From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 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! --- arch/mips/pci/fixup-sni.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 arch/mips/pci/fixup-sni.c (limited to 'arch/mips/pci/fixup-sni.c') diff --git a/arch/mips/pci/fixup-sni.c b/arch/mips/pci/fixup-sni.c new file mode 100644 index 000000000000..c8ef01a017cc --- /dev/null +++ b/arch/mips/pci/fixup-sni.c @@ -0,0 +1,89 @@ +/* + * 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. + * + * SNI specific PCI support for RM200/RM300. + * + * Copyright (C) 1997 - 2000, 2003, 04 Ralf Baechle (ralf@linux-mips.org) + */ +#include +#include +#include + +#include +#include + +/* + * Shortcuts ... + */ +#define SCSI PCIMT_IRQ_SCSI +#define ETH PCIMT_IRQ_ETHERNET +#define INTA PCIMT_IRQ_INTA +#define INTB PCIMT_IRQ_INTB +#define INTC PCIMT_IRQ_INTC +#define INTD PCIMT_IRQ_INTD + +/* + * Device 0: PCI EISA Bridge (directly routed) + * Device 1: NCR53c810 SCSI (directly routed) + * Device 2: PCnet32 Ethernet (directly routed) + * Device 3: VGA (routed to INTB) + * Device 4: Unused + * Device 5: Slot 2 + * Device 6: Slot 3 + * Device 7: Slot 4 + * + * Documentation says the VGA is device 5 and device 3 is unused but that + * seem to be a documentation error. At least on my RM200C the Cirrus + * Logic CL-GD5434 VGA is device 3. + */ +static char irq_tab_rm200[8][5] __initdata = { + /* INTA INTB INTC INTD */ + { 0, 0, 0, 0, 0 }, /* EISA bridge */ + { SCSI, SCSI, SCSI, SCSI, SCSI }, /* SCSI */ + { ETH, ETH, ETH, ETH, ETH }, /* Ethernet */ + { INTB, INTB, INTB, INTB, INTB }, /* VGA */ + { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, INTB, INTC, INTD, INTA }, /* Slot 2 */ + { 0, INTC, INTD, INTA, INTB }, /* Slot 3 */ + { 0, INTD, INTA, INTB, INTC }, /* Slot 4 */ +}; + +/* + * In Revision D of the RM300 Device 2 has become a normal purpose Slot 1 + * + * The VGA card is optional for RM300 systems. + */ +static char irq_tab_rm300d[8][5] __initdata = { + /* INTA INTB INTC INTD */ + { 0, 0, 0, 0, 0 }, /* EISA bridge */ + { SCSI, SCSI, SCSI, SCSI, SCSI }, /* SCSI */ + { 0, INTC, INTD, INTA, INTB }, /* Slot 1 */ + { INTB, INTB, INTB, INTB, INTB }, /* VGA */ + { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, INTB, INTC, INTD, INTA }, /* Slot 2 */ + { 0, INTC, INTD, INTA, INTB }, /* Slot 3 */ + { 0, INTD, INTA, INTB, INTC }, /* Slot 4 */ +}; + +static inline int is_rm300_revd(void) +{ + unsigned char csmsr = *(volatile unsigned char *)PCIMT_CSMSR; + + return (csmsr & 0xa0) == 0x20; +} + +int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + if (is_rm300_revd()) + return irq_tab_rm300d[slot][pin]; + + return irq_tab_rm200[slot][pin]; +} + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} -- cgit v1.2.3