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1787 lines
45 KiB
1787 lines
45 KiB
/* |
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* USB Orinoco driver |
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* |
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* Copyright (c) 2003 Manuel Estrada Sainz |
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* |
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* The contents of this file are subject to the Mozilla Public License |
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* Version 1.1 (the "License"); you may not use this file except in |
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* compliance with the License. You may obtain a copy of the License |
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* at http://www.mozilla.org/MPL/ |
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* |
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* Software distributed under the License is distributed on an "AS IS" |
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See |
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* the License for the specific language governing rights and |
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* limitations under the License. |
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* |
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* Alternatively, the contents of this file may be used under the |
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* terms of the GNU General Public License version 2 (the "GPL"), in |
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* which case the provisions of the GPL are applicable instead of the |
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* above. If you wish to allow the use of your version of this file |
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* only under the terms of the GPL and not to allow others to use your |
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* version of this file under the MPL, indicate your decision by |
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* deleting the provisions above and replace them with the notice and |
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* other provisions required by the GPL. If you do not delete the |
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* provisions above, a recipient may use your version of this file |
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* under either the MPL or the GPL. |
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* |
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* Queueing code based on linux-wlan-ng 0.2.1-pre5 |
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* |
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* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. |
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* |
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* The license is the same as above. |
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* |
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* Initialy based on USB Skeleton driver - 0.7 |
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* |
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* Copyright (c) 2001 Greg Kroah-Hartman ([email protected]) |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* NOTE: The original USB Skeleton driver is GPL, but all that code is |
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* gone so MPL/GPL applies. |
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*/ |
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|
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#define DRIVER_NAME "orinoco_usb" |
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#define PFX DRIVER_NAME ": " |
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|
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/sched.h> |
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#include <linux/signal.h> |
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#include <linux/errno.h> |
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#include <linux/poll.h> |
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#include <linux/slab.h> |
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#include <linux/fcntl.h> |
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#include <linux/spinlock.h> |
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#include <linux/list.h> |
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#include <linux/usb.h> |
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#include <linux/timer.h> |
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|
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#include <linux/netdevice.h> |
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#include <linux/if_arp.h> |
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#include <linux/etherdevice.h> |
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#include <linux/wireless.h> |
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#include <linux/firmware.h> |
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#include <linux/refcount.h> |
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|
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#include "mic.h" |
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#include "orinoco.h" |
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|
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#ifndef URB_ASYNC_UNLINK |
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#define URB_ASYNC_UNLINK 0 |
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#endif |
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|
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struct header_struct { |
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/* 802.3 */ |
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u8 dest[ETH_ALEN]; |
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u8 src[ETH_ALEN]; |
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__be16 len; |
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/* 802.2 */ |
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u8 dsap; |
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u8 ssap; |
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u8 ctrl; |
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/* SNAP */ |
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u8 oui[3]; |
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__be16 ethertype; |
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} __packed; |
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|
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struct ez_usb_fw { |
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u16 size; |
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const u8 *code; |
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}; |
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|
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static struct ez_usb_fw firmware = { |
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.size = 0, |
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.code = NULL, |
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}; |
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|
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/* Debugging macros */ |
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#undef err |
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#define err(format, arg...) \ |
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do { printk(KERN_ERR PFX format "\n", ## arg); } while (0) |
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|
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MODULE_FIRMWARE("orinoco_ezusb_fw"); |
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|
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/* |
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* Under some conditions, the card gets stuck and stops paying attention |
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* to the world (i.e. data communication stalls) until we do something to |
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* it. Sending an INQ_TALLIES command seems to be enough and should be |
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* harmless otherwise. This behaviour has been observed when using the |
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* driver on a systemimager client during installation. In the past a |
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* timer was used to send INQ_TALLIES commands when there was no other |
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* activity, but it was troublesome and was removed. |
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*/ |
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|
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#define USB_COMPAQ_VENDOR_ID 0x049f /* Compaq Computer Corp. */ |
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#define USB_COMPAQ_WL215_ID 0x001f /* Compaq WL215 USB Adapter */ |
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#define USB_COMPAQ_W200_ID 0x0076 /* Compaq W200 USB Adapter */ |
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#define USB_HP_WL215_ID 0x0082 /* Compaq WL215 USB Adapter */ |
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|
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#define USB_MELCO_VENDOR_ID 0x0411 |
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#define USB_BUFFALO_L11_ID 0x0006 /* BUFFALO WLI-USB-L11 */ |
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#define USB_BUFFALO_L11G_WR_ID 0x000B /* BUFFALO WLI-USB-L11G-WR */ |
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#define USB_BUFFALO_L11G_ID 0x000D /* BUFFALO WLI-USB-L11G */ |
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|
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#define USB_LUCENT_VENDOR_ID 0x047E /* Lucent Technologies */ |
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#define USB_LUCENT_ORINOCO_ID 0x0300 /* Lucent/Agere Orinoco USB Client */ |
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|
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#define USB_AVAYA8_VENDOR_ID 0x0D98 |
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#define USB_AVAYAE_VENDOR_ID 0x0D9E |
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#define USB_AVAYA_WIRELESS_ID 0x0300 /* Avaya Wireless USB Card */ |
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|
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#define USB_AGERE_VENDOR_ID 0x0D4E /* Agere Systems */ |
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#define USB_AGERE_MODEL0801_ID 0x1000 /* Wireless USB Card Model 0801 */ |
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#define USB_AGERE_MODEL0802_ID 0x1001 /* Wireless USB Card Model 0802 */ |
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#define USB_AGERE_REBRANDED_ID 0x047A /* WLAN USB Card */ |
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|
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#define USB_ELSA_VENDOR_ID 0x05CC |
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#define USB_ELSA_AIRLANCER_ID 0x3100 /* ELSA AirLancer USB-11 */ |
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|
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#define USB_LEGEND_VENDOR_ID 0x0E7C |
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#define USB_LEGEND_JOYNET_ID 0x0300 /* Joynet WLAN USB Card */ |
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|
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#define USB_SAMSUNG_VENDOR_ID 0x04E8 |
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#define USB_SAMSUNG_SEW2001U1_ID 0x5002 /* Samsung SEW-2001u Card */ |
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#define USB_SAMSUNG_SEW2001U2_ID 0x5B11 /* Samsung SEW-2001u Card */ |
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#define USB_SAMSUNG_SEW2003U_ID 0x7011 /* Samsung SEW-2003U Card */ |
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|
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#define USB_IGATE_VENDOR_ID 0x0681 |
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#define USB_IGATE_IGATE_11M_ID 0x0012 /* I-GATE 11M USB Card */ |
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|
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#define USB_FUJITSU_VENDOR_ID 0x0BF8 |
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#define USB_FUJITSU_E1100_ID 0x1002 /* connect2AIR WLAN E-1100 USB */ |
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|
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#define USB_2WIRE_VENDOR_ID 0x1630 |
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#define USB_2WIRE_WIRELESS_ID 0xff81 /* 2Wire Wireless USB adapter */ |
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|
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#define EZUSB_REQUEST_FW_TRANS 0xA0 |
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#define EZUSB_REQUEST_TRIGGER 0xAA |
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#define EZUSB_REQUEST_TRIG_AC 0xAC |
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#define EZUSB_CPUCS_REG 0x7F92 |
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|
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#define EZUSB_RID_TX 0x0700 |
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#define EZUSB_RID_RX 0x0701 |
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#define EZUSB_RID_INIT1 0x0702 |
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#define EZUSB_RID_ACK 0x0710 |
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#define EZUSB_RID_READ_PDA 0x0800 |
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#define EZUSB_RID_PROG_INIT 0x0852 |
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#define EZUSB_RID_PROG_SET_ADDR 0x0853 |
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#define EZUSB_RID_PROG_BYTES 0x0854 |
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#define EZUSB_RID_PROG_END 0x0855 |
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#define EZUSB_RID_DOCMD 0x0860 |
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|
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/* Recognize info frames */ |
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#define EZUSB_IS_INFO(id) ((id >= 0xF000) && (id <= 0xF2FF)) |
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|
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#define EZUSB_MAGIC 0x0210 |
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|
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#define EZUSB_FRAME_DATA 1 |
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#define EZUSB_FRAME_CONTROL 2 |
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|
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#define DEF_TIMEOUT (3 * HZ) |
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|
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#define BULK_BUF_SIZE 2048 |
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|
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#define MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet)) |
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|
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#define FW_BUF_SIZE 64 |
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#define FW_VAR_OFFSET_PTR 0x359 |
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#define FW_VAR_VALUE 0 |
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#define FW_HOLE_START 0x100 |
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#define FW_HOLE_END 0x300 |
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|
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struct ezusb_packet { |
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__le16 magic; /* 0x0210 */ |
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u8 req_reply_count; |
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u8 ans_reply_count; |
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__le16 frame_type; /* 0x01 for data frames, 0x02 otherwise */ |
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__le16 size; /* transport size */ |
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__le16 crc; /* CRC up to here */ |
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__le16 hermes_len; |
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__le16 hermes_rid; |
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u8 data[]; |
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} __packed; |
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|
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/* Table of devices that work or may work with this driver */ |
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static const struct usb_device_id ezusb_table[] = { |
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{USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_WL215_ID)}, |
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{USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_HP_WL215_ID)}, |
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{USB_DEVICE(USB_COMPAQ_VENDOR_ID, USB_COMPAQ_W200_ID)}, |
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{USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11_ID)}, |
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{USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_WR_ID)}, |
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{USB_DEVICE(USB_MELCO_VENDOR_ID, USB_BUFFALO_L11G_ID)}, |
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{USB_DEVICE(USB_LUCENT_VENDOR_ID, USB_LUCENT_ORINOCO_ID)}, |
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{USB_DEVICE(USB_AVAYA8_VENDOR_ID, USB_AVAYA_WIRELESS_ID)}, |
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{USB_DEVICE(USB_AVAYAE_VENDOR_ID, USB_AVAYA_WIRELESS_ID)}, |
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{USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0801_ID)}, |
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{USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_MODEL0802_ID)}, |
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{USB_DEVICE(USB_ELSA_VENDOR_ID, USB_ELSA_AIRLANCER_ID)}, |
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{USB_DEVICE(USB_LEGEND_VENDOR_ID, USB_LEGEND_JOYNET_ID)}, |
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{USB_DEVICE_VER(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U1_ID, |
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0, 0)}, |
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{USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2001U2_ID)}, |
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{USB_DEVICE(USB_SAMSUNG_VENDOR_ID, USB_SAMSUNG_SEW2003U_ID)}, |
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{USB_DEVICE(USB_IGATE_VENDOR_ID, USB_IGATE_IGATE_11M_ID)}, |
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{USB_DEVICE(USB_FUJITSU_VENDOR_ID, USB_FUJITSU_E1100_ID)}, |
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{USB_DEVICE(USB_2WIRE_VENDOR_ID, USB_2WIRE_WIRELESS_ID)}, |
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{USB_DEVICE(USB_AGERE_VENDOR_ID, USB_AGERE_REBRANDED_ID)}, |
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{} /* Terminating entry */ |
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}; |
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|
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MODULE_DEVICE_TABLE(usb, ezusb_table); |
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|
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/* Structure to hold all of our device specific stuff */ |
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struct ezusb_priv { |
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struct usb_device *udev; |
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struct net_device *dev; |
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struct mutex mtx; |
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spinlock_t req_lock; |
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struct list_head req_pending; |
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struct list_head req_active; |
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spinlock_t reply_count_lock; |
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u16 hermes_reg_fake[0x40]; |
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u8 *bap_buf; |
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struct urb *read_urb; |
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int read_pipe; |
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int write_pipe; |
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u8 reply_count; |
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}; |
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|
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enum ezusb_state { |
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EZUSB_CTX_START, |
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EZUSB_CTX_QUEUED, |
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EZUSB_CTX_REQ_SUBMITTED, |
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EZUSB_CTX_REQ_COMPLETE, |
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EZUSB_CTX_RESP_RECEIVED, |
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EZUSB_CTX_REQ_TIMEOUT, |
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EZUSB_CTX_REQ_FAILED, |
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EZUSB_CTX_RESP_TIMEOUT, |
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EZUSB_CTX_REQSUBMIT_FAIL, |
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EZUSB_CTX_COMPLETE, |
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}; |
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|
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struct request_context { |
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struct list_head list; |
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refcount_t refcount; |
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struct completion done; /* Signals that CTX is dead */ |
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int killed; |
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struct urb *outurb; /* OUT for req pkt */ |
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struct ezusb_priv *upriv; |
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struct ezusb_packet *buf; |
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int buf_length; |
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struct timer_list timer; /* Timeout handling */ |
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enum ezusb_state state; /* Current state */ |
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/* the RID that we will wait for */ |
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u16 out_rid; |
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u16 in_rid; |
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}; |
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|
|
|
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/* Forward declarations */ |
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static void ezusb_ctx_complete(struct request_context *ctx); |
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static void ezusb_req_queue_run(struct ezusb_priv *upriv); |
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static void ezusb_bulk_in_callback(struct urb *urb); |
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|
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static inline u8 ezusb_reply_inc(u8 count) |
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{ |
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if (count < 0x7F) |
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return count + 1; |
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else |
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return 1; |
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} |
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|
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static void ezusb_request_context_put(struct request_context *ctx) |
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{ |
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if (!refcount_dec_and_test(&ctx->refcount)) |
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return; |
|
|
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WARN_ON(!ctx->done.done); |
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BUG_ON(ctx->outurb->status == -EINPROGRESS); |
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BUG_ON(timer_pending(&ctx->timer)); |
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usb_free_urb(ctx->outurb); |
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kfree(ctx->buf); |
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kfree(ctx); |
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} |
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|
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static inline void ezusb_mod_timer(struct ezusb_priv *upriv, |
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struct timer_list *timer, |
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unsigned long expire) |
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{ |
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if (!upriv->udev) |
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return; |
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mod_timer(timer, expire); |
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} |
|
|
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static void ezusb_request_timerfn(struct timer_list *t) |
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{ |
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struct request_context *ctx = from_timer(ctx, t, timer); |
|
|
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ctx->outurb->transfer_flags |= URB_ASYNC_UNLINK; |
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if (usb_unlink_urb(ctx->outurb) == -EINPROGRESS) { |
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ctx->state = EZUSB_CTX_REQ_TIMEOUT; |
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} else { |
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ctx->state = EZUSB_CTX_RESP_TIMEOUT; |
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dev_dbg(&ctx->outurb->dev->dev, "couldn't unlink\n"); |
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refcount_inc(&ctx->refcount); |
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ctx->killed = 1; |
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ezusb_ctx_complete(ctx); |
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ezusb_request_context_put(ctx); |
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} |
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}; |
|
|
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static struct request_context *ezusb_alloc_ctx(struct ezusb_priv *upriv, |
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u16 out_rid, u16 in_rid) |
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{ |
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struct request_context *ctx; |
|
|
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ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); |
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if (!ctx) |
|
return NULL; |
|
|
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ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC); |
|
if (!ctx->buf) { |
|
kfree(ctx); |
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return NULL; |
|
} |
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ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC); |
|
if (!ctx->outurb) { |
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kfree(ctx->buf); |
|
kfree(ctx); |
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return NULL; |
|
} |
|
|
|
ctx->upriv = upriv; |
|
ctx->state = EZUSB_CTX_START; |
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ctx->out_rid = out_rid; |
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ctx->in_rid = in_rid; |
|
|
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refcount_set(&ctx->refcount, 1); |
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init_completion(&ctx->done); |
|
|
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timer_setup(&ctx->timer, ezusb_request_timerfn, 0); |
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return ctx; |
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} |
|
|
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static void ezusb_ctx_complete(struct request_context *ctx) |
|
{ |
|
struct ezusb_priv *upriv = ctx->upriv; |
|
unsigned long flags; |
|
|
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spin_lock_irqsave(&upriv->req_lock, flags); |
|
|
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list_del_init(&ctx->list); |
|
if (upriv->udev) { |
|
spin_unlock_irqrestore(&upriv->req_lock, flags); |
|
ezusb_req_queue_run(upriv); |
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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 net_device_stats *stats = &dev->stats; |
|
|
|
if (ctx->state != EZUSB_CTX_COMPLETE) |
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stats->tx_errors++; |
|
else |
|
stats->tx_packets++; |
|
|
|
netif_wake_queue(dev); |
|
} |
|
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"); |
|
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) { |
|
refcount_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; |
|
} |
|
refcount_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_warn("interrupt called with dead ctx\n"); |
|
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; |
|
} |
|
fallthrough; |
|
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; |
|
fallthrough; |
|
|
|
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; |
|
} |
|
netdev_dbg(upriv->dev, "Skipped (0x%x/0x%x) (%d/%d)\n", |
|
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_warn("Matched IN URB, unexpected context state(0x%x)\n", |
|
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 */ |
|
} |
|
|
|
typedef void (*ezusb_ctx_wait)(struct ezusb_priv *, struct request_context *); |
|
|
|
static void ezusb_req_ctx_wait_compl(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: |
|
wait_for_completion(&ctx->done); |
|
break; |
|
default: |
|
/* Done or failed - nothing to wait for */ |
|
break; |
|
} |
|
} |
|
|
|
static void ezusb_req_ctx_wait_poll(struct ezusb_priv *upriv, |
|
struct request_context *ctx) |
|
{ |
|
int msecs; |
|
|
|
switch (ctx->state) { |
|
case EZUSB_CTX_QUEUED: |
|
case EZUSB_CTX_REQ_SUBMITTED: |
|
case EZUSB_CTX_REQ_COMPLETE: |
|
case EZUSB_CTX_RESP_RECEIVED: |
|
/* If we get called from a timer or with our lock acquired, then |
|
* we can't wait for the completion and have to poll. This won't |
|
* happen if the USB controller completes the URB requests in |
|
* BH. |
|
*/ |
|
msecs = DEF_TIMEOUT * (1000 / HZ); |
|
|
|
while (!try_wait_for_completion(&ctx->done) && msecs--) |
|
udelay(1000); |
|
break; |
|
default: |
|
/* Done or failed - nothing to wait for */ |
|
break; |
|
} |
|
} |
|
|
|
static void ezusb_req_ctx_wait_skip(struct ezusb_priv *upriv, |
|
struct request_context *ctx) |
|
{ |
|
WARN(1, "Shouldn't be invoked for in_rid\n"); |
|
} |
|
|
|
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) { |
|
netdev_dbg(upriv->dev, "urb busy, not resubmiting\n"); |
|
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) |
|
{ |
|
int ret; |
|
u8 *res_val = NULL; |
|
|
|
if (!upriv->udev) { |
|
err("%s: !upriv->udev", __func__); |
|
return -EFAULT; |
|
} |
|
|
|
res_val = kmalloc(sizeof(*res_val), GFP_KERNEL); |
|
|
|
if (!res_val) |
|
return -ENOMEM; |
|
|
|
*res_val = reset; /* avoid argument promotion */ |
|
|
|
ret = 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); |
|
|
|
kfree(res_val); |
|
|
|
return ret; |
|
} |
|
|
|
static int ezusb_firmware_download(struct ezusb_priv *upriv, |
|
struct ez_usb_fw *fw) |
|
{ |
|
u8 *fw_buffer; |
|
int retval, addr; |
|
int variant_offset; |
|
|
|
fw_buffer = kmalloc(FW_BUF_SIZE, GFP_KERNEL); |
|
if (!fw_buffer) { |
|
printk(KERN_ERR PFX "Out of memory for firmware buffer.\n"); |
|
return -ENOMEM; |
|
} |
|
/* |
|
* 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) { |
|
netdev_dbg(upriv->dev, |
|
"Patching card_variant byte at 0x%04X\n", |
|
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: |
|
kfree(fw_buffer); |
|
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, unsigned ans_size, u16 *ans_length, |
|
ezusb_ctx_wait ezusb_ctx_wait_func) |
|
{ |
|
int req_size; |
|
int retval = 0; |
|
enum ezusb_state state; |
|
|
|
if (!upriv->udev) { |
|
retval = -ENODEV; |
|
goto exit; |
|
} |
|
|
|
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_ctx_wait_func(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; |
|
fallthrough; |
|
default: |
|
err("%s: Unexpected context state %d", __func__, |
|
state); |
|
fallthrough; |
|
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; |
|
} |
|
if (ctx->in_rid) { |
|
struct ezusb_packet *ans = ctx->buf; |
|
unsigned 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(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, |
|
ezusb_ctx_wait ezusb_ctx_wait_func) |
|
{ |
|
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, ezusb_ctx_wait_func); |
|
} |
|
|
|
static int ezusb_write_ltv(struct hermes *hw, int bap, u16 rid, |
|
u16 length, const void *data) |
|
{ |
|
return __ezusb_write_ltv(hw, bap, rid, length, data, |
|
ezusb_req_ctx_wait_poll); |
|
} |
|
|
|
static int __ezusb_read_ltv(struct hermes *hw, int bap, u16 rid, |
|
unsigned bufsize, u16 *length, void *buf, |
|
ezusb_ctx_wait ezusb_ctx_wait_func) |
|
|
|
{ |
|
struct ezusb_priv *upriv = hw->priv; |
|
struct request_context *ctx; |
|
|
|
if (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, ezusb_req_ctx_wait_poll); |
|
} |
|
|
|
static int ezusb_read_ltv(struct hermes *hw, int bap, u16 rid, |
|
unsigned bufsize, u16 *length, void *buf) |
|
{ |
|
return __ezusb_read_ltv(hw, bap, rid, bufsize, length, buf, |
|
ezusb_req_ctx_wait_poll); |
|
} |
|
|
|
static int ezusb_read_ltv_preempt(struct hermes *hw, int bap, u16 rid, |
|
unsigned bufsize, u16 *length, void *buf) |
|
{ |
|
return __ezusb_read_ltv(hw, bap, rid, bufsize, length, buf, |
|
ezusb_req_ctx_wait_compl); |
|
} |
|
|
|
static int ezusb_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1, |
|
u16 parm2, struct hermes_response *resp) |
|
{ |
|
WARN_ON_ONCE(1); |
|
return -EINVAL; |
|
} |
|
|
|
static int __ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, |
|
struct hermes_response *resp, |
|
ezusb_ctx_wait ezusb_ctx_wait_func) |
|
{ |
|
struct ezusb_priv *upriv = hw->priv; |
|
struct request_context *ctx; |
|
|
|
__le16 data[4] = { |
|
cpu_to_le16(cmd), |
|
cpu_to_le16(parm0), |
|
0, |
|
0, |
|
}; |
|
netdev_dbg(upriv->dev, "0x%04X, parm0 0x%04X\n", 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, |
|
ezusb_ctx_wait_func); |
|
} |
|
|
|
static int ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, |
|
struct hermes_response *resp) |
|
{ |
|
return __ezusb_docmd_wait(hw, cmd, parm0, resp, ezusb_req_ctx_wait_poll); |
|
} |
|
|
|
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, ezusb_req_ctx_wait_compl); |
|
} |
|
|
|
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, |
|
ezusb_req_ctx_wait_compl); |
|
} |
|
|
|
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, |
|
ezusb_req_ctx_wait_compl); |
|
} |
|
|
|
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, |
|
ezusb_req_ctx_wait_compl); |
|
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, |
|
ezusb_req_ctx_wait_compl); |
|
} |
|
|
|
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 = &dev->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; |
|
|
|
tx_control = 0; |
|
|
|
err = orinoco_process_xmit_skb(skb, dev, priv, &tx_control, |
|
&mic[0]); |
|
if (err) |
|
goto drop; |
|
|
|
ctx = ezusb_alloc_ctx(upriv, EZUSB_RID_TX, 0); |
|
if (!ctx) |
|
goto drop; |
|
|
|
memset(ctx->buf, 0, BULK_BUF_SIZE); |
|
buf = ctx->buf->data; |
|
|
|
{ |
|
__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, |
|
ezusb_req_ctx_wait_skip); |
|
|
|
if (err) { |
|
netif_start_queue(dev); |
|
if (net_ratelimit()) |
|
printk(KERN_ERR "%s: Error %d transmitting packet\n", |
|
dev->name, err); |
|
goto busy; |
|
} |
|
|
|
netif_trans_update(dev); |
|
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; |
|
} |
|
|
|
netdev_dbg(upriv->dev, "sending control message\n"); |
|
retval = usb_control_msg(upriv->udev, |
|
usb_sndctrlpipe(upriv->udev, 0), |
|
EZUSB_REQUEST_TRIGGER, |
|
USB_TYPE_VENDOR | USB_RECIP_DEVICE | |
|
USB_DIR_OUT, 0x0, 0x0, NULL, 0, |
|
DEF_TIMEOUT); |
|
if (retval < 0) { |
|
err("EZUSB_REQUEST_TRIGGER 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; |
|
|
|
if (!upriv) |
|
return -EINVAL; |
|
|
|
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", |
|
ezusb_req_ctx_wait_compl); |
|
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, |
|
ezusb_req_ctx_wait_compl); |
|
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) |
|
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_warn("%s: urb timed out, not resubmitting\n", __func__); |
|
return; |
|
} |
|
if (urb->status == -ECONNABORTED) { |
|
pr_warn("%s: connection abort, resubmitting urb\n", |
|
__func__); |
|
goto resubmit; |
|
} |
|
if ((urb->status == -EILSEQ) |
|
|| (urb->status == -ENOENT) |
|
|| (urb->status == -ECONNRESET)) { |
|
netdev_dbg(upriv->dev, "status %d, not resubmiting\n", |
|
urb->status); |
|
return; |
|
} |
|
if (urb->status) |
|
netdev_dbg(upriv->dev, "status: %d length: %d\n", |
|
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 list_head *item; |
|
struct list_head *tmp_item; |
|
unsigned long flags; |
|
|
|
BUG_ON(!upriv); |
|
|
|
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); |
|
refcount_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); |
|
wiphy_unregister(priv_to_wiphy(upriv)); |
|
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, |
|
.read_ltv_pr = ezusb_read_ltv_preempt, |
|
.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, |
|
}; |
|
|
|
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 = NULL; |
|
int retval = 0; |
|
int i; |
|
|
|
priv = alloc_orinocodev(sizeof(*upriv), &udev->dev, |
|
ezusb_hard_reset, NULL); |
|
if (!priv) { |
|
err("Couldn't allocate orinocodev"); |
|
retval = -ENOMEM; |
|
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->cur_altsetting->desc; |
|
for (i = 0; i < iface_desc->bNumEndpoints; ++i) { |
|
ep = &interface->cur_altsetting->endpoint[i].desc; |
|
|
|
if (usb_endpoint_is_bulk_in(ep)) { |
|
/* we found a bulk in endpoint */ |
|
if (upriv->read_urb != NULL) { |
|
pr_warn("Found a second bulk in ep, ignored\n"); |
|
continue; |
|
} |
|
|
|
upriv->read_urb = usb_alloc_urb(0, GFP_KERNEL); |
|
if (!upriv->read_urb) |
|
goto error; |
|
if (le16_to_cpu(ep->wMaxPacketSize) != 64) |
|
pr_warn("bulk in: wMaxPacketSize!= 64\n"); |
|
if (ep->bEndpointAddress != (2 | USB_DIR_IN)) |
|
pr_warn("bulk in: bEndpointAddress: %d\n", |
|
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 (usb_endpoint_is_bulk_out(ep)) { |
|
/* we found a bulk out endpoint */ |
|
if (upriv->bap_buf != NULL) { |
|
pr_warn("Found a second bulk out ep, ignored\n"); |
|
continue; |
|
} |
|
|
|
if (le16_to_cpu(ep->wMaxPacketSize) != 64) |
|
pr_warn("bulk out: wMaxPacketSize != 64\n"); |
|
if (ep->bEndpointAddress != 2) |
|
pr_warn("bulk out: bEndpointAddress: %d\n", |
|
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) { |
|
if (ezusb_firmware_download(upriv, &firmware) < 0) |
|
goto error; |
|
} 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__); |
|
wiphy_unregister(priv_to_wiphy(priv)); |
|
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, |
|
.disable_hub_initiated_lpm = 1, |
|
}; |
|
|
|
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");
|
|
|