On 1/29/21 4:18 AM, 谢华伟(此时此刻） wrote:

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.

Signed-off-by: huawei xie <redacted>
Reviewed-by: Maxime Coquelin <redacted>
---
 drivers/bus/pci/linux/pci.c     | 77 -----------------------------------------
 drivers/bus/pci/linux/pci_uio.c | 64 ++++++++++++++++++++++++----------
 2 files changed, 46 insertions(+), 95 deletions(-)

Reviewed-by: Maxime Coquelin <redacted>