asus/k8v-x: Add PIRQ tables to init PCI IRQ config

Pulled getpir from the attic and used data provided by it
to create the table a bit more programmatically and
added the AGP slot so the video card is given an IRQ

Change-Id: Id3dc1a77ac6382405f5f36707994287e84e1168b
Signed-off-by: Urja Rannikko <urjaman@gmail.com>
Reviewed-on: http://review.coreboot.org/12350
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

2 files changed, 152 insertions, 0 deletions

diff --git a/src/mainboard/asus/k8v-x/Kconfig b/src/mainboard/asus/k8v-x/Kconfig
index 52bf661f79..4eb1bec62b 100644
--- a/src/mainboard/asus/k8v-x/Kconfig
+++ b/src/mainboard/asus/k8v-x/Kconfig
@@ -9,12 +9,14 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select SOUTHBRIDGE_VIA_SUBTYPE_K8T800_OLD
 	select SUPERIO_WINBOND_W83697HF
 	select HAVE_OPTION_TABLE
+	select HAVE_PIRQ_TABLE
 	select HAVE_ACPI_TABLES
 	select HAVE_MP_TABLE
 	select BOARD_ROMSIZE_KB_512
 	select RAMINIT_SYSINFO
 	select SET_FIDVID
 	select K8_FORCE_2T_DRAM_TIMING
+	select PIRQ_ROUTE
 
 config MAINBOARD_DIR
 	string
@@ -60,4 +62,8 @@ config HT_CHAIN_UNITID_BASE
 	hex
 	default 0x0
 
+config IRQ_SLOT_COUNT
+	int
+	default 11
+
 endif # BOARD_ASUS_K8V_X
diff --git a/src/mainboard/asus/k8v-x/irq_tables.c b/src/mainboard/asus/k8v-x/irq_tables.c
new file mode 100644
index 0000000000..51b7dd1198
--- /dev/null
+++ b/src/mainboard/asus/k8v-x/irq_tables.c
@@ -0,0 +1,146 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Urja Rannikko <urjaman@gmail.com>
+ *
+ * Code based on KFSN4-DRE irq_tables.c:
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ *
+ * Copyright (C) 2007 AMD
+ * (Written by Yinghai Lu <yinghailu@amd.com> for AMD)
+ * Copyright (C) 2007 Philipp Degler <pdegler@rumms.uni-mannheim.de>
+ * (Thanks to LSRA University of Mannheim for their support)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <console/console.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <string.h>
+#include <stdint.h>
+#include <arch/pirq_routing.h>
+
+static void write_pirq_info(struct irq_info *pirq_info, uint8_t bus,
+			    uint8_t devfn, uint8_t link0, uint8_t link1,  uint8_t link2,
+			    uint8_t link3, uint8_t slot, uint8_t rfu)
+{
+	const uint16_t valid_irqs = 0xccb8;
+	pirq_info->bus = bus;
+	pirq_info->devfn = devfn;
+	pirq_info->irq[0].link = link0;
+	pirq_info->irq[0].bitmap = link0 ? valid_irqs : 0;
+	pirq_info->irq[1].link = link1;
+	pirq_info->irq[1].bitmap = link1 ? valid_irqs : 0;
+	pirq_info->irq[2].link = link2;
+	pirq_info->irq[2].bitmap = link2 ? valid_irqs : 0;
+	pirq_info->irq[3].link = link3;
+	pirq_info->irq[3].bitmap = link3 ? valid_irqs : 0;
+	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;
+	uint8_t *v, sum = 0;
+	unsigned int slot_num = 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);
+	v = (uint8_t *)(addr);
+
+	pirq->signature = PIRQ_SIGNATURE;
+	pirq->version = PIRQ_VERSION;
+	pirq->rtr_bus = 0;
+	pirq->rtr_devfn = ((0x11) << 3) | 0;
+	pirq->exclusive_irqs = 0;
+	pirq->rtr_vendor = PCI_VENDOR_ID_VIA;
+	pirq->rtr_device = PCI_DEVICE_ID_VIA_VT8237R_LPC;
+	pirq->miniport_data = 0;
+
+	memset(pirq->rfu, 0, sizeof(pirq->rfu));
+
+	pirq_info = (void *)(&pirq->checksum + 1);
+
+	/* AGP Bridge. */
+	write_pirq_info(pirq_info, 0, (0x01 << 3) | 0,  1, 2, 0, 0,  0, 0);
+	pirq_info++;
+	slot_num++;
+
+	/* ISA Bridge + AC97 + MC97 */
+	write_pirq_info(pirq_info, 0, (0x11 << 3) | 0,  0, 0, 3, 0,  0, 0);
+	pirq_info++;
+	slot_num++;
+
+	/* PATA and SATA. */
+	write_pirq_info(pirq_info, 0, (0x0f << 3) | 0,  1, 2, 3, 5,  0, 0);
+	pirq_info++;
+	slot_num++;
+
+	/* USB (UHCI and EHCI) */
+	write_pirq_info(pirq_info, 0, (0x10 << 3) | 0,  1, 2, 3, 5,  0, 0);
+	pirq_info++;
+	slot_num++;
+
+	/* 5 PCI Slots */
+	write_pirq_info(pirq_info, 0, (0x0b << 3) | 0,  1, 2, 3, 5,  1, 0);
+	pirq_info++;
+	slot_num++;
+
+	write_pirq_info(pirq_info, 0, (0x0c << 3) | 0,  2, 3, 5, 1,  2, 0);
+	pirq_info++;
+	slot_num++;
+
+	write_pirq_info(pirq_info, 0, (0x0d << 3) | 0,  3, 5, 1, 2,  3, 0);
+	pirq_info++;
+	slot_num++;
+
+	write_pirq_info(pirq_info, 0, (0x0e << 3) | 0,  5, 1, 2, 3,  4, 0);
+	pirq_info++;
+	slot_num++;
+
+	write_pirq_info(pirq_info, 0, (0x09 << 3) | 0,  1, 2, 3, 5,  5, 0);
+	pirq_info++;
+	slot_num++;
+
+	/* Ethernet */
+	write_pirq_info(pirq_info, 0, (0x0a << 3) | 0,  2, 0, 0, 0,  0, 0);
+	pirq_info++;
+	slot_num++;
+
+	/* AGP Slot. */
+	write_pirq_info(pirq_info, 1, (0x00 << 3) | 0,  1, 2, 0, 0,  6, 0);
+	pirq_info++;
+	slot_num++;
+
+	pirq->size = 32 + 16 * slot_num;
+
+	for (i = 0; i < pirq->size; i++)
+		sum += v[i];
+
+	sum = pirq->checksum - sum;
+	if (sum != pirq->checksum)
+		pirq->checksum = sum;
+
+	printk(BIOS_INFO, "done.\n");
+
+	/* Call copy for side effects: setting PCI IRQ registers. Hack? */
+	return copy_pirq_routing_table(addr, pirq);
+}