diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fwctl.h | 12 | ||||
| -rw-r--r-- | include/uapi/fwctl/fwctl.h | 31 |
2 files changed, 43 insertions, 0 deletions
diff --git a/include/linux/fwctl.h b/include/linux/fwctl.h index faa4b2c780e0..700a5be940e3 100644 --- a/include/linux/fwctl.h +++ b/include/linux/fwctl.h @@ -7,6 +7,7 @@ #include <linux/device.h> #include <linux/cdev.h> #include <linux/cleanup.h> +#include <uapi/fwctl/fwctl.h> struct fwctl_device; struct fwctl_uctx; @@ -20,6 +21,10 @@ struct fwctl_uctx; */ struct fwctl_ops { /** + * @device_type: The drivers assigned device_type number. This is uABI. + */ + enum fwctl_device_type device_type; + /** * @uctx_size: The size of the fwctl_uctx struct to allocate. The first * bytes of this memory will be a fwctl_uctx. The driver can use the * remaining bytes as its private memory. @@ -35,6 +40,13 @@ struct fwctl_ops { * is closed. */ void (*close_uctx)(struct fwctl_uctx *uctx); + /** + * @info: Implement FWCTL_INFO. Return a kmalloc() memory that is copied + * to out_device_data. On input length indicates the size of the user + * buffer on output it indicates the size of the memory. The driver can + * ignore length on input, the core code will handle everything. + */ + void *(*info)(struct fwctl_uctx *uctx, size_t *length); }; /** diff --git a/include/uapi/fwctl/fwctl.h b/include/uapi/fwctl/fwctl.h index 8f5fe821cf28..4052df63f66d 100644 --- a/include/uapi/fwctl/fwctl.h +++ b/include/uapi/fwctl/fwctl.h @@ -4,6 +4,9 @@ #ifndef _UAPI_FWCTL_H #define _UAPI_FWCTL_H +#include <linux/types.h> +#include <linux/ioctl.h> + #define FWCTL_TYPE 0x9A /** @@ -33,6 +36,34 @@ */ enum { FWCTL_CMD_BASE = 0, + FWCTL_CMD_INFO = 0, +}; + +enum fwctl_device_type { + FWCTL_DEVICE_TYPE_ERROR = 0, +}; + +/** + * struct fwctl_info - ioctl(FWCTL_INFO) + * @size: sizeof(struct fwctl_info) + * @flags: Must be 0 + * @out_device_type: Returns the type of the device from enum fwctl_device_type + * @device_data_len: On input the length of the out_device_data memory. On + * output the size of the kernel's device_data which may be larger or + * smaller than the input. Maybe 0 on input. + * @out_device_data: Pointer to a memory of device_data_len bytes. Kernel will + * fill the entire memory, zeroing as required. + * + * Returns basic information about this fwctl instance, particularly what driver + * is being used to define the device_data format. + */ +struct fwctl_info { + __u32 size; + __u32 flags; + __u32 out_device_type; + __u32 device_data_len; + __aligned_u64 out_device_data; }; +#define FWCTL_INFO _IO(FWCTL_TYPE, FWCTL_CMD_INFO) #endif |