2311b1f2bb
This is an updated version of Ben's fix-pci-mmap-on-ppc-and-ppc64.patch which is in 2.6.12-rc4-mm1. It fixes the patch to work on PPC iSeries, removes some debug printks at Ben's request, and incorporates your fix-pci-mmap-on-ppc-and-ppc64-fix.patch also. Originally from Benjamin Herrenschmidt <benh@kernel.crashing.org> This patch was discussed at length on linux-pci and so far, the last iteration of it didn't raise any comment. It's effect is a nop on architecture that don't define the new pci_resource_to_user() callback anyway. It allows architecture like ppc who put weird things inside of PCI resource structures to convert to some different value for user visible ones. It also fixes mmap'ing of IO space on those archs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
#ifndef __PPC_PCI_H
|
|
#define __PPC_PCI_H
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <linux/mm.h>
|
|
#include <asm/scatterlist.h>
|
|
#include <asm/io.h>
|
|
#include <asm/pci-bridge.h>
|
|
#include <asm-generic/pci-dma-compat.h>
|
|
|
|
struct pci_dev;
|
|
|
|
/* Values for the `which' argument to sys_pciconfig_iobase syscall. */
|
|
#define IOBASE_BRIDGE_NUMBER 0
|
|
#define IOBASE_MEMORY 1
|
|
#define IOBASE_IO 2
|
|
#define IOBASE_ISA_IO 3
|
|
#define IOBASE_ISA_MEM 4
|
|
|
|
/*
|
|
* Set this to 1 if you want the kernel to re-assign all PCI
|
|
* bus numbers
|
|
*/
|
|
extern int pci_assign_all_busses;
|
|
|
|
#define pcibios_assign_all_busses() (pci_assign_all_busses)
|
|
#define pcibios_scan_all_fns(a, b) 0
|
|
|
|
#define PCIBIOS_MIN_IO 0x1000
|
|
#define PCIBIOS_MIN_MEM 0x10000000
|
|
|
|
extern inline void pcibios_set_master(struct pci_dev *dev)
|
|
{
|
|
/* No special bus mastering setup handling */
|
|
}
|
|
|
|
extern inline void pcibios_penalize_isa_irq(int irq)
|
|
{
|
|
/* We don't do dynamic PCI IRQ allocation */
|
|
}
|
|
|
|
extern unsigned long pci_resource_to_bus(struct pci_dev *pdev, struct resource *res);
|
|
|
|
/*
|
|
* The PCI bus bridge can translate addresses issued by the processor(s)
|
|
* into a different address on the PCI bus. On 32-bit cpus, we assume
|
|
* this mapping is 1-1, but on 64-bit systems it often isn't.
|
|
*
|
|
* Obsolete ! Drivers should now use pci_resource_to_bus
|
|
*/
|
|
extern unsigned long phys_to_bus(unsigned long pa);
|
|
extern unsigned long pci_phys_to_bus(unsigned long pa, int busnr);
|
|
extern unsigned long pci_bus_to_phys(unsigned int ba, int busnr);
|
|
|
|
/* The PCI address space does equal the physical memory
|
|
* address space. The networking and block device layers use
|
|
* this boolean for bounce buffer decisions.
|
|
*/
|
|
#define PCI_DMA_BUS_IS_PHYS (1)
|
|
|
|
/* pci_unmap_{page,single} is a nop so... */
|
|
#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
|
|
#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
|
|
#define pci_unmap_addr(PTR, ADDR_NAME) (0)
|
|
#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)
|
|
#define pci_unmap_len(PTR, LEN_NAME) (0)
|
|
#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
|
|
|
|
/*
|
|
* At present there are very few 32-bit PPC machines that can have
|
|
* memory above the 4GB point, and we don't support that.
|
|
*/
|
|
#define pci_dac_dma_supported(pci_dev, mask) (0)
|
|
|
|
/* Return the index of the PCI controller for device PDEV. */
|
|
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
|
|
|
|
/* Set the name of the bus as it appears in /proc/bus/pci */
|
|
static inline int pci_proc_domain(struct pci_bus *bus)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* Map a range of PCI memory or I/O space for a device into user space */
|
|
int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
|
|
enum pci_mmap_state mmap_state, int write_combine);
|
|
|
|
/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
|
|
#define HAVE_PCI_MMAP 1
|
|
|
|
extern void
|
|
pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
|
|
struct resource *res);
|
|
|
|
extern void pcibios_add_platform_entries(struct pci_dev *dev);
|
|
|
|
struct file;
|
|
extern pgprot_t pci_phys_mem_access_prot(struct file *file,
|
|
unsigned long offset,
|
|
unsigned long size,
|
|
pgprot_t prot);
|
|
|
|
#define HAVE_ARCH_PCI_RESOURCE_TO_USER
|
|
extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
|
|
const struct resource *rsrc,
|
|
u64 *start, u64 *end);
|
|
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __PPC_PCI_H */
|