This is a driver for the Mylex DAC960 family of integrated RAID

controllers.  It currently supports the P, PL, PD and PU variants,
with more to be supported shortly.

1 files changed, 188 insertions, 0 deletions

diff --git a/sys/dev/mlx/mlxreg.h b/sys/dev/mlx/mlxreg.h
new file mode 100644
index 0000000..7130223
--- /dev/null
+++ b/sys/dev/mlx/mlxreg.h
@@ -0,0 +1,188 @@
+/*-
+ * Copyright (c) 1999 Michael Smith
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	$FreeBSD$
+ */
+
+/*
+ * Selected command codes.
+ */
+#define MLX_CMD_ENQUIRY		0x53
+#define MLX_CMD_ENQUIRY2	0x1c
+#define MLX_CMD_ENQSYSDRIVE	0x19
+#define MLX_CMD_READOLDSG	0xb6
+#define MLX_CMD_WRITEOLDSG	0xb7
+#define MLX_CMD_FLUSH		0x0a
+#define MLX_CMD_LOGOP		0x72
+#define MLX_CMD_REBUILDASYNC	0x16
+#define MLX_CMD_CHECKASYNC	0x1e
+#define MLX_CMD_REBUILDSTAT	0x0c
+#define MLX_CMD_STOPCHANNEL	0x13
+#define MLX_CMD_STARTCHANNEL	0x12
+
+/*
+ * Status values.
+ */
+#define MLX_STATUS_OK		0x0000
+#define MLX_STATUS_RDWROFFLINE	0x0002	/* read/write claims drive is offline */
+#define MLX_STATUS_WEDGED	0xdead	/* controller not listening */
+#define MLX_STATUS_BUSY		0xffff	/* command is in controller */
+
+/*
+ * Scatter-gather list format, type 1, kind 00.
+ */
+struct mlx_sgentry 
+{
+    u_int32_t	sg_addr;
+    u_int32_t	sg_count;
+} __attribute__ ((packed));
+
+/*
+ * Command result buffers, as placed in system memory by the controller.
+ */
+struct mlx_enquiry	/* MLX_CMD_ENQUIRY */
+{
+    u_int8_t		me_num_sys_drvs;
+    u_int8_t		res1[3];
+    u_int32_t		me_drvsize[32];
+    u_int16_t		me_flash_age;
+    u_int8_t		me_status_flags;
+#define MLX_ENQ_SFLAG_DEFWRERR	(1<<0)	/* deferred write error indicator */
+#define MLX_ENQ_SFLAG_BATTLOW	(1<<1)	/* battery low */
+    u_int8_t		res2;
+    u_int8_t		me_fwminor;
+    u_int8_t		me_fwmajor;
+    u_int8_t		me_rebuild_flag;
+    u_int8_t		me_max_commands;
+    u_int8_t		me_offline_sd_count;
+    u_int8_t		res3;
+    u_int16_t		me_event_log_seq_num;
+    u_int8_t		me_critical_sd_count;
+    u_int8_t		res4[3];
+    u_int8_t		me_dead_count;
+    u_int8_t		res5;
+    u_int8_t		me_rebuild_count;
+    u_int8_t		me_misc_flags;
+#define MLX_ENQ_MISC_BBU	(1<<3)	/* battery backup present */
+    struct 
+    {
+	u_int8_t	dd_targ;
+	u_int8_t	dd_chan;
+    } __attribute__ ((packed)) me_dead[20];
+} __attribute__ ((packed));
+
+struct mlx_enquiry2	/* MLX_CMD_ENQUIRY2 */
+{
+    u_int32_t		me_hardware_id;
+    u_int32_t		me_firmware_id;
+    u_int32_t		res1;
+    u_int8_t		me_configured_channels;
+    u_int8_t		me_actual_channels;
+    u_int8_t		me_max_targets;
+    u_int8_t		me_max_tags;
+    u_int8_t		me_max_sys_drives;
+    u_int8_t		me_max_arms;
+    u_int8_t		me_max_spans;
+    u_int8_t		res2;
+    u_int32_t		res3;
+    u_int32_t		me_mem_size;
+    u_int32_t		me_cache_size;
+    u_int32_t		me_flash_size;
+    u_int32_t		me_nvram_size;
+    u_int16_t		me_mem_type;
+    u_int16_t		me_clock_speed;
+    u_int16_t		me_mem_speed;
+    u_int16_t		me_hardware_speed;
+    u_int8_t		res4[10];
+    u_int16_t		me_max_commands;
+    u_int16_t		me_max_sg;
+    u_int16_t		me_max_dp;
+    u_int16_t		me_max_iod;
+    u_int16_t		me_max_comb;
+    u_int8_t		me_latency;
+    u_int8_t		res5;
+    u_int8_t		me_scsi_timeout;
+    u_int8_t		res6;
+    u_int16_t		me_min_freelines;
+    u_int8_t		res7[8];
+    u_int8_t		me_rate_const;
+    u_int8_t		res8[11];
+    u_int16_t		me_physblk;
+    u_int16_t		me_logblk;
+    u_int16_t		me_maxblk;
+    u_int16_t		me_blocking_factor;
+    u_int16_t		me_cacheline;
+    u_int8_t		me_scsi_cap;
+    u_int8_t		res9[5];
+    u_int16_t		me_fimware_build;
+    u_int8_t		me_fault_mgmt_type;
+    u_int8_t		res10;
+    u_int32_t		me_firmware_features;
+    u_int8_t		res11[8];
+} __attribute__ ((packed));
+
+struct mlx_enq_sys_drive /* MLX_CMD_ENQSYSDRIVE returns an array of 32 of these */
+{
+    u_int32_t		sd_size;
+    u_int8_t		sd_state;
+    u_int8_t		sd_raidlevel;
+    u_int16_t		res1;
+} __attribute__ ((packed));
+
+struct mlx_eventlog_entry	/* MLX_CMD_LOGOP/MLX_LOGOP_GET */
+{
+    u_int8_t		el_type;
+    u_int8_t		el_length;
+    u_char		el_target:5;
+    u_char		el_channel:3;
+    u_char		el_lun:6;
+    u_char		res1:2;
+    u_int16_t		el_seqno;
+    u_char		el_errorcode:7;
+    u_char		el_valid:1;
+    u_int8_t		el_segment;
+    u_char		el_sensekey:4;
+    u_char		res2:1;
+    u_char		el_ILI:1;
+    u_char		el_EOM:1;
+    u_char		el_filemark:1;
+    u_int8_t		el_information[4];
+    u_int8_t		el_addsense;
+    u_int8_t		el_csi[4];
+    u_int8_t		el_asc;
+    u_int8_t		el_asq;
+    u_int8_t		res3[12];
+} __attribute__ ((packed));
+
+#define MLX_LOGOP_GET		0x00	/* operation codes for MLX_CMD_LOGOP */
+#define MLX_LOGMSG_SENSE	0x00	/* log message contents codes */
+
+struct mlx_rebuild_stat	/* MLX_CMD_REBUILDSTAT */
+{
+    u_int32_t	rb_drive;
+    u_int32_t	rb_size;
+    u_int32_t	rb_remaining;
+} __attribute__ ((packed));
+