| 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 |
| 112 | |
