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| author | Tomasz Nowicki <tn@semihalf.com> | 2016-12-01 00:07:56 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <helgaas@kernel.org> | 2016-12-06 13:45:49 -0600 |
| commit | 44f22bd91e88f9a1203a6e564a237e593f5f2f74 (patch) | |
| tree | c4c5e1e3305986af0fc32be51e804be5e1f24d00 /drivers/acpi/pci_mcfg.c | |
| parent | 0d414268fb8d0844030f87027e904f69d96706be (diff) | |
| download | op-kernel-dev-44f22bd91e88f9a1203a6e564a237e593f5f2f74.zip op-kernel-dev-44f22bd91e88f9a1203a6e564a237e593f5f2f74.tar.gz | |
PCI: Add MCFG quirks for Cavium ThunderX pass2.x host controller
ThunderX PCIe controller to off-chip devices (so-called PEM) is not fully
compliant with ECAM standard. It uses non-standard configuration space
accessors (see thunder_pem_ecam_ops) and custom configuration space
granulation (see bus_shift = 24). In order to access configuration space
and probe PEM as ACPI-based PCI host controller we need to add MCFG quirk
infrastructure. This involves:
1. A new thunder_pem_acpi_init() init function to locate PEM-specific
register ranges using ACPI.
2. Export PEM thunder_pem_ecam_ops structure so it is visible to MCFG quirk
code.
3. New quirk entries for each PEM segment. Each contains platform IDs,
mentioned thunder_pem_ecam_ops and CFG resources.
Quirk is considered for ThunderX silicon pass2.x only which is identified
via MCFG revision 1.
ThunderX pass 2.x requires the following accessors:
NUMA Node 0 PCI segments 0- 3: pci_generic_ecam_ops (ECAM-compliant)
NUMA Node 0 PCI segments 4- 9: thunder_pem_ecam_ops (MCFG quirk)
NUMA Node 1 PCI segments 10-13: pci_generic_ecam_ops (ECAM-compliant)
NUMA Node 1 PCI segments 14-19: thunder_pem_ecam_ops (MCFG quirk)
[bhelgaas: adapt to use acpi_get_rc_resources(), update Makefile/ifdefs so
quirk doesn't depend on CONFIG_PCI_HOST_THUNDER_PEM]
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/acpi/pci_mcfg.c')
| -rw-r--r-- | drivers/acpi/pci_mcfg.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c index dd16224..17cbb07 100644 --- a/drivers/acpi/pci_mcfg.c +++ b/drivers/acpi/pci_mcfg.c @@ -74,6 +74,25 @@ static struct mcfg_fixup mcfg_quirks[] = { HISI_QUAD_DOM("HIP07 ", 4, &hisi_pcie_ops), HISI_QUAD_DOM("HIP07 ", 8, &hisi_pcie_ops), HISI_QUAD_DOM("HIP07 ", 12, &hisi_pcie_ops), + +#define THUNDER_PEM_RES(addr, node) \ + DEFINE_RES_MEM((addr) + ((u64) (node) << 44), 0x39 * SZ_16M) +#define THUNDER_PEM_QUIRK(rev, node) \ + { "CAVIUM", "THUNDERX", rev, 4 + (10 * (node)), MCFG_BUS_ANY, \ + &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x88001f000000UL, node) }, \ + { "CAVIUM", "THUNDERX", rev, 5 + (10 * (node)), MCFG_BUS_ANY, \ + &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x884057000000UL, node) }, \ + { "CAVIUM", "THUNDERX", rev, 6 + (10 * (node)), MCFG_BUS_ANY, \ + &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x88808f000000UL, node) }, \ + { "CAVIUM", "THUNDERX", rev, 7 + (10 * (node)), MCFG_BUS_ANY, \ + &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x89001f000000UL, node) }, \ + { "CAVIUM", "THUNDERX", rev, 8 + (10 * (node)), MCFG_BUS_ANY, \ + &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x894057000000UL, node) }, \ + { "CAVIUM", "THUNDERX", rev, 9 + (10 * (node)), MCFG_BUS_ANY, \ + &thunder_pem_ecam_ops, THUNDER_PEM_RES(0x89808f000000UL, node) } + /* SoC pass2.x */ + THUNDER_PEM_QUIRK(1, 0), + THUNDER_PEM_QUIRK(1, 1), }; static char mcfg_oem_id[ACPI_OEM_ID_SIZE]; |
