| /* de4x5.c: A DIGITAL DC21x4x DECchip and DE425/DE434/DE435/DE450/DE500 |
| ethernet driver for Linux. |
| |
| Copyright 1994, 1995 Digital Equipment Corporation. |
| |
| Testing resources for this driver have been made available |
| in part by NASA Ames Research Center (mjacob@nas.nasa.gov). |
| |
| The author may be reached at davies@maniac.ultranet.com. |
| |
| This program is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by the |
| Free Software Foundation; either version 2 of the License, or (at your |
| option) any later version. |
| |
| THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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. |
| |
| You should have received a copy of the GNU General Public License along |
| with this program; if not, write to the Free Software Foundation, Inc., |
| 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| Originally, this driver was written for the Digital Equipment |
| Corporation series of EtherWORKS ethernet cards: |
| |
| DE425 TP/COAX EISA |
| DE434 TP PCI |
| DE435 TP/COAX/AUI PCI |
| DE450 TP/COAX/AUI PCI |
| DE500 10/100 PCI Fasternet |
| |
| but it will now attempt to support all cards which conform to the |
| Digital Semiconductor SROM Specification. The driver currently |
| recognises the following chips: |
| |
| DC21040 (no SROM) |
| DC21041[A] |
| DC21140[A] |
| DC21142 |
| DC21143 |
| |
| So far the driver is known to work with the following cards: |
| |
| KINGSTON |
| Linksys |
| ZNYX342 |
| SMC8432 |
| SMC9332 (w/new SROM) |
| ZNYX31[45] |
| ZNYX346 10/100 4 port (can act as a 10/100 bridge!) |
| |
| The driver has been tested on a relatively busy network using the DE425, |
| DE434, DE435 and DE500 cards and benchmarked with 'ttcp': it transferred |
| 16M of data to a DECstation 5000/200 as follows: |
| |
| TCP UDP |
| TX RX TX RX |
| DE425 1030k 997k 1170k 1128k |
| DE434 1063k 995k 1170k 1125k |
| DE435 1063k 995k 1170k 1125k |
| DE500 1063k 998k 1170k 1125k in 10Mb/s mode |
| |
| All values are typical (in kBytes/sec) from a sample of 4 for each |
| measurement. Their error is +/-20k on a quiet (private) network and also |
| depend on what load the CPU has. |
| |
| ========================================================================= |
| This driver has been written substantially from scratch, although its |
| inheritance of style and stack interface from 'ewrk3.c' and in turn from |
| Donald Becker's 'lance.c' should be obvious. With the module autoload of |
| every usable DECchip board, I pinched Donald's 'next_module' field to |
| link my modules together. |
| |
| Upto 15 EISA cards can be supported under this driver, limited primarily |
| by the available IRQ lines. I have checked different configurations of |
| multiple depca, EtherWORKS 3 cards and de4x5 cards and have not found a |
| problem yet (provided you have at least depca.c v0.38) ... |
| |
| PCI support has been added to allow the driver to work with the DE434, |
| DE435, DE450 and DE500 cards. The I/O accesses are a bit of a kludge due |
| to the differences in the EISA and PCI CSR address offsets from the base |
| address. |
| |
| The ability to load this driver as a loadable module has been included |
| and used extensively during the driver development (to save those long |
| reboot sequences). Loadable module support under PCI and EISA has been |
| achieved by letting the driver autoprobe as if it were compiled into the |
| kernel. Do make sure you're not sharing interrupts with anything that |
| cannot accommodate interrupt sharing! |
| |
| To utilise this ability, you have to do 8 things: |
| |
| 0) have a copy of the loadable modules code installed on your system. |
| 1) copy de4x5.c from the /linux/drivers/net directory to your favourite |
| temporary directory. |
| 2) for fixed autoprobes (not recommended), edit the source code near |
| line 5594 to reflect the I/O address you're using, or assign these when |
| loading by: |
| |
| insmod de4x5 io=0xghh where g = bus number |
| hh = device number |
| |
| NB: autoprobing for modules is now supported by default. You may just |
| use: |
| |
| insmod de4x5 |
| |
| to load all available boards. For a specific board, still use |
| the 'io=?' above. |
| 3) compile de4x5.c, but include -DMODULE in the command line to ensure |
| that the correct bits are compiled (see end of source code). |
| 4) if you are wanting to add a new card, goto 5. Otherwise, recompile a |
| kernel with the de4x5 configuration turned off and reboot. |
| 5) insmod de4x5 [io=0xghh] |
| 6) run the net startup bits for your new eth?? interface(s) manually |
| (usually /etc/rc.inet[12] at boot time). |
| 7) enjoy! |
| |
| To unload a module, turn off the associated interface(s) |
| 'ifconfig eth?? down' then 'rmmod de4x5'. |
| |
| Automedia detection is included so that in principal you can disconnect |
| from, e.g. TP, reconnect to BNC and things will still work (after a |
| pause whilst the driver figures out where its media went). My tests |
| using ping showed that it appears to work.... |
| |
| By default, the driver will now autodetect any DECchip based card. |
| Should you have a need to restrict the driver to DIGITAL only cards, you |
| can compile with a DEC_ONLY define, or if loading as a module, use the |
| 'dec_only=1' parameter. |
| |
| I've changed the timing routines to use the kernel timer and scheduling |
| functions so that the hangs and other assorted problems that occurred |
| while autosensing the media should be gone. A bonus for the DC21040 |
| auto media sense algorithm is that it can now use one that is more in |
| line with the rest (the DC21040 chip doesn't have a hardware timer). |
| The downside is the 1 'jiffies' (10ms) resolution. |
| |
| IEEE 802.3u MII interface code has been added in anticipation that some |
| products may use it in the future. |
| |
| The SMC9332 card has a non-compliant SROM which needs fixing - I have |
| patched this driver to detect it because the SROM format used complies |
| to a previous DEC-STD format. |
| |
| I have removed the buffer copies needed for receive on Intels. I cannot |
| remove them for Alphas since the Tulip hardware only does longword |
| aligned DMA transfers and the Alphas get alignment traps with non |
| longword aligned data copies (which makes them really slow). No comment. |
| |
| I have added SROM decoding routines to make this driver work with any |
| card that supports the Digital Semiconductor SROM spec. This will help |
| all cards running the dc2114x series chips in particular. Cards using |
| the dc2104x chips should run correctly with the basic driver. I'm in |
| debt to <mjacob@feral.com> for the testing and feedback that helped get |
| this feature working. So far we have tested KINGSTON, SMC8432, SMC9332 |
| (with the latest SROM complying with the SROM spec V3: their first was |
| broken), ZNYX342 and LinkSys. ZYNX314 (dual 21041 MAC) and ZNYX 315 |
| (quad 21041 MAC) cards also appear to work despite their incorrectly |
| wired IRQs. |
| |
| I have added a temporary fix for interrupt problems when some SCSI cards |
| share the same interrupt as the DECchip based cards. The problem occurs |
| because the SCSI card wants to grab the interrupt as a fast interrupt |
| (runs the service routine with interrupts turned off) vs. this card |
| which really needs to run the service routine with interrupts turned on. |
| This driver will now add the interrupt service routine as a fast |
| interrupt if it is bounced from the slow interrupt. THIS IS NOT A |
| RECOMMENDED WAY TO RUN THE DRIVER and has been done for a limited time |
| until people sort out their compatibility issues and the kernel |
| interrupt service code is fixed. YOU SHOULD SEPARATE OUT THE FAST |
| INTERRUPT CARDS FROM THE SLOW INTERRUPT CARDS to ensure that they do not |
| run on the same interrupt. PCMCIA/CardBus is another can of worms... |
| |
| Finally, I think I have really fixed the module loading problem with |
| more than one DECchip based card. As a side effect, I don't mess with |
| the device structure any more which means that if more than 1 card in |
| 2.0.x is installed (4 in 2.1.x), the user will have to edit |
| linux/drivers/net/Space.c to make room for them. Hence, module loading |
| is the preferred way to use this driver, since it doesn't have this |
| limitation. |
| |
| Where SROM media detection is used and full duplex is specified in the |
| SROM, the feature is ignored unless lp->params.fdx is set at compile |
| time OR during a module load (insmod de4x5 args='eth??:fdx' [see |
| below]). This is because there is no way to automatically detect full |
| duplex links except through autonegotiation. When I include the |
| autonegotiation feature in the SROM autoconf code, this detection will |
| occur automatically for that case. |
| |
| Command line arguments are now allowed, similar to passing arguments |
| through LILO. This will allow a per adapter board set up of full duplex |
| and media. The only lexical constraints are: the board name (dev->name) |
| appears in the list before its parameters. The list of parameters ends |
| either at the end of the parameter list or with another board name. The |
| following parameters are allowed: |
| |
| fdx for full duplex |
| autosense to set the media/speed; with the following |
| sub-parameters: |
| TP, TP_NW, BNC, AUI, BNC_AUI, 100Mb, 10Mb, AUTO |
| |
| Case sensitivity is important for the sub-parameters. They *must* be |
| upper case. Examples: |
| |
| insmod de4x5 args='eth1:fdx autosense=BNC eth0:autosense=100Mb'. |
| |
| For a compiled in driver, at or above line 548, place e.g. |
| #define DE4X5_PARM "eth0:fdx autosense=AUI eth2:autosense=TP" |
| |
| Yes, I know full duplex isn't permissible on BNC or AUI; they're just |
| examples. By default, full duplex is turned off and AUTO is the default |
| autosense setting. In reality, I expect only the full duplex option to |
| be used. Note the use of single quotes in the two examples above and the |
| lack of commas to separate items. ALSO, you must get the requested media |
| correct in relation to what the adapter SROM says it has. There's no way |
| to determine this in advance other than by trial and error and common |
| sense, e.g. call a BNC connectored port 'BNC', not '10Mb'. |
| |
| Changed the bus probing. EISA used to be done first, followed by PCI. |
| Most people probably don't even know what a de425 is today and the EISA |
| probe has messed up some SCSI cards in the past, so now PCI is always |
| probed first followed by EISA if a) the architecture allows EISA and |
| either b) there have been no PCI cards detected or c) an EISA probe is |
| forced by the user. To force a probe include "force_eisa" in your |
| insmod "args" line; for built-in kernels either change the driver to do |
| this automatically or include #define DE4X5_FORCE_EISA on or before |
| line 1040 in the driver. |
| |
| TO DO: |
| ------ |
| |
| Revision History |
| ---------------- |
| |
| Version Date Description |
| |
| 0.1 17-Nov-94 Initial writing. ALPHA code release. |
| 0.2 13-Jan-95 Added PCI support for DE435's. |
| 0.21 19-Jan-95 Added auto media detection. |
| 0.22 10-Feb-95 Fix interrupt handler call <chris@cosy.sbg.ac.at>. |
| Fix recognition bug reported by <bkm@star.rl.ac.uk>. |
| Add request/release_region code. |
| Add loadable modules support for PCI. |
| Clean up loadable modules support. |
| 0.23 28-Feb-95 Added DC21041 and DC21140 support. |
| Fix missed frame counter value and initialisation. |
| Fixed EISA probe. |
| 0.24 11-Apr-95 Change delay routine to use <linux/udelay>. |
| Change TX_BUFFS_AVAIL macro. |
| Change media autodetection to allow manual setting. |
| Completed DE500 (DC21140) support. |
| 0.241 18-Apr-95 Interim release without DE500 Autosense Algorithm. |
| 0.242 10-May-95 Minor changes. |
| 0.30 12-Jun-95 Timer fix for DC21140. |
| Portability changes. |
| Add ALPHA changes from <jestabro@ant.tay1.dec.com>. |
| Add DE500 semi automatic autosense. |
| Add Link Fail interrupt TP failure detection. |
| Add timer based link change detection. |
| Plugged a memory leak in de4x5_queue_pkt(). |
| 0.31 13-Jun-95 Fixed PCI stuff for 1.3.1. |
| 0.32 26-Jun-95 Added verify_area() calls in de4x5_ioctl() from a |
| suggestion by <heiko@colossus.escape.de>. |
| 0.33 8-Aug-95 Add shared interrupt support (not released yet). |
| 0.331 21-Aug-95 Fix de4x5_open() with fast CPUs. |
| Fix de4x5_interrupt(). |
| Fix dc21140_autoconf() mess. |
| No shared interrupt support. |
| 0.332 11-Sep-95 Added MII management interface routines. |
| 0.40 5-Mar-96 Fix setup frame timeout <maartenb@hpkuipc.cern.ch>. |
| Add kernel timer code (h/w is too flaky). |
| Add MII based PHY autosense. |
| Add new multicasting code. |
| Add new autosense algorithms for media/mode |
| selection using kernel scheduling/timing. |
| Re-formatted. |
| Made changes suggested by <jeff@router.patch.net>: |
| Change driver to detect all DECchip based cards |
| with DEC_ONLY restriction a special case. |
| Changed driver to autoprobe as a module. No irq |
| checking is done now - assume BIOS is good! |
| Added SMC9332 detection <manabe@Roy.dsl.tutics.ac.jp> |
| 0.41 21-Mar-96 Don't check for get_hw_addr checksum unless DEC card |
| only <niles@axp745gsfc.nasa.gov> |
| Fix for multiple PCI cards reported by <jos@xos.nl> |
| Duh, put the IRQF_SHARED flag into request_interrupt(). |
| Fix SMC ethernet address in enet_det[]. |
| Print chip name instead of "UNKNOWN" during boot. |
| 0.42 26-Apr-96 Fix MII write TA bit error. |
| Fix bug in dc21040 and dc21041 autosense code. |
| Remove buffer copies on receive for Intels. |
| Change sk_buff handling during media disconnects to |
| eliminate DUP packets. |
| Add dynamic TX thresholding. |
| Change all chips to use perfect multicast filtering. |
| Fix alloc_device() bug <jari@markkus2.fimr.fi> |
| 0.43 21-Jun-96 Fix unconnected media TX retry bug. |
| Add Accton to the list of broken cards. |
| Fix TX under-run bug for non DC21140 chips. |
| Fix boot command probe bug in alloc_device() as |
| reported by <koen.gadeyne@barco.com> and |
| <orava@nether.tky.hut.fi>. |
| Add cache locks to prevent a race condition as |
| reported by <csd@microplex.com> and |
| <baba@beckman.uiuc.edu>. |
| Upgraded alloc_device() code. |
| 0.431 28-Jun-96 Fix potential bug in queue_pkt() from discussion |
| with <csd@microplex.com> |
| 0.44 13-Aug-96 Fix RX overflow bug in 2114[023] chips. |
| Fix EISA probe bugs reported by <os2@kpi.kharkov.ua> |
| and <michael@compurex.com>. |
| 0.441 9-Sep-96 Change dc21041_autoconf() to probe quiet BNC media |
| with a loopback packet. |
| 0.442 9-Sep-96 Include AUI in dc21041 media printout. Bug reported |
| by <bhat@mundook.cs.mu.OZ.AU> |
| 0.45 8-Dec-96 Include endian functions for PPC use, from work |
| by <cort@cs.nmt.edu> and <g.thomas@opengroup.org>. |
| 0.451 28-Dec-96 Added fix to allow autoprobe for modules after |
| suggestion from <mjacob@feral.com>. |
| 0.5 30-Jan-97 Added SROM decoding functions. |
| Updated debug flags. |
| Fix sleep/wakeup calls for PCI cards, bug reported |
| by <cross@gweep.lkg.dec.com>. |
| Added multi-MAC, one SROM feature from discussion |
| with <mjacob@feral.com>. |
| Added full module autoprobe capability. |
| Added attempt to use an SMC9332 with broken SROM. |
| Added fix for ZYNX multi-mac cards that didn't |
| get their IRQs wired correctly. |
| 0.51 13-Feb-97 Added endian fixes for the SROM accesses from |
| <paubert@iram.es> |
| Fix init_connection() to remove extra device reset. |
| Fix MAC/PHY reset ordering in dc21140m_autoconf(). |
| Fix initialisation problem with lp->timeout in |
| typeX_infoblock() from <paubert@iram.es>. |
| Fix MII PHY reset problem from work done by |
| <paubert@iram.es>. |
| 0.52 26-Apr-97 Some changes may not credit the right people - |
| a disk crash meant I lost some mail. |
| Change RX interrupt routine to drop rather than |
| defer packets to avoid hang reported by |
| <g.thomas@opengroup.org>. |
| Fix srom_exec() to return for COMPACT and type 1 |
| infoblocks. |
| Added DC21142 and DC21143 functions. |
| Added byte counters from <phil@tazenda.demon.co.uk> |
| Added IRQF_DISABLED temporary fix from |
| <mjacob@feral.com>. |
| 0.53 12-Nov-97 Fix the *_probe() to include 'eth??' name during |
| module load: bug reported by |
| <Piete.Brooks@cl.cam.ac.uk> |
| Fix multi-MAC, one SROM, to work with 2114x chips: |
| bug reported by <cmetz@inner.net>. |
| Make above search independent of BIOS device scan |
| direction. |
| Completed DC2114[23] autosense functions. |
| 0.531 21-Dec-97 Fix DE500-XA 100Mb/s bug reported by |
| <robin@intercore.com |
| Fix type1_infoblock() bug introduced in 0.53, from |
| problem reports by |
| <parmee@postecss.ncrfran.france.ncr.com> and |
| <jo@ice.dillingen.baynet.de>. |
| Added argument list to set up each board from either |
| a module's command line or a compiled in #define. |
| Added generic MII PHY functionality to deal with |
| newer PHY chips. |
| Fix the mess in 2.1.67. |
| 0.532 5-Jan-98 Fix bug in mii_get_phy() reported by |
| <redhat@cococo.net>. |
| Fix bug in pci_probe() for 64 bit systems reported |
| by <belliott@accessone.com>. |
| 0.533 9-Jan-98 Fix more 64 bit bugs reported by <jal@cs.brown.edu>. |
| 0.534 24-Jan-98 Fix last (?) endian bug from <geert@linux-m68k.org> |
| 0.535 21-Feb-98 Fix Ethernet Address PROM reset bug for DC21040. |
| 0.536 21-Mar-98 Change pci_probe() to use the pci_dev structure. |
| **Incompatible with 2.0.x from here.** |
| 0.540 5-Jul-98 Atomicize assertion of dev->interrupt for SMP |
| from <lma@varesearch.com> |
| Add TP, AUI and BNC cases to 21140m_autoconf() for |
| case where a 21140 under SROM control uses, e.g. AUI |
| from problem report by <delchini@lpnp09.in2p3.fr> |
| Add MII parallel detection to 2114x_autoconf() for |
| case where no autonegotiation partner exists from |
| problem report by <mlapsley@ndirect.co.uk>. |
| Add ability to force connection type directly even |
| when using SROM control from problem report by |
| <earl@exis.net>. |
| Updated the PCI interface to conform with the latest |
| version. I hope nothing is broken... |
| Add TX done interrupt modification from suggestion |
| by <Austin.Donnelly@cl.cam.ac.uk>. |
| Fix is_anc_capable() bug reported by |
| <Austin.Donnelly@cl.cam.ac.uk>. |
| Fix type[13]_infoblock() bug: during MII search, PHY |
| lp->rst not run because lp->ibn not initialised - |
| from report & fix by <paubert@iram.es>. |
| Fix probe bug with EISA & PCI cards present from |
| report by <eirik@netcom.com>. |
| 0.541 24-Aug-98 Fix compiler problems associated with i386-string |
| ops from multiple bug reports and temporary fix |
| from <paubert@iram.es>. |
| Fix pci_probe() to correctly emulate the old |
| pcibios_find_class() function. |
| Add an_exception() for old ZYNX346 and fix compile |
| warning on PPC & SPARC, from <ecd@skynet.be>. |
| Fix lastPCI to correctly work with compiled in |
| kernels and modules from bug report by |
| <Zlatko.Calusic@CARNet.hr> et al. |
| 0.542 15-Sep-98 Fix dc2114x_autoconf() to stop multiple messages |
| when media is unconnected. |
| Change dev->interrupt to lp->interrupt to ensure |
| alignment for Alpha's and avoid their unaligned |
| access traps. This flag is merely for log messages: |
| should do something more definitive though... |
| 0.543 30-Dec-98 Add SMP spin locking. |
| 0.544 8-May-99 Fix for buggy SROM in Motorola embedded boards using |
| a 21143 by <mmporter@home.com>. |
| Change PCI/EISA bus probing order. |
| 0.545 28-Nov-99 Further Moto SROM bug fix from |
| <mporter@eng.mcd.mot.com> |
| Remove double checking for DEBUG_RX in de4x5_dbg_rx() |
| from report by <geert@linux-m68k.org> |
| 0.546 22-Feb-01 Fixes Alpha XP1000 oops. The srom_search function |
| was causing a page fault when initializing the |
| variable 'pb', on a non de4x5 PCI device, in this |
| case a PCI bridge (DEC chip 21152). The value of |
| 'pb' is now only initialized if a de4x5 chip is |
| present. |
| <france@handhelds.org> |
| 0.547 08-Nov-01 Use library crc32 functions by <Matt_Domsch@dell.com> |
| 0.548 30-Aug-03 Big 2.6 cleanup. Ported to PCI/EISA probing and |
| generic DMA APIs. Fixed DE425 support on Alpha. |
| <maz@wild-wind.fr.eu.org> |
| ========================================================================= |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/string.h> |
| #include <linux/interrupt.h> |
| #include <linux/ptrace.h> |
| #include <linux/errno.h> |
| #include <linux/ioport.h> |
| #include <linux/pci.h> |
| #include <linux/eisa.h> |
| #include <linux/delay.h> |
| #include <linux/init.h> |
| #include <linux/spinlock.h> |
| #include <linux/crc32.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/skbuff.h> |
| #include <linux/time.h> |
| #include <linux/types.h> |
| #include <linux/unistd.h> |
| #include <linux/ctype.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/moduleparam.h> |
| #include <linux/bitops.h> |
| #include <linux/gfp.h> |
| |
| #include <asm/io.h> |
| #include <asm/dma.h> |
| #include <asm/byteorder.h> |
| #include <asm/unaligned.h> |
| #include <asm/uaccess.h> |
| #ifdef CONFIG_PPC_PMAC |
| #include <asm/machdep.h> |
| #endif /* CONFIG_PPC_PMAC */ |
| |
| #include "de4x5.h" |
| |
| static const char version[] __devinitconst = |
| KERN_INFO "de4x5.c:V0.546 2001/02/22 davies@maniac.ultranet.com\n"; |
| |
| #define c_char const char |
| |
| /* |
| ** MII Information |
| */ |
| struct phy_table { |
| int reset; /* Hard reset required? */ |
| int id; /* IEEE OUI */ |
| int ta; /* One cycle TA time - 802.3u is confusing here */ |
| struct { /* Non autonegotiation (parallel) speed det. */ |
| int reg; |
| int mask; |
| int value; |
| } spd; |
| }; |
| |
| struct mii_phy { |
| int reset; /* Hard reset required? */ |
| int id; /* IEEE OUI */ |
| int ta; /* One cycle TA time */ |
| struct { /* Non autonegotiation (parallel) speed det. */ |
| int reg; |
| int mask; |
| int value; |
| } spd; |
| int addr; /* MII address for the PHY */ |
| u_char *gep; /* Start of GEP sequence block in SROM */ |
| u_char *rst; /* Start of reset sequence in SROM */ |
| u_int mc; /* Media Capabilities */ |
| u_int ana; /* NWay Advertisement */ |
| u_int fdx; /* Full DupleX capabilities for each media */ |
| u_int ttm; /* Transmit Threshold Mode for each media */ |
| u_int mci; /* 21142 MII Connector Interrupt info */ |
| }; |
| |
| #define DE4X5_MAX_PHY 8 /* Allow upto 8 attached PHY devices per board */ |
| |
| struct sia_phy { |
| u_char mc; /* Media Code */ |
| u_char ext; /* csr13-15 valid when set */ |
| int csr13; /* SIA Connectivity Register */ |
| int csr14; /* SIA TX/RX Register */ |
| int csr15; /* SIA General Register */ |
| int gepc; /* SIA GEP Control Information */ |
| int gep; /* SIA GEP Data */ |
| }; |
| |
| /* |
| ** Define the know universe of PHY devices that can be |
| ** recognised by this driver. |
| */ |
| static struct phy_table phy_info[] = { |
| {0, NATIONAL_TX, 1, {0x19, 0x40, 0x00}}, /* National TX */ |
| {1, BROADCOM_T4, 1, {0x10, 0x02, 0x02}}, /* Broadcom T4 */ |
| {0, SEEQ_T4 , 1, {0x12, 0x10, 0x10}}, /* SEEQ T4 */ |
| {0, CYPRESS_T4 , 1, {0x05, 0x20, 0x20}}, /* Cypress T4 */ |
| {0, 0x7810 , 1, {0x14, 0x0800, 0x0800}} /* Level One LTX970 */ |
| }; |
| |
| /* |
| ** These GENERIC values assumes that the PHY devices follow 802.3u and |
| ** allow parallel detection to set the link partner ability register. |
| ** Detection of 100Base-TX [H/F Duplex] and 100Base-T4 is supported. |
| */ |
| #define GENERIC_REG 0x05 /* Autoneg. Link Partner Advertisement Reg. */ |
| #define GENERIC_MASK MII_ANLPA_100M /* All 100Mb/s Technologies */ |
| #define GENERIC_VALUE MII_ANLPA_100M /* 100B-TX, 100B-TX FDX, 100B-T4 */ |
| |
| /* |
| ** Define special SROM detection cases |
| */ |
| static c_char enet_det[][ETH_ALEN] = { |
| {0x00, 0x00, 0xc0, 0x00, 0x00, 0x00}, |
| {0x00, 0x00, 0xe8, 0x00, 0x00, 0x00} |
| }; |
| |
| #define SMC 1 |
| #define ACCTON 2 |
| |
| /* |
| ** SROM Repair definitions. If a broken SROM is detected a card may |
| ** use this information to help figure out what to do. This is a |
| ** "stab in the dark" and so far for SMC9332's only. |
| */ |
| static c_char srom_repair_info[][100] = { |
| {0x00,0x1e,0x00,0x00,0x00,0x08, /* SMC9332 */ |
| 0x1f,0x01,0x8f,0x01,0x00,0x01,0x00,0x02, |
| 0x01,0x00,0x00,0x78,0xe0,0x01,0x00,0x50, |
| 0x00,0x18,} |
| }; |
| |
| |
| #ifdef DE4X5_DEBUG |
| static int de4x5_debug = DE4X5_DEBUG; |
| #else |
| /*static int de4x5_debug = (DEBUG_MII | DEBUG_SROM | DEBUG_PCICFG | DEBUG_MEDIA | DEBUG_VERSION);*/ |
| static int de4x5_debug = (DEBUG_MEDIA | DEBUG_VERSION); |
| #endif |
| |
| /* |
| ** Allow per adapter set up. For modules this is simply a command line |
| ** parameter, e.g.: |
| ** insmod de4x5 args='eth1:fdx autosense=BNC eth0:autosense=100Mb'. |
| ** |
| ** For a compiled in driver, place e.g. |
| ** #define DE4X5_PARM "eth0:fdx autosense=AUI eth2:autosense=TP" |
| ** here |
| */ |
| #ifdef DE4X5_PARM |
| static char *args = DE4X5_PARM; |
| #else |
| static char *args; |
| #endif |
| |
| struct parameters { |
| bool fdx; |
| int autosense; |
| }; |
| |
| #define DE4X5_AUTOSENSE_MS 250 /* msec autosense tick (DE500) */ |
| |
| #define DE4X5_NDA 0xffe0 /* No Device (I/O) Address */ |
| |
| /* |
| ** Ethernet PROM defines |
| */ |
| #define PROBE_LENGTH 32 |
| #define ETH_PROM_SIG 0xAA5500FFUL |
| |
| /* |
| ** Ethernet Info |
| */ |
| #define PKT_BUF_SZ 1536 /* Buffer size for each Tx/Rx buffer */ |
| #define IEEE802_3_SZ 1518 /* Packet + CRC */ |
| #define MAX_PKT_SZ 1514 /* Maximum ethernet packet length */ |
| #define MAX_DAT_SZ 1500 /* Maximum ethernet data length */ |
| #define MIN_DAT_SZ 1 /* Minimum ethernet data length */ |
| #define PKT_HDR_LEN 14 /* Addresses and data length info */ |
| #define FAKE_FRAME_LEN (MAX_PKT_SZ + 1) |
| #define QUEUE_PKT_TIMEOUT (3*HZ) /* 3 second timeout */ |
| |
| |
| /* |
| ** EISA bus defines |
| */ |
| #define DE4X5_EISA_IO_PORTS 0x0c00 /* I/O port base address, slot 0 */ |
| #define DE4X5_EISA_TOTAL_SIZE 0x100 /* I/O address extent */ |
| |
| #define EISA_ALLOWED_IRQ_LIST {5, 9, 10, 11} |
| |
| #define DE4X5_SIGNATURE {"DE425","DE434","DE435","DE450","DE500"} |
| #define DE4X5_NAME_LENGTH 8 |
| |
| static c_char *de4x5_signatures[] = DE4X5_SIGNATURE; |
| |
| /* |
| ** Ethernet PROM defines for DC21040 |
| */ |
| #define PROBE_LENGTH 32 |
| #define ETH_PROM_SIG 0xAA5500FFUL |
| |
| /* |
| ** PCI Bus defines |
| */ |
| #define PCI_MAX_BUS_NUM 8 |
| #define DE4X5_PCI_TOTAL_SIZE 0x80 /* I/O address extent */ |
| #define DE4X5_CLASS_CODE 0x00020000 /* Network controller, Ethernet */ |
| |
| /* |
| ** Memory Alignment. Each descriptor is 4 longwords long. To force a |
| ** particular alignment on the TX descriptor, adjust DESC_SKIP_LEN and |
| ** DESC_ALIGN. ALIGN aligns the start address of the private memory area |
| ** and hence the RX descriptor ring's first entry. |
| */ |
| #define DE4X5_ALIGN4 ((u_long)4 - 1) /* 1 longword align */ |
| #define DE4X5_ALIGN8 ((u_long)8 - 1) /* 2 longword align */ |
| #define DE4X5_ALIGN16 ((u_long)16 - 1) /* 4 longword align */ |
| #define DE4X5_ALIGN32 ((u_long)32 - 1) /* 8 longword align */ |
| #define DE4X5_ALIGN64 ((u_long)64 - 1) /* 16 longword align */ |
| #define DE4X5_ALIGN128 ((u_long)128 - 1) /* 32 longword align */ |
| |
| #define DE4X5_ALIGN DE4X5_ALIGN32 /* Keep the DC21040 happy... */ |
| #define DE4X5_CACHE_ALIGN CAL_16LONG |
| #define DESC_SKIP_LEN DSL_0 /* Must agree with DESC_ALIGN */ |
| /*#define DESC_ALIGN u32 dummy[4]; / * Must agree with DESC_SKIP_LEN */ |
| #define DESC_ALIGN |
| |
| #ifndef DEC_ONLY /* See README.de4x5 for using this */ |
| static int dec_only; |
| #else |
| static int dec_only = 1; |
| #endif |
| |
| /* |
| ** DE4X5 IRQ ENABLE/DISABLE |
| */ |
| #define ENABLE_IRQs { \ |
| imr |= lp->irq_en;\ |
| outl(imr, DE4X5_IMR); /* Enable the IRQs */\ |
| } |
| |
| #define DISABLE_IRQs {\ |
| imr = inl(DE4X5_IMR);\ |
| imr &= ~lp->irq_en;\ |
| outl(imr, DE4X5_IMR); /* Disable the IRQs */\ |
| } |
| |
| #define UNMASK_IRQs {\ |
| imr |= lp->irq_mask;\ |
| outl(imr, DE4X5_IMR); /* Unmask the IRQs */\ |
| } |
| |
| #define MASK_IRQs {\ |
| imr = inl(DE4X5_IMR);\ |
| imr &= ~lp->irq_mask;\ |
| outl(imr, DE4X5_IMR); /* Mask the IRQs */\ |
| } |
| |
| /* |
| ** DE4X5 START/STOP |
| */ |
| #define START_DE4X5 {\ |
| omr = inl(DE4X5_OMR);\ |
| omr |= OMR_ST | OMR_SR;\ |
| outl(omr, DE4X5_OMR); /* Enable the TX and/or RX */\ |
| } |
| |
| #define STOP_DE4X5 {\ |
| omr = inl(DE4X5_OMR);\ |
| omr &= ~(OMR_ST|OMR_SR);\ |
| outl(omr, DE4X5_OMR); /* Disable the TX and/or RX */ \ |
| } |
| |
| /* |
| ** DE4X5 SIA RESET |
| */ |
| #define RESET_SIA outl(0, DE4X5_SICR); /* Reset SIA connectivity regs */ |
| |
| /* |
| ** DE500 AUTOSENSE TIMER INTERVAL (MILLISECS) |
| */ |
| #define DE4X5_AUTOSENSE_MS 250 |
| |
| /* |
| ** SROM Structure |
| */ |
| struct de4x5_srom { |
| char sub_vendor_id[2]; |
| char sub_system_id[2]; |
| char reserved[12]; |
| char id_block_crc; |
| char reserved2; |
| char version; |
| char num_controllers; |
| char ieee_addr[6]; |
| char info[100]; |
| short chksum; |
| }; |
| #define SUB_VENDOR_ID 0x500a |
| |
| /* |
| ** DE4X5 Descriptors. Make sure that all the RX buffers are contiguous |
| ** and have sizes of both a power of 2 and a multiple of 4. |
| ** A size of 256 bytes for each buffer could be chosen because over 90% of |
| ** all packets in our network are <256 bytes long and 64 longword alignment |
| ** is possible. 1536 showed better 'ttcp' performance. Take your pick. 32 TX |
| ** descriptors are needed for machines with an ALPHA CPU. |
| */ |
| #define NUM_RX_DESC 8 /* Number of RX descriptors */ |
| #define NUM_TX_DESC 32 /* Number of TX descriptors */ |
| #define RX_BUFF_SZ 1536 /* Power of 2 for kmalloc and */ |
| /* Multiple of 4 for DC21040 */ |
| /* Allows 512 byte alignment */ |
| struct de4x5_desc { |
| volatile __le32 status; |
| __le32 des1; |
| __le32 buf; |
| __le32 next; |
| DESC_ALIGN |
| }; |
| |
| /* |
| ** The DE4X5 private structure |
| */ |
| #define DE4X5_PKT_STAT_SZ 16 |
| #define DE4X5_PKT_BIN_SZ 128 /* Should be >=100 unless you |
| increase DE4X5_PKT_STAT_SZ */ |
| |
| struct pkt_stats { |
| u_int bins[DE4X5_PKT_STAT_SZ]; /* Private stats counters */ |
| u_int unicast; |
| u_int multicast; |
| u_int broadcast; |
| u_int excessive_collisions; |
| u_int tx_underruns; |
| u_int excessive_underruns; |
| u_int rx_runt_frames; |
| u_int rx_collision; |
| u_int rx_dribble; |
| u_int rx_overflow; |
| }; |
| |
| struct de4x5_private { |
| char adapter_name[80]; /* Adapter name */ |
| u_long interrupt; /* Aligned ISR flag */ |
| struct de4x5_desc *rx_ring; /* RX descriptor ring */ |
| struct de4x5_desc *tx_ring; /* TX descriptor ring */ |
| struct sk_buff *tx_skb[NUM_TX_DESC]; /* TX skb for freeing when sent */ |
| struct sk_buff *rx_skb[NUM_RX_DESC]; /* RX skb's */ |
| int rx_new, rx_old; /* RX descriptor ring pointers */ |
| int tx_new, tx_old; /* TX descriptor ring pointers */ |
| char setup_frame[SETUP_FRAME_LEN]; /* Holds MCA and PA info. */ |
| char frame[64]; /* Min sized packet for loopback*/ |
| spinlock_t lock; /* Adapter specific spinlock */ |
| struct net_device_stats stats; /* Public stats */ |
| struct pkt_stats pktStats; /* Private stats counters */ |
| char rxRingSize; |
| char txRingSize; |
| int bus; /* EISA or PCI */ |
| int bus_num; /* PCI Bus number */ |
| int device; /* Device number on PCI bus */ |
| int state; /* Adapter OPENED or CLOSED */ |
| int chipset; /* DC21040, DC21041 or DC21140 */ |
| s32 irq_mask; /* Interrupt Mask (Enable) bits */ |
| s32 irq_en; /* Summary interrupt bits */ |
| int media; /* Media (eg TP), mode (eg 100B)*/ |
| int c_media; /* Remember the last media conn */ |
| bool fdx; /* media full duplex flag */ |
| int linkOK; /* Link is OK */ |
| int autosense; /* Allow/disallow autosensing */ |
| bool tx_enable; /* Enable descriptor polling */ |
| int setup_f; /* Setup frame filtering type */ |
| int local_state; /* State within a 'media' state */ |
| struct mii_phy phy[DE4X5_MAX_PHY]; /* List of attached PHY devices */ |
| struct sia_phy sia; /* SIA PHY Information */ |
| int active; /* Index to active PHY device */ |
| int mii_cnt; /* Number of attached PHY's */ |
| int timeout; /* Scheduling counter */ |
| struct timer_list timer; /* Timer info for kernel */ |
| int tmp; /* Temporary global per card */ |
| struct { |
| u_long lock; /* Lock the cache accesses */ |
| s32 csr0; /* Saved Bus Mode Register */ |
| s32 csr6; /* Saved Operating Mode Reg. */ |
| s32 csr7; /* Saved IRQ Mask Register */ |
| s32 gep; /* Saved General Purpose Reg. */ |
| s32 gepc; /* Control info for GEP */ |
| s32 csr13; /* Saved SIA Connectivity Reg. */ |
| s32 csr14; /* Saved SIA TX/RX Register */ |
| s32 csr15; /* Saved SIA General Register */ |
| int save_cnt; /* Flag if state already saved */ |
| struct sk_buff_head queue; /* Save the (re-ordered) skb's */ |
| } cache; |
| struct de4x5_srom srom; /* A copy of the SROM */ |
| int cfrv; /* Card CFRV copy */ |
| int rx_ovf; /* Check for 'RX overflow' tag */ |
| bool useSROM; /* For non-DEC card use SROM */ |
| bool useMII; /* Infoblock using the MII */ |
| int asBitValid; /* Autosense bits in GEP? */ |
| int asPolarity; /* 0 => asserted high */ |
| int asBit; /* Autosense bit number in GEP */ |
| int defMedium; /* SROM default medium */ |
| int tcount; /* Last infoblock number */ |
| int infoblock_init; /* Initialised this infoblock? */ |
| int infoleaf_offset; /* SROM infoleaf for controller */ |
| s32 infoblock_csr6; /* csr6 value in SROM infoblock */ |
| int infoblock_media; /* infoblock media */ |
| int (*infoleaf_fn)(struct net_device *); /* Pointer to infoleaf function */ |
| u_char *rst; /* Pointer to Type 5 reset info */ |
| u_char ibn; /* Infoblock number */ |
| struct parameters params; /* Command line/ #defined params */ |
| struct device *gendev; /* Generic device */ |
| dma_addr_t dma_rings; /* DMA handle for rings */ |
| int dma_size; /* Size of the DMA area */ |
| char *rx_bufs; /* rx bufs on alpha, sparc, ... */ |
| }; |
| |
| /* |
| ** To get around certain poxy cards that don't provide an SROM |
| ** for the second and more DECchip, I have to key off the first |
| ** chip's address. I'll assume there's not a bad SROM iff: |
| ** |
| ** o the chipset is the same |
| ** o the bus number is the same and > 0 |
| ** o the sum of all the returned hw address bytes is 0 or 0x5fa |
| ** |
| ** Also have to save the irq for those cards whose hardware designers |
| ** can't follow the PCI to PCI Bridge Architecture spec. |
| */ |
| static struct { |
| int chipset; |
| int bus; |
| int irq; |
| u_char addr[ETH_ALEN]; |
| } last = {0,}; |
| |
| /* |
| ** The transmit ring full condition is described by the tx_old and tx_new |
| ** pointers by: |
| ** tx_old = tx_new Empty ring |
| ** tx_old = tx_new+1 Full ring |
| ** tx_old+txRingSize = tx_new+1 Full ring (wrapped condition) |
| */ |
| #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ |
| lp->tx_old+lp->txRingSize-lp->tx_new-1:\ |
| lp->tx_old -lp->tx_new-1) |
| |
| #define TX_PKT_PENDING (lp->tx_old != lp->tx_new) |
| |
| /* |
| ** Public Functions |
| */ |
| static int de4x5_open(struct net_device *dev); |
| static netdev_tx_t de4x5_queue_pkt(struct sk_buff *skb, |
| struct net_device *dev); |
| static irqreturn_t de4x5_interrupt(int irq, void *dev_id); |
| static int de4x5_close(struct net_device *dev); |
| static struct net_device_stats *de4x5_get_stats(struct net_device *dev); |
| static void de4x5_local_stats(struct net_device *dev, char *buf, int pkt_len); |
| static void set_multicast_list(struct net_device *dev); |
| static int de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| |
| /* |
| ** Private functions |
| */ |
| static int de4x5_hw_init(struct net_device *dev, u_long iobase, struct device *gendev); |
| static int de4x5_init(struct net_device *dev); |
| static int de4x5_sw_reset(struct net_device *dev); |
| static int de4x5_rx(struct net_device *dev); |
| static int de4x5_tx(struct net_device *dev); |
| static void de4x5_ast(struct net_device *dev); |
| static int de4x5_txur(struct net_device *dev); |
| static int de4x5_rx_ovfc(struct net_device *dev); |
| |
| static int autoconf_media(struct net_device *dev); |
| static void create_packet(struct net_device *dev, char *frame, int len); |
| static void load_packet(struct net_device *dev, char *buf, u32 flags, struct sk_buff *skb); |
| static int dc21040_autoconf(struct net_device *dev); |
| static int dc21041_autoconf(struct net_device *dev); |
| static int dc21140m_autoconf(struct net_device *dev); |
| static int dc2114x_autoconf(struct net_device *dev); |
| static int srom_autoconf(struct net_device *dev); |
| static int de4x5_suspect_state(struct net_device *dev, int timeout, int prev_state, int (*fn)(struct net_device *, int), int (*asfn)(struct net_device *)); |
| static int dc21040_state(struct net_device *dev, int csr13, int csr14, int csr15, int timeout, int next_state, int suspect_state, int (*fn)(struct net_device *, int)); |
| static int test_media(struct net_device *dev, s32 irqs, s32 irq_mask, s32 csr13, s32 csr14, s32 csr15, s32 msec); |
| static int test_for_100Mb(struct net_device *dev, int msec); |
| static int wait_for_link(struct net_device *dev); |
| static int test_mii_reg(struct net_device *dev, int reg, int mask, bool pol, long msec); |
| static int is_spd_100(struct net_device *dev); |
| static int is_100_up(struct net_device *dev); |
| static int is_10_up(struct net_device *dev); |
| static int is_anc_capable(struct net_device *dev); |
| static int ping_media(struct net_device *dev, int msec); |
| static struct sk_buff *de4x5_alloc_rx_buff(struct net_device *dev, int index, int len); |
| static void de4x5_free_rx_buffs(struct net_device *dev); |
| static void de4x5_free_tx_buffs(struct net_device *dev); |
| static void de4x5_save_skbs(struct net_device *dev); |
| static void de4x5_rst_desc_ring(struct net_device *dev); |
| static void de4x5_cache_state(struct net_device *dev, int flag); |
| static void de4x5_put_cache(struct net_device *dev, struct sk_buff *skb); |
| static void de4x5_putb_cache(struct net_device *dev, struct sk_buff *skb); |
| static struct sk_buff *de4x5_get_cache(struct net_device *dev); |
| static void de4x5_setup_intr(struct net_device *dev); |
| static void de4x5_init_connection(struct net_device *dev); |
| static int de4x5_reset_phy(struct net_device *dev); |
| static void reset_init_sia(struct net_device *dev, s32 sicr, s32 strr, s32 sigr); |
| static int test_ans(struct net_device *dev, s32 irqs, s32 irq_mask, s32 msec); |
| static int test_tp(struct net_device *dev, s32 msec); |
| static int EISA_signature(char *name, struct device *device); |
| static int PCI_signature(char *name, struct de4x5_private *lp); |
| static void DevicePresent(struct net_device *dev, u_long iobase); |
| static void enet_addr_rst(u_long aprom_addr); |
| static int de4x5_bad_srom(struct de4x5_private *lp); |
| static short srom_rd(u_long address, u_char offset); |
| static void srom_latch(u_int command, u_long address); |
| static void srom_command(u_int command, u_long address); |
| static void srom_address(u_int command, u_long address, u_char offset); |
| static short srom_data(u_int command, u_long address); |
| /*static void srom_busy(u_int command, u_long address);*/ |
| static void sendto_srom(u_int command, u_long addr); |
| static int getfrom_srom(u_long addr); |
| static int srom_map_media(struct net_device *dev); |
| static int srom_infoleaf_info(struct net_device *dev); |
| static void srom_init(struct net_device *dev); |
| static void srom_exec(struct net_device *dev, u_char *p); |
| static int mii_rd(u_char phyreg, u_char phyaddr, u_long ioaddr); |
| static void mii_wr(int data, u_char phyreg, u_char phyaddr, u_long ioaddr); |
| static int mii_rdata(u_long ioaddr); |
| static void mii_wdata(int data, int len, u_long ioaddr); |
| static void mii_ta(u_long rw, u_long ioaddr); |
| static int mii_swap(int data, int len); |
| static void mii_address(u_char addr, u_long ioaddr); |
| static void sendto_mii(u32 command, int data, u_long ioaddr); |
| static int getfrom_mii(u32 command, u_long ioaddr); |
| static int mii_get_oui(u_char phyaddr, u_long ioaddr); |
| static int mii_get_phy(struct net_device *dev); |
| static void SetMulticastFilter(struct net_device *dev); |
| static int get_hw_addr(struct net_device *dev); |
| static void srom_repair(struct net_device *dev, int card); |
| static int test_bad_enet(struct net_device *dev, int status); |
| static int an_exception(struct de4x5_private *lp); |
| static char *build_setup_frame(struct net_device *dev, int mode); |
| static void disable_ast(struct net_device *dev); |
| static long de4x5_switch_mac_port(struct net_device *dev); |
| static int gep_rd(struct net_device *dev); |
| static void gep_wr(s32 data, struct net_device *dev); |
| static void yawn(struct net_device *dev, int state); |
| static void de4x5_parse_params(struct net_device *dev); |
| static void de4x5_dbg_open(struct net_device *dev); |
| static void de4x5_dbg_mii(struct net_device *dev, int k); |
| static void de4x5_dbg_media(struct net_device *dev); |
| static void de4x5_dbg_srom(struct de4x5_srom *p); |
| static void de4x5_dbg_rx(struct sk_buff *skb, int len); |
| static int de4x5_strncmp(char *a, char *b, int n); |
| static int dc21041_infoleaf(struct net_device *dev); |
| static int dc21140_infoleaf(struct net_device *dev); |
| static int dc21142_infoleaf(struct net_device *dev); |
| static int dc21143_infoleaf(struct net_device *dev); |
| static int type0_infoblock(struct net_device *dev, u_char count, u_char *p); |
| static int type1_infoblock(struct net_device *dev, u_char count, u_char *p); |
| static int type2_infoblock(struct net_device *dev, u_char count, u_char *p); |
| static int type3_infoblock(struct net_device *dev, u_char count, u_char *p); |
| static int type4_infoblock(struct net_device *dev, u_char count, u_char *p); |
| static int type5_infoblock(struct net_device *dev, u_char count, u_char *p); |
| static int compact_infoblock(struct net_device *dev, u_char count, u_char *p); |
| |
| /* |
| ** Note now that module autoprobing is allowed under EISA and PCI. The |
| ** IRQ lines will not be auto-detected; instead I'll rely on the BIOSes |
| ** to "do the right thing". |
| */ |
| |
| static int io=0x0;/* EDIT THIS LINE FOR YOUR CONFIGURATION IF NEEDED */ |
| |
| module_param(io, int, 0); |
| module_param(de4x5_debug, int, 0); |
| module_param(dec_only, int, 0); |
| module_param(args, charp, 0); |
| |
| MODULE_PARM_DESC(io, "de4x5 I/O base address"); |
| MODULE_PARM_DESC(de4x5_debug, "de4x5 debug mask"); |
| MODULE_PARM_DESC(dec_only, "de4x5 probe only for Digital boards (0-1)"); |
| MODULE_PARM_DESC(args, "de4x5 full duplex and media type settings; see de4x5.c for details"); |
| MODULE_LICENSE("GPL"); |
| |
| /* |
| ** List the SROM infoleaf functions and chipsets |
| */ |
| struct InfoLeaf { |
| int chipset; |
| int (*fn)(struct net_device *); |
| }; |
| static struct InfoLeaf infoleaf_array[] = { |
| {DC21041, dc21041_infoleaf}, |
| {DC21140, dc21140_infoleaf}, |
| {DC21142, dc21142_infoleaf}, |
| {DC21143, dc21143_infoleaf} |
| }; |
| #define INFOLEAF_SIZE ARRAY_SIZE(infoleaf_array) |
| |
| /* |
| ** List the SROM info block functions |
| */ |
| static int (*dc_infoblock[])(struct net_device *dev, u_char, u_char *) = { |
| type0_infoblock, |
| type1_infoblock, |
| type2_infoblock, |
| type3_infoblock, |
| type4_infoblock, |
| type5_infoblock, |
| compact_infoblock |
| }; |
| |
| #define COMPACT (ARRAY_SIZE(dc_infoblock) - 1) |
| |
| /* |
| ** Miscellaneous defines... |
| */ |
| #define RESET_DE4X5 {\ |
| int i;\ |
| i=inl(DE4X5_BMR);\ |
| mdelay(1);\ |
| outl(i | BMR_SWR, DE4X5_BMR);\ |
| mdelay(1);\ |
| outl(i, DE4X5_BMR);\ |
| mdelay(1);\ |
| for (i=0;i<5;i++) {inl(DE4X5_BMR); mdelay(1);}\ |
| mdelay(1);\ |
| } |
| |
| #define PHY_HARD_RESET {\ |
| outl(GEP_HRST, DE4X5_GEP); /* Hard RESET the PHY dev. */\ |
| mdelay(1); /* Assert for 1ms */\ |
| outl(0x00, DE4X5_GEP);\ |
| mdelay(2); /* Wait for 2ms */\ |
| } |
| |
| static const struct net_device_ops de4x5_netdev_ops = { |
| .ndo_open = de4x5_open, |
| .ndo_stop = de4x5_close, |
| .ndo_start_xmit = de4x5_queue_pkt, |
| .ndo_get_stats = de4x5_get_stats, |
| .ndo_set_multicast_list = set_multicast_list, |
| .ndo_do_ioctl = de4x5_ioctl, |
| .ndo_change_mtu = eth_change_mtu, |
| .ndo_set_mac_address= eth_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| }; |
| |
| |
| static int __devinit |
| de4x5_hw_init(struct net_device *dev, u_long iobase, struct device *gendev) |
| { |
| char name[DE4X5_NAME_LENGTH + 1]; |
| struct de4x5_private *lp = netdev_priv(dev); |
| struct pci_dev *pdev = NULL; |
| int i, status=0; |
| |
| dev_set_drvdata(gendev, dev); |
| |
| /* Ensure we're not sleeping */ |
| if (lp->bus == EISA) { |
| outb(WAKEUP, PCI_CFPM); |
| } else { |
| pdev = to_pci_dev (gendev); |
| pci_write_config_byte(pdev, PCI_CFDA_PSM, WAKEUP); |
| } |
| mdelay(10); |
| |
| RESET_DE4X5; |
| |
| if ((inl(DE4X5_STS) & (STS_TS | STS_RS)) != 0) { |
| return -ENXIO; /* Hardware could not reset */ |
| } |
| |
| /* |
| ** Now find out what kind of DC21040/DC21041/DC21140 board we have. |
| */ |
| lp->useSROM = false; |
| if (lp->bus == PCI) { |
| PCI_signature(name, lp); |
| } else { |
| EISA_signature(name, gendev); |
| } |
| |
| if (*name == '\0') { /* Not found a board signature */ |
| return -ENXIO; |
| } |
| |
| dev->base_addr = iobase; |
| printk ("%s: %s at 0x%04lx", dev_name(gendev), name, iobase); |
| |
| status = get_hw_addr(dev); |
| printk(", h/w address %pM\n", dev->dev_addr); |
| |
| if (status != 0) { |
| printk(" which has an Ethernet PROM CRC error.\n"); |
| return -ENXIO; |
| } else { |
| skb_queue_head_init(&lp->cache.queue); |
| lp->cache.gepc = GEP_INIT; |
| lp->asBit = GEP_SLNK; |
| lp->asPolarity = GEP_SLNK; |
| lp->asBitValid = ~0; |
| lp->timeout = -1; |
| lp->gendev = gendev; |
| spin_lock_init(&lp->lock); |
| init_timer(&lp->timer); |
| lp->timer.function = (void (*)(unsigned long))de4x5_ast; |
| lp->timer.data = (unsigned long)dev; |
| de4x5_parse_params(dev); |
| |
| /* |
| ** Choose correct autosensing in case someone messed up |
| */ |
| lp->autosense = lp->params.autosense; |
| if (lp->chipset != DC21140) { |
| if ((lp->chipset==DC21040) && (lp->params.autosense&TP_NW)) { |
| lp->params.autosense = TP; |
| } |
| if ((lp->chipset==DC21041) && (lp->params.autosense&BNC_AUI)) { |
| lp->params.autosense = BNC; |
| } |
| } |
| lp->fdx = lp->params.fdx; |
| sprintf(lp->adapter_name,"%s (%s)", name, dev_name(gendev)); |
| |
| lp->dma_size = (NUM_RX_DESC + NUM_TX_DESC) * sizeof(struct de4x5_desc); |
| #if defined(__alpha__) || defined(__powerpc__) || defined(CONFIG_SPARC) || defined(DE4X5_DO_MEMCPY) |
| lp->dma_size += RX_BUFF_SZ * NUM_RX_DESC + DE4X5_ALIGN; |
| #endif |
| lp->rx_ring = dma_alloc_coherent(gendev, lp->dma_size, |
| &lp->dma_rings, GFP_ATOMIC); |
| if (lp->rx_ring == NULL) { |
| return -ENOMEM; |
| } |
| |
| lp->tx_ring = lp->rx_ring + NUM_RX_DESC; |
| |
| /* |
| ** Set up the RX descriptor ring (Intels) |
| ** Allocate contiguous receive buffers, long word aligned (Alphas) |
| */ |
| #if !defined(__alpha__) && !defined(__powerpc__) && !defined(CONFIG_SPARC) && !defined(DE4X5_DO_MEMCPY) |
| for (i=0; i<NUM_RX_DESC; i++) { |
| lp->rx_ring[i].status = 0; |
| lp->rx_ring[i].des1 = cpu_to_le32(RX_BUFF_SZ); |
| lp->rx_ring[i].buf = 0; |
| lp->rx_ring[i].next = 0; |
| lp->rx_skb[i] = (struct sk_buff *) 1; /* Dummy entry */ |
| } |
| |
| #else |
| { |
| dma_addr_t dma_rx_bufs; |
| |
| dma_rx_bufs = lp->dma_rings + (NUM_RX_DESC + NUM_TX_DESC) |
| * sizeof(struct de4x5_desc); |
| dma_rx_bufs = (dma_rx_bufs + DE4X5_ALIGN) & ~DE4X5_ALIGN; |
| lp->rx_bufs = (char *)(((long)(lp->rx_ring + NUM_RX_DESC |
| + NUM_TX_DESC) + DE4X5_ALIGN) & ~DE4X5_ALIGN); |
| for (i=0; i<NUM_RX_DESC; i++) { |
| lp->rx_ring[i].status = 0; |
| lp->rx_ring[i].des1 = cpu_to_le32(RX_BUFF_SZ); |
| lp->rx_ring[i].buf = |
| cpu_to_le32(dma_rx_bufs+i*RX_BUFF_SZ); |
| lp->rx_ring[i].next = 0; |
| lp->rx_skb[i] = (struct sk_buff *) 1; /* Dummy entry */ |
| } |
| |
| } |
| #endif |
| |
| barrier(); |
| |
| lp->rxRingSize = NUM_RX_DESC; |
| lp->txRingSize = NUM_TX_DESC; |
| |
| /* Write the end of list marker to the descriptor lists */ |
| lp->rx_ring[lp->rxRingSize - 1].des1 |= cpu_to_le32(RD_RER); |
| lp->tx_ring[lp->txRingSize - 1].des1 |= cpu_to_le32(TD_TER); |
| |
| /* Tell the adapter where the TX/RX rings are located. */ |
| outl(lp->dma_rings, DE4X5_RRBA); |
| outl(lp->dma_rings + NUM_RX_DESC * sizeof(struct de4x5_desc), |
| DE4X5_TRBA); |
| |
| /* Initialise the IRQ mask and Enable/Disable */ |
| lp->irq_mask = IMR_RIM | IMR_TIM | IMR_TUM | IMR_UNM; |
| lp->irq_en = IMR_NIM | IMR_AIM; |
| |
| /* Create a loopback packet frame for later media probing */ |
| create_packet(dev, lp->frame, sizeof(lp->frame)); |
| |
| /* Check if the RX overflow bug needs testing for */ |
| i = lp->cfrv & 0x000000fe; |
| if ((lp->chipset == DC21140) && (i == 0x20)) { |
| lp->rx_ovf = 1; |
| } |
| |
| /* Initialise the SROM pointers if possible */ |
| if (lp->useSROM) { |
| lp->state = INITIALISED; |
| if (srom_infoleaf_info(dev)) { |
| dma_free_coherent (gendev, lp->dma_size, |
| lp->rx_ring, lp->dma_rings); |
| return -ENXIO; |
| } |
| srom_init(dev); |
| } |
| |
| lp->state = CLOSED; |
| |
| /* |
| ** Check for an MII interface |
| */ |
| if ((lp->chipset != DC21040) && (lp->chipset != DC21041)) { |
| mii_get_phy(dev); |
| } |
| |
| printk(" and requires IRQ%d (provided by %s).\n", dev->irq, |
| ((lp->bus == PCI) ? "PCI BIOS" : "EISA CNFG")); |
| } |
| |
| if (de4x5_debug & DEBUG_VERSION) { |
| printk(version); |
| } |
| |
| /* The DE4X5-specific entries in the device structure. */ |
| SET_NETDEV_DEV(dev, gendev); |
| dev->netdev_ops = &de4x5_netdev_ops; |
| dev->mem_start = 0; |
| |
| /* Fill in the generic fields of the device structure. */ |
| if ((status = register_netdev (dev))) { |
| dma_free_coherent (gendev, lp->dma_size, |
| lp->rx_ring, lp->dma_rings); |
| return status; |
| } |
| |
| /* Let the adapter sleep to save power */ |
| yawn(dev, SLEEP); |
| |
| return status; |
| } |
| |
| |
| static int |
| de4x5_open(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| int i, status = 0; |
| s32 omr; |
| |
| /* Allocate the RX buffers */ |
| for (i=0; i<lp->rxRingSize; i++) { |
| if (de4x5_alloc_rx_buff(dev, i, 0) == NULL) { |
| de4x5_free_rx_buffs(dev); |
| return -EAGAIN; |
| } |
| } |
| |
| /* |
| ** Wake up the adapter |
| */ |
| yawn(dev, WAKEUP); |
| |
| /* |
| ** Re-initialize the DE4X5... |
| */ |
| status = de4x5_init(dev); |
| spin_lock_init(&lp->lock); |
| lp->state = OPEN; |
| de4x5_dbg_open(dev); |
| |
| if (request_irq(dev->irq, de4x5_interrupt, IRQF_SHARED, |
| lp->adapter_name, dev)) { |
| printk("de4x5_open(): Requested IRQ%d is busy - attemping FAST/SHARE...", dev->irq); |
| if (request_irq(dev->irq, de4x5_interrupt, IRQF_DISABLED | IRQF_SHARED, |
| lp->adapter_name, dev)) { |
| printk("\n Cannot get IRQ- reconfigure your hardware.\n"); |
| disable_ast(dev); |
| de4x5_free_rx_buffs(dev); |
| de4x5_free_tx_buffs(dev); |
| yawn(dev, SLEEP); |
| lp->state = CLOSED; |
| return -EAGAIN; |
| } else { |
| printk("\n Succeeded, but you should reconfigure your hardware to avoid this.\n"); |
| printk("WARNING: there may be IRQ related problems in heavily loaded systems.\n"); |
| } |
| } |
| |
| lp->interrupt = UNMASK_INTERRUPTS; |
| dev->trans_start = jiffies; /* prevent tx timeout */ |
| |
| START_DE4X5; |
| |
| de4x5_setup_intr(dev); |
| |
| if (de4x5_debug & DEBUG_OPEN) { |
| printk("\tsts: 0x%08x\n", inl(DE4X5_STS)); |
| printk("\tbmr: 0x%08x\n", inl(DE4X5_BMR)); |
| printk("\timr: 0x%08x\n", inl(DE4X5_IMR)); |
| printk("\tomr: 0x%08x\n", inl(DE4X5_OMR)); |
| printk("\tsisr: 0x%08x\n", inl(DE4X5_SISR)); |
| printk("\tsicr: 0x%08x\n", inl(DE4X5_SICR)); |
| printk("\tstrr: 0x%08x\n", inl(DE4X5_STRR)); |
| printk("\tsigr: 0x%08x\n", inl(DE4X5_SIGR)); |
| } |
| |
| return status; |
| } |
| |
| /* |
| ** Initialize the DE4X5 operating conditions. NB: a chip problem with the |
| ** DC21140 requires using perfect filtering mode for that chip. Since I can't |
| ** see why I'd want > 14 multicast addresses, I have changed all chips to use |
| ** the perfect filtering mode. Keep the DMA burst length at 8: there seems |
| ** to be data corruption problems if it is larger (UDP errors seen from a |
| ** ttcp source). |
| */ |
| static int |
| de4x5_init(struct net_device *dev) |
| { |
| /* Lock out other processes whilst setting up the hardware */ |
| netif_stop_queue(dev); |
| |
| de4x5_sw_reset(dev); |
| |
| /* Autoconfigure the connected port */ |
| autoconf_media(dev); |
| |
| return 0; |
| } |
| |
| static int |
| de4x5_sw_reset(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| int i, j, status = 0; |
| s32 bmr, omr; |
| |
| /* Select the MII or SRL port now and RESET the MAC */ |
| if (!lp->useSROM) { |
| if (lp->phy[lp->active].id != 0) { |
| lp->infoblock_csr6 = OMR_SDP | OMR_PS | OMR_HBD; |
| } else { |
| lp->infoblock_csr6 = OMR_SDP | OMR_TTM; |
| } |
| de4x5_switch_mac_port(dev); |
| } |
| |
| /* |
| ** Set the programmable burst length to 8 longwords for all the DC21140 |
| ** Fasternet chips and 4 longwords for all others: DMA errors result |
| ** without these values. Cache align 16 long. |
| */ |
| bmr = (lp->chipset==DC21140 ? PBL_8 : PBL_4) | DESC_SKIP_LEN | DE4X5_CACHE_ALIGN; |
| bmr |= ((lp->chipset & ~0x00ff)==DC2114x ? BMR_RML : 0); |
| outl(bmr, DE4X5_BMR); |
| |
| omr = inl(DE4X5_OMR) & ~OMR_PR; /* Turn off promiscuous mode */ |
| if (lp->chipset == DC21140) { |
| omr |= (OMR_SDP | OMR_SB); |
| } |
| lp->setup_f = PERFECT; |
| outl(lp->dma_rings, DE4X5_RRBA); |
| outl(lp->dma_rings + NUM_RX_DESC * sizeof(struct de4x5_desc), |
| DE4X5_TRBA); |
| |
| lp->rx_new = lp->rx_old = 0; |
| lp->tx_new = lp->tx_old = 0; |
| |
| for (i = 0; i < lp->rxRingSize; i++) { |
| lp->rx_ring[i].status = cpu_to_le32(R_OWN); |
| } |
| |
| for (i = 0; i < lp->txRingSize; i++) { |
| lp->tx_ring[i].status = cpu_to_le32(0); |
| } |
| |
| barrier(); |
| |
| /* Build the setup frame depending on filtering mode */ |
| SetMulticastFilter(dev); |
| |
| load_packet(dev, lp->setup_frame, PERFECT_F|TD_SET|SETUP_FRAME_LEN, (struct sk_buff *)1); |
| outl(omr|OMR_ST, DE4X5_OMR); |
| |
| /* Poll for setup frame completion (adapter interrupts are disabled now) */ |
| |
| for (j=0, i=0;(i<500) && (j==0);i++) { /* Upto 500ms delay */ |
| mdelay(1); |
| if ((s32)le32_to_cpu(lp->tx_ring[lp->tx_new].status) >= 0) j=1; |
| } |
| outl(omr, DE4X5_OMR); /* Stop everything! */ |
| |
| if (j == 0) { |
| printk("%s: Setup frame timed out, status %08x\n", dev->name, |
| inl(DE4X5_STS)); |
| status = -EIO; |
| } |
| |
| lp->tx_new = (lp->tx_new + 1) % lp->txRingSize; |
| lp->tx_old = lp->tx_new; |
| |
| return status; |
| } |
| |
| /* |
| ** Writes a socket buffer address to the next available transmit descriptor. |
| */ |
| static netdev_tx_t |
| de4x5_queue_pkt(struct sk_buff *skb, struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| u_long flags = 0; |
| |
| netif_stop_queue(dev); |
| if (!lp->tx_enable) /* Cannot send for now */ |
| return NETDEV_TX_LOCKED; |
| |
| /* |
| ** Clean out the TX ring asynchronously to interrupts - sometimes the |
| ** interrupts are lost by delayed descriptor status updates relative to |
| ** the irq assertion, especially with a busy PCI bus. |
| */ |
| spin_lock_irqsave(&lp->lock, flags); |
| de4x5_tx(dev); |
| spin_unlock_irqrestore(&lp->lock, flags); |
| |
| /* Test if cache is already locked - requeue skb if so */ |
| if (test_and_set_bit(0, (void *)&lp->cache.lock) && !lp->interrupt) |
| return NETDEV_TX_LOCKED; |
| |
| /* Transmit descriptor ring full or stale skb */ |
| if (netif_queue_stopped(dev) || (u_long) lp->tx_skb[lp->tx_new] > 1) { |
| if (lp->interrupt) { |
| de4x5_putb_cache(dev, skb); /* Requeue the buffer */ |
| } else { |
| de4x5_put_cache(dev, skb); |
| } |
| if (de4x5_debug & DEBUG_TX) { |
| printk("%s: transmit busy, lost media or stale skb found:\n STS:%08x\n tbusy:%d\n IMR:%08x\n OMR:%08x\n Stale skb: %s\n",dev->name, inl(DE4X5_STS), netif_queue_stopped(dev), inl(DE4X5_IMR), inl(DE4X5_OMR), ((u_long) lp->tx_skb[lp->tx_new] > 1) ? "YES" : "NO"); |
| } |
| } else if (skb->len > 0) { |
| /* If we already have stuff queued locally, use that first */ |
| if (!skb_queue_empty(&lp->cache.queue) && !lp->interrupt) { |
| de4x5_put_cache(dev, skb); |
| skb = de4x5_get_cache(dev); |
| } |
| |
| while (skb && !netif_queue_stopped(dev) && |
| (u_long) lp->tx_skb[lp->tx_new] <= 1) { |
| spin_lock_irqsave(&lp->lock, flags); |
| netif_stop_queue(dev); |
| load_packet(dev, skb->data, TD_IC | TD_LS | TD_FS | skb->len, skb); |
| lp->stats.tx_bytes += skb->len; |
| outl(POLL_DEMAND, DE4X5_TPD);/* Start the TX */ |
| |
| lp->tx_new = (lp->tx_new + 1) % lp->txRingSize; |
| |
| if (TX_BUFFS_AVAIL) { |
| netif_start_queue(dev); /* Another pkt may be queued */ |
| } |
| skb = de4x5_get_cache(dev); |
| spin_unlock_irqrestore(&lp->lock, flags); |
| } |
| if (skb) de4x5_putb_cache(dev, skb); |
| } |
| |
| lp->cache.lock = 0; |
| |
| return NETDEV_TX_OK; |
| } |
| |
| /* |
| ** The DE4X5 interrupt handler. |
| ** |
| ** I/O Read/Writes through intermediate PCI bridges are never 'posted', |
| ** so that the asserted interrupt always has some real data to work with - |
| ** if these I/O accesses are ever changed to memory accesses, ensure the |
| ** STS write is read immediately to complete the transaction if the adapter |
| ** is not on bus 0. Lost interrupts can still occur when the PCI bus load |
| ** is high and descriptor status bits cannot be set before the associated |
| ** interrupt is asserted and this routine entered. |
| */ |
| static irqreturn_t |
| de4x5_interrupt(int irq, void *dev_id) |
| { |
| struct net_device *dev = dev_id; |
| struct de4x5_private *lp; |
| s32 imr, omr, sts, limit; |
| u_long iobase; |
| unsigned int handled = 0; |
| |
| lp = netdev_priv(dev); |
| spin_lock(&lp->lock); |
| iobase = dev->base_addr; |
| |
| DISABLE_IRQs; /* Ensure non re-entrancy */ |
| |
| if (test_and_set_bit(MASK_INTERRUPTS, (void*) &lp->interrupt)) |
| printk("%s: Re-entering the interrupt handler.\n", dev->name); |
| |
| synchronize_irq(dev->irq); |
| |
| for (limit=0; limit<8; limit++) { |
| sts = inl(DE4X5_STS); /* Read IRQ status */ |
| outl(sts, DE4X5_STS); /* Reset the board interrupts */ |
| |
| if (!(sts & lp->irq_mask)) break;/* All done */ |
| handled = 1; |
| |
| if (sts & (STS_RI | STS_RU)) /* Rx interrupt (packet[s] arrived) */ |
| de4x5_rx(dev); |
| |
| if (sts & (STS_TI | STS_TU)) /* Tx interrupt (packet sent) */ |
| de4x5_tx(dev); |
| |
| if (sts & STS_LNF) { /* TP Link has failed */ |
| lp->irq_mask &= ~IMR_LFM; |
| } |
| |
| if (sts & STS_UNF) { /* Transmit underrun */ |
| de4x5_txur(dev); |
| } |
| |
| if (sts & STS_SE) { /* Bus Error */ |
| STOP_DE4X5; |
| printk("%s: Fatal bus error occurred, sts=%#8x, device stopped.\n", |
| dev->name, sts); |
| spin_unlock(&lp->lock); |
| return IRQ_HANDLED; |
| } |
| } |
| |
| /* Load the TX ring with any locally stored packets */ |
| if (!test_and_set_bit(0, (void *)&lp->cache.lock)) { |
| while (!skb_queue_empty(&lp->cache.queue) && !netif_queue_stopped(dev) && lp->tx_enable) { |
| de4x5_queue_pkt(de4x5_get_cache(dev), dev); |
| } |
| lp->cache.lock = 0; |
| } |
| |
| lp->interrupt = UNMASK_INTERRUPTS; |
| ENABLE_IRQs; |
| spin_unlock(&lp->lock); |
| |
| return IRQ_RETVAL(handled); |
| } |
| |
| static int |
| de4x5_rx(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| int entry; |
| s32 status; |
| |
| for (entry=lp->rx_new; (s32)le32_to_cpu(lp->rx_ring[entry].status)>=0; |
| entry=lp->rx_new) { |
| status = (s32)le32_to_cpu(lp->rx_ring[entry].status); |
| |
| if (lp->rx_ovf) { |
| if (inl(DE4X5_MFC) & MFC_FOCM) { |
| de4x5_rx_ovfc(dev); |
| break; |
| } |
| } |
| |
| if (status & RD_FS) { /* Remember the start of frame */ |
| lp->rx_old = entry; |
| } |
| |
| if (status & RD_LS) { /* Valid frame status */ |
| if (lp->tx_enable) lp->linkOK++; |
| if (status & RD_ES) { /* There was an error. */ |
| lp->stats.rx_errors++; /* Update the error stats. */ |
| if (status & (RD_RF | RD_TL)) lp->stats.rx_frame_errors++; |
| if (status & RD_CE) lp->stats.rx_crc_errors++; |
| if (status & RD_OF) lp->stats.rx_fifo_errors++; |
| if (status & RD_TL) lp->stats.rx_length_errors++; |
| if (status & RD_RF) lp->pktStats.rx_runt_frames++; |
| if (status & RD_CS) lp->pktStats.rx_collision++; |
| if (status & RD_DB) lp->pktStats.rx_dribble++; |
| if (status & RD_OF) lp->pktStats.rx_overflow++; |
| } else { /* A valid frame received */ |
| struct sk_buff *skb; |
| short pkt_len = (short)(le32_to_cpu(lp->rx_ring[entry].status) |
| >> 16) - 4; |
| |
| if ((skb = de4x5_alloc_rx_buff(dev, entry, pkt_len)) == NULL) { |
| printk("%s: Insufficient memory; nuking packet.\n", |
| dev->name); |
| lp->stats.rx_dropped++; |
| } else { |
| de4x5_dbg_rx(skb, pkt_len); |
| |
| /* Push up the protocol stack */ |
| skb->protocol=eth_type_trans(skb,dev); |
| de4x5_local_stats(dev, skb->data, pkt_len); |
| netif_rx(skb); |
| |
| /* Update stats */ |
| lp->stats.rx_packets++; |
| lp->stats.rx_bytes += pkt_len; |
| } |
| } |
| |
| /* Change buffer ownership for this frame, back to the adapter */ |
| for (;lp->rx_old!=entry;lp->rx_old=(lp->rx_old + 1)%lp->rxRingSize) { |
| lp->rx_ring[lp->rx_old].status = cpu_to_le32(R_OWN); |
| barrier(); |
| } |
| lp->rx_ring[entry].status = cpu_to_le32(R_OWN); |
| barrier(); |
| } |
| |
| /* |
| ** Update entry information |
| */ |
| lp->rx_new = (lp->rx_new + 1) % lp->rxRingSize; |
| } |
| |
| return 0; |
| } |
| |
| static inline void |
| de4x5_free_tx_buff(struct de4x5_private *lp, int entry) |
| { |
| dma_unmap_single(lp->gendev, le32_to_cpu(lp->tx_ring[entry].buf), |
| le32_to_cpu(lp->tx_ring[entry].des1) & TD_TBS1, |
| DMA_TO_DEVICE); |
| if ((u_long) lp->tx_skb[entry] > 1) |
| dev_kfree_skb_irq(lp->tx_skb[entry]); |
| lp->tx_skb[entry] = NULL; |
| } |
| |
| /* |
| ** Buffer sent - check for TX buffer errors. |
| */ |
| static int |
| de4x5_tx(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| int entry; |
| s32 status; |
| |
| for (entry = lp->tx_old; entry != lp->tx_new; entry = lp->tx_old) { |
| status = (s32)le32_to_cpu(lp->tx_ring[entry].status); |
| if (status < 0) { /* Buffer not sent yet */ |
| break; |
| } else if (status != 0x7fffffff) { /* Not setup frame */ |
| if (status & TD_ES) { /* An error happened */ |
| lp->stats.tx_errors++; |
| if (status & TD_NC) lp->stats.tx_carrier_errors++; |
| if (status & TD_LC) lp->stats.tx_window_errors++; |
| if (status & TD_UF) lp->stats.tx_fifo_errors++; |
| if (status & TD_EC) lp->pktStats.excessive_collisions++; |
| if (status & TD_DE) lp->stats.tx_aborted_errors++; |
| |
| if (TX_PKT_PENDING) { |
| outl(POLL_DEMAND, DE4X5_TPD);/* Restart a stalled TX */ |
| } |
| } else { /* Packet sent */ |
| lp->stats.tx_packets++; |
| if (lp->tx_enable) lp->linkOK++; |
| } |
| /* Update the collision counter */ |
| lp->stats.collisions += ((status & TD_EC) ? 16 : |
| ((status & TD_CC) >> 3)); |
| |
| /* Free the buffer. */ |
| if (lp->tx_skb[entry] != NULL) |
| de4x5_free_tx_buff(lp, entry); |
| } |
| |
| /* Update all the pointers */ |
| lp->tx_old = (lp->tx_old + 1) % lp->txRingSize; |
| } |
| |
| /* Any resources available? */ |
| if (TX_BUFFS_AVAIL && netif_queue_stopped(dev)) { |
| if (lp->interrupt) |
| netif_wake_queue(dev); |
| else |
| netif_start_queue(dev); |
| } |
| |
| return 0; |
| } |
| |
| static void |
| de4x5_ast(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| int next_tick = DE4X5_AUTOSENSE_MS; |
| int dt; |
| |
| if (lp->useSROM) |
| next_tick = srom_autoconf(dev); |
| else if (lp->chipset == DC21140) |
| next_tick = dc21140m_autoconf(dev); |
| else if (lp->chipset == DC21041) |
| next_tick = dc21041_autoconf(dev); |
| else if (lp->chipset == DC21040) |
| next_tick = dc21040_autoconf(dev); |
| lp->linkOK = 0; |
| |
| dt = (next_tick * HZ) / 1000; |
| |
| if (!dt) |
| dt = 1; |
| |
| mod_timer(&lp->timer, jiffies + dt); |
| } |
| |
| static int |
| de4x5_txur(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| int omr; |
| |
| omr = inl(DE4X5_OMR); |
| if (!(omr & OMR_SF) || (lp->chipset==DC21041) || (lp->chipset==DC21040)) { |
| omr &= ~(OMR_ST|OMR_SR); |
| outl(omr, DE4X5_OMR); |
| while (inl(DE4X5_STS) & STS_TS); |
| if ((omr & OMR_TR) < OMR_TR) { |
| omr += 0x4000; |
| } else { |
| omr |= OMR_SF; |
| } |
| outl(omr | OMR_ST | OMR_SR, DE4X5_OMR); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| de4x5_rx_ovfc(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| int omr; |
| |
| omr = inl(DE4X5_OMR); |
| outl(omr & ~OMR_SR, DE4X5_OMR); |
| while (inl(DE4X5_STS) & STS_RS); |
| |
| for (; (s32)le32_to_cpu(lp->rx_ring[lp->rx_new].status)>=0;) { |
| lp->rx_ring[lp->rx_new].status = cpu_to_le32(R_OWN); |
| lp->rx_new = (lp->rx_new + 1) % lp->rxRingSize; |
| } |
| |
| outl(omr, DE4X5_OMR); |
| |
| return 0; |
| } |
| |
| static int |
| de4x5_close(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| s32 imr, omr; |
| |
| disable_ast(dev); |
| |
| netif_stop_queue(dev); |
| |
| if (de4x5_debug & DEBUG_CLOSE) { |
| printk("%s: Shutting down ethercard, status was %8.8x.\n", |
| dev->name, inl(DE4X5_STS)); |
| } |
| |
| /* |
| ** We stop the DE4X5 here... mask interrupts and stop TX & RX |
| */ |
| DISABLE_IRQs; |
| STOP_DE4X5; |
| |
| /* Free the associated irq */ |
| free_irq(dev->irq, dev); |
| lp->state = CLOSED; |
| |
| /* Free any socket buffers */ |
| de4x5_free_rx_buffs(dev); |
| de4x5_free_tx_buffs(dev); |
| |
| /* Put the adapter to sleep to save power */ |
| yawn(dev, SLEEP); |
| |
| return 0; |
| } |
| |
| static struct net_device_stats * |
| de4x5_get_stats(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| |
| lp->stats.rx_missed_errors = (int)(inl(DE4X5_MFC) & (MFC_OVFL | MFC_CNTR)); |
| |
| return &lp->stats; |
| } |
| |
| static void |
| de4x5_local_stats(struct net_device *dev, char *buf, int pkt_len) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| int i; |
| |
| for (i=1; i<DE4X5_PKT_STAT_SZ-1; i++) { |
| if (pkt_len < (i*DE4X5_PKT_BIN_SZ)) { |
| lp->pktStats.bins[i]++; |
| i = DE4X5_PKT_STAT_SZ; |
| } |
| } |
| if (buf[0] & 0x01) { /* Multicast/Broadcast */ |
| if ((*(s32 *)&buf[0] == -1) && (*(s16 *)&buf[4] == -1)) { |
| lp->pktStats.broadcast++; |
| } else { |
| lp->pktStats.multicast++; |
| } |
| } else if ((*(s32 *)&buf[0] == *(s32 *)&dev->dev_addr[0]) && |
| (*(s16 *)&buf[4] == *(s16 *)&dev->dev_addr[4])) { |
| lp->pktStats.unicast++; |
| } |
| |
| lp->pktStats.bins[0]++; /* Duplicates stats.rx_packets */ |
| if (lp->pktStats.bins[0] == 0) { /* Reset counters */ |
| memset((char *)&lp->pktStats, 0, sizeof(lp->pktStats)); |
| } |
| } |
| |
| /* |
| ** Removes the TD_IC flag from previous descriptor to improve TX performance. |
| ** If the flag is changed on a descriptor that is being read by the hardware, |
| ** I assume PCI transaction ordering will mean you are either successful or |
| ** just miss asserting the change to the hardware. Anyway you're messing with |
| ** a descriptor you don't own, but this shouldn't kill the chip provided |
| ** the descriptor register is read only to the hardware. |
| */ |
| static void |
| load_packet(struct net_device *dev, char *buf, u32 flags, struct sk_buff *skb) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| int entry = (lp->tx_new ? lp->tx_new-1 : lp->txRingSize-1); |
| dma_addr_t buf_dma = dma_map_single(lp->gendev, buf, flags & TD_TBS1, DMA_TO_DEVICE); |
| |
| lp->tx_ring[lp->tx_new].buf = cpu_to_le32(buf_dma); |
| lp->tx_ring[lp->tx_new].des1 &= cpu_to_le32(TD_TER); |
| lp->tx_ring[lp->tx_new].des1 |= cpu_to_le32(flags); |
| lp->tx_skb[lp->tx_new] = skb; |
| lp->tx_ring[entry].des1 &= cpu_to_le32(~TD_IC); |
| barrier(); |
| |
| lp->tx_ring[lp->tx_new].status = cpu_to_le32(T_OWN); |
| barrier(); |
| } |
| |
| /* |
| ** Set or clear the multicast filter for this adaptor. |
| */ |
| static void |
| set_multicast_list(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| |
| /* First, double check that the adapter is open */ |
| if (lp->state == OPEN) { |
| if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */ |
| u32 omr; |
| omr = inl(DE4X5_OMR); |
| omr |= OMR_PR; |
| outl(omr, DE4X5_OMR); |
| } else { |
| SetMulticastFilter(dev); |
| load_packet(dev, lp->setup_frame, TD_IC | PERFECT_F | TD_SET | |
| SETUP_FRAME_LEN, (struct sk_buff *)1); |
| |
| lp->tx_new = (lp->tx_new + 1) % lp->txRingSize; |
| outl(POLL_DEMAND, DE4X5_TPD); /* Start the TX */ |
| dev->trans_start = jiffies; /* prevent tx timeout */ |
| } |
| } |
| } |
| |
| /* |
| ** Calculate the hash code and update the logical address filter |
| ** from a list of ethernet multicast addresses. |
| ** Little endian crc one liner from Matt Thomas, DEC. |
| */ |
| static void |
| SetMulticastFilter(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| struct netdev_hw_addr *ha; |
| u_long iobase = dev->base_addr; |
| int i, bit, byte; |
| u16 hashcode; |
| u32 omr, crc; |
| char *pa; |
| unsigned char *addrs; |
| |
| omr = inl(DE4X5_OMR); |
| omr &= ~(OMR_PR | OMR_PM); |
| pa = build_setup_frame(dev, ALL); /* Build the basic frame */ |
| |
| if ((dev->flags & IFF_ALLMULTI) || (netdev_mc_count(dev) > 14)) { |
| omr |= OMR_PM; /* Pass all multicasts */ |
| } else if (lp->setup_f == HASH_PERF) { /* Hash Filtering */ |
| netdev_for_each_mc_addr(ha, dev) { |
| addrs = ha->addr; |
| if ((*addrs & 0x01) == 1) { /* multicast address? */ |
| crc = ether_crc_le(ETH_ALEN, addrs); |
| hashcode = crc & HASH_BITS; /* hashcode is 9 LSb of CRC */ |
| |
| byte = hashcode >> 3; /* bit[3-8] -> byte in filter */ |
| bit = 1 << (hashcode & 0x07);/* bit[0-2] -> bit in byte */ |
| |
| byte <<= 1; /* calc offset into setup frame */ |
| if (byte & 0x02) { |
| byte -= 1; |
| } |
| lp->setup_frame[byte] |= bit; |
| } |
| } |
| } else { /* Perfect filtering */ |
| netdev_for_each_mc_addr(ha, dev) { |
| addrs = ha->addr; |
| for (i=0; i<ETH_ALEN; i++) { |
| *(pa + (i&1)) = *addrs++; |
| if (i & 0x01) pa += 4; |
| } |
| } |
| } |
| outl(omr, DE4X5_OMR); |
| } |
| |
| #ifdef CONFIG_EISA |
| |
| static u_char de4x5_irq[] = EISA_ALLOWED_IRQ_LIST; |
| |
| static int __init de4x5_eisa_probe (struct device *gendev) |
| { |
| struct eisa_device *edev; |
| u_long iobase; |
| u_char irq, regval; |
| u_short vendor; |
| u32 cfid; |
| int status, device; |
| struct net_device *dev; |
| struct de4x5_private *lp; |
| |
| edev = to_eisa_device (gendev); |
| iobase = edev->base_addr; |
| |
| if (!request_region (iobase, DE4X5_EISA_TOTAL_SIZE, "de4x5")) |
| return -EBUSY; |
| |
| if (!request_region (iobase + DE4X5_EISA_IO_PORTS, |
| DE4X5_EISA_TOTAL_SIZE, "de4x5")) { |
| status = -EBUSY; |
| goto release_reg_1; |
| } |
| |
| if (!(dev = alloc_etherdev (sizeof (struct de4x5_private)))) { |
| status = -ENOMEM; |
| goto release_reg_2; |
| } |
| lp = netdev_priv(dev); |
| |
| cfid = (u32) inl(PCI_CFID); |
| lp->cfrv = (u_short) inl(PCI_CFRV); |
| device = (cfid >> 8) & 0x00ffff00; |
| vendor = (u_short) cfid; |
| |
| /* Read the EISA Configuration Registers */ |
| regval = inb(EISA_REG0) & (ER0_INTL | ER0_INTT); |
| #ifdef CONFIG_ALPHA |
| /* Looks like the Jensen firmware (rev 2.2) doesn't really |
| * care about the EISA configuration, and thus doesn't |
| * configure the PLX bridge properly. Oh well... Simply mimic |
| * the EISA config file to sort it out. */ |
| |
| /* EISA REG1: Assert DecChip 21040 HW Reset */ |
| outb (ER1_IAM | 1, EISA_REG1); |
| mdelay (1); |
| |
| /* EISA REG1: Deassert DecChip 21040 HW Reset */ |
| outb (ER1_IAM, EISA_REG1); |
| mdelay (1); |
| |
| /* EISA REG3: R/W Burst Transfer Enable */ |
| outb (ER3_BWE | ER3_BRE, EISA_REG3); |
| |
| /* 32_bit slave/master, Preempt Time=23 bclks, Unlatched Interrupt */ |
| outb (ER0_BSW | ER0_BMW | ER0_EPT | regval, EISA_REG0); |
| #endif |
| irq = de4x5_irq[(regval >> 1) & 0x03]; |
| |
| if (is_DC2114x) { |
| device = ((lp->cfrv & CFRV_RN) < DC2114x_BRK ? DC21142 : DC21143); |
| } |
| lp->chipset = device; |
| lp->bus = EISA; |
| |
| /* Write the PCI Configuration Registers */ |
| outl(PCI_COMMAND_IO | PCI_COMMAND_MASTER, PCI_CFCS); |
| outl(0x00006000, PCI_CFLT); |
| outl(iobase, PCI_CBIO); |
| |
| DevicePresent(dev, EISA_APROM); |
| |
| dev->irq = irq; |
| |
| if (!(status = de4x5_hw_init (dev, iobase, gendev))) { |
| return 0; |
| } |
| |
| free_netdev (dev); |
| release_reg_2: |
| release_region (iobase + DE4X5_EISA_IO_PORTS, DE4X5_EISA_TOTAL_SIZE); |
| release_reg_1: |
| release_region (iobase, DE4X5_EISA_TOTAL_SIZE); |
| |
| return status; |
| } |
| |
| static int __devexit de4x5_eisa_remove (struct device *device) |
| { |
| struct net_device *dev; |
| u_long iobase; |
| |
| dev = dev_get_drvdata(device); |
| iobase = dev->base_addr; |
| |
| unregister_netdev (dev); |
| free_netdev (dev); |
| release_region (iobase + DE4X5_EISA_IO_PORTS, DE4X5_EISA_TOTAL_SIZE); |
| release_region (iobase, DE4X5_EISA_TOTAL_SIZE); |
| |
| return 0; |
| } |
| |
| static struct eisa_device_id de4x5_eisa_ids[] = { |
| { "DEC4250", 0 }, /* 0 is the board name index... */ |
| { "" } |
| }; |
| MODULE_DEVICE_TABLE(eisa, de4x5_eisa_ids); |
| |
| static struct eisa_driver de4x5_eisa_driver = { |
| .id_table = de4x5_eisa_ids, |
| .driver = { |
| .name = "de4x5", |
| .probe = de4x5_eisa_probe, |
| .remove = __devexit_p (de4x5_eisa_remove), |
| } |
| }; |
| MODULE_DEVICE_TABLE(eisa, de4x5_eisa_ids); |
| #endif |
| |
| #ifdef CONFIG_PCI |
| |
| /* |
| ** This function searches the current bus (which is >0) for a DECchip with an |
| ** SROM, so that in multiport cards that have one SROM shared between multiple |
| ** DECchips, we can find the base SROM irrespective of the BIOS scan direction. |
| ** For single port cards this is a time waster... |
| */ |
| static void __devinit |
| srom_search(struct net_device *dev, struct pci_dev *pdev) |
| { |
| u_char pb; |
| u_short vendor, status; |
| u_int irq = 0, device; |
| u_long iobase = 0; /* Clear upper 32 bits in Alphas */ |
| int i, j; |
| struct de4x5_private *lp = netdev_priv(dev); |
| struct list_head *walk; |
| |
| list_for_each(walk, &pdev->bus_list) { |
| struct pci_dev *this_dev = pci_dev_b(walk); |
| |
| /* Skip the pci_bus list entry */ |
| if (list_entry(walk, struct pci_bus, devices) == pdev->bus) continue; |
| |
| vendor = this_dev->vendor; |
| device = this_dev->device << 8; |
| if (!(is_DC21040 || is_DC21041 || is_DC21140 || is_DC2114x)) continue; |
| |
| /* Get the chip configuration revision register */ |
| pb = this_dev->bus->number; |
| |
| /* Set the device number information */ |
| lp->device = PCI_SLOT(this_dev->devfn); |
| lp->bus_num = pb; |
| |
| /* Set the chipset information */ |
| if (is_DC2114x) { |
| device = ((this_dev->revision & CFRV_RN) < DC2114x_BRK |
| ? DC21142 : DC21143); |
| } |
| lp->chipset = device; |
| |
| /* Get the board I/O address (64 bits on sparc64) */ |
| iobase = pci_resource_start(this_dev, 0); |
| |
| /* Fetch the IRQ to be used */ |
| irq = this_dev->irq; |
| if ((irq == 0) || (irq == 0xff) || ((int)irq == -1)) continue; |
| |
| /* Check if I/O accesses are enabled */ |
| pci_read_config_word(this_dev, PCI_COMMAND, &status); |
| if (!(status & PCI_COMMAND_IO)) continue; |
| |
| /* Search for a valid SROM attached to this DECchip */ |
| DevicePresent(dev, DE4X5_APROM); |
| for (j=0, i=0; i<ETH_ALEN; i++) { |
| j += (u_char) *((u_char *)&lp->srom + SROM_HWADD + i); |
| } |
| if (j != 0 && j != 6 * 0xff) { |
| last.chipset = device; |
| last.bus = pb; |
| last.irq = irq; |
| for (i=0; i<ETH_ALEN; i++) { |
| last.addr[i] = (u_char)*((u_char *)&lp->srom + SROM_HWADD + i); |
| } |
| return; |
| } |
| } |
| } |
| |
| /* |
| ** PCI bus I/O device probe |
| ** NB: PCI I/O accesses and Bus Mastering are enabled by the PCI BIOS, not |
| ** the driver. Some PCI BIOS's, pre V2.1, need the slot + features to be |
| ** enabled by the user first in the set up utility. Hence we just check for |
| ** enabled features and silently ignore the card if they're not. |
| ** |
| ** STOP PRESS: Some BIOS's __require__ the driver to enable the bus mastering |
| ** bit. Here, check for I/O accesses and then set BM. If you put the card in |
| ** a non BM slot, you're on your own (and complain to the PC vendor that your |
| ** PC doesn't conform to the PCI standard)! |
| ** |
| ** This function is only compatible with the *latest* 2.1.x kernels. For 2.0.x |
| ** kernels use the V0.535[n] drivers. |
| */ |
| |
| static int __devinit de4x5_pci_probe (struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| u_char pb, pbus = 0, dev_num, dnum = 0, timer; |
| u_short vendor, status; |
| u_int irq = 0, device; |
| u_long iobase = 0; /* Clear upper 32 bits in Alphas */ |
| int error; |
| struct net_device *dev; |
| struct de4x5_private *lp; |
| |
| dev_num = PCI_SLOT(pdev->devfn); |
| pb = pdev->bus->number; |
| |
| if (io) { /* probe a single PCI device */ |
| pbus = (u_short)(io >> 8); |
| dnum = (u_short)(io & 0xff); |
| if ((pbus != pb) || (dnum != dev_num)) |
| return -ENODEV; |
| } |
| |
| vendor = pdev->vendor; |
| device = pdev->device << 8; |
| if (!(is_DC21040 || is_DC21041 || is_DC21140 || is_DC2114x)) |
| return -ENODEV; |
| |
| /* Ok, the device seems to be for us. */ |
| if ((error = pci_enable_device (pdev))) |
| return error; |
| |
| if (!(dev = alloc_etherdev (sizeof (struct de4x5_private)))) { |
| error = -ENOMEM; |
| goto disable_dev; |
| } |
| |
| lp = netdev_priv(dev); |
| lp->bus = PCI; |
| lp->bus_num = 0; |
| |
| /* Search for an SROM on this bus */ |
| if (lp->bus_num != pb) { |
| lp->bus_num = pb; |
| srom_search(dev, pdev); |
| } |
| |
| /* Get the chip configuration revision register */ |
| lp->cfrv = pdev->revision; |
| |
| /* Set the device number information */ |
| lp->device = dev_num; |
| lp->bus_num = pb; |
| |
| /* Set the chipset information */ |
| if (is_DC2114x) { |
| device = ((lp->cfrv & CFRV_RN) < DC2114x_BRK ? DC21142 : DC21143); |
| } |
| lp->chipset = device; |
| |
| /* Get the board I/O address (64 bits on sparc64) */ |
| iobase = pci_resource_start(pdev, 0); |
| |
| /* Fetch the IRQ to be used */ |
| irq = pdev->irq; |
| if ((irq == 0) || (irq == 0xff) || ((int)irq == -1)) { |
| error = -ENODEV; |
| goto free_dev; |
| } |
| |
| /* Check if I/O accesses and Bus Mastering are enabled */ |
| pci_read_config_word(pdev, PCI_COMMAND, &status); |
| #ifdef __powerpc__ |
| if (!(status & PCI_COMMAND_IO)) { |
| status |= PCI_COMMAND_IO; |
| pci_write_config_word(pdev, PCI_COMMAND, status); |
| pci_read_config_word(pdev, PCI_COMMAND, &status); |
| } |
| #endif /* __powerpc__ */ |
| if (!(status & PCI_COMMAND_IO)) { |
| error = -ENODEV; |
| goto free_dev; |
| } |
| |
| if (!(status & PCI_COMMAND_MASTER)) { |
| status |= PCI_COMMAND_MASTER; |
| pci_write_config_word(pdev, PCI_COMMAND, status); |
| pci_read_config_word(pdev, PCI_COMMAND, &status); |
| } |
| if (!(status & PCI_COMMAND_MASTER)) { |
| error = -ENODEV; |
| goto free_dev; |
| } |
| |
| /* Check the latency timer for values >= 0x60 */ |
| pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &timer); |
| if (timer < 0x60) { |
| pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x60); |
| } |
| |
| DevicePresent(dev, DE4X5_APROM); |
| |
| if (!request_region (iobase, DE4X5_PCI_TOTAL_SIZE, "de4x5")) { |
| error = -EBUSY; |
| goto free_dev; |
| } |
| |
| dev->irq = irq; |
| |
| if ((error = de4x5_hw_init(dev, iobase, &pdev->dev))) { |
| goto release; |
| } |
| |
| return 0; |
| |
| release: |
| release_region (iobase, DE4X5_PCI_TOTAL_SIZE); |
| free_dev: |
| free_netdev (dev); |
| disable_dev: |
| pci_disable_device (pdev); |
| return error; |
| } |
| |
| static void __devexit de4x5_pci_remove (struct pci_dev *pdev) |
| { |
| struct net_device *dev; |
| u_long iobase; |
| |
| dev = dev_get_drvdata(&pdev->dev); |
| iobase = dev->base_addr; |
| |
| unregister_netdev (dev); |
| free_netdev (dev); |
| release_region (iobase, DE4X5_PCI_TOTAL_SIZE); |
| pci_disable_device (pdev); |
| } |
| |
| static struct pci_device_id de4x5_pci_tbl[] = { |
| { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
| { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_PLUS, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 }, |
| { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_FAST, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 }, |
| { PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21142, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 }, |
| { }, |
| }; |
| |
| static struct pci_driver de4x5_pci_driver = { |
| .name = "de4x5", |
| .id_table = de4x5_pci_tbl, |
| .probe = de4x5_pci_probe, |
| .remove = __devexit_p (de4x5_pci_remove), |
| }; |
| |
| #endif |
| |
| /* |
| ** Auto configure the media here rather than setting the port at compile |
| ** time. This routine is called by de4x5_init() and when a loss of media is |
| ** detected (excessive collisions, loss of carrier, no carrier or link fail |
| ** [TP] or no recent receive activity) to check whether the user has been |
| ** sneaky and changed the port on us. |
| */ |
| static int |
| autoconf_media(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| |
| disable_ast(dev); |
| |
| lp->c_media = AUTO; /* Bogus last media */ |
| inl(DE4X5_MFC); /* Zero the lost frames counter */ |
| lp->media = INIT; |
| lp->tcount = 0; |
| |
| de4x5_ast(dev); |
| |
| return lp->media; |
| } |
| |
| /* |
| ** Autoconfigure the media when using the DC21040. AUI cannot be distinguished |
| ** from BNC as the port has a jumper to set thick or thin wire. When set for |
| ** BNC, the BNC port will indicate activity if it's not terminated correctly. |
| ** The only way to test for that is to place a loopback packet onto the |
| ** network and watch for errors. Since we're messing with the interrupt mask |
| ** register, disable the board interrupts and do not allow any more packets to |
| ** be queued to the hardware. Re-enable everything only when the media is |
| ** found. |
| ** I may have to "age out" locally queued packets so that the higher layer |
| ** timeouts don't effectively duplicate packets on the network. |
| */ |
| static int |
| dc21040_autoconf(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| int next_tick = DE4X5_AUTOSENSE_MS; |
| s32 imr; |
| |
| switch (lp->media) { |
| case INIT: |
| DISABLE_IRQs; |
| lp->tx_enable = false; |
| lp->timeout = -1; |
| de4x5_save_skbs(dev); |
| if ((lp->autosense == AUTO) || (lp->autosense == TP)) { |
| lp->media = TP; |
| } else if ((lp->autosense == BNC) || (lp->autosense == AUI) || (lp->autosense == BNC_AUI)) { |
| lp->media = BNC_AUI; |
| } else if (lp->autosense == EXT_SIA) { |
| lp->media = EXT_SIA; |
| } else { |
| lp->media = NC; |
| } |
| lp->local_state = 0; |
| next_tick = dc21040_autoconf(dev); |
| break; |
| |
| case TP: |
| next_tick = dc21040_state(dev, 0x8f01, 0xffff, 0x0000, 3000, BNC_AUI, |
| TP_SUSPECT, test_tp); |
| break; |
| |
| case TP_SUSPECT: |
| next_tick = de4x5_suspect_state(dev, 1000, TP, test_tp, dc21040_autoconf); |
| break; |
| |
| case BNC: |
| case AUI: |
| case BNC_AUI: |
| next_tick = dc21040_state(dev, 0x8f09, 0x0705, 0x0006, 3000, EXT_SIA, |
| BNC_AUI_SUSPECT, ping_media); |
| break; |
| |
| case BNC_AUI_SUSPECT: |
| next_tick = de4x5_suspect_state(dev, 1000, BNC_AUI, ping_media, dc21040_autoconf); |
| break; |
| |
| case EXT_SIA: |
| next_tick = dc21040_state(dev, 0x3041, 0x0000, 0x0006, 3000, |
| NC, EXT_SIA_SUSPECT, ping_media); |
| break; |
| |
| case EXT_SIA_SUSPECT: |
| next_tick = de4x5_suspect_state(dev, 1000, EXT_SIA, ping_media, dc21040_autoconf); |
| break; |
| |
| case NC: |
| /* default to TP for all */ |
| reset_init_sia(dev, 0x8f01, 0xffff, 0x0000); |
| if (lp->media != lp->c_media) { |
| de4x5_dbg_media(dev); |
| lp->c_media = lp->media; |
| } |
| lp->media = INIT; |
| lp->tx_enable = false; |
| break; |
| } |
| |
| return next_tick; |
| } |
| |
| static int |
| dc21040_state(struct net_device *dev, int csr13, int csr14, int csr15, int timeout, |
| int next_state, int suspect_state, |
| int (*fn)(struct net_device *, int)) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| int next_tick = DE4X5_AUTOSENSE_MS; |
| int linkBad; |
| |
| switch (lp->local_state) { |
| case 0: |
| reset_init_sia(dev, csr13, csr14, csr15); |
| lp->local_state++; |
| next_tick = 500; |
| break; |
| |
| case 1: |
| if (!lp->tx_enable) { |
| linkBad = fn(dev, timeout); |
| if (linkBad < 0) { |
| next_tick = linkBad & ~TIMER_CB; |
| } else { |
| if (linkBad && (lp->autosense == AUTO)) { |
| lp->local_state = 0; |
| lp->media = next_state; |
| } else { |
| de4x5_init_connection(dev); |
| } |
| } |
| } else if (!lp->linkOK && (lp->autosense == AUTO)) { |
| lp->media = suspect_state; |
| next_tick = 3000; |
| } |
| break; |
| } |
| |
| return next_tick; |
| } |
| |
| static int |
| de4x5_suspect_state(struct net_device *dev, int timeout, int prev_state, |
| int (*fn)(struct net_device *, int), |
| int (*asfn)(struct net_device *)) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| int next_tick = DE4X5_AUTOSENSE_MS; |
| int linkBad; |
| |
| switch (lp->local_state) { |
| case 1: |
| if (lp->linkOK) { |
| lp->media = prev_state; |
| } else { |
| lp->local_state++; |
| next_tick = asfn(dev); |
| } |
| break; |
| |
| case 2: |
| linkBad = fn(dev, timeout); |
| if (linkBad < 0) { |
| next_tick = linkBad & ~TIMER_CB; |
| } else if (!linkBad) { |
| lp->local_state--; |
| lp->media = prev_state; |
| } else { |
| lp->media = INIT; |
| lp->tcount++; |
| } |
| } |
| |
| return next_tick; |
| } |
| |
| /* |
| ** Autoconfigure the media when using the DC21041. AUI needs to be tested |
| ** before BNC, because the BNC port will indicate activity if it's not |
| ** terminated correctly. The only way to test for that is to place a loopback |
| ** packet onto the network and watch for errors. Since we're messing with |
| ** the interrupt mask register, disable the board interrupts and do not allow |
| ** any more packets to be queued to the hardware. Re-enable everything only |
| ** when the media is found. |
| */ |
| static int |
| dc21041_autoconf(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| s32 sts, irqs, irq_mask, imr, omr; |
| int next_tick = DE4X5_AUTOSENSE_MS; |
| |
| switch (lp->media) { |
| case INIT: |
| DISABLE_IRQs; |
| lp->tx_enable = false; |
| lp->timeout = -1; |
| de4x5_save_skbs(dev); /* Save non transmitted skb's */ |
| if ((lp->autosense == AUTO) || (lp->autosense == TP_NW)) { |
| lp->media = TP; /* On chip auto negotiation is broken */ |
| } else if (lp->autosense == TP) { |
| lp->media = TP; |
| } else if (lp->autosense == BNC) { |
| lp->media = BNC; |
| } else if (lp->autosense == AUI) { |
| lp->media = AUI; |
| } else { |
| lp->media = NC; |
| } |
| lp->local_state = 0; |
| next_tick = dc21041_autoconf(dev); |
| break; |
| |
| case TP_NW: |
| if (lp->timeout < 0) { |
| omr = inl(DE4X5_OMR);/* Set up full duplex for the autonegotiate */ |
| outl(omr | OMR_FDX, DE4X5_OMR); |
| } |
| irqs = STS_LNF | STS_LNP; |
| irq_mask = IMR_LFM | IMR_LPM; |
| sts = test_media(dev, irqs, irq_mask, 0xef01, 0xffff, 0x0008, 2400); |
| if (sts < 0) { |
| next_tick = sts & ~TIMER_CB; |
| } else { |
| if (sts & STS_LNP) { |
| lp->media = ANS; |
| } else { |
| lp->media = AUI; |
| } |
| next_tick = dc21041_autoconf(dev); |
| } |
| break; |
| |
| case ANS: |
| if (!lp->tx_enable) { |
| irqs = STS_LNP; |
| irq_mask = IMR_LPM; |
| sts = test_ans(dev, irqs, irq_mask, 3000); |
| if (sts < 0) { |
| next_tick = sts & ~TIMER_CB; |
| } else { |
| if (!(sts & STS_LNP) && (lp->autosense == AUTO)) { |
| lp->media = TP; |
| next_tick = dc21041_autoconf(dev); |
| } else { |
| lp->local_state = 1; |
| de4x5_init_connection(dev); |
| } |
| } |
| } else if (!lp->linkOK && (lp->autosense == AUTO)) { |
| lp->media = ANS_SUSPECT; |
| next_tick = 3000; |
| } |
| break; |
| |
| case ANS_SUSPECT: |
| next_tick = de4x5_suspect_state(dev, 1000, ANS, test_tp, dc21041_autoconf); |
| break; |
| |
| case TP: |
| if (!lp->tx_enable) { |
| if (lp->timeout < 0) { |
| omr = inl(DE4X5_OMR); /* Set up half duplex for TP */ |
| outl(omr & ~OMR_FDX, DE4X5_OMR); |
| } |
| irqs = STS_LNF | STS_LNP; |
| irq_mask = IMR_LFM | IMR_LPM; |
| sts = test_media(dev,irqs, irq_mask, 0xef01, 0xff3f, 0x0008, 2400); |
| if (sts < 0) { |
| next_tick = sts & ~TIMER_CB; |
| } else { |
| if (!(sts & STS_LNP) && (lp->autosense == AUTO)) { |
| if (inl(DE4X5_SISR) & SISR_NRA) { |
| lp->media = AUI; /* Non selected port activity */ |
| } else { |
| lp->media = BNC; |
| } |
| next_tick = dc21041_autoconf(dev); |
| } else { |
| lp->local_state = 1; |
| de4x5_init_connection(dev); |
| } |
| } |
| } else if (!lp->linkOK && (lp->autosense == AUTO)) { |
| lp->media = TP_SUSPECT; |
| next_tick = 3000; |
| } |
| break; |
| |
| case TP_SUSPECT: |
| next_tick = de4x5_suspect_state(dev, 1000, TP, test_tp, dc21041_autoconf); |
| break; |
| |
| case AUI: |
| if (!lp->tx_enable) { |
| if (lp->timeout < 0) { |
| omr = inl(DE4X5_OMR); /* Set up half duplex for AUI */ |
| outl(omr & ~OMR_FDX, DE4X5_OMR); |
| } |
| irqs = 0; |
| irq_mask = 0; |
| sts = test_media(dev,irqs, irq_mask, 0xef09, 0xf73d, 0x000e, 1000); |
| if (sts < 0) { |
| next_tick = sts & ~TIMER_CB; |
| } else { |
| if (!(inl(DE4X5_SISR) & SISR_SRA) && (lp->autosense == AUTO)) { |
| lp->media = BNC; |
| next_tick = dc21041_autoconf(dev); |
| } else { |
| lp->local_state = 1; |
| de4x5_init_connection(dev); |
| } |
| } |
| } else if (!lp->linkOK && (lp->autosense == AUTO)) { |
| lp->media = AUI_SUSPECT; |
| next_tick = 3000; |
| } |
| break; |
| |
| case AUI_SUSPECT: |
| next_tick = de4x5_suspect_state(dev, 1000, AUI, ping_media, dc21041_autoconf); |
| break; |
| |
| case BNC: |
| switch (lp->local_state) { |
| case 0: |
| if (lp->timeout < 0) { |
| omr = inl(DE4X5_OMR); /* Set up half duplex for BNC */ |
| outl(omr & ~OMR_FDX, DE4X5_OMR); |
| } |
| irqs = 0; |
| irq_mask = 0; |
| sts = test_media(dev,irqs, irq_mask, 0xef09, 0xf73d, 0x0006, 1000); |
| if (sts < 0) { |
| next_tick = sts & ~TIMER_CB; |
| } else { |
| lp->local_state++; /* Ensure media connected */ |
| next_tick = dc21041_autoconf(dev); |
| } |
| break; |
| |
| case 1: |
| if (!lp->tx_enable) { |
| if ((sts = ping_media(dev, 3000)) < 0) { |
| next_tick = sts & ~TIMER_CB; |
| } else { |
| if (sts) { |
| lp->local_state = 0; |
| lp->media = NC; |
| } else { |
| de4x5_init_connection(dev); |
| } |
| } |
| } else if (!lp->linkOK && (lp->autosense == AUTO)) { |
| lp->media = BNC_SUSPECT; |
| next_tick = 3000; |
| } |
| break; |
| } |
| break; |
| |
| case BNC_SUSPECT: |
| next_tick = de4x5_suspect_state(dev, 1000, BNC, ping_media, dc21041_autoconf); |
| break; |
| |
| case NC: |
| omr = inl(DE4X5_OMR); /* Set up full duplex for the autonegotiate */ |
| outl(omr | OMR_FDX, DE4X5_OMR); |
| reset_init_sia(dev, 0xef01, 0xffff, 0x0008);/* Initialise the SIA */ |
| if (lp->media != lp->c_media) { |
| de4x5_dbg_media(dev); |
| lp->c_media = lp->media; |
| } |
| lp->media = INIT; |
| lp->tx_enable = false; |
| break; |
| } |
| |
| return next_tick; |
| } |
| |
| /* |
| ** Some autonegotiation chips are broken in that they do not return the |
| ** acknowledge bit (anlpa & MII_ANLPA_ACK) in the link partner advertisement |
| ** register, except at the first power up negotiation. |
| */ |
| static int |
| dc21140m_autoconf(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| int ana, anlpa, cap, cr, slnk, sr; |
| int next_tick = DE4X5_AUTOSENSE_MS; |
| u_long imr, omr, iobase = dev->base_addr; |
| |
| switch(lp->media) { |
| case INIT: |
| if (lp->timeout < 0) { |
| DISABLE_IRQs; |
| lp->tx_enable = false; |
| lp->linkOK = 0; |
| de4x5_save_skbs(dev); /* Save non transmitted skb's */ |
| } |
| if ((next_tick = de4x5_reset_phy(dev)) < 0) { |
| next_tick &= ~TIMER_CB; |
| } else { |
| if (lp->useSROM) { |
| if (srom_map_media(dev) < 0) { |
| lp->tcount++; |
| return next_tick; |
| } |
| srom_exec(dev, lp->phy[lp->active].gep); |
| if (lp->infoblock_media == ANS) { |
| ana = lp->phy[lp->active].ana | MII_ANA_CSMA; |
| mii_wr(ana, MII_ANA, lp->phy[lp->active].addr, DE4X5_MII); |
| } |
| } else { |
| lp->tmp = MII_SR_ASSC; /* Fake out the MII speed set */ |
| SET_10Mb; |
| if (lp->autosense == _100Mb) { |
| lp->media = _100Mb; |
| } else if (lp->autosense == _10Mb) { |
| lp->media = _10Mb; |
| } else if ((lp->autosense == AUTO) && |
| ((sr=is_anc_capable(dev)) & MII_SR_ANC)) { |
| ana = (((sr >> 6) & MII_ANA_TAF) | MII_ANA_CSMA); |
| ana &= (lp->fdx ? ~0 : ~MII_ANA_FDAM); |
| mii_wr(ana, MII_ANA, lp->phy[lp->active].addr, DE4X5_MII); |
| lp->media = ANS; |
| } else if (lp->autosense == AUTO) { |
| lp->media = SPD_DET; |
| } else if (is_spd_100(dev) && is_100_up(dev)) { |
| lp->media = _100Mb; |
| } else { |
| lp->media = NC; |
| } |
| } |
| lp->local_state = 0; |
| next_tick = dc21140m_autoconf(dev); |
| } |
| break; |
| |
| case ANS: |
| switch (lp->local_state) { |
| case 0: |
| if (lp->timeout < 0) { |
| mii_wr(MII_CR_ASSE | MII_CR_RAN, MII_CR, lp->phy[lp->active].addr, DE4X5_MII); |
| } |
| cr = test_mii_reg(dev, MII_CR, MII_CR_RAN, false, 500); |
| if (cr < 0) { |
| next_tick = cr & ~TIMER_CB; |
| } else { |
| if (cr) { |
| lp->local_state = 0; |
| lp->media = SPD_DET; |
| } else { |
| lp->local_state++; |
| } |
| next_tick = dc21140m_autoconf(dev); |
| } |
| break; |
| |
| case 1: |
| if ((sr=test_mii_reg(dev, MII_SR, MII_SR_ASSC, true, 2000)) < 0) { |
| next_tick = sr & ~TIMER_CB; |
| } else { |
| lp->media = SPD_DET; |
| lp->local_state = 0; |
| if (sr) { /* Success! */ |
| lp->tmp = MII_SR_ASSC; |
| anlpa = mii_rd(MII_ANLPA, lp->phy[lp->active].addr, DE4X5_MII); |
| ana = mii_rd(MII_ANA, lp->phy[lp->active].addr, DE4X5_MII); |
| if (!(anlpa & MII_ANLPA_RF) && |
| (cap = anlpa & MII_ANLPA_TAF & ana)) { |
| if (cap & MII_ANA_100M) { |
| lp->fdx = (ana & anlpa & MII_ANA_FDAM & MII_ANA_100M) != 0; |
| lp->media = _100Mb; |
| } else if (cap & MII_ANA_10M) { |
| lp->fdx = (ana & anlpa & MII_ANA_FDAM & MII_ANA_10M) != 0; |
| |
| lp->media = _10Mb; |
| } |
| } |
| } /* Auto Negotiation failed to finish */ |
| next_tick = dc21140m_autoconf(dev); |
| } /* Auto Negotiation failed to start */ |
| break; |
| } |
| break; |
| |
| case SPD_DET: /* Choose 10Mb/s or 100Mb/s */ |
| if (lp->timeout < 0) { |
| lp->tmp = (lp->phy[lp->active].id ? MII_SR_LKS : |
| (~gep_rd(dev) & GEP_LNP)); |
| SET_100Mb_PDET; |
| } |
| if ((slnk = test_for_100Mb(dev, 6500)) < 0) { |
| next_tick = slnk & ~TIMER_CB; |
| } else { |
| if (is_spd_100(dev) && is_100_up(dev)) { |
| lp->media = _100Mb; |
| } else if ((!is_spd_100(dev) && (is_10_up(dev) & lp->tmp))) { |
| lp->media = _10Mb; |
| } else { |
| lp->media = NC; |
| } |
| next_tick = dc21140m_autoconf(dev); |
| } |
| break; |
| |
| case _100Mb: /* Set 100Mb/s */ |
| next_tick = 3000; |
| if (!lp->tx_enable) { |
| SET_100Mb; |
| de4x5_init_connection(dev); |
| } else { |
| if (!lp->linkOK && (lp->autosense == AUTO)) { |
| if (!is_100_up(dev) || (!lp->useSROM && !is_spd_100(dev))) { |
| lp->media = INIT; |
| lp->tcount++; |
| next_tick = DE4X5_AUTOSENSE_MS; |
| } |
| } |
| } |
| break; |
| |
| case BNC: |
| case AUI: |
| case _10Mb: /* Set 10Mb/s */ |
| next_tick = 3000; |
| if (!lp->tx_enable) { |
| SET_10Mb; |
| de4x5_init_connection(dev); |
| } else { |
| if (!lp->linkOK && (lp->autosense == AUTO)) { |
| if (!is_10_up(dev) || (!lp->useSROM && is_spd_100(dev))) { |
| lp->media = INIT; |
| lp->tcount++; |
| next_tick = DE4X5_AUTOSENSE_MS; |
| } |
| } |
| } |
| break; |
| |
| case NC: |
| if (lp->media != lp->c_media) { |
| de4x5_dbg_media(dev); |
| lp->c_media = lp->media; |
| } |
| lp->media = INIT; |
| lp->tx_enable = false; |
| break; |
| } |
| |
| return next_tick; |
| } |
| |
| /* |
| ** This routine may be merged into dc21140m_autoconf() sometime as I'm |
| ** changing how I figure out the media - but trying to keep it backwards |
| ** compatible with the de500-xa and de500-aa. |
| ** Whether it's BNC, AUI, SYM or MII is sorted out in the infoblock |
| ** functions and set during de4x5_mac_port() and/or de4x5_reset_phy(). |
| ** This routine just has to figure out whether 10Mb/s or 100Mb/s is |
| ** active. |
| ** When autonegotiation is working, the ANS part searches the SROM for |
| ** the highest common speed (TP) link that both can run and if that can |
| ** be full duplex. That infoblock is executed and then the link speed set. |
| ** |
| ** Only _10Mb and _100Mb are tested here. |
| */ |
| static int |
| dc2114x_autoconf(struct net_device *dev) |
| { |
| struct de4x5_private *lp = netdev_priv(dev); |
| u_long iobase = dev->base_addr; |
| s32 cr, anlpa, ana, cap, irqs, irq_mask, imr, omr, slnk, sr, sts; |
| int next_tick = DE4X5_AUTOSENSE_MS; |
| |
| switch (lp->media) { |
| case INIT: |
| if (lp->timeout < 0) { |
| DISABLE_IRQs; |
| lp->tx_enable = false; |
| lp->linkOK = 0; |
| lp->timeout = -1; |
| de4x5_save_skbs(dev); /* Save non transmitted skb's */ |
| if (lp->params.autosense & ~AUTO) { |
| srom_map_media(dev); /* Fixed media requested */ |
| if (lp->media != lp->params.autosense) { |
| lp->tcount++; |
| lp->media = INIT; |
| return next_tick; |
| } |
| lp->media = INIT; |
| } |
| } |
| if ((next_tick = de4x5_reset_phy(dev)) < 0) { |
| next_tick &= ~TIMER_CB; |
| } else { |
| if (lp->autosense == _100Mb) { |
| lp->media = _100Mb; |
| } else if (lp->autosense == _10Mb) { |
| lp->media = _10Mb; |
| } else if (lp->autosense == TP) { |
| lp->media = TP; |
| } else if (lp->autosense == BNC) { |
| lp->media = BNC; |
| } else if (lp->autosense == AUI) { |
| lp->media = AUI; |
| } else { |
| lp->media = SPD_DET; |
| if ((lp->infoblock_media == ANS) && |
| ((sr=is_anc_capable(dev)) & MII_SR_ANC)) { |
| ana = (((sr >> 6) & MII_ANA_TAF) | MII_ANA_CSMA); |
| ana &= (lp->fdx ? ~0 : ~MII_ANA_FDAM); |
| mii_wr(ana, MII_ANA, lp->phy[lp->active].addr, DE4X5_MII); |
| lp->media = ANS; |
| } |
| } |
| lp->local_state = 0; |
| next_tick = dc2114x_autoconf(dev); |
| } |
| break; |
| |
| case ANS: |
| switch (lp->local_state) { |
| case 0: |
| if (lp->timeout < 0) { |
| mii_wr(MII_CR_ASSE | MII_CR_RAN, MII_CR, lp->phy[lp->active].addr, DE4X5_MII); |
| } |
| cr = test_mii_reg(dev, MII_CR, MII_CR_RAN, false, 500); |
| if (cr < 0) { |
| next_tick |