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Commit 98333851 authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: pci: HAVE_PCI_MMAP support.



Derived from the MIPS version, now uses pgprot_noncached().

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 4c5107e4
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+3 −3
Original line number Diff line number Diff line
#
# Makefile for the PCI specific kernel interface routines under Linux.
#

obj-$(CONFIG_PCI_AUTO)			:= pci.o pci-auto.o
obj-$(CONFIG_PCI_NEW)			:= pci-new.o
obj-y					+= pci-lib.o
obj-$(CONFIG_PCI_AUTO)			+= pci.o pci-auto.o
obj-$(CONFIG_PCI_NEW)			+= pci-new.o

obj-$(CONFIG_CPU_SUBTYPE_SH7751)	+= pci-sh7751.o ops-sh4.o
obj-$(CONFIG_CPU_SUBTYPE_SH7751R)	+= pci-sh7751.o ops-sh4.o
+26 −0
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#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>

int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
			enum pci_mmap_state mmap_state, int write_combine)
{
	/*
	 * I/O space can be accessed via normal processor loads and stores on
	 * this platform but for now we elect not to do this and portable
	 * drivers should not do this anyway.
	 */
	if (mmap_state == pci_mmap_io)
		return -EINVAL;

	/*
	 * Ignore write-combine; for now only return uncached mappings.
	 */
	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);

	return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
			       vma->vm_end - vma->vm_start,
			       vma->vm_page_prot);
}
+3 −0
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@@ -40,6 +40,9 @@ extern struct pci_channel board_pci_channels[];

struct pci_dev;

#define HAVE_PCI_MMAP
extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
	enum pci_mmap_state mmap_state, int write_combine);
extern void pcibios_set_master(struct pci_dev *dev);

static inline void pcibios_penalize_isa_irq(int irq, int active)