Re: [dpdk-dev] [PATCH v6 1/2] bus/pci: use PCI standard sysfs entry to get PIO address
From: 谢华伟(此时此刻） <hidden>
Date: 2021-02-21 15:58:45
On 2021/2/18 17:33, David Marchand wrote:
On Fri, Jan 29, 2021 at 4:19 AM 谢华伟(此时此刻） [off-list ref] wrote:quoted
From: "huawei.xhw" <redacted> Currently virtio PMD asssumes legacy device uses PIO bar. There are three ways to get PIO(PortIO) address for virtio legacy device. under igb_uio, get pio address from uio/uio# sysfs attribute under uio_pci_generic: for X86, get PIO address from /proc/ioport for other ARCH, get PIO address from standard PCI sysfs attribute Actually, igb_uio sysfs attribute exports exactly the same thing as standard PCI sysfs, i.e, pci_dev->resource[] This patch fixes these messy things, and uses standard PCI sysfs attribute.I can not find what is being fixed. Could you elaborate?
Maybe i wrongly use the word fix? With this patch, different drivers use the same way to get IO address for virtio device. Previously different driver get IO address with different method.