| #ifndef _IDE_H |
| #define _IDE_H |
| /* |
| * linux/include/linux/ide.h |
| * |
| * Copyright (C) 1994-2002 Linus Torvalds & authors |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/ioport.h> |
| #include <linux/ata.h> |
| #include <linux/blkdev.h> |
| #include <linux/proc_fs.h> |
| #include <linux/interrupt.h> |
| #include <linux/bitops.h> |
| #include <linux/bio.h> |
| #include <linux/device.h> |
| #include <linux/pci.h> |
| #include <linux/completion.h> |
| #include <linux/pm.h> |
| #ifdef CONFIG_BLK_DEV_IDEACPI |
| #include <acpi/acpi.h> |
| #endif |
| #include <asm/byteorder.h> |
| #include <asm/system.h> |
| #include <asm/io.h> |
| #include <asm/mutex.h> |
| |
| #if defined(CONFIG_CRIS) || defined(CONFIG_FRV) |
| # define SUPPORT_VLB_SYNC 0 |
| #else |
| # define SUPPORT_VLB_SYNC 1 |
| #endif |
| |
| /* |
| * Used to indicate "no IRQ", should be a value that cannot be an IRQ |
| * number. |
| */ |
| |
| #define IDE_NO_IRQ (-1) |
| |
| typedef unsigned char byte; /* used everywhere */ |
| |
| /* |
| * Probably not wise to fiddle with these |
| */ |
| #define ERROR_MAX 8 /* Max read/write errors per sector */ |
| #define ERROR_RESET 3 /* Reset controller every 4th retry */ |
| #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */ |
| |
| /* |
| * state flags |
| */ |
| |
| #define DMA_PIO_RETRY 1 /* retrying in PIO */ |
| |
| #define HWIF(drive) ((ide_hwif_t *)((drive)->hwif)) |
| #define HWGROUP(drive) ((ide_hwgroup_t *)(HWIF(drive)->hwgroup)) |
| |
| /* |
| * Definitions for accessing IDE controller registers |
| */ |
| #define IDE_NR_PORTS (10) |
| |
| struct ide_io_ports { |
| unsigned long data_addr; |
| |
| union { |
| unsigned long error_addr; /* read: error */ |
| unsigned long feature_addr; /* write: feature */ |
| }; |
| |
| unsigned long nsect_addr; |
| unsigned long lbal_addr; |
| unsigned long lbam_addr; |
| unsigned long lbah_addr; |
| |
| unsigned long device_addr; |
| |
| union { |
| unsigned long status_addr; /* read: status */ |
| unsigned long command_addr; /* write: command */ |
| }; |
| |
| unsigned long ctl_addr; |
| |
| unsigned long irq_addr; |
| }; |
| |
| #define OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good)) |
| |
| #define BAD_R_STAT (ATA_BUSY | ATA_ERR) |
| #define BAD_W_STAT (BAD_R_STAT | ATA_DF) |
| #define BAD_STAT (BAD_R_STAT | ATA_DRQ) |
| #define DRIVE_READY (ATA_DRDY | ATA_DSC) |
| |
| #define BAD_CRC (ATA_ABORTED | ATA_ICRC) |
| |
| #define SATA_NR_PORTS (3) /* 16 possible ?? */ |
| |
| #define SATA_STATUS_OFFSET (0) |
| #define SATA_ERROR_OFFSET (1) |
| #define SATA_CONTROL_OFFSET (2) |
| |
| /* |
| * Our Physical Region Descriptor (PRD) table should be large enough |
| * to handle the biggest I/O request we are likely to see. Since requests |
| * can have no more than 256 sectors, and since the typical blocksize is |
| * two or more sectors, we could get by with a limit of 128 entries here for |
| * the usual worst case. Most requests seem to include some contiguous blocks, |
| * further reducing the number of table entries required. |
| * |
| * The driver reverts to PIO mode for individual requests that exceed |
| * this limit (possible with 512 byte blocksizes, eg. MSDOS f/s), so handling |
| * 100% of all crazy scenarios here is not necessary. |
| * |
| * As it turns out though, we must allocate a full 4KB page for this, |
| * so the two PRD tables (ide0 & ide1) will each get half of that, |
| * allowing each to have about 256 entries (8 bytes each) from this. |
| */ |
| #define PRD_BYTES 8 |
| #define PRD_ENTRIES 256 |
| |
| /* |
| * Some more useful definitions |
| */ |
| #define PARTN_BITS 6 /* number of minor dev bits for partitions */ |
| #define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */ |
| #define SECTOR_SIZE 512 |
| |
| #define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t))) |
| |
| /* |
| * Timeouts for various operations: |
| */ |
| enum { |
| /* spec allows up to 20ms */ |
| WAIT_DRQ = HZ / 10, /* 100ms */ |
| /* some laptops are very slow */ |
| WAIT_READY = 5 * HZ, /* 5s */ |
| /* should be less than 3ms (?), if all ATAPI CD is closed at boot */ |
| WAIT_PIDENTIFY = 10 * HZ, /* 10s */ |
| /* worst case when spinning up */ |
| WAIT_WORSTCASE = 30 * HZ, /* 30s */ |
| /* maximum wait for an IRQ to happen */ |
| WAIT_CMD = 10 * HZ, /* 10s */ |
| /* Some drives require a longer IRQ timeout. */ |
| WAIT_FLOPPY_CMD = 50 * HZ, /* 50s */ |
| /* |
| * Some drives (for example, Seagate STT3401A Travan) require a very |
| * long timeout, because they don't return an interrupt or clear their |
| * BSY bit until after the command completes (even retension commands). |
| */ |
| WAIT_TAPE_CMD = 900 * HZ, /* 900s */ |
| /* minimum sleep time */ |
| WAIT_MIN_SLEEP = HZ / 50, /* 20ms */ |
| }; |
| |
| /* |
| * Op codes for special requests to be handled by ide_special_rq(). |
| * Values should be in the range of 0x20 to 0x3f. |
| */ |
| #define REQ_DRIVE_RESET 0x20 |
| |
| /* |
| * Check for an interrupt and acknowledge the interrupt status |
| */ |
| struct hwif_s; |
| typedef int (ide_ack_intr_t)(struct hwif_s *); |
| |
| /* |
| * hwif_chipset_t is used to keep track of the specific hardware |
| * chipset used by each IDE interface, if known. |
| */ |
| enum { ide_unknown, ide_generic, ide_pci, |
| ide_cmd640, ide_dtc2278, ide_ali14xx, |
| ide_qd65xx, ide_umc8672, ide_ht6560b, |
| ide_rz1000, ide_trm290, |
| ide_cmd646, ide_cy82c693, ide_4drives, |
| ide_pmac, ide_acorn, |
| ide_au1xxx, ide_palm3710 |
| }; |
| |
| typedef u8 hwif_chipset_t; |
| |
| /* |
| * Structure to hold all information about the location of this port |
| */ |
| typedef struct hw_regs_s { |
| union { |
| struct ide_io_ports io_ports; |
| unsigned long io_ports_array[IDE_NR_PORTS]; |
| }; |
| |
| int irq; /* our irq number */ |
| ide_ack_intr_t *ack_intr; /* acknowledge interrupt */ |
| hwif_chipset_t chipset; |
| struct device *dev, *parent; |
| unsigned long config; |
| } hw_regs_t; |
| |
| void ide_init_port_data(struct hwif_s *, unsigned int); |
| void ide_init_port_hw(struct hwif_s *, hw_regs_t *); |
| |
| static inline void ide_std_init_ports(hw_regs_t *hw, |
| unsigned long io_addr, |
| unsigned long ctl_addr) |
| { |
| unsigned int i; |
| |
| for (i = 0; i <= 7; i++) |
| hw->io_ports_array[i] = io_addr++; |
| |
| hw->io_ports.ctl_addr = ctl_addr; |
| } |
| |
| /* for IDE PCI controllers in legacy mode, temporary */ |
| static inline int __ide_default_irq(unsigned long base) |
| { |
| switch (base) { |
| #ifdef CONFIG_IA64 |
| case 0x1f0: return isa_irq_to_vector(14); |
| case 0x170: return isa_irq_to_vector(15); |
| #else |
| case 0x1f0: return 14; |
| case 0x170: return 15; |
| #endif |
| } |
| return 0; |
| } |
| |
| #if defined(CONFIG_ARM) || defined(CONFIG_FRV) || defined(CONFIG_M68K) || \ |
| defined(CONFIG_MIPS) || defined(CONFIG_MN10300) || defined(CONFIG_PARISC) \ |
| || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || defined(CONFIG_SPARC64) |
| #include <asm/ide.h> |
| #else |
| #include <asm-generic/ide_iops.h> |
| #endif |
| |
| #define MAX_HWIFS 10 |
| |
| /* Currently only m68k, apus and m8xx need it */ |
| #ifndef IDE_ARCH_ACK_INTR |
| # define ide_ack_intr(hwif) (1) |
| #endif |
| |
| /* Currently only Atari needs it */ |
| #ifndef IDE_ARCH_LOCK |
| # define ide_release_lock() do {} while (0) |
| # define ide_get_lock(hdlr, data) do {} while (0) |
| #endif /* IDE_ARCH_LOCK */ |
| |
| /* |
| * Now for the data we need to maintain per-drive: ide_drive_t |
| */ |
| |
| #define ide_scsi 0x21 |
| #define ide_disk 0x20 |
| #define ide_optical 0x7 |
| #define ide_cdrom 0x5 |
| #define ide_tape 0x1 |
| #define ide_floppy 0x0 |
| |
| /* |
| * Special Driver Flags |
| * |
| * set_geometry : respecify drive geometry |
| * recalibrate : seek to cyl 0 |
| * set_multmode : set multmode count |
| * set_tune : tune interface for drive |
| * serviced : service command |
| * reserved : unused |
| */ |
| typedef union { |
| unsigned all : 8; |
| struct { |
| unsigned set_geometry : 1; |
| unsigned recalibrate : 1; |
| unsigned set_multmode : 1; |
| unsigned set_tune : 1; |
| unsigned serviced : 1; |
| unsigned reserved : 3; |
| } b; |
| } special_t; |
| |
| /* |
| * ATA-IDE Select Register, aka Device-Head |
| * |
| * head : always zeros here |
| * unit : drive select number: 0/1 |
| * bit5 : always 1 |
| * lba : using LBA instead of CHS |
| * bit7 : always 1 |
| */ |
| typedef union { |
| unsigned all : 8; |
| struct { |
| #if defined(__LITTLE_ENDIAN_BITFIELD) |
| unsigned head : 4; |
| unsigned unit : 1; |
| unsigned bit5 : 1; |
| unsigned lba : 1; |
| unsigned bit7 : 1; |
| #elif defined(__BIG_ENDIAN_BITFIELD) |
| unsigned bit7 : 1; |
| unsigned lba : 1; |
| unsigned bit5 : 1; |
| unsigned unit : 1; |
| unsigned head : 4; |
| #else |
| #error "Please fix <asm/byteorder.h>" |
| #endif |
| } b; |
| } select_t, ata_select_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; |
| |
| struct ide_devset; |
| struct ide_driver_s; |
| |
| #ifdef CONFIG_BLK_DEV_IDEACPI |
| struct ide_acpi_drive_link; |
| struct ide_acpi_hwif_link; |
| #endif |
| |
| /* ATAPI device flags */ |
| enum { |
| IDE_AFLAG_DRQ_INTERRUPT = (1 << 0), |
| IDE_AFLAG_MEDIA_CHANGED = (1 << 1), |
| /* Drive cannot lock the door. */ |
| IDE_AFLAG_NO_DOORLOCK = (1 << 2), |
| |
| /* ide-cd */ |
| /* Drive cannot eject the disc. */ |
| IDE_AFLAG_NO_EJECT = (1 << 3), |
| /* Drive is a pre ATAPI 1.2 drive. */ |
| IDE_AFLAG_PRE_ATAPI12 = (1 << 4), |
| /* TOC addresses are in BCD. */ |
| IDE_AFLAG_TOCADDR_AS_BCD = (1 << 5), |
| /* TOC track numbers are in BCD. */ |
| IDE_AFLAG_TOCTRACKS_AS_BCD = (1 << 6), |
| /* |
| * Drive does not provide data in multiples of SECTOR_SIZE |
| * when more than one interrupt is needed. |
| */ |
| IDE_AFLAG_LIMIT_NFRAMES = (1 << 7), |
| /* Seeking in progress. */ |
| IDE_AFLAG_SEEKING = (1 << 8), |
| /* Saved TOC information is current. */ |
| IDE_AFLAG_TOC_VALID = (1 << 9), |
| /* We think that the drive door is locked. */ |
| IDE_AFLAG_DOOR_LOCKED = (1 << 10), |
| /* SET_CD_SPEED command is unsupported. */ |
| IDE_AFLAG_NO_SPEED_SELECT = (1 << 11), |
| IDE_AFLAG_VERTOS_300_SSD = (1 << 12), |
| IDE_AFLAG_VERTOS_600_ESD = (1 << 13), |
| IDE_AFLAG_SANYO_3CD = (1 << 14), |
| IDE_AFLAG_FULL_CAPS_PAGE = (1 << 15), |
| IDE_AFLAG_PLAY_AUDIO_OK = (1 << 16), |
| IDE_AFLAG_LE_SPEED_FIELDS = (1 << 17), |
| |
| /* ide-floppy */ |
| /* Format in progress */ |
| IDE_AFLAG_FORMAT_IN_PROGRESS = (1 << 18), |
| /* Avoid commands not supported in Clik drive */ |
| IDE_AFLAG_CLIK_DRIVE = (1 << 19), |
| /* Requires BH algorithm for packets */ |
| IDE_AFLAG_ZIP_DRIVE = (1 << 20), |
| /* Write protect */ |
| IDE_AFLAG_WP = (1 << 21), |
| /* Supports format progress report */ |
| IDE_AFLAG_SRFP = (1 << 22), |
| |
| /* ide-tape */ |
| IDE_AFLAG_IGNORE_DSC = (1 << 23), |
| /* 0 When the tape position is unknown */ |
| IDE_AFLAG_ADDRESS_VALID = (1 << 24), |
| /* Device already opened */ |
| IDE_AFLAG_BUSY = (1 << 25), |
| /* Attempt to auto-detect the current user block size */ |
| IDE_AFLAG_DETECT_BS = (1 << 26), |
| /* Currently on a filemark */ |
| IDE_AFLAG_FILEMARK = (1 << 27), |
| /* 0 = no tape is loaded, so we don't rewind after ejecting */ |
| IDE_AFLAG_MEDIUM_PRESENT = (1 << 28), |
| |
| IDE_AFLAG_NO_AUTOCLOSE = (1 << 29), |
| }; |
| |
| struct ide_drive_s { |
| char name[4]; /* drive name, such as "hda" */ |
| char driver_req[10]; /* requests specific driver */ |
| |
| struct request_queue *queue; /* request queue */ |
| |
| struct request *rq; /* current request */ |
| struct ide_drive_s *next; /* circular list of hwgroup drives */ |
| void *driver_data; /* extra driver data */ |
| u16 *id; /* identification info */ |
| #ifdef CONFIG_IDE_PROC_FS |
| struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
| const struct ide_devset **settings; /* /proc/ide/ drive settings */ |
| #endif |
| struct hwif_s *hwif; /* actually (ide_hwif_t *) */ |
| |
| unsigned long sleep; /* sleep until this time */ |
| unsigned long service_start; /* time we started last request */ |
| unsigned long service_time; /* service time of last request */ |
| unsigned long timeout; /* max time to wait for irq */ |
| |
| special_t special; /* special action flags */ |
| select_t select; /* basic drive/head select reg value */ |
| |
| u8 retry_pio; /* retrying dma capable host in pio */ |
| u8 state; /* retry state */ |
| u8 waiting_for_dma; /* dma currently in progress */ |
| |
| unsigned keep_settings : 1; /* restore settings after drive reset */ |
| unsigned using_dma : 1; /* disk is using dma for read/write */ |
| unsigned unmask : 1; /* okay to unmask other irqs */ |
| unsigned noflush : 1; /* don't attempt flushes */ |
| unsigned dsc_overlap : 1; /* DSC overlap */ |
| unsigned nice1 : 1; /* give potential excess bandwidth */ |
| unsigned present : 1; /* drive is physically present */ |
| unsigned dead : 1; /* device ejected hint */ |
| unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */ |
| 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 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 */ |
| unsigned doorlocking : 1; /* for removable only: door lock/unlock works */ |
| unsigned nodma : 1; /* disallow DMA */ |
| unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */ |
| unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */ |
| unsigned sleeping : 1; /* 1=sleeping & sleep field valid */ |
| unsigned post_reset : 1; |
| unsigned udma33_warned : 1; |
| unsigned addressing : 2; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */ |
| unsigned wcache : 1; /* status of write cache */ |
| unsigned nowerr : 1; /* used for ignoring ATA_DF */ |
| |
| 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 tune_req; /* requested drive tuning 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 */ |
| |
| unsigned int bios_cyl; /* BIOS/fdisk/LILO number of cyls */ |
| unsigned int cyl; /* "real" number of cyls */ |
| unsigned int drive_data; /* used by set_pio_mode/selectproc */ |
| unsigned int failures; /* current failure count */ |
| unsigned int max_failures; /* maximum allowed failure count */ |
| u64 probed_capacity;/* initial reported media capacity (ide-cd only currently) */ |
| |
| u64 capacity64; /* total number of sectors */ |
| |
| int lun; /* logical unit */ |
| int crc_count; /* crc counter to reduce drive speed */ |
| #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() */ |
| |
| /* callback for packet commands */ |
| void (*pc_callback)(struct ide_drive_s *); |
| |
| unsigned long atapi_flags; |
| }; |
| |
| typedef struct ide_drive_s ide_drive_t; |
| |
| #define to_ide_device(dev)container_of(dev, ide_drive_t, gendev) |
| |
| struct ide_task_s; |
| struct ide_port_info; |
| |
| struct ide_tp_ops { |
| void (*exec_command)(struct hwif_s *, u8); |
| u8 (*read_status)(struct hwif_s *); |
| u8 (*read_altstatus)(struct hwif_s *); |
| u8 (*read_sff_dma_status)(struct hwif_s *); |
| |
| void (*set_irq)(struct hwif_s *, int); |
| |
| void (*tf_load)(ide_drive_t *, struct ide_task_s *); |
| void (*tf_read)(ide_drive_t *, struct ide_task_s *); |
| |
| void (*input_data)(ide_drive_t *, struct request *, void *, |
| unsigned int); |
| void (*output_data)(ide_drive_t *, struct request *, void *, |
| unsigned int); |
| }; |
| |
| extern const struct ide_tp_ops default_tp_ops; |
| |
| /** |
| * struct ide_port_ops - IDE port operations |
| * |
| * @init_dev: host specific initialization of a device |
| * @set_pio_mode: routine to program host for PIO mode |
| * @set_dma_mode: routine to program host for DMA mode |
| * @selectproc: tweaks hardware to select drive |
| * @reset_poll: chipset polling based on hba specifics |
| * @pre_reset: chipset specific changes to default for device-hba resets |
| * @resetproc: routine to reset controller after a disk reset |
| * @maskproc: special host masking for drive selection |
| * @quirkproc: check host's drive quirk list |
| * |
| * @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 *); |
| |
| u8 (*mdma_filter)(ide_drive_t *); |
| u8 (*udma_filter)(ide_drive_t *); |
| |
| u8 (*cable_detect)(struct hwif_s *); |
| }; |
| |
| struct ide_dma_ops { |
| void (*dma_host_set)(struct ide_drive_s *, int); |
| int (*dma_setup)(struct ide_drive_s *); |
| void (*dma_exec_cmd)(struct ide_drive_s *, u8); |
| void (*dma_start)(struct ide_drive_s *); |
| int (*dma_end)(struct ide_drive_s *); |
| int (*dma_test_irq)(struct ide_drive_s *); |
| void (*dma_lost_irq)(struct ide_drive_s *); |
| void (*dma_timeout)(struct ide_drive_s *); |
| }; |
| |
| struct ide_host; |
| |
| typedef struct hwif_s { |
| struct hwif_s *next; /* for linked-list in ide_hwgroup_t */ |
| struct hwif_s *mate; /* other hwif from same PCI chip */ |
| struct hwgroup_s *hwgroup; /* actually (ide_hwgroup_t *) */ |
| struct proc_dir_entry *proc; /* /proc/ide/ directory entry */ |
| |
| struct ide_host *host; |
| |
| char name[6]; /* name of interface, eg. "ide0" */ |
| |
| struct ide_io_ports io_ports; |
| |
| unsigned long sata_scr[SATA_NR_PORTS]; |
| |
| ide_drive_t drives[MAX_DRIVES]; /* drive info */ |
| |
| u8 major; /* our major number */ |
| u8 index; /* 0 for ide0; 1 for ide1; ... */ |
| u8 channel; /* for dual-port chips: 0=primary, 1=secondary */ |
| |
| u32 host_flags; |
| |
| u8 pio_mask; |
| |
| u8 ultra_mask; |
| u8 mwdma_mask; |
| u8 swdma_mask; |
| |
| u8 cbl; /* cable type */ |
| |
| hwif_chipset_t chipset; /* sub-module for tuning.. */ |
| |
| struct device *dev; |
| |
| ide_ack_intr_t *ack_intr; |
| |
| void (*rw_disk)(ide_drive_t *, struct request *); |
| |
| const struct ide_tp_ops *tp_ops; |
| const struct ide_port_ops *port_ops; |
| const struct ide_dma_ops *dma_ops; |
| |
| void (*ide_dma_clear_irq)(ide_drive_t *drive); |
| |
| /* dma physical region descriptor table (cpu view) */ |
| unsigned int *dmatable_cpu; |
| /* dma physical region descriptor table (dma view) */ |
| dma_addr_t dmatable_dma; |
| /* 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; |
| |
| unsigned int nsect; |
| unsigned int nleft; |
| struct scatterlist *cursg; |
| unsigned int cursg_ofs; |
| |
| int rqsize; /* max sectors per request */ |
| int irq; /* our irq number */ |
| |
| unsigned long dma_base; /* base addr for dma ports */ |
| |
| unsigned long config_data; /* for use by chipset-specific code */ |
| unsigned long select_data; /* for use by chipset-specific code */ |
| |
| unsigned long extra_base; /* extra addr for dma ports */ |
| unsigned extra_ports; /* number of extra dma ports */ |
| |
| unsigned present : 1; /* this interface exists */ |
| unsigned serialized : 1; /* serialized all channel operation */ |
| unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */ |
| unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */ |
| |
| struct device gendev; |
| struct device *portdev; |
| |
| struct completion gendev_rel_comp; /* To deal with device release() */ |
| |
| void *hwif_data; /* extra hwif data */ |
| |
| unsigned dma; |
| |
| #ifdef CONFIG_BLK_DEV_IDEACPI |
| struct ide_acpi_hwif_link *acpidata; |
| #endif |
| } ____cacheline_internodealigned_in_smp ide_hwif_t; |
| |
| struct ide_host { |
| ide_hwif_t *ports[MAX_HWIFS]; |
| unsigned int n_ports; |
| struct device *dev[2]; |
| unsigned int (*init_chipset)(struct pci_dev *); |
| unsigned long host_flags; |
| void *host_priv; |
| }; |
| |
| /* |
| * internal ide interrupt handler type |
| */ |
| typedef ide_startstop_t (ide_handler_t)(ide_drive_t *); |
| typedef int (ide_expiry_t)(ide_drive_t *); |
| |
| /* used by ide-cd, ide-floppy, etc. */ |
| typedef void (xfer_func_t)(ide_drive_t *, struct request *rq, void *, unsigned); |
| |
| typedef struct hwgroup_s { |
| /* irq handler, if active */ |
| ide_startstop_t (*handler)(ide_drive_t *); |
| |
| /* BOOL: protects all fields below */ |
| volatile int busy; |
| /* BOOL: wake us up on timer expiry */ |
| unsigned int sleeping : 1; |
| /* BOOL: polling active & poll_timeout field valid */ |
| unsigned int polling : 1; |
| |
| /* current drive */ |
| ide_drive_t *drive; |
| /* ptr to current hwif in linked-list */ |
| ide_hwif_t *hwif; |
| |
| /* current request */ |
| struct request *rq; |
| |
| /* failsafe timer */ |
| struct timer_list timer; |
| /* timeout value during long polls */ |
| unsigned long poll_timeout; |
| /* queried upon timeouts */ |
| int (*expiry)(ide_drive_t *); |
| |
| int req_gen; |
| int req_gen_timer; |
| } ide_hwgroup_t; |
| |
| typedef struct ide_driver_s ide_driver_t; |
| |
| extern struct mutex ide_setting_mtx; |
| |
| int get_io_32bit(ide_drive_t *); |
| int set_io_32bit(ide_drive_t *, int); |
| int get_ksettings(ide_drive_t *); |
| int set_ksettings(ide_drive_t *, int); |
| int set_pio_mode(ide_drive_t *, int); |
| int get_unmaskirq(ide_drive_t *); |
| int set_unmaskirq(ide_drive_t *, int); |
| int get_using_dma(ide_drive_t *); |
| int set_using_dma(ide_drive_t *, int); |
| |
| #define ide_devset_get(name, field) \ |
| int get_##name(ide_drive_t *drive) \ |
| { \ |
| return drive->field; \ |
| } |
| |
| #define ide_devset_set(name, field) \ |
| int set_##name(ide_drive_t *drive, int arg) \ |
| { \ |
| drive->field = arg; \ |
| return 0; \ |
| } |
| |
| /* ATAPI packet command flags */ |
| enum { |
| /* set when an error is considered normal - no retry (ide-tape) */ |
| PC_FLAG_ABORT = (1 << 0), |
| PC_FLAG_SUPPRESS_ERROR = (1 << 1), |
| PC_FLAG_WAIT_FOR_DSC = (1 << 2), |
| PC_FLAG_DMA_OK = (1 << 3), |
| PC_FLAG_DMA_IN_PROGRESS = (1 << 4), |
| PC_FLAG_DMA_ERROR = (1 << 5), |
| PC_FLAG_WRITING = (1 << 6), |
| /* command timed out */ |
| PC_FLAG_TIMEDOUT = (1 << 7), |
| }; |
| |
| /* |
| * With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes. |
| * This is used for several packet commands (not for READ/WRITE commands). |
| */ |
| #define IDE_PC_BUFFER_SIZE 256 |
| |
| struct ide_atapi_pc { |
| /* actual packet bytes */ |
| u8 c[12]; |
| /* incremented on each retry */ |
| int retries; |
| int error; |
| |
| /* bytes to transfer */ |
| int req_xfer; |
| /* bytes actually transferred */ |
| int xferred; |
| |
| /* data buffer */ |
| u8 *buf; |
| /* current buffer position */ |
| u8 *cur_pos; |
| int buf_size; |
| /* missing/available data on the current buffer */ |
| int b_count; |
| |
| /* the corresponding request */ |
| struct request *rq; |
| |
| unsigned long flags; |
| |
| /* |
| * those are more or less driver-specific and some of them are subject |
| * to change/removal later. |
| */ |
| u8 pc_buf[IDE_PC_BUFFER_SIZE]; |
| |
| /* idetape only */ |
| struct idetape_bh *bh; |
| char *b_data; |
| |
| /* idescsi only for now */ |
| struct scatterlist *sg; |
| unsigned int sg_cnt; |
| |
| struct scsi_cmnd *scsi_cmd; |
| void (*done) (struct scsi_cmnd *); |
| |
| unsigned long timeout; |
| }; |
| |
| #ifdef CONFIG_IDE_PROC_FS |
| /* |
| * configurable drive settings |
| */ |
| |
| #define S_READ (1 << 0) |
| #define S_WRITE (1 << 1) |
| #define S_RW (S_READ | S_WRITE) |
| #define S_NOLOCK (1 << 2) |
| |
| struct ide_devset { |
| const char *name; |
| unsigned int flags; |
| int min, max; |
| int (*get)(ide_drive_t *); |
| int (*set)(ide_drive_t *, int); |
| int (*mulf)(ide_drive_t *); |
| int (*divf)(ide_drive_t *); |
| }; |
| |
| #define __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) { \ |
| .name = __stringify(_name), \ |
| .flags = _flags, \ |
| .min = _min, \ |
| .max = _max, \ |
| .get = _get, \ |
| .set = _set, \ |
| .mulf = _mulf, \ |
| .divf = _divf, \ |
| } |
| |
| #define __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) \ |
| static const struct ide_devset ide_devset_##_name = \ |
| __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) |
| |
| #define IDE_DEVSET(_name, _flags, _min, _max, _get, _set) \ |
| __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, NULL, NULL) |
| |
| #define ide_devset_rw_nolock(_name, _min, _max, _func) \ |
| IDE_DEVSET(_name, S_RW | S_NOLOCK, _min, _max, get_##_func, set_##_func) |
| |
| #define ide_devset_w_nolock(_name, _min, _max, _func) \ |
| IDE_DEVSET(_name, S_WRITE | S_NOLOCK, _min, _max, NULL, set_##_func) |
| |
| #define ide_devset_rw(_name, _min, _max, _field) \ |
| static ide_devset_get(_name, _field); \ |
| static ide_devset_set(_name, _field); \ |
| IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name) |
| |
| #define ide_devset_r(_name, _min, _max, _field) \ |
| ide_devset_get(_name, _field) \ |
| IDE_DEVSET(_name, S_READ, _min, _max, get_##_name, NULL) |
| |
| /* |
| * /proc/ide interface |
| */ |
| typedef struct { |
| const char *name; |
| mode_t mode; |
| read_proc_t *read_proc; |
| write_proc_t *write_proc; |
| } ide_proc_entry_t; |
| |
| void proc_ide_create(void); |
| void proc_ide_destroy(void); |
| void ide_proc_register_port(ide_hwif_t *); |
| void ide_proc_port_register_devices(ide_hwif_t *); |
| void ide_proc_unregister_device(ide_drive_t *); |
| void ide_proc_unregister_port(ide_hwif_t *); |
| void ide_proc_register_driver(ide_drive_t *, ide_driver_t *); |
| void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *); |
| |
| read_proc_t proc_ide_read_capacity; |
| read_proc_t proc_ide_read_geometry; |
| |
| /* |
| * Standard exit stuff: |
| */ |
| #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) \ |
| { \ |
| len -= off; \ |
| if (len < count) { \ |
| *eof = 1; \ |
| if (len <= 0) \ |
| return 0; \ |
| } else \ |
| len = count; \ |
| *start = page + off; \ |
| return len; \ |
| } |
| #else |
| static inline void proc_ide_create(void) { ; } |
| static inline void proc_ide_destroy(void) { ; } |
| static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; } |
| static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; } |
| static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; } |
| static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; } |
| static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; } |
| static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; } |
| #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0; |
| #endif |
| |
| /* |
| * Power Management step value (rq->pm->pm_step). |
| * |
| * The step value starts at 0 (ide_pm_state_start_suspend) for a |
| * suspend operation or 1000 (ide_pm_state_start_resume) for a |
| * resume operation. |
| * |
| * For each step, the core calls the subdriver 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, start_power_step() will issue a taskfile request with |
| * do_rw_taskfile(). |
| * |
| * Upon reception of the interrupt, the core will call 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 |
| * start_power_step for the new step value, unless step have been set to |
| * ide_power_state_completed. |
| * |
| * Subdrivers are expected to define their own additional power |
| * steps from 1..999 for suspend and from 1001..1999 for resume, |
| * other values are reserved for future use. |
| */ |
| |
| enum { |
| ide_pm_state_completed = -1, |
| ide_pm_state_start_suspend = 0, |
| ide_pm_state_start_resume = 1000, |
| }; |
| |
| /* |
| * Subdrivers support. |
| * |
| * The gendriver.owner field should be set to the module owner of this driver. |
| * The gendriver.name field should be set to the name of this driver |
| */ |
| struct ide_driver_s { |
| const char *version; |
| u8 media; |
| ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t); |
| int (*end_request)(ide_drive_t *, int, int); |
| ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8); |
| struct device_driver gen_driver; |
| int (*probe)(ide_drive_t *); |
| void (*remove)(ide_drive_t *); |
| void (*resume)(ide_drive_t *); |
| void (*shutdown)(ide_drive_t *); |
| #ifdef CONFIG_IDE_PROC_FS |
| ide_proc_entry_t *proc; |
| const struct ide_devset **settings; |
| #endif |
| }; |
| |
| #define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver) |
| |
| int ide_device_get(ide_drive_t *); |
| void ide_device_put(ide_drive_t *); |
| |
| struct ide_ioctl_devset { |
| unsigned int get_ioctl; |
| unsigned int set_ioctl; |
| |
| int (*get)(ide_drive_t *); |
| int (*set)(ide_drive_t *, int); |
| }; |
| |
| int ide_setting_ioctl(ide_drive_t *, struct block_device *, unsigned int, |
| unsigned long, const struct ide_ioctl_devset *); |
| |
| int generic_ide_ioctl(ide_drive_t *, struct file *, struct block_device *, |
| unsigned, unsigned long); |
| |
| extern int ide_vlb_clk; |
| extern int ide_pci_clk; |
| |
| extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs); |
| int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq, |
| int uptodate, int nr_sectors); |
| |
| extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry); |
| |
| void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int, |
| ide_expiry_t *); |
| |
| void ide_execute_pkt_cmd(ide_drive_t *); |
| |
| void ide_pad_transfer(ide_drive_t *, int, int); |
| |
| ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8); |
| |
| ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat); |
| |
| void ide_fix_driveid(u16 *); |
| |
| extern void ide_fixstring(u8 *, const int, const int); |
| |
| int ide_busy_sleep(ide_hwif_t *, unsigned long, int); |
| |
| int ide_wait_stat(ide_startstop_t *, ide_drive_t *, u8, u8, unsigned long); |
| |
| extern ide_startstop_t ide_do_reset (ide_drive_t *); |
| |
| extern void ide_do_drive_cmd(ide_drive_t *, struct request *); |
| |
| extern void ide_end_drive_cmd(ide_drive_t *, u8, u8); |
| |
| 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; |
| |
| void ide_tf_dump(const char *, struct ide_taskfile *); |
| |
| void ide_exec_command(ide_hwif_t *, u8); |
| u8 ide_read_status(ide_hwif_t *); |
| u8 ide_read_altstatus(ide_hwif_t *); |
| u8 ide_read_sff_dma_status(ide_hwif_t *); |
| |
| void ide_set_irq(ide_hwif_t *, int); |
| |
| void ide_tf_load(ide_drive_t *, ide_task_t *); |
| void ide_tf_read(ide_drive_t *, ide_task_t *); |
| |
| void ide_input_data(ide_drive_t *, struct request *, void *, unsigned int); |
| void ide_output_data(ide_drive_t *, struct request *, void *, unsigned int); |
| |
| int ide_io_buffers(ide_drive_t *, struct ide_atapi_pc *, unsigned int, int); |
| |
| extern void SELECT_DRIVE(ide_drive_t *); |
| void SELECT_MASK(ide_drive_t *, int); |
| |
| u8 ide_read_error(ide_drive_t *); |
| void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *); |
| |
| extern int drive_is_ready(ide_drive_t *); |
| |
| void ide_pktcmd_tf_load(ide_drive_t *, u32, u16, u8); |
| |
| int ide_check_atapi_device(ide_drive_t *, const char *); |
| |
| void ide_init_pc(struct ide_atapi_pc *); |
| |
| /* |
| * 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), |
| }; |
| |
| void ide_queue_pc_head(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *, |
| struct request *); |
| 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); |
| |
| ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc, |
| ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry, |
| void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *), |
| void (*retry_pc)(ide_drive_t *), void (*dsc_handle)(ide_drive_t *), |
| int (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned int, |
| int)); |
| ide_startstop_t ide_transfer_pc(ide_drive_t *, struct ide_atapi_pc *, |
| ide_handler_t *, unsigned int, ide_expiry_t *); |
| ide_startstop_t ide_issue_pc(ide_drive_t *, struct ide_atapi_pc *, |
| ide_handler_t *, unsigned int, ide_expiry_t *); |
| |
| ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *); |
| |
| void task_end_request(ide_drive_t *, struct request *, u8); |
| |
| int ide_raw_taskfile(ide_drive_t *, ide_task_t *, u8 *, u16); |
| int ide_no_data_taskfile(ide_drive_t *, ide_task_t *); |
| |
| int ide_taskfile_ioctl(ide_drive_t *, unsigned int, unsigned long); |
| |
| extern int ide_driveid_update(ide_drive_t *); |
| extern int ide_config_drive_speed(ide_drive_t *, u8); |
| extern u8 eighty_ninty_three (ide_drive_t *); |
| extern int taskfile_lib_get_identify(ide_drive_t *drive, u8 *); |
| |
| extern int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout); |
| |
| extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout); |
| |
| extern 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); |
| extern void do_ide_request(struct request_queue *); |
| |
| void ide_init_disk(struct gendisk *, ide_drive_t *); |
| |
| #ifdef CONFIG_IDEPCI_PCIBUS_ORDER |
| extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *owner, const char *mod_name); |
| #define ide_pci_register_driver(d) __ide_pci_register_driver(d, THIS_MODULE, KBUILD_MODNAME) |
| #else |
| #define ide_pci_register_driver(d) pci_register_driver(d) |
| #endif |
| |
| void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, |
| hw_regs_t *, hw_regs_t **); |
| void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *); |
| |
| #ifdef CONFIG_BLK_DEV_IDEDMA_PCI |
| int ide_pci_set_master(struct pci_dev *, const char *); |
| unsigned long ide_pci_dma_base(ide_hwif_t *, const struct ide_port_info *); |
| int ide_pci_check_simplex(ide_hwif_t *, const struct ide_port_info *); |
| int ide_hwif_setup_dma(ide_hwif_t *, const struct ide_port_info *); |
| #else |
| static inline int ide_hwif_setup_dma(ide_hwif_t *hwif, |
| const struct ide_port_info *d) |
| { |
| return -EINVAL; |
| } |
| #endif |
| |
| typedef struct ide_pci_enablebit_s { |
| u8 reg; /* byte pci reg holding the enable-bit */ |
| u8 mask; /* mask to isolate the enable-bit */ |
| u8 val; /* value of masked reg when "enabled" */ |
| } ide_pci_enablebit_t; |
| |
| enum { |
| /* Uses ISA control ports not PCI ones. */ |
| IDE_HFLAG_ISA_PORTS = (1 << 0), |
| /* single port device */ |
| IDE_HFLAG_SINGLE = (1 << 1), |
| /* don't use legacy PIO blacklist */ |
| IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2), |
| /* set for the second port of QD65xx */ |
| IDE_HFLAG_QD_2ND_PORT = (1 << 3), |
| /* use PIO8/9 for prefetch off/on */ |
| IDE_HFLAG_ABUSE_PREFETCH = (1 << 4), |
| /* use PIO6/7 for fast-devsel off/on */ |
| IDE_HFLAG_ABUSE_FAST_DEVSEL = (1 << 5), |
| /* use 100-102 and 200-202 PIO values to set DMA modes */ |
| IDE_HFLAG_ABUSE_DMA_MODES = (1 << 6), |
| /* |
| * keep DMA setting when programming PIO mode, may be used only |
| * for hosts which have separate PIO and DMA timings (ie. PMAC) |
| */ |
| IDE_HFLAG_SET_PIO_MODE_KEEP_DMA = (1 << 7), |
| /* program host for the transfer mode after programming device */ |
| IDE_HFLAG_POST_SET_MODE = (1 << 8), |
| /* don't program host/device for the transfer mode ("smart" hosts) */ |
| IDE_HFLAG_NO_SET_MODE = (1 << 9), |
| /* trust BIOS for programming chipset/device for DMA */ |
| IDE_HFLAG_TRUST_BIOS_FOR_DMA = (1 << 10), |
| /* host is CS5510/CS5520 */ |
| IDE_HFLAG_CS5520 = (1 << 11), |
| /* ATAPI DMA is unsupported */ |
| IDE_HFLAG_NO_ATAPI_DMA = (1 << 12), |
| /* set if host is a "non-bootable" controller */ |
| IDE_HFLAG_NON_BOOTABLE = (1 << 13), |
| /* host doesn't support DMA */ |
| IDE_HFLAG_NO_DMA = (1 << 14), |
| /* check if host is PCI IDE device before allowing DMA */ |
| IDE_HFLAG_NO_AUTODMA = (1 << 15), |
| /* host uses MMIO */ |
| IDE_HFLAG_MMIO = (1 << 16), |
| /* no LBA48 */ |
| IDE_HFLAG_NO_LBA48 = (1 << 17), |
| /* no LBA48 DMA */ |
| IDE_HFLAG_NO_LBA48_DMA = (1 << 18), |
| /* data FIFO is cleared by an error */ |
| IDE_HFLAG_ERROR_STOPS_FIFO = (1 << 19), |
| /* serialize ports */ |
| IDE_HFLAG_SERIALIZE = (1 << 20), |
| /* use legacy IRQs */ |
| IDE_HFLAG_LEGACY_IRQS = (1 << 21), |
| /* force use of legacy IRQs */ |
| IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22), |
| /* limit LBA48 requests to 256 sectors */ |
| IDE_HFLAG_RQSIZE_256 = (1 << 23), |
| /* use 32-bit I/O ops */ |
| IDE_HFLAG_IO_32BIT = (1 << 24), |
| /* unmask IRQs */ |
| IDE_HFLAG_UNMASK_IRQS = (1 << 25), |
| /* serialize ports if DMA is possible (for sl82c105) */ |
| IDE_HFLAG_SERIALIZE_DMA = (1 << 27), |
| /* force host out of "simplex" mode */ |
| IDE_HFLAG_CLEAR_SIMPLEX = (1 << 28), |
| /* DSC overlap is unsupported */ |
| IDE_HFLAG_NO_DSC = (1 << 29), |
| /* never use 32-bit I/O ops */ |
| IDE_HFLAG_NO_IO_32BIT = (1 << 30), |
| /* never unmask IRQs */ |
| IDE_HFLAG_NO_UNMASK_IRQS = (1 << 31), |
| }; |
| |
| #ifdef CONFIG_BLK_DEV_OFFBOARD |
| # define IDE_HFLAG_OFF_BOARD 0 |
| #else |
| # define IDE_HFLAG_OFF_BOARD IDE_HFLAG_NON_BOOTABLE |
| #endif |
| |
| struct ide_port_info { |
| char *name; |
| unsigned int (*init_chipset)(struct pci_dev *); |
| void (*init_iops)(ide_hwif_t *); |
| void (*init_hwif)(ide_hwif_t *); |
| int (*init_dma)(ide_hwif_t *, |
| const struct ide_port_info *); |
| |
| const struct ide_tp_ops *tp_ops; |
| const struct ide_port_ops *port_ops; |
| const struct ide_dma_ops *dma_ops; |
| |
| ide_pci_enablebit_t enablebits[2]; |
| hwif_chipset_t chipset; |
| u32 host_flags; |
| u8 pio_mask; |
| u8 swdma_mask; |
| u8 mwdma_mask; |
| u8 udma_mask; |
| }; |
| |
| int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *); |
| int ide_pci_init_two(struct pci_dev *, struct pci_dev *, |
| const struct ide_port_info *, void *); |
| void ide_pci_remove(struct pci_dev *); |
| |
| #ifdef CONFIG_PM |
| int ide_pci_suspend(struct pci_dev *, pm_message_t); |
| int ide_pci_resume(struct pci_dev *); |
| #else |
| #define ide_pci_suspend NULL |
| #define ide_pci_resume NULL |
| #endif |
| |
| void ide_map_sg(ide_drive_t *, struct request *); |
| void ide_init_sg_cmd(ide_drive_t *, struct request *); |
| |
| #define BAD_DMA_DRIVE 0 |
| #define GOOD_DMA_DRIVE 1 |
| |
| struct drive_list_entry { |
| const char *id_model; |
| const char *id_firmware; |
| }; |
| |
| int ide_in_drive_list(u16 *, const struct drive_list_entry *); |
| |
| #ifdef CONFIG_BLK_DEV_IDEDMA |
| int __ide_dma_bad_drive(ide_drive_t *); |
| int ide_id_dma_bug(ide_drive_t *); |
| |
| u8 ide_find_dma_mode(ide_drive_t *, u8); |
| |
| static inline u8 ide_max_dma_mode(ide_drive_t *drive) |
| { |
| return ide_find_dma_mode(drive, XFER_UDMA_6); |
| } |
| |
| void ide_dma_off_quietly(ide_drive_t *); |
| void ide_dma_off(ide_drive_t *); |
| void ide_dma_on(ide_drive_t *); |
| int ide_set_dma(ide_drive_t *); |
| void ide_check_dma_crc(ide_drive_t *); |
| ide_startstop_t ide_dma_intr(ide_drive_t *); |
| |
| int ide_build_sglist(ide_drive_t *, struct request *); |
| void ide_destroy_dmatable(ide_drive_t *); |
| |
| #ifdef CONFIG_BLK_DEV_IDEDMA_SFF |
| extern int ide_build_dmatable(ide_drive_t *, struct request *); |
| int ide_allocate_dma_engine(ide_hwif_t *); |
| void ide_release_dma_engine(ide_hwif_t *); |
| |
| 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 *); |
| extern int __ide_dma_end(ide_drive_t *); |
| int ide_dma_test_irq(ide_drive_t *); |
| extern void ide_dma_lost_irq(ide_drive_t *); |
| extern void ide_dma_timeout(ide_drive_t *); |
| extern const struct ide_dma_ops sff_dma_ops; |
| #endif /* CONFIG_BLK_DEV_IDEDMA_SFF */ |
| |
| #else |
| static inline int ide_id_dma_bug(ide_drive_t *drive) { return 0; } |
| static inline u8 ide_find_dma_mode(ide_drive_t *drive, u8 speed) { return 0; } |
| static inline u8 ide_max_dma_mode(ide_drive_t *drive) { return 0; } |
| static inline void ide_dma_off_quietly(ide_drive_t *drive) { ; } |
| static inline void ide_dma_off(ide_drive_t *drive) { ; } |
| static inline void ide_dma_on(ide_drive_t *drive) { ; } |
| static inline void ide_dma_verbose(ide_drive_t *drive) { ; } |
| static inline int ide_set_dma(ide_drive_t *drive) { return 1; } |
| static inline void ide_check_dma_crc(ide_drive_t *drive) { ; } |
| #endif /* CONFIG_BLK_DEV_IDEDMA */ |
| |
| #ifndef CONFIG_BLK_DEV_IDEDMA_SFF |
| static inline void ide_release_dma_engine(ide_hwif_t *hwif) { ; } |
| #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); |
| void ide_acpi_port_init_devices(ide_hwif_t *); |
| extern void ide_acpi_set_state(ide_hwif_t *hwif, int on); |
| #else |
| static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; } |
| static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; } |
| static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; } |
| static inline void ide_acpi_init(ide_hwif_t *hwif) { ; } |
| static inline void ide_acpi_port_init_devices(ide_hwif_t *hwif) { ; } |
| static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {} |
| #endif |
| |
| void ide_remove_port_from_hwgroup(ide_hwif_t *); |
| void ide_unregister(ide_hwif_t *); |
| |
| void ide_register_region(struct gendisk *); |
| void ide_unregister_region(struct gendisk *); |
| |
| void ide_undecoded_slave(ide_drive_t *); |
| |
| void ide_port_apply_params(ide_hwif_t *); |
| |
| struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **); |
| struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **); |
| void ide_host_free(struct ide_host *); |
| int ide_host_register(struct ide_host *, const struct ide_port_info *, |
| hw_regs_t **); |
| int ide_host_add(const struct ide_port_info *, hw_regs_t **, |
| struct ide_host **); |
| void ide_host_remove(struct ide_host *); |
| int ide_legacy_device_add(const struct ide_port_info *, unsigned long); |
| void ide_port_unregister_devices(ide_hwif_t *); |
| void ide_port_scan(ide_hwif_t *); |
| |
| static inline void *ide_get_hwifdata (ide_hwif_t * hwif) |
| { |
| return hwif->hwif_data; |
| } |
| |
| static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data) |
| { |
| hwif->hwif_data = data; |
| } |
| |
| const char *ide_xfer_verbose(u8 mode); |
| extern void ide_toggle_bounce(ide_drive_t *drive, int on); |
| extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate); |
| |
| u64 ide_get_lba_addr(struct ide_taskfile *, int); |
| u8 ide_dump_status(ide_drive_t *, const char *, u8); |
| |
| struct ide_timing { |
| u8 mode; |
| u8 setup; /* t1 */ |
| u16 act8b; /* t2 for 8-bit io */ |
| u16 rec8b; /* t2i for 8-bit io */ |
| u16 cyc8b; /* t0 for 8-bit io */ |
| u16 active; /* t2 or tD */ |
| u16 recover; /* t2i or tK */ |
| u16 cycle; /* t0 */ |
| u16 udma; /* t2CYCTYP/2 */ |
| }; |
| |
| enum { |
| IDE_TIMING_SETUP = (1 << 0), |
| IDE_TIMING_ACT8B = (1 << 1), |
| IDE_TIMING_REC8B = (1 << 2), |
| IDE_TIMING_CYC8B = (1 << 3), |
| IDE_TIMING_8BIT = IDE_TIMING_ACT8B | IDE_TIMING_REC8B | |
| IDE_TIMING_CYC8B, |
| IDE_TIMING_ACTIVE = (1 << 4), |
| IDE_TIMING_RECOVER = (1 << 5), |
| IDE_TIMING_CYCLE = (1 << 6), |
| IDE_TIMING_UDMA = (1 << 7), |
| IDE_TIMING_ALL = IDE_TIMING_SETUP | IDE_TIMING_8BIT | |
| IDE_TIMING_ACTIVE | IDE_TIMING_RECOVER | |
| IDE_TIMING_CYCLE | IDE_TIMING_UDMA, |
| }; |
| |
| struct ide_timing *ide_timing_find_mode(u8); |
| u16 ide_pio_cycle_time(ide_drive_t *, u8); |
| void ide_timing_merge(struct ide_timing *, struct ide_timing *, |
| struct ide_timing *, unsigned int); |
| int ide_timing_compute(ide_drive_t *, u8, struct ide_timing *, int, int); |
| |
| int ide_scan_pio_blacklist(char *); |
| |
| u8 ide_get_best_pio_mode(ide_drive_t *, u8, u8); |
| |
| int ide_set_pio_mode(ide_drive_t *, u8); |
| int ide_set_dma_mode(ide_drive_t *, u8); |
| |
| void ide_set_pio(ide_drive_t *, u8); |
| |
| static inline void ide_set_max_pio(ide_drive_t *drive) |
| { |
| ide_set_pio(drive, 255); |
| } |
| |
| extern spinlock_t ide_lock; |
| extern struct mutex ide_cfg_mtx; |
| /* |
| * Structure locking: |
| * |
| * ide_cfg_mtx and ide_lock together protect changes to |
| * ide_hwif_t->{next,hwgroup} |
| * ide_drive_t->next |
| * |
| * ide_hwgroup_t->busy: ide_lock |
| * ide_hwgroup_t->hwif: ide_lock |
| * ide_hwif_t->mate: constant, no locking |
| * ide_drive_t->hwif: constant, no locking |
| */ |
| |
| #define local_irq_set(flags) do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0) |
| |
| extern struct bus_type ide_bus_type; |
| extern struct class *ide_port_class; |
| |
| static inline void ide_dump_identify(u8 *id) |
| { |
| print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 2, id, 512, 0); |
| } |
| |
| static inline int hwif_to_node(ide_hwif_t *hwif) |
| { |
| return hwif->dev ? dev_to_node(hwif->dev) : -1; |
| } |
| |
| static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive) |
| { |
| ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1]; |
| |
| return peer->present ? peer : NULL; |
| } |
| #endif /* _IDE_H */ |