[PATCH:libpciaccess] Implement the kernel_has_driver() method for NetBSD.

[Matthieu Herrb]

B0;309;0cOn Sat, Jul 26, 2014 at 10:10:28PM +0200, Thomas Klausner wrote:
> From: Matthew Green <mrg at NetBSD.org>
> 
> This has the benefit of stopping the "vesa" driver from loading on
> hardware that has been claimed by a kernel driver and thus shouldn't
> be using "vesa".
> 
> Signed-off-by: Thomas Klausner <wiz at NetBSD.org>

sorry for beeing that late. 

Reviewed-by: Matthieu Herrb <matthieu at herrb.eu>

> ---
>  src/netbsd_pci.c | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
> 
> diff --git a/src/netbsd_pci.c b/src/netbsd_pci.c
> index e6dae4c..52591b0 100644
> --- a/src/netbsd_pci.c
> +++ b/src/netbsd_pci.c
> @@ -843,6 +843,29 @@ pci_device_netbsd_unmap_legacy(struct pci_device *dev, void *addr,
>  	return pci_device_netbsd_unmap_range(dev, &map);
>  }
>  
> +static int
> +pci_device_netbsd_has_kernel_driver(struct pci_device *dev)
> +{
> +#ifdef PCI_IOC_DRVNAME
> +	/*
> +	 * NetBSD PCI_IOC_DRVNAME appears at the same time as pci_drvname(3)
> +	 */
> +	char drvname[16];
> +
> +	if (dev->bus >= nbuses)
> +		return 0;
> +
> +	/*
> +	 * vga(4) should be considered "not bound".
> +	 */
> +	if (pci_drvname(buses[dev->bus].fd, dev->dev, dev->func,
> +			drvname, sizeof drvname) == 0 &&
> +	    strncmp(drvname, "vga", 3) != 0)
> +		return 1;
> +#endif
> +	return 0;
> +}
> +
>  static const struct pci_system_methods netbsd_pci_methods = {
>  	.destroy = pci_system_netbsd_destroy,
>  	.destroy_device = NULL,
> @@ -867,6 +890,7 @@ static const struct pci_system_methods netbsd_pci_methods = {
>  	.write8 = pci_device_netbsd_write8,
>  	.map_legacy = pci_device_netbsd_map_legacy,
>  	.unmap_legacy = pci_device_netbsd_unmap_legacy,
> +	.has_kernel_driver = pci_device_netbsd_has_kernel_driver,
>  };
>  
>  int
> -- 
> 1.9.4
> 
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-- 
Matthieu Herrb