sysfs interface to read pcie speed&width info on navi1x.
Signed-off-by: Kenneth Feng <kenneth.feng@xxxxxxx>
---
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 10 +++---
drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h | 8 +++++
drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 50 ++++++++++++++++++++++++++-
drivers/gpu/drm/amd/powerplay/navi10_ppt.h | 3 ++
4 files changed, 66 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 57459a6..69243a8 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -1068,10 +1068,6 @@ static int smu_smc_table_hw_init(struct smu_context *smu,
return ret;
if (adev->asic_type != CHIP_ARCTURUS) {
- ret = smu_override_pcie_parameters(smu);
- if (ret)
- return ret;
-
ret = smu_notify_display_change(smu);
if (ret)
return ret;
@@ -1100,6 +1096,12 @@ static int smu_smc_table_hw_init(struct smu_context *smu,
return ret;
}
+ if (adev->asic_type != CHIP_ARCTURUS) {
+ ret = smu_override_pcie_parameters(smu);
+ if (ret)
+ return ret;
+ }
+
ret = smu_set_default_od_settings(smu, initialize);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h b/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
index 0ba7a72..6061490 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/smu_v11_0.h
@@ -48,6 +48,8 @@
#define SMU11_TOOL_SIZE 0x19000
+#define MAX_PCIE_CONF 2
+
#define CLK_MAP(clk, index) \
[SMU_##clk] = {1, (index)}
@@ -88,6 +90,11 @@ struct smu_11_0_dpm_table {
uint32_t max; /* MHz */
};
+struct smu_11_0_pcie_table {
+ uint8_t pcie_gen[MAX_PCIE_CONF];
+ uint8_t pcie_lane[MAX_PCIE_CONF];
+};
+
struct smu_11_0_dpm_tables {
struct smu_11_0_dpm_table soc_table;
struct smu_11_0_dpm_table gfx_table;
@@ -100,6 +107,7 @@ struct smu_11_0_dpm_tables {
struct smu_11_0_dpm_table display_table;
struct smu_11_0_dpm_table phy_table;
struct smu_11_0_dpm_table fclk_table;
+ struct smu_11_0_pcie_table pcie_table;
};
struct smu_11_0_dpm_context {
diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index 36cf313..8855bcc 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -36,6 +36,7 @@
#include "navi10_ppt.h"
#include "smu_v11_0_pptable.h"
#include "smu_v11_0_ppsmc.h"
+#include "nbio/nbio_7_4_sh_mask.h"
#include "asic_reg/mp/mp_11_0_sh_mask.h"
@@ -599,6 +600,7 @@ static int navi10_set_default_dpm_table(struct smu_context *smu)
struct smu_table_context *table_context = &smu->smu_table;
struct smu_11_0_dpm_context *dpm_context = smu_dpm->dpm_context;
PPTable_t *driver_ppt = NULL;
+ int i;
driver_ppt = table_context->driver_pptable;
@@ -629,6 +631,11 @@ static int navi10_set_default_dpm_table(struct smu_context *smu)
dpm_context->dpm_tables.phy_table.min = driver_ppt->FreqTablePhyclk[0];
dpm_context->dpm_tables.phy_table.max = driver_ppt->FreqTablePhyclk[NUM_PHYCLK_DPM_LEVELS - 1];
+ for (i = 0; i < MAX_PCIE_CONF; i++) {
+ dpm_context->dpm_tables.pcie_table.pcie_gen[i] = driver_ppt->PcieGenSpeed[i];
+ dpm_context->dpm_tables.pcie_table.pcie_lane[i] = driver_ppt->PcieLaneCount[i];
+ }
+
return 0;
}
@@ -710,6 +717,11 @@ static int navi10_print_clk_levels(struct smu_context *smu,
struct smu_table_context *table_context = &smu->smu_table;
od_table = (OverDriveTable_t *)table_context->overdrive_table;
od_settings = smu->od_settings;
+ uint32_t gen_speed, lane_width;
+ struct smu_dpm_context *smu_dpm = &smu->smu_dpm;
+ struct smu_11_0_dpm_context *dpm_context = smu_dpm->dpm_context;
+ struct amdgpu_device *adev = smu->adev;
+ PPTable_t *pptable = (PPTable_t *)table_context->driver_pptable;
switch (clk_type) {
case SMU_GFXCLK:
@@ -760,6 +772,30 @@ static int navi10_print_clk_levels(struct smu_context *smu,
}
break;
+ case SMU_PCIE:
+ gen_speed = (RREG32_PCIE(smnPCIE_LC_SPEED_CNTL) &
+ PSWUSP0_PCIE_LC_SPEED_CNTL__LC_CURRENT_DATA_RATE_MASK)
+ >> PSWUSP0_PCIE_LC_SPEED_CNTL__LC_CURRENT_DATA_RATE__SHIFT;
+ lane_width = (RREG32_PCIE(smnPCIE_LC_LINK_WIDTH_CNTL) &
+ PCIE_LC_LINK_WIDTH_CNTL__LC_LINK_WIDTH_RD_MASK)
+ >> PCIE_LC_LINK_WIDTH_CNTL__LC_LINK_WIDTH_RD__SHIFT;
+ for (i = 0; i < NUM_LINK_LEVELS; i++)
+ size += sprintf(buf + size, "%d: %s %s %dMhz %s\n", i,
+ (dpm_context->dpm_tables.pcie_table.pcie_gen[i] == 0) ? "2.5GT/s," :
+ (dpm_context->dpm_tables.pcie_table.pcie_gen[i] == 1) ? "5.0GT/s," :
+ (dpm_context->dpm_tables.pcie_table.pcie_gen[i] == 2) ? "8.0GT/s," :
+ (dpm_context->dpm_tables.pcie_table.pcie_gen[i] == 3) ? "16.0GT/s," : "",
+ (dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 1) ? "x1" :
+ (dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 2) ? "x2" :
+ (dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 3) ? "x4" :
+ (dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 4) ? "x8" :
+ (dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 5) ? "x12" :
+ (dpm_context->dpm_tables.pcie_table.pcie_lane[i] == 6) ? "x16" : "",
+ pptable->LclkFreq[i],
+ (gen_speed == dpm_context->dpm_tables.pcie_table.pcie_gen[i]) &&
+ (lane_width == dpm_context->dpm_tables.pcie_table.pcie_lane[i]) ?
+ "*" : "");
+ break;
case SMU_OD_SCLK:
if (!smu->od_enabled || !od_table || !od_settings)
break;
@@ -1690,6 +1726,9 @@ static int navi10_update_pcie_parameters(struct smu_context *smu,
int ret, i;
uint32_t smu_pcie_arg;
+ struct smu_dpm_context *smu_dpm = &smu->smu_dpm;
+ struct smu_11_0_dpm_context *dpm_context = smu_dpm->dpm_context;
+
for (i = 0; i < NUM_LINK_LEVELS; i++) {
smu_pcie_arg = (i << 16) |
((pptable->PcieGenSpeed[i] <= pcie_gen_cap) ? (pptable->PcieGenSpeed[i] << 8) :
@@ -1698,8 +1737,17 @@ static int navi10_update_pcie_parameters(struct smu_context *smu,
ret = smu_send_smc_msg_with_param(smu,
SMU_MSG_OverridePcieParameters,
smu_pcie_arg);
+ if (!ret) {
+ if (pptable->PcieGenSpeed[i] > pcie_gen_cap)
+ dpm_context->dpm_tables.pcie_table.pcie_gen[i] = pcie_gen_cap;
+ if (pptable->PcieLaneCount[i] > pcie_width_cap)
+ dpm_context->dpm_tables.pcie_table.pcie_lane[i] = pcie_width_cap;
+ } else {
+ return ret;
+ }
}
- return ret;
+
+ return 0;
}
static inline void navi10_dump_od_table(OverDriveTable_t *od_table) {
diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.h b/drivers/gpu/drm/amd/powerplay/navi10_ppt.h
index fd6dda1..ec03c799 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.h
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.h
@@ -35,6 +35,9 @@
#define NAVI10_VOLTAGE_SCALE (4)
+#define smnPCIE_LC_SPEED_CNTL 0x11140290
+#define smnPCIE_LC_LINK_WIDTH_CNTL 0x11140288
+
extern void navi10_set_ppt_funcs(struct smu_context *smu);
#endif
--
2.7.4
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