On Mon, 23 May 2022, Badal Nilawar <badal.nilawar@xxxxxxxxx> wrote:
> From: Dale B Stimson <dale.b.stimson@xxxxxxxxx>
>
> As part of the System Managemenent Interface (SMI), use the HWMON
> subsystem to display power utilization.
>
> Signed-off-by: Dale B Stimson <dale.b.stimson@xxxxxxxxx>
> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx>
> Signed-off-by: Riana Tauro <riana.tauro@xxxxxxxxx>
> Signed-off-by: Badal Nilawar <badal.nilawar@xxxxxxxxx>
> ---
> .../ABI/testing/sysfs-driver-intel-i915-hwmon | 19 +
> drivers/gpu/drm/i915/Kconfig | 1 +
> drivers/gpu/drm/i915/Makefile | 1 +
> drivers/gpu/drm/i915/i915_driver.c | 5 +
> drivers/gpu/drm/i915/i915_drv.h | 2 +
> drivers/gpu/drm/i915/i915_hwmon.c | 410 ++++++++++++++++++
> drivers/gpu/drm/i915/i915_hwmon.h | 44 ++
> drivers/gpu/drm/i915/i915_reg.h | 15 +
> drivers/gpu/drm/i915/intel_mchbar_regs.h | 9 +
> 9 files changed, 506 insertions(+)
> create mode 100644 Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon
> create mode 100644 drivers/gpu/drm/i915/i915_hwmon.c
> create mode 100644 drivers/gpu/drm/i915/i915_hwmon.h
>
> diff --git a/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon
> new file mode 100644
> index 000000000000..c680dd842358
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-driver-intel-i915-hwmon
> @@ -0,0 +1,19 @@
> +What: /sys/devices/.../hwmon/hwmon<i>/power1_max
> +Date: June 2021
> +KernelVersion: 5.14
Please check the dates and versions in all these files.
> +Contact: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> +Description: RW. Card reactive sustained (PL1/Tau) power limit in microwatts.
> +
> + The power controller will throttle the operating frequency
> + if the power averaged over a window (typically seconds)
> + exceeds this limit.
> +
> + Only supported for particular Intel i915 graphics platforms.
> +
> +What: /sys/devices/.../hwmon/hwmon<i>/power1_max_default
> +Date: June 2021
> +KernelVersion: 5.14
> +Contact: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> +Description: RO. Card default power limit (default TDP setting).
> +
> + Only supported for particular Intel i915 graphics platforms.
> diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
> index 7ae3b7d67fcf..c60cfacd4c47 100644
> --- a/drivers/gpu/drm/i915/Kconfig
> +++ b/drivers/gpu/drm/i915/Kconfig
> @@ -19,6 +19,7 @@ config DRM_I915
> select DRM_MIPI_DSI
> select RELAY
> select IRQ_WORK
> + select HWMON
> # i915 depends on ACPI_VIDEO when ACPI is enabled
> # but for select to work, need to select ACPI_VIDEO's dependencies, ick
> select BACKLIGHT_CLASS_DEVICE if ACPI
> diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
> index d2b18f03a33c..e1d5912ea879 100644
> --- a/drivers/gpu/drm/i915/Makefile
> +++ b/drivers/gpu/drm/i915/Makefile
> @@ -36,6 +36,7 @@ i915-y += i915_driver.o \
> i915_drm_client.o \
> i915_config.o \
> i915_getparam.o \
> + i915_hwmon.o \
> i915_ioctl.o \
> i915_irq.o \
> i915_mitigations.o \
> diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
> index b47746152d97..6f678587a771 100644
> --- a/drivers/gpu/drm/i915/i915_driver.c
> +++ b/drivers/gpu/drm/i915/i915_driver.c
> @@ -80,6 +80,7 @@
> #include "i915_drm_client.h"
> #include "i915_drv.h"
> #include "i915_getparam.h"
> +#include "i915_hwmon.h"
> #include "i915_ioc32.h"
> #include "i915_ioctl.h"
> #include "i915_irq.h"
> @@ -702,6 +703,8 @@ static void i915_driver_register(struct drm_i915_private *dev_priv)
>
> intel_gt_driver_register(to_gt(dev_priv));
>
> + i915_hwmon_register(dev_priv);
> +
> intel_display_driver_register(dev_priv);
>
> intel_power_domains_enable(dev_priv);
> @@ -728,6 +731,8 @@ static void i915_driver_unregister(struct drm_i915_private *dev_priv)
>
> intel_display_driver_unregister(dev_priv);
>
> + i915_hwmon_unregister(dev_priv);
> +
> intel_gt_driver_unregister(to_gt(dev_priv));
>
> i915_perf_unregister(dev_priv);
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index c5fc402d9c50..e16bedba2d84 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -769,6 +769,8 @@ struct drm_i915_private {
>
> struct i915_perf perf;
>
> + struct i915_hwmon *hwmon;
> +
> /* Abstract the submission mechanism (legacy ringbuffer or execlists) away */
> struct intel_gt gt0;
>
> diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c
> new file mode 100644
> index 000000000000..b94c11f2517f
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/i915_hwmon.c
> @@ -0,0 +1,410 @@
> +// SPDX-License-Identifier: MIT
> +/*
> + * Copyright © 2020 Intel Corporation
> + */
> +
> +/*
> + * Power-related hwmon entries.
> + */
> +
> +#include <linux/hwmon.h>
> +#include <linux/hwmon-sysfs.h>
> +#include <linux/types.h>
> +
> +#include "i915_drv.h"
> +#include "i915_hwmon.h"
> +#include "intel_mchbar_regs.h"
> +
> +/*
> + * SF_* - scale factors for particular quantities according to hwmon spec.
> + * - power - microwatts
> + */
> +#define SF_POWER 1000000
> +
> +#define FIELD_SHIFT(__mask) \
> + (BUILD_BUG_ON_ZERO(!__builtin_constant_p(__mask)) + \
> + BUILD_BUG_ON_ZERO((__mask) == 0) + \
> + __bf_shf(__mask))
> +
> +static void
> +_locked_with_pm_intel_uncore_rmw(struct i915_hwmon_drvdata *ddat,
> + i915_reg_t reg, u32 clear, u32 set)
> +{
> + struct i915_hwmon *hwmon = ddat->dd_hwmon;
> + struct intel_uncore *uncore = ddat->dd_uncore;
> + intel_wakeref_t wakeref;
> +
> + mutex_lock(&hwmon->hwmon_lock);
> +
> + with_intel_runtime_pm(uncore->rpm, wakeref)
> + intel_uncore_rmw(uncore, reg, clear, set);
> +
> + mutex_unlock(&hwmon->hwmon_lock);
> +}
> +
> +static u64
> +_scale_and_shift(u32 in, u32 scale_factor, int nshift)
> +{
> + u64 out = mul_u32_u32(scale_factor, in);
> +
> + /* Shift, rounding to nearest */
> + if (nshift > 0)
> + out = (out + (1 << (nshift - 1))) >> nshift;
> + return out;
> +}
> +
> +/*
> + * This function's return type of u64 allows for the case where the scaling
> + * of the field taken from the 32-bit register value might cause a result to
> + * exceed 32 bits.
> + */
> +static u64
> +_field_read_and_scale(struct i915_hwmon_drvdata *ddat, i915_reg_t rgadr,
> + u32 field_msk, int field_shift,
> + int nshift, u32 scale_factor)
> +{
> + struct intel_uncore *uncore = ddat->dd_uncore;
> + intel_wakeref_t wakeref;
> + u32 reg_value;
> +
> + with_intel_runtime_pm(uncore->rpm, wakeref)
> + reg_value = intel_uncore_read(uncore, rgadr);
> +
> + reg_value = (reg_value & field_msk) >> field_shift;
> +
> + return _scale_and_shift(reg_value, scale_factor, nshift);
> +}
> +
> +static void
> +_field_scale_and_write(struct i915_hwmon_drvdata *ddat, i915_reg_t rgadr,
> + u32 field_msk, int field_shift,
> + int nshift, unsigned int scale_factor, long lval)
> +{
> + u32 nval;
> + u32 bits_to_clear;
> + u32 bits_to_set;
> +
> + /* Computation in 64-bits to avoid overflow. Round to nearest. */
> + nval = DIV_ROUND_CLOSEST_ULL((u64)lval << nshift, scale_factor);
> +
> + bits_to_clear = field_msk;
> + bits_to_set = (nval << field_shift) & field_msk;
> +
> + _locked_with_pm_intel_uncore_rmw(ddat, rgadr,
> + bits_to_clear, bits_to_set);
> +}
> +
> +static ssize_t
> +i915_power1_max_default_show(struct device *dev, struct device_attribute *attr,
> + char *buf)
> +{
> + struct i915_hwmon_drvdata *ddat = dev_get_drvdata(dev);
> + struct i915_hwmon *hwmon = ddat->dd_hwmon;
> + u64 val = 0; /* uapi specifies to keep visible but return 0 if unsupported */
> +
> + if (i915_mmio_reg_valid(hwmon->rg.pkg_power_sku))
> + val = _field_read_and_scale(ddat,
> + hwmon->rg.pkg_power_sku,
> + PKG_PKG_TDP,
> + FIELD_SHIFT(PKG_PKG_TDP),
> + hwmon->scl_shift_power,
> + SF_POWER);
> + return sysfs_emit(buf, "%llu\n", val);
> +}
> +
> +static SENSOR_DEVICE_ATTR(power1_max_default, 0444,
> + i915_power1_max_default_show, NULL, 0);
> +
> +static struct attribute *hwmon_attributes[] = {
> + &sensor_dev_attr_power1_max_default.dev_attr.attr,
> + NULL
> +};
> +
> +static umode_t hwmon_attributes_visible(struct kobject *kobj,
> + struct attribute *attr, int index)
> +{
> + struct device *dev = kobj_to_dev(kobj);
> + struct i915_hwmon_drvdata *ddat = dev_get_drvdata(dev);
> + struct drm_i915_private *i915 = ddat->dd_uncore->i915;
> + i915_reg_t rgadr;
> +
> + if (attr == &sensor_dev_attr_power1_max_default.dev_attr.attr)
> + return IS_DGFX(i915) ? attr->mode : 0;
> + else
> + return 0;
> +
> + if (!i915_mmio_reg_valid(rgadr))
> + return 0;
> +
> + return attr->mode;
> +}
> +
> +static const struct attribute_group hwmon_attrgroup = {
> + .attrs = hwmon_attributes,
> + .is_visible = hwmon_attributes_visible,
> +};
> +
> +static const struct attribute_group *hwmon_groups[] = {
> + &hwmon_attrgroup,
> + NULL
> +};
> +
> +/*
> + * HWMON SENSOR TYPE = hwmon_power
> + * - Sustained Power (power1_max)
> + */
> +static const u32 i915_config_power[] = {
> + HWMON_P_MAX,
> + 0
> +};
> +
> +static const struct hwmon_channel_info i915_power = {
> + .type = hwmon_power,
> + .config = i915_config_power,
> +};
> +
> +static const struct hwmon_channel_info *i915_info[] = {
> + &i915_power,
> + NULL
> +};
> +
> +static umode_t
> +i915_power_is_visible(const struct i915_hwmon_drvdata *ddat, u32 attr, int chan)
> +{
> + struct i915_hwmon *hwmon = ddat->dd_hwmon;
> + i915_reg_t rgadr;
> +
> + switch (attr) {
> + case hwmon_power_max:
> + rgadr = hwmon->rg.pkg_rapl_limit;
> + break;
> + default:
> + return 0;
> + }
> +
> + if (!i915_mmio_reg_valid(rgadr))
> + return 0;
> +
> + return 0664;
> +}
> +
> +static int
> +i915_power_read(struct i915_hwmon_drvdata *ddat, u32 attr, int chan, long *val)
> +{
> + struct i915_hwmon *hwmon = ddat->dd_hwmon;
> + int ret = 0;
> +
> + switch (attr) {
> + case hwmon_power_max:
> + *val = _field_read_and_scale(ddat,
> + hwmon->rg.pkg_rapl_limit,
> + PKG_PWR_LIM_1,
> + FIELD_SHIFT(PKG_PWR_LIM_1),
> + hwmon->scl_shift_power,
> + SF_POWER);
> + break;
> + default:
> + ret = -EOPNOTSUPP;
> + }
> +
> + return ret;
> +}
> +
> +static int
> +i915_power_write(struct i915_hwmon_drvdata *ddat, u32 attr, int chan, long val)
> +{
> + struct i915_hwmon *hwmon = ddat->dd_hwmon;
> + int ret = 0;
> +
> + switch (attr) {
> + case hwmon_power_max:
> + _field_scale_and_write(ddat,
> + hwmon->rg.pkg_rapl_limit,
> + PKG_PWR_LIM_1,
> + FIELD_SHIFT(PKG_PWR_LIM_1),
> + hwmon->scl_shift_power,
> + SF_POWER, val);
> + break;
> + default:
> + ret = -EOPNOTSUPP;
> + }
> +
> + return ret;
> +}
> +
> +static umode_t
> +i915_is_visible(const void *drvdata, enum hwmon_sensor_types type,
> + u32 attr, int channel)
> +{
> + struct i915_hwmon_drvdata *ddat = (struct i915_hwmon_drvdata *)drvdata;
> +
> + switch (type) {
> + case hwmon_power:
> + return i915_power_is_visible(ddat, attr, channel);
> + default:
> + return 0;
> + }
> +}
> +
> +static int
> +i915_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> + int channel, long *val)
> +{
> + struct i915_hwmon_drvdata *ddat = dev_get_drvdata(dev);
> +
> + switch (type) {
> + case hwmon_power:
> + return i915_power_read(ddat, attr, channel, val);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static int
> +i915_write(struct device *dev, enum hwmon_sensor_types type, u32 attr,
> + int channel, long val)
> +{
> + struct i915_hwmon_drvdata *ddat = dev_get_drvdata(dev);
> +
> + switch (type) {
> + case hwmon_power:
> + return i915_power_write(ddat, attr, channel, val);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static const struct hwmon_ops i915_hwmon_ops = {
> + .is_visible = i915_is_visible,
> + .read = i915_read,
> + .write = i915_write,
> +};
> +
> +static const struct hwmon_chip_info i915_chip_info = {
> + .ops = &i915_hwmon_ops,
> + .info = i915_info,
> +};
> +
> +static void
> +i915_hwmon_get_preregistration_info(struct drm_i915_private *i915)
> +{
> + struct i915_hwmon *hwmon = i915->hwmon;
> + struct intel_uncore *uncore = &i915->uncore;
> + struct i915_hwmon_drvdata *ddat = &hwmon->ddat;
> + intel_wakeref_t wakeref;
> + u32 val_sku_unit;
> + __le32 le_sku_unit;
> +
> + if (IS_DG1(i915) || IS_DG2(i915)) {
> + hwmon->rg.pkg_power_sku_unit = PCU_PACKAGE_POWER_SKU_UNIT;
> + hwmon->rg.pkg_power_sku = INVALID_MMIO_REG;
> + hwmon->rg.pkg_rapl_limit = PCU_PACKAGE_RAPL_LIMIT;
> + } else {
> + hwmon->rg.pkg_power_sku_unit = INVALID_MMIO_REG;
> + hwmon->rg.pkg_power_sku = INVALID_MMIO_REG;
> + hwmon->rg.pkg_rapl_limit = INVALID_MMIO_REG;
> + }
> +
> + wakeref = intel_runtime_pm_get(uncore->rpm);
> +
> + /*
> + * The contents of register hwmon->rg.pkg_power_sku_unit do not change,
> + * so read it once and store the shift values.
> + *
> + * For some platforms, this value is defined as available "for all
> + * tiles", with the values consistent across all tiles.
> + * In this case, use the tile 0 value for all.
> + */
> + if (i915_mmio_reg_valid(hwmon->rg.pkg_power_sku_unit))
> + val_sku_unit = intel_uncore_read(uncore,
> + hwmon->rg.pkg_power_sku_unit);
> + else
> + val_sku_unit = 0;
> +
> + intel_runtime_pm_put(uncore->rpm, wakeref);
> +
> + le_sku_unit = cpu_to_le32(val_sku_unit);
> + hwmon->scl_shift_power = le32_get_bits(le_sku_unit, PKG_PWR_UNIT);
> +
> + /*
> + * The value of power1_max is reset to the default on reboot, but is
> + * not reset by a module unload/load sequence. To allow proper
> + * functioning after a module reload, the value for power1_max is
> + * restored to its original value at module unload time in
> + * i915_hwmon_unregister().
> + */
> + hwmon->power_max_initial_value =
> + (u32)_field_read_and_scale(ddat,
> + hwmon->rg.pkg_rapl_limit,
> + PKG_PWR_LIM_1,
> + FIELD_SHIFT(PKG_PWR_LIM_1),
> + hwmon->scl_shift_power, SF_POWER);
> +}
> +
> +void i915_hwmon_register(struct drm_i915_private *i915)
> +{
> + struct device *dev = i915->drm.dev;
> + struct i915_hwmon *hwmon;
> + struct device *hwmon_dev;
> + struct i915_hwmon_drvdata *ddat;
> +
> + hwmon = kzalloc(sizeof(*hwmon), GFP_KERNEL);
> + if (!hwmon)
> + return;
> +
> + i915->hwmon = hwmon;
> +
> + mutex_init(&hwmon->hwmon_lock);
> +
> + ddat = &hwmon->ddat;
> +
> + ddat->dd_hwmon = hwmon;
> + ddat->dd_uncore = &i915->uncore;
> + snprintf(ddat->dd_name, sizeof(ddat->dd_name), "i915");
> +
> + i915_hwmon_get_preregistration_info(i915);
> +
> + /* hwmon_dev points to device hwmon<i> */
> + hwmon_dev = hwmon_device_register_with_info(dev, ddat->dd_name,
> + ddat,
> + &i915_chip_info,
> + hwmon_groups);
> +
> + if (IS_ERR(hwmon_dev)) {
> + mutex_destroy(&hwmon->hwmon_lock);
> + i915->hwmon = NULL;
> + kfree(hwmon);
> + return;
> + }
> +
> + ddat->dd_hwmon_dev = hwmon_dev;
> +}
> +
> +void i915_hwmon_unregister(struct drm_i915_private *i915)
> +{
> + struct i915_hwmon *hwmon;
> + struct i915_hwmon_drvdata *ddat;
> +
> + hwmon = fetch_and_zero(&i915->hwmon);
> + if (!hwmon)
> + return;
> +
> + ddat = &hwmon->ddat;
> +
> + if (hwmon->power_max_initial_value) {
> + /* Restore power1_max. */
> + _field_scale_and_write(ddat, hwmon->rg.pkg_rapl_limit,
> + PKG_PWR_LIM_1,
> + FIELD_SHIFT(PKG_PWR_LIM_1),
> + hwmon->scl_shift_power,
> + SF_POWER,
> + hwmon->power_max_initial_value);
> + }
> +
> + if (ddat->dd_hwmon_dev)
> + hwmon_device_unregister(ddat->dd_hwmon_dev);
> +
> + mutex_destroy(&hwmon->hwmon_lock);
> +
> + kfree(hwmon);
> +}
> diff --git a/drivers/gpu/drm/i915/i915_hwmon.h b/drivers/gpu/drm/i915/i915_hwmon.h
> new file mode 100644
> index 000000000000..396b758aefce
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/i915_hwmon.h
> @@ -0,0 +1,44 @@
> +/* SPDX-License-Identifier: MIT */
> +
> +/*
> + * Copyright © 2020 Intel Corporation
> + */
> +
> +#ifndef __INTEL_HWMON_H__
> +#define __INTEL_HWMON_H__
> +
> +#include <linux/types.h>
> +#include <linux/mutex.h>
> +#include <linux/device.h>
> +#include "i915_reg.h"
> +
> +struct drm_i915_private;
> +
> +struct i915_hwmon_reg {
> + i915_reg_t pkg_power_sku_unit;
> + i915_reg_t pkg_power_sku;
> + i915_reg_t pkg_rapl_limit;
> +};
> +
> +struct i915_hwmon_drvdata {
> + struct i915_hwmon *dd_hwmon;
> + struct intel_uncore *dd_uncore;
> + struct device *dd_hwmon_dev;
> + char dd_name[12];
> +};
> +
> +struct i915_hwmon {
> + struct i915_hwmon_drvdata ddat;
> +
> + struct mutex hwmon_lock; /* counter overflow logic and rmw */
> +
> + struct i915_hwmon_reg rg;
> +
> + u32 power_max_initial_value;
> +
> + int scl_shift_power;
> +};
> +
> +void i915_hwmon_register(struct drm_i915_private *i915);
> +void i915_hwmon_unregister(struct drm_i915_private *i915);
> +#endif
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index d8579ab9384c..1c570c706ff8 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -1866,6 +1866,21 @@
> #define POWER_LIMIT_4_MASK REG_BIT(9)
> #define POWER_LIMIT_1_MASK REG_BIT(11)
> #define POWER_LIMIT_2_MASK REG_BIT(12)
> +/*
> + * *_PACKAGE_POWER_SKU - SKU power and timing parameters.
> + * Used herein as a 64-bit register.
> + * These masks are defined using GENMASK_ULL as REG_GENMASK is limited to u32
> + * and as GENMASK is "long" and therefore 32-bits on a 32-bit system.
> + * PKG_PKG_TDP, PKG_MIN_PWR, and PKG_MAX_PWR are scaled in the same way as
> + * PKG_PWR_LIM_*, above.
> + * PKG_MAX_WIN has sub-fields for x and y, and has the value: is 1.x * 2^y.
> + */
> +#define PKG_PKG_TDP GENMASK_ULL(14, 0)
> +#define PKG_MIN_PWR GENMASK_ULL(30, 16)
> +#define PKG_MAX_PWR GENMASK_ULL(46, 32)
> +#define PKG_MAX_WIN GENMASK_ULL(54, 48)
> +#define PKG_MAX_WIN_Y GENMASK_ULL(54, 53)
> +#define PKG_MAX_WIN_X GENMASK_ULL(52, 48)
>
> #define CHV_CLK_CTL1 _MMIO(0x101100)
> #define VLV_CLK_CTL2 _MMIO(0x101104)
> diff --git a/drivers/gpu/drm/i915/intel_mchbar_regs.h b/drivers/gpu/drm/i915/intel_mchbar_regs.h
> index 2aad2f0cc8db..247561d7974c 100644
> --- a/drivers/gpu/drm/i915/intel_mchbar_regs.h
> +++ b/drivers/gpu/drm/i915/intel_mchbar_regs.h
> @@ -191,11 +191,20 @@
>
> #define GEN6_GT_PERF_STATUS _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5948)
> #define GEN6_RP_STATE_LIMITS _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5994)
> +#define PCU_PACKAGE_POWER_SKU_UNIT _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5938)
> +#define PKG_PWR_UNIT REG_GENMASK(3, 0)
> +#define PKG_TIME_UNIT REG_GENMASK(19, 16)
> +
> #define GEN6_RP_STATE_CAP _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5998)
> #define RP0_CAP_MASK REG_GENMASK(7, 0)
> #define RP1_CAP_MASK REG_GENMASK(15, 8)
> #define RPN_CAP_MASK REG_GENMASK(23, 16)
>
> +#define PCU_PACKAGE_RAPL_LIMIT _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x59a0)
> +#define PKG_PWR_LIM_1 REG_GENMASK(14, 0)
> +#define PKG_PWR_LIM_1_EN REG_BIT(15)
> +#define PKG_PWR_LIM_1_TIME REG_GENMASK(23, 17)
> +
> /* snb MCH registers for priority tuning */
> #define MCH_SSKPD _MMIO(MCHBAR_MIRROR_BASE_SNB + 0x5d10)
> #define SSKPD_NEW_WM0_MASK_HSW REG_GENMASK64(63, 56)
--
Jani Nikula, Intel Open Source Graphics Center
