[POWERPC] cell: add RAS support

[powerpc.git] / arch / powerpc / platforms / cell / spufs / hw_ops.c

diff --git a/arch/powerpc/platforms/cell/spufs/hw_ops.c b/arch/powerpc/platforms/cell/spufs/hw_ops.c
index 5445719..a13a8b5 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/hw_ops.c
+++ b/arch/powerpc/platforms/cell/spufs/hw_ops.c
@@ -232,6 +232,59 @@ static void spu_hw_runcntl_stop(struct spu_context *ctx)
        spin_unlock_irq(&ctx->spu->register_lock);
 }
 
+static int spu_hw_set_mfc_query(struct spu_context * ctx, u32 mask, u32 mode)
+{
+       struct spu_problem *prob = ctx->spu->problem;
+       int ret;
+
+       spin_lock_irq(&ctx->spu->register_lock);
+       ret = -EAGAIN;
+       if (in_be32(&prob->dma_querytype_RW))
+               goto out;
+       ret = 0;
+       out_be32(&prob->dma_querymask_RW, mask);
+       out_be32(&prob->dma_querytype_RW, mode);
+out:
+       spin_unlock_irq(&ctx->spu->register_lock);
+       return ret;
+}
+
+static u32 spu_hw_read_mfc_tagstatus(struct spu_context * ctx)
+{
+       return in_be32(&ctx->spu->problem->dma_tagstatus_R);
+}
+
+static u32 spu_hw_get_mfc_free_elements(struct spu_context *ctx)
+{
+       return in_be32(&ctx->spu->problem->dma_qstatus_R);
+}
+
+static int spu_hw_send_mfc_command(struct spu_context *ctx,
+                                       struct mfc_dma_command *cmd)
+{
+       u32 status;
+       struct spu_problem *prob = ctx->spu->problem;
+
+       spin_lock_irq(&ctx->spu->register_lock);
+       out_be32(&prob->mfc_lsa_W, cmd->lsa);
+       out_be64(&prob->mfc_ea_W, cmd->ea);
+       out_be32(&prob->mfc_union_W.by32.mfc_size_tag32,
+                               cmd->size << 16 | cmd->tag);
+       out_be32(&prob->mfc_union_W.by32.mfc_class_cmd32,
+                               cmd->class << 16 | cmd->cmd);
+       status = in_be32(&prob->mfc_union_W.by32.mfc_class_cmd32);
+       spin_unlock_irq(&ctx->spu->register_lock);
+
+       switch (status & 0xffff) {
+       case 0:
+               return 0;
+       case 2:
+               return -EAGAIN;
+       default:
+               return -EINVAL;
+       }
+}
+
 struct spu_context_ops spu_hw_ops = {
        .mbox_read = spu_hw_mbox_read,
        .mbox_stat_read = spu_hw_mbox_stat_read,
@@ -252,4 +305,8 @@ struct spu_context_ops spu_hw_ops = {
        .get_ls = spu_hw_get_ls,
        .runcntl_write = spu_hw_runcntl_write,
        .runcntl_stop = spu_hw_runcntl_stop,
+       .set_mfc_query = spu_hw_set_mfc_query,
+       .read_mfc_tagstatus = spu_hw_read_mfc_tagstatus,
+       .get_mfc_free_elements = spu_hw_get_mfc_free_elements,
+       .send_mfc_command = spu_hw_send_mfc_command,
 };