Merge git://git.denx.de/u-boot-mpc85xx
[oweals/u-boot.git] / common / sata.c
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 <dm.h>
15 #include <sata.h>
16
17 struct blk_desc sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
18
19 #ifdef CONFIG_PARTITIONS
20 struct blk_desc *sata_get_dev(int dev)
21 {
22         return (dev < CONFIG_SYS_SATA_MAX_DEVICE) ? &sata_dev_desc[dev] : NULL;
23 }
24 #endif
25
26 #ifdef CONFIG_BLK
27 static unsigned long sata_bread(struct udevice *dev, lbaint_t start,
28                                 lbaint_t blkcnt, void *dst)
29 {
30         return -ENOSYS;
31 }
32
33 static unsigned long sata_bwrite(struct udevice *dev, lbaint_t start,
34                                  lbaint_t blkcnt, const void *buffer)
35 {
36         return -ENOSYS;
37 }
38 #else
39 static unsigned long sata_bread(struct blk_desc *block_dev, lbaint_t start,
40                                 lbaint_t blkcnt, void *dst)
41 {
42         return sata_read(block_dev->devnum, start, blkcnt, dst);
43 }
44
45 static unsigned long sata_bwrite(struct blk_desc *block_dev, lbaint_t start,
46                                  lbaint_t blkcnt, const void *buffer)
47 {
48         return sata_write(block_dev->devnum, start, blkcnt, buffer);
49 }
50 #endif
51
52 int __sata_initialize(void)
53 {
54         int rc, ret = -1;
55         int i;
56
57         for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++) {
58                 memset(&sata_dev_desc[i], 0, sizeof(struct blk_desc));
59                 sata_dev_desc[i].if_type = IF_TYPE_SATA;
60                 sata_dev_desc[i].devnum = i;
61                 sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
62                 sata_dev_desc[i].type = DEV_TYPE_HARDDISK;
63                 sata_dev_desc[i].lba = 0;
64                 sata_dev_desc[i].blksz = 512;
65                 sata_dev_desc[i].log2blksz = LOG2(sata_dev_desc[i].blksz);
66 #ifndef CONFIG_BLK
67                 sata_dev_desc[i].block_read = sata_bread;
68                 sata_dev_desc[i].block_write = sata_bwrite;
69 #endif
70                 rc = init_sata(i);
71                 if (!rc) {
72                         rc = scan_sata(i);
73                         if (!rc && sata_dev_desc[i].lba > 0 &&
74                             sata_dev_desc[i].blksz > 0) {
75                                 part_init(&sata_dev_desc[i]);
76                                 ret = i;
77                         }
78                 }
79         }
80
81         return ret;
82 }
83 int sata_initialize(void) __attribute__((weak, alias("__sata_initialize")));
84
85 __weak int __sata_stop(void)
86 {
87         int i, err = 0;
88
89         for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++)
90                 err |= reset_sata(i);
91
92         if (err)
93                 printf("Could not reset some SATA devices\n");
94
95         return err;
96 }
97 int sata_stop(void) __attribute__((weak, alias("__sata_stop")));
98
99 #ifdef CONFIG_BLK
100 static const struct blk_ops sata_blk_ops = {
101         .read   = sata_bread,
102         .write  = sata_bwrite,
103 };
104
105 U_BOOT_DRIVER(sata_blk) = {
106         .name           = "sata_blk",
107         .id             = UCLASS_BLK,
108         .ops            = &sata_blk_ops,
109 };
110 #else
111 U_BOOT_LEGACY_BLK(sata) = {
112         .if_typename    = "sata",
113         .if_type        = IF_TYPE_SATA,
114         .max_devs       = CONFIG_SYS_SATA_MAX_DEVICE,
115         .desc           = sata_dev_desc,
116 };
117 #endif