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hw/intc/arm_gicv3_its: Implement INV for virtual interrupts 

Implement the ITS side of the handling of the INV command for
virtual interrupts; as usual this calls into a redistributor
function which we leave as a stub to fill in later.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220408141550.1271295-20-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-04-08 15:15:28 +01:00
parent a686e85d2b
commit d4014320a4
3 changed files with 31 additions and 2 deletions
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16
hw/intc/arm_gicv3_its.c
View File

@ -1090,6 +1090,7 @@ static ItsCmdResult process_inv(GICv3ITSState *s, const uint64_t *cmdpkt)
ITEntry ite;
DTEntry dte;
CTEntry cte;
VTEntry vte;
ItsCmdResult cmdres;
devid = FIELD_EX64(cmdpkt[0], INV_0, DEVICEID);
@ -1118,8 +1119,19 @@ static ItsCmdResult process_inv(GICv3ITSState *s, const uint64_t *cmdpkt)
__func__, ite.inttype);
return CMD_CONTINUE;
}
/* We will implement the vLPI invalidation in a later commit */
g_assert_not_reached();
cmdres = lookup_vte(s, __func__, ite.vpeid, &vte);
if (cmdres != CMD_CONTINUE_OK) {
return cmdres;
}
if (!intid_in_lpi_range(ite.intid) ||
ite.intid >= (1ULL << (vte.vptsize + 1))) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: intid 0x%x out of range\n",
__func__, ite.intid);
return CMD_CONTINUE;
}
gicv3_redist_inv_vlpi(&s->gicv3->cpu[vte.rdbase], ite.intid,
vte.vptaddr << 16);
break;
default:
g_assert_not_reached();

8
hw/intc/arm_gicv3_redist.c
View File

@ -808,6 +808,14 @@ void gicv3_redist_process_vlpi(GICv3CPUState *cs, int irq, uint64_t vptaddr,
*/
}
void gicv3_redist_inv_vlpi(GICv3CPUState *cs, int irq, uint64_t vptaddr)
{
/*
* The redistributor handling for invalidating cached information
* about a VLPI will be added in a subsequent commit.
*/
}
void gicv3_redist_set_irq(GICv3CPUState *cs, int irq, int level)
{
/* Update redistributor state for a change in an external PPI input line */

9
hw/intc/gicv3_internal.h
View File

@ -585,6 +585,15 @@ void gicv3_redist_update_lpi_only(GICv3CPUState *cs);
* Forget or update any cached information associated with this LPI.
*/
void gicv3_redist_inv_lpi(GICv3CPUState *cs, int irq);
/**
* gicv3_redist_inv_vlpi:
* @cs: GICv3CPUState
* @irq: vLPI to invalidate cached information for
* @vptaddr: (guest) address of vLPI table
*
* Forget or update any cached information associated with this vLPI.
*/
void gicv3_redist_inv_vlpi(GICv3CPUState *cs, int irq, uint64_t vptaddr);
/**
* gicv3_redist_mov_lpi:
* @src: source redistributor