ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
ATA_QCFLAG_QUIET = (1 << 6), /* don't report device error */
+ ATA_QCFLAG_RETRY = (1 << 7), /* retry after failure */
ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
*/
ATA_TMOUT_FF_WAIT = 4 * HZ / 5,
+ /* Spec mandates to wait for ">= 2ms" before checking status
+ * after reset. We wait 150ms, because that was the magic
+ * delay used for ATAPI devices in Hale Landis's ATADRVR, for
+ * the period of time between when the ATA command register is
+ * written, and then status is checked. Because waiting for
+ * "a while" before checking status is fine, post SRST, we
+ * perform this magic delay here as well.
+ *
+ * Old drivers/ide uses the 2mS rule and then waits for ready.
+ */
+ ATA_WAIT_AFTER_RESET_MSECS = 150,
+
+ /* If PMP is supported, we have to do follow-up SRST. As some
+ * PMPs don't send D2H Reg FIS after hardreset, LLDs are
+ * advised to wait only for the following duration before
+ * doing SRST.
+ */
+ ATA_TMOUT_PMP_SRST_WAIT = 1 * HZ,
+
/* ATA bus states */
BUS_UNKNOWN = 0,
BUS_DMA = 1,
ATAPI_READ_CD = 2, /* READ CD [MSF] */
ATAPI_PASS_THRU = 3, /* SAT pass-thru */
ATAPI_MISC = 4, /* the rest */
+
+ /* Timing constants */
+ 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,
};
enum ata_xfer_mask {
};
extern struct class_device_attribute class_device_attr_link_power_management_policy;
+#ifdef CONFIG_ATA_SFF
struct ata_ioports {
void __iomem *cmd_addr;
void __iomem *data_addr;
void __iomem *bmdma_addr;
void __iomem *scr_addr;
};
+#endif /* CONFIG_ATA_SFF */
struct ata_host {
spinlock_t lock;
void __iomem * const *iomap;
unsigned int n_ports;
void *private_data;
- const struct ata_port_operations *ops;
+ struct ata_port_operations *ops;
unsigned long flags;
#ifdef CONFIG_ATA_ACPI
acpi_handle acpi_handle;
struct ata_port {
struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
- const struct ata_port_operations *ops;
+ struct ata_port_operations *ops;
spinlock_t *lock;
unsigned long flags; /* ATA_FLAG_xxx */
unsigned int pflags; /* ATA_PFLAG_xxx */
struct ata_prd *prd; /* our SG list */
dma_addr_t prd_dma; /* and its DMA mapping */
+#ifdef CONFIG_ATA_SFF
struct ata_ioports ioaddr; /* ATA cmd/ctl/dma register blocks */
+#endif /* CONFIG_ATA_SFF */
u8 ctl; /* cache of ATA control register */
u8 last_ctl; /* Cache last written value */
u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */
};
+/* The following initializer overrides a method to NULL whether one of
+ * its parent has the method defined or not. This is equivalent to
+ * ERR_PTR(-ENOENT). Unfortunately, ERR_PTR doesn't render a constant
+ * expression and thus can't be used as an initializer.
+ */
+#define ATA_OP_NULL (void *)(unsigned long)(-ENOENT)
+
struct ata_port_operations {
/*
* Command execution
int (*check_atapi_dma)(struct ata_queued_cmd *qc);
void (*qc_prep)(struct ata_queued_cmd *qc);
unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
+ bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
/*
* Configuration and exception handling
void (*freeze)(struct ata_port *ap);
void (*thaw)(struct ata_port *ap);
+ ata_prereset_fn_t prereset;
+ ata_reset_fn_t softreset;
+ ata_reset_fn_t hardreset;
+ ata_postreset_fn_t postreset;
+ ata_prereset_fn_t pmp_prereset;
+ ata_reset_fn_t pmp_softreset;
+ ata_reset_fn_t pmp_hardreset;
+ ata_postreset_fn_t pmp_postreset;
void (*error_handler)(struct ata_port *ap);
void (*post_internal_cmd)(struct ata_queued_cmd *qc);
void (*port_stop)(struct ata_port *ap);
void (*host_stop)(struct ata_host *host);
+#ifdef CONFIG_ATA_SFF
/*
* SFF / taskfile oriented ops
*/
- void (*dev_select)(struct ata_port *ap, unsigned int device);
- u8 (*check_status)(struct ata_port *ap);
- u8 (*check_altstatus)(struct ata_port *ap);
- 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);
- unsigned int (*data_xfer)(struct ata_device *dev, unsigned char *buf,
- unsigned int buflen, int rw);
- u8 (*irq_on)(struct ata_port *);
-
- void (*irq_clear)(struct ata_port *);
+ void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
+ u8 (*sff_check_status)(struct ata_port *ap);
+ u8 (*sff_check_altstatus)(struct ata_port *ap);
+ void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
+ void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
+ void (*sff_exec_command)(struct ata_port *ap,
+ const struct ata_taskfile *tf);
+ unsigned int (*sff_data_xfer)(struct ata_device *dev,
+ unsigned char *buf, unsigned int buflen, int rw);
+ u8 (*sff_irq_on)(struct ata_port *);
+ void (*sff_irq_clear)(struct ata_port *);
+
void (*bmdma_setup)(struct ata_queued_cmd *qc);
void (*bmdma_start)(struct ata_queued_cmd *qc);
void (*bmdma_stop)(struct ata_queued_cmd *qc);
u8 (*bmdma_status)(struct ata_port *ap);
+#endif /* CONFIG_ATA_SFF */
/*
* Obsolete
*/
void (*phy_reset)(struct ata_port *ap);
void (*eng_timeout)(struct ata_port *ap);
- irq_handler_t irq_handler;
+
+ /*
+ * ->inherits must be the last field and all the preceding
+ * fields must be pointers.
+ */
+ const struct ata_port_operations *inherits;
};
struct ata_port_info {
- struct scsi_host_template *sht;
unsigned long flags;
unsigned long link_flags;
unsigned long pio_mask;
unsigned long mwdma_mask;
unsigned long udma_mask;
- const struct ata_port_operations *port_ops;
- irq_handler_t irq_handler;
+ struct ata_port_operations *port_ops;
void *private_data;
};
#define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin)
+/*
+ * Core layer - drivers/ata/libata-core.c
+ */
extern const unsigned long sata_deb_timing_normal[];
extern const unsigned long sata_deb_timing_hotplug[];
extern const unsigned long sata_deb_timing_long[];
-extern const struct ata_port_operations ata_dummy_port_ops;
+extern struct ata_port_operations ata_dummy_port_ops;
extern const struct ata_port_info ata_dummy_port_info;
static inline const unsigned long *
extern void sata_print_link_status(struct ata_link *link);
extern void ata_port_probe(struct ata_port *);
-extern void ata_bus_reset(struct ata_port *ap);
extern int sata_set_spd(struct ata_link *link);
+extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
+extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
+ int (*check_ready)(struct ata_link *link));
extern int sata_link_debounce(struct ata_link *link,
const unsigned long *params, unsigned long deadline);
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline);
-extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
-extern int ata_std_softreset(struct ata_link *link, unsigned int *classes,
- unsigned long deadline);
extern int sata_link_hardreset(struct ata_link *link,
- const unsigned long *timing, unsigned long deadline);
+ const unsigned long *timing, unsigned long deadline,
+ bool *online, int (*check_ready)(struct ata_link *));
extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
unsigned long deadline);
extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);
extern void ata_port_disable(struct ata_port *);
-extern void ata_std_ports(struct ata_ioports *ioaddr);
extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
struct scsi_host_template *sht);
extern void ata_host_detach(struct ata_host *host);
extern void ata_host_init(struct ata_host *, struct device *,
- unsigned long, const struct ata_port_operations *);
+ unsigned long, struct ata_port_operations *);
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_sas_slave_configure(struct scsi_device *, struct ata_port *);
extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *),
struct ata_port *ap);
-extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
extern int sata_scr_valid(struct ata_link *link);
extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
extern void ata_host_resume(struct ata_host *host);
#endif
extern int ata_ratelimit(void);
-extern int ata_busy_sleep(struct ata_port *ap,
- unsigned long timeout_pat, unsigned long timeout);
-extern void ata_wait_after_reset(struct ata_port *ap, unsigned long deadline);
-extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline);
extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
unsigned long interval_msec,
unsigned long timeout_msec);
-extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present,
- u8 *r_err);
-
-/*
- * 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 int atapi_cmd_type(u8 opcode);
extern void ata_tf_to_fis(const struct ata_taskfile *tf,
u8 pmp, int is_cmd, u8 *fis);
extern int ata_xfer_mode2shift(unsigned long xfer_mode);
extern const char *ata_mode_string(unsigned long xfer_mask);
extern unsigned long ata_id_xfermask(const u16 *id);
-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 int ata_sff_port_start(struct ata_port *ap);
-extern irqreturn_t ata_interrupt(int irq, void *dev_instance);
-extern unsigned int ata_data_xfer(struct ata_device *dev,
- unsigned char *buf, unsigned int buflen, int rw);
-extern unsigned int ata_data_xfer_noirq(struct ata_device *dev,
- unsigned char *buf, unsigned int buflen, int rw);
extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
-extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc);
-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(struct ata_queued_cmd *qc, struct scatterlist *sg,
unsigned int n_elem);
extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
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_bmdma_freeze(struct ata_port *ap);
-extern void ata_bmdma_thaw(struct ata_port *ap);
-extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
- ata_reset_fn_t softreset,
- ata_reset_fn_t hardreset,
- ata_postreset_fn_t postreset);
-extern void ata_bmdma_error_handler(struct ata_port *ap);
-extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
-extern int ata_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
- u8 status, int in_wq);
extern void ata_qc_complete(struct ata_queued_cmd *qc);
-extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
- void (*finish_qc)(struct ata_queued_cmd *));
+extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *));
extern int ata_std_bios_param(struct scsi_device *sdev,
int queue_depth);
extern struct ata_device *ata_dev_pair(struct ata_device *adev);
extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
-extern u8 ata_irq_on(struct ata_port *ap);
extern int ata_cable_40wire(struct ata_port *ap);
extern int ata_cable_80wire(struct ata_port *ap);
extern int ata_cable_ignore(struct ata_port *ap);
extern int ata_cable_unknown(struct ata_port *ap);
-/*
- * Timing helpers
- */
-
+/* Timing helpers */
extern unsigned int ata_pio_need_iordy(const struct ata_device *);
extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
extern int ata_timing_compute(struct ata_device *, unsigned short,
unsigned int);
extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);
-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,
+/* PCI */
+#ifdef CONFIG_PCI
+struct pci_dev;
+
+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;
};
-/* libata-acpi.c */
+extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
+extern void ata_pci_remove_one(struct pci_dev *pdev);
+
+#ifdef CONFIG_PM
+extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
+extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
+extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
+extern int ata_pci_device_resume(struct pci_dev *pdev);
+#endif /* CONFIG_PM */
+#endif /* CONFIG_PCI */
+
+/*
+ * ACPI - drivers/ata/libata-acpi.c
+ */
#ifdef CONFIG_ATA_ACPI
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
{
}
#endif
-#ifdef CONFIG_PCI
-struct pci_dev;
-
-extern int ata_pci_init_one(struct pci_dev *pdev,
- const struct ata_port_info * const * ppi);
-extern void ata_pci_remove_one(struct pci_dev *pdev);
-#ifdef CONFIG_PM
-extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
-extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
-extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
-extern int ata_pci_device_resume(struct pci_dev *pdev);
-#endif
-extern int ata_pci_clear_simplex(struct pci_dev *pdev);
-
-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 int ata_pci_init_sff_host(struct ata_host *host);
-extern int ata_pci_init_bmdma(struct ata_host *host);
-extern int ata_pci_prepare_sff_host(struct pci_dev *pdev,
- const struct ata_port_info * const * ppi,
- struct ata_host **r_host);
-extern int ata_pci_activate_sff_host(struct ata_host *host,
- irq_handler_t irq_handler,
- struct scsi_host_template *sht);
-extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
-extern unsigned long ata_pci_default_filter(struct ata_device *dev,
- unsigned long xfer_mask);
-#endif /* CONFIG_PCI */
-
/*
- * PMP
- */
-extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
-extern int sata_pmp_std_prereset(struct ata_link *link, unsigned long deadline);
-extern int sata_pmp_std_hardreset(struct ata_link *link, unsigned int *class,
- unsigned long deadline);
-extern void sata_pmp_std_postreset(struct ata_link *link, unsigned int *class);
-extern void sata_pmp_do_eh(struct ata_port *ap,
- ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
- ata_reset_fn_t hardreset, ata_postreset_fn_t postreset,
- ata_prereset_fn_t pmp_prereset, ata_reset_fn_t pmp_softreset,
- ata_reset_fn_t pmp_hardreset, ata_postreset_fn_t pmp_postreset);
-
-/*
- * EH
+ * EH - drivers/ata/libata-eh.c
*/
extern void ata_port_schedule_eh(struct ata_port *ap);
extern int ata_link_abort(struct ata_link *link);
extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
ata_postreset_fn_t postreset);
+extern void ata_std_error_handler(struct ata_port *ap);
+
+/*
+ * Base operations to inherit from and initializers for sht
+ *
+ * Operations
+ *
+ * base : Common to all libata drivers.
+ * sata : SATA controllers w/ native interface.
+ * pmp : SATA controllers w/ PMP support.
+ * sff : SFF ATA controllers w/o BMDMA support.
+ * bmdma : SFF ATA controllers w/ BMDMA support.
+ *
+ * sht initializers
+ *
+ * BASE : Common to all libata drivers. The user must set
+ * sg_tablesize and dma_boundary.
+ * PIO : SFF ATA controllers w/ only PIO support.
+ * BMDMA : SFF ATA controllers w/ BMDMA support. sg_tablesize and
+ * dma_boundary are set to BMDMA limits.
+ * NCQ : SATA controllers supporting NCQ. The user must set
+ * sg_tablesize, dma_boundary and can_queue.
+ */
+extern const struct ata_port_operations ata_base_port_ops;
+extern const struct ata_port_operations sata_port_ops;
+
+#define ATA_BASE_SHT(drv_name) \
+ .module = THIS_MODULE, \
+ .name = drv_name, \
+ .ioctl = ata_scsi_ioctl, \
+ .queuecommand = ata_scsi_queuecmd, \
+ .can_queue = ATA_DEF_QUEUE, \
+ .this_id = ATA_SHT_THIS_ID, \
+ .cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
+ .emulated = ATA_SHT_EMULATED, \
+ .use_clustering = ATA_SHT_USE_CLUSTERING, \
+ .proc_name = drv_name, \
+ .slave_configure = ata_scsi_slave_config, \
+ .slave_destroy = ata_scsi_slave_destroy, \
+ .bios_param = ata_std_bios_param
+
+#define ATA_NCQ_SHT(drv_name) \
+ ATA_BASE_SHT(drv_name), \
+ .change_queue_depth = ata_scsi_change_queue_depth
/*
* printk helpers
static inline unsigned int ata_tag_internal(unsigned int tag)
{
- return tag == ATA_MAX_QUEUE - 1;
+ return tag == ATA_TAG_INTERNAL;
}
/*
for ((dev) = (link)->device + ata_link_max_devices(link) - 1; \
(dev) >= (link)->device || ((dev) = NULL); (dev)--)
-static inline u8 ata_chk_status(struct ata_port *ap)
-{
- return ap->ops->check_status(ap);
-}
-
/**
* ata_ncq_enabled - Test whether NCQ is enabled
* @dev: ATA device to test for
ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
}
-/**
- * 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.
- * @bits: bits that must be clear
- * @max: number of 10uS waits to perform
- *
- * 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 != 0xff && (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);
-
-#ifdef ATA_DEBUG
- if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
- ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
- status);
-#endif
-
- return status;
-}
-
static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
{
qc->tf.ctl |= ATA_NIEN;
return *(struct ata_port **)&host->hostdata[0];
}
+
+/**************************************************************************
+ * PMP - drivers/ata/libata-pmp.c
+ */
+extern const struct ata_port_operations sata_pmp_port_ops;
+
+extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
+extern void sata_pmp_error_handler(struct ata_port *ap);
+
+
+/**************************************************************************
+ * SFF - drivers/ata/libata-sff.c
+ */
+#ifdef CONFIG_ATA_SFF
+
+extern const struct ata_port_operations ata_sff_port_ops;
+extern const struct ata_port_operations ata_bmdma_port_ops;
+
+/* PIO only, sg_tablesize and dma_boundary limits can be removed */
+#define ATA_PIO_SHT(drv_name) \
+ ATA_BASE_SHT(drv_name), \
+ .sg_tablesize = LIBATA_MAX_PRD, \
+ .dma_boundary = ATA_DMA_BOUNDARY
+
+#define ATA_BMDMA_SHT(drv_name) \
+ ATA_BASE_SHT(drv_name), \
+ .sg_tablesize = LIBATA_MAX_PRD, \
+ .dma_boundary = ATA_DMA_BOUNDARY
+
+extern void ata_sff_qc_prep(struct ata_queued_cmd *qc);
+extern void ata_sff_dumb_qc_prep(struct ata_queued_cmd *qc);
+extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
+extern u8 ata_sff_check_status(struct ata_port *ap);
+extern u8 ata_sff_altstatus(struct ata_port *ap);
+extern int ata_sff_busy_sleep(struct ata_port *ap,
+ unsigned long timeout_pat, unsigned long timeout);
+extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
+extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
+extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
+extern void ata_sff_exec_command(struct ata_port *ap,
+ const struct ata_taskfile *tf);
+extern unsigned int ata_sff_data_xfer(struct ata_device *dev,
+ unsigned char *buf, unsigned int buflen, int rw);
+extern unsigned int ata_sff_data_xfer_noirq(struct ata_device *dev,
+ unsigned char *buf, unsigned int buflen, int rw);
+extern u8 ata_sff_irq_on(struct ata_port *ap);
+extern void ata_sff_irq_clear(struct ata_port *ap);
+extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
+ u8 status, int in_wq);
+extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
+extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
+extern unsigned int ata_sff_host_intr(struct ata_port *ap,
+ struct ata_queued_cmd *qc);
+extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
+extern void ata_sff_freeze(struct ata_port *ap);
+extern void ata_sff_thaw(struct ata_port *ap);
+extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
+extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
+ u8 *r_err);
+extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
+ unsigned long deadline);
+extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
+ unsigned long deadline);
+extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
+ unsigned long deadline);
+extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
+extern void ata_sff_error_handler(struct ata_port *ap);
+extern void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc);
+extern int ata_sff_port_start(struct ata_port *ap);
+extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
+extern unsigned long ata_bmdma_mode_filter(struct ata_device *dev,
+ unsigned long xfer_mask);
+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_bus_reset(struct ata_port *ap);
+
+#ifdef CONFIG_PCI
+extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
+extern int ata_pci_bmdma_init(struct ata_host *host);
+extern int ata_pci_sff_init_host(struct ata_host *host);
+extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
+ const struct ata_port_info * const * ppi,
+ struct ata_host **r_host);
+extern int ata_pci_sff_activate_host(struct ata_host *host,
+ irq_handler_t irq_handler,
+ struct scsi_host_template *sht);
+extern int ata_pci_sff_init_one(struct pci_dev *pdev,
+ const struct ata_port_info * const * ppi,
+ struct scsi_host_template *sht, void *host_priv);
+#endif /* CONFIG_PCI */
+
+/**
+ * ata_sff_pause - Flush writes and pause 400 nanoseconds.
+ * @ap: Port to wait for.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static inline void ata_sff_pause(struct ata_port *ap)
+{
+ ata_sff_altstatus(ap);
+ ndelay(400);
+}
+
+/**
+ * ata_sff_busy_wait - Wait for a port status register
+ * @ap: Port to wait for.
+ * @bits: bits that must be clear
+ * @max: number of 10uS waits to perform
+ *
+ * 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_sff_busy_wait(struct ata_port *ap, unsigned int bits,
+ unsigned int max)
+{
+ u8 status;
+
+ do {
+ udelay(10);
+ status = ap->ops->sff_check_status(ap);
+ max--;
+ } while (status != 0xff && (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_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
+
+#ifdef ATA_DEBUG
+ if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
+ ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
+ status);
+#endif
+
+ return status;
+}
+#endif /* CONFIG_ATA_SFF */
+
#endif /* __LINUX_LIBATA_H__ */
projects / linux-2.6 / blobdiff