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[PATCH] powerpc: remove io_page_mask

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Cleanup patch which removes the io_page_mask.  It fixes the reset on
some e1000 devices which is needed for clean kexec reboots.  The legacy
devices which broke with this patch (parallel port and PC speaker) have
now been fixed in Linus' tree.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Anton Blanchard 2006-04-07 15:23:03 +10:00 committed by Paul Mackerras
parent 81bbbe9294
commit c256f4b959
7 changed files with 6 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/kernel/iomap.c
View File

@ -106,8 +106,6 @@ EXPORT_SYMBOL(iowrite32_rep);
void __iomem *ioport_map(unsigned long port, unsigned int len)
{
if (!_IO_IS_VALID(port))
return NULL;
return (void __iomem *) (port+pci_io_base);
}

30
arch/powerpc/kernel/pci_64.c
View File

@ -42,14 +42,6 @@
unsigned long pci_probe_only = 1;
int pci_assign_all_buses = 0;
/*
* legal IO pages under MAX_ISA_PORT. This is to ensure we don't touch
* devices we don't have access to.
*/
unsigned long io_page_mask;
EXPORT_SYMBOL(io_page_mask);
#ifdef CONFIG_PPC_MULTIPLATFORM
static void fixup_resource(struct resource *res, struct pci_dev *dev);
static void do_bus_setup(struct pci_bus *bus);
@ -1104,8 +1096,6 @@ void __init pci_setup_phb_io(struct pci_controller *hose, int primary)
pci_process_ISA_OF_ranges(isa_dn, hose->io_base_phys,
hose->io_base_virt);
of_node_put(isa_dn);
/* Allow all IO */
io_page_mask = -1;
}
}
@ -1232,27 +1222,13 @@ static void phbs_remap_io(void)
static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
{
struct pci_controller *hose = pci_bus_to_host(dev->bus);
unsigned long start, end, mask, offset;
unsigned long offset;
if (res->flags & IORESOURCE_IO) {
offset = (unsigned long)hose->io_base_virt - pci_io_base;
start = res->start += offset;
end = res->end += offset;
/* Need to allow IO access to pages that are in the
ISA range */
if (start < MAX_ISA_PORT) {
if (end > MAX_ISA_PORT)
end = MAX_ISA_PORT;
start >>= PAGE_SHIFT;
end >>= PAGE_SHIFT;
/* get the range of pages for the map */
mask = ((1 << (end+1)) - 1) ^ ((1 << start) - 1);
io_page_mask |= mask;
}
res->start += offset;
res->end += offset;
} else if (res->flags & IORESOURCE_MEM) {
res->start += hose->pci_mem_offset;
res->end += hose->pci_mem_offset;

3
arch/powerpc/platforms/iseries/pci.c
View File

@ -45,8 +45,6 @@
#include "call_pci.h"
#include "iommu.h"
extern unsigned long io_page_mask;
/*
* Forward declares of prototypes.
*/
@ -277,7 +275,6 @@ void iSeries_pcibios_init(void)
{
iomm_table_initialize();
find_and_init_phbs();
io_page_mask = -1;
}
/*

3
arch/powerpc/platforms/maple/pci.c
View File

@ -437,9 +437,6 @@ void __init maple_pci_init(void)
/* Tell pci.c to not change any resource allocations. */
pci_probe_only = 1;
/* Allow all IO */
io_page_mask = -1;
}
int maple_pci_get_legacy_ide_irq(struct pci_dev *pdev, int channel)

3
arch/powerpc/platforms/powermac/pci.c
View File

@ -1068,9 +1068,6 @@ void __init pmac_pci_init(void)
/* Tell pci.c to not use the common resource allocation mechanism */
pci_probe_only = 1;
/* Allow all IO */
io_page_mask = -1;
#else /* CONFIG_PPC64 */
init_p2pbridge();
fixup_nec_usb2();

15
include/asm-powerpc/eeh.h
View File

@ -293,8 +293,6 @@ static inline void eeh_memcpy_toio(volatile void __iomem *dest, const void *src,
static inline u8 eeh_inb(unsigned long port)
{
u8 val;
if (!_IO_IS_VALID(port))
return ~0;
val = in_8((u8 __iomem *)(port+pci_io_base));
if (EEH_POSSIBLE_ERROR(val, u8))
return eeh_check_failure((void __iomem *)(port), val);
@ -303,15 +301,12 @@ static inline u8 eeh_inb(unsigned long port)
static inline void eeh_outb(u8 val, unsigned long port)
{
if (_IO_IS_VALID(port))
out_8((u8 __iomem *)(port+pci_io_base), val);
out_8((u8 __iomem *)(port+pci_io_base), val);
}
static inline u16 eeh_inw(unsigned long port)
{
u16 val;
if (!_IO_IS_VALID(port))
return ~0;
val = in_le16((u16 __iomem *)(port+pci_io_base));
if (EEH_POSSIBLE_ERROR(val, u16))
return eeh_check_failure((void __iomem *)(port), val);
@ -320,15 +315,12 @@ static inline u16 eeh_inw(unsigned long port)
static inline void eeh_outw(u16 val, unsigned long port)
{
if (_IO_IS_VALID(port))
out_le16((u16 __iomem *)(port+pci_io_base), val);
out_le16((u16 __iomem *)(port+pci_io_base), val);
}
static inline u32 eeh_inl(unsigned long port)
{
u32 val;
if (!_IO_IS_VALID(port))
return ~0;
val = in_le32((u32 __iomem *)(port+pci_io_base));
if (EEH_POSSIBLE_ERROR(val, u32))
return eeh_check_failure((void __iomem *)(port), val);
@ -337,8 +329,7 @@ static inline u32 eeh_inl(unsigned long port)
static inline void eeh_outl(u32 val, unsigned long port)
{
if (_IO_IS_VALID(port))
out_le32((u32 __iomem *)(port+pci_io_base), val);
out_le32((u32 __iomem *)(port+pci_io_base), val);
}
/* in-string eeh macros */

6
include/asm-powerpc/io.h
View File

@ -37,12 +37,6 @@
extern unsigned long isa_io_base;
extern unsigned long pci_io_base;
extern unsigned long io_page_mask;
#define MAX_ISA_PORT 0x10000
#define _IO_IS_VALID(port) ((port) >= MAX_ISA_PORT || (1 << (port>>PAGE_SHIFT)) \
& io_page_mask)
#ifdef CONFIG_PPC_ISERIES
/* __raw_* accessors aren't supported on iSeries */