[U-Boot] [PATCH 38/44] dm: sata: Add support for driver-model block devices

Simon Glass
2016-04-10T02:45:30Z

Add driver-model block-device support to the SATA implementation. This is
just a dummy implementation for now, since the SATA low-level API uses
numbered devices and that doesn't fit with driver model.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

common/sata.c | 31 ++++++++++++++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/common/sata.c b/common/sata.c
index 1d52fcb..88f08c9 100644
--- a/common/sata.c
+++ b/common/sata.c
@@ -11,6 +11,7 @@
*/

#include <common.h>
+#include <dm.h>
#include <sata.h>

struct blk_desc sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
@@ -22,6 +23,19 @@ struct blk_desc *sata_get_dev(int dev)
}
#endif

+#ifdef CONFIG_BLK
+static unsigned long sata_bread(struct udevice *dev, lbaint_t start,
+ lbaint_t blkcnt, void *dst)
+{
+ return -ENOSYS;
+}
+
+static unsigned long sata_bwrite(struct udevice *dev, lbaint_t start,
+ lbaint_t blkcnt, const void *buffer)
+{
+ return -ENOSYS;
+}
+#else
static unsigned long sata_bread(struct blk_desc *block_dev, lbaint_t start,
lbaint_t blkcnt, void *dst)
{
@@ -33,6 +47,7 @@ static unsigned long sata_bwrite(struct blk_desc *block_dev, lbaint_t start,
{
return sata_write(block_dev->devnum, start, blkcnt, buffer);
}
+#endif

int __sata_initialize(void)
{
@@ -48,9 +63,10 @@ int __sata_initialize(void)
sata_dev_desc[i].lba = 0;
sata_dev_desc[i].blksz = 512;
sata_dev_desc[i].log2blksz = LOG2(sata_dev_desc[i].blksz);
+#ifndef CONFIG_BLK
sata_dev_desc[i].block_read = sata_bread;
sata_dev_desc[i].block_write = sata_bwrite;
-
+#endif
rc = init_sata(i);
if (!rc) {
rc = scan_sata(i);
@@ -78,9 +94,22 @@ __weak int __sata_stop(void)
}
int sata_stop(void) __attribute__((weak, alias("__sata_stop")));

+#ifdef CONFIG_BLK
+static const struct blk_ops sata_blk_ops = {
+ .read = sata_bread,
+ .write = sata_bwrite,
+};
+
+U_BOOT_DRIVER(sata_blk) = {
+ .name = "sata_blk",
+ .id = UCLASS_BLK,
+ .ops = &sata_blk_ops,
+};
+#else
U_BOOT_LEGACY_BLK(sata) = {
.if_typename = "sata",
.if_type = IF_TYPE_SATA,
.max_devs = CONFIG_SYS_SATA_MAX_DEVICE,
.desc = sata_dev_desc,
};
+#endif
--
2.8.0.rc3.226.g39d4020