On Sun, Mar 01, 2015 at 04:21:10PM +0200, Raz Amir wrote: > Can you refer me to the logging facilities you are referring to for this > Freebsd driver? > device_probe_and_attach is an API in Freebsd kernel which is called during rte_log and friends.
> boot for finding the relevant driver for each device. > I added manual call to it in the driver unload for re-probing and > re-matching the devices that were detached by the driver. > Before this change, you had to reboot in order to get the devices back. > my bad, I didn't see it defined and was thinking it was removed from an earlier version of the dpdk. Neil > -----Original Message----- > From: Neil Horman [mailto:nhorman at tuxdriver.com] > Sent: 01 March 2015 15:48 > To: Raz Amir > Cc: dev at dpdk.org > Subject: Re: [dpdk-dev] [PATCH] pci: save list of detached devices, and > re-probe during driver unload > > On Thu, Feb 26, 2015 at 06:33:20AM +0000, Raz Amir wrote: > > Added code that saves the pointers to the detached devices, during > > driver loading, and during driver unloading, go over the list, > > and re-attach them by calling device_probe_and_attach > > on each device. > > > > Signed-off-by: Raz Amir <razamir22 at gmail.com> > > --- > > lib/librte_eal/bsdapp/nic_uio/nic_uio.c | 26 +++++++++++++++++++++++++- > > 1 file changed, 25 insertions(+), 1 deletion(-) > > > > diff --git a/lib/librte_eal/bsdapp/nic_uio/nic_uio.c > b/lib/librte_eal/bsdapp/nic_uio/nic_uio.c > > index 5ae8560..7d702a5 100644 > > --- a/lib/librte_eal/bsdapp/nic_uio/nic_uio.c > > +++ b/lib/librte_eal/bsdapp/nic_uio/nic_uio.c > > @@ -55,6 +55,9 @@ __FBSDID("$FreeBSD$"); > > > > #define MAX_BARS (PCIR_MAX_BAR_0 + 1) > > > > +#define MAX_DETACHED_DEVICES 128 > > +static device_t detached_devices[MAX_DETACHED_DEVICES] = {}; > > +static int last_detached = 0; > > > > struct nic_uio_softc { > > device_t dev_t; > > @@ -291,14 +294,35 @@ nic_uio_load(void) > > if (dev != NULL) > > for (i = 0; i < NUM_DEVICES; i++) > > if (pci_get_vendor(dev) == devices[i].vend > && > > - pci_get_device(dev) == > devices[i].dev) > > + pci_get_device(dev) == > devices[i].dev) { > > + if (last_detached+1 > < MAX_DETACHED_DEVICES) { > > + > printf("nic_uio_load: detaching and storing dev=%p\n", dev); > No printfs. Use the logging facilities > > > + > detached_devices[last_detached++] = dev; > > + } > > + else { > > + > printf("nic_uio_load: reached MAX_DETACHED_DEVICES=%d. dev=%p won't be > reattached\n", > > + > MAX_DETACHED_DEVICES, dev); > Dittto > > > + } > > + > > device_detach(dev); > > + } > > } > > } > > > > static void > > nic_uio_unload(void) > > { > > + int i; > > + printf("nic_uio_unload: entered ... \n"); > > + > > + for (i = 0; i < last_detached; i++) { > > + printf("nic_uio_unload: calling to device_probe_and_attach > for dev=%p...\n", > > + detached_devices[i]); > > + device_probe_and_attach(detached_devices[i]); > Where is this defined? It doesn't appear to be in the latest dpdk. > > > + printf("nic_uio_unload: done.\n"); > > + } > > + > > + printf("nic_uio_unload: leaving ... \n"); > > } > > > > static int > > -- > > 2.1.2 > > > > > >
