#include <linux/delay.h>
#include <linux/interrupt.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>
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), /* AN configured */
+ ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */
+ ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */
ATA_DFLAG_CFG_MASK = (1 << 12) - 1,
ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */
ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */
ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */
+ ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
ATA_DFLAG_INIT_MASK = (1 << 16) - 1,
ATA_DFLAG_DETACH = (1 << 16),
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 */
+ ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */
/* The following flag belongs to ap->pflags but is kept in
* ap->flags because it's referenced in many LLDs and will be
ATA_TMOUT_INTERNAL = 30 * HZ,
ATA_TMOUT_INTERNAL_QUICK = 5 * HZ,
+ /* FIXME: GoVault needs 2s but we can't afford that without
+ * parallel probing. 800ms is enough for iVDR disk
+ * HHD424020F7SV00. Increase to 2secs when parallel probing
+ * is in place.
+ */
+ ATA_TMOUT_FF_WAIT = 4 * HZ / 5,
+
/* ATA bus states */
BUS_UNKNOWN = 0,
BUS_DMA = 1,
ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */
ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */
ATA_EHI_QUIET = (1 << 3), /* be quiet */
+ ATA_EHI_LPM = (1 << 4), /* link power management action */
ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */
ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
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 */
+ ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */
- /* DMA mask for user DMA control: User visible values; DO NOT
+ /* 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 */
unsigned long deadline);
typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
+/*
+ * host pm policy: If you alter this, you also need to alter libata-scsi.c
+ * (for the ascii descriptions)
+ */
+enum link_pm {
+ NOT_AVAILABLE,
+ MIN_POWER,
+ MAX_PERFORMANCE,
+ MEDIUM_POWER,
+};
+extern struct class_device_attribute class_device_attr_link_power_management_policy;
+
struct ata_ioports {
void __iomem *cmd_addr;
void __iomem *data_addr;
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;
pm_message_t pm_mesg;
int *pm_result;
+ enum link_pm pm_policy;
struct timer_list fastdrain_timer;
unsigned long fastdrain_cnt;
int (*port_suspend) (struct ata_port *ap, pm_message_t mesg);
int (*port_resume) (struct ata_port *ap);
-
+ int (*enable_pm) (struct ata_port *ap, enum link_pm policy);
+ void (*disable_pm) (struct ata_port *ap);
int (*port_start) (struct ata_port *ap);
void (*port_stop) (struct ata_port *ap);
unsigned short udma; /* t2CYCTYP/2 */
};
-#define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin)
+#define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin)
extern const unsigned long sata_deb_timing_normal[];
extern const unsigned long sata_deb_timing_hotplug[];
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 void ata_port_queue_task(struct ata_port *ap, work_func_t fn,
void *data, unsigned long delay);
extern void ata_tf_to_fis(const struct ata_taskfile *tf,
u8 pmp, int is_cmd, u8 *fis);
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 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 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 void ata_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data);
extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf,
extern void ata_id_c_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len);
extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown);
-extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
-extern void ata_bmdma_start (struct ata_queued_cmd *qc);
+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);
#ifdef CONFIG_PCI
struct pci_dev;
-extern int ata_pci_init_one (struct pci_dev *pdev,
+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);
+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);
/*
* 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;
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;
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