| /* cs89x0.c: A Crystal Semiconductor CS89[02]0 driver for grub4dos. |
| * |
| * Copyright (C) 2007 Tinybit <tinybit@tom.com> |
| * Copyright (C) 1997-2007 Ken Yap <ken.yap@acm.org> |
| * Copyright (C) 1996-2007 Markus Gutschke <gutschk@math.uni-muenster.de> |
| * Copyright (C) 1988-2007 Russell Nelson, Crynwr Software |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 1 or |
| * version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * 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. |
| */ |
| |
| |
| /* |
| |
| In August 2, 2007, Sascha Sommer <ssommer@suse.de> posted a message to |
| the grub4dos-devel@gna.org mailing list as follows: |
| |
| ------------------------------------------------------------------------------- |
| Subject： [Grub4dos-devel] cs89x0.c driver |
| |
| Hi, |
| |
| the file netboot/cs98x0.txt contains the following statement: |
| |
| "Permission is granted to distribute the enclosed cs89x0.[ch] driver |
| only in conjunction with the Etherboot package. The code is |
| ordinarily distributed under the GPL. |
| |
| Russ Nelson, January 2000" |
| |
| So it looks like these files cannot be distributed with grub4dos. |
| As the Makefile in the netboot dir contains following statements |
| "# Don't build the netboot support by default." |
| I wonder if the cs89x0 driver cannot be removed from the grub4dos |
| distribution. |
| |
| Regards |
| |
| Sascha |
| ------------------------------------------------------------------------------- |
| |
| In reply to the doubts above, I make the following note on the license issue, |
| and claim we are distributing the code under GPL at the very beginning of the |
| file. |
| |
| In etherboot-4.2 which was released in June 5, 1999, the files cs89x0.[ch] |
| have this copyright notice by Markus Gutschke(gutschk@math.uni-muenster.de): |
| |
| =============================================================================== |
| This code is heavily based on the linux driver as written by |
| Russell Nelson <nelson@crynwr.com> and Donald Becker |
| <becker@cesdis.gsfc.nasa.gov> and modified by Mike Cruse |
| <mcruse@cti-ltd.com>. That driver has been released under the |
| conditions of the GNU Public License, thus this one is probably to |
| be considered "derived work". Therefore, there are some legal |
| obstacles in combining this file with etherboot's code, which is |
| released under a BSD style license. |
| |
| So, if you want to actually use this code, you should make sure that |
| you are aware of the legal implications. I release *my* work into |
| the PUBLIC DOMAIN which implies that you can use it either under a |
| BSD style license, or under the conditions of the GPL, or under any |
| other conditions that you like. N.B. this does not apply to the |
| parts that originate from other authors. So, you should probably |
| contact them first and verify if they agree with your intended use. |
| |
| If you contacted all of the above authors and they agreed to give |
| special permission for using this code under the conditions of a BSD |
| style license, then please do let me know. |
| =============================================================================== |
| |
| In a later etherboot release, the copyright notice changed to this: |
| |
| ********************************************************************** |
| Permission is granted to distribute the enclosed cs89x0.[ch] driver |
| only in conjunction with the Etherboot package. The code is |
| ordinarily distributed under the GPL. |
| |
| Russ Nelson, January 2000 |
| ********************************************************************** |
| |
| Don't be confused by the statements. Look at the first statement: |
| |
| Permission is granted to distribute the enclosed cs89x0.[ch] driver |
| only in conjunction with the Etherboot package. |
| |
| It should be understood as: |
| |
| ---------------------------------------------------------------------------- |
| (1) |
| Permission is granted **(to distribute the enclosed cs89x0.[ch] driver |
| only in conjunction with the Etherboot package)**. |
| ---------------------------------------------------------------------------- |
| |
| which means if the driver is distributed only in conjunction with the |
| Etherboot package, then Permission is granted for it. |
| |
| It should not be understood as this: |
| |
| ---------------------------------------------------------------------------- |
| (2) |
| **(Permission is granted to distribute the enclosed cs89x0.[ch] driver)** |
| only in conjunction with the Etherboot package. |
| ---------------------------------------------------------------------------- |
| |
| which means Permission is **only** granted to distribute the driver |
| in conjunction with the Etherboot package, and if it is not distributed in |
| conjunction with Etherboot, then Permission is not granted. |
| |
| The latter understanding of (2) is obviously wrong because it directly |
| conflicts with GPL claimed above in the second statement by Russ Nelson. |
| |
| But if you consider Russ Nelson's announcements as dual license: one license |
| is for how to use this driver in Etherboot: |
| |
| ---------------------------------------------------------------------------- |
| Permission is granted to distribute the enclosed cs89x0.[ch] driver |
| only in conjunction with the Etherboot package. |
| ---------------------------------------------------------------------------- |
| |
| and the other license is for how to use this driver in other packages: |
| |
| -------------------------------------------------------- |
| The code is ordinarily distributed under the GPL. |
| -------------------------------------------------------- |
| |
| then the different understandings between (1) and (2) are not important. |
| This is because, for the dual license, either of the included licenses |
| can be chosen by the recipient. You don't have to accept both licenses |
| simultaneously. |
| |
| We are introducing the driver from Etherboot, so we can legally inherit |
| the GPL from Etherboot. In any case, we can distribute the cs89x0.[ch] |
| driver under GPL. There are no problems. Don't worry. |
| |
| ---- Tinybit <tinybit@tom.com> August 20, 2007 |
| */ |
| |
| /***************************************************************************/ |
| /***************************************************************************/ |
| |
| /* cs89x0.c: A Crystal Semiconductor CS89[02]0 driver for etherboot. */ |
| /* |
| Permission is granted to distribute the enclosed cs89x0.[ch] driver |
| only in conjunction with the Etherboot package. The code is |
| ordinarily distributed under the GPL. |
| |
| Russ Nelson, January 2000 |
| |
| ChangeLog: |
| |
| Thu Dec 6 22:40:00 1996 Markus Gutschke <gutschk@math.uni-muenster.de> |
| |
| * disabled all "advanced" features; this should make the code more reliable |
| |
| * reorganized the reset function |
| |
| * always reset the address port, so that autoprobing will continue working |
| |
| * some cosmetic changes |
| |
| * 2.5 |
| |
| Thu Dec 5 21:00:00 1996 Markus Gutschke <gutschk@math.uni-muenster.de> |
| |
| * tested the code against a CS8900 card |
| |
| * lots of minor bug fixes and adjustments |
| |
| * this is the first release, that actually works! it still requires some |
| changes in order to be more tolerant to different environments |
| |
| * 4 |
| |
| Fri Nov 22 23:00:00 1996 Markus Gutschke <gutschk@math.uni-muenster.de> |
| |
| * read the manuals for the CS89x0 chipsets and took note of all the |
| changes that will be neccessary in order to adapt Russel Nelson's code |
| to the requirements of a BOOT-Prom |
| |
| * 6 |
| |
| Thu Nov 19 22:00:00 1996 Markus Gutschke <gutschk@math.uni-muenster.de> |
| |
| * Synched with Russel Nelson's current code (v1.00) |
| |
| * 2 |
| |
| Thu Nov 12 18:00:00 1996 Markus Gutschke <gutschk@math.uni-muenster.de> |
| |
| * Cleaned up some of the code and tried to optimize the code size. |
| |
| * 1.5 |
| |
| Sun Nov 10 16:30:00 1996 Markus Gutschke <gutschk@math.uni-muenster.de> |
| |
| * First experimental release. This code compiles fine, but I |
| have no way of testing whether it actually works. |
| |
| * I did not (yet) bother to make the code 16bit aware, so for |
| the time being, it will only work for Etherboot/32. |
| |
| * 12 |
| |
| */ |
| |
| #include "etherboot.h" |
| #include "nic.h" |
| #include "cards.h" |
| #include "cs89x0.h" |
| |
| static unsigned short eth_nic_base; |
| static unsigned long eth_mem_start; |
| static unsigned short eth_irq; |
| static unsigned short eth_cs_type; /* one of: CS8900, CS8920, CS8920M */ |
| static unsigned short eth_auto_neg_cnf; |
| static unsigned short eth_adapter_cnf; |
| static unsigned short eth_linectl; |
| |
| /************************************************************************* |
| CS89x0 - specific routines |
| **************************************************************************/ |
| |
| static inline int readreg(int portno) |
| { |
| outw(portno, eth_nic_base + ADD_PORT); |
| return inw(eth_nic_base + DATA_PORT); |
| } |
| |
| static inline void writereg(int portno, int value) |
| { |
| outw(portno, eth_nic_base + ADD_PORT); |
| outw(value, eth_nic_base + DATA_PORT); |
| return; |
| } |
| |
| /************************************************************************* |
| EEPROM access |
| **************************************************************************/ |
| |
| static int wait_eeprom_ready(void) |
| { |
| unsigned long tmo = currticks() + 4*TICKS_PER_SEC; |
| |
| /* check to see if the EEPROM is ready, a timeout is used - |
| just in case EEPROM is ready when SI_BUSY in the |
| PP_SelfST is clear */ |
| while(readreg(PP_SelfST) & SI_BUSY) { |
| if (currticks() >= tmo) |
| return -1; } |
| return 0; |
| } |
| |
| static int get_eeprom_data(int off, int len, unsigned short *buffer) |
| { |
| int i; |
| |
| #ifdef EDEBUG |
| printf("\ncs: EEPROM data from %hX for %hX:",off,len); |
| #endif |
| for (i = 0; i < len; i++) { |
| if (wait_eeprom_ready() < 0) |
| return -1; |
| /* Now send the EEPROM read command and EEPROM location |
| to read */ |
| writereg(PP_EECMD, (off + i) | EEPROM_READ_CMD); |
| if (wait_eeprom_ready() < 0) |
| return -1; |
| buffer[i] = readreg(PP_EEData); |
| #ifdef EDEBUG |
| if (!(i%10)) |
| printf("\ncs: "); |
| printf("%hX ", buffer[i]); |
| #endif |
| } |
| #ifdef EDEBUG |
| putchar('\n'); |
| #endif |
| |
| return(0); |
| } |
| |
| static int get_eeprom_chksum(int off, int len, unsigned short *buffer) |
| { |
| int i, cksum; |
| |
| cksum = 0; |
| for (i = 0; i < len; i++) |
| cksum += buffer[i]; |
| cksum &= 0xffff; |
| if (cksum == 0) |
| return 0; |
| return -1; |
| } |
| |
| /************************************************************************* |
| Activate all of the available media and probe for network |
| **************************************************************************/ |
| |
| static void clrline(void) |
| { |
| int i; |
| |
| putchar('\r'); |
| for (i = 79; i--; ) putchar(' '); |
| printf("\rcs: "); |
| return; |
| } |
| |
| static void control_dc_dc(int on_not_off) |
| { |
| unsigned int selfcontrol; |
| unsigned long tmo = currticks() + TICKS_PER_SEC; |
| |
| /* control the DC to DC convertor in the SelfControl register. */ |
| selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */ |
| if (((eth_adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off) |
| selfcontrol |= HCB1; |
| else |
| selfcontrol &= ~HCB1; |
| writereg(PP_SelfCTL, selfcontrol); |
| |
| /* Wait for the DC/DC converter to power up - 1000ms */ |
| while (currticks() < tmo); |
| |
| return; |
| } |
| |
| static int detect_tp(void) |
| { |
| unsigned long tmo; |
| |
| /* Turn on the chip auto detection of 10BT/ AUI */ |
| |
| clrline(); printf("attempting %s:","TP"); |
| |
| /* If connected to another full duplex capable 10-Base-T card |
| the link pulses seem to be lost when the auto detect bit in |
| the LineCTL is set. To overcome this the auto detect bit |
| will be cleared whilst testing the 10-Base-T interface. |
| This would not be necessary for the sparrow chip but is |
| simpler to do it anyway. */ |
| writereg(PP_LineCTL, eth_linectl &~ AUI_ONLY); |
| control_dc_dc(0); |
| |
| /* Delay for the hardware to work out if the TP cable is |
| present - 150ms */ |
| for (tmo = currticks() + 4; currticks() < tmo; ); |
| |
| if ((readreg(PP_LineST) & LINK_OK) == 0) |
| return 0; |
| |
| if (eth_cs_type != CS8900) { |
| |
| writereg(PP_AutoNegCTL, eth_auto_neg_cnf & AUTO_NEG_MASK); |
| |
| if ((eth_auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) { |
| printf(" negotiating duplex... "); |
| while (readreg(PP_AutoNegST) & AUTO_NEG_BUSY) { |
| if (currticks() - tmo > 40*TICKS_PER_SEC) { |
| printf("time out "); |
| break; |
| } |
| } |
| } |
| if (readreg(PP_AutoNegST) & FDX_ACTIVE) |
| printf("using full duplex"); |
| else |
| printf("using half duplex"); |
| } |
| |
| return A_CNF_MEDIA_10B_T; |
| } |
| |
| /* send a test packet - return true if carrier bits are ok */ |
| static int send_test_pkt(struct nic *nic) |
| { |
| static unsigned char testpacket[] = { 0,0,0,0,0,0, 0,0,0,0,0,0, |
| 0, 46, /*A 46 in network order */ |
| 0, 0, /*DSAP=0 & SSAP=0 fields */ |
| 0xf3,0 /*Control (Test Req+P bit set)*/ }; |
| unsigned long tmo; |
| |
| writereg(PP_LineCTL, readreg(PP_LineCTL) | SERIAL_TX_ON); |
| |
| memcpy(testpacket, nic->node_addr, ETH_ALEN); |
| memcpy(testpacket+ETH_ALEN, nic->node_addr, ETH_ALEN); |
| |
| outw(TX_AFTER_ALL, eth_nic_base + TX_CMD_PORT); |
| outw(ETH_ZLEN, eth_nic_base + TX_LEN_PORT); |
| |
| /* Test to see if the chip has allocated memory for the packet */ |
| for (tmo = currticks() + 2; |
| (readreg(PP_BusST) & READY_FOR_TX_NOW) == 0; ) |
| if (currticks() >= tmo) |
| return(0); |
| |
| /* Write the contents of the packet */ |
| outsw(eth_nic_base + TX_FRAME_PORT, testpacket, |
| (ETH_ZLEN+1)>>1); |
| |
| printf(" sending test packet "); |
| /* wait a couple of timer ticks for packet to be received */ |
| for (tmo = currticks() + 2; currticks() < tmo; ); |
| |
| if ((readreg(PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { |
| printf("succeeded"); |
| return 1; |
| } |
| printf("failed"); |
| return 0; |
| } |
| |
| |
| static int detect_aui(struct nic *nic) |
| { |
| clrline(); printf("attempting %s:","AUI"); |
| control_dc_dc(0); |
| |
| writereg(PP_LineCTL, (eth_linectl & ~AUTO_AUI_10BASET) | AUI_ONLY); |
| |
| if (send_test_pkt(nic)) { |
| return A_CNF_MEDIA_AUI; } |
| else |
| return 0; |
| } |
| |
| static int detect_bnc(struct nic *nic) |
| { |
| clrline(); printf("attempting %s:","BNC"); |
| control_dc_dc(1); |
| |
| writereg(PP_LineCTL, (eth_linectl & ~AUTO_AUI_10BASET) | AUI_ONLY); |
| |
| if (send_test_pkt(nic)) { |
| return A_CNF_MEDIA_10B_2; } |
| else |
| return 0; |
| } |
| |
| /************************************************************************** |
| ETH_RESET - Reset adapter |
| ***************************************************************************/ |
| |
| static void cs89x0_reset(struct nic *nic) |
| { |
| int i; |
| unsigned long reset_tmo; |
| |
| writereg(PP_SelfCTL, readreg(PP_SelfCTL) | POWER_ON_RESET); |
| |
| /* wait for two ticks; that is 2*55ms */ |
| for (reset_tmo = currticks() + 2; currticks() < reset_tmo; ); |
| |
| if (eth_cs_type != CS8900) { |
| /* Hardware problem requires PNP registers to be reconfigured |
| after a reset */ |
| if (eth_irq != 0xFFFF) { |
| outw(PP_CS8920_ISAINT, eth_nic_base + ADD_PORT); |
| outb(eth_irq, eth_nic_base + DATA_PORT); |
| outb(0, eth_nic_base + DATA_PORT + 1); } |
| |
| if (eth_mem_start) { |
| outw(PP_CS8920_ISAMemB, eth_nic_base + ADD_PORT); |
| outb((eth_mem_start >> 8) & 0xff, eth_nic_base + DATA_PORT); |
| outb((eth_mem_start >> 24) & 0xff, eth_nic_base + DATA_PORT + 1); } } |
| |
| /* Wait until the chip is reset */ |
| for (reset_tmo = currticks() + 2; |
| (readreg(PP_SelfST) & INIT_DONE) == 0 && |
| currticks() < reset_tmo; ); |
| |
| /* disable interrupts and memory accesses */ |
| writereg(PP_BusCTL, 0); |
| |
| /* set the ethernet address */ |
| for (i=0; i < ETH_ALEN/2; i++) |
| writereg(PP_IA+i*2, |
| nic->node_addr[i*2] | |
| (nic->node_addr[i*2+1] << 8)); |
| |
| /* receive only error free packets addressed to this card */ |
| writereg(PP_RxCTL, DEF_RX_ACCEPT); |
| |
| /* do not generate any interrupts on receive operations */ |
| writereg(PP_RxCFG, 0); |
| |
| /* do not generate any interrupts on transmit operations */ |
| writereg(PP_TxCFG, 0); |
| |
| /* do not generate any interrupts on buffer operations */ |
| writereg(PP_BufCFG, 0); |
| |
| /* reset address port, so that autoprobing will keep working */ |
| outw(PP_ChipID, eth_nic_base + ADD_PORT); |
| |
| return; |
| } |
| |
| /************************************************************************** |
| ETH_TRANSMIT - Transmit a frame |
| ***************************************************************************/ |
| |
| static void cs89x0_transmit( |
| struct nic *nic, |
| const char *d, /* Destination */ |
| unsigned int t, /* Type */ |
| unsigned int s, /* size */ |
| const char *p) /* Packet */ |
| { |
| unsigned long tmo; |
| int sr; |
| |
| /* does this size have to be rounded??? please, |
| somebody have a look in the specs */ |
| if ((sr = ((s + ETH_HLEN + 1)&~1)) < ETH_ZLEN) |
| sr = ETH_ZLEN; |
| |
| retry: |
| /* initiate a transmit sequence */ |
| outw(TX_AFTER_ALL, eth_nic_base + TX_CMD_PORT); |
| outw(sr, eth_nic_base + TX_LEN_PORT); |
| |
| /* Test to see if the chip has allocated memory for the packet */ |
| if ((readreg(PP_BusST) & READY_FOR_TX_NOW) == 0) { |
| /* Oops... this should not happen! */ |
| printf("cs: unable to send packet; retrying...\n"); |
| for (tmo = currticks() + 5*TICKS_PER_SEC; currticks() < tmo; ); |
| cs89x0_reset(nic); |
| goto retry; } |
| |
| /* Write the contents of the packet */ |
| outsw(eth_nic_base + TX_FRAME_PORT, d, ETH_ALEN/2); |
| outsw(eth_nic_base + TX_FRAME_PORT, nic->node_addr, |
| ETH_ALEN/2); |
| outw(((t >> 8)&0xFF)|(t << 8), eth_nic_base + TX_FRAME_PORT); |
| outsw(eth_nic_base + TX_FRAME_PORT, p, (s+1)/2); |
| for (sr = sr/2 - (s+1)/2 - ETH_ALEN - 1; sr-- > 0; |
| outw(0, eth_nic_base + TX_FRAME_PORT)); |
| |
| /* wait for transfer to succeed */ |
| for (tmo = currticks()+5*TICKS_PER_SEC; |
| (s = readreg(PP_TxEvent)&~0x1F) == 0 && currticks() < tmo;) |
| /* nothing */ ; |
| if ((s & TX_SEND_OK_BITS) != TX_OK) { |
| printf("\ntransmission error %#hX\n", s); |
| } |
| |
| return; |
| } |
| |
| /************************************************************************** |
| ETH_POLL - Wait for a frame |
| ***************************************************************************/ |
| |
| static int cs89x0_poll(struct nic *nic) |
| { |
| int status; |
| |
| status = readreg(PP_RxEvent); |
| |
| if ((status & RX_OK) == 0) |
| return(0); |
| |
| status = inw(eth_nic_base + RX_FRAME_PORT); |
| nic->packetlen = inw(eth_nic_base + RX_FRAME_PORT); |
| insw(eth_nic_base + RX_FRAME_PORT, nic->packet, nic->packetlen >> 1); |
| if (nic->packetlen & 1) |
| nic->packet[nic->packetlen-1] = inw(eth_nic_base + RX_FRAME_PORT); |
| return 1; |
| } |
| |
| static void cs89x0_disable(struct nic *nic) |
| { |
| cs89x0_reset(nic); |
| } |
| |
| /************************************************************************** |
| ETH_PROBE - Look for an adapter |
| ***************************************************************************/ |
| |
| struct nic *cs89x0_probe(struct nic *nic, unsigned short *probe_addrs) |
| { |
| static const unsigned int netcard_portlist[] = { |
| #ifdef CS_SCAN |
| CS_SCAN, |
| #else /* use "conservative" default values for autoprobing */ |
| 0x300,0x320,0x340,0x200,0x220,0x240, |
| 0x260,0x280,0x2a0,0x2c0,0x2e0, |
| /* if that did not work, then be more aggressive */ |
| 0x301,0x321,0x341,0x201,0x221,0x241, |
| 0x261,0x281,0x2a1,0x2c1,0x2e1, |
| #endif |
| 0}; |
| |
| int i, result = -1; |
| unsigned rev_type = 0, ioaddr, ioidx, isa_cnf, cs_revision; |
| unsigned short eeprom_buff[CHKSUM_LEN]; |
| |
| |
| for (ioidx = 0; (ioaddr=netcard_portlist[ioidx++]) != 0; ) { |
| /* if they give us an odd I/O address, then do ONE write to |
| the address port, to get it back to address zero, where we |
| expect to find the EISA signature word. */ |
| if (ioaddr & 1) { |
| ioaddr &= ~1; |
| if ((inw(ioaddr + ADD_PORT) & ADD_MASK) != ADD_SIG) |
| continue; |
| outw(PP_ChipID, ioaddr + ADD_PORT); |
| } |
| |
| if (inw(ioaddr + DATA_PORT) != CHIP_EISA_ID_SIG) |
| continue; |
| eth_nic_base = ioaddr; |
| |
| /* get the chip type */ |
| rev_type = readreg(PRODUCT_ID_ADD); |
| eth_cs_type = rev_type &~ REVISON_BITS; |
| cs_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; |
| |
| printf("\ncs: cs89%c0%s rev %c, base %#hX", |
| eth_cs_type==CS8900?'0':'2', |
| eth_cs_type==CS8920M?"M":"", |
| cs_revision, |
| eth_nic_base); |
| |
| /* First check to see if an EEPROM is attached*/ |
| if ((readreg(PP_SelfST) & EEPROM_PRESENT) == 0) { |
| printf("\ncs: no EEPROM...\n"); |
| outw(PP_ChipID, eth_nic_base + ADD_PORT); |
| continue; } |
| else if (get_eeprom_data(START_EEPROM_DATA,CHKSUM_LEN, |
| eeprom_buff) < 0) { |
| printf("\ncs: EEPROM read failed...\n"); |
| outw(PP_ChipID, eth_nic_base + ADD_PORT); |
| continue; } |
| else if (get_eeprom_chksum(START_EEPROM_DATA,CHKSUM_LEN, |
| eeprom_buff) < 0) { |
| printf("\ncs: EEPROM checksum bad...\n"); |
| outw(PP_ChipID, eth_nic_base + ADD_PORT); |
| continue; } |
| |
| /* get transmission control word but keep the |
| autonegotiation bits */ |
| eth_auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; |
| /* Store adapter configuration */ |
| eth_adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2]; |
| /* Store ISA configuration */ |
| isa_cnf = eeprom_buff[ISA_CNF_OFFSET/2]; |
| |
| /* store the initial memory base address */ |
| eth_mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8; |
| |
| printf("%s%s%s, addr ", |
| (eth_adapter_cnf & A_CNF_10B_T)?", RJ-45":"", |
| (eth_adapter_cnf & A_CNF_AUI)?", AUI":"", |
| (eth_adapter_cnf & A_CNF_10B_2)?", BNC":""); |
| |
| /* If this is a CS8900 then no pnp soft */ |
| if (eth_cs_type != CS8900 && |
| /* Check if the ISA IRQ has been set */ |
| (i = readreg(PP_CS8920_ISAINT) & 0xff, |
| (i != 0 && i < CS8920_NO_INTS))) |
| eth_irq = i; |
| else { |
| i = isa_cnf & INT_NO_MASK; |
| if (eth_cs_type == CS8900) { |
| /* the table that follows is dependent |
| upon how you wired up your cs8900 |
| in your system. The table is the |
| same as the cs8900 engineering demo |
| board. irq_map also depends on the |
| contents of the table. Also see |
| write_irq, which is the reverse |
| mapping of the table below. */ |
| if (i < 4) i = "\012\013\014\005"[i]; |
| else printf("\ncs: BUG: isa_config is %d\n", i); } |
| eth_irq = i; } |
| |
| /* Retrieve and print the ethernet address. */ |
| for (i=0; i<ETH_ALEN; i++) { |
| nic->node_addr[i] = ((unsigned char *)eeprom_buff)[i]; |
| } |
| printf("%!\n", nic->node_addr); |
| |
| /* Set the LineCTL quintuplet based on adapter |
| configuration read from EEPROM */ |
| if ((eth_adapter_cnf & A_CNF_EXTND_10B_2) && |
| (eth_adapter_cnf & A_CNF_LOW_RX_SQUELCH)) |
| eth_linectl = LOW_RX_SQUELCH; |
| else |
| eth_linectl = 0; |
| |
| /* check to make sure that they have the "right" |
| hardware available */ |
| switch(eth_adapter_cnf & A_CNF_MEDIA_TYPE) { |
| case A_CNF_MEDIA_10B_T: result = eth_adapter_cnf & A_CNF_10B_T; |
| break; |
| case A_CNF_MEDIA_AUI: result = eth_adapter_cnf & A_CNF_AUI; |
| break; |
| case A_CNF_MEDIA_10B_2: result = eth_adapter_cnf & A_CNF_10B_2; |
| break; |
| default: result = eth_adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | |
| A_CNF_10B_2); |
| } |
| if (!result) { |
| printf("cs: EEPROM is configured for unavailable media\n"); |
| error: |
| writereg(PP_LineCTL, readreg(PP_LineCTL) & |
| ~(SERIAL_TX_ON | SERIAL_RX_ON)); |
| outw(PP_ChipID, eth_nic_base + ADD_PORT); |
| continue; |
| } |
| |
| /* Initialize the card for probing of the attached media */ |
| cs89x0_reset(nic); |
| |
| /* set the hardware to the configured choice */ |
| switch(eth_adapter_cnf & A_CNF_MEDIA_TYPE) { |
| case A_CNF_MEDIA_10B_T: |
| result = detect_tp(); |
| if (!result) { |
| clrline(); |
| printf("10Base-T (RJ-45%s", |
| ") has no cable\n"); } |
| /* check "ignore missing media" bit */ |
| if (eth_auto_neg_cnf & IMM_BIT) |
| /* Yes! I don't care if I see a link pulse */ |
| result = A_CNF_MEDIA_10B_T; |
| break; |
| case A_CNF_MEDIA_AUI: |
| result = detect_aui(nic); |
| if (!result) { |
| clrline(); |
| printf("10Base-5 (AUI%s", |
| ") has no cable\n"); } |
| /* check "ignore missing media" bit */ |
| if (eth_auto_neg_cnf & IMM_BIT) |
| /* Yes! I don't care if I see a carrrier */ |
| result = A_CNF_MEDIA_AUI; |
| break; |
| case A_CNF_MEDIA_10B_2: |
| result = detect_bnc(nic); |
| if (!result) { |
| clrline(); |
| printf("10Base-2 (BNC%s", |
| ") has no cable\n"); } |
| /* check "ignore missing media" bit */ |
| if (eth_auto_neg_cnf & IMM_BIT) |
| /* Yes! I don't care if I can xmit a packet */ |
| result = A_CNF_MEDIA_10B_2; |
| break; |
| case A_CNF_MEDIA_AUTO: |
| writereg(PP_LineCTL, eth_linectl | AUTO_AUI_10BASET); |
| if (eth_adapter_cnf & A_CNF_10B_T) |
| if ((result = detect_tp()) != 0) |
| break; |
| if (eth_adapter_cnf & A_CNF_AUI) |
| if ((result = detect_aui(nic)) != 0) |
| break; |
| if (eth_adapter_cnf & A_CNF_10B_2) |
| if ((result = detect_bnc(nic)) != 0) |
| break; |
| clrline(); printf("no media detected\n"); |
| goto error; |
| } |
| clrline(); |
| switch(result) { |
| case 0: printf("no network cable attached to configured media\n"); |
| goto error; |
| case A_CNF_MEDIA_10B_T: printf("using 10Base-T (RJ-45)\n"); |
| break; |
| case A_CNF_MEDIA_AUI: printf("using 10Base-5 (AUI)\n"); |
| break; |
| case A_CNF_MEDIA_10B_2: printf("using 10Base-2 (BNC)\n"); |
| break; |
| } |
| |
| /* Turn on both receive and transmit operations */ |
| writereg(PP_LineCTL, readreg(PP_LineCTL) | SERIAL_RX_ON | |
| SERIAL_TX_ON); |
| |
| break; |
| } |
| |
| if (ioaddr == 0) |
| return (0); |
| nic->reset = cs89x0_reset; |
| nic->poll = cs89x0_poll; |
| nic->transmit = cs89x0_transmit; |
| nic->disable = cs89x0_disable; |
| return (nic); |
| } |
| |
| /* |
| * Local variables: |
| * c-basic-offset: 8 |
| * End: |
| */ |
| |