mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-12 15:24:00 +08:00
da095587e6
This reverts commit b2ae75052a.
The inverse logic is intentional, and this change even breaks
booting on some systems.
Signed-off-by: David S. Miller <davem@davemloft.net>
150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/*
|
|
* generic/default IDE host driver
|
|
*
|
|
* Copyright (C) 2004, 2008-2009 Bartlomiej Zolnierkiewicz
|
|
* This code was split off from ide.c. See it for original copyrights.
|
|
*
|
|
* May be copied or modified under the terms of the GNU General Public License.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/ide.h>
|
|
#include <linux/pci_ids.h>
|
|
|
|
/* FIXME: convert arm and m32r to use ide_platform host driver */
|
|
#ifdef CONFIG_ARM
|
|
#include <asm/irq.h>
|
|
#endif
|
|
#ifdef CONFIG_M32R
|
|
#include <asm/m32r.h>
|
|
#endif
|
|
|
|
#define DRV_NAME "ide_generic"
|
|
|
|
static int probe_mask;
|
|
module_param(probe_mask, int, 0);
|
|
MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
|
|
|
|
static const struct ide_port_info ide_generic_port_info = {
|
|
.host_flags = IDE_HFLAG_NO_DMA,
|
|
.chipset = ide_generic,
|
|
};
|
|
|
|
#ifdef CONFIG_ARM
|
|
static const u16 legacy_bases[] = { 0x1f0 };
|
|
static const int legacy_irqs[] = { IRQ_HARDDISK };
|
|
#elif defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) || \
|
|
defined(CONFIG_PLAT_OPSPUT)
|
|
static const u16 legacy_bases[] = { 0x1f0 };
|
|
static const int legacy_irqs[] = { PLD_IRQ_CFIREQ };
|
|
#elif defined(CONFIG_PLAT_MAPPI3)
|
|
static const u16 legacy_bases[] = { 0x1f0, 0x170 };
|
|
static const int legacy_irqs[] = { PLD_IRQ_CFIREQ, PLD_IRQ_IDEIREQ };
|
|
#elif defined(CONFIG_ALPHA)
|
|
static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168 };
|
|
static const int legacy_irqs[] = { 14, 15, 11, 10 };
|
|
#else
|
|
static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
|
|
static const int legacy_irqs[] = { 14, 15, 11, 10, 8, 12 };
|
|
#endif
|
|
|
|
static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
|
|
{
|
|
#ifdef CONFIG_PCI
|
|
struct pci_dev *p = NULL;
|
|
u16 val;
|
|
|
|
for_each_pci_dev(p) {
|
|
if (pci_resource_start(p, 0) == 0x1f0)
|
|
*primary = 1;
|
|
if (pci_resource_start(p, 2) == 0x170)
|
|
*secondary = 1;
|
|
|
|
/* Cyrix CS55{1,2}0 pre SFF MWDMA ATA on the bridge */
|
|
if (p->vendor == PCI_VENDOR_ID_CYRIX &&
|
|
(p->device == PCI_DEVICE_ID_CYRIX_5510 ||
|
|
p->device == PCI_DEVICE_ID_CYRIX_5520))
|
|
*primary = *secondary = 1;
|
|
|
|
/* Intel MPIIX - PIO ATA on non PCI side of bridge */
|
|
if (p->vendor == PCI_VENDOR_ID_INTEL &&
|
|
p->device == PCI_DEVICE_ID_INTEL_82371MX) {
|
|
pci_read_config_word(p, 0x6C, &val);
|
|
if (val & 0x8000) {
|
|
/* ATA port enabled */
|
|
if (val & 0x4000)
|
|
*secondary = 1;
|
|
else
|
|
*primary = 1;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static int __init ide_generic_init(void)
|
|
{
|
|
struct ide_hw hw, *hws[] = { &hw };
|
|
unsigned long io_addr;
|
|
int i, rc = 0, primary = 0, secondary = 0;
|
|
|
|
ide_generic_check_pci_legacy_iobases(&primary, &secondary);
|
|
|
|
if (!probe_mask) {
|
|
printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" "
|
|
"module parameter for probing all legacy ISA IDE ports\n");
|
|
|
|
if (primary == 0)
|
|
probe_mask |= 0x1;
|
|
|
|
if (secondary == 0)
|
|
probe_mask |= 0x2;
|
|
} else
|
|
printk(KERN_INFO DRV_NAME ": enforcing probing of I/O ports "
|
|
"upon user request\n");
|
|
|
|
for (i = 0; i < ARRAY_SIZE(legacy_bases); i++) {
|
|
io_addr = legacy_bases[i];
|
|
|
|
if ((probe_mask & (1 << i)) && io_addr) {
|
|
if (!request_region(io_addr, 8, DRV_NAME)) {
|
|
printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
|
|
"not free.\n",
|
|
DRV_NAME, io_addr, io_addr + 7);
|
|
rc = -EBUSY;
|
|
continue;
|
|
}
|
|
|
|
if (!request_region(io_addr + 0x206, 1, DRV_NAME)) {
|
|
printk(KERN_ERR "%s: I/O resource 0x%lX "
|
|
"not free.\n",
|
|
DRV_NAME, io_addr + 0x206);
|
|
release_region(io_addr, 8);
|
|
rc = -EBUSY;
|
|
continue;
|
|
}
|
|
|
|
memset(&hw, 0, sizeof(hw));
|
|
ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
|
|
#ifdef CONFIG_IA64
|
|
hw.irq = isa_irq_to_vector(legacy_irqs[i]);
|
|
#else
|
|
hw.irq = legacy_irqs[i];
|
|
#endif
|
|
rc = ide_host_add(&ide_generic_port_info, hws, 1, NULL);
|
|
if (rc) {
|
|
release_region(io_addr + 0x206, 1);
|
|
release_region(io_addr, 8);
|
|
}
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
module_init(ide_generic_init);
|
|
|
|
MODULE_LICENSE("GPL");
|