different interface types, and for supporting asynchronous
firmware loading.
Based on a patch from Pradeep Nemavat <pnemavat@marvell.com>
and Yogesh Powar <yogeshp@marvell.com>
Signed-off-by: Brian Cavagnolo <brian@cozybit.com>
---
drivers/net/wireless/mwl8k.c | 345 ++++++++++++++++++++++++++----------------
1 files changed, 214 insertions(+), 131 deletions(-)
@@ -3942,73 +3942,10 @@ static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
};
MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
-static int __devinit mwl8k_probe(struct pci_dev *pdev,
- const struct pci_device_id *id)
+static int mwl8k_init_firmware(struct ieee80211_hw *hw)
{
- static int printed_version = 0;
- struct ieee80211_hw *hw;
- struct mwl8k_priv *priv;
+ struct mwl8k_priv *priv = hw->priv;
int rc;
- int i;
-
- if (!printed_version) {
- printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
- printed_version = 1;
- }
-
-
- rc = pci_enable_device(pdev);
- if (rc) {
- printk(KERN_ERR "%s: Cannot enable new PCI device\n",
- MWL8K_NAME);
- return rc;
- }
-
- rc = pci_request_regions(pdev, MWL8K_NAME);
- if (rc) {
- printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
- MWL8K_NAME);
- goto err_disable_device;
- }
-
- pci_set_master(pdev);
-
-
- hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
- if (hw == NULL) {
- printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
- rc = -ENOMEM;
- goto err_free_reg;
- }
-
- SET_IEEE80211_DEV(hw, &pdev->dev);
- pci_set_drvdata(pdev, hw);
-
- priv = hw->priv;
- priv->hw = hw;
- priv->pdev = pdev;
- priv->device_info = &mwl8k_info_tbl[id->driver_data];
-
-
- priv->sram = pci_iomap(pdev, 0, 0x10000);
- if (priv->sram == NULL) {
- wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
- goto err_iounmap;
- }
-
- /*
- * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
- * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
- */
- priv->regs = pci_iomap(pdev, 1, 0x10000);
- if (priv->regs == NULL) {
- priv->regs = pci_iomap(pdev, 2, 0x10000);
- if (priv->regs == NULL) {
- wiphy_err(hw->wiphy, "Cannot map device registers\n");
- goto err_iounmap;
- }
- }
-
/* Reset firmware and hardware */
mwl8k_hw_reset(priv);
@@ -4017,19 +3954,26 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
rc = mwl8k_request_firmware(priv);
if (rc) {
wiphy_err(hw->wiphy, "Firmware files not found\n");
- goto err_stop_firmware;
+ return rc;
}
/* Load firmware into hardware */
rc = mwl8k_load_firmware(hw);
- if (rc) {
+ if (rc)
wiphy_err(hw->wiphy, "Cannot start firmware\n");
- goto err_stop_firmware;
- }
/* Reclaim memory once firmware is successfully loaded */
mwl8k_release_firmware(priv);
+ return rc;
+}
+
+/* initialize hw after successfully loading a firmware image */
+static int mwl8k_probe_hw(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int rc = 0;
+ int i;
if (priv->ap_fw) {
priv->rxd_ops = priv->device_info->ap_rxd_ops;
@@ -4046,58 +3990,11 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
priv->wmm_enabled = false;
priv->pending_tx_pkts = 0;
-
- /*
- * Extra headroom is the size of the required DMA header
- * minus the size of the smallest 802.11 frame (CTS frame).
- */
- hw->extra_tx_headroom =
- sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
-
- hw->channel_change_time = 10;
-
- hw->queues = MWL8K_TX_QUEUES;
-
- /* Set rssi values to dBm */
- hw->flags |= IEEE80211_HW_SIGNAL_DBM;
- hw->vif_data_size = sizeof(struct mwl8k_vif);
- hw->sta_data_size = sizeof(struct mwl8k_sta);
-
- priv->macids_used = 0;
- INIT_LIST_HEAD(&priv->vif_list);
-
- /* Set default radio state and preamble */
- priv->radio_on = 0;
- priv->radio_short_preamble = 0;
-
- /* Finalize join worker */
- INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
-
- /* TX reclaim and RX tasklets. */
- tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
- tasklet_disable(&priv->poll_tx_task);
- tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
- tasklet_disable(&priv->poll_rx_task);
-
- /* Power management cookie */
- priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
- if (priv->cookie == NULL)
- goto err_stop_firmware;
-
rc = mwl8k_rxq_init(hw, 0);
if (rc)
- goto err_free_cookie;
+ goto err_stop_firmware;
rxq_refill(hw, 0, INT_MAX);
- mutex_init(&priv->fw_mutex);
- priv->fw_mutex_owner = NULL;
- priv->fw_mutex_depth = 0;
- priv->hostcmd_wait = NULL;
-
- spin_lock_init(&priv->tx_lock);
-
- priv->tx_wait = NULL;
-
for (i = 0; i < MWL8K_TX_QUEUES; i++) {
rc = mwl8k_txq_init(hw, i);
if (rc)
@@ -4137,13 +4034,6 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
goto err_free_irq;
}
- hw->wiphy->interface_modes = 0;
- if (priv->ap_macids_supported)
- hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
- if (priv->sta_macids_supported)
- hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
-
-
/* Turn radio off */
rc = mwl8k_cmd_radio_disable(hw);
if (rc) {
@@ -4162,12 +4052,6 @@ static int __devinit mwl8k_probe(struct pci_dev *pdev,
iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
free_irq(priv->pdev->irq, hw);
- rc = ieee80211_register_hw(hw);
- if (rc) {
- wiphy_err(hw->wiphy, "Cannot register device\n");
- goto err_free_queues;
- }
-
wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
priv->device_info->part_name,
priv->hw_rev, hw->wiphy->perm_addr,
@@ -4186,14 +4070,213 @@ err_free_queues:
mwl8k_txq_deinit(hw, i);
mwl8k_rxq_deinit(hw, 0);
+err_stop_firmware:
+ mwl8k_hw_reset(priv);
+
+ return rc;
+}
+
+/*
+ * invoke mwl8k_reload_firmware to change the firmware image after the device
+ * has already been registered
+ */
+static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
+{
+ int i, rc = 0;
+ struct mwl8k_priv *priv = hw->priv;
+
+ mwl8k_stop(hw);
+ mwl8k_rxq_deinit(hw, 0);
+
+ for (i = 0; i < MWL8K_TX_QUEUES; i++)
+ mwl8k_txq_deinit(hw, i);
+
+ rc = mwl8k_init_firmware(hw, fw_image);
+ if (rc)
+ goto fail;
+
+ rc = mwl8k_probe_hw(hw);
+ if (rc)
+ goto fail;
+
+ rc = mwl8k_start(hw);
+ if (rc)
+ goto fail;
+
+ rc = mwl8k_config(hw, ~0);
+ if (rc)
+ goto fail;
+
+ for (i = 0; i < MWL8K_TX_QUEUES; i++) {
+ rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
+ if (rc)
+ goto fail;
+ }
+
+ return rc;
+
+fail:
+ printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
+ return rc;
+}
+
+static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
+{
+ struct ieee80211_hw *hw = priv->hw;
+ int i, rc;
+
+ /*
+ * Extra headroom is the size of the required DMA header
+ * minus the size of the smallest 802.11 frame (CTS frame).
+ */
+ hw->extra_tx_headroom =
+ sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
+
+ hw->channel_change_time = 10;
+
+ hw->queues = MWL8K_TX_QUEUES;
+
+ /* Set rssi values to dBm */
+ hw->flags |= IEEE80211_HW_SIGNAL_DBM;
+ hw->vif_data_size = sizeof(struct mwl8k_vif);
+ hw->sta_data_size = sizeof(struct mwl8k_sta);
+
+ priv->macids_used = 0;
+ INIT_LIST_HEAD(&priv->vif_list);
+
+ /* Set default radio state and preamble */
+ priv->radio_on = 0;
+ priv->radio_short_preamble = 0;
+
+ /* Finalize join worker */
+ INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
+
+ /* TX reclaim and RX tasklets. */
+ tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
+ tasklet_disable(&priv->poll_tx_task);
+ tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
+ tasklet_disable(&priv->poll_rx_task);
+
+ /* Power management cookie */
+ priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
+ if (priv->cookie == NULL)
+ return -ENOMEM;
+
+ mutex_init(&priv->fw_mutex);
+ priv->fw_mutex_owner = NULL;
+ priv->fw_mutex_depth = 0;
+ priv->hostcmd_wait = NULL;
+
+ spin_lock_init(&priv->tx_lock);
+
+ priv->tx_wait = NULL;
+
+ rc = mwl8k_probe_hw(hw);
+ if (rc)
+ goto err_free_cookie;
+
+ hw->wiphy->interface_modes = 0;
+ if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
+ hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
+ if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
+ hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
+
+ rc = ieee80211_register_hw(hw);
+ if (rc) {
+ wiphy_err(hw->wiphy, "Cannot register device\n");
+ goto err_unprobe_hw;
+ }
+
+ return 0;
+
+err_unprobe_hw:
+ for (i = 0; i < MWL8K_TX_QUEUES; i++)
+ mwl8k_txq_deinit(hw, i);
+ mwl8k_rxq_deinit(hw, 0);
+
err_free_cookie:
if (priv->cookie != NULL)
pci_free_consistent(priv->pdev, 4,
priv->cookie, priv->cookie_dma);
+ return rc;
+}
+static int __devinit mwl8k_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ static int printed_version;
+ struct ieee80211_hw *hw;
+ struct mwl8k_priv *priv;
+ int rc;
+
+ if (!printed_version) {
+ printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
+ printed_version = 1;
+ }
+
+
+ rc = pci_enable_device(pdev);
+ if (rc) {
+ printk(KERN_ERR "%s: Cannot enable new PCI device\n",
+ MWL8K_NAME);
+ return rc;
+ }
+
+ rc = pci_request_regions(pdev, MWL8K_NAME);
+ if (rc) {
+ printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
+ MWL8K_NAME);
+ goto err_disable_device;
+ }
+
+ pci_set_master(pdev);
+
+
+ hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
+ if (hw == NULL) {
+ printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
+ rc = -ENOMEM;
+ goto err_free_reg;
+ }
+
+ SET_IEEE80211_DEV(hw, &pdev->dev);
+ pci_set_drvdata(pdev, hw);
+
+ priv = hw->priv;
+ priv->hw = hw;
+ priv->pdev = pdev;
+ priv->device_info = &mwl8k_info_tbl[id->driver_data];
+
+
+ priv->sram = pci_iomap(pdev, 0, 0x10000);
+ if (priv->sram == NULL) {
+ wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
+ goto err_iounmap;
+ }
+
+ /*
+ * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
+ * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
+ */
+ priv->regs = pci_iomap(pdev, 1, 0x10000);
+ if (priv->regs == NULL) {
+ priv->regs = pci_iomap(pdev, 2, 0x10000);
+ if (priv->regs == NULL) {
+ wiphy_err(hw->wiphy, "Cannot map device registers\n");
+ goto err_iounmap;
+ }
+ }
+
+ rc = mwl8k_init_firmware(hw);
+ if (rc)
+ goto err_stop_firmware;
+
+ rc = mwl8k_firmware_load_success(priv);
+ if (!rc)
+ return rc;
+
err_stop_firmware:
mwl8k_hw_reset(priv);
- mwl8k_release_firmware(priv);
err_iounmap:
if (priv->regs != NULL)