[patch v11 10/12] platform/x86: mlx-platform: Extend register map configuration with IO access verification callbacks

Vadim Pasternak
2018-01-24T20:34:56Z

Add definitions for hotplug device masks and events offsets.

Extend register map configuration with the sets of writable, readable and
volatile registers to allow verification prior to the access.

Extend register map configuration with cache type field: use flat type.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
---
drivers/platform/x86/mlx-platform.c | 71 +++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)

diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index 81a7306..95eb9d9 100644
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -48,9 +48,18 @@
#define MLXPLAT_CPLD_LPC_I2C_BASE_ADRR 0x2000
#define MLXPLAT_CPLD_LPC_REG_BASE_ADRR 0x2500
#define MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET 0x3a
+#define MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET 0x3b
+#define MLXPLAT_CPLD_LPC_REG_AGGRLO_OFFSET 0x40
+#define MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET 0x41
#define MLXPLAT_CPLD_LPC_REG_PSU_OFFSET 0x58
+#define MLXPLAT_CPLD_LPC_REG_PSU_EVENT_OFFSET 0x59
+#define MLXPLAT_CPLD_LPC_REG_PSU_MASK_OFFSET 0x5a
#define MLXPLAT_CPLD_LPC_REG_PWR_OFFSET 0x64
+#define MLXPLAT_CPLD_LPC_REG_PWR_EVENT_OFFSET 0x65
+#define MLXPLAT_CPLD_LPC_REG_PWR_MASK_OFFSET 0x66
#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_IO_RANGE 0x100
#define MLXPLAT_CPLD_LPC_I2C_CH1_OFF 0xdb
#define MLXPLAT_CPLD_LPC_I2C_CH2_OFF 0xda
@@ -299,6 +308,64 @@ struct mlxreg_core_hotplug_platform_data mlxplat_mlxcpld_msn21xx_data = {
.mask = MLXPLAT_CPLD_AGGR_MASK_DEF,
};

+static bool mlxplat_mlxcpld_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PSU_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PSU_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWR_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
+ return true;
+ }
+ return false;
+}
+
+static bool mlxplat_mlxcpld_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_AGGRLO_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PSU_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PSU_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PSU_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWR_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWR_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
+ return true;
+ }
+ return false;
+}
+
+static bool mlxplat_mlxcpld_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MLXPLAT_CPLD_LPC_REG_AGGR_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_AGGR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_AGGRLO_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_AGGRLO_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PSU_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PSU_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PSU_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWR_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWR_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_PWR_MASK_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_EVENT_OFFSET:
+ case MLXPLAT_CPLD_LPC_REG_FAN_MASK_OFFSET:
+ return true;
+ }
+ return false;
+}
+
static int
mlxplat_mlxcpld_reg_read(void *context, unsigned int reg, unsigned int *val)
{
@@ -317,6 +384,10 @@ static const struct regmap_config mlxplat_mlxcpld_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 255,
+ .cache_type = REGCACHE_FLAT,
+ .writeable_reg = mlxplat_mlxcpld_writeable_reg,
+ .readable_reg = mlxplat_mlxcpld_readable_reg,
+ .volatile_reg = mlxplat_mlxcpld_volatile_reg,
.reg_read = mlxplat_mlxcpld_reg_read,
.reg_write = mlxplat_mlxcpld_reg_write,
};
--
2.1.4