#include <linux/delay.h>
#include <linux/interrupt.h>
-#include <linux/pci.h>
#include <linux/dma-mapping.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
#include <linux/io.h>
#include <linux/ata.h>
#include <linux/workqueue.h>
/* 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_DFLAG_FLUSH_EXT = (1 << 4), /* do FLUSH_EXT instead of FLUSH */
ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */
ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */
- ATA_DFLAG_AN = (1 << 7), /* device supports AN */
+ ATA_DFLAG_AN = (1 << 7), /* AN configured */
ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
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 */
+ ATA_DEV_PMP = 5, /* SATA port multiplier */
+ ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
+ ATA_DEV_SEMB = 7, /* SEMB */
+ ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
+ ATA_DEV_NONE = 9, /* no device */
/* struct ata_link flags */
ATA_LFLAG_HRST_TO_RESUME = (1 << 0), /* hardreset to resume link */
ATA_LFLAG_SKIP_D2H_BSY = (1 << 1), /* can't wait for the first D2H
* Register FIS clearing BSY */
+ ATA_LFLAG_NO_SRST = (1 << 2), /* avoid softreset */
+ ATA_LFLAG_ASSUME_ATA = (1 << 3), /* assume ATA class */
+ ATA_LFLAG_ASSUME_SEMB = (1 << 4), /* assume SEMB class */
+ ATA_LFLAG_ASSUME_CLASS = ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
+ ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
+ ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
/* struct ata_port flags */
ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
ATA_FLAG_AN = (1 << 18), /* controller supports AN */
+ ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
/* The following flag belongs to ap->pflags but is kept in
* ap->flags because it's referenced in many LLDs and will be
ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */
ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */
ATA_PFLAG_INITIALIZING = (1 << 7), /* being initialized, don't touch */
+ ATA_PFLAG_RESETTING = (1 << 8), /* reset in progress */
ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */
ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */
ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,
ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */
+ ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */
ATA_QCFLAG_FAILED = (1 << 16), /* cmd failed and is owned by EH */
ATA_QCFLAG_SENSE_VALID = (1 << 17), /* sense data valid */
/* ering size */
ATA_ERING_SIZE = 32,
+ /* return values for ->qc_defer */
+ ATA_DEFER_LINK = 1,
+ ATA_DEFER_PORT = 2,
+
/* desc_len for ata_eh_info and context */
ATA_EH_DESC_LEN = 80,
ATA_EH_REVALIDATE = (1 << 0),
ATA_EH_SOFTRESET = (1 << 1),
ATA_EH_HARDRESET = (1 << 2),
+ ATA_EH_ENABLE_LINK = (1 << 3),
ATA_EH_RESET_MASK = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE,
/* how hard are we gonna try to probe/recover devices */
ATA_PROBE_MAX_TRIES = 3,
ATA_EH_DEV_TRIES = 3,
+ ATA_EH_PMP_TRIES = 5,
+ ATA_EH_PMP_LINK_TRIES = 3,
+
+ SATA_PMP_SCR_TIMEOUT = 250,
/* Horkage types. May be set by libata or controller on drives
(some horkage may be drive/controller pair dependant */
ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
+ ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */
+ ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
+
+ /* DMA mask for user DMA control: User visible values; DO NOT
+ renumber */
+ ATA_DMA_MASK_ATA = (1 << 0), /* DMA on ATA Disk */
+ ATA_DMA_MASK_ATAPI = (1 << 1), /* DMA on ATAPI */
+ ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */
};
enum hsm_task_states {
unsigned long flags; /* ATA_QCFLAG_xxx */
unsigned int tag;
unsigned int n_elem;
+ unsigned int n_iter;
unsigned int orig_n_elem;
int dma_dir;
unsigned int nbytes;
unsigned int curbytes;
- unsigned int cursg;
+ struct scatterlist *cursg;
unsigned int cursg_ofs;
struct scatterlist sgent;
/* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
u64 n_sectors; /* size of device, if ATA */
unsigned int class; /* ATA_DEV_xxx */
- u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
+
+ union {
+ u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
+ u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
+ };
+
u8 pio_mode;
u8 dma_mode;
u8 xfer_mode;
struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
unsigned long qc_allocated;
unsigned int qc_active;
+ int nr_active_links; /* #links with active qcs */
struct ata_link link; /* host default link */
int nr_pmp_links; /* nr of available PMP links */
struct ata_link *pmp_link; /* array of PMP links */
+ struct ata_link *excl_link; /* for PMP qc exclusion */
struct ata_port_stats stats;
struct ata_host *host;
void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
+ int (*qc_defer) (struct ata_queued_cmd *qc);
void (*qc_prep) (struct ata_queued_cmd *qc);
unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
+ /* port multiplier */
+ void (*pmp_attach) (struct ata_port *ap);
+ void (*pmp_detach) (struct ata_port *ap);
+
/* Error handlers. ->error_handler overrides ->eng_timeout and
* indicates that new-style EH is in place.
*/
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);
-#ifdef CONFIG_PCI
-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);
-#endif /* CONFIG_PCI */
+
extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
const struct ata_port_info * const * ppi, int n_ports);
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_scsi_media_change_notify(struct ata_device *atadev);
extern void ata_sas_port_destroy(struct ata_port *);
extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
struct ata_port_info *, struct Scsi_Host *);
unsigned int buflen, int write_data);
extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data);
+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);
/* libata-acpi.c */
#ifdef CONFIG_ATA_ACPI
extern int ata_acpi_cbl_80wire(struct ata_port *ap);
+int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm);
+int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *stm);
#else
static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; }
#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) */
extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long);
#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
*/
extern int ata_link_abort(struct ata_link *link);
extern int ata_port_abort(struct ata_port *ap);
extern int ata_port_freeze(struct ata_port *ap);
+extern int sata_async_notification(struct ata_port *ap);
extern void ata_eh_freeze_port(struct ata_port *ap);
extern void ata_eh_thaw_port(struct ata_port *ap);
{
ata_ehi_schedule_probe(ehi);
ehi->flags |= ATA_EHI_HOTPLUGGED;
+ ehi->action |= ATA_EH_ENABLE_LINK;
ehi->err_mask |= AC_ERR_ATA_BUS;
}
/*
* qc helpers
*/
-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)
{
+ qc->n_iter = 0;
if (qc->n_elem)
return qc->__sg;
if (qc->pad_len)
{
if (sg == &qc->pad_sgent)
return NULL;
- if (++sg - qc->__sg < qc->n_elem)
- return sg;
+ if (++qc->n_iter < qc->n_elem)
+ return sg_next(sg);
if (qc->pad_len)
return &qc->pad_sgent;
return NULL;
*/
static inline unsigned int ata_class_enabled(unsigned int class)
{
- return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI;
+ return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
+ class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
}
static inline unsigned int ata_class_disabled(unsigned int class)
{
- return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP;
+ return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
+ class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP;
}
static inline unsigned int ata_class_absent(unsigned int class)
return 1;
}
+static inline int ata_link_active(struct ata_link *link)
+{
+ return ata_tag_valid(link->active_tag) || link->sactive;
+}
+
static inline struct ata_link *ata_port_first_link(struct ata_port *ap)
{
if (ap->nr_pmp_links)
qc->dma_dir = DMA_NONE;
qc->__sg = NULL;
qc->flags = 0;
- qc->cursg = qc->cursg_ofs = 0;
+ qc->cursg = NULL;
+ qc->cursg_ofs = 0;
qc->nbytes = qc->curbytes = 0;
qc->n_elem = 0;
+ qc->n_iter = 0;
qc->err_mask = 0;
qc->pad_len = 0;
qc->sect_size = ATA_SECT_SIZE;
git.openpandora.org / pandora-kernel.git / blobdiff