drm/amdgpu: Add SDMA v4.4.2 XCP funcs

Add functions required to suspend/resume instances of SDMA which
are part of an XCP.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 6a971e1..184eb79 100644 (file)
--- 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
+};