hook_fault_code() is an ARM32 specific API for hooking into data abort.
AM65X platforms (that integrate ARM v8 cores and select CONFIG_ARM64 as
arch) rely on pci-keystone.c but on them the enumeration of a
non-present BDF does not trigger a bus error, so the fixup exception
provided by calling hook_fault_code() is not needed and can be guarded
with CONFIG_ARM.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[lorenzo.pieralisi@arm.com: commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
return ret;
}
+#ifdef CONFIG_ARM
/*
* When a PCI device does not exist during config cycles, keystone host gets a
* bus error instead of returning 0xffffffff. This handler always returns 0
return 0;
}
+#endif
static int __init ks_pcie_init_id(struct keystone_pcie *ks_pcie)
{
if (ret < 0)
return ret;
+#ifdef CONFIG_ARM
/*
* PCIe access errors that result into OCP errors are caught by ARM as
* "External aborts"
*/
hook_fault_code(17, ks_pcie_fault, SIGBUS, 0,
"Asynchronous external abort");
+#endif
ks_pcie_start_link(pci);
dw_pcie_wait_for_link(pci);