ide: /proc/ide/hd*/settings rework
* Add struct ide_devset, S_* flags, *DEVSET() & ide*_devset_*() macros.
* Add 'const struct ide_devset **settings' to ide_driver_t.
* Use 'const struct ide_devset **settings' in ide_drive_t instead of
'struct ide_settings_s *settings'. Then convert core code and device
drivers to use struct ide_devset and co.:
- device settings are no longer allocated dynamically for each device
but instead there is an unique struct ide_devset instance per setting
- device driver keeps the pointer to the table of pointers to its
settings in ide_driver_t.settings
- generic settings are kept in ide_generic_setting[]
- ide_proc_[un]register_driver(), ide_find_setting_by_name(),
ide_{read,write}_setting() and proc_ide_{read,write}_settings()
are updated accordingly
- ide*_add_settings() are removed
* Remove no longer used __ide_add_setting(), ide_add_setting(),
__ide_remove_setting() and auto_remove_settings().
* Remove no longer used TYPE_*, SETTING_*, ide_procset_t
and ide_settings_t.
* ->keep_settings, ->using_dma, ->unmask, ->noflush, ->dsc_overlap,
->nice1, ->addressing, ->wcache and ->nowerr ide_drive_t fields
can now be bitfield flags.
While at it:
* Rename ide_find_setting_by_name() to ide_find_setting().
* Rename write_wcache() to set_wcache().
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/include/linux/ide.h b/include/linux/ide.h
index ad09e7c..4667ec8 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -304,8 +304,8 @@
ide_started, /* a drive operation was started, handler was set */
} ide_startstop_t;
+struct ide_devset;
struct ide_driver_s;
-struct ide_settings_s;
#ifdef CONFIG_BLK_DEV_IDEACPI
struct ide_acpi_drive_link;
@@ -384,7 +384,7 @@
u16 *id; /* identification info */
#ifdef CONFIG_IDE_PROC_FS
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
- struct ide_settings_s *settings;/* /proc/ide/ drive settings */
+ const struct ide_devset **settings; /* /proc/ide/ drive settings */
#endif
struct hwif_s *hwif; /* actually (ide_hwif_t *) */
@@ -396,16 +396,16 @@
special_t special; /* special action flags */
select_t select; /* basic drive/head select reg value */
- u8 keep_settings; /* restore settings after drive reset */
- u8 using_dma; /* disk is using dma for read/write */
u8 retry_pio; /* retrying dma capable host in pio */
u8 state; /* retry state */
u8 waiting_for_dma; /* dma currently in progress */
- u8 unmask; /* okay to unmask other irqs */
- u8 noflush; /* don't attempt flushes */
- u8 dsc_overlap; /* DSC overlap */
- u8 nice1; /* give potential excess bandwidth */
+ 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 */
@@ -423,14 +423,15 @@
unsigned sleeping : 1; /* 1=sleeping & sleep field valid */
unsigned post_reset : 1;
unsigned udma33_warned : 1;
+ unsigned addressing : 2; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
+ unsigned wcache : 1; /* status of write cache */
+ unsigned nowerr : 1; /* used for ignoring ATA_DF */
- u8 addressing; /* 0=28-bit, 1=48-bit, 2=48-bit doing 28-bit */
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 */
u8 desired_speed; /* desired transfer rate set */
u8 dn; /* now wide spread use */
- u8 wcache; /* status of write cache */
u8 acoustic; /* acoustic management */
u8 media; /* disk, cdrom, tape, floppy, ... */
u8 ready_stat; /* min status value for drive ready */
@@ -439,7 +440,6 @@
u8 tune_req; /* requested drive tuning setting */
u8 io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
u8 bad_wstat; /* used for ignoring ATA_DF */
- u8 nowerr; /* used for ignoring ATA_DF */
u8 head; /* "real" number of heads */
u8 sect; /* "real" sectors per track */
u8 bios_head; /* BIOS/fdisk/LILO number of heads */
@@ -687,12 +687,29 @@
extern struct mutex ide_setting_mtx;
+int get_io_32bit(ide_drive_t *);
int set_io_32bit(ide_drive_t *, int);
+int get_ksettings(ide_drive_t *);
int set_ksettings(ide_drive_t *, int);
int set_pio_mode(ide_drive_t *, int);
+int get_unmaskirq(ide_drive_t *);
int set_unmaskirq(ide_drive_t *, int);
+int get_using_dma(ide_drive_t *);
int set_using_dma(ide_drive_t *, int);
+#define ide_devset_get(name, field) \
+int get_##name(ide_drive_t *drive) \
+{ \
+ return drive->field; \
+}
+
+#define ide_devset_set(name, field) \
+int set_##name(ide_drive_t *drive, int arg) \
+{ \
+ drive->field = arg; \
+ return 0; \
+}
+
/* ATAPI packet command flags */
enum {
/* set when an error is considered normal - no retry (ide-tape) */
@@ -757,30 +774,53 @@
* configurable drive settings
*/
-#define TYPE_INT 0
-#define TYPE_BYTE 1
-#define TYPE_SHORT 2
+#define S_READ (1 << 0)
+#define S_WRITE (1 << 1)
+#define S_RW (S_READ | S_WRITE)
+#define S_NOLOCK (1 << 2)
-#define SETTING_READ (1 << 0)
-#define SETTING_WRITE (1 << 1)
-#define SETTING_RW (SETTING_READ | SETTING_WRITE)
+struct ide_devset {
+ const char *name;
+ unsigned int flags;
+ int min, max;
+ int (*get)(ide_drive_t *);
+ int (*set)(ide_drive_t *, int);
+ int (*mulf)(ide_drive_t *);
+ int (*divf)(ide_drive_t *);
+};
-typedef int (ide_procset_t)(ide_drive_t *, int);
-typedef struct ide_settings_s {
- char *name;
- int rw;
- int data_type;
- int min;
- int max;
- int mul_factor;
- int div_factor;
- void *data;
- ide_procset_t *set;
- int auto_remove;
- struct ide_settings_s *next;
-} ide_settings_t;
+#define __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) { \
+ .name = __stringify(_name), \
+ .flags = _flags, \
+ .min = _min, \
+ .max = _max, \
+ .get = _get, \
+ .set = _set, \
+ .mulf = _mulf, \
+ .divf = _divf, \
+}
-int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
+#define __IDE_DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf) \
+static const struct ide_devset ide_devset_##_name = \
+ __DEVSET(_name, _flags, _min, _max, _get, _set, _mulf, _divf)
+
+#define IDE_DEVSET(_name, _flags, _min, _max, _get, _set) \
+__IDE_DEVSET(_name, _flags, _min, _max, _get, _set, NULL, NULL)
+
+#define ide_devset_rw_nolock(_name, _min, _max, _func) \
+IDE_DEVSET(_name, S_RW | S_NOLOCK, _min, _max, get_##_func, set_##_func)
+
+#define ide_devset_w_nolock(_name, _min, _max, _func) \
+IDE_DEVSET(_name, S_WRITE | S_NOLOCK, _min, _max, NULL, set_##_func)
+
+#define ide_devset_rw(_name, _min, _max, _field) \
+static ide_devset_get(_name, _field); \
+static ide_devset_set(_name, _field); \
+IDE_DEVSET(_name, S_RW, _min, _max, get_##_name, set_##_name)
+
+#define ide_devset_r(_name, _min, _max, _field) \
+ide_devset_get(_name, _field) \
+IDE_DEVSET(_name, S_READ, _min, _max, get_##_name, NULL)
/*
* /proc/ide interface
@@ -801,8 +841,6 @@
void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
-void ide_add_generic_settings(ide_drive_t *);
-
read_proc_t proc_ide_read_capacity;
read_proc_t proc_ide_read_geometry;
@@ -830,7 +868,6 @@
static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
-static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
#endif
@@ -887,6 +924,7 @@
void (*shutdown)(ide_drive_t *);
#ifdef CONFIG_IDE_PROC_FS
ide_proc_entry_t *proc;
+ const struct ide_devset **settings;
#endif
};