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1da177e4 LT |
1 | /* $Id: sunhme.c,v 1.124 2002/01/15 06:25:51 davem Exp $ |
2 | * sunhme.c: Sparc HME/BigMac 10/100baseT half/full duplex auto switching, | |
3 | * auto carrier detecting ethernet driver. Also known as the | |
4 | * "Happy Meal Ethernet" found on SunSwift SBUS cards. | |
5 | * | |
6 | * Copyright (C) 1996, 1998, 1999, 2002, 2003 David S. Miller (davem@redhat.com) | |
7 | * | |
8 | * Changes : | |
9 | * 2000/11/11 Willy Tarreau <willy AT meta-x.org> | |
10 | * - port to non-sparc architectures. Tested only on x86 and | |
11 | * only currently works with QFE PCI cards. | |
12 | * - ability to specify the MAC address at module load time by passing this | |
13 | * argument : macaddr=0x00,0x10,0x20,0x30,0x40,0x50 | |
14 | */ | |
15 | ||
16 | static char version[] = | |
17 | "sunhme.c:v2.02 24/Aug/2003 David S. Miller (davem@redhat.com)\n"; | |
18 | ||
19 | #include <linux/config.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/types.h> | |
23 | #include <linux/fcntl.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/ioport.h> | |
26 | #include <linux/in.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/string.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/ethtool.h> | |
32 | #include <linux/mii.h> | |
33 | #include <linux/crc32.h> | |
34 | #include <linux/random.h> | |
35 | #include <linux/errno.h> | |
36 | #include <linux/netdevice.h> | |
37 | #include <linux/etherdevice.h> | |
38 | #include <linux/skbuff.h> | |
39 | #include <linux/bitops.h> | |
40 | ||
41 | #include <asm/system.h> | |
42 | #include <asm/io.h> | |
43 | #include <asm/dma.h> | |
44 | #include <asm/byteorder.h> | |
45 | ||
46 | #ifdef __sparc__ | |
47 | #include <asm/idprom.h> | |
48 | #include <asm/sbus.h> | |
49 | #include <asm/openprom.h> | |
50 | #include <asm/oplib.h> | |
51 | #include <asm/auxio.h> | |
52 | #ifndef __sparc_v9__ | |
53 | #include <asm/io-unit.h> | |
54 | #endif | |
55 | #endif | |
56 | #include <asm/uaccess.h> | |
57 | ||
58 | #include <asm/pgtable.h> | |
59 | #include <asm/irq.h> | |
60 | ||
61 | #ifdef CONFIG_PCI | |
62 | #include <linux/pci.h> | |
63 | #ifdef __sparc__ | |
64 | #include <asm/pbm.h> | |
65 | #endif | |
66 | #endif | |
67 | ||
68 | #include "sunhme.h" | |
69 | ||
70 | ||
71 | #define DRV_NAME "sunhme" | |
72 | ||
73 | static int macaddr[6]; | |
74 | ||
75 | /* accept MAC address of the form macaddr=0x08,0x00,0x20,0x30,0x40,0x50 */ | |
76 | module_param_array(macaddr, int, NULL, 0); | |
77 | MODULE_PARM_DESC(macaddr, "Happy Meal MAC address to set"); | |
78 | MODULE_LICENSE("GPL"); | |
79 | ||
80 | static struct happy_meal *root_happy_dev; | |
81 | ||
82 | #ifdef CONFIG_SBUS | |
83 | static struct quattro *qfe_sbus_list; | |
84 | #endif | |
85 | ||
86 | #ifdef CONFIG_PCI | |
87 | static struct quattro *qfe_pci_list; | |
88 | #endif | |
89 | ||
90 | #undef HMEDEBUG | |
91 | #undef SXDEBUG | |
92 | #undef RXDEBUG | |
93 | #undef TXDEBUG | |
94 | #undef TXLOGGING | |
95 | ||
96 | #ifdef TXLOGGING | |
97 | struct hme_tx_logent { | |
98 | unsigned int tstamp; | |
99 | int tx_new, tx_old; | |
100 | unsigned int action; | |
101 | #define TXLOG_ACTION_IRQ 0x01 | |
102 | #define TXLOG_ACTION_TXMIT 0x02 | |
103 | #define TXLOG_ACTION_TBUSY 0x04 | |
104 | #define TXLOG_ACTION_NBUFS 0x08 | |
105 | unsigned int status; | |
106 | }; | |
107 | #define TX_LOG_LEN 128 | |
108 | static struct hme_tx_logent tx_log[TX_LOG_LEN]; | |
109 | static int txlog_cur_entry; | |
110 | static __inline__ void tx_add_log(struct happy_meal *hp, unsigned int a, unsigned int s) | |
111 | { | |
112 | struct hme_tx_logent *tlp; | |
113 | unsigned long flags; | |
114 | ||
115 | save_and_cli(flags); | |
116 | tlp = &tx_log[txlog_cur_entry]; | |
117 | tlp->tstamp = (unsigned int)jiffies; | |
118 | tlp->tx_new = hp->tx_new; | |
119 | tlp->tx_old = hp->tx_old; | |
120 | tlp->action = a; | |
121 | tlp->status = s; | |
122 | txlog_cur_entry = (txlog_cur_entry + 1) & (TX_LOG_LEN - 1); | |
123 | restore_flags(flags); | |
124 | } | |
125 | static __inline__ void tx_dump_log(void) | |
126 | { | |
127 | int i, this; | |
128 | ||
129 | this = txlog_cur_entry; | |
130 | for (i = 0; i < TX_LOG_LEN; i++) { | |
131 | printk("TXLOG[%d]: j[%08x] tx[N(%d)O(%d)] action[%08x] stat[%08x]\n", i, | |
132 | tx_log[this].tstamp, | |
133 | tx_log[this].tx_new, tx_log[this].tx_old, | |
134 | tx_log[this].action, tx_log[this].status); | |
135 | this = (this + 1) & (TX_LOG_LEN - 1); | |
136 | } | |
137 | } | |
138 | static __inline__ void tx_dump_ring(struct happy_meal *hp) | |
139 | { | |
140 | struct hmeal_init_block *hb = hp->happy_block; | |
141 | struct happy_meal_txd *tp = &hb->happy_meal_txd[0]; | |
142 | int i; | |
143 | ||
144 | for (i = 0; i < TX_RING_SIZE; i+=4) { | |
145 | printk("TXD[%d..%d]: [%08x:%08x] [%08x:%08x] [%08x:%08x] [%08x:%08x]\n", | |
146 | i, i + 4, | |
147 | le32_to_cpu(tp[i].tx_flags), le32_to_cpu(tp[i].tx_addr), | |
148 | le32_to_cpu(tp[i + 1].tx_flags), le32_to_cpu(tp[i + 1].tx_addr), | |
149 | le32_to_cpu(tp[i + 2].tx_flags), le32_to_cpu(tp[i + 2].tx_addr), | |
150 | le32_to_cpu(tp[i + 3].tx_flags), le32_to_cpu(tp[i + 3].tx_addr)); | |
151 | } | |
152 | } | |
153 | #else | |
154 | #define tx_add_log(hp, a, s) do { } while(0) | |
155 | #define tx_dump_log() do { } while(0) | |
156 | #define tx_dump_ring(hp) do { } while(0) | |
157 | #endif | |
158 | ||
159 | #ifdef HMEDEBUG | |
160 | #define HMD(x) printk x | |
161 | #else | |
162 | #define HMD(x) | |
163 | #endif | |
164 | ||
165 | /* #define AUTO_SWITCH_DEBUG */ | |
166 | ||
167 | #ifdef AUTO_SWITCH_DEBUG | |
168 | #define ASD(x) printk x | |
169 | #else | |
170 | #define ASD(x) | |
171 | #endif | |
172 | ||
173 | #define DEFAULT_IPG0 16 /* For lance-mode only */ | |
174 | #define DEFAULT_IPG1 8 /* For all modes */ | |
175 | #define DEFAULT_IPG2 4 /* For all modes */ | |
176 | #define DEFAULT_JAMSIZE 4 /* Toe jam */ | |
177 | ||
178 | #if defined(CONFIG_PCI) && defined(MODULE) | |
179 | /* This happy_pci_ids is declared __initdata because it is only used | |
180 | as an advisory to depmod. If this is ported to the new PCI interface | |
181 | where it could be referenced at any time due to hot plugging, | |
182 | the __initdata reference should be removed. */ | |
183 | ||
184 | static struct pci_device_id happymeal_pci_ids[] = { | |
185 | { | |
186 | .vendor = PCI_VENDOR_ID_SUN, | |
187 | .device = PCI_DEVICE_ID_SUN_HAPPYMEAL, | |
188 | .subvendor = PCI_ANY_ID, | |
189 | .subdevice = PCI_ANY_ID, | |
190 | }, | |
191 | { } /* Terminating entry */ | |
192 | }; | |
193 | ||
194 | MODULE_DEVICE_TABLE(pci, happymeal_pci_ids); | |
195 | ||
196 | #endif | |
197 | ||
198 | /* NOTE: In the descriptor writes one _must_ write the address | |
199 | * member _first_. The card must not be allowed to see | |
200 | * the updated descriptor flags until the address is | |
201 | * correct. I've added a write memory barrier between | |
202 | * the two stores so that I can sleep well at night... -DaveM | |
203 | */ | |
204 | ||
205 | #if defined(CONFIG_SBUS) && defined(CONFIG_PCI) | |
206 | static void sbus_hme_write32(void __iomem *reg, u32 val) | |
207 | { | |
208 | sbus_writel(val, reg); | |
209 | } | |
210 | ||
211 | static u32 sbus_hme_read32(void __iomem *reg) | |
212 | { | |
213 | return sbus_readl(reg); | |
214 | } | |
215 | ||
216 | static void sbus_hme_write_rxd(struct happy_meal_rxd *rxd, u32 flags, u32 addr) | |
217 | { | |
218 | rxd->rx_addr = addr; | |
219 | wmb(); | |
220 | rxd->rx_flags = flags; | |
221 | } | |
222 | ||
223 | static void sbus_hme_write_txd(struct happy_meal_txd *txd, u32 flags, u32 addr) | |
224 | { | |
225 | txd->tx_addr = addr; | |
226 | wmb(); | |
227 | txd->tx_flags = flags; | |
228 | } | |
229 | ||
230 | static u32 sbus_hme_read_desc32(u32 *p) | |
231 | { | |
232 | return *p; | |
233 | } | |
234 | ||
235 | static void pci_hme_write32(void __iomem *reg, u32 val) | |
236 | { | |
237 | writel(val, reg); | |
238 | } | |
239 | ||
240 | static u32 pci_hme_read32(void __iomem *reg) | |
241 | { | |
242 | return readl(reg); | |
243 | } | |
244 | ||
245 | static void pci_hme_write_rxd(struct happy_meal_rxd *rxd, u32 flags, u32 addr) | |
246 | { | |
247 | rxd->rx_addr = cpu_to_le32(addr); | |
248 | wmb(); | |
249 | rxd->rx_flags = cpu_to_le32(flags); | |
250 | } | |
251 | ||
252 | static void pci_hme_write_txd(struct happy_meal_txd *txd, u32 flags, u32 addr) | |
253 | { | |
254 | txd->tx_addr = cpu_to_le32(addr); | |
255 | wmb(); | |
256 | txd->tx_flags = cpu_to_le32(flags); | |
257 | } | |
258 | ||
259 | static u32 pci_hme_read_desc32(u32 *p) | |
260 | { | |
261 | return cpu_to_le32p(p); | |
262 | } | |
263 | ||
264 | #define hme_write32(__hp, __reg, __val) \ | |
265 | ((__hp)->write32((__reg), (__val))) | |
266 | #define hme_read32(__hp, __reg) \ | |
267 | ((__hp)->read32(__reg)) | |
268 | #define hme_write_rxd(__hp, __rxd, __flags, __addr) \ | |
269 | ((__hp)->write_rxd((__rxd), (__flags), (__addr))) | |
270 | #define hme_write_txd(__hp, __txd, __flags, __addr) \ | |
271 | ((__hp)->write_txd((__txd), (__flags), (__addr))) | |
272 | #define hme_read_desc32(__hp, __p) \ | |
273 | ((__hp)->read_desc32(__p)) | |
274 | #define hme_dma_map(__hp, __ptr, __size, __dir) \ | |
275 | ((__hp)->dma_map((__hp)->happy_dev, (__ptr), (__size), (__dir))) | |
276 | #define hme_dma_unmap(__hp, __addr, __size, __dir) \ | |
277 | ((__hp)->dma_unmap((__hp)->happy_dev, (__addr), (__size), (__dir))) | |
278 | #define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \ | |
279 | ((__hp)->dma_sync_for_cpu((__hp)->happy_dev, (__addr), (__size), (__dir))) | |
280 | #define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \ | |
281 | ((__hp)->dma_sync_for_device((__hp)->happy_dev, (__addr), (__size), (__dir))) | |
282 | #else | |
283 | #ifdef CONFIG_SBUS | |
284 | /* SBUS only compilation */ | |
285 | #define hme_write32(__hp, __reg, __val) \ | |
286 | sbus_writel((__val), (__reg)) | |
287 | #define hme_read32(__hp, __reg) \ | |
288 | sbus_readl(__reg) | |
289 | #define hme_write_rxd(__hp, __rxd, __flags, __addr) \ | |
290 | do { (__rxd)->rx_addr = (__addr); \ | |
291 | wmb(); \ | |
292 | (__rxd)->rx_flags = (__flags); \ | |
293 | } while(0) | |
294 | #define hme_write_txd(__hp, __txd, __flags, __addr) \ | |
295 | do { (__txd)->tx_addr = (__addr); \ | |
296 | wmb(); \ | |
297 | (__txd)->tx_flags = (__flags); \ | |
298 | } while(0) | |
299 | #define hme_read_desc32(__hp, __p) (*(__p)) | |
300 | #define hme_dma_map(__hp, __ptr, __size, __dir) \ | |
301 | sbus_map_single((__hp)->happy_dev, (__ptr), (__size), (__dir)) | |
302 | #define hme_dma_unmap(__hp, __addr, __size, __dir) \ | |
303 | sbus_unmap_single((__hp)->happy_dev, (__addr), (__size), (__dir)) | |
304 | #define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \ | |
305 | sbus_dma_sync_single_for_cpu((__hp)->happy_dev, (__addr), (__size), (__dir)) | |
306 | #define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \ | |
307 | sbus_dma_sync_single_for_device((__hp)->happy_dev, (__addr), (__size), (__dir)) | |
308 | #else | |
309 | /* PCI only compilation */ | |
310 | #define hme_write32(__hp, __reg, __val) \ | |
311 | writel((__val), (__reg)) | |
312 | #define hme_read32(__hp, __reg) \ | |
313 | readl(__reg) | |
314 | #define hme_write_rxd(__hp, __rxd, __flags, __addr) \ | |
315 | do { (__rxd)->rx_addr = cpu_to_le32(__addr); \ | |
316 | wmb(); \ | |
317 | (__rxd)->rx_flags = cpu_to_le32(__flags); \ | |
318 | } while(0) | |
319 | #define hme_write_txd(__hp, __txd, __flags, __addr) \ | |
320 | do { (__txd)->tx_addr = cpu_to_le32(__addr); \ | |
321 | wmb(); \ | |
322 | (__txd)->tx_flags = cpu_to_le32(__flags); \ | |
323 | } while(0) | |
324 | #define hme_read_desc32(__hp, __p) cpu_to_le32p(__p) | |
325 | #define hme_dma_map(__hp, __ptr, __size, __dir) \ | |
326 | pci_map_single((__hp)->happy_dev, (__ptr), (__size), (__dir)) | |
327 | #define hme_dma_unmap(__hp, __addr, __size, __dir) \ | |
328 | pci_unmap_single((__hp)->happy_dev, (__addr), (__size), (__dir)) | |
329 | #define hme_dma_sync_for_cpu(__hp, __addr, __size, __dir) \ | |
330 | pci_dma_sync_single_for_cpu((__hp)->happy_dev, (__addr), (__size), (__dir)) | |
331 | #define hme_dma_sync_for_device(__hp, __addr, __size, __dir) \ | |
332 | pci_dma_sync_single_for_device((__hp)->happy_dev, (__addr), (__size), (__dir)) | |
333 | #endif | |
334 | #endif | |
335 | ||
336 | ||
337 | #ifdef SBUS_DMA_BIDIRECTIONAL | |
338 | # define DMA_BIDIRECTIONAL SBUS_DMA_BIDIRECTIONAL | |
339 | #else | |
340 | # define DMA_BIDIRECTIONAL 0 | |
341 | #endif | |
342 | ||
343 | #ifdef SBUS_DMA_FROMDEVICE | |
344 | # define DMA_FROMDEVICE SBUS_DMA_FROMDEVICE | |
345 | #else | |
346 | # define DMA_TODEVICE 1 | |
347 | #endif | |
348 | ||
349 | #ifdef SBUS_DMA_TODEVICE | |
350 | # define DMA_TODEVICE SBUS_DMA_TODEVICE | |
351 | #else | |
352 | # define DMA_FROMDEVICE 2 | |
353 | #endif | |
354 | ||
355 | ||
356 | /* Oh yes, the MIF BitBang is mighty fun to program. BitBucket is more like it. */ | |
357 | static void BB_PUT_BIT(struct happy_meal *hp, void __iomem *tregs, int bit) | |
358 | { | |
359 | hme_write32(hp, tregs + TCVR_BBDATA, bit); | |
360 | hme_write32(hp, tregs + TCVR_BBCLOCK, 0); | |
361 | hme_write32(hp, tregs + TCVR_BBCLOCK, 1); | |
362 | } | |
363 | ||
364 | #if 0 | |
365 | static u32 BB_GET_BIT(struct happy_meal *hp, void __iomem *tregs, int internal) | |
366 | { | |
367 | u32 ret; | |
368 | ||
369 | hme_write32(hp, tregs + TCVR_BBCLOCK, 0); | |
370 | hme_write32(hp, tregs + TCVR_BBCLOCK, 1); | |
371 | ret = hme_read32(hp, tregs + TCVR_CFG); | |
372 | if (internal) | |
373 | ret &= TCV_CFG_MDIO0; | |
374 | else | |
375 | ret &= TCV_CFG_MDIO1; | |
376 | ||
377 | return ret; | |
378 | } | |
379 | #endif | |
380 | ||
381 | static u32 BB_GET_BIT2(struct happy_meal *hp, void __iomem *tregs, int internal) | |
382 | { | |
383 | u32 retval; | |
384 | ||
385 | hme_write32(hp, tregs + TCVR_BBCLOCK, 0); | |
386 | udelay(1); | |
387 | retval = hme_read32(hp, tregs + TCVR_CFG); | |
388 | if (internal) | |
389 | retval &= TCV_CFG_MDIO0; | |
390 | else | |
391 | retval &= TCV_CFG_MDIO1; | |
392 | hme_write32(hp, tregs + TCVR_BBCLOCK, 1); | |
393 | ||
394 | return retval; | |
395 | } | |
396 | ||
397 | #define TCVR_FAILURE 0x80000000 /* Impossible MIF read value */ | |
398 | ||
399 | static int happy_meal_bb_read(struct happy_meal *hp, | |
400 | void __iomem *tregs, int reg) | |
401 | { | |
402 | u32 tmp; | |
403 | int retval = 0; | |
404 | int i; | |
405 | ||
406 | ASD(("happy_meal_bb_read: reg=%d ", reg)); | |
407 | ||
408 | /* Enable the MIF BitBang outputs. */ | |
409 | hme_write32(hp, tregs + TCVR_BBOENAB, 1); | |
410 | ||
411 | /* Force BitBang into the idle state. */ | |
412 | for (i = 0; i < 32; i++) | |
413 | BB_PUT_BIT(hp, tregs, 1); | |
414 | ||
415 | /* Give it the read sequence. */ | |
416 | BB_PUT_BIT(hp, tregs, 0); | |
417 | BB_PUT_BIT(hp, tregs, 1); | |
418 | BB_PUT_BIT(hp, tregs, 1); | |
419 | BB_PUT_BIT(hp, tregs, 0); | |
420 | ||
421 | /* Give it the PHY address. */ | |
422 | tmp = hp->paddr & 0xff; | |
423 | for (i = 4; i >= 0; i--) | |
424 | BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1)); | |
425 | ||
426 | /* Tell it what register we want to read. */ | |
427 | tmp = (reg & 0xff); | |
428 | for (i = 4; i >= 0; i--) | |
429 | BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1)); | |
430 | ||
431 | /* Close down the MIF BitBang outputs. */ | |
432 | hme_write32(hp, tregs + TCVR_BBOENAB, 0); | |
433 | ||
434 | /* Now read in the value. */ | |
435 | (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); | |
436 | for (i = 15; i >= 0; i--) | |
437 | retval |= BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); | |
438 | (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); | |
439 | (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); | |
440 | (void) BB_GET_BIT2(hp, tregs, (hp->tcvr_type == internal)); | |
441 | ASD(("value=%x\n", retval)); | |
442 | return retval; | |
443 | } | |
444 | ||
445 | static void happy_meal_bb_write(struct happy_meal *hp, | |
446 | void __iomem *tregs, int reg, | |
447 | unsigned short value) | |
448 | { | |
449 | u32 tmp; | |
450 | int i; | |
451 | ||
452 | ASD(("happy_meal_bb_write: reg=%d value=%x\n", reg, value)); | |
453 | ||
454 | /* Enable the MIF BitBang outputs. */ | |
455 | hme_write32(hp, tregs + TCVR_BBOENAB, 1); | |
456 | ||
457 | /* Force BitBang into the idle state. */ | |
458 | for (i = 0; i < 32; i++) | |
459 | BB_PUT_BIT(hp, tregs, 1); | |
460 | ||
461 | /* Give it write sequence. */ | |
462 | BB_PUT_BIT(hp, tregs, 0); | |
463 | BB_PUT_BIT(hp, tregs, 1); | |
464 | BB_PUT_BIT(hp, tregs, 0); | |
465 | BB_PUT_BIT(hp, tregs, 1); | |
466 | ||
467 | /* Give it the PHY address. */ | |
468 | tmp = (hp->paddr & 0xff); | |
469 | for (i = 4; i >= 0; i--) | |
470 | BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1)); | |
471 | ||
472 | /* Tell it what register we will be writing. */ | |
473 | tmp = (reg & 0xff); | |
474 | for (i = 4; i >= 0; i--) | |
475 | BB_PUT_BIT(hp, tregs, ((tmp >> i) & 1)); | |
476 | ||
477 | /* Tell it to become ready for the bits. */ | |
478 | BB_PUT_BIT(hp, tregs, 1); | |
479 | BB_PUT_BIT(hp, tregs, 0); | |
480 | ||
481 | for (i = 15; i >= 0; i--) | |
482 | BB_PUT_BIT(hp, tregs, ((value >> i) & 1)); | |
483 | ||
484 | /* Close down the MIF BitBang outputs. */ | |
485 | hme_write32(hp, tregs + TCVR_BBOENAB, 0); | |
486 | } | |
487 | ||
488 | #define TCVR_READ_TRIES 16 | |
489 | ||
490 | static int happy_meal_tcvr_read(struct happy_meal *hp, | |
491 | void __iomem *tregs, int reg) | |
492 | { | |
493 | int tries = TCVR_READ_TRIES; | |
494 | int retval; | |
495 | ||
496 | ASD(("happy_meal_tcvr_read: reg=0x%02x ", reg)); | |
497 | if (hp->tcvr_type == none) { | |
498 | ASD(("no transceiver, value=TCVR_FAILURE\n")); | |
499 | return TCVR_FAILURE; | |
500 | } | |
501 | ||
502 | if (!(hp->happy_flags & HFLAG_FENABLE)) { | |
503 | ASD(("doing bit bang\n")); | |
504 | return happy_meal_bb_read(hp, tregs, reg); | |
505 | } | |
506 | ||
507 | hme_write32(hp, tregs + TCVR_FRAME, | |
508 | (FRAME_READ | (hp->paddr << 23) | ((reg & 0xff) << 18))); | |
509 | while (!(hme_read32(hp, tregs + TCVR_FRAME) & 0x10000) && --tries) | |
510 | udelay(20); | |
511 | if (!tries) { | |
512 | printk(KERN_ERR "happy meal: Aieee, transceiver MIF read bolixed\n"); | |
513 | return TCVR_FAILURE; | |
514 | } | |
515 | retval = hme_read32(hp, tregs + TCVR_FRAME) & 0xffff; | |
516 | ASD(("value=%04x\n", retval)); | |
517 | return retval; | |
518 | } | |
519 | ||
520 | #define TCVR_WRITE_TRIES 16 | |
521 | ||
522 | static void happy_meal_tcvr_write(struct happy_meal *hp, | |
523 | void __iomem *tregs, int reg, | |
524 | unsigned short value) | |
525 | { | |
526 | int tries = TCVR_WRITE_TRIES; | |
527 | ||
528 | ASD(("happy_meal_tcvr_write: reg=0x%02x value=%04x\n", reg, value)); | |
529 | ||
530 | /* Welcome to Sun Microsystems, can I take your order please? */ | |
531 | if (!(hp->happy_flags & HFLAG_FENABLE)) { | |
532 | happy_meal_bb_write(hp, tregs, reg, value); | |
533 | return; | |
534 | } | |
535 | ||
536 | /* Would you like fries with that? */ | |
537 | hme_write32(hp, tregs + TCVR_FRAME, | |
538 | (FRAME_WRITE | (hp->paddr << 23) | | |
539 | ((reg & 0xff) << 18) | (value & 0xffff))); | |
540 | while (!(hme_read32(hp, tregs + TCVR_FRAME) & 0x10000) && --tries) | |
541 | udelay(20); | |
542 | ||
543 | /* Anything else? */ | |
544 | if (!tries) | |
545 | printk(KERN_ERR "happy meal: Aieee, transceiver MIF write bolixed\n"); | |
546 | ||
547 | /* Fifty-two cents is your change, have a nice day. */ | |
548 | } | |
549 | ||
550 | /* Auto negotiation. The scheme is very simple. We have a timer routine | |
551 | * that keeps watching the auto negotiation process as it progresses. | |
552 | * The DP83840 is first told to start doing it's thing, we set up the time | |
553 | * and place the timer state machine in it's initial state. | |
554 | * | |
555 | * Here the timer peeks at the DP83840 status registers at each click to see | |
556 | * if the auto negotiation has completed, we assume here that the DP83840 PHY | |
557 | * will time out at some point and just tell us what (didn't) happen. For | |
558 | * complete coverage we only allow so many of the ticks at this level to run, | |
559 | * when this has expired we print a warning message and try another strategy. | |
560 | * This "other" strategy is to force the interface into various speed/duplex | |
561 | * configurations and we stop when we see a link-up condition before the | |
562 | * maximum number of "peek" ticks have occurred. | |
563 | * | |
564 | * Once a valid link status has been detected we configure the BigMAC and | |
565 | * the rest of the Happy Meal to speak the most efficient protocol we could | |
566 | * get a clean link for. The priority for link configurations, highest first | |
567 | * is: | |
568 | * 100 Base-T Full Duplex | |
569 | * 100 Base-T Half Duplex | |
570 | * 10 Base-T Full Duplex | |
571 | * 10 Base-T Half Duplex | |
572 | * | |
573 | * We start a new timer now, after a successful auto negotiation status has | |
574 | * been detected. This timer just waits for the link-up bit to get set in | |
575 | * the BMCR of the DP83840. When this occurs we print a kernel log message | |
576 | * describing the link type in use and the fact that it is up. | |
577 | * | |
578 | * If a fatal error of some sort is signalled and detected in the interrupt | |
579 | * service routine, and the chip is reset, or the link is ifconfig'd down | |
580 | * and then back up, this entire process repeats itself all over again. | |
581 | */ | |
582 | static int try_next_permutation(struct happy_meal *hp, void __iomem *tregs) | |
583 | { | |
584 | hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
585 | ||
586 | /* Downgrade from full to half duplex. Only possible | |
587 | * via ethtool. | |
588 | */ | |
589 | if (hp->sw_bmcr & BMCR_FULLDPLX) { | |
590 | hp->sw_bmcr &= ~(BMCR_FULLDPLX); | |
591 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); | |
592 | return 0; | |
593 | } | |
594 | ||
595 | /* Downgrade from 100 to 10. */ | |
596 | if (hp->sw_bmcr & BMCR_SPEED100) { | |
597 | hp->sw_bmcr &= ~(BMCR_SPEED100); | |
598 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); | |
599 | return 0; | |
600 | } | |
601 | ||
602 | /* We've tried everything. */ | |
603 | return -1; | |
604 | } | |
605 | ||
606 | static void display_link_mode(struct happy_meal *hp, void __iomem *tregs) | |
607 | { | |
608 | printk(KERN_INFO "%s: Link is up using ", hp->dev->name); | |
609 | if (hp->tcvr_type == external) | |
610 | printk("external "); | |
611 | else | |
612 | printk("internal "); | |
613 | printk("transceiver at "); | |
614 | hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA); | |
615 | if (hp->sw_lpa & (LPA_100HALF | LPA_100FULL)) { | |
616 | if (hp->sw_lpa & LPA_100FULL) | |
617 | printk("100Mb/s, Full Duplex.\n"); | |
618 | else | |
619 | printk("100Mb/s, Half Duplex.\n"); | |
620 | } else { | |
621 | if (hp->sw_lpa & LPA_10FULL) | |
622 | printk("10Mb/s, Full Duplex.\n"); | |
623 | else | |
624 | printk("10Mb/s, Half Duplex.\n"); | |
625 | } | |
626 | } | |
627 | ||
628 | static void display_forced_link_mode(struct happy_meal *hp, void __iomem *tregs) | |
629 | { | |
630 | printk(KERN_INFO "%s: Link has been forced up using ", hp->dev->name); | |
631 | if (hp->tcvr_type == external) | |
632 | printk("external "); | |
633 | else | |
634 | printk("internal "); | |
635 | printk("transceiver at "); | |
636 | hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
637 | if (hp->sw_bmcr & BMCR_SPEED100) | |
638 | printk("100Mb/s, "); | |
639 | else | |
640 | printk("10Mb/s, "); | |
641 | if (hp->sw_bmcr & BMCR_FULLDPLX) | |
642 | printk("Full Duplex.\n"); | |
643 | else | |
644 | printk("Half Duplex.\n"); | |
645 | } | |
646 | ||
647 | static int set_happy_link_modes(struct happy_meal *hp, void __iomem *tregs) | |
648 | { | |
649 | int full; | |
650 | ||
651 | /* All we care about is making sure the bigmac tx_cfg has a | |
652 | * proper duplex setting. | |
653 | */ | |
654 | if (hp->timer_state == arbwait) { | |
655 | hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA); | |
656 | if (!(hp->sw_lpa & (LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL))) | |
657 | goto no_response; | |
658 | if (hp->sw_lpa & LPA_100FULL) | |
659 | full = 1; | |
660 | else if (hp->sw_lpa & LPA_100HALF) | |
661 | full = 0; | |
662 | else if (hp->sw_lpa & LPA_10FULL) | |
663 | full = 1; | |
664 | else | |
665 | full = 0; | |
666 | } else { | |
667 | /* Forcing a link mode. */ | |
668 | hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
669 | if (hp->sw_bmcr & BMCR_FULLDPLX) | |
670 | full = 1; | |
671 | else | |
672 | full = 0; | |
673 | } | |
674 | ||
675 | /* Before changing other bits in the tx_cfg register, and in | |
676 | * general any of other the TX config registers too, you | |
677 | * must: | |
678 | * 1) Clear Enable | |
679 | * 2) Poll with reads until that bit reads back as zero | |
680 | * 3) Make TX configuration changes | |
681 | * 4) Set Enable once more | |
682 | */ | |
683 | hme_write32(hp, hp->bigmacregs + BMAC_TXCFG, | |
684 | hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) & | |
685 | ~(BIGMAC_TXCFG_ENABLE)); | |
686 | while (hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) & BIGMAC_TXCFG_ENABLE) | |
687 | barrier(); | |
688 | if (full) { | |
689 | hp->happy_flags |= HFLAG_FULL; | |
690 | hme_write32(hp, hp->bigmacregs + BMAC_TXCFG, | |
691 | hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) | | |
692 | BIGMAC_TXCFG_FULLDPLX); | |
693 | } else { | |
694 | hp->happy_flags &= ~(HFLAG_FULL); | |
695 | hme_write32(hp, hp->bigmacregs + BMAC_TXCFG, | |
696 | hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) & | |
697 | ~(BIGMAC_TXCFG_FULLDPLX)); | |
698 | } | |
699 | hme_write32(hp, hp->bigmacregs + BMAC_TXCFG, | |
700 | hme_read32(hp, hp->bigmacregs + BMAC_TXCFG) | | |
701 | BIGMAC_TXCFG_ENABLE); | |
702 | return 0; | |
703 | no_response: | |
704 | return 1; | |
705 | } | |
706 | ||
707 | static int happy_meal_init(struct happy_meal *hp); | |
708 | ||
709 | static int is_lucent_phy(struct happy_meal *hp) | |
710 | { | |
711 | void __iomem *tregs = hp->tcvregs; | |
712 | unsigned short mr2, mr3; | |
713 | int ret = 0; | |
714 | ||
715 | mr2 = happy_meal_tcvr_read(hp, tregs, 2); | |
716 | mr3 = happy_meal_tcvr_read(hp, tregs, 3); | |
717 | if ((mr2 & 0xffff) == 0x0180 && | |
718 | ((mr3 & 0xffff) >> 10) == 0x1d) | |
719 | ret = 1; | |
720 | ||
721 | return ret; | |
722 | } | |
723 | ||
724 | static void happy_meal_timer(unsigned long data) | |
725 | { | |
726 | struct happy_meal *hp = (struct happy_meal *) data; | |
727 | void __iomem *tregs = hp->tcvregs; | |
728 | int restart_timer = 0; | |
729 | ||
730 | spin_lock_irq(&hp->happy_lock); | |
731 | ||
732 | hp->timer_ticks++; | |
733 | switch(hp->timer_state) { | |
734 | case arbwait: | |
735 | /* Only allow for 5 ticks, thats 10 seconds and much too | |
736 | * long to wait for arbitration to complete. | |
737 | */ | |
738 | if (hp->timer_ticks >= 10) { | |
739 | /* Enter force mode. */ | |
740 | do_force_mode: | |
741 | hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
742 | printk(KERN_NOTICE "%s: Auto-Negotiation unsuccessful, trying force link mode\n", | |
743 | hp->dev->name); | |
744 | hp->sw_bmcr = BMCR_SPEED100; | |
745 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); | |
746 | ||
747 | if (!is_lucent_phy(hp)) { | |
748 | /* OK, seems we need do disable the transceiver for the first | |
749 | * tick to make sure we get an accurate link state at the | |
750 | * second tick. | |
751 | */ | |
752 | hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG); | |
753 | hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB); | |
754 | happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, hp->sw_csconfig); | |
755 | } | |
756 | hp->timer_state = ltrywait; | |
757 | hp->timer_ticks = 0; | |
758 | restart_timer = 1; | |
759 | } else { | |
760 | /* Anything interesting happen? */ | |
761 | hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); | |
762 | if (hp->sw_bmsr & BMSR_ANEGCOMPLETE) { | |
763 | int ret; | |
764 | ||
765 | /* Just what we've been waiting for... */ | |
766 | ret = set_happy_link_modes(hp, tregs); | |
767 | if (ret) { | |
768 | /* Ooops, something bad happened, go to force | |
769 | * mode. | |
770 | * | |
771 | * XXX Broken hubs which don't support 802.3u | |
772 | * XXX auto-negotiation make this happen as well. | |
773 | */ | |
774 | goto do_force_mode; | |
775 | } | |
776 | ||
777 | /* Success, at least so far, advance our state engine. */ | |
778 | hp->timer_state = lupwait; | |
779 | restart_timer = 1; | |
780 | } else { | |
781 | restart_timer = 1; | |
782 | } | |
783 | } | |
784 | break; | |
785 | ||
786 | case lupwait: | |
787 | /* Auto negotiation was successful and we are awaiting a | |
788 | * link up status. I have decided to let this timer run | |
789 | * forever until some sort of error is signalled, reporting | |
790 | * a message to the user at 10 second intervals. | |
791 | */ | |
792 | hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); | |
793 | if (hp->sw_bmsr & BMSR_LSTATUS) { | |
794 | /* Wheee, it's up, display the link mode in use and put | |
795 | * the timer to sleep. | |
796 | */ | |
797 | display_link_mode(hp, tregs); | |
798 | hp->timer_state = asleep; | |
799 | restart_timer = 0; | |
800 | } else { | |
801 | if (hp->timer_ticks >= 10) { | |
802 | printk(KERN_NOTICE "%s: Auto negotiation successful, link still " | |
803 | "not completely up.\n", hp->dev->name); | |
804 | hp->timer_ticks = 0; | |
805 | restart_timer = 1; | |
806 | } else { | |
807 | restart_timer = 1; | |
808 | } | |
809 | } | |
810 | break; | |
811 | ||
812 | case ltrywait: | |
813 | /* Making the timeout here too long can make it take | |
814 | * annoyingly long to attempt all of the link mode | |
815 | * permutations, but then again this is essentially | |
816 | * error recovery code for the most part. | |
817 | */ | |
818 | hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); | |
819 | hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, DP83840_CSCONFIG); | |
820 | if (hp->timer_ticks == 1) { | |
821 | if (!is_lucent_phy(hp)) { | |
822 | /* Re-enable transceiver, we'll re-enable the transceiver next | |
823 | * tick, then check link state on the following tick. | |
824 | */ | |
825 | hp->sw_csconfig |= CSCONFIG_TCVDISAB; | |
826 | happy_meal_tcvr_write(hp, tregs, | |
827 | DP83840_CSCONFIG, hp->sw_csconfig); | |
828 | } | |
829 | restart_timer = 1; | |
830 | break; | |
831 | } | |
832 | if (hp->timer_ticks == 2) { | |
833 | if (!is_lucent_phy(hp)) { | |
834 | hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB); | |
835 | happy_meal_tcvr_write(hp, tregs, | |
836 | DP83840_CSCONFIG, hp->sw_csconfig); | |
837 | } | |
838 | restart_timer = 1; | |
839 | break; | |
840 | } | |
841 | if (hp->sw_bmsr & BMSR_LSTATUS) { | |
842 | /* Force mode selection success. */ | |
843 | display_forced_link_mode(hp, tregs); | |
844 | set_happy_link_modes(hp, tregs); /* XXX error? then what? */ | |
845 | hp->timer_state = asleep; | |
846 | restart_timer = 0; | |
847 | } else { | |
848 | if (hp->timer_ticks >= 4) { /* 6 seconds or so... */ | |
849 | int ret; | |
850 | ||
851 | ret = try_next_permutation(hp, tregs); | |
852 | if (ret == -1) { | |
853 | /* Aieee, tried them all, reset the | |
854 | * chip and try all over again. | |
855 | */ | |
856 | ||
857 | /* Let the user know... */ | |
858 | printk(KERN_NOTICE "%s: Link down, cable problem?\n", | |
859 | hp->dev->name); | |
860 | ||
861 | ret = happy_meal_init(hp); | |
862 | if (ret) { | |
863 | /* ho hum... */ | |
864 | printk(KERN_ERR "%s: Error, cannot re-init the " | |
865 | "Happy Meal.\n", hp->dev->name); | |
866 | } | |
867 | goto out; | |
868 | } | |
869 | if (!is_lucent_phy(hp)) { | |
870 | hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, | |
871 | DP83840_CSCONFIG); | |
872 | hp->sw_csconfig |= CSCONFIG_TCVDISAB; | |
873 | happy_meal_tcvr_write(hp, tregs, | |
874 | DP83840_CSCONFIG, hp->sw_csconfig); | |
875 | } | |
876 | hp->timer_ticks = 0; | |
877 | restart_timer = 1; | |
878 | } else { | |
879 | restart_timer = 1; | |
880 | } | |
881 | } | |
882 | break; | |
883 | ||
884 | case asleep: | |
885 | default: | |
886 | /* Can't happens.... */ | |
887 | printk(KERN_ERR "%s: Aieee, link timer is asleep but we got one anyways!\n", | |
888 | hp->dev->name); | |
889 | restart_timer = 0; | |
890 | hp->timer_ticks = 0; | |
891 | hp->timer_state = asleep; /* foo on you */ | |
892 | break; | |
893 | }; | |
894 | ||
895 | if (restart_timer) { | |
896 | hp->happy_timer.expires = jiffies + ((12 * HZ)/10); /* 1.2 sec. */ | |
897 | add_timer(&hp->happy_timer); | |
898 | } | |
899 | ||
900 | out: | |
901 | spin_unlock_irq(&hp->happy_lock); | |
902 | } | |
903 | ||
904 | #define TX_RESET_TRIES 32 | |
905 | #define RX_RESET_TRIES 32 | |
906 | ||
907 | /* hp->happy_lock must be held */ | |
908 | static void happy_meal_tx_reset(struct happy_meal *hp, void __iomem *bregs) | |
909 | { | |
910 | int tries = TX_RESET_TRIES; | |
911 | ||
912 | HMD(("happy_meal_tx_reset: reset, ")); | |
913 | ||
914 | /* Would you like to try our SMCC Delux? */ | |
915 | hme_write32(hp, bregs + BMAC_TXSWRESET, 0); | |
916 | while ((hme_read32(hp, bregs + BMAC_TXSWRESET) & 1) && --tries) | |
917 | udelay(20); | |
918 | ||
919 | /* Lettuce, tomato, buggy hardware (no extra charge)? */ | |
920 | if (!tries) | |
921 | printk(KERN_ERR "happy meal: Transceiver BigMac ATTACK!"); | |
922 | ||
923 | /* Take care. */ | |
924 | HMD(("done\n")); | |
925 | } | |
926 | ||
927 | /* hp->happy_lock must be held */ | |
928 | static void happy_meal_rx_reset(struct happy_meal *hp, void __iomem *bregs) | |
929 | { | |
930 | int tries = RX_RESET_TRIES; | |
931 | ||
932 | HMD(("happy_meal_rx_reset: reset, ")); | |
933 | ||
934 | /* We have a special on GNU/Viking hardware bugs today. */ | |
935 | hme_write32(hp, bregs + BMAC_RXSWRESET, 0); | |
936 | while ((hme_read32(hp, bregs + BMAC_RXSWRESET) & 1) && --tries) | |
937 | udelay(20); | |
938 | ||
939 | /* Will that be all? */ | |
940 | if (!tries) | |
941 | printk(KERN_ERR "happy meal: Receiver BigMac ATTACK!"); | |
942 | ||
943 | /* Don't forget your vik_1137125_wa. Have a nice day. */ | |
944 | HMD(("done\n")); | |
945 | } | |
946 | ||
947 | #define STOP_TRIES 16 | |
948 | ||
949 | /* hp->happy_lock must be held */ | |
950 | static void happy_meal_stop(struct happy_meal *hp, void __iomem *gregs) | |
951 | { | |
952 | int tries = STOP_TRIES; | |
953 | ||
954 | HMD(("happy_meal_stop: reset, ")); | |
955 | ||
956 | /* We're consolidating our STB products, it's your lucky day. */ | |
957 | hme_write32(hp, gregs + GREG_SWRESET, GREG_RESET_ALL); | |
958 | while (hme_read32(hp, gregs + GREG_SWRESET) && --tries) | |
959 | udelay(20); | |
960 | ||
961 | /* Come back next week when we are "Sun Microelectronics". */ | |
962 | if (!tries) | |
963 | printk(KERN_ERR "happy meal: Fry guys."); | |
964 | ||
965 | /* Remember: "Different name, same old buggy as shit hardware." */ | |
966 | HMD(("done\n")); | |
967 | } | |
968 | ||
969 | /* hp->happy_lock must be held */ | |
970 | static void happy_meal_get_counters(struct happy_meal *hp, void __iomem *bregs) | |
971 | { | |
972 | struct net_device_stats *stats = &hp->net_stats; | |
973 | ||
974 | stats->rx_crc_errors += hme_read32(hp, bregs + BMAC_RCRCECTR); | |
975 | hme_write32(hp, bregs + BMAC_RCRCECTR, 0); | |
976 | ||
977 | stats->rx_frame_errors += hme_read32(hp, bregs + BMAC_UNALECTR); | |
978 | hme_write32(hp, bregs + BMAC_UNALECTR, 0); | |
979 | ||
980 | stats->rx_length_errors += hme_read32(hp, bregs + BMAC_GLECTR); | |
981 | hme_write32(hp, bregs + BMAC_GLECTR, 0); | |
982 | ||
983 | stats->tx_aborted_errors += hme_read32(hp, bregs + BMAC_EXCTR); | |
984 | ||
985 | stats->collisions += | |
986 | (hme_read32(hp, bregs + BMAC_EXCTR) + | |
987 | hme_read32(hp, bregs + BMAC_LTCTR)); | |
988 | hme_write32(hp, bregs + BMAC_EXCTR, 0); | |
989 | hme_write32(hp, bregs + BMAC_LTCTR, 0); | |
990 | } | |
991 | ||
992 | /* hp->happy_lock must be held */ | |
993 | static void happy_meal_poll_stop(struct happy_meal *hp, void __iomem *tregs) | |
994 | { | |
995 | ASD(("happy_meal_poll_stop: ")); | |
996 | ||
997 | /* If polling disabled or not polling already, nothing to do. */ | |
998 | if ((hp->happy_flags & (HFLAG_POLLENABLE | HFLAG_POLL)) != | |
999 | (HFLAG_POLLENABLE | HFLAG_POLL)) { | |
1000 | HMD(("not polling, return\n")); | |
1001 | return; | |
1002 | } | |
1003 | ||
1004 | /* Shut up the MIF. */ | |
1005 | ASD(("were polling, mif ints off, ")); | |
1006 | hme_write32(hp, tregs + TCVR_IMASK, 0xffff); | |
1007 | ||
1008 | /* Turn off polling. */ | |
1009 | ASD(("polling off, ")); | |
1010 | hme_write32(hp, tregs + TCVR_CFG, | |
1011 | hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_PENABLE)); | |
1012 | ||
1013 | /* We are no longer polling. */ | |
1014 | hp->happy_flags &= ~(HFLAG_POLL); | |
1015 | ||
1016 | /* Let the bits set. */ | |
1017 | udelay(200); | |
1018 | ASD(("done\n")); | |
1019 | } | |
1020 | ||
1021 | /* Only Sun can take such nice parts and fuck up the programming interface | |
1022 | * like this. Good job guys... | |
1023 | */ | |
1024 | #define TCVR_RESET_TRIES 16 /* It should reset quickly */ | |
1025 | #define TCVR_UNISOLATE_TRIES 32 /* Dis-isolation can take longer. */ | |
1026 | ||
1027 | /* hp->happy_lock must be held */ | |
1028 | static int happy_meal_tcvr_reset(struct happy_meal *hp, void __iomem *tregs) | |
1029 | { | |
1030 | u32 tconfig; | |
1031 | int result, tries = TCVR_RESET_TRIES; | |
1032 | ||
1033 | tconfig = hme_read32(hp, tregs + TCVR_CFG); | |
1034 | ASD(("happy_meal_tcvr_reset: tcfg<%08lx> ", tconfig)); | |
1035 | if (hp->tcvr_type == external) { | |
1036 | ASD(("external<")); | |
1037 | hme_write32(hp, tregs + TCVR_CFG, tconfig & ~(TCV_CFG_PSELECT)); | |
1038 | hp->tcvr_type = internal; | |
1039 | hp->paddr = TCV_PADDR_ITX; | |
1040 | ASD(("ISOLATE,")); | |
1041 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, | |
1042 | (BMCR_LOOPBACK|BMCR_PDOWN|BMCR_ISOLATE)); | |
1043 | result = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
1044 | if (result == TCVR_FAILURE) { | |
1045 | ASD(("phyread_fail>\n")); | |
1046 | return -1; | |
1047 | } | |
1048 | ASD(("phyread_ok,PSELECT>")); | |
1049 | hme_write32(hp, tregs + TCVR_CFG, tconfig | TCV_CFG_PSELECT); | |
1050 | hp->tcvr_type = external; | |
1051 | hp->paddr = TCV_PADDR_ETX; | |
1052 | } else { | |
1053 | if (tconfig & TCV_CFG_MDIO1) { | |
1054 | ASD(("internal<PSELECT,")); | |
1055 | hme_write32(hp, tregs + TCVR_CFG, (tconfig | TCV_CFG_PSELECT)); | |
1056 | ASD(("ISOLATE,")); | |
1057 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, | |
1058 | (BMCR_LOOPBACK|BMCR_PDOWN|BMCR_ISOLATE)); | |
1059 | result = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
1060 | if (result == TCVR_FAILURE) { | |
1061 | ASD(("phyread_fail>\n")); | |
1062 | return -1; | |
1063 | } | |
1064 | ASD(("phyread_ok,~PSELECT>")); | |
1065 | hme_write32(hp, tregs + TCVR_CFG, (tconfig & ~(TCV_CFG_PSELECT))); | |
1066 | hp->tcvr_type = internal; | |
1067 | hp->paddr = TCV_PADDR_ITX; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | ASD(("BMCR_RESET ")); | |
1072 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, BMCR_RESET); | |
1073 | ||
1074 | while (--tries) { | |
1075 | result = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
1076 | if (result == TCVR_FAILURE) | |
1077 | return -1; | |
1078 | hp->sw_bmcr = result; | |
1079 | if (!(result & BMCR_RESET)) | |
1080 | break; | |
1081 | udelay(20); | |
1082 | } | |
1083 | if (!tries) { | |
1084 | ASD(("BMCR RESET FAILED!\n")); | |
1085 | return -1; | |
1086 | } | |
1087 | ASD(("RESET_OK\n")); | |
1088 | ||
1089 | /* Get fresh copies of the PHY registers. */ | |
1090 | hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); | |
1091 | hp->sw_physid1 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID1); | |
1092 | hp->sw_physid2 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID2); | |
1093 | hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE); | |
1094 | ||
1095 | ASD(("UNISOLATE")); | |
1096 | hp->sw_bmcr &= ~(BMCR_ISOLATE); | |
1097 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); | |
1098 | ||
1099 | tries = TCVR_UNISOLATE_TRIES; | |
1100 | while (--tries) { | |
1101 | result = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
1102 | if (result == TCVR_FAILURE) | |
1103 | return -1; | |
1104 | if (!(result & BMCR_ISOLATE)) | |
1105 | break; | |
1106 | udelay(20); | |
1107 | } | |
1108 | if (!tries) { | |
1109 | ASD((" FAILED!\n")); | |
1110 | return -1; | |
1111 | } | |
1112 | ASD((" SUCCESS and CSCONFIG_DFBYPASS\n")); | |
1113 | if (!is_lucent_phy(hp)) { | |
1114 | result = happy_meal_tcvr_read(hp, tregs, | |
1115 | DP83840_CSCONFIG); | |
1116 | happy_meal_tcvr_write(hp, tregs, | |
1117 | DP83840_CSCONFIG, (result | CSCONFIG_DFBYPASS)); | |
1118 | } | |
1119 | return 0; | |
1120 | } | |
1121 | ||
1122 | /* Figure out whether we have an internal or external transceiver. | |
1123 | * | |
1124 | * hp->happy_lock must be held | |
1125 | */ | |
1126 | static void happy_meal_transceiver_check(struct happy_meal *hp, void __iomem *tregs) | |
1127 | { | |
1128 | unsigned long tconfig = hme_read32(hp, tregs + TCVR_CFG); | |
1129 | ||
1130 | ASD(("happy_meal_transceiver_check: tcfg=%08lx ", tconfig)); | |
1131 | if (hp->happy_flags & HFLAG_POLL) { | |
1132 | /* If we are polling, we must stop to get the transceiver type. */ | |
1133 | ASD(("<polling> ")); | |
1134 | if (hp->tcvr_type == internal) { | |
1135 | if (tconfig & TCV_CFG_MDIO1) { | |
1136 | ASD(("<internal> <poll stop> ")); | |
1137 | happy_meal_poll_stop(hp, tregs); | |
1138 | hp->paddr = TCV_PADDR_ETX; | |
1139 | hp->tcvr_type = external; | |
1140 | ASD(("<external>\n")); | |
1141 | tconfig &= ~(TCV_CFG_PENABLE); | |
1142 | tconfig |= TCV_CFG_PSELECT; | |
1143 | hme_write32(hp, tregs + TCVR_CFG, tconfig); | |
1144 | } | |
1145 | } else { | |
1146 | if (hp->tcvr_type == external) { | |
1147 | ASD(("<external> ")); | |
1148 | if (!(hme_read32(hp, tregs + TCVR_STATUS) >> 16)) { | |
1149 | ASD(("<poll stop> ")); | |
1150 | happy_meal_poll_stop(hp, tregs); | |
1151 | hp->paddr = TCV_PADDR_ITX; | |
1152 | hp->tcvr_type = internal; | |
1153 | ASD(("<internal>\n")); | |
1154 | hme_write32(hp, tregs + TCVR_CFG, | |
1155 | hme_read32(hp, tregs + TCVR_CFG) & | |
1156 | ~(TCV_CFG_PSELECT)); | |
1157 | } | |
1158 | ASD(("\n")); | |
1159 | } else { | |
1160 | ASD(("<none>\n")); | |
1161 | } | |
1162 | } | |
1163 | } else { | |
1164 | u32 reread = hme_read32(hp, tregs + TCVR_CFG); | |
1165 | ||
1166 | /* Else we can just work off of the MDIO bits. */ | |
1167 | ASD(("<not polling> ")); | |
1168 | if (reread & TCV_CFG_MDIO1) { | |
1169 | hme_write32(hp, tregs + TCVR_CFG, tconfig | TCV_CFG_PSELECT); | |
1170 | hp->paddr = TCV_PADDR_ETX; | |
1171 | hp->tcvr_type = external; | |
1172 | ASD(("<external>\n")); | |
1173 | } else { | |
1174 | if (reread & TCV_CFG_MDIO0) { | |
1175 | hme_write32(hp, tregs + TCVR_CFG, | |
1176 | tconfig & ~(TCV_CFG_PSELECT)); | |
1177 | hp->paddr = TCV_PADDR_ITX; | |
1178 | hp->tcvr_type = internal; | |
1179 | ASD(("<internal>\n")); | |
1180 | } else { | |
1181 | printk(KERN_ERR "happy meal: Transceiver and a coke please."); | |
1182 | hp->tcvr_type = none; /* Grrr... */ | |
1183 | ASD(("<none>\n")); | |
1184 | } | |
1185 | } | |
1186 | } | |
1187 | } | |
1188 | ||
1189 | /* The receive ring buffers are a bit tricky to get right. Here goes... | |
1190 | * | |
1191 | * The buffers we dma into must be 64 byte aligned. So we use a special | |
1192 | * alloc_skb() routine for the happy meal to allocate 64 bytes more than | |
1193 | * we really need. | |
1194 | * | |
1195 | * We use skb_reserve() to align the data block we get in the skb. We | |
1196 | * also program the etxregs->cfg register to use an offset of 2. This | |
1197 | * imperical constant plus the ethernet header size will always leave | |
1198 | * us with a nicely aligned ip header once we pass things up to the | |
1199 | * protocol layers. | |
1200 | * | |
1201 | * The numbers work out to: | |
1202 | * | |
1203 | * Max ethernet frame size 1518 | |
1204 | * Ethernet header size 14 | |
1205 | * Happy Meal base offset 2 | |
1206 | * | |
1207 | * Say a skb data area is at 0xf001b010, and its size alloced is | |
1208 | * (ETH_FRAME_LEN + 64 + 2) = (1514 + 64 + 2) = 1580 bytes. | |
1209 | * | |
1210 | * First our alloc_skb() routine aligns the data base to a 64 byte | |
1211 | * boundary. We now have 0xf001b040 as our skb data address. We | |
1212 | * plug this into the receive descriptor address. | |
1213 | * | |
1214 | * Next, we skb_reserve() 2 bytes to account for the Happy Meal offset. | |
1215 | * So now the data we will end up looking at starts at 0xf001b042. When | |
1216 | * the packet arrives, we will check out the size received and subtract | |
1217 | * this from the skb->length. Then we just pass the packet up to the | |
1218 | * protocols as is, and allocate a new skb to replace this slot we have | |
1219 | * just received from. | |
1220 | * | |
1221 | * The ethernet layer will strip the ether header from the front of the | |
1222 | * skb we just sent to it, this leaves us with the ip header sitting | |
1223 | * nicely aligned at 0xf001b050. Also, for tcp and udp packets the | |
1224 | * Happy Meal has even checksummed the tcp/udp data for us. The 16 | |
1225 | * bit checksum is obtained from the low bits of the receive descriptor | |
1226 | * flags, thus: | |
1227 | * | |
1228 | * skb->csum = rxd->rx_flags & 0xffff; | |
1229 | * skb->ip_summed = CHECKSUM_HW; | |
1230 | * | |
1231 | * before sending off the skb to the protocols, and we are good as gold. | |
1232 | */ | |
1233 | static void happy_meal_clean_rings(struct happy_meal *hp) | |
1234 | { | |
1235 | int i; | |
1236 | ||
1237 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1238 | if (hp->rx_skbs[i] != NULL) { | |
1239 | struct sk_buff *skb = hp->rx_skbs[i]; | |
1240 | struct happy_meal_rxd *rxd; | |
1241 | u32 dma_addr; | |
1242 | ||
1243 | rxd = &hp->happy_block->happy_meal_rxd[i]; | |
1244 | dma_addr = hme_read_desc32(hp, &rxd->rx_addr); | |
1245 | hme_dma_unmap(hp, dma_addr, RX_BUF_ALLOC_SIZE, DMA_FROMDEVICE); | |
1246 | dev_kfree_skb_any(skb); | |
1247 | hp->rx_skbs[i] = NULL; | |
1248 | } | |
1249 | } | |
1250 | ||
1251 | for (i = 0; i < TX_RING_SIZE; i++) { | |
1252 | if (hp->tx_skbs[i] != NULL) { | |
1253 | struct sk_buff *skb = hp->tx_skbs[i]; | |
1254 | struct happy_meal_txd *txd; | |
1255 | u32 dma_addr; | |
1256 | int frag; | |
1257 | ||
1258 | hp->tx_skbs[i] = NULL; | |
1259 | ||
1260 | for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) { | |
1261 | txd = &hp->happy_block->happy_meal_txd[i]; | |
1262 | dma_addr = hme_read_desc32(hp, &txd->tx_addr); | |
1263 | hme_dma_unmap(hp, dma_addr, | |
1264 | (hme_read_desc32(hp, &txd->tx_flags) | |
1265 | & TXFLAG_SIZE), | |
1266 | DMA_TODEVICE); | |
1267 | ||
1268 | if (frag != skb_shinfo(skb)->nr_frags) | |
1269 | i++; | |
1270 | } | |
1271 | ||
1272 | dev_kfree_skb_any(skb); | |
1273 | } | |
1274 | } | |
1275 | } | |
1276 | ||
1277 | /* hp->happy_lock must be held */ | |
1278 | static void happy_meal_init_rings(struct happy_meal *hp) | |
1279 | { | |
1280 | struct hmeal_init_block *hb = hp->happy_block; | |
1281 | struct net_device *dev = hp->dev; | |
1282 | int i; | |
1283 | ||
1284 | HMD(("happy_meal_init_rings: counters to zero, ")); | |
1285 | hp->rx_new = hp->rx_old = hp->tx_new = hp->tx_old = 0; | |
1286 | ||
1287 | /* Free any skippy bufs left around in the rings. */ | |
1288 | HMD(("clean, ")); | |
1289 | happy_meal_clean_rings(hp); | |
1290 | ||
1291 | /* Now get new skippy bufs for the receive ring. */ | |
1292 | HMD(("init rxring, ")); | |
1293 | for (i = 0; i < RX_RING_SIZE; i++) { | |
1294 | struct sk_buff *skb; | |
1295 | ||
1296 | skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC); | |
1297 | if (!skb) { | |
1298 | hme_write_rxd(hp, &hb->happy_meal_rxd[i], 0, 0); | |
1299 | continue; | |
1300 | } | |
1301 | hp->rx_skbs[i] = skb; | |
1302 | skb->dev = dev; | |
1303 | ||
1304 | /* Because we reserve afterwards. */ | |
1305 | skb_put(skb, (ETH_FRAME_LEN + RX_OFFSET)); | |
1306 | hme_write_rxd(hp, &hb->happy_meal_rxd[i], | |
1307 | (RXFLAG_OWN | ((RX_BUF_ALLOC_SIZE - RX_OFFSET) << 16)), | |
1308 | hme_dma_map(hp, skb->data, RX_BUF_ALLOC_SIZE, DMA_FROMDEVICE)); | |
1309 | skb_reserve(skb, RX_OFFSET); | |
1310 | } | |
1311 | ||
1312 | HMD(("init txring, ")); | |
1313 | for (i = 0; i < TX_RING_SIZE; i++) | |
1314 | hme_write_txd(hp, &hb->happy_meal_txd[i], 0, 0); | |
1315 | ||
1316 | HMD(("done\n")); | |
1317 | } | |
1318 | ||
1319 | /* hp->happy_lock must be held */ | |
1320 | static void happy_meal_begin_auto_negotiation(struct happy_meal *hp, | |
1321 | void __iomem *tregs, | |
1322 | struct ethtool_cmd *ep) | |
1323 | { | |
1324 | int timeout; | |
1325 | ||
1326 | /* Read all of the registers we are interested in now. */ | |
1327 | hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); | |
1328 | hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
1329 | hp->sw_physid1 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID1); | |
1330 | hp->sw_physid2 = happy_meal_tcvr_read(hp, tregs, MII_PHYSID2); | |
1331 | ||
1332 | /* XXX Check BMSR_ANEGCAPABLE, should not be necessary though. */ | |
1333 | ||
1334 | hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE); | |
1335 | if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) { | |
1336 | /* Advertise everything we can support. */ | |
1337 | if (hp->sw_bmsr & BMSR_10HALF) | |
1338 | hp->sw_advertise |= (ADVERTISE_10HALF); | |
1339 | else | |
1340 | hp->sw_advertise &= ~(ADVERTISE_10HALF); | |
1341 | ||
1342 | if (hp->sw_bmsr & BMSR_10FULL) | |
1343 | hp->sw_advertise |= (ADVERTISE_10FULL); | |
1344 | else | |
1345 | hp->sw_advertise &= ~(ADVERTISE_10FULL); | |
1346 | if (hp->sw_bmsr & BMSR_100HALF) | |
1347 | hp->sw_advertise |= (ADVERTISE_100HALF); | |
1348 | else | |
1349 | hp->sw_advertise &= ~(ADVERTISE_100HALF); | |
1350 | if (hp->sw_bmsr & BMSR_100FULL) | |
1351 | hp->sw_advertise |= (ADVERTISE_100FULL); | |
1352 | else | |
1353 | hp->sw_advertise &= ~(ADVERTISE_100FULL); | |
1354 | happy_meal_tcvr_write(hp, tregs, MII_ADVERTISE, hp->sw_advertise); | |
1355 | ||
1356 | /* XXX Currently no Happy Meal cards I know off support 100BaseT4, | |
1357 | * XXX and this is because the DP83840 does not support it, changes | |
1358 | * XXX would need to be made to the tx/rx logic in the driver as well | |
1359 | * XXX so I completely skip checking for it in the BMSR for now. | |
1360 | */ | |
1361 | ||
1362 | #ifdef AUTO_SWITCH_DEBUG | |
1363 | ASD(("%s: Advertising [ ", hp->dev->name)); | |
1364 | if (hp->sw_advertise & ADVERTISE_10HALF) | |
1365 | ASD(("10H ")); | |
1366 | if (hp->sw_advertise & ADVERTISE_10FULL) | |
1367 | ASD(("10F ")); | |
1368 | if (hp->sw_advertise & ADVERTISE_100HALF) | |
1369 | ASD(("100H ")); | |
1370 | if (hp->sw_advertise & ADVERTISE_100FULL) | |
1371 | ASD(("100F ")); | |
1372 | #endif | |
1373 | ||
1374 | /* Enable Auto-Negotiation, this is usually on already... */ | |
1375 | hp->sw_bmcr |= BMCR_ANENABLE; | |
1376 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); | |
1377 | ||
1378 | /* Restart it to make sure it is going. */ | |
1379 | hp->sw_bmcr |= BMCR_ANRESTART; | |
1380 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); | |
1381 | ||
1382 | /* BMCR_ANRESTART self clears when the process has begun. */ | |
1383 | ||
1384 | timeout = 64; /* More than enough. */ | |
1385 | while (--timeout) { | |
1386 | hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
1387 | if (!(hp->sw_bmcr & BMCR_ANRESTART)) | |
1388 | break; /* got it. */ | |
1389 | udelay(10); | |
1390 | } | |
1391 | if (!timeout) { | |
1392 | printk(KERN_ERR "%s: Happy Meal would not start auto negotiation " | |
1393 | "BMCR=0x%04x\n", hp->dev->name, hp->sw_bmcr); | |
1394 | printk(KERN_NOTICE "%s: Performing force link detection.\n", | |
1395 | hp->dev->name); | |
1396 | goto force_link; | |
1397 | } else { | |
1398 | hp->timer_state = arbwait; | |
1399 | } | |
1400 | } else { | |
1401 | force_link: | |
1402 | /* Force the link up, trying first a particular mode. | |
1403 | * Either we are here at the request of ethtool or | |
1404 | * because the Happy Meal would not start to autoneg. | |
1405 | */ | |
1406 | ||
1407 | /* Disable auto-negotiation in BMCR, enable the duplex and | |
1408 | * speed setting, init the timer state machine, and fire it off. | |
1409 | */ | |
1410 | if (ep == NULL || ep->autoneg == AUTONEG_ENABLE) { | |
1411 | hp->sw_bmcr = BMCR_SPEED100; | |
1412 | } else { | |
1413 | if (ep->speed == SPEED_100) | |
1414 | hp->sw_bmcr = BMCR_SPEED100; | |
1415 | else | |
1416 | hp->sw_bmcr = 0; | |
1417 | if (ep->duplex == DUPLEX_FULL) | |
1418 | hp->sw_bmcr |= BMCR_FULLDPLX; | |
1419 | } | |
1420 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); | |
1421 | ||
1422 | if (!is_lucent_phy(hp)) { | |
1423 | /* OK, seems we need do disable the transceiver for the first | |
1424 | * tick to make sure we get an accurate link state at the | |
1425 | * second tick. | |
1426 | */ | |
1427 | hp->sw_csconfig = happy_meal_tcvr_read(hp, tregs, | |
1428 | DP83840_CSCONFIG); | |
1429 | hp->sw_csconfig &= ~(CSCONFIG_TCVDISAB); | |
1430 | happy_meal_tcvr_write(hp, tregs, DP83840_CSCONFIG, | |
1431 | hp->sw_csconfig); | |
1432 | } | |
1433 | hp->timer_state = ltrywait; | |
1434 | } | |
1435 | ||
1436 | hp->timer_ticks = 0; | |
1437 | hp->happy_timer.expires = jiffies + (12 * HZ)/10; /* 1.2 sec. */ | |
1438 | hp->happy_timer.data = (unsigned long) hp; | |
1439 | hp->happy_timer.function = &happy_meal_timer; | |
1440 | add_timer(&hp->happy_timer); | |
1441 | } | |
1442 | ||
1443 | /* hp->happy_lock must be held */ | |
1444 | static int happy_meal_init(struct happy_meal *hp) | |
1445 | { | |
1446 | void __iomem *gregs = hp->gregs; | |
1447 | void __iomem *etxregs = hp->etxregs; | |
1448 | void __iomem *erxregs = hp->erxregs; | |
1449 | void __iomem *bregs = hp->bigmacregs; | |
1450 | void __iomem *tregs = hp->tcvregs; | |
1451 | u32 regtmp, rxcfg; | |
1452 | unsigned char *e = &hp->dev->dev_addr[0]; | |
1453 | ||
1454 | /* If auto-negotiation timer is running, kill it. */ | |
1455 | del_timer(&hp->happy_timer); | |
1456 | ||
1457 | HMD(("happy_meal_init: happy_flags[%08x] ", | |
1458 | hp->happy_flags)); | |
1459 | if (!(hp->happy_flags & HFLAG_INIT)) { | |
1460 | HMD(("set HFLAG_INIT, ")); | |
1461 | hp->happy_flags |= HFLAG_INIT; | |
1462 | happy_meal_get_counters(hp, bregs); | |
1463 | } | |
1464 | ||
1465 | /* Stop polling. */ | |
1466 | HMD(("to happy_meal_poll_stop\n")); | |
1467 | happy_meal_poll_stop(hp, tregs); | |
1468 | ||
1469 | /* Stop transmitter and receiver. */ | |
1470 | HMD(("happy_meal_init: to happy_meal_stop\n")); | |
1471 | happy_meal_stop(hp, gregs); | |
1472 | ||
1473 | /* Alloc and reset the tx/rx descriptor chains. */ | |
1474 | HMD(("happy_meal_init: to happy_meal_init_rings\n")); | |
1475 | happy_meal_init_rings(hp); | |
1476 | ||
1477 | /* Shut up the MIF. */ | |
1478 | HMD(("happy_meal_init: Disable all MIF irqs (old[%08x]), ", | |
1479 | hme_read32(hp, tregs + TCVR_IMASK))); | |
1480 | hme_write32(hp, tregs + TCVR_IMASK, 0xffff); | |
1481 | ||
1482 | /* See if we can enable the MIF frame on this card to speak to the DP83840. */ | |
1483 | if (hp->happy_flags & HFLAG_FENABLE) { | |
1484 | HMD(("use frame old[%08x], ", | |
1485 | hme_read32(hp, tregs + TCVR_CFG))); | |
1486 | hme_write32(hp, tregs + TCVR_CFG, | |
1487 | hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_BENABLE)); | |
1488 | } else { | |
1489 | HMD(("use bitbang old[%08x], ", | |
1490 | hme_read32(hp, tregs + TCVR_CFG))); | |
1491 | hme_write32(hp, tregs + TCVR_CFG, | |
1492 | hme_read32(hp, tregs + TCVR_CFG) | TCV_CFG_BENABLE); | |
1493 | } | |
1494 | ||
1495 | /* Check the state of the transceiver. */ | |
1496 | HMD(("to happy_meal_transceiver_check\n")); | |
1497 | happy_meal_transceiver_check(hp, tregs); | |
1498 | ||
1499 | /* Put the Big Mac into a sane state. */ | |
1500 | HMD(("happy_meal_init: ")); | |
1501 | switch(hp->tcvr_type) { | |
1502 | case none: | |
1503 | /* Cannot operate if we don't know the transceiver type! */ | |
1504 | HMD(("AAIEEE no transceiver type, EAGAIN")); | |
1505 | return -EAGAIN; | |
1506 | ||
1507 | case internal: | |
1508 | /* Using the MII buffers. */ | |
1509 | HMD(("internal, using MII, ")); | |
1510 | hme_write32(hp, bregs + BMAC_XIFCFG, 0); | |
1511 | break; | |
1512 | ||
1513 | case external: | |
1514 | /* Not using the MII, disable it. */ | |
1515 | HMD(("external, disable MII, ")); | |
1516 | hme_write32(hp, bregs + BMAC_XIFCFG, BIGMAC_XCFG_MIIDISAB); | |
1517 | break; | |
1518 | }; | |
1519 | ||
1520 | if (happy_meal_tcvr_reset(hp, tregs)) | |
1521 | return -EAGAIN; | |
1522 | ||
1523 | /* Reset the Happy Meal Big Mac transceiver and the receiver. */ | |
1524 | HMD(("tx/rx reset, ")); | |
1525 | happy_meal_tx_reset(hp, bregs); | |
1526 | happy_meal_rx_reset(hp, bregs); | |
1527 | ||
1528 | /* Set jam size and inter-packet gaps to reasonable defaults. */ | |
1529 | HMD(("jsize/ipg1/ipg2, ")); | |
1530 | hme_write32(hp, bregs + BMAC_JSIZE, DEFAULT_JAMSIZE); | |
1531 | hme_write32(hp, bregs + BMAC_IGAP1, DEFAULT_IPG1); | |
1532 | hme_write32(hp, bregs + BMAC_IGAP2, DEFAULT_IPG2); | |
1533 | ||
1534 | /* Load up the MAC address and random seed. */ | |
1535 | HMD(("rseed/macaddr, ")); | |
1536 | ||
1537 | /* The docs recommend to use the 10LSB of our MAC here. */ | |
1538 | hme_write32(hp, bregs + BMAC_RSEED, ((e[5] | e[4]<<8)&0x3ff)); | |
1539 | ||
1540 | hme_write32(hp, bregs + BMAC_MACADDR2, ((e[4] << 8) | e[5])); | |
1541 | hme_write32(hp, bregs + BMAC_MACADDR1, ((e[2] << 8) | e[3])); | |
1542 | hme_write32(hp, bregs + BMAC_MACADDR0, ((e[0] << 8) | e[1])); | |
1543 | ||
1544 | HMD(("htable, ")); | |
1545 | if ((hp->dev->flags & IFF_ALLMULTI) || | |
1546 | (hp->dev->mc_count > 64)) { | |
1547 | hme_write32(hp, bregs + BMAC_HTABLE0, 0xffff); | |
1548 | hme_write32(hp, bregs + BMAC_HTABLE1, 0xffff); | |
1549 | hme_write32(hp, bregs + BMAC_HTABLE2, 0xffff); | |
1550 | hme_write32(hp, bregs + BMAC_HTABLE3, 0xffff); | |
1551 | } else if ((hp->dev->flags & IFF_PROMISC) == 0) { | |
1552 | u16 hash_table[4]; | |
1553 | struct dev_mc_list *dmi = hp->dev->mc_list; | |
1554 | char *addrs; | |
1555 | int i; | |
1556 | u32 crc; | |
1557 | ||
1558 | for (i = 0; i < 4; i++) | |
1559 | hash_table[i] = 0; | |
1560 | ||
1561 | for (i = 0; i < hp->dev->mc_count; i++) { | |
1562 | addrs = dmi->dmi_addr; | |
1563 | dmi = dmi->next; | |
1564 | ||
1565 | if (!(*addrs & 1)) | |
1566 | continue; | |
1567 | ||
1568 | crc = ether_crc_le(6, addrs); | |
1569 | crc >>= 26; | |
1570 | hash_table[crc >> 4] |= 1 << (crc & 0xf); | |
1571 | } | |
1572 | hme_write32(hp, bregs + BMAC_HTABLE0, hash_table[0]); | |
1573 | hme_write32(hp, bregs + BMAC_HTABLE1, hash_table[1]); | |
1574 | hme_write32(hp, bregs + BMAC_HTABLE2, hash_table[2]); | |
1575 | hme_write32(hp, bregs + BMAC_HTABLE3, hash_table[3]); | |
1576 | } else { | |
1577 | hme_write32(hp, bregs + BMAC_HTABLE3, 0); | |
1578 | hme_write32(hp, bregs + BMAC_HTABLE2, 0); | |
1579 | hme_write32(hp, bregs + BMAC_HTABLE1, 0); | |
1580 | hme_write32(hp, bregs + BMAC_HTABLE0, 0); | |
1581 | } | |
1582 | ||
1583 | /* Set the RX and TX ring ptrs. */ | |
1584 | HMD(("ring ptrs rxr[%08x] txr[%08x]\n", | |
1585 | ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)), | |
1586 | ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_txd, 0)))); | |
1587 | hme_write32(hp, erxregs + ERX_RING, | |
1588 | ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0))); | |
1589 | hme_write32(hp, etxregs + ETX_RING, | |
1590 | ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_txd, 0))); | |
1591 | ||
1592 | /* Parity issues in the ERX unit of some HME revisions can cause some | |
1593 | * registers to not be written unless their parity is even. Detect such | |
1594 | * lost writes and simply rewrite with a low bit set (which will be ignored | |
1595 | * since the rxring needs to be 2K aligned). | |
1596 | */ | |
1597 | if (hme_read32(hp, erxregs + ERX_RING) != | |
1598 | ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0))) | |
1599 | hme_write32(hp, erxregs + ERX_RING, | |
1600 | ((__u32)hp->hblock_dvma + hblock_offset(happy_meal_rxd, 0)) | |
1601 | | 0x4); | |
1602 | ||
1603 | /* Set the supported burst sizes. */ | |
1604 | HMD(("happy_meal_init: old[%08x] bursts<", | |
1605 | hme_read32(hp, gregs + GREG_CFG))); | |
1606 | ||
1607 | #ifndef __sparc__ | |
1608 | /* It is always PCI and can handle 64byte bursts. */ | |
1609 | hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST64); | |
1610 | #else | |
1611 | if ((hp->happy_bursts & DMA_BURST64) && | |
1612 | ((hp->happy_flags & HFLAG_PCI) != 0 | |
1613 | #ifdef CONFIG_SBUS | |
1614 | || sbus_can_burst64(hp->happy_dev) | |
1615 | #endif | |
1616 | || 0)) { | |
1617 | u32 gcfg = GREG_CFG_BURST64; | |
1618 | ||
1619 | /* I have no idea if I should set the extended | |
1620 | * transfer mode bit for Cheerio, so for now I | |
1621 | * do not. -DaveM | |
1622 | */ | |
1623 | #ifdef CONFIG_SBUS | |
1624 | if ((hp->happy_flags & HFLAG_PCI) == 0 && | |
1625 | sbus_can_dma_64bit(hp->happy_dev)) { | |
1626 | sbus_set_sbus64(hp->happy_dev, | |
1627 | hp->happy_bursts); | |
1628 | gcfg |= GREG_CFG_64BIT; | |
1629 | } | |
1630 | #endif | |
1631 | ||
1632 | HMD(("64>")); | |
1633 | hme_write32(hp, gregs + GREG_CFG, gcfg); | |
1634 | } else if (hp->happy_bursts & DMA_BURST32) { | |
1635 | HMD(("32>")); | |
1636 | hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST32); | |
1637 | } else if (hp->happy_bursts & DMA_BURST16) { | |
1638 | HMD(("16>")); | |
1639 | hme_write32(hp, gregs + GREG_CFG, GREG_CFG_BURST16); | |
1640 | } else { | |
1641 | HMD(("XXX>")); | |
1642 | hme_write32(hp, gregs + GREG_CFG, 0); | |
1643 | } | |
1644 | #endif /* __sparc__ */ | |
1645 | ||
1646 | /* Turn off interrupts we do not want to hear. */ | |
1647 | HMD((", enable global interrupts, ")); | |
1648 | hme_write32(hp, gregs + GREG_IMASK, | |
1649 | (GREG_IMASK_GOTFRAME | GREG_IMASK_RCNTEXP | | |
1650 | GREG_IMASK_SENTFRAME | GREG_IMASK_TXPERR)); | |
1651 | ||
1652 | /* Set the transmit ring buffer size. */ | |
1653 | HMD(("tx rsize=%d oreg[%08x], ", (int)TX_RING_SIZE, | |
1654 | hme_read32(hp, etxregs + ETX_RSIZE))); | |
1655 | hme_write32(hp, etxregs + ETX_RSIZE, (TX_RING_SIZE >> ETX_RSIZE_SHIFT) - 1); | |
1656 | ||
1657 | /* Enable transmitter DVMA. */ | |
1658 | HMD(("tx dma enable old[%08x], ", | |
1659 | hme_read32(hp, etxregs + ETX_CFG))); | |
1660 | hme_write32(hp, etxregs + ETX_CFG, | |
1661 | hme_read32(hp, etxregs + ETX_CFG) | ETX_CFG_DMAENABLE); | |
1662 | ||
1663 | /* This chip really rots, for the receiver sometimes when you | |
1664 | * write to its control registers not all the bits get there | |
1665 | * properly. I cannot think of a sane way to provide complete | |
1666 | * coverage for this hardware bug yet. | |
1667 | */ | |
1668 | HMD(("erx regs bug old[%08x]\n", | |
1669 | hme_read32(hp, erxregs + ERX_CFG))); | |
1670 | hme_write32(hp, erxregs + ERX_CFG, ERX_CFG_DEFAULT(RX_OFFSET)); | |
1671 | regtmp = hme_read32(hp, erxregs + ERX_CFG); | |
1672 | hme_write32(hp, erxregs + ERX_CFG, ERX_CFG_DEFAULT(RX_OFFSET)); | |
1673 | if (hme_read32(hp, erxregs + ERX_CFG) != ERX_CFG_DEFAULT(RX_OFFSET)) { | |
1674 | printk(KERN_ERR "happy meal: Eieee, rx config register gets greasy fries.\n"); | |
1675 | printk(KERN_ERR "happy meal: Trying to set %08x, reread gives %08x\n", | |
1676 | ERX_CFG_DEFAULT(RX_OFFSET), regtmp); | |
1677 | /* XXX Should return failure here... */ | |
1678 | } | |
1679 | ||
1680 | /* Enable Big Mac hash table filter. */ | |
1681 | HMD(("happy_meal_init: enable hash rx_cfg_old[%08x], ", | |
1682 | hme_read32(hp, bregs + BMAC_RXCFG))); | |
1683 | rxcfg = BIGMAC_RXCFG_HENABLE | BIGMAC_RXCFG_REJME; | |
1684 | if (hp->dev->flags & IFF_PROMISC) | |
1685 | rxcfg |= BIGMAC_RXCFG_PMISC; | |
1686 | hme_write32(hp, bregs + BMAC_RXCFG, rxcfg); | |
1687 | ||
1688 | /* Let the bits settle in the chip. */ | |
1689 | udelay(10); | |
1690 | ||
1691 | /* Ok, configure the Big Mac transmitter. */ | |
1692 | HMD(("BIGMAC init, ")); | |
1693 | regtmp = 0; | |
1694 | if (hp->happy_flags & HFLAG_FULL) | |
1695 | regtmp |= BIGMAC_TXCFG_FULLDPLX; | |
1696 | ||
1697 | /* Don't turn on the "don't give up" bit for now. It could cause hme | |
1698 | * to deadlock with the PHY if a Jabber occurs. | |
1699 | */ | |
1700 | hme_write32(hp, bregs + BMAC_TXCFG, regtmp /*| BIGMAC_TXCFG_DGIVEUP*/); | |
1701 | ||
1702 | /* Give up after 16 TX attempts. */ | |
1703 | hme_write32(hp, bregs + BMAC_ALIMIT, 16); | |
1704 | ||
1705 | /* Enable the output drivers no matter what. */ | |
1706 | regtmp = BIGMAC_XCFG_ODENABLE; | |
1707 | ||
1708 | /* If card can do lance mode, enable it. */ | |
1709 | if (hp->happy_flags & HFLAG_LANCE) | |
1710 | regtmp |= (DEFAULT_IPG0 << 5) | BIGMAC_XCFG_LANCE; | |
1711 | ||
1712 | /* Disable the MII buffers if using external transceiver. */ | |
1713 | if (hp->tcvr_type == external) | |
1714 | regtmp |= BIGMAC_XCFG_MIIDISAB; | |
1715 | ||
1716 | HMD(("XIF config old[%08x], ", | |
1717 | hme_read32(hp, bregs + BMAC_XIFCFG))); | |
1718 | hme_write32(hp, bregs + BMAC_XIFCFG, regtmp); | |
1719 | ||
1720 | /* Start things up. */ | |
1721 | HMD(("tx old[%08x] and rx [%08x] ON!\n", | |
1722 | hme_read32(hp, bregs + BMAC_TXCFG), | |
1723 | hme_read32(hp, bregs + BMAC_RXCFG))); | |
1724 | hme_write32(hp, bregs + BMAC_TXCFG, | |
1725 | hme_read32(hp, bregs + BMAC_TXCFG) | BIGMAC_TXCFG_ENABLE); | |
1726 | hme_write32(hp, bregs + BMAC_RXCFG, | |
1727 | hme_read32(hp, bregs + BMAC_RXCFG) | BIGMAC_RXCFG_ENABLE); | |
1728 | ||
1729 | /* Get the autonegotiation started, and the watch timer ticking. */ | |
1730 | happy_meal_begin_auto_negotiation(hp, tregs, NULL); | |
1731 | ||
1732 | /* Success. */ | |
1733 | return 0; | |
1734 | } | |
1735 | ||
1736 | /* hp->happy_lock must be held */ | |
1737 | static void happy_meal_set_initial_advertisement(struct happy_meal *hp) | |
1738 | { | |
1739 | void __iomem *tregs = hp->tcvregs; | |
1740 | void __iomem *bregs = hp->bigmacregs; | |
1741 | void __iomem *gregs = hp->gregs; | |
1742 | ||
1743 | happy_meal_stop(hp, gregs); | |
1744 | hme_write32(hp, tregs + TCVR_IMASK, 0xffff); | |
1745 | if (hp->happy_flags & HFLAG_FENABLE) | |
1746 | hme_write32(hp, tregs + TCVR_CFG, | |
1747 | hme_read32(hp, tregs + TCVR_CFG) & ~(TCV_CFG_BENABLE)); | |
1748 | else | |
1749 | hme_write32(hp, tregs + TCVR_CFG, | |
1750 | hme_read32(hp, tregs + TCVR_CFG) | TCV_CFG_BENABLE); | |
1751 | happy_meal_transceiver_check(hp, tregs); | |
1752 | switch(hp->tcvr_type) { | |
1753 | case none: | |
1754 | return; | |
1755 | case internal: | |
1756 | hme_write32(hp, bregs + BMAC_XIFCFG, 0); | |
1757 | break; | |
1758 | case external: | |
1759 | hme_write32(hp, bregs + BMAC_XIFCFG, BIGMAC_XCFG_MIIDISAB); | |
1760 | break; | |
1761 | }; | |
1762 | if (happy_meal_tcvr_reset(hp, tregs)) | |
1763 | return; | |
1764 | ||
1765 | /* Latch PHY registers as of now. */ | |
1766 | hp->sw_bmsr = happy_meal_tcvr_read(hp, tregs, MII_BMSR); | |
1767 | hp->sw_advertise = happy_meal_tcvr_read(hp, tregs, MII_ADVERTISE); | |
1768 | ||
1769 | /* Advertise everything we can support. */ | |
1770 | if (hp->sw_bmsr & BMSR_10HALF) | |
1771 | hp->sw_advertise |= (ADVERTISE_10HALF); | |
1772 | else | |
1773 | hp->sw_advertise &= ~(ADVERTISE_10HALF); | |
1774 | ||
1775 | if (hp->sw_bmsr & BMSR_10FULL) | |
1776 | hp->sw_advertise |= (ADVERTISE_10FULL); | |
1777 | else | |
1778 | hp->sw_advertise &= ~(ADVERTISE_10FULL); | |
1779 | if (hp->sw_bmsr & BMSR_100HALF) | |
1780 | hp->sw_advertise |= (ADVERTISE_100HALF); | |
1781 | else | |
1782 | hp->sw_advertise &= ~(ADVERTISE_100HALF); | |
1783 | if (hp->sw_bmsr & BMSR_100FULL) | |
1784 | hp->sw_advertise |= (ADVERTISE_100FULL); | |
1785 | else | |
1786 | hp->sw_advertise &= ~(ADVERTISE_100FULL); | |
1787 | ||
1788 | /* Update the PHY advertisement register. */ | |
1789 | happy_meal_tcvr_write(hp, tregs, MII_ADVERTISE, hp->sw_advertise); | |
1790 | } | |
1791 | ||
1792 | /* Once status is latched (by happy_meal_interrupt) it is cleared by | |
1793 | * the hardware, so we cannot re-read it and get a correct value. | |
1794 | * | |
1795 | * hp->happy_lock must be held | |
1796 | */ | |
1797 | static int happy_meal_is_not_so_happy(struct happy_meal *hp, u32 status) | |
1798 | { | |
1799 | int reset = 0; | |
1800 | ||
1801 | /* Only print messages for non-counter related interrupts. */ | |
1802 | if (status & (GREG_STAT_STSTERR | GREG_STAT_TFIFO_UND | | |
1803 | GREG_STAT_MAXPKTERR | GREG_STAT_RXERR | | |
1804 | GREG_STAT_RXPERR | GREG_STAT_RXTERR | GREG_STAT_EOPERR | | |
1805 | GREG_STAT_MIFIRQ | GREG_STAT_TXEACK | GREG_STAT_TXLERR | | |
1806 | GREG_STAT_TXPERR | GREG_STAT_TXTERR | GREG_STAT_SLVERR | | |
1807 | GREG_STAT_SLVPERR)) | |
1808 | printk(KERN_ERR "%s: Error interrupt for happy meal, status = %08x\n", | |
1809 | hp->dev->name, status); | |
1810 | ||
1811 | if (status & GREG_STAT_RFIFOVF) { | |
1812 | /* Receive FIFO overflow is harmless and the hardware will take | |
1813 | care of it, just some packets are lost. Who cares. */ | |
1814 | printk(KERN_DEBUG "%s: Happy Meal receive FIFO overflow.\n", hp->dev->name); | |
1815 | } | |
1816 | ||
1817 | if (status & GREG_STAT_STSTERR) { | |
1818 | /* BigMAC SQE link test failed. */ | |
1819 | printk(KERN_ERR "%s: Happy Meal BigMAC SQE test failed.\n", hp->dev->name); | |
1820 | reset = 1; | |
1821 | } | |
1822 | ||
1823 | if (status & GREG_STAT_TFIFO_UND) { | |
1824 | /* Transmit FIFO underrun, again DMA error likely. */ | |
1825 | printk(KERN_ERR "%s: Happy Meal transmitter FIFO underrun, DMA error.\n", | |
1826 | hp->dev->name); | |
1827 | reset = 1; | |
1828 | } | |
1829 | ||
1830 | if (status & GREG_STAT_MAXPKTERR) { | |
1831 | /* Driver error, tried to transmit something larger | |
1832 | * than ethernet max mtu. | |
1833 | */ | |
1834 | printk(KERN_ERR "%s: Happy Meal MAX Packet size error.\n", hp->dev->name); | |
1835 | reset = 1; | |
1836 | } | |
1837 | ||
1838 | if (status & GREG_STAT_NORXD) { | |
1839 | /* This is harmless, it just means the system is | |
1840 | * quite loaded and the incoming packet rate was | |
1841 | * faster than the interrupt handler could keep up | |
1842 | * with. | |
1843 | */ | |
1844 | printk(KERN_INFO "%s: Happy Meal out of receive " | |
1845 | "descriptors, packet dropped.\n", | |
1846 | hp->dev->name); | |
1847 | } | |
1848 | ||
1849 | if (status & (GREG_STAT_RXERR|GREG_STAT_RXPERR|GREG_STAT_RXTERR)) { | |
1850 | /* All sorts of DMA receive errors. */ | |
1851 | printk(KERN_ERR "%s: Happy Meal rx DMA errors [ ", hp->dev->name); | |
1852 | if (status & GREG_STAT_RXERR) | |
1853 | printk("GenericError "); | |
1854 | if (status & GREG_STAT_RXPERR) | |
1855 | printk("ParityError "); | |
1856 | if (status & GREG_STAT_RXTERR) | |
1857 | printk("RxTagBotch "); | |
1858 | printk("]\n"); | |
1859 | reset = 1; | |
1860 | } | |
1861 | ||
1862 | if (status & GREG_STAT_EOPERR) { | |
1863 | /* Driver bug, didn't set EOP bit in tx descriptor given | |
1864 | * to the happy meal. | |
1865 | */ | |
1866 | printk(KERN_ERR "%s: EOP not set in happy meal transmit descriptor!\n", | |
1867 | hp->dev->name); | |
1868 | reset = 1; | |
1869 | } | |
1870 | ||
1871 | if (status & GREG_STAT_MIFIRQ) { | |
1872 | /* MIF signalled an interrupt, were we polling it? */ | |
1873 | printk(KERN_ERR "%s: Happy Meal MIF interrupt.\n", hp->dev->name); | |
1874 | } | |
1875 | ||
1876 | if (status & | |
1877 | (GREG_STAT_TXEACK|GREG_STAT_TXLERR|GREG_STAT_TXPERR|GREG_STAT_TXTERR)) { | |
1878 | /* All sorts of transmit DMA errors. */ | |
1879 | printk(KERN_ERR "%s: Happy Meal tx DMA errors [ ", hp->dev->name); | |
1880 | if (status & GREG_STAT_TXEACK) | |
1881 | printk("GenericError "); | |
1882 | if (status & GREG_STAT_TXLERR) | |
1883 | printk("LateError "); | |
1884 | if (status & GREG_STAT_TXPERR) | |
1885 | printk("ParityErro "); | |
1886 | if (status & GREG_STAT_TXTERR) | |
1887 | printk("TagBotch "); | |
1888 | printk("]\n"); | |
1889 | reset = 1; | |
1890 | } | |
1891 | ||
1892 | if (status & (GREG_STAT_SLVERR|GREG_STAT_SLVPERR)) { | |
1893 | /* Bus or parity error when cpu accessed happy meal registers | |
1894 | * or it's internal FIFO's. Should never see this. | |
1895 | */ | |
1896 | printk(KERN_ERR "%s: Happy Meal register access SBUS slave (%s) error.\n", | |
1897 | hp->dev->name, | |
1898 | (status & GREG_STAT_SLVPERR) ? "parity" : "generic"); | |
1899 | reset = 1; | |
1900 | } | |
1901 | ||
1902 | if (reset) { | |
1903 | printk(KERN_NOTICE "%s: Resetting...\n", hp->dev->name); | |
1904 | happy_meal_init(hp); | |
1905 | return 1; | |
1906 | } | |
1907 | return 0; | |
1908 | } | |
1909 | ||
1910 | /* hp->happy_lock must be held */ | |
1911 | static void happy_meal_mif_interrupt(struct happy_meal *hp) | |
1912 | { | |
1913 | void __iomem *tregs = hp->tcvregs; | |
1914 | ||
1915 | printk(KERN_INFO "%s: Link status change.\n", hp->dev->name); | |
1916 | hp->sw_bmcr = happy_meal_tcvr_read(hp, tregs, MII_BMCR); | |
1917 | hp->sw_lpa = happy_meal_tcvr_read(hp, tregs, MII_LPA); | |
1918 | ||
1919 | /* Use the fastest transmission protocol possible. */ | |
1920 | if (hp->sw_lpa & LPA_100FULL) { | |
1921 | printk(KERN_INFO "%s: Switching to 100Mbps at full duplex.", hp->dev->name); | |
1922 | hp->sw_bmcr |= (BMCR_FULLDPLX | BMCR_SPEED100); | |
1923 | } else if (hp->sw_lpa & LPA_100HALF) { | |
1924 | printk(KERN_INFO "%s: Switching to 100MBps at half duplex.", hp->dev->name); | |
1925 | hp->sw_bmcr |= BMCR_SPEED100; | |
1926 | } else if (hp->sw_lpa & LPA_10FULL) { | |
1927 | printk(KERN_INFO "%s: Switching to 10MBps at full duplex.", hp->dev->name); | |
1928 | hp->sw_bmcr |= BMCR_FULLDPLX; | |
1929 | } else { | |
1930 | printk(KERN_INFO "%s: Using 10Mbps at half duplex.", hp->dev->name); | |
1931 | } | |
1932 | happy_meal_tcvr_write(hp, tregs, MII_BMCR, hp->sw_bmcr); | |
1933 | ||
1934 | /* Finally stop polling and shut up the MIF. */ | |
1935 | happy_meal_poll_stop(hp, tregs); | |
1936 | } | |
1937 | ||
1938 | #ifdef TXDEBUG | |
1939 | #define TXD(x) printk x | |
1940 | #else | |
1941 | #define TXD(x) | |
1942 | #endif | |
1943 | ||
1944 | /* hp->happy_lock must be held */ | |
1945 | static void happy_meal_tx(struct happy_meal *hp) | |
1946 | { | |
1947 | struct happy_meal_txd *txbase = &hp->happy_block->happy_meal_txd[0]; | |
1948 | struct happy_meal_txd *this; | |
1949 | struct net_device *dev = hp->dev; | |
1950 | int elem; | |
1951 | ||
1952 | elem = hp->tx_old; | |
1953 | TXD(("TX<")); | |
1954 | while (elem != hp->tx_new) { | |
1955 | struct sk_buff *skb; | |
1956 | u32 flags, dma_addr, dma_len; | |
1957 | int frag; | |
1958 | ||
1959 | TXD(("[%d]", elem)); | |
1960 | this = &txbase[elem]; | |
1961 | flags = hme_read_desc32(hp, &this->tx_flags); | |
1962 | if (flags & TXFLAG_OWN) | |
1963 | break; | |
1964 | skb = hp->tx_skbs[elem]; | |
1965 | if (skb_shinfo(skb)->nr_frags) { | |
1966 | int last; | |
1967 | ||
1968 | last = elem + skb_shinfo(skb)->nr_frags; | |
1969 | last &= (TX_RING_SIZE - 1); | |
1970 | flags = hme_read_desc32(hp, &txbase[last].tx_flags); | |
1971 | if (flags & TXFLAG_OWN) | |
1972 | break; | |
1973 | } | |
1974 | hp->tx_skbs[elem] = NULL; | |
1975 | hp->net_stats.tx_bytes += skb->len; | |
1976 | ||
1977 | for (frag = 0; frag <= skb_shinfo(skb)->nr_frags; frag++) { | |
1978 | dma_addr = hme_read_desc32(hp, &this->tx_addr); | |
1979 | dma_len = hme_read_desc32(hp, &this->tx_flags); | |
1980 | ||
1981 | dma_len &= TXFLAG_SIZE; | |
1982 | hme_dma_unmap(hp, dma_addr, dma_len, DMA_TODEVICE); | |
1983 | ||
1984 | elem = NEXT_TX(elem); | |
1985 | this = &txbase[elem]; | |
1986 | } | |
1987 | ||
1988 | dev_kfree_skb_irq(skb); | |
1989 | hp->net_stats.tx_packets++; | |
1990 | } | |
1991 | hp->tx_old = elem; | |
1992 | TXD((">")); | |
1993 | ||
1994 | if (netif_queue_stopped(dev) && | |
1995 | TX_BUFFS_AVAIL(hp) > (MAX_SKB_FRAGS + 1)) | |
1996 | netif_wake_queue(dev); | |
1997 | } | |
1998 | ||
1999 | #ifdef RXDEBUG | |
2000 | #define RXD(x) printk x | |
2001 | #else | |
2002 | #define RXD(x) | |
2003 | #endif | |
2004 | ||
2005 | /* Originally I used to handle the allocation failure by just giving back just | |
2006 | * that one ring buffer to the happy meal. Problem is that usually when that | |
2007 | * condition is triggered, the happy meal expects you to do something reasonable | |
2008 | * with all of the packets it has DMA'd in. So now I just drop the entire | |
2009 | * ring when we cannot get a new skb and give them all back to the happy meal, | |
2010 | * maybe things will be "happier" now. | |
2011 | * | |
2012 | * hp->happy_lock must be held | |
2013 | */ | |
2014 | static void happy_meal_rx(struct happy_meal *hp, struct net_device *dev) | |
2015 | { | |
2016 | struct happy_meal_rxd *rxbase = &hp->happy_block->happy_meal_rxd[0]; | |
2017 | struct happy_meal_rxd *this; | |
2018 | int elem = hp->rx_new, drops = 0; | |
2019 | u32 flags; | |
2020 | ||
2021 | RXD(("RX<")); | |
2022 | this = &rxbase[elem]; | |
2023 | while (!((flags = hme_read_desc32(hp, &this->rx_flags)) & RXFLAG_OWN)) { | |
2024 | struct sk_buff *skb; | |
2025 | int len = flags >> 16; | |
2026 | u16 csum = flags & RXFLAG_CSUM; | |
2027 | u32 dma_addr = hme_read_desc32(hp, &this->rx_addr); | |
2028 | ||
2029 | RXD(("[%d ", elem)); | |
2030 | ||
2031 | /* Check for errors. */ | |
2032 | if ((len < ETH_ZLEN) || (flags & RXFLAG_OVERFLOW)) { | |
2033 | RXD(("ERR(%08x)]", flags)); | |
2034 | hp->net_stats.rx_errors++; | |
2035 | if (len < ETH_ZLEN) | |
2036 | hp->net_stats.rx_length_errors++; | |
2037 | if (len & (RXFLAG_OVERFLOW >> 16)) { | |
2038 | hp->net_stats.rx_over_errors++; | |
2039 | hp->net_stats.rx_fifo_errors++; | |
2040 | } | |
2041 | ||
2042 | /* Return it to the Happy meal. */ | |
2043 | drop_it: | |
2044 | hp->net_stats.rx_dropped++; | |
2045 | hme_write_rxd(hp, this, | |
2046 | (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)), | |
2047 | dma_addr); | |
2048 | goto next; | |
2049 | } | |
2050 | skb = hp->rx_skbs[elem]; | |
2051 | if (len > RX_COPY_THRESHOLD) { | |
2052 | struct sk_buff *new_skb; | |
2053 | ||
2054 | /* Now refill the entry, if we can. */ | |
2055 | new_skb = happy_meal_alloc_skb(RX_BUF_ALLOC_SIZE, GFP_ATOMIC); | |
2056 | if (new_skb == NULL) { | |
2057 | drops++; | |
2058 | goto drop_it; | |
2059 | } | |
2060 | hme_dma_unmap(hp, dma_addr, RX_BUF_ALLOC_SIZE, DMA_FROMDEVICE); | |
2061 | hp->rx_skbs[elem] = new_skb; | |
2062 | new_skb->dev = dev; | |
2063 | skb_put(new_skb, (ETH_FRAME_LEN + RX_OFFSET)); | |
2064 | hme_write_rxd(hp, this, | |
2065 | (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)), | |
2066 | hme_dma_map(hp, new_skb->data, RX_BUF_ALLOC_SIZE, DMA_FROMDEVICE)); | |
2067 | skb_reserve(new_skb, RX_OFFSET); | |
2068 | ||
2069 | /* Trim the original skb for the netif. */ | |
2070 | skb_trim(skb, len); | |
2071 | } else { | |
2072 | struct sk_buff *copy_skb = dev_alloc_skb(len + 2); | |
2073 | ||
2074 | if (copy_skb == NULL) { | |
2075 | drops++; | |
2076 | goto drop_it; | |
2077 | } | |
2078 | ||
2079 | copy_skb->dev = dev; | |
2080 | skb_reserve(copy_skb, 2); | |
2081 | skb_put(copy_skb, len); | |
2082 | hme_dma_sync_for_cpu(hp, dma_addr, len, DMA_FROMDEVICE); | |
2083 | memcpy(copy_skb->data, skb->data, len); | |
2084 | hme_dma_sync_for_device(hp, dma_addr, len, DMA_FROMDEVICE); | |
2085 | ||
2086 | /* Reuse original ring buffer. */ | |
2087 | hme_write_rxd(hp, this, | |
2088 | (RXFLAG_OWN|((RX_BUF_ALLOC_SIZE-RX_OFFSET)<<16)), | |
2089 | dma_addr); | |
2090 | ||
2091 | skb = copy_skb; | |
2092 | } | |
2093 | ||
2094 | /* This card is _fucking_ hot... */ | |
2095 | skb->csum = ntohs(csum ^ 0xffff); | |
2096 | skb->ip_summed = CHECKSUM_HW; | |
2097 | ||
2098 | RXD(("len=%d csum=%4x]", len, csum)); | |
2099 | skb->protocol = eth_type_trans(skb, dev); | |
2100 | netif_rx(skb); | |
2101 | ||
2102 | dev->last_rx = jiffies; | |
2103 | hp->net_stats.rx_packets++; | |
2104 | hp->net_stats.rx_bytes += len; | |
2105 | next: | |
2106 | elem = NEXT_RX(elem); | |
2107 | this = &rxbase[elem]; | |
2108 | } | |
2109 | hp->rx_new = elem; | |
2110 | if (drops) | |
2111 | printk(KERN_INFO "%s: Memory squeeze, deferring packet.\n", hp->dev->name); | |
2112 | RXD((">")); | |
2113 | } | |
2114 | ||
2115 | static irqreturn_t happy_meal_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
2116 | { | |
2117 | struct net_device *dev = (struct net_device *) dev_id; | |
2118 | struct happy_meal *hp = dev->priv; | |
2119 | u32 happy_status = hme_read32(hp, hp->gregs + GREG_STAT); | |
2120 | ||
2121 | HMD(("happy_meal_interrupt: status=%08x ", happy_status)); | |
2122 | ||
2123 | spin_lock(&hp->happy_lock); | |
2124 | ||
2125 | if (happy_status & GREG_STAT_ERRORS) { | |
2126 | HMD(("ERRORS ")); | |
2127 | if (happy_meal_is_not_so_happy(hp, /* un- */ happy_status)) | |
2128 | goto out; | |
2129 | } | |
2130 | ||
2131 | if (happy_status & GREG_STAT_MIFIRQ) { | |
2132 | HMD(("MIFIRQ ")); | |
2133 | happy_meal_mif_interrupt(hp); | |
2134 | } | |
2135 | ||
2136 | if (happy_status & GREG_STAT_TXALL) { | |
2137 | HMD(("TXALL ")); | |
2138 | happy_meal_tx(hp); | |
2139 | } | |
2140 | ||
2141 | if (happy_status & GREG_STAT_RXTOHOST) { | |
2142 | HMD(("RXTOHOST ")); | |
2143 | happy_meal_rx(hp, dev); | |
2144 | } | |
2145 | ||
2146 | HMD(("done\n")); | |
2147 | out: | |
2148 | spin_unlock(&hp->happy_lock); | |
2149 | ||
2150 | return IRQ_HANDLED; | |
2151 | } | |
2152 | ||
2153 | #ifdef CONFIG_SBUS | |
2154 | static irqreturn_t quattro_sbus_interrupt(int irq, void *cookie, struct pt_regs *ptregs) | |
2155 | { | |
2156 | struct quattro *qp = (struct quattro *) cookie; | |
2157 | int i; | |
2158 | ||
2159 | for (i = 0; i < 4; i++) { | |
2160 | struct net_device *dev = qp->happy_meals[i]; | |
2161 | struct happy_meal *hp = dev->priv; | |
2162 | u32 happy_status = hme_read32(hp, hp->gregs + GREG_STAT); | |
2163 | ||
2164 | HMD(("quattro_interrupt: status=%08x ", happy_status)); | |
2165 | ||
2166 | if (!(happy_status & (GREG_STAT_ERRORS | | |
2167 | GREG_STAT_MIFIRQ | | |
2168 | GREG_STAT_TXALL | | |
2169 | GREG_STAT_RXTOHOST))) | |
2170 | continue; | |
2171 | ||
2172 | spin_lock(&hp->happy_lock); | |
2173 | ||
2174 | if (happy_status & GREG_STAT_ERRORS) { | |
2175 | HMD(("ERRORS ")); | |
2176 | if (happy_meal_is_not_so_happy(hp, happy_status)) | |
2177 | goto next; | |
2178 | } | |
2179 | ||
2180 | if (happy_status & GREG_STAT_MIFIRQ) { | |
2181 | HMD(("MIFIRQ ")); | |
2182 | happy_meal_mif_interrupt(hp); | |
2183 | } | |
2184 | ||
2185 | if (happy_status & GREG_STAT_TXALL) { | |
2186 | HMD(("TXALL ")); | |
2187 | happy_meal_tx(hp); | |
2188 | } | |
2189 | ||
2190 | if (happy_status & GREG_STAT_RXTOHOST) { | |
2191 | HMD(("RXTOHOST ")); | |
2192 | happy_meal_rx(hp, dev); | |
2193 | } | |
2194 | ||
2195 | next: | |
2196 | spin_unlock(&hp->happy_lock); | |
2197 | } | |
2198 | HMD(("done\n")); | |
2199 | ||
2200 | return IRQ_HANDLED; | |
2201 | } | |
2202 | #endif | |
2203 | ||
2204 | static int happy_meal_open(struct net_device *dev) | |
2205 | { | |
2206 | struct happy_meal *hp = dev->priv; | |
2207 | int res; | |
2208 | ||
2209 | HMD(("happy_meal_open: ")); | |
2210 | ||
2211 | /* On SBUS Quattro QFE cards, all hme interrupts are concentrated | |
2212 | * into a single source which we register handling at probe time. | |
2213 | */ | |
2214 | if ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO) { | |
2215 | if (request_irq(dev->irq, &happy_meal_interrupt, | |
2216 | SA_SHIRQ, dev->name, (void *)dev)) { | |
2217 | HMD(("EAGAIN\n")); | |
2218 | #ifdef __sparc__ | |
2219 | printk(KERN_ERR "happy_meal(SBUS): Can't order irq %s to go.\n", | |
2220 | __irq_itoa(dev->irq)); | |
2221 | #else | |
2222 | printk(KERN_ERR "happy_meal(SBUS): Can't order irq %d to go.\n", | |
2223 | dev->irq); | |
2224 | #endif | |
2225 | ||
2226 | return -EAGAIN; | |
2227 | } | |
2228 | } | |
2229 | ||
2230 | HMD(("to happy_meal_init\n")); | |
2231 | ||
2232 | spin_lock_irq(&hp->happy_lock); | |
2233 | res = happy_meal_init(hp); | |
2234 | spin_unlock_irq(&hp->happy_lock); | |
2235 | ||
2236 | if (res && ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO)) | |
2237 | free_irq(dev->irq, dev); | |
2238 | return res; | |
2239 | } | |
2240 | ||
2241 | static int happy_meal_close(struct net_device *dev) | |
2242 | { | |
2243 | struct happy_meal *hp = dev->priv; | |
2244 | ||
2245 | spin_lock_irq(&hp->happy_lock); | |
2246 | happy_meal_stop(hp, hp->gregs); | |
2247 | happy_meal_clean_rings(hp); | |
2248 | ||
2249 | /* If auto-negotiation timer is running, kill it. */ | |
2250 | del_timer(&hp->happy_timer); | |
2251 | ||
2252 | spin_unlock_irq(&hp->happy_lock); | |
2253 | ||
2254 | /* On Quattro QFE cards, all hme interrupts are concentrated | |
2255 | * into a single source which we register handling at probe | |
2256 | * time and never unregister. | |
2257 | */ | |
2258 | if ((hp->happy_flags & (HFLAG_QUATTRO|HFLAG_PCI)) != HFLAG_QUATTRO) | |
2259 | free_irq(dev->irq, dev); | |
2260 | ||
2261 | return 0; | |
2262 | } | |
2263 | ||
2264 | #ifdef SXDEBUG | |
2265 | #define SXD(x) printk x | |
2266 | #else | |
2267 | #define SXD(x) | |
2268 | #endif | |
2269 | ||
2270 | static void happy_meal_tx_timeout(struct net_device *dev) | |
2271 | { | |
2272 | struct happy_meal *hp = dev->priv; | |
2273 | ||
2274 | printk (KERN_ERR "%s: transmit timed out, resetting\n", dev->name); | |
2275 | tx_dump_log(); | |
2276 | printk (KERN_ERR "%s: Happy Status %08x TX[%08x:%08x]\n", dev->name, | |
2277 | hme_read32(hp, hp->gregs + GREG_STAT), | |
2278 | hme_read32(hp, hp->etxregs + ETX_CFG), | |
2279 | hme_read32(hp, hp->bigmacregs + BMAC_TXCFG)); | |
2280 | ||
2281 | spin_lock_irq(&hp->happy_lock); | |
2282 | happy_meal_init(hp); | |
2283 | spin_unlock_irq(&hp->happy_lock); | |
2284 | ||
2285 | netif_wake_queue(dev); | |
2286 | } | |
2287 | ||
2288 | static int happy_meal_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
2289 | { | |
2290 | struct happy_meal *hp = dev->priv; | |
2291 | int entry; | |
2292 | u32 tx_flags; | |
2293 | ||
2294 | tx_flags = TXFLAG_OWN; | |
2295 | if (skb->ip_summed == CHECKSUM_HW) { | |
2296 | u32 csum_start_off, csum_stuff_off; | |
2297 | ||
2298 | csum_start_off = (u32) (skb->h.raw - skb->data); | |
2299 | csum_stuff_off = (u32) ((skb->h.raw + skb->csum) - skb->data); | |
2300 | ||
2301 | tx_flags = (TXFLAG_OWN | TXFLAG_CSENABLE | | |
2302 | ((csum_start_off << 14) & TXFLAG_CSBUFBEGIN) | | |
2303 | ((csum_stuff_off << 20) & TXFLAG_CSLOCATION)); | |
2304 | } | |
2305 | ||
2306 | spin_lock_irq(&hp->happy_lock); | |
2307 | ||
2308 | if (TX_BUFFS_AVAIL(hp) <= (skb_shinfo(skb)->nr_frags + 1)) { | |
2309 | netif_stop_queue(dev); | |
2310 | spin_unlock_irq(&hp->happy_lock); | |
2311 | printk(KERN_ERR "%s: BUG! Tx Ring full when queue awake!\n", | |
2312 | dev->name); | |
2313 | return 1; | |
2314 | } | |
2315 | ||
2316 | entry = hp->tx_new; | |
2317 | SXD(("SX<l[%d]e[%d]>", len, entry)); | |
2318 | hp->tx_skbs[entry] = skb; | |
2319 | ||
2320 | if (skb_shinfo(skb)->nr_frags == 0) { | |
2321 | u32 mapping, len; | |
2322 | ||
2323 | len = skb->len; | |
2324 | mapping = hme_dma_map(hp, skb->data, len, DMA_TODEVICE); | |
2325 | tx_flags |= (TXFLAG_SOP | TXFLAG_EOP); | |
2326 | hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry], | |
2327 | (tx_flags | (len & TXFLAG_SIZE)), | |
2328 | mapping); | |
2329 | entry = NEXT_TX(entry); | |
2330 | } else { | |
2331 | u32 first_len, first_mapping; | |
2332 | int frag, first_entry = entry; | |
2333 | ||
2334 | /* We must give this initial chunk to the device last. | |
2335 | * Otherwise we could race with the device. | |
2336 | */ | |
2337 | first_len = skb_headlen(skb); | |
2338 | first_mapping = hme_dma_map(hp, skb->data, first_len, DMA_TODEVICE); | |
2339 | entry = NEXT_TX(entry); | |
2340 | ||
2341 | for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { | |
2342 | skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag]; | |
2343 | u32 len, mapping, this_txflags; | |
2344 | ||
2345 | len = this_frag->size; | |
2346 | mapping = hme_dma_map(hp, | |
2347 | ((void *) page_address(this_frag->page) + | |
2348 | this_frag->page_offset), | |
2349 | len, DMA_TODEVICE); | |
2350 | this_txflags = tx_flags; | |
2351 | if (frag == skb_shinfo(skb)->nr_frags - 1) | |
2352 | this_txflags |= TXFLAG_EOP; | |
2353 | hme_write_txd(hp, &hp->happy_block->happy_meal_txd[entry], | |
2354 | (this_txflags | (len & TXFLAG_SIZE)), | |
2355 | mapping); | |
2356 | entry = NEXT_TX(entry); | |
2357 | } | |
2358 | hme_write_txd(hp, &hp->happy_block->happy_meal_txd[first_entry], | |
2359 | (tx_flags | TXFLAG_SOP | (first_len & TXFLAG_SIZE)), | |
2360 | first_mapping); | |
2361 | } | |
2362 | ||
2363 | hp->tx_new = entry; | |
2364 | ||
2365 | if (TX_BUFFS_AVAIL(hp) <= (MAX_SKB_FRAGS + 1)) | |
2366 | netif_stop_queue(dev); | |
2367 | ||
2368 | /* Get it going. */ | |
2369 | hme_write32(hp, hp->etxregs + ETX_PENDING, ETX_TP_DMAWAKEUP); | |
2370 | ||
2371 | spin_unlock_irq(&hp->happy_lock); | |
2372 | ||
2373 | dev->trans_start = jiffies; | |
2374 | ||
2375 | tx_add_log(hp, TXLOG_ACTION_TXMIT, 0); | |
2376 | return 0; | |
2377 | } | |
2378 | ||
2379 | static struct net_device_stats *happy_meal_get_stats(struct net_device *dev) | |
2380 | { | |
2381 | struct happy_meal *hp = dev->priv; | |
2382 | ||
2383 | spin_lock_irq(&hp->happy_lock); | |
2384 | happy_meal_get_counters(hp, hp->bigmacregs); | |
2385 | spin_unlock_irq(&hp->happy_lock); | |
2386 | ||
2387 | return &hp->net_stats; | |
2388 | } | |
2389 | ||
2390 | static void happy_meal_set_multicast(struct net_device *dev) | |
2391 | { | |
2392 | struct happy_meal *hp = dev->priv; | |
2393 | void __iomem *bregs = hp->bigmacregs; | |
2394 | struct dev_mc_list *dmi = dev->mc_list; | |
2395 | char *addrs; | |
2396 | int i; | |
2397 | u32 crc; | |
2398 | ||
2399 | spin_lock_irq(&hp->happy_lock); | |
2400 | ||
2401 | netif_stop_queue(dev); | |
2402 | ||
2403 | if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 64)) { | |
2404 | hme_write32(hp, bregs + BMAC_HTABLE0, 0xffff); | |
2405 | hme_write32(hp, bregs + BMAC_HTABLE1, 0xffff); | |
2406 | hme_write32(hp, bregs + BMAC_HTABLE2, 0xffff); | |
2407 | hme_write32(hp, bregs + BMAC_HTABLE3, 0xffff); | |
2408 | } else if (dev->flags & IFF_PROMISC) { | |
2409 | hme_write32(hp, bregs + BMAC_RXCFG, | |
2410 | hme_read32(hp, bregs + BMAC_RXCFG) | BIGMAC_RXCFG_PMISC); | |
2411 | } else { | |
2412 | u16 hash_table[4]; | |
2413 | ||
2414 | for (i = 0; i < 4; i++) | |
2415 | hash_table[i] = 0; | |
2416 | ||
2417 | for (i = 0; i < dev->mc_count; i++) { | |
2418 | addrs = dmi->dmi_addr; | |
2419 | dmi = dmi->next; | |
2420 | ||
2421 | if (!(*addrs & 1)) | |
2422 | continue; | |
2423 | ||
2424 | crc = ether_crc_le(6, addrs); | |
2425 | crc >>= 26; | |
2426 | hash_table[crc >> 4] |= 1 << (crc & 0xf); | |
2427 | } | |
2428 | hme_write32(hp, bregs + BMAC_HTABLE0, hash_table[0]); | |
2429 | hme_write32(hp, bregs + BMAC_HTABLE1, hash_table[1]); | |
2430 | hme_write32(hp, bregs + BMAC_HTABLE2, hash_table[2]); | |
2431 | hme_write32(hp, bregs + BMAC_HTABLE3, hash_table[3]); | |
2432 | } | |
2433 | ||
2434 | netif_wake_queue(dev); | |
2435 | ||
2436 | spin_unlock_irq(&hp->happy_lock); | |
2437 | } | |
2438 | ||
2439 | /* Ethtool support... */ | |
2440 | static int hme_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
2441 | { | |
2442 | struct happy_meal *hp = dev->priv; | |
2443 | ||
2444 | cmd->supported = | |
2445 | (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | | |
2446 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | | |
2447 | SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII); | |
2448 | ||
2449 | /* XXX hardcoded stuff for now */ | |
2450 | cmd->port = PORT_TP; /* XXX no MII support */ | |
2451 | cmd->transceiver = XCVR_INTERNAL; /* XXX no external xcvr support */ | |
2452 | cmd->phy_address = 0; /* XXX fixed PHYAD */ | |
2453 | ||
2454 | /* Record PHY settings. */ | |
2455 | spin_lock_irq(&hp->happy_lock); | |
2456 | hp->sw_bmcr = happy_meal_tcvr_read(hp, hp->tcvregs, MII_BMCR); | |
2457 | hp->sw_lpa = happy_meal_tcvr_read(hp, hp->tcvregs, MII_LPA); | |
2458 | spin_unlock_irq(&hp->happy_lock); | |
2459 | ||
2460 | if (hp->sw_bmcr & BMCR_ANENABLE) { | |
2461 | cmd->autoneg = AUTONEG_ENABLE; | |
2462 | cmd->speed = | |
2463 | (hp->sw_lpa & (LPA_100HALF | LPA_100FULL)) ? | |
2464 | SPEED_100 : SPEED_10; | |
2465 | if (cmd->speed == SPEED_100) | |
2466 | cmd->duplex = | |
2467 | (hp->sw_lpa & (LPA_100FULL)) ? | |
2468 | DUPLEX_FULL : DUPLEX_HALF; | |
2469 | else | |
2470 | cmd->duplex = | |
2471 | (hp->sw_lpa & (LPA_10FULL)) ? | |
2472 | DUPLEX_FULL : DUPLEX_HALF; | |
2473 | } else { | |
2474 | cmd->autoneg = AUTONEG_DISABLE; | |
2475 | cmd->speed = | |
2476 | (hp->sw_bmcr & BMCR_SPEED100) ? | |
2477 | SPEED_100 : SPEED_10; | |
2478 | cmd->duplex = | |
2479 | (hp->sw_bmcr & BMCR_FULLDPLX) ? | |
2480 | DUPLEX_FULL : DUPLEX_HALF; | |
2481 | } | |
2482 | return 0; | |
2483 | } | |
2484 | ||
2485 | static int hme_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
2486 | { | |
2487 | struct happy_meal *hp = dev->priv; | |
2488 | ||
2489 | /* Verify the settings we care about. */ | |
2490 | if (cmd->autoneg != AUTONEG_ENABLE && | |
2491 | cmd->autoneg != AUTONEG_DISABLE) | |
2492 | return -EINVAL; | |
2493 | if (cmd->autoneg == AUTONEG_DISABLE && | |
2494 | ((cmd->speed != SPEED_100 && | |
2495 | cmd->speed != SPEED_10) || | |
2496 | (cmd->duplex != DUPLEX_HALF && | |
2497 | cmd->duplex != DUPLEX_FULL))) | |
2498 | return -EINVAL; | |
2499 | ||
2500 | /* Ok, do it to it. */ | |
2501 | spin_lock_irq(&hp->happy_lock); | |
2502 | del_timer(&hp->happy_timer); | |
2503 | happy_meal_begin_auto_negotiation(hp, hp->tcvregs, cmd); | |
2504 | spin_unlock_irq(&hp->happy_lock); | |
2505 | ||
2506 | return 0; | |
2507 | } | |
2508 | ||
2509 | static void hme_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) | |
2510 | { | |
2511 | struct happy_meal *hp = dev->priv; | |
2512 | ||
2513 | strcpy(info->driver, "sunhme"); | |
2514 | strcpy(info->version, "2.02"); | |
2515 | if (hp->happy_flags & HFLAG_PCI) { | |
2516 | struct pci_dev *pdev = hp->happy_dev; | |
2517 | strcpy(info->bus_info, pci_name(pdev)); | |
2518 | } | |
2519 | #ifdef CONFIG_SBUS | |
2520 | else { | |
2521 | struct sbus_dev *sdev = hp->happy_dev; | |
2522 | sprintf(info->bus_info, "SBUS:%d", | |
2523 | sdev->slot); | |
2524 | } | |
2525 | #endif | |
2526 | } | |
2527 | ||
2528 | static u32 hme_get_link(struct net_device *dev) | |
2529 | { | |
2530 | struct happy_meal *hp = dev->priv; | |
2531 | ||
2532 | spin_lock_irq(&hp->happy_lock); | |
2533 | hp->sw_bmcr = happy_meal_tcvr_read(hp, hp->tcvregs, MII_BMCR); | |
2534 | spin_unlock_irq(&hp->happy_lock); | |
2535 | ||
2536 | return (hp->sw_bmsr & BMSR_LSTATUS); | |
2537 | } | |
2538 | ||
2539 | static struct ethtool_ops hme_ethtool_ops = { | |
2540 | .get_settings = hme_get_settings, | |
2541 | .set_settings = hme_set_settings, | |
2542 | .get_drvinfo = hme_get_drvinfo, | |
2543 | .get_link = hme_get_link, | |
2544 | }; | |
2545 | ||
2546 | static int hme_version_printed; | |
2547 | ||
2548 | #ifdef CONFIG_SBUS | |
2549 | void __init quattro_get_ranges(struct quattro *qp) | |
2550 | { | |
2551 | struct sbus_dev *sdev = qp->quattro_dev; | |
2552 | int err; | |
2553 | ||
2554 | err = prom_getproperty(sdev->prom_node, | |
2555 | "ranges", | |
2556 | (char *)&qp->ranges[0], | |
2557 | sizeof(qp->ranges)); | |
2558 | if (err == 0 || err == -1) { | |
2559 | qp->nranges = 0; | |
2560 | return; | |
2561 | } | |
2562 | qp->nranges = (err / sizeof(struct linux_prom_ranges)); | |
2563 | } | |
2564 | ||
2565 | static void __init quattro_apply_ranges(struct quattro *qp, struct happy_meal *hp) | |
2566 | { | |
2567 | struct sbus_dev *sdev = hp->happy_dev; | |
2568 | int rng; | |
2569 | ||
2570 | for (rng = 0; rng < qp->nranges; rng++) { | |
2571 | struct linux_prom_ranges *rngp = &qp->ranges[rng]; | |
2572 | int reg; | |
2573 | ||
2574 | for (reg = 0; reg < 5; reg++) { | |
2575 | if (sdev->reg_addrs[reg].which_io == | |
2576 | rngp->ot_child_space) | |
2577 | break; | |
2578 | } | |
2579 | if (reg == 5) | |
2580 | continue; | |
2581 | ||
2582 | sdev->reg_addrs[reg].which_io = rngp->ot_parent_space; | |
2583 | sdev->reg_addrs[reg].phys_addr += rngp->ot_parent_base; | |
2584 | } | |
2585 | } | |
2586 | ||
2587 | /* Given a happy meal sbus device, find it's quattro parent. | |
2588 | * If none exist, allocate and return a new one. | |
2589 | * | |
2590 | * Return NULL on failure. | |
2591 | */ | |
2592 | static struct quattro * __init quattro_sbus_find(struct sbus_dev *goal_sdev) | |
2593 | { | |
2594 | struct sbus_bus *sbus; | |
2595 | struct sbus_dev *sdev; | |
2596 | struct quattro *qp; | |
2597 | int i; | |
2598 | ||
2599 | if (qfe_sbus_list == NULL) | |
2600 | goto found; | |
2601 | ||
2602 | for (qp = qfe_sbus_list; qp != NULL; qp = qp->next) { | |
2603 | for (i = 0, sdev = qp->quattro_dev; | |
2604 | (sdev != NULL) && (i < 4); | |
2605 | sdev = sdev->next, i++) { | |
2606 | if (sdev == goal_sdev) | |
2607 | return qp; | |
2608 | } | |
2609 | } | |
2610 | for_each_sbus(sbus) { | |
2611 | for_each_sbusdev(sdev, sbus) { | |
2612 | if (sdev == goal_sdev) | |
2613 | goto found; | |
2614 | } | |
2615 | } | |
2616 | ||
2617 | /* Cannot find quattro parent, fail. */ | |
2618 | return NULL; | |
2619 | ||
2620 | found: | |
2621 | qp = kmalloc(sizeof(struct quattro), GFP_KERNEL); | |
2622 | if (qp != NULL) { | |
2623 | int i; | |
2624 | ||
2625 | for (i = 0; i < 4; i++) | |
2626 | qp->happy_meals[i] = NULL; | |
2627 | ||
2628 | qp->quattro_dev = goal_sdev; | |
2629 | qp->next = qfe_sbus_list; | |
2630 | qfe_sbus_list = qp; | |
2631 | quattro_get_ranges(qp); | |
2632 | } | |
2633 | return qp; | |
2634 | } | |
2635 | ||
2636 | /* After all quattro cards have been probed, we call these functions | |
2637 | * to register the IRQ handlers. | |
2638 | */ | |
2639 | static void __init quattro_sbus_register_irqs(void) | |
2640 | { | |
2641 | struct quattro *qp; | |
2642 | ||
2643 | for (qp = qfe_sbus_list; qp != NULL; qp = qp->next) { | |
2644 | struct sbus_dev *sdev = qp->quattro_dev; | |
2645 | int err; | |
2646 | ||
2647 | err = request_irq(sdev->irqs[0], | |
2648 | quattro_sbus_interrupt, | |
2649 | SA_SHIRQ, "Quattro", | |
2650 | qp); | |
2651 | if (err != 0) { | |
2652 | printk(KERN_ERR "Quattro: Fatal IRQ registery error %d.\n", err); | |
2653 | panic("QFE request irq"); | |
2654 | } | |
2655 | } | |
2656 | } | |
2657 | #endif /* CONFIG_SBUS */ | |
2658 | ||
2659 | #ifdef CONFIG_PCI | |
2660 | static struct quattro * __init quattro_pci_find(struct pci_dev *pdev) | |
2661 | { | |
2662 | struct pci_dev *bdev = pdev->bus->self; | |
2663 | struct quattro *qp; | |
2664 | ||
2665 | if (!bdev) return NULL; | |
2666 | for (qp = qfe_pci_list; qp != NULL; qp = qp->next) { | |
2667 | struct pci_dev *qpdev = qp->quattro_dev; | |
2668 | ||
2669 | if (qpdev == bdev) | |
2670 | return qp; | |
2671 | } | |
2672 | qp = kmalloc(sizeof(struct quattro), GFP_KERNEL); | |
2673 | if (qp != NULL) { | |
2674 | int i; | |
2675 | ||
2676 | for (i = 0; i < 4; i++) | |
2677 | qp->happy_meals[i] = NULL; | |
2678 | ||
2679 | qp->quattro_dev = bdev; | |
2680 | qp->next = qfe_pci_list; | |
2681 | qfe_pci_list = qp; | |
2682 | ||
2683 | /* No range tricks necessary on PCI. */ | |
2684 | qp->nranges = 0; | |
2685 | } | |
2686 | return qp; | |
2687 | } | |
2688 | #endif /* CONFIG_PCI */ | |
2689 | ||
2690 | #ifdef CONFIG_SBUS | |
2691 | static int __init happy_meal_sbus_init(struct sbus_dev *sdev, int is_qfe) | |
2692 | { | |
2693 | struct quattro *qp = NULL; | |
2694 | struct happy_meal *hp; | |
2695 | struct net_device *dev; | |
2696 | int i, qfe_slot = -1; | |
2697 | int err = -ENODEV; | |
2698 | ||
2699 | if (is_qfe) { | |
2700 | qp = quattro_sbus_find(sdev); | |
2701 | if (qp == NULL) | |
2702 | goto err_out; | |
2703 | for (qfe_slot = 0; qfe_slot < 4; qfe_slot++) | |
2704 | if (qp->happy_meals[qfe_slot] == NULL) | |
2705 | break; | |
2706 | if (qfe_slot == 4) | |
2707 | goto err_out; | |
2708 | } | |
2709 | ||
2710 | err = -ENOMEM; | |
2711 | dev = alloc_etherdev(sizeof(struct happy_meal)); | |
2712 | if (!dev) | |
2713 | goto err_out; | |
2714 | SET_MODULE_OWNER(dev); | |
2715 | ||
2716 | if (hme_version_printed++ == 0) | |
2717 | printk(KERN_INFO "%s", version); | |
2718 | ||
2719 | /* If user did not specify a MAC address specifically, use | |
2720 | * the Quattro local-mac-address property... | |
2721 | */ | |
2722 | for (i = 0; i < 6; i++) { | |
2723 | if (macaddr[i] != 0) | |
2724 | break; | |
2725 | } | |
2726 | if (i < 6) { /* a mac address was given */ | |
2727 | for (i = 0; i < 6; i++) | |
2728 | dev->dev_addr[i] = macaddr[i]; | |
2729 | macaddr[5]++; | |
2730 | } else if (qfe_slot != -1 && | |
2731 | prom_getproplen(sdev->prom_node, | |
2732 | "local-mac-address") == 6) { | |
2733 | prom_getproperty(sdev->prom_node, "local-mac-address", | |
2734 | dev->dev_addr, 6); | |
2735 | } else { | |
2736 | memcpy(dev->dev_addr, idprom->id_ethaddr, 6); | |
2737 | } | |
2738 | ||
2739 | hp = dev->priv; | |
2740 | ||
2741 | hp->happy_dev = sdev; | |
2742 | ||
2743 | spin_lock_init(&hp->happy_lock); | |
2744 | ||
2745 | err = -ENODEV; | |
2746 | if (sdev->num_registers != 5) { | |
2747 | printk(KERN_ERR "happymeal: Device does not have 5 regs, it has %d.\n", | |
2748 | sdev->num_registers); | |
2749 | printk(KERN_ERR "happymeal: Would you like that for here or to go?\n"); | |
2750 | goto err_out_free_netdev; | |
2751 | } | |
2752 | ||
2753 | if (qp != NULL) { | |
2754 | hp->qfe_parent = qp; | |
2755 | hp->qfe_ent = qfe_slot; | |
2756 | qp->happy_meals[qfe_slot] = dev; | |
2757 | quattro_apply_ranges(qp, hp); | |
2758 | } | |
2759 | ||
2760 | hp->gregs = sbus_ioremap(&sdev->resource[0], 0, | |
2761 | GREG_REG_SIZE, "HME Global Regs"); | |
2762 | if (!hp->gregs) { | |
2763 | printk(KERN_ERR "happymeal: Cannot map Happy Meal global registers.\n"); | |
2764 | goto err_out_free_netdev; | |
2765 | } | |
2766 | ||
2767 | hp->etxregs = sbus_ioremap(&sdev->resource[1], 0, | |
2768 | ETX_REG_SIZE, "HME TX Regs"); | |
2769 | if (!hp->etxregs) { | |
2770 | printk(KERN_ERR "happymeal: Cannot map Happy Meal MAC Transmit registers.\n"); | |
2771 | goto err_out_iounmap; | |
2772 | } | |
2773 | ||
2774 | hp->erxregs = sbus_ioremap(&sdev->resource[2], 0, | |
2775 | ERX_REG_SIZE, "HME RX Regs"); | |
2776 | if (!hp->erxregs) { | |
2777 | printk(KERN_ERR "happymeal: Cannot map Happy Meal MAC Receive registers.\n"); | |
2778 | goto err_out_iounmap; | |
2779 | } | |
2780 | ||
2781 | hp->bigmacregs = sbus_ioremap(&sdev->resource[3], 0, | |
2782 | BMAC_REG_SIZE, "HME BIGMAC Regs"); | |
2783 | if (!hp->bigmacregs) { | |
2784 | printk(KERN_ERR "happymeal: Cannot map Happy Meal BIGMAC registers.\n"); | |
2785 | goto err_out_iounmap; | |
2786 | } | |
2787 | ||
2788 | hp->tcvregs = sbus_ioremap(&sdev->resource[4], 0, | |
2789 | TCVR_REG_SIZE, "HME Tranceiver Regs"); | |
2790 | if (!hp->tcvregs) { | |
2791 | printk(KERN_ERR "happymeal: Cannot map Happy Meal Tranceiver registers.\n"); | |
2792 | goto err_out_iounmap; | |
2793 | } | |
2794 | ||
2795 | hp->hm_revision = prom_getintdefault(sdev->prom_node, "hm-rev", 0xff); | |
2796 | if (hp->hm_revision == 0xff) | |
2797 | hp->hm_revision = 0xa0; | |
2798 | ||
2799 | /* Now enable the feature flags we can. */ | |
2800 | if (hp->hm_revision == 0x20 || hp->hm_revision == 0x21) | |
2801 | hp->happy_flags = HFLAG_20_21; | |
2802 | else if (hp->hm_revision != 0xa0) | |
2803 | hp->happy_flags = HFLAG_NOT_A0; | |
2804 | ||
2805 | if (qp != NULL) | |
2806 | hp->happy_flags |= HFLAG_QUATTRO; | |
2807 | ||
2808 | /* Get the supported DVMA burst sizes from our Happy SBUS. */ | |
2809 | hp->happy_bursts = prom_getintdefault(sdev->bus->prom_node, | |
2810 | "burst-sizes", 0x00); | |
2811 | ||
2812 | hp->happy_block = sbus_alloc_consistent(hp->happy_dev, | |
2813 | PAGE_SIZE, | |
2814 | &hp->hblock_dvma); | |
2815 | err = -ENOMEM; | |
2816 | if (!hp->happy_block) { | |
2817 | printk(KERN_ERR "happymeal: Cannot allocate descriptors.\n"); | |
2818 | goto err_out_iounmap; | |
2819 | } | |
2820 | ||
2821 | /* Force check of the link first time we are brought up. */ | |
2822 | hp->linkcheck = 0; | |
2823 | ||
2824 | /* Force timer state to 'asleep' with count of zero. */ | |
2825 | hp->timer_state = asleep; | |
2826 | hp->timer_ticks = 0; | |
2827 | ||
2828 | init_timer(&hp->happy_timer); | |
2829 | ||
2830 | hp->dev = dev; | |
2831 | dev->open = &happy_meal_open; | |
2832 | dev->stop = &happy_meal_close; | |
2833 | dev->hard_start_xmit = &happy_meal_start_xmit; | |
2834 | dev->get_stats = &happy_meal_get_stats; | |
2835 | dev->set_multicast_list = &happy_meal_set_multicast; | |
2836 | dev->tx_timeout = &happy_meal_tx_timeout; | |
2837 | dev->watchdog_timeo = 5*HZ; | |
2838 | dev->ethtool_ops = &hme_ethtool_ops; | |
2839 | ||
2840 | /* Happy Meal can do it all... except VLAN. */ | |
2841 | dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_VLAN_CHALLENGED; | |
2842 | ||
2843 | dev->irq = sdev->irqs[0]; | |
2844 | ||
2845 | #if defined(CONFIG_SBUS) && defined(CONFIG_PCI) | |
2846 | /* Hook up PCI register/dma accessors. */ | |
2847 | hp->read_desc32 = sbus_hme_read_desc32; | |
2848 | hp->write_txd = sbus_hme_write_txd; | |
2849 | hp->write_rxd = sbus_hme_write_rxd; | |
2850 | hp->dma_map = (u32 (*)(void *, void *, long, int))sbus_map_single; | |
2851 | hp->dma_unmap = (void (*)(void *, u32, long, int))sbus_unmap_single; | |
2852 | hp->dma_sync_for_cpu = (void (*)(void *, u32, long, int)) | |
2853 | sbus_dma_sync_single_for_cpu; | |
2854 | hp->dma_sync_for_device = (void (*)(void *, u32, long, int)) | |
2855 | sbus_dma_sync_single_for_device; | |
2856 | hp->read32 = sbus_hme_read32; | |
2857 | hp->write32 = sbus_hme_write32; | |
2858 | #endif | |
2859 | ||
2860 | /* Grrr, Happy Meal comes up by default not advertising | |
2861 | * full duplex 100baseT capabilities, fix this. | |
2862 | */ | |
2863 | spin_lock_irq(&hp->happy_lock); | |
2864 | happy_meal_set_initial_advertisement(hp); | |
2865 | spin_unlock_irq(&hp->happy_lock); | |
2866 | ||
2867 | if (register_netdev(hp->dev)) { | |
2868 | printk(KERN_ERR "happymeal: Cannot register net device, " | |
2869 | "aborting.\n"); | |
2870 | goto err_out_free_consistent; | |
2871 | } | |
2872 | ||
2873 | if (qfe_slot != -1) | |
2874 | printk(KERN_INFO "%s: Quattro HME slot %d (SBUS) 10/100baseT Ethernet ", | |
2875 | dev->name, qfe_slot); | |
2876 | else | |
2877 | printk(KERN_INFO "%s: HAPPY MEAL (SBUS) 10/100baseT Ethernet ", | |
2878 | dev->name); | |
2879 | ||
2880 | for (i = 0; i < 6; i++) | |
2881 | printk("%2.2x%c", | |
2882 | dev->dev_addr[i], i == 5 ? ' ' : ':'); | |
2883 | printk("\n"); | |
2884 | ||
2885 | /* We are home free at this point, link us in to the happy | |
2886 | * device list. | |
2887 | */ | |
2888 | hp->next_module = root_happy_dev; | |
2889 | root_happy_dev = hp; | |
2890 | ||
2891 | return 0; | |
2892 | ||
2893 | err_out_free_consistent: | |
2894 | sbus_free_consistent(hp->happy_dev, | |
2895 | PAGE_SIZE, | |
2896 | hp->happy_block, | |
2897 | hp->hblock_dvma); | |
2898 | ||
2899 | err_out_iounmap: | |
2900 | if (hp->gregs) | |
2901 | sbus_iounmap(hp->gregs, GREG_REG_SIZE); | |
2902 | if (hp->etxregs) | |
2903 | sbus_iounmap(hp->etxregs, ETX_REG_SIZE); | |
2904 | if (hp->erxregs) | |
2905 | sbus_iounmap(hp->erxregs, ERX_REG_SIZE); | |
2906 | if (hp->bigmacregs) | |
2907 | sbus_iounmap(hp->bigmacregs, BMAC_REG_SIZE); | |
2908 | if (hp->tcvregs) | |
2909 | sbus_iounmap(hp->tcvregs, TCVR_REG_SIZE); | |
2910 | ||
2911 | err_out_free_netdev: | |
2912 | free_netdev(dev); | |
2913 | ||
2914 | err_out: | |
2915 | return err; | |
2916 | } | |
2917 | #endif | |
2918 | ||
2919 | #ifdef CONFIG_PCI | |
2920 | #ifndef __sparc__ | |
2921 | static int is_quattro_p(struct pci_dev *pdev) | |
2922 | { | |
2923 | struct pci_dev *busdev = pdev->bus->self; | |
2924 | struct list_head *tmp; | |
2925 | int n_hmes; | |
2926 | ||
2927 | if (busdev == NULL || | |
2928 | busdev->vendor != PCI_VENDOR_ID_DEC || | |
2929 | busdev->device != PCI_DEVICE_ID_DEC_21153) | |
2930 | return 0; | |
2931 | ||
2932 | n_hmes = 0; | |
2933 | tmp = pdev->bus->devices.next; | |
2934 | while (tmp != &pdev->bus->devices) { | |
2935 | struct pci_dev *this_pdev = pci_dev_b(tmp); | |
2936 | ||
2937 | if (this_pdev->vendor == PCI_VENDOR_ID_SUN && | |
2938 | this_pdev->device == PCI_DEVICE_ID_SUN_HAPPYMEAL) | |
2939 | n_hmes++; | |
2940 | ||
2941 | tmp = tmp->next; | |
2942 | } | |
2943 | ||
2944 | if (n_hmes != 4) | |
2945 | return 0; | |
2946 | ||
2947 | return 1; | |
2948 | } | |
2949 | ||
2950 | /* Fetch MAC address from vital product data of PCI ROM. */ | |
2951 | static void find_eth_addr_in_vpd(void __iomem *rom_base, int len, int index, unsigned char *dev_addr) | |
2952 | { | |
2953 | int this_offset; | |
2954 | ||
2955 | for (this_offset = 0x20; this_offset < len; this_offset++) { | |
2956 | void __iomem *p = rom_base + this_offset; | |
2957 | ||
2958 | if (readb(p + 0) != 0x90 || | |
2959 | readb(p + 1) != 0x00 || | |
2960 | readb(p + 2) != 0x09 || | |
2961 | readb(p + 3) != 0x4e || | |
2962 | readb(p + 4) != 0x41 || | |
2963 | readb(p + 5) != 0x06) | |
2964 | continue; | |
2965 | ||
2966 | this_offset += 6; | |
2967 | p += 6; | |
2968 | ||
2969 | if (index == 0) { | |
2970 | int i; | |
2971 | ||
2972 | for (i = 0; i < 6; i++) | |
2973 | dev_addr[i] = readb(p + i); | |
2974 | break; | |
2975 | } | |
2976 | index--; | |
2977 | } | |
2978 | } | |
2979 | ||
2980 | static void get_hme_mac_nonsparc(struct pci_dev *pdev, unsigned char *dev_addr) | |
2981 | { | |
2982 | u32 rom_reg_orig; | |
2983 | void __iomem *p; | |
2984 | int index; | |
2985 | ||
2986 | index = 0; | |
2987 | if (is_quattro_p(pdev)) | |
2988 | index = PCI_SLOT(pdev->devfn); | |
2989 | ||
2990 | if (pdev->resource[PCI_ROM_RESOURCE].parent == NULL) { | |
2991 | if (pci_assign_resource(pdev, PCI_ROM_RESOURCE) < 0) | |
2992 | goto use_random; | |
2993 | } | |
2994 | ||
2995 | pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_reg_orig); | |
2996 | pci_write_config_dword(pdev, pdev->rom_base_reg, | |
2997 | rom_reg_orig | PCI_ROM_ADDRESS_ENABLE); | |
2998 | ||
2999 | p = ioremap(pci_resource_start(pdev, PCI_ROM_RESOURCE), (64 * 1024)); | |
3000 | if (p != NULL && readb(p) == 0x55 && readb(p + 1) == 0xaa) | |
3001 | find_eth_addr_in_vpd(p, (64 * 1024), index, dev_addr); | |
3002 | ||
3003 | if (p != NULL) | |
3004 | iounmap(p); | |
3005 | ||
3006 | pci_write_config_dword(pdev, pdev->rom_base_reg, rom_reg_orig); | |
3007 | return; | |
3008 | ||
3009 | use_random: | |
3010 | /* Sun MAC prefix then 3 random bytes. */ | |
3011 | dev_addr[0] = 0x08; | |
3012 | dev_addr[1] = 0x00; | |
3013 | dev_addr[2] = 0x20; | |
3014 | get_random_bytes(&dev_addr[3], 3); | |
3015 | return; | |
3016 | } | |
3017 | #endif /* !(__sparc__) */ | |
3018 | ||
3019 | static int __init happy_meal_pci_init(struct pci_dev *pdev) | |
3020 | { | |
3021 | struct quattro *qp = NULL; | |
3022 | #ifdef __sparc__ | |
3023 | struct pcidev_cookie *pcp; | |
3024 | int node; | |
3025 | #endif | |
3026 | struct happy_meal *hp; | |
3027 | struct net_device *dev; | |
3028 | void __iomem *hpreg_base; | |
3029 | unsigned long hpreg_res; | |
3030 | int i, qfe_slot = -1; | |
3031 | char prom_name[64]; | |
3032 | int err; | |
3033 | ||
3034 | /* Now make sure pci_dev cookie is there. */ | |
3035 | #ifdef __sparc__ | |
3036 | pcp = pdev->sysdata; | |
3037 | if (pcp == NULL || pcp->prom_node == -1) { | |
3038 | printk(KERN_ERR "happymeal(PCI): Some PCI device info missing\n"); | |
3039 | return -ENODEV; | |
3040 | } | |
3041 | node = pcp->prom_node; | |
3042 | ||
3043 | prom_getstring(node, "name", prom_name, sizeof(prom_name)); | |
3044 | #else | |
3045 | if (is_quattro_p(pdev)) | |
3046 | strcpy(prom_name, "SUNW,qfe"); | |
3047 | else | |
3048 | strcpy(prom_name, "SUNW,hme"); | |
3049 | #endif | |
3050 | ||
3051 | err = -ENODEV; | |
3052 | if (!strcmp(prom_name, "SUNW,qfe") || !strcmp(prom_name, "qfe")) { | |
3053 | qp = quattro_pci_find(pdev); | |
3054 | if (qp == NULL) | |
3055 | goto err_out; | |
3056 | for (qfe_slot = 0; qfe_slot < 4; qfe_slot++) | |
3057 | if (qp->happy_meals[qfe_slot] == NULL) | |
3058 | break; | |
3059 | if (qfe_slot == 4) | |
3060 | goto err_out; | |
3061 | } | |
3062 | ||
3063 | dev = alloc_etherdev(sizeof(struct happy_meal)); | |
3064 | err = -ENOMEM; | |
3065 | if (!dev) | |
3066 | goto err_out; | |
3067 | SET_MODULE_OWNER(dev); | |
3068 | SET_NETDEV_DEV(dev, &pdev->dev); | |
3069 | ||
3070 | if (hme_version_printed++ == 0) | |
3071 | printk(KERN_INFO "%s", version); | |
3072 | ||
3073 | dev->base_addr = (long) pdev; | |
3074 | ||
3075 | hp = (struct happy_meal *)dev->priv; | |
3076 | memset(hp, 0, sizeof(*hp)); | |
3077 | ||
3078 | hp->happy_dev = pdev; | |
3079 | ||
3080 | spin_lock_init(&hp->happy_lock); | |
3081 | ||
3082 | if (qp != NULL) { | |
3083 | hp->qfe_parent = qp; | |
3084 | hp->qfe_ent = qfe_slot; | |
3085 | qp->happy_meals[qfe_slot] = dev; | |
3086 | } | |
3087 | ||
3088 | hpreg_res = pci_resource_start(pdev, 0); | |
3089 | err = -ENODEV; | |
3090 | if ((pci_resource_flags(pdev, 0) & IORESOURCE_IO) != 0) { | |
3091 | printk(KERN_ERR "happymeal(PCI): Cannot find proper PCI device base address.\n"); | |
3092 | goto err_out_clear_quattro; | |
3093 | } | |
3094 | if (pci_request_regions(pdev, DRV_NAME)) { | |
3095 | printk(KERN_ERR "happymeal(PCI): Cannot obtain PCI resources, " | |
3096 | "aborting.\n"); | |
3097 | goto err_out_clear_quattro; | |
3098 | } | |
3099 | ||
3100 | if ((hpreg_base = ioremap(hpreg_res, 0x8000)) == 0) { | |
3101 | printk(KERN_ERR "happymeal(PCI): Unable to remap card memory.\n"); | |
3102 | goto err_out_free_res; | |
3103 | } | |
3104 | ||
3105 | for (i = 0; i < 6; i++) { | |
3106 | if (macaddr[i] != 0) | |
3107 | break; | |
3108 | } | |
3109 | if (i < 6) { /* a mac address was given */ | |
3110 | for (i = 0; i < 6; i++) | |
3111 | dev->dev_addr[i] = macaddr[i]; | |
3112 | macaddr[5]++; | |
3113 | } else { | |
3114 | #ifdef __sparc__ | |
3115 | if (qfe_slot != -1 && | |
3116 | prom_getproplen(node, "local-mac-address") == 6) { | |
3117 | prom_getproperty(node, "local-mac-address", | |
3118 | dev->dev_addr, 6); | |
3119 | } else { | |
3120 | memcpy(dev->dev_addr, idprom->id_ethaddr, 6); | |
3121 | } | |
3122 | #else | |
3123 | get_hme_mac_nonsparc(pdev, &dev->dev_addr[0]); | |
3124 | #endif | |
3125 | } | |
3126 | ||
3127 | /* Layout registers. */ | |
3128 | hp->gregs = (hpreg_base + 0x0000UL); | |
3129 | hp->etxregs = (hpreg_base + 0x2000UL); | |
3130 | hp->erxregs = (hpreg_base + 0x4000UL); | |
3131 | hp->bigmacregs = (hpreg_base + 0x6000UL); | |
3132 | hp->tcvregs = (hpreg_base + 0x7000UL); | |
3133 | ||
3134 | #ifdef __sparc__ | |
3135 | hp->hm_revision = prom_getintdefault(node, "hm-rev", 0xff); | |
3136 | if (hp->hm_revision == 0xff) { | |
3137 | unsigned char prev; | |
3138 | ||
3139 | pci_read_config_byte(pdev, PCI_REVISION_ID, &prev); | |
3140 | hp->hm_revision = 0xc0 | (prev & 0x0f); | |
3141 | } | |
3142 | #else | |
3143 | /* works with this on non-sparc hosts */ | |
3144 | hp->hm_revision = 0x20; | |
3145 | #endif | |
3146 | ||
3147 | /* Now enable the feature flags we can. */ | |
3148 | if (hp->hm_revision == 0x20 || hp->hm_revision == 0x21) | |
3149 | hp->happy_flags = HFLAG_20_21; | |
3150 | else if (hp->hm_revision != 0xa0 && hp->hm_revision != 0xc0) | |
3151 | hp->happy_flags = HFLAG_NOT_A0; | |
3152 | ||
3153 | if (qp != NULL) | |
3154 | hp->happy_flags |= HFLAG_QUATTRO; | |
3155 | ||
3156 | /* And of course, indicate this is PCI. */ | |
3157 | hp->happy_flags |= HFLAG_PCI; | |
3158 | ||
3159 | #ifdef __sparc__ | |
3160 | /* Assume PCI happy meals can handle all burst sizes. */ | |
3161 | hp->happy_bursts = DMA_BURSTBITS; | |
3162 | #endif | |
3163 | ||
3164 | hp->happy_block = (struct hmeal_init_block *) | |
3165 | pci_alloc_consistent(pdev, PAGE_SIZE, &hp->hblock_dvma); | |
3166 | ||
3167 | err = -ENODEV; | |
3168 | if (!hp->happy_block) { | |
3169 | printk(KERN_ERR "happymeal(PCI): Cannot get hme init block.\n"); | |
3170 | goto err_out_iounmap; | |
3171 | } | |
3172 | ||
3173 | hp->linkcheck = 0; | |
3174 | hp->timer_state = asleep; | |
3175 | hp->timer_ticks = 0; | |
3176 | ||
3177 | init_timer(&hp->happy_timer); | |
3178 | ||
3179 | hp->dev = dev; | |
3180 | dev->open = &happy_meal_open; | |
3181 | dev->stop = &happy_meal_close; | |
3182 | dev->hard_start_xmit = &happy_meal_start_xmit; | |
3183 | dev->get_stats = &happy_meal_get_stats; | |
3184 | dev->set_multicast_list = &happy_meal_set_multicast; | |
3185 | dev->tx_timeout = &happy_meal_tx_timeout; | |
3186 | dev->watchdog_timeo = 5*HZ; | |
3187 | dev->ethtool_ops = &hme_ethtool_ops; | |
3188 | dev->irq = pdev->irq; | |
3189 | dev->dma = 0; | |
3190 | ||
3191 | /* Happy Meal can do it all... */ | |
3192 | dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM; | |
3193 | ||
3194 | #if defined(CONFIG_SBUS) && defined(CONFIG_PCI) | |
3195 | /* Hook up PCI register/dma accessors. */ | |
3196 | hp->read_desc32 = pci_hme_read_desc32; | |
3197 | hp->write_txd = pci_hme_write_txd; | |
3198 | hp->write_rxd = pci_hme_write_rxd; | |
3199 | hp->dma_map = (u32 (*)(void *, void *, long, int))pci_map_single; | |
3200 | hp->dma_unmap = (void (*)(void *, u32, long, int))pci_unmap_single; | |
3201 | hp->dma_sync_for_cpu = (void (*)(void *, u32, long, int)) | |
3202 | pci_dma_sync_single_for_cpu; | |
3203 | hp->dma_sync_for_device = (void (*)(void *, u32, long, int)) | |
3204 | pci_dma_sync_single_for_device; | |
3205 | hp->read32 = pci_hme_read32; | |
3206 | hp->write32 = pci_hme_write32; | |
3207 | #endif | |
3208 | ||
3209 | /* Grrr, Happy Meal comes up by default not advertising | |
3210 | * full duplex 100baseT capabilities, fix this. | |
3211 | */ | |
3212 | spin_lock_irq(&hp->happy_lock); | |
3213 | happy_meal_set_initial_advertisement(hp); | |
3214 | spin_unlock_irq(&hp->happy_lock); | |
3215 | ||
3216 | if (register_netdev(hp->dev)) { | |
3217 | printk(KERN_ERR "happymeal(PCI): Cannot register net device, " | |
3218 | "aborting.\n"); | |
3219 | goto err_out_iounmap; | |
3220 | } | |
3221 | ||
3222 | if (!qfe_slot) { | |
3223 | struct pci_dev *qpdev = qp->quattro_dev; | |
3224 | ||
3225 | prom_name[0] = 0; | |
3226 | if (!strncmp(dev->name, "eth", 3)) { | |
3227 | int i = simple_strtoul(dev->name + 3, NULL, 10); | |
3228 | sprintf(prom_name, "-%d", i + 3); | |
3229 | } | |
3230 | printk(KERN_INFO "%s%s: Quattro HME (PCI/CheerIO) 10/100baseT Ethernet ", dev->name, prom_name); | |
3231 | if (qpdev->vendor == PCI_VENDOR_ID_DEC && | |
3232 | qpdev->device == PCI_DEVICE_ID_DEC_21153) | |
3233 | printk("DEC 21153 PCI Bridge\n"); | |
3234 | else | |
3235 | printk("unknown bridge %04x.%04x\n", | |
3236 | qpdev->vendor, qpdev->device); | |
3237 | } | |
3238 | ||
3239 | if (qfe_slot != -1) | |
3240 | printk(KERN_INFO "%s: Quattro HME slot %d (PCI/CheerIO) 10/100baseT Ethernet ", | |
3241 | dev->name, qfe_slot); | |
3242 | else | |
3243 | printk(KERN_INFO "%s: HAPPY MEAL (PCI/CheerIO) 10/100BaseT Ethernet ", | |
3244 | dev->name); | |
3245 | ||
3246 | for (i = 0; i < 6; i++) | |
3247 | printk("%2.2x%c", dev->dev_addr[i], i == 5 ? ' ' : ':'); | |
3248 | ||
3249 | printk("\n"); | |
3250 | ||
3251 | /* We are home free at this point, link us in to the happy | |
3252 | * device list. | |
3253 | */ | |
3254 | hp->next_module = root_happy_dev; | |
3255 | root_happy_dev = hp; | |
3256 | ||
3257 | return 0; | |
3258 | ||
3259 | err_out_iounmap: | |
3260 | iounmap(hp->gregs); | |
3261 | ||
3262 | err_out_free_res: | |
3263 | pci_release_regions(pdev); | |
3264 | ||
3265 | err_out_clear_quattro: | |
3266 | if (qp != NULL) | |
3267 | qp->happy_meals[qfe_slot] = NULL; | |
3268 | ||
3269 | free_netdev(dev); | |
3270 | ||
3271 | err_out: | |
3272 | return err; | |
3273 | } | |
3274 | #endif | |
3275 | ||
3276 | #ifdef CONFIG_SBUS | |
3277 | static int __init happy_meal_sbus_probe(void) | |
3278 | { | |
3279 | struct sbus_bus *sbus; | |
3280 | struct sbus_dev *sdev; | |
3281 | int cards = 0; | |
3282 | char model[128]; | |
3283 | ||
3284 | for_each_sbus(sbus) { | |
3285 | for_each_sbusdev(sdev, sbus) { | |
3286 | char *name = sdev->prom_name; | |
3287 | ||
3288 | if (!strcmp(name, "SUNW,hme")) { | |
3289 | cards++; | |
3290 | prom_getstring(sdev->prom_node, "model", | |
3291 | model, sizeof(model)); | |
3292 | if (!strcmp(model, "SUNW,sbus-qfe")) | |
3293 | happy_meal_sbus_init(sdev, 1); | |
3294 | else | |
3295 | happy_meal_sbus_init(sdev, 0); | |
3296 | } else if (!strcmp(name, "qfe") || | |
3297 | !strcmp(name, "SUNW,qfe")) { | |
3298 | cards++; | |
3299 | happy_meal_sbus_init(sdev, 1); | |
3300 | } | |
3301 | } | |
3302 | } | |
3303 | if (cards != 0) | |
3304 | quattro_sbus_register_irqs(); | |
3305 | return cards; | |
3306 | } | |
3307 | #endif | |
3308 | ||
3309 | #ifdef CONFIG_PCI | |
3310 | static int __init happy_meal_pci_probe(void) | |
3311 | { | |
3312 | struct pci_dev *pdev = NULL; | |
3313 | int cards = 0; | |
3314 | ||
3315 | while ((pdev = pci_find_device(PCI_VENDOR_ID_SUN, | |
3316 | PCI_DEVICE_ID_SUN_HAPPYMEAL, pdev)) != NULL) { | |
3317 | if (pci_enable_device(pdev)) | |
3318 | continue; | |
3319 | pci_set_master(pdev); | |
3320 | cards++; | |
3321 | happy_meal_pci_init(pdev); | |
3322 | } | |
3323 | return cards; | |
3324 | } | |
3325 | #endif | |
3326 | ||
3327 | static int __init happy_meal_probe(void) | |
3328 | { | |
3329 | static int called = 0; | |
3330 | int cards; | |
3331 | ||
3332 | root_happy_dev = NULL; | |
3333 | ||
3334 | if (called) | |
3335 | return -ENODEV; | |
3336 | called++; | |
3337 | ||
3338 | cards = 0; | |
3339 | #ifdef CONFIG_SBUS | |
3340 | cards += happy_meal_sbus_probe(); | |
3341 | #endif | |
3342 | #ifdef CONFIG_PCI | |
3343 | cards += happy_meal_pci_probe(); | |
3344 | #endif | |
3345 | if (!cards) | |
3346 | return -ENODEV; | |
3347 | return 0; | |
3348 | } | |
3349 | ||
3350 | ||
3351 | static void __exit happy_meal_cleanup_module(void) | |
3352 | { | |
3353 | #ifdef CONFIG_SBUS | |
3354 | struct quattro *last_seen_qfe = NULL; | |
3355 | #endif | |
3356 | ||
3357 | while (root_happy_dev) { | |
3358 | struct happy_meal *hp = root_happy_dev; | |
3359 | struct happy_meal *next = root_happy_dev->next_module; | |
3360 | struct net_device *dev = hp->dev; | |
3361 | ||
3362 | /* Unregister netdev before unmapping registers as this | |
3363 | * call can end up trying to access those registers. | |
3364 | */ | |
3365 | unregister_netdev(dev); | |
3366 | ||
3367 | #ifdef CONFIG_SBUS | |
3368 | if (!(hp->happy_flags & HFLAG_PCI)) { | |
3369 | if (hp->happy_flags & HFLAG_QUATTRO) { | |
3370 | if (hp->qfe_parent != last_seen_qfe) { | |
3371 | free_irq(dev->irq, hp->qfe_parent); | |
3372 | last_seen_qfe = hp->qfe_parent; | |
3373 | } | |
3374 | } | |
3375 | ||
3376 | sbus_iounmap(hp->gregs, GREG_REG_SIZE); | |
3377 | sbus_iounmap(hp->etxregs, ETX_REG_SIZE); | |
3378 | sbus_iounmap(hp->erxregs, ERX_REG_SIZE); | |
3379 | sbus_iounmap(hp->bigmacregs, BMAC_REG_SIZE); | |
3380 | sbus_iounmap(hp->tcvregs, TCVR_REG_SIZE); | |
3381 | sbus_free_consistent(hp->happy_dev, | |
3382 | PAGE_SIZE, | |
3383 | hp->happy_block, | |
3384 | hp->hblock_dvma); | |
3385 | } | |
3386 | #endif | |
3387 | #ifdef CONFIG_PCI | |
3388 | if ((hp->happy_flags & HFLAG_PCI)) { | |
3389 | pci_free_consistent(hp->happy_dev, | |
3390 | PAGE_SIZE, | |
3391 | hp->happy_block, | |
3392 | hp->hblock_dvma); | |
3393 | iounmap(hp->gregs); | |
3394 | pci_release_regions(hp->happy_dev); | |
3395 | } | |
3396 | #endif | |
3397 | free_netdev(dev); | |
3398 | ||
3399 | root_happy_dev = next; | |
3400 | } | |
3401 | ||
3402 | /* Now cleanup the quattro lists. */ | |
3403 | #ifdef CONFIG_SBUS | |
3404 | while (qfe_sbus_list) { | |
3405 | struct quattro *qfe = qfe_sbus_list; | |
3406 | struct quattro *next = qfe->next; | |
3407 | ||
3408 | kfree(qfe); | |
3409 | ||
3410 | qfe_sbus_list = next; | |
3411 | } | |
3412 | #endif | |
3413 | #ifdef CONFIG_PCI | |
3414 | while (qfe_pci_list) { | |
3415 | struct quattro *qfe = qfe_pci_list; | |
3416 | struct quattro *next = qfe->next; | |
3417 | ||
3418 | kfree(qfe); | |
3419 | ||
3420 | qfe_pci_list = next; | |
3421 | } | |
3422 | #endif | |
3423 | } | |
3424 | ||
3425 | module_init(happy_meal_probe); | |
3426 | module_exit(happy_meal_cleanup_module); |