Line data    Source code

       1             : /*
       2             :  * Copyright 2012 Advanced Micro Devices, Inc.
       3             :  *
       4             :  * Permission is hereby granted, free of charge, to any person obtaining a
       5             :  * copy of this software and associated documentation files (the "Software"),
       6             :  * to deal in the Software without restriction, including without limitation
       7             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
       8             :  * and/or sell copies of the Software, and to permit persons to whom the
       9             :  * Software is furnished to do so, subject to the following conditions:
      10             :  *
      11             :  * The above copyright notice and this permission notice shall be included in
      12             :  * all copies or substantial portions of the Software.
      13             :  *
      14             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      15             :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      16             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
      17             :  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
      18             :  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
      19             :  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
      20             :  * OTHER DEALINGS IN THE SOFTWARE.
      21             :  *
      22             :  */
      23             : 
      24             : #include <dev/pci/drm/drmP.h>
      25             : #include "radeon.h"
      26             : #include "trinityd.h"
      27             : #include "trinity_dpm.h"
      28             : #include "ppsmc.h"
      29             : 
      30           0 : static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
      31             : {
      32             :         int i;
      33             :         u32 v = 0;
      34             : 
      35           0 :         WREG32(SMC_MESSAGE_0, id);
      36           0 :         for (i = 0; i < rdev->usec_timeout; i++) {
      37           0 :                 if (RREG32(SMC_RESP_0) != 0)
      38             :                         break;
      39           0 :                 udelay(1);
      40             :         }
      41           0 :         v = RREG32(SMC_RESP_0);
      42             : 
      43           0 :         if (v != 1) {
      44           0 :                 if (v == 0xFF) {
      45           0 :                         DRM_ERROR("SMC failed to handle the message!\n");
      46           0 :                         return -EINVAL;
      47           0 :                 } else if (v == 0xFE) {
      48           0 :                         DRM_ERROR("Unknown SMC message!\n");
      49           0 :                         return -EINVAL;
      50             :                 }
      51             :         }
      52             : 
      53           0 :         return 0;
      54           0 : }
      55             : 
      56           0 : int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable)
      57             : {
      58           0 :         if (enable)
      59           0 :                 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM);
      60             :         else
      61           0 :                 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);
      62           0 : }
      63             : 
      64           0 : int trinity_dpm_config(struct radeon_device *rdev, bool enable)
      65             : {
      66           0 :         if (enable)
      67           0 :                 WREG32_SMC(SMU_SCRATCH0, 1);
      68             :         else
      69           0 :                 WREG32_SMC(SMU_SCRATCH0, 0);
      70             : 
      71           0 :         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);
      72             : }
      73             : 
      74           0 : int trinity_dpm_force_state(struct radeon_device *rdev, u32 n)
      75             : {
      76           0 :         WREG32_SMC(SMU_SCRATCH0, n);
      77             : 
      78           0 :         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState);
      79             : }
      80             : 
      81           0 : int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n)
      82             : {
      83           0 :         WREG32_SMC(SMU_SCRATCH0, n);
      84             : 
      85           0 :         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled);
      86             : }
      87             : 
      88           0 : int trinity_uvd_dpm_config(struct radeon_device *rdev)
      89             : {
      90           0 :         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);
      91             : }
      92             : 
      93           0 : int trinity_dpm_no_forced_level(struct radeon_device *rdev)
      94             : {
      95           0 :         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);
      96             : }
      97             : 
      98           0 : int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev,
      99             :                                           bool enable)
     100             : {
     101           0 :         if (enable)
     102           0 :                 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment);
     103             :         else
     104           0 :                 return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);
     105           0 : }
     106             : 
     107           0 : int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev)
     108             : {
     109           0 :         return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config);
     110             : }
     111             : 
     112           0 : void trinity_acquire_mutex(struct radeon_device *rdev)
     113             : {
     114             :         int i;
     115             : 
     116           0 :         WREG32(SMC_INT_REQ, 1);
     117           0 :         for (i = 0; i < rdev->usec_timeout; i++) {
     118           0 :                 if ((RREG32(SMC_INT_REQ) & 0xffff) == 1)
     119             :                         break;
     120           0 :                 udelay(1);
     121             :         }
     122           0 : }
     123             : 
     124           0 : void trinity_release_mutex(struct radeon_device *rdev)
     125             : {
     126           0 :         WREG32(SMC_INT_REQ, 0);
     127           0 : }