Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9476141c185aa131fa8b4b6ccc5c0ccf92300225
Commit: 9476141c185aa131fa8b4b6ccc5c0ccf92300225
Parent: b192541b39ed29ff82f9f2d5427f451e89617f1c
Author: Masato Noguchi <[EMAIL PROTECTED]>
AuthorDate: Thu Dec 20 16:39:59 2007 +0900
Committer: Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Fri Dec 21 19:46:20 2007 +1100
[POWERPC] spufs: don't set reserved bits in spu interrupt status
This changes the spu context switch code to not write to reserved bits
of spu interrupt status register.
The architecture book says the reserved fields should be set to zero.
Signed-off-by: Masato Noguchi <[EMAIL PROTECTED]>
Signed-off-by: Jeremy Kerr <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/cell/spufs/switch.c | 20 ++++++++++----------
include/asm-powerpc/spu.h | 2 ++
2 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c
b/arch/powerpc/platforms/cell/spufs/switch.c
index 1a7d7a0..6063c88 100644
--- a/arch/powerpc/platforms/cell/spufs/switch.c
+++ b/arch/powerpc/platforms/cell/spufs/switch.c
@@ -740,9 +740,9 @@ static inline void enable_interrupts(struct spu_state *csa,
struct spu *spu)
* (translation) interrupts.
*/
spin_lock_irq(&spu->register_lock);
- spu_int_stat_clear(spu, 0, ~0ul);
- spu_int_stat_clear(spu, 1, ~0ul);
- spu_int_stat_clear(spu, 2, ~0ul);
+ spu_int_stat_clear(spu, 0, CLASS0_INTR_MASK);
+ spu_int_stat_clear(spu, 1, CLASS1_INTR_MASK);
+ spu_int_stat_clear(spu, 2, CLASS2_INTR_MASK);
spu_int_mask_set(spu, 0, 0ul);
spu_int_mask_set(spu, 1, class1_mask);
spu_int_mask_set(spu, 2, 0ul);
@@ -899,8 +899,8 @@ static inline void wait_tag_complete(struct spu_state *csa,
struct spu *spu)
POLL_WHILE_FALSE(in_be32(&prob->dma_tagstatus_R) & mask);
local_irq_save(flags);
- spu_int_stat_clear(spu, 0, ~(0ul));
- spu_int_stat_clear(spu, 2, ~(0ul));
+ spu_int_stat_clear(spu, 0, CLASS0_INTR_MASK);
+ spu_int_stat_clear(spu, 2, CLASS2_INTR_MASK);
local_irq_restore(flags);
}
@@ -918,8 +918,8 @@ static inline void wait_spu_stopped(struct spu_state *csa,
struct spu *spu)
POLL_WHILE_TRUE(in_be32(&prob->spu_status_R) & SPU_STATUS_RUNNING);
local_irq_save(flags);
- spu_int_stat_clear(spu, 0, ~(0ul));
- spu_int_stat_clear(spu, 2, ~(0ul));
+ spu_int_stat_clear(spu, 0, CLASS0_INTR_MASK);
+ spu_int_stat_clear(spu, 2, CLASS2_INTR_MASK);
local_irq_restore(flags);
}
@@ -1395,9 +1395,9 @@ static inline void clear_interrupts(struct spu_state
*csa, struct spu *spu)
spu_int_mask_set(spu, 0, 0ul);
spu_int_mask_set(spu, 1, 0ul);
spu_int_mask_set(spu, 2, 0ul);
- spu_int_stat_clear(spu, 0, ~0ul);
- spu_int_stat_clear(spu, 1, ~0ul);
- spu_int_stat_clear(spu, 2, ~0ul);
+ spu_int_stat_clear(spu, 0, CLASS0_INTR_MASK);
+ spu_int_stat_clear(spu, 1, CLASS1_INTR_MASK);
+ spu_int_stat_clear(spu, 2, CLASS2_INTR_MASK);
spin_unlock_irq(&spu->register_lock);
}
diff --git a/include/asm-powerpc/spu.h b/include/asm-powerpc/spu.h
index 2774604..5ca30e2 100644
--- a/include/asm-powerpc/spu.h
+++ b/include/asm-powerpc/spu.h
@@ -535,11 +535,13 @@ struct spu_priv1 {
#define CLASS1_STORAGE_FAULT_INTR 0x2L
#define CLASS1_LS_COMPARE_SUSPEND_ON_GET_INTR 0x4L
#define CLASS1_LS_COMPARE_SUSPEND_ON_PUT_INTR 0x8L
+#define CLASS1_INTR_MASK 0xfL
#define CLASS2_MAILBOX_INTR 0x1L
#define CLASS2_SPU_STOP_INTR 0x2L
#define CLASS2_SPU_HALT_INTR 0x4L
#define CLASS2_SPU_DMA_TAG_GROUP_COMPLETE_INTR 0x8L
#define CLASS2_MAILBOX_THRESHOLD_INTR 0x10L
+#define CLASS2_INTR_MASK 0x1fL
u8 pad_0x158_0x180[0x28]; /* 0x158 */
u64 int_route_RW; /* 0x180 */
-
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