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RISC-V: Use Linux logical CPU number instead of hartid

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Setup the cpu_logical_map during boot. Moreover, every SBI call
and PLIC context are based on the physical hartid. Use the logical
CPU to hartid mapping to pass correct hartid to respective functions.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Atish Patra
2018-10-02 12:15:05 -07:00
committed by Palmer Dabbelt
parent 6825c7a80f
commit f99fb607fb
8 changed files with 71 additions and 32 deletions
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12
drivers/clocksource/riscv_timer.c
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@@ -8,6 +8,7 @@
#include <linux/cpu.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <asm/smp.h>
#include <asm/sbi.h>
/*
@@ -84,13 +85,16 @@ void riscv_timer_interrupt(void)
static int __init riscv_timer_init_dt(struct device_node *n)
{
int cpu_id = riscv_of_processor_hartid(n), error;
int cpuid, hartid, error;
struct clocksource *cs;
if (cpu_id != smp_processor_id())
hartid = riscv_of_processor_hartid(n);
cpuid = riscv_hartid_to_cpuid(hartid);
if (cpuid != smp_processor_id())
return 0;
cs = per_cpu_ptr(&riscv_clocksource, cpu_id);
cs = per_cpu_ptr(&riscv_clocksource, cpuid);
clocksource_register_hz(cs, riscv_timebase);
error = cpuhp_setup_state(CPUHP_AP_RISCV_TIMER_STARTING,
@@ -98,7 +102,7 @@ static int __init riscv_timer_init_dt(struct device_node *n)
riscv_timer_starting_cpu, riscv_timer_dying_cpu);
if (error)
pr_err("RISCV timer register failed [%d] for cpu = [%d]\n",
error, cpu_id);
error, cpuid);
return error;
}