39890d308d
TODO #1: implement seek timing similar to ATA/ATAPI TODO #2: implement asynchronus i/o in lowlevel cdrom
112 lines
3.2 KiB
C++
112 lines
3.2 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// SCSI emulation layer (ported from QEMU)
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//
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// Copyright (C) 2006 CodeSourcery.
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// Based on code by Fabrice Bellard
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//
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// Written by Paul Brook
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//
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// Copyright (C) 2007-2014 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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#ifndef BX_IODEV_SCSI_DEVICE_H
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#define BX_IODEV_SCSI_DEVICE_H
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typedef void (*scsi_completionfn)(void *opaque, int reason, Bit32u tag,
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Bit32u arg);
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class scsi_device_t;
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class cdrom_base_c;
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enum scsidev_type {
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SCSIDEV_TYPE_DISK,
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SCSIDEV_TYPE_CDROM
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};
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enum scsi_reason {
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SCSI_REASON_DONE,
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SCSI_REASON_DATA
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};
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#define SENSE_NO_SENSE 0
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#define SENSE_NOT_READY 2
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#define SENSE_HARDWARE_ERROR 4
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#define SENSE_ILLEGAL_REQUEST 5
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#define STATUS_GOOD 0
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#define STATUS_CHECK_CONDITION 2
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#define SCSI_DMA_BUF_SIZE 131072
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#define SCSI_MAX_INQUIRY_LEN 256
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typedef struct SCSIRequest {
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scsi_device_t *dev;
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Bit32u tag;
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Bit64u sector;
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Bit32u sector_count;
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int buf_len;
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Bit8u dma_buf[SCSI_DMA_BUF_SIZE];
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Bit32u status;
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struct SCSIRequest *next;
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} SCSIRequest;
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class scsi_device_t : public logfunctions {
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public:
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scsi_device_t(device_image_t *_hdimage, int _tcq,
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scsi_completionfn _completion, void *_dev);
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scsi_device_t(cdrom_base_c *_cdrom, int _tcq,
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scsi_completionfn _completion, void *_dev);
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virtual ~scsi_device_t(void);
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void register_state(bx_list_c *parent, const char *name);
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Bit32s scsi_send_command(Bit32u tag, Bit8u *buf, int lun);
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void scsi_command_complete(SCSIRequest *r, int status, int sense);
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void scsi_cancel_io(Bit32u tag);
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void scsi_read_complete(void *req, int ret);
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void scsi_read_data(Bit32u tag);
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void scsi_write_complete(void *req, int ret);
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int scsi_write_data(Bit32u tag);
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Bit8u* scsi_get_buf(Bit32u tag);
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const char *get_serial_number() {return drive_serial_str;}
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void set_inserted(bx_bool value);
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bx_bool get_inserted() {return inserted;}
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protected:
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SCSIRequest* scsi_new_request(Bit32u tag);
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void scsi_remove_request(SCSIRequest *r);
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SCSIRequest *scsi_find_request(Bit32u tag);
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private:
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enum scsidev_type type;
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device_image_t *hdimage;
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cdrom_base_c *cdrom;
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SCSIRequest *requests;
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int cluster_size;
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Bit64u max_lba;
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int sense;
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int tcq;
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scsi_completionfn completion;
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void *dev;
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bx_bool locked;
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bx_bool inserted;
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char drive_serial_str[21];
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};
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#endif
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