From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 5 Jul 2023 22:13:43 +0000 (-0400)
Subject: drm/amdgpu/gfx9: move update_spm_vmid() out of rlc_init()
X-Git-Tag: v6.6.7~1918^2~20^2~174
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=08b6e1725dd44be584c55fce1bdc9fe7b4510a49;hp=6dda3f18bdbdc4a836980b31fdb711019a340f97;p=platform%2Fkernel%2Flinux-starfive.git

drm/amdgpu/gfx9: move update_spm_vmid() out of rlc_init()

rlc_init() is part of sw_init() so it should not touch hardware.
Additionally, calling the rlc update_spm_vmid() callback
directly invokes a gfx on/off cycle which could result in
powergating being enabled before hw init is complete.  Split
update_spm_vmid() into an internal implementation for local
use without gfxoff interaction and then the rlc callback
which includes gfxoff handling.  lbpw_init also touches
hardware so mvoe that to rlc_resume as well.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 65577ec..fc179e5 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -762,6 +762,8 @@ static void gfx_v9_0_query_ras_error_count(struct amdgpu_device *adev,
 static int gfx_v9_0_ras_error_inject(struct amdgpu_device *adev,
 				     void *inject_if, uint32_t instance_mask);
 static void gfx_v9_0_reset_ras_error_count(struct amdgpu_device *adev);
+static void gfx_v9_0_update_spm_vmid_internal(struct amdgpu_device *adev,
+					      unsigned int vmid);
 
 static void gfx_v9_0_kiq_set_resources(struct amdgpu_ring *kiq_ring,
 				uint64_t queue_mask)
@@ -1667,22 +1669,6 @@ static int gfx_v9_0_rlc_init(struct amdgpu_device *adev)
 			return r;
 	}
 
-	switch (adev->ip_versions[GC_HWIP][0]) {
-	case IP_VERSION(9, 2, 2):
-	case IP_VERSION(9, 1, 0):
-		gfx_v9_0_init_lbpw(adev);
-		break;
-	case IP_VERSION(9, 4, 0):
-		gfx_v9_4_init_lbpw(adev);
-		break;
-	default:
-		break;
-	}
-
-	/* init spm vmid with 0xf */
-	if (adev->gfx.rlc.funcs->update_spm_vmid)
-		adev->gfx.rlc.funcs->update_spm_vmid(adev, 0xf);
-
 	return 0;
 }
 
@@ -2942,12 +2928,14 @@ static int gfx_v9_0_rlc_resume(struct amdgpu_device *adev)
 	switch (adev->ip_versions[GC_HWIP][0]) {
 	case IP_VERSION(9, 2, 2):
 	case IP_VERSION(9, 1, 0):
+		gfx_v9_0_init_lbpw(adev);
 		if (amdgpu_lbpw == 0)
 			gfx_v9_0_enable_lbpw(adev, false);
 		else
 			gfx_v9_0_enable_lbpw(adev, true);
 		break;
 	case IP_VERSION(9, 4, 0):
+		gfx_v9_4_init_lbpw(adev);
 		if (amdgpu_lbpw > 0)
 			gfx_v9_0_enable_lbpw(adev, true);
 		else
@@ -2957,6 +2945,8 @@ static int gfx_v9_0_rlc_resume(struct amdgpu_device *adev)
 		break;
 	}
 
+	gfx_v9_0_update_spm_vmid_internal(adev, 0xf);
+
 	adev->gfx.rlc.funcs->start(adev);
 
 	return 0;
@@ -4881,12 +4871,11 @@ static int gfx_v9_0_update_gfx_clock_gating(struct amdgpu_device *adev,
 	return 0;
 }
 
-static void gfx_v9_0_update_spm_vmid(struct amdgpu_device *adev, unsigned vmid)
+static void gfx_v9_0_update_spm_vmid_internal(struct amdgpu_device *adev,
+					      unsigned int vmid)
 {
 	u32 reg, data;
 
-	amdgpu_gfx_off_ctrl(adev, false);
-
 	reg = SOC15_REG_OFFSET(GC, 0, mmRLC_SPM_MC_CNTL);
 	if (amdgpu_sriov_is_pp_one_vf(adev))
 		data = RREG32_NO_KIQ(reg);
@@ -4900,6 +4889,13 @@ static void gfx_v9_0_update_spm_vmid(struct amdgpu_device *adev, unsigned vmid)
 		WREG32_SOC15_NO_KIQ(GC, 0, mmRLC_SPM_MC_CNTL, data);
 	else
 		WREG32_SOC15(GC, 0, mmRLC_SPM_MC_CNTL, data);
+}
+
+static void gfx_v9_0_update_spm_vmid(struct amdgpu_device *adev, unsigned int vmid)
+{
+	amdgpu_gfx_off_ctrl(adev, false);
+
+	gfx_v9_0_update_spm_vmid_internal(adev, vmid);
 
 	amdgpu_gfx_off_ctrl(adev, true);
 }