target/linux/ubicom32/files/arch/ubicom32/mach-common/usb_tio.h

   1 /*
   2  * arch/ubicom32/mach-common/usb_tio.h
   3  *   Definitions for usb_tio.c
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  *
   7  * This file is part of the Ubicom32 Linux Kernel Port.
   8  *
   9  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  10  * it and/or modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation, either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  15  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  16  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  * the GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with the Ubicom32 Linux Kernel Port.  If not,
  21  * see <http://www.gnu.org/licenses/>.
  22  *
  23  * Ubicom32 implementation derived from (with many thanks):
  24  *   arch/m68knommu
  25  *   arch/blackfin
  26  *   arch/parisc
  27  */
  28
  29 #include <linux/version.h>
  30 #include <linux/kernel.h>
  31 #include <linux/types.h>
  32 #include <linux/errno.h>
  33 #include <linux/err.h>
  34 #include <asm/devtree.h>
  35 #include <asm/ip5000.h>
  36
  37 #ifndef _USB_TIO_H
  38 #define _USB_TIO_H
  39
  40 #undef  USB_TIO_DEBUG
  41
  42 #define USB_TIO_REQUEST_MAGIC1  0x2307
  43 #define USB_TIO_REQUEST_MAGIC2  0x0789
  44 #if defined(USB_TIO_DEBUG)
  45 #define USB_TIO_REQUEST_VERIFY_MAGIC(req)       usb_tio_request_verify_magic(req)
  46 #define USB_TIO_REQUEST_SET_MAGIC(req)          usb_tio_request_set_magic(req)
  47 #define USB_TIO_REQUEST_CLEAR_MAGIC(req)        usb_tio_request_clear_magic(req)
  48 #else
  49 #define USB_TIO_REQUEST_VERIFY_MAGIC(req)
  50 #define USB_TIO_REQUEST_SET_MAGIC(req)          usb_tio_request_set_magic(req)
  51 #define USB_TIO_REQUEST_CLEAR_MAGIC(req)
  52 #endif
  53
  54 enum USB_TIO_status {
  55         USB_TIO_OK,
  56         USB_TIO_ERROR,
  57         USB_TIO_ERROR_COMMIT,
  58 };
  59
  60 enum USB_TIO_cmds {
  61         USB_TIO_READ16_SYNC,
  62         USB_TIO_READ8_SYNC,
  63         USB_TIO_READ_FIFO_SYNC,
  64
  65         USB_TIO_WRITE16_ASYNC,
  66         USB_TIO_WRITE8_ASYNC,
  67         USB_TIO_WRITE_FIFO_ASYNC,
  68
  69         USB_TIO_WRITE16_SYNC,
  70         USB_TIO_WRITE8_SYNC,
  71         USB_TIO_WRITE_FIFO_SYNC,
  72
  73 };
  74
  75 enum USB_TIO_state {
  76         USB_TIO_NORMAL,
  77         USB_TIO_DMA_SETUP,
  78 };
  79
  80 struct usb_tio_request {
  81         volatile u32_t address;
  82         union {
  83                 volatile u32_t data;
  84                 volatile u32_t buffer;
  85         };
  86         volatile u16_t cmd;
  87         const volatile u16_t status;
  88         volatile u32_t transfer_length;
  89         volatile u32_t thread_mask;
  90         volatile u16_t magic;
  91 };
  92
  93 struct usbtio_node {
  94         struct devtree_node dn;
  95         volatile struct usb_tio_request * volatile pdesc;
  96         struct usb_tio_request  request;
  97         volatile u32_t usb_vp_config;
  98         volatile u32_t usb_vp_control;
  99         const volatile u32_t usb_vp_status;
 100         volatile u16_t usb_vp_hw_int_tx;
 101         volatile u16_t usb_vp_hw_int_rx;
 102         volatile u8_t  usb_vp_hw_int_usb;
 103         volatile u8_t usb_vp_hw_int_mask_usb;
 104         volatile u16_t usb_vp_hw_int_mask_tx;
 105         volatile u16_t usb_vp_hw_int_mask_rx;
 106
 107 };
 108
 109 extern struct usbtio_node *usb_node;
 110 extern void ubi32_usb_init(void);
 111 #endif