Add support to create user BOs with MC address for isp using the dma-buf
handle exported for the buffers allocated from system memory in isp driver.
Export amdgpu_bo_create_kernel() and amdgpu_bo_free_kernel() as well for
isp to allocate GTT internal buffers required for fw to run.
Signed-off-by: Pratap Nirujogi <pratap.nirujogi@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 103 +++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 4 +
2 files changed, 107 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 6faeb9e4a572..517c9567a332 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -39,6 +39,7 @@
#include "amdgpu.h"
#include "amdgpu_trace.h"
#include "amdgpu_amdkfd.h"
+#include "amdgpu_dma_buf.h"
/**
* DOC: amdgpu_object
@@ -334,6 +335,9 @@ int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
*
* Allocates and pins a BO for kernel internal use.
*
+ * This function is exported to allow the V4L2 isp device
+ * external to drm device to create and access the kernel BO.
+ *
* Note: For bo_ptr new BO is only created if bo_ptr points to NULL.
*
* Returns:
@@ -357,6 +361,77 @@ int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
return 0;
}
+EXPORT_SYMBOL(amdgpu_bo_create_kernel);
+
+/**
+ * amdgpu_bo_create_isp_user - create user BO for isp
+ *
+ * @adev: amdgpu device object
+ * @dma_buf: DMABUF handle for isp buffer
+ * @domain: where to place it
+ * @bo: used to initialize BOs in structures
+ * @gpu_addr: GPU addr of the pinned BO
+ *
+ * Imports isp DMABUF to allocate and pin a user BO for isp internal use. It does
+ * GART alloc to generate gpu_addr for BO to make it accessible through the
+ * GART aperture for ISP HW.
+ *
+ * This function is exported to allow the V4L2 isp device external to drm device
+ * to create and access the isp user BO.
+ *
+ * Returns:
+ * 0 on success, negative error code otherwise.
+ */
+int amdgpu_bo_create_isp_user(struct amdgpu_device *adev,
+ struct dma_buf *dbuf, u32 domain, struct amdgpu_bo **bo,
+ u64 *gpu_addr)
+
+{
+ struct drm_gem_object *gem_obj;
+ int r;
+
+ gem_obj = amdgpu_gem_prime_import(&adev->ddev, dbuf);
+ *bo = gem_to_amdgpu_bo(gem_obj);
+ if (!(*bo)) {
+ dev_err(adev->dev, "failed to get valid isp user bo\n");
+ return -EINVAL;
+ }
+
+ r = amdgpu_bo_reserve(*bo, false);
+ if (r) {
+ dev_err(adev->dev, "(%d) failed to reserve isp user bo\n", r);
+ return r;
+ }
+
+ r = amdgpu_bo_pin(*bo, domain);
+ if (r) {
+ dev_err(adev->dev, "(%d) isp user bo pin failed\n", r);
+ goto error_unreserve;
+ }
+
+ r = amdgpu_ttm_alloc_gart(&(*bo)->tbo);
+ if (r) {
+ dev_err(adev->dev, "%p bind failed\n", *bo);
+ goto error_unpin;
+ }
+
+ if (!WARN_ON(!gpu_addr))
+ *gpu_addr = amdgpu_bo_gpu_offset(*bo);
+
+ amdgpu_bo_unreserve(*bo);
+
+ return 0;
+
+error_unpin:
+ amdgpu_bo_unpin(*bo);
+error_unreserve:
+ amdgpu_bo_unreserve(*bo);
+ amdgpu_bo_unref(bo);
+
+ return r;
+}
+EXPORT_SYMBOL(amdgpu_bo_create_isp_user);
+
/**
* amdgpu_bo_create_kernel_at - create BO for kernel use at specific location
@@ -433,6 +508,9 @@ int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
* @cpu_addr: pointer to where the BO's CPU memory space address was stored
*
* unmaps and unpin a BO for kernel internal use.
+ *
+ * This function is exported to allow the V4L2 isp device
+ * external to drm device to free the kernel BO.
*/
void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
void **cpu_addr)
@@ -457,6 +535,31 @@ void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
if (cpu_addr)
*cpu_addr = NULL;
}
+EXPORT_SYMBOL(amdgpu_bo_free_kernel);
+
+
+/**
+ * amdgpu_bo_free_isp_user - free BO for isp use
+ *
+ * @bo: amdgpu isp user BO to free
+ *
+ * unpin and unref BO for isp internal use.
+ *
+ * This function is exported to allow the V4L2 isp device
+ * external to drm device to free the isp user BO.
+ */
+void amdgpu_bo_free_isp_user(struct amdgpu_bo *bo)
+{
+ if (bo == NULL)
+ return;
+
+ if (amdgpu_bo_reserve(bo, true) == 0) {
+ amdgpu_bo_unpin(bo);
+ amdgpu_bo_unreserve(bo);
+ }
+ amdgpu_bo_unref(&bo);
+}
+EXPORT_SYMBOL(amdgpu_bo_free_isp_user);
/* Validate bo size is bit bigger than the request domain */
static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index bc42ccbde659..17aa99b8311d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -299,6 +299,9 @@ int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
unsigned long size, int align,
u32 domain, struct amdgpu_bo **bo_ptr,
u64 *gpu_addr, void **cpu_addr);
+int amdgpu_bo_create_isp_user(struct amdgpu_device *adev,
+ struct dma_buf *dbuf, u32 domain, struct amdgpu_bo **bo,
+ u64 *gpu_addr);
int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
uint64_t offset, uint64_t size,
struct amdgpu_bo **bo_ptr, void **cpu_addr);
@@ -310,6 +313,7 @@ int amdgpu_bo_create_vm(struct amdgpu_device *adev,
struct amdgpu_bo_vm **ubo_ptr);
void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
void **cpu_addr);
+void amdgpu_bo_free_isp_user(struct amdgpu_bo *bo);
int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr);
void *amdgpu_bo_kptr(struct amdgpu_bo *bo);
void amdgpu_bo_kunmap(struct amdgpu_bo *bo);
--
2.34.1
