2 * Network device driver for Cell Processor-Based Blade
4 * (C) Copyright IBM Corp. 2005
6 * Authors : Utz Bacher <utz.bacher@de.ibm.com>
7 * Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2, or (at your option)
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <linux/config.h>
26 #include <linux/compiler.h>
27 #include <linux/crc32.h>
28 #include <linux/delay.h>
29 #include <linux/etherdevice.h>
30 #include <linux/ethtool.h>
31 #include <linux/firmware.h>
32 #include <linux/if_vlan.h>
33 #include <linux/init.h>
34 #include <linux/ioport.h>
36 #include <linux/kernel.h>
37 #include <linux/mii.h>
38 #include <linux/module.h>
39 #include <linux/netdevice.h>
40 #include <linux/device.h>
41 #include <linux/pci.h>
42 #include <linux/skbuff.h>
43 #include <linux/slab.h>
44 #include <linux/tcp.h>
45 #include <linux/types.h>
46 #include <linux/wait.h>
47 #include <linux/workqueue.h>
48 #include <asm/bitops.h>
49 #include <asm/pci-bridge.h>
50 #include <net/checksum.h>
52 #include "spider_net.h"
54 MODULE_AUTHOR("Utz Bacher <utz.bacher@de.ibm.com> and Jens Osterkamp " \
55 "<Jens.Osterkamp@de.ibm.com>");
56 MODULE_DESCRIPTION("Spider Southbridge Gigabit Ethernet driver");
57 MODULE_LICENSE("GPL");
59 static int rx_descriptors
= SPIDER_NET_RX_DESCRIPTORS_DEFAULT
;
60 static int tx_descriptors
= SPIDER_NET_TX_DESCRIPTORS_DEFAULT
;
62 module_param(rx_descriptors
, int, 0644);
63 module_param(tx_descriptors
, int, 0644);
65 MODULE_PARM_DESC(rx_descriptors
, "number of descriptors used " \
67 MODULE_PARM_DESC(tx_descriptors
, "number of descriptors used " \
70 char spider_net_driver_name
[] = "spidernet";
72 static struct pci_device_id spider_net_pci_tbl
[] = {
73 { PCI_VENDOR_ID_TOSHIBA_2
, PCI_DEVICE_ID_TOSHIBA_SPIDER_NET
,
74 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
78 MODULE_DEVICE_TABLE(pci
, spider_net_pci_tbl
);
81 * spider_net_read_reg - reads an SMMIO register of a card
82 * @card: device structure
83 * @reg: register to read from
85 * returns the content of the specified SMMIO register.
88 spider_net_read_reg(struct spider_net_card
*card
, u32 reg
)
92 value
= readl(card
->regs
+ reg
);
93 value
= le32_to_cpu(value
);
99 * spider_net_write_reg - writes to an SMMIO register of a card
100 * @card: device structure
101 * @reg: register to write to
102 * @value: value to write into the specified SMMIO register
105 spider_net_write_reg(struct spider_net_card
*card
, u32 reg
, u32 value
)
107 value
= cpu_to_le32(value
);
108 writel(value
, card
->regs
+ reg
);
112 * spider_net_write_reg_sync - writes to an SMMIO register of a card
113 * @card: device structure
114 * @reg: register to write to
115 * @value: value to write into the specified SMMIO register
117 * Unlike spider_net_write_reg, this will also make sure the
118 * data arrives on the card by reading the reg again.
121 spider_net_write_reg_sync(struct spider_net_card
*card
, u32 reg
, u32 value
)
123 value
= cpu_to_le32(value
);
124 writel(value
, card
->regs
+ reg
);
125 (void)readl(card
->regs
+ reg
);
129 * spider_net_rx_irq_off - switch off rx irq on this spider card
130 * @card: device structure
132 * switches off rx irq by masking them out in the GHIINTnMSK register
135 spider_net_rx_irq_off(struct spider_net_card
*card
)
140 spin_lock_irqsave(&card
->intmask_lock
, flags
);
141 regvalue
= spider_net_read_reg(card
, SPIDER_NET_GHIINT0MSK
);
142 regvalue
&= ~SPIDER_NET_RXINT
;
143 spider_net_write_reg_sync(card
, SPIDER_NET_GHIINT0MSK
, regvalue
);
144 spin_unlock_irqrestore(&card
->intmask_lock
, flags
);
147 /** spider_net_write_phy - write to phy register
148 * @netdev: adapter to be written to
151 * @val: value to be written to phy register
153 * spider_net_write_phy_register writes to an arbitrary PHY
154 * register via the spider GPCWOPCMD register. We assume the queue does
155 * not run full (not more than 15 commands outstanding).
158 spider_net_write_phy(struct net_device
*netdev
, int mii_id
,
161 struct spider_net_card
*card
= netdev_priv(netdev
);
164 writevalue
= ((u32
)mii_id
<< 21) |
165 ((u32
)reg
<< 16) | ((u32
)val
);
167 spider_net_write_reg(card
, SPIDER_NET_GPCWOPCMD
, writevalue
);
170 /** spider_net_read_phy - read from phy register
171 * @netdev: network device to be read from
175 * Returns value read from PHY register
177 * spider_net_write_phy reads from an arbitrary PHY
178 * register via the spider GPCROPCMD register
181 spider_net_read_phy(struct net_device
*netdev
, int mii_id
, int reg
)
183 struct spider_net_card
*card
= netdev_priv(netdev
);
186 readvalue
= ((u32
)mii_id
<< 21) | ((u32
)reg
<< 16);
187 spider_net_write_reg(card
, SPIDER_NET_GPCROPCMD
, readvalue
);
189 /* we don't use semaphores to wait for an SPIDER_NET_GPROPCMPINT
190 * interrupt, as we poll for the completion of the read operation
191 * in spider_net_read_phy. Should take about 50 us */
193 readvalue
= spider_net_read_reg(card
, SPIDER_NET_GPCROPCMD
);
194 } while (readvalue
& SPIDER_NET_GPREXEC
);
196 readvalue
&= SPIDER_NET_GPRDAT_MASK
;
202 * spider_net_rx_irq_on - switch on rx irq on this spider card
203 * @card: device structure
205 * switches on rx irq by enabling them in the GHIINTnMSK register
208 spider_net_rx_irq_on(struct spider_net_card
*card
)
213 spin_lock_irqsave(&card
->intmask_lock
, flags
);
214 regvalue
= spider_net_read_reg(card
, SPIDER_NET_GHIINT0MSK
);
215 regvalue
|= SPIDER_NET_RXINT
;
216 spider_net_write_reg_sync(card
, SPIDER_NET_GHIINT0MSK
, regvalue
);
217 spin_unlock_irqrestore(&card
->intmask_lock
, flags
);
221 * spider_net_tx_irq_off - switch off tx irq on this spider card
222 * @card: device structure
224 * switches off tx irq by masking them out in the GHIINTnMSK register
227 spider_net_tx_irq_off(struct spider_net_card
*card
)
232 spin_lock_irqsave(&card
->intmask_lock
, flags
);
233 regvalue
= spider_net_read_reg(card
, SPIDER_NET_GHIINT0MSK
);
234 regvalue
&= ~SPIDER_NET_TXINT
;
235 spider_net_write_reg_sync(card
, SPIDER_NET_GHIINT0MSK
, regvalue
);
236 spin_unlock_irqrestore(&card
->intmask_lock
, flags
);
240 * spider_net_tx_irq_on - switch on tx irq on this spider card
241 * @card: device structure
243 * switches on tx irq by enabling them in the GHIINTnMSK register
246 spider_net_tx_irq_on(struct spider_net_card
*card
)
251 spin_lock_irqsave(&card
->intmask_lock
, flags
);
252 regvalue
= spider_net_read_reg(card
, SPIDER_NET_GHIINT0MSK
);
253 regvalue
|= SPIDER_NET_TXINT
;
254 spider_net_write_reg_sync(card
, SPIDER_NET_GHIINT0MSK
, regvalue
);
255 spin_unlock_irqrestore(&card
->intmask_lock
, flags
);
259 * spider_net_set_promisc - sets the unicast address or the promiscuous mode
260 * @card: card structure
262 * spider_net_set_promisc sets the unicast destination address filter and
263 * thus either allows for non-promisc mode or promisc mode
266 spider_net_set_promisc(struct spider_net_card
*card
)
269 struct net_device
*netdev
= card
->netdev
;
271 if (netdev
->flags
& IFF_PROMISC
) {
272 /* clear destination entry 0 */
273 spider_net_write_reg(card
, SPIDER_NET_GMRUAFILnR
, 0);
274 spider_net_write_reg(card
, SPIDER_NET_GMRUAFILnR
+ 0x04, 0);
275 spider_net_write_reg(card
, SPIDER_NET_GMRUA0FIL15R
,
276 SPIDER_NET_PROMISC_VALUE
);
278 macu
= netdev
->dev_addr
[0];
280 macu
|= netdev
->dev_addr
[1];
281 memcpy(&macl
, &netdev
->dev_addr
[2], sizeof(macl
));
283 macu
|= SPIDER_NET_UA_DESCR_VALUE
;
284 spider_net_write_reg(card
, SPIDER_NET_GMRUAFILnR
, macu
);
285 spider_net_write_reg(card
, SPIDER_NET_GMRUAFILnR
+ 0x04, macl
);
286 spider_net_write_reg(card
, SPIDER_NET_GMRUA0FIL15R
,
287 SPIDER_NET_NONPROMISC_VALUE
);
292 * spider_net_get_mac_address - read mac address from spider card
293 * @card: device structure
295 * reads MAC address from GMACUNIMACU and GMACUNIMACL registers
298 spider_net_get_mac_address(struct net_device
*netdev
)
300 struct spider_net_card
*card
= netdev_priv(netdev
);
303 macl
= spider_net_read_reg(card
, SPIDER_NET_GMACUNIMACL
);
304 macu
= spider_net_read_reg(card
, SPIDER_NET_GMACUNIMACU
);
306 netdev
->dev_addr
[0] = (macu
>> 24) & 0xff;
307 netdev
->dev_addr
[1] = (macu
>> 16) & 0xff;
308 netdev
->dev_addr
[2] = (macu
>> 8) & 0xff;
309 netdev
->dev_addr
[3] = macu
& 0xff;
310 netdev
->dev_addr
[4] = (macl
>> 8) & 0xff;
311 netdev
->dev_addr
[5] = macl
& 0xff;
313 if (!is_valid_ether_addr(&netdev
->dev_addr
[0]))
320 * spider_net_get_descr_status -- returns the status of a descriptor
321 * @descr: descriptor to look at
323 * returns the status as in the dmac_cmd_status field of the descriptor
325 static enum spider_net_descr_status
326 spider_net_get_descr_status(struct spider_net_descr
*descr
)
330 cmd_status
= descr
->dmac_cmd_status
;
332 cmd_status
>>= SPIDER_NET_DESCR_IND_PROC_SHIFT
;
333 /* no need to mask out any bits, as cmd_status is 32 bits wide only
339 * spider_net_set_descr_status -- sets the status of a descriptor
340 * @descr: descriptor to change
341 * @status: status to set in the descriptor
343 * changes the status to the specified value. Doesn't change other bits
347 spider_net_set_descr_status(struct spider_net_descr
*descr
,
348 enum spider_net_descr_status status
)
351 /* read the status */
353 cmd_status
= descr
->dmac_cmd_status
;
354 /* clean the upper 4 bits */
355 cmd_status
&= SPIDER_NET_DESCR_IND_PROC_MASKO
;
356 /* add the status to it */
357 cmd_status
|= ((u32
)status
)<<SPIDER_NET_DESCR_IND_PROC_SHIFT
;
358 /* and write it back */
359 descr
->dmac_cmd_status
= cmd_status
;
364 * spider_net_free_chain - free descriptor chain
365 * @card: card structure
366 * @chain: address of chain
370 spider_net_free_chain(struct spider_net_card
*card
,
371 struct spider_net_descr_chain
*chain
)
373 struct spider_net_descr
*descr
;
375 for (descr
= chain
->tail
; !descr
->bus_addr
; descr
= descr
->next
) {
376 pci_unmap_single(card
->pdev
, descr
->bus_addr
,
377 SPIDER_NET_DESCR_SIZE
, PCI_DMA_BIDIRECTIONAL
);
383 * spider_net_init_chain - links descriptor chain
384 * @card: card structure
385 * @chain: address of chain
386 * @start_descr: address of descriptor array
387 * @no: number of descriptors
389 * we manage a circular list that mirrors the hardware structure,
390 * except that the hardware uses bus addresses.
392 * returns 0 on success, <0 on failure
395 spider_net_init_chain(struct spider_net_card
*card
,
396 struct spider_net_descr_chain
*chain
,
397 struct spider_net_descr
*start_descr
, int no
)
400 struct spider_net_descr
*descr
;
402 spin_lock_init(&card
->chain_lock
);
405 memset(descr
, 0, sizeof(*descr
) * no
);
407 /* set up the hardware pointers in each descriptor */
408 for (i
=0; i
<no
; i
++, descr
++) {
409 spider_net_set_descr_status(descr
, SPIDER_NET_DESCR_NOT_IN_USE
);
412 pci_map_single(card
->pdev
, descr
,
413 SPIDER_NET_DESCR_SIZE
,
414 PCI_DMA_BIDIRECTIONAL
);
416 if (descr
->bus_addr
== DMA_ERROR_CODE
)
419 descr
->next
= descr
+ 1;
420 descr
->prev
= descr
- 1;
423 /* do actual circular list */
424 (descr
-1)->next
= start_descr
;
425 start_descr
->prev
= descr
-1;
428 for (i
=0; i
< no
; i
++, descr
++) {
429 descr
->next_descr_addr
= descr
->next
->bus_addr
;
432 chain
->head
= start_descr
;
433 chain
->tail
= start_descr
;
439 for (i
=0; i
< no
; i
++, descr
++)
441 pci_unmap_single(card
->pdev
, descr
->bus_addr
,
442 SPIDER_NET_DESCR_SIZE
, PCI_DMA_BIDIRECTIONAL
);
447 * spider_net_free_rx_chain_contents - frees descr contents in rx chain
448 * @card: card structure
450 * returns 0 on success, <0 on failure
453 spider_net_free_rx_chain_contents(struct spider_net_card
*card
)
455 struct spider_net_descr
*descr
;
457 descr
= card
->rx_chain
.head
;
458 while (descr
->next
!= card
->rx_chain
.head
) {
460 dev_kfree_skb(descr
->skb
);
461 pci_unmap_single(card
->pdev
, descr
->buf_addr
,
463 PCI_DMA_BIDIRECTIONAL
);
470 * spider_net_prepare_rx_descr - reinitializes a rx descriptor
471 * @card: card structure
472 * @descr: descriptor to re-init
474 * return 0 on succes, <0 on failure
476 * allocates a new rx skb, iommu-maps it and attaches it to the descriptor.
477 * Activate the descriptor state-wise
480 spider_net_prepare_rx_descr(struct spider_net_card
*card
,
481 struct spider_net_descr
*descr
)
488 /* we need to round up the buffer size to a multiple of 128 */
489 bufsize
= (SPIDER_NET_MAX_MTU
+ SPIDER_NET_RXBUF_ALIGN
- 1) &
490 (~(SPIDER_NET_RXBUF_ALIGN
- 1));
492 /* and we need to have it 128 byte aligned, therefore we allocate a
494 /* allocate an skb */
495 descr
->skb
= dev_alloc_skb(bufsize
+ SPIDER_NET_RXBUF_ALIGN
- 1);
498 if (netif_msg_rx_err(card
))
499 pr_err("Not enough memory to allocate "
503 descr
->buf_size
= bufsize
;
504 descr
->result_size
= 0;
505 descr
->valid_size
= 0;
506 descr
->data_status
= 0;
507 descr
->data_error
= 0;
509 offset
= ((unsigned long)descr
->skb
->data
) &
510 (SPIDER_NET_RXBUF_ALIGN
- 1);
512 skb_reserve(descr
->skb
, SPIDER_NET_RXBUF_ALIGN
- offset
);
513 /* io-mmu-map the skb */
514 buf
= pci_map_single(card
->pdev
, descr
->skb
->data
,
516 PCI_DMA_BIDIRECTIONAL
);
517 descr
->buf_addr
= buf
;
518 if (buf
== DMA_ERROR_CODE
) {
519 dev_kfree_skb_any(descr
->skb
);
520 if (netif_msg_rx_err(card
))
521 pr_err("Could not iommu-map rx buffer\n");
522 spider_net_set_descr_status(descr
, SPIDER_NET_DESCR_NOT_IN_USE
);
524 descr
->dmac_cmd_status
= SPIDER_NET_DMAC_RX_CARDOWNED
;
531 * spider_net_enable_rxctails - sets RX dmac chain tail addresses
532 * @card: card structure
534 * spider_net_enable_rxctails sets the RX DMAC chain tail adresses in the
535 * chip by writing to the appropriate register. DMA is enabled in
536 * spider_net_enable_rxdmac.
539 spider_net_enable_rxchtails(struct spider_net_card
*card
)
541 /* assume chain is aligned correctly */
542 spider_net_write_reg(card
, SPIDER_NET_GDADCHA
,
543 card
->rx_chain
.tail
->bus_addr
);
547 * spider_net_enable_rxdmac - enables a receive DMA controller
548 * @card: card structure
550 * spider_net_enable_rxdmac enables the DMA controller by setting RX_DMA_EN
551 * in the GDADMACCNTR register
554 spider_net_enable_rxdmac(struct spider_net_card
*card
)
556 spider_net_write_reg(card
, SPIDER_NET_GDADMACCNTR
,
557 SPIDER_NET_DMA_RX_VALUE
);
561 * spider_net_refill_rx_chain - refills descriptors/skbs in the rx chains
562 * @card: card structure
564 * refills descriptors in all chains (last used chain first): allocates skbs
565 * and iommu-maps them.
568 spider_net_refill_rx_chain(struct spider_net_card
*card
)
570 struct spider_net_descr_chain
*chain
;
574 chain
= &card
->rx_chain
;
576 spin_lock_irqsave(&card
->chain_lock
, flags
);
577 while (spider_net_get_descr_status(chain
->head
) ==
578 SPIDER_NET_DESCR_NOT_IN_USE
) {
579 if (spider_net_prepare_rx_descr(card
, chain
->head
))
582 chain
->head
= chain
->head
->next
;
584 spin_unlock_irqrestore(&card
->chain_lock
, flags
);
586 /* could be optimized, only do that, if we know the DMA processing
589 spider_net_enable_rxdmac(card
);
593 * spider_net_alloc_rx_skbs - allocates rx skbs in rx descriptor chains
594 * @card: card structure
596 * returns 0 on success, <0 on failure
599 spider_net_alloc_rx_skbs(struct spider_net_card
*card
)
602 struct spider_net_descr_chain
*chain
;
606 chain
= &card
->rx_chain
;
607 /* put at least one buffer into the chain. if this fails,
608 * we've got a problem. if not, spider_net_refill_rx_chain
609 * will do the rest at the end of this function */
610 if (spider_net_prepare_rx_descr(card
, chain
->head
))
613 chain
->head
= chain
->head
->next
;
615 /* this will allocate the rest of the rx buffers; if not, it's
616 * business as usual later on */
617 spider_net_refill_rx_chain(card
);
621 spider_net_free_rx_chain_contents(card
);
626 * spider_net_release_tx_descr - processes a used tx descriptor
627 * @card: card structure
628 * @descr: descriptor to release
630 * releases a used tx descriptor (unmapping, freeing of skb)
633 spider_net_release_tx_descr(struct spider_net_card
*card
,
634 struct spider_net_descr
*descr
)
640 pci_unmap_single(card
->pdev
, descr
->buf_addr
, skb
->len
,
641 PCI_DMA_BIDIRECTIONAL
);
643 dev_kfree_skb_any(skb
);
645 /* set status to not used */
646 spider_net_set_descr_status(descr
, SPIDER_NET_DESCR_NOT_IN_USE
);
650 * spider_net_release_tx_chain - processes sent tx descriptors
651 * @card: adapter structure
652 * @brutal: if set, don't care about whether descriptor seems to be in use
654 * releases the tx descriptors that spider has finished with (if non-brutal)
655 * or simply release tx descriptors (if brutal)
658 spider_net_release_tx_chain(struct spider_net_card
*card
, int brutal
)
660 struct spider_net_descr_chain
*tx_chain
= &card
->tx_chain
;
661 enum spider_net_descr_status status
;
663 spider_net_tx_irq_off(card
);
665 /* no lock for chain needed, if this is only executed once at a time */
668 status
= spider_net_get_descr_status(tx_chain
->tail
);
670 case SPIDER_NET_DESCR_CARDOWNED
:
671 if (!brutal
) goto out
;
672 /* fallthrough, if we release the descriptors
673 * brutally (then we don't care about
674 * SPIDER_NET_DESCR_CARDOWNED) */
675 case SPIDER_NET_DESCR_RESPONSE_ERROR
:
676 case SPIDER_NET_DESCR_PROTECTION_ERROR
:
677 case SPIDER_NET_DESCR_FORCE_END
:
678 if (netif_msg_tx_err(card
))
679 pr_err("%s: forcing end of tx descriptor "
680 "with status x%02x\n",
681 card
->netdev
->name
, status
);
682 card
->netdev_stats
.tx_dropped
++;
685 case SPIDER_NET_DESCR_COMPLETE
:
686 card
->netdev_stats
.tx_packets
++;
687 card
->netdev_stats
.tx_bytes
+=
688 tx_chain
->tail
->skb
->len
;
691 default: /* any other value (== SPIDER_NET_DESCR_NOT_IN_USE) */
694 spider_net_release_tx_descr(card
, tx_chain
->tail
);
695 tx_chain
->tail
= tx_chain
->tail
->next
;
698 netif_wake_queue(card
->netdev
);
701 /* switch on tx irqs (while we are still in the interrupt
702 * handler, so we don't get an interrupt), check again
703 * for done descriptors. This results in fewer interrupts */
704 spider_net_tx_irq_on(card
);
705 status
= spider_net_get_descr_status(tx_chain
->tail
);
707 case SPIDER_NET_DESCR_RESPONSE_ERROR
:
708 case SPIDER_NET_DESCR_PROTECTION_ERROR
:
709 case SPIDER_NET_DESCR_FORCE_END
:
710 case SPIDER_NET_DESCR_COMPLETE
:
720 * spider_net_get_multicast_hash - generates hash for multicast filter table
721 * @addr: multicast address
723 * returns the hash value.
725 * spider_net_get_multicast_hash calculates a hash value for a given multicast
726 * address, that is used to set the multicast filter tables
729 spider_net_get_multicast_hash(struct net_device
*netdev
, __u8
*addr
)
731 /* FIXME: an addr of 01:00:5e:00:00:01 must result in 0xa9,
732 * ff:ff:ff:ff:ff:ff must result in 0xfd */
736 crc
= crc32_be(~0, addr
, netdev
->addr_len
);
746 * spider_net_set_multi - sets multicast addresses and promisc flags
747 * @netdev: interface device structure
749 * spider_net_set_multi configures multicast addresses as needed for the
750 * netdev interface. It also sets up multicast, allmulti and promisc
751 * flags appropriately
754 spider_net_set_multi(struct net_device
*netdev
)
756 struct dev_mc_list
*mc
;
760 struct spider_net_card
*card
= netdev_priv(netdev
);
761 unsigned long bitmask
[SPIDER_NET_MULTICAST_HASHES
/ BITS_PER_LONG
] =
764 spider_net_set_promisc(card
);
766 if (netdev
->flags
& IFF_ALLMULTI
) {
767 for (i
= 0; i
< SPIDER_NET_MULTICAST_HASHES
; i
++) {
773 /* well, we know, what the broadcast hash value is: it's xfd
774 hash = spider_net_get_multicast_hash(netdev, netdev->broadcast); */
775 set_bit(0xfd, bitmask
);
777 for (mc
= netdev
->mc_list
; mc
; mc
= mc
->next
) {
778 hash
= spider_net_get_multicast_hash(netdev
, mc
->dmi_addr
);
779 set_bit(hash
, bitmask
);
783 for (i
= 0; i
< SPIDER_NET_MULTICAST_HASHES
/ 4; i
++) {
785 if (test_bit(i
* 4, bitmask
))
788 if (test_bit(i
* 4 + 1, bitmask
))
791 if (test_bit(i
* 4 + 2, bitmask
))
794 if (test_bit(i
* 4 + 3, bitmask
))
797 spider_net_write_reg(card
, SPIDER_NET_GMRMHFILnR
+ i
* 4, reg
);
802 * spider_net_disable_rxdmac - disables the receive DMA controller
803 * @card: card structure
805 * spider_net_disable_rxdmac terminates processing on the DMA controller by
806 * turing off DMA and issueing a force end
809 spider_net_disable_rxdmac(struct spider_net_card
*card
)
811 spider_net_write_reg(card
, SPIDER_NET_GDADMACCNTR
,
812 SPIDER_NET_DMA_RX_FEND_VALUE
);
816 * spider_net_stop - called upon ifconfig down
817 * @netdev: interface device structure
822 spider_net_stop(struct net_device
*netdev
)
824 struct spider_net_card
*card
= netdev_priv(netdev
);
826 netif_poll_disable(netdev
);
827 netif_carrier_off(netdev
);
828 netif_stop_queue(netdev
);
830 /* disable/mask all interrupts */
831 spider_net_write_reg(card
, SPIDER_NET_GHIINT0MSK
, 0);
832 spider_net_write_reg(card
, SPIDER_NET_GHIINT1MSK
, 0);
833 spider_net_write_reg(card
, SPIDER_NET_GHIINT2MSK
, 0);
835 /* free_irq(netdev->irq, netdev);*/
836 free_irq(to_pci_dev(netdev
->class_dev
.dev
)->irq
, netdev
);
838 spider_net_write_reg(card
, SPIDER_NET_GDTDMACCNTR
,
839 SPIDER_NET_DMA_TX_FEND_VALUE
);
841 /* turn off DMA, force end */
842 spider_net_disable_rxdmac(card
);
845 spider_net_release_tx_chain(card
, 1);
847 spider_net_free_chain(card
, &card
->tx_chain
);
848 spider_net_free_chain(card
, &card
->rx_chain
);
854 * spider_net_get_next_tx_descr - returns the next available tx descriptor
855 * @card: device structure to get descriptor from
857 * returns the address of the next descriptor, or NULL if not available.
859 static struct spider_net_descr
*
860 spider_net_get_next_tx_descr(struct spider_net_card
*card
)
862 /* check, if head points to not-in-use descr */
863 if ( spider_net_get_descr_status(card
->tx_chain
.head
) ==
864 SPIDER_NET_DESCR_NOT_IN_USE
) {
865 return card
->tx_chain
.head
;
872 * spider_net_set_txdescr_cmdstat - sets the tx descriptor command field
873 * @descr: descriptor structure to fill out
874 * @skb: packet to consider
876 * fills out the command and status field of the descriptor structure,
877 * depending on hardware checksum settings. This function assumes a wmb()
878 * has executed before.
881 spider_net_set_txdescr_cmdstat(struct spider_net_descr
*descr
,
884 if (skb
->ip_summed
!= CHECKSUM_HW
) {
885 descr
->dmac_cmd_status
= SPIDER_NET_DMAC_CMDSTAT_NOCS
;
890 * if yes: tcp? udp? */
891 if (skb
->protocol
== htons(ETH_P_IP
)) {
892 if (skb
->nh
.iph
->protocol
== IPPROTO_TCP
) {
893 descr
->dmac_cmd_status
= SPIDER_NET_DMAC_CMDSTAT_TCPCS
;
894 } else if (skb
->nh
.iph
->protocol
== IPPROTO_UDP
) {
895 descr
->dmac_cmd_status
= SPIDER_NET_DMAC_CMDSTAT_UDPCS
;
896 } else { /* the stack should checksum non-tcp and non-udp
897 packets on his own: NETIF_F_IP_CSUM */
898 descr
->dmac_cmd_status
= SPIDER_NET_DMAC_CMDSTAT_NOCS
;
904 * spider_net_prepare_tx_descr - fill tx descriptor with skb data
905 * @card: card structure
906 * @descr: descriptor structure to fill out
907 * @skb: packet to use
909 * returns 0 on success, <0 on failure.
911 * fills out the descriptor structure with skb data and len. Copies data,
912 * if needed (32bit DMA!)
915 spider_net_prepare_tx_descr(struct spider_net_card
*card
,
916 struct spider_net_descr
*descr
,
919 dma_addr_t buf
= pci_map_single(card
->pdev
, skb
->data
,
920 skb
->len
, PCI_DMA_BIDIRECTIONAL
);
921 if (buf
== DMA_ERROR_CODE
) {
922 if (netif_msg_tx_err(card
))
923 pr_err("could not iommu-map packet (%p, %i). "
924 "Dropping packet\n", skb
->data
, skb
->len
);
928 descr
->buf_addr
= buf
;
929 descr
->buf_size
= skb
->len
;
931 descr
->data_status
= 0;
933 /* make sure the above values are in memory before we change the
937 spider_net_set_txdescr_cmdstat(descr
,skb
);
943 * spider_net_kick_tx_dma - enables TX DMA processing
944 * @card: card structure
945 * @descr: descriptor address to enable TX processing at
947 * spider_net_kick_tx_dma writes the current tx chain head as start address
948 * of the tx descriptor chain and enables the transmission DMA engine
951 spider_net_kick_tx_dma(struct spider_net_card
*card
,
952 struct spider_net_descr
*descr
)
954 /* this is the only descriptor in the output chain.
957 spider_net_write_reg(card
, SPIDER_NET_GDTDCHA
,
960 spider_net_write_reg(card
, SPIDER_NET_GDTDMACCNTR
,
961 SPIDER_NET_DMA_TX_VALUE
);
965 * spider_net_xmit - transmits a frame over the device
966 * @skb: packet to send out
967 * @netdev: interface device structure
969 * returns 0 on success, <0 on failure
972 spider_net_xmit(struct sk_buff
*skb
, struct net_device
*netdev
)
974 struct spider_net_card
*card
= netdev_priv(netdev
);
975 struct spider_net_descr
*descr
;
978 descr
= spider_net_get_next_tx_descr(card
);
981 netif_stop_queue(netdev
);
983 descr
= spider_net_get_next_tx_descr(card
);
987 netif_start_queue(netdev
);
990 result
= spider_net_prepare_tx_descr(card
, descr
, skb
);
994 card
->tx_chain
.head
= card
->tx_chain
.head
->next
;
996 /* make sure the status from spider_net_prepare_tx_descr is in
997 * memory before we check out the previous descriptor */
1000 if (spider_net_get_descr_status(descr
->prev
) !=
1001 SPIDER_NET_DESCR_CARDOWNED
)
1002 spider_net_kick_tx_dma(card
, descr
);
1004 return NETDEV_TX_OK
;
1007 card
->netdev_stats
.tx_dropped
++;
1008 return NETDEV_TX_LOCKED
;
1012 * spider_net_do_ioctl - called for device ioctls
1013 * @netdev: interface device structure
1014 * @ifr: request parameter structure for ioctl
1015 * @cmd: command code for ioctl
1017 * returns 0 on success, <0 on failure. Currently, we have no special ioctls.
1018 * -EOPNOTSUPP is returned, if an unknown ioctl was requested
1021 spider_net_do_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
1030 * spider_net_pass_skb_up - takes an skb from a descriptor and passes it on
1031 * @descr: descriptor to process
1032 * @card: card structure
1034 * returns 1 on success, 0 if no packet was passed to the stack
1036 * iommu-unmaps the skb, fills out skb structure and passes the data to the
1037 * stack. The descriptor state is not changed.
1040 spider_net_pass_skb_up(struct spider_net_descr
*descr
,
1041 struct spider_net_card
*card
)
1043 struct sk_buff
*skb
;
1044 struct net_device
*netdev
;
1045 u32 data_status
, data_error
;
1047 data_status
= descr
->data_status
;
1048 data_error
= descr
->data_error
;
1050 netdev
= card
->netdev
;
1052 /* check for errors in the data_error flag */
1053 if ((data_error
& SPIDER_NET_DATA_ERROR_MASK
) &&
1054 netif_msg_rx_err(card
))
1055 pr_err("error in received descriptor found, "
1056 "data_status=x%08x, data_error=x%08x\n",
1057 data_status
, data_error
);
1059 /* prepare skb, unmap descriptor */
1061 pci_unmap_single(card
->pdev
, descr
->buf_addr
, SPIDER_NET_MAX_MTU
,
1062 PCI_DMA_BIDIRECTIONAL
);
1064 /* the cases we'll throw away the packet immediately */
1065 if (data_error
& SPIDER_NET_DESTROY_RX_FLAGS
)
1069 skb_put(skb
, descr
->valid_size
);
1071 /* the card seems to add 2 bytes of junk in front
1072 * of the ethernet frame */
1073 #define SPIDER_MISALIGN 2
1074 skb_pull(skb
, SPIDER_MISALIGN
);
1075 skb
->protocol
= eth_type_trans(skb
, netdev
);
1077 /* checksum offload */
1078 if (card
->options
.rx_csum
) {
1079 if ( (data_status
& SPIDER_NET_DATA_STATUS_CHK_MASK
) &&
1080 (!(data_error
& SPIDER_NET_DATA_ERROR_CHK_MASK
)) )
1081 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1083 skb
->ip_summed
= CHECKSUM_NONE
;
1085 skb
->ip_summed
= CHECKSUM_NONE
;
1088 if (data_status
& SPIDER_NET_VLAN_PACKET
) {
1089 /* further enhancements: HW-accel VLAN
1090 * vlan_hwaccel_receive_skb
1094 /* pass skb up to stack */
1095 netif_receive_skb(skb
);
1097 /* update netdevice statistics */
1098 card
->netdev_stats
.rx_packets
++;
1099 card
->netdev_stats
.rx_bytes
+= skb
->len
;
1105 * spider_net_decode_descr - processes an rx descriptor
1106 * @card: card structure
1108 * returns 1 if a packet has been sent to the stack, otherwise 0
1110 * processes an rx descriptor by iommu-unmapping the data buffer and passing
1111 * the packet up to the stack
1114 spider_net_decode_one_descr(struct spider_net_card
*card
)
1116 enum spider_net_descr_status status
;
1117 struct spider_net_descr
*descr
;
1118 struct spider_net_descr_chain
*chain
;
1121 chain
= &card
->rx_chain
;
1122 descr
= chain
->tail
;
1124 status
= spider_net_get_descr_status(descr
);
1126 if (status
== SPIDER_NET_DESCR_CARDOWNED
) {
1127 /* nothing in the descriptor yet */
1131 if (status
== SPIDER_NET_DESCR_NOT_IN_USE
) {
1132 /* not initialized yet, I bet chain->tail == chain->head
1133 * and the ring is empty */
1134 spider_net_refill_rx_chain(card
);
1138 /* descriptor definitively used -- move on head */
1139 chain
->tail
= descr
->next
;
1142 if ( (status
== SPIDER_NET_DESCR_RESPONSE_ERROR
) ||
1143 (status
== SPIDER_NET_DESCR_PROTECTION_ERROR
) ||
1144 (status
== SPIDER_NET_DESCR_FORCE_END
) ) {
1145 if (netif_msg_rx_err(card
))
1146 pr_err("%s: dropping RX descriptor with state %d\n",
1147 card
->netdev
->name
, status
);
1148 card
->netdev_stats
.rx_dropped
++;
1152 if ( (status
!= SPIDER_NET_DESCR_COMPLETE
) &&
1153 (status
!= SPIDER_NET_DESCR_FRAME_END
) ) {
1154 if (netif_msg_rx_err(card
))
1155 pr_err("%s: RX descriptor with state %d\n",
1156 card
->netdev
->name
, status
);
1160 /* ok, we've got a packet in descr */
1161 result
= spider_net_pass_skb_up(descr
, card
);
1163 spider_net_set_descr_status(descr
, SPIDER_NET_DESCR_NOT_IN_USE
);
1164 /* change the descriptor state: */
1165 spider_net_refill_rx_chain(card
);
1171 * spider_net_poll - NAPI poll function called by the stack to return packets
1172 * @netdev: interface device structure
1173 * @budget: number of packets we can pass to the stack at most
1175 * returns 0 if no more packets available to the driver/stack. Returns 1,
1176 * if the quota is exceeded, but the driver has still packets.
1178 * spider_net_poll returns all packets from the rx descriptors to the stack
1179 * (using netif_receive_skb). If all/enough packets are up, the driver
1180 * reenables interrupts and returns 0. If not, 1 is returned.
1183 spider_net_poll(struct net_device
*netdev
, int *budget
)
1185 struct spider_net_card
*card
= netdev_priv(netdev
);
1186 int packets_to_do
, packets_done
= 0;
1187 int no_more_packets
= 0;
1189 packets_to_do
= min(*budget
, netdev
->quota
);
1191 while (packets_to_do
) {
1192 if (spider_net_decode_one_descr(card
)) {
1196 /* no more packets for the stack */
1197 no_more_packets
= 1;
1202 netdev
->quota
-= packets_done
;
1203 *budget
-= packets_done
;
1205 /* if all packets are in the stack, enable interrupts and return 0 */
1206 /* if not, return 1 */
1207 if (no_more_packets
) {
1208 netif_rx_complete(netdev
);
1209 spider_net_rx_irq_on(card
);
1217 * spider_net_vlan_rx_reg - initializes VLAN structures in the driver and card
1218 * @netdev: interface device structure
1219 * @grp: vlan_group structure that is registered (NULL on destroying interface)
1222 spider_net_vlan_rx_reg(struct net_device
*netdev
, struct vlan_group
*grp
)
1224 /* further enhancement... yet to do */
1229 * spider_net_vlan_rx_add - adds VLAN id to the card filter
1230 * @netdev: interface device structure
1231 * @vid: VLAN id to add
1234 spider_net_vlan_rx_add(struct net_device
*netdev
, uint16_t vid
)
1236 /* further enhancement... yet to do */
1237 /* add vid to card's VLAN filter table */
1242 * spider_net_vlan_rx_kill - removes VLAN id to the card filter
1243 * @netdev: interface device structure
1244 * @vid: VLAN id to remove
1247 spider_net_vlan_rx_kill(struct net_device
*netdev
, uint16_t vid
)
1249 /* further enhancement... yet to do */
1250 /* remove vid from card's VLAN filter table */
1254 * spider_net_get_stats - get interface statistics
1255 * @netdev: interface device structure
1257 * returns the interface statistics residing in the spider_net_card struct
1259 static struct net_device_stats
*
1260 spider_net_get_stats(struct net_device
*netdev
)
1262 struct spider_net_card
*card
= netdev_priv(netdev
);
1263 struct net_device_stats
*stats
= &card
->netdev_stats
;
1268 * spider_net_change_mtu - changes the MTU of an interface
1269 * @netdev: interface device structure
1270 * @new_mtu: new MTU value
1272 * returns 0 on success, <0 on failure
1275 spider_net_change_mtu(struct net_device
*netdev
, int new_mtu
)
1277 /* no need to re-alloc skbs or so -- the max mtu is about 2.3k
1278 * and mtu is outbound only anyway */
1279 if ( (new_mtu
< SPIDER_NET_MIN_MTU
) ||
1280 (new_mtu
> SPIDER_NET_MAX_MTU
) )
1282 netdev
->mtu
= new_mtu
;
1287 * spider_net_set_mac - sets the MAC of an interface
1288 * @netdev: interface device structure
1289 * @ptr: pointer to new MAC address
1291 * Returns 0 on success, <0 on failure. Currently, we don't support this
1292 * and will always return EOPNOTSUPP.
1295 spider_net_set_mac(struct net_device
*netdev
, void *p
)
1297 struct spider_net_card
*card
= netdev_priv(netdev
);
1298 u32 macl
, macu
, regvalue
;
1299 struct sockaddr
*addr
= p
;
1301 if (!is_valid_ether_addr(addr
->sa_data
))
1302 return -EADDRNOTAVAIL
;
1304 /* switch off GMACTPE and GMACRPE */
1305 regvalue
= spider_net_read_reg(card
, SPIDER_NET_GMACOPEMD
);
1306 regvalue
&= ~((1 << 5) | (1 << 6));
1307 spider_net_write_reg(card
, SPIDER_NET_GMACOPEMD
, regvalue
);
1310 macu
= (addr
->sa_data
[0]<<24) + (addr
->sa_data
[1]<<16) +
1311 (addr
->sa_data
[2]<<8) + (addr
->sa_data
[3]);
1312 macl
= (addr
->sa_data
[4]<<8) + (addr
->sa_data
[5]);
1313 spider_net_write_reg(card
, SPIDER_NET_GMACUNIMACU
, macu
);
1314 spider_net_write_reg(card
, SPIDER_NET_GMACUNIMACL
, macl
);
1316 /* switch GMACTPE and GMACRPE back on */
1317 regvalue
= spider_net_read_reg(card
, SPIDER_NET_GMACOPEMD
);
1318 regvalue
|= ((1 << 5) | (1 << 6));
1319 spider_net_write_reg(card
, SPIDER_NET_GMACOPEMD
, regvalue
);
1321 spider_net_set_promisc(card
);
1323 /* look up, whether we have been successful */
1324 if (spider_net_get_mac_address(netdev
))
1325 return -EADDRNOTAVAIL
;
1326 if (memcmp(netdev
->dev_addr
,addr
->sa_data
,netdev
->addr_len
))
1327 return -EADDRNOTAVAIL
;
1333 * spider_net_enable_txdmac - enables a TX DMA controller
1334 * @card: card structure
1336 * spider_net_enable_txdmac enables the TX DMA controller by setting the
1337 * descriptor chain tail address
1340 spider_net_enable_txdmac(struct spider_net_card
*card
)
1342 /* assume chain is aligned correctly */
1343 spider_net_write_reg(card
, SPIDER_NET_GDTDCHA
,
1344 card
->tx_chain
.tail
->bus_addr
);
1348 * spider_net_handle_error_irq - handles errors raised by an interrupt
1349 * @card: card structure
1350 * @status_reg: interrupt status register 0 (GHIINT0STS)
1352 * spider_net_handle_error_irq treats or ignores all error conditions
1353 * found when an interrupt is presented
1356 spider_net_handle_error_irq(struct spider_net_card
*card
, u32 status_reg
)
1358 u32 error_reg1
, error_reg2
;
1362 error_reg1
= spider_net_read_reg(card
, SPIDER_NET_GHIINT1STS
);
1363 error_reg2
= spider_net_read_reg(card
, SPIDER_NET_GHIINT2STS
);
1365 /* check GHIINT0STS ************************************/
1367 for (i
= 0; i
< 32; i
++)
1368 if (status_reg
& (1<<i
))
1371 /* let error_reg1 and error_reg2 evaluation decide, what to do
1372 case SPIDER_NET_PHYINT:
1373 case SPIDER_NET_GMAC2INT:
1374 case SPIDER_NET_GMAC1INT:
1375 case SPIDER_NET_GIPSINT:
1376 case SPIDER_NET_GFIFOINT:
1377 case SPIDER_NET_DMACINT:
1378 case SPIDER_NET_GSYSINT:
1381 case SPIDER_NET_GPWOPCMPINT
:
1382 /* PHY write operation completed */
1385 case SPIDER_NET_GPROPCMPINT
:
1386 /* PHY read operation completed */
1387 /* we don't use semaphores, as we poll for the completion
1388 * of the read operation in spider_net_read_phy. Should take
1392 case SPIDER_NET_GPWFFINT
:
1393 /* PHY command queue full */
1394 if (netif_msg_intr(card
))
1395 pr_err("PHY write queue full\n");
1399 /* case SPIDER_NET_GRMDADRINT: not used. print a message */
1400 /* case SPIDER_NET_GRMARPINT: not used. print a message */
1401 /* case SPIDER_NET_GRMMPINT: not used. print a message */
1403 case SPIDER_NET_GDTDEN0INT
:
1404 /* someone has set TX_DMA_EN to 0 */
1408 case SPIDER_NET_GDDDEN0INT
: /* fallthrough */
1409 case SPIDER_NET_GDCDEN0INT
: /* fallthrough */
1410 case SPIDER_NET_GDBDEN0INT
: /* fallthrough */
1411 case SPIDER_NET_GDADEN0INT
:
1412 /* someone has set RX_DMA_EN to 0 */
1417 case SPIDER_NET_GDDFDCINT
:
1418 case SPIDER_NET_GDCFDCINT
:
1419 case SPIDER_NET_GDBFDCINT
:
1420 case SPIDER_NET_GDAFDCINT
:
1421 /* case SPIDER_NET_GDNMINT: not used. print a message */
1422 /* case SPIDER_NET_GCNMINT: not used. print a message */
1423 /* case SPIDER_NET_GBNMINT: not used. print a message */
1424 /* case SPIDER_NET_GANMINT: not used. print a message */
1425 /* case SPIDER_NET_GRFNMINT: not used. print a message */
1430 case SPIDER_NET_GDTFDCINT
:
1433 case SPIDER_NET_GTTEDINT
:
1436 case SPIDER_NET_GDTDCEINT
:
1437 /* chain end. If a descriptor should be sent, kick off
1439 if (card->tx_chain.tail == card->tx_chain.head)
1440 spider_net_kick_tx_dma(card);
1444 /* case SPIDER_NET_G1TMCNTINT: not used. print a message */
1445 /* case SPIDER_NET_GFREECNTINT: not used. print a message */
1448 /* check GHIINT1STS ************************************/
1450 for (i
= 0; i
< 32; i
++)
1451 if (error_reg1
& (1<<i
))
1454 case SPIDER_NET_GTMFLLINT
:
1455 if (netif_msg_intr(card
))
1456 pr_err("Spider TX RAM full\n");
1459 case SPIDER_NET_GRMFLLINT
:
1460 if (netif_msg_intr(card
))
1461 pr_err("Spider RX RAM full, incoming packets "
1462 "might be discarded !\n");
1463 netif_rx_schedule(card
->netdev
);
1464 spider_net_enable_rxchtails(card
);
1465 spider_net_enable_rxdmac(card
);
1468 /* case SPIDER_NET_GTMSHTINT: problem, print a message */
1469 case SPIDER_NET_GDTINVDINT
:
1470 /* allrighty. tx from previous descr ok */
1473 /* case SPIDER_NET_GRFDFLLINT: print a message down there */
1474 /* case SPIDER_NET_GRFCFLLINT: print a message down there */
1475 /* case SPIDER_NET_GRFBFLLINT: print a message down there */
1476 /* case SPIDER_NET_GRFAFLLINT: print a message down there */
1479 case SPIDER_NET_GDDDCEINT
: /* fallthrough */
1480 case SPIDER_NET_GDCDCEINT
: /* fallthrough */
1481 case SPIDER_NET_GDBDCEINT
: /* fallthrough */
1482 case SPIDER_NET_GDADCEINT
:
1483 if (netif_msg_intr(card
))
1484 pr_err("got descriptor chain end interrupt, "
1485 "restarting DMAC %c.\n",
1486 'D'+i
-SPIDER_NET_GDDDCEINT
);
1487 spider_net_refill_rx_chain(card
);
1491 /* invalid descriptor */
1492 case SPIDER_NET_GDDINVDINT
: /* fallthrough */
1493 case SPIDER_NET_GDCINVDINT
: /* fallthrough */
1494 case SPIDER_NET_GDBINVDINT
: /* fallthrough */
1495 case SPIDER_NET_GDAINVDINT
:
1496 /* could happen when rx chain is full */
1497 spider_net_refill_rx_chain(card
);
1501 /* case SPIDER_NET_GDTRSERINT: problem, print a message */
1502 /* case SPIDER_NET_GDDRSERINT: problem, print a message */
1503 /* case SPIDER_NET_GDCRSERINT: problem, print a message */
1504 /* case SPIDER_NET_GDBRSERINT: problem, print a message */
1505 /* case SPIDER_NET_GDARSERINT: problem, print a message */
1506 /* case SPIDER_NET_GDSERINT: problem, print a message */
1507 /* case SPIDER_NET_GDTPTERINT: problem, print a message */
1508 /* case SPIDER_NET_GDDPTERINT: problem, print a message */
1509 /* case SPIDER_NET_GDCPTERINT: problem, print a message */
1510 /* case SPIDER_NET_GDBPTERINT: problem, print a message */
1511 /* case SPIDER_NET_GDAPTERINT: problem, print a message */
1517 /* check GHIINT2STS ************************************/
1519 for (i
= 0; i
< 32; i
++)
1520 if (error_reg2
& (1<<i
))
1523 /* there is nothing we can (want to) do at this time. Log a
1524 * message, we can switch on and off the specific values later on
1525 case SPIDER_NET_GPROPERINT:
1526 case SPIDER_NET_GMCTCRSNGINT:
1527 case SPIDER_NET_GMCTLCOLINT:
1528 case SPIDER_NET_GMCTTMOTINT:
1529 case SPIDER_NET_GMCRCAERINT:
1530 case SPIDER_NET_GMCRCALERINT:
1531 case SPIDER_NET_GMCRALNERINT:
1532 case SPIDER_NET_GMCROVRINT:
1533 case SPIDER_NET_GMCRRNTINT:
1534 case SPIDER_NET_GMCRRXERINT:
1535 case SPIDER_NET_GTITCSERINT:
1536 case SPIDER_NET_GTIFMTERINT:
1537 case SPIDER_NET_GTIPKTRVKINT:
1538 case SPIDER_NET_GTISPINGINT:
1539 case SPIDER_NET_GTISADNGINT:
1540 case SPIDER_NET_GTISPDNGINT:
1541 case SPIDER_NET_GRIFMTERINT:
1542 case SPIDER_NET_GRIPKTRVKINT:
1543 case SPIDER_NET_GRISPINGINT:
1544 case SPIDER_NET_GRISADNGINT:
1545 case SPIDER_NET_GRISPDNGINT:
1552 if ((show_error
) && (netif_msg_intr(card
)))
1553 pr_err("Got error interrupt, GHIINT0STS = 0x%08x, "
1554 "GHIINT1STS = 0x%08x, GHIINT2STS = 0x%08x\n",
1555 status_reg
, error_reg1
, error_reg2
);
1557 /* clear interrupt sources */
1558 spider_net_write_reg(card
, SPIDER_NET_GHIINT1STS
, error_reg1
);
1559 spider_net_write_reg(card
, SPIDER_NET_GHIINT2STS
, error_reg2
);
1563 * spider_net_interrupt - interrupt handler for spider_net
1564 * @irq: interupt number
1565 * @ptr: pointer to net_device
1566 * @regs: PU registers
1568 * returns IRQ_HANDLED, if interrupt was for driver, or IRQ_NONE, if no
1569 * interrupt found raised by card.
1571 * This is the interrupt handler, that turns off
1572 * interrupts for this device and makes the stack poll the driver
1575 spider_net_interrupt(int irq
, void *ptr
, struct pt_regs
*regs
)
1577 struct net_device
*netdev
= ptr
;
1578 struct spider_net_card
*card
= netdev_priv(netdev
);
1581 status_reg
= spider_net_read_reg(card
, SPIDER_NET_GHIINT0STS
);
1586 if (status_reg
& SPIDER_NET_TXINT
)
1587 spider_net_release_tx_chain(card
, 0);
1589 if (status_reg
& SPIDER_NET_RXINT
) {
1590 spider_net_rx_irq_off(card
);
1591 netif_rx_schedule(netdev
);
1594 /* we do this after rx and tx processing, as we want the tx chain
1595 * processed to see, whether we should restart tx dma processing */
1596 spider_net_handle_error_irq(card
, status_reg
);
1598 /* clear interrupt sources */
1599 spider_net_write_reg(card
, SPIDER_NET_GHIINT0STS
, status_reg
);
1604 #ifdef CONFIG_NET_POLL_CONTROLLER
1606 * spider_net_poll_controller - artificial interrupt for netconsole etc.
1607 * @netdev: interface device structure
1609 * see Documentation/networking/netconsole.txt
1612 spider_net_poll_controller(struct net_device
*netdev
)
1614 disable_irq(netdev
->irq
);
1615 spider_net_interrupt(netdev
->irq
, netdev
, NULL
);
1616 enable_irq(netdev
->irq
);
1618 #endif /* CONFIG_NET_POLL_CONTROLLER */
1621 * spider_net_init_card - initializes the card
1622 * @card: card structure
1624 * spider_net_init_card initializes the card so that other registers can
1628 spider_net_init_card(struct spider_net_card
*card
)
1630 spider_net_write_reg(card
, SPIDER_NET_CKRCTRL
,
1631 SPIDER_NET_CKRCTRL_STOP_VALUE
);
1633 spider_net_write_reg(card
, SPIDER_NET_CKRCTRL
,
1634 SPIDER_NET_CKRCTRL_RUN_VALUE
);
1638 * spider_net_enable_card - enables the card by setting all kinds of regs
1639 * @card: card structure
1641 * spider_net_enable_card sets a lot of SMMIO registers to enable the device
1644 spider_net_enable_card(struct spider_net_card
*card
)
1647 /* the following array consists of (register),(value) pairs
1648 * that are set in this function. A register of 0 ends the list */
1650 { SPIDER_NET_GRESUMINTNUM
, 0 },
1651 { SPIDER_NET_GREINTNUM
, 0 },
1653 /* set interrupt frame number registers */
1654 /* clear the single DMA engine registers first */
1655 { SPIDER_NET_GFAFRMNUM
, SPIDER_NET_GFXFRAMES_VALUE
},
1656 { SPIDER_NET_GFBFRMNUM
, SPIDER_NET_GFXFRAMES_VALUE
},
1657 { SPIDER_NET_GFCFRMNUM
, SPIDER_NET_GFXFRAMES_VALUE
},
1658 { SPIDER_NET_GFDFRMNUM
, SPIDER_NET_GFXFRAMES_VALUE
},
1659 /* then set, what we really need */
1660 { SPIDER_NET_GFFRMNUM
, SPIDER_NET_FRAMENUM_VALUE
},
1662 /* timer counter registers and stuff */
1663 { SPIDER_NET_GFREECNNUM
, 0 },
1664 { SPIDER_NET_GONETIMENUM
, 0 },
1665 { SPIDER_NET_GTOUTFRMNUM
, 0 },
1667 /* RX mode setting */
1668 { SPIDER_NET_GRXMDSET
, SPIDER_NET_RXMODE_VALUE
},
1669 /* TX mode setting */
1670 { SPIDER_NET_GTXMDSET
, SPIDER_NET_TXMODE_VALUE
},
1671 /* IPSEC mode setting */
1672 { SPIDER_NET_GIPSECINIT
, SPIDER_NET_IPSECINIT_VALUE
},
1674 { SPIDER_NET_GFTRESTRT
, SPIDER_NET_RESTART_VALUE
},
1676 { SPIDER_NET_GMRWOLCTRL
, 0 },
1677 { SPIDER_NET_GTESTMD
, 0 },
1679 { SPIDER_NET_GMACINTEN
, 0 },
1681 /* flow control stuff */
1682 { SPIDER_NET_GMACAPAUSE
, SPIDER_NET_MACAPAUSE_VALUE
},
1683 { SPIDER_NET_GMACTXPAUSE
, SPIDER_NET_TXPAUSE_VALUE
},
1685 { SPIDER_NET_GMACBSTLMT
, SPIDER_NET_BURSTLMT_VALUE
},
1690 while (regs
[i
][0]) {
1691 spider_net_write_reg(card
, regs
[i
][0], regs
[i
][1]);
1695 /* clear unicast filter table entries 1 to 14 */
1696 for (i
= 1; i
<= 14; i
++) {
1697 spider_net_write_reg(card
,
1698 SPIDER_NET_GMRUAFILnR
+ i
* 8,
1700 spider_net_write_reg(card
,
1701 SPIDER_NET_GMRUAFILnR
+ i
* 8 + 4,
1705 spider_net_write_reg(card
, SPIDER_NET_GMRUA0FIL15R
, 0x08080000);
1707 spider_net_write_reg(card
, SPIDER_NET_ECMODE
, SPIDER_NET_ECMODE_VALUE
);
1709 /* set chain tail adress for RX chains and
1711 spider_net_enable_rxchtails(card
);
1712 spider_net_enable_rxdmac(card
);
1714 spider_net_write_reg(card
, SPIDER_NET_GRXDMAEN
, SPIDER_NET_WOL_VALUE
);
1716 /* set chain tail adress for TX chain */
1717 spider_net_enable_txdmac(card
);
1719 spider_net_write_reg(card
, SPIDER_NET_GMACLENLMT
,
1720 SPIDER_NET_LENLMT_VALUE
);
1721 spider_net_write_reg(card
, SPIDER_NET_GMACMODE
,
1722 SPIDER_NET_MACMODE_VALUE
);
1723 spider_net_write_reg(card
, SPIDER_NET_GMACOPEMD
,
1724 SPIDER_NET_OPMODE_VALUE
);
1726 /* set interrupt mask registers */
1727 spider_net_write_reg(card
, SPIDER_NET_GHIINT0MSK
,
1728 SPIDER_NET_INT0_MASK_VALUE
);
1729 spider_net_write_reg(card
, SPIDER_NET_GHIINT1MSK
,
1730 SPIDER_NET_INT1_MASK_VALUE
);
1731 spider_net_write_reg(card
, SPIDER_NET_GHIINT2MSK
,
1732 SPIDER_NET_INT2_MASK_VALUE
);
1736 * spider_net_open - called upon ifonfig up
1737 * @netdev: interface device structure
1739 * returns 0 on success, <0 on failure
1741 * spider_net_open allocates all the descriptors and memory needed for
1742 * operation, sets up multicast list and enables interrupts
1745 spider_net_open(struct net_device
*netdev
)
1747 struct spider_net_card
*card
= netdev_priv(netdev
);
1751 if (spider_net_init_chain(card
, &card
->tx_chain
,
1752 card
->descr
, tx_descriptors
))
1753 goto alloc_tx_failed
;
1754 if (spider_net_init_chain(card
, &card
->rx_chain
,
1755 card
->descr
+ tx_descriptors
, rx_descriptors
))
1756 goto alloc_rx_failed
;
1758 /* allocate rx skbs */
1759 if (spider_net_alloc_rx_skbs(card
))
1760 goto alloc_skbs_failed
;
1762 spider_net_set_multi(netdev
);
1764 /* further enhancement: setup hw vlan, if needed */
1767 if (request_irq(netdev
->irq
, spider_net_interrupt
,
1768 SA_SHIRQ
, netdev
->name
, netdev
))
1769 goto register_int_failed
;
1771 spider_net_enable_card(card
);
1773 netif_start_queue(netdev
);
1774 netif_carrier_on(netdev
);
1775 netif_poll_enable(netdev
);
1779 register_int_failed
:
1780 spider_net_free_rx_chain_contents(card
);
1782 spider_net_free_chain(card
, &card
->rx_chain
);
1784 spider_net_free_chain(card
, &card
->tx_chain
);
1790 * spider_net_setup_phy - setup PHY
1791 * @card: card structure
1793 * returns 0 on success, <0 on failure
1795 * spider_net_setup_phy is used as part of spider_net_probe. Sets
1796 * the PHY to 1000 Mbps
1799 spider_net_setup_phy(struct spider_net_card
*card
)
1801 struct mii_phy
*phy
= &card
->phy
;
1803 spider_net_write_reg(card
, SPIDER_NET_GDTDMASEL
,
1804 SPIDER_NET_DMASEL_VALUE
);
1805 spider_net_write_reg(card
, SPIDER_NET_GPCCTRL
,
1806 SPIDER_NET_PHY_CTRL_VALUE
);
1808 phy
->dev
= card
->netdev
;
1809 phy
->mdio_read
= spider_net_read_phy
;
1810 phy
->mdio_write
= spider_net_write_phy
;
1812 mii_phy_probe(phy
, phy
->mii_id
);
1814 if (phy
->def
->ops
->setup_forced
)
1815 phy
->def
->ops
->setup_forced(phy
, SPEED_1000
, DUPLEX_FULL
);
1817 /* the following two writes could be moved to sungem_phy.c */
1818 /* enable fiber mode */
1819 spider_net_write_phy(card
->netdev
, 1, MII_NCONFIG
, 0x9020);
1820 /* LEDs active in both modes, autosense prio = fiber */
1821 spider_net_write_phy(card
->netdev
, 1, MII_NCONFIG
, 0x945f);
1823 /* switch off fibre autoneg */
1824 spider_net_write_phy(card
->netdev
, 1, MII_NCONFIG
, 0xfc01);
1825 spider_net_write_phy(card
->netdev
, 1, 0x0b, 0x0004);
1827 phy
->def
->ops
->read_link(phy
);
1828 pr_info("Found %s with %i Mbps, %s-duplex.\n", phy
->def
->name
,
1829 phy
->speed
, phy
->duplex
==1 ? "Full" : "Half");
1835 * spider_net_download_firmware - loads firmware into the adapter
1836 * @card: card structure
1837 * @firmware: firmware pointer
1839 * spider_net_download_firmware loads the firmware opened by
1840 * spider_net_init_firmware into the adapter.
1843 spider_net_download_firmware(struct spider_net_card
*card
,
1844 const struct firmware
*firmware
)
1847 u32
*fw_ptr
= (u32
*)firmware
->data
;
1849 /* stop sequencers */
1850 spider_net_write_reg(card
, SPIDER_NET_GSINIT
,
1851 SPIDER_NET_STOP_SEQ_VALUE
);
1853 for (sequencer
= 0; sequencer
< 6; sequencer
++) {
1854 spider_net_write_reg(card
,
1855 SPIDER_NET_GSnPRGADR
+ sequencer
* 8, 0);
1856 for (i
= 0; i
< SPIDER_NET_FIRMWARE_LEN
; i
++) {
1857 spider_net_write_reg(card
, SPIDER_NET_GSnPRGDAT
+
1858 sequencer
* 8, *fw_ptr
);
1863 if (spider_net_read_reg(card
, SPIDER_NET_GSINIT
))
1866 spider_net_write_reg(card
, SPIDER_NET_GSINIT
,
1867 SPIDER_NET_RUN_SEQ_VALUE
);
1873 * spider_net_init_firmware - reads in firmware parts
1874 * @card: card structure
1876 * Returns 0 on success, <0 on failure
1878 * spider_net_init_firmware opens the sequencer firmware and does some basic
1879 * checks. This function opens and releases the firmware structure. A call
1880 * to download the firmware is performed before the release.
1884 * spider_fw.bin is expected to be a file containing 6*1024*4 bytes, 4k being
1885 * the program for each sequencer. Use the command
1886 * tail -q -n +2 Seq_code1_0x088.txt Seq_code2_0x090.txt \
1887 * Seq_code3_0x098.txt Seq_code4_0x0A0.txt Seq_code5_0x0A8.txt \
1888 * Seq_code6_0x0B0.txt | xxd -r -p -c4 > spider_fw.bin
1890 * to generate spider_fw.bin, if you have sequencer programs with something
1891 * like the following contents for each sequencer:
1892 * <ONE LINE COMMENT>
1893 * <FIRST 4-BYTES-WORD FOR SEQUENCER>
1894 * <SECOND 4-BYTES-WORD FOR SEQUENCER>
1896 * <1024th 4-BYTES-WORD FOR SEQUENCER>
1899 spider_net_init_firmware(struct spider_net_card
*card
)
1901 struct firmware
*firmware
;
1902 struct device_node
*dn
;
1906 if (request_firmware((const struct firmware
**)&firmware
,
1907 SPIDER_NET_FIRMWARE_NAME
, &card
->pdev
->dev
) < 0) {
1908 if (netif_msg_probe(card
))
1909 pr_err("Couldn't read in sequencer data file %s.\n",
1910 SPIDER_NET_FIRMWARE_NAME
);
1912 dn
= pci_device_to_OF_node(card
->pdev
);
1916 fw_prop
= (u8
*)get_property(dn
, "firmware", NULL
);
1920 memcpy(firmware
->data
, fw_prop
, 6 * SPIDER_NET_FIRMWARE_LEN
* sizeof(u32
));
1921 firmware
->size
= 6 * SPIDER_NET_FIRMWARE_LEN
* sizeof(u32
);
1924 if (firmware
->size
!= 6 * SPIDER_NET_FIRMWARE_LEN
* sizeof(u32
)) {
1925 if (netif_msg_probe(card
))
1926 pr_err("Invalid size of sequencer data file %s.\n",
1927 SPIDER_NET_FIRMWARE_NAME
);
1931 if (!spider_net_download_firmware(card
, firmware
))
1934 release_firmware(firmware
);
1940 * spider_net_workaround_rxramfull - work around firmware bug
1941 * @card: card structure
1946 spider_net_workaround_rxramfull(struct spider_net_card
*card
)
1948 int i
, sequencer
= 0;
1951 spider_net_write_reg(card
, SPIDER_NET_CKRCTRL
,
1952 SPIDER_NET_CKRCTRL_RUN_VALUE
);
1954 /* empty sequencer data */
1955 for (sequencer
= 0; sequencer
< 6; sequencer
++) {
1956 spider_net_write_reg(card
, SPIDER_NET_GSnPRGDAT
+
1957 sequencer
* 8, 0x0);
1958 for (i
= 0; i
< SPIDER_NET_FIRMWARE_LEN
; i
++) {
1959 spider_net_write_reg(card
, SPIDER_NET_GSnPRGDAT
+
1960 sequencer
* 8, 0x0);
1964 /* set sequencer operation */
1965 spider_net_write_reg(card
, SPIDER_NET_GSINIT
, 0x000000fe);
1968 spider_net_write_reg(card
, SPIDER_NET_CKRCTRL
,
1969 SPIDER_NET_CKRCTRL_STOP_VALUE
);
1973 * spider_net_tx_timeout_task - task scheduled by the watchdog timeout
1974 * function (to be called not under interrupt status)
1975 * @data: data, is interface device structure
1977 * called as task when tx hangs, resets interface (if interface is up)
1980 spider_net_tx_timeout_task(void *data
)
1982 struct net_device
*netdev
= data
;
1983 struct spider_net_card
*card
= netdev_priv(netdev
);
1985 if (!(netdev
->flags
& IFF_UP
))
1988 netif_device_detach(netdev
);
1989 spider_net_stop(netdev
);
1991 spider_net_workaround_rxramfull(card
);
1992 spider_net_init_card(card
);
1994 if (spider_net_setup_phy(card
))
1996 if (spider_net_init_firmware(card
))
1999 spider_net_open(netdev
);
2000 spider_net_kick_tx_dma(card
, card
->tx_chain
.head
);
2001 netif_device_attach(netdev
);
2004 atomic_dec(&card
->tx_timeout_task_counter
);
2008 * spider_net_tx_timeout - called when the tx timeout watchdog kicks in.
2009 * @netdev: interface device structure
2011 * called, if tx hangs. Schedules a task that resets the interface
2014 spider_net_tx_timeout(struct net_device
*netdev
)
2016 struct spider_net_card
*card
;
2018 card
= netdev_priv(netdev
);
2019 atomic_inc(&card
->tx_timeout_task_counter
);
2020 if (netdev
->flags
& IFF_UP
)
2021 schedule_work(&card
->tx_timeout_task
);
2023 atomic_dec(&card
->tx_timeout_task_counter
);
2027 * spider_net_setup_netdev_ops - initialization of net_device operations
2028 * @netdev: net_device structure
2030 * fills out function pointers in the net_device structure
2033 spider_net_setup_netdev_ops(struct net_device
*netdev
)
2035 netdev
->open
= &spider_net_open
;
2036 netdev
->stop
= &spider_net_stop
;
2037 netdev
->hard_start_xmit
= &spider_net_xmit
;
2038 netdev
->get_stats
= &spider_net_get_stats
;
2039 netdev
->set_multicast_list
= &spider_net_set_multi
;
2040 netdev
->set_mac_address
= &spider_net_set_mac
;
2041 netdev
->change_mtu
= &spider_net_change_mtu
;
2042 netdev
->do_ioctl
= &spider_net_do_ioctl
;
2044 netdev
->tx_timeout
= &spider_net_tx_timeout
;
2045 netdev
->watchdog_timeo
= SPIDER_NET_WATCHDOG_TIMEOUT
;
2047 netdev
->poll
= &spider_net_poll
;
2048 netdev
->weight
= SPIDER_NET_NAPI_WEIGHT
;
2050 netdev
->vlan_rx_register
= &spider_net_vlan_rx_reg
;
2051 netdev
->vlan_rx_add_vid
= &spider_net_vlan_rx_add
;
2052 netdev
->vlan_rx_kill_vid
= &spider_net_vlan_rx_kill
;
2053 #ifdef CONFIG_NET_POLL_CONTROLLER
2054 /* poll controller */
2055 netdev
->poll_controller
= &spider_net_poll_controller
;
2056 #endif /* CONFIG_NET_POLL_CONTROLLER */
2058 netdev
->ethtool_ops
= &spider_net_ethtool_ops
;
2062 * spider_net_setup_netdev - initialization of net_device
2063 * @card: card structure
2065 * Returns 0 on success or <0 on failure
2067 * spider_net_setup_netdev initializes the net_device structure
2070 spider_net_setup_netdev(struct spider_net_card
*card
)
2073 struct net_device
*netdev
= card
->netdev
;
2074 struct device_node
*dn
;
2075 struct sockaddr addr
;
2078 SET_MODULE_OWNER(netdev
);
2079 SET_NETDEV_DEV(netdev
, &card
->pdev
->dev
);
2081 pci_set_drvdata(card
->pdev
, netdev
);
2082 spin_lock_init(&card
->intmask_lock
);
2083 netdev
->irq
= card
->pdev
->irq
;
2085 card
->options
.rx_csum
= SPIDER_NET_RX_CSUM_DEFAULT
;
2087 spider_net_setup_netdev_ops(netdev
);
2089 netdev
->features
= 0;
2090 /* some time: NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
2091 * NETIF_F_HW_VLAN_FILTER */
2093 netdev
->irq
= card
->pdev
->irq
;
2095 dn
= pci_device_to_OF_node(card
->pdev
);
2099 mac
= (u8
*)get_property(dn
, "local-mac-address", NULL
);
2102 memcpy(addr
.sa_data
, mac
, ETH_ALEN
);
2104 result
= spider_net_set_mac(netdev
, &addr
);
2105 if ((result
) && (netif_msg_probe(card
)))
2106 pr_err("Failed to set MAC address: %i\n", result
);
2108 result
= register_netdev(netdev
);
2110 if (netif_msg_probe(card
))
2111 pr_err("Couldn't register net_device: %i\n",
2116 if (netif_msg_probe(card
))
2117 pr_info("Initialized device %s.\n", netdev
->name
);
2123 * spider_net_alloc_card - allocates net_device and card structure
2125 * returns the card structure or NULL in case of errors
2127 * the card and net_device structures are linked to each other
2129 static struct spider_net_card
*
2130 spider_net_alloc_card(void)
2132 struct net_device
*netdev
;
2133 struct spider_net_card
*card
;
2136 alloc_size
= sizeof (*card
) +
2137 sizeof (struct spider_net_descr
) * rx_descriptors
+
2138 sizeof (struct spider_net_descr
) * tx_descriptors
;
2139 netdev
= alloc_etherdev(alloc_size
);
2143 card
= netdev_priv(netdev
);
2144 card
->netdev
= netdev
;
2145 card
->msg_enable
= SPIDER_NET_DEFAULT_MSG
;
2146 INIT_WORK(&card
->tx_timeout_task
, spider_net_tx_timeout_task
, netdev
);
2147 init_waitqueue_head(&card
->waitq
);
2148 atomic_set(&card
->tx_timeout_task_counter
, 0);
2154 * spider_net_undo_pci_setup - releases PCI ressources
2155 * @card: card structure
2157 * spider_net_undo_pci_setup releases the mapped regions
2160 spider_net_undo_pci_setup(struct spider_net_card
*card
)
2162 iounmap(card
->regs
);
2163 pci_release_regions(card
->pdev
);
2167 * spider_net_setup_pci_dev - sets up the device in terms of PCI operations
2168 * @card: card structure
2171 * Returns the card structure or NULL if any errors occur
2173 * spider_net_setup_pci_dev initializes pdev and together with the
2174 * functions called in spider_net_open configures the device so that
2175 * data can be transferred over it
2176 * The net_device structure is attached to the card structure, if the
2177 * function returns without error.
2179 static struct spider_net_card
*
2180 spider_net_setup_pci_dev(struct pci_dev
*pdev
)
2182 struct spider_net_card
*card
;
2183 unsigned long mmio_start
, mmio_len
;
2185 if (pci_enable_device(pdev
)) {
2186 pr_err("Couldn't enable PCI device\n");
2190 if (!(pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
)) {
2191 pr_err("Couldn't find proper PCI device base address.\n");
2192 goto out_disable_dev
;
2195 if (pci_request_regions(pdev
, spider_net_driver_name
)) {
2196 pr_err("Couldn't obtain PCI resources, aborting.\n");
2197 goto out_disable_dev
;
2200 pci_set_master(pdev
);
2202 card
= spider_net_alloc_card();
2204 pr_err("Couldn't allocate net_device structure, "
2206 goto out_release_regions
;
2210 /* fetch base address and length of first resource */
2211 mmio_start
= pci_resource_start(pdev
, 0);
2212 mmio_len
= pci_resource_len(pdev
, 0);
2214 card
->netdev
->mem_start
= mmio_start
;
2215 card
->netdev
->mem_end
= mmio_start
+ mmio_len
;
2216 card
->regs
= ioremap(mmio_start
, mmio_len
);
2219 pr_err("Couldn't obtain PCI resources, aborting.\n");
2220 goto out_release_regions
;
2225 out_release_regions
:
2226 pci_release_regions(pdev
);
2228 pci_disable_device(pdev
);
2229 pci_set_drvdata(pdev
, NULL
);
2234 * spider_net_probe - initialization of a device
2236 * @ent: entry in the device id list
2238 * Returns 0 on success, <0 on failure
2240 * spider_net_probe initializes pdev and registers a net_device
2241 * structure for it. After that, the device can be ifconfig'ed up
2243 static int __devinit
2244 spider_net_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
2247 struct spider_net_card
*card
;
2249 card
= spider_net_setup_pci_dev(pdev
);
2253 spider_net_workaround_rxramfull(card
);
2254 spider_net_init_card(card
);
2256 err
= spider_net_setup_phy(card
);
2260 err
= spider_net_init_firmware(card
);
2264 err
= spider_net_setup_netdev(card
);
2271 spider_net_undo_pci_setup(card
);
2272 free_netdev(card
->netdev
);
2278 * spider_net_remove - removal of a device
2281 * Returns 0 on success, <0 on failure
2283 * spider_net_remove is called to remove the device and unregisters the
2286 static void __devexit
2287 spider_net_remove(struct pci_dev
*pdev
)
2289 struct net_device
*netdev
;
2290 struct spider_net_card
*card
;
2292 netdev
= pci_get_drvdata(pdev
);
2293 card
= netdev_priv(netdev
);
2295 wait_event(card
->waitq
,
2296 atomic_read(&card
->tx_timeout_task_counter
) == 0);
2298 unregister_netdev(netdev
);
2300 /* switch off card */
2301 spider_net_write_reg(card
, SPIDER_NET_CKRCTRL
,
2302 SPIDER_NET_CKRCTRL_STOP_VALUE
);
2303 spider_net_write_reg(card
, SPIDER_NET_CKRCTRL
,
2304 SPIDER_NET_CKRCTRL_RUN_VALUE
);
2306 spider_net_undo_pci_setup(card
);
2307 free_netdev(netdev
);
2310 static struct pci_driver spider_net_driver
= {
2311 .name
= spider_net_driver_name
,
2312 .id_table
= spider_net_pci_tbl
,
2313 .probe
= spider_net_probe
,
2314 .remove
= __devexit_p(spider_net_remove
)
2318 * spider_net_init - init function when the driver is loaded
2320 * spider_net_init registers the device driver
2322 static int __init
spider_net_init(void)
2324 if (rx_descriptors
< SPIDER_NET_RX_DESCRIPTORS_MIN
) {
2325 rx_descriptors
= SPIDER_NET_RX_DESCRIPTORS_MIN
;
2326 pr_info("adjusting rx descriptors to %i.\n", rx_descriptors
);
2328 if (rx_descriptors
> SPIDER_NET_RX_DESCRIPTORS_MAX
) {
2329 rx_descriptors
= SPIDER_NET_RX_DESCRIPTORS_MAX
;
2330 pr_info("adjusting rx descriptors to %i.\n", rx_descriptors
);
2332 if (tx_descriptors
< SPIDER_NET_TX_DESCRIPTORS_MIN
) {
2333 tx_descriptors
= SPIDER_NET_TX_DESCRIPTORS_MIN
;
2334 pr_info("adjusting tx descriptors to %i.\n", tx_descriptors
);
2336 if (tx_descriptors
> SPIDER_NET_TX_DESCRIPTORS_MAX
) {
2337 tx_descriptors
= SPIDER_NET_TX_DESCRIPTORS_MAX
;
2338 pr_info("adjusting tx descriptors to %i.\n", tx_descriptors
);
2341 return pci_register_driver(&spider_net_driver
);
2345 * spider_net_cleanup - exit function when driver is unloaded
2347 * spider_net_cleanup unregisters the device driver
2349 static void __exit
spider_net_cleanup(void)
2351 pci_unregister_driver(&spider_net_driver
);
2354 module_init(spider_net_init
);
2355 module_exit(spider_net_cleanup
);