Store information about what IOAT designation types are supported by
underlying hardware as well as the largest store block size allowed.
These values will be needed by passthrough.
Reviewed-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx>
Reviewed-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
Signed-off-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>
---
arch/s390/include/asm/pci.h | 2 ++
arch/s390/include/asm/pci_clp.h | 6 ++++--
arch/s390/pci/pci_clp.c | 2 ++
3 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 2474b8d30f2a..1a8f9f42da3a 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -126,9 +126,11 @@ struct zpci_dev {
u32 gd; /* GISA designation for passthrough */
u16 vfn; /* virtual function number */
u16 pchid; /* physical channel ID */
+ u16 maxstbl; /* Maximum store block size */
u8 pfgid; /* function group ID */
u8 pft; /* pci function type */
u8 port;
+ u8 dtsm; /* Supported DT mask */
u8 rid_available : 1;
u8 has_hp_slot : 1;
u8 has_resources : 1;
diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h
index 3af8d196da74..124fadfb74b9 100644
--- a/arch/s390/include/asm/pci_clp.h
+++ b/arch/s390/include/asm/pci_clp.h
@@ -153,9 +153,11 @@ struct clp_rsp_query_pci_grp {
u8 : 6;
u8 frame : 1;
u8 refresh : 1; /* TLB refresh mode */
- u16 reserved2;
+ u16 : 3;
+ u16 maxstbl : 13; /* Maximum store block size */
u16 mui;
- u16 : 16;
+ u8 dtsm; /* Supported DT mask */
+ u8 reserved3;
u16 maxfaal;
u16 : 4;
u16 dnoi : 12;
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index e9ed0e4a5cf0..bc7446566cbc 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -103,6 +103,8 @@ static void clp_store_query_pci_fngrp(struct zpci_dev *zdev,
zdev->max_msi = response->noi;
zdev->fmb_update = response->mui;
zdev->version = response->version;
+ zdev->maxstbl = response->maxstbl;
+ zdev->dtsm = response->dtsm;
switch (response->version) {
case 1:
--
2.27.0
