* Copyright (C) 1994-2002 Linus Torvalds & authors
*/
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/hdreg.h>
#include <linux/bio.h>
#include <linux/device.h>
#include <linux/pci.h>
+#include <linux/completion.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/semaphore.h>
-/*
- * This is the multiple IDE interface driver, as evolved from hd.c.
- * It supports up to four IDE interfaces, on one or more IRQs (usually 14 & 15).
- * There can be up to two drives per interface, as per the ATA-2 spec.
- *
- * Primary i/f: ide0: major=3; (hda) minor=0; (hdb) minor=64
- * Secondary i/f: ide1: major=22; (hdc or hd1a) minor=0; (hdd or hd1b) minor=64
- * Tertiary i/f: ide2: major=33; (hde) minor=0; (hdf) minor=64
- * Quaternary i/f: ide3: major=34; (hdg) minor=0; (hdh) minor=64
- */
-
/******************************************************************************
* IDE driver configuration options (play with these as desired):
*
#define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
#define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */
-#define HOST(hwif,chipset) \
-{ \
- return ((hwif)->chipset == chipset) ? 1 : 0; \
-}
-
/*
* Check for an interrupt and acknowledge the interrupt status
*/
#include <asm/ide.h>
-#ifndef MAX_HWIFS
+#if !defined(MAX_HWIFS) || defined(CONFIG_EMBEDDED)
+#undef MAX_HWIFS
#define MAX_HWIFS CONFIG_IDE_MAX_HWIFS
#endif
} ata_nsector_t, ata_data_t, atapi_bcount_t, ata_index_t;
/*
- * ATA-IDE Error Register
- *
- * mark : Bad address mark
- * tzero : Couldn't find track 0
- * abrt : Aborted Command
- * mcr : Media Change Request
- * id : ID field not found
- * mce : Media Change Event
- * ecc : Uncorrectable ECC error
- * bdd : dual meaing
- */
-typedef union {
- unsigned all :8;
- struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned mark :1;
- unsigned tzero :1;
- unsigned abrt :1;
- unsigned mcr :1;
- unsigned id :1;
- unsigned mce :1;
- unsigned ecc :1;
- unsigned bdd :1;
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned bdd :1;
- unsigned ecc :1;
- unsigned mce :1;
- unsigned id :1;
- unsigned mcr :1;
- unsigned abrt :1;
- unsigned tzero :1;
- unsigned mark :1;
-#else
-#error "Please fix <asm/byteorder.h>"
-#endif
- } b;
-} ata_error_t;
-
-/*
* ATA-IDE Select Register, aka Device-Head
*
* head : always zeros here
} ata_status_t, atapi_status_t;
/*
- * ATA-IDE Control Register
- *
- * bit0 : Should be set to zero
- * nIEN : device INTRQ to host
- * SRST : host soft reset bit
- * bit3 : ATA-2 thingy, Should be set to 1
- * reserved456 : Reserved
- * HOB : 48-bit address ordering, High Ordered Bit
- */
-typedef union {
- unsigned all : 8;
- struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned bit0 : 1;
- unsigned nIEN : 1;
- unsigned SRST : 1;
- unsigned bit3 : 1;
- unsigned reserved456 : 3;
- unsigned HOB : 1;
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned HOB : 1;
- unsigned reserved456 : 3;
- unsigned bit3 : 1;
- unsigned SRST : 1;
- unsigned nIEN : 1;
- unsigned bit0 : 1;
-#else
-#error "Please fix <asm/byteorder.h>"
-#endif
- } b;
-} ata_control_t;
-
-/*
* ATAPI Feature Register
*
* dma : Using DMA or PIO
} atapi_error_t;
/*
- * ATAPI floppy Drive Select Register
- *
- * sam_lun : Logical unit number
- * reserved3 : Reserved
- * drv : The responding drive will be drive 0 (0) or drive 1 (1)
- * one5 : Should be set to 1
- * reserved6 : Reserved
- * one7 : Should be set to 1
- */
-typedef union {
- unsigned all :8;
- struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned sam_lun :3;
- unsigned reserved3 :1;
- unsigned drv :1;
- unsigned one5 :1;
- unsigned reserved6 :1;
- unsigned one7 :1;
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned one7 :1;
- unsigned reserved6 :1;
- unsigned one5 :1;
- unsigned drv :1;
- unsigned reserved3 :1;
- unsigned sam_lun :3;
-#else
-#error "Please fix <asm/byteorder.h>"
-#endif
- } b;
-} atapi_select_t;
-
-/*
* Status returned from various ide_ functions
*/
typedef enum {
struct ide_driver_s;
struct ide_settings_s;
+#ifdef CONFIG_BLK_DEV_IDEACPI
+struct ide_acpi_drive_link;
+struct ide_acpi_hwif_link;
+#endif
+
typedef struct ide_drive_s {
char name[4]; /* drive name, such as "hda" */
char driver_req[10]; /* requests specific driver */
struct hd_driveid *id; /* drive model identification info */
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
struct ide_settings_s *settings;/* /proc/ide/ drive settings */
- char devfs_name[64]; /* devfs crap */
struct hwif_s *hwif; /* actually (ide_hwif_t *) */
u8 waiting_for_dma; /* dma currently in progress */
u8 unmask; /* okay to unmask other irqs */
u8 bswap; /* byte swap data */
+ u8 noflush; /* don't attempt flushes */
u8 dsc_overlap; /* DSC overlap */
u8 nice1; /* give potential excess bandwidth */
unsigned noprobe : 1; /* from: hdx=noprobe */
unsigned removable : 1; /* 1 if need to do check_media_change */
unsigned attach : 1; /* needed for removable devices */
- unsigned is_flash : 1; /* 1 if probed as flash */
unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
unsigned no_unmask : 1; /* disallow setting unmask bit */
unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
u8 quirk_list; /* considered quirky, set for a specific host */
u8 init_speed; /* transfer rate set at boot */
- u8 pio_speed; /* unused by core, used by some drivers for fallback from DMA */
u8 current_speed; /* current transfer rate set */
+ u8 desired_speed; /* desired transfer rate set */
u8 dn; /* now wide spread use */
u8 wcache; /* status of write cache */
u8 acoustic; /* acoustic management */
unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */
unsigned int cyl; /* "real" number of cyls */
unsigned int drive_data; /* use by tuneproc/selectproc */
- unsigned int usage; /* current "open()" count for drive */
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 */
+#ifdef CONFIG_BLK_DEV_IDEACPI
+ struct ide_acpi_drive_link *acpidata;
+#endif
struct list_head list;
struct device gendev;
- struct semaphore gendev_rel_sem; /* to deal with device release() */
+ struct completion gendev_rel_comp; /* to deal with device release() */
} ide_drive_t;
#define to_ide_device(dev)container_of(dev, ide_drive_t, gendev)
int (*ide_dma_end)(ide_drive_t *drive);
int (*ide_dma_check)(ide_drive_t *drive);
int (*ide_dma_on)(ide_drive_t *drive);
- int (*ide_dma_off_quietly)(ide_drive_t *drive);
+ void (*dma_off_quietly)(ide_drive_t *drive);
int (*ide_dma_test_irq)(ide_drive_t *drive);
- int (*ide_dma_host_on)(ide_drive_t *drive);
- int (*ide_dma_host_off)(ide_drive_t *drive);
+ void (*ide_dma_clear_irq)(ide_drive_t *drive);
+ void (*dma_host_on)(ide_drive_t *drive);
+ void (*dma_host_off)(ide_drive_t *drive);
int (*ide_dma_lostirq)(ide_drive_t *drive);
int (*ide_dma_timeout)(ide_drive_t *drive);
void (*OUTB)(u8 addr, unsigned long port);
void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
void (*OUTW)(u16 addr, unsigned long port);
- void (*OUTL)(u32 addr, unsigned long port);
void (*OUTSW)(unsigned long port, void *addr, u32 count);
void (*OUTSL)(unsigned long port, void *addr, u32 count);
u8 (*INB)(unsigned long port);
u16 (*INW)(unsigned long port);
- u32 (*INL)(unsigned long port);
void (*INSW)(unsigned long port, void *addr, u32 count);
void (*INSL)(unsigned long port, void *addr, u32 count);
unsigned int cursg;
unsigned int cursg_ofs;
- int mmio; /* hosts iomio (0) or custom (2) select */
int rqsize; /* max sectors per request */
int irq; /* our irq number */
unsigned long dma_status; /* dma status register */
unsigned long dma_vendor3; /* dma vendor 3 register */
unsigned long dma_prdtable; /* actual prd table address */
- unsigned long dma_base2; /* extended base addr for dma ports */
- unsigned dma_extra; /* extra 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 noprobe : 1; /* don't probe for this interface */
unsigned present : 1; /* this interface exists */
unsigned hold : 1; /* this interface is always present */
unsigned udma_four : 1; /* 1=ATA-66 capable, 0=default */
unsigned no_lba48 : 1; /* 1 = cannot do LBA48 */
unsigned no_lba48_dma : 1; /* 1 = cannot do LBA48 DMA */
- unsigned no_dsc : 1; /* 0 default, 1 dsc_overlap disabled */
unsigned auto_poll : 1; /* supports nop auto-poll */
unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
+ unsigned no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */
+ unsigned err_stops_fifo : 1; /* 1=data FIFO is cleared by an error */
+ unsigned mmio : 1; /* host uses MMIO */
struct device gendev;
- struct semaphore gendev_rel_sem; /* To deal with device release() */
+ struct completion gendev_rel_comp; /* To deal with device release() */
void *hwif_data; /* extra hwif data */
unsigned dma;
- void (*led_act)(void *data, int rw);
-} ____cacheline_maxaligned_in_smp ide_hwif_t;
+#ifdef CONFIG_BLK_DEV_IDEACPI
+ struct ide_acpi_hwif_link *acpidata;
+#endif
+} ____cacheline_internodealigned_in_smp ide_hwif_t;
/*
* internal ide interrupt handler type
unsigned int sleeping : 1;
/* BOOL: polling active & poll_timeout field valid */
unsigned int polling : 1;
+ /* BOOL: in a polling reset situation. Must not trigger another reset yet */
+ unsigned int resetting : 1;
+
/* current drive */
ide_drive_t *drive;
/* ptr to current hwif in linked-list */
int (*expiry)(ide_drive_t *);
/* ide_system_bus_speed */
int pio_clock;
+ int req_gen;
+ int req_gen_timer;
unsigned char cmd_buf[4];
} ide_hwgroup_t;
int (*end_request)(ide_drive_t *, int, int);
ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
- int (*ioctl)(ide_drive_t *, struct inode *, struct file *, unsigned int, unsigned long);
ide_proc_entry_t *proc;
- void (*ata_prebuilder)(ide_drive_t *);
- void (*atapi_prebuilder)(ide_drive_t *);
struct device_driver gen_driver;
+ int (*probe)(ide_drive_t *);
+ void (*remove)(ide_drive_t *);
+ void (*shutdown)(ide_drive_t *);
} ide_driver_t;
+#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
+
int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, unsigned, unsigned long);
/*
extern int noautodma;
extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
-extern int __ide_end_request (ide_drive_t *drive, struct request *rq, int uptodate, int nrsecs);
+int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
+ int uptodate, int nr_sectors);
/*
* This is used on exit from the driver to designate the next irq handler
extern int ide_spin_wait_hwgroup(ide_drive_t *);
extern void ide_timer_expiry(unsigned long);
-extern irqreturn_t ide_intr(int irq, void *dev_id, struct pt_regs *regs);
+extern irqreturn_t ide_intr(int irq, void *dev_id);
extern void do_ide_request(request_queue_t *);
-extern void ide_init_subdrivers(void);
void ide_init_disk(struct gendisk *, ide_drive_t *);
extern int ideprobe_init(void);
extern void ide_scan_pcibus(int scan_direction) __init;
-extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner);
-#define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE)
-extern void ide_pci_unregister_driver(struct pci_driver *driver);
+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)
void ide_pci_setup_ports(struct pci_dev *, struct ide_pci_device_s *, int, ata_index_t *);
extern void ide_setup_pci_noise (struct pci_dev *dev, struct ide_pci_device_s *d);
enum {
/* Uses ISA control ports not PCI ones. */
IDEPCI_FLAG_ISA_PORTS = (1 << 0),
- IDEPCI_FLAG_FORCE_PDC = (1 << 1),
};
typedef struct ide_pci_device_s {
int __ide_dma_bad_drive(ide_drive_t *);
int __ide_dma_good_drive(ide_drive_t *);
int ide_use_dma(ide_drive_t *);
-int __ide_dma_off(ide_drive_t *);
+void ide_dma_off(ide_drive_t *);
void ide_dma_verbose(ide_drive_t *);
+int ide_set_dma(ide_drive_t *);
ide_startstop_t ide_dma_intr(ide_drive_t *);
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
extern int ide_release_dma(ide_hwif_t *);
extern void ide_setup_dma(ide_hwif_t *, unsigned long, unsigned int);
-extern int __ide_dma_host_off(ide_drive_t *);
-extern int __ide_dma_off_quietly(ide_drive_t *);
-extern int __ide_dma_host_on(ide_drive_t *);
+void ide_dma_host_off(ide_drive_t *);
+void ide_dma_off_quietly(ide_drive_t *);
+void ide_dma_host_on(ide_drive_t *);
extern int __ide_dma_on(ide_drive_t *);
extern int __ide_dma_check(ide_drive_t *);
extern int ide_dma_setup(ide_drive_t *);
#else
static inline int ide_use_dma(ide_drive_t *drive) { return 0; }
-static inline int __ide_dma_off(ide_drive_t *drive) { return 0; }
+static inline void ide_dma_off(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; }
#endif /* CONFIG_BLK_DEV_IDEDMA */
#ifndef CONFIG_BLK_DEV_IDEDMA_PCI
static inline void ide_release_dma(ide_hwif_t *drive) {;}
#endif
+#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);
+#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) { ; }
+#endif
+
extern int ide_hwif_request_regions(ide_hwif_t *hwif);
extern void ide_hwif_release_regions(ide_hwif_t* hwif);
extern void ide_unregister (unsigned int index);
extern char *ide_xfer_verbose(u8 xfer_rate);
extern void ide_toggle_bounce(ide_drive_t *drive, int on);
extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
+int ide_use_fast_pio(ide_drive_t *);
u8 ide_dump_status(ide_drive_t *, const char *, u8);
typedef struct ide_pio_timings_s {
int setup_time; /* Address setup (ns) minimum */
int active_time; /* Active pulse (ns) minimum */
- int cycle_time; /* Cycle time (ns) minimum = (setup + active + recovery) */
+ int cycle_time; /* Cycle time (ns) minimum = */
+ /* active + recovery (+ setup for some chips) */
} ide_pio_timings_t;
typedef struct ide_pio_data_s {
u8 pio_mode;
u8 use_iordy;
u8 overridden;
- u8 blacklisted;
unsigned int cycle_time;
} ide_pio_data_t;
* ide_drive_t->hwif: constant, no locking
*/
-#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable(); } while (0)
+#define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
extern struct bus_type ide_bus_type;
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