* 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),
+};
projects / platform / kernel / u-boot.git / commitdiff