diff options
Diffstat (limited to 'drivers/usb/dwc3/core.h')
| -rw-r--r-- | drivers/usb/dwc3/core.h | 84 |
1 files changed, 64 insertions, 20 deletions
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 6254b2ff9080..7ddf9449a063 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -152,6 +152,24 @@ /* Bit fields */ +/* Global Debug Queue/FIFO Space Available Register */ +#define DWC3_GDBGFIFOSPACE_NUM(n) ((n) & 0x1f) +#define DWC3_GDBGFIFOSPACE_TYPE(n) (((n) << 5) & 0x1e0) +#define DWC3_GDBGFIFOSPACE_SPACE_AVAILABLE(n) (((n) >> 16) & 0xffff) + +#define DWC3_TXFIFOQ 1 +#define DWC3_RXFIFOQ 3 +#define DWC3_TXREQQ 5 +#define DWC3_RXREQQ 7 +#define DWC3_RXINFOQ 9 +#define DWC3_DESCFETCHQ 13 +#define DWC3_EVENTQ 15 + +/* Global RX Threshold Configuration Register */ +#define DWC3_GRXTHRCFG_MAXRXBURSTSIZE(n) (((n) & 0x1f) << 19) +#define DWC3_GRXTHRCFG_RXPKTCNT(n) (((n) & 0xf) << 24) +#define DWC3_GRXTHRCFG_PKTCNTSEL (1 << 29) + /* Global Configuration Register */ #define DWC3_GCTL_PWRDNSCALE(n) ((n) << 19) #define DWC3_GCTL_U2RSTECN (1 << 16) @@ -193,6 +211,7 @@ /* Global USB3 PIPE Control Register */ #define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31) #define DWC3_GUSB3PIPECTL_U2SSINP3OK (1 << 29) +#define DWC3_GUSB3PIPECTL_DISRXDETINP3 (1 << 28) #define DWC3_GUSB3PIPECTL_REQP1P2P3 (1 << 24) #define DWC3_GUSB3PIPECTL_DEP1P2P3(n) ((n) << 19) #define DWC3_GUSB3PIPECTL_DEP1P2P3_MASK DWC3_GUSB3PIPECTL_DEP1P2P3(7) @@ -257,6 +276,9 @@ #define DWC3_DCFG_LOWSPEED (2 << 0) #define DWC3_DCFG_FULLSPEED1 (3 << 0) +#define DWC3_DCFG_NUMP_SHIFT 17 +#define DWC3_DCFG_NUMP(n) (((n) >> DWC3_DCFG_NUMP_SHIFT) & 0x1f) +#define DWC3_DCFG_NUMP_MASK (0x1f << DWC3_DCFG_NUMP_SHIFT) #define DWC3_DCFG_LPM_CAP (1 << 22) /* Device Control Register */ @@ -438,18 +460,17 @@ struct dwc3_event_buffer { #define DWC3_EP_DIRECTION_TX true #define DWC3_EP_DIRECTION_RX false -#define DWC3_TRB_NUM 32 -#define DWC3_TRB_MASK (DWC3_TRB_NUM - 1) +#define DWC3_TRB_NUM 256 /** * struct dwc3_ep - device side endpoint representation * @endpoint: usb endpoint - * @request_list: list of requests for this endpoint - * @req_queued: list of requests on this ep which have TRBs setup + * @pending_list: list of pending requests for this endpoint + * @started_list: list of started requests on this endpoint * @trb_pool: array of transaction buffers * @trb_pool_dma: dma address of @trb_pool - * @free_slot: next slot which is going to be used - * @busy_slot: first slot which is owned by HW + * @trb_enqueue: enqueue 'pointer' into TRB array + * @trb_dequeue: dequeue 'pointer' into TRB array * @desc: usb_endpoint_descriptor pointer * @dwc: pointer to DWC controller * @saved_state: ep state saved during hibernation @@ -464,13 +485,11 @@ struct dwc3_event_buffer { */ struct dwc3_ep { struct usb_ep endpoint; - struct list_head request_list; - struct list_head req_queued; + struct list_head pending_list; + struct list_head started_list; struct dwc3_trb *trb_pool; dma_addr_t trb_pool_dma; - u32 free_slot; - u32 busy_slot; const struct usb_ss_ep_comp_descriptor *comp_desc; struct dwc3 *dwc; @@ -486,6 +505,18 @@ struct dwc3_ep { /* This last one is specific to EP0 */ #define DWC3_EP0_DIR_IN (1 << 31) + /* + * IMPORTANT: we *know* we have 256 TRBs in our @trb_pool, so we will + * use a u8 type here. If anybody decides to increase number of TRBs to + * anything larger than 256 - I can't see why people would want to do + * this though - then this type needs to be changed. + * + * By using u8 types we ensure that our % operator when incrementing + * enqueue and dequeue get optimized away by the compiler. + */ + u8 trb_enqueue; + u8 trb_dequeue; + u8 number; u8 type; u8 resource_index; @@ -557,6 +588,7 @@ enum dwc3_link_state { #define DWC3_TRB_CTRL_IOC (1 << 11) #define DWC3_TRB_CTRL_SID_SOFN(n) (((n) & 0xffff) << 14) +#define DWC3_TRBCTL_TYPE(n) ((n) & (0x3f << 4)) #define DWC3_TRBCTL_NORMAL DWC3_TRB_CTRL_TRBCTL(1) #define DWC3_TRBCTL_CONTROL_SETUP DWC3_TRB_CTRL_TRBCTL(2) #define DWC3_TRBCTL_CONTROL_STATUS2 DWC3_TRB_CTRL_TRBCTL(3) @@ -623,19 +655,32 @@ struct dwc3_hwparams { /* HWPARAMS7 */ #define DWC3_RAM1_DEPTH(n) ((n) & 0xffff) +/** + * struct dwc3_request - representation of a transfer request + * @request: struct usb_request to be transferred + * @list: a list_head used for request queueing + * @dep: struct dwc3_ep owning this request + * @first_trb_index: index to first trb used by this request + * @epnum: endpoint number to which this request refers + * @trb: pointer to struct dwc3_trb + * @trb_dma: DMA address of @trb + * @direction: IN or OUT direction flag + * @mapped: true when request has been dma-mapped + * @queued: true when request has been queued to HW + */ struct dwc3_request { struct usb_request request; struct list_head list; struct dwc3_ep *dep; - u32 start_slot; + u8 first_trb_index; u8 epnum; struct dwc3_trb *trb; dma_addr_t trb_dma; unsigned direction:1; unsigned mapped:1; - unsigned queued:1; + unsigned started:1; }; /* @@ -667,7 +712,6 @@ struct dwc3_scratchpad_array { * @regs: base address for our registers * @regs_size: address space size * @nr_scratch: number of scratch buffers - * @num_event_buffers: calculated number of event buffers * @u1u2: only used on revisions <1.83a for workaround * @maximum_speed: maximum speed requested (mainly for testing purposes) * @revision: revision register contents @@ -709,9 +753,7 @@ struct dwc3_scratchpad_array { * 0 - utmi_sleep_n * 1 - utmi_l1_suspend_n * @is_fpga: true when we are using the FPGA board - * @needs_fifo_resize: not all users might want fifo resizing, flag it * @pullups_connected: true when Run/Stop bit is set - * @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes. * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround * @start_config_issued: true when StartConfig command has been issued * @three_stage_setup: set if we perform a three phase setup @@ -756,7 +798,7 @@ struct dwc3 { struct platform_device *xhci; struct resource xhci_resources[DWC3_XHCI_RESOURCES_NUM]; - struct dwc3_event_buffer **ev_buffs; + struct dwc3_event_buffer *ev_buf; struct dwc3_ep *eps[DWC3_ENDPOINTS_NUM]; struct usb_gadget gadget; @@ -780,7 +822,6 @@ struct dwc3 { u32 gctl; u32 nr_scratch; - u32 num_event_buffers; u32 u1u2; u32 maximum_speed; @@ -855,9 +896,7 @@ struct dwc3 { unsigned has_lpm_erratum:1; unsigned is_utmi_l1_suspend:1; unsigned is_fpga:1; - unsigned needs_fifo_resize:1; unsigned pullups_connected:1; - unsigned resize_fifos:1; unsigned setup_packet_pending:1; unsigned three_stage_setup:1; unsigned usb3_lpm_capable:1; @@ -873,6 +912,7 @@ struct dwc3 { unsigned dis_u3_susphy_quirk:1; unsigned dis_u2_susphy_quirk:1; unsigned dis_enblslpm_quirk:1; + unsigned dis_rxdet_inp3_quirk:1; unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis:2; @@ -938,6 +978,10 @@ struct dwc3_event_depevt { #define DEPEVT_STATUS_CONTROL_DATA 1 #define DEPEVT_STATUS_CONTROL_STATUS 2 +/* In response to Start Transfer */ +#define DEPEVT_TRANSFER_NO_RESOURCE 1 +#define DEPEVT_TRANSFER_BUS_EXPIRY 2 + u32 parameters:16; } __packed; @@ -1025,7 +1069,7 @@ struct dwc3_gadget_ep_cmd_params { /* prototypes */ void dwc3_set_mode(struct dwc3 *dwc, u32 mode); -int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc); +u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type); /* check whether we are on the DWC_usb31 core */ static inline bool dwc3_is_usb31(struct dwc3 *dwc) |