2 * linux/drivers/serial/cpm_uart.h
4 * Driver for CPM (SCC/SMC) serial ports
6 * Copyright (C) 2004 Freescale Semiconductor, Inc.
8 * 2006 (c) MontaVista Software, Inc.
9 * Vitaly Bordug <vbordug@ru.mvista.com>
11 * This file is licensed under the terms of the GNU General Public License
12 * version 2. This program is licensed "as is" without any warranty of any
13 * kind, whether express or implied.
19 #include <linux/platform_device.h>
20 #include <linux/fs_uart_pd.h>
22 #if defined(CONFIG_CPM2)
23 #include "cpm_uart_cpm2.h"
24 #elif defined(CONFIG_8xx)
25 #include "cpm_uart_cpm1.h"
28 #define SERIAL_CPM_MAJOR 204
29 #define SERIAL_CPM_MINOR 46
31 #define IS_SMC(pinfo) (pinfo->flags & FLAG_SMC)
32 #define IS_DISCARDING(pinfo) (pinfo->flags & FLAG_DISCARDING)
33 #define FLAG_DISCARDING 0x00000004 /* when set, don't discard */
34 #define FLAG_SMC 0x00000002
35 #define FLAG_CONSOLE 0x00000001
37 #define UART_SMC1 fsid_smc1_uart
38 #define UART_SMC2 fsid_smc2_uart
39 #define UART_SCC1 fsid_scc1_uart
40 #define UART_SCC2 fsid_scc2_uart
41 #define UART_SCC3 fsid_scc3_uart
42 #define UART_SCC4 fsid_scc4_uart
44 #define UART_NR fs_uart_nr
47 #define RX_BUF_SIZE 32
49 #define TX_BUF_SIZE 32
51 #define SCC_WAIT_CLOSING 100
53 struct uart_cpm_port {
54 struct uart_port port;
63 volatile cbd_t *rx_bd_base;
64 volatile cbd_t *rx_cur;
65 volatile cbd_t *tx_bd_base;
66 volatile cbd_t *tx_cur;
67 unsigned char *tx_buf;
68 unsigned char *rx_buf;
70 void (*set_lineif)(struct uart_cpm_port *);
79 /* Keep track of 'odd' SMC2 wirings */
81 /* wait on close if needed */
85 extern int cpm_uart_port_map[UART_NR];
86 extern int cpm_uart_nr;
87 extern struct uart_cpm_port cpm_uart_ports[UART_NR];
89 /* these are located in their respective files */
90 void cpm_line_cr_cmd(int line, int cmd);
91 int cpm_uart_init_portdesc(void);
92 int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con);
93 void cpm_uart_freebuf(struct uart_cpm_port *pinfo);
95 void smc1_lineif(struct uart_cpm_port *pinfo);
96 void smc2_lineif(struct uart_cpm_port *pinfo);
97 void scc1_lineif(struct uart_cpm_port *pinfo);
98 void scc2_lineif(struct uart_cpm_port *pinfo);
99 void scc3_lineif(struct uart_cpm_port *pinfo);
100 void scc4_lineif(struct uart_cpm_port *pinfo);
103 virtual to phys transtalion
105 static inline unsigned long cpu2cpm_addr(void* addr, struct uart_cpm_port *pinfo)
110 if (likely((val >= (u32)pinfo->mem_addr)) &&
111 (val<((u32)pinfo->mem_addr + pinfo->mem_size))) {
112 offset = val - (u32)pinfo->mem_addr;
113 return pinfo->dma_addr+offset;
115 /* something nasty happened */
120 static inline void *cpm2cpu_addr(unsigned long addr, struct uart_cpm_port *pinfo)
125 if (likely((val >= pinfo->dma_addr) &&
126 (val<(pinfo->dma_addr + pinfo->mem_size)))) {
127 offset = val - (u32)pinfo->dma_addr;
128 return (void*)(pinfo->mem_addr+offset);
130 /* something nasty happened */
136 #endif /* CPM_UART_H */