blob: 41443435ab1c374f5b5788905dc199efa5b07373 [file] [log] [blame]
Bryan Wue190d6b2007-07-17 14:43:44 +08001/*
Mike Frysinger2fb9d6f2008-01-30 16:52:24 +08002 * Blackfin On-Chip MAC Driver
Bryan Wue190d6b2007-07-17 14:43:44 +08003 *
Mike Frysinger2fb9d6f2008-01-30 16:52:24 +08004 * Copyright 2004-2007 Analog Devices Inc.
Bryan Wue190d6b2007-07-17 14:43:44 +08005 *
Mike Frysinger2fb9d6f2008-01-30 16:52:24 +08006 * Enter bugs at http://blackfin.uclinux.org/
Bryan Wue190d6b2007-07-17 14:43:44 +08007 *
Mike Frysinger2fb9d6f2008-01-30 16:52:24 +08008 * Licensed under the GPL-2 or later.
Bryan Wue190d6b2007-07-17 14:43:44 +08009 */
10
11#include <linux/init.h>
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/sched.h>
15#include <linux/slab.h>
16#include <linux/delay.h>
17#include <linux/timer.h>
18#include <linux/errno.h>
19#include <linux/irq.h>
20#include <linux/io.h>
21#include <linux/ioport.h>
22#include <linux/crc32.h>
23#include <linux/device.h>
24#include <linux/spinlock.h>
Bryan Wue190d6b2007-07-17 14:43:44 +080025#include <linux/mii.h>
Bryan Wu4ae5a3a2007-09-19 23:37:36 +080026#include <linux/phy.h>
Bryan Wue190d6b2007-07-17 14:43:44 +080027#include <linux/netdevice.h>
28#include <linux/etherdevice.h>
Bryan Wu679dce32008-04-25 11:53:11 +080029#include <linux/ethtool.h>
Bryan Wue190d6b2007-07-17 14:43:44 +080030#include <linux/skbuff.h>
Bryan Wue190d6b2007-07-17 14:43:44 +080031#include <linux/platform_device.h>
Bryan Wue190d6b2007-07-17 14:43:44 +080032
33#include <asm/dma.h>
34#include <linux/dma-mapping.h>
35
36#include <asm/blackfin.h>
37#include <asm/cacheflush.h>
38#include <asm/portmux.h>
39
40#include "bfin_mac.h"
41
42#define DRV_NAME "bfin_mac"
43#define DRV_VERSION "1.1"
44#define DRV_AUTHOR "Bryan Wu, Luke Yang"
Bryan Wu7ef0a7e2008-04-25 11:53:10 +080045#define DRV_DESC "Blackfin on-chip Ethernet MAC driver"
Bryan Wue190d6b2007-07-17 14:43:44 +080046
47MODULE_AUTHOR(DRV_AUTHOR);
48MODULE_LICENSE("GPL");
49MODULE_DESCRIPTION(DRV_DESC);
Kay Sievers72abb462008-04-18 13:50:44 -070050MODULE_ALIAS("platform:bfin_mac");
Bryan Wue190d6b2007-07-17 14:43:44 +080051
52#if defined(CONFIG_BFIN_MAC_USE_L1)
53# define bfin_mac_alloc(dma_handle, size) l1_data_sram_zalloc(size)
54# define bfin_mac_free(dma_handle, ptr) l1_data_sram_free(ptr)
55#else
56# define bfin_mac_alloc(dma_handle, size) \
57 dma_alloc_coherent(NULL, size, dma_handle, GFP_KERNEL)
58# define bfin_mac_free(dma_handle, ptr) \
59 dma_free_coherent(NULL, sizeof(*ptr), ptr, dma_handle)
60#endif
61
62#define PKT_BUF_SZ 1580
63
64#define MAX_TIMEOUT_CNT 500
65
66/* pointers to maintain transmit list */
67static struct net_dma_desc_tx *tx_list_head;
68static struct net_dma_desc_tx *tx_list_tail;
69static struct net_dma_desc_rx *rx_list_head;
70static struct net_dma_desc_rx *rx_list_tail;
71static struct net_dma_desc_rx *current_rx_ptr;
72static struct net_dma_desc_tx *current_tx_ptr;
73static struct net_dma_desc_tx *tx_desc;
74static struct net_dma_desc_rx *rx_desc;
75
Bryan Wu7ef0a7e2008-04-25 11:53:10 +080076#if defined(CONFIG_BFIN_MAC_RMII)
77static u16 pin_req[] = P_RMII0;
78#else
79static u16 pin_req[] = P_MII0;
80#endif
81
82static void bfin_mac_disable(void);
83static void bfin_mac_enable(void);
Bryan Wu4ae5a3a2007-09-19 23:37:36 +080084
Bryan Wue190d6b2007-07-17 14:43:44 +080085static void desc_list_free(void)
86{
87 struct net_dma_desc_rx *r;
88 struct net_dma_desc_tx *t;
89 int i;
90#if !defined(CONFIG_BFIN_MAC_USE_L1)
91 dma_addr_t dma_handle = 0;
92#endif
93
94 if (tx_desc) {
95 t = tx_list_head;
96 for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
97 if (t) {
98 if (t->skb) {
99 dev_kfree_skb(t->skb);
100 t->skb = NULL;
101 }
102 t = t->next;
103 }
104 }
105 bfin_mac_free(dma_handle, tx_desc);
106 }
107
108 if (rx_desc) {
109 r = rx_list_head;
110 for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
111 if (r) {
112 if (r->skb) {
113 dev_kfree_skb(r->skb);
114 r->skb = NULL;
115 }
116 r = r->next;
117 }
118 }
119 bfin_mac_free(dma_handle, rx_desc);
120 }
121}
122
123static int desc_list_init(void)
124{
125 int i;
126 struct sk_buff *new_skb;
127#if !defined(CONFIG_BFIN_MAC_USE_L1)
128 /*
129 * This dma_handle is useless in Blackfin dma_alloc_coherent().
130 * The real dma handler is the return value of dma_alloc_coherent().
131 */
132 dma_addr_t dma_handle;
133#endif
134
135 tx_desc = bfin_mac_alloc(&dma_handle,
136 sizeof(struct net_dma_desc_tx) *
137 CONFIG_BFIN_TX_DESC_NUM);
138 if (tx_desc == NULL)
139 goto init_error;
140
141 rx_desc = bfin_mac_alloc(&dma_handle,
142 sizeof(struct net_dma_desc_rx) *
143 CONFIG_BFIN_RX_DESC_NUM);
144 if (rx_desc == NULL)
145 goto init_error;
146
147 /* init tx_list */
148 tx_list_head = tx_list_tail = tx_desc;
149
150 for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
151 struct net_dma_desc_tx *t = tx_desc + i;
152 struct dma_descriptor *a = &(t->desc_a);
153 struct dma_descriptor *b = &(t->desc_b);
154
155 /*
156 * disable DMA
157 * read from memory WNR = 0
158 * wordsize is 32 bits
159 * 6 half words is desc size
160 * large desc flow
161 */
162 a->config = WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
163 a->start_addr = (unsigned long)t->packet;
164 a->x_count = 0;
165 a->next_dma_desc = b;
166
167 /*
168 * enabled DMA
169 * write to memory WNR = 1
170 * wordsize is 32 bits
171 * disable interrupt
172 * 6 half words is desc size
173 * large desc flow
174 */
175 b->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
176 b->start_addr = (unsigned long)(&(t->status));
177 b->x_count = 0;
178
179 t->skb = NULL;
180 tx_list_tail->desc_b.next_dma_desc = a;
181 tx_list_tail->next = t;
182 tx_list_tail = t;
183 }
184 tx_list_tail->next = tx_list_head; /* tx_list is a circle */
185 tx_list_tail->desc_b.next_dma_desc = &(tx_list_head->desc_a);
186 current_tx_ptr = tx_list_head;
187
188 /* init rx_list */
189 rx_list_head = rx_list_tail = rx_desc;
190
191 for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
192 struct net_dma_desc_rx *r = rx_desc + i;
193 struct dma_descriptor *a = &(r->desc_a);
194 struct dma_descriptor *b = &(r->desc_b);
195
196 /* allocate a new skb for next time receive */
197 new_skb = dev_alloc_skb(PKT_BUF_SZ + 2);
198 if (!new_skb) {
199 printk(KERN_NOTICE DRV_NAME
200 ": init: low on mem - packet dropped\n");
201 goto init_error;
202 }
203 skb_reserve(new_skb, 2);
204 r->skb = new_skb;
205
206 /*
207 * enabled DMA
208 * write to memory WNR = 1
209 * wordsize is 32 bits
210 * disable interrupt
211 * 6 half words is desc size
212 * large desc flow
213 */
214 a->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
215 /* since RXDWA is enabled */
216 a->start_addr = (unsigned long)new_skb->data - 2;
217 a->x_count = 0;
218 a->next_dma_desc = b;
219
220 /*
221 * enabled DMA
222 * write to memory WNR = 1
223 * wordsize is 32 bits
224 * enable interrupt
225 * 6 half words is desc size
226 * large desc flow
227 */
228 b->config = DMAEN | WNR | WDSIZE_32 | DI_EN |
229 NDSIZE_6 | DMAFLOW_LARGE;
230 b->start_addr = (unsigned long)(&(r->status));
231 b->x_count = 0;
232
233 rx_list_tail->desc_b.next_dma_desc = a;
234 rx_list_tail->next = r;
235 rx_list_tail = r;
236 }
237 rx_list_tail->next = rx_list_head; /* rx_list is a circle */
238 rx_list_tail->desc_b.next_dma_desc = &(rx_list_head->desc_a);
239 current_rx_ptr = rx_list_head;
240
241 return 0;
242
243init_error:
244 desc_list_free();
245 printk(KERN_ERR DRV_NAME ": kmalloc failed\n");
246 return -ENOMEM;
247}
248
249
250/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
251
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800252/*
253 * MII operations
254 */
Bryan Wue190d6b2007-07-17 14:43:44 +0800255/* Wait until the previous MDC/MDIO transaction has completed */
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800256static void mdio_poll(void)
Bryan Wue190d6b2007-07-17 14:43:44 +0800257{
258 int timeout_cnt = MAX_TIMEOUT_CNT;
259
260 /* poll the STABUSY bit */
261 while ((bfin_read_EMAC_STAADD()) & STABUSY) {
Bryan Wu6db9e462008-01-30 16:52:21 +0800262 udelay(1);
Bryan Wue190d6b2007-07-17 14:43:44 +0800263 if (timeout_cnt-- < 0) {
264 printk(KERN_ERR DRV_NAME
265 ": wait MDC/MDIO transaction to complete timeout\n");
266 break;
267 }
268 }
269}
270
271/* Read an off-chip register in a PHY through the MDC/MDIO port */
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800272static int mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
Bryan Wue190d6b2007-07-17 14:43:44 +0800273{
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800274 mdio_poll();
Bryan Wue190d6b2007-07-17 14:43:44 +0800275
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800276 /* read mode */
277 bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
278 SET_REGAD((u16) regnum) |
279 STABUSY);
280
281 mdio_poll();
282
283 return (int) bfin_read_EMAC_STADAT();
Bryan Wue190d6b2007-07-17 14:43:44 +0800284}
285
286/* Write an off-chip register in a PHY through the MDC/MDIO port */
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800287static int mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
288 u16 value)
Bryan Wue190d6b2007-07-17 14:43:44 +0800289{
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800290 mdio_poll();
291
292 bfin_write_EMAC_STADAT((u32) value);
Bryan Wue190d6b2007-07-17 14:43:44 +0800293
294 /* write mode */
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800295 bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
296 SET_REGAD((u16) regnum) |
Bryan Wue190d6b2007-07-17 14:43:44 +0800297 STAOP |
298 STABUSY);
299
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800300 mdio_poll();
301
302 return 0;
Bryan Wue190d6b2007-07-17 14:43:44 +0800303}
304
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800305static int mdiobus_reset(struct mii_bus *bus)
Bryan Wue190d6b2007-07-17 14:43:44 +0800306{
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800307 return 0;
Bryan Wue190d6b2007-07-17 14:43:44 +0800308}
309
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800310static void bfin_mac_adjust_link(struct net_device *dev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800311{
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800312 struct bfin_mac_local *lp = netdev_priv(dev);
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800313 struct phy_device *phydev = lp->phydev;
314 unsigned long flags;
315 int new_state = 0;
Bryan Wue190d6b2007-07-17 14:43:44 +0800316
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800317 spin_lock_irqsave(&lp->lock, flags);
318 if (phydev->link) {
319 /* Now we make sure that we can be in full duplex mode.
320 * If not, we operate in half-duplex mode. */
321 if (phydev->duplex != lp->old_duplex) {
322 u32 opmode = bfin_read_EMAC_OPMODE();
323 new_state = 1;
Bryan Wue190d6b2007-07-17 14:43:44 +0800324
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800325 if (phydev->duplex)
326 opmode |= FDMODE;
327 else
328 opmode &= ~(FDMODE);
Bryan Wue190d6b2007-07-17 14:43:44 +0800329
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800330 bfin_write_EMAC_OPMODE(opmode);
331 lp->old_duplex = phydev->duplex;
332 }
Bryan Wue190d6b2007-07-17 14:43:44 +0800333
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800334 if (phydev->speed != lp->old_speed) {
335#if defined(CONFIG_BFIN_MAC_RMII)
336 u32 opmode = bfin_read_EMAC_OPMODE();
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800337 switch (phydev->speed) {
338 case 10:
339 opmode |= RMII_10;
340 break;
341 case 100:
342 opmode &= ~(RMII_10);
343 break;
344 default:
345 printk(KERN_WARNING
346 "%s: Ack! Speed (%d) is not 10/100!\n",
347 DRV_NAME, phydev->speed);
348 break;
349 }
350 bfin_write_EMAC_OPMODE(opmode);
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800351#endif
Bryan Wue190d6b2007-07-17 14:43:44 +0800352
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800353 new_state = 1;
354 lp->old_speed = phydev->speed;
355 }
Bryan Wue190d6b2007-07-17 14:43:44 +0800356
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800357 if (!lp->old_link) {
358 new_state = 1;
359 lp->old_link = 1;
360 netif_schedule(dev);
361 }
362 } else if (lp->old_link) {
363 new_state = 1;
364 lp->old_link = 0;
365 lp->old_speed = 0;
366 lp->old_duplex = -1;
Bryan Wue190d6b2007-07-17 14:43:44 +0800367 }
368
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800369 if (new_state) {
370 u32 opmode = bfin_read_EMAC_OPMODE();
371 phy_print_status(phydev);
372 pr_debug("EMAC_OPMODE = 0x%08x\n", opmode);
Bryan Wue190d6b2007-07-17 14:43:44 +0800373 }
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800374
375 spin_unlock_irqrestore(&lp->lock, flags);
376}
377
Bryan Wu7cc8f382008-01-30 16:52:22 +0800378/* MDC = 2.5 MHz */
379#define MDC_CLK 2500000
380
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800381static int mii_probe(struct net_device *dev)
382{
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800383 struct bfin_mac_local *lp = netdev_priv(dev);
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800384 struct phy_device *phydev = NULL;
385 unsigned short sysctl;
386 int i;
Bryan Wu7cc8f382008-01-30 16:52:22 +0800387 u32 sclk, mdc_div;
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800388
389 /* Enable PHY output early */
390 if (!(bfin_read_VR_CTL() & PHYCLKOE))
391 bfin_write_VR_CTL(bfin_read_VR_CTL() | PHYCLKOE);
392
Bryan Wu7cc8f382008-01-30 16:52:22 +0800393 sclk = get_sclk();
394 mdc_div = ((sclk / MDC_CLK) / 2) - 1;
395
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800396 sysctl = bfin_read_EMAC_SYSCTL();
Bryan Wu9dc7f302008-01-30 16:52:28 +0800397 sysctl = (sysctl & ~MDCDIV) | SET_MDCDIV(mdc_div);
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800398 bfin_write_EMAC_SYSCTL(sysctl);
399
400 /* search for connect PHY device */
401 for (i = 0; i < PHY_MAX_ADDR; i++) {
402 struct phy_device *const tmp_phydev = lp->mii_bus.phy_map[i];
403
404 if (!tmp_phydev)
405 continue; /* no PHY here... */
406
407 phydev = tmp_phydev;
408 break; /* found it */
409 }
410
411 /* now we are supposed to have a proper phydev, to attach to... */
412 if (!phydev) {
413 printk(KERN_INFO "%s: Don't found any phy device at all\n",
414 dev->name);
415 return -ENODEV;
416 }
417
418#if defined(CONFIG_BFIN_MAC_RMII)
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800419 phydev = phy_connect(dev, phydev->dev.bus_id, &bfin_mac_adjust_link, 0,
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800420 PHY_INTERFACE_MODE_RMII);
421#else
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800422 phydev = phy_connect(dev, phydev->dev.bus_id, &bfin_mac_adjust_link, 0,
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800423 PHY_INTERFACE_MODE_MII);
424#endif
425
426 if (IS_ERR(phydev)) {
427 printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
428 return PTR_ERR(phydev);
429 }
430
431 /* mask with MAC supported features */
432 phydev->supported &= (SUPPORTED_10baseT_Half
433 | SUPPORTED_10baseT_Full
434 | SUPPORTED_100baseT_Half
435 | SUPPORTED_100baseT_Full
436 | SUPPORTED_Autoneg
437 | SUPPORTED_Pause | SUPPORTED_Asym_Pause
438 | SUPPORTED_MII
439 | SUPPORTED_TP);
440
441 phydev->advertising = phydev->supported;
442
443 lp->old_link = 0;
444 lp->old_speed = 0;
445 lp->old_duplex = -1;
446 lp->phydev = phydev;
447
448 printk(KERN_INFO "%s: attached PHY driver [%s] "
Bryan Wu7cc8f382008-01-30 16:52:22 +0800449 "(mii_bus:phy_addr=%s, irq=%d, mdc_clk=%dHz(mdc_div=%d)"
450 "@sclk=%dMHz)\n",
451 DRV_NAME, phydev->drv->name, phydev->dev.bus_id, phydev->irq,
452 MDC_CLK, mdc_div, sclk/1000000);
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800453
454 return 0;
Bryan Wue190d6b2007-07-17 14:43:44 +0800455}
456
Bryan Wu679dce32008-04-25 11:53:11 +0800457/*
458 * Ethtool support
459 */
460
461static int
462bfin_mac_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
463{
464 struct bfin_mac_local *lp = netdev_priv(dev);
465
466 if (lp->phydev)
467 return phy_ethtool_gset(lp->phydev, cmd);
468
469 return -EINVAL;
470}
471
472static int
473bfin_mac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
474{
475 struct bfin_mac_local *lp = netdev_priv(dev);
476
477 if (!capable(CAP_NET_ADMIN))
478 return -EPERM;
479
480 if (lp->phydev)
481 return phy_ethtool_sset(lp->phydev, cmd);
482
483 return -EINVAL;
484}
485
486static void bfin_mac_ethtool_getdrvinfo(struct net_device *dev,
487 struct ethtool_drvinfo *info)
488{
489 strcpy(info->driver, DRV_NAME);
490 strcpy(info->version, DRV_VERSION);
491 strcpy(info->fw_version, "N/A");
492 strcpy(info->bus_info, dev->dev.bus_id);
493}
494
495static struct ethtool_ops bfin_mac_ethtool_ops = {
496 .get_settings = bfin_mac_ethtool_getsettings,
497 .set_settings = bfin_mac_ethtool_setsettings,
498 .get_link = ethtool_op_get_link,
499 .get_drvinfo = bfin_mac_ethtool_getdrvinfo,
500};
501
Bryan Wue190d6b2007-07-17 14:43:44 +0800502/**************************************************************************/
503void setup_system_regs(struct net_device *dev)
504{
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800505 unsigned short sysctl;
Bryan Wue190d6b2007-07-17 14:43:44 +0800506
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800507 /*
508 * Odd word alignment for Receive Frame DMA word
509 * Configure checksum support and rcve frame word alignment
510 */
511 sysctl = bfin_read_EMAC_SYSCTL();
Bryan Wue190d6b2007-07-17 14:43:44 +0800512#if defined(BFIN_MAC_CSUM_OFFLOAD)
513 sysctl |= RXDWA | RXCKS;
514#else
515 sysctl |= RXDWA;
516#endif
517 bfin_write_EMAC_SYSCTL(sysctl);
Bryan Wue190d6b2007-07-17 14:43:44 +0800518
519 bfin_write_EMAC_MMC_CTL(RSTC | CROLL);
520
521 /* Initialize the TX DMA channel registers */
522 bfin_write_DMA2_X_COUNT(0);
523 bfin_write_DMA2_X_MODIFY(4);
524 bfin_write_DMA2_Y_COUNT(0);
525 bfin_write_DMA2_Y_MODIFY(0);
526
527 /* Initialize the RX DMA channel registers */
528 bfin_write_DMA1_X_COUNT(0);
529 bfin_write_DMA1_X_MODIFY(4);
530 bfin_write_DMA1_Y_COUNT(0);
531 bfin_write_DMA1_Y_MODIFY(0);
532}
533
Alex Landau73f83182007-09-19 23:14:18 +0800534static void setup_mac_addr(u8 *mac_addr)
Bryan Wue190d6b2007-07-17 14:43:44 +0800535{
536 u32 addr_low = le32_to_cpu(*(__le32 *) & mac_addr[0]);
537 u16 addr_hi = le16_to_cpu(*(__le16 *) & mac_addr[4]);
538
539 /* this depends on a little-endian machine */
540 bfin_write_EMAC_ADDRLO(addr_low);
541 bfin_write_EMAC_ADDRHI(addr_hi);
542}
543
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800544static int bfin_mac_set_mac_address(struct net_device *dev, void *p)
Alex Landau73f83182007-09-19 23:14:18 +0800545{
546 struct sockaddr *addr = p;
547 if (netif_running(dev))
548 return -EBUSY;
549 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
550 setup_mac_addr(dev->dev_addr);
551 return 0;
552}
553
Bryan Wue190d6b2007-07-17 14:43:44 +0800554static void adjust_tx_list(void)
555{
556 int timeout_cnt = MAX_TIMEOUT_CNT;
557
558 if (tx_list_head->status.status_word != 0
559 && current_tx_ptr != tx_list_head) {
560 goto adjust_head; /* released something, just return; */
561 }
562
563 /*
564 * if nothing released, check wait condition
565 * current's next can not be the head,
566 * otherwise the dma will not stop as we want
567 */
568 if (current_tx_ptr->next->next == tx_list_head) {
569 while (tx_list_head->status.status_word == 0) {
Bryan Wu6db9e462008-01-30 16:52:21 +0800570 mdelay(1);
Bryan Wue190d6b2007-07-17 14:43:44 +0800571 if (tx_list_head->status.status_word != 0
572 || !(bfin_read_DMA2_IRQ_STATUS() & 0x08)) {
573 goto adjust_head;
574 }
575 if (timeout_cnt-- < 0) {
576 printk(KERN_ERR DRV_NAME
577 ": wait for adjust tx list head timeout\n");
578 break;
579 }
580 }
581 if (tx_list_head->status.status_word != 0) {
582 goto adjust_head;
583 }
584 }
585
586 return;
587
588adjust_head:
589 do {
590 tx_list_head->desc_a.config &= ~DMAEN;
591 tx_list_head->status.status_word = 0;
592 if (tx_list_head->skb) {
593 dev_kfree_skb(tx_list_head->skb);
594 tx_list_head->skb = NULL;
595 } else {
596 printk(KERN_ERR DRV_NAME
597 ": no sk_buff in a transmitted frame!\n");
598 }
599 tx_list_head = tx_list_head->next;
600 } while (tx_list_head->status.status_word != 0
601 && current_tx_ptr != tx_list_head);
602 return;
603
604}
605
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800606static int bfin_mac_hard_start_xmit(struct sk_buff *skb,
Bryan Wue190d6b2007-07-17 14:43:44 +0800607 struct net_device *dev)
608{
Bryan Wue190d6b2007-07-17 14:43:44 +0800609 unsigned int data;
610
611 current_tx_ptr->skb = skb;
612
613 /*
614 * Is skb->data always 16-bit aligned?
615 * Do we need to memcpy((char *)(tail->packet + 2), skb->data, len)?
616 */
617 if ((((unsigned int)(skb->data)) & 0x02) == 2) {
618 /* move skb->data to current_tx_ptr payload */
619 data = (unsigned int)(skb->data) - 2;
620 *((unsigned short *)data) = (unsigned short)(skb->len);
621 current_tx_ptr->desc_a.start_addr = (unsigned long)data;
622 /* this is important! */
623 blackfin_dcache_flush_range(data, (data + (skb->len)) + 2);
624
625 } else {
626 *((unsigned short *)(current_tx_ptr->packet)) =
627 (unsigned short)(skb->len);
628 memcpy((char *)(current_tx_ptr->packet + 2), skb->data,
629 (skb->len));
630 current_tx_ptr->desc_a.start_addr =
631 (unsigned long)current_tx_ptr->packet;
632 if (current_tx_ptr->status.status_word != 0)
633 current_tx_ptr->status.status_word = 0;
634 blackfin_dcache_flush_range((unsigned int)current_tx_ptr->
635 packet,
636 (unsigned int)(current_tx_ptr->
637 packet + skb->len) +
638 2);
639 }
640
641 /* enable this packet's dma */
642 current_tx_ptr->desc_a.config |= DMAEN;
643
644 /* tx dma is running, just return */
645 if (bfin_read_DMA2_IRQ_STATUS() & 0x08)
646 goto out;
647
648 /* tx dma is not running */
649 bfin_write_DMA2_NEXT_DESC_PTR(&(current_tx_ptr->desc_a));
650 /* dma enabled, read from memory, size is 6 */
651 bfin_write_DMA2_CONFIG(current_tx_ptr->desc_a.config);
652 /* Turn on the EMAC tx */
653 bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
654
655out:
656 adjust_tx_list();
657 current_tx_ptr = current_tx_ptr->next;
658 dev->trans_start = jiffies;
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700659 dev->stats.tx_packets++;
660 dev->stats.tx_bytes += (skb->len);
Bryan Wue190d6b2007-07-17 14:43:44 +0800661 return 0;
662}
663
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800664static void bfin_mac_rx(struct net_device *dev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800665{
666 struct sk_buff *skb, *new_skb;
Bryan Wue190d6b2007-07-17 14:43:44 +0800667 unsigned short len;
668
669 /* allocate a new skb for next time receive */
670 skb = current_rx_ptr->skb;
671 new_skb = dev_alloc_skb(PKT_BUF_SZ + 2);
672 if (!new_skb) {
673 printk(KERN_NOTICE DRV_NAME
674 ": rx: low on mem - packet dropped\n");
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700675 dev->stats.rx_dropped++;
Bryan Wue190d6b2007-07-17 14:43:44 +0800676 goto out;
677 }
678 /* reserve 2 bytes for RXDWA padding */
679 skb_reserve(new_skb, 2);
680 current_rx_ptr->skb = new_skb;
681 current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2;
682
Alexey Demin6e01d1a2008-01-30 16:52:27 +0800683 /* Invidate the data cache of skb->data range when it is write back
684 * cache. It will prevent overwritting the new data from DMA
685 */
686 blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
687 (unsigned long)new_skb->end);
688
Bryan Wue190d6b2007-07-17 14:43:44 +0800689 len = (unsigned short)((current_rx_ptr->status.status_word) & RX_FRLEN);
690 skb_put(skb, len);
691 blackfin_dcache_invalidate_range((unsigned long)skb->head,
692 (unsigned long)skb->tail);
693
694 dev->last_rx = jiffies;
695 skb->dev = dev;
696 skb->protocol = eth_type_trans(skb, dev);
697#if defined(BFIN_MAC_CSUM_OFFLOAD)
698 skb->csum = current_rx_ptr->status.ip_payload_csum;
Vitja Makarov00ff49a2007-11-23 17:55:51 +0800699 skb->ip_summed = CHECKSUM_COMPLETE;
Bryan Wue190d6b2007-07-17 14:43:44 +0800700#endif
701
702 netif_rx(skb);
Jeff Garzik09f75cd2007-10-03 17:41:50 -0700703 dev->stats.rx_packets++;
704 dev->stats.rx_bytes += len;
Bryan Wue190d6b2007-07-17 14:43:44 +0800705 current_rx_ptr->status.status_word = 0x00000000;
706 current_rx_ptr = current_rx_ptr->next;
707
708out:
709 return;
710}
711
712/* interrupt routine to handle rx and error signal */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800713static irqreturn_t bfin_mac_interrupt(int irq, void *dev_id)
Bryan Wue190d6b2007-07-17 14:43:44 +0800714{
715 struct net_device *dev = dev_id;
716 int number = 0;
717
718get_one_packet:
719 if (current_rx_ptr->status.status_word == 0) {
720 /* no more new packet received */
721 if (number == 0) {
722 if (current_rx_ptr->next->status.status_word != 0) {
723 current_rx_ptr = current_rx_ptr->next;
724 goto real_rx;
725 }
726 }
727 bfin_write_DMA1_IRQ_STATUS(bfin_read_DMA1_IRQ_STATUS() |
728 DMA_DONE | DMA_ERR);
729 return IRQ_HANDLED;
730 }
731
732real_rx:
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800733 bfin_mac_rx(dev);
Bryan Wue190d6b2007-07-17 14:43:44 +0800734 number++;
735 goto get_one_packet;
736}
737
738#ifdef CONFIG_NET_POLL_CONTROLLER
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800739static void bfin_mac_poll(struct net_device *dev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800740{
741 disable_irq(IRQ_MAC_RX);
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800742 bfin_mac_interrupt(IRQ_MAC_RX, dev);
Bryan Wue190d6b2007-07-17 14:43:44 +0800743 enable_irq(IRQ_MAC_RX);
744}
745#endif /* CONFIG_NET_POLL_CONTROLLER */
746
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800747static void bfin_mac_disable(void)
Bryan Wue190d6b2007-07-17 14:43:44 +0800748{
749 unsigned int opmode;
750
751 opmode = bfin_read_EMAC_OPMODE();
752 opmode &= (~RE);
753 opmode &= (~TE);
754 /* Turn off the EMAC */
755 bfin_write_EMAC_OPMODE(opmode);
756}
757
758/*
759 * Enable Interrupts, Receive, and Transmit
760 */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800761static void bfin_mac_enable(void)
Bryan Wue190d6b2007-07-17 14:43:44 +0800762{
763 u32 opmode;
764
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800765 pr_debug("%s: %s\n", DRV_NAME, __FUNCTION__);
Bryan Wue190d6b2007-07-17 14:43:44 +0800766
767 /* Set RX DMA */
768 bfin_write_DMA1_NEXT_DESC_PTR(&(rx_list_head->desc_a));
769 bfin_write_DMA1_CONFIG(rx_list_head->desc_a.config);
770
771 /* Wait MII done */
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800772 mdio_poll();
Bryan Wue190d6b2007-07-17 14:43:44 +0800773
774 /* We enable only RX here */
775 /* ASTP : Enable Automatic Pad Stripping
776 PR : Promiscuous Mode for test
777 PSF : Receive frames with total length less than 64 bytes.
778 FDMODE : Full Duplex Mode
779 LB : Internal Loopback for test
780 RE : Receiver Enable */
781 opmode = bfin_read_EMAC_OPMODE();
782 if (opmode & FDMODE)
783 opmode |= PSF;
784 else
785 opmode |= DRO | DC | PSF;
786 opmode |= RE;
787
788#if defined(CONFIG_BFIN_MAC_RMII)
789 opmode |= RMII; /* For Now only 100MBit are supported */
Michael Hennerich6893ff12008-01-30 16:52:25 +0800790#if (defined(CONFIG_BF537) || defined(CONFIG_BF536)) && CONFIG_BF_REV_0_2
Bryan Wue190d6b2007-07-17 14:43:44 +0800791 opmode |= TE;
792#endif
793#endif
794 /* Turn on the EMAC rx */
795 bfin_write_EMAC_OPMODE(opmode);
Bryan Wue190d6b2007-07-17 14:43:44 +0800796}
797
798/* Our watchdog timed out. Called by the networking layer */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800799static void bfin_mac_timeout(struct net_device *dev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800800{
801 pr_debug("%s: %s\n", dev->name, __FUNCTION__);
802
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800803 bfin_mac_disable();
Bryan Wue190d6b2007-07-17 14:43:44 +0800804
805 /* reset tx queue */
806 tx_list_tail = tx_list_head->next;
807
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800808 bfin_mac_enable();
Bryan Wue190d6b2007-07-17 14:43:44 +0800809
810 /* We can accept TX packets again */
811 dev->trans_start = jiffies;
812 netif_wake_queue(dev);
813}
814
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800815static void bfin_mac_multicast_hash(struct net_device *dev)
Aidan Williams775919b2008-01-30 16:52:23 +0800816{
817 u32 emac_hashhi, emac_hashlo;
818 struct dev_mc_list *dmi = dev->mc_list;
819 char *addrs;
820 int i;
821 u32 crc;
822
823 emac_hashhi = emac_hashlo = 0;
824
825 for (i = 0; i < dev->mc_count; i++) {
826 addrs = dmi->dmi_addr;
827 dmi = dmi->next;
828
829 /* skip non-multicast addresses */
830 if (!(*addrs & 1))
831 continue;
832
833 crc = ether_crc(ETH_ALEN, addrs);
834 crc >>= 26;
835
836 if (crc & 0x20)
837 emac_hashhi |= 1 << (crc & 0x1f);
838 else
839 emac_hashlo |= 1 << (crc & 0x1f);
840 }
841
842 bfin_write_EMAC_HASHHI(emac_hashhi);
843 bfin_write_EMAC_HASHLO(emac_hashlo);
844
845 return;
846}
847
Bryan Wue190d6b2007-07-17 14:43:44 +0800848/*
Bryan Wue190d6b2007-07-17 14:43:44 +0800849 * This routine will, depending on the values passed to it,
850 * either make it accept multicast packets, go into
851 * promiscuous mode (for TCPDUMP and cousins) or accept
852 * a select set of multicast packets
853 */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800854static void bfin_mac_set_multicast_list(struct net_device *dev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800855{
856 u32 sysctl;
857
858 if (dev->flags & IFF_PROMISC) {
859 printk(KERN_INFO "%s: set to promisc mode\n", dev->name);
860 sysctl = bfin_read_EMAC_OPMODE();
861 sysctl |= RAF;
862 bfin_write_EMAC_OPMODE(sysctl);
Aidan Williams775919b2008-01-30 16:52:23 +0800863 } else if (dev->flags & IFF_ALLMULTI) {
Bryan Wue190d6b2007-07-17 14:43:44 +0800864 /* accept all multicast */
865 sysctl = bfin_read_EMAC_OPMODE();
866 sysctl |= PAM;
867 bfin_write_EMAC_OPMODE(sysctl);
Aidan Williams775919b2008-01-30 16:52:23 +0800868 } else if (dev->mc_count) {
869 /* set up multicast hash table */
870 sysctl = bfin_read_EMAC_OPMODE();
871 sysctl |= HM;
872 bfin_write_EMAC_OPMODE(sysctl);
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800873 bfin_mac_multicast_hash(dev);
Bryan Wue190d6b2007-07-17 14:43:44 +0800874 } else {
875 /* clear promisc or multicast mode */
876 sysctl = bfin_read_EMAC_OPMODE();
877 sysctl &= ~(RAF | PAM);
878 bfin_write_EMAC_OPMODE(sysctl);
879 }
880}
881
882/*
883 * this puts the device in an inactive state
884 */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800885static void bfin_mac_shutdown(struct net_device *dev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800886{
887 /* Turn off the EMAC */
888 bfin_write_EMAC_OPMODE(0x00000000);
889 /* Turn off the EMAC RX DMA */
890 bfin_write_DMA1_CONFIG(0x0000);
891 bfin_write_DMA2_CONFIG(0x0000);
892}
893
894/*
895 * Open and Initialize the interface
896 *
897 * Set up everything, reset the card, etc..
898 */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800899static int bfin_mac_open(struct net_device *dev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800900{
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800901 struct bfin_mac_local *lp = netdev_priv(dev);
Michael Hennerich4af4b842007-07-25 14:09:54 +0800902 int retval;
Bryan Wue190d6b2007-07-17 14:43:44 +0800903 pr_debug("%s: %s\n", dev->name, __FUNCTION__);
904
905 /*
906 * Check that the address is valid. If its not, refuse
907 * to bring the device up. The user must specify an
908 * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
909 */
910 if (!is_valid_ether_addr(dev->dev_addr)) {
911 printk(KERN_WARNING DRV_NAME ": no valid ethernet hw addr\n");
912 return -EINVAL;
913 }
914
915 /* initial rx and tx list */
Michael Hennerich4af4b842007-07-25 14:09:54 +0800916 retval = desc_list_init();
917
918 if (retval)
919 return retval;
Bryan Wue190d6b2007-07-17 14:43:44 +0800920
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800921 phy_start(lp->phydev);
Vitja Makarov136492b2008-01-30 16:52:26 +0800922 phy_write(lp->phydev, MII_BMCR, BMCR_RESET);
Bryan Wue190d6b2007-07-17 14:43:44 +0800923 setup_system_regs(dev);
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800924 bfin_mac_disable();
925 bfin_mac_enable();
Bryan Wue190d6b2007-07-17 14:43:44 +0800926 pr_debug("hardware init finished\n");
927 netif_start_queue(dev);
928 netif_carrier_on(dev);
929
930 return 0;
931}
932
933/*
934 *
935 * this makes the board clean up everything that it can
936 * and not talk to the outside world. Caused by
937 * an 'ifconfig ethX down'
938 */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800939static int bfin_mac_close(struct net_device *dev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800940{
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800941 struct bfin_mac_local *lp = netdev_priv(dev);
Bryan Wue190d6b2007-07-17 14:43:44 +0800942 pr_debug("%s: %s\n", dev->name, __FUNCTION__);
943
944 netif_stop_queue(dev);
945 netif_carrier_off(dev);
946
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800947 phy_stop(lp->phydev);
Vitja Makarov136492b2008-01-30 16:52:26 +0800948 phy_write(lp->phydev, MII_BMCR, BMCR_PDOWN);
Bryan Wu4ae5a3a2007-09-19 23:37:36 +0800949
Bryan Wue190d6b2007-07-17 14:43:44 +0800950 /* clear everything */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800951 bfin_mac_shutdown(dev);
Bryan Wue190d6b2007-07-17 14:43:44 +0800952
953 /* free the rx/tx buffers */
954 desc_list_free();
955
956 return 0;
957}
958
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800959static int __init bfin_mac_probe(struct platform_device *pdev)
Bryan Wue190d6b2007-07-17 14:43:44 +0800960{
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800961 struct net_device *ndev;
962 struct bfin_mac_local *lp;
963 int rc, i;
964
965 ndev = alloc_etherdev(sizeof(struct bfin_mac_local));
966 if (!ndev) {
967 dev_err(&pdev->dev, "Cannot allocate net device!\n");
968 return -ENOMEM;
969 }
970
971 SET_NETDEV_DEV(ndev, &pdev->dev);
972 platform_set_drvdata(pdev, ndev);
973 lp = netdev_priv(ndev);
Bryan Wue190d6b2007-07-17 14:43:44 +0800974
975 /* Grab the MAC address in the MAC */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800976 *(__le32 *) (&(ndev->dev_addr[0])) = cpu_to_le32(bfin_read_EMAC_ADDRLO());
977 *(__le16 *) (&(ndev->dev_addr[4])) = cpu_to_le16((u16) bfin_read_EMAC_ADDRHI());
Bryan Wue190d6b2007-07-17 14:43:44 +0800978
979 /* probe mac */
980 /*todo: how to proble? which is revision_register */
981 bfin_write_EMAC_ADDRLO(0x12345678);
982 if (bfin_read_EMAC_ADDRLO() != 0x12345678) {
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800983 dev_err(&pdev->dev, "Cannot detect Blackfin on-chip ethernet MAC controller!\n");
984 rc = -ENODEV;
985 goto out_err_probe_mac;
Bryan Wue190d6b2007-07-17 14:43:44 +0800986 }
987
988 /* set the GPIO pins to Ethernet mode */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800989 rc = peripheral_request_list(pin_req, DRV_NAME);
990 if (rc) {
991 dev_err(&pdev->dev, "Requesting peripherals failed!\n");
992 rc = -EFAULT;
993 goto out_err_setup_pin_mux;
Bryan Wue190d6b2007-07-17 14:43:44 +0800994 }
995
Bryan Wu7ef0a7e2008-04-25 11:53:10 +0800996 /*
997 * Is it valid? (Did bootloader initialize it?)
998 * Grab the MAC from the board somehow
999 * this is done in the arch/blackfin/mach-bfxxx/boards/eth_mac.c
1000 */
1001 if (!is_valid_ether_addr(ndev->dev_addr))
1002 bfin_get_ether_addr(ndev->dev_addr);
1003
Bryan Wue190d6b2007-07-17 14:43:44 +08001004 /* If still not valid, get a random one */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001005 if (!is_valid_ether_addr(ndev->dev_addr))
1006 random_ether_addr(ndev->dev_addr);
Bryan Wue190d6b2007-07-17 14:43:44 +08001007
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001008 setup_mac_addr(ndev->dev_addr);
Bryan Wue190d6b2007-07-17 14:43:44 +08001009
Bryan Wu4ae5a3a2007-09-19 23:37:36 +08001010 /* MDIO bus initial */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001011 lp->mii_bus.priv = ndev;
Bryan Wu4ae5a3a2007-09-19 23:37:36 +08001012 lp->mii_bus.read = mdiobus_read;
1013 lp->mii_bus.write = mdiobus_write;
1014 lp->mii_bus.reset = mdiobus_reset;
1015 lp->mii_bus.name = "bfin_mac_mdio";
Andy Fleming9d9326d2008-04-09 19:38:13 -05001016 snprintf(lp->mii_bus.id, MII_BUS_ID_SIZE, "0");
Bryan Wu4ae5a3a2007-09-19 23:37:36 +08001017 lp->mii_bus.irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
1018 for (i = 0; i < PHY_MAX_ADDR; ++i)
1019 lp->mii_bus.irq[i] = PHY_POLL;
1020
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001021 rc = mdiobus_register(&lp->mii_bus);
1022 if (rc) {
1023 dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
1024 goto out_err_mdiobus_register;
1025 }
Bryan Wu4ae5a3a2007-09-19 23:37:36 +08001026
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001027 rc = mii_probe(ndev);
1028 if (rc) {
1029 dev_err(&pdev->dev, "MII Probe failed!\n");
1030 goto out_err_mii_probe;
1031 }
Bryan Wu4ae5a3a2007-09-19 23:37:36 +08001032
Bryan Wue190d6b2007-07-17 14:43:44 +08001033 /* Fill in the fields of the device structure with ethernet values. */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001034 ether_setup(ndev);
Bryan Wue190d6b2007-07-17 14:43:44 +08001035
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001036 ndev->open = bfin_mac_open;
1037 ndev->stop = bfin_mac_close;
1038 ndev->hard_start_xmit = bfin_mac_hard_start_xmit;
1039 ndev->set_mac_address = bfin_mac_set_mac_address;
1040 ndev->tx_timeout = bfin_mac_timeout;
1041 ndev->set_multicast_list = bfin_mac_set_multicast_list;
Bryan Wue190d6b2007-07-17 14:43:44 +08001042#ifdef CONFIG_NET_POLL_CONTROLLER
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001043 ndev->poll_controller = bfin_mac_poll;
Bryan Wue190d6b2007-07-17 14:43:44 +08001044#endif
Bryan Wu679dce32008-04-25 11:53:11 +08001045 ndev->ethtool_ops = &bfin_mac_ethtool_ops;
Bryan Wue190d6b2007-07-17 14:43:44 +08001046
Bryan Wue190d6b2007-07-17 14:43:44 +08001047 spin_lock_init(&lp->lock);
1048
1049 /* now, enable interrupts */
1050 /* register irq handler */
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001051 rc = request_irq(IRQ_MAC_RX, bfin_mac_interrupt,
1052 IRQF_DISABLED | IRQF_SHARED, "EMAC_RX", ndev);
1053 if (rc) {
1054 dev_err(&pdev->dev, "Cannot request Blackfin MAC RX IRQ!\n");
1055 rc = -EBUSY;
1056 goto out_err_request_irq;
Bryan Wue190d6b2007-07-17 14:43:44 +08001057 }
1058
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001059 rc = register_netdev(ndev);
1060 if (rc) {
1061 dev_err(&pdev->dev, "Cannot register net device!\n");
1062 goto out_err_reg_ndev;
Bryan Wue190d6b2007-07-17 14:43:44 +08001063 }
1064
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001065 /* now, print out the card info, in a short format.. */
1066 dev_info(&pdev->dev, "%s, Version %s\n", DRV_DESC, DRV_VERSION);
Bryan Wue190d6b2007-07-17 14:43:44 +08001067
1068 return 0;
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001069
1070out_err_reg_ndev:
1071 free_irq(IRQ_MAC_RX, ndev);
1072out_err_request_irq:
1073out_err_mii_probe:
1074 mdiobus_unregister(&lp->mii_bus);
1075out_err_mdiobus_register:
1076 peripheral_free_list(pin_req);
1077out_err_setup_pin_mux:
1078out_err_probe_mac:
1079 platform_set_drvdata(pdev, NULL);
1080 free_netdev(ndev);
1081
1082 return rc;
Bryan Wue190d6b2007-07-17 14:43:44 +08001083}
1084
1085static int bfin_mac_remove(struct platform_device *pdev)
1086{
1087 struct net_device *ndev = platform_get_drvdata(pdev);
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001088 struct bfin_mac_local *lp = netdev_priv(ndev);
Bryan Wue190d6b2007-07-17 14:43:44 +08001089
1090 platform_set_drvdata(pdev, NULL);
1091
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001092 mdiobus_unregister(&lp->mii_bus);
1093
Bryan Wue190d6b2007-07-17 14:43:44 +08001094 unregister_netdev(ndev);
1095
1096 free_irq(IRQ_MAC_RX, ndev);
1097
1098 free_netdev(ndev);
1099
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001100 peripheral_free_list(pin_req);
Bryan Wue190d6b2007-07-17 14:43:44 +08001101
1102 return 0;
1103}
1104
Bryan Wu496a34c2007-09-19 23:37:14 +08001105#ifdef CONFIG_PM
1106static int bfin_mac_suspend(struct platform_device *pdev, pm_message_t mesg)
Bryan Wue190d6b2007-07-17 14:43:44 +08001107{
Bryan Wu496a34c2007-09-19 23:37:14 +08001108 struct net_device *net_dev = platform_get_drvdata(pdev);
1109
1110 if (netif_running(net_dev))
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001111 bfin_mac_close(net_dev);
Bryan Wu496a34c2007-09-19 23:37:14 +08001112
Bryan Wue190d6b2007-07-17 14:43:44 +08001113 return 0;
1114}
1115
1116static int bfin_mac_resume(struct platform_device *pdev)
1117{
Bryan Wu496a34c2007-09-19 23:37:14 +08001118 struct net_device *net_dev = platform_get_drvdata(pdev);
1119
1120 if (netif_running(net_dev))
Bryan Wu7ef0a7e2008-04-25 11:53:10 +08001121 bfin_mac_open(net_dev);
Bryan Wu496a34c2007-09-19 23:37:14 +08001122
Bryan Wue190d6b2007-07-17 14:43:44 +08001123 return 0;
1124}
Bryan Wu496a34c2007-09-19 23:37:14 +08001125#else
1126#define bfin_mac_suspend NULL
1127#define bfin_mac_resume NULL
1128#endif /* CONFIG_PM */
Bryan Wue190d6b2007-07-17 14:43:44 +08001129
1130static struct platform_driver bfin_mac_driver = {
1131 .probe = bfin_mac_probe,
1132 .remove = bfin_mac_remove,
1133 .resume = bfin_mac_resume,
1134 .suspend = bfin_mac_suspend,
1135 .driver = {
Kay Sievers72abb462008-04-18 13:50:44 -07001136 .name = DRV_NAME,
1137 .owner = THIS_MODULE,
1138 },
Bryan Wue190d6b2007-07-17 14:43:44 +08001139};
1140
1141static int __init bfin_mac_init(void)
1142{
1143 return platform_driver_register(&bfin_mac_driver);
1144}
1145
1146module_init(bfin_mac_init);
1147
1148static void __exit bfin_mac_cleanup(void)
1149{
1150 platform_driver_unregister(&bfin_mac_driver);
1151}
1152
1153module_exit(bfin_mac_cleanup);
Kay Sievers72abb462008-04-18 13:50:44 -07001154