2 * (C) Copyright 2008,2009
3 * Graeme Russ, <graeme.russ@gmail.com>
6 * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 #include <asm/arch/pci.h>
32 static void pci_enet_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
34 /* a configurable lists of IRQs to steal when we need one */
35 static int irq_list[] = {
36 CONFIG_SYS_FIRST_PCI_IRQ,
37 CONFIG_SYS_SECOND_PCI_IRQ,
38 CONFIG_SYS_THIRD_PCI_IRQ,
39 CONFIG_SYS_FORTH_PCI_IRQ
41 static int next_irq_index;
46 pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &tmp_pin);
49 pin -= 1; /* PCI config space use 1-based numbering */
51 return; /* device use no irq */
53 /* map device number + pin to a pin on the sc520 */
54 switch (PCI_DEV(dev)) {
55 case 12: /* First Ethernet Chip */
56 pin += SC520_PCI_INTA;
59 case 13: /* Second Ethernet Chip */
60 pin += SC520_PCI_INTB;
67 pin &= 3; /* wrap around */
69 if (sc520_pci_ints[pin] == -1) {
70 /* re-route one interrupt for us */
71 if (next_irq_index > 3)
74 if (pci_sc520_set_irq(pin, irq_list[next_irq_index]))
80 if (-1 != sc520_pci_ints[pin])
81 pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE,
84 printf("fixup_irq: device %d pin %c irq %d\n",
85 PCI_DEV(dev), 'A' + pin, sc520_pci_ints[pin]);
88 static struct pci_controller enet_hose = {
89 fixup_irq: pci_enet_fixup_irq,
92 void pci_init_board(void)
94 pci_sc520_init(&enet_hose);
97 int pci_set_regions(struct pci_controller *hose)
99 /* System memory space */
100 pci_set_region(hose->regions + 0,
101 SC520_PCI_MEMORY_BUS,
102 SC520_PCI_MEMORY_PHYS,
103 SC520_PCI_MEMORY_SIZE,
104 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
106 /* ISA/PCI memory space */
107 pci_set_region(hose->regions + 1,
114 pci_set_region(hose->regions + 2,
120 /* ISA/PCI I/O space */
121 pci_set_region(hose->regions + 3,