git: bc6d368bb8a3 - stable/12 - pms: handle maximum size IO with any alignment

[Alexander Motin]

The branch stable/12 has been updated by mav:

URL: https://cgit.FreeBSD.org/src/commit/?id=bc6d368bb8a359c557af200a93f2862f0571d6ea

commit bc6d368bb8a359c557af200a93f2862f0571d6ea
Author:     Ryan Libby <rlibby at FreeBSD.org>
AuthorDate: 2021-01-20 21:59:49 +0000
Commit:     Alexander Motin <mav at FreeBSD.org>
CommitDate: 2021-04-14 00:46:19 +0000

    pms: handle maximum size IO with any alignment
    
    Define the maximum numbers of segments to allow for non-page alignment
    at the beginning and end of a maxphys size transfer.  Also set
    ccb_pathinq.maxio consistent with maxphys.
    
    Reviewed by:    imp
    Sponsored by:   Dell EMC Isilon
    Differential Revision:  https://reviews.freebsd.org/D28043
    
    (cherry picked from commit e54a1d5751805714bf6ea5e2e99887388110f9f0)
---
 sys/dev/pms/freebsd/driver/ini/src/agdef.h   | 2 +-
 sys/dev/pms/freebsd/driver/ini/src/agtiapi.c | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/sys/dev/pms/freebsd/driver/ini/src/agdef.h b/sys/dev/pms/freebsd/driver/ini/src/agdef.h
index a07d97357fd3..fea7563c8b04 100644
--- a/sys/dev/pms/freebsd/driver/ini/src/agdef.h
+++ b/sys/dev/pms/freebsd/driver/ini/src/agdef.h
@@ -62,7 +62,7 @@ EW     09-17-2004     1.0.0     Constant definitions
 #define AGTIAPI_MAX_DEVICE_7H       256 /*Max devices per channel in 7H */
 #define AGTIAPI_MAX_DEVICE_8H       512 /*Max devices per channel in 8H*/
 #define AGTIAPI_MAX_CAM_Q_DEPTH     1024
-#define AGTIAPI_NSEGS               (MAXPHYS / PAGE_SIZE)
+#define AGTIAPI_NSEGS               (btoc(MAXPHYS) + 1)
 /*
 ** Adapter specific defines 
 */
diff --git a/sys/dev/pms/freebsd/driver/ini/src/agtiapi.c b/sys/dev/pms/freebsd/driver/ini/src/agtiapi.c
index ef7dc19c05ce..8a6865bbccc9 100644
--- a/sys/dev/pms/freebsd/driver/ini/src/agtiapi.c
+++ b/sys/dev/pms/freebsd/driver/ini/src/agtiapi.c
@@ -1833,7 +1833,8 @@ static void agtiapi_cam_action( struct cam_sim *sim, union ccb * ccb )
     cpi->hba_eng_cnt = 0;
     cpi->max_target = maxTargets - 1;
     cpi->max_lun = AGTIAPI_MAX_LUN;
-    cpi->maxio = 1024 *1024; /* Max supported I/O size, in bytes. */
+    /* Max supported I/O size, in bytes. */
+    cpi->maxio = ulmin(1024 * 1024, MAXPHYS);
     cpi->initiator_id = 255;
     strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
     strlcpy(cpi->hba_vid, "PMC", HBA_IDLEN);