mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 13:56:30 +00:00
128 lines
3.1 KiB
C
128 lines
3.1 KiB
C
/*
|
|
* (C) Copyright 2008,2009
|
|
* Graeme Russ, <graeme.russ@gmail.com>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <pci.h>
|
|
#include <asm/pci.h>
|
|
#include <asm/arch/pci.h>
|
|
|
|
static void pci_enet_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
|
|
{
|
|
/* a configurable lists of IRQs to steal when we need one */
|
|
static int irq_list[] = {
|
|
CONFIG_SYS_FIRST_PCI_IRQ,
|
|
CONFIG_SYS_SECOND_PCI_IRQ,
|
|
CONFIG_SYS_THIRD_PCI_IRQ,
|
|
CONFIG_SYS_FORTH_PCI_IRQ
|
|
};
|
|
static int next_irq_index;
|
|
|
|
uchar tmp_pin;
|
|
int pin;
|
|
|
|
pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &tmp_pin);
|
|
pin = tmp_pin;
|
|
|
|
pin -= 1; /* PCI config space use 1-based numbering */
|
|
if (pin == -1)
|
|
return; /* device use no irq */
|
|
|
|
/* map device number + pin to a pin on the sc520 */
|
|
switch (PCI_DEV(dev)) {
|
|
case 12: /* First Ethernet Chip */
|
|
pin += SC520_PCI_INTA;
|
|
break;
|
|
|
|
case 13: /* Second Ethernet Chip */
|
|
pin += SC520_PCI_INTB;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
pin &= 3; /* wrap around */
|
|
|
|
if (sc520_pci_ints[pin] == -1) {
|
|
/* re-route one interrupt for us */
|
|
if (next_irq_index > 3)
|
|
return;
|
|
|
|
if (pci_sc520_set_irq(pin, irq_list[next_irq_index]))
|
|
return;
|
|
|
|
next_irq_index++;
|
|
}
|
|
|
|
if (-1 != sc520_pci_ints[pin])
|
|
pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE,
|
|
sc520_pci_ints[pin]);
|
|
|
|
printf("fixup_irq: device %d pin %c irq %d\n",
|
|
PCI_DEV(dev), 'A' + pin, sc520_pci_ints[pin]);
|
|
}
|
|
|
|
static struct pci_controller enet_hose = {
|
|
fixup_irq: pci_enet_fixup_irq,
|
|
};
|
|
|
|
void pci_init_board(void)
|
|
{
|
|
pci_sc520_init(&enet_hose);
|
|
}
|
|
|
|
int pci_set_regions(struct pci_controller *hose)
|
|
{
|
|
/* System memory space */
|
|
pci_set_region(hose->regions + 0,
|
|
SC520_PCI_MEMORY_BUS,
|
|
SC520_PCI_MEMORY_PHYS,
|
|
SC520_PCI_MEMORY_SIZE,
|
|
PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
|
|
|
|
/* ISA/PCI memory space */
|
|
pci_set_region(hose->regions + 1,
|
|
SC520_ISA_MEM_BUS,
|
|
SC520_ISA_MEM_PHYS,
|
|
SC520_ISA_MEM_SIZE,
|
|
PCI_REGION_MEM);
|
|
|
|
/* PCI I/O space */
|
|
pci_set_region(hose->regions + 2,
|
|
SC520_PCI_IO_BUS,
|
|
SC520_PCI_IO_PHYS,
|
|
SC520_PCI_IO_SIZE,
|
|
PCI_REGION_IO);
|
|
|
|
/* ISA/PCI I/O space */
|
|
pci_set_region(hose->regions + 3,
|
|
SC520_ISA_IO_BUS,
|
|
SC520_ISA_IO_PHYS,
|
|
SC520_ISA_IO_SIZE,
|
|
PCI_REGION_IO);
|
|
|
|
return 4;
|
|
}
|