From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40692) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1baHpB-0003H1-GP for qemu-devel@nongnu.org; Thu, 18 Aug 2016 03:33:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1baHp8-00015h-Bd for qemu-devel@nongnu.org; Thu, 18 Aug 2016 03:33:13 -0400 Received: from smtp5-g21.free.fr ([2a01:e0c:1:1599::14]:46004) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1baHp8-00015O-6a for qemu-devel@nongnu.org; Thu, 18 Aug 2016 03:33:10 -0400 From: =?UTF-8?q?Herv=C3=A9=20Poussineau?= Date: Thu, 18 Aug 2016 09:31:29 +0200 Message-Id: <1471505489-1221-5-git-send-email-hpoussin@reactos.org> In-Reply-To: <1471505489-1221-1-git-send-email-hpoussin@reactos.org> References: <1471505489-1221-1-git-send-email-hpoussin@reactos.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH 4/4] lsi: never set DMA FIFO Empty (DFE) bit in DSTAT register List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: qemu-devel@nongnu.org, =?UTF-8?q?Herv=C3=A9=20Poussineau?= 53C895A datasheet says: "This bit (DFE) is a pure status bit and will not cause an interrupt" This bit is already auto-generated in lsi_read_reg when reading the DSTAT= register. This fixes IBM RS/6000 7020 firmware, which is: - resetting the adapter - enabling all interrupt sources (including DIP, ie interrupts from DSTAT= ) - waiting for ISTAT0 to become 0 (including DIP=3D0, ie no interrupt comi= ng from DSTAT) Signed-off-by: Herv=C3=A9 Poussineau --- hw/scsi/lsi53c895a.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c index 2e99d5e..feb1191 100644 --- a/hw/scsi/lsi53c895a.c +++ b/hw/scsi/lsi53c895a.c @@ -326,7 +326,7 @@ static void lsi_soft_reset(LSIState *s) s->istat0 =3D 0; s->istat1 =3D 0; s->dcmd =3D 0x40; - s->dstat =3D LSI_DSTAT_DFE; + s->dstat =3D 0; s->dien =3D 0; s->sist0 =3D 0; s->sist1 =3D 0; --=20 2.1.4