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_TRVIAL(...)
28 extern void stop_cpu_emulation(uint8_t disasm_cur);
30 static const char *op_type_names[4] = {
38 #define DEBUG_TRIVIAL(...)
39 #define stop_cpu_emulation(...)
46 extern struct emulator_config *cfg;
48 struct piscsi_dev devs[8];
49 struct piscsi_fs filesystems[NUM_FILESYSTEMS];
51 uint8_t piscsi_num_fs = 0;
53 uint8_t piscsi_cur_drive = 0;
54 uint32_t piscsi_u32[4];
55 uint32_t piscsi_dbg[8];
56 uint32_t piscsi_rom_size = 0;
57 uint8_t *piscsi_rom_ptr;
59 uint32_t rom_partitions[128];
60 uint32_t rom_partition_prio[128];
61 uint32_t rom_partition_dostype[128];
62 uint32_t rom_cur_partition = 0, rom_cur_fs = 0;
64 extern unsigned char ac_piscsi_rom[];
66 //static const char *partition_marker = "PART";
68 struct hunk_info piscsi_hinfo;
69 struct hunk_reloc piscsi_hreloc[256];
72 for (int i = 0; i < 8; i++) {
75 devs[i].c = devs[i].h = devs[i].s = 0;
78 if (piscsi_rom_ptr == NULL) {
79 FILE *in = fopen("./platforms/amiga/piscsi/piscsi.rom", "rb");
81 printf("[PISCSI] Could not open PISCSI Boot ROM file for reading!\n");
82 // Zero out the boot ROM offset from the autoconfig ROM.
83 ac_piscsi_rom[20] = 0;
84 ac_piscsi_rom[21] = 0;
85 ac_piscsi_rom[22] = 0;
86 ac_piscsi_rom[23] = 0;
89 fseek(in, 0, SEEK_END);
90 piscsi_rom_size = ftell(in);
91 fseek(in, 0, SEEK_SET);
92 piscsi_rom_ptr = malloc(piscsi_rom_size);
93 fread(piscsi_rom_ptr, piscsi_rom_size, 1, in);
95 fseek(in, PISCSI_DRIVER_OFFSET, SEEK_SET);
96 process_hunks(in, &piscsi_hinfo, piscsi_hreloc, PISCSI_DRIVER_OFFSET);
100 printf("[PISCSI] Loaded Boot ROM.\n");
102 printf("[PISCSI] Boot ROM already loaded.\n");
107 void piscsi_shutdown() {
108 printf("[PISCSI] Shutting down PiSCSI.\n");
109 for (int i = 0; i < 8; i++) {
110 if (devs[i].fd != -1) {
116 for (int i = 0; i < NUM_FILESYSTEMS; i++) {
117 if (filesystems[i].binary_data) {
118 free(filesystems[i].binary_data);
119 filesystems[i].binary_data = NULL;
121 if (filesystems[i].fhb) {
122 free(filesystems[i].fhb);
123 filesystems[i].fhb = NULL;
125 filesystems[i].h_info.current_hunk = 0;
126 filesystems[i].h_info.reloc_hunks = 0;
127 filesystems[i].FS_ID = 0;
128 filesystems[i].handler = 0;
132 void piscsi_find_partitions(struct piscsi_dev *d) {
134 int cur_partition = 0;
137 for (int i = 0; i < 16; i++) {
144 if (!d->rdb || d->rdb->rdb_PartitionList == 0) {
145 DEBUG("[PISCSI] No partitions on disk.\n");
149 char *block = malloc(512);
151 lseek(fd, BE(d->rdb->rdb_PartitionList) * 512, SEEK_SET);
153 read(fd, block, 512);
155 uint32_t first = be32toh(*((uint32_t *)&block[0]));
156 if (first != PART_IDENTIFIER) {
157 DEBUG("Entry at block %d is not a valid partition. Aborting.\n", BE(d->rdb->rdb_PartitionList));
161 struct PartitionBlock *pb = (struct PartitionBlock *)block;
162 tmp = pb->pb_DriveName[0];
163 pb->pb_DriveName[tmp + 1] = 0x00;
164 DEBUG("[PISCSI] Partition %d: %s\n", cur_partition, pb->pb_DriveName + 1);
165 DEBUG("Checksum: %.8X HostID: %d\n", BE(pb->pb_ChkSum), BE(pb->pb_HostID));
166 DEBUG("Flags: %d (%.8X) Devflags: %d (%.8X)\n", BE(pb->pb_Flags), BE(pb->pb_Flags), BE(pb->pb_DevFlags), BE(pb->pb_DevFlags));
167 d->pb[cur_partition] = pb;
169 if (d->pb[cur_partition]->pb_Next != 0xFFFFFFFF) {
170 uint64_t next = be32toh(pb->pb_Next);
172 lseek64(fd, next * 512, SEEK_SET);
174 DEBUG("[PISCSI] Next partition at block %d.\n", be32toh(pb->pb_Next));
177 DEBUG("[PISCSI] No more partitions on disk.\n");
178 d->num_partitions = cur_partition + 1;
179 d->fshd_offs = lseek64(fd, 0, SEEK_CUR);
184 int piscsi_parse_rdb(struct piscsi_dev *d) {
187 uint8_t *block = malloc(512);
189 lseek(fd, 0, SEEK_SET);
190 for (i = 0; i < RDB_BLOCK_LIMIT; i++) {
191 read(fd, block, 512);
192 uint32_t first = be32toh(*((uint32_t *)&block[0]));
193 if (first == RDB_IDENTIFIER)
198 struct RigidDiskBlock *rdb = (struct RigidDiskBlock *)block;
199 DEBUG("[PISCSI] RDB found at block %d.\n", i);
200 d->c = be32toh(rdb->rdb_Cylinders);
201 d->h = be32toh(rdb->rdb_Heads);
202 d->s = be32toh(rdb->rdb_Sectors);
203 d->num_partitions = 0;
204 DEBUG("[PISCSI] RDB - first partition at block %d.\n", be32toh(rdb->rdb_PartitionList));
208 sprintf(d->rdb->rdb_DriveInitName, "pi-scsi.device");
218 void piscsi_refresh_drives() {
221 for (int i = 0; i < NUM_FILESYSTEMS; i++) {
222 if (filesystems[i].binary_data) {
223 free(filesystems[i].binary_data);
224 filesystems[i].binary_data = NULL;
226 if (filesystems[i].fhb) {
227 free(filesystems[i].fhb);
228 filesystems[i].fhb = NULL;
230 filesystems[i].h_info.current_hunk = 0;
231 filesystems[i].h_info.reloc_hunks = 0;
232 filesystems[i].FS_ID = 0;
233 filesystems[i].handler = 0;
238 for (int i = 0; i < NUM_UNITS; i++) {
239 if (devs[i].fd != -1) {
240 piscsi_parse_rdb(&devs[i]);
241 piscsi_find_partitions(&devs[i]);
242 piscsi_find_filesystems(&devs[i]);
247 void piscsi_find_filesystems(struct piscsi_dev *d) {
248 if (!d->num_partitions)
251 uint8_t fs_found = 0;
253 uint8_t *fhb_block = malloc(512);
255 lseek64(d->fd, d->fshd_offs, SEEK_SET);
257 struct FileSysHeaderBlock *fhb = (struct FileSysHeaderBlock *)fhb_block;
258 read(d->fd, fhb_block, 512);
260 while (BE(fhb->fhb_ID) == FS_IDENTIFIER) {
261 char *dosID = (char *)&fhb->fhb_DosType;
263 uint16_t *fsVer = (uint16_t *)&fhb->fhb_Version;
265 DEBUG("[FSHD] FSHD Block found.\n");
266 DEBUG("[FSHD] HostID: %d Next: %d Size: %d\n", BE(fhb->fhb_HostID), BE(fhb->fhb_Next), BE(fhb->fhb_SummedLongs));
267 DEBUG("[FSHD] Flags: %.8X DOSType: %c%c%c/%d\n", BE(fhb->fhb_Flags), dosID[0], dosID[1], dosID[2], dosID[3]);
268 DEBUG("[FSHD] Version: %d.%d\n", BE16(fsVer[0]), BE16(fsVer[1]));
269 DEBUG("[FSHD] Patchflags: %d Type: %d\n", BE(fhb->fhb_PatchFlags), BE(fhb->fhb_Type));
270 DEBUG("[FSHD] Task: %d Lock: %d\n", BE(fhb->fhb_Task), BE(fhb->fhb_Lock));
271 DEBUG("[FSHD] Handler: %d StackSize: %d\n", BE(fhb->fhb_Handler), BE(fhb->fhb_StackSize));
272 DEBUG("[FSHD] Prio: %d Startup: %d\n", BE(fhb->fhb_Priority), BE(fhb->fhb_Startup));
273 DEBUG("[FSHD] SegListBlocks: %d GlobalVec: %d\n", BE(fhb->fhb_Priority), BE(fhb->fhb_Startup));
274 DEBUG("[FSHD] FileSysName: %s\n", fhb->fhb_FileSysName + 1);
277 for (int i = 0; i < NUM_FILESYSTEMS; i++) {
278 if (filesystems[i].FS_ID == fhb->fhb_DosType) {
279 DEBUG("[FSHD] File system %c%c%c/%d already loaded. Skipping.\n", dosID[0], dosID[1], dosID[2], dosID[3]);
280 if (BE(fhb->fhb_Next) == 0xFFFFFFFF)
283 goto skip_fs_load_lseg;
287 if (load_lseg(d->fd, &filesystems[piscsi_num_fs].binary_data, &filesystems[piscsi_num_fs].h_info, filesystems[piscsi_num_fs].relocs) != -1) {
288 filesystems[piscsi_num_fs].FS_ID = fhb->fhb_DosType;
289 filesystems[piscsi_num_fs].fhb = fhb;
290 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]);
296 lseek64(d->fd, BE(fhb->fhb_Next) * 512, SEEK_SET);
297 fhb_block = malloc(512);
298 fhb = (struct FileSysHeaderBlock *)fhb_block;
299 read(d->fd, fhb_block, 512);
303 DEBUG("[!!!FSHD] No file systems found on hard drive!\n");
311 void piscsi_map_drive(char *filename, uint8_t index) {
313 printf("[PISCSI] Drive index %d out of range.\nUnable to map file %s to drive.\n", index, filename);
317 int32_t tmp_fd = open(filename, O_RDWR);
319 printf("[PISCSI] Failed to open file %s, could not map drive %d.\n", filename, index);
323 struct piscsi_dev *d = &devs[index];
325 uint64_t file_size = lseek(tmp_fd, 0, SEEK_END);
328 lseek(tmp_fd, 0, SEEK_SET);
329 printf("[PISCSI] Map %d: [%s] - %llu bytes.\n", index, filename, file_size);
331 if (piscsi_parse_rdb(d) == -1) {
332 DEBUG("[PISCSI] No RDB found on disk, making up some CHS values.\n");
335 d->c = (file_size / 512) / (d->s * d->h);
337 printf("[PISCSI] CHS: %d %d %d\n", d->c, d->h, d->s);
339 printf ("Finding partitions.\n");
340 piscsi_find_partitions(d);
341 printf ("Finding file systems.\n");
342 piscsi_find_filesystems(d);
346 void piscsi_unmap_drive(uint8_t index) {
347 if (devs[index].fd != -1) {
348 DEBUG("[PISCSI] Unmapped drive %d.\n", index);
349 close (devs[index].fd);
354 char *io_cmd_name(int index) {
356 case CMD_INVALID: return "INVALID";
357 case CMD_RESET: return "RESET";
358 case CMD_READ: return "READ";
359 case CMD_WRITE: return "WRITE";
360 case CMD_UPDATE: return "UPDATE";
361 case CMD_CLEAR: return "CLEAR";
362 case CMD_STOP: return "STOP";
363 case CMD_START: return "START";
364 case CMD_FLUSH: return "FLUSH";
365 case TD_MOTOR: return "TD_MOTOR";
366 case TD_SEEK: return "SEEK";
367 case TD_FORMAT: return "FORMAT";
368 case TD_REMOVE: return "REMOVE";
369 case TD_CHANGENUM: return "CHANGENUM";
370 case TD_CHANGESTATE: return "CHANGESTATE";
371 case TD_PROTSTATUS: return "PROTSTATUS";
372 case TD_RAWREAD: return "RAWREAD";
373 case TD_RAWWRITE: return "RAWWRITE";
374 case TD_GETDRIVETYPE: return "GETDRIVETYPE";
375 case TD_GETNUMTRACKS: return "GETNUMTRACKS";
376 case TD_ADDCHANGEINT: return "ADDCHANGEINT";
377 case TD_REMCHANGEINT: return "REMCHANGEINT";
378 case TD_GETGEOMETRY: return "GETGEOMETRY";
379 case TD_EJECT: return "EJECT";
380 case TD_LASTCOMM: return "LASTCOMM/READ64";
381 case TD_WRITE64: return "WRITE64";
382 case HD_SCSICMD: return "HD_SCSICMD";
383 case NSCMD_DEVICEQUERY: return "NSCMD_DEVICEQUERY";
384 case NSCMD_TD_READ64: return "NSCMD_TD_READ64";
385 case NSCMD_TD_WRITE64: return "NSCMD_TD_WRITE64";
386 case NSCMD_TD_FORMAT64: return "NSCMD_TD_FORMAT64";
389 return "[!!!PISCSI] Unhandled IO command";
393 #define GETSCSINAME(a) case a: return ""#a"";
394 #define SCSIUNHANDLED(a) return "[!!!PISCSI] Unhandled SCSI command "#a"";
396 char *scsi_cmd_name(int index) {
398 GETSCSINAME(SCSICMD_TEST_UNIT_READY);
399 GETSCSINAME(SCSICMD_INQUIRY);
400 GETSCSINAME(SCSICMD_READ_6);
401 GETSCSINAME(SCSICMD_WRITE_6);
402 GETSCSINAME(SCSICMD_READ_10);
403 GETSCSINAME(SCSICMD_WRITE_10);
404 GETSCSINAME(SCSICMD_READ_CAPACITY_10);
405 GETSCSINAME(SCSICMD_MODE_SENSE_6);
406 GETSCSINAME(SCSICMD_READ_DEFECT_DATA_10);
408 return "[!!!PISCSI] Unhandled SCSI command";
412 void print_piscsi_debug_message(int index) {
417 DEBUG("[PISCSI] Initializing devices.\n");
420 if (piscsi_dbg[0] != 255) {
421 DEBUG("[PISCSI] Opening device %d (%d). Flags: %d (%.2X)\n", piscsi_dbg[0], piscsi_dbg[2], piscsi_dbg[1], piscsi_dbg[1]);
425 DEBUG("[PISCSI] Cleaning up.\n");
428 DEBUG("[PISCSI] C/H/S: %d / %d / %d\n", piscsi_dbg[0], piscsi_dbg[1], piscsi_dbg[2]);
431 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]);
434 DEBUG("[PISCSI] AbortIO!\n");
437 DEBUG("[PISCSI] SCSI Command %d (%s)\n", piscsi_dbg[1], scsi_cmd_name(piscsi_dbg[1]));
438 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]);
440 case DBG_SCSI_UNKNOWN_MODESENSE:
441 DEBUG("[!!!PISCSI] SCSI: Unknown modesense %.4X\n", piscsi_dbg[0]);
443 case DBG_SCSI_UNKNOWN_COMMAND:
444 DEBUG("[!!!PISCSI] SCSI: Unknown command %.4X\n", piscsi_dbg[0]);
447 DEBUG("[!!!PISCSI] SCSI: An error occured: %.4X\n", piscsi_dbg[0]);
450 DEBUG_TRIVIAL("[PISCSI] IO Command %d (%s)\n", piscsi_dbg[0], io_cmd_name(piscsi_dbg[0]));
452 case DBG_IOCMD_UNHANDLED:
453 DEBUG("[!!!PISCSI] WARN: IO command %.4X (%s) is unhandled by driver.\n", piscsi_dbg[0], io_cmd_name(piscsi_dbg[0]));
455 case DBG_SCSI_FORMATDEVICE:
456 DEBUG("[PISCSI] Get SCSI FormatDevice MODE SENSE.\n");
459 DEBUG("[PISCSI] Get SCSI RDG MODE SENSE.\n");
461 case DBG_SCSICMD_RW10:
463 r = get_mapped_item_by_address(cfg, piscsi_dbg[0]);
464 struct SCSICmd_RW10 *rwdat = NULL;
467 uint32_t addr = piscsi_dbg[0] - cfg->map_offset[r];
468 rwdat = (struct SCSICmd_RW10 *)(&cfg->map_data[r][addr]);
471 DEBUG_TRIVIAL("[RW10] scsiData: %.8X\n", piscsi_dbg[0]);
472 for (int i = 0; i < 10; i++) {
473 data[i] = read8(piscsi_dbg[0] + i);
478 DEBUG_TRIVIAL("[RW10] CMD: %.2X\n", rwdat->opcode);
479 DEBUG_TRIVIAL("[RW10] RDP: %.2X\n", rwdat->rdprotect_flags);
480 DEBUG_TRIVIAL("[RW10] Block: %d (%d)\n", rwdat->block, BE(rwdat->block));
481 DEBUG_TRIVIAL("[RW10] Res_Group: %.2X\n", rwdat->res_groupnum);
482 DEBUG_TRIVIAL("[RW10] Len: %d (%d)\n", rwdat->len, BE16(rwdat->len));
486 case DBG_SCSI_DEBUG_MODESENSE_6:
487 DEBUG_TRIVIAL("[PISCSI] SCSI ModeSense debug. Data: %.8X\n", piscsi_dbg[0]);
488 r = get_mapped_item_by_address(cfg, piscsi_dbg[0]);
491 uint32_t addr = piscsi_dbg[0] - cfg->map_offset[r];
492 struct SCSICmd_ModeSense6 *sense = (struct SCSICmd_ModeSense6 *)(&cfg->map_data[r][addr]);
493 DEBUG_TRIVIAL("[SenseData] CMD: %.2X\n", sense->opcode);
494 DEBUG_TRIVIAL("[SenseData] DBD: %d\n", sense->reserved_dbd & 0x04);
495 DEBUG_TRIVIAL("[SenseData] PC: %d\n", (sense->pc_pagecode & 0xC0 >> 6));
496 DEBUG_TRIVIAL("[SenseData] PageCodes: %.2X %.2X\n", (sense->pc_pagecode & 0x3F), sense->subpage_code);
497 DEBUG_TRIVIAL("[SenseData] AllocLen: %d\n", sense->alloc_len);
498 DEBUG_TRIVIAL("[SenseData] Control: %.2X (%d)\n", sense->control, sense->control);
502 DEBUG("[!!!PISCSI] ModeSense data not immediately available.\n");
506 DEBUG("[!!!PISCSI] No debug message available for index %d.\n", index);
511 #define DEBUGME_SIMPLE(i, s) case i: DEBUG(s); break;
513 void piscsi_debugme(uint32_t index) {
515 DEBUGME_SIMPLE(1, "[PISCSI-DEBUGME] Arrived at DiagEntry.\n");
516 DEBUGME_SIMPLE(3, "[PISCSI-DEBUGME] Init: Interrupt disable.\n");
517 DEBUGME_SIMPLE(4, "[PISCSI-DEBUGME] Init: Copy/reloc driver.\n");
518 DEBUGME_SIMPLE(5, "[PISCSI-DEBUGME] Init: InitResident.\n");
519 DEBUGME_SIMPLE(7, "[PISCSI-DEBUGME] Init: Begin partition loop.\n");
520 DEBUGME_SIMPLE(8, "[PISCSI-DEBUGME] Init: Partition loop done. Cleaning up and returning to Exec.\n");
521 DEBUGME_SIMPLE(9, "[PISCSI-DEBUGME] Init: Load file systems.\n");
522 DEBUGME_SIMPLE(10, "[PISCSI-DEBUGME] Init: AllocMem for resident.\n");
523 DEBUGME_SIMPLE(11, "[PISCSI-DEBUGME] Init: Checking if resident is loaded.\n");
524 DEBUGME_SIMPLE(22, "[PISCSI-DEBUGME] Arrived at BootEntry.\n");
525 DEBUGME_SIMPLE(30, "[PISCSI-DEBUGME] LoadFileSystems: Opening FileSystem.resource.\n");
526 DEBUGME_SIMPLE(33, "[PISCSI-DEBUGME] FileSystem.resource not available, creating.\n");
528 DEBUG("[PISCSI-DEBUGME] OpenResource result: %d\n", piscsi_u32[0]);
534 DEBUG("[!!!PISCSI-DEBUGME] No debugme message for index %d!\n", index);
539 stop_cpu_emulation(1);
543 void handle_piscsi_write(uint32_t addr, uint32_t val, uint8_t type) {
549 struct piscsi_dev *d = &devs[piscsi_cur_drive];
551 uint16_t cmd = (addr & 0xFFFF);
554 case PISCSI_CMD_READ64:
555 case PISCSI_CMD_READ:
558 DEBUG("[!!!PISCSI] BUG: Attempted read from unmapped drive %d.\n", val);
562 if (cmd == PISCSI_CMD_READ) {
563 DEBUG("[PISCSI-%d] %d byte READ from block %d to address %.8X\n", val, piscsi_u32[1], piscsi_u32[0], piscsi_u32[2]);
564 d->lba = piscsi_u32[0];
565 lseek(d->fd, (piscsi_u32[0] * 512), SEEK_SET);
568 uint64_t src = piscsi_u32[3];
569 src = (src << 32) | piscsi_u32[0];
570 DEBUG("[PISCSI-%d] %d byte READ64 from block %lld to address %.8X\n", val, piscsi_u32[1], (src / 512), piscsi_u32[2]);
571 d->lba = (src / 512);
572 lseek64(d->fd, src, SEEK_SET);
575 r = get_mapped_item_by_address(cfg, piscsi_u32[2]);
576 if (r != -1 && cfg->map_type[r] == MAPTYPE_RAM) {
577 DEBUG_TRIVIAL("[PISCSI-%d] \"DMA\" Read goes to mapped range %d.\n", val, r);
578 read(d->fd, cfg->map_data[r] + piscsi_u32[2] - cfg->map_offset[r], piscsi_u32[1]);
581 DEBUG_TRIVIAL("[PISCSI-%d] No mapped range found for read.\n", val);
583 for (uint32_t i = 0; i < piscsi_u32[1]; i++) {
585 write8(piscsi_u32[2] + i, (uint32_t)c);
589 case PISCSI_CMD_WRITE64:
590 case PISCSI_CMD_WRITE:
593 DEBUG ("[PISCSI] BUG: Attempted write to unmapped drive %d.\n", val);
597 if (cmd == PISCSI_CMD_WRITE) {
598 DEBUG("[PISCSI-%d] %d byte WRITE to block %d from address %.8X\n", val, piscsi_u32[1], piscsi_u32[0], piscsi_u32[2]);
599 d->lba = piscsi_u32[0];
600 lseek(d->fd, (piscsi_u32[0] * 512), SEEK_SET);
603 uint64_t src = piscsi_u32[3];
604 src = (src << 32) | piscsi_u32[0];
605 DEBUG("[PISCSI-%d] %d byte WRITE64 to block %lld from address %.8X\n", val, piscsi_u32[1], (src / 512), piscsi_u32[2]);
606 d->lba = (src / 512);
607 lseek64(d->fd, src, SEEK_SET);
610 r = get_mapped_item_by_address(cfg, piscsi_u32[2]);
612 DEBUG_TRIVIAL("[PISCSI-%d] \"DMA\" Write comes from mapped range %d.\n", val, r);
613 write(d->fd, cfg->map_data[r] + piscsi_u32[2] - cfg->map_offset[r], piscsi_u32[1]);
616 DEBUG_TRIVIAL("[PISCSI-%d] No mapped range found for write.\n", val);
618 for (uint32_t i = 0; i < piscsi_u32[1]; i++) {
619 c = read8(piscsi_u32[2] + i);
624 case PISCSI_CMD_ADDR1: case PISCSI_CMD_ADDR2: case PISCSI_CMD_ADDR3: case PISCSI_CMD_ADDR4: {
625 int i = ((addr & 0xFFFF) - PISCSI_CMD_ADDR1) / 4;
629 case PISCSI_CMD_DRVNUM:
630 //printf("%d ", val);
632 piscsi_cur_drive = 255;
634 piscsi_cur_drive = val / 10;
635 if (piscsi_cur_drive > NUM_UNITS)
636 piscsi_cur_drive = 255;
638 if (piscsi_cur_drive != 255) {
639 DEBUG("[PISCSI] (%s) Drive number set to %d (%d)\n", op_type_names[type], piscsi_cur_drive, val);
642 case PISCSI_CMD_DEBUGME:
645 case PISCSI_CMD_DRIVER: {
646 DEBUG("[PISCSI] Driver copy/patch called, destination address %.8X.\n", val);
647 int r = get_mapped_item_by_address(cfg, val);
649 uint32_t addr = val - cfg->map_offset[r];
650 uint8_t *dst_data = cfg->map_data[r];
651 uint8_t cur_partition = 0;
652 memcpy(dst_data + addr, piscsi_rom_ptr + PISCSI_DRIVER_OFFSET, 0x4000 - PISCSI_DRIVER_OFFSET);
654 piscsi_hinfo.base_offset = val;
656 reloc_hunks(piscsi_hreloc, dst_data + addr, &piscsi_hinfo);
658 #define PUTNODELONG(val) *(uint32_t *)&dst_data[p_offs] = htobe32(val); p_offs += 4;
659 #define PUTNODELONGBE(val) *(uint32_t *)&dst_data[p_offs] = val; p_offs += 4;
661 for (int i = 0; i < 128; i++) {
662 rom_partitions[i] = 0;
663 rom_partition_prio[i] = 0;
664 rom_partition_dostype[i] = 0;
666 rom_cur_partition = 0;
668 uint32_t data_addr = addr + 0x3F00;
669 sprintf((char *)dst_data + data_addr, "pi-scsi.device");
670 uint32_t addr2 = addr + 0x4000;
671 for (int i = 0; i < NUM_UNITS; i++) {
672 if (devs[i].fd != -1)
673 piscsi_find_partitions(&devs[i]);
677 if (devs[i].num_partitions) {
678 uint32_t p_offs = addr2;
679 DEBUG("[PISCSI] Adding %d partitions for unit %d\n", devs[i].num_partitions, i);
680 for (uint32_t j = 0; j < devs[i].num_partitions; j++) {
681 DEBUG("Partition %d: %s\n", j, devs[i].pb[j]->pb_DriveName + 1);
682 sprintf((char *)dst_data + p_offs, "%s", devs[i].pb[j]->pb_DriveName + 1);
684 PUTNODELONG(addr2 + cfg->map_offset[r]);
685 PUTNODELONG(data_addr + cfg->map_offset[r]);
686 PUTNODELONG((i * 10));
688 uint32_t nodesize = (be32toh(devs[i].pb[j]->pb_Environment[0]) + 1) * 4;
689 memcpy(dst_data + p_offs, devs[i].pb[j]->pb_Environment, nodesize);
691 struct pihd_dosnode_data *dat = (struct pihd_dosnode_data *)(&dst_data[addr2+0x20]);
693 if (BE(devs[i].pb[j]->pb_Flags) & 0x01) {
694 DEBUG("Partition is bootable.\n");
695 rom_partition_prio[cur_partition] = 0;
699 DEBUG("Partition is not bootable.\n");
700 rom_partition_prio[cur_partition] = -128;
701 dat->priority = htobe32(-128);
704 DEBUG("DOSNode Data:\n");
705 DEBUG("Name: %s Device: %s\n", dst_data + addr2, dst_data + data_addr);
706 DEBUG("Unit: %d Flags: %d Pad1: %d\n", BE(dat->unit), BE(dat->flags), BE(dat->pad1));
707 DEBUG("Node len: %d Block len: %d\n", BE(dat->node_len) * 4, BE(dat->block_len) * 4);
708 DEBUG("H: %d SPB: %d BPS: %d\n", BE(dat->surf), BE(dat->secs_per_block), BE(dat->blocks_per_track));
709 DEBUG("Reserved: %d Prealloc: %d\n", BE(dat->reserved_blocks), BE(dat->pad2));
710 DEBUG("Interleaved: %d Buffers: %d Memtype: %d\n", BE(dat->interleave), BE(dat->buffers), BE(dat->mem_type));
711 DEBUG("Lowcyl: %d Highcyl: %d Prio: %d\n", BE(dat->lowcyl), BE(dat->highcyl), BE(dat->priority));
712 DEBUG("Maxtransfer: %.8X Mask: %.8X\n", BE(dat->maxtransfer), BE(dat->transfer_mask));
713 DEBUG("DOSType: %.8X\n", BE(dat->dostype));
715 rom_partitions[cur_partition] = addr2 + 0x20 + cfg->map_offset[r];
716 rom_partition_dostype[cur_partition] = dat->dostype;
728 case PISCSI_CMD_NEXTPART:
729 DEBUG("[PISCSI] Switch partition %d -> %d\n", rom_cur_partition, rom_cur_partition + 1);
732 case PISCSI_CMD_NEXTFS:
733 DEBUG("[PISCSI] Switch file file system %d -> %d\n", rom_cur_fs, rom_cur_fs + 1);
736 case PISCSI_CMD_COPYFS:
737 DEBUG("[PISCSI] Copy file system %d to %.8X and reloc.\n", rom_cur_fs, piscsi_u32[2]);
738 r = get_mapped_item_by_address(cfg, piscsi_u32[2]);
740 uint32_t addr = piscsi_u32[2] - cfg->map_offset[r];
741 memset(cfg->map_data[r] + addr, 0x00, filesystems[rom_cur_fs].h_info.alloc_size);
742 memcpy(cfg->map_data[r] + addr, filesystems[rom_cur_fs].binary_data, filesystems[rom_cur_fs].h_info.byte_size);
743 filesystems[rom_cur_fs].h_info.base_offset = piscsi_u32[2];
744 reloc_hunks(filesystems[rom_cur_fs].relocs, cfg->map_data[r] + addr, &filesystems[rom_cur_fs].h_info);
745 filesystems[rom_cur_fs].handler = piscsi_u32[2];
748 case PISCSI_CMD_SETFSH: {
750 DEBUG("[PISCSI] Set handler for partition %d (DeviceNode: %.8X)\n", rom_cur_partition, val);
751 r = get_mapped_item_by_address(cfg, val);
753 uint32_t addr = val - cfg->map_offset[r];
754 struct DeviceNode *node = (struct DeviceNode *)(cfg->map_data[r] + addr);
756 char *dosID = (char *)&rom_partition_dostype[rom_cur_partition];
758 DEBUG("[PISCSI] Partition DOSType is %c%c%c/%d\n", dosID[0], dosID[1], dosID[2], dosID[3]);
759 for (i = 0; i < piscsi_num_fs; i++) {
760 if (rom_partition_dostype[rom_cur_partition] == filesystems[i].FS_ID) {
761 node->dn_SegList = htobe32((filesystems[i].handler >> 2));
762 node->dn_GlobalVec = 0xFFFFFFFF;
766 DEBUG("[!!!PISCSI] Found no handler for file system!\n");
768 DEBUG("[FS-HANDLER] Next: %d Type: %.8X\n", BE(node->dn_Next), BE(node->dn_Type));
769 DEBUG("[FS-HANDLER] Task: %d Lock: %d\n", BE(node->dn_Task), BE(node->dn_Lock));
770 DEBUG("[FS-HANDLER] Handler: %d Stacksize: %d\n", BE((uint32_t)node->dn_Handler), BE(node->dn_StackSize));
771 DEBUG("[FS-HANDLER] Priority: %d Startup: %d\n", BE((uint32_t)node->dn_Priority), BE(node->dn_Startup));
772 DEBUG("[FS-HANDLER] SegList: %.8X GlobalVec: %d\n", BE((uint32_t)node->dn_SegList), BE(node->dn_GlobalVec));
773 DEBUG("[PISCSI] Handler for partition %.8X set to %.8X (%.8X).\n", BE((uint32_t)node->dn_Name), filesystems[i].FS_ID, filesystems[i].handler);
777 case PISCSI_DBG_VAL1: case PISCSI_DBG_VAL2: case PISCSI_DBG_VAL3: case PISCSI_DBG_VAL4:
778 case PISCSI_DBG_VAL5: case PISCSI_DBG_VAL6: case PISCSI_DBG_VAL7: case PISCSI_DBG_VAL8: {
779 int i = ((addr & 0xFFFF) - PISCSI_DBG_VAL1) / 4;
784 print_piscsi_debug_message(val);
787 DEBUG("[!!!PISCSI] WARN: Unhandled %s register write to %.8X: %d\n", op_type_names[type], addr, val);
794 uint32_t handle_piscsi_read(uint32_t addr, uint8_t type) {
797 if ((addr & 0xFFFF) >= PISCSI_CMD_ROM) {
798 uint32_t romoffs = (addr & 0xFFFF) - PISCSI_CMD_ROM;
799 if (romoffs < (piscsi_rom_size + PIB)) {
800 //DEBUG("[PISCSI] %s read from Boot ROM @$%.4X (%.8X): ", op_type_names[type], romoffs, addr);
804 v = piscsi_rom_ptr[romoffs - PIB];
805 //DEBUG("%.2X\n", v);
808 v = be16toh(*((uint16_t *)&piscsi_rom_ptr[romoffs - PIB]));
809 //DEBUG("%.4X\n", v);
811 case OP_TYPE_LONGWORD:
812 v = be32toh(*((uint32_t *)&piscsi_rom_ptr[romoffs - PIB]));
813 //DEBUG("%.8X\n", v);
821 switch (addr & 0xFFFF) {
822 case PISCSI_CMD_ADDR1: case PISCSI_CMD_ADDR2: case PISCSI_CMD_ADDR3: case PISCSI_CMD_ADDR4: {
823 int i = ((addr & 0xFFFF) - PISCSI_CMD_ADDR1) / 4;
824 return piscsi_u32[i];
827 case PISCSI_CMD_DRVTYPE:
828 if (devs[piscsi_cur_drive].fd == -1) {
829 DEBUG("[PISCSI] %s Read from DRVTYPE %d, drive not attached.\n", op_type_names[type], piscsi_cur_drive);
832 DEBUG("[PISCSI] %s Read from DRVTYPE %d, drive attached.\n", op_type_names[type], piscsi_cur_drive);
835 case PISCSI_CMD_DRVNUM:
836 return piscsi_cur_drive;
838 case PISCSI_CMD_CYLS:
839 DEBUG("[PISCSI] %s Read from CYLS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].c);
840 return devs[piscsi_cur_drive].c;
842 case PISCSI_CMD_HEADS:
843 DEBUG("[PISCSI] %s Read from HEADS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].h);
844 return devs[piscsi_cur_drive].h;
846 case PISCSI_CMD_SECS:
847 DEBUG("[PISCSI] %s Read from SECS %d: %d\n", op_type_names[type], piscsi_cur_drive, devs[piscsi_cur_drive].s);
848 return devs[piscsi_cur_drive].s;
850 case PISCSI_CMD_BLOCKS: {
851 uint32_t blox = devs[piscsi_cur_drive].fs / 512;
852 DEBUG("[PISCSI] %s Read from BLOCKS %d: %d\n", op_type_names[type], piscsi_cur_drive, (uint32_t)(devs[piscsi_cur_drive].fs / 512));
853 DEBUG("fs: %lld (%d)\n", devs[piscsi_cur_drive].fs, blox);
857 case PISCSI_CMD_GETPART: {
858 DEBUG("[PISCSI] Get ROM partition %d offset: %.8X\n", rom_cur_partition, rom_partitions[rom_cur_partition]);
859 return rom_partitions[rom_cur_partition];
862 case PISCSI_CMD_GETPRIO:
863 DEBUG("[PISCSI] Get partition %d boot priority: %d\n", rom_cur_partition, rom_partition_prio[rom_cur_partition]);
864 return rom_partition_prio[rom_cur_partition];
866 case PISCSI_CMD_CHECKFS:
867 DEBUG("[PISCSI] Get current loaded file system: %.8X\n", filesystems[rom_cur_fs].FS_ID);
868 return filesystems[rom_cur_fs].FS_ID;
869 case PISCSI_CMD_FSSIZE:
870 DEBUG("[PISCSI] Get alloc size of loaded file system: %d\n", filesystems[rom_cur_fs].h_info.alloc_size);
871 return filesystems[rom_cur_fs].h_info.alloc_size;
873 DEBUG("[!!!PISCSI] WARN: Unhandled %s register read from %.8X\n", op_type_names[type], addr);