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10#include <linux/oprofile.h>
11#include <linux/init.h>
12#include <linux/smp.h>
13#include <asm/ptrace.h>
14
15#include "op_impl.h"
16
17
18
19
20static void
21ev6_reg_setup(struct op_register_config *reg,
22 struct op_counter_config *ctr,
23 struct op_system_config *sys)
24{
25 unsigned long ctl, reset, need_reset, i;
26
27
28
29 ctl = 0;
30 if (ctr[0].enabled && ctr[0].event)
31 ctl |= (ctr[0].event & 1) << 4;
32 if (ctr[1].enabled)
33 ctl |= (ctr[1].event - 2) & 15;
34 reg->mux_select = ctl;
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38
39
40 reg->proc_mode = 0;
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44
45
46 reset = need_reset = 0;
47 for (i = 0; i < 2; ++i) {
48 unsigned long count = ctr[i].count;
49 if (!ctr[i].enabled)
50 continue;
51
52 if (count > 0x100000)
53 count = 0x100000;
54 ctr[i].count = count;
55 reset |= (0x100000 - count) << (i ? 6 : 28);
56 if (count != 0x100000)
57 need_reset |= 1 << i;
58 }
59 reg->reset_values = reset;
60 reg->need_reset = need_reset;
61}
62
63
64
65static void
66ev6_cpu_setup (void *x)
67{
68 struct op_register_config *reg = x;
69
70 wrperfmon(2, reg->mux_select);
71 wrperfmon(3, reg->proc_mode);
72 wrperfmon(6, reg->reset_values | 3);
73}
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77
78
79static void
80ev6_reset_ctr(struct op_register_config *reg, unsigned long ctr)
81{
82 wrperfmon(6, reg->reset_values | (1 << ctr));
83}
84
85static void
86ev6_handle_interrupt(unsigned long which, struct pt_regs *regs,
87 struct op_counter_config *ctr)
88{
89
90 oprofile_add_sample(regs, which);
91}
92
93
94struct op_axp_model op_model_ev6 = {
95 .reg_setup = ev6_reg_setup,
96 .cpu_setup = ev6_cpu_setup,
97 .reset_ctr = ev6_reset_ctr,
98 .handle_interrupt = ev6_handle_interrupt,
99 .cpu_type = "alpha/ev6",
100 .num_counters = 2,
101 .can_set_proc_mode = 0,
102};
103