--- /dev/null
+/*
+ * USB Orinoco driver
+ *
+ * Copyright (c) 2003 Manuel Estrada Sainz
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License
+ * at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License version 2 (the "GPL"), in
+ * which case the provisions of the GPL are applicable instead of the
+ * above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the MPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice and
+ * other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file
+ * under either the MPL or the GPL.
+ *
+ * Queueing code based on linux-wlan-ng 0.2.1-pre5
+ *
+ * Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
+ *
+ * The license is the same as above.
+ *
+ * Initialy based on USB Skeleton driver - 0.7
+ *
+ * Copyright (c) 2001 Greg Kroah-Hartman (greg@kroah.com)
+ *
+ * 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, or (at your option) any later version.
+ *
+ * NOTE: The original USB Skeleton driver is GPL, but all that code is
+ * gone so MPL/GPL applies.
+ */
+
+#define DRIVER_NAME "orinoco_usb"
+#define PFX DRIVER_NAME ": "
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/fcntl.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/smp_lock.h>
+#include <linux/usb.h>
+#include <linux/timer.h>
+
+#include <linux/netdevice.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/wireless.h>
+#include <linux/firmware.h>
+
+#include "orinoco.h"
+
+#ifndef URB_ASYNC_UNLINK
+#define URB_ASYNC_UNLINK 0
+#endif
+
+/* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
+static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
+#define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2)
+
+struct header_struct {
+ /* 802.3 */
+ u8 dest[ETH_ALEN];
+ u8 src[ETH_ALEN];
+ __be16 len;
+ /* 802.2 */
+ u8 dsap;
+ u8 ssap;
+ u8 ctrl;
+ /* SNAP */
+ u8 oui[3];
+ __be16 ethertype;
+} __attribute__ ((packed));
+
+struct ez_usb_fw {
+ u16 size;
+ const u8 *code;
+};
+
+static struct ez_usb_fw firmware = {
+ .size = 0,
+ .code = NULL,
+};
+
+#ifdef CONFIG_USB_DEBUG
+static int debug = 1;
+#else
+static int debug;
+#endif
+
+/* Debugging macros */
+#undef dbg
+#define dbg(format, arg...) \
+ do { if (debug) printk(KERN_DEBUG PFX "%s: " format "\n", \
+ __func__ , ## arg); } while (0)
+#undef err
+#define err(format, arg...) \
+ do { printk(KERN_ERR PFX format "\n", ## arg); } while (0)
+
+/* Module paramaters */
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+MODULE_FIRMWARE("orinoco_ezusb_fw");
+
+/*
+ * Under some conditions, the card gets stuck and stops paying attention
+ * to the world (i.e. data communication stalls) until we do something to
+ * it. Sending an INQ_TALLIES command seems to be enough and should be
+ * harmless otherwise. This behaviour has been observed when using the
+ * driver on a systemimager client during installation. In the past a
+ * timer was used to send INQ_TALLIES commands when there was no other
+ * activity, but it was troublesome and was removed.
+ */
+
+#define USB_COMPAQ_VENDOR_ID 0x049f /* Compaq Computer Corp. */
+#define USB_COMPAQ_WL215_ID 0x001f /* Compaq WL215 USB Adapter */
+#define USB_COMPAQ_W200_ID 0x0076 /* Compaq W200 USB Adapter */
+#define USB_HP_WL215_ID 0x0082 /* Compaq WL215 USB Adapter */
+
+#define USB_MELCO_VENDOR_ID 0x0411
+#define USB_BUFFALO_L11_ID 0x0006 /* BUFFALO WLI-USB-L11 */
+#define USB_BUFFALO_L11G_WR_ID 0x000B /* BUFFALO WLI-USB-L11G-WR */
+#define USB_BUFFALO_L11G_ID 0x000D /* BUFFALO WLI-USB-L11G */
+
+#define USB_LUCENT_VENDOR_ID 0x047E /* Lucent Technologies */
+#define USB_LUCENT_ORINOCO_ID 0x0300 /* Lucent/Agere Orinoco USB Client */
+
+#define USB_AVAYA8_VENDOR_ID 0x0D98
+#define USB_AVAYAE_VENDOR_ID 0x0D9E
+#define USB_AVAYA_WIRELESS_ID 0x0300 /* Avaya Wireless USB Card */
+
+#define USB_AGERE_VENDOR_ID 0x0D4E /* Agere Systems */
+#define USB_AGERE_MODEL0801_ID 0x1000 /* Wireless USB Card Model 0801 */
+#define USB_AGERE_MODEL0802_ID 0x1001 /* Wireless USB Card Model 0802 */
+#define USB_AGERE_REBRANDED_ID 0x047A /* WLAN USB Card */
+
+#define USB_ELSA_VENDOR_ID 0x05CC
+#define USB_ELSA_AIRLANCER_ID 0x3100 /* ELSA AirLancer USB-11 */
+
+#define USB_LEGEND_VENDOR_ID 0x0E7C
+#define USB_LEGEND_JOYNET_ID 0x0300 /* Joynet WLAN USB Card */
+
+#define USB_SAMSUNG_VENDOR_ID 0x04E8
+#define USB_SAMSUNG_SEW2001U1_ID 0x5002 /* Samsung SEW-2001u Card */
+#define USB_SAMSUNG_SEW2001U2_ID 0x5B11 /* Samsung SEW-2001u Card */
+#define USB_SAMSUNG_SEW2003U_ID 0x7011 /* Samsung SEW-2003U Card */
+
+#define USB_IGATE_VENDOR_ID 0x0681
+#define USB_IGATE_IGATE_11M_ID 0x0012 /* I-GATE 11M USB Card */
+
+#define USB_FUJITSU_VENDOR_ID 0x0BF8
+#define USB_FUJITSU_E1100_ID 0x1002 /* connect2AIR WLAN E-1100 USB */
+
+#define USB_2WIRE_VENDOR_ID 0x1630
+#define USB_2WIRE_WIRELESS_ID 0xff81 /* 2Wire Wireless USB adapter */
+
+
+#define EZUSB_REQUEST_FW_TRANS 0xA0
+#define EZUSB_REQUEST_TRIGER 0xAA
+#define EZUSB_REQUEST_TRIG_AC 0xAC
+#define EZUSB_CPUCS_REG 0x7F92
+
+#define EZUSB_RID_TX 0x0700
+#define EZUSB_RID_RX 0x0701
+#define EZUSB_RID_INIT1 0x0702
+#define EZUSB_RID_ACK 0x0710
+#define EZUSB_RID_DOCMD 0x0860
+
+/* Recognize info frames */
+#define EZUSB_IS_INFO(id) ((id >= 0xF000) && (id <= 0xF2FF))
+
+#define EZUSB_MAGIC 0x0210
+
+#define EZUSB_FRAME_DATA 1
+#define EZUSB_FRAME_CONTROL 2
+
+#define DEF_TIMEOUT (3*HZ)
+
+#define BULK_BUF_SIZE 2048
+
+#define FW_BUF_SIZE 64
+#define FW_VAR_OFFSET_PTR 0x359
+#define FW_VAR_VALUE 0
+#define FW_HOLE_START 0x100
+#define FW_HOLE_END 0x300
+
+struct ezusb_packet {
+ __le16 magic; /* 0x0210 */
+ u8 req_reply_count;
+ u8 ans_reply_count;
+ __le16 frame_type; /* 0x01 for data frames, 0x02 otherwise */
+ __le16 size; /* transport size */
+ __le16 crc; /* CRC up to here */
+ __le16 hermes_len;
+ __le16 hermes_rid;
+ u8 data[0];
+} __attribute__ ((packed));
+
+/* Table of devices that work or may work with this driver */
+static struct usb_device_id ezusb_table[] = {
+ {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_WL215_ID)},
+ {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_HP_WL215_ID)},
+ {USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_W200_ID)},
+ {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11_ID)},
+ {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_WR_ID)},
+ {USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_ID)},
+ {USB_DEVICE(USB_LUCENT_VENDOR_ID, USB_LUCENT_ORINOCO_ID)},
+ {USB_DEVICE(USB_AVAYA8_VENDOR_ID, USB_AVAYA_WIRELESS_ID)},
+ {USB_DEVICE(USB_AVAYAE_VENDOR_ID, USB_AVAYA_WIRELESS_ID)},
+ {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0801_ID)},
+ {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0802_ID)},
+ {USB_DEVICE(USB_ELSA_VENDOR_ID, USB_ELSA_AIRLANCER_ID)},
+ {USB_DEVICE(USB_LEGEND_VENDOR_ID, USB_LEGEND_JOYNET_ID)},
+ {USB_DEVICE_VER(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U1_ID,
+ 0, 0)},
+ {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U2_ID)},
+ {USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2003U_ID)},
+ {USB_DEVICE(USB_IGATE_VENDOR_ID, USB_IGATE_IGATE_11M_ID)},
+ {USB_DEVICE(USB_FUJITSU_VENDOR_ID, USB_FUJITSU_E1100_ID)},
+ {USB_DEVICE(USB_2WIRE_VENDOR_ID, USB_2WIRE_WIRELESS_ID)},
+ {USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_REBRANDED_ID)},
+ {} /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, ezusb_table);
+
+/* Structure to hold all of our device specific stuff */
+struct ezusb_priv {
+ struct usb_device *udev;
+ struct net_device *dev;
+ struct mutex mtx;
+ spinlock_t req_lock;
+ struct list_head req_pending;
+ struct list_head req_active;
+ spinlock_t reply_count_lock;
+ u16 hermes_reg_fake[0x40];
+ u8 *bap_buf;
+ struct urb *read_urb;
+ int read_pipe;
+ int write_pipe;
+ u8 reply_count;
+};
+
+enum ezusb_state {
+ EZUSB_CTX_START,
+ EZUSB_CTX_QUEUED,
+ EZUSB_CTX_REQ_SUBMITTED,
+ EZUSB_CTX_REQ_COMPLETE,
+ EZUSB_CTX_RESP_RECEIVED,
+ EZUSB_CTX_REQ_TIMEOUT,
+ EZUSB_CTX_REQ_FAILED,
+ EZUSB_CTX_RESP_TIMEOUT,
+ EZUSB_CTX_REQSUBMIT_FAIL,
+ EZUSB_CTX_COMPLETE,
+};
+
+struct request_context {
+ struct list_head list;
+ atomic_t refcount;
+ struct completion done; /* Signals that CTX is dead */
+ int killed;
+ struct urb *outurb; /* OUT for req pkt */
+ struct ezusb_priv *upriv;
+ struct ezusb_packet *buf;
+ int buf_length;
+ struct timer_list timer; /* Timeout handling */
+ enum ezusb_state state; /* Current state */
+ /* the RID that we will wait for */
+ u16 out_rid;
+ u16 in_rid;
+};
+
+
+/* Forward declarations */
+static void ezusb_ctx_complete(struct request_context *ctx);
+static void ezusb_req_queue_run(struct ezusb_priv *upriv);
+static void ezusb_bulk_in_callback(struct urb *urb);
+
+static inline u8 ezusb_reply_inc(u8 count)
+{
+ if (count < 0x7F)
+ return count + 1;
+ else
+ return 1;
+}
+
+static void ezusb_request_context_put(struct request_context *ctx)
+{
+ if (!atomic_dec_and_test(&ctx->refcount))
+ return;
+
+ WARN_ON(!ctx->done.done);
+ BUG_ON(ctx->outurb->status == -EINPROGRESS);
+ BUG_ON(timer_pending(&ctx->timer));
+ usb_free_urb(ctx->outurb);
+ kfree(ctx->buf);
+ kfree(ctx);
+}
+
+static inline void ezusb_mod_timer(struct ezusb_priv *upriv,
+ struct timer_list *timer,
+ unsigned long expire)
+{
+ if (!upriv->udev)
+ return;
+ mod_timer(timer, expire);
+}
+
+static void ezusb_request_timerfn(u_long _ctx)
+{
+ struct request_context *ctx = (void *) _ctx;
+
+ ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
+ if (usb_unlink_urb(ctx->outurb) == -EINPROGRESS) {
+ ctx->state = EZUSB_CTX_REQ_TIMEOUT;
+ } else {
+ ctx->state = EZUSB_CTX_RESP_TIMEOUT;
+ dbg("couldn't unlink");
+ atomic_inc(&ctx->refcount);
+ ctx->killed = 1;
+ ezusb_ctx_complete(ctx);
+ ezusb_request_context_put(ctx);
+ }
+};
+
+static struct request_context *ezusb_alloc_ctx(struct ezusb_priv *upriv,
+ u16 out_rid, u16 in_rid)
+{
+ struct request_context *ctx;
+
+ ctx = kmalloc(sizeof(*ctx), GFP_ATOMIC);
+ if (!ctx)
+ return NULL;
+
+ memset(ctx, 0, sizeof(*ctx));
+
+ ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC);
+ if (!ctx->buf) {
+ kfree(ctx);
+ return NULL;
+ }
+ ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!ctx->outurb) {
+ kfree(ctx->buf);
+ kfree(ctx);
+ return NULL;
+ }
+
+ ctx->upriv = upriv;
+ ctx->state = EZUSB_CTX_START;
+ ctx->out_rid = out_rid;
+ ctx->in_rid = in_rid;
+
+ atomic_set(&ctx->refcount, 1);
+ init_completion(&ctx->done);
+
+ init_timer(&ctx->timer);
+ ctx->timer.function = ezusb_request_timerfn;
+ ctx->timer.data = (u_long) ctx;
+ return ctx;
+}
+
+
+/* Hopefully the real complete_all will soon be exported, in the mean
+ * while this should work. */
+static inline void ezusb_complete_all(struct completion *comp)
+{
+ complete(comp);
+ complete(comp);
+ complete(comp);
+ complete(comp);
+}
+
+static void ezusb_ctx_complete(struct request_context *ctx)
+{
+ struct ezusb_priv *upriv = ctx->upriv;
+ unsigned long flags;
+
+ spin_lock_irqsave(&upriv->req_lock, flags);
+
+ list_del_init(&ctx->list);
+ if (upriv->udev) {
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+ ezusb_req_queue_run(upriv);
+ spin_lock_irqsave(&upriv->req_lock, flags);
+ }
+
+ switch (ctx->state) {
+ case EZUSB_CTX_COMPLETE:
+ case EZUSB_CTX_REQSUBMIT_FAIL:
+ case EZUSB_CTX_REQ_FAILED:
+ case EZUSB_CTX_REQ_TIMEOUT:
+ case EZUSB_CTX_RESP_TIMEOUT:
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ if ((ctx->out_rid == EZUSB_RID_TX) && upriv->dev) {
+ struct net_device *dev = upriv->dev;
+ struct orinoco_private *priv = ndev_priv(dev);
+ struct net_device_stats *stats = &priv->stats;
+
+ if (ctx->state != EZUSB_CTX_COMPLETE)
+ stats->tx_errors++;
+ else
+ stats->tx_packets++;
+
+ netif_wake_queue(dev);
+ }
+ ezusb_complete_all(&ctx->done);
+ ezusb_request_context_put(ctx);
+ break;
+
+ default:
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+ if (!upriv->udev) {
+ /* This is normal, as all request contexts get flushed
+ * when the device is disconnected */
+ err("Called, CTX not terminating, but device gone");
+ ezusb_complete_all(&ctx->done);
+ ezusb_request_context_put(ctx);
+ break;
+ }
+
+ err("Called, CTX not in terminating state.");
+ /* Things are really bad if this happens. Just leak
+ * the CTX because it may still be linked to the
+ * queue or the OUT urb may still be active.
+ * Just leaking at least prevents an Oops or Panic.
+ */
+ break;
+ }
+}
+
+/**
+ * ezusb_req_queue_run:
+ * Description:
+ * Note: Only one active CTX at any one time, because there's no
+ * other (reliable) way to match the response URB to the correct
+ * CTX.
+ **/
+static void ezusb_req_queue_run(struct ezusb_priv *upriv)
+{
+ unsigned long flags;
+ struct request_context *ctx;
+ int result;
+
+ spin_lock_irqsave(&upriv->req_lock, flags);
+
+ if (!list_empty(&upriv->req_active))
+ goto unlock;
+
+ if (list_empty(&upriv->req_pending))
+ goto unlock;
+
+ ctx =
+ list_entry(upriv->req_pending.next, struct request_context,
+ list);
+
+ if (!ctx->upriv->udev)
+ goto unlock;
+
+ /* We need to split this off to avoid a race condition */
+ list_move_tail(&ctx->list, &upriv->req_active);
+
+ if (ctx->state == EZUSB_CTX_QUEUED) {
+ atomic_inc(&ctx->refcount);
+ result = usb_submit_urb(ctx->outurb, GFP_ATOMIC);
+ if (result) {
+ ctx->state = EZUSB_CTX_REQSUBMIT_FAIL;
+
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ err("Fatal, failed to submit command urb."
+ " error=%d\n", result);
+
+ ezusb_ctx_complete(ctx);
+ ezusb_request_context_put(ctx);
+ goto done;
+ }
+
+ ctx->state = EZUSB_CTX_REQ_SUBMITTED;
+ ezusb_mod_timer(ctx->upriv, &ctx->timer,
+ jiffies + DEF_TIMEOUT);
+ }
+
+ unlock:
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ done:
+ return;
+}
+
+static void ezusb_req_enqueue_run(struct ezusb_priv *upriv,
+ struct request_context *ctx)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&upriv->req_lock, flags);
+
+ if (!ctx->upriv->udev) {
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+ goto done;
+ }
+ atomic_inc(&ctx->refcount);
+ list_add_tail(&ctx->list, &upriv->req_pending);
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ ctx->state = EZUSB_CTX_QUEUED;
+ ezusb_req_queue_run(upriv);
+
+ done:
+ return;
+}
+
+static void ezusb_request_out_callback(struct urb *urb)
+{
+ unsigned long flags;
+ enum ezusb_state state;
+ struct request_context *ctx = urb->context;
+ struct ezusb_priv *upriv = ctx->upriv;
+
+ spin_lock_irqsave(&upriv->req_lock, flags);
+
+ del_timer(&ctx->timer);
+
+ if (ctx->killed) {
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+ pr_warning("interrupt called with dead ctx");
+ goto out;
+ }
+
+ state = ctx->state;
+
+ if (urb->status == 0) {
+ switch (state) {
+ case EZUSB_CTX_REQ_SUBMITTED:
+ if (ctx->in_rid) {
+ ctx->state = EZUSB_CTX_REQ_COMPLETE;
+ /* reply URB still pending */
+ ezusb_mod_timer(upriv, &ctx->timer,
+ jiffies + DEF_TIMEOUT);
+ spin_unlock_irqrestore(&upriv->req_lock,
+ flags);
+ break;
+ }
+ /* fall through */
+ case EZUSB_CTX_RESP_RECEIVED:
+ /* IN already received before this OUT-ACK */
+ ctx->state = EZUSB_CTX_COMPLETE;
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+ ezusb_ctx_complete(ctx);
+ break;
+
+ default:
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+ err("Unexpected state(0x%x, %d) in OUT URB",
+ state, urb->status);
+ break;
+ }
+ } else {
+ /* If someone cancels the OUT URB then its status
+ * should be either -ECONNRESET or -ENOENT.
+ */
+ switch (state) {
+ case EZUSB_CTX_REQ_SUBMITTED:
+ case EZUSB_CTX_RESP_RECEIVED:
+ ctx->state = EZUSB_CTX_REQ_FAILED;
+ /* fall through */
+
+ case EZUSB_CTX_REQ_FAILED:
+ case EZUSB_CTX_REQ_TIMEOUT:
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ ezusb_ctx_complete(ctx);
+ break;
+
+ default:
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ err("Unexpected state(0x%x, %d) in OUT URB",
+ state, urb->status);
+ break;
+ }
+ }
+ out:
+ ezusb_request_context_put(ctx);
+}
+
+static void ezusb_request_in_callback(struct ezusb_priv *upriv,
+ struct urb *urb)
+{
+ struct ezusb_packet *ans = urb->transfer_buffer;
+ struct request_context *ctx = NULL;
+ enum ezusb_state state;
+ unsigned long flags;
+
+ /* Find the CTX on the active queue that requested this URB */
+ spin_lock_irqsave(&upriv->req_lock, flags);
+ if (upriv->udev) {
+ struct list_head *item;
+
+ list_for_each(item, &upriv->req_active) {
+ struct request_context *c;
+ int reply_count;
+
+ c = list_entry(item, struct request_context, list);
+ reply_count =
+ ezusb_reply_inc(c->buf->req_reply_count);
+ if ((ans->ans_reply_count == reply_count)
+ && (le16_to_cpu(ans->hermes_rid) == c->in_rid)) {
+ ctx = c;
+ break;
+ }
+ dbg("Skipped (0x%x/0x%x) (%d/%d)",
+ le16_to_cpu(ans->hermes_rid),
+ c->in_rid, ans->ans_reply_count, reply_count);
+ }
+ }
+
+ if (ctx == NULL) {
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+ err("%s: got unexpected RID: 0x%04X", __func__,
+ le16_to_cpu(ans->hermes_rid));
+ ezusb_req_queue_run(upriv);
+ return;
+ }
+
+ /* The data we want is in the in buffer, exchange */
+ urb->transfer_buffer = ctx->buf;
+ ctx->buf = (void *) ans;
+ ctx->buf_length = urb->actual_length;
+
+ state = ctx->state;
+ switch (state) {
+ case EZUSB_CTX_REQ_SUBMITTED:
+ /* We have received our response URB before
+ * our request has been acknowledged. Do NOT
+ * destroy our CTX yet, because our OUT URB
+ * is still alive ...
+ */
+ ctx->state = EZUSB_CTX_RESP_RECEIVED;
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ /* Let the machine continue running. */
+ break;
+
+ case EZUSB_CTX_REQ_COMPLETE:
+ /* This is the usual path: our request
+ * has already been acknowledged, and
+ * we have now received the reply.
+ */
+ ctx->state = EZUSB_CTX_COMPLETE;
+
+ /* Stop the intimer */
+ del_timer(&ctx->timer);
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ /* Call the completion handler */
+ ezusb_ctx_complete(ctx);
+ break;
+
+ default:
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ pr_warning("Matched IN URB, unexpected context state(0x%x)",
+ state);
+ /* Throw this CTX away and try submitting another */
+ del_timer(&ctx->timer);
+ ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
+ usb_unlink_urb(ctx->outurb);
+ ezusb_req_queue_run(upriv);
+ break;
+ } /* switch */
+}
+
+
+static void ezusb_req_ctx_wait(struct ezusb_priv *upriv,
+ struct request_context *ctx)
+{
+ switch (ctx->state) {
+ case EZUSB_CTX_QUEUED:
+ case EZUSB_CTX_REQ_SUBMITTED:
+ case EZUSB_CTX_REQ_COMPLETE:
+ case EZUSB_CTX_RESP_RECEIVED:
+ if (in_atomic()) {
+ /* If we get called from a timer, timeout timers don't
+ * get the chance to run themselves. So we make sure
+ * that we don't sleep for ever */
+ int msecs = DEF_TIMEOUT * (1000 / HZ);
+ while (!ctx->done.done && msecs--)
+ udelay(1000);
+ } else {
+ wait_event_interruptible(ctx->done.wait,
+ ctx->done.done);
+ }
+ break;
+ default:
+ /* Done or failed - nothing to wait for */
+ break;
+ }
+}
+
+static inline u16 build_crc(struct ezusb_packet *data)
+{
+ u16 crc = 0;
+ u8 *bytes = (u8 *)data;
+ int i;
+
+ for (i = 0; i < 8; i++)
+ crc = (crc << 1) + bytes[i];
+
+ return crc;
+}
+
+/**
+ * ezusb_fill_req:
+ *
+ * if data == NULL and length > 0 the data is assumed to be already in
+ * the target buffer and only the header is filled.
+ *
+ */
+static int ezusb_fill_req(struct ezusb_packet *req, u16 length, u16 rid,
+ const void *data, u16 frame_type, u8 reply_count)
+{
+ int total_size = sizeof(*req) + length;
+
+ BUG_ON(total_size > BULK_BUF_SIZE);
+
+ req->magic = cpu_to_le16(EZUSB_MAGIC);
+ req->req_reply_count = reply_count;
+ req->ans_reply_count = 0;
+ req->frame_type = cpu_to_le16(frame_type);
+ req->size = cpu_to_le16(length + 4);
+ req->crc = cpu_to_le16(build_crc(req));
+ req->hermes_len = cpu_to_le16(HERMES_BYTES_TO_RECLEN(length));
+ req->hermes_rid = cpu_to_le16(rid);
+ if (data)
+ memcpy(req->data, data, length);
+ return total_size;
+}
+
+static int ezusb_submit_in_urb(struct ezusb_priv *upriv)
+{
+ int retval = 0;
+ void *cur_buf = upriv->read_urb->transfer_buffer;
+
+ if (upriv->read_urb->status == -EINPROGRESS) {
+ dbg("urb busy, not resubmiting");
+ retval = -EBUSY;
+ goto exit;
+ }
+ usb_fill_bulk_urb(upriv->read_urb, upriv->udev, upriv->read_pipe,
+ cur_buf, BULK_BUF_SIZE,
+ ezusb_bulk_in_callback, upriv);
+ upriv->read_urb->transfer_flags = 0;
+ retval = usb_submit_urb(upriv->read_urb, GFP_ATOMIC);
+ if (retval)
+ err("%s submit failed %d", __func__, retval);
+
+ exit:
+ return retval;
+}
+
+static inline int ezusb_8051_cpucs(struct ezusb_priv *upriv, int reset)
+{
+ u8 res_val = reset; /* avoid argument promotion */
+
+ if (!upriv->udev) {
+ err("%s: !upriv->udev", __func__);
+ return -EFAULT;
+ }
+ return usb_control_msg(upriv->udev,
+ usb_sndctrlpipe(upriv->udev, 0),
+ EZUSB_REQUEST_FW_TRANS,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE |
+ USB_DIR_OUT, EZUSB_CPUCS_REG, 0, &res_val,
+ sizeof(res_val), DEF_TIMEOUT);
+}
+
+static int ezusb_firmware_download(struct ezusb_priv *upriv,
+ struct ez_usb_fw *fw)
+{
+ u8 fw_buffer[FW_BUF_SIZE];
+ int retval, addr;
+ int variant_offset;
+
+ /*
+ * This byte is 1 and should be replaced with 0. The offset is
+ * 0x10AD in version 0.0.6. The byte in question should follow
+ * the end of the code pointed to by the jump in the beginning
+ * of the firmware. Also, it is read by code located at 0x358.
+ */
+ variant_offset = be16_to_cpup((__be16 *) &fw->code[FW_VAR_OFFSET_PTR]);
+ if (variant_offset >= fw->size) {
+ printk(KERN_ERR PFX "Invalid firmware variant offset: "
+ "0x%04x\n", variant_offset);
+ retval = -EINVAL;
+ goto fail;
+ }
+
+ retval = ezusb_8051_cpucs(upriv, 1);
+ if (retval < 0)
+ goto fail;
+ for (addr = 0; addr < fw->size; addr += FW_BUF_SIZE) {
+ /* 0x100-0x300 should be left alone, it contains card
+ * specific data, like USB enumeration information */
+ if ((addr >= FW_HOLE_START) && (addr < FW_HOLE_END))
+ continue;
+
+ memcpy(fw_buffer, &fw->code[addr], FW_BUF_SIZE);
+ if (variant_offset >= addr &&
+ variant_offset < addr + FW_BUF_SIZE) {
+ dbg("Patching card_variant byte at 0x%04X",
+ variant_offset);
+ fw_buffer[variant_offset - addr] = FW_VAR_VALUE;
+ }
+ retval = usb_control_msg(upriv->udev,
+ usb_sndctrlpipe(upriv->udev, 0),
+ EZUSB_REQUEST_FW_TRANS,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE
+ | USB_DIR_OUT,
+ addr, 0x0,
+ fw_buffer, FW_BUF_SIZE,
+ DEF_TIMEOUT);
+
+ if (retval < 0)
+ goto fail;
+ }
+ retval = ezusb_8051_cpucs(upriv, 0);
+ if (retval < 0)
+ goto fail;
+
+ goto exit;
+ fail:
+ printk(KERN_ERR PFX "Firmware download failed, error %d\n",
+ retval);
+ exit:
+ return retval;
+}
+
+static int ezusb_access_ltv(struct ezusb_priv *upriv,
+ struct request_context *ctx,
+ u16 length, const void *data, u16 frame_type,
+ void *ans_buff, int ans_size, u16 *ans_length)
+{
+ int req_size;
+ int retval = 0;
+ enum ezusb_state state;
+
+ BUG_ON(in_irq());
+
+ if (!upriv->udev) {
+ dbg("Device disconnected");
+ return -ENODEV;
+ }
+
+ if (upriv->read_urb->status != -EINPROGRESS)
+ err("%s: in urb not pending", __func__);
+
+ /* protect upriv->reply_count, guarantee sequential numbers */
+ spin_lock_bh(&upriv->reply_count_lock);
+ req_size = ezusb_fill_req(ctx->buf, length, ctx->out_rid, data,
+ frame_type, upriv->reply_count);
+ usb_fill_bulk_urb(ctx->outurb, upriv->udev, upriv->write_pipe,
+ ctx->buf, req_size,
+ ezusb_request_out_callback, ctx);
+
+ if (ctx->in_rid)
+ upriv->reply_count = ezusb_reply_inc(upriv->reply_count);
+
+ ezusb_req_enqueue_run(upriv, ctx);
+
+ spin_unlock_bh(&upriv->reply_count_lock);
+
+ if (ctx->in_rid)
+ ezusb_req_ctx_wait(upriv, ctx);
+
+ state = ctx->state;
+ switch (state) {
+ case EZUSB_CTX_COMPLETE:
+ retval = ctx->outurb->status;
+ break;
+
+ case EZUSB_CTX_QUEUED:
+ case EZUSB_CTX_REQ_SUBMITTED:
+ if (!ctx->in_rid)
+ break;
+ default:
+ err("%s: Unexpected context state %d", __func__,
+ state);
+ /* fall though */
+ case EZUSB_CTX_REQ_TIMEOUT:
+ case EZUSB_CTX_REQ_FAILED:
+ case EZUSB_CTX_RESP_TIMEOUT:
+ case EZUSB_CTX_REQSUBMIT_FAIL:
+ printk(KERN_ERR PFX "Access failed, resetting (state %d,"
+ " reply_count %d)\n", state, upriv->reply_count);
+ upriv->reply_count = 0;
+ if (state == EZUSB_CTX_REQ_TIMEOUT
+ || state == EZUSB_CTX_RESP_TIMEOUT) {
+ printk(KERN_ERR PFX "ctx timed out\n");
+ retval = -ETIMEDOUT;
+ } else {
+ printk(KERN_ERR PFX "ctx failed\n");
+ retval = -EFAULT;
+ }
+ goto exit;
+ break;
+ }
+ if (ctx->in_rid) {
+ struct ezusb_packet *ans = ctx->buf;
+ int exp_len;
+
+ if (ans->hermes_len != 0)
+ exp_len = le16_to_cpu(ans->hermes_len) * 2 + 12;
+ else
+ exp_len = 14;
+
+ if (exp_len != ctx->buf_length) {
+ err("%s: length mismatch for RID 0x%04x: "
+ "expected %d, got %d", __func__,
+ ctx->in_rid, exp_len, ctx->buf_length);
+ retval = -EIO;
+ goto exit;
+ }
+
+ if (ans_buff)
+ memcpy(ans_buff, ans->data,
+ min_t(int, exp_len, ans_size));
+ if (ans_length)
+ *ans_length = le16_to_cpu(ans->hermes_len);
+ }
+ exit:
+ ezusb_request_context_put(ctx);
+ return retval;
+}
+
+static int ezusb_write_ltv(hermes_t *hw, int bap, u16 rid,
+ u16 length, const void *data)
+{
+ struct ezusb_priv *upriv = hw->priv;
+ u16 frame_type;
+ struct request_context *ctx;
+
+ if (length == 0)
+ return -EINVAL;
+
+ length = HERMES_RECLEN_TO_BYTES(length);
+
+ /* On memory mapped devices HERMES_RID_CNFGROUPADDRESSES can be
+ * set to be empty, but the USB bridge doesn't like it */
+ if (length == 0)
+ return 0;
+
+ ctx = ezusb_alloc_ctx(upriv, rid, EZUSB_RID_ACK);
+ if (!ctx)
+ return -ENOMEM;
+
+ if (rid == EZUSB_RID_TX)
+ frame_type = EZUSB_FRAME_DATA;
+ else
+ frame_type = EZUSB_FRAME_CONTROL;
+
+ return ezusb_access_ltv(upriv, ctx, length, data, frame_type,
+ NULL, 0, NULL);
+}
+
+static int ezusb_read_ltv(hermes_t *hw, int bap, u16 rid,
+ unsigned bufsize, u16 *length, void *buf)
+{
+ struct ezusb_priv *upriv = hw->priv;
+ struct request_context *ctx;
+
+ if ((bufsize < 0) || (bufsize % 2))
+ return -EINVAL;
+
+ ctx = ezusb_alloc_ctx(upriv, rid, rid);
+ if (!ctx)
+ return -ENOMEM;
+
+ return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL,
+ buf, bufsize, length);
+}
+
+static int ezusb_doicmd_wait(hermes_t *hw, u16 cmd, u16 parm0, u16 parm1,
+ u16 parm2, struct hermes_response *resp)
+{
+ struct ezusb_priv *upriv = hw->priv;
+ struct request_context *ctx;
+
+ __le16 data[4] = {
+ cpu_to_le16(cmd),
+ cpu_to_le16(parm0),
+ cpu_to_le16(parm1),
+ cpu_to_le16(parm2),
+ };
+ dbg("0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X",
+ cmd, parm0, parm1, parm2);
+ ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK);
+ if (!ctx)
+ return -ENOMEM;
+
+ return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
+ EZUSB_FRAME_CONTROL, NULL, 0, NULL);
+}
+
+static int ezusb_docmd_wait(hermes_t *hw, u16 cmd, u16 parm0,
+ struct hermes_response *resp)
+{
+ struct ezusb_priv *upriv = hw->priv;
+ struct request_context *ctx;
+
+ __le16 data[4] = {
+ cpu_to_le16(cmd),
+ cpu_to_le16(parm0),
+ 0,
+ 0,
+ };
+ dbg("0x%04X, parm0 0x%04X", cmd, parm0);
+ ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_DOCMD, EZUSB_RID_ACK);
+ if (!ctx)
+ return -ENOMEM;
+
+ return ezusb_access_ltv(upriv, ctx, sizeof(data), &data,
+ EZUSB_FRAME_CONTROL, NULL, 0, NULL);
+}
+
+static int ezusb_bap_pread(struct hermes *hw, int bap,
+ void *buf, int len, u16 id, u16 offset)
+{
+ struct ezusb_priv *upriv = hw->priv;
+ struct ezusb_packet *ans = (void *) upriv->read_urb->transfer_buffer;
+ int actual_length = upriv->read_urb->actual_length;
+
+ if (id == EZUSB_RID_RX) {
+ if ((sizeof(*ans) + offset + len) > actual_length) {
+ printk(KERN_ERR PFX "BAP read beyond buffer end "
+ "in rx frame\n");
+ return -EINVAL;
+ }
+ memcpy(buf, ans->data + offset, len);
+ return 0;
+ }
+
+ if (EZUSB_IS_INFO(id)) {
+ /* Include 4 bytes for length/type */
+ if ((sizeof(*ans) + offset + len - 4) > actual_length) {
+ printk(KERN_ERR PFX "BAP read beyond buffer end "
+ "in info frame\n");
+ return -EFAULT;
+ }
+ memcpy(buf, ans->data + offset - 4, len);
+ } else {
+ printk(KERN_ERR PFX "Unexpected fid 0x%04x\n", id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct orinoco_private *priv = ndev_priv(dev);
+ struct net_device_stats *stats = &priv->stats;
+ struct ezusb_priv *upriv = priv->card;
+ int err = 0;
+ char *p;
+ struct ethhdr *eh;
+ int len, data_len, data_off;
+ __le16 tx_control;
+ unsigned long flags;
+ struct request_context *ctx;
+ u8 *buf;
+ int tx_size;
+
+ if (!netif_running(dev)) {
+ printk(KERN_ERR "%s: Tx on stopped device!\n",
+ dev->name);
+ return NETDEV_TX_BUSY;
+ }
+
+ if (netif_queue_stopped(dev)) {
+ printk(KERN_DEBUG "%s: Tx while transmitter busy!\n",
+ dev->name);
+ return NETDEV_TX_BUSY;
+ }
+
+ if (orinoco_lock(priv, &flags) != 0) {
+ printk(KERN_ERR
+ "%s: orinoco_xmit() called while hw_unavailable\n",
+ dev->name);
+ return NETDEV_TX_BUSY;
+ }
+
+ if (!netif_carrier_ok(dev) ||
+ (priv->iw_mode == NL80211_IFTYPE_MONITOR)) {
+ /* Oops, the firmware hasn't established a connection,
+ silently drop the packet (this seems to be the
+ safest approach). */
+ stats->tx_errors++;
+ orinoco_unlock(priv, &flags);
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+ ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0);
+ if (!ctx)
+ goto fail;
+
+ memset(ctx->buf, 0, BULK_BUF_SIZE);
+ buf = ctx->buf->data;
+
+ /* Length of the packet body */
+ /* FIXME: what if the skb is smaller than this? */
+ len = max_t(int, skb->len - ETH_HLEN, ETH_ZLEN - ETH_HLEN);
+
+ eh = (struct ethhdr *) skb->data;
+
+ tx_control = cpu_to_le16(0);
+ memcpy(buf, &tx_control, sizeof(tx_control));
+ buf += sizeof(tx_control);
+ /* Encapsulate Ethernet-II frames */
+ if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */
+ struct header_struct *hdr = (void *) buf;
+ buf += sizeof(*hdr);
+ data_len = len;
+ data_off = sizeof(tx_control) + sizeof(*hdr);
+ p = skb->data + ETH_HLEN;
+
+ /* 802.3 header */
+ memcpy(hdr->dest, eh->h_dest, ETH_ALEN);
+ memcpy(hdr->src, eh->h_source, ETH_ALEN);
+ hdr->len = htons(data_len + ENCAPS_OVERHEAD);
+
+ /* 802.2 header */
+ memcpy(&hdr->dsap, &encaps_hdr, sizeof(encaps_hdr));
+
+ hdr->ethertype = eh->h_proto;
+ } else { /* IEEE 802.3 frame */
+ data_len = len + ETH_HLEN;
+ data_off = sizeof(tx_control);
+ p = skb->data;
+ }
+
+ memcpy(buf, p, data_len);
+ buf += data_len;
+
+ /* Finally, we actually initiate the send */
+ netif_stop_queue(dev);
+
+ /* The card may behave better if we send evenly sized usb transfers */
+ tx_size = ALIGN(buf - ctx->buf->data, 2);
+
+ err = ezusb_access_ltv(upriv, ctx, tx_size, NULL,
+ EZUSB_FRAME_DATA, NULL, 0, NULL);
+
+ if (err) {
+ netif_start_queue(dev);
+ if (net_ratelimit())
+ printk(KERN_ERR "%s: Error %d transmitting packet\n",
+ dev->name, err);
+ stats->tx_errors++;
+ goto fail;
+ }
+
+ dev->trans_start = jiffies;
+ stats->tx_bytes += data_off + data_len;
+
+ orinoco_unlock(priv, &flags);
+
+ dev_kfree_skb(skb);
+
+ return NETDEV_TX_OK;
+
+ fail:
+ orinoco_unlock(priv, &flags);
+ return NETDEV_TX_BUSY;
+}
+
+static int ezusb_allocate(struct hermes *hw, u16 size, u16 *fid)
+{
+ *fid = EZUSB_RID_TX;
+ return 0;
+}
+
+
+static int ezusb_hard_reset(struct orinoco_private *priv)
+{
+ struct ezusb_priv *upriv = priv->card;
+ int retval = ezusb_8051_cpucs(upriv, 1);
+
+ if (retval < 0) {
+ err("Failed to reset");
+ return retval;
+ }
+
+ retval = ezusb_8051_cpucs(upriv, 0);
+ if (retval < 0) {
+ err("Failed to unreset");
+ return retval;
+ }
+
+ dbg("sending control message");
+ retval = usb_control_msg(upriv->udev,
+ usb_sndctrlpipe(upriv->udev, 0),
+ EZUSB_REQUEST_TRIGER,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE |
+ USB_DIR_OUT, 0x0, 0x0, NULL, 0,
+ DEF_TIMEOUT);
+ if (retval < 0) {
+ err("EZUSB_REQUEST_TRIGER failed retval %d", retval);
+ return retval;
+ }
+#if 0
+ dbg("Sending EZUSB_REQUEST_TRIG_AC");
+ retval = usb_control_msg(upriv->udev,
+ usb_sndctrlpipe(upriv->udev, 0),
+ EZUSB_REQUEST_TRIG_AC,
+ USB_TYPE_VENDOR | USB_RECIP_DEVICE |
+ USB_DIR_OUT, 0x00FA, 0x0, NULL, 0,
+ DEF_TIMEOUT);
+ if (retval < 0) {
+ err("EZUSB_REQUEST_TRIG_AC failed retval %d", retval);
+ return retval;
+ }
+#endif
+
+ return 0;
+}
+
+
+static int ezusb_init(hermes_t *hw)
+{
+ struct ezusb_priv *upriv = hw->priv;
+ int retval;
+
+ BUG_ON(in_interrupt());
+ BUG_ON(!upriv);
+
+ upriv->reply_count = 0;
+ /* Write the MAGIC number on the simulated registers to keep
+ * orinoco.c happy */
+ hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC);
+ hermes_write_regn(hw, RXFID, EZUSB_RID_RX);
+
+ usb_kill_urb(upriv->read_urb);
+ ezusb_submit_in_urb(upriv);
+
+ retval = ezusb_write_ltv(hw, 0, EZUSB_RID_INIT1,
+ HERMES_BYTES_TO_RECLEN(2), "\x10\x00");
+ if (retval < 0) {
+ printk(KERN_ERR PFX "EZUSB_RID_INIT1 error %d\n", retval);
+ return retval;
+ }
+
+ retval = ezusb_docmd_wait(hw, HERMES_CMD_INIT, 0, NULL);
+ if (retval < 0) {
+ printk(KERN_ERR PFX "HERMES_CMD_INIT error %d\n", retval);
+ return retval;
+ }
+
+ return 0;
+}
+
+static void ezusb_bulk_in_callback(struct urb *urb)
+{
+ struct ezusb_priv *upriv = (struct ezusb_priv *) urb->context;
+ struct ezusb_packet *ans = urb->transfer_buffer;
+ u16 crc;
+ u16 hermes_rid;
+
+ if (upriv->udev == NULL) {
+ dbg("disconnected");
+ return;
+ }
+
+ if (urb->status == -ETIMEDOUT) {
+ /* When a device gets unplugged we get this every time
+ * we resubmit, flooding the logs. Since we don't use
+ * USB timeouts, it shouldn't happen any other time*/
+ pr_warning("%s: urb timed out, not resubmiting", __func__);
+ return;
+ }
+ if (urb->status == -ECONNABORTED) {
+ pr_warning("%s: connection abort, resubmiting urb",
+ __func__);
+ goto resubmit;
+ }
+ if ((urb->status == -EILSEQ)
+ || (urb->status == -ENOENT)
+ || (urb->status == -ECONNRESET)) {
+ dbg("status %d, not resubmiting", urb->status);
+ return;
+ }
+ if (urb->status)
+ dbg("status: %d length: %d",
+ urb->status, urb->actual_length);
+ if (urb->actual_length < sizeof(*ans)) {
+ err("%s: short read, ignoring", __func__);
+ goto resubmit;
+ }
+ crc = build_crc(ans);
+ if (le16_to_cpu(ans->crc) != crc) {
+ err("CRC error, ignoring packet");
+ goto resubmit;
+ }
+
+ hermes_rid = le16_to_cpu(ans->hermes_rid);
+ if ((hermes_rid != EZUSB_RID_RX) && !EZUSB_IS_INFO(hermes_rid)) {
+ ezusb_request_in_callback(upriv, urb);
+ } else if (upriv->dev) {
+ struct net_device *dev = upriv->dev;
+ struct orinoco_private *priv = ndev_priv(dev);
+ hermes_t *hw = &priv->hw;
+
+ if (hermes_rid == EZUSB_RID_RX) {
+ __orinoco_ev_rx(dev, hw);
+ } else {
+ hermes_write_regn(hw, INFOFID,
+ le16_to_cpu(ans->hermes_rid));
+ __orinoco_ev_info(dev, hw);
+ }
+ }
+
+ resubmit:
+ if (upriv->udev)
+ ezusb_submit_in_urb(upriv);
+}
+
+static inline void ezusb_delete(struct ezusb_priv *upriv)
+{
+ struct net_device *dev;
+ struct list_head *item;
+ struct list_head *tmp_item;
+ unsigned long flags;
+
+ BUG_ON(in_interrupt());
+ BUG_ON(!upriv);
+
+ dev = upriv->dev;
+ mutex_lock(&upriv->mtx);
+
+ upriv->udev = NULL; /* No timer will be rearmed from here */
+
+ usb_kill_urb(upriv->read_urb);
+
+ spin_lock_irqsave(&upriv->req_lock, flags);
+ list_for_each_safe(item, tmp_item, &upriv->req_active) {
+ struct request_context *ctx;
+ int err;
+
+ ctx = list_entry(item, struct request_context, list);
+ atomic_inc(&ctx->refcount);
+
+ ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK;
+ err = usb_unlink_urb(ctx->outurb);
+
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+ if (err == -EINPROGRESS)
+ wait_for_completion(&ctx->done);
+
+ del_timer_sync(&ctx->timer);
+ /* FIXME: there is an slight chance for the irq handler to
+ * be running */
+ if (!list_empty(&ctx->list))
+ ezusb_ctx_complete(ctx);
+
+ ezusb_request_context_put(ctx);
+ spin_lock_irqsave(&upriv->req_lock, flags);
+ }
+ spin_unlock_irqrestore(&upriv->req_lock, flags);
+
+ list_for_each_safe(item, tmp_item, &upriv->req_pending)
+ ezusb_ctx_complete(list_entry(item,
+ struct request_context, list));
+
+ if (upriv->read_urb->status == -EINPROGRESS)
+ printk(KERN_ERR PFX "Some URB in progress\n");
+
+ mutex_unlock(&upriv->mtx);
+
+ kfree(upriv->read_urb->transfer_buffer);
+ if (upriv->bap_buf != NULL)
+ kfree(upriv->bap_buf);
+ if (upriv->read_urb != NULL)
+ usb_free_urb(upriv->read_urb);
+ if (upriv->dev) {
+ struct orinoco_private *priv = ndev_priv(upriv->dev);
+ orinoco_if_del(priv);
+ free_orinocodev(priv);
+ }
+}
+
+static void ezusb_lock_irqsave(spinlock_t *lock,
+ unsigned long *flags) __acquires(lock)
+{
+ spin_lock_bh(lock);
+}
+
+static void ezusb_unlock_irqrestore(spinlock_t *lock,
+ unsigned long *flags) __releases(lock)
+{
+ spin_unlock_bh(lock);
+}
+
+static void ezusb_lock_irq(spinlock_t *lock) __acquires(lock)
+{
+ spin_lock_bh(lock);
+}
+
+static void ezusb_unlock_irq(spinlock_t *lock) __releases(lock)
+{
+ spin_unlock_bh(lock);
+}
+
+static const struct hermes_ops ezusb_ops = {
+ .init = ezusb_init,
+ .cmd_wait = ezusb_docmd_wait,
+ .init_cmd_wait = ezusb_doicmd_wait,
+ .allocate = ezusb_allocate,
+ .read_ltv = ezusb_read_ltv,
+ .write_ltv = ezusb_write_ltv,
+ .bap_pread = ezusb_bap_pread,
+ .lock_irqsave = ezusb_lock_irqsave,
+ .unlock_irqrestore = ezusb_unlock_irqrestore,
+ .lock_irq = ezusb_lock_irq,
+ .unlock_irq = ezusb_unlock_irq,
+};
+
+static const struct net_device_ops ezusb_netdev_ops = {
+ .ndo_open = orinoco_open,
+ .ndo_stop = orinoco_stop,
+ .ndo_start_xmit = ezusb_xmit,
+ .ndo_set_multicast_list = orinoco_set_multicast_list,
+ .ndo_change_mtu = orinoco_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_tx_timeout = orinoco_tx_timeout,
+ .ndo_get_stats = orinoco_get_stats,
+};
+
+static int ezusb_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(interface);
+ struct orinoco_private *priv;
+ hermes_t *hw;
+ struct ezusb_priv *upriv = NULL;
+ struct usb_interface_descriptor *iface_desc;
+ struct usb_endpoint_descriptor *ep;
+ const struct firmware *fw_entry;
+ int retval = 0;
+ int i;
+
+ priv = alloc_orinocodev(sizeof(*upriv), &udev->dev,
+ ezusb_hard_reset, NULL);
+ if (!priv) {
+ err("Couldn't allocate orinocodev");
+ goto exit;
+ }
+
+ hw = &priv->hw;
+
+ upriv = priv->card;
+
+ mutex_init(&upriv->mtx);
+ spin_lock_init(&upriv->reply_count_lock);
+
+ spin_lock_init(&upriv->req_lock);
+ INIT_LIST_HEAD(&upriv->req_pending);
+ INIT_LIST_HEAD(&upriv->req_active);
+
+ upriv->udev = udev;
+
+ hw->iobase = (void __force __iomem *) &upriv->hermes_reg_fake;
+ hw->reg_spacing = HERMES_16BIT_REGSPACING;
+ hw->priv = upriv;
+ hw->ops = &ezusb_ops;
+
+ /* set up the endpoint information */
+ /* check out the endpoints */
+
+ iface_desc = &interface->altsetting[0].desc;
+ for (i = 0; i < iface_desc->bNumEndpoints; ++i) {
+ ep = &interface->altsetting[0].endpoint[i].desc;
+
+ if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ == USB_DIR_IN) &&
+ ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_BULK)) {
+ /* we found a bulk in endpoint */
+ if (upriv->read_urb != NULL) {
+ pr_warning("Found a second bulk in ep, ignored");
+ continue;
+ }
+
+ upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!upriv->read_urb) {
+ err("No free urbs available");
+ goto error;
+ }
+ if (le16_to_cpu(ep->wMaxPacketSize) != 64)
+ pr_warning("bulk in: wMaxPacketSize!= 64");
+ if (ep->bEndpointAddress != (2 | USB_DIR_IN))
+ pr_warning("bulk in: bEndpointAddress: %d",
+ ep->bEndpointAddress);
+ upriv->read_pipe = usb_rcvbulkpipe(udev,
+ ep->
+ bEndpointAddress);
+ upriv->read_urb->transfer_buffer =
+ kmalloc(BULK_BUF_SIZE, GFP_KERNEL);
+ if (!upriv->read_urb->transfer_buffer) {
+ err("Couldn't allocate IN buffer");
+ goto error;
+ }
+ }
+
+ if (((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
+ == USB_DIR_OUT) &&
+ ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_BULK)) {
+ /* we found a bulk out endpoint */
+ if (upriv->bap_buf != NULL) {
+ pr_warning("Found a second bulk out ep, ignored");
+ continue;
+ }
+
+ if (le16_to_cpu(ep->wMaxPacketSize) != 64)
+ pr_warning("bulk out: wMaxPacketSize != 64");
+ if (ep->bEndpointAddress != 2)
+ pr_warning("bulk out: bEndpointAddress: %d",
+ ep->bEndpointAddress);
+ upriv->write_pipe = usb_sndbulkpipe(udev,
+ ep->
+ bEndpointAddress);
+ upriv->bap_buf = kmalloc(BULK_BUF_SIZE, GFP_KERNEL);
+ if (!upriv->bap_buf) {
+ err("Couldn't allocate bulk_out_buffer");
+ goto error;
+ }
+ }
+ }
+ if (!upriv->bap_buf || !upriv->read_urb) {
+ err("Didn't find the required bulk endpoints");
+ goto error;
+ }
+
+ if (request_firmware(&fw_entry, "orinoco_ezusb_fw",
+ &interface->dev) == 0) {
+ firmware.size = fw_entry->size;
+ firmware.code = fw_entry->data;
+ }
+ if (firmware.size && firmware.code) {
+ ezusb_firmware_download(upriv, &firmware);
+ } else {
+ err("No firmware to download");
+ goto error;
+ }
+
+ if (ezusb_hard_reset(priv) < 0) {
+ err("Cannot reset the device");
+ goto error;
+ }
+
+ /* If the firmware is already downloaded orinoco.c will call
+ * ezusb_init but if the firmware is not already there, that will make
+ * the kernel very unstable, so we try initializing here and quit in
+ * case of error */
+ if (ezusb_init(hw) < 0) {
+ err("Couldn't initialize the device");
+ err("Firmware may not be downloaded or may be wrong.");
+ goto error;
+ }
+
+ /* Initialise the main driver */
+ if (orinoco_init(priv) != 0) {
+ err("orinoco_init() failed\n");
+ goto error;
+ }
+
+ if (orinoco_if_add(priv, 0, 0, &ezusb_netdev_ops) != 0) {
+ upriv->dev = NULL;
+ err("%s: orinoco_if_add() failed", __func__);
+ goto error;
+ }
+ upriv->dev = priv->ndev;
+
+ goto exit;
+
+ error:
+ ezusb_delete(upriv);
+ if (upriv->dev) {
+ /* upriv->dev was 0, so ezusb_delete() didn't free it */
+ free_orinocodev(priv);
+ }
+ upriv = NULL;
+ retval = -EFAULT;
+ exit:
+ if (fw_entry) {
+ firmware.code = NULL;
+ firmware.size = 0;
+ release_firmware(fw_entry);
+ }
+ usb_set_intfdata(interface, upriv);
+ return retval;
+}
+
+
+static void ezusb_disconnect(struct usb_interface *intf)
+{
+ struct ezusb_priv *upriv = usb_get_intfdata(intf);
+ usb_set_intfdata(intf, NULL);
+ ezusb_delete(upriv);
+ printk(KERN_INFO PFX "Disconnected\n");
+}
+
+
+/* usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver orinoco_driver = {
+ .name = DRIVER_NAME,
+ .probe = ezusb_probe,
+ .disconnect = ezusb_disconnect,
+ .id_table = ezusb_table,
+};
+
+/* Can't be declared "const" or the whole __initdata section will
+ * become const */
+static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
+ " (Manuel Estrada Sainz)";
+
+static int __init ezusb_module_init(void)
+{
+ int err;
+
+ printk(KERN_DEBUG "%s\n", version);
+
+ /* register this driver with the USB subsystem */
+ err = usb_register(&orinoco_driver);
+ if (err < 0) {
+ printk(KERN_ERR PFX "usb_register failed, error %d\n",
+ err);
+ return err;
+ }
+
+ return 0;
+}
+
+static void __exit ezusb_module_exit(void)
+{
+ /* deregister this driver with the USB subsystem */
+ usb_deregister(&orinoco_driver);
+}
+
+
+module_init(ezusb_module_init);
+module_exit(ezusb_module_exit);
+
+MODULE_AUTHOR("Manuel Estrada Sainz");
+MODULE_DESCRIPTION
+ ("Driver for Orinoco wireless LAN cards using EZUSB bridge");
+MODULE_LICENSE("Dual MPL/GPL");
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff