kernel-fxtec-pro1x/include/linux/ide.h

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#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
/*
* Probably not wise to fiddle with these
*/
#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 */
/*
* 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
/*
* 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
ide: Implement disk shock protection support (v4) 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>
2008-10-13 13:39:50 -06:00
#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_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;
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
#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;
/* 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;
struct scatterlist *sg;
unsigned int sg_cnt;
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 (*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 (*end_request)(struct ide_drive_s *, int, int);
int (*ioctl)(struct ide_drive_s *, struct block_device *,
fmode_t, unsigned int, unsigned long);
};
/* ATAPI device flags */
enum {
IDE_AFLAG_DRQ_INTERRUPT = (1 << 0),
/* ide-cd */
/* Drive cannot eject the disc. */
IDE_AFLAG_NO_EJECT = (1 << 1),
/* Drive is a pre ATAPI 1.2 drive. */
IDE_AFLAG_PRE_ATAPI12 = (1 << 2),
/* TOC addresses are in BCD. */
IDE_AFLAG_TOCADDR_AS_BCD = (1 << 3),
/* TOC track numbers are in BCD. */
IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 4),
/*
* Drive does not provide data in multiples of SECTOR_SIZE
* when more than one interrupt is needed.
*/
IDE_AFLAG_LIMIT_NFRAMES = (1 << 5),
/* Saved TOC information is current. */
IDE_AFLAG_TOC_VALID = (1 << 6),
/* We think that the drive door is locked. */
IDE_AFLAG_DOOR_LOCKED = (1 << 7),
/* SET_CD_SPEED command is unsupported. */
IDE_AFLAG_NO_SPEED_SELECT = (1 << 8),
IDE_AFLAG_VERTOS_300_SSD = (1 << 9),
IDE_AFLAG_VERTOS_600_ESD = (1 << 10),
IDE_AFLAG_SANYO_3CD = (1 << 11),
IDE_AFLAG_FULL_CAPS_PAGE = (1 << 12),
IDE_AFLAG_PLAY_AUDIO_OK = (1 << 13),
IDE_AFLAG_LE_SPEED_FIELDS = (1 << 14),
/* ide-floppy */
/* Avoid commands not supported in Clik drive */
IDE_AFLAG_CLIK_DRIVE = (1 << 15),
/* Requires BH algorithm for packets */
IDE_AFLAG_ZIP_DRIVE = (1 << 16),
/* Supports format progress report */
IDE_AFLAG_SRFP = (1 << 17),
/* ide-tape */
IDE_AFLAG_IGNORE_DSC = (1 << 18),
/* 0 When the tape position is unknown */
IDE_AFLAG_ADDRESS_VALID = (1 << 19),
/* Device already opened */
IDE_AFLAG_BUSY = (1 << 20),
/* Attempt to auto-detect the current user block size */
IDE_AFLAG_DETECT_BS = (1 << 21),
/* Currently on a filemark */
IDE_AFLAG_FILEMARK = (1 << 22),
/* 0 = no tape is loaded, so we don't rewind after ejecting */
IDE_AFLAG_MEDIUM_PRESENT = (1 << 23),
IDE_AFLAG_NO_AUTOCLOSE = (1 << 24),
};
/* 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),
/* sleeping & sleep field valid */
IDE_DFLAG_SLEEPING = (1 << 18),
IDE_DFLAG_POST_RESET = (1 << 19),
IDE_DFLAG_UDMA33_WARNED = (1 << 20),
IDE_DFLAG_LBA48 = (1 << 21),
/* status of write cache */
IDE_DFLAG_WCACHE = (1 << 22),
/* used for ignoring ATA_DF */
IDE_DFLAG_NOWERR = (1 << 23),
/* retrying in PIO */
IDE_DFLAG_DMA_PIO_RETRY = (1 << 24),
IDE_DFLAG_LBA = (1 << 25),
ide: Implement disk shock protection support (v4) 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>
2008-10-13 13:39:50 -06:00
/* don't unload heads */
IDE_DFLAG_NO_UNLOAD = (1 << 26),
ide: Implement disk shock protection support (v4) 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>
2008-10-13 13:39:50 -06:00
/* heads unloaded, please don't reset port */
IDE_DFLAG_PARKED = (1 << 27),
IDE_DFLAG_MEDIA_CHANGED = (1 << 28),
/* write protect */
IDE_DFLAG_WP = (1 << 29),
IDE_DFLAG_FORMAT_IN_PROGRESS = (1 << 30),
};
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 */
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 */
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 */
[PATCH] IDE CD end-of media error fix This is a patch from Alan that fixes a real ide-cd.c regression causing bogus "Media Check" failures for perfectly valid Fedora install ISOs, on certain CD-ROM drives. This is a forward port to 2.6.16 (from RHEL) of the minimal changes for the end of media problem. It may not be sufficient for some controllers (promise notably) and it does not touch the locking so the error path locking is as horked as in mainstream. From: Ingo Molnar <mingo@elte.hu> I have ported the patch to 2.6.17-rc4 and tested it by provoking end-of-media IO errors with an unaligned ISO image. Unlike the vanilla kernel, the patched kernel interpreted the error condition correctly with 512 byte granularity: hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown ATAPI device hdc: Error: Illegal request -- (Sense key=0x05) Illegal mode for this track or incompatible medium -- (asc=0x64, ascq=0x00) The failed "Read 10" packet command was: "28 00 00 04 fb 78 00 00 06 00 00 00 00 00 00 00 " end_request: I/O error, dev hdc, sector 1306080 Buffer I/O error on device hdc, logical block 163260 Buffer I/O error on device hdc, logical block 163261 Buffer I/O error on device hdc, logical block 163262 the unpatched kernel produces an incorrect error dump: hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown end_request: I/O error, dev hdc, sector 1306080 Buffer I/O error on device hdc, logical block 163260 hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown end_request: I/O error, dev hdc, sector 1306088 Buffer I/O error on device hdc, logical block 163261 hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown end_request: I/O error, dev hdc, sector 1306096 Buffer I/O error on device hdc, logical block 163262 I do not have the right type of CD-ROM drive to reproduce the end-of-media data corruption bug myself, but this same patch in RHEL solved it. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Cc: Jens Axboe <axboe@suse.de> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-25 06:47:44 -06:00
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);
ide_startstop_t (*irq_handler)(struct ide_drive_s *);
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 *);
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 *);
/*
* 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 *);
};
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];
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 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];
unsigned int (*init_chipset)(struct pci_dev *);
unsigned long host_flags;
void *host_priv;
ide_hwif_t *cur_port; /* for hosts requiring serialization */
/* used for hosts requiring serialization */
volatile 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 request *rq, void *, unsigned);
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 *, struct ide_driver *);
void ide_proc_unregister_driver(ide_drive_t *, struct ide_driver *);
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,
struct ide_driver *driver) { ; }
static inline void ide_proc_unregister_driver(ide_drive_t *drive,
struct ide_driver *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,
};
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_request(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);
int (*end_request)(ide_drive_t *, int, int);
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;
extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
[PATCH] IDE CD end-of media error fix This is a patch from Alan that fixes a real ide-cd.c regression causing bogus "Media Check" failures for perfectly valid Fedora install ISOs, on certain CD-ROM drives. This is a forward port to 2.6.16 (from RHEL) of the minimal changes for the end of media problem. It may not be sufficient for some controllers (promise notably) and it does not touch the locking so the error path locking is as horked as in mainstream. From: Ingo Molnar <mingo@elte.hu> I have ported the patch to 2.6.17-rc4 and tested it by provoking end-of-media IO errors with an unaligned ISO image. Unlike the vanilla kernel, the patched kernel interpreted the error condition correctly with 512 byte granularity: hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown ATAPI device hdc: Error: Illegal request -- (Sense key=0x05) Illegal mode for this track or incompatible medium -- (asc=0x64, ascq=0x00) The failed "Read 10" packet command was: "28 00 00 04 fb 78 00 00 06 00 00 00 00 00 00 00 " end_request: I/O error, dev hdc, sector 1306080 Buffer I/O error on device hdc, logical block 163260 Buffer I/O error on device hdc, logical block 163261 Buffer I/O error on device hdc, logical block 163262 the unpatched kernel produces an incorrect error dump: hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown end_request: I/O error, dev hdc, sector 1306080 Buffer I/O error on device hdc, logical block 163260 hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown end_request: I/O error, dev hdc, sector 1306088 Buffer I/O error on device hdc, logical block 163261 hdc: command error: status=0x51 { DriveReady SeekComplete Error } hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown end_request: I/O error, dev hdc, sector 1306096 Buffer I/O error on device hdc, logical block 163262 I do not have the right type of CD-ROM drive to reproduce the end-of-media data corruption bug myself, but this same patch in RHEL solved it. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Cc: Jens Axboe <axboe@suse.de> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-25 06:47:44 -06:00
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 *, const char *, u8);
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 *);
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 *);
ide: Implement disk shock protection support (v4) 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>
2008-10-13 13:39:50 -06:00
/* 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 *);
int ide_cd_expiry(ide_drive_t *);
int ide_cd_get_xferlen(struct request *);
ide_startstop_t ide_issue_pc(ide_drive_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);
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 07:55:46 -06:00
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
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 *, 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
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 = (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),
ide: move ide_config_drive_speed() calls to upper layers (take 2) * Convert {ide_hwif_t,ide_pci_device_t}->host_flag to be u16. * Add IDE_HFLAG_POST_SET_MODE host flag to indicate the need to program the host for the transfer mode after programming the device. Set it in au1xxx-ide, amd74xx, cs5530, cs5535, pdc202xx_new, sc1200, pmac and via82cxxx host drivers. * Add IDE_HFLAG_NO_SET_MODE host flag to indicate the need to completely skip programming of host/device for the transfer mode ("smart" hosts). Set it in it821x host driver and check it in ide_tune_dma(). * Add ide_set_pio_mode()/ide_set_dma_mode() helpers and convert all direct ->set_pio_mode/->speedproc users to use these helpers. * Move ide_config_drive_speed() calls from ->set_pio_mode/->speedproc methods to callers. * Rename ->speedproc method to ->set_dma_mode, make it void and update all implementations accordingly. * Update ide_set_xfer_rate() comments. * Unexport ide_config_drive_speed(). v2: * Fix issues noticed by Sergei: - export ide_set_dma_mode() instead of moving ->set_pio_mode abuse wrt to setting DMA modes from sc1200_set_pio_mode() to do_special() - check IDE_HFLAG_NO_SET_MODE in ide_tune_dma() - check for (hwif->set_pio_mode) == NULL in ide_set_pio_mode() - check for (hwif->set_dma_mode) == NULL in ide_set_dma_mode() - return -1 from ide_set_{pio,dma}_mode() if ->set_{pio,dma}_mode == NULL - don't set ->set_{pio,dma}_mode on it821x in "smart" mode - fix build problem in pmac.c - minor fixes in au1xxx-ide.c/cs5530.c/siimage.c - improve patch description Changes in behavior caused by this patch: - HDIO_SET_PIO_MODE ioctl would now return -ENOSYS for attempts to change PIO mode if it821x controller is in "smart" mode - removal of two debugging printk-s (from cs5530.c and sc1200.c) - transfer modes 0x00-0x07 passed from user space may be programmed twice on the device (not really an issue since 0x00 is not supported correctly by any host driver ATM, 0x01 is not supported at all and 0x02-0x07 are invalid) Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-13 09:47:51 -06:00
/* 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),
/* host is TRM290 */
IDE_HFLAG_TRM290 = (1 << 23),
/* use 32-bit I/O ops */
IDE_HFLAG_IO_32BIT = (1 << 24),
/* unmask IRQs */
IDE_HFLAG_UNMASK_IRQS = (1 << 25),
IDE_HFLAG_BROKEN_ALTSTATUS = (1 << 26),
/* 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;
struct ide_pci_enablebit enablebits[2];
hwif_chipset_t chipset;
u16 max_sectors; /* if < than the default one */
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 *);
ide: DMA reporting and validity checking fixes (take 3) * ide_xfer_verbose() fixups: - beautify returned mode names - fix PIO5 reporting - make it return 'const char *' * Change printk() level from KERN_DEBUG to KERN_INFO in ide_find_dma_mode(). * Add ide_id_dma_bug() helper based on ide_dma_verbose() to check for invalid DMA info in identify block. * Use ide_id_dma_bug() in ide_tune_dma() and ide_driveid_update(). As a result DMA won't be tuned or will be disabled after tuning if device reports inconsistent info about enabled DMA mode (ide_dma_verbose() does the same checks while the IDE device is probed by ide-{cd,disk} device driver). * Remove no longer needed ide_dma_verbose(). This patch should fix the following problem with out-of-sync IDE messages reported by Nick Warne: hdd: ATAPI 48X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache<7>hdd: skipping word 93 validity check , UDMA(66) and later debugged by Mark Lord to be caused by: ide_dma_verbose() printk( ... "2048kB Cache"); eighty_ninty_three() printk(KERN_DEBUG "%s: skipping word 93 validity check\n"); ide_dma_verbose() printk(", UDMA(66)" Please note that as a result ide-{cd,disk} device drivers won't report the DMA speed used but this is intended since now DMA mode being used is always reported by IDE core code. v2: * fixes suggested by Randy: - use KERN_CONT for printk()-s in ide-{cd,disk}.c - don't remove argument name from ide_xfer_verbose() declaration v3: * Remove incorrect check for (id->field_valid & 1) from ide_id_dma_bug() (spotted by Sergei). * "XFER SLOW" -> "PIO SLOW" in ide_xfer_verbose() (suggested by Sergei). * Fix ide_find_dma_mode() to report the correct mode ('mode' after being limited by 'req_mode'). Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Nick Warne <nick@ukfsn.org> Cc: Mark Lord <lkml@rtr.ca> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-12-12 15:31:58 -07:00
int ide_id_dma_bug(ide_drive_t *);
ide: mode limiting fixes for user requested speed changes * Add an extra argument to ide_max_dma_mode() for passing requested transfer mode. Use it as an upper limit when finding the best DMA for device/host. * Rename ide_max_dma_mode() to ide_find_dma_mode() and at the same time add ide_max_dma_mode() wrapper which passes XFER_UDMA_6 as a requested mode to ide_find_dma_mode(). Also add inline ide_find_dma_mode() version for CONFIG_BLK_DEV_IDEDMA=n case. * Pass requested transfer mode from ide_find_dma_mode() to ide_get_mode_mask() to avoid false warning from eighty_ninty_three(). * Use ide_find_dma_mode() to limit the user requested transfer mode in ide_rate_filter(). Also limit the requested mode by host max PIO mode. Above changes make ide_rate_filter() to: * Clip desired transfer mode down if it is invalid (values 0x0F, 0x13-0x19 and 0x25-0x39, values > 0x46 were already clipped down, same for values 0x25-0x39 but iff UDMA was not supported by the host). * Clip desired transfer mode down if it is currently unsupported by IDE core (PIO6 and MWDMA3-4, the latter were already clipped down but iff UDMA was not supported by the host). * Clip desired transfer mode down according to the host capabilities (UDMA modes were already clipped down but MWDMA/SWDMA/PIO weren't, also ->atapi_dma flag was not respected). * Clip desired transfer mode down according to the device capabilities (except PIO modes for now which require mode work) - shouldn't be a problem since ide_set_xfer_rate() is called _after_ device has accepted given transfer mode. and also result in a number of host driver specific bugfixes: * icside - clip unsupported PIO5 mode down - fix unsupported/invalid modes being set in drive->current_speed * ide-cris - clip unsupported PIO5 and SWDMA0-2 modes down - clip DMA modes down for ATAPI devices - fix BUG() on unsupported/invalid modes * au1xxx-ide - clip unsupported PIO5, SWDMA0-2 and MWDMA0-2 (if BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=n) modes down * aec62xx - clip unsupported PIO5 and SWDMA0-2 modes down - clip DMA modes down for ATAPI devices - fix 0x00 being programmed as PIO timing for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * alim15x3 - clip DMA modes down for ATAPI devices (chipset revision == 0x20 only) - fix theoretical OOPS for 0x0F mode - fix unsupported/invalid modes being set on the device * amd74xx - clip unsupported SWDMA0-2 (on COBRA_7401 revs <= 7) modes down - fix random PIO timings being set for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * atiixp - clip unsupported PIO5 and SWDMA0-2 modes down - fix cached MWDMA mode being cleared for unsupported/invalid modes - fix PIO{0,2} timings being programmed for unsupported/invalid modes - fix theoretical OOPS for PIO5-6 and 0x0F modes - fix unsupported/invalid modes being set on the device * cmd64x - clip unsupported SWDMA0-2 modes down * cs5530 - clip unsupported PIO5 and SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device - fix BUG() on unsupported/invalid modes (which happened if the device accepted the setting) * cs5535 - clip unsupported PIO5 and SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device - fix theoretical OOPS for PIO5-6 and 0x0F modes * hpt34x - clip DMA modes down for ATAPI devices - fix invalid timings being programmed for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * hpt366 - clip unsupported PIO5 and SWDMA0-2 modes down - fix PIO0 timings being programmed for unsupported/invalid modes - fix DMA timings being cleared for MWDMA3-4 and 0x25-0x39 modes - fix unsupported/invalid modes being set on the device * it8213 - clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down * it821x - clip unsupported PIO5 and SWDMA0-2 modes down - clip DMA modes down for ATAPI devices (chipset in smart mode and revision 0x10 in pass-through mode) * jmicron - clip unsupported SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device * pdc202xx_new - clip unsupported PIO5 and SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device * pdc202xx_old - clip unsupported PIO5 mode down - fix incorrect timings being set for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * piix - clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down * sc1200 - clip unsupported PIO5 and SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device - fix BUG() on unsupported/invalid modes (which happened if the device accepted the setting) * scc_pata - clip unsupported PIO5, SWDMA0-2 and MWDMA0-2 modes down * serverworks - clip unsupported PIO5 and SWDMA0-2 modes down - fix DMA/UDMA timings/settings being cleared for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * siimage - clip unsupported PIO5 and SWDMA0-2 modes down - clip DMA modes down for ATAPI devices (SATA chipsets) * sis5513 - clip unsupported PIO5 mode down - fix BUG() on unsupported/invalid modes * sl82c105 - clip unsupported SWDMA0-2 modes down * slc90e66 - clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down * tc86c001 - clip unsupported PIO5 and SWDMA0-2 modes down - fix PIO0 timings being programmed for PIO5/0x0F/SWDMA0-2/0x13-0x19 modes - fix invalid 0x00 DMA timing being programmed for MWDMA3-4/0x25-0x39 modes - fix unsupported/invalid modes being set on the device * triflex - clip unsupported PIO5 mode down * via82cxxx - fix random PIO timings being set for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * pmac - clip unsupported PIO5 and SWDMA0-2 modes down * cmd640/ht6560b - clip DMA modes down (if CONFIG_BLK_DEV_IDEDMA=y) - fix PIO5 being clipped to PIO4 (if CONFIG_BLK_DEV_IDEDMA=n) * opti621 - clip DMA modes down (if CONFIG_BLK_DEV_IDEDMA=y) - clip unsupported PIO4 to PIO3 (if CONFIG_BLK_DEV_IDEDMA=n) While at it: * Use ide_rate_filter() in cs5520.c::cs5520_tune_chipset(). * Remove no longer needed checks from hpt366.c::hpt3{6,7}x_tune_chipset(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-11 15:53:59 -06:00
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 *);
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 *);
void ide_dma_timeout(ide_drive_t *);
#else
ide: DMA reporting and validity checking fixes (take 3) * ide_xfer_verbose() fixups: - beautify returned mode names - fix PIO5 reporting - make it return 'const char *' * Change printk() level from KERN_DEBUG to KERN_INFO in ide_find_dma_mode(). * Add ide_id_dma_bug() helper based on ide_dma_verbose() to check for invalid DMA info in identify block. * Use ide_id_dma_bug() in ide_tune_dma() and ide_driveid_update(). As a result DMA won't be tuned or will be disabled after tuning if device reports inconsistent info about enabled DMA mode (ide_dma_verbose() does the same checks while the IDE device is probed by ide-{cd,disk} device driver). * Remove no longer needed ide_dma_verbose(). This patch should fix the following problem with out-of-sync IDE messages reported by Nick Warne: hdd: ATAPI 48X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache<7>hdd: skipping word 93 validity check , UDMA(66) and later debugged by Mark Lord to be caused by: ide_dma_verbose() printk( ... "2048kB Cache"); eighty_ninty_three() printk(KERN_DEBUG "%s: skipping word 93 validity check\n"); ide_dma_verbose() printk(", UDMA(66)" Please note that as a result ide-{cd,disk} device drivers won't report the DMA speed used but this is intended since now DMA mode being used is always reported by IDE core code. v2: * fixes suggested by Randy: - use KERN_CONT for printk()-s in ide-{cd,disk}.c - don't remove argument name from ide_xfer_verbose() declaration v3: * Remove incorrect check for (id->field_valid & 1) from ide_id_dma_bug() (spotted by Sergei). * "XFER SLOW" -> "PIO SLOW" in ide_xfer_verbose() (suggested by Sergei). * Fix ide_find_dma_mode() to report the correct mode ('mode' after being limited by 'req_mode'). Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Nick Warne <nick@ukfsn.org> Cc: Mark Lord <lkml@rtr.ca> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-12-12 15:31:58 -07:00
static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; }
ide: mode limiting fixes for user requested speed changes * Add an extra argument to ide_max_dma_mode() for passing requested transfer mode. Use it as an upper limit when finding the best DMA for device/host. * Rename ide_max_dma_mode() to ide_find_dma_mode() and at the same time add ide_max_dma_mode() wrapper which passes XFER_UDMA_6 as a requested mode to ide_find_dma_mode(). Also add inline ide_find_dma_mode() version for CONFIG_BLK_DEV_IDEDMA=n case. * Pass requested transfer mode from ide_find_dma_mode() to ide_get_mode_mask() to avoid false warning from eighty_ninty_three(). * Use ide_find_dma_mode() to limit the user requested transfer mode in ide_rate_filter(). Also limit the requested mode by host max PIO mode. Above changes make ide_rate_filter() to: * Clip desired transfer mode down if it is invalid (values 0x0F, 0x13-0x19 and 0x25-0x39, values > 0x46 were already clipped down, same for values 0x25-0x39 but iff UDMA was not supported by the host). * Clip desired transfer mode down if it is currently unsupported by IDE core (PIO6 and MWDMA3-4, the latter were already clipped down but iff UDMA was not supported by the host). * Clip desired transfer mode down according to the host capabilities (UDMA modes were already clipped down but MWDMA/SWDMA/PIO weren't, also ->atapi_dma flag was not respected). * Clip desired transfer mode down according to the device capabilities (except PIO modes for now which require mode work) - shouldn't be a problem since ide_set_xfer_rate() is called _after_ device has accepted given transfer mode. and also result in a number of host driver specific bugfixes: * icside - clip unsupported PIO5 mode down - fix unsupported/invalid modes being set in drive->current_speed * ide-cris - clip unsupported PIO5 and SWDMA0-2 modes down - clip DMA modes down for ATAPI devices - fix BUG() on unsupported/invalid modes * au1xxx-ide - clip unsupported PIO5, SWDMA0-2 and MWDMA0-2 (if BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=n) modes down * aec62xx - clip unsupported PIO5 and SWDMA0-2 modes down - clip DMA modes down for ATAPI devices - fix 0x00 being programmed as PIO timing for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * alim15x3 - clip DMA modes down for ATAPI devices (chipset revision == 0x20 only) - fix theoretical OOPS for 0x0F mode - fix unsupported/invalid modes being set on the device * amd74xx - clip unsupported SWDMA0-2 (on COBRA_7401 revs <= 7) modes down - fix random PIO timings being set for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * atiixp - clip unsupported PIO5 and SWDMA0-2 modes down - fix cached MWDMA mode being cleared for unsupported/invalid modes - fix PIO{0,2} timings being programmed for unsupported/invalid modes - fix theoretical OOPS for PIO5-6 and 0x0F modes - fix unsupported/invalid modes being set on the device * cmd64x - clip unsupported SWDMA0-2 modes down * cs5530 - clip unsupported PIO5 and SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device - fix BUG() on unsupported/invalid modes (which happened if the device accepted the setting) * cs5535 - clip unsupported PIO5 and SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device - fix theoretical OOPS for PIO5-6 and 0x0F modes * hpt34x - clip DMA modes down for ATAPI devices - fix invalid timings being programmed for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * hpt366 - clip unsupported PIO5 and SWDMA0-2 modes down - fix PIO0 timings being programmed for unsupported/invalid modes - fix DMA timings being cleared for MWDMA3-4 and 0x25-0x39 modes - fix unsupported/invalid modes being set on the device * it8213 - clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down * it821x - clip unsupported PIO5 and SWDMA0-2 modes down - clip DMA modes down for ATAPI devices (chipset in smart mode and revision 0x10 in pass-through mode) * jmicron - clip unsupported SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device * pdc202xx_new - clip unsupported PIO5 and SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device * pdc202xx_old - clip unsupported PIO5 mode down - fix incorrect timings being set for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * piix - clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down * sc1200 - clip unsupported PIO5 and SWDMA0-2 modes down - fix unsupported/invalid modes being set on the device - fix BUG() on unsupported/invalid modes (which happened if the device accepted the setting) * scc_pata - clip unsupported PIO5, SWDMA0-2 and MWDMA0-2 modes down * serverworks - clip unsupported PIO5 and SWDMA0-2 modes down - fix DMA/UDMA timings/settings being cleared for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * siimage - clip unsupported PIO5 and SWDMA0-2 modes down - clip DMA modes down for ATAPI devices (SATA chipsets) * sis5513 - clip unsupported PIO5 mode down - fix BUG() on unsupported/invalid modes * sl82c105 - clip unsupported SWDMA0-2 modes down * slc90e66 - clip unsupported PIO5, SWDMA0-1 and MWDMA0 modes down * tc86c001 - clip unsupported PIO5 and SWDMA0-2 modes down - fix PIO0 timings being programmed for PIO5/0x0F/SWDMA0-2/0x13-0x19 modes - fix invalid 0x00 DMA timing being programmed for MWDMA3-4/0x25-0x39 modes - fix unsupported/invalid modes being set on the device * triflex - clip unsupported PIO5 mode down * via82cxxx - fix random PIO timings being set for unsupported/invalid modes - fix unsupported/invalid modes being set on the device * pmac - clip unsupported PIO5 and SWDMA0-2 modes down * cmd640/ht6560b - clip DMA modes down (if CONFIG_BLK_DEV_IDEDMA=y) - fix PIO5 being clipped to PIO4 (if CONFIG_BLK_DEV_IDEDMA=n) * opti621 - clip DMA modes down (if CONFIG_BLK_DEV_IDEDMA=y) - clip unsupported PIO4 to PIO3 (if CONFIG_BLK_DEV_IDEDMA=n) While at it: * Use ide_rate_filter() in cs5520.c::cs5520_tune_chipset(). * Remove no longer needed checks from hpt366.c::hpt3{6,7}x_tune_chipset(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-11 15:53:59 -06:00
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_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 *);
int ide_sysfs_register_port(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;
}
ide: DMA reporting and validity checking fixes (take 3) * ide_xfer_verbose() fixups: - beautify returned mode names - fix PIO5 reporting - make it return 'const char *' * Change printk() level from KERN_DEBUG to KERN_INFO in ide_find_dma_mode(). * Add ide_id_dma_bug() helper based on ide_dma_verbose() to check for invalid DMA info in identify block. * Use ide_id_dma_bug() in ide_tune_dma() and ide_driveid_update(). As a result DMA won't be tuned or will be disabled after tuning if device reports inconsistent info about enabled DMA mode (ide_dma_verbose() does the same checks while the IDE device is probed by ide-{cd,disk} device driver). * Remove no longer needed ide_dma_verbose(). This patch should fix the following problem with out-of-sync IDE messages reported by Nick Warne: hdd: ATAPI 48X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache<7>hdd: skipping word 93 validity check , UDMA(66) and later debugged by Mark Lord to be caused by: ide_dma_verbose() printk( ... "2048kB Cache"); eighty_ninty_three() printk(KERN_DEBUG "%s: skipping word 93 validity check\n"); ide_dma_verbose() printk(", UDMA(66)" Please note that as a result ide-{cd,disk} device drivers won't report the DMA speed used but this is intended since now DMA mode being used is always reported by IDE core code. v2: * fixes suggested by Randy: - use KERN_CONT for printk()-s in ide-{cd,disk}.c - don't remove argument name from ide_xfer_verbose() declaration v3: * Remove incorrect check for (id->field_valid & 1) from ide_id_dma_bug() (spotted by Sergei). * "XFER SLOW" -> "PIO SLOW" in ide_xfer_verbose() (suggested by Sergei). * Fix ide_find_dma_mode() to report the correct mode ('mode' after being limited by 'req_mode'). Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Nick Warne <nick@ukfsn.org> Cc: Mark Lord <lkml@rtr.ca> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-12-12 15:31:58 -07:00
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);
ide: move ide_config_drive_speed() calls to upper layers (take 2) * Convert {ide_hwif_t,ide_pci_device_t}->host_flag to be u16. * Add IDE_HFLAG_POST_SET_MODE host flag to indicate the need to program the host for the transfer mode after programming the device. Set it in au1xxx-ide, amd74xx, cs5530, cs5535, pdc202xx_new, sc1200, pmac and via82cxxx host drivers. * Add IDE_HFLAG_NO_SET_MODE host flag to indicate the need to completely skip programming of host/device for the transfer mode ("smart" hosts). Set it in it821x host driver and check it in ide_tune_dma(). * Add ide_set_pio_mode()/ide_set_dma_mode() helpers and convert all direct ->set_pio_mode/->speedproc users to use these helpers. * Move ide_config_drive_speed() calls from ->set_pio_mode/->speedproc methods to callers. * Rename ->speedproc method to ->set_dma_mode, make it void and update all implementations accordingly. * Update ide_set_xfer_rate() comments. * Unexport ide_config_drive_speed(). v2: * Fix issues noticed by Sergei: - export ide_set_dma_mode() instead of moving ->set_pio_mode abuse wrt to setting DMA modes from sc1200_set_pio_mode() to do_special() - check IDE_HFLAG_NO_SET_MODE in ide_tune_dma() - check for (hwif->set_pio_mode) == NULL in ide_set_pio_mode() - check for (hwif->set_dma_mode) == NULL in ide_set_dma_mode() - return -1 from ide_set_{pio,dma}_mode() if ->set_{pio,dma}_mode == NULL - don't set ->set_{pio,dma}_mode on it821x in "smart" mode - fix build problem in pmac.c - minor fixes in au1xxx-ide.c/cs5530.c/siimage.c - improve patch description Changes in behavior caused by this patch: - HDIO_SET_PIO_MODE ioctl would now return -ENOSYS for attempts to change PIO mode if it821x controller is in "smart" mode - removal of two debugging printk-s (from cs5530.c and sc1200.c) - transfer modes 0x00-0x07 passed from user space may be programmed twice on the device (not really an issue since 0x00 is not supported correctly by any host driver ATM, 0x01 is not supported at all and 0x02-0x07 are invalid) Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-13 09:47:51 -06:00
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);
}
char *ide_media_string(ide_drive_t *);
extern struct device_attribute ide_dev_attrs[];
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;
}
#define ide_port_for_each_dev(i, dev, port) \
for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)
#define ide_host_for_each_port(i, port, host) \
for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)
#endif /* _IDE_H */