diff options
| author | Oliver O'Halloran <oohall@gmail.com> | 2020-07-22 16:57:10 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-26 23:34:23 +1000 |
| commit | d29a2488d2c020032fdb1fe052347a6021e3591d (patch) | |
| tree | 1e88fdd679229f17a60192417300594d8faee655 /arch/powerpc/platforms/powernv/pci.h | |
| parent | a4bc676ed5c3f53781cc342b73097eb7e8d43fa5 (diff) | |
powerpc/powernv/sriov: Drop iov->pe_num_map[]
Currently the iov->pe_num_map[] does one of two things depending on
whether single PE mode is being used or not. When it is, this contains an
array which maps a vf_index to the corresponding PE number. When single PE
mode is not being used this contains a scalar which is the base PE for the
set of enabled VFs (for for VFn is base + n).
The array was necessary because when calling pnv_ioda_alloc_pe() there is
no guarantee that the allocated PEs would be contigious. We can now
allocate contigious blocks of PEs so this is no longer an issue. This
allows us to drop the if (single_mode) {} .. else {} block scattered
through the SR-IOV code which is a nice clean up.
This also fixes a bug in pnv_pci_sriov_disable() which is the non-atomic
bitmap_clear() to manipulate the PE allocation map. Other users of the map
assume it will be accessed with atomic ops.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200722065715.1432738-11-oohall@gmail.com
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.h')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index 06431a452130..f76923f44f66 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -239,7 +239,12 @@ struct pnv_iov_data { /* number of VFs enabled */ u16 num_vfs; - unsigned int *pe_num_map; /* PE# for the first VF PE or array */ + + /* + * Pointer to the IODA PE state of each VF. Note that this is a pointer + * into the PHB's PE array (phb->ioda.pe_array). + */ + struct pnv_ioda_pe *vf_pe_arr; /* Did we map the VF BARs with single-PE IODA BARs? */ bool m64_single_mode; |