![Elias Oltmanns](/assets/img/avatar_default.png)
On user request (through sysfs), the IDLE IMMEDIATE command with UNLOAD FEATURE as specified in ATA-7 is issued to the device and processing of the request queue is stopped thereafter until the specified timeout expires or user space asks to resume normal operation. This is supposed to prevent the heads of a hard drive from accidentally crashing onto the platter when a heavy shock is anticipated (like a falling laptop expected to hit the floor). Port resets are deferred whenever a device on that port is in the parked state. v3: Elias Oltmanns <eo@nebensachen.de> wrote: [...] > >> 1. Make sure that no negative value is being passed to > >> jiffies_to_msecs() in ide_park_show(). > >> 2. Drop the superfluous variable hwif in ide_special_rq(). > >> 3. Skip initialisation of task and tf in ide_special_rq() if we are not > >> handling a (un)park request. > > > > Well, #3 should have been done differently because we donn't want to > > check for REQ_(UN)?PARK_HEADS more often than is necessary. > > While preparing the backport to 2.6.27, it has just occurred to me that > we need to clear the IDE_DFLAG_PARKED flag in ide_disk_pre_reset() > because this flag must not be set after *any* sort of access to the > device. v4: Fix a memory leak due to a missing blk_put_request() in issue_park_cmd(). Additionally, we should plug the queue when enqueueing the unpark request because there is no guarantee that the park timeout has not expired by then. Even though the chance for that to happen is very slim, the request might end up hanging in the queue until the next I/O operation is queued up. While at it, clean up the code a little: - make issue_park_cmd() a function of type void since nobody cares for the return value anyway; - use blk_start_queueing() instead of __blk_run_queue() since we don't have to worry about recursion; - remove a superfluous pointer deference in task_no_data_intr(). Signed-off-by: Elias Oltmanns <eo@nebensachen.de> Cc: Jeff Garzik <jeff@garzik.org>, Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Tejun Heo <htejun@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
1622 lines
46 KiB
C
1622 lines
46 KiB
C
#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/blkdev.h>
|
||
#include <linux/proc_fs.h>
|
||
#include <linux/interrupt.h>
|
||
#include <linux/bitops.h>
|
||
#include <linux/bio.h>
|
||
#include <linux/device.h>
|
||
#include <linux/pci.h>
|
||
#include <linux/completion.h>
|
||
#include <linux/pm.h>
|
||
#ifdef CONFIG_BLK_DEV_IDEACPI
|
||
#include <acpi/acpi.h>
|
||
#endif
|
||
#include <asm/byteorder.h>
|
||
#include <asm/system.h>
|
||
#include <asm/io.h>
|
||
#include <asm/mutex.h>
|
||
|
||
#if defined(CONFIG_CRIS) || defined(CONFIG_FRV)
|
||
# define SUPPORT_VLB_SYNC 0
|
||
#else
|
||
# define SUPPORT_VLB_SYNC 1
|
||
#endif
|
||
|
||
/*
|
||
* Used to indicate "no IRQ", should be a value that cannot be an IRQ
|
||
* number.
|
||
*/
|
||
|
||
#define IDE_NO_IRQ (-1)
|
||
|
||
typedef unsigned char byte; /* used everywhere */
|
||
|
||
/*
|
||
* Probably not wise to fiddle with these
|
||
*/
|
||
#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 */
|
||
|
||
#define HWIF(drive) ((ide_hwif_t *)((drive)->hwif))
|
||
#define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup))
|
||
|
||
/*
|
||
* 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 */
|
||
#define SECTOR_SIZE 512
|
||
|
||
#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
|
||
|
||
/*
|
||
* Timeouts for various operations:
|
||
*/
|
||
enum {
|
||
/* spec allows up to 20ms */
|
||
WAIT_DRQ = HZ / 10, /* 100ms */
|
||
/* 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
|
||
|
||
/*
|
||
* Check for an interrupt and acknowledge the interrupt status
|
||
*/
|
||
struct hwif_s;
|
||
typedef int (ide_ack_intr_t)(struct hwif_s *);
|
||
|
||
/*
|
||
* 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_rz1000, ide_trm290,
|
||
ide_cmd646, ide_cy82c693, 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
|
||
*/
|
||
typedef struct hw_regs_s {
|
||
union {
|
||
struct ide_io_ports io_ports;
|
||
unsigned long io_ports_array[IDE_NR_PORTS];
|
||
};
|
||
|
||
int irq; /* our irq number */
|
||
ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
|
||
hwif_chipset_t chipset;
|
||
struct device *dev, *parent;
|
||
unsigned long config;
|
||
} hw_regs_t;
|
||
|
||
void ide_init_port_data(struct hwif_s *, unsigned int);
|
||
void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
|
||
|
||
static inline void ide_std_init_ports(hw_regs_t *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;
|
||
}
|
||
|
||
/* for IDE PCI controllers in legacy mode, temporary */
|
||
static inline int __ide_default_irq(unsigned long base)
|
||
{
|
||
switch (base) {
|
||
#ifdef CONFIG_IA64
|
||
case 0x1f0: return isa_irq_to_vector(14);
|
||
case 0x170: return isa_irq_to_vector(15);
|
||
#else
|
||
case 0x1f0: return 14;
|
||
case 0x170: return 15;
|
||
#endif
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \
|
||
defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \
|
||
|| defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64)
|
||
#include <asm/ide.h>
|
||
#else
|
||
#include <asm-generic/ide_iops.h>
|
||
#endif
|
||
|
||
#define MAX_HWIFS 10
|
||
|
||
/* Currently only m68k, apus and m8xx need it */
|
||
#ifndef IDE_ARCH_ACK_INTR
|
||
# define ide_ack_intr(hwif) (1)
|
||
#endif
|
||
|
||
/* Currently only Atari needs it */
|
||
#ifndef IDE_ARCH_LOCK
|
||
# define ide_release_lock() do {} while (0)
|
||
# define ide_get_lock(hdlr, data) do {} while (0)
|
||
#endif /* IDE_ARCH_LOCK */
|
||
|
||
/*
|
||
* 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
|
||
*
|
||
* set_geometry : respecify drive geometry
|
||
* recalibrate : seek to cyl 0
|
||
* set_multmode : set multmode count
|
||
* reserved : unused
|
||
*/
|
||
typedef union {
|
||
unsigned all : 8;
|
||
struct {
|
||
unsigned set_geometry : 1;
|
||
unsigned recalibrate : 1;
|
||
unsigned set_multmode : 1;
|
||
unsigned reserved : 5;
|
||
} b;
|
||
} special_t;
|
||
|
||
/*
|
||
* 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_TFLAG_LBA48 = (1 << 0),
|
||
IDE_TFLAG_FLAGGED = (1 << 2),
|
||
IDE_TFLAG_OUT_DATA = (1 << 3),
|
||
IDE_TFLAG_OUT_HOB_FEATURE = (1 << 4),
|
||
IDE_TFLAG_OUT_HOB_NSECT = (1 << 5),
|
||
IDE_TFLAG_OUT_HOB_LBAL = (1 << 6),
|
||
IDE_TFLAG_OUT_HOB_LBAM = (1 << 7),
|
||
IDE_TFLAG_OUT_HOB_LBAH = (1 << 8),
|
||
IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
|
||
IDE_TFLAG_OUT_HOB_NSECT |
|
||
IDE_TFLAG_OUT_HOB_LBAL |
|
||
IDE_TFLAG_OUT_HOB_LBAM |
|
||
IDE_TFLAG_OUT_HOB_LBAH,
|
||
IDE_TFLAG_OUT_FEATURE = (1 << 9),
|
||
IDE_TFLAG_OUT_NSECT = (1 << 10),
|
||
IDE_TFLAG_OUT_LBAL = (1 << 11),
|
||
IDE_TFLAG_OUT_LBAM = (1 << 12),
|
||
IDE_TFLAG_OUT_LBAH = (1 << 13),
|
||
IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
|
||
IDE_TFLAG_OUT_NSECT |
|
||
IDE_TFLAG_OUT_LBAL |
|
||
IDE_TFLAG_OUT_LBAM |
|
||
IDE_TFLAG_OUT_LBAH,
|
||
IDE_TFLAG_OUT_DEVICE = (1 << 14),
|
||
IDE_TFLAG_WRITE = (1 << 15),
|
||
IDE_TFLAG_FLAGGED_SET_IN_FLAGS = (1 << 16),
|
||
IDE_TFLAG_IN_DATA = (1 << 17),
|
||
IDE_TFLAG_CUSTOM_HANDLER = (1 << 18),
|
||
IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 19),
|
||
IDE_TFLAG_IN_HOB_FEATURE = (1 << 20),
|
||
IDE_TFLAG_IN_HOB_NSECT = (1 << 21),
|
||
IDE_TFLAG_IN_HOB_LBAL = (1 << 22),
|
||
IDE_TFLAG_IN_HOB_LBAM = (1 << 23),
|
||
IDE_TFLAG_IN_HOB_LBAH = (1 << 24),
|
||
IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
|
||
IDE_TFLAG_IN_HOB_LBAM |
|
||
IDE_TFLAG_IN_HOB_LBAH,
|
||
IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_FEATURE |
|
||
IDE_TFLAG_IN_HOB_NSECT |
|
||
IDE_TFLAG_IN_HOB_LBA,
|
||
IDE_TFLAG_IN_FEATURE = (1 << 1),
|
||
IDE_TFLAG_IN_NSECT = (1 << 25),
|
||
IDE_TFLAG_IN_LBAL = (1 << 26),
|
||
IDE_TFLAG_IN_LBAM = (1 << 27),
|
||
IDE_TFLAG_IN_LBAH = (1 << 28),
|
||
IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
|
||
IDE_TFLAG_IN_LBAM |
|
||
IDE_TFLAG_IN_LBAH,
|
||
IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
|
||
IDE_TFLAG_IN_LBA,
|
||
IDE_TFLAG_IN_DEVICE = (1 << 29),
|
||
IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
|
||
IDE_TFLAG_IN_HOB,
|
||
IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
|
||
IDE_TFLAG_IN_TF,
|
||
IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
|
||
IDE_TFLAG_IN_DEVICE,
|
||
/* force 16-bit I/O operations */
|
||
IDE_TFLAG_IO_16BIT = (1 << 30),
|
||
/* ide_task_t was allocated using kmalloc() */
|
||
IDE_TFLAG_DYN = (1 << 31),
|
||
};
|
||
|
||
struct ide_taskfile {
|
||
u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
|
||
|
||
u8 hob_feature; /* 1-5: additional data to support LBA48 */
|
||
u8 hob_nsect;
|
||
u8 hob_lbal;
|
||
u8 hob_lbam;
|
||
u8 hob_lbah;
|
||
|
||
u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
|
||
|
||
union { /* 7: */
|
||
u8 error; /* read: error */
|
||
u8 feature; /* write: feature */
|
||
};
|
||
|
||
u8 nsect; /* 8: number of sectors */
|
||
u8 lbal; /* 9: LBA low */
|
||
u8 lbam; /* 10: LBA mid */
|
||
u8 lbah; /* 11: LBA high */
|
||
|
||
u8 device; /* 12: device select */
|
||
|
||
union { /* 13: */
|
||
u8 status; /* read: status */
|
||
u8 command; /* write: command */
|
||
};
|
||
};
|
||
|
||
typedef struct ide_task_s {
|
||
union {
|
||
struct ide_taskfile tf;
|
||
u8 tf_array[14];
|
||
};
|
||
u32 tf_flags;
|
||
int data_phase;
|
||
struct request *rq; /* copy of request */
|
||
void *special; /* valid_t generally */
|
||
} ide_task_t;
|
||
|
||
/* ATAPI packet command flags */
|
||
enum {
|
||
/* set when an error is considered normal - no retry (ide-tape) */
|
||
PC_FLAG_ABORT = (1 << 0),
|
||
PC_FLAG_SUPPRESS_ERROR = (1 << 1),
|
||
PC_FLAG_WAIT_FOR_DSC = (1 << 2),
|
||
PC_FLAG_DMA_OK = (1 << 3),
|
||
PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
|
||
PC_FLAG_DMA_ERROR = (1 << 5),
|
||
PC_FLAG_WRITING = (1 << 6),
|
||
/* command timed out */
|
||
PC_FLAG_TIMEDOUT = (1 << 7),
|
||
};
|
||
|
||
/*
|
||
* With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
|
||
* This is used for several packet commands (not for READ/WRITE commands).
|
||
*/
|
||
#define IDE_PC_BUFFER_SIZE 256
|
||
|
||
struct ide_atapi_pc {
|
||
/* actual packet bytes */
|
||
u8 c[12];
|
||
/* incremented on each retry */
|
||
int retries;
|
||
int error;
|
||
|
||
/* bytes to transfer */
|
||
int req_xfer;
|
||
/* bytes actually transferred */
|
||
int xferred;
|
||
|
||
/* data buffer */
|
||
u8 *buf;
|
||
/* current buffer position */
|
||
u8 *cur_pos;
|
||
int buf_size;
|
||
/* missing/available data on the current buffer */
|
||
int b_count;
|
||
|
||
/* 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.
|
||
*/
|
||
u8 pc_buf[IDE_PC_BUFFER_SIZE];
|
||
|
||
/* idetape only */
|
||
struct idetape_bh *bh;
|
||
char *b_data;
|
||
|
||
/* idescsi only for now */
|
||
struct scatterlist *sg;
|
||
unsigned int sg_cnt;
|
||
|
||
struct scsi_cmnd *scsi_cmd;
|
||
void (*done) (struct scsi_cmnd *);
|
||
|
||
unsigned long timeout;
|
||
};
|
||
|
||
struct ide_devset;
|
||
struct ide_driver_s;
|
||
|
||
#ifdef CONFIG_BLK_DEV_IDEACPI
|
||
struct ide_acpi_drive_link;
|
||
struct ide_acpi_hwif_link;
|
||
#endif
|
||
|
||
/* ATAPI device flags */
|
||
enum {
|
||
IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
|
||
IDE_AFLAG_MEDIA_CHANGED = (1 << 1),
|
||
/* Drive cannot lock the door. */
|
||
IDE_AFLAG_NO_DOORLOCK = (1 << 2),
|
||
|
||
/* ide-cd */
|
||
/* Drive cannot eject the disc. */
|
||
IDE_AFLAG_NO_EJECT = (1 << 3),
|
||
/* Drive is a pre ATAPI 1.2 drive. */
|
||
IDE_AFLAG_PRE_ATAPI12 = (1 << 4),
|
||
/* TOC addresses are in BCD. */
|
||
IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5),
|
||
/* TOC track numbers are in BCD. */
|
||
IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6),
|
||
/*
|
||
* Drive does not provide data in multiples of SECTOR_SIZE
|
||
* when more than one interrupt is needed.
|
||
*/
|
||
IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
|
||
/* Seeking in progress. */
|
||
IDE_AFLAG_SEEKING = (1 << 8),
|
||
/* Saved TOC information is current. */
|
||
IDE_AFLAG_TOC_VALID = (1 << 9),
|
||
/* We think that the drive door is locked. */
|
||
IDE_AFLAG_DOOR_LOCKED = (1 << 10),
|
||
/* SET_CD_SPEED command is unsupported. */
|
||
IDE_AFLAG_NO_SPEED_SELECT = (1 << 11),
|
||
IDE_AFLAG_VERTOS_300_SSD = (1 << 12),
|
||
IDE_AFLAG_VERTOS_600_ESD = (1 << 13),
|
||
IDE_AFLAG_SANYO_3CD = (1 << 14),
|
||
IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15),
|
||
IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16),
|
||
IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17),
|
||
|
||
/* ide-floppy */
|
||
/* Format in progress */
|
||
IDE_AFLAG_FORMAT_IN_PROGRESS = (1 << 18),
|
||
/* Avoid commands not supported in Clik drive */
|
||
IDE_AFLAG_CLIK_DRIVE = (1 << 19),
|
||
/* Requires BH algorithm for packets */
|
||
IDE_AFLAG_ZIP_DRIVE = (1 << 20),
|
||
/* Write protect */
|
||
IDE_AFLAG_WP = (1 << 21),
|
||
/* Supports format progress report */
|
||
IDE_AFLAG_SRFP = (1 << 22),
|
||
|
||
/* ide-tape */
|
||
IDE_AFLAG_IGNORE_DSC = (1 << 23),
|
||
/* 0 When the tape position is unknown */
|
||
IDE_AFLAG_ADDRESS_VALID = (1 << 24),
|
||
/* Device already opened */
|
||
IDE_AFLAG_BUSY = (1 << 25),
|
||
/* Attempt to auto-detect the current user block size */
|
||
IDE_AFLAG_DETECT_BS = (1 << 26),
|
||
/* Currently on a filemark */
|
||
IDE_AFLAG_FILEMARK = (1 << 27),
|
||
/* 0 = no tape is loaded, so we don't rewind after ejecting */
|
||
IDE_AFLAG_MEDIUM_PRESENT = (1 << 28),
|
||
|
||
IDE_AFLAG_NO_AUTOCLOSE = (1 << 29),
|
||
};
|
||
|
||
/* device flags */
|
||
enum {
|
||
/* restore settings after device reset */
|
||
IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
|
||
/* device is using DMA for read/write */
|
||
IDE_DFLAG_USING_DMA = (1 << 1),
|
||
/* okay to unmask other IRQs */
|
||
IDE_DFLAG_UNMASK = (1 << 2),
|
||
/* don't attempt flushes */
|
||
IDE_DFLAG_NOFLUSH = (1 << 3),
|
||
/* DSC overlap */
|
||
IDE_DFLAG_DSC_OVERLAP = (1 << 4),
|
||
/* give potential excess bandwidth */
|
||
IDE_DFLAG_NICE1 = (1 << 5),
|
||
/* device is physically present */
|
||
IDE_DFLAG_PRESENT = (1 << 6),
|
||
/* device ejected hint */
|
||
IDE_DFLAG_DEAD = (1 << 7),
|
||
/* id read from device (synthetic if not set) */
|
||
IDE_DFLAG_ID_READ = (1 << 8),
|
||
IDE_DFLAG_NOPROBE = (1 << 9),
|
||
/* need to do check_media_change() */
|
||
IDE_DFLAG_REMOVABLE = (1 << 10),
|
||
/* needed for removable devices */
|
||
IDE_DFLAG_ATTACH = (1 << 11),
|
||
IDE_DFLAG_FORCED_GEOM = (1 << 12),
|
||
/* disallow setting unmask bit */
|
||
IDE_DFLAG_NO_UNMASK = (1 << 13),
|
||
/* disallow enabling 32-bit I/O */
|
||
IDE_DFLAG_NO_IO_32BIT = (1 << 14),
|
||
/* for removable only: door lock/unlock works */
|
||
IDE_DFLAG_DOORLOCKING = (1 << 15),
|
||
/* disallow DMA */
|
||
IDE_DFLAG_NODMA = (1 << 16),
|
||
/* powermanagment told us not to do anything, so sleep nicely */
|
||
IDE_DFLAG_BLOCKED = (1 << 17),
|
||
/* ide-scsi emulation */
|
||
IDE_DFLAG_SCSI = (1 << 18),
|
||
/* sleeping & sleep field valid */
|
||
IDE_DFLAG_SLEEPING = (1 << 19),
|
||
IDE_DFLAG_POST_RESET = (1 << 20),
|
||
IDE_DFLAG_UDMA33_WARNED = (1 << 21),
|
||
IDE_DFLAG_LBA48 = (1 << 22),
|
||
/* status of write cache */
|
||
IDE_DFLAG_WCACHE = (1 << 23),
|
||
/* used for ignoring ATA_DF */
|
||
IDE_DFLAG_NOWERR = (1 << 24),
|
||
/* retrying in PIO */
|
||
IDE_DFLAG_DMA_PIO_RETRY = (1 << 25),
|
||
IDE_DFLAG_LBA = (1 << 26),
|
||
/* don't unload heads */
|
||
IDE_DFLAG_NO_UNLOAD = (1 << 27),
|
||
/* heads unloaded, please don't reset port */
|
||
IDE_DFLAG_PARKED = (1 << 28)
|
||
};
|
||
|
||
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 */
|
||
|
||
struct request *rq; /* current request */
|
||
struct ide_drive_s *next; /* circular list of hwgroup drives */
|
||
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 *) */
|
||
|
||
unsigned long dev_flags;
|
||
|
||
unsigned long sleep; /* sleep until this time */
|
||
unsigned long service_start; /* time we started last request */
|
||
unsigned long service_time; /* service time of last request */
|
||
unsigned long timeout; /* max time to wait for irq */
|
||
|
||
special_t special; /* 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 quirk_list; /* considered quirky, set for a specific host */
|
||
u8 init_speed; /* transfer rate set at boot */
|
||
u8 current_speed; /* current transfer rate set */
|
||
u8 desired_speed; /* desired transfer rate set */
|
||
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 */
|
||
unsigned int drive_data; /* used by set_pio_mode/selectproc */
|
||
unsigned int failures; /* current failure count */
|
||
unsigned int max_failures; /* maximum allowed failure count */
|
||
u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */
|
||
|
||
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;
|
||
|
||
/* callback for packet commands */
|
||
void (*pc_callback)(struct ide_drive_s *, int);
|
||
|
||
void (*pc_update_buffers)(struct ide_drive_s *, struct ide_atapi_pc *);
|
||
int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
|
||
unsigned int, int);
|
||
|
||
unsigned long atapi_flags;
|
||
|
||
struct ide_atapi_pc request_sense_pc;
|
||
struct request request_sense_rq;
|
||
};
|
||
|
||
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, kref)
|
||
|
||
#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 *);
|
||
u8 (*read_sff_dma_status)(struct hwif_s *);
|
||
|
||
void (*set_irq)(struct hwif_s *, int);
|
||
|
||
void (*tf_load)(ide_drive_t *, struct ide_task_s *);
|
||
void (*tf_read)(ide_drive_t *, struct ide_task_s *);
|
||
|
||
void (*input_data)(ide_drive_t *, struct request *, void *,
|
||
unsigned int);
|
||
void (*output_data)(ide_drive_t *, struct request *, 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
|
||
* @selectproc: tweaks hardware to select drive
|
||
* @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)(ide_drive_t *, const u8);
|
||
void (*set_dma_mode)(ide_drive_t *, const u8);
|
||
void (*selectproc)(ide_drive_t *);
|
||
int (*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 *);
|
||
|
||
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 *);
|
||
void (*dma_exec_cmd)(struct ide_drive_s *, u8);
|
||
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 *);
|
||
void (*dma_timeout)(struct ide_drive_s *);
|
||
};
|
||
|
||
struct ide_host;
|
||
|
||
typedef struct hwif_s {
|
||
struct hwif_s *next; /* for linked-list in ide_hwgroup_t */
|
||
struct hwif_s *mate; /* other hwif from same PCI chip */
|
||
struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */
|
||
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 drives[MAX_DRIVES]; /* drive info */
|
||
|
||
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;
|
||
|
||
ide_ack_intr_t *ack_intr;
|
||
|
||
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 */
|
||
int sg_nents; /* Current number of entries in it */
|
||
int sg_dma_direction; /* dma transfer direction */
|
||
|
||
/* data phase of the active command (currently only valid for PIO/DMA) */
|
||
int data_phase;
|
||
|
||
struct ide_task_s task; /* current command */
|
||
|
||
unsigned int nsect;
|
||
unsigned int nleft;
|
||
struct scatterlist *cursg;
|
||
unsigned int cursg_ofs;
|
||
|
||
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 serialized : 1; /* serialized all channel operation */
|
||
unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
|
||
unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
|
||
|
||
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
|
||
} ____cacheline_internodealigned_in_smp ide_hwif_t;
|
||
|
||
#define MAX_HOST_PORTS 4
|
||
|
||
struct ide_host {
|
||
ide_hwif_t *ports[MAX_HOST_PORTS];
|
||
unsigned int n_ports;
|
||
struct device *dev[2];
|
||
unsigned int (*init_chipset)(struct pci_dev *);
|
||
unsigned long host_flags;
|
||
void *host_priv;
|
||
};
|
||
|
||
/*
|
||
* 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 request *rq, void *, unsigned);
|
||
|
||
typedef struct hwgroup_s {
|
||
/* irq handler, if active */
|
||
ide_startstop_t (*handler)(ide_drive_t *);
|
||
|
||
/* BOOL: protects all fields below */
|
||
volatile int busy;
|
||
/* BOOL: wake us up on timer expiry */
|
||
unsigned int sleeping : 1;
|
||
/* BOOL: polling active & poll_timeout field valid */
|
||
unsigned int polling : 1;
|
||
|
||
/* current drive */
|
||
ide_drive_t *drive;
|
||
/* ptr to current hwif in linked-list */
|
||
ide_hwif_t *hwif;
|
||
|
||
/* 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;
|
||
} ide_hwgroup_t;
|
||
|
||
typedef struct ide_driver_s ide_driver_t;
|
||
|
||
extern struct mutex ide_setting_mtx;
|
||
|
||
/*
|
||
* configurable drive settings
|
||
*/
|
||
|
||
#define DS_SYNC (1 << 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_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;
|
||
mode_t mode;
|
||
read_proc_t *read_proc;
|
||
write_proc_t *write_proc;
|
||
} 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 *, ide_driver_t *);
|
||
void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
|
||
|
||
read_proc_t proc_ide_read_capacity;
|
||
read_proc_t proc_ide_read_geometry;
|
||
|
||
/*
|
||
* Standard exit stuff:
|
||
*/
|
||
#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \
|
||
{ \
|
||
len -= off; \
|
||
if (len < count) { \
|
||
*eof = 1; \
|
||
if (len <= 0) \
|
||
return 0; \
|
||
} else \
|
||
len = count; \
|
||
*start = page + off; \
|
||
return len; \
|
||
}
|
||
#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, ide_driver_t *driver) { ; }
|
||
static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
|
||
#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
|
||
#endif
|
||
|
||
enum {
|
||
/* enter/exit functions */
|
||
IDE_DBG_FUNC = (1 << 0),
|
||
/* sense key/asc handling */
|
||
IDE_DBG_SENSE = (1 << 1),
|
||
/* packet commands handling */
|
||
IDE_DBG_PC = (1 << 2),
|
||
/* request handling */
|
||
IDE_DBG_RQ = (1 << 3),
|
||
/* driver probing/setup */
|
||
IDE_DBG_PROBE = (1 << 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 ": " fmt, ## 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,
|
||
};
|
||
|
||
/*
|
||
* 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_s {
|
||
const char *version;
|
||
ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
|
||
int (*end_request)(ide_drive_t *, int, int);
|
||
ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
|
||
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;
|
||
const struct ide_proc_devset *settings;
|
||
#endif
|
||
};
|
||
|
||
#define to_ide_driver(drv) container_of(drv, ide_driver_t, 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 file *, struct block_device *,
|
||
unsigned, unsigned long);
|
||
|
||
extern int ide_vlb_clk;
|
||
extern int ide_pci_clk;
|
||
|
||
extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
|
||
int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
|
||
int uptodate, int nr_sectors);
|
||
|
||
extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry);
|
||
|
||
void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
|
||
ide_expiry_t *);
|
||
|
||
void ide_execute_pkt_cmd(ide_drive_t *);
|
||
|
||
void ide_pad_transfer(ide_drive_t *, int, int);
|
||
|
||
ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
|
||
|
||
ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
|
||
|
||
void ide_fix_driveid(u16 *);
|
||
|
||
extern void ide_fixstring(u8 *, const int, const int);
|
||
|
||
int ide_busy_sleep(ide_hwif_t *, unsigned long, int);
|
||
|
||
int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long);
|
||
|
||
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);
|
||
|
||
extern void ide_do_drive_cmd(ide_drive_t *, struct request *);
|
||
|
||
extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
|
||
|
||
void ide_tf_dump(const char *, struct ide_taskfile *);
|
||
|
||
void ide_exec_command(ide_hwif_t *, u8);
|
||
u8 ide_read_status(ide_hwif_t *);
|
||
u8 ide_read_altstatus(ide_hwif_t *);
|
||
u8 ide_read_sff_dma_status(ide_hwif_t *);
|
||
|
||
void ide_set_irq(ide_hwif_t *, int);
|
||
|
||
void ide_tf_load(ide_drive_t *, ide_task_t *);
|
||
void ide_tf_read(ide_drive_t *, ide_task_t *);
|
||
|
||
void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int);
|
||
void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int);
|
||
|
||
int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int);
|
||
|
||
extern void SELECT_DRIVE(ide_drive_t *);
|
||
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 *);
|
||
|
||
extern int drive_is_ready(ide_drive_t *);
|
||
|
||
void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8);
|
||
|
||
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 = (1 << 0), /* packet command (first stage) */
|
||
REQ_IDETAPE_PC2 = (1 << 1), /* packet command (second stage) */
|
||
REQ_IDETAPE_READ = (1 << 2),
|
||
REQ_IDETAPE_WRITE = (1 << 3),
|
||
};
|
||
|
||
int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
|
||
|
||
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 *, struct gendisk *);
|
||
|
||
static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc)
|
||
{
|
||
return max_t(unsigned long, WAIT_CMD, pc->timeout - jiffies);
|
||
}
|
||
|
||
int ide_scsi_expiry(ide_drive_t *);
|
||
|
||
ide_startstop_t ide_issue_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
|
||
|
||
ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *);
|
||
|
||
void task_end_request(ide_drive_t *, struct request *, u8);
|
||
|
||
int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16);
|
||
int ide_no_data_taskfile(ide_drive_t *, ide_task_t *);
|
||
|
||
int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long);
|
||
|
||
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(unsigned long);
|
||
extern irqreturn_t ide_intr(int irq, void *dev_id);
|
||
extern void do_ide_request(struct request_queue *);
|
||
|
||
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
|
||
|
||
void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
|
||
hw_regs_t *, hw_regs_t **);
|
||
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
|
||
|
||
typedef struct ide_pci_enablebit_s {
|
||
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" */
|
||
} ide_pci_enablebit_t;
|
||
|
||
enum {
|
||
/* Uses ISA control ports not PCI ones. */
|
||
IDE_HFLAG_ISA_PORTS = (1 << 0),
|
||
/* single port device */
|
||
IDE_HFLAG_SINGLE = (1 << 1),
|
||
/* don't use legacy PIO blacklist */
|
||
IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
|
||
/* set for the second port of QD65xx */
|
||
IDE_HFLAG_QD_2ND_PORT = (1 << 3),
|
||
/* use PIO8/9 for prefetch off/on */
|
||
IDE_HFLAG_ABUSE_PREFETCH = (1 << 4),
|
||
/* use PIO6/7 for fast-devsel off/on */
|
||
IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5),
|
||
/* use 100-102 and 200-202 PIO values to set DMA modes */
|
||
IDE_HFLAG_ABUSE_DMA_MODES = (1 << 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 = (1 << 7),
|
||
/* program host for the transfer mode after programming device */
|
||
IDE_HFLAG_POST_SET_MODE = (1 << 8),
|
||
/* don't program host/device for the transfer mode ("smart" hosts) */
|
||
IDE_HFLAG_NO_SET_MODE = (1 << 9),
|
||
/* trust BIOS for programming chipset/device for DMA */
|
||
IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10),
|
||
/* host is CS5510/CS5520 */
|
||
IDE_HFLAG_CS5520 = (1 << 11),
|
||
/* ATAPI DMA is unsupported */
|
||
IDE_HFLAG_NO_ATAPI_DMA = (1 << 12),
|
||
/* set if host is a "non-bootable" controller */
|
||
IDE_HFLAG_NON_BOOTABLE = (1 << 13),
|
||
/* host doesn't support DMA */
|
||
IDE_HFLAG_NO_DMA = (1 << 14),
|
||
/* check if host is PCI IDE device before allowing DMA */
|
||
IDE_HFLAG_NO_AUTODMA = (1 << 15),
|
||
/* host uses MMIO */
|
||
IDE_HFLAG_MMIO = (1 << 16),
|
||
/* no LBA48 */
|
||
IDE_HFLAG_NO_LBA48 = (1 << 17),
|
||
/* no LBA48 DMA */
|
||
IDE_HFLAG_NO_LBA48_DMA = (1 << 18),
|
||
/* data FIFO is cleared by an error */
|
||
IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19),
|
||
/* serialize ports */
|
||
IDE_HFLAG_SERIALIZE = (1 << 20),
|
||
/* use legacy IRQs */
|
||
IDE_HFLAG_LEGACY_IRQS = (1 << 21),
|
||
/* force use of legacy IRQs */
|
||
IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
|
||
/* limit LBA48 requests to 256 sectors */
|
||
IDE_HFLAG_RQSIZE_256 = (1 << 23),
|
||
/* use 32-bit I/O ops */
|
||
IDE_HFLAG_IO_32BIT = (1 << 24),
|
||
/* unmask IRQs */
|
||
IDE_HFLAG_UNMASK_IRQS = (1 << 25),
|
||
/* serialize ports if DMA is possible (for sl82c105) */
|
||
IDE_HFLAG_SERIALIZE_DMA = (1 << 27),
|
||
/* force host out of "simplex" mode */
|
||
IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28),
|
||
/* DSC overlap is unsupported */
|
||
IDE_HFLAG_NO_DSC = (1 << 29),
|
||
/* never use 32-bit I/O ops */
|
||
IDE_HFLAG_NO_IO_32BIT = (1 << 30),
|
||
/* never unmask IRQs */
|
||
IDE_HFLAG_NO_UNMASK_IRQS = (1 << 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;
|
||
unsigned int (*init_chipset)(struct pci_dev *);
|
||
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;
|
||
|
||
ide_pci_enablebit_t enablebits[2];
|
||
hwif_chipset_t chipset;
|
||
u32 host_flags;
|
||
u8 pio_mask;
|
||
u8 swdma_mask;
|
||
u8 mwdma_mask;
|
||
u8 udma_mask;
|
||
};
|
||
|
||
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 request *);
|
||
void ide_init_sg_cmd(ide_drive_t *, struct request *);
|
||
|
||
#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 *);
|
||
int ide_id_dma_bug(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_build_sglist(ide_drive_t *, struct request *);
|
||
void ide_destroy_dmatable(ide_drive_t *);
|
||
|
||
#ifdef CONFIG_BLK_DEV_IDEDMA_SFF
|
||
int config_drive_for_dma(ide_drive_t *);
|
||
extern int ide_build_dmatable(ide_drive_t *, struct request *);
|
||
void ide_dma_host_set(ide_drive_t *, int);
|
||
extern int ide_dma_setup(ide_drive_t *);
|
||
void ide_dma_exec_cmd(ide_drive_t *, u8);
|
||
extern void ide_dma_start(ide_drive_t *);
|
||
int ide_dma_end(ide_drive_t *);
|
||
int ide_dma_test_irq(ide_drive_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 *);
|
||
void ide_dma_timeout(ide_drive_t *);
|
||
|
||
#else
|
||
static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
|
||
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 void ide_release_dma_engine(ide_hwif_t *hwif) { ; }
|
||
#endif /* CONFIG_BLK_DEV_IDEDMA */
|
||
|
||
#ifdef CONFIG_BLK_DEV_IDEACPI
|
||
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);
|
||
extern void ide_acpi_init(ide_hwif_t *hwif);
|
||
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_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(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_remove_port_from_hwgroup(ide_hwif_t *);
|
||
void ide_unregister(ide_hwif_t *);
|
||
|
||
void ide_register_region(struct gendisk *);
|
||
void ide_unregister_region(struct gendisk *);
|
||
|
||
void ide_undecoded_slave(ide_drive_t *);
|
||
|
||
void ide_port_apply_params(ide_hwif_t *);
|
||
|
||
struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
|
||
void ide_host_free(struct ide_host *);
|
||
int ide_host_register(struct ide_host *, const struct ide_port_info *,
|
||
hw_regs_t **);
|
||
int ide_host_add(const struct ide_port_info *, hw_regs_t **,
|
||
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;
|
||
}
|
||
|
||
const char *ide_xfer_verbose(u8 mode);
|
||
extern void ide_toggle_bounce(ide_drive_t *drive, int on);
|
||
extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
|
||
|
||
u64 ide_get_lba_addr(struct ide_taskfile *, 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 = (1 << 0),
|
||
IDE_TIMING_ACT8B = (1 << 1),
|
||
IDE_TIMING_REC8B = (1 << 2),
|
||
IDE_TIMING_CYC8B = (1 << 3),
|
||
IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B |
|
||
IDE_TIMING_CYC8B,
|
||
IDE_TIMING_ACTIVE = (1 << 4),
|
||
IDE_TIMING_RECOVER = (1 << 5),
|
||
IDE_TIMING_CYCLE = (1 << 6),
|
||
IDE_TIMING_UDMA = (1 << 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);
|
||
|
||
int ide_scan_pio_blacklist(char *);
|
||
|
||
u8 ide_get_best_pio_mode(ide_drive_t *, u8, 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);
|
||
|
||
static inline void ide_set_max_pio(ide_drive_t *drive)
|
||
{
|
||
ide_set_pio(drive, 255);
|
||
}
|
||
|
||
extern spinlock_t ide_lock;
|
||
extern struct mutex ide_cfg_mtx;
|
||
/*
|
||
* Structure locking:
|
||
*
|
||
* ide_cfg_mtx and ide_lock together protect changes to
|
||
* ide_hwif_t->{next,hwgroup}
|
||
* ide_drive_t->next
|
||
*
|
||
* ide_hwgroup_t->busy: ide_lock
|
||
* ide_hwgroup_t->hwif: ide_lock
|
||
* ide_hwif_t->mate: constant, no locking
|
||
* ide_drive_t->hwif: constant, no locking
|
||
*/
|
||
|
||
#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
|
||
|
||
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->drives[(drive->dn ^ 1) & 1];
|
||
|
||
return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
|
||
}
|
||
#endif /* _IDE_H */
|