patch-2.4.19 linux-2.4.19/arch/mips/ddb5xxx/common/pci.c

• Lines: 180
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.18/arch/mips/ddb5xxx/common/pci.c
• Orig date: Sun Sep 9 10:43:01 2001

diff -urN linux-2.4.18/arch/mips/ddb5xxx/common/pci.c linux-2.4.19/arch/mips/ddb5xxx/common/pci.c
@@ -1,179 +0,0 @@
-/***********************************************************************
- * Copyright 2001 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- * arch/mips/ddb5xxx/common/pci.c
- *     Common PCI routines for DDB5xxx - as a matter of fact, meant for all 
- *	MIPS machines.
- *
- * 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 file contains common PCI routines meant to be shared for
- * all MIPS machines.
- *
- * Strategies:
- *
- * . We rely on pci_auto.c file to assign PCI resources (MEM and IO)
- *   TODO: this shold be optional for some machines where they do have
- *   a real "pcibios" that does resource assignment.
- *
- * . We then use pci_scan_bus() to "discover" all the resources for
- *   later use by Linux.
- *
- * . We finally reply on a board supplied function, pcibios_fixup_irq(), to 
- *   to assign the interrupts.  We may use setup-irq.c under drivers/pci
- *   later.
- *
- * . Specifically, we will *NOT* use pci_assign_unassigned_resources(),
- *   because we assume all PCI devices should have the resources correctly
- *   assigned and recorded.
- *
- * Limitations:
- *
- * . We "collapse" all IO and MEM spaces in sub-buses under a top-level bus 
- *   into a contiguous range.  
- * 
- * . In the case of Memory space, the rnage is 1:1 mapping with CPU physical
- *   address space.
- *
- * . In the case of IO space, it starts from 0, and the beginning address
- *   is mapped to KSEG0ADDR(mips_io_port) in the CPU physical address.
- *
- * . These are the current MIPS limitations (by ioremap, etc).  In the
- *   future, we may remove them.
- *
- * Credits:
- *	Most of the code are derived from the pci routines from PPC and Alpha,
- *	which were mostly writtne by
- *		Cort Dougan, cort@fsmlabs.com
- *		Matt Porter, mporter@mvista.com
- *		Dave Rusling david.rusling@reo.mts.dec.com
- *		David Mosberger davidm@cs.arizona.edu
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-
-#include <asm/ddb5xxx/pci.h>
-#include <asm/ddb5xxx/debug.h>
-
-
-struct pci_fixup pcibios_fixups[] = { {0} };
-
-
-extern int pciauto_assign_resources(int busno, struct pci_channel * hose);
-void __init pcibios_init(void)
-{
-	struct pci_channel *p;
-	struct pci_bus *bus;
-	int busno;
-
-	/* assign resources */
-	busno=0;
-	for (p= mips_pci_channels; p->pci_ops != NULL; p++) {
-		busno = pciauto_assign_resources(busno, p) + 1;
-	}
-
-	/* scan the buses */
-	busno = 0;
-	for (p= mips_pci_channels; p->pci_ops != NULL; p++) {
-		bus = pci_scan_bus(busno, p->pci_ops, p);
-		busno = bus->subordinate+1;
-	}
-
-	/* fixup irqs (board specific routines) */
-	pcibios_fixup_irqs();
-
-	/* 
-	 * should we do a fixup of ioport_resource and iomem_resource
-	 * based on mips_pci_channels?  
-	 * Let us wait and see if this is a common need and whether there
-	 * are exceptions.  Until then, each board should adjust them
-	 * perhaps in their setup() function.
-	 */
-}
-
-int pcibios_enable_device(struct pci_dev *dev)
-{
-	/* pciauto_assign_resources() will enable all devices found */
-	return 0;
-}
-
-unsigned long __init
-pci_bridge_check_io(struct pci_dev *bridge)
-{
-        u16 io;
-
-        pci_read_config_word(bridge, PCI_IO_BASE, &io);
-        if (!io) {
-                pci_write_config_word(bridge, PCI_IO_BASE, 0xf0f0);
-                pci_read_config_word(bridge, PCI_IO_BASE, &io);
-                pci_write_config_word(bridge, PCI_IO_BASE, 0x0);
-        }
-        if (io)
-                return IORESOURCE_IO;
-        printk(KERN_WARNING "PCI: bridge %s does not support I/O forwarding!\n",
-                                bridge->name);
-        return 0;
-}
-
-void __init pcibios_fixup_bus(struct pci_bus *bus)
-{
-        /* Propogate hose info into the subordinate devices.  */
-
-        struct pci_channel *hose = bus->sysdata;
-        struct pci_dev *dev = bus->self;
-
-        if (!dev) {
-                /* Root bus */
-                bus->resource[0] = hose->io_resource;
-                bus->resource[1] = hose->mem_resource;
-        } else {
-                /* This is a bridge. Do not care how it's initialized,
-                   just link its resources to the bus ones */
-                int i;
-
-                for(i=0; i<3; i++) {
-                        bus->resource[i] =
-                                &dev->resource[PCI_BRIDGE_RESOURCES+i];
-                        bus->resource[i]->name = bus->name;
-                }
-                bus->resource[0]->flags |= pci_bridge_check_io(dev);
-                bus->resource[1]->flags |= IORESOURCE_MEM;
-                /* For now, propogate hose limits to the bus;
-                   we'll adjust them later. */
-                bus->resource[0]->end = hose->io_resource->end;
-                bus->resource[1]->end = hose->mem_resource->end;
-                /* Turn off downstream PF memory address range by default */
-                bus->resource[2]->start = 1024*1024;
-                bus->resource[2]->end = bus->resource[2]->start - 1;
-        }
-}
-
-char *pcibios_setup(char *str)
-{
-	return str;
-}
-
-void
-pcibios_align_resource(void *data, struct resource *res, unsigned long size)
-{
-	/* this should not be called */
-	MIPS_ASSERT(1 == 0);
-}
-
-void
-pcibios_update_resource(struct pci_dev *dev, struct resource *root,
-                             struct resource *res, int resource)
-{
-	/* this should not be called */
-	MIPS_ASSERT(1 == 0);
-}