1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
6 Written 1996 by Russell Nelson, with reference to skeleton.c
7 written 1993-1994 by Donald Becker.
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
12 The author may be reached at nelson@crynwr.com, Crynwr
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
17 Mike Cruse : mcruse@cti-ltd.com
18 : Changes for Linux 2.0 compatibility.
19 : Added dev_id parameter in net_interrupt(),
20 : request_irq() and free_irq(). Just NULL for now.
22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
23 : in net_open() and net_close() so kerneld would know
24 : that the module is in use and wouldn't eject the
27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
28 : as an example. Disabled autoprobing in init_module(),
29 : not a good thing to do to other devices while Linux
30 : is running from all accounts.
32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
35 : email: ethernet@crystal.cirrus.com
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
39 Andrew Morton : andrewm@uow.edu.au
41 : Handle kmalloc() failures
42 : Other resource allocation fixes
44 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
45 : If ALLOW_DMA is true, make DMA runtime selectable
46 : Folded in changes from Cirrus (Melody Lee
47 : <klee@crystal.cirrus.com>)
48 : Don't call netif_wake_queue() in net_send_packet()
49 : Fixed an out-of-mem bug in dma_rx()
50 : Updated Documentation/networking/cs89x0.txt
52 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre1
53 : Use skb_reserve to longword align IP header (two places)
54 : Remove a delay loop from dma_rx()
55 : Replace '100' with HZ
56 : Clean up a couple of skb API abuses
57 : Added 'cs89x0_dma=N' kernel boot option
58 : Correctly initialise lp->lock in non-module compile
60 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre4-1
61 : MOD_INC/DEC race fix (see
62 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
64 Andrew Morton : andrewm@uow.edu.au / Kernel 2.4.0-test7-pre2
65 : Enhanced EEPROM support to cover more devices,
66 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
67 : (Jason Gunthorpe <jgg@ualberta.ca>)
69 Andrew Morton : Kernel 2.4.0-test11-pre4
70 : Use dev->name in request_*() (Andrey Panin)
71 : Fix an error-path memleak in init_module()
72 : Preserve return value from request_irq()
73 : Fix type of `media' module parm (Keith Owens)
74 : Use SET_MODULE_OWNER()
75 : Tidied up strange request_irq() abuse in net_open().
77 Andrew Morton : Kernel 2.4.3-pre1
78 : Request correct number of pages for DMA (Hugh Dickens)
79 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
80 : because unregister_netdev() calls get_stats.
81 : Make `version[]' __initdata
82 : Uninlined the read/write reg/word functions.
84 Oskar Schirmer : oskar@scara.com
85 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
87 Deepak Saxena : dsaxena@plexity.net
88 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
90 Dmitry Pervushin : dpervushin@ru.mvista.com
91 : PNX010X platform support
95 /* Always include 'config.h' first in case the user wants to turn on
96 or override something. */
97 #include <linux/config.h>
98 #include <linux/module.h>
101 * Set this to zero to disable DMA code
103 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
104 * module options so we don't break any startup scripts.
106 #ifndef CONFIG_ISA_DMA_API
113 * Set this to zero to remove all the debug statements via
114 * dead code elimination
121 Crynwr packet driver epktisa.
123 Crystal Semiconductor data sheets.
127 #include <linux/errno.h>
128 #include <linux/netdevice.h>
129 #include <linux/etherdevice.h>
130 #include <linux/kernel.h>
131 #include <linux/types.h>
132 #include <linux/fcntl.h>
133 #include <linux/interrupt.h>
134 #include <linux/ioport.h>
135 #include <linux/in.h>
136 #include <linux/skbuff.h>
137 #include <linux/slab.h>
138 #include <linux/spinlock.h>
139 #include <linux/string.h>
140 #include <linux/init.h>
141 #include <linux/bitops.h>
142 #include <linux/delay.h>
144 #include <asm/system.h>
153 static char version[] __initdata =
154 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
156 #define DRV_NAME "cs89x0"
158 /* First, a few definitions that the brave might change.
159 A zero-terminated list of I/O addresses to be probed. Some special flags..
160 Addr & 1 = Read back the address port, look for signature and reset
161 the page window before probing
162 Addr & 3 = Reset the page window and probe
163 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
164 but it is possible that a Cirrus board could be plugged into the ISA
166 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
167 them to system IRQ numbers. This mapping is card specific and is set to
168 the configuration of the Cirrus Eval board for this chip. */
169 #ifdef CONFIG_ARCH_CLPS7500
170 static unsigned int netcard_portlist[] __initdata =
171 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
172 static unsigned int cs8900_irq_map[] = {12,0,0,0};
173 #elif defined(CONFIG_SH_HICOSH4)
174 static unsigned int netcard_portlist[] __initdata =
176 static unsigned int cs8900_irq_map[] = {1,0,0,0};
177 #elif defined(CONFIG_ARCH_IXDP2X01)
179 static unsigned int netcard_portlist[] __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
180 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
181 #elif defined(CONFIG_ARCH_PNX010X)
183 #include <asm/arch/gpio.h>
184 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
185 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
186 static unsigned int netcard_portlist[] __initdata = {CIRRUS_DEFAULT_BASE, 0};
187 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
189 static unsigned int netcard_portlist[] __initdata =
190 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
191 static unsigned int cs8900_irq_map[] = {10,11,12,5};
195 static unsigned int net_debug = DEBUGGING;
197 #define net_debug 0 /* gcc will remove all the debug code for us */
200 /* The number of low I/O ports used by the ethercard. */
201 #define NETCARD_IO_EXTENT 16
203 /* we allow the user to override various values normally set in the EEPROM */
204 #define FORCE_RJ45 0x0001 /* pick one of these three */
205 #define FORCE_AUI 0x0002
206 #define FORCE_BNC 0x0004
208 #define FORCE_AUTO 0x0010 /* pick one of these three */
209 #define FORCE_HALF 0x0020
210 #define FORCE_FULL 0x0030
212 /* Information that need to be kept for each board. */
214 struct net_device_stats stats;
215 int chip_type; /* one of: CS8900, CS8920, CS8920M */
216 char chip_revision; /* revision letter of the chip ('A'...) */
217 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
218 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
219 int adapter_cnf; /* adapter configuration from EEPROM */
220 int isa_config; /* ISA configuration from EEPROM */
221 int irq_map; /* IRQ map from EEPROM */
222 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
223 int curr_rx_cfg; /* a copy of PP_RxCFG */
224 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
225 int send_underrun; /* keep track of how many underruns in a row we get */
226 int force; /* force various values; see FORCE* above. */
229 int use_dma; /* Flag: we're using dma */
230 int dma; /* DMA channel */
231 int dmasize; /* 16 or 64 */
232 unsigned char *dma_buff; /* points to the beginning of the buffer */
233 unsigned char *end_dma_buff; /* points to the end of the buffer */
234 unsigned char *rx_dma_ptr; /* points to the next packet */
238 /* Index to functions, as function prototypes. */
240 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
241 static int net_open(struct net_device *dev);
242 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
243 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
244 static void set_multicast_list(struct net_device *dev);
245 static void net_timeout(struct net_device *dev);
246 static void net_rx(struct net_device *dev);
247 static int net_close(struct net_device *dev);
248 static struct net_device_stats *net_get_stats(struct net_device *dev);
249 static void reset_chip(struct net_device *dev);
250 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
251 static int get_eeprom_cksum(int off, int len, int *buffer);
252 static int set_mac_address(struct net_device *dev, void *addr);
253 static void count_rx_errors(int status, struct net_local *lp);
254 #ifdef CONFIG_NET_POLL_CONTROLLER
255 static void net_poll_controller(struct net_device *dev);
258 static void get_dma_channel(struct net_device *dev);
259 static void release_dma_buff(struct net_local *lp);
262 /* Example routines you must write ;->. */
263 #define tx_done(dev) 1
266 * Permit 'cs89x0_dma=N' in the kernel boot environment
268 #if !defined(MODULE) && (ALLOW_DMA != 0)
269 static int g_cs89x0_dma;
271 static int __init dma_fn(char *str)
273 g_cs89x0_dma = simple_strtol(str,NULL,0);
277 __setup("cs89x0_dma=", dma_fn);
278 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
281 static int g_cs89x0_media__force;
283 static int __init media_fn(char *str)
285 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
286 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
287 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
291 __setup("cs89x0_media=", media_fn);
294 /* Check for a network adaptor of this type, and return '0' iff one exists.
295 If dev->base_addr == 0, probe all likely locations.
296 If dev->base_addr == 1, always return failure.
297 If dev->base_addr == 2, allocate space for the device and return success
298 (detachable devices only).
302 struct net_device * __init cs89x0_probe(int unit)
304 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
311 return ERR_PTR(-ENODEV);
313 sprintf(dev->name, "eth%d", unit);
314 netdev_boot_setup_check(dev);
319 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
321 if (io > 0x1ff) { /* Check a single specified location. */
322 err = cs89x0_probe1(dev, io, 0);
323 } else if (io != 0) { /* Don't probe at all. */
326 for (port = netcard_portlist; *port; port++) {
327 if (cs89x0_probe1(dev, *port, 0) == 0)
339 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
344 #if defined(CONFIG_ARCH_IXDP2X01)
346 readword(unsigned long base_addr, int portno)
348 return (u16)__raw_readl(base_addr + (portno << 1));
352 writeword(unsigned long base_addr, int portno, int value)
354 __raw_writel((u16)value, base_addr + (portno << 1));
357 #if defined(CONFIG_ARCH_PNX010X)
359 readword(unsigned long base_addr, int portno)
361 return inw(base_addr + (portno << 1));
365 writeword(unsigned long base_addr, int portno, int value)
367 outw(value, base_addr + (portno << 1));
371 readword(unsigned long base_addr, int portno)
373 return inw(base_addr + portno);
377 writeword(unsigned long base_addr, int portno, int value)
379 outw(value, base_addr + portno);
385 readwords(unsigned long base_addr, int portno, void *buf, int length)
387 u8 *buf8 = (u8 *)buf;
392 tmp32 = readword(base_addr, portno);
394 *buf8++ = (u8)(tmp32 >> 8);
399 writewords(unsigned long base_addr, int portno, void *buf, int length)
401 u8 *buf8 = (u8 *)buf;
407 tmp32 |= (*buf8++) << 8;
408 writeword(base_addr, portno, tmp32);
413 readreg(struct net_device *dev, int regno)
415 writeword(dev->base_addr, ADD_PORT, regno);
416 return readword(dev->base_addr, DATA_PORT);
420 writereg(struct net_device *dev, int regno, int value)
422 writeword(dev->base_addr, ADD_PORT, regno);
423 writeword(dev->base_addr, DATA_PORT, value);
427 wait_eeprom_ready(struct net_device *dev)
429 int timeout = jiffies;
430 /* check to see if the EEPROM is ready, a timeout is used -
431 just in case EEPROM is ready when SI_BUSY in the
432 PP_SelfST is clear */
433 while(readreg(dev, PP_SelfST) & SI_BUSY)
434 if (jiffies - timeout >= 40)
440 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
444 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
445 for (i = 0; i < len; i++) {
446 if (wait_eeprom_ready(dev) < 0) return -1;
447 /* Now send the EEPROM read command and EEPROM location to read */
448 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
449 if (wait_eeprom_ready(dev) < 0) return -1;
450 buffer[i] = readreg(dev, PP_EEData);
451 if (net_debug > 3) printk("%04x ", buffer[i]);
453 if (net_debug > 3) printk("\n");
458 get_eeprom_cksum(int off, int len, int *buffer)
463 for (i = 0; i < len; i++)
471 #ifdef CONFIG_NET_POLL_CONTROLLER
473 * Polling receive - used by netconsole and other diagnostic tools
474 * to allow network i/o with interrupts disabled.
476 static void net_poll_controller(struct net_device *dev)
478 disable_irq(dev->irq);
479 net_interrupt(dev->irq, dev, NULL);
480 enable_irq(dev->irq);
484 /* This is the real probe routine. Linux has a history of friendly device
485 probes on the ISA bus. A good device probes avoids doing writes, and
486 verifies that the correct device exists and functions.
491 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
493 struct net_local *lp = netdev_priv(dev);
494 static unsigned version_printed;
497 unsigned rev_type = 0;
498 int eeprom_buff[CHKSUM_LEN];
501 SET_MODULE_OWNER(dev);
502 /* Initialize the device structure. */
504 memset(lp, 0, sizeof(*lp));
505 spin_lock_init(&lp->lock);
510 lp->dma = g_cs89x0_dma;
511 lp->dmasize = 16; /* Could make this an option... */
514 lp->force = g_cs89x0_media__force;
518 #ifdef CONFIG_ARCH_PNX010X
521 /* Map GPIO registers for the pins connected to the CS8900a. */
522 if (map_cirrus_gpio() < 0)
527 /* Map event-router registers. */
528 if (map_event_router() < 0)
534 unmap_event_router();
536 dev->base_addr = ioaddr;
538 for (i = 0 ; i < 3 ; i++)
542 /* Grab the region so we can find another board if autoIRQ fails. */
543 /* WTF is going on here? */
544 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
545 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
546 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
551 #ifdef CONFIG_SH_HICOSH4
552 /* truely reset the chip */
553 writeword(ioaddr, ADD_PORT, 0x0114);
554 writeword(ioaddr, DATA_PORT, 0x0040);
557 /* if they give us an odd I/O address, then do ONE write to
558 the address port, to get it back to address zero, where we
559 expect to find the EISA signature word. An IO with a base of 0x3
560 will skip the test for the ADD_PORT. */
563 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
564 if ((ioaddr & 2) != 2)
565 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
566 printk(KERN_ERR "%s: bad signature 0x%x\n",
567 dev->name, readword(ioaddr & ~3, ADD_PORT));
572 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
573 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
576 writeword(ioaddr, ADD_PORT, PP_ChipID);
578 tmp = readword(ioaddr, DATA_PORT);
579 if (tmp != CHIP_EISA_ID_SIG) {
580 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
581 CHIP_EISA_ID_SIG_STR "\n",
582 dev->name, ioaddr, DATA_PORT, tmp);
587 /* Fill in the 'dev' fields. */
588 dev->base_addr = ioaddr;
590 /* get the chip type */
591 rev_type = readreg(dev, PRODUCT_ID_ADD);
592 lp->chip_type = rev_type &~ REVISON_BITS;
593 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
595 /* Check the chip type and revision in order to set the correct send command
596 CS8920 revision C and CS8900 revision F can use the faster send. */
597 lp->send_cmd = TX_AFTER_381;
598 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
599 lp->send_cmd = TX_NOW;
600 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
601 lp->send_cmd = TX_NOW;
603 if (net_debug && version_printed++ == 0)
606 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
608 lp->chip_type==CS8900?'0':'2',
609 lp->chip_type==CS8920M?"M":"",
615 /* Here we read the current configuration of the chip. If there
616 is no Extended EEPROM then the idea is to not disturb the chip
617 configuration, it should have been correctly setup by automatic
618 EEPROM read on reset. So, if the chip says it read the EEPROM
619 the driver will always do *something* instead of complain that
622 #ifdef CONFIG_SH_HICOSH4
624 /* For the HiCO.SH4 board, things are different: we don't
625 have EEPROM, but there is some data in flash, so we go
626 get it there directly (MAC). */
629 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
631 confd = (__u16*) 0xa0013fc0;
633 confd = (__u16*) 0xa001ffc0;
635 cnt = (*confd++ & 0x00ff) >> 1;
639 switch (j & 0x0fff) {
641 for (i = 0; i < ETH_ALEN/2; i++) {
642 dev->dev_addr[i*2] = confd[i] & 0xFF;
643 dev->dev_addr[i*2+1] = confd[i] >> 8;
654 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
655 (EEPROM_OK|EEPROM_PRESENT)) {
657 for (i=0; i < ETH_ALEN/2; i++) {
659 Addr = readreg(dev, PP_IA+i*2);
660 dev->dev_addr[i*2] = Addr & 0xFF;
661 dev->dev_addr[i*2+1] = Addr >> 8;
664 /* Load the Adapter Configuration.
665 Note: Barring any more specific information from some
666 other source (ie EEPROM+Schematics), we would not know
667 how to operate a 10Base2 interface on the AUI port.
668 However, since we do read the status of HCB1 and use
669 settings that always result in calls to control_dc_dc(dev,0)
670 a BNC interface should work if the enable pin
671 (dc/dc converter) is on HCB1. It will be called AUI
675 i = readreg(dev, PP_LineCTL);
676 /* Preserve the setting of the HCB1 pin. */
677 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
678 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
679 /* Save the sqelch bit */
680 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
681 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
682 /* Check if the card is in 10Base-t only mode */
683 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
684 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
685 /* Check if the card is in AUI only mode */
686 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
687 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
688 /* Check if the card is in Auto mode. */
689 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
690 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
691 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
694 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
695 dev->name, i, lp->adapter_cnf);
697 /* IRQ. Other chips already probe, see below. */
698 if (lp->chip_type == CS8900)
699 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
701 printk( "[Cirrus EEPROM] ");
706 /* First check to see if an EEPROM is attached. */
707 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
709 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
712 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
713 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
714 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
715 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
716 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
717 /* Check if the chip was able to read its own configuration starting
719 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
720 (EEPROM_OK|EEPROM_PRESENT))
721 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
724 /* This reads an extended EEPROM that is not documented
725 in the CS8900 datasheet. */
727 /* get transmission control word but keep the autonegotiation bits */
728 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
729 /* Store adapter configuration */
730 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
731 /* Store ISA configuration */
732 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
733 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
735 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
736 /* store the initial memory base address */
737 for (i = 0; i < ETH_ALEN/2; i++) {
738 dev->dev_addr[i*2] = eeprom_buff[i];
739 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
742 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
743 dev->name, lp->adapter_cnf);
746 /* allow them to force multiple transceivers. If they force multiple, autosense */
749 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
750 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
751 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
752 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
753 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
754 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
755 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
759 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
760 dev->name, lp->force, lp->adapter_cnf);
762 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
764 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
766 /* FIXME: we don't set the Ethernet address on the command line. Use
767 ifconfig IFACE hw ether AABBCCDDEEFF */
769 printk(KERN_INFO "cs89x0 media %s%s%s",
770 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
771 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
772 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
774 lp->irq_map = 0xffff;
776 /* If this is a CS8900 then no pnp soft */
777 if (lp->chip_type != CS8900 &&
778 /* Check if the ISA IRQ has been set */
779 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
780 (i != 0 && i < CS8920_NO_INTS))) {
784 i = lp->isa_config & INT_NO_MASK;
785 if (lp->chip_type == CS8900) {
786 #if defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX010X)
787 i = cs8900_irq_map[0];
789 /* Translate the IRQ using the IRQ mapping table. */
790 if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
791 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
793 i = cs8900_irq_map[i];
795 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
797 int irq_map_buff[IRQ_MAP_LEN/2];
799 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
801 irq_map_buff) >= 0) {
802 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
803 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
811 printk(" IRQ %d", dev->irq);
815 get_dma_channel(dev);
816 printk(", DMA %d", dev->dma);
821 printk(", programmed I/O");
824 /* print the ethernet address. */
826 for (i = 0; i < ETH_ALEN; i++)
828 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
831 dev->open = net_open;
832 dev->stop = net_close;
833 dev->tx_timeout = net_timeout;
834 dev->watchdog_timeo = HZ;
835 dev->hard_start_xmit = net_send_packet;
836 dev->get_stats = net_get_stats;
837 dev->set_multicast_list = set_multicast_list;
838 dev->set_mac_address = set_mac_address;
839 #ifdef CONFIG_NET_POLL_CONTROLLER
840 dev->poll_controller = net_poll_controller;
845 printk("cs89x0_probe1() successful\n");
847 retval = register_netdev(dev);
852 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
854 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
860 /*********************************
861 * This page contains DMA routines
862 **********************************/
866 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
869 get_dma_channel(struct net_device *dev)
871 struct net_local *lp = netdev_priv(dev);
875 lp->isa_config |= ISA_RxDMA;
877 if ((lp->isa_config & ANY_ISA_DMA) == 0)
879 dev->dma = lp->isa_config & DMA_NO_MASK;
880 if (lp->chip_type == CS8900)
882 if (dev->dma < 5 || dev->dma > 7) {
883 lp->isa_config &= ~ANY_ISA_DMA;
891 write_dma(struct net_device *dev, int chip_type, int dma)
893 struct net_local *lp = netdev_priv(dev);
894 if ((lp->isa_config & ANY_ISA_DMA) == 0)
896 if (chip_type == CS8900) {
897 writereg(dev, PP_CS8900_ISADMA, dma-5);
899 writereg(dev, PP_CS8920_ISADMA, dma);
904 set_dma_cfg(struct net_device *dev)
906 struct net_local *lp = netdev_priv(dev);
909 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
911 printk("set_dma_cfg(): no DMA\n");
914 if (lp->isa_config & ISA_RxDMA) {
915 lp->curr_rx_cfg |= RX_DMA_ONLY;
917 printk("set_dma_cfg(): RX_DMA_ONLY\n");
919 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
921 printk("set_dma_cfg(): AUTO_RX_DMA\n");
927 dma_bufcfg(struct net_device *dev)
929 struct net_local *lp = netdev_priv(dev);
931 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
937 dma_busctl(struct net_device *dev)
940 struct net_local *lp = netdev_priv(dev);
942 if (lp->isa_config & ANY_ISA_DMA)
943 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
944 if (lp->isa_config & DMA_BURST)
945 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
946 if (lp->dmasize == 64)
947 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
948 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
954 dma_rx(struct net_device *dev)
956 struct net_local *lp = netdev_priv(dev);
959 unsigned char *bp = lp->rx_dma_ptr;
961 status = bp[0] + (bp[1]<<8);
962 length = bp[2] + (bp[3]<<8);
965 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
966 dev->name, (unsigned long)bp, status, length);
968 if ((status & RX_OK) == 0) {
969 count_rx_errors(status, lp);
970 goto skip_this_frame;
973 /* Malloc up new buffer. */
974 skb = dev_alloc_skb(length + 2);
976 if (net_debug) /* I don't think we want to do this to a stressed system */
977 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
978 lp->stats.rx_dropped++;
980 /* AKPM: advance bp to the next frame */
982 bp += (length + 3) & ~3;
983 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
987 skb_reserve(skb, 2); /* longword align L3 header */
990 if (bp + length > lp->end_dma_buff) {
991 int semi_cnt = lp->end_dma_buff - bp;
992 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
993 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
996 memcpy(skb_put(skb,length), bp, length);
998 bp += (length + 3) & ~3;
999 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1000 lp->rx_dma_ptr = bp;
1002 if (net_debug > 3) {
1003 printk( "%s: received %d byte DMA packet of type %x\n",
1005 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1007 skb->protocol=eth_type_trans(skb,dev);
1009 dev->last_rx = jiffies;
1010 lp->stats.rx_packets++;
1011 lp->stats.rx_bytes += length;
1014 #endif /* ALLOW_DMA */
1016 void __init reset_chip(struct net_device *dev)
1018 #ifndef CONFIG_ARCH_IXDP2X01
1019 struct net_local *lp = netdev_priv(dev);
1020 int ioaddr = dev->base_addr;
1022 int reset_start_time;
1024 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1029 #ifndef CONFIG_ARCH_IXDP2X01
1030 if (lp->chip_type != CS8900) {
1031 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1032 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1033 outb(dev->irq, ioaddr + DATA_PORT);
1034 outb(0, ioaddr + DATA_PORT + 1);
1036 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1037 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1038 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1040 #endif /* IXDP2x01 */
1042 /* Wait until the chip is reset */
1043 reset_start_time = jiffies;
1044 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1050 control_dc_dc(struct net_device *dev, int on_not_off)
1052 struct net_local *lp = netdev_priv(dev);
1053 unsigned int selfcontrol;
1054 int timenow = jiffies;
1055 /* control the DC to DC convertor in the SelfControl register.
1056 Note: This is hooked up to a general purpose pin, might not
1057 always be a DC to DC convertor. */
1059 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1060 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1061 selfcontrol |= HCB1;
1063 selfcontrol &= ~HCB1;
1064 writereg(dev, PP_SelfCTL, selfcontrol);
1066 /* Wait for the DC/DC converter to power up - 500ms */
1067 while (jiffies - timenow < HZ)
1071 #define DETECTED_NONE 0
1072 #define DETECTED_RJ45H 1
1073 #define DETECTED_RJ45F 2
1074 #define DETECTED_AUI 3
1075 #define DETECTED_BNC 4
1078 detect_tp(struct net_device *dev)
1080 struct net_local *lp = netdev_priv(dev);
1081 int timenow = jiffies;
1084 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1086 /* If connected to another full duplex capable 10-Base-T card the link pulses
1087 seem to be lost when the auto detect bit in the LineCTL is set.
1088 To overcome this the auto detect bit will be cleared whilst testing the
1089 10-Base-T interface. This would not be necessary for the sparrow chip but
1090 is simpler to do it anyway. */
1091 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1092 control_dc_dc(dev, 0);
1094 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1095 for (timenow = jiffies; jiffies - timenow < 15; )
1097 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1098 return DETECTED_NONE;
1100 if (lp->chip_type == CS8900) {
1101 switch (lp->force & 0xf0) {
1104 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1105 return DETECTED_NONE;
1107 /* CS8900 doesn't support AUTO, change to HALF*/
1109 lp->force &= ~FORCE_AUTO;
1110 lp->force |= FORCE_HALF;
1115 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1118 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1120 switch (lp->force & 0xf0) {
1122 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1125 lp->auto_neg_cnf = 0;
1128 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1132 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1134 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1135 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1136 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1137 if (jiffies - timenow > 4000) {
1138 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1143 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1146 return DETECTED_RJ45F;
1148 return DETECTED_RJ45H;
1151 /* send a test packet - return true if carrier bits are ok */
1153 send_test_pkt(struct net_device *dev)
1155 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1156 0, 46, /* A 46 in network order */
1157 0, 0, /* DSAP=0 & SSAP=0 fields */
1158 0xf3, 0 /* Control (Test Req + P bit set) */ };
1159 long timenow = jiffies;
1161 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1163 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1164 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1166 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1167 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1169 /* Test to see if the chip has allocated memory for the packet */
1170 while (jiffies - timenow < 5)
1171 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1173 if (jiffies - timenow >= 5)
1174 return 0; /* this shouldn't happen */
1176 /* Write the contents of the packet */
1177 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1179 if (net_debug > 1) printk("Sending test packet ");
1180 /* wait a couple of jiffies for packet to be received */
1181 for (timenow = jiffies; jiffies - timenow < 3; )
1183 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1184 if (net_debug > 1) printk("succeeded\n");
1187 if (net_debug > 1) printk("failed\n");
1193 detect_aui(struct net_device *dev)
1195 struct net_local *lp = netdev_priv(dev);
1197 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1198 control_dc_dc(dev, 0);
1200 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1202 if (send_test_pkt(dev))
1203 return DETECTED_AUI;
1205 return DETECTED_NONE;
1209 detect_bnc(struct net_device *dev)
1211 struct net_local *lp = netdev_priv(dev);
1213 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1214 control_dc_dc(dev, 1);
1216 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1218 if (send_test_pkt(dev))
1219 return DETECTED_BNC;
1221 return DETECTED_NONE;
1226 write_irq(struct net_device *dev, int chip_type, int irq)
1230 if (chip_type == CS8900) {
1231 /* Search the mapping table for the corresponding IRQ pin. */
1232 for (i = 0; i != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++)
1233 if (cs8900_irq_map[i] == irq)
1236 if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
1238 writereg(dev, PP_CS8900_ISAINT, i);
1240 writereg(dev, PP_CS8920_ISAINT, irq);
1244 /* Open/initialize the board. This is called (in the current kernel)
1245 sometime after booting when the 'ifconfig' program is run.
1247 This routine should set everything up anew at each open, even
1248 registers that "should" only need to be set once at boot, so that
1249 there is non-reboot way to recover if something goes wrong.
1252 /* AKPM: do we need to do any locking here? */
1255 net_open(struct net_device *dev)
1257 struct net_local *lp = netdev_priv(dev);
1262 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1264 /* Allow interrupts to be generated by the chip */
1265 /* Cirrus' release had this: */
1267 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1269 /* And 2.3.47 had this: */
1270 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1272 for (i = 2; i < CS8920_NO_INTS; i++) {
1273 if ((1 << i) & lp->irq_map) {
1274 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1276 write_irq(dev, lp->chip_type, i);
1277 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1283 if (i >= CS8920_NO_INTS) {
1284 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1285 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1293 #if !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX010X)
1294 if (((1 << dev->irq) & lp->irq_map) == 0) {
1295 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1296 dev->name, dev->irq, lp->irq_map);
1301 /* FIXME: Cirrus' release had this: */
1302 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1303 /* And 2.3.47 had this: */
1305 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1307 write_irq(dev, lp->chip_type, dev->irq);
1308 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1311 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1318 if (lp->isa_config & ANY_ISA_DMA) {
1319 unsigned long flags;
1320 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1321 get_order(lp->dmasize * 1024));
1323 if (!lp->dma_buff) {
1324 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1327 if (net_debug > 1) {
1328 printk( "%s: dma %lx %lx\n",
1330 (unsigned long)lp->dma_buff,
1331 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1333 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1334 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1335 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1338 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1339 if (request_dma(dev->dma, dev->name)) {
1340 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1343 write_dma(dev, lp->chip_type, dev->dma);
1344 lp->rx_dma_ptr = lp->dma_buff;
1345 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1346 spin_lock_irqsave(&lp->lock, flags);
1347 disable_dma(dev->dma);
1348 clear_dma_ff(dev->dma);
1349 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1350 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1351 set_dma_count(dev->dma, lp->dmasize*1024);
1352 enable_dma(dev->dma);
1353 spin_unlock_irqrestore(&lp->lock, flags);
1356 #endif /* ALLOW_DMA */
1358 /* set the Ethernet address */
1359 for (i=0; i < ETH_ALEN/2; i++)
1360 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1362 /* while we're testing the interface, leave interrupts disabled */
1363 writereg(dev, PP_BusCTL, MEMORY_ON);
1365 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1366 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1367 lp->linectl = LOW_RX_SQUELCH;
1371 /* check to make sure that they have the "right" hardware available */
1372 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1373 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1374 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1375 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1376 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1378 #ifdef CONFIG_ARCH_PNX010X
1379 result = A_CNF_10B_T;
1382 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1385 release_dma_buff(lp);
1387 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1388 free_irq(dev->irq, dev);
1393 /* set the hardware to the configured choice */
1394 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1395 case A_CNF_MEDIA_10B_T:
1396 result = detect_tp(dev);
1397 if (result==DETECTED_NONE) {
1398 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1399 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1400 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1403 case A_CNF_MEDIA_AUI:
1404 result = detect_aui(dev);
1405 if (result==DETECTED_NONE) {
1406 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1407 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1408 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1411 case A_CNF_MEDIA_10B_2:
1412 result = detect_bnc(dev);
1413 if (result==DETECTED_NONE) {
1414 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1415 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1416 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1419 case A_CNF_MEDIA_AUTO:
1420 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1421 if (lp->adapter_cnf & A_CNF_10B_T)
1422 if ((result = detect_tp(dev)) != DETECTED_NONE)
1424 if (lp->adapter_cnf & A_CNF_AUI)
1425 if ((result = detect_aui(dev)) != DETECTED_NONE)
1427 if (lp->adapter_cnf & A_CNF_10B_2)
1428 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1430 printk(KERN_ERR "%s: no media detected\n", dev->name);
1435 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1437 case DETECTED_RJ45H:
1438 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1440 case DETECTED_RJ45F:
1441 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1444 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1447 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1451 /* Turn on both receive and transmit operations */
1452 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1454 /* Receive only error free packets addressed to this card */
1456 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1458 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1460 if (lp->isa_config & STREAM_TRANSFER)
1461 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1465 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1467 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1468 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1470 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1474 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1476 /* now that we've got our act together, enable everything */
1477 writereg(dev, PP_BusCTL, ENABLE_IRQ
1478 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1483 netif_start_queue(dev);
1485 printk("cs89x0: net_open() succeeded\n");
1491 static void net_timeout(struct net_device *dev)
1493 /* If we get here, some higher level has decided we are broken.
1494 There should really be a "kick me" function call instead. */
1495 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1496 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1497 /* Try to restart the adaptor. */
1498 netif_wake_queue(dev);
1501 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1503 struct net_local *lp = netdev_priv(dev);
1505 if (net_debug > 3) {
1506 printk("%s: sent %d byte packet of type %x\n",
1507 dev->name, skb->len,
1508 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1511 /* keep the upload from being interrupted, since we
1512 ask the chip to start transmitting before the
1513 whole packet has been completely uploaded. */
1515 spin_lock_irq(&lp->lock);
1516 netif_stop_queue(dev);
1518 /* initiate a transmit sequence */
1519 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1520 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1522 /* Test to see if the chip has allocated memory for the packet */
1523 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1525 * Gasp! It hasn't. But that shouldn't happen since
1526 * we're waiting for TxOk, so return 1 and requeue this packet.
1529 spin_unlock_irq(&lp->lock);
1530 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1533 /* Write the contents of the packet */
1534 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1535 spin_unlock_irq(&lp->lock);
1536 lp->stats.tx_bytes += skb->len;
1537 dev->trans_start = jiffies;
1538 dev_kfree_skb (skb);
1541 * We DO NOT call netif_wake_queue() here.
1542 * We also DO NOT call netif_start_queue().
1544 * Either of these would cause another bottom half run through
1545 * net_send_packet() before this packet has fully gone out. That causes
1546 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1547 * a dog. We just return and wait for the Tx completion interrupt handler
1548 * to restart the netdevice layer
1554 /* The typical workload of the driver:
1555 Handle the network interface interrupts. */
1557 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1559 struct net_device *dev = dev_id;
1560 struct net_local *lp;
1564 ioaddr = dev->base_addr;
1565 lp = netdev_priv(dev);
1567 /* we MUST read all the events out of the ISQ, otherwise we'll never
1568 get interrupted again. As a consequence, we can't have any limit
1569 on the number of times we loop in the interrupt handler. The
1570 hardware guarantees that eventually we'll run out of events. Of
1571 course, if you're on a slow machine, and packets are arriving
1572 faster than you can read them off, you're screwed. Hasta la
1574 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1575 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1577 switch(status & ISQ_EVENT_MASK) {
1578 case ISQ_RECEIVER_EVENT:
1579 /* Got a packet(s). */
1582 case ISQ_TRANSMITTER_EVENT:
1583 lp->stats.tx_packets++;
1584 netif_wake_queue(dev); /* Inform upper layers. */
1585 if ((status & ( TX_OK |
1589 TX_16_COL)) != TX_OK) {
1590 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1591 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1592 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1593 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1594 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1597 case ISQ_BUFFER_EVENT:
1598 if (status & READY_FOR_TX) {
1599 /* we tried to transmit a packet earlier,
1600 but inexplicably ran out of buffers.
1601 That shouldn't happen since we only ever
1602 load one packet. Shrug. Do the right
1604 netif_wake_queue(dev); /* Inform upper layers. */
1606 if (status & TX_UNDERRUN) {
1607 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1608 lp->send_underrun++;
1609 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1610 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1611 /* transmit cycle is done, although
1612 frame wasn't transmitted - this
1613 avoids having to wait for the upper
1614 layers to timeout on us, in the
1615 event of a tx underrun */
1616 netif_wake_queue(dev); /* Inform upper layers. */
1619 if (lp->use_dma && (status & RX_DMA)) {
1620 int count = readreg(dev, PP_DmaFrameCnt);
1623 printk("%s: receiving %d DMA frames\n", dev->name, count);
1624 if (net_debug > 2 && count >1)
1625 printk("%s: receiving %d DMA frames\n", dev->name, count);
1628 count = readreg(dev, PP_DmaFrameCnt);
1629 if (net_debug > 2 && count > 0)
1630 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1635 case ISQ_RX_MISS_EVENT:
1636 lp->stats.rx_missed_errors += (status >>6);
1638 case ISQ_TX_COL_EVENT:
1639 lp->stats.collisions += (status >>6);
1643 return IRQ_RETVAL(handled);
1647 count_rx_errors(int status, struct net_local *lp)
1649 lp->stats.rx_errors++;
1650 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1651 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1652 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1654 lp->stats.rx_crc_errors++;
1655 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1659 /* We have a good packet(s), get it/them out of the buffers. */
1661 net_rx(struct net_device *dev)
1663 struct net_local *lp = netdev_priv(dev);
1664 struct sk_buff *skb;
1667 int ioaddr = dev->base_addr;
1668 status = readword(ioaddr, RX_FRAME_PORT);
1669 length = readword(ioaddr, RX_FRAME_PORT);
1671 if ((status & RX_OK) == 0) {
1672 count_rx_errors(status, lp);
1676 /* Malloc up new buffer. */
1677 skb = dev_alloc_skb(length + 2);
1679 #if 0 /* Again, this seems a cruel thing to do */
1680 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1682 lp->stats.rx_dropped++;
1685 skb_reserve(skb, 2); /* longword align L3 header */
1688 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1690 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1692 if (net_debug > 3) {
1693 printk( "%s: received %d byte packet of type %x\n",
1695 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1698 skb->protocol=eth_type_trans(skb,dev);
1700 dev->last_rx = jiffies;
1701 lp->stats.rx_packets++;
1702 lp->stats.rx_bytes += length;
1706 static void release_dma_buff(struct net_local *lp)
1709 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1710 lp->dma_buff = NULL;
1715 /* The inverse routine to net_open(). */
1717 net_close(struct net_device *dev)
1720 struct net_local *lp = netdev_priv(dev);
1723 netif_stop_queue(dev);
1725 writereg(dev, PP_RxCFG, 0);
1726 writereg(dev, PP_TxCFG, 0);
1727 writereg(dev, PP_BufCFG, 0);
1728 writereg(dev, PP_BusCTL, 0);
1730 free_irq(dev->irq, dev);
1733 if (lp->use_dma && lp->dma) {
1735 release_dma_buff(lp);
1739 /* Update the statistics here. */
1743 /* Get the current statistics. This may be called with the card open or
1745 static struct net_device_stats *
1746 net_get_stats(struct net_device *dev)
1748 struct net_local *lp = netdev_priv(dev);
1749 unsigned long flags;
1751 spin_lock_irqsave(&lp->lock, flags);
1752 /* Update the statistics from the device registers. */
1753 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1754 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1755 spin_unlock_irqrestore(&lp->lock, flags);
1760 static void set_multicast_list(struct net_device *dev)
1762 struct net_local *lp = netdev_priv(dev);
1763 unsigned long flags;
1765 spin_lock_irqsave(&lp->lock, flags);
1766 if(dev->flags&IFF_PROMISC)
1768 lp->rx_mode = RX_ALL_ACCEPT;
1770 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1772 /* The multicast-accept list is initialized to accept-all, and we
1773 rely on higher-level filtering for now. */
1774 lp->rx_mode = RX_MULTCAST_ACCEPT;
1779 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1781 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1782 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1783 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1784 spin_unlock_irqrestore(&lp->lock, flags);
1788 static int set_mac_address(struct net_device *dev, void *p)
1791 struct sockaddr *addr = p;
1794 if (netif_running(dev))
1797 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1800 printk("%s: Setting MAC address to ", dev->name);
1801 for (i = 0; i < dev->addr_len; i++)
1802 printk(" %2.2x", dev->dev_addr[i]);
1805 /* set the Ethernet address */
1806 for (i=0; i < ETH_ALEN/2; i++)
1807 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1814 static struct net_device *dev_cs89x0;
1817 * Support the 'debug' module parm even if we're compiled for non-debug to
1818 * avoid breaking someone's startup scripts
1824 static char media[8];
1825 static int duplex=-1;
1827 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1829 static int dmasize=16; /* or 64 */
1831 module_param(io, int, 0);
1832 module_param(irq, int, 0);
1833 module_param(debug, int, 0);
1834 module_param_string(media, media, sizeof(media), 0);
1835 module_param(duplex, int, 0);
1836 module_param(dma , int, 0);
1837 module_param(dmasize , int, 0);
1838 module_param(use_dma , int, 0);
1839 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1840 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1842 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1844 MODULE_PARM_DESC(debug, "(ignored)");
1846 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1847 /* No other value than -1 for duplex seems to be currently interpreted */
1848 MODULE_PARM_DESC(duplex, "(ignored)");
1850 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1851 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1852 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1854 MODULE_PARM_DESC(dma , "(ignored)");
1855 MODULE_PARM_DESC(dmasize , "(ignored)");
1856 MODULE_PARM_DESC(use_dma , "(ignored)");
1859 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1860 MODULE_LICENSE("GPL");
1864 * media=t - specify media type
1868 * duplex=0 - specify forced half/full/autonegotiate duplex
1869 * debug=# - debug level
1872 * Default Chip Configuration:
1873 * DMA Burst = enabled
1874 * IOCHRDY Enabled = enabled
1876 * CS8900 defaults to half-duplex if not specified on command-line
1877 * CS8920 defaults to autoneg if not specified on command-line
1878 * Use reset defaults for other config parameters
1881 * media type specified is supported (circuitry is present)
1882 * if memory address is > 1MB, then required mem decode hw is present
1883 * if 10B-2, then agent other than driver will enable DC/DC converter
1884 (hw or software util)
1892 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1893 struct net_local *lp;
1905 dev->base_addr = io;
1906 lp = netdev_priv(dev);
1910 lp->use_dma = use_dma;
1912 lp->dmasize = dmasize;
1916 spin_lock_init(&lp->lock);
1918 /* boy, they'd better get these right */
1919 if (!strcmp(media, "rj45"))
1920 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1921 else if (!strcmp(media, "aui"))
1922 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1923 else if (!strcmp(media, "bnc"))
1924 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1926 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1929 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1932 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1933 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1936 } else if (io <= 0x1ff) {
1942 if (use_dma && dmasize != 16 && dmasize != 64) {
1943 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1948 ret = cs89x0_probe1(dev, io, 1);
1960 cleanup_module(void)
1962 unregister_netdev(dev_cs89x0);
1963 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1964 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1965 free_netdev(dev_cs89x0);
1971 * version-control: t
1972 * kept-new-versions: 5