| Message ID | bebbfb68f5869720d7c886c08acfb21ae161c942.1673886390.git.jlanka@nvidia.com |
|---|---|
| State | New |
| Headers | show |
| Series | [SRU,J:linux-bluefield,1/1] UBUNTU: SAUCE: mlxbf-ptm: power and thermal management debugfs driver | expand |
On 1/16/23 9:39 AM, Jitendra Lanka wrote: > BugLink: https://bugs.launchpad.net/bugs/2002852 > > mlxbf-ptm driver implements debugfs interface for Bluefield > devices power and thermal management. It provides some parameters > that can be monitored by system software. > > Signed-off-by: Jitendra Lanka <jlanka@nvidia.com> > --- > debian.bluefield/config/config.common.ubuntu | 1 + > drivers/platform/mellanox/Kconfig | 10 + > drivers/platform/mellanox/Makefile | 1 + > drivers/platform/mellanox/mlxbf-ptm.c | 216 +++++++++++++++++++ > 4 files changed, 228 insertions(+) > create mode 100644 drivers/platform/mellanox/mlxbf-ptm.c > > diff --git a/debian.bluefield/config/config.common.ubuntu b/debian.bluefield/config/config.common.ubuntu > index 4d051e58dabd..c6e60a9dce5c 100644 > --- a/debian.bluefield/config/config.common.ubuntu > +++ b/debian.bluefield/config/config.common.ubuntu > @@ -5250,6 +5250,7 @@ CONFIG_MLXBF_PKA=m > CONFIG_MLXBF_PMC=m > CONFIG_MLXBF_TMFIFO=m > CONFIG_MLXBF_TRIO=m > +CONFIG_MLXBF_PTM=m > CONFIG_MLXFW=m > CONFIG_MLXREG_HOTPLUG=m > CONFIG_MLXREG_IO=m > diff --git a/drivers/platform/mellanox/Kconfig b/drivers/platform/mellanox/Kconfig > index 1339fbd0d8a0..7d7391d5d293 100644 > --- a/drivers/platform/mellanox/Kconfig > +++ b/drivers/platform/mellanox/Kconfig > @@ -82,6 +82,16 @@ config MLXBF_TRIO > This driver supports the TRIO PCIe root complex interface on > Mellanox BlueField SoCs. > > +config MLXBF_PTM > + tristate "BlueField Power and Thermal Management debugfs interface" > + depends on ARM64 > + depends on DEBUG_FS > + help > + If you say yes to this option, support will added for the > + mlxbf-ptm driver. This driver provides debugfs interface > + to userspace with information related to power and thermal > + management of the Bluefield device. > + > source "drivers/platform/mellanox/mlxbf_pka/Kconfig" > > endif # MELLANOX_PLATFORM > diff --git a/drivers/platform/mellanox/Makefile b/drivers/platform/mellanox/Makefile > index 7f67389f5a6c..40d1202de9ea 100644 > --- a/drivers/platform/mellanox/Makefile > +++ b/drivers/platform/mellanox/Makefile > @@ -8,6 +8,7 @@ obj-$(CONFIG_MLXBF_PMC) += mlxbf-pmc.o > obj-$(CONFIG_MLXBF_TMFIFO) += mlxbf-tmfifo.o > obj-$(CONFIG_MLXBF_TRIO) += mlx-trio.o > obj-$(CONFIG_MLXBF_LIVEFISH) += mlxbf-livefish.o > +obj-$(CONFIG_MLXBF_PTM) += mlxbf-ptm.o > obj-$(CONFIG_MLXREG_HOTPLUG) += mlxreg-hotplug.o > obj-$(CONFIG_MLXREG_IO) += mlxreg-io.o > obj-$(CONFIG_MLXBF_PKA) += mlxbf_pka/ > diff --git a/drivers/platform/mellanox/mlxbf-ptm.c b/drivers/platform/mellanox/mlxbf-ptm.c > new file mode 100644 > index 000000000000..3692018b9d60 > --- /dev/null > +++ b/drivers/platform/mellanox/mlxbf-ptm.c > @@ -0,0 +1,216 @@ > +// SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause > +/* > + * Nvidia Bluefield power and thermal debugfs driver > + * This driver provides a debugfs interface for systems management > + * software to monitor power and thermal actions. > + * > + * Copyright (C) 2023 NVIDIA Corporation. All rights reserved. > + * This Software is licensed under one of the following licenses: > + * > + * 1) under the terms of the "Common Public License 1.0" a copy of which is > + * available from the Open Source Initiative, see > + * http://www.opensource.org/licenses/cpl.php. > + * > + * 2) under the terms of the "The BSD License" a copy of which is > + * available from the Open Source Initiative, see > + * http://www.opensource.org/licenses/bsd-license.php. > + * > + * 3) under the terms of the "GNU General Public License (GPL) Version 2" a > + * copy of which is available from the Open Source Initiative, see > + * http://www.opensource.org/licenses/gpl-license.php. > + * > + * Licensee has the right to choose one of the above licenses. > + * > + * Redistributions of source code must retain the above copyright > + * notice and one of the license notices. > + * > + * Redistributions in binary form must reproduce both the above copyright > + * notice, one of the license notices in the documentation > + * and/or other materials provided with the distribution. > + */ > + > +#include <linux/kernel.h> > +#include <linux/debugfs.h> > +#include <linux/module.h> > +#include <linux/arm-smccc.h> > + > +/* SMC IDs */ > +#define MLNX_PTM_GET_VR0_POWER 0x82000101 > +#define MLNX_PTM_GET_VR1_POWER 0x82000102 > +#define MLNX_PTM_GET_THROTTLE_STATE 0x82000103 > +#define MLNX_PTM_GET_DDR_THLD 0x82000104 > +#define MLNX_PTM_GET_STATUS_REG 0x82000105 > +#define MLNX_PTM_GET_PTHROTTLE 0x82000106 > +#define MLNX_PTM_GET_TTHROTTLE 0x82000107 > +#define MLNX_PTM_GET_MAX_TEMP 0x82000108 > +#define MLNX_PTM_GET_PWR_EVT_CNT 0x82000109 > +#define MLNX_PTM_GET_TEMP_EVT_CNT 0x8200010A > + > +#define MLNX_POWER_ERROR 300 > + > +struct dentry *monitors; > + > +static int smc_call1(unsigned int smc_op, int smc_arg) > +{ > + struct arm_smccc_res res; > + > + arm_smccc_smc(smc_op, smc_arg, 0, 0, 0, 0, 0, 0, &res); > + > + return res.a0; > +} > + > +#define smc_call0(smc_op) smc_call1(smc_op, 0) > + > +static int throttling_state_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_THROTTLE_STATE); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(throttling_state_fops, > + throttling_state_show, NULL, "%llu\n"); > + > +static int pthrottling_state_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_PTHROTTLE); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(pthrottling_state_fops, > + pthrottling_state_show, NULL, "%llu\n"); > + > +static int tthrottling_state_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_TTHROTTLE); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(tthrottling_state_fops, > + tthrottling_state_show, NULL, "%llu\n"); > + > +static int core_temp_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_MAX_TEMP); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(core_temp_fops, > + core_temp_show, NULL, "%lld\n"); > + > +static int pwr_evt_counter_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_PWR_EVT_CNT); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(pwr_evt_counter_fops, > + pwr_evt_counter_show, NULL, "%llu\n"); > + > +static int temp_evt_counter_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_TEMP_EVT_CNT); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(temp_evt_counter_fops, > + temp_evt_counter_show, NULL, "%llu\n"); > + > +static int vr0_power_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_VR0_POWER); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(vr0_power_fops, vr0_power_show, NULL, "%llu\n"); > + > +static int vr1_power_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_VR1_POWER); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(vr1_power_fops, vr1_power_show, NULL, "%llu\n"); > + > +static int total_power_show(void *data, u64 *val) > +{ > + u64 v0, v1; > + > + v0 = smc_call0(MLNX_PTM_GET_VR0_POWER); > + if (v0 > MLNX_POWER_ERROR) > + v0 = 0; > + v1 = smc_call0(MLNX_PTM_GET_VR1_POWER); > + if (v1 > MLNX_POWER_ERROR) > + v1 = 0; > + *val = (v0 + v1); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(total_power_fops, total_power_show, NULL, "%llu\n"); > + > +static int ddr_thld_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_DDR_THLD); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(ddr_thld_fops, ddr_thld_show, NULL, "%llu\n"); > + > +static int error_status_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_STATUS_REG); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(error_status_fops, > + error_status_show, NULL, "%llu\n"); > + > + > +static int __init mlxbf_ptm_init(void) > +{ > + struct dentry *ptm_root, *status; > + > + ptm_root = debugfs_lookup("mlxbf-ptm", NULL); > + if (!ptm_root) > + ptm_root = debugfs_create_dir("mlxbf-ptm", NULL); > + > + monitors = debugfs_create_dir("monitors", ptm_root); > + status = debugfs_create_dir("status", monitors); > + > + debugfs_create_file("vr0_power", S_IRUGO, status, NULL, > + &vr0_power_fops); > + debugfs_create_file("vr1_power", S_IRUGO, status, NULL, > + &vr1_power_fops); > + debugfs_create_file("total_power", S_IRUGO, status, NULL, > + &total_power_fops); > + debugfs_create_file("ddr_temp", S_IRUGO, status, > + NULL, &ddr_thld_fops); > + debugfs_create_file("core_temp", S_IRUGO, status, > + NULL, &core_temp_fops); > + debugfs_create_file("power_throttling_event_count", S_IRUGO, status, > + NULL, &pwr_evt_counter_fops); > + debugfs_create_file("thermal_throttling_event_count", S_IRUGO, status, > + NULL, &temp_evt_counter_fops); > + debugfs_create_file("throttling_state", S_IRUGO, status, > + NULL, &throttling_state_fops); > + debugfs_create_file("power_throttling_state", S_IRUGO, status, > + NULL, &pthrottling_state_fops); > + debugfs_create_file("thermal_throttling_state", S_IRUGO, status, > + NULL, &tthrottling_state_fops); > + debugfs_create_file("error_state", S_IRUGO, status, > + NULL, &error_status_fops); > + > + return 0; > +} > + > +static void __exit mlxbf_ptm_exit(void) > +{ > + debugfs_remove_recursive(monitors); > +} > + > +module_init(mlxbf_ptm_init); > +module_exit(mlxbf_ptm_exit); > + > +MODULE_AUTHOR("Jitendra Lanka <jlanka@nvidia.com>"); > +MODULE_DESCRIPTION("Nvidia Bluefield power and thermal debugfs driver"); > +MODULE_LICENSE("Dual BSD/GPL"); > +MODULE_VERSION("1.0"); Acked-by: Tim Gardner <tim.gardner@canonical.com>
On 16.01.23 17:39, Jitendra Lanka wrote: > BugLink: https://bugs.launchpad.net/bugs/2002852 > > mlxbf-ptm driver implements debugfs interface for Bluefield > devices power and thermal management. It provides some parameters > that can be monitored by system software. > > Signed-off-by: Jitendra Lanka <jlanka@nvidia.com> This patch has already been applied from the other email thread. Thank you, Kleber > --- > debian.bluefield/config/config.common.ubuntu | 1 + > drivers/platform/mellanox/Kconfig | 10 + > drivers/platform/mellanox/Makefile | 1 + > drivers/platform/mellanox/mlxbf-ptm.c | 216 +++++++++++++++++++ > 4 files changed, 228 insertions(+) > create mode 100644 drivers/platform/mellanox/mlxbf-ptm.c > > diff --git a/debian.bluefield/config/config.common.ubuntu b/debian.bluefield/config/config.common.ubuntu > index 4d051e58dabd..c6e60a9dce5c 100644 > --- a/debian.bluefield/config/config.common.ubuntu > +++ b/debian.bluefield/config/config.common.ubuntu > @@ -5250,6 +5250,7 @@ CONFIG_MLXBF_PKA=m > CONFIG_MLXBF_PMC=m > CONFIG_MLXBF_TMFIFO=m > CONFIG_MLXBF_TRIO=m > +CONFIG_MLXBF_PTM=m > CONFIG_MLXFW=m > CONFIG_MLXREG_HOTPLUG=m > CONFIG_MLXREG_IO=m > diff --git a/drivers/platform/mellanox/Kconfig b/drivers/platform/mellanox/Kconfig > index 1339fbd0d8a0..7d7391d5d293 100644 > --- a/drivers/platform/mellanox/Kconfig > +++ b/drivers/platform/mellanox/Kconfig > @@ -82,6 +82,16 @@ config MLXBF_TRIO > This driver supports the TRIO PCIe root complex interface on > Mellanox BlueField SoCs. > > +config MLXBF_PTM > + tristate "BlueField Power and Thermal Management debugfs interface" > + depends on ARM64 > + depends on DEBUG_FS > + help > + If you say yes to this option, support will added for the > + mlxbf-ptm driver. This driver provides debugfs interface > + to userspace with information related to power and thermal > + management of the Bluefield device. > + > source "drivers/platform/mellanox/mlxbf_pka/Kconfig" > > endif # MELLANOX_PLATFORM > diff --git a/drivers/platform/mellanox/Makefile b/drivers/platform/mellanox/Makefile > index 7f67389f5a6c..40d1202de9ea 100644 > --- a/drivers/platform/mellanox/Makefile > +++ b/drivers/platform/mellanox/Makefile > @@ -8,6 +8,7 @@ obj-$(CONFIG_MLXBF_PMC) += mlxbf-pmc.o > obj-$(CONFIG_MLXBF_TMFIFO) += mlxbf-tmfifo.o > obj-$(CONFIG_MLXBF_TRIO) += mlx-trio.o > obj-$(CONFIG_MLXBF_LIVEFISH) += mlxbf-livefish.o > +obj-$(CONFIG_MLXBF_PTM) += mlxbf-ptm.o > obj-$(CONFIG_MLXREG_HOTPLUG) += mlxreg-hotplug.o > obj-$(CONFIG_MLXREG_IO) += mlxreg-io.o > obj-$(CONFIG_MLXBF_PKA) += mlxbf_pka/ > diff --git a/drivers/platform/mellanox/mlxbf-ptm.c b/drivers/platform/mellanox/mlxbf-ptm.c > new file mode 100644 > index 000000000000..3692018b9d60 > --- /dev/null > +++ b/drivers/platform/mellanox/mlxbf-ptm.c > @@ -0,0 +1,216 @@ > +// SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause > +/* > + * Nvidia Bluefield power and thermal debugfs driver > + * This driver provides a debugfs interface for systems management > + * software to monitor power and thermal actions. > + * > + * Copyright (C) 2023 NVIDIA Corporation. All rights reserved. > + * This Software is licensed under one of the following licenses: > + * > + * 1) under the terms of the "Common Public License 1.0" a copy of which is > + * available from the Open Source Initiative, see > + * http://www.opensource.org/licenses/cpl.php. > + * > + * 2) under the terms of the "The BSD License" a copy of which is > + * available from the Open Source Initiative, see > + * http://www.opensource.org/licenses/bsd-license.php. > + * > + * 3) under the terms of the "GNU General Public License (GPL) Version 2" a > + * copy of which is available from the Open Source Initiative, see > + * http://www.opensource.org/licenses/gpl-license.php. > + * > + * Licensee has the right to choose one of the above licenses. > + * > + * Redistributions of source code must retain the above copyright > + * notice and one of the license notices. > + * > + * Redistributions in binary form must reproduce both the above copyright > + * notice, one of the license notices in the documentation > + * and/or other materials provided with the distribution. > + */ > + > +#include <linux/kernel.h> > +#include <linux/debugfs.h> > +#include <linux/module.h> > +#include <linux/arm-smccc.h> > + > +/* SMC IDs */ > +#define MLNX_PTM_GET_VR0_POWER 0x82000101 > +#define MLNX_PTM_GET_VR1_POWER 0x82000102 > +#define MLNX_PTM_GET_THROTTLE_STATE 0x82000103 > +#define MLNX_PTM_GET_DDR_THLD 0x82000104 > +#define MLNX_PTM_GET_STATUS_REG 0x82000105 > +#define MLNX_PTM_GET_PTHROTTLE 0x82000106 > +#define MLNX_PTM_GET_TTHROTTLE 0x82000107 > +#define MLNX_PTM_GET_MAX_TEMP 0x82000108 > +#define MLNX_PTM_GET_PWR_EVT_CNT 0x82000109 > +#define MLNX_PTM_GET_TEMP_EVT_CNT 0x8200010A > + > +#define MLNX_POWER_ERROR 300 > + > +struct dentry *monitors; > + > +static int smc_call1(unsigned int smc_op, int smc_arg) > +{ > + struct arm_smccc_res res; > + > + arm_smccc_smc(smc_op, smc_arg, 0, 0, 0, 0, 0, 0, &res); > + > + return res.a0; > +} > + > +#define smc_call0(smc_op) smc_call1(smc_op, 0) > + > +static int throttling_state_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_THROTTLE_STATE); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(throttling_state_fops, > + throttling_state_show, NULL, "%llu\n"); > + > +static int pthrottling_state_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_PTHROTTLE); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(pthrottling_state_fops, > + pthrottling_state_show, NULL, "%llu\n"); > + > +static int tthrottling_state_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_TTHROTTLE); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(tthrottling_state_fops, > + tthrottling_state_show, NULL, "%llu\n"); > + > +static int core_temp_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_MAX_TEMP); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(core_temp_fops, > + core_temp_show, NULL, "%lld\n"); > + > +static int pwr_evt_counter_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_PWR_EVT_CNT); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(pwr_evt_counter_fops, > + pwr_evt_counter_show, NULL, "%llu\n"); > + > +static int temp_evt_counter_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_TEMP_EVT_CNT); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(temp_evt_counter_fops, > + temp_evt_counter_show, NULL, "%llu\n"); > + > +static int vr0_power_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_VR0_POWER); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(vr0_power_fops, vr0_power_show, NULL, "%llu\n"); > + > +static int vr1_power_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_VR1_POWER); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(vr1_power_fops, vr1_power_show, NULL, "%llu\n"); > + > +static int total_power_show(void *data, u64 *val) > +{ > + u64 v0, v1; > + > + v0 = smc_call0(MLNX_PTM_GET_VR0_POWER); > + if (v0 > MLNX_POWER_ERROR) > + v0 = 0; > + v1 = smc_call0(MLNX_PTM_GET_VR1_POWER); > + if (v1 > MLNX_POWER_ERROR) > + v1 = 0; > + *val = (v0 + v1); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(total_power_fops, total_power_show, NULL, "%llu\n"); > + > +static int ddr_thld_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_DDR_THLD); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(ddr_thld_fops, ddr_thld_show, NULL, "%llu\n"); > + > +static int error_status_show(void *data, u64 *val) > +{ > + *val = smc_call0(MLNX_PTM_GET_STATUS_REG); > + > + return 0; > +} > +DEFINE_SIMPLE_ATTRIBUTE(error_status_fops, > + error_status_show, NULL, "%llu\n"); > + > + > +static int __init mlxbf_ptm_init(void) > +{ > + struct dentry *ptm_root, *status; > + > + ptm_root = debugfs_lookup("mlxbf-ptm", NULL); > + if (!ptm_root) > + ptm_root = debugfs_create_dir("mlxbf-ptm", NULL); > + > + monitors = debugfs_create_dir("monitors", ptm_root); > + status = debugfs_create_dir("status", monitors); > + > + debugfs_create_file("vr0_power", S_IRUGO, status, NULL, > + &vr0_power_fops); > + debugfs_create_file("vr1_power", S_IRUGO, status, NULL, > + &vr1_power_fops); > + debugfs_create_file("total_power", S_IRUGO, status, NULL, > + &total_power_fops); > + debugfs_create_file("ddr_temp", S_IRUGO, status, > + NULL, &ddr_thld_fops); > + debugfs_create_file("core_temp", S_IRUGO, status, > + NULL, &core_temp_fops); > + debugfs_create_file("power_throttling_event_count", S_IRUGO, status, > + NULL, &pwr_evt_counter_fops); > + debugfs_create_file("thermal_throttling_event_count", S_IRUGO, status, > + NULL, &temp_evt_counter_fops); > + debugfs_create_file("throttling_state", S_IRUGO, status, > + NULL, &throttling_state_fops); > + debugfs_create_file("power_throttling_state", S_IRUGO, status, > + NULL, &pthrottling_state_fops); > + debugfs_create_file("thermal_throttling_state", S_IRUGO, status, > + NULL, &tthrottling_state_fops); > + debugfs_create_file("error_state", S_IRUGO, status, > + NULL, &error_status_fops); > + > + return 0; > +} > + > +static void __exit mlxbf_ptm_exit(void) > +{ > + debugfs_remove_recursive(monitors); > +} > + > +module_init(mlxbf_ptm_init); > +module_exit(mlxbf_ptm_exit); > + > +MODULE_AUTHOR("Jitendra Lanka <jlanka@nvidia.com>"); > +MODULE_DESCRIPTION("Nvidia Bluefield power and thermal debugfs driver"); > +MODULE_LICENSE("Dual BSD/GPL"); > +MODULE_VERSION("1.0");
diff --git a/debian.bluefield/config/config.common.ubuntu b/debian.bluefield/config/config.common.ubuntu index 4d051e58dabd..c6e60a9dce5c 100644 --- a/debian.bluefield/config/config.common.ubuntu +++ b/debian.bluefield/config/config.common.ubuntu @@ -5250,6 +5250,7 @@ CONFIG_MLXBF_PKA=m CONFIG_MLXBF_PMC=m CONFIG_MLXBF_TMFIFO=m CONFIG_MLXBF_TRIO=m +CONFIG_MLXBF_PTM=m CONFIG_MLXFW=m CONFIG_MLXREG_HOTPLUG=m CONFIG_MLXREG_IO=m diff --git a/drivers/platform/mellanox/Kconfig b/drivers/platform/mellanox/Kconfig index 1339fbd0d8a0..7d7391d5d293 100644 --- a/drivers/platform/mellanox/Kconfig +++ b/drivers/platform/mellanox/Kconfig @@ -82,6 +82,16 @@ config MLXBF_TRIO This driver supports the TRIO PCIe root complex interface on Mellanox BlueField SoCs. +config MLXBF_PTM + tristate "BlueField Power and Thermal Management debugfs interface" + depends on ARM64 + depends on DEBUG_FS + help + If you say yes to this option, support will added for the + mlxbf-ptm driver. This driver provides debugfs interface + to userspace with information related to power and thermal + management of the Bluefield device. + source "drivers/platform/mellanox/mlxbf_pka/Kconfig" endif # MELLANOX_PLATFORM diff --git a/drivers/platform/mellanox/Makefile b/drivers/platform/mellanox/Makefile index 7f67389f5a6c..40d1202de9ea 100644 --- a/drivers/platform/mellanox/Makefile +++ b/drivers/platform/mellanox/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_MLXBF_PMC) += mlxbf-pmc.o obj-$(CONFIG_MLXBF_TMFIFO) += mlxbf-tmfifo.o obj-$(CONFIG_MLXBF_TRIO) += mlx-trio.o obj-$(CONFIG_MLXBF_LIVEFISH) += mlxbf-livefish.o +obj-$(CONFIG_MLXBF_PTM) += mlxbf-ptm.o obj-$(CONFIG_MLXREG_HOTPLUG) += mlxreg-hotplug.o obj-$(CONFIG_MLXREG_IO) += mlxreg-io.o obj-$(CONFIG_MLXBF_PKA) += mlxbf_pka/ diff --git a/drivers/platform/mellanox/mlxbf-ptm.c b/drivers/platform/mellanox/mlxbf-ptm.c new file mode 100644 index 000000000000..3692018b9d60 --- /dev/null +++ b/drivers/platform/mellanox/mlxbf-ptm.c @@ -0,0 +1,216 @@ +// SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause +/* + * Nvidia Bluefield power and thermal debugfs driver + * This driver provides a debugfs interface for systems management + * software to monitor power and thermal actions. + * + * Copyright (C) 2023 NVIDIA Corporation. All rights reserved. + * This Software is licensed under one of the following licenses: + * + * 1) under the terms of the "Common Public License 1.0" a copy of which is + * available from the Open Source Initiative, see + * http://www.opensource.org/licenses/cpl.php. + * + * 2) under the terms of the "The BSD License" a copy of which is + * available from the Open Source Initiative, see + * http://www.opensource.org/licenses/bsd-license.php. + * + * 3) under the terms of the "GNU General Public License (GPL) Version 2" a + * copy of which is available from the Open Source Initiative, see + * http://www.opensource.org/licenses/gpl-license.php. + * + * Licensee has the right to choose one of the above licenses. + * + * Redistributions of source code must retain the above copyright + * notice and one of the license notices. + * + * Redistributions in binary form must reproduce both the above copyright + * notice, one of the license notices in the documentation + * and/or other materials provided with the distribution. + */ + +#include <linux/kernel.h> +#include <linux/debugfs.h> +#include <linux/module.h> +#include <linux/arm-smccc.h> + +/* SMC IDs */ +#define MLNX_PTM_GET_VR0_POWER 0x82000101 +#define MLNX_PTM_GET_VR1_POWER 0x82000102 +#define MLNX_PTM_GET_THROTTLE_STATE 0x82000103 +#define MLNX_PTM_GET_DDR_THLD 0x82000104 +#define MLNX_PTM_GET_STATUS_REG 0x82000105 +#define MLNX_PTM_GET_PTHROTTLE 0x82000106 +#define MLNX_PTM_GET_TTHROTTLE 0x82000107 +#define MLNX_PTM_GET_MAX_TEMP 0x82000108 +#define MLNX_PTM_GET_PWR_EVT_CNT 0x82000109 +#define MLNX_PTM_GET_TEMP_EVT_CNT 0x8200010A + +#define MLNX_POWER_ERROR 300 + +struct dentry *monitors; + +static int smc_call1(unsigned int smc_op, int smc_arg) +{ + struct arm_smccc_res res; + + arm_smccc_smc(smc_op, smc_arg, 0, 0, 0, 0, 0, 0, &res); + + return res.a0; +} + +#define smc_call0(smc_op) smc_call1(smc_op, 0) + +static int throttling_state_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_THROTTLE_STATE); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(throttling_state_fops, + throttling_state_show, NULL, "%llu\n"); + +static int pthrottling_state_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_PTHROTTLE); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(pthrottling_state_fops, + pthrottling_state_show, NULL, "%llu\n"); + +static int tthrottling_state_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_TTHROTTLE); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(tthrottling_state_fops, + tthrottling_state_show, NULL, "%llu\n"); + +static int core_temp_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_MAX_TEMP); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(core_temp_fops, + core_temp_show, NULL, "%lld\n"); + +static int pwr_evt_counter_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_PWR_EVT_CNT); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(pwr_evt_counter_fops, + pwr_evt_counter_show, NULL, "%llu\n"); + +static int temp_evt_counter_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_TEMP_EVT_CNT); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(temp_evt_counter_fops, + temp_evt_counter_show, NULL, "%llu\n"); + +static int vr0_power_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_VR0_POWER); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(vr0_power_fops, vr0_power_show, NULL, "%llu\n"); + +static int vr1_power_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_VR1_POWER); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(vr1_power_fops, vr1_power_show, NULL, "%llu\n"); + +static int total_power_show(void *data, u64 *val) +{ + u64 v0, v1; + + v0 = smc_call0(MLNX_PTM_GET_VR0_POWER); + if (v0 > MLNX_POWER_ERROR) + v0 = 0; + v1 = smc_call0(MLNX_PTM_GET_VR1_POWER); + if (v1 > MLNX_POWER_ERROR) + v1 = 0; + *val = (v0 + v1); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(total_power_fops, total_power_show, NULL, "%llu\n"); + +static int ddr_thld_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_DDR_THLD); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(ddr_thld_fops, ddr_thld_show, NULL, "%llu\n"); + +static int error_status_show(void *data, u64 *val) +{ + *val = smc_call0(MLNX_PTM_GET_STATUS_REG); + + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(error_status_fops, + error_status_show, NULL, "%llu\n"); + + +static int __init mlxbf_ptm_init(void) +{ + struct dentry *ptm_root, *status; + + ptm_root = debugfs_lookup("mlxbf-ptm", NULL); + if (!ptm_root) + ptm_root = debugfs_create_dir("mlxbf-ptm", NULL); + + monitors = debugfs_create_dir("monitors", ptm_root); + status = debugfs_create_dir("status", monitors); + + debugfs_create_file("vr0_power", S_IRUGO, status, NULL, + &vr0_power_fops); + debugfs_create_file("vr1_power", S_IRUGO, status, NULL, + &vr1_power_fops); + debugfs_create_file("total_power", S_IRUGO, status, NULL, + &total_power_fops); + debugfs_create_file("ddr_temp", S_IRUGO, status, + NULL, &ddr_thld_fops); + debugfs_create_file("core_temp", S_IRUGO, status, + NULL, &core_temp_fops); + debugfs_create_file("power_throttling_event_count", S_IRUGO, status, + NULL, &pwr_evt_counter_fops); + debugfs_create_file("thermal_throttling_event_count", S_IRUGO, status, + NULL, &temp_evt_counter_fops); + debugfs_create_file("throttling_state", S_IRUGO, status, + NULL, &throttling_state_fops); + debugfs_create_file("power_throttling_state", S_IRUGO, status, + NULL, &pthrottling_state_fops); + debugfs_create_file("thermal_throttling_state", S_IRUGO, status, + NULL, &tthrottling_state_fops); + debugfs_create_file("error_state", S_IRUGO, status, + NULL, &error_status_fops); + + return 0; +} + +static void __exit mlxbf_ptm_exit(void) +{ + debugfs_remove_recursive(monitors); +} + +module_init(mlxbf_ptm_init); +module_exit(mlxbf_ptm_exit); + +MODULE_AUTHOR("Jitendra Lanka <jlanka@nvidia.com>"); +MODULE_DESCRIPTION("Nvidia Bluefield power and thermal debugfs driver"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_VERSION("1.0");
BugLink: https://bugs.launchpad.net/bugs/2002852 mlxbf-ptm driver implements debugfs interface for Bluefield devices power and thermal management. It provides some parameters that can be monitored by system software. Signed-off-by: Jitendra Lanka <jlanka@nvidia.com> --- debian.bluefield/config/config.common.ubuntu | 1 + drivers/platform/mellanox/Kconfig | 10 + drivers/platform/mellanox/Makefile | 1 + drivers/platform/mellanox/mlxbf-ptm.c | 216 +++++++++++++++++++ 4 files changed, 228 insertions(+) create mode 100644 drivers/platform/mellanox/mlxbf-ptm.c