From: Bibo Mao <maobibo@loongson.cn>
Date: Tue, 16 Jul 2024 21:41:23 +0000 (+0200)
Subject: hw/intc/loongson_ipi: Access memory in little endian
X-Git-Tag: v7.2.14~39
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ca834bcc4da868bc8890fbe8bfc7f2648cd527fc;p=thirdparty%2Fqemu.git

hw/intc/loongson_ipi: Access memory in little endian

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).

Cc: qemu-stable@nongnu.org
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]
Co-Developed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Tested-by: Bibo Mao <maobibo@loongson.cn>
Acked-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <20240718133312.10324-3-philmd@linaro.org>
(cherry picked from commit 2465c89fb983eed670007742bd68c7d91b6d6f85)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(Mjt: fixups for 7.2, for lack of:
 v9.0.0-583-g91d0b151de4c "hw/intc/loongson_ipi: Implement IOCSR address space for MIPS"
 v9.0.0-582-gb4a12dfc2132 "hw/intc/loongarch_ipi: Rename as loongson_ipi"
 v8.2.0-545-gfdd6ee0b7653 "hw/intc/loongarch_ipi: Use MemTxAttrs interface for ipi ops")
---

diff --git a/hw/intc/loongarch_ipi.c b/hw/intc/loongarch_ipi.c
index 40e98af2ce6..a4079e3732e 100644
--- a/hw/intc/loongarch_ipi.c
+++ b/hw/intc/loongarch_ipi.c
@@ -12,6 +12,7 @@
 #include "qapi/error.h"
 #include "qemu/log.h"
 #include "exec/address-spaces.h"
+#include "exec/memory.h"
 #include "hw/loongarch/virt.h"
 #include "migration/vmstate.h"
 #include "target/loongarch/internals.h"
@@ -59,8 +60,8 @@ static void send_ipi_data(CPULoongArchState *env, target_ulong val, target_ulong
      * if the mask is 0, we need not to do anything.
      */
     if ((val >> 27) & 0xf) {
-        data = address_space_ldl(&env->address_space_iocsr, addr,
-                                 MEMTXATTRS_UNSPECIFIED, NULL);
+        data = address_space_ldl_le(&env->address_space_iocsr, addr,
+                                    MEMTXATTRS_UNSPECIFIED, NULL);
         for (i = 0; i < 4; i++) {
             /* get mask for byte writing */
             if (val & (0x1 << (27 + i))) {
@@ -71,8 +72,8 @@ static void send_ipi_data(CPULoongArchState *env, target_ulong val, target_ulong
 
     data &= mask;
     data |= (val >> 32) & ~mask;
-    address_space_stl(&env->address_space_iocsr, addr,
-                      data, MEMTXATTRS_UNSPECIFIED, NULL);
+    address_space_stl_le(&env->address_space_iocsr, addr,
+                         data, MEMTXATTRS_UNSPECIFIED, NULL);
 }
 
 static void ipi_send(uint64_t val)