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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-13 21:39:36 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-13 21:39:36 +0200
commit97100fc816badbbc162644cfde7ad39ae9211fb4 (patch)
tree904faf5453c2dea32fa3fde5fda230118f3effda /include
parentbe3c096ebdbe3c828aacb5473751a22840753eff (diff)
ide: add device flags
Add 'unsigned long dev_flags' to ide_drive_t and convert bitfields to IDE_DFLAG_* flags. While at it: - IDE_DFLAG_ADDRESSING -> IDE_DFLAG_LBA48 - fixup some comments - remove needless g->flags zeroing from ide*_probe() There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ide.h100
1 files changed, 73 insertions, 27 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 90d53c99fe9..b538d2e6dcb 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -459,6 +459,55 @@ enum {
IDE_AFLAG_NO_AUTOCLOSE = (1 << 29),
};
+/* device flags */
+enum {
+ /* restore settings after device reset */
+ IDE_DFLAG_KEEP_SETTINGS = (1 << 0),
+ /* device is using DMA for read/write */
+ IDE_DFLAG_USING_DMA = (1 << 1),
+ /* okay to unmask other IRQs */
+ IDE_DFLAG_UNMASK = (1 << 2),
+ /* don't attempt flushes */
+ IDE_DFLAG_NOFLUSH = (1 << 3),
+ /* DSC overlap */
+ IDE_DFLAG_DSC_OVERLAP = (1 << 4),
+ /* give potential excess bandwidth */
+ IDE_DFLAG_NICE1 = (1 << 5),
+ /* device is physically present */
+ IDE_DFLAG_PRESENT = (1 << 6),
+ /* device ejected hint */
+ IDE_DFLAG_DEAD = (1 << 7),
+ /* id read from device (synthetic if not set) */
+ IDE_DFLAG_ID_READ = (1 << 8),
+ IDE_DFLAG_NOPROBE = (1 << 9),
+ /* need to do check_media_change() */
+ IDE_DFLAG_REMOVABLE = (1 << 10),
+ /* needed for removable devices */
+ IDE_DFLAG_ATTACH = (1 << 11),
+ IDE_DFLAG_FORCED_GEOM = (1 << 12),
+ /* disallow setting unmask bit */
+ IDE_DFLAG_NO_UNMASK = (1 << 13),
+ /* disallow enabling 32-bit I/O */
+ IDE_DFLAG_NO_IO_32BIT = (1 << 14),
+ /* for removable only: door lock/unlock works */
+ IDE_DFLAG_DOORLOCKING = (1 << 15),
+ /* disallow DMA */
+ IDE_DFLAG_NODMA = (1 << 16),
+ /* powermanagment told us not to do anything, so sleep nicely */
+ IDE_DFLAG_BLOCKED = (1 << 17),
+ /* ide-scsi emulation */
+ IDE_DFLAG_SCSI = (1 << 18),
+ /* sleeping & sleep field valid */
+ IDE_DFLAG_SLEEPING = (1 << 19),
+ IDE_DFLAG_POST_RESET = (1 << 20),
+ IDE_DFLAG_UDMA33_WARNED = (1 << 21),
+ IDE_DFLAG_LBA48 = (1 << 22),
+ /* status of write cache */
+ IDE_DFLAG_WCACHE = (1 << 23),
+ /* used for ignoring ATA_DF */
+ IDE_DFLAG_NOWERR = (1 << 24),
+};
+
struct ide_drive_s {
char name[4]; /* drive name, such as "hda" */
char driver_req[10]; /* requests specific driver */
@@ -475,6 +524,8 @@ struct ide_drive_s {
#endif
struct hwif_s *hwif; /* actually (ide_hwif_t *) */
+ unsigned long dev_flags;
+
unsigned long sleep; /* sleep until this time */
unsigned long service_start; /* time we started last request */
unsigned long service_time; /* service time of last request */
@@ -487,32 +538,6 @@ struct ide_drive_s {
u8 state; /* retry state */
u8 waiting_for_dma; /* dma currently in progress */
- unsigned keep_settings : 1; /* restore settings after drive reset */
- unsigned using_dma : 1; /* disk is using dma for read/write */
- unsigned unmask : 1; /* okay to unmask other irqs */
- unsigned noflush : 1; /* don't attempt flushes */
- unsigned dsc_overlap : 1; /* DSC overlap */
- unsigned nice1 : 1; /* give potential excess bandwidth */
- unsigned present : 1; /* drive is physically present */
- unsigned dead : 1; /* device ejected hint */
- unsigned id_read : 1; /* 1=id read from disk 0 = synthetic */
- unsigned noprobe : 1; /* from: hdx=noprobe */
- unsigned removable : 1; /* 1 if need to do check_media_change */
- unsigned attach : 1; /* needed for removable devices */
- unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
- unsigned no_unmask : 1; /* disallow setting unmask bit */
- unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
- unsigned doorlocking : 1; /* for removable only: door lock/unlock works */
- unsigned nodma : 1; /* disallow DMA */
- unsigned blocked : 1; /* 1=powermanagment told us not to do anything, so sleep nicely */
- unsigned scsi : 1; /* 0=default, 1=ide-scsi emulation */
- unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
- unsigned post_reset : 1;
- unsigned udma33_warned : 1;
- unsigned addressing : 1; /* 0=28-bit, 1=48-bit */
- unsigned wcache : 1; /* status of write cache */
- unsigned nowerr : 1; /* used for ignoring ATA_DF */
-
u8 quirk_list; /* considered quirky, set for a specific host */
u8 init_speed; /* transfer rate set at boot */
u8 current_speed; /* current transfer rate set */
@@ -826,6 +851,22 @@ static int set_##name(ide_drive_t *drive, int arg) \
return 0; \
}
+#define ide_devset_get_flag(name, flag) \
+static int get_##name(ide_drive_t *drive) \
+{ \
+ return !!(drive->dev_flags & flag); \
+}
+
+#define ide_devset_set_flag(name, flag) \
+static int set_##name(ide_drive_t *drive, int arg) \
+{ \
+ if (arg) \
+ drive->dev_flags |= flag; \
+ else \
+ drive->dev_flags &= ~flag; \
+ return 0; \
+}
+
#define __IDE_DEVSET(_name, _flags, _get, _set) \
const struct ide_devset ide_devset_##_name = \
__DEVSET(_flags, _get, _set)
@@ -861,6 +902,11 @@ ide_devset_get(_name, _field); \
ide_devset_set(_name, _field); \
IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
+#define ide_devset_rw_flag(_name, _field) \
+ide_devset_get_flag(_name, _field); \
+ide_devset_set_flag(_name, _field); \
+IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name)
+
struct ide_proc_devset {
const char *name;
const struct ide_devset *setting;
@@ -1587,6 +1633,6 @@ static inline ide_drive_t *ide_get_pair_dev(ide_drive_t *drive)
{
ide_drive_t *peer = &drive->hwif->drives[(drive->dn ^ 1) & 1];
- return peer->present ? peer : NULL;
+ return (peer->dev_flags & IDE_DFLAG_PRESENT) ? peer : NULL;
}
#endif /* _IDE_H */