Create a per-instance address spaces when a new DRM file instance is
opened assuming the target supports it and the underlying
infrastructure exists. If the operation is unsupported fall back
quietly to use the global pagetable.
Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/msm_drv.c | 31 ++++++++++++++++++++++++++++---
1 file changed, 28 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 74dd09db93d7..24d23293b090 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -22,6 +22,7 @@
#include "msm_fence.h"
#include "msm_gpu.h"
#include "msm_kms.h"
+#include "msm_gem.h"
/*
@@ -511,7 +512,27 @@ static int context_init(struct drm_device *dev, struct drm_file *file)
msm_submitqueue_init(dev, ctx);
- ctx->aspace = priv->gpu->aspace;
+ /* FIXME: Do we want a dynamic name of some sort? */
+ /* FIXME: We need a smarter way to set the range based on target */
+
+ ctx->aspace = msm_gem_address_space_create_instance(
+ priv->gpu->aspace->mmu, "gpu", 0x100000000, 0x1ffffffff);
+
+ if (IS_ERR(ctx->aspace)) {
+ int ret = PTR_ERR(ctx->aspace);
+
+ /*
+ * if per-instance pagetables are not supported, fall back to
+ * using the generic address space
+ */
+ if (ret == -EOPNOTSUPP)
+ ctx->aspace = priv->gpu->aspace;
+ else {
+ kfree(ctx);
+ return ret;
+ }
+ }
+
file->driver_priv = ctx;
return 0;
@@ -527,8 +548,12 @@ static int msm_open(struct drm_device *dev, struct drm_file *file)
return context_init(dev, file);
}
-static void context_close(struct msm_file_private *ctx)
+static void context_close(struct msm_drm_private *priv,
+ struct msm_file_private *ctx)
{
+ if (ctx && ctx->aspace != priv->gpu->aspace)
+ msm_gem_address_space_put(ctx->aspace);
+
msm_submitqueue_close(ctx);
kfree(ctx);
}
@@ -543,7 +568,7 @@ static void msm_postclose(struct drm_device *dev, struct drm_file *file)
priv->lastctx = NULL;
mutex_unlock(&dev->struct_mutex);
- context_close(ctx);
+ context_close(priv, ctx);
}
static irqreturn_t msm_irq(int irq, void *arg)
--
2.16.1
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