1 | /* |
---|
2 | * C4X IO Information |
---|
3 | * |
---|
4 | * $Id$ |
---|
5 | */ |
---|
6 | |
---|
7 | #ifndef __C4XIO_h |
---|
8 | #define __C4XIO_h |
---|
9 | |
---|
10 | /* |
---|
11 | * Address defines |
---|
12 | */ |
---|
13 | |
---|
14 | #ifdef _TMS320C40 |
---|
15 | #define C4X_TIMER_0 ((struct c4x_timer*)0x100020) |
---|
16 | #else |
---|
17 | #define C4X_TIMER_0 ((struct c4x_timer*)0x808020) |
---|
18 | #define C4X_TIMER_1 ((struct c4x_timer*)0x808030) |
---|
19 | #endif |
---|
20 | |
---|
21 | /* XXX how portable */ |
---|
22 | |
---|
23 | /* C32 Internal Control Registers */ |
---|
24 | #define C4X_STRB0_REG 0x808064 |
---|
25 | #define C4X_STRB1_REG 0x808068 |
---|
26 | #define C4X_IOSTRB_REG 0x808060 |
---|
27 | |
---|
28 | /* C32 Internal RAM Locations */ |
---|
29 | /* XXX how long */ |
---|
30 | #define C4X_RAM_BLK_0 0x87fe00 |
---|
31 | #define C4X_RAM_BLK_1 0x87ff00 |
---|
32 | |
---|
33 | /* |
---|
34 | * Data Structures to Overlay the Peripherals on the CPU |
---|
35 | */ |
---|
36 | |
---|
37 | struct c4x_timer { |
---|
38 | volatile int tcontrol; |
---|
39 | volatile int r1[3]; |
---|
40 | volatile int tcounter; |
---|
41 | volatile int r2[3]; |
---|
42 | volatile int tperiod; |
---|
43 | }; |
---|
44 | |
---|
45 | |
---|
46 | |
---|
47 | |
---|
48 | /* |
---|
49 | * Timer Support Routines |
---|
50 | * |
---|
51 | * The following section of C4x timer code is based on C40 specific |
---|
52 | * timer code from Ran Cabell <rcabell@norfolk.infi.net>. The |
---|
53 | * only C3x/C4x difference spotted was the address of the timer. |
---|
54 | * The names have been changed to be more RTEMS like. |
---|
55 | */ |
---|
56 | |
---|
57 | #define c4x_timer_get_control( _timer ) (volatile int)(_timer->tcontrol) |
---|
58 | |
---|
59 | #define c4x_timer_set_control( _timer, _value ) \ |
---|
60 | do { \ |
---|
61 | (volatile int)(_timer->tcontrol) = _value; \ |
---|
62 | } while (0); |
---|
63 | |
---|
64 | #define c4x_timer_start( _timer ) \ |
---|
65 | c4x_timer_set_control(_timer, 0x02c1 ) |
---|
66 | |
---|
67 | #define c4x_timer_stop( _timer ) _timer->tcontrol = 0 |
---|
68 | |
---|
69 | #define c4x_timer_get_counter( _timer ) (volatile int)(_timer->tcounter) |
---|
70 | |
---|
71 | #define c4x_timer_set_counter( _timer, _value ) \ |
---|
72 | do { \ |
---|
73 | (volatile int)(_timer->tcounter) = _value; \ |
---|
74 | } while (0); |
---|
75 | |
---|
76 | #define c4x_timer_get_period( _timer ) (volatile int)(_timer->tperiod) |
---|
77 | |
---|
78 | #define c4x_timer_set_period( _timer, _value ) \ |
---|
79 | do { \ |
---|
80 | (volatile int)(_timer->tperiod) = _value; \ |
---|
81 | } while (0); |
---|
82 | |
---|
83 | /* |
---|
84 | * IO Flags |
---|
85 | * |
---|
86 | * NOTE: iof on c3x, iiof on c4x |
---|
87 | */ |
---|
88 | |
---|
89 | #ifdef _TMS320C40 |
---|
90 | |
---|
91 | #else |
---|
92 | |
---|
93 | static inline uint32_t c3x_get_iof( void ) |
---|
94 | { |
---|
95 | register uint32_t iof_value; |
---|
96 | |
---|
97 | __asm__ volatile ("ldi iof, %0" : "=r" (iof_value)); |
---|
98 | return iof_value; |
---|
99 | } |
---|
100 | |
---|
101 | static inline void c3x_set_iof( uint32_t value ) |
---|
102 | { |
---|
103 | __asm__ volatile ("ldi %0,iof" : : "g" (value) : "iof", "cc"); |
---|
104 | } |
---|
105 | |
---|
106 | #endif |
---|
107 | |
---|
108 | |
---|
109 | #endif |
---|
110 | /* end if include file */ |
---|