linux-kernel - [PATCH for v4.9 LTS 64/86] drm/radeon/si: load special ucode for certain MC configs

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Message-ID: <20170617222420.19316-64-alexander.levin@verizon.com>
Date:   Sat, 17 Jun 2017 22:24:49 +0000
From:   "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:     Alex Deucher <alexander.deucher@....com>,
        "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com>
Subject: [PATCH for v4.9 LTS 64/86] drm/radeon/si: load special ucode for
 certain MC configs

From: Alex Deucher <alexander.deucher@....com>

[ Upstream commit ef736d394e85b1bf1fd65ba5e5257b85f6c82325 ]

Special MC ucode is required for these memory configurations.

Acked-by: Edward O'Callaghan <funfunctor@...klore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
---
 drivers/gpu/drm/radeon/si.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 3333e8a45933..b75d809c292e 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -115,6 +115,8 @@ MODULE_FIRMWARE("radeon/hainan_rlc.bin");
 MODULE_FIRMWARE("radeon/hainan_smc.bin");
 MODULE_FIRMWARE("radeon/hainan_k_smc.bin");
 
+MODULE_FIRMWARE("radeon/si58_mc.bin");
+
 static u32 si_get_cu_active_bitmap(struct radeon_device *rdev, u32 se, u32 sh);
 static void si_pcie_gen3_enable(struct radeon_device *rdev);
 static void si_program_aspm(struct radeon_device *rdev);
@@ -1650,6 +1652,7 @@ static int si_init_microcode(struct radeon_device *rdev)
 	int err;
 	int new_fw = 0;
 	bool new_smc = false;
+	bool si58_fw = false;
 
 	DRM_DEBUG("\n");
 
@@ -1742,6 +1745,10 @@ static int si_init_microcode(struct radeon_device *rdev)
 	default: BUG();
 	}
 
+	/* this memory configuration requires special firmware */
+	if (((RREG32(MC_SEQ_MISC0) & 0xff000000) >> 24) == 0x58)
+		si58_fw = true;
+
 	DRM_INFO("Loading %s Microcode\n", new_chip_name);
 
 	snprintf(fw_name, sizeof(fw_name), "radeon/%s_pfp.bin", new_chip_name);
@@ -1845,7 +1852,10 @@ static int si_init_microcode(struct radeon_device *rdev)
 		}
 	}
 
-	snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", new_chip_name);
+	if (si58_fw)
+		snprintf(fw_name, sizeof(fw_name), "radeon/si58_mc.bin");
+	else
+		snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", new_chip_name);
 	err = request_firmware(&rdev->mc_fw, fw_name, rdev->dev);
 	if (err) {
 		snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc2.bin", chip_name);
-- 
2.11.0