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author | Helge Deller <deller@parisc-linux.org> | 2006-03-07 14:12:13 -0700 |
---|---|---|
committer | Kyle McMartin <kyle@hera.kernel.org> | 2006-03-30 17:48:46 +0000 |
commit | b8ce0aadcdebbaf5ec013c57e2a0803060817bcc (patch) | |
tree | c910b16935911a5cfaee98b5e6040fe6e1918fd9 | |
parent | b31059f7634931a06f6811247ae9217d1a833a46 (diff) | |
download | kernel_samsung_espresso10-b8ce0aadcdebbaf5ec013c57e2a0803060817bcc.zip kernel_samsung_espresso10-b8ce0aadcdebbaf5ec013c57e2a0803060817bcc.tar.gz kernel_samsung_espresso10-b8ce0aadcdebbaf5ec013c57e2a0803060817bcc.tar.bz2 |
[PARISC] Add CONFIG_HPPA_IOREMAP to conditionally enable ioremap
Instead of making it a #define in asm/io.h, allow user to select
to turn on IOREMAP from the config menu.
Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
-rw-r--r-- | arch/parisc/Kconfig | 11 | ||||
-rw-r--r-- | arch/parisc/mm/ioremap.c | 13 | ||||
-rw-r--r-- | include/asm-parisc/io.h | 16 |
3 files changed, 22 insertions, 18 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 6b3c509..fc5755d 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -138,6 +138,17 @@ config 64BIT enable this option otherwise. The 64bit kernel is significantly bigger and slower than the 32bit one. +config HPPA_IOREMAP + bool "Enable IOREMAP functionality (EXPERIMENTAL)" + depends on EXPERIMENTAL + default n + help + Enable this option if you want to enable real IOREMAPPING on PA-RISC. + Currently we just "simulate" I/O remapping, and enabling this option + will just crash your machine. + + Say N here, unless you are a real PA-RISC Linux kernel hacker. + config SMP bool "Symmetric multi-processing support" ---help--- diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c index edd9a95..0287721 100644 --- a/arch/parisc/mm/ioremap.c +++ b/arch/parisc/mm/ioremap.c @@ -72,7 +72,7 @@ remap_area_pmd(pmd_t *pmd, unsigned long address, unsigned long size, return 0; } -#if USE_HPPA_IOREMAP +#ifdef CONFIG_HPPA_IOREMAP static int remap_area_pages(unsigned long address, unsigned long phys_addr, unsigned long size, unsigned long flags) @@ -114,7 +114,7 @@ remap_area_pages(unsigned long address, unsigned long phys_addr, return error; } -#endif /* USE_HPPA_IOREMAP */ +#endif /* CONFIG_HPPA_IOREMAP */ #ifdef CONFIG_DEBUG_IOREMAP static unsigned long last = 0; @@ -154,8 +154,7 @@ EXPORT_SYMBOL(__raw_bad_addr); */ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags) { -#if !(USE_HPPA_IOREMAP) - +#if !defined(CONFIG_HPPA_IOREMAP) unsigned long end = phys_addr + size - 1; /* Support EISA addresses */ if ((phys_addr >= 0x00080000 && end < 0x000fffff) @@ -222,10 +221,10 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l void iounmap(void __iomem *addr) { -#if !(USE_HPPA_IOREMAP) - return; -#else +#ifdef CONFIG_HPPA_IOREMAP if (addr > high_memory) return vfree((void *) (PAGE_MASK & (unsigned long __force) addr)); +#else + return; #endif } diff --git a/include/asm-parisc/io.h b/include/asm-parisc/io.h index be0c723..2fb2532 100644 --- a/include/asm-parisc/io.h +++ b/include/asm-parisc/io.h @@ -26,11 +26,7 @@ extern unsigned long parisc_vmerge_max_size; */ #ifdef CONFIG_DEBUG_IOREMAP -#ifdef CONFIG_64BIT -#define NYBBLE_SHIFT 60 -#else -#define NYBBLE_SHIFT 28 -#endif +#define NYBBLE_SHIFT (BITS_PER_LONG - 4) extern void gsc_bad_addr(unsigned long addr); extern void __raw_bad_addr(const volatile void __iomem *addr); #define gsc_check_addr(addr) \ @@ -181,13 +177,11 @@ extern inline void * ioremap_nocache(unsigned long offset, unsigned long size) extern void iounmap(void __iomem *addr); /* - * USE_HPPA_IOREMAP is the magic flag to enable or disable real ioremap() + * CONFIG_HPPA_IOREMAP is the magic flag to enable or disable real ioremap() * functionality. It's currently disabled because it may not work on some * machines. */ -#define USE_HPPA_IOREMAP 0 - -#if USE_HPPA_IOREMAP +#ifdef CONFIG_HPPA_IOREMAP static inline unsigned char __raw_readb(const volatile void __iomem *addr) { return (*(volatile unsigned char __force *) (addr)); @@ -221,7 +215,7 @@ static inline void __raw_writeq(unsigned long long b, volatile void __iomem *add { *(volatile unsigned long long __force *) addr = b; } -#else /* !USE_HPPA_IOREMAP */ +#else /* !CONFIG_HPPA_IOREMAP */ static inline unsigned char __raw_readb(const volatile void __iomem *addr) { __raw_check_addr(addr); @@ -271,7 +265,7 @@ static inline void __raw_writeq(unsigned long long b, volatile void __iomem *add gsc_writeq(b, (unsigned long) addr); } -#endif /* !USE_HPPA_IOREMAP */ +#endif /* !CONFIG_HPPA_IOREMAP */ /* readb can never be const, so use __fswab instead of le*_to_cpu */ #define readb(addr) __raw_readb(addr) |