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Subject[PATCH 09/11] ide: move legacy ISA/VLB ports handling to ide-legacy.c
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: move legacy ISA/VLB ports handling to ide-legacy.c

* Move legacy ISA/VLB ports handling from ide-probe.c to ide-legacy.c.

* Add CONFIG_IDE_LEGACY config option to be selected by host drivers
needing ide-legacy.c.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/Kconfig | 5 ++++
drivers/ide/Makefile | 1
drivers/ide/ide-legacy.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++
drivers/ide/ide-probe.c | 56 ---------------------------------------------
4 files changed, 64 insertions(+), 56 deletions(-)

Index: b/drivers/ide/Kconfig
===================================================================
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -864,6 +864,7 @@ config BLK_DEV_4DRIVES
config BLK_DEV_ALI14XX
tristate "ALI M14xx support"
select IDE_TIMINGS
+ select IDE_LEGACY
help
This driver is enabled at runtime using the "ali14xx.probe" kernel
boot parameter. It enables support for the secondary IDE interface
@@ -874,6 +875,7 @@ config BLK_DEV_ALI14XX

config BLK_DEV_DTC2278
tristate "DTC-2278 support"
+ select IDE_LEGACY
help
This driver is enabled at runtime using the "dtc2278.probe" kernel
boot parameter. It enables support for the secondary IDE interface
@@ -884,6 +886,7 @@ config BLK_DEV_DTC2278
config BLK_DEV_HT6560B
tristate "Holtek HT6560B support"
select IDE_TIMINGS
+ select IDE_LEGACY
help
This driver is enabled at runtime using the "ht6560b.probe" kernel
boot parameter. It enables support for the secondary IDE interface
@@ -894,6 +897,7 @@ config BLK_DEV_HT6560B
config BLK_DEV_QD65XX
tristate "QDI QD65xx support"
select IDE_TIMINGS
+ select IDE_LEGACY
help
This driver is enabled at runtime using the "qd65xx.probe" kernel
boot parameter. It permits faster I/O speeds to be set. See the
@@ -902,6 +906,7 @@ config BLK_DEV_QD65XX

config BLK_DEV_UMC8672
tristate "UMC-8672 support"
+ select IDE_LEGACY
help
This driver is enabled at runtime using the "umc8672.probe" kernel
boot parameter. It enables support for the secondary IDE interface
Index: b/drivers/ide/Makefile
===================================================================
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -15,6 +15,7 @@ ide-core-$(CONFIG_BLK_DEV_IDEDMA) += ide
ide-core-$(CONFIG_BLK_DEV_IDEDMA_SFF) += ide-dma-sff.o
ide-core-$(CONFIG_IDE_PROC_FS) += ide-proc.o
ide-core-$(CONFIG_BLK_DEV_IDEACPI) += ide-acpi.o
+ide-core-$(CONFIG_IDE_LEGACY) += ide-legacy.o

obj-$(CONFIG_IDE) += ide-core.o

Index: b/drivers/ide/ide-legacy.c
===================================================================
--- /dev/null
+++ b/drivers/ide/ide-legacy.c
@@ -0,0 +1,58 @@
+#include <linux/kernel.h>
+#include <linux/ide.h>
+
+static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw,
+ u8 port_no, const struct ide_port_info *d,
+ unsigned long config)
+{
+ unsigned long base, ctl;
+ int irq;
+
+ if (port_no == 0) {
+ base = 0x1f0;
+ ctl = 0x3f6;
+ irq = 14;
+ } else {
+ base = 0x170;
+ ctl = 0x376;
+ irq = 15;
+ }
+
+ if (!request_region(base, 8, d->name)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
+ d->name, base, base + 7);
+ return;
+ }
+
+ if (!request_region(ctl, 1, d->name)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
+ d->name, ctl);
+ release_region(base, 8);
+ return;
+ }
+
+ ide_std_init_ports(hw, base, ctl);
+ hw->irq = irq;
+ hw->chipset = d->chipset;
+ hw->config = config;
+
+ hws[port_no] = hw;
+}
+
+int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
+{
+ hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
+
+ memset(&hw, 0, sizeof(hw));
+
+ if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
+ ide_legacy_init_one(hws, &hw[0], 0, d, config);
+ ide_legacy_init_one(hws, &hw[1], 1, d, config);
+
+ if (hws[0] == NULL && hws[1] == NULL &&
+ (d->host_flags & IDE_HFLAG_SINGLE))
+ return -ENOENT;
+
+ return ide_host_add(d, hws, NULL);
+}
+EXPORT_SYMBOL_GPL(ide_legacy_device_add);
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1754,59 +1754,3 @@ void ide_port_scan(ide_hwif_t *hwif)
ide_proc_port_register_devices(hwif);
}
EXPORT_SYMBOL_GPL(ide_port_scan);
-
-static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw,
- u8 port_no, const struct ide_port_info *d,
- unsigned long config)
-{
- unsigned long base, ctl;
- int irq;
-
- if (port_no == 0) {
- base = 0x1f0;
- ctl = 0x3f6;
- irq = 14;
- } else {
- base = 0x170;
- ctl = 0x376;
- irq = 15;
- }
-
- if (!request_region(base, 8, d->name)) {
- printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
- d->name, base, base + 7);
- return;
- }
-
- if (!request_region(ctl, 1, d->name)) {
- printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
- d->name, ctl);
- release_region(base, 8);
- return;
- }
-
- ide_std_init_ports(hw, base, ctl);
- hw->irq = irq;
- hw->chipset = d->chipset;
- hw->config = config;
-
- hws[port_no] = hw;
-}
-
-int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
-{
- hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
-
- memset(&hw, 0, sizeof(hw));
-
- if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
- ide_legacy_init_one(hws, &hw[0], 0, d, config);
- ide_legacy_init_one(hws, &hw[1], 1, d, config);
-
- if (hws[0] == NULL && hws[1] == NULL &&
- (d->host_flags & IDE_HFLAG_SINGLE))
- return -ENOENT;
-
- return ide_host_add(d, hws, NULL);
-}
-EXPORT_SYMBOL_GPL(ide_legacy_device_add);

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