tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#define SERIAL_CPM_MAJOR 204
21#define SERIAL_CPM_MINOR 46
22
23#define IS_SMC(pinfo) (pinfo->flags & FLAG_SMC)
24#define IS_DISCARDING(pinfo) (pinfo->flags & FLAG_DISCARDING)
25#define FLAG_DISCARDING 0x00000004 /* when set, don't discard */
26#define FLAG_SMC 0x00000002
27#define FLAG_CONSOLE 0x00000001
28
29#define UART_SMC1 0
30#define UART_SMC2 1
31#define UART_SCC1 2
32#define UART_SCC2 3
33#define UART_SCC3 4
34#define UART_SCC4 5
35
36#define UART_NR 6
37
38#define RX_NUM_FIFO 4
39#define RX_BUF_SIZE 32
40#define TX_NUM_FIFO 4
41#define TX_BUF_SIZE 32
42
43struct uart_cpm_port {
44 struct uart_port port;
45 u16 rx_nrfifos;
46 u16 rx_fifosize;
47 u16 tx_nrfifos;
48 u16 tx_fifosize;
49 smc_t *smcp;
50 smc_uart_t *smcup;
51 scc_t *sccp;
52 scc_uart_t *sccup;
53 volatile cbd_t *rx_bd_base;
54 volatile cbd_t *rx_cur;
55 volatile cbd_t *tx_bd_base;
56 volatile cbd_t *tx_cur;
57 unsigned char *tx_buf;
58 unsigned char *rx_buf;
59 u32 flags;
60 void (*set_lineif)(struct uart_cpm_port *);
61 u8 brg;
62 uint dp_addr;
63 void *mem_addr;
64 dma_addr_t dma_addr;
65 /* helpers */
66 int baud;
67 int bits;
68 /* Keep track of 'odd' SMC2 wirings */
69 int is_portb;
70};
71
72extern int cpm_uart_port_map[UART_NR];
73extern int cpm_uart_nr;
74extern struct uart_cpm_port cpm_uart_ports[UART_NR];
75
76/* these are located in their respective files */
77void cpm_line_cr_cmd(int line, int cmd);
78int cpm_uart_init_portdesc(void);
79int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con);
80void cpm_uart_freebuf(struct uart_cpm_port *pinfo);
81
82void smc1_lineif(struct uart_cpm_port *pinfo);
83void smc2_lineif(struct uart_cpm_port *pinfo);
84void scc1_lineif(struct uart_cpm_port *pinfo);
85void scc2_lineif(struct uart_cpm_port *pinfo);
86void scc3_lineif(struct uart_cpm_port *pinfo);
87void scc4_lineif(struct uart_cpm_port *pinfo);
88
89#endif /* CPM_UART_H */