linux-kernel - [PATCH v5 19/45] drm/amd: Load GFX11 microcode during early

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Date:   Wed, 4 Jan 2023 10:40:08 -0600
From:   Mario Limonciello <mario.limonciello@....com>
To:     Alex Deucher <alexander.deucher@....com>,
        <linux-kernel@...r.kernel.org>
CC:     Javier Martinez Canillas <javierm@...hat.com>,
        Carlos Soriano Sanchez <csoriano@...hat.com>,
        <amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
        David Airlie <airlied@...il.com>,
        "Daniel Vetter" <daniel@...ll.ch>, <christian.koenig@....com>,
        Lazar Lijo <Lijo.Lazar@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>
Subject: [PATCH v5 19/45] drm/amd: Load GFX11 microcode during early_init

If GFX11 microcode is required but not available during early init, the
firmware framebuffer will have already been released and the screen will
freeze.

Move the request for GFX11 microcode into the early_init phase
so that if it's not available, driver init will fail.

Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 22 ++++++----------------
 1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index ce018331b093..28efea3b9070 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -532,6 +532,9 @@ static int gfx_v11_0_init_microcode(struct amdgpu_device *adev)
 		amdgpu_gfx_cp_init_microcode(adev, AMDGPU_UCODE_ID_CP_MEC1_JT);
 	}
 
+	if (adev->firmware.load_type == AMDGPU_FW_LOAD_RLC_BACKDOOR_AUTO)
+		err = gfx_v11_0_init_toc_microcode(adev, ucode_prefix);
+
 	/* only one MEC for gfx 11.0.0. */
 	adev->gfx.mec2_fw = NULL;
 
@@ -682,19 +685,11 @@ static void gfx_v11_0_mec_fini(struct amdgpu_device *adev)
 	amdgpu_bo_free_kernel(&adev->gfx.mec.mec_fw_data_obj, NULL, NULL);
 }
 
-static int gfx_v11_0_me_init(struct amdgpu_device *adev)
+static void gfx_v11_0_me_init(struct amdgpu_device *adev)
 {
-	int r;
-
 	bitmap_zero(adev->gfx.me.queue_bitmap, AMDGPU_MAX_GFX_QUEUES);
 
 	amdgpu_gfx_graphics_queue_acquire(adev);
-
-	r = gfx_v11_0_init_microcode(adev);
-	if (r)
-		DRM_ERROR("Failed to load gfx firmware!\n");
-
-	return r;
 }
 
 static int gfx_v11_0_mec_init(struct amdgpu_device *adev)
@@ -1307,9 +1302,7 @@ static int gfx_v11_0_sw_init(void *handle)
 		}
 	}
 
-	r = gfx_v11_0_me_init(adev);
-	if (r)
-		return r;
+	gfx_v11_0_me_init(adev);
 
 	r = gfx_v11_0_rlc_init(adev);
 	if (r) {
@@ -1377,9 +1370,6 @@ static int gfx_v11_0_sw_init(void *handle)
 
 	/* allocate visible FB for rlc auto-loading fw */
 	if (adev->firmware.load_type == AMDGPU_FW_LOAD_RLC_BACKDOOR_AUTO) {
-		r = gfx_v11_0_init_toc_microcode(adev);
-		if (r)
-			dev_err(adev->dev, "Failed to load toc firmware!\n");
 		r = gfx_v11_0_rlc_autoload_buffer_init(adev);
 		if (r)
 			return r;
@@ -4648,7 +4638,7 @@ static int gfx_v11_0_early_init(void *handle)
 
 	gfx_v11_0_init_rlcg_reg_access_ctrl(adev);
 
-	return 0;
+	return gfx_v11_0_init_microcode(adev);
 }
 
 static int gfx_v11_0_ras_late_init(void *handle)
-- 
2.34.1