[ Upstream commit
f316a2b53cd7f37963ae20ec7072eb27a349a4ce ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ks_dw_pcie_enable_error_irq(ks_pcie);
}
ks_dw_pcie_enable_error_irq(ks_pcie);
}
/*
* 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
/*
* 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
static int __init ks_pcie_host_init(struct pcie_port *pp)
{
static int __init ks_pcie_host_init(struct pcie_port *pp)
{
val |= BIT(12);
writel(val, pci->dbi_base + PCIE_CAP_BASE + PCI_EXP_DEVCTL);
val |= BIT(12);
writel(val, pci->dbi_base + PCIE_CAP_BASE + PCI_EXP_DEVCTL);
/*
* PCIe access errors that result into OCP errors are caught by ARM as
* "External aborts"
*/
hook_fault_code(17, keystone_pcie_fault, SIGBUS, 0,
"Asynchronous external abort");
/*
* PCIe access errors that result into OCP errors are caught by ARM as
* "External aborts"
*/
hook_fault_code(17, keystone_pcie_fault, SIGBUS, 0,
"Asynchronous external abort");