11:31 p.m.
tree: https://github.com/avpatel/linux.git riscv_clint_v1
head: a3dcfcb9ca3fec50ed0e957c648a050f934a7e70
commit: cae3a9a14e033b2c9ce074eb6ee6d607b5a7202b [8/9] clocksource/drivers: Add CLINT
driver
config: riscv-allnoconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout cae3a9a14e033b2c9ce074eb6ee6d607b5a7202b
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp(a)intel.com>
All error/warnings (new ones prefixed by >>, old ones prefixed by <<):
> drivers/clocksource/timer-clint.c:45:15: error: variable
'clint_ipi_ops' has initializer but incomplete type
45 | static struct
riscv_ipi_ops clint_ipi_ops = {
| ^~~~~~~~~~~~~
> drivers/clocksource/timer-clint.c:46:3: error: 'struct
riscv_ipi_ops' has no member named 'ipi_inject'
46 | .ipi_inject =
clint_send_ipi,
| ^~~~~~~~~~
> drivers/clocksource/timer-clint.c:46:16: warning: excess elements
in struct initializer
46 | .ipi_inject = clint_send_ipi,
| ^~~~~~~~~~~~~~
drivers/clocksource/timer-clint.c:46:16: note: (near initialization for
'clint_ipi_ops')
> drivers/clocksource/timer-clint.c:47:3: error: 'struct
riscv_ipi_ops' has no member named 'ipi_clear'
47 | .ipi_clear =
clint_clear_ipi,
| ^~~~~~~~~
drivers/clocksource/timer-clint.c:47:15: warning: excess elements in struct initializer
47 | .ipi_clear = clint_clear_ipi,
| ^~~~~~~~~~~~~~~
drivers/clocksource/timer-clint.c:47:15: note: (near initialization for
'clint_ipi_ops')
drivers/clocksource/timer-clint.c: In function 'clint_timer_init_dt':
> drivers/clocksource/timer-clint.c:172:2: error: implicit
declaration of function 'riscv_set_ipi_ops'
[-Werror=implicit-function-declaration]
172 |
riscv_set_ipi_ops(&clint_ipi_ops);
| ^~~~~~~~~~~~~~~~~
drivers/clocksource/timer-clint.c: At top level:
> drivers/clocksource/timer-clint.c:45:29: error: storage size of
'clint_ipi_ops' isn't known
45 | static struct riscv_ipi_ops
clint_ipi_ops = {
| ^~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/clint_ipi_ops +45 drivers/clocksource/timer-clint.c
44
45 static struct riscv_ipi_ops clint_ipi_ops = {
46 .ipi_inject = clint_send_ipi,
47 .ipi_clear = clint_clear_ipi,
48 };
49
50 #ifdef CONFIG_64BIT
51 #define clint_get_cycles() readq_relaxed(clint_time_val)
52 #else
53 #define clint_get_cycles() readl_relaxed(clint_time_val)
54 #define clint_get_cycles_hi() readl_relaxed(((u32 *)clint_time_val) + 1)
55 #endif
56
57 #ifdef CONFIG_64BIT
58 static u64 clint_get_cycles64(void)
59 {
60 return clint_get_cycles();
61 }
62 #else /* CONFIG_64BIT */
63 static u64 clint_get_cycles64(void)
64 {
65 u32 hi, lo;
66
67 do {
68 hi = clint_get_cycles_hi();
69 lo = clint_get_cycles();
70 } while (hi != clint_get_cycles_hi());
71
72 return ((u64)hi << 32) | lo;
73 }
74 #endif /* CONFIG_64BIT */
75
76 static int clint_clock_next_event(unsigned long delta,
77 struct clock_event_device *ce)
78 {
79 void __iomem *r = clint_time_cmp +
80 cpuid_to_hartid_map(smp_processor_id());
81
82 csr_set(CSR_IE, IE_TIE);
83 writeq_relaxed(clint_get_cycles64() + delta, r);
84 return 0;
85 }
86
87 static DEFINE_PER_CPU(struct clock_event_device, clint_clock_event) = {
88 .name = "clint_clockevent",
89 .features = CLOCK_EVT_FEAT_ONESHOT,
90 .rating = 100,
91 .set_next_event = clint_clock_next_event,
92 };
93
94 static u64 clint_rdtime(struct clocksource *cs)
95 {
96 return readq_relaxed(clint_time_val);
97 }
98
99 static u64 notrace clint_sched_clock(void)
100 {
101 return readq_relaxed(clint_time_val);
102 }
103
104 static struct clocksource clint_clocksource = {
105 .name = "clint_clocksource",
106 .rating = 300,
107 .mask = CLOCKSOURCE_MASK(64),
108 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
109 .read = clint_rdtime,
110 };
111
112 static int clint_timer_starting_cpu(unsigned int cpu)
113 {
114 struct clock_event_device *ce = per_cpu_ptr(&clint_clock_event, cpu);
115
116 ce->cpumask = cpumask_of(cpu);
117 clockevents_config_and_register(ce, clint_freq, 100, 0x7fffffff);
118
119 csr_set(CSR_IE, IE_TIE);
120 return 0;
121 }
122
123 static int clint_timer_dying_cpu(unsigned int cpu)
124 {
125 csr_clear(CSR_IE, IE_TIE);
126 return 0;
127 }
128
129 /* called directly from the low-level interrupt handler */
130 void riscv_timer_interrupt(void)
131 {
132 struct clock_event_device *evdev = this_cpu_ptr(&clint_clock_event);
133
134 csr_clear(CSR_IE, IE_TIE);
135 evdev->event_handler(evdev);
136 }
137
138 static int __init clint_timer_init_dt(struct device_node *np)
139 {
140 int rc;
141 void __iomem *base;
142
143 base = of_iomap(np, 0);
144 if (!base) {
145 pr_err("%pOFP: could not map registers\n", np);
146 return -ENODEV;
147 }
148
149 clint_ipi_base = base + CLINT_IPI_OFF;
150 clint_time_cmp = base + CLINT_TIME_CMP_OFF;
151 clint_time_val = base + CLINT_TIME_VAL_OFF;
152 clint_freq = riscv_timebase;
153
154 rc = clocksource_register_hz(&clint_clocksource, clint_freq);
155 if (rc) {
156 iounmap(base);
157 pr_err("%pOFP: clocksource register failed [%d]\n", np, rc);
158 return rc;
159 }
160
161 sched_clock_register(clint_sched_clock, 64, clint_freq);
162
163 rc = cpuhp_setup_state(CPUHP_AP_CLINT_TIMER_STARTING,
164 "clockevents/clint/timer:starting",
165 clint_timer_starting_cpu, clint_timer_dying_cpu);
166 if (rc) {
167 iounmap(base);
168 pr_err("%pOFP: cpuhp setup state failed [%d]\n", np, rc);
169 return rc;
170 }
171
172 riscv_set_ipi_ops(&clint_ipi_ops);
173 clint_clear_ipi();
174
175 pr_info("%pOFP: timer running at %ld Hz\n", np, clint_freq);
176
177 return 0;
178 }
179
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org