diff options
| author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
|---|---|---|
| committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
| commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
| tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /include/linux/serialP.h | |
| parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) | |
Diffstat (limited to 'include/linux/serialP.h')
| -rw-r--r-- | include/linux/serialP.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/include/linux/serialP.h b/include/linux/serialP.h new file mode 100644 index 00000000000..e811a615f69 --- /dev/null +++ b/include/linux/serialP.h | |||
| @@ -0,0 +1,142 @@ | |||
| 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/termios.h> | ||
| 23 | #include <linux/workqueue.h> | ||
| 24 | #include <linux/interrupt.h> | ||
| 25 | #include <linux/circ_buf.h> | ||
| 26 | #include <linux/wait.h> | ||
| 27 | |||
| 28 | struct serial_state { | ||
| 29 | int magic; | ||
| 30 | int baud_base; | ||
| 31 | unsigned long port; | ||
| 32 | int irq; | ||
| 33 | int flags; | ||
| 34 | int hub6; | ||
| 35 | int type; | ||
| 36 | int line; | ||
| 37 | int revision; /* Chip revision (950) */ | ||
| 38 | int xmit_fifo_size; | ||
| 39 | int custom_divisor; | ||
| 40 | int count; | ||
| 41 | u8 *iomem_base; | ||
| 42 | u16 iomem_reg_shift; | ||
| 43 | unsigned short close_delay; | ||
| 44 | unsigned short closing_wait; /* time to wait before closing */ | ||
| 45 | struct async_icount icount; | ||
| 46 | int io_type; | ||
| 47 | struct async_struct *info; | ||
| 48 | struct pci_dev *dev; | ||
| 49 | }; | ||
| 50 | |||
| 51 | struct async_struct { | ||
| 52 | int magic; | ||
| 53 | unsigned long port; | ||
| 54 | int hub6; | ||
| 55 | int flags; | ||
| 56 | int xmit_fifo_size; | ||
| 57 | struct serial_state *state; | ||
| 58 | struct tty_struct *tty; | ||
| 59 | int read_status_mask; | ||
| 60 | int ignore_status_mask; | ||
| 61 | int timeout; | ||
| 62 | int quot; | ||
| 63 | int x_char; /* xon/xoff character */ | ||
| 64 | int close_delay; | ||
| 65 | unsigned short closing_wait; | ||
| 66 | unsigned short closing_wait2; /* obsolete */ | ||
| 67 | int IER; /* Interrupt Enable Register */ | ||
| 68 | int MCR; /* Modem control register */ | ||
| 69 | int LCR; /* Line control register */ | ||
| 70 | int ACR; /* 16950 Additional Control Reg. */ | ||
| 71 | unsigned long event; | ||
| 72 | unsigned long last_active; | ||
| 73 | int line; | ||
| 74 | int blocked_open; /* # of blocked opens */ | ||
| 75 | struct circ_buf xmit; | ||
| 76 | spinlock_t xmit_lock; | ||
| 77 | u8 *iomem_base; | ||
| 78 | u16 iomem_reg_shift; | ||
| 79 | int io_type; | ||
| 80 | struct work_struct work; | ||
| 81 | struct tasklet_struct tlet; | ||
| 82 | #ifdef DECLARE_WAITQUEUE | ||
| 83 | wait_queue_head_t open_wait; | ||
| 84 | wait_queue_head_t close_wait; | ||
| 85 | wait_queue_head_t delta_msr_wait; | ||
| 86 | #else | ||
| 87 | struct wait_queue *open_wait; | ||
| 88 | struct wait_queue *close_wait; | ||
| 89 | struct wait_queue *delta_msr_wait; | ||
| 90 | #endif | ||
| 91 | struct async_struct *next_port; /* For the linked list */ | ||
| 92 | struct async_struct *prev_port; | ||
| 93 | }; | ||
| 94 | |||
| 95 | #define CONFIGURED_SERIAL_PORT(info) ((info)->port || ((info)->iomem_base)) | ||
| 96 | |||
| 97 | #define SERIAL_MAGIC 0x5301 | ||
| 98 | #define SSTATE_MAGIC 0x5302 | ||
| 99 | |||
| 100 | /* | ||
| 101 | * Events are used to schedule things to happen at timer-interrupt | ||
| 102 | * time, instead of at rs interrupt time. | ||
| 103 | */ | ||
| 104 | #define RS_EVENT_WRITE_WAKEUP 0 | ||
| 105 | |||
| 106 | /* | ||
| 107 | * Multiport serial configuration structure --- internal structure | ||
| 108 | */ | ||
| 109 | struct rs_multiport_struct { | ||
| 110 | int port1; | ||
| 111 | unsigned char mask1, match1; | ||
| 112 | int port2; | ||
| 113 | unsigned char mask2, match2; | ||
| 114 | int port3; | ||
| 115 | unsigned char mask3, match3; | ||
| 116 | int port4; | ||
| 117 | unsigned char mask4, match4; | ||
| 118 | int port_monitor; | ||
| 119 | }; | ||
| 120 | |||
| 121 | #if defined(__alpha__) && !defined(CONFIG_PCI) | ||
| 122 | /* | ||
| 123 | * Digital did something really horribly wrong with the OUT1 and OUT2 | ||
| 124 | * lines on at least some ALPHA's. The failure mode is that if either | ||
| 125 | * is cleared, the machine locks up with endless interrupts. | ||
| 126 | * | ||
| 127 | * This is still used by arch/mips/au1000/common/serial.c for some weird | ||
| 128 | * reason (mips != alpha!) | ||
| 129 | */ | ||
| 130 | #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1) | ||
| 131 | #elif defined(CONFIG_SBC8560) | ||
| 132 | /* | ||
| 133 | * WindRiver did something similarly broken on their SBC8560 board. The | ||
| 134 | * UART tristates its IRQ output while OUT2 is clear, but they pulled | ||
| 135 | * the interrupt line _up_ instead of down, so if we register the IRQ | ||
| 136 | * while the UART is in that state, we die in an IRQ storm. */ | ||
| 137 | #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2) | ||
| 138 | #else | ||
| 139 | #define ALPHA_KLUDGE_MCR 0 | ||
| 140 | #endif | ||
| 141 | |||
| 142 | #endif /* _LINUX_SERIAL_H */ | ||