diff options
Diffstat (limited to 'drivers/serial/crisv10.h')
-rw-r--r-- | drivers/serial/crisv10.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/serial/crisv10.h b/drivers/serial/crisv10.h new file mode 100644 index 000000000000..1800c0e7531a --- /dev/null +++ b/drivers/serial/crisv10.h | |||
@@ -0,0 +1,137 @@ | |||
1 | /* | ||
2 | * serial.h: Arch-dep definitions for the Etrax100 serial driver. | ||
3 | * | ||
4 | * Copyright (C) 1998, 1999, 2000 Axis Communications AB | ||
5 | */ | ||
6 | |||
7 | #ifndef _ETRAX_SERIAL_H | ||
8 | #define _ETRAX_SERIAL_H | ||
9 | |||
10 | #include <linux/config.h> | ||
11 | #include <linux/circ_buf.h> | ||
12 | #include <asm/termios.h> | ||
13 | |||
14 | /* Software state per channel */ | ||
15 | |||
16 | #ifdef __KERNEL__ | ||
17 | /* | ||
18 | * This is our internal structure for each serial port's state. | ||
19 | * | ||
20 | * Many fields are paralleled by the structure used by the serial_struct | ||
21 | * structure. | ||
22 | * | ||
23 | * For definitions of the flags field, see tty.h | ||
24 | */ | ||
25 | |||
26 | #define SERIAL_RECV_DESCRIPTORS 8 | ||
27 | |||
28 | struct etrax_recv_buffer { | ||
29 | struct etrax_recv_buffer *next; | ||
30 | unsigned short length; | ||
31 | unsigned char error; | ||
32 | unsigned char pad; | ||
33 | |||
34 | unsigned char buffer[0]; | ||
35 | }; | ||
36 | |||
37 | struct e100_serial { | ||
38 | int baud; | ||
39 | volatile u8 *port; /* R_SERIALx_CTRL */ | ||
40 | u32 irq; /* bitnr in R_IRQ_MASK2 for dmaX_descr */ | ||
41 | |||
42 | /* Output registers */ | ||
43 | volatile u8 *oclrintradr; /* adr to R_DMA_CHx_CLR_INTR */ | ||
44 | volatile u32 *ofirstadr; /* adr to R_DMA_CHx_FIRST */ | ||
45 | volatile u8 *ocmdadr; /* adr to R_DMA_CHx_CMD */ | ||
46 | const volatile u8 *ostatusadr; /* adr to R_DMA_CHx_STATUS */ | ||
47 | |||
48 | /* Input registers */ | ||
49 | volatile u8 *iclrintradr; /* adr to R_DMA_CHx_CLR_INTR */ | ||
50 | volatile u32 *ifirstadr; /* adr to R_DMA_CHx_FIRST */ | ||
51 | volatile u8 *icmdadr; /* adr to R_DMA_CHx_CMD */ | ||
52 | volatile u32 *idescradr; /* adr to R_DMA_CHx_DESCR */ | ||
53 | |||
54 | int flags; /* defined in tty.h */ | ||
55 | |||
56 | u8 rx_ctrl; /* shadow for R_SERIALx_REC_CTRL */ | ||
57 | u8 tx_ctrl; /* shadow for R_SERIALx_TR_CTRL */ | ||
58 | u8 iseteop; /* bit number for R_SET_EOP for the input dma */ | ||
59 | int enabled; /* Set to 1 if the port is enabled in HW config */ | ||
60 | |||
61 | u8 dma_out_enabled:1; /* Set to 1 if DMA should be used */ | ||
62 | u8 dma_in_enabled:1; /* Set to 1 if DMA should be used */ | ||
63 | |||
64 | /* end of fields defined in rs_table[] in .c-file */ | ||
65 | u8 uses_dma_in; /* Set to 1 if DMA is used */ | ||
66 | u8 uses_dma_out; /* Set to 1 if DMA is used */ | ||
67 | u8 forced_eop; /* a fifo eop has been forced */ | ||
68 | int baud_base; /* For special baudrates */ | ||
69 | int custom_divisor; /* For special baudrates */ | ||
70 | struct etrax_dma_descr tr_descr; | ||
71 | struct etrax_dma_descr rec_descr[SERIAL_RECV_DESCRIPTORS]; | ||
72 | int cur_rec_descr; | ||
73 | |||
74 | volatile int tr_running; /* 1 if output is running */ | ||
75 | |||
76 | struct tty_struct *tty; | ||
77 | int read_status_mask; | ||
78 | int ignore_status_mask; | ||
79 | int x_char; /* xon/xoff character */ | ||
80 | int close_delay; | ||
81 | unsigned short closing_wait; | ||
82 | unsigned short closing_wait2; | ||
83 | unsigned long event; | ||
84 | unsigned long last_active; | ||
85 | int line; | ||
86 | int type; /* PORT_ETRAX */ | ||
87 | int count; /* # of fd on device */ | ||
88 | int blocked_open; /* # of blocked opens */ | ||
89 | struct circ_buf xmit; | ||
90 | struct etrax_recv_buffer *first_recv_buffer; | ||
91 | struct etrax_recv_buffer *last_recv_buffer; | ||
92 | unsigned int recv_cnt; | ||
93 | unsigned int max_recv_cnt; | ||
94 | |||
95 | struct work_struct work; | ||
96 | struct async_icount icount; /* error-statistics etc.*/ | ||
97 | struct termios normal_termios; | ||
98 | struct termios callout_termios; | ||
99 | #ifdef DECLARE_WAITQUEUE | ||
100 | wait_queue_head_t open_wait; | ||
101 | wait_queue_head_t close_wait; | ||
102 | #else | ||
103 | struct wait_queue *open_wait; | ||
104 | struct wait_queue *close_wait; | ||
105 | #endif | ||
106 | |||
107 | unsigned long char_time_usec; /* The time for 1 char, in usecs */ | ||
108 | unsigned long flush_time_usec; /* How often we should flush */ | ||
109 | unsigned long last_tx_active_usec; /* Last tx usec in the jiffies */ | ||
110 | unsigned long last_tx_active; /* Last tx time in jiffies */ | ||
111 | unsigned long last_rx_active_usec; /* Last rx usec in the jiffies */ | ||
112 | unsigned long last_rx_active; /* Last rx time in jiffies */ | ||
113 | |||
114 | int break_detected_cnt; | ||
115 | int errorcode; | ||
116 | |||
117 | #ifdef CONFIG_ETRAX_RS485 | ||
118 | struct rs485_control rs485; /* RS-485 support */ | ||
119 | #endif | ||
120 | }; | ||
121 | |||
122 | /* this PORT is not in the standard serial.h. it's not actually used for | ||
123 | * anything since we only have one type of async serial-port anyway in this | ||
124 | * system. | ||
125 | */ | ||
126 | |||
127 | #define PORT_ETRAX 1 | ||
128 | |||
129 | /* | ||
130 | * Events are used to schedule things to happen at timer-interrupt | ||
131 | * time, instead of at rs interrupt time. | ||
132 | */ | ||
133 | #define RS_EVENT_WRITE_WAKEUP 0 | ||
134 | |||
135 | #endif /* __KERNEL__ */ | ||
136 | |||
137 | #endif /* !_ETRAX_SERIAL_H */ | ||