On Tue, Jul 04, 2017 at 10:37:37PM +0200, Thomas Gleixner wrote:
> On Tue, 4 Jul 2017, Palmer Dabbelt wrote:
> > +unsigned long riscv_timebase;
> > +
> > +static int next_event(unsigned long delta, struct clock_event_device *ce)
> > +{
> > + BUG_ON(ce != timer_riscv_device(smp_processor_id()));
> > + sbi_set_timer(get_cycles64() + delta);
> > + return 0;
> > +}
> > +
> > +static unsigned long long rdtime(struct clocksource *cs)
> > +{
> > + BUG_ON(cs != timer_riscv_source(smp_processor_id()));
> > + return get_cycles64();
> > +}
> > +
> > +void riscv_timer_interrupt(void)
> > +{
> > + int cpu = smp_processor_id();
> > + struct clock_event_device *evdev = timer_riscv_device(cpu);
> > +
> > + evdev->event_handler(evdev);
> > +}
> > +
> > +void __init time_init(void)
> > +{
> > + struct device_node *cpu;
> > + u32 prop;
> > + int cpu_id = smp_processor_id();
> > +
> > + cpu = of_find_node_by_path("/cpus");
> > + if (!cpu || of_property_read_u32(cpu, "timebase-frequency", &prop))
> > + panic(KERN_WARNING "RISC-V system with no 'timebase-frequency' in DTS\n");
> > + riscv_timebase = prop;
> > +
> > + lpj_fine = riscv_timebase / HZ;
> > +
> > + timer_riscv_init(cpu_id, riscv_timebase, &rdtime, &next_event);
>
> This function is nowhere.... Neither can I find the header file.
It is part of the RISC-V clock driver patchset, please cf.
https://github.com/riscv/riscv-linux/commit/0705a31372d4714e54c5104e02021441785c1fd5
https://github.com/riscv/riscv-linux/commits/riscv-for-submission-v4
has the various RISC-V-related driver patchsets merged in (in
addition to this arch patchset).
Regards,
Karsten
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