drm/amdkfd: Add initial VI support for KQ

This patch starts to add support for the VI APU in the KQ (kernel queue)
module.

Because most (more than 90%) of the KQ code is shared among AMD's APUs, we
chose a design that performs most/all the code in the shared KQ file
(kfd_kernel_queue.c). If there is H/W specific code to be executed,
than it is written in an asic-specific extension function for that H/W.

That asic-specific extension function is called from the shared function at the
appropriate time. This requires that for every asic-specific extension function
that is implemented in a specific ASIC, there will be an equivalent
implementation in ALL ASICs, even if those implementations are just stubs.

That way we achieve:

- Maintainability: by having one copy of most of the code, we only need to
  fix bugs at one locations

- Readability: very clear what is the shared code and what is done per ASIC

- Extensibility: very easy to add new H/W specific files/functions

Signed-off-by: Ben Goz <ben.goz@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h
index e01b77b28500..2659d936ba73 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.h
@@ -68,6 +68,7 @@ struct kernel_queue_ops {
 
 struct kernel_queue {
 	struct kernel_queue_ops ops;
+	struct kernel_queue_ops ops_asic_specific;
 
 	/* data */
 	struct kfd_dev		*dev;
@@ -85,6 +86,9 @@ struct kernel_queue {
 	struct kfd_mem_obj	*pq;
 	uint64_t		pq_gpu_addr;
 	uint32_t		*pq_kernel_addr;
+	struct kfd_mem_obj	*eop_mem;
+	uint64_t		eop_gpu_addr;
+	uint32_t		*eop_kernel_addr;
 
 	struct kfd_mem_obj	*fence_mem_obj;
 	uint64_t		fence_gpu_addr;
@@ -93,4 +97,7 @@ struct kernel_queue {
 	struct list_head	list;
 };
 
+void kernel_queue_init_cik(struct kernel_queue_ops *ops);
+void kernel_queue_init_vi(struct kernel_queue_ops *ops);
+
 #endif /* KFD_KERNEL_QUEUE_H_ */