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[src-draft/trunk]: src/sys/dev/pci Revert rev 1.87 for now: iwm(4): Disentang...



details:   https://anonhg.NetBSD.org/src-all/rev/c9131d39b716
branches:  trunk
changeset: 364737:c9131d39b716
user:      Martin Husemann <martin%NetBSD.org@localhost>
date:      Wed Sep 15 19:46:37 2021 +0200

description:
Revert rev 1.87 for now: iwm(4): Disentangle attach.

diffstat:

 sys/dev/pci/if_iwm.c |  183 ++++++++++++++++++++++++++++----------------------
 1 files changed, 101 insertions(+), 82 deletions(-)

diffs (280 lines):

diff -r 8171435d25b8 -r c9131d39b716 sys/dev/pci/if_iwm.c
--- a/sys/dev/pci/if_iwm.c      Tue Sep 14 19:09:11 2021 +0200
+++ b/sys/dev/pci/if_iwm.c      Wed Sep 15 19:46:37 2021 +0200
@@ -482,7 +482,6 @@
 static int     iwm_preinit(struct iwm_softc *);
 static void    iwm_attach_hook(device_t);
 static void    iwm_attach(device_t, device_t, void *);
-static int     iwm_config_complete(struct iwm_softc *);
 #if 0
 static void    iwm_init_task(void *);
 static int     iwm_activate(device_t, enum devact);
@@ -6599,6 +6598,10 @@
        struct ieee80211com *ic = &sc->sc_ic;
        int err, i, ac;
 
+       err = iwm_preinit(sc);
+       if (err)
+               return err;
+
        err = iwm_start_hw(sc);
        if (err) {
                aprint_error_dev(sc->sc_dev, "could not initialize hardware\n");
@@ -6948,6 +6951,10 @@
 
        case SIOCADDMULTI:
        case SIOCDELMULTI:
+               if (!ISSET(sc->sc_flags, IWM_FLAG_ATTACHED)) {
+                       err = ENXIO;
+                       break;
+               }
                sa = ifreq_getaddr(SIOCADDMULTI, (struct ifreq *)data);
                err = (cmd == SIOCADDMULTI) ?
                    ether_addmulti(sa, &sc->sc_ec) :
@@ -6957,6 +6964,10 @@
                break;
 
        default:
+               if (!ISSET(sc->sc_flags, IWM_FLAG_ATTACHED)) {
+                       err = ether_ioctl(ifp, cmd, data);
+                       break;
+               }
                err = ieee80211_ioctl(ic, cmd, data);
                break;
        }
@@ -7717,8 +7728,13 @@
 static int
 iwm_preinit(struct iwm_softc *sc)
 {
+       struct ieee80211com *ic = &sc->sc_ic;
+       struct ifnet *ifp = IC2IFP(&sc->sc_ic);
        int err;
 
+       if (ISSET(sc->sc_flags, IWM_FLAG_ATTACHED))
+               return 0;
+
        err = iwm_start_hw(sc);
        if (err) {
                aprint_error_dev(sc->sc_dev, "could not initialize hardware\n");
@@ -7730,10 +7746,44 @@
        if (err)
                return err;
 
+       sc->sc_flags |= IWM_FLAG_ATTACHED;
+
        aprint_normal_dev(sc->sc_dev, "hw rev 0x%x, fw ver %s, address %s\n",
            sc->sc_hw_rev & IWM_CSR_HW_REV_TYPE_MSK, sc->sc_fwver,
            ether_sprintf(sc->sc_nvm.hw_addr));
 
+#ifndef IEEE80211_NO_HT
+       if (sc->sc_nvm.sku_cap_11n_enable)
+               iwm_setup_ht_rates(sc);
+#endif
+
+       /* not all hardware can do 5GHz band */
+       if (sc->sc_nvm.sku_cap_band_52GHz_enable)
+               ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_std_rateset_11a;
+
+       ether_ifdetach(ifp);
+       /*
+        * XXX
+        * ether_ifdetach() overwrites ifp->if_ioctl, so restore it here.
+        */
+       ifp->if_ioctl = iwm_ioctl;
+       ieee80211_ifattach(ic);
+
+       ic->ic_node_alloc = iwm_node_alloc;
+
+       /* Override 802.11 state transition machine. */
+       sc->sc_newstate = ic->ic_newstate;
+       ic->ic_newstate = iwm_newstate;
+
+       /* XXX media locking needs revisiting */
+       mutex_init(&sc->sc_media_mtx, MUTEX_DEFAULT, IPL_SOFTNET);
+       ieee80211_media_init_with_lock(ic,
+           iwm_media_change, ieee80211_media_status, &sc->sc_media_mtx);
+
+       ieee80211_announce(ic);
+
+       iwm_radiotap_attach(sc);
+
        return 0;
 }
 
@@ -7742,7 +7792,7 @@
 {
        struct iwm_softc *sc = device_private(dev);
 
-       iwm_config_complete(sc);
+       iwm_preinit(sc);
 }
 
 static void
@@ -7750,6 +7800,8 @@
 {
        struct iwm_softc *sc = device_private(self);
        struct pci_attach_args *pa = aux;
+       struct ieee80211com *ic = &sc->sc_ic;
+       struct ifnet *ifp = &sc->sc_ec.ec_if;
        pcireg_t reg, memtype;
        char intrbuf[PCI_INTRSTR_LEN];
        const char *intrstr;
@@ -8029,60 +8081,6 @@
                }
        }
 
-       callout_init(&sc->sc_calib_to, 0);
-       callout_setfunc(&sc->sc_calib_to, iwm_calib_timeout, sc);
-       callout_init(&sc->sc_led_blink_to, 0);
-       callout_setfunc(&sc->sc_led_blink_to, iwm_led_blink_timeout, sc);
-#ifndef IEEE80211_NO_HT
-       if (workqueue_create(&sc->sc_setratewq, "iwmsr",
-           iwm_setrates_task, sc, PRI_NONE, IPL_NET, 0))
-               panic("%s: could not create workqueue: setrates",
-                   device_xname(self));
-       if (workqueue_create(&sc->sc_bawq, "iwmba",
-           iwm_ba_task, sc, PRI_NONE, IPL_NET, 0))
-               panic("%s: could not create workqueue: blockack",
-                   device_xname(self));
-       if (workqueue_create(&sc->sc_htprowq, "iwmhtpro",
-           iwm_htprot_task, sc, PRI_NONE, IPL_NET, 0))
-               panic("%s: could not create workqueue: htprot",
-                   device_xname(self));
-#endif
-
-       /*
-        * We can't do normal attach before the file system is mounted
-        * because we cannot read the MAC address without loading the
-        * firmware from disk.  So we postpone until mountroot is done.
-        * Notably, this will require a full driver unload/load cycle
-        * (or reboot) in case the firmware is not present when the
-        * hook runs.
-        */
-       config_mountroot(self, iwm_attach_hook);
-
-       return;
-
-fail5: while (--txq_i >= 0)
-               iwm_free_tx_ring(sc, &sc->txq[txq_i]);
-fail4: iwm_dma_contig_free(&sc->sched_dma);
-fail3: if (sc->ict_dma.vaddr != NULL)
-               iwm_dma_contig_free(&sc->ict_dma);
-fail2: iwm_dma_contig_free(&sc->kw_dma);
-fail1: iwm_dma_contig_free(&sc->fw_dma);
-}
-
-static int
-iwm_config_complete(struct iwm_softc *sc)
-{
-       device_t self = sc->sc_dev;
-       struct ieee80211com *ic = &sc->sc_ic;
-       struct ifnet *ifp = &sc->sc_ec.ec_if;
-       int err;
-
-       KASSERT(!ISSET(sc->sc_flags, IWM_FLAG_ATTACHED));
-
-       err = iwm_preinit(sc);
-       if (err)
-               return err;
-
        /*
         * Attach interface
         */
@@ -8114,15 +8112,6 @@
        ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b;
        ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g;
 
-       /* not all hardware can do 5GHz band */
-       if (sc->sc_nvm.sku_cap_band_52GHz_enable)
-               ic->ic_sup_rates[IEEE80211_MODE_11A] = ieee80211_std_rateset_11a;
-
-#ifndef IEEE80211_NO_HT
-       if (sc->sc_nvm.sku_cap_11n_enable)
-               iwm_setup_ht_rates(sc);
-#endif
-
        for (int i = 0; i < __arraycount(sc->sc_phyctxt); i++) {
                sc->sc_phyctxt[i].id = i;
        }
@@ -8148,34 +8137,64 @@
        memcpy(ifp->if_xname, DEVNAME(sc), IFNAMSIZ);
 
        if_initialize(ifp);
+#if 0
        ieee80211_ifattach(ic);
+#else
+       /*
+        * XXX
+        * To avoid setting ifp->if_hwdl in if_set_sadl(), we fake
+        *  ic->ic_myaddr as local address.
+        */
+       ic->ic_myaddr[0] = 0x02;
+       ether_ifattach(ifp,  ic->ic_myaddr);    /* XXX */
+#endif
        /* Use common softint-based if_input */
        ifp->if_percpuq = if_percpuq_create(ifp);
        if_register(ifp);
 
-       ic->ic_node_alloc = iwm_node_alloc;
-
-       /* Override 802.11 state transition machine. */
-       sc->sc_newstate = ic->ic_newstate;
-       ic->ic_newstate = iwm_newstate;
-
-       /* XXX media locking needs revisiting */
-       mutex_init(&sc->sc_media_mtx, MUTEX_DEFAULT, IPL_SOFTNET);
-       ieee80211_media_init_with_lock(ic,
-           iwm_media_change, ieee80211_media_status, &sc->sc_media_mtx);
-
-       ieee80211_announce(ic);
-
-       iwm_radiotap_attach(sc);
+       callout_init(&sc->sc_calib_to, 0);
+       callout_setfunc(&sc->sc_calib_to, iwm_calib_timeout, sc);
+       callout_init(&sc->sc_led_blink_to, 0);
+       callout_setfunc(&sc->sc_led_blink_to, iwm_led_blink_timeout, sc);
+#ifndef IEEE80211_NO_HT
+       if (workqueue_create(&sc->sc_setratewq, "iwmsr",
+           iwm_setrates_task, sc, PRI_NONE, IPL_NET, 0))
+               panic("%s: could not create workqueue: setrates",
+                   device_xname(self));
+       if (workqueue_create(&sc->sc_bawq, "iwmba",
+           iwm_ba_task, sc, PRI_NONE, IPL_NET, 0))
+               panic("%s: could not create workqueue: blockack",
+                   device_xname(self));
+       if (workqueue_create(&sc->sc_htprowq, "iwmhtpro",
+           iwm_htprot_task, sc, PRI_NONE, IPL_NET, 0))
+               panic("%s: could not create workqueue: htprot",
+                   device_xname(self));
+#endif
 
        if (pmf_device_register(self, NULL, NULL))
                pmf_class_network_register(self, ifp);
        else
                aprint_error_dev(self, "couldn't establish power handler\n");
 
-       sc->sc_flags |= IWM_FLAG_ATTACHED;
-
-       return 0;
+       /*
+        * We can't do normal attach before the file system is mounted
+        * because we cannot read the MAC address without loading the
+        * firmware from disk.  So we postpone until mountroot is done.
+        * Notably, this will require a full driver unload/load cycle
+        * (or reboot) in case the firmware is not present when the
+        * hook runs.
+        */
+       config_mountroot(self, iwm_attach_hook);
+
+       return;
+
+fail5: while (--txq_i >= 0)
+               iwm_free_tx_ring(sc, &sc->txq[txq_i]);
+fail4: iwm_dma_contig_free(&sc->sched_dma);
+fail3: if (sc->ict_dma.vaddr != NULL)
+               iwm_dma_contig_free(&sc->ict_dma);
+fail2: iwm_dma_contig_free(&sc->kw_dma);
+fail1: iwm_dma_contig_free(&sc->fw_dma);
 }
 
 void



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