Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* $Id: sunlance.c,v 1.112 2002/01/15 06:48:55 davem Exp $ |
2 | * lance.c: Linux/Sparc/Lance driver | |
3 | * | |
4 | * Written 1995, 1996 by Miguel de Icaza | |
5 | * Sources: | |
6 | * The Linux depca driver | |
7 | * The Linux lance driver. | |
8 | * The Linux skeleton driver. | |
9 | * The NetBSD Sparc/Lance driver. | |
10 | * Theo de Raadt (deraadt@openbsd.org) | |
11 | * NCR92C990 Lan Controller manual | |
12 | * | |
13 | * 1.4: | |
14 | * Added support to run with a ledma on the Sun4m | |
15 | * | |
16 | * 1.5: | |
17 | * Added multiple card detection. | |
18 | * | |
19 | * 4/17/96: Burst sizes and tpe selection on sun4m by Eddie C. Dost | |
20 | * (ecd@skynet.be) | |
21 | * | |
22 | * 5/15/96: auto carrier detection on sun4m by Eddie C. Dost | |
23 | * (ecd@skynet.be) | |
24 | * | |
25 | * 5/17/96: lebuffer on scsi/ether cards now work David S. Miller | |
26 | * (davem@caip.rutgers.edu) | |
27 | * | |
28 | * 5/29/96: override option 'tpe-link-test?', if it is 'false', as | |
29 | * this disables auto carrier detection on sun4m. Eddie C. Dost | |
30 | * (ecd@skynet.be) | |
31 | * | |
32 | * 1.7: | |
33 | * 6/26/96: Bug fix for multiple ledmas, miguel. | |
34 | * | |
35 | * 1.8: | |
36 | * Stole multicast code from depca.c, fixed lance_tx. | |
37 | * | |
38 | * 1.9: | |
39 | * 8/21/96: Fixed the multicast code (Pedro Roque) | |
40 | * | |
41 | * 8/28/96: Send fake packet in lance_open() if auto_select is true, | |
42 | * so we can detect the carrier loss condition in time. | |
43 | * Eddie C. Dost (ecd@skynet.be) | |
44 | * | |
45 | * 9/15/96: Align rx_buf so that eth_copy_and_sum() won't cause an | |
46 | * MNA trap during chksum_partial_copy(). (ecd@skynet.be) | |
47 | * | |
48 | * 11/17/96: Handle LE_C0_MERR in lance_interrupt(). (ecd@skynet.be) | |
49 | * | |
50 | * 12/22/96: Don't loop forever in lance_rx() on incomplete packets. | |
51 | * This was the sun4c killer. Shit, stupid bug. | |
52 | * (ecd@skynet.be) | |
53 | * | |
54 | * 1.10: | |
55 | * 1/26/97: Modularize driver. (ecd@skynet.be) | |
56 | * | |
57 | * 1.11: | |
58 | * 12/27/97: Added sun4d support. (jj@sunsite.mff.cuni.cz) | |
59 | * | |
60 | * 1.12: | |
61 | * 11/3/99: Fixed SMP race in lance_start_xmit found by davem. | |
62 | * Anton Blanchard (anton@progsoc.uts.edu.au) | |
63 | * 2.00: 11/9/99: Massive overhaul and port to new SBUS driver interfaces. | |
64 | * David S. Miller (davem@redhat.com) | |
65 | * 2.01: | |
66 | * 11/08/01: Use library crc32 functions (Matt_Domsch@dell.com) | |
67 | * | |
68 | */ | |
69 | ||
70 | #undef DEBUG_DRIVER | |
71 | ||
72 | static char version[] = | |
73 | "sunlance.c:v2.02 24/Aug/03 Miguel de Icaza (miguel@nuclecu.unam.mx)\n"; | |
74 | ||
75 | static char lancestr[] = "LANCE"; | |
76 | ||
77 | #include <linux/config.h> | |
78 | #include <linux/module.h> | |
79 | #include <linux/kernel.h> | |
80 | #include <linux/types.h> | |
81 | #include <linux/fcntl.h> | |
82 | #include <linux/interrupt.h> | |
83 | #include <linux/ioport.h> | |
84 | #include <linux/in.h> | |
85 | #include <linux/slab.h> | |
86 | #include <linux/string.h> | |
87 | #include <linux/delay.h> | |
88 | #include <linux/init.h> | |
89 | #include <linux/crc32.h> | |
90 | #include <linux/errno.h> | |
91 | #include <linux/socket.h> /* Used for the temporal inet entries and routing */ | |
92 | #include <linux/route.h> | |
93 | #include <linux/netdevice.h> | |
94 | #include <linux/etherdevice.h> | |
95 | #include <linux/skbuff.h> | |
96 | #include <linux/ethtool.h> | |
97 | #include <linux/bitops.h> | |
98 | ||
99 | #include <asm/system.h> | |
100 | #include <asm/io.h> | |
101 | #include <asm/dma.h> | |
102 | #include <asm/pgtable.h> | |
103 | #include <asm/byteorder.h> /* Used by the checksum routines */ | |
104 | #include <asm/idprom.h> | |
105 | #include <asm/sbus.h> | |
106 | #include <asm/openprom.h> | |
107 | #include <asm/oplib.h> | |
108 | #include <asm/auxio.h> /* For tpe-link-test? setting */ | |
109 | #include <asm/irq.h> | |
110 | ||
111 | /* Define: 2^4 Tx buffers and 2^4 Rx buffers */ | |
112 | #ifndef LANCE_LOG_TX_BUFFERS | |
113 | #define LANCE_LOG_TX_BUFFERS 4 | |
114 | #define LANCE_LOG_RX_BUFFERS 4 | |
115 | #endif | |
116 | ||
117 | #define LE_CSR0 0 | |
118 | #define LE_CSR1 1 | |
119 | #define LE_CSR2 2 | |
120 | #define LE_CSR3 3 | |
121 | ||
122 | #define LE_MO_PROM 0x8000 /* Enable promiscuous mode */ | |
123 | ||
124 | #define LE_C0_ERR 0x8000 /* Error: set if BAB, SQE, MISS or ME is set */ | |
125 | #define LE_C0_BABL 0x4000 /* BAB: Babble: tx timeout. */ | |
126 | #define LE_C0_CERR 0x2000 /* SQE: Signal quality error */ | |
127 | #define LE_C0_MISS 0x1000 /* MISS: Missed a packet */ | |
128 | #define LE_C0_MERR 0x0800 /* ME: Memory error */ | |
129 | #define LE_C0_RINT 0x0400 /* Received interrupt */ | |
130 | #define LE_C0_TINT 0x0200 /* Transmitter Interrupt */ | |
131 | #define LE_C0_IDON 0x0100 /* IFIN: Init finished. */ | |
132 | #define LE_C0_INTR 0x0080 /* Interrupt or error */ | |
133 | #define LE_C0_INEA 0x0040 /* Interrupt enable */ | |
134 | #define LE_C0_RXON 0x0020 /* Receiver on */ | |
135 | #define LE_C0_TXON 0x0010 /* Transmitter on */ | |
136 | #define LE_C0_TDMD 0x0008 /* Transmitter demand */ | |
137 | #define LE_C0_STOP 0x0004 /* Stop the card */ | |
138 | #define LE_C0_STRT 0x0002 /* Start the card */ | |
139 | #define LE_C0_INIT 0x0001 /* Init the card */ | |
140 | ||
141 | #define LE_C3_BSWP 0x4 /* SWAP */ | |
142 | #define LE_C3_ACON 0x2 /* ALE Control */ | |
143 | #define LE_C3_BCON 0x1 /* Byte control */ | |
144 | ||
145 | /* Receive message descriptor 1 */ | |
146 | #define LE_R1_OWN 0x80 /* Who owns the entry */ | |
147 | #define LE_R1_ERR 0x40 /* Error: if FRA, OFL, CRC or BUF is set */ | |
148 | #define LE_R1_FRA 0x20 /* FRA: Frame error */ | |
149 | #define LE_R1_OFL 0x10 /* OFL: Frame overflow */ | |
150 | #define LE_R1_CRC 0x08 /* CRC error */ | |
151 | #define LE_R1_BUF 0x04 /* BUF: Buffer error */ | |
152 | #define LE_R1_SOP 0x02 /* Start of packet */ | |
153 | #define LE_R1_EOP 0x01 /* End of packet */ | |
154 | #define LE_R1_POK 0x03 /* Packet is complete: SOP + EOP */ | |
155 | ||
156 | #define LE_T1_OWN 0x80 /* Lance owns the packet */ | |
157 | #define LE_T1_ERR 0x40 /* Error summary */ | |
158 | #define LE_T1_EMORE 0x10 /* Error: more than one retry needed */ | |
159 | #define LE_T1_EONE 0x08 /* Error: one retry needed */ | |
160 | #define LE_T1_EDEF 0x04 /* Error: deferred */ | |
161 | #define LE_T1_SOP 0x02 /* Start of packet */ | |
162 | #define LE_T1_EOP 0x01 /* End of packet */ | |
163 | #define LE_T1_POK 0x03 /* Packet is complete: SOP + EOP */ | |
164 | ||
165 | #define LE_T3_BUF 0x8000 /* Buffer error */ | |
166 | #define LE_T3_UFL 0x4000 /* Error underflow */ | |
167 | #define LE_T3_LCOL 0x1000 /* Error late collision */ | |
168 | #define LE_T3_CLOS 0x0800 /* Error carrier loss */ | |
169 | #define LE_T3_RTY 0x0400 /* Error retry */ | |
170 | #define LE_T3_TDR 0x03ff /* Time Domain Reflectometry counter */ | |
171 | ||
172 | #define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS)) | |
173 | #define TX_RING_MOD_MASK (TX_RING_SIZE - 1) | |
174 | #define TX_RING_LEN_BITS ((LANCE_LOG_TX_BUFFERS) << 29) | |
175 | #define TX_NEXT(__x) (((__x)+1) & TX_RING_MOD_MASK) | |
176 | ||
177 | #define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS)) | |
178 | #define RX_RING_MOD_MASK (RX_RING_SIZE - 1) | |
179 | #define RX_RING_LEN_BITS ((LANCE_LOG_RX_BUFFERS) << 29) | |
180 | #define RX_NEXT(__x) (((__x)+1) & RX_RING_MOD_MASK) | |
181 | ||
182 | #define PKT_BUF_SZ 1544 | |
183 | #define RX_BUFF_SIZE PKT_BUF_SZ | |
184 | #define TX_BUFF_SIZE PKT_BUF_SZ | |
185 | ||
186 | struct lance_rx_desc { | |
187 | u16 rmd0; /* low address of packet */ | |
188 | u8 rmd1_bits; /* descriptor bits */ | |
189 | u8 rmd1_hadr; /* high address of packet */ | |
190 | s16 length; /* This length is 2s complement (negative)! | |
191 | * Buffer length | |
192 | */ | |
193 | u16 mblength; /* This is the actual number of bytes received */ | |
194 | }; | |
195 | ||
196 | struct lance_tx_desc { | |
197 | u16 tmd0; /* low address of packet */ | |
198 | u8 tmd1_bits; /* descriptor bits */ | |
199 | u8 tmd1_hadr; /* high address of packet */ | |
200 | s16 length; /* Length is 2s complement (negative)! */ | |
201 | u16 misc; | |
202 | }; | |
203 | ||
204 | /* The LANCE initialization block, described in databook. */ | |
205 | /* On the Sparc, this block should be on a DMA region */ | |
206 | struct lance_init_block { | |
207 | u16 mode; /* Pre-set mode (reg. 15) */ | |
208 | u8 phys_addr[6]; /* Physical ethernet address */ | |
209 | u32 filter[2]; /* Multicast filter. */ | |
210 | ||
211 | /* Receive and transmit ring base, along with extra bits. */ | |
212 | u16 rx_ptr; /* receive descriptor addr */ | |
213 | u16 rx_len; /* receive len and high addr */ | |
214 | u16 tx_ptr; /* transmit descriptor addr */ | |
215 | u16 tx_len; /* transmit len and high addr */ | |
216 | ||
217 | /* The Tx and Rx ring entries must aligned on 8-byte boundaries. */ | |
218 | struct lance_rx_desc brx_ring[RX_RING_SIZE]; | |
219 | struct lance_tx_desc btx_ring[TX_RING_SIZE]; | |
220 | ||
221 | u8 tx_buf [TX_RING_SIZE][TX_BUFF_SIZE]; | |
222 | u8 pad[2]; /* align rx_buf for copy_and_sum(). */ | |
223 | u8 rx_buf [RX_RING_SIZE][RX_BUFF_SIZE]; | |
224 | }; | |
225 | ||
226 | #define libdesc_offset(rt, elem) \ | |
227 | ((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem]))))) | |
228 | ||
229 | #define libbuff_offset(rt, elem) \ | |
230 | ((__u32)(((unsigned long)(&(((struct lance_init_block *)0)->rt[elem][0]))))) | |
231 | ||
232 | struct lance_private { | |
233 | void __iomem *lregs; /* Lance RAP/RDP regs. */ | |
234 | void __iomem *dregs; /* DMA controller regs. */ | |
235 | struct lance_init_block __iomem *init_block_iomem; | |
236 | struct lance_init_block *init_block_mem; | |
237 | ||
238 | spinlock_t lock; | |
239 | ||
240 | int rx_new, tx_new; | |
241 | int rx_old, tx_old; | |
242 | ||
243 | struct net_device_stats stats; | |
244 | struct sbus_dma *ledma; /* If set this points to ledma */ | |
245 | char tpe; /* cable-selection is TPE */ | |
246 | char auto_select; /* cable-selection by carrier */ | |
247 | char burst_sizes; /* ledma SBus burst sizes */ | |
248 | char pio_buffer; /* init block in PIO space? */ | |
249 | ||
250 | unsigned short busmaster_regval; | |
251 | ||
252 | void (*init_ring)(struct net_device *); | |
253 | void (*rx)(struct net_device *); | |
254 | void (*tx)(struct net_device *); | |
255 | ||
256 | char *name; | |
257 | dma_addr_t init_block_dvma; | |
258 | struct net_device *dev; /* Backpointer */ | |
259 | struct lance_private *next_module; | |
260 | struct sbus_dev *sdev; | |
261 | struct timer_list multicast_timer; | |
262 | }; | |
263 | ||
264 | #define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ | |
265 | lp->tx_old+TX_RING_MOD_MASK-lp->tx_new:\ | |
266 | lp->tx_old - lp->tx_new-1) | |
267 | ||
268 | /* Lance registers. */ | |
269 | #define RDP 0x00UL /* register data port */ | |
270 | #define RAP 0x02UL /* register address port */ | |
271 | #define LANCE_REG_SIZE 0x04UL | |
272 | ||
273 | #define STOP_LANCE(__lp) \ | |
274 | do { void __iomem *__base = (__lp)->lregs; \ | |
275 | sbus_writew(LE_CSR0, __base + RAP); \ | |
276 | sbus_writew(LE_C0_STOP, __base + RDP); \ | |
277 | } while (0) | |
278 | ||
279 | int sparc_lance_debug = 2; | |
280 | ||
281 | /* The Lance uses 24 bit addresses */ | |
282 | /* On the Sun4c the DVMA will provide the remaining bytes for us */ | |
283 | /* On the Sun4m we have to instruct the ledma to provide them */ | |
284 | /* Even worse, on scsi/ether SBUS cards, the init block and the | |
285 | * transmit/receive buffers are addresses as offsets from absolute | |
286 | * zero on the lebuffer PIO area. -DaveM | |
287 | */ | |
288 | ||
289 | #define LANCE_ADDR(x) ((long)(x) & ~0xff000000) | |
290 | ||
291 | static struct lance_private *root_lance_dev; | |
292 | ||
293 | /* Load the CSR registers */ | |
294 | static void load_csrs(struct lance_private *lp) | |
295 | { | |
296 | u32 leptr; | |
297 | ||
298 | if (lp->pio_buffer) | |
299 | leptr = 0; | |
300 | else | |
301 | leptr = LANCE_ADDR(lp->init_block_dvma); | |
302 | ||
303 | sbus_writew(LE_CSR1, lp->lregs + RAP); | |
304 | sbus_writew(leptr & 0xffff, lp->lregs + RDP); | |
305 | sbus_writew(LE_CSR2, lp->lregs + RAP); | |
306 | sbus_writew(leptr >> 16, lp->lregs + RDP); | |
307 | sbus_writew(LE_CSR3, lp->lregs + RAP); | |
308 | sbus_writew(lp->busmaster_regval, lp->lregs + RDP); | |
309 | ||
310 | /* Point back to csr0 */ | |
311 | sbus_writew(LE_CSR0, lp->lregs + RAP); | |
312 | } | |
313 | ||
314 | /* Setup the Lance Rx and Tx rings */ | |
315 | static void lance_init_ring_dvma(struct net_device *dev) | |
316 | { | |
317 | struct lance_private *lp = netdev_priv(dev); | |
318 | struct lance_init_block *ib = lp->init_block_mem; | |
319 | dma_addr_t aib = lp->init_block_dvma; | |
320 | __u32 leptr; | |
321 | int i; | |
322 | ||
323 | /* Lock out other processes while setting up hardware */ | |
324 | netif_stop_queue(dev); | |
325 | lp->rx_new = lp->tx_new = 0; | |
326 | lp->rx_old = lp->tx_old = 0; | |
327 | ||
328 | /* Copy the ethernet address to the lance init block | |
329 | * Note that on the sparc you need to swap the ethernet address. | |
330 | */ | |
331 | ib->phys_addr [0] = dev->dev_addr [1]; | |
332 | ib->phys_addr [1] = dev->dev_addr [0]; | |
333 | ib->phys_addr [2] = dev->dev_addr [3]; | |
334 | ib->phys_addr [3] = dev->dev_addr [2]; | |
335 | ib->phys_addr [4] = dev->dev_addr [5]; | |
336 | ib->phys_addr [5] = dev->dev_addr [4]; | |
337 | ||
338 | /* Setup the Tx ring entries */ | |
339 | for (i = 0; i <= TX_RING_SIZE; i++) { | |
340 | leptr = LANCE_ADDR(aib + libbuff_offset(tx_buf, i)); | |
341 | ib->btx_ring [i].tmd0 = leptr; | |
342 | ib->btx_ring [i].tmd1_hadr = leptr >> 16; | |
343 | ib->btx_ring [i].tmd1_bits = 0; | |
344 | ib->btx_ring [i].length = 0xf000; /* The ones required by tmd2 */ | |
345 | ib->btx_ring [i].misc = 0; | |
346 | } | |
347 | ||
348 | /* Setup the Rx ring entries */ | |
349 | for (i = 0; i < RX_RING_SIZE; i++) { | |
350 | leptr = LANCE_ADDR(aib + libbuff_offset(rx_buf, i)); | |
351 | ||
352 | ib->brx_ring [i].rmd0 = leptr; | |
353 | ib->brx_ring [i].rmd1_hadr = leptr >> 16; | |
354 | ib->brx_ring [i].rmd1_bits = LE_R1_OWN; | |
355 | ib->brx_ring [i].length = -RX_BUFF_SIZE | 0xf000; | |
356 | ib->brx_ring [i].mblength = 0; | |
357 | } | |
358 | ||
359 | /* Setup the initialization block */ | |
360 | ||
361 | /* Setup rx descriptor pointer */ | |
362 | leptr = LANCE_ADDR(aib + libdesc_offset(brx_ring, 0)); | |
363 | ib->rx_len = (LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16); | |
364 | ib->rx_ptr = leptr; | |
365 | ||
366 | /* Setup tx descriptor pointer */ | |
367 | leptr = LANCE_ADDR(aib + libdesc_offset(btx_ring, 0)); | |
368 | ib->tx_len = (LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16); | |
369 | ib->tx_ptr = leptr; | |
370 | } | |
371 | ||
372 | static void lance_init_ring_pio(struct net_device *dev) | |
373 | { | |
374 | struct lance_private *lp = netdev_priv(dev); | |
375 | struct lance_init_block __iomem *ib = lp->init_block_iomem; | |
376 | u32 leptr; | |
377 | int i; | |
378 | ||
379 | /* Lock out other processes while setting up hardware */ | |
380 | netif_stop_queue(dev); | |
381 | lp->rx_new = lp->tx_new = 0; | |
382 | lp->rx_old = lp->tx_old = 0; | |
383 | ||
384 | /* Copy the ethernet address to the lance init block | |
385 | * Note that on the sparc you need to swap the ethernet address. | |
386 | */ | |
387 | sbus_writeb(dev->dev_addr[1], &ib->phys_addr[0]); | |
388 | sbus_writeb(dev->dev_addr[0], &ib->phys_addr[1]); | |
389 | sbus_writeb(dev->dev_addr[3], &ib->phys_addr[2]); | |
390 | sbus_writeb(dev->dev_addr[2], &ib->phys_addr[3]); | |
391 | sbus_writeb(dev->dev_addr[5], &ib->phys_addr[4]); | |
392 | sbus_writeb(dev->dev_addr[4], &ib->phys_addr[5]); | |
393 | ||
394 | /* Setup the Tx ring entries */ | |
395 | for (i = 0; i <= TX_RING_SIZE; i++) { | |
396 | leptr = libbuff_offset(tx_buf, i); | |
397 | sbus_writew(leptr, &ib->btx_ring [i].tmd0); | |
398 | sbus_writeb(leptr >> 16,&ib->btx_ring [i].tmd1_hadr); | |
399 | sbus_writeb(0, &ib->btx_ring [i].tmd1_bits); | |
400 | ||
401 | /* The ones required by tmd2 */ | |
402 | sbus_writew(0xf000, &ib->btx_ring [i].length); | |
403 | sbus_writew(0, &ib->btx_ring [i].misc); | |
404 | } | |
405 | ||
406 | /* Setup the Rx ring entries */ | |
407 | for (i = 0; i < RX_RING_SIZE; i++) { | |
408 | leptr = libbuff_offset(rx_buf, i); | |
409 | ||
410 | sbus_writew(leptr, &ib->brx_ring [i].rmd0); | |
411 | sbus_writeb(leptr >> 16,&ib->brx_ring [i].rmd1_hadr); | |
412 | sbus_writeb(LE_R1_OWN, &ib->brx_ring [i].rmd1_bits); | |
413 | sbus_writew(-RX_BUFF_SIZE|0xf000, | |
414 | &ib->brx_ring [i].length); | |
415 | sbus_writew(0, &ib->brx_ring [i].mblength); | |
416 | } | |
417 | ||
418 | /* Setup the initialization block */ | |
419 | ||
420 | /* Setup rx descriptor pointer */ | |
421 | leptr = libdesc_offset(brx_ring, 0); | |
422 | sbus_writew((LANCE_LOG_RX_BUFFERS << 13) | (leptr >> 16), | |
423 | &ib->rx_len); | |
424 | sbus_writew(leptr, &ib->rx_ptr); | |
425 | ||
426 | /* Setup tx descriptor pointer */ | |
427 | leptr = libdesc_offset(btx_ring, 0); | |
428 | sbus_writew((LANCE_LOG_TX_BUFFERS << 13) | (leptr >> 16), | |
429 | &ib->tx_len); | |
430 | sbus_writew(leptr, &ib->tx_ptr); | |
431 | } | |
432 | ||
433 | static void init_restart_ledma(struct lance_private *lp) | |
434 | { | |
435 | u32 csr = sbus_readl(lp->dregs + DMA_CSR); | |
436 | ||
437 | if (!(csr & DMA_HNDL_ERROR)) { | |
438 | /* E-Cache draining */ | |
439 | while (sbus_readl(lp->dregs + DMA_CSR) & DMA_FIFO_ISDRAIN) | |
440 | barrier(); | |
441 | } | |
442 | ||
443 | csr = sbus_readl(lp->dregs + DMA_CSR); | |
444 | csr &= ~DMA_E_BURSTS; | |
445 | if (lp->burst_sizes & DMA_BURST32) | |
446 | csr |= DMA_E_BURST32; | |
447 | else | |
448 | csr |= DMA_E_BURST16; | |
449 | ||
450 | csr |= (DMA_DSBL_RD_DRN | DMA_DSBL_WR_INV | DMA_FIFO_INV); | |
451 | ||
452 | if (lp->tpe) | |
453 | csr |= DMA_EN_ENETAUI; | |
454 | else | |
455 | csr &= ~DMA_EN_ENETAUI; | |
456 | udelay(20); | |
457 | sbus_writel(csr, lp->dregs + DMA_CSR); | |
458 | udelay(200); | |
459 | } | |
460 | ||
461 | static int init_restart_lance(struct lance_private *lp) | |
462 | { | |
463 | u16 regval = 0; | |
464 | int i; | |
465 | ||
466 | if (lp->dregs) | |
467 | init_restart_ledma(lp); | |
468 | ||
469 | sbus_writew(LE_CSR0, lp->lregs + RAP); | |
470 | sbus_writew(LE_C0_INIT, lp->lregs + RDP); | |
471 | ||
472 | /* Wait for the lance to complete initialization */ | |
473 | for (i = 0; i < 100; i++) { | |
474 | regval = sbus_readw(lp->lregs + RDP); | |
475 | ||
476 | if (regval & (LE_C0_ERR | LE_C0_IDON)) | |
477 | break; | |
478 | barrier(); | |
479 | } | |
480 | if (i == 100 || (regval & LE_C0_ERR)) { | |
481 | printk(KERN_ERR "LANCE unopened after %d ticks, csr0=%4.4x.\n", | |
482 | i, regval); | |
483 | if (lp->dregs) | |
484 | printk("dcsr=%8.8x\n", sbus_readl(lp->dregs + DMA_CSR)); | |
485 | return -1; | |
486 | } | |
487 | ||
488 | /* Clear IDON by writing a "1", enable interrupts and start lance */ | |
489 | sbus_writew(LE_C0_IDON, lp->lregs + RDP); | |
490 | sbus_writew(LE_C0_INEA | LE_C0_STRT, lp->lregs + RDP); | |
491 | ||
492 | if (lp->dregs) { | |
493 | u32 csr = sbus_readl(lp->dregs + DMA_CSR); | |
494 | ||
495 | csr |= DMA_INT_ENAB; | |
496 | sbus_writel(csr, lp->dregs + DMA_CSR); | |
497 | } | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | static void lance_rx_dvma(struct net_device *dev) | |
503 | { | |
504 | struct lance_private *lp = netdev_priv(dev); | |
505 | struct lance_init_block *ib = lp->init_block_mem; | |
506 | struct lance_rx_desc *rd; | |
507 | u8 bits; | |
508 | int len, entry = lp->rx_new; | |
509 | struct sk_buff *skb; | |
510 | ||
511 | for (rd = &ib->brx_ring [entry]; | |
512 | !((bits = rd->rmd1_bits) & LE_R1_OWN); | |
513 | rd = &ib->brx_ring [entry]) { | |
514 | ||
515 | /* We got an incomplete frame? */ | |
516 | if ((bits & LE_R1_POK) != LE_R1_POK) { | |
517 | lp->stats.rx_over_errors++; | |
518 | lp->stats.rx_errors++; | |
519 | } else if (bits & LE_R1_ERR) { | |
520 | /* Count only the end frame as a rx error, | |
521 | * not the beginning | |
522 | */ | |
523 | if (bits & LE_R1_BUF) lp->stats.rx_fifo_errors++; | |
524 | if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++; | |
525 | if (bits & LE_R1_OFL) lp->stats.rx_over_errors++; | |
526 | if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++; | |
527 | if (bits & LE_R1_EOP) lp->stats.rx_errors++; | |
528 | } else { | |
529 | len = (rd->mblength & 0xfff) - 4; | |
530 | skb = dev_alloc_skb(len + 2); | |
531 | ||
532 | if (skb == NULL) { | |
533 | printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n", | |
534 | dev->name); | |
535 | lp->stats.rx_dropped++; | |
536 | rd->mblength = 0; | |
537 | rd->rmd1_bits = LE_R1_OWN; | |
538 | lp->rx_new = RX_NEXT(entry); | |
539 | return; | |
540 | } | |
541 | ||
542 | lp->stats.rx_bytes += len; | |
543 | ||
544 | skb->dev = dev; | |
545 | skb_reserve(skb, 2); /* 16 byte align */ | |
546 | skb_put(skb, len); /* make room */ | |
547 | eth_copy_and_sum(skb, | |
548 | (unsigned char *)&(ib->rx_buf [entry][0]), | |
549 | len, 0); | |
550 | skb->protocol = eth_type_trans(skb, dev); | |
551 | netif_rx(skb); | |
552 | dev->last_rx = jiffies; | |
553 | lp->stats.rx_packets++; | |
554 | } | |
555 | ||
556 | /* Return the packet to the pool */ | |
557 | rd->mblength = 0; | |
558 | rd->rmd1_bits = LE_R1_OWN; | |
559 | entry = RX_NEXT(entry); | |
560 | } | |
561 | ||
562 | lp->rx_new = entry; | |
563 | } | |
564 | ||
565 | static void lance_tx_dvma(struct net_device *dev) | |
566 | { | |
567 | struct lance_private *lp = netdev_priv(dev); | |
568 | struct lance_init_block *ib = lp->init_block_mem; | |
569 | int i, j; | |
570 | ||
571 | spin_lock(&lp->lock); | |
572 | ||
573 | j = lp->tx_old; | |
574 | for (i = j; i != lp->tx_new; i = j) { | |
575 | struct lance_tx_desc *td = &ib->btx_ring [i]; | |
576 | u8 bits = td->tmd1_bits; | |
577 | ||
578 | /* If we hit a packet not owned by us, stop */ | |
579 | if (bits & LE_T1_OWN) | |
580 | break; | |
581 | ||
582 | if (bits & LE_T1_ERR) { | |
583 | u16 status = td->misc; | |
584 | ||
585 | lp->stats.tx_errors++; | |
586 | if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++; | |
587 | if (status & LE_T3_LCOL) lp->stats.tx_window_errors++; | |
588 | ||
589 | if (status & LE_T3_CLOS) { | |
590 | lp->stats.tx_carrier_errors++; | |
591 | if (lp->auto_select) { | |
592 | lp->tpe = 1 - lp->tpe; | |
593 | printk(KERN_NOTICE "%s: Carrier Lost, trying %s\n", | |
594 | dev->name, lp->tpe?"TPE":"AUI"); | |
595 | STOP_LANCE(lp); | |
596 | lp->init_ring(dev); | |
597 | load_csrs(lp); | |
598 | init_restart_lance(lp); | |
599 | goto out; | |
600 | } | |
601 | } | |
602 | ||
603 | /* Buffer errors and underflows turn off the | |
604 | * transmitter, restart the adapter. | |
605 | */ | |
606 | if (status & (LE_T3_BUF|LE_T3_UFL)) { | |
607 | lp->stats.tx_fifo_errors++; | |
608 | ||
609 | printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restarting\n", | |
610 | dev->name); | |
611 | STOP_LANCE(lp); | |
612 | lp->init_ring(dev); | |
613 | load_csrs(lp); | |
614 | init_restart_lance(lp); | |
615 | goto out; | |
616 | } | |
617 | } else if ((bits & LE_T1_POK) == LE_T1_POK) { | |
618 | /* | |
619 | * So we don't count the packet more than once. | |
620 | */ | |
621 | td->tmd1_bits = bits & ~(LE_T1_POK); | |
622 | ||
623 | /* One collision before packet was sent. */ | |
624 | if (bits & LE_T1_EONE) | |
625 | lp->stats.collisions++; | |
626 | ||
627 | /* More than one collision, be optimistic. */ | |
628 | if (bits & LE_T1_EMORE) | |
629 | lp->stats.collisions += 2; | |
630 | ||
631 | lp->stats.tx_packets++; | |
632 | } | |
633 | ||
634 | j = TX_NEXT(j); | |
635 | } | |
636 | lp->tx_old = j; | |
637 | out: | |
638 | if (netif_queue_stopped(dev) && | |
639 | TX_BUFFS_AVAIL > 0) | |
640 | netif_wake_queue(dev); | |
641 | ||
642 | spin_unlock(&lp->lock); | |
643 | } | |
644 | ||
645 | static void lance_piocopy_to_skb(struct sk_buff *skb, void __iomem *piobuf, int len) | |
646 | { | |
647 | u16 *p16 = (u16 *) skb->data; | |
648 | u32 *p32; | |
649 | u8 *p8; | |
650 | void __iomem *pbuf = piobuf; | |
651 | ||
652 | /* We know here that both src and dest are on a 16bit boundary. */ | |
653 | *p16++ = sbus_readw(pbuf); | |
654 | p32 = (u32 *) p16; | |
655 | pbuf += 2; | |
656 | len -= 2; | |
657 | ||
658 | while (len >= 4) { | |
659 | *p32++ = sbus_readl(pbuf); | |
660 | pbuf += 4; | |
661 | len -= 4; | |
662 | } | |
663 | p8 = (u8 *) p32; | |
664 | if (len >= 2) { | |
665 | p16 = (u16 *) p32; | |
666 | *p16++ = sbus_readw(pbuf); | |
667 | pbuf += 2; | |
668 | len -= 2; | |
669 | p8 = (u8 *) p16; | |
670 | } | |
671 | if (len >= 1) | |
672 | *p8 = sbus_readb(pbuf); | |
673 | } | |
674 | ||
675 | static void lance_rx_pio(struct net_device *dev) | |
676 | { | |
677 | struct lance_private *lp = netdev_priv(dev); | |
678 | struct lance_init_block __iomem *ib = lp->init_block_iomem; | |
679 | struct lance_rx_desc __iomem *rd; | |
680 | unsigned char bits; | |
681 | int len, entry; | |
682 | struct sk_buff *skb; | |
683 | ||
684 | entry = lp->rx_new; | |
685 | for (rd = &ib->brx_ring [entry]; | |
686 | !((bits = sbus_readb(&rd->rmd1_bits)) & LE_R1_OWN); | |
687 | rd = &ib->brx_ring [entry]) { | |
688 | ||
689 | /* We got an incomplete frame? */ | |
690 | if ((bits & LE_R1_POK) != LE_R1_POK) { | |
691 | lp->stats.rx_over_errors++; | |
692 | lp->stats.rx_errors++; | |
693 | } else if (bits & LE_R1_ERR) { | |
694 | /* Count only the end frame as a rx error, | |
695 | * not the beginning | |
696 | */ | |
697 | if (bits & LE_R1_BUF) lp->stats.rx_fifo_errors++; | |
698 | if (bits & LE_R1_CRC) lp->stats.rx_crc_errors++; | |
699 | if (bits & LE_R1_OFL) lp->stats.rx_over_errors++; | |
700 | if (bits & LE_R1_FRA) lp->stats.rx_frame_errors++; | |
701 | if (bits & LE_R1_EOP) lp->stats.rx_errors++; | |
702 | } else { | |
703 | len = (sbus_readw(&rd->mblength) & 0xfff) - 4; | |
704 | skb = dev_alloc_skb(len + 2); | |
705 | ||
706 | if (skb == NULL) { | |
707 | printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n", | |
708 | dev->name); | |
709 | lp->stats.rx_dropped++; | |
710 | sbus_writew(0, &rd->mblength); | |
711 | sbus_writeb(LE_R1_OWN, &rd->rmd1_bits); | |
712 | lp->rx_new = RX_NEXT(entry); | |
713 | return; | |
714 | } | |
715 | ||
716 | lp->stats.rx_bytes += len; | |
717 | ||
718 | skb->dev = dev; | |
719 | skb_reserve (skb, 2); /* 16 byte align */ | |
720 | skb_put(skb, len); /* make room */ | |
721 | lance_piocopy_to_skb(skb, &(ib->rx_buf[entry][0]), len); | |
722 | skb->protocol = eth_type_trans(skb, dev); | |
723 | netif_rx(skb); | |
724 | dev->last_rx = jiffies; | |
725 | lp->stats.rx_packets++; | |
726 | } | |
727 | ||
728 | /* Return the packet to the pool */ | |
729 | sbus_writew(0, &rd->mblength); | |
730 | sbus_writeb(LE_R1_OWN, &rd->rmd1_bits); | |
731 | entry = RX_NEXT(entry); | |
732 | } | |
733 | ||
734 | lp->rx_new = entry; | |
735 | } | |
736 | ||
737 | static void lance_tx_pio(struct net_device *dev) | |
738 | { | |
739 | struct lance_private *lp = netdev_priv(dev); | |
740 | struct lance_init_block __iomem *ib = lp->init_block_iomem; | |
741 | int i, j; | |
742 | ||
743 | spin_lock(&lp->lock); | |
744 | ||
745 | j = lp->tx_old; | |
746 | for (i = j; i != lp->tx_new; i = j) { | |
747 | struct lance_tx_desc __iomem *td = &ib->btx_ring [i]; | |
748 | u8 bits = sbus_readb(&td->tmd1_bits); | |
749 | ||
750 | /* If we hit a packet not owned by us, stop */ | |
751 | if (bits & LE_T1_OWN) | |
752 | break; | |
753 | ||
754 | if (bits & LE_T1_ERR) { | |
755 | u16 status = sbus_readw(&td->misc); | |
756 | ||
757 | lp->stats.tx_errors++; | |
758 | if (status & LE_T3_RTY) lp->stats.tx_aborted_errors++; | |
759 | if (status & LE_T3_LCOL) lp->stats.tx_window_errors++; | |
760 | ||
761 | if (status & LE_T3_CLOS) { | |
762 | lp->stats.tx_carrier_errors++; | |
763 | if (lp->auto_select) { | |
764 | lp->tpe = 1 - lp->tpe; | |
765 | printk(KERN_NOTICE "%s: Carrier Lost, trying %s\n", | |
766 | dev->name, lp->tpe?"TPE":"AUI"); | |
767 | STOP_LANCE(lp); | |
768 | lp->init_ring(dev); | |
769 | load_csrs(lp); | |
770 | init_restart_lance(lp); | |
771 | goto out; | |
772 | } | |
773 | } | |
774 | ||
775 | /* Buffer errors and underflows turn off the | |
776 | * transmitter, restart the adapter. | |
777 | */ | |
778 | if (status & (LE_T3_BUF|LE_T3_UFL)) { | |
779 | lp->stats.tx_fifo_errors++; | |
780 | ||
781 | printk(KERN_ERR "%s: Tx: ERR_BUF|ERR_UFL, restarting\n", | |
782 | dev->name); | |
783 | STOP_LANCE(lp); | |
784 | lp->init_ring(dev); | |
785 | load_csrs(lp); | |
786 | init_restart_lance(lp); | |
787 | goto out; | |
788 | } | |
789 | } else if ((bits & LE_T1_POK) == LE_T1_POK) { | |
790 | /* | |
791 | * So we don't count the packet more than once. | |
792 | */ | |
793 | sbus_writeb(bits & ~(LE_T1_POK), &td->tmd1_bits); | |
794 | ||
795 | /* One collision before packet was sent. */ | |
796 | if (bits & LE_T1_EONE) | |
797 | lp->stats.collisions++; | |
798 | ||
799 | /* More than one collision, be optimistic. */ | |
800 | if (bits & LE_T1_EMORE) | |
801 | lp->stats.collisions += 2; | |
802 | ||
803 | lp->stats.tx_packets++; | |
804 | } | |
805 | ||
806 | j = TX_NEXT(j); | |
807 | } | |
808 | lp->tx_old = j; | |
809 | ||
810 | if (netif_queue_stopped(dev) && | |
811 | TX_BUFFS_AVAIL > 0) | |
812 | netif_wake_queue(dev); | |
813 | out: | |
814 | spin_unlock(&lp->lock); | |
815 | } | |
816 | ||
817 | static irqreturn_t lance_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
818 | { | |
819 | struct net_device *dev = (struct net_device *)dev_id; | |
820 | struct lance_private *lp = netdev_priv(dev); | |
821 | int csr0; | |
822 | ||
823 | sbus_writew(LE_CSR0, lp->lregs + RAP); | |
824 | csr0 = sbus_readw(lp->lregs + RDP); | |
825 | ||
826 | /* Acknowledge all the interrupt sources ASAP */ | |
827 | sbus_writew(csr0 & (LE_C0_INTR | LE_C0_TINT | LE_C0_RINT), | |
828 | lp->lregs + RDP); | |
829 | ||
830 | if ((csr0 & LE_C0_ERR) != 0) { | |
831 | /* Clear the error condition */ | |
832 | sbus_writew((LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | | |
833 | LE_C0_CERR | LE_C0_MERR), | |
834 | lp->lregs + RDP); | |
835 | } | |
836 | ||
837 | if (csr0 & LE_C0_RINT) | |
838 | lp->rx(dev); | |
839 | ||
840 | if (csr0 & LE_C0_TINT) | |
841 | lp->tx(dev); | |
842 | ||
843 | if (csr0 & LE_C0_BABL) | |
844 | lp->stats.tx_errors++; | |
845 | ||
846 | if (csr0 & LE_C0_MISS) | |
847 | lp->stats.rx_errors++; | |
848 | ||
849 | if (csr0 & LE_C0_MERR) { | |
850 | if (lp->dregs) { | |
851 | u32 addr = sbus_readl(lp->dregs + DMA_ADDR); | |
852 | ||
853 | printk(KERN_ERR "%s: Memory error, status %04x, addr %06x\n", | |
854 | dev->name, csr0, addr & 0xffffff); | |
855 | } else { | |
856 | printk(KERN_ERR "%s: Memory error, status %04x\n", | |
857 | dev->name, csr0); | |
858 | } | |
859 | ||
860 | sbus_writew(LE_C0_STOP, lp->lregs + RDP); | |
861 | ||
862 | if (lp->dregs) { | |
863 | u32 dma_csr = sbus_readl(lp->dregs + DMA_CSR); | |
864 | ||
865 | dma_csr |= DMA_FIFO_INV; | |
866 | sbus_writel(dma_csr, lp->dregs + DMA_CSR); | |
867 | } | |
868 | ||
869 | lp->init_ring(dev); | |
870 | load_csrs(lp); | |
871 | init_restart_lance(lp); | |
872 | netif_wake_queue(dev); | |
873 | } | |
874 | ||
875 | sbus_writew(LE_C0_INEA, lp->lregs + RDP); | |
876 | ||
877 | return IRQ_HANDLED; | |
878 | } | |
879 | ||
880 | /* Build a fake network packet and send it to ourselves. */ | |
881 | static void build_fake_packet(struct lance_private *lp) | |
882 | { | |
883 | struct net_device *dev = lp->dev; | |
884 | int i, entry; | |
885 | ||
886 | entry = lp->tx_new & TX_RING_MOD_MASK; | |
887 | if (lp->pio_buffer) { | |
888 | struct lance_init_block __iomem *ib = lp->init_block_iomem; | |
889 | u16 __iomem *packet = (u16 __iomem *) &(ib->tx_buf[entry][0]); | |
890 | struct ethhdr __iomem *eth = (struct ethhdr __iomem *) packet; | |
891 | for (i = 0; i < (ETH_ZLEN / sizeof(u16)); i++) | |
892 | sbus_writew(0, &packet[i]); | |
893 | for (i = 0; i < 6; i++) { | |
894 | sbus_writeb(dev->dev_addr[i], ð->h_dest[i]); | |
895 | sbus_writeb(dev->dev_addr[i], ð->h_source[i]); | |
896 | } | |
897 | sbus_writew((-ETH_ZLEN) | 0xf000, &ib->btx_ring[entry].length); | |
898 | sbus_writew(0, &ib->btx_ring[entry].misc); | |
899 | sbus_writeb(LE_T1_POK|LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits); | |
900 | } else { | |
901 | struct lance_init_block *ib = lp->init_block_mem; | |
902 | u16 *packet = (u16 *) &(ib->tx_buf[entry][0]); | |
903 | struct ethhdr *eth = (struct ethhdr *) packet; | |
904 | memset(packet, 0, ETH_ZLEN); | |
905 | for (i = 0; i < 6; i++) { | |
906 | eth->h_dest[i] = dev->dev_addr[i]; | |
907 | eth->h_source[i] = dev->dev_addr[i]; | |
908 | } | |
909 | ib->btx_ring[entry].length = (-ETH_ZLEN) | 0xf000; | |
910 | ib->btx_ring[entry].misc = 0; | |
911 | ib->btx_ring[entry].tmd1_bits = (LE_T1_POK|LE_T1_OWN); | |
912 | } | |
913 | lp->tx_new = TX_NEXT(entry); | |
914 | } | |
915 | ||
916 | struct net_device *last_dev; | |
917 | ||
918 | static int lance_open(struct net_device *dev) | |
919 | { | |
920 | struct lance_private *lp = netdev_priv(dev); | |
921 | int status = 0; | |
922 | ||
923 | last_dev = dev; | |
924 | ||
925 | STOP_LANCE(lp); | |
926 | ||
927 | if (request_irq(dev->irq, &lance_interrupt, SA_SHIRQ, | |
928 | lancestr, (void *) dev)) { | |
929 | printk(KERN_ERR "Lance: Can't get irq %s\n", __irq_itoa(dev->irq)); | |
930 | return -EAGAIN; | |
931 | } | |
932 | ||
933 | /* On the 4m, setup the ledma to provide the upper bits for buffers */ | |
934 | if (lp->dregs) { | |
935 | u32 regval = lp->init_block_dvma & 0xff000000; | |
936 | ||
937 | sbus_writel(regval, lp->dregs + DMA_TEST); | |
938 | } | |
939 | ||
940 | /* Set mode and clear multicast filter only at device open, | |
941 | * so that lance_init_ring() called at any error will not | |
942 | * forget multicast filters. | |
943 | * | |
944 | * BTW it is common bug in all lance drivers! --ANK | |
945 | */ | |
946 | if (lp->pio_buffer) { | |
947 | struct lance_init_block __iomem *ib = lp->init_block_iomem; | |
948 | sbus_writew(0, &ib->mode); | |
949 | sbus_writel(0, &ib->filter[0]); | |
950 | sbus_writel(0, &ib->filter[1]); | |
951 | } else { | |
952 | struct lance_init_block *ib = lp->init_block_mem; | |
953 | ib->mode = 0; | |
954 | ib->filter [0] = 0; | |
955 | ib->filter [1] = 0; | |
956 | } | |
957 | ||
958 | lp->init_ring(dev); | |
959 | load_csrs(lp); | |
960 | ||
961 | netif_start_queue(dev); | |
962 | ||
963 | status = init_restart_lance(lp); | |
964 | if (!status && lp->auto_select) { | |
965 | build_fake_packet(lp); | |
966 | sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP); | |
967 | } | |
968 | ||
969 | return status; | |
970 | } | |
971 | ||
972 | static int lance_close(struct net_device *dev) | |
973 | { | |
974 | struct lance_private *lp = netdev_priv(dev); | |
975 | ||
976 | netif_stop_queue(dev); | |
977 | del_timer_sync(&lp->multicast_timer); | |
978 | ||
979 | STOP_LANCE(lp); | |
980 | ||
981 | free_irq(dev->irq, (void *) dev); | |
982 | return 0; | |
983 | } | |
984 | ||
985 | static int lance_reset(struct net_device *dev) | |
986 | { | |
987 | struct lance_private *lp = netdev_priv(dev); | |
988 | int status; | |
989 | ||
990 | STOP_LANCE(lp); | |
991 | ||
992 | /* On the 4m, reset the dma too */ | |
993 | if (lp->dregs) { | |
994 | u32 csr, addr; | |
995 | ||
996 | printk(KERN_ERR "resetting ledma\n"); | |
997 | csr = sbus_readl(lp->dregs + DMA_CSR); | |
998 | sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR); | |
999 | udelay(200); | |
1000 | sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR); | |
1001 | ||
1002 | addr = lp->init_block_dvma & 0xff000000; | |
1003 | sbus_writel(addr, lp->dregs + DMA_TEST); | |
1004 | } | |
1005 | lp->init_ring(dev); | |
1006 | load_csrs(lp); | |
1007 | dev->trans_start = jiffies; | |
1008 | status = init_restart_lance(lp); | |
1009 | return status; | |
1010 | } | |
1011 | ||
1012 | static void lance_piocopy_from_skb(void __iomem *dest, unsigned char *src, int len) | |
1013 | { | |
1014 | void __iomem *piobuf = dest; | |
1015 | u32 *p32; | |
1016 | u16 *p16; | |
1017 | u8 *p8; | |
1018 | ||
1019 | switch ((unsigned long)src & 0x3) { | |
1020 | case 0: | |
1021 | p32 = (u32 *) src; | |
1022 | while (len >= 4) { | |
1023 | sbus_writel(*p32, piobuf); | |
1024 | p32++; | |
1025 | piobuf += 4; | |
1026 | len -= 4; | |
1027 | } | |
1028 | src = (char *) p32; | |
1029 | break; | |
1030 | case 1: | |
1031 | case 3: | |
1032 | p8 = (u8 *) src; | |
1033 | while (len >= 4) { | |
1034 | u32 val; | |
1035 | ||
1036 | val = p8[0] << 24; | |
1037 | val |= p8[1] << 16; | |
1038 | val |= p8[2] << 8; | |
1039 | val |= p8[3]; | |
1040 | sbus_writel(val, piobuf); | |
1041 | p8 += 4; | |
1042 | piobuf += 4; | |
1043 | len -= 4; | |
1044 | } | |
1045 | src = (char *) p8; | |
1046 | break; | |
1047 | case 2: | |
1048 | p16 = (u16 *) src; | |
1049 | while (len >= 4) { | |
1050 | u32 val = p16[0]<<16 | p16[1]; | |
1051 | sbus_writel(val, piobuf); | |
1052 | p16 += 2; | |
1053 | piobuf += 4; | |
1054 | len -= 4; | |
1055 | } | |
1056 | src = (char *) p16; | |
1057 | break; | |
1058 | }; | |
1059 | if (len >= 2) { | |
1060 | u16 val = src[0] << 8 | src[1]; | |
1061 | sbus_writew(val, piobuf); | |
1062 | src += 2; | |
1063 | piobuf += 2; | |
1064 | len -= 2; | |
1065 | } | |
1066 | if (len >= 1) | |
1067 | sbus_writeb(src[0], piobuf); | |
1068 | } | |
1069 | ||
1070 | static void lance_piozero(void __iomem *dest, int len) | |
1071 | { | |
1072 | void __iomem *piobuf = dest; | |
1073 | ||
1074 | if ((unsigned long)piobuf & 1) { | |
1075 | sbus_writeb(0, piobuf); | |
1076 | piobuf += 1; | |
1077 | len -= 1; | |
1078 | if (len == 0) | |
1079 | return; | |
1080 | } | |
1081 | if (len == 1) { | |
1082 | sbus_writeb(0, piobuf); | |
1083 | return; | |
1084 | } | |
1085 | if ((unsigned long)piobuf & 2) { | |
1086 | sbus_writew(0, piobuf); | |
1087 | piobuf += 2; | |
1088 | len -= 2; | |
1089 | if (len == 0) | |
1090 | return; | |
1091 | } | |
1092 | while (len >= 4) { | |
1093 | sbus_writel(0, piobuf); | |
1094 | piobuf += 4; | |
1095 | len -= 4; | |
1096 | } | |
1097 | if (len >= 2) { | |
1098 | sbus_writew(0, piobuf); | |
1099 | piobuf += 2; | |
1100 | len -= 2; | |
1101 | } | |
1102 | if (len >= 1) | |
1103 | sbus_writeb(0, piobuf); | |
1104 | } | |
1105 | ||
1106 | static void lance_tx_timeout(struct net_device *dev) | |
1107 | { | |
1108 | struct lance_private *lp = netdev_priv(dev); | |
1109 | ||
1110 | printk(KERN_ERR "%s: transmit timed out, status %04x, reset\n", | |
1111 | dev->name, sbus_readw(lp->lregs + RDP)); | |
1112 | lance_reset(dev); | |
1113 | netif_wake_queue(dev); | |
1114 | } | |
1115 | ||
1116 | static int lance_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1117 | { | |
1118 | struct lance_private *lp = netdev_priv(dev); | |
1119 | int entry, skblen, len; | |
1120 | ||
1121 | skblen = skb->len; | |
1122 | ||
1123 | len = (skblen <= ETH_ZLEN) ? ETH_ZLEN : skblen; | |
1124 | ||
1125 | spin_lock_irq(&lp->lock); | |
1126 | ||
1127 | lp->stats.tx_bytes += len; | |
1128 | ||
1129 | entry = lp->tx_new & TX_RING_MOD_MASK; | |
1130 | if (lp->pio_buffer) { | |
1131 | struct lance_init_block __iomem *ib = lp->init_block_iomem; | |
1132 | sbus_writew((-len) | 0xf000, &ib->btx_ring[entry].length); | |
1133 | sbus_writew(0, &ib->btx_ring[entry].misc); | |
1134 | lance_piocopy_from_skb(&ib->tx_buf[entry][0], skb->data, skblen); | |
1135 | if (len != skblen) | |
1136 | lance_piozero(&ib->tx_buf[entry][skblen], len - skblen); | |
1137 | sbus_writeb(LE_T1_POK | LE_T1_OWN, &ib->btx_ring[entry].tmd1_bits); | |
1138 | } else { | |
1139 | struct lance_init_block *ib = lp->init_block_mem; | |
1140 | ib->btx_ring [entry].length = (-len) | 0xf000; | |
1141 | ib->btx_ring [entry].misc = 0; | |
1142 | memcpy((char *)&ib->tx_buf [entry][0], skb->data, skblen); | |
1143 | if (len != skblen) | |
1144 | memset((char *) &ib->tx_buf [entry][skblen], 0, len - skblen); | |
1145 | ib->btx_ring [entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN); | |
1146 | } | |
1147 | ||
1148 | lp->tx_new = TX_NEXT(entry); | |
1149 | ||
1150 | if (TX_BUFFS_AVAIL <= 0) | |
1151 | netif_stop_queue(dev); | |
1152 | ||
1153 | /* Kick the lance: transmit now */ | |
1154 | sbus_writew(LE_C0_INEA | LE_C0_TDMD, lp->lregs + RDP); | |
1155 | ||
1156 | /* Read back CSR to invalidate the E-Cache. | |
1157 | * This is needed, because DMA_DSBL_WR_INV is set. | |
1158 | */ | |
1159 | if (lp->dregs) | |
1160 | sbus_readw(lp->lregs + RDP); | |
1161 | ||
1162 | spin_unlock_irq(&lp->lock); | |
1163 | ||
1164 | dev->trans_start = jiffies; | |
1165 | dev_kfree_skb(skb); | |
1166 | ||
1167 | return 0; | |
1168 | } | |
1169 | ||
1170 | static struct net_device_stats *lance_get_stats(struct net_device *dev) | |
1171 | { | |
1172 | struct lance_private *lp = netdev_priv(dev); | |
1173 | ||
1174 | return &lp->stats; | |
1175 | } | |
1176 | ||
1177 | /* taken from the depca driver */ | |
1178 | static void lance_load_multicast(struct net_device *dev) | |
1179 | { | |
1180 | struct lance_private *lp = netdev_priv(dev); | |
1181 | struct dev_mc_list *dmi = dev->mc_list; | |
1182 | char *addrs; | |
1183 | int i; | |
1184 | u32 crc; | |
1185 | u32 val; | |
1186 | ||
1187 | /* set all multicast bits */ | |
1188 | if (dev->flags & IFF_ALLMULTI) | |
1189 | val = ~0; | |
1190 | else | |
1191 | val = 0; | |
1192 | ||
1193 | if (lp->pio_buffer) { | |
1194 | struct lance_init_block __iomem *ib = lp->init_block_iomem; | |
1195 | sbus_writel(val, &ib->filter[0]); | |
1196 | sbus_writel(val, &ib->filter[1]); | |
1197 | } else { | |
1198 | struct lance_init_block *ib = lp->init_block_mem; | |
1199 | ib->filter [0] = val; | |
1200 | ib->filter [1] = val; | |
1201 | } | |
1202 | ||
1203 | if (dev->flags & IFF_ALLMULTI) | |
1204 | return; | |
1205 | ||
1206 | /* Add addresses */ | |
1207 | for (i = 0; i < dev->mc_count; i++) { | |
1208 | addrs = dmi->dmi_addr; | |
1209 | dmi = dmi->next; | |
1210 | ||
1211 | /* multicast address? */ | |
1212 | if (!(*addrs & 1)) | |
1213 | continue; | |
1214 | crc = ether_crc_le(6, addrs); | |
1215 | crc = crc >> 26; | |
1216 | if (lp->pio_buffer) { | |
1217 | struct lance_init_block __iomem *ib = lp->init_block_iomem; | |
1218 | u16 __iomem *mcast_table = (u16 __iomem *) &ib->filter; | |
1219 | u16 tmp = sbus_readw(&mcast_table[crc>>4]); | |
1220 | tmp |= 1 << (crc & 0xf); | |
1221 | sbus_writew(tmp, &mcast_table[crc>>4]); | |
1222 | } else { | |
1223 | struct lance_init_block *ib = lp->init_block_mem; | |
1224 | u16 *mcast_table = (u16 *) &ib->filter; | |
1225 | mcast_table [crc >> 4] |= 1 << (crc & 0xf); | |
1226 | } | |
1227 | } | |
1228 | } | |
1229 | ||
1230 | static void lance_set_multicast(struct net_device *dev) | |
1231 | { | |
1232 | struct lance_private *lp = netdev_priv(dev); | |
1233 | struct lance_init_block *ib_mem = lp->init_block_mem; | |
1234 | struct lance_init_block __iomem *ib_iomem = lp->init_block_iomem; | |
1235 | u16 mode; | |
1236 | ||
1237 | if (!netif_running(dev)) | |
1238 | return; | |
1239 | ||
1240 | if (lp->tx_old != lp->tx_new) { | |
1241 | mod_timer(&lp->multicast_timer, jiffies + 4); | |
1242 | netif_wake_queue(dev); | |
1243 | return; | |
1244 | } | |
1245 | ||
1246 | netif_stop_queue(dev); | |
1247 | ||
1248 | STOP_LANCE(lp); | |
1249 | lp->init_ring(dev); | |
1250 | ||
1251 | if (lp->pio_buffer) | |
1252 | mode = sbus_readw(&ib_iomem->mode); | |
1253 | else | |
1254 | mode = ib_mem->mode; | |
1255 | if (dev->flags & IFF_PROMISC) { | |
1256 | mode |= LE_MO_PROM; | |
1257 | if (lp->pio_buffer) | |
1258 | sbus_writew(mode, &ib_iomem->mode); | |
1259 | else | |
1260 | ib_mem->mode = mode; | |
1261 | } else { | |
1262 | mode &= ~LE_MO_PROM; | |
1263 | if (lp->pio_buffer) | |
1264 | sbus_writew(mode, &ib_iomem->mode); | |
1265 | else | |
1266 | ib_mem->mode = mode; | |
1267 | lance_load_multicast(dev); | |
1268 | } | |
1269 | load_csrs(lp); | |
1270 | init_restart_lance(lp); | |
1271 | netif_wake_queue(dev); | |
1272 | } | |
1273 | ||
1274 | static void lance_set_multicast_retry(unsigned long _opaque) | |
1275 | { | |
1276 | struct net_device *dev = (struct net_device *) _opaque; | |
1277 | ||
1278 | lance_set_multicast(dev); | |
1279 | } | |
1280 | ||
1281 | static void lance_free_hwresources(struct lance_private *lp) | |
1282 | { | |
1283 | if (lp->lregs) | |
1284 | sbus_iounmap(lp->lregs, LANCE_REG_SIZE); | |
1285 | if (lp->init_block_iomem) { | |
1286 | sbus_iounmap(lp->init_block_iomem, | |
1287 | sizeof(struct lance_init_block)); | |
1288 | } else if (lp->init_block_mem) { | |
1289 | sbus_free_consistent(lp->sdev, | |
1290 | sizeof(struct lance_init_block), | |
1291 | lp->init_block_mem, | |
1292 | lp->init_block_dvma); | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | /* Ethtool support... */ | |
1297 | static void sparc_lance_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
1298 | { | |
1299 | struct lance_private *lp = netdev_priv(dev); | |
1300 | ||
1301 | strcpy(info->driver, "sunlance"); | |
1302 | strcpy(info->version, "2.02"); | |
1303 | sprintf(info->bus_info, "SBUS:%d", | |
1304 | lp->sdev->slot); | |
1305 | } | |
1306 | ||
1307 | static u32 sparc_lance_get_link(struct net_device *dev) | |
1308 | { | |
1309 | /* We really do not keep track of this, but this | |
1310 | * is better than not reporting anything at all. | |
1311 | */ | |
1312 | return 1; | |
1313 | } | |
1314 | ||
1315 | static struct ethtool_ops sparc_lance_ethtool_ops = { | |
1316 | .get_drvinfo = sparc_lance_get_drvinfo, | |
1317 | .get_link = sparc_lance_get_link, | |
1318 | }; | |
1319 | ||
1320 | static int __init sparc_lance_init(struct sbus_dev *sdev, | |
1321 | struct sbus_dma *ledma, | |
1322 | struct sbus_dev *lebuffer) | |
1323 | { | |
1324 | static unsigned version_printed; | |
1325 | struct net_device *dev; | |
1326 | struct lance_private *lp; | |
1327 | int i; | |
1328 | ||
1329 | dev = alloc_etherdev(sizeof(struct lance_private) + 8); | |
1330 | if (!dev) | |
1331 | return -ENOMEM; | |
1332 | ||
1333 | lp = netdev_priv(dev); | |
1334 | memset(lp, 0, sizeof(*lp)); | |
1335 | ||
1336 | if (sparc_lance_debug && version_printed++ == 0) | |
1337 | printk (KERN_INFO "%s", version); | |
1338 | ||
1339 | spin_lock_init(&lp->lock); | |
1340 | ||
1341 | /* Copy the IDPROM ethernet address to the device structure, later we | |
1342 | * will copy the address in the device structure to the lance | |
1343 | * initialization block. | |
1344 | */ | |
1345 | for (i = 0; i < 6; i++) | |
1346 | dev->dev_addr[i] = idprom->id_ethaddr[i]; | |
1347 | ||
1348 | /* Get the IO region */ | |
1349 | lp->lregs = sbus_ioremap(&sdev->resource[0], 0, | |
1350 | LANCE_REG_SIZE, lancestr); | |
1351 | if (!lp->lregs) { | |
1352 | printk(KERN_ERR "SunLance: Cannot map registers.\n"); | |
1353 | goto fail; | |
1354 | } | |
1355 | ||
1356 | lp->sdev = sdev; | |
1357 | if (lebuffer) { | |
1358 | /* sanity check */ | |
1359 | if (lebuffer->resource[0].start & 7) { | |
1360 | printk(KERN_ERR "SunLance: ERROR: Rx and Tx rings not on even boundary.\n"); | |
1361 | goto fail; | |
1362 | } | |
1363 | lp->init_block_iomem = | |
1364 | sbus_ioremap(&lebuffer->resource[0], 0, | |
1365 | sizeof(struct lance_init_block), "lebuffer"); | |
1366 | if (!lp->init_block_iomem) { | |
1367 | printk(KERN_ERR "SunLance: Cannot map PIO buffer.\n"); | |
1368 | goto fail; | |
1369 | } | |
1370 | lp->init_block_dvma = 0; | |
1371 | lp->pio_buffer = 1; | |
1372 | lp->init_ring = lance_init_ring_pio; | |
1373 | lp->rx = lance_rx_pio; | |
1374 | lp->tx = lance_tx_pio; | |
1375 | } else { | |
1376 | lp->init_block_mem = | |
1377 | sbus_alloc_consistent(sdev, sizeof(struct lance_init_block), | |
1378 | &lp->init_block_dvma); | |
1379 | if (!lp->init_block_mem || lp->init_block_dvma == 0) { | |
1380 | printk(KERN_ERR "SunLance: Cannot allocate consistent DMA memory.\n"); | |
1381 | goto fail; | |
1382 | } | |
1383 | lp->pio_buffer = 0; | |
1384 | lp->init_ring = lance_init_ring_dvma; | |
1385 | lp->rx = lance_rx_dvma; | |
1386 | lp->tx = lance_tx_dvma; | |
1387 | } | |
1388 | lp->busmaster_regval = prom_getintdefault(sdev->prom_node, | |
1389 | "busmaster-regval", | |
1390 | (LE_C3_BSWP | LE_C3_ACON | | |
1391 | LE_C3_BCON)); | |
1392 | ||
1393 | lp->name = lancestr; | |
1394 | lp->ledma = ledma; | |
1395 | ||
1396 | lp->burst_sizes = 0; | |
1397 | if (lp->ledma) { | |
1398 | char prop[6]; | |
1399 | unsigned int sbmask; | |
1400 | u32 csr; | |
1401 | ||
1402 | /* Find burst-size property for ledma */ | |
1403 | lp->burst_sizes = prom_getintdefault(ledma->sdev->prom_node, | |
1404 | "burst-sizes", 0); | |
1405 | ||
1406 | /* ledma may be capable of fast bursts, but sbus may not. */ | |
1407 | sbmask = prom_getintdefault(ledma->sdev->bus->prom_node, | |
1408 | "burst-sizes", DMA_BURSTBITS); | |
1409 | lp->burst_sizes &= sbmask; | |
1410 | ||
1411 | /* Get the cable-selection property */ | |
1412 | memset(prop, 0, sizeof(prop)); | |
1413 | prom_getstring(ledma->sdev->prom_node, "cable-selection", | |
1414 | prop, sizeof(prop)); | |
1415 | if (prop[0] == 0) { | |
1416 | int topnd, nd; | |
1417 | ||
1418 | printk(KERN_INFO "SunLance: using auto-carrier-detection.\n"); | |
1419 | ||
1420 | /* Is this found at /options .attributes in all | |
1421 | * Prom versions? XXX | |
1422 | */ | |
1423 | topnd = prom_getchild(prom_root_node); | |
1424 | ||
1425 | nd = prom_searchsiblings(topnd, "options"); | |
1426 | if (!nd) | |
1427 | goto no_link_test; | |
1428 | ||
1429 | if (!prom_node_has_property(nd, "tpe-link-test?")) | |
1430 | goto no_link_test; | |
1431 | ||
1432 | memset(prop, 0, sizeof(prop)); | |
1433 | prom_getstring(nd, "tpe-link-test?", prop, | |
1434 | sizeof(prop)); | |
1435 | ||
1436 | if (strcmp(prop, "true")) { | |
1437 | printk(KERN_NOTICE "SunLance: warning: overriding option " | |
1438 | "'tpe-link-test?'\n"); | |
1439 | printk(KERN_NOTICE "SunLance: warning: mail any problems " | |
1440 | "to ecd@skynet.be\n"); | |
1441 | auxio_set_lte(AUXIO_LTE_ON); | |
1442 | } | |
1443 | no_link_test: | |
1444 | lp->auto_select = 1; | |
1445 | lp->tpe = 0; | |
1446 | } else if (!strcmp(prop, "aui")) { | |
1447 | lp->auto_select = 0; | |
1448 | lp->tpe = 0; | |
1449 | } else { | |
1450 | lp->auto_select = 0; | |
1451 | lp->tpe = 1; | |
1452 | } | |
1453 | ||
1454 | lp->dregs = ledma->regs; | |
1455 | ||
1456 | /* Reset ledma */ | |
1457 | csr = sbus_readl(lp->dregs + DMA_CSR); | |
1458 | sbus_writel(csr | DMA_RST_ENET, lp->dregs + DMA_CSR); | |
1459 | udelay(200); | |
1460 | sbus_writel(csr & ~DMA_RST_ENET, lp->dregs + DMA_CSR); | |
1461 | } else | |
1462 | lp->dregs = NULL; | |
1463 | ||
1464 | lp->dev = dev; | |
1465 | SET_MODULE_OWNER(dev); | |
1466 | dev->open = &lance_open; | |
1467 | dev->stop = &lance_close; | |
1468 | dev->hard_start_xmit = &lance_start_xmit; | |
1469 | dev->tx_timeout = &lance_tx_timeout; | |
1470 | dev->watchdog_timeo = 5*HZ; | |
1471 | dev->get_stats = &lance_get_stats; | |
1472 | dev->set_multicast_list = &lance_set_multicast; | |
1473 | dev->ethtool_ops = &sparc_lance_ethtool_ops; | |
1474 | ||
1475 | dev->irq = sdev->irqs[0]; | |
1476 | ||
1477 | dev->dma = 0; | |
1478 | ||
1479 | /* We cannot sleep if the chip is busy during a | |
1480 | * multicast list update event, because such events | |
1481 | * can occur from interrupts (ex. IPv6). So we | |
1482 | * use a timer to try again later when necessary. -DaveM | |
1483 | */ | |
1484 | init_timer(&lp->multicast_timer); | |
1485 | lp->multicast_timer.data = (unsigned long) dev; | |
1486 | lp->multicast_timer.function = &lance_set_multicast_retry; | |
1487 | ||
1488 | if (register_netdev(dev)) { | |
1489 | printk(KERN_ERR "SunLance: Cannot register device.\n"); | |
1490 | goto fail; | |
1491 | } | |
1492 | ||
1493 | lp->next_module = root_lance_dev; | |
1494 | root_lance_dev = lp; | |
1495 | ||
1496 | printk(KERN_INFO "%s: LANCE ", dev->name); | |
1497 | ||
1498 | for (i = 0; i < 6; i++) | |
1499 | printk("%2.2x%c", dev->dev_addr[i], | |
1500 | i == 5 ? ' ': ':'); | |
1501 | printk("\n"); | |
1502 | ||
1503 | return 0; | |
1504 | ||
1505 | fail: | |
1506 | lance_free_hwresources(lp); | |
1507 | free_netdev(dev); | |
1508 | return -ENODEV; | |
1509 | } | |
1510 | ||
1511 | /* On 4m, find the associated dma for the lance chip */ | |
1512 | static inline struct sbus_dma *find_ledma(struct sbus_dev *sdev) | |
1513 | { | |
1514 | struct sbus_dma *p; | |
1515 | ||
1516 | for_each_dvma(p) { | |
1517 | if (p->sdev == sdev) | |
1518 | return p; | |
1519 | } | |
1520 | return NULL; | |
1521 | } | |
1522 | ||
1523 | #ifdef CONFIG_SUN4 | |
1524 | ||
1525 | #include <asm/sun4paddr.h> | |
1526 | #include <asm/machines.h> | |
1527 | ||
1528 | /* Find all the lance cards on the system and initialize them */ | |
1529 | static int __init sparc_lance_probe(void) | |
1530 | { | |
1531 | static struct sbus_dev sdev; | |
1532 | static int called; | |
1533 | ||
1534 | root_lance_dev = NULL; | |
1535 | ||
1536 | if (called) | |
1537 | return -ENODEV; | |
1538 | called++; | |
1539 | ||
1540 | if ((idprom->id_machtype == (SM_SUN4|SM_4_330)) || | |
1541 | (idprom->id_machtype == (SM_SUN4|SM_4_470))) { | |
1542 | memset(&sdev, 0, sizeof(sdev)); | |
1543 | sdev.reg_addrs[0].phys_addr = sun4_eth_physaddr; | |
1544 | sdev.irqs[0] = 6; | |
1545 | return sparc_lance_init(&sdev, NULL, NULL); | |
1546 | } | |
1547 | return -ENODEV; | |
1548 | } | |
1549 | ||
1550 | #else /* !CONFIG_SUN4 */ | |
1551 | ||
1552 | /* Find all the lance cards on the system and initialize them */ | |
1553 | static int __init sparc_lance_probe(void) | |
1554 | { | |
1555 | struct sbus_bus *bus; | |
1556 | struct sbus_dev *sdev = NULL; | |
1557 | struct sbus_dma *ledma = NULL; | |
1558 | static int called; | |
1559 | int cards = 0, v; | |
1560 | ||
1561 | root_lance_dev = NULL; | |
1562 | ||
1563 | if (called) | |
1564 | return -ENODEV; | |
1565 | called++; | |
1566 | ||
1567 | for_each_sbus (bus) { | |
1568 | for_each_sbusdev (sdev, bus) { | |
1569 | if (strcmp(sdev->prom_name, "le") == 0) { | |
1570 | cards++; | |
1571 | if ((v = sparc_lance_init(sdev, NULL, NULL))) | |
1572 | return v; | |
1573 | continue; | |
1574 | } | |
1575 | if (strcmp(sdev->prom_name, "ledma") == 0) { | |
1576 | cards++; | |
1577 | ledma = find_ledma(sdev); | |
1578 | if ((v = sparc_lance_init(sdev->child, | |
1579 | ledma, NULL))) | |
1580 | return v; | |
1581 | continue; | |
1582 | } | |
1583 | if (strcmp(sdev->prom_name, "lebuffer") == 0){ | |
1584 | cards++; | |
1585 | if ((v = sparc_lance_init(sdev->child, | |
1586 | NULL, sdev))) | |
1587 | return v; | |
1588 | continue; | |
1589 | } | |
1590 | } /* for each sbusdev */ | |
1591 | } /* for each sbus */ | |
1592 | if (!cards) | |
1593 | return -ENODEV; | |
1594 | return 0; | |
1595 | } | |
1596 | #endif /* !CONFIG_SUN4 */ | |
1597 | ||
1598 | static void __exit sparc_lance_cleanup(void) | |
1599 | { | |
1600 | struct lance_private *lp; | |
1601 | ||
1602 | while (root_lance_dev) { | |
1603 | lp = root_lance_dev->next_module; | |
1604 | ||
1605 | unregister_netdev(root_lance_dev->dev); | |
1606 | lance_free_hwresources(root_lance_dev); | |
1607 | free_netdev(root_lance_dev->dev); | |
1608 | root_lance_dev = lp; | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | module_init(sparc_lance_probe); | |
1613 | module_exit(sparc_lance_cleanup); | |
1614 | MODULE_LICENSE("GPL"); |