diff options
Diffstat (limited to 'arch/sh/drivers/pci/pci.c')
| -rw-r--r-- | arch/sh/drivers/pci/pci.c | 58 |
1 files changed, 46 insertions, 12 deletions
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c index 3d546ba329cfb8..1f5e23e8b1634c 100644 --- a/arch/sh/drivers/pci/pci.c +++ b/arch/sh/drivers/pci/pci.c @@ -1,21 +1,25 @@ -/* arch/sh/kernel/pci.c - * $Id: pci.c,v 1.1 2003/08/24 19:15:45 lethal Exp $ +/* + * arch/sh/drivers/pci/pci.c * * Copyright (c) 2002 M. R. Brown <mrbrown@linux-sh.org> - * - * + * Copyright (c) 2004, 2005 Paul Mundt <lethal@linux-sh.org> + * * These functions are collected here to reduce duplication of common * code amongst the many platform-specific PCI support code files. - * + * * These routines require the following board-specific routines: * void pcibios_fixup_irqs(); * * See include/asm-sh/pci.h for more information. + * + * 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. */ - #include <linux/kernel.h> #include <linux/pci.h> #include <linux/init.h> +#include <asm/io.h> static int __init pcibios_init(void) { @@ -26,9 +30,8 @@ static int __init pcibios_init(void) #ifdef CONFIG_PCI_AUTO /* assign resources */ busno = 0; - for (p = board_pci_channels; p->pci_ops != NULL; p++) { + for (p = board_pci_channels; p->pci_ops != NULL; p++) busno = pciauto_assign_resources(busno, p) + 1; - } #endif /* scan the buses */ @@ -61,13 +64,17 @@ pcibios_update_resource(struct pci_dev *dev, struct resource *root, new |= PCI_ROM_ADDRESS_ENABLE; reg = dev->rom_base_reg; } else { - /* Somebody might have asked allocation of a non-standard resource */ + /* + * Somebody might have asked allocation of a non-standard + * resource + */ return; } - + pci_write_config_dword(dev, reg, new); pci_read_config_dword(dev, reg, &check); - if ((new ^ check) & ((new & PCI_BASE_ADDRESS_SPACE_IO) ? PCI_BASE_ADDRESS_IO_MASK : PCI_BASE_ADDRESS_MEM_MASK)) { + if ((new ^ check) & ((new & PCI_BASE_ADDRESS_SPACE_IO) ? + PCI_BASE_ADDRESS_IO_MASK : PCI_BASE_ADDRESS_MEM_MASK)) { printk(KERN_ERR "PCI: Error while updating region " "%s/%d (%08x != %08x)\n", pci_name(dev), resource, new, check); @@ -145,7 +152,8 @@ void pcibios_set_master(struct pci_dev *dev) lat = pcibios_max_latency; else return; - printk(KERN_INFO "PCI: Setting latency timer of device %s to %d\n", pci_name(dev), lat); + printk(KERN_INFO "PCI: Setting latency timer of device %s to %d\n", + pci_name(dev), lat); pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat); } @@ -153,3 +161,29 @@ void __init pcibios_update_irq(struct pci_dev *dev, int irq) { pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); } + +void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen) +{ + unsigned long start = pci_resource_start(dev, bar); + unsigned long len = pci_resource_len(dev, bar); + unsigned long flags = pci_resource_flags(dev, bar); + + if (!len || !start) + return NULL; + if (maxlen && len > maxlen) + len = maxlen; + if (flags & IORESOURCE_IO) + return ioport_map(start, len); + if (flags & IORESOURCE_MEM) + return ioremap(start, len); + + return NULL; +} + +void pci_iounmap(struct pci_dev *dev, void __iomem *addr) +{ + iounmap(addr); +} + +EXPORT_SYMBOL(pci_iomap); +EXPORT_SYMBOL(pci_iounmap); |