diff options
Diffstat (limited to 'drivers/net/can/c_can/c_can.h')
| -rw-r--r-- | drivers/net/can/c_can/c_can.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h index d2e1c21b143f..faa8404162b3 100644 --- a/drivers/net/can/c_can/c_can.h +++ b/drivers/net/can/c_can/c_can.h @@ -22,6 +22,33 @@ #ifndef C_CAN_H #define C_CAN_H +/* + * IFx register masks: + * allow easy operation on 16-bit registers when the + * argument is 32-bit instead + */ +#define IFX_WRITE_LOW_16BIT(x) ((x) & 0xFFFF) +#define IFX_WRITE_HIGH_16BIT(x) (((x) & 0xFFFF0000) >> 16) + +/* message object split */ +#define C_CAN_NO_OF_OBJECTS 32 +#define C_CAN_MSG_OBJ_RX_NUM 16 +#define C_CAN_MSG_OBJ_TX_NUM 16 + +#define C_CAN_MSG_OBJ_RX_FIRST 1 +#define C_CAN_MSG_OBJ_RX_LAST (C_CAN_MSG_OBJ_RX_FIRST + \ + C_CAN_MSG_OBJ_RX_NUM - 1) + +#define C_CAN_MSG_OBJ_TX_FIRST (C_CAN_MSG_OBJ_RX_LAST + 1) +#define C_CAN_MSG_OBJ_TX_LAST (C_CAN_MSG_OBJ_TX_FIRST + \ + C_CAN_MSG_OBJ_TX_NUM - 1) + +#define C_CAN_MSG_OBJ_RX_SPLIT 9 +#define C_CAN_MSG_RX_LOW_LAST (C_CAN_MSG_OBJ_RX_SPLIT - 1) + +#define C_CAN_NEXT_MSG_OBJ_MASK (C_CAN_MSG_OBJ_TX_NUM - 1) +#define RECEIVE_OBJECT_BITS 0x0000ffff + enum reg { C_CAN_CTRL_REG = 0, C_CAN_CTRL_EX_REG, @@ -156,6 +183,7 @@ struct c_can_priv { struct napi_struct napi; struct net_device *dev; struct device *device; + spinlock_t xmit_lock; int tx_object; int current_status; int last_status; @@ -172,6 +200,7 @@ struct c_can_priv { u32 __iomem *raminit_ctrlreg; unsigned int instance; void (*raminit) (const struct c_can_priv *priv, bool enable); + u32 dlc[C_CAN_MSG_OBJ_TX_NUM]; }; struct net_device *alloc_c_can_dev(void); |