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(reporting IFM_LOOP based on BMCR_LOOP is left in place though as it might provide useful for debugging). For most mii(4) drivers it was unclear whether the PHYs driven by them actually support loopback or not. Moreover, typically loopback mode also needs to be activated on the MAC, which none of the Ethernet drivers using mii(4) implements. Given that loopback media has no real use (and obviously hardly had a chance to actually work) besides for driver development (which just loopback mode should be sufficient for though, i.e one doesn't necessary need support for loopback media) support for it is just dropped as both NetBSD and OpenBSD already did quite some time ago. - Let mii_phy_add_media() also announce the support of IFM_NONE. - Restructure the PHY entry points to use a structure of entry points instead of discrete function pointers, and extend this to include a "reset" entry point. Make sure any PHY-specific reset routine is always used, and provide one for lxtphy(4) which disables MII interrupts (as is done for a few other PHYs we have drivers for). This includes changing NIC drivers which previously just called the generic mii_phy_reset() to now actually call the PHY-specific reset routine, which might be crucial in some cases. While at it, the redundant checks in these NIC drivers for mii->mii_instance not being zero before calling the reset routines were removed because as soon as one PHY driver attaches mii->mii_instance is incremented and we hardly can end up in their media change callbacks etc if no PHY driver has attached as mii_attach() would have failed in that case and not attach a miibus(4) instance. Consequently, NIC drivers now no longer should call mii_phy_reset() directly, so it was removed from EXPORT_SYMS. - Add a mii_phy_dev_attach() as a companion helper to mii_phy_dev_probe(). The purpose of that function is to perform the common steps to attach a PHY driver instance and to hook it up to the miibus(4) instance and to optionally also handle the probing, addition and initialization of the supported media. So all a PHY driver without any special requirements has to do in its bus attach method is to call mii_phy_dev_attach() along with PHY-specific MIIF_* flags, a pointer to its PHY functions and the add_media set to one. All PHY drivers were updated to take advantage of mii_phy_dev_attach() as appropriate. Along with these changes the capability mask was added to the mii_softc structure so PHY drivers taking advantage of mii_phy_dev_attach() but still handling media on their own do not need to fiddle with the MII attach arguments anyway. - Keep track of the PHY offset in the mii_softc structure. This is done for compatibility with NetBSD/OpenBSD. - Keep track of the PHY's OUI, model and revision in the mii_softc structure. Several PHY drivers require this information also after attaching and previously had to wrap their own softc around mii_softc. NetBSD/OpenBSD also keep track of the model and revision on their mii_softc structure. All PHY drivers were updated to take advantage as appropriate. - Convert the mebers of the MII data structure to unsigned where appropriate. This is partly inspired by NetBSD/OpenBSD. - According to IEEE 802.3-2002 the bits actually have to be reversed when mapping an OUI to the MII ID registers. All PHY drivers and miidevs where changed as necessary. Actually this now again allows to largely share miidevs with NetBSD, which fixed this problem already 9 years ago. Consequently miidevs was synced as far as possible. - Add MIIF_NOMANPAUSE and mii_phy_flowstatus() calls to drivers that weren't explicitly converted to support flow control before. It's unclear whether flow control actually works with these but typically it should and their net behavior should be more correct with these changes in place than without if the MAC driver sets MIIF_DOPAUSE. Obtained from: NetBSD (partially) Reviewed by: yongari (earlier version), silence on arch@ and net@
288 lines
9.4 KiB
C
288 lines
9.4 KiB
C
/* $NetBSD: miivar.h,v 1.8 1999/04/23 04:24:32 thorpej Exp $ */
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/*-
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* Copyright (c) 1998, 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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* $FreeBSD$
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*/
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#ifndef _DEV_MII_MIIVAR_H_
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#define _DEV_MII_MIIVAR_H_
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#include <sys/queue.h>
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/*
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* Media Independent Interface data structure defintions
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*/
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struct mii_softc;
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/*
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* Callbacks from MII layer into network interface device driver.
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*/
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typedef int (*mii_readreg_t)(struct device *, int, int);
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typedef void (*mii_writereg_t)(struct device *, int, int, int);
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typedef void (*mii_statchg_t)(struct device *);
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/*
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* A network interface driver has one of these structures in its softc.
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* It is the interface from the network interface driver to the MII
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* layer.
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*/
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struct mii_data {
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struct ifmedia mii_media; /* media information */
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struct ifnet *mii_ifp; /* pointer back to network interface */
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/*
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* For network interfaces with multiple PHYs, a list of all
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* PHYs is required so they can all be notified when a media
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* request is made.
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*/
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LIST_HEAD(mii_listhead, mii_softc) mii_phys;
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u_int mii_instance;
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/*
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* PHY driver fills this in with active media status.
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*/
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u_int mii_media_status;
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u_int mii_media_active;
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/*
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* Calls from MII layer into network interface driver.
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*/
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mii_readreg_t mii_readreg;
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mii_writereg_t mii_writereg;
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mii_statchg_t mii_statchg;
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};
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typedef struct mii_data mii_data_t;
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/*
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* Functions provided by the PHY to perform various functions.
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*/
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struct mii_phy_funcs {
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int (*pf_service)(struct mii_softc *, struct mii_data *, int);
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void (*pf_status)(struct mii_softc *);
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void (*pf_reset)(struct mii_softc *);
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};
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/*
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* Requests that can be made to the downcall.
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*/
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#define MII_TICK 1 /* once-per-second tick */
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#define MII_MEDIACHG 2 /* user changed media; perform the switch */
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#define MII_POLLSTAT 3 /* user requested media status; fill it in */
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/*
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* Each PHY driver's softc has one of these as the first member.
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* XXX This would be better named "phy_softc", but this is the name
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* XXX BSDI used, and we would like to have the same interface.
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*/
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struct mii_softc {
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device_t mii_dev; /* generic device glue */
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LIST_ENTRY(mii_softc) mii_list; /* entry on parent's PHY list */
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uint32_t mii_mpd_oui; /* the PHY's OUI (MII_OUI())*/
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uint32_t mii_mpd_model; /* the PHY's model (MII_MODEL())*/
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uint32_t mii_mpd_rev; /* the PHY's revision (MII_REV())*/
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u_int mii_capmask; /* capability mask for BMSR */
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u_int mii_phy; /* our MII address */
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u_int mii_offset; /* first PHY, second PHY, etc. */
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u_int mii_inst; /* instance for ifmedia */
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/* Our PHY functions. */
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const struct mii_phy_funcs *mii_funcs;
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struct mii_data *mii_pdata; /* pointer to parent's mii_data */
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u_int mii_flags; /* misc. flags; see below */
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u_int mii_capabilities; /* capabilities from BMSR */
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u_int mii_extcapabilities; /* extended capabilities */
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u_int mii_ticks; /* MII_TICK counter */
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u_int mii_anegticks; /* ticks before retrying aneg */
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u_int mii_media_active; /* last active media */
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u_int mii_media_status; /* last active status */
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};
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typedef struct mii_softc mii_softc_t;
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/* mii_flags */
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#define MIIF_INITDONE 0x00000001 /* has been initialized (mii_data) */
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#define MIIF_NOISOLATE 0x00000002 /* do not isolate the PHY */
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#if 0
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#define MIIF_NOLOOP 0x00000004 /* no loopback capability */
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#endif
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#define MIIF_DOINGAUTO 0x00000008 /* doing autonegotiation (mii_softc) */
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#define MIIF_AUTOTSLEEP 0x00000010 /* use tsleep(), not callout() */
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#define MIIF_HAVEFIBER 0x00000020 /* from parent: has fiber interface */
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#define MIIF_HAVE_GTCR 0x00000040 /* has 100base-T2/1000base-T CR */
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#define MIIF_IS_1000X 0x00000080 /* is a 1000BASE-X device */
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#define MIIF_DOPAUSE 0x00000100 /* advertise PAUSE capability */
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#define MIIF_IS_HPNA 0x00000200 /* is a HomePNA device */
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#define MIIF_FORCEANEG 0x00000400 /* force auto-negotiation */
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#define MIIF_NOMANPAUSE 0x00100000 /* no manual PAUSE selection */
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#define MIIF_FORCEPAUSE 0x00200000 /* force PAUSE advertisement */
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#define MIIF_MACPRIV0 0x01000000 /* private to the MAC driver */
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#define MIIF_MACPRIV1 0x02000000 /* private to the MAC driver */
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#define MIIF_MACPRIV2 0x04000000 /* private to the MAC driver */
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#define MIIF_PHYPRIV0 0x10000000 /* private to the PHY driver */
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#define MIIF_PHYPRIV1 0x20000000 /* private to the PHY driver */
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#define MIIF_PHYPRIV2 0x40000000 /* private to the PHY driver */
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/* Default mii_anegticks values */
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#define MII_ANEGTICKS 5
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#define MII_ANEGTICKS_GIGE 17
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#define MIIF_INHERIT_MASK (MIIF_NOISOLATE|MIIF_NOLOOP|MIIF_AUTOTSLEEP)
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/*
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* Special `locators' passed to mii_attach(). If one of these is not
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* an `any' value, we look for *that* PHY and configure it. If both
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* are not `any', that is an error, and mii_attach() will fail.
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*/
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#define MII_OFFSET_ANY -1
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#define MII_PHY_ANY -1
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/*
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* Used to attach a PHY to a parent.
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*/
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struct mii_attach_args {
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struct mii_data *mii_data; /* pointer to parent data */
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u_int mii_phyno; /* MII address */
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u_int mii_offset; /* first PHY, second PHY, etc. */
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uint32_t mii_id1; /* PHY ID register 1 */
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uint32_t mii_id2; /* PHY ID register 2 */
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u_int mii_capmask; /* capability mask for BMSR */
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};
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typedef struct mii_attach_args mii_attach_args_t;
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/*
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* Used to match a PHY.
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*/
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struct mii_phydesc {
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uint32_t mpd_oui; /* the PHY's OUI */
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uint32_t mpd_model; /* the PHY's model */
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const char *mpd_name; /* the PHY's name */
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};
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#define MII_PHY_DESC(a, b) { MII_OUI_ ## a, MII_MODEL_ ## a ## _ ## b, \
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MII_STR_ ## a ## _ ## b }
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#define MII_PHY_END { 0, 0, NULL }
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/*
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* An array of these structures map MII media types to BMCR/ANAR settings.
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*/
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struct mii_media {
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u_int mm_bmcr; /* BMCR settings for this media */
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u_int mm_anar; /* ANAR settings for this media */
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u_int mm_gtcr; /* 100base-T2 or 1000base-T CR */
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};
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#define MII_MEDIA_NONE 0
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#define MII_MEDIA_10_T 1
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#define MII_MEDIA_10_T_FDX 2
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#define MII_MEDIA_100_T4 3
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#define MII_MEDIA_100_TX 4
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#define MII_MEDIA_100_TX_FDX 5
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#define MII_MEDIA_1000_X 6
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#define MII_MEDIA_1000_X_FDX 7
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#define MII_MEDIA_1000_T 8
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#define MII_MEDIA_1000_T_FDX 9
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#define MII_NMEDIA 10
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#ifdef _KERNEL
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#define PHY_READ(p, r) \
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MIIBUS_READREG((p)->mii_dev, (p)->mii_phy, (r))
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#define PHY_WRITE(p, r, v) \
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MIIBUS_WRITEREG((p)->mii_dev, (p)->mii_phy, (r), (v))
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#define PHY_SERVICE(p, d, o) \
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(*(p)->mii_funcs->pf_service)((p), (d), (o))
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#define PHY_STATUS(p) \
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(*(p)->mii_funcs->pf_status)(p)
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#define PHY_RESET(p) \
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(*(p)->mii_funcs->pf_reset)(p)
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enum miibus_device_ivars {
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MIIBUS_IVAR_FLAGS
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};
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/*
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* Simplified accessors for miibus
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*/
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#define MIIBUS_ACCESSOR(var, ivar, type) \
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__BUS_ACCESSOR(miibus, var, MIIBUS, ivar, type)
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MIIBUS_ACCESSOR(flags, FLAGS, u_int)
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extern devclass_t miibus_devclass;
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extern driver_t miibus_driver;
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int miibus_probe(device_t);
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int miibus_attach(device_t);
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int miibus_detach(device_t);
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int mii_attach(device_t, device_t *, struct ifnet *, ifm_change_cb_t,
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ifm_stat_cb_t, int, int, int, int);
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void mii_down(struct mii_data *);
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int mii_mediachg(struct mii_data *);
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void mii_tick(struct mii_data *);
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void mii_pollstat(struct mii_data *);
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void mii_phy_add_media(struct mii_softc *);
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int mii_phy_auto(struct mii_softc *);
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int mii_phy_detach(device_t dev);
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void mii_phy_down(struct mii_softc *);
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u_int mii_phy_flowstatus(struct mii_softc *);
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void mii_phy_reset(struct mii_softc *);
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void mii_phy_setmedia(struct mii_softc *sc);
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void mii_phy_update(struct mii_softc *, int);
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int mii_phy_tick(struct mii_softc *);
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const struct mii_phydesc * mii_phy_match(const struct mii_attach_args *ma,
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const struct mii_phydesc *mpd);
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const struct mii_phydesc * mii_phy_match_gen(const struct mii_attach_args *ma,
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const struct mii_phydesc *mpd, size_t endlen);
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int mii_phy_dev_probe(device_t dev, const struct mii_phydesc *mpd, int mrv);
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void mii_phy_dev_attach(device_t dev, u_int flags,
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const struct mii_phy_funcs *mpf, int add_media);
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void ukphy_status(struct mii_softc *);
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u_int mii_oui(u_int, u_int);
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#define MII_OUI(id1, id2) mii_oui(id1, id2)
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#define MII_MODEL(id2) (((id2) & IDR2_MODEL) >> 4)
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#define MII_REV(id2) ((id2) & IDR2_REV)
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#endif /* _KERNEL */
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#endif /* _DEV_MII_MIIVAR_H_ */
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