[PATCH] drm/amdgpu: add debug flag to enable RAS ACA driver.

[Zhang, Hawking]

[AMD Official Use Only - AMD Internal Distribution Only]

Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: Wang, Yang(Kevin) <KevinYang.Wang at amd.com>
Sent: Tuesday, May 14, 2024 16:15
To: amd-gfx at lists.freedesktop.org
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>; Zhou1, Tao <Tao.Zhou1 at amd.com>
Subject: [PATCH] drm/amdgpu: add debug flag to enable RAS ACA driver.

Use debug_mask=0x10 (BIT.4) param to help enable RAS ACA driver.
(RAS ACA is disabled by default.)

Signed-off-by: Yang Wang <kevinyang.wang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h     | 1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c | 3 ++-  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 6 ++++++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 846c3550fbda..550a42e3961f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1171,6 +1171,7 @@ struct amdgpu_device {
        bool                            debug_largebar;
        bool                            debug_disable_soft_recovery;
        bool                            debug_use_vram_fw_buf;
+       bool                            debug_enable_ras_aca;
 };

 static inline uint32_t amdgpu_ip_version(const struct amdgpu_device *adev, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c
index 987a1b4d4503..0b1b9911bd99 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c
@@ -686,7 +686,8 @@ static void aca_manager_fini(struct aca_handle_manager *mgr)

 bool amdgpu_aca_is_enabled(struct amdgpu_device *adev)  {
-       return adev->aca.is_enabled;
+       return (adev->aca.is_enabled ||
+               adev->debug_enable_ras_aca);
 }

 int amdgpu_aca_init(struct amdgpu_device *adev) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index caf89d21b61c..a2de55ab3a6a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -129,6 +129,7 @@ enum AMDGPU_DEBUG_MASK {
        AMDGPU_DEBUG_LARGEBAR = BIT(1),
        AMDGPU_DEBUG_DISABLE_GPU_SOFT_RECOVERY = BIT(2),
        AMDGPU_DEBUG_USE_VRAM_FW_BUF = BIT(3),
+       AMDGPU_DEBUG_ENABLE_RAS_ACA = BIT(4),
 };

 unsigned int amdgpu_vram_limit = UINT_MAX; @@ -2192,6 +2193,11 @@ static void amdgpu_init_debug_options(struct amdgpu_device *adev)
                pr_info("debug: place fw in vram for frontdoor loading\n");
                adev->debug_use_vram_fw_buf = true;
        }
+
+       if (amdgpu_debug_mask & AMDGPU_DEBUG_ENABLE_RAS_ACA) {
+               pr_info("debug: enable RAS ACA driver\n");
+               adev->debug_enable_ras_aca = true;
+       }
 }

 static unsigned long amdgpu_fix_asic_type(struct pci_dev *pdev, unsigned long flags)
--
2.34.1