Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/bnx2-2.6
[linux-2.6] / include / asm-arm / arch-s3c2410 / debug-macro.S
1 /* linux/include/asm-arm/arch-s3c2410/debug-macro.S
2  *
3  * Debugging macro include header
4  *
5  *  Copyright (C) 1994-1999 Russell King
6  *  Copyright (C) 2005 Simtec Electronics
7  *
8  *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  *
14  * Modifications:
15  *     10-Mar-2005 LCVR  Changed S3C2410_VA to S3C24XX_VA
16 */
17
18 #include <asm/arch/map.h>
19 #include <asm/arch/regs-serial.h>
20 #include <asm/arch/regs-gpio.h>
21
22 #define S3C2410_UART1_OFF (0x4000)
23 #define SHIFT_2440TXF (14-9)
24
25                 .macro addruart, rx
26                 mrc     p15, 0, \rx, c1, c0
27                 tst     \rx, #1
28                 ldreq   \rx, = S3C24XX_PA_UART
29                 ldrne   \rx, = S3C24XX_VA_UART
30 #if CONFIG_DEBUG_S3C2410_UART != 0
31                 add     \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C2410_UART)
32 #endif
33                 .endm
34
35                 .macro  senduart,rd,rx
36                 str     \rd, [\rx, # S3C2410_UTXH ]
37                 .endm
38
39                 .macro  busyuart, rd, rx
40                 ldr     \rd, [ \rx, # S3C2410_UFCON ]
41                 tst     \rd, #S3C2410_UFCON_FIFOMODE    @ fifo enabled?
42                 beq     1001f                           @
43                 @ FIFO enabled...
44 1003:
45                 mrc     p15, 0, \rd, c1, c0
46                 tst     \rd, #1
47                 addeq   \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
48                 addne   \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
49                 bic     \rd, \rd, #0xff000
50                 ldr     \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
51                 and     \rd, \rd, #0x00ff0000
52                 teq     \rd, #0x00440000                @ is it 2440?
53
54                 ldr     \rd, [ \rx, # S3C2410_UFSTAT ]
55                 moveq   \rd, \rd, lsr #SHIFT_2440TXF
56                 tst     \rd, #S3C2410_UFSTAT_TXFULL
57                 bne     1003b
58                 b       1002f
59
60 1001:
61                 @ busy waiting for non fifo
62                 ldr     \rd, [ \rx, # S3C2410_UTRSTAT ]
63                 tst     \rd, #S3C2410_UTRSTAT_TXFE
64                 beq     1001b
65
66 1002:           @ exit busyuart
67                 .endm
68
69                 .macro  waituart,rd,rx
70
71                 ldr     \rd, [ \rx, # S3C2410_UFCON ]
72                 tst     \rd, #S3C2410_UFCON_FIFOMODE    @ fifo enabled?
73                 beq     1001f                           @
74                 @ FIFO enabled...
75 1003:
76                 mrc     p15, 0, \rd, c1, c0
77                 tst     \rd, #1
78                 addeq   \rd, \rx, #(S3C24XX_PA_GPIO - S3C24XX_PA_UART)
79                 addne   \rd, \rx, #(S3C24XX_VA_GPIO - S3C24XX_VA_UART)
80                 bic     \rd, \rd, #0xff000
81                 ldr     \rd, [ \rd, # S3C2410_GSTATUS1 - S3C2410_GPIOREG(0) ]
82                 and     \rd, \rd, #0x00ff0000
83                 teq     \rd, #0x00440000                @ is it 2440?
84
85                 ldr     \rd, [ \rx, # S3C2410_UFSTAT ]
86                 andne   \rd, \rd, #S3C2410_UFSTAT_TXMASK
87                 andeq   \rd, \rd, #S3C2440_UFSTAT_TXMASK
88                 teq     \rd, #0
89                 bne     1003b
90                 b       1002f
91
92 1001:
93                 @ idle waiting for non fifo
94                 ldr     \rd, [ \rx, # S3C2410_UTRSTAT ]
95                 tst     \rd, #S3C2410_UTRSTAT_TXFE
96                 beq     1001b
97
98 1002:           @ exit busyuart
99                 .endm