1 /* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
6 Written 1996 by Russell Nelson, with reference to skeleton.c
7 written 1993-1994 by Donald Becker.
9 This software may be used and distributed according to the terms
10 of the GNU General Public License, incorporated herein by reference.
12 The author may be reached at nelson@crynwr.com, Crynwr
13 Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
17 Mike Cruse : mcruse@cti-ltd.com
18 : Changes for Linux 2.0 compatibility.
19 : Added dev_id parameter in net_interrupt(),
20 : request_irq() and free_irq(). Just NULL for now.
22 Mike Cruse : Added MOD_INC_USE_COUNT and MOD_DEC_USE_COUNT macros
23 : in net_open() and net_close() so kerneld would know
24 : that the module is in use and wouldn't eject the
27 Mike Cruse : Rewrote init_module() and cleanup_module using 8390.c
28 : as an example. Disabled autoprobing in init_module(),
29 : not a good thing to do to other devices while Linux
30 : is running from all accounts.
32 Russ Nelson : Jul 13 1998. Added RxOnly DMA support.
34 Melody Lee : Aug 10 1999. Changes for Linux 2.2.5 compatibility.
35 : email: ethernet@crystal.cirrus.com
37 Alan Cox : Removed 1.2 support, added 2.1 extra counters.
39 Andrew Morton : Kernel 2.3.48
40 : Handle kmalloc() failures
41 : Other resource allocation fixes
43 : Integrate Russ Nelson's ALLOW_DMA functionality back in.
44 : If ALLOW_DMA is true, make DMA runtime selectable
45 : Folded in changes from Cirrus (Melody Lee
46 : <klee@crystal.cirrus.com>)
47 : Don't call netif_wake_queue() in net_send_packet()
48 : Fixed an out-of-mem bug in dma_rx()
49 : Updated Documentation/networking/cs89x0.txt
51 Andrew Morton : Kernel 2.3.99-pre1
52 : Use skb_reserve to longword align IP header (two places)
53 : Remove a delay loop from dma_rx()
54 : Replace '100' with HZ
55 : Clean up a couple of skb API abuses
56 : Added 'cs89x0_dma=N' kernel boot option
57 : Correctly initialise lp->lock in non-module compile
59 Andrew Morton : Kernel 2.3.99-pre4-1
60 : MOD_INC/DEC race fix (see
61 : http://www.uwsg.indiana.edu/hypermail/linux/kernel/0003.3/1532.html)
63 Andrew Morton : Kernel 2.4.0-test7-pre2
64 : Enhanced EEPROM support to cover more devices,
65 : abstracted IRQ mapping to support CONFIG_ARCH_CLPS7500 arch
66 : (Jason Gunthorpe <jgg@ualberta.ca>)
68 Andrew Morton : Kernel 2.4.0-test11-pre4
69 : Use dev->name in request_*() (Andrey Panin)
70 : Fix an error-path memleak in init_module()
71 : Preserve return value from request_irq()
72 : Fix type of `media' module parm (Keith Owens)
73 : Use SET_MODULE_OWNER()
74 : Tidied up strange request_irq() abuse in net_open().
76 Andrew Morton : Kernel 2.4.3-pre1
77 : Request correct number of pages for DMA (Hugh Dickens)
78 : Select PP_ChipID _after_ unregister_netdev in cleanup_module()
79 : because unregister_netdev() calls get_stats.
80 : Make `version[]' __initdata
81 : Uninlined the read/write reg/word functions.
83 Oskar Schirmer : oskar@scara.com
84 : HiCO.SH4 (superh) support added (irq#1, cs89x0_media=)
86 Deepak Saxena : dsaxena@plexity.net
87 : Intel IXDP2x01 (XScale ixp2x00 NPU) platform support
89 Dmitry Pervushin : dpervushin@ru.mvista.com
90 : PNX010X platform support
92 Deepak Saxena : dsaxena@plexity.net
93 : Intel IXDP2351 platform support
95 Dmitry Pervushin : dpervushin@ru.mvista.com
96 : PNX010X platform support
100 /* Always include 'config.h' first in case the user wants to turn on
101 or override something. */
102 #include <linux/module.h>
105 * Set this to zero to disable DMA code
107 * Note that even if DMA is turned off we still support the 'dma' and 'use_dma'
108 * module options so we don't break any startup scripts.
110 #ifndef CONFIG_ISA_DMA_API
117 * Set this to zero to remove all the debug statements via
118 * dead code elimination
125 Crynwr packet driver epktisa.
127 Crystal Semiconductor data sheets.
131 #include <linux/errno.h>
132 #include <linux/netdevice.h>
133 #include <linux/etherdevice.h>
134 #include <linux/kernel.h>
135 #include <linux/types.h>
136 #include <linux/fcntl.h>
137 #include <linux/interrupt.h>
138 #include <linux/ioport.h>
139 #include <linux/in.h>
140 #include <linux/skbuff.h>
141 #include <linux/slab.h>
142 #include <linux/spinlock.h>
143 #include <linux/string.h>
144 #include <linux/init.h>
145 #include <linux/bitops.h>
146 #include <linux/delay.h>
148 #include <asm/system.h>
157 static char version
[] __initdata
=
158 "cs89x0.c: v2.4.3-pre1 Russell Nelson <nelson@crynwr.com>, Andrew Morton\n";
160 #define DRV_NAME "cs89x0"
162 /* First, a few definitions that the brave might change.
163 A zero-terminated list of I/O addresses to be probed. Some special flags..
164 Addr & 1 = Read back the address port, look for signature and reset
165 the page window before probing
166 Addr & 3 = Reset the page window and probe
167 The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
168 but it is possible that a Cirrus board could be plugged into the ISA
170 /* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
171 them to system IRQ numbers. This mapping is card specific and is set to
172 the configuration of the Cirrus Eval board for this chip. */
173 #ifdef CONFIG_ARCH_CLPS7500
174 static unsigned int netcard_portlist
[] __used __initdata
=
175 { 0x80090303, 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
176 static unsigned int cs8900_irq_map
[] = {12,0,0,0};
177 #elif defined(CONFIG_SH_HICOSH4)
178 static unsigned int netcard_portlist
[] __used __initdata
=
180 static unsigned int cs8900_irq_map
[] = {1,0,0,0};
181 #elif defined(CONFIG_MACH_IXDP2351)
182 static unsigned int netcard_portlist
[] __used __initdata
= {IXDP2351_VIRT_CS8900_BASE
, 0};
183 static unsigned int cs8900_irq_map
[] = {IRQ_IXDP2351_CS8900
, 0, 0, 0};
185 #elif defined(CONFIG_ARCH_IXDP2X01)
187 static unsigned int netcard_portlist
[] __used __initdata
= {IXDP2X01_CS8900_VIRT_BASE
, 0};
188 static unsigned int cs8900_irq_map
[] = {IRQ_IXDP2X01_CS8900
, 0, 0, 0};
189 #elif defined(CONFIG_ARCH_PNX010X)
191 #include <mach/gpio.h>
192 #define CIRRUS_DEFAULT_BASE IO_ADDRESS(EXT_STATIC2_s0_BASE + 0x200000) /* = Physical address 0x48200000 */
193 #define CIRRUS_DEFAULT_IRQ VH_INTC_INT_NUM_CASCADED_INTERRUPT_1 /* Event inputs bank 1 - ID 35/bit 3 */
194 static unsigned int netcard_portlist
[] __used __initdata
= {CIRRUS_DEFAULT_BASE
, 0};
195 static unsigned int cs8900_irq_map
[] = {CIRRUS_DEFAULT_IRQ
, 0, 0, 0};
196 #elif defined(CONFIG_MACH_MX31ADS)
197 #include <mach/board-mx31ads.h>
198 static unsigned int netcard_portlist
[] __used __initdata
= {
199 PBC_BASE_ADDRESS
+ PBC_CS8900A_IOBASE
+ 0x300, 0
201 static unsigned cs8900_irq_map
[] = {EXPIO_INT_ENET_INT
, 0, 0, 0};
203 static unsigned int netcard_portlist
[] __used __initdata
=
204 { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
205 static unsigned int cs8900_irq_map
[] = {10,11,12,5};
209 static unsigned int net_debug
= DEBUGGING
;
211 #define net_debug 0 /* gcc will remove all the debug code for us */
214 /* The number of low I/O ports used by the ethercard. */
215 #define NETCARD_IO_EXTENT 16
217 /* we allow the user to override various values normally set in the EEPROM */
218 #define FORCE_RJ45 0x0001 /* pick one of these three */
219 #define FORCE_AUI 0x0002
220 #define FORCE_BNC 0x0004
222 #define FORCE_AUTO 0x0010 /* pick one of these three */
223 #define FORCE_HALF 0x0020
224 #define FORCE_FULL 0x0030
226 /* Information that need to be kept for each board. */
228 struct net_device_stats stats
;
229 int chip_type
; /* one of: CS8900, CS8920, CS8920M */
230 char chip_revision
; /* revision letter of the chip ('A'...) */
231 int send_cmd
; /* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
232 int auto_neg_cnf
; /* auto-negotiation word from EEPROM */
233 int adapter_cnf
; /* adapter configuration from EEPROM */
234 int isa_config
; /* ISA configuration from EEPROM */
235 int irq_map
; /* IRQ map from EEPROM */
236 int rx_mode
; /* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
237 int curr_rx_cfg
; /* a copy of PP_RxCFG */
238 int linectl
; /* either 0 or LOW_RX_SQUELCH, depending on configuration. */
239 int send_underrun
; /* keep track of how many underruns in a row we get */
240 int force
; /* force various values; see FORCE* above. */
243 int use_dma
; /* Flag: we're using dma */
244 int dma
; /* DMA channel */
245 int dmasize
; /* 16 or 64 */
246 unsigned char *dma_buff
; /* points to the beginning of the buffer */
247 unsigned char *end_dma_buff
; /* points to the end of the buffer */
248 unsigned char *rx_dma_ptr
; /* points to the next packet */
252 /* Index to functions, as function prototypes. */
254 static int cs89x0_probe1(struct net_device
*dev
, int ioaddr
, int modular
);
255 static int net_open(struct net_device
*dev
);
256 static int net_send_packet(struct sk_buff
*skb
, struct net_device
*dev
);
257 static irqreturn_t
net_interrupt(int irq
, void *dev_id
);
258 static void set_multicast_list(struct net_device
*dev
);
259 static void net_timeout(struct net_device
*dev
);
260 static void net_rx(struct net_device
*dev
);
261 static int net_close(struct net_device
*dev
);
262 static struct net_device_stats
*net_get_stats(struct net_device
*dev
);
263 static void reset_chip(struct net_device
*dev
);
264 static int get_eeprom_data(struct net_device
*dev
, int off
, int len
, int *buffer
);
265 static int get_eeprom_cksum(int off
, int len
, int *buffer
);
266 static int set_mac_address(struct net_device
*dev
, void *addr
);
267 static void count_rx_errors(int status
, struct net_local
*lp
);
268 #ifdef CONFIG_NET_POLL_CONTROLLER
269 static void net_poll_controller(struct net_device
*dev
);
272 static void get_dma_channel(struct net_device
*dev
);
273 static void release_dma_buff(struct net_local
*lp
);
276 /* Example routines you must write ;->. */
277 #define tx_done(dev) 1
280 * Permit 'cs89x0_dma=N' in the kernel boot environment
282 #if !defined(MODULE) && (ALLOW_DMA != 0)
283 static int g_cs89x0_dma
;
285 static int __init
dma_fn(char *str
)
287 g_cs89x0_dma
= simple_strtol(str
,NULL
,0);
291 __setup("cs89x0_dma=", dma_fn
);
292 #endif /* !defined(MODULE) && (ALLOW_DMA != 0) */
295 static int g_cs89x0_media__force
;
297 static int __init
media_fn(char *str
)
299 if (!strcmp(str
, "rj45")) g_cs89x0_media__force
= FORCE_RJ45
;
300 else if (!strcmp(str
, "aui")) g_cs89x0_media__force
= FORCE_AUI
;
301 else if (!strcmp(str
, "bnc")) g_cs89x0_media__force
= FORCE_BNC
;
305 __setup("cs89x0_media=", media_fn
);
308 /* Check for a network adaptor of this type, and return '0' iff one exists.
309 If dev->base_addr == 0, probe all likely locations.
310 If dev->base_addr == 1, always return failure.
311 If dev->base_addr == 2, allocate space for the device and return success
312 (detachable devices only).
316 struct net_device
* __init
cs89x0_probe(int unit
)
318 struct net_device
*dev
= alloc_etherdev(sizeof(struct net_local
));
325 return ERR_PTR(-ENODEV
);
327 sprintf(dev
->name
, "eth%d", unit
);
328 netdev_boot_setup_check(dev
);
333 printk("cs89x0:cs89x0_probe(0x%x)\n", io
);
335 if (io
> 0x1ff) { /* Check a single specified location. */
336 err
= cs89x0_probe1(dev
, io
, 0);
337 } else if (io
!= 0) { /* Don't probe at all. */
340 for (port
= netcard_portlist
; *port
; port
++) {
341 if (cs89x0_probe1(dev
, *port
, 0) == 0)
353 printk(KERN_WARNING
"cs89x0: no cs8900 or cs8920 detected. Be sure to disable PnP with SETUP\n");
358 #if defined(CONFIG_MACH_IXDP2351)
360 readword(unsigned long base_addr
, int portno
)
362 return __raw_readw(base_addr
+ (portno
<< 1));
366 writeword(unsigned long base_addr
, int portno
, u16 value
)
368 __raw_writew(value
, base_addr
+ (portno
<< 1));
370 #elif defined(CONFIG_ARCH_IXDP2X01)
372 readword(unsigned long base_addr
, int portno
)
374 return __raw_readl(base_addr
+ (portno
<< 1));
378 writeword(unsigned long base_addr
, int portno
, u16 value
)
380 __raw_writel(value
, base_addr
+ (portno
<< 1));
382 #elif defined(CONFIG_ARCH_PNX010X)
384 readword(unsigned long base_addr
, int portno
)
386 return inw(base_addr
+ (portno
<< 1));
390 writeword(unsigned long base_addr
, int portno
, u16 value
)
392 outw(value
, base_addr
+ (portno
<< 1));
396 readword(unsigned long base_addr
, int portno
)
398 return inw(base_addr
+ portno
);
402 writeword(unsigned long base_addr
, int portno
, u16 value
)
404 outw(value
, base_addr
+ portno
);
409 readwords(unsigned long base_addr
, int portno
, void *buf
, int length
)
411 u8
*buf8
= (u8
*)buf
;
416 tmp16
= readword(base_addr
, portno
);
418 *buf8
++ = (u8
)(tmp16
>> 8);
423 writewords(unsigned long base_addr
, int portno
, void *buf
, int length
)
425 u8
*buf8
= (u8
*)buf
;
431 tmp16
|= (*buf8
++) << 8;
432 writeword(base_addr
, portno
, tmp16
);
437 readreg(struct net_device
*dev
, u16 regno
)
439 writeword(dev
->base_addr
, ADD_PORT
, regno
);
440 return readword(dev
->base_addr
, DATA_PORT
);
444 writereg(struct net_device
*dev
, u16 regno
, u16 value
)
446 writeword(dev
->base_addr
, ADD_PORT
, regno
);
447 writeword(dev
->base_addr
, DATA_PORT
, value
);
451 wait_eeprom_ready(struct net_device
*dev
)
453 int timeout
= jiffies
;
454 /* check to see if the EEPROM is ready, a timeout is used -
455 just in case EEPROM is ready when SI_BUSY in the
456 PP_SelfST is clear */
457 while(readreg(dev
, PP_SelfST
) & SI_BUSY
)
458 if (jiffies
- timeout
>= 40)
464 get_eeprom_data(struct net_device
*dev
, int off
, int len
, int *buffer
)
468 if (net_debug
> 3) printk("EEPROM data from %x for %x:\n",off
,len
);
469 for (i
= 0; i
< len
; i
++) {
470 if (wait_eeprom_ready(dev
) < 0) return -1;
471 /* Now send the EEPROM read command and EEPROM location to read */
472 writereg(dev
, PP_EECMD
, (off
+ i
) | EEPROM_READ_CMD
);
473 if (wait_eeprom_ready(dev
) < 0) return -1;
474 buffer
[i
] = readreg(dev
, PP_EEData
);
475 if (net_debug
> 3) printk("%04x ", buffer
[i
]);
477 if (net_debug
> 3) printk("\n");
482 get_eeprom_cksum(int off
, int len
, int *buffer
)
487 for (i
= 0; i
< len
; i
++)
495 #ifdef CONFIG_NET_POLL_CONTROLLER
497 * Polling receive - used by netconsole and other diagnostic tools
498 * to allow network i/o with interrupts disabled.
500 static void net_poll_controller(struct net_device
*dev
)
502 disable_irq(dev
->irq
);
503 net_interrupt(dev
->irq
, dev
);
504 enable_irq(dev
->irq
);
508 /* This is the real probe routine. Linux has a history of friendly device
509 probes on the ISA bus. A good device probes avoids doing writes, and
510 verifies that the correct device exists and functions.
515 cs89x0_probe1(struct net_device
*dev
, int ioaddr
, int modular
)
517 struct net_local
*lp
= netdev_priv(dev
);
518 static unsigned version_printed
;
521 unsigned rev_type
= 0;
522 int eeprom_buff
[CHKSUM_LEN
];
525 /* Initialize the device structure. */
527 memset(lp
, 0, sizeof(*lp
));
528 spin_lock_init(&lp
->lock
);
533 lp
->dma
= g_cs89x0_dma
;
534 lp
->dmasize
= 16; /* Could make this an option... */
537 lp
->force
= g_cs89x0_media__force
;
541 #ifdef CONFIG_ARCH_PNX010X
544 /* Map GPIO registers for the pins connected to the CS8900a. */
545 if (map_cirrus_gpio() < 0)
550 /* Map event-router registers. */
551 if (map_event_router() < 0)
557 unmap_event_router();
559 dev
->base_addr
= ioaddr
;
561 for (i
= 0 ; i
< 3 ; i
++)
565 /* Grab the region so we can find another board if autoIRQ fails. */
566 /* WTF is going on here? */
567 if (!request_region(ioaddr
& ~3, NETCARD_IO_EXTENT
, DRV_NAME
)) {
568 printk(KERN_ERR
"%s: request_region(0x%x, 0x%x) failed\n",
569 DRV_NAME
, ioaddr
, NETCARD_IO_EXTENT
);
574 #ifdef CONFIG_SH_HICOSH4
575 /* truely reset the chip */
576 writeword(ioaddr
, ADD_PORT
, 0x0114);
577 writeword(ioaddr
, DATA_PORT
, 0x0040);
580 /* if they give us an odd I/O address, then do ONE write to
581 the address port, to get it back to address zero, where we
582 expect to find the EISA signature word. An IO with a base of 0x3
583 will skip the test for the ADD_PORT. */
586 printk(KERN_INFO
"%s: odd ioaddr 0x%x\n", dev
->name
, ioaddr
);
587 if ((ioaddr
& 2) != 2)
588 if ((readword(ioaddr
& ~3, ADD_PORT
) & ADD_MASK
) != ADD_SIG
) {
589 printk(KERN_ERR
"%s: bad signature 0x%x\n",
590 dev
->name
, readword(ioaddr
& ~3, ADD_PORT
));
597 printk(KERN_DEBUG
"PP_addr at %x[%x]: 0x%x\n",
598 ioaddr
, ADD_PORT
, readword(ioaddr
, ADD_PORT
));
599 writeword(ioaddr
, ADD_PORT
, PP_ChipID
);
601 tmp
= readword(ioaddr
, DATA_PORT
);
602 if (tmp
!= CHIP_EISA_ID_SIG
) {
603 printk(KERN_DEBUG
"%s: incorrect signature at %x[%x]: 0x%x!="
604 CHIP_EISA_ID_SIG_STR
"\n",
605 dev
->name
, ioaddr
, DATA_PORT
, tmp
);
610 /* Fill in the 'dev' fields. */
611 dev
->base_addr
= ioaddr
;
613 /* get the chip type */
614 rev_type
= readreg(dev
, PRODUCT_ID_ADD
);
615 lp
->chip_type
= rev_type
&~ REVISON_BITS
;
616 lp
->chip_revision
= ((rev_type
& REVISON_BITS
) >> 8) + 'A';
618 /* Check the chip type and revision in order to set the correct send command
619 CS8920 revision C and CS8900 revision F can use the faster send. */
620 lp
->send_cmd
= TX_AFTER_381
;
621 if (lp
->chip_type
== CS8900
&& lp
->chip_revision
>= 'F')
622 lp
->send_cmd
= TX_NOW
;
623 if (lp
->chip_type
!= CS8900
&& lp
->chip_revision
>= 'C')
624 lp
->send_cmd
= TX_NOW
;
626 if (net_debug
&& version_printed
++ == 0)
629 printk(KERN_INFO
"%s: cs89%c0%s rev %c found at %#3lx ",
631 lp
->chip_type
==CS8900
?'0':'2',
632 lp
->chip_type
==CS8920M
?"M":"",
638 /* Here we read the current configuration of the chip. If there
639 is no Extended EEPROM then the idea is to not disturb the chip
640 configuration, it should have been correctly setup by automatic
641 EEPROM read on reset. So, if the chip says it read the EEPROM
642 the driver will always do *something* instead of complain that
645 #ifdef CONFIG_SH_HICOSH4
647 /* For the HiCO.SH4 board, things are different: we don't
648 have EEPROM, but there is some data in flash, so we go
649 get it there directly (MAC). */
652 if (((* (volatile __u32
*) 0xa0013ff0) & 0x00ffffff)
654 confd
= (__u16
*) 0xa0013fc0;
656 confd
= (__u16
*) 0xa001ffc0;
658 cnt
= (*confd
++ & 0x00ff) >> 1;
662 switch (j
& 0x0fff) {
664 for (i
= 0; i
< ETH_ALEN
/2; i
++) {
665 dev
->dev_addr
[i
*2] = confd
[i
] & 0xFF;
666 dev
->dev_addr
[i
*2+1] = confd
[i
] >> 8;
677 if ((readreg(dev
, PP_SelfST
) & (EEPROM_OK
| EEPROM_PRESENT
)) ==
678 (EEPROM_OK
|EEPROM_PRESENT
)) {
680 for (i
=0; i
< ETH_ALEN
/2; i
++) {
682 Addr
= readreg(dev
, PP_IA
+i
*2);
683 dev
->dev_addr
[i
*2] = Addr
& 0xFF;
684 dev
->dev_addr
[i
*2+1] = Addr
>> 8;
687 /* Load the Adapter Configuration.
688 Note: Barring any more specific information from some
689 other source (ie EEPROM+Schematics), we would not know
690 how to operate a 10Base2 interface on the AUI port.
691 However, since we do read the status of HCB1 and use
692 settings that always result in calls to control_dc_dc(dev,0)
693 a BNC interface should work if the enable pin
694 (dc/dc converter) is on HCB1. It will be called AUI
698 i
= readreg(dev
, PP_LineCTL
);
699 /* Preserve the setting of the HCB1 pin. */
700 if ((i
& (HCB1
| HCB1_ENBL
)) == (HCB1
| HCB1_ENBL
))
701 lp
->adapter_cnf
|= A_CNF_DC_DC_POLARITY
;
702 /* Save the sqelch bit */
703 if ((i
& LOW_RX_SQUELCH
) == LOW_RX_SQUELCH
)
704 lp
->adapter_cnf
|= A_CNF_EXTND_10B_2
| A_CNF_LOW_RX_SQUELCH
;
705 /* Check if the card is in 10Base-t only mode */
706 if ((i
& (AUI_ONLY
| AUTO_AUI_10BASET
)) == 0)
707 lp
->adapter_cnf
|= A_CNF_10B_T
| A_CNF_MEDIA_10B_T
;
708 /* Check if the card is in AUI only mode */
709 if ((i
& (AUI_ONLY
| AUTO_AUI_10BASET
)) == AUI_ONLY
)
710 lp
->adapter_cnf
|= A_CNF_AUI
| A_CNF_MEDIA_AUI
;
711 /* Check if the card is in Auto mode. */
712 if ((i
& (AUI_ONLY
| AUTO_AUI_10BASET
)) == AUTO_AUI_10BASET
)
713 lp
->adapter_cnf
|= A_CNF_AUI
| A_CNF_10B_T
|
714 A_CNF_MEDIA_AUI
| A_CNF_MEDIA_10B_T
| A_CNF_MEDIA_AUTO
;
717 printk(KERN_INFO
"%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
718 dev
->name
, i
, lp
->adapter_cnf
);
720 /* IRQ. Other chips already probe, see below. */
721 if (lp
->chip_type
== CS8900
)
722 lp
->isa_config
= readreg(dev
, PP_CS8900_ISAINT
) & INT_NO_MASK
;
724 printk( "[Cirrus EEPROM] ");
729 /* First check to see if an EEPROM is attached. */
730 #ifdef CONFIG_SH_HICOSH4 /* no EEPROM on HiCO, don't hazzle with it here */
732 printk(KERN_NOTICE
"cs89x0: No EEPROM on HiCO.SH4\n");
735 if ((readreg(dev
, PP_SelfST
) & EEPROM_PRESENT
) == 0)
736 printk(KERN_WARNING
"cs89x0: No EEPROM, relying on command line....\n");
737 else if (get_eeprom_data(dev
, START_EEPROM_DATA
,CHKSUM_LEN
,eeprom_buff
) < 0) {
738 printk(KERN_WARNING
"\ncs89x0: EEPROM read failed, relying on command line.\n");
739 } else if (get_eeprom_cksum(START_EEPROM_DATA
,CHKSUM_LEN
,eeprom_buff
) < 0) {
740 /* Check if the chip was able to read its own configuration starting
742 if ((readreg(dev
, PP_SelfST
) & (EEPROM_OK
| EEPROM_PRESENT
)) !=
743 (EEPROM_OK
|EEPROM_PRESENT
))
744 printk(KERN_WARNING
"cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
747 /* This reads an extended EEPROM that is not documented
748 in the CS8900 datasheet. */
750 /* get transmission control word but keep the autonegotiation bits */
751 if (!lp
->auto_neg_cnf
) lp
->auto_neg_cnf
= eeprom_buff
[AUTO_NEG_CNF_OFFSET
/2];
752 /* Store adapter configuration */
753 if (!lp
->adapter_cnf
) lp
->adapter_cnf
= eeprom_buff
[ADAPTER_CNF_OFFSET
/2];
754 /* Store ISA configuration */
755 lp
->isa_config
= eeprom_buff
[ISA_CNF_OFFSET
/2];
756 dev
->mem_start
= eeprom_buff
[PACKET_PAGE_OFFSET
/2] << 8;
758 /* eeprom_buff has 32-bit ints, so we can't just memcpy it */
759 /* store the initial memory base address */
760 for (i
= 0; i
< ETH_ALEN
/2; i
++) {
761 dev
->dev_addr
[i
*2] = eeprom_buff
[i
];
762 dev
->dev_addr
[i
*2+1] = eeprom_buff
[i
] >> 8;
765 printk(KERN_DEBUG
"%s: new adapter_cnf: 0x%x\n",
766 dev
->name
, lp
->adapter_cnf
);
769 /* allow them to force multiple transceivers. If they force multiple, autosense */
772 if (lp
->force
& FORCE_RJ45
) {lp
->adapter_cnf
|= A_CNF_10B_T
; count
++; }
773 if (lp
->force
& FORCE_AUI
) {lp
->adapter_cnf
|= A_CNF_AUI
; count
++; }
774 if (lp
->force
& FORCE_BNC
) {lp
->adapter_cnf
|= A_CNF_10B_2
; count
++; }
775 if (count
> 1) {lp
->adapter_cnf
|= A_CNF_MEDIA_AUTO
; }
776 else if (lp
->force
& FORCE_RJ45
){lp
->adapter_cnf
|= A_CNF_MEDIA_10B_T
; }
777 else if (lp
->force
& FORCE_AUI
) {lp
->adapter_cnf
|= A_CNF_MEDIA_AUI
; }
778 else if (lp
->force
& FORCE_BNC
) {lp
->adapter_cnf
|= A_CNF_MEDIA_10B_2
; }
782 printk(KERN_DEBUG
"%s: after force 0x%x, adapter_cnf=0x%x\n",
783 dev
->name
, lp
->force
, lp
->adapter_cnf
);
785 /* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
787 /* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
789 /* FIXME: we don't set the Ethernet address on the command line. Use
790 ifconfig IFACE hw ether AABBCCDDEEFF */
792 printk(KERN_INFO
"cs89x0 media %s%s%s",
793 (lp
->adapter_cnf
& A_CNF_10B_T
)?"RJ-45,":"",
794 (lp
->adapter_cnf
& A_CNF_AUI
)?"AUI,":"",
795 (lp
->adapter_cnf
& A_CNF_10B_2
)?"BNC,":"");
797 lp
->irq_map
= 0xffff;
799 /* If this is a CS8900 then no pnp soft */
800 if (lp
->chip_type
!= CS8900
&&
801 /* Check if the ISA IRQ has been set */
802 (i
= readreg(dev
, PP_CS8920_ISAINT
) & 0xff,
803 (i
!= 0 && i
< CS8920_NO_INTS
))) {
807 i
= lp
->isa_config
& INT_NO_MASK
;
808 if (lp
->chip_type
== CS8900
) {
809 #ifdef CONFIG_CS89x0_NONISA_IRQ
810 i
= cs8900_irq_map
[0];
812 /* Translate the IRQ using the IRQ mapping table. */
813 if (i
>= ARRAY_SIZE(cs8900_irq_map
))
814 printk("\ncs89x0: invalid ISA interrupt number %d\n", i
);
816 i
= cs8900_irq_map
[i
];
818 lp
->irq_map
= CS8900_IRQ_MAP
; /* fixed IRQ map for CS8900 */
820 int irq_map_buff
[IRQ_MAP_LEN
/2];
822 if (get_eeprom_data(dev
, IRQ_MAP_EEPROM_DATA
,
824 irq_map_buff
) >= 0) {
825 if ((irq_map_buff
[0] & 0xff) == PNP_IRQ_FRMT
)
826 lp
->irq_map
= (irq_map_buff
[0]>>8) | (irq_map_buff
[1] << 8);
834 printk(" IRQ %d", dev
->irq
);
838 get_dma_channel(dev
);
839 printk(", DMA %d", dev
->dma
);
844 printk(", programmed I/O");
847 /* print the ethernet address. */
848 printk(", MAC %pM", dev
->dev_addr
);
850 dev
->open
= net_open
;
851 dev
->stop
= net_close
;
852 dev
->tx_timeout
= net_timeout
;
853 dev
->watchdog_timeo
= HZ
;
854 dev
->hard_start_xmit
= net_send_packet
;
855 dev
->get_stats
= net_get_stats
;
856 dev
->set_multicast_list
= set_multicast_list
;
857 dev
->set_mac_address
= set_mac_address
;
858 #ifdef CONFIG_NET_POLL_CONTROLLER
859 dev
->poll_controller
= net_poll_controller
;
864 printk("cs89x0_probe1() successful\n");
866 retval
= register_netdev(dev
);
871 writeword(dev
->base_addr
, ADD_PORT
, PP_ChipID
);
873 release_region(ioaddr
& ~3, NETCARD_IO_EXTENT
);
879 /*********************************
880 * This page contains DMA routines
881 **********************************/
885 #define dma_page_eq(ptr1, ptr2) ((long)(ptr1)>>17 == (long)(ptr2)>>17)
888 get_dma_channel(struct net_device
*dev
)
890 struct net_local
*lp
= netdev_priv(dev
);
894 lp
->isa_config
|= ISA_RxDMA
;
896 if ((lp
->isa_config
& ANY_ISA_DMA
) == 0)
898 dev
->dma
= lp
->isa_config
& DMA_NO_MASK
;
899 if (lp
->chip_type
== CS8900
)
901 if (dev
->dma
< 5 || dev
->dma
> 7) {
902 lp
->isa_config
&= ~ANY_ISA_DMA
;
910 write_dma(struct net_device
*dev
, int chip_type
, int dma
)
912 struct net_local
*lp
= netdev_priv(dev
);
913 if ((lp
->isa_config
& ANY_ISA_DMA
) == 0)
915 if (chip_type
== CS8900
) {
916 writereg(dev
, PP_CS8900_ISADMA
, dma
-5);
918 writereg(dev
, PP_CS8920_ISADMA
, dma
);
923 set_dma_cfg(struct net_device
*dev
)
925 struct net_local
*lp
= netdev_priv(dev
);
928 if ((lp
->isa_config
& ANY_ISA_DMA
) == 0) {
930 printk("set_dma_cfg(): no DMA\n");
933 if (lp
->isa_config
& ISA_RxDMA
) {
934 lp
->curr_rx_cfg
|= RX_DMA_ONLY
;
936 printk("set_dma_cfg(): RX_DMA_ONLY\n");
938 lp
->curr_rx_cfg
|= AUTO_RX_DMA
; /* not that we support it... */
940 printk("set_dma_cfg(): AUTO_RX_DMA\n");
946 dma_bufcfg(struct net_device
*dev
)
948 struct net_local
*lp
= netdev_priv(dev
);
950 return (lp
->isa_config
& ANY_ISA_DMA
)? RX_DMA_ENBL
: 0;
956 dma_busctl(struct net_device
*dev
)
959 struct net_local
*lp
= netdev_priv(dev
);
961 if (lp
->isa_config
& ANY_ISA_DMA
)
962 retval
|= RESET_RX_DMA
; /* Reset the DMA pointer */
963 if (lp
->isa_config
& DMA_BURST
)
964 retval
|= DMA_BURST_MODE
; /* Does ISA config specify DMA burst ? */
965 if (lp
->dmasize
== 64)
966 retval
|= RX_DMA_SIZE_64K
; /* did they ask for 64K? */
967 retval
|= MEMORY_ON
; /* we need memory enabled to use DMA. */
973 dma_rx(struct net_device
*dev
)
975 struct net_local
*lp
= netdev_priv(dev
);
978 unsigned char *bp
= lp
->rx_dma_ptr
;
980 status
= bp
[0] + (bp
[1]<<8);
981 length
= bp
[2] + (bp
[3]<<8);
984 printk( "%s: receiving DMA packet at %lx, status %x, length %x\n",
985 dev
->name
, (unsigned long)bp
, status
, length
);
987 if ((status
& RX_OK
) == 0) {
988 count_rx_errors(status
, lp
);
989 goto skip_this_frame
;
992 /* Malloc up new buffer. */
993 skb
= dev_alloc_skb(length
+ 2);
995 if (net_debug
) /* I don't think we want to do this to a stressed system */
996 printk("%s: Memory squeeze, dropping packet.\n", dev
->name
);
997 lp
->stats
.rx_dropped
++;
999 /* AKPM: advance bp to the next frame */
1001 bp
+= (length
+ 3) & ~3;
1002 if (bp
>= lp
->end_dma_buff
) bp
-= lp
->dmasize
*1024;
1003 lp
->rx_dma_ptr
= bp
;
1006 skb_reserve(skb
, 2); /* longword align L3 header */
1008 if (bp
+ length
> lp
->end_dma_buff
) {
1009 int semi_cnt
= lp
->end_dma_buff
- bp
;
1010 memcpy(skb_put(skb
,semi_cnt
), bp
, semi_cnt
);
1011 memcpy(skb_put(skb
,length
- semi_cnt
), lp
->dma_buff
,
1014 memcpy(skb_put(skb
,length
), bp
, length
);
1016 bp
+= (length
+ 3) & ~3;
1017 if (bp
>= lp
->end_dma_buff
) bp
-= lp
->dmasize
*1024;
1018 lp
->rx_dma_ptr
= bp
;
1020 if (net_debug
> 3) {
1021 printk( "%s: received %d byte DMA packet of type %x\n",
1023 (skb
->data
[ETH_ALEN
+ETH_ALEN
] << 8) | skb
->data
[ETH_ALEN
+ETH_ALEN
+1]);
1025 skb
->protocol
=eth_type_trans(skb
,dev
);
1027 dev
->last_rx
= jiffies
;
1028 lp
->stats
.rx_packets
++;
1029 lp
->stats
.rx_bytes
+= length
;
1032 #endif /* ALLOW_DMA */
1034 void __init
reset_chip(struct net_device
*dev
)
1036 #if !defined(CONFIG_MACH_MX31ADS)
1037 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1038 struct net_local
*lp
= netdev_priv(dev
);
1039 int ioaddr
= dev
->base_addr
;
1041 int reset_start_time
;
1043 writereg(dev
, PP_SelfCTL
, readreg(dev
, PP_SelfCTL
) | POWER_ON_RESET
);
1048 #if !defined(CONFIG_MACH_IXDP2351) && !defined(CONFIG_ARCH_IXDP2X01)
1049 if (lp
->chip_type
!= CS8900
) {
1050 /* Hardware problem requires PNP registers to be reconfigured after a reset */
1051 writeword(ioaddr
, ADD_PORT
, PP_CS8920_ISAINT
);
1052 outb(dev
->irq
, ioaddr
+ DATA_PORT
);
1053 outb(0, ioaddr
+ DATA_PORT
+ 1);
1055 writeword(ioaddr
, ADD_PORT
, PP_CS8920_ISAMemB
);
1056 outb((dev
->mem_start
>> 16) & 0xff, ioaddr
+ DATA_PORT
);
1057 outb((dev
->mem_start
>> 8) & 0xff, ioaddr
+ DATA_PORT
+ 1);
1059 #endif /* IXDP2x01 */
1061 /* Wait until the chip is reset */
1062 reset_start_time
= jiffies
;
1063 while( (readreg(dev
, PP_SelfST
) & INIT_DONE
) == 0 && jiffies
- reset_start_time
< 2)
1065 #endif /* !CONFIG_MACH_MX31ADS */
1070 control_dc_dc(struct net_device
*dev
, int on_not_off
)
1072 struct net_local
*lp
= netdev_priv(dev
);
1073 unsigned int selfcontrol
;
1074 int timenow
= jiffies
;
1075 /* control the DC to DC convertor in the SelfControl register.
1076 Note: This is hooked up to a general purpose pin, might not
1077 always be a DC to DC convertor. */
1079 selfcontrol
= HCB1_ENBL
; /* Enable the HCB1 bit as an output */
1080 if (((lp
->adapter_cnf
& A_CNF_DC_DC_POLARITY
) != 0) ^ on_not_off
)
1081 selfcontrol
|= HCB1
;
1083 selfcontrol
&= ~HCB1
;
1084 writereg(dev
, PP_SelfCTL
, selfcontrol
);
1086 /* Wait for the DC/DC converter to power up - 500ms */
1087 while (jiffies
- timenow
< HZ
)
1091 #define DETECTED_NONE 0
1092 #define DETECTED_RJ45H 1
1093 #define DETECTED_RJ45F 2
1094 #define DETECTED_AUI 3
1095 #define DETECTED_BNC 4
1098 detect_tp(struct net_device
*dev
)
1100 struct net_local
*lp
= netdev_priv(dev
);
1101 int timenow
= jiffies
;
1104 if (net_debug
> 1) printk("%s: Attempting TP\n", dev
->name
);
1106 /* If connected to another full duplex capable 10-Base-T card the link pulses
1107 seem to be lost when the auto detect bit in the LineCTL is set.
1108 To overcome this the auto detect bit will be cleared whilst testing the
1109 10-Base-T interface. This would not be necessary for the sparrow chip but
1110 is simpler to do it anyway. */
1111 writereg(dev
, PP_LineCTL
, lp
->linectl
&~ AUI_ONLY
);
1112 control_dc_dc(dev
, 0);
1114 /* Delay for the hardware to work out if the TP cable is present - 150ms */
1115 for (timenow
= jiffies
; jiffies
- timenow
< 15; )
1117 if ((readreg(dev
, PP_LineST
) & LINK_OK
) == 0)
1118 return DETECTED_NONE
;
1120 if (lp
->chip_type
== CS8900
) {
1121 switch (lp
->force
& 0xf0) {
1124 printk("%s: cs8900 doesn't autonegotiate\n",dev
->name
);
1125 return DETECTED_NONE
;
1127 /* CS8900 doesn't support AUTO, change to HALF*/
1129 lp
->force
&= ~FORCE_AUTO
;
1130 lp
->force
|= FORCE_HALF
;
1135 writereg(dev
, PP_TestCTL
, readreg(dev
, PP_TestCTL
) | FDX_8900
);
1138 fdx
= readreg(dev
, PP_TestCTL
) & FDX_8900
;
1140 switch (lp
->force
& 0xf0) {
1142 lp
->auto_neg_cnf
= AUTO_NEG_ENABLE
;
1145 lp
->auto_neg_cnf
= 0;
1148 lp
->auto_neg_cnf
= RE_NEG_NOW
| ALLOW_FDX
;
1152 writereg(dev
, PP_AutoNegCTL
, lp
->auto_neg_cnf
& AUTO_NEG_MASK
);
1154 if ((lp
->auto_neg_cnf
& AUTO_NEG_BITS
) == AUTO_NEG_ENABLE
) {
1155 printk(KERN_INFO
"%s: negotiating duplex...\n",dev
->name
);
1156 while (readreg(dev
, PP_AutoNegST
) & AUTO_NEG_BUSY
) {
1157 if (jiffies
- timenow
> 4000) {
1158 printk(KERN_ERR
"**** Full / half duplex auto-negotiation timed out ****\n");
1163 fdx
= readreg(dev
, PP_AutoNegST
) & FDX_ACTIVE
;
1166 return DETECTED_RJ45F
;
1168 return DETECTED_RJ45H
;
1171 /* send a test packet - return true if carrier bits are ok */
1173 send_test_pkt(struct net_device
*dev
)
1175 char test_packet
[] = { 0,0,0,0,0,0, 0,0,0,0,0,0,
1176 0, 46, /* A 46 in network order */
1177 0, 0, /* DSAP=0 & SSAP=0 fields */
1178 0xf3, 0 /* Control (Test Req + P bit set) */ };
1179 long timenow
= jiffies
;
1181 writereg(dev
, PP_LineCTL
, readreg(dev
, PP_LineCTL
) | SERIAL_TX_ON
);
1183 memcpy(test_packet
, dev
->dev_addr
, ETH_ALEN
);
1184 memcpy(test_packet
+ETH_ALEN
, dev
->dev_addr
, ETH_ALEN
);
1186 writeword(dev
->base_addr
, TX_CMD_PORT
, TX_AFTER_ALL
);
1187 writeword(dev
->base_addr
, TX_LEN_PORT
, ETH_ZLEN
);
1189 /* Test to see if the chip has allocated memory for the packet */
1190 while (jiffies
- timenow
< 5)
1191 if (readreg(dev
, PP_BusST
) & READY_FOR_TX_NOW
)
1193 if (jiffies
- timenow
>= 5)
1194 return 0; /* this shouldn't happen */
1196 /* Write the contents of the packet */
1197 writewords(dev
->base_addr
, TX_FRAME_PORT
,test_packet
,(ETH_ZLEN
+1) >>1);
1199 if (net_debug
> 1) printk("Sending test packet ");
1200 /* wait a couple of jiffies for packet to be received */
1201 for (timenow
= jiffies
; jiffies
- timenow
< 3; )
1203 if ((readreg(dev
, PP_TxEvent
) & TX_SEND_OK_BITS
) == TX_OK
) {
1204 if (net_debug
> 1) printk("succeeded\n");
1207 if (net_debug
> 1) printk("failed\n");
1213 detect_aui(struct net_device
*dev
)
1215 struct net_local
*lp
= netdev_priv(dev
);
1217 if (net_debug
> 1) printk("%s: Attempting AUI\n", dev
->name
);
1218 control_dc_dc(dev
, 0);
1220 writereg(dev
, PP_LineCTL
, (lp
->linectl
&~ AUTO_AUI_10BASET
) | AUI_ONLY
);
1222 if (send_test_pkt(dev
))
1223 return DETECTED_AUI
;
1225 return DETECTED_NONE
;
1229 detect_bnc(struct net_device
*dev
)
1231 struct net_local
*lp
= netdev_priv(dev
);
1233 if (net_debug
> 1) printk("%s: Attempting BNC\n", dev
->name
);
1234 control_dc_dc(dev
, 1);
1236 writereg(dev
, PP_LineCTL
, (lp
->linectl
&~ AUTO_AUI_10BASET
) | AUI_ONLY
);
1238 if (send_test_pkt(dev
))
1239 return DETECTED_BNC
;
1241 return DETECTED_NONE
;
1246 write_irq(struct net_device
*dev
, int chip_type
, int irq
)
1250 if (chip_type
== CS8900
) {
1251 /* Search the mapping table for the corresponding IRQ pin. */
1252 for (i
= 0; i
!= ARRAY_SIZE(cs8900_irq_map
); i
++)
1253 if (cs8900_irq_map
[i
] == irq
)
1256 if (i
== ARRAY_SIZE(cs8900_irq_map
))
1258 writereg(dev
, PP_CS8900_ISAINT
, i
);
1260 writereg(dev
, PP_CS8920_ISAINT
, irq
);
1264 /* Open/initialize the board. This is called (in the current kernel)
1265 sometime after booting when the 'ifconfig' program is run.
1267 This routine should set everything up anew at each open, even
1268 registers that "should" only need to be set once at boot, so that
1269 there is non-reboot way to recover if something goes wrong.
1272 /* AKPM: do we need to do any locking here? */
1275 net_open(struct net_device
*dev
)
1277 struct net_local
*lp
= netdev_priv(dev
);
1282 #if !defined(CONFIG_SH_HICOSH4) && !defined(CONFIG_ARCH_PNX010X) /* uses irq#1, so this won't work */
1284 /* Allow interrupts to be generated by the chip */
1285 /* Cirrus' release had this: */
1287 writereg(dev
, PP_BusCTL
, readreg(dev
, PP_BusCTL
)|ENABLE_IRQ
);
1289 /* And 2.3.47 had this: */
1290 writereg(dev
, PP_BusCTL
, ENABLE_IRQ
| MEMORY_ON
);
1292 for (i
= 2; i
< CS8920_NO_INTS
; i
++) {
1293 if ((1 << i
) & lp
->irq_map
) {
1294 if (request_irq(i
, net_interrupt
, 0, dev
->name
, dev
) == 0) {
1296 write_irq(dev
, lp
->chip_type
, i
);
1297 /* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
1303 if (i
>= CS8920_NO_INTS
) {
1304 writereg(dev
, PP_BusCTL
, 0); /* disable interrupts. */
1305 printk(KERN_ERR
"cs89x0: can't get an interrupt\n");
1313 #ifndef CONFIG_CS89x0_NONISA_IRQ
1314 if (((1 << dev
->irq
) & lp
->irq_map
) == 0) {
1315 printk(KERN_ERR
"%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
1316 dev
->name
, dev
->irq
, lp
->irq_map
);
1321 /* FIXME: Cirrus' release had this: */
1322 writereg(dev
, PP_BusCTL
, readreg(dev
, PP_BusCTL
)|ENABLE_IRQ
);
1323 /* And 2.3.47 had this: */
1325 writereg(dev
, PP_BusCTL
, ENABLE_IRQ
| MEMORY_ON
);
1327 write_irq(dev
, lp
->chip_type
, dev
->irq
);
1328 ret
= request_irq(dev
->irq
, &net_interrupt
, 0, dev
->name
, dev
);
1331 printk(KERN_DEBUG
"cs89x0: request_irq(%d) failed\n", dev
->irq
);
1338 if (lp
->isa_config
& ANY_ISA_DMA
) {
1339 unsigned long flags
;
1340 lp
->dma_buff
= (unsigned char *)__get_dma_pages(GFP_KERNEL
,
1341 get_order(lp
->dmasize
* 1024));
1343 if (!lp
->dma_buff
) {
1344 printk(KERN_ERR
"%s: cannot get %dK memory for DMA\n", dev
->name
, lp
->dmasize
);
1347 if (net_debug
> 1) {
1348 printk( "%s: dma %lx %lx\n",
1350 (unsigned long)lp
->dma_buff
,
1351 (unsigned long)isa_virt_to_bus(lp
->dma_buff
));
1353 if ((unsigned long) lp
->dma_buff
>= MAX_DMA_ADDRESS
||
1354 !dma_page_eq(lp
->dma_buff
, lp
->dma_buff
+lp
->dmasize
*1024-1)) {
1355 printk(KERN_ERR
"%s: not usable as DMA buffer\n", dev
->name
);
1358 memset(lp
->dma_buff
, 0, lp
->dmasize
* 1024); /* Why? */
1359 if (request_dma(dev
->dma
, dev
->name
)) {
1360 printk(KERN_ERR
"%s: cannot get dma channel %d\n", dev
->name
, dev
->dma
);
1363 write_dma(dev
, lp
->chip_type
, dev
->dma
);
1364 lp
->rx_dma_ptr
= lp
->dma_buff
;
1365 lp
->end_dma_buff
= lp
->dma_buff
+ lp
->dmasize
*1024;
1366 spin_lock_irqsave(&lp
->lock
, flags
);
1367 disable_dma(dev
->dma
);
1368 clear_dma_ff(dev
->dma
);
1369 set_dma_mode(dev
->dma
, 0x14); /* auto_init as well */
1370 set_dma_addr(dev
->dma
, isa_virt_to_bus(lp
->dma_buff
));
1371 set_dma_count(dev
->dma
, lp
->dmasize
*1024);
1372 enable_dma(dev
->dma
);
1373 spin_unlock_irqrestore(&lp
->lock
, flags
);
1376 #endif /* ALLOW_DMA */
1378 /* set the Ethernet address */
1379 for (i
=0; i
< ETH_ALEN
/2; i
++)
1380 writereg(dev
, PP_IA
+i
*2, dev
->dev_addr
[i
*2] | (dev
->dev_addr
[i
*2+1] << 8));
1382 /* while we're testing the interface, leave interrupts disabled */
1383 writereg(dev
, PP_BusCTL
, MEMORY_ON
);
1385 /* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
1386 if ((lp
->adapter_cnf
& A_CNF_EXTND_10B_2
) && (lp
->adapter_cnf
& A_CNF_LOW_RX_SQUELCH
))
1387 lp
->linectl
= LOW_RX_SQUELCH
;
1391 /* check to make sure that they have the "right" hardware available */
1392 switch(lp
->adapter_cnf
& A_CNF_MEDIA_TYPE
) {
1393 case A_CNF_MEDIA_10B_T
: result
= lp
->adapter_cnf
& A_CNF_10B_T
; break;
1394 case A_CNF_MEDIA_AUI
: result
= lp
->adapter_cnf
& A_CNF_AUI
; break;
1395 case A_CNF_MEDIA_10B_2
: result
= lp
->adapter_cnf
& A_CNF_10B_2
; break;
1396 default: result
= lp
->adapter_cnf
& (A_CNF_10B_T
| A_CNF_AUI
| A_CNF_10B_2
);
1398 #ifdef CONFIG_ARCH_PNX010X
1399 result
= A_CNF_10B_T
;
1402 printk(KERN_ERR
"%s: EEPROM is configured for unavailable media\n", dev
->name
);
1407 release_dma_buff(lp
);
1409 writereg(dev
, PP_LineCTL
, readreg(dev
, PP_LineCTL
) & ~(SERIAL_TX_ON
| SERIAL_RX_ON
));
1410 free_irq(dev
->irq
, dev
);
1415 /* set the hardware to the configured choice */
1416 switch(lp
->adapter_cnf
& A_CNF_MEDIA_TYPE
) {
1417 case A_CNF_MEDIA_10B_T
:
1418 result
= detect_tp(dev
);
1419 if (result
==DETECTED_NONE
) {
1420 printk(KERN_WARNING
"%s: 10Base-T (RJ-45) has no cable\n", dev
->name
);
1421 if (lp
->auto_neg_cnf
& IMM_BIT
) /* check "ignore missing media" bit */
1422 result
= DETECTED_RJ45H
; /* Yes! I don't care if I see a link pulse */
1425 case A_CNF_MEDIA_AUI
:
1426 result
= detect_aui(dev
);
1427 if (result
==DETECTED_NONE
) {
1428 printk(KERN_WARNING
"%s: 10Base-5 (AUI) has no cable\n", dev
->name
);
1429 if (lp
->auto_neg_cnf
& IMM_BIT
) /* check "ignore missing media" bit */
1430 result
= DETECTED_AUI
; /* Yes! I don't care if I see a carrrier */
1433 case A_CNF_MEDIA_10B_2
:
1434 result
= detect_bnc(dev
);
1435 if (result
==DETECTED_NONE
) {
1436 printk(KERN_WARNING
"%s: 10Base-2 (BNC) has no cable\n", dev
->name
);
1437 if (lp
->auto_neg_cnf
& IMM_BIT
) /* check "ignore missing media" bit */
1438 result
= DETECTED_BNC
; /* Yes! I don't care if I can xmit a packet */
1441 case A_CNF_MEDIA_AUTO
:
1442 writereg(dev
, PP_LineCTL
, lp
->linectl
| AUTO_AUI_10BASET
);
1443 if (lp
->adapter_cnf
& A_CNF_10B_T
)
1444 if ((result
= detect_tp(dev
)) != DETECTED_NONE
)
1446 if (lp
->adapter_cnf
& A_CNF_AUI
)
1447 if ((result
= detect_aui(dev
)) != DETECTED_NONE
)
1449 if (lp
->adapter_cnf
& A_CNF_10B_2
)
1450 if ((result
= detect_bnc(dev
)) != DETECTED_NONE
)
1452 printk(KERN_ERR
"%s: no media detected\n", dev
->name
);
1457 printk(KERN_ERR
"%s: no network cable attached to configured media\n", dev
->name
);
1459 case DETECTED_RJ45H
:
1460 printk(KERN_INFO
"%s: using half-duplex 10Base-T (RJ-45)\n", dev
->name
);
1462 case DETECTED_RJ45F
:
1463 printk(KERN_INFO
"%s: using full-duplex 10Base-T (RJ-45)\n", dev
->name
);
1466 printk(KERN_INFO
"%s: using 10Base-5 (AUI)\n", dev
->name
);
1469 printk(KERN_INFO
"%s: using 10Base-2 (BNC)\n", dev
->name
);
1473 /* Turn on both receive and transmit operations */
1474 writereg(dev
, PP_LineCTL
, readreg(dev
, PP_LineCTL
) | SERIAL_RX_ON
| SERIAL_TX_ON
);
1476 /* Receive only error free packets addressed to this card */
1478 writereg(dev
, PP_RxCTL
, DEF_RX_ACCEPT
);
1480 lp
->curr_rx_cfg
= RX_OK_ENBL
| RX_CRC_ERROR_ENBL
;
1482 if (lp
->isa_config
& STREAM_TRANSFER
)
1483 lp
->curr_rx_cfg
|= RX_STREAM_ENBL
;
1487 writereg(dev
, PP_RxCFG
, lp
->curr_rx_cfg
);
1489 writereg(dev
, PP_TxCFG
, TX_LOST_CRS_ENBL
| TX_SQE_ERROR_ENBL
| TX_OK_ENBL
|
1490 TX_LATE_COL_ENBL
| TX_JBR_ENBL
| TX_ANY_COL_ENBL
| TX_16_COL_ENBL
);
1492 writereg(dev
, PP_BufCFG
, READY_FOR_TX_ENBL
| RX_MISS_COUNT_OVRFLOW_ENBL
|
1496 TX_COL_COUNT_OVRFLOW_ENBL
| TX_UNDERRUN_ENBL
);
1498 /* now that we've got our act together, enable everything */
1499 writereg(dev
, PP_BusCTL
, ENABLE_IRQ
1500 | (dev
->mem_start
?MEMORY_ON
: 0) /* turn memory on */
1505 netif_start_queue(dev
);
1507 printk("cs89x0: net_open() succeeded\n");
1513 static void net_timeout(struct net_device
*dev
)
1515 /* If we get here, some higher level has decided we are broken.
1516 There should really be a "kick me" function call instead. */
1517 if (net_debug
> 0) printk("%s: transmit timed out, %s?\n", dev
->name
,
1518 tx_done(dev
) ? "IRQ conflict ?" : "network cable problem");
1519 /* Try to restart the adaptor. */
1520 netif_wake_queue(dev
);
1523 static int net_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
1525 struct net_local
*lp
= netdev_priv(dev
);
1527 if (net_debug
> 3) {
1528 printk("%s: sent %d byte packet of type %x\n",
1529 dev
->name
, skb
->len
,
1530 (skb
->data
[ETH_ALEN
+ETH_ALEN
] << 8) | skb
->data
[ETH_ALEN
+ETH_ALEN
+1]);
1533 /* keep the upload from being interrupted, since we
1534 ask the chip to start transmitting before the
1535 whole packet has been completely uploaded. */
1537 spin_lock_irq(&lp
->lock
);
1538 netif_stop_queue(dev
);
1540 /* initiate a transmit sequence */
1541 writeword(dev
->base_addr
, TX_CMD_PORT
, lp
->send_cmd
);
1542 writeword(dev
->base_addr
, TX_LEN_PORT
, skb
->len
);
1544 /* Test to see if the chip has allocated memory for the packet */
1545 if ((readreg(dev
, PP_BusST
) & READY_FOR_TX_NOW
) == 0) {
1547 * Gasp! It hasn't. But that shouldn't happen since
1548 * we're waiting for TxOk, so return 1 and requeue this packet.
1551 spin_unlock_irq(&lp
->lock
);
1552 if (net_debug
) printk("cs89x0: Tx buffer not free!\n");
1555 /* Write the contents of the packet */
1556 writewords(dev
->base_addr
, TX_FRAME_PORT
,skb
->data
,(skb
->len
+1) >>1);
1557 spin_unlock_irq(&lp
->lock
);
1558 lp
->stats
.tx_bytes
+= skb
->len
;
1559 dev
->trans_start
= jiffies
;
1560 dev_kfree_skb (skb
);
1563 * We DO NOT call netif_wake_queue() here.
1564 * We also DO NOT call netif_start_queue().
1566 * Either of these would cause another bottom half run through
1567 * net_send_packet() before this packet has fully gone out. That causes
1568 * us to hit the "Gasp!" above and the send is rescheduled. it runs like
1569 * a dog. We just return and wait for the Tx completion interrupt handler
1570 * to restart the netdevice layer
1576 /* The typical workload of the driver:
1577 Handle the network interface interrupts. */
1579 static irqreturn_t
net_interrupt(int irq
, void *dev_id
)
1581 struct net_device
*dev
= dev_id
;
1582 struct net_local
*lp
;
1586 ioaddr
= dev
->base_addr
;
1587 lp
= netdev_priv(dev
);
1589 /* we MUST read all the events out of the ISQ, otherwise we'll never
1590 get interrupted again. As a consequence, we can't have any limit
1591 on the number of times we loop in the interrupt handler. The
1592 hardware guarantees that eventually we'll run out of events. Of
1593 course, if you're on a slow machine, and packets are arriving
1594 faster than you can read them off, you're screwed. Hasta la
1596 while ((status
= readword(dev
->base_addr
, ISQ_PORT
))) {
1597 if (net_debug
> 4)printk("%s: event=%04x\n", dev
->name
, status
);
1599 switch(status
& ISQ_EVENT_MASK
) {
1600 case ISQ_RECEIVER_EVENT
:
1601 /* Got a packet(s). */
1604 case ISQ_TRANSMITTER_EVENT
:
1605 lp
->stats
.tx_packets
++;
1606 netif_wake_queue(dev
); /* Inform upper layers. */
1607 if ((status
& ( TX_OK
|
1611 TX_16_COL
)) != TX_OK
) {
1612 if ((status
& TX_OK
) == 0) lp
->stats
.tx_errors
++;
1613 if (status
& TX_LOST_CRS
) lp
->stats
.tx_carrier_errors
++;
1614 if (status
& TX_SQE_ERROR
) lp
->stats
.tx_heartbeat_errors
++;
1615 if (status
& TX_LATE_COL
) lp
->stats
.tx_window_errors
++;
1616 if (status
& TX_16_COL
) lp
->stats
.tx_aborted_errors
++;
1619 case ISQ_BUFFER_EVENT
:
1620 if (status
& READY_FOR_TX
) {
1621 /* we tried to transmit a packet earlier,
1622 but inexplicably ran out of buffers.
1623 That shouldn't happen since we only ever
1624 load one packet. Shrug. Do the right
1626 netif_wake_queue(dev
); /* Inform upper layers. */
1628 if (status
& TX_UNDERRUN
) {
1629 if (net_debug
> 0) printk("%s: transmit underrun\n", dev
->name
);
1630 lp
->send_underrun
++;
1631 if (lp
->send_underrun
== 3) lp
->send_cmd
= TX_AFTER_381
;
1632 else if (lp
->send_underrun
== 6) lp
->send_cmd
= TX_AFTER_ALL
;
1633 /* transmit cycle is done, although
1634 frame wasn't transmitted - this
1635 avoids having to wait for the upper
1636 layers to timeout on us, in the
1637 event of a tx underrun */
1638 netif_wake_queue(dev
); /* Inform upper layers. */
1641 if (lp
->use_dma
&& (status
& RX_DMA
)) {
1642 int count
= readreg(dev
, PP_DmaFrameCnt
);
1645 printk("%s: receiving %d DMA frames\n", dev
->name
, count
);
1646 if (net_debug
> 2 && count
>1)
1647 printk("%s: receiving %d DMA frames\n", dev
->name
, count
);
1650 count
= readreg(dev
, PP_DmaFrameCnt
);
1651 if (net_debug
> 2 && count
> 0)
1652 printk("%s: continuing with %d DMA frames\n", dev
->name
, count
);
1657 case ISQ_RX_MISS_EVENT
:
1658 lp
->stats
.rx_missed_errors
+= (status
>>6);
1660 case ISQ_TX_COL_EVENT
:
1661 lp
->stats
.collisions
+= (status
>>6);
1665 return IRQ_RETVAL(handled
);
1669 count_rx_errors(int status
, struct net_local
*lp
)
1671 lp
->stats
.rx_errors
++;
1672 if (status
& RX_RUNT
) lp
->stats
.rx_length_errors
++;
1673 if (status
& RX_EXTRA_DATA
) lp
->stats
.rx_length_errors
++;
1674 if (status
& RX_CRC_ERROR
) if (!(status
& (RX_EXTRA_DATA
|RX_RUNT
)))
1676 lp
->stats
.rx_crc_errors
++;
1677 if (status
& RX_DRIBBLE
) lp
->stats
.rx_frame_errors
++;
1681 /* We have a good packet(s), get it/them out of the buffers. */
1683 net_rx(struct net_device
*dev
)
1685 struct net_local
*lp
= netdev_priv(dev
);
1686 struct sk_buff
*skb
;
1689 int ioaddr
= dev
->base_addr
;
1690 status
= readword(ioaddr
, RX_FRAME_PORT
);
1691 length
= readword(ioaddr
, RX_FRAME_PORT
);
1693 if ((status
& RX_OK
) == 0) {
1694 count_rx_errors(status
, lp
);
1698 /* Malloc up new buffer. */
1699 skb
= dev_alloc_skb(length
+ 2);
1701 #if 0 /* Again, this seems a cruel thing to do */
1702 printk(KERN_WARNING
"%s: Memory squeeze, dropping packet.\n", dev
->name
);
1704 lp
->stats
.rx_dropped
++;
1707 skb_reserve(skb
, 2); /* longword align L3 header */
1709 readwords(ioaddr
, RX_FRAME_PORT
, skb_put(skb
, length
), length
>> 1);
1711 skb
->data
[length
-1] = readword(ioaddr
, RX_FRAME_PORT
);
1713 if (net_debug
> 3) {
1714 printk( "%s: received %d byte packet of type %x\n",
1716 (skb
->data
[ETH_ALEN
+ETH_ALEN
] << 8) | skb
->data
[ETH_ALEN
+ETH_ALEN
+1]);
1719 skb
->protocol
=eth_type_trans(skb
,dev
);
1721 dev
->last_rx
= jiffies
;
1722 lp
->stats
.rx_packets
++;
1723 lp
->stats
.rx_bytes
+= length
;
1727 static void release_dma_buff(struct net_local
*lp
)
1730 free_pages((unsigned long)(lp
->dma_buff
), get_order(lp
->dmasize
* 1024));
1731 lp
->dma_buff
= NULL
;
1736 /* The inverse routine to net_open(). */
1738 net_close(struct net_device
*dev
)
1741 struct net_local
*lp
= netdev_priv(dev
);
1744 netif_stop_queue(dev
);
1746 writereg(dev
, PP_RxCFG
, 0);
1747 writereg(dev
, PP_TxCFG
, 0);
1748 writereg(dev
, PP_BufCFG
, 0);
1749 writereg(dev
, PP_BusCTL
, 0);
1751 free_irq(dev
->irq
, dev
);
1754 if (lp
->use_dma
&& lp
->dma
) {
1756 release_dma_buff(lp
);
1760 /* Update the statistics here. */
1764 /* Get the current statistics. This may be called with the card open or
1766 static struct net_device_stats
*
1767 net_get_stats(struct net_device
*dev
)
1769 struct net_local
*lp
= netdev_priv(dev
);
1770 unsigned long flags
;
1772 spin_lock_irqsave(&lp
->lock
, flags
);
1773 /* Update the statistics from the device registers. */
1774 lp
->stats
.rx_missed_errors
+= (readreg(dev
, PP_RxMiss
) >> 6);
1775 lp
->stats
.collisions
+= (readreg(dev
, PP_TxCol
) >> 6);
1776 spin_unlock_irqrestore(&lp
->lock
, flags
);
1781 static void set_multicast_list(struct net_device
*dev
)
1783 struct net_local
*lp
= netdev_priv(dev
);
1784 unsigned long flags
;
1786 spin_lock_irqsave(&lp
->lock
, flags
);
1787 if(dev
->flags
&IFF_PROMISC
)
1789 lp
->rx_mode
= RX_ALL_ACCEPT
;
1791 else if((dev
->flags
&IFF_ALLMULTI
)||dev
->mc_list
)
1793 /* The multicast-accept list is initialized to accept-all, and we
1794 rely on higher-level filtering for now. */
1795 lp
->rx_mode
= RX_MULTCAST_ACCEPT
;
1800 writereg(dev
, PP_RxCTL
, DEF_RX_ACCEPT
| lp
->rx_mode
);
1802 /* in promiscuous mode, we accept errored packets, so we have to enable interrupts on them also */
1803 writereg(dev
, PP_RxCFG
, lp
->curr_rx_cfg
|
1804 (lp
->rx_mode
== RX_ALL_ACCEPT
? (RX_CRC_ERROR_ENBL
|RX_RUNT_ENBL
|RX_EXTRA_DATA_ENBL
) : 0));
1805 spin_unlock_irqrestore(&lp
->lock
, flags
);
1809 static int set_mac_address(struct net_device
*dev
, void *p
)
1812 struct sockaddr
*addr
= p
;
1814 if (netif_running(dev
))
1817 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
1820 printk("%s: Setting MAC address to %pM.\n",
1821 dev
->name
, dev
->dev_addr
);
1823 /* set the Ethernet address */
1824 for (i
=0; i
< ETH_ALEN
/2; i
++)
1825 writereg(dev
, PP_IA
+i
*2, dev
->dev_addr
[i
*2] | (dev
->dev_addr
[i
*2+1] << 8));
1832 static struct net_device
*dev_cs89x0
;
1835 * Support the 'debug' module parm even if we're compiled for non-debug to
1836 * avoid breaking someone's startup scripts
1842 static char media
[8];
1843 static int duplex
=-1;
1845 static int use_dma
; /* These generate unused var warnings if ALLOW_DMA = 0 */
1847 static int dmasize
=16; /* or 64 */
1849 module_param(io
, int, 0);
1850 module_param(irq
, int, 0);
1851 module_param(debug
, int, 0);
1852 module_param_string(media
, media
, sizeof(media
), 0);
1853 module_param(duplex
, int, 0);
1854 module_param(dma
, int, 0);
1855 module_param(dmasize
, int, 0);
1856 module_param(use_dma
, int, 0);
1857 MODULE_PARM_DESC(io
, "cs89x0 I/O base address");
1858 MODULE_PARM_DESC(irq
, "cs89x0 IRQ number");
1860 MODULE_PARM_DESC(debug
, "cs89x0 debug level (0-6)");
1862 MODULE_PARM_DESC(debug
, "(ignored)");
1864 MODULE_PARM_DESC(media
, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
1865 /* No other value than -1 for duplex seems to be currently interpreted */
1866 MODULE_PARM_DESC(duplex
, "(ignored)");
1868 MODULE_PARM_DESC(dma
, "cs89x0 ISA DMA channel; ignored if use_dma=0");
1869 MODULE_PARM_DESC(dmasize
, "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
1870 MODULE_PARM_DESC(use_dma
, "cs89x0 using DMA (0-1)");
1872 MODULE_PARM_DESC(dma
, "(ignored)");
1873 MODULE_PARM_DESC(dmasize
, "(ignored)");
1874 MODULE_PARM_DESC(use_dma
, "(ignored)");
1877 MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@crynwr.com>, Andrew Morton");
1878 MODULE_LICENSE("GPL");
1882 * media=t - specify media type
1886 * duplex=0 - specify forced half/full/autonegotiate duplex
1887 * debug=# - debug level
1890 * Default Chip Configuration:
1891 * DMA Burst = enabled
1892 * IOCHRDY Enabled = enabled
1894 * CS8900 defaults to half-duplex if not specified on command-line
1895 * CS8920 defaults to autoneg if not specified on command-line
1896 * Use reset defaults for other config parameters
1899 * media type specified is supported (circuitry is present)
1900 * if memory address is > 1MB, then required mem decode hw is present
1901 * if 10B-2, then agent other than driver will enable DC/DC converter
1902 (hw or software util)
1907 int __init
init_module(void)
1909 struct net_device
*dev
= alloc_etherdev(sizeof(struct net_local
));
1910 struct net_local
*lp
;
1922 dev
->base_addr
= io
;
1923 lp
= netdev_priv(dev
);
1927 lp
->use_dma
= use_dma
;
1929 lp
->dmasize
= dmasize
;
1933 spin_lock_init(&lp
->lock
);
1935 /* boy, they'd better get these right */
1936 if (!strcmp(media
, "rj45"))
1937 lp
->adapter_cnf
= A_CNF_MEDIA_10B_T
| A_CNF_10B_T
;
1938 else if (!strcmp(media
, "aui"))
1939 lp
->adapter_cnf
= A_CNF_MEDIA_AUI
| A_CNF_AUI
;
1940 else if (!strcmp(media
, "bnc"))
1941 lp
->adapter_cnf
= A_CNF_MEDIA_10B_2
| A_CNF_10B_2
;
1943 lp
->adapter_cnf
= A_CNF_MEDIA_10B_T
| A_CNF_10B_T
;
1946 lp
->auto_neg_cnf
= AUTO_NEG_ENABLE
;
1949 printk(KERN_ERR
"cs89x0.c: Module autoprobing not allowed.\n");
1950 printk(KERN_ERR
"cs89x0.c: Append io=0xNNN\n");
1953 } else if (io
<= 0x1ff) {
1959 if (use_dma
&& dmasize
!= 16 && dmasize
!= 64) {
1960 printk(KERN_ERR
"cs89x0.c: dma size must be either 16K or 64K, not %dK\n", dmasize
);
1965 ret
= cs89x0_probe1(dev
, io
, 1);
1977 cleanup_module(void)
1979 unregister_netdev(dev_cs89x0
);
1980 writeword(dev_cs89x0
->base_addr
, ADD_PORT
, PP_ChipID
);
1981 release_region(dev_cs89x0
->base_addr
, NETCARD_IO_EXTENT
);
1982 free_netdev(dev_cs89x0
);
1988 * version-control: t
1989 * kept-new-versions: 5