1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
205 lines
6.0 KiB
C
205 lines
6.0 KiB
C
/*
|
|
* arch/mips/vr41xx/nec-cmbvr4133/pci_fixup.c
|
|
*
|
|
* The NEC CMB-VR4133 Board specific PCI fixups.
|
|
*
|
|
* Author: Yoichi Yuasa <yyuasa@mvista.com, or source@mvista.com> and
|
|
* Alex Sapkov <asapkov@ru.mvista.com>
|
|
*
|
|
* 2003-2004 (c) MontaVista, Software, Inc. This file is licensed under
|
|
* the terms of the GNU General Public License version 2. This program
|
|
* is licensed "as is" without any warranty of any kind, whether express
|
|
* or implied.
|
|
*
|
|
* Modified for support in 2.6
|
|
* Author: Manish Lachwani (mlachwani@mvista.com)
|
|
*
|
|
*/
|
|
#include <linux/config.h>
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/vr41xx/cmbvr4133.h>
|
|
|
|
extern int vr4133_rockhopper;
|
|
extern void ali_m1535plus_init(struct pci_dev *dev);
|
|
extern void ali_m5229_init(struct pci_dev *dev);
|
|
|
|
/* Do platform specific device initialization at pci_enable_device() time */
|
|
int pcibios_plat_dev_init(struct pci_dev *dev)
|
|
{
|
|
/*
|
|
* We have to reset AMD PCnet adapter on Rockhopper since
|
|
* PMON leaves it enabled and generating interrupts. This leads
|
|
* to a lock if some PCI device driver later enables the IRQ line
|
|
* shared with PCnet and there is no AMD PCnet driver to catch its
|
|
* interrupts.
|
|
*/
|
|
#ifdef CONFIG_ROCKHOPPER
|
|
if (dev->vendor == PCI_VENDOR_ID_AMD &&
|
|
dev->device == PCI_DEVICE_ID_AMD_LANCE) {
|
|
inl(pci_resource_start(dev, 0) + 0x18);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* we have to open the bridges' windows down to 0 because otherwise
|
|
* we cannot access ISA south bridge I/O registers that get mapped from
|
|
* 0. for example, 8259 PIC would be unaccessible without that
|
|
*/
|
|
if(dev->vendor == PCI_VENDOR_ID_INTEL && dev->device == PCI_DEVICE_ID_INTEL_S21152BB) {
|
|
pci_write_config_byte(dev, PCI_IO_BASE, 0);
|
|
if(dev->bus->number == 0) {
|
|
pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 0);
|
|
} else {
|
|
pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 1);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* M1535 IRQ mapping
|
|
* Feel free to change this, although it shouldn't be needed
|
|
*/
|
|
#define M1535_IRQ_INTA 7
|
|
#define M1535_IRQ_INTB 9
|
|
#define M1535_IRQ_INTC 10
|
|
#define M1535_IRQ_INTD 11
|
|
|
|
#define M1535_IRQ_USB 9
|
|
#define M1535_IRQ_IDE 14
|
|
#define M1535_IRQ_IDE2 15
|
|
#define M1535_IRQ_PS2 12
|
|
#define M1535_IRQ_RTC 8
|
|
#define M1535_IRQ_FDC 6
|
|
#define M1535_IRQ_AUDIO 5
|
|
#define M1535_IRQ_COM1 4
|
|
#define M1535_IRQ_COM2 4
|
|
#define M1535_IRQ_IRDA 3
|
|
#define M1535_IRQ_KBD 1
|
|
#define M1535_IRQ_TMR 0
|
|
|
|
/* Rockhopper "slots" assignment; this is hard-coded ... */
|
|
#define ROCKHOPPER_M5451_SLOT 1
|
|
#define ROCKHOPPER_M1535_SLOT 2
|
|
#define ROCKHOPPER_M5229_SLOT 11
|
|
#define ROCKHOPPER_M5237_SLOT 15
|
|
#define ROCKHOPPER_PMU_SLOT 12
|
|
/* ... and hard-wired. */
|
|
#define ROCKHOPPER_PCI1_SLOT 3
|
|
#define ROCKHOPPER_PCI2_SLOT 4
|
|
#define ROCKHOPPER_PCI3_SLOT 5
|
|
#define ROCKHOPPER_PCI4_SLOT 6
|
|
#define ROCKHOPPER_PCNET_SLOT 1
|
|
|
|
#define M1535_IRQ_MASK(n) (1 << (n))
|
|
|
|
#define M1535_IRQ_EDGE (M1535_IRQ_MASK(M1535_IRQ_TMR) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_KBD) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_COM1) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_COM2) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_IRDA) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_RTC) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_FDC) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_PS2))
|
|
|
|
#define M1535_IRQ_LEVEL (M1535_IRQ_MASK(M1535_IRQ_IDE) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_USB) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_INTA) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_INTB) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_INTC) | \
|
|
M1535_IRQ_MASK(M1535_IRQ_INTD))
|
|
|
|
struct irq_map_entry {
|
|
u16 bus;
|
|
u8 slot;
|
|
u8 irq;
|
|
};
|
|
static struct irq_map_entry int_map[] = {
|
|
{1, ROCKHOPPER_M5451_SLOT, M1535_IRQ_AUDIO}, /* Audio controller */
|
|
{1, ROCKHOPPER_PCI1_SLOT, M1535_IRQ_INTD}, /* PCI slot #1 */
|
|
{1, ROCKHOPPER_PCI2_SLOT, M1535_IRQ_INTC}, /* PCI slot #2 */
|
|
{1, ROCKHOPPER_M5237_SLOT, M1535_IRQ_USB}, /* USB host controller */
|
|
{1, ROCKHOPPER_M5229_SLOT, IDE_PRIMARY_IRQ}, /* IDE controller */
|
|
{2, ROCKHOPPER_PCNET_SLOT, M1535_IRQ_INTD}, /* AMD Am79c973 on-board
|
|
ethernet */
|
|
{2, ROCKHOPPER_PCI3_SLOT, M1535_IRQ_INTB}, /* PCI slot #3 */
|
|
{2, ROCKHOPPER_PCI4_SLOT, M1535_IRQ_INTC} /* PCI slot #4 */
|
|
};
|
|
|
|
static int pci_intlines[] =
|
|
{ M1535_IRQ_INTA, M1535_IRQ_INTB, M1535_IRQ_INTC, M1535_IRQ_INTD };
|
|
|
|
/* Determine the Rockhopper IRQ line number for the PCI device */
|
|
int rockhopper_get_irq(struct pci_dev *dev, u8 pin, u8 slot)
|
|
{
|
|
struct pci_bus *bus;
|
|
int i;
|
|
|
|
bus = dev->bus;
|
|
if (bus == NULL)
|
|
return -1;
|
|
|
|
for (i = 0; i < sizeof (int_map) / sizeof (int_map[0]); i++) {
|
|
if (int_map[i].bus == bus->number && int_map[i].slot == slot) {
|
|
int line;
|
|
for (line = 0; line < 4; line++)
|
|
if (pci_intlines[line] == int_map[i].irq)
|
|
break;
|
|
if (line < 4)
|
|
return pci_intlines[(line + (pin - 1)) % 4];
|
|
else
|
|
return int_map[i].irq;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
#ifdef CONFIG_ROCKHOPPER
|
|
void i8259_init(void)
|
|
{
|
|
outb(0x11, 0x20); /* Master ICW1 */
|
|
outb(I8259_IRQ_BASE, 0x21); /* Master ICW2 */
|
|
outb(0x04, 0x21); /* Master ICW3 */
|
|
outb(0x01, 0x21); /* Master ICW4 */
|
|
outb(0xff, 0x21); /* Master IMW */
|
|
|
|
outb(0x11, 0xa0); /* Slave ICW1 */
|
|
outb(I8259_IRQ_BASE + 8, 0xa1); /* Slave ICW2 */
|
|
outb(0x02, 0xa1); /* Slave ICW3 */
|
|
outb(0x01, 0xa1); /* Slave ICW4 */
|
|
outb(0xff, 0xa1); /* Slave IMW */
|
|
|
|
outb(0x00, 0x4d0);
|
|
outb(0x02, 0x4d1); /* USB IRQ9 is level */
|
|
}
|
|
#endif
|
|
|
|
int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
extern int pci_probe_only;
|
|
pci_probe_only = 1;
|
|
|
|
#ifdef CONFIG_ROCKHOPPER
|
|
if( dev->bus->number == 1 && vr4133_rockhopper ) {
|
|
if(slot == ROCKHOPPER_PCI1_SLOT || slot == ROCKHOPPER_PCI2_SLOT)
|
|
dev->irq = CMBVR41XX_INTA_IRQ;
|
|
else
|
|
dev->irq = rockhopper_get_irq(dev, pin, slot);
|
|
} else
|
|
dev->irq = CMBVR41XX_INTA_IRQ;
|
|
#else
|
|
dev->irq = CMBVR41XX_INTA_IRQ;
|
|
#endif
|
|
|
|
return dev->irq;
|
|
}
|
|
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, ali_m1535plus_init);
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, ali_m5229_init);
|
|
|
|
|