wrh/chrg
1
0
Fork 0
forked from chrg/chrg
Code Pull Requests Activity

first commit for chrg

Browse Source
This commit is contained in:
wmano
2025-08-16 22:58:22 +08:00
commit 52a3ed5862
2306 changed files with 1021208 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
rt-thread/components/drivers/pci/msi/device.c
+46
View File
@@ -0,0 +1,46 @@
/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-10-24 GuEe-GUI first version
*/
#include <drivers/pci.h>
void rt_pci_msi_init(struct rt_pci_device *pdev)
{
if (pdev && (pdev->msi_cap = rt_pci_find_capability(pdev, PCIY_MSI)))
{
rt_uint16_t ctrl;
rt_pci_read_config_u16(pdev, pdev->msi_cap + PCIR_MSI_CTRL, &ctrl);
if (ctrl & PCIM_MSICTRL_MSI_ENABLE)
{
rt_pci_write_config_u16(pdev, pdev->msi_cap + PCIR_MSI_CTRL, ctrl & ~PCIM_MSICTRL_MSI_ENABLE);
}
if (!(ctrl & PCIM_MSICTRL_64BIT))
{
pdev->no_64bit_msi = RT_TRUE;
}
}
}
void rt_pci_msix_init(struct rt_pci_device *pdev)
{
if (pdev && (pdev->msix_cap = rt_pci_find_capability(pdev, PCIY_MSIX)))
{
rt_uint16_t ctrl;
rt_pci_read_config_u16(pdev, pdev->msix_cap + PCIR_MSIX_CTRL, &ctrl);
if (ctrl & PCIM_MSIXCTRL_MSIX_ENABLE)
{
rt_pci_write_config_u16(pdev, pdev->msix_cap + PCIR_MSIX_CTRL, ctrl & ~PCIM_MSIXCTRL_MSIX_ENABLE);
}
}
}