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Diffstat (limited to 'arch/mips/tx4938/common/irq.c')
-rw-r--r--arch/mips/tx4938/common/irq.c424
1 files changed, 0 insertions, 424 deletions
diff --git a/arch/mips/tx4938/common/irq.c b/arch/mips/tx4938/common/irq.c
deleted file mode 100644
index 4f90d7faf63..00000000000
--- a/arch/mips/tx4938/common/irq.c
+++ /dev/null
@@ -1,424 +0,0 @@
-/*
- * linux/arch/mps/tx4938/common/irq.c
- *
- * Common tx4938 irq handler
- * Copyright (C) 2000-2001 Toshiba Corporation
- *
- * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
- * terms of the GNU General Public License version 2. This program is
- * licensed "as is" without any warranty of any kind, whether express
- * or implied.
- *
- * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
- */
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/kernel_stat.h>
-#include <linux/module.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/timex.h>
-#include <linux/slab.h>
-#include <linux/random.h>
-#include <linux/irq.h>
-#include <asm/bitops.h>
-#include <asm/bootinfo.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/mipsregs.h>
-#include <asm/system.h>
-#include <asm/tx4938/rbtx4938.h>
-
-/**********************************************************************************/
-/* Forwad definitions for all pic's */
-/**********************************************************************************/
-
-static unsigned int tx4938_irq_cp0_startup(unsigned int irq);
-static void tx4938_irq_cp0_shutdown(unsigned int irq);
-static void tx4938_irq_cp0_enable(unsigned int irq);
-static void tx4938_irq_cp0_disable(unsigned int irq);
-static void tx4938_irq_cp0_mask_and_ack(unsigned int irq);
-static void tx4938_irq_cp0_end(unsigned int irq);
-
-static unsigned int tx4938_irq_pic_startup(unsigned int irq);
-static void tx4938_irq_pic_shutdown(unsigned int irq);
-static void tx4938_irq_pic_enable(unsigned int irq);
-static void tx4938_irq_pic_disable(unsigned int irq);
-static void tx4938_irq_pic_mask_and_ack(unsigned int irq);
-static void tx4938_irq_pic_end(unsigned int irq);
-
-/**********************************************************************************/
-/* Kernel structs for all pic's */
-/**********************************************************************************/
-DEFINE_SPINLOCK(tx4938_cp0_lock);
-DEFINE_SPINLOCK(tx4938_pic_lock);
-
-#define TX4938_CP0_NAME "TX4938-CP0"
-static struct hw_interrupt_type tx4938_irq_cp0_type = {
- .typename = TX4938_CP0_NAME,
- .startup = tx4938_irq_cp0_startup,
- .shutdown = tx4938_irq_cp0_shutdown,
- .enable = tx4938_irq_cp0_enable,
- .disable = tx4938_irq_cp0_disable,
- .ack = tx4938_irq_cp0_mask_and_ack,
- .end = tx4938_irq_cp0_end,
- .set_affinity = NULL
-};
-
-#define TX4938_PIC_NAME "TX4938-PIC"
-static struct hw_interrupt_type tx4938_irq_pic_type = {
- .typename = TX4938_PIC_NAME,
- .startup = tx4938_irq_pic_startup,
- .shutdown = tx4938_irq_pic_shutdown,
- .enable = tx4938_irq_pic_enable,
- .disable = tx4938_irq_pic_disable,
- .ack = tx4938_irq_pic_mask_and_ack,
- .end = tx4938_irq_pic_end,
- .set_affinity = NULL
-};
-
-static struct irqaction tx4938_irq_pic_action = {
- .handler = no_action,
- .flags = 0,
- .mask = CPU_MASK_NONE,
- .name = TX4938_PIC_NAME
-};
-
-/**********************************************************************************/
-/* Functions for cp0 */
-/**********************************************************************************/
-
-#define tx4938_irq_cp0_mask(irq) ( 1 << ( irq-TX4938_IRQ_CP0_BEG+8 ) )
-
-static void __init
-tx4938_irq_cp0_init(void)
-{
- int i;
-
- for (i = TX4938_IRQ_CP0_BEG; i <= TX4938_IRQ_CP0_END; i++) {
- irq_desc[i].status = IRQ_DISABLED;
- irq_desc[i].action = 0;
- irq_desc[i].depth = 1;
- irq_desc[i].handler = &tx4938_irq_cp0_type;
- }
-
- return;
-}
-
-static unsigned int
-tx4938_irq_cp0_startup(unsigned int irq)
-{
- tx4938_irq_cp0_enable(irq);
-
- return (0);
-}
-
-static void
-tx4938_irq_cp0_shutdown(unsigned int irq)
-{
- tx4938_irq_cp0_disable(irq);
-}
-
-static void
-tx4938_irq_cp0_enable(unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&tx4938_cp0_lock, flags);
-
- set_c0_status(tx4938_irq_cp0_mask(irq));
-
- spin_unlock_irqrestore(&tx4938_cp0_lock, flags);
-}
-
-static void
-tx4938_irq_cp0_disable(unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&tx4938_cp0_lock, flags);
-
- clear_c0_status(tx4938_irq_cp0_mask(irq));
-
- spin_unlock_irqrestore(&tx4938_cp0_lock, flags);
-
- return;
-}
-
-static void
-tx4938_irq_cp0_mask_and_ack(unsigned int irq)
-{
- tx4938_irq_cp0_disable(irq);
-
- return;
-}
-
-static void
-tx4938_irq_cp0_end(unsigned int irq)
-{
- if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
- tx4938_irq_cp0_enable(irq);
- }
-
- return;
-}
-
-/**********************************************************************************/
-/* Functions for pic */
-/**********************************************************************************/
-
-u32
-tx4938_irq_pic_addr(int irq)
-{
- /* MVMCP -- need to formulize this */
- irq -= TX4938_IRQ_PIC_BEG;
-
- switch (irq) {
- case 17:
- case 16:
- case 1:
- case 0:{
- return (TX4938_MKA(TX4938_IRC_IRLVL0));
- }
- case 19:
- case 18:
- case 3:
- case 2:{
- return (TX4938_MKA(TX4938_IRC_IRLVL1));
- }
- case 21:
- case 20:
- case 5:
- case 4:{
- return (TX4938_MKA(TX4938_IRC_IRLVL2));
- }
- case 23:
- case 22:
- case 7:
- case 6:{
- return (TX4938_MKA(TX4938_IRC_IRLVL3));
- }
- case 25:
- case 24:
- case 9:
- case 8:{
- return (TX4938_MKA(TX4938_IRC_IRLVL4));
- }
- case 27:
- case 26:
- case 11:
- case 10:{
- return (TX4938_MKA(TX4938_IRC_IRLVL5));
- }
- case 29:
- case 28:
- case 13:
- case 12:{
- return (TX4938_MKA(TX4938_IRC_IRLVL6));
- }
- case 31:
- case 30:
- case 15:
- case 14:{
- return (TX4938_MKA(TX4938_IRC_IRLVL7));
- }
- }
-
- return (0);
-}
-
-u32
-tx4938_irq_pic_mask(int irq)
-{
- /* MVMCP -- need to formulize this */
- irq -= TX4938_IRQ_PIC_BEG;
-
- switch (irq) {
- case 31:
- case 29:
- case 27:
- case 25:
- case 23:
- case 21:
- case 19:
- case 17:{
- return (0x07000000);
- }
- case 30:
- case 28:
- case 26:
- case 24:
- case 22:
- case 20:
- case 18:
- case 16:{
- return (0x00070000);
- }
- case 15:
- case 13:
- case 11:
- case 9:
- case 7:
- case 5:
- case 3:
- case 1:{
- return (0x00000700);
- }
- case 14:
- case 12:
- case 10:
- case 8:
- case 6:
- case 4:
- case 2:
- case 0:{
- return (0x00000007);
- }
- }
- return (0x00000000);
-}
-
-static void
-tx4938_irq_pic_modify(unsigned pic_reg, unsigned clr_bits, unsigned set_bits)
-{
- unsigned long val = 0;
-
- val = TX4938_RD(pic_reg);
- val &= (~clr_bits);
- val |= (set_bits);
- TX4938_WR(pic_reg, val);
- mmiowb();
- TX4938_RD(pic_reg);
-
- return;
-}
-
-static void __init
-tx4938_irq_pic_init(void)
-{
- unsigned long flags;
- int i;
-
- for (i = TX4938_IRQ_PIC_BEG; i <= TX4938_IRQ_PIC_END; i++) {
- irq_desc[i].status = IRQ_DISABLED;
- irq_desc[i].action = 0;
- irq_desc[i].depth = 2;
- irq_desc[i].handler = &tx4938_irq_pic_type;
- }
-
- setup_irq(TX4938_IRQ_NEST_PIC_ON_CP0, &tx4938_irq_pic_action);
-
- spin_lock_irqsave(&tx4938_pic_lock, flags);
-
- TX4938_WR(0xff1ff640, 0x6); /* irq level mask -- only accept hightest */
- TX4938_WR(0xff1ff600, TX4938_RD(0xff1ff600) | 0x1); /* irq enable */
-
- spin_unlock_irqrestore(&tx4938_pic_lock, flags);
-
- return;
-}
-
-static unsigned int
-tx4938_irq_pic_startup(unsigned int irq)
-{
- tx4938_irq_pic_enable(irq);
-
- return (0);
-}
-
-static void
-tx4938_irq_pic_shutdown(unsigned int irq)
-{
- tx4938_irq_pic_disable(irq);
-
- return;
-}
-
-static void
-tx4938_irq_pic_enable(unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&tx4938_pic_lock, flags);
-
- tx4938_irq_pic_modify(tx4938_irq_pic_addr(irq), 0,
- tx4938_irq_pic_mask(irq));
-
- spin_unlock_irqrestore(&tx4938_pic_lock, flags);
-
- return;
-}
-
-static void
-tx4938_irq_pic_disable(unsigned int irq)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&tx4938_pic_lock, flags);
-
- tx4938_irq_pic_modify(tx4938_irq_pic_addr(irq),
- tx4938_irq_pic_mask(irq), 0);
-
- spin_unlock_irqrestore(&tx4938_pic_lock, flags);
-
- return;
-}
-
-static void
-tx4938_irq_pic_mask_and_ack(unsigned int irq)
-{
- tx4938_irq_pic_disable(irq);
-
- return;
-}
-
-static void
-tx4938_irq_pic_end(unsigned int irq)
-{
- if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
- tx4938_irq_pic_enable(irq);
- }
-
- return;
-}
-
-/**********************************************************************************/
-/* Main init functions */
-/**********************************************************************************/
-
-void __init
-tx4938_irq_init(void)
-{
- extern asmlinkage void tx4938_irq_handler(void);
-
- tx4938_irq_cp0_init();
- tx4938_irq_pic_init();
- set_except_vector(0, tx4938_irq_handler);
-
- return;
-}
-
-int
-tx4938_irq_nested(void)
-{
- int sw_irq = 0;
- u32 level2;
-
- level2 = TX4938_RD(0xff1ff6a0);
- if ((level2 & 0x10000) == 0) {
- level2 &= 0x1f;
- sw_irq = TX4938_IRQ_PIC_BEG + level2;
- if (sw_irq == 26) {
- {
- extern int toshiba_rbtx4938_irq_nested(int sw_irq);
- sw_irq = toshiba_rbtx4938_irq_nested(sw_irq);
- }
- }
- }
-
- wbflush();
- return (sw_irq);
-}
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