diff options
Diffstat (limited to 'drivers/usb/gadget/legacy/tcm_usb_gadget.h')
| -rw-r--r-- | drivers/usb/gadget/legacy/tcm_usb_gadget.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/drivers/usb/gadget/legacy/tcm_usb_gadget.h b/drivers/usb/gadget/legacy/tcm_usb_gadget.h new file mode 100644 index 000000000000..8289219925b8 --- /dev/null +++ b/drivers/usb/gadget/legacy/tcm_usb_gadget.h @@ -0,0 +1,145 @@ +#ifndef __TARGET_USB_GADGET_H__ +#define __TARGET_USB_GADGET_H__ + +#include <linux/kref.h> +/* #include <linux/usb/uas.h> */ +#include <linux/usb/composite.h> +#include <linux/usb/uas.h> +#include <linux/usb/storage.h> +#include <scsi/scsi.h> +#include <target/target_core_base.h> +#include <target/target_core_fabric.h> + +#define USBG_NAMELEN 32 + +#define fuas_to_gadget(f) (f->function.config->cdev->gadget) +#define UASP_SS_EP_COMP_LOG_STREAMS 4 +#define UASP_SS_EP_COMP_NUM_STREAMS (1 << UASP_SS_EP_COMP_LOG_STREAMS) + +enum { + USB_G_STR_CONFIG = USB_GADGET_FIRST_AVAIL_IDX, + USB_G_STR_INT_UAS, + USB_G_STR_INT_BBB, +}; + +#define USB_G_ALT_INT_BBB 0 +#define USB_G_ALT_INT_UAS 1 + +struct usbg_nacl { + /* Binary World Wide unique Port Name for SAS Initiator port */ + u64 iport_wwpn; + /* ASCII formatted WWPN for Sas Initiator port */ + char iport_name[USBG_NAMELEN]; + /* Returned by usbg_make_nodeacl() */ + struct se_node_acl se_node_acl; +}; + +struct tcm_usbg_nexus { + struct se_session *tvn_se_sess; +}; + +struct usbg_tpg { + struct mutex tpg_mutex; + /* SAS port target portal group tag for TCM */ + u16 tport_tpgt; + /* Pointer back to usbg_tport */ + struct usbg_tport *tport; + struct workqueue_struct *workqueue; + /* Returned by usbg_make_tpg() */ + struct se_portal_group se_tpg; + u32 gadget_connect; + struct tcm_usbg_nexus *tpg_nexus; + atomic_t tpg_port_count; +}; + +struct usbg_tport { + /* SCSI protocol the tport is providing */ + u8 tport_proto_id; + /* Binary World Wide unique Port Name for SAS Target port */ + u64 tport_wwpn; + /* ASCII formatted WWPN for SAS Target port */ + char tport_name[USBG_NAMELEN]; + /* Returned by usbg_make_tport() */ + struct se_wwn tport_wwn; +}; + +enum uas_state { + UASP_SEND_DATA, + UASP_RECEIVE_DATA, + UASP_SEND_STATUS, + UASP_QUEUE_COMMAND, +}; + +#define USBG_MAX_CMD 64 +struct usbg_cmd { + /* common */ + u8 cmd_buf[USBG_MAX_CMD]; + u32 data_len; + struct work_struct work; + int unpacked_lun; + struct se_cmd se_cmd; + void *data_buf; /* used if no sg support available */ + struct f_uas *fu; + struct completion write_complete; + struct kref ref; + + /* UAS only */ + u16 tag; + u16 prio_attr; + struct sense_iu sense_iu; + enum uas_state state; + struct uas_stream *stream; + + /* BOT only */ + __le32 bot_tag; + unsigned int csw_code; + unsigned is_read:1; + +}; + +struct uas_stream { + struct usb_request *req_in; + struct usb_request *req_out; + struct usb_request *req_status; +}; + +struct usbg_cdb { + struct usb_request *req; + void *buf; +}; + +struct bot_status { + struct usb_request *req; + struct bulk_cs_wrap csw; +}; + +struct f_uas { + struct usbg_tpg *tpg; + struct usb_function function; + u16 iface; + + u32 flags; +#define USBG_ENABLED (1 << 0) +#define USBG_IS_UAS (1 << 1) +#define USBG_USE_STREAMS (1 << 2) +#define USBG_IS_BOT (1 << 3) +#define USBG_BOT_CMD_PEND (1 << 4) + + struct usbg_cdb cmd; + struct usb_ep *ep_in; + struct usb_ep *ep_out; + + /* UAS */ + struct usb_ep *ep_status; + struct usb_ep *ep_cmd; + struct uas_stream stream[UASP_SS_EP_COMP_NUM_STREAMS]; + + /* BOT */ + struct bot_status bot_status; + struct usb_request *bot_req_in; + struct usb_request *bot_req_out; +}; + +extern struct usbg_tpg *the_only_tpg_I_currently_have; + +#endif |