mirror of https://gitee.com/openkylin/linux.git
brcmsmac: request firmware in .start() callback
The firmware is requested from user-space. To assure the request is handled it is recommended to do the request upon IFF_UP. For a mac80211 driver the .start() callback can be considered the equivalent. Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Piotr Haber <phaber@broadcom.com> Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel
John W. Linville
parent
1527c343c1
commit
25b5632fb3
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@ -274,6 +274,130 @@ static void brcms_set_basic_rate(struct brcm_rateset *rs, u16 rate, bool is_br)
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}
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}
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/**
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* This function frees the WL per-device resources.
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*
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* This function frees resources owned by the WL device pointed to
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* by the wl parameter.
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*
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* precondition: can both be called locked and unlocked
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*
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*/
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static void brcms_free(struct brcms_info *wl)
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{
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struct brcms_timer *t, *next;
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/* free ucode data */
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if (wl->fw.fw_cnt)
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brcms_ucode_data_free(&wl->ucode);
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if (wl->irq)
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free_irq(wl->irq, wl);
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/* kill dpc */
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tasklet_kill(&wl->tasklet);
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if (wl->pub) {
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brcms_debugfs_detach(wl->pub);
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brcms_c_module_unregister(wl->pub, "linux", wl);
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}
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/* free common resources */
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if (wl->wlc) {
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brcms_c_detach(wl->wlc);
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wl->wlc = NULL;
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wl->pub = NULL;
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}
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/* virtual interface deletion is deferred so we cannot spinwait */
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/* wait for all pending callbacks to complete */
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while (atomic_read(&wl->callbacks) > 0)
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schedule();
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/* free timers */
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for (t = wl->timers; t; t = next) {
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next = t->next;
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#ifdef DEBUG
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kfree(t->name);
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#endif
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kfree(t);
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}
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}
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/*
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* called from both kernel as from this kernel module (error flow on attach)
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* precondition: perimeter lock is not acquired.
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*/
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static void brcms_remove(struct bcma_device *pdev)
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{
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struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
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struct brcms_info *wl = hw->priv;
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if (wl->wlc) {
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wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
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wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
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ieee80211_unregister_hw(hw);
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}
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brcms_free(wl);
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bcma_set_drvdata(pdev, NULL);
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ieee80211_free_hw(hw);
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}
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/*
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* Precondition: Since this function is called in brcms_pci_probe() context,
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* no locking is required.
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*/
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static void brcms_release_fw(struct brcms_info *wl)
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{
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int i;
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for (i = 0; i < MAX_FW_IMAGES; i++) {
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release_firmware(wl->fw.fw_bin[i]);
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release_firmware(wl->fw.fw_hdr[i]);
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}
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}
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/*
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* Precondition: Since this function is called in brcms_pci_probe() context,
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* no locking is required.
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*/
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static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
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{
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int status;
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struct device *device = &pdev->dev;
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char fw_name[100];
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int i;
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memset(&wl->fw, 0, sizeof(struct brcms_firmware));
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for (i = 0; i < MAX_FW_IMAGES; i++) {
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if (brcms_firmwares[i] == NULL)
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break;
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sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
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UCODE_LOADER_API_VER);
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status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
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if (status) {
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wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
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KBUILD_MODNAME, fw_name);
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return status;
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}
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sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
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UCODE_LOADER_API_VER);
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status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
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if (status) {
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wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
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KBUILD_MODNAME, fw_name);
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return status;
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}
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wl->fw.hdr_num_entries[i] =
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wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
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}
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wl->fw.fw_cnt = i;
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status = brcms_ucode_data_init(wl, &wl->ucode);
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brcms_release_fw(wl);
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return status;
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}
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static void brcms_ops_tx(struct ieee80211_hw *hw,
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struct ieee80211_tx_control *control,
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struct sk_buff *skb)
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@ -306,6 +430,14 @@ static int brcms_ops_start(struct ieee80211_hw *hw)
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if (!blocked)
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wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
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if (!wl->ucode.bcm43xx_bomminor) {
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err = brcms_request_fw(wl, wl->wlc->hw->d11core);
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if (err) {
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brcms_remove(wl->wlc->hw->d11core);
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return -ENOENT;
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}
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}
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spin_lock_bh(&wl->lock);
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/* avoid acknowledging frames before a non-monitor device is added */
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wl->mute_tx = true;
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@ -793,128 +925,6 @@ void brcms_dpc(unsigned long data)
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wake_up(&wl->tx_flush_wq);
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}
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/*
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* Precondition: Since this function is called in brcms_pci_probe() context,
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* no locking is required.
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*/
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static int brcms_request_fw(struct brcms_info *wl, struct bcma_device *pdev)
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{
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int status;
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struct device *device = &pdev->dev;
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char fw_name[100];
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int i;
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memset(&wl->fw, 0, sizeof(struct brcms_firmware));
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for (i = 0; i < MAX_FW_IMAGES; i++) {
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if (brcms_firmwares[i] == NULL)
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break;
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sprintf(fw_name, "%s-%d.fw", brcms_firmwares[i],
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UCODE_LOADER_API_VER);
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status = request_firmware(&wl->fw.fw_bin[i], fw_name, device);
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if (status) {
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wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
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KBUILD_MODNAME, fw_name);
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return status;
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}
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sprintf(fw_name, "%s_hdr-%d.fw", brcms_firmwares[i],
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UCODE_LOADER_API_VER);
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status = request_firmware(&wl->fw.fw_hdr[i], fw_name, device);
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if (status) {
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wiphy_err(wl->wiphy, "%s: fail to load firmware %s\n",
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KBUILD_MODNAME, fw_name);
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return status;
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}
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wl->fw.hdr_num_entries[i] =
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wl->fw.fw_hdr[i]->size / (sizeof(struct firmware_hdr));
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}
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wl->fw.fw_cnt = i;
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return brcms_ucode_data_init(wl, &wl->ucode);
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}
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/*
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* Precondition: Since this function is called in brcms_pci_probe() context,
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* no locking is required.
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*/
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static void brcms_release_fw(struct brcms_info *wl)
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{
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int i;
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for (i = 0; i < MAX_FW_IMAGES; i++) {
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release_firmware(wl->fw.fw_bin[i]);
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release_firmware(wl->fw.fw_hdr[i]);
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}
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}
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/**
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* This function frees the WL per-device resources.
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*
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* This function frees resources owned by the WL device pointed to
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* by the wl parameter.
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*
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* precondition: can both be called locked and unlocked
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*
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*/
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static void brcms_free(struct brcms_info *wl)
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{
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struct brcms_timer *t, *next;
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/* free ucode data */
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if (wl->fw.fw_cnt)
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brcms_ucode_data_free(&wl->ucode);
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if (wl->irq)
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free_irq(wl->irq, wl);
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/* kill dpc */
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tasklet_kill(&wl->tasklet);
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if (wl->pub) {
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brcms_debugfs_detach(wl->pub);
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brcms_c_module_unregister(wl->pub, "linux", wl);
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}
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/* free common resources */
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if (wl->wlc) {
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brcms_c_detach(wl->wlc);
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wl->wlc = NULL;
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wl->pub = NULL;
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}
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/* virtual interface deletion is deferred so we cannot spinwait */
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/* wait for all pending callbacks to complete */
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while (atomic_read(&wl->callbacks) > 0)
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schedule();
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/* free timers */
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for (t = wl->timers; t; t = next) {
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next = t->next;
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#ifdef DEBUG
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kfree(t->name);
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#endif
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kfree(t);
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}
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}
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/*
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* called from both kernel as from this kernel module (error flow on attach)
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* precondition: perimeter lock is not acquired.
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*/
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static void brcms_remove(struct bcma_device *pdev)
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{
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struct ieee80211_hw *hw = bcma_get_drvdata(pdev);
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struct brcms_info *wl = hw->priv;
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if (wl->wlc) {
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wiphy_rfkill_set_hw_state(wl->pub->ieee_hw->wiphy, false);
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wiphy_rfkill_stop_polling(wl->pub->ieee_hw->wiphy);
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ieee80211_unregister_hw(hw);
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}
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brcms_free(wl);
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bcma_set_drvdata(pdev, NULL);
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ieee80211_free_hw(hw);
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}
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static irqreturn_t brcms_isr(int irq, void *dev_id)
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{
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struct brcms_info *wl;
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@ -1047,18 +1057,8 @@ static struct brcms_info *brcms_attach(struct bcma_device *pdev)
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spin_lock_init(&wl->lock);
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spin_lock_init(&wl->isr_lock);
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/* prepare ucode */
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if (brcms_request_fw(wl, pdev) < 0) {
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wiphy_err(wl->wiphy, "%s: Failed to find firmware usually in "
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"%s\n", KBUILD_MODNAME, "/lib/firmware/brcm");
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brcms_release_fw(wl);
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brcms_remove(pdev);
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return NULL;
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}
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/* common load-time initialization */
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wl->wlc = brcms_c_attach((void *)wl, pdev, unit, false, &err);
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brcms_release_fw(wl);
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if (!wl->wlc) {
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wiphy_err(wl->wiphy, "%s: attach() failed with code %d\n",
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KBUILD_MODNAME, err);
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