gpu: nvgpu: Add compression state IOCTLs

Bug 1409151

Change-Id: I29a325d7c2b481764fc82d945795d50bcb841961
Signed-off-by: Lauri Peltonen <lpeltonen@nvidia.com>

1 files changed, 75 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c b/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
index 9128959f..e5628c3f 100644
--- a/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
@@ -21,6 +21,7 @@
 #include <linux/nvhost_gpu_ioctl.h>
 
 #include "gk20a.h"
+#include "fence_gk20a.h"
 
 int gk20a_ctrl_dev_open(struct inode *inode, struct file *filp)
 {
@@ -78,6 +79,72 @@ gk20a_ctrl_ioctl_gpu_characteristics(
         return err;
 }
 
+static int gk20a_ctrl_prepare_compressible_read(
+                struct gk20a *g,
+                struct nvhost_gpu_prepare_compressible_read_args *args)
+{
+        struct nvhost_fence fence;
+        struct gk20a_fence *fence_out = NULL;
+        int ret = 0;
+        int flags = args->submit_flags;
+
+        fence.syncpt_id = args->fence.syncpt_id;
+        fence.value = args->fence.syncpt_value;
+
+        gk20a_busy(g->dev);
+        ret = gk20a_prepare_compressible_read(g, args->handle,
+                        args->request_compbits, args->offset,
+                        args->compbits_hoffset, args->compbits_voffset,
+                        args->width, args->height, args->block_height_log2,
+                        flags, &fence, &args->valid_compbits,
+                        &fence_out);
+        gk20a_idle(g->dev);
+
+        if (ret)
+                return ret;
+
+        /* Convert fence_out to something we can pass back to user space. */
+        if (flags & NVHOST_SUBMIT_GPFIFO_FLAGS_FENCE_GET) {
+                if (flags & NVHOST_SUBMIT_GPFIFO_FLAGS_SYNC_FENCE) {
+                        if (fence_out) {
+                                int fd = gk20a_fence_install_fd(fence_out);
+                                if (fd < 0)
+                                        ret = fd;
+                                else
+                                        args->fence.fd = fd;
+                        } else {
+                                args->fence.fd = -1;
+                        }
+                } else {
+                        if (fence_out) {
+                                args->fence.syncpt_id = fence_out->syncpt_id;
+                                args->fence.syncpt_value =
+                                                fence_out->syncpt_value;
+                        } else {
+                                args->fence.syncpt_id = -1;
+                                args->fence.syncpt_value = 0;
+                        }
+                }
+        }
+        gk20a_fence_put(fence_out);
+
+        return 0;
+}
+
+static int gk20a_ctrl_mark_compressible_write(
+                struct gk20a *g,
+                struct nvhost_gpu_mark_compressible_write_args *args)
+{
+        int ret = 0;
+
+        gk20a_busy(g->dev);
+        ret = gk20a_mark_compressible_write(g, args->handle,
+                        args->valid_compbits, args->offset);
+        gk20a_idle(g->dev);
+
+        return ret;
+}
+
 long gk20a_ctrl_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
         struct platform_device *dev = filp->private_data;
@@ -225,7 +292,14 @@ long gk20a_ctrl_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg
                 err = gk20a_ctrl_ioctl_gpu_characteristics(
                         g, (struct nvhost_gpu_get_characteristics *)buf);
                 break;
-
+        case NVHOST_GPU_IOCTL_PREPARE_COMPRESSIBLE_READ:
+                err = gk20a_ctrl_prepare_compressible_read(g,
+                        (struct nvhost_gpu_prepare_compressible_read_args *)buf);
+                break;
+        case NVHOST_GPU_IOCTL_MARK_COMPRESSIBLE_WRITE:
+                err = gk20a_ctrl_mark_compressible_write(g,
+                        (struct nvhost_gpu_mark_compressible_write_args *)buf);
+                break;
         default:
                 gk20a_err(dev_from_gk20a(g), "unrecognized gpu ioctl cmd: 0x%x", cmd);
                 err = -ENOTTY;