| /* | |
| * 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: to be removed as soon as all the drivers are | |
| * converted to the new debugging mechanism | |
| */ | |
| #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) | |
| /* NEW: debug levels */ | |
| #define HAVE_LIBATA_MSG 1 | |
| enum { | |
| ATA_MSG_DRV = 0x0001, | |
| ATA_MSG_INFO = 0x0002, | |
| ATA_MSG_PROBE = 0x0004, | |
| ATA_MSG_WARN = 0x0008, | |
| ATA_MSG_MALLOC = 0x0010, | |
| ATA_MSG_CTL = 0x0020, | |
| ATA_MSG_INTR = 0x0040, | |
| ATA_MSG_ERR = 0x0080, | |
| }; | |
| #define ata_msg_drv(p) ((p)->msg_enable & ATA_MSG_DRV) | |
| #define ata_msg_info(p) ((p)->msg_enable & ATA_MSG_INFO) | |
| #define ata_msg_probe(p) ((p)->msg_enable & ATA_MSG_PROBE) | |
| #define ata_msg_warn(p) ((p)->msg_enable & ATA_MSG_WARN) | |
| #define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC) | |
| #define ata_msg_ctl(p) ((p)->msg_enable & ATA_MSG_CTL) | |
| #define ata_msg_intr(p) ((p)->msg_enable & ATA_MSG_INTR) | |
| #define ata_msg_err(p) ((p)->msg_enable & ATA_MSG_ERR) | |
| static inline u32 ata_msg_init(int dval, int default_msg_enable_bits) | |
| { | |
| if (dval < 0 || dval >= (sizeof(u32) * 8)) | |
| return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */ | |
| if (!dval) | |
| return 0; | |
| return (1 << dval) - 1; | |
| } | |
| /* 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_LBA = (1 << 2), /* 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), /* (obsolete) use ATA SRST, not E.D.D. */ | |
| ATA_FLAG_MMIO = (1 << 6), /* use MMIO, not PIO */ | |
| ATA_FLAG_SATA_RESET = (1 << 7), /* (obsolete) 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_FLAG_FLUSH_PORT_TASK = (1 << 15), /* Flush port task */ | |
| ATA_FLAG_IN_EH = (1 << 16), /* EH in progress */ | |
| 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, | |
| ATA_QCFLAG_EH_SCHEDULED = (1 << 5), /* EH scheduled */ | |
| /* host set flags */ | |
| ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host_set only */ | |
| /* various lengths of time */ | |
| 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 int bitmap | |
| */ | |
| ATA_BITS_PIO = 5, | |
| ATA_BITS_MWDMA = 3, | |
| ATA_BITS_UDMA = 8, | |
| ATA_SHIFT_PIO = 0, | |
| ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO, | |
| ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA, | |
| ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO, | |
| ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA, | |
| ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA, | |
| /* 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_DEV = (1 << 0), /* device reported error */ | |
| AC_ERR_HSM = (1 << 1), /* host state machine violation */ | |
| AC_ERR_TIMEOUT = (1 << 2), /* timeout */ | |
| AC_ERR_MEDIA = (1 << 3), /* media error */ | |
| AC_ERR_ATA_BUS = (1 << 4), /* ATA bus error */ | |
| AC_ERR_HOST_BUS = (1 << 5), /* host bus error */ | |
| AC_ERR_SYSTEM = (1 << 6), /* system error */ | |
| AC_ERR_INVALID = (1 << 7), /* invalid argument */ | |
| AC_ERR_OTHER = (1 << 8), /* unknown */ | |
| }; | |
| /* forward declarations */ | |
| struct scsi_device; | |
| struct ata_port_operations; | |
| struct ata_port; | |
| struct ata_queued_cmd; | |
| /* typedefs */ | |
| typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc); | |
| typedef void (*ata_probeinit_fn_t)(struct ata_port *); | |
| typedef int (*ata_reset_fn_t)(struct ata_port *, int, unsigned int *); | |
| typedef void (*ata_postreset_fn_t)(struct ata_port *ap, unsigned int *); | |
| 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; | |
| unsigned long host_set_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; | |
| unsigned long flags; | |
| int simplex_claimed; /* Keep seperate in case we | |
| ever need to do this locked */ | |
| 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; /* 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 */ | |
| unsigned int max_sectors; /* per-device max sectors */ | |
| unsigned int cdb_len; | |
| /* per-dev xfer mask */ | |
| unsigned int pio_mask; | |
| unsigned int mwdma_mask; | |
| unsigned int udma_mask; | |
| /* 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 */ | |
| 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 device *dev; | |
| struct work_struct port_task; | |
| unsigned int hsm_task_state; | |
| unsigned long pio_task_timeout; | |
| u32 msg_enable; | |
| struct list_head eh_done_q; | |
| 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 *); | |
| unsigned long (*mode_filter) (const struct ata_port *, struct ata_device *, unsigned long); | |
| 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); /* obsolete */ | |
| void (*set_mode) (struct ata_port *ap); | |
| int (*probe_reset) (struct ata_port *ap, unsigned int *classes); | |
| 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); | |
| unsigned 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 int ata_drive_probe_reset(struct ata_port *ap, | |
| ata_probeinit_fn_t probeinit, | |
| ata_reset_fn_t softreset, ata_reset_fn_t hardreset, | |
| ata_postreset_fn_t postreset, unsigned int *classes); | |
| extern void ata_std_probeinit(struct ata_port *ap); | |
| extern int ata_std_softreset(struct ata_port *ap, int verbose, | |
| unsigned int *classes); | |
| extern int sata_std_hardreset(struct ata_port *ap, int verbose, | |
| unsigned int *class); | |
| extern void ata_std_postreset(struct ata_port *ap, unsigned int *classes); | |
| extern int ata_dev_revalidate(struct ata_port *ap, struct ata_device *dev, | |
| int post_reset); | |
| 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); | |
| extern int ata_pci_clear_simplex(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 void ata_eh_qc_complete(struct ata_queued_cmd *qc); | |
| extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); | |
| 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 *, pm_message_t state); | |
| extern int ata_device_resume(struct ata_port *, struct ata_device *); | |
| extern int ata_device_suspend(struct ata_port *, struct ata_device *, pm_message_t state); | |
| extern int ata_ratelimit(void); | |
| extern unsigned int ata_busy_sleep(struct ata_port *ap, | |
| unsigned long timeout_pat, | |
| unsigned long timeout); | |
| extern void ata_port_queue_task(struct ata_port *ap, void (*fn)(void *), | |
| void *data, unsigned long delay); | |
| /* | |
| * 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_std_probe_reset(struct ata_port *ap, unsigned int *classes); | |
| 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 void ata_noop_qc_prep(struct ata_queued_cmd *qc); | |
| extern unsigned 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_id_string(const u16 *id, unsigned char *s, | |
| unsigned int ofs, unsigned int len); | |
| extern void ata_id_c_string(const u16 *id, unsigned char *s, | |
| unsigned int ofs, unsigned int len); | |
| 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); | |
| extern struct ata_device *ata_dev_pair(struct ata_port *ap, | |
| struct ata_device *adev); | |
| /* | |
| * 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); | |
| extern unsigned long ata_pci_default_filter(const struct ata_port *, struct ata_device *, unsigned long); | |
| #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_class_present(unsigned int class) | |
| { | |
| return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI; | |
| } | |
| static inline unsigned int ata_dev_present(const struct ata_device *dev) | |
| { | |
| return ata_class_present(dev->class); | |
| } | |
| 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; | |
| if (ata_msg_warn(ap)) | |
| 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_qc_complete - Complete an active ATA command | |
| * @qc: Command to complete | |
| * @err_mask: ATA Status register contents | |
| * | |
| * Indicate to the mid and upper layers that an ATA | |
| * command has completed, with either an ok or not-ok status. | |
| * | |
| * LOCKING: | |
| * spin_lock_irqsave(host_set lock) | |
| */ | |
| static inline void ata_qc_complete(struct ata_queued_cmd *qc) | |
| { | |
| if (unlikely(qc->flags & ATA_QCFLAG_EH_SCHEDULED)) | |
| return; | |
| __ata_qc_complete(qc); | |
| } | |
| /** | |
| * 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) | |
| if (ata_msg_err(ap)) | |
| printk(KERN_ERR "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); | |
| } | |
| if (ata_msg_intr(ap)) | |
| printk(KERN_INFO "%s: irq ack: host_stat 0x%X, new host_stat 0x%X, drv_stat 0x%X\n", | |
| __FUNCTION__, | |
| 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_HSM; | |
| 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__ */ |