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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_SCSI_H
#define GRUB_SCSI_H 1
#include <grub/disk.h>
typedef struct grub_scsi_dev *grub_scsi_dev_t;
void grub_scsi_dev_register (grub_scsi_dev_t dev);
void grub_scsi_dev_unregister (grub_scsi_dev_t dev);
struct grub_scsi;
enum
{
GRUB_SCSI_SUBSYSTEM_USBMS,
GRUB_SCSI_SUBSYSTEM_PATA,
GRUB_SCSI_SUBSYSTEM_AHCI,
GRUB_SCSI_NUM_SUBSYSTEMS
};
extern const char grub_scsi_names[GRUB_SCSI_NUM_SUBSYSTEMS][5];
#define GRUB_SCSI_ID_SUBSYSTEM_SHIFT 24
#define GRUB_SCSI_ID_BUS_SHIFT 8
#define GRUB_SCSI_ID_LUN_SHIFT 0
static inline grub_uint32_t
grub_make_scsi_id (int subsystem, int bus, int lun)
{
return (subsystem << GRUB_SCSI_ID_SUBSYSTEM_SHIFT)
| (bus << GRUB_SCSI_ID_BUS_SHIFT) | (lun << GRUB_SCSI_ID_LUN_SHIFT);
}
typedef int (*grub_scsi_dev_iterate_hook_t) (int id, int bus, int luns,
void *data);
struct grub_scsi_dev
{
/* Call HOOK with each device name, until HOOK returns non-zero. */
int (*iterate) (grub_scsi_dev_iterate_hook_t hook, void *hook_data,
grub_disk_pull_t pull);
/* Open the device named NAME, and set up SCSI. */
grub_err_t (*open) (int id, int bus, struct grub_scsi *scsi);
/* Close the scsi device SCSI. */
void (*close) (struct grub_scsi *scsi);
/* Read SIZE bytes from the device SCSI into BUF after sending the
command CMD of size CMDSIZE. */
grub_err_t (*read) (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
grub_size_t size, char *buf);
/* Write SIZE bytes from BUF to the device SCSI after sending the
command CMD of size CMDSIZE. */
grub_err_t (*write) (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
grub_size_t size, const char *buf);
/* The next scsi device. */
struct grub_scsi_dev *next;
};
struct grub_scsi
{
/* The underlying scsi device. */
grub_scsi_dev_t dev;
/* Type of SCSI device. XXX: Make enum. */
grub_uint8_t devtype;
int bus;
/* Number of LUNs. */
int luns;
/* LUN for this `struct grub_scsi'. */
int lun;
/* Set to 0 when not removable, 1 when removable. */
int removable;
/* Size of the device in blocks - 1. */
grub_uint64_t last_block;
/* Size of one block. */
grub_uint32_t blocksize;
/* Device-specific data. */
void *data;
};
typedef struct grub_scsi *grub_scsi_t;
#endif /* GRUB_SCSI_H */
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