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-rw-r--r--include/linux/libata.h65
1 files changed, 42 insertions, 23 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 45fb2967b66..15b77b8dc7e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -37,6 +37,7 @@
#include <scsi/scsi_host.h>
#include <linux/acpi.h>
#include <linux/cdrom.h>
+#include <linux/sched.h>
/*
* Define if arch has non-standard setup. This is a _PCI_ standard
@@ -172,6 +173,7 @@ enum {
ATA_LFLAG_NO_RETRY = (1 << 5), /* don't retry this link */
ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */
ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */
+ ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */
/* struct ata_port flags */
ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
@@ -196,7 +198,7 @@ enum {
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 */
+ ATA_FLAG_LPM = (1 << 20), /* driver can handle LPM */
ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
* management */
ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
@@ -324,12 +326,11 @@ enum {
ATA_EH_HARDRESET = (1 << 2), /* meaningful only in ->prereset */
ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
ATA_EH_ENABLE_LINK = (1 << 3),
- ATA_EH_LPM = (1 << 4), /* link power management action */
ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
- ATA_EH_ENABLE_LINK | ATA_EH_LPM,
+ ATA_EH_ENABLE_LINK,
/* ata_eh_info->flags */
ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
@@ -341,7 +342,7 @@ enum {
ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */
ATA_EHI_PRINTINFO = (1 << 18), /* print configuration info */
ATA_EHI_SETMODE = (1 << 19), /* configure transfer mode */
- ATA_EHI_POST_SETMODE = (1 << 20), /* revaildating after setmode */
+ ATA_EHI_POST_SETMODE = (1 << 20), /* revalidating after setmode */
ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
@@ -377,7 +378,6 @@ enum {
ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
- ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */
ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
ATA_HORKAGE_STUCK_ERR = (1 << 9), /* stuck ERR on next PACKET */
ATA_HORKAGE_BRIDGE_OK = (1 << 10), /* no bridge limits */
@@ -464,6 +464,22 @@ enum ata_completion_errors {
AC_ERR_NCQ = (1 << 10), /* marker for offending NCQ qc */
};
+/*
+ * Link power management policy: If you alter this, you also need to
+ * alter libata-scsi.c (for the ascii descriptions)
+ */
+enum ata_lpm_policy {
+ ATA_LPM_UNKNOWN,
+ ATA_LPM_MAX_POWER,
+ ATA_LPM_MED_POWER,
+ ATA_LPM_MIN_POWER,
+};
+
+enum ata_lpm_hints {
+ ATA_LPM_EMPTY = (1 << 0), /* port empty/probing */
+ ATA_LPM_HIPM = (1 << 1), /* may use HIPM */
+};
+
/* forward declarations */
struct scsi_device;
struct ata_port_operations;
@@ -478,16 +494,6 @@ typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
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 device_attribute dev_attr_link_power_management_policy;
extern struct device_attribute dev_attr_unload_heads;
extern struct device_attribute dev_attr_em_message_type;
@@ -530,6 +536,10 @@ struct ata_host {
void *private_data;
struct ata_port_operations *ops;
unsigned long flags;
+
+ struct mutex eh_mutex;
+ struct task_struct *eh_owner;
+
#ifdef CONFIG_ATA_ACPI
acpi_handle acpi_handle;
#endif
@@ -560,13 +570,13 @@ struct ata_queued_cmd {
unsigned int extrabytes;
unsigned int curbytes;
- struct scatterlist *cursg;
- unsigned int cursg_ofs;
-
struct scatterlist sgent;
struct scatterlist *sg;
+ struct scatterlist *cursg;
+ unsigned int cursg_ofs;
+
unsigned int err_mask;
struct ata_taskfile result_tf;
ata_qc_cb_t complete_fn;
@@ -604,6 +614,7 @@ struct ata_device {
union acpi_object *gtf_cache;
unsigned int gtf_filter;
#endif
+ struct device tdev;
/* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
u64 n_sectors; /* size of device, if ATA */
u64 n_native_sectors; /* native size, if ATA */
@@ -690,6 +701,7 @@ struct ata_link {
struct ata_port *ap;
int pmp; /* port multiplier port # */
+ struct device tdev;
unsigned int active_tag; /* active tag on this link */
u32 sactive; /* active NCQ commands */
@@ -699,6 +711,7 @@ struct ata_link {
unsigned int hw_sata_spd_limit;
unsigned int sata_spd_limit;
unsigned int sata_spd; /* current SATA PHY speed */
+ enum ata_lpm_policy lpm_policy;
/* record runtime error info, protected by host_set lock */
struct ata_eh_info eh_info;
@@ -707,6 +720,8 @@ struct ata_link {
struct ata_device device[ATA_MAX_DEVICES];
};
+#define ATA_LINK_CLEAR_BEGIN offsetof(struct ata_link, active_tag)
+#define ATA_LINK_CLEAR_END offsetof(struct ata_link, device[0])
struct ata_port {
struct Scsi_Host *scsi_host; /* our co-allocated scsi host */
@@ -752,6 +767,7 @@ struct ata_port {
struct ata_port_stats stats;
struct ata_host *host;
struct device *dev;
+ struct device tdev;
struct mutex scsi_scan_mutex;
struct delayed_work hotplug_task;
@@ -767,7 +783,7 @@ struct ata_port {
pm_message_t pm_mesg;
int *pm_result;
- enum link_pm pm_policy;
+ enum ata_lpm_policy target_lpm_policy;
struct timer_list fastdrain_timer;
unsigned long fastdrain_cnt;
@@ -833,8 +849,8 @@ struct ata_port_operations {
int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
void (*pmp_attach)(struct ata_port *ap);
void (*pmp_detach)(struct ata_port *ap);
- int (*enable_pm)(struct ata_port *ap, enum link_pm policy);
- void (*disable_pm)(struct ata_port *ap);
+ int (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
+ unsigned hints);
/*
* Start, stop, suspend and resume
@@ -946,6 +962,8 @@ 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 sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
+ bool spm_wakeup);
extern int sata_link_hardreset(struct ata_link *link,
const unsigned long *timing, unsigned long deadline,
bool *online, int (*check_ready)(struct ata_link *));
@@ -991,8 +1009,9 @@ extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
extern void ata_host_resume(struct ata_host *host);
#endif
extern int ata_ratelimit(void);
-extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
- unsigned long interval, unsigned long timeout);
+extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
+extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
+ u32 val, unsigned long interval, unsigned long timeout);
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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-15 07:12:51 +0000