drivers/ata/sata.c

   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 <blk.h>
  15 #include <dm.h>
  16 #include <part.h>
  17 #include <sata.h>
  18
  19 #ifndef CONFIG_AHCI
  20 struct blk_desc sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
  21 #endif
  22
  23 int sata_reset(struct udevice *dev)
  24 {
  25         struct ahci_ops *ops = ahci_get_ops(dev);
  26
  27         if (!ops->reset)
  28                 return -ENOSYS;
  29
  30         return ops->reset(dev);
  31 }
  32
  33 int sata_dm_port_status(struct udevice *dev, int port)
  34 {
  35         struct ahci_ops *ops = ahci_get_ops(dev);
  36
  37         if (!ops->port_status)
  38                 return -ENOSYS;
  39
  40         return ops->port_status(dev, port);
  41 }
  42
  43 int sata_scan(struct udevice *dev)
  44 {
  45         struct ahci_ops *ops = ahci_get_ops(dev);
  46
  47         if (!ops->scan)
  48                 return -ENOSYS;
  49
  50         return ops->scan(dev);
  51 }
  52
  53 #ifndef CONFIG_AHCI
  54 #ifdef CONFIG_PARTITIONS
  55 struct blk_desc *sata_get_dev(int dev)
  56 {
  57         return (dev < CONFIG_SYS_SATA_MAX_DEVICE) ? &sata_dev_desc[dev] : NULL;
  58 }
  59 #endif
  60 #endif
  61
  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
  74 #ifndef CONFIG_AHCI
  75 int __sata_initialize(void)
  76 {
  77         int rc, ret = -1;
  78         int i;
  79
  80         for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++) {
  81                 memset(&sata_dev_desc[i], 0, sizeof(struct blk_desc));
  82                 sata_dev_desc[i].if_type = IF_TYPE_SATA;
  83                 sata_dev_desc[i].devnum = i;
  84                 sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
  85                 sata_dev_desc[i].type = DEV_TYPE_HARDDISK;
  86                 sata_dev_desc[i].lba = 0;
  87                 sata_dev_desc[i].blksz = 512;
  88                 sata_dev_desc[i].log2blksz = LOG2(sata_dev_desc[i].blksz);
  89                 rc = init_sata(i);
  90                 if (!rc) {
  91                         rc = scan_sata(i);
  92                         if (!rc && sata_dev_desc[i].lba > 0 &&
  93                             sata_dev_desc[i].blksz > 0) {
  94                                 part_init(&sata_dev_desc[i]);
  95                                 ret = i;
  96                         }
  97                 }
  98         }
  99
 100         return ret;
 101 }
 102 int sata_initialize(void) __attribute__((weak, alias("__sata_initialize")));
 103
 104 __weak int __sata_stop(void)
 105 {
 106         int i, err = 0;
 107
 108         for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++)
 109                 err |= reset_sata(i);
 110
 111         if (err)
 112                 printf("Could not reset some SATA devices\n");
 113
 114         return err;
 115 }
 116 int sata_stop(void) __attribute__((weak, alias("__sata_stop")));
 117 #endif
 118
 119 static const struct blk_ops sata_blk_ops = {
 120         .read   = sata_bread,
 121         .write  = sata_bwrite,
 122 };
 123
 124 U_BOOT_DRIVER(sata_blk) = {
 125         .name           = "sata_blk",
 126         .id             = UCLASS_BLK,
 127         .ops            = &sata_blk_ops,
 128 };