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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-i386/mca.h
downloadlinux-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
linux-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-i386/mca.h')
-rw-r--r--include/asm-i386/mca.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/include/asm-i386/mca.h b/include/asm-i386/mca.h
new file mode 100644
index 000000000000..09adf2eac4dc
--- /dev/null
+++ b/include/asm-i386/mca.h
@@ -0,0 +1,43 @@
+/* -*- mode: c; c-basic-offset: 8 -*- */
+
+/* Platform specific MCA defines */
+#ifndef _ASM_MCA_H
+#define _ASM_MCA_H
+
+/* Maximal number of MCA slots - actually, some machines have less, but
+ * they all have sufficient number of POS registers to cover 8.
+ */
+#define MCA_MAX_SLOT_NR 8
+
+/* Most machines have only one MCA bus. The only multiple bus machines
+ * I know have at most two */
+#define MAX_MCA_BUSSES 2
+
+#define MCA_PRIMARY_BUS 0
+#define MCA_SECONDARY_BUS 1
+
+/* Dummy slot numbers on primary MCA for integrated functions */
+#define MCA_INTEGSCSI (MCA_MAX_SLOT_NR)
+#define MCA_INTEGVIDEO (MCA_MAX_SLOT_NR+1)
+#define MCA_MOTHERBOARD (MCA_MAX_SLOT_NR+2)
+
+/* Dummy POS values for integrated functions */
+#define MCA_DUMMY_POS_START 0x10000
+#define MCA_INTEGSCSI_POS (MCA_DUMMY_POS_START+1)
+#define MCA_INTEGVIDEO_POS (MCA_DUMMY_POS_START+2)
+#define MCA_MOTHERBOARD_POS (MCA_DUMMY_POS_START+3)
+
+/* MCA registers */
+
+#define MCA_MOTHERBOARD_SETUP_REG 0x94
+#define MCA_ADAPTER_SETUP_REG 0x96
+#define MCA_POS_REG(n) (0x100+(n))
+
+#define MCA_ENABLED 0x01 /* POS 2, set if adapter enabled */
+
+/* Max number of adapters, including both slots and various integrated
+ * things.
+ */
+#define MCA_NUMADAPTERS (MCA_MAX_SLOT_NR+3)
+
+#endif