[PATCH] drm/amdgpu: Increase MES log buffer to dump mes scratch data

[Liu, Shaoyun]

[AMD Official Use Only - AMD Internal Distribution Only]

Ping .

-----Original Message-----
From: Liu, Shaoyun <Shaoyun.Liu at amd.com>
Sent: Thursday, October 10, 2024 12:10 PM
To: amd-gfx at lists.freedesktop.org
Cc: Liu, Shaoyun <Shaoyun.Liu at amd.com>
Subject: [PATCH] drm/amdgpu: Increase MES log buffer to dump mes scratch data

MES internal scratch data is useful for mes debug, it can only located in VRAM, change the allocation type and increase size for mes 11

Signed-off-by: shaoyunl <shaoyun.liu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c |  2 +-  drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h |  1 +  drivers/gpu/drm/amd/amdgpu/mes_v11_0.c  | 12 +++++++++++-
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
index 83d0f731fb65..bf584e9bcce4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -104,7 +104,7 @@ static int amdgpu_mes_event_log_init(struct amdgpu_device *adev)
                return 0;

        r = amdgpu_bo_create_kernel(adev, adev->mes.event_log_size, PAGE_SIZE,
-                                   AMDGPU_GEM_DOMAIN_GTT,
+                                   AMDGPU_GEM_DOMAIN_VRAM,
                                    &adev->mes.event_log_gpu_obj,
                                    &adev->mes.event_log_gpu_addr,
                                    &adev->mes.event_log_cpu_addr); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
index 45e3508f0f8e..79f13d7e5e16 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
@@ -40,6 +40,7 @@
 #define AMDGPU_MES_VERSION_MASK                0x00000fff
 #define AMDGPU_MES_API_VERSION_MASK    0x00fff000
 #define AMDGPU_MES_FEAT_VERSION_MASK   0xff000000
+#define AMDGPU_MES_MSCRATCH_SIZE       0x8000

 enum amdgpu_mes_priority_level {
        AMDGPU_MES_PRIORITY_LEVEL_LOW       = 0,
diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
index 03bf865fbdd4..aa2e9ef4ff12 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
@@ -913,6 +913,16 @@ static void mes_v11_0_enable(struct amdgpu_device *adev, bool enable)
        uint32_t pipe, data = 0;

        if (enable) {
+               if (amdgpu_mes_log_enable) {
+                       WREG32_SOC15(GC, 0, regCP_MES_MSCRATCH_LO,
+                               lower_32_bits(adev->mes.event_log_gpu_addr + AMDGPU_MES_LOG_BUFFER_SIZE));
+                       WREG32_SOC15(GC, 0, regCP_MES_MSCRATCH_HI,
+                               upper_32_bits(adev->mes.event_log_gpu_addr + AMDGPU_MES_LOG_BUFFER_SIZE));
+                       dev_info(adev->dev, "Setup CP MES MSCRATCH address : 0x%x. 0x%x\n",
+                               RREG32_SOC15(GC, 0, regCP_MES_MSCRATCH_HI),
+                               RREG32_SOC15(GC, 0, regCP_MES_MSCRATCH_LO));
+               }
+
                data = RREG32_SOC15(GC, 0, regCP_MES_CNTL);
                data = REG_SET_FIELD(data, CP_MES_CNTL, MES_PIPE0_RESET, 1);
                data = REG_SET_FIELD(data, CP_MES_CNTL, @@ -1375,7 +1385,7 @@ static int mes_v11_0_sw_init(struct amdgpu_ip_block *ip_block)
        adev->mes.kiq_hw_init = &mes_v11_0_kiq_hw_init;
        adev->mes.kiq_hw_fini = &mes_v11_0_kiq_hw_fini;

-       adev->mes.event_log_size = AMDGPU_MES_LOG_BUFFER_SIZE;
+       adev->mes.event_log_size = AMDGPU_MES_LOG_BUFFER_SIZE +
+AMDGPU_MES_MSCRATCH_SIZE;

        r = amdgpu_mes_init(adev);
        if (r)
--
2.34.1