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linux-mips-commits
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From: Bradley D. L. <br...@us...> - 2001-11-04 16:02:55
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Update of /cvsroot/linux-mips/linux/arch/mips/philips/nino
In directory usw-pr-cvs1:/tmp/cvs-serv15502/arch/mips/philips/nino
Modified Files:
Makefile int-handler.S irq.c kgdb.c power.c prom.c setup.c
time.c
Log Message:
Please correct me if I'm wrong, but I think oss has the latest Nino stuff.
Index: Makefile
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips/philips/nino/Makefile,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -d -r1.5 -r1.6
--- Makefile 2001/10/27 20:29:40 1.5
+++ Makefile 2001/11/04 16:02:52 1.6
@@ -22,6 +22,12 @@
obj-$(CONFIG_REMOTE_DEBUG) += kgdb.o
+obj-$(CONFIG_BLK_DEV_INITRD) += ramdisk.o
+
+ramdisk.o:
+ $(MAKE) -C ramdisk
+ mv ramdisk/ramdisk.o ramdisk.o
+
clean:
rm -f *.o
Index: int-handler.S
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips/philips/nino/int-handler.S,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -d -r1.3 -r1.4
--- int-handler.S 2001/10/31 18:29:07 1.3
+++ int-handler.S 2001/11/04 16:02:52 1.4
@@ -1,14 +1,9 @@
/*
- * arch/mips/philips/nino/int-handler.S
+ * int-handler.S: Interrupt exception dispatch code for Philips Nino
*
* Copyright (C) 2001 Steven J. Hill (sj...@re...)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Interrupt exception dispatch code for Philips Nino
*/
+
#include <asm/asm.h>
#include <asm/mipsregs.h>
#include <asm/regdef.h>
@@ -18,16 +13,26 @@
* Here is the table of interrupts for the Philips Nino
* which uses the Philips PR31700/Toshiba TMPR3912 core.
*
- * MIPS IRQ Description
- * -------- --------------------------------
- * 0 SW0 interrupt (unused)
- * 1 SW1 interrupt (unused)
- * 2
- * 3
- * 4 PR31700 low priority interrupts
- * 5
- * 6 PR31700 high priority interrupts
- * 7
+ * MIPS IRQ PR31700 IRQ Source
+ * -------- ----------- ------
+ * 0 1 Sound, LCD, telecom
+ * 1 2 UARTA & UARTB
+ * 2 3 MFIO (positive edge)
+ * 3 4 MFIO (negative edge)
+ * 4 5 Timers, power management
+ * 5 6 High priority interrupts
+ *
+ * We handle the IRQ according to the priorities below:
+ *
+ * Highest ---- High priority interrupts
+ * UARTA & UARTB
+ * Timers, power management
+ * Sound, LCD, telecom
+ * Multi-function IO (positive edge)
+ * Lowest ---- Multi-function IO (negative edge)
+ *
+ * then we just return, if multiple IRQs are pending then
+ * we will just take another exception, big deal.
*/
.text
@@ -38,29 +43,40 @@
SAVE_ALL
CLI
.set at
- mfc0 s0, CP0_CAUSE # determine cause
+ mfc0 s0, CP0_CAUSE # get irq mask
- andi a0, s0, CAUSEF_IP6
+ /* Check for IRQ4 */
+ andi a0, s0, C_IRQ4
beq a0, zero, 1f
- andi a0, s0, CAUSEF_IP4 # delay slot
+ andi a0, s0, C_IRQ2 # delay slot, check for IRQ2
+
+ /* High priority interrupt */
move a0, sp
- jal irq6_dispatch
+ jal irq4_dispatch
nop # delay slot
+
j ret_from_irq
nop # delay slot
1:
+ /* Check for IRQ2 */
beq a0, zero, 1f
nop # delay slot
+
+ /* UART interrupt of some sort */
move a0, sp
- jal irq4_dispatch
+ jal irq2_dispatch
nop # delay slot
+
j ret_from_irq
nop # delay slot
1:
/* We should never get here */
move a0, sp
- j irq_bad
+ jal irq_bad
+ nop
+
+ j ret_from_irq
nop
END(ninoIRQ)
Index: irq.c
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips/philips/nino/irq.c,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -d -r1.5 -r1.6
--- irq.c 2001/10/31 18:29:07 1.5
+++ irq.c 2001/11/04 16:02:52 1.6
@@ -1,13 +1,7 @@
/*
- * arch/mips/philips/nino/irq.c
+ * include/arch/mips/philips/nino/irq.c
*
* Copyright (C) 2001 Steven J. Hill (sj...@re...)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Interrupt service routines for Philips Nino
*/
#include <linux/init.h>
#include <linux/sched.h>
@@ -19,7 +13,7 @@
extern asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
-static void enable_irq6(unsigned int irq)
+static void enable_irq4(unsigned int irq)
{
if(irq == 0) {
IntEnable5 |= INT5_PERIODICINT;
@@ -27,14 +21,14 @@
}
}
-static unsigned int startup_irq6(unsigned int irq)
+static unsigned int startup_irq4(unsigned int irq)
{
- enable_irq6(irq);
+ enable_irq4(irq);
return 0; /* Never anything pending */
}
-static void disable_irq6(unsigned int irq)
+static void disable_irq4(unsigned int irq)
{
if(irq == 0) {
IntEnable6 &= ~INT6_PERIODICINT;
@@ -43,27 +37,27 @@
}
}
-#define shutdown_irq6 disable_irq6
-#define mask_and_ack_irq6 disable_irq6
+#define shutdown_irq4 disable_irq4
+#define mask_and_ack_irq4 disable_irq4
-static void end_irq6(unsigned int irq)
+static void end_irq4(unsigned int irq)
{
if(!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
- enable_irq6(irq);
+ enable_irq4(irq);
}
-static struct hw_interrupt_type irq6_type = {
+static struct hw_interrupt_type irq4_type = {
"MIPS",
- startup_irq6,
- shutdown_irq6,
- enable_irq6,
- disable_irq6,
- mask_and_ack_irq6,
- end_irq6,
+ startup_irq4,
+ shutdown_irq4,
+ enable_irq4,
+ disable_irq4,
+ mask_and_ack_irq4,
+ end_irq4,
NULL
};
-void irq6_dispatch(struct pt_regs *regs)
+void irq4_dispatch(struct pt_regs *regs)
{
int irq = -1;
@@ -74,7 +68,8 @@
/* if irq == -1, then the interrupt has already been cleared */
if(irq == -1) {
- panic("No handler installed for MIPS IRQ6\n");
+ printk("IRQ6 Status Register = 0x%08lx\n", IntStatus6);
+ goto end;
}
done:
@@ -84,59 +79,68 @@
return;
}
-static void enable_irq4(unsigned int irq)
+static void enable_irq2(unsigned int irq)
{
set_cp0_status(STATUSF_IP4);
- if(irq == 2) {
+ if(irq == 2 || irq == 3) {
IntClear2 = 0xffffffff;
- IntEnable2 |= 0x07c00000;
+ IntEnable2 = 0xfffff000;
}
}
-static unsigned int startup_irq4(unsigned int irq)
+static unsigned int startup_irq2(unsigned int irq)
{
- enable_irq4(irq);
+ enable_irq2(irq);
return 0; /* Never anything pending */
}
-static void disable_irq4(unsigned int irq)
+static void disable_irq2(unsigned int irq)
{
clear_cp0_status(STATUSF_IP4);
}
-#define shutdown_irq4 disable_irq4
-#define mask_and_ack_irq4 disable_irq4
+#define shutdown_irq2 disable_irq2
+#define mask_and_ack_irq2 disable_irq2
-static void end_irq4(unsigned int irq)
+static void end_irq2(unsigned int irq)
{
if(!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
- enable_irq4(irq);
+ enable_irq2(irq);
}
-static struct hw_interrupt_type irq4_type = {
+static struct hw_interrupt_type irq2_type = {
"MIPS",
- startup_irq4,
- shutdown_irq4,
- enable_irq4,
- disable_irq4,
- mask_and_ack_irq4,
- end_irq4,
+ startup_irq2,
+ shutdown_irq2,
+ enable_irq2,
+ disable_irq2,
+ mask_and_ack_irq2,
+ end_irq2,
NULL
};
-void irq4_dispatch(struct pt_regs *regs)
+void irq2_dispatch(struct pt_regs *regs)
{
int irq = -1;
- if(IntStatus2 & 0x07c00000) {
+ if(IntStatus2 & 0xfffff000) {
irq = 2;
goto done;
}
+ if(IntStatus2 & 0xfffff000) {
+ irq = 3;
+ goto done;
+ }
/* if irq == -1, then the interrupt has already been cleared */
if (irq == -1) {
- panic("No handler installed for MIPS IRQ4\n");
+ printk("EEK\n");
+ IntClear1 = 0xffffffff;
+ IntClear3 = 0xffffffff;
+ IntClear4 = 0xffffffff;
+ IntClear5 = 0xffffffff;
+ goto end;
}
done:
@@ -186,10 +190,10 @@
/* Initialize IRQ action handlers */
for (i = 0; i < 16; i++) {
hw_irq_controller *handler = NULL;
- if (i == 0 || i == 3)
- handler = &irq6_type;
- else if (i == 2)
+ if (i == 0)
handler = &irq4_type;
+ else if (i > 1 && i < 4)
+ handler = &irq2_type;
else
handler = NULL;
@@ -205,8 +209,8 @@
/* Enable high priority interrupts */
IntEnable6 = (INT6_GLOBALEN | 0xffff);
- /* Enable all interrupts */
- change_cp0_status(ST0_IM, ALLINTS);
+ /* Enable interrupts */
+ change_cp0_status(ST0_IM, IE_IRQ2 | IE_IRQ4);
}
void (*irq_setup)(void);
Index: kgdb.c
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips/philips/nino/kgdb.c,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- kgdb.c 2001/10/31 18:29:07 1.2
+++ kgdb.c 2001/11/04 16:02:52 1.3
@@ -1,5 +1,5 @@
/*
- * arch/mips/philips/nino/kgdb.c
+ * linux/arch/mips/philips/nino/kgdb.c
*
* Copyright (C) 2001 Steven J. Hill (sj...@re...)
*
@@ -7,7 +7,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
- * Kernel debugging for the Philips Nino
+ * Kernel debugging on the Philips Nino.
*/
#include <asm/system.h>
#include <asm/tx3912.h>
Index: power.c
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips/philips/nino/power.c,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- power.c 2001/10/31 18:29:07 1.2
+++ power.c 2001/11/04 16:02:52 1.3
@@ -1,5 +1,5 @@
/*
- * arch/mips/philips/nino/power.c
+ * linux/arch/mips/philips/nino/power.c
*
* Copyright (C) 2000 Jim Pick <ji...@ji...>
* Copyright (C) 2001 Steven J. Hill (sj...@re...)
@@ -8,7 +8,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
- * Power management routines for the Philips Nino
+ * Power management routines on the Philips Nino.
*/
#include <asm/tx3912.h>
Index: prom.c
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips/philips/nino/prom.c,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -d -r1.3 -r1.4
--- prom.c 2001/10/31 18:29:08 1.3
+++ prom.c 2001/11/04 16:02:52 1.4
@@ -1,5 +1,5 @@
/*
- * arch/mips/philips/nino/prom.c
+ * linux/arch/mips/philips/nino/prom.c
*
* Copyright (C) 2001 Steven J. Hill (sj...@re...)
*
@@ -7,7 +7,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
- * Early initialization code for the Philips Nino
+ * Early initialization code for the Philips Nino.
*/
#include <linux/config.h>
#include <linux/init.h>
Index: setup.c
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips/philips/nino/setup.c,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -d -r1.4 -r1.5
--- setup.c 2001/10/31 18:29:08 1.4
+++ setup.c 2001/11/04 16:02:52 1.5
@@ -1,5 +1,5 @@
/*
- * arch/mips/philips/nino/setup.c
+ * linux/arch/mips/philips/nino/setup.c
*
* Copyright (C) 2001 Steven J. Hill (sj...@re...)
*
@@ -7,7 +7,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
- * Interrupt and exception initialization for Philips Nino
+ * Interrupt and exception initialization for Philips Nino.
*/
#include <linux/init.h>
#include <linux/interrupt.h>
Index: time.c
===================================================================
RCS file: /cvsroot/linux-mips/linux/arch/mips/philips/nino/time.c,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -d -r1.4 -r1.5
--- time.c 2001/10/31 18:29:08 1.4
+++ time.c 2001/11/04 16:02:52 1.5
@@ -1,5 +1,5 @@
/*
- * arch/mips/philips/nino/time.c
+ * linux/arch/mips/philips/nino/time.c
*
* Copyright (C) 1999 Harald Koerfgen
* Copyright (C) 2000 Pavel Machek (pa...@su...)
@@ -9,7 +9,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
- * Time handling functinos for Philips Nino
+ * Time handling functinos for Philips Nino.
*/
#include <linux/errno.h>
#include <linux/init.h>
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