[SPARC64]: Send all device interrupts via one PIL.
This is the first in a series of cleanups that will hopefully
allow a seamless attempt at using the generic IRQ handling
infrastructure in the Linux kernel.
Define PIL_DEVICE_IRQ and vector all device interrupts through
there.
Get rid of the ugly pil0_dummy_{bucket,desc}, instead vector
the timer interrupt directly to a specific handler since the
timer interrupt is the only event that will be signaled on
PIL 14.
The irq_worklist is now in the per-cpu trap_block[].
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc64/cpudata.h b/include/asm-sparc64/cpudata.h
index 9d6a6db..f2cc941 100644
--- a/include/asm-sparc64/cpudata.h
+++ b/include/asm-sparc64/cpudata.h
@@ -74,8 +74,10 @@
unsigned long tsb_huge;
unsigned long tsb_huge_temp;
-/* Dcache line 8: Unused, needed to keep trap_block a power-of-2 in size. */
- unsigned long __pad2[4];
+/* Dcache line 8: IRQ work list, and keep trap_block a power-of-2 in size. */
+ unsigned int irq_worklist;
+ unsigned int __pad1;
+ unsigned long __pad2[3];
} __attribute__((aligned(64)));
extern struct trap_per_cpu trap_block[NR_CPUS];
extern void init_cur_cpu_trap(struct thread_info *);
@@ -119,6 +121,7 @@
#define TRAP_PER_CPU_CPU_LIST_PA 0xc8
#define TRAP_PER_CPU_TSB_HUGE 0xd0
#define TRAP_PER_CPU_TSB_HUGE_TEMP 0xd8
+#define TRAP_PER_CPU_IRQ_WORKLIST 0xe0
#define TRAP_BLOCK_SZ_SHIFT 8
@@ -171,11 +174,8 @@
/* Clobbers TMP, loads local processor's IRQ work area into DEST. */
#define TRAP_LOAD_IRQ_WORK(DEST, TMP) \
- __GET_CPUID(TMP) \
- sethi %hi(__irq_work), DEST; \
- sllx TMP, 6, TMP; \
- or DEST, %lo(__irq_work), DEST; \
- add DEST, TMP, DEST;
+ TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ add DEST, TRAP_PER_CPU_IRQ_WORKLIST, DEST;
/* Clobbers TMP, loads DEST with current thread info pointer. */
#define TRAP_LOAD_THREAD_REG(DEST, TMP) \
@@ -211,9 +211,10 @@
TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
ldx [DEST + TRAP_PER_CPU_PGD_PADDR], DEST;
+/* Clobbers TMP, loads local processor's IRQ work area into DEST. */
#define TRAP_LOAD_IRQ_WORK(DEST, TMP) \
- sethi %hi(__irq_work), DEST; \
- or DEST, %lo(__irq_work), DEST;
+ TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ add DEST, TRAP_PER_CPU_IRQ_WORKLIST, DEST;
#define TRAP_LOAD_THREAD_REG(DEST, TMP) \
TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \