SOC15 chips require a reset if the driver was previously loaded
because the PSP can only be loaded once between each reset.
v2: rebase, handle multiple asic funcs
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/soc15.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 8849b74078d6..fb01a6cda262 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -43,6 +43,7 @@
#include "hdp/hdp_4_0_sh_mask.h"
#include "smuio/smuio_9_0_offset.h"
#include "smuio/smuio_9_0_sh_mask.h"
+#include "mp/mp_9_0_offset.h"
#include "soc15.h"
#include "soc15_common.h"
@@ -602,6 +603,23 @@ static bool soc15_need_full_reset(struct amdgpu_device *adev)
return true;
}
+static bool soc15_need_reset_on_init(struct amdgpu_device *adev)
+{
+ u32 sol_reg;
+
+ if (adev->flags & AMD_IS_APU)
+ return false;
+
+ /* Check sOS sign of life register to confirm sys driver and sOS
+ * are already been loaded.
+ */
+ sol_reg = RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_81);
+ if (sol_reg)
+ return true;
+
+ return false;
+}
+
static const struct amdgpu_asic_funcs soc15_asic_funcs =
{
.read_disabled_bios = &soc15_read_disabled_bios,
@@ -617,6 +635,7 @@ static const struct amdgpu_asic_funcs soc15_asic_funcs =
.invalidate_hdp = &soc15_invalidate_hdp,
.need_full_reset = &soc15_need_full_reset,
.init_doorbell_index = &vega10_doorbell_index_init,
+ .need_reset_on_init = &soc15_need_reset_on_init,
};
static const struct amdgpu_asic_funcs vega20_asic_funcs =
@@ -634,6 +653,7 @@ static const struct amdgpu_asic_funcs vega20_asic_funcs =
.invalidate_hdp = &soc15_invalidate_hdp,
.need_full_reset = &soc15_need_full_reset,
.init_doorbell_index = &vega20_doorbell_index_init,
+ .need_reset_on_init = &soc15_need_reset_on_init,
};
static int soc15_common_early_init(void *handle)
--
2.20.1
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