At present sandbox is producing a warning about SCSI migration. Drop the
legacy code and replace it with a new implementation.

Also drop the SATA command, which does not work with driver model.

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

 arch/Kconfig                       |   1 -
 configs/sandbox64_defconfig        |   1 +
 configs/sandbox_defconfig          |   1 +
 configs/sandbox_flattree_defconfig |   1 +
 configs/sandbox_noinst_defconfig   |   1 +
 configs/sandbox_spl_defconfig      |   1 +
 configs/sandbox_vpl_defconfig      |   1 +
 drivers/scsi/sandbox_scsi.c        | 132 ++++++++++++++++++++++++++++-
 8 files changed, 135 insertions(+), 4 deletions(-)

diff --git a/arch/Kconfig b/arch/Kconfig
index 994fd3b7f86..1ffd77c0f4f 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -166,7 +166,6 @@ config SANDBOX
        imply CMD_IO
        imply CMD_IOTRACE
        imply CMD_LZMADEC
-       imply CMD_SATA
        imply CMD_SF
        imply CMD_SF_TEST
        imply CRC32_VERIFY
diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index fdbb6eb4b85..deefc99d8d1 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -205,6 +205,7 @@ CONFIG_SANDBOX_RESET=y
 CONFIG_DM_RTC=y
 CONFIG_RTC_RV8803=y
 CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
 CONFIG_SCSI_AHCI_PLAT=y
 CONFIG_SYS_SCSI_MAX_SCSI_ID=8
 CONFIG_SYS_SCSI_MAX_LUN=4
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 3e9bb9e628d..c7026da1bbf 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -263,6 +263,7 @@ CONFIG_RESET_SCMI=y
 CONFIG_DM_RTC=y
 CONFIG_RTC_RV8803=y
 CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
 CONFIG_SCSI_AHCI_PLAT=y
 CONFIG_SYS_SCSI_MAX_SCSI_ID=8
 CONFIG_SYS_SCSI_MAX_LUN=4
diff --git a/configs/sandbox_flattree_defconfig 
b/configs/sandbox_flattree_defconfig
index 95ff77d8824..226a36f0fe9 100644
--- a/configs/sandbox_flattree_defconfig
+++ b/configs/sandbox_flattree_defconfig
@@ -176,6 +176,7 @@ CONFIG_DM_RESET=y
 CONFIG_SANDBOX_RESET=y
 CONFIG_DM_RTC=y
 CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
 CONFIG_SCSI_AHCI_PLAT=y
 CONFIG_SYS_SCSI_MAX_SCSI_ID=8
 CONFIG_SYS_SCSI_MAX_LUN=4
diff --git a/configs/sandbox_noinst_defconfig b/configs/sandbox_noinst_defconfig
index dcae8fa2582..e4bf05df1d8 100644
--- a/configs/sandbox_noinst_defconfig
+++ b/configs/sandbox_noinst_defconfig
@@ -202,6 +202,7 @@ CONFIG_SANDBOX_RESET=y
 CONFIG_DM_RTC=y
 CONFIG_SPL_DM_RTC=y
 CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
 CONFIG_SCSI_AHCI_PLAT=y
 CONFIG_SYS_SCSI_MAX_SCSI_ID=8
 CONFIG_SYS_SCSI_MAX_LUN=4
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index 9454e942315..fcaee771055 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -205,6 +205,7 @@ CONFIG_SANDBOX_RESET=y
 CONFIG_DM_RTC=y
 CONFIG_SPL_DM_RTC=y
 CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
 CONFIG_SCSI_AHCI_PLAT=y
 CONFIG_SYS_SCSI_MAX_SCSI_ID=8
 CONFIG_SYS_SCSI_MAX_LUN=4
diff --git a/configs/sandbox_vpl_defconfig b/configs/sandbox_vpl_defconfig
index f5ef760b5d5..593e72aa6a7 100644
--- a/configs/sandbox_vpl_defconfig
+++ b/configs/sandbox_vpl_defconfig
@@ -211,6 +211,7 @@ CONFIG_DM_RTC=y
 CONFIG_SPL_DM_RTC=y
 CONFIG_TPL_DM_RTC=y
 CONFIG_SCSI=y
+CONFIG_DM_SCSI=y
 CONFIG_SCSI_AHCI_PLAT=y
 CONFIG_SYS_SCSI_MAX_SCSI_ID=8
 CONFIG_SYS_SCSI_MAX_LUN=4
diff --git a/drivers/scsi/sandbox_scsi.c b/drivers/scsi/sandbox_scsi.c
index 39b969a4b2f..a7ac33cb1c4 100644
--- a/drivers/scsi/sandbox_scsi.c
+++ b/drivers/scsi/sandbox_scsi.c
@@ -7,19 +7,145 @@
  * that CONFIG_SCSI can be enabled for sandbox.
  */
 
+#define LOG_CATEGORY UCLASS_SCSI
+
 #include <common.h>
+#include <dm.h>
+#include <os.h>
+#include <malloc.h>
 #include <scsi.h>
+#include <scsi_emul.h>
+
+enum {
+       SANDBOX_SCSI_BLOCK_LEN          = 512,
+       SANDBOX_SCSI_BUF_SIZE           = 512,
+};
+
+/**
+ * struct sandbox_scsi_priv
+ *
+ * @eminfo: emulator state
+ * @pathanme: Path to the backing file, e.g. 'scsi.img'
+ * @fd: File descriptor of backing file
+ */
+struct sandbox_scsi_priv {
+       struct scsi_emul_info eminfo;
+       const char *pathname;
+       int fd;
+};
 
-int scsi_bus_reset(struct udevice *dev)
+static int sandbox_scsi_exec(struct udevice *dev, struct scsi_cmd *req)
 {
+       struct sandbox_scsi_priv *priv = dev_get_priv(dev);
+       struct scsi_emul_info *info = &priv->eminfo;
+       int ret;
+
+       if (req->lun || req->target)
+               return -EIO;
+       ret = sb_scsi_emul_command(info, req, req->cmdlen);
+       if (ret < 0) {
+               log_debug("SCSI command 0x%02x ret errno %d\n", req->cmd[0],
+                         ret);
+               return ret;
+       } else if (ret == SCSI_EMUL_DO_READ && priv->fd != -1) {
+               long bytes_read;
+
+               log_debug("read %x %x\n", info->seek_block, info->read_len);
+               os_lseek(priv->fd, info->seek_block * info->block_size,
+                        OS_SEEK_SET);
+               bytes_read = os_read(priv->fd, req->pdata, info->buff_used);
+               if (bytes_read < 0)
+                       return bytes_read;
+               if (bytes_read != info->buff_used)
+                       return -EIO;
+       } else if (!ret) {
+               req->pdata = info->buff;
+               info->phase = SCSIPH_STATUS;
+               log_debug("sending buf\n");
+       } else {
+               log_debug("error\n");
+               return -EIO;
+       }
+
        return 0;
 }
 
-void scsi_init(void)
+static int sandbox_scsi_bus_reset(struct udevice *dev)
 {
+       /* Not implemented */
+
+       return 0;
 }
 
-int scsi_exec(struct udevice *dev, struct scsi_cmd *pccb)
+static int sandbox_scsi_of_to_plat(struct udevice *dev)
 {
+       struct sandbox_scsi_priv *priv = dev_get_priv(dev);
+
+       priv->pathname = dev_read_string(dev, "sandbox,filepath");
+
        return 0;
 }
+
+static int sandbox_scsi_probe(struct udevice *dev)
+{
+       struct scsi_plat *scsi_plat = dev_get_uclass_plat(dev);
+       struct sandbox_scsi_priv *priv = dev_get_priv(dev);
+       struct scsi_emul_info *info = &priv->eminfo;
+       int ret;
+
+       scsi_plat->max_id = 2;
+       scsi_plat->max_lun = 3;
+       scsi_plat->max_bytes_per_req = 1 << 20;
+
+       info->vendor = "SANDBOX";
+       info->product = "FAKE DISK";
+       info->buff = malloc(SANDBOX_SCSI_BUF_SIZE);
+       if (!info->buff)
+               return log_ret(-ENOMEM);
+       info->block_size = SANDBOX_SCSI_BLOCK_LEN;
+
+       if (priv->pathname) {
+               priv->fd = os_open(priv->pathname, OS_O_RDONLY);
+               if (priv->fd != -1) {
+                       ret = os_get_filesize(priv->pathname, &info->file_size);
+                       if (ret)
+                               return log_msg_ret("sz", ret);
+               }
+       } else {
+               priv->fd = -1;
+       }
+       log_debug("filename: %s, fd %d\n", priv->pathname, priv->fd);
+
+       return 0;
+}
+
+static int sandbox_scsi_remove(struct udevice *dev)
+{
+       struct sandbox_scsi_priv *priv = dev_get_priv(dev);
+       struct scsi_emul_info *info = &priv->eminfo;
+
+       free(info->buff);
+
+       return 0;
+}
+
+struct scsi_ops sandbox_scsi_ops = {
+       .exec           = sandbox_scsi_exec,
+       .bus_reset      = sandbox_scsi_bus_reset,
+};
+
+static const struct udevice_id sanbox_scsi_ids[] = {
+       { .compatible = "sandbox,scsi" },
+       { }
+};
+
+U_BOOT_DRIVER(sandbox_scsi) = {
+       .name           = "sandbox_scsi",
+       .id             = UCLASS_SCSI,
+       .ops            = &sandbox_scsi_ops,
+       .of_match       = sanbox_scsi_ids,
+       .of_to_plat     = sandbox_scsi_of_to_plat,
+       .probe          = sandbox_scsi_probe,
+       .remove         = sandbox_scsi_remove,
+       .priv_auto      = sizeof(struct sandbox_scsi_priv),
+};
-- 
2.37.2.672.g94769d06f0-goog

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