On 6/26/2018 2:25 PM, Alejandro Lucero wrote:
> Getting the bar size is required for NFP CPP interface configuration.
> However, this information can be obtained from the VFIO or UIO driver
> instead of accessing the sysfs resource file.
>
> Signed-off-by: Alejandro Lucero <alejandro.luc...@netronome.com>
> ---
> drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c | 27 +++++----------------------
> 1 file changed, 5 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c
> b/drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c
> index 2a1ec96..b0beb8d 100644
> --- a/drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c
> +++ b/drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c
> @@ -762,33 +762,16 @@ struct nfp6000_area_priv {
> }
>
> static int
> -nfp6000_set_barsz(struct nfp_pcie_user *desc)
> +nfp6000_set_barsz(struct rte_pci_device *dev, struct nfp_pcie_user *desc)
Need to update caller of this function.
> {
> - char tmp_str[80];
> - unsigned long start, end, flags, tmp;
> - int i;
> - FILE *fp;
> -
> - snprintf(tmp_str, sizeof(tmp_str), "%s/%s/resource", PCI_DEVICES,
> - desc->busdev);
> -
> - fp = fopen(tmp_str, "r");
> - if (!fp)
> - return -1;
> + unsigned long tmp;
> + int i = 0;
>
> - if (fscanf(fp, "0x%lx 0x%lx 0x%lx", &start, &end, &flags) == 0) {
> - printf("error reading resource file for bar size\n");
> - fclose(fp);
> - return -1;
> - }
> + tmp = dev->mem_resource[0].len;
>
> - if (fclose(fp) == -1)
> - return -1;
> -
> - tmp = (end - start) + 1;
> - i = 0;
> while (tmp >>= 1)
> i++;
> +
> desc->barsz = i;
> return 0;
> }
>
