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 static const struct net_device_ops net_ops = {
505 .ndo_open = net_open,
506 .ndo_stop = net_close,
507 .ndo_tx_timeout = net_timeout,
508 .ndo_start_xmit = net_send_packet,
509 .ndo_get_stats = net_get_stats,
510 .ndo_set_multicast_list = set_multicast_list,
511 .ndo_set_mac_address = set_mac_address,
512 #ifdef CONFIG_NET_POLL_CONTROLLER
513 .ndo_poll_controller = net_poll_controller,
515 .ndo_change_mtu = eth_change_mtu,
516 .ndo_validate_addr = eth_validate_addr,
519 /* This is the real probe routine. Linux has a history of friendly device
520 probes on the ISA bus. A good device probes avoids doing writes, and
521 verifies that the correct device exists and functions.
526 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
528 struct net_local *lp = netdev_priv(dev);
529 static unsigned version_printed;
532 unsigned rev_type = 0;
533 int eeprom_buff[CHKSUM_LEN];
536 /* Initialize the device structure. */
538 memset(lp, 0, sizeof(*lp));
539 spin_lock_init(&lp->lock);
544 lp->dma = g_cs89x0_dma;
545 lp->dmasize = 16; /* Could make this an option... */
548 lp->force = g_cs89x0_media__force;
552 #ifdef CONFIG_ARCH_PNX010X
555 /* Map GPIO registers for the pins connected to the CS8900a. */
556 if (map_cirrus_gpio() < 0)
561 /* Map event-router registers. */
562 if (map_event_router() < 0)
568 unmap_event_router();
570 dev->base_addr = ioaddr;
572 for (i = 0 ; i < 3 ; i++)
576 /* Grab the region so we can find another board if autoIRQ fails. */
577 /* WTF is going on here? */
578 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
579 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
580 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
585 #ifdef CONFIG_SH_HICOSH4
586 /* truely reset the chip */
587 writeword(ioaddr, ADD_PORT, 0x0114);
588 writeword(ioaddr, DATA_PORT, 0x0040);
591 /* if they give us an odd I/O address, then do ONE write to
592 the address port, to get it back to address zero, where we
593 expect to find the EISA signature word. An IO with a base of 0x3
594 will skip the test for the ADD_PORT. */
597 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
598 if ((ioaddr & 2) != 2)
599 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
600 printk(KERN_ERR "%s: bad signature 0x%x\n",
601 dev->name, readword(ioaddr & ~3, ADD_PORT));
608 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
609 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
610 writeword(ioaddr, ADD_PORT, PP_ChipID);
612 tmp = readword(ioaddr, DATA_PORT);
613 if (tmp != CHIP_EISA_ID_SIG) {
614 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
615 CHIP_EISA_ID_SIG_STR "\n",
616 dev->name, ioaddr, DATA_PORT, tmp);
621 /* Fill in the 'dev' fields. */
622 dev->base_addr = ioaddr;
624 /* get the chip type */
625 rev_type = readreg(dev, PRODUCT_ID_ADD);
626 lp->chip_type = rev_type &~ REVISON_BITS;
627 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
629 /* Check the chip type and revision in order to set the correct send command
630 CS8920 revision C and CS8900 revision F can use the faster send. */
631 lp->send_cmd = TX_AFTER_381;
632 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
633 lp->send_cmd = TX_NOW;
634 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
635 lp->send_cmd = TX_NOW;
637 if (net_debug && version_printed++ == 0)
640 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
642 lp->chip_type==CS8900?'0':'2',
643 lp->chip_type==CS8920M?"M":"",
649 /* Here we read the current configuration of the chip. If there
650 is no Extended EEPROM then the idea is to not disturb the chip
651 configuration, it should have been correctly setup by automatic
652 EEPROM read on reset. So, if the chip says it read the EEPROM
653 the driver will always do *something* instead of complain that
656 #ifdef CONFIG_SH_HICOSH4
658 /* For the HiCO.SH4 board, things are different: we don't
659 have EEPROM, but there is some data in flash, so we go
660 get it there directly (MAC). */
663 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
665 confd = (__u16*) 0xa0013fc0;
667 confd = (__u16*) 0xa001ffc0;
669 cnt = (*confd++ & 0x00ff) >> 1;
673 switch (j & 0x0fff) {
675 for (i = 0; i < ETH_ALEN/2; i++) {
676 dev->dev_addr[i*2] = confd[i] & 0xFF;
677 dev->dev_addr[i*2+1] = confd[i] >> 8;
688 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
689 (EEPROM_OK|EEPROM_PRESENT)) {
691 for (i=0; i < ETH_ALEN/2; i++) {
693 Addr = readreg(dev, PP_IA+i*2);
694 dev->dev_addr[i*2] = Addr & 0xFF;
695 dev->dev_addr[i*2+1] = Addr >> 8;
698 /* Load the Adapter Configuration.
699 Note: Barring any more specific information from some
700 other source (ie EEPROM+Schematics), we would not know
701 how to operate a 10Base2 interface on the AUI port.
702 However, since we do read the status of HCB1 and use
703 settings that always result in calls to control_dc_dc(dev,0)
704 a BNC interface should work if the enable pin
705 (dc/dc converter) is on HCB1. It will be called AUI
709 i = readreg(dev, PP_LineCTL);
710 /* Preserve the setting of the HCB1 pin. */
711 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
712 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
713 /* Save the sqelch bit */
714 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
715 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
716 /* Check if the card is in 10Base-t only mode */
717 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
718 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
719 /* Check if the card is in AUI only mode */
720 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
721 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
722 /* Check if the card is in Auto mode. */
723 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
724 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
725 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
728 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
729 dev->name, i, lp->adapter_cnf);
731 /* IRQ. Other chips already probe, see below. */
732 if (lp->chip_type == CS8900)
733 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
735 printk( "[Cirrus EEPROM] ");
740 /* First check to see if an EEPROM is attached. */
741 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
743 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
746 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
747 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
748 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
749 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
750 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
751 /* Check if the chip was able to read its own configuration starting
753 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
754 (EEPROM_OK|EEPROM_PRESENT))
755 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
758 /* This reads an extended EEPROM that is not documented
759 in the CS8900 datasheet. */
761 /* get transmission control word but keep the autonegotiation bits */
762 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
763 /* Store adapter configuration */
764 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
765 /* Store ISA configuration */
766 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
767 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
769 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
770 /* store the initial memory base address */
771 for (i = 0; i < ETH_ALEN/2; i++) {
772 dev->dev_addr[i*2] = eeprom_buff[i];
773 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
776 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
777 dev->name, lp->adapter_cnf);
780 /* allow them to force multiple transceivers. If they force multiple, autosense */
783 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
784 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
785 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
786 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
787 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
788 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
789 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
793 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
794 dev->name, lp->force, lp->adapter_cnf);
796 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
798 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
800 /* FIXME: we don't set the Ethernet address on the command line. Use
801 ifconfig IFACE hw ether AABBCCDDEEFF */
803 printk(KERN_INFO "cs89x0 media %s%s%s",
804 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
805 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
806 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
808 lp->irq_map = 0xffff;
810 /* If this is a CS8900 then no pnp soft */
811 if (lp->chip_type != CS8900 &&
812 /* Check if the ISA IRQ has been set */
813 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
814 (i != 0 && i < CS8920_NO_INTS))) {
818 i = lp->isa_config & INT_NO_MASK;
819 if (lp->chip_type == CS8900) {
820 #ifdef CONFIG_CS89x0_NONISA_IRQ
821 i = cs8900_irq_map[0];
823 /* Translate the IRQ using the IRQ mapping table. */
824 if (i >= ARRAY_SIZE(cs8900_irq_map))
825 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
827 i = cs8900_irq_map[i];
829 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
831 int irq_map_buff[IRQ_MAP_LEN/2];
833 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
835 irq_map_buff) >= 0) {
836 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
837 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
845 printk(" IRQ %d", dev->irq);
849 get_dma_channel(dev);
850 printk(", DMA %d", dev->dma);
855 printk(", programmed I/O");
858 /* print the ethernet address. */
859 printk(", MAC %pM", dev->dev_addr);
861 dev->netdev_ops = &net_ops;
862 dev->watchdog_timeo = HZ;
866 printk("cs89x0_probe1() successful\n");
868 retval = register_netdev(dev);
873 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
875 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
881 /*********************************
882 * This page contains DMA routines
883 **********************************/
887 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
890 get_dma_channel(struct net_device *dev)
892 struct net_local *lp = netdev_priv(dev);
896 lp->isa_config |= ISA_RxDMA;
898 if ((lp->isa_config & ANY_ISA_DMA) == 0)
900 dev->dma = lp->isa_config & DMA_NO_MASK;
901 if (lp->chip_type == CS8900)
903 if (dev->dma < 5 || dev->dma > 7) {
904 lp->isa_config &= ~ANY_ISA_DMA;
912 write_dma(struct net_device *dev, int chip_type, int dma)
914 struct net_local *lp = netdev_priv(dev);
915 if ((lp->isa_config & ANY_ISA_DMA) == 0)
917 if (chip_type == CS8900) {
918 writereg(dev, PP_CS8900_ISADMA, dma-5);
920 writereg(dev, PP_CS8920_ISADMA, dma);
925 set_dma_cfg(struct net_device *dev)
927 struct net_local *lp = netdev_priv(dev);
930 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
932 printk("set_dma_cfg(): no DMA\n");
935 if (lp->isa_config & ISA_RxDMA) {
936 lp->curr_rx_cfg |= RX_DMA_ONLY;
938 printk("set_dma_cfg(): RX_DMA_ONLY\n");
940 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
942 printk("set_dma_cfg(): AUTO_RX_DMA\n");
948 dma_bufcfg(struct net_device *dev)
950 struct net_local *lp = netdev_priv(dev);
952 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
958 dma_busctl(struct net_device *dev)
961 struct net_local *lp = netdev_priv(dev);
963 if (lp->isa_config & ANY_ISA_DMA)
964 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
965 if (lp->isa_config & DMA_BURST)
966 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
967 if (lp->dmasize == 64)
968 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
969 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
975 dma_rx(struct net_device *dev)
977 struct net_local *lp = netdev_priv(dev);
980 unsigned char *bp = lp->rx_dma_ptr;
982 status = bp[0] + (bp[1]<<8);
983 length = bp[2] + (bp[3]<<8);
986 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
987 dev->name, (unsigned long)bp, status, length);
989 if ((status & RX_OK) == 0) {
990 count_rx_errors(status, lp);
991 goto skip_this_frame;
994 /* Malloc up new buffer. */
995 skb = dev_alloc_skb(length + 2);
997 if (net_debug) /* I don't think we want to do this to a stressed system */
998 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
999 lp->stats.rx_dropped++;
1001 /* AKPM: advance bp to the next frame */
1003 bp += (length + 3) & ~3;
1004 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1005 lp->rx_dma_ptr = bp;
1008 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 lp->stats.rx_packets++;
1030 lp->stats.rx_bytes += length;
1033 #endif /* ALLOW_DMA */
1035 static void __init reset_chip(struct net_device *dev)
1037 #if !defined(CONFIG_MACH_MX31ADS)
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)
1066 #endif /* !CONFIG_MACH_MX31ADS */
1071 control_dc_dc(struct net_device *dev, int on_not_off)
1073 struct net_local *lp = netdev_priv(dev);
1074 unsigned int selfcontrol;
1075 int timenow = jiffies;
1076 /* control the DC to DC convertor in the SelfControl register.
1077 Note: This is hooked up to a general purpose pin, might not
1078 always be a DC to DC convertor. */
1080 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1081 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1082 selfcontrol |= HCB1;
1084 selfcontrol &= ~HCB1;
1085 writereg(dev, PP_SelfCTL, selfcontrol);
1087 /* Wait for the DC/DC converter to power up - 500ms */
1088 while (jiffies - timenow < HZ)
1092 #define DETECTED_NONE 0
1093 #define DETECTED_RJ45H 1
1094 #define DETECTED_RJ45F 2
1095 #define DETECTED_AUI 3
1096 #define DETECTED_BNC 4
1099 detect_tp(struct net_device *dev)
1101 struct net_local *lp = netdev_priv(dev);
1102 int timenow = jiffies;
1105 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1107 /* If connected to another full duplex capable 10-Base-T card the link pulses
1108 seem to be lost when the auto detect bit in the LineCTL is set.
1109 To overcome this the auto detect bit will be cleared whilst testing the
1110 10-Base-T interface. This would not be necessary for the sparrow chip but
1111 is simpler to do it anyway. */
1112 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1113 control_dc_dc(dev, 0);
1115 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1116 for (timenow = jiffies; jiffies - timenow < 15; )
1118 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1119 return DETECTED_NONE;
1121 if (lp->chip_type == CS8900) {
1122 switch (lp->force & 0xf0) {
1125 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1126 return DETECTED_NONE;
1128 /* CS8900 doesn't support AUTO, change to HALF*/
1130 lp->force &= ~FORCE_AUTO;
1131 lp->force |= FORCE_HALF;
1136 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1139 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1141 switch (lp->force & 0xf0) {
1143 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1146 lp->auto_neg_cnf = 0;
1149 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1153 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1155 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1156 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1157 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1158 if (jiffies - timenow > 4000) {
1159 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1164 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1167 return DETECTED_RJ45F;
1169 return DETECTED_RJ45H;
1172 /* send a test packet - return true if carrier bits are ok */
1174 send_test_pkt(struct net_device *dev)
1176 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1177 0, 46, /* A 46 in network order */
1178 0, 0, /* DSAP=0 & SSAP=0 fields */
1179 0xf3, 0 /* Control (Test Req + P bit set) */ };
1180 long timenow = jiffies;
1182 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1184 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1185 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1187 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1188 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1190 /* Test to see if the chip has allocated memory for the packet */
1191 while (jiffies - timenow < 5)
1192 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1194 if (jiffies - timenow >= 5)
1195 return 0; /* this shouldn't happen */
1197 /* Write the contents of the packet */
1198 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1200 if (net_debug > 1) printk("Sending test packet ");
1201 /* wait a couple of jiffies for packet to be received */
1202 for (timenow = jiffies; jiffies - timenow < 3; )
1204 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1205 if (net_debug > 1) printk("succeeded\n");
1208 if (net_debug > 1) printk("failed\n");
1214 detect_aui(struct net_device *dev)
1216 struct net_local *lp = netdev_priv(dev);
1218 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1219 control_dc_dc(dev, 0);
1221 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1223 if (send_test_pkt(dev))
1224 return DETECTED_AUI;
1226 return DETECTED_NONE;
1230 detect_bnc(struct net_device *dev)
1232 struct net_local *lp = netdev_priv(dev);
1234 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1235 control_dc_dc(dev, 1);
1237 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1239 if (send_test_pkt(dev))
1240 return DETECTED_BNC;
1242 return DETECTED_NONE;
1247 write_irq(struct net_device *dev, int chip_type, int irq)
1251 if (chip_type == CS8900) {
1252 /* Search the mapping table for the corresponding IRQ pin. */
1253 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1254 if (cs8900_irq_map[i] == irq)
1257 if (i == ARRAY_SIZE(cs8900_irq_map))
1259 writereg(dev, PP_CS8900_ISAINT, i);
1261 writereg(dev, PP_CS8920_ISAINT, irq);
1265 /* Open/initialize the board. This is called (in the current kernel)
1266 sometime after booting when the 'ifconfig' program is run.
1268 This routine should set everything up anew at each open, even
1269 registers that "should" only need to be set once at boot, so that
1270 there is non-reboot way to recover if something goes wrong.
1273 /* AKPM: do we need to do any locking here? */
1276 net_open(struct net_device *dev)
1278 struct net_local *lp = netdev_priv(dev);
1283 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1285 /* Allow interrupts to be generated by the chip */
1286 /* Cirrus' release had this: */
1288 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1290 /* And 2.3.47 had this: */
1291 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1293 for (i = 2; i < CS8920_NO_INTS; i++) {
1294 if ((1 << i) & lp->irq_map) {
1295 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1297 write_irq(dev, lp->chip_type, i);
1298 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1304 if (i >= CS8920_NO_INTS) {
1305 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1306 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1314 #ifndef CONFIG_CS89x0_NONISA_IRQ
1315 if (((1 << dev->irq) & lp->irq_map) == 0) {
1316 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1317 dev->name, dev->irq, lp->irq_map);
1322 /* FIXME: Cirrus' release had this: */
1323 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1324 /* And 2.3.47 had this: */
1326 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1328 write_irq(dev, lp->chip_type, dev->irq);
1329 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1332 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1339 if (lp->isa_config & ANY_ISA_DMA) {
1340 unsigned long flags;
1341 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1342 get_order(lp->dmasize * 1024));
1344 if (!lp->dma_buff) {
1345 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1348 if (net_debug > 1) {
1349 printk( "%s: dma %lx %lx\n",
1351 (unsigned long)lp->dma_buff,
1352 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1354 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1355 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1356 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1359 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1360 if (request_dma(dev->dma, dev->name)) {
1361 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1364 write_dma(dev, lp->chip_type, dev->dma);
1365 lp->rx_dma_ptr = lp->dma_buff;
1366 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1367 spin_lock_irqsave(&lp->lock, flags);
1368 disable_dma(dev->dma);
1369 clear_dma_ff(dev->dma);
1370 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1371 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1372 set_dma_count(dev->dma, lp->dmasize*1024);
1373 enable_dma(dev->dma);
1374 spin_unlock_irqrestore(&lp->lock, flags);
1377 #endif /* ALLOW_DMA */
1379 /* set the Ethernet address */
1380 for (i=0; i < ETH_ALEN/2; i++)
1381 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1383 /* while we're testing the interface, leave interrupts disabled */
1384 writereg(dev, PP_BusCTL, MEMORY_ON);
1386 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1387 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1388 lp->linectl = LOW_RX_SQUELCH;
1392 /* check to make sure that they have the "right" hardware available */
1393 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1394 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1395 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1396 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1397 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1399 #ifdef CONFIG_ARCH_PNX010X
1400 result = A_CNF_10B_T;
1403 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1408 release_dma_buff(lp);
1410 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1411 free_irq(dev->irq, dev);
1416 /* set the hardware to the configured choice */
1417 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1418 case A_CNF_MEDIA_10B_T:
1419 result = detect_tp(dev);
1420 if (result==DETECTED_NONE) {
1421 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1422 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1423 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1426 case A_CNF_MEDIA_AUI:
1427 result = detect_aui(dev);
1428 if (result==DETECTED_NONE) {
1429 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1430 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1431 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1434 case A_CNF_MEDIA_10B_2:
1435 result = detect_bnc(dev);
1436 if (result==DETECTED_NONE) {
1437 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1438 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1439 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1442 case A_CNF_MEDIA_AUTO:
1443 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1444 if (lp->adapter_cnf & A_CNF_10B_T)
1445 if ((result = detect_tp(dev)) != DETECTED_NONE)
1447 if (lp->adapter_cnf & A_CNF_AUI)
1448 if ((result = detect_aui(dev)) != DETECTED_NONE)
1450 if (lp->adapter_cnf & A_CNF_10B_2)
1451 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1453 printk(KERN_ERR "%s: no media detected\n", dev->name);
1458 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1460 case DETECTED_RJ45H:
1461 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1463 case DETECTED_RJ45F:
1464 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1467 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1470 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1474 /* Turn on both receive and transmit operations */
1475 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1477 /* Receive only error free packets addressed to this card */
1479 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1481 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1483 if (lp->isa_config & STREAM_TRANSFER)
1484 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1488 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1490 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1491 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1493 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1497 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1499 /* now that we've got our act together, enable everything */
1500 writereg(dev, PP_BusCTL, ENABLE_IRQ
1501 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1506 netif_start_queue(dev);
1508 printk("cs89x0: net_open() succeeded\n");
1514 static void net_timeout(struct net_device *dev)
1516 /* If we get here, some higher level has decided we are broken.
1517 There should really be a "kick me" function call instead. */
1518 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1519 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1520 /* Try to restart the adaptor. */
1521 netif_wake_queue(dev);
1524 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1526 struct net_local *lp = netdev_priv(dev);
1528 if (net_debug > 3) {
1529 printk("%s: sent %d byte packet of type %x\n",
1530 dev->name, skb->len,
1531 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1534 /* keep the upload from being interrupted, since we
1535 ask the chip to start transmitting before the
1536 whole packet has been completely uploaded. */
1538 spin_lock_irq(&lp->lock);
1539 netif_stop_queue(dev);
1541 /* initiate a transmit sequence */
1542 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1543 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1545 /* Test to see if the chip has allocated memory for the packet */
1546 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1548 * Gasp! It hasn't. But that shouldn't happen since
1549 * we're waiting for TxOk, so return 1 and requeue this packet.
1552 spin_unlock_irq(&lp->lock);
1553 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1554 return NETDEV_TX_BUSY;
1556 /* Write the contents of the packet */
1557 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1558 spin_unlock_irq(&lp->lock);
1559 lp->stats.tx_bytes += skb->len;
1560 dev->trans_start = jiffies;
1561 dev_kfree_skb (skb);
1564 * We DO NOT call netif_wake_queue() here.
1565 * We also DO NOT call netif_start_queue().
1567 * Either of these would cause another bottom half run through
1568 * net_send_packet() before this packet has fully gone out. That causes
1569 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1570 * a dog. We just return and wait for the Tx completion interrupt handler
1571 * to restart the netdevice layer
1577 /* The typical workload of the driver:
1578 Handle the network interface interrupts. */
1580 static irqreturn_t net_interrupt(int irq, void *dev_id)
1582 struct net_device *dev = dev_id;
1583 struct net_local *lp;
1587 ioaddr = dev->base_addr;
1588 lp = netdev_priv(dev);
1590 /* we MUST read all the events out of the ISQ, otherwise we'll never
1591 get interrupted again. As a consequence, we can't have any limit
1592 on the number of times we loop in the interrupt handler. The
1593 hardware guarantees that eventually we'll run out of events. Of
1594 course, if you're on a slow machine, and packets are arriving
1595 faster than you can read them off, you're screwed. Hasta la
1597 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1598 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1600 switch(status & ISQ_EVENT_MASK) {
1601 case ISQ_RECEIVER_EVENT:
1602 /* Got a packet(s). */
1605 case ISQ_TRANSMITTER_EVENT:
1606 lp->stats.tx_packets++;
1607 netif_wake_queue(dev); /* Inform upper layers. */
1608 if ((status & ( TX_OK |
1612 TX_16_COL)) != TX_OK) {
1613 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1614 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1615 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1616 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1617 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1620 case ISQ_BUFFER_EVENT:
1621 if (status & READY_FOR_TX) {
1622 /* we tried to transmit a packet earlier,
1623 but inexplicably ran out of buffers.
1624 That shouldn't happen since we only ever
1625 load one packet. Shrug. Do the right
1627 netif_wake_queue(dev); /* Inform upper layers. */
1629 if (status & TX_UNDERRUN) {
1630 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1631 lp->send_underrun++;
1632 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1633 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1634 /* transmit cycle is done, although
1635 frame wasn't transmitted - this
1636 avoids having to wait for the upper
1637 layers to timeout on us, in the
1638 event of a tx underrun */
1639 netif_wake_queue(dev); /* Inform upper layers. */
1642 if (lp->use_dma && (status & RX_DMA)) {
1643 int count = readreg(dev, PP_DmaFrameCnt);
1646 printk("%s: receiving %d DMA frames\n", dev->name, count);
1647 if (net_debug > 2 && count >1)
1648 printk("%s: receiving %d DMA frames\n", dev->name, count);
1651 count = readreg(dev, PP_DmaFrameCnt);
1652 if (net_debug > 2 && count > 0)
1653 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1658 case ISQ_RX_MISS_EVENT:
1659 lp->stats.rx_missed_errors += (status >>6);
1661 case ISQ_TX_COL_EVENT:
1662 lp->stats.collisions += (status >>6);
1666 return IRQ_RETVAL(handled);
1670 count_rx_errors(int status, struct net_local *lp)
1672 lp->stats.rx_errors++;
1673 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1674 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1675 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1677 lp->stats.rx_crc_errors++;
1678 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1682 /* We have a good packet(s), get it/them out of the buffers. */
1684 net_rx(struct net_device *dev)
1686 struct net_local *lp = netdev_priv(dev);
1687 struct sk_buff *skb;
1690 int ioaddr = dev->base_addr;
1691 status = readword(ioaddr, RX_FRAME_PORT);
1692 length = readword(ioaddr, RX_FRAME_PORT);
1694 if ((status & RX_OK) == 0) {
1695 count_rx_errors(status, lp);
1699 /* Malloc up new buffer. */
1700 skb = dev_alloc_skb(length + 2);
1702 #if 0 /* Again, this seems a cruel thing to do */
1703 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1705 lp->stats.rx_dropped++;
1708 skb_reserve(skb, 2); /* longword align L3 header */
1710 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1712 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1714 if (net_debug > 3) {
1715 printk( "%s: received %d byte packet of type %x\n",
1717 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1720 skb->protocol=eth_type_trans(skb,dev);
1722 lp->stats.rx_packets++;
1723 lp->stats.rx_bytes += length;
1727 static void release_dma_buff(struct net_local *lp)
1730 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1731 lp->dma_buff = NULL;
1736 /* The inverse routine to net_open(). */
1738 net_close(struct net_device *dev)
1741 struct net_local *lp = netdev_priv(dev);
1744 netif_stop_queue(dev);
1746 writereg(dev, PP_RxCFG, 0);
1747 writereg(dev, PP_TxCFG, 0);
1748 writereg(dev, PP_BufCFG, 0);
1749 writereg(dev, PP_BusCTL, 0);
1751 free_irq(dev->irq, dev);
1754 if (lp->use_dma && lp->dma) {
1756 release_dma_buff(lp);
1760 /* Update the statistics here. */
1764 /* Get the current statistics. This may be called with the card open or
1766 static struct net_device_stats *
1767 net_get_stats(struct net_device *dev)
1769 struct net_local *lp = netdev_priv(dev);
1770 unsigned long flags;
1772 spin_lock_irqsave(&lp->lock, flags);
1773 /* Update the statistics from the device registers. */
1774 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1775 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1776 spin_unlock_irqrestore(&lp->lock, flags);
1781 static void set_multicast_list(struct net_device *dev)
1783 struct net_local *lp = netdev_priv(dev);
1784 unsigned long flags;
1786 spin_lock_irqsave(&lp->lock, flags);
1787 if(dev->flags&IFF_PROMISC)
1789 lp->rx_mode = RX_ALL_ACCEPT;
1791 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1793 /* The multicast-accept list is initialized to accept-all, and we
1794 rely on higher-level filtering for now. */
1795 lp->rx_mode = RX_MULTCAST_ACCEPT;
1800 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1802 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1803 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1804 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1805 spin_unlock_irqrestore(&lp->lock, flags);
1809 static int set_mac_address(struct net_device *dev, void *p)
1812 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 %pM.\n",
1821 dev->name, dev->dev_addr);
1823 /* set the Ethernet address */
1824 for (i=0; i < ETH_ALEN/2; i++)
1825 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1832 static struct net_device *dev_cs89x0;
1835 * Support the 'debug' module parm even if we're compiled for non-debug to
1836 * avoid breaking someone's startup scripts
1842 static char media[8];
1843 static int duplex=-1;
1845 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1847 static int dmasize=16; /* or 64 */
1849 module_param(io, int, 0);
1850 module_param(irq, int, 0);
1851 module_param(debug, int, 0);
1852 module_param_string(media, media, sizeof(media), 0);
1853 module_param(duplex, int, 0);
1854 module_param(dma , int, 0);
1855 module_param(dmasize , int, 0);
1856 module_param(use_dma , int, 0);
1857 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1858 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1860 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1862 MODULE_PARM_DESC(debug, "(ignored)");
1864 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1865 /* No other value than -1 for duplex seems to be currently interpreted */
1866 MODULE_PARM_DESC(duplex, "(ignored)");
1868 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1869 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1870 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1872 MODULE_PARM_DESC(dma , "(ignored)");
1873 MODULE_PARM_DESC(dmasize , "(ignored)");
1874 MODULE_PARM_DESC(use_dma , "(ignored)");
1877 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton");
1878 MODULE_LICENSE("GPL");
1882 * media=t - specify media type
1886 * duplex=0 - specify forced half/full/autonegotiate duplex
1887 * debug=# - debug level
1890 * Default Chip Configuration:
1891 * DMA Burst = enabled
1892 * IOCHRDY Enabled = enabled
1894 * CS8900 defaults to half-duplex if not specified on command-line
1895 * CS8920 defaults to autoneg if not specified on command-line
1896 * Use reset defaults for other config parameters
1899 * media type specified is supported (circuitry is present)
1900 * if memory address is > 1MB, then required mem decode hw is present
1901 * if 10B-2, then agent other than driver will enable DC/DC converter
1902 (hw or software util)
1907 int __init init_module(void)
1909 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1910 struct net_local *lp;
1922 dev->base_addr = io;
1923 lp = netdev_priv(dev);
1927 lp->use_dma = use_dma;
1929 lp->dmasize = dmasize;
1933 spin_lock_init(&lp->lock);
1935 /* boy, they'd better get these right */
1936 if (!strcmp(media, "rj45"))
1937 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1938 else if (!strcmp(media, "aui"))
1939 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1940 else if (!strcmp(media, "bnc"))
1941 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1943 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1946 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1949 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1950 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1953 } else if (io <= 0x1ff) {
1959 if (use_dma && dmasize != 16 && dmasize != 64) {
1960 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1965 ret = cs89x0_probe1(dev, io, 1);
1977 cleanup_module(void)
1979 unregister_netdev(dev_cs89x0);
1980 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1981 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1982 free_netdev(dev_cs89x0);
1988 * version-control: t
1989 * kept-new-versions: 5