drivers/usb/musb/cppi41_dma.h

   1 /*
   2  * Copyright (C) 2005-2006 by Texas Instruments
   3  * Copyright (c) 2008, MontaVista Software, Inc. <source@mvista.com>
   4  *
   5  * This program is free software; you can distribute it and/or modify it
   6  * under the terms of the GNU General Public License (Version 2) as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  17  *
  18  */
  19
  20 #ifndef _CPPI41_DMA_H_
  21 #define _CPPI41_DMA_H_
  22 #include <plat/usb.h>
  23
  24 /**
  25  * struct usb_cppi41_info - CPPI 4.1 USB implementation details
  26  * @dma_block:  DMA block number
  27  * @ep_dma_ch:  DMA channel numbers used for EPs 1 .. Max_EP
  28  * @q_mgr:      queue manager number
  29  * @num_tx_comp_q: number of the Tx completion queues
  30  * @num_rx_comp_q: number of the Rx queues
  31  * @tx_comp_q:  pointer to the list of the Tx completion queue numbers
  32  * @rx_comp_q:  pointer to the list of the Rx queue numbers
  33  */
  34 struct usb_cppi41_info {
  35         u8 dma_block;
  36         u8 ep_dma_ch[USB_CPPI41_NUM_CH];
  37         u8 q_mgr;
  38         u8 num_tx_comp_q;
  39         u8 num_rx_comp_q;
  40         const u16 *tx_comp_q;
  41         const u16 *rx_comp_q;
  42 };
  43
  44 extern const struct usb_cppi41_info usb_cppi41_info;
  45
  46 /**
  47  * cppi41_completion - Tx/Rx completion queue interrupt handling hook
  48  * @musb:       the controller
  49  * @rx:         bitmask having bit N set if Rx queue N is not empty
  50  * @tx:         bitmask having bit N set if Tx completion queue N is not empty
  51  */
  52 void cppi41_completion(struct musb *musb, u32 rx, u32 tx);
  53
  54 /**
  55  * cppi41_disable_sched_rx
  56  */
  57 int cppi41_disable_sched_rx(void);
  58
  59 /**
  60  * cppi41_enable_sched_rx
  61  */
  62 int cppi41_enable_sched_rx(void);
  63 #endif  /* _CPPI41_DMA_H_ */