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| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2022-06-06 23:33:12 +0300 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@linux.ibm.com> | 2022-07-11 10:54:22 +0300 |
| commit | c68468ed3416ea88d7b14dabb1fa584c3a90cd85 (patch) | |
| tree | bba38e5590cc20f3c5ca1ebe93f3a72c5222addb /arch/s390/include/asm | |
| parent | 062f002485d4d5f26f9e8fbce831fd28c4b75ca5 (diff) | |
| download | linux-c68468ed3416ea88d7b14dabb1fa584c3a90cd85.tar.xz | |
s390/pci: stash associated GISA designation
For passthrough devices, we will need to know the GISA designation of the
guest if interpretation facilities are to be used. Setup to stash this in
the zdev and set a default of 0 (no GISA designation) for now; a subsequent
patch will set a valid GISA designation for passthrough devices.
Also, extend mpcific routines to specify this stashed designation as part
of the mpcific command.
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Link: https://lore.kernel.org/r/20220606203325.110625-9-mjrosato@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/pci.h | 1 | ||||
| -rw-r--r-- | arch/s390/include/asm/pci_clp.h | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index fdb9745ee998..42a4a312a6dd 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -123,6 +123,7 @@ struct zpci_dev { enum zpci_state state; u32 fid; /* function ID, used by sclp */ u32 fh; /* function handle, used by insn's */ + u32 gisa; /* GISA designation for passthrough */ u16 vfn; /* virtual function number */ u16 pchid; /* physical channel ID */ u8 pfgid; /* function group ID */ diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h index 1f4b666e85ee..f3286bc5ba6e 100644 --- a/arch/s390/include/asm/pci_clp.h +++ b/arch/s390/include/asm/pci_clp.h @@ -173,7 +173,8 @@ struct clp_req_set_pci { u16 reserved2; u8 oc; /* operation controls */ u8 ndas; /* number of dma spaces */ - u64 reserved3; + u32 reserved3; + u32 gisa; /* GISA designation */ } __packed; /* Set PCI function response */ |