diff options
Diffstat (limited to 'src/soc/amd/picasso/pcie_gpp.c')
| -rw-r--r-- | src/soc/amd/picasso/pcie_gpp.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/soc/amd/picasso/pcie_gpp.c b/src/soc/amd/picasso/pcie_gpp.c index 1b651182a4..ca368f94b1 100644 --- a/src/soc/amd/picasso/pcie_gpp.c +++ b/src/soc/amd/picasso/pcie_gpp.c @@ -2,10 +2,12 @@ #include <acpi/acpigen.h> #include <assert.h> +#include <amdblocks/amd_pci_util.h> #include <device/device.h> #include <device/pci.h> #include <device/pciexp.h> #include <device/pci_ids.h> +#include <soc/pci.h> #include <soc/pci_devs.h> #include <stdio.h> @@ -34,6 +36,26 @@ static const struct pci_routing pci_routing_table[] = { {PCIE_GPP_B_DEVFN, 7, "CDAB"}, }; +/* + * This data structure is populated from the raw data above. It is used + * by amd/common/block/pci/amd_pci_util to write the PCI_INT_LINE register + * to each PCI device. + */ +static struct pirq_struct pirq_data[] = { + { PCIE_GPP_0_DEVFN }, + { PCIE_GPP_1_DEVFN }, + { PCIE_GPP_2_DEVFN }, + { PCIE_GPP_3_DEVFN }, + { PCIE_GPP_4_DEVFN }, + { PCIE_GPP_5_DEVFN }, + { PCIE_GPP_6_DEVFN }, + { PCIE_GPP_A_DEVFN }, + { PCIE_GPP_B_DEVFN }, +}; + +_Static_assert(ARRAY_SIZE(pci_routing_table) == ARRAY_SIZE(pirq_data), + "PCI and PIRQ tables must be the same size"); + static const struct pci_routing *get_pci_routing(unsigned int devfn) { for (size_t i = 0; i < ARRAY_SIZE(pci_routing_table); ++i) { @@ -53,6 +75,29 @@ static unsigned int calculate_irq(const struct pci_routing *pci_routing, unsigne return irq_index; } +void populate_pirq_data(void) +{ + const struct pci_routing *pci_routing; + struct pirq_struct *pirq; + unsigned int irq_index; + + for (size_t i = 0; i < ARRAY_SIZE(pirq_data); ++i) { + pirq = &pirq_data[i]; + pci_routing = get_pci_routing(pirq->devfn); + if (!pci_routing) + die("%s: devfn %u not found\n", __func__, pirq->devfn); + + for (size_t j = 0; j < 4; ++j) { + irq_index = calculate_irq(pci_routing, j); + + pirq->PIN[j] = irq_index % 8; + } + } + + pirq_data_ptr = pirq_data; + pirq_data_size = ARRAY_SIZE(pirq_data); +} + static const char *pcie_gpp_acpi_name(const struct device *dev) { if (dev->path.type != DEVICE_PATH_PCI) |