--- /dev/null
+
+/*
+ * 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/usb.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/firmware.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/crc32.h>
+#include <linux/module.h>
+#include <net/mac80211.h>
+
+#include "p54.h"
+#include "lmac.h"
+#include "p54usb.h"
+
+MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
+MODULE_DESCRIPTION("Prism54 USB wireless driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("prism54usb");
+MODULE_FIRMWARE("isl3886usb");
+MODULE_FIRMWARE("isl3887usb");
+
+/*
+ * Note:
+ *
+ * Always update our wiki's device list (located at:
+ * http://wireless.kernel.org/en/users/Drivers/p54/devices ),
+ * whenever you add a new device.
+ */
+
+static struct usb_device_id p54u_table[] = {
+ /* Version 1 devices (pci chip + net2280) */
+ {USB_DEVICE(0x0411, 0x0050)}, /* Buffalo WLI2-USB2-G54 */
+ {USB_DEVICE(0x045e, 0x00c2)}, /* Microsoft MN-710 */
+ {USB_DEVICE(0x0506, 0x0a11)}, /* 3COM 3CRWE254G72 */
+ {USB_DEVICE(0x0675, 0x0530)}, /* DrayTek Vigor 530 */
+ {USB_DEVICE(0x06b9, 0x0120)}, /* Thomson SpeedTouch 120g */
+ {USB_DEVICE(0x0707, 0xee06)}, /* SMC 2862W-G */
+ {USB_DEVICE(0x07aa, 0x001c)}, /* Corega CG-WLUSB2GT */
+ {USB_DEVICE(0x083a, 0x4501)}, /* Accton 802.11g WN4501 USB */
+ {USB_DEVICE(0x083a, 0x4502)}, /* Siemens Gigaset USB Adapter */
+ {USB_DEVICE(0x083a, 0x5501)}, /* Phillips CPWUA054 */
+ {USB_DEVICE(0x0846, 0x4200)}, /* Netgear WG121 */
+ {USB_DEVICE(0x0846, 0x4210)}, /* Netgear WG121 the second ? */
+ {USB_DEVICE(0x0846, 0x4220)}, /* Netgear WG111 */
+ {USB_DEVICE(0x09aa, 0x1000)}, /* Spinnaker Proto board */
+ {USB_DEVICE(0x0bf8, 0x1007)}, /* Fujitsu E-5400 USB */
+ {USB_DEVICE(0x0cde, 0x0006)}, /* Medion 40900, Roper Europe */
+ {USB_DEVICE(0x0db0, 0x6826)}, /* MSI UB54G (MS-6826) */
+ {USB_DEVICE(0x107b, 0x55f2)}, /* Gateway WGU-210 (Gemtek) */
+ {USB_DEVICE(0x124a, 0x4023)}, /* Shuttle PN15, Airvast WM168g, IOGear GWU513 */
+ {USB_DEVICE(0x1435, 0x0210)}, /* Inventel UR054G */
+ {USB_DEVICE(0x15a9, 0x0002)}, /* Gemtek WUBI-100GW 802.11g */
+ {USB_DEVICE(0x1630, 0x0005)}, /* 2Wire 802.11g USB (v1) / Z-Com */
+ {USB_DEVICE(0x182d, 0x096b)}, /* Sitecom WL-107 */
+ {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(0x2001, 0x3762)}, /* Conceptronic C54U */
+ {USB_DEVICE(0x5041, 0x2234)}, /* Linksys WUSB54G */
+ {USB_DEVICE(0x5041, 0x2235)}, /* Linksys WUSB54G Portable */
+
+ /* Version 2 devices (3887) */
+ {USB_DEVICE(0x0471, 0x1230)}, /* Philips CPWUA054/00 */
+ {USB_DEVICE(0x050d, 0x7050)}, /* Belkin F5D7050 ver 1000 */
+ {USB_DEVICE(0x0572, 0x2000)}, /* Cohiba Proto board */
+ {USB_DEVICE(0x0572, 0x2002)}, /* Cohiba Proto board */
+ {USB_DEVICE(0x06a9, 0x000e)}, /* Westell 802.11g USB (A90-211WG-01) */
+ {USB_DEVICE(0x06b9, 0x0121)}, /* Thomson SpeedTouch 121g */
+ {USB_DEVICE(0x0707, 0xee13)}, /* SMC 2862W-G version 2 */
+ {USB_DEVICE(0x07aa, 0x0020)}, /* Corega WLUSB2GTST USB */
+ {USB_DEVICE(0x0803, 0x4310)}, /* Zoom 4410a */
+ {USB_DEVICE(0x083a, 0x4521)}, /* Siemens Gigaset USB Adapter 54 version 2 */
+ {USB_DEVICE(0x083a, 0x4531)}, /* T-Com Sinus 154 data II */
+ {USB_DEVICE(0x083a, 0xc501)}, /* Zoom Wireless-G 4410 */
+ {USB_DEVICE(0x083a, 0xf503)}, /* Accton FD7050E ver 1010ec */
+ {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 already listed above,
+ * just noting it here for clarity */
+ {USB_DEVICE(0x0cde, 0x0008)}, /* Sagem XG703A */
+ {USB_DEVICE(0x0cde, 0x0015)}, /* Zcomax XG-705A */
+ {USB_DEVICE(0x0d8e, 0x3762)}, /* DLink DWL-G120 Cohiba */
+ {USB_DEVICE(0x124a, 0x4025)}, /* IOGear GWU513 (GW3887IK chip) */
+ {USB_DEVICE(0x1260, 0xee22)}, /* SMC 2862W-G version 2 */
+ {USB_DEVICE(0x13b1, 0x000a)}, /* Linksys WUSB54G ver 2 */
+ {USB_DEVICE(0x13B1, 0x000C)}, /* Linksys WUSB54AG */
+ {USB_DEVICE(0x1413, 0x5400)}, /* Telsey 802.11g USB2.0 Adapter */
+ {USB_DEVICE(0x1435, 0x0427)}, /* Inventel UR054G */
+ /* {USB_DEVICE(0x15a9, 0x0002)}, * Also SparkLAN WL-682 with 3887 */
+ {USB_DEVICE(0x1668, 0x1050)}, /* Actiontec 802UIG-1 */
+ {USB_DEVICE(0x1740, 0x1000)}, /* Senao NUB-350 */
+ {USB_DEVICE(0x2001, 0x3704)}, /* DLink DWL-G122 rev A2 */
+ {USB_DEVICE(0x2001, 0x3705)}, /* D-Link DWL-G120 rev C1 */
+ {USB_DEVICE(0x413c, 0x5513)}, /* Dell WLA3310 USB Wireless Adapter */
+ {USB_DEVICE(0x413c, 0x8102)}, /* Spinnaker DUT */
+ {USB_DEVICE(0x413c, 0x8104)}, /* Cohiba Proto board */
+ {}
+};
+
+MODULE_DEVICE_TABLE(usb, p54u_table);
+
+static const struct {
+ u32 intf;
+ enum p54u_hw_type type;
+ const char *fw;
+ char hw[20];
+} p54u_fwlist[__NUM_P54U_HWTYPES] = {
+ {
+ .type = P54U_NET2280,
+ .intf = FW_LM86,
+ .fw = "isl3886usb",
+ .hw = "ISL3886 + net2280",
+ },
+ {
+ .type = P54U_3887,
+ .intf = FW_LM87,
+ .fw = "isl3887usb",
+ .hw = "ISL3887",
+ },
+};
+
+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;
+
+ skb_unlink(skb, &priv->rx_queue);
+
+ if (unlikely(urb->status)) {
+ dev_kfree_skb_irq(skb);
+ return;
+ }
+
+ skb_put(skb, urb->actual_length);
+
+ if (priv->hw_type == P54U_NET2280)
+ skb_pull(skb, priv->common.tx_hdr_len);
+ if (priv->common.fw_interface == FW_LM87) {
+ skb_pull(skb, 4);
+ skb_put(skb, 4);
+ }
+
+ if (p54_rx(dev, skb)) {
+ skb = dev_alloc_skb(priv->common.rx_mtu + 32);
+ if (unlikely(!skb)) {
+ /* 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;
+ } else {
+ if (priv->hw_type == P54U_NET2280)
+ skb_push(skb, priv->common.tx_hdr_len);
+ if (priv->common.fw_interface == FW_LM87) {
+ skb_push(skb, 4);
+ skb_put(skb, 4);
+ }
+ skb_reset_tail_pointer(skb);
+ skb_trim(skb, 0);
+ urb->transfer_buffer = skb_tail_pointer(skb);
+ }
+ skb_queue_tail(&priv->rx_queue, skb);
+ usb_anchor_urb(urb, &priv->submitted);
+ if (usb_submit_urb(urb, GFP_ATOMIC)) {
+ skb_unlink(skb, &priv->rx_queue);
+ usb_unanchor_urb(urb);
+ dev_kfree_skb_irq(skb);
+ }
+}
+
+static void p54u_tx_cb(struct urb *urb)
+{
+ struct sk_buff *skb = urb->context;
+ struct ieee80211_hw *dev =
+ usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
+
+ p54_free_skb(dev, skb);
+}
+
+static void p54u_tx_dummy_cb(struct urb *urb) { }
+
+static void p54u_free_urbs(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ usb_kill_anchored_urbs(&priv->submitted);
+}
+
+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);
+}
+
+static int p54u_init_urbs(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ struct urb *entry = NULL;
+ struct sk_buff *skb;
+ struct p54u_rx_info *info;
+ int ret = 0;
+
+ while (skb_queue_len(&priv->rx_queue) < 32) {
+ skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
+ if (!skb) {
+ ret = -ENOMEM;
+ goto err;
+ }
+ entry = usb_alloc_urb(0, GFP_KERNEL);
+ if (!entry) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ usb_fill_bulk_urb(entry, priv->udev,
+ usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
+ skb_tail_pointer(skb),
+ priv->common.rx_mtu + 32, 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_anchor_urb(entry, &priv->submitted);
+ ret = usb_submit_urb(entry, GFP_KERNEL);
+ if (ret) {
+ skb_unlink(skb, &priv->rx_queue);
+ usb_unanchor_urb(entry);
+ goto err;
+ }
+ usb_free_urb(entry);
+ entry = NULL;
+ }
+
+ return 0;
+
+ err:
+ usb_free_urb(entry);
+ kfree_skb(skb);
+ p54u_free_urbs(dev);
+ return ret;
+}
+
+static int p54u_open(struct ieee80211_hw *dev)
+{
+ /*
+ * TODO: Because we don't know how to reliably stop the 3887 and
+ * the isl3886+net2280, other than brutally cut off all
+ * communications. We have to reinitialize the urbs on every start.
+ */
+ return p54u_init_urbs(dev);
+}
+
+static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
+{
+ u32 chk = 0;
+
+ length >>= 2;
+ while (length--) {
+ chk ^= le32_to_cpu(*data++);
+ chk = (chk >> 5) ^ (chk << 3);
+ }
+
+ return cpu_to_le32(chk);
+}
+
+static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
+{
+ struct p54u_priv *priv = dev->priv;
+ struct urb *data_urb;
+ struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
+
+ data_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!data_urb) {
+ p54_free_skb(dev, skb);
+ return;
+ }
+
+ hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
+ hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
+
+ usb_fill_bulk_urb(data_urb, priv->udev,
+ usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
+ hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
+ p54u_tx_cb : p54u_tx_dummy_cb, skb);
+ data_urb->transfer_flags |= URB_ZERO_PACKET;
+
+ usb_anchor_urb(data_urb, &priv->submitted);
+ if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
+ usb_unanchor_urb(data_urb);
+ p54_free_skb(dev, skb);
+ }
+ usb_free_urb(data_urb);
+}
+
+static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
+{
+ struct p54u_priv *priv = dev->priv;
+ struct urb *int_urb = NULL, *data_urb = NULL;
+ struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
+ struct net2280_reg_write *reg = NULL;
+ int err = -ENOMEM;
+
+ reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
+ if (!reg)
+ goto out;
+
+ int_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!int_urb)
+ goto out;
+
+ data_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!data_urb)
+ goto out;
+
+ 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);
+
+ memset(hdr, 0, sizeof(*hdr));
+ hdr->len = cpu_to_le16(skb->len);
+ hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
+
+ usb_fill_bulk_urb(int_urb, priv->udev,
+ usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
+ p54u_tx_dummy_cb, dev);
+
+ /*
+ * URB_FREE_BUFFER triggers a code path in the USB subsystem that will
+ * free what is inside the transfer_buffer after the last reference to
+ * the int_urb is dropped.
+ */
+ int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
+ reg = NULL;
+
+ usb_fill_bulk_urb(data_urb, priv->udev,
+ usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
+ hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
+ p54u_tx_cb : p54u_tx_dummy_cb, skb);
+ data_urb->transfer_flags |= URB_ZERO_PACKET;
+
+ usb_anchor_urb(int_urb, &priv->submitted);
+ err = usb_submit_urb(int_urb, GFP_ATOMIC);
+ if (err) {
+ usb_unanchor_urb(int_urb);
+ goto out;
+ }
+
+ usb_anchor_urb(data_urb, &priv->submitted);
+ err = usb_submit_urb(data_urb, GFP_ATOMIC);
+ if (err) {
+ usb_unanchor_urb(data_urb);
+ goto out;
+ }
+out:
+ usb_free_urb(int_urb);
+ usb_free_urb(data_urb);
+
+ if (err) {
+ kfree(reg);
+ p54_free_skb(dev, skb);
+ }
+}
+
+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_device_reset(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
+
+ if (lock) {
+ ret = usb_lock_device_for_reset(priv->udev, priv->intf);
+ if (ret < 0) {
+ dev_err(&priv->udev->dev, "(p54usb) unable to lock "
+ "device for reset (%d)!\n", ret);
+ return ret;
+ }
+ }
+
+ ret = usb_reset_device(priv->udev);
+ if (lock)
+ usb_unlock_device(priv->udev);
+
+ if (ret)
+ dev_err(&priv->udev->dev, "(p54usb) unable to reset "
+ "device (%d)!\n", ret);
+
+ return ret;
+}
+
+static const char p54u_romboot_3887[] = "~~~~";
+static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ u8 *buf;
+ int ret;
+
+ buf = kmemdup(p54u_romboot_3887, 4, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
+ buf, 4);
+ kfree(buf);
+ if (ret)
+ dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
+ "boot ROM (%d)!\n", ret);
+
+ return ret;
+}
+
+static const char p54u_firmware_upload_3887[] = "<\r";
+static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ int err, alen;
+ u8 carry = 0;
+ u8 *buf, *tmp;
+ const u8 *data;
+ unsigned int left, remains, block_size;
+ struct x2_header *hdr;
+ unsigned long timeout;
+
+ err = p54u_firmware_reset_3887(dev);
+ if (err)
+ return err;
+
+ tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ left = block_size = min_t(size_t, P54U_FW_BLOCK, priv->fw->size);
+ strcpy(buf, p54u_firmware_upload_3887);
+ left -= strlen(p54u_firmware_upload_3887);
+ tmp += strlen(p54u_firmware_upload_3887);
+
+ data = priv->fw->data;
+ remains = priv->fw->size;
+
+ hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
+ 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(priv->fw->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) {
+ dev_err(&priv->udev->dev, "(p54usb) 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, priv->fw->data,
+ priv->fw->size));
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
+ if (err) {
+ dev_err(&priv->udev->dev, "(p54usb) 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)) {
+ err = -EINVAL;
+ break;
+ }
+
+ if (time_after(jiffies, timeout)) {
+ dev_err(&priv->udev->dev, "(p54usb) firmware boot "
+ "timed out!\n");
+ err = -ETIMEDOUT;
+ break;
+ }
+ }
+ if (err) {
+ dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
+ goto err_upload_failed;
+ }
+
+ buf[0] = 'g';
+ buf[1] = '\r';
+ err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
+ if (err) {
+ dev_err(&priv->udev->dev, "(p54usb) 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:
+ kfree(buf);
+ return err;
+}
+
+static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
+{
+ struct p54u_priv *priv = dev->priv;
+ const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
+ int err, alen;
+ void *buf;
+ __le32 reg;
+ unsigned int remains, offset;
+ const u8 *data;
+
+ buf = kmalloc(512, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+#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 = priv->fw->size;
+ data = priv->fw->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) {
+ dev_err(&priv->udev->dev, "(p54usb) 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))) {
+ dev_err(&priv->udev->dev, "(p54usb) 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:
+ kfree(buf);
+ return err;
+}
+
+static int p54_find_type(struct p54u_priv *priv)
+{
+ int i;
+
+ for (i = 0; i < __NUM_P54U_HWTYPES; i++)
+ if (p54u_fwlist[i].type == priv->hw_type)
+ break;
+ if (i == __NUM_P54U_HWTYPES)
+ return -EOPNOTSUPP;
+
+ return i;
+}
+
+static int p54u_start_ops(struct p54u_priv *priv)
+{
+ struct ieee80211_hw *dev = priv->common.hw;
+ int ret;
+
+ ret = p54_parse_firmware(dev, priv->fw);
+ if (ret)
+ goto err_out;
+
+ ret = p54_find_type(priv);
+ if (ret < 0)
+ goto err_out;
+
+ if (priv->common.fw_interface != p54u_fwlist[ret].intf) {
+ dev_err(&priv->udev->dev, "wrong firmware, please get "
+ "a firmware for \"%s\" and try again.\n",
+ p54u_fwlist[ret].hw);
+ ret = -ENODEV;
+ goto err_out;
+ }
+
+ ret = priv->upload_fw(dev);
+ if (ret)
+ goto err_out;
+
+ ret = p54u_open(dev);
+ if (ret)
+ goto err_out;
+
+ ret = p54_read_eeprom(dev);
+ if (ret)
+ goto err_stop;
+
+ p54u_stop(dev);
+
+ ret = p54_register_common(dev, &priv->udev->dev);
+ if (ret)
+ goto err_stop;
+
+ return 0;
+
+err_stop:
+ p54u_stop(dev);
+
+err_out:
+ /*
+ * p54u_disconnect will do the rest of the
+ * cleanup
+ */
+ return ret;
+}
+
+static void p54u_load_firmware_cb(const struct firmware *firmware,
+ void *context)
+{
+ struct p54u_priv *priv = context;
+ struct usb_device *udev = priv->udev;
+ int err;
+
+ complete(&priv->fw_wait_load);
+ if (firmware) {
+ priv->fw = firmware;
+ err = p54u_start_ops(priv);
+ } else {
+ err = -ENOENT;
+ dev_err(&udev->dev, "Firmware not found.\n");
+ }
+
+ if (err) {
+ struct device *parent = priv->udev->dev.parent;
+
+ dev_err(&udev->dev, "failed to initialize device (%d)\n", err);
+
+ if (parent)
+ device_lock(parent);
+
+ device_release_driver(&udev->dev);
+ /*
+ * At this point p54u_disconnect has already freed
+ * the "priv" context. Do not use it anymore!
+ */
+ priv = NULL;
+
+ if (parent)
+ device_unlock(parent);
+ }
+
+ usb_put_dev(udev);
+}
+
+static int p54u_load_firmware(struct ieee80211_hw *dev,
+ struct usb_interface *intf)
+{
+ struct usb_device *udev = interface_to_usbdev(intf);
+ struct p54u_priv *priv = dev->priv;
+ struct device *device = &udev->dev;
+ int err, i;
+
+ BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
+
+ init_completion(&priv->fw_wait_load);
+ i = p54_find_type(priv);
+ if (i < 0)
+ return i;
+
+ dev_info(&priv->udev->dev, "Loading firmware file %s\n",
+ p54u_fwlist[i].fw);
+
+ usb_get_dev(udev);
+ err = request_firmware_nowait(THIS_MODULE, 1, p54u_fwlist[i].fw,
+ device, GFP_KERNEL, priv,
+ p54u_load_firmware_cb);
+ if (err) {
+ dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
+ "(%d)!\n", p54u_fwlist[i].fw, err);
+ usb_put_dev(udev);
+ }
+
+ return err;
+}
+
+static int 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;
+
+ dev = p54_init_common(sizeof(*priv));
+
+ if (!dev) {
+ dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
+ return -ENOMEM;
+ }
+
+ priv = dev->priv;
+ priv->hw_type = P54U_INVALID_HW;
+
+ SET_IEEE80211_DEV(dev, &intf->dev);
+ usb_set_intfdata(intf, dev);
+ priv->udev = udev;
+ priv->intf = intf;
+ skb_queue_head_init(&priv->rx_queue);
+ init_usb_anchor(&priv->submitted);
+
+ 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;
+ priv->common.stop = p54u_stop;
+ if (recognized_pipes < P54U_PIPE_NUMBER) {
+#ifdef CONFIG_PM
+ /* ISL3887 needs a full reset on resume */
+ udev->reset_resume = 1;
+#endif /* CONFIG_PM */
+ err = p54u_device_reset(dev);
+
+ priv->hw_type = P54U_3887;
+ dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
+ priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
+ priv->common.tx = p54u_tx_lm87;
+ priv->upload_fw = p54u_upload_firmware_3887;
+ } else {
+ priv->hw_type = P54U_NET2280;
+ 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->upload_fw = p54u_upload_firmware_net2280;
+ }
+ err = p54u_load_firmware(dev, intf);
+ if (err) {
+ usb_put_dev(udev);
+ p54_free_common(dev);
+ }
+ return err;
+}
+
+static void p54u_disconnect(struct usb_interface *intf)
+{
+ struct ieee80211_hw *dev = usb_get_intfdata(intf);
+ struct p54u_priv *priv;
+
+ if (!dev)
+ return;
+
+ priv = dev->priv;
+ wait_for_completion(&priv->fw_wait_load);
+ p54_unregister_common(dev);
+
+ usb_put_dev(interface_to_usbdev(intf));
+ release_firmware(priv->fw);
+ p54_free_common(dev);
+}
+
+static int p54u_pre_reset(struct usb_interface *intf)
+{
+ struct ieee80211_hw *dev = usb_get_intfdata(intf);
+
+ if (!dev)
+ return -ENODEV;
+
+ p54u_stop(dev);
+ return 0;
+}
+
+static int p54u_resume(struct usb_interface *intf)
+{
+ struct ieee80211_hw *dev = usb_get_intfdata(intf);
+ struct p54u_priv *priv;
+
+ if (!dev)
+ return -ENODEV;
+
+ priv = dev->priv;
+ if (unlikely(!(priv->upload_fw && priv->fw)))
+ return 0;
+
+ return priv->upload_fw(dev);
+}
+
+static int p54u_post_reset(struct usb_interface *intf)
+{
+ struct ieee80211_hw *dev = usb_get_intfdata(intf);
+ struct p54u_priv *priv;
+ int err;
+
+ err = p54u_resume(intf);
+ if (err)
+ return err;
+
+ /* reinitialize old device state */
+ priv = dev->priv;
+ if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
+ ieee80211_restart_hw(dev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ return p54u_pre_reset(intf);
+}
+
+#endif /* CONFIG_PM */
+
+static struct usb_driver p54u_driver = {
+ .name = "p54usb",
+ .id_table = p54u_table,
+ .probe = p54u_probe,
+ .disconnect = p54u_disconnect,
+ .pre_reset = p54u_pre_reset,
+ .post_reset = p54u_post_reset,
+#ifdef CONFIG_PM
+ .suspend = p54u_suspend,
+ .resume = p54u_resume,
+ .reset_resume = p54u_resume,
+#endif /* CONFIG_PM */
+ .soft_unbind = 1,
+ .disable_hub_initiated_lpm = 1,
+};
+
+module_usb_driver(p54u_driver);
Code Review / kvmfornfv.git / blobdiff