1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
6 Written 1996 by Russell Nelson, with reference to skeleton.c
7 written 1993-1994 by Donald Becker.
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
12 The author may be reached at nelson@crynwr.com, Crynwr
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
17 Mike Cruse : mcruse@cti-ltd.com
18 : Changes for Linux 2.0 compatibility.
19 : Added dev_id parameter in net_interrupt(),
20 : request_irq() and free_irq(). Just NULL for now.
22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
23 : in net_open() and net_close() so kerneld would know
24 : that the module is in use and wouldn't eject the
27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
28 : as an example. Disabled autoprobing in init_module(),
29 : not a good thing to do to other devices while Linux
30 : is running from all accounts.
32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
35 : email: ethernet@crystal.cirrus.com
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
39 Andrew Morton : Kernel 2.3.48
40 : Handle kmalloc() failures
41 : Other resource allocation fixes
43 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
44 : If ALLOW_DMA is true, make DMA runtime selectable
45 : Folded in changes from Cirrus (Melody Lee
46 : <klee@crystal.cirrus.com>)
47 : Don't call netif_wake_queue() in net_send_packet()
48 : Fixed an out-of-mem bug in dma_rx()
49 : Updated Documentation/networking/cs89x0.txt
51 Andrew Morton : Kernel 2.3.99-pre1
52 : Use skb_reserve to longword align IP header (two places)
53 : Remove a delay loop from dma_rx()
54 : Replace '100' with HZ
55 : Clean up a couple of skb API abuses
56 : Added 'cs89x0_dma=N' kernel boot option
57 : Correctly initialise lp->lock in non-module compile
59 Andrew Morton : Kernel 2.3.99-pre4-1
60 : MOD_INC/DEC race fix (see
61 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
63 Andrew Morton : Kernel 2.4.0-test7-pre2
64 : Enhanced EEPROM support to cover more devices,
65 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
66 : (Jason Gunthorpe <jgg@ualberta.ca>)
68 Andrew Morton : Kernel 2.4.0-test11-pre4
69 : Use dev->name in request_*() (Andrey Panin)
70 : Fix an error-path memleak in init_module()
71 : Preserve return value from request_irq()
72 : Fix type of `media' module parm (Keith Owens)
73 : Use SET_MODULE_OWNER()
74 : Tidied up strange request_irq() abuse in net_open().
76 Andrew Morton : Kernel 2.4.3-pre1
77 : Request correct number of pages for DMA (Hugh Dickens)
78 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
79 : because unregister_netdev() calls get_stats.
80 : Make `version[]' __initdata
81 : Uninlined the read/write reg/word functions.
83 Oskar Schirmer : oskar@scara.com
84 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
86 Deepak Saxena : dsaxena@plexity.net
87 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
89 Dmitry Pervushin : dpervushin@ru.mvista.com
90 : PNX010X platform support
92 Deepak Saxena : dsaxena@plexity.net
93 : Intel IXDP2351 platform support
95 Dmitry Pervushin : dpervushin@ru.mvista.com
96 : PNX010X platform support
100 /* Always include 'config.h' first in case the user wants to turn on
101 or override something. */
102 #include <linux/module.h>
105 * Set this to zero to disable DMA code
107 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
108 * module options so we don't break any startup scripts.
110 #ifndef CONFIG_ISA_DMA_API
117 * Set this to zero to remove all the debug statements via
118 * dead code elimination
125 Crynwr packet driver epktisa.
127 Crystal Semiconductor data sheets.
131 #include <linux/errno.h>
132 #include <linux/netdevice.h>
133 #include <linux/etherdevice.h>
134 #include <linux/kernel.h>
135 #include <linux/types.h>
136 #include <linux/fcntl.h>
137 #include <linux/interrupt.h>
138 #include <linux/ioport.h>
139 #include <linux/in.h>
140 #include <linux/skbuff.h>
141 #include <linux/slab.h>
142 #include <linux/spinlock.h>
143 #include <linux/string.h>
144 #include <linux/init.h>
145 #include <linux/bitops.h>
146 #include <linux/delay.h>
148 #include <asm/system.h>
157 static char version[] __initdata =
158 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n";
160 #define DRV_NAME "cs89x0"
162 /* First, a few definitions that the brave might change.
163 A zero-terminated list of I/O addresses to be probed. Some special flags..
164 Addr & 1 = Read back the address port, look for signature and reset
165 the page window before probing
166 Addr & 3 = Reset the page window and probe
167 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
168 but it is possible that a Cirrus board could be plugged into the ISA
170 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
171 them to system IRQ numbers. This mapping is card specific and is set to
172 the configuration of the Cirrus Eval board for this chip. */
173 #if defined(CONFIG_SH_HICOSH4)
174 static unsigned int netcard_portlist[] __used __initdata =
176 static unsigned int cs8900_irq_map[] = {1,0,0,0};
177 #elif defined(CONFIG_MACH_IXDP2351)
178 static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
179 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
181 #elif defined(CONFIG_ARCH_IXDP2X01)
183 static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
184 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
185 #elif defined(CONFIG_ARCH_PNX010X)
187 #include <mach/gpio.h>
188 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
189 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
190 static unsigned int netcard_portlist[] __used __initdata = {CIRRUS_DEFAULT_BASE, 0};
191 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
192 #elif defined(CONFIG_MACH_MX31ADS)
193 #include <mach/board-mx31ads.h>
194 static unsigned int netcard_portlist[] __used __initdata = {
195 PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
197 static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
199 static unsigned int netcard_portlist[] __used __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);
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);
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];
520 DECLARE_MAC_BUF(mac);
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));
594 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
595 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 #ifdef CONFIG_CS89x0_NONISA_IRQ
807 i = cs8900_irq_map[0];
809 /* Translate the IRQ using the IRQ mapping table. */
810 if (i >= ARRAY_SIZE(cs8900_irq_map))
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. */
845 printk(", MAC %s", print_mac(mac, dev->dev_addr));
847 dev->open = net_open;
848 dev->stop = net_close;
849 dev->tx_timeout = net_timeout;
850 dev->watchdog_timeo = HZ;
851 dev->hard_start_xmit = net_send_packet;
852 dev->get_stats = net_get_stats;
853 dev->set_multicast_list = set_multicast_list;
854 dev->set_mac_address = set_mac_address;
855 #ifdef CONFIG_NET_POLL_CONTROLLER
856 dev->poll_controller = net_poll_controller;
861 printk("cs89x0_probe1() successful\n");
863 retval = register_netdev(dev);
868 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
870 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
876 /*********************************
877 * This page contains DMA routines
878 **********************************/
882 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
885 get_dma_channel(struct net_device *dev)
887 struct net_local *lp = netdev_priv(dev);
891 lp->isa_config |= ISA_RxDMA;
893 if ((lp->isa_config & ANY_ISA_DMA) == 0)
895 dev->dma = lp->isa_config & DMA_NO_MASK;
896 if (lp->chip_type == CS8900)
898 if (dev->dma < 5 || dev->dma > 7) {
899 lp->isa_config &= ~ANY_ISA_DMA;
907 write_dma(struct net_device *dev, int chip_type, int dma)
909 struct net_local *lp = netdev_priv(dev);
910 if ((lp->isa_config & ANY_ISA_DMA) == 0)
912 if (chip_type == CS8900) {
913 writereg(dev, PP_CS8900_ISADMA, dma-5);
915 writereg(dev, PP_CS8920_ISADMA, dma);
920 set_dma_cfg(struct net_device *dev)
922 struct net_local *lp = netdev_priv(dev);
925 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
927 printk("set_dma_cfg(): no DMA\n");
930 if (lp->isa_config & ISA_RxDMA) {
931 lp->curr_rx_cfg |= RX_DMA_ONLY;
933 printk("set_dma_cfg(): RX_DMA_ONLY\n");
935 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
937 printk("set_dma_cfg(): AUTO_RX_DMA\n");
943 dma_bufcfg(struct net_device *dev)
945 struct net_local *lp = netdev_priv(dev);
947 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
953 dma_busctl(struct net_device *dev)
956 struct net_local *lp = netdev_priv(dev);
958 if (lp->isa_config & ANY_ISA_DMA)
959 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
960 if (lp->isa_config & DMA_BURST)
961 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
962 if (lp->dmasize == 64)
963 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
964 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
970 dma_rx(struct net_device *dev)
972 struct net_local *lp = netdev_priv(dev);
975 unsigned char *bp = lp->rx_dma_ptr;
977 status = bp[0] + (bp[1]<<8);
978 length = bp[2] + (bp[3]<<8);
981 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
982 dev->name, (unsigned long)bp, status, length);
984 if ((status & RX_OK) == 0) {
985 count_rx_errors(status, lp);
986 goto skip_this_frame;
989 /* Malloc up new buffer. */
990 skb = dev_alloc_skb(length + 2);
992 if (net_debug) /* I don't think we want to do this to a stressed system */
993 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
994 lp->stats.rx_dropped++;
996 /* AKPM: advance bp to the next frame */
998 bp += (length + 3) & ~3;
999 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1000 lp->rx_dma_ptr = bp;
1003 skb_reserve(skb, 2); /* longword align L3 header */
1005 if (bp + length > lp->end_dma_buff) {
1006 int semi_cnt = lp->end_dma_buff - bp;
1007 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
1008 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
1011 memcpy(skb_put(skb,length), bp, length);
1013 bp += (length + 3) & ~3;
1014 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1015 lp->rx_dma_ptr = bp;
1017 if (net_debug > 3) {
1018 printk( "%s: received %d byte DMA packet of type %x\n",
1020 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1022 skb->protocol=eth_type_trans(skb,dev);
1024 dev->last_rx = jiffies;
1025 lp->stats.rx_packets++;
1026 lp->stats.rx_bytes += length;
1029 #endif /* ALLOW_DMA */
1031 void __init reset_chip(struct net_device *dev)
1033 #if !defined(CONFIG_MACH_MX31ADS)
1034 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1035 struct net_local *lp = netdev_priv(dev);
1036 int ioaddr = dev->base_addr;
1038 int reset_start_time;
1040 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1045 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1046 if (lp->chip_type != CS8900) {
1047 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1048 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1049 outb(dev->irq, ioaddr + DATA_PORT);
1050 outb(0, ioaddr + DATA_PORT + 1);
1052 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1053 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1054 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1056 #endif /* IXDP2x01 */
1058 /* Wait until the chip is reset */
1059 reset_start_time = jiffies;
1060 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1062 #endif /* !CONFIG_MACH_MX31ADS */
1067 control_dc_dc(struct net_device *dev, int on_not_off)
1069 struct net_local *lp = netdev_priv(dev);
1070 unsigned int selfcontrol;
1071 int timenow = jiffies;
1072 /* control the DC to DC convertor in the SelfControl register.
1073 Note: This is hooked up to a general purpose pin, might not
1074 always be a DC to DC convertor. */
1076 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1077 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1078 selfcontrol |= HCB1;
1080 selfcontrol &= ~HCB1;
1081 writereg(dev, PP_SelfCTL, selfcontrol);
1083 /* Wait for the DC/DC converter to power up - 500ms */
1084 while (jiffies - timenow < HZ)
1088 #define DETECTED_NONE 0
1089 #define DETECTED_RJ45H 1
1090 #define DETECTED_RJ45F 2
1091 #define DETECTED_AUI 3
1092 #define DETECTED_BNC 4
1095 detect_tp(struct net_device *dev)
1097 struct net_local *lp = netdev_priv(dev);
1098 int timenow = jiffies;
1101 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1103 /* If connected to another full duplex capable 10-Base-T card the link pulses
1104 seem to be lost when the auto detect bit in the LineCTL is set.
1105 To overcome this the auto detect bit will be cleared whilst testing the
1106 10-Base-T interface. This would not be necessary for the sparrow chip but
1107 is simpler to do it anyway. */
1108 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1109 control_dc_dc(dev, 0);
1111 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1112 for (timenow = jiffies; jiffies - timenow < 15; )
1114 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1115 return DETECTED_NONE;
1117 if (lp->chip_type == CS8900) {
1118 switch (lp->force & 0xf0) {
1121 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1122 return DETECTED_NONE;
1124 /* CS8900 doesn't support AUTO, change to HALF*/
1126 lp->force &= ~FORCE_AUTO;
1127 lp->force |= FORCE_HALF;
1132 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1135 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1137 switch (lp->force & 0xf0) {
1139 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1142 lp->auto_neg_cnf = 0;
1145 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1149 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1151 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1152 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1153 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1154 if (jiffies - timenow > 4000) {
1155 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1160 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1163 return DETECTED_RJ45F;
1165 return DETECTED_RJ45H;
1168 /* send a test packet - return true if carrier bits are ok */
1170 send_test_pkt(struct net_device *dev)
1172 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1173 0, 46, /* A 46 in network order */
1174 0, 0, /* DSAP=0 & SSAP=0 fields */
1175 0xf3, 0 /* Control (Test Req + P bit set) */ };
1176 long timenow = jiffies;
1178 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1180 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1181 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1183 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1184 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1186 /* Test to see if the chip has allocated memory for the packet */
1187 while (jiffies - timenow < 5)
1188 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1190 if (jiffies - timenow >= 5)
1191 return 0; /* this shouldn't happen */
1193 /* Write the contents of the packet */
1194 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1196 if (net_debug > 1) printk("Sending test packet ");
1197 /* wait a couple of jiffies for packet to be received */
1198 for (timenow = jiffies; jiffies - timenow < 3; )
1200 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1201 if (net_debug > 1) printk("succeeded\n");
1204 if (net_debug > 1) printk("failed\n");
1210 detect_aui(struct net_device *dev)
1212 struct net_local *lp = netdev_priv(dev);
1214 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1215 control_dc_dc(dev, 0);
1217 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1219 if (send_test_pkt(dev))
1220 return DETECTED_AUI;
1222 return DETECTED_NONE;
1226 detect_bnc(struct net_device *dev)
1228 struct net_local *lp = netdev_priv(dev);
1230 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1231 control_dc_dc(dev, 1);
1233 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1235 if (send_test_pkt(dev))
1236 return DETECTED_BNC;
1238 return DETECTED_NONE;
1243 write_irq(struct net_device *dev, int chip_type, int irq)
1247 if (chip_type == CS8900) {
1248 /* Search the mapping table for the corresponding IRQ pin. */
1249 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1250 if (cs8900_irq_map[i] == irq)
1253 if (i == ARRAY_SIZE(cs8900_irq_map))
1255 writereg(dev, PP_CS8900_ISAINT, i);
1257 writereg(dev, PP_CS8920_ISAINT, irq);
1261 /* Open/initialize the board. This is called (in the current kernel)
1262 sometime after booting when the 'ifconfig' program is run.
1264 This routine should set everything up anew at each open, even
1265 registers that "should" only need to be set once at boot, so that
1266 there is non-reboot way to recover if something goes wrong.
1269 /* AKPM: do we need to do any locking here? */
1272 net_open(struct net_device *dev)
1274 struct net_local *lp = netdev_priv(dev);
1279 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1281 /* Allow interrupts to be generated by the chip */
1282 /* Cirrus' release had this: */
1284 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1286 /* And 2.3.47 had this: */
1287 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1289 for (i = 2; i < CS8920_NO_INTS; i++) {
1290 if ((1 << i) & lp->irq_map) {
1291 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1293 write_irq(dev, lp->chip_type, i);
1294 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1300 if (i >= CS8920_NO_INTS) {
1301 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1302 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1310 #ifndef CONFIG_CS89x0_NONISA_IRQ
1311 if (((1 << dev->irq) & lp->irq_map) == 0) {
1312 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1313 dev->name, dev->irq, lp->irq_map);
1318 /* FIXME: Cirrus' release had this: */
1319 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1320 /* And 2.3.47 had this: */
1322 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1324 write_irq(dev, lp->chip_type, dev->irq);
1325 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1328 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1335 if (lp->isa_config & ANY_ISA_DMA) {
1336 unsigned long flags;
1337 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1338 get_order(lp->dmasize * 1024));
1340 if (!lp->dma_buff) {
1341 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1344 if (net_debug > 1) {
1345 printk( "%s: dma %lx %lx\n",
1347 (unsigned long)lp->dma_buff,
1348 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1350 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1351 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1352 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1355 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1356 if (request_dma(dev->dma, dev->name)) {
1357 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1360 write_dma(dev, lp->chip_type, dev->dma);
1361 lp->rx_dma_ptr = lp->dma_buff;
1362 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1363 spin_lock_irqsave(&lp->lock, flags);
1364 disable_dma(dev->dma);
1365 clear_dma_ff(dev->dma);
1366 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1367 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1368 set_dma_count(dev->dma, lp->dmasize*1024);
1369 enable_dma(dev->dma);
1370 spin_unlock_irqrestore(&lp->lock, flags);
1373 #endif /* ALLOW_DMA */
1375 /* set the Ethernet address */
1376 for (i=0; i < ETH_ALEN/2; i++)
1377 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1379 /* while we're testing the interface, leave interrupts disabled */
1380 writereg(dev, PP_BusCTL, MEMORY_ON);
1382 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1383 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1384 lp->linectl = LOW_RX_SQUELCH;
1388 /* check to make sure that they have the "right" hardware available */
1389 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1390 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1391 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1392 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1393 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1395 #ifdef CONFIG_ARCH_PNX010X
1396 result = A_CNF_10B_T;
1399 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1404 release_dma_buff(lp);
1406 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1407 free_irq(dev->irq, dev);
1412 /* set the hardware to the configured choice */
1413 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1414 case A_CNF_MEDIA_10B_T:
1415 result = detect_tp(dev);
1416 if (result==DETECTED_NONE) {
1417 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1418 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1419 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1422 case A_CNF_MEDIA_AUI:
1423 result = detect_aui(dev);
1424 if (result==DETECTED_NONE) {
1425 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1426 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1427 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1430 case A_CNF_MEDIA_10B_2:
1431 result = detect_bnc(dev);
1432 if (result==DETECTED_NONE) {
1433 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1434 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1435 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1438 case A_CNF_MEDIA_AUTO:
1439 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1440 if (lp->adapter_cnf & A_CNF_10B_T)
1441 if ((result = detect_tp(dev)) != DETECTED_NONE)
1443 if (lp->adapter_cnf & A_CNF_AUI)
1444 if ((result = detect_aui(dev)) != DETECTED_NONE)
1446 if (lp->adapter_cnf & A_CNF_10B_2)
1447 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1449 printk(KERN_ERR "%s: no media detected\n", dev->name);
1454 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1456 case DETECTED_RJ45H:
1457 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1459 case DETECTED_RJ45F:
1460 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1463 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1466 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1470 /* Turn on both receive and transmit operations */
1471 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1473 /* Receive only error free packets addressed to this card */
1475 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1477 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1479 if (lp->isa_config & STREAM_TRANSFER)
1480 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1484 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1486 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1487 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1489 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1493 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1495 /* now that we've got our act together, enable everything */
1496 writereg(dev, PP_BusCTL, ENABLE_IRQ
1497 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1502 netif_start_queue(dev);
1504 printk("cs89x0: net_open() succeeded\n");
1510 static void net_timeout(struct net_device *dev)
1512 /* If we get here, some higher level has decided we are broken.
1513 There should really be a "kick me" function call instead. */
1514 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1515 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1516 /* Try to restart the adaptor. */
1517 netif_wake_queue(dev);
1520 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1522 struct net_local *lp = netdev_priv(dev);
1524 if (net_debug > 3) {
1525 printk("%s: sent %d byte packet of type %x\n",
1526 dev->name, skb->len,
1527 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1530 /* keep the upload from being interrupted, since we
1531 ask the chip to start transmitting before the
1532 whole packet has been completely uploaded. */
1534 spin_lock_irq(&lp->lock);
1535 netif_stop_queue(dev);
1537 /* initiate a transmit sequence */
1538 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1539 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1541 /* Test to see if the chip has allocated memory for the packet */
1542 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1544 * Gasp! It hasn't. But that shouldn't happen since
1545 * we're waiting for TxOk, so return 1 and requeue this packet.
1548 spin_unlock_irq(&lp->lock);
1549 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1552 /* Write the contents of the packet */
1553 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1554 spin_unlock_irq(&lp->lock);
1555 lp->stats.tx_bytes += skb->len;
1556 dev->trans_start = jiffies;
1557 dev_kfree_skb (skb);
1560 * We DO NOT call netif_wake_queue() here.
1561 * We also DO NOT call netif_start_queue().
1563 * Either of these would cause another bottom half run through
1564 * net_send_packet() before this packet has fully gone out. That causes
1565 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1566 * a dog. We just return and wait for the Tx completion interrupt handler
1567 * to restart the netdevice layer
1573 /* The typical workload of the driver:
1574 Handle the network interface interrupts. */
1576 static irqreturn_t net_interrupt(int irq, void *dev_id)
1578 struct net_device *dev = dev_id;
1579 struct net_local *lp;
1583 ioaddr = dev->base_addr;
1584 lp = netdev_priv(dev);
1586 /* we MUST read all the events out of the ISQ, otherwise we'll never
1587 get interrupted again. As a consequence, we can't have any limit
1588 on the number of times we loop in the interrupt handler. The
1589 hardware guarantees that eventually we'll run out of events. Of
1590 course, if you're on a slow machine, and packets are arriving
1591 faster than you can read them off, you're screwed. Hasta la
1593 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1594 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1596 switch(status & ISQ_EVENT_MASK) {
1597 case ISQ_RECEIVER_EVENT:
1598 /* Got a packet(s). */
1601 case ISQ_TRANSMITTER_EVENT:
1602 lp->stats.tx_packets++;
1603 netif_wake_queue(dev); /* Inform upper layers. */
1604 if ((status & ( TX_OK |
1608 TX_16_COL)) != TX_OK) {
1609 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1610 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1611 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1612 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1613 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1616 case ISQ_BUFFER_EVENT:
1617 if (status & READY_FOR_TX) {
1618 /* we tried to transmit a packet earlier,
1619 but inexplicably ran out of buffers.
1620 That shouldn't happen since we only ever
1621 load one packet. Shrug. Do the right
1623 netif_wake_queue(dev); /* Inform upper layers. */
1625 if (status & TX_UNDERRUN) {
1626 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1627 lp->send_underrun++;
1628 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1629 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1630 /* transmit cycle is done, although
1631 frame wasn't transmitted - this
1632 avoids having to wait for the upper
1633 layers to timeout on us, in the
1634 event of a tx underrun */
1635 netif_wake_queue(dev); /* Inform upper layers. */
1638 if (lp->use_dma && (status & RX_DMA)) {
1639 int count = readreg(dev, PP_DmaFrameCnt);
1642 printk("%s: receiving %d DMA frames\n", dev->name, count);
1643 if (net_debug > 2 && count >1)
1644 printk("%s: receiving %d DMA frames\n", dev->name, count);
1647 count = readreg(dev, PP_DmaFrameCnt);
1648 if (net_debug > 2 && count > 0)
1649 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1654 case ISQ_RX_MISS_EVENT:
1655 lp->stats.rx_missed_errors += (status >>6);
1657 case ISQ_TX_COL_EVENT:
1658 lp->stats.collisions += (status >>6);
1662 return IRQ_RETVAL(handled);
1666 count_rx_errors(int status, struct net_local *lp)
1668 lp->stats.rx_errors++;
1669 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1670 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1671 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1673 lp->stats.rx_crc_errors++;
1674 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1678 /* We have a good packet(s), get it/them out of the buffers. */
1680 net_rx(struct net_device *dev)
1682 struct net_local *lp = netdev_priv(dev);
1683 struct sk_buff *skb;
1686 int ioaddr = dev->base_addr;
1687 status = readword(ioaddr, RX_FRAME_PORT);
1688 length = readword(ioaddr, RX_FRAME_PORT);
1690 if ((status & RX_OK) == 0) {
1691 count_rx_errors(status, lp);
1695 /* Malloc up new buffer. */
1696 skb = dev_alloc_skb(length + 2);
1698 #if 0 /* Again, this seems a cruel thing to do */
1699 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1701 lp->stats.rx_dropped++;
1704 skb_reserve(skb, 2); /* longword align L3 header */
1706 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1708 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1710 if (net_debug > 3) {
1711 printk( "%s: received %d byte packet of type %x\n",
1713 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1716 skb->protocol=eth_type_trans(skb,dev);
1718 dev->last_rx = jiffies;
1719 lp->stats.rx_packets++;
1720 lp->stats.rx_bytes += length;
1724 static void release_dma_buff(struct net_local *lp)
1727 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1728 lp->dma_buff = NULL;
1733 /* The inverse routine to net_open(). */
1735 net_close(struct net_device *dev)
1738 struct net_local *lp = netdev_priv(dev);
1741 netif_stop_queue(dev);
1743 writereg(dev, PP_RxCFG, 0);
1744 writereg(dev, PP_TxCFG, 0);
1745 writereg(dev, PP_BufCFG, 0);
1746 writereg(dev, PP_BusCTL, 0);
1748 free_irq(dev->irq, dev);
1751 if (lp->use_dma && lp->dma) {
1753 release_dma_buff(lp);
1757 /* Update the statistics here. */
1761 /* Get the current statistics. This may be called with the card open or
1763 static struct net_device_stats *
1764 net_get_stats(struct net_device *dev)
1766 struct net_local *lp = netdev_priv(dev);
1767 unsigned long flags;
1769 spin_lock_irqsave(&lp->lock, flags);
1770 /* Update the statistics from the device registers. */
1771 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1772 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1773 spin_unlock_irqrestore(&lp->lock, flags);
1778 static void set_multicast_list(struct net_device *dev)
1780 struct net_local *lp = netdev_priv(dev);
1781 unsigned long flags;
1783 spin_lock_irqsave(&lp->lock, flags);
1784 if(dev->flags&IFF_PROMISC)
1786 lp->rx_mode = RX_ALL_ACCEPT;
1788 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1790 /* The multicast-accept list is initialized to accept-all, and we
1791 rely on higher-level filtering for now. */
1792 lp->rx_mode = RX_MULTCAST_ACCEPT;
1797 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1799 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1800 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1801 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1802 spin_unlock_irqrestore(&lp->lock, flags);
1806 static int set_mac_address(struct net_device *dev, void *p)
1809 struct sockaddr *addr = p;
1811 if (netif_running(dev))
1814 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1817 DECLARE_MAC_BUF(mac);
1818 printk("%s: Setting MAC address to %s.\n",
1819 dev->name, print_mac(mac, dev->dev_addr));
1821 /* set the Ethernet address */
1822 for (i=0; i < ETH_ALEN/2; i++)
1823 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1830 static struct net_device *dev_cs89x0;
1833 * Support the 'debug' module parm even if we're compiled for non-debug to
1834 * avoid breaking someone's startup scripts
1840 static char media[8];
1841 static int duplex=-1;
1843 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1845 static int dmasize=16; /* or 64 */
1847 module_param(io, int, 0);
1848 module_param(irq, int, 0);
1849 module_param(debug, int, 0);
1850 module_param_string(media, media, sizeof(media), 0);
1851 module_param(duplex, int, 0);
1852 module_param(dma , int, 0);
1853 module_param(dmasize , int, 0);
1854 module_param(use_dma , int, 0);
1855 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1856 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1858 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1860 MODULE_PARM_DESC(debug, "(ignored)");
1862 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1863 /* No other value than -1 for duplex seems to be currently interpreted */
1864 MODULE_PARM_DESC(duplex, "(ignored)");
1866 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1867 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1868 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1870 MODULE_PARM_DESC(dma , "(ignored)");
1871 MODULE_PARM_DESC(dmasize , "(ignored)");
1872 MODULE_PARM_DESC(use_dma , "(ignored)");
1875 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton");
1876 MODULE_LICENSE("GPL");
1880 * media=t - specify media type
1884 * duplex=0 - specify forced half/full/autonegotiate duplex
1885 * debug=# - debug level
1888 * Default Chip Configuration:
1889 * DMA Burst = enabled
1890 * IOCHRDY Enabled = enabled
1892 * CS8900 defaults to half-duplex if not specified on command-line
1893 * CS8920 defaults to autoneg if not specified on command-line
1894 * Use reset defaults for other config parameters
1897 * media type specified is supported (circuitry is present)
1898 * if memory address is > 1MB, then required mem decode hw is present
1899 * if 10B-2, then agent other than driver will enable DC/DC converter
1900 (hw or software util)
1905 int __init init_module(void)
1907 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1908 struct net_local *lp;
1920 dev->base_addr = io;
1921 lp = netdev_priv(dev);
1925 lp->use_dma = use_dma;
1927 lp->dmasize = dmasize;
1931 spin_lock_init(&lp->lock);
1933 /* boy, they'd better get these right */
1934 if (!strcmp(media, "rj45"))
1935 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1936 else if (!strcmp(media, "aui"))
1937 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1938 else if (!strcmp(media, "bnc"))
1939 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1941 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1944 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1947 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1948 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1951 } else if (io <= 0x1ff) {
1957 if (use_dma && dmasize != 16 && dmasize != 64) {
1958 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1963 ret = cs89x0_probe1(dev, io, 1);
1975 cleanup_module(void)
1977 unregister_netdev(dev_cs89x0);
1978 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1979 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1980 free_netdev(dev_cs89x0);
1986 * version-control: t
1987 * kept-new-versions: 5