Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (80 commits)
  [MIPS] tlbex.c: Cleanup __init usage.
  [MIPS] WRPPMC serial support move to platform device
  [MIPS] R1: Fix hazard barriers to make kernels work on R2 also.
  [MIPS] VPE: reimplement ELF loader.
  [MIPS] cleanup WRPPMC include files
  [MIPS] Add BUG_ON assertion for attempt to run kernel on the wrong CPU type.
  [MIPS] SMP: Use ISO C struct initializer for local structs.
  [MIPS] SMP: Kill useless casts.
  [MIPS] Kill num_online_cpus() loops.
  [MIPS] SMP: Implement smp_call_function_mask().
  [MIPS] Make facility to convert CPU types to strings generally available.
  [MIPS] Convert list of CPU types from #define to enum.
  [MIPS] Optimize get_unaligned / put_unaligned implementations.
  [MIPS] checkfiles: Fix "need space after that ','" errors.
  [MIPS] Fix "no space between function name and open parenthesis" warnings.
  [MIPS] Allow hardwiring of the CPU type to a single type for optimization.
  [MIPS] tlbex: Size optimize code by declaring a few functions inline.
  [MIPS] pg-r4k.c: Dump the generated code
  [MIPS] Cobalt: Remove cobalt_machine_power_off()
  [MIPS] Cobalt: Move reset port definition to arch/mips/cobalt/reset.c
  ...

1 files changed, 75 insertions, 67 deletions

diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index 015cf4b..835b056 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -6,20 +6,23 @@
  * Copyright (C) 1992 Linus Torvalds
  * Copyright (C) 1994 - 2001, 2003 Ralf Baechle
  */
+#include <linux/clockchips.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/spinlock.h>
 
+#include <asm/irq_cpu.h>
 #include <asm/i8259.h>
 #include <asm/io.h>
 #include <asm/jazz.h>
+#include <asm/pgtable.h>
 
 static DEFINE_SPINLOCK(r4030_lock);
 
 static void enable_r4030_irq(unsigned int irq)
 {
-	unsigned int mask = 1 << (irq - JAZZ_PARALLEL_IRQ);
+	unsigned int mask = 1 << (irq - JAZZ_IRQ_START);
 	unsigned long flags;
 
 	spin_lock_irqsave(&r4030_lock, flags);
@@ -30,7 +33,7 @@ static void enable_r4030_irq(unsigned int irq)
 
 void disable_r4030_irq(unsigned int irq)
 {
-	unsigned int mask = ~(1 << (irq - JAZZ_PARALLEL_IRQ));
+	unsigned int mask = ~(1 << (irq - JAZZ_IRQ_START));
 	unsigned long flags;
 
 	spin_lock_irqsave(&r4030_lock, flags);
@@ -51,7 +54,7 @@ void __init init_r4030_ints(void)
 {
 	int i;
 
-	for (i = JAZZ_PARALLEL_IRQ; i <= JAZZ_TIMER_IRQ; i++)
+	for (i = JAZZ_IRQ_START; i <= JAZZ_IRQ_END; i++)
 		set_irq_chip_and_handler(i, &r4030_irq_type, handle_level_irq);
 
 	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE, 0);
@@ -66,82 +69,87 @@ void __init init_r4030_ints(void)
  */
 void __init arch_init_irq(void)
 {
+	/*
+	 * this is a hack to get back the still needed wired mapping
+	 * killed by init_mm()
+	 */
+
+	/* Map 0xe0000000 -> 0x0:800005C0, 0xe0010000 -> 0x1:30000580 */
+	add_wired_entry(0x02000017, 0x03c00017, 0xe0000000, PM_64K);
+	/* Map 0xe2000000 -> 0x0:900005C0, 0xe3010000 -> 0x0:910005C0 */
+	add_wired_entry(0x02400017, 0x02440017, 0xe2000000, PM_16M);
+	/* Map 0xe4000000 -> 0x0:600005C0, 0xe4100000 -> 400005C0 */
+	add_wired_entry(0x01800017, 0x01000017, 0xe4000000, PM_4M);
+
 	init_i8259_irqs();			/* Integrated i8259  */
+	mips_cpu_irq_init();
 	init_r4030_ints();
 
-	change_c0_status(ST0_IM, IE_IRQ4 | IE_IRQ3 | IE_IRQ2 | IE_IRQ1);
-}
-
-static void loc_call(unsigned int irq, unsigned int mask)
-{
-	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
-	                  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) & mask);
-	do_IRQ(irq);
-	r4030_write_reg16(JAZZ_IO_IRQ_ENABLE,
-	                  r4030_read_reg16(JAZZ_IO_IRQ_ENABLE) | mask);
-}
-
-static void ll_local_dev(void)
-{
-	switch (r4030_read_reg32(JAZZ_IO_IRQ_SOURCE)) {
-	case 0:
-		panic("Unimplemented loc_no_irq handler");
-		break;
-	case 4:
-		loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_PARALLEL);
-		break;
-	case 8:
-		loc_call(JAZZ_PARALLEL_IRQ, JAZZ_IE_FLOPPY);
-		break;
-	case 12:
-		panic("Unimplemented loc_sound handler");
-		break;
-	case 16:
-		panic("Unimplemented loc_video handler");
-		break;
-	case 20:
-		loc_call(JAZZ_ETHERNET_IRQ, JAZZ_IE_ETHERNET);
-		break;
-	case 24:
-		loc_call(JAZZ_SCSI_IRQ, JAZZ_IE_SCSI);
-		break;
-	case 28:
-		loc_call(JAZZ_KEYBOARD_IRQ, JAZZ_IE_KEYBOARD);
-		break;
-	case 32:
-		loc_call(JAZZ_MOUSE_IRQ, JAZZ_IE_MOUSE);
-		break;
-	case 36:
-		loc_call(JAZZ_SERIAL1_IRQ, JAZZ_IE_SERIAL1);
-		break;
-	case 40:
-		loc_call(JAZZ_SERIAL2_IRQ, JAZZ_IE_SERIAL2);
-		break;
-	}
+	change_c0_status(ST0_IM, IE_IRQ2 | IE_IRQ1);
 }
 
 asmlinkage void plat_irq_dispatch(void)
 {
 	unsigned int pending = read_c0_cause() & read_c0_status();
+	unsigned int irq;
 
-	if (pending & IE_IRQ5)
-		write_c0_compare(0);
-	else if (pending & IE_IRQ4) {
+	if (pending & IE_IRQ4) {
 		r4030_read_reg32(JAZZ_TIMER_REGISTER);
 		do_IRQ(JAZZ_TIMER_IRQ);
-	} else if (pending & IE_IRQ3)
-		panic("Unimplemented ISA NMI handler");
-	else if (pending & IE_IRQ2)
+	} else if (pending & IE_IRQ2)
 		do_IRQ(r4030_read_reg32(JAZZ_EISA_IRQ_ACK));
 	else if (pending & IE_IRQ1) {
-		ll_local_dev();
-	} else if (unlikely(pending & IE_IRQ0))
-		panic("Unimplemented local_dma handler");
-	else if (pending & IE_SW1) {
-		clear_c0_cause(IE_SW1);
-		panic("Unimplemented sw1 handler");
-	} else if (pending & IE_SW0) {
-		clear_c0_cause(IE_SW0);
-		panic("Unimplemented sw0 handler");
+		irq = *(volatile u8 *)JAZZ_IO_IRQ_SOURCE >> 2;
+		if (likely(irq > 0))
+			do_IRQ(irq + JAZZ_IRQ_START - 1);
+		else
+			panic("Unimplemented loc_no_irq handler");
 	}
 }
+
+static void r4030_set_mode(enum clock_event_mode mode,
+                           struct clock_event_device *evt)
+{
+	/* Nothing to do ...  */
+}
+
+struct clock_event_device r4030_clockevent = {
+	.name		= "r4030",
+	.features	= CLOCK_EVT_FEAT_PERIODIC,
+	.rating		= 100,
+	.irq		= JAZZ_TIMER_IRQ,
+	.cpumask	= CPU_MASK_CPU0,
+	.set_mode	= r4030_set_mode,
+};
+
+static irqreturn_t r4030_timer_interrupt(int irq, void *dev_id)
+{
+	r4030_clockevent.event_handler(&r4030_clockevent);
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction r4030_timer_irqaction = {
+	.handler	= r4030_timer_interrupt,
+	.flags		= IRQF_DISABLED,
+	.mask		= CPU_MASK_CPU0,
+	.name		= "timer",
+};
+
+void __init plat_timer_setup(struct irqaction *ignored)
+{
+	struct irqaction *irq = &r4030_timer_irqaction;
+
+	BUG_ON(HZ != 100);
+
+	/*
+	 * Set clock to 100Hz.
+	 *
+	 * The R4030 timer receives an input clock of 1kHz which is divieded by
+	 * a programmable 4-bit divider.  This makes it fairly inflexible.
+	 */
+	r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
+	setup_irq(JAZZ_TIMER_IRQ, irq);
+
+	clockevents_register_device(&r4030_clockevent);
+}