1 // SPDX-License-Identifier: GPL-2.0
3 * e100net.c: A network driver for the ETRAX 100LX network controller.
5 * Copyright (c) 1998-2002 Axis Communications AB.
7 * The outline of this driver comes from skeleton.c.
11 #include <linux/kernel.h>
12 #include <linux/delay.h>
13 #include <linux/types.h>
14 #include <linux/fcntl.h>
15 #include <linux/interrupt.h>
16 #include <linux/ptrace.h>
17 #include <linux/ioport.h>
19 #include <linux/string.h>
20 #include <linux/spinlock.h>
21 #include <linux/errno.h>
22 #include <linux/init.h>
23 #include <linux/bitops.h>
26 #include <linux/mii.h>
27 #include <linux/netdevice.h>
28 #include <linux/etherdevice.h>
29 #include <linux/skbuff.h>
30 #include <linux/ethtool.h>
32 #include <arch/svinto.h>/* DMA and register descriptions */
33 #include <asm/io.h> /* CRIS_LED_* I/O functions */
36 #include <asm/ethernet.h>
37 #include <asm/cache.h>
38 #include <arch/io_interface_mux.h>
44 * The name of the card. Is used for messages and in the requests for
45 * io regions, irqs and dma channels
48 static const char* cardname
= "ETRAX 100LX built-in ethernet controller";
50 /* A default ethernet address. Highlevel SW will set the real one later */
52 static struct sockaddr default_mac
= {
54 { 0x00, 0x40, 0x8C, 0xCD, 0x00, 0x00 }
57 /* Information that need to be kept for each board. */
59 struct mii_if_info mii_if
;
61 /* Tx control lock. This protects the transmit buffer ring
62 * state along with the "tx full" state of the driver. This
63 * means all netif_queue flow control actions are protected
64 * by this lock as well.
68 spinlock_t led_lock
; /* Protect LED state */
69 spinlock_t transceiver_lock
; /* Protect transceiver state. */
72 typedef struct etrax_eth_descr
74 etrax_dma_descr descr
;
78 /* Some transceivers requires special handling */
79 struct transceiver_ops
82 void (*check_speed
)(struct net_device
* dev
);
83 void (*check_duplex
)(struct net_device
* dev
);
94 /* Dma descriptors etc. */
96 #define MAX_MEDIA_DATA_SIZE 1522
98 #define MIN_PACKET_LEN 46
99 #define ETHER_HEAD_LEN 14
104 #define MDIO_START 0x1
105 #define MDIO_READ 0x2
106 #define MDIO_WRITE 0x1
107 #define MDIO_PREAMBLE 0xfffffffful
109 /* Broadcom specific */
110 #define MDIO_AUX_CTRL_STATUS_REG 0x18
111 #define MDIO_BC_FULL_DUPLEX_IND 0x1
112 #define MDIO_BC_SPEED 0x2
115 #define MDIO_TDK_DIAGNOSTIC_REG 18
116 #define MDIO_TDK_DIAGNOSTIC_RATE 0x400
117 #define MDIO_TDK_DIAGNOSTIC_DPLX 0x800
119 /*Intel LXT972A specific*/
120 #define MDIO_INT_STATUS_REG_2 0x0011
121 #define MDIO_INT_FULL_DUPLEX_IND (1 << 9)
122 #define MDIO_INT_SPEED (1 << 14)
124 /* Network flash constants */
125 #define NET_FLASH_TIME (HZ/50) /* 20 ms */
126 #define NET_FLASH_PAUSE (HZ/100) /* 10 ms */
127 #define NET_LINK_UP_CHECK_INTERVAL (2*HZ) /* 2 s */
128 #define NET_DUPLEX_CHECK_INTERVAL (2*HZ) /* 2 s */
130 #define NO_NETWORK_ACTIVITY 0
131 #define NETWORK_ACTIVITY 1
133 #define NBR_OF_RX_DESC 32
134 #define NBR_OF_TX_DESC 16
136 /* Large packets are sent directly to upper layers while small packets are */
137 /* copied (to reduce memory waste). The following constant decides the breakpoint */
138 #define RX_COPYBREAK 256
140 /* Due to a chip bug we need to flush the cache when descriptors are returned */
141 /* to the DMA. To decrease performance impact we return descriptors in chunks. */
142 /* The following constant determines the number of descriptors to return. */
143 #define RX_QUEUE_THRESHOLD NBR_OF_RX_DESC/2
145 #define GET_BIT(bit,val) (((val) >> (bit)) & 0x01)
147 /* Define some macros to access ETRAX 100 registers */
148 #define SETF(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \
149 IO_FIELD_(reg##_, field##_, val)
150 #define SETS(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \
151 IO_STATE_(reg##_, field##_, _##val)
153 static etrax_eth_descr
*myNextRxDesc
; /* Points to the next descriptor to
155 static etrax_eth_descr
*myLastRxDesc
; /* The last processed descriptor */
157 static etrax_eth_descr RxDescList
[NBR_OF_RX_DESC
] __attribute__ ((aligned(32)));
159 static etrax_eth_descr
* myFirstTxDesc
; /* First packet not yet sent */
160 static etrax_eth_descr
* myLastTxDesc
; /* End of send queue */
161 static etrax_eth_descr
* myNextTxDesc
; /* Next descriptor to use */
162 static etrax_eth_descr TxDescList
[NBR_OF_TX_DESC
] __attribute__ ((aligned(32)));
164 static unsigned int network_rec_config_shadow
= 0;
166 static unsigned int network_tr_ctrl_shadow
= 0;
168 /* Network speed indication. */
169 static DEFINE_TIMER(speed_timer
, NULL
);
170 static DEFINE_TIMER(clear_led_timer
, NULL
);
171 static int current_speed
; /* Speed read from transceiver */
172 static int current_speed_selection
; /* Speed selected by user */
173 static unsigned long led_next_time
;
174 static int led_active
;
175 static int rx_queue_len
;
178 static DEFINE_TIMER(duplex_timer
, NULL
);
179 static int full_duplex
;
180 static enum duplex current_duplex
;
182 /* Index to functions, as function prototypes. */
184 static int etrax_ethernet_init(void);
186 static int e100_open(struct net_device
*dev
);
187 static int e100_set_mac_address(struct net_device
*dev
, void *addr
);
188 static int e100_send_packet(struct sk_buff
*skb
, struct net_device
*dev
);
189 static irqreturn_t
e100rxtx_interrupt(int irq
, void *dev_id
);
190 static irqreturn_t
e100nw_interrupt(int irq
, void *dev_id
);
191 static void e100_rx(struct net_device
*dev
);
192 static int e100_close(struct net_device
*dev
);
193 static int e100_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
);
194 static int e100_set_config(struct net_device
* dev
, struct ifmap
* map
);
195 static void e100_tx_timeout(struct net_device
*dev
);
196 static struct net_device_stats
*e100_get_stats(struct net_device
*dev
);
197 static void set_multicast_list(struct net_device
*dev
);
198 static void e100_hardware_send_packet(struct net_local
* np
, char *buf
, int length
);
199 static void update_rx_stats(struct net_device_stats
*);
200 static void update_tx_stats(struct net_device_stats
*);
201 static int e100_probe_transceiver(struct net_device
* dev
);
203 static void e100_check_speed(unsigned long priv
);
204 static void e100_set_speed(struct net_device
* dev
, unsigned long speed
);
205 static void e100_check_duplex(unsigned long priv
);
206 static void e100_set_duplex(struct net_device
* dev
, enum duplex
);
207 static void e100_negotiate(struct net_device
* dev
);
209 static int e100_get_mdio_reg(struct net_device
*dev
, int phy_id
, int location
);
210 static void e100_set_mdio_reg(struct net_device
*dev
, int phy_id
, int location
, int value
);
212 static void e100_send_mdio_cmd(unsigned short cmd
, int write_cmd
);
213 static void e100_send_mdio_bit(unsigned char bit
);
214 static unsigned char e100_receive_mdio_bit(void);
215 static void e100_reset_transceiver(struct net_device
* net
);
217 static void e100_clear_network_leds(unsigned long dummy
);
218 static void e100_set_network_leds(int active
);
220 static const struct ethtool_ops e100_ethtool_ops
;
221 #if defined(CONFIG_ETRAX_NO_PHY)
222 static void dummy_check_speed(struct net_device
* dev
);
223 static void dummy_check_duplex(struct net_device
* dev
);
225 static void broadcom_check_speed(struct net_device
* dev
);
226 static void broadcom_check_duplex(struct net_device
* dev
);
227 static void tdk_check_speed(struct net_device
* dev
);
228 static void tdk_check_duplex(struct net_device
* dev
);
229 static void intel_check_speed(struct net_device
* dev
);
230 static void intel_check_duplex(struct net_device
* dev
);
231 static void generic_check_speed(struct net_device
* dev
);
232 static void generic_check_duplex(struct net_device
* dev
);
234 #ifdef CONFIG_NET_POLL_CONTROLLER
235 static void e100_netpoll(struct net_device
* dev
);
238 static int autoneg_normal
= 1;
240 struct transceiver_ops transceivers
[] =
242 #if defined(CONFIG_ETRAX_NO_PHY)
243 {0x0000, dummy_check_speed
, dummy_check_duplex
} /* Dummy */
245 {0x1018, broadcom_check_speed
, broadcom_check_duplex
}, /* Broadcom */
246 {0xC039, tdk_check_speed
, tdk_check_duplex
}, /* TDK 2120 */
247 {0x039C, tdk_check_speed
, tdk_check_duplex
}, /* TDK 2120C */
248 {0x04de, intel_check_speed
, intel_check_duplex
}, /* Intel LXT972A*/
249 {0x0000, generic_check_speed
, generic_check_duplex
} /* Generic, must be last */
253 struct transceiver_ops
* transceiver
= &transceivers
[0];
255 static const struct net_device_ops e100_netdev_ops
= {
256 .ndo_open
= e100_open
,
257 .ndo_stop
= e100_close
,
258 .ndo_start_xmit
= e100_send_packet
,
259 .ndo_tx_timeout
= e100_tx_timeout
,
260 .ndo_get_stats
= e100_get_stats
,
261 .ndo_set_rx_mode
= set_multicast_list
,
262 .ndo_do_ioctl
= e100_ioctl
,
263 .ndo_set_mac_address
= e100_set_mac_address
,
264 .ndo_validate_addr
= eth_validate_addr
,
265 .ndo_set_config
= e100_set_config
,
266 #ifdef CONFIG_NET_POLL_CONTROLLER
267 .ndo_poll_controller
= e100_netpoll
,
271 #define tx_done(dev) (*R_DMA_CH0_CMD == 0)
274 * Check for a network adaptor of this type, and return '0' if one exists.
275 * If dev->base_addr == 0, probe all likely locations.
276 * If dev->base_addr == 1, always return failure.
277 * If dev->base_addr == 2, allocate space for the device and return success
278 * (detachable devices only).
282 etrax_ethernet_init(void)
284 struct net_device
*dev
;
285 struct net_local
* np
;
289 "ETRAX 100LX 10/100MBit ethernet v2.0 (c) 1998-2007 Axis Communications AB\n");
291 if (cris_request_io_interface(if_eth
, cardname
)) {
292 printk(KERN_CRIT
"etrax_ethernet_init failed to get IO interface\n");
296 dev
= alloc_etherdev(sizeof(struct net_local
));
300 np
= netdev_priv(dev
);
302 /* we do our own locking */
303 dev
->features
|= NETIF_F_LLTX
;
305 dev
->base_addr
= (unsigned int)R_NETWORK_SA_0
; /* just to have something to show */
307 /* now setup our etrax specific stuff */
309 dev
->irq
= NETWORK_DMA_RX_IRQ_NBR
; /* we really use DMATX as well... */
310 dev
->dma
= NETWORK_RX_DMA_NBR
;
312 /* fill in our handlers so the network layer can talk to us in the future */
314 dev
->ethtool_ops
= &e100_ethtool_ops
;
315 dev
->netdev_ops
= &e100_netdev_ops
;
317 spin_lock_init(&np
->lock
);
318 spin_lock_init(&np
->led_lock
);
319 spin_lock_init(&np
->transceiver_lock
);
321 /* Initialise the list of Etrax DMA-descriptors */
323 /* Initialise receive descriptors */
325 for (i
= 0; i
< NBR_OF_RX_DESC
; i
++) {
326 /* Allocate two extra cachelines to make sure that buffer used
327 * by DMA does not share cacheline with any other data (to
330 RxDescList
[i
].skb
= dev_alloc_skb(MAX_MEDIA_DATA_SIZE
+ 2 * L1_CACHE_BYTES
);
331 if (!RxDescList
[i
].skb
)
333 RxDescList
[i
].descr
.ctrl
= 0;
334 RxDescList
[i
].descr
.sw_len
= MAX_MEDIA_DATA_SIZE
;
335 RxDescList
[i
].descr
.next
= virt_to_phys(&RxDescList
[i
+ 1]);
336 RxDescList
[i
].descr
.buf
= L1_CACHE_ALIGN(virt_to_phys(RxDescList
[i
].skb
->data
));
337 RxDescList
[i
].descr
.status
= 0;
338 RxDescList
[i
].descr
.hw_len
= 0;
339 prepare_rx_descriptor(&RxDescList
[i
].descr
);
342 RxDescList
[NBR_OF_RX_DESC
- 1].descr
.ctrl
= d_eol
;
343 RxDescList
[NBR_OF_RX_DESC
- 1].descr
.next
= virt_to_phys(&RxDescList
[0]);
346 /* Initialize transmit descriptors */
347 for (i
= 0; i
< NBR_OF_TX_DESC
; i
++) {
348 TxDescList
[i
].descr
.ctrl
= 0;
349 TxDescList
[i
].descr
.sw_len
= 0;
350 TxDescList
[i
].descr
.next
= virt_to_phys(&TxDescList
[i
+ 1].descr
);
351 TxDescList
[i
].descr
.buf
= 0;
352 TxDescList
[i
].descr
.status
= 0;
353 TxDescList
[i
].descr
.hw_len
= 0;
354 TxDescList
[i
].skb
= 0;
357 TxDescList
[NBR_OF_TX_DESC
- 1].descr
.ctrl
= d_eol
;
358 TxDescList
[NBR_OF_TX_DESC
- 1].descr
.next
= virt_to_phys(&TxDescList
[0].descr
);
360 /* Initialise initial pointers */
362 myNextRxDesc
= &RxDescList
[0];
363 myLastRxDesc
= &RxDescList
[NBR_OF_RX_DESC
- 1];
364 myFirstTxDesc
= &TxDescList
[0];
365 myNextTxDesc
= &TxDescList
[0];
366 myLastTxDesc
= &TxDescList
[NBR_OF_TX_DESC
- 1];
368 /* Register device */
369 err
= register_netdev(dev
);
375 /* set the default MAC address */
377 e100_set_mac_address(dev
, &default_mac
);
379 /* Initialize speed indicator stuff. */
382 current_speed_selection
= 0; /* Auto */
383 speed_timer
.expires
= jiffies
+ NET_LINK_UP_CHECK_INTERVAL
;
384 speed_timer
.data
= (unsigned long)dev
;
385 speed_timer
.function
= e100_check_speed
;
387 clear_led_timer
.function
= e100_clear_network_leds
;
388 clear_led_timer
.data
= (unsigned long)dev
;
391 current_duplex
= autoneg
;
392 duplex_timer
.expires
= jiffies
+ NET_DUPLEX_CHECK_INTERVAL
;
393 duplex_timer
.data
= (unsigned long)dev
;
394 duplex_timer
.function
= e100_check_duplex
;
396 /* Initialize mii interface */
397 np
->mii_if
.phy_id_mask
= 0x1f;
398 np
->mii_if
.reg_num_mask
= 0x1f;
399 np
->mii_if
.dev
= dev
;
400 np
->mii_if
.mdio_read
= e100_get_mdio_reg
;
401 np
->mii_if
.mdio_write
= e100_set_mdio_reg
;
403 /* Initialize group address registers to make sure that no */
404 /* unwanted addresses are matched */
405 *R_NETWORK_GA_0
= 0x00000000;
406 *R_NETWORK_GA_1
= 0x00000000;
408 /* Initialize next time the led can flash */
409 led_next_time
= jiffies
;
412 device_initcall(etrax_ethernet_init
)
414 /* set MAC address of the interface. called from the core after a
415 * SIOCSIFADDR ioctl, and from the bootup above.
419 e100_set_mac_address(struct net_device
*dev
, void *p
)
421 struct net_local
*np
= netdev_priv(dev
);
422 struct sockaddr
*addr
= p
;
424 spin_lock(&np
->lock
); /* preemption protection */
428 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
430 /* Write it to the hardware.
431 * Note the way the address is wrapped:
432 * *R_NETWORK_SA_0 = a0_0 | (a0_1 << 8) | (a0_2 << 16) | (a0_3 << 24);
433 * *R_NETWORK_SA_1 = a0_4 | (a0_5 << 8);
436 *R_NETWORK_SA_0
= dev
->dev_addr
[0] | (dev
->dev_addr
[1] << 8) |
437 (dev
->dev_addr
[2] << 16) | (dev
->dev_addr
[3] << 24);
438 *R_NETWORK_SA_1
= dev
->dev_addr
[4] | (dev
->dev_addr
[5] << 8);
441 /* show it in the log as well */
443 printk(KERN_INFO
"%s: changed MAC to %pM\n", dev
->name
, dev
->dev_addr
);
445 spin_unlock(&np
->lock
);
451 * Open/initialize the board. This is called (in the current kernel)
452 * sometime after booting when the 'ifconfig' program is run.
454 * This routine should set everything up anew at each open, even
455 * registers that "should" only need to be set once at boot, so that
456 * there is non-reboot way to recover if something goes wrong.
460 e100_open(struct net_device
*dev
)
464 /* enable the MDIO output pin */
466 *R_NETWORK_MGM_CTRL
= IO_STATE(R_NETWORK_MGM_CTRL
, mdoe
, enable
);
469 IO_STATE(R_IRQ_MASK0_CLR
, overrun
, clr
) |
470 IO_STATE(R_IRQ_MASK0_CLR
, underrun
, clr
) |
471 IO_STATE(R_IRQ_MASK0_CLR
, excessive_col
, clr
);
473 /* clear dma0 and 1 eop and descr irq masks */
475 IO_STATE(R_IRQ_MASK2_CLR
, dma0_descr
, clr
) |
476 IO_STATE(R_IRQ_MASK2_CLR
, dma0_eop
, clr
) |
477 IO_STATE(R_IRQ_MASK2_CLR
, dma1_descr
, clr
) |
478 IO_STATE(R_IRQ_MASK2_CLR
, dma1_eop
, clr
);
480 /* Reset and wait for the DMA channels */
482 RESET_DMA(NETWORK_TX_DMA_NBR
);
483 RESET_DMA(NETWORK_RX_DMA_NBR
);
484 WAIT_DMA(NETWORK_TX_DMA_NBR
);
485 WAIT_DMA(NETWORK_RX_DMA_NBR
);
487 /* Initialise the etrax network controller */
489 /* allocate the irq corresponding to the receiving DMA */
491 if (request_irq(NETWORK_DMA_RX_IRQ_NBR
, e100rxtx_interrupt
, 0, cardname
,
496 /* allocate the irq corresponding to the transmitting DMA */
498 if (request_irq(NETWORK_DMA_TX_IRQ_NBR
, e100rxtx_interrupt
, 0,
499 cardname
, (void *)dev
)) {
503 /* allocate the irq corresponding to the network errors etc */
505 if (request_irq(NETWORK_STATUS_IRQ_NBR
, e100nw_interrupt
, 0,
506 cardname
, (void *)dev
)) {
511 * Always allocate the DMA channels after the IRQ,
512 * and clean up on failure.
515 if (cris_request_dma(NETWORK_TX_DMA_NBR
,
517 DMA_VERBOSE_ON_ERROR
,
522 if (cris_request_dma(NETWORK_RX_DMA_NBR
,
524 DMA_VERBOSE_ON_ERROR
,
529 /* give the HW an idea of what MAC address we want */
531 *R_NETWORK_SA_0
= dev
->dev_addr
[0] | (dev
->dev_addr
[1] << 8) |
532 (dev
->dev_addr
[2] << 16) | (dev
->dev_addr
[3] << 24);
533 *R_NETWORK_SA_1
= dev
->dev_addr
[4] | (dev
->dev_addr
[5] << 8);
537 /* use promiscuous mode for testing */
538 *R_NETWORK_GA_0
= 0xffffffff;
539 *R_NETWORK_GA_1
= 0xffffffff;
541 *R_NETWORK_REC_CONFIG
= 0xd; /* broadcast rec, individ. rec, ma0 enabled */
543 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, max_size
, size1522
);
544 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, broadcast
, receive
);
545 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, ma0
, enable
);
546 SETF(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, duplex
, full_duplex
);
547 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
550 *R_NETWORK_GEN_CONFIG
=
551 IO_STATE(R_NETWORK_GEN_CONFIG
, phy
, mii_clk
) |
552 IO_STATE(R_NETWORK_GEN_CONFIG
, enable
, on
);
554 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, clr
);
555 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, delay
, none
);
556 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, cancel
, dont
);
557 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, cd
, enable
);
558 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, retry
, enable
);
559 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, pad
, enable
);
560 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, crc
, enable
);
561 *R_NETWORK_TR_CTRL
= network_tr_ctrl_shadow
;
563 local_irq_save(flags
);
565 /* enable the irq's for ethernet DMA */
568 IO_STATE(R_IRQ_MASK2_SET
, dma0_eop
, set
) |
569 IO_STATE(R_IRQ_MASK2_SET
, dma1_eop
, set
);
572 IO_STATE(R_IRQ_MASK0_SET
, overrun
, set
) |
573 IO_STATE(R_IRQ_MASK0_SET
, underrun
, set
) |
574 IO_STATE(R_IRQ_MASK0_SET
, excessive_col
, set
);
576 /* make sure the irqs are cleared */
578 *R_DMA_CH0_CLR_INTR
= IO_STATE(R_DMA_CH0_CLR_INTR
, clr_eop
, do);
579 *R_DMA_CH1_CLR_INTR
= IO_STATE(R_DMA_CH1_CLR_INTR
, clr_eop
, do);
581 /* make sure the rec and transmit error counters are cleared */
583 (void)*R_REC_COUNTERS
; /* dummy read */
584 (void)*R_TR_COUNTERS
; /* dummy read */
586 /* start the receiving DMA channel so we can receive packets from now on */
588 *R_DMA_CH1_FIRST
= virt_to_phys(myNextRxDesc
);
589 *R_DMA_CH1_CMD
= IO_STATE(R_DMA_CH1_CMD
, cmd
, start
);
591 /* Set up transmit DMA channel so it can be restarted later */
593 *R_DMA_CH0_FIRST
= 0;
594 *R_DMA_CH0_DESCR
= virt_to_phys(myLastTxDesc
);
595 netif_start_queue(dev
);
597 local_irq_restore(flags
);
599 /* Probe for transceiver */
600 if (e100_probe_transceiver(dev
))
603 /* Start duplex/speed timers */
604 add_timer(&speed_timer
);
605 add_timer(&duplex_timer
);
607 /* We are now ready to accept transmit requeusts from
608 * the queueing layer of the networking.
610 netif_carrier_on(dev
);
615 cris_free_dma(NETWORK_RX_DMA_NBR
, cardname
);
617 cris_free_dma(NETWORK_TX_DMA_NBR
, cardname
);
619 free_irq(NETWORK_STATUS_IRQ_NBR
, (void *)dev
);
621 free_irq(NETWORK_DMA_TX_IRQ_NBR
, (void *)dev
);
623 free_irq(NETWORK_DMA_RX_IRQ_NBR
, (void *)dev
);
628 #if defined(CONFIG_ETRAX_NO_PHY)
630 dummy_check_speed(struct net_device
* dev
)
636 generic_check_speed(struct net_device
* dev
)
639 struct net_local
*np
= netdev_priv(dev
);
641 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_ADVERTISE
);
642 if ((data
& ADVERTISE_100FULL
) ||
643 (data
& ADVERTISE_100HALF
))
650 tdk_check_speed(struct net_device
* dev
)
653 struct net_local
*np
= netdev_priv(dev
);
655 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
656 MDIO_TDK_DIAGNOSTIC_REG
);
657 current_speed
= (data
& MDIO_TDK_DIAGNOSTIC_RATE
? 100 : 10);
661 broadcom_check_speed(struct net_device
* dev
)
664 struct net_local
*np
= netdev_priv(dev
);
666 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
667 MDIO_AUX_CTRL_STATUS_REG
);
668 current_speed
= (data
& MDIO_BC_SPEED
? 100 : 10);
672 intel_check_speed(struct net_device
* dev
)
675 struct net_local
*np
= netdev_priv(dev
);
677 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
678 MDIO_INT_STATUS_REG_2
);
679 current_speed
= (data
& MDIO_INT_SPEED
? 100 : 10);
683 e100_check_speed(unsigned long priv
)
685 struct net_device
* dev
= (struct net_device
*)priv
;
686 struct net_local
*np
= netdev_priv(dev
);
687 static int led_initiated
= 0;
689 int old_speed
= current_speed
;
691 spin_lock(&np
->transceiver_lock
);
693 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_BMSR
);
694 if (!(data
& BMSR_LSTATUS
)) {
697 transceiver
->check_speed(dev
);
700 spin_lock(&np
->led_lock
);
701 if ((old_speed
!= current_speed
) || !led_initiated
) {
703 e100_set_network_leds(NO_NETWORK_ACTIVITY
);
705 netif_carrier_on(dev
);
707 netif_carrier_off(dev
);
709 spin_unlock(&np
->led_lock
);
711 /* Reinitialize the timer. */
712 speed_timer
.expires
= jiffies
+ NET_LINK_UP_CHECK_INTERVAL
;
713 add_timer(&speed_timer
);
715 spin_unlock(&np
->transceiver_lock
);
719 e100_negotiate(struct net_device
* dev
)
721 struct net_local
*np
= netdev_priv(dev
);
722 unsigned short data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
725 /* Discard old speed and duplex settings */
726 data
&= ~(ADVERTISE_100HALF
| ADVERTISE_100FULL
|
727 ADVERTISE_10HALF
| ADVERTISE_10FULL
);
729 switch (current_speed_selection
) {
731 if (current_duplex
== full
)
732 data
|= ADVERTISE_10FULL
;
733 else if (current_duplex
== half
)
734 data
|= ADVERTISE_10HALF
;
736 data
|= ADVERTISE_10HALF
| ADVERTISE_10FULL
;
740 if (current_duplex
== full
)
741 data
|= ADVERTISE_100FULL
;
742 else if (current_duplex
== half
)
743 data
|= ADVERTISE_100HALF
;
745 data
|= ADVERTISE_100HALF
| ADVERTISE_100FULL
;
749 if (current_duplex
== full
)
750 data
|= ADVERTISE_100FULL
| ADVERTISE_10FULL
;
751 else if (current_duplex
== half
)
752 data
|= ADVERTISE_100HALF
| ADVERTISE_10HALF
;
754 data
|= ADVERTISE_10HALF
| ADVERTISE_10FULL
|
755 ADVERTISE_100HALF
| ADVERTISE_100FULL
;
758 default: /* assume autoneg speed and duplex */
759 data
|= ADVERTISE_10HALF
| ADVERTISE_10FULL
|
760 ADVERTISE_100HALF
| ADVERTISE_100FULL
;
764 e100_set_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_ADVERTISE
, data
);
766 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_BMCR
);
767 if (autoneg_normal
) {
768 /* Renegotiate with link partner */
769 data
|= BMCR_ANENABLE
| BMCR_ANRESTART
;
771 /* Don't negotiate speed or duplex */
772 data
&= ~(BMCR_ANENABLE
| BMCR_ANRESTART
);
774 /* Set speed and duplex static */
775 if (current_speed_selection
== 10)
776 data
&= ~BMCR_SPEED100
;
778 data
|= BMCR_SPEED100
;
780 if (current_duplex
!= full
)
781 data
&= ~BMCR_FULLDPLX
;
783 data
|= BMCR_FULLDPLX
;
785 e100_set_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_BMCR
, data
);
789 e100_set_speed(struct net_device
* dev
, unsigned long speed
)
791 struct net_local
*np
= netdev_priv(dev
);
793 spin_lock(&np
->transceiver_lock
);
794 if (speed
!= current_speed_selection
) {
795 current_speed_selection
= speed
;
798 spin_unlock(&np
->transceiver_lock
);
802 e100_check_duplex(unsigned long priv
)
804 struct net_device
*dev
= (struct net_device
*)priv
;
805 struct net_local
*np
= netdev_priv(dev
);
808 spin_lock(&np
->transceiver_lock
);
809 old_duplex
= full_duplex
;
810 transceiver
->check_duplex(dev
);
811 if (old_duplex
!= full_duplex
) {
813 SETF(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, duplex
, full_duplex
);
814 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
817 /* Reinitialize the timer. */
818 duplex_timer
.expires
= jiffies
+ NET_DUPLEX_CHECK_INTERVAL
;
819 add_timer(&duplex_timer
);
820 np
->mii_if
.full_duplex
= full_duplex
;
821 spin_unlock(&np
->transceiver_lock
);
823 #if defined(CONFIG_ETRAX_NO_PHY)
825 dummy_check_duplex(struct net_device
* dev
)
831 generic_check_duplex(struct net_device
* dev
)
834 struct net_local
*np
= netdev_priv(dev
);
836 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_ADVERTISE
);
837 if ((data
& ADVERTISE_10FULL
) ||
838 (data
& ADVERTISE_100FULL
))
845 tdk_check_duplex(struct net_device
* dev
)
848 struct net_local
*np
= netdev_priv(dev
);
850 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
851 MDIO_TDK_DIAGNOSTIC_REG
);
852 full_duplex
= (data
& MDIO_TDK_DIAGNOSTIC_DPLX
) ? 1 : 0;
856 broadcom_check_duplex(struct net_device
* dev
)
859 struct net_local
*np
= netdev_priv(dev
);
861 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
862 MDIO_AUX_CTRL_STATUS_REG
);
863 full_duplex
= (data
& MDIO_BC_FULL_DUPLEX_IND
) ? 1 : 0;
867 intel_check_duplex(struct net_device
* dev
)
870 struct net_local
*np
= netdev_priv(dev
);
872 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
,
873 MDIO_INT_STATUS_REG_2
);
874 full_duplex
= (data
& MDIO_INT_FULL_DUPLEX_IND
) ? 1 : 0;
878 e100_set_duplex(struct net_device
* dev
, enum duplex new_duplex
)
880 struct net_local
*np
= netdev_priv(dev
);
882 spin_lock(&np
->transceiver_lock
);
883 if (new_duplex
!= current_duplex
) {
884 current_duplex
= new_duplex
;
887 spin_unlock(&np
->transceiver_lock
);
891 e100_probe_transceiver(struct net_device
* dev
)
895 #if !defined(CONFIG_ETRAX_NO_PHY)
896 unsigned int phyid_high
;
897 unsigned int phyid_low
;
899 struct transceiver_ops
* ops
= NULL
;
900 struct net_local
*np
= netdev_priv(dev
);
902 spin_lock(&np
->transceiver_lock
);
904 /* Probe MDIO physical address */
905 for (np
->mii_if
.phy_id
= 0; np
->mii_if
.phy_id
<= 31;
906 np
->mii_if
.phy_id
++) {
907 if (e100_get_mdio_reg(dev
,
908 np
->mii_if
.phy_id
, MII_BMSR
) != 0xffff)
911 if (np
->mii_if
.phy_id
== 32) {
916 /* Get manufacturer */
917 phyid_high
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_PHYSID1
);
918 phyid_low
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_PHYSID2
);
919 oui
= (phyid_high
<< 6) | (phyid_low
>> 10);
921 for (ops
= &transceivers
[0]; ops
->oui
; ops
++) {
927 spin_unlock(&np
->transceiver_lock
);
933 e100_get_mdio_reg(struct net_device
*dev
, int phy_id
, int location
)
935 unsigned short cmd
; /* Data to be sent on MDIO port */
936 int data
; /* Data read from MDIO */
939 /* Start of frame, OP Code, Physical Address, Register Address */
940 cmd
= (MDIO_START
<< 14) | (MDIO_READ
<< 12) | (phy_id
<< 7) |
943 e100_send_mdio_cmd(cmd
, 0);
948 for (bitCounter
=15; bitCounter
>=0 ; bitCounter
--) {
949 data
|= (e100_receive_mdio_bit() << bitCounter
);
956 e100_set_mdio_reg(struct net_device
*dev
, int phy_id
, int location
, int value
)
961 cmd
= (MDIO_START
<< 14) | (MDIO_WRITE
<< 12) | (phy_id
<< 7) |
964 e100_send_mdio_cmd(cmd
, 1);
967 for (bitCounter
=15; bitCounter
>=0 ; bitCounter
--) {
968 e100_send_mdio_bit(GET_BIT(bitCounter
, value
));
974 e100_send_mdio_cmd(unsigned short cmd
, int write_cmd
)
977 unsigned char data
= 0x2;
980 for (bitCounter
= 31; bitCounter
>= 0; bitCounter
--)
981 e100_send_mdio_bit(GET_BIT(bitCounter
, MDIO_PREAMBLE
));
983 for (bitCounter
= 15; bitCounter
>= 2; bitCounter
--)
984 e100_send_mdio_bit(GET_BIT(bitCounter
, cmd
));
987 for (bitCounter
= 1; bitCounter
>= 0 ; bitCounter
--)
989 e100_send_mdio_bit(GET_BIT(bitCounter
, data
));
991 e100_receive_mdio_bit();
995 e100_send_mdio_bit(unsigned char bit
)
997 *R_NETWORK_MGM_CTRL
=
998 IO_STATE(R_NETWORK_MGM_CTRL
, mdoe
, enable
) |
999 IO_FIELD(R_NETWORK_MGM_CTRL
, mdio
, bit
);
1001 *R_NETWORK_MGM_CTRL
=
1002 IO_STATE(R_NETWORK_MGM_CTRL
, mdoe
, enable
) |
1003 IO_MASK(R_NETWORK_MGM_CTRL
, mdck
) |
1004 IO_FIELD(R_NETWORK_MGM_CTRL
, mdio
, bit
);
1008 static unsigned char
1009 e100_receive_mdio_bit(void)
1012 *R_NETWORK_MGM_CTRL
= 0;
1013 bit
= IO_EXTRACT(R_NETWORK_STAT
, mdio
, *R_NETWORK_STAT
);
1015 *R_NETWORK_MGM_CTRL
= IO_MASK(R_NETWORK_MGM_CTRL
, mdck
);
1021 e100_reset_transceiver(struct net_device
* dev
)
1023 struct net_local
*np
= netdev_priv(dev
);
1025 unsigned short data
;
1028 data
= e100_get_mdio_reg(dev
, np
->mii_if
.phy_id
, MII_BMCR
);
1030 cmd
= (MDIO_START
<< 14) | (MDIO_WRITE
<< 12) | (np
->mii_if
.phy_id
<< 7) | (MII_BMCR
<< 2);
1032 e100_send_mdio_cmd(cmd
, 1);
1036 for (bitCounter
= 15; bitCounter
>= 0 ; bitCounter
--) {
1037 e100_send_mdio_bit(GET_BIT(bitCounter
, data
));
1041 /* Called by upper layers if they decide it took too long to complete
1042 * sending a packet - we need to reset and stuff.
1046 e100_tx_timeout(struct net_device
*dev
)
1048 struct net_local
*np
= netdev_priv(dev
);
1049 unsigned long flags
;
1051 spin_lock_irqsave(&np
->lock
, flags
);
1053 printk(KERN_WARNING
"%s: transmit timed out, %s?\n", dev
->name
,
1054 tx_done(dev
) ? "IRQ problem" : "network cable problem");
1056 /* remember we got an error */
1058 dev
->stats
.tx_errors
++;
1060 /* reset the TX DMA in case it has hung on something */
1062 RESET_DMA(NETWORK_TX_DMA_NBR
);
1063 WAIT_DMA(NETWORK_TX_DMA_NBR
);
1065 /* Reset the transceiver. */
1067 e100_reset_transceiver(dev
);
1069 /* and get rid of the packets that never got an interrupt */
1070 while (myFirstTxDesc
!= myNextTxDesc
) {
1071 dev_kfree_skb(myFirstTxDesc
->skb
);
1072 myFirstTxDesc
->skb
= 0;
1073 myFirstTxDesc
= phys_to_virt(myFirstTxDesc
->descr
.next
);
1076 /* Set up transmit DMA channel so it can be restarted later */
1077 *R_DMA_CH0_FIRST
= 0;
1078 *R_DMA_CH0_DESCR
= virt_to_phys(myLastTxDesc
);
1080 /* tell the upper layers we're ok again */
1082 netif_wake_queue(dev
);
1083 spin_unlock_irqrestore(&np
->lock
, flags
);
1087 /* This will only be invoked if the driver is _not_ in XOFF state.
1088 * What this means is that we need not check it, and that this
1089 * invariant will hold if we make sure that the netif_*_queue()
1090 * calls are done at the proper times.
1094 e100_send_packet(struct sk_buff
*skb
, struct net_device
*dev
)
1096 struct net_local
*np
= netdev_priv(dev
);
1097 unsigned char *buf
= skb
->data
;
1098 unsigned long flags
;
1101 printk("send packet len %d\n", length
);
1103 spin_lock_irqsave(&np
->lock
, flags
); /* protect from tx_interrupt and ourself */
1105 myNextTxDesc
->skb
= skb
;
1107 netif_trans_update(dev
); /* NETIF_F_LLTX driver :( */
1109 e100_hardware_send_packet(np
, buf
, skb
->len
);
1111 myNextTxDesc
= phys_to_virt(myNextTxDesc
->descr
.next
);
1113 /* Stop queue if full */
1114 if (myNextTxDesc
== myFirstTxDesc
) {
1115 netif_stop_queue(dev
);
1118 spin_unlock_irqrestore(&np
->lock
, flags
);
1120 return NETDEV_TX_OK
;
1124 * The typical workload of the driver:
1125 * Handle the network interface interrupts.
1129 e100rxtx_interrupt(int irq
, void *dev_id
)
1131 struct net_device
*dev
= (struct net_device
*)dev_id
;
1132 unsigned long irqbits
;
1135 * Note that both rx and tx interrupts are blocked at this point,
1136 * regardless of which got us here.
1139 irqbits
= *R_IRQ_MASK2_RD
;
1141 /* Handle received packets */
1142 if (irqbits
& IO_STATE(R_IRQ_MASK2_RD
, dma1_eop
, active
)) {
1143 /* acknowledge the eop interrupt */
1145 *R_DMA_CH1_CLR_INTR
= IO_STATE(R_DMA_CH1_CLR_INTR
, clr_eop
, do);
1147 /* check if one or more complete packets were indeed received */
1149 while ((*R_DMA_CH1_FIRST
!= virt_to_phys(myNextRxDesc
)) &&
1150 (myNextRxDesc
!= myLastRxDesc
)) {
1151 /* Take out the buffer and give it to the OS, then
1152 * allocate a new buffer to put a packet in.
1155 dev
->stats
.rx_packets
++;
1156 /* restart/continue on the channel, for safety */
1157 *R_DMA_CH1_CMD
= IO_STATE(R_DMA_CH1_CMD
, cmd
, restart
);
1158 /* clear dma channel 1 eop/descr irq bits */
1159 *R_DMA_CH1_CLR_INTR
=
1160 IO_STATE(R_DMA_CH1_CLR_INTR
, clr_eop
, do) |
1161 IO_STATE(R_DMA_CH1_CLR_INTR
, clr_descr
, do);
1163 /* now, we might have gotten another packet
1164 so we have to loop back and check if so */
1168 /* Report any packets that have been sent */
1169 while (virt_to_phys(myFirstTxDesc
) != *R_DMA_CH0_FIRST
&&
1170 (netif_queue_stopped(dev
) || myFirstTxDesc
!= myNextTxDesc
)) {
1171 dev
->stats
.tx_bytes
+= myFirstTxDesc
->skb
->len
;
1172 dev
->stats
.tx_packets
++;
1174 /* dma is ready with the transmission of the data in tx_skb, so now
1175 we can release the skb memory */
1176 dev_kfree_skb_irq(myFirstTxDesc
->skb
);
1177 myFirstTxDesc
->skb
= 0;
1178 myFirstTxDesc
= phys_to_virt(myFirstTxDesc
->descr
.next
);
1179 /* Wake up queue. */
1180 netif_wake_queue(dev
);
1183 if (irqbits
& IO_STATE(R_IRQ_MASK2_RD
, dma0_eop
, active
)) {
1184 /* acknowledge the eop interrupt. */
1185 *R_DMA_CH0_CLR_INTR
= IO_STATE(R_DMA_CH0_CLR_INTR
, clr_eop
, do);
1192 e100nw_interrupt(int irq
, void *dev_id
)
1194 struct net_device
*dev
= (struct net_device
*)dev_id
;
1195 unsigned long irqbits
= *R_IRQ_MASK0_RD
;
1197 /* check for underrun irq */
1198 if (irqbits
& IO_STATE(R_IRQ_MASK0_RD
, underrun
, active
)) {
1199 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, clr
);
1200 *R_NETWORK_TR_CTRL
= network_tr_ctrl_shadow
;
1201 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, nop
);
1202 dev
->stats
.tx_errors
++;
1203 D(printk("ethernet receiver underrun!\n"));
1206 /* check for overrun irq */
1207 if (irqbits
& IO_STATE(R_IRQ_MASK0_RD
, overrun
, active
)) {
1208 update_rx_stats(&dev
->stats
); /* this will ack the irq */
1209 D(printk("ethernet receiver overrun!\n"));
1211 /* check for excessive collision irq */
1212 if (irqbits
& IO_STATE(R_IRQ_MASK0_RD
, excessive_col
, active
)) {
1213 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, clr
);
1214 *R_NETWORK_TR_CTRL
= network_tr_ctrl_shadow
;
1215 SETS(network_tr_ctrl_shadow
, R_NETWORK_TR_CTRL
, clr_error
, nop
);
1216 dev
->stats
.tx_errors
++;
1217 D(printk("ethernet excessive collisions!\n"));
1222 /* We have a good packet(s), get it/them out of the buffers. */
1224 e100_rx(struct net_device
*dev
)
1226 struct sk_buff
*skb
;
1228 struct net_local
*np
= netdev_priv(dev
);
1229 unsigned char *skb_data_ptr
;
1233 etrax_eth_descr
*prevRxDesc
; /* The descriptor right before myNextRxDesc */
1234 spin_lock(&np
->led_lock
);
1235 if (!led_active
&& time_after(jiffies
, led_next_time
)) {
1236 /* light the network leds depending on the current speed. */
1237 e100_set_network_leds(NETWORK_ACTIVITY
);
1239 /* Set the earliest time we may clear the LED */
1240 led_next_time
= jiffies
+ NET_FLASH_TIME
;
1242 mod_timer(&clear_led_timer
, jiffies
+ HZ
/10);
1244 spin_unlock(&np
->led_lock
);
1246 length
= myNextRxDesc
->descr
.hw_len
- 4;
1247 dev
->stats
.rx_bytes
+= length
;
1250 printk("Got a packet of length %d:\n", length
);
1251 /* dump the first bytes in the packet */
1252 skb_data_ptr
= (unsigned char *)phys_to_virt(myNextRxDesc
->descr
.buf
);
1253 for (i
= 0; i
< 8; i
++) {
1254 printk("%d: %.2x %.2x %.2x %.2x %.2x %.2x %.2x %.2x\n", i
* 8,
1255 skb_data_ptr
[0],skb_data_ptr
[1],skb_data_ptr
[2],skb_data_ptr
[3],
1256 skb_data_ptr
[4],skb_data_ptr
[5],skb_data_ptr
[6],skb_data_ptr
[7]);
1261 if (length
< RX_COPYBREAK
) {
1262 /* Small packet, copy data */
1263 skb
= dev_alloc_skb(length
- ETHER_HEAD_LEN
);
1265 dev
->stats
.rx_errors
++;
1266 printk(KERN_NOTICE
"%s: Memory squeeze, dropping packet.\n", dev
->name
);
1267 goto update_nextrxdesc
;
1270 skb_put(skb
, length
- ETHER_HEAD_LEN
); /* allocate room for the packet body */
1271 skb_data_ptr
= skb_push(skb
, ETHER_HEAD_LEN
); /* allocate room for the header */
1274 printk("head = 0x%x, data = 0x%x, tail = 0x%x, end = 0x%x\n",
1275 skb
->head
, skb
->data
, skb_tail_pointer(skb
),
1276 skb_end_pointer(skb
));
1277 printk("copying packet to 0x%x.\n", skb_data_ptr
);
1280 memcpy(skb_data_ptr
, phys_to_virt(myNextRxDesc
->descr
.buf
), length
);
1283 /* Large packet, send directly to upper layers and allocate new
1284 * memory (aligned to cache line boundary to avoid bug).
1285 * Before sending the skb to upper layers we must make sure
1286 * that skb->data points to the aligned start of the packet.
1289 struct sk_buff
*new_skb
= dev_alloc_skb(MAX_MEDIA_DATA_SIZE
+ 2 * L1_CACHE_BYTES
);
1291 dev
->stats
.rx_errors
++;
1292 printk(KERN_NOTICE
"%s: Memory squeeze, dropping packet.\n", dev
->name
);
1293 goto update_nextrxdesc
;
1295 skb
= myNextRxDesc
->skb
;
1296 align
= (int)phys_to_virt(myNextRxDesc
->descr
.buf
) - (int)skb
->data
;
1297 skb_put(skb
, length
+ align
);
1298 skb_pull(skb
, align
); /* Remove alignment bytes */
1299 myNextRxDesc
->skb
= new_skb
;
1300 myNextRxDesc
->descr
.buf
= L1_CACHE_ALIGN(virt_to_phys(myNextRxDesc
->skb
->data
));
1303 skb
->protocol
= eth_type_trans(skb
, dev
);
1305 /* Send the packet to the upper layers */
1309 /* Prepare for next packet */
1310 myNextRxDesc
->descr
.status
= 0;
1311 prevRxDesc
= myNextRxDesc
;
1312 myNextRxDesc
= phys_to_virt(myNextRxDesc
->descr
.next
);
1316 /* Check if descriptors should be returned */
1317 if (rx_queue_len
== RX_QUEUE_THRESHOLD
) {
1318 flush_etrax_cache();
1319 prevRxDesc
->descr
.ctrl
|= d_eol
;
1320 myLastRxDesc
->descr
.ctrl
&= ~d_eol
;
1321 myLastRxDesc
= prevRxDesc
;
1326 /* The inverse routine to net_open(). */
1328 e100_close(struct net_device
*dev
)
1330 printk(KERN_INFO
"Closing %s.\n", dev
->name
);
1332 netif_stop_queue(dev
);
1335 IO_STATE(R_IRQ_MASK0_CLR
, overrun
, clr
) |
1336 IO_STATE(R_IRQ_MASK0_CLR
, underrun
, clr
) |
1337 IO_STATE(R_IRQ_MASK0_CLR
, excessive_col
, clr
);
1340 IO_STATE(R_IRQ_MASK2_CLR
, dma0_descr
, clr
) |
1341 IO_STATE(R_IRQ_MASK2_CLR
, dma0_eop
, clr
) |
1342 IO_STATE(R_IRQ_MASK2_CLR
, dma1_descr
, clr
) |
1343 IO_STATE(R_IRQ_MASK2_CLR
, dma1_eop
, clr
);
1345 /* Stop the receiver and the transmitter */
1347 RESET_DMA(NETWORK_TX_DMA_NBR
);
1348 RESET_DMA(NETWORK_RX_DMA_NBR
);
1350 /* Flush the Tx and disable Rx here. */
1352 free_irq(NETWORK_DMA_RX_IRQ_NBR
, (void *)dev
);
1353 free_irq(NETWORK_DMA_TX_IRQ_NBR
, (void *)dev
);
1354 free_irq(NETWORK_STATUS_IRQ_NBR
, (void *)dev
);
1356 cris_free_dma(NETWORK_TX_DMA_NBR
, cardname
);
1357 cris_free_dma(NETWORK_RX_DMA_NBR
, cardname
);
1359 /* Update the statistics here. */
1361 update_rx_stats(&dev
->stats
);
1362 update_tx_stats(&dev
->stats
);
1364 /* Stop speed/duplex timers */
1365 del_timer(&speed_timer
);
1366 del_timer(&duplex_timer
);
1372 e100_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
1374 struct mii_ioctl_data
*data
= if_mii(ifr
);
1375 struct net_local
*np
= netdev_priv(dev
);
1379 spin_lock(&np
->lock
); /* Preempt protection */
1381 /* The ioctls below should be considered obsolete but are */
1382 /* still present for compatibility with old scripts/apps */
1383 case SET_ETH_SPEED_10
: /* 10 Mbps */
1384 e100_set_speed(dev
, 10);
1386 case SET_ETH_SPEED_100
: /* 100 Mbps */
1387 e100_set_speed(dev
, 100);
1389 case SET_ETH_SPEED_AUTO
: /* Auto-negotiate speed */
1390 e100_set_speed(dev
, 0);
1392 case SET_ETH_DUPLEX_HALF
: /* Half duplex */
1393 e100_set_duplex(dev
, half
);
1395 case SET_ETH_DUPLEX_FULL
: /* Full duplex */
1396 e100_set_duplex(dev
, full
);
1398 case SET_ETH_DUPLEX_AUTO
: /* Auto-negotiate duplex */
1399 e100_set_duplex(dev
, autoneg
);
1401 case SET_ETH_AUTONEG
:
1402 old_autoneg
= autoneg_normal
;
1403 autoneg_normal
= *(int*)data
;
1404 if (autoneg_normal
!= old_autoneg
)
1405 e100_negotiate(dev
);
1408 rc
= generic_mii_ioctl(&np
->mii_if
, if_mii(ifr
),
1412 spin_unlock(&np
->lock
);
1416 static int e100_get_link_ksettings(struct net_device
*dev
,
1417 struct ethtool_link_ksettings
*cmd
)
1419 struct net_local
*np
= netdev_priv(dev
);
1422 spin_lock_irq(&np
->lock
);
1423 mii_ethtool_get_link_ksettings(&np
->mii_if
, cmd
);
1424 spin_unlock_irq(&np
->lock
);
1426 /* The PHY may support 1000baseT, but the Etrax100 does not. */
1427 ethtool_convert_link_mode_to_legacy_u32(&supported
,
1428 cmd
->link_modes
.supported
);
1430 supported
&= ~(SUPPORTED_1000baseT_Half
| SUPPORTED_1000baseT_Full
);
1432 ethtool_convert_legacy_u32_to_link_mode(cmd
->link_modes
.supported
,
1438 static int e100_set_link_ksettings(struct net_device
*dev
,
1439 const struct ethtool_link_ksettings
*ecmd
)
1441 if (ecmd
->base
.autoneg
== AUTONEG_ENABLE
) {
1442 e100_set_duplex(dev
, autoneg
);
1443 e100_set_speed(dev
, 0);
1445 e100_set_duplex(dev
, ecmd
->base
.duplex
== DUPLEX_HALF
?
1447 e100_set_speed(dev
, ecmd
->base
.speed
== SPEED_10
? 10 : 100);
1453 static void e100_get_drvinfo(struct net_device
*dev
,
1454 struct ethtool_drvinfo
*info
)
1456 strlcpy(info
->driver
, "ETRAX 100LX", sizeof(info
->driver
));
1457 strlcpy(info
->version
, "$Revision: 1.31 $", sizeof(info
->version
));
1458 strlcpy(info
->fw_version
, "N/A", sizeof(info
->fw_version
));
1459 strlcpy(info
->bus_info
, "N/A", sizeof(info
->bus_info
));
1462 static int e100_nway_reset(struct net_device
*dev
)
1464 if (current_duplex
== autoneg
&& current_speed_selection
== 0)
1465 e100_negotiate(dev
);
1469 static const struct ethtool_ops e100_ethtool_ops
= {
1470 .get_drvinfo
= e100_get_drvinfo
,
1471 .nway_reset
= e100_nway_reset
,
1472 .get_link
= ethtool_op_get_link
,
1473 .get_link_ksettings
= e100_get_link_ksettings
,
1474 .set_link_ksettings
= e100_set_link_ksettings
,
1478 e100_set_config(struct net_device
*dev
, struct ifmap
*map
)
1480 struct net_local
*np
= netdev_priv(dev
);
1482 spin_lock(&np
->lock
); /* Preempt protection */
1485 case IF_PORT_UNKNOWN
:
1487 e100_set_speed(dev
, 0);
1488 e100_set_duplex(dev
, autoneg
);
1490 case IF_PORT_10BASET
:
1491 e100_set_speed(dev
, 10);
1492 e100_set_duplex(dev
, autoneg
);
1494 case IF_PORT_100BASET
:
1495 case IF_PORT_100BASETX
:
1496 e100_set_speed(dev
, 100);
1497 e100_set_duplex(dev
, autoneg
);
1499 case IF_PORT_100BASEFX
:
1500 case IF_PORT_10BASE2
:
1502 spin_unlock(&np
->lock
);
1505 printk(KERN_ERR
"%s: Invalid media selected", dev
->name
);
1506 spin_unlock(&np
->lock
);
1509 spin_unlock(&np
->lock
);
1514 update_rx_stats(struct net_device_stats
*es
)
1516 unsigned long r
= *R_REC_COUNTERS
;
1517 /* update stats relevant to reception errors */
1518 es
->rx_fifo_errors
+= IO_EXTRACT(R_REC_COUNTERS
, congestion
, r
);
1519 es
->rx_crc_errors
+= IO_EXTRACT(R_REC_COUNTERS
, crc_error
, r
);
1520 es
->rx_frame_errors
+= IO_EXTRACT(R_REC_COUNTERS
, alignment_error
, r
);
1521 es
->rx_length_errors
+= IO_EXTRACT(R_REC_COUNTERS
, oversize
, r
);
1525 update_tx_stats(struct net_device_stats
*es
)
1527 unsigned long r
= *R_TR_COUNTERS
;
1528 /* update stats relevant to transmission errors */
1530 IO_EXTRACT(R_TR_COUNTERS
, single_col
, r
) +
1531 IO_EXTRACT(R_TR_COUNTERS
, multiple_col
, r
);
1535 * Get the current statistics.
1536 * This may be called with the card open or closed.
1538 static struct net_device_stats
*
1539 e100_get_stats(struct net_device
*dev
)
1541 struct net_local
*lp
= netdev_priv(dev
);
1542 unsigned long flags
;
1544 spin_lock_irqsave(&lp
->lock
, flags
);
1546 update_rx_stats(&dev
->stats
);
1547 update_tx_stats(&dev
->stats
);
1549 spin_unlock_irqrestore(&lp
->lock
, flags
);
1554 * Set or clear the multicast filter for this adaptor.
1555 * num_addrs == -1 Promiscuous mode, receive all packets
1556 * num_addrs == 0 Normal mode, clear multicast list
1557 * num_addrs > 0 Multicast mode, receive normal and MC packets,
1558 * and do best-effort filtering.
1561 set_multicast_list(struct net_device
*dev
)
1563 struct net_local
*lp
= netdev_priv(dev
);
1564 int num_addr
= netdev_mc_count(dev
);
1565 unsigned long int lo_bits
;
1566 unsigned long int hi_bits
;
1568 spin_lock(&lp
->lock
);
1569 if (dev
->flags
& IFF_PROMISC
) {
1570 /* promiscuous mode */
1571 lo_bits
= 0xfffffffful
;
1572 hi_bits
= 0xfffffffful
;
1574 /* Enable individual receive */
1575 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, individual
, receive
);
1576 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
1577 } else if (dev
->flags
& IFF_ALLMULTI
) {
1578 /* enable all multicasts */
1579 lo_bits
= 0xfffffffful
;
1580 hi_bits
= 0xfffffffful
;
1582 /* Disable individual receive */
1583 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, individual
, discard
);
1584 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
1585 } else if (num_addr
== 0) {
1586 /* Normal, clear the mc list */
1587 lo_bits
= 0x00000000ul
;
1588 hi_bits
= 0x00000000ul
;
1590 /* Disable individual receive */
1591 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, individual
, discard
);
1592 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
1594 /* MC mode, receive normal and MC packets */
1596 struct netdev_hw_addr
*ha
;
1599 lo_bits
= 0x00000000ul
;
1600 hi_bits
= 0x00000000ul
;
1601 netdev_for_each_mc_addr(ha
, dev
) {
1602 /* Calculate the hash index for the GA registers */
1606 hash_ix
^= (*baddr
) & 0x3f;
1607 hash_ix
^= ((*baddr
) >> 6) & 0x03;
1609 hash_ix
^= ((*baddr
) << 2) & 0x03c;
1610 hash_ix
^= ((*baddr
) >> 4) & 0xf;
1612 hash_ix
^= ((*baddr
) << 4) & 0x30;
1613 hash_ix
^= ((*baddr
) >> 2) & 0x3f;
1615 hash_ix
^= (*baddr
) & 0x3f;
1616 hash_ix
^= ((*baddr
) >> 6) & 0x03;
1618 hash_ix
^= ((*baddr
) << 2) & 0x03c;
1619 hash_ix
^= ((*baddr
) >> 4) & 0xf;
1621 hash_ix
^= ((*baddr
) << 4) & 0x30;
1622 hash_ix
^= ((*baddr
) >> 2) & 0x3f;
1626 if (hash_ix
>= 32) {
1627 hi_bits
|= (1 << (hash_ix
-32));
1629 lo_bits
|= (1 << hash_ix
);
1632 /* Disable individual receive */
1633 SETS(network_rec_config_shadow
, R_NETWORK_REC_CONFIG
, individual
, discard
);
1634 *R_NETWORK_REC_CONFIG
= network_rec_config_shadow
;
1636 *R_NETWORK_GA_0
= lo_bits
;
1637 *R_NETWORK_GA_1
= hi_bits
;
1638 spin_unlock(&lp
->lock
);
1642 e100_hardware_send_packet(struct net_local
*np
, char *buf
, int length
)
1644 D(printk("e100 send pack, buf 0x%x len %d\n", buf
, length
));
1646 spin_lock(&np
->led_lock
);
1647 if (!led_active
&& time_after(jiffies
, led_next_time
)) {
1648 /* light the network leds depending on the current speed. */
1649 e100_set_network_leds(NETWORK_ACTIVITY
);
1651 /* Set the earliest time we may clear the LED */
1652 led_next_time
= jiffies
+ NET_FLASH_TIME
;
1654 mod_timer(&clear_led_timer
, jiffies
+ HZ
/10);
1656 spin_unlock(&np
->led_lock
);
1658 /* configure the tx dma descriptor */
1659 myNextTxDesc
->descr
.sw_len
= length
;
1660 myNextTxDesc
->descr
.ctrl
= d_eop
| d_eol
| d_wait
;
1661 myNextTxDesc
->descr
.buf
= virt_to_phys(buf
);
1663 /* Move end of list */
1664 myLastTxDesc
->descr
.ctrl
&= ~d_eol
;
1665 myLastTxDesc
= myNextTxDesc
;
1667 /* Restart DMA channel */
1668 *R_DMA_CH0_CMD
= IO_STATE(R_DMA_CH0_CMD
, cmd
, restart
);
1672 e100_clear_network_leds(unsigned long dummy
)
1674 struct net_device
*dev
= (struct net_device
*)dummy
;
1675 struct net_local
*np
= netdev_priv(dev
);
1677 spin_lock(&np
->led_lock
);
1679 if (led_active
&& time_after(jiffies
, led_next_time
)) {
1680 e100_set_network_leds(NO_NETWORK_ACTIVITY
);
1682 /* Set the earliest time we may set the LED */
1683 led_next_time
= jiffies
+ NET_FLASH_PAUSE
;
1687 spin_unlock(&np
->led_lock
);
1691 e100_set_network_leds(int active
)
1693 #if defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK)
1694 int light_leds
= (active
== NO_NETWORK_ACTIVITY
);
1695 #elif defined(CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY)
1696 int light_leds
= (active
== NETWORK_ACTIVITY
);
1698 #error "Define either CONFIG_ETRAX_NETWORK_LED_ON_WHEN_LINK or CONFIG_ETRAX_NETWORK_LED_ON_WHEN_ACTIVITY"
1701 if (!current_speed
) {
1702 /* Make LED red, link is down */
1703 CRIS_LED_NETWORK_SET(CRIS_LED_OFF
);
1704 } else if (light_leds
) {
1705 if (current_speed
== 10) {
1706 CRIS_LED_NETWORK_SET(CRIS_LED_ORANGE
);
1708 CRIS_LED_NETWORK_SET(CRIS_LED_GREEN
);
1711 CRIS_LED_NETWORK_SET(CRIS_LED_OFF
);
1715 #ifdef CONFIG_NET_POLL_CONTROLLER
1717 e100_netpoll(struct net_device
* netdev
)
1719 e100rxtx_interrupt(NETWORK_DMA_TX_IRQ_NBR
, netdev
);
1725 e100_boot_setup(char* str
)
1727 struct sockaddr sa
= {0};
1730 /* Parse the colon separated Ethernet station address */
1731 for (i
= 0; i
< ETH_ALEN
; i
++) {
1733 if (sscanf(str
+ 3*i
, "%2x", &tmp
) != 1) {
1734 printk(KERN_WARNING
"Malformed station address");
1737 sa
.sa_data
[i
] = (char)tmp
;
1744 __setup("etrax100_eth=", e100_boot_setup
);