diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2022-04-08 15:15:41 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2022-04-22 14:44:53 +0100 |
| commit | 932f0480d0275c6e5c171ca464806cda90627d86 (patch) | |
| tree | df949e984dd3453f9ca34a6458247cca52ac1e38 /hw/intc | |
| parent | d7d39749e671b5adde56b9d3b94f4c2f4ce86795 (diff) | |
hw/intc/arm_gicv3_redist: Implement gicv3_redist_vlpi_pending()
Implement the function gicv3_redist_vlpi_pending(), which was
previously left as a stub. This is the function that is called by
the CPU interface when it changes the state of a vLPI. It's similar
to gicv3_redist_process_vlpi(), but we know that the vCPU is
definitely resident on the redistributor and the irq is in range, so
it is a bit simpler.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220408141550.1271295-33-peter.maydell@linaro.org
Diffstat (limited to 'hw/intc')
| -rw-r--r-- | hw/intc/arm_gicv3_redist.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/hw/intc/arm_gicv3_redist.c b/hw/intc/arm_gicv3_redist.c index 1ed251b87b..0fbb04f998 100644 --- a/hw/intc/arm_gicv3_redist.c +++ b/hw/intc/arm_gicv3_redist.c @@ -1009,9 +1009,28 @@ void gicv3_redist_movall_lpis(GICv3CPUState *src, GICv3CPUState *dest) void gicv3_redist_vlpi_pending(GICv3CPUState *cs, int irq, int level) { /* - * The redistributor handling for changing the pending state - * of a vLPI will be added in a subsequent commit. + * Change the pending state of the specified vLPI. + * Unlike gicv3_redist_process_vlpi(), we know here that the + * vCPU is definitely resident on this redistributor, and that + * the irq is in range. */ + uint64_t vptbase, ctbase; + + vptbase = FIELD_EX64(cs->gicr_vpendbaser, GICR_VPENDBASER, PHYADDR) << 16; + + if (set_pending_table_bit(cs, vptbase, irq, level)) { + if (level) { + /* Check whether this vLPI is now the best */ + ctbase = cs->gicr_vpropbaser & R_GICR_VPROPBASER_PHYADDR_MASK; + update_for_one_lpi(cs, irq, ctbase, true, &cs->hppvlpi); + gicv3_cpuif_virt_irq_fiq_update(cs); + } else { + /* Only need to recalculate if this was previously the best vLPI */ + if (irq == cs->hppvlpi.irq) { + gicv3_redist_update_vlpi(cs); + } + } + } } void gicv3_redist_process_vlpi(GICv3CPUState *cs, int irq, uint64_t vptaddr, |