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
90 Dmitry Pervushin : dpervushin@ru.mvista.com
91 : PNX010X platform support
93 Deepak Saxena : dsaxena@plexity.net
94 : Intel IXDP2351 platform support
96 Dmitry Pervushin : dpervushin@ru.mvista.com
97 : PNX010X platform support
101 /* Always include 'config.h' first in case the user wants to turn on
102 or override something. */
103 #include <linux/module.h>
106 * Set this to zero to disable DMA code
108 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
109 * module options so we don't break any startup scripts.
111 #ifndef CONFIG_ISA_DMA_API
118 * Set this to zero to remove all the debug statements via
119 * dead code elimination
126 Crynwr packet driver epktisa.
128 Crystal Semiconductor data sheets.
132 #include <linux/errno.h>
133 #include <linux/netdevice.h>
134 #include <linux/etherdevice.h>
135 #include <linux/kernel.h>
136 #include <linux/types.h>
137 #include <linux/fcntl.h>
138 #include <linux/interrupt.h>
139 #include <linux/ioport.h>
140 #include <linux/in.h>
141 #include <linux/skbuff.h>
142 #include <linux/slab.h>
143 #include <linux/spinlock.h>
144 #include <linux/string.h>
145 #include <linux/init.h>
146 #include <linux/bitops.h>
147 #include <linux/delay.h>
149 #include <asm/system.h>
158 static char version[] __initdata =
159 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
161 #define DRV_NAME "cs89x0"
163 /* First, a few definitions that the brave might change.
164 A zero-terminated list of I/O addresses to be probed. Some special flags..
165 Addr & 1 = Read back the address port, look for signature and reset
166 the page window before probing
167 Addr & 3 = Reset the page window and probe
168 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
169 but it is possible that a Cirrus board could be plugged into the ISA
171 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
172 them to system IRQ numbers. This mapping is card specific and is set to
173 the configuration of the Cirrus Eval board for this chip. */
174 #ifdef CONFIG_ARCH_CLPS7500
175 static unsigned int netcard_portlist[] __used __initdata =
176 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
177 static unsigned int cs8900_irq_map[] = {12,0,0,0};
178 #elif defined(CONFIG_SH_HICOSH4)
179 static unsigned int netcard_portlist[] __used __initdata =
181 static unsigned int cs8900_irq_map[] = {1,0,0,0};
182 #elif defined(CONFIG_MACH_IXDP2351)
183 static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
184 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
186 #elif defined(CONFIG_ARCH_IXDP2X01)
188 static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
189 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
190 #elif defined(CONFIG_ARCH_PNX010X)
192 #include <asm/arch/gpio.h>
193 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
194 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
195 static unsigned int netcard_portlist[] __used __initdata = {CIRRUS_DEFAULT_BASE, 0};
196 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
198 static unsigned int netcard_portlist[] __used __initdata =
199 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
200 static unsigned int cs8900_irq_map[] = {10,11,12,5};
204 static unsigned int net_debug = DEBUGGING;
206 #define net_debug 0 /* gcc will remove all the debug code for us */
209 /* The number of low I/O ports used by the ethercard. */
210 #define NETCARD_IO_EXTENT 16
212 /* we allow the user to override various values normally set in the EEPROM */
213 #define FORCE_RJ45 0x0001 /* pick one of these three */
214 #define FORCE_AUI 0x0002
215 #define FORCE_BNC 0x0004
217 #define FORCE_AUTO 0x0010 /* pick one of these three */
218 #define FORCE_HALF 0x0020
219 #define FORCE_FULL 0x0030
221 /* Information that need to be kept for each board. */
223 struct net_device_stats stats;
224 int chip_type; /* one of: CS8900, CS8920, CS8920M */
225 char chip_revision; /* revision letter of the chip ('A'...) */
226 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
227 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
228 int adapter_cnf; /* adapter configuration from EEPROM */
229 int isa_config; /* ISA configuration from EEPROM */
230 int irq_map; /* IRQ map from EEPROM */
231 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
232 int curr_rx_cfg; /* a copy of PP_RxCFG */
233 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
234 int send_underrun; /* keep track of how many underruns in a row we get */
235 int force; /* force various values; see FORCE* above. */
238 int use_dma; /* Flag: we're using dma */
239 int dma; /* DMA channel */
240 int dmasize; /* 16 or 64 */
241 unsigned char *dma_buff; /* points to the beginning of the buffer */
242 unsigned char *end_dma_buff; /* points to the end of the buffer */
243 unsigned char *rx_dma_ptr; /* points to the next packet */
247 /* Index to functions, as function prototypes. */
249 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
250 static int net_open(struct net_device *dev);
251 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
252 static irqreturn_t net_interrupt(int irq, void *dev_id);
253 static void set_multicast_list(struct net_device *dev);
254 static void net_timeout(struct net_device *dev);
255 static void net_rx(struct net_device *dev);
256 static int net_close(struct net_device *dev);
257 static struct net_device_stats *net_get_stats(struct net_device *dev);
258 static void reset_chip(struct net_device *dev);
259 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
260 static int get_eeprom_cksum(int off, int len, int *buffer);
261 static int set_mac_address(struct net_device *dev, void *addr);
262 static void count_rx_errors(int status, struct net_local *lp);
263 #ifdef CONFIG_NET_POLL_CONTROLLER
264 static void net_poll_controller(struct net_device *dev);
267 static void get_dma_channel(struct net_device *dev);
268 static void release_dma_buff(struct net_local *lp);
271 /* Example routines you must write ;->. */
272 #define tx_done(dev) 1
275 * Permit 'cs89x0_dma=N' in the kernel boot environment
277 #if !defined(MODULE) && (ALLOW_DMA != 0)
278 static int g_cs89x0_dma;
280 static int __init dma_fn(char *str)
282 g_cs89x0_dma = simple_strtol(str,NULL,0);
286 __setup("cs89x0_dma=", dma_fn);
287 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
290 static int g_cs89x0_media__force;
292 static int __init media_fn(char *str)
294 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
295 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
296 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
300 __setup("cs89x0_media=", media_fn);
303 /* Check for a network adaptor of this type, and return '0' iff one exists.
304 If dev->base_addr == 0, probe all likely locations.
305 If dev->base_addr == 1, always return failure.
306 If dev->base_addr == 2, allocate space for the device and return success
307 (detachable devices only).
311 struct net_device * __init cs89x0_probe(int unit)
313 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
320 return ERR_PTR(-ENODEV);
322 sprintf(dev->name, "eth%d", unit);
323 netdev_boot_setup_check(dev);
328 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
330 if (io > 0x1ff) { /* Check a single specified location. */
331 err = cs89x0_probe1(dev, io, 0);
332 } else if (io != 0) { /* Don't probe at all. */
335 for (port = netcard_portlist; *port; port++) {
336 if (cs89x0_probe1(dev, *port, 0) == 0)
348 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
353 #if defined(CONFIG_MACH_IXDP2351)
355 readword(unsigned long base_addr, int portno)
357 return __raw_readw(base_addr + (portno << 1));
361 writeword(unsigned long base_addr, int portno, u16 value)
363 __raw_writew(value, base_addr + (portno << 1));
365 #elif defined(CONFIG_ARCH_IXDP2X01)
367 readword(unsigned long base_addr, int portno)
369 return __raw_readl(base_addr + (portno << 1));
373 writeword(unsigned long base_addr, int portno, u16 value)
375 __raw_writel(value, base_addr + (portno << 1));
377 #elif defined(CONFIG_ARCH_PNX010X)
379 readword(unsigned long base_addr, int portno)
381 return inw(base_addr + (portno << 1));
385 writeword(unsigned long base_addr, int portno, u16 value)
387 outw(value, base_addr + (portno << 1));
391 readword(unsigned long base_addr, int portno)
393 return inw(base_addr + portno);
397 writeword(unsigned long base_addr, int portno, u16 value)
399 outw(value, base_addr + portno);
404 readwords(unsigned long base_addr, int portno, void *buf, int length)
406 u8 *buf8 = (u8 *)buf;
411 tmp16 = readword(base_addr, portno);
413 *buf8++ = (u8)(tmp16 >> 8);
418 writewords(unsigned long base_addr, int portno, void *buf, int length)
420 u8 *buf8 = (u8 *)buf;
426 tmp16 |= (*buf8++) << 8;
427 writeword(base_addr, portno, tmp16);
432 readreg(struct net_device *dev, u16 regno)
434 writeword(dev->base_addr, ADD_PORT, regno);
435 return readword(dev->base_addr, DATA_PORT);
439 writereg(struct net_device *dev, u16 regno, u16 value)
441 writeword(dev->base_addr, ADD_PORT, regno);
442 writeword(dev->base_addr, DATA_PORT, value);
446 wait_eeprom_ready(struct net_device *dev)
448 int timeout = jiffies;
449 /* check to see if the EEPROM is ready, a timeout is used -
450 just in case EEPROM is ready when SI_BUSY in the
451 PP_SelfST is clear */
452 while(readreg(dev, PP_SelfST) & SI_BUSY)
453 if (jiffies - timeout >= 40)
459 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
463 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
464 for (i = 0; i < len; i++) {
465 if (wait_eeprom_ready(dev) < 0) return -1;
466 /* Now send the EEPROM read command and EEPROM location to read */
467 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
468 if (wait_eeprom_ready(dev) < 0) return -1;
469 buffer[i] = readreg(dev, PP_EEData);
470 if (net_debug > 3) printk("%04x ", buffer[i]);
472 if (net_debug > 3) printk("\n");
477 get_eeprom_cksum(int off, int len, int *buffer)
482 for (i = 0; i < len; i++)
490 #ifdef CONFIG_NET_POLL_CONTROLLER
492 * Polling receive - used by netconsole and other diagnostic tools
493 * to allow network i/o with interrupts disabled.
495 static void net_poll_controller(struct net_device *dev)
497 disable_irq(dev->irq);
498 net_interrupt(dev->irq, dev);
499 enable_irq(dev->irq);
503 /* This is the real probe routine. Linux has a history of friendly device
504 probes on the ISA bus. A good device probes avoids doing writes, and
505 verifies that the correct device exists and functions.
510 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
512 struct net_local *lp = netdev_priv(dev);
513 static unsigned version_printed;
516 unsigned rev_type = 0;
517 int eeprom_buff[CHKSUM_LEN];
519 DECLARE_MAC_BUF(mac);
521 /* Initialize the device structure. */
523 memset(lp, 0, sizeof(*lp));
524 spin_lock_init(&lp->lock);
529 lp->dma = g_cs89x0_dma;
530 lp->dmasize = 16; /* Could make this an option... */
533 lp->force = g_cs89x0_media__force;
537 #ifdef CONFIG_ARCH_PNX010X
540 /* Map GPIO registers for the pins connected to the CS8900a. */
541 if (map_cirrus_gpio() < 0)
546 /* Map event-router registers. */
547 if (map_event_router() < 0)
553 unmap_event_router();
555 dev->base_addr = ioaddr;
557 for (i = 0 ; i < 3 ; i++)
561 /* Grab the region so we can find another board if autoIRQ fails. */
562 /* WTF is going on here? */
563 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
564 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
565 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
570 #ifdef CONFIG_SH_HICOSH4
571 /* truely reset the chip */
572 writeword(ioaddr, ADD_PORT, 0x0114);
573 writeword(ioaddr, DATA_PORT, 0x0040);
576 /* if they give us an odd I/O address, then do ONE write to
577 the address port, to get it back to address zero, where we
578 expect to find the EISA signature word. An IO with a base of 0x3
579 will skip the test for the ADD_PORT. */
582 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
583 if ((ioaddr & 2) != 2)
584 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
585 printk(KERN_ERR "%s: bad signature 0x%x\n",
586 dev->name, readword(ioaddr & ~3, ADD_PORT));
593 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
594 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
595 writeword(ioaddr, ADD_PORT, PP_ChipID);
597 tmp = readword(ioaddr, DATA_PORT);
598 if (tmp != CHIP_EISA_ID_SIG) {
599 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
600 CHIP_EISA_ID_SIG_STR "\n",
601 dev->name, ioaddr, DATA_PORT, tmp);
606 /* Fill in the 'dev' fields. */
607 dev->base_addr = ioaddr;
609 /* get the chip type */
610 rev_type = readreg(dev, PRODUCT_ID_ADD);
611 lp->chip_type = rev_type &~ REVISON_BITS;
612 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
614 /* Check the chip type and revision in order to set the correct send command
615 CS8920 revision C and CS8900 revision F can use the faster send. */
616 lp->send_cmd = TX_AFTER_381;
617 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
618 lp->send_cmd = TX_NOW;
619 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
620 lp->send_cmd = TX_NOW;
622 if (net_debug && version_printed++ == 0)
625 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
627 lp->chip_type==CS8900?'0':'2',
628 lp->chip_type==CS8920M?"M":"",
634 /* Here we read the current configuration of the chip. If there
635 is no Extended EEPROM then the idea is to not disturb the chip
636 configuration, it should have been correctly setup by automatic
637 EEPROM read on reset. So, if the chip says it read the EEPROM
638 the driver will always do *something* instead of complain that
641 #ifdef CONFIG_SH_HICOSH4
643 /* For the HiCO.SH4 board, things are different: we don't
644 have EEPROM, but there is some data in flash, so we go
645 get it there directly (MAC). */
648 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
650 confd = (__u16*) 0xa0013fc0;
652 confd = (__u16*) 0xa001ffc0;
654 cnt = (*confd++ & 0x00ff) >> 1;
658 switch (j & 0x0fff) {
660 for (i = 0; i < ETH_ALEN/2; i++) {
661 dev->dev_addr[i*2] = confd[i] & 0xFF;
662 dev->dev_addr[i*2+1] = confd[i] >> 8;
673 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
674 (EEPROM_OK|EEPROM_PRESENT)) {
676 for (i=0; i < ETH_ALEN/2; i++) {
678 Addr = readreg(dev, PP_IA+i*2);
679 dev->dev_addr[i*2] = Addr & 0xFF;
680 dev->dev_addr[i*2+1] = Addr >> 8;
683 /* Load the Adapter Configuration.
684 Note: Barring any more specific information from some
685 other source (ie EEPROM+Schematics), we would not know
686 how to operate a 10Base2 interface on the AUI port.
687 However, since we do read the status of HCB1 and use
688 settings that always result in calls to control_dc_dc(dev,0)
689 a BNC interface should work if the enable pin
690 (dc/dc converter) is on HCB1. It will be called AUI
694 i = readreg(dev, PP_LineCTL);
695 /* Preserve the setting of the HCB1 pin. */
696 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
697 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
698 /* Save the sqelch bit */
699 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
700 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
701 /* Check if the card is in 10Base-t only mode */
702 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
703 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
704 /* Check if the card is in AUI only mode */
705 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
706 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
707 /* Check if the card is in Auto mode. */
708 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
709 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
710 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
713 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
714 dev->name, i, lp->adapter_cnf);
716 /* IRQ. Other chips already probe, see below. */
717 if (lp->chip_type == CS8900)
718 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
720 printk( "[Cirrus EEPROM] ");
725 /* First check to see if an EEPROM is attached. */
726 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
728 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
731 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
732 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
733 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
734 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
735 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
736 /* Check if the chip was able to read its own configuration starting
738 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
739 (EEPROM_OK|EEPROM_PRESENT))
740 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
743 /* This reads an extended EEPROM that is not documented
744 in the CS8900 datasheet. */
746 /* get transmission control word but keep the autonegotiation bits */
747 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
748 /* Store adapter configuration */
749 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
750 /* Store ISA configuration */
751 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
752 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
754 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
755 /* store the initial memory base address */
756 for (i = 0; i < ETH_ALEN/2; i++) {
757 dev->dev_addr[i*2] = eeprom_buff[i];
758 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
761 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
762 dev->name, lp->adapter_cnf);
765 /* allow them to force multiple transceivers. If they force multiple, autosense */
768 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
769 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
770 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
771 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
772 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
773 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
774 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
778 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
779 dev->name, lp->force, lp->adapter_cnf);
781 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
783 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
785 /* FIXME: we don't set the Ethernet address on the command line. Use
786 ifconfig IFACE hw ether AABBCCDDEEFF */
788 printk(KERN_INFO "cs89x0 media %s%s%s",
789 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
790 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
791 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
793 lp->irq_map = 0xffff;
795 /* If this is a CS8900 then no pnp soft */
796 if (lp->chip_type != CS8900 &&
797 /* Check if the ISA IRQ has been set */
798 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
799 (i != 0 && i < CS8920_NO_INTS))) {
803 i = lp->isa_config & INT_NO_MASK;
804 if (lp->chip_type == CS8900) {
805 #if defined(CONFIG_MACH_IXDP2351) || defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX010X)
806 i = cs8900_irq_map[0];
808 /* Translate the IRQ using the IRQ mapping table. */
809 if (i >= ARRAY_SIZE(cs8900_irq_map))
810 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
812 i = cs8900_irq_map[i];
814 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
816 int irq_map_buff[IRQ_MAP_LEN/2];
818 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
820 irq_map_buff) >= 0) {
821 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
822 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
830 printk(" IRQ %d", dev->irq);
834 get_dma_channel(dev);
835 printk(", DMA %d", dev->dma);
840 printk(", programmed I/O");
843 /* print the ethernet address. */
844 printk(", MAC %s", print_mac(mac, dev->dev_addr));
846 dev->open = net_open;
847 dev->stop = net_close;
848 dev->tx_timeout = net_timeout;
849 dev->watchdog_timeo = HZ;
850 dev->hard_start_xmit = net_send_packet;
851 dev->get_stats = net_get_stats;
852 dev->set_multicast_list = set_multicast_list;
853 dev->set_mac_address = set_mac_address;
854 #ifdef CONFIG_NET_POLL_CONTROLLER
855 dev->poll_controller = net_poll_controller;
860 printk("cs89x0_probe1() successful\n");
862 retval = register_netdev(dev);
867 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
869 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
875 /*********************************
876 * This page contains DMA routines
877 **********************************/
881 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
884 get_dma_channel(struct net_device *dev)
886 struct net_local *lp = netdev_priv(dev);
890 lp->isa_config |= ISA_RxDMA;
892 if ((lp->isa_config & ANY_ISA_DMA) == 0)
894 dev->dma = lp->isa_config & DMA_NO_MASK;
895 if (lp->chip_type == CS8900)
897 if (dev->dma < 5 || dev->dma > 7) {
898 lp->isa_config &= ~ANY_ISA_DMA;
906 write_dma(struct net_device *dev, int chip_type, int dma)
908 struct net_local *lp = netdev_priv(dev);
909 if ((lp->isa_config & ANY_ISA_DMA) == 0)
911 if (chip_type == CS8900) {
912 writereg(dev, PP_CS8900_ISADMA, dma-5);
914 writereg(dev, PP_CS8920_ISADMA, dma);
919 set_dma_cfg(struct net_device *dev)
921 struct net_local *lp = netdev_priv(dev);
924 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
926 printk("set_dma_cfg(): no DMA\n");
929 if (lp->isa_config & ISA_RxDMA) {
930 lp->curr_rx_cfg |= RX_DMA_ONLY;
932 printk("set_dma_cfg(): RX_DMA_ONLY\n");
934 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
936 printk("set_dma_cfg(): AUTO_RX_DMA\n");
942 dma_bufcfg(struct net_device *dev)
944 struct net_local *lp = netdev_priv(dev);
946 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
952 dma_busctl(struct net_device *dev)
955 struct net_local *lp = netdev_priv(dev);
957 if (lp->isa_config & ANY_ISA_DMA)
958 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
959 if (lp->isa_config & DMA_BURST)
960 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
961 if (lp->dmasize == 64)
962 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
963 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
969 dma_rx(struct net_device *dev)
971 struct net_local *lp = netdev_priv(dev);
974 unsigned char *bp = lp->rx_dma_ptr;
976 status = bp[0] + (bp[1]<<8);
977 length = bp[2] + (bp[3]<<8);
980 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
981 dev->name, (unsigned long)bp, status, length);
983 if ((status & RX_OK) == 0) {
984 count_rx_errors(status, lp);
985 goto skip_this_frame;
988 /* Malloc up new buffer. */
989 skb = dev_alloc_skb(length + 2);
991 if (net_debug) /* I don't think we want to do this to a stressed system */
992 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
993 lp->stats.rx_dropped++;
995 /* AKPM: advance bp to the next frame */
997 bp += (length + 3) & ~3;
998 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1002 skb_reserve(skb, 2); /* longword align L3 header */
1004 if (bp + length > lp->end_dma_buff) {
1005 int semi_cnt = lp->end_dma_buff - bp;
1006 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
1007 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
1010 memcpy(skb_put(skb,length), bp, length);
1012 bp += (length + 3) & ~3;
1013 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1014 lp->rx_dma_ptr = bp;
1016 if (net_debug > 3) {
1017 printk( "%s: received %d byte DMA packet of type %x\n",
1019 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1021 skb->protocol=eth_type_trans(skb,dev);
1023 dev->last_rx = jiffies;
1024 lp->stats.rx_packets++;
1025 lp->stats.rx_bytes += length;
1028 #endif /* ALLOW_DMA */
1030 void __init reset_chip(struct net_device *dev)
1032 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1033 struct net_local *lp = netdev_priv(dev);
1034 int ioaddr = dev->base_addr;
1036 int reset_start_time;
1038 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1043 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1044 if (lp->chip_type != CS8900) {
1045 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1046 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1047 outb(dev->irq, ioaddr + DATA_PORT);
1048 outb(0, ioaddr + DATA_PORT + 1);
1050 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1051 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1052 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1054 #endif /* IXDP2x01 */
1056 /* Wait until the chip is reset */
1057 reset_start_time = jiffies;
1058 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1064 control_dc_dc(struct net_device *dev, int on_not_off)
1066 struct net_local *lp = netdev_priv(dev);
1067 unsigned int selfcontrol;
1068 int timenow = jiffies;
1069 /* control the DC to DC convertor in the SelfControl register.
1070 Note: This is hooked up to a general purpose pin, might not
1071 always be a DC to DC convertor. */
1073 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1074 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1075 selfcontrol |= HCB1;
1077 selfcontrol &= ~HCB1;
1078 writereg(dev, PP_SelfCTL, selfcontrol);
1080 /* Wait for the DC/DC converter to power up - 500ms */
1081 while (jiffies - timenow < HZ)
1085 #define DETECTED_NONE 0
1086 #define DETECTED_RJ45H 1
1087 #define DETECTED_RJ45F 2
1088 #define DETECTED_AUI 3
1089 #define DETECTED_BNC 4
1092 detect_tp(struct net_device *dev)
1094 struct net_local *lp = netdev_priv(dev);
1095 int timenow = jiffies;
1098 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1100 /* If connected to another full duplex capable 10-Base-T card the link pulses
1101 seem to be lost when the auto detect bit in the LineCTL is set.
1102 To overcome this the auto detect bit will be cleared whilst testing the
1103 10-Base-T interface. This would not be necessary for the sparrow chip but
1104 is simpler to do it anyway. */
1105 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1106 control_dc_dc(dev, 0);
1108 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1109 for (timenow = jiffies; jiffies - timenow < 15; )
1111 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1112 return DETECTED_NONE;
1114 if (lp->chip_type == CS8900) {
1115 switch (lp->force & 0xf0) {
1118 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1119 return DETECTED_NONE;
1121 /* CS8900 doesn't support AUTO, change to HALF*/
1123 lp->force &= ~FORCE_AUTO;
1124 lp->force |= FORCE_HALF;
1129 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1132 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1134 switch (lp->force & 0xf0) {
1136 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1139 lp->auto_neg_cnf = 0;
1142 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1146 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1148 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1149 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1150 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1151 if (jiffies - timenow > 4000) {
1152 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1157 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1160 return DETECTED_RJ45F;
1162 return DETECTED_RJ45H;
1165 /* send a test packet - return true if carrier bits are ok */
1167 send_test_pkt(struct net_device *dev)
1169 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1170 0, 46, /* A 46 in network order */
1171 0, 0, /* DSAP=0 & SSAP=0 fields */
1172 0xf3, 0 /* Control (Test Req + P bit set) */ };
1173 long timenow = jiffies;
1175 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1177 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1178 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1180 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1181 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1183 /* Test to see if the chip has allocated memory for the packet */
1184 while (jiffies - timenow < 5)
1185 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1187 if (jiffies - timenow >= 5)
1188 return 0; /* this shouldn't happen */
1190 /* Write the contents of the packet */
1191 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1193 if (net_debug > 1) printk("Sending test packet ");
1194 /* wait a couple of jiffies for packet to be received */
1195 for (timenow = jiffies; jiffies - timenow < 3; )
1197 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1198 if (net_debug > 1) printk("succeeded\n");
1201 if (net_debug > 1) printk("failed\n");
1207 detect_aui(struct net_device *dev)
1209 struct net_local *lp = netdev_priv(dev);
1211 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1212 control_dc_dc(dev, 0);
1214 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1216 if (send_test_pkt(dev))
1217 return DETECTED_AUI;
1219 return DETECTED_NONE;
1223 detect_bnc(struct net_device *dev)
1225 struct net_local *lp = netdev_priv(dev);
1227 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1228 control_dc_dc(dev, 1);
1230 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1232 if (send_test_pkt(dev))
1233 return DETECTED_BNC;
1235 return DETECTED_NONE;
1240 write_irq(struct net_device *dev, int chip_type, int irq)
1244 if (chip_type == CS8900) {
1245 /* Search the mapping table for the corresponding IRQ pin. */
1246 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1247 if (cs8900_irq_map[i] == irq)
1250 if (i == ARRAY_SIZE(cs8900_irq_map))
1252 writereg(dev, PP_CS8900_ISAINT, i);
1254 writereg(dev, PP_CS8920_ISAINT, irq);
1258 /* Open/initialize the board. This is called (in the current kernel)
1259 sometime after booting when the 'ifconfig' program is run.
1261 This routine should set everything up anew at each open, even
1262 registers that "should" only need to be set once at boot, so that
1263 there is non-reboot way to recover if something goes wrong.
1266 /* AKPM: do we need to do any locking here? */
1269 net_open(struct net_device *dev)
1271 struct net_local *lp = netdev_priv(dev);
1276 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1278 /* Allow interrupts to be generated by the chip */
1279 /* Cirrus' release had this: */
1281 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1283 /* And 2.3.47 had this: */
1284 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1286 for (i = 2; i < CS8920_NO_INTS; i++) {
1287 if ((1 << i) & lp->irq_map) {
1288 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1290 write_irq(dev, lp->chip_type, i);
1291 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1297 if (i >= CS8920_NO_INTS) {
1298 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1299 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1307 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX010X)
1308 if (((1 << dev->irq) & lp->irq_map) == 0) {
1309 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1310 dev->name, dev->irq, lp->irq_map);
1315 /* FIXME: Cirrus' release had this: */
1316 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1317 /* And 2.3.47 had this: */
1319 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1321 write_irq(dev, lp->chip_type, dev->irq);
1322 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1325 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1332 if (lp->isa_config & ANY_ISA_DMA) {
1333 unsigned long flags;
1334 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1335 get_order(lp->dmasize * 1024));
1337 if (!lp->dma_buff) {
1338 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1341 if (net_debug > 1) {
1342 printk( "%s: dma %lx %lx\n",
1344 (unsigned long)lp->dma_buff,
1345 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1347 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1348 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1349 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1352 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1353 if (request_dma(dev->dma, dev->name)) {
1354 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1357 write_dma(dev, lp->chip_type, dev->dma);
1358 lp->rx_dma_ptr = lp->dma_buff;
1359 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1360 spin_lock_irqsave(&lp->lock, flags);
1361 disable_dma(dev->dma);
1362 clear_dma_ff(dev->dma);
1363 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1364 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1365 set_dma_count(dev->dma, lp->dmasize*1024);
1366 enable_dma(dev->dma);
1367 spin_unlock_irqrestore(&lp->lock, flags);
1370 #endif /* ALLOW_DMA */
1372 /* set the Ethernet address */
1373 for (i=0; i < ETH_ALEN/2; i++)
1374 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1376 /* while we're testing the interface, leave interrupts disabled */
1377 writereg(dev, PP_BusCTL, MEMORY_ON);
1379 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1380 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1381 lp->linectl = LOW_RX_SQUELCH;
1385 /* check to make sure that they have the "right" hardware available */
1386 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1387 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1388 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1389 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1390 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1392 #ifdef CONFIG_ARCH_PNX010X
1393 result = A_CNF_10B_T;
1396 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1399 release_dma_buff(lp);
1401 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1402 free_irq(dev->irq, dev);
1407 /* set the hardware to the configured choice */
1408 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1409 case A_CNF_MEDIA_10B_T:
1410 result = detect_tp(dev);
1411 if (result==DETECTED_NONE) {
1412 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1413 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1414 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1417 case A_CNF_MEDIA_AUI:
1418 result = detect_aui(dev);
1419 if (result==DETECTED_NONE) {
1420 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1421 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1422 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1425 case A_CNF_MEDIA_10B_2:
1426 result = detect_bnc(dev);
1427 if (result==DETECTED_NONE) {
1428 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1429 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1430 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1433 case A_CNF_MEDIA_AUTO:
1434 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1435 if (lp->adapter_cnf & A_CNF_10B_T)
1436 if ((result = detect_tp(dev)) != DETECTED_NONE)
1438 if (lp->adapter_cnf & A_CNF_AUI)
1439 if ((result = detect_aui(dev)) != DETECTED_NONE)
1441 if (lp->adapter_cnf & A_CNF_10B_2)
1442 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1444 printk(KERN_ERR "%s: no media detected\n", dev->name);
1449 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1451 case DETECTED_RJ45H:
1452 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1454 case DETECTED_RJ45F:
1455 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1458 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1461 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1465 /* Turn on both receive and transmit operations */
1466 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1468 /* Receive only error free packets addressed to this card */
1470 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1472 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1474 if (lp->isa_config & STREAM_TRANSFER)
1475 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1479 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1481 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1482 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1484 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1488 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1490 /* now that we've got our act together, enable everything */
1491 writereg(dev, PP_BusCTL, ENABLE_IRQ
1492 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1497 netif_start_queue(dev);
1499 printk("cs89x0: net_open() succeeded\n");
1505 static void net_timeout(struct net_device *dev)
1507 /* If we get here, some higher level has decided we are broken.
1508 There should really be a "kick me" function call instead. */
1509 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1510 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1511 /* Try to restart the adaptor. */
1512 netif_wake_queue(dev);
1515 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1517 struct net_local *lp = netdev_priv(dev);
1519 if (net_debug > 3) {
1520 printk("%s: sent %d byte packet of type %x\n",
1521 dev->name, skb->len,
1522 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1525 /* keep the upload from being interrupted, since we
1526 ask the chip to start transmitting before the
1527 whole packet has been completely uploaded. */
1529 spin_lock_irq(&lp->lock);
1530 netif_stop_queue(dev);
1532 /* initiate a transmit sequence */
1533 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1534 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1536 /* Test to see if the chip has allocated memory for the packet */
1537 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1539 * Gasp! It hasn't. But that shouldn't happen since
1540 * we're waiting for TxOk, so return 1 and requeue this packet.
1543 spin_unlock_irq(&lp->lock);
1544 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1547 /* Write the contents of the packet */
1548 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1549 spin_unlock_irq(&lp->lock);
1550 lp->stats.tx_bytes += skb->len;
1551 dev->trans_start = jiffies;
1552 dev_kfree_skb (skb);
1555 * We DO NOT call netif_wake_queue() here.
1556 * We also DO NOT call netif_start_queue().
1558 * Either of these would cause another bottom half run through
1559 * net_send_packet() before this packet has fully gone out. That causes
1560 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1561 * a dog. We just return and wait for the Tx completion interrupt handler
1562 * to restart the netdevice layer
1568 /* The typical workload of the driver:
1569 Handle the network interface interrupts. */
1571 static irqreturn_t net_interrupt(int irq, void *dev_id)
1573 struct net_device *dev = dev_id;
1574 struct net_local *lp;
1578 ioaddr = dev->base_addr;
1579 lp = netdev_priv(dev);
1581 /* we MUST read all the events out of the ISQ, otherwise we'll never
1582 get interrupted again. As a consequence, we can't have any limit
1583 on the number of times we loop in the interrupt handler. The
1584 hardware guarantees that eventually we'll run out of events. Of
1585 course, if you're on a slow machine, and packets are arriving
1586 faster than you can read them off, you're screwed. Hasta la
1588 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1589 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1591 switch(status & ISQ_EVENT_MASK) {
1592 case ISQ_RECEIVER_EVENT:
1593 /* Got a packet(s). */
1596 case ISQ_TRANSMITTER_EVENT:
1597 lp->stats.tx_packets++;
1598 netif_wake_queue(dev); /* Inform upper layers. */
1599 if ((status & ( TX_OK |
1603 TX_16_COL)) != TX_OK) {
1604 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1605 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1606 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1607 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1608 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1611 case ISQ_BUFFER_EVENT:
1612 if (status & READY_FOR_TX) {
1613 /* we tried to transmit a packet earlier,
1614 but inexplicably ran out of buffers.
1615 That shouldn't happen since we only ever
1616 load one packet. Shrug. Do the right
1618 netif_wake_queue(dev); /* Inform upper layers. */
1620 if (status & TX_UNDERRUN) {
1621 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1622 lp->send_underrun++;
1623 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1624 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1625 /* transmit cycle is done, although
1626 frame wasn't transmitted - this
1627 avoids having to wait for the upper
1628 layers to timeout on us, in the
1629 event of a tx underrun */
1630 netif_wake_queue(dev); /* Inform upper layers. */
1633 if (lp->use_dma && (status & RX_DMA)) {
1634 int count = readreg(dev, PP_DmaFrameCnt);
1637 printk("%s: receiving %d DMA frames\n", dev->name, count);
1638 if (net_debug > 2 && count >1)
1639 printk("%s: receiving %d DMA frames\n", dev->name, count);
1642 count = readreg(dev, PP_DmaFrameCnt);
1643 if (net_debug > 2 && count > 0)
1644 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1649 case ISQ_RX_MISS_EVENT:
1650 lp->stats.rx_missed_errors += (status >>6);
1652 case ISQ_TX_COL_EVENT:
1653 lp->stats.collisions += (status >>6);
1657 return IRQ_RETVAL(handled);
1661 count_rx_errors(int status, struct net_local *lp)
1663 lp->stats.rx_errors++;
1664 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1665 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1666 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1668 lp->stats.rx_crc_errors++;
1669 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1673 /* We have a good packet(s), get it/them out of the buffers. */
1675 net_rx(struct net_device *dev)
1677 struct net_local *lp = netdev_priv(dev);
1678 struct sk_buff *skb;
1681 int ioaddr = dev->base_addr;
1682 status = readword(ioaddr, RX_FRAME_PORT);
1683 length = readword(ioaddr, RX_FRAME_PORT);
1685 if ((status & RX_OK) == 0) {
1686 count_rx_errors(status, lp);
1690 /* Malloc up new buffer. */
1691 skb = dev_alloc_skb(length + 2);
1693 #if 0 /* Again, this seems a cruel thing to do */
1694 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1696 lp->stats.rx_dropped++;
1699 skb_reserve(skb, 2); /* longword align L3 header */
1701 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1703 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1705 if (net_debug > 3) {
1706 printk( "%s: received %d byte packet of type %x\n",
1708 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1711 skb->protocol=eth_type_trans(skb,dev);
1713 dev->last_rx = jiffies;
1714 lp->stats.rx_packets++;
1715 lp->stats.rx_bytes += length;
1719 static void release_dma_buff(struct net_local *lp)
1722 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1723 lp->dma_buff = NULL;
1728 /* The inverse routine to net_open(). */
1730 net_close(struct net_device *dev)
1733 struct net_local *lp = netdev_priv(dev);
1736 netif_stop_queue(dev);
1738 writereg(dev, PP_RxCFG, 0);
1739 writereg(dev, PP_TxCFG, 0);
1740 writereg(dev, PP_BufCFG, 0);
1741 writereg(dev, PP_BusCTL, 0);
1743 free_irq(dev->irq, dev);
1746 if (lp->use_dma && lp->dma) {
1748 release_dma_buff(lp);
1752 /* Update the statistics here. */
1756 /* Get the current statistics. This may be called with the card open or
1758 static struct net_device_stats *
1759 net_get_stats(struct net_device *dev)
1761 struct net_local *lp = netdev_priv(dev);
1762 unsigned long flags;
1764 spin_lock_irqsave(&lp->lock, flags);
1765 /* Update the statistics from the device registers. */
1766 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1767 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1768 spin_unlock_irqrestore(&lp->lock, flags);
1773 static void set_multicast_list(struct net_device *dev)
1775 struct net_local *lp = netdev_priv(dev);
1776 unsigned long flags;
1778 spin_lock_irqsave(&lp->lock, flags);
1779 if(dev->flags&IFF_PROMISC)
1781 lp->rx_mode = RX_ALL_ACCEPT;
1783 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1785 /* The multicast-accept list is initialized to accept-all, and we
1786 rely on higher-level filtering for now. */
1787 lp->rx_mode = RX_MULTCAST_ACCEPT;
1792 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1794 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1795 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1796 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1797 spin_unlock_irqrestore(&lp->lock, flags);
1801 static int set_mac_address(struct net_device *dev, void *p)
1804 struct sockaddr *addr = p;
1806 if (netif_running(dev))
1809 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1812 DECLARE_MAC_BUF(mac);
1813 printk("%s: Setting MAC address to %s.\n",
1814 dev->name, print_mac(mac, dev->dev_addr));
1816 /* set the Ethernet address */
1817 for (i=0; i < ETH_ALEN/2; i++)
1818 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1825 static struct net_device *dev_cs89x0;
1828 * Support the 'debug' module parm even if we're compiled for non-debug to
1829 * avoid breaking someone's startup scripts
1835 static char media[8];
1836 static int duplex=-1;
1838 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1840 static int dmasize=16; /* or 64 */
1842 module_param(io, int, 0);
1843 module_param(irq, int, 0);
1844 module_param(debug, int, 0);
1845 module_param_string(media, media, sizeof(media), 0);
1846 module_param(duplex, int, 0);
1847 module_param(dma , int, 0);
1848 module_param(dmasize , int, 0);
1849 module_param(use_dma , int, 0);
1850 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1851 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1853 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1855 MODULE_PARM_DESC(debug, "(ignored)");
1857 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1858 /* No other value than -1 for duplex seems to be currently interpreted */
1859 MODULE_PARM_DESC(duplex, "(ignored)");
1861 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1862 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1863 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1865 MODULE_PARM_DESC(dma , "(ignored)");
1866 MODULE_PARM_DESC(dmasize , "(ignored)");
1867 MODULE_PARM_DESC(use_dma , "(ignored)");
1870 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1871 MODULE_LICENSE("GPL");
1875 * media=t - specify media type
1879 * duplex=0 - specify forced half/full/autonegotiate duplex
1880 * debug=# - debug level
1883 * Default Chip Configuration:
1884 * DMA Burst = enabled
1885 * IOCHRDY Enabled = enabled
1887 * CS8900 defaults to half-duplex if not specified on command-line
1888 * CS8920 defaults to autoneg if not specified on command-line
1889 * Use reset defaults for other config parameters
1892 * media type specified is supported (circuitry is present)
1893 * if memory address is > 1MB, then required mem decode hw is present
1894 * if 10B-2, then agent other than driver will enable DC/DC converter
1895 (hw or software util)
1900 int __init init_module(void)
1902 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1903 struct net_local *lp;
1915 dev->base_addr = io;
1916 lp = netdev_priv(dev);
1920 lp->use_dma = use_dma;
1922 lp->dmasize = dmasize;
1926 spin_lock_init(&lp->lock);
1928 /* boy, they'd better get these right */
1929 if (!strcmp(media, "rj45"))
1930 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1931 else if (!strcmp(media, "aui"))
1932 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1933 else if (!strcmp(media, "bnc"))
1934 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1936 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1939 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1942 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1943 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1946 } else if (io <= 0x1ff) {
1952 if (use_dma && dmasize != 16 && dmasize != 64) {
1953 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1958 ret = cs89x0_probe1(dev, io, 1);
1970 cleanup_module(void)
1972 unregister_netdev(dev_cs89x0);
1973 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1974 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1975 free_netdev(dev_cs89x0);
1981 * version-control: t
1982 * kept-new-versions: 5