1 // SPDX-License-Identifier: MIT
11 #include "config_file/config_file.h"
12 #include "gpio/ps_protocol.h"
13 #include "piscsi-enums.h"
15 #include "platforms/amiga/hunk-reloc.h"
17 #define BE(val) be32toh(val)
18 #define BE16(val) be16toh(val)
20 // Uncomment the line below to enable debug output
21 //#define PISCSI_DEBUG
25 //#define DEBUG_TRIVIAL printf
26 #define DEBUG_TRIVIAL(...)
28 //extern void stop_cpu_emulation(uint8_t disasm_cur);
29 #define stop_cpu_emulation(...)
31 static const char *op_type_names[4] = {
39 #define DEBUG_TRIVIAL(...)
40 #define stop_cpu_emulation(...)
47 extern struct emulator_config *cfg;
49 struct piscsi_dev devs[8];
50 struct piscsi_fs filesystems[NUM_FILESYSTEMS];
52 uint8_t piscsi_num_fs = 0;
54 uint8_t piscsi_cur_drive = 0;
55 uint32_t piscsi_u32[4];
56 uint32_t piscsi_dbg[8];
57 uint32_t piscsi_rom_size = 0;
58 uint8_t *piscsi_rom_ptr;
60 uint32_t rom_partitions[128];
61 uint32_t rom_partition_prio[128];
62 uint32_t rom_partition_dostype[128];
63 uint32_t rom_cur_partition = 0, rom_cur_fs = 0;
65 extern unsigned char ac_piscsi_rom[];
67 //static const char *partition_marker = "PART";
69 struct hunk_info piscsi_hinfo;
70 struct hunk_reloc piscsi_hreloc[256];
73 for (int i = 0; i < 8; i++) {
76 devs[i].c = devs[i].h = devs[i].s = 0;
79 if (piscsi_rom_ptr == NULL) {
80 FILE *in = fopen("./platforms/amiga/piscsi/piscsi.rom", "rb");
82 printf("[PISCSI] Could not open PISCSI Boot ROM file for reading!\n");
83 // Zero out the boot ROM offset from the autoconfig ROM.
84 ac_piscsi_rom[20] = 0;
85 ac_piscsi_rom[21] = 0;
86 ac_piscsi_rom[22] = 0;
87 ac_piscsi_rom[23] = 0;
90 fseek(in, 0, SEEK_END);
91 piscsi_rom_size = ftell(in);
92 fseek(in, 0, SEEK_SET);
93 piscsi_rom_ptr = malloc(piscsi_rom_size);
94 fread(piscsi_rom_ptr, piscsi_rom_size, 1, in);
96 fseek(in, PISCSI_DRIVER_OFFSET, SEEK_SET);
97 process_hunks(in, &piscsi_hinfo, piscsi_hreloc, PISCSI_DRIVER_OFFSET);
101 printf("[PISCSI] Loaded Boot ROM.\n");
103 printf("[PISCSI] Boot ROM already loaded.\n");
108 void piscsi_shutdown() {
109 printf("[PISCSI] Shutting down PiSCSI.\n");
110 for (int i = 0; i < 8; i++) {
111 if (devs[i].fd != -1) {
114 devs[i].block_size = 0;
118 for (int i = 0; i < NUM_FILESYSTEMS; i++) {
119 if (filesystems[i].binary_data) {
120 free(filesystems[i].binary_data);
121 filesystems[i].binary_data = NULL;
123 if (filesystems[i].fhb) {
124 free(filesystems[i].fhb);
125 filesystems[i].fhb = NULL;
127 filesystems[i].h_info.current_hunk = 0;
128 filesystems[i].h_info.reloc_hunks = 0;
129 filesystems[i].FS_ID = 0;
130 filesystems[i].handler = 0;
134 void piscsi_find_partitions(struct piscsi_dev *d) {
136 int cur_partition = 0;
139 for (int i = 0; i < 16; i++) {
146 if (!d->rdb || d->rdb->rdb_PartitionList == 0) {
147 DEBUG("[PISCSI] No partitions on disk.\n");
151 char *block = malloc(d->block_size);
153 lseek(fd, BE(d->rdb->rdb_PartitionList) * d->block_size, SEEK_SET);
155 read(fd, block, d->block_size);
157 uint32_t first = be32toh(*((uint32_t *)&block[0]));
158 if (first != PART_IDENTIFIER) {
159 DEBUG("Entry at block %d is not a valid partition. Aborting.\n", BE(d->rdb->rdb_PartitionList));
163 struct PartitionBlock *pb = (struct PartitionBlock *)block;
164 tmp = pb->pb_DriveName[0];
165 pb->pb_DriveName[tmp + 1] = 0x00;
166 DEBUG("[PISCSI] Partition %d: %s\n", cur_partition, pb->pb_DriveName + 1);
167 DEBUG("Checksum: %.8X HostID: %d\n", BE(pb->pb_ChkSum), BE(pb->pb_HostID));
168 DEBUG("Flags: %d (%.8X) Devflags: %d (%.8X)\n", BE(pb->pb_Flags), BE(pb->pb_Flags), BE(pb->pb_DevFlags), BE(pb->pb_DevFlags));
169 d->pb[cur_partition] = pb;
171 if (d->pb[cur_partition]->pb_Next != 0xFFFFFFFF) {
172 uint64_t next = be32toh(pb->pb_Next);
173 block = malloc(d->block_size);
174 lseek64(fd, next * d->block_size, SEEK_SET);
176 DEBUG("[PISCSI] Next partition at block %d.\n", be32toh(pb->pb_Next));
179 DEBUG("[PISCSI] No more partitions on disk.\n");
180 d->num_partitions = cur_partition + 1;
181 d->fshd_offs = lseek64(fd, 0, SEEK_CUR);
186 int piscsi_parse_rdb(struct piscsi_dev *d) {
189 uint8_t *block = malloc(PISCSI_MAX_BLOCK_SIZE);
191 lseek(fd, 0, SEEK_SET);
192 for (i = 0; i < RDB_BLOCK_LIMIT; i++) {
193 read(fd, block, PISCSI_MAX_BLOCK_SIZE);
194 uint32_t first = be32toh(*((uint32_t *)&block[0]));
195 if (first == RDB_IDENTIFIER)
200 struct RigidDiskBlock *rdb = (struct RigidDiskBlock *)block;
201 DEBUG("[PISCSI] RDB found at block %d.\n", i);
202 d->c = be32toh(rdb->rdb_Cylinders);
203 d->h = be32toh(rdb->rdb_Heads);
204 d->s = be32toh(rdb->rdb_Sectors);
205 d->num_partitions = 0;
206 DEBUG("[PISCSI] RDB - first partition at block %d.\n", be32toh(rdb->rdb_PartitionList));
207 d->block_size = be32toh(rdb->rdb_BlockBytes);
208 DEBUG("[PISCSI] Block size: %d. (%d)\n", be32toh(rdb->rdb_BlockBytes), d->block_size);
212 sprintf(d->rdb->rdb_DriveInitName, "pi-scsi.device");
222 void piscsi_refresh_drives() {
225 for (int i = 0; i < NUM_FILESYSTEMS; i++) {
226 if (filesystems[i].binary_data) {
227 free(filesystems[i].binary_data);
228 filesystems[i].binary_data = NULL;
230 if (filesystems[i].fhb) {
231 free(filesystems[i].fhb);
232 filesystems[i].fhb = NULL;
234 filesystems[i].h_info.current_hunk = 0;
235 filesystems[i].h_info.reloc_hunks = 0;
236 filesystems[i].FS_ID = 0;
237 filesystems[i].handler = 0;
242 for (int i = 0; i < NUM_UNITS; i++) {
243 if (devs[i].fd != -1) {
244 piscsi_parse_rdb(&devs[i]);
245 piscsi_find_partitions(&devs[i]);
246 piscsi_find_filesystems(&devs[i]);
251 void piscsi_find_filesystems(struct piscsi_dev *d) {
252 if (!d->num_partitions)
255 uint8_t fs_found = 0;
257 uint8_t *fhb_block = malloc(d->block_size);
259 lseek64(d->fd, d->fshd_offs, SEEK_SET);
261 struct FileSysHeaderBlock *fhb = (struct FileSysHeaderBlock *)fhb_block;
262 read(d->fd, fhb_block, d->block_size);
264 while (BE(fhb->fhb_ID) == FS_IDENTIFIER) {
265 char *dosID = (char *)&fhb->fhb_DosType;
267 uint16_t *fsVer = (uint16_t *)&fhb->fhb_Version;
269 DEBUG("[FSHD] FSHD Block found.\n");
270 DEBUG("[FSHD] HostID: %d Next: %d Size: %d\n", BE(fhb->fhb_HostID), BE(fhb->fhb_Next), BE(fhb->fhb_SummedLongs));
271 DEBUG("[FSHD] Flags: %.8X DOSType: %c%c%c/%d\n", BE(fhb->fhb_Flags), dosID[0], dosID[1], dosID[2], dosID[3]);
272 DEBUG("[FSHD] Version: %d.%d\n", BE16(fsVer[0]), BE16(fsVer[1]));
273 DEBUG("[FSHD] Patchflags: %d Type: %d\n", BE(fhb->fhb_PatchFlags), BE(fhb->fhb_Type));
274 DEBUG("[FSHD] Task: %d Lock: %d\n", BE(fhb->fhb_Task), BE(fhb->fhb_Lock));
275 DEBUG("[FSHD] Handler: %d StackSize: %d\n", BE(fhb->fhb_Handler), BE(fhb->fhb_StackSize));
276 DEBUG("[FSHD] Prio: %d Startup: %d\n", BE(fhb->fhb_Priority), BE(fhb->fhb_Startup));
277 DEBUG("[FSHD] SegListBlocks: %d GlobalVec: %d\n", BE(fhb->fhb_Priority), BE(fhb->fhb_Startup));
278 DEBUG("[FSHD] FileSysName: %s\n", fhb->fhb_FileSysName + 1);
281 for (int i = 0; i < NUM_FILESYSTEMS; i++) {
282 if (filesystems[i].FS_ID == fhb->fhb_DosType) {
283 DEBUG("[FSHD] File system %c%c%c/%d already loaded. Skipping.\n", dosID[0], dosID[1], dosID[2], dosID[3]);
284 if (BE(fhb->fhb_Next) == 0xFFFFFFFF)
287 goto skip_fs_load_lseg;
291 printf ("Loadseg begins.\n");
292 if (load_lseg(d->fd, &filesystems[piscsi_num_fs].binary_data, &filesystems[piscsi_num_fs].h_info, filesystems[piscsi_num_fs].relocs, d->block_size) != -1) {
293 filesystems[piscsi_num_fs].FS_ID = fhb->fhb_DosType;
294 filesystems[piscsi_num_fs].fhb = fhb;
295 printf("[FSHD] Loaded and set up file system %d: %c%c%c/%d\n", piscsi_num_fs + 1, dosID[0], dosID[1], dosID[2], dosID[3]);
301 lseek64(d->fd, BE(fhb->fhb_Next) * d->block_size, SEEK_SET);
302 fhb_block = malloc(d->block_size);
303 fhb = (struct FileSysHeaderBlock *)fhb_block;
304 read(d->fd, fhb_block, d->block_size);
308 DEBUG("[!!!FSHD] No file systems found on hard drive!\n");
316 struct piscsi_dev *piscsi_get_dev(uint8_t index) {
320 void piscsi_map_drive(char *filename, uint8_t index) {
322 printf("[PISCSI] Drive index %d out of range.\nUnable to map file %s to drive.\n", index, filename);
326 int32_t tmp_fd = open(filename, O_RDWR);
328 printf("[PISCSI] Failed to open file %s, could not map drive %d.\n", filename, index);
332 struct piscsi_dev *d = &devs[index];
334 uint64_t file_size = lseek(tmp_fd, 0, SEEK_END);
337 lseek(tmp_fd, 0, SEEK_SET);
338 printf("[PISCSI] Map %d: [%s] - %llu bytes.\n", index, filename, file_size);
340 if (piscsi_parse_rdb(d) == -1) {
341 DEBUG("[PISCSI] No RDB found on disk, making up some CHS values.\n");
344 d->c = (file_size / 512) / (d->s * d->h);
347 printf("[PISCSI] CHS: %d %d %d\n", d->c, d->h, d->s);
349 printf ("Finding partitions.\n");
350 piscsi_find_partitions(d);
351 printf ("Finding file systems.\n");
352 piscsi_find_filesystems(d);
356 void piscsi_unmap_drive(uint8_t index) {
357 if (devs[index].fd != -1) {
358 DEBUG("[PISCSI] Unmapped drive %d.\n", index);
359 close (devs[index].fd);
364 char *io_cmd_name(int index) {
366 case CMD_INVALID: return "INVALID";
367 case CMD_RESET: return "RESET";
368 case CMD_READ: return "READ";
369 case CMD_WRITE: return "WRITE";
370 case CMD_UPDATE: return "UPDATE";
371 case CMD_CLEAR: return "CLEAR";
372 case CMD_STOP: return "STOP";
373 case CMD_START: return "START";
374 case CMD_FLUSH: return "FLUSH";
375 case TD_MOTOR: return "TD_MOTOR";
376 case TD_SEEK: return "SEEK";
377 case TD_FORMAT: return "FORMAT";
378 case TD_REMOVE: return "REMOVE";
379 case TD_CHANGENUM: return "CHANGENUM";
380 case TD_CHANGESTATE: return "CHANGESTATE";
381 case TD_PROTSTATUS: return "PROTSTATUS";
382 case TD_RAWREAD: return "RAWREAD";
383 case TD_RAWWRITE: return "RAWWRITE";
384 case TD_GETDRIVETYPE: return "GETDRIVETYPE";
385 case TD_GETNUMTRACKS: return "GETNUMTRACKS";
386 case TD_ADDCHANGEINT: return "ADDCHANGEINT";
387 case TD_REMCHANGEINT: return "REMCHANGEINT";
388 case TD_GETGEOMETRY: return "GETGEOMETRY";
389 case TD_EJECT: return "EJECT";
390 case TD_LASTCOMM: return "LASTCOMM/READ64";
391 case TD_WRITE64: return "WRITE64";
392 case HD_SCSICMD: return "HD_SCSICMD";
393 case NSCMD_DEVICEQUERY: return "NSCMD_DEVICEQUERY";
394 case NSCMD_TD_READ64: return "NSCMD_TD_READ64";
395 case NSCMD_TD_WRITE64: return "NSCMD_TD_WRITE64";
396 case NSCMD_TD_FORMAT64: return "NSCMD_TD_FORMAT64";
399 return "[!!!PISCSI] Unhandled IO command";
403 #define GETSCSINAME(a) case a: return ""#a"";
404 #define SCSIUNHANDLED(a) return "[!!!PISCSI] Unhandled SCSI command "#a"";
406 char *scsi_cmd_name(int index) {
408 GETSCSINAME(SCSICMD_TEST_UNIT_READY);
409 GETSCSINAME(SCSICMD_INQUIRY);
410 GETSCSINAME(SCSICMD_READ_6);
411 GETSCSINAME(SCSICMD_WRITE_6);
412 GETSCSINAME(SCSICMD_READ_10);
413 GETSCSINAME(SCSICMD_WRITE_10);
414 GETSCSINAME(SCSICMD_READ_CAPACITY_10);
415 GETSCSINAME(SCSICMD_MODE_SENSE_6);
416 GETSCSINAME(SCSICMD_READ_DEFECT_DATA_10);
418 return "[!!!PISCSI] Unhandled SCSI command";
422 void print_piscsi_debug_message(int index) {
427 DEBUG("[PISCSI] Initializing devices.\n");
430 if (piscsi_dbg[0] != 255) {
431 DEBUG("[PISCSI] Opening device %d (%d). Flags: %d (%.2X)\n", piscsi_dbg[0], piscsi_dbg[2], piscsi_dbg[1], piscsi_dbg[1]);
435 DEBUG("[PISCSI] Cleaning up.\n");
438 DEBUG("[PISCSI] C/H/S: %d / %d / %d\n", piscsi_dbg[0], piscsi_dbg[1], piscsi_dbg[2]);
441 DEBUG("[PISCSI] BeginIO: io_Command: %d (%s) - io_Flags = %d - quick: %d\n", piscsi_dbg[0], io_cmd_name(piscsi_dbg[0]), piscsi_dbg[1], piscsi_dbg[2]);
444 DEBUG("[PISCSI] AbortIO!\n");
447 DEBUG("[PISCSI] SCSI Command %d (%s)\n", piscsi_dbg[1], scsi_cmd_name(piscsi_dbg[1]));
448 DEBUG("Len: %d - %.2X %.2X %.2X - Command Length: %d\n", piscsi_dbg[0], piscsi_dbg[1], piscsi_dbg[2], piscsi_dbg[3], piscsi_dbg[4]);
450 case DBG_SCSI_UNKNOWN_MODESENSE:
451 DEBUG("[!!!PISCSI] SCSI: Unknown modesense %.4X\n", piscsi_dbg[0]);
453 case DBG_SCSI_UNKNOWN_COMMAND:
454 DEBUG("[!!!PISCSI] SCSI: Unknown command %.4X\n", piscsi_dbg[0]);
457 DEBUG("[!!!PISCSI] SCSI: An error occured: %.4X\n", piscsi_dbg[0]);
460 DEBUG_TRIVIAL("[PISCSI] IO Command %d (%s)\n", piscsi_dbg[0], io_cmd_name(piscsi_dbg[0]));
462 case DBG_IOCMD_UNHANDLED:
463 DEBUG("[!!!PISCSI] WARN: IO command %.4X (%s) is unhandled by driver.\n", piscsi_dbg[0], io_cmd_name(piscsi_dbg[0]));
465 case DBG_SCSI_FORMATDEVICE:
466 DEBUG("[PISCSI] Get SCSI FormatDevice MODE SENSE.\n");
469 DEBUG("[PISCSI] Get SCSI RDG MODE SENSE.\n");
471 case DBG_SCSICMD_RW10:
473 r = get_mapped_item_by_address(cfg, piscsi_dbg[0]);
474 struct SCSICmd_RW10 *rwdat = NULL;
477 uint32_t addr = piscsi_dbg[0] - cfg->map_offset[r];
478 rwdat = (struct SCSICmd_RW10 *)(&cfg->map_data[r][addr]);
481 DEBUG_TRIVIAL("[RW10] scsiData: %.8X\n", piscsi_dbg[0]);
482 for (int i = 0; i < 10; i++) {
483 data[i] = read8(piscsi_dbg[0] + i);
488 DEBUG_TRIVIAL("[RW10] CMD: %.2X\n", rwdat->opcode);
489 DEBUG_TRIVIAL("[RW10] RDP: %.2X\n", rwdat->rdprotect_flags);
490 DEBUG_TRIVIAL("[RW10] Block: %d (%d)\n", rwdat->block, BE(rwdat->block));
491 DEBUG_TRIVIAL("[RW10] Res_Group: %.2X\n", rwdat->res_groupnum);
492 DEBUG_TRIVIAL("[RW10] Len: %d (%d)\n", rwdat->len, BE16(rwdat->len));
496 case DBG_SCSI_DEBUG_MODESENSE_6:
497 DEBUG_TRIVIAL("[PISCSI] SCSI ModeSense debug. Data: %.8X\n", piscsi_dbg[0]);
498 r = get_mapped_item_by_address(cfg, piscsi_dbg[0]);
501 uint32_t addr = piscsi_dbg[0] - cfg->map_offset[r];
502 struct SCSICmd_ModeSense6 *sense = (struct SCSICmd_ModeSense6 *)(&cfg->map_data[r][addr]);
503 DEBUG_TRIVIAL("[SenseData] CMD: %.2X\n", sense->opcode);
504 DEBUG_TRIVIAL("[SenseData] DBD: %d\n", sense->reserved_dbd & 0x04);
505 DEBUG_TRIVIAL("[SenseData] PC: %d\n", (sense->pc_pagecode & 0xC0 >> 6));
506 DEBUG_TRIVIAL("[SenseData] PageCodes: %.2X %.2X\n", (sense->pc_pagecode & 0x3F), sense->subpage_code);
507 DEBUG_TRIVIAL("[SenseData] AllocLen: %d\n", sense->alloc_len);
508 DEBUG_TRIVIAL("[SenseData] Control: %.2X (%d)\n", sense->control, sense->control);
512 DEBUG("[!!!PISCSI] ModeSense data not immediately available.\n");
516 DEBUG("[!!!PISCSI] No debug message available for index %d.\n", index);
521 #define DEBUGME_SIMPLE(i, s) case i: DEBUG(s); break;
523 void piscsi_debugme(uint32_t index) {
525 DEBUGME_SIMPLE(1, "[PISCSI-DEBUGME] Arrived at DiagEntry.\n");
526 DEBUGME_SIMPLE(3, "[PISCSI-DEBUGME] Init: Interrupt disable.\n");
527 DEBUGME_SIMPLE(4, "[PISCSI-DEBUGME] Init: Copy/reloc driver.\n");
528 DEBUGME_SIMPLE(5, "[PISCSI-DEBUGME] Init: InitResident.\n");
529 DEBUGME_SIMPLE(7, "[PISCSI-DEBUGME] Init: Begin partition loop.\n");
530 DEBUGME_SIMPLE(8, "[PISCSI-DEBUGME] Init: Partition loop done. Cleaning up and returning to Exec.\n");
531 DEBUGME_SIMPLE(9, "[PISCSI-DEBUGME] Init: Load file systems.\n");
532 DEBUGME_SIMPLE(10, "[PISCSI-DEBUGME] Init: AllocMem for resident.\n");
533 DEBUGME_SIMPLE(11, "[PISCSI-DEBUGME] Init: Checking if resident is loaded.\n");
534 DEBUGME_SIMPLE(22, "[PISCSI-DEBUGME] Arrived at BootEntry.\n");
535 DEBUGME_SIMPLE(30, "[PISCSI-DEBUGME] LoadFileSystems: Opening FileSystem.resource.\n");
536 DEBUGME_SIMPLE(33, "[PISCSI-DEBUGME] FileSystem.resource not available, creating.\n");
538 DEBUG("[PISCSI-DEBUGME] OpenResource result: %d\n", piscsi_u32[0]);
544 DEBUG("[!!!PISCSI-DEBUGME] No debugme message for index %d!\n", index);
549 stop_cpu_emulation(1);
553 void handle_piscsi_write(uint32_t addr, uint32_t val, uint8_t type) {
559 struct piscsi_dev *d = &devs[piscsi_cur_drive];
561 uint16_t cmd = (addr & 0xFFFF);
564 case PISCSI_CMD_READ64:
565 case PISCSI_CMD_READ:
566 case PISCSI_CMD_READBYTES:
569 DEBUG("[!!!PISCSI] BUG: Attempted read from unmapped drive %d.\n", val);
573 if (cmd == PISCSI_CMD_READBYTES) {
574 DEBUG("[PISCSI-%d] %d byte READBYTES from block %d to address %.8X\n", val, piscsi_u32[1], piscsi_u32[0] / d->block_size, piscsi_u32[2]);
575 uint32_t src = piscsi_u32[0];
576 d->lba = (src / d->block_size);
577 lseek(d->fd, src, SEEK_SET);
579 else if (cmd == PISCSI_CMD_READ) {
580 DEBUG("[PISCSI-%d] %d byte READ from block %d to address %.8X\n", val, piscsi_u32[1], piscsi_u32[0], piscsi_u32[2]);
581 d->lba = piscsi_u32[0];
582 lseek(d->fd, (piscsi_u32[0] * d->block_size), SEEK_SET);
585 uint64_t src = piscsi_u32[3];
586 src = (src << 32) | piscsi_u32[0];
587 DEBUG("[PISCSI-%d] %d byte READ64 from block %lld to address %.8X\n", val, piscsi_u32[1], (src / d->block_size), piscsi_u32[2]);
588 d->lba = (src / d->block_size);
589 lseek64(d->fd, src, SEEK_SET);
592 r = get_mapped_item_by_address(cfg, piscsi_u32[2]);
593 if (r != -1 && cfg->map_type[r] == MAPTYPE_RAM) {
594 DEBUG_TRIVIAL("[PISCSI-%d] \"DMA\" Read goes to mapped range %d.\n", val, r);
595 read(d->fd, cfg->map_data[r] + piscsi_u32[2] - cfg->map_offset[r], piscsi_u32[1]);
598 DEBUG_TRIVIAL("[PISCSI-%d] No mapped range found for read.\n", val);
600 for (uint32_t i = 0; i < piscsi_u32[1]; i++) {
602 m68k_write_memory_8(piscsi_u32[2] + i, (uint32_t)c);
606 case PISCSI_CMD_WRITE64:
607 case PISCSI_CMD_WRITE:
608 case PISCSI_CMD_WRITEBYTES:
611 DEBUG ("[PISCSI] BUG: Attempted write to unmapped drive %d.\n", val);
615 if (cmd == PISCSI_CMD_WRITEBYTES) {
616 DEBUG("[PISCSI-%d] %d byte WRITEBYTES to block %d from address %.8X\n", val, piscsi_u32[1], piscsi_u32[0] / d->block_size, piscsi_u32[2]);
617 uint32_t src = piscsi_u32[0];
618 d->lba = (src / d->block_size);
619 lseek(d->fd, src, SEEK_SET);
621 else if (cmd == PISCSI_CMD_WRITE) {
622 DEBUG("[PISCSI-%d] %d byte WRITE to block %d from address %.8X\n", val, piscsi_u32[1], piscsi_u32[0], piscsi_u32[2]);
623 d->lba = piscsi_u32[0];
624 lseek(d->fd, (piscsi_u32[0] * d->block_size), SEEK_SET);
627 uint64_t src = piscsi_u32[3];
628 src = (src << 32) | piscsi_u32[0];
629 DEBUG("[PISCSI-%d] %d byte WRITE64 to block %lld from address %.8X\n", val, piscsi_u32[1], (src / d->block_size), piscsi_u32[2]);
630 d->lba = (src / d->block_size);
631 lseek64(d->fd, src, SEEK_SET);
634 r = get_mapped_item_by_address(cfg, piscsi_u32[2]);
636 DEBUG_TRIVIAL("[PISCSI-%d] \"DMA\" Write comes from mapped range %d.\n", val, r);
637 write(d->fd, cfg->map_data[r] + piscsi_u32[2] - cfg->map_offset[r], piscsi_u32[1]);
640 DEBUG_TRIVIAL("[PISCSI-%d] No mapped range found for write.\n", val);
642 for (uint32_t i = 0; i < piscsi_u32[1]; i++) {
643 c = m68k_read_memory_8(piscsi_u32[2] + i);
648 case PISCSI_CMD_ADDR1: case PISCSI_CMD_ADDR2: case PISCSI_CMD_ADDR3: case PISCSI_CMD_ADDR4: {
649 int i = ((addr & 0xFFFF) - PISCSI_CMD_ADDR1) / 4;
653 case PISCSI_CMD_DRVNUM:
654 //printf("%d ", val);
656 piscsi_cur_drive = 255;
658 piscsi_cur_drive = val / 10;
659 if (piscsi_cur_drive > NUM_UNITS)
660 piscsi_cur_drive = 255;
662 if (piscsi_cur_drive != 255) {
663 DEBUG("[PISCSI] (%s) Drive number set to %d (%d)\n", op_type_names[type], piscsi_cur_drive, val);
666 case PISCSI_CMD_DEBUGME:
669 case PISCSI_CMD_DRIVER: {
670 DEBUG("[PISCSI] Driver copy/patch called, destination address %.8X.\n", val);
671 int r = get_mapped_item_by_address(cfg, val);
673 uint32_t addr = val - cfg->map_offset[r];
674 uint8_t *dst_data = cfg->map_data[r];
675 uint8_t cur_partition = 0;
676 memcpy(dst_data + addr, piscsi_rom_ptr + PISCSI_DRIVER_OFFSET, 0x4000 - PISCSI_DRIVER_OFFSET);
678 piscsi_hinfo.base_offset = val;
680 reloc_hunks(piscsi_hreloc, dst_data + addr, &piscsi_hinfo);
682 #define PUTNODELONG(val) *(uint32_t *)&dst_data[p_offs] = htobe32(val); p_offs += 4;
683 #define PUTNODELONGBE(val) *(uint32_t *)&dst_data[p_offs] = val; p_offs += 4;
685 for (int i = 0; i < 128; i++) {
686 rom_partitions[i] = 0;
687 rom_partition_prio[i] = 0;
688 rom_partition_dostype[i] = 0;
690 rom_cur_partition = 0;
692 uint32_t data_addr = addr + 0x3F00;
693 sprintf((char *)dst_data + data_addr, "pi-scsi.device");
694 uint32_t addr2 = addr + 0x4000;
695 for (int i = 0; i < NUM_UNITS; i++) {
696 if (devs[i].fd != -1)
697 piscsi_find_partitions(&devs[i]);
701 if (devs[i].num_partitions) {
702 uint32_t p_offs = addr2;
703 DEBUG("[PISCSI] Adding %d partitions for unit %d\n", devs[i].num_partitions, i);
704 for (uint32_t j = 0; j < devs[i].num_partitions; j++) {
705 DEBUG("Partition %d: %s\n", j, devs[i].pb[j]->pb_DriveName + 1);
706 sprintf((char *)dst_data + p_offs, "%s", devs[i].pb[j]->pb_DriveName + 1);
708 PUTNODELONG(addr2 + cfg->map_offset[r]);
709 PUTNODELONG(data_addr + cfg->map_offset[r]);
710 PUTNODELONG((i * 10));
712 uint32_t nodesize = (be32toh(devs[i].pb[j]->pb_Environment[0]) + 1) * 4;
713 memcpy(dst_data + p_offs, devs[i].pb[j]->pb_Environment, nodesize);
715 struct pihd_dosnode_data *dat = (struct pihd_dosnode_data *)(&dst_data[addr2+0x20]);
717 if (BE(devs[i].pb[j]->pb_Flags) & 0x01) {
718 DEBUG("Partition is bootable.\n");
719 rom_partition_prio[cur_partition] = 0;
723 DEBUG("Partition is not bootable.\n");
724 rom_partition_prio[cur_partition] = -128;
725 dat->priority = htobe32(-128);
728 DEBUG("DOSNode Data:\n");
729 DEBUG("Name: %s Device: %s\n", dst_data + addr2, dst_data + data_addr);
730 DEBUG("Unit: %d Flags: %d Pad1: %d\n", BE(dat->unit), BE(dat->flags), BE(dat->pad1));
731 DEBUG("Node len: %d Block len: %d\n", BE(dat->node_len) * 4, BE(dat->block_len) * 4);
732 DEBUG("H: %d SPB: %d BPS: %d\n", BE(dat->surf), BE(dat->secs_per_block), BE(dat->blocks_per_track));
733 DEBUG("Reserved: %d Prealloc: %d\n", BE(dat->reserved_blocks), BE(dat->pad2));
734 DEBUG("Interleaved: %d Buffers: %d Memtype: %d\n", BE(dat->interleave), BE(dat->buffers), BE(dat->mem_type));
735 DEBUG("Lowcyl: %d Highcyl: %d Prio: %d\n", BE(dat->lowcyl), BE(dat->highcyl), BE(dat->priority));
736 DEBUG("Maxtransfer: %.8X Mask: %.8X\n", BE(dat->maxtransfer), BE(dat->transfer_mask));
737 DEBUG("DOSType: %.8X\n", BE(dat->dostype));
739 rom_partitions[cur_partition] = addr2 + 0x20 + cfg->map_offset[r];
740 rom_partition_dostype[cur_partition] = dat->dostype;
752 case PISCSI_CMD_NEXTPART:
753 DEBUG("[PISCSI] Switch partition %d -> %d\n", rom_cur_partition, rom_cur_partition + 1);
756 case PISCSI_CMD_NEXTFS:
757 DEBUG("[PISCSI] Switch file file system %d -> %d\n", rom_cur_fs, rom_cur_fs + 1);
760 case PISCSI_CMD_COPYFS:
761 DEBUG("[PISCSI] Copy file system %d to %.8X and reloc.\n", rom_cur_fs, piscsi_u32[2]);
762 r = get_mapped_item_by_address(cfg, piscsi_u32[2]);
764 uint32_t addr = piscsi_u32[2] - cfg->map_offset[r];
765 memset(cfg->map_data[r] + addr, 0x00, filesystems[rom_cur_fs].h_info.alloc_size);
766 memcpy(cfg->map_data[r] + addr, filesystems[rom_cur_fs].binary_data, filesystems[rom_cur_fs].h_info.byte_size);
767 filesystems[rom_cur_fs].h_info.base_offset = piscsi_u32[2];
768 reloc_hunks(filesystems[rom_cur_fs].relocs, cfg->map_data[r] + addr, &filesystems[rom_cur_fs].h_info);
769 filesystems[rom_cur_fs].handler = piscsi_u32[2];
772 case PISCSI_CMD_SETFSH: {
774 DEBUG("[PISCSI] Set handler for partition %d (DeviceNode: %.8X)\n", rom_cur_partition, val);
775 r = get_mapped_item_by_address(cfg, val);
777 uint32_t addr = val - cfg->map_offset[r];
778 struct DeviceNode *node = (struct DeviceNode *)(cfg->map_data[r] + addr);
780 char *dosID = (char *)&rom_partition_dostype[rom_cur_partition];
782 DEBUG("[PISCSI] Partition DOSType is %c%c%c/%d\n", dosID[0], dosID[1], dosID[2], dosID[3]);
783 for (i = 0; i < piscsi_num_fs; i++) {
784 if (rom_partition_dostype[rom_cur_partition] == filesystems[i].FS_ID) {
785 node->dn_SegList = htobe32((filesystems[i].handler >> 2));
786 node->dn_GlobalVec = 0xFFFFFFFF;
790 DEBUG("[!!!PISCSI] Found no handler for file system!\n");
792 DEBUG("[FS-HANDLER] Next: %d Type: %.8X\n", BE(node->dn_Next), BE(node->dn_Type));
793 DEBUG("[FS-HANDLER] Task: %d Lock: %d\n", BE(node->dn_Task), BE(node->dn_Lock));
794 DEBUG("[FS-HANDLER] Handler: %d Stacksize: %d\n", BE((uint32_t)node->dn_Handler), BE(node->dn_StackSize));
795 DEBUG("[FS-HANDLER] Priority: %d Startup: %d\n", BE((uint32_t)node->dn_Priority), BE(node->dn_Startup));
796 DEBUG("[FS-HANDLER] SegList: %.8X GlobalVec: %d\n", BE((uint32_t)node->dn_SegList), BE(node->dn_GlobalVec));
797 DEBUG("[PISCSI] Handler for partition %.8X set to %.8X (%.8X).\n", BE((uint32_t)node->dn_Name), filesystems[i].FS_ID, filesystems[i].handler);
801 case PISCSI_DBG_VAL1: case PISCSI_DBG_VAL2: case PISCSI_DBG_VAL3: case PISCSI_DBG_VAL4:
802 case PISCSI_DBG_VAL5: case PISCSI_DBG_VAL6: case PISCSI_DBG_VAL7: case PISCSI_DBG_VAL8: {
803 int i = ((addr & 0xFFFF) - PISCSI_DBG_VAL1) / 4;
808 print_piscsi_debug_message(val);
811 DEBUG("[!!!PISCSI] WARN: Unhandled %s register write to %.8X: %d\n", op_type_names[type], addr, val);
818 uint32_t handle_piscsi_read(uint32_t addr, uint8_t type) {
821 if ((addr & 0xFFFF) >= PISCSI_CMD_ROM) {
822 uint32_t romoffs = (addr & 0xFFFF) - PISCSI_CMD_ROM;
823 if (romoffs < (piscsi_rom_size + PIB)) {
824 //DEBUG("[PISCSI] %s read from Boot ROM @$%.4X (%.8X): ", op_type_names[type], romoffs, addr);
828 v = piscsi_rom_ptr[romoffs - PIB];
829 //DEBUG("%.2X\n", v);
832 v = be16toh(*((uint16_t *)&piscsi_rom_ptr[romoffs - PIB]));
833 //DEBUG("%.4X\n", v);
835 case OP_TYPE_LONGWORD:
836 v = be32toh(*((uint32_t *)&piscsi_rom_ptr[romoffs - PIB]));
837 //DEBUG("%.8X\n", v);
845 switch (addr & 0xFFFF) {
846 case PISCSI_CMD_ADDR1: case PISCSI_CMD_ADDR2: case PISCSI_CMD_ADDR3: case PISCSI_CMD_ADDR4: {
847 int i = ((addr & 0xFFFF) - PISCSI_CMD_ADDR1) / 4;
848 return piscsi_u32[i];
851 case PISCSI_CMD_DRVTYPE:
852 if (devs[piscsi_cur_drive].fd == -1) {
853 DEBUG("[PISCSI] %s Read from DRVTYPE %d, drive not attached.\n", op_type_names[type], piscsi_cur_drive);
856 DEBUG("[PISCSI] %s Read from DRVTYPE %d, drive attached.\n", op_type_names[type], piscsi_cur_drive);
859 case PISCSI_CMD_DRVNUM:
860 return piscsi_cur_drive;
862 case PISCSI_CMD_CYLS:
863 DEBUG("[PISCSI] %s Read from CYLS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].c);
864 return devs[piscsi_cur_drive].c;
866 case PISCSI_CMD_HEADS:
867 DEBUG("[PISCSI] %s Read from HEADS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].h);
868 return devs[piscsi_cur_drive].h;
870 case PISCSI_CMD_SECS:
871 DEBUG("[PISCSI] %s Read from SECS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].s);
872 return devs[piscsi_cur_drive].s;
874 case PISCSI_CMD_BLOCKS: {
875 uint32_t blox = devs[piscsi_cur_drive].fs / devs[piscsi_cur_drive].block_size;
876 DEBUG("[PISCSI] %s Read from BLOCKS %d: %d\n", op_type_names[type], piscsi_cur_drive, (uint32_t)(devs[piscsi_cur_drive].fs / devs[piscsi_cur_drive].block_size));
877 DEBUG("fs: %lld (%d)\n", devs[piscsi_cur_drive].fs, blox);
881 case PISCSI_CMD_GETPART: {
882 DEBUG("[PISCSI] Get ROM partition %d offset: %.8X\n", rom_cur_partition, rom_partitions[rom_cur_partition]);
883 return rom_partitions[rom_cur_partition];
886 case PISCSI_CMD_GETPRIO:
887 DEBUG("[PISCSI] Get partition %d boot priority: %d\n", rom_cur_partition, rom_partition_prio[rom_cur_partition]);
888 return rom_partition_prio[rom_cur_partition];
890 case PISCSI_CMD_CHECKFS:
891 DEBUG("[PISCSI] Get current loaded file system: %.8X\n", filesystems[rom_cur_fs].FS_ID);
892 return filesystems[rom_cur_fs].FS_ID;
893 case PISCSI_CMD_FSSIZE:
894 DEBUG("[PISCSI] Get alloc size of loaded file system: %d\n", filesystems[rom_cur_fs].h_info.alloc_size);
895 return filesystems[rom_cur_fs].h_info.alloc_size;
896 case PISCSI_CMD_BLOCKSIZE:
897 DEBUG("[PISCSI] Get block size of drive %d: %d\n", piscsi_cur_drive, devs[piscsi_cur_drive].block_size);
898 return devs[piscsi_cur_drive].block_size;
900 DEBUG("[!!!PISCSI] WARN: Unhandled %s register read from %.8X\n", op_type_names[type], addr);