drivers/gpu/drm/amd/powerplay/hwmgr/cz_clockpowergating.c

   1 /*
   2  * Copyright 2015 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 "hwmgr.h"
  25 #include "cz_clockpowergating.h"
  26 #include "cz_ppsmc.h"
  27
  28 /* PhyID -> Status Mapping in DDI_PHY_GEN_STATUS
  29     0    GFX0L (3:0),                  (27:24),
  30     1    GFX0H (7:4),                  (31:28),
  31     2    GFX1L (3:0),                  (19:16),
  32     3    GFX1H (7:4),                  (23:20),
  33     4    DDIL   (3:0),                   (11: 8),
  34     5    DDIH  (7:4),                   (15:12),
  35     6    DDI2L (3:0),                   ( 3: 0),
  36     7    DDI2H (7:4),                   ( 7: 4),
  37 */
  38 #define DDI_PHY_GEN_STATUS_VAL(phyID)   (1 << ((3 - ((phyID & 0x07)/2))*8 + (phyID & 0x01)*4))
  39 #define IS_PHY_ID_USED_BY_PLL(PhyID)    (((0xF3 & (1 << PhyID)) & 0xFF) ? true : false)
  40
  41
  42 int cz_phm_set_asic_block_gating(struct pp_hwmgr *hwmgr, enum PHM_AsicBlock block, enum PHM_ClockGateSetting gating)
  43 {
  44         int ret = 0;
  45
  46         switch (block) {
  47         case PHM_AsicBlock_UVD_MVC:
  48         case PHM_AsicBlock_UVD:
  49         case PHM_AsicBlock_UVD_HD:
  50         case PHM_AsicBlock_UVD_SD:
  51                 if (gating == PHM_ClockGateSetting_StaticOff)
  52                         ret = cz_dpm_powerdown_uvd(hwmgr);
  53                 else
  54                         ret = cz_dpm_powerup_uvd(hwmgr);
  55                 break;
  56         case PHM_AsicBlock_GFX:
  57         default:
  58                 break;
  59         }
  60
  61         return ret;
  62 }
  63
  64
  65 bool cz_phm_is_safe_for_asic_block(struct pp_hwmgr *hwmgr, const struct pp_hw_power_state *state, enum PHM_AsicBlock block)
  66 {
  67         return true;
  68 }
  69
  70
  71 int cz_phm_enable_disable_gfx_power_gating(struct pp_hwmgr *hwmgr, bool enable)
  72 {
  73         return 0;
  74 }
  75
  76 int cz_phm_smu_power_up_down_pcie(struct pp_hwmgr *hwmgr, uint32_t target, bool up, uint32_t args)
  77 {
  78         /* TODO */
  79         return 0;
  80 }
  81
  82 int cz_phm_initialize_display_phy_access(struct pp_hwmgr *hwmgr, bool initialize, bool accesshw)
  83 {
  84         /* TODO */
  85         return 0;
  86 }
  87
  88 int cz_phm_get_display_phy_access_info(struct pp_hwmgr *hwmgr)
  89 {
  90         /* TODO */
  91         return 0;
  92 }
  93
  94 int cz_phm_gate_unused_display_phys(struct pp_hwmgr *hwmgr)
  95 {
  96         /* TODO */
  97         return 0;
  98 }
  99
 100 int cz_phm_ungate_all_display_phys(struct pp_hwmgr *hwmgr)
 101 {
 102         /* TODO */
 103         return 0;
 104 }
 105
 106 static int cz_tf_uvd_power_gating_initialize(struct pp_hwmgr *hwmgr, void *pInput, void *pOutput, void *pStorage, int Result)
 107 {
 108         return 0;
 109 }
 110
 111 static int cz_tf_vce_power_gating_initialize(struct pp_hwmgr *hwmgr, void *pInput, void *pOutput, void *pStorage, int Result)
 112 {
 113         return 0;
 114 }
 115
 116 int cz_enable_disable_uvd_dpm(struct pp_hwmgr *hwmgr, bool enable)
 117 {
 118         struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
 119         uint32_t dpm_features = 0;
 120
 121         if (enable &&
 122                 phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
 123                                   PHM_PlatformCaps_UVDDPM)) {
 124                 cz_hwmgr->dpm_flags |= DPMFlags_UVD_Enabled;
 125                 dpm_features |= UVD_DPM_MASK;
 126                 smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
 127                             PPSMC_MSG_EnableAllSmuFeatures, dpm_features);
 128         } else {
 129                 dpm_features |= UVD_DPM_MASK;
 130                 cz_hwmgr->dpm_flags &= ~DPMFlags_UVD_Enabled;
 131                 smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
 132                            PPSMC_MSG_DisableAllSmuFeatures, dpm_features);
 133         }
 134         return 0;
 135 }
 136
 137 int cz_enable_disable_vce_dpm(struct pp_hwmgr *hwmgr, bool enable)
 138 {
 139         struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
 140         uint32_t dpm_features = 0;
 141
 142         if (enable && phm_cap_enabled(
 143                                 hwmgr->platform_descriptor.platformCaps,
 144                                 PHM_PlatformCaps_VCEDPM)) {
 145                 cz_hwmgr->dpm_flags |= DPMFlags_VCE_Enabled;
 146                 dpm_features |= VCE_DPM_MASK;
 147                 smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
 148                             PPSMC_MSG_EnableAllSmuFeatures, dpm_features);
 149         } else {
 150                 dpm_features |= VCE_DPM_MASK;
 151                 cz_hwmgr->dpm_flags &= ~DPMFlags_VCE_Enabled;
 152                 smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
 153                            PPSMC_MSG_DisableAllSmuFeatures, dpm_features);
 154         }
 155
 156         return 0;
 157 }
 158
 159
 160 int cz_dpm_powergate_uvd(struct pp_hwmgr *hwmgr, bool bgate)
 161 {
 162         struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
 163
 164         if (cz_hwmgr->uvd_power_gated == bgate)
 165                 return 0;
 166
 167         cz_hwmgr->uvd_power_gated = bgate;
 168
 169         if (bgate) {
 170                 cgs_set_clockgating_state(hwmgr->device,
 171                                                 AMD_IP_BLOCK_TYPE_UVD,
 172                                                 AMD_CG_STATE_UNGATE);
 173                 cgs_set_powergating_state(hwmgr->device,
 174                                                 AMD_IP_BLOCK_TYPE_UVD,
 175                                                 AMD_PG_STATE_GATE);
 176                 cz_dpm_update_uvd_dpm(hwmgr, true);
 177                 cz_dpm_powerdown_uvd(hwmgr);
 178         } else {
 179                 cz_dpm_powerup_uvd(hwmgr);
 180                 cgs_set_clockgating_state(hwmgr->device,
 181                                                 AMD_IP_BLOCK_TYPE_UVD,
 182                                                 AMD_PG_STATE_GATE);
 183                 cgs_set_powergating_state(hwmgr->device,
 184                                                 AMD_IP_BLOCK_TYPE_UVD,
 185                                                 AMD_CG_STATE_UNGATE);
 186                 cz_dpm_update_uvd_dpm(hwmgr, false);
 187         }
 188
 189         return 0;
 190 }
 191
 192 int cz_dpm_powergate_vce(struct pp_hwmgr *hwmgr, bool bgate)
 193 {
 194         struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
 195
 196         if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
 197                                         PHM_PlatformCaps_VCEPowerGating)) {
 198                 if (cz_hwmgr->vce_power_gated != bgate) {
 199                         if (bgate) {
 200                                 cgs_set_clockgating_state(
 201                                                         hwmgr->device,
 202                                                         AMD_IP_BLOCK_TYPE_VCE,
 203                                                         AMD_CG_STATE_UNGATE);
 204                                 cgs_set_powergating_state(
 205                                                         hwmgr->device,
 206                                                         AMD_IP_BLOCK_TYPE_VCE,
 207                                                         AMD_PG_STATE_GATE);
 208                                 cz_enable_disable_vce_dpm(hwmgr, false);
 209                         /* TODO: to figure out why vce can't be poweroff*/
 210                                 cz_hwmgr->vce_power_gated = true;
 211                         } else {
 212                                 cz_dpm_powerup_vce(hwmgr);
 213                                 cz_hwmgr->vce_power_gated = false;
 214                                 cgs_set_clockgating_state(
 215                                                         hwmgr->device,
 216                                                         AMD_IP_BLOCK_TYPE_VCE,
 217                                                         AMD_PG_STATE_GATE);
 218                                 cgs_set_powergating_state(
 219                                                         hwmgr->device,
 220                                                         AMD_IP_BLOCK_TYPE_VCE,
 221                                                         AMD_CG_STATE_UNGATE);
 222                                 cz_dpm_update_vce_dpm(hwmgr);
 223                                 cz_enable_disable_vce_dpm(hwmgr, true);
 224                                 return 0;
 225                         }
 226                 }
 227         } else {
 228                 cz_dpm_update_vce_dpm(hwmgr);
 229                 cz_enable_disable_vce_dpm(hwmgr, true);
 230                 return 0;
 231         }
 232
 233         if (!cz_hwmgr->vce_power_gated)
 234                 cz_dpm_update_vce_dpm(hwmgr);
 235
 236         return 0;
 237 }
 238
 239
 240 static struct phm_master_table_item cz_enable_clock_power_gatings_list[] = {
 241         /*we don't need an exit table here, because there is only D3 cold on Kv*/
 242         { phm_cf_want_uvd_power_gating, cz_tf_uvd_power_gating_initialize },
 243         { phm_cf_want_vce_power_gating, cz_tf_vce_power_gating_initialize },
 244         /* to do { NULL, cz_tf_xdma_power_gating_enable }, */
 245         { NULL, NULL }
 246 };
 247
 248 struct phm_master_table_header cz_phm_enable_clock_power_gatings_master = {
 249         0,
 250         PHM_MasterTableFlag_None,
 251         cz_enable_clock_power_gatings_list
 252 };