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Commit 1137bef6 authored by Lucas Stach's avatar Lucas Stach
Browse files

drm/etnaviv: add function to load the initial PTA state 



On GPUs with the security feature the MTLB config is stored in the PTA.
Add a function to trigger the initial PTA load through the FE.

Signed-off-by: default avatarLucas Stach <l.stach@pengutronix.de>
parent c997c3df

drivers/gpu/drm/etnaviv/etnaviv_buffer.c

+18 −0
Original line number Diff line number Diff line
@@ -215,6 +215,24 @@ u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe 
	return buffer->user_size / 8;

}



u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu)

{

	struct etnaviv_cmdbuf *buffer = &gpu->buffer;



	lockdep_assert_held(&gpu->lock);



	buffer->user_size = 0;



	CMD_LOAD_STATE(buffer, VIVS_MMUv2_PTA_CONFIG,

		       VIVS_MMUv2_PTA_CONFIG_INDEX(0));



	CMD_END(buffer);



	buffer->user_size = ALIGN(buffer->user_size, 8);



	return buffer->user_size / 8;

}



void etnaviv_buffer_end(struct etnaviv_gpu *gpu)

{

	struct etnaviv_cmdbuf *buffer = &gpu->buffer;

drivers/gpu/drm/etnaviv/etnaviv_drv.h

+1 −0
Original line number Diff line number Diff line
@@ -86,6 +86,7 @@ int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, 
	uintptr_t ptr, u32 size, u32 flags, u32 *handle);

u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu);

u16 etnaviv_buffer_config_mmuv2(struct etnaviv_gpu *gpu, u32 mtlb_addr, u32 safe_addr);

u16 etnaviv_buffer_config_pta(struct etnaviv_gpu *gpu);

void etnaviv_buffer_end(struct etnaviv_gpu *gpu);

void etnaviv_sync_point_queue(struct etnaviv_gpu *gpu, unsigned int event);

void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, u32 exec_state,