1 /* $FreeBSD$ */ 2 /*- 3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #ifndef _USB_TRANSFER_H_ 28 #define _USB_TRANSFER_H_ 29 30 /* 31 * The following structure defines the messages that is used to signal 32 * the "done_p" USB process. 33 */ 34 struct usb_done_msg { 35 struct usb_proc_msg hdr; 36 struct usb_xfer_root *xroot; 37 }; 38 39 #define USB_DMATAG_TO_XROOT(dpt) \ 40 ((struct usb_xfer_root *)( \ 41 ((uint8_t *)(dpt)) - \ 42 ((uint8_t *)&((struct usb_xfer_root *)0)->dma_parent_tag))) 43 44 /* 45 * The following structure is used to keep information about memory 46 * that should be automatically freed at the moment all USB transfers 47 * have been freed. 48 */ 49 struct usb_xfer_root { 50 struct usb_dma_parent_tag dma_parent_tag; 51 #if USB_HAVE_BUSDMA 52 struct usb_xfer_queue dma_q; 53 #endif 54 struct usb_xfer_queue done_q; 55 struct usb_done_msg done_m[2]; 56 struct cv cv_drain; 57 58 struct usb_process *done_p; /* pointer to callback process */ 59 void *memory_base; 60 struct mtx *xfer_mtx; /* cannot be changed during operation */ 61 #if USB_HAVE_BUSDMA 62 struct usb_page_cache *dma_page_cache_start; 63 struct usb_page_cache *dma_page_cache_end; 64 #endif 65 struct usb_page_cache *xfer_page_cache_start; 66 struct usb_page_cache *xfer_page_cache_end; 67 struct usb_bus *bus; /* pointer to USB bus (cached) */ 68 struct usb_device *udev; /* pointer to USB device */ 69 70 usb_size_t memory_size; 71 usb_size_t setup_refcount; 72 #if USB_HAVE_BUSDMA 73 usb_frcount_t dma_nframes; /* number of page caches to load */ 74 usb_frcount_t dma_currframe; /* currect page cache number */ 75 usb_frlength_t dma_frlength_0; /* length of page cache zero */ 76 uint8_t dma_error; /* set if virtual memory could not be 77 * loaded */ 78 #endif 79 uint8_t done_sleep; /* set if done thread is sleeping */ 80 }; 81 82 /* 83 * The following structure is used when setting up an array of USB 84 * transfers. 85 */ 86 struct usb_setup_params { 87 struct usb_dma_tag *dma_tag_p; 88 struct usb_page *dma_page_ptr; 89 struct usb_page_cache *dma_page_cache_ptr; /* these will be 90 * auto-freed */ 91 struct usb_page_cache *xfer_page_cache_ptr; /* these will not be 92 * auto-freed */ 93 struct usb_device *udev; 94 struct usb_xfer *curr_xfer; 95 const struct usb_config *curr_setup; 96 const struct usb_pipe_methods *methods; 97 void *buf; 98 usb_frlength_t *xfer_length_ptr; 99 100 usb_size_t size[7]; 101 usb_frlength_t bufsize; 102 usb_frlength_t bufsize_max; 103 104 uint32_t hc_max_frame_size; 105 uint16_t hc_max_packet_size; 106 uint8_t hc_max_packet_count; 107 enum usb_dev_speed speed; 108 uint8_t dma_tag_max; 109 usb_error_t err; 110 }; 111 112 /* function prototypes */ 113 114 uint8_t usbd_transfer_setup_sub_malloc(struct usb_setup_params *parm, 115 struct usb_page_cache **ppc, usb_size_t size, usb_size_t align, 116 usb_size_t count); 117 void usb_dma_delay_done_cb(struct usb_xfer *); 118 void usb_command_wrapper(struct usb_xfer_queue *pq, 119 struct usb_xfer *xfer); 120 void usbd_pipe_enter(struct usb_xfer *xfer); 121 void usbd_pipe_start(struct usb_xfer_queue *pq); 122 void usbd_transfer_dequeue(struct usb_xfer *xfer); 123 void usbd_transfer_done(struct usb_xfer *xfer, usb_error_t error); 124 void usbd_transfer_enqueue(struct usb_xfer_queue *pq, 125 struct usb_xfer *xfer); 126 void usbd_transfer_setup_sub(struct usb_setup_params *parm); 127 void usbd_ctrl_transfer_setup(struct usb_device *udev); 128 void usbd_clear_stall_locked(struct usb_device *udev, 129 struct usb_endpoint *ep); 130 void usbd_clear_data_toggle(struct usb_device *udev, 131 struct usb_endpoint *ep); 132 usb_callback_t usbd_do_request_callback; 133 usb_callback_t usb_handle_request_callback; 134 usb_callback_t usb_do_clear_stall_callback; 135 void usbd_transfer_timeout_ms(struct usb_xfer *xfer, 136 void (*cb) (void *arg), usb_timeout_t ms); 137 usb_timeout_t usbd_get_dma_delay(struct usb_device *udev); 138 void usbd_transfer_power_ref(struct usb_xfer *xfer, int val); 139 140 #endif /* _USB_TRANSFER_H_ */ 141