xref: /openbmc/u-boot/drivers/ata/sata.c (revision e8f80a5a)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2000-2005, DENX Software Engineering
4  *		Wolfgang Denk <wd@denx.de>
5  * Copyright (C) Procsys. All rights reserved.
6  *		Mushtaq Khan <mushtaq_k@procsys.com>
7  *			<mushtaqk_921@yahoo.co.in>
8  * Copyright (C) 2008 Freescale Semiconductor, Inc.
9  *		Dave Liu <daveliu@freescale.com>
10  */
11 
12 #include <common.h>
13 #include <ahci.h>
14 #include <dm.h>
15 #include <sata.h>
16 
17 #ifndef CONFIG_AHCI
18 struct blk_desc sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
19 #endif
20 
sata_reset(struct udevice * dev)21 int sata_reset(struct udevice *dev)
22 {
23 	struct ahci_ops *ops = ahci_get_ops(dev);
24 
25 	if (!ops->reset)
26 		return -ENOSYS;
27 
28 	return ops->reset(dev);
29 }
30 
sata_dm_port_status(struct udevice * dev,int port)31 int sata_dm_port_status(struct udevice *dev, int port)
32 {
33 	struct ahci_ops *ops = ahci_get_ops(dev);
34 
35 	if (!ops->port_status)
36 		return -ENOSYS;
37 
38 	return ops->port_status(dev, port);
39 }
40 
sata_scan(struct udevice * dev)41 int sata_scan(struct udevice *dev)
42 {
43 	struct ahci_ops *ops = ahci_get_ops(dev);
44 
45 	if (!ops->scan)
46 		return -ENOSYS;
47 
48 	return ops->scan(dev);
49 }
50 
51 #ifndef CONFIG_AHCI
52 #ifdef CONFIG_PARTITIONS
sata_get_dev(int dev)53 struct blk_desc *sata_get_dev(int dev)
54 {
55 	return (dev < CONFIG_SYS_SATA_MAX_DEVICE) ? &sata_dev_desc[dev] : NULL;
56 }
57 #endif
58 #endif
59 
60 #ifdef CONFIG_BLK
sata_bread(struct udevice * dev,lbaint_t start,lbaint_t blkcnt,void * dst)61 static unsigned long sata_bread(struct udevice *dev, lbaint_t start,
62 				lbaint_t blkcnt, void *dst)
63 {
64 	return -ENOSYS;
65 }
66 
sata_bwrite(struct udevice * dev,lbaint_t start,lbaint_t blkcnt,const void * buffer)67 static unsigned long sata_bwrite(struct udevice *dev, lbaint_t start,
68 				 lbaint_t blkcnt, const void *buffer)
69 {
70 	return -ENOSYS;
71 }
72 #else
sata_bread(struct blk_desc * block_dev,lbaint_t start,lbaint_t blkcnt,void * dst)73 static unsigned long sata_bread(struct blk_desc *block_dev, lbaint_t start,
74 				lbaint_t blkcnt, void *dst)
75 {
76 	return sata_read(block_dev->devnum, start, blkcnt, dst);
77 }
78 
sata_bwrite(struct blk_desc * block_dev,lbaint_t start,lbaint_t blkcnt,const void * buffer)79 static unsigned long sata_bwrite(struct blk_desc *block_dev, lbaint_t start,
80 				 lbaint_t blkcnt, const void *buffer)
81 {
82 	return sata_write(block_dev->devnum, start, blkcnt, buffer);
83 }
84 #endif
85 
86 #ifndef CONFIG_AHCI
__sata_initialize(void)87 int __sata_initialize(void)
88 {
89 	int rc, ret = -1;
90 	int i;
91 
92 	for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++) {
93 		memset(&sata_dev_desc[i], 0, sizeof(struct blk_desc));
94 		sata_dev_desc[i].if_type = IF_TYPE_SATA;
95 		sata_dev_desc[i].devnum = i;
96 		sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
97 		sata_dev_desc[i].type = DEV_TYPE_HARDDISK;
98 		sata_dev_desc[i].lba = 0;
99 		sata_dev_desc[i].blksz = 512;
100 		sata_dev_desc[i].log2blksz = LOG2(sata_dev_desc[i].blksz);
101 #ifndef CONFIG_BLK
102 		sata_dev_desc[i].block_read = sata_bread;
103 		sata_dev_desc[i].block_write = sata_bwrite;
104 #endif
105 		rc = init_sata(i);
106 		if (!rc) {
107 			rc = scan_sata(i);
108 			if (!rc && sata_dev_desc[i].lba > 0 &&
109 			    sata_dev_desc[i].blksz > 0) {
110 				part_init(&sata_dev_desc[i]);
111 				ret = i;
112 			}
113 		}
114 	}
115 
116 	return ret;
117 }
118 int sata_initialize(void) __attribute__((weak, alias("__sata_initialize")));
119 
__sata_stop(void)120 __weak int __sata_stop(void)
121 {
122 	int i, err = 0;
123 
124 	for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++)
125 		err |= reset_sata(i);
126 
127 	if (err)
128 		printf("Could not reset some SATA devices\n");
129 
130 	return err;
131 }
132 int sata_stop(void) __attribute__((weak, alias("__sata_stop")));
133 #endif
134 
135 #ifdef CONFIG_BLK
136 static const struct blk_ops sata_blk_ops = {
137 	.read	= sata_bread,
138 	.write	= sata_bwrite,
139 };
140 
141 U_BOOT_DRIVER(sata_blk) = {
142 	.name		= "sata_blk",
143 	.id		= UCLASS_BLK,
144 	.ops		= &sata_blk_ops,
145 };
146 #else
147 U_BOOT_LEGACY_BLK(sata) = {
148 	.if_typename	= "sata",
149 	.if_type	= IF_TYPE_SATA,
150 	.max_devs	= CONFIG_SYS_SATA_MAX_DEVICE,
151 	.desc		= sata_dev_desc,
152 };
153 #endif
154