---

yaml --- r: 17183 b: refs/heads/master c: 3a843d7 h: refs/heads/master i: 17181: 9a8215b 17179: 889b906 17175: ace1c64 17167: 056699c 17151: d245559 v: v3
git-mirror · Jan 9, 2006 · 65ee373 · 65ee373
1 parent d2dc8f9
commit 65ee373
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Showing 7 changed files with 96 additions and 25 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2a911f0bb73e67826062b7d073dd7367ca449724
+refs/heads/master: 3a843d7cd30ab6815610d9d6aa66b56df0ee1228
diff --git a/trunk/arch/powerpc/platforms/cell/spu_base.c b/trunk/arch/powerpc/platforms/cell/spu_base.c
@@ -202,12 +202,15 @@ spu_irq_class_0(int irq, void *data, struct pt_regs *regs)
 int
 spu_irq_class_0_bottom(struct spu *spu)
 {
-	unsigned long stat;
+	unsigned long stat, mask;
 
 	spu->class_0_pending = 0;
 
+	mask = in_be64(&spu->priv1->int_mask_class0_RW);
 	stat = in_be64(&spu->priv1->int_stat_class0_RW);
 
+	stat &= mask;
+
 	if (stat & 1) /* invalid MFC DMA */
 		__spu_trap_invalid_dma(spu);
 
@@ -263,13 +266,15 @@ spu_irq_class_2(int irq, void *data, struct pt_regs *regs)
 {
 	struct spu *spu;
 	unsigned long stat;
+	unsigned long mask;
 
 	spu = data;
 	stat = in_be64(&spu->priv1->int_stat_class2_RW);
+	mask = in_be64(&spu->priv1->int_mask_class2_RW);
 
-	pr_debug("class 2 interrupt %d, %lx, %lx\n", irq, stat,
-		in_be64(&spu->priv1->int_mask_class2_RW));
+	pr_debug("class 2 interrupt %d, %lx, %lx\n", irq, stat, mask);
 
+	stat &= mask;
 
 	if (stat & 1)  /* PPC core mailbox */
 		__spu_trap_mailbox(spu);

diff --git a/trunk/arch/powerpc/platforms/cell/spufs/backing_ops.c b/trunk/arch/powerpc/platforms/cell/spufs/backing_ops.c
@@ -32,6 +32,7 @@
 #include <linux/smp_lock.h>
 #include <linux/stddef.h>
 #include <linux/unistd.h>
+#include <linux/poll.h>
 
 #include <asm/io.h>
 #include <asm/spu.h>
@@ -87,6 +88,41 @@ static u32 spu_backing_mbox_stat_read(struct spu_context *ctx)
 	return ctx->csa.prob.mb_stat_R;
 }
 
+static unsigned int spu_backing_mbox_stat_poll(struct spu_context *ctx,
+					  unsigned int events)
+{
+	int ret;
+	u32 stat;
+
+	ret = 0;
+	spin_lock_irq(&ctx->csa.register_lock);
+	stat = ctx->csa.prob.mb_stat_R;
+
+	/* if the requested event is there, return the poll
+	   mask, otherwise enable the interrupt to get notified,
+	   but first mark any pending interrupts as done so
+	   we don't get woken up unnecessarily */
+
+	if (events & (POLLIN | POLLRDNORM)) {
+		if (stat & 0xff0000)
+			ret |= POLLIN | POLLRDNORM;
+		else {
+			ctx->csa.priv1.int_stat_class0_RW &= ~0x1;
+			ctx->csa.priv1.int_mask_class2_RW |= 0x1;
+		}
+	}
+	if (events & (POLLOUT | POLLWRNORM)) {
+		if (stat & 0x00ff00)
+			ret = POLLOUT | POLLWRNORM;
+		else {
+			ctx->csa.priv1.int_stat_class0_RW &= ~0x10;
+			ctx->csa.priv1.int_mask_class2_RW |= 0x10;
+		}
+	}
+	spin_unlock_irq(&ctx->csa.register_lock);
+	return ret;
+}
+
 static int spu_backing_ibox_read(struct spu_context *ctx, u32 * data)
 {
 	int ret;
@@ -252,6 +288,7 @@ static void spu_backing_runcntl_stop(struct spu_context *ctx)
 struct spu_context_ops spu_backing_ops = {
 	.mbox_read = spu_backing_mbox_read,
 	.mbox_stat_read = spu_backing_mbox_stat_read,
+	.mbox_stat_poll = spu_backing_mbox_stat_poll,
 	.ibox_read = spu_backing_ibox_read,
 	.wbox_write = spu_backing_wbox_write,
 	.signal1_read = spu_backing_signal1_read,

diff --git a/trunk/arch/powerpc/platforms/cell/spufs/file.c b/trunk/arch/powerpc/platforms/cell/spufs/file.c
@@ -389,20 +389,13 @@ static ssize_t spufs_ibox_read(struct file *file, char __user *buf,
 static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait)
 {
 	struct spu_context *ctx = file->private_data;
-	u32 mbox_stat;
 	unsigned int mask;
 
-	spu_acquire(ctx);
-
-	mbox_stat = ctx->ops->mbox_stat_read(ctx);
-
-	spu_release(ctx);
-
 	poll_wait(file, &ctx->ibox_wq, wait);
 
-	mask = 0;
-	if (mbox_stat & 0xff0000)
-		mask |= POLLIN | POLLRDNORM;
+	spu_acquire(ctx);
+	mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM);
+	spu_release(ctx);
 
 	return mask;
 }
@@ -494,18 +487,13 @@ static ssize_t spufs_wbox_write(struct file *file, const char __user *buf,
 static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait)
 {
 	struct spu_context *ctx = file->private_data;
-	u32 mbox_stat;
 	unsigned int mask;
 
-	spu_acquire(ctx);
-	mbox_stat = ctx->ops->mbox_stat_read(ctx);
-	spu_release(ctx);
-
 	poll_wait(file, &ctx->wbox_wq, wait);
 
-	mask = 0;
-	if (mbox_stat & 0x00ff00)
-		mask = POLLOUT | POLLWRNORM;
+	spu_acquire(ctx);
+	mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM);
+	spu_release(ctx);
 
 	return mask;
 }

diff --git a/trunk/arch/powerpc/platforms/cell/spufs/hw_ops.c b/trunk/arch/powerpc/platforms/cell/spufs/hw_ops.c
@@ -24,7 +24,7 @@
 #include <linux/sched.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
-#include <linux/vmalloc.h>
+#include <linux/poll.h>
 #include <linux/smp.h>
 #include <linux/smp_lock.h>
 #include <linux/stddef.h>
@@ -58,6 +58,44 @@ static u32 spu_hw_mbox_stat_read(struct spu_context *ctx)
 	return in_be32(&ctx->spu->problem->mb_stat_R);
 }
 
+static unsigned int spu_hw_mbox_stat_poll(struct spu_context *ctx,
+					  unsigned int events)
+{
+	struct spu *spu = ctx->spu;
+	struct spu_priv1 __iomem *priv1 = spu->priv1;
+	int ret = 0;
+	u32 stat;
+
+	spin_lock_irq(&spu->register_lock);
+	stat = in_be32(&spu->problem->mb_stat_R);
+
+	/* if the requested event is there, return the poll
+	   mask, otherwise enable the interrupt to get notified,
+	   but first mark any pending interrupts as done so
+	   we don't get woken up unnecessarily */
+
+	if (events & (POLLIN | POLLRDNORM)) {
+		if (stat & 0xff0000)
+			ret |= POLLIN | POLLRDNORM;
+		else {
+			out_be64(&priv1->int_stat_class2_RW, 0x1);
+			out_be64(&priv1->int_mask_class2_RW,
+				 in_be64(&priv1->int_mask_class2_RW) | 0x1);
+		}
+	}
+	if (events & (POLLOUT | POLLWRNORM)) {
+		if (stat & 0x00ff00)
+			ret = POLLOUT | POLLWRNORM;
+		else {
+			out_be64(&priv1->int_stat_class2_RW, 0x10);
+			out_be64(&priv1->int_mask_class2_RW,
+				 in_be64(&priv1->int_mask_class2_RW) | 0x10);
+		}
+	}
+	spin_unlock_irq(&spu->register_lock);
+	return ret;
+}
+
 static int spu_hw_ibox_read(struct spu_context *ctx, u32 * data)
 {
 	struct spu *spu = ctx->spu;
@@ -204,6 +242,7 @@ static void spu_hw_runcntl_stop(struct spu_context *ctx)
 struct spu_context_ops spu_hw_ops = {
 	.mbox_read = spu_hw_mbox_read,
 	.mbox_stat_read = spu_hw_mbox_stat_read,
+	.mbox_stat_poll = spu_hw_mbox_stat_poll,
 	.ibox_read = spu_hw_ibox_read,
 	.wbox_write = spu_hw_wbox_write,
 	.signal1_read = spu_hw_signal1_read,

diff --git a/trunk/arch/powerpc/platforms/cell/spufs/spufs.h b/trunk/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -66,6 +66,8 @@ struct spu_context {
 struct spu_context_ops {
 	int (*mbox_read) (struct spu_context * ctx, u32 * data);
 	 u32(*mbox_stat_read) (struct spu_context * ctx);
+	unsigned int (*mbox_stat_poll)(struct spu_context *ctx,
+					unsigned int events);
 	int (*ibox_read) (struct spu_context * ctx, u32 * data);
 	int (*wbox_write) (struct spu_context * ctx, u32 data);
 	 u32(*signal1_read) (struct spu_context * ctx);

diff --git a/trunk/arch/powerpc/platforms/cell/spufs/switch.c b/trunk/arch/powerpc/platforms/cell/spufs/switch.c
@@ -2155,8 +2155,8 @@ static void init_priv1(struct spu_state *csa)
 	    CLASS0_ENABLE_SPU_ERROR_INTR;
 	csa->priv1.int_mask_class1_RW = CLASS1_ENABLE_SEGMENT_FAULT_INTR |
 	    CLASS1_ENABLE_STORAGE_FAULT_INTR;
-	csa->priv1.int_mask_class2_RW = CLASS2_ENABLE_MAILBOX_INTR |
-	    CLASS2_ENABLE_SPU_STOP_INTR | CLASS2_ENABLE_SPU_HALT_INTR;
+	csa->priv1.int_mask_class2_RW = CLASS2_ENABLE_SPU_STOP_INTR |
+	    CLASS2_ENABLE_SPU_HALT_INTR;
 }
 
 static void init_priv2(struct spu_state *csa)