Commit | Line | Data |
---|---|---|
5efa1d1c | 1 | /* |
1da177e4 LT |
2 | * e100net.c: A network driver for the ETRAX 100LX network controller. |
3 | * | |
4 | * Copyright (c) 1998-2002 Axis Communications AB. | |
5 | * | |
6 | * The outline of this driver comes from skeleton.c. | |
7 | * | |
1da177e4 LT |
8 | */ |
9 | ||
1da177e4 LT |
10 | |
11 | #include <linux/module.h> | |
12 | ||
13 | #include <linux/kernel.h> | |
1da177e4 LT |
14 | #include <linux/delay.h> |
15 | #include <linux/types.h> | |
16 | #include <linux/fcntl.h> | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/ptrace.h> | |
19 | #include <linux/ioport.h> | |
20 | #include <linux/in.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/string.h> | |
23 | #include <linux/spinlock.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/init.h> | |
1977f032 | 26 | #include <linux/bitops.h> |
1da177e4 LT |
27 | |
28 | #include <linux/if.h> | |
29 | #include <linux/mii.h> | |
30 | #include <linux/netdevice.h> | |
31 | #include <linux/etherdevice.h> | |
32 | #include <linux/skbuff.h> | |
33 | #include <linux/ethtool.h> | |
34 | ||
556dcee7 | 35 | #include <arch/svinto.h>/* DMA and register descriptions */ |
5efa1d1c | 36 | #include <asm/io.h> /* CRIS_LED_* I/O functions */ |
1da177e4 LT |
37 | #include <asm/irq.h> |
38 | #include <asm/dma.h> | |
39 | #include <asm/system.h> | |
1da177e4 LT |
40 | #include <asm/ethernet.h> |
41 | #include <asm/cache.h> | |
556dcee7 | 42 | #include <arch/io_interface_mux.h> |
1da177e4 LT |
43 | |
44 | //#define ETHDEBUG | |
45 | #define D(x) | |
46 | ||
47 | /* | |
48 | * The name of the card. Is used for messages and in the requests for | |
49 | * io regions, irqs and dma channels | |
50 | */ | |
51 | ||
52 | static const char* cardname = "ETRAX 100LX built-in ethernet controller"; | |
53 | ||
54 | /* A default ethernet address. Highlevel SW will set the real one later */ | |
55 | ||
56 | static struct sockaddr default_mac = { | |
57 | 0, | |
58 | { 0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00 } | |
59 | }; | |
60 | ||
61 | /* Information that need to be kept for each board. */ | |
62 | struct net_local { | |
63 | struct net_device_stats stats; | |
64 | struct mii_if_info mii_if; | |
65 | ||
66 | /* Tx control lock. This protects the transmit buffer ring | |
67 | * state along with the "tx full" state of the driver. This | |
68 | * means all netif_queue flow control actions are protected | |
69 | * by this lock as well. | |
70 | */ | |
71 | spinlock_t lock; | |
bafef0ae JN |
72 | |
73 | spinlock_t led_lock; /* Protect LED state */ | |
74 | spinlock_t transceiver_lock; /* Protect transceiver state. */ | |
1da177e4 LT |
75 | }; |
76 | ||
77 | typedef struct etrax_eth_descr | |
78 | { | |
79 | etrax_dma_descr descr; | |
80 | struct sk_buff* skb; | |
81 | } etrax_eth_descr; | |
82 | ||
83 | /* Some transceivers requires special handling */ | |
84 | struct transceiver_ops | |
85 | { | |
86 | unsigned int oui; | |
87 | void (*check_speed)(struct net_device* dev); | |
88 | void (*check_duplex)(struct net_device* dev); | |
89 | }; | |
90 | ||
1da177e4 LT |
91 | /* Duplex settings */ |
92 | enum duplex | |
93 | { | |
94 | half, | |
95 | full, | |
96 | autoneg | |
97 | }; | |
98 | ||
99 | /* Dma descriptors etc. */ | |
100 | ||
bafef0ae | 101 | #define MAX_MEDIA_DATA_SIZE 1522 |
1da177e4 LT |
102 | |
103 | #define MIN_PACKET_LEN 46 | |
104 | #define ETHER_HEAD_LEN 14 | |
105 | ||
106 | /* | |
107 | ** MDIO constants. | |
108 | */ | |
109 | #define MDIO_START 0x1 | |
110 | #define MDIO_READ 0x2 | |
111 | #define MDIO_WRITE 0x1 | |
112 | #define MDIO_PREAMBLE 0xfffffffful | |
113 | ||
114 | /* Broadcom specific */ | |
115 | #define MDIO_AUX_CTRL_STATUS_REG 0x18 | |
116 | #define MDIO_BC_FULL_DUPLEX_IND 0x1 | |
117 | #define MDIO_BC_SPEED 0x2 | |
118 | ||
119 | /* TDK specific */ | |
120 | #define MDIO_TDK_DIAGNOSTIC_REG 18 | |
121 | #define MDIO_TDK_DIAGNOSTIC_RATE 0x400 | |
122 | #define MDIO_TDK_DIAGNOSTIC_DPLX 0x800 | |
123 | ||
124 | /*Intel LXT972A specific*/ | |
125 | #define MDIO_INT_STATUS_REG_2 0x0011 | |
bafef0ae JN |
126 | #define MDIO_INT_FULL_DUPLEX_IND (1 << 9) |
127 | #define MDIO_INT_SPEED (1 << 14) | |
1da177e4 LT |
128 | |
129 | /* Network flash constants */ | |
130 | #define NET_FLASH_TIME (HZ/50) /* 20 ms */ | |
131 | #define NET_FLASH_PAUSE (HZ/100) /* 10 ms */ | |
132 | #define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 s */ | |
133 | #define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 s */ | |
134 | ||
135 | #define NO_NETWORK_ACTIVITY 0 | |
136 | #define NETWORK_ACTIVITY 1 | |
137 | ||
bafef0ae JN |
138 | #define NBR_OF_RX_DESC 32 |
139 | #define NBR_OF_TX_DESC 16 | |
1da177e4 LT |
140 | |
141 | /* Large packets are sent directly to upper layers while small packets are */ | |
142 | /* copied (to reduce memory waste). The following constant decides the breakpoint */ | |
143 | #define RX_COPYBREAK 256 | |
144 | ||
145 | /* Due to a chip bug we need to flush the cache when descriptors are returned */ | |
146 | /* to the DMA. To decrease performance impact we return descriptors in chunks. */ | |
147 | /* The following constant determines the number of descriptors to return. */ | |
148 | #define RX_QUEUE_THRESHOLD NBR_OF_RX_DESC/2 | |
149 | ||
150 | #define GET_BIT(bit,val) (((val) >> (bit)) & 0x01) | |
151 | ||
152 | /* Define some macros to access ETRAX 100 registers */ | |
153 | #define SETF(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \ | |
154 | IO_FIELD_(reg##_, field##_, val) | |
155 | #define SETS(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \ | |
156 | IO_STATE_(reg##_, field##_, _##val) | |
157 | ||
158 | static etrax_eth_descr *myNextRxDesc; /* Points to the next descriptor to | |
159 | to be processed */ | |
160 | static etrax_eth_descr *myLastRxDesc; /* The last processed descriptor */ | |
1da177e4 LT |
161 | |
162 | static etrax_eth_descr RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned(32))); | |
163 | ||
164 | static etrax_eth_descr* myFirstTxDesc; /* First packet not yet sent */ | |
165 | static etrax_eth_descr* myLastTxDesc; /* End of send queue */ | |
166 | static etrax_eth_descr* myNextTxDesc; /* Next descriptor to use */ | |
167 | static etrax_eth_descr TxDescList[NBR_OF_TX_DESC] __attribute__ ((aligned(32))); | |
168 | ||
169 | static unsigned int network_rec_config_shadow = 0; | |
1da177e4 LT |
170 | |
171 | static unsigned int network_tr_ctrl_shadow = 0; | |
172 | ||
173 | /* Network speed indication. */ | |
8d06afab IM |
174 | static DEFINE_TIMER(speed_timer, NULL, 0, 0); |
175 | static DEFINE_TIMER(clear_led_timer, NULL, 0, 0); | |
1da177e4 LT |
176 | static int current_speed; /* Speed read from transceiver */ |
177 | static int current_speed_selection; /* Speed selected by user */ | |
178 | static unsigned long led_next_time; | |
179 | static int led_active; | |
180 | static int rx_queue_len; | |
181 | ||
182 | /* Duplex */ | |
8d06afab | 183 | static DEFINE_TIMER(duplex_timer, NULL, 0, 0); |
1da177e4 LT |
184 | static int full_duplex; |
185 | static enum duplex current_duplex; | |
186 | ||
187 | /* Index to functions, as function prototypes. */ | |
188 | ||
189 | static int etrax_ethernet_init(void); | |
190 | ||
191 | static int e100_open(struct net_device *dev); | |
192 | static int e100_set_mac_address(struct net_device *dev, void *addr); | |
193 | static int e100_send_packet(struct sk_buff *skb, struct net_device *dev); | |
7d12e780 DH |
194 | static irqreturn_t e100rxtx_interrupt(int irq, void *dev_id); |
195 | static irqreturn_t e100nw_interrupt(int irq, void *dev_id); | |
1da177e4 LT |
196 | static void e100_rx(struct net_device *dev); |
197 | static int e100_close(struct net_device *dev); | |
198 | static int e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd); | |
1da177e4 LT |
199 | static int e100_set_config(struct net_device* dev, struct ifmap* map); |
200 | static void e100_tx_timeout(struct net_device *dev); | |
201 | static struct net_device_stats *e100_get_stats(struct net_device *dev); | |
202 | static void set_multicast_list(struct net_device *dev); | |
bafef0ae | 203 | static void e100_hardware_send_packet(struct net_local* np, char *buf, int length); |
1da177e4 LT |
204 | static void update_rx_stats(struct net_device_stats *); |
205 | static void update_tx_stats(struct net_device_stats *); | |
206 | static int e100_probe_transceiver(struct net_device* dev); | |
207 | ||
208 | static void e100_check_speed(unsigned long priv); | |
209 | static void e100_set_speed(struct net_device* dev, unsigned long speed); | |
210 | static void e100_check_duplex(unsigned long priv); | |
211 | static void e100_set_duplex(struct net_device* dev, enum duplex); | |
212 | static void e100_negotiate(struct net_device* dev); | |
213 | ||
214 | static int e100_get_mdio_reg(struct net_device *dev, int phy_id, int location); | |
215 | static void e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value); | |
216 | ||
217 | static void e100_send_mdio_cmd(unsigned short cmd, int write_cmd); | |
218 | static void e100_send_mdio_bit(unsigned char bit); | |
219 | static unsigned char e100_receive_mdio_bit(void); | |
220 | static void e100_reset_transceiver(struct net_device* net); | |
221 | ||
222 | static void e100_clear_network_leds(unsigned long dummy); | |
223 | static void e100_set_network_leds(int active); | |
224 | ||
7282d491 | 225 | static const struct ethtool_ops e100_ethtool_ops; |
bafef0ae JN |
226 | #if defined(CONFIG_ETRAX_NO_PHY) |
227 | static void dummy_check_speed(struct net_device* dev); | |
228 | static void dummy_check_duplex(struct net_device* dev); | |
229 | #else | |
1da177e4 LT |
230 | static void broadcom_check_speed(struct net_device* dev); |
231 | static void broadcom_check_duplex(struct net_device* dev); | |
232 | static void tdk_check_speed(struct net_device* dev); | |
233 | static void tdk_check_duplex(struct net_device* dev); | |
234 | static void intel_check_speed(struct net_device* dev); | |
235 | static void intel_check_duplex(struct net_device* dev); | |
236 | static void generic_check_speed(struct net_device* dev); | |
237 | static void generic_check_duplex(struct net_device* dev); | |
bafef0ae JN |
238 | #endif |
239 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
240 | static void e100_netpoll(struct net_device* dev); | |
241 | #endif | |
242 | ||
243 | static int autoneg_normal = 1; | |
1da177e4 LT |
244 | |
245 | struct transceiver_ops transceivers[] = | |
246 | { | |
bafef0ae JN |
247 | #if defined(CONFIG_ETRAX_NO_PHY) |
248 | {0x0000, dummy_check_speed, dummy_check_duplex} /* Dummy */ | |
249 | #else | |
1da177e4 LT |
250 | {0x1018, broadcom_check_speed, broadcom_check_duplex}, /* Broadcom */ |
251 | {0xC039, tdk_check_speed, tdk_check_duplex}, /* TDK 2120 */ | |
252 | {0x039C, tdk_check_speed, tdk_check_duplex}, /* TDK 2120C */ | |
253 | {0x04de, intel_check_speed, intel_check_duplex}, /* Intel LXT972A*/ | |
254 | {0x0000, generic_check_speed, generic_check_duplex} /* Generic, must be last */ | |
bafef0ae | 255 | #endif |
1da177e4 LT |
256 | }; |
257 | ||
bafef0ae JN |
258 | struct transceiver_ops* transceiver = &transceivers[0]; |
259 | ||
a95c2a3b AB |
260 | static const struct net_device_ops e100_netdev_ops = { |
261 | .ndo_open = e100_open, | |
262 | .ndo_stop = e100_close, | |
263 | .ndo_start_xmit = e100_send_packet, | |
264 | .ndo_tx_timeout = e100_tx_timeout, | |
265 | .ndo_get_stats = e100_get_stats, | |
266 | .ndo_set_multicast_list = set_multicast_list, | |
267 | .ndo_do_ioctl = e100_ioctl, | |
268 | .ndo_set_mac_address = e100_set_mac_address, | |
269 | .ndo_validate_addr = eth_validate_addr, | |
270 | .ndo_change_mtu = eth_change_mtu, | |
271 | .ndo_set_config = e100_set_config, | |
272 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
273 | .ndo_poll_controller = e100_netpoll, | |
274 | #endif | |
275 | }; | |
276 | ||
1da177e4 LT |
277 | #define tx_done(dev) (*R_DMA_CH0_CMD == 0) |
278 | ||
279 | /* | |
280 | * Check for a network adaptor of this type, and return '0' if one exists. | |
281 | * If dev->base_addr == 0, probe all likely locations. | |
282 | * If dev->base_addr == 1, always return failure. | |
283 | * If dev->base_addr == 2, allocate space for the device and return success | |
284 | * (detachable devices only). | |
285 | */ | |
286 | ||
287 | static int __init | |
288 | etrax_ethernet_init(void) | |
289 | { | |
290 | struct net_device *dev; | |
291 | struct net_local* np; | |
292 | int i, err; | |
293 | ||
294 | printk(KERN_INFO | |
bafef0ae | 295 | "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 1998-2007 Axis Communications AB\n"); |
1da177e4 | 296 | |
bafef0ae JN |
297 | if (cris_request_io_interface(if_eth, cardname)) { |
298 | printk(KERN_CRIT "etrax_ethernet_init failed to get IO interface\n"); | |
299 | return -EBUSY; | |
300 | } | |
1da177e4 | 301 | |
bafef0ae | 302 | dev = alloc_etherdev(sizeof(struct net_local)); |
1da177e4 LT |
303 | if (!dev) |
304 | return -ENOMEM; | |
305 | ||
bafef0ae JN |
306 | np = netdev_priv(dev); |
307 | ||
308 | /* we do our own locking */ | |
309 | dev->features |= NETIF_F_LLTX; | |
310 | ||
1da177e4 LT |
311 | dev->base_addr = (unsigned int)R_NETWORK_SA_0; /* just to have something to show */ |
312 | ||
313 | /* now setup our etrax specific stuff */ | |
314 | ||
315 | dev->irq = NETWORK_DMA_RX_IRQ_NBR; /* we really use DMATX as well... */ | |
316 | dev->dma = NETWORK_RX_DMA_NBR; | |
317 | ||
318 | /* fill in our handlers so the network layer can talk to us in the future */ | |
319 | ||
76f2b4d9 | 320 | dev->ethtool_ops = &e100_ethtool_ops; |
a95c2a3b | 321 | dev->netdev_ops = &e100_netdev_ops; |
bafef0ae JN |
322 | |
323 | spin_lock_init(&np->lock); | |
324 | spin_lock_init(&np->led_lock); | |
325 | spin_lock_init(&np->transceiver_lock); | |
1da177e4 LT |
326 | |
327 | /* Initialise the list of Etrax DMA-descriptors */ | |
328 | ||
329 | /* Initialise receive descriptors */ | |
330 | ||
331 | for (i = 0; i < NBR_OF_RX_DESC; i++) { | |
bafef0ae JN |
332 | /* Allocate two extra cachelines to make sure that buffer used |
333 | * by DMA does not share cacheline with any other data (to | |
334 | * avoid cache bug) | |
1da177e4 LT |
335 | */ |
336 | RxDescList[i].skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); | |
92b1f905 DR |
337 | if (!RxDescList[i].skb) |
338 | return -ENOMEM; | |
1da177e4 LT |
339 | RxDescList[i].descr.ctrl = 0; |
340 | RxDescList[i].descr.sw_len = MAX_MEDIA_DATA_SIZE; | |
341 | RxDescList[i].descr.next = virt_to_phys(&RxDescList[i + 1]); | |
342 | RxDescList[i].descr.buf = L1_CACHE_ALIGN(virt_to_phys(RxDescList[i].skb->data)); | |
343 | RxDescList[i].descr.status = 0; | |
344 | RxDescList[i].descr.hw_len = 0; | |
345 | prepare_rx_descriptor(&RxDescList[i].descr); | |
346 | } | |
347 | ||
348 | RxDescList[NBR_OF_RX_DESC - 1].descr.ctrl = d_eol; | |
349 | RxDescList[NBR_OF_RX_DESC - 1].descr.next = virt_to_phys(&RxDescList[0]); | |
350 | rx_queue_len = 0; | |
351 | ||
352 | /* Initialize transmit descriptors */ | |
353 | for (i = 0; i < NBR_OF_TX_DESC; i++) { | |
354 | TxDescList[i].descr.ctrl = 0; | |
355 | TxDescList[i].descr.sw_len = 0; | |
356 | TxDescList[i].descr.next = virt_to_phys(&TxDescList[i + 1].descr); | |
357 | TxDescList[i].descr.buf = 0; | |
358 | TxDescList[i].descr.status = 0; | |
359 | TxDescList[i].descr.hw_len = 0; | |
360 | TxDescList[i].skb = 0; | |
361 | } | |
362 | ||
363 | TxDescList[NBR_OF_TX_DESC - 1].descr.ctrl = d_eol; | |
364 | TxDescList[NBR_OF_TX_DESC - 1].descr.next = virt_to_phys(&TxDescList[0].descr); | |
365 | ||
366 | /* Initialise initial pointers */ | |
367 | ||
368 | myNextRxDesc = &RxDescList[0]; | |
369 | myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1]; | |
1da177e4 LT |
370 | myFirstTxDesc = &TxDescList[0]; |
371 | myNextTxDesc = &TxDescList[0]; | |
372 | myLastTxDesc = &TxDescList[NBR_OF_TX_DESC - 1]; | |
373 | ||
374 | /* Register device */ | |
375 | err = register_netdev(dev); | |
376 | if (err) { | |
377 | free_netdev(dev); | |
378 | return err; | |
379 | } | |
380 | ||
381 | /* set the default MAC address */ | |
382 | ||
383 | e100_set_mac_address(dev, &default_mac); | |
384 | ||
385 | /* Initialize speed indicator stuff. */ | |
386 | ||
387 | current_speed = 10; | |
388 | current_speed_selection = 0; /* Auto */ | |
389 | speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; | |
bafef0ae | 390 | speed_timer.data = (unsigned long)dev; |
1da177e4 LT |
391 | speed_timer.function = e100_check_speed; |
392 | ||
393 | clear_led_timer.function = e100_clear_network_leds; | |
bafef0ae | 394 | clear_led_timer.data = (unsigned long)dev; |
1da177e4 LT |
395 | |
396 | full_duplex = 0; | |
397 | current_duplex = autoneg; | |
398 | duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; | |
399 | duplex_timer.data = (unsigned long)dev; | |
400 | duplex_timer.function = e100_check_duplex; | |
401 | ||
402 | /* Initialize mii interface */ | |
1da177e4 LT |
403 | np->mii_if.phy_id_mask = 0x1f; |
404 | np->mii_if.reg_num_mask = 0x1f; | |
405 | np->mii_if.dev = dev; | |
406 | np->mii_if.mdio_read = e100_get_mdio_reg; | |
407 | np->mii_if.mdio_write = e100_set_mdio_reg; | |
408 | ||
409 | /* Initialize group address registers to make sure that no */ | |
410 | /* unwanted addresses are matched */ | |
411 | *R_NETWORK_GA_0 = 0x00000000; | |
412 | *R_NETWORK_GA_1 = 0x00000000; | |
bafef0ae JN |
413 | |
414 | /* Initialize next time the led can flash */ | |
415 | led_next_time = jiffies; | |
1da177e4 LT |
416 | return 0; |
417 | } | |
418 | ||
419 | /* set MAC address of the interface. called from the core after a | |
420 | * SIOCSIFADDR ioctl, and from the bootup above. | |
421 | */ | |
422 | ||
423 | static int | |
424 | e100_set_mac_address(struct net_device *dev, void *p) | |
425 | { | |
bafef0ae | 426 | struct net_local *np = netdev_priv(dev); |
1da177e4 | 427 | struct sockaddr *addr = p; |
1da177e4 LT |
428 | |
429 | spin_lock(&np->lock); /* preemption protection */ | |
430 | ||
431 | /* remember it */ | |
432 | ||
433 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
434 | ||
435 | /* Write it to the hardware. | |
436 | * Note the way the address is wrapped: | |
437 | * *R_NETWORK_SA_0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24); | |
438 | * *R_NETWORK_SA_1 = a0_4 | (a0_5 << 8); | |
439 | */ | |
440 | ||
441 | *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | | |
442 | (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); | |
443 | *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8); | |
444 | *R_NETWORK_SA_2 = 0; | |
445 | ||
446 | /* show it in the log as well */ | |
447 | ||
e174961c | 448 | printk(KERN_INFO "%s: changed MAC to %pM\n", dev->name, dev->dev_addr); |
1da177e4 LT |
449 | |
450 | spin_unlock(&np->lock); | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
455 | /* | |
456 | * Open/initialize the board. This is called (in the current kernel) | |
457 | * sometime after booting when the 'ifconfig' program is run. | |
458 | * | |
459 | * This routine should set everything up anew at each open, even | |
460 | * registers that "should" only need to be set once at boot, so that | |
461 | * there is non-reboot way to recover if something goes wrong. | |
462 | */ | |
463 | ||
464 | static int | |
465 | e100_open(struct net_device *dev) | |
466 | { | |
467 | unsigned long flags; | |
468 | ||
469 | /* enable the MDIO output pin */ | |
470 | ||
471 | *R_NETWORK_MGM_CTRL = IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable); | |
472 | ||
473 | *R_IRQ_MASK0_CLR = | |
474 | IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) | | |
475 | IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) | | |
476 | IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr); | |
477 | ||
478 | /* clear dma0 and 1 eop and descr irq masks */ | |
479 | *R_IRQ_MASK2_CLR = | |
480 | IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) | | |
481 | IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | | |
482 | IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) | | |
483 | IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); | |
484 | ||
485 | /* Reset and wait for the DMA channels */ | |
486 | ||
487 | RESET_DMA(NETWORK_TX_DMA_NBR); | |
488 | RESET_DMA(NETWORK_RX_DMA_NBR); | |
489 | WAIT_DMA(NETWORK_TX_DMA_NBR); | |
490 | WAIT_DMA(NETWORK_RX_DMA_NBR); | |
491 | ||
492 | /* Initialise the etrax network controller */ | |
493 | ||
494 | /* allocate the irq corresponding to the receiving DMA */ | |
495 | ||
496 | if (request_irq(NETWORK_DMA_RX_IRQ_NBR, e100rxtx_interrupt, | |
1fb9df5d | 497 | IRQF_SAMPLE_RANDOM, cardname, (void *)dev)) { |
1da177e4 LT |
498 | goto grace_exit0; |
499 | } | |
500 | ||
501 | /* allocate the irq corresponding to the transmitting DMA */ | |
502 | ||
503 | if (request_irq(NETWORK_DMA_TX_IRQ_NBR, e100rxtx_interrupt, 0, | |
504 | cardname, (void *)dev)) { | |
505 | goto grace_exit1; | |
506 | } | |
507 | ||
508 | /* allocate the irq corresponding to the network errors etc */ | |
509 | ||
510 | if (request_irq(NETWORK_STATUS_IRQ_NBR, e100nw_interrupt, 0, | |
511 | cardname, (void *)dev)) { | |
512 | goto grace_exit2; | |
513 | } | |
514 | ||
bafef0ae JN |
515 | /* |
516 | * Always allocate the DMA channels after the IRQ, | |
517 | * and clean up on failure. | |
518 | */ | |
519 | ||
520 | if (cris_request_dma(NETWORK_TX_DMA_NBR, | |
521 | cardname, | |
522 | DMA_VERBOSE_ON_ERROR, | |
523 | dma_eth)) { | |
524 | goto grace_exit3; | |
525 | } | |
526 | ||
527 | if (cris_request_dma(NETWORK_RX_DMA_NBR, | |
528 | cardname, | |
529 | DMA_VERBOSE_ON_ERROR, | |
530 | dma_eth)) { | |
531 | goto grace_exit4; | |
532 | } | |
533 | ||
1da177e4 LT |
534 | /* give the HW an idea of what MAC address we want */ |
535 | ||
536 | *R_NETWORK_SA_0 = dev->dev_addr[0] | (dev->dev_addr[1] << 8) | | |
537 | (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); | |
538 | *R_NETWORK_SA_1 = dev->dev_addr[4] | (dev->dev_addr[5] << 8); | |
539 | *R_NETWORK_SA_2 = 0; | |
540 | ||
541 | #if 0 | |
542 | /* use promiscuous mode for testing */ | |
543 | *R_NETWORK_GA_0 = 0xffffffff; | |
544 | *R_NETWORK_GA_1 = 0xffffffff; | |
545 | ||
546 | *R_NETWORK_REC_CONFIG = 0xd; /* broadcast rec, individ. rec, ma0 enabled */ | |
547 | #else | |
bafef0ae | 548 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, max_size, size1522); |
1da177e4 LT |
549 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, broadcast, receive); |
550 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, ma0, enable); | |
551 | SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); | |
552 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
553 | #endif | |
554 | ||
555 | *R_NETWORK_GEN_CONFIG = | |
556 | IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk) | | |
557 | IO_STATE(R_NETWORK_GEN_CONFIG, enable, on); | |
558 | ||
559 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); | |
560 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, delay, none); | |
561 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cancel, dont); | |
562 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, cd, enable); | |
563 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, retry, enable); | |
564 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, pad, enable); | |
565 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, crc, enable); | |
566 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; | |
567 | ||
bafef0ae | 568 | local_irq_save(flags); |
1da177e4 LT |
569 | |
570 | /* enable the irq's for ethernet DMA */ | |
571 | ||
572 | *R_IRQ_MASK2_SET = | |
573 | IO_STATE(R_IRQ_MASK2_SET, dma0_eop, set) | | |
574 | IO_STATE(R_IRQ_MASK2_SET, dma1_eop, set); | |
575 | ||
576 | *R_IRQ_MASK0_SET = | |
577 | IO_STATE(R_IRQ_MASK0_SET, overrun, set) | | |
578 | IO_STATE(R_IRQ_MASK0_SET, underrun, set) | | |
579 | IO_STATE(R_IRQ_MASK0_SET, excessive_col, set); | |
580 | ||
581 | /* make sure the irqs are cleared */ | |
582 | ||
583 | *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); | |
584 | *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do); | |
585 | ||
586 | /* make sure the rec and transmit error counters are cleared */ | |
587 | ||
588 | (void)*R_REC_COUNTERS; /* dummy read */ | |
589 | (void)*R_TR_COUNTERS; /* dummy read */ | |
590 | ||
591 | /* start the receiving DMA channel so we can receive packets from now on */ | |
592 | ||
593 | *R_DMA_CH1_FIRST = virt_to_phys(myNextRxDesc); | |
594 | *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, start); | |
595 | ||
596 | /* Set up transmit DMA channel so it can be restarted later */ | |
597 | ||
598 | *R_DMA_CH0_FIRST = 0; | |
599 | *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); | |
bafef0ae | 600 | netif_start_queue(dev); |
1da177e4 | 601 | |
bafef0ae | 602 | local_irq_restore(flags); |
1da177e4 LT |
603 | |
604 | /* Probe for transceiver */ | |
605 | if (e100_probe_transceiver(dev)) | |
bafef0ae | 606 | goto grace_exit5; |
1da177e4 LT |
607 | |
608 | /* Start duplex/speed timers */ | |
609 | add_timer(&speed_timer); | |
610 | add_timer(&duplex_timer); | |
611 | ||
612 | /* We are now ready to accept transmit requeusts from | |
613 | * the queueing layer of the networking. | |
614 | */ | |
bafef0ae | 615 | netif_carrier_on(dev); |
1da177e4 LT |
616 | |
617 | return 0; | |
618 | ||
bafef0ae JN |
619 | grace_exit5: |
620 | cris_free_dma(NETWORK_RX_DMA_NBR, cardname); | |
621 | grace_exit4: | |
622 | cris_free_dma(NETWORK_TX_DMA_NBR, cardname); | |
1da177e4 LT |
623 | grace_exit3: |
624 | free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); | |
625 | grace_exit2: | |
626 | free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); | |
627 | grace_exit1: | |
628 | free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev); | |
629 | grace_exit0: | |
630 | return -EAGAIN; | |
631 | } | |
632 | ||
bafef0ae JN |
633 | #if defined(CONFIG_ETRAX_NO_PHY) |
634 | static void | |
635 | dummy_check_speed(struct net_device* dev) | |
636 | { | |
637 | current_speed = 100; | |
638 | } | |
639 | #else | |
1da177e4 LT |
640 | static void |
641 | generic_check_speed(struct net_device* dev) | |
642 | { | |
643 | unsigned long data; | |
bafef0ae JN |
644 | struct net_local *np = netdev_priv(dev); |
645 | ||
646 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE); | |
1da177e4 LT |
647 | if ((data & ADVERTISE_100FULL) || |
648 | (data & ADVERTISE_100HALF)) | |
649 | current_speed = 100; | |
650 | else | |
651 | current_speed = 10; | |
652 | } | |
653 | ||
654 | static void | |
655 | tdk_check_speed(struct net_device* dev) | |
656 | { | |
657 | unsigned long data; | |
bafef0ae JN |
658 | struct net_local *np = netdev_priv(dev); |
659 | ||
660 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
661 | MDIO_TDK_DIAGNOSTIC_REG); | |
1da177e4 LT |
662 | current_speed = (data & MDIO_TDK_DIAGNOSTIC_RATE ? 100 : 10); |
663 | } | |
664 | ||
665 | static void | |
666 | broadcom_check_speed(struct net_device* dev) | |
667 | { | |
668 | unsigned long data; | |
bafef0ae JN |
669 | struct net_local *np = netdev_priv(dev); |
670 | ||
671 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
672 | MDIO_AUX_CTRL_STATUS_REG); | |
1da177e4 LT |
673 | current_speed = (data & MDIO_BC_SPEED ? 100 : 10); |
674 | } | |
675 | ||
676 | static void | |
677 | intel_check_speed(struct net_device* dev) | |
678 | { | |
679 | unsigned long data; | |
bafef0ae JN |
680 | struct net_local *np = netdev_priv(dev); |
681 | ||
682 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
683 | MDIO_INT_STATUS_REG_2); | |
1da177e4 LT |
684 | current_speed = (data & MDIO_INT_SPEED ? 100 : 10); |
685 | } | |
bafef0ae | 686 | #endif |
1da177e4 LT |
687 | static void |
688 | e100_check_speed(unsigned long priv) | |
689 | { | |
690 | struct net_device* dev = (struct net_device*)priv; | |
bafef0ae | 691 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
692 | static int led_initiated = 0; |
693 | unsigned long data; | |
694 | int old_speed = current_speed; | |
695 | ||
bafef0ae JN |
696 | spin_lock(&np->transceiver_lock); |
697 | ||
698 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMSR); | |
1da177e4 LT |
699 | if (!(data & BMSR_LSTATUS)) { |
700 | current_speed = 0; | |
701 | } else { | |
702 | transceiver->check_speed(dev); | |
703 | } | |
704 | ||
bafef0ae | 705 | spin_lock(&np->led_lock); |
1da177e4 LT |
706 | if ((old_speed != current_speed) || !led_initiated) { |
707 | led_initiated = 1; | |
708 | e100_set_network_leds(NO_NETWORK_ACTIVITY); | |
bafef0ae JN |
709 | if (current_speed) |
710 | netif_carrier_on(dev); | |
711 | else | |
712 | netif_carrier_off(dev); | |
1da177e4 | 713 | } |
bafef0ae | 714 | spin_unlock(&np->led_lock); |
1da177e4 LT |
715 | |
716 | /* Reinitialize the timer. */ | |
717 | speed_timer.expires = jiffies + NET_LINK_UP_CHECK_INTERVAL; | |
718 | add_timer(&speed_timer); | |
bafef0ae JN |
719 | |
720 | spin_unlock(&np->transceiver_lock); | |
1da177e4 LT |
721 | } |
722 | ||
723 | static void | |
724 | e100_negotiate(struct net_device* dev) | |
725 | { | |
bafef0ae JN |
726 | struct net_local *np = netdev_priv(dev); |
727 | unsigned short data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
728 | MII_ADVERTISE); | |
1da177e4 LT |
729 | |
730 | /* Discard old speed and duplex settings */ | |
731 | data &= ~(ADVERTISE_100HALF | ADVERTISE_100FULL | | |
732 | ADVERTISE_10HALF | ADVERTISE_10FULL); | |
733 | ||
734 | switch (current_speed_selection) { | |
bafef0ae | 735 | case 10: |
1da177e4 LT |
736 | if (current_duplex == full) |
737 | data |= ADVERTISE_10FULL; | |
738 | else if (current_duplex == half) | |
739 | data |= ADVERTISE_10HALF; | |
740 | else | |
741 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL; | |
742 | break; | |
743 | ||
bafef0ae | 744 | case 100: |
1da177e4 LT |
745 | if (current_duplex == full) |
746 | data |= ADVERTISE_100FULL; | |
747 | else if (current_duplex == half) | |
748 | data |= ADVERTISE_100HALF; | |
749 | else | |
750 | data |= ADVERTISE_100HALF | ADVERTISE_100FULL; | |
751 | break; | |
752 | ||
bafef0ae | 753 | case 0: /* Auto */ |
1da177e4 LT |
754 | if (current_duplex == full) |
755 | data |= ADVERTISE_100FULL | ADVERTISE_10FULL; | |
756 | else if (current_duplex == half) | |
757 | data |= ADVERTISE_100HALF | ADVERTISE_10HALF; | |
758 | else | |
759 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL | | |
760 | ADVERTISE_100HALF | ADVERTISE_100FULL; | |
761 | break; | |
762 | ||
bafef0ae | 763 | default: /* assume autoneg speed and duplex */ |
1da177e4 LT |
764 | data |= ADVERTISE_10HALF | ADVERTISE_10FULL | |
765 | ADVERTISE_100HALF | ADVERTISE_100FULL; | |
bafef0ae | 766 | break; |
1da177e4 LT |
767 | } |
768 | ||
bafef0ae | 769 | e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE, data); |
1da177e4 | 770 | |
e6cd1974 | 771 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR); |
bafef0ae | 772 | if (autoneg_normal) { |
e6cd1974 JN |
773 | /* Renegotiate with link partner */ |
774 | data |= BMCR_ANENABLE | BMCR_ANRESTART; | |
775 | } else { | |
776 | /* Don't negotiate speed or duplex */ | |
777 | data &= ~(BMCR_ANENABLE | BMCR_ANRESTART); | |
778 | ||
779 | /* Set speed and duplex static */ | |
780 | if (current_speed_selection == 10) | |
781 | data &= ~BMCR_SPEED100; | |
782 | else | |
783 | data |= BMCR_SPEED100; | |
784 | ||
785 | if (current_duplex != full) | |
786 | data &= ~BMCR_FULLDPLX; | |
787 | else | |
788 | data |= BMCR_FULLDPLX; | |
bafef0ae JN |
789 | } |
790 | e100_set_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR, data); | |
1da177e4 LT |
791 | } |
792 | ||
793 | static void | |
794 | e100_set_speed(struct net_device* dev, unsigned long speed) | |
795 | { | |
bafef0ae JN |
796 | struct net_local *np = netdev_priv(dev); |
797 | ||
798 | spin_lock(&np->transceiver_lock); | |
1da177e4 LT |
799 | if (speed != current_speed_selection) { |
800 | current_speed_selection = speed; | |
801 | e100_negotiate(dev); | |
802 | } | |
bafef0ae | 803 | spin_unlock(&np->transceiver_lock); |
1da177e4 LT |
804 | } |
805 | ||
806 | static void | |
807 | e100_check_duplex(unsigned long priv) | |
808 | { | |
809 | struct net_device *dev = (struct net_device *)priv; | |
bafef0ae JN |
810 | struct net_local *np = netdev_priv(dev); |
811 | int old_duplex; | |
812 | ||
813 | spin_lock(&np->transceiver_lock); | |
814 | old_duplex = full_duplex; | |
1da177e4 LT |
815 | transceiver->check_duplex(dev); |
816 | if (old_duplex != full_duplex) { | |
817 | /* Duplex changed */ | |
818 | SETF(network_rec_config_shadow, R_NETWORK_REC_CONFIG, duplex, full_duplex); | |
819 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
820 | } | |
821 | ||
822 | /* Reinitialize the timer. */ | |
823 | duplex_timer.expires = jiffies + NET_DUPLEX_CHECK_INTERVAL; | |
824 | add_timer(&duplex_timer); | |
825 | np->mii_if.full_duplex = full_duplex; | |
bafef0ae | 826 | spin_unlock(&np->transceiver_lock); |
1da177e4 | 827 | } |
bafef0ae JN |
828 | #if defined(CONFIG_ETRAX_NO_PHY) |
829 | static void | |
830 | dummy_check_duplex(struct net_device* dev) | |
831 | { | |
832 | full_duplex = 1; | |
833 | } | |
834 | #else | |
1da177e4 LT |
835 | static void |
836 | generic_check_duplex(struct net_device* dev) | |
837 | { | |
838 | unsigned long data; | |
bafef0ae JN |
839 | struct net_local *np = netdev_priv(dev); |
840 | ||
841 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_ADVERTISE); | |
1da177e4 LT |
842 | if ((data & ADVERTISE_10FULL) || |
843 | (data & ADVERTISE_100FULL)) | |
844 | full_duplex = 1; | |
845 | else | |
846 | full_duplex = 0; | |
847 | } | |
848 | ||
849 | static void | |
850 | tdk_check_duplex(struct net_device* dev) | |
851 | { | |
852 | unsigned long data; | |
bafef0ae JN |
853 | struct net_local *np = netdev_priv(dev); |
854 | ||
855 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
856 | MDIO_TDK_DIAGNOSTIC_REG); | |
1da177e4 LT |
857 | full_duplex = (data & MDIO_TDK_DIAGNOSTIC_DPLX) ? 1 : 0; |
858 | } | |
859 | ||
860 | static void | |
861 | broadcom_check_duplex(struct net_device* dev) | |
862 | { | |
863 | unsigned long data; | |
bafef0ae JN |
864 | struct net_local *np = netdev_priv(dev); |
865 | ||
866 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
867 | MDIO_AUX_CTRL_STATUS_REG); | |
1da177e4 LT |
868 | full_duplex = (data & MDIO_BC_FULL_DUPLEX_IND) ? 1 : 0; |
869 | } | |
870 | ||
871 | static void | |
872 | intel_check_duplex(struct net_device* dev) | |
873 | { | |
874 | unsigned long data; | |
bafef0ae JN |
875 | struct net_local *np = netdev_priv(dev); |
876 | ||
877 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, | |
878 | MDIO_INT_STATUS_REG_2); | |
1da177e4 LT |
879 | full_duplex = (data & MDIO_INT_FULL_DUPLEX_IND) ? 1 : 0; |
880 | } | |
bafef0ae | 881 | #endif |
1da177e4 LT |
882 | static void |
883 | e100_set_duplex(struct net_device* dev, enum duplex new_duplex) | |
884 | { | |
bafef0ae JN |
885 | struct net_local *np = netdev_priv(dev); |
886 | ||
887 | spin_lock(&np->transceiver_lock); | |
1da177e4 LT |
888 | if (new_duplex != current_duplex) { |
889 | current_duplex = new_duplex; | |
890 | e100_negotiate(dev); | |
891 | } | |
bafef0ae | 892 | spin_unlock(&np->transceiver_lock); |
1da177e4 LT |
893 | } |
894 | ||
895 | static int | |
896 | e100_probe_transceiver(struct net_device* dev) | |
897 | { | |
633edf5a AM |
898 | int ret = 0; |
899 | ||
bafef0ae | 900 | #if !defined(CONFIG_ETRAX_NO_PHY) |
1da177e4 LT |
901 | unsigned int phyid_high; |
902 | unsigned int phyid_low; | |
903 | unsigned int oui; | |
904 | struct transceiver_ops* ops = NULL; | |
bafef0ae JN |
905 | struct net_local *np = netdev_priv(dev); |
906 | ||
907 | spin_lock(&np->transceiver_lock); | |
1da177e4 LT |
908 | |
909 | /* Probe MDIO physical address */ | |
bafef0ae JN |
910 | for (np->mii_if.phy_id = 0; np->mii_if.phy_id <= 31; |
911 | np->mii_if.phy_id++) { | |
912 | if (e100_get_mdio_reg(dev, | |
913 | np->mii_if.phy_id, MII_BMSR) != 0xffff) | |
1da177e4 LT |
914 | break; |
915 | } | |
633edf5a AM |
916 | if (np->mii_if.phy_id == 32) { |
917 | ret = -ENODEV; | |
918 | goto out; | |
919 | } | |
1da177e4 LT |
920 | |
921 | /* Get manufacturer */ | |
bafef0ae JN |
922 | phyid_high = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID1); |
923 | phyid_low = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_PHYSID2); | |
1da177e4 LT |
924 | oui = (phyid_high << 6) | (phyid_low >> 10); |
925 | ||
926 | for (ops = &transceivers[0]; ops->oui; ops++) { | |
927 | if (ops->oui == oui) | |
928 | break; | |
929 | } | |
930 | transceiver = ops; | |
633edf5a | 931 | out: |
bafef0ae JN |
932 | spin_unlock(&np->transceiver_lock); |
933 | #endif | |
633edf5a | 934 | return ret; |
1da177e4 LT |
935 | } |
936 | ||
937 | static int | |
938 | e100_get_mdio_reg(struct net_device *dev, int phy_id, int location) | |
939 | { | |
940 | unsigned short cmd; /* Data to be sent on MDIO port */ | |
941 | int data; /* Data read from MDIO */ | |
942 | int bitCounter; | |
943 | ||
944 | /* Start of frame, OP Code, Physical Address, Register Address */ | |
945 | cmd = (MDIO_START << 14) | (MDIO_READ << 12) | (phy_id << 7) | | |
946 | (location << 2); | |
947 | ||
948 | e100_send_mdio_cmd(cmd, 0); | |
949 | ||
950 | data = 0; | |
951 | ||
952 | /* Data... */ | |
953 | for (bitCounter=15; bitCounter>=0 ; bitCounter--) { | |
954 | data |= (e100_receive_mdio_bit() << bitCounter); | |
955 | } | |
956 | ||
957 | return data; | |
958 | } | |
959 | ||
960 | static void | |
961 | e100_set_mdio_reg(struct net_device *dev, int phy_id, int location, int value) | |
962 | { | |
963 | int bitCounter; | |
964 | unsigned short cmd; | |
965 | ||
966 | cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (phy_id << 7) | | |
967 | (location << 2); | |
968 | ||
969 | e100_send_mdio_cmd(cmd, 1); | |
970 | ||
971 | /* Data... */ | |
972 | for (bitCounter=15; bitCounter>=0 ; bitCounter--) { | |
973 | e100_send_mdio_bit(GET_BIT(bitCounter, value)); | |
974 | } | |
975 | ||
976 | } | |
977 | ||
978 | static void | |
979 | e100_send_mdio_cmd(unsigned short cmd, int write_cmd) | |
980 | { | |
981 | int bitCounter; | |
982 | unsigned char data = 0x2; | |
983 | ||
984 | /* Preamble */ | |
985 | for (bitCounter = 31; bitCounter>= 0; bitCounter--) | |
986 | e100_send_mdio_bit(GET_BIT(bitCounter, MDIO_PREAMBLE)); | |
987 | ||
988 | for (bitCounter = 15; bitCounter >= 2; bitCounter--) | |
989 | e100_send_mdio_bit(GET_BIT(bitCounter, cmd)); | |
990 | ||
991 | /* Turnaround */ | |
992 | for (bitCounter = 1; bitCounter >= 0 ; bitCounter--) | |
993 | if (write_cmd) | |
994 | e100_send_mdio_bit(GET_BIT(bitCounter, data)); | |
995 | else | |
996 | e100_receive_mdio_bit(); | |
997 | } | |
998 | ||
999 | static void | |
1000 | e100_send_mdio_bit(unsigned char bit) | |
1001 | { | |
1002 | *R_NETWORK_MGM_CTRL = | |
1003 | IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) | | |
1004 | IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit); | |
1005 | udelay(1); | |
1006 | *R_NETWORK_MGM_CTRL = | |
1007 | IO_STATE(R_NETWORK_MGM_CTRL, mdoe, enable) | | |
1008 | IO_MASK(R_NETWORK_MGM_CTRL, mdck) | | |
1009 | IO_FIELD(R_NETWORK_MGM_CTRL, mdio, bit); | |
1010 | udelay(1); | |
1011 | } | |
1012 | ||
1013 | static unsigned char | |
1014 | e100_receive_mdio_bit() | |
1015 | { | |
1016 | unsigned char bit; | |
1017 | *R_NETWORK_MGM_CTRL = 0; | |
1018 | bit = IO_EXTRACT(R_NETWORK_STAT, mdio, *R_NETWORK_STAT); | |
1019 | udelay(1); | |
1020 | *R_NETWORK_MGM_CTRL = IO_MASK(R_NETWORK_MGM_CTRL, mdck); | |
1021 | udelay(1); | |
1022 | return bit; | |
1023 | } | |
1024 | ||
1025 | static void | |
1026 | e100_reset_transceiver(struct net_device* dev) | |
1027 | { | |
bafef0ae | 1028 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1029 | unsigned short cmd; |
1030 | unsigned short data; | |
1031 | int bitCounter; | |
1032 | ||
bafef0ae | 1033 | data = e100_get_mdio_reg(dev, np->mii_if.phy_id, MII_BMCR); |
1da177e4 | 1034 | |
bafef0ae | 1035 | cmd = (MDIO_START << 14) | (MDIO_WRITE << 12) | (np->mii_if.phy_id << 7) | (MII_BMCR << 2); |
1da177e4 LT |
1036 | |
1037 | e100_send_mdio_cmd(cmd, 1); | |
1038 | ||
1039 | data |= 0x8000; | |
1040 | ||
1041 | for (bitCounter = 15; bitCounter >= 0 ; bitCounter--) { | |
1042 | e100_send_mdio_bit(GET_BIT(bitCounter, data)); | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | /* Called by upper layers if they decide it took too long to complete | |
1047 | * sending a packet - we need to reset and stuff. | |
1048 | */ | |
1049 | ||
1050 | static void | |
1051 | e100_tx_timeout(struct net_device *dev) | |
1052 | { | |
bafef0ae | 1053 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1054 | unsigned long flags; |
1055 | ||
1056 | spin_lock_irqsave(&np->lock, flags); | |
1057 | ||
1058 | printk(KERN_WARNING "%s: transmit timed out, %s?\n", dev->name, | |
1059 | tx_done(dev) ? "IRQ problem" : "network cable problem"); | |
1060 | ||
1061 | /* remember we got an error */ | |
1062 | ||
1063 | np->stats.tx_errors++; | |
1064 | ||
1065 | /* reset the TX DMA in case it has hung on something */ | |
1066 | ||
1067 | RESET_DMA(NETWORK_TX_DMA_NBR); | |
1068 | WAIT_DMA(NETWORK_TX_DMA_NBR); | |
1069 | ||
1070 | /* Reset the transceiver. */ | |
1071 | ||
1072 | e100_reset_transceiver(dev); | |
1073 | ||
1074 | /* and get rid of the packets that never got an interrupt */ | |
bafef0ae | 1075 | while (myFirstTxDesc != myNextTxDesc) { |
1da177e4 LT |
1076 | dev_kfree_skb(myFirstTxDesc->skb); |
1077 | myFirstTxDesc->skb = 0; | |
1078 | myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); | |
1079 | } | |
1080 | ||
1081 | /* Set up transmit DMA channel so it can be restarted later */ | |
1082 | *R_DMA_CH0_FIRST = 0; | |
1083 | *R_DMA_CH0_DESCR = virt_to_phys(myLastTxDesc); | |
1084 | ||
1085 | /* tell the upper layers we're ok again */ | |
1086 | ||
1087 | netif_wake_queue(dev); | |
1088 | spin_unlock_irqrestore(&np->lock, flags); | |
1089 | } | |
1090 | ||
1091 | ||
1092 | /* This will only be invoked if the driver is _not_ in XOFF state. | |
1093 | * What this means is that we need not check it, and that this | |
1094 | * invariant will hold if we make sure that the netif_*_queue() | |
1095 | * calls are done at the proper times. | |
1096 | */ | |
1097 | ||
1098 | static int | |
1099 | e100_send_packet(struct sk_buff *skb, struct net_device *dev) | |
1100 | { | |
bafef0ae | 1101 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1102 | unsigned char *buf = skb->data; |
1103 | unsigned long flags; | |
1104 | ||
1105 | #ifdef ETHDEBUG | |
1106 | printk("send packet len %d\n", length); | |
1107 | #endif | |
1108 | spin_lock_irqsave(&np->lock, flags); /* protect from tx_interrupt and ourself */ | |
1109 | ||
1110 | myNextTxDesc->skb = skb; | |
1111 | ||
1112 | dev->trans_start = jiffies; | |
1113 | ||
bafef0ae | 1114 | e100_hardware_send_packet(np, buf, skb->len); |
1da177e4 LT |
1115 | |
1116 | myNextTxDesc = phys_to_virt(myNextTxDesc->descr.next); | |
1117 | ||
1118 | /* Stop queue if full */ | |
1119 | if (myNextTxDesc == myFirstTxDesc) { | |
1120 | netif_stop_queue(dev); | |
1121 | } | |
1122 | ||
1123 | spin_unlock_irqrestore(&np->lock, flags); | |
1124 | ||
6ed10654 | 1125 | return NETDEV_TX_OK; |
1da177e4 LT |
1126 | } |
1127 | ||
1128 | /* | |
1129 | * The typical workload of the driver: | |
1130 | * Handle the network interface interrupts. | |
1131 | */ | |
1132 | ||
1133 | static irqreturn_t | |
7d12e780 | 1134 | e100rxtx_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1135 | { |
1136 | struct net_device *dev = (struct net_device *)dev_id; | |
bafef0ae JN |
1137 | struct net_local *np = netdev_priv(dev); |
1138 | unsigned long irqbits; | |
1da177e4 | 1139 | |
bafef0ae JN |
1140 | /* |
1141 | * Note that both rx and tx interrupts are blocked at this point, | |
1142 | * regardless of which got us here. | |
1143 | */ | |
1144 | ||
1145 | irqbits = *R_IRQ_MASK2_RD; | |
1da177e4 LT |
1146 | |
1147 | /* Handle received packets */ | |
1148 | if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma1_eop, active)) { | |
1149 | /* acknowledge the eop interrupt */ | |
1150 | ||
1151 | *R_DMA_CH1_CLR_INTR = IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do); | |
1152 | ||
1153 | /* check if one or more complete packets were indeed received */ | |
1154 | ||
1155 | while ((*R_DMA_CH1_FIRST != virt_to_phys(myNextRxDesc)) && | |
1156 | (myNextRxDesc != myLastRxDesc)) { | |
1157 | /* Take out the buffer and give it to the OS, then | |
1158 | * allocate a new buffer to put a packet in. | |
1159 | */ | |
1160 | e100_rx(dev); | |
bafef0ae | 1161 | np->stats.rx_packets++; |
1da177e4 LT |
1162 | /* restart/continue on the channel, for safety */ |
1163 | *R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart); | |
1164 | /* clear dma channel 1 eop/descr irq bits */ | |
1165 | *R_DMA_CH1_CLR_INTR = | |
1166 | IO_STATE(R_DMA_CH1_CLR_INTR, clr_eop, do) | | |
1167 | IO_STATE(R_DMA_CH1_CLR_INTR, clr_descr, do); | |
1168 | ||
1169 | /* now, we might have gotten another packet | |
1170 | so we have to loop back and check if so */ | |
1171 | } | |
1172 | } | |
1173 | ||
1174 | /* Report any packets that have been sent */ | |
bafef0ae JN |
1175 | while (virt_to_phys(myFirstTxDesc) != *R_DMA_CH0_FIRST && |
1176 | (netif_queue_stopped(dev) || myFirstTxDesc != myNextTxDesc)) { | |
1da177e4 LT |
1177 | np->stats.tx_bytes += myFirstTxDesc->skb->len; |
1178 | np->stats.tx_packets++; | |
1179 | ||
1180 | /* dma is ready with the transmission of the data in tx_skb, so now | |
1181 | we can release the skb memory */ | |
1182 | dev_kfree_skb_irq(myFirstTxDesc->skb); | |
1183 | myFirstTxDesc->skb = 0; | |
1184 | myFirstTxDesc = phys_to_virt(myFirstTxDesc->descr.next); | |
bafef0ae JN |
1185 | /* Wake up queue. */ |
1186 | netif_wake_queue(dev); | |
1da177e4 LT |
1187 | } |
1188 | ||
1189 | if (irqbits & IO_STATE(R_IRQ_MASK2_RD, dma0_eop, active)) { | |
bafef0ae | 1190 | /* acknowledge the eop interrupt. */ |
1da177e4 | 1191 | *R_DMA_CH0_CLR_INTR = IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop, do); |
1da177e4 LT |
1192 | } |
1193 | ||
1da177e4 LT |
1194 | return IRQ_HANDLED; |
1195 | } | |
1196 | ||
1197 | static irqreturn_t | |
7d12e780 | 1198 | e100nw_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1199 | { |
1200 | struct net_device *dev = (struct net_device *)dev_id; | |
bafef0ae | 1201 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1202 | unsigned long irqbits = *R_IRQ_MASK0_RD; |
1203 | ||
1204 | /* check for underrun irq */ | |
1205 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, underrun, active)) { | |
1206 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); | |
1207 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; | |
1208 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); | |
1209 | np->stats.tx_errors++; | |
1210 | D(printk("ethernet receiver underrun!\n")); | |
1211 | } | |
1212 | ||
1213 | /* check for overrun irq */ | |
1214 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, overrun, active)) { | |
1215 | update_rx_stats(&np->stats); /* this will ack the irq */ | |
1216 | D(printk("ethernet receiver overrun!\n")); | |
1217 | } | |
1218 | /* check for excessive collision irq */ | |
1219 | if (irqbits & IO_STATE(R_IRQ_MASK0_RD, excessive_col, active)) { | |
1220 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr); | |
1221 | *R_NETWORK_TR_CTRL = network_tr_ctrl_shadow; | |
1222 | SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop); | |
1da177e4 LT |
1223 | np->stats.tx_errors++; |
1224 | D(printk("ethernet excessive collisions!\n")); | |
1225 | } | |
1226 | return IRQ_HANDLED; | |
1227 | } | |
1228 | ||
1229 | /* We have a good packet(s), get it/them out of the buffers. */ | |
1230 | static void | |
1231 | e100_rx(struct net_device *dev) | |
1232 | { | |
1233 | struct sk_buff *skb; | |
1234 | int length = 0; | |
bafef0ae | 1235 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1236 | unsigned char *skb_data_ptr; |
1237 | #ifdef ETHDEBUG | |
1238 | int i; | |
1239 | #endif | |
bafef0ae JN |
1240 | etrax_eth_descr *prevRxDesc; /* The descriptor right before myNextRxDesc */ |
1241 | spin_lock(&np->led_lock); | |
1da177e4 LT |
1242 | if (!led_active && time_after(jiffies, led_next_time)) { |
1243 | /* light the network leds depending on the current speed. */ | |
1244 | e100_set_network_leds(NETWORK_ACTIVITY); | |
1245 | ||
1246 | /* Set the earliest time we may clear the LED */ | |
1247 | led_next_time = jiffies + NET_FLASH_TIME; | |
1248 | led_active = 1; | |
1249 | mod_timer(&clear_led_timer, jiffies + HZ/10); | |
1250 | } | |
bafef0ae | 1251 | spin_unlock(&np->led_lock); |
1da177e4 LT |
1252 | |
1253 | length = myNextRxDesc->descr.hw_len - 4; | |
bafef0ae | 1254 | np->stats.rx_bytes += length; |
1da177e4 LT |
1255 | |
1256 | #ifdef ETHDEBUG | |
1257 | printk("Got a packet of length %d:\n", length); | |
1258 | /* dump the first bytes in the packet */ | |
1259 | skb_data_ptr = (unsigned char *)phys_to_virt(myNextRxDesc->descr.buf); | |
1260 | for (i = 0; i < 8; i++) { | |
1261 | printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x\n", i * 8, | |
1262 | skb_data_ptr[0],skb_data_ptr[1],skb_data_ptr[2],skb_data_ptr[3], | |
1263 | skb_data_ptr[4],skb_data_ptr[5],skb_data_ptr[6],skb_data_ptr[7]); | |
1264 | skb_data_ptr += 8; | |
1265 | } | |
1266 | #endif | |
1267 | ||
1268 | if (length < RX_COPYBREAK) { | |
1269 | /* Small packet, copy data */ | |
1270 | skb = dev_alloc_skb(length - ETHER_HEAD_LEN); | |
1271 | if (!skb) { | |
1272 | np->stats.rx_errors++; | |
1273 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); | |
bafef0ae | 1274 | goto update_nextrxdesc; |
1da177e4 LT |
1275 | } |
1276 | ||
1277 | skb_put(skb, length - ETHER_HEAD_LEN); /* allocate room for the packet body */ | |
1278 | skb_data_ptr = skb_push(skb, ETHER_HEAD_LEN); /* allocate room for the header */ | |
1279 | ||
1280 | #ifdef ETHDEBUG | |
1281 | printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%x\n", | |
4305b541 ACM |
1282 | skb->head, skb->data, skb_tail_pointer(skb), |
1283 | skb_end_pointer(skb)); | |
1da177e4 LT |
1284 | printk("copying packet to 0x%x.\n", skb_data_ptr); |
1285 | #endif | |
1286 | ||
1287 | memcpy(skb_data_ptr, phys_to_virt(myNextRxDesc->descr.buf), length); | |
1288 | } | |
1289 | else { | |
1290 | /* Large packet, send directly to upper layers and allocate new | |
1291 | * memory (aligned to cache line boundary to avoid bug). | |
bafef0ae JN |
1292 | * Before sending the skb to upper layers we must make sure |
1293 | * that skb->data points to the aligned start of the packet. | |
1da177e4 LT |
1294 | */ |
1295 | int align; | |
1296 | struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES); | |
1297 | if (!new_skb) { | |
1298 | np->stats.rx_errors++; | |
1299 | printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name); | |
bafef0ae | 1300 | goto update_nextrxdesc; |
1da177e4 LT |
1301 | } |
1302 | skb = myNextRxDesc->skb; | |
1303 | align = (int)phys_to_virt(myNextRxDesc->descr.buf) - (int)skb->data; | |
1304 | skb_put(skb, length + align); | |
1305 | skb_pull(skb, align); /* Remove alignment bytes */ | |
1306 | myNextRxDesc->skb = new_skb; | |
1307 | myNextRxDesc->descr.buf = L1_CACHE_ALIGN(virt_to_phys(myNextRxDesc->skb->data)); | |
1308 | } | |
1309 | ||
1da177e4 LT |
1310 | skb->protocol = eth_type_trans(skb, dev); |
1311 | ||
1312 | /* Send the packet to the upper layers */ | |
1313 | netif_rx(skb); | |
1314 | ||
bafef0ae | 1315 | update_nextrxdesc: |
1da177e4 LT |
1316 | /* Prepare for next packet */ |
1317 | myNextRxDesc->descr.status = 0; | |
bafef0ae | 1318 | prevRxDesc = myNextRxDesc; |
1da177e4 LT |
1319 | myNextRxDesc = phys_to_virt(myNextRxDesc->descr.next); |
1320 | ||
1321 | rx_queue_len++; | |
1322 | ||
1323 | /* Check if descriptors should be returned */ | |
1324 | if (rx_queue_len == RX_QUEUE_THRESHOLD) { | |
1325 | flush_etrax_cache(); | |
bafef0ae | 1326 | prevRxDesc->descr.ctrl |= d_eol; |
1da177e4 | 1327 | myLastRxDesc->descr.ctrl &= ~d_eol; |
bafef0ae | 1328 | myLastRxDesc = prevRxDesc; |
1da177e4 LT |
1329 | rx_queue_len = 0; |
1330 | } | |
1331 | } | |
1332 | ||
1333 | /* The inverse routine to net_open(). */ | |
1334 | static int | |
1335 | e100_close(struct net_device *dev) | |
1336 | { | |
bafef0ae | 1337 | struct net_local *np = netdev_priv(dev); |
1da177e4 LT |
1338 | |
1339 | printk(KERN_INFO "Closing %s.\n", dev->name); | |
1340 | ||
1341 | netif_stop_queue(dev); | |
1342 | ||
1343 | *R_IRQ_MASK0_CLR = | |
1344 | IO_STATE(R_IRQ_MASK0_CLR, overrun, clr) | | |
1345 | IO_STATE(R_IRQ_MASK0_CLR, underrun, clr) | | |
1346 | IO_STATE(R_IRQ_MASK0_CLR, excessive_col, clr); | |
1347 | ||
1348 | *R_IRQ_MASK2_CLR = | |
1349 | IO_STATE(R_IRQ_MASK2_CLR, dma0_descr, clr) | | |
1350 | IO_STATE(R_IRQ_MASK2_CLR, dma0_eop, clr) | | |
1351 | IO_STATE(R_IRQ_MASK2_CLR, dma1_descr, clr) | | |
1352 | IO_STATE(R_IRQ_MASK2_CLR, dma1_eop, clr); | |
1353 | ||
1354 | /* Stop the receiver and the transmitter */ | |
1355 | ||
1356 | RESET_DMA(NETWORK_TX_DMA_NBR); | |
1357 | RESET_DMA(NETWORK_RX_DMA_NBR); | |
1358 | ||
1359 | /* Flush the Tx and disable Rx here. */ | |
1360 | ||
1361 | free_irq(NETWORK_DMA_RX_IRQ_NBR, (void *)dev); | |
1362 | free_irq(NETWORK_DMA_TX_IRQ_NBR, (void *)dev); | |
1363 | free_irq(NETWORK_STATUS_IRQ_NBR, (void *)dev); | |
1364 | ||
bafef0ae JN |
1365 | cris_free_dma(NETWORK_TX_DMA_NBR, cardname); |
1366 | cris_free_dma(NETWORK_RX_DMA_NBR, cardname); | |
1367 | ||
1da177e4 LT |
1368 | /* Update the statistics here. */ |
1369 | ||
1370 | update_rx_stats(&np->stats); | |
1371 | update_tx_stats(&np->stats); | |
1372 | ||
1373 | /* Stop speed/duplex timers */ | |
1374 | del_timer(&speed_timer); | |
1375 | del_timer(&duplex_timer); | |
1376 | ||
1377 | return 0; | |
1378 | } | |
1379 | ||
1380 | static int | |
1381 | e100_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
1382 | { | |
1383 | struct mii_ioctl_data *data = if_mii(ifr); | |
1384 | struct net_local *np = netdev_priv(dev); | |
bafef0ae JN |
1385 | int rc = 0; |
1386 | int old_autoneg; | |
1da177e4 LT |
1387 | |
1388 | spin_lock(&np->lock); /* Preempt protection */ | |
1389 | switch (cmd) { | |
1da177e4 LT |
1390 | /* The ioctls below should be considered obsolete but are */ |
1391 | /* still present for compatability with old scripts/apps */ | |
1392 | case SET_ETH_SPEED_10: /* 10 Mbps */ | |
1393 | e100_set_speed(dev, 10); | |
1394 | break; | |
1395 | case SET_ETH_SPEED_100: /* 100 Mbps */ | |
1396 | e100_set_speed(dev, 100); | |
1397 | break; | |
bafef0ae | 1398 | case SET_ETH_SPEED_AUTO: /* Auto-negotiate speed */ |
1da177e4 LT |
1399 | e100_set_speed(dev, 0); |
1400 | break; | |
bafef0ae | 1401 | case SET_ETH_DUPLEX_HALF: /* Half duplex */ |
1da177e4 LT |
1402 | e100_set_duplex(dev, half); |
1403 | break; | |
bafef0ae | 1404 | case SET_ETH_DUPLEX_FULL: /* Full duplex */ |
1da177e4 LT |
1405 | e100_set_duplex(dev, full); |
1406 | break; | |
bafef0ae | 1407 | case SET_ETH_DUPLEX_AUTO: /* Auto-negotiate duplex */ |
1da177e4 LT |
1408 | e100_set_duplex(dev, autoneg); |
1409 | break; | |
bafef0ae JN |
1410 | case SET_ETH_AUTONEG: |
1411 | old_autoneg = autoneg_normal; | |
1412 | autoneg_normal = *(int*)data; | |
1413 | if (autoneg_normal != old_autoneg) | |
1414 | e100_negotiate(dev); | |
1415 | break; | |
1da177e4 | 1416 | default: |
bafef0ae JN |
1417 | rc = generic_mii_ioctl(&np->mii_if, if_mii(ifr), |
1418 | cmd, NULL); | |
1419 | break; | |
1da177e4 LT |
1420 | } |
1421 | spin_unlock(&np->lock); | |
bafef0ae | 1422 | return rc; |
1da177e4 LT |
1423 | } |
1424 | ||
bafef0ae JN |
1425 | static int e100_get_settings(struct net_device *dev, |
1426 | struct ethtool_cmd *cmd) | |
1da177e4 | 1427 | { |
bafef0ae JN |
1428 | struct net_local *np = netdev_priv(dev); |
1429 | int err; | |
76f2b4d9 | 1430 | |
bafef0ae JN |
1431 | spin_lock_irq(&np->lock); |
1432 | err = mii_ethtool_gset(&np->mii_if, cmd); | |
1433 | spin_unlock_irq(&np->lock); | |
76f2b4d9 | 1434 | |
bafef0ae JN |
1435 | /* The PHY may support 1000baseT, but the Etrax100 does not. */ |
1436 | cmd->supported &= ~(SUPPORTED_1000baseT_Half | |
1437 | | SUPPORTED_1000baseT_Full); | |
1438 | return err; | |
76f2b4d9 CH |
1439 | } |
1440 | ||
1441 | static int e100_set_settings(struct net_device *dev, | |
1442 | struct ethtool_cmd *ecmd) | |
1443 | { | |
1444 | if (ecmd->autoneg == AUTONEG_ENABLE) { | |
1445 | e100_set_duplex(dev, autoneg); | |
1446 | e100_set_speed(dev, 0); | |
1447 | } else { | |
1448 | e100_set_duplex(dev, ecmd->duplex == DUPLEX_HALF ? half : full); | |
1449 | e100_set_speed(dev, ecmd->speed == SPEED_10 ? 10: 100); | |
1da177e4 | 1450 | } |
76f2b4d9 CH |
1451 | |
1452 | return 0; | |
1453 | } | |
1454 | ||
1455 | static void e100_get_drvinfo(struct net_device *dev, | |
1456 | struct ethtool_drvinfo *info) | |
1457 | { | |
1458 | strncpy(info->driver, "ETRAX 100LX", sizeof(info->driver) - 1); | |
1459 | strncpy(info->version, "$Revision: 1.31 $", sizeof(info->version) - 1); | |
1460 | strncpy(info->fw_version, "N/A", sizeof(info->fw_version) - 1); | |
1461 | strncpy(info->bus_info, "N/A", sizeof(info->bus_info) - 1); | |
1462 | } | |
1463 | ||
1464 | static int e100_nway_reset(struct net_device *dev) | |
1465 | { | |
1466 | if (current_duplex == autoneg && current_speed_selection == 0) | |
1467 | e100_negotiate(dev); | |
1da177e4 LT |
1468 | return 0; |
1469 | } | |
1470 | ||
7282d491 | 1471 | static const struct ethtool_ops e100_ethtool_ops = { |
76f2b4d9 CH |
1472 | .get_settings = e100_get_settings, |
1473 | .set_settings = e100_set_settings, | |
1474 | .get_drvinfo = e100_get_drvinfo, | |
1475 | .nway_reset = e100_nway_reset, | |
1476 | .get_link = ethtool_op_get_link, | |
1477 | }; | |
1478 | ||
1da177e4 LT |
1479 | static int |
1480 | e100_set_config(struct net_device *dev, struct ifmap *map) | |
1481 | { | |
bafef0ae JN |
1482 | struct net_local *np = netdev_priv(dev); |
1483 | ||
1da177e4 LT |
1484 | spin_lock(&np->lock); /* Preempt protection */ |
1485 | ||
1486 | switch(map->port) { | |
1487 | case IF_PORT_UNKNOWN: | |
1488 | /* Use autoneg */ | |
1489 | e100_set_speed(dev, 0); | |
1490 | e100_set_duplex(dev, autoneg); | |
1491 | break; | |
1492 | case IF_PORT_10BASET: | |
1493 | e100_set_speed(dev, 10); | |
1494 | e100_set_duplex(dev, autoneg); | |
1495 | break; | |
1496 | case IF_PORT_100BASET: | |
1497 | case IF_PORT_100BASETX: | |
1498 | e100_set_speed(dev, 100); | |
1499 | e100_set_duplex(dev, autoneg); | |
1500 | break; | |
1501 | case IF_PORT_100BASEFX: | |
1502 | case IF_PORT_10BASE2: | |
1503 | case IF_PORT_AUI: | |
1504 | spin_unlock(&np->lock); | |
1505 | return -EOPNOTSUPP; | |
1506 | break; | |
1507 | default: | |
1508 | printk(KERN_ERR "%s: Invalid media selected", dev->name); | |
1509 | spin_unlock(&np->lock); | |
1510 | return -EINVAL; | |
1511 | } | |
1512 | spin_unlock(&np->lock); | |
1513 | return 0; | |
1514 | } | |
1515 | ||
1516 | static void | |
1517 | update_rx_stats(struct net_device_stats *es) | |
1518 | { | |
1519 | unsigned long r = *R_REC_COUNTERS; | |
1520 | /* update stats relevant to reception errors */ | |
1521 | es->rx_fifo_errors += IO_EXTRACT(R_REC_COUNTERS, congestion, r); | |
1522 | es->rx_crc_errors += IO_EXTRACT(R_REC_COUNTERS, crc_error, r); | |
1523 | es->rx_frame_errors += IO_EXTRACT(R_REC_COUNTERS, alignment_error, r); | |
1524 | es->rx_length_errors += IO_EXTRACT(R_REC_COUNTERS, oversize, r); | |
1525 | } | |
1526 | ||
1527 | static void | |
1528 | update_tx_stats(struct net_device_stats *es) | |
1529 | { | |
1530 | unsigned long r = *R_TR_COUNTERS; | |
1531 | /* update stats relevant to transmission errors */ | |
1532 | es->collisions += | |
1533 | IO_EXTRACT(R_TR_COUNTERS, single_col, r) + | |
1534 | IO_EXTRACT(R_TR_COUNTERS, multiple_col, r); | |
1da177e4 LT |
1535 | } |
1536 | ||
1537 | /* | |
1538 | * Get the current statistics. | |
1539 | * This may be called with the card open or closed. | |
1540 | */ | |
1541 | static struct net_device_stats * | |
1542 | e100_get_stats(struct net_device *dev) | |
1543 | { | |
bafef0ae | 1544 | struct net_local *lp = netdev_priv(dev); |
1da177e4 | 1545 | unsigned long flags; |
bafef0ae | 1546 | |
1da177e4 LT |
1547 | spin_lock_irqsave(&lp->lock, flags); |
1548 | ||
1549 | update_rx_stats(&lp->stats); | |
1550 | update_tx_stats(&lp->stats); | |
1551 | ||
1552 | spin_unlock_irqrestore(&lp->lock, flags); | |
1553 | return &lp->stats; | |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | * Set or clear the multicast filter for this adaptor. | |
1558 | * num_addrs == -1 Promiscuous mode, receive all packets | |
1559 | * num_addrs == 0 Normal mode, clear multicast list | |
1560 | * num_addrs > 0 Multicast mode, receive normal and MC packets, | |
1561 | * and do best-effort filtering. | |
1562 | */ | |
1563 | static void | |
1564 | set_multicast_list(struct net_device *dev) | |
1565 | { | |
bafef0ae | 1566 | struct net_local *lp = netdev_priv(dev); |
1da177e4 LT |
1567 | int num_addr = dev->mc_count; |
1568 | unsigned long int lo_bits; | |
1569 | unsigned long int hi_bits; | |
bafef0ae | 1570 | |
1da177e4 | 1571 | spin_lock(&lp->lock); |
bafef0ae | 1572 | if (dev->flags & IFF_PROMISC) { |
1da177e4 LT |
1573 | /* promiscuous mode */ |
1574 | lo_bits = 0xfffffffful; | |
1575 | hi_bits = 0xfffffffful; | |
1576 | ||
1577 | /* Enable individual receive */ | |
1578 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, receive); | |
1579 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1580 | } else if (dev->flags & IFF_ALLMULTI) { | |
1581 | /* enable all multicasts */ | |
1582 | lo_bits = 0xfffffffful; | |
1583 | hi_bits = 0xfffffffful; | |
1584 | ||
1585 | /* Disable individual receive */ | |
1586 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); | |
1587 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1588 | } else if (num_addr == 0) { | |
1589 | /* Normal, clear the mc list */ | |
1590 | lo_bits = 0x00000000ul; | |
1591 | hi_bits = 0x00000000ul; | |
1592 | ||
1593 | /* Disable individual receive */ | |
1594 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); | |
1595 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1596 | } else { | |
1597 | /* MC mode, receive normal and MC packets */ | |
1598 | char hash_ix; | |
1599 | struct dev_mc_list *dmi = dev->mc_list; | |
1600 | int i; | |
1601 | char *baddr; | |
bafef0ae | 1602 | |
1da177e4 LT |
1603 | lo_bits = 0x00000000ul; |
1604 | hi_bits = 0x00000000ul; | |
bafef0ae | 1605 | for (i = 0; i < num_addr; i++) { |
1da177e4 LT |
1606 | /* Calculate the hash index for the GA registers */ |
1607 | ||
1608 | hash_ix = 0; | |
1609 | baddr = dmi->dmi_addr; | |
1610 | hash_ix ^= (*baddr) & 0x3f; | |
1611 | hash_ix ^= ((*baddr) >> 6) & 0x03; | |
1612 | ++baddr; | |
1613 | hash_ix ^= ((*baddr) << 2) & 0x03c; | |
1614 | hash_ix ^= ((*baddr) >> 4) & 0xf; | |
1615 | ++baddr; | |
1616 | hash_ix ^= ((*baddr) << 4) & 0x30; | |
1617 | hash_ix ^= ((*baddr) >> 2) & 0x3f; | |
1618 | ++baddr; | |
1619 | hash_ix ^= (*baddr) & 0x3f; | |
1620 | hash_ix ^= ((*baddr) >> 6) & 0x03; | |
1621 | ++baddr; | |
1622 | hash_ix ^= ((*baddr) << 2) & 0x03c; | |
1623 | hash_ix ^= ((*baddr) >> 4) & 0xf; | |
1624 | ++baddr; | |
1625 | hash_ix ^= ((*baddr) << 4) & 0x30; | |
1626 | hash_ix ^= ((*baddr) >> 2) & 0x3f; | |
1627 | ||
1628 | hash_ix &= 0x3f; | |
1629 | ||
1630 | if (hash_ix >= 32) { | |
1631 | hi_bits |= (1 << (hash_ix-32)); | |
bafef0ae | 1632 | } else { |
1da177e4 LT |
1633 | lo_bits |= (1 << hash_ix); |
1634 | } | |
1635 | dmi = dmi->next; | |
1636 | } | |
1637 | /* Disable individual receive */ | |
1638 | SETS(network_rec_config_shadow, R_NETWORK_REC_CONFIG, individual, discard); | |
1639 | *R_NETWORK_REC_CONFIG = network_rec_config_shadow; | |
1640 | } | |
1641 | *R_NETWORK_GA_0 = lo_bits; | |
1642 | *R_NETWORK_GA_1 = hi_bits; | |
1643 | spin_unlock(&lp->lock); | |
1644 | } | |
1645 | ||
1646 | void | |
bafef0ae | 1647 | e100_hardware_send_packet(struct net_local *np, char *buf, int length) |
1da177e4 LT |
1648 | { |
1649 | D(printk("e100 send pack, buf 0x%x len %d\n", buf, length)); | |
1650 | ||
bafef0ae | 1651 | spin_lock(&np->led_lock); |
1da177e4 LT |
1652 | if (!led_active && time_after(jiffies, led_next_time)) { |
1653 | /* light the network leds depending on the current speed. */ | |
1654 | e100_set_network_leds(NETWORK_ACTIVITY); | |
1655 | ||
1656 | /* Set the earliest time we may clear the LED */ | |
1657 | led_next_time = jiffies + NET_FLASH_TIME; | |
1658 | led_active = 1; | |
1659 | mod_timer(&clear_led_timer, jiffies + HZ/10); | |
1660 | } | |
bafef0ae | 1661 | spin_unlock(&np->led_lock); |
1da177e4 LT |
1662 | |
1663 | /* configure the tx dma descriptor */ | |
1664 | myNextTxDesc->descr.sw_len = length; | |
1665 | myNextTxDesc->descr.ctrl = d_eop | d_eol | d_wait; | |
1666 | myNextTxDesc->descr.buf = virt_to_phys(buf); | |
1667 | ||
1668 | /* Move end of list */ | |
1669 | myLastTxDesc->descr.ctrl &= ~d_eol; | |
1670 | myLastTxDesc = myNextTxDesc; | |
1671 | ||
1672 | /* Restart DMA channel */ | |
1673 | *R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, restart); | |
1674 | } | |
1675 | ||
1676 | static void | |
1677 | e100_clear_network_leds(unsigned long dummy) | |
1678 | { | |
bafef0ae JN |
1679 | struct net_device *dev = (struct net_device *)dummy; |
1680 | struct net_local *np = netdev_priv(dev); | |
1681 | ||
1682 | spin_lock(&np->led_lock); | |
1683 | ||
1da177e4 LT |
1684 | if (led_active && time_after(jiffies, led_next_time)) { |
1685 | e100_set_network_leds(NO_NETWORK_ACTIVITY); | |
1686 | ||
1687 | /* Set the earliest time we may set the LED */ | |
1688 | led_next_time = jiffies + NET_FLASH_PAUSE; | |
1689 | led_active = 0; | |
1690 | } | |
bafef0ae JN |
1691 | |
1692 | spin_unlock(&np->led_lock); | |
1da177e4 LT |
1693 | } |
1694 | ||
1695 | static void | |
1696 | e100_set_network_leds(int active) | |
1697 | { | |
1698 | #if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK) | |
1699 | int light_leds = (active == NO_NETWORK_ACTIVITY); | |
1700 | #elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY) | |
1701 | int light_leds = (active == NETWORK_ACTIVITY); | |
1702 | #else | |
1703 | #error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY" | |
1704 | #endif | |
1705 | ||
1706 | if (!current_speed) { | |
1707 | /* Make LED red, link is down */ | |
1708 | #if defined(CONFIG_ETRAX_NETWORK_RED_ON_NO_CONNECTION) | |
5efa1d1c | 1709 | CRIS_LED_NETWORK_SET(CRIS_LED_RED); |
1da177e4 | 1710 | #else |
5efa1d1c | 1711 | CRIS_LED_NETWORK_SET(CRIS_LED_OFF); |
1da177e4 | 1712 | #endif |
bafef0ae | 1713 | } else if (light_leds) { |
1da177e4 | 1714 | if (current_speed == 10) { |
5efa1d1c | 1715 | CRIS_LED_NETWORK_SET(CRIS_LED_ORANGE); |
1da177e4 | 1716 | } else { |
5efa1d1c | 1717 | CRIS_LED_NETWORK_SET(CRIS_LED_GREEN); |
1da177e4 | 1718 | } |
bafef0ae | 1719 | } else { |
5efa1d1c | 1720 | CRIS_LED_NETWORK_SET(CRIS_LED_OFF); |
1da177e4 LT |
1721 | } |
1722 | } | |
1723 | ||
bafef0ae JN |
1724 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1725 | static void | |
1726 | e100_netpoll(struct net_device* netdev) | |
1727 | { | |
1728 | e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR, netdev, NULL); | |
1729 | } | |
1730 | #endif | |
1731 | ||
1da177e4 LT |
1732 | static int |
1733 | etrax_init_module(void) | |
1734 | { | |
1735 | return etrax_ethernet_init(); | |
1736 | } | |
1737 | ||
1738 | static int __init | |
1739 | e100_boot_setup(char* str) | |
1740 | { | |
1741 | struct sockaddr sa = {0}; | |
1742 | int i; | |
1743 | ||
1744 | /* Parse the colon separated Ethernet station address */ | |
1745 | for (i = 0; i < ETH_ALEN; i++) { | |
1746 | unsigned int tmp; | |
1747 | if (sscanf(str + 3*i, "%2x", &tmp) != 1) { | |
1748 | printk(KERN_WARNING "Malformed station address"); | |
1749 | return 0; | |
1750 | } | |
1751 | sa.sa_data[i] = (char)tmp; | |
1752 | } | |
1753 | ||
1754 | default_mac = sa; | |
1755 | return 1; | |
1756 | } | |
1757 | ||
1758 | __setup("etrax100_eth=", e100_boot_setup); | |
1759 | ||
1760 | module_init(etrax_init_module); |