1 /* smc-mca.c: A SMC Ultra ethernet driver for linux. */
3 Most of this driver, except for ultramca_probe is nearly
4 verbatim from smc-ultra.c by Donald Becker. The rest is
5 written and copyright 1996 by David Weis, weisd3458@uni.edu
7 This is a driver for the SMC Ultra and SMC EtherEZ ethercards.
9 This driver uses the cards in the 8390-compatible, shared memory mode.
10 Most of the run-time complexity is handled by the generic code in
13 This driver enables the shared memory only when doing the actual data
14 transfers to avoid a bug in early version of the card that corrupted
15 data transferred by a AHA1542.
17 This driver does not support the programmed-I/O data transfer mode of
18 the EtherEZ. That support (if available) is smc-ez.c. Nor does it
19 use the non-8390-compatible "Altego" mode. (No support currently planned.)
23 Paul Gortmaker : multiple card support for module users.
24 David Weis : Micro Channel-ized it.
25 Tom Sightler : Added support for IBM PS/2 Ethernet Adapter/A
26 Christopher Turcksin : Changed MCA-probe so that multiple adapters are
27 found correctly (Jul 16, 1997)
28 Chris Beauregard : Tried to merge the two changes above (Dec 15, 1997)
29 Tom Sightler : Fixed minor detection bug caused by above merge
30 Tom Sightler : Added support for three more Western Digital
32 Tom Sightler : Added support for 2.2.x mca_find_unused_adapter
33 Hartmut Schmidt : - Modified parameter detection to handle each
34 card differently depending on a switch-list
35 - 'card_ver' removed from the adapter list
36 - Some minor bug fixes
39 #include <linux/mca.h>
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/errno.h>
43 #include <linux/string.h>
44 #include <linux/init.h>
45 #include <linux/netdevice.h>
46 #include <linux/etherdevice.h>
49 #include <asm/system.h>
54 #define DRV_NAME "smc-mca"
56 static int ultramca_open(struct net_device
*dev
);
57 static void ultramca_reset_8390(struct net_device
*dev
);
58 static void ultramca_get_8390_hdr(struct net_device
*dev
,
59 struct e8390_pkt_hdr
*hdr
,
61 static void ultramca_block_input(struct net_device
*dev
, int count
,
64 static void ultramca_block_output(struct net_device
*dev
, int count
,
65 const unsigned char *buf
,
66 const int start_page
);
67 static int ultramca_close_card(struct net_device
*dev
);
69 #define START_PG 0x00 /* First page of TX buffer */
71 #define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
72 #define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
73 #define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
74 #define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
75 #define ULTRA_IO_EXTENT 32
76 #define EN0_ERWCNT 0x08 /* Early receive warning count. */
78 #define _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A 0
79 #define _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A 1
80 #define _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A 2
81 #define _6fc1_WD_Starcard_PLUS_A_WD8003ST_A 3
82 #define _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A 4
83 #define _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A 5
84 #define _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A 6
85 #define _efe5_IBM_PS2_Adapter_A_for_Ethernet 7
87 struct smc_mca_adapters_t
{
92 #define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */
94 static int ultra_io
[MAX_ULTRAMCA_CARDS
];
95 static int ultra_irq
[MAX_ULTRAMCA_CARDS
];
96 MODULE_LICENSE("GPL");
98 module_param_array(ultra_io
, int, NULL
, 0);
99 module_param_array(ultra_irq
, int, NULL
, 0);
100 MODULE_PARM_DESC(ultra_io
, "SMC Ultra/EtherEZ MCA I/O base address(es)");
101 MODULE_PARM_DESC(ultra_irq
, "SMC Ultra/EtherEZ MCA IRQ number(s)");
103 static short smc_mca_adapter_ids
[] __initdata
= {
115 static char *smc_mca_adapter_names
[] __initdata
= {
116 "SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)",
117 "SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)",
118 "WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)",
119 "WD Starcard PLUS/A (WD8003ST/A)",
120 "WD Ethercard PLUS 10T/A (WD8003W/A)",
121 "IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)",
122 "IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)",
123 "IBM PS/2 Adapter/A for Ethernet",
127 static int ultra_found
= 0;
129 int __init
ultramca_probe(struct device
*gen_dev
)
131 unsigned short ioaddr
;
132 struct net_device
*dev
;
133 unsigned char reg4
, num_pages
;
134 struct mca_device
*mca_dev
= to_mca_device(gen_dev
);
135 char slot
= mca_dev
->slot
;
136 unsigned char pos2
= 0xff, pos3
= 0xff, pos4
= 0xff, pos5
= 0xff;
138 int adapter
= mca_dev
->index
;
141 int base_addr
= ultra_io
[ultra_found
];
142 int irq
= ultra_irq
[ultra_found
];
144 if (base_addr
|| irq
) {
145 printk(KERN_INFO
"Probing for SMC MCA adapter");
147 printk(KERN_INFO
" at I/O address 0x%04x%c",
148 base_addr
, irq
? ' ' : '\n');
151 printk(KERN_INFO
"using irq %d\n", irq
);
158 /* If we're trying to match a specificied irq or io address,
159 * we'll reject the adapter found unless it's the one we're
162 pos2
= mca_device_read_stored_pos(mca_dev
, 2); /* io_addr */
163 pos3
= mca_device_read_stored_pos(mca_dev
, 3); /* shared mem */
164 pos4
= mca_device_read_stored_pos(mca_dev
, 4); /* ROM bios addr range */
165 pos5
= mca_device_read_stored_pos(mca_dev
, 5); /* irq, media and RIPL */
167 /* Test the following conditions:
168 * - If an irq parameter is supplied, compare it
169 * with the irq of the adapter we found
170 * - If a base_addr paramater is given, compare it
171 * with the base_addr of the adapter we found
172 * - Check that the irq and the base_addr of the
173 * adapter we found is not already in use by
177 switch (mca_dev
->index
) {
178 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A
:
179 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A
:
180 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A
:
181 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A
:
183 tbase
= addr_table
[(pos2
& 0xf0) >> 4].base_addr
;
184 tirq
= irq_table
[(pos5
& 0xc) >> 2].new_irq
;
187 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A
:
188 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A
:
189 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A
:
190 case _efe5_IBM_PS2_Adapter_A_for_Ethernet
:
192 tbase
= ((pos2
& 0x0fe) * 0x10);
193 tirq
= irq_table
[(pos5
& 3)].old_irq
;
199 || (irq
&& irq
!= tirq
)
200 || (base_addr
&& tbase
!= base_addr
))
201 /* FIXME: we're trying to force the ordering of the
202 * devices here, there should be a way of getting this
207 dev
= alloc_ei_netdev();
211 SET_MODULE_OWNER(dev
);
212 SET_NETDEV_DEV(dev
, gen_dev
);
213 mca_device_set_name(mca_dev
, smc_mca_adapter_names
[adapter
]);
214 mca_device_set_claim(mca_dev
, 1);
216 printk(KERN_INFO
"smc_mca: %s found in slot %d\n",
217 smc_mca_adapter_names
[adapter
], slot
+ 1);
221 dev
->base_addr
= ioaddr
= mca_device_transform_ioport(mca_dev
, tbase
);
222 dev
->irq
= mca_device_transform_irq(mca_dev
, tirq
);
226 switch (adapter
) { /* card-# in const array above [hs] */
227 case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A
:
228 case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A
:
230 for (i
= 0; i
< 16; i
++) { /* taking 16 counts
232 if (mem_table
[i
].mem_index
== (pos3
& ~MEM_MASK
)) {
233 dev
->mem_start
= (unsigned long)
234 mca_device_transform_memory(mca_dev
, (void *)mem_table
[i
].mem_start
);
235 num_pages
= mem_table
[i
].num_pages
;
240 case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A
:
241 case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A
:
242 case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A
:
243 case _efe5_IBM_PS2_Adapter_A_for_Ethernet
:
245 dev
->mem_start
= (unsigned long)
246 mca_device_transform_memory(mca_dev
, (void *)((pos3
& 0xfc) * 0x1000));
250 case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A
:
251 case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A
:
253 /* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates
254 * the index of the 0x2000 step.
255 * beware different number of pages [hs]
257 dev
->mem_start
= (unsigned long)
258 mca_device_transform_memory(mca_dev
, (void *)(0xc0000 + (0x2000 * (pos3
& 0xf))));
259 num_pages
= 0x20 + (2 * (pos3
& 0x10));
264 /* sanity check, shouldn't happen */
265 if (dev
->mem_start
== 0) {
270 if (!request_region(ioaddr
, ULTRA_IO_EXTENT
, DRV_NAME
)) {
275 reg4
= inb(ioaddr
+ 4) & 0x7f;
276 outb(reg4
, ioaddr
+ 4);
278 printk(KERN_INFO
"smc_mca[%d]: Parameters: %#3x,", slot
+ 1, ioaddr
);
280 for (i
= 0; i
< 6; i
++)
281 printk(" %2.2X", dev
->dev_addr
[i
] = inb(ioaddr
+ 8 + i
));
283 /* Switch from the station address to the alternate register set
284 * and read the useful registers there.
287 outb(0x80 | reg4
, ioaddr
+ 4);
289 /* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot.
292 outb(0x80 | inb(ioaddr
+ 0x0c), ioaddr
+ 0x0c);
294 /* Switch back to the station address register set so that
295 * the MS-DOS driver can find the card after a warm boot.
298 outb(reg4
, ioaddr
+ 4);
300 gen_dev
->driver_data
= dev
;
302 /* The 8390 isn't at the base address, so fake the offset
305 dev
->base_addr
= ioaddr
+ ULTRA_NIC_OFFSET
;
307 ei_status
.name
= "SMC Ultra MCA";
308 ei_status
.word16
= 1;
309 ei_status
.tx_start_page
= START_PG
;
310 ei_status
.rx_start_page
= START_PG
+ TX_PAGES
;
311 ei_status
.stop_page
= num_pages
;
313 ei_status
.mem
= ioremap(dev
->mem_start
, (ei_status
.stop_page
- START_PG
) * 256);
314 if (!ei_status
.mem
) {
316 goto err_release_region
;
319 dev
->mem_end
= dev
->mem_start
+ (ei_status
.stop_page
- START_PG
) * 256;
321 printk(", IRQ %d memory %#lx-%#lx.\n",
322 dev
->irq
, dev
->mem_start
, dev
->mem_end
- 1);
324 ei_status
.reset_8390
= &ultramca_reset_8390
;
325 ei_status
.block_input
= &ultramca_block_input
;
326 ei_status
.block_output
= &ultramca_block_output
;
327 ei_status
.get_8390_hdr
= &ultramca_get_8390_hdr
;
329 ei_status
.priv
= slot
;
331 dev
->open
= &ultramca_open
;
332 dev
->stop
= &ultramca_close_card
;
333 #ifdef CONFIG_NET_POLL_CONTROLLER
334 dev
->poll_controller
= ei_poll
;
339 rc
= register_netdev(dev
);
346 iounmap(ei_status
.mem
);
348 release_region(ioaddr
, ULTRA_IO_EXTENT
);
350 mca_device_set_claim(mca_dev
, 0);
355 static int ultramca_open(struct net_device
*dev
)
357 int ioaddr
= dev
->base_addr
- ULTRA_NIC_OFFSET
; /* ASIC addr */
360 if ((retval
= request_irq(dev
->irq
, ei_interrupt
, 0, dev
->name
, dev
)))
363 outb(ULTRA_MEMENB
, ioaddr
); /* Enable memory */
364 outb(0x80, ioaddr
+ 5); /* ??? */
365 outb(0x01, ioaddr
+ 6); /* Enable interrupts and memory. */
366 outb(0x04, ioaddr
+ 5); /* ??? */
368 /* Set the early receive warning level in window 0 high enough not
369 * to receive ERW interrupts.
372 /* outb_p(E8390_NODMA + E8390_PAGE0, dev->base_addr);
373 * outb(0xff, dev->base_addr + EN0_ERWCNT);
380 static void ultramca_reset_8390(struct net_device
*dev
)
382 int ioaddr
= dev
->base_addr
- ULTRA_NIC_OFFSET
; /* ASIC addr */
384 outb(ULTRA_RESET
, ioaddr
);
386 printk("resetting Ultra, t=%ld...", jiffies
);
389 outb(0x80, ioaddr
+ 5); /* ??? */
390 outb(0x01, ioaddr
+ 6); /* Enable interrupts and memory. */
393 printk("reset done\n");
397 /* Grab the 8390 specific header. Similar to the block_input routine, but
398 * we don't need to be concerned with ring wrap as the header will be at
399 * the start of a page, so we optimize accordingly.
402 static void ultramca_get_8390_hdr(struct net_device
*dev
, struct e8390_pkt_hdr
*hdr
, int ring_page
)
404 void __iomem
*hdr_start
= ei_status
.mem
+ ((ring_page
- START_PG
) << 8);
407 /* Officially this is what we are doing, but the readl() is faster */
408 memcpy_fromio(hdr
, hdr_start
, sizeof(struct e8390_pkt_hdr
));
410 ((unsigned int*)hdr
)[0] = readl(hdr_start
);
414 /* Block input and output are easy on shared memory ethercards, the only
415 * complication is when the ring buffer wraps.
418 static void ultramca_block_input(struct net_device
*dev
, int count
, struct sk_buff
*skb
, int ring_offset
)
420 void __iomem
*xfer_start
= ei_status
.mem
+ ring_offset
- START_PG
* 256;
422 if (ring_offset
+ count
> ei_status
.stop_page
* 256) {
423 /* We must wrap the input move. */
424 int semi_count
= ei_status
.stop_page
* 256 - ring_offset
;
425 memcpy_fromio(skb
->data
, xfer_start
, semi_count
);
427 memcpy_fromio(skb
->data
+ semi_count
, ei_status
.mem
+ TX_PAGES
* 256, count
);
429 /* Packet is in one chunk -- we can copy + cksum. */
430 eth_io_copy_and_sum(skb
, xfer_start
, count
, 0);
435 static void ultramca_block_output(struct net_device
*dev
, int count
, const unsigned char *buf
,
438 void __iomem
*shmem
= ei_status
.mem
+ ((start_page
- START_PG
) << 8);
440 memcpy_toio(shmem
, buf
, count
);
443 static int ultramca_close_card(struct net_device
*dev
)
445 int ioaddr
= dev
->base_addr
- ULTRA_NIC_OFFSET
; /* ASIC addr */
447 netif_stop_queue(dev
);
450 printk("%s: Shutting down ethercard.\n", dev
->name
);
452 outb(0x00, ioaddr
+ 6); /* Disable interrupts. */
453 free_irq(dev
->irq
, dev
);
456 /* We should someday disable shared memory and change to 8-bit mode
463 static int ultramca_remove(struct device
*gen_dev
)
465 struct mca_device
*mca_dev
= to_mca_device(gen_dev
);
466 struct net_device
*dev
= (struct net_device
*)gen_dev
->driver_data
;
469 /* NB: ultra_close_card() does free_irq */
470 int ioaddr
= dev
->base_addr
- ULTRA_NIC_OFFSET
;
472 unregister_netdev(dev
);
473 mca_device_set_claim(mca_dev
, 0);
474 release_region(ioaddr
, ULTRA_IO_EXTENT
);
475 iounmap(ei_status
.mem
);
482 static struct mca_driver ultra_driver
= {
483 .id_table
= smc_mca_adapter_ids
,
486 .bus
= &mca_bus_type
,
487 .probe
= ultramca_probe
,
488 .remove
= ultramca_remove
,
492 static int __init
ultramca_init_module(void)
497 mca_register_driver(&ultra_driver
);
499 return ultra_found
? 0 : -ENXIO
;
502 static void __exit
ultramca_cleanup_module(void)
504 mca_unregister_driver(&ultra_driver
);
506 module_init(ultramca_init_module
);
507 module_exit(ultramca_cleanup_module
);