/**
* 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.
*
* wl_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 wl_pci_probe() context, therefore no locking required.
*/
static struct wl_info *wl_attach(u16 vendor, u16 device, unsigned long regs,
uint bustype, void *btparam, uint irq)
{
struct wl_info *wl = NULL;
int unit, err;
unsigned long base_addr;
struct ieee80211_hw *hw;
u8 perm[ETH_ALEN];
unit = wl_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, wl_dpc, (unsigned long) wl);
base_addr = regs;
if (bustype == PCI_BUS) {
wl->piomode = false;
} else if (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 (wl_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");
wl_release_fw(wl);
wl_remove((struct pci_dev *)btparam);
return NULL;
}
/* common load-time initialization */
wl->wlc = wlc_attach((void *)wl, vendor, device, unit, wl->piomode,
wl->regsva, wl->bcm_bustype, btparam, &err);
wl_release_fw(wl);
if (!wl->wlc) {
wiphy_err(wl->wiphy, "%s: wlc_attach() failed with code %d\n",
KBUILD_MODNAME, err);
goto fail;
}
wl->pub = wlc_pub(wl->wlc);
wl->pub->ieee_hw = hw;
if (wlc_iovar_setint(wl->wlc, "mpc", 0)) {
wiphy_err(wl->wiphy, "wl%d: Error setting MPC variable to 0\n",
unit);
}
/* register our interrupt handler */
if (request_irq(irq, wl_isr, IRQF_SHARED, KBUILD_MODNAME, wl)) {
wiphy_err(wl->wiphy, "wl%d: request_irq() failed\n", unit);
goto fail;
}
wl->irq = irq;
/* register module */
wlc_module_register(wl->pub, NULL, "linux", wl, NULL, 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 = wl_set_hint(wl, wl->pub->srom_ccode);
else
err = wl_set_hint(wl, "US");
if (err) {
wiphy_err(wl->wiphy, "%s: regulatory_hint failed, status %d\n",
__func__, err);
}
wl_found++;
return wl;
fail:
wl_free(wl);
return NULL;
}
/*
* precondition: perimeter lock has been acquired
*/
void brcms_init(struct brcms_info *wl)
{
BCMMSG(wl->pub->ieee_hw->wiphy, "wl%d\n", wl->pub->unit);
brcms_reset(wl);
brcms_c_init(wl->wlc, wl->mute_tx);
}
