// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2002 Intersil Americas Inc. * Copyright (C) 2003 Herbert Valerio Riedel * Copyright (C) 2003 Luis R. Rodriguez */ #include #include #include #include #include #include #include #include #include #include #include #include "prismcompat.h" #include "isl_38xx.h" #include "isl_ioctl.h" #include "islpci_dev.h" #include "islpci_mgt.h" #include "islpci_eth.h" #include "oid_mgt.h" #define ISL3877_IMAGE_FILE "isl3877" #define ISL3886_IMAGE_FILE "isl3886" #define ISL3890_IMAGE_FILE "isl3890" MODULE_FIRMWARE(ISL3877_IMAGE_FILE); MODULE_FIRMWARE(ISL3886_IMAGE_FILE); MODULE_FIRMWARE(ISL3890_IMAGE_FILE); static int prism54_bring_down(islpci_private *); static int islpci_alloc_memory(islpci_private *); /* Temporary dummy MAC address to use until firmware is loaded. * The idea there is that some tools (such as nameif) may query * the MAC address before the netdev is 'open'. By using a valid * OUI prefix, they can process the netdev properly. * Of course, this is not the final/real MAC address. It doesn't * matter, as you are suppose to be able to change it anytime via * ndev->set_mac_address. Jean II */ static const unsigned char dummy_mac[6] = { 0x00, 0x30, 0xB4, 0x00, 0x00, 0x00 }; static int isl_upload_firmware(islpci_private *priv) { u32 reg, rc; void __iomem *device_base = priv->device_base; /* clear the RAMBoot and the Reset bit */ reg = readl(device_base + ISL38XX_CTRL_STAT_REG); reg &= ~ISL38XX_CTRL_STAT_RESET; reg &= ~ISL38XX_CTRL_STAT_RAMBOOT; writel(reg, device_base + ISL38XX_CTRL_STAT_REG); wmb(); udelay(ISL38XX_WRITEIO_DELAY); /* set the Reset bit without reading the register ! */ reg |= ISL38XX_CTRL_STAT_RESET; writel(reg, device_base + ISL38XX_CTRL_STAT_REG); wmb(); udelay(ISL38XX_WRITEIO_DELAY); /* clear the Reset bit */ reg &= ~ISL38XX_CTRL_STAT_RESET; writel(reg, device_base + ISL38XX_CTRL_STAT_REG); wmb(); /* wait a while for the device to reboot */ mdelay(50); { const struct firmware *fw_entry = NULL; long fw_len; const u32 *fw_ptr; rc = request_firmware(&fw_entry, priv->firmware, PRISM_FW_PDEV); if (rc) { printk(KERN_ERR "%s: request_firmware() failed for '%s'\n", "prism54", priv->firmware); return rc; } /* prepare the Direct Memory Base register */ reg = ISL38XX_DEV_FIRMWARE_ADDRES; fw_ptr = (u32 *) fw_entry->data; fw_len = fw_entry->size; if (fw_len % 4) { printk(KERN_ERR "%s: firmware '%s' size is not multiple of 32bit, aborting!\n", "prism54", priv->firmware); release_firmware(fw_entry); return -EILSEQ; /* Illegal byte sequence */; } while (fw_len > 0) { long _fw_len = (fw_len > ISL38XX_MEMORY_WINDOW_SIZE) ? ISL38XX_MEMORY_WINDOW_SIZE : fw_len; u32 __iomem *dev_fw_ptr = device_base + ISL38XX_DIRECT_MEM_WIN; /* set the card's base address for writing the data */ isl38xx_w32_flush(device_base, reg, ISL38XX_DIR_MEM_BASE_REG); wmb(); /* be paranoid */ /* increment the write address for next iteration */ reg += _fw_len; fw_len -= _fw_len; /* write the data to the Direct Memory Window 32bit-wise */ /* memcpy_toio() doesn't guarantee 32bit writes :-| */ while (_fw_len > 0) { /* use non-swapping writel() */ __raw_writel(*fw_ptr, dev_fw_ptr); fw_ptr++, dev_fw_ptr++; _fw_len -= 4; } /* flush PCI posting */ (void) readl(device_base + ISL38XX_PCI_POSTING_FLUSH); wmb(); /* be paranoid again */ BUG_ON(_fw_len != 0); } BUG_ON(fw_len != 0); /* Firmware version is at offset 40 (also for "newmac") */ printk(KERN_DEBUG "%s: firmware version: %.8s\n", priv->ndev->name, fw_entry->data + 40); release_firmware(fw_entry); } /* now reset the device * clear the Reset & ClkRun bit, set the RAMBoot bit */ reg = readl(device_base + ISL38XX_CTRL_STAT_REG); reg &= ~ISL38XX_CTRL_STAT_CLKRUN; reg &= ~ISL38XX_CTRL_STAT_RESET; reg |= ISL38XX_CTRL_STAT_RAMBOOT; isl38xx_w32_flush(device_base, reg, ISL38XX_CTRL_STAT_REG); wmb(); udelay(ISL38XX_WRITEIO_DELAY); /* set the reset bit latches the host override and RAMBoot bits * into the device for operation when the reset bit is reset */ reg |= ISL38XX_CTRL_STAT_RESET; writel(reg, device_base + ISL38XX_CTRL_STAT_REG); /* don't do flush PCI posting here! */ wmb(); udelay(ISL38XX_WRITEIO_DELAY); /* clear the reset bit should start the whole circus */ reg &= ~ISL38XX_CTRL_STAT_RESET; writel(reg, device_base + ISL38XX_CTRL_STAT_REG); /* don't do flush PCI posting here! */ wmb(); udelay(ISL38XX_WRITEIO_DELAY); return 0; } /****************************************************************************** Device Interrupt Handler ******************************************************************************/ irqreturn_t islpci_interrupt(int irq, void *config) { u32 reg; islpci_private *priv = config; struct net_device *ndev = priv->ndev; void __iomem *device = priv->device_base; int powerstate = ISL38XX_PSM_POWERSAVE_STATE; /* lock the interrupt handler */ spin_lock(&priv->slock); /* received an interrupt request on a shared IRQ line * first check whether the device is in sleep mode */ reg = readl(device + ISL38XX_CTRL_STAT_REG); if (reg & ISL38XX_CTRL_STAT_SLEEPMODE) /* device is in sleep mode, IRQ was generated by someone else */ { #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_TRACING, "Assuming someone else called the IRQ\n"); #endif spin_unlock(&priv->slock); return IRQ_NONE; } /* check whether there is any source of interrupt on the device */ reg = readl(device + ISL38XX_INT_IDENT_REG); /* also check the contents of the Interrupt Enable Register, because this * will filter out interrupt sources from other devices on the same irq ! */ reg &= readl(device + ISL38XX_INT_EN_REG); reg &= ISL38XX_INT_SOURCES; if (reg != 0) { if (islpci_get_state(priv) != PRV_STATE_SLEEP) powerstate = ISL38XX_PSM_ACTIVE_STATE; /* reset the request bits in the Identification register */ isl38xx_w32_flush(device, reg, ISL38XX_INT_ACK_REG); #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_FUNCTION_CALLS, "IRQ: Identification register 0x%p 0x%x\n", device, reg); #endif /* check for each bit in the register separately */ if (reg & ISL38XX_INT_IDENT_UPDATE) { #if VERBOSE > SHOW_ERROR_MESSAGES /* Queue has been updated */ DEBUG(SHOW_TRACING, "IRQ: Update flag\n"); DEBUG(SHOW_QUEUE_INDEXES, "CB drv Qs: [%i][%i][%i][%i][%i][%i]\n", le32_to_cpu(priv->control_block-> driver_curr_frag[0]), le32_to_cpu(priv->control_block-> driver_curr_frag[1]), le32_to_cpu(priv->control_block-> driver_curr_frag[2]), le32_to_cpu(priv->control_block-> driver_curr_frag[3]), le32_to_cpu(priv->control_block-> driver_curr_frag[4]), le32_to_cpu(priv->control_block-> driver_curr_frag[5]) ); DEBUG(SHOW_QUEUE_INDEXES, "CB dev Qs: [%i][%i][%i][%i][%i][%i]\n", le32_to_cpu(priv->control_block-> device_curr_frag[0]), le32_to_cpu(priv->control_block-> device_curr_frag[1]), le32_to_cpu(priv->control_block-> device_curr_frag[2]), le32_to_cpu(priv->control_block-> device_curr_frag[3]), le32_to_cpu(priv->control_block-> device_curr_frag[4]), le32_to_cpu(priv->control_block-> device_curr_frag[5]) ); #endif /* cleanup the data low transmit queue */ islpci_eth_cleanup_transmit(priv, priv->control_block); /* device is in active state, update the * powerstate flag if necessary */ powerstate = ISL38XX_PSM_ACTIVE_STATE; /* check all three queues in priority order * call the PIMFOR receive function until the * queue is empty */ if (isl38xx_in_queue(priv->control_block, ISL38XX_CB_RX_MGMTQ) != 0) { #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_TRACING, "Received frame in Management Queue\n"); #endif islpci_mgt_receive(ndev); islpci_mgt_cleanup_transmit(ndev); /* Refill slots in receive queue */ islpci_mgmt_rx_fill(ndev); /* no need to trigger the device, next islpci_mgt_transaction does it */ } while (isl38xx_in_queue(priv->control_block, ISL38XX_CB_RX_DATA_LQ) != 0) { #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_TRACING, "Received frame in Data Low Queue\n"); #endif islpci_eth_receive(priv); } /* check whether the data transmit queues were full */ if (priv->data_low_tx_full) { /* check whether the transmit is not full anymore */ if (ISL38XX_CB_TX_QSIZE - isl38xx_in_queue(priv->control_block, ISL38XX_CB_TX_DATA_LQ) >= ISL38XX_MIN_QTHRESHOLD) { /* nope, the driver is ready for more network frames */ netif_wake_queue(priv->ndev); /* reset the full flag */ priv->data_low_tx_full = 0; } } } if (reg & ISL38XX_INT_IDENT_INIT) { /* Device has been initialized */ #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_TRACING, "IRQ: Init flag, device initialized\n"); #endif wake_up(&priv->reset_done); } if (reg & ISL38XX_INT_IDENT_SLEEP) { /* Device intends to move to powersave state */ #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_TRACING, "IRQ: Sleep flag\n"); #endif isl38xx_handle_sleep_request(priv->control_block, &powerstate, priv->device_base); } if (reg & ISL38XX_INT_IDENT_WAKEUP) { /* Device has been woken up to active state */ #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_TRACING, "IRQ: Wakeup flag\n"); #endif isl38xx_handle_wakeup(priv->control_block, &powerstate, priv->device_base); } } else { #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_TRACING, "Assuming someone else called the IRQ\n"); #endif spin_unlock(&priv->slock); return IRQ_NONE; } /* sleep -> ready */ if (islpci_get_state(priv) == PRV_STATE_SLEEP && powerstate == ISL38XX_PSM_ACTIVE_STATE) islpci_set_state(priv, PRV_STATE_READY); /* !sleep -> sleep */ if (islpci_get_state(priv) != PRV_STATE_SLEEP && powerstate == ISL38XX_PSM_POWERSAVE_STATE) islpci_set_state(priv, PRV_STATE_SLEEP); /* unlock the interrupt handler */ spin_unlock(&priv->slock); return IRQ_HANDLED; } /****************************************************************************** Network Interface Control & Statistical functions ******************************************************************************/ static int islpci_open(struct net_device *ndev) { u32 rc; islpci_private *priv = netdev_priv(ndev); /* reset data structures, upload firmware and reset device */ rc = islpci_reset(priv,1); if (rc) { prism54_bring_down(priv); return rc; /* Returns informative message */ } netif_start_queue(ndev); /* Turn off carrier if in STA or Ad-hoc mode. It will be turned on * once the firmware receives a trap of being associated * (GEN_OID_LINKSTATE). In other modes (AP or WDS or monitor) we * should just leave the carrier on as its expected the firmware * won't send us a trigger. */ if (priv->iw_mode == IW_MODE_INFRA || priv->iw_mode == IW_MODE_ADHOC) netif_carrier_off(ndev); else netif_carrier_on(ndev); return 0; } static int islpci_close(struct net_device *ndev) { islpci_private *priv = netdev_priv(ndev); printk(KERN_DEBUG "%s: islpci_close ()\n", ndev->name); netif_stop_queue(ndev); return prism54_bring_down(priv); } static int prism54_bring_down(islpci_private *priv) { void __iomem *device_base = priv->device_base; u32 reg; /* we are going to shutdown the device */ islpci_set_state(priv, PRV_STATE_PREBOOT); /* disable all device interrupts in case they weren't */ isl38xx_disable_interrupts(priv->device_base); /* For safety reasons, we may want to ensure that no DMA transfer is * currently in progress by emptying the TX and RX queues. */ /* wait until interrupts have finished executing on other CPUs */ synchronize_irq(priv->pdev->irq); reg = readl(device_base + ISL38XX_CTRL_STAT_REG); reg &= ~(ISL38XX_CTRL_STAT_RESET | ISL38XX_CTRL_STAT_RAMBOOT); writel(reg, device_base + ISL38XX_CTRL_STAT_REG); wmb(); udelay(ISL38XX_WRITEIO_DELAY); reg |= ISL38XX_CTRL_STAT_RESET; writel(reg, device_base + ISL38XX_CTRL_STAT_REG); wmb(); udelay(ISL38XX_WRITEIO_DELAY); /* clear the Reset bit */ reg &= ~ISL38XX_CTRL_STAT_RESET; writel(reg, device_base + ISL38XX_CTRL_STAT_REG); wmb(); /* wait a while for the device to reset */ schedule_timeout_uninterruptible(msecs_to_jiffies(50)); return 0; } static int islpci_upload_fw(islpci_private *priv) { islpci_state_t old_state; u32 rc; old_state = islpci_set_state(priv, PRV_STATE_BOOT); printk(KERN_DEBUG "%s: uploading firmware...\n", priv->ndev->name); rc = isl_upload_firmware(priv); if (rc) { /* error uploading the firmware */ printk(KERN_ERR "%s: could not upload firmware ('%s')\n", priv->ndev->name, priv->firmware); islpci_set_state(priv, old_state); return rc; } printk(KERN_DEBUG "%s: firmware upload complete\n", priv->ndev->name); islpci_set_state(priv, PRV_STATE_POSTBOOT); return 0; } static int islpci_reset_if(islpci_private *priv) { long remaining; int result = -ETIME; int count; DEFINE_WAIT(wait); prepare_to_wait(&priv->reset_done, &wait, TASK_UNINTERRUPTIBLE); /* now the last step is to reset the interface */ isl38xx_interface_reset(priv->device_base, priv->device_host_address); islpci_set_state(priv, PRV_STATE_PREINIT); for(count = 0; count < 2 && result; count++) { /* The software reset acknowledge needs about 220 msec here. * Be conservative and wait for up to one second. */ remaining = schedule_timeout_uninterruptible(HZ); if(remaining > 0) { result = 0; break; } /* If we're here it's because our IRQ hasn't yet gone through. * Retry a bit more... */ printk(KERN_ERR "%s: no 'reset complete' IRQ seen - retrying\n", priv->ndev->name); } finish_wait(&priv->reset_done, &wait); if (result) { printk(KERN_ERR "%s: interface reset failure\n", priv->ndev->name); return result; } islpci_set_state(priv, PRV_STATE_INIT); /* Now that the device is 100% up, let's allow * for the other interrupts -- * NOTE: this is not *yet* true since we've only allowed the * INIT interrupt on the IRQ line. We can perhaps poll * the IRQ line until we know for sure the reset went through */ isl38xx_enable_common_interrupts(priv->device_base); down_write(&priv->mib_sem); result = mgt_commit(priv); if (result) { printk(KERN_ERR "%s: interface reset failure\n", priv->ndev->name); up_write(&priv->mib_sem); return result; } up_write(&priv->mib_sem); islpci_set_state(priv, PRV_STATE_READY); printk(KERN_DEBUG "%s: interface reset complete\n", priv->ndev->name); return 0; } int islpci_reset(islpci_private *priv, int reload_firmware) { isl38xx_control_block *cb = /* volatile not needed */ (isl38xx_control_block *) priv->control_block; unsigned counter; int rc; if (reload_firmware) islpci_set_state(priv, PRV_STATE_PREBOOT); else islpci_set_state(priv, PRV_STATE_POSTBOOT); printk(KERN_DEBUG "%s: resetting device...\n", priv->ndev->name); /* disable all device interrupts in case they weren't */ isl38xx_disable_interrupts(priv->device_base); /* flush all management queues */ priv->index_mgmt_tx = 0; priv->index_mgmt_rx = 0; /* clear the indexes in the frame pointer */ for (counter = 0; counter < ISL38XX_CB_QCOUNT; counter++) { cb->driver_curr_frag[counter] = cpu_to_le32(0); cb->device_curr_frag[counter] = cpu_to_le32(0); } /* reset the mgmt receive queue */ for (counter = 0; counter < ISL38XX_CB_MGMT_QSIZE; counter++) { isl38xx_fragment *frag = &cb->rx_data_mgmt[counter]; frag->size = cpu_to_le16(MGMT_FRAME_SIZE); frag->flags = 0; frag->address = cpu_to_le32(priv->mgmt_rx[counter].pci_addr); } for (counter = 0; counter < ISL38XX_CB_RX_QSIZE; counter++) { cb->rx_data_low[counter].address = cpu_to_le32((u32) priv->pci_map_rx_address[counter]); } /* since the receive queues are filled with empty fragments, now we can * set the corresponding indexes in the Control Block */ priv->control_block->driver_curr_frag[ISL38XX_CB_RX_DATA_LQ] = cpu_to_le32(ISL38XX_CB_RX_QSIZE); priv->control_block->driver_curr_frag[ISL38XX_CB_RX_MGMTQ] = cpu_to_le32(ISL38XX_CB_MGMT_QSIZE); /* reset the remaining real index registers and full flags */ priv->free_data_rx = 0; priv->free_data_tx = 0; priv->data_low_tx_full = 0; if (reload_firmware) { /* Should we load the firmware ? */ /* now that the data structures are cleaned up, upload * firmware and reset interface */ rc = islpci_upload_fw(priv); if (rc) { printk(KERN_ERR "%s: islpci_reset: failure\n", priv->ndev->name); return rc; } } /* finally reset interface */ rc = islpci_reset_if(priv); if (rc) printk(KERN_ERR "prism54: Your card/socket may be faulty, or IRQ line too busy :(\n"); return rc; } /****************************************************************************** Network device configuration functions ******************************************************************************/ static int islpci_alloc_memory(islpci_private *priv) { int counter; #if VERBOSE > SHOW_ERROR_MESSAGES printk(KERN_DEBUG "islpci_alloc_memory\n"); #endif /* remap the PCI device base address to accessible */ if (!(priv->device_base = ioremap(pci_resource_start(priv->pdev, 0), ISL38XX_PCI_MEM_SIZE))) { /* error in remapping the PCI device memory address range */ printk(KERN_ERR "PCI memory remapping failed\n"); return -1; } /* memory layout for consistent DMA region: * * Area 1: Control Block for the device interface * Area 2: Power Save Mode Buffer for temporary frame storage. Be aware that * the number of supported stations in the AP determines the minimal * size of the buffer ! */ /* perform the allocation */ priv->driver_mem_address = dma_alloc_coherent(&priv->pdev->dev, HOST_MEM_BLOCK, &priv->device_host_address, GFP_KERNEL); if (!priv->driver_mem_address) { /* error allocating the block of PCI memory */ printk(KERN_ERR "%s: could not allocate DMA memory, aborting!", "prism54"); return -1; } /* assign the Control Block to the first address of the allocated area */ priv->control_block = (isl38xx_control_block *) priv->driver_mem_address; /* set the Power Save Buffer pointer directly behind the CB */ priv->device_psm_buffer = priv->device_host_address + CONTROL_BLOCK_SIZE; /* make sure all buffer pointers are initialized */ for (counter = 0; counter < ISL38XX_CB_QCOUNT; counter++) { priv->control_block->driver_curr_frag[counter] = cpu_to_le32(0); priv->control_block->device_curr_frag[counter] = cpu_to_le32(0); } priv->index_mgmt_rx = 0; memset(priv->mgmt_rx, 0, sizeof(priv->mgmt_rx)); memset(priv->mgmt_tx, 0, sizeof(priv->mgmt_tx)); /* allocate rx queue for management frames */ if (islpci_mgmt_rx_fill(priv->ndev) < 0) goto out_free; /* now get the data rx skb's */ memset(priv->data_low_rx, 0, sizeof (priv->data_low_rx)); memset(priv->pci_map_rx_address, 0, sizeof (priv->pci_map_rx_address)); for (counter = 0; counter < ISL38XX_CB_RX_QSIZE; counter++) { struct sk_buff *skb; /* allocate an sk_buff for received data frames storage * each frame on receive size consists of 1 fragment * include any required allignment operations */ if (!(skb = dev_alloc_skb(MAX_FRAGMENT_SIZE_RX + 2))) { /* error allocating an sk_buff structure elements */ printk(KERN_ERR "Error allocating skb.\n"); skb = NULL; goto out_free; } skb_reserve(skb, (4 - (long) skb->data) & 0x03); /* add the new allocated sk_buff to the buffer array */ priv->data_low_rx[counter] = skb; /* map the allocated skb data area to pci */ priv->pci_map_rx_address[counter] = dma_map_single(&priv->pdev->dev, (void *)skb->data, MAX_FRAGMENT_SIZE_RX + 2, DMA_FROM_DEVICE); if (dma_mapping_error(&priv->pdev->dev, priv->pci_map_rx_address[counter])) { priv->pci_map_rx_address[counter] = 0; /* error mapping the buffer to device accessible memory address */ printk(KERN_ERR "failed to map skb DMA'able\n"); goto out_free; } } prism54_acl_init(&priv->acl); prism54_wpa_bss_ie_init(priv); if (mgt_init(priv)) goto out_free; return 0; out_free: islpci_free_memory(priv); return -1; } int islpci_free_memory(islpci_private *priv) { int counter; if (priv->device_base) iounmap(priv->device_base); priv->device_base = NULL; /* free consistent DMA area... */ if (priv->driver_mem_address) dma_free_coherent(&priv->pdev->dev, HOST_MEM_BLOCK, priv->driver_mem_address, priv->device_host_address); /* clear some dangling pointers */ priv->driver_mem_address = NULL; priv->device_host_address = 0; priv->device_psm_buffer = 0; priv->control_block = NULL; /* clean up mgmt rx buffers */ for (counter = 0; counter < ISL38XX_CB_MGMT_QSIZE; counter++) { struct islpci_membuf *buf = &priv->mgmt_rx[counter]; if (buf->pci_addr) dma_unmap_single(&priv->pdev->dev, buf->pci_addr, buf->size, DMA_FROM_DEVICE); buf->pci_addr = 0; kfree(buf->mem); buf->size = 0; buf->mem = NULL; } /* clean up data rx buffers */ for (counter = 0; counter < ISL38XX_CB_RX_QSIZE; counter++) { if (priv->pci_map_rx_address[counter]) dma_unmap_single(&priv->pdev->dev, priv->pci_map_rx_address[counter], MAX_FRAGMENT_SIZE_RX + 2, DMA_FROM_DEVICE); priv->pci_map_rx_address[counter] = 0; if (priv->data_low_rx[counter]) dev_kfree_skb(priv->data_low_rx[counter]); priv->data_low_rx[counter] = NULL; } /* Free the access control list and the WPA list */ prism54_acl_clean(&priv->acl); prism54_wpa_bss_ie_clean(priv); mgt_clean(priv); return 0; } #if 0 static void islpci_set_multicast_list(struct net_device *dev) { /* put device into promisc mode and let network layer handle it */ } #endif static void islpci_ethtool_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); strlcpy(info->version, DRV_VERSION, sizeof(info->version)); } static const struct ethtool_ops islpci_ethtool_ops = { .get_drvinfo = islpci_ethtool_get_drvinfo, }; static const struct net_device_ops islpci_netdev_ops = { .ndo_open = islpci_open, .ndo_stop = islpci_close, .ndo_start_xmit = islpci_eth_transmit, .ndo_tx_timeout = islpci_eth_tx_timeout, .ndo_set_mac_address = prism54_set_mac_address, .ndo_validate_addr = eth_validate_addr, }; static struct device_type wlan_type = { .name = "wlan", }; struct net_device * islpci_setup(struct pci_dev *pdev) { islpci_private *priv; struct net_device *ndev = alloc_etherdev(sizeof (islpci_private)); if (!ndev) return ndev; pci_set_drvdata(pdev, ndev); SET_NETDEV_DEV(ndev, &pdev->dev); SET_NETDEV_DEVTYPE(ndev, &wlan_type); /* setup the structure members */ ndev->base_addr = pci_resource_start(pdev, 0); ndev->irq = pdev->irq; /* initialize the function pointers */ ndev->netdev_ops = &islpci_netdev_ops; ndev->wireless_handlers = &prism54_handler_def; ndev->ethtool_ops = &islpci_ethtool_ops; /* ndev->set_multicast_list = &islpci_set_multicast_list; */ ndev->addr_len = ETH_ALEN; /* Get a non-zero dummy MAC address for nameif. Jean II */ memcpy(ndev->dev_addr, dummy_mac, ETH_ALEN); ndev->watchdog_timeo = ISLPCI_TX_TIMEOUT; /* allocate a private device structure to the network device */ priv = netdev_priv(ndev); priv->ndev = ndev; priv->pdev = pdev; priv->monitor_type = ARPHRD_IEEE80211; priv->ndev->type = (priv->iw_mode == IW_MODE_MONITOR) ? priv->monitor_type : ARPHRD_ETHER; /* Add pointers to enable iwspy support. */ priv->wireless_data.spy_data = &priv->spy_data; ndev->wireless_data = &priv->wireless_data; /* save the start and end address of the PCI memory area */ ndev->mem_start = (unsigned long) priv->device_base; ndev->mem_end = ndev->mem_start + ISL38XX_PCI_MEM_SIZE; #if VERBOSE > SHOW_ERROR_MESSAGES DEBUG(SHOW_TRACING, "PCI Memory remapped to 0x%p\n", priv->device_base); #endif init_waitqueue_head(&priv->reset_done); /* init the queue read locks, process wait counter */ mutex_init(&priv->mgmt_lock); priv->mgmt_received = NULL; init_waitqueue_head(&priv->mgmt_wqueue); mutex_init(&priv->stats_lock); spin_lock_init(&priv->slock); /* init state machine with off#1 state */ priv->state = PRV_STATE_OFF; priv->state_off = 1; /* initialize workqueue's */ INIT_WORK(&priv->stats_work, prism54_update_stats); priv->stats_timestamp = 0; INIT_WORK(&priv->reset_task, islpci_do_reset_and_wake); priv->reset_task_pending = 0; /* allocate various memory areas */ if (islpci_alloc_memory(priv)) goto do_free_netdev; /* select the firmware file depending on the device id */ switch (pdev->device) { case 0x3877: strcpy(priv->firmware, ISL3877_IMAGE_FILE); break; case 0x3886: strcpy(priv->firmware, ISL3886_IMAGE_FILE); break; default: strcpy(priv->firmware, ISL3890_IMAGE_FILE); break; } if (register_netdev(ndev)) { DEBUG(SHOW_ERROR_MESSAGES, "ERROR: register_netdev() failed\n"); goto do_islpci_free_memory; } return ndev; do_islpci_free_memory: islpci_free_memory(priv); do_free_netdev: free_netdev(ndev); priv = NULL; return NULL; } islpci_state_t islpci_set_state(islpci_private *priv, islpci_state_t new_state) { islpci_state_t old_state; /* lock */ old_state = priv->state; /* this means either a race condition or some serious error in * the driver code */ switch (new_state) { case PRV_STATE_OFF: priv->state_off++; fallthrough; default: priv->state = new_state; break; case PRV_STATE_PREBOOT: /* there are actually many off-states, enumerated by * state_off */ if (old_state == PRV_STATE_OFF) priv->state_off--; /* only if hw_unavailable is zero now it means we either * were in off#1 state, or came here from * somewhere else */ if (!priv->state_off) priv->state = new_state; break; } #if 0 printk(KERN_DEBUG "%s: state transition %d -> %d (off#%d)\n", priv->ndev->name, old_state, new_state, priv->state_off); #endif /* invariants */ BUG_ON(priv->state_off < 0); BUG_ON(priv->state_off && (priv->state != PRV_STATE_OFF)); BUG_ON(!priv->state_off && (priv->state == PRV_STATE_OFF)); /* unlock */ return old_state; }