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 <a...@ozlabs.ru>
---
Changes:
v5:
* added WARN_ON_ONCE
v4:
* dropped "IBM,npu-vphb" compatible type on PHB and use the type of NVLink
---
arch/powerpc/platforms/pseries/pci.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/pci.c
b/arch/powerpc/platforms/pseries/pci.c
index 41d8a4d..7725825 100644
--- a/arch/powerpc/platforms/pseries/pci.c
+++ b/arch/powerpc/platforms/pseries/pci.c
@@ -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;
+ }
+ }
}
/*
--
2.17.1
