vbatts/grub
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

splitting generic ata from pata.

Browse source
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-12-24 16:07:53 +01:00
parent 7e8b77c033
commit c7336d912c
10 changed files with 1095 additions and 843 deletions
Download patch file Download diff file Expand all files Collapse all files

122
include/grub/ata.h
View file

@ -97,21 +97,64 @@ enum grub_ata_timeout_milliseconds
GRUB_ATA_TOUT_DATA = 10000 /* 10s DATA I/O timeout. */
};
struct grub_ata_device
typedef union
{
/* IDE port to use. */
int port;
grub_uint8_t raw[11];
struct
{
union
{
grub_uint8_t features;
grub_uint8_t error;
};
union
{
grub_uint8_t sectors;
grub_uint8_t atapi_ireason;
};
union
{
grub_uint8_t lba_low;
grub_uint8_t sectnum;
};
union
{
grub_uint8_t lba_mid;
grub_uint8_t cyllsb;
grub_uint8_t atapi_cntlow;
};
union
{
grub_uint8_t lba_high;
grub_uint8_t cylmsb;
grub_uint8_t atapi_cnthigh;
};
grub_uint8_t disk;
union
{
grub_uint8_t cmd;
grub_uint8_t status;
};
grub_uint8_t sectors48;
grub_uint8_t lba48_low;
grub_uint8_t lba48_mid;
grub_uint8_t lba48_high;
};
} grub_ata_regs_t;
/* IO addresses on which the registers for this device can be
found. */
grub_port_t ioaddress;
grub_port_t ioaddress2;
/* Two devices can be connected to a single cable. Use this field
to select device 0 (commonly known as "master") or device 1
(commonly known as "slave"). */
int device;
/* ATA pass through parameters and function. */
struct grub_disk_ata_pass_through_parms
{
grub_ata_regs_t taskfile;
void * buffer;
grub_size_t size;
int write;
void *cmd;
int cmdsize;
};
struct grub_ata
{
/* Addressing methods available for accessing this device. If CHS
is only available, use that. Otherwise use LBA, except for the
high sectors. In that case use LBA48. */
@ -128,47 +171,36 @@ struct grub_ata_device
/* Set to 0 for ATA, set to 1 for ATAPI. */
int atapi;
struct grub_ata_device *next;
void *data;
struct grub_ata_dev *dev;
};
grub_err_t EXPORT_FUNC(grub_ata_wait_not_busy) (struct grub_ata_device *dev,
int milliseconds);
grub_err_t EXPORT_FUNC(grub_ata_wait_drq) (struct grub_ata_device *dev,
int rw, int milliseconds);
void EXPORT_FUNC(grub_ata_pio_read) (struct grub_ata_device *dev,
char *buf, grub_size_t size);
typedef struct grub_ata *grub_ata_t;
static inline void
grub_ata_regset (struct grub_ata_device *dev, int reg, int val)
struct grub_ata_dev
{
grub_outb (val, dev->ioaddress + reg);
}
/* Call HOOK with each device name, until HOOK returns non-zero. */
int (*iterate) (int (*hook) (int id, int bus));
static inline grub_uint8_t
grub_ata_regget (struct grub_ata_device *dev, int reg)
{
return grub_inb (dev->ioaddress + reg);
}
/* Open the device named NAME, and set up SCSI. */
grub_err_t (*open) (int id, int bus, struct grub_ata *scsi);
static inline void
grub_ata_regset2 (struct grub_ata_device *dev, int reg, int val)
{
grub_outb (val, dev->ioaddress2 + reg);
}
/* Close the scsi device SCSI. */
void (*close) (struct grub_ata *ata);
static inline grub_uint8_t
grub_ata_regget2 (struct grub_ata_device *dev, int reg)
{
return grub_inb (dev->ioaddress2 + reg);
}
/* Read SIZE bytes from the device SCSI into BUF after sending the
command CMD of size CMDSIZE. */
grub_err_t (*readwrite) (struct grub_ata *ata,
struct grub_disk_ata_pass_through_parms *parms);
static inline grub_err_t
grub_ata_check_ready (struct grub_ata_device *dev)
{
if (grub_ata_regget (dev, GRUB_ATA_REG_STATUS) & GRUB_ATA_STATUS_BUSY)
return grub_ata_wait_not_busy (dev, GRUB_ATA_TOUT_STD);
/* The next scsi device. */
struct grub_ata_dev *next;
};
return GRUB_ERR_NONE;
}
typedef struct grub_ata_dev *grub_ata_dev_t;
void grub_ata_dev_register (grub_ata_dev_t dev);
void grub_ata_dev_unregister (grub_ata_dev_t dev);
#endif /* ! GRUB_ATA_HEADER */

13
include/grub/disk.h
View file

@ -165,16 +165,5 @@ grub_uint64_t EXPORT_FUNC(grub_disk_get_size) (grub_disk_t disk);
extern void (* EXPORT_VAR(grub_disk_firmware_fini)) (void);
extern int EXPORT_VAR(grub_disk_firmware_is_tainted);
/* ATA pass through parameters and function. */
struct grub_disk_ata_pass_through_parms
{
grub_uint8_t taskfile[8];
void * buffer;
int size;
};
extern grub_err_t (* EXPORT_VAR(grub_disk_ata_pass_through)) (grub_disk_t,
struct grub_disk_ata_pass_through_parms *);
#endif /* ! GRUB_DISK_HEADER */

16
include/grub/scsi.h
View file

@ -29,10 +29,13 @@ struct grub_scsi;
enum
{
GRUB_SCSI_SUBSYSTEM_USBMS,
GRUB_SCSI_SUBSYSTEM_ATAPI,
GRUB_SCSI_SUBSYSTEM_AHCI
GRUB_SCSI_SUBSYSTEM_PATA,
GRUB_SCSI_SUBSYSTEM_AHCI,
GRUB_SCSI_NUM_SUBSYSTEMS
};
extern 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
@ -46,16 +49,11 @@ grub_make_scsi_id (int subsystem, int bus, int lun)
struct grub_scsi_dev
{
/* The device name. */
const char *name;
grub_uint8_t id;
/* Call HOOK with each device name, until HOOK returns non-zero. */
int (*iterate) (int (*hook) (int bus, int luns));
int (*iterate) (int (*hook) (int id, int bus, int luns));
/* Open the device named NAME, and set up SCSI. */
grub_err_t (*open) (int bus, struct grub_scsi *scsi);
grub_err_t (*open) (int id, int bus, struct grub_scsi *scsi);
/* Close the scsi device SCSI. */
void (*close) (struct grub_scsi *scsi);