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 : Kernel 2.3.48
40 : Handle kmalloc() failures
41 : Other resource allocation fixes
43 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
44 : If ALLOW_DMA is true, make DMA runtime selectable
45 : Folded in changes from Cirrus (Melody Lee
46 : <klee@crystal.cirrus.com>)
47 : Don't call netif_wake_queue() in net_send_packet()
48 : Fixed an out-of-mem bug in dma_rx()
49 : Updated Documentation/networking/cs89x0.txt
51 Andrew Morton : Kernel 2.3.99-pre1
52 : Use skb_reserve to longword align IP header (two places)
53 : Remove a delay loop from dma_rx()
54 : Replace '100' with HZ
55 : Clean up a couple of skb API abuses
56 : Added 'cs89x0_dma=N' kernel boot option
57 : Correctly initialise lp->lock in non-module compile
59 Andrew Morton : Kernel 2.3.99-pre4-1
60 : MOD_INC/DEC race fix (see
61 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
63 Andrew Morton : Kernel 2.4.0-test7-pre2
64 : Enhanced EEPROM support to cover more devices,
65 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
66 : (Jason Gunthorpe <jgg@ualberta.ca>)
68 Andrew Morton : Kernel 2.4.0-test11-pre4
69 : Use dev->name in request_*() (Andrey Panin)
70 : Fix an error-path memleak in init_module()
71 : Preserve return value from request_irq()
72 : Fix type of `media' module parm (Keith Owens)
73 : Use SET_MODULE_OWNER()
74 : Tidied up strange request_irq() abuse in net_open().
76 Andrew Morton : Kernel 2.4.3-pre1
77 : Request correct number of pages for DMA (Hugh Dickens)
78 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
79 : because unregister_netdev() calls get_stats.
80 : Make `version[]' __initdata
81 : Uninlined the read/write reg/word functions.
83 Oskar Schirmer : oskar@scara.com
84 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
86 Deepak Saxena : dsaxena@plexity.net
87 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
89 Dmitry Pervushin : dpervushin@ru.mvista.com
90 : PNX010X platform support
92 Deepak Saxena : dsaxena@plexity.net
93 : Intel IXDP2351 platform support
95 Dmitry Pervushin : dpervushin@ru.mvista.com
96 : PNX010X platform support
100 /* Always include 'config.h' first in case the user wants to turn on
101 or override something. */
102 #include <linux/module.h>
105 * Set this to zero to disable DMA code
107 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
108 * module options so we don't break any startup scripts.
110 #ifndef CONFIG_ISA_DMA_API
117 * Set this to zero to remove all the debug statements via
118 * dead code elimination
125 Crynwr packet driver epktisa.
127 Crystal Semiconductor data sheets.
131 #include <linux/errno.h>
132 #include <linux/netdevice.h>
133 #include <linux/etherdevice.h>
134 #include <linux/kernel.h>
135 #include <linux/types.h>
136 #include <linux/fcntl.h>
137 #include <linux/interrupt.h>
138 #include <linux/ioport.h>
139 #include <linux/in.h>
140 #include <linux/skbuff.h>
141 #include <linux/spinlock.h>
142 #include <linux/string.h>
143 #include <linux/init.h>
144 #include <linux/bitops.h>
145 #include <linux/delay.h>
146 #include <linux/gfp.h>
148 #include <asm/system.h>
157 static char version[] __initdata =
158 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n";
160 #define DRV_NAME "cs89x0"
162 /* First, a few definitions that the brave might change.
163 A zero-terminated list of I/O addresses to be probed. Some special flags..
164 Addr & 1 = Read back the address port, look for signature and reset
165 the page window before probing
166 Addr & 3 = Reset the page window and probe
167 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
168 but it is possible that a Cirrus board could be plugged into the ISA
170 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
171 them to system IRQ numbers. This mapping is card specific and is set to
172 the configuration of the Cirrus Eval board for this chip. */
173 #if defined(CONFIG_MACH_IXDP2351)
174 static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
175 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
176 #elif defined(CONFIG_ARCH_IXDP2X01)
177 static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
178 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
179 #elif defined(CONFIG_MACH_MX31ADS)
180 #include <mach/board-mx31ads.h>
181 static unsigned int netcard_portlist[] __used __initdata = {
182 PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
184 static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
186 static unsigned int netcard_portlist[] __used __initdata =
187 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
188 static unsigned int cs8900_irq_map[] = {10,11,12,5};
192 static unsigned int net_debug = DEBUGGING;
194 #define net_debug 0 /* gcc will remove all the debug code for us */
197 /* The number of low I/O ports used by the ethercard. */
198 #define NETCARD_IO_EXTENT 16
200 /* we allow the user to override various values normally set in the EEPROM */
201 #define FORCE_RJ45 0x0001 /* pick one of these three */
202 #define FORCE_AUI 0x0002
203 #define FORCE_BNC 0x0004
205 #define FORCE_AUTO 0x0010 /* pick one of these three */
206 #define FORCE_HALF 0x0020
207 #define FORCE_FULL 0x0030
209 /* Information that need to be kept for each board. */
211 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 netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev);
239 static irqreturn_t net_interrupt(int irq, void *dev_id);
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_device *dev);
250 #ifdef CONFIG_NET_POLL_CONTROLLER
251 static void net_poll_controller(struct net_device *dev);
254 static void get_dma_channel(struct net_device *dev);
255 static void release_dma_buff(struct net_local *lp);
258 /* Example routines you must write ;->. */
259 #define tx_done(dev) 1
262 * Permit 'cs89x0_dma=N' in the kernel boot environment
264 #if !defined(MODULE) && (ALLOW_DMA != 0)
265 static int g_cs89x0_dma;
267 static int __init dma_fn(char *str)
269 g_cs89x0_dma = simple_strtol(str,NULL,0);
273 __setup("cs89x0_dma=", dma_fn);
274 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
277 static int g_cs89x0_media__force;
279 static int __init media_fn(char *str)
281 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
282 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
283 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
287 __setup("cs89x0_media=", media_fn);
290 /* Check for a network adaptor of this type, and return '0' iff one exists.
291 If dev->base_addr == 0, probe all likely locations.
292 If dev->base_addr == 1, always return failure.
293 If dev->base_addr == 2, allocate space for the device and return success
294 (detachable devices only).
298 struct net_device * __init cs89x0_probe(int unit)
300 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
307 return ERR_PTR(-ENODEV);
309 sprintf(dev->name, "eth%d", unit);
310 netdev_boot_setup_check(dev);
315 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
317 if (io > 0x1ff) { /* Check a single specified location. */
318 err = cs89x0_probe1(dev, io, 0);
319 } else if (io != 0) { /* Don't probe at all. */
322 for (port = netcard_portlist; *port; port++) {
323 if (cs89x0_probe1(dev, *port, 0) == 0)
335 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
340 #if defined(CONFIG_MACH_IXDP2351)
342 readword(unsigned long base_addr, int portno)
344 return __raw_readw(base_addr + (portno << 1));
348 writeword(unsigned long base_addr, int portno, u16 value)
350 __raw_writew(value, base_addr + (portno << 1));
352 #elif defined(CONFIG_ARCH_IXDP2X01)
354 readword(unsigned long base_addr, int portno)
356 return __raw_readl(base_addr + (portno << 1));
360 writeword(unsigned long base_addr, int portno, u16 value)
362 __raw_writel(value, base_addr + (portno << 1));
366 readword(unsigned long base_addr, int portno)
368 return inw(base_addr + portno);
372 writeword(unsigned long base_addr, int portno, u16 value)
374 outw(value, base_addr + portno);
379 readwords(unsigned long base_addr, int portno, void *buf, int length)
381 u8 *buf8 = (u8 *)buf;
386 tmp16 = readword(base_addr, portno);
388 *buf8++ = (u8)(tmp16 >> 8);
393 writewords(unsigned long base_addr, int portno, void *buf, int length)
395 u8 *buf8 = (u8 *)buf;
401 tmp16 |= (*buf8++) << 8;
402 writeword(base_addr, portno, tmp16);
407 readreg(struct net_device *dev, u16 regno)
409 writeword(dev->base_addr, ADD_PORT, regno);
410 return readword(dev->base_addr, DATA_PORT);
414 writereg(struct net_device *dev, u16 regno, u16 value)
416 writeword(dev->base_addr, ADD_PORT, regno);
417 writeword(dev->base_addr, DATA_PORT, value);
421 wait_eeprom_ready(struct net_device *dev)
423 int timeout = jiffies;
424 /* check to see if the EEPROM is ready, a timeout is used -
425 just in case EEPROM is ready when SI_BUSY in the
426 PP_SelfST is clear */
427 while(readreg(dev, PP_SelfST) & SI_BUSY)
428 if (jiffies - timeout >= 40)
434 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
438 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
439 for (i = 0; i < len; i++) {
440 if (wait_eeprom_ready(dev) < 0) return -1;
441 /* Now send the EEPROM read command and EEPROM location to read */
442 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
443 if (wait_eeprom_ready(dev) < 0) return -1;
444 buffer[i] = readreg(dev, PP_EEData);
445 if (net_debug > 3) printk("%04x ", buffer[i]);
447 if (net_debug > 3) printk("\n");
452 get_eeprom_cksum(int off, int len, int *buffer)
457 for (i = 0; i < len; i++)
465 #ifdef CONFIG_NET_POLL_CONTROLLER
467 * Polling receive - used by netconsole and other diagnostic tools
468 * to allow network i/o with interrupts disabled.
470 static void net_poll_controller(struct net_device *dev)
472 disable_irq(dev->irq);
473 net_interrupt(dev->irq, dev);
474 enable_irq(dev->irq);
478 static const struct net_device_ops net_ops = {
479 .ndo_open = net_open,
480 .ndo_stop = net_close,
481 .ndo_tx_timeout = net_timeout,
482 .ndo_start_xmit = net_send_packet,
483 .ndo_get_stats = net_get_stats,
484 .ndo_set_multicast_list = set_multicast_list,
485 .ndo_set_mac_address = set_mac_address,
486 #ifdef CONFIG_NET_POLL_CONTROLLER
487 .ndo_poll_controller = net_poll_controller,
489 .ndo_change_mtu = eth_change_mtu,
490 .ndo_validate_addr = eth_validate_addr,
493 /* This is the real probe routine. Linux has a history of friendly device
494 probes on the ISA bus. A good device probes avoids doing writes, and
495 verifies that the correct device exists and functions.
500 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
502 struct net_local *lp = netdev_priv(dev);
503 static unsigned version_printed;
506 unsigned rev_type = 0;
507 int eeprom_buff[CHKSUM_LEN];
510 /* Initialize the device structure. */
512 memset(lp, 0, sizeof(*lp));
513 spin_lock_init(&lp->lock);
518 lp->dma = g_cs89x0_dma;
519 lp->dmasize = 16; /* Could make this an option... */
522 lp->force = g_cs89x0_media__force;
526 /* Grab the region so we can find another board if autoIRQ fails. */
527 /* WTF is going on here? */
528 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
529 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
530 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
535 /* if they give us an odd I/O address, then do ONE write to
536 the address port, to get it back to address zero, where we
537 expect to find the EISA signature word. An IO with a base of 0x3
538 will skip the test for the ADD_PORT. */
541 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
542 if ((ioaddr & 2) != 2)
543 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
544 printk(KERN_ERR "%s: bad signature 0x%x\n",
545 dev->name, readword(ioaddr & ~3, ADD_PORT));
552 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
553 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
554 writeword(ioaddr, ADD_PORT, PP_ChipID);
556 tmp = readword(ioaddr, DATA_PORT);
557 if (tmp != CHIP_EISA_ID_SIG) {
558 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
559 CHIP_EISA_ID_SIG_STR "\n",
560 dev->name, ioaddr, DATA_PORT, tmp);
565 /* Fill in the 'dev' fields. */
566 dev->base_addr = ioaddr;
568 /* get the chip type */
569 rev_type = readreg(dev, PRODUCT_ID_ADD);
570 lp->chip_type = rev_type &~ REVISON_BITS;
571 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
573 /* Check the chip type and revision in order to set the correct send command
574 CS8920 revision C and CS8900 revision F can use the faster send. */
575 lp->send_cmd = TX_AFTER_381;
576 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
577 lp->send_cmd = TX_NOW;
578 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
579 lp->send_cmd = TX_NOW;
581 if (net_debug && version_printed++ == 0)
584 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
586 lp->chip_type==CS8900?'0':'2',
587 lp->chip_type==CS8920M?"M":"",
593 /* Here we read the current configuration of the chip. If there
594 is no Extended EEPROM then the idea is to not disturb the chip
595 configuration, it should have been correctly setup by automatic
596 EEPROM read on reset. So, if the chip says it read the EEPROM
597 the driver will always do *something* instead of complain that
601 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
602 (EEPROM_OK|EEPROM_PRESENT)) {
604 for (i=0; i < ETH_ALEN/2; i++) {
606 Addr = readreg(dev, PP_IA+i*2);
607 dev->dev_addr[i*2] = Addr & 0xFF;
608 dev->dev_addr[i*2+1] = Addr >> 8;
611 /* Load the Adapter Configuration.
612 Note: Barring any more specific information from some
613 other source (ie EEPROM+Schematics), we would not know
614 how to operate a 10Base2 interface on the AUI port.
615 However, since we do read the status of HCB1 and use
616 settings that always result in calls to control_dc_dc(dev,0)
617 a BNC interface should work if the enable pin
618 (dc/dc converter) is on HCB1. It will be called AUI
622 i = readreg(dev, PP_LineCTL);
623 /* Preserve the setting of the HCB1 pin. */
624 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
625 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
626 /* Save the sqelch bit */
627 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
628 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
629 /* Check if the card is in 10Base-t only mode */
630 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
631 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
632 /* Check if the card is in AUI only mode */
633 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
634 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
635 /* Check if the card is in Auto mode. */
636 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
637 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
638 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
641 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
642 dev->name, i, lp->adapter_cnf);
644 /* IRQ. Other chips already probe, see below. */
645 if (lp->chip_type == CS8900)
646 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
648 printk( "[Cirrus EEPROM] ");
653 /* First check to see if an EEPROM is attached. */
655 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
656 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
657 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
658 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
659 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
660 /* Check if the chip was able to read its own configuration starting
662 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
663 (EEPROM_OK|EEPROM_PRESENT))
664 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
667 /* This reads an extended EEPROM that is not documented
668 in the CS8900 datasheet. */
670 /* get transmission control word but keep the autonegotiation bits */
671 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
672 /* Store adapter configuration */
673 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
674 /* Store ISA configuration */
675 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
676 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
678 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
679 /* store the initial memory base address */
680 for (i = 0; i < ETH_ALEN/2; i++) {
681 dev->dev_addr[i*2] = eeprom_buff[i];
682 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
685 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
686 dev->name, lp->adapter_cnf);
689 /* allow them to force multiple transceivers. If they force multiple, autosense */
692 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
693 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
694 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
695 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
696 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
697 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
698 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
702 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
703 dev->name, lp->force, lp->adapter_cnf);
705 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
707 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
709 /* FIXME: we don't set the Ethernet address on the command line. Use
710 ifconfig IFACE hw ether AABBCCDDEEFF */
712 printk(KERN_INFO "cs89x0 media %s%s%s",
713 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
714 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
715 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
717 lp->irq_map = 0xffff;
719 /* If this is a CS8900 then no pnp soft */
720 if (lp->chip_type != CS8900 &&
721 /* Check if the ISA IRQ has been set */
722 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
723 (i != 0 && i < CS8920_NO_INTS))) {
727 i = lp->isa_config & INT_NO_MASK;
728 if (lp->chip_type == CS8900) {
729 #ifdef CONFIG_CS89x0_NONISA_IRQ
730 i = cs8900_irq_map[0];
732 /* Translate the IRQ using the IRQ mapping table. */
733 if (i >= ARRAY_SIZE(cs8900_irq_map))
734 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
736 i = cs8900_irq_map[i];
738 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
740 int irq_map_buff[IRQ_MAP_LEN/2];
742 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
744 irq_map_buff) >= 0) {
745 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
746 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
754 printk(" IRQ %d", dev->irq);
758 get_dma_channel(dev);
759 printk(", DMA %d", dev->dma);
764 printk(", programmed I/O");
767 /* print the ethernet address. */
768 printk(", MAC %pM", dev->dev_addr);
770 dev->netdev_ops = &net_ops;
771 dev->watchdog_timeo = HZ;
775 printk("cs89x0_probe1() successful\n");
777 retval = register_netdev(dev);
782 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
784 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
790 /*********************************
791 * This page contains DMA routines
792 **********************************/
796 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
799 get_dma_channel(struct net_device *dev)
801 struct net_local *lp = netdev_priv(dev);
805 lp->isa_config |= ISA_RxDMA;
807 if ((lp->isa_config & ANY_ISA_DMA) == 0)
809 dev->dma = lp->isa_config & DMA_NO_MASK;
810 if (lp->chip_type == CS8900)
812 if (dev->dma < 5 || dev->dma > 7) {
813 lp->isa_config &= ~ANY_ISA_DMA;
820 write_dma(struct net_device *dev, int chip_type, int dma)
822 struct net_local *lp = netdev_priv(dev);
823 if ((lp->isa_config & ANY_ISA_DMA) == 0)
825 if (chip_type == CS8900) {
826 writereg(dev, PP_CS8900_ISADMA, dma-5);
828 writereg(dev, PP_CS8920_ISADMA, dma);
833 set_dma_cfg(struct net_device *dev)
835 struct net_local *lp = netdev_priv(dev);
838 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
840 printk("set_dma_cfg(): no DMA\n");
843 if (lp->isa_config & ISA_RxDMA) {
844 lp->curr_rx_cfg |= RX_DMA_ONLY;
846 printk("set_dma_cfg(): RX_DMA_ONLY\n");
848 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
850 printk("set_dma_cfg(): AUTO_RX_DMA\n");
856 dma_bufcfg(struct net_device *dev)
858 struct net_local *lp = netdev_priv(dev);
860 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
866 dma_busctl(struct net_device *dev)
869 struct net_local *lp = netdev_priv(dev);
871 if (lp->isa_config & ANY_ISA_DMA)
872 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
873 if (lp->isa_config & DMA_BURST)
874 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
875 if (lp->dmasize == 64)
876 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
877 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
883 dma_rx(struct net_device *dev)
885 struct net_local *lp = netdev_priv(dev);
888 unsigned char *bp = lp->rx_dma_ptr;
890 status = bp[0] + (bp[1]<<8);
891 length = bp[2] + (bp[3]<<8);
894 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
895 dev->name, (unsigned long)bp, status, length);
897 if ((status & RX_OK) == 0) {
898 count_rx_errors(status, dev);
899 goto skip_this_frame;
902 /* Malloc up new buffer. */
903 skb = dev_alloc_skb(length + 2);
905 if (net_debug) /* I don't think we want to do this to a stressed system */
906 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
907 dev->stats.rx_dropped++;
909 /* AKPM: advance bp to the next frame */
911 bp += (length + 3) & ~3;
912 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
916 skb_reserve(skb, 2); /* longword align L3 header */
918 if (bp + length > lp->end_dma_buff) {
919 int semi_cnt = lp->end_dma_buff - bp;
920 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
921 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
924 memcpy(skb_put(skb,length), bp, length);
926 bp += (length + 3) & ~3;
927 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
931 printk( "%s: received %d byte DMA packet of type %x\n",
933 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
935 skb->protocol=eth_type_trans(skb,dev);
937 dev->stats.rx_packets++;
938 dev->stats.rx_bytes += length;
941 #endif /* ALLOW_DMA */
943 static void __init reset_chip(struct net_device *dev)
945 #if !defined(CONFIG_MACH_MX31ADS)
946 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
947 struct net_local *lp = netdev_priv(dev);
948 int ioaddr = dev->base_addr;
950 int reset_start_time;
952 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
957 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
958 if (lp->chip_type != CS8900) {
959 /* Hardware problem requires PNP registers to be reconfigured after a reset */
960 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
961 outb(dev->irq, ioaddr + DATA_PORT);
962 outb(0, ioaddr + DATA_PORT + 1);
964 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
965 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
966 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
968 #endif /* IXDP2x01 */
970 /* Wait until the chip is reset */
971 reset_start_time = jiffies;
972 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
974 #endif /* !CONFIG_MACH_MX31ADS */
979 control_dc_dc(struct net_device *dev, int on_not_off)
981 struct net_local *lp = netdev_priv(dev);
982 unsigned int selfcontrol;
983 int timenow = jiffies;
984 /* control the DC to DC convertor in the SelfControl register.
985 Note: This is hooked up to a general purpose pin, might not
986 always be a DC to DC convertor. */
988 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
989 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
992 selfcontrol &= ~HCB1;
993 writereg(dev, PP_SelfCTL, selfcontrol);
995 /* Wait for the DC/DC converter to power up - 500ms */
996 while (jiffies - timenow < HZ)
1000 #define DETECTED_NONE 0
1001 #define DETECTED_RJ45H 1
1002 #define DETECTED_RJ45F 2
1003 #define DETECTED_AUI 3
1004 #define DETECTED_BNC 4
1007 detect_tp(struct net_device *dev)
1009 struct net_local *lp = netdev_priv(dev);
1010 int timenow = jiffies;
1013 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1015 /* If connected to another full duplex capable 10-Base-T card the link pulses
1016 seem to be lost when the auto detect bit in the LineCTL is set.
1017 To overcome this the auto detect bit will be cleared whilst testing the
1018 10-Base-T interface. This would not be necessary for the sparrow chip but
1019 is simpler to do it anyway. */
1020 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1021 control_dc_dc(dev, 0);
1023 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1024 for (timenow = jiffies; jiffies - timenow < 15; )
1026 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1027 return DETECTED_NONE;
1029 if (lp->chip_type == CS8900) {
1030 switch (lp->force & 0xf0) {
1033 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1034 return DETECTED_NONE;
1036 /* CS8900 doesn't support AUTO, change to HALF*/
1038 lp->force &= ~FORCE_AUTO;
1039 lp->force |= FORCE_HALF;
1044 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1047 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1049 switch (lp->force & 0xf0) {
1051 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1054 lp->auto_neg_cnf = 0;
1057 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1061 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1063 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1064 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1065 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1066 if (jiffies - timenow > 4000) {
1067 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1072 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1075 return DETECTED_RJ45F;
1077 return DETECTED_RJ45H;
1080 /* send a test packet - return true if carrier bits are ok */
1082 send_test_pkt(struct net_device *dev)
1084 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1085 0, 46, /* A 46 in network order */
1086 0, 0, /* DSAP=0 & SSAP=0 fields */
1087 0xf3, 0 /* Control (Test Req + P bit set) */ };
1088 long timenow = jiffies;
1090 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1092 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1093 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1095 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1096 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1098 /* Test to see if the chip has allocated memory for the packet */
1099 while (jiffies - timenow < 5)
1100 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1102 if (jiffies - timenow >= 5)
1103 return 0; /* this shouldn't happen */
1105 /* Write the contents of the packet */
1106 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1108 if (net_debug > 1) printk("Sending test packet ");
1109 /* wait a couple of jiffies for packet to be received */
1110 for (timenow = jiffies; jiffies - timenow < 3; )
1112 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1113 if (net_debug > 1) printk("succeeded\n");
1116 if (net_debug > 1) printk("failed\n");
1122 detect_aui(struct net_device *dev)
1124 struct net_local *lp = netdev_priv(dev);
1126 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1127 control_dc_dc(dev, 0);
1129 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1131 if (send_test_pkt(dev))
1132 return DETECTED_AUI;
1134 return DETECTED_NONE;
1138 detect_bnc(struct net_device *dev)
1140 struct net_local *lp = netdev_priv(dev);
1142 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1143 control_dc_dc(dev, 1);
1145 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1147 if (send_test_pkt(dev))
1148 return DETECTED_BNC;
1150 return DETECTED_NONE;
1155 write_irq(struct net_device *dev, int chip_type, int irq)
1159 if (chip_type == CS8900) {
1160 /* Search the mapping table for the corresponding IRQ pin. */
1161 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1162 if (cs8900_irq_map[i] == irq)
1165 if (i == ARRAY_SIZE(cs8900_irq_map))
1167 writereg(dev, PP_CS8900_ISAINT, i);
1169 writereg(dev, PP_CS8920_ISAINT, irq);
1173 /* Open/initialize the board. This is called (in the current kernel)
1174 sometime after booting when the 'ifconfig' program is run.
1176 This routine should set everything up anew at each open, even
1177 registers that "should" only need to be set once at boot, so that
1178 there is non-reboot way to recover if something goes wrong.
1181 /* AKPM: do we need to do any locking here? */
1184 net_open(struct net_device *dev)
1186 struct net_local *lp = netdev_priv(dev);
1192 /* Allow interrupts to be generated by the chip */
1193 /* Cirrus' release had this: */
1195 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1197 /* And 2.3.47 had this: */
1198 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1200 for (i = 2; i < CS8920_NO_INTS; i++) {
1201 if ((1 << i) & lp->irq_map) {
1202 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1204 write_irq(dev, lp->chip_type, i);
1205 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1211 if (i >= CS8920_NO_INTS) {
1212 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1213 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1220 #ifndef CONFIG_CS89x0_NONISA_IRQ
1221 if (((1 << dev->irq) & lp->irq_map) == 0) {
1222 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1223 dev->name, dev->irq, lp->irq_map);
1228 /* FIXME: Cirrus' release had this: */
1229 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1230 /* And 2.3.47 had this: */
1232 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1234 write_irq(dev, lp->chip_type, dev->irq);
1235 ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev);
1237 printk(KERN_ERR "cs89x0: request_irq(%d) failed\n", dev->irq);
1244 if (lp->isa_config & ANY_ISA_DMA) {
1245 unsigned long flags;
1246 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1247 get_order(lp->dmasize * 1024));
1249 if (!lp->dma_buff) {
1250 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1253 if (net_debug > 1) {
1254 printk( "%s: dma %lx %lx\n",
1256 (unsigned long)lp->dma_buff,
1257 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1259 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1260 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1261 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1264 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1265 if (request_dma(dev->dma, dev->name)) {
1266 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1269 write_dma(dev, lp->chip_type, dev->dma);
1270 lp->rx_dma_ptr = lp->dma_buff;
1271 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1272 spin_lock_irqsave(&lp->lock, flags);
1273 disable_dma(dev->dma);
1274 clear_dma_ff(dev->dma);
1275 set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */
1276 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1277 set_dma_count(dev->dma, lp->dmasize*1024);
1278 enable_dma(dev->dma);
1279 spin_unlock_irqrestore(&lp->lock, flags);
1282 #endif /* ALLOW_DMA */
1284 /* set the Ethernet address */
1285 for (i=0; i < ETH_ALEN/2; i++)
1286 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1288 /* while we're testing the interface, leave interrupts disabled */
1289 writereg(dev, PP_BusCTL, MEMORY_ON);
1291 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1292 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1293 lp->linectl = LOW_RX_SQUELCH;
1297 /* check to make sure that they have the "right" hardware available */
1298 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1299 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1300 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1301 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1302 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1305 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1310 release_dma_buff(lp);
1312 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1313 free_irq(dev->irq, dev);
1318 /* set the hardware to the configured choice */
1319 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1320 case A_CNF_MEDIA_10B_T:
1321 result = detect_tp(dev);
1322 if (result==DETECTED_NONE) {
1323 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1324 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1325 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1328 case A_CNF_MEDIA_AUI:
1329 result = detect_aui(dev);
1330 if (result==DETECTED_NONE) {
1331 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1332 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1333 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1336 case A_CNF_MEDIA_10B_2:
1337 result = detect_bnc(dev);
1338 if (result==DETECTED_NONE) {
1339 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1340 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1341 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1344 case A_CNF_MEDIA_AUTO:
1345 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1346 if (lp->adapter_cnf & A_CNF_10B_T)
1347 if ((result = detect_tp(dev)) != DETECTED_NONE)
1349 if (lp->adapter_cnf & A_CNF_AUI)
1350 if ((result = detect_aui(dev)) != DETECTED_NONE)
1352 if (lp->adapter_cnf & A_CNF_10B_2)
1353 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1355 printk(KERN_ERR "%s: no media detected\n", dev->name);
1360 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1362 case DETECTED_RJ45H:
1363 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1365 case DETECTED_RJ45F:
1366 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1369 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1372 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1376 /* Turn on both receive and transmit operations */
1377 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1379 /* Receive only error free packets addressed to this card */
1381 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1383 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1385 if (lp->isa_config & STREAM_TRANSFER)
1386 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1390 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1392 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1393 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1395 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1399 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1401 /* now that we've got our act together, enable everything */
1402 writereg(dev, PP_BusCTL, ENABLE_IRQ
1403 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1408 netif_start_queue(dev);
1410 printk("cs89x0: net_open() succeeded\n");
1416 static void net_timeout(struct net_device *dev)
1418 /* If we get here, some higher level has decided we are broken.
1419 There should really be a "kick me" function call instead. */
1420 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1421 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1422 /* Try to restart the adaptor. */
1423 netif_wake_queue(dev);
1426 static netdev_tx_t net_send_packet(struct sk_buff *skb,struct net_device *dev)
1428 struct net_local *lp = netdev_priv(dev);
1429 unsigned long flags;
1431 if (net_debug > 3) {
1432 printk("%s: sent %d byte packet of type %x\n",
1433 dev->name, skb->len,
1434 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1437 /* keep the upload from being interrupted, since we
1438 ask the chip to start transmitting before the
1439 whole packet has been completely uploaded. */
1441 spin_lock_irqsave(&lp->lock, flags);
1442 netif_stop_queue(dev);
1444 /* initiate a transmit sequence */
1445 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1446 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1448 /* Test to see if the chip has allocated memory for the packet */
1449 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1451 * Gasp! It hasn't. But that shouldn't happen since
1452 * we're waiting for TxOk, so return 1 and requeue this packet.
1455 spin_unlock_irqrestore(&lp->lock, flags);
1456 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1457 return NETDEV_TX_BUSY;
1459 /* Write the contents of the packet */
1460 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1461 spin_unlock_irqrestore(&lp->lock, flags);
1462 dev->stats.tx_bytes += skb->len;
1463 dev_kfree_skb (skb);
1466 * We DO NOT call netif_wake_queue() here.
1467 * We also DO NOT call netif_start_queue().
1469 * Either of these would cause another bottom half run through
1470 * net_send_packet() before this packet has fully gone out. That causes
1471 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1472 * a dog. We just return and wait for the Tx completion interrupt handler
1473 * to restart the netdevice layer
1476 return NETDEV_TX_OK;
1479 /* The typical workload of the driver:
1480 Handle the network interface interrupts. */
1482 static irqreturn_t net_interrupt(int irq, void *dev_id)
1484 struct net_device *dev = dev_id;
1485 struct net_local *lp;
1489 ioaddr = dev->base_addr;
1490 lp = netdev_priv(dev);
1492 /* we MUST read all the events out of the ISQ, otherwise we'll never
1493 get interrupted again. As a consequence, we can't have any limit
1494 on the number of times we loop in the interrupt handler. The
1495 hardware guarantees that eventually we'll run out of events. Of
1496 course, if you're on a slow machine, and packets are arriving
1497 faster than you can read them off, you're screwed. Hasta la
1499 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1500 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1502 switch(status & ISQ_EVENT_MASK) {
1503 case ISQ_RECEIVER_EVENT:
1504 /* Got a packet(s). */
1507 case ISQ_TRANSMITTER_EVENT:
1508 dev->stats.tx_packets++;
1509 netif_wake_queue(dev); /* Inform upper layers. */
1510 if ((status & ( TX_OK |
1514 TX_16_COL)) != TX_OK) {
1515 if ((status & TX_OK) == 0)
1516 dev->stats.tx_errors++;
1517 if (status & TX_LOST_CRS)
1518 dev->stats.tx_carrier_errors++;
1519 if (status & TX_SQE_ERROR)
1520 dev->stats.tx_heartbeat_errors++;
1521 if (status & TX_LATE_COL)
1522 dev->stats.tx_window_errors++;
1523 if (status & TX_16_COL)
1524 dev->stats.tx_aborted_errors++;
1527 case ISQ_BUFFER_EVENT:
1528 if (status & READY_FOR_TX) {
1529 /* we tried to transmit a packet earlier,
1530 but inexplicably ran out of buffers.
1531 That shouldn't happen since we only ever
1532 load one packet. Shrug. Do the right
1534 netif_wake_queue(dev); /* Inform upper layers. */
1536 if (status & TX_UNDERRUN) {
1537 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1538 lp->send_underrun++;
1539 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1540 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1541 /* transmit cycle is done, although
1542 frame wasn't transmitted - this
1543 avoids having to wait for the upper
1544 layers to timeout on us, in the
1545 event of a tx underrun */
1546 netif_wake_queue(dev); /* Inform upper layers. */
1549 if (lp->use_dma && (status & RX_DMA)) {
1550 int count = readreg(dev, PP_DmaFrameCnt);
1553 printk("%s: receiving %d DMA frames\n", dev->name, count);
1554 if (net_debug > 2 && count >1)
1555 printk("%s: receiving %d DMA frames\n", dev->name, count);
1558 count = readreg(dev, PP_DmaFrameCnt);
1559 if (net_debug > 2 && count > 0)
1560 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1565 case ISQ_RX_MISS_EVENT:
1566 dev->stats.rx_missed_errors += (status >> 6);
1568 case ISQ_TX_COL_EVENT:
1569 dev->stats.collisions += (status >> 6);
1573 return IRQ_RETVAL(handled);
1577 count_rx_errors(int status, struct net_device *dev)
1579 dev->stats.rx_errors++;
1580 if (status & RX_RUNT)
1581 dev->stats.rx_length_errors++;
1582 if (status & RX_EXTRA_DATA)
1583 dev->stats.rx_length_errors++;
1584 if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA|RX_RUNT)))
1586 dev->stats.rx_crc_errors++;
1587 if (status & RX_DRIBBLE)
1588 dev->stats.rx_frame_errors++;
1591 /* We have a good packet(s), get it/them out of the buffers. */
1593 net_rx(struct net_device *dev)
1595 struct sk_buff *skb;
1598 int ioaddr = dev->base_addr;
1599 status = readword(ioaddr, RX_FRAME_PORT);
1600 length = readword(ioaddr, RX_FRAME_PORT);
1602 if ((status & RX_OK) == 0) {
1603 count_rx_errors(status, dev);
1607 /* Malloc up new buffer. */
1608 skb = dev_alloc_skb(length + 2);
1610 #if 0 /* Again, this seems a cruel thing to do */
1611 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1613 dev->stats.rx_dropped++;
1616 skb_reserve(skb, 2); /* longword align L3 header */
1618 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1620 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1622 if (net_debug > 3) {
1623 printk( "%s: received %d byte packet of type %x\n",
1625 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1628 skb->protocol=eth_type_trans(skb,dev);
1630 dev->stats.rx_packets++;
1631 dev->stats.rx_bytes += length;
1635 static void release_dma_buff(struct net_local *lp)
1638 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1639 lp->dma_buff = NULL;
1644 /* The inverse routine to net_open(). */
1646 net_close(struct net_device *dev)
1649 struct net_local *lp = netdev_priv(dev);
1652 netif_stop_queue(dev);
1654 writereg(dev, PP_RxCFG, 0);
1655 writereg(dev, PP_TxCFG, 0);
1656 writereg(dev, PP_BufCFG, 0);
1657 writereg(dev, PP_BusCTL, 0);
1659 free_irq(dev->irq, dev);
1662 if (lp->use_dma && lp->dma) {
1664 release_dma_buff(lp);
1668 /* Update the statistics here. */
1672 /* Get the current statistics. This may be called with the card open or
1674 static struct net_device_stats *
1675 net_get_stats(struct net_device *dev)
1677 struct net_local *lp = netdev_priv(dev);
1678 unsigned long flags;
1680 spin_lock_irqsave(&lp->lock, flags);
1681 /* Update the statistics from the device registers. */
1682 dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1683 dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1684 spin_unlock_irqrestore(&lp->lock, flags);
1689 static void set_multicast_list(struct net_device *dev)
1691 struct net_local *lp = netdev_priv(dev);
1692 unsigned long flags;
1694 spin_lock_irqsave(&lp->lock, flags);
1695 if(dev->flags&IFF_PROMISC)
1697 lp->rx_mode = RX_ALL_ACCEPT;
1699 else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev))
1701 /* The multicast-accept list is initialized to accept-all, and we
1702 rely on higher-level filtering for now. */
1703 lp->rx_mode = RX_MULTCAST_ACCEPT;
1708 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1710 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1711 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1712 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1713 spin_unlock_irqrestore(&lp->lock, flags);
1717 static int set_mac_address(struct net_device *dev, void *p)
1720 struct sockaddr *addr = p;
1722 if (netif_running(dev))
1725 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1728 printk("%s: Setting MAC address to %pM.\n",
1729 dev->name, dev->dev_addr);
1731 /* set the Ethernet address */
1732 for (i=0; i < ETH_ALEN/2; i++)
1733 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1740 static struct net_device *dev_cs89x0;
1743 * Support the 'debug' module parm even if we're compiled for non-debug to
1744 * avoid breaking someone's startup scripts
1750 static char media[8];
1751 static int duplex=-1;
1753 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1755 static int dmasize=16; /* or 64 */
1757 module_param(io, int, 0);
1758 module_param(irq, int, 0);
1759 module_param(debug, int, 0);
1760 module_param_string(media, media, sizeof(media), 0);
1761 module_param(duplex, int, 0);
1762 module_param(dma , int, 0);
1763 module_param(dmasize , int, 0);
1764 module_param(use_dma , int, 0);
1765 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1766 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1768 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1770 MODULE_PARM_DESC(debug, "(ignored)");
1772 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1773 /* No other value than -1 for duplex seems to be currently interpreted */
1774 MODULE_PARM_DESC(duplex, "(ignored)");
1776 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1777 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1778 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1780 MODULE_PARM_DESC(dma , "(ignored)");
1781 MODULE_PARM_DESC(dmasize , "(ignored)");
1782 MODULE_PARM_DESC(use_dma , "(ignored)");
1785 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton");
1786 MODULE_LICENSE("GPL");
1790 * media=t - specify media type
1794 * duplex=0 - specify forced half/full/autonegotiate duplex
1795 * debug=# - debug level
1798 * Default Chip Configuration:
1799 * DMA Burst = enabled
1800 * IOCHRDY Enabled = enabled
1802 * CS8900 defaults to half-duplex if not specified on command-line
1803 * CS8920 defaults to autoneg if not specified on command-line
1804 * Use reset defaults for other config parameters
1807 * media type specified is supported (circuitry is present)
1808 * if memory address is > 1MB, then required mem decode hw is present
1809 * if 10B-2, then agent other than driver will enable DC/DC converter
1810 (hw or software util)
1815 int __init init_module(void)
1817 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1818 struct net_local *lp;
1830 dev->base_addr = io;
1831 lp = netdev_priv(dev);
1835 lp->use_dma = use_dma;
1837 lp->dmasize = dmasize;
1841 spin_lock_init(&lp->lock);
1843 /* boy, they'd better get these right */
1844 if (!strcmp(media, "rj45"))
1845 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1846 else if (!strcmp(media, "aui"))
1847 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1848 else if (!strcmp(media, "bnc"))
1849 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1851 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1854 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1857 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1858 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1861 } else if (io <= 0x1ff) {
1867 if (use_dma && dmasize != 16 && dmasize != 64) {
1868 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1873 ret = cs89x0_probe1(dev, io, 1);
1885 cleanup_module(void)
1887 unregister_netdev(dev_cs89x0);
1888 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1889 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1890 free_netdev(dev_cs89x0);
1896 * version-control: t
1897 * kept-new-versions: 5