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| author | Oliver O'Halloran <oohall@gmail.com> | 2020-07-22 09:57:09 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-26 16:34:22 +0300 |
| commit | a4bc676ed5c3f53781cc342b73097eb7e8d43fa5 (patch) | |
| tree | 42513cb1e9eb5ce503e267d3345cb16bf2d5afb9 /arch/powerpc/platforms/powernv/pci.h | |
| parent | a610d35cc8780e781321ea8d002d5fef8484bf59 (diff) | |
| download | linux-a4bc676ed5c3f53781cc342b73097eb7e8d43fa5.tar.xz | |
powerpc/powernv/pci: Refactor pnv_ioda_alloc_pe()
Rework the PE allocation logic to allow allocating blocks of PEs rather
than individually. We'll use this to allocate contigious blocks of PEs for
the SR-IOVs.
This patch also adds code to pnv_ioda_alloc_pe() and pnv_ioda_reserve_pe() to
use the existing, but unused, phb->pe_alloc_mutex. Currently these functions
use atomic bit ops to release a currently allocated PE number. However,
the pnv_ioda_alloc_pe() wants to have exclusive access to the bit map while
scanning for hole large enough to accomodate the allocation size.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200722065715.1432738-10-oohall@gmail.com
Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.h')
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index 23fc5e391c7f..06431a452130 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -224,7 +224,7 @@ int pnv_ioda_deconfigure_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe); void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe); void pnv_pci_ioda2_release_pe_dma(struct pnv_ioda_pe *pe); -struct pnv_ioda_pe *pnv_ioda_alloc_pe(struct pnv_phb *phb); +struct pnv_ioda_pe *pnv_ioda_alloc_pe(struct pnv_phb *phb, int count); void pnv_ioda_free_pe(struct pnv_ioda_pe *pe); #ifdef CONFIG_PCI_IOV |