patch-2.1.44 linux/arch/mips/jazz/setup.c

• Lines: 74
• Date: Thu Jun 26 12:33:37 1997
• Orig file: v2.1.43/linux/arch/mips/jazz/setup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.43/linux/arch/mips/jazz/setup.c linux/arch/mips/jazz/setup.c
@@ -0,0 +1,73 @@
+/*
+ * Setup pointers to hardware dependand routines.
+ *
+ * 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.
+ *
+ * Copyright (C) 1996, 1997 by Ralf Baechle
+ */
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <asm/irq.h>
+#include <asm/jazz.h>
+#include <asm/ptrace.h>
+#include <asm/reboot.h>
+#include <asm/vector.h>
+#include <asm/io.h>
+
+/*
+ * Initial irq handlers.
+ */
+static void no_action(int cpl, void *dev_id, struct pt_regs *regs) { }
+
+/*
+ * IRQ2 is cascade interrupt to second interrupt controller
+ */
+static struct irqaction irq2  = { no_action, 0, 0, "cascade", NULL, NULL};
+
+extern asmlinkage void jazz_handle_int(void);
+extern asmlinkage void jazz_fd_cacheflush(const void *addr, size_t size);
+extern struct feature jazz_feature;
+
+extern void jazz_machine_restart(char *command);
+extern void jazz_machine_halt(void);
+extern void jazz_machine_power_off(void);
+
+__initfunc(static void jazz_irq_setup(void))
+{
+        set_except_vector(0, jazz_handle_int);
+	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
+			  JAZZ_IE_ETHERNET |
+			  JAZZ_IE_SERIAL1  |
+			  JAZZ_IE_SERIAL2  |
+ 			  JAZZ_IE_PARALLEL |
+			  JAZZ_IE_FLOPPY);
+	r4030_read_reg16(JAZZ_IO_IRQ_SOURCE); /* clear pending IRQs */
+	r4030_read_reg32(JAZZ_R4030_INVAL_ADDR); /* clear error bits */
+	set_cp0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
+	/* set the clock to 100 Hz */
+	r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
+	request_region(0x20, 0x20, "pic1");
+	request_region(0xa0, 0x20, "pic2");
+	setup_x86_irq(2, &irq2);
+}
+
+__initfunc(void jazz_setup(void))
+{
+	irq_setup = jazz_irq_setup;
+	fd_cacheflush = jazz_fd_cacheflush;
+	feature = &jazz_feature;			// Will go away
+	isa_slot_offset = 0xe3000000;
+	request_region(0x00,0x20,"dma1");
+	request_region(0x40,0x20,"timer");
+	request_region(0x80,0x10,"dma page reg");
+	request_region(0xc0,0x20,"dma2");
+	/* The RTC is outside the port address space */
+
+	_machine_restart = jazz_machine_restart;
+	_machine_halt = jazz_machine_halt;
+	_machine_power_off = jazz_machine_power_off;
+}