[P54]: add mac80211-based driver for prism54 softmac hardware
Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/p54usb.c b/drivers/net/wireless/p54usb.c
new file mode 100644
index 0000000..7446c39c
--- /dev/null
+++ b/drivers/net/wireless/p54usb.c
@@ -0,0 +1,906 @@
+
+/*
+ * Linux device driver for USB based Prism54
+ *
+ * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
+ *
+ * Based on the islsm (softmac prism54) driver, which is:
+ * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/usb.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/crc32.h>
+#include <net/mac80211.h>
+
+#include "p54.h"
+#include "p54usb.h"
+
+MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
+MODULE_DESCRIPTION("Prism54 USB wireless driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("prism54usb");
+
+static struct usb_device_id p54u_table[] __devinitdata = {
+ /* Version 1 devices (pci chip + net2280) */
+ {USB_DEVICE(0x0506, 0x0a11)}, /* 3COM 3CRWE254G72 */
+ {USB_DEVICE(0x0707, 0xee06)}, /* SMC 2862W-G */
+ {USB_DEVICE(0x083a, 0x4501)}, /* Accton 802.11g WN4501 USB */
+ {USB_DEVICE(0x083a, 0x4502)}, /* Siemens Gigaset USB Adapter */
+ {USB_DEVICE(0x0846, 0x4200)}, /* Netgear WG121 */
+ {USB_DEVICE(0x0846, 0x4210)}, /* Netgear WG121 the second ? */
+ {USB_DEVICE(0x0846, 0x4220)}, /* Netgear WG111 */
+ {USB_DEVICE(0x0cde, 0x0006)}, /* Medion 40900, Roper Europe */
+ {USB_DEVICE(0x124a, 0x4023)}, /* Shuttle PN15, Airvast WM168g, IOGear GWU513 */
+ {USB_DEVICE(0x1915, 0x2234)}, /* Linksys WUSB54G OEM */
+ {USB_DEVICE(0x1915, 0x2235)}, /* Linksys WUSB54G Portable OEM */
+ {USB_DEVICE(0x2001, 0x3701)}, /* DLink DWL-G120 Spinnaker */
+ {USB_DEVICE(0x2001, 0x3703)}, /* DLink DWL-G122 */
+ {USB_DEVICE(0x5041, 0x2234)}, /* Linksys WUSB54G */
+ {USB_DEVICE(0x5041, 0x2235)}, /* Linksys WUSB54G Portable */
+
+ /* Version 2 devices (3887) */
+ {USB_DEVICE(0x050d, 0x7050)}, /* Belkin F5D7050 ver 1000 */
+ {USB_DEVICE(0x0572, 0x2000)}, /* Cohiba Proto board */
+ {USB_DEVICE(0x0572, 0x2002)}, /* Cohiba Proto board */
+ {USB_DEVICE(0x0707, 0xee13)}, /* SMC 2862W-G version 2 */
+ {USB_DEVICE(0x083a, 0x4521)}, /* Siemens Gigaset USB Adapter 54 version 2 */
+ {USB_DEVICE(0x0846, 0x4240)}, /* Netgear WG111 (v2) */
+ {USB_DEVICE(0x0915, 0x2000)}, /* Cohiba Proto board */
+ {USB_DEVICE(0x0915, 0x2002)}, /* Cohiba Proto board */
+ {USB_DEVICE(0x0baf, 0x0118)}, /* U.S. Robotics U5 802.11g Adapter*/
+ {USB_DEVICE(0x0bf8, 0x1009)}, /* FUJITSU E-5400 USB D1700*/
+ {USB_DEVICE(0x0cde, 0x0006)}, /* Medion MD40900 */
+ {USB_DEVICE(0x0cde, 0x0008)}, /* Sagem XG703A */
+ {USB_DEVICE(0x0d8e, 0x3762)}, /* DLink DWL-G120 Cohiba */
+ {USB_DEVICE(0x09aa, 0x1000)}, /* Spinnaker Proto board */
+ {USB_DEVICE(0x1435, 0x0427)}, /* Inventel UR054G */
+ {USB_DEVICE(0x2001, 0x3704)}, /* DLink DWL-G122 rev A2 */
+ {USB_DEVICE(0x413c, 0x8102)}, /* Spinnaker DUT */
+ {USB_DEVICE(0x413c, 0x8104)}, /* Cohiba Proto board */
+ {}
+};
+
+MODULE_DEVICE_TABLE(usb, p54u_table);
+
+static void p54u_rx_cb(struct urb *urb)
+{
+ struct sk_buff *skb = (struct sk_buff *) urb->context;
+ struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
+ struct ieee80211_hw *dev = info->dev;
+ struct p54u_priv *priv = dev->priv;
+
+ if (unlikely(urb->status)) {
+ info->urb = NULL;
+ usb_free_urb(urb);
+ return;
+ }
+
+ skb_unlink(skb, &priv->rx_queue);
+ skb_put(skb, urb->actual_length);
+ if (!priv->hw_type)
+ skb_pull(skb, sizeof(struct net2280_tx_hdr));
+
+ if (p54_rx(dev, skb)) {
+ skb = dev_alloc_skb(MAX_RX_SIZE);
+ if (unlikely(!skb)) {
+ usb_free_urb(urb);
+ /* TODO check rx queue length and refill *somewhere* */
+ return;
+ }
+
+ info = (struct p54u_rx_info *) skb->cb;
+ info->urb = urb;
+ info->dev = dev;
+ urb->transfer_buffer = skb_tail_pointer(skb);
+ urb->context = skb;
+ skb_queue_tail(&priv->rx_queue, skb);
+ } else {
+ skb_trim(skb, 0);
+ skb_queue_tail(&priv->rx_queue, skb);
+ }
+
+ usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+static void p54u_tx_cb(struct urb *urb)
+{
+ usb_free_urb(urb);
+}
+
+static void p54u_tx_free_cb(struct urb *urb)
+{
+ kfree(urb->transfer_buffer);
+ usb_free_urb(urb);
+}
+
+static int p54u_init_urbs(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ struct urb *entry;
+ struct sk_buff *skb;
+ struct p54u_rx_info *info;
+
+ while (skb_queue_len(&priv->rx_queue) < 32) {
+ skb = __dev_alloc_skb(MAX_RX_SIZE, GFP_KERNEL);
+ if (!skb)
+ break;
+ entry = usb_alloc_urb(0, GFP_KERNEL);
+ if (!entry) {
+ kfree_skb(skb);
+ break;
+ }
+ usb_fill_bulk_urb(entry, priv->udev, usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), skb_tail_pointer(skb), MAX_RX_SIZE, p54u_rx_cb, skb);
+ info = (struct p54u_rx_info *) skb->cb;
+ info->urb = entry;
+ info->dev = dev;
+ skb_queue_tail(&priv->rx_queue, skb);
+ usb_submit_urb(entry, GFP_KERNEL);
+ }
+
+ return 0;
+}
+
+static void p54u_free_urbs(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ struct p54u_rx_info *info;
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&priv->rx_queue))) {
+ info = (struct p54u_rx_info *) skb->cb;
+ if (!info->urb)
+ continue;
+
+ usb_kill_urb(info->urb);
+ kfree_skb(skb);
+ }
+}
+
+static void p54u_tx_3887(struct ieee80211_hw *dev, struct p54_control_hdr *data,
+ size_t len, int free_on_tx)
+{
+ struct p54u_priv *priv = dev->priv;
+ struct urb *addr_urb, *data_urb;
+
+ addr_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!addr_urb)
+ return;
+
+ data_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!data_urb) {
+ usb_free_urb(addr_urb);
+ return;
+ }
+
+ usb_fill_bulk_urb(addr_urb, priv->udev,
+ usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), &data->req_id,
+ sizeof(data->req_id), p54u_tx_cb, dev);
+ usb_fill_bulk_urb(data_urb, priv->udev,
+ usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), data, len,
+ free_on_tx ? p54u_tx_free_cb : p54u_tx_cb, dev);
+
+ usb_submit_urb(addr_urb, GFP_ATOMIC);
+ usb_submit_urb(data_urb, GFP_ATOMIC);
+}
+
+static void p54u_tx_net2280(struct ieee80211_hw *dev, struct p54_control_hdr *data,
+ size_t len, int free_on_tx)
+{
+ struct p54u_priv *priv = dev->priv;
+ struct urb *int_urb, *data_urb;
+ struct net2280_tx_hdr *hdr;
+ struct net2280_reg_write *reg;
+
+ reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
+ if (!reg)
+ return;
+
+ int_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!int_urb) {
+ kfree(reg);
+ return;
+ }
+
+ data_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!data_urb) {
+ kfree(reg);
+ usb_free_urb(int_urb);
+ return;
+ }
+
+ reg->port = cpu_to_le16(NET2280_DEV_U32);
+ reg->addr = cpu_to_le32(P54U_DEV_BASE);
+ reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
+
+ len += sizeof(*data);
+ hdr = (void *)data - sizeof(*hdr);
+ memset(hdr, 0, sizeof(*hdr));
+ hdr->device_addr = data->req_id;
+ hdr->len = cpu_to_le16(len);
+
+ usb_fill_bulk_urb(int_urb, priv->udev,
+ usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
+ p54u_tx_free_cb, dev);
+ usb_submit_urb(int_urb, GFP_ATOMIC);
+
+ usb_fill_bulk_urb(data_urb, priv->udev,
+ usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), hdr, len + sizeof(*hdr),
+ free_on_tx ? p54u_tx_free_cb : p54u_tx_cb, dev);
+ usb_submit_urb(data_urb, GFP_ATOMIC);
+}
+
+static int p54u_write(struct p54u_priv *priv,
+ struct net2280_reg_write *buf,
+ enum net2280_op_type type,
+ __le32 addr, __le32 val)
+{
+ unsigned int ep;
+ int alen;
+
+ if (type & 0x0800)
+ ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
+ else
+ ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
+
+ buf->port = cpu_to_le16(type);
+ buf->addr = addr;
+ buf->val = val;
+
+ return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
+}
+
+static int p54u_read(struct p54u_priv *priv, void *buf,
+ enum net2280_op_type type,
+ __le32 addr, __le32 *val)
+{
+ struct net2280_reg_read *read = buf;
+ __le32 *reg = buf;
+ unsigned int ep;
+ int alen, err;
+
+ if (type & 0x0800)
+ ep = P54U_PIPE_DEV;
+ else
+ ep = P54U_PIPE_BRG;
+
+ read->port = cpu_to_le16(type);
+ read->addr = addr;
+
+ err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
+ read, sizeof(*read), &alen, 1000);
+ if (err)
+ return err;
+
+ err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
+ reg, sizeof(*reg), &alen, 1000);
+ if (err)
+ return err;
+
+ *val = *reg;
+ return 0;
+}
+
+static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
+ void *data, size_t len)
+{
+ int alen;
+ return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
+ data, len, &alen, 2000);
+}
+
+static int p54u_read_eeprom(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ void *buf;
+ struct p54_control_hdr *hdr;
+ int err, alen;
+ size_t offset = priv->hw_type ? 0x10 : 0x20;
+
+ buf = kmalloc(0x2020, GFP_KERNEL);
+ if (!buf) {
+ printk(KERN_ERR "prism54usb: cannot allocate memory for"
+ "eeprom readback!\n");
+ return -ENOMEM;
+ }
+
+ if (priv->hw_type) {
+ *((u32 *) buf) = priv->common.rx_start;
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
+ if (err) {
+ printk(KERN_ERR "prism54usb: addr send failed\n");
+ goto fail;
+ }
+ } else {
+ struct net2280_reg_write *reg = buf;
+ reg->port = cpu_to_le16(NET2280_DEV_U32);
+ reg->addr = cpu_to_le32(P54U_DEV_BASE);
+ reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
+ err = p54u_bulk_msg(priv, P54U_PIPE_DEV, buf, sizeof(*reg));
+ if (err) {
+ printk(KERN_ERR "prism54usb: dev_int send failed\n");
+ goto fail;
+ }
+ }
+
+ hdr = buf + priv->common.tx_hdr_len;
+ p54_fill_eeprom_readback(hdr);
+ hdr->req_id = cpu_to_le32(priv->common.rx_start);
+ if (priv->common.tx_hdr_len) {
+ struct net2280_tx_hdr *tx_hdr = buf;
+ tx_hdr->device_addr = hdr->req_id;
+ tx_hdr->len = cpu_to_le16(EEPROM_READBACK_LEN);
+ }
+
+ /* we can just pretend to send 0x2000 bytes of nothing in the headers */
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf,
+ EEPROM_READBACK_LEN + priv->common.tx_hdr_len);
+ if (err) {
+ printk(KERN_ERR "prism54usb: eeprom req send failed\n");
+ goto fail;
+ }
+
+ err = usb_bulk_msg(priv->udev,
+ usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
+ buf, 0x2020, &alen, 1000);
+ if (!err && alen > offset) {
+ p54_parse_eeprom(dev, (u8 *)buf + offset, alen - offset);
+ } else {
+ printk(KERN_ERR "prism54usb: eeprom read failed!\n");
+ err = -EINVAL;
+ goto fail;
+ }
+
+ fail:
+ kfree(buf);
+ return err;
+}
+
+static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
+{
+ static char start_string[] = "~~~~<\r";
+ struct p54u_priv *priv = dev->priv;
+ const struct firmware *fw_entry = NULL;
+ int err, alen;
+ u8 carry = 0;
+ u8 *buf, *tmp, *data;
+ unsigned int left, remains, block_size;
+ struct x2_header *hdr;
+ unsigned long timeout;
+
+ tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
+ if (!buf) {
+ printk(KERN_ERR "p54usb: cannot allocate firmware upload buffer!\n");
+ err = -ENOMEM;
+ goto err_bufalloc;
+ }
+
+ memcpy(buf, start_string, 4);
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 4);
+ if (err) {
+ printk(KERN_ERR "p54usb: reset failed! (%d)\n", err);
+ goto err_reset;
+ }
+
+ err = request_firmware(&fw_entry, "isl3887usb_bare", &priv->udev->dev);
+ if (err) {
+ printk(KERN_ERR "p54usb: cannot find firmware (isl3887usb_bare)!\n");
+ goto err_req_fw_failed;
+ }
+
+ p54_parse_firmware(dev, fw_entry);
+
+ left = block_size = min((size_t)P54U_FW_BLOCK, fw_entry->size);
+ strcpy(buf, start_string);
+ left -= strlen(start_string);
+ tmp += strlen(start_string);
+
+ data = fw_entry->data;
+ remains = fw_entry->size;
+
+ hdr = (struct x2_header *)(buf + strlen(start_string));
+ memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
+ hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
+ hdr->fw_length = cpu_to_le32(fw_entry->size);
+ hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
+ sizeof(u32)*2));
+ left -= sizeof(*hdr);
+ tmp += sizeof(*hdr);
+
+ while (remains) {
+ while (left--) {
+ if (carry) {
+ *tmp++ = carry;
+ carry = 0;
+ remains--;
+ continue;
+ }
+ switch (*data) {
+ case '~':
+ *tmp++ = '}';
+ carry = '^';
+ break;
+ case '}':
+ *tmp++ = '}';
+ carry = ']';
+ break;
+ default:
+ *tmp++ = *data;
+ remains--;
+ break;
+ }
+ data++;
+ }
+
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
+ if (err) {
+ printk(KERN_ERR "prism54usb: firmware upload failed!\n");
+ goto err_upload_failed;
+ }
+
+ tmp = buf;
+ left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
+ }
+
+ *((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, fw_entry->data, fw_entry->size));
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
+ if (err) {
+ printk(KERN_ERR "prism54usb: firmware upload failed!\n");
+ goto err_upload_failed;
+ }
+
+ timeout = jiffies + msecs_to_jiffies(1000);
+ while (!(err = usb_bulk_msg(priv->udev,
+ usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
+ if (alen > 2 && !memcmp(buf, "OK", 2))
+ break;
+
+ if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
+ printk(KERN_INFO "prism54usb: firmware upload failed!\n");
+ err = -EINVAL;
+ break;
+ }
+
+ if (time_after(jiffies, timeout)) {
+ printk(KERN_ERR "prism54usb: firmware boot timed out!\n");
+ err = -ETIMEDOUT;
+ break;
+ }
+ }
+ if (err)
+ goto err_upload_failed;
+
+ buf[0] = 'g';
+ buf[1] = '\r';
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
+ if (err) {
+ printk(KERN_ERR "prism54usb: firmware boot failed!\n");
+ goto err_upload_failed;
+ }
+
+ timeout = jiffies + msecs_to_jiffies(1000);
+ while (!(err = usb_bulk_msg(priv->udev,
+ usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
+ if (alen > 0 && buf[0] == 'g')
+ break;
+
+ if (time_after(jiffies, timeout)) {
+ err = -ETIMEDOUT;
+ break;
+ }
+ }
+ if (err)
+ goto err_upload_failed;
+
+ err_upload_failed:
+ release_firmware(fw_entry);
+ err_req_fw_failed:
+ err_reset:
+ kfree(buf);
+ err_bufalloc:
+ return err;
+}
+
+static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ const struct firmware *fw_entry = NULL;
+ const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
+ int err, alen;
+ void *buf;
+ __le32 reg;
+ unsigned int remains, offset;
+ u8 *data;
+
+ buf = kmalloc(512, GFP_KERNEL);
+ if (!buf) {
+ printk(KERN_ERR "p54usb: firmware buffer alloc failed!\n");
+ return -ENOMEM;
+ }
+
+ err = request_firmware(&fw_entry, "isl3890usb", &priv->udev->dev);
+ if (err) {
+ printk(KERN_ERR "p54usb: cannot find firmware (isl3890usb)!\n");
+ kfree(buf);
+ return err;
+ }
+
+ p54_parse_firmware(dev, fw_entry);
+
+#define P54U_WRITE(type, addr, data) \
+ do {\
+ err = p54u_write(priv, buf, type,\
+ cpu_to_le32((u32)(unsigned long)addr), data);\
+ if (err) \
+ goto fail;\
+ } while (0)
+
+#define P54U_READ(type, addr) \
+ do {\
+ err = p54u_read(priv, buf, type,\
+ cpu_to_le32((u32)(unsigned long)addr), ®);\
+ if (err)\
+ goto fail;\
+ } while (0)
+
+ /* power down net2280 bridge */
+ P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
+ reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
+ reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
+ P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
+
+ mdelay(100);
+
+ /* power up bridge */
+ reg |= cpu_to_le32(P54U_BRG_POWER_UP);
+ reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
+ P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
+
+ mdelay(100);
+
+ P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
+ cpu_to_le32(NET2280_CLK_30Mhz |
+ NET2280_PCI_ENABLE |
+ NET2280_PCI_SOFT_RESET));
+
+ mdelay(20);
+
+ P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
+ cpu_to_le32(PCI_COMMAND_MEMORY |
+ PCI_COMMAND_MASTER));
+
+ P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
+ cpu_to_le32(NET2280_BASE));
+
+ P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
+ reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
+ P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
+
+ // TODO: we really need this?
+ P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
+
+ P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
+ cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
+ P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
+ cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
+
+ P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
+ cpu_to_le32(NET2280_BASE2));
+
+ /* finally done setting up the bridge */
+
+ P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
+ cpu_to_le32(PCI_COMMAND_MEMORY |
+ PCI_COMMAND_MASTER));
+
+ P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 /* TRDY timeout */, 0);
+ P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
+ cpu_to_le32(P54U_DEV_BASE));
+
+ P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
+ P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
+ cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
+
+ /* do romboot */
+ P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
+
+ P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
+ reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+ reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
+ reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+ mdelay(20);
+
+ reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+ mdelay(20);
+
+ reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+ mdelay(100);
+
+ P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
+
+ /* finally, we can upload firmware now! */
+ remains = fw_entry->size;
+ data = fw_entry->data;
+ offset = ISL38XX_DEV_FIRMWARE_ADDR;
+
+ while (remains) {
+ unsigned int block_len = min(remains, (unsigned int)512);
+ memcpy(buf, data, block_len);
+
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
+ if (err) {
+ printk(KERN_ERR "prism54usb: firmware block upload "
+ "failed\n");
+ goto fail;
+ }
+
+ P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
+ cpu_to_le32(0xc0000f00));
+
+ P54U_WRITE(NET2280_DEV_U32,
+ 0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
+ P54U_WRITE(NET2280_DEV_U32,
+ 0x0020 | (unsigned long)&devreg->direct_mem_win,
+ cpu_to_le32(1));
+
+ P54U_WRITE(NET2280_DEV_U32,
+ 0x0024 | (unsigned long)&devreg->direct_mem_win,
+ cpu_to_le32(block_len));
+ P54U_WRITE(NET2280_DEV_U32,
+ 0x0028 | (unsigned long)&devreg->direct_mem_win,
+ cpu_to_le32(offset));
+
+ P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
+ cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
+ P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
+ cpu_to_le32(block_len >> 2));
+ P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
+ cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
+
+ mdelay(10);
+
+ P54U_READ(NET2280_DEV_U32,
+ 0x002C | (unsigned long)&devreg->direct_mem_win);
+ if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
+ !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
+ printk(KERN_ERR "prism54usb: firmware DMA transfer "
+ "failed\n");
+ goto fail;
+ }
+
+ P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
+ cpu_to_le32(NET2280_FIFO_FLUSH));
+
+ remains -= block_len;
+ data += block_len;
+ offset += block_len;
+ }
+
+ /* do ramboot */
+ P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
+ reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+ reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
+ reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+ mdelay(20);
+
+ reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+ reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
+
+ mdelay(100);
+
+ P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
+
+ /* start up the firmware */
+ P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
+ cpu_to_le32(ISL38XX_INT_IDENT_INIT));
+
+ P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
+ cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
+
+ P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
+ cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
+ NET2280_USB_INTERRUPT_ENABLE));
+
+ P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
+ cpu_to_le32(ISL38XX_DEV_INT_RESET));
+
+ err = usb_interrupt_msg(priv->udev,
+ usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
+ buf, sizeof(__le32), &alen, 1000);
+ if (err || alen != sizeof(__le32))
+ goto fail;
+
+ P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
+ P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
+
+ if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
+ err = -EINVAL;
+
+ P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
+ P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
+ cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
+
+#undef P54U_WRITE
+#undef P54U_READ
+
+ fail:
+ release_firmware(fw_entry);
+ kfree(buf);
+ return err;
+}
+
+static int p54u_open(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ int err;
+
+ err = p54u_init_urbs(dev);
+ if (err) {
+ return err;
+ }
+
+ priv->common.open = p54u_init_urbs;
+
+ return 0;
+}
+
+static void p54u_stop(struct ieee80211_hw *dev)
+{
+ /* TODO: figure out how to reliably stop the 3887 and net2280 so
+ the hardware is still usable next time we want to start it.
+ until then, we just stop listening to the hardware.. */
+ p54u_free_urbs(dev);
+ return;
+}
+
+static int __devinit p54u_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct ieee80211_hw *dev;
+ struct p54u_priv *priv;
+ int err;
+ unsigned int i, recognized_pipes;
+ DECLARE_MAC_BUF(mac);
+
+ dev = p54_init_common(sizeof(*priv));
+ if (!dev) {
+ printk(KERN_ERR "prism54usb: ieee80211 alloc failed\n");
+ return -ENOMEM;
+ }
+
+ priv = dev->priv;
+
+ SET_IEEE80211_DEV(dev, &intf->dev);
+ usb_set_intfdata(intf, dev);
+ priv->udev = udev;
+
+ usb_get_dev(udev);
+
+ /* really lazy and simple way of figuring out if we're a 3887 */
+ /* TODO: should just stick the identification in the device table */
+ i = intf->altsetting->desc.bNumEndpoints;
+ recognized_pipes = 0;
+ while (i--) {
+ switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
+ case P54U_PIPE_DATA:
+ case P54U_PIPE_MGMT:
+ case P54U_PIPE_BRG:
+ case P54U_PIPE_DEV:
+ case P54U_PIPE_DATA | USB_DIR_IN:
+ case P54U_PIPE_MGMT | USB_DIR_IN:
+ case P54U_PIPE_BRG | USB_DIR_IN:
+ case P54U_PIPE_DEV | USB_DIR_IN:
+ case P54U_PIPE_INT | USB_DIR_IN:
+ recognized_pipes++;
+ }
+ }
+ priv->common.open = p54u_open;
+
+ if (recognized_pipes < P54U_PIPE_NUMBER) {
+ priv->hw_type = P54U_3887;
+ priv->common.tx = p54u_tx_3887;
+ } else {
+ dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
+ priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
+ priv->common.tx = p54u_tx_net2280;
+ }
+ priv->common.stop = p54u_stop;
+
+ if (priv->hw_type)
+ err = p54u_upload_firmware_3887(dev);
+ else
+ err = p54u_upload_firmware_net2280(dev);
+ if (err)
+ goto err_free_dev;
+
+ err = p54u_read_eeprom(dev);
+ if (err)
+ goto err_free_dev;
+
+ if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
+ u8 perm_addr[ETH_ALEN];
+
+ printk(KERN_WARNING "prism54usb: Invalid hwaddr! Using randomly generated MAC addr\n");
+ random_ether_addr(perm_addr);
+ SET_IEEE80211_PERM_ADDR(dev, perm_addr);
+ }
+
+ skb_queue_head_init(&priv->rx_queue);
+
+ err = ieee80211_register_hw(dev);
+ if (err) {
+ printk(KERN_ERR "prism54usb: Cannot register netdevice\n");
+ goto err_free_dev;
+ }
+
+ printk(KERN_INFO "%s: hwaddr %s, isl38%02x\n",
+ wiphy_name(dev->wiphy),
+ print_mac(mac, dev->wiphy->perm_addr),
+ priv->common.version);
+
+ return 0;
+
+ err_free_dev:
+ ieee80211_free_hw(dev);
+ usb_set_intfdata(intf, NULL);
+ usb_put_dev(udev);
+ return err;
+}
+
+static void __devexit p54u_disconnect(struct usb_interface *intf)
+{
+ struct ieee80211_hw *dev = usb_get_intfdata(intf);
+ struct p54u_priv *priv;
+
+ if (!dev)
+ return;
+
+ ieee80211_unregister_hw(dev);
+
+ priv = dev->priv;
+ usb_put_dev(interface_to_usbdev(intf));
+ p54_free_common(dev);
+ ieee80211_free_hw(dev);
+}
+
+static struct usb_driver p54u_driver = {
+ .name = "prism54usb",
+ .id_table = p54u_table,
+ .probe = p54u_probe,
+ .disconnect = p54u_disconnect,
+};
+
+static int __init p54u_init(void)
+{
+ return usb_register(&p54u_driver);
+}
+
+static void __exit p54u_exit(void)
+{
+ usb_deregister(&p54u_driver);
+}
+
+module_init(p54u_init);
+module_exit(p54u_exit);