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authorIngo Molnar <mingo@elte.hu>2006-06-29 05:24:36 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-29 13:26:21 -0400
commitd1bef4ed5faf7d9872337b33c4269e45ae1bf960 (patch)
treea88c58e3102396382e9137a25a884af14421f6a6 /arch/mips/philips
parentcfb9e32f2ff32ef5265c1c80fe68dd1a7f03a604 (diff)
[PATCH] genirq: rename desc->handler to desc->chip
This patch-queue improves the generic IRQ layer to be truly generic, by adding various abstractions and features to it, without impacting existing functionality. While the queue can be best described as "fix and improve everything in the generic IRQ layer that we could think of", and thus it consists of many smaller features and lots of cleanups, the one feature that stands out most is the new 'irq chip' abstraction. The irq-chip abstraction is about describing and coding and IRQ controller driver by mapping its raw hardware capabilities [and quirks, if needed] in a straightforward way, without having to think about "IRQ flow" (level/edge/etc.) type of details. This stands in contrast with the current 'irq-type' model of genirq architectures, which 'mixes' raw hardware capabilities with 'flow' details. The patchset supports both types of irq controller designs at once, and converts i386 and x86_64 to the new irq-chip design. As a bonus side-effect of the irq-chip approach, chained interrupt controllers (master/slave PIC constructs, etc.) are now supported by design as well. The end result of this patchset intends to be simpler architecture-level code and more consolidation between architectures. We reused many bits of code and many concepts from Russell King's ARM IRQ layer, the merging of which was one of the motivations for this patchset. This patch: rename desc->handler to desc->chip. Originally i did not want to do this, because it's a big patch. But having both "desc->handler", "desc->handle_irq" and "action->handler" caused a large degree of confusion and made the code appear alot less clean than it truly is. I have also attempted a dual approach as well by introducing a desc->chip alias - but that just wasnt robust enough and broke frequently. So lets get over with this quickly. The conversion was done automatically via scripts and converts all the code in the kernel. This renaming patch is the first one amongst the patches, so that the remaining patches can stay flexible and can be merged and split up without having some big monolithic patch act as a merge barrier. [akpm@osdl.org: build fix] [akpm@osdl.org: another build fix] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/mips/philips')
-rw-r--r--arch/mips/philips/pnx8550/common/int.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/mips/philips/pnx8550/common/int.c b/arch/mips/philips/pnx8550/common/int.c
index 39ee6314f627..8f18764a2359 100644
--- a/arch/mips/philips/pnx8550/common/int.c
+++ b/arch/mips/philips/pnx8550/common/int.c
@@ -236,7 +236,7 @@ void __init arch_init_irq(void)
236 int configPR; 236 int configPR;
237 237
238 for (i = 0; i < PNX8550_INT_CP0_TOTINT; i++) { 238 for (i = 0; i < PNX8550_INT_CP0_TOTINT; i++) {
239 irq_desc[i].handler = &level_irq_type; 239 irq_desc[i].chip = &level_irq_type;
240 pnx8550_ack(i); /* mask the irq just in case */ 240 pnx8550_ack(i); /* mask the irq just in case */
241 } 241 }
242 242
@@ -273,7 +273,7 @@ void __init arch_init_irq(void)
273 /* mask/priority is still 0 so we will not get any 273 /* mask/priority is still 0 so we will not get any
274 * interrupts until it is unmasked */ 274 * interrupts until it is unmasked */
275 275
276 irq_desc[i].handler = &level_irq_type; 276 irq_desc[i].chip = &level_irq_type;
277 } 277 }
278 278
279 /* Priority level 0 */ 279 /* Priority level 0 */
@@ -282,12 +282,12 @@ void __init arch_init_irq(void)
282 /* Set int vector table address */ 282 /* Set int vector table address */
283 PNX8550_GIC_VECTOR_0 = PNX8550_GIC_VECTOR_1 = 0; 283 PNX8550_GIC_VECTOR_0 = PNX8550_GIC_VECTOR_1 = 0;
284 284
285 irq_desc[MIPS_CPU_GIC_IRQ].handler = &level_irq_type; 285 irq_desc[MIPS_CPU_GIC_IRQ].chip = &level_irq_type;
286 setup_irq(MIPS_CPU_GIC_IRQ, &gic_action); 286 setup_irq(MIPS_CPU_GIC_IRQ, &gic_action);
287 287
288 /* init of Timer interrupts */ 288 /* init of Timer interrupts */
289 for (i = PNX8550_INT_TIMER_MIN; i <= PNX8550_INT_TIMER_MAX; i++) { 289 for (i = PNX8550_INT_TIMER_MIN; i <= PNX8550_INT_TIMER_MAX; i++) {
290 irq_desc[i].handler = &level_irq_type; 290 irq_desc[i].chip = &level_irq_type;
291 } 291 }
292 292
293 /* Stop Timer 1-3 */ 293 /* Stop Timer 1-3 */
@@ -295,7 +295,7 @@ void __init arch_init_irq(void)
295 configPR |= 0x00000038; 295 configPR |= 0x00000038;
296 write_c0_config7(configPR); 296 write_c0_config7(configPR);
297 297
298 irq_desc[MIPS_CPU_TIMER_IRQ].handler = &level_irq_type; 298 irq_desc[MIPS_CPU_TIMER_IRQ].chip = &level_irq_type;
299 setup_irq(MIPS_CPU_TIMER_IRQ, &timer_action); 299 setup_irq(MIPS_CPU_TIMER_IRQ, &timer_action);
300} 300}
301 301