| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/amd_pci_util.h> |
| #include <commonlib/helpers.h> |
| #include <device/device.h> |
| #include <soc/acpi.h> |
| #include <string.h> |
| #include <types.h> |
| |
| /* |
| * These arrays set up the FCH PCI_INTR registers 0xC00/0xC01. |
| * This table is responsible for physically routing the PIC and |
| * IOAPIC IRQs to the different PCI devices on the system. It |
| * is read and written via registers 0xC00/0xC01 as an |
| * Index/Data pair. These values are chipset and mainboard |
| * dependent and should be updated accordingly. |
| */ |
| static uint8_t fch_pic_routing[0x80]; |
| static uint8_t fch_apic_routing[0x80]; |
| |
| _Static_assert(sizeof(fch_pic_routing) == sizeof(fch_apic_routing), |
| "PIC and APIC FCH interrupt tables must be the same size"); |
| |
| /* |
| * This controls the device -> IRQ routing. |
| * |
| * Hardcoded IRQs: |
| * 0: timer < soc/amd/common/acpi/lpc.asl |
| * 1: i8042 - Keyboard |
| * 2: cascade |
| * 8: rtc0 <- soc/amd/common/acpi/lpc.asl |
| * 9: acpi <- soc/amd/common/acpi/lpc.asl |
| */ |
| static const struct fch_irq_routing { |
| uint8_t intr_index; |
| uint8_t pic_irq_num; |
| uint8_t apic_irq_num; |
| } chausie_fch[] = { |
| { PIRQ_A, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_B, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_C, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_D, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_E, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_F, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_G, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_H, PIRQ_NC, PIRQ_NC }, |
| |
| { PIRQ_SCI, ACPI_SCI_IRQ, ACPI_SCI_IRQ }, |
| { PIRQ_SD, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_SDIO, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_EMMC, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_GPIO, 7, 7 }, |
| { PIRQ_I2C2, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_I2C3, PIRQ_NC, PIRQ_NC }, |
| { PIRQ_UART0, 4, 4 }, |
| { PIRQ_UART1, 3, 3 }, |
| |
| /* The MISC registers are not interrupt numbers */ |
| { PIRQ_MISC, 0xfa, 0x00 }, |
| { PIRQ_MISC0, 0x91, 0x00 }, |
| { PIRQ_HPET_L, 0x00, 0x00 }, |
| { PIRQ_HPET_H, 0x00, 0x00 }, |
| }; |
| |
| static void init_tables(void) |
| { |
| const struct fch_irq_routing *entry; |
| int i; |
| |
| memset(fch_pic_routing, PIRQ_NC, sizeof(fch_pic_routing)); |
| memset(fch_apic_routing, PIRQ_NC, sizeof(fch_apic_routing)); |
| |
| for (i = 0; i < ARRAY_SIZE(chausie_fch); i++) { |
| entry = chausie_fch + i; |
| fch_pic_routing[entry->intr_index] = entry->pic_irq_num; |
| fch_apic_routing[entry->intr_index] = entry->apic_irq_num; |
| } |
| } |
| |
| static void pirq_setup(void) |
| { |
| intr_data_ptr = fch_apic_routing; |
| picr_data_ptr = fch_pic_routing; |
| } |
| |
| static void mainboard_init(void *chip_info) |
| { |
| } |
| |
| static void mainboard_enable(struct device *dev) |
| { |
| init_tables(); |
| /* Initialize the PIRQ data structures for consumption */ |
| pirq_setup(); |
| } |
| |
| struct chip_operations mainboard_ops = { |
| .init = mainboard_init, |
| .enable_dev = mainboard_enable, |
| }; |