| /* USB buffer library |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA |
| */ |
| #pragma once |
| |
| #include <osmocom/core/linuxlist.h> |
| #include <osmocom/core/msgb.h> |
| |
| /* buffered USB endpoint (with queue of msgb) */ |
| struct usb_buffered_ep { |
| /* endpoint number */ |
| uint8_t ep; |
| /* OUT endpoint (1) or IN/IRQ (0)? */ |
| uint8_t out_from_host; |
| /* currently any transfer in progress? */ |
| volatile uint32_t in_progress; |
| /* Tx queue (IN) / Rx queue (OUT) */ |
| struct llist_head queue; |
| }; |
| |
| struct msgb *usb_buf_alloc(uint8_t ep); |
| void usb_buf_free(struct msgb *msg); |
| int usb_buf_submit(struct msgb *msg); |
| struct llist_head *usb_get_queue(uint8_t ep); |
| int usb_drain_queue(uint8_t ep); |
| |
| void usb_buf_init(void); |
| struct usb_buffered_ep *usb_get_buf_ep(uint8_t ep); |
| |
| int usb_refill_to_host(uint8_t ep); |
| int usb_refill_from_host(uint8_t ep); |