9 #include "piscsi-enums.h"
10 #include "../hunk-reloc.h"
11 #include "../../../config_file/config_file.h"
12 #include "../../../gpio/ps_protocol.h"
14 // Comment this line to restore debug output:
21 extern struct emulator_config *cfg;
22 extern void stop_cpu_emulation(uint8_t disasm_cur);
24 struct piscsi_dev devs[8];
25 uint8_t piscsi_cur_drive = 0;
26 uint32_t piscsi_u32[4];
27 uint32_t piscsi_dbg[8];
28 uint32_t piscsi_rom_size = 0;
29 uint8_t *piscsi_rom_ptr;
31 extern unsigned char ac_piscsi_rom[];
33 static const char *op_type_names[4] = {
40 //static const char *partition_marker = "PART";
42 struct hunk_info piscsi_hinfo;
43 struct hunk_reloc piscsi_hreloc[256];
46 for (int i = 0; i < 8; i++) {
49 devs[i].c = devs[i].h = devs[i].s = 0;
52 FILE *in = fopen("./platforms/amiga/piscsi/piscsi.rom", "rb");
54 printf("[PISCSI] Could not open PISCSI Boot ROM file for reading.\n");
55 // Zero out the boot ROM offset from the autoconfig ROM.
56 ac_piscsi_rom[20] = 0;
57 ac_piscsi_rom[21] = 0;
58 ac_piscsi_rom[22] = 0;
59 ac_piscsi_rom[23] = 0;
62 fseek(in, 0, SEEK_END);
63 piscsi_rom_size = ftell(in);
64 fseek(in, 0, SEEK_SET);
65 piscsi_rom_ptr = malloc(piscsi_rom_size);
66 fread(piscsi_rom_ptr, piscsi_rom_size, 1, in);
69 // Parse the hunks in the device driver to find relocation offsets
70 in = fopen("./platforms/amiga/piscsi/device_driver_amiga/pi-scsi.device", "rb");
71 fseek(in, 0x0, SEEK_SET);
72 process_hunks(in, &piscsi_hinfo, piscsi_hreloc);
75 printf("[PISCSI] Loaded Boot ROM.\n");
78 void piscsi_find_partitions(struct piscsi_dev *d) {
80 char *block = malloc(512);
81 int cur_partition = 0;
84 if (!d->rdb || d->rdb->rdb_PartitionList == 0) {
85 printf("[PISCSI] No partitions on disk.\n");
89 lseek(fd, be32toh(d->rdb->rdb_PartitionList) * 512, SEEK_SET);
93 struct PartitionBlock *pb = (struct PartitionBlock *)block;
94 tmp = pb->pb_DriveName[0];
95 pb->pb_DriveName[tmp + 1] = 0x00;
96 printf("Partition %d: %s\n", cur_partition, pb->pb_DriveName + 1);
97 d->pb[cur_partition] = pb;
99 if (d->pb[cur_partition]->pb_Next != 0xFFFFFFFF) {
100 uint64_t next = be32toh(pb->pb_Next);
102 lseek64(fd, next * 512, SEEK_SET);
104 printf("Next partition at block %d.\n", be32toh(pb->pb_Next));
107 printf("No more partitions on disk.\n");
112 int piscsi_parse_rdb(struct piscsi_dev *d) {
115 uint8_t *block = malloc(512);
117 lseek(fd, 0, SEEK_SET);
118 for (i = 0; i < RDB_BLOCK_LIMIT; i++) {
119 read(fd, block, 512);
120 uint32_t first = be32toh(*((uint32_t *)&block[0]));
121 if (first == RDB_IDENTIFIER)
124 printf("Block %d is not RDB, looking for %.8X, found %.8X\n", i, RDB_IDENTIFIER, first);
129 struct RigidDiskBlock *rdb = (struct RigidDiskBlock *)block;
130 printf("[PISCSI] RDB found at block %d.\n", i);
131 d->c = be32toh(rdb->rdb_Cylinders);
132 d->h = be32toh(rdb->rdb_Heads);
133 d->s = be32toh(rdb->rdb_Sectors);
134 printf("[PISCSI] RDB - first partition at block %d.\n", be32toh(rdb->rdb_PartitionList));
136 sprintf(d->rdb->rdb_DriveInitName, "pi-scsi.device");
146 void piscsi_map_drive(char *filename, uint8_t index) {
148 printf("[PISCSI] Drive index %d out of range.\nUnable to map file %s to drive.\n", index, filename);
152 int32_t tmp_fd = open(filename, O_RDWR);
154 printf("[PISCSI] Failed to open file %s, could not map drive %d.\n", filename, index);
158 struct piscsi_dev *d = &devs[index];
160 uint64_t file_size = lseek(tmp_fd, 0, SEEK_END);
163 lseek(tmp_fd, 0, SEEK_SET);
164 printf("[PISCSI] Map %d: [%s] - %llu bytes.\n", index, filename, file_size);
166 if (piscsi_parse_rdb(d) == -1) {
167 printf("[PISCSI] No RDB found on disk, making up some CHS values.\n");
170 d->c = (file_size / 512) / (d->s * d->h);
172 printf("[PISCSI] CHS: %d %d %d\n", d->c, d->h, d->s);
174 piscsi_find_partitions(d);
175 //stop_cpu_emulation(1);
178 void piscsi_unmap_drive(uint8_t index) {
179 if (devs[index].fd != -1) {
180 printf("[PISCSI] Unmapped drive %d.\n", index);
181 close (devs[index].fd);
186 char *io_cmd_name(int index) {
188 case CMD_INVALID: return "INVALID";
189 case CMD_RESET: return "RESET";
190 case CMD_READ: return "READ";
191 case CMD_WRITE: return "WRITE";
192 case CMD_UPDATE: return "UPDATE";
193 case CMD_CLEAR: return "CLEAR";
194 case CMD_STOP: return "STOP";
195 case CMD_START: return "START";
196 case CMD_FLUSH: return "FLUSH";
197 case TD_MOTOR: return "TD_MOTOR";
198 case TD_SEEK: return "SEEK";
199 case TD_FORMAT: return "FORMAT";
200 case TD_REMOVE: return "REMOVE";
201 case TD_CHANGENUM: return "CHANGENUM";
202 case TD_CHANGESTATE: return "CHANGESTATE";
203 case TD_PROTSTATUS: return "PROTSTATUS";
204 case TD_RAWREAD: return "RAWREAD";
205 case TD_RAWWRITE: return "RAWWRITE";
206 case TD_GETDRIVETYPE: return "GETDRIVETYPE";
207 case TD_GETNUMTRACKS: return "GETNUMTRACKS";
208 case TD_ADDCHANGEINT: return "ADDCHANGEINT";
209 case TD_REMCHANGEINT: return "REMCHANGEINT";
210 case TD_GETGEOMETRY: return "GETGEOMETRY";
211 case TD_EJECT: return "EJECT";
212 case TD_LASTCOMM: return "LASTCOMM/READ64";
213 case TD_WRITE64: return "WRITE64";
214 case HD_SCSICMD: return "HD_SCSICMD";
215 case NSCMD_DEVICEQUERY: return "NSCMD_DEVICEQUERY";
216 case NSCMD_TD_READ64: return "NSCMD_TD_READ64";
217 case NSCMD_TD_WRITE64: return "NSCMD_TD_WRITE64";
218 case NSCMD_TD_FORMAT64: return "NSCMD_TD_FORMAT64";
221 return "!!!Unhandled IO command";
225 char *scsi_cmd_name(int index) {
227 case 0x00: return "TEST UNIT READY";
228 case 0x12: return "INQUIRY";
229 case 0x08: return "READ (6)";
230 case 0x0A: return "WRITE (6)";
231 case 0x28: return "READ (10)";
232 case 0x2A: return "WRITE (10)";
233 case 0x25: return "READ CAPACITY";
234 case 0x1A: return "MODE SENSE";
235 case 0x37: return "READ DEFECT DATA";
237 return "!!!Unhandled SCSI command";
241 void print_piscsi_debug_message(int index) {
244 printf("[PISCSI] Initializing devices.\n");
247 printf("[PISCSI] Opening device %d (%d). Flags: %d (%.2X)\n", piscsi_dbg[0], piscsi_dbg[1], piscsi_dbg[2], piscsi_dbg[2]);
250 printf("[PISCSI] Cleaning up.\n");
253 printf("[PISCSI] C/H/S: %d / %d / %d\n", piscsi_dbg[0], piscsi_dbg[1], piscsi_dbg[2]);
256 printf("[PISCSI] BeginIO: io_Command: %d - io_Flags = %d - quick: %d\n", piscsi_dbg[0], piscsi_dbg[1], piscsi_dbg[2]);
259 printf("[PISCSI] AbortIO!\n");
262 printf("[PISCSI] SCSI Command %d (%s)\n", piscsi_dbg[1], scsi_cmd_name(piscsi_dbg[1]));
263 printf("Len: %d - %.2X %.2X %.2X - Command Length: %d\n", piscsi_dbg[0], piscsi_dbg[1], piscsi_dbg[2], piscsi_dbg[3], piscsi_dbg[4]);
265 case DBG_SCSI_UNKNOWN_MODESENSE:
266 printf("SCSI: Unknown modesense %.4X\n", piscsi_dbg[0]);
268 case DBG_SCSI_UNKNOWN_COMMAND:
269 printf("SCSI: Unknown command %.4X\n", piscsi_dbg[0]);
272 printf("SCSI: An error occured: %.4X\n", piscsi_dbg[0]);
275 printf("[PISCSI] IO Command %d (%s)\n", piscsi_dbg[0], io_cmd_name(piscsi_dbg[0]));
277 case DBG_IOCMD_UNHANDLED:
278 printf("[PISCSI] WARN: IO command %.4X (%s) is unhandled by driver.\n", piscsi_dbg[0], io_cmd_name(piscsi_dbg[0]));
282 void handle_piscsi_write(uint32_t addr, uint32_t val, uint8_t type) {
285 struct piscsi_dev *d = &devs[piscsi_cur_drive];
287 uint16_t cmd = (addr & 0xFFFF);
290 case PISCSI_CMD_READ64:
291 case PISCSI_CMD_READ:
294 printf ("[PISCSI] BUG: Attempted read from unmapped drive %d.\n", piscsi_cur_drive);
298 if (cmd == PISCSI_CMD_READ) {
299 printf("[PISCSI] %d byte READ from block %d to address %.8X\n", piscsi_u32[1], piscsi_u32[0], piscsi_u32[2]);
300 d->lba = piscsi_u32[0];
301 lseek(d->fd, (piscsi_u32[0] * 512), SEEK_SET);
304 uint64_t src = piscsi_u32[3];
305 src = (src << 32) | piscsi_u32[0];
306 printf("[PISCSI] %d byte READ64 from block %lld to address %.8X\n", piscsi_u32[1], (src / 512), piscsi_u32[2]);
307 d->lba = (src / 512);
308 lseek64(d->fd, src, SEEK_SET);
311 r = get_mapped_item_by_address(cfg, piscsi_u32[2]);
312 if (r != -1 && cfg->map_type[r] == MAPTYPE_RAM) {
313 printf("[PISCSI] \"DMA\" Read goes to mapped range %d.\n", r);
314 read(d->fd, cfg->map_data[r] + piscsi_u32[2] - cfg->map_offset[r], piscsi_u32[1]);
317 printf("[PISCSI] No mapped range found for read.\n");
319 for (uint32_t i = 0; i < piscsi_u32[1]; i++) {
321 write8(piscsi_u32[2] + i, (uint32_t)c);
325 case PISCSI_CMD_WRITE64:
326 case PISCSI_CMD_WRITE:
329 printf ("[PISCSI] BUG: Attempted write to unmapped drive %d.\n", piscsi_cur_drive);
333 if (cmd == PISCSI_CMD_WRITE) {
334 printf("[PISCSI] %d byte WRITE to block %d from address %.8X\n", piscsi_u32[1], piscsi_u32[0], piscsi_u32[2]);
335 d->lba = piscsi_u32[0];
336 lseek(d->fd, (piscsi_u32[0] * 512), SEEK_SET);
339 uint64_t src = piscsi_u32[3];
340 src = (src << 32) | piscsi_u32[0];
341 printf("[PISCSI] %d byte WRITE64 to block %lld from address %.8X\n", piscsi_u32[1], (src / 512), piscsi_u32[2]);
342 d->lba = (src / 512);
343 lseek64(d->fd, src, SEEK_SET);
346 r = get_mapped_item_by_address(cfg, piscsi_u32[2]);
348 printf("[PISCSI] \"DMA\" Write comes from mapped range %d.\n", r);
349 write(d->fd, cfg->map_data[r] + piscsi_u32[2] - cfg->map_offset[r], piscsi_u32[1]);
352 printf("[PISCSI] No mapped range found for write.\n");
354 for (uint32_t i = 0; i < piscsi_u32[1]; i++) {
355 c = read8(piscsi_u32[2] + i);
360 case PISCSI_CMD_ADDR1: case PISCSI_CMD_ADDR2: case PISCSI_CMD_ADDR3: case PISCSI_CMD_ADDR4: {
361 int i = ((addr & 0xFFFF) - PISCSI_CMD_ADDR1) / 4;
365 case PISCSI_CMD_DRVNUM:
367 if (val < 10) // Kludge for GiggleDisk
368 piscsi_cur_drive = val;
369 else if (val >= 10 && val % 10 != 0)
370 piscsi_cur_drive = 255;
372 piscsi_cur_drive = val / 10;
375 piscsi_cur_drive = val;
376 printf("[PISCSI] (%s) Drive number set to %d (%d)\n", op_type_names[type], piscsi_cur_drive, val);
378 case PISCSI_CMD_DEBUGME:
379 printf("[PISCSI] DebugMe triggered (%d).\n", val);
380 stop_cpu_emulation(1);
382 case PISCSI_CMD_DRIVER: {
383 printf("[PISCSI] Driver copy/patch called, destination address %.8X.\n", val);
384 int r = get_mapped_item_by_address(cfg, val);
386 uint32_t addr = val - cfg->map_offset[r];
387 uint8_t *dst_data = cfg->map_data[r];
388 memcpy(dst_data + addr, piscsi_rom_ptr + 0x400, 0x3C00);
390 piscsi_hinfo.base_offset = val;
392 reloc_hunks(piscsi_hreloc, dst_data + addr, &piscsi_hinfo);
393 stop_cpu_emulation(1);
396 for (int i = 0; i < 0x3C00; i++) {
397 uint8_t src = piscsi_rom_ptr[0x400 + i];
398 write8(addr + i, src);
403 case PISCSI_DBG_VAL1: case PISCSI_DBG_VAL2: case PISCSI_DBG_VAL3: case PISCSI_DBG_VAL4:
404 case PISCSI_DBG_VAL5: case PISCSI_DBG_VAL6: case PISCSI_DBG_VAL7: case PISCSI_DBG_VAL8: {
405 int i = ((addr & 0xFFFF) - PISCSI_DBG_VAL1) / 4;
410 print_piscsi_debug_message(val);
413 printf("[PISCSI] WARN: Unhandled %s register write to %.8X: %d\n", op_type_names[type], addr, val);
420 uint32_t handle_piscsi_read(uint32_t addr, uint8_t type) {
423 if ((addr & 0xFFFF) >= PISCSI_CMD_ROM) {
424 uint32_t romoffs = (addr & 0xFFFF) - PISCSI_CMD_ROM;
425 if (romoffs < (piscsi_rom_size + PIB)) {
426 //printf("[PISCSI] %s read from Boot ROM @$%.4X (%.8X): ", op_type_names[type], romoffs, addr);
430 v = piscsi_rom_ptr[romoffs - PIB];
431 //printf("%.2X\n", v);
434 v = be16toh(*((uint16_t *)&piscsi_rom_ptr[romoffs - PIB]));
435 //printf("%.4X\n", v);
437 case OP_TYPE_LONGWORD:
438 v = be32toh(*((uint32_t *)&piscsi_rom_ptr[romoffs - PIB]));
439 //printf("%.8X\n", v);
447 switch (addr & 0xFFFF) {
448 case PISCSI_CMD_DRVTYPE:
449 if (devs[piscsi_cur_drive].fd == -1) {
450 printf("[PISCSI] %s Read from DRVTYPE %d, drive not attached.\n", op_type_names[type], piscsi_cur_drive);
453 printf("[PISCSI] %s Read from DRVTYPE %d, drive attached.\n", op_type_names[type], piscsi_cur_drive);
456 case PISCSI_CMD_DRVNUM:
457 return piscsi_cur_drive;
459 case PISCSI_CMD_CYLS:
460 printf("[PISCSI] %s Read from CYLS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].c);
461 return devs[piscsi_cur_drive].c;
463 case PISCSI_CMD_HEADS:
464 printf("[PISCSI] %s Read from HEADS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].h);
465 return devs[piscsi_cur_drive].h;
467 case PISCSI_CMD_SECS:
468 printf("[PISCSI] %s Read from SECS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].s);
469 return devs[piscsi_cur_drive].s;
471 case PISCSI_CMD_BLOCKS: {
472 uint32_t blox = devs[piscsi_cur_drive].fs / 512;
473 printf("[PISCSI] %s Read from BLOCKS %d: %d\n", op_type_names[type], piscsi_cur_drive, (uint32_t)(devs[piscsi_cur_drive].fs / 512));
474 printf("fs: %lld (%d)\n", devs[piscsi_cur_drive].fs, blox);
479 printf("[PISCSI] Unhandled %s register read from %.8X\n", op_type_names[type], addr);