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drm/amdgpu: store pcie gen mask and link width

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We'll need this later for pcie dpm.

Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2015-11-11 19:45:06 -05:00
parent 60d8edd415
commit d0dd7f0cc3
4 changed files with 99 additions and 20 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -1637,8 +1637,12 @@ struct amdgpu_pm {
const struct firmware *fw; /* SMC firmware */
uint32_t fw_version;
const struct amdgpu_dpm_funcs *funcs;
uint32_t pcie_gen_mask;
uint32_t pcie_mlw_mask;
};
void amdgpu_get_pcie_info(struct amdgpu_device *adev);
/*
* UVD
*/

78
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -38,6 +38,7 @@
#include "amdgpu_i2c.h"
#include "atom.h"
#include "amdgpu_atombios.h"
#include "amd_pcie.h"
#ifdef CONFIG_DRM_AMDGPU_CIK
#include "cik.h"
#endif
@ -1932,6 +1933,83 @@ retry:
return r;
}
void amdgpu_get_pcie_info(struct amdgpu_device *adev)
{
u32 mask;
int ret;
if (pci_is_root_bus(adev->pdev->bus))
return;
if (amdgpu_pcie_gen2 == 0)
return;
if (adev->flags & AMD_IS_APU)
return;
ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask);
if (!ret) {
adev->pm.pcie_gen_mask = (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 |
CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3);
if (mask & DRM_PCIE_SPEED_25)
adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1;
if (mask & DRM_PCIE_SPEED_50)
adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2;
if (mask & DRM_PCIE_SPEED_80)
adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3;
}
ret = drm_pcie_get_max_link_width(adev->ddev, &mask);
if (!ret) {
switch (mask) {
case 32:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case 16:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case 12:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case 8:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case 4:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case 2:
adev->pm.pcie_mlw_mask = (CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 |
CAIL_PCIE_LINK_WIDTH_SUPPORT_X1);
break;
case 1:
adev->pm.pcie_mlw_mask = CAIL_PCIE_LINK_WIDTH_SUPPORT_X1;
break;
default:
break;
}
}
}
/*
* Debugfs

24
drivers/gpu/drm/amd/amdgpu/cik.c
View File

@ -32,6 +32,7 @@
#include "amdgpu_vce.h"
#include "cikd.h"
#include "atom.h"
#include "amd_pcie.h"
#include "cik.h"
#include "gmc_v7_0.h"
@ -1595,8 +1596,8 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
{
struct pci_dev *root = adev->pdev->bus->self;
int bridge_pos, gpu_pos;
u32 speed_cntl, mask, current_data_rate;
int ret, i;
u32 speed_cntl, current_data_rate;
int i;
u16 tmp16;
if (pci_is_root_bus(adev->pdev->bus))
@ -1608,23 +1609,20 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
if (adev->flags & AMD_IS_APU)
return;
ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask);
if (ret != 0)
return;
if (!(mask & (DRM_PCIE_SPEED_50 | DRM_PCIE_SPEED_80)))
if (!(adev->pm.pcie_gen_mask & (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3)))
return;
speed_cntl = RREG32_PCIE(ixPCIE_LC_SPEED_CNTL);
current_data_rate = (speed_cntl & PCIE_LC_SPEED_CNTL__LC_CURRENT_DATA_RATE_MASK) >>
PCIE_LC_SPEED_CNTL__LC_CURRENT_DATA_RATE__SHIFT;
if (mask & DRM_PCIE_SPEED_80) {
if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) {
if (current_data_rate == 2) {
DRM_INFO("PCIE gen 3 link speeds already enabled\n");
return;
}
DRM_INFO("enabling PCIE gen 3 link speeds, disable with amdgpu.pcie_gen2=0\n");
} else if (mask & DRM_PCIE_SPEED_50) {
} else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2) {
if (current_data_rate == 1) {
DRM_INFO("PCIE gen 2 link speeds already enabled\n");
return;
@ -1640,7 +1638,7 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
if (!gpu_pos)
return;
if (mask & DRM_PCIE_SPEED_80) {
if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3) {
/* re-try equalization if gen3 is not already enabled */
if (current_data_rate != 2) {
u16 bridge_cfg, gpu_cfg;
@ -1735,9 +1733,9 @@ static void cik_pcie_gen3_enable(struct amdgpu_device *adev)
pci_read_config_word(adev->pdev, gpu_pos + PCI_EXP_LNKCTL2, &tmp16);
tmp16 &= ~0xf;
if (mask & DRM_PCIE_SPEED_80)
if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3)
tmp16 |= 3; /* gen3 */
else if (mask & DRM_PCIE_SPEED_50)
else if (adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2)
tmp16 |= 2; /* gen2 */
else
tmp16 |= 1; /* gen1 */
@ -2450,6 +2448,8 @@ static int cik_common_early_init(void *handle)
return -EINVAL;
}
amdgpu_get_pcie_info(adev);
return 0;
}

13
drivers/gpu/drm/amd/amdgpu/vi.c
View File

@ -31,6 +31,7 @@
#include "amdgpu_vce.h"
#include "amdgpu_ucode.h"
#include "atom.h"
#include "amd_pcie.h"
#include "gmc/gmc_8_1_d.h"
#include "gmc/gmc_8_1_sh_mask.h"
@ -1052,9 +1053,6 @@ static int vi_set_vce_clocks(struct amdgpu_device *adev, u32 evclk, u32 ecclk)
static void vi_pcie_gen3_enable(struct amdgpu_device *adev)
{
u32 mask;
int ret;
if (pci_is_root_bus(adev->pdev->bus))
return;
@ -1064,11 +1062,8 @@ static void vi_pcie_gen3_enable(struct amdgpu_device *adev)
if (adev->flags & AMD_IS_APU)
return;
ret = drm_pcie_get_speed_cap_mask(adev->ddev, &mask);
if (ret != 0)
return;
if (!(mask & (DRM_PCIE_SPEED_50 | DRM_PCIE_SPEED_80)))
if (!(adev->pm.pcie_gen_mask & (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 |
CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3)))
return;
/* todo */
@ -1473,6 +1468,8 @@ static int vi_common_early_init(void *handle)
if (amdgpu_smc_load_fw && smc_enabled)
adev->firmware.smu_load = true;
amdgpu_get_pcie_info(adev);
return 0;
}