Date: Fri, 23 Jan 2009 05:04:50 +0000 (UTC) From: Weongyo Jeong <weongyo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r187610 - in head: share/man/man4 sys/dev/usb sys/modules/urtw Message-ID: <200901230504.n0N54oD8031697@svn.freebsd.org>
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Author: weongyo Date: Fri Jan 23 05:04:49 2009 New Revision: 187610 URL: http://svn.freebsd.org/changeset/base/187610 Log: Add a new USB wireless driver, urtw(4) for supporting Realtek's 8187L chipset. Added: head/share/man/man4/urtw.4 (contents, props changed) head/sys/dev/usb/if_urtw.c (contents, props changed) head/sys/dev/usb/if_urtwreg.h (contents, props changed) head/sys/dev/usb/if_urtwvar.h (contents, props changed) head/sys/modules/urtw/ head/sys/modules/urtw/Makefile (contents, props changed) Modified: head/sys/dev/usb/usbdevs Added: head/share/man/man4/urtw.4 ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/share/man/man4/urtw.4 Fri Jan 23 05:04:49 2009 (r187610) @@ -0,0 +1,118 @@ +.\" Copyright (c) 2008 Weongyo Jeong +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd November 15 2008 $ +.Dt URTW 4 +.Os +.Sh NAME +.Nm urtw +.Nd Realtek RTL8187L USB IEEE 802.11b/g wireless network device +.Sh SYNOPSIS +To compile this driver into the kernel, +place the following lines in your kernel configuration file: +.Bd -ragged -offset indent +.Cd "device ehci" +.Cd "device uhci" +.Cd "device ohci" +.Cd "device usb" +.Cd "device urtw" +.Cd "device wlan" +.Ed +.Pp +Alternatively, to load the driver as a module at boot time, +place the following line in +.Xr loader.conf 5 : +.Bd -literal -offset indent +if_urtw_load="YES" +.Ed +.Sh DESCRIPTION +The +.Nm +driver supports USB 802.11b/g wireless adapters based on the +Realtek RTL8187L. +.Pp +.Nm +supports +.Cm station +and +.Cm monitor +mode operation. +Only one virtual interface may be configured at any time. +For more information on configuring this device, see +.Xr ifconfig 8 . +.Sh HARDWARE +The following adapters should work: +.Pp +.Bl -column "Card " "Radio " "Bus" -compact -offset 6n +.It Em "Card Radio Bus" +.It Li "Netgear WG111v2" Ta RTL8225 Ta USB +.It Li "Safehome WLG-1500SMA5" Ta RTL8225 Ta USB +.It Li "Shuttle XPC Accessory PN20" Ta RTL8225 Ta USB +.El +.Sh EXAMPLES +Join an existing BSS network (i.e., connect to an access point): +.Pp +.Bd -literal -offset indent +ifconfig wlan create wlandev urtw0 inet 192.168.0.20 \e + netmask 0xffffff00 +.Ed +.Pp +Join a specific BSS network with network name +.Dq Li my_net : +.Pp +.Dl "ifconfig wlan create wlandev urtw0 ssid my_net up" +.Pp +Join a specific BSS network with 64-bit WEP encryption: +.Bd -literal -offset indent +ifconfig wlan create wlandev urtw0 ssid my_net \e + wepmode on wepkey 0x1234567890 weptxkey 1 up +.Ed +.Sh SEE ALSO +.Xr intro 4 , +.Xr netintro 4 , +.Xr usb 4 , +.Xr wlan 4 , +.Xr wlan_ccmp 4 , +.Xr wlan_tkip 4 , +.Xr wlan_wep 4 , +.Xr ifconfig 8 , +.Xr wpa_supplicant 8 +.Rs +.%T Realtek +.%O http://www.realtek.com.tw +.Re +.Sh HISTORY +The +.Nm +device driver first appeared in +.Fx 8.0 . +.Sh AUTHORS +.An -nosplit +The +.Nm +driver was written by +.An Weongyo Jeong +.Aq weongyo@FreeBSD.org . Added: head/sys/dev/usb/if_urtw.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/usb/if_urtw.c Fri Jan 23 05:04:49 2009 (r187610) @@ -0,0 +1,3324 @@ +/*- + * Copyright (c) 2008 Weongyo Jeong <weongyo@FreeBSD.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); +#include <sys/param.h> +#include <sys/sockio.h> +#include <sys/sysctl.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/mbuf.h> +#include <sys/kernel.h> +#include <sys/socket.h> +#include <sys/systm.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/bus.h> +#include <sys/endian.h> +#include <sys/kdb.h> + +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <net/bpf.h> +#include <net/if.h> +#include <net/if_arp.h> +#include <net/ethernet.h> +#include <net/if_dl.h> +#include <net/if_media.h> +#include <net/if_types.h> + +#ifdef INET +#include <netinet/in.h> +#include <netinet/in_systm.h> +#include <netinet/in_var.h> +#include <netinet/if_ether.h> +#include <netinet/ip.h> +#endif + +#include <net80211/ieee80211_var.h> +#include <net80211/ieee80211_regdomain.h> +#include <net80211/ieee80211_radiotap.h> + +#include <dev/usb/usb.h> +#include <dev/usb/usbdi.h> +#include <dev/usb/usbdi_util.h> +#include "usbdevs.h" + +#include <dev/usb/if_urtwreg.h> +#include <dev/usb/if_urtwvar.h> + +SYSCTL_NODE(_hw_usb, OID_AUTO, urtw, CTLFLAG_RW, 0, "USB Realtek 8187L"); +#ifdef URTW_DEBUG +int urtw_debug = 0; +SYSCTL_INT(_hw_usb_urtw, OID_AUTO, debug, CTLFLAG_RW, &urtw_debug, 0, + "control debugging printfs"); +TUNABLE_INT("hw.usb.urtw.debug", &urtw_debug); +enum { + URTW_DEBUG_XMIT = 0x00000001, /* basic xmit operation */ + URTW_DEBUG_RECV = 0x00000002, /* basic recv operation */ + URTW_DEBUG_RESET = 0x00000004, /* reset processing */ + URTW_DEBUG_TX_PROC = 0x00000008, /* tx ISR proc */ + URTW_DEBUG_RX_PROC = 0x00000010, /* rx ISR proc */ + URTW_DEBUG_STATE = 0x00000020, /* 802.11 state transitions */ + URTW_DEBUG_STAT = 0x00000040, /* statistic */ + URTW_DEBUG_ANY = 0xffffffff +}; +#define DPRINTF(sc, m, fmt, ...) do { \ + if (sc->sc_debug & (m)) \ + printf(fmt, __VA_ARGS__); \ +} while (0) +#else +#define DPRINTF(sc, m, fmt, ...) do { \ + (void) sc; \ +} while (0) +#endif +int urtw_preamble_mode = URTW_PREAMBLE_MODE_LONG; +SYSCTL_INT(_hw_usb_urtw, OID_AUTO, preamble_mode, CTLFLAG_RW, + &urtw_preamble_mode, 0, "set the preable mode (long or short)"); +TUNABLE_INT("hw.usb.urtw.preamble_mode", &urtw_preamble_mode); + +/* recognized device vendors/products */ +static const struct usb_devno urtw_devs[] = { +#define URTW_DEV(v,p) { USB_VENDOR_##v, USB_PRODUCT_##v##_##p } + URTW_DEV(REALTEK, RTL8187), + URTW_DEV(NETGEAR, WG111V2) +#undef URTW_DEV +}; + +#define urtw_read8_m(sc, val, data) do { \ + error = urtw_read8_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) +#define urtw_write8_m(sc, val, data) do { \ + error = urtw_write8_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) +#define urtw_read16_m(sc, val, data) do { \ + error = urtw_read16_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) +#define urtw_write16_m(sc, val, data) do { \ + error = urtw_write16_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) +#define urtw_read32_m(sc, val, data) do { \ + error = urtw_read32_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) +#define urtw_write32_m(sc, val, data) do { \ + error = urtw_write32_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) +#define urtw_8187_write_phy_ofdm(sc, val, data) do { \ + error = urtw_8187_write_phy_ofdm_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) +#define urtw_8187_write_phy_cck(sc, val, data) do { \ + error = urtw_8187_write_phy_cck_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) +#define urtw_8225_write(sc, val, data) do { \ + error = urtw_8225_write_c(sc, val, data); \ + if (error != 0) \ + goto fail; \ +} while (0) + +struct urtw_pair { + uint32_t reg; + uint32_t val; +}; + +static uint8_t urtw_8225_agc[] = { + 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9e, 0x9d, 0x9c, 0x9b, + 0x9a, 0x99, 0x98, 0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91, 0x90, + 0x8f, 0x8e, 0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88, 0x87, 0x86, 0x85, + 0x84, 0x83, 0x82, 0x81, 0x80, 0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, + 0x39, 0x38, 0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30, 0x2f, + 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28, 0x27, 0x26, 0x25, 0x24, + 0x23, 0x22, 0x21, 0x20, 0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, + 0x18, 0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0x0e, + 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, + 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 +}; + +static uint32_t urtw_8225_channel[] = { + 0x0000, /* dummy channel 0 */ + 0x085c, /* 1 */ + 0x08dc, /* 2 */ + 0x095c, /* 3 */ + 0x09dc, /* 4 */ + 0x0a5c, /* 5 */ + 0x0adc, /* 6 */ + 0x0b5c, /* 7 */ + 0x0bdc, /* 8 */ + 0x0c5c, /* 9 */ + 0x0cdc, /* 10 */ + 0x0d5c, /* 11 */ + 0x0ddc, /* 12 */ + 0x0e5c, /* 13 */ + 0x0f72, /* 14 */ +}; + +static uint8_t urtw_8225_gain[] = { + 0x23, 0x88, 0x7c, 0xa5, /* -82dbm */ + 0x23, 0x88, 0x7c, 0xb5, /* -82dbm */ + 0x23, 0x88, 0x7c, 0xc5, /* -82dbm */ + 0x33, 0x80, 0x79, 0xc5, /* -78dbm */ + 0x43, 0x78, 0x76, 0xc5, /* -74dbm */ + 0x53, 0x60, 0x73, 0xc5, /* -70dbm */ + 0x63, 0x58, 0x70, 0xc5, /* -66dbm */ +}; + +static struct urtw_pair urtw_8225_rf_part1[] = { + { 0x00, 0x0067 }, { 0x01, 0x0fe0 }, { 0x02, 0x044d }, { 0x03, 0x0441 }, + { 0x04, 0x0486 }, { 0x05, 0x0bc0 }, { 0x06, 0x0ae6 }, { 0x07, 0x082a }, + { 0x08, 0x001f }, { 0x09, 0x0334 }, { 0x0a, 0x0fd4 }, { 0x0b, 0x0391 }, + { 0x0c, 0x0050 }, { 0x0d, 0x06db }, { 0x0e, 0x0029 }, { 0x0f, 0x0914 }, +}; + +static struct urtw_pair urtw_8225_rf_part2[] = { + { 0x00, 0x01 }, { 0x01, 0x02 }, { 0x02, 0x42 }, { 0x03, 0x00 }, + { 0x04, 0x00 }, { 0x05, 0x00 }, { 0x06, 0x40 }, { 0x07, 0x00 }, + { 0x08, 0x40 }, { 0x09, 0xfe }, { 0x0a, 0x09 }, { 0x0b, 0x80 }, + { 0x0c, 0x01 }, { 0x0e, 0xd3 }, { 0x0f, 0x38 }, { 0x10, 0x84 }, + { 0x11, 0x06 }, { 0x12, 0x20 }, { 0x13, 0x20 }, { 0x14, 0x00 }, + { 0x15, 0x40 }, { 0x16, 0x00 }, { 0x17, 0x40 }, { 0x18, 0xef }, + { 0x19, 0x19 }, { 0x1a, 0x20 }, { 0x1b, 0x76 }, { 0x1c, 0x04 }, + { 0x1e, 0x95 }, { 0x1f, 0x75 }, { 0x20, 0x1f }, { 0x21, 0x27 }, + { 0x22, 0x16 }, { 0x24, 0x46 }, { 0x25, 0x20 }, { 0x26, 0x90 }, + { 0x27, 0x88 } +}; + +static struct urtw_pair urtw_8225_rf_part3[] = { + { 0x00, 0x98 }, { 0x03, 0x20 }, { 0x04, 0x7e }, { 0x05, 0x12 }, + { 0x06, 0xfc }, { 0x07, 0x78 }, { 0x08, 0x2e }, { 0x10, 0x9b }, + { 0x11, 0x88 }, { 0x12, 0x47 }, { 0x13, 0xd0 }, { 0x19, 0x00 }, + { 0x1a, 0xa0 }, { 0x1b, 0x08 }, { 0x40, 0x86 }, { 0x41, 0x8d }, + { 0x42, 0x15 }, { 0x43, 0x18 }, { 0x44, 0x1f }, { 0x45, 0x1e }, + { 0x46, 0x1a }, { 0x47, 0x15 }, { 0x48, 0x10 }, { 0x49, 0x0a }, + { 0x4a, 0x05 }, { 0x4b, 0x02 }, { 0x4c, 0x05 } +}; + +static uint16_t urtw_8225_rxgain[] = { + 0x0400, 0x0401, 0x0402, 0x0403, 0x0404, 0x0405, 0x0408, 0x0409, + 0x040a, 0x040b, 0x0502, 0x0503, 0x0504, 0x0505, 0x0540, 0x0541, + 0x0542, 0x0543, 0x0544, 0x0545, 0x0580, 0x0581, 0x0582, 0x0583, + 0x0584, 0x0585, 0x0588, 0x0589, 0x058a, 0x058b, 0x0643, 0x0644, + 0x0645, 0x0680, 0x0681, 0x0682, 0x0683, 0x0684, 0x0685, 0x0688, + 0x0689, 0x068a, 0x068b, 0x068c, 0x0742, 0x0743, 0x0744, 0x0745, + 0x0780, 0x0781, 0x0782, 0x0783, 0x0784, 0x0785, 0x0788, 0x0789, + 0x078a, 0x078b, 0x078c, 0x078d, 0x0790, 0x0791, 0x0792, 0x0793, + 0x0794, 0x0795, 0x0798, 0x0799, 0x079a, 0x079b, 0x079c, 0x079d, + 0x07a0, 0x07a1, 0x07a2, 0x07a3, 0x07a4, 0x07a5, 0x07a8, 0x07a9, + 0x07aa, 0x07ab, 0x07ac, 0x07ad, 0x07b0, 0x07b1, 0x07b2, 0x07b3, + 0x07b4, 0x07b5, 0x07b8, 0x07b9, 0x07ba, 0x07bb, 0x07bb +}; + +static uint8_t urtw_8225_threshold[] = { + 0x8d, 0x8d, 0x8d, 0x8d, 0x9d, 0xad, 0xbd, +}; + +static uint8_t urtw_8225_tx_gain_cck_ofdm[] = { + 0x02, 0x06, 0x0e, 0x1e, 0x3e, 0x7e +}; + +static uint8_t urtw_8225_txpwr_cck[] = { + 0x18, 0x17, 0x15, 0x11, 0x0c, 0x08, 0x04, 0x02, + 0x1b, 0x1a, 0x17, 0x13, 0x0e, 0x09, 0x04, 0x02, + 0x1f, 0x1e, 0x1a, 0x15, 0x10, 0x0a, 0x05, 0x02, + 0x22, 0x21, 0x1d, 0x18, 0x11, 0x0b, 0x06, 0x02, + 0x26, 0x25, 0x21, 0x1b, 0x14, 0x0d, 0x06, 0x03, + 0x2b, 0x2a, 0x25, 0x1e, 0x16, 0x0e, 0x07, 0x03 +}; + +static uint8_t urtw_8225_txpwr_cck_ch14[] = { + 0x18, 0x17, 0x15, 0x0c, 0x00, 0x00, 0x00, 0x00, + 0x1b, 0x1a, 0x17, 0x0e, 0x00, 0x00, 0x00, 0x00, + 0x1f, 0x1e, 0x1a, 0x0f, 0x00, 0x00, 0x00, 0x00, + 0x22, 0x21, 0x1d, 0x11, 0x00, 0x00, 0x00, 0x00, + 0x26, 0x25, 0x21, 0x13, 0x00, 0x00, 0x00, 0x00, + 0x2b, 0x2a, 0x25, 0x15, 0x00, 0x00, 0x00, 0x00 +}; + +static uint8_t urtw_8225_txpwr_ofdm[]={ + 0x80, 0x90, 0xa2, 0xb5, 0xcb, 0xe4 +}; + +static uint8_t urtw_8225v2_gain_bg[]={ + 0x23, 0x15, 0xa5, /* -82-1dbm */ + 0x23, 0x15, 0xb5, /* -82-2dbm */ + 0x23, 0x15, 0xc5, /* -82-3dbm */ + 0x33, 0x15, 0xc5, /* -78dbm */ + 0x43, 0x15, 0xc5, /* -74dbm */ + 0x53, 0x15, 0xc5, /* -70dbm */ + 0x63, 0x15, 0xc5, /* -66dbm */ +}; + +static struct urtw_pair urtw_8225v2_rf_part1[] = { + { 0x00, 0x02bf }, { 0x01, 0x0ee0 }, { 0x02, 0x044d }, { 0x03, 0x0441 }, + { 0x04, 0x08c3 }, { 0x05, 0x0c72 }, { 0x06, 0x00e6 }, { 0x07, 0x082a }, + { 0x08, 0x003f }, { 0x09, 0x0335 }, { 0x0a, 0x09d4 }, { 0x0b, 0x07bb }, + { 0x0c, 0x0850 }, { 0x0d, 0x0cdf }, { 0x0e, 0x002b }, { 0x0f, 0x0114 } +}; + +static struct urtw_pair urtw_8225v2_rf_part2[] = { + { 0x00, 0x01 }, { 0x01, 0x02 }, { 0x02, 0x42 }, { 0x03, 0x00 }, + { 0x04, 0x00 }, { 0x05, 0x00 }, { 0x06, 0x40 }, { 0x07, 0x00 }, + { 0x08, 0x40 }, { 0x09, 0xfe }, { 0x0a, 0x08 }, { 0x0b, 0x80 }, + { 0x0c, 0x01 }, { 0x0d, 0x43 }, { 0x0e, 0xd3 }, { 0x0f, 0x38 }, + { 0x10, 0x84 }, { 0x11, 0x07 }, { 0x12, 0x20 }, { 0x13, 0x20 }, + { 0x14, 0x00 }, { 0x15, 0x40 }, { 0x16, 0x00 }, { 0x17, 0x40 }, + { 0x18, 0xef }, { 0x19, 0x19 }, { 0x1a, 0x20 }, { 0x1b, 0x15 }, + { 0x1c, 0x04 }, { 0x1d, 0xc5 }, { 0x1e, 0x95 }, { 0x1f, 0x75 }, + { 0x20, 0x1f }, { 0x21, 0x17 }, { 0x22, 0x16 }, { 0x23, 0x80 }, + { 0x24, 0x46 }, { 0x25, 0x00 }, { 0x26, 0x90 }, { 0x27, 0x88 } +}; + +static struct urtw_pair urtw_8225v2_rf_part3[] = { + { 0x00, 0x98 }, { 0x03, 0x20 }, { 0x04, 0x7e }, { 0x05, 0x12 }, + { 0x06, 0xfc }, { 0x07, 0x78 }, { 0x08, 0x2e }, { 0x09, 0x11 }, + { 0x0a, 0x17 }, { 0x0b, 0x11 }, { 0x10, 0x9b }, { 0x11, 0x88 }, + { 0x12, 0x47 }, { 0x13, 0xd0 }, { 0x19, 0x00 }, { 0x1a, 0xa0 }, + { 0x1b, 0x08 }, { 0x1d, 0x00 }, { 0x40, 0x86 }, { 0x41, 0x9d }, + { 0x42, 0x15 }, { 0x43, 0x18 }, { 0x44, 0x36 }, { 0x45, 0x35 }, + { 0x46, 0x2e }, { 0x47, 0x25 }, { 0x48, 0x1c }, { 0x49, 0x12 }, + { 0x4a, 0x09 }, { 0x4b, 0x04 }, { 0x4c, 0x05 } +}; + +static uint16_t urtw_8225v2_rxgain[] = { + 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0008, 0x0009, + 0x000a, 0x000b, 0x0102, 0x0103, 0x0104, 0x0105, 0x0140, 0x0141, + 0x0142, 0x0143, 0x0144, 0x0145, 0x0180, 0x0181, 0x0182, 0x0183, + 0x0184, 0x0185, 0x0188, 0x0189, 0x018a, 0x018b, 0x0243, 0x0244, + 0x0245, 0x0280, 0x0281, 0x0282, 0x0283, 0x0284, 0x0285, 0x0288, + 0x0289, 0x028a, 0x028b, 0x028c, 0x0342, 0x0343, 0x0344, 0x0345, + 0x0380, 0x0381, 0x0382, 0x0383, 0x0384, 0x0385, 0x0388, 0x0389, + 0x038a, 0x038b, 0x038c, 0x038d, 0x0390, 0x0391, 0x0392, 0x0393, + 0x0394, 0x0395, 0x0398, 0x0399, 0x039a, 0x039b, 0x039c, 0x039d, + 0x03a0, 0x03a1, 0x03a2, 0x03a3, 0x03a4, 0x03a5, 0x03a8, 0x03a9, + 0x03aa, 0x03ab, 0x03ac, 0x03ad, 0x03b0, 0x03b1, 0x03b2, 0x03b3, + 0x03b4, 0x03b5, 0x03b8, 0x03b9, 0x03ba, 0x03bb, 0x03bb +}; + +static uint8_t urtw_8225v2_tx_gain_cck_ofdm[] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, + 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, + 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, + 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, + 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, +}; + +static uint8_t urtw_8225v2_txpwr_cck[] = { + 0x36, 0x35, 0x2e, 0x25, 0x1c, 0x12, 0x09, 0x04 +}; + +static uint8_t urtw_8225v2_txpwr_cck_ch14[] = { + 0x36, 0x35, 0x2e, 0x1b, 0x00, 0x00, 0x00, 0x00 +}; + +static struct urtw_pair urtw_ratetable[] = { + { 2, 0 }, { 4, 1 }, { 11, 2 }, { 12, 4 }, { 18, 5 }, + { 22, 3 }, { 24, 6 }, { 36, 7 }, { 48, 8 }, { 72, 9 }, + { 96, 10 }, { 108, 11 } +}; + +static struct ieee80211vap *urtw_vap_create(struct ieee80211com *, + const char name[IFNAMSIZ], int unit, int opmode, + int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], + const uint8_t mac[IEEE80211_ADDR_LEN]); +static void urtw_vap_delete(struct ieee80211vap *); +static void urtw_init(void *); +static void urtw_stop(struct ifnet *, int); +static int urtw_ioctl(struct ifnet *, u_long, caddr_t); +static void urtw_start(struct ifnet *); +static int urtw_alloc_rx_data_list(struct urtw_softc *); +static int urtw_alloc_tx_data_list(struct urtw_softc *); +static void urtw_free_data_list(struct urtw_softc *, + usbd_pipe_handle, usbd_pipe_handle, + struct urtw_data data[], int); +static int urtw_raw_xmit(struct ieee80211_node *, struct mbuf *, + const struct ieee80211_bpf_params *); +static void urtw_scan_start(struct ieee80211com *); +static void urtw_scan_end(struct ieee80211com *); +static void urtw_set_channel(struct ieee80211com *); +static void urtw_update_mcast(struct ifnet *); +static void urtw_rxeof(usbd_xfer_handle, usbd_private_handle, + usbd_status); +static int urtw_tx_start(struct urtw_softc *, + struct ieee80211_node *, struct mbuf *, int); +static void urtw_txeof_low(usbd_xfer_handle, usbd_private_handle, + usbd_status); +static void urtw_txeof_normal(usbd_xfer_handle, + usbd_private_handle, usbd_status); +static int urtw_newstate(struct ieee80211vap *, + enum ieee80211_state, int); +static void urtw_ledtask(void *); +static void urtw_ledusbtask(void *); +static void urtw_ctxtask(void *); +static void urtw_task(void *); +static void urtw_watchdog(void *); +static void urtw_set_multi(void *); +static int urtw_isbmode(uint16_t); +static uint16_t urtw_rate2rtl(int); +static uint16_t urtw_rtl2rate(int); +static usbd_status urtw_set_rate(struct urtw_softc *); +static usbd_status urtw_update_msr(struct urtw_softc *); +static usbd_status urtw_read8_c(struct urtw_softc *, int, uint8_t *); +static usbd_status urtw_read16_c(struct urtw_softc *, int, uint16_t *); +static usbd_status urtw_read32_c(struct urtw_softc *, int, uint32_t *); +static usbd_status urtw_write8_c(struct urtw_softc *, int, uint8_t); +static usbd_status urtw_write16_c(struct urtw_softc *, int, uint16_t); +static usbd_status urtw_write32_c(struct urtw_softc *, int, uint32_t); +static usbd_status urtw_eprom_cs(struct urtw_softc *, int); +static usbd_status urtw_eprom_ck(struct urtw_softc *); +static usbd_status urtw_eprom_sendbits(struct urtw_softc *, int16_t *, + int); +static usbd_status urtw_eprom_read32(struct urtw_softc *, uint32_t, + uint32_t *); +static usbd_status urtw_eprom_readbit(struct urtw_softc *, int16_t *); +static usbd_status urtw_eprom_writebit(struct urtw_softc *, int16_t); +static usbd_status urtw_get_macaddr(struct urtw_softc *); +static usbd_status urtw_get_txpwr(struct urtw_softc *); +static usbd_status urtw_get_rfchip(struct urtw_softc *); +static usbd_status urtw_led_init(struct urtw_softc *); +static usbd_status urtw_8185_rf_pins_enable(struct urtw_softc *); +static usbd_status urtw_8185_tx_antenna(struct urtw_softc *, uint8_t); +static usbd_status urtw_8187_write_phy(struct urtw_softc *, uint8_t, + uint32_t); +static usbd_status urtw_8187_write_phy_ofdm_c(struct urtw_softc *, + uint8_t, uint32_t); +static usbd_status urtw_8187_write_phy_cck_c(struct urtw_softc *, uint8_t, + uint32_t); +static usbd_status urtw_8225_setgain(struct urtw_softc *, int16_t); +static usbd_status urtw_8225_usb_init(struct urtw_softc *); +static usbd_status urtw_8225_write_c(struct urtw_softc *, uint8_t, + uint16_t); +static usbd_status urtw_8225_write_s16(struct urtw_softc *, uint8_t, int, + uint16_t *); +static usbd_status urtw_8225_read(struct urtw_softc *, uint8_t, + uint32_t *); +static usbd_status urtw_8225_rf_init(struct urtw_softc *); +static usbd_status urtw_8225_rf_set_chan(struct urtw_softc *, int); +static usbd_status urtw_8225_rf_set_sens(struct urtw_softc *, int); +static usbd_status urtw_8225_set_txpwrlvl(struct urtw_softc *, int); +static usbd_status urtw_8225v2_rf_init(struct urtw_softc *); +static usbd_status urtw_8225v2_rf_set_chan(struct urtw_softc *, int); +static usbd_status urtw_8225v2_set_txpwrlvl(struct urtw_softc *, int); +static usbd_status urtw_8225v2_setgain(struct urtw_softc *, int16_t); +static usbd_status urtw_8225_isv2(struct urtw_softc *, int *); +static usbd_status urtw_read8e(struct urtw_softc *, int, uint8_t *); +static usbd_status urtw_write8e(struct urtw_softc *, int, uint8_t); +static usbd_status urtw_8180_set_anaparam(struct urtw_softc *, uint32_t); +static usbd_status urtw_8185_set_anaparam2(struct urtw_softc *, uint32_t); +static usbd_status urtw_open_pipes(struct urtw_softc *); +static usbd_status urtw_close_pipes(struct urtw_softc *); +static usbd_status urtw_intr_enable(struct urtw_softc *); +static usbd_status urtw_intr_disable(struct urtw_softc *); +static usbd_status urtw_reset(struct urtw_softc *); +static usbd_status urtw_led_on(struct urtw_softc *, int); +static usbd_status urtw_led_ctl(struct urtw_softc *, int); +static usbd_status urtw_led_blink(struct urtw_softc *); +static usbd_status urtw_led_mode0(struct urtw_softc *, int); +static usbd_status urtw_led_mode1(struct urtw_softc *, int); +static usbd_status urtw_led_mode2(struct urtw_softc *, int); +static usbd_status urtw_led_mode3(struct urtw_softc *, int); +static usbd_status urtw_rx_setconf(struct urtw_softc *); +static usbd_status urtw_rx_enable(struct urtw_softc *); +static usbd_status urtw_tx_enable(struct urtw_softc *sc); + +static int +urtw_match(device_t dev) +{ + struct usb_attach_arg *uaa = device_get_ivars(dev); + const struct usb_devno *ud; + + if (uaa->iface != NULL) + return UMATCH_NONE; + ud = usb_lookup(urtw_devs, uaa->vendor, uaa->product); + + return (ud != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE); +} + +static int +urtw_attach(device_t dev) +{ + int ret = 0; + struct urtw_softc *sc = device_get_softc(dev); + struct usb_attach_arg *uaa = device_get_ivars(dev); + struct ieee80211com *ic; + struct ifnet *ifp; + uint8_t bands; + uint32_t data; + usbd_status error; + + sc->sc_dev = dev; + sc->sc_udev = uaa->device; +#ifdef URTW_DEBUG + sc->sc_debug = urtw_debug; +#endif + + mtx_init(&sc->sc_mtx, device_get_nameunit(sc->sc_dev), MTX_NETWORK_LOCK, + MTX_DEF); + callout_init(&sc->sc_led_ch, 0); + callout_init(&sc->sc_watchdog_ch, 0); + usb_init_task(&sc->sc_ledtask, urtw_ledusbtask, sc); + usb_init_task(&sc->sc_ctxtask, urtw_ctxtask, sc); + usb_init_task(&sc->sc_task, urtw_task, sc); + + urtw_read32_m(sc, URTW_RX, &data); + sc->sc_epromtype = (data & URTW_RX_9356SEL) ? URTW_EEPROM_93C56 : + URTW_EEPROM_93C46; + + error = urtw_get_rfchip(sc); + if (error != 0) + goto fail; + error = urtw_get_macaddr(sc); + if (error != 0) + goto fail; + error = urtw_get_txpwr(sc); + if (error != 0) + goto fail; + error = urtw_led_init(sc); + if (error != 0) + goto fail; + + sc->sc_rts_retry = URTW_DEFAULT_RTS_RETRY; + sc->sc_tx_retry = URTW_DEFAULT_TX_RETRY; + sc->sc_currate = 3; + sc->sc_preamble_mode = urtw_preamble_mode; + + ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); + if (ifp == NULL) { + device_printf(sc->sc_dev, "can not allocate ifnet\n"); + ret = ENXIO; + goto fail; + } + + ifp->if_softc = sc; + if_initname(ifp, "urtw", device_get_unit(sc->sc_dev)); + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST | + IFF_NEEDSGIANT; /* USB stack is still under Giant lock */ + ifp->if_init = urtw_init; + ifp->if_ioctl = urtw_ioctl; + ifp->if_start = urtw_start; + /* XXX URTW_TX_DATA_LIST_COUNT */ + IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); + ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; + IFQ_SET_READY(&ifp->if_snd); + + ic = ifp->if_l2com; + ic->ic_ifp = ifp; + ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ + ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ + + /* set device capabilities */ + ic->ic_caps = + IEEE80211_C_STA | /* station mode */ + IEEE80211_C_MONITOR | /* monitor mode supported */ + IEEE80211_C_TXPMGT | /* tx power management */ + IEEE80211_C_SHPREAMBLE | /* short preamble supported */ + IEEE80211_C_SHSLOT | /* short slot time supported */ + IEEE80211_C_BGSCAN | /* capable of bg scanning */ + IEEE80211_C_WPA; /* 802.11i */ + + IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_bssid); + + bands = 0; + setbit(&bands, IEEE80211_MODE_11B); + setbit(&bands, IEEE80211_MODE_11G); + ieee80211_init_channels(ic, NULL, &bands); + + ieee80211_ifattach(ic); + ic->ic_raw_xmit = urtw_raw_xmit; + ic->ic_scan_start = urtw_scan_start; + ic->ic_scan_end = urtw_scan_end; + ic->ic_set_channel = urtw_set_channel; + + ic->ic_vap_create = urtw_vap_create; + ic->ic_vap_delete = urtw_vap_delete; + ic->ic_update_mcast = urtw_update_mcast; + + bpfattach(ifp, DLT_IEEE802_11_RADIO, + sizeof (struct ieee80211_frame) + sizeof(sc->sc_txtap)); + + sc->sc_rxtap_len = sizeof sc->sc_rxtap; + sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); + sc->sc_rxtap.wr_ihdr.it_present = htole32(URTW_RX_RADIOTAP_PRESENT); + + sc->sc_txtap_len = sizeof sc->sc_txtap; + sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); + sc->sc_txtap.wt_ihdr.it_present = htole32(URTW_TX_RADIOTAP_PRESENT); + + if (bootverbose) + ieee80211_announce(ic); + + usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); +fail: + return (ret); +} + +static usbd_status +urtw_open_pipes(struct urtw_softc *sc) +{ + usbd_status error; + + /* + * NB: there is no way to distinguish each pipes so we need to hardcode + * pipe numbers + */ + + /* tx pipe - low priority packets */ + error = usbd_open_pipe(sc->sc_iface, 0x2, USBD_EXCLUSIVE_USE, + &sc->sc_txpipe_low); + if (error != 0) { + device_printf(sc->sc_dev, "could not open Tx low pipe: %s\n", + usbd_errstr(error)); + goto fail; + } + /* tx pipe - normal priority packets */ + error = usbd_open_pipe(sc->sc_iface, 0x3, USBD_EXCLUSIVE_USE, + &sc->sc_txpipe_normal); + if (error != 0) { + device_printf(sc->sc_dev, "could not open Tx normal pipe: %s\n", + usbd_errstr(error)); + goto fail; + } + /* rx pipe */ + error = usbd_open_pipe(sc->sc_iface, 0x81, USBD_EXCLUSIVE_USE, + &sc->sc_rxpipe); + if (error != 0) { + device_printf(sc->sc_dev, "could not open Rx pipe: %s\n", + usbd_errstr(error)); + goto fail; + } + + return (0); +fail: + (void)urtw_close_pipes(sc); + return (error); +} + +static usbd_status +urtw_close_pipes(struct urtw_softc *sc) +{ + usbd_status error = 0; + + if (sc->sc_rxpipe != NULL) { + error = usbd_close_pipe(sc->sc_rxpipe); + if (error != 0) + goto fail; + sc->sc_rxpipe = NULL; + } + if (sc->sc_txpipe_low != NULL) { + error = usbd_close_pipe(sc->sc_txpipe_low); + if (error != 0) + goto fail; + sc->sc_txpipe_low = NULL; + } + if (sc->sc_txpipe_normal != NULL) { + error = usbd_close_pipe(sc->sc_txpipe_normal); + if (error != 0) + goto fail; + sc->sc_txpipe_normal = NULL; + } +fail: + return (error); +} + +static int +urtw_alloc_data_list(struct urtw_softc *sc, struct urtw_data data[], + int ndata, int maxsz, int fillmbuf) +{ + int i, error; + + for (i = 0; i < ndata; i++) { + struct urtw_data *dp = &data[i]; + + dp->sc = sc; + dp->xfer = usbd_alloc_xfer(sc->sc_udev); + if (dp->xfer == NULL) { + device_printf(sc->sc_dev, "could not allocate xfer\n"); + error = ENOMEM; + goto fail; + } + if (fillmbuf) { + dp->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); + if (dp->m == NULL) { + device_printf(sc->sc_dev, + "could not allocate rx mbuf\n"); + error = ENOMEM; + goto fail; + } + dp->buf = mtod(dp->m, uint8_t *); + } else { + dp->m = NULL; + dp->buf = usbd_alloc_buffer(dp->xfer, maxsz); + if (dp->buf == NULL) { + device_printf(sc->sc_dev, + "could not allocate buffer\n"); + error = ENOMEM; + goto fail; + } + if (((unsigned long)dp->buf) % 4) + device_printf(sc->sc_dev, + "warn: unaligned buffer %p\n", dp->buf); + } + dp->ni = NULL; + } + + return 0; + +fail: urtw_free_data_list(sc, NULL, NULL, data, ndata); + return error; +} + +static void +urtw_free_data_list(struct urtw_softc *sc, usbd_pipe_handle pipe1, + usbd_pipe_handle pipe2, struct urtw_data data[], int ndata) +{ + int i; + + /* make sure no transfers are pending */ + if (pipe1 != NULL) + usbd_abort_pipe(pipe1); + if (pipe2 != NULL) + usbd_abort_pipe(pipe2); + + for (i = 0; i < ndata; i++) { + struct urtw_data *dp = &data[i]; + + if (dp->xfer != NULL) { + usbd_free_xfer(dp->xfer); + dp->xfer = NULL; + } + if (dp->m != NULL) { + m_freem(dp->m); + dp->m = NULL; + } + if (dp->ni != NULL) { + ieee80211_free_node(dp->ni); + dp->ni = NULL; + } + } +} + +static int +urtw_alloc_rx_data_list(struct urtw_softc *sc) +{ + + return urtw_alloc_data_list(sc, + sc->sc_rxdata, URTW_RX_DATA_LIST_COUNT, MCLBYTES, 1 /* mbufs */); +} + +static void +urtw_free_rx_data_list(struct urtw_softc *sc) +{ + + urtw_free_data_list(sc, sc->sc_rxpipe, NULL, sc->sc_rxdata, + URTW_RX_DATA_LIST_COUNT); +} + +static int +urtw_alloc_tx_data_list(struct urtw_softc *sc) +{ + + return urtw_alloc_data_list(sc, + sc->sc_txdata, URTW_TX_DATA_LIST_COUNT, URTW_TX_MAXSIZE, + 0 /* no mbufs */); +} + +static void +urtw_free_tx_data_list(struct urtw_softc *sc) +{ + + urtw_free_data_list(sc, sc->sc_txpipe_low, sc->sc_txpipe_normal, + sc->sc_txdata, URTW_TX_DATA_LIST_COUNT); +} + +static usbd_status +urtw_led_init(struct urtw_softc *sc) +{ + uint32_t rev; + usbd_status error; + + urtw_read8_m(sc, URTW_PSR, &sc->sc_psr); + error = urtw_eprom_read32(sc, URTW_EPROM_SWREV, &rev); + if (error != 0) + goto fail; + + switch (rev & URTW_EPROM_CID_MASK) { + case URTW_EPROM_CID_ALPHA0: + sc->sc_strategy = URTW_SW_LED_MODE1; + break; + case URTW_EPROM_CID_SERCOMM_PS: + sc->sc_strategy = URTW_SW_LED_MODE3; + break; + case URTW_EPROM_CID_HW_LED: + sc->sc_strategy = URTW_HW_LED; + break; + case URTW_EPROM_CID_RSVD0: + case URTW_EPROM_CID_RSVD1: + default: + sc->sc_strategy = URTW_SW_LED_MODE0; + break; + } + + sc->sc_gpio_ledpin = URTW_LED_PIN_GPIO0; + +fail: + return (error); +} + +/* XXX why we should allocalte memory buffer instead of using memory stack? */ +static usbd_status +urtw_8225_write_s16(struct urtw_softc *sc, uint8_t addr, int index, + uint16_t *data) +{ + uint8_t *buf; + uint16_t data16; + usb_device_request_t *req; + usbd_status error = 0; + + data16 = *data; + req = (usb_device_request_t *)malloc(sizeof(usb_device_request_t), + M_80211_VAP, M_NOWAIT | M_ZERO); + if (req == NULL) { + device_printf(sc->sc_dev, "could not allocate a memory\n"); + goto fail0; + } + buf = (uint8_t *)malloc(2, M_80211_VAP, M_NOWAIT | M_ZERO); + if (req == NULL) { + device_printf(sc->sc_dev, "could not allocate a memory\n"); + goto fail1; + } + + req->bmRequestType = UT_WRITE_VENDOR_DEVICE; + req->bRequest = URTW_8187_SETREGS_REQ; + USETW(req->wValue, addr); + USETW(req->wIndex, index); + USETW(req->wLength, sizeof(uint16_t)); + buf[0] = (data16 & 0x00ff); + buf[1] = (data16 & 0xff00) >> 8; + + error = usbd_do_request(sc->sc_udev, req, buf); + + free(buf, M_80211_VAP); +fail1: free(req, M_80211_VAP); +fail0: return (error); +} + +static usbd_status +urtw_8225_read(struct urtw_softc *sc, uint8_t addr, uint32_t *data) +{ + int i; + int16_t bit; + uint8_t rlen = 12, wlen = 6; + uint16_t o1, o2, o3, tmp; + uint32_t d2w = ((uint32_t)(addr & 0x1f)) << 27; + uint32_t mask = 0x80000000, value = 0; + usbd_status error; + + urtw_read16_m(sc, URTW_RF_PINS_OUTPUT, &o1); + urtw_read16_m(sc, URTW_RF_PINS_ENABLE, &o2); + urtw_read16_m(sc, URTW_RF_PINS_SELECT, &o3); + urtw_write16_m(sc, URTW_RF_PINS_ENABLE, o2 | URTW_RF_PINS_MAGIC4); + urtw_write16_m(sc, URTW_RF_PINS_SELECT, o3 | URTW_RF_PINS_MAGIC4); + o1 &= ~URTW_RF_PINS_MAGIC4; + urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, o1 | URTW_BB_HOST_BANG_EN); + DELAY(5); + urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, o1); + DELAY(5); + + for (i = 0; i < (wlen / 2); i++, mask = mask >> 1) { + bit = ((d2w & mask) != 0) ? 1 : 0; + + urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1); + DELAY(2); + urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 | + URTW_BB_HOST_BANG_CLK); + DELAY(2); + urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 | + URTW_BB_HOST_BANG_CLK); + DELAY(2); + mask = mask >> 1; + if (i == 2) + break; + bit = ((d2w & mask) != 0) ? 1 : 0; + urtw_write16_m(sc, URTW_RF_PINS_OUTPUT, bit | o1 | + URTW_BB_HOST_BANG_CLK); + DELAY(2); *** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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