Merge ../bleed-2.6

1 files changed, 81 insertions, 32 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index ceee1fc42c60..00a8a5738858 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -91,12 +91,13 @@ enum {
         ATA_SHT_EMULATED        = 1,
         ATA_SHT_CMD_PER_LUN     = 1,
         ATA_SHT_THIS_ID         = -1,
-        ATA_SHT_USE_CLUSTERING  = 0,
+        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_LOCK_SECTORS  = (1 << 2), /* don't adjust max_sectors */
+        ATA_DFLAG_LBA           = (1 << 3), /* device supports LBA */
 
         ATA_DEV_UNKNOWN         = 0,    /* unknown device */
         ATA_DEV_ATA             = 1,    /* ATA device */
@@ -154,17 +155,21 @@ enum {
         ATA_SHIFT_UDMA          = 0,
         ATA_SHIFT_MWDMA         = 8,
         ATA_SHIFT_PIO           = 11,
+        
+        /* Masks for port functions */
+        ATA_PORT_PRIMARY        = (1 << 0),
+        ATA_PORT_SECONDARY      = (1 << 1),
 };
 
-enum pio_task_states {
-        PIO_ST_UNKNOWN,
-        PIO_ST_IDLE,
-        PIO_ST_POLL,
-        PIO_ST_TMOUT,
-        PIO_ST,
-        PIO_ST_LAST,
-        PIO_ST_LAST_POLL,
-        PIO_ST_ERR,
+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,
 };
 
 /* forward declarations */
@@ -197,7 +202,7 @@ struct ata_ioports {
 struct ata_probe_ent {
         struct list_head        node;
         struct device           *dev;
-        struct ata_port_operations      *port_ops;
+        const struct ata_port_operations *port_ops;
         Scsi_Host_Template      *sht;
         struct ata_ioports      port[ATA_MAX_PORTS];
         unsigned int            n_ports;
@@ -220,7 +225,7 @@ struct ata_host_set {
         void __iomem            *mmio_base;
         unsigned int            n_ports;
         void                    *private_data;
-        struct ata_port_operations *ops;
+        const struct ata_port_operations *ops;
         struct ata_port *       ports[0];
 };
 
@@ -278,15 +283,18 @@ struct ata_device {
         u8                      xfer_mode;
         unsigned int            xfer_shift;     /* ATA_SHIFT_xxx */
 
-        /* cache info about current transfer mode */
-        u8                      xfer_protocol;  /* taskfile xfer protocol */
-        u8                      read_cmd;       /* opcode to use on read */
-        u8                      write_cmd;      /* opcode to use on write */
+        unsigned int            multi_count;    /* sectors count for
+                                                   READ/WRITE MULTIPLE */
+
+        /* 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 */
-        struct ata_port_operations      *ops;
+        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 */
@@ -319,7 +327,7 @@ struct ata_port {
         struct work_struct      packet_task;
 
         struct work_struct      pio_task;
-        unsigned int            pio_task_state;
+        unsigned int            hsm_task_state;
         unsigned long           pio_task_timeout;
 
         void                    *private_data;
@@ -333,10 +341,10 @@ struct ata_port_operations {
         void (*set_piomode) (struct ata_port *, struct ata_device *);
         void (*set_dmamode) (struct ata_port *, struct ata_device *);
 
-        void (*tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
+        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, 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);
         u8   (*check_err)(struct ata_port *ap);
@@ -377,9 +385,22 @@ struct ata_port_info {
         unsigned long           pio_mask;
         unsigned long           mwdma_mask;
         unsigned long           udma_mask;
-        struct ata_port_operations      *port_ops;
+        const struct ata_port_operations *port_ops;
+};
+
+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);
@@ -392,7 +413,7 @@ extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_i
                              unsigned int n_ports);
 extern void ata_pci_remove_one (struct pci_dev *pdev);
 #endif /* CONFIG_PCI */
-extern int ata_device_add(struct ata_probe_ent *ent);
+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(Scsi_Host_Template *sht);
 extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
@@ -400,19 +421,21 @@ extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmn
 extern int ata_scsi_error(struct Scsi_Host *host);
 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_ratelimit(void);
+
 /*
  * Default driver ops implementations
  */
-extern void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf);
+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(struct ata_taskfile *tf, u8 *fis, u8 pmp);
-extern void ata_tf_from_fis(u8 *fis, 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 u8 ata_chk_err(struct ata_port *ap);
-extern void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf);
+extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf);
 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);
@@ -423,8 +446,8 @@ 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(struct ata_taskfile *tf);
-extern void ata_dev_id_string(u16 *id, unsigned char *s,
+extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
+extern void ata_dev_id_string(const u16 *id, unsigned char *s,
                               unsigned int ofs, unsigned int len);
 extern void ata_dev_config(struct ata_port *ap, unsigned int i);
 extern void ata_bmdma_setup (struct ata_queued_cmd *qc);
@@ -441,6 +464,32 @@ extern int ata_std_bios_param(struct scsi_device *sdev,
                               sector_t capacity, int geom[]);
 extern int ata_scsi_slave_config(struct scsi_device *sdev);
 
+/*
+ * Timing helpers
+ */
+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 {
@@ -452,8 +501,8 @@ struct pci_bits {
 
 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);
-extern int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits);
+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);
 
 #endif /* CONFIG_PCI */
 
@@ -463,7 +512,7 @@ static inline unsigned int ata_tag_valid(unsigned int tag)
         return (tag < ATA_MAX_QUEUE) ? 1 : 0;
 }
 
-static inline unsigned int ata_dev_present(struct ata_device *dev)
+static inline unsigned int ata_dev_present(const struct ata_device *dev)
 {
         return ((dev->class == ATA_DEV_ATA) ||
                 (dev->class == ATA_DEV_ATAPI));
@@ -662,7 +711,7 @@ 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(struct ata_device *dev)
+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) ||