b30e2bfe34
Only bus_sp5100[0] is evaluated. Change-Id: I42a5040ea70a84fb674f2c616c6eba7b23dcdc29 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/30645 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
123 lines
3 KiB
C
123 lines
3 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2010 Advanced Micro Devices, Inc.
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* Copyright (C) 2015 Raptor Engineering
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <console/console.h>
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#include <device/pci_ids.h>
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#include <device/pci.h>
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#include <string.h>
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#include <stdint.h>
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#include <arch/pirq_routing.h>
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#include <cpu/amd/amdfam10_sysconf.h>
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/* Free irqs are 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, and 15 */
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#define IRQBM ((1 << 3)|(1 << 4)|(1 << 5)|(1 << 6)|(1 << 7)|(1 << 9)|(1 << 10)|(1 << 11)|(1 << 12)|(1 << 14)|(1 << 15))
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#define LNKA 1
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#define LNKB 2
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#define LNKC 3
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#define LNKD 4
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/*
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* For simplicity map LNK[E-H] to LNK[A-D].
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* This also means we are 82C596 compatible.
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* Needs 0:11.0 0x46[4] set to 0.
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*/
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#define LNKE 1
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#define LNKF 2
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#define LNKG 3
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#define LNKH 4
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static void write_pirq_info(struct irq_info *pirq_info, u8 bus, u8 devfn,
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u8 link0, u16 bitmap0, u8 link1, u16 bitmap1,
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u8 link2, u16 bitmap2, u8 link3, u16 bitmap3,
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u8 slot, u8 rfu)
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{
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pirq_info->bus = bus;
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pirq_info->devfn = devfn;
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pirq_info->irq[0].link = link0;
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pirq_info->irq[0].bitmap = bitmap0;
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pirq_info->irq[1].link = link1;
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pirq_info->irq[1].bitmap = bitmap1;
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pirq_info->irq[2].link = link2;
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pirq_info->irq[2].bitmap = bitmap2;
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pirq_info->irq[3].link = link3;
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pirq_info->irq[3].bitmap = bitmap3;
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pirq_info->slot = slot;
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pirq_info->rfu = rfu;
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}
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unsigned long write_pirq_routing_table(unsigned long addr)
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{
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struct irq_routing_table *pirq;
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struct irq_info *pirq_info;
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u32 slot_num;
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u8 *v;
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u8 sum = 0;
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int i;
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/* Align the table to be 16 byte aligned. */
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addr += 15;
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addr &= ~15;
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/* This table must be between 0xf0000 & 0x100000 */
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printk(BIOS_INFO, "Writing IRQ routing tables to 0x%lx...", addr);
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pirq = (void *)(addr);
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v = (u8 *) (addr);
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pirq->signature = PIRQ_SIGNATURE;
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pirq->version = PIRQ_VERSION;
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/* Where the interrupt router resides */
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pirq->rtr_bus = pirq_router_bus;
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pirq->rtr_devfn = PCI_DEVFN(0x14, 4);
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pirq->exclusive_irqs = 0;
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pirq->rtr_vendor = PCI_VENDOR_ID_ATI;
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pirq->rtr_device = PCI_DEVICE_ID_ATI_SB700_PCI;
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pirq->miniport_data = 0;
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memset(pirq->rfu, 0, sizeof(pirq->rfu));
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pirq_info = (void *)(&pirq->checksum + 1);
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slot_num = 0;
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/* pci bridge */
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write_pirq_info(pirq_info, pirq_router_bus,
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PCI_DEVFN(0x14, 4), LNKA, IRQBM, LNKB,
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IRQBM, LNKC, IRQBM, LNKD, IRQBM, 0, 0);
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pirq_info++;
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slot_num++;
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pirq->size = 32 + 16 * slot_num;
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for (i = 0; i < pirq->size; i++)
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sum += v[i];
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sum = pirq->checksum - sum;
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if (sum != pirq->checksum) {
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pirq->checksum = sum;
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}
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printk(BIOS_INFO, "done.\n");
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return (unsigned long)pirq_info;
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}
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