From: Lijo Lazar <lijo.lazar@xxxxxxx>
Add functions required to suspend/resume instances of SDMA which
are part of an XCP.
Signed-off-by: Lijo Lazar <lijo.lazar@xxxxxxx>
Reviewed-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c | 36 ++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
index 6a971e15b4b0..184eb7902722 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_4_2.c
@@ -27,6 +27,7 @@
#include <linux/pci.h>
#include "amdgpu.h"
+#include "amdgpu_xcp.h"
#include "amdgpu_ucode.h"
#include "amdgpu_trace.h"
@@ -2025,3 +2026,38 @@ const struct amdgpu_ip_block_version sdma_v4_4_2_ip_block = {
.rev = 0,
.funcs = &sdma_v4_4_2_ip_funcs,
};
+
+static int sdma_v4_4_2_xcp_resume(void *handle, uint32_t inst_mask)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ int r;
+
+ if (!amdgpu_sriov_vf(adev))
+ sdma_v4_4_2_inst_init_golden_registers(adev, inst_mask);
+
+ r = sdma_v4_4_2_inst_start(adev, inst_mask);
+
+ return r;
+}
+
+static int sdma_v4_4_2_xcp_suspend(void *handle, uint32_t inst_mask)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ uint32_t tmp_mask = inst_mask;
+ int i;
+
+ for_each_inst(i, tmp_mask) {
+ amdgpu_irq_put(adev, &adev->sdma.ecc_irq,
+ AMDGPU_SDMA_IRQ_INSTANCE0 + i);
+ }
+
+ sdma_v4_4_2_inst_ctx_switch_enable(adev, false, inst_mask);
+ sdma_v4_4_2_inst_enable(adev, false, inst_mask);
+
+ return 0;
+}
+
+struct amdgpu_xcp_ip_funcs sdma_v4_4_2_xcp_funcs = {
+ .suspend = &sdma_v4_4_2_xcp_suspend,
+ .resume = &sdma_v4_4_2_xcp_resume
+};
--
2.39.2
