1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
6 Written 1996 by Russell Nelson, with reference to skeleton.c
7 written 1993-1994 by Donald Becker.
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
12 The author may be reached at nelson@crynwr.com, Crynwr
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
17 Mike Cruse : mcruse@cti-ltd.com
18 : Changes for Linux 2.0 compatibility.
19 : Added dev_id parameter in net_interrupt(),
20 : request_irq() and free_irq(). Just NULL for now.
22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
23 : in net_open() and net_close() so kerneld would know
24 : that the module is in use and wouldn't eject the
27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
28 : as an example. Disabled autoprobing in init_module(),
29 : not a good thing to do to other devices while Linux
30 : is running from all accounts.
32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
35 : email: ethernet@crystal.cirrus.com
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
39 Andrew Morton : andrewm@uow.edu.au
41 : Handle kmalloc() failures
42 : Other resource allocation fixes
44 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
45 : If ALLOW_DMA is true, make DMA runtime selectable
46 : Folded in changes from Cirrus (Melody Lee
47 : <klee@crystal.cirrus.com>)
48 : Don't call netif_wake_queue() in net_send_packet()
49 : Fixed an out-of-mem bug in dma_rx()
50 : Updated Documentation/networking/cs89x0.txt
52 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre1
53 : Use skb_reserve to longword align IP header (two places)
54 : Remove a delay loop from dma_rx()
55 : Replace '100' with HZ
56 : Clean up a couple of skb API abuses
57 : Added 'cs89x0_dma=N' kernel boot option
58 : Correctly initialise lp->lock in non-module compile
60 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre4-1
61 : MOD_INC/DEC race fix (see
62 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
64 Andrew Morton : andrewm@uow.edu.au / Kernel 2.4.0-test7-pre2
65 : Enhanced EEPROM support to cover more devices,
66 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
67 : (Jason Gunthorpe <jgg@ualberta.ca>)
69 Andrew Morton : Kernel 2.4.0-test11-pre4
70 : Use dev->name in request_*() (Andrey Panin)
71 : Fix an error-path memleak in init_module()
72 : Preserve return value from request_irq()
73 : Fix type of `media' module parm (Keith Owens)
74 : Use SET_MODULE_OWNER()
75 : Tidied up strange request_irq() abuse in net_open().
77 Andrew Morton : Kernel 2.4.3-pre1
78 : Request correct number of pages for DMA (Hugh Dickens)
79 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
80 : because unregister_netdev() calls get_stats.
81 : Make `version[]' __initdata
82 : Uninlined the read/write reg/word functions.
84 Oskar Schirmer : oskar@scara.com
85 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
87 Deepak Saxena : dsaxena@plexity.net
88 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
90 Dmitry Pervushin : dpervushin@ru.mvista.com
91 : PNX010X platform support
93 Deepak Saxena : dsaxena@plexity.net
94 : Intel IXDP2351 platform support
96 Dmitry Pervushin : dpervushin@ru.mvista.com
97 : PNX010X platform support
101 /* Always include 'config.h' first in case the user wants to turn on
102 or override something. */
103 #include <linux/config.h>
104 #include <linux/module.h>
107 * Set this to zero to disable DMA code
109 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
110 * module options so we don't break any startup scripts.
112 #ifndef CONFIG_ISA_DMA_API
119 * Set this to zero to remove all the debug statements via
120 * dead code elimination
127 Crynwr packet driver epktisa.
129 Crystal Semiconductor data sheets.
133 #include <linux/errno.h>
134 #include <linux/netdevice.h>
135 #include <linux/etherdevice.h>
136 #include <linux/kernel.h>
137 #include <linux/types.h>
138 #include <linux/fcntl.h>
139 #include <linux/interrupt.h>
140 #include <linux/ioport.h>
141 #include <linux/in.h>
142 #include <linux/skbuff.h>
143 #include <linux/slab.h>
144 #include <linux/spinlock.h>
145 #include <linux/string.h>
146 #include <linux/init.h>
147 #include <linux/bitops.h>
148 #include <linux/delay.h>
150 #include <asm/system.h>
159 static char version[] __initdata =
160 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
162 #define DRV_NAME "cs89x0"
164 /* First, a few definitions that the brave might change.
165 A zero-terminated list of I/O addresses to be probed. Some special flags..
166 Addr & 1 = Read back the address port, look for signature and reset
167 the page window before probing
168 Addr & 3 = Reset the page window and probe
169 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
170 but it is possible that a Cirrus board could be plugged into the ISA
172 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
173 them to system IRQ numbers. This mapping is card specific and is set to
174 the configuration of the Cirrus Eval board for this chip. */
175 #ifdef CONFIG_ARCH_CLPS7500
176 static unsigned int netcard_portlist[] __initdata =
177 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
178 static unsigned int cs8900_irq_map[] = {12,0,0,0};
179 #elif defined(CONFIG_SH_HICOSH4)
180 static unsigned int netcard_portlist[] __initdata =
182 static unsigned int cs8900_irq_map[] = {1,0,0,0};
183 #elif defined(CONFIG_MACH_IXDP2351)
184 static unsigned int netcard_portlist[] __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
185 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
187 #elif defined(CONFIG_ARCH_IXDP2X01)
189 static unsigned int netcard_portlist[] __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
190 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
191 #elif defined(CONFIG_ARCH_PNX010X)
193 #include <asm/arch/gpio.h>
194 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
195 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
196 static unsigned int netcard_portlist[] __initdata = {CIRRUS_DEFAULT_BASE, 0};
197 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
199 static unsigned int netcard_portlist[] __initdata =
200 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
201 static unsigned int cs8900_irq_map[] = {10,11,12,5};
205 static unsigned int net_debug = DEBUGGING;
207 #define net_debug 0 /* gcc will remove all the debug code for us */
210 /* The number of low I/O ports used by the ethercard. */
211 #define NETCARD_IO_EXTENT 16
213 /* we allow the user to override various values normally set in the EEPROM */
214 #define FORCE_RJ45 0x0001 /* pick one of these three */
215 #define FORCE_AUI 0x0002
216 #define FORCE_BNC 0x0004
218 #define FORCE_AUTO 0x0010 /* pick one of these three */
219 #define FORCE_HALF 0x0020
220 #define FORCE_FULL 0x0030
222 /* Information that need to be kept for each board. */
224 struct net_device_stats stats;
225 int chip_type; /* one of: CS8900, CS8920, CS8920M */
226 char chip_revision; /* revision letter of the chip ('A'...) */
227 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
228 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
229 int adapter_cnf; /* adapter configuration from EEPROM */
230 int isa_config; /* ISA configuration from EEPROM */
231 int irq_map; /* IRQ map from EEPROM */
232 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
233 int curr_rx_cfg; /* a copy of PP_RxCFG */
234 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
235 int send_underrun; /* keep track of how many underruns in a row we get */
236 int force; /* force various values; see FORCE* above. */
239 int use_dma; /* Flag: we're using dma */
240 int dma; /* DMA channel */
241 int dmasize; /* 16 or 64 */
242 unsigned char *dma_buff; /* points to the beginning of the buffer */
243 unsigned char *end_dma_buff; /* points to the end of the buffer */
244 unsigned char *rx_dma_ptr; /* points to the next packet */
248 /* Index to functions, as function prototypes. */
250 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
251 static int net_open(struct net_device *dev);
252 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
253 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
254 static void set_multicast_list(struct net_device *dev);
255 static void net_timeout(struct net_device *dev);
256 static void net_rx(struct net_device *dev);
257 static int net_close(struct net_device *dev);
258 static struct net_device_stats *net_get_stats(struct net_device *dev);
259 static void reset_chip(struct net_device *dev);
260 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
261 static int get_eeprom_cksum(int off, int len, int *buffer);
262 static int set_mac_address(struct net_device *dev, void *addr);
263 static void count_rx_errors(int status, struct net_local *lp);
264 #ifdef CONFIG_NET_POLL_CONTROLLER
265 static void net_poll_controller(struct net_device *dev);
268 static void get_dma_channel(struct net_device *dev);
269 static void release_dma_buff(struct net_local *lp);
272 /* Example routines you must write ;->. */
273 #define tx_done(dev) 1
276 * Permit 'cs89x0_dma=N' in the kernel boot environment
278 #if !defined(MODULE) && (ALLOW_DMA != 0)
279 static int g_cs89x0_dma;
281 static int __init dma_fn(char *str)
283 g_cs89x0_dma = simple_strtol(str,NULL,0);
287 __setup("cs89x0_dma=", dma_fn);
288 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
291 static int g_cs89x0_media__force;
293 static int __init media_fn(char *str)
295 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
296 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
297 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
301 __setup("cs89x0_media=", media_fn);
304 /* Check for a network adaptor of this type, and return '0' iff one exists.
305 If dev->base_addr == 0, probe all likely locations.
306 If dev->base_addr == 1, always return failure.
307 If dev->base_addr == 2, allocate space for the device and return success
308 (detachable devices only).
312 struct net_device * __init cs89x0_probe(int unit)
314 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
321 return ERR_PTR(-ENODEV);
323 sprintf(dev->name, "eth%d", unit);
324 netdev_boot_setup_check(dev);
329 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
331 if (io > 0x1ff) { /* Check a single specified location. */
332 err = cs89x0_probe1(dev, io, 0);
333 } else if (io != 0) { /* Don't probe at all. */
336 for (port = netcard_portlist; *port; port++) {
337 if (cs89x0_probe1(dev, *port, 0) == 0)
349 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
354 #if defined(CONFIG_MACH_IXDP2351)
356 readword(unsigned long base_addr, int portno)
358 return __raw_readw(base_addr + (portno << 1));
362 writeword(unsigned long base_addr, int portno, u16 value)
364 __raw_writew(value, base_addr + (portno << 1));
366 #elif defined(CONFIG_ARCH_IXDP2X01)
368 readword(unsigned long base_addr, int portno)
370 return __raw_readl(base_addr + (portno << 1));
374 writeword(unsigned long base_addr, int portno, u16 value)
376 __raw_writel(value, base_addr + (portno << 1));
378 #elif defined(CONFIG_ARCH_PNX010X)
380 readword(unsigned long base_addr, int portno)
382 return inw(base_addr + (portno << 1));
386 writeword(unsigned long base_addr, int portno, u16 value)
388 outw(value, base_addr + (portno << 1));
392 readword(unsigned long base_addr, int portno)
394 return inw(base_addr + portno);
398 writeword(unsigned long base_addr, int portno, u16 value)
400 outw(value, base_addr + portno);
405 readwords(unsigned long base_addr, int portno, void *buf, int length)
407 u8 *buf8 = (u8 *)buf;
412 tmp16 = readword(base_addr, portno);
414 *buf8++ = (u8)(tmp16 >> 8);
419 writewords(unsigned long base_addr, int portno, void *buf, int length)
421 u8 *buf8 = (u8 *)buf;
427 tmp16 |= (*buf8++) << 8;
428 writeword(base_addr, portno, tmp16);
433 readreg(struct net_device *dev, u16 regno)
435 writeword(dev->base_addr, ADD_PORT, regno);
436 return readword(dev->base_addr, DATA_PORT);
440 writereg(struct net_device *dev, u16 regno, u16 value)
442 writeword(dev->base_addr, ADD_PORT, regno);
443 writeword(dev->base_addr, DATA_PORT, value);
447 wait_eeprom_ready(struct net_device *dev)
449 int timeout = jiffies;
450 /* check to see if the EEPROM is ready, a timeout is used -
451 just in case EEPROM is ready when SI_BUSY in the
452 PP_SelfST is clear */
453 while(readreg(dev, PP_SelfST) & SI_BUSY)
454 if (jiffies - timeout >= 40)
460 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
464 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
465 for (i = 0; i < len; i++) {
466 if (wait_eeprom_ready(dev) < 0) return -1;
467 /* Now send the EEPROM read command and EEPROM location to read */
468 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
469 if (wait_eeprom_ready(dev) < 0) return -1;
470 buffer[i] = readreg(dev, PP_EEData);
471 if (net_debug > 3) printk("%04x ", buffer[i]);
473 if (net_debug > 3) printk("\n");
478 get_eeprom_cksum(int off, int len, int *buffer)
483 for (i = 0; i < len; i++)
491 #ifdef CONFIG_NET_POLL_CONTROLLER
493 * Polling receive - used by netconsole and other diagnostic tools
494 * to allow network i/o with interrupts disabled.
496 static void net_poll_controller(struct net_device *dev)
498 disable_irq(dev->irq);
499 net_interrupt(dev->irq, dev, NULL);
500 enable_irq(dev->irq);
504 /* This is the real probe routine. Linux has a history of friendly device
505 probes on the ISA bus. A good device probes avoids doing writes, and
506 verifies that the correct device exists and functions.
511 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
513 struct net_local *lp = netdev_priv(dev);
514 static unsigned version_printed;
517 unsigned rev_type = 0;
518 int eeprom_buff[CHKSUM_LEN];
521 SET_MODULE_OWNER(dev);
522 /* Initialize the device structure. */
524 memset(lp, 0, sizeof(*lp));
525 spin_lock_init(&lp->lock);
530 lp->dma = g_cs89x0_dma;
531 lp->dmasize = 16; /* Could make this an option... */
534 lp->force = g_cs89x0_media__force;
538 #ifdef CONFIG_ARCH_PNX010X
541 /* Map GPIO registers for the pins connected to the CS8900a. */
542 if (map_cirrus_gpio() < 0)
547 /* Map event-router registers. */
548 if (map_event_router() < 0)
554 unmap_event_router();
556 dev->base_addr = ioaddr;
558 for (i = 0 ; i < 3 ; i++)
562 /* Grab the region so we can find another board if autoIRQ fails. */
563 /* WTF is going on here? */
564 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
565 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
566 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
571 #ifdef CONFIG_SH_HICOSH4
572 /* truely reset the chip */
573 writeword(ioaddr, ADD_PORT, 0x0114);
574 writeword(ioaddr, DATA_PORT, 0x0040);
577 /* if they give us an odd I/O address, then do ONE write to
578 the address port, to get it back to address zero, where we
579 expect to find the EISA signature word. An IO with a base of 0x3
580 will skip the test for the ADD_PORT. */
583 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
584 if ((ioaddr & 2) != 2)
585 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
586 printk(KERN_ERR "%s: bad signature 0x%x\n",
587 dev->name, readword(ioaddr & ~3, ADD_PORT));
592 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
593 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
596 writeword(ioaddr, ADD_PORT, PP_ChipID);
598 tmp = readword(ioaddr, DATA_PORT);
599 if (tmp != CHIP_EISA_ID_SIG) {
600 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
601 CHIP_EISA_ID_SIG_STR "\n",
602 dev->name, ioaddr, DATA_PORT, tmp);
607 /* Fill in the 'dev' fields. */
608 dev->base_addr = ioaddr;
610 /* get the chip type */
611 rev_type = readreg(dev, PRODUCT_ID_ADD);
612 lp->chip_type = rev_type &~ REVISON_BITS;
613 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
615 /* Check the chip type and revision in order to set the correct send command
616 CS8920 revision C and CS8900 revision F can use the faster send. */
617 lp->send_cmd = TX_AFTER_381;
618 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
619 lp->send_cmd = TX_NOW;
620 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
621 lp->send_cmd = TX_NOW;
623 if (net_debug && version_printed++ == 0)
626 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
628 lp->chip_type==CS8900?'0':'2',
629 lp->chip_type==CS8920M?"M":"",
635 /* Here we read the current configuration of the chip. If there
636 is no Extended EEPROM then the idea is to not disturb the chip
637 configuration, it should have been correctly setup by automatic
638 EEPROM read on reset. So, if the chip says it read the EEPROM
639 the driver will always do *something* instead of complain that
642 #ifdef CONFIG_SH_HICOSH4
644 /* For the HiCO.SH4 board, things are different: we don't
645 have EEPROM, but there is some data in flash, so we go
646 get it there directly (MAC). */
649 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
651 confd = (__u16*) 0xa0013fc0;
653 confd = (__u16*) 0xa001ffc0;
655 cnt = (*confd++ & 0x00ff) >> 1;
659 switch (j & 0x0fff) {
661 for (i = 0; i < ETH_ALEN/2; i++) {
662 dev->dev_addr[i*2] = confd[i] & 0xFF;
663 dev->dev_addr[i*2+1] = confd[i] >> 8;
674 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
675 (EEPROM_OK|EEPROM_PRESENT)) {
677 for (i=0; i < ETH_ALEN/2; i++) {
679 Addr = readreg(dev, PP_IA+i*2);
680 dev->dev_addr[i*2] = Addr & 0xFF;
681 dev->dev_addr[i*2+1] = Addr >> 8;
684 /* Load the Adapter Configuration.
685 Note: Barring any more specific information from some
686 other source (ie EEPROM+Schematics), we would not know
687 how to operate a 10Base2 interface on the AUI port.
688 However, since we do read the status of HCB1 and use
689 settings that always result in calls to control_dc_dc(dev,0)
690 a BNC interface should work if the enable pin
691 (dc/dc converter) is on HCB1. It will be called AUI
695 i = readreg(dev, PP_LineCTL);
696 /* Preserve the setting of the HCB1 pin. */
697 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
698 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
699 /* Save the sqelch bit */
700 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
701 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
702 /* Check if the card is in 10Base-t only mode */
703 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
704 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
705 /* Check if the card is in AUI only mode */
706 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
707 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
708 /* Check if the card is in Auto mode. */
709 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
710 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
711 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
714 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
715 dev->name, i, lp->adapter_cnf);
717 /* IRQ. Other chips already probe, see below. */
718 if (lp->chip_type == CS8900)
719 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
721 printk( "[Cirrus EEPROM] ");
726 /* First check to see if an EEPROM is attached. */
727 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
729 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
732 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
733 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
734 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
735 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
736 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
737 /* Check if the chip was able to read its own configuration starting
739 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
740 (EEPROM_OK|EEPROM_PRESENT))
741 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
744 /* This reads an extended EEPROM that is not documented
745 in the CS8900 datasheet. */
747 /* get transmission control word but keep the autonegotiation bits */
748 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
749 /* Store adapter configuration */
750 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
751 /* Store ISA configuration */
752 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
753 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
755 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
756 /* store the initial memory base address */
757 for (i = 0; i < ETH_ALEN/2; i++) {
758 dev->dev_addr[i*2] = eeprom_buff[i];
759 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
762 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
763 dev->name, lp->adapter_cnf);
766 /* allow them to force multiple transceivers. If they force multiple, autosense */
769 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
770 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
771 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
772 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
773 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
774 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
775 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
779 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
780 dev->name, lp->force, lp->adapter_cnf);
782 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
784 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
786 /* FIXME: we don't set the Ethernet address on the command line. Use
787 ifconfig IFACE hw ether AABBCCDDEEFF */
789 printk(KERN_INFO "cs89x0 media %s%s%s",
790 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
791 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
792 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
794 lp->irq_map = 0xffff;
796 /* If this is a CS8900 then no pnp soft */
797 if (lp->chip_type != CS8900 &&
798 /* Check if the ISA IRQ has been set */
799 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
800 (i != 0 && i < CS8920_NO_INTS))) {
804 i = lp->isa_config & INT_NO_MASK;
805 if (lp->chip_type == CS8900) {
806 #if defined(CONFIG_MACH_IXDP2351) || defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX010X)
807 i = cs8900_irq_map[0];
809 /* Translate the IRQ using the IRQ mapping table. */
810 if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
811 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
813 i = cs8900_irq_map[i];
815 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
817 int irq_map_buff[IRQ_MAP_LEN/2];
819 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
821 irq_map_buff) >= 0) {
822 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
823 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
831 printk(" IRQ %d", dev->irq);
835 get_dma_channel(dev);
836 printk(", DMA %d", dev->dma);
841 printk(", programmed I/O");
844 /* print the ethernet address. */
846 for (i = 0; i < ETH_ALEN; i++)
848 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
851 dev->open = net_open;
852 dev->stop = net_close;
853 dev->tx_timeout = net_timeout;
854 dev->watchdog_timeo = HZ;
855 dev->hard_start_xmit = net_send_packet;
856 dev->get_stats = net_get_stats;
857 dev->set_multicast_list = set_multicast_list;
858 dev->set_mac_address = set_mac_address;
859 #ifdef CONFIG_NET_POLL_CONTROLLER
860 dev->poll_controller = net_poll_controller;
865 printk("cs89x0_probe1() successful\n");
867 retval = register_netdev(dev);
872 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
874 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
880 /*********************************
881 * This page contains DMA routines
882 **********************************/
886 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
889 get_dma_channel(struct net_device *dev)
891 struct net_local *lp = netdev_priv(dev);
895 lp->isa_config |= ISA_RxDMA;
897 if ((lp->isa_config & ANY_ISA_DMA) == 0)
899 dev->dma = lp->isa_config & DMA_NO_MASK;
900 if (lp->chip_type == CS8900)
902 if (dev->dma < 5 || dev->dma > 7) {
903 lp->isa_config &= ~ANY_ISA_DMA;
911 write_dma(struct net_device *dev, int chip_type, int dma)
913 struct net_local *lp = netdev_priv(dev);
914 if ((lp->isa_config & ANY_ISA_DMA) == 0)
916 if (chip_type == CS8900) {
917 writereg(dev, PP_CS8900_ISADMA, dma-5);
919 writereg(dev, PP_CS8920_ISADMA, dma);
924 set_dma_cfg(struct net_device *dev)
926 struct net_local *lp = netdev_priv(dev);
929 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
931 printk("set_dma_cfg(): no DMA\n");
934 if (lp->isa_config & ISA_RxDMA) {
935 lp->curr_rx_cfg |= RX_DMA_ONLY;
937 printk("set_dma_cfg(): RX_DMA_ONLY\n");
939 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
941 printk("set_dma_cfg(): AUTO_RX_DMA\n");
947 dma_bufcfg(struct net_device *dev)
949 struct net_local *lp = netdev_priv(dev);
951 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
957 dma_busctl(struct net_device *dev)
960 struct net_local *lp = netdev_priv(dev);
962 if (lp->isa_config & ANY_ISA_DMA)
963 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
964 if (lp->isa_config & DMA_BURST)
965 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
966 if (lp->dmasize == 64)
967 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
968 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
974 dma_rx(struct net_device *dev)
976 struct net_local *lp = netdev_priv(dev);
979 unsigned char *bp = lp->rx_dma_ptr;
981 status = bp[0] + (bp[1]<<8);
982 length = bp[2] + (bp[3]<<8);
985 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
986 dev->name, (unsigned long)bp, status, length);
988 if ((status & RX_OK) == 0) {
989 count_rx_errors(status, lp);
990 goto skip_this_frame;
993 /* Malloc up new buffer. */
994 skb = dev_alloc_skb(length + 2);
996 if (net_debug) /* I don't think we want to do this to a stressed system */
997 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
998 lp->stats.rx_dropped++;
1000 /* AKPM: advance bp to the next frame */
1002 bp += (length + 3) & ~3;
1003 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1004 lp->rx_dma_ptr = bp;
1007 skb_reserve(skb, 2); /* longword align L3 header */
1010 if (bp + length > lp->end_dma_buff) {
1011 int semi_cnt = lp->end_dma_buff - bp;
1012 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
1013 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
1016 memcpy(skb_put(skb,length), bp, length);
1018 bp += (length + 3) & ~3;
1019 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1020 lp->rx_dma_ptr = bp;
1022 if (net_debug > 3) {
1023 printk( "%s: received %d byte DMA packet of type %x\n",
1025 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1027 skb->protocol=eth_type_trans(skb,dev);
1029 dev->last_rx = jiffies;
1030 lp->stats.rx_packets++;
1031 lp->stats.rx_bytes += length;
1034 #endif /* ALLOW_DMA */
1036 void __init reset_chip(struct net_device *dev)
1038 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1039 struct net_local *lp = netdev_priv(dev);
1040 int ioaddr = dev->base_addr;
1042 int reset_start_time;
1044 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1049 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1050 if (lp->chip_type != CS8900) {
1051 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1052 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1053 outb(dev->irq, ioaddr + DATA_PORT);
1054 outb(0, ioaddr + DATA_PORT + 1);
1056 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1057 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1058 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1060 #endif /* IXDP2x01 */
1062 /* Wait until the chip is reset */
1063 reset_start_time = jiffies;
1064 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1070 control_dc_dc(struct net_device *dev, int on_not_off)
1072 struct net_local *lp = netdev_priv(dev);
1073 unsigned int selfcontrol;
1074 int timenow = jiffies;
1075 /* control the DC to DC convertor in the SelfControl register.
1076 Note: This is hooked up to a general purpose pin, might not
1077 always be a DC to DC convertor. */
1079 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1080 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1081 selfcontrol |= HCB1;
1083 selfcontrol &= ~HCB1;
1084 writereg(dev, PP_SelfCTL, selfcontrol);
1086 /* Wait for the DC/DC converter to power up - 500ms */
1087 while (jiffies - timenow < HZ)
1091 #define DETECTED_NONE 0
1092 #define DETECTED_RJ45H 1
1093 #define DETECTED_RJ45F 2
1094 #define DETECTED_AUI 3
1095 #define DETECTED_BNC 4
1098 detect_tp(struct net_device *dev)
1100 struct net_local *lp = netdev_priv(dev);
1101 int timenow = jiffies;
1104 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1106 /* If connected to another full duplex capable 10-Base-T card the link pulses
1107 seem to be lost when the auto detect bit in the LineCTL is set.
1108 To overcome this the auto detect bit will be cleared whilst testing the
1109 10-Base-T interface. This would not be necessary for the sparrow chip but
1110 is simpler to do it anyway. */
1111 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1112 control_dc_dc(dev, 0);
1114 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1115 for (timenow = jiffies; jiffies - timenow < 15; )
1117 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1118 return DETECTED_NONE;
1120 if (lp->chip_type == CS8900) {
1121 switch (lp->force & 0xf0) {
1124 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1125 return DETECTED_NONE;
1127 /* CS8900 doesn't support AUTO, change to HALF*/
1129 lp->force &= ~FORCE_AUTO;
1130 lp->force |= FORCE_HALF;
1135 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1138 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1140 switch (lp->force & 0xf0) {
1142 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1145 lp->auto_neg_cnf = 0;
1148 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1152 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1154 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1155 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1156 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1157 if (jiffies - timenow > 4000) {
1158 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1163 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1166 return DETECTED_RJ45F;
1168 return DETECTED_RJ45H;
1171 /* send a test packet - return true if carrier bits are ok */
1173 send_test_pkt(struct net_device *dev)
1175 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1176 0, 46, /* A 46 in network order */
1177 0, 0, /* DSAP=0 & SSAP=0 fields */
1178 0xf3, 0 /* Control (Test Req + P bit set) */ };
1179 long timenow = jiffies;
1181 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1183 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1184 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1186 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1187 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1189 /* Test to see if the chip has allocated memory for the packet */
1190 while (jiffies - timenow < 5)
1191 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1193 if (jiffies - timenow >= 5)
1194 return 0; /* this shouldn't happen */
1196 /* Write the contents of the packet */
1197 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1199 if (net_debug > 1) printk("Sending test packet ");
1200 /* wait a couple of jiffies for packet to be received */
1201 for (timenow = jiffies; jiffies - timenow < 3; )
1203 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1204 if (net_debug > 1) printk("succeeded\n");
1207 if (net_debug > 1) printk("failed\n");
1213 detect_aui(struct net_device *dev)
1215 struct net_local *lp = netdev_priv(dev);
1217 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1218 control_dc_dc(dev, 0);
1220 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1222 if (send_test_pkt(dev))
1223 return DETECTED_AUI;
1225 return DETECTED_NONE;
1229 detect_bnc(struct net_device *dev)
1231 struct net_local *lp = netdev_priv(dev);
1233 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1234 control_dc_dc(dev, 1);
1236 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1238 if (send_test_pkt(dev))
1239 return DETECTED_BNC;
1241 return DETECTED_NONE;
1246 write_irq(struct net_device *dev, int chip_type, int irq)
1250 if (chip_type == CS8900) {
1251 /* Search the mapping table for the corresponding IRQ pin. */
1252 for (i = 0; i != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++)
1253 if (cs8900_irq_map[i] == irq)
1256 if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
1258 writereg(dev, PP_CS8900_ISAINT, i);
1260 writereg(dev, PP_CS8920_ISAINT, irq);
1264 /* Open/initialize the board. This is called (in the current kernel)
1265 sometime after booting when the 'ifconfig' program is run.
1267 This routine should set everything up anew at each open, even
1268 registers that "should" only need to be set once at boot, so that
1269 there is non-reboot way to recover if something goes wrong.
1272 /* AKPM: do we need to do any locking here? */
1275 net_open(struct net_device *dev)
1277 struct net_local *lp = netdev_priv(dev);
1282 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1284 /* Allow interrupts to be generated by the chip */
1285 /* Cirrus' release had this: */
1287 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1289 /* And 2.3.47 had this: */
1290 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1292 for (i = 2; i < CS8920_NO_INTS; i++) {
1293 if ((1 << i) & lp->irq_map) {
1294 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1296 write_irq(dev, lp->chip_type, i);
1297 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1303 if (i >= CS8920_NO_INTS) {
1304 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1305 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1313 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX010X)
1314 if (((1 << dev->irq) & lp->irq_map) == 0) {
1315 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1316 dev->name, dev->irq, lp->irq_map);
1321 /* FIXME: Cirrus' release had this: */
1322 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1323 /* And 2.3.47 had this: */
1325 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1327 write_irq(dev, lp->chip_type, dev->irq);
1328 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1331 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1338 if (lp->isa_config & ANY_ISA_DMA) {
1339 unsigned long flags;
1340 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1341 get_order(lp->dmasize * 1024));
1343 if (!lp->dma_buff) {
1344 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1347 if (net_debug > 1) {
1348 printk( "%s: dma %lx %lx\n",
1350 (unsigned long)lp->dma_buff,
1351 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1353 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1354 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1355 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1358 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1359 if (request_dma(dev->dma, dev->name)) {
1360 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1363 write_dma(dev, lp->chip_type, dev->dma);
1364 lp->rx_dma_ptr = lp->dma_buff;
1365 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1366 spin_lock_irqsave(&lp->lock, flags);
1367 disable_dma(dev->dma);
1368 clear_dma_ff(dev->dma);
1369 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1370 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1371 set_dma_count(dev->dma, lp->dmasize*1024);
1372 enable_dma(dev->dma);
1373 spin_unlock_irqrestore(&lp->lock, flags);
1376 #endif /* ALLOW_DMA */
1378 /* set the Ethernet address */
1379 for (i=0; i < ETH_ALEN/2; i++)
1380 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1382 /* while we're testing the interface, leave interrupts disabled */
1383 writereg(dev, PP_BusCTL, MEMORY_ON);
1385 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1386 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1387 lp->linectl = LOW_RX_SQUELCH;
1391 /* check to make sure that they have the "right" hardware available */
1392 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1393 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1394 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1395 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1396 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1398 #ifdef CONFIG_ARCH_PNX010X
1399 result = A_CNF_10B_T;
1402 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1405 release_dma_buff(lp);
1407 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1408 free_irq(dev->irq, dev);
1413 /* set the hardware to the configured choice */
1414 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1415 case A_CNF_MEDIA_10B_T:
1416 result = detect_tp(dev);
1417 if (result==DETECTED_NONE) {
1418 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1419 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1420 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1423 case A_CNF_MEDIA_AUI:
1424 result = detect_aui(dev);
1425 if (result==DETECTED_NONE) {
1426 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1427 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1428 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1431 case A_CNF_MEDIA_10B_2:
1432 result = detect_bnc(dev);
1433 if (result==DETECTED_NONE) {
1434 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1435 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1436 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1439 case A_CNF_MEDIA_AUTO:
1440 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1441 if (lp->adapter_cnf & A_CNF_10B_T)
1442 if ((result = detect_tp(dev)) != DETECTED_NONE)
1444 if (lp->adapter_cnf & A_CNF_AUI)
1445 if ((result = detect_aui(dev)) != DETECTED_NONE)
1447 if (lp->adapter_cnf & A_CNF_10B_2)
1448 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1450 printk(KERN_ERR "%s: no media detected\n", dev->name);
1455 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1457 case DETECTED_RJ45H:
1458 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1460 case DETECTED_RJ45F:
1461 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1464 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1467 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1471 /* Turn on both receive and transmit operations */
1472 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1474 /* Receive only error free packets addressed to this card */
1476 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1478 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1480 if (lp->isa_config & STREAM_TRANSFER)
1481 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1485 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1487 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1488 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1490 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1494 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1496 /* now that we've got our act together, enable everything */
1497 writereg(dev, PP_BusCTL, ENABLE_IRQ
1498 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1503 netif_start_queue(dev);
1505 printk("cs89x0: net_open() succeeded\n");
1511 static void net_timeout(struct net_device *dev)
1513 /* If we get here, some higher level has decided we are broken.
1514 There should really be a "kick me" function call instead. */
1515 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1516 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1517 /* Try to restart the adaptor. */
1518 netif_wake_queue(dev);
1521 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1523 struct net_local *lp = netdev_priv(dev);
1525 if (net_debug > 3) {
1526 printk("%s: sent %d byte packet of type %x\n",
1527 dev->name, skb->len,
1528 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1531 /* keep the upload from being interrupted, since we
1532 ask the chip to start transmitting before the
1533 whole packet has been completely uploaded. */
1535 spin_lock_irq(&lp->lock);
1536 netif_stop_queue(dev);
1538 /* initiate a transmit sequence */
1539 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1540 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1542 /* Test to see if the chip has allocated memory for the packet */
1543 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1545 * Gasp! It hasn't. But that shouldn't happen since
1546 * we're waiting for TxOk, so return 1 and requeue this packet.
1549 spin_unlock_irq(&lp->lock);
1550 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1553 /* Write the contents of the packet */
1554 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1555 spin_unlock_irq(&lp->lock);
1556 lp->stats.tx_bytes += skb->len;
1557 dev->trans_start = jiffies;
1558 dev_kfree_skb (skb);
1561 * We DO NOT call netif_wake_queue() here.
1562 * We also DO NOT call netif_start_queue().
1564 * Either of these would cause another bottom half run through
1565 * net_send_packet() before this packet has fully gone out. That causes
1566 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1567 * a dog. We just return and wait for the Tx completion interrupt handler
1568 * to restart the netdevice layer
1574 /* The typical workload of the driver:
1575 Handle the network interface interrupts. */
1577 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1579 struct net_device *dev = dev_id;
1580 struct net_local *lp;
1584 ioaddr = dev->base_addr;
1585 lp = netdev_priv(dev);
1587 /* we MUST read all the events out of the ISQ, otherwise we'll never
1588 get interrupted again. As a consequence, we can't have any limit
1589 on the number of times we loop in the interrupt handler. The
1590 hardware guarantees that eventually we'll run out of events. Of
1591 course, if you're on a slow machine, and packets are arriving
1592 faster than you can read them off, you're screwed. Hasta la
1594 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1595 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1597 switch(status & ISQ_EVENT_MASK) {
1598 case ISQ_RECEIVER_EVENT:
1599 /* Got a packet(s). */
1602 case ISQ_TRANSMITTER_EVENT:
1603 lp->stats.tx_packets++;
1604 netif_wake_queue(dev); /* Inform upper layers. */
1605 if ((status & ( TX_OK |
1609 TX_16_COL)) != TX_OK) {
1610 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1611 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1612 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1613 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1614 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1617 case ISQ_BUFFER_EVENT:
1618 if (status & READY_FOR_TX) {
1619 /* we tried to transmit a packet earlier,
1620 but inexplicably ran out of buffers.
1621 That shouldn't happen since we only ever
1622 load one packet. Shrug. Do the right
1624 netif_wake_queue(dev); /* Inform upper layers. */
1626 if (status & TX_UNDERRUN) {
1627 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1628 lp->send_underrun++;
1629 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1630 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1631 /* transmit cycle is done, although
1632 frame wasn't transmitted - this
1633 avoids having to wait for the upper
1634 layers to timeout on us, in the
1635 event of a tx underrun */
1636 netif_wake_queue(dev); /* Inform upper layers. */
1639 if (lp->use_dma && (status & RX_DMA)) {
1640 int count = readreg(dev, PP_DmaFrameCnt);
1643 printk("%s: receiving %d DMA frames\n", dev->name, count);
1644 if (net_debug > 2 && count >1)
1645 printk("%s: receiving %d DMA frames\n", dev->name, count);
1648 count = readreg(dev, PP_DmaFrameCnt);
1649 if (net_debug > 2 && count > 0)
1650 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1655 case ISQ_RX_MISS_EVENT:
1656 lp->stats.rx_missed_errors += (status >>6);
1658 case ISQ_TX_COL_EVENT:
1659 lp->stats.collisions += (status >>6);
1663 return IRQ_RETVAL(handled);
1667 count_rx_errors(int status, struct net_local *lp)
1669 lp->stats.rx_errors++;
1670 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1671 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1672 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1674 lp->stats.rx_crc_errors++;
1675 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1679 /* We have a good packet(s), get it/them out of the buffers. */
1681 net_rx(struct net_device *dev)
1683 struct net_local *lp = netdev_priv(dev);
1684 struct sk_buff *skb;
1687 int ioaddr = dev->base_addr;
1688 status = readword(ioaddr, RX_FRAME_PORT);
1689 length = readword(ioaddr, RX_FRAME_PORT);
1691 if ((status & RX_OK) == 0) {
1692 count_rx_errors(status, lp);
1696 /* Malloc up new buffer. */
1697 skb = dev_alloc_skb(length + 2);
1699 #if 0 /* Again, this seems a cruel thing to do */
1700 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1702 lp->stats.rx_dropped++;
1705 skb_reserve(skb, 2); /* longword align L3 header */
1708 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1710 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1712 if (net_debug > 3) {
1713 printk( "%s: received %d byte packet of type %x\n",
1715 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1718 skb->protocol=eth_type_trans(skb,dev);
1720 dev->last_rx = jiffies;
1721 lp->stats.rx_packets++;
1722 lp->stats.rx_bytes += length;
1726 static void release_dma_buff(struct net_local *lp)
1729 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1730 lp->dma_buff = NULL;
1735 /* The inverse routine to net_open(). */
1737 net_close(struct net_device *dev)
1740 struct net_local *lp = netdev_priv(dev);
1743 netif_stop_queue(dev);
1745 writereg(dev, PP_RxCFG, 0);
1746 writereg(dev, PP_TxCFG, 0);
1747 writereg(dev, PP_BufCFG, 0);
1748 writereg(dev, PP_BusCTL, 0);
1750 free_irq(dev->irq, dev);
1753 if (lp->use_dma && lp->dma) {
1755 release_dma_buff(lp);
1759 /* Update the statistics here. */
1763 /* Get the current statistics. This may be called with the card open or
1765 static struct net_device_stats *
1766 net_get_stats(struct net_device *dev)
1768 struct net_local *lp = netdev_priv(dev);
1769 unsigned long flags;
1771 spin_lock_irqsave(&lp->lock, flags);
1772 /* Update the statistics from the device registers. */
1773 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1774 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1775 spin_unlock_irqrestore(&lp->lock, flags);
1780 static void set_multicast_list(struct net_device *dev)
1782 struct net_local *lp = netdev_priv(dev);
1783 unsigned long flags;
1785 spin_lock_irqsave(&lp->lock, flags);
1786 if(dev->flags&IFF_PROMISC)
1788 lp->rx_mode = RX_ALL_ACCEPT;
1790 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1792 /* The multicast-accept list is initialized to accept-all, and we
1793 rely on higher-level filtering for now. */
1794 lp->rx_mode = RX_MULTCAST_ACCEPT;
1799 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1801 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1802 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1803 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1804 spin_unlock_irqrestore(&lp->lock, flags);
1808 static int set_mac_address(struct net_device *dev, void *p)
1811 struct sockaddr *addr = p;
1814 if (netif_running(dev))
1817 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1820 printk("%s: Setting MAC address to ", dev->name);
1821 for (i = 0; i < dev->addr_len; i++)
1822 printk(" %2.2x", dev->dev_addr[i]);
1825 /* set the Ethernet address */
1826 for (i=0; i < ETH_ALEN/2; i++)
1827 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1834 static struct net_device *dev_cs89x0;
1837 * Support the 'debug' module parm even if we're compiled for non-debug to
1838 * avoid breaking someone's startup scripts
1844 static char media[8];
1845 static int duplex=-1;
1847 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1849 static int dmasize=16; /* or 64 */
1851 module_param(io, int, 0);
1852 module_param(irq, int, 0);
1853 module_param(debug, int, 0);
1854 module_param_string(media, media, sizeof(media), 0);
1855 module_param(duplex, int, 0);
1856 module_param(dma , int, 0);
1857 module_param(dmasize , int, 0);
1858 module_param(use_dma , int, 0);
1859 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1860 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1862 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1864 MODULE_PARM_DESC(debug, "(ignored)");
1866 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1867 /* No other value than -1 for duplex seems to be currently interpreted */
1868 MODULE_PARM_DESC(duplex, "(ignored)");
1870 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1871 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1872 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1874 MODULE_PARM_DESC(dma , "(ignored)");
1875 MODULE_PARM_DESC(dmasize , "(ignored)");
1876 MODULE_PARM_DESC(use_dma , "(ignored)");
1879 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1880 MODULE_LICENSE("GPL");
1884 * media=t - specify media type
1888 * duplex=0 - specify forced half/full/autonegotiate duplex
1889 * debug=# - debug level
1892 * Default Chip Configuration:
1893 * DMA Burst = enabled
1894 * IOCHRDY Enabled = enabled
1896 * CS8900 defaults to half-duplex if not specified on command-line
1897 * CS8920 defaults to autoneg if not specified on command-line
1898 * Use reset defaults for other config parameters
1901 * media type specified is supported (circuitry is present)
1902 * if memory address is > 1MB, then required mem decode hw is present
1903 * if 10B-2, then agent other than driver will enable DC/DC converter
1904 (hw or software util)
1912 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1913 struct net_local *lp;
1925 dev->base_addr = io;
1926 lp = netdev_priv(dev);
1930 lp->use_dma = use_dma;
1932 lp->dmasize = dmasize;
1936 spin_lock_init(&lp->lock);
1938 /* boy, they'd better get these right */
1939 if (!strcmp(media, "rj45"))
1940 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1941 else if (!strcmp(media, "aui"))
1942 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1943 else if (!strcmp(media, "bnc"))
1944 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1946 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1949 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1952 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1953 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1956 } else if (io <= 0x1ff) {
1962 if (use_dma && dmasize != 16 && dmasize != 64) {
1963 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1968 ret = cs89x0_probe1(dev, io, 1);
1980 cleanup_module(void)
1982 unregister_netdev(dev_cs89x0);
1983 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1984 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1985 free_netdev(dev_cs89x0);
1991 * version-control: t
1992 * kept-new-versions: 5