powerpc/pseries/npu: Enable platform support

We already changed NPU API for GPUs to not to call OPAL and the remaining
bit is initializing NPU structures.

This searches for POWER9 NVLinks attached to any device on a PHB and
initializes an NPU structure if any found.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alexey Kardashevskiy 2018-12-19 19:52:19 +11:00 committed by Michael Ellerman
parent 68c0449ea1
commit 3be2df00e2

View File

@ -29,6 +29,7 @@
#include <asm/pci-bridge.h>
#include <asm/prom.h>
#include <asm/ppc-pci.h>
#include <asm/pci.h>
#include "pseries.h"
#if 0
@ -237,6 +238,8 @@ static void __init pSeries_request_regions(void)
void __init pSeries_final_fixup(void)
{
struct pci_controller *hose;
pSeries_request_regions();
eeh_probe_devices();
@ -246,6 +249,25 @@ void __init pSeries_final_fixup(void)
ppc_md.pcibios_sriov_enable = pseries_pcibios_sriov_enable;
ppc_md.pcibios_sriov_disable = pseries_pcibios_sriov_disable;
#endif
list_for_each_entry(hose, &hose_list, list_node) {
struct device_node *dn = hose->dn, *nvdn;
while (1) {
dn = of_find_all_nodes(dn);
if (!dn)
break;
nvdn = of_parse_phandle(dn, "ibm,nvlink", 0);
if (!nvdn)
continue;
if (!of_device_is_compatible(nvdn, "ibm,npu-link"))
continue;
if (!of_device_is_compatible(nvdn->parent,
"ibm,power9-npu"))
continue;
WARN_ON_ONCE(pnv_npu2_init(hose));
break;
}
}
}
/*