src/firmware/config.c

   1 //      Copyright (C) 2014 Michael McMaster <michael@codesrc.com>\r
   2 //\r
   3 //      This file is part of SCSI2SD.\r
   4 //\r
   5 //      SCSI2SD is free software: you can redistribute it and/or modify\r
   6 //      it under the terms of the GNU General Public License as published by\r
   7 //      the Free Software Foundation, either version 3 of the License, or\r
   8 //      (at your option) any later version.\r
   9 //\r
  10 //      SCSI2SD is distributed in the hope that it will be useful,\r
  11 //      but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  12 //      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  13 //      GNU General Public License for more details.\r
  14 //\r
  15 //      You should have received a copy of the GNU General Public License\r
  16 //      along with SCSI2SD.  If not, see <http://www.gnu.org/licenses/>.\r
  17 \r
  18 #include "config.h"\r
  19 #include "led.h"\r
  20 \r
  21 #include "scsi.h"\r
  22 #include "scsiPhy.h"\r
  23 #include "sd.h"\r
  24 #include "disk.h"\r
  25 #include "trace.h"\r
  26 #include "bootloader.h"\r
  27 #include "bsp.h"\r
  28 \r
  29 #include "../../include/scsi2sd.h"\r
  30 #include "../../include/hidpacket.h"\r
  31 \r
  32 #include "usb_device/usb_device.h"\r
  33 #include "usb_device/usbd_hid.h"\r
  34 #include "usb_device/usbd_composite.h"\r
  35 #include "bsp_driver_sd.h"\r
  36 \r
  37 \r
  38 #include <string.h>\r
  39 \r
  40 static const uint16_t FIRMWARE_VERSION = 0x060A;\r
  41 \r
  42 // 1 flash row\r
  43 static const uint8_t DEFAULT_CONFIG[128] =\r
  44 {\r
  45         0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x3F, 0x00,\r
  46         0x00, 0x02, 0x3F, 0x00, 0xFF, 0x00, 0x20, 0x63, 0x6F, 0x64, 0x65, 0x73,\r
  47         0x72, 0x63, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x53,\r
  48         0x43, 0x53, 0x49, 0x32, 0x53, 0x44, 0x20, 0x31, 0x2E, 0x30, 0x31, 0x32,\r
  49         0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36,\r
  50         0x37, 0x38, 0x00, 0x00\r
  51 };\r
  52 \r
  53 \r
  54 static uint8_t s2s_cfg[S2S_CFG_SIZE] S2S_DMA_ALIGN;\r
  55 static uint8_t configDmaBuf[512] S2S_DMA_ALIGN; // For SD card writes.\r
  56 \r
  57 \r
  58 enum USB_STATE\r
  59 {\r
  60         USB_IDLE,\r
  61         USB_DATA_SENT\r
  62 };\r
  63 \r
  64 \r
  65 static int usbInEpState;\r
  66 \r
  67 void s2s_configInit(S2S_BoardCfg* config)\r
  68 {\r
  69 \r
  70         usbInEpState = USB_IDLE;\r
  71 \r
  72 \r
  73         if ((blockDev.state & DISK_PRESENT) && sdDev.capacity)\r
  74         {\r
  75                 int cfgSectors = (S2S_CFG_SIZE + 511) / 512;\r
  76                 BSP_SD_ReadBlocks_DMA(\r
  77                         (uint32_t*) &s2s_cfg[0],\r
  78                         (sdDev.capacity - cfgSectors) * 512ll,\r
  79                         512,\r
  80                         cfgSectors);\r
  81 \r
  82                 memcpy(config, s2s_cfg, sizeof(S2S_BoardCfg));\r
  83 \r
  84                 if (memcmp(config->magic, "BCFG", 4))\r
  85                 {\r
  86                         // Invalid SD card config, use default.\r
  87                         memset(&s2s_cfg[0], 0, S2S_CFG_SIZE);\r
  88                         memcpy(config, s2s_cfg, sizeof(S2S_BoardCfg));\r
  89                         memcpy(config->magic, "BCFG", 4);\r
  90                         config->selectionDelay = 255; // auto\r
  91                         config->flags6 = S2S_CFG_ENABLE_TERMINATOR;\r
  92 \r
  93                         memcpy(\r
  94                                 &s2s_cfg[0] + sizeof(S2S_BoardCfg),\r
  95                                 DEFAULT_CONFIG,\r
  96                                 sizeof(S2S_TargetCfg));\r
  97                 }\r
  98         }\r
  99         else\r
 100         {\r
 101                 // No SD card, use existing config if valid\r
 102                 if (memcmp(config->magic, "BCFG", 4))\r
 103                 {\r
 104                         // Not valid, use empty config with no disks.\r
 105                         memset(&s2s_cfg[0], 0, S2S_CFG_SIZE);\r
 106                         memcpy(config, s2s_cfg, sizeof(S2S_BoardCfg));\r
 107                         config->selectionDelay = 255; // auto\r
 108                         config->flags6 = S2S_CFG_ENABLE_TERMINATOR;\r
 109                 }\r
 110         }\r
 111 \r
 112 }\r
 113 \r
 114 \r
 115 static void\r
 116 pingCommand()\r
 117 {\r
 118         uint8_t response[] =\r
 119         {\r
 120                 S2S_CFG_STATUS_GOOD\r
 121         };\r
 122         hidPacket_send(response, sizeof(response));\r
 123 }\r
 124 \r
 125 static void\r
 126 sdInfoCommand()\r
 127 {\r
 128         uint8_t response[sizeof(sdDev.csd) + sizeof(sdDev.cid)];\r
 129         memcpy(response, sdDev.csd, sizeof(sdDev.csd));\r
 130         memcpy(response + sizeof(sdDev.csd), sdDev.cid, sizeof(sdDev.cid));\r
 131 \r
 132         hidPacket_send(response, sizeof(response));\r
 133 }\r
 134 \r
 135 \r
 136 static void\r
 137 scsiTestCommand()\r
 138 {\r
 139         int resultCode = scsiSelfTest();\r
 140         uint8_t response[] =\r
 141         {\r
 142                 resultCode == 0 ? S2S_CFG_STATUS_GOOD : S2S_CFG_STATUS_ERR,\r
 143                 resultCode\r
 144         };\r
 145         hidPacket_send(response, sizeof(response));\r
 146 }\r
 147 \r
 148 static void\r
 149 scsiDevInfoCommand()\r
 150 {\r
 151         uint8_t response[] =\r
 152         {\r
 153                 FIRMWARE_VERSION >> 8,\r
 154                 FIRMWARE_VERSION & 0xff,\r
 155                 sdDev.capacity >> 24,\r
 156                 sdDev.capacity >> 16,\r
 157                 sdDev.capacity >> 8,\r
 158                 sdDev.capacity\r
 159         };\r
 160         hidPacket_send(response, sizeof(response));\r
 161 }\r
 162 \r
 163 static void\r
 164 debugCommand()\r
 165 {\r
 166         uint8_t response[32];\r
 167         memcpy(&response, &scsiDev.cdb, 12);\r
 168         response[12] = scsiDev.msgIn;\r
 169         response[13] = scsiDev.msgOut;\r
 170         response[14] = scsiDev.lastStatus;\r
 171         response[15] = scsiDev.lastSense;\r
 172         response[16] = scsiDev.phase;\r
 173         response[17] = scsiStatusBSY();\r
 174         response[18] = scsiStatusSEL();\r
 175         response[19] = scsiStatusATN();\r
 176         response[20] = scsiStatusRST();\r
 177         response[21] = scsiDev.rstCount;\r
 178         response[22] = scsiDev.selCount;\r
 179         response[23] = scsiDev.msgCount;\r
 180         response[24] = scsiDev.cmdCount;\r
 181         response[25] = scsiDev.watchdogTick;\r
 182         response[26] = blockDev.state;\r
 183         response[27] = scsiDev.lastSenseASC >> 8;\r
 184         response[28] = scsiDev.lastSenseASC;\r
 185         response[29] = *SCSI_STS_DBX;\r
 186         response[30] = LastTrace;\r
 187         response[31] = scsiStatusACK();\r
 188         hidPacket_send(response, sizeof(response));\r
 189 }\r
 190 \r
 191 static void\r
 192 sdWriteCommand(const uint8_t* cmd, size_t cmdSize)\r
 193 {\r
 194         if (cmdSize < 517)\r
 195         {\r
 196                 return; // ignore.\r
 197         }\r
 198         uint32_t lba =\r
 199                 (((uint32_t)cmd[1]) << 24) |\r
 200                 (((uint32_t)cmd[2]) << 16) |\r
 201                 (((uint32_t)cmd[3]) << 8) |\r
 202                 ((uint32_t)cmd[4]);\r
 203 \r
 204         memcpy(configDmaBuf, &cmd[5], 512);\r
 205         BSP_SD_WriteBlocks_DMA((uint32_t*) configDmaBuf, lba * 512ll, 512, 1);\r
 206 \r
 207         uint8_t response[] =\r
 208         {\r
 209                 S2S_CFG_STATUS_GOOD\r
 210         };\r
 211         hidPacket_send(response, sizeof(response));\r
 212 }\r
 213 \r
 214 static void\r
 215 sdReadCommand(const uint8_t* cmd, size_t cmdSize)\r
 216 {\r
 217         if (cmdSize < 5)\r
 218         {\r
 219                 return; // ignore.\r
 220         }\r
 221         uint32_t lba =\r
 222                 (((uint32_t)cmd[1]) << 24) |\r
 223                 (((uint32_t)cmd[2]) << 16) |\r
 224                 (((uint32_t)cmd[3]) << 8) |\r
 225                 ((uint32_t)cmd[4]);\r
 226 \r
 227         BSP_SD_ReadBlocks_DMA((uint32_t*) configDmaBuf, lba * 512ll, 512, 1);\r
 228         hidPacket_send(configDmaBuf, 512);\r
 229 }\r
 230 \r
 231 static void\r
 232 processCommand(const uint8_t* cmd, size_t cmdSize)\r
 233 {\r
 234         switch (cmd[0])\r
 235         {\r
 236         case S2S_CMD_PING:\r
 237                 pingCommand();\r
 238                 break;\r
 239 \r
 240         case S2S_CMD_REBOOT:\r
 241                 s2s_enterBootloader();\r
 242                 break;\r
 243 \r
 244         case S2S_CMD_SDINFO:\r
 245                 sdInfoCommand();\r
 246                 break;\r
 247 \r
 248         case S2S_CMD_SCSITEST:\r
 249                 scsiTestCommand();\r
 250                 break;\r
 251 \r
 252         case S2S_CMD_DEVINFO:\r
 253                 scsiDevInfoCommand();\r
 254                 break;\r
 255 \r
 256         case S2S_CMD_SD_WRITE:\r
 257                 sdWriteCommand(cmd, cmdSize);\r
 258                 break;\r
 259 \r
 260         case S2S_CMD_SD_READ:\r
 261                 sdReadCommand(cmd, cmdSize);\r
 262                 break;\r
 263 \r
 264         case S2S_CMD_DEBUG:\r
 265                 debugCommand();\r
 266                 break;\r
 267 \r
 268         case S2S_CMD_NONE: // invalid\r
 269         default:\r
 270                 break;\r
 271         }\r
 272 }\r
 273 \r
 274 void s2s_configPoll()\r
 275 {\r
 276         if (!USBD_Composite_IsConfigured(&hUsbDeviceFS))\r
 277         {\r
 278                 usbInEpState = USB_IDLE;\r
 279                 return;\r
 280         }\r
 281 \r
 282         if (USBD_HID_IsReportReady(&hUsbDeviceFS))\r
 283         {\r
 284                 s2s_ledOn();\r
 285 \r
 286                 // The host sent us some data!\r
 287                 uint8_t hidBuffer[USBHID_LEN];\r
 288                 int byteCount = USBD_HID_GetReport(&hUsbDeviceFS, hidBuffer, sizeof(hidBuffer));\r
 289                 hidPacket_recv(hidBuffer, byteCount);\r
 290 \r
 291                 size_t cmdSize;\r
 292                 const uint8_t* cmd = hidPacket_getPacket(&cmdSize);\r
 293                 if (cmd && (cmdSize > 0))\r
 294                 {\r
 295                         processCommand(cmd, cmdSize);\r
 296                 }\r
 297 \r
 298                 s2s_ledOff();\r
 299         }\r
 300 \r
 301         switch (usbInEpState)\r
 302         {\r
 303         case USB_IDLE:\r
 304                 {\r
 305                         uint8_t hidBuffer[USBHID_LEN];\r
 306                         const uint8_t* nextChunk = hidPacket_getHIDBytes(hidBuffer);\r
 307 \r
 308                         if (nextChunk)\r
 309                         {\r
 310                                 USBD_HID_SendReport (&hUsbDeviceFS, nextChunk, sizeof(hidBuffer));\r
 311                                 usbInEpState = USB_DATA_SENT;\r
 312                         }\r
 313                 }\r
 314                 break;\r
 315 \r
 316         case USB_DATA_SENT:\r
 317                 if (!USBD_HID_IsBusy(&hUsbDeviceFS))\r
 318                 {\r
 319                         // Data accepted.\r
 320                         usbInEpState = USB_IDLE;\r
 321                 }\r
 322                 break;\r
 323         }\r
 324 \r
 325 }\r
 326 \r
 327 \r
 328 \r
 329 // Public method for storing MODE SELECT results.\r
 330 void s2s_configSave(int scsiId, uint16_t bytesPerSector)\r
 331 {\r
 332         S2S_TargetCfg* cfg = (S2S_TargetCfg*) s2s_getConfigById(scsiId);\r
 333         cfg->bytesPerSector = bytesPerSector;\r
 334 \r
 335         BSP_SD_WriteBlocks_DMA(\r
 336                 (uint32_t*) &s2s_cfg[0],\r
 337                 (sdDev.capacity - S2S_CFG_SIZE) * 512ll,\r
 338                 512,\r
 339                 (S2S_CFG_SIZE + 511) / 512);\r
 340 }\r
 341 \r
 342 \r
 343 const S2S_TargetCfg* s2s_getConfigByIndex(int i)\r
 344 {\r
 345         return (const S2S_TargetCfg*)\r
 346                 (s2s_cfg + sizeof(S2S_BoardCfg) + (i * sizeof(S2S_TargetCfg)));\r
 347 }\r
 348 \r
 349 const S2S_TargetCfg* s2s_getConfigById(int scsiId)\r
 350 {\r
 351         int i;\r
 352         for (i = 0; i < S2S_MAX_TARGETS; ++i)\r
 353         {\r
 354                 const S2S_TargetCfg* tgt = s2s_getConfigByIndex(i);\r
 355                 if ((tgt->scsiId & S2S_CFG_TARGET_ID_BITS) == scsiId)\r
 356                 {\r
 357                         return tgt;\r
 358                 }\r
 359         }\r
 360         return NULL;\r
 361 \r
 362 }\r
 363 \r