1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
6 Written 1996 by Russell Nelson, with reference to skeleton.c
7 written 1993-1994 by Donald Becker.
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
12 The author may be reached at nelson@crynwr.com, Crynwr
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
17 Mike Cruse : mcruse@cti-ltd.com
18 : Changes for Linux 2.0 compatibility.
19 : Added dev_id parameter in net_interrupt(),
20 : request_irq() and free_irq(). Just NULL for now.
22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
23 : in net_open() and net_close() so kerneld would know
24 : that the module is in use and wouldn't eject the
27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
28 : as an example. Disabled autoprobing in init_module(),
29 : not a good thing to do to other devices while Linux
30 : is running from all accounts.
32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
35 : email: ethernet@crystal.cirrus.com
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
39 Andrew Morton : andrewm@uow.edu.au
41 : Handle kmalloc() failures
42 : Other resource allocation fixes
44 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
45 : If ALLOW_DMA is true, make DMA runtime selectable
46 : Folded in changes from Cirrus (Melody Lee
47 : <klee@crystal.cirrus.com>)
48 : Don't call netif_wake_queue() in net_send_packet()
49 : Fixed an out-of-mem bug in dma_rx()
50 : Updated Documentation/networking/cs89x0.txt
52 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre1
53 : Use skb_reserve to longword align IP header (two places)
54 : Remove a delay loop from dma_rx()
55 : Replace '100' with HZ
56 : Clean up a couple of skb API abuses
57 : Added 'cs89x0_dma=N' kernel boot option
58 : Correctly initialise lp->lock in non-module compile
60 Andrew Morton : andrewm@uow.edu.au / Kernel 2.3.99-pre4-1
61 : MOD_INC/DEC race fix (see
62 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
64 Andrew Morton : andrewm@uow.edu.au / Kernel 2.4.0-test7-pre2
65 : Enhanced EEPROM support to cover more devices,
66 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
67 : (Jason Gunthorpe <jgg@ualberta.ca>)
69 Andrew Morton : Kernel 2.4.0-test11-pre4
70 : Use dev->name in request_*() (Andrey Panin)
71 : Fix an error-path memleak in init_module()
72 : Preserve return value from request_irq()
73 : Fix type of `media' module parm (Keith Owens)
74 : Use SET_MODULE_OWNER()
75 : Tidied up strange request_irq() abuse in net_open().
77 Andrew Morton : Kernel 2.4.3-pre1
78 : Request correct number of pages for DMA (Hugh Dickens)
79 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
80 : because unregister_netdev() calls get_stats.
81 : Make `version[]' __initdata
82 : Uninlined the read/write reg/word functions.
84 Oskar Schirmer : oskar@scara.com
85 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
87 Deepak Saxena : dsaxena@plexity.net
88 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
90 Dmitry Pervushin : dpervushin@ru.mvista.com
91 : PNX010X platform support
93 Deepak Saxena : dsaxena@plexity.net
94 : Intel IXDP2351 platform support
96 Dmitry Pervushin : dpervushin@ru.mvista.com
97 : PNX010X platform support
101 /* Always include 'config.h' first in case the user wants to turn on
102 or override something. */
103 #include <linux/module.h>
106 * Set this to zero to disable DMA code
108 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
109 * module options so we don't break any startup scripts.
111 #ifndef CONFIG_ISA_DMA_API
118 * Set this to zero to remove all the debug statements via
119 * dead code elimination
126 Crynwr packet driver epktisa.
128 Crystal Semiconductor data sheets.
132 #include <linux/errno.h>
133 #include <linux/netdevice.h>
134 #include <linux/etherdevice.h>
135 #include <linux/kernel.h>
136 #include <linux/types.h>
137 #include <linux/fcntl.h>
138 #include <linux/interrupt.h>
139 #include <linux/ioport.h>
140 #include <linux/in.h>
141 #include <linux/skbuff.h>
142 #include <linux/slab.h>
143 #include <linux/spinlock.h>
144 #include <linux/string.h>
145 #include <linux/init.h>
146 #include <linux/bitops.h>
147 #include <linux/delay.h>
149 #include <asm/system.h>
158 static char version[] __initdata =
159 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>\n";
161 #define DRV_NAME "cs89x0"
163 /* First, a few definitions that the brave might change.
164 A zero-terminated list of I/O addresses to be probed. Some special flags..
165 Addr & 1 = Read back the address port, look for signature and reset
166 the page window before probing
167 Addr & 3 = Reset the page window and probe
168 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
169 but it is possible that a Cirrus board could be plugged into the ISA
171 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
172 them to system IRQ numbers. This mapping is card specific and is set to
173 the configuration of the Cirrus Eval board for this chip. */
174 #ifdef CONFIG_ARCH_CLPS7500
175 static unsigned int netcard_portlist[] __used __initdata =
176 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
177 static unsigned int cs8900_irq_map[] = {12,0,0,0};
178 #elif defined(CONFIG_SH_HICOSH4)
179 static unsigned int netcard_portlist[] __used __initdata =
181 static unsigned int cs8900_irq_map[] = {1,0,0,0};
182 #elif defined(CONFIG_MACH_IXDP2351)
183 static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
184 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
186 #elif defined(CONFIG_ARCH_IXDP2X01)
188 static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
189 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
190 #elif defined(CONFIG_ARCH_PNX010X)
192 #include <mach/gpio.h>
193 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
194 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
195 static unsigned int netcard_portlist[] __used __initdata = {CIRRUS_DEFAULT_BASE, 0};
196 static unsigned int cs8900_irq_map[] = {CIRRUS_DEFAULT_IRQ, 0, 0, 0};
197 #elif defined(CONFIG_MACH_MX31ADS)
198 #include <mach/board-mx31ads.h>
199 static unsigned int netcard_portlist[] __used __initdata = {
200 PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
202 static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
204 static unsigned int netcard_portlist[] __used __initdata =
205 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
206 static unsigned int cs8900_irq_map[] = {10,11,12,5};
210 static unsigned int net_debug = DEBUGGING;
212 #define net_debug 0 /* gcc will remove all the debug code for us */
215 /* The number of low I/O ports used by the ethercard. */
216 #define NETCARD_IO_EXTENT 16
218 /* we allow the user to override various values normally set in the EEPROM */
219 #define FORCE_RJ45 0x0001 /* pick one of these three */
220 #define FORCE_AUI 0x0002
221 #define FORCE_BNC 0x0004
223 #define FORCE_AUTO 0x0010 /* pick one of these three */
224 #define FORCE_HALF 0x0020
225 #define FORCE_FULL 0x0030
227 /* Information that need to be kept for each board. */
229 struct net_device_stats stats;
230 int chip_type; /* one of: CS8900, CS8920, CS8920M */
231 char chip_revision; /* revision letter of the chip ('A'...) */
232 int send_cmd; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
233 int auto_neg_cnf; /* auto-negotiation word from EEPROM */
234 int adapter_cnf; /* adapter configuration from EEPROM */
235 int isa_config; /* ISA configuration from EEPROM */
236 int irq_map; /* IRQ map from EEPROM */
237 int rx_mode; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
238 int curr_rx_cfg; /* a copy of PP_RxCFG */
239 int linectl; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
240 int send_underrun; /* keep track of how many underruns in a row we get */
241 int force; /* force various values; see FORCE* above. */
244 int use_dma; /* Flag: we're using dma */
245 int dma; /* DMA channel */
246 int dmasize; /* 16 or 64 */
247 unsigned char *dma_buff; /* points to the beginning of the buffer */
248 unsigned char *end_dma_buff; /* points to the end of the buffer */
249 unsigned char *rx_dma_ptr; /* points to the next packet */
253 /* Index to functions, as function prototypes. */
255 static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
256 static int net_open(struct net_device *dev);
257 static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
258 static irqreturn_t net_interrupt(int irq, void *dev_id);
259 static void set_multicast_list(struct net_device *dev);
260 static void net_timeout(struct net_device *dev);
261 static void net_rx(struct net_device *dev);
262 static int net_close(struct net_device *dev);
263 static struct net_device_stats *net_get_stats(struct net_device *dev);
264 static void reset_chip(struct net_device *dev);
265 static int get_eeprom_data(struct net_device *dev, int off, int len, int *buffer);
266 static int get_eeprom_cksum(int off, int len, int *buffer);
267 static int set_mac_address(struct net_device *dev, void *addr);
268 static void count_rx_errors(int status, struct net_local *lp);
269 #ifdef CONFIG_NET_POLL_CONTROLLER
270 static void net_poll_controller(struct net_device *dev);
273 static void get_dma_channel(struct net_device *dev);
274 static void release_dma_buff(struct net_local *lp);
277 /* Example routines you must write ;->. */
278 #define tx_done(dev) 1
281 * Permit 'cs89x0_dma=N' in the kernel boot environment
283 #if !defined(MODULE) && (ALLOW_DMA != 0)
284 static int g_cs89x0_dma;
286 static int __init dma_fn(char *str)
288 g_cs89x0_dma = simple_strtol(str,NULL,0);
292 __setup("cs89x0_dma=", dma_fn);
293 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
296 static int g_cs89x0_media__force;
298 static int __init media_fn(char *str)
300 if (!strcmp(str, "rj45")) g_cs89x0_media__force = FORCE_RJ45;
301 else if (!strcmp(str, "aui")) g_cs89x0_media__force = FORCE_AUI;
302 else if (!strcmp(str, "bnc")) g_cs89x0_media__force = FORCE_BNC;
306 __setup("cs89x0_media=", media_fn);
309 /* Check for a network adaptor of this type, and return '0' iff one exists.
310 If dev->base_addr == 0, probe all likely locations.
311 If dev->base_addr == 1, always return failure.
312 If dev->base_addr == 2, allocate space for the device and return success
313 (detachable devices only).
317 struct net_device * __init cs89x0_probe(int unit)
319 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
326 return ERR_PTR(-ENODEV);
328 sprintf(dev->name, "eth%d", unit);
329 netdev_boot_setup_check(dev);
334 printk("cs89x0:cs89x0_probe(0x%x)\n", io);
336 if (io > 0x1ff) { /* Check a single specified location. */
337 err = cs89x0_probe1(dev, io, 0);
338 } else if (io != 0) { /* Don't probe at all. */
341 for (port = netcard_portlist; *port; port++) {
342 if (cs89x0_probe1(dev, *port, 0) == 0)
354 printk(KERN_WARNING "cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
359 #if defined(CONFIG_MACH_IXDP2351)
361 readword(unsigned long base_addr, int portno)
363 return __raw_readw(base_addr + (portno << 1));
367 writeword(unsigned long base_addr, int portno, u16 value)
369 __raw_writew(value, base_addr + (portno << 1));
371 #elif defined(CONFIG_ARCH_IXDP2X01)
373 readword(unsigned long base_addr, int portno)
375 return __raw_readl(base_addr + (portno << 1));
379 writeword(unsigned long base_addr, int portno, u16 value)
381 __raw_writel(value, base_addr + (portno << 1));
383 #elif defined(CONFIG_ARCH_PNX010X)
385 readword(unsigned long base_addr, int portno)
387 return inw(base_addr + (portno << 1));
391 writeword(unsigned long base_addr, int portno, u16 value)
393 outw(value, base_addr + (portno << 1));
397 readword(unsigned long base_addr, int portno)
399 return inw(base_addr + portno);
403 writeword(unsigned long base_addr, int portno, u16 value)
405 outw(value, base_addr + portno);
410 readwords(unsigned long base_addr, int portno, void *buf, int length)
412 u8 *buf8 = (u8 *)buf;
417 tmp16 = readword(base_addr, portno);
419 *buf8++ = (u8)(tmp16 >> 8);
424 writewords(unsigned long base_addr, int portno, void *buf, int length)
426 u8 *buf8 = (u8 *)buf;
432 tmp16 |= (*buf8++) << 8;
433 writeword(base_addr, portno, tmp16);
438 readreg(struct net_device *dev, u16 regno)
440 writeword(dev->base_addr, ADD_PORT, regno);
441 return readword(dev->base_addr, DATA_PORT);
445 writereg(struct net_device *dev, u16 regno, u16 value)
447 writeword(dev->base_addr, ADD_PORT, regno);
448 writeword(dev->base_addr, DATA_PORT, value);
452 wait_eeprom_ready(struct net_device *dev)
454 int timeout = jiffies;
455 /* check to see if the EEPROM is ready, a timeout is used -
456 just in case EEPROM is ready when SI_BUSY in the
457 PP_SelfST is clear */
458 while(readreg(dev, PP_SelfST) & SI_BUSY)
459 if (jiffies - timeout >= 40)
465 get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
469 if (net_debug > 3) printk("EEPROM data from %x for %x:\n",off,len);
470 for (i = 0; i < len; i++) {
471 if (wait_eeprom_ready(dev) < 0) return -1;
472 /* Now send the EEPROM read command and EEPROM location to read */
473 writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
474 if (wait_eeprom_ready(dev) < 0) return -1;
475 buffer[i] = readreg(dev, PP_EEData);
476 if (net_debug > 3) printk("%04x ", buffer[i]);
478 if (net_debug > 3) printk("\n");
483 get_eeprom_cksum(int off, int len, int *buffer)
488 for (i = 0; i < len; i++)
496 #ifdef CONFIG_NET_POLL_CONTROLLER
498 * Polling receive - used by netconsole and other diagnostic tools
499 * to allow network i/o with interrupts disabled.
501 static void net_poll_controller(struct net_device *dev)
503 disable_irq(dev->irq);
504 net_interrupt(dev->irq, dev);
505 enable_irq(dev->irq);
509 /* This is the real probe routine. Linux has a history of friendly device
510 probes on the ISA bus. A good device probes avoids doing writes, and
511 verifies that the correct device exists and functions.
516 cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
518 struct net_local *lp = netdev_priv(dev);
519 static unsigned version_printed;
522 unsigned rev_type = 0;
523 int eeprom_buff[CHKSUM_LEN];
525 DECLARE_MAC_BUF(mac);
527 /* Initialize the device structure. */
529 memset(lp, 0, sizeof(*lp));
530 spin_lock_init(&lp->lock);
535 lp->dma = g_cs89x0_dma;
536 lp->dmasize = 16; /* Could make this an option... */
539 lp->force = g_cs89x0_media__force;
543 #ifdef CONFIG_ARCH_PNX010X
546 /* Map GPIO registers for the pins connected to the CS8900a. */
547 if (map_cirrus_gpio() < 0)
552 /* Map event-router registers. */
553 if (map_event_router() < 0)
559 unmap_event_router();
561 dev->base_addr = ioaddr;
563 for (i = 0 ; i < 3 ; i++)
567 /* Grab the region so we can find another board if autoIRQ fails. */
568 /* WTF is going on here? */
569 if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
570 printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
571 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
576 #ifdef CONFIG_SH_HICOSH4
577 /* truely reset the chip */
578 writeword(ioaddr, ADD_PORT, 0x0114);
579 writeword(ioaddr, DATA_PORT, 0x0040);
582 /* if they give us an odd I/O address, then do ONE write to
583 the address port, to get it back to address zero, where we
584 expect to find the EISA signature word. An IO with a base of 0x3
585 will skip the test for the ADD_PORT. */
588 printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
589 if ((ioaddr & 2) != 2)
590 if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
591 printk(KERN_ERR "%s: bad signature 0x%x\n",
592 dev->name, readword(ioaddr & ~3, ADD_PORT));
599 printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
600 ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
601 writeword(ioaddr, ADD_PORT, PP_ChipID);
603 tmp = readword(ioaddr, DATA_PORT);
604 if (tmp != CHIP_EISA_ID_SIG) {
605 printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
606 CHIP_EISA_ID_SIG_STR "\n",
607 dev->name, ioaddr, DATA_PORT, tmp);
612 /* Fill in the 'dev' fields. */
613 dev->base_addr = ioaddr;
615 /* get the chip type */
616 rev_type = readreg(dev, PRODUCT_ID_ADD);
617 lp->chip_type = rev_type &~ REVISON_BITS;
618 lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
620 /* Check the chip type and revision in order to set the correct send command
621 CS8920 revision C and CS8900 revision F can use the faster send. */
622 lp->send_cmd = TX_AFTER_381;
623 if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
624 lp->send_cmd = TX_NOW;
625 if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
626 lp->send_cmd = TX_NOW;
628 if (net_debug && version_printed++ == 0)
631 printk(KERN_INFO "%s: cs89%c0%s rev %c found at %#3lx ",
633 lp->chip_type==CS8900?'0':'2',
634 lp->chip_type==CS8920M?"M":"",
640 /* Here we read the current configuration of the chip. If there
641 is no Extended EEPROM then the idea is to not disturb the chip
642 configuration, it should have been correctly setup by automatic
643 EEPROM read on reset. So, if the chip says it read the EEPROM
644 the driver will always do *something* instead of complain that
647 #ifdef CONFIG_SH_HICOSH4
649 /* For the HiCO.SH4 board, things are different: we don't
650 have EEPROM, but there is some data in flash, so we go
651 get it there directly (MAC). */
654 if (((* (volatile __u32 *) 0xa0013ff0) & 0x00ffffff)
656 confd = (__u16*) 0xa0013fc0;
658 confd = (__u16*) 0xa001ffc0;
660 cnt = (*confd++ & 0x00ff) >> 1;
664 switch (j & 0x0fff) {
666 for (i = 0; i < ETH_ALEN/2; i++) {
667 dev->dev_addr[i*2] = confd[i] & 0xFF;
668 dev->dev_addr[i*2+1] = confd[i] >> 8;
679 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
680 (EEPROM_OK|EEPROM_PRESENT)) {
682 for (i=0; i < ETH_ALEN/2; i++) {
684 Addr = readreg(dev, PP_IA+i*2);
685 dev->dev_addr[i*2] = Addr & 0xFF;
686 dev->dev_addr[i*2+1] = Addr >> 8;
689 /* Load the Adapter Configuration.
690 Note: Barring any more specific information from some
691 other source (ie EEPROM+Schematics), we would not know
692 how to operate a 10Base2 interface on the AUI port.
693 However, since we do read the status of HCB1 and use
694 settings that always result in calls to control_dc_dc(dev,0)
695 a BNC interface should work if the enable pin
696 (dc/dc converter) is on HCB1. It will be called AUI
700 i = readreg(dev, PP_LineCTL);
701 /* Preserve the setting of the HCB1 pin. */
702 if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
703 lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
704 /* Save the sqelch bit */
705 if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
706 lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
707 /* Check if the card is in 10Base-t only mode */
708 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
709 lp->adapter_cnf |= A_CNF_10B_T | A_CNF_MEDIA_10B_T;
710 /* Check if the card is in AUI only mode */
711 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
712 lp->adapter_cnf |= A_CNF_AUI | A_CNF_MEDIA_AUI;
713 /* Check if the card is in Auto mode. */
714 if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
715 lp->adapter_cnf |= A_CNF_AUI | A_CNF_10B_T |
716 A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
719 printk(KERN_INFO "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
720 dev->name, i, lp->adapter_cnf);
722 /* IRQ. Other chips already probe, see below. */
723 if (lp->chip_type == CS8900)
724 lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
726 printk( "[Cirrus EEPROM] ");
731 /* First check to see if an EEPROM is attached. */
732 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
734 printk(KERN_NOTICE "cs89x0: No EEPROM on HiCO.SH4\n");
737 if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
738 printk(KERN_WARNING "cs89x0: No EEPROM, relying on command line....\n");
739 else if (get_eeprom_data(dev, START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
740 printk(KERN_WARNING "\ncs89x0: EEPROM read failed, relying on command line.\n");
741 } else if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN,eeprom_buff) < 0) {
742 /* Check if the chip was able to read its own configuration starting
744 if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
745 (EEPROM_OK|EEPROM_PRESENT))
746 printk(KERN_WARNING "cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
749 /* This reads an extended EEPROM that is not documented
750 in the CS8900 datasheet. */
752 /* get transmission control word but keep the autonegotiation bits */
753 if (!lp->auto_neg_cnf) lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2];
754 /* Store adapter configuration */
755 if (!lp->adapter_cnf) lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2];
756 /* Store ISA configuration */
757 lp->isa_config = eeprom_buff[ISA_CNF_OFFSET/2];
758 dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET/2] << 8;
760 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
761 /* store the initial memory base address */
762 for (i = 0; i < ETH_ALEN/2; i++) {
763 dev->dev_addr[i*2] = eeprom_buff[i];
764 dev->dev_addr[i*2+1] = eeprom_buff[i] >> 8;
767 printk(KERN_DEBUG "%s: new adapter_cnf: 0x%x\n",
768 dev->name, lp->adapter_cnf);
771 /* allow them to force multiple transceivers. If they force multiple, autosense */
774 if (lp->force & FORCE_RJ45) {lp->adapter_cnf |= A_CNF_10B_T; count++; }
775 if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_AUI; count++; }
776 if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_10B_2; count++; }
777 if (count > 1) {lp->adapter_cnf |= A_CNF_MEDIA_AUTO; }
778 else if (lp->force & FORCE_RJ45){lp->adapter_cnf |= A_CNF_MEDIA_10B_T; }
779 else if (lp->force & FORCE_AUI) {lp->adapter_cnf |= A_CNF_MEDIA_AUI; }
780 else if (lp->force & FORCE_BNC) {lp->adapter_cnf |= A_CNF_MEDIA_10B_2; }
784 printk(KERN_DEBUG "%s: after force 0x%x, adapter_cnf=0x%x\n",
785 dev->name, lp->force, lp->adapter_cnf);
787 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
789 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
791 /* FIXME: we don't set the Ethernet address on the command line. Use
792 ifconfig IFACE hw ether AABBCCDDEEFF */
794 printk(KERN_INFO "cs89x0 media %s%s%s",
795 (lp->adapter_cnf & A_CNF_10B_T)?"RJ-45,":"",
796 (lp->adapter_cnf & A_CNF_AUI)?"AUI,":"",
797 (lp->adapter_cnf & A_CNF_10B_2)?"BNC,":"");
799 lp->irq_map = 0xffff;
801 /* If this is a CS8900 then no pnp soft */
802 if (lp->chip_type != CS8900 &&
803 /* Check if the ISA IRQ has been set */
804 (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
805 (i != 0 && i < CS8920_NO_INTS))) {
809 i = lp->isa_config & INT_NO_MASK;
810 if (lp->chip_type == CS8900) {
811 #ifdef CONFIG_CS89x0_NONISA_IRQ
812 i = cs8900_irq_map[0];
814 /* Translate the IRQ using the IRQ mapping table. */
815 if (i >= ARRAY_SIZE(cs8900_irq_map))
816 printk("\ncs89x0: invalid ISA interrupt number %d\n", i);
818 i = cs8900_irq_map[i];
820 lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
822 int irq_map_buff[IRQ_MAP_LEN/2];
824 if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
826 irq_map_buff) >= 0) {
827 if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
828 lp->irq_map = (irq_map_buff[0]>>8) | (irq_map_buff[1] << 8);
836 printk(" IRQ %d", dev->irq);
840 get_dma_channel(dev);
841 printk(", DMA %d", dev->dma);
846 printk(", programmed I/O");
849 /* print the ethernet address. */
850 printk(", MAC %s", print_mac(mac, dev->dev_addr));
852 dev->open = net_open;
853 dev->stop = net_close;
854 dev->tx_timeout = net_timeout;
855 dev->watchdog_timeo = HZ;
856 dev->hard_start_xmit = net_send_packet;
857 dev->get_stats = net_get_stats;
858 dev->set_multicast_list = set_multicast_list;
859 dev->set_mac_address = set_mac_address;
860 #ifdef CONFIG_NET_POLL_CONTROLLER
861 dev->poll_controller = net_poll_controller;
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 dev->last_rx = jiffies;
1030 lp->stats.rx_packets++;
1031 lp->stats.rx_bytes += length;
1034 #endif /* ALLOW_DMA */
1036 void __init reset_chip(struct net_device *dev)
1038 #if !defined(CONFIG_MACH_MX31ADS)
1039 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1040 struct net_local *lp = netdev_priv(dev);
1041 int ioaddr = dev->base_addr;
1043 int reset_start_time;
1045 writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
1050 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1051 if (lp->chip_type != CS8900) {
1052 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1053 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAINT);
1054 outb(dev->irq, ioaddr + DATA_PORT);
1055 outb(0, ioaddr + DATA_PORT + 1);
1057 writeword(ioaddr, ADD_PORT, PP_CS8920_ISAMemB);
1058 outb((dev->mem_start >> 16) & 0xff, ioaddr + DATA_PORT);
1059 outb((dev->mem_start >> 8) & 0xff, ioaddr + DATA_PORT + 1);
1061 #endif /* IXDP2x01 */
1063 /* Wait until the chip is reset */
1064 reset_start_time = jiffies;
1065 while( (readreg(dev, PP_SelfST) & INIT_DONE) == 0 && jiffies - reset_start_time < 2)
1067 #endif /* !CONFIG_MACH_MX31ADS */
1072 control_dc_dc(struct net_device *dev, int on_not_off)
1074 struct net_local *lp = netdev_priv(dev);
1075 unsigned int selfcontrol;
1076 int timenow = jiffies;
1077 /* control the DC to DC convertor in the SelfControl register.
1078 Note: This is hooked up to a general purpose pin, might not
1079 always be a DC to DC convertor. */
1081 selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
1082 if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
1083 selfcontrol |= HCB1;
1085 selfcontrol &= ~HCB1;
1086 writereg(dev, PP_SelfCTL, selfcontrol);
1088 /* Wait for the DC/DC converter to power up - 500ms */
1089 while (jiffies - timenow < HZ)
1093 #define DETECTED_NONE 0
1094 #define DETECTED_RJ45H 1
1095 #define DETECTED_RJ45F 2
1096 #define DETECTED_AUI 3
1097 #define DETECTED_BNC 4
1100 detect_tp(struct net_device *dev)
1102 struct net_local *lp = netdev_priv(dev);
1103 int timenow = jiffies;
1106 if (net_debug > 1) printk("%s: Attempting TP\n", dev->name);
1108 /* If connected to another full duplex capable 10-Base-T card the link pulses
1109 seem to be lost when the auto detect bit in the LineCTL is set.
1110 To overcome this the auto detect bit will be cleared whilst testing the
1111 10-Base-T interface. This would not be necessary for the sparrow chip but
1112 is simpler to do it anyway. */
1113 writereg(dev, PP_LineCTL, lp->linectl &~ AUI_ONLY);
1114 control_dc_dc(dev, 0);
1116 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1117 for (timenow = jiffies; jiffies - timenow < 15; )
1119 if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
1120 return DETECTED_NONE;
1122 if (lp->chip_type == CS8900) {
1123 switch (lp->force & 0xf0) {
1126 printk("%s: cs8900 doesn't autonegotiate\n",dev->name);
1127 return DETECTED_NONE;
1129 /* CS8900 doesn't support AUTO, change to HALF*/
1131 lp->force &= ~FORCE_AUTO;
1132 lp->force |= FORCE_HALF;
1137 writereg(dev, PP_TestCTL, readreg(dev, PP_TestCTL) | FDX_8900);
1140 fdx = readreg(dev, PP_TestCTL) & FDX_8900;
1142 switch (lp->force & 0xf0) {
1144 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1147 lp->auto_neg_cnf = 0;
1150 lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
1154 writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
1156 if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
1157 printk(KERN_INFO "%s: negotiating duplex...\n",dev->name);
1158 while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
1159 if (jiffies - timenow > 4000) {
1160 printk(KERN_ERR "**** Full / half duplex auto-negotiation timed out ****\n");
1165 fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
1168 return DETECTED_RJ45F;
1170 return DETECTED_RJ45H;
1173 /* send a test packet - return true if carrier bits are ok */
1175 send_test_pkt(struct net_device *dev)
1177 char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1178 0, 46, /* A 46 in network order */
1179 0, 0, /* DSAP=0 & SSAP=0 fields */
1180 0xf3, 0 /* Control (Test Req + P bit set) */ };
1181 long timenow = jiffies;
1183 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
1185 memcpy(test_packet, dev->dev_addr, ETH_ALEN);
1186 memcpy(test_packet+ETH_ALEN, dev->dev_addr, ETH_ALEN);
1188 writeword(dev->base_addr, TX_CMD_PORT, TX_AFTER_ALL);
1189 writeword(dev->base_addr, TX_LEN_PORT, ETH_ZLEN);
1191 /* Test to see if the chip has allocated memory for the packet */
1192 while (jiffies - timenow < 5)
1193 if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
1195 if (jiffies - timenow >= 5)
1196 return 0; /* this shouldn't happen */
1198 /* Write the contents of the packet */
1199 writewords(dev->base_addr, TX_FRAME_PORT,test_packet,(ETH_ZLEN+1) >>1);
1201 if (net_debug > 1) printk("Sending test packet ");
1202 /* wait a couple of jiffies for packet to be received */
1203 for (timenow = jiffies; jiffies - timenow < 3; )
1205 if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
1206 if (net_debug > 1) printk("succeeded\n");
1209 if (net_debug > 1) printk("failed\n");
1215 detect_aui(struct net_device *dev)
1217 struct net_local *lp = netdev_priv(dev);
1219 if (net_debug > 1) printk("%s: Attempting AUI\n", dev->name);
1220 control_dc_dc(dev, 0);
1222 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1224 if (send_test_pkt(dev))
1225 return DETECTED_AUI;
1227 return DETECTED_NONE;
1231 detect_bnc(struct net_device *dev)
1233 struct net_local *lp = netdev_priv(dev);
1235 if (net_debug > 1) printk("%s: Attempting BNC\n", dev->name);
1236 control_dc_dc(dev, 1);
1238 writereg(dev, PP_LineCTL, (lp->linectl &~ AUTO_AUI_10BASET) | AUI_ONLY);
1240 if (send_test_pkt(dev))
1241 return DETECTED_BNC;
1243 return DETECTED_NONE;
1248 write_irq(struct net_device *dev, int chip_type, int irq)
1252 if (chip_type == CS8900) {
1253 /* Search the mapping table for the corresponding IRQ pin. */
1254 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
1255 if (cs8900_irq_map[i] == irq)
1258 if (i == ARRAY_SIZE(cs8900_irq_map))
1260 writereg(dev, PP_CS8900_ISAINT, i);
1262 writereg(dev, PP_CS8920_ISAINT, irq);
1266 /* Open/initialize the board. This is called (in the current kernel)
1267 sometime after booting when the 'ifconfig' program is run.
1269 This routine should set everything up anew at each open, even
1270 registers that "should" only need to be set once at boot, so that
1271 there is non-reboot way to recover if something goes wrong.
1274 /* AKPM: do we need to do any locking here? */
1277 net_open(struct net_device *dev)
1279 struct net_local *lp = netdev_priv(dev);
1284 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1286 /* Allow interrupts to be generated by the chip */
1287 /* Cirrus' release had this: */
1289 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1291 /* And 2.3.47 had this: */
1292 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1294 for (i = 2; i < CS8920_NO_INTS; i++) {
1295 if ((1 << i) & lp->irq_map) {
1296 if (request_irq(i, net_interrupt, 0, dev->name, dev) == 0) {
1298 write_irq(dev, lp->chip_type, i);
1299 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1305 if (i >= CS8920_NO_INTS) {
1306 writereg(dev, PP_BusCTL, 0); /* disable interrupts. */
1307 printk(KERN_ERR "cs89x0: can't get an interrupt\n");
1315 #ifndef CONFIG_CS89x0_NONISA_IRQ
1316 if (((1 << dev->irq) & lp->irq_map) == 0) {
1317 printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1318 dev->name, dev->irq, lp->irq_map);
1323 /* FIXME: Cirrus' release had this: */
1324 writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ );
1325 /* And 2.3.47 had this: */
1327 writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
1329 write_irq(dev, lp->chip_type, dev->irq);
1330 ret = request_irq(dev->irq, &net_interrupt, 0, dev->name, dev);
1333 printk(KERN_DEBUG "cs89x0: request_irq(%d) failed\n", dev->irq);
1340 if (lp->isa_config & ANY_ISA_DMA) {
1341 unsigned long flags;
1342 lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
1343 get_order(lp->dmasize * 1024));
1345 if (!lp->dma_buff) {
1346 printk(KERN_ERR "%s: cannot get %dK memory for DMA\n", dev->name, lp->dmasize);
1349 if (net_debug > 1) {
1350 printk( "%s: dma %lx %lx\n",
1352 (unsigned long)lp->dma_buff,
1353 (unsigned long)isa_virt_to_bus(lp->dma_buff));
1355 if ((unsigned long) lp->dma_buff >= MAX_DMA_ADDRESS ||
1356 !dma_page_eq(lp->dma_buff, lp->dma_buff+lp->dmasize*1024-1)) {
1357 printk(KERN_ERR "%s: not usable as DMA buffer\n", dev->name);
1360 memset(lp->dma_buff, 0, lp->dmasize * 1024); /* Why? */
1361 if (request_dma(dev->dma, dev->name)) {
1362 printk(KERN_ERR "%s: cannot get dma channel %d\n", dev->name, dev->dma);
1365 write_dma(dev, lp->chip_type, dev->dma);
1366 lp->rx_dma_ptr = lp->dma_buff;
1367 lp->end_dma_buff = lp->dma_buff + lp->dmasize*1024;
1368 spin_lock_irqsave(&lp->lock, flags);
1369 disable_dma(dev->dma);
1370 clear_dma_ff(dev->dma);
1371 set_dma_mode(dev->dma, 0x14); /* auto_init as well */
1372 set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
1373 set_dma_count(dev->dma, lp->dmasize*1024);
1374 enable_dma(dev->dma);
1375 spin_unlock_irqrestore(&lp->lock, flags);
1378 #endif /* ALLOW_DMA */
1380 /* set the Ethernet address */
1381 for (i=0; i < ETH_ALEN/2; i++)
1382 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1384 /* while we're testing the interface, leave interrupts disabled */
1385 writereg(dev, PP_BusCTL, MEMORY_ON);
1387 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1388 if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) && (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
1389 lp->linectl = LOW_RX_SQUELCH;
1393 /* check to make sure that they have the "right" hardware available */
1394 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1395 case A_CNF_MEDIA_10B_T: result = lp->adapter_cnf & A_CNF_10B_T; break;
1396 case A_CNF_MEDIA_AUI: result = lp->adapter_cnf & A_CNF_AUI; break;
1397 case A_CNF_MEDIA_10B_2: result = lp->adapter_cnf & A_CNF_10B_2; break;
1398 default: result = lp->adapter_cnf & (A_CNF_10B_T | A_CNF_AUI | A_CNF_10B_2);
1400 #ifdef CONFIG_ARCH_PNX010X
1401 result = A_CNF_10B_T;
1404 printk(KERN_ERR "%s: EEPROM is configured for unavailable media\n", dev->name);
1411 release_dma_buff(lp);
1413 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
1414 free_irq(dev->irq, dev);
1419 /* set the hardware to the configured choice */
1420 switch(lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
1421 case A_CNF_MEDIA_10B_T:
1422 result = detect_tp(dev);
1423 if (result==DETECTED_NONE) {
1424 printk(KERN_WARNING "%s: 10Base-T (RJ-45) has no cable\n", dev->name);
1425 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1426 result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
1429 case A_CNF_MEDIA_AUI:
1430 result = detect_aui(dev);
1431 if (result==DETECTED_NONE) {
1432 printk(KERN_WARNING "%s: 10Base-5 (AUI) has no cable\n", dev->name);
1433 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1434 result = DETECTED_AUI; /* Yes! I don't care if I see a carrrier */
1437 case A_CNF_MEDIA_10B_2:
1438 result = detect_bnc(dev);
1439 if (result==DETECTED_NONE) {
1440 printk(KERN_WARNING "%s: 10Base-2 (BNC) has no cable\n", dev->name);
1441 if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
1442 result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
1445 case A_CNF_MEDIA_AUTO:
1446 writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
1447 if (lp->adapter_cnf & A_CNF_10B_T)
1448 if ((result = detect_tp(dev)) != DETECTED_NONE)
1450 if (lp->adapter_cnf & A_CNF_AUI)
1451 if ((result = detect_aui(dev)) != DETECTED_NONE)
1453 if (lp->adapter_cnf & A_CNF_10B_2)
1454 if ((result = detect_bnc(dev)) != DETECTED_NONE)
1456 printk(KERN_ERR "%s: no media detected\n", dev->name);
1461 printk(KERN_ERR "%s: no network cable attached to configured media\n", dev->name);
1463 case DETECTED_RJ45H:
1464 printk(KERN_INFO "%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
1466 case DETECTED_RJ45F:
1467 printk(KERN_INFO "%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
1470 printk(KERN_INFO "%s: using 10Base-5 (AUI)\n", dev->name);
1473 printk(KERN_INFO "%s: using 10Base-2 (BNC)\n", dev->name);
1477 /* Turn on both receive and transmit operations */
1478 writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
1480 /* Receive only error free packets addressed to this card */
1482 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
1484 lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
1486 if (lp->isa_config & STREAM_TRANSFER)
1487 lp->curr_rx_cfg |= RX_STREAM_ENBL;
1491 writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
1493 writereg(dev, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL |
1494 TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL);
1496 writereg(dev, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL |
1500 TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL);
1502 /* now that we've got our act together, enable everything */
1503 writereg(dev, PP_BusCTL, ENABLE_IRQ
1504 | (dev->mem_start?MEMORY_ON : 0) /* turn memory on */
1509 netif_start_queue(dev);
1511 printk("cs89x0: net_open() succeeded\n");
1517 static void net_timeout(struct net_device *dev)
1519 /* If we get here, some higher level has decided we are broken.
1520 There should really be a "kick me" function call instead. */
1521 if (net_debug > 0) printk("%s: transmit timed out, %s?\n", dev->name,
1522 tx_done(dev) ? "IRQ conflict ?" : "network cable problem");
1523 /* Try to restart the adaptor. */
1524 netif_wake_queue(dev);
1527 static int net_send_packet(struct sk_buff *skb, struct net_device *dev)
1529 struct net_local *lp = netdev_priv(dev);
1531 if (net_debug > 3) {
1532 printk("%s: sent %d byte packet of type %x\n",
1533 dev->name, skb->len,
1534 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1537 /* keep the upload from being interrupted, since we
1538 ask the chip to start transmitting before the
1539 whole packet has been completely uploaded. */
1541 spin_lock_irq(&lp->lock);
1542 netif_stop_queue(dev);
1544 /* initiate a transmit sequence */
1545 writeword(dev->base_addr, TX_CMD_PORT, lp->send_cmd);
1546 writeword(dev->base_addr, TX_LEN_PORT, skb->len);
1548 /* Test to see if the chip has allocated memory for the packet */
1549 if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
1551 * Gasp! It hasn't. But that shouldn't happen since
1552 * we're waiting for TxOk, so return 1 and requeue this packet.
1555 spin_unlock_irq(&lp->lock);
1556 if (net_debug) printk("cs89x0: Tx buffer not free!\n");
1559 /* Write the contents of the packet */
1560 writewords(dev->base_addr, TX_FRAME_PORT,skb->data,(skb->len+1) >>1);
1561 spin_unlock_irq(&lp->lock);
1562 lp->stats.tx_bytes += skb->len;
1563 dev->trans_start = jiffies;
1564 dev_kfree_skb (skb);
1567 * We DO NOT call netif_wake_queue() here.
1568 * We also DO NOT call netif_start_queue().
1570 * Either of these would cause another bottom half run through
1571 * net_send_packet() before this packet has fully gone out. That causes
1572 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1573 * a dog. We just return and wait for the Tx completion interrupt handler
1574 * to restart the netdevice layer
1580 /* The typical workload of the driver:
1581 Handle the network interface interrupts. */
1583 static irqreturn_t net_interrupt(int irq, void *dev_id)
1585 struct net_device *dev = dev_id;
1586 struct net_local *lp;
1590 ioaddr = dev->base_addr;
1591 lp = netdev_priv(dev);
1593 /* we MUST read all the events out of the ISQ, otherwise we'll never
1594 get interrupted again. As a consequence, we can't have any limit
1595 on the number of times we loop in the interrupt handler. The
1596 hardware guarantees that eventually we'll run out of events. Of
1597 course, if you're on a slow machine, and packets are arriving
1598 faster than you can read them off, you're screwed. Hasta la
1600 while ((status = readword(dev->base_addr, ISQ_PORT))) {
1601 if (net_debug > 4)printk("%s: event=%04x\n", dev->name, status);
1603 switch(status & ISQ_EVENT_MASK) {
1604 case ISQ_RECEIVER_EVENT:
1605 /* Got a packet(s). */
1608 case ISQ_TRANSMITTER_EVENT:
1609 lp->stats.tx_packets++;
1610 netif_wake_queue(dev); /* Inform upper layers. */
1611 if ((status & ( TX_OK |
1615 TX_16_COL)) != TX_OK) {
1616 if ((status & TX_OK) == 0) lp->stats.tx_errors++;
1617 if (status & TX_LOST_CRS) lp->stats.tx_carrier_errors++;
1618 if (status & TX_SQE_ERROR) lp->stats.tx_heartbeat_errors++;
1619 if (status & TX_LATE_COL) lp->stats.tx_window_errors++;
1620 if (status & TX_16_COL) lp->stats.tx_aborted_errors++;
1623 case ISQ_BUFFER_EVENT:
1624 if (status & READY_FOR_TX) {
1625 /* we tried to transmit a packet earlier,
1626 but inexplicably ran out of buffers.
1627 That shouldn't happen since we only ever
1628 load one packet. Shrug. Do the right
1630 netif_wake_queue(dev); /* Inform upper layers. */
1632 if (status & TX_UNDERRUN) {
1633 if (net_debug > 0) printk("%s: transmit underrun\n", dev->name);
1634 lp->send_underrun++;
1635 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;
1636 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;
1637 /* transmit cycle is done, although
1638 frame wasn't transmitted - this
1639 avoids having to wait for the upper
1640 layers to timeout on us, in the
1641 event of a tx underrun */
1642 netif_wake_queue(dev); /* Inform upper layers. */
1645 if (lp->use_dma && (status & RX_DMA)) {
1646 int count = readreg(dev, PP_DmaFrameCnt);
1649 printk("%s: receiving %d DMA frames\n", dev->name, count);
1650 if (net_debug > 2 && count >1)
1651 printk("%s: receiving %d DMA frames\n", dev->name, count);
1654 count = readreg(dev, PP_DmaFrameCnt);
1655 if (net_debug > 2 && count > 0)
1656 printk("%s: continuing with %d DMA frames\n", dev->name, count);
1661 case ISQ_RX_MISS_EVENT:
1662 lp->stats.rx_missed_errors += (status >>6);
1664 case ISQ_TX_COL_EVENT:
1665 lp->stats.collisions += (status >>6);
1669 return IRQ_RETVAL(handled);
1673 count_rx_errors(int status, struct net_local *lp)
1675 lp->stats.rx_errors++;
1676 if (status & RX_RUNT) lp->stats.rx_length_errors++;
1677 if (status & RX_EXTRA_DATA) lp->stats.rx_length_errors++;
1678 if (status & RX_CRC_ERROR) if (!(status & (RX_EXTRA_DATA|RX_RUNT)))
1680 lp->stats.rx_crc_errors++;
1681 if (status & RX_DRIBBLE) lp->stats.rx_frame_errors++;
1685 /* We have a good packet(s), get it/them out of the buffers. */
1687 net_rx(struct net_device *dev)
1689 struct net_local *lp = netdev_priv(dev);
1690 struct sk_buff *skb;
1693 int ioaddr = dev->base_addr;
1694 status = readword(ioaddr, RX_FRAME_PORT);
1695 length = readword(ioaddr, RX_FRAME_PORT);
1697 if ((status & RX_OK) == 0) {
1698 count_rx_errors(status, lp);
1702 /* Malloc up new buffer. */
1703 skb = dev_alloc_skb(length + 2);
1705 #if 0 /* Again, this seems a cruel thing to do */
1706 printk(KERN_WARNING "%s: Memory squeeze, dropping packet.\n", dev->name);
1708 lp->stats.rx_dropped++;
1711 skb_reserve(skb, 2); /* longword align L3 header */
1713 readwords(ioaddr, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
1715 skb->data[length-1] = readword(ioaddr, RX_FRAME_PORT);
1717 if (net_debug > 3) {
1718 printk( "%s: received %d byte packet of type %x\n",
1720 (skb->data[ETH_ALEN+ETH_ALEN] << 8) | skb->data[ETH_ALEN+ETH_ALEN+1]);
1723 skb->protocol=eth_type_trans(skb,dev);
1725 dev->last_rx = jiffies;
1726 lp->stats.rx_packets++;
1727 lp->stats.rx_bytes += length;
1731 static void release_dma_buff(struct net_local *lp)
1734 free_pages((unsigned long)(lp->dma_buff), get_order(lp->dmasize * 1024));
1735 lp->dma_buff = NULL;
1740 /* The inverse routine to net_open(). */
1742 net_close(struct net_device *dev)
1745 struct net_local *lp = netdev_priv(dev);
1748 netif_stop_queue(dev);
1750 writereg(dev, PP_RxCFG, 0);
1751 writereg(dev, PP_TxCFG, 0);
1752 writereg(dev, PP_BufCFG, 0);
1753 writereg(dev, PP_BusCTL, 0);
1755 free_irq(dev->irq, dev);
1758 if (lp->use_dma && lp->dma) {
1760 release_dma_buff(lp);
1764 /* Update the statistics here. */
1768 /* Get the current statistics. This may be called with the card open or
1770 static struct net_device_stats *
1771 net_get_stats(struct net_device *dev)
1773 struct net_local *lp = netdev_priv(dev);
1774 unsigned long flags;
1776 spin_lock_irqsave(&lp->lock, flags);
1777 /* Update the statistics from the device registers. */
1778 lp->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
1779 lp->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
1780 spin_unlock_irqrestore(&lp->lock, flags);
1785 static void set_multicast_list(struct net_device *dev)
1787 struct net_local *lp = netdev_priv(dev);
1788 unsigned long flags;
1790 spin_lock_irqsave(&lp->lock, flags);
1791 if(dev->flags&IFF_PROMISC)
1793 lp->rx_mode = RX_ALL_ACCEPT;
1795 else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
1797 /* The multicast-accept list is initialized to accept-all, and we
1798 rely on higher-level filtering for now. */
1799 lp->rx_mode = RX_MULTCAST_ACCEPT;
1804 writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
1806 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1807 writereg(dev, PP_RxCFG, lp->curr_rx_cfg |
1808 (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));
1809 spin_unlock_irqrestore(&lp->lock, flags);
1813 static int set_mac_address(struct net_device *dev, void *p)
1816 struct sockaddr *addr = p;
1818 if (netif_running(dev))
1821 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1824 DECLARE_MAC_BUF(mac);
1825 printk("%s: Setting MAC address to %s.\n",
1826 dev->name, print_mac(mac, dev->dev_addr));
1828 /* set the Ethernet address */
1829 for (i=0; i < ETH_ALEN/2; i++)
1830 writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));
1837 static struct net_device *dev_cs89x0;
1840 * Support the 'debug' module parm even if we're compiled for non-debug to
1841 * avoid breaking someone's startup scripts
1847 static char media[8];
1848 static int duplex=-1;
1850 static int use_dma; /* These generate unused var warnings if ALLOW_DMA = 0 */
1852 static int dmasize=16; /* or 64 */
1854 module_param(io, int, 0);
1855 module_param(irq, int, 0);
1856 module_param(debug, int, 0);
1857 module_param_string(media, media, sizeof(media), 0);
1858 module_param(duplex, int, 0);
1859 module_param(dma , int, 0);
1860 module_param(dmasize , int, 0);
1861 module_param(use_dma , int, 0);
1862 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
1863 MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
1865 MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
1867 MODULE_PARM_DESC(debug, "(ignored)");
1869 MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1870 /* No other value than -1 for duplex seems to be currently interpreted */
1871 MODULE_PARM_DESC(duplex, "(ignored)");
1873 MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
1874 MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1875 MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
1877 MODULE_PARM_DESC(dma , "(ignored)");
1878 MODULE_PARM_DESC(dmasize , "(ignored)");
1879 MODULE_PARM_DESC(use_dma , "(ignored)");
1882 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton <andrewm@uow.edu.au>");
1883 MODULE_LICENSE("GPL");
1887 * media=t - specify media type
1891 * duplex=0 - specify forced half/full/autonegotiate duplex
1892 * debug=# - debug level
1895 * Default Chip Configuration:
1896 * DMA Burst = enabled
1897 * IOCHRDY Enabled = enabled
1899 * CS8900 defaults to half-duplex if not specified on command-line
1900 * CS8920 defaults to autoneg if not specified on command-line
1901 * Use reset defaults for other config parameters
1904 * media type specified is supported (circuitry is present)
1905 * if memory address is > 1MB, then required mem decode hw is present
1906 * if 10B-2, then agent other than driver will enable DC/DC converter
1907 (hw or software util)
1912 int __init init_module(void)
1914 struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
1915 struct net_local *lp;
1927 dev->base_addr = io;
1928 lp = netdev_priv(dev);
1932 lp->use_dma = use_dma;
1934 lp->dmasize = dmasize;
1938 spin_lock_init(&lp->lock);
1940 /* boy, they'd better get these right */
1941 if (!strcmp(media, "rj45"))
1942 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1943 else if (!strcmp(media, "aui"))
1944 lp->adapter_cnf = A_CNF_MEDIA_AUI | A_CNF_AUI;
1945 else if (!strcmp(media, "bnc"))
1946 lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
1948 lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
1951 lp->auto_neg_cnf = AUTO_NEG_ENABLE;
1954 printk(KERN_ERR "cs89x0.c: Module autoprobing not allowed.\n");
1955 printk(KERN_ERR "cs89x0.c: Append io=0xNNN\n");
1958 } else if (io <= 0x1ff) {
1964 if (use_dma && dmasize != 16 && dmasize != 64) {
1965 printk(KERN_ERR "cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize);
1970 ret = cs89x0_probe1(dev, io, 1);
1982 cleanup_module(void)
1984 unregister_netdev(dev_cs89x0);
1985 writeword(dev_cs89x0->base_addr, ADD_PORT, PP_ChipID);
1986 release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
1987 free_netdev(dev_cs89x0);
1993 * version-control: t
1994 * kept-new-versions: 5