diff options
Diffstat (limited to 'include/linux/rpmsg.h')
| -rw-r--r-- | include/linux/rpmsg.h | 92 |
1 files changed, 83 insertions, 9 deletions
diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h index 9fe156d1c018..523c98b96cb4 100644 --- a/include/linux/rpmsg.h +++ b/include/linux/rpmsg.h @@ -17,8 +17,8 @@ #include <linux/kref.h> #include <linux/mutex.h> #include <linux/poll.h> - -#define RPMSG_ADDR_ANY 0xFFFFFFFF +#include <linux/rpmsg/byteorder.h> +#include <uapi/linux/rpmsg.h> struct rpmsg_device; struct rpmsg_endpoint; @@ -41,20 +41,24 @@ struct rpmsg_channel_info { * rpmsg_device - device that belong to the rpmsg bus * @dev: the device struct * @id: device id (used to match between rpmsg drivers and devices) - * @driver_override: driver name to force a match + * @driver_override: driver name to force a match; do not set directly, + * because core frees it; use driver_set_override() to + * set or clear it. * @src: local address * @dst: destination address * @ept: the rpmsg endpoint of this channel * @announce: if set, rpmsg will announce the creation/removal of this channel + * @little_endian: True if transport is using little endian byte representation */ struct rpmsg_device { struct device dev; struct rpmsg_device_id id; - char *driver_override; + const char *driver_override; u32 src; u32 dst; struct rpmsg_endpoint *ept; bool announce; + bool little_endian; const struct rpmsg_device_ops *ops; }; @@ -111,10 +115,61 @@ struct rpmsg_driver { int (*callback)(struct rpmsg_device *, void *, int, void *, u32); }; +static inline u16 rpmsg16_to_cpu(struct rpmsg_device *rpdev, __rpmsg16 val) +{ + if (!rpdev) + return __rpmsg16_to_cpu(rpmsg_is_little_endian(), val); + else + return __rpmsg16_to_cpu(rpdev->little_endian, val); +} + +static inline __rpmsg16 cpu_to_rpmsg16(struct rpmsg_device *rpdev, u16 val) +{ + if (!rpdev) + return __cpu_to_rpmsg16(rpmsg_is_little_endian(), val); + else + return __cpu_to_rpmsg16(rpdev->little_endian, val); +} + +static inline u32 rpmsg32_to_cpu(struct rpmsg_device *rpdev, __rpmsg32 val) +{ + if (!rpdev) + return __rpmsg32_to_cpu(rpmsg_is_little_endian(), val); + else + return __rpmsg32_to_cpu(rpdev->little_endian, val); +} + +static inline __rpmsg32 cpu_to_rpmsg32(struct rpmsg_device *rpdev, u32 val) +{ + if (!rpdev) + return __cpu_to_rpmsg32(rpmsg_is_little_endian(), val); + else + return __cpu_to_rpmsg32(rpdev->little_endian, val); +} + +static inline u64 rpmsg64_to_cpu(struct rpmsg_device *rpdev, __rpmsg64 val) +{ + if (!rpdev) + return __rpmsg64_to_cpu(rpmsg_is_little_endian(), val); + else + return __rpmsg64_to_cpu(rpdev->little_endian, val); +} + +static inline __rpmsg64 cpu_to_rpmsg64(struct rpmsg_device *rpdev, u64 val) +{ + if (!rpdev) + return __cpu_to_rpmsg64(rpmsg_is_little_endian(), val); + else + return __cpu_to_rpmsg64(rpdev->little_endian, val); +} + #if IS_ENABLED(CONFIG_RPMSG) -int register_rpmsg_device(struct rpmsg_device *dev); -void unregister_rpmsg_device(struct rpmsg_device *dev); +int rpmsg_register_device_override(struct rpmsg_device *rpdev, + const char *driver_override); +int rpmsg_register_device(struct rpmsg_device *rpdev); +int rpmsg_unregister_device(struct device *parent, + struct rpmsg_channel_info *chinfo); int __register_rpmsg_driver(struct rpmsg_driver *drv, struct module *owner); void unregister_rpmsg_driver(struct rpmsg_driver *drv); void rpmsg_destroy_ept(struct rpmsg_endpoint *); @@ -135,17 +190,28 @@ int rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst, __poll_t rpmsg_poll(struct rpmsg_endpoint *ept, struct file *filp, poll_table *wait); +ssize_t rpmsg_get_mtu(struct rpmsg_endpoint *ept); + #else -static inline int register_rpmsg_device(struct rpmsg_device *dev) +static inline int rpmsg_register_device_override(struct rpmsg_device *rpdev, + const char *driver_override) +{ + return -ENXIO; +} + +static inline int rpmsg_register_device(struct rpmsg_device *rpdev) { return -ENXIO; } -static inline void unregister_rpmsg_device(struct rpmsg_device *dev) +static inline int rpmsg_unregister_device(struct device *parent, + struct rpmsg_channel_info *chinfo) { /* This shouldn't be possible */ WARN_ON(1); + + return -ENXIO; } static inline int __register_rpmsg_driver(struct rpmsg_driver *drv, @@ -177,7 +243,7 @@ static inline struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_device *rpdev /* This shouldn't be possible */ WARN_ON(1); - return ERR_PTR(-ENXIO); + return NULL; } static inline int rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) @@ -242,6 +308,14 @@ static inline __poll_t rpmsg_poll(struct rpmsg_endpoint *ept, return 0; } +static inline ssize_t rpmsg_get_mtu(struct rpmsg_endpoint *ept) +{ + /* This shouldn't be possible */ + WARN_ON(1); + + return -ENXIO; +} + #endif /* IS_ENABLED(CONFIG_RPMSG) */ /* use a macro to avoid include chaining to get THIS_MODULE */ |