http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/libata.h

/* * Copyright 2003-2005 Red Hat, Inc. All rights reserved. * Copyright 2003-2005 Jeff Garzik * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * * libata documentation is available via 'make {ps|pdf}docs', * as Documentation/DocBook/libata.* * */ #ifndef __LINUX_LIBATA_H__ #define __LINUX_LIBATA_H__ #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <asm/io.h> #include <linux/ata.h> #include <linux/workqueue.h> /* * compile-time options */ #undef ATA_DEBUG /* debugging output */ #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ #undef ATA_NDEBUG /* define to disable quick runtime checks */ #undef ATA_ENABLE_PATA /* define to enable PATA support in some * low-level drivers */ #undef ATAPI_ENABLE_DMADIR /* enables ATAPI DMADIR bridge support */ /* note: prints function name for you */ #ifdef ATA_DEBUG #define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) #ifdef ATA_VERBOSE_DEBUG #define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) #else #define VPRINTK(fmt, args...) #endif /* ATA_VERBOSE_DEBUG */ #else #define DPRINTK(fmt, args...) #define VPRINTK(fmt, args...) #endif /* ATA_DEBUG */ #define BPRINTK(fmt, args...) if (ap->flags & ATA_FLAG_DEBUGMSG) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args) #ifdef ATA_NDEBUG #define assert(expr) #else #define assert(expr) \ if(unlikely(!(expr))) { \ printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \ #expr,__FILE__,__FUNCTION__,__LINE__); \ } #endif /* defines only for the constants which don't work well as enums */ #define ATA_TAG_POISON 0xfafbfcfdU /* move to PCI layer? */ static inline struct device *pci_dev_to_dev(struct pci_dev *pdev) { return &pdev->dev; } enum { /* various global constants */ LIBATA_MAX_PRD = ATA_MAX_PRD / 2, ATA_MAX_PORTS = 8, ATA_DEF_QUEUE = 1, ATA_MAX_QUEUE = 1, ATA_MAX_SECTORS = 200, /* FIXME */ ATA_MAX_BUS = 2, ATA_DEF_BUSY_WAIT = 10000, ATA_SHORT_PAUSE = (HZ >> 6) + 1, ATA_SHT_EMULATED = 1, ATA_SHT_CMD_PER_LUN = 1, ATA_SHT_THIS_ID = -1, ATA_SHT_USE_CLUSTERING = 1, /* struct ata_device stuff */ ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */ ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */ ATA_DFLAG_LOCK_SECTORS = (1 << 2), /* don't adjust max_sectors */ ATA_DFLAG_LBA = (1 << 3), /* device supports LBA */ ATA_DEV_UNKNOWN = 0, /* unknown device */ ATA_DEV_ATA = 1, /* ATA device */ ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ ATA_DEV_ATAPI = 3, /* ATAPI device */ ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ ATA_DEV_NONE = 5, /* no device */ /* struct ata_port flags */ ATA_FLAG_SLAVE_POSS = (1 << 1), /* host supports slave dev */ /* (doesn't imply presence) */ ATA_FLAG_PORT_DISABLED = (1 << 2), /* port is disabled, ignore it */ ATA_FLAG_SATA = (1 << 3), ATA_FLAG_NO_LEGACY = (1 << 4), /* no legacy mode check */ ATA_FLAG_SRST = (1 << 5), /* use ATA SRST, not E.D.D. */ ATA_FLAG_MMIO = (1 << 6), /* use MMIO, not PIO */ ATA_FLAG_SATA_RESET = (1 << 7), /* use COMRESET */ ATA_FLAG_PIO_DMA = (1 << 8), /* PIO cmds via DMA */ ATA_FLAG_NOINTR = (1 << 9), /* FIXME: Remove this once * proper HSM is in place. */ ATA_FLAG_DEBUGMSG = (1 << 10), ATA_FLAG_NO_ATAPI = (1 << 11), /* No ATAPI support */ ATA_FLAG_SUSPENDED = (1 << 12), /* port is suspended */ ATA_FLAG_PIO_LBA48 = (1 << 13), /* Host DMA engine is LBA28 only */ ATA_FLAG_IRQ_MASK = (1 << 14), /* Mask IRQ in PIO xfers */ ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */ ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */ ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */ ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, /* various lengths of time */ ATA_TMOUT_EDD = 5 * HZ, /* heuristic */ ATA_TMOUT_PIO = 30 * HZ, ATA_TMOUT_BOOT = 30 * HZ, /* heuristic */ ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* heuristic */ ATA_TMOUT_CDB = 30 * HZ, ATA_TMOUT_CDB_QUICK = 5 * HZ, ATA_TMOUT_INTERNAL = 30 * HZ, ATA_TMOUT_INTERNAL_QUICK = 5 * HZ, /* ATA bus states */ BUS_UNKNOWN = 0, BUS_DMA = 1, BUS_IDLE = 2, BUS_NOINTR = 3, BUS_NODATA = 4, BUS_TIMER = 5, BUS_PIO = 6, BUS_EDD = 7, BUS_IDENTIFY = 8, BUS_PACKET = 9, /* SATA port states */ PORT_UNKNOWN = 0, PORT_ENABLED = 1, PORT_DISABLED = 2, /* encoding various smaller bitmaps into a single * unsigned long bitmap */ ATA_SHIFT_UDMA = 0, ATA_SHIFT_MWDMA = 8, ATA_SHIFT_PIO = 11, /* size of buffer to pad xfers ending on unaligned boundaries */ ATA_DMA_PAD_SZ = 4, ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, /* Masks for port functions */ ATA_PORT_PRIMARY = (1 << 0), ATA_PORT_SECONDARY = (1 << 1), }; enum hsm_task_states { HSM_ST_UNKNOWN, HSM_ST_IDLE, HSM_ST_POLL, HSM_ST_TMOUT, HSM_ST, HSM_ST_LAST, HSM_ST_LAST_POLL, HSM_ST_ERR, }; enum ata_completion_errors { AC_ERR_OTHER = (1 << 0), AC_ERR_DEV = (1 << 1), AC_ERR_ATA_BUS = (1 << 2), AC_ERR_HOST_BUS = (1 << 3), }; /* forward declarations */ struct scsi_device; struct ata_port_operations; struct ata_port; struct ata_queued_cmd; /* typedefs */ typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc); struct ata_ioports { unsigned long cmd_addr; unsigned long data_addr; unsigned long error_addr; unsigned long feature_addr; unsigned long nsect_addr; unsigned long lbal_addr; unsigned long lbam_addr; unsigned long lbah_addr; unsigned long device_addr; unsigned long status_addr; unsigned long command_addr; unsigned long altstatus_addr; unsigned long ctl_addr; unsigned long bmdma_addr; unsigned long scr_addr; }; struct ata_probe_ent { struct list_head node; struct device *dev; const struct ata_port_operations *port_ops; struct scsi_host_template *sht; struct ata_ioports port[ATA_MAX_PORTS]; unsigned int n_ports; unsigned int hard_port_no; unsigned int pio_mask; unsigned int mwdma_mask; unsigned int udma_mask; unsigned int legacy_mode; unsigned long irq; unsigned int irq_flags; unsigned long host_flags; void __iomem *mmio_base; void *private_data; }; struct ata_host_set { spinlock_t lock; struct device *dev; unsigned long irq; void __iomem *mmio_base; unsigned int n_ports; void *private_data; const struct ata_port_operations *ops; struct ata_port * ports[0]; }; struct ata_queued_cmd { struct ata_port *ap; struct ata_device *dev; struct scsi_cmnd *scsicmd; void (*scsidone)(struct scsi_cmnd *); struct ata_taskfile tf; u8 cdb[ATAPI_CDB_LEN]; unsigned long flags; /* ATA_QCFLAG_xxx */ unsigned int tag; unsigned int n_elem; unsigned int orig_n_elem; int dma_dir; unsigned int pad_len; unsigned int nsect; unsigned int cursect; unsigned int nbytes; unsigned int curbytes; unsigned int cursg; unsigned int cursg_ofs; struct scatterlist sgent; struct scatterlist pad_sgent; void *buf_virt; /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ struct scatterlist *__sg; unsigned int err_mask; ata_qc_cb_t complete_fn; void *private_data; }; struct ata_host_stats { unsigned long unhandled_irq; unsigned long idle_irq; unsigned long rw_reqbuf; }; struct ata_device { u64 n_sectors; /* size of device, if ATA */ unsigned long flags; /* ATA_DFLAG_xxx */ unsigned int class; /* ATA_DEV_xxx */ unsigned int devno; /* 0 or 1 */ u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ u8 pio_mode; u8 dma_mode; u8 xfer_mode; unsigned int xfer_shift; /* ATA_SHIFT_xxx */ unsigned int multi_count; /* sectors count for READ/WRITE MULTIPLE */ /* for CHS addressing */ u16 cylinders; /* Number of cylinders */ u16 heads; /* Number of heads */ u16 sectors; /* Number of sectors per track */ }; struct ata_port { struct Scsi_Host *host; /* our co-allocated scsi host */ const struct ata_port_operations *ops; unsigned long flags; /* ATA_FLAG_xxx */ unsigned int id; /* unique id req'd by scsi midlyr */ unsigned int port_no; /* unique port #; from zero */ unsigned int hard_port_no; /* hardware port #; from zero */ struct ata_prd *prd; /* our SG list */ dma_addr_t prd_dma; /* and its DMA mapping */ void *pad; /* array of DMA pad buffers */ dma_addr_t pad_dma; struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */ u8 ctl; /* cache of ATA control register */ u8 last_ctl; /* Cache last written value */ unsigned int pio_mask; unsigned int mwdma_mask; unsigned int udma_mask; unsigned int cbl; /* cable type; ATA_CBL_xxx */ unsigned int cdb_len; struct ata_device device[ATA_MAX_DEVICES]; struct ata_queued_cmd qcmd[ATA_MAX_QUEUE]; unsigned long qactive; unsigned int active_tag; struct ata_host_stats stats; struct ata_host_set *host_set; struct work_struct packet_task; struct work_struct pio_task; unsigned int hsm_task_state; unsigned long pio_task_timeout; void *private_data; }; struct ata_port_operations { void (*port_disable) (struct ata_port *); void (*dev_config) (struct ata_port *, struct ata_device *); void (*set_piomode) (struct ata_port *, struct ata_device *); void (*set_dmamode) (struct ata_port *, struct ata_device *); void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); u8 (*check_status)(struct ata_port *ap); u8 (*check_altstatus)(struct ata_port *ap); void (*dev_select)(struct ata_port *ap, unsigned int device); void (*phy_reset) (struct ata_port *ap); void (*post_set_mode) (struct ata_port *ap); int (*check_atapi_dma) (struct ata_queued_cmd *qc); void (*bmdma_setup) (struct ata_queued_cmd *qc); void (*bmdma_start) (struct ata_queued_cmd *qc); void (*qc_prep) (struct ata_queued_cmd *qc); int (*qc_issue) (struct ata_queued_cmd *qc); void (*eng_timeout) (struct ata_port *ap); irqreturn_t (*irq_handler)(int, void *, struct pt_regs *); void (*irq_clear) (struct ata_port *); u32 (*scr_read) (struct ata_port *ap, unsigned int sc_reg); void (*scr_write) (struct ata_port *ap, unsigned int sc_reg, u32 val); int (*port_start) (struct ata_port *ap); void (*port_stop) (struct ata_port *ap); void (*host_stop) (struct ata_host_set *host_set); void (*bmdma_stop) (struct ata_queued_cmd *qc); u8 (*bmdma_status) (struct ata_port *ap); }; struct ata_port_info { struct scsi_host_template *sht; unsigned long host_flags; unsigned long pio_mask; unsigned long mwdma_mask; unsigned long udma_mask; const struct ata_port_operations *port_ops; void *private_data; }; struct ata_timing { unsigned short mode; /* ATA mode */ unsigned short setup; /* t1 */ unsigned short act8b; /* t2 for 8-bit I/O */ unsigned short rec8b; /* t2i for 8-bit I/O */ unsigned short cyc8b; /* t0 for 8-bit I/O */ unsigned short active; /* t2 or tD */ unsigned short recover; /* t2i or tK */ unsigned short cycle; /* t0 */ unsigned short udma; /* t2CYCTYP/2 */ }; #define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin) extern void ata_port_probe(struct ata_port *); extern void __sata_phy_reset(struct ata_port *ap); extern void sata_phy_reset(struct ata_port *ap); extern void ata_bus_reset(struct ata_port *ap); extern void ata_port_disable(struct ata_port *); extern void ata_std_ports(struct ata_ioports *ioaddr); #ifdef CONFIG_PCI extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info, unsigned int n_ports); extern void ata_pci_remove_one (struct pci_dev *pdev); extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state); extern int ata_pci_device_resume(struct pci_dev *pdev); #endif /* CONFIG_PCI */ extern int ata_device_add(const struct ata_probe_ent *ent); extern void ata_host_set_remove(struct ata_host_set *host_set); extern int ata_scsi_detect(struct scsi_host_template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); extern int ata_scsi_error(struct Scsi_Host *host); extern int ata_scsi_release(struct Scsi_Host *host); extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); extern int ata_scsi_device_resume(struct scsi_device *); extern int ata_scsi_device_suspend(struct scsi_device *); extern int ata_device_resume(struct ata_port *, struct ata_device *); extern int ata_device_suspend(struct ata_port *, struct ata_device *); extern int ata_ratelimit(void); /* * Default driver ops implementations */ extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp); extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device); extern void ata_std_dev_select (struct ata_port *ap, unsigned int device); extern u8 ata_check_status(struct ata_port *ap); extern u8 ata_altstatus(struct ata_port *ap); extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); extern int ata_port_start (struct ata_port *ap); extern void ata_port_stop (struct ata_port *ap); extern void ata_host_stop (struct ata_host_set *host_set); extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs); extern void ata_qc_prep(struct ata_queued_cmd *qc); extern int ata_qc_issue_prot(struct ata_queued_cmd *qc); extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen); extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, unsigned int n_elem); extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); extern void ata_dev_id_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); extern void ata_dev_config(struct ata_port *ap, unsigned int i); extern void ata_bmdma_setup (struct ata_queued_cmd *qc); extern void ata_bmdma_start (struct ata_queued_cmd *qc); extern void ata_bmdma_stop(struct ata_queued_cmd *qc); extern u8 ata_bmdma_status(struct ata_port *ap); extern void ata_bmdma_irq_clear(struct ata_port *ap); extern void ata_qc_complete(struct ata_queued_cmd *qc); extern void ata_eng_timeout(struct ata_port *ap); extern void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev, struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); extern int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]); extern int ata_scsi_slave_config(struct scsi_device *sdev); /* * Timing helpers */ extern unsigned int ata_pio_need_iordy(const struct ata_device *); extern int ata_timing_compute(struct ata_device *, unsigned short, struct ata_timing *, int, int); extern void ata_timing_merge(const struct ata_timing *, const struct ata_timing *, struct ata_timing *, unsigned int); enum { ATA_TIMING_SETUP = (1 << 0), ATA_TIMING_ACT8B = (1 << 1), ATA_TIMING_REC8B = (1 << 2), ATA_TIMING_CYC8B = (1 << 3), ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | ATA_TIMING_CYC8B, ATA_TIMING_ACTIVE = (1 << 4), ATA_TIMING_RECOVER = (1 << 5), ATA_TIMING_CYCLE = (1 << 6), ATA_TIMING_UDMA = (1 << 7), ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | ATA_TIMING_REC8B | ATA_TIMING_CYC8B | ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | ATA_TIMING_CYCLE | ATA_TIMING_UDMA, }; #ifdef CONFIG_PCI struct pci_bits { unsigned int reg; /* PCI config register to read */ unsigned int width; /* 1 (8 bit), 2 (16 bit), 4 (32 bit) */ unsigned long mask; unsigned long val; }; extern void ata_pci_host_stop (struct ata_host_set *host_set); extern struct ata_probe_ent * ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask); extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); #endif /* CONFIG_PCI */ static inline int ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) { if (sg == &qc->pad_sgent) return 1; if (qc->pad_len) return 0; if (((sg - qc->__sg) + 1) == qc->n_elem) return 1; return 0; } static inline struct scatterlist * ata_qc_first_sg(struct ata_queued_cmd *qc) { if (qc->n_elem) return qc->__sg; if (qc->pad_len) return &qc->pad_sgent; return NULL; } static inline struct scatterlist * ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) { if (sg == &qc->pad_sgent) return NULL; if (++sg - qc->__sg < qc->n_elem) return sg; if (qc->pad_len) return &qc->pad_sgent; return NULL; } #define ata_for_each_sg(sg, qc) \ for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc)) static inline unsigned int ata_tag_valid(unsigned int tag) { return (tag < ATA_MAX_QUEUE) ? 1 : 0; } static inline unsigned int ata_dev_present(const struct ata_device *dev) { return ((dev->class == ATA_DEV_ATA) || (dev->class == ATA_DEV_ATAPI)); } static inline u8 ata_chk_status(struct ata_port *ap) { return ap->ops->check_status(ap); } /** * ata_pause - Flush writes and pause 400 nanoseconds. * @ap: Port to wait for. * * LOCKING: * Inherited from caller. */ static inline void ata_pause(struct ata_port *ap) { ata_altstatus(ap); ndelay(400); } /** * ata_busy_wait - Wait for a port status register * @ap: Port to wait for. * * Waits up to max*10 microseconds for the selected bits in the port's * status register to be cleared. * Returns final value of status register. * * LOCKING: * Inherited from caller. */ static inline u8 ata_busy_wait(struct ata_port *ap, unsigned int bits, unsigned int max) { u8 status; do { udelay(10); status = ata_chk_status(ap); max--; } while ((status & bits) && (max > 0)); return status; } /** * ata_wait_idle - Wait for a port to be idle. * @ap: Port to wait for. * * Waits up to 10ms for port's BUSY and DRQ signals to clear. * Returns final value of status register. * * LOCKING: * Inherited from caller. */ static inline u8 ata_wait_idle(struct ata_port *ap) { u8 status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000); if (status & (ATA_BUSY | ATA_DRQ)) { unsigned long l = ap->ioaddr.status_addr; printk(KERN_WARNING "ATA: abnormal status 0x%X on port 0x%lX\n", status, l); } return status; } static inline void ata_qc_set_polling(struct ata_queued_cmd *qc) { qc->tf.ctl |= ATA_NIEN; } static inline struct ata_queued_cmd *ata_qc_from_tag (struct ata_port *ap, unsigned int tag) { if (likely(ata_tag_valid(tag))) return &ap->qcmd[tag]; return NULL; } static inline void ata_tf_init(struct ata_port *ap, struct ata_taskfile *tf, unsigned int device) { memset(tf, 0, sizeof(*tf)); tf->ctl = ap->ctl; if (device == 0) tf->device = ATA_DEVICE_OBS; else tf->device = ATA_DEVICE_OBS | ATA_DEV1; } static inline void ata_qc_reinit(struct ata_queued_cmd *qc) { qc->__sg = NULL; qc->flags = 0; qc->cursect = qc->cursg = qc->cursg_ofs = 0; qc->nsect = 0; qc->nbytes = qc->curbytes = 0; qc->err_mask = 0; ata_tf_init(qc->ap, &qc->tf, qc->dev->devno); } /** * ata_irq_on - Enable interrupts on a port. * @ap: Port on which interrupts are enabled. * * Enable interrupts on a legacy IDE device using MMIO or PIO, * wait for idle, clear any pending interrupts. * * LOCKING: * Inherited from caller. */ static inline u8 ata_irq_on(struct ata_port *ap) { struct ata_ioports *ioaddr = &ap->ioaddr; u8 tmp; ap->ctl &= ~ATA_NIEN; ap->last_ctl = ap->ctl; if (ap->flags & ATA_FLAG_MMIO) writeb(ap->ctl, (void __iomem *) ioaddr->ctl_addr); else outb(ap->ctl, ioaddr->ctl_addr); tmp = ata_wait_idle(ap); ap->ops->irq_clear(ap); return tmp; } /** * ata_irq_ack - Acknowledge a device interrupt. * @ap: Port on which interrupts are enabled. * * Wait up to 10 ms for legacy IDE device to become idle (BUSY * or BUSY+DRQ clear). Obtain dma status and port status from * device. Clear the interrupt. Return port status. * * LOCKING: */ static inline u8 ata_irq_ack(struct ata_port *ap, unsigned int chk_drq) { unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY; u8 host_stat, post_stat, status; status = ata_busy_wait(ap, bits, 1000); if (status & bits) DPRINTK("abnormal status 0x%X\n", status); /* get controller status; clear intr, err bits */ if (ap->flags & ATA_FLAG_MMIO) { void __iomem *mmio = (void __iomem *) ap->ioaddr.bmdma_addr; host_stat = readb(mmio + ATA_DMA_STATUS); writeb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, mmio + ATA_DMA_STATUS); post_stat = readb(mmio + ATA_DMA_STATUS); } else { host_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); outb(host_stat | ATA_DMA_INTR | ATA_DMA_ERR, ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); post_stat = inb(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); } VPRINTK("irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n", host_stat, post_stat, status); return status; } static inline u32 scr_read(struct ata_port *ap, unsigned int reg) { return ap->ops->scr_read(ap, reg); } static inline void scr_write(struct ata_port *ap, unsigned int reg, u32 val) { ap->ops->scr_write(ap, reg, val); } static inline void scr_write_flush(struct ata_port *ap, unsigned int reg, u32 val) { ap->ops->scr_write(ap, reg, val); (void) ap->ops->scr_read(ap, reg); } static inline unsigned int sata_dev_present(struct ata_port *ap) { return ((scr_read(ap, SCR_STATUS) & 0xf) == 0x3) ? 1 : 0; } static inline int ata_try_flush_cache(const struct ata_device *dev) { return ata_id_wcache_enabled(dev->id) || ata_id_has_flush(dev->id) || ata_id_has_flush_ext(dev->id); } static inline unsigned int ac_err_mask(u8 status) { if (status & ATA_BUSY) return AC_ERR_ATA_BUS; if (status & (ATA_ERR | ATA_DF)) return AC_ERR_DEV; return 0; } static inline unsigned int __ac_err_mask(u8 status) { unsigned int mask = ac_err_mask(status); if (mask == 0) return AC_ERR_OTHER; return mask; } static inline int ata_pad_alloc(struct ata_port *ap, struct device *dev) { ap->pad_dma = 0; ap->pad = dma_alloc_coherent(dev, ATA_DMA_PAD_BUF_SZ, &ap->pad_dma, GFP_KERNEL); return (ap->pad == NULL) ? -ENOMEM : 0; } static inline void ata_pad_free(struct ata_port *ap, struct device *dev) { dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma); } #endif /* __LINUX_LIBATA_H__ */