1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
6 Written 1996 by Russell Nelson, with reference to skeleton.c
7 written 1993-1994 by Donald Becker.
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
12 The author may be reached at nelson@crynwr.com, Crynwr
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
17 Mike Cruse : mcruse@cti-ltd.com
18 : Changes for Linux 2.0 compatibility.
19 : Added dev_id parameter in net_interrupt(),
20 : request_irq() and free_irq(). Just NULL for now.
22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
23 : in net_open() and net_close() so kerneld would know
24 : that the module is in use and wouldn't eject the
27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
28 : as an example. Disabled autoprobing in init_module(),
29 : not a good thing to do to other devices while Linux
30 : is running from all accounts.
32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
35 : email: ethernet@crystal.cirrus.com
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
39 Andrew Morton : andrewm@uow.edu.au
41 : Handle kmalloc() failures
42 : Other resource allocation fixes
44 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
45 : If ALLOW_DMA is true, make DMA runtime selectable
46 : Folded in changes from Cirrus (Melody Lee
47 : <klee@crystal.cirrus.com>)
48 : Don't call netif_wake_queue() in net_send_packet()
49 : Fixed an out-of-mem bug in dma_rx()
50 : Updated Documentation/networking/cs89x0.txt
52 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre1
53 : Use skb_reserve to longword align IP header (two places)
54 : Remove a delay loop from dma_rx()
55 : Replace '100' with HZ
56 : Clean up a couple of skb API abuses
57 : Added 'cs89x0_dma=N' kernel boot option
58 : Correctly initialise lp->lock in non-module compile
60 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre4-1
61 : MOD_INC/DEC race fix (see
62 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
64 Andrew Morton : andrewm@uow.edu.au / Kernel 2.4.0-test7-pre2
65 : Enhanced EEPROM support to cover more devices,
66 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
67 : (Jason Gunthorpe <jgg@ualberta.ca>)
69 Andrew Morton : Kernel 2.4.0-test11-pre4
70 : Use dev->name in request_*() (Andrey Panin)
71 : Fix an error-path memleak in init_module()
72 : Preserve return value from request_irq()
73 : Fix type of `media' module parm (Keith Owens)
74 : Use SET_MODULE_OWNER()
75 : Tidied up strange request_irq() abuse in net_open().
77 Andrew Morton : Kernel 2.4.3-pre1
78 : Request correct number of pages for DMA (Hugh Dickens)
79 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
80 : because unregister_netdev() calls get_stats.
81 : Make `version[]' __initdata
82 : Uninlined the read/write reg/word functions.
84 Oskar Schirmer : oskar@scara.com
85 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
87 Deepak Saxena : dsaxena@plexity.net
88 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
92 /* Always include 'config.h' first in case the user wants to turn on
93 or override something. */
94 #include <linux/config.h>
95 #include <linux/module.h>
98 * Set this to zero to disable DMA code
100 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
101 * module options so we don't break any startup scripts.
103 #ifndef CONFIG_ARCH_IXDP2X01
110 * Set this to zero to remove all the debug statements via
111 * dead code elimination
118 Crynwr packet driver epktisa.
120 Crystal Semiconductor data sheets.
124 #include <linux/errno.h>
125 #include <linux/netdevice.h>
126 #include <linux/etherdevice.h>
127 #include <linux/kernel.h>
128 #include <linux/types.h>
129 #include <linux/fcntl.h>
130 #include <linux/interrupt.h>
131 #include <linux/ioport.h>
132 #include <linux/in.h>
133 #include <linux/skbuff.h>
134 #include <linux/slab.h>
135 #include <linux/spinlock.h>
136 #include <linux/string.h>
137 #include <linux/init.h>
138 #include <linux/bitops.h>
139 #include <linux/delay.h>
141 #include <asm/system.h>
149 static char version[] __initdata =
150 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
152 #define DRV_NAME "cs89x0"
154 /* First, a few definitions that the brave might change.
155 A zero-terminated list of I/O addresses to be probed. Some special flags..
156 Addr & 1 = Read back the address port, look for signature and reset
157 the page window before probing
158 Addr & 3 = Reset the page window and probe
159 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
160 but it is possible that a Cirrus board could be plugged into the ISA
162 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
163 them to system IRQ numbers. This mapping is card specific and is set to
164 the configuration of the Cirrus Eval board for this chip. */
165 #ifdef CONFIG_ARCH_CLPS7500
166 static unsigned int netcard_portlist[] __initdata =
167 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
168 static unsigned int cs8900_irq_map[] = {12,0,0,0};
169 #elif defined(CONFIG_SH_HICOSH4)
170 static unsigned int netcard_portlist[] __initdata =
172 static unsigned int cs8900_irq_map[] = {1,0,0,0};
173 #elif defined(CONFIG_ARCH_IXDP2X01)
175 static unsigned int netcard_portlist[] __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
176 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
177 #elif defined(CONFIG_ARCH_PNX0105)
179 #include <asm/arch/gpio.h>
180 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
181 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
182 static unsigned int netcard_portlist[] __initdata = {CIRRUS_DEFAULT_BASE, 0};
183 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
185 static unsigned int netcard_portlist[] __initdata =
186 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
187 static unsigned int cs8900_irq_map[] = {10,11,12,5};
191 static unsigned int net_debug = DEBUGGING;
193 #define net_debug 0 /* gcc will remove all the debug code for us */
196 /* The number of low I/O ports used by the ethercard. */
197 #define NETCARD_IO_EXTENT 16
199 /* we allow the user to override various values normally set in the EEPROM */
200 #define FORCE_RJ45 0x0001 /* pick one of these three */
201 #define FORCE_AUI 0x0002
202 #define FORCE_BNC 0x0004
204 #define FORCE_AUTO 0x0010 /* pick one of these three */
205 #define FORCE_HALF 0x0020
206 #define FORCE_FULL 0x0030
208 /* Information that need to be kept for each board. */
210 struct net_device_stats stats;
211 int chip_type; /* one of: CS8900, CS8920, CS8920M */
212 char chip_revision; /* revision letter of the chip ('A'...) */
213 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
214 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
215 int adapter_cnf; /* adapter configuration from EEPROM */
216 int isa_config; /* ISA configuration from EEPROM */
217 int irq_map; /* IRQ map from EEPROM */
218 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
219 int curr_rx_cfg; /* a copy of PP_RxCFG */
220 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
221 int send_underrun; /* keep track of how many underruns in a row we get */
222 int force; /* force various values; see FORCE* above. */
225 int use_dma; /* Flag: we're using dma */
226 int dma; /* DMA channel */
227 int dmasize; /* 16 or 64 */
228 unsigned char *dma_buff; /* points to the beginning of the buffer */
229 unsigned char *end_dma_buff; /* points to the end of the buffer */
230 unsigned char *rx_dma_ptr; /* points to the next packet */
234 /* Index to functions, as function prototypes. */
236 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
237 static int net_open(struct net_device *dev);
238 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
239 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
240 static void set_multicast_list(struct net_device *dev);
241 static void net_timeout(struct net_device *dev);
242 static void net_rx(struct net_device *dev);
243 static int net_close(struct net_device *dev);
244 static struct net_device_stats *net_get_stats(struct net_device *dev);
245 static void reset_chip(struct net_device *dev);
246 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
247 static int get_eeprom_cksum(int off, int len, int *buffer);
248 static int set_mac_address(struct net_device *dev, void *addr);
249 static void count_rx_errors(int status, struct net_local *lp);
251 static void get_dma_channel(struct net_device *dev);
252 static void release_dma_buff(struct net_local *lp);
255 /* Example routines you must write ;->. */
256 #define tx_done(dev) 1
259 * Permit 'cs89x0_dma=N' in the kernel boot environment
261 #if !defined(MODULE) && (ALLOW_DMA != 0)
262 static int g_cs89x0_dma;
264 static int __init dma_fn(char *str)
266 g_cs89x0_dma = simple_strtol(str,NULL,0);
270 __setup("cs89x0_dma=", dma_fn);
271 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
274 static int g_cs89x0_media__force;
276 static int __init media_fn(char *str)
278 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
279 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
280 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
284 __setup("cs89x0_media=", media_fn);
287 /* Check for a network adaptor of this type, and return '0' iff one exists.
288 If dev->base_addr == 0, probe all likely locations.
289 If dev->base_addr == 1, always return failure.
290 If dev->base_addr == 2, allocate space for the device and return success
291 (detachable devices only).
295 struct net_device * __init cs89x0_probe(int unit)
297 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
304 return ERR_PTR(-ENODEV);
306 sprintf(dev->name, "eth%d", unit);
307 netdev_boot_setup_check(dev);
312 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
314 if (io > 0x1ff) { /* Check a single specified location. */
315 err = cs89x0_probe1(dev, io, 0);
316 } else if (io != 0) { /* Don't probe at all. */
319 for (port = netcard_portlist; *port; port++) {
320 if (cs89x0_probe1(dev, *port, 0) == 0)
332 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
338 readreg(struct net_device *dev, int portno)
340 outw(portno, dev->base_addr + ADD_PORT);
341 return inw(dev->base_addr + DATA_PORT);
345 writereg(struct net_device *dev, int portno, int value)
347 outw(portno, dev->base_addr + ADD_PORT);
348 outw(value, dev->base_addr + DATA_PORT);
352 readword(struct net_device *dev, int portno)
354 return inw(dev->base_addr + portno);
358 writeword(struct net_device *dev, int portno, int value)
360 outw(value, dev->base_addr + portno);
364 wait_eeprom_ready(struct net_device *dev)
366 int timeout = jiffies;
367 /* check to see if the EEPROM is ready, a timeout is used -
368 just in case EEPROM is ready when SI_BUSY in the
369 PP_SelfST is clear */
370 while(readreg(dev, PP_SelfST) & SI_BUSY)
371 if (jiffies - timeout >= 40)
377 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
381 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
382 for (i = 0; i < len; i++) {
383 if (wait_eeprom_ready(dev) < 0) return -1;
384 /* Now send the EEPROM read command and EEPROM location to read */
385 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
386 if (wait_eeprom_ready(dev) < 0) return -1;
387 buffer[i] = readreg(dev, PP_EEData);
388 if (net_debug > 3) printk("%04x ", buffer[i]);
390 if (net_debug > 3) printk("\n");
395 get_eeprom_cksum(int off, int len, int *buffer)
400 for (i = 0; i < len; i++)
408 /* This is the real probe routine. Linux has a history of friendly device
409 probes on the ISA bus. A good device probes avoids doing writes, and
410 verifies that the correct device exists and functions.
415 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
417 struct net_local *lp = netdev_priv(dev);
418 static unsigned version_printed;
421 unsigned rev_type = 0;
422 int eeprom_buff[CHKSUM_LEN];
425 SET_MODULE_OWNER(dev);
426 /* Initialize the device structure. */
428 memset(lp, 0, sizeof(*lp));
429 spin_lock_init(&lp->lock);
434 lp->dma = g_cs89x0_dma;
435 lp->dmasize = 16; /* Could make this an option... */
438 lp->force = g_cs89x0_media__force;
442 #ifdef CONFIG_ARCH_PNX0105
445 /* Map GPIO registers for the pins connected to the CS8900a. */
446 if (map_cirrus_gpio() < 0)
451 /* Map event-router registers. */
452 if (map_event_router() < 0)
458 unmap_event_router();
460 dev->base_addr = ioaddr;
462 for (i = 0 ; i < 3 ; i++)
466 /* Grab the region so we can find another board if autoIRQ fails. */
467 /* WTF is going on here? */
468 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
469 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
470 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
475 #ifdef CONFIG_SH_HICOSH4
476 /* truely reset the chip */
477 outw(0x0114, ioaddr + ADD_PORT);
478 outw(0x0040, ioaddr + DATA_PORT);
481 /* if they give us an odd I/O address, then do ONE write to
482 the address port, to get it back to address zero, where we
483 expect to find the EISA signature word. An IO with a base of 0x3
484 will skip the test for the ADD_PORT. */
487 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
488 if ((ioaddr & 2) != 2)
489 if ((inw((ioaddr & ~3)+ ADD_PORT) & ADD_MASK) != ADD_SIG) {
490 printk(KERN_ERR "%s: bad signature 0x%x\n",
491 dev->name, inw((ioaddr & ~3)+ ADD_PORT));
496 printk(KERN_DEBUG "PP_addr at %x: 0x%x\n",
497 ioaddr + ADD_PORT, inw(ioaddr + ADD_PORT));
500 outw(PP_ChipID, ioaddr + ADD_PORT);
502 tmp = inw(ioaddr + DATA_PORT);
503 if (tmp != CHIP_EISA_ID_SIG) {
504 printk(KERN_DEBUG "%s: incorrect signature at %x: 0x%x!="
505 CHIP_EISA_ID_SIG_STR "\n",
506 dev->name, ioaddr + DATA_PORT, tmp);
511 /* Fill in the 'dev' fields. */
512 dev->base_addr = ioaddr;
514 /* get the chip type */
515 rev_type = readreg(dev, PRODUCT_ID_ADD);
516 lp->chip_type = rev_type &~ REVISON_BITS;
517 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
519 /* Check the chip type and revision in order to set the correct send command
520 CS8920 revision C and CS8900 revision F can use the faster send. */
521 lp->send_cmd = TX_AFTER_381;
522 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
523 lp->send_cmd = TX_NOW;
524 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
525 lp->send_cmd = TX_NOW;
527 if (net_debug && version_printed++ == 0)
530 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
532 lp->chip_type==CS8900?'0':'2',
533 lp->chip_type==CS8920M?"M":"",
539 /* Here we read the current configuration of the chip. If there
540 is no Extended EEPROM then the idea is to not disturb the chip
541 configuration, it should have been correctly setup by automatic
542 EEPROM read on reset. So, if the chip says it read the EEPROM
543 the driver will always do *something* instead of complain that
546 #ifdef CONFIG_SH_HICOSH4
548 /* For the HiCO.SH4 board, things are different: we don't
549 have EEPROM, but there is some data in flash, so we go
550 get it there directly (MAC). */
553 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
555 confd = (__u16*) 0xa0013fc0;
557 confd = (__u16*) 0xa001ffc0;
559 cnt = (*confd++ & 0x00ff) >> 1;
563 switch (j & 0x0fff) {
565 for (i = 0; i < ETH_ALEN/2; i++) {
566 dev->dev_addr[i*2] = confd[i] & 0xFF;
567 dev->dev_addr[i*2+1] = confd[i] >> 8;
578 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
579 (EEPROM_OK|EEPROM_PRESENT)) {
581 for (i=0; i < ETH_ALEN/2; i++) {
583 Addr = readreg(dev, PP_IA+i*2);
584 dev->dev_addr[i*2] = Addr & 0xFF;
585 dev->dev_addr[i*2+1] = Addr >> 8;
588 /* Load the Adapter Configuration.
589 Note: Barring any more specific information from some
590 other source (ie EEPROM+Schematics), we would not know
591 how to operate a 10Base2 interface on the AUI port.
592 However, since we do read the status of HCB1 and use
593 settings that always result in calls to control_dc_dc(dev,0)
594 a BNC interface should work if the enable pin
595 (dc/dc converter) is on HCB1. It will be called AUI
599 i = readreg(dev, PP_LineCTL);
600 /* Preserve the setting of the HCB1 pin. */
601 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
602 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
603 /* Save the sqelch bit */
604 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
605 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
606 /* Check if the card is in 10Base-t only mode */
607 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
608 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
609 /* Check if the card is in AUI only mode */
610 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
611 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
612 /* Check if the card is in Auto mode. */
613 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
614 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
615 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
618 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
619 dev->name, i, lp->adapter_cnf);
621 /* IRQ. Other chips already probe, see below. */
622 if (lp->chip_type == CS8900)
623 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
625 printk( "[Cirrus EEPROM] ");
630 /* First check to see if an EEPROM is attached. */
631 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
633 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
636 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
637 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
638 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
639 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
640 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
641 /* Check if the chip was able to read its own configuration starting
643 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
644 (EEPROM_OK|EEPROM_PRESENT))
645 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
648 /* This reads an extended EEPROM that is not documented
649 in the CS8900 datasheet. */
651 /* get transmission control word but keep the autonegotiation bits */
652 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
653 /* Store adapter configuration */
654 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
655 /* Store ISA configuration */
656 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
657 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
659 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
660 /* store the initial memory base address */
661 for (i = 0; i < ETH_ALEN/2; i++) {
662 dev->dev_addr[i*2] = eeprom_buff[i];
663 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
666 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
667 dev->name, lp->adapter_cnf);
670 /* allow them to force multiple transceivers. If they force multiple, autosense */
673 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
674 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
675 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
676 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
677 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
678 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
679 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
683 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
684 dev->name, lp->force, lp->adapter_cnf);
686 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
688 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
690 /* FIXME: we don't set the Ethernet address on the command line. Use
691 ifconfig IFACE hw ether AABBCCDDEEFF */
693 printk(KERN_INFO "cs89x0 media %s%s%s",
694 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
695 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
696 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
698 lp->irq_map = 0xffff;
700 /* If this is a CS8900 then no pnp soft */
701 if (lp->chip_type != CS8900 &&
702 /* Check if the ISA IRQ has been set */
703 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
704 (i != 0 && i < CS8920_NO_INTS))) {
708 i = lp->isa_config & INT_NO_MASK;
709 if (lp->chip_type == CS8900) {
710 #if defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX0105)
711 i = cs8900_irq_map[0];
713 /* Translate the IRQ using the IRQ mapping table. */
714 if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
715 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
717 i = cs8900_irq_map[i];
719 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
721 int irq_map_buff[IRQ_MAP_LEN/2];
723 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
725 irq_map_buff) >= 0) {
726 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
727 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
735 printk(" IRQ %d", dev->irq);
739 get_dma_channel(dev);
740 printk(", DMA %d", dev->dma);
745 printk(", programmed I/O");
748 /* print the ethernet address. */
750 for (i = 0; i < ETH_ALEN; i++)
752 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
755 dev->open = net_open;
756 dev->stop = net_close;
757 dev->tx_timeout = net_timeout;
758 dev->watchdog_timeo = HZ;
759 dev->hard_start_xmit = net_send_packet;
760 dev->get_stats = net_get_stats;
761 dev->set_multicast_list = set_multicast_list;
762 dev->set_mac_address = set_mac_address;
766 printk("cs89x0_probe1() successful\n");
768 retval = register_netdev(dev);
773 outw(PP_ChipID, dev->base_addr + ADD_PORT);
775 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
781 /*********************************
782 * This page contains DMA routines
783 **********************************/
787 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
790 get_dma_channel(struct net_device *dev)
792 struct net_local *lp = netdev_priv(dev);
796 lp->isa_config |= ISA_RxDMA;
798 if ((lp->isa_config & ANY_ISA_DMA) == 0)
800 dev->dma = lp->isa_config & DMA_NO_MASK;
801 if (lp->chip_type == CS8900)
803 if (dev->dma < 5 || dev->dma > 7) {
804 lp->isa_config &= ~ANY_ISA_DMA;
812 write_dma(struct net_device *dev, int chip_type, int dma)
814 struct net_local *lp = netdev_priv(dev);
815 if ((lp->isa_config & ANY_ISA_DMA) == 0)
817 if (chip_type == CS8900) {
818 writereg(dev, PP_CS8900_ISADMA, dma-5);
820 writereg(dev, PP_CS8920_ISADMA, dma);
825 set_dma_cfg(struct net_device *dev)
827 struct net_local *lp = netdev_priv(dev);
830 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
832 printk("set_dma_cfg(): no DMA\n");
835 if (lp->isa_config & ISA_RxDMA) {
836 lp->curr_rx_cfg |= RX_DMA_ONLY;
838 printk("set_dma_cfg(): RX_DMA_ONLY\n");
840 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
842 printk("set_dma_cfg(): AUTO_RX_DMA\n");
848 dma_bufcfg(struct net_device *dev)
850 struct net_local *lp = netdev_priv(dev);
852 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
858 dma_busctl(struct net_device *dev)
861 struct net_local *lp = netdev_priv(dev);
863 if (lp->isa_config & ANY_ISA_DMA)
864 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
865 if (lp->isa_config & DMA_BURST)
866 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
867 if (lp->dmasize == 64)
868 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
869 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
875 dma_rx(struct net_device *dev)
877 struct net_local *lp = netdev_priv(dev);
880 unsigned char *bp = lp->rx_dma_ptr;
882 status = bp[0] + (bp[1]<<8);
883 length = bp[2] + (bp[3]<<8);
886 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
887 dev->name, (unsigned long)bp, status, length);
889 if ((status & RX_OK) == 0) {
890 count_rx_errors(status, lp);
891 goto skip_this_frame;
894 /* Malloc up new buffer. */
895 skb = dev_alloc_skb(length + 2);
897 if (net_debug) /* I don't think we want to do this to a stressed system */
898 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
899 lp->stats.rx_dropped++;
901 /* AKPM: advance bp to the next frame */
903 bp += (length + 3) & ~3;
904 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
908 skb_reserve(skb, 2); /* longword align L3 header */
911 if (bp + length > lp->end_dma_buff) {
912 int semi_cnt = lp->end_dma_buff - bp;
913 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
914 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
917 memcpy(skb_put(skb,length), bp, length);
919 bp += (length + 3) & ~3;
920 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
924 printk( "%s: received %d byte DMA packet of type %x\n",
926 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
928 skb->protocol=eth_type_trans(skb,dev);
930 dev->last_rx = jiffies;
931 lp->stats.rx_packets++;
932 lp->stats.rx_bytes += length;
935 #endif /* ALLOW_DMA */
937 void __init reset_chip(struct net_device *dev)
939 #ifndef CONFIG_ARCH_IXDP2X01
940 struct net_local *lp = netdev_priv(dev);
941 int ioaddr = dev->base_addr;
943 int reset_start_time;
945 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
950 #ifndef CONFIG_ARCH_IXDP2X01
951 if (lp->chip_type != CS8900) {
952 /* Hardware problem requires PNP registers to be reconfigured after a reset */
953 outw(PP_CS8920_ISAINT, ioaddr + ADD_PORT);
954 outb(dev->irq, ioaddr + DATA_PORT);
955 outb(0, ioaddr + DATA_PORT + 1);
957 outw(PP_CS8920_ISAMemB, ioaddr + ADD_PORT);
958 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
959 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
961 #endif /* IXDP2x01 */
963 /* Wait until the chip is reset */
964 reset_start_time = jiffies;
965 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
971 control_dc_dc(struct net_device *dev, int on_not_off)
973 struct net_local *lp = netdev_priv(dev);
974 unsigned int selfcontrol;
975 int timenow = jiffies;
976 /* control the DC to DC convertor in the SelfControl register.
977 Note: This is hooked up to a general purpose pin, might not
978 always be a DC to DC convertor. */
980 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
981 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
984 selfcontrol &= ~HCB1;
985 writereg(dev, PP_SelfCTL, selfcontrol);
987 /* Wait for the DC/DC converter to power up - 500ms */
988 while (jiffies - timenow < HZ)
992 #define DETECTED_NONE 0
993 #define DETECTED_RJ45H 1
994 #define DETECTED_RJ45F 2
995 #define DETECTED_AUI 3
996 #define DETECTED_BNC 4
999 detect_tp(struct net_device *dev)
1001 struct net_local *lp = netdev_priv(dev);
1002 int timenow = jiffies;
1005 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1007 /* If connected to another full duplex capable 10-Base-T card the link pulses
1008 seem to be lost when the auto detect bit in the LineCTL is set.
1009 To overcome this the auto detect bit will be cleared whilst testing the
1010 10-Base-T interface. This would not be necessary for the sparrow chip but
1011 is simpler to do it anyway. */
1012 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1013 control_dc_dc(dev, 0);
1015 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1016 for (timenow = jiffies; jiffies - timenow < 15; )
1018 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1019 return DETECTED_NONE;
1021 if (lp->chip_type == CS8900) {
1022 switch (lp->force & 0xf0) {
1025 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1026 return DETECTED_NONE;
1028 /* CS8900 doesn't support AUTO, change to HALF*/
1030 lp->force &= ~FORCE_AUTO;
1031 lp->force |= FORCE_HALF;
1036 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1039 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1041 switch (lp->force & 0xf0) {
1043 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1046 lp->auto_neg_cnf = 0;
1049 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1053 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1055 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1056 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1057 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1058 if (jiffies - timenow > 4000) {
1059 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1064 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1067 return DETECTED_RJ45F;
1069 return DETECTED_RJ45H;
1072 /* send a test packet - return true if carrier bits are ok */
1074 send_test_pkt(struct net_device *dev)
1076 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1077 0, 46, /* A 46 in network order */
1078 0, 0, /* DSAP=0 & SSAP=0 fields */
1079 0xf3, 0 /* Control (Test Req + P bit set) */ };
1080 long timenow = jiffies;
1082 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1084 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1085 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1087 writeword(dev, TX_CMD_PORT, TX_AFTER_ALL);
1088 writeword(dev, TX_LEN_PORT, ETH_ZLEN);
1090 /* Test to see if the chip has allocated memory for the packet */
1091 while (jiffies - timenow < 5)
1092 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1094 if (jiffies - timenow >= 5)
1095 return 0; /* this shouldn't happen */
1097 /* Write the contents of the packet */
1098 outsw(dev->base_addr + TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1100 if (net_debug > 1) printk("Sending test packet ");
1101 /* wait a couple of jiffies for packet to be received */
1102 for (timenow = jiffies; jiffies - timenow < 3; )
1104 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1105 if (net_debug > 1) printk("succeeded\n");
1108 if (net_debug > 1) printk("failed\n");
1114 detect_aui(struct net_device *dev)
1116 struct net_local *lp = netdev_priv(dev);
1118 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1119 control_dc_dc(dev, 0);
1121 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1123 if (send_test_pkt(dev))
1124 return DETECTED_AUI;
1126 return DETECTED_NONE;
1130 detect_bnc(struct net_device *dev)
1132 struct net_local *lp = netdev_priv(dev);
1134 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1135 control_dc_dc(dev, 1);
1137 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1139 if (send_test_pkt(dev))
1140 return DETECTED_BNC;
1142 return DETECTED_NONE;
1147 write_irq(struct net_device *dev, int chip_type, int irq)
1151 if (chip_type == CS8900) {
1152 /* Search the mapping table for the corresponding IRQ pin. */
1153 for (i = 0; i != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++)
1154 if (cs8900_irq_map[i] == irq)
1157 if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
1159 writereg(dev, PP_CS8900_ISAINT, i);
1161 writereg(dev, PP_CS8920_ISAINT, irq);
1165 /* Open/initialize the board. This is called (in the current kernel)
1166 sometime after booting when the 'ifconfig' program is run.
1168 This routine should set everything up anew at each open, even
1169 registers that "should" only need to be set once at boot, so that
1170 there is non-reboot way to recover if something goes wrong.
1173 /* AKPM: do we need to do any locking here? */
1176 net_open(struct net_device *dev)
1178 struct net_local *lp = netdev_priv(dev);
1183 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX0105) /* uses irq#1, so this won't work */
1185 /* Allow interrupts to be generated by the chip */
1186 /* Cirrus' release had this: */
1188 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1190 /* And 2.3.47 had this: */
1191 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1193 for (i = 2; i < CS8920_NO_INTS; i++) {
1194 if ((1 << i) & lp->irq_map) {
1195 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1197 write_irq(dev, lp->chip_type, i);
1198 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1204 if (i >= CS8920_NO_INTS) {
1205 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1206 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1214 #if !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX0105)
1215 if (((1 << dev->irq) & lp->irq_map) == 0) {
1216 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1217 dev->name, dev->irq, lp->irq_map);
1222 /* FIXME: Cirrus' release had this: */
1223 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1224 /* And 2.3.47 had this: */
1226 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1228 write_irq(dev, lp->chip_type, dev->irq);
1229 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1232 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1239 if (lp->isa_config & ANY_ISA_DMA) {
1240 unsigned long flags;
1241 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1242 get_order(lp->dmasize * 1024));
1244 if (!lp->dma_buff) {
1245 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1248 if (net_debug > 1) {
1249 printk( "%s: dma %lx %lx\n",
1251 (unsigned long)lp->dma_buff,
1252 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1254 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1255 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1256 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1259 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1260 if (request_dma(dev->dma, dev->name)) {
1261 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1264 write_dma(dev, lp->chip_type, dev->dma);
1265 lp->rx_dma_ptr = lp->dma_buff;
1266 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1267 spin_lock_irqsave(&lp->lock, flags);
1268 disable_dma(dev->dma);
1269 clear_dma_ff(dev->dma);
1270 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1271 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1272 set_dma_count(dev->dma, lp->dmasize*1024);
1273 enable_dma(dev->dma);
1274 spin_unlock_irqrestore(&lp->lock, flags);
1277 #endif /* ALLOW_DMA */
1279 /* set the Ethernet address */
1280 for (i=0; i < ETH_ALEN/2; i++)
1281 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1283 /* while we're testing the interface, leave interrupts disabled */
1284 writereg(dev, PP_BusCTL, MEMORY_ON);
1286 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1287 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1288 lp->linectl = LOW_RX_SQUELCH;
1292 /* check to make sure that they have the "right" hardware available */
1293 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1294 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1295 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1296 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1297 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1299 #ifdef CONFIG_ARCH_PNX0105
1300 result = A_CNF_10B_T;
1303 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1306 release_dma_buff(lp);
1308 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1309 free_irq(dev->irq, dev);
1314 /* set the hardware to the configured choice */
1315 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1316 case A_CNF_MEDIA_10B_T:
1317 result = detect_tp(dev);
1318 if (result==DETECTED_NONE) {
1319 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1320 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1321 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1324 case A_CNF_MEDIA_AUI:
1325 result = detect_aui(dev);
1326 if (result==DETECTED_NONE) {
1327 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1328 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1329 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1332 case A_CNF_MEDIA_10B_2:
1333 result = detect_bnc(dev);
1334 if (result==DETECTED_NONE) {
1335 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1336 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1337 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1340 case A_CNF_MEDIA_AUTO:
1341 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1342 if (lp->adapter_cnf & A_CNF_10B_T)
1343 if ((result = detect_tp(dev)) != DETECTED_NONE)
1345 if (lp->adapter_cnf & A_CNF_AUI)
1346 if ((result = detect_aui(dev)) != DETECTED_NONE)
1348 if (lp->adapter_cnf & A_CNF_10B_2)
1349 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1351 printk(KERN_ERR "%s: no media detected\n", dev->name);
1356 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1358 case DETECTED_RJ45H:
1359 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1361 case DETECTED_RJ45F:
1362 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1365 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1368 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1372 /* Turn on both receive and transmit operations */
1373 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1375 /* Receive only error free packets addressed to this card */
1377 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1379 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1381 if (lp->isa_config & STREAM_TRANSFER)
1382 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1386 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1388 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1389 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1391 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1395 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1397 /* now that we've got our act together, enable everything */
1398 writereg(dev, PP_BusCTL, ENABLE_IRQ
1399 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1404 netif_start_queue(dev);
1406 printk("cs89x0: net_open() succeeded\n");
1412 static void net_timeout(struct net_device *dev)
1414 /* If we get here, some higher level has decided we are broken.
1415 There should really be a "kick me" function call instead. */
1416 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1417 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1418 /* Try to restart the adaptor. */
1419 netif_wake_queue(dev);
1422 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1424 struct net_local *lp = netdev_priv(dev);
1426 if (net_debug > 3) {
1427 printk("%s: sent %d byte packet of type %x\n",
1428 dev->name, skb->len,
1429 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1432 /* keep the upload from being interrupted, since we
1433 ask the chip to start transmitting before the
1434 whole packet has been completely uploaded. */
1436 spin_lock_irq(&lp->lock);
1437 netif_stop_queue(dev);
1439 /* initiate a transmit sequence */
1440 writeword(dev, TX_CMD_PORT, lp->send_cmd);
1441 writeword(dev, TX_LEN_PORT, skb->len);
1443 /* Test to see if the chip has allocated memory for the packet */
1444 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1446 * Gasp! It hasn't. But that shouldn't happen since
1447 * we're waiting for TxOk, so return 1 and requeue this packet.
1450 spin_unlock_irq(&lp->lock);
1451 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1454 /* Write the contents of the packet */
1455 outsw(dev->base_addr + TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1456 spin_unlock_irq(&lp->lock);
1457 lp->stats.tx_bytes += skb->len;
1458 dev->trans_start = jiffies;
1459 dev_kfree_skb (skb);
1462 * We DO NOT call netif_wake_queue() here.
1463 * We also DO NOT call netif_start_queue().
1465 * Either of these would cause another bottom half run through
1466 * net_send_packet() before this packet has fully gone out. That causes
1467 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1468 * a dog. We just return and wait for the Tx completion interrupt handler
1469 * to restart the netdevice layer
1475 /* The typical workload of the driver:
1476 Handle the network interface interrupts. */
1478 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1480 struct net_device *dev = dev_id;
1481 struct net_local *lp;
1485 ioaddr = dev->base_addr;
1486 lp = netdev_priv(dev);
1488 /* we MUST read all the events out of the ISQ, otherwise we'll never
1489 get interrupted again. As a consequence, we can't have any limit
1490 on the number of times we loop in the interrupt handler. The
1491 hardware guarantees that eventually we'll run out of events. Of
1492 course, if you're on a slow machine, and packets are arriving
1493 faster than you can read them off, you're screwed. Hasta la
1495 while ((status = readword(dev, ISQ_PORT))) {
1496 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1498 switch(status & ISQ_EVENT_MASK) {
1499 case ISQ_RECEIVER_EVENT:
1500 /* Got a packet(s). */
1503 case ISQ_TRANSMITTER_EVENT:
1504 lp->stats.tx_packets++;
1505 netif_wake_queue(dev); /* Inform upper layers. */
1506 if ((status & ( TX_OK |
1510 TX_16_COL)) != TX_OK) {
1511 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1512 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1513 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1514 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1515 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1518 case ISQ_BUFFER_EVENT:
1519 if (status & READY_FOR_TX) {
1520 /* we tried to transmit a packet earlier,
1521 but inexplicably ran out of buffers.
1522 That shouldn't happen since we only ever
1523 load one packet. Shrug. Do the right
1525 netif_wake_queue(dev); /* Inform upper layers. */
1527 if (status & TX_UNDERRUN) {
1528 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1529 lp->send_underrun++;
1530 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1531 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1532 /* transmit cycle is done, although
1533 frame wasn't transmitted - this
1534 avoids having to wait for the upper
1535 layers to timeout on us, in the
1536 event of a tx underrun */
1537 netif_wake_queue(dev); /* Inform upper layers. */
1540 if (lp->use_dma && (status & RX_DMA)) {
1541 int count = readreg(dev, PP_DmaFrameCnt);
1544 printk("%s: receiving %d DMA frames\n", dev->name, count);
1545 if (net_debug > 2 && count >1)
1546 printk("%s: receiving %d DMA frames\n", dev->name, count);
1549 count = readreg(dev, PP_DmaFrameCnt);
1550 if (net_debug > 2 && count > 0)
1551 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1556 case ISQ_RX_MISS_EVENT:
1557 lp->stats.rx_missed_errors += (status >>6);
1559 case ISQ_TX_COL_EVENT:
1560 lp->stats.collisions += (status >>6);
1564 return IRQ_RETVAL(handled);
1568 count_rx_errors(int status, struct net_local *lp)
1570 lp->stats.rx_errors++;
1571 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1572 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1573 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1575 lp->stats.rx_crc_errors++;
1576 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1580 /* We have a good packet(s), get it/them out of the buffers. */
1582 net_rx(struct net_device *dev)
1584 struct net_local *lp = netdev_priv(dev);
1585 struct sk_buff *skb;
1588 int ioaddr = dev->base_addr;
1589 status = inw(ioaddr + RX_FRAME_PORT);
1590 length = inw(ioaddr + RX_FRAME_PORT);
1592 if ((status & RX_OK) == 0) {
1593 count_rx_errors(status, lp);
1597 /* Malloc up new buffer. */
1598 skb = dev_alloc_skb(length + 2);
1600 #if 0 /* Again, this seems a cruel thing to do */
1601 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1603 lp->stats.rx_dropped++;
1606 skb_reserve(skb, 2); /* longword align L3 header */
1609 insw(ioaddr + RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1611 skb->data[length-1] = inw(ioaddr + RX_FRAME_PORT);
1613 if (net_debug > 3) {
1614 printk( "%s: received %d byte packet of type %x\n",
1616 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1619 skb->protocol=eth_type_trans(skb,dev);
1621 dev->last_rx = jiffies;
1622 lp->stats.rx_packets++;
1623 lp->stats.rx_bytes += length;
1627 static void release_dma_buff(struct net_local *lp)
1630 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1631 lp->dma_buff = NULL;
1636 /* The inverse routine to net_open(). */
1638 net_close(struct net_device *dev)
1641 struct net_local *lp = netdev_priv(dev);
1644 netif_stop_queue(dev);
1646 writereg(dev, PP_RxCFG, 0);
1647 writereg(dev, PP_TxCFG, 0);
1648 writereg(dev, PP_BufCFG, 0);
1649 writereg(dev, PP_BusCTL, 0);
1651 free_irq(dev->irq, dev);
1654 if (lp->use_dma && lp->dma) {
1656 release_dma_buff(lp);
1660 /* Update the statistics here. */
1664 /* Get the current statistics. This may be called with the card open or
1666 static struct net_device_stats *
1667 net_get_stats(struct net_device *dev)
1669 struct net_local *lp = netdev_priv(dev);
1670 unsigned long flags;
1672 spin_lock_irqsave(&lp->lock, flags);
1673 /* Update the statistics from the device registers. */
1674 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1675 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1676 spin_unlock_irqrestore(&lp->lock, flags);
1681 static void set_multicast_list(struct net_device *dev)
1683 struct net_local *lp = netdev_priv(dev);
1684 unsigned long flags;
1686 spin_lock_irqsave(&lp->lock, flags);
1687 if(dev->flags&IFF_PROMISC)
1689 lp->rx_mode = RX_ALL_ACCEPT;
1691 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1693 /* The multicast-accept list is initialized to accept-all, and we
1694 rely on higher-level filtering for now. */
1695 lp->rx_mode = RX_MULTCAST_ACCEPT;
1700 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1702 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1703 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1704 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1705 spin_unlock_irqrestore(&lp->lock, flags);
1709 static int set_mac_address(struct net_device *dev, void *p)
1712 struct sockaddr *addr = p;
1715 if (netif_running(dev))
1718 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1721 printk("%s: Setting MAC address to ", dev->name);
1722 for (i = 0; i < dev->addr_len; i++)
1723 printk(" %2.2x", dev->dev_addr[i]);
1726 /* set the Ethernet address */
1727 for (i=0; i < ETH_ALEN/2; i++)
1728 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1735 static struct net_device *dev_cs89x0;
1738 * Support the 'debug' module parm even if we're compiled for non-debug to
1739 * avoid breaking someone's startup scripts
1745 static char media[8];
1746 static int duplex=-1;
1748 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1750 static int dmasize=16; /* or 64 */
1752 module_param(io, int, 0);
1753 module_param(irq, int, 0);
1754 module_param(debug, int, 0);
1755 module_param_string(media, media, sizeof(media), 0);
1756 module_param(duplex, int, 0);
1757 module_param(dma , int, 0);
1758 module_param(dmasize , int, 0);
1759 module_param(use_dma , int, 0);
1760 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1761 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1763 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1765 MODULE_PARM_DESC(debug, "(ignored)");
1767 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1768 /* No other value than -1 for duplex seems to be currently interpreted */
1769 MODULE_PARM_DESC(duplex, "(ignored)");
1771 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1772 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1773 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1775 MODULE_PARM_DESC(dma , "(ignored)");
1776 MODULE_PARM_DESC(dmasize , "(ignored)");
1777 MODULE_PARM_DESC(use_dma , "(ignored)");
1780 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1781 MODULE_LICENSE("GPL");
1785 * media=t - specify media type
1789 * duplex=0 - specify forced half/full/autonegotiate duplex
1790 * debug=# - debug level
1793 * Default Chip Configuration:
1794 * DMA Burst = enabled
1795 * IOCHRDY Enabled = enabled
1797 * CS8900 defaults to half-duplex if not specified on command-line
1798 * CS8920 defaults to autoneg if not specified on command-line
1799 * Use reset defaults for other config parameters
1802 * media type specified is supported (circuitry is present)
1803 * if memory address is > 1MB, then required mem decode hw is present
1804 * if 10B-2, then agent other than driver will enable DC/DC converter
1805 (hw or software util)
1813 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1814 struct net_local *lp;
1826 dev->base_addr = io;
1827 lp = netdev_priv(dev);
1831 lp->use_dma = use_dma;
1833 lp->dmasize = dmasize;
1837 spin_lock_init(&lp->lock);
1839 /* boy, they'd better get these right */
1840 if (!strcmp(media, "rj45"))
1841 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1842 else if (!strcmp(media, "aui"))
1843 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1844 else if (!strcmp(media, "bnc"))
1845 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1847 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1850 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1853 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1854 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1857 } else if (io <= 0x1ff) {
1863 if (use_dma && dmasize != 16 && dmasize != 64) {
1864 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1869 ret = cs89x0_probe1(dev, io, 1);
1881 cleanup_module(void)
1883 unregister_netdev(dev_cs89x0);
1884 outw(PP_ChipID, dev_cs89x0->base_addr + ADD_PORT);
1885 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1886 free_netdev(dev_cs89x0);
1892 * version-control: t
1893 * kept-new-versions: 5