init android origin source code

1 files changed, 95 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/include/scsi/scsi_eh.h b/ANDROID_3.4.5/include/scsi/scsi_eh.h
new file mode 100644
index 00000000..06a87908
--- /dev/null
+++ b/ANDROID_3.4.5/include/scsi/scsi_eh.h
@@ -0,0 +1,95 @@
+#ifndef _SCSI_SCSI_EH_H
+#define _SCSI_SCSI_EH_H
+
+#include <linux/scatterlist.h>
+
+#include <scsi/scsi_cmnd.h>
+struct scsi_device;
+struct Scsi_Host;
+
+/*
+ * This is a slightly modified SCSI sense "descriptor" format header.
+ * The addition is to allow the 0x70 and 0x71 response codes. The idea
+ * is to place the salient data from either "fixed" or "descriptor" sense
+ * format into one structure to ease application processing.
+ *
+ * The original sense buffer should be kept around for those cases
+ * in which more information is required (e.g. the LBA of a MEDIUM ERROR).
+ */
+struct scsi_sense_hdr {		/* See SPC-3 section 4.5 */
+	u8 response_code;	/* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */
+	u8 sense_key;
+	u8 asc;
+	u8 ascq;
+	u8 byte4;
+	u8 byte5;
+	u8 byte6;
+	u8 additional_length;	/* always 0 for fixed sense format */
+};
+
+static inline int scsi_sense_valid(struct scsi_sense_hdr *sshdr)
+{
+	if (!sshdr)
+		return 0;
+
+	return (sshdr->response_code & 0x70) == 0x70;
+}
+
+
+extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
+			       struct list_head *done_q);
+extern void scsi_eh_flush_done_q(struct list_head *done_q);
+extern void scsi_report_bus_reset(struct Scsi_Host *, int);
+extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
+extern int scsi_block_when_processing_errors(struct scsi_device *);
+extern int scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
+		struct scsi_sense_hdr *sshdr);
+extern int scsi_command_normalize_sense(struct scsi_cmnd *cmd,
+		struct scsi_sense_hdr *sshdr);
+
+static inline int scsi_sense_is_deferred(struct scsi_sense_hdr *sshdr)
+{
+	return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
+}
+
+extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
+				       int desc_type);
+
+extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
+				   u64 * info_out);
+
+extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
+
+/*
+ * Reset request from external source
+ */
+#define SCSI_TRY_RESET_DEVICE	1
+#define SCSI_TRY_RESET_BUS	2
+#define SCSI_TRY_RESET_HOST	3
+#define SCSI_TRY_RESET_TARGET	4
+
+extern int scsi_reset_provider(struct scsi_device *, int);
+
+struct scsi_eh_save {
+	/* saved state */
+	int result;
+	enum dma_data_direction data_direction;
+	unsigned underflow;
+	unsigned char cmd_len;
+	unsigned char prot_op;
+	unsigned char *cmnd;
+	struct scsi_data_buffer sdb;
+	struct request *next_rq;
+	/* new command support */
+	unsigned char eh_cmnd[BLK_MAX_CDB];
+	struct scatterlist sense_sgl;
+};
+
+extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
+		struct scsi_eh_save *ses, unsigned char *cmnd,
+		int cmnd_size, unsigned sense_bytes);
+
+extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
+		struct scsi_eh_save *ses);
+
+#endif /* _SCSI_SCSI_EH_H */