1755 lines
45 KiB
C
1755 lines
45 KiB
C
/*
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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 (greg@kroah.com)
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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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#define DRIVER_NAME "orinoco_usb"
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#define PFX DRIVER_NAME ": "
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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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#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 "mic.h"
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#include "orinoco.h"
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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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/* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */
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static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
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#define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2)
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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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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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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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/* 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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MODULE_FIRMWARE("orinoco_ezusb_fw");
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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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#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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#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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#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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#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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#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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#define USB_ELSA_VENDOR_ID 0x05CC
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#define USB_ELSA_AIRLANCER_ID 0x3100 /* ELSA AirLancer USB-11 */
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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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#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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#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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#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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#define USB_2WIRE_VENDOR_ID 0x1630
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#define USB_2WIRE_WIRELESS_ID 0xff81 /* 2Wire Wireless USB adapter */
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#define EZUSB_REQUEST_FW_TRANS 0xA0
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#define EZUSB_REQUEST_TRIGER 0xAA
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#define EZUSB_REQUEST_TRIG_AC 0xAC
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#define EZUSB_CPUCS_REG 0x7F92
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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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/* Recognize info frames */
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#define EZUSB_IS_INFO(id) ((id >= 0xF000) && (id <= 0xF2FF))
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#define EZUSB_MAGIC 0x0210
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#define EZUSB_FRAME_DATA 1
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#define EZUSB_FRAME_CONTROL 2
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#define DEF_TIMEOUT (3 * HZ)
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#define BULK_BUF_SIZE 2048
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#define MAX_DL_SIZE (BULK_BUF_SIZE - sizeof(struct ezusb_packet))
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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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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[0];
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} __packed;
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/* Table of devices that work or may work with this driver */
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static 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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MODULE_DEVICE_TABLE(usb, ezusb_table);
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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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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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struct request_context {
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struct list_head list;
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atomic_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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/* 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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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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static void ezusb_request_context_put(struct request_context *ctx)
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{
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if (!atomic_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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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(u_long _ctx)
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{
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struct request_context *ctx = (void *) _ctx;
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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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atomic_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)
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return NULL;
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ctx->buf = kmalloc(BULK_BUF_SIZE, GFP_ATOMIC);
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if (!ctx->buf) {
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kfree(ctx);
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return NULL;
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}
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ctx->outurb = usb_alloc_urb(0, GFP_ATOMIC);
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if (!ctx->outurb) {
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kfree(ctx->buf);
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kfree(ctx);
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return NULL;
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}
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ctx->upriv = upriv;
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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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atomic_set(&ctx->refcount, 1);
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init_completion(&ctx->done);
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init_timer(&ctx->timer);
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ctx->timer.function = ezusb_request_timerfn;
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ctx->timer.data = (u_long) ctx;
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return ctx;
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}
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|
|
|
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/* Hopefully the real complete_all will soon be exported, in the mean
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* while this should work. */
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static inline void ezusb_complete_all(struct completion *comp)
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{
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complete(comp);
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complete(comp);
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complete(comp);
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complete(comp);
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}
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|
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static void ezusb_ctx_complete(struct request_context *ctx)
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{
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struct ezusb_priv *upriv = ctx->upriv;
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unsigned long flags;
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|
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spin_lock_irqsave(&upriv->req_lock, flags);
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|
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list_del_init(&ctx->list);
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if (upriv->udev) {
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spin_unlock_irqrestore(&upriv->req_lock, flags);
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ezusb_req_queue_run(upriv);
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spin_lock_irqsave(&upriv->req_lock, flags);
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}
|
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|
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switch (ctx->state) {
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case EZUSB_CTX_COMPLETE:
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case EZUSB_CTX_REQSUBMIT_FAIL:
|
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case EZUSB_CTX_REQ_FAILED:
|
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case EZUSB_CTX_REQ_TIMEOUT:
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case EZUSB_CTX_RESP_TIMEOUT:
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spin_unlock_irqrestore(&upriv->req_lock, flags);
|
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|
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if ((ctx->out_rid == EZUSB_RID_TX) && upriv->dev) {
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struct net_device *dev = upriv->dev;
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struct orinoco_private *priv = ndev_priv(dev);
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struct net_device_stats *stats = &priv->stats;
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if (ctx->state != EZUSB_CTX_COMPLETE)
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stats->tx_errors++;
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else
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stats->tx_packets++;
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|
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netif_wake_queue(dev);
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}
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ezusb_complete_all(&ctx->done);
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ezusb_request_context_put(ctx);
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break;
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default:
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spin_unlock_irqrestore(&upriv->req_lock, flags);
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if (!upriv->udev) {
|
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/* This is normal, as all request contexts get flushed
|
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* when the device is disconnected */
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err("Called, CTX not terminating, but device gone");
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ezusb_complete_all(&ctx->done);
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ezusb_request_context_put(ctx);
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break;
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}
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err("Called, CTX not in terminating state.");
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/* Things are really bad if this happens. Just leak
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* the CTX because it may still be linked to the
|
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* queue or the OUT urb may still be active.
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* Just leaking at least prevents an Oops or Panic.
|
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*/
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break;
|
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}
|
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}
|
|
|
|
/**
|
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* ezusb_req_queue_run:
|
|
* Description:
|
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* 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)
|
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{
|
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unsigned long flags;
|
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struct request_context *ctx;
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int result;
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|
|
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spin_lock_irqsave(&upriv->req_lock, flags);
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|
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if (!list_empty(&upriv->req_active))
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goto unlock;
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|
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if (list_empty(&upriv->req_pending))
|
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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;
|
|
}
|
|
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_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) {
|
|
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)
|
|
{
|
|
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;
|
|
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)
|
|
{
|
|
int req_size;
|
|
int retval = 0;
|
|
enum ezusb_state state;
|
|
|
|
BUG_ON(in_irq());
|
|
|
|
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_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;
|
|
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)
|
|
{
|
|
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 % 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),
|
|
};
|
|
netdev_dbg(upriv->dev,
|
|
"0x%04X, parm0 0x%04X, parm1 0x%04X, parm2 0x%04X\n", 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,
|
|
};
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
netdev_dbg(upriv->dev, "sending control message\n");
|
|
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)
|
|
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)) {
|
|
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 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 = NULL;
|
|
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) {
|
|
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__);
|
|
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");
|