| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/char/specialix_io8.h -- |
| 3 | * Specialix IO8+ multiport serial driver. |
| 4 | * |
| 5 | * Copyright (C) 1997 Roger Wolff (R.E.Wolff@BitWizard.nl) |
| 6 | * Copyright (C) 1994-1996 Dmitry Gorodchanin (pgmdsg@ibi.com) |
| 7 | * |
| 8 | * |
| 9 | * Specialix pays for the development and support of this driver. |
| 10 | * Please DO contact io8-linux@specialix.co.uk if you require |
| 11 | * support. |
| 12 | * |
| 13 | * This driver was developped in the BitWizard linux device |
| 14 | * driver service. If you require a linux device driver for your |
| 15 | * product, please contact devices@BitWizard.nl for a quote. |
| 16 | * |
| 17 | * This code is firmly based on the riscom/8 serial driver, |
| 18 | * written by Dmitry Gorodchanin. The specialix IO8+ card |
| 19 | * programming information was obtained from the CL-CD1865 Data |
| 20 | * Book, and Specialix document number 6200059: IO8+ Hardware |
| 21 | * Functional Specification. |
| 22 | * |
| 23 | * This program is free software; you can redistribute it and/or |
| 24 | * modify it under the terms of the GNU General Public License as |
| 25 | * published by the Free Software Foundation; either version 2 of |
| 26 | * the License, or (at your option) any later version. |
| 27 | * |
| 28 | * This program is distributed in the hope that it will be |
| 29 | * useful, but WITHOUT ANY WARRANTY; without even the implied |
| 30 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| 31 | * PURPOSE. See the GNU General Public License for more details. |
| 32 | * |
| 33 | * You should have received a copy of the GNU General Public |
| 34 | * License along with this program; if not, write to the Free |
| 35 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, |
| 36 | * USA. |
| 37 | * */ |
| 38 | |
| 39 | #ifndef __LINUX_SPECIALIX_H |
| 40 | #define __LINUX_SPECIALIX_H |
| 41 | |
| 42 | #include <linux/serial.h> |
| 43 | |
| 44 | #ifdef __KERNEL__ |
| 45 | |
| 46 | /* You can have max 4 ISA cards in one PC, and I recommend not much |
| 47 | more than a few PCI versions of the card. */ |
| 48 | |
| 49 | #define SX_NBOARD 8 |
| 50 | |
| 51 | /* NOTE: Specialix decoder recognizes 4 addresses, but only two are used.... */ |
| 52 | #define SX_IO_SPACE 4 |
| 53 | /* The PCI version decodes 8 addresses, but still only 2 are used. */ |
| 54 | #define SX_PCI_IO_SPACE 8 |
| 55 | |
| 56 | /* eight ports per board. */ |
| 57 | #define SX_NPORT 8 |
| 58 | #define SX_BOARD(line) ((line) / SX_NPORT) |
| 59 | #define SX_PORT(line) ((line) & (SX_NPORT - 1)) |
| 60 | |
| 61 | |
| 62 | #define SX_DATA_REG 0 /* Base+0 : Data register */ |
| 63 | #define SX_ADDR_REG 1 /* base+1 : Address register. */ |
| 64 | |
| 65 | #define MHz *1000000 /* I'm ashamed of myself. */ |
| 66 | |
| 67 | /* On-board oscillator frequency */ |
| 68 | #define SX_OSCFREQ (25 MHz/2) |
| 69 | /* There is a 25MHz crystal on the board, but the chip is in /2 mode */ |
| 70 | |
| 71 | |
| 72 | /* Ticks per sec. Used for setting receiver timeout and break length */ |
| 73 | #define SPECIALIX_TPS 4000 |
| 74 | |
| 75 | /* Yeah, after heavy testing I decided it must be 6. |
| 76 | * Sure, You can change it if needed. |
| 77 | */ |
| 78 | #define SPECIALIX_RXFIFO 6 /* Max. receiver FIFO size (1-8) */ |
| 79 | |
| 80 | #define SPECIALIX_MAGIC 0x0907 |
| 81 | |
| 82 | #define SX_CCR_TIMEOUT 10000 /* CCR timeout. You may need to wait upto |
| 83 | 10 milliseconds before the internal |
| 84 | processor is available again after |
| 85 | you give it a command */ |
| 86 | |
| 87 | #define SX_IOBASE1 0x100 |
| 88 | #define SX_IOBASE2 0x180 |
| 89 | #define SX_IOBASE3 0x250 |
| 90 | #define SX_IOBASE4 0x260 |
| 91 | |
| 92 | struct specialix_board { |
| 93 | unsigned long flags; |
| 94 | unsigned short base; |
| 95 | unsigned char irq; |
| 96 | //signed char count; |
| 97 | int count; |
| 98 | unsigned char DTR; |
| 99 | int reg; |
| 100 | spinlock_t lock; |
| 101 | }; |
| 102 | |
| 103 | #define SX_BOARD_PRESENT 0x00000001 |
| 104 | #define SX_BOARD_ACTIVE 0x00000002 |
| 105 | #define SX_BOARD_IS_PCI 0x00000004 |
| 106 | |
| 107 | |
| 108 | struct specialix_port { |
| 109 | int magic; |
| 110 | int baud_base; |
| 111 | int flags; |
| 112 | struct tty_struct * tty; |
| 113 | int count; |
| 114 | int blocked_open; |
| 115 | ulong event; |
| 116 | int timeout; |
| 117 | int close_delay; |
| 118 | unsigned char * xmit_buf; |
| 119 | int custom_divisor; |
| 120 | int xmit_head; |
| 121 | int xmit_tail; |
| 122 | int xmit_cnt; |
| 123 | wait_queue_head_t open_wait; |
| 124 | wait_queue_head_t close_wait; |
| 125 | struct work_struct tqueue; |
| 126 | struct work_struct tqueue_hangup; |
| 127 | short wakeup_chars; |
| 128 | short break_length; |
| 129 | unsigned short closing_wait; |
| 130 | unsigned char mark_mask; |
| 131 | unsigned char IER; |
| 132 | unsigned char MSVR; |
| 133 | unsigned char COR2; |
| 134 | unsigned long overrun; |
| 135 | unsigned long hits[10]; |
| 136 | spinlock_t lock; |
| 137 | }; |
| 138 | |
| 139 | #endif /* __KERNEL__ */ |
| 140 | #endif /* __LINUX_SPECIALIX_H */ |
| 141 | |
| 142 | |
| 143 | |
| 144 | |
| 145 | |
| 146 | |
| 147 | |
| 148 | |
| 149 | |