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linux/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c
Azeem Shaikh 7f09a3a09f drm/amd/pm: Replace all non-returning strlcpy with strscpy 
strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230522155245.2336818-1-azeemshaikh38@gmail.com
2023-05-26 13:52:19 -07:00

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/*
* Copyright 2021 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "amdgpu.h"
#include "amdgpu_i2c.h"
#include "amdgpu_atombios.h"
#include "atom.h"
#include "amd_pcie.h"
#include "legacy_dpm.h"
#include "amdgpu_dpm_internal.h"
#include "amdgpu_display.h"
#define amdgpu_dpm_pre_set_power_state(adev) \
((adev)->powerplay.pp_funcs->pre_set_power_state((adev)->powerplay.pp_handle))
#define amdgpu_dpm_post_set_power_state(adev) \
((adev)->powerplay.pp_funcs->post_set_power_state((adev)->powerplay.pp_handle))
#define amdgpu_dpm_display_configuration_changed(adev) \
((adev)->powerplay.pp_funcs->display_configuration_changed((adev)->powerplay.pp_handle))
#define amdgpu_dpm_print_power_state(adev, ps) \
((adev)->powerplay.pp_funcs->print_power_state((adev)->powerplay.pp_handle, (ps)))
#define amdgpu_dpm_vblank_too_short(adev) \
((adev)->powerplay.pp_funcs->vblank_too_short((adev)->powerplay.pp_handle))
#define amdgpu_dpm_check_state_equal(adev, cps, rps, equal) \
((adev)->powerplay.pp_funcs->check_state_equal((adev)->powerplay.pp_handle, (cps), (rps), (equal)))
void amdgpu_dpm_print_class_info(u32 class, u32 class2)
{
const char *s;
switch (class & ATOM_PPLIB_CLASSIFICATION_UI_MASK) {
case ATOM_PPLIB_CLASSIFICATION_UI_NONE:
default:
s = "none";
break;
case ATOM_PPLIB_CLASSIFICATION_UI_BATTERY:
s = "battery";
break;
case ATOM_PPLIB_CLASSIFICATION_UI_BALANCED:
s = "balanced";
break;
case ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE:
s = "performance";
break;
}
printk("\tui class: %s\n", s);
printk("\tinternal class:");
if (((class & ~ATOM_PPLIB_CLASSIFICATION_UI_MASK) == 0) &&
(class2 == 0))
pr_cont(" none");
else {
if (class & ATOM_PPLIB_CLASSIFICATION_BOOT)
pr_cont(" boot");
if (class & ATOM_PPLIB_CLASSIFICATION_THERMAL)
pr_cont(" thermal");
if (class & ATOM_PPLIB_CLASSIFICATION_LIMITEDPOWERSOURCE)
pr_cont(" limited_pwr");
if (class & ATOM_PPLIB_CLASSIFICATION_REST)
pr_cont(" rest");
if (class & ATOM_PPLIB_CLASSIFICATION_FORCED)
pr_cont(" forced");
if (class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE)
pr_cont(" 3d_perf");
if (class & ATOM_PPLIB_CLASSIFICATION_OVERDRIVETEMPLATE)
pr_cont(" ovrdrv");
if (class & ATOM_PPLIB_CLASSIFICATION_UVDSTATE)
pr_cont(" uvd");
if (class & ATOM_PPLIB_CLASSIFICATION_3DLOW)
pr_cont(" 3d_low");
if (class & ATOM_PPLIB_CLASSIFICATION_ACPI)
pr_cont(" acpi");
if (class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
pr_cont(" uvd_hd2");
if (class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
pr_cont(" uvd_hd");
if (class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
pr_cont(" uvd_sd");
if (class2 & ATOM_PPLIB_CLASSIFICATION2_LIMITEDPOWERSOURCE_2)
pr_cont(" limited_pwr2");
if (class2 & ATOM_PPLIB_CLASSIFICATION2_ULV)
pr_cont(" ulv");
if (class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
pr_cont(" uvd_mvc");
}
pr_cont("\n");
}
void amdgpu_dpm_print_cap_info(u32 caps)
{
printk("\tcaps:");
if (caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY)
pr_cont(" single_disp");
if (caps & ATOM_PPLIB_SUPPORTS_VIDEO_PLAYBACK)
pr_cont(" video");
if (caps & ATOM_PPLIB_DISALLOW_ON_DC)
pr_cont(" no_dc");
pr_cont("\n");
}
void amdgpu_dpm_print_ps_status(struct amdgpu_device *adev,
struct amdgpu_ps *rps)
{
printk("\tstatus:");
if (rps == adev->pm.dpm.current_ps)
pr_cont(" c");
if (rps == adev->pm.dpm.requested_ps)
pr_cont(" r");
if (rps == adev->pm.dpm.boot_ps)
pr_cont(" b");
pr_cont("\n");
}
void amdgpu_pm_print_power_states(struct amdgpu_device *adev)
{
int i;
if (adev->powerplay.pp_funcs->print_power_state == NULL)
return;
for (i = 0; i < adev->pm.dpm.num_ps; i++)
amdgpu_dpm_print_power_state(adev, &adev->pm.dpm.ps[i]);
}
union power_info {
struct _ATOM_POWERPLAY_INFO info;
struct _ATOM_POWERPLAY_INFO_V2 info_2;
struct _ATOM_POWERPLAY_INFO_V3 info_3;
struct _ATOM_PPLIB_POWERPLAYTABLE pplib;
struct _ATOM_PPLIB_POWERPLAYTABLE2 pplib2;
struct _ATOM_PPLIB_POWERPLAYTABLE3 pplib3;
struct _ATOM_PPLIB_POWERPLAYTABLE4 pplib4;
struct _ATOM_PPLIB_POWERPLAYTABLE5 pplib5;
};
int amdgpu_get_platform_caps(struct amdgpu_device *adev)
{
struct amdgpu_mode_info *mode_info = &adev->mode_info;
union power_info *power_info;
int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
u16 data_offset;
u8 frev, crev;
if (!amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
&frev, &crev, &data_offset))
return -EINVAL;
power_info = (union power_info *)(mode_info->atom_context->bios + data_offset);
adev->pm.dpm.platform_caps = le32_to_cpu(power_info->pplib.ulPlatformCaps);
adev->pm.dpm.backbias_response_time = le16_to_cpu(power_info->pplib.usBackbiasTime);
adev->pm.dpm.voltage_response_time = le16_to_cpu(power_info->pplib.usVoltageTime);
return 0;
}
union fan_info {
struct _ATOM_PPLIB_FANTABLE fan;
struct _ATOM_PPLIB_FANTABLE2 fan2;
struct _ATOM_PPLIB_FANTABLE3 fan3;
};
static int amdgpu_parse_clk_voltage_dep_table(struct amdgpu_clock_voltage_dependency_table *amdgpu_table,
ATOM_PPLIB_Clock_Voltage_Dependency_Table *atom_table)
{
u32 size = atom_table->ucNumEntries *
sizeof(struct amdgpu_clock_voltage_dependency_entry);
int i;
ATOM_PPLIB_Clock_Voltage_Dependency_Record *entry;
amdgpu_table->entries = kzalloc(size, GFP_KERNEL);
if (!amdgpu_table->entries)
return -ENOMEM;
entry = &atom_table->entries[0];
for (i = 0; i < atom_table->ucNumEntries; i++) {
amdgpu_table->entries[i].clk = le16_to_cpu(entry->usClockLow) |
(entry->ucClockHigh << 16);
amdgpu_table->entries[i].v = le16_to_cpu(entry->usVoltage);
entry = (ATOM_PPLIB_Clock_Voltage_Dependency_Record *)
((u8 *)entry + sizeof(ATOM_PPLIB_Clock_Voltage_Dependency_Record));
}
amdgpu_table->count = atom_table->ucNumEntries;
return 0;
}
/* sizeof(ATOM_PPLIB_EXTENDEDHEADER) */
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V2 12
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V3 14
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V4 16
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V5 18
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V6 20
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V7 22
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V8 24
#define SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V9 26
int amdgpu_parse_extended_power_table(struct amdgpu_device *adev)
{
struct amdgpu_mode_info *mode_info = &adev->mode_info;
union power_info *power_info;
union fan_info *fan_info;
ATOM_PPLIB_Clock_Voltage_Dependency_Table *dep_table;
int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
u16 data_offset;
u8 frev, crev;
int ret, i;
if (!amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
&frev, &crev, &data_offset))
return -EINVAL;
power_info = (union power_info *)(mode_info->atom_context->bios + data_offset);
/* fan table */
if (le16_to_cpu(power_info->pplib.usTableSize) >=
sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE3)) {
if (power_info->pplib3.usFanTableOffset) {
fan_info = (union fan_info *)(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib3.usFanTableOffset));
adev->pm.dpm.fan.t_hyst = fan_info->fan.ucTHyst;
adev->pm.dpm.fan.t_min = le16_to_cpu(fan_info->fan.usTMin);
adev->pm.dpm.fan.t_med = le16_to_cpu(fan_info->fan.usTMed);
adev->pm.dpm.fan.t_high = le16_to_cpu(fan_info->fan.usTHigh);
adev->pm.dpm.fan.pwm_min = le16_to_cpu(fan_info->fan.usPWMMin);
adev->pm.dpm.fan.pwm_med = le16_to_cpu(fan_info->fan.usPWMMed);
adev->pm.dpm.fan.pwm_high = le16_to_cpu(fan_info->fan.usPWMHigh);
if (fan_info->fan.ucFanTableFormat >= 2)
adev->pm.dpm.fan.t_max = le16_to_cpu(fan_info->fan2.usTMax);
else
adev->pm.dpm.fan.t_max = 10900;
adev->pm.dpm.fan.cycle_delay = 100000;
if (fan_info->fan.ucFanTableFormat >= 3) {
adev->pm.dpm.fan.control_mode = fan_info->fan3.ucFanControlMode;
adev->pm.dpm.fan.default_max_fan_pwm =
le16_to_cpu(fan_info->fan3.usFanPWMMax);
adev->pm.dpm.fan.default_fan_output_sensitivity = 4836;
adev->pm.dpm.fan.fan_output_sensitivity =
le16_to_cpu(fan_info->fan3.usFanOutputSensitivity);
}
adev->pm.dpm.fan.ucode_fan_control = true;
}
}
/* clock dependancy tables, shedding tables */
if (le16_to_cpu(power_info->pplib.usTableSize) >=
sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE4)) {
if (power_info->pplib4.usVddcDependencyOnSCLKOffset) {
dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib4.usVddcDependencyOnSCLKOffset));
ret = amdgpu_parse_clk_voltage_dep_table(&adev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
dep_table);
if (ret) {
amdgpu_free_extended_power_table(adev);
return ret;
}
}
if (power_info->pplib4.usVddciDependencyOnMCLKOffset) {
dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib4.usVddciDependencyOnMCLKOffset));
ret = amdgpu_parse_clk_voltage_dep_table(&adev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
dep_table);
if (ret) {
amdgpu_free_extended_power_table(adev);
return ret;
}
}
if (power_info->pplib4.usVddcDependencyOnMCLKOffset) {
dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib4.usVddcDependencyOnMCLKOffset));
ret = amdgpu_parse_clk_voltage_dep_table(&adev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
dep_table);
if (ret) {
amdgpu_free_extended_power_table(adev);
return ret;
}
}
if (power_info->pplib4.usMvddDependencyOnMCLKOffset) {
dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib4.usMvddDependencyOnMCLKOffset));
ret = amdgpu_parse_clk_voltage_dep_table(&adev->pm.dpm.dyn_state.mvdd_dependency_on_mclk,
dep_table);
if (ret) {
amdgpu_free_extended_power_table(adev);
return ret;
}
}
if (power_info->pplib4.usMaxClockVoltageOnDCOffset) {
ATOM_PPLIB_Clock_Voltage_Limit_Table *clk_v =
(ATOM_PPLIB_Clock_Voltage_Limit_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib4.usMaxClockVoltageOnDCOffset));
if (clk_v->ucNumEntries) {
adev->pm.dpm.dyn_state.max_clock_voltage_on_dc.sclk =
le16_to_cpu(clk_v->entries[0].usSclkLow) |
(clk_v->entries[0].ucSclkHigh << 16);
adev->pm.dpm.dyn_state.max_clock_voltage_on_dc.mclk =
le16_to_cpu(clk_v->entries[0].usMclkLow) |
(clk_v->entries[0].ucMclkHigh << 16);
adev->pm.dpm.dyn_state.max_clock_voltage_on_dc.vddc =
le16_to_cpu(clk_v->entries[0].usVddc);
adev->pm.dpm.dyn_state.max_clock_voltage_on_dc.vddci =
le16_to_cpu(clk_v->entries[0].usVddci);
}
}
if (power_info->pplib4.usVddcPhaseShedLimitsTableOffset) {
ATOM_PPLIB_PhaseSheddingLimits_Table *psl =
(ATOM_PPLIB_PhaseSheddingLimits_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib4.usVddcPhaseShedLimitsTableOffset));
ATOM_PPLIB_PhaseSheddingLimits_Record *entry;
adev->pm.dpm.dyn_state.phase_shedding_limits_table.entries =
kcalloc(psl->ucNumEntries,
sizeof(struct amdgpu_phase_shedding_limits_entry),
GFP_KERNEL);
if (!adev->pm.dpm.dyn_state.phase_shedding_limits_table.entries) {
amdgpu_free_extended_power_table(adev);
return -ENOMEM;
}
entry = &psl->entries[0];
for (i = 0; i < psl->ucNumEntries; i++) {
adev->pm.dpm.dyn_state.phase_shedding_limits_table.entries[i].sclk =
le16_to_cpu(entry->usSclkLow) | (entry->ucSclkHigh << 16);
adev->pm.dpm.dyn_state.phase_shedding_limits_table.entries[i].mclk =
le16_to_cpu(entry->usMclkLow) | (entry->ucMclkHigh << 16);
adev->pm.dpm.dyn_state.phase_shedding_limits_table.entries[i].voltage =
le16_to_cpu(entry->usVoltage);
entry = (ATOM_PPLIB_PhaseSheddingLimits_Record *)
((u8 *)entry + sizeof(ATOM_PPLIB_PhaseSheddingLimits_Record));
}
adev->pm.dpm.dyn_state.phase_shedding_limits_table.count =
psl->ucNumEntries;
}
}
/* cac data */
if (le16_to_cpu(power_info->pplib.usTableSize) >=
sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE5)) {
adev->pm.dpm.tdp_limit = le32_to_cpu(power_info->pplib5.ulTDPLimit);
adev->pm.dpm.near_tdp_limit = le32_to_cpu(power_info->pplib5.ulNearTDPLimit);
adev->pm.dpm.near_tdp_limit_adjusted = adev->pm.dpm.near_tdp_limit;
adev->pm.dpm.tdp_od_limit = le16_to_cpu(power_info->pplib5.usTDPODLimit);
if (adev->pm.dpm.tdp_od_limit)
adev->pm.dpm.power_control = true;
else
adev->pm.dpm.power_control = false;
adev->pm.dpm.tdp_adjustment = 0;
adev->pm.dpm.sq_ramping_threshold = le32_to_cpu(power_info->pplib5.ulSQRampingThreshold);
adev->pm.dpm.cac_leakage = le32_to_cpu(power_info->pplib5.ulCACLeakage);
adev->pm.dpm.load_line_slope = le16_to_cpu(power_info->pplib5.usLoadLineSlope);
if (power_info->pplib5.usCACLeakageTableOffset) {
ATOM_PPLIB_CAC_Leakage_Table *cac_table =
(ATOM_PPLIB_CAC_Leakage_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib5.usCACLeakageTableOffset));
ATOM_PPLIB_CAC_Leakage_Record *entry;
u32 size = cac_table->ucNumEntries * sizeof(struct amdgpu_cac_leakage_table);
adev->pm.dpm.dyn_state.cac_leakage_table.entries = kzalloc(size, GFP_KERNEL);
if (!adev->pm.dpm.dyn_state.cac_leakage_table.entries) {
amdgpu_free_extended_power_table(adev);
return -ENOMEM;
}
entry = &cac_table->entries[0];
for (i = 0; i < cac_table->ucNumEntries; i++) {
if (adev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_EVV) {
adev->pm.dpm.dyn_state.cac_leakage_table.entries[i].vddc1 =
le16_to_cpu(entry->usVddc1);
adev->pm.dpm.dyn_state.cac_leakage_table.entries[i].vddc2 =
le16_to_cpu(entry->usVddc2);
adev->pm.dpm.dyn_state.cac_leakage_table.entries[i].vddc3 =
le16_to_cpu(entry->usVddc3);
} else {
adev->pm.dpm.dyn_state.cac_leakage_table.entries[i].vddc =
le16_to_cpu(entry->usVddc);
adev->pm.dpm.dyn_state.cac_leakage_table.entries[i].leakage =
le32_to_cpu(entry->ulLeakageValue);
}
entry = (ATOM_PPLIB_CAC_Leakage_Record *)
((u8 *)entry + sizeof(ATOM_PPLIB_CAC_Leakage_Record));
}
adev->pm.dpm.dyn_state.cac_leakage_table.count = cac_table->ucNumEntries;
}
}
/* ext tables */
if (le16_to_cpu(power_info->pplib.usTableSize) >=
sizeof(struct _ATOM_PPLIB_POWERPLAYTABLE3)) {
ATOM_PPLIB_EXTENDEDHEADER *ext_hdr = (ATOM_PPLIB_EXTENDEDHEADER *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(power_info->pplib3.usExtendendedHeaderOffset));
if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V2) &&
ext_hdr->usVCETableOffset) {
VCEClockInfoArray *array = (VCEClockInfoArray *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usVCETableOffset) + 1);
ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table *limits =
(ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usVCETableOffset) + 1 +
1 + array->ucNumEntries * sizeof(VCEClockInfo));
ATOM_PPLIB_VCE_State_Table *states =
(ATOM_PPLIB_VCE_State_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usVCETableOffset) + 1 +
1 + (array->ucNumEntries * sizeof (VCEClockInfo)) +
1 + (limits->numEntries * sizeof(ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record)));
ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record *entry;
ATOM_PPLIB_VCE_State_Record *state_entry;
VCEClockInfo *vce_clk;
u32 size = limits->numEntries *
sizeof(struct amdgpu_vce_clock_voltage_dependency_entry);
adev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries =
kzalloc(size, GFP_KERNEL);
if (!adev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries) {
amdgpu_free_extended_power_table(adev);
return -ENOMEM;
}
adev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.count =
limits->numEntries;
entry = &limits->entries[0];
state_entry = &states->entries[0];
for (i = 0; i < limits->numEntries; i++) {
vce_clk = (VCEClockInfo *)
((u8 *)&array->entries[0] +
(entry->ucVCEClockInfoIndex * sizeof(VCEClockInfo)));
adev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].evclk =
le16_to_cpu(vce_clk->usEVClkLow) | (vce_clk->ucEVClkHigh << 16);
adev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].ecclk =
le16_to_cpu(vce_clk->usECClkLow) | (vce_clk->ucECClkHigh << 16);
adev->pm.dpm.dyn_state.vce_clock_voltage_dependency_table.entries[i].v =
le16_to_cpu(entry->usVoltage);
entry = (ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record *)
((u8 *)entry + sizeof(ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record));
}
adev->pm.dpm.num_of_vce_states =
states->numEntries > AMD_MAX_VCE_LEVELS ?
AMD_MAX_VCE_LEVELS : states->numEntries;
for (i = 0; i < adev->pm.dpm.num_of_vce_states; i++) {
vce_clk = (VCEClockInfo *)
((u8 *)&array->entries[0] +
(state_entry->ucVCEClockInfoIndex * sizeof(VCEClockInfo)));
adev->pm.dpm.vce_states[i].evclk =
le16_to_cpu(vce_clk->usEVClkLow) | (vce_clk->ucEVClkHigh << 16);
adev->pm.dpm.vce_states[i].ecclk =
le16_to_cpu(vce_clk->usECClkLow) | (vce_clk->ucECClkHigh << 16);
adev->pm.dpm.vce_states[i].clk_idx =
state_entry->ucClockInfoIndex & 0x3f;
adev->pm.dpm.vce_states[i].pstate =
(state_entry->ucClockInfoIndex & 0xc0) >> 6;
state_entry = (ATOM_PPLIB_VCE_State_Record *)
((u8 *)state_entry + sizeof(ATOM_PPLIB_VCE_State_Record));
}
}
if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V3) &&
ext_hdr->usUVDTableOffset) {
UVDClockInfoArray *array = (UVDClockInfoArray *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usUVDTableOffset) + 1);
ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table *limits =
(ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usUVDTableOffset) + 1 +
1 + (array->ucNumEntries * sizeof (UVDClockInfo)));
ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record *entry;
u32 size = limits->numEntries *
sizeof(struct amdgpu_uvd_clock_voltage_dependency_entry);
adev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries =
kzalloc(size, GFP_KERNEL);
if (!adev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries) {
amdgpu_free_extended_power_table(adev);
return -ENOMEM;
}
adev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.count =
limits->numEntries;
entry = &limits->entries[0];
for (i = 0; i < limits->numEntries; i++) {
UVDClockInfo *uvd_clk = (UVDClockInfo *)
((u8 *)&array->entries[0] +
(entry->ucUVDClockInfoIndex * sizeof(UVDClockInfo)));
adev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries[i].vclk =
le16_to_cpu(uvd_clk->usVClkLow) | (uvd_clk->ucVClkHigh << 16);
adev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries[i].dclk =
le16_to_cpu(uvd_clk->usDClkLow) | (uvd_clk->ucDClkHigh << 16);
adev->pm.dpm.dyn_state.uvd_clock_voltage_dependency_table.entries[i].v =
le16_to_cpu(entry->usVoltage);
entry = (ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record *)
((u8 *)entry + sizeof(ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record));
}
}
if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V4) &&
ext_hdr->usSAMUTableOffset) {
ATOM_PPLIB_SAMClk_Voltage_Limit_Table *limits =
(ATOM_PPLIB_SAMClk_Voltage_Limit_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usSAMUTableOffset) + 1);
ATOM_PPLIB_SAMClk_Voltage_Limit_Record *entry;
u32 size = limits->numEntries *
sizeof(struct amdgpu_clock_voltage_dependency_entry);
adev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries =
kzalloc(size, GFP_KERNEL);
if (!adev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries) {
amdgpu_free_extended_power_table(adev);
return -ENOMEM;
}
adev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.count =
limits->numEntries;
entry = &limits->entries[0];
for (i = 0; i < limits->numEntries; i++) {
adev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries[i].clk =
le16_to_cpu(entry->usSAMClockLow) | (entry->ucSAMClockHigh << 16);
adev->pm.dpm.dyn_state.samu_clock_voltage_dependency_table.entries[i].v =
le16_to_cpu(entry->usVoltage);
entry = (ATOM_PPLIB_SAMClk_Voltage_Limit_Record *)
((u8 *)entry + sizeof(ATOM_PPLIB_SAMClk_Voltage_Limit_Record));
}
}
if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V5) &&
ext_hdr->usPPMTableOffset) {
ATOM_PPLIB_PPM_Table *ppm = (ATOM_PPLIB_PPM_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usPPMTableOffset));
adev->pm.dpm.dyn_state.ppm_table =
kzalloc(sizeof(struct amdgpu_ppm_table), GFP_KERNEL);
if (!adev->pm.dpm.dyn_state.ppm_table) {
amdgpu_free_extended_power_table(adev);
return -ENOMEM;
}
adev->pm.dpm.dyn_state.ppm_table->ppm_design = ppm->ucPpmDesign;
adev->pm.dpm.dyn_state.ppm_table->cpu_core_number =
le16_to_cpu(ppm->usCpuCoreNumber);
adev->pm.dpm.dyn_state.ppm_table->platform_tdp =
le32_to_cpu(ppm->ulPlatformTDP);
adev->pm.dpm.dyn_state.ppm_table->small_ac_platform_tdp =
le32_to_cpu(ppm->ulSmallACPlatformTDP);
adev->pm.dpm.dyn_state.ppm_table->platform_tdc =
le32_to_cpu(ppm->ulPlatformTDC);
adev->pm.dpm.dyn_state.ppm_table->small_ac_platform_tdc =
le32_to_cpu(ppm->ulSmallACPlatformTDC);
adev->pm.dpm.dyn_state.ppm_table->apu_tdp =
le32_to_cpu(ppm->ulApuTDP);
adev->pm.dpm.dyn_state.ppm_table->dgpu_tdp =
le32_to_cpu(ppm->ulDGpuTDP);
adev->pm.dpm.dyn_state.ppm_table->dgpu_ulv_power =
le32_to_cpu(ppm->ulDGpuUlvPower);
adev->pm.dpm.dyn_state.ppm_table->tj_max =
le32_to_cpu(ppm->ulTjmax);
}
if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V6) &&
ext_hdr->usACPTableOffset) {
ATOM_PPLIB_ACPClk_Voltage_Limit_Table *limits =
(ATOM_PPLIB_ACPClk_Voltage_Limit_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usACPTableOffset) + 1);
ATOM_PPLIB_ACPClk_Voltage_Limit_Record *entry;
u32 size = limits->numEntries *
sizeof(struct amdgpu_clock_voltage_dependency_entry);
adev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries =
kzalloc(size, GFP_KERNEL);
if (!adev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries) {
amdgpu_free_extended_power_table(adev);
return -ENOMEM;
}
adev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.count =
limits->numEntries;
entry = &limits->entries[0];
for (i = 0; i < limits->numEntries; i++) {
adev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries[i].clk =
le16_to_cpu(entry->usACPClockLow) | (entry->ucACPClockHigh << 16);
adev->pm.dpm.dyn_state.acp_clock_voltage_dependency_table.entries[i].v =
le16_to_cpu(entry->usVoltage);
entry = (ATOM_PPLIB_ACPClk_Voltage_Limit_Record *)
((u8 *)entry + sizeof(ATOM_PPLIB_ACPClk_Voltage_Limit_Record));
}
}
if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V7) &&
ext_hdr->usPowerTuneTableOffset) {
u8 rev = *(u8 *)(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usPowerTuneTableOffset));
ATOM_PowerTune_Table *pt;
adev->pm.dpm.dyn_state.cac_tdp_table =
kzalloc(sizeof(struct amdgpu_cac_tdp_table), GFP_KERNEL);
if (!adev->pm.dpm.dyn_state.cac_tdp_table) {
amdgpu_free_extended_power_table(adev);
return -ENOMEM;
}
if (rev > 0) {
ATOM_PPLIB_POWERTUNE_Table_V1 *ppt = (ATOM_PPLIB_POWERTUNE_Table_V1 *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usPowerTuneTableOffset));
adev->pm.dpm.dyn_state.cac_tdp_table->maximum_power_delivery_limit =
ppt->usMaximumPowerDeliveryLimit;
pt = &ppt->power_tune_table;
} else {
ATOM_PPLIB_POWERTUNE_Table *ppt = (ATOM_PPLIB_POWERTUNE_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usPowerTuneTableOffset));
adev->pm.dpm.dyn_state.cac_tdp_table->maximum_power_delivery_limit = 255;
pt = &ppt->power_tune_table;
}
adev->pm.dpm.dyn_state.cac_tdp_table->tdp = le16_to_cpu(pt->usTDP);
adev->pm.dpm.dyn_state.cac_tdp_table->configurable_tdp =
le16_to_cpu(pt->usConfigurableTDP);
adev->pm.dpm.dyn_state.cac_tdp_table->tdc = le16_to_cpu(pt->usTDC);
adev->pm.dpm.dyn_state.cac_tdp_table->battery_power_limit =
le16_to_cpu(pt->usBatteryPowerLimit);
adev->pm.dpm.dyn_state.cac_tdp_table->small_power_limit =
le16_to_cpu(pt->usSmallPowerLimit);
adev->pm.dpm.dyn_state.cac_tdp_table->low_cac_leakage =
le16_to_cpu(pt->usLowCACLeakage);
adev->pm.dpm.dyn_state.cac_tdp_table->high_cac_leakage =
le16_to_cpu(pt->usHighCACLeakage);
}
if ((le16_to_cpu(ext_hdr->usSize) >= SIZE_OF_ATOM_PPLIB_EXTENDEDHEADER_V8) &&
ext_hdr->usSclkVddgfxTableOffset) {
dep_table = (ATOM_PPLIB_Clock_Voltage_Dependency_Table *)
(mode_info->atom_context->bios + data_offset +
le16_to_cpu(ext_hdr->usSclkVddgfxTableOffset));
ret = amdgpu_parse_clk_voltage_dep_table(
&adev->pm.dpm.dyn_state.vddgfx_dependency_on_sclk,
dep_table);
if (ret) {
kfree(adev->pm.dpm.dyn_state.vddgfx_dependency_on_sclk.entries);
return ret;
}
}
}
return 0;
}
void amdgpu_free_extended_power_table(struct amdgpu_device *adev)
{
struct amdgpu_dpm_dynamic_state *dyn_state = &adev->pm.dpm.dyn_state;
kfree(dyn_state->vddc_dependency_on_sclk.entries);
kfree(dyn_state->vddci_dependency_on_mclk.entries);
kfree(dyn_state->vddc_dependency_on_mclk.entries);
kfree(dyn_state->mvdd_dependency_on_mclk.entries);
kfree(dyn_state->cac_leakage_table.entries);
kfree(dyn_state->phase_shedding_limits_table.entries);
kfree(dyn_state->ppm_table);
kfree(dyn_state->cac_tdp_table);
kfree(dyn_state->vce_clock_voltage_dependency_table.entries);
kfree(dyn_state->uvd_clock_voltage_dependency_table.entries);
kfree(dyn_state->samu_clock_voltage_dependency_table.entries);
kfree(dyn_state->acp_clock_voltage_dependency_table.entries);
kfree(dyn_state->vddgfx_dependency_on_sclk.entries);
}
static const char *pp_lib_thermal_controller_names[] = {
"NONE",
"lm63",
"adm1032",
"adm1030",
"max6649",
"lm64",
"f75375",
"RV6xx",
"RV770",
"adt7473",
"NONE",
"External GPIO",
"Evergreen",
"emc2103",
"Sumo",
"Northern Islands",
"Southern Islands",
"lm96163",
"Sea Islands",
"Kaveri/Kabini",
};
void amdgpu_add_thermal_controller(struct amdgpu_device *adev)
{
struct amdgpu_mode_info *mode_info = &adev->mode_info;
ATOM_PPLIB_POWERPLAYTABLE *power_table;
int index = GetIndexIntoMasterTable(DATA, PowerPlayInfo);
ATOM_PPLIB_THERMALCONTROLLER *controller;
struct amdgpu_i2c_bus_rec i2c_bus;
u16 data_offset;
u8 frev, crev;
if (!amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
&frev, &crev, &data_offset))
return;
power_table = (ATOM_PPLIB_POWERPLAYTABLE *)
(mode_info->atom_context->bios + data_offset);
controller = &power_table->sThermalController;
/* add the i2c bus for thermal/fan chip */
if (controller->ucType > 0) {
if (controller->ucFanParameters & ATOM_PP_FANPARAMETERS_NOFAN)
adev->pm.no_fan = true;
adev->pm.fan_pulses_per_revolution =
controller->ucFanParameters & ATOM_PP_FANPARAMETERS_TACHOMETER_PULSES_PER_REVOLUTION_MASK;
if (adev->pm.fan_pulses_per_revolution) {
adev->pm.fan_min_rpm = controller->ucFanMinRPM;
adev->pm.fan_max_rpm = controller->ucFanMaxRPM;
}
if (controller->ucType == ATOM_PP_THERMALCONTROLLER_RV6xx) {
DRM_INFO("Internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_RV6XX;
} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_RV770) {
DRM_INFO("Internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_RV770;
} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_EVERGREEN) {
DRM_INFO("Internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_EVERGREEN;
} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_SUMO) {
DRM_INFO("Internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_SUMO;
} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_NISLANDS) {
DRM_INFO("Internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_NI;
} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_SISLANDS) {
DRM_INFO("Internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_SI;
} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_CISLANDS) {
DRM_INFO("Internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_CI;
} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_KAVERI) {
DRM_INFO("Internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_KV;
} else if (controller->ucType == ATOM_PP_THERMALCONTROLLER_EXTERNAL_GPIO) {
DRM_INFO("External GPIO thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_EXTERNAL_GPIO;
} else if (controller->ucType ==
ATOM_PP_THERMALCONTROLLER_ADT7473_WITH_INTERNAL) {
DRM_INFO("ADT7473 with internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_ADT7473_WITH_INTERNAL;
} else if (controller->ucType ==
ATOM_PP_THERMALCONTROLLER_EMC2103_WITH_INTERNAL) {
DRM_INFO("EMC2103 with internal thermal controller %s fan control\n",
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_EMC2103_WITH_INTERNAL;
} else if (controller->ucType < ARRAY_SIZE(pp_lib_thermal_controller_names)) {
DRM_INFO("Possible %s thermal controller at 0x%02x %s fan control\n",
pp_lib_thermal_controller_names[controller->ucType],
controller->ucI2cAddress >> 1,
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
adev->pm.int_thermal_type = THERMAL_TYPE_EXTERNAL;
i2c_bus = amdgpu_atombios_lookup_i2c_gpio(adev, controller->ucI2cLine);
adev->pm.i2c_bus = amdgpu_i2c_lookup(adev, &i2c_bus);
if (adev->pm.i2c_bus) {
struct i2c_board_info info = { };
const char *name = pp_lib_thermal_controller_names[controller->ucType];
info.addr = controller->ucI2cAddress >> 1;
strscpy(info.type, name, sizeof(info.type));
i2c_new_client_device(&adev->pm.i2c_bus->adapter, &info);
}
} else {
DRM_INFO("Unknown thermal controller type %d at 0x%02x %s fan control\n",
controller->ucType,
controller->ucI2cAddress >> 1,
(controller->ucFanParameters &
ATOM_PP_FANPARAMETERS_NOFAN) ? "without" : "with");
}
}
}
struct amd_vce_state* amdgpu_get_vce_clock_state(void *handle, u32 idx)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
if (idx < adev->pm.dpm.num_of_vce_states)
return &adev->pm.dpm.vce_states[idx];
return NULL;
}
static struct amdgpu_ps *amdgpu_dpm_pick_power_state(struct amdgpu_device *adev,
enum amd_pm_state_type dpm_state)
{
int i;
struct amdgpu_ps *ps;
u32 ui_class;
bool single_display = (adev->pm.dpm.new_active_crtc_count < 2) ?
true : false;
/* check if the vblank period is too short to adjust the mclk */
if (single_display && adev->powerplay.pp_funcs->vblank_too_short) {
if (amdgpu_dpm_vblank_too_short(adev))
single_display = false;
}
/* certain older asics have a separare 3D performance state,
* so try that first if the user selected performance
*/
if (dpm_state == POWER_STATE_TYPE_PERFORMANCE)
dpm_state = POWER_STATE_TYPE_INTERNAL_3DPERF;
/* balanced states don't exist at the moment */
if (dpm_state == POWER_STATE_TYPE_BALANCED)
dpm_state = POWER_STATE_TYPE_PERFORMANCE;
restart_search:
/* Pick the best power state based on current conditions */
for (i = 0; i < adev->pm.dpm.num_ps; i++) {
ps = &adev->pm.dpm.ps[i];
ui_class = ps->class & ATOM_PPLIB_CLASSIFICATION_UI_MASK;
switch (dpm_state) {
/* user states */
case POWER_STATE_TYPE_BATTERY:
if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BATTERY) {
if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
if (single_display)
return ps;
} else
return ps;
}
break;
case POWER_STATE_TYPE_BALANCED:
if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_BALANCED) {
if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
if (single_display)
return ps;
} else
return ps;
}
break;
case POWER_STATE_TYPE_PERFORMANCE:
if (ui_class == ATOM_PPLIB_CLASSIFICATION_UI_PERFORMANCE) {
if (ps->caps & ATOM_PPLIB_SINGLE_DISPLAY_ONLY) {
if (single_display)
return ps;
} else
return ps;
}
break;
/* internal states */
case POWER_STATE_TYPE_INTERNAL_UVD:
if (adev->pm.dpm.uvd_ps)
return adev->pm.dpm.uvd_ps;
else
break;
case POWER_STATE_TYPE_INTERNAL_UVD_SD:
if (ps->class & ATOM_PPLIB_CLASSIFICATION_SDSTATE)
return ps;
break;
case POWER_STATE_TYPE_INTERNAL_UVD_HD:
if (ps->class & ATOM_PPLIB_CLASSIFICATION_HDSTATE)
return ps;
break;
case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
if (ps->class & ATOM_PPLIB_CLASSIFICATION_HD2STATE)
return ps;
break;
case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_MVC)
return ps;
break;
case POWER_STATE_TYPE_INTERNAL_BOOT:
return adev->pm.dpm.boot_ps;
case POWER_STATE_TYPE_INTERNAL_THERMAL:
if (ps->class & ATOM_PPLIB_CLASSIFICATION_THERMAL)
return ps;
break;
case POWER_STATE_TYPE_INTERNAL_ACPI:
if (ps->class & ATOM_PPLIB_CLASSIFICATION_ACPI)
return ps;
break;
case POWER_STATE_TYPE_INTERNAL_ULV:
if (ps->class2 & ATOM_PPLIB_CLASSIFICATION2_ULV)
return ps;
break;
case POWER_STATE_TYPE_INTERNAL_3DPERF:
if (ps->class & ATOM_PPLIB_CLASSIFICATION_3DPERFORMANCE)
return ps;
break;
default:
break;
}
}
/* use a fallback state if we didn't match */
switch (dpm_state) {
case POWER_STATE_TYPE_INTERNAL_UVD_SD:
dpm_state = POWER_STATE_TYPE_INTERNAL_UVD_HD;
goto restart_search;
case POWER_STATE_TYPE_INTERNAL_UVD_HD:
case POWER_STATE_TYPE_INTERNAL_UVD_HD2:
case POWER_STATE_TYPE_INTERNAL_UVD_MVC:
if (adev->pm.dpm.uvd_ps) {
return adev->pm.dpm.uvd_ps;
} else {
dpm_state = POWER_STATE_TYPE_PERFORMANCE;
goto restart_search;
}
case POWER_STATE_TYPE_INTERNAL_THERMAL:
dpm_state = POWER_STATE_TYPE_INTERNAL_ACPI;
goto restart_search;
case POWER_STATE_TYPE_INTERNAL_ACPI:
dpm_state = POWER_STATE_TYPE_BATTERY;
goto restart_search;
case POWER_STATE_TYPE_BATTERY:
case POWER_STATE_TYPE_BALANCED:
case POWER_STATE_TYPE_INTERNAL_3DPERF:
dpm_state = POWER_STATE_TYPE_PERFORMANCE;
goto restart_search;
default:
break;
}
return NULL;
}
static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev)
{
const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
struct amdgpu_ps *ps;
enum amd_pm_state_type dpm_state;
int ret;
bool equal = false;
/* if dpm init failed */
if (!adev->pm.dpm_enabled)
return 0;
if (adev->pm.dpm.user_state != adev->pm.dpm.state) {
/* add other state override checks here */
if ((!adev->pm.dpm.thermal_active) &&
(!adev->pm.dpm.uvd_active))
adev->pm.dpm.state = adev->pm.dpm.user_state;
}
dpm_state = adev->pm.dpm.state;
ps = amdgpu_dpm_pick_power_state(adev, dpm_state);
if (ps)
adev->pm.dpm.requested_ps = ps;
else
return -EINVAL;
if (amdgpu_dpm == 1 && pp_funcs->print_power_state) {
printk("switching from power state:\n");
amdgpu_dpm_print_power_state(adev, adev->pm.dpm.current_ps);
printk("switching to power state:\n");
amdgpu_dpm_print_power_state(adev, adev->pm.dpm.requested_ps);
}
/* update whether vce is active */
ps->vce_active = adev->pm.dpm.vce_active;
if (pp_funcs->display_configuration_changed)
amdgpu_dpm_display_configuration_changed(adev);
ret = amdgpu_dpm_pre_set_power_state(adev);
if (ret)
return ret;
if (pp_funcs->check_state_equal) {
if (0 != amdgpu_dpm_check_state_equal(adev, adev->pm.dpm.current_ps, adev->pm.dpm.requested_ps, &equal))
equal = false;
}
if (equal)
return 0;
if (pp_funcs->set_power_state)
pp_funcs->set_power_state(adev->powerplay.pp_handle);
amdgpu_dpm_post_set_power_state(adev);
adev->pm.dpm.current_active_crtcs = adev->pm.dpm.new_active_crtcs;
adev->pm.dpm.current_active_crtc_count = adev->pm.dpm.new_active_crtc_count;
if (pp_funcs->force_performance_level) {
if (adev->pm.dpm.thermal_active) {
enum amd_dpm_forced_level level = adev->pm.dpm.forced_level;
/* force low perf level for thermal */
pp_funcs->force_performance_level(adev, AMD_DPM_FORCED_LEVEL_LOW);
/* save the user's level */
adev->pm.dpm.forced_level = level;
} else {
/* otherwise, user selected level */
pp_funcs->force_performance_level(adev, adev->pm.dpm.forced_level);
}
}
return 0;
}
void amdgpu_legacy_dpm_compute_clocks(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
amdgpu_dpm_get_active_displays(adev);
amdgpu_dpm_change_power_state_locked(adev);
}
void amdgpu_dpm_thermal_work_handler(struct work_struct *work)
{
struct amdgpu_device *adev =
container_of(work, struct amdgpu_device,
pm.dpm.thermal.work);
const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
/* switch to the thermal state */
enum amd_pm_state_type dpm_state = POWER_STATE_TYPE_INTERNAL_THERMAL;
int temp, size = sizeof(temp);
if (!adev->pm.dpm_enabled)
return;
if (!pp_funcs->read_sensor(adev->powerplay.pp_handle,
AMDGPU_PP_SENSOR_GPU_TEMP,
(void *)&temp,
&size)) {
if (temp < adev->pm.dpm.thermal.min_temp)
/* switch back the user state */
dpm_state = adev->pm.dpm.user_state;
} else {
if (adev->pm.dpm.thermal.high_to_low)
/* switch back the user state */
dpm_state = adev->pm.dpm.user_state;
}
if (dpm_state == POWER_STATE_TYPE_INTERNAL_THERMAL)
adev->pm.dpm.thermal_active = true;
else
adev->pm.dpm.thermal_active = false;
adev->pm.dpm.state = dpm_state;
amdgpu_legacy_dpm_compute_clocks(adev->powerplay.pp_handle);
}
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