From: Jeremy Kerr Date: Mon, 20 Nov 2006 17:45:09 +0000 (+0100) Subject: [POWERPC] spufs: Add runcntrl read accessors X-Git-Tag: v2.6.20-rc2~6^2~13^2~13^2~81 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=3960c260204bc33404a6e54e9dcd44f1f83bc701;p=linux-2.6-omap-h63xx.git [POWERPC] spufs: Add runcntrl read accessors This change adds a read accessor for the SPE problem-state run control register. This is required for for applying (userspace) changes made to the run control register while the SPE is stopped - simply asserting the master run control bit is not sufficient. My next patch for isolated-mode setup requires this. Signed-off-by: Jeremy Kerr Signed-off-by: Arnd Bergmann Signed-off-by: Paul Mackerras --- diff --git a/arch/powerpc/platforms/cell/spufs/backing_ops.c b/arch/powerpc/platforms/cell/spufs/backing_ops.c index 4a8e998c6be..1898f0d3a8b 100644 --- a/arch/powerpc/platforms/cell/spufs/backing_ops.c +++ b/arch/powerpc/platforms/cell/spufs/backing_ops.c @@ -268,6 +268,11 @@ static char *spu_backing_get_ls(struct spu_context *ctx) return ctx->csa.lscsa->ls; } +static u32 spu_backing_runcntl_read(struct spu_context *ctx) +{ + return ctx->csa.prob.spu_runcntl_RW; +} + static void spu_backing_runcntl_write(struct spu_context *ctx, u32 val) { spin_lock(&ctx->csa.register_lock); @@ -363,6 +368,7 @@ struct spu_context_ops spu_backing_ops = { .npc_write = spu_backing_npc_write, .status_read = spu_backing_status_read, .get_ls = spu_backing_get_ls, + .runcntl_read = spu_backing_runcntl_read, .runcntl_write = spu_backing_runcntl_write, .master_start = spu_backing_master_start, .master_stop = spu_backing_master_stop, diff --git a/arch/powerpc/platforms/cell/spufs/hw_ops.c b/arch/powerpc/platforms/cell/spufs/hw_ops.c index 69fc342e063..ae42e03b8c8 100644 --- a/arch/powerpc/platforms/cell/spufs/hw_ops.c +++ b/arch/powerpc/platforms/cell/spufs/hw_ops.c @@ -207,6 +207,11 @@ static char *spu_hw_get_ls(struct spu_context *ctx) return ctx->spu->local_store; } +static u32 spu_hw_runcntl_read(struct spu_context *ctx) +{ + return in_be32(&ctx->spu->problem->spu_runcntl_RW); +} + static void spu_hw_runcntl_write(struct spu_context *ctx, u32 val) { spin_lock_irq(&ctx->spu->register_lock); @@ -307,6 +312,7 @@ struct spu_context_ops spu_hw_ops = { .npc_write = spu_hw_npc_write, .status_read = spu_hw_status_read, .get_ls = spu_hw_get_ls, + .runcntl_read = spu_hw_runcntl_read, .runcntl_write = spu_hw_runcntl_write, .master_start = spu_hw_master_start, .master_stop = spu_hw_master_stop, diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h index 135fbb53d8e..ca56b9b11c1 100644 --- a/arch/powerpc/platforms/cell/spufs/spufs.h +++ b/arch/powerpc/platforms/cell/spufs/spufs.h @@ -115,6 +115,7 @@ struct spu_context_ops { void (*npc_write) (struct spu_context * ctx, u32 data); u32(*status_read) (struct spu_context * ctx); char*(*get_ls) (struct spu_context * ctx); + u32 (*runcntl_read) (struct spu_context * ctx); void (*runcntl_write) (struct spu_context * ctx, u32 data); void (*master_start) (struct spu_context * ctx); void (*master_stop) (struct spu_context * ctx);