Exemple #1
0
/**
 * attach to the WL device.
 *
 * Attach to the WL device identified by vendor and device parameters.
 * regs is a host accessible memory address pointing to WL device registers.
 *
 * is called in brcms_bcma_probe() context, therefore no locking required.
 */
static struct brcms_info *brcms_attach(struct bcma_device *pdev)
{
	struct brcms_info *wl = NULL;
	int unit, err;
	struct ieee80211_hw *hw;
	u8 perm[ETH_ALEN];

	unit = n_adapters_found;
	err = 0;

	if (unit < 0)
		return NULL;

	/* allocate private info */
	hw = bcma_get_drvdata(pdev);
	if (hw != NULL)
		wl = hw->priv;
	if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
		return NULL;
	wl->wiphy = hw->wiphy;

	atomic_set(&wl->callbacks, 0);

	init_waitqueue_head(&wl->tx_flush_wq);

	/* setup the bottom half handler */
	tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);

	spin_lock_init(&wl->lock);
	spin_lock_init(&wl->isr_lock);

	/* common load-time initialization */
	wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
	if (!wl->wlc) {
		wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
			  KBUILD_MODNAME, err);
		goto fail;
	}
	wl->pub = brcms_c_pub(wl->wlc);

	wl->pub->ieee_hw = hw;

	/* register our interrupt handler */
	if (request_irq(pdev->irq, brcms_isr,
			IRQF_SHARED, KBUILD_MODNAME, wl)) {
		wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
		goto fail;
	}
	wl->irq = pdev->irq;

	/* register module */
	brcms_c_module_register(wl->pub, "linux", wl, NULL);

	if (ieee_hw_init(hw)) {
		wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
			  __func__);
		goto fail;
	}

	brcms_c_regd_init(wl->wlc);

	memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
	if (WARN_ON(!is_valid_ether_addr(perm)))
		goto fail;
	SET_IEEE80211_PERM_ADDR(hw, perm);

	err = ieee80211_register_hw(hw);
	if (err)
		wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
			  "%d\n", __func__, err);

	if (wl->pub->srom_ccode[0] &&
	    regulatory_hint(wl->wiphy, wl->pub->srom_ccode))
		wiphy_err(wl->wiphy, "%s: regulatory hint failed\n", __func__);

	brcms_debugfs_attach(wl->pub);
	brcms_debugfs_create_files(wl->pub);
	n_adapters_found++;
	return wl;

fail:
	brcms_free(wl);
	return NULL;
}
Exemple #2
0
/**
 * attach to the WL device.
 *
 * Attach to the WL device identified by vendor and device parameters.
 * regs is a host accessible memory address pointing to WL device registers.
 *
 * brcms_attach is not defined as static because in the case where no bus
 * is defined, wl_attach will never be called, and thus, gcc will issue
 * a warning that this function is defined but not used if we declare
 * it as static.
 *
 *
 * is called in brcms_pci_probe() context, therefore no locking required.
 */
static struct brcms_info *brcms_attach(u16 vendor, u16 device,
				       unsigned long regs,
			    uint bustype, void *btparam, uint irq)
{
	struct brcms_info *wl = NULL;
	int unit, err;
	unsigned long base_addr;
	struct ieee80211_hw *hw;
	u8 perm[ETH_ALEN];

	unit = n_adapters_found;
	err = 0;

	if (unit < 0) {
		return NULL;
	}

	/* allocate private info */
	hw = pci_get_drvdata(btparam);	/* btparam == pdev */
	if (hw != NULL)
		wl = hw->priv;
	if (WARN_ON(hw == NULL) || WARN_ON(wl == NULL))
		return NULL;
	wl->wiphy = hw->wiphy;

	atomic_set(&wl->callbacks, 0);

	/* setup the bottom half handler */
	tasklet_init(&wl->tasklet, brcms_dpc, (unsigned long) wl);



	base_addr = regs;

	if (bustype == PCI_BUS || bustype == RPC_BUS) {
		/* Do nothing */
	} else {
		bustype = PCI_BUS;
		BCMMSG(wl->wiphy, "force to PCI\n");
	}
	wl->bcm_bustype = bustype;

	wl->regsva = ioremap_nocache(base_addr, PCI_BAR0_WINSZ);
	if (wl->regsva == NULL) {
		wiphy_err(wl->wiphy, "wl%d: ioremap() failed\n", unit);
		goto fail;
	}
	spin_lock_init(&wl->lock);
	spin_lock_init(&wl->isr_lock);

	/* prepare ucode */
	if (brcms_request_fw(wl, (struct pci_dev *)btparam) < 0) {
		wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
			  "%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
		brcms_release_fw(wl);
		brcms_remove((struct pci_dev *)btparam);
		return NULL;
	}

	/* common load-time initialization */
	wl->wlc = brcms_c_attach((void *)wl, vendor, device, unit, false,
			     wl->regsva, wl->bcm_bustype, btparam, &err);
	brcms_release_fw(wl);
	if (!wl->wlc) {
		wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
			  KBUILD_MODNAME, err);
		goto fail;
	}
	wl->pub = brcms_c_pub(wl->wlc);

	wl->pub->ieee_hw = hw;

	if (brcms_c_set_par(wl->wlc, IOV_MPC, 0) < 0) {
		wiphy_err(wl->wiphy, "wl%d: Error setting MPC variable to 0\n",
			  unit);
	}

	/* register our interrupt handler */
	if (request_irq(irq, brcms_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
		wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
		goto fail;
	}
	wl->irq = irq;

	/* register module */
	brcms_c_module_register(wl->pub, "linux", wl, wl_linux_watchdog, NULL);

	if (ieee_hw_init(hw)) {
		wiphy_err(wl->wiphy, "wl%d: %s: ieee_hw_init failed!\n", unit,
			  __func__);
		goto fail;
	}

	memcpy(perm, &wl->pub->cur_etheraddr, ETH_ALEN);
	if (WARN_ON(!is_valid_ether_addr(perm)))
		goto fail;
	SET_IEEE80211_PERM_ADDR(hw, perm);

	err = ieee80211_register_hw(hw);
	if (err) {
		wiphy_err(wl->wiphy, "%s: ieee80211_register_hw failed, status"
			  "%d\n", __func__, err);
	}

	if (wl->pub->srom_ccode[0])
		err = brcms_set_hint(wl, wl->pub->srom_ccode);
	else
		err = brcms_set_hint(wl, "US");
	if (err) {
		wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
			  __func__, err);
	}

	n_adapters_found++;
	return wl;

fail:
	brcms_free(wl);
	return NULL;
}