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Commit 9b9f2f54 authored by Vadim Pasternak's avatar Vadim Pasternak Committed by Andy Shevchenko
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platform/x86: mlx-platform: Add mlx-wdt platform driver activation 

Add mlx-wdt platform driver activation. Watchdog driver uses the same
regmap infrastructure as others Mellanox platform drivers. Specific
registers description for watchdog platform data configuration are
added to mlx-platform. There are the registers for watchdog timer
manipulation, and action setting on watchdog timer expiration.
The watchdog action function could be configured to perform one of the
following: system reset, setting PWM to full speed or counter
increment.
Two types of watchdog devices are supported main and auxiliary.
These devices are co-exist and each of them could be configured to
handle the specific action.
Signed-off-by: default avatarMichael Shych <michealsh@mellanox.com>
Signed-off-by: default avatarVadim Pasternak <vadimp@mellanox.com>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 584814af
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Showing with 219 additions and 2 deletions
drivers/platform/x86/mlx-platform.c
View file @ 9b9f2f54
......@@ -56,6 +56,16 @@
#define MLXPLAT_CPLD_LPC_REG_FAN_OFFSET 0x88
#define MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET 0x89
#define MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET 0x8a
#define MLXPLAT_CPLD_LPC_REG_WD_CLEAR_OFFSET 0xc7
#define MLXPLAT_CPLD_LPC_REG_WD_CLEAR_WP_OFFSET 0xc8
#define MLXPLAT_CPLD_LPC_REG_WD1_TMR_OFFSET 0xc9
#define MLXPLAT_CPLD_LPC_REG_WD1_ACT_OFFSET 0xcb
#define MLXPLAT_CPLD_LPC_REG_WD2_TMR_OFFSET 0xcd
#define MLXPLAT_CPLD_LPC_REG_WD2_TLEFT_OFFSET 0xce
#define MLXPLAT_CPLD_LPC_REG_WD2_ACT_OFFSET 0xcf
#define MLXPLAT_CPLD_LPC_REG_WD3_TMR_OFFSET 0xd1
#define MLXPLAT_CPLD_LPC_REG_WD3_TLEFT_OFFSET 0xd2
#define MLXPLAT_CPLD_LPC_REG_WD3_ACT_OFFSET 0xd3
#define MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET 0xe3
#define MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET 0xe4
#define MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET 0xe5
......@@ -129,6 +139,18 @@
#define MLXPLAT_CPLD_FAN3_DEFAULT_NR 13
#define MLXPLAT_CPLD_FAN4_DEFAULT_NR 14
/* Masks and default values for watchdogs */
#define MLXPLAT_CPLD_WD1_CLEAR_MASK GENMASK(7, 1)
#define MLXPLAT_CPLD_WD2_CLEAR_MASK (GENMASK(7, 0) & ~BIT(1))
#define MLXPLAT_CPLD_WD_TYPE1_TO_MASK GENMASK(7, 4)
#define MLXPLAT_CPLD_WD_TYPE2_TO_MASK 0
#define MLXPLAT_CPLD_WD_RESET_ACT_MASK GENMASK(7, 1)
#define MLXPLAT_CPLD_WD_FAN_ACT_MASK (GENMASK(7, 0) & ~BIT(4))
#define MLXPLAT_CPLD_WD_COUNT_ACT_MASK (GENMASK(7, 0) & ~BIT(7))
#define MLXPLAT_CPLD_WD_DFLT_TIMEOUT 30
#define MLXPLAT_CPLD_WD_MAX_DEVS 2
/* mlxplat_priv - platform private data
* @pdev_i2c - i2c controller platform device
* @pdev_mux - array of mux platform devices
......@@ -136,6 +158,7 @@
* @pdev_led - led platform devices
* @pdev_io_regs - register access platform devices
* @pdev_fan - FAN platform devices
* @pdev_wd - array of watchdog platform devices
*/
struct mlxplat_priv {
struct platform_device *pdev_i2c;
......@@ -144,6 +167,7 @@ struct mlxplat_priv {
struct platform_device *pdev_led;
struct platform_device *pdev_io_regs;
struct platform_device *pdev_fan;
struct platform_device *pdev_wd[MLXPLAT_CPLD_WD_MAX_DEVS];
};
/* Regions for LPC I2C controller and LPC base register space */
......@@ -1351,6 +1375,148 @@ static struct mlxreg_core_platform_data mlxplat_default_fan_data = {
.counter = ARRAY_SIZE(mlxplat_mlxcpld_default_fan_data),
};
/* Watchdog type1: hardware implementation version1
* (MSN2700, MSN2410, MSN2740, MSN2100 and MSN2140 systems).
*/
static struct mlxreg_core_data mlxplat_mlxcpld_wd_main_regs_type1[] = {
{
.label = "action",
.reg = MLXPLAT_CPLD_LPC_REG_WD1_ACT_OFFSET,
.mask = MLXPLAT_CPLD_WD_RESET_ACT_MASK,
.bit = 0,
},
{
.label = "timeout",
.reg = MLXPLAT_CPLD_LPC_REG_WD1_TMR_OFFSET,
.mask = MLXPLAT_CPLD_WD_TYPE1_TO_MASK,
.health_cntr = MLXPLAT_CPLD_WD_DFLT_TIMEOUT,
},
{
.label = "ping",
.reg = MLXPLAT_CPLD_LPC_REG_WD_CLEAR_OFFSET,
.mask = MLXPLAT_CPLD_WD1_CLEAR_MASK,
.bit = 0,
},
{
.label = "reset",
.reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
.mask = GENMASK(7, 0) & ~BIT(6),
.bit = 6,
},
};
static struct mlxreg_core_data mlxplat_mlxcpld_wd_aux_regs_type1[] = {
{
.label = "action",
.reg = MLXPLAT_CPLD_LPC_REG_WD2_ACT_OFFSET,
.mask = MLXPLAT_CPLD_WD_FAN_ACT_MASK,
.bit = 4,
},
{
.label = "timeout",
.reg = MLXPLAT_CPLD_LPC_REG_WD2_TMR_OFFSET,
.mask = MLXPLAT_CPLD_WD_TYPE1_TO_MASK,
.health_cntr = MLXPLAT_CPLD_WD_DFLT_TIMEOUT,
},
{
.label = "ping",
.reg = MLXPLAT_CPLD_LPC_REG_WD_CLEAR_OFFSET,
.mask = MLXPLAT_CPLD_WD1_CLEAR_MASK,
.bit = 1,
},
};
static struct mlxreg_core_platform_data mlxplat_mlxcpld_wd_set_type1[] = {
{
.data = mlxplat_mlxcpld_wd_main_regs_type1,
.counter = ARRAY_SIZE(mlxplat_mlxcpld_wd_main_regs_type1),
.version = MLX_WDT_TYPE1,
.identity = "mlx-wdt-main",
},
{
.data = mlxplat_mlxcpld_wd_aux_regs_type1,
.counter = ARRAY_SIZE(mlxplat_mlxcpld_wd_aux_regs_type1),
.version = MLX_WDT_TYPE1,
.identity = "mlx-wdt-aux",
},
};
/* Watchdog type2: hardware implementation version 2
* (all systems except (MSN2700, MSN2410, MSN2740, MSN2100 and MSN2140).
*/
static struct mlxreg_core_data mlxplat_mlxcpld_wd_main_regs_type2[] = {
{
.label = "action",
.reg = MLXPLAT_CPLD_LPC_REG_WD2_ACT_OFFSET,
.mask = MLXPLAT_CPLD_WD_RESET_ACT_MASK,
.bit = 0,
},
{
.label = "timeout",
.reg = MLXPLAT_CPLD_LPC_REG_WD2_TMR_OFFSET,
.mask = MLXPLAT_CPLD_WD_TYPE2_TO_MASK,
.health_cntr = MLXPLAT_CPLD_WD_DFLT_TIMEOUT,
},
{
.label = "timeleft",
.reg = MLXPLAT_CPLD_LPC_REG_WD2_TLEFT_OFFSET,
.mask = MLXPLAT_CPLD_WD_TYPE2_TO_MASK,
},
{
.label = "ping",
.reg = MLXPLAT_CPLD_LPC_REG_WD2_ACT_OFFSET,
.mask = MLXPLAT_CPLD_WD_RESET_ACT_MASK,
.bit = 0,
},
{
.label = "reset",
.reg = MLXPLAT_CPLD_LPC_REG_RESET_CAUSE_OFFSET,
.mask = GENMASK(7, 0) & ~BIT(6),
.bit = 6,
},
};
static struct mlxreg_core_data mlxplat_mlxcpld_wd_aux_regs_type2[] = {
{
.label = "action",
.reg = MLXPLAT_CPLD_LPC_REG_WD3_ACT_OFFSET,
.mask = MLXPLAT_CPLD_WD_FAN_ACT_MASK,
.bit = 4,
},
{
.label = "timeout",
.reg = MLXPLAT_CPLD_LPC_REG_WD3_TMR_OFFSET,
.mask = MLXPLAT_CPLD_WD_TYPE2_TO_MASK,
.health_cntr = MLXPLAT_CPLD_WD_DFLT_TIMEOUT,
},
{
.label = "timeleft",
.reg = MLXPLAT_CPLD_LPC_REG_WD3_TLEFT_OFFSET,
.mask = MLXPLAT_CPLD_WD_TYPE2_TO_MASK,
},
{
.label = "ping",
.reg = MLXPLAT_CPLD_LPC_REG_WD3_ACT_OFFSET,
.mask = MLXPLAT_CPLD_WD_FAN_ACT_MASK,
.bit = 4,
},
};
static struct mlxreg_core_platform_data mlxplat_mlxcpld_wd_set_type2[] = {
{
.data = mlxplat_mlxcpld_wd_main_regs_type2,
.counter = ARRAY_SIZE(mlxplat_mlxcpld_wd_main_regs_type2),
.version = MLX_WDT_TYPE2,
.identity = "mlx-wdt-main",
},
{
.data = mlxplat_mlxcpld_wd_aux_regs_type2,
.counter = ARRAY_SIZE(mlxplat_mlxcpld_wd_aux_regs_type2),
.version = MLX_WDT_TYPE2,
.identity = "mlx-wdt-aux",
},
};
static bool mlxplat_mlxcpld_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
......@@ -1373,6 +1539,14 @@ static bool mlxplat_mlxcpld_writeable_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_REG_PWR_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD_CLEAR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD_CLEAR_WP_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD1_TMR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD1_ACT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD2_TMR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD2_ACT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD3_TMR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD3_ACT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PWM_CONTROL_OFFSET:
return true;
......@@ -1416,6 +1590,16 @@ static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_REG_FAN_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD_CLEAR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD_CLEAR_WP_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD1_TMR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD1_ACT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD2_TMR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD2_TLEFT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD2_ACT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD3_TMR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD3_TLEFT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD3_ACT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET:
......@@ -1473,6 +1657,10 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
case MLXPLAT_CPLD_LPC_REG_FAN_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD2_TMR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD2_TLEFT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD3_TMR_OFFSET:
case MLXPLAT_CPLD_LPC_REG_WD3_TLEFT_OFFSET:
case MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET:
case MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET:
......@@ -1500,6 +1688,7 @@ static const struct reg_default mlxplat_mlxcpld_regmap_default[] = {
{ MLXPLAT_CPLD_LPC_REG_WP1_OFFSET, 0x00 },
{ MLXPLAT_CPLD_LPC_REG_WP2_OFFSET, 0x00 },
{ MLXPLAT_CPLD_LPC_REG_PWM_CONTROL_OFFSET, 0x00 },
{ MLXPLAT_CPLD_LPC_REG_WD_CLEAR_WP_OFFSET, 0x00 },
};
struct mlxplat_mlxcpld_regmap_context {
......@@ -1549,6 +1738,8 @@ static struct mlxreg_core_hotplug_platform_data *mlxplat_hotplug;
static struct mlxreg_core_platform_data *mlxplat_led;
static struct mlxreg_core_platform_data *mlxplat_regs_io;
static struct mlxreg_core_platform_data *mlxplat_fan;
static struct mlxreg_core_platform_data
*mlxplat_wd_data[MLXPLAT_CPLD_WD_MAX_DEVS];
static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)
{
......@@ -1564,6 +1755,7 @@ static int __init mlxplat_dmi_default_matched(const struct dmi_system_id *dmi)
mlxplat_default_channels[i - 1][MLXPLAT_CPLD_GRP_CHNL_NUM - 1];
mlxplat_led = &mlxplat_default_led_data;
mlxplat_regs_io = &mlxplat_default_regs_io_data;
mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0];
return 1;
};
......@@ -1582,6 +1774,7 @@ static int __init mlxplat_dmi_msn21xx_matched(const struct dmi_system_id *dmi)
mlxplat_msn21xx_channels[MLXPLAT_CPLD_GRP_CHNL_NUM - 1];
mlxplat_led = &mlxplat_msn21xx_led_data;
mlxplat_regs_io = &mlxplat_msn21xx_regs_io_data;
mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0];
return 1;
};
......@@ -1600,6 +1793,7 @@ static int __init mlxplat_dmi_msn274x_matched(const struct dmi_system_id *dmi)
mlxplat_msn21xx_channels[MLXPLAT_CPLD_GRP_CHNL_NUM - 1];
mlxplat_led = &mlxplat_default_led_data;
mlxplat_regs_io = &mlxplat_msn21xx_regs_io_data;
mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0];
return 1;
};
......@@ -1618,6 +1812,7 @@ static int __init mlxplat_dmi_msn201x_matched(const struct dmi_system_id *dmi)
mlxplat_default_channels[i - 1][MLXPLAT_CPLD_GRP_CHNL_NUM - 1];
mlxplat_led = &mlxplat_msn21xx_led_data;
mlxplat_regs_io = &mlxplat_msn21xx_regs_io_data;
mlxplat_wd_data[0] = &mlxplat_mlxcpld_wd_set_type1[0];
return 1;
};
......@@ -1637,6 +1832,8 @@ static int __init mlxplat_dmi_qmb7xx_matched(const struct dmi_system_id *dmi)
mlxplat_led = &mlxplat_default_ng_led_data;
mlxplat_regs_io = &mlxplat_default_ng_regs_io_data;
mlxplat_fan = &mlxplat_default_fan_data;
for (i = 0; i < ARRAY_SIZE(mlxplat_mlxcpld_wd_set_type2); i++)
mlxplat_wd_data[i] = &mlxplat_mlxcpld_wd_set_type2[i];
return 1;
};
......@@ -1919,15 +2116,33 @@ static int __init mlxplat_init(void)
}
}
/* Add WD drivers. */
for (j = 0; j < MLXPLAT_CPLD_WD_MAX_DEVS; j++) {
if (mlxplat_wd_data[j]) {
mlxplat_wd_data[j]->regmap = mlxplat_hotplug->regmap;
priv->pdev_wd[j] = platform_device_register_resndata(
&mlxplat_dev->dev, "mlx-wdt",
j, NULL, 0,
mlxplat_wd_data[j],
sizeof(*mlxplat_wd_data[j]));
if (IS_ERR(priv->pdev_wd[j])) {
err = PTR_ERR(priv->pdev_wd[j]);
goto fail_platform_wd_register;
}
}
}
/* Sync registers with hardware. */
regcache_mark_dirty(mlxplat_hotplug->regmap);
err = regcache_sync(mlxplat_hotplug->regmap);
if (err)
goto fail_platform_fan_register;
goto fail_platform_wd_register;
return 0;
fail_platform_fan_register:
fail_platform_wd_register:
while (--j >= 0)
platform_device_unregister(priv->pdev_wd[j]);
if (mlxplat_fan)
platform_device_unregister(priv->pdev_fan);
fail_platform_io_regs_register:
......@@ -1953,6 +2168,8 @@ static void __exit mlxplat_exit(void)
struct mlxplat_priv *priv = platform_get_drvdata(mlxplat_dev);
int i;
for (i = MLXPLAT_CPLD_WD_MAX_DEVS - 1; i >= 0 ; i--)
platform_device_unregister(priv->pdev_wd[i]);
if (priv->pdev_fan)
platform_device_unregister(priv->pdev_fan);
if (priv->pdev_io_regs)
......
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