diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2006-04-03 20:56:36 +0400 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2006-04-19 06:14:21 +0400 |
| commit | e4ac58afdfac792c0583af30dbd9eae53e24c78b (patch) | |
| tree | 7517bef2c515fc630e4d3d238867b91cde96f558 /arch/mips/tx4927/common/tx4927_irq.c | |
| parent | d35d473c25d43d7db3e5e18b66d558d2a631cca8 (diff) | |
| download | linux-e4ac58afdfac792c0583af30dbd9eae53e24c78b.tar.xz | |
[MIPS] Rewrite all the assembler interrupt handlers to C.
Saves like 1,600 lines of code, is way easier to debug, compilers
frequently do a better job than the cut and paste type of handlers many
boards had. And finally having all the stuff done in a single place
also means alot of bug potencial for the MT ASE is gone.
The only surviving handler in assembler is the DECstation one; I hope
Maciej will rewrite it.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/tx4927/common/tx4927_irq.c')
| -rw-r--r-- | arch/mips/tx4927/common/tx4927_irq.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/arch/mips/tx4927/common/tx4927_irq.c b/arch/mips/tx4927/common/tx4927_irq.c index 5ab2e2b76018..8ca68015cf40 100644 --- a/arch/mips/tx4927/common/tx4927_irq.c +++ b/arch/mips/tx4927/common/tx4927_irq.c @@ -525,8 +525,6 @@ static void tx4927_irq_pic_end(unsigned int irq) */ void __init tx4927_irq_init(void) { - extern asmlinkage void tx4927_irq_handler(void); - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "-\n"); TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_cp0_init()\n"); @@ -535,16 +533,12 @@ void __init tx4927_irq_init(void) TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_pic_init()\n"); tx4927_irq_pic_init(); - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, - "=Calling set_except_vector(tx4927_irq_handler)\n"); - set_except_vector(0, tx4927_irq_handler); - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "+\n"); return; } -int tx4927_irq_nested(void) +static int tx4927_irq_nested(void) { int sw_irq = 0; u32 level2; @@ -582,3 +576,25 @@ int tx4927_irq_nested(void) return (sw_irq); } + +asmlinkage void plat_irq_dispatch(struct pt_regs *regs) +{ + unsigned int pending = read_c0_status() & read_c0_cause(); + + if (pending & STATUSF_IP7) /* cpu timer */ + do_IRQ(TX4927_IRQ_CPU_TIMER, regs); + else if (pending & STATUSF_IP2) { /* tx4927 pic */ + unsigned int irq = tx4927_irq_nested(); + + if (unlikely(irq == 0)) { + spurious_interrupt(regs); + return; + } + do_IRQ(irq, regs); + } else if (pending & STATUSF_IP0) /* user line 0 */ + do_IRQ(TX4927_IRQ_USER0, regs); + else if (pending & STATUSF_IP1) /* user line 1 */ + do_IRQ(TX4927_IRQ_USER1, regs); + else + spurious_interrupt(regs); +} |