From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/drivers/hwmon/fam15h_power.c | 121 +++++++++++++++++++++++++++--------- 1 file changed, 92 insertions(+), 29 deletions(-) (limited to 'kernel/drivers/hwmon/fam15h_power.c') diff --git a/kernel/drivers/hwmon/fam15h_power.c b/kernel/drivers/hwmon/fam15h_power.c index 3057dfc7e..5f7067d7b 100644 --- a/kernel/drivers/hwmon/fam15h_power.c +++ b/kernel/drivers/hwmon/fam15h_power.c @@ -26,6 +26,7 @@ #include #include #include +#include MODULE_DESCRIPTION("AMD Family 15h CPU processor power monitor"); MODULE_AUTHOR("Andreas Herrmann "); @@ -41,11 +42,21 @@ MODULE_LICENSE("GPL"); #define REG_TDP_RUNNING_AVERAGE 0xe0 #define REG_TDP_LIMIT3 0xe8 +#define FAM15H_MIN_NUM_ATTRS 2 +#define FAM15H_NUM_GROUPS 2 + +#define MSR_F15H_CU_MAX_PWR_ACCUMULATOR 0xc001007b + struct fam15h_power_data { struct pci_dev *pdev; unsigned int tdp_to_watts; unsigned int base_tdp; unsigned int processor_pwr_watts; + unsigned int cpu_pwr_sample_ratio; + const struct attribute_group *groups[FAM15H_NUM_GROUPS]; + struct attribute_group group; + /* maximum accumulated power of a compute unit */ + u64 max_cu_acc_power; }; static ssize_t show_power(struct device *dev, @@ -59,8 +70,19 @@ static ssize_t show_power(struct device *dev, pci_bus_read_config_dword(f4->bus, PCI_DEVFN(PCI_SLOT(f4->devfn), 5), REG_TDP_RUNNING_AVERAGE, &val); - running_avg_capture = (val >> 4) & 0x3fffff; - running_avg_capture = sign_extend32(running_avg_capture, 21); + + /* + * On Carrizo and later platforms, TdpRunAvgAccCap bit field + * is extended to 4:31 from 4:25. + */ + if (boot_cpu_data.x86 == 0x15 && boot_cpu_data.x86_model >= 0x60) { + running_avg_capture = val >> 4; + running_avg_capture = sign_extend32(running_avg_capture, 27); + } else { + running_avg_capture = (val >> 4) & 0x3fffff; + running_avg_capture = sign_extend32(running_avg_capture, 21); + } + running_avg_range = (val & 0xf) + 1; pci_bus_read_config_dword(f4->bus, PCI_DEVFN(PCI_SLOT(f4->devfn), 5), @@ -93,31 +115,38 @@ static ssize_t show_power_crit(struct device *dev, } static DEVICE_ATTR(power1_crit, S_IRUGO, show_power_crit, NULL); -static umode_t fam15h_power_is_visible(struct kobject *kobj, - struct attribute *attr, - int index) +static int fam15h_power_init_attrs(struct pci_dev *pdev, + struct fam15h_power_data *data) { - /* power1_input is only reported for Fam15h, Models 00h-0fh */ - if (attr == &dev_attr_power1_input.attr && - (boot_cpu_data.x86 != 0x15 || boot_cpu_data.x86_model > 0xf)) - return 0; + int n = FAM15H_MIN_NUM_ATTRS; + struct attribute **fam15h_power_attrs; + struct cpuinfo_x86 *c = &boot_cpu_data; - return attr->mode; -} + if (c->x86 == 0x15 && + (c->x86_model <= 0xf || + (c->x86_model >= 0x60 && c->x86_model <= 0x6f))) + n += 1; -static struct attribute *fam15h_power_attrs[] = { - &dev_attr_power1_input.attr, - &dev_attr_power1_crit.attr, - NULL -}; + fam15h_power_attrs = devm_kcalloc(&pdev->dev, n, + sizeof(*fam15h_power_attrs), + GFP_KERNEL); -static const struct attribute_group fam15h_power_group = { - .attrs = fam15h_power_attrs, - .is_visible = fam15h_power_is_visible, -}; -__ATTRIBUTE_GROUPS(fam15h_power); + if (!fam15h_power_attrs) + return -ENOMEM; + + n = 0; + fam15h_power_attrs[n++] = &dev_attr_power1_crit.attr; + if (c->x86 == 0x15 && + (c->x86_model <= 0xf || + (c->x86_model >= 0x60 && c->x86_model <= 0x6f))) + fam15h_power_attrs[n++] = &dev_attr_power1_input.attr; + + data->group.attrs = fam15h_power_attrs; + + return 0; +} -static bool fam15h_power_is_internal_node0(struct pci_dev *f4) +static bool should_load_on_this_node(struct pci_dev *f4) { u32 val; @@ -174,11 +203,12 @@ static int fam15h_power_resume(struct pci_dev *pdev) #define fam15h_power_resume NULL #endif -static void fam15h_power_init_data(struct pci_dev *f4, - struct fam15h_power_data *data) +static int fam15h_power_init_data(struct pci_dev *f4, + struct fam15h_power_data *data) { - u32 val; + u32 val, eax, ebx, ecx, edx; u64 tmp; + int ret; pci_read_config_dword(f4, REG_PROCESSOR_TDP, &val); data->base_tdp = val >> 16; @@ -198,14 +228,41 @@ static void fam15h_power_init_data(struct pci_dev *f4, /* convert to microWatt */ data->processor_pwr_watts = (tmp * 15625) >> 10; + + ret = fam15h_power_init_attrs(f4, data); + if (ret) + return ret; + + cpuid(0x80000007, &eax, &ebx, &ecx, &edx); + + /* CPUID Fn8000_0007:EDX[12] indicates to support accumulated power */ + if (!(edx & BIT(12))) + return 0; + + /* + * determine the ratio of the compute unit power accumulator + * sample period to the PTSC counter period by executing CPUID + * Fn8000_0007:ECX + */ + data->cpu_pwr_sample_ratio = ecx; + + if (rdmsrl_safe(MSR_F15H_CU_MAX_PWR_ACCUMULATOR, &tmp)) { + pr_err("Failed to read max compute unit power accumulator MSR\n"); + return -ENODEV; + } + + data->max_cu_acc_power = tmp; + + return 0; } static int fam15h_power_probe(struct pci_dev *pdev, - const struct pci_device_id *id) + const struct pci_device_id *id) { struct fam15h_power_data *data; struct device *dev = &pdev->dev; struct device *hwmon_dev; + int ret; /* * though we ignore every other northbridge, we still have to @@ -214,25 +271,31 @@ static int fam15h_power_probe(struct pci_dev *pdev, */ tweak_runavg_range(pdev); - if (!fam15h_power_is_internal_node0(pdev)) + if (!should_load_on_this_node(pdev)) return -ENODEV; data = devm_kzalloc(dev, sizeof(struct fam15h_power_data), GFP_KERNEL); if (!data) return -ENOMEM; - fam15h_power_init_data(pdev, data); + ret = fam15h_power_init_data(pdev, data); + if (ret) + return ret; + data->pdev = pdev; + data->groups[0] = &data->group; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, "fam15h_power", data, - fam15h_power_groups); + &data->groups[0]); return PTR_ERR_OR_ZERO(hwmon_dev); } static const struct pci_device_id fam15h_power_id_table[] = { { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) }, { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M30H_NB_F4) }, + { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M60H_NB_F4) }, { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_NB_F4) }, { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F4) }, {} -- cgit 1.2.3-korg