[PATCH] drm/amdgpu: Enable TCP channel hashing for Aldebaran

[Kasiviswanathan, Harish]

[AMD Official Use Only - Internal Distribution Only]

Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan at amd.com>

-----Original Message-----
From: Joshi, Mukul <Mukul.Joshi at amd.com> 
Sent: Thursday, May 6, 2021 3:47 PM
To: amd-gfx at lists.freedesktop.org
Cc: Kasiviswanathan, Harish <Harish.Kasiviswanathan at amd.com>; Joshi, Mukul <Mukul.Joshi at amd.com>; Zeng, Oak <Oak.Zeng at amd.com>
Subject: [PATCH] drm/amdgpu: Enable TCP channel hashing for Aldebaran

Enable TCP channel hashing to match DF hash settings for Aldebaran.

Signed-off-by: Mukul Joshi <mukul.joshi at amd.com>
Signed-off-by: Oak Zeng <Oak.Zeng at amd.com>
Reviewed-by: Joseph Greathouse <Joseph.Greathouse at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/df_v3_6.c            | 17 +++++++++++------
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c           |  3 ++-
 .../amd/include/asic_reg/df/df_3_6_sh_mask.h    |  1 +
 3 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
index 0d8459d63bac..36ba229576d8 100644
--- a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
+++ b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c
@@ -219,11 +219,11 @@ static void df_v3_6_query_hashes(struct amdgpu_device *adev)
 	adev->df.hash_status.hash_2m = false;
 	adev->df.hash_status.hash_1g = false;
 
-	if (adev->asic_type != CHIP_ARCTURUS)
-		return;
-
-	/* encoding for hash-enabled on Arcturus */
-	if (adev->df.funcs->get_fb_channel_number(adev) == 0xe) {
+	/* encoding for hash-enabled on Arcturus and Aldebaran */
+	if ((adev->asic_type == CHIP_ARCTURUS &&
+	     adev->df.funcs->get_fb_channel_number(adev) == 0xe) ||
+	     (adev->asic_type == CHIP_ALDEBARAN &&
+	      adev->df.funcs->get_fb_channel_number(adev) == 0x1e)) {
 		tmp = RREG32_SOC15(DF, 0, mmDF_CS_UMC_AON0_DfGlobalCtrl);
 		adev->df.hash_status.hash_64k = REG_GET_FIELD(tmp,
 						DF_CS_UMC_AON0_DfGlobalCtrl,
@@ -278,7 +278,12 @@ static u32 df_v3_6_get_fb_channel_number(struct amdgpu_device *adev)
 	u32 tmp;
 
 	tmp = RREG32_SOC15(DF, 0, mmDF_CS_UMC_AON0_DramBaseAddress0);
-	tmp &= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK;
+	if (adev->asic_type == CHIP_ALDEBARAN)
+		tmp &=
+		ALDEBARAN_DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK;
+	else
+		tmp &= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK;
+
 	tmp >>= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan__SHIFT;
 
 	return tmp;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 16a3b279a9ef..22608c45f07c 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -3937,7 +3937,8 @@ static void gfx_v9_0_init_tcp_config(struct amdgpu_device *adev)
 {
 	u32 tmp;
 
-	if (adev->asic_type != CHIP_ARCTURUS)
+	if (adev->asic_type != CHIP_ARCTURUS &&
+	    adev->asic_type != CHIP_ALDEBARAN)
 		return;
 
 	tmp = RREG32_SOC15(GC, 0, mmTCP_ADDR_CONFIG);
diff --git a/drivers/gpu/drm/amd/include/asic_reg/df/df_3_6_sh_mask.h b/drivers/gpu/drm/amd/include/asic_reg/df/df_3_6_sh_mask.h
index 7afa87c7ff54..f804e13b002e 100644
--- a/drivers/gpu/drm/amd/include/asic_reg/df/df_3_6_sh_mask.h
+++ b/drivers/gpu/drm/amd/include/asic_reg/df/df_3_6_sh_mask.h
@@ -50,6 +50,7 @@
 #define DF_CS_UMC_AON0_DramBaseAddress0__AddrRngVal_MASK						0x00000001L
 #define DF_CS_UMC_AON0_DramBaseAddress0__LgcyMmioHoleEn_MASK						0x00000002L
 #define DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK						0x0000003CL
+#define ALDEBARAN_DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK					0x0000007CL
 #define DF_CS_UMC_AON0_DramBaseAddress0__IntLvAddrSel_MASK						0x00000E00L
 #define DF_CS_UMC_AON0_DramBaseAddress0__DramBaseAddr_MASK						0xFFFFF000L
 
-- 
2.17.1