| 1 |
/* |
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* Copyright (C) 2003-2006 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
| 5 |
* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
| 8 |
* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
| 10 |
* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: diskimage.c,v 1.114 2006/09/07 11:44:01 debug Exp $ |
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* |
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* Disk image support. |
| 31 |
* |
| 32 |
* TODO: There's probably a bug in the tape support: |
| 33 |
* Let's say there are 10240 bytes left in a file, and 10240 |
| 34 |
* bytes are read. Then feof() is not true yet (?), so the next |
| 35 |
* read will also return 10240 bytes (but all zeroes), and then after |
| 36 |
* that return feof (which results in a filemark). This is probably |
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* trivial to fix, but I don't feel like it right now. |
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* |
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* TODO: diskimage_remove()? This would be useful for floppies in PC-style |
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* machines, where disks may need to be swapped during boot etc. |
| 41 |
*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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|
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#include "cpu.h" |
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#include "diskimage.h" |
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#include "machine.h" |
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#include "misc.h" |
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|
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|
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/* #define debug fatal */ |
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|
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extern int single_step; |
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|
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static char *diskimage_types[] = DISKIMAGE_TYPES; |
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|
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static struct scsi_transfer *first_free_scsi_transfer_alloc = NULL; |
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|
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|
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/**************************************************************************/ |
| 66 |
|
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/* |
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* my_fseek(): |
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* |
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* A helper function, like fseek() but takes off_t. If the system has |
| 71 |
* fseeko, then that is used. Otherwise I try to fake off_t offsets here. |
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* |
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* The correct position is reached by seeking 2 billion bytes at a time |
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* (or less). Note: This method is only used for SEEK_SET, for SEEK_CUR |
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* and SEEK_END, normal fseek() is used! |
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* |
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* TODO: It seemed to work on Linux/i386, but not on Solaris/sparc (?). |
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* Anyway, most modern systems have fseeko(), so it shouldn't be a problem. |
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*/ |
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static int my_fseek(FILE *f, off_t offset, int whence) |
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{ |
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#ifdef HACK_FSEEKO |
| 83 |
if (whence == SEEK_SET) { |
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int res = 0; |
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off_t curoff = 0; |
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off_t cur_step; |
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|
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fseek(f, 0, SEEK_SET); |
| 89 |
while (curoff < offset) { |
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/* How far to seek? */ |
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cur_step = offset - curoff; |
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if (cur_step > 2000000000) |
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cur_step = 2000000000; |
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res = fseek(f, cur_step, SEEK_CUR); |
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if (res) |
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return res; |
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curoff += cur_step; |
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} |
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return 0; |
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} else |
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return fseek(f, offset, whence); |
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#else |
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return fseeko(f, offset, whence); |
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#endif |
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} |
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|
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|
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/**************************************************************************/ |
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|
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|
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/* |
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* scsi_transfer_alloc(): |
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* |
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* Allocates memory for a new scsi_transfer struct, and fills it with |
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* sane data (NULL pointers). |
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* The return value is a pointer to the new struct. If allocation |
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* failed, the program exits. |
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*/ |
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struct scsi_transfer *scsi_transfer_alloc(void) |
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{ |
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struct scsi_transfer *p; |
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|
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if (first_free_scsi_transfer_alloc != NULL) { |
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p = first_free_scsi_transfer_alloc; |
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first_free_scsi_transfer_alloc = p->next_free; |
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} else { |
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p = malloc(sizeof(struct scsi_transfer)); |
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if (p == NULL) { |
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fprintf(stderr, "scsi_transfer_alloc(): out " |
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"of memory\n"); |
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exit(1); |
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} |
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} |
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|
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memset(p, 0, sizeof(struct scsi_transfer)); |
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|
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return p; |
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} |
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|
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|
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/* |
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* scsi_transfer_free(): |
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* |
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* Frees the space used by a scsi_transfer struct. All buffers refered |
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* to by the scsi_transfer struct are freed. |
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*/ |
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void scsi_transfer_free(struct scsi_transfer *p) |
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{ |
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if (p == NULL) { |
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fprintf(stderr, "scsi_transfer_free(): p == NULL\n"); |
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exit(1); |
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} |
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|
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if (p->msg_out != NULL) |
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free(p->msg_out); |
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if (p->cmd != NULL) |
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free(p->cmd); |
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if (p->data_out != NULL) |
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free(p->data_out); |
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|
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if (p->data_in != NULL) |
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free(p->data_in); |
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if (p->msg_in != NULL) |
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free(p->msg_in); |
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if (p->status != NULL) |
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free(p->status); |
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|
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p->next_free = first_free_scsi_transfer_alloc; |
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first_free_scsi_transfer_alloc = p; |
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} |
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|
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|
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/* |
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* scsi_transfer_allocbuf(): |
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* |
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* Helper function, used by diskimage_scsicommand(), and SCSI controller |
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* devices. Example of usage: |
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* |
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* scsi_transfer_allocbuf(&xferp->msg_in_len, &xferp->msg_in, 1); |
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*/ |
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void scsi_transfer_allocbuf(size_t *lenp, unsigned char **pp, size_t want_len, |
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int clearflag) |
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{ |
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unsigned char *p = (*pp); |
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|
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if (p != NULL) { |
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printf("WARNING! scsi_transfer_allocbuf(): old pointer " |
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"was not NULL, freeing it now\n"); |
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free(p); |
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} |
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|
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(*lenp) = want_len; |
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if ((p = malloc(want_len)) == NULL) { |
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fprintf(stderr, "scsi_transfer_allocbuf(): out of " |
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"memory trying to allocate %li bytes\n", (long)want_len); |
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exit(1); |
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} |
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|
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if (clearflag) |
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memset(p, 0, want_len); |
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|
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(*pp) = p; |
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} |
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|
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|
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/**************************************************************************/ |
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|
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|
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/* |
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* diskimage_exist(): |
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* |
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* Returns 1 if the specified disk id (for a specific type) exists, 0 |
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* otherwise. |
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*/ |
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int diskimage_exist(struct machine *machine, int id, int type) |
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{ |
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struct diskimage *d = machine->first_diskimage; |
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|
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while (d != NULL) { |
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if (d->type == type && d->id == id) |
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return 1; |
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d = d->next; |
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} |
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return 0; |
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} |
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|
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|
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/* |
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* diskimage_recalc_size(): |
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* |
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* Recalculate a disk's size by stat()-ing it. |
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* d is assumed to be non-NULL. |
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*/ |
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static void diskimage_recalc_size(struct diskimage *d) |
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{ |
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struct stat st; |
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int res; |
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off_t size = 0; |
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|
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res = stat(d->fname, &st); |
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if (res) { |
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fprintf(stderr, "[ diskimage_recalc_size(): could not stat " |
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"'%s' ]\n", d->fname); |
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return; |
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} |
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|
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size = st.st_size; |
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|
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/* |
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* TODO: CD-ROM devices, such as /dev/cd0c, how can one |
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* check how much data is on that cd-rom without reading it? |
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* For now, assume some large number, hopefully it will be |
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* enough to hold any cd-rom image. |
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*/ |
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if (d->is_a_cdrom && size == 0) |
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size = 762048000; |
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|
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d->total_size = size; |
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d->ncyls = d->total_size / 1048576; |
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|
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/* TODO: There is a mismatch between d->ncyls and d->cylinders, |
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SCSI-based stuff usually doesn't care. TODO: Fix this. */ |
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} |
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|
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|
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/* |
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* diskimage_getsize(): |
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* |
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* Returns -1 if the specified disk id/type does not exists, otherwise |
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* the size of the disk image is returned. |
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*/ |
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int64_t diskimage_getsize(struct machine *machine, int id, int type) |
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{ |
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struct diskimage *d = machine->first_diskimage; |
| 275 |
|
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while (d != NULL) { |
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if (d->type == type && d->id == id) |
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return d->total_size; |
| 279 |
d = d->next; |
| 280 |
} |
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return -1; |
| 282 |
} |
| 283 |
|
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|
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/* |
| 286 |
* diskimage_getchs(): |
| 287 |
* |
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* Returns the current CHS values of a disk image. |
| 289 |
*/ |
| 290 |
void diskimage_getchs(struct machine *machine, int id, int type, |
| 291 |
int *c, int *h, int *s) |
| 292 |
{ |
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struct diskimage *d = machine->first_diskimage; |
| 294 |
|
| 295 |
while (d != NULL) { |
| 296 |
if (d->type == type && d->id == id) { |
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*c = d->cylinders; |
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*h = d->heads; |
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*s = d->sectors_per_track; |
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return; |
| 301 |
} |
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d = d->next; |
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} |
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fatal("diskimage_getchs(): disk id %i (type %i) not found?\n", |
| 305 |
id, diskimage_types[type]); |
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exit(1); |
| 307 |
} |
| 308 |
|
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|
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/* |
| 311 |
* diskimage__return_default_status_and_message(): |
| 312 |
* |
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* Set the status and msg_in parts of a scsi_transfer struct |
| 314 |
* to default values (msg_in = 0x00, status = 0x00). |
| 315 |
*/ |
| 316 |
static void diskimage__return_default_status_and_message( |
| 317 |
struct scsi_transfer *xferp) |
| 318 |
{ |
| 319 |
scsi_transfer_allocbuf(&xferp->status_len, &xferp->status, 1, 0); |
| 320 |
xferp->status[0] = 0x00; |
| 321 |
scsi_transfer_allocbuf(&xferp->msg_in_len, &xferp->msg_in, 1, 0); |
| 322 |
xferp->msg_in[0] = 0x00; |
| 323 |
} |
| 324 |
|
| 325 |
|
| 326 |
/* |
| 327 |
* diskimage__switch_tape(): |
| 328 |
* |
| 329 |
* Used by the SPACE command. (d is assumed to be non-NULL.) |
| 330 |
*/ |
| 331 |
static void diskimage__switch_tape(struct diskimage *d) |
| 332 |
{ |
| 333 |
char tmpfname[1000]; |
| 334 |
|
| 335 |
snprintf(tmpfname, sizeof(tmpfname), "%s.%i", |
| 336 |
d->fname, d->tape_filenr); |
| 337 |
tmpfname[sizeof(tmpfname)-1] = '\0'; |
| 338 |
|
| 339 |
if (d->f != NULL) |
| 340 |
fclose(d->f); |
| 341 |
|
| 342 |
d->f = fopen(tmpfname, d->writable? "r+" : "r"); |
| 343 |
if (d->f == NULL) { |
| 344 |
fprintf(stderr, "[ diskimage__switch_tape(): could not " |
| 345 |
"(re)open '%s' ]\n", tmpfname); |
| 346 |
/* TODO: return error */ |
| 347 |
} |
| 348 |
d->tape_offset = 0; |
| 349 |
} |
| 350 |
|
| 351 |
|
| 352 |
/* |
| 353 |
* diskimage_access__cdrom(): |
| 354 |
* |
| 355 |
* This is a special-case function, called from diskimage__internal_access(). |
| 356 |
* On my FreeBSD 4.9 system, the cdrom device /dev/cd0c seems to not be able |
| 357 |
* to handle something like "fseek(512); fread(512);" but it handles |
| 358 |
* "fseek(2048); fread(512);" just fine. So, if diskimage__internal_access() |
| 359 |
* fails in reading a block of data, this function is called as an attempt to |
| 360 |
* align reads at 2048-byte sectors instead. |
| 361 |
* |
| 362 |
* (Ugly hack. TODO: how to solve this cleanly?) |
| 363 |
* |
| 364 |
* NOTE: Returns the number of bytes read, 0 if nothing was successfully |
| 365 |
* read. (These are not the same as diskimage_access()). |
| 366 |
*/ |
| 367 |
#define CDROM_SECTOR_SIZE 2048 |
| 368 |
static size_t diskimage_access__cdrom(struct diskimage *d, off_t offset, |
| 369 |
unsigned char *buf, size_t len) |
| 370 |
{ |
| 371 |
off_t aligned_offset; |
| 372 |
size_t bytes_read, total_copied = 0; |
| 373 |
unsigned char cdrom_buf[CDROM_SECTOR_SIZE]; |
| 374 |
off_t buf_ofs, i = 0; |
| 375 |
|
| 376 |
/* printf("diskimage_access__cdrom(): offset=0x%llx size=%lli\n", |
| 377 |
(long long)offset, (long long)len); */ |
| 378 |
|
| 379 |
aligned_offset = (offset / CDROM_SECTOR_SIZE) * CDROM_SECTOR_SIZE; |
| 380 |
my_fseek(d->f, aligned_offset, SEEK_SET); |
| 381 |
|
| 382 |
while (len != 0) { |
| 383 |
bytes_read = fread(cdrom_buf, 1, CDROM_SECTOR_SIZE, d->f); |
| 384 |
if (bytes_read != CDROM_SECTOR_SIZE) |
| 385 |
return 0; |
| 386 |
|
| 387 |
/* Copy (part of) cdrom_buf into buf: */ |
| 388 |
buf_ofs = offset - aligned_offset; |
| 389 |
while (buf_ofs < CDROM_SECTOR_SIZE && len != 0) { |
| 390 |
buf[i ++] = cdrom_buf[buf_ofs ++]; |
| 391 |
total_copied ++; |
| 392 |
len --; |
| 393 |
} |
| 394 |
|
| 395 |
aligned_offset += CDROM_SECTOR_SIZE; |
| 396 |
offset = aligned_offset; |
| 397 |
} |
| 398 |
|
| 399 |
return total_copied; |
| 400 |
} |
| 401 |
|
| 402 |
|
| 403 |
/* |
| 404 |
* diskimage__internal_access(): |
| 405 |
* |
| 406 |
* Read from or write to a struct diskimage. |
| 407 |
* |
| 408 |
* Returns 1 if the access completed successfully, 0 otherwise. |
| 409 |
*/ |
| 410 |
static int diskimage__internal_access(struct diskimage *d, int writeflag, |
| 411 |
off_t offset, unsigned char *buf, size_t len) |
| 412 |
{ |
| 413 |
ssize_t lendone; |
| 414 |
int res; |
| 415 |
|
| 416 |
if (buf == NULL) { |
| 417 |
fprintf(stderr, "diskimage__internal_access(): buf = NULL\n"); |
| 418 |
exit(1); |
| 419 |
} |
| 420 |
if (len == 0) |
| 421 |
return 1; |
| 422 |
if (d->f == NULL) |
| 423 |
return 0; |
| 424 |
|
| 425 |
res = my_fseek(d->f, offset, SEEK_SET); |
| 426 |
if (res != 0) { |
| 427 |
fatal("[ diskimage__internal_access(): fseek() failed on " |
| 428 |
"disk id %i \n", d->id); |
| 429 |
return 0; |
| 430 |
} |
| 431 |
|
| 432 |
if (writeflag) { |
| 433 |
if (!d->writable) |
| 434 |
return 0; |
| 435 |
|
| 436 |
lendone = fwrite(buf, 1, len, d->f); |
| 437 |
} else { |
| 438 |
/* |
| 439 |
* Special case for CD-ROMs. Actually, this is not needed |
| 440 |
* for .iso images, only for physical CDROMS on some OSes, |
| 441 |
* such as FreeBSD. |
| 442 |
*/ |
| 443 |
if (d->is_a_cdrom) |
| 444 |
lendone = diskimage_access__cdrom(d, offset, buf, len); |
| 445 |
else |
| 446 |
lendone = fread(buf, 1, len, d->f); |
| 447 |
|
| 448 |
if (lendone < (ssize_t)len) |
| 449 |
memset(buf + lendone, 0, len - lendone); |
| 450 |
} |
| 451 |
|
| 452 |
/* Warn about non-complete data transfers: */ |
| 453 |
if (lendone != (ssize_t)len) { |
| 454 |
#ifdef UNSTABLE_DEVEL |
| 455 |
fatal("[ diskimage__internal_access(): disk_id %i, offset %lli" |
| 456 |
", transfer not completed. len=%i, len_done=%i ]\n", |
| 457 |
d->id, (long long)offset, (int)len, (int)lendone); |
| 458 |
#endif |
| 459 |
return 0; |
| 460 |
} |
| 461 |
|
| 462 |
return 1; |
| 463 |
} |
| 464 |
|
| 465 |
|
| 466 |
/* |
| 467 |
* diskimage_scsicommand(): |
| 468 |
* |
| 469 |
* Perform a SCSI command on a disk image. |
| 470 |
* |
| 471 |
* The xferp points to a scsi_transfer struct, containing msg_out, command, |
| 472 |
* and data_out coming from the SCSI controller device. This function |
| 473 |
* interprets the command, and (if necessary) creates responses in |
| 474 |
* data_in, msg_in, and status. |
| 475 |
* |
| 476 |
* Returns: |
| 477 |
* 2 if the command expects data from the DATA_OUT phase, |
| 478 |
* 1 if otherwise ok, |
| 479 |
* 0 on error. |
| 480 |
*/ |
| 481 |
int diskimage_scsicommand(struct cpu *cpu, int id, int type, |
| 482 |
struct scsi_transfer *xferp) |
| 483 |
{ |
| 484 |
char namebuf[16]; |
| 485 |
int retlen, i, q; |
| 486 |
uint64_t size; |
| 487 |
int64_t ofs; |
| 488 |
int pagecode; |
| 489 |
struct machine *machine = cpu->machine; |
| 490 |
struct diskimage *d; |
| 491 |
|
| 492 |
if (machine == NULL) { |
| 493 |
fatal("[ diskimage_scsicommand(): machine == NULL ]\n"); |
| 494 |
return 0; |
| 495 |
} |
| 496 |
|
| 497 |
d = machine->first_diskimage; |
| 498 |
while (d != NULL) { |
| 499 |
if (d->type == type && d->id == id) |
| 500 |
break; |
| 501 |
d = d->next; |
| 502 |
} |
| 503 |
if (d == NULL) { |
| 504 |
fprintf(stderr, "[ diskimage_scsicommand(): %s " |
| 505 |
" id %i not connected? ]\n", diskimage_types[type], id); |
| 506 |
} |
| 507 |
|
| 508 |
if (xferp->cmd == NULL) { |
| 509 |
fatal("[ diskimage_scsicommand(): cmd == NULL ]\n"); |
| 510 |
return 0; |
| 511 |
} |
| 512 |
|
| 513 |
if (xferp->cmd_len < 1) { |
| 514 |
fatal("[ diskimage_scsicommand(): cmd_len == %i ]\n", |
| 515 |
xferp->cmd_len); |
| 516 |
return 0; |
| 517 |
} |
| 518 |
|
| 519 |
debug("[ diskimage_scsicommand(id=%i) cmd=0x%02x: ", |
| 520 |
id, xferp->cmd[0]); |
| 521 |
|
| 522 |
#if 0 |
| 523 |
fatal("[ diskimage_scsicommand(id=%i) cmd=0x%02x len=%i:", |
| 524 |
id, xferp->cmd[0], xferp->cmd_len); |
| 525 |
for (i=0; i<xferp->cmd_len; i++) |
| 526 |
fatal(" %02x", xferp->cmd[i]); |
| 527 |
fatal("\n"); |
| 528 |
if (xferp->cmd_len > 7 && xferp->cmd[5] == 0x11) |
| 529 |
single_step = ENTER_SINGLE_STEPPING; |
| 530 |
#endif |
| 531 |
|
| 532 |
#if 0 |
| 533 |
{ |
| 534 |
static FILE *f = NULL; |
| 535 |
if (f == NULL) |
| 536 |
f = fopen("scsi_log.txt", "w"); |
| 537 |
if (f != NULL) { |
| 538 |
int i; |
| 539 |
fprintf(f, "id=%i cmd =", id); |
| 540 |
for (i=0; i<xferp->cmd_len; i++) |
| 541 |
fprintf(f, " %02x", xferp->cmd[i]); |
| 542 |
fprintf(f, "\n"); |
| 543 |
fflush(f); |
| 544 |
} |
| 545 |
} |
| 546 |
#endif |
| 547 |
|
| 548 |
switch (xferp->cmd[0]) { |
| 549 |
|
| 550 |
case SCSICMD_TEST_UNIT_READY: |
| 551 |
debug("TEST_UNIT_READY"); |
| 552 |
if (xferp->cmd_len != 6) |
| 553 |
debug(" (weird len=%i)", xferp->cmd_len); |
| 554 |
|
| 555 |
/* TODO: bits 765 of buf[1] contains the LUN */ |
| 556 |
if (xferp->cmd[1] != 0x00) |
| 557 |
fatal("WARNING: TEST_UNIT_READY with cmd[1]=0x%02x" |
| 558 |
" not yet implemented\n", (int)xferp->cmd[1]); |
| 559 |
|
| 560 |
diskimage__return_default_status_and_message(xferp); |
| 561 |
break; |
| 562 |
|
| 563 |
case SCSICMD_INQUIRY: |
| 564 |
debug("INQUIRY"); |
| 565 |
if (xferp->cmd_len != 6) |
| 566 |
debug(" (weird len=%i)", xferp->cmd_len); |
| 567 |
if (xferp->cmd[1] != 0x00) { |
| 568 |
debug("WARNING: INQUIRY with cmd[1]=0x%02x not yet " |
| 569 |
"implemented\n", (int)xferp->cmd[1]); |
| 570 |
|
| 571 |
break; |
| 572 |
} |
| 573 |
|
| 574 |
/* Return values: */ |
| 575 |
retlen = xferp->cmd[4]; |
| 576 |
if (retlen < 36) { |
| 577 |
fatal("WARNING: SCSI inquiry len=%i, <36!\n", retlen); |
| 578 |
retlen = 36; |
| 579 |
} |
| 580 |
|
| 581 |
/* Return data: */ |
| 582 |
scsi_transfer_allocbuf(&xferp->data_in_len, &xferp->data_in, |
| 583 |
retlen, 1); |
| 584 |
xferp->data_in[0] = 0x00; /* 0x00 = Direct-access disk */ |
| 585 |
xferp->data_in[1] = 0x00; /* 0x00 = non-removable */ |
| 586 |
xferp->data_in[2] = 0x02; /* SCSI-2 */ |
| 587 |
#if 0 |
| 588 |
xferp->data_in[3] = 0x02; /* Response data format = SCSI-2 */ |
| 589 |
#endif |
| 590 |
xferp->data_in[4] = retlen - 4; /* Additional length */ |
| 591 |
xferp->data_in[4] = 0x2c - 4; /* Additional length */ |
| 592 |
xferp->data_in[6] = 0x04; /* ACKREQQ */ |
| 593 |
xferp->data_in[7] = 0x60; /* WBus32, WBus16 */ |
| 594 |
|
| 595 |
/* These are padded with spaces: */ |
| 596 |
|
| 597 |
memcpy(xferp->data_in+8, "GXemul ", 8); |
| 598 |
if (diskimage_getname(cpu->machine, id, |
| 599 |
type, namebuf, sizeof(namebuf))) { |
| 600 |
size_t i; |
| 601 |
for (i=0; i<sizeof(namebuf); i++) |
| 602 |
if (namebuf[i] == 0) { |
| 603 |
for (; i<sizeof(namebuf); i++) |
| 604 |
namebuf[i] = ' '; |
| 605 |
break; |
| 606 |
} |
| 607 |
memcpy(xferp->data_in+16, namebuf, 16); |
| 608 |
} else |
| 609 |
memcpy(xferp->data_in+16, "DISK ", 16); |
| 610 |
memcpy(xferp->data_in+32, "0 ", 4); |
| 611 |
|
| 612 |
/* |
| 613 |
* Some Ultrix kernels want specific responses from |
| 614 |
* the drives. |
| 615 |
*/ |
| 616 |
|
| 617 |
if (machine->machine_type == MACHINE_PMAX) { |
| 618 |
/* DEC, RZ25 (rev 0900) = 832527 sectors */ |
| 619 |
/* DEC, RZ58 (rev 2000) = 2698061 sectors */ |
| 620 |
memcpy(xferp->data_in+8, "DEC ", 8); |
| 621 |
memcpy(xferp->data_in+16, "RZ58 (C) DEC", 16); |
| 622 |
memcpy(xferp->data_in+32, "2000", 4); |
| 623 |
} |
| 624 |
|
| 625 |
/* Some data is different for CD-ROM drives: */ |
| 626 |
if (d->is_a_cdrom) { |
| 627 |
xferp->data_in[0] = 0x05; /* 0x05 = CD-ROM */ |
| 628 |
xferp->data_in[1] = 0x80; /* 0x80 = removable */ |
| 629 |
/* memcpy(xferp->data_in+16, "CD-ROM ", 16);*/ |
| 630 |
|
| 631 |
if (machine->machine_type == MACHINE_PMAX) { |
| 632 |
/* SONY, CD-ROM: */ |
| 633 |
memcpy(xferp->data_in+8, "SONY ", 8); |
| 634 |
memcpy(xferp->data_in+16, |
| 635 |
"CD-ROM ", 16); |
| 636 |
|
| 637 |
/* ... or perhaps this: */ |
| 638 |
memcpy(xferp->data_in+8, "DEC ", 8); |
| 639 |
memcpy(xferp->data_in+16, |
| 640 |
"RRD42 (C) DEC ", 16); |
| 641 |
memcpy(xferp->data_in+32, "4.5d", 4); |
| 642 |
} else if (machine->machine_type == MACHINE_ARC) { |
| 643 |
/* NEC, CD-ROM: */ |
| 644 |
memcpy(xferp->data_in+8, "NEC ", 8); |
| 645 |
memcpy(xferp->data_in+16, |
| 646 |
"CD-ROM CDR-210P ", 16); |
| 647 |
memcpy(xferp->data_in+32, "1.0 ", 4); |
| 648 |
} |
| 649 |
} |
| 650 |
|
| 651 |
/* Data for tape devices: */ |
| 652 |
if (d->is_a_tape) { |
| 653 |
xferp->data_in[0] = 0x01; /* 0x01 = tape */ |
| 654 |
xferp->data_in[1] = 0x80; /* 0x80 = removable */ |
| 655 |
memcpy(xferp->data_in+16, "TAPE ", 16); |
| 656 |
|
| 657 |
if (machine->machine_type == MACHINE_PMAX) { |
| 658 |
/* |
| 659 |
* TODO: find out if these are correct. |
| 660 |
* |
| 661 |
* The name might be TZK10, TSZ07, or TLZ04, |
| 662 |
* or something completely different. |
| 663 |
*/ |
| 664 |
memcpy(xferp->data_in+8, "DEC ", 8); |
| 665 |
memcpy(xferp->data_in+16, |
| 666 |
"TK50 (C) DEC", 16); |
| 667 |
memcpy(xferp->data_in+32, "2000", 4); |
| 668 |
} |
| 669 |
} |
| 670 |
|
| 671 |
diskimage__return_default_status_and_message(xferp); |
| 672 |
break; |
| 673 |
|
| 674 |
case SCSIBLOCKCMD_READ_CAPACITY: |
| 675 |
debug("READ_CAPACITY"); |
| 676 |
|
| 677 |
if (xferp->cmd_len != 10) |
| 678 |
fatal(" [ weird READ_CAPACITY len=%i, should be 10 ] ", |
| 679 |
xferp->cmd_len); |
| 680 |
else { |
| 681 |
if (xferp->cmd[8] & 1) { |
| 682 |
/* Partial Medium Indicator bit... TODO */ |
| 683 |
fatal("WARNING: READ_CAPACITY with PMI bit" |
| 684 |
" set not yet implemented\n"); |
| 685 |
} |
| 686 |
} |
| 687 |
|
| 688 |
/* Return data: */ |
| 689 |
scsi_transfer_allocbuf(&xferp->data_in_len, &xferp->data_in, |
| 690 |
8, 1); |
| 691 |
|
| 692 |
diskimage_recalc_size(d); |
| 693 |
|
| 694 |
size = d->total_size / d->logical_block_size; |
| 695 |
if (d->total_size & (d->logical_block_size-1)) |
| 696 |
size ++; |
| 697 |
|
| 698 |
xferp->data_in[0] = (size >> 24) & 255; |
| 699 |
xferp->data_in[1] = (size >> 16) & 255; |
| 700 |
xferp->data_in[2] = (size >> 8) & 255; |
| 701 |
xferp->data_in[3] = size & 255; |
| 702 |
|
| 703 |
xferp->data_in[4] = (d->logical_block_size >> 24) & 255; |
| 704 |
xferp->data_in[5] = (d->logical_block_size >> 16) & 255; |
| 705 |
xferp->data_in[6] = (d->logical_block_size >> 8) & 255; |
| 706 |
xferp->data_in[7] = d->logical_block_size & 255; |
| 707 |
|
| 708 |
diskimage__return_default_status_and_message(xferp); |
| 709 |
break; |
| 710 |
|
| 711 |
case SCSICMD_MODE_SENSE: |
| 712 |
case SCSICMD_MODE_SENSE10: |
| 713 |
debug("MODE_SENSE"); |
| 714 |
q = 4; retlen = xferp->cmd[4]; |
| 715 |
switch (xferp->cmd_len) { |
| 716 |
case 6: break; |
| 717 |
case 10:q = 8; |
| 718 |
retlen = xferp->cmd[7] * 256 + xferp->cmd[8]; |
| 719 |
break; |
| 720 |
default:fatal(" (unimplemented mode_sense len=%i)", |
| 721 |
xferp->cmd_len); |
| 722 |
} |
| 723 |
|
| 724 |
/* |
| 725 |
* NOTE/TODO: This code doesn't handle too short retlens |
| 726 |
* very well. A quick hack around this is that I allocate |
| 727 |
* a bit too much memory, so that nothing is actually |
| 728 |
* written outside of xferp->data_in[]. |
| 729 |
*/ |
| 730 |
|
| 731 |
retlen += 100; /* Should be enough. (Ugly.) */ |
| 732 |
|
| 733 |
if ((xferp->cmd[2] & 0xc0) != 0) |
| 734 |
fatal("WARNING: mode sense, cmd[2] = 0x%02x\n", |
| 735 |
xferp->cmd[2]); |
| 736 |
|
| 737 |
/* Return data: */ |
| 738 |
scsi_transfer_allocbuf(&xferp->data_in_len, |
| 739 |
&xferp->data_in, retlen, 1); |
| 740 |
|
| 741 |
xferp->data_in_len -= 100; /* Restore size. */ |
| 742 |
|
| 743 |
pagecode = xferp->cmd[2] & 0x3f; |
| 744 |
|
| 745 |
debug("[ MODE SENSE id %i, pagecode=%i ]\n", id, pagecode); |
| 746 |
|
| 747 |
/* 4 bytes of header for 6-byte command, |
| 748 |
8 bytes of header for 10-byte command. */ |
| 749 |
xferp->data_in[0] = retlen; /* 0: mode data length */ |
| 750 |
xferp->data_in[1] = d->is_a_cdrom? 0x05 : 0x00; |
| 751 |
/* 1: medium type */ |
| 752 |
xferp->data_in[2] = 0x00; /* device specific |
| 753 |
parameter */ |
| 754 |
xferp->data_in[3] = 8 * 1; /* block descriptor |
| 755 |
length: 1 page (?) */ |
| 756 |
|
| 757 |
xferp->data_in[q+0] = 0x00; /* density code */ |
| 758 |
xferp->data_in[q+1] = 0; /* nr of blocks, high */ |
| 759 |
xferp->data_in[q+2] = 0; /* nr of blocks, mid */ |
| 760 |
xferp->data_in[q+3] = 0; /* nr of blocks, low */ |
| 761 |
xferp->data_in[q+4] = 0x00; /* reserved */ |
| 762 |
xferp->data_in[q+5] = (d->logical_block_size >> 16) & 255; |
| 763 |
xferp->data_in[q+6] = (d->logical_block_size >> 8) & 255; |
| 764 |
xferp->data_in[q+7] = d->logical_block_size & 255; |
| 765 |
q += 8; |
| 766 |
|
| 767 |
diskimage__return_default_status_and_message(xferp); |
| 768 |
|
| 769 |
/* descriptors, 8 bytes (each) */ |
| 770 |
|
| 771 |
/* page, n bytes (each) */ |
| 772 |
switch (pagecode) { |
| 773 |
case 0: |
| 774 |
/* TODO: Nothing here? */ |
| 775 |
break; |
| 776 |
case 1: /* read-write error recovery page */ |
| 777 |
xferp->data_in[q + 0] = pagecode; |
| 778 |
xferp->data_in[q + 1] = 10; |
| 779 |
break; |
| 780 |
case 3: /* format device page */ |
| 781 |
xferp->data_in[q + 0] = pagecode; |
| 782 |
xferp->data_in[q + 1] = 22; |
| 783 |
|
| 784 |
/* 10,11 = sectors per track */ |
| 785 |
xferp->data_in[q + 10] = 0; |
| 786 |
xferp->data_in[q + 11] = d->sectors_per_track; |
| 787 |
|
| 788 |
/* 12,13 = physical sector size */ |
| 789 |
xferp->data_in[q + 12] = |
| 790 |
(d->logical_block_size >> 8) & 255; |
| 791 |
xferp->data_in[q + 13] = d->logical_block_size & 255; |
| 792 |
break; |
| 793 |
case 4: /* rigid disk geometry page */ |
| 794 |
xferp->data_in[q + 0] = pagecode; |
| 795 |
xferp->data_in[q + 1] = 22; |
| 796 |
xferp->data_in[q + 2] = (d->ncyls >> 16) & 255; |
| 797 |
xferp->data_in[q + 3] = (d->ncyls >> 8) & 255; |
| 798 |
xferp->data_in[q + 4] = d->ncyls & 255; |
| 799 |
xferp->data_in[q + 5] = d->heads; |
| 800 |
|
| 801 |
xferp->data_in[q + 20] = (d->rpms >> 8) & 255; |
| 802 |
xferp->data_in[q + 21] = d->rpms & 255; |
| 803 |
break; |
| 804 |
case 5: /* flexible disk page */ |
| 805 |
xferp->data_in[q + 0] = pagecode; |
| 806 |
xferp->data_in[q + 1] = 0x1e; |
| 807 |
|
| 808 |
/* 2,3 = transfer rate */ |
| 809 |
xferp->data_in[q + 2] = ((5000) >> 8) & 255; |
| 810 |
xferp->data_in[q + 3] = (5000) & 255; |
| 811 |
|
| 812 |
xferp->data_in[q + 4] = d->heads; |
| 813 |
xferp->data_in[q + 5] = d->sectors_per_track; |
| 814 |
|
| 815 |
/* 6,7 = data bytes per sector */ |
| 816 |
xferp->data_in[q + 6] = (d->logical_block_size >> 8) |
| 817 |
& 255; |
| 818 |
xferp->data_in[q + 7] = d->logical_block_size & 255; |
| 819 |
|
| 820 |
xferp->data_in[q + 8] = (d->ncyls >> 8) & 255; |
| 821 |
xferp->data_in[q + 9] = d->ncyls & 255; |
| 822 |
|
| 823 |
xferp->data_in[q + 28] = (d->rpms >> 8) & 255; |
| 824 |
xferp->data_in[q + 29] = d->rpms & 255; |
| 825 |
break; |
| 826 |
default: |
| 827 |
fatal("[ MODE_SENSE for page %i is not yet " |
| 828 |
"implemented! ]\n", pagecode); |
| 829 |
} |
| 830 |
|
| 831 |
break; |
| 832 |
|
| 833 |
case SCSICMD_READ: |
| 834 |
case SCSICMD_READ_10: |
| 835 |
debug("READ"); |
| 836 |
|
| 837 |
/* |
| 838 |
* For tape devices, read data at the current position. |
| 839 |
* For disk and CDROM devices, the command bytes contain |
| 840 |
* an offset telling us where to read from the device. |
| 841 |
*/ |
| 842 |
|
| 843 |
if (d->is_a_tape) { |
| 844 |
/* bits 7..5 of cmd[1] are the LUN bits... TODO */ |
| 845 |
|
| 846 |
size = (xferp->cmd[2] << 16) + |
| 847 |
(xferp->cmd[3] << 8) + |
| 848 |
xferp->cmd[4]; |
| 849 |
|
| 850 |
/* Bit 1 of cmd[1] is the SILI bit (TODO), and |
| 851 |
bit 0 is the "use fixed length" bit. */ |
| 852 |
|
| 853 |
if (xferp->cmd[1] & 0x01) { |
| 854 |
/* Fixed block length: */ |
| 855 |
size *= d->logical_block_size; |
| 856 |
} |
| 857 |
|
| 858 |
if (d->filemark) { |
| 859 |
/* At end of file, switch to the next |
| 860 |
automagically: */ |
| 861 |
d->tape_filenr ++; |
| 862 |
diskimage__switch_tape(d); |
| 863 |
|
| 864 |
d->filemark = 0; |
| 865 |
} |
| 866 |
|
| 867 |
ofs = d->tape_offset; |
| 868 |
|
| 869 |
fatal("[ READ tape, id=%i file=%i, cmd[1]=%02x size=%i" |
| 870 |
", ofs=%lli ]\n", id, d->tape_filenr, |
| 871 |
xferp->cmd[1], (int)size, (long long)ofs); |
| 872 |
} else { |
| 873 |
if (xferp->cmd[0] == SCSICMD_READ) { |
| 874 |
if (xferp->cmd_len != 6) |
| 875 |
debug(" (weird len=%i)", |
| 876 |
xferp->cmd_len); |
| 877 |
|
| 878 |
/* |
| 879 |
* bits 4..0 of cmd[1], and cmd[2] and cmd[3] |
| 880 |
* hold the logical block address. |
| 881 |
* |
| 882 |
* cmd[4] holds the number of logical blocks |
| 883 |
* to transfer. (Special case if the value is |
| 884 |
* 0, actually means 256.) |
| 885 |
*/ |
| 886 |
ofs = ((xferp->cmd[1] & 0x1f) << 16) + |
| 887 |
(xferp->cmd[2] << 8) + xferp->cmd[3]; |
| 888 |
retlen = xferp->cmd[4]; |
| 889 |
if (retlen == 0) |
| 890 |
retlen = 256; |
| 891 |
} else { |
| 892 |
if (xferp->cmd_len != 10) |
| 893 |
debug(" (weird len=%i)", |
| 894 |
xferp->cmd_len); |
| 895 |
|
| 896 |
/* |
| 897 |
* cmd[2..5] hold the logical block address. |
| 898 |
* cmd[7..8] holds the number of logical |
| 899 |
* blocks to transfer. (NOTE: If the value is |
| 900 |
* 0, this means 0, not 65536. :-) |
| 901 |
*/ |
| 902 |
ofs = ((uint64_t)xferp->cmd[2] << 24) + |
| 903 |
(xferp->cmd[3] << 16) + (xferp->cmd[4] << 8) |
| 904 |
+ xferp->cmd[5]; |
| 905 |
retlen = (xferp->cmd[7] << 8) + xferp->cmd[8]; |
| 906 |
} |
| 907 |
|
| 908 |
size = retlen * d->logical_block_size; |
| 909 |
ofs *= d->logical_block_size; |
| 910 |
} |
| 911 |
|
| 912 |
/* Return data: */ |
| 913 |
scsi_transfer_allocbuf(&xferp->data_in_len, &xferp->data_in, |
| 914 |
size, 0); |
| 915 |
|
| 916 |
debug(" READ ofs=%lli size=%i\n", (long long)ofs, (int)size); |
| 917 |
|
| 918 |
diskimage__return_default_status_and_message(xferp); |
| 919 |
|
| 920 |
d->filemark = 0; |
| 921 |
|
| 922 |
/* |
| 923 |
* Failure? Then set check condition. |
| 924 |
* For tapes, error should only occur at the end of a file. |
| 925 |
* |
| 926 |
* "If the logical unit encounters a filemark during |
| 927 |
* a READ command, CHECK CONDITION status shall be |
| 928 |
* returned and the filemark and valid bits shall be |
| 929 |
* set to one in the sense data. The sense key shall |
| 930 |
* be set to NO SENSE".. |
| 931 |
*/ |
| 932 |
if (d->is_a_tape && d->f != NULL && feof(d->f)) { |
| 933 |
debug(" feof id=%i\n", id); |
| 934 |
xferp->status[0] = 0x02; /* CHECK CONDITION */ |
| 935 |
|
| 936 |
d->filemark = 1; |
| 937 |
} else |
| 938 |
diskimage__internal_access(d, 0, ofs, |
| 939 |
xferp->data_in, size); |
| 940 |
|
| 941 |
if (d->is_a_tape && d->f != NULL) |
| 942 |
d->tape_offset = ftello(d->f); |
| 943 |
|
| 944 |
/* TODO: other errors? */ |
| 945 |
break; |
| 946 |
|
| 947 |
case SCSICMD_WRITE: |
| 948 |
case SCSICMD_WRITE_10: |
| 949 |
debug("WRITE"); |
| 950 |
|
| 951 |
/* TODO: tape */ |
| 952 |
|
| 953 |
if (xferp->cmd[0] == SCSICMD_WRITE) { |
| 954 |
if (xferp->cmd_len != 6) |
| 955 |
debug(" (weird len=%i)", xferp->cmd_len); |
| 956 |
|
| 957 |
/* |
| 958 |
* bits 4..0 of cmd[1], and cmd[2] and cmd[3] hold the |
| 959 |
* logical block address. |
| 960 |
* |
| 961 |
* cmd[4] holds the number of logical blocks to |
| 962 |
* transfer. (Special case if the value is 0, actually |
| 963 |
* means 256.) |
| 964 |
*/ |
| 965 |
ofs = ((xferp->cmd[1] & 0x1f) << 16) + |
| 966 |
(xferp->cmd[2] << 8) + xferp->cmd[3]; |
| 967 |
retlen = xferp->cmd[4]; |
| 968 |
if (retlen == 0) |
| 969 |
retlen = 256; |
| 970 |
} else { |
| 971 |
if (xferp->cmd_len != 10) |
| 972 |
debug(" (weird len=%i)", xferp->cmd_len); |
| 973 |
|
| 974 |
/* |
| 975 |
* cmd[2..5] hold the logical block address. |
| 976 |
* cmd[7..8] holds the number of logical blocks to |
| 977 |
* transfer. (NOTE: If the value is 0 this means 0, |
| 978 |
* not 65536.) |
| 979 |
*/ |
| 980 |
ofs = ((uint64_t)xferp->cmd[2] << 24) + |
| 981 |
(xferp->cmd[3] << 16) + (xferp->cmd[4] << 8) + |
| 982 |
xferp->cmd[5]; |
| 983 |
retlen = (xferp->cmd[7] << 8) + xferp->cmd[8]; |
| 984 |
} |
| 985 |
|
| 986 |
size = retlen * d->logical_block_size; |
| 987 |
ofs *= d->logical_block_size; |
| 988 |
|
| 989 |
if (xferp->data_out_offset != size) { |
| 990 |
debug(", data_out == NULL, wanting %i bytes, \n\n", |
| 991 |
(int)size); |
| 992 |
xferp->data_out_len = size; |
| 993 |
return 2; |
| 994 |
} |
| 995 |
|
| 996 |
debug(", data_out != NULL, OK :-)"); |
| 997 |
|
| 998 |
debug("WRITE ofs=%i size=%i offset=%i\n", (int)ofs, |
| 999 |
(int)size, (int)xferp->data_out_offset); |
| 1000 |
|
| 1001 |
diskimage__internal_access(d, 1, ofs, |
| 1002 |
xferp->data_out, size); |
| 1003 |
|
| 1004 |
/* TODO: how about return code? */ |
| 1005 |
|
| 1006 |
/* Is this really necessary? */ |
| 1007 |
/* fsync(fileno(d->f)); */ |
| 1008 |
|
| 1009 |
diskimage__return_default_status_and_message(xferp); |
| 1010 |
break; |
| 1011 |
|
| 1012 |
case SCSICMD_SYNCHRONIZE_CACHE: |
| 1013 |
debug("SYNCHRONIZE_CACHE"); |
| 1014 |
|
| 1015 |
if (xferp->cmd_len != 10) |
| 1016 |
debug(" (weird len=%i)", xferp->cmd_len); |
| 1017 |
|
| 1018 |
/* TODO: actualy care about cmd[] */ |
| 1019 |
fsync(fileno(d->f)); |
| 1020 |
|
| 1021 |
diskimage__return_default_status_and_message(xferp); |
| 1022 |
break; |
| 1023 |
|
| 1024 |
case SCSICMD_START_STOP_UNIT: |
| 1025 |
debug("START_STOP_UNIT"); |
| 1026 |
|
| 1027 |
if (xferp->cmd_len != 6) |
| 1028 |
debug(" (weird len=%i)", xferp->cmd_len); |
| 1029 |
|
| 1030 |
for (i=0; i<(ssize_t)xferp->cmd_len; i++) |
| 1031 |
debug(" %02x", xferp->cmd[i]); |
| 1032 |
|
| 1033 |
/* TODO: actualy care about cmd[] */ |
| 1034 |
|
| 1035 |
diskimage__return_default_status_and_message(xferp); |
| 1036 |
break; |
| 1037 |
|
| 1038 |
case SCSICMD_REQUEST_SENSE: |
| 1039 |
debug("REQUEST_SENSE"); |
| 1040 |
|
| 1041 |
retlen = xferp->cmd[4]; |
| 1042 |
|
| 1043 |
/* TODO: bits 765 of buf[1] contains the LUN */ |
| 1044 |
if (xferp->cmd[1] != 0x00) |
| 1045 |
fatal("WARNING: REQUEST_SENSE with cmd[1]=0x%02x not" |
| 1046 |
" yet implemented\n", (int)xferp->cmd[1]); |
| 1047 |
|
| 1048 |
if (retlen < 18) { |
| 1049 |
fatal("WARNING: SCSI request sense len=%i, <18!\n", |
| 1050 |
(int)retlen); |
| 1051 |
retlen = 18; |
| 1052 |
} |
| 1053 |
|
| 1054 |
/* Return data: */ |
| 1055 |
scsi_transfer_allocbuf(&xferp->data_in_len, &xferp->data_in, |
| 1056 |
retlen, 1); |
| 1057 |
|
| 1058 |
xferp->data_in[0] = 0x80 + 0x70;/* 0x80 = valid, |
| 1059 |
0x70 = "current errors" */ |
| 1060 |
xferp->data_in[2] = 0x00; /* SENSE KEY! */ |
| 1061 |
|
| 1062 |
if (d->filemark) { |
| 1063 |
xferp->data_in[2] = 0x80; |
| 1064 |
} |
| 1065 |
debug(": [2]=0x%02x ", xferp->data_in[2]); |
| 1066 |
|
| 1067 |
printf(" XXX(!) \n"); |
| 1068 |
|
| 1069 |
/* TODO */ |
| 1070 |
xferp->data_in[7] = retlen - 7; /* additional sense length */ |
| 1071 |
/* TODO */ |
| 1072 |
|
| 1073 |
diskimage__return_default_status_and_message(xferp); |
| 1074 |
break; |
| 1075 |
|
| 1076 |
case SCSICMD_READ_BLOCK_LIMITS: |
| 1077 |
debug("READ_BLOCK_LIMITS"); |
| 1078 |
|
| 1079 |
retlen = 6; |
| 1080 |
|
| 1081 |
/* TODO: bits 765 of buf[1] contains the LUN */ |
| 1082 |
if (xferp->cmd[1] != 0x00) |
| 1083 |
fatal("WARNING: READ_BLOCK_LIMITS with cmd[1]=" |
| 1084 |
"0x%02x not yet implemented\n", (int)xferp->cmd[1]); |
| 1085 |
|
| 1086 |
/* Return data: */ |
| 1087 |
scsi_transfer_allocbuf(&xferp->data_in_len, &xferp->data_in, |
| 1088 |
retlen, 1); |
| 1089 |
|
| 1090 |
/* |
| 1091 |
* data[0] is reserved, data[1..3] contain the maximum block |
| 1092 |
* length limit, data[4..5] contain the minimum limit. |
| 1093 |
*/ |
| 1094 |
|
| 1095 |
{ |
| 1096 |
int max_limit = 32768; |
| 1097 |
int min_limit = 128; |
| 1098 |
|
| 1099 |
xferp->data_in[1] = (max_limit >> 16) & 255; |
| 1100 |
xferp->data_in[2] = (max_limit >> 8) & 255; |
| 1101 |
xferp->data_in[3] = max_limit & 255; |
| 1102 |
xferp->data_in[4] = (min_limit >> 8) & 255; |
| 1103 |
xferp->data_in[5] = min_limit & 255; |
| 1104 |
} |
| 1105 |
|
| 1106 |
diskimage__return_default_status_and_message(xferp); |
| 1107 |
break; |
| 1108 |
|
| 1109 |
case SCSICMD_REWIND: |
| 1110 |
debug("REWIND"); |
| 1111 |
|
| 1112 |
/* TODO: bits 765 of buf[1] contains the LUN */ |
| 1113 |
if ((xferp->cmd[1] & 0xe0) != 0x00) |
| 1114 |
fatal("WARNING: REWIND with cmd[1]=0x%02x not yet " |
| 1115 |
"implemented\n", (int)xferp->cmd[1]); |
| 1116 |
|
| 1117 |
/* Close and reopen. */ |
| 1118 |
|
| 1119 |
if (d->f != NULL) |
| 1120 |
fclose(d->f); |
| 1121 |
|
| 1122 |
d->f = fopen(d->fname, d->writable? "r+" : "r"); |
| 1123 |
if (d->f == NULL) { |
| 1124 |
fprintf(stderr, "[ diskimage: could not (re)open " |
| 1125 |
"'%s' ]\n", d->fname); |
| 1126 |
/* TODO: return error */ |
| 1127 |
} |
| 1128 |
|
| 1129 |
d->tape_offset = 0; |
| 1130 |
d->tape_filenr = 0; |
| 1131 |
d->filemark = 0; |
| 1132 |
|
| 1133 |
diskimage__return_default_status_and_message(xferp); |
| 1134 |
break; |
| 1135 |
|
| 1136 |
case SCSICMD_SPACE: |
| 1137 |
debug("SPACE"); |
| 1138 |
|
| 1139 |
/* TODO: bits 765 of buf[1] contains the LUN */ |
| 1140 |
if ((xferp->cmd[1] & 0xe0) != 0x00) |
| 1141 |
fatal("WARNING: SPACE with cmd[1]=0x%02x not yet " |
| 1142 |
"implemented\n", (int)xferp->cmd[1]); |
| 1143 |
|
| 1144 |
/* |
| 1145 |
* Bits 2..0 of buf[1] contain the 'code' which describes how |
| 1146 |
* spacing should be done, and buf[2..4] contain the number of |
| 1147 |
* operations. |
| 1148 |
*/ |
| 1149 |
debug("[ SPACE: buf[] = %02x %02x %02x %02x %02x %02x ]\n", |
| 1150 |
xferp->cmd[0], |
| 1151 |
xferp->cmd[1], |
| 1152 |
xferp->cmd[2], |
| 1153 |
xferp->cmd[3], |
| 1154 |
xferp->cmd[4], |
| 1155 |
xferp->cmd[5]); |
| 1156 |
|
| 1157 |
switch (xferp->cmd[1] & 7) { |
| 1158 |
case 1: /* Seek to a different file nr: */ |
| 1159 |
{ |
| 1160 |
int diff = (xferp->cmd[2] << 16) + |
| 1161 |
(xferp->cmd[3] << 8) + xferp->cmd[4]; |
| 1162 |
|
| 1163 |
/* Negative seek offset: */ |
| 1164 |
if (diff & (1 << 23)) |
| 1165 |
diff = - (16777216 - diff); |
| 1166 |
|
| 1167 |
d->tape_filenr += diff; |
| 1168 |
} |
| 1169 |
|
| 1170 |
/* At end of file, switch to the next tape file: */ |
| 1171 |
if (d->filemark) { |
| 1172 |
d->tape_filenr ++; |
| 1173 |
d->filemark = 0; |
| 1174 |
} |
| 1175 |
|
| 1176 |
debug("{ switching to tape file %i }", d->tape_filenr); |
| 1177 |
diskimage__switch_tape(d); |
| 1178 |
d->filemark = 0; |
| 1179 |
break; |
| 1180 |
default: |
| 1181 |
fatal("[ diskimage.c: unimplemented SPACE type %i ]\n", |
| 1182 |
xferp->cmd[1] & 7); |
| 1183 |
} |
| 1184 |
|
| 1185 |
diskimage__return_default_status_and_message(xferp); |
| 1186 |
break; |
| 1187 |
|
| 1188 |
case SCSICDROM_READ_SUBCHANNEL: |
| 1189 |
/* |
| 1190 |
* According to |
| 1191 |
* http://mail-index.netbsd.org/port-i386/1997/03/03/0010.html: |
| 1192 |
* |
| 1193 |
* "The READ_CD_CAPACITY, READ_SUBCHANNEL, and MODE_SELECT |
| 1194 |
* commands have the same opcode in SCSI or ATAPI, but don't |
| 1195 |
* have the same command structure"... |
| 1196 |
* |
| 1197 |
* TODO: This still doesn't work. Hm. |
| 1198 |
*/ |
| 1199 |
retlen = 48; |
| 1200 |
|
| 1201 |
debug("CDROM_READ_SUBCHANNEL/READ_CD_CAPACITY, cmd[1]=0x%02x", |
| 1202 |
xferp->cmd[1]); |
| 1203 |
|
| 1204 |
/* Return data: */ |
| 1205 |
scsi_transfer_allocbuf(&xferp->data_in_len, |
| 1206 |
&xferp->data_in, retlen, 1); |
| 1207 |
|
| 1208 |
diskimage_recalc_size(d); |
| 1209 |
|
| 1210 |
size = d->total_size / d->logical_block_size; |
| 1211 |
if (d->total_size & (d->logical_block_size-1)) |
| 1212 |
size ++; |
| 1213 |
|
| 1214 |
xferp->data_in[0] = (size >> 24) & 255; |
| 1215 |
xferp->data_in[1] = (size >> 16) & 255; |
| 1216 |
xferp->data_in[2] = (size >> 8) & 255; |
| 1217 |
xferp->data_in[3] = size & 255; |
| 1218 |
|
| 1219 |
xferp->data_in[4] = (d->logical_block_size >> 24) & 255; |
| 1220 |
xferp->data_in[5] = (d->logical_block_size >> 16) & 255; |
| 1221 |
xferp->data_in[6] = (d->logical_block_size >> 8) & 255; |
| 1222 |
xferp->data_in[7] = d->logical_block_size & 255; |
| 1223 |
|
| 1224 |
diskimage__return_default_status_and_message(xferp); |
| 1225 |
break; |
| 1226 |
|
| 1227 |
case SCSICDROM_READ_TOC: |
| 1228 |
debug("(CDROM_READ_TOC: "); |
| 1229 |
debug("lun=%i msf=%i ", |
| 1230 |
xferp->cmd[1] >> 5, (xferp->cmd[1] >> 1) & 1); |
| 1231 |
debug("starting_track=%i ", xferp->cmd[6]); |
| 1232 |
retlen = xferp->cmd[7] * 256 + xferp->cmd[8]; |
| 1233 |
debug("allocation_len=%i)\n", retlen); |
| 1234 |
|
| 1235 |
/* Return data: */ |
| 1236 |
scsi_transfer_allocbuf(&xferp->data_in_len, |
| 1237 |
&xferp->data_in, retlen, 1); |
| 1238 |
|
| 1239 |
xferp->data_in[0] = 0; |
| 1240 |
xferp->data_in[1] = 10; |
| 1241 |
xferp->data_in[2] = 0; /* First track. */ |
| 1242 |
xferp->data_in[3] = 0; /* Last track. */ |
| 1243 |
|
| 1244 |
/* Track 0 data: */ |
| 1245 |
xferp->data_in[4] = 0x00; /* Reserved. */ |
| 1246 |
xferp->data_in[5] = 0x04; /* ADR + CTRL: |
| 1247 |
Data, not audio */ |
| 1248 |
xferp->data_in[6] = 0x00; /* Track nr */ |
| 1249 |
xferp->data_in[7] = 0x00; /* Reserved */ |
| 1250 |
/* 8..11 = absolute CDROM address */ |
| 1251 |
|
| 1252 |
diskimage__return_default_status_and_message(xferp); |
| 1253 |
break; |
| 1254 |
|
| 1255 |
case SCSICDROM_READ_DISCINFO: |
| 1256 |
debug("(SCSICDROM_READ_DISCINFO: "); |
| 1257 |
debug("TODO"); |
| 1258 |
retlen = 0; |
| 1259 |
|
| 1260 |
/* Return data: */ |
| 1261 |
scsi_transfer_allocbuf(&xferp->data_in_len, |
| 1262 |
&xferp->data_in, retlen, 1); |
| 1263 |
|
| 1264 |
/* TODO */ |
| 1265 |
|
| 1266 |
diskimage__return_default_status_and_message(xferp); |
| 1267 |
break; |
| 1268 |
|
| 1269 |
case SCSICDROM_READ_TRACKINFO: |
| 1270 |
debug("(SCSICDROM_READ_TRACKINFO: "); |
| 1271 |
debug("TODO"); |
| 1272 |
retlen = 0; |
| 1273 |
|
| 1274 |
/* Return data: */ |
| 1275 |
scsi_transfer_allocbuf(&xferp->data_in_len, |
| 1276 |
&xferp->data_in, retlen, 1); |
| 1277 |
|
| 1278 |
/* TODO */ |
| 1279 |
|
| 1280 |
diskimage__return_default_status_and_message(xferp); |
| 1281 |
break; |
| 1282 |
|
| 1283 |
case SCSICMD_MODE_SELECT: |
| 1284 |
debug("[ SCSI MODE_SELECT: "); |
| 1285 |
|
| 1286 |
/* |
| 1287 |
* TODO: |
| 1288 |
* |
| 1289 |
* This is super-hardcoded for NetBSD's usage of mode_select |
| 1290 |
* to set the size of CDROM sectors to 2048. |
| 1291 |
*/ |
| 1292 |
|
| 1293 |
if (xferp->data_out_offset == 0) { |
| 1294 |
xferp->data_out_len = 12; /* TODO */ |
| 1295 |
debug("data_out == NULL, wanting %i bytes ]\n", |
| 1296 |
(int)xferp->data_out_len); |
| 1297 |
return 2; |
| 1298 |
} |
| 1299 |
|
| 1300 |
debug("data_out!=NULL (OK), "); |
| 1301 |
|
| 1302 |
/* TODO: Care about cmd? */ |
| 1303 |
|
| 1304 |
/* Set sector size to 2048: */ |
| 1305 |
/* 00 05 00 08 00 03 ca 40 00 00 08 00 */ |
| 1306 |
if (xferp->data_out[0] == 0x00 && |
| 1307 |
xferp->data_out[1] == 0x05 && |
| 1308 |
xferp->data_out[2] == 0x00 && |
| 1309 |
xferp->data_out[3] == 0x08) { |
| 1310 |
d->logical_block_size = |
| 1311 |
(xferp->data_out[9] << 16) + |
| 1312 |
(xferp->data_out[10] << 8) + |
| 1313 |
xferp->data_out[11]; |
| 1314 |
debug("[ setting logical_block_size to %i ]\n", |
| 1315 |
d->logical_block_size); |
| 1316 |
} else { |
| 1317 |
int i; |
| 1318 |
fatal("[ unknown MODE_SELECT: cmd ="); |
| 1319 |
for (i=0; i<(ssize_t)xferp->cmd_len; i++) |
| 1320 |
fatal(" %02x", xferp->cmd[i]); |
| 1321 |
fatal(", data_out ="); |
| 1322 |
for (i=0; i<(ssize_t)xferp->data_out_len; i++) |
| 1323 |
fatal(" %02x", xferp->data_out[i]); |
| 1324 |
fatal(" ]"); |
| 1325 |
} |
| 1326 |
|
| 1327 |
debug(" ]\n"); |
| 1328 |
diskimage__return_default_status_and_message(xferp); |
| 1329 |
break; |
| 1330 |
|
| 1331 |
case SCSICMD_PREVENT_ALLOW_REMOVE: |
| 1332 |
debug("[ SCSI 0x%02x Prevent/allow medium removal: " |
| 1333 |
"TODO ]\n", xferp->cmd[0]); |
| 1334 |
|
| 1335 |
diskimage__return_default_status_and_message(xferp); |
| 1336 |
break; |
| 1337 |
|
| 1338 |
case 0xbd: |
| 1339 |
fatal("[ SCSI 0x%02x (len %i), TODO: ", xferp->cmd[0], |
| 1340 |
xferp->cmd_len); |
| 1341 |
for (i=0; i<(ssize_t)xferp->cmd_len; i++) |
| 1342 |
fatal(" %02x", xferp->cmd[i]); |
| 1343 |
fatal(" ]\n"); |
| 1344 |
|
| 1345 |
/* |
| 1346 |
* Used by Windows NT? |
| 1347 |
* |
| 1348 |
* Not documented in http://www.danbbs.dk/~dino/ |
| 1349 |
* SCSI/SCSI2-D.html. |
| 1350 |
* Google gave the answer "MECHANISM_STATUS" for ATAPI. Hm. |
| 1351 |
*/ |
| 1352 |
|
| 1353 |
if (xferp->cmd_len < 12) { |
| 1354 |
fatal("WEIRD LEN?\n"); |
| 1355 |
retlen = 8; |
| 1356 |
} else { |
| 1357 |
retlen = xferp->cmd[8] * 256 + xferp->cmd[9]; |
| 1358 |
} |
| 1359 |
|
| 1360 |
/* Return data: */ |
| 1361 |
scsi_transfer_allocbuf(&xferp->data_in_len, |
| 1362 |
&xferp->data_in, retlen, 1); |
| 1363 |
|
| 1364 |
diskimage__return_default_status_and_message(xferp); |
| 1365 |
|
| 1366 |
break; |
| 1367 |
|
| 1368 |
default: |
| 1369 |
fatal("[ UNIMPLEMENTED SCSI command 0x%02x, disk id=%i ]\n", |
| 1370 |
xferp->cmd[0], id); |
| 1371 |
exit(1); |
| 1372 |
} |
| 1373 |
debug(" ]\n"); |
| 1374 |
|
| 1375 |
return 1; |
| 1376 |
} |
| 1377 |
|
| 1378 |
|
| 1379 |
/* |
| 1380 |
* diskimage_access(): |
| 1381 |
* |
| 1382 |
* Read from or write to a disk image on a machine. |
| 1383 |
* |
| 1384 |
* Returns 1 if the access completed successfully, 0 otherwise. |
| 1385 |
*/ |
| 1386 |
int diskimage_access(struct machine *machine, int id, int type, int writeflag, |
| 1387 |
off_t offset, unsigned char *buf, size_t len) |
| 1388 |
{ |
| 1389 |
struct diskimage *d = machine->first_diskimage; |
| 1390 |
|
| 1391 |
while (d != NULL) { |
| 1392 |
if (d->type == type && d->id == id) |
| 1393 |
break; |
| 1394 |
d = d->next; |
| 1395 |
} |
| 1396 |
|
| 1397 |
if (d == NULL) { |
| 1398 |
fatal("[ diskimage_access(): ERROR: trying to access a " |
| 1399 |
"non-existant %s disk image (id %i)\n", |
| 1400 |
diskimage_types[type], id); |
| 1401 |
return 0; |
| 1402 |
} |
| 1403 |
|
| 1404 |
return diskimage__internal_access(d, writeflag, offset, buf, len); |
| 1405 |
} |
| 1406 |
|
| 1407 |
|
| 1408 |
/* |
| 1409 |
* diskimage_add(): |
| 1410 |
* |
| 1411 |
* Add a disk image. fname is the filename of the disk image. |
| 1412 |
* The filename may be prefixed with one or more modifiers, followed |
| 1413 |
* by a colon. |
| 1414 |
* |
| 1415 |
* b specifies that this is a bootable device |
| 1416 |
* c CD-ROM (instead of a normal DISK) |
| 1417 |
* d DISK (this is the default) |
| 1418 |
* f FLOPPY (instead of SCSI) |
| 1419 |
* gH;S; set geometry (H=heads, S=sectors per track, cylinders are |
| 1420 |
* automatically calculated). (This is ignored for floppies.) |
| 1421 |
* i IDE (instead of SCSI) |
| 1422 |
* r read-only (don't allow changes to the file) |
| 1423 |
* s SCSI (this is the default) |
| 1424 |
* t tape |
| 1425 |
* 0-7 force a specific SCSI ID number |
| 1426 |
* |
| 1427 |
* machine is assumed to be non-NULL. |
| 1428 |
* Returns an integer >= 0 identifying the disk image. |
| 1429 |
*/ |
| 1430 |
int diskimage_add(struct machine *machine, char *fname) |
| 1431 |
{ |
| 1432 |
struct diskimage *d, *d2; |
| 1433 |
int id = 0, override_heads=0, override_spt=0; |
| 1434 |
int64_t bytespercyl; |
| 1435 |
char *cp; |
| 1436 |
int prefix_b=0, prefix_c=0, prefix_d=0, prefix_f=0, prefix_g=0; |
| 1437 |
int prefix_i=0, prefix_r=0, prefix_s=0, prefix_t=0, prefix_id = -1; |
| 1438 |
|
| 1439 |
if (fname == NULL) { |
| 1440 |
fprintf(stderr, "diskimage_add(): NULL ptr\n"); |
| 1441 |
return 0; |
| 1442 |
} |
| 1443 |
|
| 1444 |
/* Get prefix from fname: */ |
| 1445 |
cp = strchr(fname, ':'); |
| 1446 |
if (cp != NULL) { |
| 1447 |
while (fname <= cp) { |
| 1448 |
char c = *fname++; |
| 1449 |
switch (c) { |
| 1450 |
case '0': |
| 1451 |
case '1': |
| 1452 |
case '2': |
| 1453 |
case '3': |
| 1454 |
case '4': |
| 1455 |
case '5': |
| 1456 |
case '6': |
| 1457 |
case '7': |
| 1458 |
prefix_id = c - '0'; |
| 1459 |
break; |
| 1460 |
case 'b': |
| 1461 |
prefix_b = 1; |
| 1462 |
break; |
| 1463 |
case 'c': |
| 1464 |
prefix_c = 1; |
| 1465 |
break; |
| 1466 |
case 'd': |
| 1467 |
prefix_d = 1; |
| 1468 |
break; |
| 1469 |
case 'f': |
| 1470 |
prefix_f = 1; |
| 1471 |
break; |
| 1472 |
case 'g': |
| 1473 |
prefix_g = 1; |
| 1474 |
override_heads = atoi(fname); |
| 1475 |
while (*fname != '\0' && *fname != ';') |
| 1476 |
fname ++; |
| 1477 |
if (*fname == ';') |
| 1478 |
fname ++; |
| 1479 |
override_spt = atoi(fname); |
| 1480 |
while (*fname != '\0' && *fname != ';' && |
| 1481 |
*fname != ':') |
| 1482 |
fname ++; |
| 1483 |
if (*fname == ';') |
| 1484 |
fname ++; |
| 1485 |
if (override_heads < 1 || |
| 1486 |
override_spt < 1) { |
| 1487 |
fatal("Bad geometry: heads=%i " |
| 1488 |
"spt=%i\n", override_heads, |
| 1489 |
override_spt); |
| 1490 |
exit(1); |
| 1491 |
} |
| 1492 |
break; |
| 1493 |
case 'i': |
| 1494 |
prefix_i = 1; |
| 1495 |
break; |
| 1496 |
case 'r': |
| 1497 |
prefix_r = 1; |
| 1498 |
break; |
| 1499 |
case 's': |
| 1500 |
prefix_s = 1; |
| 1501 |
break; |
| 1502 |
case 't': |
| 1503 |
prefix_t = 1; |
| 1504 |
break; |
| 1505 |
case ':': |
| 1506 |
break; |
| 1507 |
default: |
| 1508 |
fprintf(stderr, "diskimage_add(): invalid " |
| 1509 |
"prefix char '%c'\n", c); |
| 1510 |
exit(1); |
| 1511 |
} |
| 1512 |
} |
| 1513 |
} |
| 1514 |
|
| 1515 |
/* Allocate a new diskimage struct: */ |
| 1516 |
d = malloc(sizeof(struct diskimage)); |
| 1517 |
if (d == NULL) { |
| 1518 |
fprintf(stderr, "out of memory in diskimage_add()\n"); |
| 1519 |
exit(1); |
| 1520 |
} |
| 1521 |
memset(d, 0, sizeof(struct diskimage)); |
| 1522 |
|
| 1523 |
d2 = machine->first_diskimage; |
| 1524 |
if (d2 == NULL) { |
| 1525 |
machine->first_diskimage = d; |
| 1526 |
} else { |
| 1527 |
while (d2->next != NULL) |
| 1528 |
d2 = d2->next; |
| 1529 |
d2->next = d; |
| 1530 |
} |
| 1531 |
|
| 1532 |
/* Default to IDE disks... */ |
| 1533 |
d->type = DISKIMAGE_IDE; |
| 1534 |
|
| 1535 |
/* ... but some machines use SCSI by default: */ |
| 1536 |
if (machine->machine_type == MACHINE_PMAX || |
| 1537 |
machine->machine_type == MACHINE_ARC) |
| 1538 |
d->type = DISKIMAGE_SCSI; |
| 1539 |
|
| 1540 |
if (prefix_i + prefix_f + prefix_s > 1) { |
| 1541 |
fprintf(stderr, "Invalid disk image prefix(es). You can" |
| 1542 |
"only use one of i, f, and s\nfor each disk image.\n"); |
| 1543 |
exit(1); |
| 1544 |
} |
| 1545 |
|
| 1546 |
if (prefix_i) |
| 1547 |
d->type = DISKIMAGE_IDE; |
| 1548 |
if (prefix_f) |
| 1549 |
d->type = DISKIMAGE_FLOPPY; |
| 1550 |
if (prefix_s) |
| 1551 |
d->type = DISKIMAGE_SCSI; |
| 1552 |
|
| 1553 |
d->fname = strdup(fname); |
| 1554 |
if (d->fname == NULL) { |
| 1555 |
fprintf(stderr, "out of memory\n"); |
| 1556 |
exit(1); |
| 1557 |
} |
| 1558 |
|
| 1559 |
d->logical_block_size = 512; |
| 1560 |
|
| 1561 |
/* |
| 1562 |
* Is this a tape, CD-ROM or a normal disk? |
| 1563 |
* |
| 1564 |
* An intelligent guess, if no prefixes are used, would be that |
| 1565 |
* filenames ending with .iso or .cdr are CD-ROM images. |
| 1566 |
*/ |
| 1567 |
if (prefix_t) { |
| 1568 |
d->is_a_tape = 1; |
| 1569 |
} else { |
| 1570 |
if (prefix_c || |
| 1571 |
((strlen(d->fname) > 4 && |
| 1572 |
(strcasecmp(d->fname + strlen(d->fname) - 4, ".cdr") == 0 || |
| 1573 |
strcasecmp(d->fname + strlen(d->fname) - 4, ".iso") == 0)) |
| 1574 |
&& !prefix_d) |
| 1575 |
) { |
| 1576 |
d->is_a_cdrom = 1; |
| 1577 |
|
| 1578 |
/* |
| 1579 |
* This is tricky. Should I use 512 or 2048 here? |
| 1580 |
* NetBSD/pmax 1.6.2 and Ultrix likes 512 bytes |
| 1581 |
* per sector, but NetBSD 2.0_BETA suddenly ignores |
| 1582 |
* this value and uses 2048 instead. |
| 1583 |
* |
| 1584 |
* OpenBSD/arc doesn't like 2048, it requires 512 |
| 1585 |
* to work correctly. |
| 1586 |
* |
| 1587 |
* TODO |
| 1588 |
*/ |
| 1589 |
|
| 1590 |
#if 0 |
| 1591 |
if (machine->machine_type == MACHINE_PMAX) |
| 1592 |
d->logical_block_size = 512; |
| 1593 |
else |
| 1594 |
d->logical_block_size = 2048; |
| 1595 |
#endif |
| 1596 |
d->logical_block_size = 512; |
| 1597 |
} |
| 1598 |
} |
| 1599 |
|
| 1600 |
diskimage_recalc_size(d); |
| 1601 |
|
| 1602 |
if ((d->total_size == 720*1024 || d->total_size == 1474560 |
| 1603 |
|| d->total_size == 2949120 || d->total_size == 1228800) |
| 1604 |
&& !prefix_i && !prefix_s) |
| 1605 |
d->type = DISKIMAGE_FLOPPY; |
| 1606 |
|
| 1607 |
switch (d->type) { |
| 1608 |
case DISKIMAGE_FLOPPY: |
| 1609 |
if (d->total_size < 737280) { |
| 1610 |
fatal("\nTODO: small (non-80-cylinder) floppies?\n\n"); |
| 1611 |
exit(1); |
| 1612 |
} |
| 1613 |
d->cylinders = 80; |
| 1614 |
d->heads = 2; |
| 1615 |
d->sectors_per_track = d->total_size / (d->cylinders * |
| 1616 |
d->heads * 512); |
| 1617 |
break; |
| 1618 |
default:/* Non-floppies: */ |
| 1619 |
d->heads = 16; |
| 1620 |
d->sectors_per_track = 63; |
| 1621 |
if (prefix_g) { |
| 1622 |
d->chs_override = 1; |
| 1623 |
d->heads = override_heads; |
| 1624 |
d->sectors_per_track = override_spt; |
| 1625 |
} |
| 1626 |
bytespercyl = d->heads * d->sectors_per_track * 512; |
| 1627 |
d->cylinders = d->total_size / bytespercyl; |
| 1628 |
if (d->cylinders * bytespercyl < d->total_size) |
| 1629 |
d->cylinders ++; |
| 1630 |
} |
| 1631 |
|
| 1632 |
d->rpms = 3600; |
| 1633 |
|
| 1634 |
if (prefix_b) |
| 1635 |
d->is_boot_device = 1; |
| 1636 |
|
| 1637 |
d->writable = access(fname, W_OK) == 0? 1 : 0; |
| 1638 |
|
| 1639 |
if (d->is_a_cdrom || prefix_r) |
| 1640 |
d->writable = 0; |
| 1641 |
|
| 1642 |
d->f = fopen(fname, d->writable? "r+" : "r"); |
| 1643 |
if (d->f == NULL) { |
| 1644 |
perror(fname); |
| 1645 |
exit(1); |
| 1646 |
} |
| 1647 |
|
| 1648 |
/* Calculate which ID to use: */ |
| 1649 |
if (prefix_id == -1) { |
| 1650 |
int free = 0, collision = 1; |
| 1651 |
|
| 1652 |
while (collision) { |
| 1653 |
collision = 0; |
| 1654 |
d2 = machine->first_diskimage; |
| 1655 |
while (d2 != NULL) { |
| 1656 |
/* (don't compare against ourselves :) */ |
| 1657 |
if (d2 == d) { |
| 1658 |
d2 = d2->next; |
| 1659 |
continue; |
| 1660 |
} |
| 1661 |
if (d2->id == free && d2->type == d->type) { |
| 1662 |
collision = 1; |
| 1663 |
break; |
| 1664 |
} |
| 1665 |
d2 = d2->next; |
| 1666 |
} |
| 1667 |
if (!collision) |
| 1668 |
id = free; |
| 1669 |
else |
| 1670 |
free ++; |
| 1671 |
} |
| 1672 |
} else { |
| 1673 |
id = prefix_id; |
| 1674 |
d2 = machine->first_diskimage; |
| 1675 |
while (d2 != NULL) { |
| 1676 |
/* (don't compare against ourselves :) */ |
| 1677 |
if (d2 == d) { |
| 1678 |
d2 = d2->next; |
| 1679 |
continue; |
| 1680 |
} |
| 1681 |
if (d2->id == id && d2->type == d->type) { |
| 1682 |
fprintf(stderr, "disk image id %i " |
| 1683 |
"already in use\n", id); |
| 1684 |
exit(1); |
| 1685 |
} |
| 1686 |
d2 = d2->next; |
| 1687 |
} |
| 1688 |
} |
| 1689 |
|
| 1690 |
d->id = id; |
| 1691 |
|
| 1692 |
return id; |
| 1693 |
} |
| 1694 |
|
| 1695 |
|
| 1696 |
/* |
| 1697 |
* diskimage_bootdev(): |
| 1698 |
* |
| 1699 |
* Returns the disk id of the device which we're booting from. If typep is |
| 1700 |
* non-NULL, the type is returned as well. |
| 1701 |
* |
| 1702 |
* If no disk was used as boot device, then -1 is returned. (In practice, |
| 1703 |
* this is used to fake network (tftp) boot.) |
| 1704 |
*/ |
| 1705 |
int diskimage_bootdev(struct machine *machine, int *typep) |
| 1706 |
{ |
| 1707 |
struct diskimage *d; |
| 1708 |
|
| 1709 |
d = machine->first_diskimage; |
| 1710 |
while (d != NULL) { |
| 1711 |
if (d->is_boot_device) { |
| 1712 |
if (typep != NULL) |
| 1713 |
*typep = d->type; |
| 1714 |
return d->id; |
| 1715 |
} |
| 1716 |
d = d->next; |
| 1717 |
} |
| 1718 |
|
| 1719 |
d = machine->first_diskimage; |
| 1720 |
if (d != NULL) { |
| 1721 |
if (typep != NULL) |
| 1722 |
*typep = d->type; |
| 1723 |
return d->id; |
| 1724 |
} |
| 1725 |
|
| 1726 |
return -1; |
| 1727 |
} |
| 1728 |
|
| 1729 |
|
| 1730 |
/* |
| 1731 |
* diskimage_getname(): |
| 1732 |
* |
| 1733 |
* Returns 1 if a valid disk image name was returned, 0 otherwise. |
| 1734 |
*/ |
| 1735 |
int diskimage_getname(struct machine *machine, int id, int type, |
| 1736 |
char *buf, size_t bufsize) |
| 1737 |
{ |
| 1738 |
struct diskimage *d = machine->first_diskimage; |
| 1739 |
|
| 1740 |
if (buf == NULL) |
| 1741 |
return 0; |
| 1742 |
|
| 1743 |
while (d != NULL) { |
| 1744 |
if (d->type == type && d->id == id) { |
| 1745 |
char *p = strrchr(d->fname, '/'); |
| 1746 |
if (p == NULL) |
| 1747 |
p = d->fname; |
| 1748 |
else |
| 1749 |
p ++; |
| 1750 |
snprintf(buf, bufsize, "%s", p); |
| 1751 |
return 1; |
| 1752 |
} |
| 1753 |
d = d->next; |
| 1754 |
} |
| 1755 |
return 0; |
| 1756 |
} |
| 1757 |
|
| 1758 |
|
| 1759 |
/* |
| 1760 |
* diskimage_is_a_cdrom(): |
| 1761 |
* |
| 1762 |
* Returns 1 if a disk image is a CDROM, 0 otherwise. |
| 1763 |
*/ |
| 1764 |
int diskimage_is_a_cdrom(struct machine *machine, int id, int type) |
| 1765 |
{ |
| 1766 |
struct diskimage *d = machine->first_diskimage; |
| 1767 |
|
| 1768 |
while (d != NULL) { |
| 1769 |
if (d->type == type && d->id == id) |
| 1770 |
return d->is_a_cdrom; |
| 1771 |
d = d->next; |
| 1772 |
} |
| 1773 |
return 0; |
| 1774 |
} |
| 1775 |
|
| 1776 |
|
| 1777 |
/* |
| 1778 |
* diskimage_is_a_tape(): |
| 1779 |
* |
| 1780 |
* Returns 1 if a disk image is a tape, 0 otherwise. |
| 1781 |
* |
| 1782 |
* (Used in src/machine.c, to select 'rz' vs 'tz' for DECstation |
| 1783 |
* boot strings.) |
| 1784 |
*/ |
| 1785 |
int diskimage_is_a_tape(struct machine *machine, int id, int type) |
| 1786 |
{ |
| 1787 |
struct diskimage *d = machine->first_diskimage; |
| 1788 |
|
| 1789 |
while (d != NULL) { |
| 1790 |
if (d->type == type && d->id == id) |
| 1791 |
return d->is_a_tape; |
| 1792 |
d = d->next; |
| 1793 |
} |
| 1794 |
return 0; |
| 1795 |
} |
| 1796 |
|
| 1797 |
|
| 1798 |
/* |
| 1799 |
* diskimage_dump_info(): |
| 1800 |
* |
| 1801 |
* Debug dump of all diskimages that are loaded for a specific machine. |
| 1802 |
*/ |
| 1803 |
void diskimage_dump_info(struct machine *machine) |
| 1804 |
{ |
| 1805 |
int iadd = DEBUG_INDENTATION; |
| 1806 |
struct diskimage *d = machine->first_diskimage; |
| 1807 |
|
| 1808 |
while (d != NULL) { |
| 1809 |
debug("diskimage: %s\n", d->fname); |
| 1810 |
debug_indentation(iadd); |
| 1811 |
|
| 1812 |
switch (d->type) { |
| 1813 |
case DISKIMAGE_SCSI: |
| 1814 |
debug("SCSI"); |
| 1815 |
break; |
| 1816 |
case DISKIMAGE_IDE: |
| 1817 |
debug("IDE"); |
| 1818 |
break; |
| 1819 |
case DISKIMAGE_FLOPPY: |
| 1820 |
debug("FLOPPY"); |
| 1821 |
break; |
| 1822 |
default: |
| 1823 |
debug("UNKNOWN type %i", d->type); |
| 1824 |
} |
| 1825 |
|
| 1826 |
debug(" %s", d->is_a_tape? "TAPE" : |
| 1827 |
(d->is_a_cdrom? "CD-ROM" : "DISK")); |
| 1828 |
debug(" id %i, ", d->id); |
| 1829 |
debug("%s, ", d->writable? "read/write" : "read-only"); |
| 1830 |
|
| 1831 |
if (d->type == DISKIMAGE_FLOPPY) |
| 1832 |
debug("%lli KB", (long long) (d->total_size / 1024)); |
| 1833 |
else |
| 1834 |
debug("%lli MB", (long long) (d->total_size / 1048576)); |
| 1835 |
|
| 1836 |
if (d->type == DISKIMAGE_FLOPPY || d->chs_override) |
| 1837 |
debug(" (CHS=%i,%i,%i)", d->cylinders, d->heads, |
| 1838 |
d->sectors_per_track); |
| 1839 |
else |
| 1840 |
debug(" (%lli sectors)", (long long) |
| 1841 |
(d->total_size / 512)); |
| 1842 |
|
| 1843 |
if (d->is_boot_device) |
| 1844 |
debug(" (BOOT)"); |
| 1845 |
debug("\n"); |
| 1846 |
|
| 1847 |
debug_indentation(-iadd); |
| 1848 |
|
| 1849 |
d = d->next; |
| 1850 |
} |
| 1851 |
} |
| 1852 |
|
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