Re: [PATCH 10/32] s390/pci: stash dtsm and maxstbl
From: Pierre Morel <hidden>
Date: 2021-12-09 09:12:56
Also in:
linux-s390, lkml
On 12/7/21 21:57, Matthew Rosato wrote:
quoted hunk ↗ jump to hunk
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. Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> --- 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:
Reviewed-by: Pierre Morel <redacted> -- Pierre Morel IBM Lab Boeblingen