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root/cebix/BasiliskII/src/AmigaOS/sys_amiga.cpp

Comparing BasiliskII/src/AmigaOS/sys_amiga.cpp (file contents):
Revision 1.3 by cebix, 2000-04-10T18:52:41Z vs.
Revision 1.8 by jlachmann, 2002-06-23T08:27:05Z

#	Line 1 | Line 1
1		/*
2		*  sys_amiga.cpp - System dependent routines, Amiga implementation
3		*
4	<	*  Basilisk II (C) 1997-2000 Christian Bauer
4	>	*  Basilisk II (C) 1997-2001 Christian Bauer
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 24 | Line 24
24		#include <devices/trackdisk.h>
25		#include <devices/scsidisk.h>
26		#include <resources/disk.h>
27	+	#define __USE_SYSBASE
28		#include <proto/dos.h>
29		#include <proto/exec.h>
30		#include <proto/disk.h>
31	+	#include <inline/dos.h>
32	+	#include <inline/exec.h>
33	+	#include <inline/disk.h>
34
35		#include "sysdeps.h"
36		#include "main.h"
#	Line 52 | Line 56 | struct file_handle {
56		ULONG block_size;               // Block size of device (must be a power of two)
57		bool is_nsd;                    // New style device?
58		bool does_64bit;                // Supports 64 bit trackdisk commands?
59	+	bool is_ejected;                // Volume has been (logically) ejected
60	+	bool is_2060scsi;               // Enable workaround for 2060scsi.device CD-ROM TD_READ bug
61		};
62
63
#	Line 76 | Line 82 | void SysInit(void)
82		the_port = CreateMsgPort();
83		tmp_buf = (UBYTE *)AllocMem(TMP_BUF_SIZE, MEMF_CHIP | MEMF_PUBLIC);
84		if (the_port == NULL || tmp_buf == NULL) {
85	<	ErrorAlert(GetString(STR_NO_MEM_ERR));
85	>	ErrorAlert(STR_NO_MEM_ERR);
86		QuitEmulator();
87		}
88		}
#	Line 89 | Line 95 | void SysInit(void)
95		void SysExit(void)
96		{
97		// Delete port and temporary buffer
98	<	if (the_port)
98	>	if (the_port) {
99		DeleteMsgPort(the_port);
100	<	if (tmp_buf)
100	>	the_port = NULL;
101	>	}
102	>	if (tmp_buf) {
103		FreeMem(tmp_buf, TMP_BUF_SIZE);
104	+	tmp_buf = NULL;
105	+	}
106		}
107
108
#	Line 103 | Line 113 | void SysExit(void)
113
114		void SysAddFloppyPrefs(void)
115		{
106	–	#if 0
116		for (int i=0; i<4; i++) {
117		ULONG id = GetUnitID(i);
118		if (id == DRT_150RPM) { // We need an HD drive
119		char str[256];
120	<	sprintf(str, "/dev/mfm.device/%d/0/0/1474560/512", i);
120	>	sprintf(str, "/dev/mfm.device/%d/0/0/2880/512", i);
121		PrefsAddString("floppy", str);
122		}
123		}
115	–	#endif
124		}
125
126
#	Line 208 | Line 216 | void *Sys_open(const char *name, bool re
216		return NULL;
217
218		// Open device
219	<	if (OpenDevice((UBYTE *)dev_name, dev_unit, (struct IORequest *)io, dev_flags)) {
219	>	if (OpenDevice((UBYTE *) dev_name, dev_unit, (struct IORequest *)io, dev_flags)) {
220		D(bug(" couldn't open device\n"));
221		DeleteIORequest(io);
222		return NULL;
#	Line 257 | Line 265 | void *Sys_open(const char *name, bool re
265		fh->block_size = dev_bsize;
266		fh->is_nsd = is_nsd;
267		fh->does_64bit = does_64bit;
268	+	fh->is_ejected = false;
269	+	fh->is_2060scsi = (strcmp(dev_name, "2060scsi.device") == 0);
270		return fh;
271		}
272		}
#	Line 313 | Line 323 | static loff_t send_io_request(file_handl
323		fh->io->io_Length = length;
324		fh->io->io_Offset = offset;
325		fh->io->io_Data = data;
326	<	if (DoIO((struct IORequest *)fh->io) || fh->io->io_Actual != length)
327	<	return 0;
328	<	return fh->io->io_Actual;
326	>
327	>	if (fh->is_2060scsi && fh->block_size == 2048) {
328	>
329	>	// 2060scsi.device has serious problems reading CD-ROMs via TD_READ
330	>	static struct SCSICmd scsi;
331	>	const int SENSE_LENGTH = 256;
332	>	static UBYTE sense_buffer[SENSE_LENGTH];                // Buffer for autosense data
333	>	static UBYTE cmd_buffer[10] = { 0x28, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
334	>
335	>	D(bug("send_io_request length=%lu  offset=%lu\n", length, (ULONG) offset));
336	>
337	>	memset(sense_buffer, 0, sizeof(sense_buffer));
338	>
339	>	scsi.scsi_Command = cmd_buffer;
340	>	scsi.scsi_CmdLength = sizeof(cmd_buffer);
341	>	scsi.scsi_SenseData = sense_buffer;
342	>	scsi.scsi_SenseLength = SENSE_LENGTH;
343	>	scsi.scsi_Flags = SCSIF_AUTOSENSE | (writing ? SCSIF_WRITE : SCSIF_READ);
344	>	scsi.scsi_Data = (UWORD  *) data;
345	>	scsi.scsi_Length = length;
346	>
347	>	ULONG block_offset = (ULONG) offset / fh->block_size;
348	>	ULONG block_length = length / fh->block_size;
349	>
350	>	cmd_buffer[2] = block_offset >> 24;
351	>	cmd_buffer[3] = block_offset >> 16;
352	>	cmd_buffer[4] = block_offset >> 8;
353	>	cmd_buffer[5] = block_offset & 0xff;
354	>
355	>	cmd_buffer[7] = block_length >> 8;
356	>	cmd_buffer[8] = block_length & 0xff;
357	>
358	>	fh->io->io_Command = HD_SCSICMD;
359	>	fh->io->io_Actual = 0;
360	>	fh->io->io_Offset = 0;
361	>	fh->io->io_Data = &scsi;
362	>	fh->io->io_Length = sizeof(scsi);
363	>
364	>	BYTE result = DoIO((struct IORequest *)fh->io);
365	>
366	>	if (result) {
367	>	D(bug("send_io_request SCSI FAIL result=%lu\n", result));
368	>
369	>	if (result == HFERR_BadStatus) {
370	>	D(bug("send_io_request SCSI Status=%lu\n", scsi.scsi_Status));
371	>	if (scsi.scsi_Status == 2) {
372	>	D(bug("send_io_request Sense Key=%02lx\n", sense_buffer[2] & 0x0f));
373	>	D(bug("send_io_request ASC=%02lx  ASCQ=%02lx\n", sense_buffer[12], sense_buffer[13]));
374	>	}
375	>	}
376	>	return 0;
377	>	}
378	>
379	>	D(bug("send_io_request SCSI Actual=%lu\n", scsi.scsi_Actual));
380	>
381	>	if (scsi.scsi_Actual != length)
382	>	return 0;
383	>
384	>	return scsi.scsi_Actual;
385	>
386	>	} else {
387	>
388	>	//              if (DoIO((struct IORequest *)fh->io) || fh->io->io_Actual != length)
389	>	if (DoIO((struct IORequest *)fh->io))
390	>	{
391	>	D(bug("send_io_request/%ld: Actual=%lu  length=%lu  Err=%ld\n", __LINE__, fh->io->io_Actual, length, fh->io->io_Error));
392	>	return 0;
393	>	}
394	>	return fh->io->io_Actual;
395	>	}
396		}
397
398
#	Line 328 | Line 405 | size_t Sys_read(void *arg, void *buffer,
405		{
406		file_handle *fh = (file_handle *)arg;
407		if (!fh)
408	+	{
409	+	D(bug("Sys_read/%ld return 0\n", __LINE__));
410		return 0;
411	+	}
412	+
413	+	D(bug("Sys_read/%ld length=%ld\n", __LINE__, length));
414
415		// File or device?
416		if (fh->is_file) {
417
418		// File, seek to position
419		if (Seek(fh->f, offset + fh->start_byte, OFFSET_BEGINNING) == -1)
420	+	{
421	+	D(bug("Sys_read/%ld return 0\n", __LINE__));
422		return 0;
423	+	}
424
425		// Read data
426		LONG actual = Read(fh->f, buffer, length);
427		if (actual == -1)
428	+	{
429	+	D(bug("Sys_read/%ld return 0\n", __LINE__));
430		return 0;
431	+	}
432		else
433	+	{
434	+	D(bug("Sys_read/%ld return %ld\n", __LINE__, actual));
435		return actual;
436	+	}
437
438		} else {
439
#	Line 354 | Line 445 | size_t Sys_read(void *arg, void *buffer,
445
446		// Yes, read one block
447		if (send_io_request(fh, false, fh->block_size, pos - pre_offset, tmp_buf) == 0)
448	+	{
449	+	D(bug("Sys_read/%ld return %ld\n", __LINE__, 0));
450		return 0;
451	+	}
452
453		// Copy data to destination buffer
454		size_t pre_length = fh->block_size - pre_offset;
#	Line 375 | Line 469 | size_t Sys_read(void *arg, void *buffer,
469		// Yes, read blocks
470		size_t main_length = length & ~(fh->block_size - 1);
471		if (send_io_request(fh, false, main_length, pos, buffer) == 0)
472	+	{
473	+	D(bug("Sys_read/%ld return %ld\n", __LINE__, 0));
474		return 0;
475	+	}
476
477		// Adjust data pointers
478		buffer = (uint8 *)buffer + main_length;
#	Line 389 | Line 486 | size_t Sys_read(void *arg, void *buffer,
486
487		// Yes, read one block
488		if (send_io_request(fh, false, fh->block_size, pos, tmp_buf) == 0)
489	+	{
490	+	D(bug("Sys_read/%ld return %ld\n", __LINE__, 0));
491		return 0;
492	+	}
493
494		// Copy data to destination buffer
495		memcpy(buffer, tmp_buf, length);
496		actual += length;
497		}
498
499	+	D(bug("Sys_read/%ld return %ld\n", __LINE__, actual));
500		return actual;
501		}
502		}
#	Line 410 | Line 511 | size_t Sys_write(void *arg, void *buffer
511		{
512		file_handle *fh = (file_handle *)arg;
513		if (!fh)
514	+	{
515	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, 0));
516		return 0;
517	+	}
518	+
519	+	D(bug("Sys_write/%ld length=%ld\n", __LINE__, length));
520
521		// File or device?
522		if (fh->is_file) {
523
524		// File, seek to position if necessary
525		if (Seek(fh->f, offset + fh->start_byte, OFFSET_BEGINNING) == -1)
526	+	{
527	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, 0));
528		return 0;
529	+	}
530
531		// Write data
532		LONG actual = Write(fh->f, buffer, length);
533		if (actual == -1)
534	+	{
535	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, 0));
536		return 0;
537	+	}
538		else
539	+	{
540	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, actual));
541		return actual;
542	+	}
543
544		} else {
545
#	Line 436 | Line 551 | size_t Sys_write(void *arg, void *buffer
551
552		// Yes, read one block
553		if (send_io_request(fh, false, fh->block_size, pos - pre_offset, tmp_buf) == 0)
554	+	{
555	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, 0));
556		return 0;
557	+	}
558
559		// Copy data from source buffer
560		size_t pre_length = fh->block_size - pre_offset;
#	Line 446 | Line 564 | size_t Sys_write(void *arg, void *buffer
564
565		// Write block back
566		if (send_io_request(fh, true, fh->block_size, pos - pre_offset, tmp_buf) == 0)
567	+	{
568	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, 0));
569		return 0;
570	+	}
571
572		// Adjust data pointers
573		buffer = (uint8 *)buffer + pre_length;
#	Line 461 | Line 582 | size_t Sys_write(void *arg, void *buffer
582		// Yes, write blocks
583		size_t main_length = length & ~(fh->block_size - 1);
584		if (send_io_request(fh, true, main_length, pos, buffer) == 0)
585	+	{
586	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, 0));
587		return 0;
588	+	}
589
590		// Adjust data pointers
591		buffer = (uint8 *)buffer + main_length;
#	Line 475 | Line 599 | size_t Sys_write(void *arg, void *buffer
599
600		// Yes, read one block
601		if (send_io_request(fh, false, fh->block_size, pos, tmp_buf) == 0)
602	+	{
603	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, 0));
604		return 0;
605	+	}
606
607		// Copy data from source buffer
608		memcpy(buffer, tmp_buf, length);
609
610		// Write block back
611		if (send_io_request(fh, true, fh->block_size, pos, tmp_buf) == 0)
612	+	{
613	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, 0));
614		return 0;
615	+	}
616		actual += length;
617		}
618
619	+	D(bug("Sys_write/%ld return %ld\n", __LINE__, actual));
620		return actual;
621		}
622		}
#	Line 528 | Line 659 | void SysEject(void *arg)
659		fh->io->io_Command = TD_EJECT;
660		fh->io->io_Length = 1;
661		DoIO((struct IORequest *)fh->io);
662	+
663	+	fh->is_ejected = true;
664		}
665		}
666
#	Line 565 | Line 698 | bool SysIsReadOnly(void *arg)
698		} else {
699
700		// Device, check write protection
568	–	fh->io->io_Flags = IOF_QUICK;
701		fh->io->io_Command = TD_PROTSTATUS;
702	<	BeginIO((struct IORequest *)fh->io);
702	>	DoIO((struct IORequest *)fh->io);
703		if (fh->io->io_Actual)
704		return true;
705		else
#	Line 605 | Line 737 | bool SysIsDiskInserted(void *arg)
737		else {
738
739		// Check medium status
608	–	fh->io->io_Flags = IOF_QUICK;
740		fh->io->io_Command = TD_CHANGESTATE;
741		fh->io->io_Actual = 0;
742	<	BeginIO((struct IORequest *)fh->io);
743	<	return fh->io->io_Actual == 0;
742	>	DoIO((struct IORequest *)fh->io);
743	>	bool inserted = (fh->io->io_Actual == 0);
744	>
745	>	if (!inserted) {
746	>	// Disk was ejected and has now been taken out
747	>	fh->is_ejected = false;
748	>	}
749	>
750	>	if (fh->is_ejected) {
751	>	// Disk was ejected but has not yet been taken out, report it as
752	>	// no longer in the drive
753	>	return false;
754	>	} else
755	>	return inserted;
756		}
757		}
758

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