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git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/net/cpsw.c
2 * CPSW Ethernet Switch Driver
4 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
10 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
24 #include <asm/errno.h>
28 #define BITMASK(bits) (BIT(bits) - 1)
29 #define PHY_REG_MASK 0x1f
30 #define PHY_ID_MASK 0x1f
31 #define NUM_DESCS (PKTBUFSRX * 2)
33 #define PKT_MAX (1500 + 14 + 4 + 4)
35 #define GIGABITEN BIT(7)
36 #define FULLDUPLEXEN BIT(0)
40 #define CPDMA_TXCONTROL 0x004
41 #define CPDMA_RXCONTROL 0x014
42 #define CPDMA_SOFTRESET 0x01c
43 #define CPDMA_RXFREE 0x0e0
44 #define CPDMA_TXHDP_VER1 0x100
45 #define CPDMA_TXHDP_VER2 0x200
46 #define CPDMA_RXHDP_VER1 0x120
47 #define CPDMA_RXHDP_VER2 0x220
48 #define CPDMA_TXCP_VER1 0x140
49 #define CPDMA_TXCP_VER2 0x240
50 #define CPDMA_RXCP_VER1 0x160
51 #define CPDMA_RXCP_VER2 0x260
53 #define CPDMA_RAM_ADDR 0x4a102000
55 /* Descriptor mode bits */
56 #define CPDMA_DESC_SOP BIT(31)
57 #define CPDMA_DESC_EOP BIT(30)
58 #define CPDMA_DESC_OWNER BIT(29)
59 #define CPDMA_DESC_EOQ BIT(28)
62 * This timeout definition is a worst-case ultra defensive measure against
63 * unexpected controller lock ups. Ideally, we should never ever hit this
64 * scenario in practice.
66 #define MDIO_TIMEOUT 100 /* msecs */
67 #define CPDMA_TIMEOUT 100 /* msecs */
69 struct cpsw_mdio_regs
{
72 #define CONTROL_IDLE BIT(31)
73 #define CONTROL_ENABLE BIT(30)
89 #define USERACCESS_GO BIT(31)
90 #define USERACCESS_WRITE BIT(30)
91 #define USERACCESS_ACK BIT(29)
92 #define USERACCESS_READ (0)
93 #define USERACCESS_DATA (0xffff)
105 struct cpsw_slave_regs
{
116 struct cpsw_host_regs
{
122 u32 cpdma_tx_pri_map
;
123 u32 cpdma_rx_chan_map
;
126 struct cpsw_sliver_regs
{
139 #define ALE_ENTRY_BITS 68
140 #define ALE_ENTRY_WORDS DIV_ROUND_UP(ALE_ENTRY_BITS, 32)
143 #define ALE_CONTROL 0x08
144 #define ALE_UNKNOWNVLAN 0x18
145 #define ALE_TABLE_CONTROL 0x20
146 #define ALE_TABLE 0x34
147 #define ALE_PORTCTL 0x40
149 #define ALE_TABLE_WRITE BIT(31)
151 #define ALE_TYPE_FREE 0
152 #define ALE_TYPE_ADDR 1
153 #define ALE_TYPE_VLAN 2
154 #define ALE_TYPE_VLAN_ADDR 3
156 #define ALE_UCAST_PERSISTANT 0
157 #define ALE_UCAST_UNTOUCHED 1
158 #define ALE_UCAST_OUI 2
159 #define ALE_UCAST_TOUCHED 3
161 #define ALE_MCAST_FWD 0
162 #define ALE_MCAST_BLOCK_LEARN_FWD 1
163 #define ALE_MCAST_FWD_LEARN 2
164 #define ALE_MCAST_FWD_2 3
166 enum cpsw_ale_port_state
{
167 ALE_PORT_STATE_DISABLE
= 0x00,
168 ALE_PORT_STATE_BLOCK
= 0x01,
169 ALE_PORT_STATE_LEARN
= 0x02,
170 ALE_PORT_STATE_FORWARD
= 0x03,
173 /* ALE unicast entry flags - passed into cpsw_ale_add_ucast() */
175 #define ALE_BLOCKED 2
178 struct cpsw_slave_regs
*regs
;
179 struct cpsw_sliver_regs
*sliver
;
182 struct cpsw_slave_data
*data
;
186 /* hardware fields */
191 /* software fields */
197 struct cpdma_desc
*head
, *tail
;
198 void *hdp
, *cp
, *rxfree
;
201 #define desc_write(desc, fld, val) __raw_writel((u32)(val), &(desc)->fld)
202 #define desc_read(desc, fld) __raw_readl(&(desc)->fld)
203 #define desc_read_ptr(desc, fld) ((void *)__raw_readl(&(desc)->fld))
205 #define chan_write(chan, fld, val) __raw_writel((u32)(val), (chan)->fld)
206 #define chan_read(chan, fld) __raw_readl((chan)->fld)
207 #define chan_read_ptr(chan, fld) ((void *)__raw_readl((chan)->fld))
209 #define for_each_slave(slave, priv) \
210 for (slave = (priv)->slaves; slave != (priv)->slaves + \
211 (priv)->data.slaves; slave++)
214 struct eth_device
*dev
;
215 struct cpsw_platform_data data
;
218 struct cpsw_regs
*regs
;
220 struct cpsw_host_regs
*host_port_regs
;
223 struct cpdma_desc
*descs
;
224 struct cpdma_desc
*desc_free
;
225 struct cpdma_chan rx_chan
, tx_chan
;
227 struct cpsw_slave
*slaves
;
228 struct phy_device
*phydev
;
232 static inline int cpsw_ale_get_field(u32
*ale_entry
, u32 start
, u32 bits
)
238 idx
= 2 - idx
; /* flip */
239 return (ale_entry
[idx
] >> start
) & BITMASK(bits
);
242 static inline void cpsw_ale_set_field(u32
*ale_entry
, u32 start
, u32 bits
,
247 value
&= BITMASK(bits
);
250 idx
= 2 - idx
; /* flip */
251 ale_entry
[idx
] &= ~(BITMASK(bits
) << start
);
252 ale_entry
[idx
] |= (value
<< start
);
255 #define DEFINE_ALE_FIELD(name, start, bits) \
256 static inline int cpsw_ale_get_##name(u32 *ale_entry) \
258 return cpsw_ale_get_field(ale_entry, start, bits); \
260 static inline void cpsw_ale_set_##name(u32 *ale_entry, u32 value) \
262 cpsw_ale_set_field(ale_entry, start, bits, value); \
265 DEFINE_ALE_FIELD(entry_type
, 60, 2)
266 DEFINE_ALE_FIELD(mcast_state
, 62, 2)
267 DEFINE_ALE_FIELD(port_mask
, 66, 3)
268 DEFINE_ALE_FIELD(ucast_type
, 62, 2)
269 DEFINE_ALE_FIELD(port_num
, 66, 2)
270 DEFINE_ALE_FIELD(blocked
, 65, 1)
271 DEFINE_ALE_FIELD(secure
, 64, 1)
272 DEFINE_ALE_FIELD(mcast
, 40, 1)
274 /* The MAC address field in the ALE entry cannot be macroized as above */
275 static inline void cpsw_ale_get_addr(u32
*ale_entry
, u8
*addr
)
279 for (i
= 0; i
< 6; i
++)
280 addr
[i
] = cpsw_ale_get_field(ale_entry
, 40 - 8*i
, 8);
283 static inline void cpsw_ale_set_addr(u32
*ale_entry
, u8
*addr
)
287 for (i
= 0; i
< 6; i
++)
288 cpsw_ale_set_field(ale_entry
, 40 - 8*i
, 8, addr
[i
]);
291 static int cpsw_ale_read(struct cpsw_priv
*priv
, int idx
, u32
*ale_entry
)
295 __raw_writel(idx
, priv
->ale_regs
+ ALE_TABLE_CONTROL
);
297 for (i
= 0; i
< ALE_ENTRY_WORDS
; i
++)
298 ale_entry
[i
] = __raw_readl(priv
->ale_regs
+ ALE_TABLE
+ 4 * i
);
303 static int cpsw_ale_write(struct cpsw_priv
*priv
, int idx
, u32
*ale_entry
)
307 for (i
= 0; i
< ALE_ENTRY_WORDS
; i
++)
308 __raw_writel(ale_entry
[i
], priv
->ale_regs
+ ALE_TABLE
+ 4 * i
);
310 __raw_writel(idx
| ALE_TABLE_WRITE
, priv
->ale_regs
+ ALE_TABLE_CONTROL
);
315 static int cpsw_ale_match_addr(struct cpsw_priv
*priv
, u8
* addr
)
317 u32 ale_entry
[ALE_ENTRY_WORDS
];
320 for (idx
= 0; idx
< priv
->data
.ale_entries
; idx
++) {
323 cpsw_ale_read(priv
, idx
, ale_entry
);
324 type
= cpsw_ale_get_entry_type(ale_entry
);
325 if (type
!= ALE_TYPE_ADDR
&& type
!= ALE_TYPE_VLAN_ADDR
)
327 cpsw_ale_get_addr(ale_entry
, entry_addr
);
328 if (memcmp(entry_addr
, addr
, 6) == 0)
334 static int cpsw_ale_match_free(struct cpsw_priv
*priv
)
336 u32 ale_entry
[ALE_ENTRY_WORDS
];
339 for (idx
= 0; idx
< priv
->data
.ale_entries
; idx
++) {
340 cpsw_ale_read(priv
, idx
, ale_entry
);
341 type
= cpsw_ale_get_entry_type(ale_entry
);
342 if (type
== ALE_TYPE_FREE
)
348 static int cpsw_ale_find_ageable(struct cpsw_priv
*priv
)
350 u32 ale_entry
[ALE_ENTRY_WORDS
];
353 for (idx
= 0; idx
< priv
->data
.ale_entries
; idx
++) {
354 cpsw_ale_read(priv
, idx
, ale_entry
);
355 type
= cpsw_ale_get_entry_type(ale_entry
);
356 if (type
!= ALE_TYPE_ADDR
&& type
!= ALE_TYPE_VLAN_ADDR
)
358 if (cpsw_ale_get_mcast(ale_entry
))
360 type
= cpsw_ale_get_ucast_type(ale_entry
);
361 if (type
!= ALE_UCAST_PERSISTANT
&&
362 type
!= ALE_UCAST_OUI
)
368 static int cpsw_ale_add_ucast(struct cpsw_priv
*priv
, u8
*addr
,
371 u32 ale_entry
[ALE_ENTRY_WORDS
] = {0, 0, 0};
374 cpsw_ale_set_entry_type(ale_entry
, ALE_TYPE_ADDR
);
375 cpsw_ale_set_addr(ale_entry
, addr
);
376 cpsw_ale_set_ucast_type(ale_entry
, ALE_UCAST_PERSISTANT
);
377 cpsw_ale_set_secure(ale_entry
, (flags
& ALE_SECURE
) ? 1 : 0);
378 cpsw_ale_set_blocked(ale_entry
, (flags
& ALE_BLOCKED
) ? 1 : 0);
379 cpsw_ale_set_port_num(ale_entry
, port
);
381 idx
= cpsw_ale_match_addr(priv
, addr
);
383 idx
= cpsw_ale_match_free(priv
);
385 idx
= cpsw_ale_find_ageable(priv
);
389 cpsw_ale_write(priv
, idx
, ale_entry
);
393 static int cpsw_ale_add_mcast(struct cpsw_priv
*priv
, u8
*addr
, int port_mask
)
395 u32 ale_entry
[ALE_ENTRY_WORDS
] = {0, 0, 0};
398 idx
= cpsw_ale_match_addr(priv
, addr
);
400 cpsw_ale_read(priv
, idx
, ale_entry
);
402 cpsw_ale_set_entry_type(ale_entry
, ALE_TYPE_ADDR
);
403 cpsw_ale_set_addr(ale_entry
, addr
);
404 cpsw_ale_set_mcast_state(ale_entry
, ALE_MCAST_FWD_2
);
406 mask
= cpsw_ale_get_port_mask(ale_entry
);
408 cpsw_ale_set_port_mask(ale_entry
, port_mask
);
411 idx
= cpsw_ale_match_free(priv
);
413 idx
= cpsw_ale_find_ageable(priv
);
417 cpsw_ale_write(priv
, idx
, ale_entry
);
421 static inline void cpsw_ale_control(struct cpsw_priv
*priv
, int bit
, int val
)
423 u32 tmp
, mask
= BIT(bit
);
425 tmp
= __raw_readl(priv
->ale_regs
+ ALE_CONTROL
);
427 tmp
|= val
? mask
: 0;
428 __raw_writel(tmp
, priv
->ale_regs
+ ALE_CONTROL
);
431 #define cpsw_ale_enable(priv, val) cpsw_ale_control(priv, 31, val)
432 #define cpsw_ale_clear(priv, val) cpsw_ale_control(priv, 30, val)
433 #define cpsw_ale_vlan_aware(priv, val) cpsw_ale_control(priv, 2, val)
435 static inline void cpsw_ale_port_state(struct cpsw_priv
*priv
, int port
,
438 int offset
= ALE_PORTCTL
+ 4 * port
;
441 tmp
= __raw_readl(priv
->ale_regs
+ offset
);
444 __raw_writel(tmp
, priv
->ale_regs
+ offset
);
447 static struct cpsw_mdio_regs
*mdio_regs
;
449 /* wait until hardware is ready for another user access */
450 static inline u32
wait_for_user_access(void)
453 int timeout
= MDIO_TIMEOUT
;
456 ((reg
= __raw_readl(&mdio_regs
->user
[0].access
)) & USERACCESS_GO
))
460 printf("wait_for_user_access Timeout\n");
466 /* wait until hardware state machine is idle */
467 static inline void wait_for_idle(void)
469 int timeout
= MDIO_TIMEOUT
;
472 ((__raw_readl(&mdio_regs
->control
) & CONTROL_IDLE
) == 0))
476 printf("wait_for_idle Timeout\n");
479 static int cpsw_mdio_read(struct mii_dev
*bus
, int phy_id
,
480 int dev_addr
, int phy_reg
)
485 if (phy_reg
& ~PHY_REG_MASK
|| phy_id
& ~PHY_ID_MASK
)
488 wait_for_user_access();
489 reg
= (USERACCESS_GO
| USERACCESS_READ
| (phy_reg
<< 21) |
491 __raw_writel(reg
, &mdio_regs
->user
[0].access
);
492 reg
= wait_for_user_access();
494 data
= (reg
& USERACCESS_ACK
) ? (reg
& USERACCESS_DATA
) : -1;
498 static int cpsw_mdio_write(struct mii_dev
*bus
, int phy_id
, int dev_addr
,
499 int phy_reg
, u16 data
)
503 if (phy_reg
& ~PHY_REG_MASK
|| phy_id
& ~PHY_ID_MASK
)
506 wait_for_user_access();
507 reg
= (USERACCESS_GO
| USERACCESS_WRITE
| (phy_reg
<< 21) |
508 (phy_id
<< 16) | (data
& USERACCESS_DATA
));
509 __raw_writel(reg
, &mdio_regs
->user
[0].access
);
510 wait_for_user_access();
515 static void cpsw_mdio_init(char *name
, u32 mdio_base
, u32 div
)
517 struct mii_dev
*bus
= mdio_alloc();
519 mdio_regs
= (struct cpsw_mdio_regs
*)mdio_base
;
521 /* set enable and clock divider */
522 __raw_writel(div
| CONTROL_ENABLE
, &mdio_regs
->control
);
525 * wait for scan logic to settle:
526 * the scan time consists of (a) a large fixed component, and (b) a
527 * small component that varies with the mii bus frequency. These
528 * were estimated using measurements at 1.1 and 2.2 MHz on tnetv107x
529 * silicon. Since the effect of (b) was found to be largely
530 * negligible, we keep things simple here.
534 bus
->read
= cpsw_mdio_read
;
535 bus
->write
= cpsw_mdio_write
;
536 sprintf(bus
->name
, name
);
541 /* Set a self-clearing bit in a register, and wait for it to clear */
542 static inline void setbit_and_wait_for_clear32(void *addr
)
544 __raw_writel(CLEAR_BIT
, addr
);
545 while (__raw_readl(addr
) & CLEAR_BIT
)
549 #define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
550 ((mac)[2] << 16) | ((mac)[3] << 24))
551 #define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
553 static void cpsw_set_slave_mac(struct cpsw_slave
*slave
,
554 struct cpsw_priv
*priv
)
556 __raw_writel(mac_hi(priv
->dev
->enetaddr
), &slave
->regs
->sa_hi
);
557 __raw_writel(mac_lo(priv
->dev
->enetaddr
), &slave
->regs
->sa_lo
);
560 static void cpsw_slave_update_link(struct cpsw_slave
*slave
,
561 struct cpsw_priv
*priv
, int *link
)
563 struct phy_device
*phy
= priv
->phydev
;
569 if (*link
) { /* link up */
570 mac_control
= priv
->data
.mac_control
;
571 if (phy
->speed
== 1000)
572 mac_control
|= GIGABITEN
;
573 if (phy
->duplex
== DUPLEX_FULL
)
574 mac_control
|= FULLDUPLEXEN
;
575 if (phy
->speed
== 100)
576 mac_control
|= MIIEN
;
579 if (mac_control
== slave
->mac_control
)
583 printf("link up on port %d, speed %d, %s duplex\n",
584 slave
->slave_num
, phy
->speed
,
585 (phy
->duplex
== DUPLEX_FULL
) ? "full" : "half");
587 printf("link down on port %d\n", slave
->slave_num
);
590 __raw_writel(mac_control
, &slave
->sliver
->mac_control
);
591 slave
->mac_control
= mac_control
;
594 static int cpsw_update_link(struct cpsw_priv
*priv
)
597 struct cpsw_slave
*slave
;
599 for_each_slave(slave
, priv
)
600 cpsw_slave_update_link(slave
, priv
, &link
);
605 static inline u32
cpsw_get_slave_port(struct cpsw_priv
*priv
, u32 slave_num
)
607 if (priv
->host_port
== 0)
608 return slave_num
+ 1;
613 static void cpsw_slave_init(struct cpsw_slave
*slave
, struct cpsw_priv
*priv
)
617 setbit_and_wait_for_clear32(&slave
->sliver
->soft_reset
);
619 /* setup priority mapping */
620 __raw_writel(0x76543210, &slave
->sliver
->rx_pri_map
);
621 __raw_writel(0x33221100, &slave
->regs
->tx_pri_map
);
623 /* setup max packet size, and mac address */
624 __raw_writel(PKT_MAX
, &slave
->sliver
->rx_maxlen
);
625 cpsw_set_slave_mac(slave
, priv
);
627 slave
->mac_control
= 0; /* no link yet */
629 /* enable forwarding */
630 slave_port
= cpsw_get_slave_port(priv
, slave
->slave_num
);
631 cpsw_ale_port_state(priv
, slave_port
, ALE_PORT_STATE_FORWARD
);
633 cpsw_ale_add_mcast(priv
, NetBcastAddr
, 1 << slave_port
);
636 static struct cpdma_desc
*cpdma_desc_alloc(struct cpsw_priv
*priv
)
638 struct cpdma_desc
*desc
= priv
->desc_free
;
641 priv
->desc_free
= desc_read_ptr(desc
, hw_next
);
645 static void cpdma_desc_free(struct cpsw_priv
*priv
, struct cpdma_desc
*desc
)
648 desc_write(desc
, hw_next
, priv
->desc_free
);
649 priv
->desc_free
= desc
;
653 static int cpdma_submit(struct cpsw_priv
*priv
, struct cpdma_chan
*chan
,
654 void *buffer
, int len
)
656 struct cpdma_desc
*desc
, *prev
;
659 desc
= cpdma_desc_alloc(priv
);
666 mode
= CPDMA_DESC_OWNER
| CPDMA_DESC_SOP
| CPDMA_DESC_EOP
;
668 desc_write(desc
, hw_next
, 0);
669 desc_write(desc
, hw_buffer
, buffer
);
670 desc_write(desc
, hw_len
, len
);
671 desc_write(desc
, hw_mode
, mode
| len
);
672 desc_write(desc
, sw_buffer
, buffer
);
673 desc_write(desc
, sw_len
, len
);
676 /* simple case - first packet enqueued */
679 chan_write(chan
, hdp
, desc
);
683 /* not the first packet - enqueue at the tail */
685 desc_write(prev
, hw_next
, desc
);
688 /* next check if EOQ has been triggered already */
689 if (desc_read(prev
, hw_mode
) & CPDMA_DESC_EOQ
)
690 chan_write(chan
, hdp
, desc
);
694 chan_write(chan
, rxfree
, 1);
698 static int cpdma_process(struct cpsw_priv
*priv
, struct cpdma_chan
*chan
,
699 void **buffer
, int *len
)
701 struct cpdma_desc
*desc
= chan
->head
;
707 status
= desc_read(desc
, hw_mode
);
710 *len
= status
& 0x7ff;
713 *buffer
= desc_read_ptr(desc
, sw_buffer
);
715 if (status
& CPDMA_DESC_OWNER
) {
716 if (chan_read(chan
, hdp
) == 0) {
717 if (desc_read(desc
, hw_mode
) & CPDMA_DESC_OWNER
)
718 chan_write(chan
, hdp
, desc
);
724 chan
->head
= desc_read_ptr(desc
, hw_next
);
725 chan_write(chan
, cp
, desc
);
727 cpdma_desc_free(priv
, desc
);
731 static int cpsw_init(struct eth_device
*dev
, bd_t
*bis
)
733 struct cpsw_priv
*priv
= dev
->priv
;
734 struct cpsw_slave
*slave
;
737 /* soft reset the controller and initialize priv */
738 setbit_and_wait_for_clear32(&priv
->regs
->soft_reset
);
740 /* initialize and reset the address lookup engine */
741 cpsw_ale_enable(priv
, 1);
742 cpsw_ale_clear(priv
, 1);
743 cpsw_ale_vlan_aware(priv
, 0); /* vlan unaware mode */
745 /* setup host port priority mapping */
746 __raw_writel(0x76543210, &priv
->host_port_regs
->cpdma_tx_pri_map
);
747 __raw_writel(0, &priv
->host_port_regs
->cpdma_rx_chan_map
);
749 /* disable priority elevation and enable statistics on all ports */
750 __raw_writel(0, &priv
->regs
->ptype
);
752 /* enable statistics collection only on the host port */
753 __raw_writel(BIT(priv
->host_port
), &priv
->regs
->stat_port_en
);
755 cpsw_ale_port_state(priv
, priv
->host_port
, ALE_PORT_STATE_FORWARD
);
757 cpsw_ale_add_ucast(priv
, priv
->dev
->enetaddr
, priv
->host_port
,
759 cpsw_ale_add_mcast(priv
, NetBcastAddr
, 1 << priv
->host_port
);
761 for_each_slave(slave
, priv
)
762 cpsw_slave_init(slave
, priv
);
764 cpsw_update_link(priv
);
766 /* init descriptor pool */
767 for (i
= 0; i
< NUM_DESCS
; i
++) {
768 desc_write(&priv
->descs
[i
], hw_next
,
769 (i
== (NUM_DESCS
- 1)) ? 0 : &priv
->descs
[i
+1]);
771 priv
->desc_free
= &priv
->descs
[0];
773 /* initialize channels */
774 if (priv
->data
.version
== CPSW_CTRL_VERSION_2
) {
775 memset(&priv
->rx_chan
, 0, sizeof(struct cpdma_chan
));
776 priv
->rx_chan
.hdp
= priv
->dma_regs
+ CPDMA_RXHDP_VER2
;
777 priv
->rx_chan
.cp
= priv
->dma_regs
+ CPDMA_RXCP_VER2
;
778 priv
->rx_chan
.rxfree
= priv
->dma_regs
+ CPDMA_RXFREE
;
780 memset(&priv
->tx_chan
, 0, sizeof(struct cpdma_chan
));
781 priv
->tx_chan
.hdp
= priv
->dma_regs
+ CPDMA_TXHDP_VER2
;
782 priv
->tx_chan
.cp
= priv
->dma_regs
+ CPDMA_TXCP_VER2
;
784 memset(&priv
->rx_chan
, 0, sizeof(struct cpdma_chan
));
785 priv
->rx_chan
.hdp
= priv
->dma_regs
+ CPDMA_RXHDP_VER1
;
786 priv
->rx_chan
.cp
= priv
->dma_regs
+ CPDMA_RXCP_VER1
;
787 priv
->rx_chan
.rxfree
= priv
->dma_regs
+ CPDMA_RXFREE
;
789 memset(&priv
->tx_chan
, 0, sizeof(struct cpdma_chan
));
790 priv
->tx_chan
.hdp
= priv
->dma_regs
+ CPDMA_TXHDP_VER1
;
791 priv
->tx_chan
.cp
= priv
->dma_regs
+ CPDMA_TXCP_VER1
;
794 /* clear dma state */
795 setbit_and_wait_for_clear32(priv
->dma_regs
+ CPDMA_SOFTRESET
);
797 if (priv
->data
.version
== CPSW_CTRL_VERSION_2
) {
798 for (i
= 0; i
< priv
->data
.channels
; i
++) {
799 __raw_writel(0, priv
->dma_regs
+ CPDMA_RXHDP_VER2
+ 4
801 __raw_writel(0, priv
->dma_regs
+ CPDMA_RXFREE
+ 4
803 __raw_writel(0, priv
->dma_regs
+ CPDMA_RXCP_VER2
+ 4
805 __raw_writel(0, priv
->dma_regs
+ CPDMA_TXHDP_VER2
+ 4
807 __raw_writel(0, priv
->dma_regs
+ CPDMA_TXCP_VER2
+ 4
811 for (i
= 0; i
< priv
->data
.channels
; i
++) {
812 __raw_writel(0, priv
->dma_regs
+ CPDMA_RXHDP_VER1
+ 4
814 __raw_writel(0, priv
->dma_regs
+ CPDMA_RXFREE
+ 4
816 __raw_writel(0, priv
->dma_regs
+ CPDMA_RXCP_VER1
+ 4
818 __raw_writel(0, priv
->dma_regs
+ CPDMA_TXHDP_VER1
+ 4
820 __raw_writel(0, priv
->dma_regs
+ CPDMA_TXCP_VER1
+ 4
826 __raw_writel(1, priv
->dma_regs
+ CPDMA_TXCONTROL
);
827 __raw_writel(1, priv
->dma_regs
+ CPDMA_RXCONTROL
);
829 /* submit rx descs */
830 for (i
= 0; i
< PKTBUFSRX
; i
++) {
831 ret
= cpdma_submit(priv
, &priv
->rx_chan
, NetRxPackets
[i
],
834 printf("error %d submitting rx desc\n", ret
);
842 static void cpsw_halt(struct eth_device
*dev
)
844 struct cpsw_priv
*priv
= dev
->priv
;
846 writel(0, priv
->dma_regs
+ CPDMA_TXCONTROL
);
847 writel(0, priv
->dma_regs
+ CPDMA_RXCONTROL
);
849 /* soft reset the controller and initialize priv */
850 setbit_and_wait_for_clear32(&priv
->regs
->soft_reset
);
852 /* clear dma state */
853 setbit_and_wait_for_clear32(priv
->dma_regs
+ CPDMA_SOFTRESET
);
855 priv
->data
.control(0);
858 static int cpsw_send(struct eth_device
*dev
, void *packet
, int length
)
860 struct cpsw_priv
*priv
= dev
->priv
;
863 int timeout
= CPDMA_TIMEOUT
;
865 if (!cpsw_update_link(priv
))
868 flush_dcache_range((unsigned long)packet
,
869 (unsigned long)packet
+ length
);
871 /* first reap completed packets */
873 (cpdma_process(priv
, &priv
->tx_chan
, &buffer
, &len
) >= 0))
877 printf("cpdma_process timeout\n");
881 return cpdma_submit(priv
, &priv
->tx_chan
, packet
, length
);
884 static int cpsw_recv(struct eth_device
*dev
)
886 struct cpsw_priv
*priv
= dev
->priv
;
890 cpsw_update_link(priv
);
892 while (cpdma_process(priv
, &priv
->rx_chan
, &buffer
, &len
) >= 0) {
893 invalidate_dcache_range((unsigned long)buffer
,
894 (unsigned long)buffer
+ PKTSIZE_ALIGN
);
895 NetReceive(buffer
, len
);
896 cpdma_submit(priv
, &priv
->rx_chan
, buffer
, PKTSIZE
);
902 static void cpsw_slave_setup(struct cpsw_slave
*slave
, int slave_num
,
903 struct cpsw_priv
*priv
)
905 void *regs
= priv
->regs
;
906 struct cpsw_slave_data
*data
= priv
->data
.slave_data
+ slave_num
;
907 slave
->slave_num
= slave_num
;
909 slave
->regs
= regs
+ data
->slave_reg_ofs
;
910 slave
->sliver
= regs
+ data
->sliver_reg_ofs
;
913 static int cpsw_phy_init(struct eth_device
*dev
, struct cpsw_slave
*slave
)
915 struct cpsw_priv
*priv
= (struct cpsw_priv
*)dev
->priv
;
916 struct phy_device
*phydev
;
917 u32 supported
= (SUPPORTED_10baseT_Half
|
918 SUPPORTED_10baseT_Full
|
919 SUPPORTED_100baseT_Half
|
920 SUPPORTED_100baseT_Full
|
921 SUPPORTED_1000baseT_Full
);
923 phydev
= phy_connect(priv
->bus
,
926 slave
->data
->phy_if
);
928 phydev
->supported
&= supported
;
929 phydev
->advertising
= phydev
->supported
;
931 priv
->phydev
= phydev
;
937 int cpsw_register(struct cpsw_platform_data
*data
)
939 struct cpsw_priv
*priv
;
940 struct cpsw_slave
*slave
;
941 void *regs
= (void *)data
->cpsw_base
;
942 struct eth_device
*dev
;
944 dev
= calloc(sizeof(*dev
), 1);
948 priv
= calloc(sizeof(*priv
), 1);
957 priv
->slaves
= malloc(sizeof(struct cpsw_slave
) * data
->slaves
);
964 priv
->descs
= (void *)CPDMA_RAM_ADDR
;
965 priv
->host_port
= data
->host_port_num
;
967 priv
->host_port_regs
= regs
+ data
->host_port_reg_ofs
;
968 priv
->dma_regs
= regs
+ data
->cpdma_reg_ofs
;
969 priv
->ale_regs
= regs
+ data
->ale_reg_ofs
;
973 for_each_slave(slave
, priv
) {
974 cpsw_slave_setup(slave
, idx
, priv
);
978 strcpy(dev
->name
, "cpsw");
980 dev
->init
= cpsw_init
;
981 dev
->halt
= cpsw_halt
;
982 dev
->send
= cpsw_send
;
983 dev
->recv
= cpsw_recv
;
988 cpsw_mdio_init(dev
->name
, data
->mdio_base
, data
->mdio_div
);
989 priv
->bus
= miiphy_get_dev_by_name(dev
->name
);
990 for_each_slave(slave
, priv
)
991 cpsw_phy_init(dev
, slave
);