| Message ID | 20181015093301.1007-2-aik@ozlabs.ru |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | powerpc/powernv/npu: Reworks for NVIDIA V100 + P9 passthrough (part 2) | expand |
On Mon, Oct 15, 2018 at 08:32:57PM +1100, Alexey Kardashevskiy wrote: > This step is to help removing the npu struct from pnv_phb so it > can be used by pseries as well. > > Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> > --- > arch/powerpc/platforms/powernv/npu-dma.c | 20 +++++++++++++++----- > 1 file changed, 15 insertions(+), 5 deletions(-) > > diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c > index 3a5c4ed..13e5153 100644 > --- a/arch/powerpc/platforms/powernv/npu-dma.c > +++ b/arch/powerpc/platforms/powernv/npu-dma.c > @@ -389,6 +389,18 @@ struct pnv_ioda_pe *pnv_pci_npu_setup_iommu(struct pnv_ioda_pe *npe) > return gpe; > } > > +/* > + * NPU2 ATS > + */ > +static struct npu *npdev_to_npu(struct pci_dev *npdev) > +{ > + struct pnv_phb *nphb; > + > + nphb = pci_bus_to_host(npdev->bus)->private_data; > + > + return &nphb->npu; > +} > + > /* Maximum number of nvlinks per npu */ > #define NV_MAX_LINKS 6 > > @@ -546,7 +558,6 @@ static void acquire_atsd_reg(struct npu_context *npu_context, > int i, j; > struct npu *npu; > struct pci_dev *npdev; > - struct pnv_phb *nphb; > > for (i = 0; i <= max_npu2_index; i++) { > mmio_atsd_reg[i].reg = -1; > @@ -561,8 +572,7 @@ static void acquire_atsd_reg(struct npu_context *npu_context, > if (!npdev) > continue; > > - nphb = pci_bus_to_host(npdev->bus)->private_data; > - npu = &nphb->npu; > + npu = npdev_to_npu(npdev); > mmio_atsd_reg[i].npu = npu; > mmio_atsd_reg[i].reg = get_mmio_atsd_reg(npu); > while (mmio_atsd_reg[i].reg < 0) { > @@ -749,7 +759,7 @@ struct npu_context *pnv_npu2_init_context(struct pci_dev *gpdev, > } > > nphb = pci_bus_to_host(npdev->bus)->private_data; > - npu = &nphb->npu; > + npu = npdev_to_npu(npdev); > > /* > * Setup the NPU context table for a particular GPU. These need to be > @@ -869,7 +879,7 @@ void pnv_npu2_destroy_context(struct npu_context *npu_context, > return; > > nphb = pci_bus_to_host(npdev->bus)->private_data; > - npu = &nphb->npu; > + npu = npdev_to_npu(npdev); > nvlink_dn = of_parse_phandle(npdev->dev.of_node, "ibm,nvlink", 0); > if (WARN_ON(of_property_read_u32(nvlink_dn, "ibm,npu-link-index", > &nvlink_index)))
diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c index 3a5c4ed..13e5153 100644 --- a/arch/powerpc/platforms/powernv/npu-dma.c +++ b/arch/powerpc/platforms/powernv/npu-dma.c @@ -389,6 +389,18 @@ struct pnv_ioda_pe *pnv_pci_npu_setup_iommu(struct pnv_ioda_pe *npe) return gpe; } +/* + * NPU2 ATS + */ +static struct npu *npdev_to_npu(struct pci_dev *npdev) +{ + struct pnv_phb *nphb; + + nphb = pci_bus_to_host(npdev->bus)->private_data; + + return &nphb->npu; +} + /* Maximum number of nvlinks per npu */ #define NV_MAX_LINKS 6 @@ -546,7 +558,6 @@ static void acquire_atsd_reg(struct npu_context *npu_context, int i, j; struct npu *npu; struct pci_dev *npdev; - struct pnv_phb *nphb; for (i = 0; i <= max_npu2_index; i++) { mmio_atsd_reg[i].reg = -1; @@ -561,8 +572,7 @@ static void acquire_atsd_reg(struct npu_context *npu_context, if (!npdev) continue; - nphb = pci_bus_to_host(npdev->bus)->private_data; - npu = &nphb->npu; + npu = npdev_to_npu(npdev); mmio_atsd_reg[i].npu = npu; mmio_atsd_reg[i].reg = get_mmio_atsd_reg(npu); while (mmio_atsd_reg[i].reg < 0) { @@ -749,7 +759,7 @@ struct npu_context *pnv_npu2_init_context(struct pci_dev *gpdev, } nphb = pci_bus_to_host(npdev->bus)->private_data; - npu = &nphb->npu; + npu = npdev_to_npu(npdev); /* * Setup the NPU context table for a particular GPU. These need to be @@ -869,7 +879,7 @@ void pnv_npu2_destroy_context(struct npu_context *npu_context, return; nphb = pci_bus_to_host(npdev->bus)->private_data; - npu = &nphb->npu; + npu = npdev_to_npu(npdev); nvlink_dn = of_parse_phandle(npdev->dev.of_node, "ibm,nvlink", 0); if (WARN_ON(of_property_read_u32(nvlink_dn, "ibm,npu-link-index", &nvlink_index)))
This step is to help removing the npu struct from pnv_phb so it can be used by pseries as well. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> --- arch/powerpc/platforms/powernv/npu-dma.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-)