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[v3,01/17] hw/intc/loongson_ipi: Access memory in little endian

Message ID 20240717214708.78403-2-philmd@linaro.org
State Superseded
Headers show
Series Reconstruct loongson ipi driver | expand

Commit Message

Philippe Mathieu-Daudé July 17, 2024, 9:46 p.m. UTC 
From: Bibo Mao <maobibo@loongson.cn>

Loongson IPI is only available in little-endian,
so use that to access the guest memory (in case
we run on a big-endian host).

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Fixes: f6783e3438 ("hw/loongarch: Add LoongArch ipi interrupt support")
[PMD: Extracted from bigger commit, added commit description]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/intc/loongson_ipi.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/hw/intc/loongson_ipi.c b/hw/intc/loongson_ipi.c
index e6a7142480..e7979dbdd8 100644
--- a/hw/intc/loongson_ipi.c
+++ b/hw/intc/loongson_ipi.c
@@ -14,6 +14,7 @@ 
 #include "qapi/error.h"
 #include "qemu/log.h"
 #include "exec/address-spaces.h"
+#include "exec/memory.h"
 #include "migration/vmstate.h"
 #ifdef TARGET_LOONGARCH64
 #include "target/loongarch/cpu.h"
@@ -102,7 +103,7 @@  static MemTxResult send_ipi_data(CPUState *cpu, uint64_t val, hwaddr addr,
      * if the mask is 0, we need not to do anything.
      */
     if ((val >> 27) & 0xf) {
-        data = address_space_ldl(iocsr_as, addr, attrs, NULL);
+        data = address_space_ldl_le(iocsr_as, addr, attrs, NULL);
         for (i = 0; i < 4; i++) {
             /* get mask for byte writing */
             if (val & (0x1 << (27 + i))) {
@@ -113,7 +114,7 @@  static MemTxResult send_ipi_data(CPUState *cpu, uint64_t val, hwaddr addr,
 
     data &= mask;
     data |= (val >> 32) & ~mask;
-    address_space_stl(iocsr_as, addr, data, attrs, NULL);
+    address_space_stl_le(iocsr_as, addr, data, attrs, NULL);
 
     return MEMTX_OK;
 }