platform/x86: mlx-platform: Add more definitions for system attributes

Add new attributes for "next-generation" type systems:
- Reset cause indication, when system reset has been caused by the
  platform reset request through CPLD, by AC power failure,
  by software power off request through CPLD. by signal asserted by SOC
  through ACPI register. It introduces more reset causes, which can
  be monitored after the reboots.
- Setting and removing system VPD (EEPROM) hardware write protection.
  It allows to access VPD during production cycle and prevents VPD
  corruption on system in field.
- Voltage regulator devices configuration update status and version. It
  allows to monitor configuration update status and current active
  version for such sort of devices.
- PCIe ASIC reset disable - when set ASIC will go down upon PCIe
  root complex reset, otherwise ASIC will stay up during PCIe root
  complex reset.
- System configuration Ids to provide system static topology
  identification, like system's static I2C topology, number and type of
  FPGA devices within the system and so on.

Add the existing attribute for "iio" bank selection for system type
"msn21xx".

All the above attributes are exposed through "sysfs" by "mlxreg-io"
driver.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index 565a67a65554ce65c649f0d374c58b014e0e9db3..7e92dc52071f8e605f857f0980f522b6b7333ede 100644 (file)
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -35,6 +35,8 @@
 #define MLXPLAT_CPLD_LPC_REG_LED4_OFFSET       0x23
 #define MLXPLAT_CPLD_LPC_REG_LED5_OFFSET       0x24
 #define MLXPLAT_CPLD_LPC_REG_FAN_DIRECTION     0x2a
+#define MLXPLAT_CPLD_LPC_REG_GP0_RO_OFFSET     0x2b
+#define MLXPLAT_CPLD_LPC_REG_GP0_OFFSET                0x2e
 #define MLXPLAT_CPLD_LPC_REG_GP1_OFFSET                0x30
 #define MLXPLAT_CPLD_LPC_REG_WP1_OFFSET                0x31
 #define MLXPLAT_CPLD_LPC_REG_GP2_OFFSET                0x32
@@ -68,6 +70,7 @@
 #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_UFM_VERSION_OFFSET        0xe2
 #define MLXPLAT_CPLD_LPC_REG_PWM1_OFFSET       0xe3
 #define MLXPLAT_CPLD_LPC_REG_TACHO1_OFFSET     0xe4
 #define MLXPLAT_CPLD_LPC_REG_TACHO2_OFFSET     0xe5
@@ -85,6 +88,8 @@
 #define MLXPLAT_CPLD_LPC_REG_FAN_CAP2_OFFSET   0xf6
 #define MLXPLAT_CPLD_LPC_REG_FAN_DRW_CAP_OFFSET        0xf7
 #define MLXPLAT_CPLD_LPC_REG_TACHO_SPEED_OFFSET        0xf8
+#define MLXPLAT_CPLD_LPC_REG_CONFIG1_OFFSET    0xfb
+#define MLXPLAT_CPLD_LPC_REG_CONFIG2_OFFSET    0xfc
 #define MLXPLAT_CPLD_LPC_IO_RANGE              0x100
 #define MLXPLAT_CPLD_LPC_I2C_CH1_OFF           0xdb
 #define MLXPLAT_CPLD_LPC_I2C_CH2_OFF           0xda
@@ -117,6 +122,7 @@
 #define MLXPLAT_CPLD_FAN_NG_MASK       GENMASK(5, 0)
 #define MLXPLAT_CPLD_LED_LO_NIBBLE_MASK        GENMASK(7, 4)
 #define MLXPLAT_CPLD_LED_HI_NIBBLE_MASK        GENMASK(3, 0)
+#define MLXPLAT_CPLD_VOLTREG_UPD_MASK  GENMASK(5, 4)
 
 /* Default I2C parent bus number */
 #define MLXPLAT_CPLD_PHYS_ADAPTER_DEF_NR       1
@@ -1156,6 +1162,12 @@ static struct mlxreg_core_data mlxplat_mlxcpld_msn21xx_regs_io_data[] = {
                .mask = GENMASK(7, 0) & ~BIT(3),
                .mode = 0200,
        },
+       {
+               .label = "select_iio",
+               .reg = MLXPLAT_CPLD_LPC_REG_GP2_OFFSET,
+               .mask = GENMASK(7, 0) & ~BIT(6),
+               .mode = 0644,
+       },
        {
                .label = "asic_health",
                .reg = MLXPLAT_CPLD_LPC_REG_ASIC_HEALTH_OFFSET,
@@ -1244,6 +1256,18 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
                .mask = GENMASK(7, 0) & ~BIT(3),
                .mode = 0444,
        },
+       {
+               .label = "reset_platform",
+               .reg = MLXPLAT_CPLD_LPC_REG_RST_CAUSE1_OFFSET,
+               .mask = GENMASK(7, 0) & ~BIT(4),
+               .mode = 0444,
+       },
+       {
+               .label = "reset_soc",
+               .reg = MLXPLAT_CPLD_LPC_REG_RST_CAUSE1_OFFSET,
+               .mask = GENMASK(7, 0) & ~BIT(5),
+               .mode = 0444,
+       },
        {
                .label = "reset_comex_wd",
                .reg = MLXPLAT_CPLD_LPC_REG_RST_CAUSE1_OFFSET,
@@ -1262,6 +1286,12 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
                .mask = GENMASK(7, 0) & ~BIT(1),
                .mode = 0444,
        },
+       {
+               .label = "reset_sw_pwr_off",
+               .reg = MLXPLAT_CPLD_LPC_REG_RST_CAUSE2_OFFSET,
+               .mask = GENMASK(7, 0) & ~BIT(2),
+               .mode = 0444,
+       },
        {
                .label = "reset_comex_thermal",
                .reg = MLXPLAT_CPLD_LPC_REG_RST_CAUSE2_OFFSET,
@@ -1274,6 +1304,12 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
                .mask = GENMASK(7, 0) & ~BIT(5),
                .mode = 0444,
        },
+       {
+               .label = "reset_ac_pwr_fail",
+               .reg = MLXPLAT_CPLD_LPC_REG_RST_CAUSE2_OFFSET,
+               .mask = GENMASK(7, 0) & ~BIT(6),
+               .mode = 0444,
+       },
        {
                .label = "psu1_on",
                .reg = MLXPLAT_CPLD_LPC_REG_GP1_OFFSET,
@@ -1317,6 +1353,43 @@ static struct mlxreg_core_data mlxplat_mlxcpld_default_ng_regs_io_data[] = {
                .bit = GENMASK(7, 0),
                .mode = 0444,
        },
+       {
+               .label = "voltreg_update_status",
+               .reg = MLXPLAT_CPLD_LPC_REG_GP0_RO_OFFSET,
+               .mask = MLXPLAT_CPLD_VOLTREG_UPD_MASK,
+               .bit = 5,
+               .mode = 0444,
+       },
+       {
+               .label = "vpd_wp",
+               .reg = MLXPLAT_CPLD_LPC_REG_GP0_OFFSET,
+               .mask = GENMASK(7, 0) & ~BIT(3),
+               .mode = 0644,
+       },
+       {
+               .label = "pcie_asic_reset_dis",
+               .reg = MLXPLAT_CPLD_LPC_REG_GP0_OFFSET,
+               .mask = GENMASK(7, 0) & ~BIT(4),
+               .mode = 0644,
+       },
+       {
+               .label = "config1",
+               .reg = MLXPLAT_CPLD_LPC_REG_CONFIG1_OFFSET,
+               .bit = GENMASK(7, 0),
+               .mode = 0444,
+       },
+       {
+               .label = "config2",
+               .reg = MLXPLAT_CPLD_LPC_REG_CONFIG2_OFFSET,
+               .bit = GENMASK(7, 0),
+               .mode = 0444,
+       },
+       {
+               .label = "ufm_version",
+               .reg = MLXPLAT_CPLD_LPC_REG_UFM_VERSION_OFFSET,
+               .bit = GENMASK(7, 0),
+               .mode = 0444,
+       },
 };
 
 static struct mlxreg_core_platform_data mlxplat_default_ng_regs_io_data = {
@@ -1575,6 +1648,7 @@ static bool mlxplat_mlxcpld_writeable_reg(struct device *dev, unsigned int reg)
        case MLXPLAT_CPLD_LPC_REG_LED3_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_LED4_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_LED5_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_GP0_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_GP1_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_WP1_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_GP2_OFFSET:
@@ -1621,6 +1695,8 @@ static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
        case MLXPLAT_CPLD_LPC_REG_LED4_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_LED5_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_FAN_DIRECTION:
+       case MLXPLAT_CPLD_LPC_REG_GP0_RO_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_GP0_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_GP1_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_WP1_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_GP2_OFFSET:
@@ -1671,6 +1747,9 @@ static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
        case MLXPLAT_CPLD_LPC_REG_FAN_CAP2_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_FAN_DRW_CAP_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_TACHO_SPEED_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_CONFIG1_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_CONFIG2_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_UFM_VERSION_OFFSET:
                return true;
        }
        return false;
@@ -1692,6 +1771,8 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
        case MLXPLAT_CPLD_LPC_REG_LED4_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_LED5_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_FAN_DIRECTION:
+       case MLXPLAT_CPLD_LPC_REG_GP0_RO_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_GP0_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_GP1_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_GP2_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET:
@@ -1734,6 +1815,9 @@ static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
        case MLXPLAT_CPLD_LPC_REG_FAN_CAP2_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_FAN_DRW_CAP_OFFSET:
        case MLXPLAT_CPLD_LPC_REG_TACHO_SPEED_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_CONFIG1_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_CONFIG2_OFFSET:
+       case MLXPLAT_CPLD_LPC_REG_UFM_VERSION_OFFSET:
                return true;
        }
        return false;