| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/pirq_routing.h> |
| #include <console/console.h> |
| #include <device/pci_def.h> |
| #include <string.h> |
| |
| static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn, |
| u8 link0, u16 bitmap0, u8 link1, u16 bitmap1, |
| u8 link2, u16 bitmap2, u8 link3, u16 bitmap3, u8 slot, u8 rfu) |
| { |
| pirq_info->bus = bus; |
| pirq_info->devfn = devfn; |
| pirq_info->irq[0].link = link0; |
| pirq_info->irq[0].bitmap = bitmap0; |
| pirq_info->irq[1].link = link1; |
| pirq_info->irq[1].bitmap = bitmap1; |
| pirq_info->irq[2].link = link2; |
| pirq_info->irq[2].bitmap = bitmap2; |
| pirq_info->irq[3].link = link3; |
| pirq_info->irq[3].bitmap = bitmap3; |
| pirq_info->slot = slot; |
| pirq_info->rfu = rfu; |
| } |
| |
| unsigned long write_pirq_routing_table(unsigned long addr) |
| { |
| struct irq_routing_table *pirq; |
| struct irq_info *pirq_info; |
| u32 slot_num; |
| |
| u8 sum = 0; |
| int i; |
| |
| /* Align the table to be 16 byte aligned. */ |
| addr = ALIGN_UP(addr, 16); |
| |
| /* This table must be between 0xf0000 & 0x100000 */ |
| printk(BIOS_INFO, "Writing IRQ routing tables to 0x%lx...", addr); |
| |
| pirq = (void *)(addr); |
| |
| pirq->signature = PIRQ_SIGNATURE; |
| pirq->version = PIRQ_VERSION; |
| |
| pirq->rtr_bus = 0; |
| pirq->rtr_devfn = PCI_DEVFN(0x14, 4); |
| |
| pirq->exclusive_irqs = 0; |
| |
| pirq->rtr_vendor = 0x1002; |
| pirq->rtr_device = 0x4384; |
| |
| pirq->miniport_data = 0; |
| |
| memset(pirq->rfu, 0, sizeof(pirq->rfu)); |
| |
| pirq_info = (void *)(&pirq->slots); |
| slot_num = 0; |
| |
| /* pci bridge */ |
| write_pirq_info(pirq_info, 0, PCI_DEVFN(0x14, 4), |
| 0x1, 0xdef8, 0x2, 0xdef8, 0x3, 0xdef8, 0x4, 0xdef8, 0, 0); |
| pirq_info++; |
| |
| slot_num++; |
| |
| pirq->size = 32 + 16 * slot_num; |
| |
| { |
| const u8 *const v = (u8 *)(pirq); |
| for (i = 0; i < pirq->size; i++) |
| sum += v[i]; |
| } |
| |
| sum = pirq->checksum - sum; |
| |
| if (sum != pirq->checksum) |
| pirq->checksum = sum; |
| |
| printk(BIOS_INFO, "%s done.\n", __func__); |
| |
| return (unsigned long)pirq_info; |
| } |