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>
150 static char version[] __initdata =
151 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
153 #define DRV_NAME "cs89x0"
155 /* First, a few definitions that the brave might change.
156 A zero-terminated list of I/O addresses to be probed. Some special flags..
157 Addr & 1 = Read back the address port, look for signature and reset
158 the page window before probing
159 Addr & 3 = Reset the page window and probe
160 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
161 but it is possible that a Cirrus board could be plugged into the ISA
163 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
164 them to system IRQ numbers. This mapping is card specific and is set to
165 the configuration of the Cirrus Eval board for this chip. */
166 #ifdef CONFIG_ARCH_CLPS7500
167 static unsigned int netcard_portlist[] __initdata =
168 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
169 static unsigned int cs8900_irq_map[] = {12,0,0,0};
170 #elif defined(CONFIG_SH_HICOSH4)
171 static unsigned int netcard_portlist[] __initdata =
173 static unsigned int cs8900_irq_map[] = {1,0,0,0};
174 #elif defined(CONFIG_ARCH_IXDP2X01)
176 static unsigned int netcard_portlist[] __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
177 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
178 #elif defined(CONFIG_ARCH_PNX010X)
180 #include <asm/arch/gpio.h>
181 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
182 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
183 static unsigned int netcard_portlist[] __initdata = {CIRRUS_DEFAULT_BASE, 0};
184 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
186 static unsigned int netcard_portlist[] __initdata =
187 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
188 static unsigned int cs8900_irq_map[] = {10,11,12,5};
192 static unsigned int net_debug = DEBUGGING;
194 #define net_debug 0 /* gcc will remove all the debug code for us */
197 /* The number of low I/O ports used by the ethercard. */
198 #define NETCARD_IO_EXTENT 16
200 /* we allow the user to override various values normally set in the EEPROM */
201 #define FORCE_RJ45 0x0001 /* pick one of these three */
202 #define FORCE_AUI 0x0002
203 #define FORCE_BNC 0x0004
205 #define FORCE_AUTO 0x0010 /* pick one of these three */
206 #define FORCE_HALF 0x0020
207 #define FORCE_FULL 0x0030
209 /* Information that need to be kept for each board. */
211 struct net_device_stats stats;
212 int chip_type; /* one of: CS8900, CS8920, CS8920M */
213 char chip_revision; /* revision letter of the chip ('A'...) */
214 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
215 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
216 int adapter_cnf; /* adapter configuration from EEPROM */
217 int isa_config; /* ISA configuration from EEPROM */
218 int irq_map; /* IRQ map from EEPROM */
219 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
220 int curr_rx_cfg; /* a copy of PP_RxCFG */
221 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
222 int send_underrun; /* keep track of how many underruns in a row we get */
223 int force; /* force various values; see FORCE* above. */
226 int use_dma; /* Flag: we're using dma */
227 int dma; /* DMA channel */
228 int dmasize; /* 16 or 64 */
229 unsigned char *dma_buff; /* points to the beginning of the buffer */
230 unsigned char *end_dma_buff; /* points to the end of the buffer */
231 unsigned char *rx_dma_ptr; /* points to the next packet */
235 /* Index to functions, as function prototypes. */
237 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
238 static int net_open(struct net_device *dev);
239 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
240 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
241 static void set_multicast_list(struct net_device *dev);
242 static void net_timeout(struct net_device *dev);
243 static void net_rx(struct net_device *dev);
244 static int net_close(struct net_device *dev);
245 static struct net_device_stats *net_get_stats(struct net_device *dev);
246 static void reset_chip(struct net_device *dev);
247 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
248 static int get_eeprom_cksum(int off, int len, int *buffer);
249 static int set_mac_address(struct net_device *dev, void *addr);
250 static void count_rx_errors(int status, struct net_local *lp);
251 #ifdef CONFIG_NET_POLL_CONTROLLER
252 static void net_poll_controller(struct net_device *dev);
255 static void get_dma_channel(struct net_device *dev);
256 static void release_dma_buff(struct net_local *lp);
259 /* Example routines you must write ;->. */
260 #define tx_done(dev) 1
263 * Permit 'cs89x0_dma=N' in the kernel boot environment
265 #if !defined(MODULE) && (ALLOW_DMA != 0)
266 static int g_cs89x0_dma;
268 static int __init dma_fn(char *str)
270 g_cs89x0_dma = simple_strtol(str,NULL,0);
274 __setup("cs89x0_dma=", dma_fn);
275 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
278 static int g_cs89x0_media__force;
280 static int __init media_fn(char *str)
282 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
283 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
284 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
288 __setup("cs89x0_media=", media_fn);
291 /* Check for a network adaptor of this type, and return '0' iff one exists.
292 If dev->base_addr == 0, probe all likely locations.
293 If dev->base_addr == 1, always return failure.
294 If dev->base_addr == 2, allocate space for the device and return success
295 (detachable devices only).
299 struct net_device * __init cs89x0_probe(int unit)
301 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
308 return ERR_PTR(-ENODEV);
310 sprintf(dev->name, "eth%d", unit);
311 netdev_boot_setup_check(dev);
316 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
318 if (io > 0x1ff) { /* Check a single specified location. */
319 err = cs89x0_probe1(dev, io, 0);
320 } else if (io != 0) { /* Don't probe at all. */
323 for (port = netcard_portlist; *port; port++) {
324 if (cs89x0_probe1(dev, *port, 0) == 0)
336 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
341 #if defined(CONFIG_ARCH_IXDP2X01)
343 readword(unsigned long base_addr, int portno)
345 return (u16)__raw_readl(base_addr + (portno << 1));
349 writeword(unsigned long base_addr, int portno, int value)
351 __raw_writel((u16)value, base_addr + (portno << 1));
354 #if defined(CONFIG_ARCH_PNX010X)
356 readword(unsigned long base_addr, int portno)
358 return inw(base_addr + (portno << 1));
362 writeword(unsigned long base_addr, int portno, int value)
364 outw(value, base_addr + (portno << 1));
368 readword(unsigned long base_addr, int portno)
370 return inw(base_addr + portno);
374 writeword(unsigned long base_addr, int portno, int value)
376 outw(value, base_addr + portno);
382 readwords(unsigned long base_addr, int portno, void *buf, int length)
384 u8 *buf8 = (u8 *)buf;
389 tmp32 = readword(base_addr, portno);
391 *buf8++ = (u8)(tmp32 >> 8);
396 writewords(unsigned long base_addr, int portno, void *buf, int length)
398 u8 *buf8 = (u8 *)buf;
404 tmp32 |= (*buf8++) << 8;
405 writeword(base_addr, portno, tmp32);
410 readreg(struct net_device *dev, int regno)
412 writeword(dev->base_addr, ADD_PORT, regno);
413 return readword(dev->base_addr, DATA_PORT);
417 writereg(struct net_device *dev, int regno, int value)
419 writeword(dev->base_addr, ADD_PORT, regno);
420 writeword(dev->base_addr, DATA_PORT, value);
424 wait_eeprom_ready(struct net_device *dev)
426 int timeout = jiffies;
427 /* check to see if the EEPROM is ready, a timeout is used -
428 just in case EEPROM is ready when SI_BUSY in the
429 PP_SelfST is clear */
430 while(readreg(dev, PP_SelfST) & SI_BUSY)
431 if (jiffies - timeout >= 40)
437 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
441 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
442 for (i = 0; i < len; i++) {
443 if (wait_eeprom_ready(dev) < 0) return -1;
444 /* Now send the EEPROM read command and EEPROM location to read */
445 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
446 if (wait_eeprom_ready(dev) < 0) return -1;
447 buffer[i] = readreg(dev, PP_EEData);
448 if (net_debug > 3) printk("%04x ", buffer[i]);
450 if (net_debug > 3) printk("\n");
455 get_eeprom_cksum(int off, int len, int *buffer)
460 for (i = 0; i < len; i++)
468 #ifdef CONFIG_NET_POLL_CONTROLLER
470 * Polling receive - used by netconsole and other diagnostic tools
471 * to allow network i/o with interrupts disabled.
473 static void net_poll_controller(struct net_device *dev)
475 disable_irq(dev->irq);
476 net_interrupt(dev->irq, dev, NULL);
477 enable_irq(dev->irq);
481 /* This is the real probe routine. Linux has a history of friendly device
482 probes on the ISA bus. A good device probes avoids doing writes, and
483 verifies that the correct device exists and functions.
488 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
490 struct net_local *lp = netdev_priv(dev);
491 static unsigned version_printed;
494 unsigned rev_type = 0;
495 int eeprom_buff[CHKSUM_LEN];
498 SET_MODULE_OWNER(dev);
499 /* Initialize the device structure. */
501 memset(lp, 0, sizeof(*lp));
502 spin_lock_init(&lp->lock);
507 lp->dma = g_cs89x0_dma;
508 lp->dmasize = 16; /* Could make this an option... */
511 lp->force = g_cs89x0_media__force;
515 #ifdef CONFIG_ARCH_PNX010X
518 /* Map GPIO registers for the pins connected to the CS8900a. */
519 if (map_cirrus_gpio() < 0)
524 /* Map event-router registers. */
525 if (map_event_router() < 0)
531 unmap_event_router();
533 dev->base_addr = ioaddr;
535 for (i = 0 ; i < 3 ; i++)
539 /* Grab the region so we can find another board if autoIRQ fails. */
540 /* WTF is going on here? */
541 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
542 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
543 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
548 #ifdef CONFIG_SH_HICOSH4
549 /* truely reset the chip */
550 writeword(ioaddr, ADD_PORT, 0x0114);
551 writeword(ioaddr, DATA_PORT, 0x0040);
554 /* if they give us an odd I/O address, then do ONE write to
555 the address port, to get it back to address zero, where we
556 expect to find the EISA signature word. An IO with a base of 0x3
557 will skip the test for the ADD_PORT. */
560 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
561 if ((ioaddr & 2) != 2)
562 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
563 printk(KERN_ERR "%s: bad signature 0x%x\n",
564 dev->name, readword(ioaddr & ~3, ADD_PORT));
569 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
570 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
573 writeword(ioaddr, ADD_PORT, PP_ChipID);
575 tmp = readword(ioaddr, DATA_PORT);
576 if (tmp != CHIP_EISA_ID_SIG) {
577 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
578 CHIP_EISA_ID_SIG_STR "\n",
579 dev->name, ioaddr, DATA_PORT, tmp);
584 /* Fill in the 'dev' fields. */
585 dev->base_addr = ioaddr;
587 /* get the chip type */
588 rev_type = readreg(dev, PRODUCT_ID_ADD);
589 lp->chip_type = rev_type &~ REVISON_BITS;
590 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
592 /* Check the chip type and revision in order to set the correct send command
593 CS8920 revision C and CS8900 revision F can use the faster send. */
594 lp->send_cmd = TX_AFTER_381;
595 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
596 lp->send_cmd = TX_NOW;
597 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
598 lp->send_cmd = TX_NOW;
600 if (net_debug && version_printed++ == 0)
603 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
605 lp->chip_type==CS8900?'0':'2',
606 lp->chip_type==CS8920M?"M":"",
612 /* Here we read the current configuration of the chip. If there
613 is no Extended EEPROM then the idea is to not disturb the chip
614 configuration, it should have been correctly setup by automatic
615 EEPROM read on reset. So, if the chip says it read the EEPROM
616 the driver will always do *something* instead of complain that
619 #ifdef CONFIG_SH_HICOSH4
621 /* For the HiCO.SH4 board, things are different: we don't
622 have EEPROM, but there is some data in flash, so we go
623 get it there directly (MAC). */
626 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
628 confd = (__u16*) 0xa0013fc0;
630 confd = (__u16*) 0xa001ffc0;
632 cnt = (*confd++ & 0x00ff) >> 1;
636 switch (j & 0x0fff) {
638 for (i = 0; i < ETH_ALEN/2; i++) {
639 dev->dev_addr[i*2] = confd[i] & 0xFF;
640 dev->dev_addr[i*2+1] = confd[i] >> 8;
651 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
652 (EEPROM_OK|EEPROM_PRESENT)) {
654 for (i=0; i < ETH_ALEN/2; i++) {
656 Addr = readreg(dev, PP_IA+i*2);
657 dev->dev_addr[i*2] = Addr & 0xFF;
658 dev->dev_addr[i*2+1] = Addr >> 8;
661 /* Load the Adapter Configuration.
662 Note: Barring any more specific information from some
663 other source (ie EEPROM+Schematics), we would not know
664 how to operate a 10Base2 interface on the AUI port.
665 However, since we do read the status of HCB1 and use
666 settings that always result in calls to control_dc_dc(dev,0)
667 a BNC interface should work if the enable pin
668 (dc/dc converter) is on HCB1. It will be called AUI
672 i = readreg(dev, PP_LineCTL);
673 /* Preserve the setting of the HCB1 pin. */
674 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
675 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
676 /* Save the sqelch bit */
677 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
678 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
679 /* Check if the card is in 10Base-t only mode */
680 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
681 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
682 /* Check if the card is in AUI only mode */
683 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
684 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
685 /* Check if the card is in Auto mode. */
686 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
687 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
688 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
691 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
692 dev->name, i, lp->adapter_cnf);
694 /* IRQ. Other chips already probe, see below. */
695 if (lp->chip_type == CS8900)
696 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
698 printk( "[Cirrus EEPROM] ");
703 /* First check to see if an EEPROM is attached. */
704 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
706 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
709 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
710 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
711 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
712 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
713 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
714 /* Check if the chip was able to read its own configuration starting
716 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
717 (EEPROM_OK|EEPROM_PRESENT))
718 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
721 /* This reads an extended EEPROM that is not documented
722 in the CS8900 datasheet. */
724 /* get transmission control word but keep the autonegotiation bits */
725 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
726 /* Store adapter configuration */
727 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
728 /* Store ISA configuration */
729 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
730 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
732 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
733 /* store the initial memory base address */
734 for (i = 0; i < ETH_ALEN/2; i++) {
735 dev->dev_addr[i*2] = eeprom_buff[i];
736 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
739 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
740 dev->name, lp->adapter_cnf);
743 /* allow them to force multiple transceivers. If they force multiple, autosense */
746 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
747 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
748 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
749 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
750 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
751 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
752 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
756 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
757 dev->name, lp->force, lp->adapter_cnf);
759 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
761 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
763 /* FIXME: we don't set the Ethernet address on the command line. Use
764 ifconfig IFACE hw ether AABBCCDDEEFF */
766 printk(KERN_INFO "cs89x0 media %s%s%s",
767 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
768 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
769 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
771 lp->irq_map = 0xffff;
773 /* If this is a CS8900 then no pnp soft */
774 if (lp->chip_type != CS8900 &&
775 /* Check if the ISA IRQ has been set */
776 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
777 (i != 0 && i < CS8920_NO_INTS))) {
781 i = lp->isa_config & INT_NO_MASK;
782 if (lp->chip_type == CS8900) {
783 #if defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX010X)
784 i = cs8900_irq_map[0];
786 /* Translate the IRQ using the IRQ mapping table. */
787 if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
788 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
790 i = cs8900_irq_map[i];
792 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
794 int irq_map_buff[IRQ_MAP_LEN/2];
796 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
798 irq_map_buff) >= 0) {
799 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
800 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
808 printk(" IRQ %d", dev->irq);
812 get_dma_channel(dev);
813 printk(", DMA %d", dev->dma);
818 printk(", programmed I/O");
821 /* print the ethernet address. */
823 for (i = 0; i < ETH_ALEN; i++)
825 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
828 dev->open = net_open;
829 dev->stop = net_close;
830 dev->tx_timeout = net_timeout;
831 dev->watchdog_timeo = HZ;
832 dev->hard_start_xmit = net_send_packet;
833 dev->get_stats = net_get_stats;
834 dev->set_multicast_list = set_multicast_list;
835 dev->set_mac_address = set_mac_address;
836 #ifdef CONFIG_NET_POLL_CONTROLLER
837 dev->poll_controller = net_poll_controller;
842 printk("cs89x0_probe1() successful\n");
844 retval = register_netdev(dev);
849 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
851 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
857 /*********************************
858 * This page contains DMA routines
859 **********************************/
863 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
866 get_dma_channel(struct net_device *dev)
868 struct net_local *lp = netdev_priv(dev);
872 lp->isa_config |= ISA_RxDMA;
874 if ((lp->isa_config & ANY_ISA_DMA) == 0)
876 dev->dma = lp->isa_config & DMA_NO_MASK;
877 if (lp->chip_type == CS8900)
879 if (dev->dma < 5 || dev->dma > 7) {
880 lp->isa_config &= ~ANY_ISA_DMA;
888 write_dma(struct net_device *dev, int chip_type, int dma)
890 struct net_local *lp = netdev_priv(dev);
891 if ((lp->isa_config & ANY_ISA_DMA) == 0)
893 if (chip_type == CS8900) {
894 writereg(dev, PP_CS8900_ISADMA, dma-5);
896 writereg(dev, PP_CS8920_ISADMA, dma);
901 set_dma_cfg(struct net_device *dev)
903 struct net_local *lp = netdev_priv(dev);
906 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
908 printk("set_dma_cfg(): no DMA\n");
911 if (lp->isa_config & ISA_RxDMA) {
912 lp->curr_rx_cfg |= RX_DMA_ONLY;
914 printk("set_dma_cfg(): RX_DMA_ONLY\n");
916 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
918 printk("set_dma_cfg(): AUTO_RX_DMA\n");
924 dma_bufcfg(struct net_device *dev)
926 struct net_local *lp = netdev_priv(dev);
928 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
934 dma_busctl(struct net_device *dev)
937 struct net_local *lp = netdev_priv(dev);
939 if (lp->isa_config & ANY_ISA_DMA)
940 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
941 if (lp->isa_config & DMA_BURST)
942 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
943 if (lp->dmasize == 64)
944 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
945 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
951 dma_rx(struct net_device *dev)
953 struct net_local *lp = netdev_priv(dev);
956 unsigned char *bp = lp->rx_dma_ptr;
958 status = bp[0] + (bp[1]<<8);
959 length = bp[2] + (bp[3]<<8);
962 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
963 dev->name, (unsigned long)bp, status, length);
965 if ((status & RX_OK) == 0) {
966 count_rx_errors(status, lp);
967 goto skip_this_frame;
970 /* Malloc up new buffer. */
971 skb = dev_alloc_skb(length + 2);
973 if (net_debug) /* I don't think we want to do this to a stressed system */
974 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
975 lp->stats.rx_dropped++;
977 /* AKPM: advance bp to the next frame */
979 bp += (length + 3) & ~3;
980 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
984 skb_reserve(skb, 2); /* longword align L3 header */
987 if (bp + length > lp->end_dma_buff) {
988 int semi_cnt = lp->end_dma_buff - bp;
989 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
990 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
993 memcpy(skb_put(skb,length), bp, length);
995 bp += (length + 3) & ~3;
996 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1000 printk( "%s: received %d byte DMA packet of type %x\n",
1002 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1004 skb->protocol=eth_type_trans(skb,dev);
1006 dev->last_rx = jiffies;
1007 lp->stats.rx_packets++;
1008 lp->stats.rx_bytes += length;
1011 #endif /* ALLOW_DMA */
1013 void __init reset_chip(struct net_device *dev)
1015 #ifndef CONFIG_ARCH_IXDP2X01
1016 struct net_local *lp = netdev_priv(dev);
1017 int ioaddr = dev->base_addr;
1019 int reset_start_time;
1021 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1026 #ifndef CONFIG_ARCH_IXDP2X01
1027 if (lp->chip_type != CS8900) {
1028 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1029 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1030 outb(dev->irq, ioaddr + DATA_PORT);
1031 outb(0, ioaddr + DATA_PORT + 1);
1033 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1034 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1035 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1037 #endif /* IXDP2x01 */
1039 /* Wait until the chip is reset */
1040 reset_start_time = jiffies;
1041 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1047 control_dc_dc(struct net_device *dev, int on_not_off)
1049 struct net_local *lp = netdev_priv(dev);
1050 unsigned int selfcontrol;
1051 int timenow = jiffies;
1052 /* control the DC to DC convertor in the SelfControl register.
1053 Note: This is hooked up to a general purpose pin, might not
1054 always be a DC to DC convertor. */
1056 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1057 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1058 selfcontrol |= HCB1;
1060 selfcontrol &= ~HCB1;
1061 writereg(dev, PP_SelfCTL, selfcontrol);
1063 /* Wait for the DC/DC converter to power up - 500ms */
1064 while (jiffies - timenow < HZ)
1068 #define DETECTED_NONE 0
1069 #define DETECTED_RJ45H 1
1070 #define DETECTED_RJ45F 2
1071 #define DETECTED_AUI 3
1072 #define DETECTED_BNC 4
1075 detect_tp(struct net_device *dev)
1077 struct net_local *lp = netdev_priv(dev);
1078 int timenow = jiffies;
1081 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1083 /* If connected to another full duplex capable 10-Base-T card the link pulses
1084 seem to be lost when the auto detect bit in the LineCTL is set.
1085 To overcome this the auto detect bit will be cleared whilst testing the
1086 10-Base-T interface. This would not be necessary for the sparrow chip but
1087 is simpler to do it anyway. */
1088 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1089 control_dc_dc(dev, 0);
1091 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1092 for (timenow = jiffies; jiffies - timenow < 15; )
1094 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1095 return DETECTED_NONE;
1097 if (lp->chip_type == CS8900) {
1098 switch (lp->force & 0xf0) {
1101 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1102 return DETECTED_NONE;
1104 /* CS8900 doesn't support AUTO, change to HALF*/
1106 lp->force &= ~FORCE_AUTO;
1107 lp->force |= FORCE_HALF;
1112 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1115 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1117 switch (lp->force & 0xf0) {
1119 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1122 lp->auto_neg_cnf = 0;
1125 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1129 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1131 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1132 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1133 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1134 if (jiffies - timenow > 4000) {
1135 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1140 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1143 return DETECTED_RJ45F;
1145 return DETECTED_RJ45H;
1148 /* send a test packet - return true if carrier bits are ok */
1150 send_test_pkt(struct net_device *dev)
1152 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1153 0, 46, /* A 46 in network order */
1154 0, 0, /* DSAP=0 & SSAP=0 fields */
1155 0xf3, 0 /* Control (Test Req + P bit set) */ };
1156 long timenow = jiffies;
1158 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1160 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1161 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1163 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1164 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1166 /* Test to see if the chip has allocated memory for the packet */
1167 while (jiffies - timenow < 5)
1168 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1170 if (jiffies - timenow >= 5)
1171 return 0; /* this shouldn't happen */
1173 /* Write the contents of the packet */
1174 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1176 if (net_debug > 1) printk("Sending test packet ");
1177 /* wait a couple of jiffies for packet to be received */
1178 for (timenow = jiffies; jiffies - timenow < 3; )
1180 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1181 if (net_debug > 1) printk("succeeded\n");
1184 if (net_debug > 1) printk("failed\n");
1190 detect_aui(struct net_device *dev)
1192 struct net_local *lp = netdev_priv(dev);
1194 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1195 control_dc_dc(dev, 0);
1197 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1199 if (send_test_pkt(dev))
1200 return DETECTED_AUI;
1202 return DETECTED_NONE;
1206 detect_bnc(struct net_device *dev)
1208 struct net_local *lp = netdev_priv(dev);
1210 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1211 control_dc_dc(dev, 1);
1213 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1215 if (send_test_pkt(dev))
1216 return DETECTED_BNC;
1218 return DETECTED_NONE;
1223 write_irq(struct net_device *dev, int chip_type, int irq)
1227 if (chip_type == CS8900) {
1228 /* Search the mapping table for the corresponding IRQ pin. */
1229 for (i = 0; i != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++)
1230 if (cs8900_irq_map[i] == irq)
1233 if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
1235 writereg(dev, PP_CS8900_ISAINT, i);
1237 writereg(dev, PP_CS8920_ISAINT, irq);
1241 /* Open/initialize the board. This is called (in the current kernel)
1242 sometime after booting when the 'ifconfig' program is run.
1244 This routine should set everything up anew at each open, even
1245 registers that "should" only need to be set once at boot, so that
1246 there is non-reboot way to recover if something goes wrong.
1249 /* AKPM: do we need to do any locking here? */
1252 net_open(struct net_device *dev)
1254 struct net_local *lp = netdev_priv(dev);
1259 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1261 /* Allow interrupts to be generated by the chip */
1262 /* Cirrus' release had this: */
1264 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1266 /* And 2.3.47 had this: */
1267 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1269 for (i = 2; i < CS8920_NO_INTS; i++) {
1270 if ((1 << i) & lp->irq_map) {
1271 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1273 write_irq(dev, lp->chip_type, i);
1274 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1280 if (i >= CS8920_NO_INTS) {
1281 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1282 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1290 #if !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX010X)
1291 if (((1 << dev->irq) & lp->irq_map) == 0) {
1292 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1293 dev->name, dev->irq, lp->irq_map);
1298 /* FIXME: Cirrus' release had this: */
1299 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1300 /* And 2.3.47 had this: */
1302 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1304 write_irq(dev, lp->chip_type, dev->irq);
1305 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1308 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1315 if (lp->isa_config & ANY_ISA_DMA) {
1316 unsigned long flags;
1317 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1318 get_order(lp->dmasize * 1024));
1320 if (!lp->dma_buff) {
1321 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1324 if (net_debug > 1) {
1325 printk( "%s: dma %lx %lx\n",
1327 (unsigned long)lp->dma_buff,
1328 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1330 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1331 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1332 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1335 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1336 if (request_dma(dev->dma, dev->name)) {
1337 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1340 write_dma(dev, lp->chip_type, dev->dma);
1341 lp->rx_dma_ptr = lp->dma_buff;
1342 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1343 spin_lock_irqsave(&lp->lock, flags);
1344 disable_dma(dev->dma);
1345 clear_dma_ff(dev->dma);
1346 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1347 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1348 set_dma_count(dev->dma, lp->dmasize*1024);
1349 enable_dma(dev->dma);
1350 spin_unlock_irqrestore(&lp->lock, flags);
1353 #endif /* ALLOW_DMA */
1355 /* set the Ethernet address */
1356 for (i=0; i < ETH_ALEN/2; i++)
1357 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1359 /* while we're testing the interface, leave interrupts disabled */
1360 writereg(dev, PP_BusCTL, MEMORY_ON);
1362 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1363 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1364 lp->linectl = LOW_RX_SQUELCH;
1368 /* check to make sure that they have the "right" hardware available */
1369 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1370 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1371 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1372 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1373 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1375 #ifdef CONFIG_ARCH_PNX010X
1376 result = A_CNF_10B_T;
1379 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1382 release_dma_buff(lp);
1384 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1385 free_irq(dev->irq, dev);
1390 /* set the hardware to the configured choice */
1391 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1392 case A_CNF_MEDIA_10B_T:
1393 result = detect_tp(dev);
1394 if (result==DETECTED_NONE) {
1395 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1396 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1397 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1400 case A_CNF_MEDIA_AUI:
1401 result = detect_aui(dev);
1402 if (result==DETECTED_NONE) {
1403 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1404 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1405 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1408 case A_CNF_MEDIA_10B_2:
1409 result = detect_bnc(dev);
1410 if (result==DETECTED_NONE) {
1411 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1412 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1413 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1416 case A_CNF_MEDIA_AUTO:
1417 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1418 if (lp->adapter_cnf & A_CNF_10B_T)
1419 if ((result = detect_tp(dev)) != DETECTED_NONE)
1421 if (lp->adapter_cnf & A_CNF_AUI)
1422 if ((result = detect_aui(dev)) != DETECTED_NONE)
1424 if (lp->adapter_cnf & A_CNF_10B_2)
1425 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1427 printk(KERN_ERR "%s: no media detected\n", dev->name);
1432 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1434 case DETECTED_RJ45H:
1435 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1437 case DETECTED_RJ45F:
1438 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1441 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1444 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1448 /* Turn on both receive and transmit operations */
1449 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1451 /* Receive only error free packets addressed to this card */
1453 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1455 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1457 if (lp->isa_config & STREAM_TRANSFER)
1458 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1462 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1464 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1465 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1467 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1471 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1473 /* now that we've got our act together, enable everything */
1474 writereg(dev, PP_BusCTL, ENABLE_IRQ
1475 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1480 netif_start_queue(dev);
1482 printk("cs89x0: net_open() succeeded\n");
1488 static void net_timeout(struct net_device *dev)
1490 /* If we get here, some higher level has decided we are broken.
1491 There should really be a "kick me" function call instead. */
1492 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1493 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1494 /* Try to restart the adaptor. */
1495 netif_wake_queue(dev);
1498 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1500 struct net_local *lp = netdev_priv(dev);
1502 if (net_debug > 3) {
1503 printk("%s: sent %d byte packet of type %x\n",
1504 dev->name, skb->len,
1505 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1508 /* keep the upload from being interrupted, since we
1509 ask the chip to start transmitting before the
1510 whole packet has been completely uploaded. */
1512 spin_lock_irq(&lp->lock);
1513 netif_stop_queue(dev);
1515 /* initiate a transmit sequence */
1516 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1517 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1519 /* Test to see if the chip has allocated memory for the packet */
1520 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1522 * Gasp! It hasn't. But that shouldn't happen since
1523 * we're waiting for TxOk, so return 1 and requeue this packet.
1526 spin_unlock_irq(&lp->lock);
1527 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1530 /* Write the contents of the packet */
1531 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1532 spin_unlock_irq(&lp->lock);
1533 lp->stats.tx_bytes += skb->len;
1534 dev->trans_start = jiffies;
1535 dev_kfree_skb (skb);
1538 * We DO NOT call netif_wake_queue() here.
1539 * We also DO NOT call netif_start_queue().
1541 * Either of these would cause another bottom half run through
1542 * net_send_packet() before this packet has fully gone out. That causes
1543 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1544 * a dog. We just return and wait for the Tx completion interrupt handler
1545 * to restart the netdevice layer
1551 /* The typical workload of the driver:
1552 Handle the network interface interrupts. */
1554 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1556 struct net_device *dev = dev_id;
1557 struct net_local *lp;
1561 ioaddr = dev->base_addr;
1562 lp = netdev_priv(dev);
1564 /* we MUST read all the events out of the ISQ, otherwise we'll never
1565 get interrupted again. As a consequence, we can't have any limit
1566 on the number of times we loop in the interrupt handler. The
1567 hardware guarantees that eventually we'll run out of events. Of
1568 course, if you're on a slow machine, and packets are arriving
1569 faster than you can read them off, you're screwed. Hasta la
1571 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1572 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1574 switch(status & ISQ_EVENT_MASK) {
1575 case ISQ_RECEIVER_EVENT:
1576 /* Got a packet(s). */
1579 case ISQ_TRANSMITTER_EVENT:
1580 lp->stats.tx_packets++;
1581 netif_wake_queue(dev); /* Inform upper layers. */
1582 if ((status & ( TX_OK |
1586 TX_16_COL)) != TX_OK) {
1587 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1588 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1589 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1590 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1591 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1594 case ISQ_BUFFER_EVENT:
1595 if (status & READY_FOR_TX) {
1596 /* we tried to transmit a packet earlier,
1597 but inexplicably ran out of buffers.
1598 That shouldn't happen since we only ever
1599 load one packet. Shrug. Do the right
1601 netif_wake_queue(dev); /* Inform upper layers. */
1603 if (status & TX_UNDERRUN) {
1604 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1605 lp->send_underrun++;
1606 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1607 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1608 /* transmit cycle is done, although
1609 frame wasn't transmitted - this
1610 avoids having to wait for the upper
1611 layers to timeout on us, in the
1612 event of a tx underrun */
1613 netif_wake_queue(dev); /* Inform upper layers. */
1616 if (lp->use_dma && (status & RX_DMA)) {
1617 int count = readreg(dev, PP_DmaFrameCnt);
1620 printk("%s: receiving %d DMA frames\n", dev->name, count);
1621 if (net_debug > 2 && count >1)
1622 printk("%s: receiving %d DMA frames\n", dev->name, count);
1625 count = readreg(dev, PP_DmaFrameCnt);
1626 if (net_debug > 2 && count > 0)
1627 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1632 case ISQ_RX_MISS_EVENT:
1633 lp->stats.rx_missed_errors += (status >>6);
1635 case ISQ_TX_COL_EVENT:
1636 lp->stats.collisions += (status >>6);
1640 return IRQ_RETVAL(handled);
1644 count_rx_errors(int status, struct net_local *lp)
1646 lp->stats.rx_errors++;
1647 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1648 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1649 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1651 lp->stats.rx_crc_errors++;
1652 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1656 /* We have a good packet(s), get it/them out of the buffers. */
1658 net_rx(struct net_device *dev)
1660 struct net_local *lp = netdev_priv(dev);
1661 struct sk_buff *skb;
1664 int ioaddr = dev->base_addr;
1665 status = readword(ioaddr, RX_FRAME_PORT);
1666 length = readword(ioaddr, RX_FRAME_PORT);
1668 if ((status & RX_OK) == 0) {
1669 count_rx_errors(status, lp);
1673 /* Malloc up new buffer. */
1674 skb = dev_alloc_skb(length + 2);
1676 #if 0 /* Again, this seems a cruel thing to do */
1677 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1679 lp->stats.rx_dropped++;
1682 skb_reserve(skb, 2); /* longword align L3 header */
1685 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1687 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1689 if (net_debug > 3) {
1690 printk( "%s: received %d byte packet of type %x\n",
1692 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1695 skb->protocol=eth_type_trans(skb,dev);
1697 dev->last_rx = jiffies;
1698 lp->stats.rx_packets++;
1699 lp->stats.rx_bytes += length;
1703 static void release_dma_buff(struct net_local *lp)
1706 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1707 lp->dma_buff = NULL;
1712 /* The inverse routine to net_open(). */
1714 net_close(struct net_device *dev)
1717 struct net_local *lp = netdev_priv(dev);
1720 netif_stop_queue(dev);
1722 writereg(dev, PP_RxCFG, 0);
1723 writereg(dev, PP_TxCFG, 0);
1724 writereg(dev, PP_BufCFG, 0);
1725 writereg(dev, PP_BusCTL, 0);
1727 free_irq(dev->irq, dev);
1730 if (lp->use_dma && lp->dma) {
1732 release_dma_buff(lp);
1736 /* Update the statistics here. */
1740 /* Get the current statistics. This may be called with the card open or
1742 static struct net_device_stats *
1743 net_get_stats(struct net_device *dev)
1745 struct net_local *lp = netdev_priv(dev);
1746 unsigned long flags;
1748 spin_lock_irqsave(&lp->lock, flags);
1749 /* Update the statistics from the device registers. */
1750 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1751 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1752 spin_unlock_irqrestore(&lp->lock, flags);
1757 static void set_multicast_list(struct net_device *dev)
1759 struct net_local *lp = netdev_priv(dev);
1760 unsigned long flags;
1762 spin_lock_irqsave(&lp->lock, flags);
1763 if(dev->flags&IFF_PROMISC)
1765 lp->rx_mode = RX_ALL_ACCEPT;
1767 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1769 /* The multicast-accept list is initialized to accept-all, and we
1770 rely on higher-level filtering for now. */
1771 lp->rx_mode = RX_MULTCAST_ACCEPT;
1776 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1778 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1779 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1780 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1781 spin_unlock_irqrestore(&lp->lock, flags);
1785 static int set_mac_address(struct net_device *dev, void *p)
1788 struct sockaddr *addr = p;
1791 if (netif_running(dev))
1794 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1797 printk("%s: Setting MAC address to ", dev->name);
1798 for (i = 0; i < dev->addr_len; i++)
1799 printk(" %2.2x", dev->dev_addr[i]);
1802 /* set the Ethernet address */
1803 for (i=0; i < ETH_ALEN/2; i++)
1804 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1811 static struct net_device *dev_cs89x0;
1814 * Support the 'debug' module parm even if we're compiled for non-debug to
1815 * avoid breaking someone's startup scripts
1821 static char media[8];
1822 static int duplex=-1;
1824 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1826 static int dmasize=16; /* or 64 */
1828 module_param(io, int, 0);
1829 module_param(irq, int, 0);
1830 module_param(debug, int, 0);
1831 module_param_string(media, media, sizeof(media), 0);
1832 module_param(duplex, int, 0);
1833 module_param(dma , int, 0);
1834 module_param(dmasize , int, 0);
1835 module_param(use_dma , int, 0);
1836 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1837 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1839 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1841 MODULE_PARM_DESC(debug, "(ignored)");
1843 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1844 /* No other value than -1 for duplex seems to be currently interpreted */
1845 MODULE_PARM_DESC(duplex, "(ignored)");
1847 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1848 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1849 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1851 MODULE_PARM_DESC(dma , "(ignored)");
1852 MODULE_PARM_DESC(dmasize , "(ignored)");
1853 MODULE_PARM_DESC(use_dma , "(ignored)");
1856 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1857 MODULE_LICENSE("GPL");
1861 * media=t - specify media type
1865 * duplex=0 - specify forced half/full/autonegotiate duplex
1866 * debug=# - debug level
1869 * Default Chip Configuration:
1870 * DMA Burst = enabled
1871 * IOCHRDY Enabled = enabled
1873 * CS8900 defaults to half-duplex if not specified on command-line
1874 * CS8920 defaults to autoneg if not specified on command-line
1875 * Use reset defaults for other config parameters
1878 * media type specified is supported (circuitry is present)
1879 * if memory address is > 1MB, then required mem decode hw is present
1880 * if 10B-2, then agent other than driver will enable DC/DC converter
1881 (hw or software util)
1889 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1890 struct net_local *lp;
1902 dev->base_addr = io;
1903 lp = netdev_priv(dev);
1907 lp->use_dma = use_dma;
1909 lp->dmasize = dmasize;
1913 spin_lock_init(&lp->lock);
1915 /* boy, they'd better get these right */
1916 if (!strcmp(media, "rj45"))
1917 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1918 else if (!strcmp(media, "aui"))
1919 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1920 else if (!strcmp(media, "bnc"))
1921 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1923 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1926 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1929 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1930 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1933 } else if (io <= 0x1ff) {
1939 if (use_dma && dmasize != 16 && dmasize != 64) {
1940 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1945 ret = cs89x0_probe1(dev, io, 1);
1957 cleanup_module(void)
1959 unregister_netdev(dev_cs89x0);
1960 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1961 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1962 free_netdev(dev_cs89x0);
1968 * version-control: t
1969 * kept-new-versions: 5