linux-kernel - [PATCH v4 15/27] drm/amd: Load GFX9 microcode during early

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Message-ID: <20230103221852.22813-16-mario.limonciello@amd.com>
Date:   Tue, 3 Jan 2023 16:18:34 -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 v4 15/27] drm/amd: Load GFX9 microcode during early_init

If GFX9 microcode is required but not available during early init, the
firmware framebuffer will have already been released and the screen will
freeze.

Signed-off-by: Mario Limonciello <mario.limonciello@....com>
---
v3->v4:
 * Move microcode load phase to early init
v2->v3:
 * Fix issues found on real hardware where num_gfx_rings not set during
   discovery
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 58 +++++----------------------
 1 file changed, 9 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 27040821d764..4e9c230e42ca 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -1251,7 +1251,7 @@ static void gfx_v9_0_check_if_need_gfxoff(struct amdgpu_device *adev)
 }
 
 static int gfx_v9_0_init_cp_gfx_microcode(struct amdgpu_device *adev,
-					  const char *chip_name)
+					  char *chip_name)
 {
 	char fw_name[30];
 	int err;
@@ -1287,7 +1287,7 @@ static int gfx_v9_0_init_cp_gfx_microcode(struct amdgpu_device *adev,
 }
 
 static int gfx_v9_0_init_rlc_microcode(struct amdgpu_device *adev,
-					  const char *chip_name)
+				       char *chip_name)
 {
 	char fw_name[30];
 	int err;
@@ -1344,7 +1344,7 @@ static bool gfx_v9_0_load_mec2_fw_bin_support(struct amdgpu_device *adev)
 }
 
 static int gfx_v9_0_init_cp_compute_microcode(struct amdgpu_device *adev,
-					  const char *chip_name)
+					      char *chip_name)
 {
 	char fw_name[30];
 	int err;
@@ -1392,58 +1392,24 @@ static int gfx_v9_0_init_cp_compute_microcode(struct amdgpu_device *adev,
 
 static int gfx_v9_0_init_microcode(struct amdgpu_device *adev)
 {
-	const char *chip_name;
+	char ucode_prefix[30];
 	int r;
 
 	DRM_DEBUG("\n");
-
-	switch (adev->ip_versions[GC_HWIP][0]) {
-	case IP_VERSION(9, 0, 1):
-		chip_name = "vega10";
-		break;
-	case IP_VERSION(9, 2, 1):
-		chip_name = "vega12";
-		break;
-	case IP_VERSION(9, 4, 0):
-		chip_name = "vega20";
-		break;
-	case IP_VERSION(9, 2, 2):
-	case IP_VERSION(9, 1, 0):
-		if (adev->apu_flags & AMD_APU_IS_RAVEN2)
-			chip_name = "raven2";
-		else if (adev->apu_flags & AMD_APU_IS_PICASSO)
-			chip_name = "picasso";
-		else
-			chip_name = "raven";
-		break;
-	case IP_VERSION(9, 4, 1):
-		chip_name = "arcturus";
-		break;
-	case IP_VERSION(9, 3, 0):
-		if (adev->apu_flags & AMD_APU_IS_RENOIR)
-			chip_name = "renoir";
-		else
-			chip_name = "green_sardine";
-		break;
-	case IP_VERSION(9, 4, 2):
-		chip_name = "aldebaran";
-		break;
-	default:
-		BUG();
-	}
+	amdgpu_ucode_ip_version_decode(adev, GC_HWIP, ucode_prefix, sizeof(ucode_prefix));
 
 	/* No CPG in Arcturus */
 	if (adev->gfx.num_gfx_rings) {
-		r = gfx_v9_0_init_cp_gfx_microcode(adev, chip_name);
+		r = gfx_v9_0_init_cp_gfx_microcode(adev, ucode_prefix);
 		if (r)
 			return r;
 	}
 
-	r = gfx_v9_0_init_rlc_microcode(adev, chip_name);
+	r = gfx_v9_0_init_rlc_microcode(adev, ucode_prefix);
 	if (r)
 		return r;
 
-	r = gfx_v9_0_init_cp_compute_microcode(adev, chip_name);
+	r = gfx_v9_0_init_cp_compute_microcode(adev, ucode_prefix);
 	if (r)
 		return r;
 
@@ -2131,12 +2097,6 @@ static int gfx_v9_0_sw_init(void *handle)
 
 	adev->gfx.gfx_current_status = AMDGPU_GFX_NORMAL_MODE;
 
-	r = gfx_v9_0_init_microcode(adev);
-	if (r) {
-		DRM_ERROR("Failed to load gfx firmware!\n");
-		return r;
-	}
-
 	if (adev->gfx.rlc.funcs) {
 		if (adev->gfx.rlc.funcs->init) {
 			r = adev->gfx.rlc.funcs->init(adev);
@@ -4578,7 +4538,7 @@ static int gfx_v9_0_early_init(void *handle)
 	/* init rlcg reg access ctrl */
 	gfx_v9_0_init_rlcg_reg_access_ctrl(adev);
 
-	return 0;
+	return gfx_v9_0_init_microcode(adev);
 }
 
 static int gfx_v9_0_ecc_late_init(void *handle)
-- 
2.34.1