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hw/intc/arm_gicv3_its: Implement MOVALL

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Implement the ITS MOVALL command, which takes all the pending
interrupts on a source redistributor and makes the not-pending on
that source redistributor and pending on a destination redistributor.

This is a GICv3 ITS command which we forgot to implement. (It is
not used by Linux guests.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220122182444.724087-14-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-01-22 18:24:43 +00:00
parent 8b8bb0146b
commit f6d1d9b407
3 changed files with 125 additions and 0 deletions
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55
hw/intc/arm_gicv3_its.c
View file

@ -582,6 +582,58 @@ static ItsCmdResult process_mapd(GICv3ITSState *s, uint64_t value,
return update_dte(s, devid, valid, size, itt_addr) ? CMD_CONTINUE : CMD_STALL;
}
static ItsCmdResult process_movall(GICv3ITSState *s, uint64_t value,
uint32_t offset)
{
AddressSpace *as = &s->gicv3->dma_as;
MemTxResult res = MEMTX_OK;
uint64_t rd1, rd2;
/* No fields in dwords 0 or 1 */
offset += NUM_BYTES_IN_DW;
offset += NUM_BYTES_IN_DW;
value = address_space_ldq_le(as, s->cq.base_addr + offset,
MEMTXATTRS_UNSPECIFIED, &res);
if (res != MEMTX_OK) {
return CMD_STALL;
}
rd1 = FIELD_EX64(value, MOVALL_2, RDBASE1);
if (rd1 >= s->gicv3->num_cpu) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: RDBASE1 %" PRId64
" out of range (must be less than %d)\n",
__func__, rd1, s->gicv3->num_cpu);
return CMD_CONTINUE;
}
offset += NUM_BYTES_IN_DW;
value = address_space_ldq_le(as, s->cq.base_addr + offset,
MEMTXATTRS_UNSPECIFIED, &res);
if (res != MEMTX_OK) {
return CMD_STALL;
}
rd2 = FIELD_EX64(value, MOVALL_3, RDBASE2);
if (rd2 >= s->gicv3->num_cpu) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: RDBASE2 %" PRId64
" out of range (must be less than %d)\n",
__func__, rd2, s->gicv3->num_cpu);
return CMD_CONTINUE;
}
if (rd1 == rd2) {
/* Move to same target must succeed as a no-op */
return CMD_CONTINUE;
}
/* Move all pending LPIs from redistributor 1 to redistributor 2 */
gicv3_redist_movall_lpis(&s->gicv3->cpu[rd1], &s->gicv3->cpu[rd2]);
return CMD_CONTINUE;
}
/*
* Current implementation blocks until all
* commands are processed
@ -679,6 +731,9 @@ static void process_cmdq(GICv3ITSState *s)
gicv3_redist_update_lpi(&s->gicv3->cpu[i]);
}
break;
case GITS_CMD_MOVALL:
result = process_movall(s, data, cq_offset);
break;
default:
break;
}