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
60 #define NUM_GPIOS (GPIO_RI+1)
62 struct uart_cpm_port
{
63 struct uart_port port
;
69 smc_uart_t __iomem
*smcup
;
71 scc_uart_t __iomem
*sccup
;
72 cbd_t __iomem
*rx_bd_base
;
73 cbd_t __iomem
*rx_cur
;
74 cbd_t __iomem
*tx_bd_base
;
75 cbd_t __iomem
*tx_cur
;
76 unsigned char *tx_buf
;
77 unsigned char *rx_buf
;
85 /* wait on close if needed */
87 /* value to combine with opcode to form cpm command */
92 extern int cpm_uart_nr
;
93 extern struct uart_cpm_port cpm_uart_ports
[UART_NR
];
95 /* these are located in their respective files */
96 void cpm_line_cr_cmd(struct uart_cpm_port
*port
, int cmd
);
97 void __iomem
*cpm_uart_map_pram(struct uart_cpm_port
*port
,
98 struct device_node
*np
);
99 void cpm_uart_unmap_pram(struct uart_cpm_port
*port
, void __iomem
*pram
);
100 int cpm_uart_init_portdesc(void);
101 int cpm_uart_allocbuf(struct uart_cpm_port
*pinfo
, unsigned int is_con
);
102 void cpm_uart_freebuf(struct uart_cpm_port
*pinfo
);
104 void smc1_lineif(struct uart_cpm_port
*pinfo
);
105 void smc2_lineif(struct uart_cpm_port
*pinfo
);
106 void scc1_lineif(struct uart_cpm_port
*pinfo
);
107 void scc2_lineif(struct uart_cpm_port
*pinfo
);
108 void scc3_lineif(struct uart_cpm_port
*pinfo
);
109 void scc4_lineif(struct uart_cpm_port
*pinfo
);
112 virtual to phys transtalion
114 static inline unsigned long cpu2cpm_addr(void *addr
,
115 struct uart_cpm_port
*pinfo
)
119 u32 mem
= (u32
)pinfo
->mem_addr
;
121 if (likely(val
>= mem
&& val
< mem
+ pinfo
->mem_size
)) {
123 return pinfo
->dma_addr
+ offset
;
125 /* something nasty happened */
130 static inline void *cpm2cpu_addr(unsigned long addr
,
131 struct uart_cpm_port
*pinfo
)
135 u32 dma
= (u32
)pinfo
->dma_addr
;
137 if (likely(val
>= dma
&& val
< dma
+ pinfo
->mem_size
)) {
139 return pinfo
->mem_addr
+ offset
;
141 /* something nasty happened */
147 #endif /* CPM_UART_H */