diff options
| -rw-r--r-- | drivers/hwmon/k10temp.c | 80 |
1 files changed, 79 insertions, 1 deletions
diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c index c45f6498a59b..0af096b061fa 100644 --- a/drivers/hwmon/k10temp.c +++ b/drivers/hwmon/k10temp.c @@ -5,6 +5,12 @@ * * Copyright (c) 2009 Clemens Ladisch <clemens@ladisch.de> * Copyright (c) 2020 Guenter Roeck <linux@roeck-us.net> + * + * Implementation notes: + * - CCD1 and CCD2 register address information as well as the calculation to + * convert raw register values is from https://github.com/ocerman/zenpower. + * The information is not confirmed from chip datasheets, but experiments + * suggest that it provides reasonable temperature values. */ #include <linux/bitops.h> @@ -61,6 +67,8 @@ static DEFINE_MUTEX(nb_smu_ind_mutex); /* F17h M01h Access througn SMN */ #define F17H_M01H_REPORTED_TEMP_CTRL_OFFSET 0x00059800 +#define F17H_M70H_CCD1_TEMP 0x00059954 +#define F17H_M70H_CCD2_TEMP 0x00059958 #define CUR_TEMP_SHIFT 21 #define CUR_TEMP_RANGE_SEL_MASK BIT(19) @@ -72,6 +80,8 @@ struct k10temp_data { int temp_offset; u32 temp_adjust_mask; bool show_tdie; + bool show_tccd1; + bool show_tccd2; }; struct tctl_offset { @@ -143,6 +153,8 @@ static long get_raw_temp(struct k10temp_data *data) const char *k10temp_temp_label[] = { "Tdie", "Tctl", + "Tccd1", + "Tccd2", }; static int k10temp_read_labels(struct device *dev, @@ -172,6 +184,16 @@ static int k10temp_read(struct device *dev, enum hwmon_sensor_types type, if (*val < 0) *val = 0; break; + case 2: /* Tccd1 */ + amd_smn_read(amd_pci_dev_to_node_id(data->pdev), + F17H_M70H_CCD1_TEMP, ®val); + *val = (regval & 0xfff) * 125 - 305000; + break; + case 3: /* Tccd2 */ + amd_smn_read(amd_pci_dev_to_node_id(data->pdev), + F17H_M70H_CCD2_TEMP, ®val); + *val = (regval & 0xfff) * 125 - 305000; + break; default: return -EOPNOTSUPP; } @@ -206,8 +228,24 @@ static umode_t k10temp_is_visible(const void *_data, case hwmon_temp: switch (attr) { case hwmon_temp_input: - if (channel && !data->show_tdie) + switch (channel) { + case 0: /* Tdie, or Tctl if we don't show it */ + break; + case 1: /* Tctl */ + if (!data->show_tdie) + return 0; + break; + case 2: /* Tccd1 */ + if (!data->show_tccd1) + return 0; + break; + case 3: /* Tccd2 */ + if (!data->show_tccd2) + return 0; + break; + default: return 0; + } break; case hwmon_temp_max: if (channel) @@ -229,8 +267,24 @@ static umode_t k10temp_is_visible(const void *_data, return 0; break; case hwmon_temp_label: + /* No labels if we don't show the die temperature */ if (!data->show_tdie) return 0; + switch (channel) { + case 0: /* Tdie */ + case 1: /* Tctl */ + break; + case 2: /* Tccd1 */ + if (!data->show_tccd1) + return 0; + break; + case 3: /* Tccd2 */ + if (!data->show_tccd2) + return 0; + break; + default: + return 0; + } break; default: return 0; @@ -281,6 +335,8 @@ static const struct hwmon_channel_info *k10temp_info[] = { HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, HWMON_T_INPUT | HWMON_T_LABEL), NULL }; @@ -326,9 +382,31 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id) data->read_htcreg = read_htcreg_nb_f15; data->read_tempreg = read_tempreg_nb_f15; } else if (boot_cpu_data.x86 == 0x17 || boot_cpu_data.x86 == 0x18) { + u32 regval; + data->temp_adjust_mask = CUR_TEMP_RANGE_SEL_MASK; data->read_tempreg = read_tempreg_nb_f17; data->show_tdie = true; + + switch (boot_cpu_data.x86_model) { + case 0x1: /* Zen */ + case 0x8: /* Zen+ */ + case 0x11: /* Zen APU */ + case 0x18: /* Zen+ APU */ + break; + case 0x31: /* Zen2 Threadripper */ + case 0x71: /* Zen2 */ + amd_smn_read(amd_pci_dev_to_node_id(pdev), + F17H_M70H_CCD1_TEMP, ®val); + if (regval & 0xfff) + data->show_tccd1 = true; + + amd_smn_read(amd_pci_dev_to_node_id(pdev), + F17H_M70H_CCD2_TEMP, ®val); + if (regval & 0xfff) + data->show_tccd2 = true; + break; + } } else { data->read_htcreg = read_htcreg_pci; data->read_tempreg = read_tempreg_pci; |