From: Guenter Roeck Date: Wed, 12 Apr 2017 13:15:24 +0000 (-0700) Subject: Various improvements X-Git-Tag: v1.0~36 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=57d4d8b8fae351e9d3b4965605055d917430e325;p=groeck-it87 Various improvements - Acquire acpi mutex (not supported in upstream kernel) - Try to handle 0x4e access failures on Gigabyte boards - Improve temperature register / limit / type support for recent chips Signed-off-by: Guenter Roeck --- diff --git a/it87.c b/it87.c index 69d3761..31c8ca9 100644 --- a/it87.c +++ b/it87.c @@ -75,6 +75,9 @@ #define DRVNAME "it87" +/* Necessary API not (yet) exported in upstream kernel */ +/* #define __IT87_USE_ACPI_MUTEX */ + enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732, it8771, it8772, it8781, it8782, it8783, it8786, it8790, it8792, it8603, it8607, it8620, it8622, it8628, it8655, it8665, @@ -85,6 +88,11 @@ module_param(force_id, ushort, 0); MODULE_PARM_DESC(force_id, "Override the detected device ID"); static struct platform_device *it87_pdev[2]; +static bool it87_sio4e_broken; +#ifdef __IT87_USE_ACPI_MUTEX +static acpi_handle it87_acpi_sio_handle; +static char *it87_acpi_sio_mutex; +#endif #define REG_2E 0x2e /* The register to read/write */ #define REG_4E 0x4e /* Secondary register to read/write */ @@ -98,10 +106,28 @@ static struct platform_device *it87_pdev[2]; #define DEVID 0x20 /* Register: Device ID */ #define DEVREV 0x22 /* Register: Device Revision */ +static inline void __superio_enter(int ioreg) +{ + outb(0x87, ioreg); + outb(0x01, ioreg); + outb(0x55, ioreg); + outb(ioreg == REG_4E ? 0xaa : 0x55, ioreg); +} + static inline int superio_inb(int ioreg, int reg) { + int val; + outb(reg, ioreg); - return inb(ioreg + 1); + val = inb(ioreg + 1); + if (it87_sio4e_broken && ioreg == 0x4e && val == 0xff) { + __superio_enter(ioreg); + outb(reg, ioreg); + val = inb(ioreg + 1); + pr_warn("Retry access 0x4e:0x%x -> 0x%x\n", reg, val); + } + + return val; } static inline void superio_outb(int ioreg, int reg, int val) @@ -112,13 +138,7 @@ static inline void superio_outb(int ioreg, int reg, int val) static int superio_inw(int ioreg, int reg) { - int val; - - outb(reg++, ioreg); - val = inb(ioreg + 1) << 8; - outb(reg, ioreg); - val |= inb(ioreg + 1); - return val; + return (superio_inb(ioreg, reg) << 8) | superio_inb(ioreg, reg + 1); } static inline void superio_select(int ioreg, int ldn) @@ -129,24 +149,45 @@ static inline void superio_select(int ioreg, int ldn) static inline int superio_enter(int ioreg) { +#ifdef __IT87_USE_ACPI_MUTEX + if (it87_acpi_sio_mutex) { + acpi_status status; + + status = acpi_acquire_mutex(NULL, it87_acpi_sio_mutex, 0x10); + if (ACPI_FAILURE(status)) { + pr_err("Failed to acquire ACPI mutex\n"); + return -EBUSY; + } + } +#endif /* * Try to reserve ioreg and ioreg + 1 for exclusive access. */ if (!request_muxed_region(ioreg, 2, DRVNAME)) - return -EBUSY; + goto error; - outb(0x87, ioreg); - outb(0x01, ioreg); - outb(0x55, ioreg); - outb(ioreg == REG_4E ? 0xaa : 0x55, ioreg); + __superio_enter(ioreg); return 0; + +error: +#ifdef __IT87_USE_ACPI_MUTEX + if (it87_acpi_sio_mutex) + acpi_release_mutex(it87_acpi_sio_handle, NULL); +#endif + return -EBUSY; } static inline void superio_exit(int ioreg) { - outb(0x02, ioreg); - outb(0x02, ioreg + 1); + if (!it87_sio4e_broken || ioreg != 0x4e) { + outb(0x02, ioreg); + outb(0x02, ioreg + 1); + } release_region(ioreg, 2); +#ifdef __IT87_USE_ACPI_MUTEX + if (it87_acpi_sio_mutex) + acpi_release_mutex(it87_acpi_sio_handle, NULL); +#endif } /* Logical device 4 registers */ @@ -258,6 +299,8 @@ static const u8 IT87_REG_FANX_MIN_8665[] = static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59, 0x5a, 0x91, 0x90 }; +static const u8 IT87_REG_TEMP_OFFSET_8686[] = { 0x56, 0x57, 0x59, 0x92, 0x91, 0x90 }; + #define IT87_REG_FAN_MAIN_CTRL 0x13 #define IT87_REG_FAN_CTL 0x14 @@ -277,6 +320,11 @@ static const u8 IT87_REG_VIN[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, static const u8 IT87_REG_TEMP_HIGH[] = { 0x40, 0x42, 0x44, 0x46, 0xb4, 0xb6 }; static const u8 IT87_REG_TEMP_LOW[] = { 0x41, 0x43, 0x45, 0x47, 0xb5, 0xb7 }; +static const u8 IT87_REG_TEMP_HIGH_8686[] = + { 0x40, 0x42, 0x44, 0xb4, 0xb6, 0xb8 }; +static const u8 IT87_REG_TEMP_LOW_8686[] = + { 0x41, 0x43, 0x45, 0xb5, 0xb7, 0xb9 }; + #define IT87_REG_VIN_ENABLE 0x50 #define IT87_REG_TEMP_ENABLE 0x51 #define IT87_REG_TEMP_EXTRA 0x55 @@ -291,6 +339,9 @@ static const u8 IT87_REG_AUTO_BASE[] = { 0x60, 0x68, 0x70, 0x78, 0xa0, 0xa8 }; #define IT87_REG_TEMP456_ENABLE 0x77 +static const u16 IT87_REG_TEMP_SRC1[] = { 0x21d, 0x21e, 0x21f }; +#define IT87_REG_TEMP_SRC2 0x23d + #define NUM_VIN ARRAY_SIZE(IT87_REG_VIN) #define NUM_VIN_LIMIT 8 #define NUM_TEMP 6 @@ -636,6 +687,10 @@ struct it87_data { const u8 *REG_PWM; + const u8 *REG_TEMP_OFFSET; + const u8 *REG_TEMP_LOW; + const u8 *REG_TEMP_HIGH; + unsigned short addr; const char *name; struct mutex update_lock; @@ -941,12 +996,12 @@ static struct it87_data *it87_update_device(struct device *dev) if (has_temp_offset(data)) data->temp[i][3] = it87_read_value(data, - IT87_REG_TEMP_OFFSET[i]); + data->REG_TEMP_OFFSET[i]); data->temp[i][1] = - it87_read_value(data, IT87_REG_TEMP_LOW[i]); + it87_read_value(data, data->REG_TEMP_LOW[i]); data->temp[i][2] = - it87_read_value(data, IT87_REG_TEMP_HIGH[i]); + it87_read_value(data, data->REG_TEMP_HIGH[i]); } /* Newer chips don't have clock dividers */ @@ -1113,10 +1168,10 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *attr, switch (index) { default: case 1: - reg = IT87_REG_TEMP_LOW[nr]; + reg = data->REG_TEMP_LOW[nr]; break; case 2: - reg = IT87_REG_TEMP_HIGH[nr]; + reg = data->REG_TEMP_HIGH[nr]; break; case 3: regval = it87_read_value(data, IT87_REG_BEEP_ENABLE); @@ -1125,7 +1180,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *attr, it87_write_value(data, IT87_REG_BEEP_ENABLE, regval); } data->valid = 0; - reg = IT87_REG_TEMP_OFFSET[nr]; + reg = data->REG_TEMP_OFFSET[nr]; break; } @@ -1178,23 +1233,87 @@ static SENSOR_DEVICE_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, set_temp, static SENSOR_DEVICE_ATTR_2(temp6_offset, S_IRUGO | S_IWUSR, show_temp, set_temp, 5, 3); +static int get_temp_type(struct it87_data *data, int index) +{ + u8 reg, extra; + int type = 0; + + if (has_bank_sel(data)) { + int s1reg = IT87_REG_TEMP_SRC1[index/2] >> ((index % 2) * 4); + u8 src1, src2; + + src1 = (it87_read_value(data, s1reg) >> ((index % 2) * 4)) & 0x0f; + src2 = it87_read_value(data, IT87_REG_TEMP_SRC2); + + switch (data->type) { + case it8686: + switch (src1) { + case 0: + if (index >= 3) + return 4; + break; + case 1: + if (index == 1 || index == 2 || + index == 4 || index == 5) + return 6; + break; + case 2: + if (index == 2 || index == 6) + return 5; + break; + default: + break; + } + break; + case it8655: + case it8665: + if (src1 < 3) { + index = src1; + break; + } + switch(src1) { + case 3: + type = (src2 & BIT(index)) ? 6 : 5; + break; + case 4 ... 8: + type = (src2 & BIT(index)) ? 4 : 6; + break; + case 9: + type = (src2 & BIT(index)) ? 5 : 0; + break; + default: + break; + } + return type; + default: + return 0; + } + } + if (index >= 3) + return 0; + + reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); + extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); + + if ((has_temp_peci(data, index) && (reg >> 6 == index + 1)) || + (has_temp_old_peci(data, index) && (extra & 0x80))) + type = 6; /* Intel PECI */ + if (reg & BIT(index)) + type = 3; /* thermal diode */ + else if (reg & BIT(index + 3)) + type = 4; /* thermistor */ + + return type; +} + static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr, char *buf) { struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); - int nr = sensor_attr->index; struct it87_data *data = it87_update_device(dev); - u8 reg = data->sensor; /* In case value is updated while used */ - u8 extra = data->extra; + int type = get_temp_type(data, sensor_attr->index); - if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) || - (has_temp_old_peci(data, nr) && (extra & 0x80))) - return sprintf(buf, "6\n"); /* Intel PECI */ - if (reg & (1 << nr)) - return sprintf(buf, "3\n"); /* thermal diode */ - if (reg & (8 << nr)) - return sprintf(buf, "4\n"); /* thermistor */ - return sprintf(buf, "0\n"); /* disabled */ + return sprintf(buf, "%d\n", type); } static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr, @@ -2251,6 +2370,16 @@ static umode_t it87_temp_is_visible(struct kobject *kobj, if (a && i >= data->num_temp_limit) return 0; + if (a == 3) { + int type = get_temp_type(data, i); + + if (type == 0) + return 0; + if (has_bank_sel(data)) + return 0444; + return attr->mode; + } + if (a == 5 && !has_temp_offset(data)) return 0; @@ -2264,7 +2393,7 @@ static struct attribute *it87_attributes_temp[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp1_min.dev_attr.attr, - &sensor_dev_attr_temp1_type.dev_attr.attr, + &sensor_dev_attr_temp1_type.dev_attr.attr, /* 3 */ &sensor_dev_attr_temp1_alarm.dev_attr.attr, &sensor_dev_attr_temp1_offset.dev_attr.attr, /* 5 */ &sensor_dev_attr_temp1_beep.dev_attr.attr, /* 6 */ @@ -2292,6 +2421,7 @@ static struct attribute *it87_attributes_temp[] = { &sensor_dev_attr_temp4_alarm.dev_attr.attr, &sensor_dev_attr_temp4_offset.dev_attr.attr, &sensor_dev_attr_temp4_beep.dev_attr.attr, + &sensor_dev_attr_temp5_input.dev_attr.attr, &sensor_dev_attr_temp5_max.dev_attr.attr, &sensor_dev_attr_temp5_min.dev_attr.attr, @@ -2299,6 +2429,7 @@ static struct attribute *it87_attributes_temp[] = { &sensor_dev_attr_temp5_alarm.dev_attr.attr, &sensor_dev_attr_temp5_offset.dev_attr.attr, &sensor_dev_attr_temp5_beep.dev_attr.attr, + &sensor_dev_attr_temp6_input.dev_attr.attr, &sensor_dev_attr_temp6_max.dev_attr.attr, &sensor_dev_attr_temp6_min.dev_attr.attr, @@ -2580,7 +2711,6 @@ static int __init it87_find(int sioaddr, unsigned short *address, { int err; u16 chip_type; - const char *board_vendor, *board_name; const struct it87_devices *config; err = superio_enter(sioaddr); @@ -3110,25 +3240,6 @@ static int __init it87_find(int sioaddr, unsigned short *address, if (sio_data->beep_pin) pr_info("Beeping is supported\n"); - /* Disable specific features based on DMI strings */ - board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); - board_name = dmi_get_system_info(DMI_BOARD_NAME); - if (board_vendor && board_name) { - if (strcmp(board_vendor, "nVIDIA") == 0 && - strcmp(board_name, "FN68PT") == 0) { - /* - * On the Shuttle SN68PT, FAN_CTL2 is apparently not - * connected to a fan, but to something else. One user - * has reported instant system power-off when changing - * the PWM2 duty cycle, so we disable it. - * I use the board name string as the trigger in case - * the same board is ever used in other systems. - */ - pr_info("Disabling pwm2 due to hardware constraints\n"); - sio_data->skip_pwm = BIT(1); - } - } - exit: superio_exit(sioaddr); return err; @@ -3144,6 +3255,16 @@ static void it87_init_device(struct platform_device *pdev) /* Initialize chip specific register pointers */ switch (data->type) { + case it8686: + data->REG_FAN = IT87_REG_FAN; + data->REG_FANX = IT87_REG_FANX; + data->REG_FAN_MIN = IT87_REG_FAN_MIN; + data->REG_FANX_MIN = IT87_REG_FANX_MIN; + data->REG_PWM = IT87_REG_PWM; + data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET_8686; + data->REG_TEMP_LOW = IT87_REG_TEMP_LOW_8686; + data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH_8686; + break; case it8655: case it8665: data->REG_FAN = IT87_REG_FAN_8665; @@ -3151,6 +3272,9 @@ static void it87_init_device(struct platform_device *pdev) data->REG_FAN_MIN = IT87_REG_FAN_MIN_8665; data->REG_FANX_MIN = IT87_REG_FANX_MIN_8665; data->REG_PWM = IT87_REG_PWM_8665; + data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET; + data->REG_TEMP_LOW = IT87_REG_TEMP_LOW; + data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH; break; case it8622: data->REG_FAN = IT87_REG_FAN; @@ -3158,6 +3282,9 @@ static void it87_init_device(struct platform_device *pdev) data->REG_FAN_MIN = IT87_REG_FAN_MIN; data->REG_FANX_MIN = IT87_REG_FANX_MIN; data->REG_PWM = IT87_REG_PWM_8665; + data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET; + data->REG_TEMP_LOW = IT87_REG_TEMP_LOW; + data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH; break; default: data->REG_FAN = IT87_REG_FAN; @@ -3165,6 +3292,9 @@ static void it87_init_device(struct platform_device *pdev) data->REG_FAN_MIN = IT87_REG_FAN_MIN; data->REG_FANX_MIN = IT87_REG_FANX_MIN; data->REG_PWM = IT87_REG_PWM; + data->REG_TEMP_OFFSET = IT87_REG_TEMP_OFFSET; + data->REG_TEMP_LOW = IT87_REG_TEMP_LOW; + data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH; break; } @@ -3200,9 +3330,9 @@ static void it87_init_device(struct platform_device *pdev) it87_write_value(data, IT87_REG_VIN_MIN(i), 0); } for (i = 0; i < data->num_temp_limit; i++) { - tmp = it87_read_value(data, IT87_REG_TEMP_HIGH[i]); + tmp = it87_read_value(data, data->REG_TEMP_HIGH[i]); if (tmp == 0xff) - it87_write_value(data, IT87_REG_TEMP_HIGH[i], 127); + it87_write_value(data, data->REG_TEMP_HIGH[i], 127); } /* @@ -3546,14 +3676,92 @@ exit_device_put: return err; } +struct it87_dmi_data { + bool sio4e_broken; /* SIO accesses @ 0x4e are broken */ + char *sio_mutex; /* SIO ACPI mutex */ + u8 skip_pwm; /* pwm channels to skip for this board */ +}; + +/* + * On Gigabyte AB350 boards, accesses to the Super-IO chip + * at address 0x4e/0x4f can result in a system hang. + * Accesses to address 0x2e/0x2f need to be mutex protected. + */ +static struct it87_dmi_data gigabyte_ab350_gaming = { + .sio4e_broken = true, + .sio_mutex = "\\_SB.PCI0.SBRG.SIO1.MUT0", +}; + +/* + * On the Shuttle SN68PT, FAN_CTL2 is apparently not + * connected to a fan, but to something else. One user + * has reported instant system power-off when changing + * the PWM2 duty cycle, so we disable it. + * I use the board name string as the trigger in case + * the same board is ever used in other systems. + */ +static struct it87_dmi_data nvidia_fn68pt = { + .skip_pwm = BIT(1), +}; + +static const struct dmi_system_id it87_dmi_table[] __initconst = { + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."), + DMI_MATCH(DMI_BOARD_NAME, "AB350-Gaming-CF"), + }, + .driver_data = &gigabyte_ab350_gaming, + }, + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."), + DMI_MATCH(DMI_BOARD_NAME, "AB350-Gaming 3-CF"), + }, + .driver_data = &gigabyte_ab350_gaming, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "nVIDIA"), + DMI_MATCH(DMI_BOARD_NAME, "FN68PT"), + }, + .driver_data = &nvidia_fn68pt, + }, + { } +}; + static int __init sm_it87_init(void) { + const struct dmi_system_id *dmi = dmi_first_match(it87_dmi_table); + struct it87_dmi_data *dmi_data = NULL; int sioaddr[2] = { REG_2E, REG_4E }; struct it87_sio_data sio_data; unsigned short isa_address; bool found = false; int i, err; + if (dmi) + dmi_data = dmi->driver_data; + + if (dmi_data) { + it87_sio4e_broken = dmi_data->sio4e_broken; +#ifdef __IT87_USE_ACPI_MUTEX + if (dmi_data->sio_mutex) { + static acpi_status status; + + status = acpi_get_handle(NULL, dmi_data->sio_mutex, + &it87_acpi_sio_handle); + if (ACPI_SUCCESS(status)) { + it87_acpi_sio_mutex = dmi_data->sio_mutex; + pr_debug("Found ACPI SIO mutex %s\n", + dmi_data->sio_mutex); + } else { + pr_warn("ACPI SIO mutex %s not found\n", + dmi_data->sio_mutex); + } + } +#endif /* __IT87_USE_ACPI_MUTEX */ + } + err = platform_driver_register(&it87_driver); if (err) return err; @@ -3565,6 +3773,8 @@ static int __init sm_it87_init(void) if (err || isa_address == 0) continue; + if (dmi_data) + sio_data.skip_pwm |= dmi_data->skip_pwm; err = it87_device_add(i, isa_address, &sio_data); if (err) goto exit_dev_unregister;