Andrew Jeffery | 4fe996c | 2018-02-27 12:16:48 +1030 | [diff] [blame] | 1 | // SPDX-License-Identifier: Apache-2.0 |
| 2 | // Copyright (C) 2018 IBM Corp. |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 3 | |
| 4 | #define _GNU_SOURCE |
| 5 | #include <assert.h> |
| 6 | #include <errno.h> |
| 7 | #include <fcntl.h> |
| 8 | #include <getopt.h> |
| 9 | #include <limits.h> |
| 10 | #include <poll.h> |
| 11 | #include <stdbool.h> |
| 12 | #include <stdint.h> |
| 13 | #include <stdio.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <string.h> |
| 16 | #include <syslog.h> |
| 17 | #include <signal.h> |
| 18 | #include <sys/ioctl.h> |
| 19 | #include <sys/mman.h> |
| 20 | #include <sys/stat.h> |
| 21 | #include <sys/timerfd.h> |
| 22 | #include <sys/types.h> |
| 23 | #include <time.h> |
| 24 | #include <unistd.h> |
| 25 | #include <inttypes.h> |
| 26 | |
Andrew Jeffery | 26558db | 2018-08-10 00:22:38 +0930 | [diff] [blame] | 27 | #include "mboxd.h" |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 28 | #include "common.h" |
Andrew Jeffery | 457a6e5 | 2018-08-08 11:21:08 +0930 | [diff] [blame] | 29 | #include "transport_mbox.h" |
Andrew Jeffery | f593b1b | 2018-08-08 11:01:04 +0930 | [diff] [blame] | 30 | #include "windows.h" |
Andrew Jeffery | cd18611 | 2018-08-08 10:47:55 +0930 | [diff] [blame] | 31 | #include "lpc.h" |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 32 | |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 33 | struct errno_map { |
| 34 | int rc; |
| 35 | int mbox_errno; |
| 36 | }; |
| 37 | |
| 38 | static const struct errno_map errno_map_v1[] = { |
| 39 | { 0, MBOX_R_SUCCESS }, |
| 40 | { EACCES, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 41 | { EBADMSG, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 42 | { EBUSY, MBOX_R_SYSTEM_ERROR }, |
| 43 | { EINVAL, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 44 | { ENOTSUP, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 45 | { EPERM, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 46 | { EPROTO, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 47 | { ETIMEDOUT, MBOX_R_TIMEOUT }, |
| 48 | { -1, MBOX_R_SYSTEM_ERROR }, |
| 49 | }; |
| 50 | |
| 51 | static const struct errno_map errno_map_v2[] = { |
| 52 | { 0, MBOX_R_SUCCESS }, |
Andrew Jeffery | c7d1947 | 2018-08-08 11:43:08 +0930 | [diff] [blame] | 53 | { EACCES, MBOX_R_WINDOW_ERROR }, |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 54 | { EBADMSG, MBOX_R_SEQ_ERROR }, |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 55 | { EBUSY, MBOX_R_BUSY }, |
| 56 | { EINVAL, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 57 | { ENOTSUP, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 58 | { EPERM, MBOX_R_WINDOW_ERROR }, |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 59 | { EPROTO, MBOX_R_PARAM_ERROR }, |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 60 | { ETIMEDOUT, MBOX_R_TIMEOUT }, |
| 61 | { -1, MBOX_R_SYSTEM_ERROR }, |
| 62 | }; |
| 63 | |
| 64 | static const struct errno_map *errno_maps[] = { |
| 65 | [0] = NULL, |
| 66 | [1] = errno_map_v1, |
| 67 | [2] = errno_map_v2, |
| 68 | }; |
| 69 | |
| 70 | static inline int mbox_xlate_errno(struct mbox_context *context, |
| 71 | int rc) |
| 72 | { |
| 73 | const struct errno_map *entry; |
| 74 | |
| 75 | rc = -rc; |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 76 | MSG_DBG("Translating errno %d: %s\n", rc, strerror(rc)); |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 77 | for(entry = errno_maps[context->version]; entry->rc != -1; entry++) { |
| 78 | if (rc == entry->rc) { |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 79 | return entry->mbox_errno; |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 80 | } |
| 81 | } |
| 82 | |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 83 | return entry->mbox_errno; |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 84 | } |
| 85 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 86 | /* |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 87 | * transport_mbox_flush_events() - Write to the BMC controlled status register |
| 88 | * (reg 15) |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 89 | * @context: The mbox context pointer |
| 90 | * |
| 91 | * Return: 0 on success otherwise negative error code |
| 92 | */ |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 93 | static int transport_mbox_flush_events(struct mbox_context *context) |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 94 | { |
| 95 | int rc; |
| 96 | |
| 97 | /* Seek mbox registers */ |
| 98 | rc = lseek(context->fds[MBOX_FD].fd, MBOX_BMC_EVENT, SEEK_SET); |
| 99 | if (rc != MBOX_BMC_EVENT) { |
| 100 | MSG_ERR("Couldn't lseek mbox to byte %d: %s\n", MBOX_BMC_EVENT, |
| 101 | strerror(errno)); |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 102 | return -errno; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | /* Write to mbox status register */ |
| 106 | rc = write(context->fds[MBOX_FD].fd, &context->bmc_events, 1); |
| 107 | if (rc != 1) { |
| 108 | MSG_ERR("Couldn't write to BMC status reg: %s\n", |
| 109 | strerror(errno)); |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 110 | return -errno; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | /* Reset to start */ |
| 114 | rc = lseek(context->fds[MBOX_FD].fd, 0, SEEK_SET); |
| 115 | if (rc) { |
| 116 | MSG_ERR("Couldn't reset MBOX offset to zero: %s\n", |
| 117 | strerror(errno)); |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 118 | return -errno; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | return 0; |
| 122 | } |
| 123 | |
Andrew Jeffery | 23a4821 | 2018-08-10 14:41:48 +0930 | [diff] [blame] | 124 | static const struct transport_ops transport_mbox_ops = { |
| 125 | .flush_events = transport_mbox_flush_events, |
| 126 | }; |
| 127 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 128 | /* Command Handlers */ |
| 129 | |
| 130 | /* |
| 131 | * Command: RESET_STATE |
Deepak Kodihalli | 017e45c | 2017-07-12 01:06:30 -0500 | [diff] [blame] | 132 | * Reset the LPC mapping to point back at the flash, or memory in case we're |
| 133 | * using a virtual pnor. |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 134 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 135 | static int mbox_handle_reset(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 136 | union mbox_regs *req, struct mbox_msg *resp) |
| 137 | { |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 138 | return context->protocol->reset(context); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 139 | } |
| 140 | |
| 141 | /* |
| 142 | * Command: GET_MBOX_INFO |
| 143 | * Get the API version, default window size and block size |
| 144 | * We also set the LPC mapping to point to the reserved memory region here so |
| 145 | * this command must be called before any window manipulation |
| 146 | * |
| 147 | * V1: |
| 148 | * ARGS[0]: API Version |
| 149 | * |
| 150 | * RESP[0]: API Version |
| 151 | * RESP[1:2]: Default read window size (number of blocks) |
| 152 | * RESP[3:4]: Default write window size (number of blocks) |
| 153 | * RESP[5]: Block size (as shift) |
| 154 | * |
| 155 | * V2: |
| 156 | * ARGS[0]: API Version |
| 157 | * |
| 158 | * RESP[0]: API Version |
| 159 | * RESP[1:2]: Default read window size (number of blocks) |
| 160 | * RESP[3:4]: Default write window size (number of blocks) |
| 161 | * RESP[5]: Block size (as shift) |
| 162 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 163 | static int mbox_handle_mbox_info(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 164 | union mbox_regs *req, struct mbox_msg *resp) |
| 165 | { |
| 166 | uint8_t mbox_api_version = req->msg.args[0]; |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 167 | struct protocol_get_info io = { |
| 168 | .req = { .api_version = mbox_api_version } |
| 169 | }; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 170 | int rc; |
| 171 | |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 172 | rc = context->protocol->get_info(context, &io); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 173 | if (rc < 0) { |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 174 | return rc; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 175 | } |
| 176 | |
Andrew Jeffery | 23a4821 | 2018-08-10 14:41:48 +0930 | [diff] [blame] | 177 | /* |
| 178 | * Switch transport to mbox, however we need to delay flushing the |
| 179 | * event state until after the command is processed. |
| 180 | */ |
| 181 | context->transport = &transport_mbox_ops; |
| 182 | |
Andrew Jeffery | 1e531af | 2018-08-07 13:32:57 +0930 | [diff] [blame] | 183 | resp->args[0] = io.resp.api_version; |
| 184 | if (io.resp.api_version == API_VERSION_1) { |
| 185 | put_u16(&resp->args[1], io.resp.v1.read_window_size); |
| 186 | put_u16(&resp->args[3], io.resp.v1.write_window_size); |
| 187 | } else if (io.resp.api_version >= API_VERSION_2) { |
| 188 | resp->args[5] = io.resp.v2.block_size_shift; |
| 189 | put_u16(&resp->args[6], io.resp.v2.timeout); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | /* |
| 196 | * Command: GET_FLASH_INFO |
| 197 | * Get the flash size and erase granularity |
| 198 | * |
| 199 | * V1: |
| 200 | * RESP[0:3]: Flash Size (bytes) |
| 201 | * RESP[4:7]: Erase Size (bytes) |
| 202 | * V2: |
| 203 | * RESP[0:1]: Flash Size (number of blocks) |
| 204 | * RESP[2:3]: Erase Size (number of blocks) |
| 205 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 206 | static int mbox_handle_flash_info(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 207 | union mbox_regs *req, struct mbox_msg *resp) |
| 208 | { |
Andrew Jeffery | 91a8745 | 2018-08-07 14:54:14 +0930 | [diff] [blame] | 209 | struct protocol_get_flash_info io; |
| 210 | int rc; |
| 211 | |
| 212 | rc = context->protocol->get_flash_info(context, &io); |
| 213 | if (rc < 0) { |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 214 | return rc; |
Andrew Jeffery | 91a8745 | 2018-08-07 14:54:14 +0930 | [diff] [blame] | 215 | } |
| 216 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 217 | switch (context->version) { |
| 218 | case API_VERSION_1: |
| 219 | /* Both Sizes in Bytes */ |
Andrew Jeffery | 91a8745 | 2018-08-07 14:54:14 +0930 | [diff] [blame] | 220 | put_u32(&resp->args[0], io.resp.v1.flash_size); |
| 221 | put_u32(&resp->args[4], io.resp.v1.erase_size); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 222 | break; |
| 223 | case API_VERSION_2: |
| 224 | /* Both Sizes in Block Size */ |
Andrew Jeffery | 91a8745 | 2018-08-07 14:54:14 +0930 | [diff] [blame] | 225 | put_u16(&resp->args[0], io.resp.v2.flash_size); |
| 226 | put_u16(&resp->args[2], io.resp.v2.erase_size); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 227 | break; |
| 228 | default: |
| 229 | MSG_ERR("API Version Not Valid - Invalid System State\n"); |
| 230 | return -MBOX_R_SYSTEM_ERROR; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 231 | } |
| 232 | |
| 233 | return 0; |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * get_lpc_addr_shifted() - Get lpc address of the current window |
| 238 | * @context: The mbox context pointer |
| 239 | * |
| 240 | * Return: The lpc address to access that offset shifted by block size |
| 241 | */ |
| 242 | static inline uint16_t get_lpc_addr_shifted(struct mbox_context *context) |
| 243 | { |
| 244 | uint32_t lpc_addr, mem_offset; |
| 245 | |
| 246 | /* Offset of the current window in the reserved memory region */ |
| 247 | mem_offset = context->current->mem - context->mem; |
| 248 | /* Total LPC Address */ |
| 249 | lpc_addr = context->lpc_base + mem_offset; |
| 250 | |
Suraj Jitindar Singh | 2851959 | 2017-04-27 14:48:58 +1000 | [diff] [blame] | 251 | MSG_DBG("LPC address of current window: 0x%.8x\n", lpc_addr); |
| 252 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 253 | return lpc_addr >> context->block_size_shift; |
| 254 | } |
| 255 | |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 256 | static int mbox_handle_create_window(struct mbox_context *context, bool ro, |
Andrew Jeffery | 4bcec8e | 2018-08-07 15:33:41 +0930 | [diff] [blame] | 257 | union mbox_regs *req, struct mbox_msg *resp) |
| 258 | { |
| 259 | struct protocol_create_window io; |
| 260 | int rc; |
| 261 | |
| 262 | io.req.offset = get_u16(&req->msg.args[0]); |
| 263 | io.req.ro = ro; |
| 264 | |
| 265 | rc = context->protocol->create_window(context, &io); |
| 266 | if (rc < 0) { |
| 267 | return rc; |
| 268 | } |
| 269 | |
| 270 | put_u16(&resp->args[0], io.resp.lpc_address); |
| 271 | if (context->version >= API_VERSION_2) { |
| 272 | put_u16(&resp->args[2], io.resp.size); |
| 273 | put_u16(&resp->args[4], io.resp.offset); |
| 274 | } |
| 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 279 | /* |
| 280 | * Command: CREATE_READ_WINDOW |
| 281 | * Opens a read window |
| 282 | * First checks if any current window with the requested data, if so we just |
| 283 | * point the host to that. Otherwise we read the request data in from flash and |
| 284 | * point the host there. |
| 285 | * |
| 286 | * V1: |
| 287 | * ARGS[0:1]: Window Location as Offset into Flash (number of blocks) |
| 288 | * |
| 289 | * RESP[0:1]: LPC bus address for host to access this window (number of blocks) |
| 290 | * |
| 291 | * V2: |
| 292 | * ARGS[0:1]: Window Location as Offset into Flash (number of blocks) |
| 293 | * ARGS[2:3]: Requested window size (number of blocks) |
| 294 | * |
| 295 | * RESP[0:1]: LPC bus address for host to access this window (number of blocks) |
| 296 | * RESP[2:3]: Actual window size that the host can access (number of blocks) |
| 297 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 298 | static int mbox_handle_read_window(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 299 | union mbox_regs *req, struct mbox_msg *resp) |
| 300 | { |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 301 | return mbox_handle_create_window(context, true, req, resp); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | /* |
| 305 | * Command: CREATE_WRITE_WINDOW |
| 306 | * Opens a write window |
| 307 | * First checks if any current window with the requested data, if so we just |
| 308 | * point the host to that. Otherwise we read the request data in from flash and |
| 309 | * point the host there. |
| 310 | * |
| 311 | * V1: |
| 312 | * ARGS[0:1]: Window Location as Offset into Flash (number of blocks) |
| 313 | * |
| 314 | * RESP[0:1]: LPC bus address for host to access this window (number of blocks) |
| 315 | * |
| 316 | * V2: |
| 317 | * ARGS[0:1]: Window Location as Offset into Flash (number of blocks) |
| 318 | * ARGS[2:3]: Requested window size (number of blocks) |
| 319 | * |
| 320 | * RESP[0:1]: LPC bus address for host to access this window (number of blocks) |
| 321 | * RESP[2:3]: Actual window size that was mapped/host can access (n.o. blocks) |
| 322 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 323 | static int mbox_handle_write_window(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 324 | union mbox_regs *req, struct mbox_msg *resp) |
| 325 | { |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 326 | return mbox_handle_create_window(context, false, req, resp); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Commands: MARK_WRITE_DIRTY |
| 331 | * Marks a portion of the current (write) window dirty, informing the daemon |
| 332 | * that is has been written to and thus must be at some point written to the |
| 333 | * backing store |
| 334 | * These changes aren't written back to the backing store unless flush is then |
| 335 | * called or the window closed |
| 336 | * |
| 337 | * V1: |
| 338 | * ARGS[0:1]: Where within flash to start (number of blocks) |
| 339 | * ARGS[2:5]: Number to mark dirty (number of bytes) |
| 340 | * |
| 341 | * V2: |
| 342 | * ARGS[0:1]: Where within window to start (number of blocks) |
| 343 | * ARGS[2:3]: Number to mark dirty (number of blocks) |
| 344 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 345 | static int mbox_handle_dirty_window(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 346 | union mbox_regs *req, struct mbox_msg *resp) |
| 347 | { |
Andrew Jeffery | a336e43 | 2018-08-07 16:00:40 +0930 | [diff] [blame] | 348 | struct protocol_mark_dirty io; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 349 | |
Andrew Jeffery | a336e43 | 2018-08-07 16:00:40 +0930 | [diff] [blame] | 350 | if (context->version == API_VERSION_1) { |
| 351 | io.req.v1.offset = get_u16(&req->msg.args[0]); |
| 352 | io.req.v1.size = get_u32(&req->msg.args[2]); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 353 | } else { |
Andrew Jeffery | a336e43 | 2018-08-07 16:00:40 +0930 | [diff] [blame] | 354 | io.req.v2.offset = get_u16(&req->msg.args[0]); |
| 355 | io.req.v2.size = get_u16(&req->msg.args[2]); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 356 | } |
| 357 | |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 358 | return context->protocol->mark_dirty(context, &io); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | /* |
| 362 | * Commands: MARK_WRITE_ERASE |
| 363 | * Erases a portion of the current window |
| 364 | * These changes aren't written back to the backing store unless flush is then |
| 365 | * called or the window closed |
| 366 | * |
| 367 | * V1: |
| 368 | * Unimplemented |
| 369 | * |
| 370 | * V2: |
| 371 | * ARGS[0:1]: Where within window to start (number of blocks) |
| 372 | * ARGS[2:3]: Number to erase (number of blocks) |
| 373 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 374 | static int mbox_handle_erase_window(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 375 | union mbox_regs *req, struct mbox_msg *resp) |
| 376 | { |
Andrew Jeffery | 62a3daa | 2018-08-07 22:30:32 +0930 | [diff] [blame] | 377 | struct protocol_erase io; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 378 | |
Andrew Jeffery | 62a3daa | 2018-08-07 22:30:32 +0930 | [diff] [blame] | 379 | io.req.offset = get_u16(&req->msg.args[0]); |
| 380 | io.req.size = get_u16(&req->msg.args[2]); |
| 381 | |
| 382 | if (!context->protocol->erase) { |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 383 | MSG_ERR("Protocol Version invalid for Erase Command\n"); |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 384 | return -ENOTSUP; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 385 | } |
| 386 | |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 387 | return context->protocol->erase(context, &io); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | /* |
| 391 | * Command: WRITE_FLUSH |
| 392 | * Flushes any dirty or erased blocks in the current window back to the backing |
| 393 | * store |
| 394 | * NOTE: For V1 this behaves much the same as the dirty command in that it |
| 395 | * takes an offset and number of blocks to dirty, then also performs a flush as |
| 396 | * part of the same command. For V2 this will only flush blocks already marked |
| 397 | * dirty/erased with the appropriate commands and doesn't take any arguments |
| 398 | * directly. |
| 399 | * |
| 400 | * V1: |
| 401 | * ARGS[0:1]: Where within window to start (number of blocks) |
| 402 | * ARGS[2:5]: Number to mark dirty (number of bytes) |
| 403 | * |
| 404 | * V2: |
| 405 | * NONE |
| 406 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 407 | static int mbox_handle_flush_window(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 408 | union mbox_regs *req, struct mbox_msg *resp) |
| 409 | { |
Andrew Jeffery | 9b920cf | 2018-08-07 22:49:19 +0930 | [diff] [blame] | 410 | struct protocol_flush io = { 0 }; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 411 | |
Andrew Jeffery | 9b920cf | 2018-08-07 22:49:19 +0930 | [diff] [blame] | 412 | if (context->version == API_VERSION_1) { |
| 413 | io.req.offset = get_u16(&req->msg.args[0]); |
| 414 | io.req.size = get_u32(&req->msg.args[2]); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 415 | } |
| 416 | |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 417 | return context->protocol->flush(context, &io); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | /* |
| 421 | * Command: CLOSE_WINDOW |
| 422 | * Close the current window |
| 423 | * NOTE: There is an implicit flush |
| 424 | * |
| 425 | * V1: |
| 426 | * NONE |
| 427 | * |
| 428 | * V2: |
| 429 | * ARGS[0]: FLAGS |
| 430 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 431 | static int mbox_handle_close_window(struct mbox_context *context, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 432 | union mbox_regs *req, struct mbox_msg *resp) |
| 433 | { |
Andrew Jeffery | 093eda5 | 2018-08-07 23:10:43 +0930 | [diff] [blame] | 434 | struct protocol_close io = { 0 }; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 435 | |
Andrew Jeffery | 093eda5 | 2018-08-07 23:10:43 +0930 | [diff] [blame] | 436 | if (context->version >= API_VERSION_2) { |
| 437 | io.req.flags = req->msg.args[0]; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 438 | } |
| 439 | |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 440 | return context->protocol->close(context, &io); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | /* |
| 444 | * Command: BMC_EVENT_ACK |
| 445 | * Sent by the host to acknowledge BMC events supplied in mailbox register 15 |
| 446 | * |
| 447 | * ARGS[0]: Bitmap of bits to ack (by clearing) |
| 448 | */ |
Andrew Jeffery | f21c81c | 2018-08-09 13:57:46 +0930 | [diff] [blame] | 449 | static int mbox_handle_ack(struct mbox_context *context, union mbox_regs *req, |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 450 | struct mbox_msg *resp) |
| 451 | { |
Andrew Jeffery | c5c8304 | 2018-08-07 23:22:05 +0930 | [diff] [blame] | 452 | struct protocol_ack io; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 453 | |
Andrew Jeffery | c5c8304 | 2018-08-07 23:22:05 +0930 | [diff] [blame] | 454 | io.req.flags = req->msg.args[0]; |
| 455 | |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 456 | return context->protocol->ack(context, &io); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 457 | } |
| 458 | |
| 459 | /* |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 460 | * check_req_valid() - Check if the given request is a valid mbox request |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 461 | * @context: The mbox context pointer |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 462 | * @cmd: The request registers |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 463 | * |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 464 | * Return: 0 if request is valid otherwise negative error code |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 465 | */ |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 466 | static int check_req_valid(struct mbox_context *context, union mbox_regs *req) |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 467 | { |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 468 | uint8_t cmd = req->msg.command; |
| 469 | uint8_t seq = req->msg.seq; |
| 470 | |
| 471 | if (cmd > NUM_MBOX_CMDS) { |
Andrew Jeffery | 121dc0d | 2017-04-24 16:15:06 +0930 | [diff] [blame] | 472 | MSG_ERR("Unknown mbox command: %d\n", cmd); |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 473 | return -ENOTSUP; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 474 | } |
Andrew Jeffery | 121dc0d | 2017-04-24 16:15:06 +0930 | [diff] [blame] | 475 | |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 476 | if (seq == context->prev_seq && cmd != MBOX_C_GET_MBOX_INFO) { |
Suraj Jitindar Singh | 2851959 | 2017-04-27 14:48:58 +1000 | [diff] [blame] | 477 | MSG_ERR("Invalid sequence number: %d, previous: %d\n", seq, |
| 478 | context->prev_seq); |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 479 | return -EBADMSG; |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 480 | } |
| 481 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 482 | if (context->state & STATE_SUSPENDED) { |
| 483 | if (cmd != MBOX_C_GET_MBOX_INFO && cmd != MBOX_C_ACK) { |
| 484 | MSG_ERR("Cannot use that cmd while suspended: %d\n", |
| 485 | cmd); |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 486 | return -EBUSY; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 487 | } |
| 488 | } |
Andrew Jeffery | 121dc0d | 2017-04-24 16:15:06 +0930 | [diff] [blame] | 489 | |
Andrew Jeffery | 23a4821 | 2018-08-10 14:41:48 +0930 | [diff] [blame] | 490 | if (context->transport != &transport_mbox_ops) { |
| 491 | if (cmd != MBOX_C_RESET_STATE && cmd != MBOX_C_GET_MBOX_INFO) { |
| 492 | MSG_ERR("Cannot switch transport with command %d\n", |
| 493 | cmd); |
| 494 | return -EPROTO; |
| 495 | } |
| 496 | } |
| 497 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 498 | if (!(context->state & MAPS_MEM)) { |
| 499 | if (cmd != MBOX_C_RESET_STATE && cmd != MBOX_C_GET_MBOX_INFO |
| 500 | && cmd != MBOX_C_ACK) { |
Andrew Jeffery | 121dc0d | 2017-04-24 16:15:06 +0930 | [diff] [blame] | 501 | MSG_ERR("Must call GET_MBOX_INFO before %d\n", cmd); |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 502 | return -EPROTO; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 503 | } |
| 504 | } |
| 505 | |
| 506 | return 0; |
| 507 | } |
| 508 | |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 509 | typedef int (*mboxd_mbox_handler)(struct mbox_context *, union mbox_regs *, |
| 510 | struct mbox_msg *); |
| 511 | |
| 512 | static const mboxd_mbox_handler transport_mbox_handlers[] = { |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 513 | mbox_handle_reset, |
| 514 | mbox_handle_mbox_info, |
| 515 | mbox_handle_flash_info, |
| 516 | mbox_handle_read_window, |
| 517 | mbox_handle_close_window, |
| 518 | mbox_handle_write_window, |
| 519 | mbox_handle_dirty_window, |
| 520 | mbox_handle_flush_window, |
| 521 | mbox_handle_ack, |
| 522 | mbox_handle_erase_window |
| 523 | }; |
| 524 | |
| 525 | /* |
| 526 | * handle_mbox_req() - Handle an incoming mbox command request |
| 527 | * @context: The mbox context pointer |
| 528 | * @req: The mbox request message |
| 529 | * |
| 530 | * Return: 0 if handled successfully otherwise negative error code |
| 531 | */ |
| 532 | static int handle_mbox_req(struct mbox_context *context, union mbox_regs *req) |
| 533 | { |
Andrew Jeffery | 23a4821 | 2018-08-10 14:41:48 +0930 | [diff] [blame] | 534 | const struct transport_ops *old_transport = context->transport; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 535 | struct mbox_msg resp = { |
| 536 | .command = req->msg.command, |
| 537 | .seq = req->msg.seq, |
| 538 | .args = { 0 }, |
| 539 | .response = MBOX_R_SUCCESS |
| 540 | }; |
Suraj Jitindar Singh | 2851959 | 2017-04-27 14:48:58 +1000 | [diff] [blame] | 541 | int rc = 0, len, i; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 542 | |
Suraj Jitindar Singh | 2851959 | 2017-04-27 14:48:58 +1000 | [diff] [blame] | 543 | MSG_INFO("Received MBOX command: %u\n", req->msg.command); |
Andrew Jeffery | 23a4821 | 2018-08-10 14:41:48 +0930 | [diff] [blame] | 544 | |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 545 | rc = check_req_valid(context, req); |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 546 | if (!rc) { |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 547 | mboxd_mbox_handler handler; |
| 548 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 549 | /* Commands start at 1 so we have to subtract 1 from the cmd */ |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 550 | handler = transport_mbox_handlers[req->msg.command - 1]; |
| 551 | rc = handler(context, req, &resp); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 552 | if (rc < 0) { |
| 553 | MSG_ERR("Error handling mbox cmd: %d\n", |
| 554 | req->msg.command); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 555 | } |
| 556 | } |
| 557 | |
Andrew Jeffery | 2f1477c | 2018-08-09 23:24:38 +0930 | [diff] [blame] | 558 | rc = mbox_xlate_errno(context, rc); |
| 559 | resp.response = rc; |
Andrew Jeffery | 55dede6 | 2017-04-24 16:13:06 +0930 | [diff] [blame] | 560 | context->prev_seq = req->msg.seq; |
| 561 | |
Suraj Jitindar Singh | 2851959 | 2017-04-27 14:48:58 +1000 | [diff] [blame] | 562 | MSG_DBG("Writing MBOX response:\n"); |
| 563 | MSG_DBG("MBOX cmd: %u\n", resp.command); |
| 564 | MSG_DBG("MBOX seq: %u\n", resp.seq); |
| 565 | for (i = 0; i < MBOX_ARGS_BYTES; i++) { |
| 566 | MSG_DBG("MBOX arg[%d]: 0x%.2x\n", i, resp.args[i]); |
| 567 | } |
| 568 | MSG_INFO("Writing MBOX response: %u\n", resp.response); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 569 | len = write(context->fds[MBOX_FD].fd, &resp, sizeof(resp)); |
| 570 | if (len < sizeof(resp)) { |
| 571 | MSG_ERR("Didn't write the full response\n"); |
| 572 | rc = -errno; |
| 573 | } |
| 574 | |
Andrew Jeffery | 23a4821 | 2018-08-10 14:41:48 +0930 | [diff] [blame] | 575 | if (context->transport != old_transport && |
| 576 | context->transport == &transport_mbox_ops) { |
| 577 | transport_mbox_flush_events(context); |
| 578 | } |
| 579 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 580 | return rc; |
| 581 | } |
| 582 | |
| 583 | /* |
| 584 | * get_message() - Read an mbox request message from the mbox registers |
| 585 | * @context: The mbox context pointer |
| 586 | * @msg: Where to put the received message |
| 587 | * |
| 588 | * Return: 0 if read successfully otherwise negative error code |
| 589 | */ |
| 590 | static int get_message(struct mbox_context *context, union mbox_regs *msg) |
| 591 | { |
Suraj Jitindar Singh | 2851959 | 2017-04-27 14:48:58 +1000 | [diff] [blame] | 592 | int rc, i; |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 593 | |
| 594 | rc = read(context->fds[MBOX_FD].fd, msg, sizeof(msg->raw)); |
| 595 | if (rc < 0) { |
| 596 | MSG_ERR("Couldn't read: %s\n", strerror(errno)); |
| 597 | return -errno; |
| 598 | } else if (rc < sizeof(msg->raw)) { |
| 599 | MSG_ERR("Short read: %d expecting %zu\n", rc, sizeof(msg->raw)); |
| 600 | return -1; |
| 601 | } |
| 602 | |
Suraj Jitindar Singh | 2851959 | 2017-04-27 14:48:58 +1000 | [diff] [blame] | 603 | MSG_DBG("Received MBOX request:\n"); |
| 604 | MSG_DBG("MBOX cmd: %u\n", msg->msg.command); |
| 605 | MSG_DBG("MBOX seq: %u\n", msg->msg.seq); |
| 606 | for (i = 0; i < MBOX_ARGS_BYTES; i++) { |
| 607 | MSG_DBG("MBOX arg[%d]: 0x%.2x\n", i, msg->msg.args[i]); |
| 608 | } |
| 609 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 610 | return 0; |
| 611 | } |
| 612 | |
| 613 | /* |
Andrew Jeffery | d86141b | 2018-08-09 14:58:53 +0930 | [diff] [blame] | 614 | * transport_mbox_dispatch() - handle an mbox interrupt |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 615 | * @context: The mbox context pointer |
| 616 | * |
| 617 | * Return: 0 if handled successfully otherwise negative error code |
| 618 | */ |
Andrew Jeffery | d86141b | 2018-08-09 14:58:53 +0930 | [diff] [blame] | 619 | int transport_mbox_dispatch(struct mbox_context *context) |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 620 | { |
| 621 | int rc = 0; |
| 622 | union mbox_regs req = { 0 }; |
| 623 | |
| 624 | assert(context); |
| 625 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 626 | rc = get_message(context, &req); |
| 627 | if (rc) { |
| 628 | return rc; |
| 629 | } |
| 630 | |
| 631 | return handle_mbox_req(context, &req); |
| 632 | } |
| 633 | |
Andrew Jeffery | b2466ee | 2018-08-09 15:03:27 +0930 | [diff] [blame] | 634 | int __transport_mbox_init(struct mbox_context *context, const char *path) |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 635 | { |
| 636 | int fd; |
| 637 | |
Andrew Jeffery | 5335f09 | 2018-08-09 14:56:08 +0930 | [diff] [blame] | 638 | context->transport = &transport_mbox_ops; |
Andrew Jeffery | efb09de | 2018-03-26 14:36:43 +1030 | [diff] [blame] | 639 | |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 640 | /* Open MBOX Device */ |
Andrew Jeffery | 913740f | 2017-04-10 23:51:07 +0930 | [diff] [blame] | 641 | fd = open(path, O_RDWR | O_NONBLOCK); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 642 | if (fd < 0) { |
| 643 | MSG_ERR("Couldn't open %s with flags O_RDWR: %s\n", |
Andrew Jeffery | 913740f | 2017-04-10 23:51:07 +0930 | [diff] [blame] | 644 | path, strerror(errno)); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 645 | return -errno; |
| 646 | } |
Suraj Jitindar Singh | 2851959 | 2017-04-27 14:48:58 +1000 | [diff] [blame] | 647 | MSG_DBG("Opened mbox dev: %s\n", path); |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 648 | |
| 649 | context->fds[MBOX_FD].fd = fd; |
| 650 | |
| 651 | return 0; |
| 652 | } |
| 653 | |
Andrew Jeffery | b2466ee | 2018-08-09 15:03:27 +0930 | [diff] [blame] | 654 | int transport_mbox_init(struct mbox_context *context) |
Andrew Jeffery | 913740f | 2017-04-10 23:51:07 +0930 | [diff] [blame] | 655 | { |
Andrew Jeffery | b2466ee | 2018-08-09 15:03:27 +0930 | [diff] [blame] | 656 | return __transport_mbox_init(context, MBOX_HOST_PATH); |
Andrew Jeffery | 913740f | 2017-04-10 23:51:07 +0930 | [diff] [blame] | 657 | } |
| 658 | |
Andrew Jeffery | 55260ce | 2018-08-09 15:05:59 +0930 | [diff] [blame] | 659 | void transport_mbox_free(struct mbox_context *context) |
Suraj Jitindar Singh | e39c916 | 2017-03-28 10:47:43 +1100 | [diff] [blame] | 660 | { |
| 661 | close(context->fds[MBOX_FD].fd); |
| 662 | } |