[dpdk-dev] [PATCH v6 1/2] bus/pci: use PCI standard sysfs entry to get PIO address

[Maxime Coquelin]

On 1/29/21 4:18 AM, 谢华伟(此时此刻） wrote:
> From: "huawei.xhw" <huawei.xhw at alibaba-inc.com>
> 
> 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 <huawei.xhw at alibaba-inc.com>
> Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> ---
>  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 <maxime.coquelin at redhat.com>