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freebsd-dev/sys/dev/tl/if_tl.c
Matt Macy d7c5a620e2 ifnet: Replace if_addr_lock rwlock with epoch + mutex 
Run on LLNW canaries and tested by pho@

gallatin:
Using a 14-core, 28-HTT single socket E5-2697 v3 with a 40GbE MLX5
based ConnectX 4-LX NIC, I see an almost 12% improvement in received
packet rate, and a larger improvement in bytes delivered all the way
to userspace.

When the host receiving 64 streams of netperf -H $DUT -t UDP_STREAM -- -m 1,
I see, using nstat -I mce0 1 before the patch:

InMpps OMpps  InGbs  OGbs err TCP Est %CPU syscalls csw     irq GBfree
4.98   0.00   4.42   0.00 4235592     33   83.80 4720653 2149771   1235 247.32
4.73   0.00   4.20   0.00 4025260     33   82.99 4724900 2139833   1204 247.32
4.72   0.00   4.20   0.00 4035252     33   82.14 4719162 2132023   1264 247.32
4.71   0.00   4.21   0.00 4073206     33   83.68 4744973 2123317   1347 247.32
4.72   0.00   4.21   0.00 4061118     33   80.82 4713615 2188091   1490 247.32
4.72   0.00   4.21   0.00 4051675     33   85.29 4727399 2109011   1205 247.32
4.73   0.00   4.21   0.00 4039056     33   84.65 4724735 2102603   1053 247.32

After the patch

InMpps OMpps  InGbs  OGbs err TCP Est %CPU syscalls csw     irq GBfree
5.43   0.00   4.20   0.00 3313143     33   84.96 5434214 1900162   2656 245.51
5.43   0.00   4.20   0.00 3308527     33   85.24 5439695 1809382   2521 245.51
5.42   0.00   4.19   0.00 3316778     33   87.54 5416028 1805835   2256 245.51
5.42   0.00   4.19   0.00 3317673     33   90.44 5426044 1763056   2332 245.51
5.42   0.00   4.19   0.00 3314839     33   88.11 5435732 1792218   2499 245.52
5.44   0.00   4.19   0.00 3293228     33   91.84 5426301 1668597   2121 245.52

Similarly, netperf reports 230Mb/s before the patch, and 270Mb/s after the patch

Reviewed by:	gallatin
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D15366
2018-05-18 20:13:34 +00:00

2280 lines
60 KiB
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/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (c) 1997, 1998
* Bill Paul <wpaul@ctr.columbia.edu>. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Texas Instruments ThunderLAN driver for FreeBSD 2.2.6 and 3.x.
* Supports many Compaq PCI NICs based on the ThunderLAN ethernet controller,
* the National Semiconductor DP83840A physical interface and the
* Microchip Technology 24Cxx series serial EEPROM.
*
* Written using the following four documents:
*
* Texas Instruments ThunderLAN Programmer's Guide (www.ti.com)
* National Semiconductor DP83840A data sheet (www.national.com)
* Microchip Technology 24C02C data sheet (www.microchip.com)
* Micro Linear ML6692 100BaseTX only PHY data sheet (www.microlinear.com)
*
* Written by Bill Paul <wpaul@ctr.columbia.edu>
* Electrical Engineering Department
* Columbia University, New York City
*/
/*
* Some notes about the ThunderLAN:
*
* The ThunderLAN controller is a single chip containing PCI controller
* logic, approximately 3K of on-board SRAM, a LAN controller, and media
* independent interface (MII) bus. The MII allows the ThunderLAN chip to
* control up to 32 different physical interfaces (PHYs). The ThunderLAN
* also has a built-in 10baseT PHY, allowing a single ThunderLAN controller
* to act as a complete ethernet interface.
*
* Other PHYs may be attached to the ThunderLAN; the Compaq 10/100 cards
* use a National Semiconductor DP83840A PHY that supports 10 or 100Mb/sec
* in full or half duplex. Some of the Compaq Deskpro machines use a
* Level 1 LXT970 PHY with the same capabilities. Certain Olicom adapters
* use a Micro Linear ML6692 100BaseTX only PHY, which can be used in
* concert with the ThunderLAN's internal PHY to provide full 10/100
* support. This is cheaper than using a standalone external PHY for both
* 10/100 modes and letting the ThunderLAN's internal PHY go to waste.
* A serial EEPROM is also attached to the ThunderLAN chip to provide
* power-up default register settings and for storing the adapter's
* station address. Although not supported by this driver, the ThunderLAN
* chip can also be connected to token ring PHYs.
*
* The ThunderLAN has a set of registers which can be used to issue
* commands, acknowledge interrupts, and to manipulate other internal
* registers on its DIO bus. The primary registers can be accessed
* using either programmed I/O (inb/outb) or via PCI memory mapping,
* depending on how the card is configured during the PCI probing
* phase. It is even possible to have both PIO and memory mapped
* access turned on at the same time.
*
* Frame reception and transmission with the ThunderLAN chip is done
* using frame 'lists.' A list structure looks more or less like this:
*
* struct tl_frag {
* u_int32_t fragment_address;
* u_int32_t fragment_size;
* };
* struct tl_list {
* u_int32_t forward_pointer;
* u_int16_t cstat;
* u_int16_t frame_size;
* struct tl_frag fragments[10];
* };
*
* The forward pointer in the list header can be either a 0 or the address
* of another list, which allows several lists to be linked together. Each
* list contains up to 10 fragment descriptors. This means the chip allows
* ethernet frames to be broken up into up to 10 chunks for transfer to
* and from the SRAM. Note that the forward pointer and fragment buffer
* addresses are physical memory addresses, not virtual. Note also that
* a single ethernet frame can not span lists: if the host wants to
* transmit a frame and the frame data is split up over more than 10
* buffers, the frame has to collapsed before it can be transmitted.
*
* To receive frames, the driver sets up a number of lists and populates
* the fragment descriptors, then it sends an RX GO command to the chip.
* When a frame is received, the chip will DMA it into the memory regions
* specified by the fragment descriptors and then trigger an RX 'end of
* frame interrupt' when done. The driver may choose to use only one
* fragment per list; this may result is slighltly less efficient use
* of memory in exchange for improving performance.
*
* To transmit frames, the driver again sets up lists and fragment
* descriptors, only this time the buffers contain frame data that
* is to be DMA'ed into the chip instead of out of it. Once the chip
* has transferred the data into its on-board SRAM, it will trigger a
* TX 'end of frame' interrupt. It will also generate an 'end of channel'
* interrupt when it reaches the end of the list.
*/
/*
* Some notes about this driver:
*
* The ThunderLAN chip provides a couple of different ways to organize
* reception, transmission and interrupt handling. The simplest approach
* is to use one list each for transmission and reception. In this mode,
* the ThunderLAN will generate two interrupts for every received frame
* (one RX EOF and one RX EOC) and two for each transmitted frame (one
* TX EOF and one TX EOC). This may make the driver simpler but it hurts
* performance to have to handle so many interrupts.
*
* Initially I wanted to create a circular list of receive buffers so
* that the ThunderLAN chip would think there was an infinitely long
* receive channel and never deliver an RXEOC interrupt. However this
* doesn't work correctly under heavy load: while the manual says the
* chip will trigger an RXEOF interrupt each time a frame is copied into
* memory, you can't count on the chip waiting around for you to acknowledge
* the interrupt before it starts trying to DMA the next frame. The result
* is that the chip might traverse the entire circular list and then wrap
* around before you have a chance to do anything about it. Consequently,
* the receive list is terminated (with a 0 in the forward pointer in the
* last element). Each time an RXEOF interrupt arrives, the used list
* is shifted to the end of the list. This gives the appearance of an
* infinitely large RX chain so long as the driver doesn't fall behind
* the chip and allow all of the lists to be filled up.
*
* If all the lists are filled, the adapter will deliver an RX 'end of
* channel' interrupt when it hits the 0 forward pointer at the end of
* the chain. The RXEOC handler then cleans out the RX chain and resets
* the list head pointer in the ch_parm register and restarts the receiver.
*
* For frame transmission, it is possible to program the ThunderLAN's
* transmit interrupt threshold so that the chip can acknowledge multiple
* lists with only a single TX EOF interrupt. This allows the driver to
* queue several frames in one shot, and only have to handle a total
* two interrupts (one TX EOF and one TX EOC) no matter how many frames
* are transmitted. Frame transmission is done directly out of the
* mbufs passed to the tl_start() routine via the interface send queue.
* The driver simply sets up the fragment descriptors in the transmit
* lists to point to the mbuf data regions and sends a TX GO command.
*
* Note that since the RX and TX lists themselves are always used
* only by the driver, the are malloc()ed once at driver initialization
* time and never free()ed.
*
* Also, in order to remain as platform independent as possible, this
* driver uses memory mapped register access to manipulate the card
* as opposed to programmed I/O. This avoids the use of the inb/outb
* (and related) instructions which are specific to the i386 platform.
*
* Using these techniques, this driver achieves very high performance
* by minimizing the amount of interrupts generated during large
* transfers and by completely avoiding buffer copies. Frame transfer
* to and from the ThunderLAN chip is performed entirely by the chip
* itself thereby reducing the load on the host CPU.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_var.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>
#include <net/bpf.h>
#include <vm/vm.h> /* for vtophys */
#include <vm/pmap.h> /* for vtophys */
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <dev/mii/mii.h>
#include <dev/mii/mii_bitbang.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
/*
* Default to using PIO register access mode to pacify certain
* laptop docking stations with built-in ThunderLAN chips that
* don't seem to handle memory mapped mode properly.
*/
#define TL_USEIOSPACE
#include <dev/tl/if_tlreg.h>
MODULE_DEPEND(tl, pci, 1, 1, 1);
MODULE_DEPEND(tl, ether, 1, 1, 1);
MODULE_DEPEND(tl, miibus, 1, 1, 1);
/* "device miibus" required. See GENERIC if you get errors here. */
#include "miibus_if.h"
/*
* Various supported device vendors/types and their names.
*/
static const struct tl_type tl_devs[] = {
{ TI_VENDORID, TI_DEVICEID_THUNDERLAN,
"Texas Instruments ThunderLAN" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10,
"Compaq Netelligent 10" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100,
"Compaq Netelligent 10/100" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100_PROLIANT,
"Compaq Netelligent 10/100 Proliant" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100_DUAL,
"Compaq Netelligent 10/100 Dual Port" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETFLEX_3P_INTEGRATED,
"Compaq NetFlex-3/P Integrated" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETFLEX_3P,
"Compaq NetFlex-3/P" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETFLEX_3P_BNC,
"Compaq NetFlex 3/P w/ BNC" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100_EMBEDDED,
"Compaq Netelligent 10/100 TX Embedded UTP" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_T2_UTP_COAX,
"Compaq Netelligent 10 T/2 PCI UTP/Coax" },
{ COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100_TX_UTP,
"Compaq Netelligent 10/100 TX UTP" },
{ OLICOM_VENDORID, OLICOM_DEVICEID_OC2183,
"Olicom OC-2183/2185" },
{ OLICOM_VENDORID, OLICOM_DEVICEID_OC2325,
"Olicom OC-2325" },
{ OLICOM_VENDORID, OLICOM_DEVICEID_OC2326,
"Olicom OC-2326 10/100 TX UTP" },
{ 0, 0, NULL }
};
static int tl_probe(device_t);
static int tl_attach(device_t);
static int tl_detach(device_t);
static int tl_intvec_rxeoc(void *, u_int32_t);
static int tl_intvec_txeoc(void *, u_int32_t);
static int tl_intvec_txeof(void *, u_int32_t);
static int tl_intvec_rxeof(void *, u_int32_t);
static int tl_intvec_adchk(void *, u_int32_t);
static int tl_intvec_netsts(void *, u_int32_t);
static int tl_newbuf(struct tl_softc *, struct tl_chain_onefrag *);
static void tl_stats_update(void *);
static int tl_encap(struct tl_softc *, struct tl_chain *, struct mbuf *);
static void tl_intr(void *);
static void tl_start(struct ifnet *);
static void tl_start_locked(struct ifnet *);
static int tl_ioctl(struct ifnet *, u_long, caddr_t);
static void tl_init(void *);
static void tl_init_locked(struct tl_softc *);
static void tl_stop(struct tl_softc *);
static void tl_watchdog(struct tl_softc *);
static int tl_shutdown(device_t);
static int tl_ifmedia_upd(struct ifnet *);
static void tl_ifmedia_sts(struct ifnet *, struct ifmediareq *);
static u_int8_t tl_eeprom_putbyte(struct tl_softc *, int);
static u_int8_t tl_eeprom_getbyte(struct tl_softc *, int, u_int8_t *);
static int tl_read_eeprom(struct tl_softc *, caddr_t, int, int);
static int tl_miibus_readreg(device_t, int, int);
static int tl_miibus_writereg(device_t, int, int, int);
static void tl_miibus_statchg(device_t);
static void tl_setmode(struct tl_softc *, int);
static uint32_t tl_mchash(const uint8_t *);
static void tl_setmulti(struct tl_softc *);
static void tl_setfilt(struct tl_softc *, caddr_t, int);
static void tl_softreset(struct tl_softc *, int);
static void tl_hardreset(device_t);
static int tl_list_rx_init(struct tl_softc *);
static int tl_list_tx_init(struct tl_softc *);
static u_int8_t tl_dio_read8(struct tl_softc *, int);
static u_int16_t tl_dio_read16(struct tl_softc *, int);
static u_int32_t tl_dio_read32(struct tl_softc *, int);
static void tl_dio_write8(struct tl_softc *, int, int);
static void tl_dio_write16(struct tl_softc *, int, int);
static void tl_dio_write32(struct tl_softc *, int, int);
static void tl_dio_setbit(struct tl_softc *, int, int);
static void tl_dio_clrbit(struct tl_softc *, int, int);
static void tl_dio_setbit16(struct tl_softc *, int, int);
static void tl_dio_clrbit16(struct tl_softc *, int, int);
/*
* MII bit-bang glue
*/
static uint32_t tl_mii_bitbang_read(device_t);
static void tl_mii_bitbang_write(device_t, uint32_t);
static const struct mii_bitbang_ops tl_mii_bitbang_ops = {
tl_mii_bitbang_read,
tl_mii_bitbang_write,
{
TL_SIO_MDATA, /* MII_BIT_MDO */
TL_SIO_MDATA, /* MII_BIT_MDI */
TL_SIO_MCLK, /* MII_BIT_MDC */
TL_SIO_MTXEN, /* MII_BIT_DIR_HOST_PHY */
0, /* MII_BIT_DIR_PHY_HOST */
}
};
#ifdef TL_USEIOSPACE
#define TL_RES SYS_RES_IOPORT
#define TL_RID TL_PCI_LOIO
#else
#define TL_RES SYS_RES_MEMORY
#define TL_RID TL_PCI_LOMEM
#endif
static device_method_t tl_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, tl_probe),
DEVMETHOD(device_attach, tl_attach),
DEVMETHOD(device_detach, tl_detach),
DEVMETHOD(device_shutdown, tl_shutdown),
/* MII interface */
DEVMETHOD(miibus_readreg, tl_miibus_readreg),
DEVMETHOD(miibus_writereg, tl_miibus_writereg),
DEVMETHOD(miibus_statchg, tl_miibus_statchg),
DEVMETHOD_END
};
static driver_t tl_driver = {
"tl",
tl_methods,
sizeof(struct tl_softc)
};
static devclass_t tl_devclass;
DRIVER_MODULE(tl, pci, tl_driver, tl_devclass, 0, 0);
DRIVER_MODULE(miibus, tl, miibus_driver, miibus_devclass, 0, 0);
static u_int8_t tl_dio_read8(sc, reg)
struct tl_softc *sc;
int reg;
{
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return(CSR_READ_1(sc, TL_DIO_DATA + (reg & 3)));
}
static u_int16_t tl_dio_read16(sc, reg)
struct tl_softc *sc;
int reg;
{
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return(CSR_READ_2(sc, TL_DIO_DATA + (reg & 3)));
}
static u_int32_t tl_dio_read32(sc, reg)
struct tl_softc *sc;
int reg;
{
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return(CSR_READ_4(sc, TL_DIO_DATA + (reg & 3)));
}
static void tl_dio_write8(sc, reg, val)
struct tl_softc *sc;
int reg;
int val;
{
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_1(sc, TL_DIO_DATA + (reg & 3), val);
}
static void tl_dio_write16(sc, reg, val)
struct tl_softc *sc;
int reg;
int val;
{
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_DATA + (reg & 3), val);
}
static void tl_dio_write32(sc, reg, val)
struct tl_softc *sc;
int reg;
int val;
{
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_4(sc, TL_DIO_DATA + (reg & 3), val);
}
static void
tl_dio_setbit(sc, reg, bit)
struct tl_softc *sc;
int reg;
int bit;
{
u_int8_t f;
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
f = CSR_READ_1(sc, TL_DIO_DATA + (reg & 3));
f |= bit;
CSR_BARRIER(sc, TL_DIO_DATA + (reg & 3), 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_1(sc, TL_DIO_DATA + (reg & 3), f);
}
static void
tl_dio_clrbit(sc, reg, bit)
struct tl_softc *sc;
int reg;
int bit;
{
u_int8_t f;
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
f = CSR_READ_1(sc, TL_DIO_DATA + (reg & 3));
f &= ~bit;
CSR_BARRIER(sc, TL_DIO_DATA + (reg & 3), 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_1(sc, TL_DIO_DATA + (reg & 3), f);
}
static void tl_dio_setbit16(sc, reg, bit)
struct tl_softc *sc;
int reg;
int bit;
{
u_int16_t f;
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
f = CSR_READ_2(sc, TL_DIO_DATA + (reg & 3));
f |= bit;
CSR_BARRIER(sc, TL_DIO_DATA + (reg & 3), 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_DATA + (reg & 3), f);
}
static void tl_dio_clrbit16(sc, reg, bit)
struct tl_softc *sc;
int reg;
int bit;
{
u_int16_t f;
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_ADDR, reg);
CSR_BARRIER(sc, TL_DIO_ADDR, 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
f = CSR_READ_2(sc, TL_DIO_DATA + (reg & 3));
f &= ~bit;
CSR_BARRIER(sc, TL_DIO_DATA + (reg & 3), 2,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
CSR_WRITE_2(sc, TL_DIO_DATA + (reg & 3), f);
}
/*
* Send an instruction or address to the EEPROM, check for ACK.
*/
static u_int8_t tl_eeprom_putbyte(sc, byte)
struct tl_softc *sc;
int byte;
{
int i, ack = 0;
/*
* Make sure we're in TX mode.
*/
tl_dio_setbit(sc, TL_NETSIO, TL_SIO_ETXEN);
/*
* Feed in each bit and stobe the clock.
*/
for (i = 0x80; i; i >>= 1) {
if (byte & i) {
tl_dio_setbit(sc, TL_NETSIO, TL_SIO_EDATA);
} else {
tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_EDATA);
}
DELAY(1);
tl_dio_setbit(sc, TL_NETSIO, TL_SIO_ECLOK);
DELAY(1);
tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ECLOK);
}
/*
* Turn off TX mode.
*/
tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ETXEN);
/*
* Check for ack.
*/
tl_dio_setbit(sc, TL_NETSIO, TL_SIO_ECLOK);
ack = tl_dio_read8(sc, TL_NETSIO) & TL_SIO_EDATA;
tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ECLOK);
return(ack);
}
/*
* Read a byte of data stored in the EEPROM at address 'addr.'
*/
static u_int8_t tl_eeprom_getbyte(sc, addr, dest)
struct tl_softc *sc;
int addr;
u_int8_t *dest;
{
int i;
u_int8_t byte = 0;
device_t tl_dev = sc->tl_dev;
tl_dio_write8(sc, TL_NETSIO, 0);
EEPROM_START;
/*
* Send write control code to EEPROM.
*/
if (tl_eeprom_putbyte(sc, EEPROM_CTL_WRITE)) {
device_printf(tl_dev, "failed to send write command, status: %x\n",
tl_dio_read8(sc, TL_NETSIO));
return(1);
}
/*
* Send address of byte we want to read.
*/
if (tl_eeprom_putbyte(sc, addr)) {
device_printf(tl_dev, "failed to send address, status: %x\n",
tl_dio_read8(sc, TL_NETSIO));
return(1);
}
EEPROM_STOP;
EEPROM_START;
/*
* Send read control code to EEPROM.
*/
if (tl_eeprom_putbyte(sc, EEPROM_CTL_READ)) {
device_printf(tl_dev, "failed to send write command, status: %x\n",
tl_dio_read8(sc, TL_NETSIO));
return(1);
}
/*
* Start reading bits from EEPROM.
*/
tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ETXEN);
for (i = 0x80; i; i >>= 1) {
tl_dio_setbit(sc, TL_NETSIO, TL_SIO_ECLOK);
DELAY(1);
if (tl_dio_read8(sc, TL_NETSIO) & TL_SIO_EDATA)
byte |= i;
tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ECLOK);
DELAY(1);
}
EEPROM_STOP;
/*
* No ACK generated for read, so just return byte.
*/
*dest = byte;
return(0);
}
/*
* Read a sequence of bytes from the EEPROM.
*/
static int
tl_read_eeprom(sc, dest, off, cnt)
struct tl_softc *sc;
caddr_t dest;
int off;
int cnt;
{
int err = 0, i;
u_int8_t byte = 0;
for (i = 0; i < cnt; i++) {
err = tl_eeprom_getbyte(sc, off + i, &byte);
if (err)
break;
*(dest + i) = byte;
}
return(err ? 1 : 0);
}
#define TL_SIO_MII (TL_SIO_MCLK | TL_SIO_MDATA | TL_SIO_MTXEN)
/*
* Read the MII serial port for the MII bit-bang module.
*/
static uint32_t
tl_mii_bitbang_read(device_t dev)
{
struct tl_softc *sc;
uint32_t val;
sc = device_get_softc(dev);
val = tl_dio_read8(sc, TL_NETSIO) & TL_SIO_MII;
CSR_BARRIER(sc, TL_NETSIO, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return (val);
}
/*
* Write the MII serial port for the MII bit-bang module.
*/
static void
tl_mii_bitbang_write(device_t dev, uint32_t val)
{
struct tl_softc *sc;
sc = device_get_softc(dev);
val = (tl_dio_read8(sc, TL_NETSIO) & ~TL_SIO_MII) | val;
CSR_BARRIER(sc, TL_NETSIO, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
tl_dio_write8(sc, TL_NETSIO, val);
CSR_BARRIER(sc, TL_NETSIO, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
}
static int
tl_miibus_readreg(dev, phy, reg)
device_t dev;
int phy, reg;
{
struct tl_softc *sc;
int minten, val;
sc = device_get_softc(dev);
/*
* Turn off MII interrupt by forcing MINTEN low.
*/
minten = tl_dio_read8(sc, TL_NETSIO) & TL_SIO_MINTEN;
if (minten) {
tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MINTEN);
}
val = mii_bitbang_readreg(dev, &tl_mii_bitbang_ops, phy, reg);
/* Reenable interrupts. */
if (minten) {
tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MINTEN);
}
return (val);
}
static int
tl_miibus_writereg(dev, phy, reg, data)
device_t dev;
int phy, reg, data;
{
struct tl_softc *sc;
int minten;
sc = device_get_softc(dev);
/*
* Turn off MII interrupt by forcing MINTEN low.
*/
minten = tl_dio_read8(sc, TL_NETSIO) & TL_SIO_MINTEN;
if (minten) {
tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MINTEN);
}
mii_bitbang_writereg(dev, &tl_mii_bitbang_ops, phy, reg, data);
/* Reenable interrupts. */
if (minten) {
tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MINTEN);
}
return(0);
}
static void
tl_miibus_statchg(dev)
device_t dev;
{
struct tl_softc *sc;
struct mii_data *mii;
sc = device_get_softc(dev);
mii = device_get_softc(sc->tl_miibus);
if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
tl_dio_setbit(sc, TL_NETCMD, TL_CMD_DUPLEX);
} else {
tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_DUPLEX);
}
}
/*
* Set modes for bitrate devices.
*/
static void
tl_setmode(sc, media)
struct tl_softc *sc;
int media;
{
if (IFM_SUBTYPE(media) == IFM_10_5)
tl_dio_setbit(sc, TL_ACOMMIT, TL_AC_MTXD1);
if (IFM_SUBTYPE(media) == IFM_10_T) {
tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_MTXD1);
if ((media & IFM_GMASK) == IFM_FDX) {
tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_MTXD3);
tl_dio_setbit(sc, TL_NETCMD, TL_CMD_DUPLEX);
} else {
tl_dio_setbit(sc, TL_ACOMMIT, TL_AC_MTXD3);
tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_DUPLEX);
}
}
}
/*
* Calculate the hash of a MAC address for programming the multicast hash
* table. This hash is simply the address split into 6-bit chunks
* XOR'd, e.g.
* byte: 000000|00 1111|1111 22|222222|333333|33 4444|4444 55|555555
* bit: 765432|10 7654|3210 76|543210|765432|10 7654|3210 76|543210
* Bytes 0-2 and 3-5 are symmetrical, so are folded together. Then
* the folded 24-bit value is split into 6-bit portions and XOR'd.
*/
static uint32_t
tl_mchash(addr)
const uint8_t *addr;
{
int t;
t = (addr[0] ^ addr[3]) << 16 | (addr[1] ^ addr[4]) << 8 |
(addr[2] ^ addr[5]);
return ((t >> 18) ^ (t >> 12) ^ (t >> 6) ^ t) & 0x3f;
}
/*
* The ThunderLAN has a perfect MAC address filter in addition to
* the multicast hash filter. The perfect filter can be programmed
* with up to four MAC addresses. The first one is always used to
* hold the station address, which leaves us free to use the other
* three for multicast addresses.
*/
static void
tl_setfilt(sc, addr, slot)
struct tl_softc *sc;
caddr_t addr;
int slot;
{
int i;
u_int16_t regaddr;
regaddr = TL_AREG0_B5 + (slot * ETHER_ADDR_LEN);
for (i = 0; i < ETHER_ADDR_LEN; i++)
tl_dio_write8(sc, regaddr + i, *(addr + i));
}
/*
* XXX In FreeBSD 3.0, multicast addresses are managed using a doubly
* linked list. This is fine, except addresses are added from the head
* end of the list. We want to arrange for 224.0.0.1 (the "all hosts")
* group to always be in the perfect filter, but as more groups are added,
* the 224.0.0.1 entry (which is always added first) gets pushed down
* the list and ends up at the tail. So after 3 or 4 multicast groups
* are added, the all-hosts entry gets pushed out of the perfect filter
* and into the hash table.
*
* Because the multicast list is a doubly-linked list as opposed to a
* circular queue, we don't have the ability to just grab the tail of
* the list and traverse it backwards. Instead, we have to traverse
* the list once to find the tail, then traverse it again backwards to
* update the multicast filter.
*/
static void
tl_setmulti(sc)
struct tl_softc *sc;
{
struct ifnet *ifp;
u_int32_t hashes[2] = { 0, 0 };
int h, i;
struct ifmultiaddr *ifma;
u_int8_t dummy[] = { 0, 0, 0, 0, 0 ,0 };
ifp = sc->tl_ifp;
/* First, zot all the existing filters. */
for (i = 1; i < 4; i++)
tl_setfilt(sc, (caddr_t)&dummy, i);
tl_dio_write32(sc, TL_HASH1, 0);
tl_dio_write32(sc, TL_HASH2, 0);
/* Now program new ones. */
if (ifp->if_flags & IFF_ALLMULTI) {
hashes[0] = 0xFFFFFFFF;
hashes[1] = 0xFFFFFFFF;
} else {
i = 1;
if_maddr_rlock(ifp);
/* XXX want to maintain reverse semantics - pop list and re-add? */
CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
/*
* Program the first three multicast groups
* into the perfect filter. For all others,
* use the hash table.
*/
if (i < 4) {
tl_setfilt(sc,
LLADDR((struct sockaddr_dl *)ifma->ifma_addr), i);
i++;
continue;
}
h = tl_mchash(
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
if (h < 32)
hashes[0] |= (1 << h);
else
hashes[1] |= (1 << (h - 32));
}
if_maddr_runlock(ifp);
}
tl_dio_write32(sc, TL_HASH1, hashes[0]);
tl_dio_write32(sc, TL_HASH2, hashes[1]);
}
/*
* This routine is recommended by the ThunderLAN manual to insure that
* the internal PHY is powered up correctly. It also recommends a one
* second pause at the end to 'wait for the clocks to start' but in my
* experience this isn't necessary.
*/
static void
tl_hardreset(dev)
device_t dev;
{
int i;
u_int16_t flags;
mii_bitbang_sync(dev, &tl_mii_bitbang_ops);
flags = BMCR_LOOP|BMCR_ISO|BMCR_PDOWN;
for (i = 0; i < MII_NPHY; i++)
tl_miibus_writereg(dev, i, MII_BMCR, flags);
tl_miibus_writereg(dev, 31, MII_BMCR, BMCR_ISO);
DELAY(50000);
tl_miibus_writereg(dev, 31, MII_BMCR, BMCR_LOOP|BMCR_ISO);
mii_bitbang_sync(dev, &tl_mii_bitbang_ops);
while(tl_miibus_readreg(dev, 31, MII_BMCR) & BMCR_RESET);
DELAY(50000);
}
static void
tl_softreset(sc, internal)
struct tl_softc *sc;
int internal;
{
u_int32_t cmd, dummy, i;
/* Assert the adapter reset bit. */
CMD_SET(sc, TL_CMD_ADRST);
/* Turn off interrupts */
CMD_SET(sc, TL_CMD_INTSOFF);
/* First, clear the stats registers. */
for (i = 0; i < 5; i++)
dummy = tl_dio_read32(sc, TL_TXGOODFRAMES);
/* Clear Areg and Hash registers */
for (i = 0; i < 8; i++)
tl_dio_write32(sc, TL_AREG0_B5, 0x00000000);
/*
* Set up Netconfig register. Enable one channel and
* one fragment mode.
*/
tl_dio_setbit16(sc, TL_NETCONFIG, TL_CFG_ONECHAN|TL_CFG_ONEFRAG);
if (internal && !sc->tl_bitrate) {
tl_dio_setbit16(sc, TL_NETCONFIG, TL_CFG_PHYEN);
} else {
tl_dio_clrbit16(sc, TL_NETCONFIG, TL_CFG_PHYEN);
}
/* Handle cards with bitrate devices. */
if (sc->tl_bitrate)
tl_dio_setbit16(sc, TL_NETCONFIG, TL_CFG_BITRATE);
/*
* Load adapter irq pacing timer and tx threshold.
* We make the transmit threshold 1 initially but we may
* change that later.
*/
cmd = CSR_READ_4(sc, TL_HOSTCMD);
cmd |= TL_CMD_NES;
cmd &= ~(TL_CMD_RT|TL_CMD_EOC|TL_CMD_ACK_MASK|TL_CMD_CHSEL_MASK);
CMD_PUT(sc, cmd | (TL_CMD_LDTHR | TX_THR));
CMD_PUT(sc, cmd | (TL_CMD_LDTMR | 0x00000003));
/* Unreset the MII */
tl_dio_setbit(sc, TL_NETSIO, TL_SIO_NMRST);
/* Take the adapter out of reset */
tl_dio_setbit(sc, TL_NETCMD, TL_CMD_NRESET|TL_CMD_NWRAP);
/* Wait for things to settle down a little. */
DELAY(500);
}
/*
* Probe for a ThunderLAN chip. Check the PCI vendor and device IDs
* against our list and return its name if we find a match.
*/
static int
tl_probe(dev)
device_t dev;
{
const struct tl_type *t;
t = tl_devs;
while(t->tl_name != NULL) {
if ((pci_get_vendor(dev) == t->tl_vid) &&
(pci_get_device(dev) == t->tl_did)) {
device_set_desc(dev, t->tl_name);
return (BUS_PROBE_DEFAULT);
}
t++;
}
return(ENXIO);
}
static int
tl_attach(dev)
device_t dev;
{
u_int16_t did, vid;
const struct tl_type *t;
struct ifnet *ifp;
struct tl_softc *sc;
int error, flags, i, rid, unit;
u_char eaddr[6];
vid = pci_get_vendor(dev);
did = pci_get_device(dev);
sc = device_get_softc(dev);
sc->tl_dev = dev;
unit = device_get_unit(dev);
t = tl_devs;
while(t->tl_name != NULL) {
if (vid == t->tl_vid && did == t->tl_did)
break;
t++;
}
if (t->tl_name == NULL) {
device_printf(dev, "unknown device!?\n");
return (ENXIO);
}
mtx_init(&sc->tl_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF);
/*
* Map control/status registers.
*/
pci_enable_busmaster(dev);
#ifdef TL_USEIOSPACE
rid = TL_PCI_LOIO;
sc->tl_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
RF_ACTIVE);
/*
* Some cards have the I/O and memory mapped address registers
* reversed. Try both combinations before giving up.
*/
if (sc->tl_res == NULL) {
rid = TL_PCI_LOMEM;
sc->tl_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
RF_ACTIVE);
}
#else
rid = TL_PCI_LOMEM;
sc->tl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->tl_res == NULL) {
rid = TL_PCI_LOIO;
sc->tl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
}
#endif
if (sc->tl_res == NULL) {
device_printf(dev, "couldn't map ports/memory\n");
error = ENXIO;
goto fail;
}
#ifdef notdef
/*
* The ThunderLAN manual suggests jacking the PCI latency
* timer all the way up to its maximum value. I'm not sure
* if this is really necessary, but what the manual wants,
* the manual gets.
*/
command = pci_read_config(dev, TL_PCI_LATENCY_TIMER, 4);
command |= 0x0000FF00;
pci_write_config(dev, TL_PCI_LATENCY_TIMER, command, 4);
#endif
/* Allocate interrupt */
rid = 0;
sc->tl_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->tl_irq == NULL) {
device_printf(dev, "couldn't map interrupt\n");
error = ENXIO;
goto fail;
}
/*
* Now allocate memory for the TX and RX lists.
*/
sc->tl_ldata = contigmalloc(sizeof(struct tl_list_data), M_DEVBUF,
M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0);
if (sc->tl_ldata == NULL) {
device_printf(dev, "no memory for list buffers!\n");
error = ENXIO;
goto fail;
}
bzero(sc->tl_ldata, sizeof(struct tl_list_data));
if (vid == COMPAQ_VENDORID || vid == TI_VENDORID)
sc->tl_eeaddr = TL_EEPROM_EADDR;
if (vid == OLICOM_VENDORID)
sc->tl_eeaddr = TL_EEPROM_EADDR_OC;
/* Reset the adapter. */
tl_softreset(sc, 1);
tl_hardreset(dev);
tl_softreset(sc, 1);
/*
* Get station address from the EEPROM.
*/
if (tl_read_eeprom(sc, eaddr, sc->tl_eeaddr, ETHER_ADDR_LEN)) {
device_printf(dev, "failed to read station address\n");
error = ENXIO;
goto fail;
}
/*
* XXX Olicom, in its desire to be different from the
* rest of the world, has done strange things with the
* encoding of the station address in the EEPROM. First
* of all, they store the address at offset 0xF8 rather
* than at 0x83 like the ThunderLAN manual suggests.
* Second, they store the address in three 16-bit words in
* network byte order, as opposed to storing it sequentially
* like all the other ThunderLAN cards. In order to get
* the station address in a form that matches what the Olicom
* diagnostic utility specifies, we have to byte-swap each
* word. To make things even more confusing, neither 00:00:28
* nor 00:00:24 appear in the IEEE OUI database.
*/
if (vid == OLICOM_VENDORID) {
for (i = 0; i < ETHER_ADDR_LEN; i += 2) {
u_int16_t *p;
p = (u_int16_t *)&eaddr[i];
*p = ntohs(*p);
}
}
ifp = sc->tl_ifp = if_alloc(IFT_ETHER);
if (ifp == NULL) {
device_printf(dev, "can not if_alloc()\n");
error = ENOSPC;
goto fail;
}
ifp->if_softc = sc;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = tl_ioctl;
ifp->if_start = tl_start;
ifp->if_init = tl_init;
ifp->if_snd.ifq_maxlen = TL_TX_LIST_CNT - 1;
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capenable |= IFCAP_VLAN_MTU;
callout_init_mtx(&sc->tl_stat_callout, &sc->tl_mtx, 0);
/* Reset the adapter again. */
tl_softreset(sc, 1);
tl_hardreset(dev);
tl_softreset(sc, 1);
/*
* Do MII setup. If no PHYs are found, then this is a
* bitrate ThunderLAN chip that only supports 10baseT
* and AUI/BNC.
* XXX mii_attach() can fail for reason different than
* no PHYs found!
*/
flags = 0;
if (vid == COMPAQ_VENDORID) {
if (did == COMPAQ_DEVICEID_NETEL_10_100_PROLIANT ||
did == COMPAQ_DEVICEID_NETFLEX_3P_INTEGRATED ||
did == COMPAQ_DEVICEID_NETFLEX_3P_BNC ||
did == COMPAQ_DEVICEID_NETEL_10_T2_UTP_COAX)
flags |= MIIF_MACPRIV0;
if (did == COMPAQ_DEVICEID_NETEL_10 ||
did == COMPAQ_DEVICEID_NETEL_10_100_DUAL ||
did == COMPAQ_DEVICEID_NETFLEX_3P ||
did == COMPAQ_DEVICEID_NETEL_10_100_EMBEDDED)
flags |= MIIF_MACPRIV1;
} else if (vid == OLICOM_VENDORID && did == OLICOM_DEVICEID_OC2183)
flags |= MIIF_MACPRIV0 | MIIF_MACPRIV1;
if (mii_attach(dev, &sc->tl_miibus, ifp, tl_ifmedia_upd,
tl_ifmedia_sts, BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0)) {
struct ifmedia *ifm;
sc->tl_bitrate = 1;
ifmedia_init(&sc->ifmedia, 0, tl_ifmedia_upd, tl_ifmedia_sts);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL);
ifmedia_set(&sc->ifmedia, IFM_ETHER|IFM_10_T);
/* Reset again, this time setting bitrate mode. */
tl_softreset(sc, 1);
ifm = &sc->ifmedia;
ifm->ifm_media = ifm->ifm_cur->ifm_media;
tl_ifmedia_upd(ifp);
}
/*
* Call MI attach routine.
*/
ether_ifattach(ifp, eaddr);
/* Hook interrupt last to avoid having to lock softc */
error = bus_setup_intr(dev, sc->tl_irq, INTR_TYPE_NET | INTR_MPSAFE,
NULL, tl_intr, sc, &sc->tl_intrhand);
if (error) {
device_printf(dev, "couldn't set up irq\n");
ether_ifdetach(ifp);
goto fail;
}
fail:
if (error)
tl_detach(dev);
return(error);
}
/*
* Shutdown hardware and free up resources. This can be called any
* time after the mutex has been initialized. It is called in both
* the error case in attach and the normal detach case so it needs
* to be careful about only freeing resources that have actually been
* allocated.
*/
static int
tl_detach(dev)
device_t dev;
{
struct tl_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
KASSERT(mtx_initialized(&sc->tl_mtx), ("tl mutex not initialized"));
ifp = sc->tl_ifp;
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
ether_ifdetach(ifp);
TL_LOCK(sc);
tl_stop(sc);
TL_UNLOCK(sc);
callout_drain(&sc->tl_stat_callout);
}
if (sc->tl_miibus)
device_delete_child(dev, sc->tl_miibus);
bus_generic_detach(dev);
if (sc->tl_ldata)
contigfree(sc->tl_ldata, sizeof(struct tl_list_data), M_DEVBUF);
if (sc->tl_bitrate)
ifmedia_removeall(&sc->ifmedia);
if (sc->tl_intrhand)
bus_teardown_intr(dev, sc->tl_irq, sc->tl_intrhand);
if (sc->tl_irq)
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->tl_irq);
if (sc->tl_res)
bus_release_resource(dev, TL_RES, TL_RID, sc->tl_res);
if (ifp)
if_free(ifp);
mtx_destroy(&sc->tl_mtx);
return(0);
}
/*
* Initialize the transmit lists.
*/
static int
tl_list_tx_init(sc)
struct tl_softc *sc;
{
struct tl_chain_data *cd;
struct tl_list_data *ld;
int i;
cd = &sc->tl_cdata;
ld = sc->tl_ldata;
for (i = 0; i < TL_TX_LIST_CNT; i++) {
cd->tl_tx_chain[i].tl_ptr = &ld->tl_tx_list[i];
if (i == (TL_TX_LIST_CNT - 1))
cd->tl_tx_chain[i].tl_next = NULL;
else
cd->tl_tx_chain[i].tl_next = &cd->tl_tx_chain[i + 1];
}
cd->tl_tx_free = &cd->tl_tx_chain[0];
cd->tl_tx_tail = cd->tl_tx_head = NULL;
sc->tl_txeoc = 1;
return(0);
}
/*
* Initialize the RX lists and allocate mbufs for them.
*/
static int
tl_list_rx_init(sc)
struct tl_softc *sc;
{
struct tl_chain_data *cd;
struct tl_list_data *ld;
int i;
cd = &sc->tl_cdata;
ld = sc->tl_ldata;
for (i = 0; i < TL_RX_LIST_CNT; i++) {
cd->tl_rx_chain[i].tl_ptr =
(struct tl_list_onefrag *)&ld->tl_rx_list[i];
if (tl_newbuf(sc, &cd->tl_rx_chain[i]) == ENOBUFS)
return(ENOBUFS);
if (i == (TL_RX_LIST_CNT - 1)) {
cd->tl_rx_chain[i].tl_next = NULL;
ld->tl_rx_list[i].tlist_fptr = 0;
} else {
cd->tl_rx_chain[i].tl_next = &cd->tl_rx_chain[i + 1];
ld->tl_rx_list[i].tlist_fptr =
vtophys(&ld->tl_rx_list[i + 1]);
}
}
cd->tl_rx_head = &cd->tl_rx_chain[0];
cd->tl_rx_tail = &cd->tl_rx_chain[TL_RX_LIST_CNT - 1];
return(0);
}
static int
tl_newbuf(sc, c)
struct tl_softc *sc;
struct tl_chain_onefrag *c;
{
struct mbuf *m_new = NULL;
m_new = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
if (m_new == NULL)
return(ENOBUFS);
c->tl_mbuf = m_new;
c->tl_next = NULL;
c->tl_ptr->tlist_frsize = MCLBYTES;
c->tl_ptr->tlist_fptr = 0;
c->tl_ptr->tl_frag.tlist_dadr = vtophys(mtod(m_new, caddr_t));
c->tl_ptr->tl_frag.tlist_dcnt = MCLBYTES;
c->tl_ptr->tlist_cstat = TL_CSTAT_READY;
return(0);
}
/*
* Interrupt handler for RX 'end of frame' condition (EOF). This
* tells us that a full ethernet frame has been captured and we need
* to handle it.
*
* Reception is done using 'lists' which consist of a header and a
* series of 10 data count/data address pairs that point to buffers.
* Initially you're supposed to create a list, populate it with pointers
* to buffers, then load the physical address of the list into the
* ch_parm register. The adapter is then supposed to DMA the received
* frame into the buffers for you.
*
* To make things as fast as possible, we have the chip DMA directly
* into mbufs. This saves us from having to do a buffer copy: we can
* just hand the mbufs directly to ether_input(). Once the frame has
* been sent on its way, the 'list' structure is assigned a new buffer
* and moved to the end of the RX chain. As long we we stay ahead of
* the chip, it will always think it has an endless receive channel.
*
* If we happen to fall behind and the chip manages to fill up all of
* the buffers, it will generate an end of channel interrupt and wait
* for us to empty the chain and restart the receiver.
*/
static int
tl_intvec_rxeof(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
int r = 0, total_len = 0;
struct ether_header *eh;
struct mbuf *m;
struct ifnet *ifp;
struct tl_chain_onefrag *cur_rx;
sc = xsc;
ifp = sc->tl_ifp;
TL_LOCK_ASSERT(sc);
while(sc->tl_cdata.tl_rx_head != NULL) {
cur_rx = sc->tl_cdata.tl_rx_head;
if (!(cur_rx->tl_ptr->tlist_cstat & TL_CSTAT_FRAMECMP))
break;
r++;
sc->tl_cdata.tl_rx_head = cur_rx->tl_next;
m = cur_rx->tl_mbuf;
total_len = cur_rx->tl_ptr->tlist_frsize;
if (tl_newbuf(sc, cur_rx) == ENOBUFS) {
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
cur_rx->tl_ptr->tlist_frsize = MCLBYTES;
cur_rx->tl_ptr->tlist_cstat = TL_CSTAT_READY;
cur_rx->tl_ptr->tl_frag.tlist_dcnt = MCLBYTES;
continue;
}
sc->tl_cdata.tl_rx_tail->tl_ptr->tlist_fptr =
vtophys(cur_rx->tl_ptr);
sc->tl_cdata.tl_rx_tail->tl_next = cur_rx;
sc->tl_cdata.tl_rx_tail = cur_rx;
/*
* Note: when the ThunderLAN chip is in 'capture all
* frames' mode, it will receive its own transmissions.
* We drop don't need to process our own transmissions,
* so we drop them here and continue.
*/
eh = mtod(m, struct ether_header *);
/*if (ifp->if_flags & IFF_PROMISC && */
if (!bcmp(eh->ether_shost, IF_LLADDR(sc->tl_ifp),
ETHER_ADDR_LEN)) {
m_freem(m);
continue;
}
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = m->m_len = total_len;
TL_UNLOCK(sc);
(*ifp->if_input)(ifp, m);
TL_LOCK(sc);
}
return(r);
}
/*
* The RX-EOC condition hits when the ch_parm address hasn't been
* initialized or the adapter reached a list with a forward pointer
* of 0 (which indicates the end of the chain). In our case, this means
* the card has hit the end of the receive buffer chain and we need to
* empty out the buffers and shift the pointer back to the beginning again.
*/
static int
tl_intvec_rxeoc(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
int r;
struct tl_chain_data *cd;
sc = xsc;
cd = &sc->tl_cdata;
/* Flush out the receive queue and ack RXEOF interrupts. */
r = tl_intvec_rxeof(xsc, type);
CMD_PUT(sc, TL_CMD_ACK | r | (type & ~(0x00100000)));
r = 1;
cd->tl_rx_head = &cd->tl_rx_chain[0];
cd->tl_rx_tail = &cd->tl_rx_chain[TL_RX_LIST_CNT - 1];
CSR_WRITE_4(sc, TL_CH_PARM, vtophys(sc->tl_cdata.tl_rx_head->tl_ptr));
r |= (TL_CMD_GO|TL_CMD_RT);
return(r);
}
static int
tl_intvec_txeof(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
int r = 0;
struct tl_chain *cur_tx;
sc = xsc;
/*
* Go through our tx list and free mbufs for those
* frames that have been sent.
*/
while (sc->tl_cdata.tl_tx_head != NULL) {
cur_tx = sc->tl_cdata.tl_tx_head;
if (!(cur_tx->tl_ptr->tlist_cstat & TL_CSTAT_FRAMECMP))
break;
sc->tl_cdata.tl_tx_head = cur_tx->tl_next;
r++;
m_freem(cur_tx->tl_mbuf);
cur_tx->tl_mbuf = NULL;
cur_tx->tl_next = sc->tl_cdata.tl_tx_free;
sc->tl_cdata.tl_tx_free = cur_tx;
if (!cur_tx->tl_ptr->tlist_fptr)
break;
}
return(r);
}
/*
* The transmit end of channel interrupt. The adapter triggers this
* interrupt to tell us it hit the end of the current transmit list.
*
* A note about this: it's possible for a condition to arise where
* tl_start() may try to send frames between TXEOF and TXEOC interrupts.
* You have to avoid this since the chip expects things to go in a
* particular order: transmit, acknowledge TXEOF, acknowledge TXEOC.
* When the TXEOF handler is called, it will free all of the transmitted
* frames and reset the tx_head pointer to NULL. However, a TXEOC
* interrupt should be received and acknowledged before any more frames
* are queued for transmission. If tl_statrt() is called after TXEOF
* resets the tx_head pointer but _before_ the TXEOC interrupt arrives,
* it could attempt to issue a transmit command prematurely.
*
* To guard against this, tl_start() will only issue transmit commands
* if the tl_txeoc flag is set, and only the TXEOC interrupt handler
* can set this flag once tl_start() has cleared it.
*/
static int
tl_intvec_txeoc(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
struct ifnet *ifp;
u_int32_t cmd;
sc = xsc;
ifp = sc->tl_ifp;
/* Clear the timeout timer. */
sc->tl_timer = 0;
if (sc->tl_cdata.tl_tx_head == NULL) {
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
sc->tl_cdata.tl_tx_tail = NULL;
sc->tl_txeoc = 1;
} else {
sc->tl_txeoc = 0;
/* First we have to ack the EOC interrupt. */
CMD_PUT(sc, TL_CMD_ACK | 0x00000001 | type);
/* Then load the address of the next TX list. */
CSR_WRITE_4(sc, TL_CH_PARM,
vtophys(sc->tl_cdata.tl_tx_head->tl_ptr));
/* Restart TX channel. */
cmd = CSR_READ_4(sc, TL_HOSTCMD);
cmd &= ~TL_CMD_RT;
cmd |= TL_CMD_GO|TL_CMD_INTSON;
CMD_PUT(sc, cmd);
return(0);
}
return(1);
}
static int
tl_intvec_adchk(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
sc = xsc;
if (type)
device_printf(sc->tl_dev, "adapter check: %x\n",
(unsigned int)CSR_READ_4(sc, TL_CH_PARM));
tl_softreset(sc, 1);
tl_stop(sc);
tl_init_locked(sc);
CMD_SET(sc, TL_CMD_INTSON);
return(0);
}
static int
tl_intvec_netsts(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
u_int16_t netsts;
sc = xsc;
netsts = tl_dio_read16(sc, TL_NETSTS);
tl_dio_write16(sc, TL_NETSTS, netsts);
device_printf(sc->tl_dev, "network status: %x\n", netsts);
return(1);
}
static void
tl_intr(xsc)
void *xsc;
{
struct tl_softc *sc;
struct ifnet *ifp;
int r = 0;
u_int32_t type = 0;
u_int16_t ints = 0;
u_int8_t ivec = 0;
sc = xsc;
TL_LOCK(sc);
/* Disable interrupts */
ints = CSR_READ_2(sc, TL_HOST_INT);
CSR_WRITE_2(sc, TL_HOST_INT, ints);
type = (ints << 16) & 0xFFFF0000;
ivec = (ints & TL_VEC_MASK) >> 5;
ints = (ints & TL_INT_MASK) >> 2;
ifp = sc->tl_ifp;
switch(ints) {
case (TL_INTR_INVALID):
#ifdef DIAGNOSTIC
device_printf(sc->tl_dev, "got an invalid interrupt!\n");
#endif
/* Re-enable interrupts but don't ack this one. */
CMD_PUT(sc, type);
r = 0;
break;
case (TL_INTR_TXEOF):
r = tl_intvec_txeof((void *)sc, type);
break;
case (TL_INTR_TXEOC):
r = tl_intvec_txeoc((void *)sc, type);
break;
case (TL_INTR_STATOFLOW):
tl_stats_update(sc);
r = 1;
break;
case (TL_INTR_RXEOF):
r = tl_intvec_rxeof((void *)sc, type);
break;
case (TL_INTR_DUMMY):
device_printf(sc->tl_dev, "got a dummy interrupt\n");
r = 1;
break;
case (TL_INTR_ADCHK):
if (ivec)
r = tl_intvec_adchk((void *)sc, type);
else
r = tl_intvec_netsts((void *)sc, type);
break;
case (TL_INTR_RXEOC):
r = tl_intvec_rxeoc((void *)sc, type);
break;
default:
device_printf(sc->tl_dev, "bogus interrupt type\n");
break;
}
/* Re-enable interrupts */
if (r) {
CMD_PUT(sc, TL_CMD_ACK | r | type);
}
if (ifp->if_snd.ifq_head != NULL)
tl_start_locked(ifp);
TL_UNLOCK(sc);
}
static void
tl_stats_update(xsc)
void *xsc;
{
struct tl_softc *sc;
struct ifnet *ifp;
struct tl_stats tl_stats;
struct mii_data *mii;
u_int32_t *p;
bzero((char *)&tl_stats, sizeof(struct tl_stats));
sc = xsc;
TL_LOCK_ASSERT(sc);
ifp = sc->tl_ifp;
p = (u_int32_t *)&tl_stats;
CSR_WRITE_2(sc, TL_DIO_ADDR, TL_TXGOODFRAMES|TL_DIO_ADDR_INC);
*p++ = CSR_READ_4(sc, TL_DIO_DATA);
*p++ = CSR_READ_4(sc, TL_DIO_DATA);
*p++ = CSR_READ_4(sc, TL_DIO_DATA);
*p++ = CSR_READ_4(sc, TL_DIO_DATA);
*p++ = CSR_READ_4(sc, TL_DIO_DATA);
if_inc_counter(ifp, IFCOUNTER_OPACKETS, tl_tx_goodframes(tl_stats));
if_inc_counter(ifp, IFCOUNTER_COLLISIONS,
tl_stats.tl_tx_single_collision + tl_stats.tl_tx_multi_collision);
if_inc_counter(ifp, IFCOUNTER_IPACKETS, tl_rx_goodframes(tl_stats));
if_inc_counter(ifp, IFCOUNTER_IERRORS, tl_stats.tl_crc_errors +
tl_stats.tl_code_errors + tl_rx_overrun(tl_stats));
if_inc_counter(ifp, IFCOUNTER_OERRORS, tl_tx_underrun(tl_stats));
if (tl_tx_underrun(tl_stats)) {
u_int8_t tx_thresh;
tx_thresh = tl_dio_read8(sc, TL_ACOMMIT) & TL_AC_TXTHRESH;
if (tx_thresh != TL_AC_TXTHRESH_WHOLEPKT) {
tx_thresh >>= 4;
tx_thresh++;
device_printf(sc->tl_dev, "tx underrun -- increasing "
"tx threshold to %d bytes\n",
(64 * (tx_thresh * 4)));
tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_TXTHRESH);
tl_dio_setbit(sc, TL_ACOMMIT, tx_thresh << 4);
}
}
if (sc->tl_timer > 0 && --sc->tl_timer == 0)
tl_watchdog(sc);
callout_reset(&sc->tl_stat_callout, hz, tl_stats_update, sc);
if (!sc->tl_bitrate) {
mii = device_get_softc(sc->tl_miibus);
mii_tick(mii);
}
}
/*
* Encapsulate an mbuf chain in a list by coupling the mbuf data
* pointers to the fragment pointers.
*/
static int
tl_encap(sc, c, m_head)
struct tl_softc *sc;
struct tl_chain *c;
struct mbuf *m_head;
{
int frag = 0;
struct tl_frag *f = NULL;
int total_len;
struct mbuf *m;
struct ifnet *ifp = sc->tl_ifp;
/*
* Start packing the mbufs in this chain into
* the fragment pointers. Stop when we run out
* of fragments or hit the end of the mbuf chain.
*/
m = m_head;
total_len = 0;
for (m = m_head, frag = 0; m != NULL; m = m->m_next) {
if (m->m_len != 0) {
if (frag == TL_MAXFRAGS)
break;
total_len+= m->m_len;
c->tl_ptr->tl_frag[frag].tlist_dadr =
vtophys(mtod(m, vm_offset_t));
c->tl_ptr->tl_frag[frag].tlist_dcnt = m->m_len;
frag++;
}
}
/*
* Handle special cases.
* Special case #1: we used up all 10 fragments, but
* we have more mbufs left in the chain. Copy the
* data into an mbuf cluster. Note that we don't
* bother clearing the values in the other fragment
* pointers/counters; it wouldn't gain us anything,
* and would waste cycles.
*/
if (m != NULL) {
struct mbuf *m_new = NULL;
MGETHDR(m_new, M_NOWAIT, MT_DATA);
if (m_new == NULL) {
if_printf(ifp, "no memory for tx list\n");
return(1);
}
if (m_head->m_pkthdr.len > MHLEN) {
if (!(MCLGET(m_new, M_NOWAIT))) {
m_freem(m_new);
if_printf(ifp, "no memory for tx list\n");
return(1);
}
}
m_copydata(m_head, 0, m_head->m_pkthdr.len,
mtod(m_new, caddr_t));
m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len;
m_freem(m_head);
m_head = m_new;
f = &c->tl_ptr->tl_frag[0];
f->tlist_dadr = vtophys(mtod(m_new, caddr_t));
f->tlist_dcnt = total_len = m_new->m_len;
frag = 1;
}
/*
* Special case #2: the frame is smaller than the minimum
* frame size. We have to pad it to make the chip happy.
*/
if (total_len < TL_MIN_FRAMELEN) {
if (frag == TL_MAXFRAGS)
if_printf(ifp,
"all frags filled but frame still to small!\n");
f = &c->tl_ptr->tl_frag[frag];
f->tlist_dcnt = TL_MIN_FRAMELEN - total_len;
f->tlist_dadr = vtophys(&sc->tl_ldata->tl_pad);
total_len += f->tlist_dcnt;
frag++;
}
c->tl_mbuf = m_head;
c->tl_ptr->tl_frag[frag - 1].tlist_dcnt |= TL_LAST_FRAG;
c->tl_ptr->tlist_frsize = total_len;
c->tl_ptr->tlist_cstat = TL_CSTAT_READY;
c->tl_ptr->tlist_fptr = 0;
return(0);
}
/*
* Main transmit routine. To avoid having to do mbuf copies, we put pointers
* to the mbuf data regions directly in the transmit lists. We also save a
* copy of the pointers since the transmit list fragment pointers are
* physical addresses.
*/
static void
tl_start(ifp)
struct ifnet *ifp;
{
struct tl_softc *sc;
sc = ifp->if_softc;
TL_LOCK(sc);
tl_start_locked(ifp);
TL_UNLOCK(sc);
}
static void
tl_start_locked(ifp)
struct ifnet *ifp;
{
struct tl_softc *sc;
struct mbuf *m_head = NULL;
u_int32_t cmd;
struct tl_chain *prev = NULL, *cur_tx = NULL, *start_tx;
sc = ifp->if_softc;
TL_LOCK_ASSERT(sc);
/*
* Check for an available queue slot. If there are none,
* punt.
*/
if (sc->tl_cdata.tl_tx_free == NULL) {
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
return;
}
start_tx = sc->tl_cdata.tl_tx_free;
while(sc->tl_cdata.tl_tx_free != NULL) {
IF_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL)
break;
/* Pick a chain member off the free list. */
cur_tx = sc->tl_cdata.tl_tx_free;
sc->tl_cdata.tl_tx_free = cur_tx->tl_next;
cur_tx->tl_next = NULL;
/* Pack the data into the list. */
tl_encap(sc, cur_tx, m_head);
/* Chain it together */
if (prev != NULL) {
prev->tl_next = cur_tx;
prev->tl_ptr->tlist_fptr = vtophys(cur_tx->tl_ptr);
}
prev = cur_tx;
/*
* If there's a BPF listener, bounce a copy of this frame
* to him.
*/
BPF_MTAP(ifp, cur_tx->tl_mbuf);
}
/*
* If there are no packets queued, bail.
*/
if (cur_tx == NULL)
return;
/*
* That's all we can stands, we can't stands no more.
* If there are no other transfers pending, then issue the
* TX GO command to the adapter to start things moving.
* Otherwise, just leave the data in the queue and let
* the EOF/EOC interrupt handler send.
*/
if (sc->tl_cdata.tl_tx_head == NULL) {
sc->tl_cdata.tl_tx_head = start_tx;
sc->tl_cdata.tl_tx_tail = cur_tx;
if (sc->tl_txeoc) {
sc->tl_txeoc = 0;
CSR_WRITE_4(sc, TL_CH_PARM, vtophys(start_tx->tl_ptr));
cmd = CSR_READ_4(sc, TL_HOSTCMD);
cmd &= ~TL_CMD_RT;
cmd |= TL_CMD_GO|TL_CMD_INTSON;
CMD_PUT(sc, cmd);
}
} else {
sc->tl_cdata.tl_tx_tail->tl_next = start_tx;
sc->tl_cdata.tl_tx_tail = cur_tx;
}
/*
* Set a timeout in case the chip goes out to lunch.
*/
sc->tl_timer = 5;
}
static void
tl_init(xsc)
void *xsc;
{
struct tl_softc *sc = xsc;
TL_LOCK(sc);
tl_init_locked(sc);
TL_UNLOCK(sc);
}
static void
tl_init_locked(sc)
struct tl_softc *sc;
{
struct ifnet *ifp = sc->tl_ifp;
struct mii_data *mii;
TL_LOCK_ASSERT(sc);
ifp = sc->tl_ifp;
/*
* Cancel pending I/O.
*/
tl_stop(sc);
/* Initialize TX FIFO threshold */
tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_TXTHRESH);
tl_dio_setbit(sc, TL_ACOMMIT, TL_AC_TXTHRESH_16LONG);
/* Set PCI burst size */
tl_dio_write8(sc, TL_BSIZEREG, TL_RXBURST_16LONG|TL_TXBURST_16LONG);
/*
* Set 'capture all frames' bit for promiscuous mode.
*/
if (ifp->if_flags & IFF_PROMISC)
tl_dio_setbit(sc, TL_NETCMD, TL_CMD_CAF);
else
tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_CAF);
/*
* Set capture broadcast bit to capture broadcast frames.
*/
if (ifp->if_flags & IFF_BROADCAST)
tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_NOBRX);
else
tl_dio_setbit(sc, TL_NETCMD, TL_CMD_NOBRX);
tl_dio_write16(sc, TL_MAXRX, MCLBYTES);
/* Init our MAC address */
tl_setfilt(sc, IF_LLADDR(sc->tl_ifp), 0);
/* Init multicast filter, if needed. */
tl_setmulti(sc);
/* Init circular RX list. */
if (tl_list_rx_init(sc) == ENOBUFS) {
device_printf(sc->tl_dev,
"initialization failed: no memory for rx buffers\n");
tl_stop(sc);
return;
}
/* Init TX pointers. */
tl_list_tx_init(sc);
/* Enable PCI interrupts. */
CMD_SET(sc, TL_CMD_INTSON);
/* Load the address of the rx list */
CMD_SET(sc, TL_CMD_RT);
CSR_WRITE_4(sc, TL_CH_PARM, vtophys(&sc->tl_ldata->tl_rx_list[0]));
if (!sc->tl_bitrate) {
if (sc->tl_miibus != NULL) {
mii = device_get_softc(sc->tl_miibus);
mii_mediachg(mii);
}
} else {
tl_ifmedia_upd(ifp);
}
/* Send the RX go command */
CMD_SET(sc, TL_CMD_GO|TL_CMD_NES|TL_CMD_RT);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
/* Start the stats update counter */
callout_reset(&sc->tl_stat_callout, hz, tl_stats_update, sc);
}
/*
* Set media options.
*/
static int
tl_ifmedia_upd(ifp)
struct ifnet *ifp;
{
struct tl_softc *sc;
struct mii_data *mii = NULL;
sc = ifp->if_softc;
TL_LOCK(sc);
if (sc->tl_bitrate)
tl_setmode(sc, sc->ifmedia.ifm_media);
else {
mii = device_get_softc(sc->tl_miibus);
mii_mediachg(mii);
}
TL_UNLOCK(sc);
return(0);
}
/*
* Report current media status.
*/
static void
tl_ifmedia_sts(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct tl_softc *sc;
struct mii_data *mii;
sc = ifp->if_softc;
TL_LOCK(sc);
ifmr->ifm_active = IFM_ETHER;
if (sc->tl_bitrate) {
if (tl_dio_read8(sc, TL_ACOMMIT) & TL_AC_MTXD1)
ifmr->ifm_active = IFM_ETHER|IFM_10_5;
else
ifmr->ifm_active = IFM_ETHER|IFM_10_T;
if (tl_dio_read8(sc, TL_ACOMMIT) & TL_AC_MTXD3)
ifmr->ifm_active |= IFM_HDX;
else
ifmr->ifm_active |= IFM_FDX;
return;
} else {
mii = device_get_softc(sc->tl_miibus);
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
}
TL_UNLOCK(sc);
}
static int
tl_ioctl(ifp, command, data)
struct ifnet *ifp;
u_long command;
caddr_t data;
{
struct tl_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *) data;
int error = 0;
switch(command) {
case SIOCSIFFLAGS:
TL_LOCK(sc);
if (ifp->if_flags & IFF_UP) {
if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
ifp->if_flags & IFF_PROMISC &&
!(sc->tl_if_flags & IFF_PROMISC)) {
tl_dio_setbit(sc, TL_NETCMD, TL_CMD_CAF);
tl_setmulti(sc);
} else if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
!(ifp->if_flags & IFF_PROMISC) &&
sc->tl_if_flags & IFF_PROMISC) {
tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_CAF);
tl_setmulti(sc);
} else
tl_init_locked(sc);
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
tl_stop(sc);
}
}
sc->tl_if_flags = ifp->if_flags;
TL_UNLOCK(sc);
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
TL_LOCK(sc);
tl_setmulti(sc);
TL_UNLOCK(sc);
error = 0;
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
if (sc->tl_bitrate)
error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command);
else {
struct mii_data *mii;
mii = device_get_softc(sc->tl_miibus);
error = ifmedia_ioctl(ifp, ifr,
&mii->mii_media, command);
}
break;
default:
error = ether_ioctl(ifp, command, data);
break;
}
return(error);
}
static void
tl_watchdog(sc)
struct tl_softc *sc;
{
struct ifnet *ifp;
TL_LOCK_ASSERT(sc);
ifp = sc->tl_ifp;
if_printf(ifp, "device timeout\n");
if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
tl_softreset(sc, 1);
tl_init_locked(sc);
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void
tl_stop(sc)
struct tl_softc *sc;
{
int i;
struct ifnet *ifp;
TL_LOCK_ASSERT(sc);
ifp = sc->tl_ifp;
/* Stop the stats updater. */
callout_stop(&sc->tl_stat_callout);
/* Stop the transmitter */
CMD_CLR(sc, TL_CMD_RT);
CMD_SET(sc, TL_CMD_STOP);
CSR_WRITE_4(sc, TL_CH_PARM, 0);
/* Stop the receiver */
CMD_SET(sc, TL_CMD_RT);
CMD_SET(sc, TL_CMD_STOP);
CSR_WRITE_4(sc, TL_CH_PARM, 0);
/*
* Disable host interrupts.
*/
CMD_SET(sc, TL_CMD_INTSOFF);
/*
* Clear list pointer.
*/
CSR_WRITE_4(sc, TL_CH_PARM, 0);
/*
* Free the RX lists.
*/
for (i = 0; i < TL_RX_LIST_CNT; i++) {
if (sc->tl_cdata.tl_rx_chain[i].tl_mbuf != NULL) {
m_freem(sc->tl_cdata.tl_rx_chain[i].tl_mbuf);
sc->tl_cdata.tl_rx_chain[i].tl_mbuf = NULL;
}
}
bzero((char *)&sc->tl_ldata->tl_rx_list,
sizeof(sc->tl_ldata->tl_rx_list));
/*
* Free the TX list buffers.
*/
for (i = 0; i < TL_TX_LIST_CNT; i++) {
if (sc->tl_cdata.tl_tx_chain[i].tl_mbuf != NULL) {
m_freem(sc->tl_cdata.tl_tx_chain[i].tl_mbuf);
sc->tl_cdata.tl_tx_chain[i].tl_mbuf = NULL;
}
}
bzero((char *)&sc->tl_ldata->tl_tx_list,
sizeof(sc->tl_ldata->tl_tx_list));
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
}
/*
* Stop all chip I/O so that the kernel's probe routines don't
* get confused by errant DMAs when rebooting.
*/
static int
tl_shutdown(dev)
device_t dev;
{
struct tl_softc *sc;
sc = device_get_softc(dev);
TL_LOCK(sc);
tl_stop(sc);
TL_UNLOCK(sc);
return (0);
}
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