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ide: merge ide_match_hwif() and ide_find_port()

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* Change ide_match_hwif() argument from 'u8 bootable' to
  'struct ide_port_info *d'.

* Move ide_match_hwif() to ide-probe.c from setup-pci.c and rename
  it to ide_find_port_slot().  Update some comments while at it.

* ide_find_port() can be now just a wrapper for ide_find_port_slot().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-04-26 17:36:36 +02:00
parent 078fdf789c
commit fe80b937c9
4 changed files with 54 additions and 63 deletions
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46
drivers/ide/ide-probe.c
View File

@ -1444,6 +1444,52 @@ static int ide_sysfs_register_port(ide_hwif_t *hwif)
return rc;
}
/**
* ide_find_port_slot - find free ide_hwifs[] slot
* @d: IDE port info
*
* Return the new hwif. If we are out of free slots return NULL.
*/
ide_hwif_t *ide_find_port_slot(const struct ide_port_info *d)
{
ide_hwif_t *hwif;
int i;
u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1;
/*
* Claim an unassigned slot.
*
* Give preference to claiming other slots before claiming ide0/ide1,
* just in case there's another interface yet-to-be-scanned
* which uses ports 0x1f0/0x170 (the ide0/ide1 defaults).
*
* Unless there is a bootable card that does not use the standard
* ports 0x1f0/0x170 (the ide0/ide1 defaults).
*/
if (bootable) {
for (i = 0; i < MAX_HWIFS; i++) {
hwif = &ide_hwifs[i];
if (hwif->chipset == ide_unknown)
return hwif;
}
} else {
for (i = 2; i < MAX_HWIFS; i++) {
hwif = &ide_hwifs[i];
if (hwif->chipset == ide_unknown)
return hwif;
}
for (i = 0; i < 2 && i < MAX_HWIFS; i++) {
hwif = &ide_hwifs[i];
if (hwif->chipset == ide_unknown)
return hwif;
}
}
return NULL;
}
EXPORT_SYMBOL_GPL(ide_find_port_slot);
int ide_device_add_all(u8 *idx, const struct ide_port_info *d)
{
ide_hwif_t *hwif, *mate = NULL;

15
drivers/ide/ide.c
View File

@ -232,21 +232,6 @@ static int ide_system_bus_speed(void)
return pci_dev_present(pci_default) ? 33 : 50;
}
ide_hwif_t *ide_find_port(void)
{
ide_hwif_t *hwif;
int i;
for (i = 0; i < MAX_HWIFS; i++) {
hwif = &ide_hwifs[i];
if (hwif->chipset == ide_unknown)
return hwif;
}
return NULL;
}
EXPORT_SYMBOL_GPL(ide_find_port);
static struct resource* hwif_request_region(ide_hwif_t *hwif,
unsigned long addr, int num)
{

48
drivers/ide/setup-pci.c
View File

@ -20,51 +20,6 @@
#include <asm/io.h>
#include <asm/irq.h>
/**
* ide_match_hwif - find free ide_hwifs[] slot
* @bootable: bootable flag
*
* Return the new hwif. If we are out of free slots return NULL.
*/
static ide_hwif_t *ide_match_hwif(u8 bootable)
{
ide_hwif_t *hwif;
int h;
/*
* Claim an unassigned slot.
*
* Give preference to claiming other slots before claiming ide0/ide1,
* just in case there's another interface yet-to-be-scanned
* which uses ports 1f0/170 (the ide0/ide1 defaults).
*
* Unless there is a bootable card that does not use the standard
* ports 1f0/170 (the ide0/ide1 defaults). The (bootable) flag.
*/
if (bootable) {
for (h = 0; h < MAX_HWIFS; ++h) {
hwif = &ide_hwifs[h];
if (hwif->chipset == ide_unknown)
return hwif; /* pick an unused entry */
}
} else {
for (h = 2; h < MAX_HWIFS; ++h) {
hwif = ide_hwifs + h;
if (hwif->chipset == ide_unknown)
return hwif; /* pick an unused entry */
}
}
for (h = 0; h < 2 && h < MAX_HWIFS; ++h) {
hwif = ide_hwifs + h;
if (hwif->chipset == ide_unknown)
return hwif; /* pick an unused entry */
}
return NULL;
}
/**
* ide_setup_pci_baseregs - place a PCI IDE controller native
* @dev: PCI device of interface to switch native
@ -320,7 +275,6 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
{
unsigned long ctl = 0, base = 0;
ide_hwif_t *hwif;
u8 bootable = (d->host_flags & IDE_HFLAG_NON_BOOTABLE) ? 0 : 1;
struct hw_regs_s hw;
if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {
@ -346,7 +300,7 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
base = port ? 0x170 : 0x1f0;
}
hwif = ide_match_hwif(bootable);
hwif = ide_find_port_slot(d);
if (hwif == NULL) {
printk(KERN_ERR "%s: too many IDE interfaces, no room in "
"table\n", d->name);

8
include/linux/ide.h
View File

@ -170,7 +170,6 @@ typedef struct hw_regs_s {
struct device *dev;
} hw_regs_t;
struct hwif_s *ide_find_port(void);
void ide_init_port_data(struct hwif_s *, unsigned int);
void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
@ -809,6 +808,13 @@ extern ide_hwif_t ide_hwifs[]; /* master data repository */
#endif
extern int noautodma;
ide_hwif_t *ide_find_port_slot(const struct ide_port_info *);
static inline ide_hwif_t *ide_find_port(void)
{
return ide_find_port_slot(NULL);
}
extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
int uptodate, int nr_sectors);