) { |
| 1172 | dev_kfree_skb_any(skb); |
| 1173 | return -ENOMEM; |
| 1174 | } |
| 1175 | dev_kfree_skb_any(skb); |
| 1176 | skb = skb2; |
| 1177 | ipa_gsb_ctx->iface[hdl]->iface_stats. |
| 1178 | num_insufficient_headroom_packets++; |
| 1179 | } |
| 1180 | |
| 1181 | /* add 4 byte header for mux */ |
| 1182 | mux_hdr = (struct ipa_gsb_mux_hdr *)skb_push(skb, |
| 1183 | sizeof(struct ipa_gsb_mux_hdr)); |
| 1184 | mux_hdr->iface_hdl = (u8)hdl; |
| 1185 | /* change to network order */ |
| 1186 | *(u32 *)mux_hdr = htonl(*(u32 *)mux_hdr); |
| 1187 | |
| 1188 | ret = ipa_tx_dp(IPA_CLIENT_ODU_PROD, skb, metadata); |
| 1189 | if (ret) { |
| 1190 | IPA_GSB_ERR("tx dp failed %d\n", ret); |
| 1191 | return -EFAULT; |
| 1192 | } |
| 1193 | ipa_gsb_ctx->iface[hdl]->iface_stats.num_ul_packets++; |
| 1194 | |
| 1195 | return 0; |
| 1196 | } |
| 1197 | EXPORT_SYMBOL(ipa_bridge_tx_dp); |
| 1198 | |
| 1199 | MODULE_LICENSE("GPL v2"); |
| 1200 | MODULE_DESCRIPTION("ipa gsb driver"); |