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8c1093fc50
take advantage of it instead of duplicating it. This reduces the size of the i386 GENERIC kernel by about 4k. The only potential in-tree user left unconverted is xe(4), which generally should be changed to use miibus(4) instead of implementing PHY handling on its own, as otherwise it makes not much sense to add a dependency on miibus(4)/mii_bitbang(4) to xe(4) just for the MII bitbang'ing code. The common MII bitbang'ing code also is useful in the embedded space for using GPIO pins to implement MII access. - Based on lessons learnt with dc(4) (see r185750), add bus barriers to the MII bitbang read and write functions of the other drivers converted in order to ensure the intended ordering. Given that register access via an index register as well as register bank/window switching is subject to the same problem, also add bus barriers to the respective functions of smc(4), tl(4) and xl(4). - Sprinkle some const. Thanks to the following testers: Andrew Bliznak (nge(4)), nwhitehorn@ (bm(4)), yongari@ (sis(4) and ste(4)) Thanks to Hans-Joerg Sirtl for supplying hardware to test stge(4). Reviewed by: yongari (subset of drivers) Obtained from: NetBSD (partially)
444 lines
14 KiB
C
444 lines
14 KiB
C
/*-
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* Copyright (c) 1997, 1998
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* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Winbond register definitions.
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*/
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#define WB_BUSCTL 0x00 /* bus control */
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#define WB_TXSTART 0x04 /* tx start demand */
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#define WB_RXSTART 0x08 /* rx start demand */
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#define WB_RXADDR 0x0C /* rx descriptor list start addr */
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#define WB_TXADDR 0x10 /* tx descriptor list start addr */
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#define WB_ISR 0x14 /* interrupt status register */
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#define WB_NETCFG 0x18 /* network config register */
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#define WB_IMR 0x1C /* interrupt mask */
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#define WB_FRAMESDISCARDED 0x20 /* # of discarded frames */
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#define WB_SIO 0x24 /* MII and ROM/EEPROM access */
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#define WB_BOOTROMADDR 0x28
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#define WB_TIMER 0x2C /* general timer */
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#define WB_CURRXCTL 0x30 /* current RX descriptor */
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#define WB_CURRXBUF 0x34 /* current RX buffer */
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#define WB_MAR0 0x38 /* multicast filter 0 */
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#define WB_MAR1 0x3C /* multicast filter 1 */
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#define WB_NODE0 0x40 /* station address 0 */
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#define WB_NODE1 0x44 /* station address 1 */
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#define WB_BOOTROMSIZE 0x48 /* boot ROM size */
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#define WB_CURTXCTL 0x4C /* current TX descriptor */
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#define WB_CURTXBUF 0x50 /* current TX buffer */
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/*
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* Bus control bits.
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*/
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#define WB_BUSCTL_RESET 0x00000001
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#define WB_BUSCTL_ARBITRATION 0x00000002
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#define WB_BUSCTL_SKIPLEN 0x0000007C
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#define WB_BUSCTL_BUF_BIGENDIAN 0x00000080
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#define WB_BUSCTL_BURSTLEN 0x00003F00
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#define WB_BUSCTL_CACHEALIGN 0x0000C000
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#define WB_BUSCTL_DES_BIGENDIAN 0x00100000
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#define WB_BUSCTL_WAIT 0x00200000
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#define WB_BUSCTL_MUSTBEONE 0x00400000
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#define WB_SKIPLEN_1LONG 0x00000004
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#define WB_SKIPLEN_2LONG 0x00000008
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#define WB_SKIPLEN_3LONG 0x00000010
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#define WB_SKIPLEN_4LONG 0x00000020
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#define WB_SKIPLEN_5LONG 0x00000040
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#define WB_CACHEALIGN_NONE 0x00000000
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#define WB_CACHEALIGN_8LONG 0x00004000
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#define WB_CACHEALIGN_16LONG 0x00008000
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#define WB_CACHEALIGN_32LONG 0x0000C000
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#define WB_BURSTLEN_USECA 0x00000000
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#define WB_BURSTLEN_1LONG 0x00000100
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#define WB_BURSTLEN_2LONG 0x00000200
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#define WB_BURSTLEN_4LONG 0x00000400
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#define WB_BURSTLEN_8LONG 0x00000800
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#define WB_BURSTLEN_16LONG 0x00001000
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#define WB_BURSTLEN_32LONG 0x00002000
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#define WB_BUSCTL_CONFIG (WB_CACHEALIGN_8LONG|WB_SKIPLEN_3LONG| \
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WB_BURSTLEN_8LONG)
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/*
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* Interrupt status bits.
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*/
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#define WB_ISR_TX_OK 0x00000001
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#define WB_ISR_TX_IDLE 0x00000002
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#define WB_ISR_TX_NOBUF 0x00000004
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#define WB_ISR_RX_EARLY 0x00000008
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#define WB_ISR_RX_ERR 0x00000010
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#define WB_ISR_TX_UNDERRUN 0x00000020
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#define WB_ISR_RX_OK 0x00000040
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#define WB_ISR_RX_NOBUF 0x00000080
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#define WB_ISR_RX_IDLE 0x00000100
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#define WB_ISR_TX_EARLY 0x00000400
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#define WB_ISR_TIMER_EXPIRED 0x00000800
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#define WB_ISR_BUS_ERR 0x00002000
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#define WB_ISR_ABNORMAL 0x00008000
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#define WB_ISR_NORMAL 0x00010000
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#define WB_ISR_RX_STATE 0x000E0000
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#define WB_ISR_TX_STATE 0x00700000
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#define WB_ISR_BUSERRTYPE 0x03800000
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/*
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* The RX_STATE and TX_STATE fields are not described anywhere in the
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* Winbond datasheet, however it appears that the Winbond chip is an
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* attempt at a DEC 'tulip' clone, hence the ISR register is identical
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* to that of the tulip chip and we can steal the bit definitions from
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* the tulip documentation.
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*/
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#define WB_RXSTATE_STOPPED 0x00000000 /* 000 - Stopped */
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#define WB_RXSTATE_FETCH 0x00020000 /* 001 - Fetching descriptor */
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#define WB_RXSTATE_ENDCHECK 0x00040000 /* 010 - check for rx end */
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#define WB_RXSTATE_WAIT 0x00060000 /* 011 - waiting for packet */
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#define WB_RXSTATE_SUSPEND 0x00080000 /* 100 - suspend rx */
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#define WB_RXSTATE_CLOSE 0x000A0000 /* 101 - close tx desc */
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#define WB_RXSTATE_FLUSH 0x000C0000 /* 110 - flush from FIFO */
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#define WB_RXSTATE_DEQUEUE 0x000E0000 /* 111 - dequeue from FIFO */
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#define WB_TXSTATE_RESET 0x00000000 /* 000 - reset */
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#define WB_TXSTATE_FETCH 0x00100000 /* 001 - fetching descriptor */
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#define WB_TXSTATE_WAITEND 0x00200000 /* 010 - wait for tx end */
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#define WB_TXSTATE_READING 0x00300000 /* 011 - read and enqueue */
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#define WB_TXSTATE_RSVD 0x00400000 /* 100 - reserved */
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#define WB_TXSTATE_SETUP 0x00500000 /* 101 - setup packet */
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#define WB_TXSTATE_SUSPEND 0x00600000 /* 110 - suspend tx */
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#define WB_TXSTATE_CLOSE 0x00700000 /* 111 - close tx desc */
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/*
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* Network config bits.
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*/
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#define WB_NETCFG_RX_ON 0x00000002
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#define WB_NETCFG_RX_ALLPHYS 0x00000008
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#define WB_NETCFG_RX_MULTI 0x00000010
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#define WB_NETCFG_RX_BROAD 0x00000020
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#define WB_NETCFG_RX_RUNT 0x00000040
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#define WB_NETCFG_RX_ERR 0x00000080
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#define WB_NETCFG_FULLDUPLEX 0x00000200
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#define WB_NETCFG_LOOPBACK 0x00000C00
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#define WB_NETCFG_TX_ON 0x00002000
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#define WB_NETCFG_TX_THRESH 0x001FC000
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#define WB_NETCFG_RX_EARLYTHRSH 0x1FE00000
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#define WB_NETCFG_100MBPS 0x20000000
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#define WB_NETCFG_TX_EARLY_ON 0x40000000
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#define WB_NETCFG_RX_EARLY_ON 0x80000000
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/*
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* The tx threshold can be adjusted in increments of 32 bytes.
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*/
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#define WB_TXTHRESH(x) ((x >> 5) << 14)
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#define WB_TXTHRESH_CHUNK 32
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#define WB_TXTHRESH_INIT 0 /*72*/
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/*
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* Interrupt mask bits.
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*/
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#define WB_IMR_TX_OK 0x00000001
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#define WB_IMR_TX_IDLE 0x00000002
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#define WB_IMR_TX_NOBUF 0x00000004
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#define WB_IMR_RX_EARLY 0x00000008
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#define WB_IMR_RX_ERR 0x00000010
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#define WB_IMR_TX_UNDERRUN 0x00000020
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#define WB_IMR_RX_OK 0x00000040
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#define WB_IMR_RX_NOBUF 0x00000080
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#define WB_IMR_RX_IDLE 0x00000100
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#define WB_IMR_TX_EARLY 0x00000400
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#define WB_IMR_TIMER_EXPIRED 0x00000800
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#define WB_IMR_BUS_ERR 0x00002000
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#define WB_IMR_ABNORMAL 0x00008000
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#define WB_IMR_NORMAL 0x00010000
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#define WB_INTRS \
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(WB_IMR_RX_OK|WB_IMR_TX_OK|WB_IMR_RX_NOBUF|WB_IMR_RX_ERR| \
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WB_IMR_TX_NOBUF|WB_IMR_TX_UNDERRUN|WB_IMR_BUS_ERR| \
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WB_IMR_ABNORMAL|WB_IMR_NORMAL|WB_IMR_TX_EARLY)
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/*
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* Serial I/O (EEPROM/ROM) bits.
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*/
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#define WB_SIO_EE_CS 0x00000001 /* EEPROM chip select */
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#define WB_SIO_EE_CLK 0x00000002 /* EEPROM clock */
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#define WB_SIO_EE_DATAIN 0x00000004 /* EEPROM data output */
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#define WB_SIO_EE_DATAOUT 0x00000008 /* EEPROM data input */
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#define WB_SIO_ROMDATA4 0x00000010
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#define WB_SIO_ROMDATA5 0x00000020
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#define WB_SIO_ROMDATA6 0x00000040
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#define WB_SIO_ROMDATA7 0x00000080
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#define WB_SIO_ROMCTL_WRITE 0x00000200
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#define WB_SIO_ROMCTL_READ 0x00000400
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#define WB_SIO_EESEL 0x00000800
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#define WB_SIO_MII_CLK 0x00010000 /* MDIO clock */
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#define WB_SIO_MII_DATAIN 0x00020000 /* MDIO data out */
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#define WB_SIO_MII_DIR 0x00040000 /* MDIO dir */
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#define WB_SIO_MII_DATAOUT 0x00080000 /* MDIO data in */
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#define WB_EECMD_WRITE 0x140
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#define WB_EECMD_READ 0x180
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#define WB_EECMD_ERASE 0x1c0
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/*
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* Winbond TX/RX descriptor structure.
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*/
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struct wb_desc {
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u_int32_t wb_status;
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u_int32_t wb_ctl;
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u_int32_t wb_ptr1;
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u_int32_t wb_ptr2;
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};
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#define wb_data wb_ptr1
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#define wb_next wb_ptr2
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#define WB_RXSTAT_CRCERR 0x00000002
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#define WB_RXSTAT_DRIBBLE 0x00000004
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#define WB_RXSTAT_MIIERR 0x00000008
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#define WB_RXSTAT_LATEEVENT 0x00000040
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#define WB_RXSTAT_GIANT 0x00000080
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#define WB_RXSTAT_LASTFRAG 0x00000100
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#define WB_RXSTAT_FIRSTFRAG 0x00000200
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#define WB_RXSTAT_MULTICAST 0x00000400
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#define WB_RXSTAT_RUNT 0x00000800
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#define WB_RXSTAT_RXTYPE 0x00003000
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#define WB_RXSTAT_RXERR 0x00008000
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#define WB_RXSTAT_RXLEN 0x3FFF0000
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#define WB_RXSTAT_RXCMP 0x40000000
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#define WB_RXSTAT_OWN 0x80000000
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#define WB_RXBYTES(x) ((x & WB_RXSTAT_RXLEN) >> 16)
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#define WB_RXSTAT (WB_RXSTAT_FIRSTFRAG|WB_RXSTAT_LASTFRAG|WB_RXSTAT_OWN)
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#define WB_RXCTL_BUFLEN1 0x00000FFF
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#define WB_RXCTL_BUFLEN2 0x00FFF000
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#define WB_RXCTL_RLINK 0x01000000
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#define WB_RXCTL_RLAST 0x02000000
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#define WB_TXSTAT_DEFER 0x00000001
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#define WB_TXSTAT_UNDERRUN 0x00000002
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#define WB_TXSTAT_COLLCNT 0x00000078
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#define WB_TXSTAT_SQE 0x00000080
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#define WB_TXSTAT_ABORT 0x00000100
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#define WB_TXSTAT_LATECOLL 0x00000200
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#define WB_TXSTAT_NOCARRIER 0x00000400
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#define WB_TXSTAT_CARRLOST 0x00000800
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#define WB_TXSTAT_TXERR 0x00001000
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#define WB_TXSTAT_OWN 0x80000000
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#define WB_TXCTL_BUFLEN1 0x000007FF
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#define WB_TXCTL_BUFLEN2 0x003FF800
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#define WB_TXCTL_PAD 0x00800000
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#define WB_TXCTL_TLINK 0x01000000
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#define WB_TXCTL_TLAST 0x02000000
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#define WB_TXCTL_NOCRC 0x08000000
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#define WB_TXCTL_FIRSTFRAG 0x20000000
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#define WB_TXCTL_LASTFRAG 0x40000000
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#define WB_TXCTL_FINT 0x80000000
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#define WB_MAXFRAGS 16
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#define WB_RX_LIST_CNT 64
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#define WB_TX_LIST_CNT 128
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#define WB_MIN_FRAMELEN 60
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#define ETHER_ALIGN 2
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/*
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* A transmit 'super descriptor' is actually WB_MAXFRAGS regular
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* descriptors clumped together. The idea here is to emulate the
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* multi-fragment descriptor layout found in devices such as the
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* Texas Instruments ThunderLAN and 3Com boomerang and cylone chips.
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* The advantage to using this scheme is that it avoids buffer copies.
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* The disadvantage is that there's a certain amount of overhead due
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* to the fact that each 'fragment' is 16 bytes long. In my tests,
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* this limits top speed to about 10.5MB/sec. It should be more like
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* 11.5MB/sec. However, the upshot is that you can achieve better
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* results on slower machines: a Pentium 200 can pump out packets at
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* same speed as a PII 400.
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*/
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struct wb_txdesc {
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struct wb_desc wb_frag[WB_MAXFRAGS];
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};
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#define WB_TXNEXT(x) x->wb_ptr->wb_frag[x->wb_lastdesc].wb_next
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#define WB_TXSTATUS(x) x->wb_ptr->wb_frag[x->wb_lastdesc].wb_status
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#define WB_TXCTL(x) x->wb_ptr->wb_frag[x->wb_lastdesc].wb_ctl
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#define WB_TXDATA(x) x->wb_ptr->wb_frag[x->wb_lastdesc].wb_data
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#define WB_TXOWN(x) x->wb_ptr->wb_frag[0].wb_status
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#define WB_UNSENT 0x1234
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#define WB_BUFBYTES (1024 * sizeof(u_int32_t))
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struct wb_buf {
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u_int32_t wb_data[1024];
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};
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struct wb_list_data {
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struct wb_buf wb_rxbufs[WB_RX_LIST_CNT];
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struct wb_desc wb_rx_list[WB_RX_LIST_CNT];
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struct wb_txdesc wb_tx_list[WB_TX_LIST_CNT];
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};
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struct wb_chain {
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struct wb_txdesc *wb_ptr;
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struct mbuf *wb_mbuf;
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struct wb_chain *wb_nextdesc;
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u_int8_t wb_lastdesc;
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};
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struct wb_chain_onefrag {
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struct wb_desc *wb_ptr;
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struct mbuf *wb_mbuf;
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void *wb_buf;
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struct wb_chain_onefrag *wb_nextdesc;
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u_int8_t wb_rlast;
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};
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struct wb_chain_data {
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u_int8_t wb_pad[WB_MIN_FRAMELEN];
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struct wb_chain_onefrag wb_rx_chain[WB_RX_LIST_CNT];
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struct wb_chain wb_tx_chain[WB_TX_LIST_CNT];
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struct wb_chain_onefrag *wb_rx_head;
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struct wb_chain *wb_tx_head;
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struct wb_chain *wb_tx_tail;
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struct wb_chain *wb_tx_free;
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};
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struct wb_type {
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u_int16_t wb_vid;
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u_int16_t wb_did;
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const char *wb_name;
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};
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struct wb_softc {
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struct ifnet *wb_ifp; /* interface info */
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device_t wb_dev;
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device_t wb_miibus;
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struct resource *wb_res;
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struct resource *wb_irq;
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void *wb_intrhand;
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struct wb_type *wb_info; /* Winbond adapter info */
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u_int8_t wb_type;
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u_int16_t wb_txthresh;
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int wb_cachesize;
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int wb_timer;
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caddr_t wb_ldata_ptr;
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struct wb_list_data *wb_ldata;
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struct wb_chain_data wb_cdata;
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struct callout wb_stat_callout;
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struct mtx wb_mtx;
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};
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#define WB_LOCK(_sc) mtx_lock(&(_sc)->wb_mtx)
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#define WB_UNLOCK(_sc) mtx_unlock(&(_sc)->wb_mtx)
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#define WB_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->wb_mtx, MA_OWNED)
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/*
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* register space access macros
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*/
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#define CSR_WRITE_4(sc, reg, val) bus_write_4(sc->wb_res, reg, val)
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#define CSR_WRITE_2(sc, reg, val) bus_write_2(sc->wb_res, reg, val)
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#define CSR_WRITE_1(sc, reg, val) bus_write_1(sc->wb_res, reg, val)
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#define CSR_READ_4(sc, reg) bus_read_4(sc->wb_res, reg)
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#define CSR_READ_2(sc, reg) bus_read_2(sc->wb_res, reg)
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#define CSR_READ_1(sc, reg) bus_read_1(sc->wb_res, reg)
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#define CSR_BARRIER(sc, reg, length, flags) \
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bus_barrier(sc->wb_res, reg, length, flags)
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#define WB_TIMEOUT 1000
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/*
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* General constants that are fun to know.
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*
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* Winbond PCI vendor ID
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*/
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#define WB_VENDORID 0x1050
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/*
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* Winbond device IDs.
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*/
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#define WB_DEVICEID_840F 0x0840
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/*
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* Compex vendor ID.
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*/
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#define CP_VENDORID 0x11F6
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/*
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* Compex device IDs.
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*/
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#define CP_DEVICEID_RL100 0x2011
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/*
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* PCI low memory base and low I/O base register, and
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* other PCI registers.
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*/
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#define WB_PCI_VENDOR_ID 0x00
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#define WB_PCI_DEVICE_ID 0x02
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#define WB_PCI_COMMAND 0x04
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#define WB_PCI_STATUS 0x06
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#define WB_PCI_CLASSCODE 0x09
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#define WB_PCI_CACHELEN 0x0C
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#define WB_PCI_LATENCY_TIMER 0x0D
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#define WB_PCI_HEADER_TYPE 0x0E
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#define WB_PCI_LOIO 0x10
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#define WB_PCI_LOMEM 0x14
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#define WB_PCI_BIOSROM 0x30
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#define WB_PCI_INTLINE 0x3C
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#define WB_PCI_INTPIN 0x3D
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#define WB_PCI_MINGNT 0x3E
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#define WB_PCI_MINLAT 0x0F
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#define WB_PCI_RESETOPT 0x48
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#define WB_PCI_EEPROM_DATA 0x4C
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/* power management registers */
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#define WB_PCI_CAPID 0xDC /* 8 bits */
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#define WB_PCI_NEXTPTR 0xDD /* 8 bits */
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#define WB_PCI_PWRMGMTCAP 0xDE /* 16 bits */
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#define WB_PCI_PWRMGMTCTRL 0xE0 /* 16 bits */
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#define WB_PSTATE_MASK 0x0003
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#define WB_PSTATE_D0 0x0000
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#define WB_PSTATE_D1 0x0002
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#define WB_PSTATE_D2 0x0002
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#define WB_PSTATE_D3 0x0003
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#define WB_PME_EN 0x0010
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#define WB_PME_STATUS 0x8000
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