1/* depca.c: A DIGITAL DEPCA & EtherWORKS ethernet driver for linux. 2 3 Written 1994, 1995 by David C. Davies. 4 5 6 Copyright 1994 David C. Davies 7 and 8 United States Government 9 (as represented by the Director, National Security Agency). 10 11 Copyright 1995 Digital Equipment Corporation. 12 13 14 This software may be used and distributed according to the terms of 15 the GNU General Public License, incorporated herein by reference. 16 17 This driver is written for the Digital Equipment Corporation series 18 of DEPCA and EtherWORKS ethernet cards: 19 20 DEPCA (the original) 21 DE100 22 DE101 23 DE200 Turbo 24 DE201 Turbo 25 DE202 Turbo (TP BNC) 26 DE210 27 DE422 (EISA) 28 29 The driver has been tested on DE100, DE200 and DE202 cards in a 30 relatively busy network. The DE422 has been tested a little. 31 32 This driver will NOT work for the DE203, DE204 and DE205 series of 33 cards, since they have a new custom ASIC in place of the AMD LANCE 34 chip. See the 'ewrk3.c' driver in the Linux source tree for running 35 those cards. 36 37 I have benchmarked the driver with a DE100 at 595kB/s to (542kB/s from) 38 a DECstation 5000/200. 39 40 The author may be reached at davies@maniac.ultranet.com 41 42 ========================================================================= 43 44 The driver was originally based on the 'lance.c' driver from Donald 45 Becker which is included with the standard driver distribution for 46 linux. V0.4 is a complete re-write with only the kernel interface 47 remaining from the original code. 48 49 1) Lance.c code in /linux/drivers/net/ 50 2) "Ethernet/IEEE 802.3 Family. 1992 World Network Data Book/Handbook", 51 AMD, 1992 [(800) 222-9323]. 52 3) "Am79C90 CMOS Local Area Network Controller for Ethernet (C-LANCE)", 53 AMD, Pub. #17881, May 1993. 54 4) "Am79C960 PCnet-ISA(tm), Single-Chip Ethernet Controller for ISA", 55 AMD, Pub. #16907, May 1992 56 5) "DEC EtherWORKS LC Ethernet Controller Owners Manual", 57 Digital Equipment corporation, 1990, Pub. #EK-DE100-OM.003 58 6) "DEC EtherWORKS Turbo Ethernet Controller Owners Manual", 59 Digital Equipment corporation, 1990, Pub. #EK-DE200-OM.003 60 7) "DEPCA Hardware Reference Manual", Pub. #EK-DEPCA-PR 61 Digital Equipment Corporation, 1989 62 8) "DEC EtherWORKS Turbo_(TP BNC) Ethernet Controller Owners Manual", 63 Digital Equipment corporation, 1991, Pub. #EK-DE202-OM.001 64 65 66 Peter Bauer's depca.c (V0.5) was referred to when debugging V0.1 of this 67 driver. 68 69 The original DEPCA card requires that the ethernet ROM address counter 70 be enabled to count and has an 8 bit NICSR. The ROM counter enabling is 71 only done when a 0x08 is read as the first address octet (to minimise 72 the chances of writing over some other hardware's I/O register). The 73 NICSR accesses have been changed to byte accesses for all the cards 74 supported by this driver, since there is only one useful bit in the MSB 75 (remote boot timeout) and it is not used. Also, there is a maximum of 76 only 48kB network RAM for this card. My thanks to Torbjorn Lindh for 77 help debugging all this (and holding my feet to the fire until I got it 78 right). 79 80 The DE200 series boards have on-board 64kB RAM for use as a shared 81 memory network buffer. Only the DE100 cards make use of a 2kB buffer 82 mode which has not been implemented in this driver (only the 32kB and 83 64kB modes are supported [16kB/48kB for the original DEPCA]). 84 85 At the most only 2 DEPCA cards can be supported on the ISA bus because 86 there is only provision for two I/O base addresses on each card (0x300 87 and 0x200). The I/O address is detected by searching for a byte sequence 88 in the Ethernet station address PROM at the expected I/O address for the 89 Ethernet PROM. The shared memory base address is 'autoprobed' by 90 looking for the self test PROM and detecting the card name. When a 91 second DEPCA is detected, information is placed in the base_addr 92 variable of the next device structure (which is created if necessary), 93 thus enabling ethif_probe initialization for the device. More than 2 94 EISA cards can be supported, but care will be needed assigning the 95 shared memory to ensure that each slot has the correct IRQ, I/O address 96 and shared memory address assigned. 97 98 ************************************************************************ 99 100 NOTE: If you are using two ISA DEPCAs, it is important that you assign 101 the base memory addresses correctly. The driver autoprobes I/O 0x300 102 then 0x200. The base memory address for the first device must be less 103 than that of the second so that the auto probe will correctly assign the 104 I/O and memory addresses on the same card. I can't think of a way to do 105 this unambiguously at the moment, since there is nothing on the cards to 106 tie I/O and memory information together. 107 108 I am unable to test 2 cards together for now, so this code is 109 unchecked. All reports, good or bad, are welcome. 110 111 ************************************************************************ 112 113 The board IRQ setting must be at an unused IRQ which is auto-probed 114 using Donald Becker's autoprobe routines. DEPCA and DE100 board IRQs are 115 {2,3,4,5,7}, whereas the DE200 is at {5,9,10,11,15}. Note that IRQ2 is 116 really IRQ9 in machines with 16 IRQ lines. 117 118 No 16MB memory limitation should exist with this driver as DMA is not 119 used and the common memory area is in low memory on the network card (my 120 current system has 20MB and I've not had problems yet). 121 122 The ability to load this driver as a loadable module has been added. To 123 utilise this ability, you have to do <8 things: 124 125 0) have a copy of the loadable modules code installed on your system. 126 1) copy depca.c from the /linux/drivers/net directory to your favourite 127 temporary directory. 128 2) if you wish, edit the source code near line 1530 to reflect the I/O 129 address and IRQ you're using (see also 5). 130 3) compile depca.c, but include -DMODULE in the command line to ensure 131 that the correct bits are compiled (see end of source code). 132 4) if you are wanting to add a new card, goto 5. Otherwise, recompile a 133 kernel with the depca configuration turned off and reboot. 134 5) insmod depca.o [irq=7] [io=0x200] [mem=0xd0000] [adapter_name=DE100] 135 [Alan Cox: Changed the code to allow command line irq/io assignments] 136 [Dave Davies: Changed the code to allow command line mem/name 137 assignments] 138 6) run the net startup bits for your eth?? interface manually 139 (usually /etc/rc.inet[12] at boot time). 140 7) enjoy! 141 142 Note that autoprobing is not allowed in loadable modules - the system is 143 already up and running and you're messing with interrupts. 144 145 To unload a module, turn off the associated interface 146 'ifconfig eth?? down' then 'rmmod depca'. 147 148 To assign a base memory address for the shared memory when running as a 149 loadable module, see 5 above. To include the adapter name (if you have 150 no PROM but know the card name) also see 5 above. Note that this last 151 option will not work with kernel built-in depca's. 152 153 The shared memory assignment for a loadable module makes sense to avoid 154 the 'memory autoprobe' picking the wrong shared memory (for the case of 155 2 depca's in a PC). 156 157 ************************************************************************ 158 Support for MCA EtherWORKS cards added 11-3-98. 159 Verified to work with up to 2 DE212 cards in a system (although not 160 fully stress-tested). 161 162 Currently known bugs/limitations: 163 164 Note: with the MCA stuff as a module, it trusts the MCA configuration, 165 not the command line for IRQ and memory address. You can 166 specify them if you want, but it will throw your values out. 167 You still have to pass the IO address it was configured as 168 though. 169 170 ************************************************************************ 171 TO DO: 172 ------ 173 174 175 Revision History 176 ---------------- 177 178 Version Date Description 179 180 0.1 25-jan-94 Initial writing. 181 0.2 27-jan-94 Added LANCE TX hardware buffer chaining. 182 0.3 1-feb-94 Added multiple DEPCA support. 183 0.31 4-feb-94 Added DE202 recognition. 184 0.32 19-feb-94 Tidy up. Improve multi-DEPCA support. 185 0.33 25-feb-94 Fix DEPCA ethernet ROM counter enable. 186 Add jabber packet fix from murf@perftech.com 187 and becker@super.org 188 0.34 7-mar-94 Fix DEPCA max network memory RAM & NICSR access. 189 0.35 8-mar-94 Added DE201 recognition. Tidied up. 190 0.351 30-apr-94 Added EISA support. Added DE422 recognition. 191 0.36 16-may-94 DE422 fix released. 192 0.37 22-jul-94 Added MODULE support 193 0.38 15-aug-94 Added DBR ROM switch in depca_close(). 194 Multi DEPCA bug fix. 195 0.38axp 15-sep-94 Special version for Alpha AXP Linux V1.0. 196 0.381 12-dec-94 Added DE101 recognition, fix multicast bug. 197 0.382 9-feb-95 Fix recognition bug reported by <bkm@star.rl.ac.uk>. 198 0.383 22-feb-95 Fix for conflict with VESA SCSI reported by 199 <stromain@alf.dec.com> 200 0.384 17-mar-95 Fix a ring full bug reported by <bkm@star.rl.ac.uk> 201 0.385 3-apr-95 Fix a recognition bug reported by 202 <ryan.niemi@lastfrontier.com> 203 0.386 21-apr-95 Fix the last fix...sorry, must be galloping senility 204 0.40 25-May-95 Rewrite for portability & updated. 205 ALPHA support from <jestabro@amt.tay1.dec.com> 206 0.41 26-Jun-95 Added verify_area() calls in depca_ioctl() from 207 suggestion by <heiko@colossus.escape.de> 208 0.42 27-Dec-95 Add 'mem' shared memory assignment for loadable 209 modules. 210 Add 'adapter_name' for loadable modules when no PROM. 211 Both above from a suggestion by 212 <pchen@woodruffs121.residence.gatech.edu>. 213 Add new multicasting code. 214 0.421 22-Apr-96 Fix alloc_device() bug <jari@markkus2.fimr.fi> 215 0.422 29-Apr-96 Fix depca_hw_init() bug <jari@markkus2.fimr.fi> 216 0.423 7-Jun-96 Fix module load bug <kmg@barco.be> 217 0.43 16-Aug-96 Update alloc_device() to conform to de4x5.c 218 0.44 1-Sep-97 Fix *_probe() to test check_region() first - bug 219 reported by <mmogilvi@elbert.uccs.edu> 220 0.45 3-Nov-98 Added support for MCA EtherWORKS (DE210/DE212) cards 221 by <tymm@computer.org> 222 0.451 5-Nov-98 Fixed mca stuff cuz I'm a dummy. <tymm@computer.org> 223 0.5 14-Nov-98 Re-spin for 2.1.x kernels. 224 0.51 27-Jun-99 Correct received packet length for CRC from 225 report by <worm@dkik.dk> 226 0.52 16-Oct-00 Fixes for 2.3 io memory accesses 227 Fix show-stopper (ints left masked) in depca_interrupt 228 by <peterd@pnd-pc.demon.co.uk> 229 0.53 12-Jan-01 Release resources on failure, bss tidbits 230 by acme@conectiva.com.br 231 0.54 08-Nov-01 use library crc32 functions 232 by Matt_Domsch@dell.com 233 0.55 01-Mar-03 Use EISA/sysfs framework <maz@wild-wind.fr.eu.org> 234 235 ========================================================================= 236*/ 237 238#include <linux/module.h> 239#include <linux/kernel.h> 240#include <linux/sched.h> 241#include <linux/string.h> 242#include <linux/errno.h> 243#include <linux/ioport.h> 244#include <linux/slab.h> 245#include <linux/interrupt.h> 246#include <linux/delay.h> 247#include <linux/init.h> 248#include <linux/crc32.h> 249#include <linux/netdevice.h> 250#include <linux/etherdevice.h> 251#include <linux/skbuff.h> 252#include <linux/time.h> 253#include <linux/types.h> 254#include <linux/unistd.h> 255#include <linux/ctype.h> 256#include <linux/moduleparam.h> 257#include <linux/platform_device.h> 258#include <linux/bitops.h> 259 260#include <asm/uaccess.h> 261#include <asm/io.h> 262#include <asm/dma.h> 263 264#ifdef CONFIG_MCA 265#include <linux/mca.h> 266#endif 267 268#ifdef CONFIG_EISA 269#include <linux/eisa.h> 270#endif 271 272#include "depca.h" 273 274static char version[] __initdata = "depca.c:v0.53 2001/1/12 davies@maniac.ultranet.com\n"; 275 276#ifdef DEPCA_DEBUG 277static int depca_debug = DEPCA_DEBUG; 278#else 279static int depca_debug = 1; 280#endif 281 282#define DEPCA_NDA 0xffe0 /* No Device Address */ 283 284#define TX_TIMEOUT (1*HZ) 285 286/* 287** Ethernet PROM defines 288*/ 289#define PROBE_LENGTH 32 290#define ETH_PROM_SIG 0xAA5500FFUL 291 292/* 293** Set the number of Tx and Rx buffers. Ensure that the memory requested 294** here is <= to the amount of shared memory set up by the board switches. 295** The number of descriptors MUST BE A POWER OF 2. 296** 297** total_memory = NUM_RX_DESC*(8+RX_BUFF_SZ) + NUM_TX_DESC*(8+TX_BUFF_SZ) 298*/ 299#define NUM_RX_DESC 8 /* Number of RX descriptors */ 300#define NUM_TX_DESC 8 /* Number of TX descriptors */ 301#define RX_BUFF_SZ 1536 /* Buffer size for each Rx buffer */ 302#define TX_BUFF_SZ 1536 /* Buffer size for each Tx buffer */ 303 304/* 305** EISA bus defines 306*/ 307#define DEPCA_EISA_IO_PORTS 0x0c00 /* I/O port base address, slot 0 */ 308 309/* 310** ISA Bus defines 311*/ 312#define DEPCA_RAM_BASE_ADDRESSES {0xc0000,0xd0000,0xe0000,0x00000} 313#define DEPCA_TOTAL_SIZE 0x10 314 315static struct { 316 u_long iobase; 317 struct platform_device *device; 318} depca_io_ports[] = { 319 { 0x300, NULL }, 320 { 0x200, NULL }, 321 { 0 , NULL }, 322}; 323 324/* 325** Name <-> Adapter mapping 326*/ 327#define DEPCA_SIGNATURE {"DEPCA",\ 328 "DE100","DE101",\ 329 "DE200","DE201","DE202",\ 330 "DE210","DE212",\ 331 "DE422",\ 332 ""} 333 334static char* __initdata depca_signature[] = DEPCA_SIGNATURE; 335 336enum depca_type { 337 DEPCA, de100, de101, de200, de201, de202, de210, de212, de422, unknown 338}; 339 340static char depca_string[] = "depca"; 341 342static int depca_device_remove (struct device *device); 343 344#ifdef CONFIG_EISA 345static struct eisa_device_id depca_eisa_ids[] = { 346 { "DEC4220", de422 }, 347 { "" } 348}; 349MODULE_DEVICE_TABLE(eisa, depca_eisa_ids); 350 351static int depca_eisa_probe (struct device *device); 352 353static struct eisa_driver depca_eisa_driver = { 354 .id_table = depca_eisa_ids, 355 .driver = { 356 .name = depca_string, 357 .probe = depca_eisa_probe, 358 .remove = __devexit_p (depca_device_remove) 359 } 360}; 361#endif 362 363#ifdef CONFIG_MCA 364/* 365** Adapter ID for the MCA EtherWORKS DE210/212 adapter 366*/ 367#define DE210_ID 0x628d 368#define DE212_ID 0x6def 369 370static short depca_mca_adapter_ids[] = { 371 DE210_ID, 372 DE212_ID, 373 0x0000 374}; 375 376static char *depca_mca_adapter_name[] = { 377 "DEC EtherWORKS MC Adapter (DE210)", 378 "DEC EtherWORKS MC Adapter (DE212)", 379 NULL 380}; 381 382static enum depca_type depca_mca_adapter_type[] = { 383 de210, 384 de212, 385 0 386}; 387 388static int depca_mca_probe (struct device *); 389 390static struct mca_driver depca_mca_driver = { 391 .id_table = depca_mca_adapter_ids, 392 .driver = { 393 .name = depca_string, 394 .bus = &mca_bus_type, 395 .probe = depca_mca_probe, 396 .remove = __devexit_p(depca_device_remove), 397 }, 398}; 399#endif 400 401static int depca_isa_probe (struct platform_device *); 402 403static int __devexit depca_isa_remove(struct platform_device *pdev) 404{ 405 return depca_device_remove(&pdev->dev); 406} 407 408static struct platform_driver depca_isa_driver = { 409 .probe = depca_isa_probe, 410 .remove = __devexit_p(depca_isa_remove), 411 .driver = { 412 .name = depca_string, 413 }, 414}; 415 416/* 417** Miscellaneous info... 418*/ 419#define DEPCA_STRLEN 16 420 421/* 422** Memory Alignment. Each descriptor is 4 longwords long. To force a 423** particular alignment on the TX descriptor, adjust DESC_SKIP_LEN and 424** DESC_ALIGN. DEPCA_ALIGN aligns the start address of the private memory area 425** and hence the RX descriptor ring's first entry. 426*/ 427#define DEPCA_ALIGN4 ((u_long)4 - 1) /* 1 longword align */ 428#define DEPCA_ALIGN8 ((u_long)8 - 1) /* 2 longword (quadword) align */ 429#define DEPCA_ALIGN DEPCA_ALIGN8 /* Keep the LANCE happy... */ 430 431/* 432** The DEPCA Rx and Tx ring descriptors. 433*/ 434struct depca_rx_desc { 435 volatile s32 base; 436 s16 buf_length; /* This length is negative 2's complement! */ 437 s16 msg_length; /* This length is "normal". */ 438}; 439 440struct depca_tx_desc { 441 volatile s32 base; 442 s16 length; /* This length is negative 2's complement! */ 443 s16 misc; /* Errors and TDR info */ 444}; 445 446#define LA_MASK 0x0000ffff /* LANCE address mask for mapping network RAM 447 to LANCE memory address space */ 448 449/* 450** The Lance initialization block, described in databook, in common memory. 451*/ 452struct depca_init { 453 u16 mode; /* Mode register */ 454 u8 phys_addr[ETH_ALEN]; /* Physical ethernet address */ 455 u8 mcast_table[8]; /* Multicast Hash Table. */ 456 u32 rx_ring; /* Rx ring base pointer & ring length */ 457 u32 tx_ring; /* Tx ring base pointer & ring length */ 458}; 459 460#define DEPCA_PKT_STAT_SZ 16 461#define DEPCA_PKT_BIN_SZ 128 /* Should be >=100 unless you 462 increase DEPCA_PKT_STAT_SZ */ 463struct depca_private { 464 char adapter_name[DEPCA_STRLEN]; /* /proc/ioports string */ 465 enum depca_type adapter; /* Adapter type */ 466 enum { 467 DEPCA_BUS_MCA = 1, 468 DEPCA_BUS_ISA, 469 DEPCA_BUS_EISA, 470 } depca_bus; /* type of bus */ 471 struct depca_init init_block; /* Shadow Initialization block */ 472/* CPU address space fields */ 473 struct depca_rx_desc __iomem *rx_ring; /* Pointer to start of RX descriptor ring */ 474 struct depca_tx_desc __iomem *tx_ring; /* Pointer to start of TX descriptor ring */ 475 void __iomem *rx_buff[NUM_RX_DESC]; /* CPU virt address of sh'd memory buffs */ 476 void __iomem *tx_buff[NUM_TX_DESC]; /* CPU virt address of sh'd memory buffs */ 477 void __iomem *sh_mem; /* CPU mapped virt address of device RAM */ 478 u_long mem_start; /* Bus address of device RAM (before remap) */ 479 u_long mem_len; /* device memory size */ 480/* Device address space fields */ 481 u_long device_ram_start; /* Start of RAM in device addr space */ 482/* Offsets used in both address spaces */ 483 u_long rx_ring_offset; /* Offset from start of RAM to rx_ring */ 484 u_long tx_ring_offset; /* Offset from start of RAM to tx_ring */ 485 u_long buffs_offset; /* LANCE Rx and Tx buffers start address. */ 486/* Kernel-only (not device) fields */ 487 int rx_new, tx_new; /* The next free ring entry */ 488 int rx_old, tx_old; /* The ring entries to be free()ed. */ 489 spinlock_t lock; 490 struct { /* Private stats counters */ 491 u32 bins[DEPCA_PKT_STAT_SZ]; 492 u32 unicast; 493 u32 multicast; 494 u32 broadcast; 495 u32 excessive_collisions; 496 u32 tx_underruns; 497 u32 excessive_underruns; 498 } pktStats; 499 int txRingMask; /* TX ring mask */ 500 int rxRingMask; /* RX ring mask */ 501 s32 rx_rlen; /* log2(rxRingMask+1) for the descriptors */ 502 s32 tx_rlen; /* log2(txRingMask+1) for the descriptors */ 503}; 504 505/* 506** The transmit ring full condition is described by the tx_old and tx_new 507** pointers by: 508** tx_old = tx_new Empty ring 509** tx_old = tx_new+1 Full ring 510** tx_old+txRingMask = tx_new Full ring (wrapped condition) 511*/ 512#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ 513 lp->tx_old+lp->txRingMask-lp->tx_new:\ 514 lp->tx_old -lp->tx_new-1) 515 516/* 517** Public Functions 518*/ 519static int depca_open(struct net_device *dev); 520static netdev_tx_t depca_start_xmit(struct sk_buff *skb, 521 struct net_device *dev); 522static irqreturn_t depca_interrupt(int irq, void *dev_id); 523static int depca_close(struct net_device *dev); 524static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 525static void depca_tx_timeout(struct net_device *dev); 526static void set_multicast_list(struct net_device *dev); 527 528/* 529** Private functions 530*/ 531static void depca_init_ring(struct net_device *dev); 532static int depca_rx(struct net_device *dev); 533static int depca_tx(struct net_device *dev); 534 535static void LoadCSRs(struct net_device *dev); 536static int InitRestartDepca(struct net_device *dev); 537static int DepcaSignature(char *name, u_long paddr); 538static int DevicePresent(u_long ioaddr); 539static int get_hw_addr(struct net_device *dev); 540static void SetMulticastFilter(struct net_device *dev); 541static int load_packet(struct net_device *dev, struct sk_buff *skb); 542static void depca_dbg_open(struct net_device *dev); 543 544static u_char de1xx_irq[] __initdata = { 2, 3, 4, 5, 7, 9, 0 }; 545static u_char de2xx_irq[] __initdata = { 5, 9, 10, 11, 15, 0 }; 546static u_char de422_irq[] __initdata = { 5, 9, 10, 11, 0 }; 547static u_char *depca_irq; 548 549static int irq; 550static int io; 551static char *adapter_name; 552static int mem; /* For loadable module assignment 553 use insmod mem=0x????? .... */ 554module_param (irq, int, 0); 555module_param (io, int, 0); 556module_param (adapter_name, charp, 0); 557module_param (mem, int, 0); 558MODULE_PARM_DESC(irq, "DEPCA IRQ number"); 559MODULE_PARM_DESC(io, "DEPCA I/O base address"); 560MODULE_PARM_DESC(adapter_name, "DEPCA adapter name"); 561MODULE_PARM_DESC(mem, "DEPCA shared memory address"); 562MODULE_LICENSE("GPL"); 563 564/* 565** Miscellaneous defines... 566*/ 567#define STOP_DEPCA \ 568 outw(CSR0, DEPCA_ADDR);\ 569 outw(STOP, DEPCA_DATA) 570 571static const struct net_device_ops depca_netdev_ops = { 572 .ndo_open = depca_open, 573 .ndo_start_xmit = depca_start_xmit, 574 .ndo_stop = depca_close, 575 .ndo_set_multicast_list = set_multicast_list, 576 .ndo_do_ioctl = depca_ioctl, 577 .ndo_tx_timeout = depca_tx_timeout, 578 .ndo_change_mtu = eth_change_mtu, 579 .ndo_set_mac_address = eth_mac_addr, 580 .ndo_validate_addr = eth_validate_addr, 581}; 582 583static int __init depca_hw_init (struct net_device *dev, struct device *device) 584{ 585 struct depca_private *lp; 586 int i, j, offset, netRAM, mem_len, status = 0; 587 s16 nicsr; 588 u_long ioaddr; 589 u_long mem_start; 590 591 /* 592 * We are now supposed to enter this function with the 593 * following fields filled with proper values : 594 * 595 * dev->base_addr 596 * lp->mem_start 597 * lp->depca_bus 598 * lp->adapter 599 * 600 * dev->irq can be set if known from device configuration (on 601 * MCA or EISA) or module option. Otherwise, it will be auto 602 * detected. 603 */ 604 605 ioaddr = dev->base_addr; 606 607 STOP_DEPCA; 608 609 nicsr = inb(DEPCA_NICSR); 610 nicsr = ((nicsr & ~SHE & ~RBE & ~IEN) | IM); 611 outb(nicsr, DEPCA_NICSR); 612 613 if (inw(DEPCA_DATA) != STOP) { 614 return -ENXIO; 615 } 616 617 lp = netdev_priv(dev); 618 mem_start = lp->mem_start; 619 620 if (!mem_start || lp->adapter < DEPCA || lp->adapter >=unknown) 621 return -ENXIO; 622 623 printk("%s: %s at 0x%04lx", 624 dev_name(device), depca_signature[lp->adapter], ioaddr); 625 626 switch (lp->depca_bus) { 627#ifdef CONFIG_MCA 628 case DEPCA_BUS_MCA: 629 printk(" (MCA slot %d)", to_mca_device(device)->slot + 1); 630 break; 631#endif 632 633#ifdef CONFIG_EISA 634 case DEPCA_BUS_EISA: 635 printk(" (EISA slot %d)", to_eisa_device(device)->slot); 636 break; 637#endif 638 639 case DEPCA_BUS_ISA: 640 break; 641 642 default: 643 printk("Unknown DEPCA bus %d\n", lp->depca_bus); 644 return -ENXIO; 645 } 646 647 printk(", h/w address "); 648 status = get_hw_addr(dev); 649 printk("%pM", dev->dev_addr); 650 if (status != 0) { 651 printk(" which has an Ethernet PROM CRC error.\n"); 652 return -ENXIO; 653 } 654 655 /* Set up the maximum amount of network RAM(kB) */ 656 netRAM = ((lp->adapter != DEPCA) ? 64 : 48); 657 if ((nicsr & _128KB) && (lp->adapter == de422)) 658 netRAM = 128; 659 660 /* Shared Memory Base Address */ 661 if (nicsr & BUF) { 662 nicsr &= ~BS; /* DEPCA RAM in top 32k */ 663 netRAM -= 32; 664 665 /* Only EISA/ISA needs start address to be re-computed */ 666 if (lp->depca_bus != DEPCA_BUS_MCA) 667 mem_start += 0x8000; 668 } 669 670 if ((mem_len = (NUM_RX_DESC * (sizeof(struct depca_rx_desc) + RX_BUFF_SZ) + NUM_TX_DESC * (sizeof(struct depca_tx_desc) + TX_BUFF_SZ) + sizeof(struct depca_init))) 671 > (netRAM << 10)) { 672 printk(",\n requests %dkB RAM: only %dkB is available!\n", (mem_len >> 10), netRAM); 673 return -ENXIO; 674 } 675 676 printk(",\n has %dkB RAM at 0x%.5lx", netRAM, mem_start); 677 678 /* Enable the shadow RAM. */ 679 if (lp->adapter != DEPCA) { 680 nicsr |= SHE; 681 outb(nicsr, DEPCA_NICSR); 682 } 683 684 spin_lock_init(&lp->lock); 685 sprintf(lp->adapter_name, "%s (%s)", 686 depca_signature[lp->adapter], dev_name(device)); 687 status = -EBUSY; 688 689 /* Initialisation Block */ 690 if (!request_mem_region (mem_start, mem_len, lp->adapter_name)) { 691 printk(KERN_ERR "depca: cannot request ISA memory, aborting\n"); 692 goto out_priv; 693 } 694 695 status = -EIO; 696 lp->sh_mem = ioremap(mem_start, mem_len); 697 if (lp->sh_mem == NULL) { 698 printk(KERN_ERR "depca: cannot remap ISA memory, aborting\n"); 699 goto out1; 700 } 701 702 lp->mem_start = mem_start; 703 lp->mem_len = mem_len; 704 lp->device_ram_start = mem_start & LA_MASK; 705 706 offset = 0; 707 offset += sizeof(struct depca_init); 708 709 /* Tx & Rx descriptors (aligned to a quadword boundary) */ 710 offset = (offset + DEPCA_ALIGN) & ~DEPCA_ALIGN; 711 lp->rx_ring = (struct depca_rx_desc __iomem *) (lp->sh_mem + offset); 712 lp->rx_ring_offset = offset; 713 714 offset += (sizeof(struct depca_rx_desc) * NUM_RX_DESC); 715 lp->tx_ring = (struct depca_tx_desc __iomem *) (lp->sh_mem + offset); 716 lp->tx_ring_offset = offset; 717 718 offset += (sizeof(struct depca_tx_desc) * NUM_TX_DESC); 719 720 lp->buffs_offset = offset; 721 722 /* Finish initialising the ring information. */ 723 lp->rxRingMask = NUM_RX_DESC - 1; 724 lp->txRingMask = NUM_TX_DESC - 1; 725 726 /* Calculate Tx/Rx RLEN size for the descriptors. */ 727 for (i = 0, j = lp->rxRingMask; j > 0; i++) { 728 j >>= 1; 729 } 730 lp->rx_rlen = (s32) (i << 29); 731 for (i = 0, j = lp->txRingMask; j > 0; i++) { 732 j >>= 1; 733 } 734 lp->tx_rlen = (s32) (i << 29); 735 736 /* Load the initialisation block */ 737 depca_init_ring(dev); 738 739 /* Initialise the control and status registers */ 740 LoadCSRs(dev); 741 742 /* Enable DEPCA board interrupts for autoprobing */ 743 nicsr = ((nicsr & ~IM) | IEN); 744 outb(nicsr, DEPCA_NICSR); 745 746 /* To auto-IRQ we enable the initialization-done and DMA err, 747 interrupts. For now we will always get a DMA error. */ 748 if (dev->irq < 2) { 749 unsigned char irqnum; 750 unsigned long irq_mask, delay; 751 752 irq_mask = probe_irq_on(); 753 754 /* Assign the correct irq list */ 755 switch (lp->adapter) { 756 case DEPCA: 757 case de100: 758 case de101: 759 depca_irq = de1xx_irq; 760 break; 761 case de200: 762 case de201: 763 case de202: 764 case de210: 765 case de212: 766 depca_irq = de2xx_irq; 767 break; 768 case de422: 769 depca_irq = de422_irq; 770 break; 771 772 default: 773 break; /* Not reached */ 774 } 775 776 /* Trigger an initialization just for the interrupt. */ 777 outw(INEA | INIT, DEPCA_DATA); 778 779 delay = jiffies + HZ/50; 780 while (time_before(jiffies, delay)) 781 yield(); 782 783 irqnum = probe_irq_off(irq_mask); 784 785 status = -ENXIO; 786 if (!irqnum) { 787 printk(" and failed to detect IRQ line.\n"); 788 goto out2; 789 } else { 790 for (dev->irq = 0, i = 0; (depca_irq[i]) && (!dev->irq); i++) 791 if (irqnum == depca_irq[i]) { 792 dev->irq = irqnum; 793 printk(" and uses IRQ%d.\n", dev->irq); 794 } 795 796 if (!dev->irq) { 797 printk(" but incorrect IRQ line detected.\n"); 798 goto out2; 799 } 800 } 801 } else { 802 printk(" and assigned IRQ%d.\n", dev->irq); 803 } 804 805 if (depca_debug > 1) { 806 printk(version); 807 } 808 809 /* The DEPCA-specific entries in the device structure. */ 810 dev->netdev_ops = &depca_netdev_ops; 811 dev->watchdog_timeo = TX_TIMEOUT; 812 813 dev->mem_start = 0; 814 815 dev_set_drvdata(device, dev); 816 SET_NETDEV_DEV (dev, device); 817 818 status = register_netdev(dev); 819 if (status == 0) 820 return 0; 821out2: 822 iounmap(lp->sh_mem); 823out1: 824 release_mem_region (mem_start, mem_len); 825out_priv: 826 return status; 827} 828 829 830static int depca_open(struct net_device *dev) 831{ 832 struct depca_private *lp = netdev_priv(dev); 833 u_long ioaddr = dev->base_addr; 834 s16 nicsr; 835 int status = 0; 836 837 STOP_DEPCA; 838 nicsr = inb(DEPCA_NICSR); 839 840 /* Make sure the shadow RAM is enabled */ 841 if (lp->adapter != DEPCA) { 842 nicsr |= SHE; 843 outb(nicsr, DEPCA_NICSR); 844 } 845 846 /* Re-initialize the DEPCA... */ 847 depca_init_ring(dev); 848 LoadCSRs(dev); 849 850 depca_dbg_open(dev); 851 852 if (request_irq(dev->irq, depca_interrupt, 0, lp->adapter_name, dev)) { 853 printk("depca_open(): Requested IRQ%d is busy\n", dev->irq); 854 status = -EAGAIN; 855 } else { 856 857 /* Enable DEPCA board interrupts and turn off LED */ 858 nicsr = ((nicsr & ~IM & ~LED) | IEN); 859 outb(nicsr, DEPCA_NICSR); 860 outw(CSR0, DEPCA_ADDR); 861 862 netif_start_queue(dev); 863 864 status = InitRestartDepca(dev); 865 866 if (depca_debug > 1) { 867 printk("CSR0: 0x%4.4x\n", inw(DEPCA_DATA)); 868 printk("nicsr: 0x%02x\n", inb(DEPCA_NICSR)); 869 } 870 } 871 return status; 872} 873 874/* Initialize the lance Rx and Tx descriptor rings. */ 875static void depca_init_ring(struct net_device *dev) 876{ 877 struct depca_private *lp = netdev_priv(dev); 878 u_int i; 879 u_long offset; 880 881 /* Lock out other processes whilst setting up the hardware */ 882 netif_stop_queue(dev); 883 884 lp->rx_new = lp->tx_new = 0; 885 lp->rx_old = lp->tx_old = 0; 886 887 /* Initialize the base address and length of each buffer in the ring */ 888 for (i = 0; i <= lp->rxRingMask; i++) { 889 offset = lp->buffs_offset + i * RX_BUFF_SZ; 890 writel((lp->device_ram_start + offset) | R_OWN, &lp->rx_ring[i].base); 891 writew(-RX_BUFF_SZ, &lp->rx_ring[i].buf_length); 892 lp->rx_buff[i] = lp->sh_mem + offset; 893 } 894 895 for (i = 0; i <= lp->txRingMask; i++) { 896 offset = lp->buffs_offset + (i + lp->rxRingMask + 1) * TX_BUFF_SZ; 897 writel((lp->device_ram_start + offset) & 0x00ffffff, &lp->tx_ring[i].base); 898 lp->tx_buff[i] = lp->sh_mem + offset; 899 } 900 901 /* Set up the initialization block */ 902 lp->init_block.rx_ring = (lp->device_ram_start + lp->rx_ring_offset) | lp->rx_rlen; 903 lp->init_block.tx_ring = (lp->device_ram_start + lp->tx_ring_offset) | lp->tx_rlen; 904 905 SetMulticastFilter(dev); 906 907 for (i = 0; i < ETH_ALEN; i++) { 908 lp->init_block.phys_addr[i] = dev->dev_addr[i]; 909 } 910 911 lp->init_block.mode = 0x0000; /* Enable the Tx and Rx */ 912} 913 914 915static void depca_tx_timeout(struct net_device *dev) 916{ 917 u_long ioaddr = dev->base_addr; 918 919 printk("%s: transmit timed out, status %04x, resetting.\n", dev->name, inw(DEPCA_DATA)); 920 921 STOP_DEPCA; 922 depca_init_ring(dev); 923 LoadCSRs(dev); 924 dev->trans_start = jiffies; /* prevent tx timeout */ 925 netif_wake_queue(dev); 926 InitRestartDepca(dev); 927} 928 929 930/* 931** Writes a socket buffer to TX descriptor ring and starts transmission 932*/ 933static netdev_tx_t depca_start_xmit(struct sk_buff *skb, 934 struct net_device *dev) 935{ 936 struct depca_private *lp = netdev_priv(dev); 937 u_long ioaddr = dev->base_addr; 938 int status = 0; 939 940 /* Transmitter timeout, serious problems. */ 941 if (skb->len < 1) 942 goto out; 943 944 if (skb_padto(skb, ETH_ZLEN)) 945 goto out; 946 947 netif_stop_queue(dev); 948 949 if (TX_BUFFS_AVAIL) { /* Fill in a Tx ring entry */ 950 status = load_packet(dev, skb); 951 952 if (!status) { 953 /* Trigger an immediate send demand. */ 954 outw(CSR0, DEPCA_ADDR); 955 outw(INEA | TDMD, DEPCA_DATA); 956 957 dev_kfree_skb(skb); 958 } 959 if (TX_BUFFS_AVAIL) 960 netif_start_queue(dev); 961 } else 962 status = NETDEV_TX_LOCKED; 963 964 out: 965 return status; 966} 967 968/* 969** The DEPCA interrupt handler. 970*/ 971static irqreturn_t depca_interrupt(int irq, void *dev_id) 972{ 973 struct net_device *dev = dev_id; 974 struct depca_private *lp; 975 s16 csr0, nicsr; 976 u_long ioaddr; 977 978 if (dev == NULL) { 979 printk("depca_interrupt(): irq %d for unknown device.\n", irq); 980 return IRQ_NONE; 981 } 982 983 lp = netdev_priv(dev); 984 ioaddr = dev->base_addr; 985 986 spin_lock(&lp->lock); 987 988 /* mask the DEPCA board interrupts and turn on the LED */ 989 nicsr = inb(DEPCA_NICSR); 990 nicsr |= (IM | LED); 991 outb(nicsr, DEPCA_NICSR); 992 993 outw(CSR0, DEPCA_ADDR); 994 csr0 = inw(DEPCA_DATA); 995 996 /* Acknowledge all of the current interrupt sources ASAP. */ 997 outw(csr0 & INTE, DEPCA_DATA); 998 999 if (csr0 & RINT) /* Rx interrupt (packet arrived) */ 1000 depca_rx(dev); 1001 1002 if (csr0 & TINT) /* Tx interrupt (packet sent) */ 1003 depca_tx(dev); 1004 1005 /* Any resources available? */ 1006 if ((TX_BUFFS_AVAIL >= 0) && netif_queue_stopped(dev)) { 1007 netif_wake_queue(dev); 1008 } 1009 1010 /* Unmask the DEPCA board interrupts and turn off the LED */ 1011 nicsr = (nicsr & ~IM & ~LED); 1012 outb(nicsr, DEPCA_NICSR); 1013 1014 spin_unlock(&lp->lock); 1015 return IRQ_HANDLED; 1016} 1017 1018/* Called with lp->lock held */ 1019static int depca_rx(struct net_device *dev) 1020{ 1021 struct depca_private *lp = netdev_priv(dev); 1022 int i, entry; 1023 s32 status; 1024 1025 for (entry = lp->rx_new; !(readl(&lp->rx_ring[entry].base) & R_OWN); entry = lp->rx_new) { 1026 status = readl(&lp->rx_ring[entry].base) >> 16; 1027 if (status & R_STP) { /* Remember start of frame */ 1028 lp->rx_old = entry; 1029 } 1030 if (status & R_ENP) { /* Valid frame status */ 1031 if (status & R_ERR) { /* There was an error. */ 1032 dev->stats.rx_errors++; /* Update the error stats. */ 1033 if (status & R_FRAM) 1034 dev->stats.rx_frame_errors++; 1035 if (status & R_OFLO) 1036 dev->stats.rx_over_errors++; 1037 if (status & R_CRC) 1038 dev->stats.rx_crc_errors++; 1039 if (status & R_BUFF) 1040 dev->stats.rx_fifo_errors++; 1041 } else { 1042 short len, pkt_len = readw(&lp->rx_ring[entry].msg_length) - 4; 1043 struct sk_buff *skb; 1044 1045 skb = dev_alloc_skb(pkt_len + 2); 1046 if (skb != NULL) { 1047 unsigned char *buf; 1048 skb_reserve(skb, 2); /* 16 byte align the IP header */ 1049 buf = skb_put(skb, pkt_len); 1050 if (entry < lp->rx_old) { /* Wrapped buffer */ 1051 len = (lp->rxRingMask - lp->rx_old + 1) * RX_BUFF_SZ; 1052 memcpy_fromio(buf, lp->rx_buff[lp->rx_old], len); 1053 memcpy_fromio(buf + len, lp->rx_buff[0], pkt_len - len); 1054 } else { /* Linear buffer */ 1055 memcpy_fromio(buf, lp->rx_buff[lp->rx_old], pkt_len); 1056 } 1057 1058 /* 1059 ** Notify the upper protocol layers that there is another 1060 ** packet to handle 1061 */ 1062 skb->protocol = eth_type_trans(skb, dev); 1063 netif_rx(skb); 1064 1065 /* 1066 ** Update stats 1067 */ 1068 dev->stats.rx_packets++; 1069 dev->stats.rx_bytes += pkt_len; 1070 for (i = 1; i < DEPCA_PKT_STAT_SZ - 1; i++) { 1071 if (pkt_len < (i * DEPCA_PKT_BIN_SZ)) { 1072 lp->pktStats.bins[i]++; 1073 i = DEPCA_PKT_STAT_SZ; 1074 } 1075 } 1076 if (buf[0] & 0x01) { /* Multicast/Broadcast */ 1077 if ((*(s16 *) & buf[0] == -1) && (*(s16 *) & buf[2] == -1) && (*(s16 *) & buf[4] == -1)) { 1078 lp->pktStats.broadcast++; 1079 } else { 1080 lp->pktStats.multicast++; 1081 } 1082 } else if ((*(s16 *) & buf[0] == *(s16 *) & dev->dev_addr[0]) && (*(s16 *) & buf[2] == *(s16 *) & dev->dev_addr[2]) && (*(s16 *) & buf[4] == *(s16 *) & dev->dev_addr[4])) { 1083 lp->pktStats.unicast++; 1084 } 1085 1086 lp->pktStats.bins[0]++; /* Duplicates stats.rx_packets */ 1087 if (lp->pktStats.bins[0] == 0) { /* Reset counters */ 1088 memset((char *) &lp->pktStats, 0, sizeof(lp->pktStats)); 1089 } 1090 } else { 1091 printk("%s: Memory squeeze, deferring packet.\n", dev->name); 1092 dev->stats.rx_dropped++; /* Really, deferred. */ 1093 break; 1094 } 1095 } 1096 /* Change buffer ownership for this last frame, back to the adapter */ 1097 for (; lp->rx_old != entry; lp->rx_old = (++lp->rx_old) & lp->rxRingMask) { 1098 writel(readl(&lp->rx_ring[lp->rx_old].base) | R_OWN, &lp->rx_ring[lp->rx_old].base); 1099 } 1100 writel(readl(&lp->rx_ring[entry].base) | R_OWN, &lp->rx_ring[entry].base); 1101 } 1102 1103 /* 1104 ** Update entry information 1105 */ 1106 lp->rx_new = (++lp->rx_new) & lp->rxRingMask; 1107 } 1108 1109 return 0; 1110} 1111 1112/* 1113** Buffer sent - check for buffer errors. 1114** Called with lp->lock held 1115*/ 1116static int depca_tx(struct net_device *dev) 1117{ 1118 struct depca_private *lp = netdev_priv(dev); 1119 int entry; 1120 s32 status; 1121 u_long ioaddr = dev->base_addr; 1122 1123 for (entry = lp->tx_old; entry != lp->tx_new; entry = lp->tx_old) { 1124 status = readl(&lp->tx_ring[entry].base) >> 16; 1125 1126 if (status < 0) { /* Packet not yet sent! */ 1127 break; 1128 } else if (status & T_ERR) { /* An error occurred. */ 1129 status = readl(&lp->tx_ring[entry].misc); 1130 dev->stats.tx_errors++; 1131 if (status & TMD3_RTRY) 1132 dev->stats.tx_aborted_errors++; 1133 if (status & TMD3_LCAR) 1134 dev->stats.tx_carrier_errors++; 1135 if (status & TMD3_LCOL) 1136 dev->stats.tx_window_errors++; 1137 if (status & TMD3_UFLO) 1138 dev->stats.tx_fifo_errors++; 1139 if (status & (TMD3_BUFF | TMD3_UFLO)) { 1140 /* Trigger an immediate send demand. */ 1141 outw(CSR0, DEPCA_ADDR); 1142 outw(INEA | TDMD, DEPCA_DATA); 1143 } 1144 } else if (status & (T_MORE | T_ONE)) { 1145 dev->stats.collisions++; 1146 } else { 1147 dev->stats.tx_packets++; 1148 } 1149 1150 /* Update all the pointers */ 1151 lp->tx_old = (++lp->tx_old) & lp->txRingMask; 1152 } 1153 1154 return 0; 1155} 1156 1157static int depca_close(struct net_device *dev) 1158{ 1159 struct depca_private *lp = netdev_priv(dev); 1160 s16 nicsr; 1161 u_long ioaddr = dev->base_addr; 1162 1163 netif_stop_queue(dev); 1164 1165 outw(CSR0, DEPCA_ADDR); 1166 1167 if (depca_debug > 1) { 1168 printk("%s: Shutting down ethercard, status was %2.2x.\n", dev->name, inw(DEPCA_DATA)); 1169 } 1170 1171 /* 1172 ** We stop the DEPCA here -- it occasionally polls 1173 ** memory if we don't. 1174 */ 1175 outw(STOP, DEPCA_DATA); 1176 1177 /* 1178 ** Give back the ROM in case the user wants to go to DOS 1179 */ 1180 if (lp->adapter != DEPCA) { 1181 nicsr = inb(DEPCA_NICSR); 1182 nicsr &= ~SHE; 1183 outb(nicsr, DEPCA_NICSR); 1184 } 1185 1186 /* 1187 ** Free the associated irq 1188 */ 1189 free_irq(dev->irq, dev); 1190 return 0; 1191} 1192 1193static void LoadCSRs(struct net_device *dev) 1194{ 1195 struct depca_private *lp = netdev_priv(dev); 1196 u_long ioaddr = dev->base_addr; 1197 1198 outw(CSR1, DEPCA_ADDR); /* initialisation block address LSW */ 1199 outw((u16) lp->device_ram_start, DEPCA_DATA); 1200 outw(CSR2, DEPCA_ADDR); /* initialisation block address MSW */ 1201 outw((u16) (lp->device_ram_start >> 16), DEPCA_DATA); 1202 outw(CSR3, DEPCA_ADDR); /* ALE control */ 1203 outw(ACON, DEPCA_DATA); 1204 1205 outw(CSR0, DEPCA_ADDR); /* Point back to CSR0 */ 1206} 1207 1208static int InitRestartDepca(struct net_device *dev) 1209{ 1210 struct depca_private *lp = netdev_priv(dev); 1211 u_long ioaddr = dev->base_addr; 1212 int i, status = 0; 1213 1214 /* Copy the shadow init_block to shared memory */ 1215 memcpy_toio(lp->sh_mem, &lp->init_block, sizeof(struct depca_init)); 1216 1217 outw(CSR0, DEPCA_ADDR); /* point back to CSR0 */ 1218 outw(INIT, DEPCA_DATA); /* initialize DEPCA */ 1219 1220 /* wait for lance to complete initialisation */ 1221 for (i = 0; (i < 100) && !(inw(DEPCA_DATA) & IDON); i++); 1222 1223 if (i != 100) { 1224 /* clear IDON by writing a "1", enable interrupts and start lance */ 1225 outw(IDON | INEA | STRT, DEPCA_DATA); 1226 if (depca_debug > 2) { 1227 printk("%s: DEPCA open after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA)); 1228 } 1229 } else { 1230 printk("%s: DEPCA unopen after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA)); 1231 status = -1; 1232 } 1233 1234 return status; 1235} 1236 1237/* 1238** Set or clear the multicast filter for this adaptor. 1239*/ 1240static void set_multicast_list(struct net_device *dev) 1241{ 1242 struct depca_private *lp = netdev_priv(dev); 1243 u_long ioaddr = dev->base_addr; 1244 1245 netif_stop_queue(dev); 1246 while (lp->tx_old != lp->tx_new); /* Wait for the ring to empty */ 1247 1248 STOP_DEPCA; /* Temporarily stop the depca. */ 1249 depca_init_ring(dev); /* Initialize the descriptor rings */ 1250 1251 if (dev->flags & IFF_PROMISC) { /* Set promiscuous mode */ 1252 lp->init_block.mode |= PROM; 1253 } else { 1254 SetMulticastFilter(dev); 1255 lp->init_block.mode &= ~PROM; /* Unset promiscuous mode */ 1256 } 1257 1258 LoadCSRs(dev); /* Reload CSR3 */ 1259 InitRestartDepca(dev); /* Resume normal operation. */ 1260 netif_start_queue(dev); /* Unlock the TX ring */ 1261} 1262 1263/* 1264** Calculate the hash code and update the logical address filter 1265** from a list of ethernet multicast addresses. 1266** Big endian crc one liner is mine, all mine, ha ha ha ha! 1267** LANCE calculates its hash codes big endian. 1268*/ 1269static void SetMulticastFilter(struct net_device *dev) 1270{ 1271 struct depca_private *lp = netdev_priv(dev); 1272 struct netdev_hw_addr *ha; 1273 char *addrs; 1274 int i, j, bit, byte; 1275 u16 hashcode; 1276 u32 crc; 1277 1278 if (dev->flags & IFF_ALLMULTI) { /* Set all multicast bits */ 1279 for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { 1280 lp->init_block.mcast_table[i] = (char) 0xff; 1281 } 1282 } else { 1283 for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { /* Clear the multicast table */ 1284 lp->init_block.mcast_table[i] = 0; 1285 } 1286 /* Add multicast addresses */ 1287 netdev_for_each_mc_addr(ha, dev) { 1288 addrs = ha->addr; 1289 if ((*addrs & 0x01) == 1) { /* multicast address? */ 1290 crc = ether_crc(ETH_ALEN, addrs); 1291 hashcode = (crc & 1); /* hashcode is 6 LSb of CRC ... */ 1292 for (j = 0; j < 5; j++) { /* ... in reverse order. */ 1293 hashcode = (hashcode << 1) | ((crc >>= 1) & 1); 1294 } 1295 1296 1297 byte = hashcode >> 3; /* bit[3-5] -> byte in filter */ 1298 bit = 1 << (hashcode & 0x07); /* bit[0-2] -> bit in byte */ 1299 lp->init_block.mcast_table[byte] |= bit; 1300 } 1301 } 1302 } 1303} 1304 1305static int __init depca_common_init (u_long ioaddr, struct net_device **devp) 1306{ 1307 int status = 0; 1308 1309 if (!request_region (ioaddr, DEPCA_TOTAL_SIZE, depca_string)) { 1310 status = -EBUSY; 1311 goto out; 1312 } 1313 1314 if (DevicePresent(ioaddr)) { 1315 status = -ENODEV; 1316 goto out_release; 1317 } 1318 1319 if (!(*devp = alloc_etherdev (sizeof (struct depca_private)))) { 1320 status = -ENOMEM; 1321 goto out_release; 1322 } 1323 1324 return 0; 1325 1326 out_release: 1327 release_region (ioaddr, DEPCA_TOTAL_SIZE); 1328 out: 1329 return status; 1330} 1331 1332#ifdef CONFIG_MCA 1333/* 1334** Microchannel bus I/O device probe 1335*/ 1336static int __init depca_mca_probe(struct device *device) 1337{ 1338 unsigned char pos[2]; 1339 unsigned char where; 1340 unsigned long iobase, mem_start; 1341 int irq, err; 1342 struct mca_device *mdev = to_mca_device (device); 1343 struct net_device *dev; 1344 struct depca_private *lp; 1345 1346 /* 1347 ** Search for the adapter. If an address has been given, search 1348 ** specifically for the card at that address. Otherwise find the 1349 ** first card in the system. 1350 */ 1351 1352 pos[0] = mca_device_read_stored_pos(mdev, 2); 1353 pos[1] = mca_device_read_stored_pos(mdev, 3); 1354 1355 /* 1356 ** IO of card is handled by bits 1 and 2 of pos0. 1357 ** 1358 ** bit2 bit1 IO 1359 ** 0 0 0x2c00 1360 ** 0 1 0x2c10 1361 ** 1 0 0x2c20 1362 ** 1 1 0x2c30 1363 */ 1364 where = (pos[0] & 6) >> 1; 1365 iobase = 0x2c00 + (0x10 * where); 1366 1367 /* 1368 ** Found the adapter we were looking for. Now start setting it up. 1369 ** 1370 ** First work on decoding the IRQ. It's stored in the lower 4 bits 1371 ** of pos1. Bits are as follows (from the ADF file): 1372 ** 1373 ** Bits 1374 ** 3 2 1 0 IRQ 1375 ** -------------------- 1376 ** 0 0 1 0 5 1377 ** 0 0 0 1 9 1378 ** 0 1 0 0 10 1379 ** 1 0 0 0 11 1380 */ 1381 where = pos[1] & 0x0f; 1382 switch (where) { 1383 case 1: 1384 irq = 9; 1385 break; 1386 case 2: 1387 irq = 5; 1388 break; 1389 case 4: 1390 irq = 10; 1391 break; 1392 case 8: 1393 irq = 11; 1394 break; 1395 default: 1396 printk("%s: mca_probe IRQ error. You should never get here (%d).\n", mdev->name, where); 1397 return -EINVAL; 1398 } 1399 1400 /* 1401 ** Shared memory address of adapter is stored in bits 3-5 of pos0. 1402 ** They are mapped as follows: 1403 ** 1404 ** Bit 1405 ** 5 4 3 Memory Addresses 1406 ** 0 0 0 C0000-CFFFF (64K) 1407 ** 1 0 0 C8000-CFFFF (32K) 1408 ** 0 0 1 D0000-DFFFF (64K) 1409 ** 1 0 1 D8000-DFFFF (32K) 1410 ** 0 1 0 E0000-EFFFF (64K) 1411 ** 1 1 0 E8000-EFFFF (32K) 1412 */ 1413 where = (pos[0] & 0x18) >> 3; 1414 mem_start = 0xc0000 + (where * 0x10000); 1415 if (pos[0] & 0x20) { 1416 mem_start += 0x8000; 1417 } 1418 1419 /* claim the slot */ 1420 strncpy(mdev->name, depca_mca_adapter_name[mdev->index], 1421 sizeof(mdev->name)); 1422 mca_device_set_claim(mdev, 1); 1423 1424 /* 1425 ** Get everything allocated and initialized... (almost just 1426 ** like the ISA and EISA probes) 1427 */ 1428 irq = mca_device_transform_irq(mdev, irq); 1429 iobase = mca_device_transform_ioport(mdev, iobase); 1430 1431 if ((err = depca_common_init (iobase, &dev))) 1432 goto out_unclaim; 1433 1434 dev->irq = irq; 1435 dev->base_addr = iobase; 1436 lp = netdev_priv(dev); 1437 lp->depca_bus = DEPCA_BUS_MCA; 1438 lp->adapter = depca_mca_adapter_type[mdev->index]; 1439 lp->mem_start = mem_start; 1440 1441 if ((err = depca_hw_init(dev, device))) 1442 goto out_free; 1443 1444 return 0; 1445 1446 out_free: 1447 free_netdev (dev); 1448 release_region (iobase, DEPCA_TOTAL_SIZE); 1449 out_unclaim: 1450 mca_device_set_claim(mdev, 0); 1451 1452 return err; 1453} 1454#endif 1455 1456/* 1457** ISA bus I/O device probe 1458*/ 1459 1460static void __init depca_platform_probe (void) 1461{ 1462 int i; 1463 struct platform_device *pldev; 1464 1465 for (i = 0; depca_io_ports[i].iobase; i++) { 1466 depca_io_ports[i].device = NULL; 1467 1468 /* if an address has been specified on the command 1469 * line, use it (if valid) */ 1470 if (io && io != depca_io_ports[i].iobase) 1471 continue; 1472 1473 pldev = platform_device_alloc(depca_string, i); 1474 if (!pldev) 1475 continue; 1476 1477 pldev->dev.platform_data = (void *) depca_io_ports[i].iobase; 1478 depca_io_ports[i].device = pldev; 1479 1480 if (platform_device_add(pldev)) { 1481 depca_io_ports[i].device = NULL; 1482 pldev->dev.platform_data = NULL; 1483 platform_device_put(pldev); 1484 continue; 1485 } 1486 1487 if (!pldev->dev.driver) { 1488 /* The driver was not bound to this device, there was 1489 * no hardware at this address. Unregister it, as the 1490 * release fuction will take care of freeing the 1491 * allocated structure */ 1492 1493 depca_io_ports[i].device = NULL; 1494 pldev->dev.platform_data = NULL; 1495 platform_device_unregister (pldev); 1496 } 1497 } 1498} 1499 1500static enum depca_type __init depca_shmem_probe (ulong *mem_start) 1501{ 1502 u_long mem_base[] = DEPCA_RAM_BASE_ADDRESSES; 1503 enum depca_type adapter = unknown; 1504 int i; 1505 1506 for (i = 0; mem_base[i]; i++) { 1507 *mem_start = mem ? mem : mem_base[i]; 1508 adapter = DepcaSignature (adapter_name, *mem_start); 1509 if (adapter != unknown) 1510 break; 1511 } 1512 1513 return adapter; 1514} 1515 1516static int __init depca_isa_probe (struct platform_device *device) 1517{ 1518 struct net_device *dev; 1519 struct depca_private *lp; 1520 u_long ioaddr, mem_start = 0; 1521 enum depca_type adapter = unknown; 1522 int status = 0; 1523 1524 ioaddr = (u_long) device->dev.platform_data; 1525 1526 if ((status = depca_common_init (ioaddr, &dev))) 1527 goto out; 1528 1529 adapter = depca_shmem_probe (&mem_start); 1530 1531 if (adapter == unknown) { 1532 status = -ENODEV; 1533 goto out_free; 1534 } 1535 1536 dev->base_addr = ioaddr; 1537 dev->irq = irq; /* Use whatever value the user gave 1538 * us, and 0 if he didn't. */ 1539 lp = netdev_priv(dev); 1540 lp->depca_bus = DEPCA_BUS_ISA; 1541 lp->adapter = adapter; 1542 lp->mem_start = mem_start; 1543 1544 if ((status = depca_hw_init(dev, &device->dev))) 1545 goto out_free; 1546 1547 return 0; 1548 1549 out_free: 1550 free_netdev (dev); 1551 release_region (ioaddr, DEPCA_TOTAL_SIZE); 1552 out: 1553 return status; 1554} 1555 1556/* 1557** EISA callbacks from sysfs. 1558*/ 1559 1560#ifdef CONFIG_EISA 1561static int __init depca_eisa_probe (struct device *device) 1562{ 1563 enum depca_type adapter = unknown; 1564 struct eisa_device *edev; 1565 struct net_device *dev; 1566 struct depca_private *lp; 1567 u_long ioaddr, mem_start; 1568 int status = 0; 1569 1570 edev = to_eisa_device (device); 1571 ioaddr = edev->base_addr + DEPCA_EISA_IO_PORTS; 1572 1573 if ((status = depca_common_init (ioaddr, &dev))) 1574 goto out; 1575 1576 /* It would have been nice to get card configuration from the 1577 * card. Unfortunately, this register is write-only (shares 1578 * it's address with the ethernet prom)... As we don't parse 1579 * the EISA configuration structures (yet... :-), just rely on 1580 * the ISA probing to sort it out... */ 1581 1582 adapter = depca_shmem_probe (&mem_start); 1583 if (adapter == unknown) { 1584 status = -ENODEV; 1585 goto out_free; 1586 } 1587 1588 dev->base_addr = ioaddr; 1589 dev->irq = irq; 1590 lp = netdev_priv(dev); 1591 lp->depca_bus = DEPCA_BUS_EISA; 1592 lp->adapter = edev->id.driver_data; 1593 lp->mem_start = mem_start; 1594 1595 if ((status = depca_hw_init(dev, device))) 1596 goto out_free; 1597 1598 return 0; 1599 1600 out_free: 1601 free_netdev (dev); 1602 release_region (ioaddr, DEPCA_TOTAL_SIZE); 1603 out: 1604 return status; 1605} 1606#endif 1607 1608static int __devexit depca_device_remove (struct device *device) 1609{ 1610 struct net_device *dev; 1611 struct depca_private *lp; 1612 int bus; 1613 1614 dev = dev_get_drvdata(device); 1615 lp = netdev_priv(dev); 1616 1617 unregister_netdev (dev); 1618 iounmap (lp->sh_mem); 1619 release_mem_region (lp->mem_start, lp->mem_len); 1620 release_region (dev->base_addr, DEPCA_TOTAL_SIZE); 1621 bus = lp->depca_bus; 1622 free_netdev (dev); 1623 1624 return 0; 1625} 1626 1627/* 1628** Look for a particular board name in the on-board Remote Diagnostics 1629** and Boot (readb) ROM. This will also give us a clue to the network RAM 1630** base address. 1631*/ 1632static int __init DepcaSignature(char *name, u_long base_addr) 1633{ 1634 u_int i, j, k; 1635 void __iomem *ptr; 1636 char tmpstr[16]; 1637 u_long prom_addr = base_addr + 0xc000; 1638 u_long mem_addr = base_addr + 0x8000; /* 32KB */ 1639 1640 /* Can't reserve the prom region, it is already marked as 1641 * used, at least on x86. Instead, reserve a memory region a 1642 * board would certainly use. If it works, go ahead. If not, 1643 * run like hell... */ 1644 1645 if (!request_mem_region (mem_addr, 16, depca_string)) 1646 return unknown; 1647 1648 /* Copy the first 16 bytes of ROM */ 1649 1650 ptr = ioremap(prom_addr, 16); 1651 if (ptr == NULL) { 1652 printk(KERN_ERR "depca: I/O remap failed at %lx\n", prom_addr); 1653 return unknown; 1654 } 1655 for (i = 0; i < 16; i++) { 1656 tmpstr[i] = readb(ptr + i); 1657 } 1658 iounmap(ptr); 1659 1660 release_mem_region (mem_addr, 16); 1661 1662 /* Check if PROM contains a valid string */ 1663 for (i = 0; *depca_signature[i] != '\0'; i++) { 1664 for (j = 0, k = 0; j < 16 && k < strlen(depca_signature[i]); j++) { 1665 if (depca_signature[i][k] == tmpstr[j]) { /* track signature */ 1666 k++; 1667 } else { /* lost signature; begin search again */ 1668 k = 0; 1669 } 1670 } 1671 if (k == strlen(depca_signature[i])) 1672 break; 1673 } 1674 1675 /* Check if name string is valid, provided there's no PROM */ 1676 if (name && *name && (i == unknown)) { 1677 for (i = 0; *depca_signature[i] != '\0'; i++) { 1678 if (strcmp(name, depca_signature[i]) == 0) 1679 break; 1680 } 1681 } 1682 1683 return i; 1684} 1685 1686/* 1687** Look for a special sequence in the Ethernet station address PROM that 1688** is common across all DEPCA products. Note that the original DEPCA needs 1689** its ROM address counter to be initialized and enabled. Only enable 1690** if the first address octet is a 0x08 - this minimises the chances of 1691** messing around with some other hardware, but it assumes that this DEPCA 1692** card initialized itself correctly. 1693** 1694** Search the Ethernet address ROM for the signature. Since the ROM address 1695** counter can start at an arbitrary point, the search must include the entire 1696** probe sequence length plus the (length_of_the_signature - 1). 1697** Stop the search IMMEDIATELY after the signature is found so that the 1698** PROM address counter is correctly positioned at the start of the 1699** ethernet address for later read out. 1700*/ 1701static int __init DevicePresent(u_long ioaddr) 1702{ 1703 union { 1704 struct { 1705 u32 a; 1706 u32 b; 1707 } llsig; 1708 char Sig[sizeof(u32) << 1]; 1709 } 1710 dev; 1711 short sigLength = 0; 1712 s8 data; 1713 s16 nicsr; 1714 int i, j, status = 0; 1715 1716 data = inb(DEPCA_PROM); /* clear counter on DEPCA */ 1717 data = inb(DEPCA_PROM); /* read data */ 1718 1719 if (data == 0x08) { /* Enable counter on DEPCA */ 1720 nicsr = inb(DEPCA_NICSR); 1721 nicsr |= AAC; 1722 outb(nicsr, DEPCA_NICSR); 1723 } 1724 1725 dev.llsig.a = ETH_PROM_SIG; 1726 dev.llsig.b = ETH_PROM_SIG; 1727 sigLength = sizeof(u32) << 1; 1728 1729 for (i = 0, j = 0; j < sigLength && i < PROBE_LENGTH + sigLength - 1; i++) { 1730 data = inb(DEPCA_PROM); 1731 if (dev.Sig[j] == data) { /* track signature */ 1732 j++; 1733 } else { /* lost signature; begin search again */ 1734 if (data == dev.Sig[0]) { /* rare case.... */ 1735 j = 1; 1736 } else { 1737 j = 0; 1738 } 1739 } 1740 } 1741 1742 if (j != sigLength) { 1743 status = -ENODEV; /* search failed */ 1744 } 1745 1746 return status; 1747} 1748 1749/* 1750** The DE100 and DE101 PROM accesses were made non-standard for some bizarre 1751** reason: access the upper half of the PROM with x=0; access the lower half 1752** with x=1. 1753*/ 1754static int __init get_hw_addr(struct net_device *dev) 1755{ 1756 u_long ioaddr = dev->base_addr; 1757 struct depca_private *lp = netdev_priv(dev); 1758 int i, k, tmp, status = 0; 1759 u_short j, x, chksum; 1760 1761 x = (((lp->adapter == de100) || (lp->adapter == de101)) ? 1 : 0); 1762 1763 for (i = 0, k = 0, j = 0; j < 3; j++) { 1764 k <<= 1; 1765 if (k > 0xffff) 1766 k -= 0xffff; 1767 1768 k += (u_char) (tmp = inb(DEPCA_PROM + x)); 1769 dev->dev_addr[i++] = (u_char) tmp; 1770 k += (u_short) ((tmp = inb(DEPCA_PROM + x)) << 8); 1771 dev->dev_addr[i++] = (u_char) tmp; 1772 1773 if (k > 0xffff) 1774 k -= 0xffff; 1775 } 1776 if (k == 0xffff) 1777 k = 0; 1778 1779 chksum = (u_char) inb(DEPCA_PROM + x); 1780 chksum |= (u_short) (inb(DEPCA_PROM + x) << 8); 1781 if (k != chksum) 1782 status = -1; 1783 1784 return status; 1785} 1786 1787/* 1788** Load a packet into the shared memory 1789*/ 1790static int load_packet(struct net_device *dev, struct sk_buff *skb) 1791{ 1792 struct depca_private *lp = netdev_priv(dev); 1793 int i, entry, end, len, status = NETDEV_TX_OK; 1794 1795 entry = lp->tx_new; /* Ring around buffer number. */ 1796 end = (entry + (skb->len - 1) / TX_BUFF_SZ) & lp->txRingMask; 1797 if (!(readl(&lp->tx_ring[end].base) & T_OWN)) { /* Enough room? */ 1798 /* 1799 ** Caution: the write order is important here... don't set up the 1800 ** ownership rights until all the other information is in place. 1801 */ 1802 if (end < entry) { /* wrapped buffer */ 1803 len = (lp->txRingMask - entry + 1) * TX_BUFF_SZ; 1804 memcpy_toio(lp->tx_buff[entry], skb->data, len); 1805 memcpy_toio(lp->tx_buff[0], skb->data + len, skb->len - len); 1806 } else { /* linear buffer */ 1807 memcpy_toio(lp->tx_buff[entry], skb->data, skb->len); 1808 } 1809 1810 /* set up the buffer descriptors */ 1811 len = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len; 1812 for (i = entry; i != end; i = (i+1) & lp->txRingMask) { 1813 /* clean out flags */ 1814 writel(readl(&lp->tx_ring[i].base) & ~T_FLAGS, &lp->tx_ring[i].base); 1815 writew(0x0000, &lp->tx_ring[i].misc); /* clears other error flags */ 1816 writew(-TX_BUFF_SZ, &lp->tx_ring[i].length); /* packet length in buffer */ 1817 len -= TX_BUFF_SZ; 1818 } 1819 /* clean out flags */ 1820 writel(readl(&lp->tx_ring[end].base) & ~T_FLAGS, &lp->tx_ring[end].base); 1821 writew(0x0000, &lp->tx_ring[end].misc); /* clears other error flags */ 1822 writew(-len, &lp->tx_ring[end].length); /* packet length in last buff */ 1823 1824 /* start of packet */ 1825 writel(readl(&lp->tx_ring[entry].base) | T_STP, &lp->tx_ring[entry].base); 1826 /* end of packet */ 1827 writel(readl(&lp->tx_ring[end].base) | T_ENP, &lp->tx_ring[end].base); 1828 1829 for (i = end; i != entry; --i) { 1830 /* ownership of packet */ 1831 writel(readl(&lp->tx_ring[i].base) | T_OWN, &lp->tx_ring[i].base); 1832 if (i == 0) 1833 i = lp->txRingMask + 1; 1834 } 1835 writel(readl(&lp->tx_ring[entry].base) | T_OWN, &lp->tx_ring[entry].base); 1836 1837 lp->tx_new = (++end) & lp->txRingMask; /* update current pointers */ 1838 } else { 1839 status = NETDEV_TX_LOCKED; 1840 } 1841 1842 return status; 1843} 1844 1845static void depca_dbg_open(struct net_device *dev) 1846{ 1847 struct depca_private *lp = netdev_priv(dev); 1848 u_long ioaddr = dev->base_addr; 1849 struct depca_init *p = &lp->init_block; 1850 int i; 1851 1852 if (depca_debug > 1) { 1853 /* Do not copy the shadow init block into shared memory */ 1854 /* Debugging should not affect normal operation! */ 1855 /* The shadow init block will get copied across during InitRestartDepca */ 1856 printk("%s: depca open with irq %d\n", dev->name, dev->irq); 1857 printk("Descriptor head addresses (CPU):\n"); 1858 printk(" 0x%lx 0x%lx\n", (u_long) lp->rx_ring, (u_long) lp->tx_ring); 1859 printk("Descriptor addresses (CPU):\nRX: "); 1860 for (i = 0; i < lp->rxRingMask; i++) { 1861 if (i < 3) { 1862 printk("%p ", &lp->rx_ring[i].base); 1863 } 1864 } 1865 printk("...%p\n", &lp->rx_ring[i].base); 1866 printk("TX: "); 1867 for (i = 0; i < lp->txRingMask; i++) { 1868 if (i < 3) { 1869 printk("%p ", &lp->tx_ring[i].base); 1870 } 1871 } 1872 printk("...%p\n", &lp->tx_ring[i].base); 1873 printk("\nDescriptor buffers (Device):\nRX: "); 1874 for (i = 0; i < lp->rxRingMask; i++) { 1875 if (i < 3) { 1876 printk("0x%8.8x ", readl(&lp->rx_ring[i].base)); 1877 } 1878 } 1879 printk("...0x%8.8x\n", readl(&lp->rx_ring[i].base)); 1880 printk("TX: "); 1881 for (i = 0; i < lp->txRingMask; i++) { 1882 if (i < 3) { 1883 printk("0x%8.8x ", readl(&lp->tx_ring[i].base)); 1884 } 1885 } 1886 printk("...0x%8.8x\n", readl(&lp->tx_ring[i].base)); 1887 printk("Initialisation block at 0x%8.8lx(Phys)\n", lp->mem_start); 1888 printk(" mode: 0x%4.4x\n", p->mode); 1889 printk(" physical address: %pM\n", p->phys_addr); 1890 printk(" multicast hash table: "); 1891 for (i = 0; i < (HASH_TABLE_LEN >> 3) - 1; i++) { 1892 printk("%2.2x:", p->mcast_table[i]); 1893 } 1894 printk("%2.2x\n", p->mcast_table[i]); 1895 printk(" rx_ring at: 0x%8.8x\n", p->rx_ring); 1896 printk(" tx_ring at: 0x%8.8x\n", p->tx_ring); 1897 printk("buffers (Phys): 0x%8.8lx\n", lp->mem_start + lp->buffs_offset); 1898 printk("Ring size:\nRX: %d Log2(rxRingMask): 0x%8.8x\n", (int) lp->rxRingMask + 1, lp->rx_rlen); 1899 printk("TX: %d Log2(txRingMask): 0x%8.8x\n", (int) lp->txRingMask + 1, lp->tx_rlen); 1900 outw(CSR2, DEPCA_ADDR); 1901 printk("CSR2&1: 0x%4.4x", inw(DEPCA_DATA)); 1902 outw(CSR1, DEPCA_ADDR); 1903 printk("%4.4x\n", inw(DEPCA_DATA)); 1904 outw(CSR3, DEPCA_ADDR); 1905 printk("CSR3: 0x%4.4x\n", inw(DEPCA_DATA)); 1906 } 1907} 1908 1909/* 1910** Perform IOCTL call functions here. Some are privileged operations and the 1911** effective uid is checked in those cases. 1912** All multicast IOCTLs will not work here and are for testing purposes only. 1913*/ 1914static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 1915{ 1916 struct depca_private *lp = netdev_priv(dev); 1917 struct depca_ioctl *ioc = (struct depca_ioctl *) &rq->ifr_ifru; 1918 int i, status = 0; 1919 u_long ioaddr = dev->base_addr; 1920 union { 1921 u8 addr[(HASH_TABLE_LEN * ETH_ALEN)]; 1922 u16 sval[(HASH_TABLE_LEN * ETH_ALEN) >> 1]; 1923 u32 lval[(HASH_TABLE_LEN * ETH_ALEN) >> 2]; 1924 } tmp; 1925 unsigned long flags; 1926 void *buf; 1927 1928 switch (ioc->cmd) { 1929 case DEPCA_GET_HWADDR: /* Get the hardware address */ 1930 for (i = 0; i < ETH_ALEN; i++) { 1931 tmp.addr[i] = dev->dev_addr[i]; 1932 } 1933 ioc->len = ETH_ALEN; 1934 if (copy_to_user(ioc->data, tmp.addr, ioc->len)) 1935 return -EFAULT; 1936 break; 1937 1938 case DEPCA_SET_HWADDR: /* Set the hardware address */ 1939 if (!capable(CAP_NET_ADMIN)) 1940 return -EPERM; 1941 if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN)) 1942 return -EFAULT; 1943 for (i = 0; i < ETH_ALEN; i++) { 1944 dev->dev_addr[i] = tmp.addr[i]; 1945 } 1946 netif_stop_queue(dev); 1947 while (lp->tx_old != lp->tx_new) 1948 cpu_relax(); /* Wait for the ring to empty */ 1949 1950 STOP_DEPCA; /* Temporarily stop the depca. */ 1951 depca_init_ring(dev); /* Initialize the descriptor rings */ 1952 LoadCSRs(dev); /* Reload CSR3 */ 1953 InitRestartDepca(dev); /* Resume normal operation. */ 1954 netif_start_queue(dev); /* Unlock the TX ring */ 1955 break; 1956 1957 case DEPCA_SET_PROM: /* Set Promiscuous Mode */ 1958 if (!capable(CAP_NET_ADMIN)) 1959 return -EPERM; 1960 netif_stop_queue(dev); 1961 while (lp->tx_old != lp->tx_new) 1962 cpu_relax(); /* Wait for the ring to empty */ 1963 1964 STOP_DEPCA; /* Temporarily stop the depca. */ 1965 depca_init_ring(dev); /* Initialize the descriptor rings */ 1966 lp->init_block.mode |= PROM; /* Set promiscuous mode */ 1967 1968 LoadCSRs(dev); /* Reload CSR3 */ 1969 InitRestartDepca(dev); /* Resume normal operation. */ 1970 netif_start_queue(dev); /* Unlock the TX ring */ 1971 break; 1972 1973 case DEPCA_CLR_PROM: /* Clear Promiscuous Mode */ 1974 if (!capable(CAP_NET_ADMIN)) 1975 return -EPERM; 1976 netif_stop_queue(dev); 1977 while (lp->tx_old != lp->tx_new) 1978 cpu_relax(); /* Wait for the ring to empty */ 1979 1980 STOP_DEPCA; /* Temporarily stop the depca. */ 1981 depca_init_ring(dev); /* Initialize the descriptor rings */ 1982 lp->init_block.mode &= ~PROM; /* Clear promiscuous mode */ 1983 1984 LoadCSRs(dev); /* Reload CSR3 */ 1985 InitRestartDepca(dev); /* Resume normal operation. */ 1986 netif_start_queue(dev); /* Unlock the TX ring */ 1987 break; 1988 1989 case DEPCA_SAY_BOO: /* Say "Boo!" to the kernel log file */ 1990 if(!capable(CAP_NET_ADMIN)) 1991 return -EPERM; 1992 printk("%s: Boo!\n", dev->name); 1993 break; 1994 1995 case DEPCA_GET_MCA: /* Get the multicast address table */ 1996 ioc->len = (HASH_TABLE_LEN >> 3); 1997 if (copy_to_user(ioc->data, lp->init_block.mcast_table, ioc->len)) 1998 return -EFAULT; 1999 break; 2000 2001 case DEPCA_SET_MCA: /* Set a multicast address */ 2002 if (!capable(CAP_NET_ADMIN)) 2003 return -EPERM; 2004 if (ioc->len >= HASH_TABLE_LEN) 2005 return -EINVAL; 2006 if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN * ioc->len)) 2007 return -EFAULT; 2008 set_multicast_list(dev); 2009 break; 2010 2011 case DEPCA_CLR_MCA: /* Clear all multicast addresses */ 2012 if (!capable(CAP_NET_ADMIN)) 2013 return -EPERM; 2014 set_multicast_list(dev); 2015 break; 2016 2017 case DEPCA_MCA_EN: /* Enable pass all multicast addressing */ 2018 if (!capable(CAP_NET_ADMIN)) 2019 return -EPERM; 2020 set_multicast_list(dev); 2021 break; 2022 2023 case DEPCA_GET_STATS: /* Get the driver statistics */ 2024 ioc->len = sizeof(lp->pktStats); 2025 buf = kmalloc(ioc->len, GFP_KERNEL); 2026 if(!buf) 2027 return -ENOMEM; 2028 spin_lock_irqsave(&lp->lock, flags); 2029 memcpy(buf, &lp->pktStats, ioc->len); 2030 spin_unlock_irqrestore(&lp->lock, flags); 2031 if (copy_to_user(ioc->data, buf, ioc->len)) 2032 status = -EFAULT; 2033 kfree(buf); 2034 break; 2035 2036 case DEPCA_CLR_STATS: /* Zero out the driver statistics */ 2037 if (!capable(CAP_NET_ADMIN)) 2038 return -EPERM; 2039 spin_lock_irqsave(&lp->lock, flags); 2040 memset(&lp->pktStats, 0, sizeof(lp->pktStats)); 2041 spin_unlock_irqrestore(&lp->lock, flags); 2042 break; 2043 2044 case DEPCA_GET_REG: /* Get the DEPCA Registers */ 2045 i = 0; 2046 tmp.sval[i++] = inw(DEPCA_NICSR); 2047 outw(CSR0, DEPCA_ADDR); /* status register */ 2048 tmp.sval[i++] = inw(DEPCA_DATA); 2049 memcpy(&tmp.sval[i], &lp->init_block, sizeof(struct depca_init)); 2050 ioc->len = i + sizeof(struct depca_init); 2051 if (copy_to_user(ioc->data, tmp.addr, ioc->len)) 2052 return -EFAULT; 2053 break; 2054 2055 default: 2056 return -EOPNOTSUPP; 2057 } 2058 2059 return status; 2060} 2061 2062static int __init depca_module_init (void) 2063{ 2064 int err = 0; 2065 2066#ifdef CONFIG_MCA 2067 err = mca_register_driver(&depca_mca_driver); 2068 if (err) 2069 goto err; 2070#endif 2071#ifdef CONFIG_EISA 2072 err = eisa_driver_register(&depca_eisa_driver); 2073 if (err) 2074 goto err_mca; 2075#endif 2076 err = platform_driver_register(&depca_isa_driver); 2077 if (err) 2078 goto err_eisa; 2079 2080 depca_platform_probe(); 2081 return 0; 2082 2083err_eisa: 2084#ifdef CONFIG_EISA 2085 eisa_driver_unregister(&depca_eisa_driver); 2086err_mca: 2087#endif 2088#ifdef CONFIG_MCA 2089 mca_unregister_driver(&depca_mca_driver); 2090err: 2091#endif 2092 return err; 2093} 2094 2095static void __exit depca_module_exit (void) 2096{ 2097 int i; 2098#ifdef CONFIG_MCA 2099 mca_unregister_driver (&depca_mca_driver); 2100#endif 2101#ifdef CONFIG_EISA 2102 eisa_driver_unregister (&depca_eisa_driver); 2103#endif 2104 platform_driver_unregister (&depca_isa_driver); 2105 2106 for (i = 0; depca_io_ports[i].iobase; i++) { 2107 if (depca_io_ports[i].device) { 2108 depca_io_ports[i].device->dev.platform_data = NULL; 2109 platform_device_unregister (depca_io_ports[i].device); 2110 depca_io_ports[i].device = NULL; 2111 } 2112 } 2113} 2114 2115module_init (depca_module_init); 2116module_exit (depca_module_exit); 2117