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Date: Sun, 17 Feb 2008 19:51:15 +0100
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To: linux-ide@...r.kernel.org
Cc: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH 2/5] ide: merge ide_match_hwif() and ide_find_port()
* 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@...il.com>
---
drivers/ide/ide-probe.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
drivers/ide/ide.c | 15 ---------------
drivers/ide/setup-pci.c | 48 +-----------------------------------------------
include/linux/ide.h | 8 +++++++-
4 files changed, 54 insertions(+), 63 deletions(-)
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1435,6 +1435,52 @@ static int ide_sysfs_register_port(ide_h
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;
Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -234,21 +234,6 @@ 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)
{
Index: b/drivers/ide/setup-pci.c
===================================================================
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -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
@@ -322,7 +277,6 @@ static ide_hwif_t *ide_hwif_configure(st
{
unsigned long ctl = 0, base = 0;
ide_hwif_t *hwif;
- u8 bootable = (d->host_flags & IDE_HFLAG_NON_BOOTABLE) ? 0 : 1;
u8 oldnoprobe = 0;
struct hw_regs_s hw;
@@ -346,7 +300,7 @@ static ide_hwif_t *ide_hwif_configure(st
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);
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -171,7 +171,6 @@ 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 *);
@@ -812,6 +811,13 @@ extern ide_hwif_t ide_hwifs[]; /* maste
#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);
--
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