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freebsd-nq/sys/dev/mii/mii.c

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This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
/* $NetBSD: mii.c,v 1.12 1999/08/03 19:41:49 drochner Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 THE FOUNDATION OR CONTRIBUTORS
* 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.
*/
Use __FBSDID(). Also some minor style cleanups.
2003-08-24 17:55:58 +00:00
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
/*
* MII bus layer, glues MII-capable network interface drivers to sharable
* PHY drivers. This exports an interface compatible with BSD/OS 3.0's,
* plus some NetBSD extensions.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/malloc.h>
#include <sys/module.h>
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
#include <sys/bus.h>
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
#include <net/if.h>
#include <net/if_media.h>
Link state change notification of ethernet media to the routing socket. o Extend the if_data structure with an ifi_link_state field and provide the corresponding defines for the valid states. o The mii_linkchg() callback updates the ifi_link_state field and calls rt_ifmsg() to notify listeners on the routing socket in addition to the kqueue KNOTE. o If vlans are configured on a physical interface notify and update all vlan pseudo devices as well with the vlan_link_state() callback. No objections by: sam, wpaul, ru, bms Brucification by: bde
2004-05-03 13:48:35 +00:00
#include <net/route.h>
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
Provide a tag so that miibus consumers can depend on the module, regardless of whether it is in a seperate .ko or the kernel (or in a .ko bundled with several other things in one file for packaging).
2000-04-29 13:38:26 +00:00
MODULE_VERSION(miibus, 1);
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
#include "miibus_if.h"
- In miibus_attach() remove IFM_IMASK from the dontcare_mask of the ifmedia_init() invocation. IFM_IMASK makes only sense here when all of the maxium of 32 PHYs on each one MII bus support disjoint sets of media, which generally isn't the case (though it would be nice if we had a way to let NIC drivers indicate that for the few card models where the PHY configuration is known/fixed and IFM_IMASK actually makes sense). - Add and use a miibus_print_child() for the bus_print_child method which additionally prints the PHY number (which actually is the PHY address) so one can figure out the media instance <-> PHY number mapping from the PHY driver attach output. This is intented to be usefull in situations where the addresses of the PHYs on the bus are known (f.e. of internal/ integrated PHYs) so one can feed the appropriate media instance number to ifconfig(8) (with the upcoming change for ifconfig(8)). This is more or less inspired by the NetBSD mii_print().
2007-01-20 00:55:03 +00:00
static int miibus_print_child(device_t dev, device_t child);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
static int miibus_read_ivar(device_t dev, device_t child, int which,
uintptr_t *result);
Add location and PNP info to the mii bus
2005-02-16 01:08:43 +00:00
static int miibus_child_location_str(device_t bus, device_t child, char *buf,
size_t buflen);
static int miibus_child_pnpinfo_str(device_t bus, device_t child, char *buf,
size_t buflen);
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
static int miibus_readreg(device_t, int, int);
static int miibus_writereg(device_t, int, int, int);
static void miibus_statchg(device_t);
static void miibus_linkchg(device_t);
static void miibus_mediainit(device_t);
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
static unsigned char mii_bitreverse(unsigned char x);
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
static device_method_t miibus_methods[] = {
/* device interface */
DEVMETHOD(device_probe, miibus_probe),
DEVMETHOD(device_attach, miibus_attach),
DEVMETHOD(device_detach, miibus_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* bus interface */
- In miibus_attach() remove IFM_IMASK from the dontcare_mask of the ifmedia_init() invocation. IFM_IMASK makes only sense here when all of the maxium of 32 PHYs on each one MII bus support disjoint sets of media, which generally isn't the case (though it would be nice if we had a way to let NIC drivers indicate that for the few card models where the PHY configuration is known/fixed and IFM_IMASK actually makes sense). - Add and use a miibus_print_child() for the bus_print_child method which additionally prints the PHY number (which actually is the PHY address) so one can figure out the media instance <-> PHY number mapping from the PHY driver attach output. This is intented to be usefull in situations where the addresses of the PHYs on the bus are known (f.e. of internal/ integrated PHYs) so one can feed the appropriate media instance number to ifconfig(8) (with the upcoming change for ifconfig(8)). This is more or less inspired by the NetBSD mii_print().
2007-01-20 00:55:03 +00:00
DEVMETHOD(bus_print_child, miibus_print_child),
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
DEVMETHOD(bus_read_ivar, miibus_read_ivar),
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
Add location and PNP info to the mii bus
2005-02-16 01:08:43 +00:00
DEVMETHOD(bus_child_pnpinfo_str, miibus_child_pnpinfo_str),
DEVMETHOD(bus_child_location_str, miibus_child_location_str),
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
/* MII interface */
DEVMETHOD(miibus_readreg, miibus_readreg),
DEVMETHOD(miibus_writereg, miibus_writereg),
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
DEVMETHOD(miibus_statchg, miibus_statchg),
DEVMETHOD(miibus_linkchg, miibus_linkchg),
DEVMETHOD(miibus_mediainit, miibus_mediainit),
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{ 0, 0 }
};
devclass_t miibus_devclass;
driver_t miibus_driver = {
"miibus",
miibus_methods,
sizeof(struct mii_data)
};
Define the miibus ivars as a structure, instead of as a vector of pointers. A structure is more readable and less error-prone. It also avoids problems when a function pointer doesn't have the same width as a void pointer.
2007-05-01 18:21:24 +00:00
struct miibus_ivars {
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
struct ifnet *ifp;
Define the miibus ivars as a structure, instead of as a vector of pointers. A structure is more readable and less error-prone. It also avoids problems when a function pointer doesn't have the same width as a void pointer.
2007-05-01 18:21:24 +00:00
ifm_change_cb_t ifmedia_upd;
ifm_stat_cb_t ifmedia_sts;
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
int mii_flags;
Define the miibus ivars as a structure, instead of as a vector of pointers. A structure is more readable and less error-prone. It also avoids problems when a function pointer doesn't have the same width as a void pointer.
2007-05-01 18:21:24 +00:00
};
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
int
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
miibus_probe(device_t dev)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
device_set_desc(dev, "MII bus");
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
return (BUS_PROBE_SPECIFIC);
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
int
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
miibus_attach(device_t dev)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
Define the miibus ivars as a structure, instead of as a vector of pointers. A structure is more readable and less error-prone. It also avoids problems when a function pointer doesn't have the same width as a void pointer.
2007-05-01 18:21:24 +00:00
struct miibus_ivars *ivars;
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
struct mii_attach_args *ma;
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
struct mii_data *mii;
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
device_t *children;
int i, nchildren;
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
mii = device_get_softc(dev);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
nchildren = 0;
if (device_get_children(dev, &children, &nchildren) == 0) {
for (i = 0; i < nchildren; i++) {
ma = device_get_ivars(children[i]);
ma->mii_data = mii;
}
free(children, M_TEMP);
}
if (nchildren == 0) {
Add missing newlines. MFC after: 3 days
2010-11-22 20:57:44 +00:00
device_printf(dev, "cannot get children\n");
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
return (ENXIO);
}
Define the miibus ivars as a structure, instead of as a vector of pointers. A structure is more readable and less error-prone. It also avoids problems when a function pointer doesn't have the same width as a void pointer.
2007-05-01 18:21:24 +00:00
ivars = device_get_ivars(dev);
ifmedia_init(&mii->mii_media, IFM_IMASK, ivars->ifmedia_upd,
ivars->ifmedia_sts);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
mii->mii_ifp = ivars->ifp;
mii->mii_ifp->if_capabilities |= IFCAP_LINKSTATE;
mii->mii_ifp->if_capenable |= IFCAP_LINKSTATE;
LIST_INIT(&mii->mii_phys);
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
return (bus_generic_attach(dev));
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
int
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
miibus_detach(device_t dev)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
struct mii_data *mii;
bus_generic_detach(dev);
mii = device_get_softc(dev);
ifmedia_removeall(&mii->mii_media);
mii->mii_ifp = NULL;
Try to adhere to style(9) and be consistent within this file.
2010-10-02 17:20:30 +00:00
return (0);
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
- In miibus_attach() remove IFM_IMASK from the dontcare_mask of the ifmedia_init() invocation. IFM_IMASK makes only sense here when all of the maxium of 32 PHYs on each one MII bus support disjoint sets of media, which generally isn't the case (though it would be nice if we had a way to let NIC drivers indicate that for the few card models where the PHY configuration is known/fixed and IFM_IMASK actually makes sense). - Add and use a miibus_print_child() for the bus_print_child method which additionally prints the PHY number (which actually is the PHY address) so one can figure out the media instance <-> PHY number mapping from the PHY driver attach output. This is intented to be usefull in situations where the addresses of the PHYs on the bus are known (f.e. of internal/ integrated PHYs) so one can feed the appropriate media instance number to ifconfig(8) (with the upcoming change for ifconfig(8)). This is more or less inspired by the NetBSD mii_print().
2007-01-20 00:55:03 +00:00
static int
miibus_print_child(device_t dev, device_t child)
{
struct mii_attach_args *ma;
int retval;
ma = device_get_ivars(child);
retval = bus_print_child_header(dev, child);
retval += printf(" PHY %d", ma->mii_phyno);
retval += bus_print_child_footer(dev, child);
return (retval);
}
Add location and PNP info to the mii bus
2005-02-16 01:08:43 +00:00
static int
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
miibus_read_ivar(device_t dev, device_t child __unused, int which,
uintptr_t *result)
{
struct miibus_ivars *ivars;
/*
* NB: this uses the instance variables of the miibus rather than
* its PHY children.
*/
ivars = device_get_ivars(dev);
switch (which) {
case MIIBUS_IVAR_FLAGS:
*result = ivars->mii_flags;
break;
default:
return (ENOENT);
}
return (0);
}
static int
miibus_child_pnpinfo_str(device_t bus __unused, device_t child, char *buf,
Add location and PNP info to the mii bus
2005-02-16 01:08:43 +00:00
size_t buflen)
{
Try to adhere to style(9) and be consistent within this file.
2010-10-02 17:20:30 +00:00
struct mii_attach_args *ma;
ma = device_get_ivars(child);
On second though, print the OUI, model and revision. This is the same information that's in the id1 and id2 fields we were using, but is in a form that the drivers will be using in their matching routines.
2005-02-16 05:56:39 +00:00
snprintf(buf, buflen, "oui=0x%x model=0x%x rev=0x%x",
Try to adhere to style(9) and be consistent within this file.
2010-10-02 17:20:30 +00:00
MII_OUI(ma->mii_id1, ma->mii_id2),
MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
Add location and PNP info to the mii bus
2005-02-16 01:08:43 +00:00
return (0);
}
static int
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
miibus_child_location_str(device_t bus __unused, device_t child, char *buf,
Add location and PNP info to the mii bus
2005-02-16 01:08:43 +00:00
size_t buflen)
{
Try to adhere to style(9) and be consistent within this file.
2010-10-02 17:20:30 +00:00
struct mii_attach_args *ma;
ma = device_get_ivars(child);
snprintf(buf, buflen, "phyno=%d", ma->mii_phyno);
Add location and PNP info to the mii bus
2005-02-16 01:08:43 +00:00
return (0);
}
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
static int
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
miibus_readreg(device_t dev, int phy, int reg)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
device_t parent;
parent = device_get_parent(dev);
Try to adhere to style(9) and be consistent within this file.
2010-10-02 17:20:30 +00:00
return (MIIBUS_READREG(parent, phy, reg));
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
static int
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
miibus_writereg(device_t dev, int phy, int reg, int data)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
device_t parent;
parent = device_get_parent(dev);
Try to adhere to style(9) and be consistent within this file.
2010-10-02 17:20:30 +00:00
return (MIIBUS_WRITEREG(parent, phy, reg, data));
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
static void
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
miibus_statchg(device_t dev)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
device_t parent;
- Introduce ifmedia_baudrate(), which returns correct baudrate of the given media status. [1] - Utilize ifmedia_baudrate() in miibus_statchg() to update ifp->if_baudrate. Obtained from: NetBSD [1]
2006-02-14 12:10:03 +00:00
struct mii_data *mii;
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
parent = device_get_parent(dev);
MIIBUS_STATCHG(parent);
- Introduce ifmedia_baudrate(), which returns correct baudrate of the given media status. [1] - Utilize ifmedia_baudrate() in miibus_statchg() to update ifp->if_baudrate. Obtained from: NetBSD [1]
2006-02-14 12:10:03 +00:00
mii = device_get_softc(dev);
Remove two instances of the evil hack to get the ifnet. mii_ifp is set early enough that we don't need to do these hacks anymore.
2010-03-17 22:45:53 +00:00
mii->mii_ifp->if_baudrate = ifmedia_baudrate(mii->mii_media_active);
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
Add new device method miibus_linkchg, along with a service routine.
2001-09-29 18:40:06 +00:00
static void
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
miibus_linkchg(device_t dev)
Add new device method miibus_linkchg, along with a service routine.
2001-09-29 18:40:06 +00:00
{
Cleanup link state change notification: o add new if_link_state_change routine that deals with link state changes o change mii to use if_link_state_change
2004-12-08 05:45:59 +00:00
struct mii_data *mii;
device_t parent;
int link_state;
Add new device method miibus_linkchg, along with a service routine.
2001-09-29 18:40:06 +00:00
parent = device_get_parent(dev);
MIIBUS_LINKCHG(parent);
mii = device_get_softc(dev);
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
Add new device method miibus_linkchg, along with a service routine.
2001-09-29 18:40:06 +00:00
if (mii->mii_media_status & IFM_AVALID) {
Cleanup link state change notification: o add new if_link_state_change routine that deals with link state changes o change mii to use if_link_state_change
2004-12-08 05:45:59 +00:00
if (mii->mii_media_status & IFM_ACTIVE)
Link state change notification of ethernet media to the routing socket. o Extend the if_data structure with an ifi_link_state field and provide the corresponding defines for the valid states. o The mii_linkchg() callback updates the ifi_link_state field and calls rt_ifmsg() to notify listeners on the routing socket in addition to the kqueue KNOTE. o If vlans are configured on a physical interface notify and update all vlan pseudo devices as well with the vlan_link_state() callback. No objections by: sam, wpaul, ru, bms Brucification by: bde
2004-05-03 13:48:35 +00:00
link_state = LINK_STATE_UP;
Cleanup link state change notification: o add new if_link_state_change routine that deals with link state changes o change mii to use if_link_state_change
2004-12-08 05:45:59 +00:00
else
Link state change notification of ethernet media to the routing socket. o Extend the if_data structure with an ifi_link_state field and provide the corresponding defines for the valid states. o The mii_linkchg() callback updates the ifi_link_state field and calls rt_ifmsg() to notify listeners on the routing socket in addition to the kqueue KNOTE. o If vlans are configured on a physical interface notify and update all vlan pseudo devices as well with the vlan_link_state() callback. No objections by: sam, wpaul, ru, bms Brucification by: bde
2004-05-03 13:48:35 +00:00
link_state = LINK_STATE_DOWN;
Cleanup link state change notification: o add new if_link_state_change routine that deals with link state changes o change mii to use if_link_state_change
2004-12-08 05:45:59 +00:00
} else
Link state change notification of ethernet media to the routing socket. o Extend the if_data structure with an ifi_link_state field and provide the corresponding defines for the valid states. o The mii_linkchg() callback updates the ifi_link_state field and calls rt_ifmsg() to notify listeners on the routing socket in addition to the kqueue KNOTE. o If vlans are configured on a physical interface notify and update all vlan pseudo devices as well with the vlan_link_state() callback. No objections by: sam, wpaul, ru, bms Brucification by: bde
2004-05-03 13:48:35 +00:00
link_state = LINK_STATE_UNKNOWN;
Remove two instances of the evil hack to get the ifnet. mii_ifp is set early enough that we don't need to do these hacks anymore.
2010-03-17 22:45:53 +00:00
if_link_state_change(mii->mii_ifp, link_state);
Add new device method miibus_linkchg, along with a service routine.
2001-09-29 18:40:06 +00:00
}
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
static void
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
miibus_mediainit(device_t dev)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
struct mii_data *mii;
struct ifmedia_entry *m;
int media = 0;
The ASIC on the 3c905C appears to be manufactured by Broadcom (previous ones were made by Lucent). The Broadcom chip also appears to use an internal PHY made by Broadcom which uses the Broadcom OUI. This is different from previous ASICs which always returned 0 in the PHY ID registers. To account for this, I added the necessary ID values for the Broadcom PHY so that it can be detected and attached using the 3Com PHY driver instead of defaulting to the generic one.
1999-08-29 15:42:04 +00:00
/* Poke the parent in case it has any media of its own to add. */
MIIBUS_MEDIAINIT(device_get_parent(dev));
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
mii = device_get_softc(dev);
Another round of the <sys/queue.h> FOREACH transmogriffer. Created with: sed(1) Reviewed by: md5(1)
2001-02-04 16:08:18 +00:00
LIST_FOREACH(m, &mii->mii_media.ifm_list, ifm_list) {
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
media = m->ifm_media;
Try to adhere to style(9) and be consistent within this file.
2010-10-02 17:20:30 +00:00
if (media == (IFM_ETHER | IFM_AUTO))
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
break;
}
ifmedia_set(&mii->mii_media, media);
}
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
/*
* Helper function used by network interface drivers, attaches the miibus and
* the PHYs to the network interface driver parent.
*/
Put function return types on a line by themselves. Cleanup my earlier de-__P sweep and remove whitespace between function names and paramters.
2002-10-14 22:31:52 +00:00
int
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
mii_attach(device_t dev, device_t *miibus, struct ifnet *ifp,
ifm_change_cb_t ifmedia_upd, ifm_stat_cb_t ifmedia_sts, int capmask,
int phyloc, int offloc, int flags)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
struct miibus_ivars *ivars;
struct mii_attach_args ma, *args;
device_t *children, phy;
int bmsr, first, i, nchildren, offset, phymax, phymin, rv;
if (phyloc != MII_PHY_ANY && offloc != MII_OFFSET_ANY) {
Add missing newlines. MFC after: 3 days
2010-11-22 20:57:44 +00:00
printf("%s: phyloc and offloc specified\n", __func__);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
return (EINVAL);
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
if (offloc != MII_OFFSET_ANY && (offloc < 0 || offloc >= MII_NPHY)) {
Add missing newlines. MFC after: 3 days
2010-11-22 20:57:44 +00:00
printf("%s: ivalid offloc %d\n", __func__, offloc);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
return (EINVAL);
}
if (phyloc == MII_PHY_ANY) {
phymin = 0;
phymax = MII_NPHY - 1;
} else {
if (phyloc < 0 || phyloc >= MII_NPHY) {
Add missing newlines. MFC after: 3 days
2010-11-22 20:57:44 +00:00
printf("%s: ivalid phyloc %d\n", __func__, phyloc);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
return (EINVAL);
}
phymin = phymax = phyloc;
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
first = 0;
if (*miibus == NULL) {
first = 1;
ivars = malloc(sizeof(*ivars), M_DEVBUF, M_NOWAIT);
if (ivars == NULL)
return (ENOMEM);
ivars->ifp = ifp;
ivars->ifmedia_upd = ifmedia_upd;
ivars->ifmedia_sts = ifmedia_sts;
ivars->mii_flags = flags;
*miibus = device_add_child(dev, "miibus", -1);
if (*miibus == NULL) {
rv = ENXIO;
goto fail;
}
device_set_ivars(*miibus, ivars);
} else {
ivars = device_get_ivars(*miibus);
if (ivars->ifp != ifp || ivars->ifmedia_upd != ifmedia_upd ||
ivars->ifmedia_sts != ifmedia_sts ||
ivars->mii_flags != flags) {
Add missing newlines. MFC after: 3 days
2010-11-22 20:57:44 +00:00
printf("%s: non-matching invariant\n", __func__);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
return (EINVAL);
}
/*
* Assignment of the attach arguments mii_data for the first
* pass is done in miibus_attach(), i.e. once the miibus softc
* has been allocated.
*/
ma.mii_data = device_get_softc(*miibus);
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
}
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
ma.mii_capmask = capmask;
phy = NULL;
offset = 0;
for (ma.mii_phyno = phymin; ma.mii_phyno <= phymax; ma.mii_phyno++) {
/*
* Make sure we haven't already configured a PHY at this
* address. This allows mii_attach() to be called
* multiple times.
*/
if (device_get_children(*miibus, &children, &nchildren) == 0) {
for (i = 0; i < nchildren; i++) {
args = device_get_ivars(children[i]);
if (args->mii_phyno == ma.mii_phyno) {
/*
* Yes, there is already something
* configured at this address.
*/
free(children, M_TEMP);
goto skip;
}
}
free(children, M_TEMP);
}
/*
* Check to see if there is a PHY at this address. Note,
* many braindead PHYs report 0/0 in their ID registers,
* so we test for media in the BMSR.
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
*/
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
bmsr = MIIBUS_READREG(dev, ma.mii_phyno, MII_BMSR);
if (bmsr == 0 || bmsr == 0xffff ||
(bmsr & (BMSR_EXTSTAT | BMSR_MEDIAMASK)) == 0) {
/* Assume no PHY at this address. */
continue;
}
/*
* There is a PHY at this address. If we were given an
* `offset' locator, skip this PHY if it doesn't match.
*/
if (offloc != MII_OFFSET_ANY && offloc != offset)
goto skip;
/*
* Extract the IDs. Braindead PHYs will be handled by
* the `ukphy' driver, as we have no ID information to
* match on.
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
*/
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
ma.mii_id1 = MIIBUS_READREG(dev, ma.mii_phyno, MII_PHYIDR1);
ma.mii_id2 = MIIBUS_READREG(dev, ma.mii_phyno, MII_PHYIDR2);
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
ma.mii_offset = offset;
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
args = malloc(sizeof(struct mii_attach_args), M_DEVBUF,
M_NOWAIT);
if (args == NULL)
goto skip;
bcopy((char *)&ma, (char *)args, sizeof(ma));
phy = device_add_child(*miibus, NULL, -1);
if (phy == NULL) {
free(args, M_DEVBUF);
goto skip;
}
device_set_ivars(phy, args);
skip:
offset++;
}
if (first != 0) {
if (phy == NULL) {
rv = ENXIO;
goto fail;
}
rv = bus_generic_attach(dev);
if (rv != 0)
goto fail;
Return from mii_attach() after calling bus_generic_attach(9) on the device_t of the MAC driver in order to attach miibus(4) on the first pass instead of falling through to also calling it on the device_t of miibus(4). The latter code flow was intended to attach the PHY drivers the same way regardless of whether it's the first or a repeated pass, modulo the bus_generic_attach() call in miibus_attach() which shouldn't be there. However, it turned out that these variants cause miibus(4) to be attached twice under certain conditions when using MAC drivers as modules. Submitted by: yongari MFC after: 3 days
2010-11-15 21:41:45 +00:00
/* Attaching of the PHY drivers is done in miibus_attach(). */
return (0);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
}
rv = bus_generic_attach(*miibus);
if (rv != 0)
goto fail;
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
Try to adhere to style(9) and be consistent within this file.
2010-10-02 17:20:30 +00:00
return (0);
Add a NetBSD-compatible mii_attach(), which is intended to eventually replace mii_phy_probe() altogether. Compared to the latter the advantages of mii_attach() are: - intended to be called multiple times in order to attach PHYs in multiple passes (f.e. in order to only use sub-ranges of the 0 to MII_NPHY - 1 range) - being able to pass along the capability mask from the NIC to the PHY drivers - being able to specify at which address (phyloc) to probe for a PHY (instead of always probing at all addresses from 0 to MII_NPHY - 1) - being able to specify which PHY instance (offloc) to attach - being able to pass along MIIF_* flags from the NIC to the PHY drivers (f.e. as required to indicated to the PHY drivers that flow control is supported by the NIC driver, which actually is the motivation for this change). While at it, I used the opportunity to get rid of some hacks in mii(4) like miibus_probe() generally doing work besides sheer probing and the "EVIL HACK" (which will vanish entirely along with mii_phy_probe()) by passing the struct ifnet pointer via an argument of mii_attach() as well as to fix some resource leaks in mii(4) in case something fails. Commits which will update the PHY drivers to honor the MII flags passed down from the NIC drivers and take advantage of mii_attach() to get rid of certain types of hacks in NIC and PHY drivers as well as a conversion of the remaining uses of mii_phy_probe() will follow shortly. Reviewed by: jhb, yongari Obtained from: NetBSD (partially)
2010-10-14 22:01:40 +00:00
fail:
if (*miibus != NULL)
device_delete_child(dev, *miibus);
free(ivars, M_DEVBUF);
if (first != 0)
*miibus = NULL;
return (rv);
}
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
/*
* Media changed; notify all PHYs.
*/
int
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
mii_mediachg(struct mii_data *mii)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
struct mii_softc *child;
- In the spirit of previous simplifications factor out the checks for a different PHY instance being selected and isolation out into the wrappers around the service methods rather than duplicating them over and over again (besides, a PHY driver shouldn't need to care about which instance it actually is). - Centralize the check for the need to isolate a non-zero PHY instance not supporting isolation in mii_mediachg() and just ignore it rather than panicing, which should sufficient given that a) things are likely to just work anyway if one doesn't plug in more than one port at a time and b) refusing to attach in this case just leaves us in a unknown but most likely also not exactly correct configuration (besides several drivers setting MIIF_NOISOLATE didn't care about these anyway, probably due to setting this flag for no real reason). - Minor fixes like removing unnecessary setting of sc->mii_anegticks, using sc->mii_anegticks instead of hardcoded values etc.
2010-10-02 18:53:12 +00:00
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
int rv;
mii->mii_media_status = 0;
mii->mii_media_active = IFM_NONE;
Another round of the <sys/queue.h> FOREACH transmogriffer. Created with: sed(1) Reviewed by: md5(1)
2001-02-04 16:08:18 +00:00
LIST_FOREACH(child, &mii->mii_phys, mii_list) {
- In the spirit of previous simplifications factor out the checks for a different PHY instance being selected and isolation out into the wrappers around the service methods rather than duplicating them over and over again (besides, a PHY driver shouldn't need to care about which instance it actually is). - Centralize the check for the need to isolate a non-zero PHY instance not supporting isolation in mii_mediachg() and just ignore it rather than panicing, which should sufficient given that a) things are likely to just work anyway if one doesn't plug in more than one port at a time and b) refusing to attach in this case just leaves us in a unknown but most likely also not exactly correct configuration (besides several drivers setting MIIF_NOISOLATE didn't care about these anyway, probably due to setting this flag for no real reason). - Minor fixes like removing unnecessary setting of sc->mii_anegticks, using sc->mii_anegticks instead of hardcoded values etc.
2010-10-02 18:53:12 +00:00
/*
* If the media indicates a different PHY instance,
* isolate this one.
*/
if (IFM_INST(ife->ifm_media) != child->mii_inst) {
if ((child->mii_flags & MIIF_NOISOLATE) != 0) {
device_printf(child->mii_dev, "%s: "
"can't handle non-zero PHY instance %d\n",
__func__, child->mii_inst);
continue;
}
PHY_WRITE(child, MII_BMCR, PHY_READ(child, MII_BMCR) |
BMCR_ISO);
continue;
}
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
rv = PHY_SERVICE(child, mii, MII_MEDIACHG);
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
if (rv)
return (rv);
}
return (0);
}
/*
* Call the PHY tick routines, used during autonegotiation.
*/
void
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
mii_tick(struct mii_data *mii)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
struct mii_softc *child;
- In the spirit of previous simplifications factor out the checks for a different PHY instance being selected and isolation out into the wrappers around the service methods rather than duplicating them over and over again (besides, a PHY driver shouldn't need to care about which instance it actually is). - Centralize the check for the need to isolate a non-zero PHY instance not supporting isolation in mii_mediachg() and just ignore it rather than panicing, which should sufficient given that a) things are likely to just work anyway if one doesn't plug in more than one port at a time and b) refusing to attach in this case just leaves us in a unknown but most likely also not exactly correct configuration (besides several drivers setting MIIF_NOISOLATE didn't care about these anyway, probably due to setting this flag for no real reason). - Minor fixes like removing unnecessary setting of sc->mii_anegticks, using sc->mii_anegticks instead of hardcoded values etc.
2010-10-02 18:53:12 +00:00
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
- In the spirit of previous simplifications factor out the checks for a different PHY instance being selected and isolation out into the wrappers around the service methods rather than duplicating them over and over again (besides, a PHY driver shouldn't need to care about which instance it actually is). - Centralize the check for the need to isolate a non-zero PHY instance not supporting isolation in mii_mediachg() and just ignore it rather than panicing, which should sufficient given that a) things are likely to just work anyway if one doesn't plug in more than one port at a time and b) refusing to attach in this case just leaves us in a unknown but most likely also not exactly correct configuration (besides several drivers setting MIIF_NOISOLATE didn't care about these anyway, probably due to setting this flag for no real reason). - Minor fixes like removing unnecessary setting of sc->mii_anegticks, using sc->mii_anegticks instead of hardcoded values etc.
2010-10-02 18:53:12 +00:00
LIST_FOREACH(child, &mii->mii_phys, mii_list) {
/*
* If this PHY instance isn't currently selected, just skip
* it.
*/
if (IFM_INST(ife->ifm_media) != child->mii_inst)
continue;
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
(void)PHY_SERVICE(child, mii, MII_TICK);
- In the spirit of previous simplifications factor out the checks for a different PHY instance being selected and isolation out into the wrappers around the service methods rather than duplicating them over and over again (besides, a PHY driver shouldn't need to care about which instance it actually is). - Centralize the check for the need to isolate a non-zero PHY instance not supporting isolation in mii_mediachg() and just ignore it rather than panicing, which should sufficient given that a) things are likely to just work anyway if one doesn't plug in more than one port at a time and b) refusing to attach in this case just leaves us in a unknown but most likely also not exactly correct configuration (besides several drivers setting MIIF_NOISOLATE didn't care about these anyway, probably due to setting this flag for no real reason). - Minor fixes like removing unnecessary setting of sc->mii_anegticks, using sc->mii_anegticks instead of hardcoded values etc.
2010-10-02 18:53:12 +00:00
}
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
/*
* Get media status from PHYs.
*/
void
Use ANSI function definitions, in preference to the K&R definitions.
2005-02-15 06:02:34 +00:00
mii_pollstat(struct mii_data *mii)
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
{
struct mii_softc *child;
- In the spirit of previous simplifications factor out the checks for a different PHY instance being selected and isolation out into the wrappers around the service methods rather than duplicating them over and over again (besides, a PHY driver shouldn't need to care about which instance it actually is). - Centralize the check for the need to isolate a non-zero PHY instance not supporting isolation in mii_mediachg() and just ignore it rather than panicing, which should sufficient given that a) things are likely to just work anyway if one doesn't plug in more than one port at a time and b) refusing to attach in this case just leaves us in a unknown but most likely also not exactly correct configuration (besides several drivers setting MIIF_NOISOLATE didn't care about these anyway, probably due to setting this flag for no real reason). - Minor fixes like removing unnecessary setting of sc->mii_anegticks, using sc->mii_anegticks instead of hardcoded values etc.
2010-10-02 18:53:12 +00:00
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
mii->mii_media_status = 0;
mii->mii_media_active = IFM_NONE;
- In the spirit of previous simplifications factor out the checks for a different PHY instance being selected and isolation out into the wrappers around the service methods rather than duplicating them over and over again (besides, a PHY driver shouldn't need to care about which instance it actually is). - Centralize the check for the need to isolate a non-zero PHY instance not supporting isolation in mii_mediachg() and just ignore it rather than panicing, which should sufficient given that a) things are likely to just work anyway if one doesn't plug in more than one port at a time and b) refusing to attach in this case just leaves us in a unknown but most likely also not exactly correct configuration (besides several drivers setting MIIF_NOISOLATE didn't care about these anyway, probably due to setting this flag for no real reason). - Minor fixes like removing unnecessary setting of sc->mii_anegticks, using sc->mii_anegticks instead of hardcoded values etc.
2010-10-02 18:53:12 +00:00
LIST_FOREACH(child, &mii->mii_phys, mii_list) {
/*
* If we're not polling this PHY instance, just skip it.
*/
if (IFM_INST(ife->ifm_media) != child->mii_inst)
continue;
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
(void)PHY_SERVICE(child, mii, MII_POLLSTAT);
- In the spirit of previous simplifications factor out the checks for a different PHY instance being selected and isolation out into the wrappers around the service methods rather than duplicating them over and over again (besides, a PHY driver shouldn't need to care about which instance it actually is). - Centralize the check for the need to isolate a non-zero PHY instance not supporting isolation in mii_mediachg() and just ignore it rather than panicing, which should sufficient given that a) things are likely to just work anyway if one doesn't plug in more than one port at a time and b) refusing to attach in this case just leaves us in a unknown but most likely also not exactly correct configuration (besides several drivers setting MIIF_NOISOLATE didn't care about these anyway, probably due to setting this flag for no real reason). - Minor fixes like removing unnecessary setting of sc->mii_anegticks, using sc->mii_anegticks instead of hardcoded values etc.
2010-10-02 18:53:12 +00:00
}
This commit adds support for the NetBSD MII abstraction layer and MII-compliant PHY drivers. Many 10/100 ethernet NICs available today either use an MII transceiver or have built-in transceivers that can be programmed using an MII interface. It makes sense then to separate this support out into common code instead of duplicating it in all of the NIC drivers. The mii code also handles all of the media detection, selection and reporting via the ifmedia interface. This is basically the same code from NetBSD's /sys/dev/mii, except it's been adapted to FreeBSD's bus architecture. The advantage to this is that it automatically allows everything to be turned into a loadable module. There are some common functions for use in drivers once an miibus has been attached (mii_mediachg(), mii_pollstat(), mii_tick()) as well as individual PHY drivers. There is also a generic driver for all PHYs that aren't handled by a specific driver. It's possible to do this because all 10/100 PHYs implement the same general register set in addition to their vendor-specific register sets, so for the most part you can use one driver for pretty much any PHY. There are a couple of oddball exceptions though, hence the need to have specific drivers. There are two layers: the generic "miibus" layer and the PHY driver layer. The drivers are child devices of "miibus" and the "miibus" is a child of a given NIC driver. The "miibus" code and the PHY drivers can actually be compiled and kldoaded as completely separate modules or compiled together into one module. For the moment I'm using the latter approach since the code is relatively small. Currently there are only three PHY drivers here: the generic driver, the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding others later as I convert various NIC drivers to use this code. I realize that I'm cvs adding this stuff instead of importing it onto a separate vendor branch, but in my opinion the import approach doesn't really offer any significant advantage: I'm going to be maintaining this stuff and writing my own PHY drivers one way or the other.
1999-08-21 17:40:53 +00:00
}
Make one generic mii_phy_detach() to replace 19 slightly different ones. Rename mii_phy_auto_stop() mii_phy_down(). Introduce mii_down(), use it from nge. Do not indirect it to 19 identical case's in 19 switchstatements like NetBSD did.
2002-04-29 13:07:38 +00:00
/*
* Inform the PHYs that the interface is down.
*/
void
mii_down(struct mii_data *mii)
{
struct mii_softc *child;
LIST_FOREACH(child, &mii->mii_phys, mii_list)
mii_phy_down(child);
}
- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP (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@
2011-05-03 19:51:29 +00:00
static unsigned char
mii_bitreverse(unsigned char x)
{
static unsigned char nibbletab[16] = {
0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15
};
return ((nibbletab[x & 15] << 4) | nibbletab[x >> 4]);
}
u_int
mii_oui(u_int id1, u_int id2)
{
u_int h;
h = (id1 << 6) | (id2 >> 10);
return ((mii_bitreverse(h >> 16) << 16) |
(mii_bitreverse((h >> 8) & 0xff) << 8) |
mii_bitreverse(h & 0xff));
}
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