On Tue, Oct 11, 2016 at 04:50:09PM +0200, Stefan Sperling wrote:
> On Tue, Oct 11, 2016 at 04:29:24PM +0200, Imre Vadasz wrote:
> > Hi,
> >
> > The sc->sc_uc.uc_intr flag isn't getting reset to 0 in
> > iwm_load_firmware_8000(), so the
> > /* wait for the firmware to load */
> > for (w = 0; !sc->sc_uc.uc_intr && w < 10; w++) {
> > err = tsleep(&sc->sc_uc, 0, "iwmuc", hz/10);
> > }
> > loop is immediately aborting on AC8260 hardware without properly waiting
> > for the IWM_ALIVE notification (except on the very first time a firmware
> > was loaded). This issue was workarounded by the fixed 1s tsleep afterwards.
> > /*
> > * Give the firmware some time to initialize.
> > * Accessing it too early causes errors.
> > */
> > tsleep(&w, PCATCH, "iwmfwinit", hz);
> >
> >
> > Everything works fine in iwm(4) without that 1s tsleep if I also reset
> > sc->sc_uc.uc_intr in the family 8000 case.
>
> Thank you! OK stsp@ (I can't test + commit this myself right now.)
I have committed this. Thanks again.
> >
> > Index: sys/dev/pci/if_iwm.c
> > ===================================================================
> > RCS file: /cvs/src/sys/dev/pci/if_iwm.c,v
> > retrieving revision 1.144
> > diff -u -r1.144 if_iwm.c
> > --- sys/dev/pci/if_iwm.c 8 Oct 2016 14:37:48 -0000 1.144
> > +++ sys/dev/pci/if_iwm.c 11 Oct 2016 14:08:05 -0000
> > @@ -2820,8 +2820,6 @@
> > uint32_t dlen;
> > uint32_t offset;
> >
> > - sc->sc_uc.uc_intr = 0;
> > -
> > fws = &sc->sc_fw.fw_sects[ucode_type];
> > for (i = 0; i < fws->fw_count; i++) {
> > data = fws->fw_sect[i].fws_data;
> > @@ -2924,7 +2922,6 @@
> > int first_ucode_section;
> >
> > fws = &sc->sc_fw.fw_sects[ucode_type];
> > -
> > /* configure the ucode to be ready to get the secured image */
> > /* release CPU reset */
> > iwm_write_prph(sc, IWM_RELEASE_CPU_RESET, IWM_RELEASE_CPU_RESET_BIT);
> > @@ -2943,6 +2940,8 @@
> > {
> > int err, w;
> >
> > + sc->sc_uc.uc_intr = 0;
> > +
> > if (sc->sc_device_family == IWM_DEVICE_FAMILY_8000)
> > err = iwm_load_firmware_8000(sc, ucode_type);
> > else
> > @@ -2957,12 +2956,6 @@
> > }
> > if (err || !sc->sc_uc.uc_ok)
> > printf("%s: could not load firmware\n", DEVNAME(sc));
> > -
> > - /*
> > - * Give the firmware some time to initialize.
> > - * Accessing it too early causes errors.
> > - */
> > - tsleep(&w, PCATCH, "iwmfwinit", hz);
> >
> > return err;
> > }
> >
>
