ThunderX pass1.x requires to emulate the EA headers for on-chip devices
hence it has to use custom pci_thunder_ecam_ops for accessing PCI config
space (pci-thuner-ecam.c). Add new entries to MCFG quirk array where it
can be applied while probing ACPI based PCI host controller.
ThunderX pass1.x is using the same way for accessing off-chip devices
(so-called PEM) as silicon pass-2.x so we need to add PEM quirk
entries too.
Quirk is considered for ThunderX silicon pass1.x only which is identified
via MCFG revision 2.
Signed-off-by: Tomasz Nowicki <tn@xxxxxxxxxxxx>
---
drivers/acpi/pci_mcfg.c | 15 +++++++++++++++
drivers/pci/host/pci-thunder-ecam.c | 2 +-
include/linux/pci-ecam.h | 3 +++
3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c
index e4e2b9b..5e16211 100644
--- a/drivers/acpi/pci_mcfg.c
+++ b/drivers/acpi/pci_mcfg.c
@@ -76,6 +76,21 @@ static struct mcfg_fixup mcfg_quirks[] = {
/* SoC pass2.x */
THUNDER_MCFG_QUIRK(1, 0UL),
THUNDER_MCFG_QUIRK(1, 1UL),
+
+ /* SoC pass1.x */
+ THUNDER_MCFG_QUIRK(2, 0UL),
+ THUNDER_MCFG_QUIRK(2, 1UL),
+#endif
+#ifdef CONFIG_PCI_HOST_THUNDER_ECAM
+ /* SoC pass1.x */
+ { "CAVIUM", "THUNDERX", 2, 0, MCFG_BUS_ANY, &pci_thunder_ecam_ops },
+ { "CAVIUM", "THUNDERX", 2, 1, MCFG_BUS_ANY, &pci_thunder_ecam_ops },
+ { "CAVIUM", "THUNDERX", 2, 2, MCFG_BUS_ANY, &pci_thunder_ecam_ops },
+ { "CAVIUM", "THUNDERX", 2, 3, MCFG_BUS_ANY, &pci_thunder_ecam_ops },
+ { "CAVIUM", "THUNDERX", 2, 10, MCFG_BUS_ANY, &pci_thunder_ecam_ops },
+ { "CAVIUM", "THUNDERX", 2, 11, MCFG_BUS_ANY, &pci_thunder_ecam_ops },
+ { "CAVIUM", "THUNDERX", 2, 12, MCFG_BUS_ANY, &pci_thunder_ecam_ops },
+ { "CAVIUM", "THUNDERX", 2, 13, MCFG_BUS_ANY, &pci_thunder_ecam_ops },
#endif
};
diff --git a/drivers/pci/host/pci-thunder-ecam.c b/drivers/pci/host/pci-thunder-ecam.c
index d50a3dc..b6c17e2 100644
--- a/drivers/pci/host/pci-thunder-ecam.c
+++ b/drivers/pci/host/pci-thunder-ecam.c
@@ -346,7 +346,7 @@ static int thunder_ecam_config_write(struct pci_bus *bus, unsigned int devfn,
return pci_generic_config_write(bus, devfn, where, size, val);
}
-static struct pci_ecam_ops pci_thunder_ecam_ops = {
+struct pci_ecam_ops pci_thunder_ecam_ops = {
.bus_shift = 20,
.pci_ops = {
.map_bus = pci_ecam_map_bus,
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
index 3f2a98f..5a1f291 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h
@@ -62,6 +62,9 @@ extern struct pci_ecam_ops pci_generic_ecam_ops;
#ifdef CONFIG_PCI_HOST_THUNDER_PEM
extern struct pci_ecam_ops pci_thunder_pem_ops;
#endif
+#ifdef CONFIG_PCI_HOST_THUNDER_ECAM
+extern struct pci_ecam_ops pci_thunder_ecam_ops;
+#endif
/* ops for buggy ECAM that supports only 32-bit accesses */
extern struct pci_ecam_ops pci_32b_ops;
--
2.7.4
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