mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 19:26:38 +07:00
a41d3862df
Remove CONFIG_DEBUG_IOREMAP, it's now obsolete and won't work anyway. Remove it from lib/KConfig since it was only available on parisc. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
487 lines
11 KiB
C
487 lines
11 KiB
C
/*
|
|
* iomap.c - Implement iomap interface for PA-RISC
|
|
* Copyright (c) 2004 Matthew Wilcox
|
|
*/
|
|
|
|
#include <linux/ioport.h>
|
|
#include <linux/pci.h>
|
|
#include <asm/io.h>
|
|
|
|
/*
|
|
* The iomap space on 32-bit PA-RISC is intended to look like this:
|
|
* 00000000-7fffffff virtual mapped IO
|
|
* 80000000-8fffffff ISA/EISA port space that can't be virtually mapped
|
|
* 90000000-9fffffff Dino port space
|
|
* a0000000-afffffff Astro port space
|
|
* b0000000-bfffffff PAT port space
|
|
* c0000000-cfffffff non-swapped memory IO
|
|
* f0000000-ffffffff legacy IO memory pointers
|
|
*
|
|
* For the moment, here's what it looks like:
|
|
* 80000000-8fffffff All ISA/EISA port space
|
|
* f0000000-ffffffff legacy IO memory pointers
|
|
*
|
|
* On 64-bit, everything is extended, so:
|
|
* 8000000000000000-8fffffffffffffff All ISA/EISA port space
|
|
* f000000000000000-ffffffffffffffff legacy IO memory pointers
|
|
*/
|
|
|
|
/*
|
|
* Technically, this should be 'if (VMALLOC_START < addr < VMALLOC_END),
|
|
* but that's slow and we know it'll be within the first 2GB.
|
|
*/
|
|
#ifdef CONFIG_64BIT
|
|
#define INDIRECT_ADDR(addr) (((unsigned long)(addr) & 1UL<<63) != 0)
|
|
#define ADDR_TO_REGION(addr) (((unsigned long)addr >> 60) & 7)
|
|
#define IOPORT_MAP_BASE (8UL << 60)
|
|
#else
|
|
#define INDIRECT_ADDR(addr) (((unsigned long)(addr) & 1UL<<31) != 0)
|
|
#define ADDR_TO_REGION(addr) (((unsigned long)addr >> 28) & 7)
|
|
#define IOPORT_MAP_BASE (8UL << 28)
|
|
#endif
|
|
|
|
struct iomap_ops {
|
|
unsigned int (*read8)(void __iomem *);
|
|
unsigned int (*read16)(void __iomem *);
|
|
unsigned int (*read16be)(void __iomem *);
|
|
unsigned int (*read32)(void __iomem *);
|
|
unsigned int (*read32be)(void __iomem *);
|
|
void (*write8)(u8, void __iomem *);
|
|
void (*write16)(u16, void __iomem *);
|
|
void (*write16be)(u16, void __iomem *);
|
|
void (*write32)(u32, void __iomem *);
|
|
void (*write32be)(u32, void __iomem *);
|
|
void (*read8r)(void __iomem *, void *, unsigned long);
|
|
void (*read16r)(void __iomem *, void *, unsigned long);
|
|
void (*read32r)(void __iomem *, void *, unsigned long);
|
|
void (*write8r)(void __iomem *, const void *, unsigned long);
|
|
void (*write16r)(void __iomem *, const void *, unsigned long);
|
|
void (*write32r)(void __iomem *, const void *, unsigned long);
|
|
};
|
|
|
|
/* Generic ioport ops. To be replaced later by specific dino/elroy/wax code */
|
|
|
|
#define ADDR2PORT(addr) ((unsigned long __force)(addr) & 0xffffff)
|
|
|
|
static unsigned int ioport_read8(void __iomem *addr)
|
|
{
|
|
return inb(ADDR2PORT(addr));
|
|
}
|
|
|
|
static unsigned int ioport_read16(void __iomem *addr)
|
|
{
|
|
return inw(ADDR2PORT(addr));
|
|
}
|
|
|
|
static unsigned int ioport_read32(void __iomem *addr)
|
|
{
|
|
return inl(ADDR2PORT(addr));
|
|
}
|
|
|
|
static void ioport_write8(u8 datum, void __iomem *addr)
|
|
{
|
|
outb(datum, ADDR2PORT(addr));
|
|
}
|
|
|
|
static void ioport_write16(u16 datum, void __iomem *addr)
|
|
{
|
|
outw(datum, ADDR2PORT(addr));
|
|
}
|
|
|
|
static void ioport_write32(u32 datum, void __iomem *addr)
|
|
{
|
|
outl(datum, ADDR2PORT(addr));
|
|
}
|
|
|
|
static void ioport_read8r(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
insb(ADDR2PORT(addr), dst, count);
|
|
}
|
|
|
|
static void ioport_read16r(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
insw(ADDR2PORT(addr), dst, count);
|
|
}
|
|
|
|
static void ioport_read32r(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
insl(ADDR2PORT(addr), dst, count);
|
|
}
|
|
|
|
static void ioport_write8r(void __iomem *addr, const void *s, unsigned long n)
|
|
{
|
|
outsb(ADDR2PORT(addr), s, n);
|
|
}
|
|
|
|
static void ioport_write16r(void __iomem *addr, const void *s, unsigned long n)
|
|
{
|
|
outsw(ADDR2PORT(addr), s, n);
|
|
}
|
|
|
|
static void ioport_write32r(void __iomem *addr, const void *s, unsigned long n)
|
|
{
|
|
outsl(ADDR2PORT(addr), s, n);
|
|
}
|
|
|
|
static const struct iomap_ops ioport_ops = {
|
|
ioport_read8,
|
|
ioport_read16,
|
|
ioport_read16,
|
|
ioport_read32,
|
|
ioport_read32,
|
|
ioport_write8,
|
|
ioport_write16,
|
|
ioport_write16,
|
|
ioport_write32,
|
|
ioport_write32,
|
|
ioport_read8r,
|
|
ioport_read16r,
|
|
ioport_read32r,
|
|
ioport_write8r,
|
|
ioport_write16r,
|
|
ioport_write32r,
|
|
};
|
|
|
|
/* Legacy I/O memory ops */
|
|
|
|
static unsigned int iomem_read8(void __iomem *addr)
|
|
{
|
|
return readb(addr);
|
|
}
|
|
|
|
static unsigned int iomem_read16(void __iomem *addr)
|
|
{
|
|
return readw(addr);
|
|
}
|
|
|
|
static unsigned int iomem_read16be(void __iomem *addr)
|
|
{
|
|
return __raw_readw(addr);
|
|
}
|
|
|
|
static unsigned int iomem_read32(void __iomem *addr)
|
|
{
|
|
return readl(addr);
|
|
}
|
|
|
|
static unsigned int iomem_read32be(void __iomem *addr)
|
|
{
|
|
return __raw_readl(addr);
|
|
}
|
|
|
|
static void iomem_write8(u8 datum, void __iomem *addr)
|
|
{
|
|
writeb(datum, addr);
|
|
}
|
|
|
|
static void iomem_write16(u16 datum, void __iomem *addr)
|
|
{
|
|
writew(datum, addr);
|
|
}
|
|
|
|
static void iomem_write16be(u16 datum, void __iomem *addr)
|
|
{
|
|
__raw_writew(datum, addr);
|
|
}
|
|
|
|
static void iomem_write32(u32 datum, void __iomem *addr)
|
|
{
|
|
writel(datum, addr);
|
|
}
|
|
|
|
static void iomem_write32be(u32 datum, void __iomem *addr)
|
|
{
|
|
__raw_writel(datum, addr);
|
|
}
|
|
|
|
static void iomem_read8r(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
while (count--) {
|
|
*(u8 *)dst = __raw_readb(addr);
|
|
dst++;
|
|
}
|
|
}
|
|
|
|
static void iomem_read16r(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
while (count--) {
|
|
*(u16 *)dst = __raw_readw(addr);
|
|
dst += 2;
|
|
}
|
|
}
|
|
|
|
static void iomem_read32r(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
while (count--) {
|
|
*(u32 *)dst = __raw_readl(addr);
|
|
dst += 4;
|
|
}
|
|
}
|
|
|
|
static void iomem_write8r(void __iomem *addr, const void *s, unsigned long n)
|
|
{
|
|
while (n--) {
|
|
__raw_writeb(*(u8 *)s, addr);
|
|
s++;
|
|
}
|
|
}
|
|
|
|
static void iomem_write16r(void __iomem *addr, const void *s, unsigned long n)
|
|
{
|
|
while (n--) {
|
|
__raw_writew(*(u16 *)s, addr);
|
|
s += 2;
|
|
}
|
|
}
|
|
|
|
static void iomem_write32r(void __iomem *addr, const void *s, unsigned long n)
|
|
{
|
|
while (n--) {
|
|
__raw_writel(*(u32 *)s, addr);
|
|
s += 4;
|
|
}
|
|
}
|
|
|
|
static const struct iomap_ops iomem_ops = {
|
|
iomem_read8,
|
|
iomem_read16,
|
|
iomem_read16be,
|
|
iomem_read32,
|
|
iomem_read32be,
|
|
iomem_write8,
|
|
iomem_write16,
|
|
iomem_write16be,
|
|
iomem_write32,
|
|
iomem_write32be,
|
|
iomem_read8r,
|
|
iomem_read16r,
|
|
iomem_read32r,
|
|
iomem_write8r,
|
|
iomem_write16r,
|
|
iomem_write32r,
|
|
};
|
|
|
|
const struct iomap_ops *iomap_ops[8] = {
|
|
[0] = &ioport_ops,
|
|
[7] = &iomem_ops
|
|
};
|
|
|
|
|
|
unsigned int ioread8(void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr)))
|
|
return iomap_ops[ADDR_TO_REGION(addr)]->read8(addr);
|
|
return *((u8 *)addr);
|
|
}
|
|
|
|
unsigned int ioread16(void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr)))
|
|
return iomap_ops[ADDR_TO_REGION(addr)]->read16(addr);
|
|
return le16_to_cpup((u16 *)addr);
|
|
}
|
|
|
|
unsigned int ioread16be(void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr)))
|
|
return iomap_ops[ADDR_TO_REGION(addr)]->read16be(addr);
|
|
return *((u16 *)addr);
|
|
}
|
|
|
|
unsigned int ioread32(void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr)))
|
|
return iomap_ops[ADDR_TO_REGION(addr)]->read32(addr);
|
|
return le32_to_cpup((u32 *)addr);
|
|
}
|
|
|
|
unsigned int ioread32be(void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr)))
|
|
return iomap_ops[ADDR_TO_REGION(addr)]->read32be(addr);
|
|
return *((u32 *)addr);
|
|
}
|
|
|
|
void iowrite8(u8 datum, void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->write8(datum, addr);
|
|
} else {
|
|
*((u8 *)addr) = datum;
|
|
}
|
|
}
|
|
|
|
void iowrite16(u16 datum, void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->write16(datum, addr);
|
|
} else {
|
|
*((u16 *)addr) = cpu_to_le16(datum);
|
|
}
|
|
}
|
|
|
|
void iowrite16be(u16 datum, void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->write16be(datum, addr);
|
|
} else {
|
|
*((u16 *)addr) = datum;
|
|
}
|
|
}
|
|
|
|
void iowrite32(u32 datum, void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->write32(datum, addr);
|
|
} else {
|
|
*((u32 *)addr) = cpu_to_le32(datum);
|
|
}
|
|
}
|
|
|
|
void iowrite32be(u32 datum, void __iomem *addr)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->write32be(datum, addr);
|
|
} else {
|
|
*((u32 *)addr) = datum;
|
|
}
|
|
}
|
|
|
|
/* Repeating interfaces */
|
|
|
|
void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->read8r(addr, dst, count);
|
|
} else {
|
|
while (count--) {
|
|
*(u8 *)dst = *(u8 *)addr;
|
|
dst++;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->read16r(addr, dst, count);
|
|
} else {
|
|
while (count--) {
|
|
*(u16 *)dst = *(u16 *)addr;
|
|
dst += 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->read32r(addr, dst, count);
|
|
} else {
|
|
while (count--) {
|
|
*(u32 *)dst = *(u32 *)addr;
|
|
dst += 4;
|
|
}
|
|
}
|
|
}
|
|
|
|
void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->write8r(addr, src, count);
|
|
} else {
|
|
while (count--) {
|
|
*(u8 *)addr = *(u8 *)src;
|
|
src++;
|
|
}
|
|
}
|
|
}
|
|
|
|
void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->write16r(addr, src, count);
|
|
} else {
|
|
while (count--) {
|
|
*(u16 *)addr = *(u16 *)src;
|
|
src += 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
|
|
{
|
|
if (unlikely(INDIRECT_ADDR(addr))) {
|
|
iomap_ops[ADDR_TO_REGION(addr)]->write32r(addr, src, count);
|
|
} else {
|
|
while (count--) {
|
|
*(u32 *)addr = *(u32 *)src;
|
|
src += 4;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Mapping interfaces */
|
|
|
|
void __iomem *ioport_map(unsigned long port, unsigned int nr)
|
|
{
|
|
return (void __iomem *)(IOPORT_MAP_BASE | port);
|
|
}
|
|
|
|
void ioport_unmap(void __iomem *addr)
|
|
{
|
|
if (!INDIRECT_ADDR(addr)) {
|
|
iounmap(addr);
|
|
}
|
|
}
|
|
|
|
/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
|
|
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
|
|
{
|
|
unsigned long start = pci_resource_start(dev, bar);
|
|
unsigned long len = pci_resource_len(dev, bar);
|
|
unsigned long flags = pci_resource_flags(dev, bar);
|
|
|
|
if (!len || !start)
|
|
return NULL;
|
|
if (maxlen && len > maxlen)
|
|
len = maxlen;
|
|
if (flags & IORESOURCE_IO)
|
|
return ioport_map(start, len);
|
|
if (flags & IORESOURCE_MEM) {
|
|
if (flags & IORESOURCE_CACHEABLE)
|
|
return ioremap(start, len);
|
|
return ioremap_nocache(start, len);
|
|
}
|
|
/* What? */
|
|
return NULL;
|
|
}
|
|
|
|
void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
|
|
{
|
|
if (!INDIRECT_ADDR(addr)) {
|
|
iounmap(addr);
|
|
}
|
|
}
|
|
|
|
EXPORT_SYMBOL(ioread8);
|
|
EXPORT_SYMBOL(ioread16);
|
|
EXPORT_SYMBOL(ioread16be);
|
|
EXPORT_SYMBOL(ioread32);
|
|
EXPORT_SYMBOL(ioread32be);
|
|
EXPORT_SYMBOL(iowrite8);
|
|
EXPORT_SYMBOL(iowrite16);
|
|
EXPORT_SYMBOL(iowrite16be);
|
|
EXPORT_SYMBOL(iowrite32);
|
|
EXPORT_SYMBOL(iowrite32be);
|
|
EXPORT_SYMBOL(ioread8_rep);
|
|
EXPORT_SYMBOL(ioread16_rep);
|
|
EXPORT_SYMBOL(ioread32_rep);
|
|
EXPORT_SYMBOL(iowrite8_rep);
|
|
EXPORT_SYMBOL(iowrite16_rep);
|
|
EXPORT_SYMBOL(iowrite32_rep);
|
|
EXPORT_SYMBOL(ioport_map);
|
|
EXPORT_SYMBOL(ioport_unmap);
|
|
EXPORT_SYMBOL(pci_iomap);
|
|
EXPORT_SYMBOL(pci_iounmap);
|