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drm/amdgpu: init sdma power gating for raven 

Initialize sdma for powergating.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2017-02-28 16:07:48 +08:00 committed by Alex Deucher
parent fe1a3b2e41
commit db3144029c
1 changed files with 47 additions and 1 deletions
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48
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
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@ -35,6 +35,7 @@
#include "vega10/MMHUB/mmhub_1_0_offset.h"
#include "vega10/MMHUB/mmhub_1_0_sh_mask.h"
#include "vega10/HDP/hdp_4_0_offset.h"
#include "raven1/SDMA0/sdma0_4_1_default.h"
#include "soc15_common.h"
#include "soc15.h"
@ -44,6 +45,9 @@ MODULE_FIRMWARE("amdgpu/vega10_sdma.bin");
MODULE_FIRMWARE("amdgpu/vega10_sdma1.bin");
MODULE_FIRMWARE("amdgpu/raven_sdma.bin");
#define SDMA0_POWER_CNTL__ON_OFF_CONDITION_HOLD_TIME_MASK 0x000000F8L
#define SDMA0_POWER_CNTL__ON_OFF_STATUS_DURATION_TIME_MASK 0xFC000000L
static void sdma_v4_0_set_ring_funcs(struct amdgpu_device *adev);
static void sdma_v4_0_set_buffer_funcs(struct amdgpu_device *adev);
static void sdma_v4_0_set_vm_pte_funcs(struct amdgpu_device *adev);
@ -665,6 +669,47 @@ static int sdma_v4_0_gfx_resume(struct amdgpu_device *adev)
return 0;
}
static void sdma_v4_1_init_power_gating(struct amdgpu_device *adev)
{
uint32_t def, data;
/* Enable HW based PG. */
def = data = RREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_POWER_CNTL));
data |= SDMA0_POWER_CNTL__PG_CNTL_ENABLE_MASK;
if (data != def)
WREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_POWER_CNTL), data);
/* enable interrupt */
def = data = RREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_CNTL));
data |= SDMA0_CNTL__CTXEMPTY_INT_ENABLE_MASK;
if (data != def)
WREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_CNTL), data);
/* Configure hold time to filter in-valid power on/off request. Use default right now */
def = data = RREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_POWER_CNTL));
data &= ~SDMA0_POWER_CNTL__ON_OFF_CONDITION_HOLD_TIME_MASK;
data |= (mmSDMA0_POWER_CNTL_DEFAULT & SDMA0_POWER_CNTL__ON_OFF_CONDITION_HOLD_TIME_MASK);
/* Configure switch time for hysteresis purpose. Use default right now */
data &= ~SDMA0_POWER_CNTL__ON_OFF_STATUS_DURATION_TIME_MASK;
data |= (mmSDMA0_POWER_CNTL_DEFAULT & SDMA0_POWER_CNTL__ON_OFF_STATUS_DURATION_TIME_MASK);
if(data != def)
WREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_POWER_CNTL), data);
}
static void sdma_v4_0_init_pg(struct amdgpu_device *adev)
{
if (!(adev->pg_flags & AMD_PG_SUPPORT_SDMA))
return;
switch (adev->asic_type) {
case CHIP_RAVEN:
sdma_v4_1_init_power_gating(adev);
break;
default:
break;
}
}
/**
* sdma_v4_0_rlc_resume - setup and start the async dma engines
*
@ -675,7 +720,8 @@ static int sdma_v4_0_gfx_resume(struct amdgpu_device *adev)
*/
static int sdma_v4_0_rlc_resume(struct amdgpu_device *adev)
{
/* XXX todo */
sdma_v4_0_init_pg(adev);
return 0;
}