From: Matthew Rosato <mjrosato@linux.ibm.com>
To: alex.williamson@redhat.com, cohuck@redhat.com, schnelle@linux.ibm.com
Cc: pmorel@linux.ibm.com, borntraeger@de.ibm.com, hca@linux.ibm.com,
gor@linux.ibm.com, gerald.schaefer@linux.ibm.com,
linux-s390@vger.kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 3/4] s390/pci: Get hardware-reported max store block length
Date: Tue, 19 Jan 2021 15:02:29 -0500 [thread overview]
Message-ID: <1611086550-32765-4-git-send-email-mjrosato@linux.ibm.com> (raw)
In-Reply-To: <1611086550-32765-1-git-send-email-mjrosato@linux.ibm.com>
We'll need to know this information for vfio passthrough.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
---
arch/s390/include/asm/pci.h | 1 +
arch/s390/include/asm/pci_clp.h | 3 ++-
arch/s390/pci/pci_clp.c | 1 +
3 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index f16ffba..04f1f48 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -181,6 +181,7 @@ struct zpci_dev {
atomic64_t mapped_pages;
atomic64_t unmapped_pages;
+ u16 maxstbl;
u8 version;
enum pci_bus_speed max_bus_speed;
diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h
index 9fb7cbf..ddd1604 100644
--- a/arch/s390/include/asm/pci_clp.h
+++ b/arch/s390/include/asm/pci_clp.h
@@ -155,7 +155,8 @@ struct clp_rsp_query_pci_grp {
u8 : 1;
u8 frame : 1;
u8 refresh : 1; /* TLB refresh mode */
- u16 reserved2;
+ u16 : 3;
+ u16 maxstbl : 13;
u16 mui;
u16 : 16;
u16 maxfaal;
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index 630f8fc..99b64fe 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -104,6 +104,7 @@ static void clp_store_query_pci_fngrp(struct zpci_dev *zdev,
zdev->fmb_update = response->mui;
zdev->version = response->version;
zdev->relaxed_align = response->relaxed_align;
+ zdev->maxstbl = response->maxstbl;
switch (response->version) {
case 1:
--
1.8.3.1
next prev parent reply other threads:[~2021-01-19 20:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-19 20:02 [PATCH 0/4] vfio-pci/zdev: Fixing s390 vfio-pci ISM support Matthew Rosato
2021-01-19 20:02 ` [PATCH 1/4] s390/pci: track alignment/length strictness for zpci_dev Matthew Rosato
2021-01-19 20:02 ` [PATCH 2/4] vfio-pci/zdev: Pass the relaxed alignment flag Matthew Rosato
2021-01-19 20:02 ` Matthew Rosato [this message]
2021-01-19 20:02 ` [PATCH 4/4] vfio-pci/zdev: Introduce the zPCI I/O vfio region Matthew Rosato
2021-01-20 13:21 ` Niklas Schnelle
2021-01-20 17:10 ` Matthew Rosato
2021-01-20 17:28 ` Niklas Schnelle
2021-01-20 17:40 ` Matthew Rosato
2021-01-21 20:50 ` Alex Williamson
2021-01-21 10:01 ` Niklas Schnelle
2021-01-21 15:57 ` Matthew Rosato
2021-01-22 23:48 ` Alex Williamson
2021-01-25 14:40 ` Matthew Rosato
2021-01-25 15:42 ` Cornelia Huck
2021-01-25 15:52 ` Matthew Rosato
2021-01-26 23:18 ` Alex Williamson
2021-01-27 14:23 ` Matthew Rosato
2021-01-27 15:53 ` Alex Williamson
2021-01-27 17:45 ` Cornelia Huck
2021-01-27 18:27 ` Matthew Rosato
2021-01-19 20:50 ` [PATCH 0/4] vfio-pci/zdev: Fixing s390 vfio-pci ISM support Matthew Rosato
2021-01-20 9:02 ` Pierre Morel
2021-01-20 14:02 ` Matthew Rosato
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