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![Alex Deucher](/assets/img/avatar_default.png)
smu_init allocates buffers and initializes them. It does not touch the hw. There is no need to do it again on resume. It should really be part of sw_init (and smu_fini should be part of sw_fini), but we need the firmware sizes from the other IPs for firmware loading so we have to wait until sw init is done for all other IPs. Reviewed-by: Sonny Jiang <Sonny.Jiang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
195 lines
4.7 KiB
C
195 lines
4.7 KiB
C
/*
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* Copyright 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <linux/firmware.h>
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#include "drmP.h"
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#include "amdgpu.h"
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#include "iceland_smumgr.h"
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MODULE_FIRMWARE("amdgpu/topaz_smc.bin");
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static void iceland_dpm_set_funcs(struct amdgpu_device *adev);
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static int iceland_dpm_early_init(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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iceland_dpm_set_funcs(adev);
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return 0;
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}
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static int iceland_dpm_init_microcode(struct amdgpu_device *adev)
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{
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char fw_name[30] = "amdgpu/topaz_smc.bin";
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int err;
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err = request_firmware(&adev->pm.fw, fw_name, adev->dev);
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if (err)
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goto out;
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err = amdgpu_ucode_validate(adev->pm.fw);
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out:
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if (err) {
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DRM_ERROR("Failed to load firmware \"%s\"", fw_name);
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release_firmware(adev->pm.fw);
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adev->pm.fw = NULL;
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}
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return err;
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}
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static int iceland_dpm_sw_init(void *handle)
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{
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int ret;
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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ret = iceland_dpm_init_microcode(adev);
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if (ret)
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return ret;
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return 0;
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}
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static int iceland_dpm_sw_fini(void *handle)
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{
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return 0;
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}
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static int iceland_dpm_hw_init(void *handle)
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{
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int ret;
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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mutex_lock(&adev->pm.mutex);
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/* smu init only needs to be called at startup, not resume.
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* It should be in sw_init, but requires the fw info gathered
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* in sw_init from other IP modules.
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*/
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ret = iceland_smu_init(adev);
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if (ret) {
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DRM_ERROR("SMU initialization failed\n");
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goto fail;
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}
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ret = iceland_smu_start(adev);
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if (ret) {
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DRM_ERROR("SMU start failed\n");
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goto fail;
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}
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mutex_unlock(&adev->pm.mutex);
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return 0;
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fail:
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adev->firmware.smu_load = false;
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mutex_unlock(&adev->pm.mutex);
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return -EINVAL;
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}
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static int iceland_dpm_hw_fini(void *handle)
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{
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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mutex_lock(&adev->pm.mutex);
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/* smu fini only needs to be called at teardown, not suspend.
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* It should be in sw_fini, but we put it here for symmetry
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* with smu init.
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*/
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iceland_smu_fini(adev);
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mutex_unlock(&adev->pm.mutex);
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return 0;
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}
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static int iceland_dpm_suspend(void *handle)
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{
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return 0;
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}
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static int iceland_dpm_resume(void *handle)
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{
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int ret;
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struct amdgpu_device *adev = (struct amdgpu_device *)handle;
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mutex_lock(&adev->pm.mutex);
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ret = iceland_smu_start(adev);
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if (ret) {
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DRM_ERROR("SMU start failed\n");
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goto fail;
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}
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fail:
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mutex_unlock(&adev->pm.mutex);
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return ret;
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}
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static int iceland_dpm_set_clockgating_state(void *handle,
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enum amd_clockgating_state state)
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{
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return 0;
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}
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static int iceland_dpm_set_powergating_state(void *handle,
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enum amd_powergating_state state)
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{
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return 0;
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}
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const struct amd_ip_funcs iceland_dpm_ip_funcs = {
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.early_init = iceland_dpm_early_init,
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.late_init = NULL,
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.sw_init = iceland_dpm_sw_init,
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.sw_fini = iceland_dpm_sw_fini,
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.hw_init = iceland_dpm_hw_init,
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.hw_fini = iceland_dpm_hw_fini,
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.suspend = iceland_dpm_suspend,
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.resume = iceland_dpm_resume,
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.is_idle = NULL,
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.wait_for_idle = NULL,
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.soft_reset = NULL,
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.print_status = NULL,
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.set_clockgating_state = iceland_dpm_set_clockgating_state,
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.set_powergating_state = iceland_dpm_set_powergating_state,
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};
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static const struct amdgpu_dpm_funcs iceland_dpm_funcs = {
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.get_temperature = NULL,
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.pre_set_power_state = NULL,
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.set_power_state = NULL,
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.post_set_power_state = NULL,
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.display_configuration_changed = NULL,
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.get_sclk = NULL,
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.get_mclk = NULL,
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.print_power_state = NULL,
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.debugfs_print_current_performance_level = NULL,
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.force_performance_level = NULL,
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.vblank_too_short = NULL,
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.powergate_uvd = NULL,
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};
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static void iceland_dpm_set_funcs(struct amdgpu_device *adev)
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{
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if (NULL == adev->pm.funcs)
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adev->pm.funcs = &iceland_dpm_funcs;
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}
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