From 17fe1418db474b23d9f516db049772dfe3d8696c Mon Sep 17 00:00:00 2001
From: Minep <lunaixsky@qq.com>
Date: Wed, 14 Jun 2023 22:29:22 +0100
Subject: [PATCH 1/1] fix: the correct way to detect ahci LBA48 support

---
 lunaix-os/hal/ahci/utils.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lunaix-os/hal/ahci/utils.c b/lunaix-os/hal/ahci/utils.c
index 4a86cc3..923f916 100644
--- a/lunaix-os/hal/ahci/utils.c
+++ b/lunaix-os/hal/ahci/utils.c
@@ -13,6 +13,7 @@
 #define IDDEV_OFFSERIALNUM 10
 #define IDDEV_OFFMODELNUM 27
 #define IDDEV_OFFADDSUPPORT 69
+#define IDDEV_OFFA48SUPPORT 83
 #define IDDEV_OFFALIGN 209
 #define IDDEV_OFFLPP 106
 #define IDDEV_OFFCAPABILITIES 49
@@ -34,7 +35,8 @@ ahci_parse_dev_info(struct hba_device* dev_info, uint16_t* data)
         dev_info->block_size = 512;
     }
 
-    if ((*(data + IDDEV_OFFADDSUPPORT) & 0x8)) {
+    if ((*(data + IDDEV_OFFADDSUPPORT) & 0x8) &&
+        (*(data + IDDEV_OFFA48SUPPORT) & 0x400)) {
         dev_info->max_lba = *((uint64_t*)(data + IDDEV_OFFMAXLBA_EXT));
         dev_info->flags |= HBA_DEV_FEXTLBA;
     }
-- 
2.27.0