Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/sparc/include/asm/vaddrs.h b/arch/sparc/include/asm/vaddrs.h
new file mode 100644
index 0000000000..4fec0341e2
--- /dev/null
+++ b/arch/sparc/include/asm/vaddrs.h
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SPARC_VADDRS_H
+#define _SPARC_VADDRS_H
+
+#include <asm/head.h>
+
+/*
+ * asm/vaddrs.h:  Here we define the virtual addresses at
+ *                      which important things will be mapped.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 2000 Anton Blanchard (anton@samba.org)
+ */
+
+#define SRMMU_MAXMEM		0x0c000000
+
+#define SRMMU_NOCACHE_VADDR	(KERNBASE + SRMMU_MAXMEM)
+				/* = 0x0fc000000 */
+/* XXX Empiricals - this needs to go away - KMW */
+#define SRMMU_MIN_NOCACHE_PAGES (550)
+#define SRMMU_MAX_NOCACHE_PAGES	(1280)
+
+/* The following constant is used in mm/srmmu.c::srmmu_nocache_calcsize()
+ * to determine the amount of memory that will be reserved as nocache:
+ *
+ * 256 pages will be taken as nocache per each
+ * SRMMU_NOCACHE_ALCRATIO MB of system memory.
+ *
+ * limits enforced:	nocache minimum = 256 pages
+ *			nocache maximum = 1280 pages
+ */
+#define SRMMU_NOCACHE_ALCRATIO	64	/* 256 pages per 64MB of system RAM */
+
+#ifndef __ASSEMBLY__
+#include <asm/kmap_size.h>
+
+enum fixed_addresses {
+	FIX_HOLE,
+#ifdef CONFIG_HIGHMEM
+	FIX_KMAP_BEGIN,
+	FIX_KMAP_END = (KM_MAX_IDX * NR_CPUS),
+#endif
+	__end_of_fixed_addresses
+};
+#endif
+
+/* Leave one empty page between IO pages at 0xfd000000 and
+ * the top of the fixmap.
+ */
+#define FIXADDR_TOP		(0xfcfff000UL)
+#define FIXADDR_SIZE		((FIX_KMAP_END + 1) << PAGE_SHIFT)
+#define FIXADDR_START		(FIXADDR_TOP - FIXADDR_SIZE)
+
+#define __fix_to_virt(x)        (FIXADDR_TOP - ((x) << PAGE_SHIFT))
+
+#define SUN4M_IOBASE_VADDR	0xfd000000 /* Base for mapping pages */
+#define IOBASE_VADDR		0xfe000000
+#define IOBASE_END		0xfe600000
+
+#define KADB_DEBUGGER_BEGVM	0xffc00000 /* Where kern debugger is in virt-mem */
+#define KADB_DEBUGGER_ENDVM	0xffd00000
+#define DEBUG_FIRSTVADDR	KADB_DEBUGGER_BEGVM
+#define DEBUG_LASTVADDR		KADB_DEBUGGER_ENDVM
+
+#define LINUX_OPPROM_BEGVM	0xffd00000
+#define LINUX_OPPROM_ENDVM	0xfff00000
+
+#define DVMA_VADDR		0xfff00000 /* Base area of the DVMA on suns */
+#define DVMA_END		0xfffc0000
+
+#endif /* !(_SPARC_VADDRS_H) */