patch-2.3.35 linux/include/asm-sparc64/iommu.h

• Lines: 59
• Date: Mon Dec 20 22:05:52 1999
• Orig file: v2.3.34/linux/include/asm-sparc64/iommu.h
• Orig date: Fri Sep 10 23:57:37 1999

diff -u --recursive --new-file v2.3.34/linux/include/asm-sparc64/iommu.h linux/include/asm-sparc64/iommu.h
@@ -1,40 +1,12 @@
-/* iommu.h: Definitions for the sun5 IOMMU.
+/* $Id: iommu.h,v 1.9 1999/09/21 14:39:39 davem Exp $
+ * iommu.h: Definitions for the sun5 IOMMU.
  *
- * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996, 1999 David S. Miller (davem@caip.rutgers.edu)
  */
 #ifndef _SPARC64_IOMMU_H
 #define _SPARC64_IOMMU_H
 
-#include <linux/spinlock.h>
-#include <asm/page.h>
-#include <asm/sysio.h>
-
-/* The iommu handles all virtual to physical address translations
- * that occur between the SYSIO and physical memory.  Access by
- * the cpu to IO registers and similar go over the UPA so are
- * translated by the on chip TLB's.  The iommu and the TLB do
- * not need to have the same translations at all, in fact most
- * of the time the translations they handle are a disjoint set.
- * Basically the iommu handles all SYSIO dvma translations.
- */
-
-/* The IOMMU register set. */
-#define IOMMU_CTRL_IMPL     0xf000000000000000 /* Implementation                */
-#define IOMMU_CTRL_VERS     0x0f00000000000000 /* Version                       */
-#define IOMMU_CTRL_TSBSZ    0x0000000000070000 /* TSB Size                      */
-#define IOMMU_TSBSZ_1K      0x0000000000000000 /* TSB Table 1024 8-byte entries */
-#define IOMMU_TSBSZ_2K      0x0000000000010000 /* TSB Table 2048 8-byte entries */
-#define IOMMU_TSBSZ_4K      0x0000000000020000 /* TSB Table 4096 8-byte entries */
-#define IOMMU_TSBSZ_8K      0x0000000000030000 /* TSB Table 8192 8-byte entries */
-#define IOMMU_TSBSZ_16K     0x0000000000040000 /* TSB Table 16k 8-byte entries  */
-#define IOMMU_TSBSZ_32K     0x0000000000050000 /* TSB Table 32k 8-byte entries  */
-#define IOMMU_TSBSZ_64K     0x0000000000060000 /* TSB Table 64k 8-byte entries  */
-#define IOMMU_TSBSZ_128K    0x0000000000070000 /* TSB Table 128k 8-byte entries */
-#define IOMMU_CTRL_TBWSZ    0x0000000000000004 /* Assumed page size, 0=8k 1=64k */
-#define IOMMU_CTRL_DENAB    0x0000000000000002 /* Diagnostic mode enable        */
-#define IOMMU_CTRL_ENAB     0x0000000000000001 /* IOMMU Enable                  */
-
-/* The format of an iopte in the page tables, we only use 64k pages. */
+/* The format of an iopte in the page tables. */
 #define IOPTE_VALID         0x8000000000000000 /* IOPTE is valid                   */
 #define IOPTE_64K           0x2000000000000000 /* IOPTE is for 64k page            */
 #define IOPTE_STBUF         0x1000000000000000 /* DVMA can use streaming buffer    */
@@ -43,13 +15,5 @@
 #define IOPTE_PAGE          0x00007fffffffe000 /* Physical page number (PA[40:13]) */
 #define IOPTE_CACHE         0x0000000000000010 /* Cached (in UPA E-cache)          */
 #define IOPTE_WRITE         0x0000000000000002 /* Writeable                        */
-
-struct iommu_struct {
-	struct sysio_regs	*sysio_regs;
-	iopte_t			*page_table;
-	volatile unsigned int	flushflag;
-	unsigned int		strbuf_enabled;
-	spinlock_t		iommu_lock;
-};
 
 #endif /* !(_SPARC_IOMMU_H) */