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freebsd-dev/sys/pci/if_tl.c
Bill Paul d31f26f41e Ignore 'invalid' interrupts that occur while the interface is down. 
These are probably generated by other PCI devices sharing the TLAN's
interrupt. The programmer's guide says to simply re-enable interrupts
and return if one of these is detected.

Prompted by bug report from: Bill Fenner
1998-05-26 23:42:24 +00:00

2652 lines
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/*
* 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.
*
* $Id: if_tl.c,v 1.5 1998/05/24 00:56:49 wpaul Exp $
*/
/*
* 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 three 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)
*
* 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). 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. A serial EEPROM is also
* attached to the ThunderLAN chip to provide power-up default register
* settings and for storing the adapter's stattion address. Although not
* supported by this driver, the ThunderLAN chip can also be connected
* to token ring PHYs.
*
* It is important to note that while it is possible to have multiple
* PHYs attached to the ThunderLAN's MII, only one PHY may be active at
* any time. (This makes me wonder exactly how the dual port Compaq
* adapter is supposed to work.) This driver attempts to compensate for
* this in the following way:
*
* When the ThunderLAN chip is probed, the probe routine attempts to
* locate all attached PHYs by checking all 32 possible PHY addresses
* (0x00 to 0x1F). Each PHY is attached as a separate logical interface.
* The driver allows any one interface to be brought up at any given
* time: if an attempt is made to bring up a second PHY while another
* PHY is already enabled, the driver will return an error.
*
* The ThunderLAN has a set of registers which can be used to issue
* command, 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 transfered 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 "bpfilter.h"
#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/socket.h>
#include <sys/syslog.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_mib.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/ip.h>
#include <netinet/if_ether.h>
#endif
#ifdef IPX
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <vm/vm.h> /* for vtophys */
#include <vm/vm_param.h> /* for vtophys */
#include <vm/pmap.h> /* for vtophys */
#include <machine/clock.h> /* for DELAY */
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/if_tlreg.h>
#ifndef lint
static char rcsid[] =
"$Id: if_tl.c,v 1.5 1998/05/24 00:56:49 wpaul Exp $";
#endif
/*
* Various supported device vendors/types and their names.
*/
static 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_DESKPRO_4000_5233MMX,
"Compaq Deskpro 4000 5233MMX" },
{ 0, 0, NULL }
};
/*
* Various supported PHY vendors/types and their names. Note that
* this driver will work with pretty much any MII-compliant PHY,
* so failure to positively identify the chip is not a fatal error.
*/
static struct tl_type tl_phys[] = {
{ TI_PHY_VENDORID, TI_PHY_10BT, "<TI ThunderLAN 10BT (internal)>" },
{ TI_PHY_VENDORID, TI_PHY_100VGPMI, "<TI TNETE211 100VG Any-LAN>" },
{ NS_PHY_VENDORID, NS_PHY_83840A, "<National Semiconductor DP83840A>"},
{ LEVEL1_PHY_VENDORID, LEVEL1_PHY_LXT970, "<Level 1 LXT970>" },
{ INTEL_PHY_VENDORID, INTEL_PHY_82555, "<Intel 82555>" },
{ SEEQ_PHY_VENDORID, SEEQ_PHY_80220, "<SEEQ 80220>" },
{ 0, 0, "<MII-compliant physical interface>" }
};
static struct tl_iflist *tl_iflist = NULL;
static unsigned long tl_count;
static char *tl_probe __P((pcici_t, pcidi_t));
static void tl_attach_ctlr __P((pcici_t, int));
static int tl_attach_phy __P((struct tl_csr *, int, char *,
int, struct tl_iflist *));
static int tl_intvec_invalid __P((void *, u_int32_t));
static int tl_intvec_dummy __P((void *, u_int32_t));
static int tl_intvec_rxeoc __P((void *, u_int32_t));
static int tl_intvec_txeoc __P((void *, u_int32_t));
static int tl_intvec_txeof __P((void *, u_int32_t));
static int tl_intvec_rxeof __P((void *, u_int32_t));
static int tl_intvec_adchk __P((void *, u_int32_t));
static int tl_intvec_netsts __P((void *, u_int32_t));
static int tl_intvec_statoflow __P((void *, u_int32_t));
static int tl_newbuf __P((struct tl_softc *, struct tl_chain *));
static void tl_stats_update __P((void *));
static int tl_encap __P((struct tl_softc *, struct tl_chain *,
struct mbuf *));
static void tl_intr __P((void *));
static void tl_start __P((struct ifnet *));
static int tl_ioctl __P((struct ifnet *, int, caddr_t));
static void tl_init __P((void *));
static void tl_stop __P((struct tl_softc *));
static void tl_watchdog __P((struct ifnet *));
static void tl_shutdown __P((int, void *));
static int tl_ifmedia_upd __P((struct ifnet *));
static void tl_ifmedia_sts __P((struct ifnet *, struct ifmediareq *));
static u_int8_t tl_eeprom_putbyte __P((struct tl_csr *, u_int8_t));
static u_int8_t tl_eeprom_getbyte __P((struct tl_csr *, u_int8_t ,
u_int8_t * ));
static int tl_read_eeprom __P((struct tl_csr *, caddr_t, int, int));
static void tl_mii_sync __P((struct tl_csr *));
static void tl_mii_send __P((struct tl_csr *, u_int32_t, int));
static int tl_mii_readreg __P((struct tl_csr *, struct tl_mii_frame *));
static int tl_mii_writereg __P((struct tl_csr *, struct tl_mii_frame *));
static u_int16_t tl_phy_readreg __P((struct tl_softc *, int));
static void tl_phy_writereg __P((struct tl_softc *, u_int16_t, u_int16_t));
static void tl_autoneg __P((struct tl_softc *, int, int));
static void tl_setmode __P((struct tl_softc *, int));
static int tl_calchash __P((char *));
static void tl_setmulti __P((struct tl_softc *));
static void tl_softreset __P((struct tl_csr *, int));
static int tl_list_rx_init __P((struct tl_softc *));
static int tl_list_tx_init __P((struct tl_softc *));
/*
* ThunderLAN adapters typically have a serial EEPROM containing
* configuration information. The main reason we're interested in
* it is because it also contains the adapters's station address.
*
* Access to the EEPROM is a bit goofy since it is a serial device:
* you have to do reads and writes one bit at a time. The state of
* the DATA bit can only change while the CLOCK line is held low.
* Transactions work basically like this:
*
* 1) Send the EEPROM_START sequence to prepare the EEPROM for
* accepting commands. This pulls the clock high, sets
* the data bit to 0, enables transmission to the EEPROM,
* pulls the data bit up to 1, then pulls the clock low.
* The idea is to do a 0 to 1 transition of the data bit
* while the clock pin is held high.
*
* 2) To write a bit to the EEPROM, set the TXENABLE bit, then
* set the EDATA bit to send a 1 or clear it to send a 0.
* Finally, set and then clear ECLOK. Strobing the clock
* transmits the bit. After 8 bits have been written, the
* EEPROM should respond with an ACK, which should be read.
*
* 3) To read a bit from the EEPROM, clear the TXENABLE bit,
* then set ECLOK. The bit can then be read by reading EDATA.
* ECLOCK should then be cleared again. This can be repeated
* 8 times to read a whole byte, after which the
*
* 4) We need to send the address byte to the EEPROM. For this
* we have to send the write control byte to the EEPROM to
* tell it to accept data. The byte is 0xA0. The EEPROM should
* ack this. The address byte can be send after that.
*
* 5) Now we have to tell the EEPROM to send us data. For that we
* have to transmit the read control byte, which is 0xA1. This
* byte should also be acked. We can then read the data bits
* from the EEPROM.
*
* 6) When we're all finished, send the EEPROM_STOP sequence.
*
* Note that we use the ThunderLAN's NetSio register to access the
* EEPROM, however there is an alternate method. There is a PCI NVRAM
* register at PCI offset 0xB4 which can also be used with minor changes.
* The difference is that access to PCI registers via pci_conf_read()
* and pci_conf_write() is done using programmed I/O, which we want to
* avoid.
*/
/*
* Note that EEPROM_START leaves transmission enabled.
*/
#define EEPROM_START \
DIO_SEL(TL_NETSIO); \
DIO_BYTE1_SET(TL_SIO_ECLOK); /* Pull clock pin high */ \
DIO_BYTE1_SET(TL_SIO_EDATA); /* Set DATA bit to 1 */ \
DIO_BYTE1_SET(TL_SIO_ETXEN); /* Enable xmit to write bit */ \
DIO_BYTE1_CLR(TL_SIO_EDATA); /* Pull DATA bit to 0 again */ \
DIO_BYTE1_CLR(TL_SIO_ECLOK); /* Pull clock low again */
/*
* EEPROM_STOP ends access to the EEPROM and clears the ETXEN bit so
* that no further data can be written to the EEPROM I/O pin.
*/
#define EEPROM_STOP \
DIO_SEL(TL_NETSIO); \
DIO_BYTE1_CLR(TL_SIO_ETXEN); /* Disable xmit */ \
DIO_BYTE1_CLR(TL_SIO_EDATA); /* Pull DATA to 0 */ \
DIO_BYTE1_SET(TL_SIO_ECLOK); /* Pull clock high */ \
DIO_BYTE1_SET(TL_SIO_ETXEN); /* Enable xmit */ \
DIO_BYTE1_SET(TL_SIO_EDATA); /* Toggle DATA to 1 */ \
DIO_BYTE1_CLR(TL_SIO_ETXEN); /* Disable xmit. */ \
DIO_BYTE1_CLR(TL_SIO_ECLOK); /* Pull clock low again */
/*
* Send an instruction or address to the EEPROM, check for ACK.
*/
static u_int8_t tl_eeprom_putbyte(csr, byte)
struct tl_csr *csr;
u_int8_t byte;
{
register int i, ack = 0;
/*
* Make sure we're in TX mode.
*/
DIO_SEL(TL_NETSIO);
DIO_BYTE1_SET(TL_SIO_ETXEN);
/*
* Feed in each bit and stobe the clock.
*/
for (i = 0x80; i; i >>= 1) {
DIO_SEL(TL_NETSIO);
if (byte & i) {
DIO_BYTE1_SET(TL_SIO_EDATA);
} else {
DIO_BYTE1_CLR(TL_SIO_EDATA);
}
DIO_BYTE1_SET(TL_SIO_ECLOK);
DIO_BYTE1_CLR(TL_SIO_ECLOK);
}
/*
* Turn off TX mode.
*/
DIO_BYTE1_CLR(TL_SIO_ETXEN);
/*
* Check for ack.
*/
DIO_BYTE1_SET(TL_SIO_ECLOK);
ack = DIO_BYTE1_GET(TL_SIO_EDATA);
DIO_BYTE1_CLR(TL_SIO_ECLOK);
return(ack);
}
/*
* Read a byte of data stored in the EEPROM at address 'addr.'
*/
static u_int8_t tl_eeprom_getbyte(csr, addr, dest)
struct tl_csr *csr;
u_int8_t addr;
u_int8_t *dest;
{
register int i;
u_int8_t byte = 0;
EEPROM_START;
/*
* Send write control code to EEPROM.
*/
if (tl_eeprom_putbyte(csr, EEPROM_CTL_WRITE))
return(1);
/*
* Send address of byte we want to read.
*/
if (tl_eeprom_putbyte(csr, addr))
return(1);
EEPROM_STOP;
EEPROM_START;
/*
* Send read control code to EEPROM.
*/
if (tl_eeprom_putbyte(csr, EEPROM_CTL_READ))
return(1);
/*
* Start reading bits from EEPROM.
*/
DIO_SEL(TL_NETSIO);
DIO_BYTE1_CLR(TL_SIO_ETXEN);
for (i = 0x80; i; i >>= 1) {
DIO_SEL(TL_NETSIO);
DIO_BYTE1_SET(TL_SIO_ECLOK);
if (DIO_BYTE1_GET(TL_SIO_EDATA))
byte |= i;
DIO_BYTE1_CLR(TL_SIO_ECLOK);
}
EEPROM_STOP;
/*
* No ACK generated for read, so just return byte.
*/
*dest = byte;
return(0);
}
static void tl_mii_sync(csr)
struct tl_csr *csr;
{
register int i;
DIO_SEL(TL_NETSIO);
DIO_BYTE1_CLR(TL_SIO_MTXEN);
for (i = 0; i < 32; i++) {
DIO_BYTE1_SET(TL_SIO_MCLK);
DIO_BYTE1_CLR(TL_SIO_MCLK);
}
return;
}
static void tl_mii_send(csr, bits, cnt)
struct tl_csr *csr;
u_int32_t bits;
int cnt;
{
int i;
for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
DIO_BYTE1_CLR(TL_SIO_MCLK);
if (bits & i) {
DIO_BYTE1_SET(TL_SIO_MDATA);
} else {
DIO_BYTE1_CLR(TL_SIO_MDATA);
}
DIO_BYTE1_SET(TL_SIO_MCLK);
}
}
static int tl_mii_readreg(csr, frame)
struct tl_csr *csr;
struct tl_mii_frame *frame;
{
int i, ack, s;
int minten = 0;
s = splimp();
tl_mii_sync(csr);
/*
* Set up frame for RX.
*/
frame->mii_stdelim = TL_MII_STARTDELIM;
frame->mii_opcode = TL_MII_READOP;
frame->mii_turnaround = 0;
frame->mii_data = 0;
/*
* Select the NETSIO register. We will be using it
* to communicate indirectly with the MII.
*/
DIO_SEL(TL_NETSIO);
/*
* Turn off MII interrupt by forcing MINTEN low.
*/
minten = DIO_BYTE1_GET(TL_SIO_MINTEN);
if (minten) {
DIO_BYTE1_CLR(TL_SIO_MINTEN);
}
/*
* Turn on data xmit.
*/
DIO_BYTE1_SET(TL_SIO_MTXEN);
/*
* Send command/address info.
*/
tl_mii_send(csr, frame->mii_stdelim, 2);
tl_mii_send(csr, frame->mii_opcode, 2);
tl_mii_send(csr, frame->mii_phyaddr, 5);
tl_mii_send(csr, frame->mii_regaddr, 5);
/*
* Turn off xmit.
*/
DIO_BYTE1_CLR(TL_SIO_MTXEN);
/* Idle bit */
DIO_BYTE1_CLR(TL_SIO_MCLK);
DIO_BYTE1_SET(TL_SIO_MCLK);
/* Check for ack */
DIO_BYTE1_CLR(TL_SIO_MCLK);
ack = DIO_BYTE1_GET(TL_SIO_MDATA);
/* Complete the cycle */
DIO_BYTE1_SET(TL_SIO_MCLK);
/*
* Now try reading data bits. If the ack failed, we still
* need to clock through 16 cycles to keep the PHYs in sync.
*/
if (ack) {
for(i = 0; i < 16; i++) {
DIO_BYTE1_CLR(TL_SIO_MCLK);
DIO_BYTE1_SET(TL_SIO_MCLK);
}
goto fail;
}
for (i = 0x8000; i; i >>= 1) {
DIO_BYTE1_CLR(TL_SIO_MCLK);
if (!ack) {
if (DIO_BYTE1_GET(TL_SIO_MDATA))
frame->mii_data |= i;
}
DIO_BYTE1_SET(TL_SIO_MCLK);
}
fail:
DIO_BYTE1_CLR(TL_SIO_MCLK);
DIO_BYTE1_SET(TL_SIO_MCLK);
/* Reenable interrupts */
if (minten) {
DIO_BYTE1_SET(TL_SIO_MINTEN);
}
splx(s);
if (ack)
return(1);
return(0);
}
static int tl_mii_writereg(csr, frame)
struct tl_csr *csr;
struct tl_mii_frame *frame;
{
int s;
int minten;
tl_mii_sync(csr);
s = splimp();
/*
* Set up frame for TX.
*/
frame->mii_stdelim = TL_MII_STARTDELIM;
frame->mii_opcode = TL_MII_WRITEOP;
frame->mii_turnaround = TL_MII_TURNAROUND;
/*
* Select the NETSIO register. We will be using it
* to communicate indirectly with the MII.
*/
DIO_SEL(TL_NETSIO);
/*
* Turn off MII interrupt by forcing MINTEN low.
*/
minten = DIO_BYTE1_GET(TL_SIO_MINTEN);
if (minten) {
DIO_BYTE1_CLR(TL_SIO_MINTEN);
}
/*
* Turn on data output.
*/
DIO_BYTE1_SET(TL_SIO_MTXEN);
tl_mii_send(csr, frame->mii_stdelim, 2);
tl_mii_send(csr, frame->mii_opcode, 2);
tl_mii_send(csr, frame->mii_phyaddr, 5);
tl_mii_send(csr, frame->mii_regaddr, 5);
tl_mii_send(csr, frame->mii_turnaround, 2);
tl_mii_send(csr, frame->mii_data, 16);
DIO_BYTE1_SET(TL_SIO_MCLK);
DIO_BYTE1_CLR(TL_SIO_MCLK);
/*
* Turn off xmit.
*/
DIO_BYTE1_CLR(TL_SIO_MTXEN);
/* Reenable interrupts */
if (minten)
DIO_BYTE1_SET(TL_SIO_MINTEN);
splx(s);
return(0);
}
static u_int16_t tl_phy_readreg(sc, reg)
struct tl_softc *sc;
int reg;
{
struct tl_mii_frame frame;
struct tl_csr *csr;
bzero((char *)&frame, sizeof(frame));
csr = sc->csr;
frame.mii_phyaddr = sc->tl_phy_addr;
frame.mii_regaddr = reg;
tl_mii_readreg(sc->csr, &frame);
/* Reenable MII interrupts, just in case. */
DIO_SEL(TL_NETSIO);
DIO_BYTE1_SET(TL_SIO_MINTEN);
return(frame.mii_data);
}
static void tl_phy_writereg(sc, reg, data)
struct tl_softc *sc;
u_int16_t reg;
u_int16_t data;
{
struct tl_mii_frame frame;
struct tl_csr *csr;
bzero((char *)&frame, sizeof(frame));
csr = sc->csr;
frame.mii_phyaddr = sc->tl_phy_addr;
frame.mii_regaddr = reg;
frame.mii_data = data;
tl_mii_writereg(sc->csr, &frame);
/* Reenable MII interrupts, just in case. */
DIO_SEL(TL_NETSIO);
DIO_BYTE1_SET(TL_SIO_MINTEN);
return;
}
/*
* Read a sequence of bytes from the EEPROM.
*/
static int tl_read_eeprom(csr, dest, off, cnt)
struct tl_csr *csr;
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(csr, off + i, &byte);
if (err)
break;
*(dest + i) = byte;
}
return(err ? 1 : 0);
}
/*
* Initiate autonegotiation with a link partner.
*
* Note that the Texas Instruments ThunderLAN programmer's guide
* fails to mention one very important point about autonegotiation.
* Autonegotiation is done largely by the PHY, independent of the
* ThunderLAN chip itself: the PHY sets the flags in the BMCR
* register to indicate what modes were selected and if link status
* is good. In fact, the PHY does pretty much all of the work itself,
* except for one small detail.
*
* The PHY may negotiate a full-duplex of half-duplex link, and set
* the PHY_BMCR_DUPLEX bit accordingly, but the ThunderLAN's 'NetCommand'
* register _also_ has a half-duplex/full-duplex bit, and you MUST ALSO
* SET THIS BIT MANUALLY TO CORRESPOND TO THE MODE SELECTED FOR THE PHY!
* In other words, both the ThunderLAN chip and the PHY have to be
* programmed for full-duplex mode in order for full-duplex to actually
* work. So in order for autonegotiation to really work right, we have
* to wait for the link to come up, check the BMCR register, then set
* the ThunderLAN for full or half-duplex as needed.
*
* I struggled for two days to figure this out, so I'm making a point
* of drawing attention to this fact. I think it's very strange that
* the ThunderLAN doesn't automagically track the duplex state of the
* PHY, but there you have it.
*
* Also when, using a National Semiconductor DP83840A PHY, we have to
* allow a full three seconds for autonegotiation to complete. So what
* we do is flip the autonegotiation restart bit, then set a timeout
* to wake us up in three seconds to check the link state.
*/
static void tl_autoneg(sc, flag, verbose)
struct tl_softc *sc;
int flag;
int verbose;
{
u_int16_t phy_sts = 0, media = 0;
struct ifnet *ifp;
struct ifmedia *ifm;
struct tl_csr *csr;
ifm = &sc->ifmedia;
ifp = &sc->arpcom.ac_if;
csr = sc->csr;
/*
* First, see if autoneg is supported. If not, there's
* no point in continuing.
*/
phy_sts = tl_phy_readreg(sc, PHY_BMSR);
if (!(phy_sts & PHY_BMSR_CANAUTONEG)) {
if (verbose)
printf("tl%d: autonegotiation not supported\n",
sc->tl_unit);
return;
}
switch (flag) {
case TL_FLAG_FORCEDELAY:
/*
* XXX Never use this option anywhere but in the probe
* routine: making the kernel stop dead in its tracks
* for three whole seconds after we've gone multi-user
* is really bad manners.
*/
phy_sts = tl_phy_readreg(sc, PHY_BMCR);
phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
tl_phy_writereg(sc, PHY_BMCR, phy_sts);
DELAY(3000000);
break;
case TL_FLAG_SCHEDDELAY:
phy_sts = tl_phy_readreg(sc, PHY_BMCR);
phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
tl_phy_writereg(sc, PHY_BMCR, phy_sts);
ifp->if_timer = 3;
sc->tl_autoneg = 1;
return;
case TL_FLAG_DELAYTIMEO:
ifp->if_timer = 0;
sc->tl_autoneg = 0;
break;
default:
printf("tl%d: invalid autoneg flag: %d\n", flag, sc->tl_unit);
return;
}
/*
* Read the BMSR register twice: the LINKSTAT bit is a
* latching bit.
*/
tl_phy_readreg(sc, PHY_BMSR);
phy_sts = tl_phy_readreg(sc, PHY_BMSR);
if (phy_sts & PHY_BMSR_AUTONEGCOMP) {
if (verbose)
printf("tl%d: autoneg complete, ", sc->tl_unit);
phy_sts = tl_phy_readreg(sc, PHY_BMSR);
} else {
if (verbose)
printf("tl%d: autoneg not complete, ", sc->tl_unit);
}
/* Link is good. Report modes and set duplex mode. */
if (phy_sts & PHY_BMSR_LINKSTAT) {
if (verbose)
printf("link status good ");
media = tl_phy_readreg(sc, PHY_BMCR);
/* Set the DUPLEX bit in the NetCmd register accordingly. */
if (media & PHY_BMCR_DUPLEX) {
if (verbose)
printf("(full-duplex, ");
ifm->ifm_media |= IFM_FDX;
ifm->ifm_media &= ~IFM_HDX;
DIO_SEL(TL_NETCMD);
DIO_BYTE0_SET(TL_CMD_DUPLEX);
} else {
if (verbose)
printf("(half-duplex, ");
ifm->ifm_media &= ~IFM_FDX;
ifm->ifm_media |= IFM_HDX;
DIO_SEL(TL_NETCMD);
DIO_BYTE0_CLR(TL_CMD_DUPLEX);
}
if (media & PHY_BMCR_SPEEDSEL) {
if (verbose)
printf("100Mb/s)\n");
ifm->ifm_media |= IFM_100_TX;
ifm->ifm_media &= ~IFM_10_T;
} else {
if (verbose)
printf("10Mb/s)\n");
ifm->ifm_media &= ~IFM_100_TX;
ifm->ifm_media |= IFM_10_T;
}
/* Turn off autoneg */
media &= ~PHY_BMCR_AUTONEGENBL;
tl_phy_writereg(sc, PHY_BMCR, media);
} else {
if (verbose)
printf("no carrier\n");
}
return;
}
/*
* Set speed and duplex mode. Also program autoneg advertisements
* accordingly.
*/
static void tl_setmode(sc, media)
struct tl_softc *sc;
int media;
{
u_int16_t bmcr, anar, ctl;
struct tl_csr *csr;
csr = sc->csr;
bmcr = tl_phy_readreg(sc, PHY_BMCR);
anar = tl_phy_readreg(sc, PHY_ANAR);
ctl = tl_phy_readreg(sc, TL_PHY_CTL);
DIO_SEL(TL_NETCMD);
bmcr &= ~(PHY_BMCR_SPEEDSEL|PHY_BMCR_DUPLEX|PHY_BMCR_AUTONEGENBL|
PHY_BMCR_LOOPBK);
anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_100BTXHALF|
PHY_ANAR_10BTFULL|PHY_ANAR_10BTHALF);
ctl &= ~PHY_CTL_AUISEL;
if (IFM_SUBTYPE(media) == IFM_LOOP)
bmcr |= PHY_BMCR_LOOPBK;
if (IFM_SUBTYPE(media) == IFM_AUTO)
bmcr |= PHY_BMCR_AUTONEGENBL;
if (IFM_SUBTYPE(media) == IFM_10_5)
ctl |= PHY_CTL_AUISEL;
if (IFM_SUBTYPE(media) == IFM_100_TX) {
bmcr |= PHY_BMCR_SPEEDSEL;
if ((media & IFM_GMASK) == IFM_FDX) {
bmcr |= PHY_BMCR_DUPLEX;
anar |= PHY_ANAR_100BTXFULL;
DIO_BYTE0_SET(TL_CMD_DUPLEX);
} else if ((media & IFM_GMASK) == IFM_HDX) {
bmcr &= ~PHY_BMCR_DUPLEX;
anar |= PHY_ANAR_100BTXHALF;
DIO_BYTE0_CLR(TL_CMD_DUPLEX);
} else {
bmcr &= ~PHY_BMCR_DUPLEX;
anar |= PHY_ANAR_100BTXHALF;
DIO_BYTE0_CLR(TL_CMD_DUPLEX);
}
}
if (IFM_SUBTYPE(media) == IFM_10_T) {
bmcr &= ~PHY_BMCR_SPEEDSEL;
if ((media & IFM_GMASK) == IFM_FDX) {
bmcr |= PHY_BMCR_DUPLEX;
anar |= PHY_ANAR_10BTFULL;
DIO_BYTE0_SET(TL_CMD_DUPLEX);
} else if ((media & IFM_GMASK) == IFM_HDX) {
bmcr &= ~PHY_BMCR_DUPLEX;
anar |= PHY_ANAR_10BTHALF;
DIO_BYTE0_CLR(TL_CMD_DUPLEX);
} else {
bmcr &= ~PHY_BMCR_DUPLEX;
anar |= PHY_ANAR_10BTHALF;
DIO_BYTE0_CLR(TL_CMD_DUPLEX);
}
}
tl_phy_writereg(sc, PHY_BMCR, bmcr);
tl_phy_writereg(sc, PHY_ANAR, anar);
tl_phy_writereg(sc, TL_PHY_CTL, ctl);
return;
}
#define XOR(a, b) ((a && !b) || (!a && b))
#define DA(addr, offset) (addr[offset / 8] & (1 << (offset % 8)))
static int tl_calchash(addr)
char *addr;
{
int h;
h = XOR(DA(addr, 0), XOR(DA(addr, 6), XOR(DA(addr, 12),
XOR(DA(addr, 18), XOR(DA(addr, 24), XOR(DA(addr, 30),
XOR(DA(addr, 36), DA(addr, 42))))))));
h |= XOR(DA(addr, 1), XOR(DA(addr, 7), XOR(DA(addr, 13),
XOR(DA(addr, 19), XOR(DA(addr, 25), XOR(DA(addr, 31),
XOR(DA(addr, 37), DA(addr, 43)))))))) << 1;
h |= XOR(DA(addr, 2), XOR(DA(addr, 8), XOR(DA(addr, 14),
XOR(DA(addr, 20), XOR(DA(addr, 26), XOR(DA(addr, 32),
XOR(DA(addr, 38), DA(addr, 44)))))))) << 2;
h |= XOR(DA(addr, 3), XOR(DA(addr, 9), XOR(DA(addr, 15),
XOR(DA(addr, 21), XOR(DA(addr, 27), XOR(DA(addr, 33),
XOR(DA(addr, 39), DA(addr, 45)))))))) << 3;
h |= XOR(DA(addr, 4), XOR(DA(addr, 10), XOR(DA(addr, 16),
XOR(DA(addr, 22), XOR(DA(addr, 28), XOR(DA(addr, 34),
XOR(DA(addr, 40), DA(addr, 46)))))))) << 4;
h |= XOR(DA(addr, 5), XOR(DA(addr, 11), XOR(DA(addr, 17),
XOR(DA(addr, 23), XOR(DA(addr, 29), XOR(DA(addr, 35),
XOR(DA(addr, 41), DA(addr, 47)))))))) << 5;
return(h);
}
static void tl_setmulti(sc)
struct tl_softc *sc;
{
struct ifnet *ifp;
struct tl_csr *csr;
u_int32_t hashes[2] = { 0, 0 };
int h;
struct ifmultiaddr *ifma;
csr = sc->csr;
ifp = &sc->arpcom.ac_if;
if (sc->arpcom.ac_multicnt > 64 || ifp->if_flags & IFF_ALLMULTI) {
hashes[0] = 0xFFFFFFFF;
hashes[1] = 0xFFFFFFFF;
} else {
for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
ifma = ifma->ifma_link.le_next) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
h = tl_calchash(
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
if (h < 32)
hashes[0] |= (1 << h);
else
hashes[1] |= (1 << (h - 32));
}
}
DIO_SEL(TL_HASH1);
DIO_LONG_PUT(hashes[0]);
DIO_SEL(TL_HASH2);
DIO_LONG_PUT(hashes[1]);
return;
}
static void tl_softreset(csr, internal)
struct tl_csr *csr;
int internal;
{
u_int32_t cmd, dummy;
/* Assert the adapter reset bit. */
csr->tl_host_cmd |= TL_CMD_ADRST;
/* Turn off interrupts */
csr->tl_host_cmd |= TL_CMD_INTSOFF;
/* First, clear the stats registers. */
DIO_SEL(TL_TXGOODFRAMES|TL_DIO_ADDR_INC);
DIO_LONG_GET(dummy);
DIO_LONG_GET(dummy);
DIO_LONG_GET(dummy);
DIO_LONG_GET(dummy);
DIO_LONG_GET(dummy);
/* Clear Areg and Hash registers */
DIO_SEL(TL_AREG0_B5|TL_DIO_ADDR_INC);
DIO_LONG_PUT(0x00000000);
DIO_LONG_PUT(0x00000000);
DIO_LONG_PUT(0x00000000);
DIO_LONG_PUT(0x00000000);
DIO_LONG_PUT(0x00000000);
DIO_LONG_PUT(0x00000000);
DIO_LONG_PUT(0x00000000);
DIO_LONG_PUT(0x00000000);
/*
* Set up Netconfig register. Enable one channel and
* one fragment mode.
*/
DIO_SEL(TL_NETCONFIG);
DIO_WORD0_SET(TL_CFG_ONECHAN|TL_CFG_ONEFRAG);
if (internal) {
DIO_SEL(TL_NETCONFIG);
DIO_WORD0_SET(TL_CFG_PHYEN);
} else {
DIO_SEL(TL_NETCONFIG);
DIO_WORD0_CLR(TL_CFG_PHYEN);
}
/* Set PCI burst size */
DIO_SEL(TL_BSIZEREG);
DIO_BYTE1_SET(0x33);
/*
* Load adapter irq pacing timer and tx threshold.
* We make the transmit threshold 1 initially but we may
* change that later.
*/
cmd = csr->tl_host_cmd;
cmd |= TL_CMD_NES;
cmd &= ~(TL_CMD_RT|TL_CMD_EOC|TL_CMD_ACK_MASK|TL_CMD_CHSEL_MASK);
csr->tl_host_cmd = cmd | (TL_CMD_LDTHR | TX_THR);
csr->tl_host_cmd = cmd | (TL_CMD_LDTMR | 0x00000003);
/* Unreset the MII */
DIO_SEL(TL_NETSIO);
DIO_BYTE1_SET(TL_SIO_NMRST);
/* Clear status register */
DIO_SEL(TL_NETSTS);
DIO_BYTE2_SET(TL_STS_MIRQ);
DIO_BYTE2_SET(TL_STS_HBEAT);
DIO_BYTE2_SET(TL_STS_TXSTOP);
DIO_BYTE2_SET(TL_STS_RXSTOP);
/* Enable network status interrupts for everything. */
DIO_SEL(TL_NETMASK);
DIO_BYTE3_SET(TL_MASK_MASK7|TL_MASK_MASK6|
TL_MASK_MASK5|TL_MASK_MASK4);
/* Take the adapter out of reset */
DIO_SEL(TL_NETCMD);
DIO_BYTE0_SET(TL_CMD_NRESET|TL_CMD_NWRAP);
/* Wait for things to settle down a little. */
DELAY(500);
return;
}
/*
* Probe for a ThunderLAN chip. Check the PCI vendor and device IDs
* against our list and return its name if we find a match. Note that
* we also save a pointer to the tl_type struct for this card since we
* will need it for the softc struct and attach routine later.
*/
static char *
tl_probe(config_id, device_id)
pcici_t config_id;
pcidi_t device_id;
{
struct tl_type *t;
struct tl_iflist *new;
t = tl_devs;
while(t->tl_name != NULL) {
if ((device_id & 0xFFFF) == t->tl_vid &&
((device_id >> 16) & 0xFFFF) == t->tl_did) {
new = malloc(sizeof(struct tl_iflist),
M_DEVBUF, M_NOWAIT);
if (new == NULL) {
printf("no memory for controller struct!\n");
break;
}
bzero(new, sizeof(struct tl_iflist));
new->tl_config_id = config_id;
new->tl_dinfo = t;
new->tl_next = tl_iflist;
tl_iflist = new;
return(t->tl_name);
}
t++;
}
return(NULL);
}
/*
* The ThunderLAN controller can support multiple PHYs. Logically,
* this means we have to be able to deal with each PHY as a separate
* interface. We therefore consider ThunderLAN devices as follows:
*
* o Each ThunderLAN controller device is assigned the name tlcX where
* X is the controller's unit number. Each ThunderLAN device found
* is assigned a different number.
*
* o Each PHY on each controller is assigned the name tlX. X starts at
* 0 and is incremented each time an additional PHY is found.
*
* So, if you had two dual-channel ThunderLAN cards, you'd have
* tlc0 and tlc1 (the controllers) and tl0, tl1, tl2, tl3 (the logical
* interfaces). I think. I'm still not sure how dual chanel controllers
* work as I've yet to see one.
*/
/*
* Do the interface setup and attach for a PHY on a particular
* ThunderLAN chip. Also also set up interrupt vectors.
*/
static int tl_attach_phy(csr, tl_unit, eaddr, tl_phy, ilist)
struct tl_csr *csr;
int tl_unit;
char *eaddr;
int tl_phy;
struct tl_iflist *ilist;
{
struct tl_softc *sc;
struct ifnet *ifp;
int phy_ctl;
struct tl_type *p = tl_phys;
struct tl_mii_frame frame;
int i, media = IFM_ETHER|IFM_100_TX|IFM_FDX;
unsigned int round;
caddr_t roundptr;
if (tl_phy != TL_PHYADDR_MAX)
tl_softreset(csr, 0);
/* Reset the PHY again, just in case. */
bzero((char *)&frame, sizeof(frame));
frame.mii_phyaddr = tl_phy;
frame.mii_regaddr = TL_PHY_GENCTL;
frame.mii_data = PHY_BMCR_RESET;
tl_mii_writereg(csr, &frame);
DELAY(500);
frame.mii_data = 0;
/* First, allocate memory for the softc struct. */
sc = malloc(sizeof(struct tl_softc), M_DEVBUF, M_NOWAIT);
if (sc == NULL) {
printf("tlc%d: no memory for softc struct!\n", ilist->tlc_unit);
return(1);
}
bzero(sc, sizeof(struct tl_softc));
/*
* Now allocate memory for the TX and RX lists. Note that
* we actually allocate 8 bytes more than we really need:
* this is because we need to adjust the final address to
* be aligned on a quadword (64-bit) boundary in order to
* make the chip happy. If the list structures aren't properly
* aligned, DMA fails and the chip generates an adapter check
* interrupt and has to be reset. If you set up the softc struct
* just right you can sort of obtain proper alignment 'by chance.'
* But I don't want to depend on this, so instead the alignment
* is forced here.
*/
sc->tl_ldata_ptr = malloc(sizeof(struct tl_list_data) + 8,
M_DEVBUF, M_NOWAIT);
if (sc->tl_ldata_ptr == NULL) {
free(sc, M_DEVBUF);
printf("tlc%d: no memory for list buffers!\n", ilist->tlc_unit);
return(1);
}
/*
* Convoluted but satisfies my ANSI sensibilities. GCC lets
* you do casts on the LHS of an assignment, but ANSI doesn't
* allow that.
*/
sc->tl_ldata = (struct tl_list_data *)sc->tl_ldata_ptr;
round = (unsigned int)sc->tl_ldata_ptr & 0xF;
roundptr = sc->tl_ldata_ptr;
for (i = 0; i < 8; i++) {
if (round % 8) {
round++;
roundptr++;
} else
break;
}
sc->tl_ldata = (struct tl_list_data *)roundptr;
bzero(sc->tl_ldata, sizeof(struct tl_list_data));
sc->csr = csr;
sc->tl_dinfo = ilist->tl_dinfo;
sc->tl_ctlr = ilist->tlc_unit;
sc->tl_unit = tl_unit;
sc->tl_phy_addr = tl_phy;
sc->tl_iflist = ilist;
callout_handle_init(&sc->tl_stat_ch);
frame.mii_regaddr = TL_PHY_VENID;
tl_mii_readreg(csr, &frame);
sc->tl_phy_vid = frame.mii_data;
frame.mii_regaddr = TL_PHY_DEVID;
tl_mii_readreg(csr, &frame);
sc->tl_phy_did = frame.mii_data;
frame.mii_regaddr = TL_PHY_GENSTS;
tl_mii_readreg(csr, &frame);
sc->tl_phy_sts = frame.mii_data;
frame.mii_regaddr = TL_PHY_GENCTL;
tl_mii_readreg(csr, &frame);
phy_ctl = frame.mii_data;
/*
* PHY revision numbers tend to vary a bit. Our algorithm here
* is to check everything but the 8 least significant bits.
*/
while(p->tl_vid) {
if (sc->tl_phy_vid == p->tl_vid &&
(sc->tl_phy_did | 0x000F) == p->tl_did) {
sc->tl_pinfo = p;
break;
}
p++;
}
if (sc->tl_pinfo == NULL) {
sc->tl_pinfo = &tl_phys[PHY_UNKNOWN];
}
bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
ifp = &sc->arpcom.ac_if;
ifp->if_softc = sc;
ifp->if_unit = tl_unit;
ifp->if_name = "tl";
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = tl_ioctl;
ifp->if_output = ether_output;
ifp->if_start = tl_start;
ifp->if_watchdog = tl_watchdog;
ifp->if_init = tl_init;
if (sc->tl_phy_sts & PHY_BMSR_100BT4 ||
sc->tl_phy_sts & PHY_BMSR_100BTXFULL ||
sc->tl_phy_sts & PHY_BMSR_100BTXHALF)
ifp->if_baudrate = 100000000;
else
ifp->if_baudrate = 10000000;
ilist->tl_sc[tl_phy] = sc;
printf("tl%d at tlc%d physical interface %d\n", ifp->if_unit,
sc->tl_ctlr,
sc->tl_phy_addr);
printf("tl%d: %s ", ifp->if_unit, sc->tl_pinfo->tl_name);
if (sc->tl_phy_sts & PHY_BMSR_100BT4 ||
sc->tl_phy_sts & PHY_BMSR_100BTXHALF ||
sc->tl_phy_sts & PHY_BMSR_100BTXHALF)
printf("10/100Mbps ");
else {
media &= ~IFM_100_TX;
media |= IFM_10_T;
printf("10Mbps ");
}
if (sc->tl_phy_sts & PHY_BMSR_100BTXFULL ||
sc->tl_phy_sts & PHY_BMSR_10BTFULL)
printf("full duplex ");
else {
printf("half duplex ");
media &= ~IFM_FDX;
}
if (sc->tl_phy_sts & PHY_BMSR_CANAUTONEG) {
media = IFM_ETHER|IFM_AUTO;
printf("autonegotiating\n");
} else
printf("\n");
/* If this isn't a known PHY, print the PHY indentifier info. */
if (sc->tl_pinfo->tl_vid == 0)
printf("tl%d: vendor id: %04x product id: %04x\n",
sc->tl_unit, sc->tl_phy_vid, sc->tl_phy_did);
/* Set up ifmedia data and callbacks. */
ifmedia_init(&sc->ifmedia, 0, tl_ifmedia_upd, tl_ifmedia_sts);
/*
* All ThunderLANs support at least 10baseT half duplex.
* They also support AUI selection if used in 10Mb/s modes.
* They all also support a loopback mode.
*/
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_LOOP, 0, NULL);
/* Some ThunderLAN PHYs support autonegotiation. */
if (sc->tl_phy_sts & PHY_BMSR_CANAUTONEG)
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
/* Some support 10baseT full duplex. */
if (sc->tl_phy_sts & PHY_BMSR_10BTFULL)
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
/* Some support 100BaseTX half duplex. */
if (sc->tl_phy_sts & PHY_BMSR_100BTXHALF)
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX, 0, NULL);
if (sc->tl_phy_sts & PHY_BMSR_100BTXHALF)
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_100_TX|IFM_HDX, 0, NULL);
/* Some support 100BaseTX full duplex. */
if (sc->tl_phy_sts & PHY_BMSR_100BTXFULL)
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL);
/* Some also support 100BaseT4. */
if (sc->tl_phy_sts & PHY_BMSR_100BT4)
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_T4, 0, NULL);
/* Set default media. */
ifmedia_set(&sc->ifmedia, media);
/*
* Kick off an autonegotiation session if this PHY supports it.
* This is necessary to make sure the chip's duplex mode matches
* the PHY's duplex mode. It may not: once enabled, the PHY may
* autonegotiate full-duplex mode with its link partner, but the
* ThunderLAN chip defaults to half-duplex and stays there unless
* told otherwise.
*/
if (sc->tl_phy_sts & PHY_BMSR_CANAUTONEG)
tl_autoneg(sc, TL_FLAG_FORCEDELAY, 0);
/*
* Call MI attach routines.
*/
if_attach(ifp);
ether_ifattach(ifp);
#if NBPFILTER > 0
bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
#endif
return(0);
}
static void
tl_attach_ctlr(config_id, unit)
pcici_t config_id;
int unit;
{
int s, i, phys = 0;
vm_offset_t pbase, vbase;
struct tl_csr *csr;
char eaddr[ETHER_ADDR_LEN];
struct tl_mii_frame frame;
u_int32_t command;
struct tl_iflist *ilist;
s = splimp();
for (ilist = tl_iflist; ilist != NULL; ilist = ilist->tl_next)
if (ilist->tl_config_id == config_id)
break;
if (ilist == NULL) {
printf("couldn't match config id with controller struct\n");
goto fail;
}
/*
* Map control/status registers.
*/
pci_conf_write(config_id, PCI_COMMAND_STATUS_REG,
PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG);
if (!(command & PCIM_CMD_MEMEN)) {
printf("tlc%d: failed to enable memory mapping!\n", unit);
goto fail;
}
if (!pci_map_mem(config_id, TL_PCI_LOMEM, &vbase, &pbase)) {
printf ("tlc%d: couldn't map memory\n", unit);
goto fail;
}
csr = (struct tl_csr *)vbase;
ilist->csr = csr;
ilist->tl_active_phy = TL_PHYS_IDLE;
ilist->tlc_unit = unit;
/* Allocate interrupt */
if (!pci_map_int(config_id, tl_intr, ilist, &net_imask)) {
printf("tlc%d: couldn't map interrupt\n", unit);
goto fail;
}
/* Reset the adapter. */
tl_softreset(csr, 1);
/*
* Get station address from the EEPROM.
*/
if (tl_read_eeprom(csr, (caddr_t)&eaddr,
TL_EEPROM_EADDR, ETHER_ADDR_LEN)) {
printf("tlc%d: failed to read station address\n", unit);
goto fail;
}
/*
* A ThunderLAN chip was detected. Inform the world.
*/
printf("tlc%d: Ethernet address: %6D\n", unit, eaddr, ":");
/*
* Now attach the ThunderLAN's PHYs. There will always
* be at least one PHY; if the PHY address is 0x1F, then
* it's the internal one. If we encounter a lower numbered
* PHY, we ignore the internal once since enabling the
* internal PHY disables the external one.
*/
bzero((char *)&frame, sizeof(frame));
for (i = TL_PHYADDR_MIN; i < TL_PHYADDR_MAX + 1; i++) {
frame.mii_phyaddr = i;
frame.mii_regaddr = TL_PHY_GENCTL;
frame.mii_data = PHY_BMCR_RESET;
tl_mii_writereg(csr, &frame);
DELAY(500);
while(frame.mii_data & PHY_BMCR_RESET)
tl_mii_readreg(csr, &frame);
frame.mii_regaddr = TL_PHY_VENID;
frame.mii_data = 0;
tl_mii_readreg(csr, &frame);
if (!frame.mii_data)
continue;
if (tl_attach_phy(csr, phys, eaddr, i, ilist)) {
printf("tlc%d: failed to attach interface %d\n",
unit, i);
goto fail;
}
phys++;
if (phys && i != TL_PHYADDR_MAX)
break;
}
if (!phys) {
printf("tlc%d: no physical interfaces attached!\n", unit);
goto fail;
}
at_shutdown(tl_shutdown, ilist, SHUTDOWN_POST_SYNC);
fail:
splx(s);
return;
}
/*
* 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_TX_LIST_CNT; i++) {
cd->tl_rx_chain[i].tl_ptr =
(struct tl_list *)&ld->tl_rx_list[i];
tl_newbuf(sc, &cd->tl_rx_chain[i]);
if (i == (TL_TX_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 *c;
{
struct mbuf *m_new = NULL;
MGETHDR(m_new, M_DONTWAIT, MT_DATA);
if (m_new == NULL) {
printf("tl%d: no memory for rx list",
sc->tl_unit);
return(ENOBUFS);
}
MCLGET(m_new, M_DONTWAIT);
if (!(m_new->m_flags & M_EXT)) {
printf("tl%d: no memory for rx list", sc->tl_unit);
m_freem(m_new);
return(ENOBUFS);
}
c->tl_mbuf = m_new;
c->tl_next = NULL;
c->tl_ptr->tlist_frsize = MCLBYTES;
c->tl_ptr->tlist_cstat = TL_CSTAT_READY;
c->tl_ptr->tlist_fptr = 0;
c->tl_ptr->tl_frag[0].tlist_dadr = vtophys(mtod(m_new, caddr_t));
c->tl_ptr->tl_frag[0].tlist_dcnt = MCLBYTES;
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 *cur_rx;
sc = xsc;
ifp = &sc->arpcom.ac_if;
while(sc->tl_cdata.tl_rx_head->tl_ptr->tlist_cstat & TL_CSTAT_FRAMECMP){
r++;
cur_rx = sc->tl_cdata.tl_rx_head;
sc->tl_cdata.tl_rx_head = cur_rx->tl_next;
m = cur_rx->tl_mbuf;
total_len = cur_rx->tl_ptr->tlist_frsize;
tl_newbuf(sc, cur_rx);
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;
eh = mtod(m, struct ether_header *);
m->m_pkthdr.rcvif = ifp;
#if NBPFILTER > 0
/*
* Handle BPF listeners. Let the BPF user see the packet, but
* don't pass it up to the ether_input() layer unless it's
* a broadcast packet, multicast packet, matches our ethernet
* address or the interface is in promiscuous mode. If we don't
* want the packet, just forget it. We leave the mbuf in place
* since it can be used again later.
*/
if (ifp->if_bpf) {
m->m_pkthdr.len = m->m_len = total_len;
bpf_mtap(ifp, m);
if (ifp->if_flags & IFF_PROMISC &&
(bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr,
ETHER_ADDR_LEN) &&
(eh->ether_dhost[0] & 1) == 0)) {
m_freem(m);
continue;
}
}
#endif
/* Remove header from mbuf and pass it on. */
m->m_pkthdr.len = m->m_len =
total_len - sizeof(struct ether_header);
m->m_data += sizeof(struct ether_header);
ether_input(ifp, eh, m);
}
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;
sc = xsc;
/* Flush out the receive queue and ack RXEOF interrupts. */
r = tl_intvec_rxeof(xsc, type);
sc->csr->tl_host_cmd = TL_CMD_ACK | r | (type & ~(0x00100000));
r = 1;
sc->csr->tl_ch_parm = vtophys(sc->tl_cdata.tl_rx_head->tl_ptr);
r |= (TL_CMD_GO|TL_CMD_RT);
return(r);
}
/*
* Invalid interrupt handler. The manual says invalid interrupts
* are caused by a hardware error in other hardware and that they
* should just be ignored.
*/
static int tl_intvec_invalid(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
sc = xsc;
#ifdef DIAGNOSTIC
printf("tl%d: got an invalid interrupt!\n", sc->tl_unit);
#endif
/* Re-enable interrupts but don't ack this one. */
sc->csr->tl_host_cmd |= type;
return(0);
}
/*
* Dummy interrupt handler. Dummy interrupts are generated by setting
* the ReqInt bit in the host command register. They should only occur
* if we ask for them, and we never do, so if one magically appears,
* we should make some noise about it.
*/
static int tl_intvec_dummy(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
sc = xsc;
printf("tl%d: got a dummy interrupt\n", sc->tl_unit);
return(1);
}
/*
* Stats counter overflow interrupt. The chip delivers one of these
* if we don't poll the stats counters often enough.
*/
static int tl_intvec_statoflow(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
sc = xsc;
tl_stats_update(sc);
return(1);
}
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;
}
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->arpcom.ac_if;
/* Clear the timeout timer. */
ifp->if_timer = 0;
if (sc->tl_cdata.tl_tx_head == NULL) {
ifp->if_flags &= ~IFF_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. */
sc->csr->tl_host_cmd = TL_CMD_ACK | 0x00000001 | type;
/* Then load the address of the next TX list. */
sc->csr->tl_ch_parm = vtophys(sc->tl_cdata.tl_tx_head->tl_ptr);
/* Restart TX channel. */
cmd = sc->csr->tl_host_cmd;
cmd &= ~TL_CMD_RT;
cmd |= TL_CMD_GO|TL_CMD_INTSON;
sc->csr->tl_host_cmd = cmd;
return(0);
}
return(1);
}
static int tl_intvec_adchk(xsc, type)
void *xsc;
u_int32_t type;
{
struct tl_softc *sc;
sc = xsc;
printf("tl%d: adapter check: %x\n", sc->tl_unit, sc->csr->tl_ch_parm);
tl_softreset(sc->csr, sc->tl_phy_addr == TL_PHYADDR_MAX ? 1 : 0);
tl_init(sc);
sc->csr->tl_host_cmd |= 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;
struct tl_csr *csr;
sc = xsc;
csr = sc->csr;
DIO_SEL(TL_NETSTS);
netsts = DIO_BYTE2_GET(0xFF);
DIO_BYTE2_SET(netsts);
printf("tl%d: network status: %x\n", sc->tl_unit, netsts);
return(1);
}
static void tl_intr(xilist)
void *xilist;
{
struct tl_iflist *ilist;
struct tl_softc *sc;
struct tl_csr *csr;
struct ifnet *ifp;
int r = 0;
u_int32_t type = 0;
u_int16_t ints = 0;
u_int8_t ivec = 0;
ilist = xilist;
csr = ilist->csr;
/* Disable interrupts */
ints = csr->tl_host_int;
csr->tl_host_int = ints;
type = (ints << 16) & 0xFFFF0000;
ivec = (ints & TL_VEC_MASK) >> 5;
ints = (ints & TL_INT_MASK) >> 2;
/*
* An interrupt has been posted by the ThunderLAN, but we
* have to figure out which PHY generated it before we can
* do anything with it. If we receive an interrupt when we
* know none of the PHYs are turned on, then either there's
* a bug in the driver or we we handed an interrupt that
* doesn't actually belong to us.
*/
if (ilist->tl_active_phy == TL_PHYS_IDLE) {
/*
* Exception: if this is an invalid interrupt,
* just re-enable interrupts and ignore it. Probably
* what's happened is that we got an interrupt meant
* for another PCI device that's sharing our IRQ.
*/
if (ints == TL_INTR_INVALID) {
csr->tl_host_cmd |= type;
return;
}
printf("tlc%d: interrupt type %x with all phys idle\n",
ilist->tlc_unit, ints);
return;
}
sc = ilist->tl_sc[ilist->tl_active_phy];
csr = sc->csr;
ifp = &sc->arpcom.ac_if;
switch(ints) {
case (TL_INTR_INVALID):
r = tl_intvec_invalid((void *)sc, type);
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):
r = tl_intvec_statoflow((void *)sc, type);
break;
case (TL_INTR_RXEOF):
r = tl_intvec_rxeof((void *)sc, type);
break;
case (TL_INTR_DUMMY):
r = tl_intvec_dummy((void *)sc, type);
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:
printf("tl%d: bogus interrupt type\n", ifp->if_unit);
break;
}
/* Re-enable interrupts */
if (r)
csr->tl_host_cmd = TL_CMD_ACK | r | type;
return;
}
static void tl_stats_update(xsc)
void *xsc;
{
struct tl_softc *sc;
struct ifnet *ifp;
struct tl_csr *csr;
struct tl_stats tl_stats;
u_int32_t *p;
bzero((char *)&tl_stats, sizeof(struct tl_stats));
sc = xsc;
csr = sc->csr;
ifp = &sc->arpcom.ac_if;
p = (u_int32_t *)&tl_stats;
DIO_SEL(TL_TXGOODFRAMES|TL_DIO_ADDR_INC);
DIO_LONG_GET(*p++);
DIO_LONG_GET(*p++);
DIO_LONG_GET(*p++);
DIO_LONG_GET(*p++);
DIO_LONG_GET(*p++);
ifp->if_opackets += tl_tx_goodframes(tl_stats);
ifp->if_collisions += tl_stats.tl_tx_single_collision +
tl_stats.tl_tx_multi_collision;
ifp->if_ipackets += tl_rx_goodframes(tl_stats);
ifp->if_ierrors += tl_stats.tl_crc_errors + tl_stats.tl_code_errors +
tl_rx_overrun(tl_stats);
ifp->if_oerrors += tl_tx_underrun(tl_stats);
sc->tl_stat_ch = timeout(tl_stats_update, sc, hz);
return;
}
/*
* 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;
/*
* 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_DONTWAIT, MT_DATA);
if (m_new == NULL) {
printf("tl%d: no memory for tx list", sc->tl_unit);
return(1);
}
if (m_head->m_pkthdr.len > MHLEN) {
MCLGET(m_new, M_DONTWAIT);
if (!(m_new->m_flags & M_EXT)) {
m_freem(m_new);
printf("tl%d: no memory for tx list",
sc->tl_unit);
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)
printf("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;
struct tl_csr *csr;
struct mbuf *m_head = NULL;
u_int32_t cmd;
struct tl_chain *prev = NULL, *cur_tx = NULL, *start_tx;
sc = ifp->if_softc;
csr = sc->csr;
/*
* Check for an available queue slot. If there are none,
* punt.
*/
if (sc->tl_cdata.tl_tx_free == NULL) {
ifp->if_flags |= IFF_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.
*/
#if NBPFILTER > 0
if (ifp->if_bpf)
bpf_mtap(ifp, cur_tx->tl_mbuf);
#endif
}
/*
* 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;
sc->csr->tl_ch_parm = vtophys(start_tx->tl_ptr);
cmd = sc->csr->tl_host_cmd;
cmd &= ~TL_CMD_RT;
cmd |= TL_CMD_GO|TL_CMD_INTSON;
sc->csr->tl_host_cmd = cmd;
}
} else {
sc->tl_cdata.tl_tx_tail->tl_next = start_tx;
sc->tl_cdata.tl_tx_tail->tl_ptr->tlist_fptr =
vtophys(start_tx->tl_ptr);
sc->tl_cdata.tl_tx_tail = start_tx;
}
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
return;
}
static void tl_init(xsc)
void *xsc;
{
struct tl_softc *sc = xsc;
struct ifnet *ifp = &sc->arpcom.ac_if;
struct tl_csr *csr = sc->csr;
int s;
u_int16_t phy_sts;
s = splimp();
ifp = &sc->arpcom.ac_if;
/*
* Cancel pending I/O.
*/
tl_stop(sc);
/*
* Set 'capture all frames' bit for promiscuous mode.
*/
if (ifp->if_flags & IFF_PROMISC) {
DIO_SEL(TL_NETCMD);
DIO_BYTE0_SET(TL_CMD_CAF);
} else {
DIO_SEL(TL_NETCMD);
DIO_BYTE0_CLR(TL_CMD_CAF);
}
/*
* Set capture broadcast bit to capture broadcast frames.
*/
if (ifp->if_flags & IFF_BROADCAST) {
DIO_SEL(TL_NETCMD);
DIO_BYTE0_CLR(TL_CMD_NOBRX);
} else {
DIO_SEL(TL_NETCMD);
DIO_BYTE0_SET(TL_CMD_NOBRX);
}
/* Init our MAC address */
DIO_SEL(TL_AREG0_B5);
csr->u.tl_dio_bytes.byte0 = sc->arpcom.ac_enaddr[0];
csr->u.tl_dio_bytes.byte1 = sc->arpcom.ac_enaddr[1];
csr->u.tl_dio_bytes.byte2 = sc->arpcom.ac_enaddr[2];
csr->u.tl_dio_bytes.byte3 = sc->arpcom.ac_enaddr[3];
DIO_SEL(TL_AREG0_B1);
csr->u.tl_dio_bytes.byte0 = sc->arpcom.ac_enaddr[4];
csr->u.tl_dio_bytes.byte1 = sc->arpcom.ac_enaddr[5];
/* Init circular RX list. */
if (tl_list_rx_init(sc)) {
printf("tl%d: failed to set up rx lists\n", sc->tl_unit);
return;
}
/* Init TX pointers. */
tl_list_tx_init(sc);
/*
* Enable PHY interrupts.
*/
phy_sts = tl_phy_readreg(sc, TL_PHY_CTL);
phy_sts |= PHY_CTL_INTEN;
tl_phy_writereg(sc, TL_PHY_CTL, phy_sts);
/* Enable MII interrupts. */
DIO_SEL(TL_NETSIO);
DIO_BYTE1_SET(TL_SIO_MINTEN);
/* Enable PCI interrupts. */
csr->tl_host_cmd |= TL_CMD_INTSON;
/* Load the address of the rx list */
sc->csr->tl_host_cmd |= TL_CMD_RT;
sc->csr->tl_ch_parm = vtophys(&sc->tl_ldata->tl_rx_list[0]);
/* Send the RX go command */
sc->csr->tl_host_cmd |= (TL_CMD_GO|TL_CMD_RT);
sc->tl_iflist->tl_active_phy = sc->tl_phy_addr;
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
(void)splx(s);
/* Start the stats update counter */
sc->tl_stat_ch = timeout(tl_stats_update, sc, hz);
return;
}
/*
* Set media options.
*/
static int tl_ifmedia_upd(ifp)
struct ifnet *ifp;
{
struct tl_softc *sc;
struct tl_csr *csr;
struct ifmedia *ifm;
sc = ifp->if_softc;
csr = sc->csr;
ifm = &sc->ifmedia;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return(EINVAL);
if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO)
tl_autoneg(sc, TL_FLAG_SCHEDDELAY, 1);
else
tl_setmode(sc, ifm->ifm_media);
return(0);
}
/*
* Report current media status.
*/
static void tl_ifmedia_sts(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
u_int16_t phy_ctl;
u_int16_t phy_sts;
struct tl_softc *sc;
struct tl_csr *csr;
sc = ifp->if_softc;
csr = sc->csr;
ifmr->ifm_active = IFM_ETHER;
phy_ctl = tl_phy_readreg(sc, PHY_BMCR);
phy_sts = tl_phy_readreg(sc, TL_PHY_CTL);
if (phy_sts & PHY_CTL_AUISEL)
ifmr->ifm_active |= IFM_10_5;
if (phy_ctl & PHY_BMCR_LOOPBK)
ifmr->ifm_active |= IFM_LOOP;
if (phy_ctl & PHY_BMCR_SPEEDSEL)
ifmr->ifm_active |= IFM_100_TX;
else
ifmr->ifm_active |= IFM_10_T;
if (phy_ctl & PHY_BMCR_DUPLEX) {
ifmr->ifm_active |= IFM_FDX;
ifmr->ifm_active &= ~IFM_HDX;
} else {
ifmr->ifm_active &= ~IFM_FDX;
ifmr->ifm_active |= IFM_HDX;
}
if (phy_ctl & PHY_BMCR_AUTONEGENBL)
ifmr->ifm_active |= IFM_AUTO;
return;
}
static int tl_ioctl(ifp, command, data)
struct ifnet *ifp;
int command;
caddr_t data;
{
struct tl_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *) data;
int s, error = 0;
s = splimp();
switch(command) {
case SIOCSIFADDR:
case SIOCGIFADDR:
case SIOCSIFMTU:
error = ether_ioctl(ifp, command, data);
break;
case SIOCSIFFLAGS:
/*
* Make sure no more than one PHY is active
* at any one time.
*/
if (ifp->if_flags & IFF_UP) {
if (sc->tl_iflist->tl_active_phy != TL_PHYS_IDLE &&
sc->tl_iflist->tl_active_phy != sc->tl_phy_addr) {
error = EINVAL;
break;
}
sc->tl_iflist->tl_active_phy = sc->tl_phy_addr;
tl_init(sc);
} else {
if (ifp->if_flags & IFF_RUNNING) {
sc->tl_iflist->tl_active_phy = TL_PHYS_IDLE;
tl_stop(sc);
}
}
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
tl_setmulti(sc);
error = 0;
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command);
break;
default:
error = EINVAL;
break;
}
(void)splx(s);
return(error);
}
static void tl_watchdog(ifp)
struct ifnet *ifp;
{
struct tl_softc *sc;
u_int16_t bmsr;
sc = ifp->if_softc;
if (sc->tl_autoneg) {
tl_autoneg(sc, TL_FLAG_DELAYTIMEO, 1);
return;
}
/* Check that we're still connected. */
tl_phy_readreg(sc, PHY_BMSR);
bmsr = tl_phy_readreg(sc, PHY_BMSR);
if (!(bmsr & PHY_BMSR_LINKSTAT)) {
printf("tl%d: no carrier\n", sc->tl_unit);
tl_autoneg(sc, TL_FLAG_SCHEDDELAY, 1);
} else
printf("tl%d: device timeout\n", sc->tl_unit);
ifp->if_oerrors++;
tl_init(sc);
return;
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void tl_stop(sc)
struct tl_softc *sc;
{
register int i;
struct ifnet *ifp;
struct tl_csr *csr;
struct tl_mii_frame frame;
csr = sc->csr;
ifp = &sc->arpcom.ac_if;
/* Stop the stats updater. */
untimeout(tl_stats_update, sc, sc->tl_stat_ch);
/* Stop the transmitter */
sc->csr->tl_host_cmd &= TL_CMD_RT;
sc->csr->tl_host_cmd |= TL_CMD_STOP;
/* Stop the receiver */
sc->csr->tl_host_cmd |= TL_CMD_RT;
sc->csr->tl_host_cmd |= TL_CMD_STOP;
/*
* Disable host interrupts.
*/
sc->csr->tl_host_cmd |= TL_CMD_INTSOFF;
/*
* Disable PHY interrupts.
*/
bzero((char *)&frame, sizeof(frame));
frame.mii_phyaddr = sc->tl_phy_addr;
frame.mii_regaddr = TL_PHY_CTL;
tl_mii_readreg(csr, &frame);
frame.mii_data |= PHY_CTL_INTEN;
tl_mii_writereg(csr, &frame);
/*
* Disable MII interrupts.
*/
DIO_SEL(TL_NETSIO);
DIO_BYTE1_CLR(TL_SIO_MINTEN);
/*
* Clear list pointer.
*/
sc->csr->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));
sc->tl_iflist->tl_active_phy = TL_PHYS_IDLE;
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
return;
}
/*
* Stop all chip I/O so that the kernel's probe routines don't
* get confused by errant DMAs when rebooting.
*/
static void tl_shutdown(howto, xilist)
int howto;
void *xilist;
{
struct tl_iflist *ilist = (struct tl_iflist *)xilist;
struct tl_csr *csr = ilist->csr;
struct tl_mii_frame frame;
int i;
/* Stop the transmitter */
csr->tl_host_cmd &= TL_CMD_RT;
csr->tl_host_cmd |= TL_CMD_STOP;
/* Stop the receiver */
csr->tl_host_cmd |= TL_CMD_RT;
csr->tl_host_cmd |= TL_CMD_STOP;
/*
* Disable host interrupts.
*/
csr->tl_host_cmd |= TL_CMD_INTSOFF;
/*
* Disable PHY interrupts.
*/
bzero((char *)&frame, sizeof(frame));
for (i = TL_PHYADDR_MIN; i < TL_PHYADDR_MAX + 1; i++) {
frame.mii_phyaddr = i;
frame.mii_regaddr = TL_PHY_CTL;
tl_mii_readreg(csr, &frame);
frame.mii_data |= PHY_CTL_INTEN;
tl_mii_writereg(csr, &frame);
};
/*
* Disable MII interrupts.
*/
DIO_SEL(TL_NETSIO);
DIO_BYTE1_CLR(TL_SIO_MINTEN);
return;
}
static struct pci_device tlc_device = {
"tlc",
tl_probe,
tl_attach_ctlr,
&tl_count,
NULL
};
DATA_SET(pcidevice_set, tlc_device);
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