1 files changed, 111 insertions, 0 deletions
diff --git a/include/grub/scsi.h b/include/grub/scsi.h
new file mode 100644
index 0000000..a919a7c
--- /dev/null
+++ b/include/grub/scsi.h
@@ -0,0 +1,111 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2008  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef	GRUB_SCSI_H
+#define	GRUB_SCSI_H	1
+
+#include <grub/disk.h>
+
+typedef struct grub_scsi_dev *grub_scsi_dev_t;
+
+void grub_scsi_dev_register (grub_scsi_dev_t dev);
+void grub_scsi_dev_unregister (grub_scsi_dev_t dev);
+
+struct grub_scsi;
+
+enum
+  {
+    GRUB_SCSI_SUBSYSTEM_USBMS,
+    GRUB_SCSI_SUBSYSTEM_PATA,
+    GRUB_SCSI_SUBSYSTEM_AHCI,
+    GRUB_SCSI_NUM_SUBSYSTEMS
+  };
+
+extern const char grub_scsi_names[GRUB_SCSI_NUM_SUBSYSTEMS][5];
+
+#define GRUB_SCSI_ID_SUBSYSTEM_SHIFT 24
+#define GRUB_SCSI_ID_BUS_SHIFT 8
+#define GRUB_SCSI_ID_LUN_SHIFT 0
+
+static inline grub_uint32_t
+grub_make_scsi_id (int subsystem, int bus, int lun)
+{
+  return (subsystem << GRUB_SCSI_ID_SUBSYSTEM_SHIFT)
+    | (bus << GRUB_SCSI_ID_BUS_SHIFT) | (lun << GRUB_SCSI_ID_LUN_SHIFT);
+}
+
+typedef int (*grub_scsi_dev_iterate_hook_t) (int id, int bus, int luns,
+					     void *data);
+
+struct grub_scsi_dev
+{
+  /* Call HOOK with each device name, until HOOK returns non-zero.  */
+  int (*iterate) (grub_scsi_dev_iterate_hook_t hook, void *hook_data,
+		  grub_disk_pull_t pull);
+
+  /* Open the device named NAME, and set up SCSI.  */
+  grub_err_t (*open) (int id, int bus, struct grub_scsi *scsi);
+
+  /* Close the scsi device SCSI.  */
+  void (*close) (struct grub_scsi *scsi);
+
+  /* Read SIZE bytes from the device SCSI into BUF after sending the
+     command CMD of size CMDSIZE.  */
+  grub_err_t (*read) (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
+		      grub_size_t size, char *buf);
+
+  /* Write SIZE  bytes from BUF to  the device SCSI  after sending the
+     command CMD of size CMDSIZE.  */
+  grub_err_t (*write) (struct grub_scsi *scsi, grub_size_t cmdsize, char *cmd,
+		       grub_size_t size, const char *buf);
+
+  /* The next scsi device.  */
+  struct grub_scsi_dev *next;
+};
+
+struct grub_scsi
+{
+  /* The underlying scsi device.  */
+  grub_scsi_dev_t dev;
+
+  /* Type of SCSI device.  XXX: Make enum.  */
+  grub_uint8_t devtype;
+
+  int bus;
+
+  /* Number of LUNs.  */
+  int luns;
+
+  /* LUN for this `struct grub_scsi'.  */
+  int lun;
+
+  /* Set to 0 when not removable, 1 when removable.  */
+  int removable;
+
+  /* Size of the device in blocks - 1.  */
+  grub_uint64_t last_block;
+
+  /* Size of one block.  */
+  grub_uint32_t blocksize;
+
+  /* Device-specific data.  */
+  void *data;
+};
+typedef struct grub_scsi *grub_scsi_t;
+
+#endif /* GRUB_SCSI_H */