[PARISC] Enable ioremap functionality unconditionally

Enable CONFIG_HPPA_IOREMAP by default and remove all now unnecessary code.

Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

arch/parisc/Kconfig

@@ -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

@@ -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

@@ -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)