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[linux-2.6.git] / drivers / serial / cpm_uart / cpm_uart.h
1 /*
2  *  linux/drivers/serial/cpm_uart.h
3  *
4  *  Driver for CPM (SCC/SMC) serial ports
5  *
6  *  Copyright (C) 2004 Freescale Semiconductor, Inc.
7  *
8  */
9 #ifndef CPM_UART_H
10 #define CPM_UART_H
11
12 #include <linux/config.h>
13
14 #if defined(CONFIG_CPM2)
15 #include "cpm_uart_cpm2.h"
16 #elif defined(CONFIG_8xx)
17 #include "cpm_uart_cpm1.h"
18 #endif
19
20 #ifndef CONFIG_SERIAL_8250
21 #define SERIAL_CPM_MAJOR        TTY_MAJOR
22 #define SERIAL_CPM_MINOR        64
23 #else
24 #define SERIAL_CPM_MAJOR        204
25 #define SERIAL_CPM_MINOR        42
26 #endif
27
28 #define IS_SMC(pinfo)           (pinfo->flags & FLAG_SMC)
29 #define IS_DISCARDING(pinfo)    (pinfo->flags & FLAG_DISCARDING)
30 #define FLAG_DISCARDING 0x00000004      /* when set, don't discard */
31 #define FLAG_SMC        0x00000002
32 #define FLAG_CONSOLE    0x00000001
33
34 #define UART_SMC1       0
35 #define UART_SMC2       1
36 #define UART_SCC1       2
37 #define UART_SCC2       3
38 #define UART_SCC3       4
39 #define UART_SCC4       5
40
41 #define UART_NR 6
42
43 #define RX_NUM_FIFO     4
44 #define RX_BUF_SIZE     32
45 #define TX_NUM_FIFO     4
46 #define TX_BUF_SIZE     32
47
48 struct uart_cpm_port {
49         struct uart_port        port;
50         u16                     rx_nrfifos;     
51         u16                     rx_fifosize;
52         u16                     tx_nrfifos;     
53         u16                     tx_fifosize;
54         smc_t                   *smcp;  
55         smc_uart_t              *smcup;
56         scc_t                   *sccp;
57         scc_uart_t              *sccup;
58         volatile cbd_t          *rx_bd_base;
59         volatile cbd_t          *rx_cur;
60         volatile cbd_t          *tx_bd_base;
61         volatile cbd_t          *tx_cur;
62         unsigned char           *tx_buf;
63         unsigned char           *rx_buf;
64         u32                     flags;
65         void                    (*set_lineif)(struct uart_cpm_port *);
66         u8                      brg;
67         uint                     dp_addr;
68         void                    *mem_addr;
69         dma_addr_t               dma_addr;
70         /* helpers */
71         int                      baud;
72         int                      bits;
73 };
74
75 extern int cpm_uart_port_map[UART_NR];
76 extern int cpm_uart_nr;
77 extern struct uart_cpm_port cpm_uart_ports[UART_NR];
78
79 /* these are located in their respective files */
80 void cpm_line_cr_cmd(int line, int cmd);
81 int cpm_uart_init_portdesc(void);
82 int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con);
83 void cpm_uart_freebuf(struct uart_cpm_port *pinfo);
84
85 void smc1_lineif(struct uart_cpm_port *pinfo);
86 void smc2_lineif(struct uart_cpm_port *pinfo);
87 void scc1_lineif(struct uart_cpm_port *pinfo);
88 void scc2_lineif(struct uart_cpm_port *pinfo);
89 void scc3_lineif(struct uart_cpm_port *pinfo);
90 void scc4_lineif(struct uart_cpm_port *pinfo);
91
92 #endif /* CPM_UART_H */