| /* |
| * 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/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 "mic.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; |
| } __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_READ_PDA 0x0800 |
| #define EZUSB_RID_PROG_INIT 0x0852 |
| #define EZUSB_RID_PROG_SET_ADDR 0x0853 |
| #define EZUSB_RID_PROG_BYTES 0x0854 |
| #define EZUSB_RID_PROG_END 0x0855 |
| #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 MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet)) |
| |
| #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]; |
| } __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 = kzalloc(sizeof(*ctx), GFP_ATOMIC); |
| if (!ctx) |
| return NULL; |
| |
| 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_softirq()) { |
| /* 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(struct hermes *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(struct hermes *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(struct hermes *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(struct hermes *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 int ezusb_read_pda(struct hermes *hw, __le16 *pda, |
| u32 pda_addr, u16 pda_len) |
| { |
| struct ezusb_priv *upriv = hw->priv; |
| struct request_context *ctx; |
| __le16 data[] = { |
| cpu_to_le16(pda_addr & 0xffff), |
| cpu_to_le16(pda_len - 4) |
| }; |
| ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_READ_PDA, EZUSB_RID_READ_PDA); |
| if (!ctx) |
| return -ENOMEM; |
| |
| /* wl_lkm does not include PDA size in the PDA area. |
| * We will pad the information into pda, so other routines |
| * don't have to be modified */ |
| pda[0] = cpu_to_le16(pda_len - 2); |
| /* Includes CFG_PROD_DATA but not itself */ |
| pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */ |
| |
| return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, |
| EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4, |
| NULL); |
| } |
| |
| static int ezusb_program_init(struct hermes *hw, u32 entry_point) |
| { |
| struct ezusb_priv *upriv = hw->priv; |
| struct request_context *ctx; |
| __le32 data = cpu_to_le32(entry_point); |
| |
| ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_INIT, 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_program_end(struct hermes *hw) |
| { |
| struct ezusb_priv *upriv = hw->priv; |
| struct request_context *ctx; |
| |
| ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_END, EZUSB_RID_ACK); |
| if (!ctx) |
| return -ENOMEM; |
| |
| return ezusb_access_ltv(upriv, ctx, 0, NULL, |
| EZUSB_FRAME_CONTROL, NULL, 0, NULL); |
| } |
| |
| static int ezusb_program_bytes(struct hermes *hw, const char *buf, |
| u32 addr, u32 len) |
| { |
| struct ezusb_priv *upriv = hw->priv; |
| struct request_context *ctx; |
| __le32 data = cpu_to_le32(addr); |
| int err; |
| |
| ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_SET_ADDR, EZUSB_RID_ACK); |
| if (!ctx) |
| return -ENOMEM; |
| |
| err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data, |
| EZUSB_FRAME_CONTROL, NULL, 0, NULL); |
| if (err) |
| return err; |
| |
| ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_PROG_BYTES, EZUSB_RID_ACK); |
| if (!ctx) |
| return -ENOMEM; |
| |
| return ezusb_access_ltv(upriv, ctx, len, buf, |
| EZUSB_FRAME_CONTROL, NULL, 0, NULL); |
| } |
| |
| static int ezusb_program(struct hermes *hw, const char *buf, |
| u32 addr, u32 len) |
| { |
| u32 ch_addr; |
| u32 ch_len; |
| int err = 0; |
| |
| /* We can only send 2048 bytes out of the bulk xmit at a time, |
| * so we have to split any programming into chunks of <2048 |
| * bytes. */ |
| |
| ch_len = (len < MAX_DL_SIZE) ? len : MAX_DL_SIZE; |
| ch_addr = addr; |
| |
| while (ch_addr < (addr + len)) { |
| pr_debug("Programming subblock of length %d " |
| "to address 0x%08x. Data @ %p\n", |
| ch_len, ch_addr, &buf[ch_addr - addr]); |
| |
| err = ezusb_program_bytes(hw, &buf[ch_addr - addr], |
| ch_addr, ch_len); |
| if (err) |
| break; |
| |
| ch_addr += ch_len; |
| ch_len = ((addr + len - ch_addr) < MAX_DL_SIZE) ? |
| (addr + len - ch_addr) : MAX_DL_SIZE; |
| } |
| |
| return err; |
| } |
| |
| 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; |
| u8 mic[MICHAEL_MIC_LEN + 1]; |
| int err = 0; |
| int 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: ezusb_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). */ |
| goto drop; |
| } |
| |
| /* Check packet length */ |
| if (skb->len < ETH_HLEN) |
| goto drop; |
| |
| ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0); |
| if (!ctx) |
| goto busy; |
| |
| memset(ctx->buf, 0, BULK_BUF_SIZE); |
| buf = ctx->buf->data; |
| |
| tx_control = 0; |
| |
| err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, |
| &mic[0]); |
| if (err) |
| goto drop; |
| |
| { |
| __le16 *tx_cntl = (__le16 *)buf; |
| *tx_cntl = cpu_to_le16(tx_control); |
| buf += sizeof(*tx_cntl); |
| } |
| |
| memcpy(buf, skb->data, skb->len); |
| buf += skb->len; |
| |
| if (tx_control & HERMES_TXCTRL_MIC) { |
| u8 *m = mic; |
| /* Mic has been offset so it can be copied to an even |
| * address. We're copying eveything anyway, so we |
| * don't need to copy that first byte. */ |
| if (skb->len % 2) |
| m++; |
| memcpy(buf, m, MICHAEL_MIC_LEN); |
| buf += MICHAEL_MIC_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); |
| goto busy; |
| } |
| |
| dev->trans_start = jiffies; |
| stats->tx_bytes += skb->len; |
| goto ok; |
| |
| drop: |
| stats->tx_errors++; |
| stats->tx_dropped++; |
| |
| ok: |
| orinoco_unlock(priv, &flags); |
| dev_kfree_skb(skb); |
| return NETDEV_TX_OK; |
| |
| busy: |
| 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(struct hermes *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); |
| struct hermes *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 && upriv->read_urb->status == -EINPROGRESS) |
| printk(KERN_ERR PFX "Some URB in progress\n"); |
| |
| mutex_unlock(&upriv->mtx); |
| |
| if (upriv->read_urb) { |
| kfree(upriv->read_urb->transfer_buffer); |
| usb_free_urb(upriv->read_urb); |
| } |
| kfree(upriv->bap_buf); |
| 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, |
| .read_pda = ezusb_read_pda, |
| .program_init = ezusb_program_init, |
| .program_end = ezusb_program_end, |
| .program = ezusb_program, |
| .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_rx_mode = 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; |
| struct hermes *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, |
| }; |
| |
| module_usb_driver(orinoco_driver); |
| |
| MODULE_AUTHOR("Manuel Estrada Sainz"); |
| MODULE_DESCRIPTION("Driver for Orinoco wireless LAN cards using EZUSB bridge"); |
| MODULE_LICENSE("Dual MPL/GPL"); |