xref: /openbmc/u-boot/drivers/ata/sata.c (revision b432b1eb)
1 /*
2  * Copyright (C) 2000-2005, DENX Software Engineering
3  *		Wolfgang Denk <wd@denx.de>
4  * Copyright (C) Procsys. All rights reserved.
5  *		Mushtaq Khan <mushtaq_k@procsys.com>
6  *			<mushtaqk_921@yahoo.co.in>
7  * Copyright (C) 2008 Freescale Semiconductor, Inc.
8  *		Dave Liu <daveliu@freescale.com>
9  *
10  * SPDX-License-Identifier:	GPL-2.0+
11  */
12 
13 #include <common.h>
14 #include <ahci.h>
15 #include <dm.h>
16 #include <sata.h>
17 
18 #ifndef CONFIG_AHCI
19 struct blk_desc sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
20 #endif
21 
22 int sata_reset(struct udevice *dev)
23 {
24 	struct ahci_ops *ops = ahci_get_ops(dev);
25 
26 	if (!ops->reset)
27 		return -ENOSYS;
28 
29 	return ops->reset(dev);
30 }
31 
32 int sata_dm_port_status(struct udevice *dev, int port)
33 {
34 	struct ahci_ops *ops = ahci_get_ops(dev);
35 
36 	if (!ops->port_status)
37 		return -ENOSYS;
38 
39 	return ops->port_status(dev, port);
40 }
41 
42 int sata_scan(struct udevice *dev)
43 {
44 	struct ahci_ops *ops = ahci_get_ops(dev);
45 
46 	if (!ops->scan)
47 		return -ENOSYS;
48 
49 	return ops->scan(dev);
50 }
51 
52 #ifndef CONFIG_AHCI
53 #ifdef CONFIG_PARTITIONS
54 struct blk_desc *sata_get_dev(int dev)
55 {
56 	return (dev < CONFIG_SYS_SATA_MAX_DEVICE) ? &sata_dev_desc[dev] : NULL;
57 }
58 #endif
59 #endif
60 
61 #ifdef CONFIG_BLK
62 static unsigned long sata_bread(struct udevice *dev, lbaint_t start,
63 				lbaint_t blkcnt, void *dst)
64 {
65 	return -ENOSYS;
66 }
67 
68 static unsigned long sata_bwrite(struct udevice *dev, lbaint_t start,
69 				 lbaint_t blkcnt, const void *buffer)
70 {
71 	return -ENOSYS;
72 }
73 #else
74 static unsigned long sata_bread(struct blk_desc *block_dev, lbaint_t start,
75 				lbaint_t blkcnt, void *dst)
76 {
77 	return sata_read(block_dev->devnum, start, blkcnt, dst);
78 }
79 
80 static unsigned long sata_bwrite(struct blk_desc *block_dev, lbaint_t start,
81 				 lbaint_t blkcnt, const void *buffer)
82 {
83 	return sata_write(block_dev->devnum, start, blkcnt, buffer);
84 }
85 #endif
86 
87 #ifndef CONFIG_AHCI
88 int __sata_initialize(void)
89 {
90 	int rc, ret = -1;
91 	int i;
92 
93 	for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++) {
94 		memset(&sata_dev_desc[i], 0, sizeof(struct blk_desc));
95 		sata_dev_desc[i].if_type = IF_TYPE_SATA;
96 		sata_dev_desc[i].devnum = i;
97 		sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
98 		sata_dev_desc[i].type = DEV_TYPE_HARDDISK;
99 		sata_dev_desc[i].lba = 0;
100 		sata_dev_desc[i].blksz = 512;
101 		sata_dev_desc[i].log2blksz = LOG2(sata_dev_desc[i].blksz);
102 #ifndef CONFIG_BLK
103 		sata_dev_desc[i].block_read = sata_bread;
104 		sata_dev_desc[i].block_write = sata_bwrite;
105 #endif
106 		rc = init_sata(i);
107 		if (!rc) {
108 			rc = scan_sata(i);
109 			if (!rc && sata_dev_desc[i].lba > 0 &&
110 			    sata_dev_desc[i].blksz > 0) {
111 				part_init(&sata_dev_desc[i]);
112 				ret = i;
113 			}
114 		}
115 	}
116 
117 	return ret;
118 }
119 int sata_initialize(void) __attribute__((weak, alias("__sata_initialize")));
120 
121 __weak int __sata_stop(void)
122 {
123 	int i, err = 0;
124 
125 	for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++)
126 		err |= reset_sata(i);
127 
128 	if (err)
129 		printf("Could not reset some SATA devices\n");
130 
131 	return err;
132 }
133 int sata_stop(void) __attribute__((weak, alias("__sata_stop")));
134 #endif
135 
136 #ifdef CONFIG_BLK
137 static const struct blk_ops sata_blk_ops = {
138 	.read	= sata_bread,
139 	.write	= sata_bwrite,
140 };
141 
142 U_BOOT_DRIVER(sata_blk) = {
143 	.name		= "sata_blk",
144 	.id		= UCLASS_BLK,
145 	.ops		= &sata_blk_ops,
146 };
147 #else
148 U_BOOT_LEGACY_BLK(sata) = {
149 	.if_typename	= "sata",
150 	.if_type	= IF_TYPE_SATA,
151 	.max_devs	= CONFIG_SYS_SATA_MAX_DEVICE,
152 	.desc		= sata_dev_desc,
153 };
154 #endif
155