1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
6 Written 1996 by Russell Nelson, with reference to skeleton.c
7 written 1993-1994 by Donald Becker.
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
12 The author may be reached at nelson@crynwr.com, Crynwr
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
17 Mike Cruse : mcruse@cti-ltd.com
18 : Changes for Linux 2.0 compatibility.
19 : Added dev_id parameter in net_interrupt(),
20 : request_irq() and free_irq(). Just NULL for now.
22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
23 : in net_open() and net_close() so kerneld would know
24 : that the module is in use and wouldn't eject the
27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
28 : as an example. Disabled autoprobing in init_module(),
29 : not a good thing to do to other devices while Linux
30 : is running from all accounts.
32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
35 : email: ethernet@crystal.cirrus.com
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
39 Andrew Morton : andrewm@uow.edu.au
41 : Handle kmalloc() failures
42 : Other resource allocation fixes
44 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
45 : If ALLOW_DMA is true, make DMA runtime selectable
46 : Folded in changes from Cirrus (Melody Lee
47 : <klee@crystal.cirrus.com>)
48 : Don't call netif_wake_queue() in net_send_packet()
49 : Fixed an out-of-mem bug in dma_rx()
50 : Updated Documentation/networking/cs89x0.txt
52 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre1
53 : Use skb_reserve to longword align IP header (two places)
54 : Remove a delay loop from dma_rx()
55 : Replace '100' with HZ
56 : Clean up a couple of skb API abuses
57 : Added 'cs89x0_dma=N' kernel boot option
58 : Correctly initialise lp->lock in non-module compile
60 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre4-1
61 : MOD_INC/DEC race fix (see
62 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
64 Andrew Morton : andrewm@uow.edu.au / Kernel 2.4.0-test7-pre2
65 : Enhanced EEPROM support to cover more devices,
66 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
67 : (Jason Gunthorpe <jgg@ualberta.ca>)
69 Andrew Morton : Kernel 2.4.0-test11-pre4
70 : Use dev->name in request_*() (Andrey Panin)
71 : Fix an error-path memleak in init_module()
72 : Preserve return value from request_irq()
73 : Fix type of `media' module parm (Keith Owens)
74 : Use SET_MODULE_OWNER()
75 : Tidied up strange request_irq() abuse in net_open().
77 Andrew Morton : Kernel 2.4.3-pre1
78 : Request correct number of pages for DMA (Hugh Dickens)
79 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
80 : because unregister_netdev() calls get_stats.
81 : Make `version[]' __initdata
82 : Uninlined the read/write reg/word functions.
84 Oskar Schirmer : oskar@scara.com
85 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
87 Deepak Saxena : dsaxena@plexity.net
88 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
92 /* Always include 'config.h' first in case the user wants to turn on
93 or override something. */
94 #include <linux/config.h>
95 #include <linux/module.h>
98 * Set this to zero to disable DMA code
100 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
101 * module options so we don't break any startup scripts.
103 #ifndef CONFIG_ARCH_IXDP2X01
110 * Set this to zero to remove all the debug statements via
111 * dead code elimination
118 Crynwr packet driver epktisa.
120 Crystal Semiconductor data sheets.
124 #include <linux/errno.h>
125 #include <linux/netdevice.h>
126 #include <linux/etherdevice.h>
127 #include <linux/kernel.h>
128 #include <linux/types.h>
129 #include <linux/fcntl.h>
130 #include <linux/interrupt.h>
131 #include <linux/ioport.h>
132 #include <linux/in.h>
133 #include <linux/skbuff.h>
134 #include <linux/slab.h>
135 #include <linux/spinlock.h>
136 #include <linux/string.h>
137 #include <linux/init.h>
138 #include <linux/bitops.h>
139 #include <linux/delay.h>
141 #include <asm/system.h>
149 static char version[] __initdata =
150 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
152 #define DRV_NAME "cs89x0"
154 /* First, a few definitions that the brave might change.
155 A zero-terminated list of I/O addresses to be probed. Some special flags..
156 Addr & 1 = Read back the address port, look for signature and reset
157 the page window before probing
158 Addr & 3 = Reset the page window and probe
159 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
160 but it is possible that a Cirrus board could be plugged into the ISA
162 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
163 them to system IRQ numbers. This mapping is card specific and is set to
164 the configuration of the Cirrus Eval board for this chip. */
165 #ifdef CONFIG_ARCH_CLPS7500
166 static unsigned int netcard_portlist[] __initdata =
167 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
168 static unsigned int cs8900_irq_map[] = {12,0,0,0};
169 #elif defined(CONFIG_SH_HICOSH4)
170 static unsigned int netcard_portlist[] __initdata =
172 static unsigned int cs8900_irq_map[] = {1,0,0,0};
173 #elif defined(CONFIG_ARCH_IXDP2X01)
175 static unsigned int netcard_portlist[] __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
176 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
177 #elif defined(CONFIG_ARCH_PNX0105)
179 #include <asm/arch/gpio.h>
180 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
181 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
182 static unsigned int netcard_portlist[] __initdata = {CIRRUS_DEFAULT_BASE, 0};
183 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
185 static unsigned int netcard_portlist[] __initdata =
186 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
187 static unsigned int cs8900_irq_map[] = {10,11,12,5};
191 static unsigned int net_debug = DEBUGGING;
193 #define net_debug 0 /* gcc will remove all the debug code for us */
196 /* The number of low I/O ports used by the ethercard. */
197 #define NETCARD_IO_EXTENT 16
199 /* we allow the user to override various values normally set in the EEPROM */
200 #define FORCE_RJ45 0x0001 /* pick one of these three */
201 #define FORCE_AUI 0x0002
202 #define FORCE_BNC 0x0004
204 #define FORCE_AUTO 0x0010 /* pick one of these three */
205 #define FORCE_HALF 0x0020
206 #define FORCE_FULL 0x0030
208 /* Information that need to be kept for each board. */
210 struct net_device_stats stats;
211 int chip_type; /* one of: CS8900, CS8920, CS8920M */
212 char chip_revision; /* revision letter of the chip ('A'...) */
213 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
214 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
215 int adapter_cnf; /* adapter configuration from EEPROM */
216 int isa_config; /* ISA configuration from EEPROM */
217 int irq_map; /* IRQ map from EEPROM */
218 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
219 int curr_rx_cfg; /* a copy of PP_RxCFG */
220 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
221 int send_underrun; /* keep track of how many underruns in a row we get */
222 int force; /* force various values; see FORCE* above. */
225 int use_dma; /* Flag: we're using dma */
226 int dma; /* DMA channel */
227 int dmasize; /* 16 or 64 */
228 unsigned char *dma_buff; /* points to the beginning of the buffer */
229 unsigned char *end_dma_buff; /* points to the end of the buffer */
230 unsigned char *rx_dma_ptr; /* points to the next packet */
234 /* Index to functions, as function prototypes. */
236 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
237 static int net_open(struct net_device *dev);
238 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
239 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
240 static void set_multicast_list(struct net_device *dev);
241 static void net_timeout(struct net_device *dev);
242 static void net_rx(struct net_device *dev);
243 static int net_close(struct net_device *dev);
244 static struct net_device_stats *net_get_stats(struct net_device *dev);
245 static void reset_chip(struct net_device *dev);
246 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
247 static int get_eeprom_cksum(int off, int len, int *buffer);
248 static int set_mac_address(struct net_device *dev, void *addr);
249 static void count_rx_errors(int status, struct net_local *lp);
250 #ifdef CONFIG_NET_POLL_CONTROLLER
251 static void net_poll_controller(struct net_device *dev);
254 static void get_dma_channel(struct net_device *dev);
255 static void release_dma_buff(struct net_local *lp);
258 /* Example routines you must write ;->. */
259 #define tx_done(dev) 1
262 * Permit 'cs89x0_dma=N' in the kernel boot environment
264 #if !defined(MODULE) && (ALLOW_DMA != 0)
265 static int g_cs89x0_dma;
267 static int __init dma_fn(char *str)
269 g_cs89x0_dma = simple_strtol(str,NULL,0);
273 __setup("cs89x0_dma=", dma_fn);
274 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
277 static int g_cs89x0_media__force;
279 static int __init media_fn(char *str)
281 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
282 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
283 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
287 __setup("cs89x0_media=", media_fn);
290 /* Check for a network adaptor of this type, and return '0' iff one exists.
291 If dev->base_addr == 0, probe all likely locations.
292 If dev->base_addr == 1, always return failure.
293 If dev->base_addr == 2, allocate space for the device and return success
294 (detachable devices only).
298 struct net_device * __init cs89x0_probe(int unit)
300 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
307 return ERR_PTR(-ENODEV);
309 sprintf(dev->name, "eth%d", unit);
310 netdev_boot_setup_check(dev);
315 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
317 if (io > 0x1ff) { /* Check a single specified location. */
318 err = cs89x0_probe1(dev, io, 0);
319 } else if (io != 0) { /* Don't probe at all. */
322 for (port = netcard_portlist; *port; port++) {
323 if (cs89x0_probe1(dev, *port, 0) == 0)
335 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
341 readreg(struct net_device *dev, int portno)
343 outw(portno, dev->base_addr + ADD_PORT);
344 return inw(dev->base_addr + DATA_PORT);
348 writereg(struct net_device *dev, int portno, int value)
350 outw(portno, dev->base_addr + ADD_PORT);
351 outw(value, dev->base_addr + DATA_PORT);
355 readword(struct net_device *dev, int portno)
357 return inw(dev->base_addr + portno);
361 writeword(struct net_device *dev, int portno, int value)
363 outw(value, dev->base_addr + portno);
367 wait_eeprom_ready(struct net_device *dev)
369 int timeout = jiffies;
370 /* check to see if the EEPROM is ready, a timeout is used -
371 just in case EEPROM is ready when SI_BUSY in the
372 PP_SelfST is clear */
373 while(readreg(dev, PP_SelfST) & SI_BUSY)
374 if (jiffies - timeout >= 40)
380 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
384 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
385 for (i = 0; i < len; i++) {
386 if (wait_eeprom_ready(dev) < 0) return -1;
387 /* Now send the EEPROM read command and EEPROM location to read */
388 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
389 if (wait_eeprom_ready(dev) < 0) return -1;
390 buffer[i] = readreg(dev, PP_EEData);
391 if (net_debug > 3) printk("%04x ", buffer[i]);
393 if (net_debug > 3) printk("\n");
398 get_eeprom_cksum(int off, int len, int *buffer)
403 for (i = 0; i < len; i++)
411 #ifdef CONFIG_NET_POLL_CONTROLLER
413 * Polling receive - used by netconsole and other diagnostic tools
414 * to allow network i/o with interrupts disabled.
416 static void net_poll_controller(struct net_device *dev)
418 disable_irq(dev->irq);
419 net_interrupt(dev->irq, dev, NULL);
420 enable_irq(dev->irq);
424 /* This is the real probe routine. Linux has a history of friendly device
425 probes on the ISA bus. A good device probes avoids doing writes, and
426 verifies that the correct device exists and functions.
431 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
433 struct net_local *lp = netdev_priv(dev);
434 static unsigned version_printed;
437 unsigned rev_type = 0;
438 int eeprom_buff[CHKSUM_LEN];
441 SET_MODULE_OWNER(dev);
442 /* Initialize the device structure. */
444 memset(lp, 0, sizeof(*lp));
445 spin_lock_init(&lp->lock);
450 lp->dma = g_cs89x0_dma;
451 lp->dmasize = 16; /* Could make this an option... */
454 lp->force = g_cs89x0_media__force;
458 #ifdef CONFIG_ARCH_PNX0105
461 /* Map GPIO registers for the pins connected to the CS8900a. */
462 if (map_cirrus_gpio() < 0)
467 /* Map event-router registers. */
468 if (map_event_router() < 0)
474 unmap_event_router();
476 dev->base_addr = ioaddr;
478 for (i = 0 ; i < 3 ; i++)
482 /* Grab the region so we can find another board if autoIRQ fails. */
483 /* WTF is going on here? */
484 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
485 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
486 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
491 #ifdef CONFIG_SH_HICOSH4
492 /* truely reset the chip */
493 outw(0x0114, ioaddr + ADD_PORT);
494 outw(0x0040, ioaddr + DATA_PORT);
497 /* if they give us an odd I/O address, then do ONE write to
498 the address port, to get it back to address zero, where we
499 expect to find the EISA signature word. An IO with a base of 0x3
500 will skip the test for the ADD_PORT. */
503 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
504 if ((ioaddr & 2) != 2)
505 if ((inw((ioaddr & ~3)+ ADD_PORT) & ADD_MASK) != ADD_SIG) {
506 printk(KERN_ERR "%s: bad signature 0x%x\n",
507 dev->name, inw((ioaddr & ~3)+ ADD_PORT));
512 printk(KERN_DEBUG "PP_addr at %x: 0x%x\n",
513 ioaddr + ADD_PORT, inw(ioaddr + ADD_PORT));
516 outw(PP_ChipID, ioaddr + ADD_PORT);
518 tmp = inw(ioaddr + DATA_PORT);
519 if (tmp != CHIP_EISA_ID_SIG) {
520 printk(KERN_DEBUG "%s: incorrect signature at %x: 0x%x!="
521 CHIP_EISA_ID_SIG_STR "\n",
522 dev->name, ioaddr + DATA_PORT, tmp);
527 /* Fill in the 'dev' fields. */
528 dev->base_addr = ioaddr;
530 /* get the chip type */
531 rev_type = readreg(dev, PRODUCT_ID_ADD);
532 lp->chip_type = rev_type &~ REVISON_BITS;
533 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
535 /* Check the chip type and revision in order to set the correct send command
536 CS8920 revision C and CS8900 revision F can use the faster send. */
537 lp->send_cmd = TX_AFTER_381;
538 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
539 lp->send_cmd = TX_NOW;
540 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
541 lp->send_cmd = TX_NOW;
543 if (net_debug && version_printed++ == 0)
546 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
548 lp->chip_type==CS8900?'0':'2',
549 lp->chip_type==CS8920M?"M":"",
555 /* Here we read the current configuration of the chip. If there
556 is no Extended EEPROM then the idea is to not disturb the chip
557 configuration, it should have been correctly setup by automatic
558 EEPROM read on reset. So, if the chip says it read the EEPROM
559 the driver will always do *something* instead of complain that
562 #ifdef CONFIG_SH_HICOSH4
564 /* For the HiCO.SH4 board, things are different: we don't
565 have EEPROM, but there is some data in flash, so we go
566 get it there directly (MAC). */
569 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
571 confd = (__u16*) 0xa0013fc0;
573 confd = (__u16*) 0xa001ffc0;
575 cnt = (*confd++ & 0x00ff) >> 1;
579 switch (j & 0x0fff) {
581 for (i = 0; i < ETH_ALEN/2; i++) {
582 dev->dev_addr[i*2] = confd[i] & 0xFF;
583 dev->dev_addr[i*2+1] = confd[i] >> 8;
594 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
595 (EEPROM_OK|EEPROM_PRESENT)) {
597 for (i=0; i < ETH_ALEN/2; i++) {
599 Addr = readreg(dev, PP_IA+i*2);
600 dev->dev_addr[i*2] = Addr & 0xFF;
601 dev->dev_addr[i*2+1] = Addr >> 8;
604 /* Load the Adapter Configuration.
605 Note: Barring any more specific information from some
606 other source (ie EEPROM+Schematics), we would not know
607 how to operate a 10Base2 interface on the AUI port.
608 However, since we do read the status of HCB1 and use
609 settings that always result in calls to control_dc_dc(dev,0)
610 a BNC interface should work if the enable pin
611 (dc/dc converter) is on HCB1. It will be called AUI
615 i = readreg(dev, PP_LineCTL);
616 /* Preserve the setting of the HCB1 pin. */
617 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
618 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
619 /* Save the sqelch bit */
620 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
621 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
622 /* Check if the card is in 10Base-t only mode */
623 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
624 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
625 /* Check if the card is in AUI only mode */
626 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
627 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
628 /* Check if the card is in Auto mode. */
629 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
630 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
631 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
634 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
635 dev->name, i, lp->adapter_cnf);
637 /* IRQ. Other chips already probe, see below. */
638 if (lp->chip_type == CS8900)
639 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
641 printk( "[Cirrus EEPROM] ");
646 /* First check to see if an EEPROM is attached. */
647 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
649 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
652 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
653 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
654 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
655 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
656 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
657 /* Check if the chip was able to read its own configuration starting
659 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
660 (EEPROM_OK|EEPROM_PRESENT))
661 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
664 /* This reads an extended EEPROM that is not documented
665 in the CS8900 datasheet. */
667 /* get transmission control word but keep the autonegotiation bits */
668 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
669 /* Store adapter configuration */
670 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
671 /* Store ISA configuration */
672 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
673 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
675 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
676 /* store the initial memory base address */
677 for (i = 0; i < ETH_ALEN/2; i++) {
678 dev->dev_addr[i*2] = eeprom_buff[i];
679 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
682 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
683 dev->name, lp->adapter_cnf);
686 /* allow them to force multiple transceivers. If they force multiple, autosense */
689 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
690 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
691 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
692 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
693 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
694 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
695 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
699 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
700 dev->name, lp->force, lp->adapter_cnf);
702 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
704 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
706 /* FIXME: we don't set the Ethernet address on the command line. Use
707 ifconfig IFACE hw ether AABBCCDDEEFF */
709 printk(KERN_INFO "cs89x0 media %s%s%s",
710 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
711 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
712 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
714 lp->irq_map = 0xffff;
716 /* If this is a CS8900 then no pnp soft */
717 if (lp->chip_type != CS8900 &&
718 /* Check if the ISA IRQ has been set */
719 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
720 (i != 0 && i < CS8920_NO_INTS))) {
724 i = lp->isa_config & INT_NO_MASK;
725 if (lp->chip_type == CS8900) {
726 #if defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX0105)
727 i = cs8900_irq_map[0];
729 /* Translate the IRQ using the IRQ mapping table. */
730 if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
731 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
733 i = cs8900_irq_map[i];
735 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
737 int irq_map_buff[IRQ_MAP_LEN/2];
739 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
741 irq_map_buff) >= 0) {
742 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
743 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
751 printk(" IRQ %d", dev->irq);
755 get_dma_channel(dev);
756 printk(", DMA %d", dev->dma);
761 printk(", programmed I/O");
764 /* print the ethernet address. */
766 for (i = 0; i < ETH_ALEN; i++)
768 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
771 dev->open = net_open;
772 dev->stop = net_close;
773 dev->tx_timeout = net_timeout;
774 dev->watchdog_timeo = HZ;
775 dev->hard_start_xmit = net_send_packet;
776 dev->get_stats = net_get_stats;
777 dev->set_multicast_list = set_multicast_list;
778 dev->set_mac_address = set_mac_address;
779 #ifdef CONFIG_NET_POLL_CONTROLLER
780 dev->poll_controller = net_poll_controller;
785 printk("cs89x0_probe1() successful\n");
787 retval = register_netdev(dev);
792 outw(PP_ChipID, dev->base_addr + ADD_PORT);
794 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
800 /*********************************
801 * This page contains DMA routines
802 **********************************/
806 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
809 get_dma_channel(struct net_device *dev)
811 struct net_local *lp = netdev_priv(dev);
815 lp->isa_config |= ISA_RxDMA;
817 if ((lp->isa_config & ANY_ISA_DMA) == 0)
819 dev->dma = lp->isa_config & DMA_NO_MASK;
820 if (lp->chip_type == CS8900)
822 if (dev->dma < 5 || dev->dma > 7) {
823 lp->isa_config &= ~ANY_ISA_DMA;
831 write_dma(struct net_device *dev, int chip_type, int dma)
833 struct net_local *lp = netdev_priv(dev);
834 if ((lp->isa_config & ANY_ISA_DMA) == 0)
836 if (chip_type == CS8900) {
837 writereg(dev, PP_CS8900_ISADMA, dma-5);
839 writereg(dev, PP_CS8920_ISADMA, dma);
844 set_dma_cfg(struct net_device *dev)
846 struct net_local *lp = netdev_priv(dev);
849 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
851 printk("set_dma_cfg(): no DMA\n");
854 if (lp->isa_config & ISA_RxDMA) {
855 lp->curr_rx_cfg |= RX_DMA_ONLY;
857 printk("set_dma_cfg(): RX_DMA_ONLY\n");
859 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
861 printk("set_dma_cfg(): AUTO_RX_DMA\n");
867 dma_bufcfg(struct net_device *dev)
869 struct net_local *lp = netdev_priv(dev);
871 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
877 dma_busctl(struct net_device *dev)
880 struct net_local *lp = netdev_priv(dev);
882 if (lp->isa_config & ANY_ISA_DMA)
883 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
884 if (lp->isa_config & DMA_BURST)
885 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
886 if (lp->dmasize == 64)
887 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
888 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
894 dma_rx(struct net_device *dev)
896 struct net_local *lp = netdev_priv(dev);
899 unsigned char *bp = lp->rx_dma_ptr;
901 status = bp[0] + (bp[1]<<8);
902 length = bp[2] + (bp[3]<<8);
905 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
906 dev->name, (unsigned long)bp, status, length);
908 if ((status & RX_OK) == 0) {
909 count_rx_errors(status, lp);
910 goto skip_this_frame;
913 /* Malloc up new buffer. */
914 skb = dev_alloc_skb(length + 2);
916 if (net_debug) /* I don't think we want to do this to a stressed system */
917 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
918 lp->stats.rx_dropped++;
920 /* AKPM: advance bp to the next frame */
922 bp += (length + 3) & ~3;
923 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
927 skb_reserve(skb, 2); /* longword align L3 header */
930 if (bp + length > lp->end_dma_buff) {
931 int semi_cnt = lp->end_dma_buff - bp;
932 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
933 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
936 memcpy(skb_put(skb,length), bp, length);
938 bp += (length + 3) & ~3;
939 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
943 printk( "%s: received %d byte DMA packet of type %x\n",
945 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
947 skb->protocol=eth_type_trans(skb,dev);
949 dev->last_rx = jiffies;
950 lp->stats.rx_packets++;
951 lp->stats.rx_bytes += length;
954 #endif /* ALLOW_DMA */
956 void __init reset_chip(struct net_device *dev)
958 #ifndef CONFIG_ARCH_IXDP2X01
959 struct net_local *lp = netdev_priv(dev);
960 int ioaddr = dev->base_addr;
962 int reset_start_time;
964 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
969 #ifndef CONFIG_ARCH_IXDP2X01
970 if (lp->chip_type != CS8900) {
971 /* Hardware problem requires PNP registers to be reconfigured after a reset */
972 outw(PP_CS8920_ISAINT, ioaddr + ADD_PORT);
973 outb(dev->irq, ioaddr + DATA_PORT);
974 outb(0, ioaddr + DATA_PORT + 1);
976 outw(PP_CS8920_ISAMemB, ioaddr + ADD_PORT);
977 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
978 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
980 #endif /* IXDP2x01 */
982 /* Wait until the chip is reset */
983 reset_start_time = jiffies;
984 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
990 control_dc_dc(struct net_device *dev, int on_not_off)
992 struct net_local *lp = netdev_priv(dev);
993 unsigned int selfcontrol;
994 int timenow = jiffies;
995 /* control the DC to DC convertor in the SelfControl register.
996 Note: This is hooked up to a general purpose pin, might not
997 always be a DC to DC convertor. */
999 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1000 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1001 selfcontrol |= HCB1;
1003 selfcontrol &= ~HCB1;
1004 writereg(dev, PP_SelfCTL, selfcontrol);
1006 /* Wait for the DC/DC converter to power up - 500ms */
1007 while (jiffies - timenow < HZ)
1011 #define DETECTED_NONE 0
1012 #define DETECTED_RJ45H 1
1013 #define DETECTED_RJ45F 2
1014 #define DETECTED_AUI 3
1015 #define DETECTED_BNC 4
1018 detect_tp(struct net_device *dev)
1020 struct net_local *lp = netdev_priv(dev);
1021 int timenow = jiffies;
1024 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1026 /* If connected to another full duplex capable 10-Base-T card the link pulses
1027 seem to be lost when the auto detect bit in the LineCTL is set.
1028 To overcome this the auto detect bit will be cleared whilst testing the
1029 10-Base-T interface. This would not be necessary for the sparrow chip but
1030 is simpler to do it anyway. */
1031 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1032 control_dc_dc(dev, 0);
1034 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1035 for (timenow = jiffies; jiffies - timenow < 15; )
1037 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1038 return DETECTED_NONE;
1040 if (lp->chip_type == CS8900) {
1041 switch (lp->force & 0xf0) {
1044 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1045 return DETECTED_NONE;
1047 /* CS8900 doesn't support AUTO, change to HALF*/
1049 lp->force &= ~FORCE_AUTO;
1050 lp->force |= FORCE_HALF;
1055 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1058 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1060 switch (lp->force & 0xf0) {
1062 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1065 lp->auto_neg_cnf = 0;
1068 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1072 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1074 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1075 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1076 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1077 if (jiffies - timenow > 4000) {
1078 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1083 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1086 return DETECTED_RJ45F;
1088 return DETECTED_RJ45H;
1091 /* send a test packet - return true if carrier bits are ok */
1093 send_test_pkt(struct net_device *dev)
1095 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1096 0, 46, /* A 46 in network order */
1097 0, 0, /* DSAP=0 & SSAP=0 fields */
1098 0xf3, 0 /* Control (Test Req + P bit set) */ };
1099 long timenow = jiffies;
1101 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1103 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1104 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1106 writeword(dev, TX_CMD_PORT, TX_AFTER_ALL);
1107 writeword(dev, TX_LEN_PORT, ETH_ZLEN);
1109 /* Test to see if the chip has allocated memory for the packet */
1110 while (jiffies - timenow < 5)
1111 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1113 if (jiffies - timenow >= 5)
1114 return 0; /* this shouldn't happen */
1116 /* Write the contents of the packet */
1117 outsw(dev->base_addr + TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1119 if (net_debug > 1) printk("Sending test packet ");
1120 /* wait a couple of jiffies for packet to be received */
1121 for (timenow = jiffies; jiffies - timenow < 3; )
1123 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1124 if (net_debug > 1) printk("succeeded\n");
1127 if (net_debug > 1) printk("failed\n");
1133 detect_aui(struct net_device *dev)
1135 struct net_local *lp = netdev_priv(dev);
1137 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1138 control_dc_dc(dev, 0);
1140 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1142 if (send_test_pkt(dev))
1143 return DETECTED_AUI;
1145 return DETECTED_NONE;
1149 detect_bnc(struct net_device *dev)
1151 struct net_local *lp = netdev_priv(dev);
1153 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1154 control_dc_dc(dev, 1);
1156 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1158 if (send_test_pkt(dev))
1159 return DETECTED_BNC;
1161 return DETECTED_NONE;
1166 write_irq(struct net_device *dev, int chip_type, int irq)
1170 if (chip_type == CS8900) {
1171 /* Search the mapping table for the corresponding IRQ pin. */
1172 for (i = 0; i != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++)
1173 if (cs8900_irq_map[i] == irq)
1176 if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
1178 writereg(dev, PP_CS8900_ISAINT, i);
1180 writereg(dev, PP_CS8920_ISAINT, irq);
1184 /* Open/initialize the board. This is called (in the current kernel)
1185 sometime after booting when the 'ifconfig' program is run.
1187 This routine should set everything up anew at each open, even
1188 registers that "should" only need to be set once at boot, so that
1189 there is non-reboot way to recover if something goes wrong.
1192 /* AKPM: do we need to do any locking here? */
1195 net_open(struct net_device *dev)
1197 struct net_local *lp = netdev_priv(dev);
1202 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX0105) /* uses irq#1, so this won't work */
1204 /* Allow interrupts to be generated by the chip */
1205 /* Cirrus' release had this: */
1207 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1209 /* And 2.3.47 had this: */
1210 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1212 for (i = 2; i < CS8920_NO_INTS; i++) {
1213 if ((1 << i) & lp->irq_map) {
1214 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1216 write_irq(dev, lp->chip_type, i);
1217 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1223 if (i >= CS8920_NO_INTS) {
1224 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1225 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1233 #if !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX0105)
1234 if (((1 << dev->irq) & lp->irq_map) == 0) {
1235 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1236 dev->name, dev->irq, lp->irq_map);
1241 /* FIXME: Cirrus' release had this: */
1242 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1243 /* And 2.3.47 had this: */
1245 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1247 write_irq(dev, lp->chip_type, dev->irq);
1248 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1251 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1258 if (lp->isa_config & ANY_ISA_DMA) {
1259 unsigned long flags;
1260 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1261 get_order(lp->dmasize * 1024));
1263 if (!lp->dma_buff) {
1264 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1267 if (net_debug > 1) {
1268 printk( "%s: dma %lx %lx\n",
1270 (unsigned long)lp->dma_buff,
1271 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1273 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1274 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1275 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1278 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1279 if (request_dma(dev->dma, dev->name)) {
1280 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1283 write_dma(dev, lp->chip_type, dev->dma);
1284 lp->rx_dma_ptr = lp->dma_buff;
1285 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1286 spin_lock_irqsave(&lp->lock, flags);
1287 disable_dma(dev->dma);
1288 clear_dma_ff(dev->dma);
1289 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1290 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1291 set_dma_count(dev->dma, lp->dmasize*1024);
1292 enable_dma(dev->dma);
1293 spin_unlock_irqrestore(&lp->lock, flags);
1296 #endif /* ALLOW_DMA */
1298 /* set the Ethernet address */
1299 for (i=0; i < ETH_ALEN/2; i++)
1300 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1302 /* while we're testing the interface, leave interrupts disabled */
1303 writereg(dev, PP_BusCTL, MEMORY_ON);
1305 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1306 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1307 lp->linectl = LOW_RX_SQUELCH;
1311 /* check to make sure that they have the "right" hardware available */
1312 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1313 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1314 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1315 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1316 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1318 #ifdef CONFIG_ARCH_PNX0105
1319 result = A_CNF_10B_T;
1322 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1325 release_dma_buff(lp);
1327 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1328 free_irq(dev->irq, dev);
1333 /* set the hardware to the configured choice */
1334 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1335 case A_CNF_MEDIA_10B_T:
1336 result = detect_tp(dev);
1337 if (result==DETECTED_NONE) {
1338 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1339 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1340 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1343 case A_CNF_MEDIA_AUI:
1344 result = detect_aui(dev);
1345 if (result==DETECTED_NONE) {
1346 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1347 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1348 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1351 case A_CNF_MEDIA_10B_2:
1352 result = detect_bnc(dev);
1353 if (result==DETECTED_NONE) {
1354 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1355 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1356 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1359 case A_CNF_MEDIA_AUTO:
1360 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1361 if (lp->adapter_cnf & A_CNF_10B_T)
1362 if ((result = detect_tp(dev)) != DETECTED_NONE)
1364 if (lp->adapter_cnf & A_CNF_AUI)
1365 if ((result = detect_aui(dev)) != DETECTED_NONE)
1367 if (lp->adapter_cnf & A_CNF_10B_2)
1368 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1370 printk(KERN_ERR "%s: no media detected\n", dev->name);
1375 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1377 case DETECTED_RJ45H:
1378 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1380 case DETECTED_RJ45F:
1381 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1384 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1387 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1391 /* Turn on both receive and transmit operations */
1392 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1394 /* Receive only error free packets addressed to this card */
1396 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1398 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1400 if (lp->isa_config & STREAM_TRANSFER)
1401 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1405 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1407 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1408 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1410 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1414 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1416 /* now that we've got our act together, enable everything */
1417 writereg(dev, PP_BusCTL, ENABLE_IRQ
1418 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1423 netif_start_queue(dev);
1425 printk("cs89x0: net_open() succeeded\n");
1431 static void net_timeout(struct net_device *dev)
1433 /* If we get here, some higher level has decided we are broken.
1434 There should really be a "kick me" function call instead. */
1435 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1436 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1437 /* Try to restart the adaptor. */
1438 netif_wake_queue(dev);
1441 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1443 struct net_local *lp = netdev_priv(dev);
1445 if (net_debug > 3) {
1446 printk("%s: sent %d byte packet of type %x\n",
1447 dev->name, skb->len,
1448 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1451 /* keep the upload from being interrupted, since we
1452 ask the chip to start transmitting before the
1453 whole packet has been completely uploaded. */
1455 spin_lock_irq(&lp->lock);
1456 netif_stop_queue(dev);
1458 /* initiate a transmit sequence */
1459 writeword(dev, TX_CMD_PORT, lp->send_cmd);
1460 writeword(dev, TX_LEN_PORT, skb->len);
1462 /* Test to see if the chip has allocated memory for the packet */
1463 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1465 * Gasp! It hasn't. But that shouldn't happen since
1466 * we're waiting for TxOk, so return 1 and requeue this packet.
1469 spin_unlock_irq(&lp->lock);
1470 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1473 /* Write the contents of the packet */
1474 outsw(dev->base_addr + TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1475 spin_unlock_irq(&lp->lock);
1476 lp->stats.tx_bytes += skb->len;
1477 dev->trans_start = jiffies;
1478 dev_kfree_skb (skb);
1481 * We DO NOT call netif_wake_queue() here.
1482 * We also DO NOT call netif_start_queue().
1484 * Either of these would cause another bottom half run through
1485 * net_send_packet() before this packet has fully gone out. That causes
1486 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1487 * a dog. We just return and wait for the Tx completion interrupt handler
1488 * to restart the netdevice layer
1494 /* The typical workload of the driver:
1495 Handle the network interface interrupts. */
1497 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1499 struct net_device *dev = dev_id;
1500 struct net_local *lp;
1504 ioaddr = dev->base_addr;
1505 lp = netdev_priv(dev);
1507 /* we MUST read all the events out of the ISQ, otherwise we'll never
1508 get interrupted again. As a consequence, we can't have any limit
1509 on the number of times we loop in the interrupt handler. The
1510 hardware guarantees that eventually we'll run out of events. Of
1511 course, if you're on a slow machine, and packets are arriving
1512 faster than you can read them off, you're screwed. Hasta la
1514 while ((status = readword(dev, ISQ_PORT))) {
1515 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1517 switch(status & ISQ_EVENT_MASK) {
1518 case ISQ_RECEIVER_EVENT:
1519 /* Got a packet(s). */
1522 case ISQ_TRANSMITTER_EVENT:
1523 lp->stats.tx_packets++;
1524 netif_wake_queue(dev); /* Inform upper layers. */
1525 if ((status & ( TX_OK |
1529 TX_16_COL)) != TX_OK) {
1530 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1531 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1532 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1533 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1534 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1537 case ISQ_BUFFER_EVENT:
1538 if (status & READY_FOR_TX) {
1539 /* we tried to transmit a packet earlier,
1540 but inexplicably ran out of buffers.
1541 That shouldn't happen since we only ever
1542 load one packet. Shrug. Do the right
1544 netif_wake_queue(dev); /* Inform upper layers. */
1546 if (status & TX_UNDERRUN) {
1547 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1548 lp->send_underrun++;
1549 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1550 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1551 /* transmit cycle is done, although
1552 frame wasn't transmitted - this
1553 avoids having to wait for the upper
1554 layers to timeout on us, in the
1555 event of a tx underrun */
1556 netif_wake_queue(dev); /* Inform upper layers. */
1559 if (lp->use_dma && (status & RX_DMA)) {
1560 int count = readreg(dev, PP_DmaFrameCnt);
1563 printk("%s: receiving %d DMA frames\n", dev->name, count);
1564 if (net_debug > 2 && count >1)
1565 printk("%s: receiving %d DMA frames\n", dev->name, count);
1568 count = readreg(dev, PP_DmaFrameCnt);
1569 if (net_debug > 2 && count > 0)
1570 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1575 case ISQ_RX_MISS_EVENT:
1576 lp->stats.rx_missed_errors += (status >>6);
1578 case ISQ_TX_COL_EVENT:
1579 lp->stats.collisions += (status >>6);
1583 return IRQ_RETVAL(handled);
1587 count_rx_errors(int status, struct net_local *lp)
1589 lp->stats.rx_errors++;
1590 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1591 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1592 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1594 lp->stats.rx_crc_errors++;
1595 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1599 /* We have a good packet(s), get it/them out of the buffers. */
1601 net_rx(struct net_device *dev)
1603 struct net_local *lp = netdev_priv(dev);
1604 struct sk_buff *skb;
1607 int ioaddr = dev->base_addr;
1608 status = inw(ioaddr + RX_FRAME_PORT);
1609 length = inw(ioaddr + RX_FRAME_PORT);
1611 if ((status & RX_OK) == 0) {
1612 count_rx_errors(status, lp);
1616 /* Malloc up new buffer. */
1617 skb = dev_alloc_skb(length + 2);
1619 #if 0 /* Again, this seems a cruel thing to do */
1620 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1622 lp->stats.rx_dropped++;
1625 skb_reserve(skb, 2); /* longword align L3 header */
1628 insw(ioaddr + RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1630 skb->data[length-1] = inw(ioaddr + RX_FRAME_PORT);
1632 if (net_debug > 3) {
1633 printk( "%s: received %d byte packet of type %x\n",
1635 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1638 skb->protocol=eth_type_trans(skb,dev);
1640 dev->last_rx = jiffies;
1641 lp->stats.rx_packets++;
1642 lp->stats.rx_bytes += length;
1646 static void release_dma_buff(struct net_local *lp)
1649 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1650 lp->dma_buff = NULL;
1655 /* The inverse routine to net_open(). */
1657 net_close(struct net_device *dev)
1660 struct net_local *lp = netdev_priv(dev);
1663 netif_stop_queue(dev);
1665 writereg(dev, PP_RxCFG, 0);
1666 writereg(dev, PP_TxCFG, 0);
1667 writereg(dev, PP_BufCFG, 0);
1668 writereg(dev, PP_BusCTL, 0);
1670 free_irq(dev->irq, dev);
1673 if (lp->use_dma && lp->dma) {
1675 release_dma_buff(lp);
1679 /* Update the statistics here. */
1683 /* Get the current statistics. This may be called with the card open or
1685 static struct net_device_stats *
1686 net_get_stats(struct net_device *dev)
1688 struct net_local *lp = netdev_priv(dev);
1689 unsigned long flags;
1691 spin_lock_irqsave(&lp->lock, flags);
1692 /* Update the statistics from the device registers. */
1693 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1694 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1695 spin_unlock_irqrestore(&lp->lock, flags);
1700 static void set_multicast_list(struct net_device *dev)
1702 struct net_local *lp = netdev_priv(dev);
1703 unsigned long flags;
1705 spin_lock_irqsave(&lp->lock, flags);
1706 if(dev->flags&IFF_PROMISC)
1708 lp->rx_mode = RX_ALL_ACCEPT;
1710 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1712 /* The multicast-accept list is initialized to accept-all, and we
1713 rely on higher-level filtering for now. */
1714 lp->rx_mode = RX_MULTCAST_ACCEPT;
1719 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1721 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1722 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1723 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1724 spin_unlock_irqrestore(&lp->lock, flags);
1728 static int set_mac_address(struct net_device *dev, void *p)
1731 struct sockaddr *addr = p;
1734 if (netif_running(dev))
1737 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1740 printk("%s: Setting MAC address to ", dev->name);
1741 for (i = 0; i < dev->addr_len; i++)
1742 printk(" %2.2x", dev->dev_addr[i]);
1745 /* set the Ethernet address */
1746 for (i=0; i < ETH_ALEN/2; i++)
1747 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1754 static struct net_device *dev_cs89x0;
1757 * Support the 'debug' module parm even if we're compiled for non-debug to
1758 * avoid breaking someone's startup scripts
1764 static char media[8];
1765 static int duplex=-1;
1767 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1769 static int dmasize=16; /* or 64 */
1771 module_param(io, int, 0);
1772 module_param(irq, int, 0);
1773 module_param(debug, int, 0);
1774 module_param_string(media, media, sizeof(media), 0);
1775 module_param(duplex, int, 0);
1776 module_param(dma , int, 0);
1777 module_param(dmasize , int, 0);
1778 module_param(use_dma , int, 0);
1779 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1780 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1782 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1784 MODULE_PARM_DESC(debug, "(ignored)");
1786 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1787 /* No other value than -1 for duplex seems to be currently interpreted */
1788 MODULE_PARM_DESC(duplex, "(ignored)");
1790 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1791 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1792 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1794 MODULE_PARM_DESC(dma , "(ignored)");
1795 MODULE_PARM_DESC(dmasize , "(ignored)");
1796 MODULE_PARM_DESC(use_dma , "(ignored)");
1799 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1800 MODULE_LICENSE("GPL");
1804 * media=t - specify media type
1808 * duplex=0 - specify forced half/full/autonegotiate duplex
1809 * debug=# - debug level
1812 * Default Chip Configuration:
1813 * DMA Burst = enabled
1814 * IOCHRDY Enabled = enabled
1816 * CS8900 defaults to half-duplex if not specified on command-line
1817 * CS8920 defaults to autoneg if not specified on command-line
1818 * Use reset defaults for other config parameters
1821 * media type specified is supported (circuitry is present)
1822 * if memory address is > 1MB, then required mem decode hw is present
1823 * if 10B-2, then agent other than driver will enable DC/DC converter
1824 (hw or software util)
1832 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1833 struct net_local *lp;
1845 dev->base_addr = io;
1846 lp = netdev_priv(dev);
1850 lp->use_dma = use_dma;
1852 lp->dmasize = dmasize;
1856 spin_lock_init(&lp->lock);
1858 /* boy, they'd better get these right */
1859 if (!strcmp(media, "rj45"))
1860 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1861 else if (!strcmp(media, "aui"))
1862 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1863 else if (!strcmp(media, "bnc"))
1864 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1866 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1869 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1872 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1873 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1876 } else if (io <= 0x1ff) {
1882 if (use_dma && dmasize != 16 && dmasize != 64) {
1883 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1888 ret = cs89x0_probe1(dev, io, 1);
1900 cleanup_module(void)
1902 unregister_netdev(dev_cs89x0);
1903 outw(PP_ChipID, dev_cs89x0->base_addr + ADD_PORT);
1904 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1905 free_netdev(dev_cs89x0);
1911 * version-control: t
1912 * kept-new-versions: 5