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

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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: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Lucas Stach
2018-01-22 12:28:10 +01:00
parent c997c3df0e
commit 1137bef67a
2 changed files with 19 additions and 0 deletions
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18
drivers/gpu/drm/etnaviv/etnaviv_buffer.c
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@@ -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;