drm/radeon: make missing smc ucode non-fatal

The smc ucode is required for dpm (dynamic power
management), but if it's missing just skip dpm setup
and don't disable acceleration.

Should fix:
https://bugs.freedesktop.org/show_bug.cgi?id=67876

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 12cebe4..ccb4f8b 100644 (file)
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -794,9 +794,13 @@ int ni_init_microcode(struct radeon_device *rdev)
        if ((rdev->family >= CHIP_BARTS) && (rdev->family <= CHIP_CAYMAN)) {
                snprintf(fw_name, sizeof(fw_name), "radeon/%s_smc.bin", chip_name);
                err = request_firmware(&rdev->smc_fw, fw_name, rdev->dev);
-               if (err)
-                       goto out;
-               if (rdev->smc_fw->size != smc_req_size) {
+               if (err) {
+                       printk(KERN_ERR
+                              "smc: error loading firmware \"%s\"\n",
+                              fw_name);
+                       release_firmware(rdev->smc_fw);
+                       rdev->smc_fw = NULL;
+               } else if (rdev->smc_fw->size != smc_req_size) {
                        printk(KERN_ERR
                               "ni_mc: Bogus length %zu in firmware \"%s\"\n",
                               rdev->mc_fw->size, fw_name);

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index af84804..e66e720 100644 (file)
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2299,9 +2299,13 @@ int r600_init_microcode(struct radeon_device *rdev)
        if ((rdev->family >= CHIP_RV770) && (rdev->family <= CHIP_HEMLOCK)) {
                snprintf(fw_name, sizeof(fw_name), "radeon/%s_smc.bin", smc_chip_name);
                err = request_firmware(&rdev->smc_fw, fw_name, rdev->dev);
-               if (err)
-                       goto out;
-               if (rdev->smc_fw->size != smc_req_size) {
+               if (err) {
+                       printk(KERN_ERR
+                              "smc: error loading firmware \"%s\"\n",
+                              fw_name);
+                       release_firmware(rdev->smc_fw);
+                       rdev->smc_fw = NULL;
+               } else if (rdev->smc_fw->size != smc_req_size) {
                        printk(KERN_ERR
                               "smc: Bogus length %zu in firmware \"%s\"\n",
                               rdev->smc_fw->size, fw_name);

diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 6a7a80b..c557850 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -1176,9 +1176,13 @@ int radeon_pm_init(struct radeon_device *rdev)
        case CHIP_VERDE:
        case CHIP_OLAND:
        case CHIP_HAINAN:
-               /* DPM requires the RLC */
+               /* DPM requires the RLC, RV770+ dGPU requires SMC */
                if (!rdev->rlc_fw)
                        rdev->pm.pm_method = PM_METHOD_PROFILE;
+               else if ((rdev->family >= CHIP_RV770) &&
+                        (!(rdev->flags & RADEON_IS_IGP)) &&
+                        (!rdev->smc_fw))
+                       rdev->pm.pm_method = PM_METHOD_PROFILE;
                else if (radeon_dpm == 1)
                        rdev->pm.pm_method = PM_METHOD_DPM;
                else

diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 6a2dca4..daa8d2d 100644 (file)
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -1663,9 +1663,13 @@ static int si_init_microcode(struct radeon_device *rdev)
 
        snprintf(fw_name, sizeof(fw_name), "radeon/%s_smc.bin", chip_name);
        err = request_firmware(&rdev->smc_fw, fw_name, rdev->dev);
-       if (err)
-               goto out;
-       if (rdev->smc_fw->size != smc_req_size) {
+       if (err) {
+               printk(KERN_ERR
+                      "smc: error loading firmware \"%s\"\n",
+                      fw_name);
+               release_firmware(rdev->smc_fw);
+               rdev->smc_fw = NULL;
+       } else if (rdev->smc_fw->size != smc_req_size) {
                printk(KERN_ERR
                       "si_smc: Bogus length %zu in firmware \"%s\"\n",
                       rdev->smc_fw->size, fw_name);