Hi Geert,
On 08/07/2018 05:00 PM, Geert Uytterhoeven wrote:
> Hi Eric,
>
> On Tue, Aug 7, 2018 at 4:18 PM Auger Eric <[email protected]> wrote:
>> On 07/25/2018 04:34 PM, Geert Uytterhoeven wrote:
>>> From: Auger Eric <[email protected]>
>>>
>>> Up to now the vfio-platform device has been abstract and could not be
>>> instantiated. The integration of a new vfio platform device required
>>> creating a dummy derived device which only set the compatible string.
>>>
>>> Following the few vfio-platform device integrations we have seen the
>>> actual requested adaptation happens on device tree node creation
>>> (sysbus-fdt).
>>>
>>> Hence remove the abstract setting, and read the list of compatible
>>> values from sysfs if not set by a derived device.
>>>
>>> Update the amd-xgbe and calxeda-xgmac drivers to fill in the number of
>>> compatible values, as there can now be more than one.
>>>
>>> Note that sysbus-fdt does not support the instantiation of the
>>> vfio-platform device yet.
>>>
>>> Signed-off-by: Eric Auger <[email protected]>
>>> [geert: Rebase, set user_creatable=true, use compatible values in sysfs
>>> instead of user-supplied manufacturer/model options, reword]
>>> Signed-off-by: Geert Uytterhoeven <[email protected]>
>>> ---
>>> v3:
>>> - Read all compatible values from sysfs instead of using user-supplied
>>> manufacturer and model options,
>>> - Reword patch description,
>>> - Drop RFC state,
>>>
>>> v2:
>>> - No changes,
>>>
>>> v1:
>>> - Rebase, Set user_creatable=true,
>>>
>>> v0:
>>> - Original version from Eric.
>
>>> --- a/hw/vfio/platform.c
>>> +++ b/hw/vfio/platform.c
>>> @@ -655,6 +655,25 @@ static void vfio_platform_realize(DeviceState *dev,
>>> Error **errp)
>>> goto out;
>>> }
>>>
>>> + if (!vdev->compat) {
>>> + gchar *contents;
>>> + gsize length;
>>> + char *tmp;
>>> +
>>> + tmp = g_strdup_printf("%s/of_node/compatible", vbasedev->sysfsdev);
>>> + if (!g_file_get_contents(tmp, &contents, &length, NULL)) {
>>> + error_report("failed to load \"%s\"", tmp);
>>> + exit(1);
>> You should set errp instead so that the error gets properly propagated.
>
> Thanks, will do.
>
>>> --- a/include/hw/vfio/vfio-platform.h
>>> +++ b/include/hw/vfio/vfio-platform.h
>>> @@ -54,7 +54,8 @@ typedef struct VFIOPlatformDevice {
>>> QLIST_HEAD(, VFIOINTp) intp_list; /* list of IRQs */
>>> /* queue of pending IRQs */
>>> QSIMPLEQ_HEAD(pending_intp_queue, VFIOINTp) pending_intp_queue;
>>> - char *compat; /* compatibility string */
>>> + char *compat; /* DT compatible values, separated by NUL */
>> by NULL characters?
>
> "NUL" is the character ('\0'), "NULL" is the pointer.
Ah OK ;-)
Thanks
Eric
>
> Gr{oetje,eeting}s,
>
> Geert
>
