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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-26 17:36:36 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-26 17:36:36 +0200
commitfe80b937c9917887e4fbfaaf52f498b5ac3a6999 (patch)
tree4943f2d8f7157437f100bfcdf8aed88f6dcffef1 /drivers/ide/ide-probe.c
parent078fdf789c4ef13dcb7b5651ff330e325d764c0e (diff)
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@gmail.com>
Diffstat (limited to 'drivers/ide/ide-probe.c')
-rw-r--r--drivers/ide/ide-probe.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 6a196c27b0a..f81793f3f24 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -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;