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/* |
/* |
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* Copyright (C) 2005 Anders Gavare. All rights reserved. |
* Copyright (C) 2005-2007 Anders Gavare. All rights reserved. |
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* |
* |
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* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
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* SUCH DAMAGE. |
* SUCH DAMAGE. |
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* |
* |
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* |
* |
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* $Id: dev_disk.c,v 1.9 2005/11/13 00:14:08 debug Exp $ |
* $Id: dev_disk.c,v 1.15 2007/06/15 18:44:19 debug Exp $ |
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* |
* |
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* Basic "Disk" device. This is a simple test device which can be used to |
* COMMENT: A simple disk controller device, for the test machines |
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* |
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* Basic "disk" device. This is a simple test device which can be used to |
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* read and write data from disk devices. |
* read and write data from disk devices. |
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*/ |
*/ |
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#include "cpu.h" |
#include "cpu.h" |
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#include "device.h" |
#include "device.h" |
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#include "devices.h" |
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#include "diskimage.h" |
#include "diskimage.h" |
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#include "emul.h" |
#include "emul.h" |
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#include "machine.h" |
#include "machine.h" |
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#include "memory.h" |
#include "memory.h" |
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#include "misc.h" |
#include "misc.h" |
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#include "testmachine/dev_disk.h" |
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#define BUF_SIZE 8192 |
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struct disk_data { |
struct disk_data { |
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int64_t offset; |
int64_t offset; |
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}; |
}; |
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/* |
DEVICE_ACCESS(disk_buf) |
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* dev_disk_buf_access(): |
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*/ |
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int dev_disk_buf_access(struct cpu *cpu, struct memory *mem, |
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uint64_t relative_addr, unsigned char *data, size_t len, |
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int writeflag, void *extra) |
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{ |
{ |
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struct disk_data *d = (struct disk_data *) extra; |
struct disk_data *d = extra; |
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if (writeflag == MEM_WRITE) |
if (writeflag == MEM_WRITE) |
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memcpy(d->buf + relative_addr, data, len); |
memcpy(d->buf + relative_addr, data, len); |
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else |
else |
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memcpy(data, d->buf + relative_addr, len); |
memcpy(data, d->buf + relative_addr, len); |
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return 1; |
return 1; |
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} |
} |
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/* |
DEVICE_ACCESS(disk) |
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* dev_disk_access(): |
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*/ |
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int dev_disk_access(struct cpu *cpu, struct memory *mem, |
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uint64_t relative_addr, unsigned char *data, size_t len, |
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int writeflag, void *extra) |
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{ |
{ |
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struct disk_data *d = (struct disk_data *) extra; |
struct disk_data *d = extra; |
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uint64_t idata = 0, odata = 0; |
uint64_t idata = 0, odata = 0; |
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if (writeflag == MEM_WRITE) |
if (writeflag == MEM_WRITE) |
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idata = memory_readmax64(cpu, data, len); |
idata = memory_readmax64(cpu, data, len); |
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switch (relative_addr) { |
switch (relative_addr) { |
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case 0x00: |
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case DEV_DISK_OFFSET: |
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if (writeflag == MEM_READ) { |
if (writeflag == MEM_READ) { |
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odata = d->offset; |
odata = d->offset; |
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} else { |
} else { |
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d->offset = idata; |
d->offset = idata; |
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} |
} |
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break; |
break; |
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case 0x10: |
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case DEV_DISK_ID: |
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if (writeflag == MEM_READ) { |
if (writeflag == MEM_READ) { |
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odata = d->disk_id; |
odata = d->disk_id; |
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} else { |
} else { |
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d->disk_id = idata; |
d->disk_id = idata; |
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} |
} |
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break; |
break; |
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case 0x20: |
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case DEV_DISK_START_OPERATION: |
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if (writeflag == MEM_READ) { |
if (writeflag == MEM_READ) { |
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odata = d->command; |
odata = d->command; |
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} else { |
} else { |
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d->command = idata; |
d->command = idata; |
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switch (d->command) { |
switch (d->command) { |
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case 0: d->status = diskimage_access(cpu->machine, |
case 0: d->status = diskimage_access(cpu->machine, |
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d->disk_id, DISKIMAGE_SCSI, 0, |
d->disk_id, DISKIMAGE_IDE, 0, |
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d->offset, d->buf, 512); |
d->offset, d->buf, 512); |
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break; |
break; |
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case 1: d->status = diskimage_access(cpu->machine, |
case 1: d->status = diskimage_access(cpu->machine, |
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d->disk_id, DISKIMAGE_SCSI, 1, |
d->disk_id, DISKIMAGE_IDE, 1, |
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d->offset, d->buf, 512); |
d->offset, d->buf, 512); |
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break; |
break; |
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} |
} |
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} |
} |
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break; |
break; |
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case 0x30: |
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case DEV_DISK_STATUS: |
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if (writeflag == MEM_READ) { |
if (writeflag == MEM_READ) { |
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odata = d->status; |
odata = d->status; |
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} else { |
} else { |
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d->status = idata; |
d->status = idata; |
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} |
} |
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break; |
break; |
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default:if (writeflag == MEM_WRITE) { |
default:if (writeflag == MEM_WRITE) { |
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fatal("[ disk: unimplemented write to " |
fatal("[ disk: unimplemented write to " |
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"offset 0x%x: data=0x%x ]\n", (int) |
"offset 0x%x: data=0x%x ]\n", (int) |
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} |
} |
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/* |
DEVINIT(disk) |
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* devinit_disk(): |
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*/ |
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int devinit_disk(struct devinit *devinit) |
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{ |
{ |
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struct disk_data *d = malloc(sizeof(struct disk_data)); |
struct disk_data *d; |
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size_t nlen; |
size_t nlen; |
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char *n1, *n2; |
char *n1, *n2; |
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nlen = strlen(devinit->name) + 30; |
CHECK_ALLOCATION(d = malloc(sizeof(struct disk_data))); |
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n1 = malloc(nlen); |
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n2 = malloc(nlen); |
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if (d == NULL || n1 == NULL || n2 == NULL) { |
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fprintf(stderr, "out of memory\n"); |
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exit(1); |
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} |
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memset(d, 0, sizeof(struct disk_data)); |
memset(d, 0, sizeof(struct disk_data)); |
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d->buf = malloc(devinit->machine->arch_pagesize); |
nlen = strlen(devinit->name) + 30; |
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if (d->buf == NULL) { |
CHECK_ALLOCATION(n1 = malloc(nlen)); |
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fprintf(stderr, "out of memory\n"); |
CHECK_ALLOCATION(n2 = malloc(nlen)); |
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exit(1); |
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} |
CHECK_ALLOCATION(d->buf = malloc(devinit->machine->arch_pagesize)); |
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memset(d->buf, 0, devinit->machine->arch_pagesize); |
memset(d->buf, 0, devinit->machine->arch_pagesize); |
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snprintf(n1, nlen, "%s [control]", devinit->name); |
snprintf(n1, nlen, "%s [control]", devinit->name); |
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snprintf(n2, nlen, "%s [data buffer]", devinit->name); |
snprintf(n2, nlen, "%s [data buffer]", devinit->name); |
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memory_device_register(devinit->machine->memory, n1, |
memory_device_register(devinit->machine->memory, n1, |
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devinit->addr, 0x4000, dev_disk_access, (void *)d, |
devinit->addr, DEV_DISK_BUFFER, dev_disk_access, (void *)d, |
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DM_DEFAULT, NULL); |
DM_DEFAULT, NULL); |
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memory_device_register(devinit->machine->memory, n2, |
memory_device_register(devinit->machine->memory, n2, |
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devinit->addr + 0x4000, devinit->machine->arch_pagesize, |
devinit->addr + DEV_DISK_BUFFER, |
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dev_disk_buf_access, (void *)d, DM_DYNTRANS_OK | |
devinit->machine->arch_pagesize, dev_disk_buf_access, |
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DM_DYNTRANS_WRITE_OK | DM_READS_HAVE_NO_SIDE_EFFECTS, d->buf); |
(void *)d, DM_DYNTRANS_OK | DM_DYNTRANS_WRITE_OK | |
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DM_READS_HAVE_NO_SIDE_EFFECTS, d->buf); |
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return 1; |
return 1; |
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} |
} |