blob: 3b35cb779539a891c40b433411a0111ac4226daa (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/*
* linux/drivers/serial/cpm_uart.h
*
* Driver for CPM (SCC/SMC) serial ports
*
* Copyright (C) 2004 Freescale Semiconductor, Inc.
*
* 2006 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*
*/
#ifndef CPM_UART_H
#define CPM_UART_H
#include <linux/config.h>
#include <linux/platform_device.h>
#include <linux/fs_uart_pd.h>
#if defined(CONFIG_CPM2)
#include "cpm_uart_cpm2.h"
#elif defined(CONFIG_8xx)
#include "cpm_uart_cpm1.h"
#endif
#define SERIAL_CPM_MAJOR 204
#define SERIAL_CPM_MINOR 46
#define IS_SMC(pinfo) (pinfo->flags & FLAG_SMC)
#define IS_DISCARDING(pinfo) (pinfo->flags & FLAG_DISCARDING)
#define FLAG_DISCARDING 0x00000004 /* when set, don't discard */
#define FLAG_SMC 0x00000002
#define FLAG_CONSOLE 0x00000001
#define UART_SMC1 fsid_smc1_uart
#define UART_SMC2 fsid_smc2_uart
#define UART_SCC1 fsid_scc1_uart
#define UART_SCC2 fsid_scc2_uart
#define UART_SCC3 fsid_scc3_uart
#define UART_SCC4 fsid_scc4_uart
#define UART_NR fs_uart_nr
#define RX_NUM_FIFO 4
#define RX_BUF_SIZE 32
#define TX_NUM_FIFO 4
#define TX_BUF_SIZE 32
#define SCC_WAIT_CLOSING 100
struct uart_cpm_port {
struct uart_port port;
u16 rx_nrfifos;
u16 rx_fifosize;
u16 tx_nrfifos;
u16 tx_fifosize;
smc_t *smcp;
smc_uart_t *smcup;
scc_t *sccp;
scc_uart_t *sccup;
volatile cbd_t *rx_bd_base;
volatile cbd_t *rx_cur;
volatile cbd_t *tx_bd_base;
volatile cbd_t *tx_cur;
unsigned char *tx_buf;
unsigned char *rx_buf;
u32 flags;
void (*set_lineif)(struct uart_cpm_port *);
u8 brg;
uint dp_addr;
void *mem_addr;
dma_addr_t dma_addr;
u32 mem_size;
/* helpers */
int baud;
int bits;
/* Keep track of 'odd' SMC2 wirings */
int is_portb;
/* wait on close if needed */
int wait_closing;
};
extern int cpm_uart_port_map[UART_NR];
extern int cpm_uart_nr;
extern struct uart_cpm_port cpm_uart_ports[UART_NR];
/* these are located in their respective files */
void cpm_line_cr_cmd(int line, int cmd);
int cpm_uart_init_portdesc(void);
int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con);
void cpm_uart_freebuf(struct uart_cpm_port *pinfo);
void smc1_lineif(struct uart_cpm_port *pinfo);
void smc2_lineif(struct uart_cpm_port *pinfo);
void scc1_lineif(struct uart_cpm_port *pinfo);
void scc2_lineif(struct uart_cpm_port *pinfo);
void scc3_lineif(struct uart_cpm_port *pinfo);
void scc4_lineif(struct uart_cpm_port *pinfo);
/*
virtual to phys transtalion
*/
static inline unsigned long cpu2cpm_addr(void* addr, struct uart_cpm_port *pinfo)
{
int offset;
u32 val = (u32)addr;
/* sane check */
if (likely((val >= (u32)pinfo->mem_addr)) &&
(val<((u32)pinfo->mem_addr + pinfo->mem_size))) {
offset = val - (u32)pinfo->mem_addr;
return pinfo->dma_addr+offset;
}
/* something nasty happened */
BUG();
return 0;
}
static inline void *cpm2cpu_addr(unsigned long addr, struct uart_cpm_port *pinfo)
{
int offset;
u32 val = addr;
/* sane check */
if (likely((val >= pinfo->dma_addr) &&
(val<(pinfo->dma_addr + pinfo->mem_size)))) {
offset = val - (u32)pinfo->dma_addr;
return (void*)(pinfo->mem_addr+offset);
}
/* something nasty happened */
BUG();
return 0;
}
#endif /* CPM_UART_H */
|
