793 lines
22 KiB
C++
793 lines
22 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: scsi_device.cc,v 1.21 2011-01-24 20:35:51 vruppert Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2007-2011 The Bochs Project
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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// SCSI emulation layer ported from the Qemu project
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// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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// is used to know when we are exporting symbols and when we are importing.
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#define BX_PLUGGABLE
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#include "iodev.h"
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#if BX_SUPPORT_PCI && BX_SUPPORT_PCIUSB
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#include "hdimage.h"
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#include "cdrom.h"
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#include "scsi_device.h"
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#define LOG_THIS
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#define BX_MIN(a,b) ( ((a)>(b))?(b):(a) )
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#define DEVICE_NAME "SCSI drive"
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static SCSIRequest *free_requests = NULL;
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static Bit32u serial_number = 12345678;
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scsi_device_t::scsi_device_t(device_image_t *_hdimage, int _tcq,
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scsi_completionfn _completion, void *_dev)
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{
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type = SCSIDEV_TYPE_DISK;
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cdrom = NULL;
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hdimage = _hdimage;
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requests = NULL;
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sense = 0;
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tcq = _tcq;
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completion = _completion;
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dev = _dev;
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cluster_size = 1;
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locked = 0;
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inserted = 1;
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max_lba = (hdimage->hd_size / 512) - 1;
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sprintf(drive_serial_str, "%d", serial_number++);
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put("SCSID");
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}
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scsi_device_t::scsi_device_t(LOWLEVEL_CDROM *_cdrom, int _tcq,
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scsi_completionfn _completion, void *_dev)
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{
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type = SCSIDEV_TYPE_CDROM;
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cdrom = _cdrom;
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hdimage = NULL;
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requests = NULL;
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sense = 0;
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tcq = _tcq;
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completion = _completion;
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dev = _dev;
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cluster_size = 4;
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locked = 0;
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inserted = 1;
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max_lba = cdrom->capacity() - 1;
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sprintf(drive_serial_str, "%d", serial_number++);
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put("SCSIC");
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}
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scsi_device_t::~scsi_device_t(void)
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{
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SCSIRequest *r, *next;
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if (requests) {
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r = requests;
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while (r != NULL) {
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next = r->next;
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delete r;
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r = next;
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}
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}
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if (free_requests) {
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r = free_requests;
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while (r != NULL) {
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next = r->next;
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delete r;
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r = next;
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}
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free_requests = NULL;
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}
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}
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void scsi_device_t::register_state(bx_list_c *parent, const char *name)
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{
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bx_list_c *list = new bx_list_c(parent, name, "", 1);
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new bx_shadow_num_c(list, "sense", &sense);
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// TODO: save/restore for SCSI requests
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}
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SCSIRequest* scsi_device_t::scsi_new_request(Bit32u tag)
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{
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SCSIRequest *r;
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if (free_requests) {
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r = free_requests;
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free_requests = r->next;
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} else {
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r = new SCSIRequest;
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}
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r->dev = this;
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r->tag = tag;
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r->sector_count = 0;
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r->buf_len = 0;
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r->status = 0;
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r->next = requests;
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requests = r;
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return r;
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}
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void scsi_device_t::scsi_remove_request(SCSIRequest *r)
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{
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SCSIRequest *last;
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if (requests == r) {
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requests = r->next;
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} else {
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last = requests;
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while (last != NULL) {
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if (last->next != r)
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last = last->next;
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else
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break;
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}
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if (last) {
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last->next = r->next;
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} else {
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BX_ERROR(("orphaned request"));
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}
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}
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r->next = free_requests;
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free_requests = r;
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}
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SCSIRequest* scsi_device_t::scsi_find_request(Bit32u tag)
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{
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SCSIRequest *r = requests;
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while (r != NULL) {
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if (r->tag != tag)
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r = r->next;
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else
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break;
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}
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return r;
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}
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void scsi_device_t::scsi_command_complete(SCSIRequest *r, int status, int _sense)
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{
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Bit32u tag;
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BX_DEBUG(("command complete tag=0x%x status=%d sense=%d", r->tag, status, sense));
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sense = _sense;
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tag = r->tag;
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scsi_remove_request(r);
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completion(dev, SCSI_REASON_DONE, tag, status);
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}
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void scsi_device_t::scsi_cancel_io(Bit32u tag)
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{
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BX_DEBUG(("cancel tag=0x%x", tag));
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SCSIRequest *r = scsi_find_request(tag);
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if (r) {
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scsi_remove_request(r);
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}
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}
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void scsi_device_t::scsi_read_complete(void *req, int ret)
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{
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SCSIRequest *r = (SCSIRequest *)req;
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if (ret) {
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BX_ERROR(("IO error"));
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completion(r, SCSI_REASON_DATA, r->tag, 0);
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_NO_SENSE);
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return;
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}
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BX_DEBUG(("data ready tag=0x%x len=%d", r->tag, r->buf_len));
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completion(dev, SCSI_REASON_DATA, r->tag, r->buf_len);
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}
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void scsi_device_t::scsi_read_data(Bit32u tag)
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{
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Bit32u n;
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int ret;
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SCSIRequest *r = scsi_find_request(tag);
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if (!r) {
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BX_ERROR(("bad read tag 0x%x", tag));
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// ??? This is the wrong error.
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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return;
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}
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if (r->sector_count == (Bit32u)-1) {
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BX_DEBUG(("read buf_len=%d", r->buf_len));
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r->sector_count = 0;
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completion(dev, SCSI_REASON_DATA, r->tag, r->buf_len);
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return;
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}
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BX_DEBUG(("read sector_count=%d", r->sector_count));
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if (r->sector_count == 0) {
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scsi_command_complete(r, STATUS_GOOD, SENSE_NO_SENSE);
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return;
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}
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n = r->sector_count;
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if (n > (Bit32u)(SCSI_DMA_BUF_SIZE / (512 * cluster_size)))
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n = SCSI_DMA_BUF_SIZE / (512 * cluster_size);
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r->buf_len = n * 512 * cluster_size;
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if (type == SCSIDEV_TYPE_CDROM) {
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if (!cdrom->read_block(r->dma_buf, (Bit32u)r->sector, 2048)) {
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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} else {
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scsi_read_complete((void*)r, 0);
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}
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} else {
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ret = (int)hdimage->lseek(r->sector * 512, SEEK_SET);
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if (ret < 0) {
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BX_ERROR(("could not lseek() hard drive image file"));
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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}
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ret = hdimage->read((bx_ptr_t)r->dma_buf, r->buf_len);
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if (ret < r->buf_len) {
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BX_ERROR(("could not read() hard drive image file"));
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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} else {
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scsi_read_complete((void*)r, 0);
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}
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}
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r->sector += n;
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r->sector_count -= n;
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}
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void scsi_device_t::scsi_write_complete(void *req, int ret)
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{
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SCSIRequest *r = (SCSIRequest *)req;
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Bit32u len;
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if (ret) {
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BX_ERROR(("IO error"));
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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return;
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}
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if (r->sector_count == 0) {
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scsi_command_complete(r, STATUS_GOOD, SENSE_NO_SENSE);
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} else {
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len = r->sector_count * 512;
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if (len > SCSI_DMA_BUF_SIZE) {
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len = SCSI_DMA_BUF_SIZE;
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}
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r->buf_len = len;
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BX_DEBUG(("write complete tag=0x%x more=%d", r->tag, len));
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completion(dev, SCSI_REASON_DATA, r->tag, len);
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}
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}
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int scsi_device_t::scsi_write_data(Bit32u tag)
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{
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SCSIRequest *r;
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Bit32u n;
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int ret;
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BX_DEBUG(("write data tag=0x%x", tag));
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r = scsi_find_request(tag);
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if (!r) {
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BX_ERROR(("bad write tag 0x%x", tag));
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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return 1;
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}
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if (type == SCSIDEV_TYPE_DISK) {
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n = r->buf_len / 512;
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if (n) {
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ret = (int)hdimage->lseek(r->sector * 512, SEEK_SET);
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if (ret < 0) {
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BX_ERROR(("could not lseek() hard drive image file"));
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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}
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ret = hdimage->write((bx_ptr_t)r->dma_buf, r->buf_len);
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r->sector += n;
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r->sector_count -= n;
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if (ret < r->buf_len) {
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BX_ERROR(("could not write() hard drive image file"));
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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} else {
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scsi_write_complete((void*)r, 0);
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}
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} else {
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scsi_write_complete(r, 0);
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}
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} else {
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BX_ERROR(("CD-ROM: write not supported"));
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scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
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}
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return 0;
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}
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Bit8u* scsi_device_t::scsi_get_buf(Bit32u tag)
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{
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SCSIRequest *r = scsi_find_request(tag);
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if (!r) {
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BX_ERROR(("bad buffer tag 0x%x", tag));
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return NULL;
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}
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return r->dma_buf;
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}
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Bit32s scsi_device_t::scsi_send_command(Bit32u tag, Bit8u *buf, int lun)
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{
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Bit64u nb_sectors;
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Bit64u lba;
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Bit32s len;
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int cmdlen;
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int is_write;
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Bit8u command;
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Bit8u *outbuf;
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SCSIRequest *r;
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command = buf[0];
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r = scsi_find_request(tag);
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if (r) {
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BX_ERROR(("tag 0x%x already in use", tag));
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scsi_cancel_io(tag);
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}
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r = scsi_new_request(tag);
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outbuf = r->dma_buf;
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is_write = 0;
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BX_DEBUG(("command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]));
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switch (command >> 5) {
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case 0:
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lba = buf[3] | (buf[2] << 8) | ((buf[1] & 0x1f) << 16);
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len = buf[4];
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cmdlen = 6;
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break;
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case 1:
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case 2:
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lba = buf[5] | (buf[4] << 8) | (buf[3] << 16) | (buf[2] << 24);
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len = buf[8] | (buf[7] << 8);
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cmdlen = 10;
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break;
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case 4:
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lba = buf[9] | (buf[8] << 8) | (buf[7] << 16) | (buf[6] << 24) |
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((Bit64u)buf[5] << 32) | ((Bit64u)buf[4] << 40) |
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((Bit64u)buf[3] << 48) | ((Bit64u)buf[2] << 56);
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len = buf[13] | (buf[12] << 8) | (buf[11] << 16) | (buf[10] << 24);
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cmdlen = 16;
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break;
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case 5:
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lba = buf[5] | (buf[4] << 8) | (buf[3] << 16) | (buf[2] << 24);
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len = buf[9] | (buf[8] << 8) | (buf[7] << 16) | (buf[6] << 24);
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cmdlen = 12;
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break;
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default:
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BX_ERROR(("Unsupported command length, command %x", command));
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goto fail;
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}
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if (lun || buf[1] >> 5) {
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BX_ERROR(("unimplemented LUN %d", lun ? lun : buf[1] >> 5));
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if ((command != 0x03) && (command != 0x12)) // REQUEST SENSE and INQUIRY
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goto fail;
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}
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switch (command) {
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case 0x0:
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BX_DEBUG(("Test Unit Ready"));
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if (!inserted)
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goto notready;
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break;
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case 0x03:
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BX_DEBUG(("request Sense (len %d)", len));
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if (len < 4)
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goto fail;
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memset(outbuf, 0, 4);
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r->buf_len = 4;
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if ((sense == SENSE_NOT_READY) && (len >= 18)) {
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memset(outbuf, 0, 18);
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r->buf_len = 18;
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outbuf[7] = 10;
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/* asc 0x3a, ascq 0: Medium not present */
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outbuf[12] = 0x3a;
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outbuf[13] = 0;
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}
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outbuf[0] = 0xf0;
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outbuf[1] = 0;
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outbuf[2] = sense;
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break;
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case 0x12:
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BX_DEBUG(("inquiry (len %d)", len));
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if (buf[1] & 0x2) {
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// Command support data - optional, not implemented
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BX_ERROR(("optional INQUIRY command support request not implemented"));
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goto fail;
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} else if (buf[1] & 0x1) {
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// Vital product data
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Bit8u page_code = buf[2];
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if (len < 4) {
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BX_ERROR(("Error: Inquiry (EVPD[%02X]) buffer size %d is less than 4", page_code, len));
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goto fail;
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}
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switch (page_code) {
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case 0x00:
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// Supported page codes, mandatory
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BX_DEBUG(("Inquiry EVPD[Supported pages] buffer size %d", len));
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r->buf_len = 0;
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if (type == SCSIDEV_TYPE_CDROM) {
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outbuf[r->buf_len++] = 5;
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} else {
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outbuf[r->buf_len++] = 0;
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}
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outbuf[r->buf_len++] = 0x00; // this page
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outbuf[r->buf_len++] = 0x00;
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outbuf[r->buf_len++] = 3; // number of pages
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outbuf[r->buf_len++] = 0x00; // list of supported pages (this page)
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outbuf[r->buf_len++] = 0x80; // unit serial number
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outbuf[r->buf_len++] = 0x83; // device identification
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break;
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case 0x80:
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{
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int l;
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// Device serial number, optional
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if (len < 4) {
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BX_ERROR(("Error: EVPD[Serial number] Inquiry buffer size %d too small, %d needed", len, 4));
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goto fail;
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}
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BX_DEBUG(("Inquiry EVPD[Serial number] buffer size %d\n", len));
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l = BX_MIN(len, (int)strlen(drive_serial_str));
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r->buf_len = 0;
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// Supported page codes
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if (type == SCSIDEV_TYPE_CDROM) {
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outbuf[r->buf_len++] = 5;
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} else {
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outbuf[r->buf_len++] = 0;
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}
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outbuf[r->buf_len++] = 0x80; // this page
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outbuf[r->buf_len++] = 0x00;
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outbuf[r->buf_len++] = l;
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memcpy(&outbuf[r->buf_len], drive_serial_str, l);
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r->buf_len += l;
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}
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break;
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case 0x83:
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{
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// Device identification page, mandatory
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int max_len = 255 - 8;
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int id_len = strlen(DEVICE_NAME);
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if (id_len > max_len)
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id_len = max_len;
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BX_DEBUG(("Inquiry EVPD[Device identification] buffer size %d", len));
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r->buf_len = 0;
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if (type == SCSIDEV_TYPE_CDROM) {
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outbuf[r->buf_len++] = 5;
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} else {
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outbuf[r->buf_len++] = 0;
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}
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outbuf[r->buf_len++] = 0x83; // this page
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outbuf[r->buf_len++] = 0x00;
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outbuf[r->buf_len++] = 3 + id_len;
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outbuf[r->buf_len++] = 0x2; // ASCII
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outbuf[r->buf_len++] = 0; // not officially assigned
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outbuf[r->buf_len++] = 0; // reserved
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outbuf[r->buf_len++] = id_len; // length of data following
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|
||
memcpy(&outbuf[r->buf_len], DEVICE_NAME, id_len);
|
||
r->buf_len += id_len;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
BX_ERROR(("Error: unsupported Inquiry (EVPD[%02X]) buffer size %d", page_code, len));
|
||
goto fail;
|
||
}
|
||
// done with EVPD
|
||
break;
|
||
} else {
|
||
// Standard INQUIRY data
|
||
if (buf[2] != 0) {
|
||
BX_ERROR(("Error: Inquiry (STANDARD) page or code is non-zero [%02X]", buf[2]));
|
||
goto fail;
|
||
}
|
||
|
||
// PAGE CODE == 0
|
||
if (len < 5) {
|
||
BX_ERROR(("Error: Inquiry (STANDARD) buffer size %d is less than 5", len));
|
||
goto fail;
|
||
}
|
||
|
||
if (len < 36) {
|
||
BX_ERROR(("Error: Inquiry (STANDARD) buffer size %d is less than 36 (TODO: only 5 required)", len));
|
||
}
|
||
}
|
||
|
||
if(len > SCSI_MAX_INQUIRY_LEN)
|
||
len = SCSI_MAX_INQUIRY_LEN;
|
||
memset(outbuf, 0, len);
|
||
if (lun || buf[1] >> 5) {
|
||
outbuf[0] = 0x7f; // LUN not supported
|
||
} else if (type == SCSIDEV_TYPE_CDROM) {
|
||
outbuf[0] = 5;
|
||
outbuf[1] = 0x80;
|
||
memcpy(&outbuf[16], "BOCHS CD-ROM ", 16);
|
||
} else {
|
||
outbuf[0] = 0;
|
||
memcpy(&outbuf[16], "BOCHS HARDDISK ", 16);
|
||
}
|
||
memcpy(&outbuf[8], "BOCHS ", 8);
|
||
memcpy(&outbuf[32], "1.0", 4);
|
||
// Identify device as SCSI-3 rev 1.
|
||
// Some later commands are also implemented.
|
||
outbuf[2] = 3;
|
||
outbuf[3] = 2; // Format 2
|
||
outbuf[4] = len - 5; // Additional Length = (Len - 1) - 4
|
||
// Sync data transfer and TCQ.
|
||
outbuf[7] = 0x10 | (tcq ? 0x02 : 0);
|
||
r->buf_len = len;
|
||
break;
|
||
case 0x16:
|
||
BX_INFO(("Reserve(6)"));
|
||
if (buf[1] & 1)
|
||
goto fail;
|
||
break;
|
||
case 0x17:
|
||
BX_INFO(("Release(6)"));
|
||
if (buf[1] & 1)
|
||
goto fail;
|
||
break;
|
||
case 0x1a:
|
||
case 0x5a:
|
||
{
|
||
Bit8u *p;
|
||
int page;
|
||
|
||
page = buf[2] & 0x3f;
|
||
BX_DEBUG(("mode sense (page %d, len %d)", page, len));
|
||
p = outbuf;
|
||
memset(p, 0, 4);
|
||
outbuf[1] = 0; /* Default media type. */
|
||
outbuf[3] = 0; /* Block descriptor length. */
|
||
if (type == SCSIDEV_TYPE_CDROM) {
|
||
outbuf[2] = 0x80; /* Readonly. */
|
||
}
|
||
p += 4;
|
||
if ((page == 4) || (page == 5)) {
|
||
BX_ERROR(("mode sense: page %d not implemented", page));
|
||
}
|
||
if ((page == 8 || page == 0x3f)) {
|
||
/* Caching page. */
|
||
memset(p, 0, 20);
|
||
p[0] = 8;
|
||
p[1] = 0x12;
|
||
p[2] = 4; /* WCE */
|
||
p += 20;
|
||
}
|
||
if ((page == 0x3f || page == 0x2a)
|
||
&& (type == SCSIDEV_TYPE_CDROM)) {
|
||
/* CD Capabilities and Mechanical Status page. */
|
||
p[0] = 0x2a;
|
||
p[1] = 0x14;
|
||
p[2] = 3; // CD-R & CD-RW read
|
||
p[3] = 0; // Writing not supported
|
||
p[4] = 0x7f; /* Audio, composite, digital out,
|
||
mode 2 form 1&2, multi session */
|
||
p[5] = 0xff; /* CD DA, DA accurate, RW supported,
|
||
RW corrected, C2 errors, ISRC,
|
||
UPC, Bar code */
|
||
p[6] = 0x2d | (locked ? 2 : 0);
|
||
/* Locking supported, jumper present, eject, tray */
|
||
p[7] = 0; /* no volume & mute control, no changer */
|
||
p[8] = (50 * 176) >> 8; // 50x read speed
|
||
p[9] = (50 * 176) & 0xff;
|
||
p[10] = 0 >> 8; // No volume
|
||
p[11] = 0 & 0xff;
|
||
p[12] = 2048 >> 8; // 2M buffer
|
||
p[13] = 2048 & 0xff;
|
||
p[14] = (16 * 176) >> 8; // 16x read speed current
|
||
p[15] = (16 * 176) & 0xff;
|
||
p[18] = (16 * 176) >> 8; // 16x write speed
|
||
p[19] = (16 * 176) & 0xff;
|
||
p[20] = (16 * 176) >> 8; // 16x write speed current
|
||
p[21] = (16 * 176) & 0xff;
|
||
p += 22;
|
||
}
|
||
r->buf_len = p - outbuf;
|
||
outbuf[0] = r->buf_len - 4;
|
||
if (r->buf_len > (int)len)
|
||
r->buf_len = len;
|
||
}
|
||
break;
|
||
case 0x1b:
|
||
BX_INFO(("Start Stop Unit"));
|
||
if (type == SCSIDEV_TYPE_CDROM && (buf[4] & 2)) {
|
||
if (!(buf[4] & 1)) {
|
||
// eject medium
|
||
cdrom->eject_cdrom();
|
||
inserted = 0;
|
||
}
|
||
}
|
||
break;
|
||
case 0x1e:
|
||
BX_INFO(("Prevent Allow Medium Removal (prevent = %d)", buf[4] & 3));
|
||
locked = buf[4] & 1;
|
||
break;
|
||
case 0x25:
|
||
BX_DEBUG(("Read Capacity"));
|
||
// The normal LEN field for this command is zero
|
||
memset(outbuf, 0, 8);
|
||
if (type == SCSIDEV_TYPE_CDROM) {
|
||
nb_sectors = cdrom->capacity();
|
||
} else {
|
||
nb_sectors = hdimage->hd_size / 512;
|
||
}
|
||
/* Returned value is the address of the last sector. */
|
||
if (nb_sectors) {
|
||
nb_sectors--;
|
||
outbuf[0] = (Bit8u)((nb_sectors >> 24) & 0xff);
|
||
outbuf[1] = (Bit8u)((nb_sectors >> 16) & 0xff);
|
||
outbuf[2] = (Bit8u)((nb_sectors >> 8) & 0xff);
|
||
outbuf[3] = (Bit8u)(nb_sectors & 0xff);
|
||
outbuf[4] = 0;
|
||
outbuf[5] = 0;
|
||
outbuf[6] = cluster_size * 2;
|
||
outbuf[7] = 0;
|
||
r->buf_len = 8;
|
||
} else {
|
||
notready:
|
||
scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_NOT_READY);
|
||
return 0;
|
||
}
|
||
break;
|
||
case 0x08:
|
||
case 0x28:
|
||
case 0x88:
|
||
BX_DEBUG(("Read (sector "FMT_LL"d, count %d)", lba, len));
|
||
if (lba > max_lba)
|
||
goto illegal_lba;
|
||
r->sector = lba;
|
||
r->sector_count = len;
|
||
break;
|
||
case 0x0a:
|
||
case 0x2a:
|
||
case 0x8a:
|
||
BX_DEBUG(("Write (sector "FMT_LL"d, count %d)", lba, len));
|
||
if (lba > max_lba)
|
||
goto illegal_lba;
|
||
r->sector = lba;
|
||
r->sector_count = len;
|
||
is_write = 1;
|
||
break;
|
||
case 0x35:
|
||
BX_DEBUG(("Syncronise cache (sector "FMT_LL"d, count %d)", lba, len));
|
||
// TODO: flush cache
|
||
break;
|
||
case 0x43:
|
||
{
|
||
int start_track, format, msf, toclen;
|
||
|
||
if (type == SCSIDEV_TYPE_CDROM) {
|
||
msf = buf[1] & 2;
|
||
format = buf[2] & 0xf;
|
||
start_track = buf[6];
|
||
BX_DEBUG(("Read TOC (track %d format %d msf %d)", start_track, format, msf >> 1));
|
||
cdrom->read_toc(outbuf, &toclen, msf, start_track, format);
|
||
if (toclen > 0) {
|
||
if (len > toclen)
|
||
len = toclen;
|
||
r->buf_len = len;
|
||
break;
|
||
}
|
||
BX_ERROR(("Read TOC error"));
|
||
goto fail;
|
||
} else {
|
||
goto fail;
|
||
}
|
||
}
|
||
case 0x46:
|
||
BX_DEBUG(("Get Configuration (rt %d, maxlen %d)", buf[1] & 3, len));
|
||
memset(outbuf, 0, 8);
|
||
/* ??? This shoud probably return much more information. For now
|
||
just return the basic header indicating the CD-ROM profile. */
|
||
outbuf[7] = 8; // CD-ROM
|
||
r->buf_len = 8;
|
||
break;
|
||
case 0x56:
|
||
BX_INFO(("Reserve(10)"));
|
||
if (buf[1] & 3)
|
||
goto fail;
|
||
break;
|
||
case 0x57:
|
||
BX_INFO(("Release(10)"));
|
||
if (buf[1] & 3)
|
||
goto fail;
|
||
break;
|
||
case 0xa0:
|
||
BX_INFO(("Report LUNs (len %d)", len));
|
||
if (len < 16)
|
||
goto fail;
|
||
memset(outbuf, 0, 16);
|
||
outbuf[3] = 8;
|
||
r->buf_len = 16;
|
||
break;
|
||
case 0x2f:
|
||
BX_INFO(("Verify"));
|
||
break;
|
||
case 0x23: {
|
||
// USBMASS-UFI10.pdf rev 1.0 Section 4.10
|
||
BX_INFO(("READ FORMAT CAPACITIES (MMC)"));
|
||
|
||
unsigned len = (buf[7]<<8) | buf[8];
|
||
#define OUR_LEN 12
|
||
|
||
// Cap List Header
|
||
outbuf[0] = 0;
|
||
outbuf[1] = 0;
|
||
outbuf[2] = 0;
|
||
outbuf[3] = OUR_LEN;
|
||
|
||
// Current/Max Cap Header
|
||
if (type == SCSIDEV_TYPE_CDROM) {
|
||
nb_sectors = cdrom->capacity();
|
||
} else {
|
||
nb_sectors = (hdimage->hd_size / 512);
|
||
}
|
||
/* Returned value is the address of the last sector. */
|
||
outbuf[4] = (Bit8u)((nb_sectors >> 24) & 0xff);
|
||
outbuf[5] = (Bit8u)((nb_sectors >> 16) & 0xff);
|
||
outbuf[6] = (Bit8u)((nb_sectors >> 8) & 0xff);
|
||
outbuf[7] = (Bit8u)(nb_sectors & 0xff);
|
||
outbuf[8] = 2; // formatted (1 = unformatted)
|
||
outbuf[9] = 0;
|
||
outbuf[10] = cluster_size * 2;
|
||
outbuf[11] = 0;
|
||
|
||
r->buf_len = (len < OUR_LEN) ? len : OUR_LEN;
|
||
|
||
}
|
||
break;
|
||
default:
|
||
BX_ERROR(("Unknown SCSI command (%2.2x)", buf[0]));
|
||
fail:
|
||
scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_ILLEGAL_REQUEST);
|
||
return 0;
|
||
illegal_lba:
|
||
scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR);
|
||
return 0;
|
||
}
|
||
if (r->sector_count == 0 && r->buf_len == 0) {
|
||
scsi_command_complete(r, STATUS_GOOD, SENSE_NO_SENSE);
|
||
}
|
||
len = r->sector_count * 512 * cluster_size + r->buf_len;
|
||
if (is_write) {
|
||
return -len;
|
||
} else {
|
||
if (!r->sector_count)
|
||
r->sector_count = (Bit32u) -1;
|
||
return len;
|
||
}
|
||
}
|
||
|
||
#endif // BX_SUPPORT_PCI && BX_SUPPORT_PCIUSB
|