Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
MIPS: Better than nothing implementation of PCI mmap to fix X.
diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 5510c53..053e463 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -79,6 +79,11 @@
/* We don't do dynamic PCI IRQ allocation */
}
+#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);
+
/*
* Dynamic DMA mapping stuff.
* MIPS has everything mapped statically.
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index a377e9d..62cae74 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -354,6 +354,30 @@
EXPORT_SYMBOL(PCIBIOS_MIN_MEM);
#endif
+int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+ enum pci_mmap_state mmap_state, int write_combine)
+{
+ unsigned long prot;
+
+ /*
+ * 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.
+ */
+ prot = pgprot_val(vma->vm_page_prot);
+ prot = (prot & ~_CACHE_MASK) | _CACHE_UNCACHED;
+ vma->vm_page_prot = __pgprot(prot);
+
+ return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+ vma->vm_end - vma->vm_start, vma->vm_page_prot);
+}
+
char * (*pcibios_plat_setup)(char *str) __devinitdata;
char *__devinit pcibios_setup(char *str)