/* support at most 64 ep, use 32 size hash table */ #define SCH_EP_HASH_BITS 5
/** * To simplify scheduler algorithm, set a upper limit for ESIT, * if a synchromous ep's ESIT is larger than @XHCI_MTK_MAX_ESIT, * round down to the limit value, that means allocating more * bandwidth to it.
*/ #define XHCI_MTK_MAX_ESIT (1 << 6) #define XHCI_MTK_BW_INDEX(x) ((x) & (XHCI_MTK_MAX_ESIT - 1))
/** * @fs_bus_bw_out: save bandwidth used by FS/LS OUT eps in each uframes * @fs_bus_bw_in: save bandwidth used by FS/LS IN eps in each uframes * @ls_bus_bw: save bandwidth used by LS eps in each uframes * @fs_frame_bw: save bandwidth used by FS/LS eps in each FS frames * @in_ss_cnt: the count of Start-Split for IN eps * @ep_list: Endpoints using this TT
*/ struct mu3h_sch_tt {
u16 fs_bus_bw_out[XHCI_MTK_MAX_ESIT];
u16 fs_bus_bw_in[XHCI_MTK_MAX_ESIT];
u8 ls_bus_bw[XHCI_MTK_MAX_ESIT];
u16 fs_frame_bw[XHCI_MTK_FRAMES_CNT];
u8 in_ss_cnt[XHCI_MTK_MAX_ESIT]; struct list_head ep_list;
};
/** * struct mu3h_sch_bw_info: schedule information for bandwidth domain * * @bus_bw: array to keep track of bandwidth already used at each uframes * * treat a HS root port as a bandwidth domain, but treat a SS root port as * two bandwidth domains, one for IN eps and another for OUT eps.
*/ struct mu3h_sch_bw_info {
u32 bus_bw[XHCI_MTK_MAX_ESIT];
};
/** * struct mu3h_sch_ep_info: schedule information for endpoint * * @esit: unit is 125us, equal to 2 << Interval field in ep-context * @num_esit: number of @esit in a period * @num_budget_microframes: number of continuous uframes * (@repeat==1) scheduled within the interval * @hentry: hash table entry * @endpoint: linked into bandwidth domain which it belongs to * @tt_endpoint: linked into mu3h_sch_tt's list which it belongs to * @bw_info: bandwidth domain which this endpoint belongs * @sch_tt: mu3h_sch_tt linked into * @ep_type: endpoint type * @maxpkt: max packet size of endpoint * @ep: address of usb_host_endpoint struct * @allocated: the bandwidth is aready allocated from bus_bw * @offset: which uframe of the interval that transfer should be * scheduled first time within the interval * @repeat: the time gap between two uframes that transfers are * scheduled within a interval. in the simple algorithm, only * assign 0 or 1 to it; 0 means using only one uframe in a * interval, and 1 means using @num_budget_microframes * continuous uframes * @pkts: number of packets to be transferred in the scheduled uframes * @cs_count: number of CS that host will trigger * @burst_mode: burst mode for scheduling. 0: normal burst mode, * distribute the bMaxBurst+1 packets for a single burst * according to @pkts and @repeat, repeate the burst multiple * times; 1: distribute the (bMaxBurst+1)*(Mult+1) packets * according to @pkts and @repeat. normal mode is used by * default * @bw_budget_table: table to record bandwidth budget per microframe
*/ struct mu3h_sch_ep_info {
u32 esit;
u32 num_esit;
u32 num_budget_microframes; struct list_head endpoint; struct hlist_node hentry; struct list_head tt_endpoint; struct mu3h_sch_bw_info *bw_info; struct mu3h_sch_tt *sch_tt;
u32 ep_type;
u32 maxpkt; struct usb_host_endpoint *ep; enum usb_device_speed speed; bool allocated; /* * mtk xHCI scheduling information put into reserved DWs * in ep context
*/
u32 offset;
u32 repeat;
u32 pkts;
u32 cs_count;
u32 burst_mode;
u32 bw_budget_table[];
};
/** * struct mu3c_ippc_regs: MTK ssusb ip port control registers * @ip_pw_ctr0~3: ip power and clock control registers * @ip_pw_sts1~2: ip power and clock status registers * @ip_xhci_cap: ip xHCI capability register * @u3_ctrl_p[x]: ip usb3 port x control register, only low 4bytes are used * @u2_ctrl_p[x]: ip usb2 port x control register, only low 4bytes are used * @u2_phy_pll: usb2 phy pll control register
*/ struct mu3c_ippc_regs {
__le32 ip_pw_ctr0;
__le32 ip_pw_ctr1;
__le32 ip_pw_ctr2;
__le32 ip_pw_ctr3;
__le32 ip_pw_sts1;
__le32 ip_pw_sts2;
__le32 reserved0[3];
__le32 ip_xhci_cap;
__le32 reserved1[2];
__le64 u3_ctrl_p[MU3C_U3_PORT_MAX];
__le64 u2_ctrl_p[MU3C_U2_PORT_MAX];
__le32 reserved2;
__le32 u2_phy_pll;
__le32 reserved3[33]; /* 0x80 ~ 0xff */
};
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