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[POWERPC] spufs: add backing ops for privcntl register

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This change encapsulates the spu_privcntl_RW register so that it can
be written through backing ops.  This is necessary so that spu contexts
can be initialized and queued to the scheduler in spufs_run_spu.

Signed-off-by: Luke Browning <lukebr@linux.vnet.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Luke Browning 2007-12-20 16:39:59 +09:00 committed by Paul Mackerras
parent 33bfd7a738
commit cc210b3ec5
4 changed files with 28 additions and 8 deletions
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6
arch/powerpc/platforms/cell/spufs/backing_ops.c
View file

@ -268,6 +268,11 @@ static char *spu_backing_get_ls(struct spu_context *ctx)
return ctx->csa.lscsa->ls;
}
static void spu_backing_privcntl_write(struct spu_context *ctx, u64 val)
{
ctx->csa.priv2.spu_privcntl_RW = val;
}
static u32 spu_backing_runcntl_read(struct spu_context *ctx)
{
return ctx->csa.prob.spu_runcntl_RW;
@ -384,6 +389,7 @@ 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,
.privcntl_write = spu_backing_privcntl_write,
.runcntl_read = spu_backing_runcntl_read,
.runcntl_write = spu_backing_runcntl_write,
.runcntl_stop = spu_backing_runcntl_stop,

9
arch/powerpc/platforms/cell/spufs/hw_ops.c
View file

@ -206,6 +206,11 @@ static char *spu_hw_get_ls(struct spu_context *ctx)
return ctx->spu->local_store;
}
static void spu_hw_privcntl_write(struct spu_context *ctx, u64 val)
{
out_be64(&ctx->spu->priv2->spu_privcntl_RW, val);
}
static u32 spu_hw_runcntl_read(struct spu_context *ctx)
{
return in_be32(&ctx->spu->problem->spu_runcntl_RW);
@ -215,7 +220,8 @@ static void spu_hw_runcntl_write(struct spu_context *ctx, u32 val)
{
spin_lock_irq(&ctx->spu->register_lock);
if (val & SPU_RUNCNTL_ISOLATE)
out_be64(&ctx->spu->priv2->spu_privcntl_RW, 4LL);
spu_hw_privcntl_write(ctx,
SPU_PRIVCNT_LOAD_REQUEST_ENABLE_MASK);
out_be32(&ctx->spu->problem->spu_runcntl_RW, val);
spin_unlock_irq(&ctx->spu->register_lock);
}
@ -328,6 +334,7 @@ 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,
.privcntl_write = spu_hw_privcntl_write,
.runcntl_read = spu_hw_runcntl_read,
.runcntl_write = spu_hw_runcntl_write,
.runcntl_stop = spu_hw_runcntl_stop,

20
arch/powerpc/platforms/cell/spufs/run.c
View file

@ -128,10 +128,11 @@ static int spu_setup_isolated(struct spu_context *ctx)
static int spu_run_init(struct spu_context *ctx, u32 *npc)
{
unsigned long runcntl;
spuctx_switch_state(ctx, SPU_UTIL_SYSTEM);
if (ctx->flags & SPU_CREATE_ISOLATE) {
unsigned long runcntl;
if (!(ctx->ops->status_read(ctx) & SPU_STATUS_ISOLATED_STATE)) {
int ret = spu_setup_isolated(ctx);
@ -145,16 +146,21 @@ static int spu_run_init(struct spu_context *ctx, u32 *npc)
(SPU_RUNCNTL_RUNNABLE | SPU_RUNCNTL_ISOLATE);
if (runcntl == 0)
runcntl = SPU_RUNCNTL_RUNNABLE;
ctx->ops->runcntl_write(ctx, runcntl);
} else {
unsigned long mode = SPU_PRIVCNTL_MODE_NORMAL;
ctx->ops->npc_write(ctx, *npc);
unsigned long privcntl;
if (test_thread_flag(TIF_SINGLESTEP))
mode = SPU_PRIVCNTL_MODE_SINGLE_STEP;
out_be64(&ctx->spu->priv2->spu_privcntl_RW, mode);
ctx->ops->runcntl_write(ctx, SPU_RUNCNTL_RUNNABLE);
privcntl = SPU_PRIVCNTL_MODE_SINGLE_STEP;
else
privcntl = SPU_PRIVCNTL_MODE_NORMAL;
runcntl = SPU_RUNCNTL_RUNNABLE;
ctx->ops->npc_write(ctx, *npc);
ctx->ops->privcntl_write(ctx, privcntl);
}
ctx->ops->runcntl_write(ctx, runcntl);
spuctx_switch_state(ctx, SPU_UTIL_USER);
return 0;

1
arch/powerpc/platforms/cell/spufs/spufs.h
View file

@ -169,6 +169,7 @@ 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);
void (*privcntl_write) (struct spu_context *ctx, u64 data);
u32 (*runcntl_read) (struct spu_context * ctx);
void (*runcntl_write) (struct spu_context * ctx, u32 data);
void (*runcntl_stop) (struct spu_context * ctx);