Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 956 insertions, 0 deletions

diff --git a/drivers/net/wireless/prism54/islpci_dev.c b/drivers/net/wireless/prism54/islpci_dev.c
new file mode 100644
index 000000000000..efab07e9e24e
--- /dev/null
+++ b/drivers/net/wireless/prism54/islpci_dev.c
@@ -0,0 +1,956 @@
+/*
+ *  
+ *  Copyright (C) 2002 Intersil Americas Inc.
+ *  Copyright (C) 2003 Herbert Valerio Riedel <hvr@gnu.org>
+ *  Copyright (C) 2003 Luis R. Rodriguez <mcgrof@ruslug.rutgers.edu>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/if_arp.h>
+
+#include <asm/io.h>
+
+#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"
+
+static int prism54_bring_down(islpci_private *);
+static int islpci_alloc_memory(islpci_private *);
+static struct net_device_stats *islpci_statistics(struct net_device *);
+
+/* 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 cards base address for writting 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, struct pt_regs *regs)
+{
+        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);
+/*      netif_mark_up( 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 */
+        set_current_state(TASK_UNINTERRUPTIBLE);
+        schedule_timeout(50*HZ/1000);
+
+        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. */
+        
+                set_current_state(TASK_UNINTERRUPTIBLE);
+                remaining = schedule_timeout(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;
+}
+
+static struct net_device_stats *
+islpci_statistics(struct net_device *ndev)
+{
+        islpci_private *priv = netdev_priv(ndev);
+
+#if VERBOSE > SHOW_ERROR_MESSAGES
+        DEBUG(SHOW_FUNCTION_CALLS, "islpci_statistics\n");
+#endif
+
+        return &priv->statistics;
+}
+
+/******************************************************************************
+    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 accessable */
+        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 = pci_alloc_consistent(priv->pdev,
+                                                        HOST_MEM_BLOCK,
+                                                        &priv->
+                                                        device_host_address);
+
+        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] =
+                    pci_map_single(priv->pdev, (void *) skb->data,
+                                   MAX_FRAGMENT_SIZE_RX + 2,
+                                   PCI_DMA_FROMDEVICE);
+                if (!priv->pci_map_rx_address[counter]) {
+                        /* error mapping the buffer to device
+                           accessable memory address */
+                        printk(KERN_ERR "failed to map skb DMA'able\n");
+                        goto out_free;
+                }
+        }
+
+        prism54_acl_init(&priv->acl);
+        prism54_wpa_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)
+                pci_free_consistent(priv->pdev, 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)
+                        pci_unmap_single(priv->pdev, buf->pci_addr,
+                                         buf->size, PCI_DMA_FROMDEVICE);
+                buf->pci_addr = 0;
+                if (buf->mem)
+                        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])
+                        pci_unmap_single(priv->pdev,
+                                         priv->pci_map_rx_address[counter],
+                                         MAX_FRAGMENT_SIZE_RX + 2,
+                                         PCI_DMA_FROMDEVICE);
+                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 acces control list and the WPA list */
+        prism54_acl_clean(&priv->acl);
+        prism54_wpa_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
+
+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;
+
+        SET_MODULE_OWNER(ndev);
+        pci_set_drvdata(pdev, ndev);
+#if defined(SET_NETDEV_DEV)
+        SET_NETDEV_DEV(ndev, &pdev->dev);
+#endif
+
+        /* setup the structure members */
+        ndev->base_addr = pci_resource_start(pdev, 0);
+        ndev->irq = pdev->irq;
+
+        /* initialize the function pointers */
+        ndev->open = &islpci_open;
+        ndev->stop = &islpci_close;
+        ndev->get_stats = &islpci_statistics;
+        ndev->get_wireless_stats = &prism54_get_wireless_stats;
+        ndev->do_ioctl = &prism54_ioctl;
+        ndev->wireless_handlers =
+            (struct iw_handler_def *) &prism54_handler_def;
+
+        ndev->hard_start_xmit = &islpci_eth_transmit;
+        /* ndev->set_multicast_list = &islpci_set_multicast_list; */
+        ndev->addr_len = ETH_ALEN;
+        ndev->set_mac_address = &prism54_set_mac_address;
+        /* Get a non-zero dummy MAC address for nameif. Jean II */
+        memcpy(ndev->dev_addr, dummy_mac, 6);
+
+#ifdef HAVE_TX_TIMEOUT
+        ndev->watchdog_timeo = ISLPCI_TX_TIMEOUT;
+        ndev->tx_timeout = &islpci_eth_tx_timeout;
+#endif
+
+        /* 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;
+
+#if WIRELESS_EXT > 16
+        /* Add pointers to enable iwspy support. */
+        priv->wireless_data.spy_data = &priv->spy_data;
+        ndev->wireless_data = &priv->wireless_data;
+#endif /* WIRELESS_EXT > 16 */
+
+        /* 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 */
+        sema_init(&priv->mgmt_sem, 1);
+        priv->mgmt_received = NULL;
+        init_waitqueue_head(&priv->mgmt_wqueue);
+        sema_init(&priv->stats_sem, 1);
+        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,
+                  (void (*)(void *)) prism54_update_stats, priv);
+        priv->stats_timestamp = 0;
+
+        INIT_WORK(&priv->reset_task, islpci_do_reset_and_wake, priv);
+        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:
+        pci_set_drvdata(pdev, NULL);
+        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++;
+        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;
+}