1 /* 2 * Private header file for the (dumb) serial driver 3 * 4 * Copyright (C) 1997 by Theodore Ts'o. 5 * 6 * Redistribution of this file is permitted under the terms of the GNU 7 * Public License (GPL) 8 */ 9 10 #ifndef _LINUX_SERIALP_H 11 #define _LINUX_SERIALP_H 12 13 /* 14 * This is our internal structure for each serial port's state. 15 * 16 * Many fields are paralleled by the structure used by the serial_struct 17 * structure. 18 * 19 * For definitions of the flags field, see tty.h 20 */ 21 22 #include <linux/config.h> 23 #include <linux/termios.h> 24 #include <linux/tqueue.h> 25 #include <linux/circ_buf.h> 26 #include <linux/wait.h> 27 #if (LINUX_VERSION_CODE < 0x020300) 28 /* Unfortunate, but Linux 2.2 needs async_icount defined here and 29 * it got moved in 2.3 */ 30 #include <linux/serial.h> 31 #endif 32 33 struct serial_state { 34 int magic; 35 int baud_base; 36 unsigned long port; 37 int irq; 38 int flags; 39 int hub6; 40 int type; 41 int line; 42 int revision; /* Chip revision (950) */ 43 int xmit_fifo_size; 44 int custom_divisor; 45 int count; 46 u8 *iomem_base; 47 u16 iomem_reg_shift; 48 unsigned short close_delay; 49 unsigned short closing_wait; /* time to wait before closing */ 50 struct async_icount icount; 51 struct termios normal_termios; 52 struct termios callout_termios; 53 int io_type; 54 struct async_struct *info; 55 struct pci_dev *dev; 56 }; 57 58 struct async_struct { 59 int magic; 60 unsigned long port; 61 int hub6; 62 int flags; 63 int xmit_fifo_size; 64 struct serial_state *state; 65 struct tty_struct *tty; 66 int read_status_mask; 67 int ignore_status_mask; 68 int timeout; 69 int quot; 70 int x_char; /* xon/xoff character */ 71 int close_delay; 72 unsigned short closing_wait; 73 unsigned short closing_wait2; 74 int IER; /* Interrupt Enable Register */ 75 int MCR; /* Modem control register */ 76 int LCR; /* Line control register */ 77 int ACR; /* 16950 Additional Control Reg. */ 78 unsigned long event; 79 unsigned long last_active; 80 int line; 81 int blocked_open; /* # of blocked opens */ 82 long session; /* Session of opening process */ 83 long pgrp; /* pgrp of opening process */ 84 struct circ_buf xmit; 85 spinlock_t xmit_lock; 86 u8 *iomem_base; 87 u16 iomem_reg_shift; 88 int io_type; 89 struct tq_struct tqueue; 90 #ifdef DECLARE_WAITQUEUE 91 wait_queue_head_t open_wait; 92 wait_queue_head_t close_wait; 93 wait_queue_head_t delta_msr_wait; 94 #else 95 struct wait_queue *open_wait; 96 struct wait_queue *close_wait; 97 struct wait_queue *delta_msr_wait; 98 #endif 99 struct async_struct *next_port; /* For the linked list */ 100 struct async_struct *prev_port; 101 }; 102 103 #define CONFIGURED_SERIAL_PORT(info) ((info)->port || ((info)->iomem_base)) 104 105 #define SERIAL_MAGIC 0x5301 106 #define SSTATE_MAGIC 0x5302 107 108 /* 109 * Events are used to schedule things to happen at timer-interrupt 110 * time, instead of at rs interrupt time. 111 */ 112 #define RS_EVENT_WRITE_WAKEUP 0 113 114 /* 115 * Multiport serial configuration structure --- internal structure 116 */ 117 struct rs_multiport_struct { 118 int port1; 119 unsigned char mask1, match1; 120 int port2; 121 unsigned char mask2, match2; 122 int port3; 123 unsigned char mask3, match3; 124 int port4; 125 unsigned char mask4, match4; 126 int port_monitor; 127 }; 128 129 #if defined(__alpha__) && !defined(CONFIG_PCI) 130 /* 131 * Digital did something really horribly wrong with the OUT1 and OUT2 132 * lines on at least some ALPHA's. The failure mode is that if either 133 * is cleared, the machine locks up with endless interrupts. 134 */ 135 #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1) 136 #else 137 #define ALPHA_KLUDGE_MCR 0 138 #endif 139 140 /* 141 * Structures and definitions for PCI support 142 */ 143 struct pci_dev; 144 struct pci_board { 145 int flags; 146 int num_ports; 147 int base_baud; 148 int uart_offset; 149 int reg_shift; 150 int (*init_fn)(struct pci_dev *dev, struct pci_board *board, 151 int enable); 152 int first_uart_offset; 153 }; 154 155 struct pci_board_inst { 156 struct pci_board board; 157 struct pci_dev *dev; 158 }; 159 160 extern int pci_siig10x_fn(struct pci_dev *dev, struct pci_board *board, int enable); 161 extern int pci_siig20x_fn(struct pci_dev *dev, struct pci_board *board, int enable); 162 163 #ifndef PCI_ANY_ID 164 #define PCI_ANY_ID (~0) 165 #endif 166 167 #define SPCI_FL_BASE_MASK 0x0007 168 #define SPCI_FL_BASE0 0x0000 169 #define SPCI_FL_BASE1 0x0001 170 #define SPCI_FL_BASE2 0x0002 171 #define SPCI_FL_BASE3 0x0003 172 #define SPCI_FL_BASE4 0x0004 173 #define SPCI_FL_GET_BASE(x) (x & SPCI_FL_BASE_MASK) 174 175 #define SPCI_FL_IRQ_MASK (0x0007 << 4) 176 #define SPCI_FL_IRQBASE0 (0x0000 << 4) 177 #define SPCI_FL_IRQBASE1 (0x0001 << 4) 178 #define SPCI_FL_IRQBASE2 (0x0002 << 4) 179 #define SPCI_FL_IRQBASE3 (0x0003 << 4) 180 #define SPCI_FL_IRQBASE4 (0x0004 << 4) 181 #define SPCI_FL_GET_IRQBASE(x) ((x & SPCI_FL_IRQ_MASK) >> 4) 182 183 /* Use successive BARs (PCI base address registers), 184 else use offset into some specified BAR */ 185 #define SPCI_FL_BASE_TABLE 0x0100 186 187 /* Use successive entries in the irq resource table */ 188 #define SPCI_FL_IRQ_TABLE 0x0200 189 190 /* Use the irq resource table instead of dev->irq */ 191 #define SPCI_FL_IRQRESOURCE 0x0400 192 193 /* Use the Base address register size to cap number of ports */ 194 #define SPCI_FL_REGION_SZ_CAP 0x0800 195 196 /* Do not use irq sharing for this device */ 197 #define SPCI_FL_NO_SHIRQ 0x1000 198 199 /* This is a PNP device */ 200 #define SPCI_FL_ISPNP 0x2000 201 202 #define SPCI_FL_PNPDEFAULT (SPCI_FL_IRQRESOURCE|SPCI_FL_ISPNP) 203 204 #endif /* _LINUX_SERIAL_H */ 205