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Code Issues Releases Wiki Activity

fix:在smp模块中增加mfence

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This commit is contained in:
fslongjin
2022-08-01 23:18:54 +08:00
parent 83152c176b
commit 8bd6e981f0
8 changed files with 136 additions and 71 deletions
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8
kernel/driver/usb/usb.c
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@ -8,8 +8,7 @@
extern spinlock_t xhci_controller_init_lock; // xhci控制器初始化锁
#define MAX_USB_NUM 8 // pci总线上的usb设备的最大数量
#pragma GCC push_options
#pragma GCC optimize("O0")
// 在pci总线上寻找到的usb设备控制器的header
static struct pci_device_structure_header_t *usb_pdevs[MAX_USB_NUM];
static int usb_pdevs_count = 0;
@ -35,6 +34,7 @@ void usb_init()
// 初始化每个usb控制器
for (int i = 0; i < usb_pdevs_count; ++i)
{
io_mfence();
switch (usb_pdevs[i]->ProgIF)
{
case USB_TYPE_UHCI:
@ -48,6 +48,7 @@ void usb_init()
case USB_TYPE_XHCI:
// 初始化对应的xhci控制器
xhci_init((struct pci_device_structure_general_device_t *)usb_pdevs[i]);
io_mfence();
break;
default:
@ -57,5 +58,4 @@ void usb_init()
}
}
kinfo("Successfully initialized all usb host controllers!");
}
#pragma GCC pop_options
}