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https://github.com/torvalds/linux
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3f8daeacd7
This moves the remaining common bits in to pci-lib. Thereby reducing pci.c/pci-new.c to simple bus fixups and controller registration. As more platforms are moved over, the old code will disappear completely and the pci-new bits will be rolled in to pci-lib, eventually replacing pci.c completely. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
/*
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* arch/sh/drivers/pci/pci.c
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*
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* Copyright (c) 2002 M. R. Brown <mrbrown@linux-sh.org>
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* Copyright (c) 2004 - 2006 Paul Mundt <lethal@linux-sh.org>
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*
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* These functions are collected here to reduce duplication of common
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* code amongst the many platform-specific PCI support code files.
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*
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* These routines require the following board-specific routines:
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* void pcibios_fixup_irqs();
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*
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* See include/asm-sh/pci.h for more information.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/dma-debug.h>
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#include <asm/io.h>
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static int __init pcibios_init(void)
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{
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struct pci_channel *p;
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struct pci_bus *bus;
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int busno;
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/* init channels */
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busno = 0;
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for (p = board_pci_channels; p->init; p++) {
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if (p->init(p) == 0)
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p->enabled = 1;
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else
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pr_err("Unable to init pci channel %d\n", busno);
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busno++;
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}
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#ifdef CONFIG_PCI_AUTO
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/* assign resources */
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busno = 0;
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for (p = board_pci_channels; p->init; p++)
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if (p->enabled)
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busno = pciauto_assign_resources(busno, p) + 1;
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#endif
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/* scan the buses */
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busno = 0;
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for (p = board_pci_channels; p->init; p++) {
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if (p->enabled) {
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bus = pci_scan_bus(busno, p->pci_ops, p);
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busno = bus->subordinate + 1;
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}
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}
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pci_fixup_irqs(pci_common_swizzle, pcibios_map_platform_irq);
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dma_debug_add_bus(&pci_bus_type);
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return 0;
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}
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subsys_initcall(pcibios_init);
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/*
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* Called after each bus is probed, but before its children
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* are examined.
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*/
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void __devinit __weak pcibios_fixup_bus(struct pci_bus *bus)
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{
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pci_read_bridge_bases(bus);
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}
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EXPORT_SYMBOL(board_pci_channels);
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