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Commit bf656998 authored by David S. Miller's avatar David S. Miller
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Merge branch 'sparc32_generic_io_h' 

Sam Ravnborg says:

====================
sparc32: introduce asm-generic

Inspired by Michal Simek <monstr@monstr.eu> this patch-set
introduces asm-generic/io.h for sparc32.

As the diff-stat tells this was a nice code-reduction.

The changes are done on top of the previous sent sparse warning cleanup.
But I do not expect any difficult conflicts if applied alone.

leon_pci + pcic are touched because they had local
and identical implementations of functiones that are
static inline in asm-generic/io.h

leon_pci_grpci1 + leon_pci_grpci2 are touched becuse they
used a sparc spacific implmentation of swab32.
They have just been changed to use the global variant.

I also looked at sparc64 - but there were to many
sparc64 assembler implementations of the io
functons - and the generic io.h did not support this mix.

The last patch kills a few defines in io.h for sbus.
I assume they were introduced before the functions
were all shifted over to __iomem style pointers.
The same could be done for sparc64 - but then
there were even more of the same so I left
this for another time.

The patch-set has been build tested only.
My attempts to test this using qemu have failed as
the qemu version I have errors out.
And my fedora box are mssing some libs to build
qemu from source :-(
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 8cf749a8 c3373da9
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arch/sparc/include/asm/io_32.h
View file @ bf656998
......@@ -2,191 +2,94 @@
#define __SPARC_IO_H
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/ioport.h> /* struct resource */
#include <asm/page.h> /* IO address mapping routines need this */
#include <asm-generic/pci_iomap.h>
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
static inline u32 flip_dword (u32 l)
{
return ((l&0xff)<<24) | (((l>>8)&0xff)<<16) | (((l>>16)&0xff)<<8)| ((l>>24)&0xff);
}
static inline u16 flip_word (u16 w)
{
return ((w&0xff) << 8) | ((w>>8)&0xff);
}
#define mmiowb()
/*
* Memory mapped I/O to PCI
*/
static inline u8 __raw_readb(const volatile void __iomem *addr)
{
return *(__force volatile u8 *)addr;
}
static inline u16 __raw_readw(const volatile void __iomem *addr)
{
return *(__force volatile u16 *)addr;
}
static inline u32 __raw_readl(const volatile void __iomem *addr)
{
return *(__force volatile u32 *)addr;
}
#define readb_relaxed(__addr) readb(__addr)
#define readw_relaxed(__addr) readw(__addr)
#define readl_relaxed(__addr) readl(__addr)
static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
{
*(__force volatile u8 *)addr = b;
}
#define IO_SPACE_LIMIT 0xffffffff
static inline void __raw_writew(u16 w, volatile void __iomem *addr)
{
*(__force volatile u16 *)addr = w;
}
#define memset_io(d,c,sz) _memset_io(d,c,sz)
#define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
#define memcpy_toio(d,s,sz) _memcpy_toio(d,s,sz)
static inline void __raw_writel(u32 l, volatile void __iomem *addr)
{
*(__force volatile u32 *)addr = l;
}
#include <asm-generic/io.h>
static inline u8 __readb(const volatile void __iomem *addr)
static inline void _memset_io(volatile void __iomem *dst,
int c, __kernel_size_t n)
{
return *(__force volatile u8 *)addr;
}
volatile void __iomem *d = dst;
static inline u16 __readw(const volatile void __iomem *addr)
{
return flip_word(*(__force volatile u16 *)addr);
while (n--) {
writeb(c, d);
d++;
}
}
static inline u32 __readl(const volatile void __iomem *addr)
static inline void _memcpy_fromio(void *dst, const volatile void __iomem *src,
__kernel_size_t n)
{
return flip_dword(*(__force volatile u32 *)addr);
}
char *d = dst;
static inline void __writeb(u8 b, volatile void __iomem *addr)
{
*(__force volatile u8 *)addr = b;
while (n--) {
char tmp = readb(src);
*d++ = tmp;
src++;
}
}
static inline void __writew(u16 w, volatile void __iomem *addr)
static inline void _memcpy_toio(volatile void __iomem *dst, const void *src,
__kernel_size_t n)
{
*(__force volatile u16 *)addr = flip_word(w);
}
const char *s = src;
volatile void __iomem *d = dst;
static inline void __writel(u32 l, volatile void __iomem *addr)
{
*(__force volatile u32 *)addr = flip_dword(l);
while (n--) {
char tmp = *s++;
writeb(tmp, d);
d++;
}
}
#define readb(__addr) __readb(__addr)
#define readw(__addr) __readw(__addr)
#define readl(__addr) __readl(__addr)
#define readb_relaxed(__addr) readb(__addr)
#define readw_relaxed(__addr) readw(__addr)
#define readl_relaxed(__addr) readl(__addr)
#define writeb(__b, __addr) __writeb((__b),(__addr))
#define writew(__w, __addr) __writew((__w),(__addr))
#define writel(__l, __addr) __writel((__l),(__addr))
/*
* I/O space operations
*
* Arrangement on a Sun is somewhat complicated.
*
* First of all, we want to use standard Linux drivers
* for keyboard, PC serial, etc. These drivers think
* they access I/O space and use inb/outb.
* On the other hand, EBus bridge accepts PCI *memory*
* cycles and converts them into ISA *I/O* cycles.
* Ergo, we want inb & outb to generate PCI memory cycles.
*
* If we want to issue PCI *I/O* cycles, we do this
* with a low 64K fixed window in PCIC. This window gets
* mapped somewhere into virtual kernel space and we
* can use inb/outb again.
*/
#define inb_local(__addr) __readb((void __iomem *)(unsigned long)(__addr))
#define inb(__addr) __readb((void __iomem *)(unsigned long)(__addr))
#define inw(__addr) __readw((void __iomem *)(unsigned long)(__addr))
#define inl(__addr) __readl((void __iomem *)(unsigned long)(__addr))
#define outb_local(__b, __addr) __writeb(__b, (void __iomem *)(unsigned long)(__addr))
#define outb(__b, __addr) __writeb(__b, (void __iomem *)(unsigned long)(__addr))
#define outw(__w, __addr) __writew(__w, (void __iomem *)(unsigned long)(__addr))
#define outl(__l, __addr) __writel(__l, (void __iomem *)(unsigned long)(__addr))
#define inb_p(__addr) inb(__addr)
#define outb_p(__b, __addr) outb(__b, __addr)
#define inw_p(__addr) inw(__addr)
#define outw_p(__w, __addr) outw(__w, __addr)
#define inl_p(__addr) inl(__addr)
#define outl_p(__l, __addr) outl(__l, __addr)
void outsb(unsigned long addr, const void *src, unsigned long cnt);
void outsw(unsigned long addr, const void *src, unsigned long cnt);
void outsl(unsigned long addr, const void *src, unsigned long cnt);
void insb(unsigned long addr, void *dst, unsigned long count);
void insw(unsigned long addr, void *dst, unsigned long count);
void insl(unsigned long addr, void *dst, unsigned long count);
#define IO_SPACE_LIMIT 0xffffffff
/*
* SBus accessors.
*
* SBus has only one, memory mapped, I/O space.
* We do not need to flip bytes for SBus of course.
*/
static inline u8 _sbus_readb(const volatile void __iomem *addr)
static inline u8 sbus_readb(const volatile void __iomem *addr)
{
return *(__force volatile u8 *)addr;
}
static inline u16 _sbus_readw(const volatile void __iomem *addr)
static inline u16 sbus_readw(const volatile void __iomem *addr)
{
return *(__force volatile u16 *)addr;
}
static inline u32 _sbus_readl(const volatile void __iomem *addr)
static inline u32 sbus_readl(const volatile void __iomem *addr)
{
return *(__force volatile u32 *)addr;
}
static inline void _sbus_writeb(u8 b, volatile void __iomem *addr)
static inline void sbus_writeb(u8 b, volatile void __iomem *addr)
{
*(__force volatile u8 *)addr = b;
}
static inline void _sbus_writew(u16 w, volatile void __iomem *addr)
static inline void sbus_writew(u16 w, volatile void __iomem *addr)
{
*(__force volatile u16 *)addr = w;
}
static inline void _sbus_writel(u32 l, volatile void __iomem *addr)
static inline void sbus_writel(u32 l, volatile void __iomem *addr)
{
*(__force volatile u32 *)addr = l;
}
/*
* The only reason for #define's is to hide casts to unsigned long.
*/
#define sbus_readb(__addr) _sbus_readb(__addr)
#define sbus_readw(__addr) _sbus_readw(__addr)
#define sbus_readl(__addr) _sbus_readl(__addr)
#define sbus_writeb(__b, __addr) _sbus_writeb(__b, __addr)
#define sbus_writew(__w, __addr) _sbus_writew(__w, __addr)
#define sbus_writel(__l, __addr) _sbus_writel(__l, __addr)
static inline void sbus_memset_io(volatile void __iomem *__dst, int c, __kernel_size_t n)
static inline void sbus_memset_io(volatile void __iomem *__dst, int c,
__kernel_size_t n)
{
while(n--) {
sbus_writeb(c, __dst);
......@@ -194,22 +97,9 @@ static inline void sbus_memset_io(volatile void __iomem *__dst, int c, __kernel_
}
}
static inline void
_memset_io(volatile void __iomem *dst, int c, __kernel_size_t n)
{
volatile void __iomem *d = dst;
while (n--) {
writeb(c, d);
d++;
}
}
#define memset_io(d,c,sz) _memset_io(d,c,sz)
static inline void
_sbus_memcpy_fromio(void *dst, const volatile void __iomem *src,
__kernel_size_t n)
static inline void sbus_memcpy_fromio(void *dst,
const volatile void __iomem *src,
__kernel_size_t n)
{
char *d = dst;
......@@ -220,25 +110,9 @@ _sbus_memcpy_fromio(void *dst, const volatile void __iomem *src,
}
}
#define sbus_memcpy_fromio(d, s, sz) _sbus_memcpy_fromio(d, s, sz)
static inline void
_memcpy_fromio(void *dst, const volatile void __iomem *src, __kernel_size_t n)
{
char *d = dst;
while (n--) {
char tmp = readb(src);
*d++ = tmp;
src++;
}
}
#define memcpy_fromio(d,s,sz) _memcpy_fromio(d,s,sz)
static inline void
_sbus_memcpy_toio(volatile void __iomem *dst, const void *src,
__kernel_size_t n)
static inline void sbus_memcpy_toio(volatile void __iomem *dst,
const void *src,
__kernel_size_t n)
{
const char *s = src;
volatile void __iomem *d = dst;
......@@ -250,23 +124,6 @@ _sbus_memcpy_toio(volatile void __iomem *dst, const void *src,
}
}
#define sbus_memcpy_toio(d, s, sz) _sbus_memcpy_toio(d, s, sz)
static inline void
_memcpy_toio(volatile void __iomem *dst, const void *src, __kernel_size_t n)
{
const char *s = src;
volatile void __iomem *d = dst;
while (n--) {
char tmp = *s++;
writeb(tmp, d);
d++;
}
}
#define memcpy_toio(d,s,sz) _memcpy_toio(d,s,sz)
#ifdef __KERNEL__
/*
......@@ -278,46 +135,6 @@ extern void __iomem *ioremap(unsigned long offset, unsigned long size);
#define ioremap_wc(X,Y) ioremap((X),(Y))
extern void iounmap(volatile void __iomem *addr);
#define ioread8(X) readb(X)
#define ioread16(X) readw(X)
#define ioread16be(X) __raw_readw(X)
#define ioread32(X) readl(X)
#define ioread32be(X) __raw_readl(X)
#define iowrite8(val,X) writeb(val,X)
#define iowrite16(val,X) writew(val,X)
#define iowrite16be(val,X) __raw_writew(val,X)
#define iowrite32(val,X) writel(val,X)
#define iowrite32be(val,X) __raw_writel(val,X)
static inline void ioread8_rep(void __iomem *port, void *buf, unsigned long count)
{
insb((unsigned long __force)port, buf, count);
}
static inline void ioread16_rep(void __iomem *port, void *buf, unsigned long count)
{
insw((unsigned long __force)port, buf, count);
}
static inline void ioread32_rep(void __iomem *port, void *buf, unsigned long count)
{
insl((unsigned long __force)port, buf, count);
}
static inline void iowrite8_rep(void __iomem *port, const void *buf, unsigned long count)
{
outsb((unsigned long __force)port, buf, count);
}
static inline void iowrite16_rep(void __iomem *port, const void *buf, unsigned long count)
{
outsw((unsigned long __force)port, buf, count);
}
static inline void iowrite32_rep(void __iomem *port, const void *buf, unsigned long count)
{
outsl((unsigned long __force)port, buf, count);
}
/* Create a virtual mapping cookie for an IO port range */
extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
extern void ioport_unmap(void __iomem *);
......@@ -326,6 +143,8 @@ extern void ioport_unmap(void __iomem *);
struct pci_dev;
extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
/*
* At the moment, we do not use CMOS_READ anywhere outside of rtc.c,
* so rtc_port is static in it. This should not change unless a new
......@@ -349,15 +168,5 @@ extern void sbus_set_sbus64(struct device *, int);
#define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
* access
*/
#define xlate_dev_mem_ptr(p) __va(p)
/*
* Convert a virtual cached pointer to an uncached pointer
*/
#define xlate_dev_kmem_ptr(p) p
#endif /* !(__SPARC_IO_H) */
arch/sparc/include/asm/io_64.h
View file @ bf656998
......@@ -15,7 +15,6 @@
/* BIO layer definitions. */
extern unsigned long kern_base, kern_size;
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
static inline u8 _inb(unsigned long addr)
{
......
arch/sparc/include/asm/page.h
View file @ bf656998
#ifndef ___ASM_SPARC_PAGE_H
#define ___ASM_SPARC_PAGE_H
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#if defined(__sparc__) && defined(__arch64__)
#include <asm/page_64.h>
#else
......
arch/sparc/kernel/leon_pci.c
View file @ bf656998
......@@ -98,82 +98,3 @@ resource_size_t pcibios_align_resource(void *data, const struct resource *res,
{
return res->start;
}
/* in/out routines taken from pcic.c
*
* This probably belongs here rather than ioport.c because
* we do not want this crud linked into SBus kernels.
* Also, think for a moment about likes of floppy.c that
* include architecture specific parts. They may want to redefine ins/outs.
*
* We do not use horrible macros here because we want to
* advance pointer by sizeof(size).
*/
void outsb(unsigned long addr, const void *src, unsigned long count)
{
while (count) {
count -= 1;
outb(*(const char *)src, addr);
src += 1;
/* addr += 1; */
}
}
EXPORT_SYMBOL(outsb);
void outsw(unsigned long addr, const void *src, unsigned long count)
{
while (count) {
count -= 2;
outw(*(const short *)src, addr);
src += 2;
/* addr += 2; */
}
}
EXPORT_SYMBOL(outsw);
void outsl(unsigned long addr, const void *src, unsigned long count)
{
while (count) {
count -= 4;
outl(*(const long *)src, addr);
src += 4;
/* addr += 4; */
}
}
EXPORT_SYMBOL(outsl);
void insb(unsigned long addr, void *dst, unsigned long count)
{
while (count) {
count -= 1;
*(unsigned char *)dst = inb(addr);
dst += 1;
/* addr += 1; */
}
}
EXPORT_SYMBOL(insb);
void insw(unsigned long addr, void *dst, unsigned long count)
{
while (count) {
count -= 2;
*(unsigned short *)dst = inw(addr);
dst += 2;
/* addr += 2; */
}
}
EXPORT_SYMBOL(insw);
void insl(unsigned long addr, void *dst, unsigned long count)
{
while (count) {
count -= 4;
/*
* XXX I am sure we are in for an unaligned trap here.
*/
*(unsigned long *)dst = inl(addr);
dst += 4;
/* addr += 4; */
}
}
EXPORT_SYMBOL(insl);
arch/sparc/kernel/leon_pci_grpci1.c
View file @ bf656998
......@@ -144,7 +144,7 @@ static int grpci1_cfg_r32(struct grpci1_priv *priv, unsigned int bus,
grpci1_cfg_w32(priv, TGT, 0, PCI_COMMAND, tmp);
} else {
/* Bus always little endian (unaffected by byte-swapping) */
*val = flip_dword(tmp);
*val = swab32(tmp);
}
return 0;
......@@ -197,7 +197,7 @@ static int grpci1_cfg_w32(struct grpci1_priv *priv, unsigned int bus,
pci_conf = (unsigned int *) (priv->pci_conf |
(devfn << 8) | (where & 0xfc));
LEON3_BYPASS_STORE_PA(pci_conf, flip_dword(val));
LEON3_BYPASS_STORE_PA(pci_conf, swab32(val));
return 0;
}
......
arch/sparc/kernel/leon_pci_grpci2.c
View file @ bf656998
......@@ -270,7 +270,7 @@ static int grpci2_cfg_r32(struct grpci2_priv *priv, unsigned int bus,
*val = 0xffffffff;
} else {
/* Bus always little endian (unaffected by byte-swapping) */
*val = flip_dword(tmp);
*val = swab32(tmp);
}
return 0;
......@@ -328,7 +328,7 @@ static int grpci2_cfg_w32(struct grpci2_priv *priv, unsigned int bus,
pci_conf = (unsigned int *) (priv->pci_conf |
(devfn << 8) | (where & 0xfc));
LEON3_BYPASS_STORE_PA(pci_conf, flip_dword(val));
LEON3_BYPASS_STORE_PA(pci_conf, swab32(val));
/* Wait until GRPCI2 signals that CFG access is done, it should be
* done instantaneously unless a DMA operation is ongoing...
......
arch/sparc/kernel/pcic.c
View file @ bf656998
......@@ -783,7 +783,7 @@ int pcibios_enable_device(struct pci_dev *pdev, int mask)
void pcic_nmi(unsigned int pend, struct pt_regs *regs)
{
pend = flip_dword(pend);
pend = swab32(pend);
if (!pcic_speculative || (pend & PCI_SYS_INT_PENDING_PIO) == 0) {
/*
......@@ -875,82 +875,4 @@ void __init sun4m_pci_init_IRQ(void)
sparc_config.load_profile_irq = pcic_load_profile_irq;
}
/*
* This probably belongs here rather than ioport.c because
* we do not want this crud linked into SBus kernels.
* Also, think for a moment about likes of floppy.c that
* include architecture specific parts. They may want to redefine ins/outs.
*
* We do not use horrible macros here because we want to
* advance pointer by sizeof(size).
*/
void outsb(unsigned long addr, const void *src, unsigned long count)
{
while (count) {
count -= 1;
outb(*(const char *)src, addr);
src += 1;
/* addr += 1; */
}
}
EXPORT_SYMBOL(outsb);
void outsw(unsigned long addr, const void *src, unsigned long count)
{
while (count) {
count -= 2;
outw(*(const short *)src, addr);
src += 2;
/* addr += 2; */
}
}
EXPORT_SYMBOL(outsw);
void outsl(unsigned long addr, const void *src, unsigned long count)
{
while (count) {
count -= 4;
outl(*(const long *)src, addr);
src += 4;
/* addr += 4; */
}
}
EXPORT_SYMBOL(outsl);
void insb(unsigned long addr, void *dst, unsigned long count)
{
while (count) {
count -= 1;
*(unsigned char *)dst = inb(addr);
dst += 1;
/* addr += 1; */
}
}
EXPORT_SYMBOL(insb);
void insw(unsigned long addr, void *dst, unsigned long count)
{
while (count) {
count -= 2;
*(unsigned short *)dst = inw(addr);
dst += 2;
/* addr += 2; */
}
}
EXPORT_SYMBOL(insw);
void insl(unsigned long addr, void *dst, unsigned long count)
{
while (count) {
count -= 4;
/*
* XXX I am sure we are in for an unaligned trap here.
*/
*(unsigned long *)dst = inl(addr);
dst += 4;
/* addr += 4; */
}
}
EXPORT_SYMBOL(insl);
subsys_initcall(pcic_init);
arch/sparc/lib/Makefile
View file @ bf656998
......@@ -41,7 +41,7 @@ lib-$(CONFIG_SPARC64) += GENpatch.o GENpage.o GENbzero.o
lib-$(CONFIG_SPARC64) += copy_in_user.o user_fixup.o memmove.o
lib-$(CONFIG_SPARC64) += mcount.o ipcsum.o xor.o hweight.o ffs.o
obj-y += iomap.o
obj-$(CONFIG_SPARC64) += iomap.o
obj-$(CONFIG_SPARC32) += atomic32.o ucmpdi2.o
obj-y += ksyms.o
obj-$(CONFIG_SPARC64) += PeeCeeI.o
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