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[PATCH 23/26] hw/intc/arm_gicv3_its: Fix return codes in process_mapti()
From: |
Peter Maydell |
Subject: |
[PATCH 23/26] hw/intc/arm_gicv3_its: Fix return codes in process_mapti() |
Date: |
Sat, 11 Dec 2021 19:11:32 +0000 |
Fix process_mapti() to consistently return CMD_STALL for memory
errors and CMD_CONTINUE for parameter errors, as we claim in the
comments that we do.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/intc/arm_gicv3_its.c | 28 +++++++++++++---------------
1 file changed, 13 insertions(+), 15 deletions(-)
diff --git a/hw/intc/arm_gicv3_its.c b/hw/intc/arm_gicv3_its.c
index 275af620058..5b25347de12 100644
--- a/hw/intc/arm_gicv3_its.c
+++ b/hw/intc/arm_gicv3_its.c
@@ -355,7 +355,7 @@ static ItsCmdResult process_mapti(GICv3ITSState *s,
uint64_t value,
MemTxResult res = MEMTX_OK;
uint16_t icid = 0;
uint64_t dte = 0;
- ItsCmdResult result = CMD_STALL;
+ IteEntry ite = {};
devid = ((value & DEVID_MASK) >> DEVID_SHIFT);
offset += NUM_BYTES_IN_DW;
@@ -363,7 +363,7 @@ static ItsCmdResult process_mapti(GICv3ITSState *s,
uint64_t value,
MEMTXATTRS_UNSPECIFIED, &res);
if (res != MEMTX_OK) {
- return result;
+ return CMD_STALL;
}
eventid = (value & EVENTID_MASK);
@@ -379,7 +379,7 @@ static ItsCmdResult process_mapti(GICv3ITSState *s,
uint64_t value,
MEMTXATTRS_UNSPECIFIED, &res);
if (res != MEMTX_OK) {
- return result;
+ return CMD_STALL;
}
icid = value & ICID_MASK;
@@ -387,7 +387,7 @@ static ItsCmdResult process_mapti(GICv3ITSState *s,
uint64_t value,
dte = get_dte(s, devid, &res);
if (res != MEMTX_OK) {
- return result;
+ return CMD_STALL;
}
dte_valid = FIELD_EX64(dte, DTE, VALID);
num_eventids = 1ULL << (FIELD_EX64(dte, DTE, SIZE) + 1);
@@ -407,19 +407,17 @@ static ItsCmdResult process_mapti(GICv3ITSState *s,
uint64_t value,
* we ignore this command and move onto the next
* command in the queue
*/
- } else {
- /* add ite entry to interrupt translation table */
- IteEntry ite = {};
- ite.itel = FIELD_DP64(ite.itel, ITE_L, VALID, dte_valid);
- ite.itel = FIELD_DP64(ite.itel, ITE_L, INTTYPE, ITE_INTTYPE_PHYSICAL);
- ite.itel = FIELD_DP64(ite.itel, ITE_L, INTID, pIntid);
- ite.itel = FIELD_DP64(ite.itel, ITE_L, DOORBELL, INTID_SPURIOUS);
- ite.iteh = FIELD_DP32(ite.iteh, ITE_H, ICID, icid);
-
- result = update_ite(s, eventid, dte, ite) ? CMD_CONTINUE : CMD_STALL;
+ return CMD_CONTINUE;
}
- return result;
+ /* add ite entry to interrupt translation table */
+ ite.itel = FIELD_DP64(ite.itel, ITE_L, VALID, dte_valid);
+ ite.itel = FIELD_DP64(ite.itel, ITE_L, INTTYPE, ITE_INTTYPE_PHYSICAL);
+ ite.itel = FIELD_DP64(ite.itel, ITE_L, INTID, pIntid);
+ ite.itel = FIELD_DP64(ite.itel, ITE_L, DOORBELL, INTID_SPURIOUS);
+ ite.iteh = FIELD_DP32(ite.iteh, ITE_H, ICID, icid);
+
+ return update_ite(s, eventid, dte, ite) ? CMD_CONTINUE : CMD_STALL;
}
static bool update_cte(GICv3ITSState *s, uint16_t icid, bool valid,
--
2.25.1
- [PATCH 18/26] hw/intc/arm_gicv3_its: Fix handling of process_its_cmd() return value, (continued)