4 * Copyright (C) 2006, 2007 OpenWrt.org
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/moduleparam.h>
25 #include <linux/sched.h>
26 #include <linux/kernel.h> /* printk() */
27 #include <linux/slab.h>
28 #include <linux/errno.h>
29 #include <linux/types.h>
30 #include <linux/delay.h>
31 #include <linux/version.h>
33 #include <linux/netdevice.h>
34 #include <linux/etherdevice.h>
35 #include <linux/ethtool.h>
36 #include <linux/skbuff.h>
37 #include <linux/mii.h>
38 #include <linux/phy.h>
39 #include <linux/platform_device.h>
40 #include <asm/ar7/ar7.h>
43 MODULE_AUTHOR("Eugene Konev");
44 MODULE_DESCRIPTION("TI AR7 ethernet driver (CPMAC)");
45 MODULE_LICENSE("GPL");
47 /* Register definitions */
48 struct cpmac_control_regs
{
49 volatile u32 revision
;
51 volatile u32 teardown
;
55 struct cpmac_int_regs
{
56 volatile u32 stat_raw
;
57 volatile u32 stat_masked
;
67 volatile u32 crc_error
;
68 volatile u32 align_error
;
69 volatile u32 oversized
;
71 volatile u32 undersized
;
72 volatile u32 fragment
;
73 volatile u32 filtered
;
74 volatile u32 qos_filtered
;
79 struct cpmac_control_regs tx_ctrl
;
80 struct cpmac_control_regs rx_ctrl
;
81 volatile u32 unused1
[56];
84 #define MBP_RXPASSCRC 0x40000000
85 #define MBP_RXQOS 0x20000000
86 #define MBP_RXNOCHAIN 0x10000000
87 #define MBP_RXCMF 0x01000000
88 #define MBP_RXSHORT 0x00800000
89 #define MBP_RXCEF 0x00400000
90 #define MBP_RXPROMISC 0x00200000
91 #define MBP_PROMISCCHAN(chan) (((chan) & 0x7) << 16)
92 #define MBP_RXBCAST 0x00002000
93 #define MBP_BCASTCHAN(chan) (((chan) & 0x7) << 8)
94 #define MBP_RXMCAST 0x00000020
95 #define MBP_MCASTCHAN(chan) ((chan) & 0x7)
96 volatile u32 unicast_enable
;
97 volatile u32 unicast_clear
;
99 volatile u32 buffer_offset
;
100 volatile u32 filter_flow_threshold
;
101 volatile u32 unused2
[2];
102 volatile u32 flow_thre
[8];
103 volatile u32 free_buffer
[8];
104 volatile u32 mac_control
;
105 #define MAC_TXPTYPE 0x00000200
106 #define MAC_TXPACE 0x00000040
107 #define MAC_MII 0x00000020
108 #define MAC_TXFLOW 0x00000010
109 #define MAC_RXFLOW 0x00000008
110 #define MAC_MTEST 0x00000004
111 #define MAC_LOOPBACK 0x00000002
112 #define MAC_FDX 0x00000001
113 volatile u32 mac_status
;
114 #define MACST_QOS 0x4
115 #define MACST_RXFLOW 0x2
116 #define MACST_TXFLOW 0x1
117 volatile u32 emc_control
;
118 volatile u32 unused3
;
119 struct cpmac_int_regs tx_int
;
120 volatile u32 mac_int_vector
;
121 /* Int Status bits */
122 #define INTST_STATUS 0x80000
123 #define INTST_HOST 0x40000
124 #define INTST_RX 0x20000
125 #define INTST_TX 0x10000
126 volatile u32 mac_eoi_vector
;
127 volatile u32 unused4
[2];
128 struct cpmac_int_regs rx_int
;
129 volatile u32 mac_int_stat_raw
;
130 volatile u32 mac_int_stat_masked
;
131 volatile u32 mac_int_enable
;
132 volatile u32 mac_int_clear
;
133 volatile u32 mac_addr_low
[8];
134 volatile u32 mac_addr_mid
;
135 volatile u32 mac_addr_high
;
136 volatile u32 mac_hash_low
;
137 volatile u32 mac_hash_high
;
138 volatile u32 boff_test
;
139 volatile u32 pac_test
;
140 volatile u32 rx_pause
;
141 volatile u32 tx_pause
;
142 volatile u32 unused5
[2];
143 struct cpmac_stats rx_stats
;
144 struct cpmac_stats tx_stats
;
145 volatile u32 unused6
[232];
146 volatile u32 tx_ptr
[8];
147 volatile u32 rx_ptr
[8];
148 volatile u32 tx_ack
[8];
149 volatile u32 rx_ack
[8];
153 struct cpmac_mdio_regs
{
154 volatile u32 version
;
155 volatile u32 control
;
156 #define MDIOC_IDLE 0x80000000
157 #define MDIOC_ENABLE 0x40000000
158 #define MDIOC_PREAMBLE 0x00100000
159 #define MDIOC_FAULT 0x00080000
160 #define MDIOC_FAULTDETECT 0x00040000
161 #define MDIOC_INTTEST 0x00020000
162 #define MDIOC_CLKDIV(div) ((div) & 0xff)
165 struct cpmac_int_regs link_int
;
166 struct cpmac_int_regs user_int
;
169 #define MDIO_BUSY 0x80000000
170 #define MDIO_WRITE 0x40000000
171 #define MDIO_REG(reg) (((reg) & 0x1f) << 21)
172 #define MDIO_PHY(phy) (((phy) & 0x1f) << 16)
173 #define MDIO_DATA(data) ((data) & 0xffff)
186 #define CPMAC_SOP 0x8000
187 #define CPMAC_EOP 0x4000
188 #define CPMAC_OWN 0x2000
189 #define CPMAC_EOQ 0x1000
192 struct cpmac_desc
*next
;
196 struct net_device_stats stats
;
198 struct sk_buff
*skb_pool
;
200 struct cpmac_desc
*rx_head
, *rx_tail
;
201 int tx_head
, tx_tail
;
202 struct cpmac_desc
*desc_ring
;
203 struct cpmac_regs
*regs
;
204 struct mii_bus
*mii_bus
;
205 struct phy_device
*phy
;
206 char phy_name
[BUS_ID_SIZE
];
207 struct plat_cpmac_data
*config
;
208 int oldlink
, oldspeed
, oldduplex
;
210 struct net_device
*dev
;
211 struct work_struct alloc_work
;
212 struct work_struct reset_work
;
215 static irqreturn_t
cpmac_irq(int, void *);
216 static int cpmac_stop(struct net_device
*dev
);
217 static int cpmac_open(struct net_device
*dev
);
219 #define CPMAC_LOW_THRESH 8
220 #define CPMAC_ALLOC_SIZE 32
221 #define CPMAC_SKB_SIZE 1536
222 #define CPMAC_TX_RING_SIZE 8
223 #define CPMAC_RX_RING_SIZE 16
226 static void cpmac_dump_regs(u32
*base
, int count
)
229 for (i
= 0; i
< (count
+ 3) / 4; i
++) {
230 if (i
% 4 == 0) printk("\nCPMAC[0x%04x]:", i
* 4);
231 printk(" 0x%08x", *(base
+ i
));
237 static int cpmac_mdio_read(struct mii_bus
*bus
, int phy_id
, int regnum
)
239 struct cpmac_mdio_regs
*regs
= (struct cpmac_mdio_regs
*)bus
->priv
;
242 while ((val
= regs
->access
) & MDIO_BUSY
);
243 regs
->access
= MDIO_BUSY
| MDIO_REG(regnum
& 0x1f) |
244 MDIO_PHY(phy_id
& 0x1f);
245 while ((val
= regs
->access
) & MDIO_BUSY
);
250 static int cpmac_mdio_write(struct mii_bus
*bus
, int phy_id
, int regnum
, u16 val
)
252 struct cpmac_mdio_regs
*regs
= (struct cpmac_mdio_regs
*)bus
->priv
;
255 while ((tmp
= regs
->access
) & MDIO_BUSY
);
256 regs
->access
= MDIO_BUSY
| MDIO_WRITE
|
257 MDIO_REG(regnum
& 0x1f) | MDIO_PHY(phy_id
& 0x1f) |
263 static int cpmac_mdio_reset(struct mii_bus
*bus
)
265 struct cpmac_mdio_regs
*regs
= (struct cpmac_mdio_regs
*)bus
->priv
;
267 ar7_device_reset(AR7_RESET_BIT_MDIO
);
268 regs
->control
= MDIOC_ENABLE
|
269 MDIOC_CLKDIV(ar7_cpmac_freq() / 2200000 - 1);
274 static int mii_irqs
[PHY_MAX_ADDR
] = { PHY_POLL
, };
276 static struct mii_bus cpmac_mii
= {
278 .read
= cpmac_mdio_read
,
279 .write
= cpmac_mdio_write
,
280 .reset
= cpmac_mdio_reset
,
284 static int cpmac_config(struct net_device
*dev
, struct ifmap
*map
)
286 if (dev
->flags
& IFF_UP
)
289 /* Don't allow changing the I/O address */
290 if (map
->base_addr
!= dev
->base_addr
)
293 /* ignore other fields */
297 static int cpmac_set_mac_address(struct net_device
*dev
, void *addr
)
299 struct sockaddr
*sa
= addr
;
301 if (dev
->flags
& IFF_UP
)
304 memcpy(dev
->dev_addr
, sa
->sa_data
, dev
->addr_len
);
309 static void cpmac_set_multicast_list(struct net_device
*dev
)
311 struct dev_mc_list
*iter
;
314 int hashlo
= 0, hashhi
= 0;
315 struct cpmac_priv
*priv
= netdev_priv(dev
);
317 if(dev
->flags
& IFF_PROMISC
) {
318 priv
->regs
->mbp
&= ~MBP_PROMISCCHAN(0); /* promisc channel 0 */
319 priv
->regs
->mbp
|= MBP_RXPROMISC
;
321 priv
->regs
->mbp
&= ~MBP_RXPROMISC
;
322 if(dev
->flags
& IFF_ALLMULTI
) {
323 /* enable all multicast mode */
324 priv
->regs
->mac_hash_low
= 0xffffffff;
325 priv
->regs
->mac_hash_high
= 0xffffffff;
327 for(i
= 0, iter
= dev
->mc_list
; i
< dev
->mc_count
;
328 i
++, iter
= iter
->next
) {
330 tmp
= iter
->dmi_addr
[0];
331 hash
^= (tmp
>> 2) ^ (tmp
<< 4);
332 tmp
= iter
->dmi_addr
[1];
333 hash
^= (tmp
>> 4) ^ (tmp
<< 2);
334 tmp
= iter
->dmi_addr
[2];
335 hash
^= (tmp
>> 6) ^ tmp
;
336 tmp
= iter
->dmi_addr
[4];
337 hash
^= (tmp
>> 2) ^ (tmp
<< 4);
338 tmp
= iter
->dmi_addr
[5];
339 hash
^= (tmp
>> 4) ^ (tmp
<< 2);
340 tmp
= iter
->dmi_addr
[6];
341 hash
^= (tmp
>> 6) ^ tmp
;
346 hashhi
|= 1<<(hash
- 32);
350 priv
->regs
->mac_hash_low
= hashlo
;
351 priv
->regs
->mac_hash_high
= hashhi
;
356 static struct sk_buff
*cpmac_get_skb(struct net_device
*dev
)
359 struct cpmac_priv
*priv
= netdev_priv(dev
);
361 skb
= priv
->skb_pool
;
363 priv
->skb_pool
= skb
->next
;
365 if (likely(priv
->free_skbs
))
368 if (priv
->free_skbs
< CPMAC_LOW_THRESH
)
369 schedule_work(&priv
->alloc_work
);
374 static void cpmac_rx(struct net_device
*dev
, int channel
)
378 struct cpmac_desc
*desc
;
379 struct cpmac_desc
*start
;
380 struct cpmac_priv
*priv
= netdev_priv(dev
);
382 spin_lock(&priv
->lock
);
383 if (unlikely(!priv
->rx_head
))
387 desc
= priv
->rx_tail
->next
;
388 dma_cache_inv((u32
)desc
, 16);
390 start
= priv
->rx_tail
;
391 while((desc
->dataflags
& CPMAC_OWN
) == 0) {
392 priv
->regs
->rx_ack
[0] = virt_to_phys(desc
);
393 if (unlikely(!desc
->datalen
)) {
394 if (printk_ratelimit())
395 printk(KERN_NOTICE
"%s: rx: spurious interrupt\n",
397 priv
->stats
.rx_errors
++;
401 skb
= cpmac_get_skb(dev
);
403 data
= (char *)phys_to_virt(desc
->hw_data
);
404 dma_cache_inv((u32
)data
, desc
->datalen
);
405 skb_put(desc
->skb
, desc
->datalen
);
406 desc
->skb
->protocol
= eth_type_trans(desc
->skb
, dev
);
407 desc
->skb
->ip_summed
= CHECKSUM_NONE
;
408 priv
->stats
.rx_packets
++;
409 priv
->stats
.rx_bytes
+= desc
->datalen
;
413 if (printk_ratelimit())
414 printk(KERN_NOTICE
"%s: rx: no free skbs, dropping packet\n",
416 priv
->regs
->rx_ptr
[0] = virt_to_phys(desc
);
417 priv
->stats
.rx_dropped
++;
419 desc
->hw_data
= virt_to_phys(desc
->skb
->data
);
420 desc
->buflen
= CPMAC_SKB_SIZE
;
421 desc
->dataflags
= CPMAC_OWN
;
423 dma_cache_wback((u32
)desc
, 16);
425 priv
->rx_tail
->hw_next
= virt_to_phys(desc
);
426 priv
->rx_tail
->dataflags
= CPMAC_OWN
;
427 dma_cache_wback((u32
)priv
->rx_tail
, 16);
429 priv
->rx_tail
= desc
;
431 dma_cache_inv((u32
)desc
, 16);
433 printk("Somebody set up us the bomb!!\n");
438 priv
->rx_head
= desc
;
439 priv
->regs
->rx_ptr
[0] = virt_to_phys(desc
);
440 spin_unlock(&priv
->lock
);
443 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
445 cpmac_alloc_skbs(struct work_struct
*work
)
447 struct cpmac_priv
*priv
= container_of(work
, struct cpmac_priv
,
451 cpmac_alloc_skbs(void *data
)
453 struct net_device
*dev
= (struct net_device
*)data
;
454 struct cpmac_priv
*priv
= netdev_priv(dev
);
458 struct sk_buff
*skb
, *skbs
= NULL
;
460 for (i
= 0; i
< CPMAC_ALLOC_SIZE
; i
++) {
461 skb
= alloc_skb(CPMAC_SKB_SIZE
+ 2, GFP_KERNEL
);
466 skb
->dev
= priv
->dev
;
472 spin_lock_irqsave(&priv
->lock
, flags
);
473 for (skb
= priv
->skb_pool
; skb
&& skb
->next
; skb
= skb
->next
);
475 priv
->skb_pool
= skbs
;
479 priv
->free_skbs
+= num_skbs
;
480 spin_unlock_irqrestore(&priv
->lock
, flags
);
482 printk("%s: allocated %d skbs\n", priv
->dev
->name
, num_skbs
);
487 static int cpmac_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
491 struct cpmac_desc
*desc
;
492 struct cpmac_priv
*priv
= netdev_priv(dev
);
495 if (unlikely(len
< ETH_ZLEN
)) {
496 if (unlikely(skb_padto(skb
, ETH_ZLEN
))) {
497 if (printk_ratelimit())
498 printk(KERN_NOTICE
"%s: padding failed, dropping\n",
500 spin_lock_irqsave(&priv
->lock
, flags
);
501 priv
->stats
.tx_dropped
++;
502 spin_unlock_irqrestore(&priv
->lock
, flags
);
507 spin_lock_irqsave(&priv
->lock
, flags
);
508 chan
= priv
->tx_tail
++;
510 if (priv
->tx_tail
== priv
->tx_head
)
511 netif_stop_queue(dev
);
513 desc
= &priv
->desc_ring
[chan
];
514 dma_cache_inv((u32
)desc
, 16);
515 if (desc
->dataflags
& CPMAC_OWN
) {
516 printk(KERN_NOTICE
"%s: tx dma ring full, dropping\n", dev
->name
);
517 spin_lock_irqsave(&priv
->lock
, flags
);
518 priv
->stats
.tx_dropped
++;
519 spin_unlock_irqrestore(&priv
->lock
, flags
);
523 dev
->trans_start
= jiffies
;
524 desc
->jiffies
= dev
->trans_start
;
525 spin_unlock_irqrestore(&priv
->lock
, flags
);
527 desc
->dataflags
= CPMAC_SOP
| CPMAC_EOP
| CPMAC_OWN
;
529 desc
->hw_data
= virt_to_phys(skb
->data
);
530 dma_cache_wback((u32
)skb
->data
, len
);
534 dma_cache_wback((u32
)desc
, 16);
535 priv
->regs
->tx_ptr
[chan
] = virt_to_phys(desc
);
539 static void cpmac_end_xmit(struct net_device
*dev
, int channel
)
541 struct cpmac_desc
*desc
;
542 struct cpmac_priv
*priv
= netdev_priv(dev
);
544 spin_lock(&priv
->lock
);
545 desc
= &priv
->desc_ring
[channel
];
546 priv
->regs
->tx_ack
[channel
] = virt_to_phys(desc
);
547 if (likely(desc
->skb
)) {
548 priv
->stats
.tx_packets
++;
549 priv
->stats
.tx_bytes
+= desc
->skb
->len
;
550 dev_kfree_skb_irq(desc
->skb
);
551 if (priv
->tx_head
== channel
) {
552 while ((desc
->dataflags
& CPMAC_OWN
) == 0) {
555 if (priv
->tx_head
== priv
->tx_tail
)
557 desc
= &priv
->desc_ring
[priv
->tx_head
];
560 if (netif_queue_stopped(dev
))
561 netif_wake_queue(dev
);
563 if (printk_ratelimit())
564 printk(KERN_NOTICE
"%s: end_xmit: spurious interrupt\n",
567 spin_unlock(&priv
->lock
);
570 static void cpmac_reset(struct net_device
*dev
)
573 struct cpmac_priv
*priv
= netdev_priv(dev
);
575 ar7_device_reset(priv
->config
->reset_bit
);
576 priv
->regs
->rx_ctrl
.control
&= ~1;
577 priv
->regs
->tx_ctrl
.control
&= ~1;
578 for (i
= 0; i
< 8; i
++) {
579 priv
->regs
->tx_ptr
[i
] = 0;
580 priv
->regs
->rx_ptr
[i
] = 0;
582 priv
->regs
->mac_control
&= ~MAC_MII
; /* disable mii */
585 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
587 cpmac_full_reset(struct work_struct
*work
)
589 struct cpmac_priv
*priv
= container_of(work
, struct cpmac_priv
,
591 struct net_device
*dev
= priv
->dev
;
594 cpmac_full_reset(void *data
)
596 struct net_device
*dev
= (struct net_device
*)data
;
604 static irqreturn_t
cpmac_irq(int irq
, void *dev_id
)
606 struct net_device
*dev
= (struct net_device
*)dev_id
;
607 struct cpmac_priv
*priv
= netdev_priv(dev
);
613 status
= priv
->regs
->mac_int_vector
;
615 if (status
& INTST_TX
) {
616 cpmac_end_xmit(dev
, (status
& 7));
619 if (status
& INTST_RX
) {
620 cpmac_rx(dev
, (status
>> 8) & 7);
623 if (unlikely(status
& INTST_HOST
)) { /* host interrupt ??? */
624 printk("%s: host int, something bad happened - mac status: 0x%08x\n", dev
->name
, priv
->regs
->mac_status
);
628 schedule_work(&priv
->reset_work
);
631 if (unlikely(status
& INTST_STATUS
)) { /* status interrupt ??? */
632 printk("%s: status int, what are we gonna do?\n", dev
->name
);
635 priv
->regs
->mac_eoi_vector
= 0;
640 static void cpmac_tx_timeout(struct net_device
*dev
)
642 struct cpmac_priv
*priv
= netdev_priv(dev
);
643 struct cpmac_desc
*desc
;
645 priv
->stats
.tx_errors
++;
646 desc
= &priv
->desc_ring
[priv
->tx_head
++];
648 printk("Transmit timeout at %ld, latency %ld\n", jiffies
,
649 jiffies
- desc
->jiffies
);
651 dev_kfree_skb(desc
->skb
);
652 netif_wake_queue(dev
);
655 static int cpmac_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
657 struct cpmac_priv
*priv
= netdev_priv(dev
);
658 if (!(netif_running(dev
)))
662 return phy_mii_ioctl(priv
->phy
, if_mii(ifr
), cmd
);
665 static int cpmac_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
667 struct cpmac_priv
*priv
= netdev_priv(dev
);
670 return phy_ethtool_gset(priv
->phy
, cmd
);
675 static int cpmac_set_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
677 struct cpmac_priv
*priv
= netdev_priv(dev
);
679 if (!capable(CAP_NET_ADMIN
))
683 return phy_ethtool_sset(priv
->phy
, cmd
);
688 static void cpmac_get_drvinfo(struct net_device
*dev
,
689 struct ethtool_drvinfo
*info
)
691 strcpy(info
->driver
, "cpmac");
692 strcpy(info
->version
, "0.0.3");
693 info
->fw_version
[0] = '\0';
694 sprintf(info
->bus_info
, "%s", "cpmac");
695 info
->regdump_len
= 0;
698 static const struct ethtool_ops cpmac_ethtool_ops
= {
699 .get_settings
= cpmac_get_settings
,
700 .set_settings
= cpmac_set_settings
,
701 .get_drvinfo
= cpmac_get_drvinfo
,
702 .get_link
= ethtool_op_get_link
,
705 static struct net_device_stats
*cpmac_stats(struct net_device
*dev
)
707 struct cpmac_priv
*priv
= netdev_priv(dev
);
709 if (netif_device_present(dev
))
715 static int cpmac_change_mtu(struct net_device
*dev
, int mtu
)
718 struct cpmac_priv
*priv
= netdev_priv(dev
);
719 spinlock_t
*lock
= &priv
->lock
;
721 if ((mtu
< 68) || (mtu
> 1500))
724 spin_lock_irqsave(lock
, flags
);
726 spin_unlock_irqrestore(lock
, flags
);
731 static void cpmac_adjust_link(struct net_device
*dev
)
733 struct cpmac_priv
*priv
= netdev_priv(dev
);
737 spin_lock_irqsave(&priv
->lock
, flags
);
738 if (priv
->phy
->link
) {
739 if (priv
->phy
->duplex
!= priv
->oldduplex
) {
741 priv
->oldduplex
= priv
->phy
->duplex
;
744 if (priv
->phy
->speed
!= priv
->oldspeed
) {
746 priv
->oldspeed
= priv
->phy
->speed
;
749 if (!priv
->oldlink
) {
754 } else if (priv
->oldlink
) {
758 priv
->oldduplex
= -1;
762 phy_print_status(priv
->phy
);
764 spin_unlock_irqrestore(&priv
->lock
, flags
);
767 static int cpmac_open(struct net_device
*dev
)
770 struct cpmac_priv
*priv
= netdev_priv(dev
);
771 struct cpmac_desc
*desc
;
774 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
775 priv
->phy
= phy_connect(dev
, priv
->phy_name
, &cpmac_adjust_link
,
776 0, PHY_INTERFACE_MODE_MII
);
778 priv
->phy
= phy_connect(dev
, priv
->phy_name
, &cpmac_adjust_link
, 0);
780 if (IS_ERR(priv
->phy
)) {
781 printk(KERN_ERR
"%s: Could not attach to PHY\n", dev
->name
);
782 return PTR_ERR(priv
->phy
);
785 if (!request_mem_region(dev
->mem_start
, dev
->mem_end
-
786 dev
->mem_start
, dev
->name
)) {
787 printk("%s: failed to request registers\n",
793 priv
->regs
= ioremap_nocache(dev
->mem_start
, dev
->mem_end
-
796 printk("%s: failed to remap registers\n", dev
->name
);
801 priv
->rx_head
= NULL
;
802 size
= sizeof(struct cpmac_desc
) * (CPMAC_RX_RING_SIZE
+
804 priv
->desc_ring
= (struct cpmac_desc
*)kmalloc(size
, GFP_KERNEL
);
805 if (!priv
->desc_ring
) {
810 memset((char *)priv
->desc_ring
, 0, size
);
812 priv
->skb_pool
= NULL
;
814 priv
->rx_head
= &priv
->desc_ring
[CPMAC_TX_RING_SIZE
];
816 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
817 INIT_WORK(&priv
->alloc_work
, cpmac_alloc_skbs
);
818 INIT_WORK(&priv
->reset_work
, cpmac_full_reset
);
820 INIT_WORK(&priv
->alloc_work
, cpmac_alloc_skbs
, dev
);
821 INIT_WORK(&priv
->reset_work
, cpmac_full_reset
, dev
);
823 schedule_work(&priv
->alloc_work
);
824 flush_scheduled_work();
826 for (i
= 0; i
< CPMAC_RX_RING_SIZE
; i
++) {
827 desc
= &priv
->rx_head
[i
];
828 skb
= cpmac_get_skb(dev
);
834 desc
->hw_data
= virt_to_phys(skb
->data
);
835 desc
->buflen
= CPMAC_SKB_SIZE
;
836 desc
->dataflags
= CPMAC_OWN
;
837 desc
->next
= &priv
->rx_head
[i
+ 1];
838 desc
->hw_next
= virt_to_phys(desc
->next
);
839 dma_cache_wback((u32
)desc
, 16);
841 priv
->rx_tail
= &priv
->rx_head
[CPMAC_RX_RING_SIZE
- 1];
842 priv
->rx_tail
->next
= priv
->rx_head
;
843 priv
->rx_tail
->hw_next
= 0;
846 for (i
= 0; i
< 8; i
++)
847 priv
->regs
->tx_ptr
[i
] = 0;
848 priv
->regs
->rx_ptr
[0] = virt_to_phys(priv
->rx_head
);
850 priv
->regs
->mbp
= MBP_RXSHORT
| MBP_RXBCAST
| MBP_RXMCAST
;
851 priv
->regs
->unicast_enable
= 0x1;
852 priv
->regs
->unicast_clear
= 0xfe;
853 priv
->regs
->buffer_offset
= 0;
854 for (i
= 0; i
< 8; i
++)
855 priv
->regs
->mac_addr_low
[i
] = dev
->dev_addr
[5];
856 priv
->regs
->mac_addr_mid
= dev
->dev_addr
[4];
857 priv
->regs
->mac_addr_high
= dev
->dev_addr
[0] | (dev
->dev_addr
[1] << 8)
858 | (dev
->dev_addr
[2] << 16) | (dev
->dev_addr
[3] << 24);
859 priv
->regs
->max_len
= CPMAC_SKB_SIZE
;
860 priv
->regs
->rx_int
.enable
= 0x1;
861 priv
->regs
->rx_int
.clear
= 0xfe;
862 priv
->regs
->tx_int
.enable
= 0xff;
863 priv
->regs
->tx_int
.clear
= 0;
864 priv
->regs
->mac_int_enable
= 3;
865 priv
->regs
->mac_int_clear
= 0xfc;
867 if((res
= request_irq(dev
->irq
, cpmac_irq
, SA_INTERRUPT
,
869 printk("%s: failed to obtain irq\n", dev
->name
);
873 priv
->regs
->rx_ctrl
.control
|= 1;
874 priv
->regs
->tx_ctrl
.control
|= 1;
875 priv
->regs
->mac_control
|= MAC_MII
| MAC_FDX
;
877 priv
->phy
->state
= PHY_CHANGELINK
;
878 phy_start(priv
->phy
);
880 netif_start_queue(dev
);
885 for (i
= 0; i
< CPMAC_RX_RING_SIZE
; i
++)
886 if (priv
->rx_head
[i
].skb
)
887 kfree_skb(priv
->rx_head
[i
].skb
);
889 kfree(priv
->desc_ring
);
891 for (skb
= priv
->skb_pool
; skb
; skb
= priv
->skb_pool
) {
892 priv
->skb_pool
= skb
->next
;
899 release_mem_region(dev
->mem_start
, dev
->mem_end
-
903 phy_disconnect(priv
->phy
);
908 static int cpmac_stop(struct net_device
*dev
)
912 struct cpmac_priv
*priv
= netdev_priv(dev
);
914 netif_stop_queue(dev
);
917 phy_disconnect(priv
->phy
);
922 for (i
= 0; i
< 8; i
++) {
923 priv
->regs
->rx_ptr
[i
] = 0;
924 priv
->regs
->tx_ptr
[i
] = 0;
928 free_irq(dev
->irq
, dev
);
929 release_mem_region(dev
->mem_start
, dev
->mem_end
-
932 cancel_delayed_work(&priv
->alloc_work
);
933 flush_scheduled_work();
935 priv
->rx_head
= &priv
->desc_ring
[CPMAC_TX_RING_SIZE
];
936 for (i
= 0; i
< CPMAC_RX_RING_SIZE
; i
++)
937 if (priv
->rx_head
[i
].skb
)
938 kfree_skb(priv
->rx_head
[i
].skb
);
940 kfree(priv
->desc_ring
);
942 for (skb
= priv
->skb_pool
; skb
; skb
= priv
->skb_pool
) {
943 priv
->skb_pool
= skb
->next
;
950 static int external_switch
= 0;
952 static int __devinit
cpmac_probe(struct platform_device
*pdev
)
955 struct resource
*res
;
956 struct cpmac_priv
*priv
;
957 struct net_device
*dev
;
958 struct plat_cpmac_data
*pdata
;
960 if (strcmp(pdev
->name
, "cpmac") != 0)
963 pdata
= pdev
->dev
.platform_data
;
965 for (phy_id
= 0; phy_id
< PHY_MAX_ADDR
; phy_id
++) {
966 if (!(pdata
->phy_mask
& (1 << phy_id
)))
968 if (!cpmac_mii
.phy_map
[phy_id
])
973 if (phy_id
== PHY_MAX_ADDR
) {
974 if (external_switch
) {
977 printk("cpmac: no PHY present\n");
982 dev
= alloc_etherdev(sizeof(struct cpmac_priv
));
985 printk(KERN_ERR
"cpmac: Unable to allocate net_device structure!\n");
989 SET_MODULE_OWNER(dev
);
990 platform_set_drvdata(pdev
, dev
);
991 priv
= netdev_priv(dev
);
993 res
= platform_get_resource_byname(pdev
, IORESOURCE_MEM
, "regs");
999 dev
->mem_start
= res
->start
;
1000 dev
->mem_end
= res
->end
;
1001 dev
->irq
= platform_get_irq_byname(pdev
, "irq");
1004 dev
->open
= cpmac_open
;
1005 dev
->stop
= cpmac_stop
;
1006 dev
->set_config
= cpmac_config
;
1007 dev
->hard_start_xmit
= cpmac_start_xmit
;
1008 dev
->do_ioctl
= cpmac_ioctl
;
1009 dev
->get_stats
= cpmac_stats
;
1010 dev
->change_mtu
= cpmac_change_mtu
;
1011 dev
->set_mac_address
= cpmac_set_mac_address
;
1012 dev
->set_multicast_list
= cpmac_set_multicast_list
;
1013 dev
->tx_timeout
= cpmac_tx_timeout
;
1014 dev
->ethtool_ops
= &cpmac_ethtool_ops
;
1016 memset(priv
, 0, sizeof(struct cpmac_priv
));
1017 spin_lock_init(&priv
->lock
);
1018 priv
->msg_enable
= netif_msg_init(NETIF_MSG_WOL
, 0x3fff);
1019 priv
->config
= pdata
;
1021 memcpy(dev
->dev_addr
, priv
->config
->dev_addr
, sizeof(dev
->dev_addr
));
1023 snprintf(priv
->phy_name
, BUS_ID_SIZE
, PHY_ID_FMT
,
1024 cpmac_mii
.id
, phy_id
);
1026 snprintf(priv
->phy_name
, BUS_ID_SIZE
, "fixed@%d:%d", 100, 1);
1029 if ((rc
= register_netdev(dev
))) {
1030 printk("cpmac: error %i registering device %s\n",
1035 printk("cpmac: device %s (regs: %p, irq: %d, phy: %s, mac: ",
1036 dev
->name
, (u32
*)dev
->mem_start
, dev
->irq
,
1038 for (i
= 0; i
< 6; i
++) {
1039 printk("%02x", dev
->dev_addr
[i
]);
1040 if (i
< 5) printk(":");
1051 static int __devexit
cpmac_remove(struct platform_device
*pdev
)
1053 struct net_device
*dev
= platform_get_drvdata(pdev
);
1054 unregister_netdev(dev
);
1059 static struct platform_driver cpmac_driver
= {
1060 .driver
.name
= "cpmac",
1061 .probe
= cpmac_probe
,
1062 .remove
= cpmac_remove
,
1065 int __devinit
cpmac_init(void)
1069 cpmac_mii
.priv
= (struct cpmac_mdio_regs
*)
1070 ioremap_nocache(AR7_REGS_MDIO
, sizeof(struct cpmac_mdio_regs
));
1072 if (!cpmac_mii
.priv
) {
1073 printk("Can't ioremap mdio registers\n");
1077 #warning FIXME: unhardcode gpio&reset bits
1078 ar7_gpio_disable(26);
1079 ar7_gpio_disable(27);
1080 ar7_device_reset(17);
1081 ar7_device_reset(21);
1082 ar7_device_reset(26);
1084 cpmac_mii
.reset(&cpmac_mii
);
1086 for (i
= 0; i
< 300000; i
++) {
1087 mask
= ((struct cpmac_mdio_regs
*)cpmac_mii
.priv
)->alive
;
1093 if (mask
& (mask
- 1)) {
1094 external_switch
= 1;
1098 cpmac_mii
.phy_mask
= ~(mask
| 0x80000000);
1100 res
= mdiobus_register(&cpmac_mii
);
1104 res
= platform_driver_register(&cpmac_driver
);
1111 mdiobus_unregister(&cpmac_mii
);
1114 iounmap(cpmac_mii
.priv
);
1119 void __devexit
cpmac_exit(void)
1121 platform_driver_unregister(&cpmac_driver
);
1122 mdiobus_unregister(&cpmac_mii
);
1125 module_init(cpmac_init
);
1126 module_exit(cpmac_exit
);