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linux-sg2042/include/linux/ide.h

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _IDE_H
#define _IDE_H
/*
* linux/include/linux/ide.h
*
* Copyright (C) 1994-2002 Linus Torvalds & authors
*/
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/ata.h>
#include <linux/blk-mq.h>
#include <linux/proc_fs.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
#include <linux/bio.h>
#include <linux/pci.h>
#include <linux/completion.h>
#include <linux/pm.h>
#include <linux/mutex.h>
/* for request_sense */
#include <linux/cdrom.h>
#include <scsi/scsi_cmnd.h>
#include <asm/byteorder.h>
#include <asm/io.h>
/*
* Probably not wise to fiddle with these
*/
#define SUPPORT_VLB_SYNC 1
#define IDE_DEFAULT_MAX_FAILURES 1
#define ERROR_MAX 8 /* Max read/write errors per sector */
#define ERROR_RESET 3 /* Reset controller every 4th retry */
#define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
struct device;
/* values for ide_request.type */
enum ata_priv_type {
ATA_PRIV_MISC,
ATA_PRIV_TASKFILE,
ATA_PRIV_PC,
ATA_PRIV_SENSE, /* sense request */
ATA_PRIV_PM_SUSPEND, /* suspend request */
ATA_PRIV_PM_RESUME, /* resume request */
};
struct ide_request {
struct scsi_request sreq;
u8 sense[SCSI_SENSE_BUFFERSIZE];
u8 type;
void *special;
};
static inline struct ide_request *ide_req(struct request *rq)
{
return blk_mq_rq_to_pdu(rq);
}
static inline bool ata_misc_request(struct request *rq)
{
return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_MISC;
}
static inline bool ata_taskfile_request(struct request *rq)
{
return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_TASKFILE;
}
static inline bool ata_pc_request(struct request *rq)
{
return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_PC;
}
static inline bool ata_sense_request(struct request *rq)
{
return blk_rq_is_private(rq) && ide_req(rq)->type == ATA_PRIV_SENSE;
}
static inline bool ata_pm_request(struct request *rq)
{
return blk_rq_is_private(rq) &&
(ide_req(rq)->type == ATA_PRIV_PM_SUSPEND ||
ide_req(rq)->type == ATA_PRIV_PM_RESUME);
}
/* Error codes returned in result to the higher part of the driver. */
enum {
IDE_DRV_ERROR_GENERAL = 101,
IDE_DRV_ERROR_FILEMARK = 102,
IDE_DRV_ERROR_EOD = 103,
};
/*
* Definitions for accessing IDE controller registers
*/
#define IDE_NR_PORTS (10)
struct ide_io_ports {
unsigned long data_addr;
union {
unsigned long error_addr; /* read: error */
unsigned long feature_addr; /* write: feature */
};
unsigned long nsect_addr;
unsigned long lbal_addr;
unsigned long lbam_addr;
unsigned long lbah_addr;
unsigned long device_addr;
union {
unsigned long status_addr; /*  read: status  */
unsigned long command_addr; /* write: command */
};
unsigned long ctl_addr;
unsigned long irq_addr;
};
#define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
#define BAD_R_STAT (ATA_BUSY | ATA_ERR)
#define BAD_W_STAT (BAD_R_STAT | ATA_DF)
#define BAD_STAT (BAD_R_STAT | ATA_DRQ)
#define DRIVE_READY (ATA_DRDY | ATA_DSC)
#define BAD_CRC (ATA_ABORTED | ATA_ICRC)
#define SATA_NR_PORTS (3) /* 16 possible ?? */
#define SATA_STATUS_OFFSET (0)
#define SATA_ERROR_OFFSET (1)
#define SATA_CONTROL_OFFSET (2)
/*
* Our Physical Region Descriptor (PRD) table should be large enough
* to handle the biggest I/O request we are likely to see. Since requests
* can have no more than 256 sectors, and since the typical blocksize is
* two or more sectors, we could get by with a limit of 128 entries here for
* the usual worst case. Most requests seem to include some contiguous blocks,
* further reducing the number of table entries required.
*
* The driver reverts to PIO mode for individual requests that exceed
* this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling
* 100% of all crazy scenarios here is not necessary.
*
* As it turns out though, we must allocate a full 4KB page for this,
* so the two PRD tables (ide0 & ide1) will each get half of that,
* allowing each to have about 256 entries (8 bytes each) from this.
*/
#define PRD_BYTES 8
#define PRD_ENTRIES 256
/*
* Some more useful definitions
*/
#define PARTN_BITS 6 /* number of minor dev bits for partitions */
#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
/*
* Timeouts for various operations:
*/
enum {
/* spec allows up to 20ms, but CF cards and SSD drives need more */
WAIT_DRQ = 1 * HZ, /* 1s */
/* some laptops are very slow */
WAIT_READY = 5 * HZ, /* 5s */
/* should be less than 3ms (?), if all ATAPI CD is closed at boot */
WAIT_PIDENTIFY = 10 * HZ, /* 10s */
/* worst case when spinning up */
WAIT_WORSTCASE = 30 * HZ, /* 30s */
/* maximum wait for an IRQ to happen */
WAIT_CMD = 10 * HZ, /* 10s */
/* Some drives require a longer IRQ timeout. */
WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */
/*
* Some drives (for example, Seagate STT3401A Travan) require a very
* long timeout, because they don't return an interrupt or clear their
* BSY bit until after the command completes (even retension commands).
*/
WAIT_TAPE_CMD = 900 * HZ, /* 900s */
/* minimum sleep time */
WAIT_MIN_SLEEP = HZ / 50, /* 20ms */
};
/*
* Op codes for special requests to be handled by ide_special_rq().
* Values should be in the range of 0x20 to 0x3f.
*/
#define REQ_DRIVE_RESET 0x20
#define REQ_DEVSET_EXEC 0x21
#define REQ_PARK_HEADS 0x22
#define REQ_UNPARK_HEADS 0x23
/*
* hwif_chipset_t is used to keep track of the specific hardware
* chipset used by each IDE interface, if known.
*/
enum { ide_unknown, ide_generic, ide_pci,
ide_cmd640, ide_dtc2278, ide_ali14xx,
ide_qd65xx, ide_umc8672, ide_ht6560b,
ide_4drives, ide_pmac, ide_acorn,
ide_au1xxx, ide_palm3710
};
typedef u8 hwif_chipset_t;
/*
* Structure to hold all information about the location of this port
*/
struct ide_hw {
union {
struct ide_io_ports io_ports;
unsigned long io_ports_array[IDE_NR_PORTS];
};
int irq; /* our irq number */
struct device *dev, *parent;
unsigned long config;
};
static inline void ide_std_init_ports(struct ide_hw *hw,
unsigned long io_addr,
unsigned long ctl_addr)
{
unsigned int i;
for (i = 0; i <= 7; i++)
hw->io_ports_array[i] = io_addr++;
hw->io_ports.ctl_addr = ctl_addr;
}
#define MAX_HWIFS 10
/*
* Now for the data we need to maintain per-drive: ide_drive_t
*/
#define ide_scsi 0x21
#define ide_disk 0x20
#define ide_optical 0x7
#define ide_cdrom 0x5
#define ide_tape 0x1
#define ide_floppy 0x0
/*
* Special Driver Flags
*/
enum {
IDE_SFLAG_SET_GEOMETRY = BIT(0),
IDE_SFLAG_RECALIBRATE = BIT(1),
IDE_SFLAG_SET_MULTMODE = BIT(2),
};
/*
* Status returned from various ide_ functions
*/
typedef enum {
ide_stopped, /* no drive operation was started */
ide_started, /* a drive operation was started, handler was set */
} ide_startstop_t;
enum {
IDE_VALID_ERROR = BIT(1),
IDE_VALID_FEATURE = IDE_VALID_ERROR,
IDE_VALID_NSECT = BIT(2),
IDE_VALID_LBAL = BIT(3),
IDE_VALID_LBAM = BIT(4),
IDE_VALID_LBAH = BIT(5),
IDE_VALID_DEVICE = BIT(6),
IDE_VALID_LBA = IDE_VALID_LBAL |
IDE_VALID_LBAM |
IDE_VALID_LBAH,
IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
IDE_VALID_NSECT |
IDE_VALID_LBA,
IDE_VALID_IN_TF = IDE_VALID_NSECT |
IDE_VALID_LBA,
IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
IDE_VALID_IN_HOB = IDE_VALID_ERROR |
IDE_VALID_NSECT |
IDE_VALID_LBA,
};
enum {
IDE_TFLAG_LBA48 = BIT(0),
IDE_TFLAG_WRITE = BIT(1),
IDE_TFLAG_CUSTOM_HANDLER = BIT(2),
IDE_TFLAG_DMA_PIO_FALLBACK = BIT(3),
/* force 16-bit I/O operations */
IDE_TFLAG_IO_16BIT = BIT(4),
/* struct ide_cmd was allocated using kmalloc() */
IDE_TFLAG_DYN = BIT(5),
IDE_TFLAG_FS = BIT(6),
IDE_TFLAG_MULTI_PIO = BIT(7),
IDE_TFLAG_SET_XFER = BIT(8),
};
enum {
IDE_FTFLAG_FLAGGED = BIT(0),
IDE_FTFLAG_SET_IN_FLAGS = BIT(1),
IDE_FTFLAG_OUT_DATA = BIT(2),
IDE_FTFLAG_IN_DATA = BIT(3),
};
struct ide_taskfile {
u8 data; /* 0: data byte (for TASKFILE ioctl) */
union { /* 1: */
u8 error; /* read: error */
u8 feature; /* write: feature */
};
u8 nsect; /* 2: number of sectors */
u8 lbal; /* 3: LBA low */
u8 lbam; /* 4: LBA mid */
u8 lbah; /* 5: LBA high */
u8 device; /* 6: device select */
union { /* 7: */
u8 status; /* read: status */
u8 command; /* write: command */
};
};
struct ide_cmd {
struct ide_taskfile tf;
struct ide_taskfile hob;
struct {
struct {
u8 tf;
u8 hob;
} out, in;
} valid;
u16 tf_flags;
u8 ftf_flags; /* for TASKFILE ioctl */
int protocol;
int sg_nents; /* number of sg entries */
int orig_sg_nents;
int sg_dma_direction; /* DMA transfer direction */
unsigned int nbytes;
unsigned int nleft;
unsigned int last_xfer_len;
struct scatterlist *cursg;
unsigned int cursg_ofs;
struct request *rq; /* copy of request */
};
/* ATAPI packet command flags */
enum {
/* set when an error is considered normal - no retry (ide-tape) */
PC_FLAG_ABORT = BIT(0),
PC_FLAG_SUPPRESS_ERROR = BIT(1),
PC_FLAG_WAIT_FOR_DSC = BIT(2),
PC_FLAG_DMA_OK = BIT(3),
PC_FLAG_DMA_IN_PROGRESS = BIT(4),
PC_FLAG_DMA_ERROR = BIT(5),
PC_FLAG_WRITING = BIT(6),
};
#define ATAPI_WAIT_PC (60 * HZ)
struct ide_atapi_pc {
/* actual packet bytes */
u8 c[12];
/* incremented on each retry */
int retries;
int error;
/* bytes to transfer */
int req_xfer;
/* the corresponding request */
struct request *rq;
unsigned long flags;
/*
* those are more or less driver-specific and some of them are subject
* to change/removal later.
*/
unsigned long timeout;
};
struct ide_devset;
struct ide_driver;
#ifdef CONFIG_BLK_DEV_IDEACPI
struct ide_acpi_drive_link;
struct ide_acpi_hwif_link;
#endif
struct ide_drive_s;
struct ide_disk_ops {
int (*check)(struct ide_drive_s *, const char *);
int (*get_capacity)(struct ide_drive_s *);
void (*unlock_native_capacity)(struct ide_drive_s *);
void (*setup)(struct ide_drive_s *);
void (*flush)(struct ide_drive_s *);
int (*init_media)(struct ide_drive_s *, struct gendisk *);
int (*set_doorlock)(struct ide_drive_s *, struct gendisk *,
int);
ide_startstop_t (*do_request)(struct ide_drive_s *, struct request *,
sector_t);
int (*ioctl)(struct ide_drive_s *, struct block_device *,
fmode_t, unsigned int, unsigned long);
int (*compat_ioctl)(struct ide_drive_s *, struct block_device *,
fmode_t, unsigned int, unsigned long);
};
/* ATAPI device flags */
enum {
IDE_AFLAG_DRQ_INTERRUPT = BIT(0),
/* ide-cd */
/* Drive cannot eject the disc. */
IDE_AFLAG_NO_EJECT = BIT(1),
/* Drive is a pre ATAPI 1.2 drive. */
IDE_AFLAG_PRE_ATAPI12 = BIT(2),
/* TOC addresses are in BCD. */
IDE_AFLAG_TOCADDR_AS_BCD = BIT(3),
/* TOC track numbers are in BCD. */
IDE_AFLAG_TOCTRACKS_AS_BCD = BIT(4),
/* Saved TOC information is current. */
IDE_AFLAG_TOC_VALID = BIT(6),
/* We think that the drive door is locked. */
IDE_AFLAG_DOOR_LOCKED = BIT(7),
/* SET_CD_SPEED command is unsupported. */
IDE_AFLAG_NO_SPEED_SELECT = BIT(8),
IDE_AFLAG_VERTOS_300_SSD = BIT(9),
IDE_AFLAG_VERTOS_600_ESD = BIT(10),
IDE_AFLAG_SANYO_3CD = BIT(11),
IDE_AFLAG_FULL_CAPS_PAGE = BIT(12),
IDE_AFLAG_PLAY_AUDIO_OK = BIT(13),
IDE_AFLAG_LE_SPEED_FIELDS = BIT(14),
/* ide-floppy */
/* Avoid commands not supported in Clik drive */
IDE_AFLAG_CLIK_DRIVE = BIT(15),
/* Requires BH algorithm for packets */
IDE_AFLAG_ZIP_DRIVE = BIT(16),
/* Supports format progress report */
IDE_AFLAG_SRFP = BIT(17),
/* ide-tape */
IDE_AFLAG_IGNORE_DSC = BIT(18),
/* 0 When the tape position is unknown */
IDE_AFLAG_ADDRESS_VALID = BIT(19),
/* Device already opened */
IDE_AFLAG_BUSY = BIT(20),
/* Attempt to auto-detect the current user block size */
IDE_AFLAG_DETECT_BS = BIT(21),
/* Currently on a filemark */
IDE_AFLAG_FILEMARK = BIT(22),
/* 0 = no tape is loaded, so we don't rewind after ejecting */
IDE_AFLAG_MEDIUM_PRESENT = BIT(23),
IDE_AFLAG_NO_AUTOCLOSE = BIT(24),
};
/* device flags */
enum {
/* restore settings after device reset */
IDE_DFLAG_KEEP_SETTINGS = BIT(0),
/* device is using DMA for read/write */
IDE_DFLAG_USING_DMA = BIT(1),
/* okay to unmask other IRQs */
IDE_DFLAG_UNMASK = BIT(2),
/* don't attempt flushes */
IDE_DFLAG_NOFLUSH = BIT(3),
/* DSC overlap */
IDE_DFLAG_DSC_OVERLAP = BIT(4),
/* give potential excess bandwidth */
IDE_DFLAG_NICE1 = BIT(5),
/* device is physically present */
IDE_DFLAG_PRESENT = BIT(6),
/* disable Host Protected Area */
IDE_DFLAG_NOHPA = BIT(7),
/* id read from device (synthetic if not set) */
IDE_DFLAG_ID_READ = BIT(8),
IDE_DFLAG_NOPROBE = BIT(9),
/* need to do check_media_change() */
IDE_DFLAG_REMOVABLE = BIT(10),
IDE_DFLAG_FORCED_GEOM = BIT(12),
/* disallow setting unmask bit */
IDE_DFLAG_NO_UNMASK = BIT(13),
/* disallow enabling 32-bit I/O */
IDE_DFLAG_NO_IO_32BIT = BIT(14),
/* for removable only: door lock/unlock works */
IDE_DFLAG_DOORLOCKING = BIT(15),
/* disallow DMA */
IDE_DFLAG_NODMA = BIT(16),
/* powermanagement told us not to do anything, so sleep nicely */
IDE_DFLAG_BLOCKED = BIT(17),
/* sleeping & sleep field valid */
IDE_DFLAG_SLEEPING = BIT(18),
IDE_DFLAG_POST_RESET = BIT(19),
IDE_DFLAG_UDMA33_WARNED = BIT(20),
IDE_DFLAG_LBA48 = BIT(21),
/* status of write cache */
IDE_DFLAG_WCACHE = BIT(22),
/* used for ignoring ATA_DF */
IDE_DFLAG_NOWERR = BIT(23),
/* retrying in PIO */
IDE_DFLAG_DMA_PIO_RETRY = BIT(24),
IDE_DFLAG_LBA = BIT(25),
/* don't unload heads */
IDE_DFLAG_NO_UNLOAD = BIT(26),
/* heads unloaded, please don't reset port */
IDE_DFLAG_PARKED = BIT(27),
IDE_DFLAG_MEDIA_CHANGED = BIT(28),
/* write protect */
IDE_DFLAG_WP = BIT(29),
IDE_DFLAG_FORMAT_IN_PROGRESS = BIT(30),
IDE_DFLAG_NIEN_QUIRK = BIT(31),
};
struct ide_drive_s {
char name[4]; /* drive name, such as "hda" */
char driver_req[10]; /* requests specific driver */
struct request_queue *queue; /* request queue */
bool (*prep_rq)(struct ide_drive_s *, struct request *);
struct blk_mq_tag_set tag_set;
struct request *rq; /* current request */
void *driver_data; /* extra driver data */
u16 *id; /* identification info */
#ifdef CONFIG_IDE_PROC_FS
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
const struct ide_proc_devset *settings; /* /proc/ide/ drive settings */
#endif
struct hwif_s *hwif; /* actually (ide_hwif_t *) */
const struct ide_disk_ops *disk_ops;
unsigned long dev_flags;
unsigned long sleep; /* sleep until this time */
unsigned long timeout; /* max time to wait for irq */
u8 special_flags; /* special action flags */
u8 select; /* basic drive/head select reg value */
u8 retry_pio; /* retrying dma capable host in pio */
u8 waiting_for_dma; /* dma currently in progress */
u8 dma; /* atapi dma flag */
u8 init_speed; /* transfer rate set at boot */
u8 current_speed; /* current transfer rate set */
u8 desired_speed; /* desired transfer rate set */
u8 pio_mode; /* for ->set_pio_mode _only_ */
u8 dma_mode; /* for ->set_dma_mode _only_ */
u8 dn; /* now wide spread use */
u8 acoustic; /* acoustic management */
u8 media; /* disk, cdrom, tape, floppy, ... */
u8 ready_stat; /* min status value for drive ready */
u8 mult_count; /* current multiple sector setting */
u8 mult_req; /* requested multiple sector setting */
u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
u8 bad_wstat; /* used for ignoring ATA_DF */
u8 head; /* "real" number of heads */
u8 sect; /* "real" sectors per track */
u8 bios_head; /* BIOS/fdisk/LILO number of heads */
u8 bios_sect; /* BIOS/fdisk/LILO sectors per track */
/* delay this long before sending packet command */
u8 pc_delay;
unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
unsigned int cyl; /* "real" number of cyls */
void *drive_data; /* used by set_pio_mode/dev_select() */
unsigned int failures; /* current failure count */
unsigned int max_failures; /* maximum allowed failure count */
u64 probed_capacity;/* initial/native media capacity */
u64 capacity64; /* total number of sectors */
int lun; /* logical unit */
int crc_count; /* crc counter to reduce drive speed */
unsigned long debug_mask; /* debugging levels switch */
#ifdef CONFIG_BLK_DEV_IDEACPI
struct ide_acpi_drive_link *acpidata;
#endif
struct list_head list;
struct device gendev;
struct completion gendev_rel_comp; /* to deal with device release() */
/* current packet command */
struct ide_atapi_pc *pc;
/* last failed packet command */
struct ide_atapi_pc *failed_pc;
/* callback for packet commands */
int (*pc_callback)(struct ide_drive_s *, int);
ide_startstop_t (*irq_handler)(struct ide_drive_s *);
unsigned long atapi_flags;
struct ide_atapi_pc request_sense_pc;
/* current sense rq and buffer */
bool sense_rq_armed;
bool sense_rq_active;
struct request *sense_rq;
struct request_sense sense_data;
/* async sense insertion */
struct work_struct rq_work;
struct list_head rq_list;
};
typedef struct ide_drive_s ide_drive_t;
#define to_ide_device(dev) container_of(dev, ide_drive_t, gendev)
#define to_ide_drv(obj, cont_type) \
container_of(obj, struct cont_type, dev)
#define ide_drv_g(disk, cont_type) \
container_of((disk)->private_data, struct cont_type, driver)
struct ide_port_info;
struct ide_tp_ops {
void (*exec_command)(struct hwif_s *, u8);
u8 (*read_status)(struct hwif_s *);
u8 (*read_altstatus)(struct hwif_s *);
void (*write_devctl)(struct hwif_s *, u8);
void (*dev_select)(ide_drive_t *);
void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
void (*input_data)(ide_drive_t *, struct ide_cmd *,
void *, unsigned int);
void (*output_data)(ide_drive_t *, struct ide_cmd *,
void *, unsigned int);
};
extern const struct ide_tp_ops default_tp_ops;
/**
* struct ide_port_ops - IDE port operations
*
* @init_dev: host specific initialization of a device
* @set_pio_mode: routine to program host for PIO mode
* @set_dma_mode: routine to program host for DMA mode
* @reset_poll: chipset polling based on hba specifics
* @pre_reset: chipset specific changes to default for device-hba resets
* @resetproc: routine to reset controller after a disk reset
* @maskproc: special host masking for drive selection
* @quirkproc: check host's drive quirk list
* @clear_irq: clear IRQ
*
* @mdma_filter: filter MDMA modes
* @udma_filter: filter UDMA modes
*
* @cable_detect: detect cable type
*/
struct ide_port_ops {
void (*init_dev)(ide_drive_t *);
void (*set_pio_mode)(struct hwif_s *, ide_drive_t *);
void (*set_dma_mode)(struct hwif_s *, ide_drive_t *);
blk_status_t (*reset_poll)(ide_drive_t *);
void (*pre_reset)(ide_drive_t *);
void (*resetproc)(ide_drive_t *);
void (*maskproc)(ide_drive_t *, int);
void (*quirkproc)(ide_drive_t *);
void (*clear_irq)(ide_drive_t *);
int (*test_irq)(struct hwif_s *);
u8 (*mdma_filter)(ide_drive_t *);
u8 (*udma_filter)(ide_drive_t *);
u8 (*cable_detect)(struct hwif_s *);
};
struct ide_dma_ops {
void (*dma_host_set)(struct ide_drive_s *, int);
int (*dma_setup)(struct ide_drive_s *, struct ide_cmd *);
void (*dma_start)(struct ide_drive_s *);
int (*dma_end)(struct ide_drive_s *);
int (*dma_test_irq)(struct ide_drive_s *);
void (*dma_lost_irq)(struct ide_drive_s *);
/* below ones are optional */
int (*dma_check)(struct ide_drive_s *, struct ide_cmd *);
int (*dma_timer_expiry)(struct ide_drive_s *);
void (*dma_clear)(struct ide_drive_s *);
/*
* The following method is optional and only required to be
* implemented for the SFF-8038i compatible controllers.
*/
u8 (*dma_sff_read_status)(struct hwif_s *);
};
enum {
IDE_PFLAG_PROBING = BIT(0),
};
struct ide_host;
typedef struct hwif_s {
struct hwif_s *mate; /* other hwif from same PCI chip */
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
struct ide_host *host;
char name[6]; /* name of interface, eg. "ide0" */
struct ide_io_ports io_ports;
unsigned long sata_scr[SATA_NR_PORTS];
ide_drive_t *devices[MAX_DRIVES + 1];
unsigned long port_flags;
u8 major; /* our major number */
u8 index; /* 0 for ide0; 1 for ide1; ... */
u8 channel; /* for dual-port chips: 0=primary, 1=secondary */
u32 host_flags;
u8 pio_mask;
u8 ultra_mask;
u8 mwdma_mask;
u8 swdma_mask;
u8 cbl; /* cable type */
hwif_chipset_t chipset; /* sub-module for tuning.. */
struct device *dev;
void (*rw_disk)(ide_drive_t *, struct request *);
const struct ide_tp_ops *tp_ops;
const struct ide_port_ops *port_ops;
const struct ide_dma_ops *dma_ops;
/* dma physical region descriptor table (cpu view) */
unsigned int *dmatable_cpu;
/* dma physical region descriptor table (dma view) */
dma_addr_t dmatable_dma;
/* maximum number of PRD table entries */
int prd_max_nents;
/* PRD entry size in bytes */
int prd_ent_size;
/* Scatter-gather list used to build the above */
struct scatterlist *sg_table;
int sg_max_nents; /* Maximum number of entries in it */
struct ide_cmd cmd; /* current command */
int rqsize; /* max sectors per request */
int irq; /* our irq number */
unsigned long dma_base; /* base addr for dma ports */
unsigned long config_data; /* for use by chipset-specific code */
unsigned long select_data; /* for use by chipset-specific code */
unsigned long extra_base; /* extra addr for dma ports */
unsigned extra_ports; /* number of extra dma ports */
unsigned present : 1; /* this interface exists */
unsigned busy : 1; /* serializes devices on a port */
struct device gendev;
struct device *portdev;
struct completion gendev_rel_comp; /* To deal with device release() */
void *hwif_data; /* extra hwif data */
#ifdef CONFIG_BLK_DEV_IDEACPI
struct ide_acpi_hwif_link *acpidata;
#endif
/* IRQ handler, if active */
ide_startstop_t (*handler)(ide_drive_t *);
/* BOOL: polling active & poll_timeout field valid */
unsigned int polling : 1;
/* current drive */
ide_drive_t *cur_dev;
/* current request */
struct request *rq;
/* failsafe timer */
struct timer_list timer;
/* timeout value during long polls */
unsigned long poll_timeout;
/* queried upon timeouts */
int (*expiry)(ide_drive_t *);
int req_gen;
int req_gen_timer;
spinlock_t lock;
} ____cacheline_internodealigned_in_smp ide_hwif_t;
#define MAX_HOST_PORTS 4
struct ide_host {
ide_hwif_t *ports[MAX_HOST_PORTS + 1];
unsigned int n_ports;
struct device *dev[2];
int (*init_chipset)(struct pci_dev *);
void (*get_lock)(irq_handler_t, void *);
void (*release_lock)(void);
irq_handler_t irq_handler;
unsigned long host_flags;
int irq_flags;
void *host_priv;
ide_hwif_t *cur_port; /* for hosts requiring serialization */
/* used for hosts requiring serialization */
volatile unsigned long host_busy;
};
#define IDE_HOST_BUSY 0
/*
* internal ide interrupt handler type
*/
typedef ide_startstop_t (ide_handler_t)(ide_drive_t *);
typedef int (ide_expiry_t)(ide_drive_t *);
/* used by ide-cd, ide-floppy, etc. */
typedef void (xfer_func_t)(ide_drive_t *, struct ide_cmd *, void *, unsigned);
extern struct mutex ide_setting_mtx;
/*
* configurable drive settings
*/
#define DS_SYNC BIT(0)
struct ide_devset {
int (*get)(ide_drive_t *);
int (*set)(ide_drive_t *, int);
unsigned int flags;
};
#define __DEVSET(_flags, _get, _set) { \
.flags = _flags, \
.get = _get, \
.set = _set, \
}
#define ide_devset_get(name, field) \
static int get_##name(ide_drive_t *drive) \
{ \
return drive->field; \
}
#define ide_devset_set(name, field) \
static int set_##name(ide_drive_t *drive, int arg) \
{ \
drive->field = arg; \
return 0; \
}
#define ide_devset_get_flag(name, flag) \
static int get_##name(ide_drive_t *drive) \
{ \
return !!(drive->dev_flags & flag); \
}
#define ide_devset_set_flag(name, flag) \
static int set_##name(ide_drive_t *drive, int arg) \
{ \
if (arg) \
drive->dev_flags |= flag; \
else \
drive->dev_flags &= ~flag; \
return 0; \
}
#define __IDE_DEVSET(_name, _flags, _get, _set) \
const struct ide_devset ide_devset_##_name = \
__DEVSET(_flags, _get, _set)
#define IDE_DEVSET(_name, _flags, _get, _set) \
static __IDE_DEVSET(_name, _flags, _get, _set)
#define ide_devset_rw(_name, _func) \
IDE_DEVSET(_name, 0, get_##_func, set_##_func)
#define ide_devset_w(_name, _func) \
IDE_DEVSET(_name, 0, NULL, set_##_func)
#define ide_ext_devset_rw(_name, _func) \
__IDE_DEVSET(_name, 0, get_##_func, set_##_func)
#define ide_ext_devset_rw_sync(_name, _func) \
__IDE_DEVSET(_name, DS_SYNC, get_##_func, set_##_func)
#define ide_decl_devset(_name) \
extern const struct ide_devset ide_devset_##_name
ide_decl_devset(io_32bit);
ide_decl_devset(keepsettings);
ide_decl_devset(pio_mode);
ide_decl_devset(unmaskirq);
ide_decl_devset(using_dma);
#ifdef CONFIG_IDE_PROC_FS
/*
* /proc/ide interface
*/
#define ide_devset_rw_field(_name, _field) \
ide_devset_get(_name, _field); \
ide_devset_set(_name, _field); \
IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
#define ide_devset_ro_field(_name, _field) \
ide_devset_get(_name, _field); \
IDE_DEVSET(_name, 0, get_##_name, NULL)
#define ide_devset_rw_flag(_name, _field) \
ide_devset_get_flag(_name, _field); \
ide_devset_set_flag(_name, _field); \
IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
struct ide_proc_devset {
const char *name;
const struct ide_devset *setting;
int min, max;
int (*mulf)(ide_drive_t *);
int (*divf)(ide_drive_t *);
};
#define __IDE_PROC_DEVSET(_name, _min, _max, _mulf, _divf) { \
.name = __stringify(_name), \
.setting = &ide_devset_##_name, \
.min = _min, \
.max = _max, \
.mulf = _mulf, \
.divf = _divf, \
}
#define IDE_PROC_DEVSET(_name, _min, _max) \
__IDE_PROC_DEVSET(_name, _min, _max, NULL, NULL)
typedef struct {
const char *name;
umode_t mode;
int (*show)(struct seq_file *, void *);
} ide_proc_entry_t;
void proc_ide_create(void);
void proc_ide_destroy(void);
void ide_proc_register_port(ide_hwif_t *);
void ide_proc_port_register_devices(ide_hwif_t *);
void ide_proc_unregister_device(ide_drive_t *);
void ide_proc_unregister_port(ide_hwif_t *);
void ide_proc_register_driver(ide_drive_t *, struct ide_driver *);
void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
int ide_capacity_proc_show(struct seq_file *m, void *v);
int ide_geometry_proc_show(struct seq_file *m, void *v);
#else
static inline void proc_ide_create(void) { ; }
static inline void proc_ide_destroy(void) { ; }
static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
static inline void ide_proc_register_driver(ide_drive_t *drive,
struct ide_driver *driver) { ; }
static inline void ide_proc_unregister_driver(ide_drive_t *drive,
struct ide_driver *driver) { ; }
#endif
enum {
/* enter/exit functions */
IDE_DBG_FUNC = BIT(0),
/* sense key/asc handling */
IDE_DBG_SENSE = BIT(1),
/* packet commands handling */
IDE_DBG_PC = BIT(2),
/* request handling */
IDE_DBG_RQ = BIT(3),
/* driver probing/setup */
IDE_DBG_PROBE = BIT(4),
};
/* DRV_NAME has to be defined in the driver before using the macro below */
#define __ide_debug_log(lvl, fmt, args...) \
{ \
if (unlikely(drive->debug_mask & lvl)) \
printk(KERN_INFO DRV_NAME ": %s: " fmt "\n", \
__func__, ## args); \
}
/*
* Power Management state machine (rq->pm->pm_step).
*
* For each step, the core calls ide_start_power_step() first.
* This can return:
* - ide_stopped : In this case, the core calls us back again unless
* step have been set to ide_power_state_completed.
* - ide_started : In this case, the channel is left busy until an
* async event (interrupt) occurs.
* Typically, ide_start_power_step() will issue a taskfile request with
* do_rw_taskfile().
*
* Upon reception of the interrupt, the core will call ide_complete_power_step()
* with the error code if any. This routine should update the step value
* and return. It should not start a new request. The core will call
* ide_start_power_step() for the new step value, unless step have been
* set to IDE_PM_COMPLETED.
*/
enum {
IDE_PM_START_SUSPEND,
IDE_PM_FLUSH_CACHE = IDE_PM_START_SUSPEND,
IDE_PM_STANDBY,
IDE_PM_START_RESUME,
IDE_PM_RESTORE_PIO = IDE_PM_START_RESUME,
IDE_PM_IDLE,
IDE_PM_RESTORE_DMA,
IDE_PM_COMPLETED,
};
int generic_ide_suspend(struct device *, pm_message_t);
int generic_ide_resume(struct device *);
void ide_complete_power_step(ide_drive_t *, struct request *);
ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
void ide_complete_pm_rq(ide_drive_t *, struct request *);
void ide_check_pm_state(ide_drive_t *, struct request *);
/*
* Subdrivers support.
*
* The gendriver.owner field should be set to the module owner of this driver.
* The gendriver.name field should be set to the name of this driver
*/
struct ide_driver {
const char *version;
ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
struct device_driver gen_driver;
int (*probe)(ide_drive_t *);
void (*remove)(ide_drive_t *);
void (*resume)(ide_drive_t *);
void (*shutdown)(ide_drive_t *);
#ifdef CONFIG_IDE_PROC_FS
ide_proc_entry_t * (*proc_entries)(ide_drive_t *);
const struct ide_proc_devset * (*proc_devsets)(ide_drive_t *);
#endif
};
#define to_ide_driver(drv) container_of(drv, struct ide_driver, gen_driver)
int ide_device_get(ide_drive_t *);
void ide_device_put(ide_drive_t *);
struct ide_ioctl_devset {
unsigned int get_ioctl;
unsigned int set_ioctl;
const struct ide_devset *setting;
};
int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int,
unsigned long, const struct ide_ioctl_devset *);
int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned long);
extern int ide_vlb_clk;
extern int ide_pci_clk;
int ide_end_rq(ide_drive_t *, struct request *, blk_status_t, unsigned int);
void ide_kill_rq(ide_drive_t *, struct request *);
void ide_insert_request_head(ide_drive_t *, struct request *);
void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
void ide_execute_command(ide_drive_t *, struct ide_cmd *, ide_handler_t *,
unsigned int);
void ide_pad_transfer(ide_drive_t *, int, int);
ide_startstop_t ide_error(ide_drive_t *, const char *, u8);
void ide_fix_driveid(u16 *);
extern void ide_fixstring(u8 *, const int, const int);
int ide_busy_sleep(ide_drive_t *, unsigned long, int);
int __ide_wait_stat(ide_drive_t *, u8, u8, unsigned long, u8 *);
int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
ide_startstop_t ide_do_park_unpark(ide_drive_t *, struct request *);
ide_startstop_t ide_do_devset(ide_drive_t *, struct request *);
extern ide_startstop_t ide_do_reset (ide_drive_t *);
extern int ide_devset_execute(ide_drive_t *drive,
const struct ide_devset *setting, int arg);
void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
int ide_complete_rq(ide_drive_t *, blk_status_t, unsigned int);
void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
void ide_tf_dump(const char *, struct ide_cmd *);
void ide_exec_command(ide_hwif_t *, u8);
u8 ide_read_status(ide_hwif_t *);
u8 ide_read_altstatus(ide_hwif_t *);
void ide_write_devctl(ide_hwif_t *, u8);
void ide_dev_select(ide_drive_t *);
void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
void SELECT_MASK(ide_drive_t *, int);
u8 ide_read_error(ide_drive_t *);
void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
int ide_check_atapi_device(ide_drive_t *, const char *);
void ide_init_pc(struct ide_atapi_pc *);
/* Disk head parking */
extern wait_queue_head_t ide_park_wq;
ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
char *buf);
ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t len);
/*
* Special requests for ide-tape block device strategy routine.
*
* In order to service a character device command, we add special requests to
* the tail of our block device request queue and wait for their completion.
*/
enum {
REQ_IDETAPE_PC1 = BIT(0), /* packet command (first stage) */
REQ_IDETAPE_PC2 = BIT(1), /* packet command (second stage) */
REQ_IDETAPE_READ = BIT(2),
REQ_IDETAPE_WRITE = BIT(3),
};
int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
void *, unsigned int);
int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
int ide_set_media_lock(ide_drive_t *, struct gendisk *, int);
void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
void ide_retry_pc(ide_drive_t *drive);
void ide_prep_sense(ide_drive_t *drive, struct request *rq);
int ide_queue_sense_rq(ide_drive_t *drive, void *special);
int ide_cd_expiry(ide_drive_t *);
int ide_cd_get_xferlen(struct request *);
ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_cmd *);
ide_startstop_t do_rw_taskfile(ide_drive_t *, struct ide_cmd *);
void ide_pio_bytes(ide_drive_t *, struct ide_cmd *, unsigned int, unsigned int);
void ide_finish_cmd(ide_drive_t *, struct ide_cmd *, u8);
int ide_raw_taskfile(ide_drive_t *, struct ide_cmd *, u8 *, u16);
int ide_no_data_taskfile(ide_drive_t *, struct ide_cmd *);
int ide_taskfile_ioctl(ide_drive_t *, unsigned long);
int ide_dev_read_id(ide_drive_t *, u8, u16 *, int);
extern int ide_driveid_update(ide_drive_t *);
extern int ide_config_drive_speed(ide_drive_t *, u8);
extern u8 eighty_ninty_three (ide_drive_t *);
extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *);
extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout);
extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
extern void ide_timer_expiry(struct timer_list *t);
extern irqreturn_t ide_intr(int irq, void *dev_id);
extern blk_status_t ide_queue_rq(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
extern blk_status_t ide_issue_rq(ide_drive_t *, struct request *, bool);
extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
void ide_init_disk(struct gendisk *, ide_drive_t *);
#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name);
#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME)
#else
#define ide_pci_register_driver(d) pci_register_driver(d)
#endif
static inline int ide_pci_is_in_compatibility_mode(struct pci_dev *dev)
{
if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 5) != 5)
return 1;
return 0;
}
void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *,
struct ide_hw *, struct ide_hw **);
void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
int ide_pci_set_master(struct pci_dev *, const char *);
unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *);
int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *);
int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *);
#else
static inline int ide_hwif_setup_dma(ide_hwif_t *hwif,
const struct ide_port_info *d)
{
return -EINVAL;
}
#endif
struct ide_pci_enablebit {
u8 reg; /* byte pci reg holding the enable-bit */
u8 mask; /* mask to isolate the enable-bit */
u8 val; /* value of masked reg when "enabled" */
};
enum {
/* Uses ISA control ports not PCI ones. */
IDE_HFLAG_ISA_PORTS = BIT(0),
/* single port device */
IDE_HFLAG_SINGLE = BIT(1),
/* don't use legacy PIO blacklist */
IDE_HFLAG_PIO_NO_BLACKLIST = BIT(2),
/* set for the second port of QD65xx */
IDE_HFLAG_QD_2ND_PORT = BIT(3),
/* use PIO8/9 for prefetch off/on */
IDE_HFLAG_ABUSE_PREFETCH = BIT(4),
/* use PIO6/7 for fast-devsel off/on */
IDE_HFLAG_ABUSE_FAST_DEVSEL = BIT(5),
/* use 100-102 and 200-202 PIO values to set DMA modes */
IDE_HFLAG_ABUSE_DMA_MODES = BIT(6),
/*
* keep DMA setting when programming PIO mode, may be used only
* for hosts which have separate PIO and DMA timings (ie. PMAC)
*/
IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = BIT(7),
/* program host for the transfer mode after programming device */
IDE_HFLAG_POST_SET_MODE = BIT(8),
/* don't program host/device for the transfer mode ("smart" hosts) */
IDE_HFLAG_NO_SET_MODE = BIT(9),
/* trust BIOS for programming chipset/device for DMA */
IDE_HFLAG_TRUST_BIOS_FOR_DMA = BIT(10),
/* host is CS5510/CS5520 */
IDE_HFLAG_CS5520 = BIT(11),
/* ATAPI DMA is unsupported */
IDE_HFLAG_NO_ATAPI_DMA = BIT(12),
/* set if host is a "non-bootable" controller */
IDE_HFLAG_NON_BOOTABLE = BIT(13),
/* host doesn't support DMA */
IDE_HFLAG_NO_DMA = BIT(14),
/* check if host is PCI IDE device before allowing DMA */
IDE_HFLAG_NO_AUTODMA = BIT(15),
/* host uses MMIO */
IDE_HFLAG_MMIO = BIT(16),
/* no LBA48 */
IDE_HFLAG_NO_LBA48 = BIT(17),
/* no LBA48 DMA */
IDE_HFLAG_NO_LBA48_DMA = BIT(18),
/* data FIFO is cleared by an error */
IDE_HFLAG_ERROR_STOPS_FIFO = BIT(19),
/* serialize ports */
IDE_HFLAG_SERIALIZE = BIT(20),
/* host is DTC2278 */
IDE_HFLAG_DTC2278 = BIT(21),
/* 4 devices on a single set of I/O ports */
IDE_HFLAG_4DRIVES = BIT(22),
/* host is TRM290 */
IDE_HFLAG_TRM290 = BIT(23),
/* use 32-bit I/O ops */
IDE_HFLAG_IO_32BIT = BIT(24),
/* unmask IRQs */
IDE_HFLAG_UNMASK_IRQS = BIT(25),
IDE_HFLAG_BROKEN_ALTSTATUS = BIT(26),
/* serialize ports if DMA is possible (for sl82c105) */
IDE_HFLAG_SERIALIZE_DMA = BIT(27),
/* force host out of "simplex" mode */
IDE_HFLAG_CLEAR_SIMPLEX = BIT(28),
/* DSC overlap is unsupported */
IDE_HFLAG_NO_DSC = BIT(29),
/* never use 32-bit I/O ops */
IDE_HFLAG_NO_IO_32BIT = BIT(30),
/* never unmask IRQs */
IDE_HFLAG_NO_UNMASK_IRQS = BIT(31),
};
#ifdef CONFIG_BLK_DEV_OFFBOARD
# define IDE_HFLAG_OFF_BOARD 0
#else
# define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE
#endif
struct ide_port_info {
char *name;
int (*init_chipset)(struct pci_dev *);
void (*get_lock)(irq_handler_t, void *);
void (*release_lock)(void);
void (*init_iops)(ide_hwif_t *);
void (*init_hwif)(ide_hwif_t *);
int (*init_dma)(ide_hwif_t *,
const struct ide_port_info *);
const struct ide_tp_ops *tp_ops;
const struct ide_port_ops *port_ops;
const struct ide_dma_ops *dma_ops;
struct ide_pci_enablebit enablebits[2];
hwif_chipset_t chipset;
u16 max_sectors; /* if < than the default one */
u32 host_flags;
int irq_flags;
u8 pio_mask;
u8 swdma_mask;
u8 mwdma_mask;
u8 udma_mask;
};
/*
* State information carried for REQ_TYPE_ATA_PM_SUSPEND and REQ_TYPE_ATA_PM_RESUME
* requests.
*/
struct ide_pm_state {
/* PM state machine step value, currently driver specific */
int pm_step;
/* requested PM state value (S1, S2, S3, S4, ...) */
u32 pm_state;
void* data; /* for driver use */
};
int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *);
int ide_pci_init_two(struct pci_dev *, struct pci_dev *,
const struct ide_port_info *, void *);
void ide_pci_remove(struct pci_dev *);
#ifdef CONFIG_PM
int ide_pci_suspend(struct pci_dev *, pm_message_t);
int ide_pci_resume(struct pci_dev *);
#else
#define ide_pci_suspend NULL
#define ide_pci_resume NULL
#endif
void ide_map_sg(ide_drive_t *, struct ide_cmd *);
void ide_init_sg_cmd(struct ide_cmd *, unsigned int);
#define BAD_DMA_DRIVE 0
#define GOOD_DMA_DRIVE 1
struct drive_list_entry {
const char *id_model;
const char *id_firmware;
};
int ide_in_drive_list(u16 *, const struct drive_list_entry *);
#ifdef CONFIG_BLK_DEV_IDEDMA
int ide_dma_good_drive(ide_drive_t *);
int __ide_dma_bad_drive(ide_drive_t *);
u8 ide_find_dma_mode(ide_drive_t *, u8);
static inline u8 ide_max_dma_mode(ide_drive_t *drive)
{
return ide_find_dma_mode(drive, XFER_UDMA_6);
}
void ide_dma_off_quietly(ide_drive_t *);
void ide_dma_off(ide_drive_t *);
void ide_dma_on(ide_drive_t *);
int ide_set_dma(ide_drive_t *);
void ide_check_dma_crc(ide_drive_t *);
ide_startstop_t ide_dma_intr(ide_drive_t *);
int ide_allocate_dma_engine(ide_hwif_t *);
void ide_release_dma_engine(ide_hwif_t *);
int ide_dma_prepare(ide_drive_t *, struct ide_cmd *);
void ide_dma_unmap_sg(ide_drive_t *, struct ide_cmd *);
#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
int config_drive_for_dma(ide_drive_t *);
int ide_build_dmatable(ide_drive_t *, struct ide_cmd *);
void ide_dma_host_set(ide_drive_t *, int);
int ide_dma_setup(ide_drive_t *, struct ide_cmd *);
extern void ide_dma_start(ide_drive_t *);
int ide_dma_end(ide_drive_t *);
int ide_dma_test_irq(ide_drive_t *);
int ide_dma_sff_timer_expiry(ide_drive_t *);
u8 ide_dma_sff_read_status(ide_hwif_t *);
extern const struct ide_dma_ops sff_dma_ops;
#else
static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }
#endif /* CONFIG_BLK_DEV_IDEDMA_SFF */
void ide_dma_lost_irq(ide_drive_t *);
ide_startstop_t ide_dma_timeout_retry(ide_drive_t *, int);
#else
static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; }
static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; }
static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; }
static inline void ide_dma_off(ide_drive_t *drive) { ; }
static inline void ide_dma_on(ide_drive_t *drive) { ; }
static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
static inline void ide_check_dma_crc(ide_drive_t *drive) { ; }
static inline ide_startstop_t ide_dma_intr(ide_drive_t *drive) { return ide_stopped; }
static inline ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error) { return ide_stopped; }
static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
static inline int ide_dma_prepare(ide_drive_t *drive,
struct ide_cmd *cmd) { return 1; }
static inline void ide_dma_unmap_sg(ide_drive_t *drive,
struct ide_cmd *cmd) { ; }
#endif /* CONFIG_BLK_DEV_IDEDMA */
#ifdef CONFIG_BLK_DEV_IDEACPI
int ide_acpi_init(void);
bool ide_port_acpi(ide_hwif_t *hwif);
extern int ide_acpi_exec_tfs(ide_drive_t *drive);
extern void ide_acpi_get_timing(ide_hwif_t *hwif);
extern void ide_acpi_push_timing(ide_hwif_t *hwif);
void ide_acpi_init_port(ide_hwif_t *);
void ide_acpi_port_init_devices(ide_hwif_t *);
extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
#else
static inline int ide_acpi_init(void) { return 0; }
static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
static inline void ide_acpi_init_port(ide_hwif_t *hwif) { ; }
static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; }
static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
#endif
void ide_register_region(struct gendisk *);
void ide_unregister_region(struct gendisk *);
void ide_check_nien_quirk_list(ide_drive_t *);
void ide_undecoded_slave(ide_drive_t *);
void ide_port_apply_params(ide_hwif_t *);
int ide_sysfs_register_port(ide_hwif_t *);
struct ide_host *ide_host_alloc(const struct ide_port_info *, struct ide_hw **,
unsigned int);
void ide_host_free(struct ide_host *);
int ide_host_register(struct ide_host *, const struct ide_port_info *,
struct ide_hw **);
int ide_host_add(const struct ide_port_info *, struct ide_hw **, unsigned int,
struct ide_host **);
void ide_host_remove(struct ide_host *);
int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
void ide_port_unregister_devices(ide_hwif_t *);
void ide_port_scan(ide_hwif_t *);
static inline void *ide_get_hwifdata (ide_hwif_t * hwif)
{
return hwif->hwif_data;
}
static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
{
hwif->hwif_data = data;
}
u64 ide_get_lba_addr(struct ide_cmd *, int);
u8 ide_dump_status(ide_drive_t *, const char *, u8);
struct ide_timing {
u8 mode;
u8 setup; /* t1 */
u16 act8b; /* t2 for 8-bit io */
u16 rec8b; /* t2i for 8-bit io */
u16 cyc8b; /* t0 for 8-bit io */
u16 active; /* t2 or tD */
u16 recover; /* t2i or tK */
u16 cycle; /* t0 */
u16 udma; /* t2CYCTYP/2 */
};
enum {
IDE_TIMING_SETUP = BIT(0),
IDE_TIMING_ACT8B = BIT(1),
IDE_TIMING_REC8B = BIT(2),
IDE_TIMING_CYC8B = BIT(3),
IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
IDE_TIMING_CYC8B,
IDE_TIMING_ACTIVE = BIT(4),
IDE_TIMING_RECOVER = BIT(5),
IDE_TIMING_CYCLE = BIT(6),
IDE_TIMING_UDMA = BIT(7),
IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT |
IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER |
IDE_TIMING_CYCLE | IDE_TIMING_UDMA,
};
struct ide_timing *ide_timing_find_mode(u8);
u16 ide_pio_cycle_time(ide_drive_t *, u8);
void ide_timing_merge(struct ide_timing *, struct ide_timing *,
struct ide_timing *, unsigned int);
int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int);
#ifdef CONFIG_IDE_XFER_MODE
int ide_scan_pio_blacklist(char *);
const char *ide_xfer_verbose(u8);
int ide_pio_need_iordy(ide_drive_t *, const u8);
int ide_set_pio_mode(ide_drive_t *, u8);
int ide_set_dma_mode(ide_drive_t *, u8);
void ide_set_pio(ide_drive_t *, u8);
int ide_set_xfer_rate(ide_drive_t *, u8);
#else
static inline void ide_set_pio(ide_drive_t *drive, u8 pio) { ; }
static inline int ide_set_xfer_rate(ide_drive_t *drive, u8 rate) { return -1; }
#endif
static inline void ide_set_max_pio(ide_drive_t *drive)
{
ide_set_pio(drive, 255);
}
char *ide_media_string(ide_drive_t *);
extern const struct attribute_group *ide_dev_groups[];
extern struct bus_type ide_bus_type;
extern struct class *ide_port_class;
static inline void ide_dump_identify(u8 *id)
{
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0);
}
static inline int hwif_to_node(ide_hwif_t *hwif)
{
return hwif->dev ? dev_to_node(hwif->dev) : -1;
}
static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
{
ide_drive_t *peer = drive->hwif->devices[(drive->dn ^ 1) & 1];
return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
}
static inline void *ide_get_drivedata(ide_drive_t *drive)
{
return drive->drive_data;
}
static inline void ide_set_drivedata(ide_drive_t *drive, void *data)
{
drive->drive_data = data;
}
#define ide_port_for_each_dev(i, dev, port) \
for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
#define ide_port_for_each_present_dev(i, dev, port) \
for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
#define ide_host_for_each_port(i, port, host) \
for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
#endif /* _IDE_H */
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