1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (C) 2006-2009 Freescale Semicondutor, Inc. All rights reserved.
4  *
5  * Author: Shlomi Gridish <gridish@freescale.com>
6  *	   Li Yang <leoli@freescale.com>
7  *
8  * Description:
9  * QE UCC Gigabit Ethernet Driver
10  */
11 
12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13 
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/errno.h>
17 #include <linux/slab.h>
18 #include <linux/stddef.h>
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
21 #include <linux/netdevice.h>
22 #include <linux/etherdevice.h>
23 #include <linux/skbuff.h>
24 #include <linux/spinlock.h>
25 #include <linux/mm.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/mii.h>
28 #include <linux/phy.h>
29 #include <linux/phy_fixed.h>
30 #include <linux/workqueue.h>
31 #include <linux/of_address.h>
32 #include <linux/of_irq.h>
33 #include <linux/of_mdio.h>
34 #include <linux/of_net.h>
35 #include <linux/of_platform.h>
36 
37 #include <linux/uaccess.h>
38 #include <asm/irq.h>
39 #include <asm/io.h>
40 #include <soc/fsl/qe/immap_qe.h>
41 #include <soc/fsl/qe/qe.h>
42 #include <soc/fsl/qe/ucc.h>
43 #include <soc/fsl/qe/ucc_fast.h>
44 #include <asm/machdep.h>
45 
46 #include "ucc_geth.h"
47 
48 #undef DEBUG
49 
50 #define ugeth_printk(level, format, arg...)  \
51         printk(level format "\n", ## arg)
52 
53 #define ugeth_dbg(format, arg...)            \
54         ugeth_printk(KERN_DEBUG , format , ## arg)
55 
56 #ifdef UGETH_VERBOSE_DEBUG
57 #define ugeth_vdbg ugeth_dbg
58 #else
59 #define ugeth_vdbg(fmt, args...) do { } while (0)
60 #endif				/* UGETH_VERBOSE_DEBUG */
61 #define UGETH_MSG_DEFAULT	(NETIF_MSG_IFUP << 1 ) - 1
62 
63 
64 static DEFINE_SPINLOCK(ugeth_lock);
65 
66 static struct {
67 	u32 msg_enable;
68 } debug = { -1 };
69 
70 module_param_named(debug, debug.msg_enable, int, 0);
71 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 0xffff=all)");
72 
ucc_geth_thread_count(enum ucc_geth_num_of_threads idx)73 static int ucc_geth_thread_count(enum ucc_geth_num_of_threads idx)
74 {
75 	static const u8 count[] = {
76 		[UCC_GETH_NUM_OF_THREADS_1] = 1,
77 		[UCC_GETH_NUM_OF_THREADS_2] = 2,
78 		[UCC_GETH_NUM_OF_THREADS_4] = 4,
79 		[UCC_GETH_NUM_OF_THREADS_6] = 6,
80 		[UCC_GETH_NUM_OF_THREADS_8] = 8,
81 	};
82 	if (idx >= ARRAY_SIZE(count))
83 		return 0;
84 	return count[idx];
85 }
86 
ucc_geth_tx_queues(const struct ucc_geth_info * info)87 static inline int ucc_geth_tx_queues(const struct ucc_geth_info *info)
88 {
89 	return 1;
90 }
91 
ucc_geth_rx_queues(const struct ucc_geth_info * info)92 static inline int ucc_geth_rx_queues(const struct ucc_geth_info *info)
93 {
94 	return 1;
95 }
96 
97 static const struct ucc_geth_info ugeth_primary_info = {
98 	.uf_info = {
99 		    .rtsm = UCC_FAST_SEND_IDLES_BETWEEN_FRAMES,
100 		    .max_rx_buf_length = 1536,
101 		    /* adjusted at startup if max-speed 1000 */
102 		    .urfs = UCC_GETH_URFS_INIT,
103 		    .urfet = UCC_GETH_URFET_INIT,
104 		    .urfset = UCC_GETH_URFSET_INIT,
105 		    .utfs = UCC_GETH_UTFS_INIT,
106 		    .utfet = UCC_GETH_UTFET_INIT,
107 		    .utftt = UCC_GETH_UTFTT_INIT,
108 		    .ufpt = 256,
109 		    .mode = UCC_FAST_PROTOCOL_MODE_ETHERNET,
110 		    .ttx_trx = UCC_FAST_GUMR_TRANSPARENT_TTX_TRX_NORMAL,
111 		    .tenc = UCC_FAST_TX_ENCODING_NRZ,
112 		    .renc = UCC_FAST_RX_ENCODING_NRZ,
113 		    .tcrc = UCC_FAST_16_BIT_CRC,
114 		    .synl = UCC_FAST_SYNC_LEN_NOT_USED,
115 		    },
116 	.extendedFilteringChainPointer = ((uint32_t) NULL),
117 	.typeorlen = 3072 /*1536 */ ,
118 	.nonBackToBackIfgPart1 = 0x40,
119 	.nonBackToBackIfgPart2 = 0x60,
120 	.miminumInterFrameGapEnforcement = 0x50,
121 	.backToBackInterFrameGap = 0x60,
122 	.mblinterval = 128,
123 	.nortsrbytetime = 5,
124 	.fracsiz = 1,
125 	.strictpriorityq = 0xff,
126 	.altBebTruncation = 0xa,
127 	.excessDefer = 1,
128 	.maxRetransmission = 0xf,
129 	.collisionWindow = 0x37,
130 	.receiveFlowControl = 1,
131 	.transmitFlowControl = 1,
132 	.maxGroupAddrInHash = 4,
133 	.maxIndAddrInHash = 4,
134 	.prel = 7,
135 	.maxFrameLength = 1518+16, /* Add extra bytes for VLANs etc. */
136 	.minFrameLength = 64,
137 	.maxD1Length = 1520+16, /* Add extra bytes for VLANs etc. */
138 	.maxD2Length = 1520+16, /* Add extra bytes for VLANs etc. */
139 	.vlantype = 0x8100,
140 	.ecamptr = ((uint32_t) NULL),
141 	.eventRegMask = UCCE_OTHER,
142 	.pausePeriod = 0xf000,
143 	.interruptcoalescingmaxvalue = {1, 1, 1, 1, 1, 1, 1, 1},
144 	.bdRingLenTx = {
145 			TX_BD_RING_LEN,
146 			TX_BD_RING_LEN,
147 			TX_BD_RING_LEN,
148 			TX_BD_RING_LEN,
149 			TX_BD_RING_LEN,
150 			TX_BD_RING_LEN,
151 			TX_BD_RING_LEN,
152 			TX_BD_RING_LEN},
153 
154 	.bdRingLenRx = {
155 			RX_BD_RING_LEN,
156 			RX_BD_RING_LEN,
157 			RX_BD_RING_LEN,
158 			RX_BD_RING_LEN,
159 			RX_BD_RING_LEN,
160 			RX_BD_RING_LEN,
161 			RX_BD_RING_LEN,
162 			RX_BD_RING_LEN},
163 
164 	.numStationAddresses = UCC_GETH_NUM_OF_STATION_ADDRESSES_1,
165 	.largestexternallookupkeysize =
166 	    QE_FLTR_LARGEST_EXTERNAL_TABLE_LOOKUP_KEY_SIZE_NONE,
167 	.statisticsMode = UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE |
168 		UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX |
169 		UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX,
170 	.vlanOperationTagged = UCC_GETH_VLAN_OPERATION_TAGGED_NOP,
171 	.vlanOperationNonTagged = UCC_GETH_VLAN_OPERATION_NON_TAGGED_NOP,
172 	.rxQoSMode = UCC_GETH_QOS_MODE_DEFAULT,
173 	.aufc = UPSMR_AUTOMATIC_FLOW_CONTROL_MODE_NONE,
174 	.padAndCrc = MACCFG2_PAD_AND_CRC_MODE_PAD_AND_CRC,
175 	.numThreadsTx = UCC_GETH_NUM_OF_THREADS_1,
176 	.numThreadsRx = UCC_GETH_NUM_OF_THREADS_1,
177 	.riscTx = QE_RISC_ALLOCATION_RISC1_AND_RISC2,
178 	.riscRx = QE_RISC_ALLOCATION_RISC1_AND_RISC2,
179 };
180 
181 #ifdef DEBUG
mem_disp(u8 * addr,int size)182 static void mem_disp(u8 *addr, int size)
183 {
184 	u8 *i;
185 	int size16Aling = (size >> 4) << 4;
186 	int size4Aling = (size >> 2) << 2;
187 	int notAlign = 0;
188 	if (size % 16)
189 		notAlign = 1;
190 
191 	for (i = addr; (u32) i < (u32) addr + size16Aling; i += 16)
192 		printk("0x%08x: %08x %08x %08x %08x\r\n",
193 		       (u32) i,
194 		       *((u32 *) (i)),
195 		       *((u32 *) (i + 4)),
196 		       *((u32 *) (i + 8)), *((u32 *) (i + 12)));
197 	if (notAlign == 1)
198 		printk("0x%08x: ", (u32) i);
199 	for (; (u32) i < (u32) addr + size4Aling; i += 4)
200 		printk("%08x ", *((u32 *) (i)));
201 	for (; (u32) i < (u32) addr + size; i++)
202 		printk("%02x", *((i)));
203 	if (notAlign == 1)
204 		printk("\r\n");
205 }
206 #endif /* DEBUG */
207 
dequeue(struct list_head * lh)208 static struct list_head *dequeue(struct list_head *lh)
209 {
210 	unsigned long flags;
211 
212 	spin_lock_irqsave(&ugeth_lock, flags);
213 	if (!list_empty(lh)) {
214 		struct list_head *node = lh->next;
215 		list_del(node);
216 		spin_unlock_irqrestore(&ugeth_lock, flags);
217 		return node;
218 	} else {
219 		spin_unlock_irqrestore(&ugeth_lock, flags);
220 		return NULL;
221 	}
222 }
223 
get_new_skb(struct ucc_geth_private * ugeth,u8 __iomem * bd)224 static struct sk_buff *get_new_skb(struct ucc_geth_private *ugeth,
225 		u8 __iomem *bd)
226 {
227 	struct sk_buff *skb;
228 
229 	skb = netdev_alloc_skb(ugeth->ndev,
230 			       ugeth->ug_info->uf_info.max_rx_buf_length +
231 			       UCC_GETH_RX_DATA_BUF_ALIGNMENT);
232 	if (!skb)
233 		return NULL;
234 
235 	/* We need the data buffer to be aligned properly.  We will reserve
236 	 * as many bytes as needed to align the data properly
237 	 */
238 	skb_reserve(skb,
239 		    UCC_GETH_RX_DATA_BUF_ALIGNMENT -
240 		    (((unsigned)skb->data) & (UCC_GETH_RX_DATA_BUF_ALIGNMENT -
241 					      1)));
242 
243 	out_be32(&((struct qe_bd __iomem *)bd)->buf,
244 		      dma_map_single(ugeth->dev,
245 				     skb->data,
246 				     ugeth->ug_info->uf_info.max_rx_buf_length +
247 				     UCC_GETH_RX_DATA_BUF_ALIGNMENT,
248 				     DMA_FROM_DEVICE));
249 
250 	out_be32((u32 __iomem *)bd,
251 			(R_E | R_I | (in_be32((u32 __iomem*)bd) & R_W)));
252 
253 	return skb;
254 }
255 
rx_bd_buffer_set(struct ucc_geth_private * ugeth,u8 rxQ)256 static int rx_bd_buffer_set(struct ucc_geth_private *ugeth, u8 rxQ)
257 {
258 	u8 __iomem *bd;
259 	u32 bd_status;
260 	struct sk_buff *skb;
261 	int i;
262 
263 	bd = ugeth->p_rx_bd_ring[rxQ];
264 	i = 0;
265 
266 	do {
267 		bd_status = in_be32((u32 __iomem *)bd);
268 		skb = get_new_skb(ugeth, bd);
269 
270 		if (!skb)	/* If can not allocate data buffer,
271 				abort. Cleanup will be elsewhere */
272 			return -ENOMEM;
273 
274 		ugeth->rx_skbuff[rxQ][i] = skb;
275 
276 		/* advance the BD pointer */
277 		bd += sizeof(struct qe_bd);
278 		i++;
279 	} while (!(bd_status & R_W));
280 
281 	return 0;
282 }
283 
fill_init_enet_entries(struct ucc_geth_private * ugeth,u32 * p_start,u8 num_entries,u32 thread_size,u32 thread_alignment,unsigned int risc,int skip_page_for_first_entry)284 static int fill_init_enet_entries(struct ucc_geth_private *ugeth,
285 				  u32 *p_start,
286 				  u8 num_entries,
287 				  u32 thread_size,
288 				  u32 thread_alignment,
289 				  unsigned int risc,
290 				  int skip_page_for_first_entry)
291 {
292 	u32 init_enet_offset;
293 	u8 i;
294 	int snum;
295 
296 	for (i = 0; i < num_entries; i++) {
297 		if ((snum = qe_get_snum()) < 0) {
298 			if (netif_msg_ifup(ugeth))
299 				pr_err("Can not get SNUM\n");
300 			return snum;
301 		}
302 		if ((i == 0) && skip_page_for_first_entry)
303 		/* First entry of Rx does not have page */
304 			init_enet_offset = 0;
305 		else {
306 			init_enet_offset =
307 			    qe_muram_alloc(thread_size, thread_alignment);
308 			if (IS_ERR_VALUE(init_enet_offset)) {
309 				if (netif_msg_ifup(ugeth))
310 					pr_err("Can not allocate DPRAM memory\n");
311 				qe_put_snum((u8) snum);
312 				return -ENOMEM;
313 			}
314 		}
315 		*(p_start++) =
316 		    ((u8) snum << ENET_INIT_PARAM_SNUM_SHIFT) | init_enet_offset
317 		    | risc;
318 	}
319 
320 	return 0;
321 }
322 
return_init_enet_entries(struct ucc_geth_private * ugeth,u32 * p_start,u8 num_entries,unsigned int risc,int skip_page_for_first_entry)323 static int return_init_enet_entries(struct ucc_geth_private *ugeth,
324 				    u32 *p_start,
325 				    u8 num_entries,
326 				    unsigned int risc,
327 				    int skip_page_for_first_entry)
328 {
329 	u32 init_enet_offset;
330 	u8 i;
331 	int snum;
332 
333 	for (i = 0; i < num_entries; i++) {
334 		u32 val = *p_start;
335 
336 		/* Check that this entry was actually valid --
337 		needed in case failed in allocations */
338 		if ((val & ENET_INIT_PARAM_RISC_MASK) == risc) {
339 			snum =
340 			    (u32) (val & ENET_INIT_PARAM_SNUM_MASK) >>
341 			    ENET_INIT_PARAM_SNUM_SHIFT;
342 			qe_put_snum((u8) snum);
343 			if (!((i == 0) && skip_page_for_first_entry)) {
344 			/* First entry of Rx does not have page */
345 				init_enet_offset =
346 				    (val & ENET_INIT_PARAM_PTR_MASK);
347 				qe_muram_free(init_enet_offset);
348 			}
349 			*p_start++ = 0;
350 		}
351 	}
352 
353 	return 0;
354 }
355 
356 #ifdef DEBUG
dump_init_enet_entries(struct ucc_geth_private * ugeth,u32 __iomem * p_start,u8 num_entries,u32 thread_size,unsigned int risc,int skip_page_for_first_entry)357 static int dump_init_enet_entries(struct ucc_geth_private *ugeth,
358 				  u32 __iomem *p_start,
359 				  u8 num_entries,
360 				  u32 thread_size,
361 				  unsigned int risc,
362 				  int skip_page_for_first_entry)
363 {
364 	u32 init_enet_offset;
365 	u8 i;
366 	int snum;
367 
368 	for (i = 0; i < num_entries; i++) {
369 		u32 val = in_be32(p_start);
370 
371 		/* Check that this entry was actually valid --
372 		needed in case failed in allocations */
373 		if ((val & ENET_INIT_PARAM_RISC_MASK) == risc) {
374 			snum =
375 			    (u32) (val & ENET_INIT_PARAM_SNUM_MASK) >>
376 			    ENET_INIT_PARAM_SNUM_SHIFT;
377 			qe_put_snum((u8) snum);
378 			if (!((i == 0) && skip_page_for_first_entry)) {
379 			/* First entry of Rx does not have page */
380 				init_enet_offset =
381 				    (in_be32(p_start) &
382 				     ENET_INIT_PARAM_PTR_MASK);
383 				pr_info("Init enet entry %d:\n", i);
384 				pr_info("Base address: 0x%08x\n",
385 					(u32)qe_muram_addr(init_enet_offset));
386 				mem_disp(qe_muram_addr(init_enet_offset),
387 					 thread_size);
388 			}
389 			p_start++;
390 		}
391 	}
392 
393 	return 0;
394 }
395 #endif
396 
put_enet_addr_container(struct enet_addr_container * enet_addr_cont)397 static void put_enet_addr_container(struct enet_addr_container *enet_addr_cont)
398 {
399 	kfree(enet_addr_cont);
400 }
401 
set_mac_addr(__be16 __iomem * reg,u8 * mac)402 static void set_mac_addr(__be16 __iomem *reg, u8 *mac)
403 {
404 	out_be16(&reg[0], ((u16)mac[5] << 8) | mac[4]);
405 	out_be16(&reg[1], ((u16)mac[3] << 8) | mac[2]);
406 	out_be16(&reg[2], ((u16)mac[1] << 8) | mac[0]);
407 }
408 
hw_clear_addr_in_paddr(struct ucc_geth_private * ugeth,u8 paddr_num)409 static int hw_clear_addr_in_paddr(struct ucc_geth_private *ugeth, u8 paddr_num)
410 {
411 	struct ucc_geth_82xx_address_filtering_pram __iomem *p_82xx_addr_filt;
412 
413 	if (paddr_num >= NUM_OF_PADDRS) {
414 		pr_warn("%s: Invalid paddr_num: %u\n", __func__, paddr_num);
415 		return -EINVAL;
416 	}
417 
418 	p_82xx_addr_filt =
419 	    (struct ucc_geth_82xx_address_filtering_pram __iomem *) ugeth->p_rx_glbl_pram->
420 	    addressfiltering;
421 
422 	/* Writing address ff.ff.ff.ff.ff.ff disables address
423 	recognition for this register */
424 	out_be16(&p_82xx_addr_filt->paddr[paddr_num].h, 0xffff);
425 	out_be16(&p_82xx_addr_filt->paddr[paddr_num].m, 0xffff);
426 	out_be16(&p_82xx_addr_filt->paddr[paddr_num].l, 0xffff);
427 
428 	return 0;
429 }
430 
hw_add_addr_in_hash(struct ucc_geth_private * ugeth,u8 * p_enet_addr)431 static void hw_add_addr_in_hash(struct ucc_geth_private *ugeth,
432                                 u8 *p_enet_addr)
433 {
434 	struct ucc_geth_82xx_address_filtering_pram __iomem *p_82xx_addr_filt;
435 	u32 cecr_subblock;
436 
437 	p_82xx_addr_filt =
438 	    (struct ucc_geth_82xx_address_filtering_pram __iomem *) ugeth->p_rx_glbl_pram->
439 	    addressfiltering;
440 
441 	cecr_subblock =
442 	    ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
443 
444 	/* Ethernet frames are defined in Little Endian mode,
445 	therefore to insert */
446 	/* the address to the hash (Big Endian mode), we reverse the bytes.*/
447 
448 	set_mac_addr(&p_82xx_addr_filt->taddr.h, p_enet_addr);
449 
450 	qe_issue_cmd(QE_SET_GROUP_ADDRESS, cecr_subblock,
451 		     QE_CR_PROTOCOL_ETHERNET, 0);
452 }
453 
454 #ifdef DEBUG
get_statistics(struct ucc_geth_private * ugeth,struct ucc_geth_tx_firmware_statistics * tx_firmware_statistics,struct ucc_geth_rx_firmware_statistics * rx_firmware_statistics,struct ucc_geth_hardware_statistics * hardware_statistics)455 static void get_statistics(struct ucc_geth_private *ugeth,
456 			   struct ucc_geth_tx_firmware_statistics *
457 			   tx_firmware_statistics,
458 			   struct ucc_geth_rx_firmware_statistics *
459 			   rx_firmware_statistics,
460 			   struct ucc_geth_hardware_statistics *hardware_statistics)
461 {
462 	struct ucc_fast __iomem *uf_regs;
463 	struct ucc_geth __iomem *ug_regs;
464 	struct ucc_geth_tx_firmware_statistics_pram *p_tx_fw_statistics_pram;
465 	struct ucc_geth_rx_firmware_statistics_pram *p_rx_fw_statistics_pram;
466 
467 	ug_regs = ugeth->ug_regs;
468 	uf_regs = (struct ucc_fast __iomem *) ug_regs;
469 	p_tx_fw_statistics_pram = ugeth->p_tx_fw_statistics_pram;
470 	p_rx_fw_statistics_pram = ugeth->p_rx_fw_statistics_pram;
471 
472 	/* Tx firmware only if user handed pointer and driver actually
473 	gathers Tx firmware statistics */
474 	if (tx_firmware_statistics && p_tx_fw_statistics_pram) {
475 		tx_firmware_statistics->sicoltx =
476 		    in_be32(&p_tx_fw_statistics_pram->sicoltx);
477 		tx_firmware_statistics->mulcoltx =
478 		    in_be32(&p_tx_fw_statistics_pram->mulcoltx);
479 		tx_firmware_statistics->latecoltxfr =
480 		    in_be32(&p_tx_fw_statistics_pram->latecoltxfr);
481 		tx_firmware_statistics->frabortduecol =
482 		    in_be32(&p_tx_fw_statistics_pram->frabortduecol);
483 		tx_firmware_statistics->frlostinmactxer =
484 		    in_be32(&p_tx_fw_statistics_pram->frlostinmactxer);
485 		tx_firmware_statistics->carriersenseertx =
486 		    in_be32(&p_tx_fw_statistics_pram->carriersenseertx);
487 		tx_firmware_statistics->frtxok =
488 		    in_be32(&p_tx_fw_statistics_pram->frtxok);
489 		tx_firmware_statistics->txfrexcessivedefer =
490 		    in_be32(&p_tx_fw_statistics_pram->txfrexcessivedefer);
491 		tx_firmware_statistics->txpkts256 =
492 		    in_be32(&p_tx_fw_statistics_pram->txpkts256);
493 		tx_firmware_statistics->txpkts512 =
494 		    in_be32(&p_tx_fw_statistics_pram->txpkts512);
495 		tx_firmware_statistics->txpkts1024 =
496 		    in_be32(&p_tx_fw_statistics_pram->txpkts1024);
497 		tx_firmware_statistics->txpktsjumbo =
498 		    in_be32(&p_tx_fw_statistics_pram->txpktsjumbo);
499 	}
500 
501 	/* Rx firmware only if user handed pointer and driver actually
502 	 * gathers Rx firmware statistics */
503 	if (rx_firmware_statistics && p_rx_fw_statistics_pram) {
504 		int i;
505 		rx_firmware_statistics->frrxfcser =
506 		    in_be32(&p_rx_fw_statistics_pram->frrxfcser);
507 		rx_firmware_statistics->fraligner =
508 		    in_be32(&p_rx_fw_statistics_pram->fraligner);
509 		rx_firmware_statistics->inrangelenrxer =
510 		    in_be32(&p_rx_fw_statistics_pram->inrangelenrxer);
511 		rx_firmware_statistics->outrangelenrxer =
512 		    in_be32(&p_rx_fw_statistics_pram->outrangelenrxer);
513 		rx_firmware_statistics->frtoolong =
514 		    in_be32(&p_rx_fw_statistics_pram->frtoolong);
515 		rx_firmware_statistics->runt =
516 		    in_be32(&p_rx_fw_statistics_pram->runt);
517 		rx_firmware_statistics->verylongevent =
518 		    in_be32(&p_rx_fw_statistics_pram->verylongevent);
519 		rx_firmware_statistics->symbolerror =
520 		    in_be32(&p_rx_fw_statistics_pram->symbolerror);
521 		rx_firmware_statistics->dropbsy =
522 		    in_be32(&p_rx_fw_statistics_pram->dropbsy);
523 		for (i = 0; i < 0x8; i++)
524 			rx_firmware_statistics->res0[i] =
525 			    p_rx_fw_statistics_pram->res0[i];
526 		rx_firmware_statistics->mismatchdrop =
527 		    in_be32(&p_rx_fw_statistics_pram->mismatchdrop);
528 		rx_firmware_statistics->underpkts =
529 		    in_be32(&p_rx_fw_statistics_pram->underpkts);
530 		rx_firmware_statistics->pkts256 =
531 		    in_be32(&p_rx_fw_statistics_pram->pkts256);
532 		rx_firmware_statistics->pkts512 =
533 		    in_be32(&p_rx_fw_statistics_pram->pkts512);
534 		rx_firmware_statistics->pkts1024 =
535 		    in_be32(&p_rx_fw_statistics_pram->pkts1024);
536 		rx_firmware_statistics->pktsjumbo =
537 		    in_be32(&p_rx_fw_statistics_pram->pktsjumbo);
538 		rx_firmware_statistics->frlossinmacer =
539 		    in_be32(&p_rx_fw_statistics_pram->frlossinmacer);
540 		rx_firmware_statistics->pausefr =
541 		    in_be32(&p_rx_fw_statistics_pram->pausefr);
542 		for (i = 0; i < 0x4; i++)
543 			rx_firmware_statistics->res1[i] =
544 			    p_rx_fw_statistics_pram->res1[i];
545 		rx_firmware_statistics->removevlan =
546 		    in_be32(&p_rx_fw_statistics_pram->removevlan);
547 		rx_firmware_statistics->replacevlan =
548 		    in_be32(&p_rx_fw_statistics_pram->replacevlan);
549 		rx_firmware_statistics->insertvlan =
550 		    in_be32(&p_rx_fw_statistics_pram->insertvlan);
551 	}
552 
553 	/* Hardware only if user handed pointer and driver actually
554 	gathers hardware statistics */
555 	if (hardware_statistics &&
556 	    (in_be32(&uf_regs->upsmr) & UCC_GETH_UPSMR_HSE)) {
557 		hardware_statistics->tx64 = in_be32(&ug_regs->tx64);
558 		hardware_statistics->tx127 = in_be32(&ug_regs->tx127);
559 		hardware_statistics->tx255 = in_be32(&ug_regs->tx255);
560 		hardware_statistics->rx64 = in_be32(&ug_regs->rx64);
561 		hardware_statistics->rx127 = in_be32(&ug_regs->rx127);
562 		hardware_statistics->rx255 = in_be32(&ug_regs->rx255);
563 		hardware_statistics->txok = in_be32(&ug_regs->txok);
564 		hardware_statistics->txcf = in_be16(&ug_regs->txcf);
565 		hardware_statistics->tmca = in_be32(&ug_regs->tmca);
566 		hardware_statistics->tbca = in_be32(&ug_regs->tbca);
567 		hardware_statistics->rxfok = in_be32(&ug_regs->rxfok);
568 		hardware_statistics->rxbok = in_be32(&ug_regs->rxbok);
569 		hardware_statistics->rbyt = in_be32(&ug_regs->rbyt);
570 		hardware_statistics->rmca = in_be32(&ug_regs->rmca);
571 		hardware_statistics->rbca = in_be32(&ug_regs->rbca);
572 	}
573 }
574 
dump_bds(struct ucc_geth_private * ugeth)575 static void dump_bds(struct ucc_geth_private *ugeth)
576 {
577 	int i;
578 	int length;
579 
580 	for (i = 0; i < ucc_geth_tx_queues(ugeth->ug_info); i++) {
581 		if (ugeth->p_tx_bd_ring[i]) {
582 			length =
583 			    (ugeth->ug_info->bdRingLenTx[i] *
584 			     sizeof(struct qe_bd));
585 			pr_info("TX BDs[%d]\n", i);
586 			mem_disp(ugeth->p_tx_bd_ring[i], length);
587 		}
588 	}
589 	for (i = 0; i < ucc_geth_rx_queues(ugeth->ug_info); i++) {
590 		if (ugeth->p_rx_bd_ring[i]) {
591 			length =
592 			    (ugeth->ug_info->bdRingLenRx[i] *
593 			     sizeof(struct qe_bd));
594 			pr_info("RX BDs[%d]\n", i);
595 			mem_disp(ugeth->p_rx_bd_ring[i], length);
596 		}
597 	}
598 }
599 
dump_regs(struct ucc_geth_private * ugeth)600 static void dump_regs(struct ucc_geth_private *ugeth)
601 {
602 	int i;
603 
604 	pr_info("UCC%d Geth registers:\n", ugeth->ug_info->uf_info.ucc_num + 1);
605 	pr_info("Base address: 0x%08x\n", (u32)ugeth->ug_regs);
606 
607 	pr_info("maccfg1    : addr - 0x%08x, val - 0x%08x\n",
608 		(u32)&ugeth->ug_regs->maccfg1,
609 		in_be32(&ugeth->ug_regs->maccfg1));
610 	pr_info("maccfg2    : addr - 0x%08x, val - 0x%08x\n",
611 		(u32)&ugeth->ug_regs->maccfg2,
612 		in_be32(&ugeth->ug_regs->maccfg2));
613 	pr_info("ipgifg     : addr - 0x%08x, val - 0x%08x\n",
614 		(u32)&ugeth->ug_regs->ipgifg,
615 		in_be32(&ugeth->ug_regs->ipgifg));
616 	pr_info("hafdup     : addr - 0x%08x, val - 0x%08x\n",
617 		(u32)&ugeth->ug_regs->hafdup,
618 		in_be32(&ugeth->ug_regs->hafdup));
619 	pr_info("ifctl      : addr - 0x%08x, val - 0x%08x\n",
620 		(u32)&ugeth->ug_regs->ifctl,
621 		in_be32(&ugeth->ug_regs->ifctl));
622 	pr_info("ifstat     : addr - 0x%08x, val - 0x%08x\n",
623 		(u32)&ugeth->ug_regs->ifstat,
624 		in_be32(&ugeth->ug_regs->ifstat));
625 	pr_info("macstnaddr1: addr - 0x%08x, val - 0x%08x\n",
626 		(u32)&ugeth->ug_regs->macstnaddr1,
627 		in_be32(&ugeth->ug_regs->macstnaddr1));
628 	pr_info("macstnaddr2: addr - 0x%08x, val - 0x%08x\n",
629 		(u32)&ugeth->ug_regs->macstnaddr2,
630 		in_be32(&ugeth->ug_regs->macstnaddr2));
631 	pr_info("uempr      : addr - 0x%08x, val - 0x%08x\n",
632 		(u32)&ugeth->ug_regs->uempr,
633 		in_be32(&ugeth->ug_regs->uempr));
634 	pr_info("utbipar    : addr - 0x%08x, val - 0x%08x\n",
635 		(u32)&ugeth->ug_regs->utbipar,
636 		in_be32(&ugeth->ug_regs->utbipar));
637 	pr_info("uescr      : addr - 0x%08x, val - 0x%04x\n",
638 		(u32)&ugeth->ug_regs->uescr,
639 		in_be16(&ugeth->ug_regs->uescr));
640 	pr_info("tx64       : addr - 0x%08x, val - 0x%08x\n",
641 		(u32)&ugeth->ug_regs->tx64,
642 		in_be32(&ugeth->ug_regs->tx64));
643 	pr_info("tx127      : addr - 0x%08x, val - 0x%08x\n",
644 		(u32)&ugeth->ug_regs->tx127,
645 		in_be32(&ugeth->ug_regs->tx127));
646 	pr_info("tx255      : addr - 0x%08x, val - 0x%08x\n",
647 		(u32)&ugeth->ug_regs->tx255,
648 		in_be32(&ugeth->ug_regs->tx255));
649 	pr_info("rx64       : addr - 0x%08x, val - 0x%08x\n",
650 		(u32)&ugeth->ug_regs->rx64,
651 		in_be32(&ugeth->ug_regs->rx64));
652 	pr_info("rx127      : addr - 0x%08x, val - 0x%08x\n",
653 		(u32)&ugeth->ug_regs->rx127,
654 		in_be32(&ugeth->ug_regs->rx127));
655 	pr_info("rx255      : addr - 0x%08x, val - 0x%08x\n",
656 		(u32)&ugeth->ug_regs->rx255,
657 		in_be32(&ugeth->ug_regs->rx255));
658 	pr_info("txok       : addr - 0x%08x, val - 0x%08x\n",
659 		(u32)&ugeth->ug_regs->txok,
660 		in_be32(&ugeth->ug_regs->txok));
661 	pr_info("txcf       : addr - 0x%08x, val - 0x%04x\n",
662 		(u32)&ugeth->ug_regs->txcf,
663 		in_be16(&ugeth->ug_regs->txcf));
664 	pr_info("tmca       : addr - 0x%08x, val - 0x%08x\n",
665 		(u32)&ugeth->ug_regs->tmca,
666 		in_be32(&ugeth->ug_regs->tmca));
667 	pr_info("tbca       : addr - 0x%08x, val - 0x%08x\n",
668 		(u32)&ugeth->ug_regs->tbca,
669 		in_be32(&ugeth->ug_regs->tbca));
670 	pr_info("rxfok      : addr - 0x%08x, val - 0x%08x\n",
671 		(u32)&ugeth->ug_regs->rxfok,
672 		in_be32(&ugeth->ug_regs->rxfok));
673 	pr_info("rxbok      : addr - 0x%08x, val - 0x%08x\n",
674 		(u32)&ugeth->ug_regs->rxbok,
675 		in_be32(&ugeth->ug_regs->rxbok));
676 	pr_info("rbyt       : addr - 0x%08x, val - 0x%08x\n",
677 		(u32)&ugeth->ug_regs->rbyt,
678 		in_be32(&ugeth->ug_regs->rbyt));
679 	pr_info("rmca       : addr - 0x%08x, val - 0x%08x\n",
680 		(u32)&ugeth->ug_regs->rmca,
681 		in_be32(&ugeth->ug_regs->rmca));
682 	pr_info("rbca       : addr - 0x%08x, val - 0x%08x\n",
683 		(u32)&ugeth->ug_regs->rbca,
684 		in_be32(&ugeth->ug_regs->rbca));
685 	pr_info("scar       : addr - 0x%08x, val - 0x%08x\n",
686 		(u32)&ugeth->ug_regs->scar,
687 		in_be32(&ugeth->ug_regs->scar));
688 	pr_info("scam       : addr - 0x%08x, val - 0x%08x\n",
689 		(u32)&ugeth->ug_regs->scam,
690 		in_be32(&ugeth->ug_regs->scam));
691 
692 	if (ugeth->p_thread_data_tx) {
693 		int count = ucc_geth_thread_count(ugeth->ug_info->numThreadsTx);
694 
695 		pr_info("Thread data TXs:\n");
696 		pr_info("Base address: 0x%08x\n",
697 			(u32)ugeth->p_thread_data_tx);
698 		for (i = 0; i < count; i++) {
699 			pr_info("Thread data TX[%d]:\n", i);
700 			pr_info("Base address: 0x%08x\n",
701 				(u32)&ugeth->p_thread_data_tx[i]);
702 			mem_disp((u8 *) & ugeth->p_thread_data_tx[i],
703 				 sizeof(struct ucc_geth_thread_data_tx));
704 		}
705 	}
706 	if (ugeth->p_thread_data_rx) {
707 		int count = ucc_geth_thread_count(ugeth->ug_info->numThreadsRx);
708 
709 		pr_info("Thread data RX:\n");
710 		pr_info("Base address: 0x%08x\n",
711 			(u32)ugeth->p_thread_data_rx);
712 		for (i = 0; i < count; i++) {
713 			pr_info("Thread data RX[%d]:\n", i);
714 			pr_info("Base address: 0x%08x\n",
715 				(u32)&ugeth->p_thread_data_rx[i]);
716 			mem_disp((u8 *) & ugeth->p_thread_data_rx[i],
717 				 sizeof(struct ucc_geth_thread_data_rx));
718 		}
719 	}
720 	if (ugeth->p_exf_glbl_param) {
721 		pr_info("EXF global param:\n");
722 		pr_info("Base address: 0x%08x\n",
723 			(u32)ugeth->p_exf_glbl_param);
724 		mem_disp((u8 *) ugeth->p_exf_glbl_param,
725 			 sizeof(*ugeth->p_exf_glbl_param));
726 	}
727 	if (ugeth->p_tx_glbl_pram) {
728 		pr_info("TX global param:\n");
729 		pr_info("Base address: 0x%08x\n", (u32)ugeth->p_tx_glbl_pram);
730 		pr_info("temoder      : addr - 0x%08x, val - 0x%04x\n",
731 			(u32)&ugeth->p_tx_glbl_pram->temoder,
732 			in_be16(&ugeth->p_tx_glbl_pram->temoder));
733 	       pr_info("sqptr        : addr - 0x%08x, val - 0x%08x\n",
734 			(u32)&ugeth->p_tx_glbl_pram->sqptr,
735 			in_be32(&ugeth->p_tx_glbl_pram->sqptr));
736 		pr_info("schedulerbasepointer: addr - 0x%08x, val - 0x%08x\n",
737 			(u32)&ugeth->p_tx_glbl_pram->schedulerbasepointer,
738 			in_be32(&ugeth->p_tx_glbl_pram->schedulerbasepointer));
739 		pr_info("txrmonbaseptr: addr - 0x%08x, val - 0x%08x\n",
740 			(u32)&ugeth->p_tx_glbl_pram->txrmonbaseptr,
741 			in_be32(&ugeth->p_tx_glbl_pram->txrmonbaseptr));
742 		pr_info("tstate       : addr - 0x%08x, val - 0x%08x\n",
743 			(u32)&ugeth->p_tx_glbl_pram->tstate,
744 			in_be32(&ugeth->p_tx_glbl_pram->tstate));
745 		pr_info("iphoffset[0] : addr - 0x%08x, val - 0x%02x\n",
746 			(u32)&ugeth->p_tx_glbl_pram->iphoffset[0],
747 			ugeth->p_tx_glbl_pram->iphoffset[0]);
748 		pr_info("iphoffset[1] : addr - 0x%08x, val - 0x%02x\n",
749 			(u32)&ugeth->p_tx_glbl_pram->iphoffset[1],
750 			ugeth->p_tx_glbl_pram->iphoffset[1]);
751 		pr_info("iphoffset[2] : addr - 0x%08x, val - 0x%02x\n",
752 			(u32)&ugeth->p_tx_glbl_pram->iphoffset[2],
753 			ugeth->p_tx_glbl_pram->iphoffset[2]);
754 		pr_info("iphoffset[3] : addr - 0x%08x, val - 0x%02x\n",
755 			(u32)&ugeth->p_tx_glbl_pram->iphoffset[3],
756 			ugeth->p_tx_glbl_pram->iphoffset[3]);
757 		pr_info("iphoffset[4] : addr - 0x%08x, val - 0x%02x\n",
758 			(u32)&ugeth->p_tx_glbl_pram->iphoffset[4],
759 			ugeth->p_tx_glbl_pram->iphoffset[4]);
760 		pr_info("iphoffset[5] : addr - 0x%08x, val - 0x%02x\n",
761 			(u32)&ugeth->p_tx_glbl_pram->iphoffset[5],
762 			ugeth->p_tx_glbl_pram->iphoffset[5]);
763 		pr_info("iphoffset[6] : addr - 0x%08x, val - 0x%02x\n",
764 			(u32)&ugeth->p_tx_glbl_pram->iphoffset[6],
765 			ugeth->p_tx_glbl_pram->iphoffset[6]);
766 		pr_info("iphoffset[7] : addr - 0x%08x, val - 0x%02x\n",
767 			(u32)&ugeth->p_tx_glbl_pram->iphoffset[7],
768 			ugeth->p_tx_glbl_pram->iphoffset[7]);
769 		pr_info("vtagtable[0] : addr - 0x%08x, val - 0x%08x\n",
770 			(u32)&ugeth->p_tx_glbl_pram->vtagtable[0],
771 			in_be32(&ugeth->p_tx_glbl_pram->vtagtable[0]));
772 		pr_info("vtagtable[1] : addr - 0x%08x, val - 0x%08x\n",
773 			(u32)&ugeth->p_tx_glbl_pram->vtagtable[1],
774 			in_be32(&ugeth->p_tx_glbl_pram->vtagtable[1]));
775 		pr_info("vtagtable[2] : addr - 0x%08x, val - 0x%08x\n",
776 			(u32)&ugeth->p_tx_glbl_pram->vtagtable[2],
777 			in_be32(&ugeth->p_tx_glbl_pram->vtagtable[2]));
778 		pr_info("vtagtable[3] : addr - 0x%08x, val - 0x%08x\n",
779 			(u32)&ugeth->p_tx_glbl_pram->vtagtable[3],
780 			in_be32(&ugeth->p_tx_glbl_pram->vtagtable[3]));
781 		pr_info("vtagtable[4] : addr - 0x%08x, val - 0x%08x\n",
782 			(u32)&ugeth->p_tx_glbl_pram->vtagtable[4],
783 			in_be32(&ugeth->p_tx_glbl_pram->vtagtable[4]));
784 		pr_info("vtagtable[5] : addr - 0x%08x, val - 0x%08x\n",
785 			(u32)&ugeth->p_tx_glbl_pram->vtagtable[5],
786 			in_be32(&ugeth->p_tx_glbl_pram->vtagtable[5]));
787 		pr_info("vtagtable[6] : addr - 0x%08x, val - 0x%08x\n",
788 			(u32)&ugeth->p_tx_glbl_pram->vtagtable[6],
789 			in_be32(&ugeth->p_tx_glbl_pram->vtagtable[6]));
790 		pr_info("vtagtable[7] : addr - 0x%08x, val - 0x%08x\n",
791 			(u32)&ugeth->p_tx_glbl_pram->vtagtable[7],
792 			in_be32(&ugeth->p_tx_glbl_pram->vtagtable[7]));
793 		pr_info("tqptr        : addr - 0x%08x, val - 0x%08x\n",
794 			(u32)&ugeth->p_tx_glbl_pram->tqptr,
795 			in_be32(&ugeth->p_tx_glbl_pram->tqptr));
796 	}
797 	if (ugeth->p_rx_glbl_pram) {
798 		pr_info("RX global param:\n");
799 		pr_info("Base address: 0x%08x\n", (u32)ugeth->p_rx_glbl_pram);
800 		pr_info("remoder         : addr - 0x%08x, val - 0x%08x\n",
801 			(u32)&ugeth->p_rx_glbl_pram->remoder,
802 			in_be32(&ugeth->p_rx_glbl_pram->remoder));
803 		pr_info("rqptr           : addr - 0x%08x, val - 0x%08x\n",
804 			(u32)&ugeth->p_rx_glbl_pram->rqptr,
805 			in_be32(&ugeth->p_rx_glbl_pram->rqptr));
806 		pr_info("typeorlen       : addr - 0x%08x, val - 0x%04x\n",
807 			(u32)&ugeth->p_rx_glbl_pram->typeorlen,
808 			in_be16(&ugeth->p_rx_glbl_pram->typeorlen));
809 		pr_info("rxgstpack       : addr - 0x%08x, val - 0x%02x\n",
810 			(u32)&ugeth->p_rx_glbl_pram->rxgstpack,
811 			ugeth->p_rx_glbl_pram->rxgstpack);
812 		pr_info("rxrmonbaseptr   : addr - 0x%08x, val - 0x%08x\n",
813 			(u32)&ugeth->p_rx_glbl_pram->rxrmonbaseptr,
814 			in_be32(&ugeth->p_rx_glbl_pram->rxrmonbaseptr));
815 		pr_info("intcoalescingptr: addr - 0x%08x, val - 0x%08x\n",
816 			(u32)&ugeth->p_rx_glbl_pram->intcoalescingptr,
817 			in_be32(&ugeth->p_rx_glbl_pram->intcoalescingptr));
818 		pr_info("rstate          : addr - 0x%08x, val - 0x%02x\n",
819 			(u32)&ugeth->p_rx_glbl_pram->rstate,
820 			ugeth->p_rx_glbl_pram->rstate);
821 		pr_info("mrblr           : addr - 0x%08x, val - 0x%04x\n",
822 			(u32)&ugeth->p_rx_glbl_pram->mrblr,
823 			in_be16(&ugeth->p_rx_glbl_pram->mrblr));
824 		pr_info("rbdqptr         : addr - 0x%08x, val - 0x%08x\n",
825 			(u32)&ugeth->p_rx_glbl_pram->rbdqptr,
826 			in_be32(&ugeth->p_rx_glbl_pram->rbdqptr));
827 		pr_info("mflr            : addr - 0x%08x, val - 0x%04x\n",
828 			(u32)&ugeth->p_rx_glbl_pram->mflr,
829 			in_be16(&ugeth->p_rx_glbl_pram->mflr));
830 		pr_info("minflr          : addr - 0x%08x, val - 0x%04x\n",
831 			(u32)&ugeth->p_rx_glbl_pram->minflr,
832 			in_be16(&ugeth->p_rx_glbl_pram->minflr));
833 		pr_info("maxd1           : addr - 0x%08x, val - 0x%04x\n",
834 			(u32)&ugeth->p_rx_glbl_pram->maxd1,
835 			in_be16(&ugeth->p_rx_glbl_pram->maxd1));
836 		pr_info("maxd2           : addr - 0x%08x, val - 0x%04x\n",
837 			(u32)&ugeth->p_rx_glbl_pram->maxd2,
838 			in_be16(&ugeth->p_rx_glbl_pram->maxd2));
839 		pr_info("ecamptr         : addr - 0x%08x, val - 0x%08x\n",
840 			(u32)&ugeth->p_rx_glbl_pram->ecamptr,
841 			in_be32(&ugeth->p_rx_glbl_pram->ecamptr));
842 		pr_info("l2qt            : addr - 0x%08x, val - 0x%08x\n",
843 			(u32)&ugeth->p_rx_glbl_pram->l2qt,
844 			in_be32(&ugeth->p_rx_glbl_pram->l2qt));
845 		pr_info("l3qt[0]         : addr - 0x%08x, val - 0x%08x\n",
846 			(u32)&ugeth->p_rx_glbl_pram->l3qt[0],
847 			in_be32(&ugeth->p_rx_glbl_pram->l3qt[0]));
848 		pr_info("l3qt[1]         : addr - 0x%08x, val - 0x%08x\n",
849 			(u32)&ugeth->p_rx_glbl_pram->l3qt[1],
850 			in_be32(&ugeth->p_rx_glbl_pram->l3qt[1]));
851 		pr_info("l3qt[2]         : addr - 0x%08x, val - 0x%08x\n",
852 			(u32)&ugeth->p_rx_glbl_pram->l3qt[2],
853 			in_be32(&ugeth->p_rx_glbl_pram->l3qt[2]));
854 		pr_info("l3qt[3]         : addr - 0x%08x, val - 0x%08x\n",
855 			(u32)&ugeth->p_rx_glbl_pram->l3qt[3],
856 			in_be32(&ugeth->p_rx_glbl_pram->l3qt[3]));
857 		pr_info("l3qt[4]         : addr - 0x%08x, val - 0x%08x\n",
858 			(u32)&ugeth->p_rx_glbl_pram->l3qt[4],
859 			in_be32(&ugeth->p_rx_glbl_pram->l3qt[4]));
860 		pr_info("l3qt[5]         : addr - 0x%08x, val - 0x%08x\n",
861 			(u32)&ugeth->p_rx_glbl_pram->l3qt[5],
862 			in_be32(&ugeth->p_rx_glbl_pram->l3qt[5]));
863 		pr_info("l3qt[6]         : addr - 0x%08x, val - 0x%08x\n",
864 			(u32)&ugeth->p_rx_glbl_pram->l3qt[6],
865 			in_be32(&ugeth->p_rx_glbl_pram->l3qt[6]));
866 		pr_info("l3qt[7]         : addr - 0x%08x, val - 0x%08x\n",
867 			(u32)&ugeth->p_rx_glbl_pram->l3qt[7],
868 			in_be32(&ugeth->p_rx_glbl_pram->l3qt[7]));
869 		pr_info("vlantype        : addr - 0x%08x, val - 0x%04x\n",
870 			(u32)&ugeth->p_rx_glbl_pram->vlantype,
871 			in_be16(&ugeth->p_rx_glbl_pram->vlantype));
872 		pr_info("vlantci         : addr - 0x%08x, val - 0x%04x\n",
873 			(u32)&ugeth->p_rx_glbl_pram->vlantci,
874 			in_be16(&ugeth->p_rx_glbl_pram->vlantci));
875 		for (i = 0; i < 64; i++)
876 			pr_info("addressfiltering[%d]: addr - 0x%08x, val - 0x%02x\n",
877 				i,
878 				(u32)&ugeth->p_rx_glbl_pram->addressfiltering[i],
879 				ugeth->p_rx_glbl_pram->addressfiltering[i]);
880 		pr_info("exfGlobalParam  : addr - 0x%08x, val - 0x%08x\n",
881 			(u32)&ugeth->p_rx_glbl_pram->exfGlobalParam,
882 			in_be32(&ugeth->p_rx_glbl_pram->exfGlobalParam));
883 	}
884 	if (ugeth->p_send_q_mem_reg) {
885 		pr_info("Send Q memory registers:\n");
886 		pr_info("Base address: 0x%08x\n", (u32)ugeth->p_send_q_mem_reg);
887 		for (i = 0; i < ucc_geth_tx_queues(ugeth->ug_info); i++) {
888 			pr_info("SQQD[%d]:\n", i);
889 			pr_info("Base address: 0x%08x\n",
890 				(u32)&ugeth->p_send_q_mem_reg->sqqd[i]);
891 			mem_disp((u8 *) & ugeth->p_send_q_mem_reg->sqqd[i],
892 				 sizeof(struct ucc_geth_send_queue_qd));
893 		}
894 	}
895 	if (ugeth->p_scheduler) {
896 		pr_info("Scheduler:\n");
897 		pr_info("Base address: 0x%08x\n", (u32)ugeth->p_scheduler);
898 		mem_disp((u8 *) ugeth->p_scheduler,
899 			 sizeof(*ugeth->p_scheduler));
900 	}
901 	if (ugeth->p_tx_fw_statistics_pram) {
902 		pr_info("TX FW statistics pram:\n");
903 		pr_info("Base address: 0x%08x\n",
904 			(u32)ugeth->p_tx_fw_statistics_pram);
905 		mem_disp((u8 *) ugeth->p_tx_fw_statistics_pram,
906 			 sizeof(*ugeth->p_tx_fw_statistics_pram));
907 	}
908 	if (ugeth->p_rx_fw_statistics_pram) {
909 		pr_info("RX FW statistics pram:\n");
910 		pr_info("Base address: 0x%08x\n",
911 			(u32)ugeth->p_rx_fw_statistics_pram);
912 		mem_disp((u8 *) ugeth->p_rx_fw_statistics_pram,
913 			 sizeof(*ugeth->p_rx_fw_statistics_pram));
914 	}
915 	if (ugeth->p_rx_irq_coalescing_tbl) {
916 		pr_info("RX IRQ coalescing tables:\n");
917 		pr_info("Base address: 0x%08x\n",
918 			(u32)ugeth->p_rx_irq_coalescing_tbl);
919 		for (i = 0; i < ucc_geth_rx_queues(ugeth->ug_info); i++) {
920 			pr_info("RX IRQ coalescing table entry[%d]:\n", i);
921 			pr_info("Base address: 0x%08x\n",
922 				(u32)&ugeth->p_rx_irq_coalescing_tbl->
923 				coalescingentry[i]);
924 			pr_info("interruptcoalescingmaxvalue: addr - 0x%08x, val - 0x%08x\n",
925 				(u32)&ugeth->p_rx_irq_coalescing_tbl->
926 				coalescingentry[i].interruptcoalescingmaxvalue,
927 				in_be32(&ugeth->p_rx_irq_coalescing_tbl->
928 					coalescingentry[i].
929 					interruptcoalescingmaxvalue));
930 			pr_info("interruptcoalescingcounter : addr - 0x%08x, val - 0x%08x\n",
931 				(u32)&ugeth->p_rx_irq_coalescing_tbl->
932 				coalescingentry[i].interruptcoalescingcounter,
933 				in_be32(&ugeth->p_rx_irq_coalescing_tbl->
934 					coalescingentry[i].
935 					interruptcoalescingcounter));
936 		}
937 	}
938 	if (ugeth->p_rx_bd_qs_tbl) {
939 		pr_info("RX BD QS tables:\n");
940 		pr_info("Base address: 0x%08x\n", (u32)ugeth->p_rx_bd_qs_tbl);
941 		for (i = 0; i < ucc_geth_rx_queues(ugeth->ug_info); i++) {
942 			pr_info("RX BD QS table[%d]:\n", i);
943 			pr_info("Base address: 0x%08x\n",
944 				(u32)&ugeth->p_rx_bd_qs_tbl[i]);
945 			pr_info("bdbaseptr        : addr - 0x%08x, val - 0x%08x\n",
946 				(u32)&ugeth->p_rx_bd_qs_tbl[i].bdbaseptr,
947 				in_be32(&ugeth->p_rx_bd_qs_tbl[i].bdbaseptr));
948 			pr_info("bdptr            : addr - 0x%08x, val - 0x%08x\n",
949 				(u32)&ugeth->p_rx_bd_qs_tbl[i].bdptr,
950 				in_be32(&ugeth->p_rx_bd_qs_tbl[i].bdptr));
951 			pr_info("externalbdbaseptr: addr - 0x%08x, val - 0x%08x\n",
952 				(u32)&ugeth->p_rx_bd_qs_tbl[i].externalbdbaseptr,
953 				in_be32(&ugeth->p_rx_bd_qs_tbl[i].
954 					externalbdbaseptr));
955 			pr_info("externalbdptr    : addr - 0x%08x, val - 0x%08x\n",
956 				(u32)&ugeth->p_rx_bd_qs_tbl[i].externalbdptr,
957 				in_be32(&ugeth->p_rx_bd_qs_tbl[i].externalbdptr));
958 			pr_info("ucode RX Prefetched BDs:\n");
959 			pr_info("Base address: 0x%08x\n",
960 				(u32)qe_muram_addr(in_be32
961 						   (&ugeth->p_rx_bd_qs_tbl[i].
962 						    bdbaseptr)));
963 			mem_disp((u8 *)
964 				 qe_muram_addr(in_be32
965 					       (&ugeth->p_rx_bd_qs_tbl[i].
966 						bdbaseptr)),
967 				 sizeof(struct ucc_geth_rx_prefetched_bds));
968 		}
969 	}
970 	if (ugeth->p_init_enet_param_shadow) {
971 		int size;
972 		pr_info("Init enet param shadow:\n");
973 		pr_info("Base address: 0x%08x\n",
974 			(u32) ugeth->p_init_enet_param_shadow);
975 		mem_disp((u8 *) ugeth->p_init_enet_param_shadow,
976 			 sizeof(*ugeth->p_init_enet_param_shadow));
977 
978 		size = sizeof(struct ucc_geth_thread_rx_pram);
979 		if (ugeth->ug_info->rxExtendedFiltering) {
980 			size +=
981 			    THREAD_RX_PRAM_ADDITIONAL_FOR_EXTENDED_FILTERING;
982 			if (ugeth->ug_info->largestexternallookupkeysize ==
983 			    QE_FLTR_TABLE_LOOKUP_KEY_SIZE_8_BYTES)
984 				size +=
985 			THREAD_RX_PRAM_ADDITIONAL_FOR_EXTENDED_FILTERING_8;
986 			if (ugeth->ug_info->largestexternallookupkeysize ==
987 			    QE_FLTR_TABLE_LOOKUP_KEY_SIZE_16_BYTES)
988 				size +=
989 			THREAD_RX_PRAM_ADDITIONAL_FOR_EXTENDED_FILTERING_16;
990 		}
991 
992 		dump_init_enet_entries(ugeth,
993 				       &(ugeth->p_init_enet_param_shadow->
994 					 txthread[0]),
995 				       ENET_INIT_PARAM_MAX_ENTRIES_TX,
996 				       sizeof(struct ucc_geth_thread_tx_pram),
997 				       ugeth->ug_info->riscTx, 0);
998 		dump_init_enet_entries(ugeth,
999 				       &(ugeth->p_init_enet_param_shadow->
1000 					 rxthread[0]),
1001 				       ENET_INIT_PARAM_MAX_ENTRIES_RX, size,
1002 				       ugeth->ug_info->riscRx, 1);
1003 	}
1004 }
1005 #endif /* DEBUG */
1006 
init_default_reg_vals(u32 __iomem * upsmr_register,u32 __iomem * maccfg1_register,u32 __iomem * maccfg2_register)1007 static void init_default_reg_vals(u32 __iomem *upsmr_register,
1008 				  u32 __iomem *maccfg1_register,
1009 				  u32 __iomem *maccfg2_register)
1010 {
1011 	out_be32(upsmr_register, UCC_GETH_UPSMR_INIT);
1012 	out_be32(maccfg1_register, UCC_GETH_MACCFG1_INIT);
1013 	out_be32(maccfg2_register, UCC_GETH_MACCFG2_INIT);
1014 }
1015 
init_half_duplex_params(int alt_beb,int back_pressure_no_backoff,int no_backoff,int excess_defer,u8 alt_beb_truncation,u8 max_retransmissions,u8 collision_window,u32 __iomem * hafdup_register)1016 static int init_half_duplex_params(int alt_beb,
1017 				   int back_pressure_no_backoff,
1018 				   int no_backoff,
1019 				   int excess_defer,
1020 				   u8 alt_beb_truncation,
1021 				   u8 max_retransmissions,
1022 				   u8 collision_window,
1023 				   u32 __iomem *hafdup_register)
1024 {
1025 	u32 value = 0;
1026 
1027 	if ((alt_beb_truncation > HALFDUP_ALT_BEB_TRUNCATION_MAX) ||
1028 	    (max_retransmissions > HALFDUP_MAX_RETRANSMISSION_MAX) ||
1029 	    (collision_window > HALFDUP_COLLISION_WINDOW_MAX))
1030 		return -EINVAL;
1031 
1032 	value = (u32) (alt_beb_truncation << HALFDUP_ALT_BEB_TRUNCATION_SHIFT);
1033 
1034 	if (alt_beb)
1035 		value |= HALFDUP_ALT_BEB;
1036 	if (back_pressure_no_backoff)
1037 		value |= HALFDUP_BACK_PRESSURE_NO_BACKOFF;
1038 	if (no_backoff)
1039 		value |= HALFDUP_NO_BACKOFF;
1040 	if (excess_defer)
1041 		value |= HALFDUP_EXCESSIVE_DEFER;
1042 
1043 	value |= (max_retransmissions << HALFDUP_MAX_RETRANSMISSION_SHIFT);
1044 
1045 	value |= collision_window;
1046 
1047 	out_be32(hafdup_register, value);
1048 	return 0;
1049 }
1050 
init_inter_frame_gap_params(u8 non_btb_cs_ipg,u8 non_btb_ipg,u8 min_ifg,u8 btb_ipg,u32 __iomem * ipgifg_register)1051 static int init_inter_frame_gap_params(u8 non_btb_cs_ipg,
1052 				       u8 non_btb_ipg,
1053 				       u8 min_ifg,
1054 				       u8 btb_ipg,
1055 				       u32 __iomem *ipgifg_register)
1056 {
1057 	u32 value = 0;
1058 
1059 	/* Non-Back-to-back IPG part 1 should be <= Non-Back-to-back
1060 	IPG part 2 */
1061 	if (non_btb_cs_ipg > non_btb_ipg)
1062 		return -EINVAL;
1063 
1064 	if ((non_btb_cs_ipg > IPGIFG_NON_BACK_TO_BACK_IFG_PART1_MAX) ||
1065 	    (non_btb_ipg > IPGIFG_NON_BACK_TO_BACK_IFG_PART2_MAX) ||
1066 	    /*(min_ifg        > IPGIFG_MINIMUM_IFG_ENFORCEMENT_MAX) || */
1067 	    (btb_ipg > IPGIFG_BACK_TO_BACK_IFG_MAX))
1068 		return -EINVAL;
1069 
1070 	value |=
1071 	    ((non_btb_cs_ipg << IPGIFG_NON_BACK_TO_BACK_IFG_PART1_SHIFT) &
1072 	     IPGIFG_NBTB_CS_IPG_MASK);
1073 	value |=
1074 	    ((non_btb_ipg << IPGIFG_NON_BACK_TO_BACK_IFG_PART2_SHIFT) &
1075 	     IPGIFG_NBTB_IPG_MASK);
1076 	value |=
1077 	    ((min_ifg << IPGIFG_MINIMUM_IFG_ENFORCEMENT_SHIFT) &
1078 	     IPGIFG_MIN_IFG_MASK);
1079 	value |= (btb_ipg & IPGIFG_BTB_IPG_MASK);
1080 
1081 	out_be32(ipgifg_register, value);
1082 	return 0;
1083 }
1084 
init_flow_control_params(u32 automatic_flow_control_mode,int rx_flow_control_enable,int tx_flow_control_enable,u16 pause_period,u16 extension_field,u32 __iomem * upsmr_register,u32 __iomem * uempr_register,u32 __iomem * maccfg1_register)1085 int init_flow_control_params(u32 automatic_flow_control_mode,
1086 				    int rx_flow_control_enable,
1087 				    int tx_flow_control_enable,
1088 				    u16 pause_period,
1089 				    u16 extension_field,
1090 				    u32 __iomem *upsmr_register,
1091 				    u32 __iomem *uempr_register,
1092 				    u32 __iomem *maccfg1_register)
1093 {
1094 	u32 value = 0;
1095 
1096 	/* Set UEMPR register */
1097 	value = (u32) pause_period << UEMPR_PAUSE_TIME_VALUE_SHIFT;
1098 	value |= (u32) extension_field << UEMPR_EXTENDED_PAUSE_TIME_VALUE_SHIFT;
1099 	out_be32(uempr_register, value);
1100 
1101 	/* Set UPSMR register */
1102 	setbits32(upsmr_register, automatic_flow_control_mode);
1103 
1104 	value = in_be32(maccfg1_register);
1105 	if (rx_flow_control_enable)
1106 		value |= MACCFG1_FLOW_RX;
1107 	if (tx_flow_control_enable)
1108 		value |= MACCFG1_FLOW_TX;
1109 	out_be32(maccfg1_register, value);
1110 
1111 	return 0;
1112 }
1113 
init_hw_statistics_gathering_mode(int enable_hardware_statistics,int auto_zero_hardware_statistics,u32 __iomem * upsmr_register,u16 __iomem * uescr_register)1114 static int init_hw_statistics_gathering_mode(int enable_hardware_statistics,
1115 					     int auto_zero_hardware_statistics,
1116 					     u32 __iomem *upsmr_register,
1117 					     u16 __iomem *uescr_register)
1118 {
1119 	u16 uescr_value = 0;
1120 
1121 	/* Enable hardware statistics gathering if requested */
1122 	if (enable_hardware_statistics)
1123 		setbits32(upsmr_register, UCC_GETH_UPSMR_HSE);
1124 
1125 	/* Clear hardware statistics counters */
1126 	uescr_value = in_be16(uescr_register);
1127 	uescr_value |= UESCR_CLRCNT;
1128 	/* Automatically zero hardware statistics counters on read,
1129 	if requested */
1130 	if (auto_zero_hardware_statistics)
1131 		uescr_value |= UESCR_AUTOZ;
1132 	out_be16(uescr_register, uescr_value);
1133 
1134 	return 0;
1135 }
1136 
init_firmware_statistics_gathering_mode(int enable_tx_firmware_statistics,int enable_rx_firmware_statistics,u32 __iomem * tx_rmon_base_ptr,u32 tx_firmware_statistics_structure_address,u32 __iomem * rx_rmon_base_ptr,u32 rx_firmware_statistics_structure_address,u16 __iomem * temoder_register,u32 __iomem * remoder_register)1137 static int init_firmware_statistics_gathering_mode(int
1138 		enable_tx_firmware_statistics,
1139 		int enable_rx_firmware_statistics,
1140 		u32 __iomem *tx_rmon_base_ptr,
1141 		u32 tx_firmware_statistics_structure_address,
1142 		u32 __iomem *rx_rmon_base_ptr,
1143 		u32 rx_firmware_statistics_structure_address,
1144 		u16 __iomem *temoder_register,
1145 		u32 __iomem *remoder_register)
1146 {
1147 	/* Note: this function does not check if */
1148 	/* the parameters it receives are NULL   */
1149 
1150 	if (enable_tx_firmware_statistics) {
1151 		out_be32(tx_rmon_base_ptr,
1152 			 tx_firmware_statistics_structure_address);
1153 		setbits16(temoder_register, TEMODER_TX_RMON_STATISTICS_ENABLE);
1154 	}
1155 
1156 	if (enable_rx_firmware_statistics) {
1157 		out_be32(rx_rmon_base_ptr,
1158 			 rx_firmware_statistics_structure_address);
1159 		setbits32(remoder_register, REMODER_RX_RMON_STATISTICS_ENABLE);
1160 	}
1161 
1162 	return 0;
1163 }
1164 
init_mac_station_addr_regs(u8 address_byte_0,u8 address_byte_1,u8 address_byte_2,u8 address_byte_3,u8 address_byte_4,u8 address_byte_5,u32 __iomem * macstnaddr1_register,u32 __iomem * macstnaddr2_register)1165 static int init_mac_station_addr_regs(u8 address_byte_0,
1166 				      u8 address_byte_1,
1167 				      u8 address_byte_2,
1168 				      u8 address_byte_3,
1169 				      u8 address_byte_4,
1170 				      u8 address_byte_5,
1171 				      u32 __iomem *macstnaddr1_register,
1172 				      u32 __iomem *macstnaddr2_register)
1173 {
1174 	u32 value = 0;
1175 
1176 	/* Example: for a station address of 0x12345678ABCD, */
1177 	/* 0x12 is byte 0, 0x34 is byte 1 and so on and 0xCD is byte 5 */
1178 
1179 	/* MACSTNADDR1 Register: */
1180 
1181 	/* 0                      7   8                      15  */
1182 	/* station address byte 5     station address byte 4     */
1183 	/* 16                     23  24                     31  */
1184 	/* station address byte 3     station address byte 2     */
1185 	value |= (u32) ((address_byte_2 << 0) & 0x000000FF);
1186 	value |= (u32) ((address_byte_3 << 8) & 0x0000FF00);
1187 	value |= (u32) ((address_byte_4 << 16) & 0x00FF0000);
1188 	value |= (u32) ((address_byte_5 << 24) & 0xFF000000);
1189 
1190 	out_be32(macstnaddr1_register, value);
1191 
1192 	/* MACSTNADDR2 Register: */
1193 
1194 	/* 0                      7   8                      15  */
1195 	/* station address byte 1     station address byte 0     */
1196 	/* 16                     23  24                     31  */
1197 	/*         reserved                   reserved           */
1198 	value = 0;
1199 	value |= (u32) ((address_byte_0 << 16) & 0x00FF0000);
1200 	value |= (u32) ((address_byte_1 << 24) & 0xFF000000);
1201 
1202 	out_be32(macstnaddr2_register, value);
1203 
1204 	return 0;
1205 }
1206 
init_check_frame_length_mode(int length_check,u32 __iomem * maccfg2_register)1207 static int init_check_frame_length_mode(int length_check,
1208 					u32 __iomem *maccfg2_register)
1209 {
1210 	u32 value = 0;
1211 
1212 	value = in_be32(maccfg2_register);
1213 
1214 	if (length_check)
1215 		value |= MACCFG2_LC;
1216 	else
1217 		value &= ~MACCFG2_LC;
1218 
1219 	out_be32(maccfg2_register, value);
1220 	return 0;
1221 }
1222 
init_preamble_length(u8 preamble_length,u32 __iomem * maccfg2_register)1223 static int init_preamble_length(u8 preamble_length,
1224 				u32 __iomem *maccfg2_register)
1225 {
1226 	if ((preamble_length < 3) || (preamble_length > 7))
1227 		return -EINVAL;
1228 
1229 	clrsetbits_be32(maccfg2_register, MACCFG2_PREL_MASK,
1230 			preamble_length << MACCFG2_PREL_SHIFT);
1231 
1232 	return 0;
1233 }
1234 
init_rx_parameters(int reject_broadcast,int receive_short_frames,int promiscuous,u32 __iomem * upsmr_register)1235 static int init_rx_parameters(int reject_broadcast,
1236 			      int receive_short_frames,
1237 			      int promiscuous, u32 __iomem *upsmr_register)
1238 {
1239 	u32 value = 0;
1240 
1241 	value = in_be32(upsmr_register);
1242 
1243 	if (reject_broadcast)
1244 		value |= UCC_GETH_UPSMR_BRO;
1245 	else
1246 		value &= ~UCC_GETH_UPSMR_BRO;
1247 
1248 	if (receive_short_frames)
1249 		value |= UCC_GETH_UPSMR_RSH;
1250 	else
1251 		value &= ~UCC_GETH_UPSMR_RSH;
1252 
1253 	if (promiscuous)
1254 		value |= UCC_GETH_UPSMR_PRO;
1255 	else
1256 		value &= ~UCC_GETH_UPSMR_PRO;
1257 
1258 	out_be32(upsmr_register, value);
1259 
1260 	return 0;
1261 }
1262 
init_max_rx_buff_len(u16 max_rx_buf_len,u16 __iomem * mrblr_register)1263 static int init_max_rx_buff_len(u16 max_rx_buf_len,
1264 				u16 __iomem *mrblr_register)
1265 {
1266 	/* max_rx_buf_len value must be a multiple of 128 */
1267 	if ((max_rx_buf_len == 0) ||
1268 	    (max_rx_buf_len % UCC_GETH_MRBLR_ALIGNMENT))
1269 		return -EINVAL;
1270 
1271 	out_be16(mrblr_register, max_rx_buf_len);
1272 	return 0;
1273 }
1274 
init_min_frame_len(u16 min_frame_length,u16 __iomem * minflr_register,u16 __iomem * mrblr_register)1275 static int init_min_frame_len(u16 min_frame_length,
1276 			      u16 __iomem *minflr_register,
1277 			      u16 __iomem *mrblr_register)
1278 {
1279 	u16 mrblr_value = 0;
1280 
1281 	mrblr_value = in_be16(mrblr_register);
1282 	if (min_frame_length >= (mrblr_value - 4))
1283 		return -EINVAL;
1284 
1285 	out_be16(minflr_register, min_frame_length);
1286 	return 0;
1287 }
1288 
adjust_enet_interface(struct ucc_geth_private * ugeth)1289 static int adjust_enet_interface(struct ucc_geth_private *ugeth)
1290 {
1291 	struct ucc_geth_info *ug_info;
1292 	struct ucc_geth __iomem *ug_regs;
1293 	struct ucc_fast __iomem *uf_regs;
1294 	int ret_val;
1295 	u32 upsmr, maccfg2;
1296 	u16 value;
1297 
1298 	ugeth_vdbg("%s: IN", __func__);
1299 
1300 	ug_info = ugeth->ug_info;
1301 	ug_regs = ugeth->ug_regs;
1302 	uf_regs = ugeth->uccf->uf_regs;
1303 
1304 	/*                    Set MACCFG2                    */
1305 	maccfg2 = in_be32(&ug_regs->maccfg2);
1306 	maccfg2 &= ~MACCFG2_INTERFACE_MODE_MASK;
1307 	if ((ugeth->max_speed == SPEED_10) ||
1308 	    (ugeth->max_speed == SPEED_100))
1309 		maccfg2 |= MACCFG2_INTERFACE_MODE_NIBBLE;
1310 	else if (ugeth->max_speed == SPEED_1000)
1311 		maccfg2 |= MACCFG2_INTERFACE_MODE_BYTE;
1312 	maccfg2 |= ug_info->padAndCrc;
1313 	out_be32(&ug_regs->maccfg2, maccfg2);
1314 
1315 	/*                    Set UPSMR                      */
1316 	upsmr = in_be32(&uf_regs->upsmr);
1317 	upsmr &= ~(UCC_GETH_UPSMR_RPM | UCC_GETH_UPSMR_R10M |
1318 		   UCC_GETH_UPSMR_TBIM | UCC_GETH_UPSMR_RMM);
1319 	if ((ugeth->phy_interface == PHY_INTERFACE_MODE_RMII) ||
1320 	    (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII) ||
1321 	    (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_ID) ||
1322 	    (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
1323 	    (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) ||
1324 	    (ugeth->phy_interface == PHY_INTERFACE_MODE_RTBI)) {
1325 		if (ugeth->phy_interface != PHY_INTERFACE_MODE_RMII)
1326 			upsmr |= UCC_GETH_UPSMR_RPM;
1327 		switch (ugeth->max_speed) {
1328 		case SPEED_10:
1329 			upsmr |= UCC_GETH_UPSMR_R10M;
1330 			fallthrough;
1331 		case SPEED_100:
1332 			if (ugeth->phy_interface != PHY_INTERFACE_MODE_RTBI)
1333 				upsmr |= UCC_GETH_UPSMR_RMM;
1334 		}
1335 	}
1336 	if ((ugeth->phy_interface == PHY_INTERFACE_MODE_TBI) ||
1337 	    (ugeth->phy_interface == PHY_INTERFACE_MODE_RTBI)) {
1338 		upsmr |= UCC_GETH_UPSMR_TBIM;
1339 	}
1340 	if (ugeth->phy_interface == PHY_INTERFACE_MODE_SGMII)
1341 		upsmr |= UCC_GETH_UPSMR_SGMM;
1342 
1343 	out_be32(&uf_regs->upsmr, upsmr);
1344 
1345 	/* Disable autonegotiation in tbi mode, because by default it
1346 	comes up in autonegotiation mode. */
1347 	/* Note that this depends on proper setting in utbipar register. */
1348 	if ((ugeth->phy_interface == PHY_INTERFACE_MODE_TBI) ||
1349 	    (ugeth->phy_interface == PHY_INTERFACE_MODE_RTBI)) {
1350 		struct ucc_geth_info *ug_info = ugeth->ug_info;
1351 		struct phy_device *tbiphy;
1352 
1353 		if (!ug_info->tbi_node)
1354 			pr_warn("TBI mode requires that the device tree specify a tbi-handle\n");
1355 
1356 		tbiphy = of_phy_find_device(ug_info->tbi_node);
1357 		if (!tbiphy)
1358 			pr_warn("Could not get TBI device\n");
1359 
1360 		value = phy_read(tbiphy, ENET_TBI_MII_CR);
1361 		value &= ~0x1000;	/* Turn off autonegotiation */
1362 		phy_write(tbiphy, ENET_TBI_MII_CR, value);
1363 
1364 		put_device(&tbiphy->mdio.dev);
1365 	}
1366 
1367 	init_check_frame_length_mode(ug_info->lengthCheckRx, &ug_regs->maccfg2);
1368 
1369 	ret_val = init_preamble_length(ug_info->prel, &ug_regs->maccfg2);
1370 	if (ret_val != 0) {
1371 		if (netif_msg_probe(ugeth))
1372 			pr_err("Preamble length must be between 3 and 7 inclusive\n");
1373 		return ret_val;
1374 	}
1375 
1376 	return 0;
1377 }
1378 
ugeth_graceful_stop_tx(struct ucc_geth_private * ugeth)1379 static int ugeth_graceful_stop_tx(struct ucc_geth_private *ugeth)
1380 {
1381 	struct ucc_fast_private *uccf;
1382 	u32 cecr_subblock;
1383 	u32 temp;
1384 	int i = 10;
1385 
1386 	uccf = ugeth->uccf;
1387 
1388 	/* Mask GRACEFUL STOP TX interrupt bit and clear it */
1389 	clrbits32(uccf->p_uccm, UCC_GETH_UCCE_GRA);
1390 	out_be32(uccf->p_ucce, UCC_GETH_UCCE_GRA);  /* clear by writing 1 */
1391 
1392 	/* Issue host command */
1393 	cecr_subblock =
1394 	    ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1395 	qe_issue_cmd(QE_GRACEFUL_STOP_TX, cecr_subblock,
1396 		     QE_CR_PROTOCOL_ETHERNET, 0);
1397 
1398 	/* Wait for command to complete */
1399 	do {
1400 		msleep(10);
1401 		temp = in_be32(uccf->p_ucce);
1402 	} while (!(temp & UCC_GETH_UCCE_GRA) && --i);
1403 
1404 	uccf->stopped_tx = 1;
1405 
1406 	return 0;
1407 }
1408 
ugeth_graceful_stop_rx(struct ucc_geth_private * ugeth)1409 static int ugeth_graceful_stop_rx(struct ucc_geth_private *ugeth)
1410 {
1411 	struct ucc_fast_private *uccf;
1412 	u32 cecr_subblock;
1413 	u8 temp;
1414 	int i = 10;
1415 
1416 	uccf = ugeth->uccf;
1417 
1418 	/* Clear acknowledge bit */
1419 	temp = in_8(&ugeth->p_rx_glbl_pram->rxgstpack);
1420 	temp &= ~GRACEFUL_STOP_ACKNOWLEDGE_RX;
1421 	out_8(&ugeth->p_rx_glbl_pram->rxgstpack, temp);
1422 
1423 	/* Keep issuing command and checking acknowledge bit until
1424 	it is asserted, according to spec */
1425 	do {
1426 		/* Issue host command */
1427 		cecr_subblock =
1428 		    ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.
1429 						ucc_num);
1430 		qe_issue_cmd(QE_GRACEFUL_STOP_RX, cecr_subblock,
1431 			     QE_CR_PROTOCOL_ETHERNET, 0);
1432 		msleep(10);
1433 		temp = in_8(&ugeth->p_rx_glbl_pram->rxgstpack);
1434 	} while (!(temp & GRACEFUL_STOP_ACKNOWLEDGE_RX) && --i);
1435 
1436 	uccf->stopped_rx = 1;
1437 
1438 	return 0;
1439 }
1440 
ugeth_restart_tx(struct ucc_geth_private * ugeth)1441 static int ugeth_restart_tx(struct ucc_geth_private *ugeth)
1442 {
1443 	struct ucc_fast_private *uccf;
1444 	u32 cecr_subblock;
1445 
1446 	uccf = ugeth->uccf;
1447 
1448 	cecr_subblock =
1449 	    ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1450 	qe_issue_cmd(QE_RESTART_TX, cecr_subblock, QE_CR_PROTOCOL_ETHERNET, 0);
1451 	uccf->stopped_tx = 0;
1452 
1453 	return 0;
1454 }
1455 
ugeth_restart_rx(struct ucc_geth_private * ugeth)1456 static int ugeth_restart_rx(struct ucc_geth_private *ugeth)
1457 {
1458 	struct ucc_fast_private *uccf;
1459 	u32 cecr_subblock;
1460 
1461 	uccf = ugeth->uccf;
1462 
1463 	cecr_subblock =
1464 	    ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
1465 	qe_issue_cmd(QE_RESTART_RX, cecr_subblock, QE_CR_PROTOCOL_ETHERNET,
1466 		     0);
1467 	uccf->stopped_rx = 0;
1468 
1469 	return 0;
1470 }
1471 
ugeth_enable(struct ucc_geth_private * ugeth,enum comm_dir mode)1472 static int ugeth_enable(struct ucc_geth_private *ugeth, enum comm_dir mode)
1473 {
1474 	struct ucc_fast_private *uccf;
1475 	int enabled_tx, enabled_rx;
1476 
1477 	uccf = ugeth->uccf;
1478 
1479 	/* check if the UCC number is in range. */
1480 	if (ugeth->ug_info->uf_info.ucc_num >= UCC_MAX_NUM) {
1481 		if (netif_msg_probe(ugeth))
1482 			pr_err("ucc_num out of range\n");
1483 		return -EINVAL;
1484 	}
1485 
1486 	enabled_tx = uccf->enabled_tx;
1487 	enabled_rx = uccf->enabled_rx;
1488 
1489 	/* Get Tx and Rx going again, in case this channel was actively
1490 	disabled. */
1491 	if ((mode & COMM_DIR_TX) && (!enabled_tx) && uccf->stopped_tx)
1492 		ugeth_restart_tx(ugeth);
1493 	if ((mode & COMM_DIR_RX) && (!enabled_rx) && uccf->stopped_rx)
1494 		ugeth_restart_rx(ugeth);
1495 
1496 	ucc_fast_enable(uccf, mode);	/* OK to do even if not disabled */
1497 
1498 	return 0;
1499 
1500 }
1501 
ugeth_disable(struct ucc_geth_private * ugeth,enum comm_dir mode)1502 static int ugeth_disable(struct ucc_geth_private *ugeth, enum comm_dir mode)
1503 {
1504 	struct ucc_fast_private *uccf;
1505 
1506 	uccf = ugeth->uccf;
1507 
1508 	/* check if the UCC number is in range. */
1509 	if (ugeth->ug_info->uf_info.ucc_num >= UCC_MAX_NUM) {
1510 		if (netif_msg_probe(ugeth))
1511 			pr_err("ucc_num out of range\n");
1512 		return -EINVAL;
1513 	}
1514 
1515 	/* Stop any transmissions */
1516 	if ((mode & COMM_DIR_TX) && uccf->enabled_tx && !uccf->stopped_tx)
1517 		ugeth_graceful_stop_tx(ugeth);
1518 
1519 	/* Stop any receptions */
1520 	if ((mode & COMM_DIR_RX) && uccf->enabled_rx && !uccf->stopped_rx)
1521 		ugeth_graceful_stop_rx(ugeth);
1522 
1523 	ucc_fast_disable(ugeth->uccf, mode); /* OK to do even if not enabled */
1524 
1525 	return 0;
1526 }
1527 
ugeth_quiesce(struct ucc_geth_private * ugeth)1528 static void ugeth_quiesce(struct ucc_geth_private *ugeth)
1529 {
1530 	/* Prevent any further xmits */
1531 	netif_tx_stop_all_queues(ugeth->ndev);
1532 
1533 	/* Disable the interrupt to avoid NAPI rescheduling. */
1534 	disable_irq(ugeth->ug_info->uf_info.irq);
1535 
1536 	/* Stop NAPI, and possibly wait for its completion. */
1537 	napi_disable(&ugeth->napi);
1538 }
1539 
ugeth_activate(struct ucc_geth_private * ugeth)1540 static void ugeth_activate(struct ucc_geth_private *ugeth)
1541 {
1542 	napi_enable(&ugeth->napi);
1543 	enable_irq(ugeth->ug_info->uf_info.irq);
1544 
1545 	/* allow to xmit again  */
1546 	netif_tx_wake_all_queues(ugeth->ndev);
1547 	__netdev_watchdog_up(ugeth->ndev);
1548 }
1549 
1550 /* Called every time the controller might need to be made
1551  * aware of new link state.  The PHY code conveys this
1552  * information through variables in the ugeth structure, and this
1553  * function converts those variables into the appropriate
1554  * register values, and can bring down the device if needed.
1555  */
1556 
adjust_link(struct net_device * dev)1557 static void adjust_link(struct net_device *dev)
1558 {
1559 	struct ucc_geth_private *ugeth = netdev_priv(dev);
1560 	struct ucc_geth __iomem *ug_regs;
1561 	struct ucc_fast __iomem *uf_regs;
1562 	struct phy_device *phydev = ugeth->phydev;
1563 	int new_state = 0;
1564 
1565 	ug_regs = ugeth->ug_regs;
1566 	uf_regs = ugeth->uccf->uf_regs;
1567 
1568 	if (phydev->link) {
1569 		u32 tempval = in_be32(&ug_regs->maccfg2);
1570 		u32 upsmr = in_be32(&uf_regs->upsmr);
1571 		/* Now we make sure that we can be in full duplex mode.
1572 		 * If not, we operate in half-duplex mode. */
1573 		if (phydev->duplex != ugeth->oldduplex) {
1574 			new_state = 1;
1575 			if (!(phydev->duplex))
1576 				tempval &= ~(MACCFG2_FDX);
1577 			else
1578 				tempval |= MACCFG2_FDX;
1579 			ugeth->oldduplex = phydev->duplex;
1580 		}
1581 
1582 		if (phydev->speed != ugeth->oldspeed) {
1583 			new_state = 1;
1584 			switch (phydev->speed) {
1585 			case SPEED_1000:
1586 				tempval = ((tempval &
1587 					    ~(MACCFG2_INTERFACE_MODE_MASK)) |
1588 					    MACCFG2_INTERFACE_MODE_BYTE);
1589 				break;
1590 			case SPEED_100:
1591 			case SPEED_10:
1592 				tempval = ((tempval &
1593 					    ~(MACCFG2_INTERFACE_MODE_MASK)) |
1594 					    MACCFG2_INTERFACE_MODE_NIBBLE);
1595 				/* if reduced mode, re-set UPSMR.R10M */
1596 				if ((ugeth->phy_interface == PHY_INTERFACE_MODE_RMII) ||
1597 				    (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII) ||
1598 				    (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_ID) ||
1599 				    (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID) ||
1600 				    (ugeth->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) ||
1601 				    (ugeth->phy_interface == PHY_INTERFACE_MODE_RTBI)) {
1602 					if (phydev->speed == SPEED_10)
1603 						upsmr |= UCC_GETH_UPSMR_R10M;
1604 					else
1605 						upsmr &= ~UCC_GETH_UPSMR_R10M;
1606 				}
1607 				break;
1608 			default:
1609 				if (netif_msg_link(ugeth))
1610 					pr_warn(
1611 						"%s: Ack!  Speed (%d) is not 10/100/1000!",
1612 						dev->name, phydev->speed);
1613 				break;
1614 			}
1615 			ugeth->oldspeed = phydev->speed;
1616 		}
1617 
1618 		if (!ugeth->oldlink) {
1619 			new_state = 1;
1620 			ugeth->oldlink = 1;
1621 		}
1622 
1623 		if (new_state) {
1624 			/*
1625 			 * To change the MAC configuration we need to disable
1626 			 * the controller. To do so, we have to either grab
1627 			 * ugeth->lock, which is a bad idea since 'graceful
1628 			 * stop' commands might take quite a while, or we can
1629 			 * quiesce driver's activity.
1630 			 */
1631 			ugeth_quiesce(ugeth);
1632 			ugeth_disable(ugeth, COMM_DIR_RX_AND_TX);
1633 
1634 			out_be32(&ug_regs->maccfg2, tempval);
1635 			out_be32(&uf_regs->upsmr, upsmr);
1636 
1637 			ugeth_enable(ugeth, COMM_DIR_RX_AND_TX);
1638 			ugeth_activate(ugeth);
1639 		}
1640 	} else if (ugeth->oldlink) {
1641 			new_state = 1;
1642 			ugeth->oldlink = 0;
1643 			ugeth->oldspeed = 0;
1644 			ugeth->oldduplex = -1;
1645 	}
1646 
1647 	if (new_state && netif_msg_link(ugeth))
1648 		phy_print_status(phydev);
1649 }
1650 
1651 /* Initialize TBI PHY interface for communicating with the
1652  * SERDES lynx PHY on the chip.  We communicate with this PHY
1653  * through the MDIO bus on each controller, treating it as a
1654  * "normal" PHY at the address found in the UTBIPA register.  We assume
1655  * that the UTBIPA register is valid.  Either the MDIO bus code will set
1656  * it to a value that doesn't conflict with other PHYs on the bus, or the
1657  * value doesn't matter, as there are no other PHYs on the bus.
1658  */
uec_configure_serdes(struct net_device * dev)1659 static void uec_configure_serdes(struct net_device *dev)
1660 {
1661 	struct ucc_geth_private *ugeth = netdev_priv(dev);
1662 	struct ucc_geth_info *ug_info = ugeth->ug_info;
1663 	struct phy_device *tbiphy;
1664 
1665 	if (!ug_info->tbi_node) {
1666 		dev_warn(&dev->dev, "SGMII mode requires that the device "
1667 			"tree specify a tbi-handle\n");
1668 		return;
1669 	}
1670 
1671 	tbiphy = of_phy_find_device(ug_info->tbi_node);
1672 	if (!tbiphy) {
1673 		dev_err(&dev->dev, "error: Could not get TBI device\n");
1674 		return;
1675 	}
1676 
1677 	/*
1678 	 * If the link is already up, we must already be ok, and don't need to
1679 	 * configure and reset the TBI<->SerDes link.  Maybe U-Boot configured
1680 	 * everything for us?  Resetting it takes the link down and requires
1681 	 * several seconds for it to come back.
1682 	 */
1683 	if (phy_read(tbiphy, ENET_TBI_MII_SR) & TBISR_LSTATUS) {
1684 		put_device(&tbiphy->mdio.dev);
1685 		return;
1686 	}
1687 
1688 	/* Single clk mode, mii mode off(for serdes communication) */
1689 	phy_write(tbiphy, ENET_TBI_MII_ANA, TBIANA_SETTINGS);
1690 
1691 	phy_write(tbiphy, ENET_TBI_MII_TBICON, TBICON_CLK_SELECT);
1692 
1693 	phy_write(tbiphy, ENET_TBI_MII_CR, TBICR_SETTINGS);
1694 
1695 	put_device(&tbiphy->mdio.dev);
1696 }
1697 
1698 /* Configure the PHY for dev.
1699  * returns 0 if success.  -1 if failure
1700  */
init_phy(struct net_device * dev)1701 static int init_phy(struct net_device *dev)
1702 {
1703 	struct ucc_geth_private *priv = netdev_priv(dev);
1704 	struct ucc_geth_info *ug_info = priv->ug_info;
1705 	struct phy_device *phydev;
1706 
1707 	priv->oldlink = 0;
1708 	priv->oldspeed = 0;
1709 	priv->oldduplex = -1;
1710 
1711 	phydev = of_phy_connect(dev, ug_info->phy_node, &adjust_link, 0,
1712 				priv->phy_interface);
1713 	if (!phydev) {
1714 		dev_err(&dev->dev, "Could not attach to PHY\n");
1715 		return -ENODEV;
1716 	}
1717 
1718 	if (priv->phy_interface == PHY_INTERFACE_MODE_SGMII)
1719 		uec_configure_serdes(dev);
1720 
1721 	phy_set_max_speed(phydev, priv->max_speed);
1722 
1723 	priv->phydev = phydev;
1724 
1725 	return 0;
1726 }
1727 
ugeth_dump_regs(struct ucc_geth_private * ugeth)1728 static void ugeth_dump_regs(struct ucc_geth_private *ugeth)
1729 {
1730 #ifdef DEBUG
1731 	ucc_fast_dump_regs(ugeth->uccf);
1732 	dump_regs(ugeth);
1733 	dump_bds(ugeth);
1734 #endif
1735 }
1736 
ugeth_82xx_filtering_clear_all_addr_in_hash(struct ucc_geth_private * ugeth,enum enet_addr_type enet_addr_type)1737 static int ugeth_82xx_filtering_clear_all_addr_in_hash(struct ucc_geth_private *
1738 						       ugeth,
1739 						       enum enet_addr_type
1740 						       enet_addr_type)
1741 {
1742 	struct ucc_geth_82xx_address_filtering_pram __iomem *p_82xx_addr_filt;
1743 	struct ucc_fast_private *uccf;
1744 	enum comm_dir comm_dir;
1745 	struct list_head *p_lh;
1746 	u16 i, num;
1747 	u32 __iomem *addr_h;
1748 	u32 __iomem *addr_l;
1749 	u8 *p_counter;
1750 
1751 	uccf = ugeth->uccf;
1752 
1753 	p_82xx_addr_filt =
1754 	    (struct ucc_geth_82xx_address_filtering_pram __iomem *)
1755 	    ugeth->p_rx_glbl_pram->addressfiltering;
1756 
1757 	if (enet_addr_type == ENET_ADDR_TYPE_GROUP) {
1758 		addr_h = &(p_82xx_addr_filt->gaddr_h);
1759 		addr_l = &(p_82xx_addr_filt->gaddr_l);
1760 		p_lh = &ugeth->group_hash_q;
1761 		p_counter = &(ugeth->numGroupAddrInHash);
1762 	} else if (enet_addr_type == ENET_ADDR_TYPE_INDIVIDUAL) {
1763 		addr_h = &(p_82xx_addr_filt->iaddr_h);
1764 		addr_l = &(p_82xx_addr_filt->iaddr_l);
1765 		p_lh = &ugeth->ind_hash_q;
1766 		p_counter = &(ugeth->numIndAddrInHash);
1767 	} else
1768 		return -EINVAL;
1769 
1770 	comm_dir = 0;
1771 	if (uccf->enabled_tx)
1772 		comm_dir |= COMM_DIR_TX;
1773 	if (uccf->enabled_rx)
1774 		comm_dir |= COMM_DIR_RX;
1775 	if (comm_dir)
1776 		ugeth_disable(ugeth, comm_dir);
1777 
1778 	/* Clear the hash table. */
1779 	out_be32(addr_h, 0x00000000);
1780 	out_be32(addr_l, 0x00000000);
1781 
1782 	if (!p_lh)
1783 		return 0;
1784 
1785 	num = *p_counter;
1786 
1787 	/* Delete all remaining CQ elements */
1788 	for (i = 0; i < num; i++)
1789 		put_enet_addr_container(ENET_ADDR_CONT_ENTRY(dequeue(p_lh)));
1790 
1791 	*p_counter = 0;
1792 
1793 	if (comm_dir)
1794 		ugeth_enable(ugeth, comm_dir);
1795 
1796 	return 0;
1797 }
1798 
ugeth_82xx_filtering_clear_addr_in_paddr(struct ucc_geth_private * ugeth,u8 paddr_num)1799 static int ugeth_82xx_filtering_clear_addr_in_paddr(struct ucc_geth_private *ugeth,
1800 						    u8 paddr_num)
1801 {
1802 	ugeth->indAddrRegUsed[paddr_num] = 0; /* mark this paddr as not used */
1803 	return hw_clear_addr_in_paddr(ugeth, paddr_num);/* clear in hardware */
1804 }
1805 
ucc_geth_free_rx(struct ucc_geth_private * ugeth)1806 static void ucc_geth_free_rx(struct ucc_geth_private *ugeth)
1807 {
1808 	struct ucc_geth_info *ug_info;
1809 	struct ucc_fast_info *uf_info;
1810 	u16 i, j;
1811 	u8 __iomem *bd;
1812 
1813 
1814 	ug_info = ugeth->ug_info;
1815 	uf_info = &ug_info->uf_info;
1816 
1817 	for (i = 0; i < ucc_geth_rx_queues(ugeth->ug_info); i++) {
1818 		if (ugeth->p_rx_bd_ring[i]) {
1819 			/* Return existing data buffers in ring */
1820 			bd = ugeth->p_rx_bd_ring[i];
1821 			for (j = 0; j < ugeth->ug_info->bdRingLenRx[i]; j++) {
1822 				if (ugeth->rx_skbuff[i][j]) {
1823 					dma_unmap_single(ugeth->dev,
1824 						in_be32(&((struct qe_bd __iomem *)bd)->buf),
1825 						ugeth->ug_info->
1826 						uf_info.max_rx_buf_length +
1827 						UCC_GETH_RX_DATA_BUF_ALIGNMENT,
1828 						DMA_FROM_DEVICE);
1829 					dev_kfree_skb_any(
1830 						ugeth->rx_skbuff[i][j]);
1831 					ugeth->rx_skbuff[i][j] = NULL;
1832 				}
1833 				bd += sizeof(struct qe_bd);
1834 			}
1835 
1836 			kfree(ugeth->rx_skbuff[i]);
1837 
1838 			kfree(ugeth->p_rx_bd_ring[i]);
1839 			ugeth->p_rx_bd_ring[i] = NULL;
1840 		}
1841 	}
1842 
1843 }
1844 
ucc_geth_free_tx(struct ucc_geth_private * ugeth)1845 static void ucc_geth_free_tx(struct ucc_geth_private *ugeth)
1846 {
1847 	struct ucc_geth_info *ug_info;
1848 	struct ucc_fast_info *uf_info;
1849 	u16 i, j;
1850 	u8 __iomem *bd;
1851 
1852 	netdev_reset_queue(ugeth->ndev);
1853 
1854 	ug_info = ugeth->ug_info;
1855 	uf_info = &ug_info->uf_info;
1856 
1857 	for (i = 0; i < ucc_geth_tx_queues(ugeth->ug_info); i++) {
1858 		bd = ugeth->p_tx_bd_ring[i];
1859 		if (!bd)
1860 			continue;
1861 		for (j = 0; j < ugeth->ug_info->bdRingLenTx[i]; j++) {
1862 			if (ugeth->tx_skbuff[i][j]) {
1863 				dma_unmap_single(ugeth->dev,
1864 						 in_be32(&((struct qe_bd __iomem *)bd)->buf),
1865 						 (in_be32((u32 __iomem *)bd) &
1866 						  BD_LENGTH_MASK),
1867 						 DMA_TO_DEVICE);
1868 				dev_kfree_skb_any(ugeth->tx_skbuff[i][j]);
1869 				ugeth->tx_skbuff[i][j] = NULL;
1870 			}
1871 		}
1872 
1873 		kfree(ugeth->tx_skbuff[i]);
1874 
1875 		kfree(ugeth->p_tx_bd_ring[i]);
1876 		ugeth->p_tx_bd_ring[i] = NULL;
1877 	}
1878 
1879 }
1880 
ucc_geth_memclean(struct ucc_geth_private * ugeth)1881 static void ucc_geth_memclean(struct ucc_geth_private *ugeth)
1882 {
1883 	if (!ugeth)
1884 		return;
1885 
1886 	if (ugeth->uccf) {
1887 		ucc_fast_free(ugeth->uccf);
1888 		ugeth->uccf = NULL;
1889 	}
1890 
1891 	qe_muram_free_addr(ugeth->p_thread_data_tx);
1892 	ugeth->p_thread_data_tx = NULL;
1893 
1894 	qe_muram_free_addr(ugeth->p_thread_data_rx);
1895 	ugeth->p_thread_data_rx = NULL;
1896 
1897 	qe_muram_free_addr(ugeth->p_exf_glbl_param);
1898 	ugeth->p_exf_glbl_param = NULL;
1899 
1900 	qe_muram_free_addr(ugeth->p_rx_glbl_pram);
1901 	ugeth->p_rx_glbl_pram = NULL;
1902 
1903 	qe_muram_free_addr(ugeth->p_tx_glbl_pram);
1904 	ugeth->p_tx_glbl_pram = NULL;
1905 
1906 	qe_muram_free_addr(ugeth->p_send_q_mem_reg);
1907 	ugeth->p_send_q_mem_reg = NULL;
1908 
1909 	qe_muram_free_addr(ugeth->p_scheduler);
1910 	ugeth->p_scheduler = NULL;
1911 
1912 	qe_muram_free_addr(ugeth->p_tx_fw_statistics_pram);
1913 	ugeth->p_tx_fw_statistics_pram = NULL;
1914 
1915 	qe_muram_free_addr(ugeth->p_rx_fw_statistics_pram);
1916 	ugeth->p_rx_fw_statistics_pram = NULL;
1917 
1918 	qe_muram_free_addr(ugeth->p_rx_irq_coalescing_tbl);
1919 	ugeth->p_rx_irq_coalescing_tbl = NULL;
1920 
1921 	qe_muram_free_addr(ugeth->p_rx_bd_qs_tbl);
1922 	ugeth->p_rx_bd_qs_tbl = NULL;
1923 
1924 	if (ugeth->p_init_enet_param_shadow) {
1925 		return_init_enet_entries(ugeth,
1926 					 &(ugeth->p_init_enet_param_shadow->
1927 					   rxthread[0]),
1928 					 ENET_INIT_PARAM_MAX_ENTRIES_RX,
1929 					 ugeth->ug_info->riscRx, 1);
1930 		return_init_enet_entries(ugeth,
1931 					 &(ugeth->p_init_enet_param_shadow->
1932 					   txthread[0]),
1933 					 ENET_INIT_PARAM_MAX_ENTRIES_TX,
1934 					 ugeth->ug_info->riscTx, 0);
1935 		kfree(ugeth->p_init_enet_param_shadow);
1936 		ugeth->p_init_enet_param_shadow = NULL;
1937 	}
1938 	ucc_geth_free_tx(ugeth);
1939 	ucc_geth_free_rx(ugeth);
1940 	while (!list_empty(&ugeth->group_hash_q))
1941 		put_enet_addr_container(ENET_ADDR_CONT_ENTRY
1942 					(dequeue(&ugeth->group_hash_q)));
1943 	while (!list_empty(&ugeth->ind_hash_q))
1944 		put_enet_addr_container(ENET_ADDR_CONT_ENTRY
1945 					(dequeue(&ugeth->ind_hash_q)));
1946 	if (ugeth->ug_regs) {
1947 		iounmap(ugeth->ug_regs);
1948 		ugeth->ug_regs = NULL;
1949 	}
1950 }
1951 
ucc_geth_set_multi(struct net_device * dev)1952 static void ucc_geth_set_multi(struct net_device *dev)
1953 {
1954 	struct ucc_geth_private *ugeth;
1955 	struct netdev_hw_addr *ha;
1956 	struct ucc_fast __iomem *uf_regs;
1957 	struct ucc_geth_82xx_address_filtering_pram __iomem *p_82xx_addr_filt;
1958 
1959 	ugeth = netdev_priv(dev);
1960 
1961 	uf_regs = ugeth->uccf->uf_regs;
1962 
1963 	if (dev->flags & IFF_PROMISC) {
1964 		setbits32(&uf_regs->upsmr, UCC_GETH_UPSMR_PRO);
1965 	} else {
1966 		clrbits32(&uf_regs->upsmr, UCC_GETH_UPSMR_PRO);
1967 
1968 		p_82xx_addr_filt =
1969 		    (struct ucc_geth_82xx_address_filtering_pram __iomem *) ugeth->
1970 		    p_rx_glbl_pram->addressfiltering;
1971 
1972 		if (dev->flags & IFF_ALLMULTI) {
1973 			/* Catch all multicast addresses, so set the
1974 			 * filter to all 1's.
1975 			 */
1976 			out_be32(&p_82xx_addr_filt->gaddr_h, 0xffffffff);
1977 			out_be32(&p_82xx_addr_filt->gaddr_l, 0xffffffff);
1978 		} else {
1979 			/* Clear filter and add the addresses in the list.
1980 			 */
1981 			out_be32(&p_82xx_addr_filt->gaddr_h, 0x0);
1982 			out_be32(&p_82xx_addr_filt->gaddr_l, 0x0);
1983 
1984 			netdev_for_each_mc_addr(ha, dev) {
1985 				/* Ask CPM to run CRC and set bit in
1986 				 * filter mask.
1987 				 */
1988 				hw_add_addr_in_hash(ugeth, ha->addr);
1989 			}
1990 		}
1991 	}
1992 }
1993 
ucc_geth_stop(struct ucc_geth_private * ugeth)1994 static void ucc_geth_stop(struct ucc_geth_private *ugeth)
1995 {
1996 	struct ucc_geth __iomem *ug_regs = ugeth->ug_regs;
1997 	struct phy_device *phydev = ugeth->phydev;
1998 
1999 	ugeth_vdbg("%s: IN", __func__);
2000 
2001 	/*
2002 	 * Tell the kernel the link is down.
2003 	 * Must be done before disabling the controller
2004 	 * or deadlock may happen.
2005 	 */
2006 	phy_stop(phydev);
2007 
2008 	/* Disable the controller */
2009 	ugeth_disable(ugeth, COMM_DIR_RX_AND_TX);
2010 
2011 	/* Mask all interrupts */
2012 	out_be32(ugeth->uccf->p_uccm, 0x00000000);
2013 
2014 	/* Clear all interrupts */
2015 	out_be32(ugeth->uccf->p_ucce, 0xffffffff);
2016 
2017 	/* Disable Rx and Tx */
2018 	clrbits32(&ug_regs->maccfg1, MACCFG1_ENABLE_RX | MACCFG1_ENABLE_TX);
2019 
2020 	ucc_geth_memclean(ugeth);
2021 }
2022 
ucc_struct_init(struct ucc_geth_private * ugeth)2023 static int ucc_struct_init(struct ucc_geth_private *ugeth)
2024 {
2025 	struct ucc_geth_info *ug_info;
2026 	struct ucc_fast_info *uf_info;
2027 	int i;
2028 
2029 	ug_info = ugeth->ug_info;
2030 	uf_info = &ug_info->uf_info;
2031 
2032 	/* Rx BD lengths */
2033 	for (i = 0; i < ucc_geth_rx_queues(ug_info); i++) {
2034 		if ((ug_info->bdRingLenRx[i] < UCC_GETH_RX_BD_RING_SIZE_MIN) ||
2035 		    (ug_info->bdRingLenRx[i] %
2036 		     UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT)) {
2037 			if (netif_msg_probe(ugeth))
2038 				pr_err("Rx BD ring length must be multiple of 4, no smaller than 8\n");
2039 			return -EINVAL;
2040 		}
2041 	}
2042 
2043 	/* Tx BD lengths */
2044 	for (i = 0; i < ucc_geth_tx_queues(ug_info); i++) {
2045 		if (ug_info->bdRingLenTx[i] < UCC_GETH_TX_BD_RING_SIZE_MIN) {
2046 			if (netif_msg_probe(ugeth))
2047 				pr_err("Tx BD ring length must be no smaller than 2\n");
2048 			return -EINVAL;
2049 		}
2050 	}
2051 
2052 	/* mrblr */
2053 	if ((uf_info->max_rx_buf_length == 0) ||
2054 	    (uf_info->max_rx_buf_length % UCC_GETH_MRBLR_ALIGNMENT)) {
2055 		if (netif_msg_probe(ugeth))
2056 			pr_err("max_rx_buf_length must be non-zero multiple of 128\n");
2057 		return -EINVAL;
2058 	}
2059 
2060 	/* num Tx queues */
2061 	if (ucc_geth_tx_queues(ug_info) > NUM_TX_QUEUES) {
2062 		if (netif_msg_probe(ugeth))
2063 			pr_err("number of tx queues too large\n");
2064 		return -EINVAL;
2065 	}
2066 
2067 	/* num Rx queues */
2068 	if (ucc_geth_rx_queues(ug_info) > NUM_RX_QUEUES) {
2069 		if (netif_msg_probe(ugeth))
2070 			pr_err("number of rx queues too large\n");
2071 		return -EINVAL;
2072 	}
2073 
2074 	/* l2qt */
2075 	for (i = 0; i < UCC_GETH_VLAN_PRIORITY_MAX; i++) {
2076 		if (ug_info->l2qt[i] >= ucc_geth_rx_queues(ug_info)) {
2077 			if (netif_msg_probe(ugeth))
2078 				pr_err("VLAN priority table entry must not be larger than number of Rx queues\n");
2079 			return -EINVAL;
2080 		}
2081 	}
2082 
2083 	/* l3qt */
2084 	for (i = 0; i < UCC_GETH_IP_PRIORITY_MAX; i++) {
2085 		if (ug_info->l3qt[i] >= ucc_geth_rx_queues(ug_info)) {
2086 			if (netif_msg_probe(ugeth))
2087 				pr_err("IP priority table entry must not be larger than number of Rx queues\n");
2088 			return -EINVAL;
2089 		}
2090 	}
2091 
2092 	if (ug_info->cam && !ug_info->ecamptr) {
2093 		if (netif_msg_probe(ugeth))
2094 			pr_err("If cam mode is chosen, must supply cam ptr\n");
2095 		return -EINVAL;
2096 	}
2097 
2098 	if ((ug_info->numStationAddresses !=
2099 	     UCC_GETH_NUM_OF_STATION_ADDRESSES_1) &&
2100 	    ug_info->rxExtendedFiltering) {
2101 		if (netif_msg_probe(ugeth))
2102 			pr_err("Number of station addresses greater than 1 not allowed in extended parsing mode\n");
2103 		return -EINVAL;
2104 	}
2105 
2106 	/* Generate uccm_mask for receive */
2107 	uf_info->uccm_mask = ug_info->eventRegMask & UCCE_OTHER;/* Errors */
2108 	for (i = 0; i < ucc_geth_rx_queues(ug_info); i++)
2109 		uf_info->uccm_mask |= (UCC_GETH_UCCE_RXF0 << i);
2110 
2111 	for (i = 0; i < ucc_geth_tx_queues(ug_info); i++)
2112 		uf_info->uccm_mask |= (UCC_GETH_UCCE_TXB0 << i);
2113 	/* Initialize the general fast UCC block. */
2114 	if (ucc_fast_init(uf_info, &ugeth->uccf)) {
2115 		if (netif_msg_probe(ugeth))
2116 			pr_err("Failed to init uccf\n");
2117 		return -ENOMEM;
2118 	}
2119 
2120 	/* read the number of risc engines, update the riscTx and riscRx
2121 	 * if there are 4 riscs in QE
2122 	 */
2123 	if (qe_get_num_of_risc() == 4) {
2124 		ug_info->riscTx = QE_RISC_ALLOCATION_FOUR_RISCS;
2125 		ug_info->riscRx = QE_RISC_ALLOCATION_FOUR_RISCS;
2126 	}
2127 
2128 	ugeth->ug_regs = ioremap(uf_info->regs, sizeof(*ugeth->ug_regs));
2129 	if (!ugeth->ug_regs) {
2130 		if (netif_msg_probe(ugeth))
2131 			pr_err("Failed to ioremap regs\n");
2132 		return -ENOMEM;
2133 	}
2134 
2135 	return 0;
2136 }
2137 
ucc_geth_alloc_tx(struct ucc_geth_private * ugeth)2138 static int ucc_geth_alloc_tx(struct ucc_geth_private *ugeth)
2139 {
2140 	struct ucc_geth_info *ug_info;
2141 	struct ucc_fast_info *uf_info;
2142 	int length;
2143 	u16 i, j;
2144 	u8 __iomem *bd;
2145 
2146 	ug_info = ugeth->ug_info;
2147 	uf_info = &ug_info->uf_info;
2148 
2149 	/* Allocate Tx bds */
2150 	for (j = 0; j < ucc_geth_tx_queues(ug_info); j++) {
2151 		u32 align = max(UCC_GETH_TX_BD_RING_ALIGNMENT,
2152 				UCC_GETH_TX_BD_RING_SIZE_MEMORY_ALIGNMENT);
2153 		u32 alloc;
2154 
2155 		length = ug_info->bdRingLenTx[j] * sizeof(struct qe_bd);
2156 		alloc = round_up(length, align);
2157 		alloc = roundup_pow_of_two(alloc);
2158 
2159 		ugeth->p_tx_bd_ring[j] = kmalloc(alloc, GFP_KERNEL);
2160 
2161 		if (!ugeth->p_tx_bd_ring[j]) {
2162 			if (netif_msg_ifup(ugeth))
2163 				pr_err("Can not allocate memory for Tx bd rings\n");
2164 			return -ENOMEM;
2165 		}
2166 		/* Zero unused end of bd ring, according to spec */
2167 		memset(ugeth->p_tx_bd_ring[j] + length, 0, alloc - length);
2168 	}
2169 
2170 	/* Init Tx bds */
2171 	for (j = 0; j < ucc_geth_tx_queues(ug_info); j++) {
2172 		/* Setup the skbuff rings */
2173 		ugeth->tx_skbuff[j] =
2174 			kcalloc(ugeth->ug_info->bdRingLenTx[j],
2175 				sizeof(struct sk_buff *), GFP_KERNEL);
2176 
2177 		if (ugeth->tx_skbuff[j] == NULL) {
2178 			if (netif_msg_ifup(ugeth))
2179 				pr_err("Could not allocate tx_skbuff\n");
2180 			return -ENOMEM;
2181 		}
2182 
2183 		ugeth->skb_curtx[j] = ugeth->skb_dirtytx[j] = 0;
2184 		bd = ugeth->confBd[j] = ugeth->txBd[j] = ugeth->p_tx_bd_ring[j];
2185 		for (i = 0; i < ug_info->bdRingLenTx[j]; i++) {
2186 			/* clear bd buffer */
2187 			out_be32(&((struct qe_bd __iomem *)bd)->buf, 0);
2188 			/* set bd status and length */
2189 			out_be32((u32 __iomem *)bd, 0);
2190 			bd += sizeof(struct qe_bd);
2191 		}
2192 		bd -= sizeof(struct qe_bd);
2193 		/* set bd status and length */
2194 		out_be32((u32 __iomem *)bd, T_W); /* for last BD set Wrap bit */
2195 	}
2196 
2197 	return 0;
2198 }
2199 
ucc_geth_alloc_rx(struct ucc_geth_private * ugeth)2200 static int ucc_geth_alloc_rx(struct ucc_geth_private *ugeth)
2201 {
2202 	struct ucc_geth_info *ug_info;
2203 	struct ucc_fast_info *uf_info;
2204 	int length;
2205 	u16 i, j;
2206 	u8 __iomem *bd;
2207 
2208 	ug_info = ugeth->ug_info;
2209 	uf_info = &ug_info->uf_info;
2210 
2211 	/* Allocate Rx bds */
2212 	for (j = 0; j < ucc_geth_rx_queues(ug_info); j++) {
2213 		u32 align = UCC_GETH_RX_BD_RING_ALIGNMENT;
2214 		u32 alloc;
2215 
2216 		length = ug_info->bdRingLenRx[j] * sizeof(struct qe_bd);
2217 		alloc = round_up(length, align);
2218 		alloc = roundup_pow_of_two(alloc);
2219 
2220 		ugeth->p_rx_bd_ring[j] = kmalloc(alloc, GFP_KERNEL);
2221 		if (!ugeth->p_rx_bd_ring[j]) {
2222 			if (netif_msg_ifup(ugeth))
2223 				pr_err("Can not allocate memory for Rx bd rings\n");
2224 			return -ENOMEM;
2225 		}
2226 	}
2227 
2228 	/* Init Rx bds */
2229 	for (j = 0; j < ucc_geth_rx_queues(ug_info); j++) {
2230 		/* Setup the skbuff rings */
2231 		ugeth->rx_skbuff[j] =
2232 			kcalloc(ugeth->ug_info->bdRingLenRx[j],
2233 				sizeof(struct sk_buff *), GFP_KERNEL);
2234 
2235 		if (ugeth->rx_skbuff[j] == NULL) {
2236 			if (netif_msg_ifup(ugeth))
2237 				pr_err("Could not allocate rx_skbuff\n");
2238 			return -ENOMEM;
2239 		}
2240 
2241 		ugeth->skb_currx[j] = 0;
2242 		bd = ugeth->rxBd[j] = ugeth->p_rx_bd_ring[j];
2243 		for (i = 0; i < ug_info->bdRingLenRx[j]; i++) {
2244 			/* set bd status and length */
2245 			out_be32((u32 __iomem *)bd, R_I);
2246 			/* clear bd buffer */
2247 			out_be32(&((struct qe_bd __iomem *)bd)->buf, 0);
2248 			bd += sizeof(struct qe_bd);
2249 		}
2250 		bd -= sizeof(struct qe_bd);
2251 		/* set bd status and length */
2252 		out_be32((u32 __iomem *)bd, R_W); /* for last BD set Wrap bit */
2253 	}
2254 
2255 	return 0;
2256 }
2257 
ucc_geth_startup(struct ucc_geth_private * ugeth)2258 static int ucc_geth_startup(struct ucc_geth_private *ugeth)
2259 {
2260 	struct ucc_geth_82xx_address_filtering_pram __iomem *p_82xx_addr_filt;
2261 	struct ucc_geth_init_pram __iomem *p_init_enet_pram;
2262 	struct ucc_fast_private *uccf;
2263 	struct ucc_geth_info *ug_info;
2264 	struct ucc_fast_info *uf_info;
2265 	struct ucc_fast __iomem *uf_regs;
2266 	struct ucc_geth __iomem *ug_regs;
2267 	int ret_val = -EINVAL;
2268 	u32 remoder = UCC_GETH_REMODER_INIT;
2269 	u32 init_enet_pram_offset, cecr_subblock, command;
2270 	u32 ifstat, i, j, size, l2qt, l3qt;
2271 	u16 temoder = UCC_GETH_TEMODER_INIT;
2272 	u8 function_code = 0;
2273 	u8 __iomem *endOfRing;
2274 	u8 numThreadsRxNumerical, numThreadsTxNumerical;
2275 	s32 rx_glbl_pram_offset, tx_glbl_pram_offset;
2276 
2277 	ugeth_vdbg("%s: IN", __func__);
2278 	uccf = ugeth->uccf;
2279 	ug_info = ugeth->ug_info;
2280 	uf_info = &ug_info->uf_info;
2281 	uf_regs = uccf->uf_regs;
2282 	ug_regs = ugeth->ug_regs;
2283 
2284 	numThreadsRxNumerical = ucc_geth_thread_count(ug_info->numThreadsRx);
2285 	if (!numThreadsRxNumerical) {
2286 		if (netif_msg_ifup(ugeth))
2287 			pr_err("Bad number of Rx threads value\n");
2288 		return -EINVAL;
2289 	}
2290 
2291 	numThreadsTxNumerical = ucc_geth_thread_count(ug_info->numThreadsTx);
2292 	if (!numThreadsTxNumerical) {
2293 		if (netif_msg_ifup(ugeth))
2294 			pr_err("Bad number of Tx threads value\n");
2295 		return -EINVAL;
2296 	}
2297 
2298 	/* Calculate rx_extended_features */
2299 	ugeth->rx_non_dynamic_extended_features = ug_info->ipCheckSumCheck ||
2300 	    ug_info->ipAddressAlignment ||
2301 	    (ug_info->numStationAddresses !=
2302 	     UCC_GETH_NUM_OF_STATION_ADDRESSES_1);
2303 
2304 	ugeth->rx_extended_features = ugeth->rx_non_dynamic_extended_features ||
2305 		(ug_info->vlanOperationTagged != UCC_GETH_VLAN_OPERATION_TAGGED_NOP) ||
2306 		(ug_info->vlanOperationNonTagged !=
2307 		 UCC_GETH_VLAN_OPERATION_NON_TAGGED_NOP);
2308 
2309 	init_default_reg_vals(&uf_regs->upsmr,
2310 			      &ug_regs->maccfg1, &ug_regs->maccfg2);
2311 
2312 	/*                    Set UPSMR                      */
2313 	/* For more details see the hardware spec.           */
2314 	init_rx_parameters(ug_info->bro,
2315 			   ug_info->rsh, ug_info->pro, &uf_regs->upsmr);
2316 
2317 	/* We're going to ignore other registers for now, */
2318 	/* except as needed to get up and running         */
2319 
2320 	/*                    Set MACCFG1                    */
2321 	/* For more details see the hardware spec.           */
2322 	init_flow_control_params(ug_info->aufc,
2323 				 ug_info->receiveFlowControl,
2324 				 ug_info->transmitFlowControl,
2325 				 ug_info->pausePeriod,
2326 				 ug_info->extensionField,
2327 				 &uf_regs->upsmr,
2328 				 &ug_regs->uempr, &ug_regs->maccfg1);
2329 
2330 	setbits32(&ug_regs->maccfg1, MACCFG1_ENABLE_RX | MACCFG1_ENABLE_TX);
2331 
2332 	/*                    Set IPGIFG                     */
2333 	/* For more details see the hardware spec.           */
2334 	ret_val = init_inter_frame_gap_params(ug_info->nonBackToBackIfgPart1,
2335 					      ug_info->nonBackToBackIfgPart2,
2336 					      ug_info->
2337 					      miminumInterFrameGapEnforcement,
2338 					      ug_info->backToBackInterFrameGap,
2339 					      &ug_regs->ipgifg);
2340 	if (ret_val != 0) {
2341 		if (netif_msg_ifup(ugeth))
2342 			pr_err("IPGIFG initialization parameter too large\n");
2343 		return ret_val;
2344 	}
2345 
2346 	/*                    Set HAFDUP                     */
2347 	/* For more details see the hardware spec.           */
2348 	ret_val = init_half_duplex_params(ug_info->altBeb,
2349 					  ug_info->backPressureNoBackoff,
2350 					  ug_info->noBackoff,
2351 					  ug_info->excessDefer,
2352 					  ug_info->altBebTruncation,
2353 					  ug_info->maxRetransmission,
2354 					  ug_info->collisionWindow,
2355 					  &ug_regs->hafdup);
2356 	if (ret_val != 0) {
2357 		if (netif_msg_ifup(ugeth))
2358 			pr_err("Half Duplex initialization parameter too large\n");
2359 		return ret_val;
2360 	}
2361 
2362 	/*                    Set IFSTAT                     */
2363 	/* For more details see the hardware spec.           */
2364 	/* Read only - resets upon read                      */
2365 	ifstat = in_be32(&ug_regs->ifstat);
2366 
2367 	/*                    Clear UEMPR                    */
2368 	/* For more details see the hardware spec.           */
2369 	out_be32(&ug_regs->uempr, 0);
2370 
2371 	/*                    Set UESCR                      */
2372 	/* For more details see the hardware spec.           */
2373 	init_hw_statistics_gathering_mode((ug_info->statisticsMode &
2374 				UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE),
2375 				0, &uf_regs->upsmr, &ug_regs->uescr);
2376 
2377 	ret_val = ucc_geth_alloc_tx(ugeth);
2378 	if (ret_val != 0)
2379 		return ret_val;
2380 
2381 	ret_val = ucc_geth_alloc_rx(ugeth);
2382 	if (ret_val != 0)
2383 		return ret_val;
2384 
2385 	/*
2386 	 * Global PRAM
2387 	 */
2388 	/* Tx global PRAM */
2389 	/* Allocate global tx parameter RAM page */
2390 	tx_glbl_pram_offset =
2391 	    qe_muram_alloc(sizeof(struct ucc_geth_tx_global_pram),
2392 			   UCC_GETH_TX_GLOBAL_PRAM_ALIGNMENT);
2393 	if (tx_glbl_pram_offset < 0) {
2394 		if (netif_msg_ifup(ugeth))
2395 			pr_err("Can not allocate DPRAM memory for p_tx_glbl_pram\n");
2396 		return -ENOMEM;
2397 	}
2398 	ugeth->p_tx_glbl_pram = qe_muram_addr(tx_glbl_pram_offset);
2399 	/* Fill global PRAM */
2400 
2401 	/* TQPTR */
2402 	/* Size varies with number of Tx threads */
2403 	ugeth->thread_dat_tx_offset =
2404 	    qe_muram_alloc(numThreadsTxNumerical *
2405 			   sizeof(struct ucc_geth_thread_data_tx) +
2406 			   32 * (numThreadsTxNumerical == 1),
2407 			   UCC_GETH_THREAD_DATA_ALIGNMENT);
2408 	if (IS_ERR_VALUE(ugeth->thread_dat_tx_offset)) {
2409 		if (netif_msg_ifup(ugeth))
2410 			pr_err("Can not allocate DPRAM memory for p_thread_data_tx\n");
2411 		return -ENOMEM;
2412 	}
2413 
2414 	ugeth->p_thread_data_tx =
2415 	    (struct ucc_geth_thread_data_tx __iomem *) qe_muram_addr(ugeth->
2416 							thread_dat_tx_offset);
2417 	out_be32(&ugeth->p_tx_glbl_pram->tqptr, ugeth->thread_dat_tx_offset);
2418 
2419 	/* vtagtable */
2420 	for (i = 0; i < UCC_GETH_TX_VTAG_TABLE_ENTRY_MAX; i++)
2421 		out_be32(&ugeth->p_tx_glbl_pram->vtagtable[i],
2422 			 ug_info->vtagtable[i]);
2423 
2424 	/* iphoffset */
2425 	for (i = 0; i < TX_IP_OFFSET_ENTRY_MAX; i++)
2426 		out_8(&ugeth->p_tx_glbl_pram->iphoffset[i],
2427 				ug_info->iphoffset[i]);
2428 
2429 	/* SQPTR */
2430 	/* Size varies with number of Tx queues */
2431 	ugeth->send_q_mem_reg_offset =
2432 	    qe_muram_alloc(ucc_geth_tx_queues(ug_info) *
2433 			   sizeof(struct ucc_geth_send_queue_qd),
2434 			   UCC_GETH_SEND_QUEUE_QUEUE_DESCRIPTOR_ALIGNMENT);
2435 	if (IS_ERR_VALUE(ugeth->send_q_mem_reg_offset)) {
2436 		if (netif_msg_ifup(ugeth))
2437 			pr_err("Can not allocate DPRAM memory for p_send_q_mem_reg\n");
2438 		return -ENOMEM;
2439 	}
2440 
2441 	ugeth->p_send_q_mem_reg =
2442 	    (struct ucc_geth_send_queue_mem_region __iomem *) qe_muram_addr(ugeth->
2443 			send_q_mem_reg_offset);
2444 	out_be32(&ugeth->p_tx_glbl_pram->sqptr, ugeth->send_q_mem_reg_offset);
2445 
2446 	/* Setup the table */
2447 	/* Assume BD rings are already established */
2448 	for (i = 0; i < ucc_geth_tx_queues(ug_info); i++) {
2449 		endOfRing =
2450 		    ugeth->p_tx_bd_ring[i] + (ug_info->bdRingLenTx[i] -
2451 					      1) * sizeof(struct qe_bd);
2452 		out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].bd_ring_base,
2453 			 (u32) virt_to_phys(ugeth->p_tx_bd_ring[i]));
2454 		out_be32(&ugeth->p_send_q_mem_reg->sqqd[i].
2455 			 last_bd_completed_address,
2456 			 (u32) virt_to_phys(endOfRing));
2457 	}
2458 
2459 	/* schedulerbasepointer */
2460 
2461 	if (ucc_geth_tx_queues(ug_info) > 1) {
2462 	/* scheduler exists only if more than 1 tx queue */
2463 		ugeth->scheduler_offset =
2464 		    qe_muram_alloc(sizeof(struct ucc_geth_scheduler),
2465 				   UCC_GETH_SCHEDULER_ALIGNMENT);
2466 		if (IS_ERR_VALUE(ugeth->scheduler_offset)) {
2467 			if (netif_msg_ifup(ugeth))
2468 				pr_err("Can not allocate DPRAM memory for p_scheduler\n");
2469 			return -ENOMEM;
2470 		}
2471 
2472 		ugeth->p_scheduler =
2473 		    (struct ucc_geth_scheduler __iomem *) qe_muram_addr(ugeth->
2474 							   scheduler_offset);
2475 		out_be32(&ugeth->p_tx_glbl_pram->schedulerbasepointer,
2476 			 ugeth->scheduler_offset);
2477 
2478 		/* Set values in scheduler */
2479 		out_be32(&ugeth->p_scheduler->mblinterval,
2480 			 ug_info->mblinterval);
2481 		out_be16(&ugeth->p_scheduler->nortsrbytetime,
2482 			 ug_info->nortsrbytetime);
2483 		out_8(&ugeth->p_scheduler->fracsiz, ug_info->fracsiz);
2484 		out_8(&ugeth->p_scheduler->strictpriorityq,
2485 				ug_info->strictpriorityq);
2486 		out_8(&ugeth->p_scheduler->txasap, ug_info->txasap);
2487 		out_8(&ugeth->p_scheduler->extrabw, ug_info->extrabw);
2488 		for (i = 0; i < NUM_TX_QUEUES; i++)
2489 			out_8(&ugeth->p_scheduler->weightfactor[i],
2490 			    ug_info->weightfactor[i]);
2491 
2492 		/* Set pointers to cpucount registers in scheduler */
2493 		ugeth->p_cpucount[0] = &(ugeth->p_scheduler->cpucount0);
2494 		ugeth->p_cpucount[1] = &(ugeth->p_scheduler->cpucount1);
2495 		ugeth->p_cpucount[2] = &(ugeth->p_scheduler->cpucount2);
2496 		ugeth->p_cpucount[3] = &(ugeth->p_scheduler->cpucount3);
2497 		ugeth->p_cpucount[4] = &(ugeth->p_scheduler->cpucount4);
2498 		ugeth->p_cpucount[5] = &(ugeth->p_scheduler->cpucount5);
2499 		ugeth->p_cpucount[6] = &(ugeth->p_scheduler->cpucount6);
2500 		ugeth->p_cpucount[7] = &(ugeth->p_scheduler->cpucount7);
2501 	}
2502 
2503 	/* schedulerbasepointer */
2504 	/* TxRMON_PTR (statistics) */
2505 	if (ug_info->
2506 	    statisticsMode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
2507 		ugeth->tx_fw_statistics_pram_offset =
2508 		    qe_muram_alloc(sizeof
2509 				   (struct ucc_geth_tx_firmware_statistics_pram),
2510 				   UCC_GETH_TX_STATISTICS_ALIGNMENT);
2511 		if (IS_ERR_VALUE(ugeth->tx_fw_statistics_pram_offset)) {
2512 			if (netif_msg_ifup(ugeth))
2513 				pr_err("Can not allocate DPRAM memory for p_tx_fw_statistics_pram\n");
2514 			return -ENOMEM;
2515 		}
2516 		ugeth->p_tx_fw_statistics_pram =
2517 		    (struct ucc_geth_tx_firmware_statistics_pram __iomem *)
2518 		    qe_muram_addr(ugeth->tx_fw_statistics_pram_offset);
2519 	}
2520 
2521 	/* temoder */
2522 	/* Already has speed set */
2523 
2524 	if (ucc_geth_tx_queues(ug_info) > 1)
2525 		temoder |= TEMODER_SCHEDULER_ENABLE;
2526 	if (ug_info->ipCheckSumGenerate)
2527 		temoder |= TEMODER_IP_CHECKSUM_GENERATE;
2528 	temoder |= ((ucc_geth_tx_queues(ug_info) - 1) << TEMODER_NUM_OF_QUEUES_SHIFT);
2529 	out_be16(&ugeth->p_tx_glbl_pram->temoder, temoder);
2530 
2531 	/* Function code register value to be used later */
2532 	function_code = UCC_BMR_BO_BE | UCC_BMR_GBL;
2533 	/* Required for QE */
2534 
2535 	/* function code register */
2536 	out_be32(&ugeth->p_tx_glbl_pram->tstate, ((u32) function_code) << 24);
2537 
2538 	/* Rx global PRAM */
2539 	/* Allocate global rx parameter RAM page */
2540 	rx_glbl_pram_offset =
2541 	    qe_muram_alloc(sizeof(struct ucc_geth_rx_global_pram),
2542 			   UCC_GETH_RX_GLOBAL_PRAM_ALIGNMENT);
2543 	if (rx_glbl_pram_offset < 0) {
2544 		if (netif_msg_ifup(ugeth))
2545 			pr_err("Can not allocate DPRAM memory for p_rx_glbl_pram\n");
2546 		return -ENOMEM;
2547 	}
2548 	ugeth->p_rx_glbl_pram = qe_muram_addr(rx_glbl_pram_offset);
2549 	/* Fill global PRAM */
2550 
2551 	/* RQPTR */
2552 	/* Size varies with number of Rx threads */
2553 	ugeth->thread_dat_rx_offset =
2554 	    qe_muram_alloc(numThreadsRxNumerical *
2555 			   sizeof(struct ucc_geth_thread_data_rx),
2556 			   UCC_GETH_THREAD_DATA_ALIGNMENT);
2557 	if (IS_ERR_VALUE(ugeth->thread_dat_rx_offset)) {
2558 		if (netif_msg_ifup(ugeth))
2559 			pr_err("Can not allocate DPRAM memory for p_thread_data_rx\n");
2560 		return -ENOMEM;
2561 	}
2562 
2563 	ugeth->p_thread_data_rx =
2564 	    (struct ucc_geth_thread_data_rx __iomem *) qe_muram_addr(ugeth->
2565 							thread_dat_rx_offset);
2566 	out_be32(&ugeth->p_rx_glbl_pram->rqptr, ugeth->thread_dat_rx_offset);
2567 
2568 	/* typeorlen */
2569 	out_be16(&ugeth->p_rx_glbl_pram->typeorlen, ug_info->typeorlen);
2570 
2571 	/* rxrmonbaseptr (statistics) */
2572 	if (ug_info->
2573 	    statisticsMode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
2574 		ugeth->rx_fw_statistics_pram_offset =
2575 		    qe_muram_alloc(sizeof
2576 				   (struct ucc_geth_rx_firmware_statistics_pram),
2577 				   UCC_GETH_RX_STATISTICS_ALIGNMENT);
2578 		if (IS_ERR_VALUE(ugeth->rx_fw_statistics_pram_offset)) {
2579 			if (netif_msg_ifup(ugeth))
2580 				pr_err("Can not allocate DPRAM memory for p_rx_fw_statistics_pram\n");
2581 			return -ENOMEM;
2582 		}
2583 		ugeth->p_rx_fw_statistics_pram =
2584 		    (struct ucc_geth_rx_firmware_statistics_pram __iomem *)
2585 		    qe_muram_addr(ugeth->rx_fw_statistics_pram_offset);
2586 	}
2587 
2588 	/* intCoalescingPtr */
2589 
2590 	/* Size varies with number of Rx queues */
2591 	ugeth->rx_irq_coalescing_tbl_offset =
2592 	    qe_muram_alloc(ucc_geth_rx_queues(ug_info) *
2593 			   sizeof(struct ucc_geth_rx_interrupt_coalescing_entry)
2594 			   + 4, UCC_GETH_RX_INTERRUPT_COALESCING_ALIGNMENT);
2595 	if (IS_ERR_VALUE(ugeth->rx_irq_coalescing_tbl_offset)) {
2596 		if (netif_msg_ifup(ugeth))
2597 			pr_err("Can not allocate DPRAM memory for p_rx_irq_coalescing_tbl\n");
2598 		return -ENOMEM;
2599 	}
2600 
2601 	ugeth->p_rx_irq_coalescing_tbl =
2602 	    (struct ucc_geth_rx_interrupt_coalescing_table __iomem *)
2603 	    qe_muram_addr(ugeth->rx_irq_coalescing_tbl_offset);
2604 	out_be32(&ugeth->p_rx_glbl_pram->intcoalescingptr,
2605 		 ugeth->rx_irq_coalescing_tbl_offset);
2606 
2607 	/* Fill interrupt coalescing table */
2608 	for (i = 0; i < ucc_geth_rx_queues(ug_info); i++) {
2609 		out_be32(&ugeth->p_rx_irq_coalescing_tbl->coalescingentry[i].
2610 			 interruptcoalescingmaxvalue,
2611 			 ug_info->interruptcoalescingmaxvalue[i]);
2612 		out_be32(&ugeth->p_rx_irq_coalescing_tbl->coalescingentry[i].
2613 			 interruptcoalescingcounter,
2614 			 ug_info->interruptcoalescingmaxvalue[i]);
2615 	}
2616 
2617 	/* MRBLR */
2618 	init_max_rx_buff_len(uf_info->max_rx_buf_length,
2619 			     &ugeth->p_rx_glbl_pram->mrblr);
2620 	/* MFLR */
2621 	out_be16(&ugeth->p_rx_glbl_pram->mflr, ug_info->maxFrameLength);
2622 	/* MINFLR */
2623 	init_min_frame_len(ug_info->minFrameLength,
2624 			   &ugeth->p_rx_glbl_pram->minflr,
2625 			   &ugeth->p_rx_glbl_pram->mrblr);
2626 	/* MAXD1 */
2627 	out_be16(&ugeth->p_rx_glbl_pram->maxd1, ug_info->maxD1Length);
2628 	/* MAXD2 */
2629 	out_be16(&ugeth->p_rx_glbl_pram->maxd2, ug_info->maxD2Length);
2630 
2631 	/* l2qt */
2632 	l2qt = 0;
2633 	for (i = 0; i < UCC_GETH_VLAN_PRIORITY_MAX; i++)
2634 		l2qt |= (ug_info->l2qt[i] << (28 - 4 * i));
2635 	out_be32(&ugeth->p_rx_glbl_pram->l2qt, l2qt);
2636 
2637 	/* l3qt */
2638 	for (j = 0; j < UCC_GETH_IP_PRIORITY_MAX; j += 8) {
2639 		l3qt = 0;
2640 		for (i = 0; i < 8; i++)
2641 			l3qt |= (ug_info->l3qt[j + i] << (28 - 4 * i));
2642 		out_be32(&ugeth->p_rx_glbl_pram->l3qt[j/8], l3qt);
2643 	}
2644 
2645 	/* vlantype */
2646 	out_be16(&ugeth->p_rx_glbl_pram->vlantype, ug_info->vlantype);
2647 
2648 	/* vlantci */
2649 	out_be16(&ugeth->p_rx_glbl_pram->vlantci, ug_info->vlantci);
2650 
2651 	/* ecamptr */
2652 	out_be32(&ugeth->p_rx_glbl_pram->ecamptr, ug_info->ecamptr);
2653 
2654 	/* RBDQPTR */
2655 	/* Size varies with number of Rx queues */
2656 	ugeth->rx_bd_qs_tbl_offset =
2657 	    qe_muram_alloc(ucc_geth_rx_queues(ug_info) *
2658 			   (sizeof(struct ucc_geth_rx_bd_queues_entry) +
2659 			    sizeof(struct ucc_geth_rx_prefetched_bds)),
2660 			   UCC_GETH_RX_BD_QUEUES_ALIGNMENT);
2661 	if (IS_ERR_VALUE(ugeth->rx_bd_qs_tbl_offset)) {
2662 		if (netif_msg_ifup(ugeth))
2663 			pr_err("Can not allocate DPRAM memory for p_rx_bd_qs_tbl\n");
2664 		return -ENOMEM;
2665 	}
2666 
2667 	ugeth->p_rx_bd_qs_tbl =
2668 	    (struct ucc_geth_rx_bd_queues_entry __iomem *) qe_muram_addr(ugeth->
2669 				    rx_bd_qs_tbl_offset);
2670 	out_be32(&ugeth->p_rx_glbl_pram->rbdqptr, ugeth->rx_bd_qs_tbl_offset);
2671 
2672 	/* Setup the table */
2673 	/* Assume BD rings are already established */
2674 	for (i = 0; i < ucc_geth_rx_queues(ug_info); i++) {
2675 		out_be32(&ugeth->p_rx_bd_qs_tbl[i].externalbdbaseptr,
2676 			 (u32) virt_to_phys(ugeth->p_rx_bd_ring[i]));
2677 		/* rest of fields handled by QE */
2678 	}
2679 
2680 	/* remoder */
2681 	/* Already has speed set */
2682 
2683 	if (ugeth->rx_extended_features)
2684 		remoder |= REMODER_RX_EXTENDED_FEATURES;
2685 	if (ug_info->rxExtendedFiltering)
2686 		remoder |= REMODER_RX_EXTENDED_FILTERING;
2687 	if (ug_info->dynamicMaxFrameLength)
2688 		remoder |= REMODER_DYNAMIC_MAX_FRAME_LENGTH;
2689 	if (ug_info->dynamicMinFrameLength)
2690 		remoder |= REMODER_DYNAMIC_MIN_FRAME_LENGTH;
2691 	remoder |=
2692 	    ug_info->vlanOperationTagged << REMODER_VLAN_OPERATION_TAGGED_SHIFT;
2693 	remoder |=
2694 	    ug_info->
2695 	    vlanOperationNonTagged << REMODER_VLAN_OPERATION_NON_TAGGED_SHIFT;
2696 	remoder |= ug_info->rxQoSMode << REMODER_RX_QOS_MODE_SHIFT;
2697 	remoder |= ((ucc_geth_rx_queues(ug_info) - 1) << REMODER_NUM_OF_QUEUES_SHIFT);
2698 	if (ug_info->ipCheckSumCheck)
2699 		remoder |= REMODER_IP_CHECKSUM_CHECK;
2700 	if (ug_info->ipAddressAlignment)
2701 		remoder |= REMODER_IP_ADDRESS_ALIGNMENT;
2702 	out_be32(&ugeth->p_rx_glbl_pram->remoder, remoder);
2703 
2704 	/* Note that this function must be called */
2705 	/* ONLY AFTER p_tx_fw_statistics_pram */
2706 	/* andp_UccGethRxFirmwareStatisticsPram are allocated ! */
2707 	init_firmware_statistics_gathering_mode((ug_info->
2708 		statisticsMode &
2709 		UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX),
2710 		(ug_info->statisticsMode &
2711 		UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX),
2712 		&ugeth->p_tx_glbl_pram->txrmonbaseptr,
2713 		ugeth->tx_fw_statistics_pram_offset,
2714 		&ugeth->p_rx_glbl_pram->rxrmonbaseptr,
2715 		ugeth->rx_fw_statistics_pram_offset,
2716 		&ugeth->p_tx_glbl_pram->temoder,
2717 		&ugeth->p_rx_glbl_pram->remoder);
2718 
2719 	/* function code register */
2720 	out_8(&ugeth->p_rx_glbl_pram->rstate, function_code);
2721 
2722 	/* initialize extended filtering */
2723 	if (ug_info->rxExtendedFiltering) {
2724 		if (!ug_info->extendedFilteringChainPointer) {
2725 			if (netif_msg_ifup(ugeth))
2726 				pr_err("Null Extended Filtering Chain Pointer\n");
2727 			return -EINVAL;
2728 		}
2729 
2730 		/* Allocate memory for extended filtering Mode Global
2731 		Parameters */
2732 		ugeth->exf_glbl_param_offset =
2733 		    qe_muram_alloc(sizeof(struct ucc_geth_exf_global_pram),
2734 		UCC_GETH_RX_EXTENDED_FILTERING_GLOBAL_PARAMETERS_ALIGNMENT);
2735 		if (IS_ERR_VALUE(ugeth->exf_glbl_param_offset)) {
2736 			if (netif_msg_ifup(ugeth))
2737 				pr_err("Can not allocate DPRAM memory for p_exf_glbl_param\n");
2738 			return -ENOMEM;
2739 		}
2740 
2741 		ugeth->p_exf_glbl_param =
2742 		    (struct ucc_geth_exf_global_pram __iomem *) qe_muram_addr(ugeth->
2743 				 exf_glbl_param_offset);
2744 		out_be32(&ugeth->p_rx_glbl_pram->exfGlobalParam,
2745 			 ugeth->exf_glbl_param_offset);
2746 		out_be32(&ugeth->p_exf_glbl_param->l2pcdptr,
2747 			 (u32) ug_info->extendedFilteringChainPointer);
2748 
2749 	} else {		/* initialize 82xx style address filtering */
2750 
2751 		/* Init individual address recognition registers to disabled */
2752 
2753 		for (j = 0; j < NUM_OF_PADDRS; j++)
2754 			ugeth_82xx_filtering_clear_addr_in_paddr(ugeth, (u8) j);
2755 
2756 		p_82xx_addr_filt =
2757 		    (struct ucc_geth_82xx_address_filtering_pram __iomem *) ugeth->
2758 		    p_rx_glbl_pram->addressfiltering;
2759 
2760 		ugeth_82xx_filtering_clear_all_addr_in_hash(ugeth,
2761 			ENET_ADDR_TYPE_GROUP);
2762 		ugeth_82xx_filtering_clear_all_addr_in_hash(ugeth,
2763 			ENET_ADDR_TYPE_INDIVIDUAL);
2764 	}
2765 
2766 	/*
2767 	 * Initialize UCC at QE level
2768 	 */
2769 
2770 	command = QE_INIT_TX_RX;
2771 
2772 	/* Allocate shadow InitEnet command parameter structure.
2773 	 * This is needed because after the InitEnet command is executed,
2774 	 * the structure in DPRAM is released, because DPRAM is a premium
2775 	 * resource.
2776 	 * This shadow structure keeps a copy of what was done so that the
2777 	 * allocated resources can be released when the channel is freed.
2778 	 */
2779 	if (!(ugeth->p_init_enet_param_shadow =
2780 	      kzalloc(sizeof(struct ucc_geth_init_pram), GFP_KERNEL))) {
2781 		if (netif_msg_ifup(ugeth))
2782 			pr_err("Can not allocate memory for p_UccInitEnetParamShadows\n");
2783 		return -ENOMEM;
2784 	}
2785 
2786 	/* Fill shadow InitEnet command parameter structure */
2787 
2788 	ugeth->p_init_enet_param_shadow->resinit1 =
2789 	    ENET_INIT_PARAM_MAGIC_RES_INIT1;
2790 	ugeth->p_init_enet_param_shadow->resinit2 =
2791 	    ENET_INIT_PARAM_MAGIC_RES_INIT2;
2792 	ugeth->p_init_enet_param_shadow->resinit3 =
2793 	    ENET_INIT_PARAM_MAGIC_RES_INIT3;
2794 	ugeth->p_init_enet_param_shadow->resinit4 =
2795 	    ENET_INIT_PARAM_MAGIC_RES_INIT4;
2796 	ugeth->p_init_enet_param_shadow->resinit5 =
2797 	    ENET_INIT_PARAM_MAGIC_RES_INIT5;
2798 	ugeth->p_init_enet_param_shadow->rgftgfrxglobal |=
2799 	    ((u32) ug_info->numThreadsRx) << ENET_INIT_PARAM_RGF_SHIFT;
2800 	ugeth->p_init_enet_param_shadow->rgftgfrxglobal |=
2801 	    ((u32) ug_info->numThreadsTx) << ENET_INIT_PARAM_TGF_SHIFT;
2802 
2803 	ugeth->p_init_enet_param_shadow->rgftgfrxglobal |=
2804 	    rx_glbl_pram_offset | ug_info->riscRx;
2805 	if ((ug_info->largestexternallookupkeysize !=
2806 	     QE_FLTR_LARGEST_EXTERNAL_TABLE_LOOKUP_KEY_SIZE_NONE) &&
2807 	    (ug_info->largestexternallookupkeysize !=
2808 	     QE_FLTR_LARGEST_EXTERNAL_TABLE_LOOKUP_KEY_SIZE_8_BYTES) &&
2809 	    (ug_info->largestexternallookupkeysize !=
2810 	     QE_FLTR_LARGEST_EXTERNAL_TABLE_LOOKUP_KEY_SIZE_16_BYTES)) {
2811 		if (netif_msg_ifup(ugeth))
2812 			pr_err("Invalid largest External Lookup Key Size\n");
2813 		return -EINVAL;
2814 	}
2815 	ugeth->p_init_enet_param_shadow->largestexternallookupkeysize =
2816 	    ug_info->largestexternallookupkeysize;
2817 	size = sizeof(struct ucc_geth_thread_rx_pram);
2818 	if (ug_info->rxExtendedFiltering) {
2819 		size += THREAD_RX_PRAM_ADDITIONAL_FOR_EXTENDED_FILTERING;
2820 		if (ug_info->largestexternallookupkeysize ==
2821 		    QE_FLTR_LARGEST_EXTERNAL_TABLE_LOOKUP_KEY_SIZE_8_BYTES)
2822 			size +=
2823 			    THREAD_RX_PRAM_ADDITIONAL_FOR_EXTENDED_FILTERING_8;
2824 		if (ug_info->largestexternallookupkeysize ==
2825 		    QE_FLTR_LARGEST_EXTERNAL_TABLE_LOOKUP_KEY_SIZE_16_BYTES)
2826 			size +=
2827 			    THREAD_RX_PRAM_ADDITIONAL_FOR_EXTENDED_FILTERING_16;
2828 	}
2829 
2830 	if ((ret_val = fill_init_enet_entries(ugeth, &(ugeth->
2831 		p_init_enet_param_shadow->rxthread[0]),
2832 		(u8) (numThreadsRxNumerical + 1)
2833 		/* Rx needs one extra for terminator */
2834 		, size, UCC_GETH_THREAD_RX_PRAM_ALIGNMENT,
2835 		ug_info->riscRx, 1)) != 0) {
2836 		if (netif_msg_ifup(ugeth))
2837 			pr_err("Can not fill p_init_enet_param_shadow\n");
2838 		return ret_val;
2839 	}
2840 
2841 	ugeth->p_init_enet_param_shadow->txglobal =
2842 	    tx_glbl_pram_offset | ug_info->riscTx;
2843 	if ((ret_val =
2844 	     fill_init_enet_entries(ugeth,
2845 				    &(ugeth->p_init_enet_param_shadow->
2846 				      txthread[0]), numThreadsTxNumerical,
2847 				    sizeof(struct ucc_geth_thread_tx_pram),
2848 				    UCC_GETH_THREAD_TX_PRAM_ALIGNMENT,
2849 				    ug_info->riscTx, 0)) != 0) {
2850 		if (netif_msg_ifup(ugeth))
2851 			pr_err("Can not fill p_init_enet_param_shadow\n");
2852 		return ret_val;
2853 	}
2854 
2855 	/* Load Rx bds with buffers */
2856 	for (i = 0; i < ucc_geth_rx_queues(ug_info); i++) {
2857 		if ((ret_val = rx_bd_buffer_set(ugeth, (u8) i)) != 0) {
2858 			if (netif_msg_ifup(ugeth))
2859 				pr_err("Can not fill Rx bds with buffers\n");
2860 			return ret_val;
2861 		}
2862 	}
2863 
2864 	/* Allocate InitEnet command parameter structure */
2865 	init_enet_pram_offset = qe_muram_alloc(sizeof(struct ucc_geth_init_pram), 4);
2866 	if (IS_ERR_VALUE(init_enet_pram_offset)) {
2867 		if (netif_msg_ifup(ugeth))
2868 			pr_err("Can not allocate DPRAM memory for p_init_enet_pram\n");
2869 		return -ENOMEM;
2870 	}
2871 	p_init_enet_pram =
2872 	    (struct ucc_geth_init_pram __iomem *) qe_muram_addr(init_enet_pram_offset);
2873 
2874 	/* Copy shadow InitEnet command parameter structure into PRAM */
2875 	out_8(&p_init_enet_pram->resinit1,
2876 			ugeth->p_init_enet_param_shadow->resinit1);
2877 	out_8(&p_init_enet_pram->resinit2,
2878 			ugeth->p_init_enet_param_shadow->resinit2);
2879 	out_8(&p_init_enet_pram->resinit3,
2880 			ugeth->p_init_enet_param_shadow->resinit3);
2881 	out_8(&p_init_enet_pram->resinit4,
2882 			ugeth->p_init_enet_param_shadow->resinit4);
2883 	out_be16(&p_init_enet_pram->resinit5,
2884 		 ugeth->p_init_enet_param_shadow->resinit5);
2885 	out_8(&p_init_enet_pram->largestexternallookupkeysize,
2886 	    ugeth->p_init_enet_param_shadow->largestexternallookupkeysize);
2887 	out_be32(&p_init_enet_pram->rgftgfrxglobal,
2888 		 ugeth->p_init_enet_param_shadow->rgftgfrxglobal);
2889 	for (i = 0; i < ENET_INIT_PARAM_MAX_ENTRIES_RX; i++)
2890 		out_be32(&p_init_enet_pram->rxthread[i],
2891 			 ugeth->p_init_enet_param_shadow->rxthread[i]);
2892 	out_be32(&p_init_enet_pram->txglobal,
2893 		 ugeth->p_init_enet_param_shadow->txglobal);
2894 	for (i = 0; i < ENET_INIT_PARAM_MAX_ENTRIES_TX; i++)
2895 		out_be32(&p_init_enet_pram->txthread[i],
2896 			 ugeth->p_init_enet_param_shadow->txthread[i]);
2897 
2898 	/* Issue QE command */
2899 	cecr_subblock =
2900 	    ucc_fast_get_qe_cr_subblock(ugeth->ug_info->uf_info.ucc_num);
2901 	qe_issue_cmd(command, cecr_subblock, QE_CR_PROTOCOL_ETHERNET,
2902 		     init_enet_pram_offset);
2903 
2904 	/* Free InitEnet command parameter */
2905 	qe_muram_free(init_enet_pram_offset);
2906 
2907 	return 0;
2908 }
2909 
2910 /* This is called by the kernel when a frame is ready for transmission. */
2911 /* It is pointed to by the dev->hard_start_xmit function pointer */
2912 static netdev_tx_t
ucc_geth_start_xmit(struct sk_buff * skb,struct net_device * dev)2913 ucc_geth_start_xmit(struct sk_buff *skb, struct net_device *dev)
2914 {
2915 	struct ucc_geth_private *ugeth = netdev_priv(dev);
2916 #ifdef CONFIG_UGETH_TX_ON_DEMAND
2917 	struct ucc_fast_private *uccf;
2918 #endif
2919 	u8 __iomem *bd;			/* BD pointer */
2920 	u32 bd_status;
2921 	u8 txQ = 0;
2922 	unsigned long flags;
2923 
2924 	ugeth_vdbg("%s: IN", __func__);
2925 
2926 	netdev_sent_queue(dev, skb->len);
2927 	spin_lock_irqsave(&ugeth->lock, flags);
2928 
2929 	dev->stats.tx_bytes += skb->len;
2930 
2931 	/* Start from the next BD that should be filled */
2932 	bd = ugeth->txBd[txQ];
2933 	bd_status = in_be32((u32 __iomem *)bd);
2934 	/* Save the skb pointer so we can free it later */
2935 	ugeth->tx_skbuff[txQ][ugeth->skb_curtx[txQ]] = skb;
2936 
2937 	/* Update the current skb pointer (wrapping if this was the last) */
2938 	ugeth->skb_curtx[txQ] =
2939 	    (ugeth->skb_curtx[txQ] +
2940 	     1) & TX_RING_MOD_MASK(ugeth->ug_info->bdRingLenTx[txQ]);
2941 
2942 	/* set up the buffer descriptor */
2943 	out_be32(&((struct qe_bd __iomem *)bd)->buf,
2944 		      dma_map_single(ugeth->dev, skb->data,
2945 			      skb->len, DMA_TO_DEVICE));
2946 
2947 	/* printk(KERN_DEBUG"skb->data is 0x%x\n",skb->data); */
2948 
2949 	bd_status = (bd_status & T_W) | T_R | T_I | T_L | skb->len;
2950 
2951 	/* set bd status and length */
2952 	out_be32((u32 __iomem *)bd, bd_status);
2953 
2954 	/* Move to next BD in the ring */
2955 	if (!(bd_status & T_W))
2956 		bd += sizeof(struct qe_bd);
2957 	else
2958 		bd = ugeth->p_tx_bd_ring[txQ];
2959 
2960 	/* If the next BD still needs to be cleaned up, then the bds
2961 	   are full.  We need to tell the kernel to stop sending us stuff. */
2962 	if (bd == ugeth->confBd[txQ]) {
2963 		if (!netif_queue_stopped(dev))
2964 			netif_stop_queue(dev);
2965 	}
2966 
2967 	ugeth->txBd[txQ] = bd;
2968 
2969 	skb_tx_timestamp(skb);
2970 
2971 	if (ugeth->p_scheduler) {
2972 		ugeth->cpucount[txQ]++;
2973 		/* Indicate to QE that there are more Tx bds ready for
2974 		transmission */
2975 		/* This is done by writing a running counter of the bd
2976 		count to the scheduler PRAM. */
2977 		out_be16(ugeth->p_cpucount[txQ], ugeth->cpucount[txQ]);
2978 	}
2979 
2980 #ifdef CONFIG_UGETH_TX_ON_DEMAND
2981 	uccf = ugeth->uccf;
2982 	out_be16(uccf->p_utodr, UCC_FAST_TOD);
2983 #endif
2984 	spin_unlock_irqrestore(&ugeth->lock, flags);
2985 
2986 	return NETDEV_TX_OK;
2987 }
2988 
ucc_geth_rx(struct ucc_geth_private * ugeth,u8 rxQ,int rx_work_limit)2989 static int ucc_geth_rx(struct ucc_geth_private *ugeth, u8 rxQ, int rx_work_limit)
2990 {
2991 	struct sk_buff *skb;
2992 	u8 __iomem *bd;
2993 	u16 length, howmany = 0;
2994 	u32 bd_status;
2995 	u8 *bdBuffer;
2996 	struct net_device *dev;
2997 
2998 	ugeth_vdbg("%s: IN", __func__);
2999 
3000 	dev = ugeth->ndev;
3001 
3002 	/* collect received buffers */
3003 	bd = ugeth->rxBd[rxQ];
3004 
3005 	bd_status = in_be32((u32 __iomem *)bd);
3006 
3007 	/* while there are received buffers and BD is full (~R_E) */
3008 	while (!((bd_status & (R_E)) || (--rx_work_limit < 0))) {
3009 		bdBuffer = (u8 *) in_be32(&((struct qe_bd __iomem *)bd)->buf);
3010 		length = (u16) ((bd_status & BD_LENGTH_MASK) - 4);
3011 		skb = ugeth->rx_skbuff[rxQ][ugeth->skb_currx[rxQ]];
3012 
3013 		/* determine whether buffer is first, last, first and last
3014 		(single buffer frame) or middle (not first and not last) */
3015 		if (!skb ||
3016 		    (!(bd_status & (R_F | R_L))) ||
3017 		    (bd_status & R_ERRORS_FATAL)) {
3018 			if (netif_msg_rx_err(ugeth))
3019 				pr_err("%d: ERROR!!! skb - 0x%08x\n",
3020 				       __LINE__, (u32)skb);
3021 			dev_kfree_skb(skb);
3022 
3023 			ugeth->rx_skbuff[rxQ][ugeth->skb_currx[rxQ]] = NULL;
3024 			dev->stats.rx_dropped++;
3025 		} else {
3026 			dev->stats.rx_packets++;
3027 			howmany++;
3028 
3029 			/* Prep the skb for the packet */
3030 			skb_put(skb, length);
3031 
3032 			/* Tell the skb what kind of packet this is */
3033 			skb->protocol = eth_type_trans(skb, ugeth->ndev);
3034 
3035 			dev->stats.rx_bytes += length;
3036 			/* Send the packet up the stack */
3037 			netif_receive_skb(skb);
3038 		}
3039 
3040 		skb = get_new_skb(ugeth, bd);
3041 		if (!skb) {
3042 			if (netif_msg_rx_err(ugeth))
3043 				pr_warn("No Rx Data Buffer\n");
3044 			dev->stats.rx_dropped++;
3045 			break;
3046 		}
3047 
3048 		ugeth->rx_skbuff[rxQ][ugeth->skb_currx[rxQ]] = skb;
3049 
3050 		/* update to point at the next skb */
3051 		ugeth->skb_currx[rxQ] =
3052 		    (ugeth->skb_currx[rxQ] +
3053 		     1) & RX_RING_MOD_MASK(ugeth->ug_info->bdRingLenRx[rxQ]);
3054 
3055 		if (bd_status & R_W)
3056 			bd = ugeth->p_rx_bd_ring[rxQ];
3057 		else
3058 			bd += sizeof(struct qe_bd);
3059 
3060 		bd_status = in_be32((u32 __iomem *)bd);
3061 	}
3062 
3063 	ugeth->rxBd[rxQ] = bd;
3064 	return howmany;
3065 }
3066 
ucc_geth_tx(struct net_device * dev,u8 txQ)3067 static int ucc_geth_tx(struct net_device *dev, u8 txQ)
3068 {
3069 	/* Start from the next BD that should be filled */
3070 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3071 	unsigned int bytes_sent = 0;
3072 	int howmany = 0;
3073 	u8 __iomem *bd;		/* BD pointer */
3074 	u32 bd_status;
3075 
3076 	bd = ugeth->confBd[txQ];
3077 	bd_status = in_be32((u32 __iomem *)bd);
3078 
3079 	/* Normal processing. */
3080 	while ((bd_status & T_R) == 0) {
3081 		struct sk_buff *skb;
3082 
3083 		/* BD contains already transmitted buffer.   */
3084 		/* Handle the transmitted buffer and release */
3085 		/* the BD to be used with the current frame  */
3086 
3087 		skb = ugeth->tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]];
3088 		if (!skb)
3089 			break;
3090 		howmany++;
3091 		bytes_sent += skb->len;
3092 		dev->stats.tx_packets++;
3093 
3094 		dev_consume_skb_any(skb);
3095 
3096 		ugeth->tx_skbuff[txQ][ugeth->skb_dirtytx[txQ]] = NULL;
3097 		ugeth->skb_dirtytx[txQ] =
3098 		    (ugeth->skb_dirtytx[txQ] +
3099 		     1) & TX_RING_MOD_MASK(ugeth->ug_info->bdRingLenTx[txQ]);
3100 
3101 		/* We freed a buffer, so now we can restart transmission */
3102 		if (netif_queue_stopped(dev))
3103 			netif_wake_queue(dev);
3104 
3105 		/* Advance the confirmation BD pointer */
3106 		if (!(bd_status & T_W))
3107 			bd += sizeof(struct qe_bd);
3108 		else
3109 			bd = ugeth->p_tx_bd_ring[txQ];
3110 		bd_status = in_be32((u32 __iomem *)bd);
3111 	}
3112 	ugeth->confBd[txQ] = bd;
3113 	netdev_completed_queue(dev, howmany, bytes_sent);
3114 	return 0;
3115 }
3116 
ucc_geth_poll(struct napi_struct * napi,int budget)3117 static int ucc_geth_poll(struct napi_struct *napi, int budget)
3118 {
3119 	struct ucc_geth_private *ugeth = container_of(napi, struct ucc_geth_private, napi);
3120 	struct ucc_geth_info *ug_info;
3121 	int howmany, i;
3122 
3123 	ug_info = ugeth->ug_info;
3124 
3125 	/* Tx event processing */
3126 	spin_lock(&ugeth->lock);
3127 	for (i = 0; i < ucc_geth_tx_queues(ug_info); i++)
3128 		ucc_geth_tx(ugeth->ndev, i);
3129 	spin_unlock(&ugeth->lock);
3130 
3131 	howmany = 0;
3132 	for (i = 0; i < ucc_geth_rx_queues(ug_info); i++)
3133 		howmany += ucc_geth_rx(ugeth, i, budget - howmany);
3134 
3135 	if (howmany < budget) {
3136 		napi_complete_done(napi, howmany);
3137 		setbits32(ugeth->uccf->p_uccm, UCCE_RX_EVENTS | UCCE_TX_EVENTS);
3138 	}
3139 
3140 	return howmany;
3141 }
3142 
ucc_geth_irq_handler(int irq,void * info)3143 static irqreturn_t ucc_geth_irq_handler(int irq, void *info)
3144 {
3145 	struct net_device *dev = info;
3146 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3147 	struct ucc_fast_private *uccf;
3148 	struct ucc_geth_info *ug_info;
3149 	register u32 ucce;
3150 	register u32 uccm;
3151 
3152 	ugeth_vdbg("%s: IN", __func__);
3153 
3154 	uccf = ugeth->uccf;
3155 	ug_info = ugeth->ug_info;
3156 
3157 	/* read and clear events */
3158 	ucce = (u32) in_be32(uccf->p_ucce);
3159 	uccm = (u32) in_be32(uccf->p_uccm);
3160 	ucce &= uccm;
3161 	out_be32(uccf->p_ucce, ucce);
3162 
3163 	/* check for receive events that require processing */
3164 	if (ucce & (UCCE_RX_EVENTS | UCCE_TX_EVENTS)) {
3165 		if (napi_schedule_prep(&ugeth->napi)) {
3166 			uccm &= ~(UCCE_RX_EVENTS | UCCE_TX_EVENTS);
3167 			out_be32(uccf->p_uccm, uccm);
3168 			__napi_schedule(&ugeth->napi);
3169 		}
3170 	}
3171 
3172 	/* Errors and other events */
3173 	if (ucce & UCCE_OTHER) {
3174 		if (ucce & UCC_GETH_UCCE_BSY)
3175 			dev->stats.rx_errors++;
3176 		if (ucce & UCC_GETH_UCCE_TXE)
3177 			dev->stats.tx_errors++;
3178 	}
3179 
3180 	return IRQ_HANDLED;
3181 }
3182 
3183 #ifdef CONFIG_NET_POLL_CONTROLLER
3184 /*
3185  * Polling 'interrupt' - used by things like netconsole to send skbs
3186  * without having to re-enable interrupts. It's not called while
3187  * the interrupt routine is executing.
3188  */
ucc_netpoll(struct net_device * dev)3189 static void ucc_netpoll(struct net_device *dev)
3190 {
3191 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3192 	int irq = ugeth->ug_info->uf_info.irq;
3193 
3194 	disable_irq(irq);
3195 	ucc_geth_irq_handler(irq, dev);
3196 	enable_irq(irq);
3197 }
3198 #endif /* CONFIG_NET_POLL_CONTROLLER */
3199 
ucc_geth_set_mac_addr(struct net_device * dev,void * p)3200 static int ucc_geth_set_mac_addr(struct net_device *dev, void *p)
3201 {
3202 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3203 	struct sockaddr *addr = p;
3204 
3205 	if (!is_valid_ether_addr(addr->sa_data))
3206 		return -EADDRNOTAVAIL;
3207 
3208 	eth_hw_addr_set(dev, addr->sa_data);
3209 
3210 	/*
3211 	 * If device is not running, we will set mac addr register
3212 	 * when opening the device.
3213 	 */
3214 	if (!netif_running(dev))
3215 		return 0;
3216 
3217 	spin_lock_irq(&ugeth->lock);
3218 	init_mac_station_addr_regs(dev->dev_addr[0],
3219 				   dev->dev_addr[1],
3220 				   dev->dev_addr[2],
3221 				   dev->dev_addr[3],
3222 				   dev->dev_addr[4],
3223 				   dev->dev_addr[5],
3224 				   &ugeth->ug_regs->macstnaddr1,
3225 				   &ugeth->ug_regs->macstnaddr2);
3226 	spin_unlock_irq(&ugeth->lock);
3227 
3228 	return 0;
3229 }
3230 
ucc_geth_init_mac(struct ucc_geth_private * ugeth)3231 static int ucc_geth_init_mac(struct ucc_geth_private *ugeth)
3232 {
3233 	struct net_device *dev = ugeth->ndev;
3234 	int err;
3235 
3236 	err = ucc_struct_init(ugeth);
3237 	if (err) {
3238 		netif_err(ugeth, ifup, dev, "Cannot configure internal struct, aborting\n");
3239 		goto err;
3240 	}
3241 
3242 	err = ucc_geth_startup(ugeth);
3243 	if (err) {
3244 		netif_err(ugeth, ifup, dev, "Cannot configure net device, aborting\n");
3245 		goto err;
3246 	}
3247 
3248 	err = adjust_enet_interface(ugeth);
3249 	if (err) {
3250 		netif_err(ugeth, ifup, dev, "Cannot configure net device, aborting\n");
3251 		goto err;
3252 	}
3253 
3254 	/*       Set MACSTNADDR1, MACSTNADDR2                */
3255 	/* For more details see the hardware spec.           */
3256 	init_mac_station_addr_regs(dev->dev_addr[0],
3257 				   dev->dev_addr[1],
3258 				   dev->dev_addr[2],
3259 				   dev->dev_addr[3],
3260 				   dev->dev_addr[4],
3261 				   dev->dev_addr[5],
3262 				   &ugeth->ug_regs->macstnaddr1,
3263 				   &ugeth->ug_regs->macstnaddr2);
3264 
3265 	err = ugeth_enable(ugeth, COMM_DIR_RX_AND_TX);
3266 	if (err) {
3267 		netif_err(ugeth, ifup, dev, "Cannot enable net device, aborting\n");
3268 		goto err;
3269 	}
3270 
3271 	return 0;
3272 err:
3273 	ucc_geth_stop(ugeth);
3274 	return err;
3275 }
3276 
3277 /* Called when something needs to use the ethernet device */
3278 /* Returns 0 for success. */
ucc_geth_open(struct net_device * dev)3279 static int ucc_geth_open(struct net_device *dev)
3280 {
3281 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3282 	int err;
3283 
3284 	ugeth_vdbg("%s: IN", __func__);
3285 
3286 	/* Test station address */
3287 	if (dev->dev_addr[0] & ENET_GROUP_ADDR) {
3288 		netif_err(ugeth, ifup, dev,
3289 			  "Multicast address used for station address - is this what you wanted?\n");
3290 		return -EINVAL;
3291 	}
3292 
3293 	err = init_phy(dev);
3294 	if (err) {
3295 		netif_err(ugeth, ifup, dev, "Cannot initialize PHY, aborting\n");
3296 		return err;
3297 	}
3298 
3299 	err = ucc_geth_init_mac(ugeth);
3300 	if (err) {
3301 		netif_err(ugeth, ifup, dev, "Cannot initialize MAC, aborting\n");
3302 		goto err;
3303 	}
3304 
3305 	err = request_irq(ugeth->ug_info->uf_info.irq, ucc_geth_irq_handler,
3306 			  0, "UCC Geth", dev);
3307 	if (err) {
3308 		netif_err(ugeth, ifup, dev, "Cannot get IRQ for net device, aborting\n");
3309 		goto err;
3310 	}
3311 
3312 	phy_start(ugeth->phydev);
3313 	napi_enable(&ugeth->napi);
3314 	netdev_reset_queue(dev);
3315 	netif_start_queue(dev);
3316 
3317 	device_set_wakeup_capable(&dev->dev,
3318 			qe_alive_during_sleep() || ugeth->phydev->irq);
3319 	device_set_wakeup_enable(&dev->dev, ugeth->wol_en);
3320 
3321 	return err;
3322 
3323 err:
3324 	ucc_geth_stop(ugeth);
3325 	return err;
3326 }
3327 
3328 /* Stops the kernel queue, and halts the controller */
ucc_geth_close(struct net_device * dev)3329 static int ucc_geth_close(struct net_device *dev)
3330 {
3331 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3332 
3333 	ugeth_vdbg("%s: IN", __func__);
3334 
3335 	napi_disable(&ugeth->napi);
3336 
3337 	cancel_work_sync(&ugeth->timeout_work);
3338 	ucc_geth_stop(ugeth);
3339 	phy_disconnect(ugeth->phydev);
3340 	ugeth->phydev = NULL;
3341 
3342 	free_irq(ugeth->ug_info->uf_info.irq, ugeth->ndev);
3343 
3344 	netif_stop_queue(dev);
3345 	netdev_reset_queue(dev);
3346 
3347 	return 0;
3348 }
3349 
3350 /* Reopen device. This will reset the MAC and PHY. */
ucc_geth_timeout_work(struct work_struct * work)3351 static void ucc_geth_timeout_work(struct work_struct *work)
3352 {
3353 	struct ucc_geth_private *ugeth;
3354 	struct net_device *dev;
3355 
3356 	ugeth = container_of(work, struct ucc_geth_private, timeout_work);
3357 	dev = ugeth->ndev;
3358 
3359 	ugeth_vdbg("%s: IN", __func__);
3360 
3361 	dev->stats.tx_errors++;
3362 
3363 	ugeth_dump_regs(ugeth);
3364 
3365 	if (dev->flags & IFF_UP) {
3366 		/*
3367 		 * Must reset MAC *and* PHY. This is done by reopening
3368 		 * the device.
3369 		 */
3370 		netif_tx_stop_all_queues(dev);
3371 		ucc_geth_stop(ugeth);
3372 		ucc_geth_init_mac(ugeth);
3373 		/* Must start PHY here */
3374 		phy_start(ugeth->phydev);
3375 		netif_tx_start_all_queues(dev);
3376 	}
3377 
3378 	netif_tx_schedule_all(dev);
3379 }
3380 
3381 /*
3382  * ucc_geth_timeout gets called when a packet has not been
3383  * transmitted after a set amount of time.
3384  */
ucc_geth_timeout(struct net_device * dev,unsigned int txqueue)3385 static void ucc_geth_timeout(struct net_device *dev, unsigned int txqueue)
3386 {
3387 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3388 
3389 	schedule_work(&ugeth->timeout_work);
3390 }
3391 
3392 
3393 #ifdef CONFIG_PM
3394 
ucc_geth_suspend(struct platform_device * ofdev,pm_message_t state)3395 static int ucc_geth_suspend(struct platform_device *ofdev, pm_message_t state)
3396 {
3397 	struct net_device *ndev = platform_get_drvdata(ofdev);
3398 	struct ucc_geth_private *ugeth = netdev_priv(ndev);
3399 
3400 	if (!netif_running(ndev))
3401 		return 0;
3402 
3403 	netif_device_detach(ndev);
3404 	napi_disable(&ugeth->napi);
3405 
3406 	/*
3407 	 * Disable the controller, otherwise we'll wakeup on any network
3408 	 * activity.
3409 	 */
3410 	ugeth_disable(ugeth, COMM_DIR_RX_AND_TX);
3411 
3412 	if (ugeth->wol_en & WAKE_MAGIC) {
3413 		setbits32(ugeth->uccf->p_uccm, UCC_GETH_UCCE_MPD);
3414 		setbits32(&ugeth->ug_regs->maccfg2, MACCFG2_MPE);
3415 		ucc_fast_enable(ugeth->uccf, COMM_DIR_RX_AND_TX);
3416 	} else if (!(ugeth->wol_en & WAKE_PHY)) {
3417 		phy_stop(ugeth->phydev);
3418 	}
3419 
3420 	return 0;
3421 }
3422 
ucc_geth_resume(struct platform_device * ofdev)3423 static int ucc_geth_resume(struct platform_device *ofdev)
3424 {
3425 	struct net_device *ndev = platform_get_drvdata(ofdev);
3426 	struct ucc_geth_private *ugeth = netdev_priv(ndev);
3427 	int err;
3428 
3429 	if (!netif_running(ndev))
3430 		return 0;
3431 
3432 	if (qe_alive_during_sleep()) {
3433 		if (ugeth->wol_en & WAKE_MAGIC) {
3434 			ucc_fast_disable(ugeth->uccf, COMM_DIR_RX_AND_TX);
3435 			clrbits32(&ugeth->ug_regs->maccfg2, MACCFG2_MPE);
3436 			clrbits32(ugeth->uccf->p_uccm, UCC_GETH_UCCE_MPD);
3437 		}
3438 		ugeth_enable(ugeth, COMM_DIR_RX_AND_TX);
3439 	} else {
3440 		/*
3441 		 * Full reinitialization is required if QE shuts down
3442 		 * during sleep.
3443 		 */
3444 		ucc_geth_memclean(ugeth);
3445 
3446 		err = ucc_geth_init_mac(ugeth);
3447 		if (err) {
3448 			netdev_err(ndev, "Cannot initialize MAC, aborting\n");
3449 			return err;
3450 		}
3451 	}
3452 
3453 	ugeth->oldlink = 0;
3454 	ugeth->oldspeed = 0;
3455 	ugeth->oldduplex = -1;
3456 
3457 	phy_stop(ugeth->phydev);
3458 	phy_start(ugeth->phydev);
3459 
3460 	napi_enable(&ugeth->napi);
3461 	netif_device_attach(ndev);
3462 
3463 	return 0;
3464 }
3465 
3466 #else
3467 #define ucc_geth_suspend NULL
3468 #define ucc_geth_resume NULL
3469 #endif
3470 
to_phy_interface(const char * phy_connection_type)3471 static phy_interface_t to_phy_interface(const char *phy_connection_type)
3472 {
3473 	if (strcasecmp(phy_connection_type, "mii") == 0)
3474 		return PHY_INTERFACE_MODE_MII;
3475 	if (strcasecmp(phy_connection_type, "gmii") == 0)
3476 		return PHY_INTERFACE_MODE_GMII;
3477 	if (strcasecmp(phy_connection_type, "tbi") == 0)
3478 		return PHY_INTERFACE_MODE_TBI;
3479 	if (strcasecmp(phy_connection_type, "rmii") == 0)
3480 		return PHY_INTERFACE_MODE_RMII;
3481 	if (strcasecmp(phy_connection_type, "rgmii") == 0)
3482 		return PHY_INTERFACE_MODE_RGMII;
3483 	if (strcasecmp(phy_connection_type, "rgmii-id") == 0)
3484 		return PHY_INTERFACE_MODE_RGMII_ID;
3485 	if (strcasecmp(phy_connection_type, "rgmii-txid") == 0)
3486 		return PHY_INTERFACE_MODE_RGMII_TXID;
3487 	if (strcasecmp(phy_connection_type, "rgmii-rxid") == 0)
3488 		return PHY_INTERFACE_MODE_RGMII_RXID;
3489 	if (strcasecmp(phy_connection_type, "rtbi") == 0)
3490 		return PHY_INTERFACE_MODE_RTBI;
3491 	if (strcasecmp(phy_connection_type, "sgmii") == 0)
3492 		return PHY_INTERFACE_MODE_SGMII;
3493 
3494 	return PHY_INTERFACE_MODE_MII;
3495 }
3496 
ucc_geth_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)3497 static int ucc_geth_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
3498 {
3499 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3500 
3501 	if (!netif_running(dev))
3502 		return -EINVAL;
3503 
3504 	if (!ugeth->phydev)
3505 		return -ENODEV;
3506 
3507 	return phy_mii_ioctl(ugeth->phydev, rq, cmd);
3508 }
3509 
3510 static const struct net_device_ops ucc_geth_netdev_ops = {
3511 	.ndo_open		= ucc_geth_open,
3512 	.ndo_stop		= ucc_geth_close,
3513 	.ndo_start_xmit		= ucc_geth_start_xmit,
3514 	.ndo_validate_addr	= eth_validate_addr,
3515 	.ndo_change_carrier     = fixed_phy_change_carrier,
3516 	.ndo_set_mac_address	= ucc_geth_set_mac_addr,
3517 	.ndo_set_rx_mode	= ucc_geth_set_multi,
3518 	.ndo_tx_timeout		= ucc_geth_timeout,
3519 	.ndo_eth_ioctl		= ucc_geth_ioctl,
3520 #ifdef CONFIG_NET_POLL_CONTROLLER
3521 	.ndo_poll_controller	= ucc_netpoll,
3522 #endif
3523 };
3524 
ucc_geth_parse_clock(struct device_node * np,const char * which,enum qe_clock * out)3525 static int ucc_geth_parse_clock(struct device_node *np, const char *which,
3526 				enum qe_clock *out)
3527 {
3528 	const char *sprop;
3529 	char buf[24];
3530 
3531 	snprintf(buf, sizeof(buf), "%s-clock-name", which);
3532 	sprop = of_get_property(np, buf, NULL);
3533 	if (sprop) {
3534 		*out = qe_clock_source(sprop);
3535 	} else {
3536 		u32 val;
3537 
3538 		snprintf(buf, sizeof(buf), "%s-clock", which);
3539 		if (of_property_read_u32(np, buf, &val)) {
3540 			/* If both *-clock-name and *-clock are missing,
3541 			 * we want to tell people to use *-clock-name.
3542 			 */
3543 			pr_err("missing %s-clock-name property\n", buf);
3544 			return -EINVAL;
3545 		}
3546 		*out = val;
3547 	}
3548 	if (*out < QE_CLK_NONE || *out > QE_CLK24) {
3549 		pr_err("invalid %s property\n", buf);
3550 		return -EINVAL;
3551 	}
3552 	return 0;
3553 }
3554 
ucc_geth_probe(struct platform_device * ofdev)3555 static int ucc_geth_probe(struct platform_device* ofdev)
3556 {
3557 	struct device *device = &ofdev->dev;
3558 	struct device_node *np = ofdev->dev.of_node;
3559 	struct net_device *dev = NULL;
3560 	struct ucc_geth_private *ugeth = NULL;
3561 	struct ucc_geth_info *ug_info;
3562 	struct resource res;
3563 	int err, ucc_num, max_speed = 0;
3564 	const unsigned int *prop;
3565 	phy_interface_t phy_interface;
3566 	static const int enet_to_speed[] = {
3567 		SPEED_10, SPEED_10, SPEED_10,
3568 		SPEED_100, SPEED_100, SPEED_100,
3569 		SPEED_1000, SPEED_1000, SPEED_1000, SPEED_1000,
3570 	};
3571 	static const phy_interface_t enet_to_phy_interface[] = {
3572 		PHY_INTERFACE_MODE_MII, PHY_INTERFACE_MODE_RMII,
3573 		PHY_INTERFACE_MODE_RGMII, PHY_INTERFACE_MODE_MII,
3574 		PHY_INTERFACE_MODE_RMII, PHY_INTERFACE_MODE_RGMII,
3575 		PHY_INTERFACE_MODE_GMII, PHY_INTERFACE_MODE_RGMII,
3576 		PHY_INTERFACE_MODE_TBI, PHY_INTERFACE_MODE_RTBI,
3577 		PHY_INTERFACE_MODE_SGMII,
3578 	};
3579 
3580 	ugeth_vdbg("%s: IN", __func__);
3581 
3582 	prop = of_get_property(np, "cell-index", NULL);
3583 	if (!prop) {
3584 		prop = of_get_property(np, "device-id", NULL);
3585 		if (!prop)
3586 			return -ENODEV;
3587 	}
3588 
3589 	ucc_num = *prop - 1;
3590 	if ((ucc_num < 0) || (ucc_num > 7))
3591 		return -ENODEV;
3592 
3593 	ug_info = kmemdup(&ugeth_primary_info, sizeof(*ug_info), GFP_KERNEL);
3594 	if (ug_info == NULL)
3595 		return -ENOMEM;
3596 
3597 	ug_info->uf_info.ucc_num = ucc_num;
3598 
3599 	err = ucc_geth_parse_clock(np, "rx", &ug_info->uf_info.rx_clock);
3600 	if (err)
3601 		goto err_free_info;
3602 	err = ucc_geth_parse_clock(np, "tx", &ug_info->uf_info.tx_clock);
3603 	if (err)
3604 		goto err_free_info;
3605 
3606 	err = of_address_to_resource(np, 0, &res);
3607 	if (err)
3608 		goto err_free_info;
3609 
3610 	ug_info->uf_info.regs = res.start;
3611 	ug_info->uf_info.irq = irq_of_parse_and_map(np, 0);
3612 
3613 	ug_info->phy_node = of_parse_phandle(np, "phy-handle", 0);
3614 	if (!ug_info->phy_node && of_phy_is_fixed_link(np)) {
3615 		/*
3616 		 * In the case of a fixed PHY, the DT node associated
3617 		 * to the PHY is the Ethernet MAC DT node.
3618 		 */
3619 		err = of_phy_register_fixed_link(np);
3620 		if (err)
3621 			goto err_free_info;
3622 		ug_info->phy_node = of_node_get(np);
3623 	}
3624 
3625 	/* Find the TBI PHY node.  If it's not there, we don't support SGMII */
3626 	ug_info->tbi_node = of_parse_phandle(np, "tbi-handle", 0);
3627 
3628 	/* get the phy interface type, or default to MII */
3629 	prop = of_get_property(np, "phy-connection-type", NULL);
3630 	if (!prop) {
3631 		/* handle interface property present in old trees */
3632 		prop = of_get_property(ug_info->phy_node, "interface", NULL);
3633 		if (prop != NULL) {
3634 			phy_interface = enet_to_phy_interface[*prop];
3635 			max_speed = enet_to_speed[*prop];
3636 		} else
3637 			phy_interface = PHY_INTERFACE_MODE_MII;
3638 	} else {
3639 		phy_interface = to_phy_interface((const char *)prop);
3640 	}
3641 
3642 	/* get speed, or derive from PHY interface */
3643 	if (max_speed == 0)
3644 		switch (phy_interface) {
3645 		case PHY_INTERFACE_MODE_GMII:
3646 		case PHY_INTERFACE_MODE_RGMII:
3647 		case PHY_INTERFACE_MODE_RGMII_ID:
3648 		case PHY_INTERFACE_MODE_RGMII_RXID:
3649 		case PHY_INTERFACE_MODE_RGMII_TXID:
3650 		case PHY_INTERFACE_MODE_TBI:
3651 		case PHY_INTERFACE_MODE_RTBI:
3652 		case PHY_INTERFACE_MODE_SGMII:
3653 			max_speed = SPEED_1000;
3654 			break;
3655 		default:
3656 			max_speed = SPEED_100;
3657 			break;
3658 		}
3659 
3660 	if (max_speed == SPEED_1000) {
3661 		unsigned int snums = qe_get_num_of_snums();
3662 
3663 		/* configure muram FIFOs for gigabit operation */
3664 		ug_info->uf_info.urfs = UCC_GETH_URFS_GIGA_INIT;
3665 		ug_info->uf_info.urfet = UCC_GETH_URFET_GIGA_INIT;
3666 		ug_info->uf_info.urfset = UCC_GETH_URFSET_GIGA_INIT;
3667 		ug_info->uf_info.utfs = UCC_GETH_UTFS_GIGA_INIT;
3668 		ug_info->uf_info.utfet = UCC_GETH_UTFET_GIGA_INIT;
3669 		ug_info->uf_info.utftt = UCC_GETH_UTFTT_GIGA_INIT;
3670 		ug_info->numThreadsTx = UCC_GETH_NUM_OF_THREADS_4;
3671 
3672 		/* If QE's snum number is 46/76 which means we need to support
3673 		 * 4 UECs at 1000Base-T simultaneously, we need to allocate
3674 		 * more Threads to Rx.
3675 		 */
3676 		if ((snums == 76) || (snums == 46))
3677 			ug_info->numThreadsRx = UCC_GETH_NUM_OF_THREADS_6;
3678 		else
3679 			ug_info->numThreadsRx = UCC_GETH_NUM_OF_THREADS_4;
3680 	}
3681 
3682 	if (netif_msg_probe(&debug))
3683 		pr_info("UCC%1d at 0x%8llx (irq = %d)\n",
3684 			ug_info->uf_info.ucc_num + 1,
3685 			(u64)ug_info->uf_info.regs,
3686 			ug_info->uf_info.irq);
3687 
3688 	/* Create an ethernet device instance */
3689 	dev = alloc_etherdev(sizeof(*ugeth));
3690 
3691 	if (dev == NULL) {
3692 		err = -ENOMEM;
3693 		goto err_deregister_fixed_link;
3694 	}
3695 
3696 	ugeth = netdev_priv(dev);
3697 	spin_lock_init(&ugeth->lock);
3698 
3699 	/* Create CQs for hash tables */
3700 	INIT_LIST_HEAD(&ugeth->group_hash_q);
3701 	INIT_LIST_HEAD(&ugeth->ind_hash_q);
3702 
3703 	dev_set_drvdata(device, dev);
3704 
3705 	/* Set the dev->base_addr to the gfar reg region */
3706 	dev->base_addr = (unsigned long)(ug_info->uf_info.regs);
3707 
3708 	SET_NETDEV_DEV(dev, device);
3709 
3710 	/* Fill in the dev structure */
3711 	uec_set_ethtool_ops(dev);
3712 	dev->netdev_ops = &ucc_geth_netdev_ops;
3713 	dev->watchdog_timeo = TX_TIMEOUT;
3714 	INIT_WORK(&ugeth->timeout_work, ucc_geth_timeout_work);
3715 	netif_napi_add(dev, &ugeth->napi, ucc_geth_poll);
3716 	dev->mtu = 1500;
3717 	dev->max_mtu = 1518;
3718 
3719 	ugeth->msg_enable = netif_msg_init(debug.msg_enable, UGETH_MSG_DEFAULT);
3720 	ugeth->phy_interface = phy_interface;
3721 	ugeth->max_speed = max_speed;
3722 
3723 	/* Carrier starts down, phylib will bring it up */
3724 	netif_carrier_off(dev);
3725 
3726 	err = register_netdev(dev);
3727 	if (err) {
3728 		if (netif_msg_probe(ugeth))
3729 			pr_err("%s: Cannot register net device, aborting\n",
3730 			       dev->name);
3731 		goto err_free_netdev;
3732 	}
3733 
3734 	of_get_ethdev_address(np, dev);
3735 
3736 	ugeth->ug_info = ug_info;
3737 	ugeth->dev = device;
3738 	ugeth->ndev = dev;
3739 	ugeth->node = np;
3740 
3741 	return 0;
3742 
3743 err_free_netdev:
3744 	free_netdev(dev);
3745 err_deregister_fixed_link:
3746 	if (of_phy_is_fixed_link(np))
3747 		of_phy_deregister_fixed_link(np);
3748 	of_node_put(ug_info->tbi_node);
3749 	of_node_put(ug_info->phy_node);
3750 err_free_info:
3751 	kfree(ug_info);
3752 
3753 	return err;
3754 }
3755 
ucc_geth_remove(struct platform_device * ofdev)3756 static int ucc_geth_remove(struct platform_device* ofdev)
3757 {
3758 	struct net_device *dev = platform_get_drvdata(ofdev);
3759 	struct ucc_geth_private *ugeth = netdev_priv(dev);
3760 	struct device_node *np = ofdev->dev.of_node;
3761 
3762 	unregister_netdev(dev);
3763 	ucc_geth_memclean(ugeth);
3764 	if (of_phy_is_fixed_link(np))
3765 		of_phy_deregister_fixed_link(np);
3766 	of_node_put(ugeth->ug_info->tbi_node);
3767 	of_node_put(ugeth->ug_info->phy_node);
3768 	kfree(ugeth->ug_info);
3769 	free_netdev(dev);
3770 
3771 	return 0;
3772 }
3773 
3774 static const struct of_device_id ucc_geth_match[] = {
3775 	{
3776 		.type = "network",
3777 		.compatible = "ucc_geth",
3778 	},
3779 	{},
3780 };
3781 
3782 MODULE_DEVICE_TABLE(of, ucc_geth_match);
3783 
3784 static struct platform_driver ucc_geth_driver = {
3785 	.driver = {
3786 		.name = DRV_NAME,
3787 		.of_match_table = ucc_geth_match,
3788 	},
3789 	.probe		= ucc_geth_probe,
3790 	.remove		= ucc_geth_remove,
3791 	.suspend	= ucc_geth_suspend,
3792 	.resume		= ucc_geth_resume,
3793 };
3794 
ucc_geth_init(void)3795 static int __init ucc_geth_init(void)
3796 {
3797 	if (netif_msg_drv(&debug))
3798 		pr_info(DRV_DESC "\n");
3799 
3800 	return platform_driver_register(&ucc_geth_driver);
3801 }
3802 
ucc_geth_exit(void)3803 static void __exit ucc_geth_exit(void)
3804 {
3805 	platform_driver_unregister(&ucc_geth_driver);
3806 }
3807 
3808 module_init(ucc_geth_init);
3809 module_exit(ucc_geth_exit);
3810 
3811 MODULE_AUTHOR("Freescale Semiconductor, Inc");
3812 MODULE_DESCRIPTION(DRV_DESC);
3813 MODULE_LICENSE("GPL");
3814