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1 /* timer-regs.h: hardware timer register definitions
2  *
3  * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4  * Written by David Howells (dhowells@redhat.com)
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version
9  * 2 of the License, or (at your option) any later version.
10  */
11
12 #ifndef _ASM_TIMER_REGS_H
13 #define _ASM_TIMER_REGS_H
14
15 #include <asm/sections.h>
16
17 extern unsigned long __nongprelbss __clkin_clock_speed_HZ;
18 extern unsigned long __nongprelbss __ext_bus_clock_speed_HZ;
19 extern unsigned long __nongprelbss __res_bus_clock_speed_HZ;
20 extern unsigned long __nongprelbss __sdram_clock_speed_HZ;
21 extern unsigned long __nongprelbss __core_bus_clock_speed_HZ;
22 extern unsigned long __nongprelbss __core_clock_speed_HZ;
23 extern unsigned long __nongprelbss __dsu_clock_speed_HZ;
24 extern unsigned long __nongprelbss __serial_clock_speed_HZ;
25
26 #define __get_CLKC()    ({ *(volatile unsigned long *)(0xfeff9a00); })
27
28 static inline void __set_CLKC(unsigned long v)
29 {
30         int tmp;
31
32         asm volatile("  st%I0.p %2,%M0          \n"
33                      "  setlos  %3,%1           \n"
34                      "  membar                  \n"
35                      "0:                        \n"
36                      "  subicc  %1,#1,%1,icc0   \n"
37                      "  bnc     icc0,#1,0b      \n"
38                      : "=m"(*(volatile unsigned long *) 0xfeff9a00), "=r"(tmp)
39                      : "r"(v), "i"(256)
40                      : "icc0");
41 }
42
43 #define __get_TCTR()    ({ *(volatile unsigned long *)(0xfeff9418); })
44 #define __get_TPRV()    ({ *(volatile unsigned long *)(0xfeff9420); })
45 #define __get_TPRCKSL() ({ *(volatile unsigned long *)(0xfeff9428); })
46 #define __get_TCSR(T)   ({ *(volatile unsigned long *)(0xfeff9400 + 8 * (T)); })
47 #define __get_TxCKSL(T) ({ *(volatile unsigned long *)(0xfeff9430 + 8 * (T)); })
48
49 #define __get_TCSR_DATA(T) ({ __get_TCSR(T) >> 24; })
50
51 #define __set_TCTR(V)   do { *(volatile unsigned long *)(0xfeff9418) = (V); mb(); } while(0)
52 #define __set_TPRV(V)   do { *(volatile unsigned long *)(0xfeff9420) = (V) << 24; mb(); } while(0)
53 #define __set_TPRCKSL(V) do { *(volatile unsigned long *)(0xfeff9428) = (V); mb(); } while(0)
54 #define __set_TCSR(T,V) \
55 do { *(volatile unsigned long *)(0xfeff9400 + 8 * (T)) = (V); mb(); } while(0)
56
57 #define __set_TxCKSL(T,V) \
58 do { *(volatile unsigned long *)(0xfeff9430 + 8 * (T)) = (V); mb(); } while(0)
59
60 #define __set_TCSR_DATA(T,V) __set_TCSR(T, (V) << 24)
61 #define __set_TxCKSL_DATA(T,V) __set_TxCKSL(T, TxCKSL_EIGHT | __TxCKSL_SELECT((V)))
62
63 /* clock control register */
64 #define CLKC_CMODE              0x0f000000
65 #define CLKC_SLPL               0x000f0000
66 #define CLKC_P0                 0x00000100
67 #define CLKC_CM                 0x00000003
68
69 #define CLKC_CMODE_s            24
70
71 /* timer control register - non-readback mode */
72 #define TCTR_MODE_0             0x00000000
73 #define TCTR_MODE_2             0x04000000
74 #define TCTR_MODE_4             0x08000000
75 #define TCTR_MODE_5             0x0a000000
76 #define TCTR_RL_LATCH           0x00000000
77 #define TCTR_RL_RW_LOW8         0x10000000
78 #define TCTR_RL_RW_HIGH8        0x20000000
79 #define TCTR_RL_RW_LH8          0x30000000
80 #define TCTR_SC_CTR0            0x00000000
81 #define TCTR_SC_CTR1            0x40000000
82 #define TCTR_SC_CTR2            0x80000000
83
84 /* timer control register - readback mode */
85 #define TCTR_CNT0               0x02000000
86 #define TCTR_CNT1               0x04000000
87 #define TCTR_CNT2               0x08000000
88 #define TCTR_NSTATUS            0x10000000
89 #define TCTR_NCOUNT             0x20000000
90 #define TCTR_SC_READBACK        0xc0000000
91
92 /* timer control status registers - non-readback mode */
93 #define TCSRx_DATA              0xff000000
94
95 /* timer control status registers - readback mode */
96 #define TCSRx_OUTPUT            0x80000000
97 #define TCSRx_NULLCOUNT         0x40000000
98 #define TCSRx_RL                0x30000000
99 #define TCSRx_MODE              0x07000000
100
101 /* timer clock select registers */
102 #define TxCKSL_SELECT           0x0f000000
103 #define __TxCKSL_SELECT(X)      ((X) << 24)
104 #define TxCKSL_EIGHT            0xf0000000
105
106 #endif /* _ASM_TIMER_REGS_H */