summaryrefslogtreecommitdiff
path: root/drivers/qe/qe.c
blob: be09a17297c99c6f2596f3eab75bf01e2c1c9b57 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
/*
 * Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
 *
 * Dave Liu <daveliu@freescale.com>
 * based on source code of Shlomi Gridish
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include "common.h"
#include <command.h>
#include "asm/errno.h"
#include "asm/io.h"
#include "linux/immap_qe.h"
#include "qe.h"

#define MPC85xx_DEVDISR_QE_DISABLE	0x1

qe_map_t		*qe_immr = NULL;
static qe_snum_t	snums[QE_NUM_OF_SNUM];

DECLARE_GLOBAL_DATA_PTR;

void qe_issue_cmd(uint cmd, uint sbc, u8 mcn, u32 cmd_data)
{
	u32 cecr;

	if (cmd == QE_RESET) {
		out_be32(&qe_immr->cp.cecr,(u32) (cmd | QE_CR_FLG));
	} else {
		out_be32(&qe_immr->cp.cecdr, cmd_data);
		out_be32(&qe_immr->cp.cecr, (sbc | QE_CR_FLG |
			 ((u32) mcn<<QE_CR_PROTOCOL_SHIFT) | cmd));
	}
	/* Wait for the QE_CR_FLG to clear */
	do {
		cecr = in_be32(&qe_immr->cp.cecr);
	} while (cecr & QE_CR_FLG);

	return;
}

uint qe_muram_alloc(uint size, uint align)
{
	uint	retloc;
	uint	align_mask, off;
	uint	savebase;

	align_mask = align - 1;
	savebase = gd->arch.mp_alloc_base;

	off = gd->arch.mp_alloc_base & align_mask;
	if (off != 0)
		gd->arch.mp_alloc_base += (align - off);

	if ((off = size & align_mask) != 0)
		size += (align - off);

	if ((gd->arch.mp_alloc_base + size) >= gd->arch.mp_alloc_top) {
		gd->arch.mp_alloc_base = savebase;
		printf("%s: ran out of ram.\n",  __FUNCTION__);
	}

	retloc = gd->arch.mp_alloc_base;
	gd->arch.mp_alloc_base += size;

	memset((void *)&qe_immr->muram[retloc], 0, size);

	__asm__ __volatile__("sync");

	return retloc;
}

void *qe_muram_addr(uint offset)
{
	return (void *)&qe_immr->muram[offset];
}

static void qe_sdma_init(void)
{
	volatile sdma_t	*p;
	uint		sdma_buffer_base;

	p = (volatile sdma_t *)&qe_immr->sdma;

	/* All of DMA transaction in bus 1 */
	out_be32(&p->sdaqr, 0);
	out_be32(&p->sdaqmr, 0);

	/* Allocate 2KB temporary buffer for sdma */
	sdma_buffer_base = qe_muram_alloc(2048, 4096);
	out_be32(&p->sdwbcr, sdma_buffer_base & QE_SDEBCR_BA_MASK);

	/* Clear sdma status */
	out_be32(&p->sdsr, 0x03000000);

	/* Enable global mode on bus 1, and 2KB buffer size */
	out_be32(&p->sdmr, QE_SDMR_GLB_1_MSK | (0x3 << QE_SDMR_CEN_SHIFT));
}

/* This table is a list of the serial numbers of the Threads, taken from the
 * "SNUM Table" chart in the QE Reference Manual. The order is not important,
 * we just need to know what the SNUMs are for the threads.
 */
static u8 thread_snum[] = {
/* Evthreads 16-29 are not supported in MPC8309 */
#if !defined(CONFIG_MPC8309)
	0x04, 0x05, 0x0c, 0x0d,
	0x14, 0x15, 0x1c, 0x1d,
	0x24, 0x25, 0x2c, 0x2d,
	0x34, 0x35,
#endif
	0x88, 0x89, 0x98, 0x99,
	0xa8, 0xa9, 0xb8, 0xb9,
	0xc8, 0xc9, 0xd8, 0xd9,
	0xe8, 0xe9, 0x08, 0x09,
	0x18, 0x19, 0x28, 0x29,
	0x38, 0x39, 0x48, 0x49,
	0x58, 0x59, 0x68, 0x69,
	0x78, 0x79, 0x80, 0x81
};

static void qe_snums_init(void)
{
	int	i;

	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
		snums[i].state = QE_SNUM_STATE_FREE;
		snums[i].num   = thread_snum[i];
	}
}

int qe_get_snum(void)
{
	int	snum = -EBUSY;
	int	i;

	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
		if (snums[i].state == QE_SNUM_STATE_FREE) {
			snums[i].state = QE_SNUM_STATE_USED;
			snum = snums[i].num;
			break;
		}
	}

	return snum;
}

void qe_put_snum(u8 snum)
{
	int	i;

	for (i = 0; i < QE_NUM_OF_SNUM; i++) {
		if (snums[i].num == snum) {
			snums[i].state = QE_SNUM_STATE_FREE;
			break;
		}
	}
}

void qe_init(uint qe_base)
{
	/* Init the QE IMMR base */
	qe_immr = (qe_map_t *)qe_base;

#ifdef CONFIG_SYS_QE_FMAN_FW_IN_NOR
	/*
	 * Upload microcode to IRAM for those SOCs which do not have ROM in QE.
	 */
	qe_upload_firmware((const void *)CONFIG_SYS_QE_FW_ADDR);

	/* enable the microcode in IRAM */
	out_be32(&qe_immr->iram.iready,QE_IRAM_READY);
#endif

	gd->arch.mp_alloc_base = QE_DATAONLY_BASE;
	gd->arch.mp_alloc_top = gd->arch.mp_alloc_base + QE_DATAONLY_SIZE;

	qe_sdma_init();
	qe_snums_init();
}

void qe_reset(void)
{
	qe_issue_cmd(QE_RESET, QE_CR_SUBBLOCK_INVALID,
			 (u8) QE_CR_PROTOCOL_UNSPECIFIED, 0);
}

void qe_assign_page(uint snum, uint para_ram_base)
{
	u32	cecr;

	out_be32(&qe_immr->cp.cecdr, para_ram_base);
	out_be32(&qe_immr->cp.cecr, ((u32) snum<<QE_CR_ASSIGN_PAGE_SNUM_SHIFT)
					 | QE_CR_FLG | QE_ASSIGN_PAGE);

	/* Wait for the QE_CR_FLG to clear */
	do {
		cecr = in_be32(&qe_immr->cp.cecr);
	} while (cecr & QE_CR_FLG );

	return;
}

/*
 * brg: 0~15 as BRG1~BRG16
   rate: baud rate
 * BRG input clock comes from the BRGCLK (internal clock generated from
   the QE clock, it is one-half of the QE clock), If need the clock source
   from CLKn pin, we have te change the function.
 */

#define BRG_CLK		(gd->arch.brg_clk)

int qe_set_brg(uint brg, uint rate)
{
	volatile uint	*bp;
	u32		divisor;
	int		div16 = 0;

	if (brg >= QE_NUM_OF_BRGS)
		return -EINVAL;
	bp = (uint *)&qe_immr->brg.brgc1;
	bp += brg;

	divisor = (BRG_CLK / rate);
	if (divisor > QE_BRGC_DIVISOR_MAX + 1) {
		div16 = 1;
		divisor /= 16;
	}

	*bp = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) | QE_BRGC_ENABLE;
	__asm__ __volatile__("sync");

	if (div16) {
		*bp |= QE_BRGC_DIV16;
		__asm__ __volatile__("sync");
	}

	return 0;
}

/* Set ethernet MII clock master
*/
int qe_set_mii_clk_src(int ucc_num)
{
	u32	cmxgcr;

	/* check if the UCC number is in range. */
	if ((ucc_num > UCC_MAX_NUM - 1) || (ucc_num < 0)) {
		printf("%s: ucc num not in ranges\n", __FUNCTION__);
		return -EINVAL;
	}

	cmxgcr = in_be32(&qe_immr->qmx.cmxgcr);
	cmxgcr &= ~QE_CMXGCR_MII_ENET_MNG_MASK;
	cmxgcr |= (ucc_num <<QE_CMXGCR_MII_ENET_MNG_SHIFT);
	out_be32(&qe_immr->qmx.cmxgcr, cmxgcr);

	return 0;
}

/* Firmware information stored here for qe_get_firmware_info() */
static struct qe_firmware_info qe_firmware_info;

/*
 * Set to 1 if QE firmware has been uploaded, and therefore
 * qe_firmware_info contains valid data.
 */
static int qe_firmware_uploaded;

/*
 * Upload a QE microcode
 *
 * This function is a worker function for qe_upload_firmware().  It does
 * the actual uploading of the microcode.
 */
static void qe_upload_microcode(const void *base,
	const struct qe_microcode *ucode)
{
	const u32 *code = base + be32_to_cpu(ucode->code_offset);
	unsigned int i;

	if (ucode->major || ucode->minor || ucode->revision)
		printf("QE: uploading microcode '%s' version %u.%u.%u\n",
			ucode->id, ucode->major, ucode->minor, ucode->revision);
	else
		printf("QE: uploading microcode '%s'\n", ucode->id);

	/* Use auto-increment */
	out_be32(&qe_immr->iram.iadd, be32_to_cpu(ucode->iram_offset) |
		QE_IRAM_IADD_AIE | QE_IRAM_IADD_BADDR);

	for (i = 0; i < be32_to_cpu(ucode->count); i++)
		out_be32(&qe_immr->iram.idata, be32_to_cpu(code[i]));
}

/*
 * Upload a microcode to the I-RAM at a specific address.
 *
 * See docs/README.qe_firmware for information on QE microcode uploading.
 *
 * Currently, only version 1 is supported, so the 'version' field must be
 * set to 1.
 *
 * The SOC model and revision are not validated, they are only displayed for
 * informational purposes.
 *
 * 'calc_size' is the calculated size, in bytes, of the firmware structure and
 * all of the microcode structures, minus the CRC.
 *
 * 'length' is the size that the structure says it is, including the CRC.
 */
int qe_upload_firmware(const struct qe_firmware *firmware)
{
	unsigned int i;
	unsigned int j;
	u32 crc;
	size_t calc_size = sizeof(struct qe_firmware);
	size_t length;
	const struct qe_header *hdr;
#ifdef CONFIG_DEEP_SLEEP
	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#endif
	if (!firmware) {
		printf("Invalid address\n");
		return -EINVAL;
	}

	hdr = &firmware->header;
	length = be32_to_cpu(hdr->length);

	/* Check the magic */
	if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') ||
	    (hdr->magic[2] != 'F')) {
		printf("Not a microcode\n");
#ifdef CONFIG_DEEP_SLEEP
		setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_QE_DISABLE);
#endif
		return -EPERM;
	}

	/* Check the version */
	if (hdr->version != 1) {
		printf("Unsupported version\n");
		return -EPERM;
	}

	/* Validate some of the fields */
	if ((firmware->count < 1) || (firmware->count > MAX_QE_RISC)) {
		printf("Invalid data\n");
		return -EINVAL;
	}

	/* Validate the length and check if there's a CRC */
	calc_size += (firmware->count - 1) * sizeof(struct qe_microcode);

	for (i = 0; i < firmware->count; i++)
		/*
		 * For situations where the second RISC uses the same microcode
		 * as the first, the 'code_offset' and 'count' fields will be
		 * zero, so it's okay to add those.
		 */
		calc_size += sizeof(u32) *
			be32_to_cpu(firmware->microcode[i].count);

	/* Validate the length */
	if (length != calc_size + sizeof(u32)) {
		printf("Invalid length\n");
		return -EPERM;
	}

	/*
	 * Validate the CRC.  We would normally call crc32_no_comp(), but that
	 * function isn't available unless you turn on JFFS support.
	 */
	crc = be32_to_cpu(*(u32 *)((void *)firmware + calc_size));
	if (crc != (crc32(-1, (const void *) firmware, calc_size) ^ -1)) {
		printf("Firmware CRC is invalid\n");
		return -EIO;
	}

	/*
	 * If the microcode calls for it, split the I-RAM.
	 */
	if (!firmware->split) {
		out_be16(&qe_immr->cp.cercr,
			in_be16(&qe_immr->cp.cercr) | QE_CP_CERCR_CIR);
	}

	if (firmware->soc.model)
		printf("Firmware '%s' for %u V%u.%u\n",
			firmware->id, be16_to_cpu(firmware->soc.model),
			firmware->soc.major, firmware->soc.minor);
	else
		printf("Firmware '%s'\n", firmware->id);

	/*
	 * The QE only supports one microcode per RISC, so clear out all the
	 * saved microcode information and put in the new.
	 */
	memset(&qe_firmware_info, 0, sizeof(qe_firmware_info));
	strcpy(qe_firmware_info.id, (char *)firmware->id);
	qe_firmware_info.extended_modes = firmware->extended_modes;
	memcpy(qe_firmware_info.vtraps, firmware->vtraps,
		sizeof(firmware->vtraps));
	qe_firmware_uploaded = 1;

	/* Loop through each microcode. */
	for (i = 0; i < firmware->count; i++) {
		const struct qe_microcode *ucode = &firmware->microcode[i];

		/* Upload a microcode if it's present */
		if (ucode->code_offset)
			qe_upload_microcode(firmware, ucode);

		/* Program the traps for this processor */
		for (j = 0; j < 16; j++) {
			u32 trap = be32_to_cpu(ucode->traps[j]);

			if (trap)
				out_be32(&qe_immr->rsp[i].tibcr[j], trap);
		}

		/* Enable traps */
		out_be32(&qe_immr->rsp[i].eccr, be32_to_cpu(ucode->eccr));
	}

	return 0;
}

struct qe_firmware_info *qe_get_firmware_info(void)
{
	return qe_firmware_uploaded ? &qe_firmware_info : NULL;
}

static int qe_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	ulong addr;

	if (argc < 3)
		return cmd_usage(cmdtp);

	if (strcmp(argv[1], "fw") == 0) {
		addr = simple_strtoul(argv[2], NULL, 16);

		if (!addr) {
			printf("Invalid address\n");
			return -EINVAL;
		}

		/*
		 * If a length was supplied, compare that with the 'length'
		 * field.
		 */

		if (argc > 3) {
			ulong length = simple_strtoul(argv[3], NULL, 16);
			struct qe_firmware *firmware = (void *) addr;

			if (length != be32_to_cpu(firmware->header.length)) {
				printf("Length mismatch\n");
				return -EINVAL;
			}
		}

		return qe_upload_firmware((const struct qe_firmware *) addr);
	}

	return cmd_usage(cmdtp);
}

U_BOOT_CMD(
	qe, 4, 0, qe_cmd,
	"QUICC Engine commands",
	"fw <addr> [<length>] - Upload firmware binary at address <addr> to "
		"the QE,\n"
	"\twith optional length <length> verification."
);