diff options
author | Finn Thain <fthain@telegraphics.com.au> | 2007-05-01 22:32:58 +0200 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 02:59:07 +0200 |
commit | 217f6710c275118af1008bb1447d244be52d2dc3 (patch) | |
tree | afcc692e42ea227090384c6973ed2c97a8636040 /arch | |
parent | m68k: Mac nubus IRQ fixes (plan E) (diff) | |
download | linux-217f6710c275118af1008bb1447d244be52d2dc3.tar.xz linux-217f6710c275118af1008bb1447d244be52d2dc3.zip |
m68k: Mac IRQ cleanup
There are no slow IRQs on Macs since Roman Zippel's IRQ reorganisation that
went into 2.6.16 and removed mac_irq_list[] and the do_mac_irq_list()
dispatcher. (They were implemented in do_mac_irq_list() by lowering the IPL.)
Hence there's no more use for mutual exclusion in the Mac interrupt
dispatchers. Remove it.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/m68k/mac/baboon.c | 20 | ||||
-rw-r--r-- | arch/m68k/mac/oss.c | 4 | ||||
-rw-r--r-- | arch/m68k/mac/psc.c | 2 | ||||
-rw-r--r-- | arch/m68k/mac/via.c | 10 |
4 files changed, 7 insertions, 29 deletions
diff --git a/arch/m68k/mac/baboon.c b/arch/m68k/mac/baboon.c index 8ea7498cec37..673a1085984d 100644 --- a/arch/m68k/mac/baboon.c +++ b/arch/m68k/mac/baboon.c @@ -22,7 +22,7 @@ /* #define DEBUG_BABOON */ /* #define DEBUG_IRQS */ -int baboon_present,baboon_active; +int baboon_present; volatile struct baboon *baboon; irqreturn_t baboon_irq(int, void *); @@ -45,7 +45,6 @@ void __init baboon_init(void) baboon = (struct baboon *) BABOON_BASE; baboon_present = 1; - baboon_active = 0; printk("Baboon detected at %p\n", baboon); } @@ -70,9 +69,9 @@ irqreturn_t baboon_irq(int irq, void *dev_id) unsigned char events; #ifdef DEBUG_IRQS - printk("baboon_irq: mb_control %02X mb_ifr %02X mb_status %02X active %02X\n", + printk("baboon_irq: mb_control %02X mb_ifr %02X mb_status %02X\n", (uint) baboon->mb_control, (uint) baboon->mb_ifr, - (uint) baboon->mb_status, baboon_active); + (uint) baboon->mb_status); #endif if (!(events = baboon->mb_ifr & 0x07)) @@ -81,11 +80,9 @@ irqreturn_t baboon_irq(int irq, void *dev_id) irq_num = IRQ_BABOON_0; irq_bit = 1; do { - if (events & irq_bit/* & baboon_active*/) { - baboon_active &= ~irq_bit; + if (events & irq_bit) { baboon->mb_ifr &= ~irq_bit; m68k_handle_int(irq_num); - baboon_active |= irq_bit; } irq_bit <<= 1; irq_num++; @@ -99,21 +96,18 @@ irqreturn_t baboon_irq(int irq, void *dev_id) } void baboon_irq_enable(int irq) { - int irq_idx = IRQ_IDX(irq); - #ifdef DEBUG_IRQUSE printk("baboon_irq_enable(%d)\n", irq); #endif - baboon_active |= (1 << irq_idx); + /* FIXME: figure out how to mask and unmask baboon interrupt sources */ + enable_irq(IRQ_NUBUS_C); } void baboon_irq_disable(int irq) { - int irq_idx = IRQ_IDX(irq); - #ifdef DEBUG_IRQUSE printk("baboon_irq_disable(%d)\n", irq); #endif - baboon_active &= ~(1 << irq_idx); + disable_irq(IRQ_NUBUS_C); } void baboon_irq_clear(int irq) { diff --git a/arch/m68k/mac/oss.c b/arch/m68k/mac/oss.c index 6399883ae742..d7be16917efd 100644 --- a/arch/m68k/mac/oss.c +++ b/arch/m68k/mac/oss.c @@ -112,10 +112,8 @@ irqreturn_t oss_irq(int irq, void *dev_id) oss->irq_pending &= ~OSS_IP_SOUND; /* FIXME: call sound handler */ } else if (events & OSS_IP_SCSI) { - oss->irq_level[OSS_SCSI] = OSS_IRQLEV_DISABLED; oss->irq_pending &= ~OSS_IP_SCSI; m68k_handle_int(IRQ_MAC_SCSI); - oss->irq_level[OSS_SCSI] = OSS_IRQLEV_SCSI; } else { /* FIXME: error check here? */ } @@ -149,10 +147,8 @@ irqreturn_t oss_nubus_irq(int irq, void *dev_id) --i; irq_bit >>= 1; if (events & irq_bit) { - oss->irq_level[i] = OSS_IRQLEV_DISABLED; oss->irq_pending &= ~irq_bit; m68k_handle_int(NUBUS_SOURCE_BASE + i); - oss->irq_level[i] = OSS_IRQLEV_NUBUS; } } while(events & (irq_bit - 1)); return IRQ_HANDLED; diff --git a/arch/m68k/mac/psc.c b/arch/m68k/mac/psc.c index 1dba88247c6f..d66f723b17c3 100644 --- a/arch/m68k/mac/psc.c +++ b/arch/m68k/mac/psc.c @@ -147,10 +147,8 @@ irqreturn_t psc_irq(int irq, void *dev_id) irq_bit = 1; do { if (events & irq_bit) { - psc_write_byte(pIER, irq_bit); psc_write_byte(pIFR, irq_bit); m68k_handle_int(irq_num); - psc_write_byte(pIER, irq_bit | 0x80); } irq_num++; irq_bit <<= 1; diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c index 83a3bb0c0325..d5cac72eb3db 100644 --- a/arch/m68k/mac/via.c +++ b/arch/m68k/mac/via.c @@ -443,11 +443,6 @@ void __init via_nubus_init(void) /* * The generic VIA interrupt routines (shamelessly stolen from Alan Cox's * via6522.c :-), disable/pending masks added. - * - * The new interrupt architecture in macints.c takes care of a lot of the - * gruntwork for us, including tallying the interrupts and calling the - * handlers on the linked list. All we need to do here is basically generate - * the machspec interrupt number after clearing the interrupt. */ irqreturn_t via1_irq(int irq, void *dev_id) @@ -463,10 +458,8 @@ irqreturn_t via1_irq(int irq, void *dev_id) irq_bit = 1; do { if (events & irq_bit) { - via1[vIER] = irq_bit; via1[vIFR] = irq_bit; m68k_handle_int(irq_num); - via1[vIER] = irq_bit | 0x80; } ++irq_num; irq_bit <<= 1; @@ -502,11 +495,8 @@ irqreturn_t via2_irq(int irq, void *dev_id) irq_bit = 1; do { if (events & irq_bit) { - via2[gIER] = irq_bit; via2[gIFR] = irq_bit | rbv_clear; m68k_handle_int(irq_num); - if (irq_num != IRQ_MAC_NUBUS || nubus_disabled == 0) - via2[gIER] = irq_bit | 0x80; } ++irq_num; irq_bit <<= 1; |