1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
289 lines
8.4 KiB
C
289 lines
8.4 KiB
C
#ifndef __LINUX_ETRAX_USB_H
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#define __LINUX_ETRAX_USB_H
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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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};
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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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};
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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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/* 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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typedef struct urb_entry
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{
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struct urb *urb;
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struct list_head list;
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} urb_entry_t;
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/* ---------------------------------------------------------------------------
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Virtual Root HUB
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------------------------------------------------------------------------- */
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/* destination of request */
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#define RH_INTERFACE 0x01
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#define RH_ENDPOINT 0x02
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#define RH_OTHER 0x03
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#define RH_CLASS 0x20
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#define RH_VENDOR 0x40
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/* Requests: bRequest << 8 | bmRequestType */
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#define RH_GET_STATUS 0x0080
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#define RH_CLEAR_FEATURE 0x0100
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#define RH_SET_FEATURE 0x0300
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#define RH_SET_ADDRESS 0x0500
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#define RH_GET_DESCRIPTOR 0x0680
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#define RH_SET_DESCRIPTOR 0x0700
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#define RH_GET_CONFIGURATION 0x0880
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#define RH_SET_CONFIGURATION 0x0900
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#define RH_GET_STATE 0x0280
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#define RH_GET_INTERFACE 0x0A80
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#define RH_SET_INTERFACE 0x0B00
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#define RH_SYNC_FRAME 0x0C80
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/* Our Vendor Specific Request */
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#define RH_SET_EP 0x2000
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/* Hub port features */
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#define RH_PORT_CONNECTION 0x00
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#define RH_PORT_ENABLE 0x01
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#define RH_PORT_SUSPEND 0x02
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#define RH_PORT_OVER_CURRENT 0x03
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#define RH_PORT_RESET 0x04
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#define RH_PORT_POWER 0x08
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#define RH_PORT_LOW_SPEED 0x09
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#define RH_C_PORT_CONNECTION 0x10
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#define RH_C_PORT_ENABLE 0x11
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#define RH_C_PORT_SUSPEND 0x12
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#define RH_C_PORT_OVER_CURRENT 0x13
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#define RH_C_PORT_RESET 0x14
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/* Hub features */
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#define RH_C_HUB_LOCAL_POWER 0x00
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#define RH_C_HUB_OVER_CURRENT 0x01
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#define RH_DEVICE_REMOTE_WAKEUP 0x00
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#define RH_ENDPOINT_STALL 0x01
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/* Our Vendor Specific feature */
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#define RH_REMOVE_EP 0x00
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#define RH_ACK 0x01
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#define RH_REQ_ERR -1
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#define RH_NACK 0x00
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/* Field definitions for */
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#define USB_IN_command__eol__BITNR 0 /* command macros */
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#define USB_IN_command__eol__WIDTH 1
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#define USB_IN_command__eol__no 0
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#define USB_IN_command__eol__yes 1
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#define USB_IN_command__intr__BITNR 3
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#define USB_IN_command__intr__WIDTH 1
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#define USB_IN_command__intr__no 0
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#define USB_IN_command__intr__yes 1
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#define USB_IN_status__eop__BITNR 1 /* status macros. */
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#define USB_IN_status__eop__WIDTH 1
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#define USB_IN_status__eop__no 0
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#define USB_IN_status__eop__yes 1
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#define USB_IN_status__eot__BITNR 5
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#define USB_IN_status__eot__WIDTH 1
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#define USB_IN_status__eot__no 0
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#define USB_IN_status__eot__yes 1
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#define USB_IN_status__error__BITNR 6
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#define USB_IN_status__error__WIDTH 1
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#define USB_IN_status__error__no 0
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#define USB_IN_status__error__yes 1
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#define USB_IN_status__nodata__BITNR 7
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#define USB_IN_status__nodata__WIDTH 1
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#define USB_IN_status__nodata__no 0
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#define USB_IN_status__nodata__yes 1
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#define USB_IN_status__epid__BITNR 8
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#define USB_IN_status__epid__WIDTH 5
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#define USB_EP_command__eol__BITNR 0
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#define USB_EP_command__eol__WIDTH 1
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#define USB_EP_command__eol__no 0
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#define USB_EP_command__eol__yes 1
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#define USB_EP_command__eof__BITNR 1
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#define USB_EP_command__eof__WIDTH 1
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#define USB_EP_command__eof__no 0
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#define USB_EP_command__eof__yes 1
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#define USB_EP_command__intr__BITNR 3
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#define USB_EP_command__intr__WIDTH 1
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#define USB_EP_command__intr__no 0
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#define USB_EP_command__intr__yes 1
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#define USB_EP_command__enable__BITNR 4
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#define USB_EP_command__enable__WIDTH 1
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#define USB_EP_command__enable__no 0
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#define USB_EP_command__enable__yes 1
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#define USB_EP_command__hw_valid__BITNR 5
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#define USB_EP_command__hw_valid__WIDTH 1
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#define USB_EP_command__hw_valid__no 0
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#define USB_EP_command__hw_valid__yes 1
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#define USB_EP_command__epid__BITNR 8
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#define USB_EP_command__epid__WIDTH 5
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#define USB_SB_command__eol__BITNR 0 /* command macros. */
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#define USB_SB_command__eol__WIDTH 1
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#define USB_SB_command__eol__no 0
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#define USB_SB_command__eol__yes 1
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#define USB_SB_command__eot__BITNR 1
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#define USB_SB_command__eot__WIDTH 1
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#define USB_SB_command__eot__no 0
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#define USB_SB_command__eot__yes 1
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#define USB_SB_command__intr__BITNR 3
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#define USB_SB_command__intr__WIDTH 1
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#define USB_SB_command__intr__no 0
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#define USB_SB_command__intr__yes 1
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#define USB_SB_command__tt__BITNR 4
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#define USB_SB_command__tt__WIDTH 2
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#define USB_SB_command__tt__zout 0
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#define USB_SB_command__tt__in 1
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#define USB_SB_command__tt__out 2
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#define USB_SB_command__tt__setup 3
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#define USB_SB_command__rem__BITNR 8
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#define USB_SB_command__rem__WIDTH 6
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#define USB_SB_command__full__BITNR 6
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#define USB_SB_command__full__WIDTH 1
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#define USB_SB_command__full__no 0
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#define USB_SB_command__full__yes 1
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#endif
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