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hw/intc/arm_gicv3_redist: Implement gicv3_redist_vlpi_pending()

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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
This commit is contained in:
Peter Maydell 2022-04-08 15:15:41 +01:00
parent d7d39749e6
commit 932f0480d0
1 changed files with 21 additions and 2 deletions
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23
hw/intc/arm_gicv3_redist.c
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@ -1009,9 +1009,28 @@ void gicv3_redist_movall_lpis(GICv3CPUState *src, GICv3CPUState *dest)
void gicv3_redist_vlpi_pending(GICv3CPUState *cs, int irq, int level) void gicv3_redist_vlpi_pending(GICv3CPUState *cs, int irq, int level)
{ {
/* /*
* The redistributor handling for changing the pending state * Change the pending state of the specified vLPI.
* of a vLPI will be added in a subsequent commit. * 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, void gicv3_redist_process_vlpi(GICv3CPUState *cs, int irq, uint64_t vptaddr,