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@ -4,131 +4,175 @@ |
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#include <linux/types.h> |
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#include <linux/list.h> |
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typedef struct USB_IN_Desc { |
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volatile __u16 sw_len; |
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volatile __u16 command; |
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volatile unsigned long next; |
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volatile unsigned long buf; |
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volatile __u16 hw_len; |
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volatile __u16 status; |
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} USB_IN_Desc_t; |
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typedef struct USB_SB_Desc { |
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volatile __u16 sw_len; |
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volatile __u16 command; |
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volatile unsigned long next; |
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volatile unsigned long buf; |
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__u32 dummy; |
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} USB_SB_Desc_t; |
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typedef struct USB_EP_Desc { |
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volatile __u16 hw_len; |
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volatile __u16 command; |
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volatile unsigned long sub; |
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volatile unsigned long next; |
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__u32 dummy; |
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} USB_EP_Desc_t; |
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struct virt_root_hub { |
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int devnum; |
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void *urb; |
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void *int_addr; |
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int send; |
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int interval; |
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int numports; |
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struct timer_list rh_int_timer; |
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volatile __u16 wPortChange_1; |
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volatile __u16 wPortChange_2; |
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volatile __u16 prev_wPortStatus_1; |
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volatile __u16 prev_wPortStatus_2; |
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struct USB_IN_Desc { |
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volatile __u16 sw_len; |
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volatile __u16 command; |
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volatile unsigned long next; |
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volatile unsigned long buf; |
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volatile __u16 hw_len; |
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volatile __u16 status; |
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}; |
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struct etrax_usb_intr_traffic { |
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int sleeping; |
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int error; |
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struct wait_queue *wq; |
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struct USB_SB_Desc { |
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volatile __u16 sw_len; |
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volatile __u16 command; |
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volatile unsigned long next; |
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volatile unsigned long buf; |
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}; |
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struct USB_EP_Desc { |
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volatile __u16 hw_len; |
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volatile __u16 command; |
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volatile unsigned long sub; |
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volatile unsigned long next; |
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}; |
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/* Root Hub port status struct */ |
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struct crisv10_rh { |
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volatile __u16 wPortChange[2]; |
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volatile __u16 wPortStatusPrev[2]; |
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}; |
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/* HCD description */ |
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struct crisv10_hcd { |
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spinlock_t lock; |
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__u8 num_ports; |
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__u8 running; |
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}; |
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/* Endpoint HC private data description */ |
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struct crisv10_ep_priv { |
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int epid; |
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}; |
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/* Additional software state info for a USB Controller epid */ |
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struct etrax_epid { |
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__u8 inuse; /* !0 = setup in Etrax and used for a endpoint */ |
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__u8 disabled; /* !0 = Temporarly disabled to avoid resubmission */ |
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__u8 type; /* Setup as: PIPE_BULK, PIPE_CONTROL ... */ |
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__u8 out_traffic; /* !0 = This epid is for out traffic */ |
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}; |
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/* Struct to hold information of scheduled later URB completion */ |
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struct urb_later_data { |
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struct delayed_work dws; |
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struct usb_hcd *hcd; |
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struct urb *urb; |
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int urb_num; |
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int status; |
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}; |
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typedef struct etrax_usb_hc { |
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struct usb_bus *bus; |
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struct virt_root_hub rh; |
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struct etrax_usb_intr_traffic intr; |
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} etrax_hc_t; |
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typedef enum { |
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STARTED, |
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NOT_STARTED, |
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UNLINK, |
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TRANSFER_DONE, |
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WAITING_FOR_DESCR_INTR |
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} etrax_usb_urb_state_t; |
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typedef struct etrax_usb_urb_priv { |
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/* The first_sb field is used for freeing all SB descriptors belonging
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to an urb. The corresponding ep descriptor's sub pointer cannot be |
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used for this since the DMA advances the sub pointer as it processes |
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the sb list. */ |
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USB_SB_Desc_t *first_sb; |
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/* The last_sb field referes to the last SB descriptor that belongs to
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this urb. This is important to know so we can free the SB descriptors |
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that ranges between first_sb and last_sb. */ |
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USB_SB_Desc_t *last_sb; |
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/* The rx_offset field is used in ctrl and bulk traffic to keep track
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of the offset in the urb's transfer_buffer where incoming data should be |
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copied to. */ |
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__u32 rx_offset; |
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/* Counter used in isochronous transfers to keep track of the
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number of packets received/transmitted. */ |
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__u32 isoc_packet_counter; |
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/* This field is used to pass information about the urb's current state between
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the various interrupt handlers (thus marked volatile). */ |
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volatile etrax_usb_urb_state_t urb_state; |
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/* Connection between the submitted urb and ETRAX epid number */ |
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__u8 epid; |
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/* The rx_data_list field is used for periodic traffic, to hold
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received data for later processing in the the complete_urb functions, |
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where the data us copied to the urb's transfer_buffer. Basically, we |
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use this intermediate storage because we don't know when it's safe to |
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reuse the transfer_buffer (FIXME?). */ |
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struct list_head rx_data_list; |
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} etrax_urb_priv_t; |
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/* This struct is for passing data from the top half to the bottom half. */ |
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typedef struct usb_interrupt_registers |
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{ |
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etrax_hc_t *hc; |
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__u32 r_usb_epid_attn; |
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__u8 r_usb_status; |
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__u16 r_usb_rh_port_status_1; |
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__u16 r_usb_rh_port_status_2; |
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__u32 r_usb_irq_mask_read; |
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__u32 r_usb_fm_number; |
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struct work_struct usb_bh; |
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} usb_interrupt_registers_t; |
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/* This struct is for passing data from the isoc top half to the isoc bottom half. */ |
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typedef struct usb_isoc_complete_data |
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{ |
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struct urb *urb; |
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struct work_struct usb_bh; |
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} usb_isoc_complete_data_t; |
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STARTED, |
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NOT_STARTED, |
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UNLINK, |
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} crisv10_urb_state_t; |
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struct crisv10_urb_priv { |
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/* Sequence number for this URB. Every new submited URB gets this from
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a incrementing counter. Used when a URB is scheduled for later finish to |
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be sure that the intended URB hasn't already been completed (device |
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drivers has a tendency to reuse URBs once they are completed, causing us |
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to not be able to single old ones out only based on the URB pointer.) */ |
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__u32 urb_num; |
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/* The first_sb field is used for freeing all SB descriptors belonging
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to an urb. The corresponding ep descriptor's sub pointer cannot be |
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used for this since the DMA advances the sub pointer as it processes |
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the sb list. */ |
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struct USB_SB_Desc *first_sb; |
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/* The last_sb field referes to the last SB descriptor that belongs to
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this urb. This is important to know so we can free the SB descriptors |
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that ranges between first_sb and last_sb. */ |
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struct USB_SB_Desc *last_sb; |
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/* The rx_offset field is used in ctrl and bulk traffic to keep track
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of the offset in the urb's transfer_buffer where incoming data should be |
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copied to. */ |
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__u32 rx_offset; |
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/* Counter used in isochronous transfers to keep track of the
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number of packets received/transmitted. */ |
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__u32 isoc_packet_counter; |
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/* Flag that marks if this Isoc Out URB has finished it's transfer. Used
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because several URBs can be finished before list is processed */ |
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__u8 isoc_out_done; |
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/* This field is used to pass information about the urb's current state
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between the various interrupt handlers (thus marked volatile). */ |
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volatile crisv10_urb_state_t urb_state; |
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/* In Ctrl transfers consist of (at least) 3 packets: SETUP, IN and ZOUT.
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When DMA8 sub-channel 2 has processed the SB list for this sequence we |
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get a interrupt. We also get a interrupt for In transfers and which |
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one of these interrupts that comes first depends of data size and device. |
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To be sure that we have got both interrupts before we complete the URB |
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we have these to flags that shows which part that has completed. |
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We can then check when we get one of the interrupts that if the other has |
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occured it's safe for us to complete the URB, otherwise we set appropriate |
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flag and do the completion when we get the other interrupt. */ |
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volatile unsigned char ctrl_zout_done; |
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volatile unsigned char ctrl_rx_done; |
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/* Connection between the submitted urb and ETRAX epid number */ |
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__u8 epid; |
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/* The rx_data_list field is used for periodic traffic, to hold
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received data for later processing in the the complete_urb functions, |
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where the data us copied to the urb's transfer_buffer. Basically, we |
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use this intermediate storage because we don't know when it's safe to |
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reuse the transfer_buffer (FIXME?). */ |
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struct list_head rx_data_list; |
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/* The interval time rounded up to closest 2^N */ |
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int interval; |
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/* Pool of EP descriptors needed if it's a INTR transfer.
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Amount of EPs in pool correspons to how many INTR that should |
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be inserted in TxIntrEPList (max 128, defined by MAX_INTR_INTERVAL) */ |
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struct USB_EP_Desc* intr_ep_pool[128]; |
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/* The mount of EPs allocated for this INTR URB */ |
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int intr_ep_pool_length; |
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/* Pointer to info struct if URB is scheduled to be finished later */ |
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struct urb_later_data* later_data; |
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/* Allocated bandwidth for isochronous and interrupt traffic */ |
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int bandwidth; |
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}; |
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/* This struct holds data we get from the rx descriptors for DMA channel 9
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for periodic traffic (intr and isoc). */ |
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typedef struct rx_data |
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{ |
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void *data; |
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int length; |
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struct list_head list; |
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} rx_data_t; |
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/* This struct is for passing data from the top half to the bottom half irq
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handlers */ |
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struct crisv10_irq_reg { |
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struct usb_hcd* hcd; |
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__u32 r_usb_epid_attn; |
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__u8 r_usb_status; |
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__u16 r_usb_rh_port_status_1; |
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__u16 r_usb_rh_port_status_2; |
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__u32 r_usb_irq_mask_read; |
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__u32 r_usb_fm_number; |
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struct work_struct usb_bh; |
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}; |
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/* This struct is for passing data from the isoc top half to the isoc bottom
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half. */ |
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struct crisv10_isoc_complete_data { |
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struct usb_hcd *hcd; |
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struct urb *urb; |
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struct work_struct usb_bh; |
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}; |
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/* Entry item for URB lists for each endpint */ |
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typedef struct urb_entry |
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{ |
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struct urb *urb; |