patch-2.3.35 linux/arch/sparc64/kernel/ioport.c

• Lines: 108
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.34/linux/arch/sparc64/kernel/ioport.c
• Orig date: Tue Aug 4 16:03:35 1998

diff -u --recursive --new-file v2.3.34/linux/arch/sparc64/kernel/ioport.c linux/arch/sparc64/kernel/ioport.c
@@ -1,107 +0,0 @@
-/* $Id: ioport.c,v 1.14 1998/05/11 06:23:36 davem Exp $
- * ioport.c:  Simple io mapping allocator.
- *
- * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
- */
-
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-
-#include <asm/io.h>
-#include <asm/vaddrs.h>
-#include <asm/oplib.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-
-/* This points to the next to use virtual memory for io mappings */
-static unsigned long dvma_next_free   = DVMA_VADDR;
-
-extern void mmu_map_dma_area(unsigned long addr, int len, __u32 *dvma_addr);
-
-/*
- * sparc_alloc_io:
- * Map and allocates an obio device.
- * Implements a simple linear allocator, you can force the function
- * to use your own mapping, but in practice this should not be used.
- *
- * Input:
- *  address: Physical address to map
- *  virtual: if non zero, specifies a fixed virtual address where
- *           the mapping should take place, not supported on Ultra
- *           and this feature is scheduled to be removed as nobody
- *           uses it. -DaveM
- *  len:     the length of the mapping
- *  bus_type: Optional high word of physical address.
- *
- * Returns:
- *  The virtual address where the mapping actually took place.
- */
-
-void *sparc_alloc_io (u32 address, void *virtual, int len, char *name,
-		      u32 bus_type, int rdonly)
-{
-	unsigned long addr = ((unsigned long)address) + (((unsigned long)bus_type)<<32);
-	unsigned long vaddr = (unsigned long) __va(addr);
-
-	if(virtual)
-		panic("sparc_alloc_io: Fixed virtual mappings unsupported on Ultra.");
-
-	if(!check_region(vaddr, len))
-		request_region(vaddr, len, name);
-
-	return (void *) vaddr;
-}
-
-void sparc_free_io (void *virtual, int len)
-{
-	unsigned long vaddr = (unsigned long) virtual & PAGE_MASK;
-	unsigned long plen = (((unsigned long)virtual & ~PAGE_MASK) +
-			      len + PAGE_SIZE-1) & PAGE_MASK;
-	release_region(vaddr, plen);
-}
-
-/* Does DVMA allocations with PAGE_SIZE granularity.  How this basically
- * works is that the ESP chip can do DVMA transfers at ANY address with
- * certain size and boundary restrictions.  But other devices that are
- * attached to it and would like to do DVMA have to set things up in
- * a special way, if the DVMA sees a device attached to it transfer data
- * at addresses above DVMA_VADDR it will grab them, this way it does not
- * now have to know the peculiarities of where to read the Lance data
- * from. (for example)
- *
- * Returns CPU visible address for the buffer returned, dvma_addr is
- * set to the DVMA visible address.
- */
-void *sparc_dvma_malloc (int len, char *name, __u32 *dvma_addr)
-{
-	unsigned long vaddr, base_address;
-
-	vaddr = dvma_next_free;
-	if(check_region (vaddr, len)) {
-		prom_printf("alloc_dma: 0x%lx is already in use\n", vaddr);
-		prom_halt();
-	}
-	if(vaddr + len > (DVMA_VADDR + DVMA_LEN)) {
-		prom_printf("alloc_dvma: out of dvma memory\n");
-		prom_halt();
-	}
-
-	/* Basically these can be mapped just like any old
-	 * IO pages, cacheable bit off, etc.  The physical
-	 * pages are now mapped dynamically to save space.
-	 */
-	base_address = vaddr;
-	mmu_map_dma_area(base_address, len, dvma_addr);
-
-	/* Assign the memory area. */
-	dvma_next_free = PAGE_ALIGN(dvma_next_free+len);
-
-	request_region(base_address, len, name);
-
-	return (void *) base_address;
-}