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.
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
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.
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
41 : Handle kmalloc() failures
42 : Other resource allocation fixes
44 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
45 : If ALLOW_DMA is true, make DMA runtime selectable
46 : Folded in changes from Cirrus (Melody Lee
48 : Don't call netif_wake_queue() in net_send_packet()
49 : Fixed an out-of-mem bug in dma_rx()
50 : Updated Documentation/networking/cs89x0.txt
53 : Use skb_reserve to longword align IP header (two places)
54 : Remove a delay loop from dma_rx()
55 : Replace '100' with HZ
56 : Clean up a couple of skb API abuses
57 : Added 'cs89x0_dma=N' kernel boot option
58 : Correctly initialise lp->lock in non-module compile
61 : MOD_INC/DEC race fix (see
62 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
65 : Enhanced EEPROM support to cover more devices,
66 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
69 Andrew Morton : Kernel 2.4.0-test11-pre4
70 : Use dev->name in request_*() (Andrey Panin)
71 : Fix an error-path memleak in init_module()
72 : Preserve return value from request_irq()
73 : Fix type of `media' module parm (Keith Owens)
74 : Use SET_MODULE_OWNER()
75 : Tidied up strange request_irq() abuse in net_open().
77 Andrew Morton : Kernel 2.4.3-pre1
78 : Request correct number of pages for DMA (Hugh Dickens)
79 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
80 : because unregister_netdev() calls get_stats.
81 : Make `version[]' __initdata
82 : Uninlined the read/write reg/word functions.
85 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
88 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
91 : PNX010X platform support
94 : Intel IXDP2351 platform support
98 /* Always include 'config.h' first in case the user wants to turn on
99 or override something. */
100 #include <linux/config.h>
101 #include <linux/module.h>
104 * Set this to zero to disable DMA code
106 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
107 * module options so we don't break any startup scripts.
109 #ifndef CONFIG_ISA_DMA_API
116 * Set this to zero to remove all the debug statements via
117 * dead code elimination
124 Crynwr packet driver epktisa.
126 Crystal Semiconductor data sheets.
130 #include <linux/errno.h>
131 #include <linux/netdevice.h>
132 #include <linux/etherdevice.h>
133 #include <linux/kernel.h>
134 #include <linux/types.h>
135 #include <linux/fcntl.h>
136 #include <linux/interrupt.h>
137 #include <linux/ioport.h>
138 #include <linux/in.h>
139 #include <linux/skbuff.h>
140 #include <linux/slab.h>
141 #include <linux/spinlock.h>
142 #include <linux/string.h>
143 #include <linux/init.h>
144 #include <linux/bitops.h>
145 #include <linux/delay.h>
147 #include <asm/system.h>
156 static char version[] __initdata =
159 #define DRV_NAME "cs89x0"
161 /* First, a few definitions that the brave might change.
162 A zero-terminated list of I/O addresses to be probed. Some special flags..
163 Addr & 1 = Read back the address port, look for signature and reset
164 the page window before probing
165 Addr & 3 = Reset the page window and probe
166 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
167 but it is possible that a Cirrus board could be plugged into the ISA
169 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
170 them to system IRQ numbers. This mapping is card specific and is set to
171 the configuration of the Cirrus Eval board for this chip. */
172 #ifdef CONFIG_ARCH_CLPS7500
173 static unsigned int netcard_portlist[] __initdata =
174 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
175 static unsigned int cs8900_irq_map[] = {12,0,0,0};
176 #elif defined(CONFIG_SH_HICOSH4)
177 static unsigned int netcard_portlist[] __initdata =
179 static unsigned int cs8900_irq_map[] = {1,0,0,0};
180 #elif defined(CONFIG_MACH_IXDP2351)
181 static unsigned int netcard_portlist[] __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
182 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
184 #elif defined(CONFIG_ARCH_IXDP2X01)
186 static unsigned int netcard_portlist[] __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
187 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
188 #elif defined(CONFIG_ARCH_PNX010X)
190 #include <asm/arch/gpio.h>
191 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
192 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
193 static unsigned int netcard_portlist[] __initdata = {CIRRUS_DEFAULT_BASE, 0};
194 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
196 static unsigned int netcard_portlist[] __initdata =
197 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
198 static unsigned int cs8900_irq_map[] = {10,11,12,5};
202 static unsigned int net_debug = DEBUGGING;
204 #define net_debug 0 /* gcc will remove all the debug code for us */
207 /* The number of low I/O ports used by the ethercard. */
208 #define NETCARD_IO_EXTENT 16
210 /* we allow the user to override various values normally set in the EEPROM */
211 #define FORCE_RJ45 0x0001 /* pick one of these three */
212 #define FORCE_AUI 0x0002
213 #define FORCE_BNC 0x0004
215 #define FORCE_AUTO 0x0010 /* pick one of these three */
216 #define FORCE_HALF 0x0020
217 #define FORCE_FULL 0x0030
219 /* Information that need to be kept for each board. */
221 struct net_device_stats stats;
222 int chip_type; /* one of: CS8900, CS8920, CS8920M */
223 char chip_revision; /* revision letter of the chip ('A'...) */
224 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
225 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
226 int adapter_cnf; /* adapter configuration from EEPROM */
227 int isa_config; /* ISA configuration from EEPROM */
228 int irq_map; /* IRQ map from EEPROM */
229 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
230 int curr_rx_cfg; /* a copy of PP_RxCFG */
231 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
232 int send_underrun; /* keep track of how many underruns in a row we get */
233 int force; /* force various values; see FORCE* above. */
236 int use_dma; /* Flag: we're using dma */
237 int dma; /* DMA channel */
238 int dmasize; /* 16 or 64 */
239 unsigned char *dma_buff; /* points to the beginning of the buffer */
240 unsigned char *end_dma_buff; /* points to the end of the buffer */
241 unsigned char *rx_dma_ptr; /* points to the next packet */
245 /* Index to functions, as function prototypes. */
247 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
248 static int net_open(struct net_device *dev);
249 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
250 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
251 static void set_multicast_list(struct net_device *dev);
252 static void net_timeout(struct net_device *dev);
253 static void net_rx(struct net_device *dev);
254 static int net_close(struct net_device *dev);
255 static struct net_device_stats *net_get_stats(struct net_device *dev);
256 static void reset_chip(struct net_device *dev);
257 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
258 static int get_eeprom_cksum(int off, int len, int *buffer);
259 static int set_mac_address(struct net_device *dev, void *addr);
260 static void count_rx_errors(int status, struct net_local *lp);
261 #ifdef CONFIG_NET_POLL_CONTROLLER
262 static void net_poll_controller(struct net_device *dev);
265 static void get_dma_channel(struct net_device *dev);
266 static void release_dma_buff(struct net_local *lp);
269 /* Example routines you must write ;->. */
270 #define tx_done(dev) 1
273 * Permit 'cs89x0_dma=N' in the kernel boot environment
275 #if !defined(MODULE) && (ALLOW_DMA != 0)
276 static int g_cs89x0_dma;
278 static int __init dma_fn(char *str)
280 g_cs89x0_dma = simple_strtol(str,NULL,0);
284 __setup("cs89x0_dma=", dma_fn);
285 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
288 static int g_cs89x0_media__force;
290 static int __init media_fn(char *str)
292 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
293 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
294 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
298 __setup("cs89x0_media=", media_fn);
301 /* Check for a network adaptor of this type, and return '0' iff one exists.
302 If dev->base_addr == 0, probe all likely locations.
303 If dev->base_addr == 1, always return failure.
304 If dev->base_addr == 2, allocate space for the device and return success
305 (detachable devices only).
309 struct net_device * __init cs89x0_probe(int unit)
311 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
318 return ERR_PTR(-ENODEV);
320 sprintf(dev->name, "eth%d", unit);
321 netdev_boot_setup_check(dev);
326 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
328 if (io > 0x1ff) { /* Check a single specified location. */
329 err = cs89x0_probe1(dev, io, 0);
330 } else if (io != 0) { /* Don't probe at all. */
333 for (port = netcard_portlist; *port; port++) {
334 if (cs89x0_probe1(dev, *port, 0) == 0)
346 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
351 #if defined(CONFIG_MACH_IXDP2351)
353 readword(unsigned long base_addr, int portno)
355 return __raw_readw(base_addr + (portno << 1));
359 writeword(unsigned long base_addr, int portno, u16 value)
361 __raw_writew(value, base_addr + (portno << 1));
363 #elif defined(CONFIG_ARCH_IXDP2X01)
365 readword(unsigned long base_addr, int portno)
367 return __raw_readl(base_addr + (portno << 1));
371 writeword(unsigned long base_addr, int portno, u16 value)
373 __raw_writel(value, base_addr + (portno << 1));
375 #elif defined(CONFIG_ARCH_PNX010X)
377 readword(unsigned long base_addr, int portno)
379 return inw(base_addr + (portno << 1));
383 writeword(unsigned long base_addr, int portno, u16 value)
385 outw(value, base_addr + (portno << 1));
389 readword(unsigned long base_addr, int portno)
391 return inw(base_addr + portno);
395 writeword(unsigned long base_addr, int portno, u16 value)
397 outw(value, base_addr + portno);
402 readwords(unsigned long base_addr, int portno, void *buf, int length)
404 u8 *buf8 = (u8 *)buf;
409 tmp16 = readword(base_addr, portno);
411 *buf8++ = (u8)(tmp16 >> 8);
416 writewords(unsigned long base_addr, int portno, void *buf, int length)
418 u8 *buf8 = (u8 *)buf;
424 tmp16 |= (*buf8++) << 8;
425 writeword(base_addr, portno, tmp16);
430 readreg(struct net_device *dev, u16 regno)
432 writeword(dev->base_addr, ADD_PORT, regno);
433 return readword(dev->base_addr, DATA_PORT);
437 writereg(struct net_device *dev, u16 regno, u16 value)
439 writeword(dev->base_addr, ADD_PORT, regno);
440 writeword(dev->base_addr, DATA_PORT, value);
444 wait_eeprom_ready(struct net_device *dev)
446 int timeout = jiffies;
447 /* check to see if the EEPROM is ready, a timeout is used -
448 just in case EEPROM is ready when SI_BUSY in the
449 PP_SelfST is clear */
450 while(readreg(dev, PP_SelfST) & SI_BUSY)
451 if (jiffies - timeout >= 40)
457 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
461 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
462 for (i = 0; i < len; i++) {
463 if (wait_eeprom_ready(dev) < 0) return -1;
464 /* Now send the EEPROM read command and EEPROM location to read */
465 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
466 if (wait_eeprom_ready(dev) < 0) return -1;
467 buffer[i] = readreg(dev, PP_EEData);
468 if (net_debug > 3) printk("%04x ", buffer[i]);
470 if (net_debug > 3) printk("\n");
475 get_eeprom_cksum(int off, int len, int *buffer)
480 for (i = 0; i < len; i++)
488 #ifdef CONFIG_NET_POLL_CONTROLLER
490 * Polling receive - used by netconsole and other diagnostic tools
491 * to allow network i/o with interrupts disabled.
493 static void net_poll_controller(struct net_device *dev)
495 disable_irq(dev->irq);
496 net_interrupt(dev->irq, dev, NULL);
497 enable_irq(dev->irq);
501 /* This is the real probe routine. Linux has a history of friendly device
502 probes on the ISA bus. A good device probes avoids doing writes, and
503 verifies that the correct device exists and functions.
508 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
510 struct net_local *lp = netdev_priv(dev);
511 static unsigned version_printed;
514 unsigned rev_type = 0;
515 int eeprom_buff[CHKSUM_LEN];
518 SET_MODULE_OWNER(dev);
519 /* Initialize the device structure. */
521 memset(lp, 0, sizeof(*lp));
522 spin_lock_init(&lp->lock);
527 lp->dma = g_cs89x0_dma;
528 lp->dmasize = 16; /* Could make this an option... */
531 lp->force = g_cs89x0_media__force;
535 #ifdef CONFIG_ARCH_PNX010X
538 /* Map GPIO registers for the pins connected to the CS8900a. */
539 if (map_cirrus_gpio() < 0)
544 /* Map event-router registers. */
545 if (map_event_router() < 0)
551 unmap_event_router();
553 dev->base_addr = ioaddr;
555 for (i = 0 ; i < 3 ; i++)
559 /* Grab the region so we can find another board if autoIRQ fails. */
560 /* WTF is going on here? */
561 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
562 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
563 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
568 #ifdef CONFIG_SH_HICOSH4
569 /* truely reset the chip */
570 writeword(ioaddr, ADD_PORT, 0x0114);
571 writeword(ioaddr, DATA_PORT, 0x0040);
574 /* if they give us an odd I/O address, then do ONE write to
575 the address port, to get it back to address zero, where we
576 expect to find the EISA signature word. An IO with a base of 0x3
577 will skip the test for the ADD_PORT. */
580 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
581 if ((ioaddr & 2) != 2)
582 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
583 printk(KERN_ERR "%s: bad signature 0x%x\n",
584 dev->name, readword(ioaddr & ~3, ADD_PORT));
589 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
590 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
593 writeword(ioaddr, ADD_PORT, PP_ChipID);
595 tmp = readword(ioaddr, DATA_PORT);
596 if (tmp != CHIP_EISA_ID_SIG) {
597 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
598 CHIP_EISA_ID_SIG_STR "\n",
599 dev->name, ioaddr, DATA_PORT, tmp);
604 /* Fill in the 'dev' fields. */
605 dev->base_addr = ioaddr;
607 /* get the chip type */
608 rev_type = readreg(dev, PRODUCT_ID_ADD);
609 lp->chip_type = rev_type &~ REVISON_BITS;
610 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
612 /* Check the chip type and revision in order to set the correct send command
613 CS8920 revision C and CS8900 revision F can use the faster send. */
614 lp->send_cmd = TX_AFTER_381;
615 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
616 lp->send_cmd = TX_NOW;
617 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
618 lp->send_cmd = TX_NOW;
620 if (net_debug && version_printed++ == 0)
623 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
625 lp->chip_type==CS8900?'0':'2',
626 lp->chip_type==CS8920M?"M":"",
632 /* Here we read the current configuration of the chip. If there
633 is no Extended EEPROM then the idea is to not disturb the chip
634 configuration, it should have been correctly setup by automatic
635 EEPROM read on reset. So, if the chip says it read the EEPROM
636 the driver will always do *something* instead of complain that
639 #ifdef CONFIG_SH_HICOSH4
641 /* For the HiCO.SH4 board, things are different: we don't
642 have EEPROM, but there is some data in flash, so we go
643 get it there directly (MAC). */
646 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
648 confd = (__u16*) 0xa0013fc0;
650 confd = (__u16*) 0xa001ffc0;
652 cnt = (*confd++ & 0x00ff) >> 1;
656 switch (j & 0x0fff) {
658 for (i = 0; i < ETH_ALEN/2; i++) {
659 dev->dev_addr[i*2] = confd[i] & 0xFF;
660 dev->dev_addr[i*2+1] = confd[i] >> 8;
671 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
672 (EEPROM_OK|EEPROM_PRESENT)) {
674 for (i=0; i < ETH_ALEN/2; i++) {
676 Addr = readreg(dev, PP_IA+i*2);
677 dev->dev_addr[i*2] = Addr & 0xFF;
678 dev->dev_addr[i*2+1] = Addr >> 8;
681 /* Load the Adapter Configuration.
682 Note: Barring any more specific information from some
683 other source (ie EEPROM+Schematics), we would not know
684 how to operate a 10Base2 interface on the AUI port.
685 However, since we do read the status of HCB1 and use
686 settings that always result in calls to control_dc_dc(dev,0)
687 a BNC interface should work if the enable pin
688 (dc/dc converter) is on HCB1. It will be called AUI
692 i = readreg(dev, PP_LineCTL);
693 /* Preserve the setting of the HCB1 pin. */
694 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
695 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
696 /* Save the sqelch bit */
697 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
698 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
699 /* Check if the card is in 10Base-t only mode */
700 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
701 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
702 /* Check if the card is in AUI only mode */
703 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
704 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
705 /* Check if the card is in Auto mode. */
706 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
707 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
708 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
711 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
712 dev->name, i, lp->adapter_cnf);
714 /* IRQ. Other chips already probe, see below. */
715 if (lp->chip_type == CS8900)
716 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
718 printk( "[Cirrus EEPROM] ");
723 /* First check to see if an EEPROM is attached. */
724 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
726 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
729 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
730 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
731 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
732 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
733 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
734 /* Check if the chip was able to read its own configuration starting
736 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
737 (EEPROM_OK|EEPROM_PRESENT))
738 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
741 /* This reads an extended EEPROM that is not documented
742 in the CS8900 datasheet. */
744 /* get transmission control word but keep the autonegotiation bits */
745 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
746 /* Store adapter configuration */
747 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
748 /* Store ISA configuration */
749 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
750 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
752 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
753 /* store the initial memory base address */
754 for (i = 0; i < ETH_ALEN/2; i++) {
755 dev->dev_addr[i*2] = eeprom_buff[i];
756 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
759 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
760 dev->name, lp->adapter_cnf);
763 /* allow them to force multiple transceivers. If they force multiple, autosense */
766 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
767 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
768 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
769 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
770 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
771 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
772 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
776 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
777 dev->name, lp->force, lp->adapter_cnf);
779 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
781 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
783 /* FIXME: we don't set the Ethernet address on the command line. Use
784 ifconfig IFACE hw ether AABBCCDDEEFF */
786 printk(KERN_INFO "cs89x0 media %s%s%s",
787 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
788 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
789 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
791 lp->irq_map = 0xffff;
793 /* If this is a CS8900 then no pnp soft */
794 if (lp->chip_type != CS8900 &&
795 /* Check if the ISA IRQ has been set */
796 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
797 (i != 0 && i < CS8920_NO_INTS))) {
801 i = lp->isa_config & INT_NO_MASK;
802 if (lp->chip_type == CS8900) {
803 #if defined(CONFIG_MACH_IXDP2351) || defined(CONFIG_ARCH_IXDP2X01) || defined(CONFIG_ARCH_PNX010X)
804 i = cs8900_irq_map[0];
806 /* Translate the IRQ using the IRQ mapping table. */
807 if (i >= sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
808 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
810 i = cs8900_irq_map[i];
812 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
814 int irq_map_buff[IRQ_MAP_LEN/2];
816 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
818 irq_map_buff) >= 0) {
819 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
820 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
828 printk(" IRQ %d", dev->irq);
832 get_dma_channel(dev);
833 printk(", DMA %d", dev->dma);
838 printk(", programmed I/O");
841 /* print the ethernet address. */
843 for (i = 0; i < ETH_ALEN; i++)
845 printk("%c%02x", i ? ':' : ' ', dev->dev_addr[i]);
848 dev->open = net_open;
849 dev->stop = net_close;
850 dev->tx_timeout = net_timeout;
851 dev->watchdog_timeo = HZ;
852 dev->hard_start_xmit = net_send_packet;
853 dev->get_stats = net_get_stats;
854 dev->set_multicast_list = set_multicast_list;
855 dev->set_mac_address = set_mac_address;
856 #ifdef CONFIG_NET_POLL_CONTROLLER
857 dev->poll_controller = net_poll_controller;
862 printk("cs89x0_probe1() successful\n");
864 retval = register_netdev(dev);
869 writeword(dev->base_addr, ADD_PORT, PP_ChipID);
871 release_region(ioaddr & ~3, NETCARD_IO_EXTENT);
877 /*********************************
878 * This page contains DMA routines
879 **********************************/
883 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
886 get_dma_channel(struct net_device *dev)
888 struct net_local *lp = netdev_priv(dev);
892 lp->isa_config |= ISA_RxDMA;
894 if ((lp->isa_config & ANY_ISA_DMA) == 0)
896 dev->dma = lp->isa_config & DMA_NO_MASK;
897 if (lp->chip_type == CS8900)
899 if (dev->dma < 5 || dev->dma > 7) {
900 lp->isa_config &= ~ANY_ISA_DMA;
908 write_dma(struct net_device *dev, int chip_type, int dma)
910 struct net_local *lp = netdev_priv(dev);
911 if ((lp->isa_config & ANY_ISA_DMA) == 0)
913 if (chip_type == CS8900) {
914 writereg(dev, PP_CS8900_ISADMA, dma-5);
916 writereg(dev, PP_CS8920_ISADMA, dma);
921 set_dma_cfg(struct net_device *dev)
923 struct net_local *lp = netdev_priv(dev);
926 if ((lp->isa_config & ANY_ISA_DMA) == 0) {
928 printk("set_dma_cfg(): no DMA\n");
931 if (lp->isa_config & ISA_RxDMA) {
932 lp->curr_rx_cfg |= RX_DMA_ONLY;
934 printk("set_dma_cfg(): RX_DMA_ONLY\n");
936 lp->curr_rx_cfg |= AUTO_RX_DMA; /* not that we support it... */
938 printk("set_dma_cfg(): AUTO_RX_DMA\n");
944 dma_bufcfg(struct net_device *dev)
946 struct net_local *lp = netdev_priv(dev);
948 return (lp->isa_config & ANY_ISA_DMA)? RX_DMA_ENBL : 0;
954 dma_busctl(struct net_device *dev)
957 struct net_local *lp = netdev_priv(dev);
959 if (lp->isa_config & ANY_ISA_DMA)
960 retval |= RESET_RX_DMA; /* Reset the DMA pointer */
961 if (lp->isa_config & DMA_BURST)
962 retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
963 if (lp->dmasize == 64)
964 retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
965 retval |= MEMORY_ON; /* we need memory enabled to use DMA. */
971 dma_rx(struct net_device *dev)
973 struct net_local *lp = netdev_priv(dev);
976 unsigned char *bp = lp->rx_dma_ptr;
978 status = bp[0] + (bp[1]<<8);
979 length = bp[2] + (bp[3]<<8);
982 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
983 dev->name, (unsigned long)bp, status, length);
985 if ((status & RX_OK) == 0) {
986 count_rx_errors(status, lp);
987 goto skip_this_frame;
990 /* Malloc up new buffer. */
991 skb = dev_alloc_skb(length + 2);
993 if (net_debug) /* I don't think we want to do this to a stressed system */
994 printk("%s: Memory squeeze, dropping packet.\n", dev->name);
995 lp->stats.rx_dropped++;
997 /* AKPM: advance bp to the next frame */
999 bp += (length + 3) & ~3;
1000 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1001 lp->rx_dma_ptr = bp;
1004 skb_reserve(skb, 2); /* longword align L3 header */
1007 if (bp + length > lp->end_dma_buff) {
1008 int semi_cnt = lp->end_dma_buff - bp;
1009 memcpy(skb_put(skb,semi_cnt), bp, semi_cnt);
1010 memcpy(skb_put(skb,length - semi_cnt), lp->dma_buff,
1013 memcpy(skb_put(skb,length), bp, length);
1015 bp += (length + 3) & ~3;
1016 if (bp >= lp->end_dma_buff) bp -= lp->dmasize*1024;
1017 lp->rx_dma_ptr = bp;
1019 if (net_debug > 3) {
1020 printk( "%s: received %d byte DMA packet of type %x\n",
1022 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1024 skb->protocol=eth_type_trans(skb,dev);
1026 dev->last_rx = jiffies;
1027 lp->stats.rx_packets++;
1028 lp->stats.rx_bytes += length;
1031 #endif /* ALLOW_DMA */
1033 void __init reset_chip(struct net_device *dev)
1035 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1036 struct net_local *lp = netdev_priv(dev);
1037 int ioaddr = dev->base_addr;
1039 int reset_start_time;
1041 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1046 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1047 if (lp->chip_type != CS8900) {
1048 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1049 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1050 outb(dev->irq, ioaddr + DATA_PORT);
1051 outb(0, ioaddr + DATA_PORT + 1);
1053 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1054 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1055 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1057 #endif /* IXDP2x01 */
1059 /* Wait until the chip is reset */
1060 reset_start_time = jiffies;
1061 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
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 != sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]); i++)
1250 if (cs8900_irq_map[i] == irq)
1253 if (i == sizeof(cs8900_irq_map)/sizeof(cs8900_irq_map[0]))
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 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01) && !defined(CONFIG_ARCH_PNX010X)
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);
1402 release_dma_buff(lp);
1404 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1405 free_irq(dev->irq, dev);
1410 /* set the hardware to the configured choice */
1411 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1412 case A_CNF_MEDIA_10B_T:
1413 result = detect_tp(dev);
1414 if (result==DETECTED_NONE) {
1415 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1416 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1417 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1420 case A_CNF_MEDIA_AUI:
1421 result = detect_aui(dev);
1422 if (result==DETECTED_NONE) {
1423 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1424 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1425 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1428 case A_CNF_MEDIA_10B_2:
1429 result = detect_bnc(dev);
1430 if (result==DETECTED_NONE) {
1431 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1432 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1433 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1436 case A_CNF_MEDIA_AUTO:
1437 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1438 if (lp->adapter_cnf & A_CNF_10B_T)
1439 if ((result = detect_tp(dev)) != DETECTED_NONE)
1441 if (lp->adapter_cnf & A_CNF_AUI)
1442 if ((result = detect_aui(dev)) != DETECTED_NONE)
1444 if (lp->adapter_cnf & A_CNF_10B_2)
1445 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1447 printk(KERN_ERR "%s: no media detected\n", dev->name);
1452 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1454 case DETECTED_RJ45H:
1455 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1457 case DETECTED_RJ45F:
1458 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1461 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1464 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1468 /* Turn on both receive and transmit operations */
1469 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1471 /* Receive only error free packets addressed to this card */
1473 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1475 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1477 if (lp->isa_config & STREAM_TRANSFER)
1478 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1482 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1484 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1485 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1487 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1491 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1493 /* now that we've got our act together, enable everything */
1494 writereg(dev, PP_BusCTL, ENABLE_IRQ
1495 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1500 netif_start_queue(dev);
1502 printk("cs89x0: net_open() succeeded\n");
1508 static void net_timeout(struct net_device *dev)
1510 /* If we get here, some higher level has decided we are broken.
1511 There should really be a "kick me" function call instead. */
1512 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1513 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1514 /* Try to restart the adaptor. */
1515 netif_wake_queue(dev);
1518 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1520 struct net_local *lp = netdev_priv(dev);
1522 if (net_debug > 3) {
1523 printk("%s: sent %d byte packet of type %x\n",
1524 dev->name, skb->len,
1525 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1528 /* keep the upload from being interrupted, since we
1529 ask the chip to start transmitting before the
1530 whole packet has been completely uploaded. */
1532 spin_lock_irq(&lp->lock);
1533 netif_stop_queue(dev);
1535 /* initiate a transmit sequence */
1536 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1537 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1539 /* Test to see if the chip has allocated memory for the packet */
1540 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1542 * Gasp! It hasn't. But that shouldn't happen since
1543 * we're waiting for TxOk, so return 1 and requeue this packet.
1546 spin_unlock_irq(&lp->lock);
1547 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1550 /* Write the contents of the packet */
1551 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1552 spin_unlock_irq(&lp->lock);
1553 lp->stats.tx_bytes += skb->len;
1554 dev->trans_start = jiffies;
1555 dev_kfree_skb (skb);
1558 * We DO NOT call netif_wake_queue() here.
1559 * We also DO NOT call netif_start_queue().
1561 * Either of these would cause another bottom half run through
1562 * net_send_packet() before this packet has fully gone out. That causes
1563 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1564 * a dog. We just return and wait for the Tx completion interrupt handler
1565 * to restart the netdevice layer
1571 /* The typical workload of the driver:
1572 Handle the network interface interrupts. */
1574 static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs * regs)
1576 struct net_device *dev = dev_id;
1577 struct net_local *lp;
1581 ioaddr = dev->base_addr;
1582 lp = netdev_priv(dev);
1584 /* we MUST read all the events out of the ISQ, otherwise we'll never
1585 get interrupted again. As a consequence, we can't have any limit
1586 on the number of times we loop in the interrupt handler. The
1587 hardware guarantees that eventually we'll run out of events. Of
1588 course, if you're on a slow machine, and packets are arriving
1589 faster than you can read them off, you're screwed. Hasta la
1591 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1592 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1594 switch(status & ISQ_EVENT_MASK) {
1595 case ISQ_RECEIVER_EVENT:
1596 /* Got a packet(s). */
1599 case ISQ_TRANSMITTER_EVENT:
1600 lp->stats.tx_packets++;
1601 netif_wake_queue(dev); /* Inform upper layers. */
1602 if ((status & ( TX_OK |
1606 TX_16_COL)) != TX_OK) {
1607 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1608 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1609 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1610 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1611 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1614 case ISQ_BUFFER_EVENT:
1615 if (status & READY_FOR_TX) {
1616 /* we tried to transmit a packet earlier,
1617 but inexplicably ran out of buffers.
1618 That shouldn't happen since we only ever
1619 load one packet. Shrug. Do the right
1621 netif_wake_queue(dev); /* Inform upper layers. */
1623 if (status & TX_UNDERRUN) {
1624 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1625 lp->send_underrun++;
1626 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1627 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1628 /* transmit cycle is done, although
1629 frame wasn't transmitted - this
1630 avoids having to wait for the upper
1631 layers to timeout on us, in the
1632 event of a tx underrun */
1633 netif_wake_queue(dev); /* Inform upper layers. */
1636 if (lp->use_dma && (status & RX_DMA)) {
1637 int count = readreg(dev, PP_DmaFrameCnt);
1640 printk("%s: receiving %d DMA frames\n", dev->name, count);
1641 if (net_debug > 2 && count >1)
1642 printk("%s: receiving %d DMA frames\n", dev->name, count);
1645 count = readreg(dev, PP_DmaFrameCnt);
1646 if (net_debug > 2 && count > 0)
1647 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1652 case ISQ_RX_MISS_EVENT:
1653 lp->stats.rx_missed_errors += (status >>6);
1655 case ISQ_TX_COL_EVENT:
1656 lp->stats.collisions += (status >>6);
1660 return IRQ_RETVAL(handled);
1664 count_rx_errors(int status, struct net_local *lp)
1666 lp->stats.rx_errors++;
1667 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1668 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1669 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1671 lp->stats.rx_crc_errors++;
1672 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1676 /* We have a good packet(s), get it/them out of the buffers. */
1678 net_rx(struct net_device *dev)
1680 struct net_local *lp = netdev_priv(dev);
1681 struct sk_buff *skb;
1684 int ioaddr = dev->base_addr;
1685 status = readword(ioaddr, RX_FRAME_PORT);
1686 length = readword(ioaddr, RX_FRAME_PORT);
1688 if ((status & RX_OK) == 0) {
1689 count_rx_errors(status, lp);
1693 /* Malloc up new buffer. */
1694 skb = dev_alloc_skb(length + 2);
1696 #if 0 /* Again, this seems a cruel thing to do */
1697 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1699 lp->stats.rx_dropped++;
1702 skb_reserve(skb, 2); /* longword align L3 header */
1705 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1707 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1709 if (net_debug > 3) {
1710 printk( "%s: received %d byte packet of type %x\n",
1712 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1715 skb->protocol=eth_type_trans(skb,dev);
1717 dev->last_rx = jiffies;
1718 lp->stats.rx_packets++;
1719 lp->stats.rx_bytes += length;
1723 static void release_dma_buff(struct net_local *lp)
1726 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1727 lp->dma_buff = NULL;
1732 /* The inverse routine to net_open(). */
1734 net_close(struct net_device *dev)
1737 struct net_local *lp = netdev_priv(dev);
1740 netif_stop_queue(dev);
1742 writereg(dev, PP_RxCFG, 0);
1743 writereg(dev, PP_TxCFG, 0);
1744 writereg(dev, PP_BufCFG, 0);
1745 writereg(dev, PP_BusCTL, 0);
1747 free_irq(dev->irq, dev);
1750 if (lp->use_dma && lp->dma) {
1752 release_dma_buff(lp);
1756 /* Update the statistics here. */
1760 /* Get the current statistics. This may be called with the card open or
1762 static struct net_device_stats *
1763 net_get_stats(struct net_device *dev)
1765 struct net_local *lp = netdev_priv(dev);
1766 unsigned long flags;
1768 spin_lock_irqsave(&lp->lock, flags);
1769 /* Update the statistics from the device registers. */
1770 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1771 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1772 spin_unlock_irqrestore(&lp->lock, flags);
1777 static void set_multicast_list(struct net_device *dev)
1779 struct net_local *lp = netdev_priv(dev);
1780 unsigned long flags;
1782 spin_lock_irqsave(&lp->lock, flags);
1783 if(dev->flags&IFF_PROMISC)
1785 lp->rx_mode = RX_ALL_ACCEPT;
1787 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1789 /* The multicast-accept list is initialized to accept-all, and we
1790 rely on higher-level filtering for now. */
1791 lp->rx_mode = RX_MULTCAST_ACCEPT;
1796 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1798 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1799 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1800 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1801 spin_unlock_irqrestore(&lp->lock, flags);
1805 static int set_mac_address(struct net_device *dev, void *p)
1808 struct sockaddr *addr = p;
1811 if (netif_running(dev))
1814 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1817 printk("%s: Setting MAC address to ", dev->name);
1818 for (i = 0; i < dev->addr_len; i++)
1819 printk(" %2.2x", dev->dev_addr[i]);
1822 /* set the Ethernet address */
1823 for (i=0; i < ETH_ALEN/2; i++)
1824 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1831 static struct net_device *dev_cs89x0;
1834 * Support the 'debug' module parm even if we're compiled for non-debug to
1835 * avoid breaking someone's startup scripts
1841 static char media[8];
1842 static int duplex=-1;
1844 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1846 static int dmasize=16; /* or 64 */
1848 module_param(io, int, 0);
1849 module_param(irq, int, 0);
1850 module_param(debug, int, 0);
1851 module_param_string(media, media, sizeof(media), 0);
1852 module_param(duplex, int, 0);
1853 module_param(dma , int, 0);
1854 module_param(dmasize , int, 0);
1855 module_param(use_dma , int, 0);
1856 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1857 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1859 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1861 MODULE_PARM_DESC(debug, "(ignored)");
1863 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1864 /* No other value than -1 for duplex seems to be currently interpreted */
1865 MODULE_PARM_DESC(duplex, "(ignored)");
1867 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1868 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1869 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1871 MODULE_PARM_DESC(dma , "(ignored)");
1872 MODULE_PARM_DESC(dmasize , "(ignored)");
1873 MODULE_PARM_DESC(use_dma , "(ignored)");
1877 MODULE_LICENSE("GPL");
1881 * media=t - specify media type
1885 * duplex=0 - specify forced half/full/autonegotiate duplex
1886 * debug=# - debug level
1889 * Default Chip Configuration:
1890 * DMA Burst = enabled
1891 * IOCHRDY Enabled = enabled
1893 * CS8900 defaults to half-duplex if not specified on command-line
1894 * CS8920 defaults to autoneg if not specified on command-line
1895 * Use reset defaults for other config parameters
1898 * media type specified is supported (circuitry is present)
1899 * if memory address is > 1MB, then required mem decode hw is present
1900 * if 10B-2, then agent other than driver will enable DC/DC converter
1901 (hw or software util)
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