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Commit 29ef8295 authored by Helge Deller's avatar Helge Deller Committed by Kyle McMartin
Browse files

[PARISC] Enable ioremap functionality unconditionally 



Enable CONFIG_HPPA_IOREMAP by default and remove all now unnecessary code.

Signed-off-by: default avatarHelge Deller <deller@parisc-linux.org>
Signed-off-by: default avatarKyle McMartin <kyle@parisc-linux.org>
parent 857600c7

arch/parisc/Kconfig

+0 −11
Original line number Diff line number Diff line
@@ -138,17 +138,6 @@ 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---

arch/parisc/mm/ioremap.c

+2 −14
Original line number Diff line number Diff line
@@ -72,7 +72,6 @@ remap_area_pmd(pmd_t *pmd, unsigned long address, unsigned long size, 
	return 0;

}



#ifdef CONFIG_HPPA_IOREMAP

static int 

remap_area_pages(unsigned long address, unsigned long phys_addr,

		 unsigned long size, unsigned long flags)
@@ -114,7 +113,6 @@ remap_area_pages(unsigned long address, unsigned long phys_addr, 


	return error;

}

#endif /* CONFIG_HPPA_IOREMAP */



#ifdef CONFIG_DEBUG_IOREMAP

static unsigned long last = 0;
@@ -154,21 +152,16 @@ EXPORT_SYMBOL(__raw_bad_addr); 
 */

void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)

{

#if !defined(CONFIG_HPPA_IOREMAP)

#ifdef CONFIG_EISA

	#error FIXME.

	unsigned long end = phys_addr + size - 1;

	/* Support EISA addresses */

	if ((phys_addr >= 0x00080000 && end < 0x000fffff)

			|| (phys_addr >= 0x00500000 && end < 0x03bfffff)) {

		phys_addr |= 0xfc000000;

	}



#ifdef CONFIG_DEBUG_IOREMAP

	return (void __iomem *)(phys_addr - (0x1UL << NYBBLE_SHIFT));

#else

	return (void __iomem *)phys_addr;

#endif



#else

	void *addr;

	struct vm_struct *area;

	unsigned long offset, last_addr;
@@ -216,15 +209,10 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l 
	}



	return (void __iomem *) (offset + (char *)addr);

#endif

}



void iounmap(void __iomem *addr)

{

#ifdef CONFIG_HPPA_IOREMAP

	if (addr > high_memory)

		return vfree((void *) (PAGE_MASK & (unsigned long __force) addr));

#else

	return;

#endif

}

include/asm-parisc/io.h

+1 −57
Original line number Diff line number Diff line
@@ -176,12 +176,7 @@ extern inline void * ioremap_nocache(unsigned long offset, unsigned long size) 


extern void iounmap(void __iomem *addr);



/*

 * 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.

 */

#ifdef CONFIG_HPPA_IOREMAP



static inline unsigned char __raw_readb(const volatile void __iomem *addr)

{

	return (*(volatile unsigned char __force *) (addr));
@@ -215,57 +210,6 @@ static inline void __raw_writeq(unsigned long long b, volatile void __iomem *add 
{

	*(volatile unsigned long long __force *) addr = b;

}

#else /* !CONFIG_HPPA_IOREMAP */

static inline unsigned char __raw_readb(const volatile void __iomem *addr)

{

	__raw_check_addr(addr);



	return gsc_readb((unsigned long) addr);

}

static inline unsigned short __raw_readw(const volatile void __iomem *addr)

{

	__raw_check_addr(addr);



	return gsc_readw((unsigned long) addr);

}

static inline unsigned int __raw_readl(const volatile void __iomem *addr)

{

	__raw_check_addr(addr);



	return gsc_readl((unsigned long) addr);

}

static inline unsigned long long __raw_readq(const volatile void __iomem *addr)

{

	__raw_check_addr(addr);



	return gsc_readq((unsigned long) addr);

}



static inline void __raw_writeb(unsigned char b, volatile void __iomem *addr)

{

	__raw_check_addr(addr);



	gsc_writeb(b, (unsigned long) addr);

}

static inline void __raw_writew(unsigned short b, volatile void __iomem *addr)

{

	__raw_check_addr(addr);



	gsc_writew(b, (unsigned long) addr);

}

static inline void __raw_writel(unsigned int b, volatile void __iomem *addr)

{

	__raw_check_addr(addr);



	gsc_writel(b, (unsigned long) addr);

}

static inline void __raw_writeq(unsigned long long b, volatile void __iomem *addr)

{

	__raw_check_addr(addr);



	gsc_writeq(b, (unsigned long) addr);

}

#endif /* !CONFIG_HPPA_IOREMAP */



/* readb can never be const, so use __fswab instead of le*_to_cpu */

#define readb(addr) __raw_readb(addr)