Fixes mclk stability on certain asics.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=75992

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Cc: stable at vger.kernel.org
---
 drivers/gpu/drm/radeon/cik.c          | 25 ++++++++++++++++---------
 drivers/gpu/drm/radeon/radeon_ucode.h |  4 +++-
 2 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 0ae991d..ab36839 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -38,6 +38,7 @@ MODULE_FIRMWARE("radeon/BONAIRE_me.bin");
 MODULE_FIRMWARE("radeon/BONAIRE_ce.bin");
 MODULE_FIRMWARE("radeon/BONAIRE_mec.bin");
 MODULE_FIRMWARE("radeon/BONAIRE_mc.bin");
+MODULE_FIRMWARE("radeon/BONAIRE_mc2.bin");
 MODULE_FIRMWARE("radeon/BONAIRE_rlc.bin");
 MODULE_FIRMWARE("radeon/BONAIRE_sdma.bin");
 MODULE_FIRMWARE("radeon/BONAIRE_smc.bin");
@@ -46,6 +47,7 @@ MODULE_FIRMWARE("radeon/HAWAII_me.bin");
 MODULE_FIRMWARE("radeon/HAWAII_ce.bin");
 MODULE_FIRMWARE("radeon/HAWAII_mec.bin");
 MODULE_FIRMWARE("radeon/HAWAII_mc.bin");
+MODULE_FIRMWARE("radeon/HAWAII_mc2.bin");
 MODULE_FIRMWARE("radeon/HAWAII_rlc.bin");
 MODULE_FIRMWARE("radeon/HAWAII_sdma.bin");
 MODULE_FIRMWARE("radeon/HAWAII_smc.bin");
@@ -1703,7 +1705,7 @@ int ci_mc_load_microcode(struct radeon_device *rdev)
        const __be32 *fw_data;
        u32 running, blackout = 0;
        u32 *io_mc_regs;
-       int i, ucode_size, regs_size;
+       int i, regs_size, ucode_size = rdev->mc_fw->size / 4;

        if (!rdev->mc_fw)
                return -EINVAL;
@@ -1711,12 +1713,10 @@ int ci_mc_load_microcode(struct radeon_device *rdev)
        switch (rdev->family) {
        case CHIP_BONAIRE:
                io_mc_regs = (u32 *)&bonaire_io_mc_regs;
-               ucode_size = CIK_MC_UCODE_SIZE;
                regs_size = BONAIRE_IO_MC_REGS_SIZE;
                break;
        case CHIP_HAWAII:
                io_mc_regs = (u32 *)&hawaii_io_mc_regs;
-               ucode_size = HAWAII_MC_UCODE_SIZE;
                regs_size = HAWAII_IO_MC_REGS_SIZE;
                break;
        default:
@@ -1783,7 +1783,7 @@ static int cik_init_microcode(struct radeon_device *rdev)
        const char *chip_name;
        size_t pfp_req_size, me_req_size, ce_req_size,
                mec_req_size, rlc_req_size, mc_req_size = 0,
-               sdma_req_size, smc_req_size = 0;
+               sdma_req_size, smc_req_size = 0, mc2_req_size = 0;
        char fw_name[30];
        int err;

@@ -1797,7 +1797,8 @@ static int cik_init_microcode(struct radeon_device *rdev)
                ce_req_size = CIK_CE_UCODE_SIZE * 4;
                mec_req_size = CIK_MEC_UCODE_SIZE * 4;
                rlc_req_size = BONAIRE_RLC_UCODE_SIZE * 4;
-               mc_req_size = CIK_MC_UCODE_SIZE * 4;
+               mc_req_size = BONAIRE_MC_UCODE_SIZE * 4;
+               mc2_req_size = BONAIRE_MC2_UCODE_SIZE * 4;
                sdma_req_size = CIK_SDMA_UCODE_SIZE * 4;
                smc_req_size = ALIGN(BONAIRE_SMC_UCODE_SIZE, 4);
                break;
@@ -1809,6 +1810,7 @@ static int cik_init_microcode(struct radeon_device *rdev)
                mec_req_size = CIK_MEC_UCODE_SIZE * 4;
                rlc_req_size = BONAIRE_RLC_UCODE_SIZE * 4;
                mc_req_size = HAWAII_MC_UCODE_SIZE * 4;
+               mc2_req_size = HAWAII_MC2_UCODE_SIZE * 4;
                sdma_req_size = CIK_SDMA_UCODE_SIZE * 4;
                smc_req_size = ALIGN(HAWAII_SMC_UCODE_SIZE, 4);
                break;
@@ -1904,11 +1906,16 @@ static int cik_init_microcode(struct radeon_device 
*rdev)

        /* No SMC, MC ucode on APUs */
        if (!(rdev->flags & RADEON_IS_IGP)) {
-               snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", 
chip_name);
+               snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc2.bin", 
chip_name);
                err = request_firmware(&rdev->mc_fw, fw_name, rdev->dev);
-               if (err)
-                       goto out;
-               if (rdev->mc_fw->size != mc_req_size) {
+               if (err) {
+                       snprintf(fw_name, sizeof(fw_name), "radeon/%s_mc.bin", 
chip_name);
+                       err = request_firmware(&rdev->mc_fw, fw_name, 
rdev->dev);
+                       if (err)
+                               goto out;
+               }
+               if ((rdev->mc_fw->size != mc_req_size) &&
+                   (rdev->mc_fw->size != mc2_req_size)){
                        printk(KERN_ERR
                               "cik_mc: Bogus length %zu in firmware \"%s\"\n",
                               rdev->mc_fw->size, fw_name);
diff --git a/drivers/gpu/drm/radeon/radeon_ucode.h 
b/drivers/gpu/drm/radeon/radeon_ucode.h
index f415548..58d1293 100644
--- a/drivers/gpu/drm/radeon/radeon_ucode.h
+++ b/drivers/gpu/drm/radeon/radeon_ucode.h
@@ -61,8 +61,10 @@
 #define PITCAIRN_MC_UCODE_SIZE       7775
 #define VERDE_MC_UCODE_SIZE          7875
 #define OLAND_MC_UCODE_SIZE          7863
-#define CIK_MC_UCODE_SIZE            7866
+#define BONAIRE_MC_UCODE_SIZE        7866
+#define BONAIRE_MC2_UCODE_SIZE       7948
 #define HAWAII_MC_UCODE_SIZE         7933
+#define HAWAII_MC2_UCODE_SIZE        8091

 /* SDMA */
 #define CIK_SDMA_UCODE_SIZE          1050
-- 
1.8.3.1

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