summaryrefslogtreecommitdiff
path: root/arch/sparc/include/asm/msi.h
diff options
context:
space:
mode:
authorSam Ravnborg <sam@ravnborg.org>2008-07-27 21:00:59 (GMT)
committerSam Ravnborg <sam@ravnborg.org>2008-07-27 21:00:59 (GMT)
commita439fe51a1f8eb087c22dd24d69cebae4a3addac (patch)
treee32d1fa97a220ab598d8ab364205817c5bf2bd6f /arch/sparc/include/asm/msi.h
parent837b41b5de356aa67abb2cadb5eef3efc7776f91 (diff)
downloadlinux-fsl-qoriq-a439fe51a1f8eb087c22dd24d69cebae4a3addac.tar.xz
sparc, sparc64: use arch/sparc/include
The majority of this patch was created by the following script: *** ASM=arch/sparc/include/asm mkdir -p $ASM git mv include/asm-sparc64/ftrace.h $ASM git rm include/asm-sparc64/* git mv include/asm-sparc/* $ASM sed -ie 's/asm-sparc64/asm/g' $ASM/* sed -ie 's/asm-sparc/asm/g' $ASM/* *** The rest was an update of the top-level Makefile to use sparc for header files when sparc64 is being build. And a small fixlet to pick up the correct unistd.h from sparc64 code. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch/sparc/include/asm/msi.h')
-rw-r--r--arch/sparc/include/asm/msi.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/msi.h b/arch/sparc/include/asm/msi.h
new file mode 100644
index 0000000..724ca56
--- /dev/null
+++ b/arch/sparc/include/asm/msi.h
@@ -0,0 +1,31 @@
+/*
+ * msi.h: Defines specific to the MBus - Sbus - Interface.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
+ */
+
+#ifndef _SPARC_MSI_H
+#define _SPARC_MSI_H
+
+/*
+ * Locations of MSI Registers.
+ */
+#define MSI_MBUS_ARBEN 0xe0001008 /* MBus Arbiter Enable register */
+
+/*
+ * Useful bits in the MSI Registers.
+ */
+#define MSI_ASYNC_MODE 0x80000000 /* Operate the MSI asynchronously */
+
+
+static inline void msi_set_sync(void)
+{
+ __asm__ __volatile__ ("lda [%0] %1, %%g3\n\t"
+ "andn %%g3, %2, %%g3\n\t"
+ "sta %%g3, [%0] %1\n\t" : :
+ "r" (MSI_MBUS_ARBEN),
+ "i" (ASI_M_CTL), "r" (MSI_ASYNC_MODE) : "g3");
+}
+
+#endif /* !(_SPARC_MSI_H) */