Update the CAM API for FreeBSD 10:

- Remove the timeout_ch field.  It's been deprecated since FreeBSD 7.0;
  MPSAFE drivers should be managing their own timeout storage.  The
  remaining non-MPSAFE drivers have been modified to also manage their own
  storage, and should be considered for updating to MPSAFE (or removal)
  during the FreeBSD 10.x lifecycle.

- Add fields related to soft timeouts and quality of service, to be used
  in upcoming work.

- Add room for more flags in the CCB header and path_inq structures.

- Begin support for extended 64-bit LUNs.

- Bump the CAM version number to 0x18, but add compat shims.  Tested with
  camcontrol and smartctl.

Reviewed by:    nathanw, ken, kib
Approved by:    re
Obtained from:  Netflix

1 files changed, 19 insertions, 10 deletions

diff --git a/sys/cam/cam_ccb.h b/sys/cam/cam_ccb.h
index 4012068..3f594cb 100644
--- a/sys/cam/cam_ccb.h
+++ b/sys/cam/cam_ccb.h
@@ -107,6 +107,10 @@ typedef enum {
 	CAM_SEND_STATUS		= 0x40000000 /* Send status after data phase  */
 } ccb_flags;
 
+typedef enum {
+	CAM_EXTLUN_VALID	= 0x00000001,/* 64bit lun field is valid      */
+} ccb_xflags;
+
 /* XPT Opcodes for xpt_action */
 typedef enum {
 /* Function code flags are bits greater than 0xff */
@@ -296,6 +300,12 @@ typedef union {
 	u_int8_t	bytes[CCB_SIM_PRIV_SIZE * sizeof(ccb_priv_entry)];
 } ccb_spriv_area;
 
+typedef struct {
+	struct timeval	*etime;
+	uintptr_t	sim_data;
+	uintptr_t	periph_data;
+} ccb_qos_area;
+
 struct ccb_hdr {
 	cam_pinfo	pinfo;		/* Info for priority scheduling */
 	camq_entry	xpt_links;	/* For chaining in the XPT layer */	
@@ -310,16 +320,14 @@ struct ccb_hdr {
 	path_id_t	path_id;	/* Path ID for the request */
 	target_id_t	target_id;	/* Target device ID */
 	lun_id_t	target_lun;	/* Target LUN number */
+	lun64_id_t	ext_lun;	/* 64bit extended/multi-level LUNs */
 	u_int32_t	flags;		/* ccb_flags */
+	u_int32_t	xflags;		/* Extended flags */
 	ccb_ppriv_area	periph_priv;
 	ccb_spriv_area	sim_priv;
-	u_int32_t	timeout;	/* Timeout value */
-
-	/*
-	 * Deprecated, only for use by non-MPSAFE SIMs.  All others must
-	 * allocate and initialize their own callout storage.
-	 */
-	struct		callout_handle timeout_ch;
+	ccb_qos_area	qos;
+	u_int32_t	timeout;	/* Hard timeout value in seconds */
+	struct timeval	softtimeout;	/* Soft timeout value in sec + usec */
 };
 
 /* Get Device Information CCB */
@@ -541,7 +549,7 @@ struct ccb_dev_match {
 /*
  * Definitions for the path inquiry CCB fields.
  */
-#define CAM_VERSION	0x17	/* Hex value for current version */
+#define CAM_VERSION	0x18	/* Hex value for current version */
 
 typedef enum {
 	PI_MDP_ABLE	= 0x80,	/* Supports MDP message */
@@ -564,6 +572,7 @@ typedef enum {
 } pi_tmflag;
 
 typedef enum {
+	PIM_EXTLUNS	= 0x100,/* 64bit extended LUNs supported */
 	PIM_SCANHILO	= 0x80,	/* Bus scans from high ID to low ID */
 	PIM_NOREMOVE	= 0x40,	/* Removeable devices not included in scan */
 	PIM_NOINITIATOR	= 0x20,	/* Initiator role not supported. */
@@ -595,8 +604,8 @@ struct ccb_pathinq {
 	struct 	    ccb_hdr ccb_h;
 	u_int8_t    version_num;	/* Version number for the SIM/HBA */
 	u_int8_t    hba_inquiry;	/* Mimic of INQ byte 7 for the HBA */
-	u_int8_t    target_sprt;	/* Flags for target mode support */
-	u_int8_t    hba_misc;		/* Misc HBA features */
+	u_int16_t   target_sprt;	/* Flags for target mode support */
+	u_int32_t   hba_misc;		/* Misc HBA features */
 	u_int16_t   hba_eng_cnt;	/* HBA engine count */
 					/* Vendor Unique capabilities */
 	u_int8_t    vuhba_flags[VUHBALEN];