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Diffstat (limited to 'arch/mips/tx4927/common/tx4927_irq.c')
-rw-r--r--arch/mips/tx4927/common/tx4927_irq.c395
1 files changed, 10 insertions, 385 deletions
diff --git a/arch/mips/tx4927/common/tx4927_irq.c b/arch/mips/tx4927/common/tx4927_irq.c
index 00b0b975f349..0aabd57fdad2 100644
--- a/arch/mips/tx4927/common/tx4927_irq.c
+++ b/arch/mips/tx4927/common/tx4927_irq.c
@@ -23,398 +23,20 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#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 <linux/bitops.h>
-#include <asm/bootinfo.h>
-#include <asm/io.h>
-#include <asm/irq.h>
+#include <asm/irq_cpu.h>
#include <asm/mipsregs.h>
-#include <asm/system.h>
#include <asm/tx4927/tx4927.h>
#ifdef CONFIG_TOSHIBA_RBTX4927
#include <asm/tx4927/toshiba_rbtx4927.h>
#endif
-/*
- * DEBUG
- */
-
-#undef TX4927_IRQ_DEBUG
-
-#ifdef TX4927_IRQ_DEBUG
-#define TX4927_IRQ_NONE 0x00000000
-
-#define TX4927_IRQ_INFO ( 1 << 0 )
-#define TX4927_IRQ_WARN ( 1 << 1 )
-#define TX4927_IRQ_EROR ( 1 << 2 )
-
-#define TX4927_IRQ_INIT ( 1 << 5 )
-#define TX4927_IRQ_NEST1 ( 1 << 6 )
-#define TX4927_IRQ_NEST2 ( 1 << 7 )
-#define TX4927_IRQ_NEST3 ( 1 << 8 )
-#define TX4927_IRQ_NEST4 ( 1 << 9 )
-
-#define TX4927_IRQ_CP0_INIT ( 1 << 10 )
-#define TX4927_IRQ_CP0_ENABLE ( 1 << 13 )
-#define TX4927_IRQ_CP0_DISABLE ( 1 << 14 )
-
-#define TX4927_IRQ_PIC_INIT ( 1 << 20 )
-#define TX4927_IRQ_PIC_ENABLE ( 1 << 23 )
-#define TX4927_IRQ_PIC_DISABLE ( 1 << 24 )
-
-#define TX4927_IRQ_ALL 0xffffffff
-#endif
-
-#ifdef TX4927_IRQ_DEBUG
-static const u32 tx4927_irq_debug_flag = (TX4927_IRQ_NONE
- | TX4927_IRQ_INFO
- | TX4927_IRQ_WARN | TX4927_IRQ_EROR
-// | TX4927_IRQ_CP0_INIT
-// | TX4927_IRQ_CP0_ENABLE
-// | TX4927_IRQ_CP0_ENDIRQ
-// | TX4927_IRQ_PIC_INIT
-// | TX4927_IRQ_PIC_ENABLE
-// | TX4927_IRQ_PIC_DISABLE
-// | TX4927_IRQ_INIT
-// | TX4927_IRQ_NEST1
-// | TX4927_IRQ_NEST2
-// | TX4927_IRQ_NEST3
-// | TX4927_IRQ_NEST4
- );
-#endif
-
-#ifdef TX4927_IRQ_DEBUG
-#define TX4927_IRQ_DPRINTK(flag,str...) \
- if ( (tx4927_irq_debug_flag) & (flag) ) \
- { \
- char tmp[100]; \
- sprintf( tmp, str ); \
- printk( "%s(%s:%u)::%s", __FUNCTION__, __FILE__, __LINE__, tmp ); \
- }
-#else
-#define TX4927_IRQ_DPRINTK(flag,str...)
-#endif
-
-/*
- * Forwad definitions for all pic's
- */
-
-static void tx4927_irq_cp0_enable(unsigned int irq);
-static void tx4927_irq_cp0_disable(unsigned int irq);
-
-static void tx4927_irq_pic_enable(unsigned int irq);
-static void tx4927_irq_pic_disable(unsigned int irq);
-
-/*
- * Kernel structs for all pic's
- */
-
-#define TX4927_CP0_NAME "TX4927-CP0"
-static struct irq_chip tx4927_irq_cp0_type = {
- .name = TX4927_CP0_NAME,
- .ack = tx4927_irq_cp0_disable,
- .mask = tx4927_irq_cp0_disable,
- .mask_ack = tx4927_irq_cp0_disable,
- .unmask = tx4927_irq_cp0_enable,
-};
-
-#define TX4927_PIC_NAME "TX4927-PIC"
-static struct irq_chip tx4927_irq_pic_type = {
- .name = TX4927_PIC_NAME,
- .ack = tx4927_irq_pic_disable,
- .mask = tx4927_irq_pic_disable,
- .mask_ack = tx4927_irq_pic_disable,
- .unmask = tx4927_irq_pic_enable,
-};
-
-#define TX4927_PIC_ACTION(s) { no_action, 0, CPU_MASK_NONE, s, NULL, NULL }
-static struct irqaction tx4927_irq_pic_action =
-TX4927_PIC_ACTION(TX4927_PIC_NAME);
-
-#define CCP0_STATUS 12
-#define CCP0_CAUSE 13
-
-/*
- * Functions for cp0
- */
-
-#define tx4927_irq_cp0_mask(irq) ( 1 << ( irq-TX4927_IRQ_CP0_BEG+8 ) )
-
-static void
-tx4927_irq_cp0_modify(unsigned cp0_reg, unsigned clr_bits, unsigned set_bits)
-{
- unsigned long val = 0;
-
- switch (cp0_reg) {
- case CCP0_STATUS:
- val = read_c0_status();
- break;
-
- case CCP0_CAUSE:
- val = read_c0_cause();
- break;
-
- }
-
- val &= (~clr_bits);
- val |= (set_bits);
-
- switch (cp0_reg) {
- case CCP0_STATUS:{
- write_c0_status(val);
- break;
- }
- case CCP0_CAUSE:{
- write_c0_cause(val);
- break;
- }
- }
-}
-
-static void __init tx4927_irq_cp0_init(void)
-{
- int i;
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_INIT, "beg=%d end=%d\n",
- TX4927_IRQ_CP0_BEG, TX4927_IRQ_CP0_END);
-
- for (i = TX4927_IRQ_CP0_BEG; i <= TX4927_IRQ_CP0_END; i++)
- set_irq_chip_and_handler(i, &tx4927_irq_cp0_type,
- handle_level_irq);
-}
-
-static void tx4927_irq_cp0_enable(unsigned int irq)
-{
- TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_ENABLE, "irq=%d \n", irq);
-
- tx4927_irq_cp0_modify(CCP0_STATUS, 0, tx4927_irq_cp0_mask(irq));
-}
-
-static void tx4927_irq_cp0_disable(unsigned int irq)
-{
- TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_DISABLE, "irq=%d \n", irq);
-
- tx4927_irq_cp0_modify(CCP0_STATUS, tx4927_irq_cp0_mask(irq), 0);
-}
-
-/*
- * Functions for pic
- */
-u32 tx4927_irq_pic_addr(int irq)
-{
- /* MVMCP -- need to formulize this */
- irq -= TX4927_IRQ_PIC_BEG;
- switch (irq) {
- case 17:
- case 16:
- case 1:
- case 0:
- return (0xff1ff610);
-
- case 19:
- case 18:
- case 3:
- case 2:
- return (0xff1ff614);
-
- case 21:
- case 20:
- case 5:
- case 4:
- return (0xff1ff618);
-
- case 23:
- case 22:
- case 7:
- case 6:
- return (0xff1ff61c);
-
- case 25:
- case 24:
- case 9:
- case 8:
- return (0xff1ff620);
-
- case 27:
- case 26:
- case 11:
- case 10:
- return (0xff1ff624);
-
- case 29:
- case 28:
- case 13:
- case 12:
- return (0xff1ff628);
-
- case 31:
- case 30:
- case 15:
- case 14:
- return (0xff1ff62c);
-
- }
- return (0);
-}
-
-u32 tx4927_irq_pic_mask(int irq)
-{
- /* MVMCP -- need to formulize this */
- irq -= TX4927_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 tx4927_irq_pic_modify(unsigned pic_reg, unsigned clr_bits,
- unsigned set_bits)
-{
- unsigned long val = 0;
-
- val = TX4927_RD(pic_reg);
- val &= (~clr_bits);
- val |= (set_bits);
- TX4927_WR(pic_reg, val);
-}
-
-static void __init tx4927_irq_pic_init(void)
-{
- int i;
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_INIT, "beg=%d end=%d\n",
- TX4927_IRQ_PIC_BEG, TX4927_IRQ_PIC_END);
-
- for (i = TX4927_IRQ_PIC_BEG; i <= TX4927_IRQ_PIC_END; i++)
- set_irq_chip_and_handler(i, &tx4927_irq_pic_type,
- handle_level_irq);
-
- setup_irq(TX4927_IRQ_NEST_PIC_ON_CP0, &tx4927_irq_pic_action);
-
- TX4927_WR(0xff1ff640, 0x6); /* irq level mask -- only accept hightest */
- TX4927_WR(0xff1ff600, TX4927_RD(0xff1ff600) | 0x1); /* irq enable */
-}
-
-static void tx4927_irq_pic_enable(unsigned int irq)
-{
- TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_ENABLE, "irq=%d\n", irq);
-
- tx4927_irq_pic_modify(tx4927_irq_pic_addr(irq), 0,
- tx4927_irq_pic_mask(irq));
-}
-
-static void tx4927_irq_pic_disable(unsigned int irq)
-{
- TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_DISABLE, "irq=%d\n", irq);
-
- tx4927_irq_pic_modify(tx4927_irq_pic_addr(irq),
- tx4927_irq_pic_mask(irq), 0);
-}
-
-/*
- * Main init functions
- */
void __init tx4927_irq_init(void)
{
- TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "-\n");
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_cp0_init()\n");
- tx4927_irq_cp0_init();
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_pic_init()\n");
- tx4927_irq_pic_init();
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "+\n");
-}
-
-static int tx4927_irq_nested(void)
-{
- int sw_irq = 0;
- u32 level2;
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST1, "-\n");
-
- level2 = TX4927_RD(0xff1ff6a0);
- TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST2, "=level2a=0x%x\n", level2);
-
- if ((level2 & 0x10000) == 0) {
- level2 &= 0x1f;
- TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST3, "=level2b=0x%x\n", level2);
-
- sw_irq = TX4927_IRQ_PIC_BEG + level2;
- TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST3, "=sw_irq=%d\n", sw_irq);
-
- if (sw_irq == 27) {
- TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST4, "=irq-%d\n",
- sw_irq);
-
-#ifdef CONFIG_TOSHIBA_RBTX4927
- {
- sw_irq = toshiba_rbtx4927_irq_nested(sw_irq);
- }
-#endif
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST4, "=irq+%d\n",
- sw_irq);
- }
- }
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST2, "=sw_irq=%d\n", sw_irq);
-
- TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST1, "+\n");
-
- return (sw_irq);
+ mips_cpu_irq_init();
+ txx9_irq_init(TX4927_IRC_REG);
+ set_irq_chained_handler(TX4927_IRQ_NEST_PIC_ON_CP0, handle_simple_irq);
}
asmlinkage void plat_irq_dispatch(void)
@@ -424,9 +46,12 @@ asmlinkage void plat_irq_dispatch(void)
if (pending & STATUSF_IP7) /* cpu timer */
do_IRQ(TX4927_IRQ_CPU_TIMER);
else if (pending & STATUSF_IP2) { /* tx4927 pic */
- unsigned int irq = tx4927_irq_nested();
-
- if (unlikely(irq == 0)) {
+ int irq = txx9_irq();
+#ifdef CONFIG_TOSHIBA_RBTX4927
+ if (irq == TX4927_IRQ_NEST_EXT_ON_PIC)
+ irq = toshiba_rbtx4927_irq_nested(irq);
+#endif
+ if (unlikely(irq < 0)) {
spurious_interrupt();
return;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 17:27:33 +0000