SLOF/SOURCES/slof-board-qemu-slof-vio-vscsi-Scan-up-to-64-SCSI-IDs.patch

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From 49c493991c8cb9779022ffe3f1b2ac980f07852c Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Thu, 20 Dec 2018 10:26:07 +0000
Subject: [PATCH 1/3] board-qemu/slof/vio-vscsi: Scan up to 64 SCSI IDs
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <1545301567-8565-2-git-send-email-thuth@redhat.com>
Patchwork-id: 83706
O-Subject: [RHEL8 SLOF PATCH 1/1] board-qemu/slof/vio-vscsi: Scan up to 64 SCSI IDs
Bugzilla: 1655649
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: David Gibson <dgibson@redhat.com>
RH-Acked-by: Serhii Popovych <spopovyc@redhat.com>
QEMU supports up the 64 SCSI IDs on the vscsi "bus", see the string
"max_target = 63" in the source file hw/scsi/spapr_vscsi.c of QEMU.
However, SLOF currently only checks the first 9 IDs on the vscsi adaptor,
so when you try to boot from a CD-ROM like this, the boot fails:
qemu-system-ppc64 ... -device spapr-vscsi,id=scsi0,reg=0x2000 \
-drive file=/path/to/cdrom.iso,format=raw,if=none,id=dr1,readonly=on \
-device scsi-cd,bus=scsi0.0,channel=0,scsi-id=63,lun=1,drive=dr1,id=scd1
Thus let's change the amount of IDs that we scan in SLOF to 64, too, to
match the ID range that QEMU provides.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
(cherry picked from commit cad96808d130bcc1fc36741cbedaaa3f8215e6c4)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
board-qemu/slof/vio-vscsi.fs | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/board-qemu/slof/vio-vscsi.fs b/board-qemu/slof/vio-vscsi.fs
index f2d4c6f..be11b69 100644
--- a/board-qemu/slof/vio-vscsi.fs
+++ b/board-qemu/slof/vio-vscsi.fs
@@ -507,9 +507,9 @@ TRUE VALUE first-time-init?
10000 \ Larger value seem to have problems with some CDROMs
;
-8 CONSTANT #dev
+\ Report the amount of supported SCSI IDs - QEMU uses "max_target = 63"
: dev-max-target ( -- #max-target )
- #dev
+ 40
;
" scsi-probe-helpers.fs" included
--
1.8.3.1