1949 lines
51 KiB
C
1949 lines
51 KiB
C
/*
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* Marvell Wireless LAN device driver: PCIE specific handling
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*
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* Copyright (C) 2011, Marvell International Ltd.
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*
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* This software file (the "File") is distributed by Marvell International
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* Ltd. under the terms of the GNU General Public License Version 2, June 1991
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* (the "License"). You may use, redistribute and/or modify this File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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*/
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#include <linux/firmware.h>
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#include "decl.h"
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#include "ioctl.h"
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#include "util.h"
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#include "fw.h"
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#include "main.h"
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#include "wmm.h"
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#include "11n.h"
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#include "pcie.h"
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#define PCIE_VERSION "1.0"
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#define DRV_NAME "Marvell mwifiex PCIe"
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static u8 user_rmmod;
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static struct mwifiex_if_ops pcie_ops;
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static struct semaphore add_remove_card_sem;
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static int mwifiex_pcie_enable_host_int(struct mwifiex_adapter *adapter);
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static int mwifiex_pcie_resume(struct pci_dev *pdev);
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/*
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* This function is called after skb allocation to update
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* "skb->cb" with physical address of data pointer.
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*/
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static phys_addr_t *mwifiex_update_sk_buff_pa(struct sk_buff *skb)
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{
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phys_addr_t *buf_pa = MWIFIEX_SKB_PACB(skb);
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*buf_pa = (phys_addr_t)virt_to_phys(skb->data);
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return buf_pa;
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}
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/*
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* This function reads sleep cookie and checks if FW is ready
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*/
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static bool mwifiex_pcie_ok_to_access_hw(struct mwifiex_adapter *adapter)
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{
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u32 *cookie_addr;
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struct pcie_service_card *card = adapter->card;
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if (card->sleep_cookie) {
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cookie_addr = (u32 *)card->sleep_cookie->data;
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dev_dbg(adapter->dev, "info: ACCESS_HW: sleep cookie=0x%x\n",
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*cookie_addr);
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if (*cookie_addr == FW_AWAKE_COOKIE)
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return true;
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}
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return false;
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}
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/*
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* This function probes an mwifiex device and registers it. It allocates
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* the card structure, enables PCIE function number and initiates the
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* device registration and initialization procedure by adding a logical
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* interface.
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*/
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static int mwifiex_pcie_probe(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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struct pcie_service_card *card;
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pr_debug("info: vendor=0x%4.04X device=0x%4.04X rev=%d\n",
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pdev->vendor, pdev->device, pdev->revision);
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card = kzalloc(sizeof(struct pcie_service_card), GFP_KERNEL);
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if (!card) {
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pr_err("%s: failed to alloc memory\n", __func__);
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return -ENOMEM;
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}
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card->dev = pdev;
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if (mwifiex_add_card(card, &add_remove_card_sem, &pcie_ops,
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MWIFIEX_PCIE)) {
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pr_err("%s failed\n", __func__);
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kfree(card);
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return -1;
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}
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return 0;
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}
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/*
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* This function removes the interface and frees up the card structure.
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*/
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static void mwifiex_pcie_remove(struct pci_dev *pdev)
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{
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struct pcie_service_card *card;
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struct mwifiex_adapter *adapter;
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int i;
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card = pci_get_drvdata(pdev);
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if (!card)
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return;
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adapter = card->adapter;
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if (!adapter || !adapter->priv_num)
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return;
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if (user_rmmod) {
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#ifdef CONFIG_PM
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if (adapter->is_suspended)
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mwifiex_pcie_resume(pdev);
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#endif
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for (i = 0; i < adapter->priv_num; i++)
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if ((GET_BSS_ROLE(adapter->priv[i]) ==
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MWIFIEX_BSS_ROLE_STA) &&
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adapter->priv[i]->media_connected)
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mwifiex_deauthenticate(adapter->priv[i], NULL);
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mwifiex_disable_auto_ds(mwifiex_get_priv(adapter,
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MWIFIEX_BSS_ROLE_ANY));
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mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
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MWIFIEX_BSS_ROLE_ANY),
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MWIFIEX_FUNC_SHUTDOWN);
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}
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mwifiex_remove_card(card->adapter, &add_remove_card_sem);
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kfree(card);
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}
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/*
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* Kernel needs to suspend all functions separately. Therefore all
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* registered functions must have drivers with suspend and resume
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* methods. Failing that the kernel simply removes the whole card.
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*
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* If already not suspended, this function allocates and sends a host
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* sleep activate request to the firmware and turns off the traffic.
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*/
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static int mwifiex_pcie_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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struct mwifiex_adapter *adapter;
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struct pcie_service_card *card;
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int hs_actived, i;
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if (pdev) {
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card = (struct pcie_service_card *) pci_get_drvdata(pdev);
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if (!card || card->adapter) {
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pr_err("Card or adapter structure is not valid\n");
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return 0;
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}
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} else {
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pr_err("PCIE device is not specified\n");
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return 0;
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}
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adapter = card->adapter;
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hs_actived = mwifiex_enable_hs(adapter);
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/* Indicate device suspended */
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adapter->is_suspended = true;
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for (i = 0; i < adapter->priv_num; i++)
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netif_carrier_off(adapter->priv[i]->netdev);
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return 0;
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}
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/*
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* Kernel needs to suspend all functions separately. Therefore all
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* registered functions must have drivers with suspend and resume
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* methods. Failing that the kernel simply removes the whole card.
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*
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* If already not resumed, this function turns on the traffic and
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* sends a host sleep cancel request to the firmware.
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*/
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static int mwifiex_pcie_resume(struct pci_dev *pdev)
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{
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struct mwifiex_adapter *adapter;
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struct pcie_service_card *card;
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int i;
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if (pdev) {
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card = (struct pcie_service_card *) pci_get_drvdata(pdev);
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if (!card || !card->adapter) {
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pr_err("Card or adapter structure is not valid\n");
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return 0;
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}
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} else {
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pr_err("PCIE device is not specified\n");
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return 0;
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}
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adapter = card->adapter;
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if (!adapter->is_suspended) {
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dev_warn(adapter->dev, "Device already resumed\n");
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return 0;
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}
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adapter->is_suspended = false;
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for (i = 0; i < adapter->priv_num; i++)
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if (adapter->priv[i]->media_connected)
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netif_carrier_on(adapter->priv[i]->netdev);
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mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
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MWIFIEX_ASYNC_CMD);
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return 0;
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}
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#define PCIE_VENDOR_ID_MARVELL (0x11ab)
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#define PCIE_DEVICE_ID_MARVELL_88W8766P (0x2b30)
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static DEFINE_PCI_DEVICE_TABLE(mwifiex_ids) = {
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{
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PCIE_VENDOR_ID_MARVELL, PCIE_DEVICE_ID_MARVELL_88W8766P,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0,
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},
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{},
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};
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MODULE_DEVICE_TABLE(pci, mwifiex_ids);
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/* PCI Device Driver */
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static struct pci_driver __refdata mwifiex_pcie = {
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.name = "mwifiex_pcie",
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.id_table = mwifiex_ids,
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.probe = mwifiex_pcie_probe,
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.remove = mwifiex_pcie_remove,
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#ifdef CONFIG_PM
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/* Power Management Hooks */
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.suspend = mwifiex_pcie_suspend,
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.resume = mwifiex_pcie_resume,
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#endif
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};
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/*
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* This function writes data into PCIE card register.
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*/
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static int mwifiex_write_reg(struct mwifiex_adapter *adapter, int reg, u32 data)
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{
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struct pcie_service_card *card = adapter->card;
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iowrite32(data, card->pci_mmap1 + reg);
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return 0;
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}
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/*
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* This function reads data from PCIE card register.
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*/
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static int mwifiex_read_reg(struct mwifiex_adapter *adapter, int reg, u32 *data)
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{
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struct pcie_service_card *card = adapter->card;
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*data = ioread32(card->pci_mmap1 + reg);
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return 0;
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}
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/*
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* This function wakes up the card.
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*
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* A host power up command is written to the card configuration
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* register to wake up the card.
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*/
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static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
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{
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int i = 0;
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while (mwifiex_pcie_ok_to_access_hw(adapter)) {
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i++;
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udelay(10);
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/* 50ms max wait */
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if (i == 50000)
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break;
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}
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dev_dbg(adapter->dev, "event: Wakeup device...\n");
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/* Enable interrupts or any chip access will wakeup device */
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if (mwifiex_write_reg(adapter, PCIE_HOST_INT_MASK, HOST_INTR_MASK)) {
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dev_warn(adapter->dev, "Enable host interrupt failed\n");
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return -1;
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}
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dev_dbg(adapter->dev, "PCIE wakeup: Setting PS_STATE_AWAKE\n");
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adapter->ps_state = PS_STATE_AWAKE;
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return 0;
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}
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/*
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* This function is called after the card has woken up.
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*
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* The card configuration register is reset.
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*/
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static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
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{
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dev_dbg(adapter->dev, "cmd: Wakeup device completed\n");
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return 0;
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}
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/*
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* This function disables the host interrupt.
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*
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* The host interrupt mask is read, the disable bit is reset and
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* written back to the card host interrupt mask register.
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*/
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static int mwifiex_pcie_disable_host_int(struct mwifiex_adapter *adapter)
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{
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if (mwifiex_pcie_ok_to_access_hw(adapter)) {
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if (mwifiex_write_reg(adapter, PCIE_HOST_INT_MASK,
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0x00000000)) {
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dev_warn(adapter->dev, "Disable host interrupt failed\n");
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return -1;
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}
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}
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return 0;
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}
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/*
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* This function enables the host interrupt.
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*
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* The host interrupt enable mask is written to the card
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* host interrupt mask register.
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*/
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static int mwifiex_pcie_enable_host_int(struct mwifiex_adapter *adapter)
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{
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if (mwifiex_pcie_ok_to_access_hw(adapter)) {
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/* Simply write the mask to the register */
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if (mwifiex_write_reg(adapter, PCIE_HOST_INT_MASK,
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HOST_INTR_MASK)) {
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dev_warn(adapter->dev, "Enable host interrupt failed\n");
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return -1;
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}
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}
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return 0;
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}
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/*
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* This function creates buffer descriptor ring for TX
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*/
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static int mwifiex_pcie_create_txbd_ring(struct mwifiex_adapter *adapter)
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{
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struct pcie_service_card *card = adapter->card;
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struct sk_buff *skb;
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int i;
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phys_addr_t *buf_pa;
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/*
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* driver maintaines the write pointer and firmware maintaines the read
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* pointer. The write pointer starts at 0 (zero) while the read pointer
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* starts at zero with rollover bit set
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*/
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card->txbd_wrptr = 0;
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card->txbd_rdptr |= MWIFIEX_BD_FLAG_ROLLOVER_IND;
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/* allocate shared memory for the BD ring and divide the same in to
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several descriptors */
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card->txbd_ring_size = sizeof(struct mwifiex_pcie_buf_desc) *
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MWIFIEX_MAX_TXRX_BD;
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dev_dbg(adapter->dev, "info: txbd_ring: Allocating %d bytes\n",
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card->txbd_ring_size);
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card->txbd_ring_vbase = kzalloc(card->txbd_ring_size, GFP_KERNEL);
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if (!card->txbd_ring_vbase) {
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dev_err(adapter->dev, "Unable to allocate buffer for txbd ring.\n");
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kfree(card->txbd_ring_vbase);
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return -1;
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}
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card->txbd_ring_pbase = virt_to_phys(card->txbd_ring_vbase);
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dev_dbg(adapter->dev, "info: txbd_ring - base: %p, pbase: %#x:%x,"
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"len: %x\n", card->txbd_ring_vbase,
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(u32)card->txbd_ring_pbase,
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(u32)((u64)card->txbd_ring_pbase >> 32),
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card->txbd_ring_size);
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for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) {
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card->txbd_ring[i] = (struct mwifiex_pcie_buf_desc *)
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(card->txbd_ring_vbase +
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(sizeof(struct mwifiex_pcie_buf_desc) * i));
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/* Allocate buffer here so that firmware can DMA data from it */
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skb = dev_alloc_skb(MWIFIEX_RX_DATA_BUF_SIZE);
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if (!skb) {
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dev_err(adapter->dev, "Unable to allocate skb for TX ring.\n");
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kfree(card->txbd_ring_vbase);
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return -ENOMEM;
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}
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buf_pa = mwifiex_update_sk_buff_pa(skb);
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skb_put(skb, MWIFIEX_RX_DATA_BUF_SIZE);
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dev_dbg(adapter->dev, "info: TX ring: add new skb base: %p, "
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"buf_base: %p, buf_pbase: %#x:%x, "
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"buf_len: %#x\n", skb, skb->data,
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(u32)*buf_pa, (u32)(((u64)*buf_pa >> 32)),
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skb->len);
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card->tx_buf_list[i] = skb;
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card->txbd_ring[i]->paddr = *buf_pa;
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card->txbd_ring[i]->len = (u16)skb->len;
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card->txbd_ring[i]->flags = 0;
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}
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return 0;
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}
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static int mwifiex_pcie_delete_txbd_ring(struct mwifiex_adapter *adapter)
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{
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struct pcie_service_card *card = adapter->card;
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int i;
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for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) {
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if (card->tx_buf_list[i])
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dev_kfree_skb_any(card->tx_buf_list[i]);
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card->tx_buf_list[i] = NULL;
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card->txbd_ring[i]->paddr = 0;
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card->txbd_ring[i]->len = 0;
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card->txbd_ring[i]->flags = 0;
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card->txbd_ring[i] = NULL;
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}
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kfree(card->txbd_ring_vbase);
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card->txbd_ring_size = 0;
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card->txbd_wrptr = 0;
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card->txbd_rdptr = 0 | MWIFIEX_BD_FLAG_ROLLOVER_IND;
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card->txbd_ring_vbase = NULL;
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return 0;
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}
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/*
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* This function creates buffer descriptor ring for RX
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*/
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static int mwifiex_pcie_create_rxbd_ring(struct mwifiex_adapter *adapter)
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{
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struct pcie_service_card *card = adapter->card;
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struct sk_buff *skb;
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int i;
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phys_addr_t *buf_pa;
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/*
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* driver maintaines the read pointer and firmware maintaines the write
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* pointer. The write pointer starts at 0 (zero) while the read pointer
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* starts at zero with rollover bit set
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*/
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card->rxbd_wrptr = 0;
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card->rxbd_rdptr |= MWIFIEX_BD_FLAG_ROLLOVER_IND;
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card->rxbd_ring_size = sizeof(struct mwifiex_pcie_buf_desc) *
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MWIFIEX_MAX_TXRX_BD;
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dev_dbg(adapter->dev, "info: rxbd_ring: Allocating %d bytes\n",
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card->rxbd_ring_size);
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card->rxbd_ring_vbase = kzalloc(card->rxbd_ring_size, GFP_KERNEL);
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if (!card->rxbd_ring_vbase) {
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dev_err(adapter->dev, "Unable to allocate buffer for "
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"rxbd_ring.\n");
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return -1;
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}
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card->rxbd_ring_pbase = virt_to_phys(card->rxbd_ring_vbase);
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dev_dbg(adapter->dev, "info: rxbd_ring - base: %p, pbase: %#x:%x,"
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"len: %#x\n", card->rxbd_ring_vbase,
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(u32)card->rxbd_ring_pbase,
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(u32)((u64)card->rxbd_ring_pbase >> 32),
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card->rxbd_ring_size);
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for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) {
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card->rxbd_ring[i] = (struct mwifiex_pcie_buf_desc *)
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(card->rxbd_ring_vbase +
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(sizeof(struct mwifiex_pcie_buf_desc) * i));
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/* Allocate skb here so that firmware can DMA data from it */
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skb = dev_alloc_skb(MWIFIEX_RX_DATA_BUF_SIZE);
|
|
if (!skb) {
|
|
dev_err(adapter->dev, "Unable to allocate skb for RX ring.\n");
|
|
kfree(card->rxbd_ring_vbase);
|
|
return -ENOMEM;
|
|
}
|
|
buf_pa = mwifiex_update_sk_buff_pa(skb);
|
|
skb_put(skb, MWIFIEX_RX_DATA_BUF_SIZE);
|
|
|
|
dev_dbg(adapter->dev, "info: RX ring: add new skb base: %p, "
|
|
"buf_base: %p, buf_pbase: %#x:%x, "
|
|
"buf_len: %#x\n", skb, skb->data,
|
|
(u32)*buf_pa, (u32)((u64)*buf_pa >> 32),
|
|
skb->len);
|
|
|
|
card->rx_buf_list[i] = skb;
|
|
card->rxbd_ring[i]->paddr = *buf_pa;
|
|
card->rxbd_ring[i]->len = (u16)skb->len;
|
|
card->rxbd_ring[i]->flags = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function deletes Buffer descriptor ring for RX
|
|
*/
|
|
static int mwifiex_pcie_delete_rxbd_ring(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
int i;
|
|
|
|
for (i = 0; i < MWIFIEX_MAX_TXRX_BD; i++) {
|
|
if (card->rx_buf_list[i])
|
|
dev_kfree_skb_any(card->rx_buf_list[i]);
|
|
card->rx_buf_list[i] = NULL;
|
|
card->rxbd_ring[i]->paddr = 0;
|
|
card->rxbd_ring[i]->len = 0;
|
|
card->rxbd_ring[i]->flags = 0;
|
|
card->rxbd_ring[i] = NULL;
|
|
}
|
|
|
|
kfree(card->rxbd_ring_vbase);
|
|
card->rxbd_ring_size = 0;
|
|
card->rxbd_wrptr = 0;
|
|
card->rxbd_rdptr = 0 | MWIFIEX_BD_FLAG_ROLLOVER_IND;
|
|
card->rxbd_ring_vbase = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function creates buffer descriptor ring for Events
|
|
*/
|
|
static int mwifiex_pcie_create_evtbd_ring(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
struct sk_buff *skb;
|
|
int i;
|
|
phys_addr_t *buf_pa;
|
|
|
|
/*
|
|
* driver maintaines the read pointer and firmware maintaines the write
|
|
* pointer. The write pointer starts at 0 (zero) while the read pointer
|
|
* starts at zero with rollover bit set
|
|
*/
|
|
card->evtbd_wrptr = 0;
|
|
card->evtbd_rdptr |= MWIFIEX_BD_FLAG_ROLLOVER_IND;
|
|
|
|
card->evtbd_ring_size = sizeof(struct mwifiex_pcie_buf_desc) *
|
|
MWIFIEX_MAX_EVT_BD;
|
|
dev_dbg(adapter->dev, "info: evtbd_ring: Allocating %d bytes\n",
|
|
card->evtbd_ring_size);
|
|
card->evtbd_ring_vbase = kzalloc(card->evtbd_ring_size, GFP_KERNEL);
|
|
if (!card->evtbd_ring_vbase) {
|
|
dev_err(adapter->dev, "Unable to allocate buffer. "
|
|
"Terminating download\n");
|
|
return -1;
|
|
}
|
|
card->evtbd_ring_pbase = virt_to_phys(card->evtbd_ring_vbase);
|
|
|
|
dev_dbg(adapter->dev, "info: CMDRSP/EVT bd_ring - base: %p, "
|
|
"pbase: %#x:%x, len: %#x\n", card->evtbd_ring_vbase,
|
|
(u32)card->evtbd_ring_pbase,
|
|
(u32)((u64)card->evtbd_ring_pbase >> 32),
|
|
card->evtbd_ring_size);
|
|
|
|
for (i = 0; i < MWIFIEX_MAX_EVT_BD; i++) {
|
|
card->evtbd_ring[i] = (struct mwifiex_pcie_buf_desc *)
|
|
(card->evtbd_ring_vbase +
|
|
(sizeof(struct mwifiex_pcie_buf_desc) * i));
|
|
|
|
/* Allocate skb here so that firmware can DMA data from it */
|
|
skb = dev_alloc_skb(MAX_EVENT_SIZE);
|
|
if (!skb) {
|
|
dev_err(adapter->dev, "Unable to allocate skb for EVENT buf.\n");
|
|
kfree(card->evtbd_ring_vbase);
|
|
return -ENOMEM;
|
|
}
|
|
buf_pa = mwifiex_update_sk_buff_pa(skb);
|
|
skb_put(skb, MAX_EVENT_SIZE);
|
|
|
|
dev_dbg(adapter->dev, "info: Evt ring: add new skb. base: %p, "
|
|
"buf_base: %p, buf_pbase: %#x:%x, "
|
|
"buf_len: %#x\n", skb, skb->data,
|
|
(u32)*buf_pa, (u32)((u64)*buf_pa >> 32),
|
|
skb->len);
|
|
|
|
card->evt_buf_list[i] = skb;
|
|
card->evtbd_ring[i]->paddr = *buf_pa;
|
|
card->evtbd_ring[i]->len = (u16)skb->len;
|
|
card->evtbd_ring[i]->flags = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function deletes Buffer descriptor ring for Events
|
|
*/
|
|
static int mwifiex_pcie_delete_evtbd_ring(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
int i;
|
|
|
|
for (i = 0; i < MWIFIEX_MAX_EVT_BD; i++) {
|
|
if (card->evt_buf_list[i])
|
|
dev_kfree_skb_any(card->evt_buf_list[i]);
|
|
card->evt_buf_list[i] = NULL;
|
|
card->evtbd_ring[i]->paddr = 0;
|
|
card->evtbd_ring[i]->len = 0;
|
|
card->evtbd_ring[i]->flags = 0;
|
|
card->evtbd_ring[i] = NULL;
|
|
}
|
|
|
|
kfree(card->evtbd_ring_vbase);
|
|
card->evtbd_wrptr = 0;
|
|
card->evtbd_rdptr = 0 | MWIFIEX_BD_FLAG_ROLLOVER_IND;
|
|
card->evtbd_ring_size = 0;
|
|
card->evtbd_ring_vbase = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function allocates a buffer for CMDRSP
|
|
*/
|
|
static int mwifiex_pcie_alloc_cmdrsp_buf(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
struct sk_buff *skb;
|
|
|
|
/* Allocate memory for receiving command response data */
|
|
skb = dev_alloc_skb(MWIFIEX_UPLD_SIZE);
|
|
if (!skb) {
|
|
dev_err(adapter->dev, "Unable to allocate skb for command "
|
|
"response data.\n");
|
|
return -ENOMEM;
|
|
}
|
|
mwifiex_update_sk_buff_pa(skb);
|
|
skb_put(skb, MWIFIEX_UPLD_SIZE);
|
|
card->cmdrsp_buf = skb;
|
|
|
|
skb = NULL;
|
|
/* Allocate memory for sending command to firmware */
|
|
skb = dev_alloc_skb(MWIFIEX_SIZE_OF_CMD_BUFFER);
|
|
if (!skb) {
|
|
dev_err(adapter->dev, "Unable to allocate skb for command "
|
|
"data.\n");
|
|
return -ENOMEM;
|
|
}
|
|
mwifiex_update_sk_buff_pa(skb);
|
|
skb_put(skb, MWIFIEX_SIZE_OF_CMD_BUFFER);
|
|
card->cmd_buf = skb;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function deletes a buffer for CMDRSP
|
|
*/
|
|
static int mwifiex_pcie_delete_cmdrsp_buf(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card;
|
|
|
|
if (!adapter)
|
|
return 0;
|
|
|
|
card = adapter->card;
|
|
|
|
if (card && card->cmdrsp_buf)
|
|
dev_kfree_skb_any(card->cmdrsp_buf);
|
|
|
|
if (card && card->cmd_buf)
|
|
dev_kfree_skb_any(card->cmd_buf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function allocates a buffer for sleep cookie
|
|
*/
|
|
static int mwifiex_pcie_alloc_sleep_cookie_buf(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct pcie_service_card *card = adapter->card;
|
|
|
|
/* Allocate memory for sleep cookie */
|
|
skb = dev_alloc_skb(sizeof(u32));
|
|
if (!skb) {
|
|
dev_err(adapter->dev, "Unable to allocate skb for sleep "
|
|
"cookie!\n");
|
|
return -ENOMEM;
|
|
}
|
|
mwifiex_update_sk_buff_pa(skb);
|
|
skb_put(skb, sizeof(u32));
|
|
|
|
/* Init val of Sleep Cookie */
|
|
*(u32 *)skb->data = FW_AWAKE_COOKIE;
|
|
|
|
dev_dbg(adapter->dev, "alloc_scook: sleep cookie=0x%x\n",
|
|
*((u32 *)skb->data));
|
|
|
|
/* Save the sleep cookie */
|
|
card->sleep_cookie = skb;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function deletes buffer for sleep cookie
|
|
*/
|
|
static int mwifiex_pcie_delete_sleep_cookie_buf(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card;
|
|
|
|
if (!adapter)
|
|
return 0;
|
|
|
|
card = adapter->card;
|
|
|
|
if (card && card->sleep_cookie) {
|
|
dev_kfree_skb_any(card->sleep_cookie);
|
|
card->sleep_cookie = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function sends data buffer to device
|
|
*/
|
|
static int
|
|
mwifiex_pcie_send_data(struct mwifiex_adapter *adapter, struct sk_buff *skb)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
u32 wrindx, rdptr;
|
|
phys_addr_t *buf_pa;
|
|
__le16 *tmp;
|
|
|
|
if (!mwifiex_pcie_ok_to_access_hw(adapter))
|
|
mwifiex_pm_wakeup_card(adapter);
|
|
|
|
/* Read the TX ring read pointer set by firmware */
|
|
if (mwifiex_read_reg(adapter, REG_TXBD_RDPTR, &rdptr)) {
|
|
dev_err(adapter->dev, "SEND DATA: failed to read "
|
|
"REG_TXBD_RDPTR\n");
|
|
return -1;
|
|
}
|
|
|
|
wrindx = card->txbd_wrptr & MWIFIEX_TXBD_MASK;
|
|
|
|
dev_dbg(adapter->dev, "info: SEND DATA: <Rd: %#x, Wr: %#x>\n", rdptr,
|
|
card->txbd_wrptr);
|
|
if (((card->txbd_wrptr & MWIFIEX_TXBD_MASK) !=
|
|
(rdptr & MWIFIEX_TXBD_MASK)) ||
|
|
((card->txbd_wrptr & MWIFIEX_BD_FLAG_ROLLOVER_IND) !=
|
|
(rdptr & MWIFIEX_BD_FLAG_ROLLOVER_IND))) {
|
|
struct sk_buff *skb_data;
|
|
u8 *payload;
|
|
|
|
adapter->data_sent = true;
|
|
skb_data = card->tx_buf_list[wrindx];
|
|
memcpy(skb_data->data, skb->data, skb->len);
|
|
payload = skb_data->data;
|
|
tmp = (__le16 *)&payload[0];
|
|
*tmp = cpu_to_le16((u16)skb->len);
|
|
tmp = (__le16 *)&payload[2];
|
|
*tmp = cpu_to_le16(MWIFIEX_TYPE_DATA);
|
|
skb_put(skb_data, MWIFIEX_RX_DATA_BUF_SIZE - skb_data->len);
|
|
skb_trim(skb_data, skb->len);
|
|
buf_pa = MWIFIEX_SKB_PACB(skb_data);
|
|
card->txbd_ring[wrindx]->paddr = *buf_pa;
|
|
card->txbd_ring[wrindx]->len = (u16)skb_data->len;
|
|
card->txbd_ring[wrindx]->flags = MWIFIEX_BD_FLAG_FIRST_DESC |
|
|
MWIFIEX_BD_FLAG_LAST_DESC;
|
|
|
|
if ((++card->txbd_wrptr & MWIFIEX_TXBD_MASK) ==
|
|
MWIFIEX_MAX_TXRX_BD)
|
|
card->txbd_wrptr = ((card->txbd_wrptr &
|
|
MWIFIEX_BD_FLAG_ROLLOVER_IND) ^
|
|
MWIFIEX_BD_FLAG_ROLLOVER_IND);
|
|
|
|
/* Write the TX ring write pointer in to REG_TXBD_WRPTR */
|
|
if (mwifiex_write_reg(adapter, REG_TXBD_WRPTR,
|
|
card->txbd_wrptr)) {
|
|
dev_err(adapter->dev, "SEND DATA: failed to write "
|
|
"REG_TXBD_WRPTR\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Send the TX ready interrupt */
|
|
if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
|
|
CPU_INTR_DNLD_RDY)) {
|
|
dev_err(adapter->dev, "SEND DATA: failed to assert "
|
|
"door-bell interrupt.\n");
|
|
return -1;
|
|
}
|
|
dev_dbg(adapter->dev, "info: SEND DATA: Updated <Rd: %#x, Wr: "
|
|
"%#x> and sent packet to firmware "
|
|
"successfully\n", rdptr,
|
|
card->txbd_wrptr);
|
|
} else {
|
|
dev_dbg(adapter->dev, "info: TX Ring full, can't send anymore "
|
|
"packets to firmware\n");
|
|
adapter->data_sent = true;
|
|
/* Send the TX ready interrupt */
|
|
if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
|
|
CPU_INTR_DNLD_RDY))
|
|
dev_err(adapter->dev, "SEND DATA: failed to assert "
|
|
"door-bell interrupt\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function handles received buffer ring and
|
|
* dispatches packets to upper
|
|
*/
|
|
static int mwifiex_pcie_process_recv_data(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
u32 wrptr, rd_index;
|
|
int ret = 0;
|
|
struct sk_buff *skb_tmp = NULL;
|
|
|
|
/* Read the RX ring Write pointer set by firmware */
|
|
if (mwifiex_read_reg(adapter, REG_RXBD_WRPTR, &wrptr)) {
|
|
dev_err(adapter->dev, "RECV DATA: failed to read "
|
|
"REG_TXBD_RDPTR\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
while (((wrptr & MWIFIEX_RXBD_MASK) !=
|
|
(card->rxbd_rdptr & MWIFIEX_RXBD_MASK)) ||
|
|
((wrptr & MWIFIEX_BD_FLAG_ROLLOVER_IND) ==
|
|
(card->rxbd_rdptr & MWIFIEX_BD_FLAG_ROLLOVER_IND))) {
|
|
struct sk_buff *skb_data;
|
|
u16 rx_len;
|
|
|
|
rd_index = card->rxbd_rdptr & MWIFIEX_RXBD_MASK;
|
|
skb_data = card->rx_buf_list[rd_index];
|
|
|
|
/* Get data length from interface header -
|
|
first byte is len, second byte is type */
|
|
rx_len = *((u16 *)skb_data->data);
|
|
dev_dbg(adapter->dev, "info: RECV DATA: Rd=%#x, Wr=%#x, "
|
|
"Len=%d\n", card->rxbd_rdptr, wrptr, rx_len);
|
|
skb_tmp = dev_alloc_skb(rx_len);
|
|
if (!skb_tmp) {
|
|
dev_dbg(adapter->dev, "info: Failed to alloc skb "
|
|
"for RX\n");
|
|
ret = -EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
skb_put(skb_tmp, rx_len);
|
|
|
|
memcpy(skb_tmp->data, skb_data->data + INTF_HEADER_LEN, rx_len);
|
|
if ((++card->rxbd_rdptr & MWIFIEX_RXBD_MASK) ==
|
|
MWIFIEX_MAX_TXRX_BD) {
|
|
card->rxbd_rdptr = ((card->rxbd_rdptr &
|
|
MWIFIEX_BD_FLAG_ROLLOVER_IND) ^
|
|
MWIFIEX_BD_FLAG_ROLLOVER_IND);
|
|
}
|
|
dev_dbg(adapter->dev, "info: RECV DATA: <Rd: %#x, Wr: %#x>\n",
|
|
card->rxbd_rdptr, wrptr);
|
|
|
|
/* Write the RX ring read pointer in to REG_RXBD_RDPTR */
|
|
if (mwifiex_write_reg(adapter, REG_RXBD_RDPTR,
|
|
card->rxbd_rdptr)) {
|
|
dev_err(adapter->dev, "RECV DATA: failed to "
|
|
"write REG_RXBD_RDPTR\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
/* Read the RX ring Write pointer set by firmware */
|
|
if (mwifiex_read_reg(adapter, REG_RXBD_WRPTR, &wrptr)) {
|
|
dev_err(adapter->dev, "RECV DATA: failed to read "
|
|
"REG_TXBD_RDPTR\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
dev_dbg(adapter->dev, "info: RECV DATA: Received packet from "
|
|
"firmware successfully\n");
|
|
mwifiex_handle_rx_packet(adapter, skb_tmp);
|
|
}
|
|
|
|
done:
|
|
if (ret && skb_tmp)
|
|
dev_kfree_skb_any(skb_tmp);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function downloads the boot command to device
|
|
*/
|
|
static int
|
|
mwifiex_pcie_send_boot_cmd(struct mwifiex_adapter *adapter, struct sk_buff *skb)
|
|
{
|
|
phys_addr_t *buf_pa = MWIFIEX_SKB_PACB(skb);
|
|
|
|
if (!(skb->data && skb->len && *buf_pa)) {
|
|
dev_err(adapter->dev, "Invalid parameter in %s <%p, %#x:%x, "
|
|
"%x>\n", __func__, skb->data, skb->len,
|
|
(u32)*buf_pa, (u32)((u64)*buf_pa >> 32));
|
|
return -1;
|
|
}
|
|
|
|
/* Write the lower 32bits of the physical address to scratch
|
|
* register 0 */
|
|
if (mwifiex_write_reg(adapter, PCIE_SCRATCH_0_REG, (u32)*buf_pa)) {
|
|
dev_err(adapter->dev, "%s: failed to write download command "
|
|
"to boot code.\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
/* Write the upper 32bits of the physical address to scratch
|
|
* register 1 */
|
|
if (mwifiex_write_reg(adapter, PCIE_SCRATCH_1_REG,
|
|
(u32)((u64)*buf_pa >> 32))) {
|
|
dev_err(adapter->dev, "%s: failed to write download command "
|
|
"to boot code.\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
/* Write the command length to scratch register 2 */
|
|
if (mwifiex_write_reg(adapter, PCIE_SCRATCH_2_REG, skb->len)) {
|
|
dev_err(adapter->dev, "%s: failed to write command length to "
|
|
"scratch register 2\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
/* Ring the door bell */
|
|
if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
|
|
CPU_INTR_DOOR_BELL)) {
|
|
dev_err(adapter->dev, "%s: failed to assert door-bell "
|
|
"interrupt.\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function downloads commands to the device
|
|
*/
|
|
static int
|
|
mwifiex_pcie_send_cmd(struct mwifiex_adapter *adapter, struct sk_buff *skb)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
int ret = 0;
|
|
phys_addr_t *cmd_buf_pa;
|
|
phys_addr_t *cmdrsp_buf_pa;
|
|
|
|
if (!(skb->data && skb->len)) {
|
|
dev_err(adapter->dev, "Invalid parameter in %s <%p, %#x>\n",
|
|
__func__, skb->data, skb->len);
|
|
return -1;
|
|
}
|
|
|
|
/* Make sure a command response buffer is available */
|
|
if (!card->cmdrsp_buf) {
|
|
dev_err(adapter->dev, "No response buffer available, send "
|
|
"command failed\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Make sure a command buffer is available */
|
|
if (!card->cmd_buf) {
|
|
dev_err(adapter->dev, "Command buffer not available\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
adapter->cmd_sent = true;
|
|
/* Copy the given skb in to DMA accessable shared buffer */
|
|
skb_put(card->cmd_buf, MWIFIEX_SIZE_OF_CMD_BUFFER - card->cmd_buf->len);
|
|
skb_trim(card->cmd_buf, skb->len);
|
|
memcpy(card->cmd_buf->data, skb->data, skb->len);
|
|
|
|
/* To send a command, the driver will:
|
|
1. Write the 64bit physical address of the data buffer to
|
|
SCRATCH1 + SCRATCH0
|
|
2. Ring the door bell (i.e. set the door bell interrupt)
|
|
|
|
In response to door bell interrupt, the firmware will perform
|
|
the DMA of the command packet (first header to obtain the total
|
|
length and then rest of the command).
|
|
*/
|
|
|
|
if (card->cmdrsp_buf) {
|
|
cmdrsp_buf_pa = MWIFIEX_SKB_PACB(card->cmdrsp_buf);
|
|
/* Write the lower 32bits of the cmdrsp buffer physical
|
|
address */
|
|
if (mwifiex_write_reg(adapter, REG_CMDRSP_ADDR_LO,
|
|
(u32)*cmdrsp_buf_pa)) {
|
|
dev_err(adapter->dev, "Failed to write download command to boot code.\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
/* Write the upper 32bits of the cmdrsp buffer physical
|
|
address */
|
|
if (mwifiex_write_reg(adapter, REG_CMDRSP_ADDR_HI,
|
|
(u32)((u64)*cmdrsp_buf_pa >> 32))) {
|
|
dev_err(adapter->dev, "Failed to write download command"
|
|
" to boot code.\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
cmd_buf_pa = MWIFIEX_SKB_PACB(card->cmd_buf);
|
|
/* Write the lower 32bits of the physical address to REG_CMD_ADDR_LO */
|
|
if (mwifiex_write_reg(adapter, REG_CMD_ADDR_LO,
|
|
(u32)*cmd_buf_pa)) {
|
|
dev_err(adapter->dev, "Failed to write download command "
|
|
"to boot code.\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
/* Write the upper 32bits of the physical address to REG_CMD_ADDR_HI */
|
|
if (mwifiex_write_reg(adapter, REG_CMD_ADDR_HI,
|
|
(u32)((u64)*cmd_buf_pa >> 32))) {
|
|
dev_err(adapter->dev, "Failed to write download command "
|
|
"to boot code.\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
/* Write the command length to REG_CMD_SIZE */
|
|
if (mwifiex_write_reg(adapter, REG_CMD_SIZE,
|
|
card->cmd_buf->len)) {
|
|
dev_err(adapter->dev, "Failed to write command length to "
|
|
"REG_CMD_SIZE\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
/* Ring the door bell */
|
|
if (mwifiex_write_reg(adapter, PCIE_CPU_INT_EVENT,
|
|
CPU_INTR_DOOR_BELL)) {
|
|
dev_err(adapter->dev, "Failed to assert door-bell "
|
|
"interrupt.\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
if (ret)
|
|
adapter->cmd_sent = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function handles command complete interrupt
|
|
*/
|
|
static int mwifiex_pcie_process_cmd_complete(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
int count = 0;
|
|
|
|
dev_dbg(adapter->dev, "info: Rx CMD Response\n");
|
|
|
|
if (!adapter->curr_cmd) {
|
|
skb_pull(card->cmdrsp_buf, INTF_HEADER_LEN);
|
|
if (adapter->ps_state == PS_STATE_SLEEP_CFM) {
|
|
mwifiex_process_sleep_confirm_resp(adapter,
|
|
card->cmdrsp_buf->data,
|
|
card->cmdrsp_buf->len);
|
|
while (mwifiex_pcie_ok_to_access_hw(adapter) &&
|
|
(count++ < 10))
|
|
udelay(50);
|
|
} else {
|
|
dev_err(adapter->dev, "There is no command but "
|
|
"got cmdrsp\n");
|
|
}
|
|
memcpy(adapter->upld_buf, card->cmdrsp_buf->data,
|
|
min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
|
|
card->cmdrsp_buf->len));
|
|
skb_push(card->cmdrsp_buf, INTF_HEADER_LEN);
|
|
} else if (mwifiex_pcie_ok_to_access_hw(adapter)) {
|
|
skb_pull(card->cmdrsp_buf, INTF_HEADER_LEN);
|
|
adapter->curr_cmd->resp_skb = card->cmdrsp_buf;
|
|
adapter->cmd_resp_received = true;
|
|
/* Take the pointer and set it to CMD node and will
|
|
return in the response complete callback */
|
|
card->cmdrsp_buf = NULL;
|
|
|
|
/* Clear the cmd-rsp buffer address in scratch registers. This
|
|
will prevent firmware from writing to the same response
|
|
buffer again. */
|
|
if (mwifiex_write_reg(adapter, REG_CMDRSP_ADDR_LO, 0)) {
|
|
dev_err(adapter->dev, "cmd_done: failed to clear "
|
|
"cmd_rsp address.\n");
|
|
return -1;
|
|
}
|
|
/* Write the upper 32bits of the cmdrsp buffer physical
|
|
address */
|
|
if (mwifiex_write_reg(adapter, REG_CMDRSP_ADDR_HI, 0)) {
|
|
dev_err(adapter->dev, "cmd_done: failed to clear "
|
|
"cmd_rsp address.\n");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Command Response processing complete handler
|
|
*/
|
|
static int mwifiex_pcie_cmdrsp_complete(struct mwifiex_adapter *adapter,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
|
|
if (skb) {
|
|
card->cmdrsp_buf = skb;
|
|
skb_push(card->cmdrsp_buf, INTF_HEADER_LEN);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function handles firmware event ready interrupt
|
|
*/
|
|
static int mwifiex_pcie_process_event_ready(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
u32 rdptr = card->evtbd_rdptr & MWIFIEX_EVTBD_MASK;
|
|
u32 wrptr, event;
|
|
|
|
if (adapter->event_received) {
|
|
dev_dbg(adapter->dev, "info: Event being processed, "\
|
|
"do not process this interrupt just yet\n");
|
|
return 0;
|
|
}
|
|
|
|
if (rdptr >= MWIFIEX_MAX_EVT_BD) {
|
|
dev_dbg(adapter->dev, "info: Invalid read pointer...\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Read the event ring write pointer set by firmware */
|
|
if (mwifiex_read_reg(adapter, REG_EVTBD_WRPTR, &wrptr)) {
|
|
dev_err(adapter->dev, "EventReady: failed to read REG_EVTBD_WRPTR\n");
|
|
return -1;
|
|
}
|
|
|
|
dev_dbg(adapter->dev, "info: EventReady: Initial <Rd: 0x%x, Wr: 0x%x>",
|
|
card->evtbd_rdptr, wrptr);
|
|
if (((wrptr & MWIFIEX_EVTBD_MASK) !=
|
|
(card->evtbd_rdptr & MWIFIEX_EVTBD_MASK)) ||
|
|
((wrptr & MWIFIEX_BD_FLAG_ROLLOVER_IND) ==
|
|
(card->evtbd_rdptr & MWIFIEX_BD_FLAG_ROLLOVER_IND))) {
|
|
struct sk_buff *skb_cmd;
|
|
__le16 data_len = 0;
|
|
u16 evt_len;
|
|
|
|
dev_dbg(adapter->dev, "info: Read Index: %d\n", rdptr);
|
|
skb_cmd = card->evt_buf_list[rdptr];
|
|
/* Take the pointer and set it to event pointer in adapter
|
|
and will return back after event handling callback */
|
|
card->evt_buf_list[rdptr] = NULL;
|
|
card->evtbd_ring[rdptr]->paddr = 0;
|
|
card->evtbd_ring[rdptr]->len = 0;
|
|
card->evtbd_ring[rdptr]->flags = 0;
|
|
|
|
event = *(u32 *) &skb_cmd->data[INTF_HEADER_LEN];
|
|
adapter->event_cause = event;
|
|
/* The first 4bytes will be the event transfer header
|
|
len is 2 bytes followed by type which is 2 bytes */
|
|
memcpy(&data_len, skb_cmd->data, sizeof(__le16));
|
|
evt_len = le16_to_cpu(data_len);
|
|
|
|
skb_pull(skb_cmd, INTF_HEADER_LEN);
|
|
dev_dbg(adapter->dev, "info: Event length: %d\n", evt_len);
|
|
|
|
if ((evt_len > 0) && (evt_len < MAX_EVENT_SIZE))
|
|
memcpy(adapter->event_body, skb_cmd->data +
|
|
MWIFIEX_EVENT_HEADER_LEN, evt_len -
|
|
MWIFIEX_EVENT_HEADER_LEN);
|
|
|
|
adapter->event_received = true;
|
|
adapter->event_skb = skb_cmd;
|
|
|
|
/* Do not update the event read pointer here, wait till the
|
|
buffer is released. This is just to make things simpler,
|
|
we need to find a better method of managing these buffers.
|
|
*/
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Event processing complete handler
|
|
*/
|
|
static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
int ret = 0;
|
|
u32 rdptr = card->evtbd_rdptr & MWIFIEX_EVTBD_MASK;
|
|
u32 wrptr;
|
|
phys_addr_t *buf_pa;
|
|
|
|
if (!skb)
|
|
return 0;
|
|
|
|
if (rdptr >= MWIFIEX_MAX_EVT_BD)
|
|
dev_err(adapter->dev, "event_complete: Invalid rdptr 0x%x\n",
|
|
rdptr);
|
|
|
|
/* Read the event ring write pointer set by firmware */
|
|
if (mwifiex_read_reg(adapter, REG_EVTBD_WRPTR, &wrptr)) {
|
|
dev_err(adapter->dev, "event_complete: failed to read REG_EVTBD_WRPTR\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
if (!card->evt_buf_list[rdptr]) {
|
|
skb_push(skb, INTF_HEADER_LEN);
|
|
card->evt_buf_list[rdptr] = skb;
|
|
buf_pa = MWIFIEX_SKB_PACB(skb);
|
|
card->evtbd_ring[rdptr]->paddr = *buf_pa;
|
|
card->evtbd_ring[rdptr]->len = (u16)skb->len;
|
|
card->evtbd_ring[rdptr]->flags = 0;
|
|
skb = NULL;
|
|
} else {
|
|
dev_dbg(adapter->dev, "info: ERROR: Buffer is still valid at "
|
|
"index %d, <%p, %p>\n", rdptr,
|
|
card->evt_buf_list[rdptr], skb);
|
|
}
|
|
|
|
if ((++card->evtbd_rdptr & MWIFIEX_EVTBD_MASK) == MWIFIEX_MAX_EVT_BD) {
|
|
card->evtbd_rdptr = ((card->evtbd_rdptr &
|
|
MWIFIEX_BD_FLAG_ROLLOVER_IND) ^
|
|
MWIFIEX_BD_FLAG_ROLLOVER_IND);
|
|
}
|
|
|
|
dev_dbg(adapter->dev, "info: Updated <Rd: 0x%x, Wr: 0x%x>",
|
|
card->evtbd_rdptr, wrptr);
|
|
|
|
/* Write the event ring read pointer in to REG_EVTBD_RDPTR */
|
|
if (mwifiex_write_reg(adapter, REG_EVTBD_RDPTR, card->evtbd_rdptr)) {
|
|
dev_err(adapter->dev, "event_complete: failed to read REG_EVTBD_RDPTR\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
/* Free the buffer for failure case */
|
|
if (ret && skb)
|
|
dev_kfree_skb_any(skb);
|
|
|
|
dev_dbg(adapter->dev, "info: Check Events Again\n");
|
|
ret = mwifiex_pcie_process_event_ready(adapter);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function downloads the firmware to the card.
|
|
*
|
|
* Firmware is downloaded to the card in blocks. Every block download
|
|
* is tested for CRC errors, and retried a number of times before
|
|
* returning failure.
|
|
*/
|
|
static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
|
|
struct mwifiex_fw_image *fw)
|
|
{
|
|
int ret;
|
|
u8 *firmware = fw->fw_buf;
|
|
u32 firmware_len = fw->fw_len;
|
|
u32 offset = 0;
|
|
struct sk_buff *skb;
|
|
u32 txlen, tx_blocks = 0, tries, len;
|
|
u32 block_retry_cnt = 0;
|
|
|
|
if (!adapter) {
|
|
pr_err("adapter structure is not valid\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!firmware || !firmware_len) {
|
|
dev_err(adapter->dev, "No firmware image found! "
|
|
"Terminating download\n");
|
|
return -1;
|
|
}
|
|
|
|
dev_dbg(adapter->dev, "info: Downloading FW image (%d bytes)\n",
|
|
firmware_len);
|
|
|
|
if (mwifiex_pcie_disable_host_int(adapter)) {
|
|
dev_err(adapter->dev, "%s: Disabling interrupts"
|
|
" failed.\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
skb = dev_alloc_skb(MWIFIEX_UPLD_SIZE);
|
|
if (!skb) {
|
|
ret = -ENOMEM;
|
|
goto done;
|
|
}
|
|
mwifiex_update_sk_buff_pa(skb);
|
|
|
|
/* Perform firmware data transfer */
|
|
do {
|
|
u32 ireg_intr = 0;
|
|
|
|
/* More data? */
|
|
if (offset >= firmware_len)
|
|
break;
|
|
|
|
for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
|
|
ret = mwifiex_read_reg(adapter, PCIE_SCRATCH_2_REG,
|
|
&len);
|
|
if (ret) {
|
|
dev_warn(adapter->dev, "Failed reading length from boot code\n");
|
|
goto done;
|
|
}
|
|
if (len)
|
|
break;
|
|
udelay(10);
|
|
}
|
|
|
|
if (!len) {
|
|
break;
|
|
} else if (len > MWIFIEX_UPLD_SIZE) {
|
|
pr_err("FW download failure @ %d, invalid length %d\n",
|
|
offset, len);
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
|
|
txlen = len;
|
|
|
|
if (len & BIT(0)) {
|
|
block_retry_cnt++;
|
|
if (block_retry_cnt > MAX_WRITE_IOMEM_RETRY) {
|
|
pr_err("FW download failure @ %d, over max "
|
|
"retry count\n", offset);
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
dev_err(adapter->dev, "FW CRC error indicated by the "
|
|
"helper: len = 0x%04X, txlen = "
|
|
"%d\n", len, txlen);
|
|
len &= ~BIT(0);
|
|
/* Setting this to 0 to resend from same offset */
|
|
txlen = 0;
|
|
} else {
|
|
block_retry_cnt = 0;
|
|
/* Set blocksize to transfer - checking for
|
|
last block */
|
|
if (firmware_len - offset < txlen)
|
|
txlen = firmware_len - offset;
|
|
|
|
dev_dbg(adapter->dev, ".");
|
|
|
|
tx_blocks =
|
|
(txlen + MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD - 1) /
|
|
MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD;
|
|
|
|
/* Copy payload to buffer */
|
|
memmove(skb->data, &firmware[offset], txlen);
|
|
}
|
|
|
|
skb_put(skb, MWIFIEX_UPLD_SIZE - skb->len);
|
|
skb_trim(skb, tx_blocks * MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD);
|
|
|
|
/* Send the boot command to device */
|
|
if (mwifiex_pcie_send_boot_cmd(adapter, skb)) {
|
|
dev_err(adapter->dev, "Failed to send firmware download command\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
/* Wait for the command done interrupt */
|
|
do {
|
|
if (mwifiex_read_reg(adapter, PCIE_CPU_INT_STATUS,
|
|
&ireg_intr)) {
|
|
dev_err(adapter->dev, "%s: Failed to read "
|
|
"interrupt status during "
|
|
"fw dnld.\n", __func__);
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
} while ((ireg_intr & CPU_INTR_DOOR_BELL) ==
|
|
CPU_INTR_DOOR_BELL);
|
|
offset += txlen;
|
|
} while (true);
|
|
|
|
dev_dbg(adapter->dev, "info:\nFW download over, size %d bytes\n",
|
|
offset);
|
|
|
|
ret = 0;
|
|
|
|
done:
|
|
dev_kfree_skb_any(skb);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function checks the firmware status in card.
|
|
*
|
|
* The winner interface is also determined by this function.
|
|
*/
|
|
static int
|
|
mwifiex_check_fw_status(struct mwifiex_adapter *adapter, u32 poll_num)
|
|
{
|
|
int ret = 0;
|
|
u32 firmware_stat, winner_status;
|
|
u32 tries;
|
|
|
|
/* Mask spurios interrupts */
|
|
if (mwifiex_write_reg(adapter, PCIE_HOST_INT_STATUS_MASK,
|
|
HOST_INTR_MASK)) {
|
|
dev_warn(adapter->dev, "Write register failed\n");
|
|
return -1;
|
|
}
|
|
|
|
dev_dbg(adapter->dev, "Setting driver ready signature\n");
|
|
if (mwifiex_write_reg(adapter, REG_DRV_READY, FIRMWARE_READY_PCIE)) {
|
|
dev_err(adapter->dev, "Failed to write driver ready signature\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Wait for firmware initialization event */
|
|
for (tries = 0; tries < poll_num; tries++) {
|
|
if (mwifiex_read_reg(adapter, PCIE_SCRATCH_3_REG,
|
|
&firmware_stat))
|
|
ret = -1;
|
|
else
|
|
ret = 0;
|
|
if (ret)
|
|
continue;
|
|
if (firmware_stat == FIRMWARE_READY_PCIE) {
|
|
ret = 0;
|
|
break;
|
|
} else {
|
|
mdelay(100);
|
|
ret = -1;
|
|
}
|
|
}
|
|
|
|
if (ret) {
|
|
if (mwifiex_read_reg(adapter, PCIE_SCRATCH_3_REG,
|
|
&winner_status))
|
|
ret = -1;
|
|
else if (!winner_status) {
|
|
dev_err(adapter->dev, "PCI-E is the winner\n");
|
|
adapter->winner = 1;
|
|
ret = -1;
|
|
} else {
|
|
dev_err(adapter->dev, "PCI-E is not the winner <%#x, %d>, exit download\n",
|
|
ret, adapter->winner);
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function reads the interrupt status from card.
|
|
*/
|
|
static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
|
|
{
|
|
u32 pcie_ireg;
|
|
unsigned long flags;
|
|
|
|
if (!mwifiex_pcie_ok_to_access_hw(adapter))
|
|
return;
|
|
|
|
if (mwifiex_read_reg(adapter, PCIE_HOST_INT_STATUS, &pcie_ireg)) {
|
|
dev_warn(adapter->dev, "Read register failed\n");
|
|
return;
|
|
}
|
|
|
|
if ((pcie_ireg != 0xFFFFFFFF) && (pcie_ireg)) {
|
|
|
|
mwifiex_pcie_disable_host_int(adapter);
|
|
|
|
/* Clear the pending interrupts */
|
|
if (mwifiex_write_reg(adapter, PCIE_HOST_INT_STATUS,
|
|
~pcie_ireg)) {
|
|
dev_warn(adapter->dev, "Write register failed\n");
|
|
return;
|
|
}
|
|
spin_lock_irqsave(&adapter->int_lock, flags);
|
|
adapter->int_status |= pcie_ireg;
|
|
spin_unlock_irqrestore(&adapter->int_lock, flags);
|
|
|
|
if (pcie_ireg & HOST_INTR_CMD_DONE) {
|
|
if ((adapter->ps_state == PS_STATE_SLEEP_CFM) ||
|
|
(adapter->ps_state == PS_STATE_SLEEP)) {
|
|
mwifiex_pcie_enable_host_int(adapter);
|
|
if (mwifiex_write_reg(adapter,
|
|
PCIE_CPU_INT_EVENT,
|
|
CPU_INTR_SLEEP_CFM_DONE)) {
|
|
dev_warn(adapter->dev, "Write register"
|
|
" failed\n");
|
|
return;
|
|
|
|
}
|
|
}
|
|
} else if (!adapter->pps_uapsd_mode &&
|
|
adapter->ps_state == PS_STATE_SLEEP) {
|
|
/* Potentially for PCIe we could get other
|
|
* interrupts like shared. Don't change power
|
|
* state until cookie is set */
|
|
if (mwifiex_pcie_ok_to_access_hw(adapter))
|
|
adapter->ps_state = PS_STATE_AWAKE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Interrupt handler for PCIe root port
|
|
*
|
|
* This function reads the interrupt status from firmware and assigns
|
|
* the main process in workqueue which will handle the interrupt.
|
|
*/
|
|
static irqreturn_t mwifiex_pcie_interrupt(int irq, void *context)
|
|
{
|
|
struct pci_dev *pdev = (struct pci_dev *)context;
|
|
struct pcie_service_card *card;
|
|
struct mwifiex_adapter *adapter;
|
|
|
|
if (!pdev) {
|
|
pr_debug("info: %s: pdev is NULL\n", (u8 *)pdev);
|
|
goto exit;
|
|
}
|
|
|
|
card = (struct pcie_service_card *) pci_get_drvdata(pdev);
|
|
if (!card || !card->adapter) {
|
|
pr_debug("info: %s: card=%p adapter=%p\n", __func__, card,
|
|
card ? card->adapter : NULL);
|
|
goto exit;
|
|
}
|
|
adapter = card->adapter;
|
|
|
|
if (adapter->surprise_removed)
|
|
goto exit;
|
|
|
|
mwifiex_interrupt_status(adapter);
|
|
queue_work(adapter->workqueue, &adapter->main_work);
|
|
|
|
exit:
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*
|
|
* This function checks the current interrupt status.
|
|
*
|
|
* The following interrupts are checked and handled by this function -
|
|
* - Data sent
|
|
* - Command sent
|
|
* - Command received
|
|
* - Packets received
|
|
* - Events received
|
|
*
|
|
* In case of Rx packets received, the packets are uploaded from card to
|
|
* host and processed accordingly.
|
|
*/
|
|
static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
|
|
{
|
|
int ret;
|
|
u32 pcie_ireg = 0;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&adapter->int_lock, flags);
|
|
/* Clear out unused interrupts */
|
|
adapter->int_status &= HOST_INTR_MASK;
|
|
spin_unlock_irqrestore(&adapter->int_lock, flags);
|
|
|
|
while (adapter->int_status & HOST_INTR_MASK) {
|
|
if (adapter->int_status & HOST_INTR_DNLD_DONE) {
|
|
adapter->int_status &= ~HOST_INTR_DNLD_DONE;
|
|
if (adapter->data_sent) {
|
|
dev_dbg(adapter->dev, "info: DATA sent Interrupt\n");
|
|
adapter->data_sent = false;
|
|
}
|
|
}
|
|
if (adapter->int_status & HOST_INTR_UPLD_RDY) {
|
|
adapter->int_status &= ~HOST_INTR_UPLD_RDY;
|
|
dev_dbg(adapter->dev, "info: Rx DATA\n");
|
|
ret = mwifiex_pcie_process_recv_data(adapter);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
if (adapter->int_status & HOST_INTR_EVENT_RDY) {
|
|
adapter->int_status &= ~HOST_INTR_EVENT_RDY;
|
|
dev_dbg(adapter->dev, "info: Rx EVENT\n");
|
|
ret = mwifiex_pcie_process_event_ready(adapter);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (adapter->int_status & HOST_INTR_CMD_DONE) {
|
|
adapter->int_status &= ~HOST_INTR_CMD_DONE;
|
|
if (adapter->cmd_sent) {
|
|
dev_dbg(adapter->dev, "info: CMD sent Interrupt\n");
|
|
adapter->cmd_sent = false;
|
|
}
|
|
/* Handle command response */
|
|
ret = mwifiex_pcie_process_cmd_complete(adapter);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
if (mwifiex_pcie_ok_to_access_hw(adapter)) {
|
|
if (mwifiex_read_reg(adapter, PCIE_HOST_INT_STATUS,
|
|
&pcie_ireg)) {
|
|
dev_warn(adapter->dev, "Read register failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((pcie_ireg != 0xFFFFFFFF) && (pcie_ireg)) {
|
|
if (mwifiex_write_reg(adapter,
|
|
PCIE_HOST_INT_STATUS, ~pcie_ireg)) {
|
|
dev_warn(adapter->dev, "Write register"
|
|
" failed\n");
|
|
return -1;
|
|
}
|
|
adapter->int_status |= pcie_ireg;
|
|
adapter->int_status &= HOST_INTR_MASK;
|
|
}
|
|
|
|
}
|
|
}
|
|
dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n",
|
|
adapter->cmd_sent, adapter->data_sent);
|
|
mwifiex_pcie_enable_host_int(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function downloads data from driver to card.
|
|
*
|
|
* Both commands and data packets are transferred to the card by this
|
|
* function.
|
|
*
|
|
* This function adds the PCIE specific header to the front of the buffer
|
|
* before transferring. The header contains the length of the packet and
|
|
* the type. The firmware handles the packets based upon this set type.
|
|
*/
|
|
static int mwifiex_pcie_host_to_card(struct mwifiex_adapter *adapter, u8 type,
|
|
struct sk_buff *skb,
|
|
struct mwifiex_tx_param *tx_param)
|
|
{
|
|
if (!adapter || !skb) {
|
|
dev_err(adapter->dev, "Invalid parameter in %s <%p, %p>\n",
|
|
__func__, adapter, skb);
|
|
return -1;
|
|
}
|
|
|
|
if (type == MWIFIEX_TYPE_DATA)
|
|
return mwifiex_pcie_send_data(adapter, skb);
|
|
else if (type == MWIFIEX_TYPE_CMD)
|
|
return mwifiex_pcie_send_cmd(adapter, skb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function initializes the PCI-E host memory space, WCB rings, etc.
|
|
*
|
|
* The following initializations steps are followed -
|
|
* - Allocate TXBD ring buffers
|
|
* - Allocate RXBD ring buffers
|
|
* - Allocate event BD ring buffers
|
|
* - Allocate command response ring buffer
|
|
* - Allocate sleep cookie buffer
|
|
*/
|
|
static int mwifiex_pcie_init(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
int ret;
|
|
struct pci_dev *pdev = card->dev;
|
|
|
|
pci_set_drvdata(pdev, card);
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret)
|
|
goto err_enable_dev;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
dev_dbg(adapter->dev, "try set_consistent_dma_mask(32)\n");
|
|
ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (ret) {
|
|
dev_err(adapter->dev, "set_dma_mask(32) failed\n");
|
|
goto err_set_dma_mask;
|
|
}
|
|
|
|
ret = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (ret) {
|
|
dev_err(adapter->dev, "set_consistent_dma_mask(64) failed\n");
|
|
goto err_set_dma_mask;
|
|
}
|
|
|
|
ret = pci_request_region(pdev, 0, DRV_NAME);
|
|
if (ret) {
|
|
dev_err(adapter->dev, "req_reg(0) error\n");
|
|
goto err_req_region0;
|
|
}
|
|
card->pci_mmap = pci_iomap(pdev, 0, 0);
|
|
if (!card->pci_mmap) {
|
|
dev_err(adapter->dev, "iomap(0) error\n");
|
|
goto err_iomap0;
|
|
}
|
|
ret = pci_request_region(pdev, 2, DRV_NAME);
|
|
if (ret) {
|
|
dev_err(adapter->dev, "req_reg(2) error\n");
|
|
goto err_req_region2;
|
|
}
|
|
card->pci_mmap1 = pci_iomap(pdev, 2, 0);
|
|
if (!card->pci_mmap1) {
|
|
dev_err(adapter->dev, "iomap(2) error\n");
|
|
goto err_iomap2;
|
|
}
|
|
|
|
dev_dbg(adapter->dev, "PCI memory map Virt0: %p PCI memory map Virt2: "
|
|
"%p\n", card->pci_mmap, card->pci_mmap1);
|
|
|
|
card->cmdrsp_buf = NULL;
|
|
ret = mwifiex_pcie_create_txbd_ring(adapter);
|
|
if (ret)
|
|
goto err_cre_txbd;
|
|
ret = mwifiex_pcie_create_rxbd_ring(adapter);
|
|
if (ret)
|
|
goto err_cre_rxbd;
|
|
ret = mwifiex_pcie_create_evtbd_ring(adapter);
|
|
if (ret)
|
|
goto err_cre_evtbd;
|
|
ret = mwifiex_pcie_alloc_cmdrsp_buf(adapter);
|
|
if (ret)
|
|
goto err_alloc_cmdbuf;
|
|
ret = mwifiex_pcie_alloc_sleep_cookie_buf(adapter);
|
|
if (ret)
|
|
goto err_alloc_cookie;
|
|
|
|
return ret;
|
|
|
|
err_alloc_cookie:
|
|
mwifiex_pcie_delete_cmdrsp_buf(adapter);
|
|
err_alloc_cmdbuf:
|
|
mwifiex_pcie_delete_evtbd_ring(adapter);
|
|
err_cre_evtbd:
|
|
mwifiex_pcie_delete_rxbd_ring(adapter);
|
|
err_cre_rxbd:
|
|
mwifiex_pcie_delete_txbd_ring(adapter);
|
|
err_cre_txbd:
|
|
pci_iounmap(pdev, card->pci_mmap1);
|
|
err_iomap2:
|
|
pci_release_region(pdev, 2);
|
|
err_req_region2:
|
|
pci_iounmap(pdev, card->pci_mmap);
|
|
err_iomap0:
|
|
pci_release_region(pdev, 0);
|
|
err_req_region0:
|
|
err_set_dma_mask:
|
|
pci_disable_device(pdev);
|
|
err_enable_dev:
|
|
pci_set_drvdata(pdev, NULL);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function cleans up the allocated card buffers.
|
|
*
|
|
* The following are freed by this function -
|
|
* - TXBD ring buffers
|
|
* - RXBD ring buffers
|
|
* - Event BD ring buffers
|
|
* - Command response ring buffer
|
|
* - Sleep cookie buffer
|
|
*/
|
|
static void mwifiex_pcie_cleanup(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
struct pci_dev *pdev = card->dev;
|
|
|
|
mwifiex_pcie_delete_sleep_cookie_buf(adapter);
|
|
mwifiex_pcie_delete_cmdrsp_buf(adapter);
|
|
mwifiex_pcie_delete_evtbd_ring(adapter);
|
|
mwifiex_pcie_delete_rxbd_ring(adapter);
|
|
mwifiex_pcie_delete_txbd_ring(adapter);
|
|
card->cmdrsp_buf = NULL;
|
|
|
|
dev_dbg(adapter->dev, "Clearing driver ready signature\n");
|
|
if (user_rmmod) {
|
|
if (mwifiex_write_reg(adapter, REG_DRV_READY, 0x00000000))
|
|
dev_err(adapter->dev, "Failed to write driver not-ready signature\n");
|
|
}
|
|
|
|
if (pdev) {
|
|
pci_iounmap(pdev, card->pci_mmap);
|
|
pci_iounmap(pdev, card->pci_mmap1);
|
|
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function registers the PCIE device.
|
|
*
|
|
* PCIE IRQ is claimed, block size is set and driver data is initialized.
|
|
*/
|
|
static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
|
|
{
|
|
int ret;
|
|
struct pcie_service_card *card = adapter->card;
|
|
struct pci_dev *pdev = card->dev;
|
|
|
|
/* save adapter pointer in card */
|
|
card->adapter = adapter;
|
|
|
|
ret = request_irq(pdev->irq, mwifiex_pcie_interrupt, IRQF_SHARED,
|
|
"MRVL_PCIE", pdev);
|
|
if (ret) {
|
|
pr_err("request_irq failed: ret=%d\n", ret);
|
|
adapter->card = NULL;
|
|
return -1;
|
|
}
|
|
|
|
adapter->dev = &pdev->dev;
|
|
strcpy(adapter->fw_name, PCIE8766_DEFAULT_FW_NAME);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function unregisters the PCIE device.
|
|
*
|
|
* The PCIE IRQ is released, the function is disabled and driver
|
|
* data is set to null.
|
|
*/
|
|
static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
|
|
{
|
|
struct pcie_service_card *card = adapter->card;
|
|
|
|
if (card) {
|
|
dev_dbg(adapter->dev, "%s(): calling free_irq()\n", __func__);
|
|
free_irq(card->dev->irq, card->dev);
|
|
}
|
|
}
|
|
|
|
static struct mwifiex_if_ops pcie_ops = {
|
|
.init_if = mwifiex_pcie_init,
|
|
.cleanup_if = mwifiex_pcie_cleanup,
|
|
.check_fw_status = mwifiex_check_fw_status,
|
|
.prog_fw = mwifiex_prog_fw_w_helper,
|
|
.register_dev = mwifiex_register_dev,
|
|
.unregister_dev = mwifiex_unregister_dev,
|
|
.enable_int = mwifiex_pcie_enable_host_int,
|
|
.process_int_status = mwifiex_process_int_status,
|
|
.host_to_card = mwifiex_pcie_host_to_card,
|
|
.wakeup = mwifiex_pm_wakeup_card,
|
|
.wakeup_complete = mwifiex_pm_wakeup_card_complete,
|
|
|
|
/* PCIE specific */
|
|
.cmdrsp_complete = mwifiex_pcie_cmdrsp_complete,
|
|
.event_complete = mwifiex_pcie_event_complete,
|
|
.update_mp_end_port = NULL,
|
|
.cleanup_mpa_buf = NULL,
|
|
};
|
|
|
|
/*
|
|
* This function initializes the PCIE driver module.
|
|
*
|
|
* This initiates the semaphore and registers the device with
|
|
* PCIE bus.
|
|
*/
|
|
static int mwifiex_pcie_init_module(void)
|
|
{
|
|
int ret;
|
|
|
|
pr_debug("Marvell 8766 PCIe Driver\n");
|
|
|
|
sema_init(&add_remove_card_sem, 1);
|
|
|
|
/* Clear the flag in case user removes the card. */
|
|
user_rmmod = 0;
|
|
|
|
ret = pci_register_driver(&mwifiex_pcie);
|
|
if (ret)
|
|
pr_err("Driver register failed!\n");
|
|
else
|
|
pr_debug("info: Driver registered successfully!\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* This function cleans up the PCIE driver.
|
|
*
|
|
* The following major steps are followed for cleanup -
|
|
* - Resume the device if its suspended
|
|
* - Disconnect the device if connected
|
|
* - Shutdown the firmware
|
|
* - Unregister the device from PCIE bus.
|
|
*/
|
|
static void mwifiex_pcie_cleanup_module(void)
|
|
{
|
|
if (!down_interruptible(&add_remove_card_sem))
|
|
up(&add_remove_card_sem);
|
|
|
|
/* Set the flag as user is removing this module. */
|
|
user_rmmod = 1;
|
|
|
|
pci_unregister_driver(&mwifiex_pcie);
|
|
}
|
|
|
|
module_init(mwifiex_pcie_init_module);
|
|
module_exit(mwifiex_pcie_cleanup_module);
|
|
|
|
MODULE_AUTHOR("Marvell International Ltd.");
|
|
MODULE_DESCRIPTION("Marvell WiFi-Ex PCI-Express Driver version " PCIE_VERSION);
|
|
MODULE_VERSION(PCIE_VERSION);
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_FIRMWARE("mrvl/pcie8766_uapsta.bin");
|