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/*
* Copyright 2015 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 "linux/delay.h"
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include "cgs_common.h"
#include "power_state.h"
#include "hwmgr.h"
#include "cz_hwmgr.h"
#include "tonga_hwmgr.h"
extern int fiji_hwmgr_init(struct pp_hwmgr *hwmgr);
int hwmgr_init(struct amd_pp_init *pp_init, struct pp_instance *handle)
{
struct pp_hwmgr *hwmgr;
if ((handle == NULL) || (pp_init == NULL))
return -EINVAL;
hwmgr = kzalloc(sizeof(struct pp_hwmgr), GFP_KERNEL);
if (hwmgr == NULL)
return -ENOMEM;
handle->hwmgr = hwmgr;
hwmgr->smumgr = handle->smu_mgr;
hwmgr->device = pp_init->device;
hwmgr->chip_family = pp_init->chip_family;
hwmgr->chip_id = pp_init->chip_id;
hwmgr->hw_revision = pp_init->rev_id;
hwmgr->usec_timeout = AMD_MAX_USEC_TIMEOUT;
hwmgr->power_source = PP_PowerSource_AC;
switch (hwmgr->chip_family) {
case AMD_FAMILY_CZ:
cz_hwmgr_init(hwmgr);
break;
case AMD_FAMILY_VI:
switch (hwmgr->chip_id) {
case CHIP_TONGA:
tonga_hwmgr_init(hwmgr);
break;
case CHIP_FIJI:
fiji_hwmgr_init(hwmgr);
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
phm_init_dynamic_caps(hwmgr);
return 0;
}
int hwmgr_fini(struct pp_hwmgr *hwmgr)
{
if (hwmgr == NULL || hwmgr->ps == NULL)
return -EINVAL;
kfree(hwmgr->ps);
kfree(hwmgr);
return 0;
}
int hw_init_power_state_table(struct pp_hwmgr *hwmgr)
{
int result;
unsigned int i;
unsigned int table_entries;
struct pp_power_state *state;
int size;
if (hwmgr->hwmgr_func->get_num_of_pp_table_entries == NULL)
return -EINVAL;
if (hwmgr->hwmgr_func->get_power_state_size == NULL)
return -EINVAL;
hwmgr->num_ps = table_entries = hwmgr->hwmgr_func->get_num_of_pp_table_entries(hwmgr);
hwmgr->ps_size = size = hwmgr->hwmgr_func->get_power_state_size(hwmgr) +
sizeof(struct pp_power_state);
hwmgr->ps = kzalloc(size * table_entries, GFP_KERNEL);
state = hwmgr->ps;
for (i = 0; i < table_entries; i++) {
result = hwmgr->hwmgr_func->get_pp_table_entry(hwmgr, i, state);
if (state->classification.flags & PP_StateClassificationFlag_Boot) {
hwmgr->boot_ps = state;
hwmgr->current_ps = hwmgr->request_ps = state;
}
state->id = i + 1; /* assigned unique num for every power state id */
if (state->classification.flags & PP_StateClassificationFlag_Uvd)
hwmgr->uvd_ps = state;
state = (struct pp_power_state *)((unsigned long)state + size);
}
return 0;
}
/**
* Returns once the part of the register indicated by the mask has
* reached the given value.
*/
int phm_wait_on_register(struct pp_hwmgr *hwmgr, uint32_t index,
uint32_t value, uint32_t mask)
{
uint32_t i;
uint32_t cur_value;
if (hwmgr == NULL || hwmgr->device == NULL) {
printk(KERN_ERR "[ powerplay ] Invalid Hardware Manager!");
return -EINVAL;
}
for (i = 0; i < hwmgr->usec_timeout; i++) {
cur_value = cgs_read_register(hwmgr->device, index);
if ((cur_value & mask) == (value & mask))
break;
udelay(1);
}
/* timeout means wrong logic*/
if (i == hwmgr->usec_timeout)
return -1;
return 0;
}
int phm_wait_for_register_unequal(struct pp_hwmgr *hwmgr,
uint32_t index, uint32_t value, uint32_t mask)
{
uint32_t i;
uint32_t cur_value;
if (hwmgr == NULL || hwmgr->device == NULL) {
printk(KERN_ERR "[ powerplay ] Invalid Hardware Manager!");
return -EINVAL;
}
for (i = 0; i < hwmgr->usec_timeout; i++) {
cur_value = cgs_read_register(hwmgr->device, index);
if ((cur_value & mask) != (value & mask))
break;
udelay(1);
}
/* timeout means wrong logic*/
if (i == hwmgr->usec_timeout)
return -1;
return 0;
}
/**
* Returns once the part of the register indicated by the mask has
* reached the given value.The indirect space is described by giving
* the memory-mapped index of the indirect index register.
*/
void phm_wait_on_indirect_register(struct pp_hwmgr *hwmgr,
uint32_t indirect_port,
uint32_t index,
uint32_t value,
uint32_t mask)
{
if (hwmgr == NULL || hwmgr->device == NULL) {
printk(KERN_ERR "[ powerplay ] Invalid Hardware Manager!");
return;
}
cgs_write_register(hwmgr->device, indirect_port, index);
phm_wait_on_register(hwmgr, indirect_port + 1, mask, value);
}
void phm_wait_for_indirect_register_unequal(struct pp_hwmgr *hwmgr,
uint32_t indirect_port,
uint32_t index,
uint32_t value,
uint32_t mask)
{
if (hwmgr == NULL || hwmgr->device == NULL) {
printk(KERN_ERR "[ powerplay ] Invalid Hardware Manager!");
return;
}
cgs_write_register(hwmgr->device, indirect_port, index);
phm_wait_for_register_unequal(hwmgr, indirect_port + 1,
value, mask);
}
bool phm_cf_want_uvd_power_gating(struct pp_hwmgr *hwmgr)
{
return phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_UVDPowerGating);
}
bool phm_cf_want_vce_power_gating(struct pp_hwmgr *hwmgr)
{
return phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_VCEPowerGating);
}
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