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Diffstat (limited to 'include/asm-m68k/mac_oss.h')
-rw-r--r--include/asm-m68k/mac_oss.h94
1 files changed, 94 insertions, 0 deletions
diff --git a/include/asm-m68k/mac_oss.h b/include/asm-m68k/mac_oss.h
new file mode 100644
index 000000000000..7644a639cd6c
--- /dev/null
+++ b/include/asm-m68k/mac_oss.h
@@ -0,0 +1,94 @@
+/*
+ * OSS
+ *
+ * This is used in place of VIA2 on the IIfx.
+ */
+
+#define OSS_BASE (0x50f1a000)
+
+/*
+ * Interrupt level offsets for mac_oss->irq_level
+ */
+
+#define OSS_NUBUS0 0
+#define OSS_NUBUS1 1
+#define OSS_NUBUS2 2
+#define OSS_NUBUS3 3
+#define OSS_NUBUS4 4
+#define OSS_NUBUS5 5
+#define OSS_IOPISM 6
+#define OSS_IOPSCC 7
+#define OSS_SOUND 8
+#define OSS_SCSI 9
+#define OSS_60HZ 10
+#define OSS_VIA1 11
+#define OSS_UNUSED1 12
+#define OSS_UNUSED2 13
+#define OSS_PARITY 14
+#define OSS_UNUSED3 15
+
+#define OSS_NUM_SOURCES 16
+
+/*
+ * Pending interrupt bits in mac_oss->irq_pending
+ */
+
+#define OSS_IP_NUBUS0 0x0001
+#define OSS_IP_NUBUS1 0x0002
+#define OSS_IP_NUBUS2 0x0004
+#define OSS_IP_NUBUS3 0x0008
+#define OSS_IP_NUBUS4 0x0010
+#define OSS_IP_NUBUS5 0x0020
+#define OSS_IP_IOPISM 0x0040
+#define OSS_IP_IOPSCC 0x0080
+#define OSS_IP_SOUND 0x0100
+#define OSS_IP_SCSI 0x0200
+#define OSS_IP_60HZ 0x0400
+#define OSS_IP_VIA1 0x0800
+#define OSS_IP_UNUSED1 0x1000
+#define OSS_IP_UNUSED2 0x2000
+#define OSS_IP_PARITY 0x4000
+#define OSS_IP_UNUSED3 0x8000
+
+#define OSS_IP_NUBUS (OSS_IP_NUBUS0|OSS_IP_NUBUS1|OSS_IP_NUBUS2|OSS_IP_NUBUS3|OSS_IP_NUBUS4|OSS_IP_NUBUS5)
+
+/*
+ * Rom Control Register
+ */
+
+#define OSS_POWEROFF 0x80
+
+/*
+ * OSS Interrupt levels for various sub-systems
+ *
+ * This mapping is layed out with two things in mind: first, we try to keep
+ * things on their own levels to avoid having to do double-dispatches. Second,
+ * the levels match as closely as possible the alternate IRQ mapping mode (aka
+ * "A/UX mode") available on some VIA machines.
+ */
+
+#define OSS_IRQLEV_DISABLED 0
+#define OSS_IRQLEV_IOPISM 1 /* ADB? */
+#define OSS_IRQLEV_SCSI 2
+#define OSS_IRQLEV_NUBUS 3 /* keep this on its own level */
+#define OSS_IRQLEV_IOPSCC 4 /* matches VIA alternate mapping */
+#define OSS_IRQLEV_SOUND 5 /* matches VIA alternate mapping */
+#define OSS_IRQLEV_60HZ 6 /* matches VIA alternate mapping */
+#define OSS_IRQLEV_VIA1 6 /* matches VIA alternate mapping */
+#define OSS_IRQLEV_PARITY 7 /* matches VIA alternate mapping */
+
+#ifndef __ASSEMBLY__
+
+struct mac_oss {
+ __u8 irq_level[0x10]; /* [0x000-0x00f] Interrupt levels */
+ __u8 padding0[0x1F2]; /* [0x010-0x201] IO space filler */
+ __u16 irq_pending; /* [0x202-0x203] pending interrupts bits */
+ __u8 rom_ctrl; /* [0x204-0x204] ROM cntl reg (for poweroff) */
+ __u8 padding1[0x2]; /* [0x205-0x206] currently unused by A/UX */
+ __u8 ack_60hz; /* [0x207-0x207] 60 Hz ack. */
+};
+
+extern volatile struct mac_oss *oss;
+extern int oss_present;
+
+#endif /* __ASSEMBLY__ */