diff options
Diffstat (limited to 'target/linux/adm5120/files/arch/mips/pci/fixup-adm5120.c')
| -rw-r--r-- | target/linux/adm5120/files/arch/mips/pci/fixup-adm5120.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/target/linux/adm5120/files/arch/mips/pci/fixup-adm5120.c b/target/linux/adm5120/files/arch/mips/pci/fixup-adm5120.c new file mode 100644 index 0000000000..59acf75c18 --- /dev/null +++ b/target/linux/adm5120/files/arch/mips/pci/fixup-adm5120.c @@ -0,0 +1,175 @@ +/* + * $Id$ + * + * ADM5120 specific PCI fixups + * + * Copyright (C) ADMtek Incorporated. + * Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org) + * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org> + * Copyright (C) 2007 OpenWrt.org + * + * 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., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/pci_ids.h> +#include <linux/pci_regs.h> + +#include <asm/delay.h> +#include <asm/bootinfo.h> + +#include <asm/mach-adm5120/adm5120_info.h> +#include <asm/mach-adm5120/adm5120_defs.h> +#include <asm/mach-adm5120/adm5120_irq.h> + +struct adm5120_pci_irq { + u8 slot; + u8 func; + u8 pin; + unsigned irq; +}; + +#define PCIIRQ(s,f,p,i) { \ + .slot = (s), \ + .func = (f), \ + .pin = (p), \ + .irq = (i) \ + } + +static struct adm5120_pci_irq default_pci_irqs[] __initdata = { + PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0), +}; + +static struct adm5120_pci_irq rb1xx_pci_irqs[] __initdata = { + PCIIRQ(1, 0, 1, ADM5120_IRQ_PCI0), + PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI1), + PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI2) +}; + +static struct adm5120_pci_irq cas771_pci_irqs[] __initdata = { + PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0), + PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI1), + PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2) +}; + +static struct adm5120_pci_irq np28g_pci_irqs[] __initdata = { + PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0), + PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI0), + PCIIRQ(3, 1, 2, ADM5120_IRQ_PCI1), + PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2) +}; + +#define GETMAP(n) do { \ + nr_irqs = ARRAY_SIZE(n ## _pci_irqs); \ + p = n ## _pci_irqs; \ + } while (0) + +int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + struct adm5120_pci_irq *p; + int nr_irqs; + int i; + int irq; + + irq = -1; + if (slot < 1 || slot > 3) { + printk(KERN_ALERT "PCI: slot number %u is not supported\n", + slot); + goto out; + } + + GETMAP(default); + + switch (mips_machtype) { + case MACH_ADM5120_RB_111: + case MACH_ADM5120_RB_112: + case MACH_ADM5120_RB_133: + case MACH_ADM5120_RB_133C: + case MACH_ADM5120_RB_153: + GETMAP(rb1xx); + break; + case MACH_ADM5120_NP28G: + GETMAP(np28g); + break; + case MACH_ADM5120_P335: + case MACH_ADM5120_P334WT: + /* using default mapping */ + break; + case MACH_ADM5120_CAS771: + GETMAP(cas771); + break; + + case MACH_ADM5120_NP27G: + case MACH_ADM5120_NP28GHS: + case MACH_ADM5120_WP54AG: + case MACH_ADM5120_WP54G: + case MACH_ADM5120_WP54G_WRT: + case MACH_ADM5120_WPP54AG: + case MACH_ADM5120_WPP54G: + default: + printk(KERN_ALERT "PCI: irq map is unknown, using defaults.\n"); + break; + } + + for (i=0; i<nr_irqs; i++, p++) { + if ((p->slot == slot) && (PCI_FUNC(dev->devfn) == p->func) && + (p->pin == pin)) { + irq = p->irq; + break; + } + } + + if (irq < 0) { + printk(KERN_ALERT "PCI: no irq found for %s pin:%u\n", + pci_name(dev), pin); + } else { + printk(KERN_INFO "PCI: mapping irq for %s pin:%u, irq:%d\n", + pci_name(dev), pin, irq); + } + +out: + return irq; +} + +static void adm5120_pci_fixup(struct pci_dev *dev) +{ + if (dev->devfn != 0) + return; + + /* setup COMMAND register */ + pci_write_config_word(dev, PCI_COMMAND, + (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER)); + + /* setup CACHE_LINE_SIZE register */ + pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4); + + /* setting up BARS */ + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0); +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADMTEK, PCI_DEVICE_ID_ADMTEK_ADM5120, + adm5120_pci_fixup); + +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} + |