* if we don't have the cp15 accessors we won't have a problem.
*/
u64 (*arch_timer_read_counter)(void) = arch_counter_get_cntvct;
+EXPORT_SYMBOL_GPL(arch_timer_read_counter);
static u64 arch_counter_read(struct clocksource *cs)
{
return __fsl_a008585_read_reg(cntv_tval_el0);
}
+static u64 notrace fsl_a008585_read_cntpct_el0(void)
+{
+ return __fsl_a008585_read_reg(cntpct_el0);
+}
+
static u64 notrace fsl_a008585_read_cntvct_el0(void)
{
return __fsl_a008585_read_reg(cntvct_el0);
return __hisi_161010101_read_reg(cntv_tval_el0);
}
+static u64 notrace hisi_161010101_read_cntpct_el0(void)
+{
+ return __hisi_161010101_read_reg(cntpct_el0);
+}
+
static u64 notrace hisi_161010101_read_cntvct_el0(void)
{
return __hisi_161010101_read_reg(cntvct_el0);
#endif
#ifdef CONFIG_ARM64_ERRATUM_858921
+static u64 notrace arm64_858921_read_cntpct_el0(void)
+{
+ u64 old, new;
+
+ old = read_sysreg(cntpct_el0);
+ new = read_sysreg(cntpct_el0);
+ return (((old ^ new) >> 32) & 1) ? old : new;
+}
+
static u64 notrace arm64_858921_read_cntvct_el0(void)
{
u64 old, new;
struct clock_event_device *clk)
{
unsigned long ctrl;
- u64 cval = evt + arch_counter_get_cntvct();
+ u64 cval;
ctrl = arch_timer_reg_read(access, ARCH_TIMER_REG_CTRL, clk);
ctrl |= ARCH_TIMER_CTRL_ENABLE;
ctrl &= ~ARCH_TIMER_CTRL_IT_MASK;
- if (access == ARCH_TIMER_PHYS_ACCESS)
+ if (access == ARCH_TIMER_PHYS_ACCESS) {
+ cval = evt + arch_counter_get_cntpct();
write_sysreg(cval, cntp_cval_el0);
- else
+ } else {
+ cval = evt + arch_counter_get_cntvct();
write_sysreg(cval, cntv_cval_el0);
+ }
arch_timer_reg_write(access, ARCH_TIMER_REG_CTRL, ctrl, clk);
}
.desc = "Freescale erratum a005858",
.read_cntp_tval_el0 = fsl_a008585_read_cntp_tval_el0,
.read_cntv_tval_el0 = fsl_a008585_read_cntv_tval_el0,
+ .read_cntpct_el0 = fsl_a008585_read_cntpct_el0,
.read_cntvct_el0 = fsl_a008585_read_cntvct_el0,
.set_next_event_phys = erratum_set_next_event_tval_phys,
.set_next_event_virt = erratum_set_next_event_tval_virt,
.desc = "HiSilicon erratum 161010101",
.read_cntp_tval_el0 = hisi_161010101_read_cntp_tval_el0,
.read_cntv_tval_el0 = hisi_161010101_read_cntv_tval_el0,
+ .read_cntpct_el0 = hisi_161010101_read_cntpct_el0,
.read_cntvct_el0 = hisi_161010101_read_cntvct_el0,
.set_next_event_phys = erratum_set_next_event_tval_phys,
.set_next_event_virt = erratum_set_next_event_tval_virt,
.desc = "HiSilicon erratum 161010101",
.read_cntp_tval_el0 = hisi_161010101_read_cntp_tval_el0,
.read_cntv_tval_el0 = hisi_161010101_read_cntv_tval_el0,
+ .read_cntpct_el0 = hisi_161010101_read_cntpct_el0,
.read_cntvct_el0 = hisi_161010101_read_cntvct_el0,
.set_next_event_phys = erratum_set_next_event_tval_phys,
.set_next_event_virt = erratum_set_next_event_tval_virt,
.match_type = ate_match_local_cap_id,
.id = (void *)ARM64_WORKAROUND_858921,
.desc = "ARM erratum 858921",
+ .read_cntpct_el0 = arm64_858921_read_cntpct_el0,
.read_cntvct_el0 = arm64_858921_read_cntvct_el0,
},
#endif
/* Register the CP15 based counter if we have one */
if (type & ARCH_TIMER_TYPE_CP15) {
- if (IS_ENABLED(CONFIG_ARM64) ||
+ if ((IS_ENABLED(CONFIG_ARM64) && !is_hyp_mode_available()) ||
arch_timer_uses_ppi == ARCH_TIMER_VIRT_PPI)
arch_timer_read_counter = arch_counter_get_cntvct;
else