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Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

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This commit is contained in:
Linus Torvalds 2006-02-28 09:14:09 -08:00
commit b9756c047c
3 changed files with 30 additions and 6 deletions
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2
arch/mips/lib/iomap.c
View File

@ -63,7 +63,7 @@ void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
return ioport_map(start, len);
if (flags & IORESOURCE_MEM) {
if (flags & IORESOURCE_CACHEABLE)
return ioremap_cacheable_cow(start, len);
return ioremap_cachable(start, len);
return ioremap_nocache(start, len);
}

16
arch/mips/mm/c-r4k.c
View File

@ -235,7 +235,9 @@ static inline void r4k_blast_scache_page_setup(void)
{
unsigned long sc_lsize = cpu_scache_line_size();
if (sc_lsize == 16)
if (scache_size == 0)
r4k_blast_scache_page = (void *)no_sc_noop;
else if (sc_lsize == 16)
r4k_blast_scache_page = blast_scache16_page;
else if (sc_lsize == 32)
r4k_blast_scache_page = blast_scache32_page;
@ -251,7 +253,9 @@ static inline void r4k_blast_scache_page_indexed_setup(void)
{
unsigned long sc_lsize = cpu_scache_line_size();
if (sc_lsize == 16)
if (scache_size == 0)
r4k_blast_scache_page_indexed = (void *)no_sc_noop;
else if (sc_lsize == 16)
r4k_blast_scache_page_indexed = blast_scache16_page_indexed;
else if (sc_lsize == 32)
r4k_blast_scache_page_indexed = blast_scache32_page_indexed;
@ -267,7 +271,9 @@ static inline void r4k_blast_scache_setup(void)
{
unsigned long sc_lsize = cpu_scache_line_size();
if (sc_lsize == 16)
if (scache_size == 0)
r4k_blast_scache = (void *)no_sc_noop;
else if (sc_lsize == 16)
r4k_blast_scache = blast_scache16;
else if (sc_lsize == 32)
r4k_blast_scache = blast_scache32;
@ -482,7 +488,7 @@ static inline void local_r4k_flush_icache_range(void *args)
protected_blast_dcache_range(start, end);
}
if (!cpu_icache_snoops_remote_store) {
if (!cpu_icache_snoops_remote_store && scache_size) {
if (end - start > scache_size)
r4k_blast_scache();
else
@ -651,7 +657,7 @@ static void local_r4k_flush_cache_sigtramp(void * arg)
R4600_HIT_CACHEOP_WAR_IMPL;
protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
if (!cpu_icache_snoops_remote_store)
if (!cpu_icache_snoops_remote_store && scache_size)
protected_writeback_scache_line(addr & ~(sc_lsize - 1));
protected_flush_icache_line(addr & ~(ic_lsize - 1));
if (MIPS4K_ICACHE_REFILL_WAR) {

18
include/asm-mips/io.h
View File

@ -282,6 +282,24 @@ static inline void __iomem * __ioremap_mode(phys_t offset, unsigned long size,
#define ioremap_nocache(offset, size) \
__ioremap_mode((offset), (size), _CACHE_UNCACHED)
/*
* ioremap_cachable - map bus memory into CPU space
* @offset: bus address of the memory
* @size: size of the resource to map
*
* ioremap_nocache performs a platform specific sequence of operations to
* make bus memory CPU accessible via the readb/readw/readl/writeb/
* writew/writel functions and the other mmio helpers. The returned
* address is not guaranteed to be usable directly as a virtual
* address.
*
* This version of ioremap ensures that the memory is marked cachable by
* the CPU. Also enables full write-combining. Useful for some
* memory-like regions on I/O busses.
*/
#define ioremap_cachable(offset, size) \
__ioremap_mode((offset), (size), PAGE_CACHABLE_DEFAULT)
/*
* These two are MIPS specific ioremap variant. ioremap_cacheable_cow
* requests a cachable mapping, ioremap_uncached_accelerated requests a