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__ */