148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2000, 2001 Keith M Wesolowski
|
|
* Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/types.h>
|
|
#include <asm/ip32/mace.h>
|
|
#include <asm/ip32/ip32_ints.h>
|
|
|
|
#undef DEBUG_MACE_PCI
|
|
|
|
/*
|
|
* Handle errors from the bridge. This includes master and target aborts,
|
|
* various command and address errors, and the interrupt test. This gets
|
|
* registered on the bridge error irq. It's conceivable that some of these
|
|
* conditions warrant a panic. Anybody care to say which ones?
|
|
*/
|
|
static irqreturn_t macepci_error(int irq, void *dev)
|
|
{
|
|
char s;
|
|
unsigned int flags = mace->pci.error;
|
|
unsigned int addr = mace->pci.error_addr;
|
|
|
|
if (flags & MACEPCI_ERROR_MEMORY_ADDR)
|
|
s = 'M';
|
|
else if (flags & MACEPCI_ERROR_CONFIG_ADDR)
|
|
s = 'C';
|
|
else
|
|
s = 'X';
|
|
|
|
if (flags & MACEPCI_ERROR_MASTER_ABORT) {
|
|
printk("MACEPCI: Master abort at 0x%08x (%c)\n", addr, s);
|
|
flags &= ~MACEPCI_ERROR_MASTER_ABORT;
|
|
}
|
|
if (flags & MACEPCI_ERROR_TARGET_ABORT) {
|
|
printk("MACEPCI: Target abort at 0x%08x (%c)\n", addr, s);
|
|
flags &= ~MACEPCI_ERROR_TARGET_ABORT;
|
|
}
|
|
if (flags & MACEPCI_ERROR_DATA_PARITY_ERR) {
|
|
printk("MACEPCI: Data parity error at 0x%08x (%c)\n", addr, s);
|
|
flags &= ~MACEPCI_ERROR_DATA_PARITY_ERR;
|
|
}
|
|
if (flags & MACEPCI_ERROR_RETRY_ERR) {
|
|
printk("MACEPCI: Retry error at 0x%08x (%c)\n", addr, s);
|
|
flags &= ~MACEPCI_ERROR_RETRY_ERR;
|
|
}
|
|
if (flags & MACEPCI_ERROR_ILLEGAL_CMD) {
|
|
printk("MACEPCI: Illegal command at 0x%08x (%c)\n", addr, s);
|
|
flags &= ~MACEPCI_ERROR_ILLEGAL_CMD;
|
|
}
|
|
if (flags & MACEPCI_ERROR_SYSTEM_ERR) {
|
|
printk("MACEPCI: System error at 0x%08x (%c)\n", addr, s);
|
|
flags &= ~MACEPCI_ERROR_SYSTEM_ERR;
|
|
}
|
|
if (flags & MACEPCI_ERROR_PARITY_ERR) {
|
|
printk("MACEPCI: Parity error at 0x%08x (%c)\n", addr, s);
|
|
flags &= ~MACEPCI_ERROR_PARITY_ERR;
|
|
}
|
|
if (flags & MACEPCI_ERROR_OVERRUN) {
|
|
printk("MACEPCI: Overrun error at 0x%08x (%c)\n", addr, s);
|
|
flags &= ~MACEPCI_ERROR_OVERRUN;
|
|
}
|
|
if (flags & MACEPCI_ERROR_SIG_TABORT) {
|
|
printk("MACEPCI: Signaled target abort (clearing)\n");
|
|
flags &= ~MACEPCI_ERROR_SIG_TABORT;
|
|
}
|
|
if (flags & MACEPCI_ERROR_INTERRUPT_TEST) {
|
|
printk("MACEPCI: Interrupt test triggered (clearing)\n");
|
|
flags &= ~MACEPCI_ERROR_INTERRUPT_TEST;
|
|
}
|
|
|
|
mace->pci.error = flags;
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
|
|
extern struct pci_ops mace_pci_ops;
|
|
#ifdef CONFIG_64BIT
|
|
static struct resource mace_pci_mem_resource = {
|
|
.name = "SGI O2 PCI MEM",
|
|
.start = MACEPCI_HI_MEMORY,
|
|
.end = 0x2FFFFFFFFUL,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
static struct resource mace_pci_io_resource = {
|
|
.name = "SGI O2 PCI IO",
|
|
.start = 0x00000000UL,
|
|
.end = 0xffffffffUL,
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
#define MACE_PCI_MEM_OFFSET 0x200000000
|
|
#else
|
|
static struct resource mace_pci_mem_resource = {
|
|
.name = "SGI O2 PCI MEM",
|
|
.start = MACEPCI_LOW_MEMORY,
|
|
.end = MACEPCI_LOW_MEMORY + 0x2000000 - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
static struct resource mace_pci_io_resource = {
|
|
.name = "SGI O2 PCI IO",
|
|
.start = 0x00000000,
|
|
.end = 0xFFFFFFFF,
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
#define MACE_PCI_MEM_OFFSET (MACEPCI_LOW_MEMORY - 0x80000000)
|
|
#endif
|
|
static struct pci_controller mace_pci_controller = {
|
|
.pci_ops = &mace_pci_ops,
|
|
.mem_resource = &mace_pci_mem_resource,
|
|
.io_resource = &mace_pci_io_resource,
|
|
.mem_offset = MACE_PCI_MEM_OFFSET,
|
|
.io_offset = 0,
|
|
.io_map_base = CKSEG1ADDR(MACEPCI_LOW_IO),
|
|
};
|
|
|
|
static int __init mace_init(void)
|
|
{
|
|
PCIBIOS_MIN_IO = 0x1000;
|
|
|
|
/* Clear any outstanding errors and enable interrupts */
|
|
mace->pci.error_addr = 0;
|
|
mace->pci.error = 0;
|
|
mace->pci.control = 0xff008500;
|
|
|
|
printk("MACE PCI rev %d\n", mace->pci.rev);
|
|
|
|
BUG_ON(request_irq(MACE_PCI_BRIDGE_IRQ, macepci_error, 0,
|
|
"MACE PCI error", NULL));
|
|
|
|
/* extend memory resources */
|
|
iomem_resource.end = mace_pci_mem_resource.end;
|
|
ioport_resource = mace_pci_io_resource;
|
|
|
|
register_pci_controller(&mace_pci_controller);
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(mace_init);
|