sl82c105: rework PIO support (take 2)

[linux-2.6-omap-h63xx.git] / include / linux / ide.h

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 04e0fa97ac99aa1ae25a928aa6b49ab82875e93a..418dfb5adadd80b93affaf08b6a0d809cf5bb3dd 100644 (file)
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -613,8 +613,8 @@ typedef struct ide_drive_s {
 
         u8     quirk_list;     /* considered quirky, set for a specific host */
         u8     init_speed;     /* transfer rate set at boot */
-        u8     pio_speed;      /* unused by core, used by some drivers for fallback from DMA */
         u8     current_speed;  /* current transfer rate set */
+       u8      desired_speed;  /* desired transfer rate set */
         u8     dn;             /* now wide spread use */
         u8     wcache;         /* status of write cache */
        u8      acoustic;       /* acoustic management */
@@ -636,7 +636,6 @@ typedef struct ide_drive_s {
        unsigned int    bios_cyl;       /* BIOS/fdisk/LILO number of cyls */
        unsigned int    cyl;            /* "real" number of cyls */
        unsigned int    drive_data;     /* use by tuneproc/selectproc */
-       unsigned int    usage;          /* current "open()" count for drive */
        unsigned int    failures;       /* current failure count */
        unsigned int    max_failures;   /* maximum allowed failure count */
        u64             probed_capacity;/* initial reported media capacity (ide-cd only currently) */
@@ -736,23 +735,22 @@ typedef struct hwif_s {
        int (*ide_dma_end)(ide_drive_t *drive);
        int (*ide_dma_check)(ide_drive_t *drive);
        int (*ide_dma_on)(ide_drive_t *drive);
-       int (*ide_dma_off_quietly)(ide_drive_t *drive);
+       void (*dma_off_quietly)(ide_drive_t *drive);
        int (*ide_dma_test_irq)(ide_drive_t *drive);
-       int (*ide_dma_host_on)(ide_drive_t *drive);
-       int (*ide_dma_host_off)(ide_drive_t *drive);
+       void (*ide_dma_clear_irq)(ide_drive_t *drive);
+       void (*dma_host_on)(ide_drive_t *drive);
+       void (*dma_host_off)(ide_drive_t *drive);
        int (*ide_dma_lostirq)(ide_drive_t *drive);
        int (*ide_dma_timeout)(ide_drive_t *drive);
 
        void (*OUTB)(u8 addr, unsigned long port);
        void (*OUTBSYNC)(ide_drive_t *drive, u8 addr, unsigned long port);
        void (*OUTW)(u16 addr, unsigned long port);
-       void (*OUTL)(u32 addr, unsigned long port);
        void (*OUTSW)(unsigned long port, void *addr, u32 count);
        void (*OUTSL)(unsigned long port, void *addr, u32 count);
 
        u8  (*INB)(unsigned long port);
        u16 (*INW)(unsigned long port);
-       u32 (*INL)(unsigned long port);
        void (*INSW)(unsigned long port, void *addr, u32 count);
        void (*INSL)(unsigned long port, void *addr, u32 count);
 
@@ -774,7 +772,6 @@ typedef struct hwif_s {
        unsigned int cursg;
        unsigned int cursg_ofs;
 
-       int             mmio;           /* hosts iomio (0) or custom (2) select */
        int             rqsize;         /* max sectors per request */
        int             irq;            /* our irq number */
 
@@ -802,12 +799,11 @@ typedef struct hwif_s {
        unsigned        udma_four  : 1; /* 1=ATA-66 capable, 0=default */
        unsigned        no_lba48   : 1; /* 1 = cannot do LBA48 */
        unsigned        no_lba48_dma : 1; /* 1 = cannot do LBA48 DMA */
-       unsigned        no_dsc     : 1; /* 0 default, 1 dsc_overlap disabled */
        unsigned        auto_poll  : 1; /* supports nop auto-poll */
        unsigned        sg_mapped  : 1; /* sg_table and sg_nents are ready */
        unsigned        no_io_32bit : 1; /* 1 = can not do 32-bit IO ops */
        unsigned        err_stops_fifo : 1; /* 1=data FIFO is cleared by an error */
-       unsigned        atapi_irq_bogon : 1; /* Generates spurious DMA interrupts in PIO mode */
+       unsigned        mmio       : 1; /* host uses MMIO */
 
        struct device   gendev;
        struct completion gendev_rel_comp; /* To deal with device release() */
@@ -864,6 +860,8 @@ typedef struct hwgroup_s {
        int (*expiry)(ide_drive_t *);
                /* ide_system_bus_speed */
        int pio_clock;
+       int req_gen;
+       int req_gen_timer;
 
        unsigned char cmd_buf[4];
 } ide_hwgroup_t;
@@ -1280,8 +1278,9 @@ int ide_in_drive_list(struct hd_driveid *, const struct drive_list_entry *);
 int __ide_dma_bad_drive(ide_drive_t *);
 int __ide_dma_good_drive(ide_drive_t *);
 int ide_use_dma(ide_drive_t *);
-int __ide_dma_off(ide_drive_t *);
+void ide_dma_off(ide_drive_t *);
 void ide_dma_verbose(ide_drive_t *);
+int ide_set_dma(ide_drive_t *);
 ide_startstop_t ide_dma_intr(ide_drive_t *);
 
 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
@@ -1291,9 +1290,9 @@ extern void ide_destroy_dmatable(ide_drive_t *);
 extern int ide_release_dma(ide_hwif_t *);
 extern void ide_setup_dma(ide_hwif_t *, unsigned long, unsigned int);
 
-extern int __ide_dma_host_off(ide_drive_t *);
-extern int __ide_dma_off_quietly(ide_drive_t *);
-extern int __ide_dma_host_on(ide_drive_t *);
+void ide_dma_host_off(ide_drive_t *);
+void ide_dma_off_quietly(ide_drive_t *);
+void ide_dma_host_on(ide_drive_t *);
 extern int __ide_dma_on(ide_drive_t *);
 extern int __ide_dma_check(ide_drive_t *);
 extern int ide_dma_setup(ide_drive_t *);
@@ -1305,8 +1304,9 @@ extern int __ide_dma_timeout(ide_drive_t *);
 
 #else
 static inline int ide_use_dma(ide_drive_t *drive) { return 0; }
-static inline int __ide_dma_off(ide_drive_t *drive) { return 0; }
+static inline void ide_dma_off(ide_drive_t *drive) { ; }
 static inline void ide_dma_verbose(ide_drive_t *drive) { ; }
+static inline int ide_set_dma(ide_drive_t *drive) { return 1; }
 #endif /* CONFIG_BLK_DEV_IDEDMA */
 
 #ifndef CONFIG_BLK_DEV_IDEDMA_PCI
@@ -1354,20 +1354,21 @@ extern int ide_dma_enable(ide_drive_t *drive);
 extern char *ide_xfer_verbose(u8 xfer_rate);
 extern void ide_toggle_bounce(ide_drive_t *drive, int on);
 extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
+int ide_use_fast_pio(ide_drive_t *);
 
 u8 ide_dump_status(ide_drive_t *, const char *, u8);
 
 typedef struct ide_pio_timings_s {
        int     setup_time;     /* Address setup (ns) minimum */
        int     active_time;    /* Active pulse (ns) minimum */
-       int     cycle_time;     /* Cycle time (ns) minimum = (setup + active + recovery) */
+       int     cycle_time;     /* Cycle time (ns) minimum = */
+                               /* active + recovery (+ setup for some chips) */
 } ide_pio_timings_t;
 
 typedef struct ide_pio_data_s {
        u8 pio_mode;
        u8 use_iordy;
        u8 overridden;
-       u8 blacklisted;
        unsigned int cycle_time;
 } ide_pio_data_t;