a5cdd4b441
int (*mii_readreg_t)(device_t, int, int); void (*mii_writereg_t)(device_t, int, int, int); to: int (*mii_readreg_t)(device_t, int, int, uint16_t *); int (*mii_writereg_t)(device_t, int, int, uint16_t); Now we can test if a read/write operation failed or not by the return value. In 802.3 spec says that the PHY shall not respond to read/write transaction to the unimplemented register(22.2.4.3). Detecting timeout can be used to check whether a register is implemented or not (if the register conforms to the spec). ukphy(4) can be used this for MII_MMDACR and MII_MMDAADR. Note that I noticed that the following code do infinite loop in the read/wirte function. If it accesses unimplemented PHY register, it will hang. It should be fixed: arm/at91/at91emac.c arm/ep93xx/epe.c arm/omap/omapl1x_emac.c mips/ralink/ralink_eth.c arch/powerpc/booke/dev/pq3etsec.c(read) dev/cadence/if_cemac.c <- hkenken dev/ic/lan9118.c Tested with the following device: axe+ukphy axe+rgephy axen+rgephy (tested by Andrius V) wm+atphy wm+ukphy wm+igphy wm+ihphy wm+makphy sk+makphy sk+brgphy sk+gentbi msk+makphy sip+icsphy sip+ukphy re+rgephy bge+brgphy bnx+brgphy gsip+gphyter rtk+rlphy fxp+inphy (tested by Andrius V) tlp+acphy ex+exphy epic+qsphy vge+ciphy (tested by Andrius V) vr+ukphy (tested by Andrius V) vte+ukphy (tested by Andrius V) Not tested (MAC): arm:at91emac arm:cemac arm:epe arm:geminigmac arm:enet arm:cpsw arm:emac(omac) arm:emac(sunxi) arm:npe evbppc:temac macppc:bm macppc:gm mips:aumac mips:ae mips:cnmac mips:reth mips:sbmac playstation2:smap powerpc:tsec powerpc:emac(ibm4xx) sgimips:mec sparc:be sf ne(ax88190, dl10019) awge ep gem hme smsh mtd sm age alc ale bce cas et jme lii nfe pcn ste stge tl xi aue mue smsc udav url Not tested (PHY): amhphy bmtphy dmphy etphy glxtphy ikphy iophy lxtphy nsphyter pnaphy rdcphy sqphy tlphy tqphy urlphy
50 lines
2.2 KiB
C
50 lines
2.2 KiB
C
/* $NetBSD: mii_bitbang.h,v 1.7 2019/01/22 03:42:27 msaitoh Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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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 THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#define MII_BIT_MDO 0 /* data out (host->PHY) */
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#define MII_BIT_MDI 1 /* data in (PHY->host) */
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#define MII_BIT_MDC 2 /* clock */
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#define MII_BIT_DIR_HOST_PHY 3 /* set direction: host->PHY */
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#define MII_BIT_DIR_PHY_HOST 4 /* set direction: PHY->host */
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#define MII_NBITS 5
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struct mii_bitbang_ops {
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uint32_t (*mbo_read)(device_t);
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void (*mbo_write)(device_t, uint32_t);
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uint32_t mbo_bits[MII_NBITS];
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};
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typedef const struct mii_bitbang_ops *mii_bitbang_ops_t;
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int mii_bitbang_readreg(device_t, mii_bitbang_ops_t, int, int, uint16_t *);
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int mii_bitbang_writereg(device_t, mii_bitbang_ops_t, int, int, uint16_t);
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