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Message-ID: <8bf13544d3ea85dd70e6d3abee517ef92195aa6a.camel@intel.com>
Date: Wed, 21 Jun 2023 14:35:01 +0000
From: "Zhang, Rui" <rui.zhang@...el.com>
To: "srinivas.pandruvada@...ux.intel.com"
<srinivas.pandruvada@...ux.intel.com>,
"rafael@...nel.org" <rafael@...nel.org>,
"daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>
CC: "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/7] thermal: int340x: processor_thermal: Move mailbox
code to common module
On Tue, 2023-06-20 at 16:01 -0700, Srinivas Pandruvada wrote:
> The processor thermal mailbox is used for workload type request and
> also in the processor thermal RFIM module. So, move the workload type
> request code to its own module from the current processor thermal
> mailbox module.
>
> processor_thermal_mailbox.c contains only mailbox read/write related
> source code. The source related to workload_types requests is moved
> to
> a module processor_thermal_wlt_req.c.
>
> In addition
> -Rename PROC_THERMAL_FEATURE_MBOX to PROC_THERMAL_FEATURE_WLT_REQ.
> - proc_thermal_mbox_add(), which adds workload type sysfs attribute
> group
> is renamed to proc_thermal_wlt_req_add().
> -proc_thermal_mbox_remove() is renamed to
> proc_thermal_wlt_req_remove().
>
> While here, resolve check patch warnings for 100 columns for only
> modified
> lines.
>
> No functional changes are expected.
>
> Signed-off-by: Srinivas Pandruvada
> <srinivas.pandruvada@...ux.intel.com>
> ---
> .../thermal/intel/int340x_thermal/Makefile | 1 +
> .../processor_thermal_device.c | 8 +-
> .../processor_thermal_device.h | 12 +-
> .../processor_thermal_device_pci.c | 10 +-
> .../processor_thermal_device_pci_legacy.c | 3 +-
> .../int340x_thermal/processor_thermal_mbox.c | 130 ----------------
> -
> .../processor_thermal_wlt_req.c | 137
> ++++++++++++++++++
> 7 files changed, 160 insertions(+), 141 deletions(-)
> create mode 100644
> drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_req.c
>
> diff --git a/drivers/thermal/intel/int340x_thermal/Makefile
> b/drivers/thermal/intel/int340x_thermal/Makefile
> index 4e852ce4a5d5..76e053e541f0 100644
> --- a/drivers/thermal/intel/int340x_thermal/Makefile
> +++ b/drivers/thermal/intel/int340x_thermal/Makefile
> @@ -10,5 +10,6 @@ obj-$(CONFIG_INT340X_THERMAL) +=
> processor_thermal_device_pci.o
> obj-$(CONFIG_PROC_THERMAL_MMIO_RAPL) += processor_thermal_rapl.o
> obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_rfim.o
> obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_mbox.o
> +obj-$(CONFIG_INT340X_THERMAL) += processor_thermal_wlt_req.o
> obj-$(CONFIG_INT3406_THERMAL) += int3406_thermal.o
> obj-$(CONFIG_ACPI_THERMAL_REL) += acpi_thermal_rel.o
> diff --git
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
> index 3ca0a2f5937f..48f6c72b05f6 100644
> ---
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
> +++
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
> @@ -346,8 +346,8 @@ int proc_thermal_mmio_add(struct pci_dev *pdev,
> }
> }
>
> - if (feature_mask & PROC_THERMAL_FEATURE_MBOX) {
> - ret = proc_thermal_mbox_add(pdev, proc_priv);
> + if (feature_mask & PROC_THERMAL_FEATURE_WLT_REQ) {
> + ret = proc_thermal_wlt_req_add(pdev, proc_priv);
> if (ret) {
> dev_err(&pdev->dev, "failed to add MBOX
> interface\n");
> goto err_rem_rfim;
> @@ -374,8 +374,8 @@ void proc_thermal_mmio_remove(struct pci_dev
> *pdev, struct proc_thermal_device *
> proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_DVFS)
> proc_thermal_rfim_remove(pdev);
>
> - if (proc_priv->mmio_feature_mask & PROC_THERMAL_FEATURE_MBOX)
> - proc_thermal_mbox_remove(pdev);
> + if (proc_priv->mmio_feature_mask &
> PROC_THERMAL_FEATURE_WLT_REQ)
> + proc_thermal_wlt_req_remove(pdev);
> }
> EXPORT_SYMBOL_GPL(proc_thermal_mmio_remove);
>
> diff --git
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h
> index 7acaa8f1b896..7cdeca2edc21 100644
> ---
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h
> +++
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.h
> @@ -59,7 +59,7 @@ struct rapl_mmio_regs {
> #define PROC_THERMAL_FEATURE_RAPL 0x01
> #define PROC_THERMAL_FEATURE_FIVR 0x02
> #define PROC_THERMAL_FEATURE_DVFS 0x04
> -#define PROC_THERMAL_FEATURE_MBOX 0x08
> +#define PROC_THERMAL_FEATURE_WLT_REQ 0x08
> #define PROC_THERMAL_FEATURE_DLVR 0x10
>
> #if IS_ENABLED(CONFIG_PROC_THERMAL_MMIO_RAPL)
> @@ -80,8 +80,14 @@ static void __maybe_unused
> proc_thermal_rapl_remove(void)
> int proc_thermal_rfim_add(struct pci_dev *pdev, struct
> proc_thermal_device *proc_priv);
> void proc_thermal_rfim_remove(struct pci_dev *pdev);
>
> -int proc_thermal_mbox_add(struct pci_dev *pdev, struct
> proc_thermal_device *proc_priv);
> -void proc_thermal_mbox_remove(struct pci_dev *pdev);
> +int proc_thermal_wlt_req_add(struct pci_dev *pdev, struct
> proc_thermal_device *proc_priv);
> +void proc_thermal_wlt_req_remove(struct pci_dev *pdev);
> +
> +#define MBOX_CMD_WORKLOAD_TYPE_READ 0x0E
> +#define MBOX_CMD_WORKLOAD_TYPE_WRITE 0x0F
> +
> +#define MBOX_DATA_BIT_AC_DC 30
> +#define MBOX_DATA_BIT_VALID 31
>
> int processor_thermal_send_mbox_read_cmd(struct pci_dev *pdev, u16
> id, u64 *resp);
> int processor_thermal_send_mbox_write_cmd(struct pci_dev *pdev, u16
> id, u32 data);
> diff --git
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.
> c
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.
> c
> index 0d1e98007270..5a2bcfff0a68 100644
> ---
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.
> c
> +++
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.
> c
> @@ -350,9 +350,13 @@ static SIMPLE_DEV_PM_OPS(proc_thermal_pci_pm,
> proc_thermal_pci_suspend,
> proc_thermal_pci_resume);
>
> static const struct pci_device_id proc_thermal_pci_ids[] = {
> - { PCI_DEVICE_DATA(INTEL, ADL_THERMAL,
> PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR |
> PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_MBOX) },
> - { PCI_DEVICE_DATA(INTEL, MTLP_THERMAL,
> PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR |
> PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_MBOX |
> PROC_THERMAL_FEATURE_DLVR) },
> - { PCI_DEVICE_DATA(INTEL, RPL_THERMAL,
> PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR |
> PROC_THERMAL_FEATURE_DVFS | PROC_THERMAL_FEATURE_MBOX) },
> + { PCI_DEVICE_DATA(INTEL, ADL_THERMAL,
> PROC_THERMAL_FEATURE_RAPL |
> + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS |
> PROC_THERMAL_FEATURE_WLT_REQ) },
> + { PCI_DEVICE_DATA(INTEL, MTLP_THERMAL,
> PROC_THERMAL_FEATURE_RAPL |
> + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS |
> PROC_THERMAL_FEATURE_WLT_REQ |
> + PROC_THERMAL_FEATURE_DLVR) },
> + { PCI_DEVICE_DATA(INTEL, RPL_THERMAL,
> PROC_THERMAL_FEATURE_RAPL |
> + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_DVFS |
> PROC_THERMAL_FEATURE_WLT_REQ) },
> { },
> };
>
> diff --git
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_
> legacy.c
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_
> legacy.c
> index 09e032f822f3..b8c58a44fb93 100644
> ---
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_
> legacy.c
> +++
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci_
> legacy.c
> @@ -137,7 +137,8 @@ static const struct pci_device_id
> proc_thermal_pci_ids[] = {
> { PCI_DEVICE_DATA(INTEL, ICL_THERMAL,
> PROC_THERMAL_FEATURE_RAPL) },
> { PCI_DEVICE_DATA(INTEL, JSL_THERMAL, 0) },
> { PCI_DEVICE_DATA(INTEL, SKL_THERMAL,
> PROC_THERMAL_FEATURE_RAPL) },
> - { PCI_DEVICE_DATA(INTEL, TGL_THERMAL,
> PROC_THERMAL_FEATURE_RAPL | PROC_THERMAL_FEATURE_FIVR |
> PROC_THERMAL_FEATURE_MBOX) },
> + { PCI_DEVICE_DATA(INTEL, TGL_THERMAL,
> PROC_THERMAL_FEATURE_RAPL |
> + PROC_THERMAL_FEATURE_FIVR | PROC_THERMAL_FEATURE_WLT_REQ)
> },
> { },
> };
>
> diff --git
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c
> index 0b89a4340ff4..ec766c5615b7 100644
> --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c
> +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_mbox.c
> @@ -10,18 +10,12 @@
> #include <linux/io-64-nonatomic-lo-hi.h>
> #include "processor_thermal_device.h"
>
> -#define MBOX_CMD_WORKLOAD_TYPE_READ 0x0E
> -#define MBOX_CMD_WORKLOAD_TYPE_WRITE 0x0F
> -
> #define MBOX_OFFSET_DATA 0x5810
> #define MBOX_OFFSET_INTERFACE 0x5818
>
> #define MBOX_BUSY_BIT 31
> #define MBOX_RETRY_COUNT 100
>
> -#define MBOX_DATA_BIT_VALID 31
> -#define MBOX_DATA_BIT_AC_DC 30
> -
> static DEFINE_MUTEX(mbox_lock);
>
> static int wait_for_mbox_ready(struct proc_thermal_device
> *proc_priv)
> @@ -114,128 +108,4 @@ int
> processor_thermal_send_mbox_write_cmd(struct pci_dev *pdev, u16 id,
> u32 data
> }
> EXPORT_SYMBOL_NS_GPL(processor_thermal_send_mbox_write_cmd,
> INT340X_THERMAL);
>
> -/* List of workload types */
> -static const char * const workload_types[] = {
> - "none",
> - "idle",
> - "semi_active",
> - "bursty",
> - "sustained",
> - "battery_life",
> - NULL
> -};
> -
> -static ssize_t workload_available_types_show(struct device *dev,
> - struct
> device_attribute *attr,
> - char *buf)
> -{
> - int i = 0;
> - int ret = 0;
> -
> - while (workload_types[i] != NULL)
> - ret += sprintf(&buf[ret], "%s ",
> workload_types[i++]);
> -
> - ret += sprintf(&buf[ret], "\n");
> -
> - return ret;
> -}
> -
> -static DEVICE_ATTR_RO(workload_available_types);
> -
> -static ssize_t workload_type_store(struct device *dev,
> - struct device_attribute *attr,
> - const char *buf, size_t count)
> -{
> - struct pci_dev *pdev = to_pci_dev(dev);
> - char str_preference[15];
> - u32 data = 0;
> - ssize_t ret;
> -
> - ret = sscanf(buf, "%14s", str_preference);
> - if (ret != 1)
> - return -EINVAL;
> -
> - ret = match_string(workload_types, -1, str_preference);
> - if (ret < 0)
> - return ret;
> -
> - ret &= 0xff;
> -
> - if (ret)
> - data = BIT(MBOX_DATA_BIT_VALID) |
> BIT(MBOX_DATA_BIT_AC_DC);
> -
> - data |= ret;
> -
> - ret = send_mbox_write_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_WRITE,
> data);
> - if (ret)
> - return false;
> -
> - return count;
> -}
> -
> -static ssize_t workload_type_show(struct device *dev,
> - struct device_attribute *attr,
> - char *buf)
> -{
> - struct pci_dev *pdev = to_pci_dev(dev);
> - u64 cmd_resp;
> - int ret;
> -
> - ret = send_mbox_read_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_READ,
> &cmd_resp);
> - if (ret)
> - return false;
> -
> - cmd_resp &= 0xff;
> -
> - if (cmd_resp > ARRAY_SIZE(workload_types) - 1)
> - return -EINVAL;
> -
> - return sprintf(buf, "%s\n", workload_types[cmd_resp]);
> -}
> -
> -static DEVICE_ATTR_RW(workload_type);
> -
> -static struct attribute *workload_req_attrs[] = {
> - &dev_attr_workload_available_types.attr,
> - &dev_attr_workload_type.attr,
> - NULL
> -};
> -
> -static const struct attribute_group workload_req_attribute_group = {
> - .attrs = workload_req_attrs,
> - .name = "workload_request"
> -};
> -
> -static bool workload_req_created;
> -
> -int proc_thermal_mbox_add(struct pci_dev *pdev, struct
> proc_thermal_device *proc_priv)
> -{
> - u64 cmd_resp;
> - int ret;
> -
> - /* Check if there is a mailbox support, if fails return
> success */
> - ret = send_mbox_read_cmd(pdev, MBOX_CMD_WORKLOAD_TYPE_READ,
> &cmd_resp);
> - if (ret)
> - return 0;
> -
> - ret = sysfs_create_group(&pdev->dev.kobj,
> &workload_req_attribute_group);
> - if (ret)
> - return ret;
> -
> - workload_req_created = true;
> -
> - return 0;
> -}
> -EXPORT_SYMBOL_GPL(proc_thermal_mbox_add);
> -
> -void proc_thermal_mbox_remove(struct pci_dev *pdev)
> -{
> - if (workload_req_created)
> - sysfs_remove_group(&pdev->dev.kobj,
> &workload_req_attribute_group);
> -
> - workload_req_created = false;
> -
> -}
> -EXPORT_SYMBOL_GPL(proc_thermal_mbox_remove);
> -
> MODULE_LICENSE("GPL v2");
> diff --git
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_req.c
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_req.c
> new file mode 100644
> index 000000000000..d22c86fad231
> --- /dev/null
> +++
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_wlt_req.c
> @@ -0,0 +1,137 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * processor thermal device for Workload type hints
> + * update from user space
> + *
> + * Copyright (c) 2020-2023, Intel Corporation.
Just curious, is this the proper change when re-locating the code?
> + */
> +
> +#include <linux/pci.h>
> +#include "processor_thermal_device.h"
> +
> +/* List of workload types */
> +static const char * const workload_types[] = {
> + "none",
> + "idle",
> + "semi_active",
> + "bursty",
> + "sustained",
> + "battery_life",
> + NULL
> +};
> +
> +static ssize_t workload_available_types_show(struct device *dev,
> + struct
> device_attribute *attr,
> + char *buf)
> +{
> + int i = 0;
> + int ret = 0;
> +
> + while (workload_types[i] != NULL)
> + ret += sprintf(&buf[ret], "%s ",
> workload_types[i++]);
> +
> + ret += sprintf(&buf[ret], "\n");
> +
> + return ret;
> +}
> +
> +static DEVICE_ATTR_RO(workload_available_types);
> +
> +static ssize_t workload_type_store(struct device *dev,
> + struct device_attribute *attr,
> + const char *buf, size_t count)
> +{
> + struct pci_dev *pdev = to_pci_dev(dev);
> + char str_preference[15];
> + u32 data = 0;
> + ssize_t ret;
> +
> + ret = sscanf(buf, "%14s", str_preference);
> + if (ret != 1)
> + return -EINVAL;
> +
> + ret = match_string(workload_types, -1, str_preference);
> + if (ret < 0)
> + return ret;
> +
> + ret &= 0xff;
> +
> + if (ret)
> + data = BIT(MBOX_DATA_BIT_VALID) |
> BIT(MBOX_DATA_BIT_AC_DC);
> +
> + data |= ret;
> +
> + ret = processor_thermal_send_mbox_write_cmd(pdev,
> MBOX_CMD_WORKLOAD_TYPE_WRITE, data);
> + if (ret)
> + return false;
> +
> + return count;
> +}
> +
> +static ssize_t workload_type_show(struct device *dev,
> + struct device_attribute *attr,
> + char *buf)
> +{
> + struct pci_dev *pdev = to_pci_dev(dev);
> + u64 cmd_resp;
> + int ret;
> +
> + ret = processor_thermal_send_mbox_read_cmd(pdev,
> MBOX_CMD_WORKLOAD_TYPE_READ, &cmd_resp);
> + if (ret)
> + return false;
> +
> + cmd_resp &= 0xff;
> +
> + if (cmd_resp > ARRAY_SIZE(workload_types) - 1)
> + return -EINVAL;
> +
> + return sprintf(buf, "%s\n", workload_types[cmd_resp]);
> +}
> +
> +static DEVICE_ATTR_RW(workload_type);
> +
> +static struct attribute *workload_req_attrs[] = {
> + &dev_attr_workload_available_types.attr,
> + &dev_attr_workload_type.attr,
> + NULL
> +};
> +
> +static const struct attribute_group workload_req_attribute_group = {
> + .attrs = workload_req_attrs,
> + .name = "workload_request"
> +};
> +
> +static bool workload_req_created;
> +
> +int proc_thermal_wlt_req_add(struct pci_dev *pdev, struct
> proc_thermal_device *proc_priv)
> +{
> + u64 cmd_resp;
> + int ret;
> +
> + /* Check if there is a mailbox support, if fails return
> success */
> + ret = processor_thermal_send_mbox_read_cmd(pdev,
> MBOX_CMD_WORKLOAD_TYPE_READ, &cmd_resp);
> + if (ret)
> + return 0;
> +
> + ret = sysfs_create_group(&pdev->dev.kobj,
> &workload_req_attribute_group);
> + if (ret)
> + return ret;
> +
> + workload_req_created = true;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(proc_thermal_wlt_req_add);
> +
> +void proc_thermal_wlt_req_remove(struct pci_dev *pdev)
> +{
> + if (workload_req_created)
> + sysfs_remove_group(&pdev->dev.kobj,
> &workload_req_attribute_group);
> +
> + workload_req_created = false;
> +
> +}
extra blank line.
This is already there in the previous code, but still better to clean
it up.
Other than that,
Reviewed-by: Zhang Rui <rui.zhang@...el.com>
thanks,
rui
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