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!
diff --git a/include/asm-m68k/macints.h b/include/asm-m68k/macints.h
new file mode 100644
index 0000000..fd8c3a9
--- /dev/null
+++ b/include/asm-m68k/macints.h
@@ -0,0 +1,169 @@
+/*
+** macints.h -- Macintosh Linux interrupt handling structs and prototypes
+**
+** Copyright 1997 by Michael Schmitz
+**
+** This file is subject to the terms and conditions of the GNU General Public
+** License. See the file COPYING in the main directory of this archive
+** for more details.
+**
+*/
+
+#ifndef _ASM_MACINTS_H_
+#define _ASM_MACINTS_H_
+
+#include <asm/irq.h>
+
+/* Setting this prints debugging info for unclaimed interrupts */
+
+#define DEBUG_SPURIOUS
+
+/* Setting this prints debugging info on each autovector interrupt */
+
+/* #define DEBUG_IRQS */
+
+/* Setting this prints debugging info on each Nubus interrupt */
+
+/* #define DEBUG_NUBUS_INT */
+
+/* Setting this prints debugging info on irqs as they enabled and disabled. */
+
+/* #define DEBUG_IRQUSE */
+
+/*
+ * Base IRQ number for all Mac68K interrupt sources. Each source
+ * has eight indexes (base -> base+7).
+ */
+
+#define VIA1_SOURCE_BASE 8
+#define VIA2_SOURCE_BASE 16
+#define MAC_SCC_SOURCE_BASE 24
+#define PSC3_SOURCE_BASE 24
+#define PSC4_SOURCE_BASE 32
+#define PSC5_SOURCE_BASE 40
+#define PSC6_SOURCE_BASE 48
+#define NUBUS_SOURCE_BASE 56
+#define BABOON_SOURCE_BASE 64
+
+/*
+ * Maximum IRQ number is BABOON_SOURCE_BASE + 7,
+ * giving us IRQs up through 71
+ */
+
+#define NUM_MAC_SOURCES 72
+
+/*
+ * clean way to separate IRQ into its source and index
+ */
+
+#define IRQ_SRC(irq) (irq >> 3)
+#define IRQ_IDX(irq) (irq & 7)
+
+#define IRQ_SPURIOUS (0)
+
+/* auto-vector interrupts */
+#define IRQ_AUTO_1 (1)
+#define IRQ_AUTO_2 (2)
+#define IRQ_AUTO_3 (3)
+#define IRQ_AUTO_4 (4)
+#define IRQ_AUTO_5 (5)
+#define IRQ_AUTO_6 (6)
+#define IRQ_AUTO_7 (7)
+
+/* VIA1 interrupts */
+#define IRQ_VIA1_0 (8) /* one second int. */
+#define IRQ_VIA1_1 (9) /* VBlank int. */
+#define IRQ_MAC_VBL IRQ_VIA1_1
+#define IRQ_VIA1_2 (10) /* ADB SR shifts complete */
+#define IRQ_MAC_ADB IRQ_VIA1_2
+#define IRQ_MAC_ADB_SR IRQ_VIA1_2
+#define IRQ_VIA1_3 (11) /* ADB SR CB2 ?? */
+#define IRQ_MAC_ADB_SD IRQ_VIA1_3
+#define IRQ_VIA1_4 (12) /* ADB SR ext. clock pulse */
+#define IRQ_MAC_ADB_CL IRQ_VIA1_4
+#define IRQ_VIA1_5 (13)
+#define IRQ_MAC_TIMER_2 IRQ_VIA1_5
+#define IRQ_VIA1_6 (14)
+#define IRQ_MAC_TIMER_1 IRQ_VIA1_6
+#define IRQ_VIA1_7 (15)
+
+/* VIA2/RBV interrupts */
+#define IRQ_VIA2_0 (16)
+#define IRQ_MAC_SCSIDRQ IRQ_VIA2_0
+#define IRQ_VIA2_1 (17)
+#define IRQ_MAC_NUBUS IRQ_VIA2_1
+#define IRQ_VIA2_2 (18)
+#define IRQ_VIA2_3 (19)
+#define IRQ_MAC_SCSI IRQ_VIA2_3
+#define IRQ_VIA2_4 (20)
+#define IRQ_VIA2_5 (21)
+#define IRQ_VIA2_6 (22)
+#define IRQ_VIA2_7 (23)
+
+/* Level 3 (PSC, AV Macs only) interrupts */
+#define IRQ_PSC3_0 (24)
+#define IRQ_MAC_MACE IRQ_PSC3_0
+#define IRQ_PSC3_1 (25)
+#define IRQ_PSC3_2 (26)
+#define IRQ_PSC3_3 (27)
+
+/* Level 4 (SCC) interrupts */
+#define IRQ_SCC (32)
+#define IRQ_SCCA (33)
+#define IRQ_SCCB (34)
+#if 0 /* FIXME: are there multiple interrupt conditions on the SCC ?? */
+/* SCC interrupts */
+#define IRQ_SCCB_TX (32)
+#define IRQ_SCCB_STAT (33)
+#define IRQ_SCCB_RX (34)
+#define IRQ_SCCB_SPCOND (35)
+#define IRQ_SCCA_TX (36)
+#define IRQ_SCCA_STAT (37)
+#define IRQ_SCCA_RX (38)
+#define IRQ_SCCA_SPCOND (39)
+#endif
+
+/* Level 4 (PSC, AV Macs only) interrupts */
+#define IRQ_PSC4_0 (32)
+#define IRQ_PSC4_1 (33)
+#define IRQ_PSC4_2 (34)
+#define IRQ_PSC4_3 (35)
+#define IRQ_MAC_MACE_DMA IRQ_PSC4_3
+
+/* Level 5 (PSC, AV Macs only) interrupts */
+#define IRQ_PSC5_0 (40)
+#define IRQ_PSC5_1 (41)
+#define IRQ_PSC5_2 (42)
+#define IRQ_PSC5_3 (43)
+
+/* Level 6 (PSC, AV Macs only) interrupts */
+#define IRQ_PSC6_0 (48)
+#define IRQ_PSC6_1 (49)
+#define IRQ_PSC6_2 (50)
+#define IRQ_PSC6_3 (51)
+
+/* Nubus interrupts (cascaded to VIA2) */
+#define IRQ_NUBUS_9 (56)
+#define IRQ_NUBUS_A (57)
+#define IRQ_NUBUS_B (58)
+#define IRQ_NUBUS_C (59)
+#define IRQ_NUBUS_D (60)
+#define IRQ_NUBUS_E (61)
+#define IRQ_NUBUS_F (62)
+
+/* Baboon interrupts (cascaded to nubus slot $C) */
+#define IRQ_BABOON_0 (64)
+#define IRQ_BABOON_1 (65)
+#define IRQ_BABOON_2 (66)
+#define IRQ_BABOON_3 (67)
+
+#define SLOT2IRQ(x) (x + 47)
+#define IRQ2SLOT(x) (x - 47)
+
+#define INT_CLK 24576 /* CLK while int_clk =2.456MHz and divide = 100 */
+#define INT_TICKS 246 /* to make sched_time = 99.902... HZ */
+
+extern irq_node_t *mac_irq_list[NUM_MAC_SOURCES];
+extern void mac_do_irq_list(int irq, struct pt_regs *);
+
+#endif /* asm/macints.h */