aboutsummaryrefslogtreecommitdiff
path: root/drivers/ata/libata.c
blob: 47e2c5c1cc402750e0854fd80dd2077a4804a62b (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
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2008 Freescale Semiconductor, Inc.
 *		Dave Liu <daveliu@freescale.com>
 *		port from the libata of linux kernel
 */

#include <common.h>
#include <compiler.h>
#include <libata.h>

u64 ata_id_n_sectors(u16 *id)
{
	if (ata_id_has_lba(id)) {
		if (ata_id_has_lba48(id))
			return ata_id_u64(id, ATA_ID_LBA48_SECTORS);
		else
			return ata_id_u32(id, ATA_ID_LBA_SECTORS);
	} else {
		return 0;
	}
}

u32 ata_dev_classify(u32 sig)
{
	u8 lbam, lbah;

	lbam = (sig >> 16) & 0xff;
	lbah = (sig >> 24) & 0xff;

	if (((lbam == 0) && (lbah == 0)) ||
		((lbam == 0x3c) && (lbah == 0xc3)))
		return ATA_DEV_ATA;

	if ((lbam == 0x14) && (lbah == 0xeb))
		return ATA_DEV_ATAPI;

	if ((lbam == 0x69) && (lbah == 0x96))
		return ATA_DEV_PMP;

	return ATA_DEV_UNKNOWN;
}

static void ata_id_string(const u16 *id, unsigned char *s,
			 unsigned int ofs, unsigned int len)
{
	unsigned int c;

	while (len > 0) {
		c = id[ofs] >> 8;
		*s = c;
		s++;

		c = id[ofs] & 0xff;
		*s = c;
		s++;

		ofs++;
		len -= 2;
	}
}

void ata_id_c_string(const u16 *id, unsigned char *s,
			 unsigned int ofs, unsigned int len)
{
	unsigned char *p;

	ata_id_string(id, s, ofs, len - 1);

	p = s + strnlen((char *)s, len - 1);
	while (p > s && p[-1] == ' ')
		p--;
	*p = '\0';
}

void ata_dump_id(u16 *id)
{
	unsigned char serial[ATA_ID_SERNO_LEN + 1];
	unsigned char firmware[ATA_ID_FW_REV_LEN + 1];
	unsigned char product[ATA_ID_PROD_LEN + 1];
	u64 n_sectors;

	/* Serial number */
	ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
	printf("S/N: %s\n\r", serial);

	/* Firmware version */
	ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
	printf("Firmware version: %s\n\r", firmware);

	/* Product model */
	ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
	printf("Product model number: %s\n\r", product);

	/* Total sectors of device  */
	n_sectors = ata_id_n_sectors(id);
	printf("Capablity: %lld sectors\n\r", n_sectors);

	printf ("id[49]: capabilities = 0x%04x\n"
		"id[53]: field valid = 0x%04x\n"
		"id[63]: mwdma = 0x%04x\n"
		"id[64]: pio = 0x%04x\n"
		"id[75]: queue depth = 0x%04x\n",
		id[49],
		id[53],
		id[63],
		id[64],
		id[75]);

	printf ("id[76]: sata capablity = 0x%04x\n"
		"id[78]: sata features supported = 0x%04x\n"
		"id[79]: sata features enable = 0x%04x\n",
		id[76],
		id[78],
		id[79]);

	printf ("id[80]: major version = 0x%04x\n"
		"id[81]: minor version = 0x%04x\n"
		"id[82]: command set supported 1 = 0x%04x\n"
		"id[83]: command set supported 2 = 0x%04x\n"
		"id[84]: command set extension = 0x%04x\n",
		id[80],
		id[81],
		id[82],
		id[83],
		id[84]);
	printf ("id[85]: command set enable 1 = 0x%04x\n"
		"id[86]: command set enable 2 = 0x%04x\n"
		"id[87]: command set default = 0x%04x\n"
		"id[88]: udma = 0x%04x\n"
		"id[93]: hardware reset result = 0x%04x\n",
		id[85],
		id[86],
		id[87],
		id[88],
		id[93]);
}

void ata_swap_buf_le16(u16 *buf, unsigned int buf_words)
{
	unsigned int i;

	for (i = 0; i < buf_words; i++)
		buf[i] = le16_to_cpu(buf[i]);
}