From 9ef07d8623d308b2bc764a35aa6380f3d16e6f90 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Mon, 13 Jun 2016 13:48:58 -0500 Subject: nb/amd/pi/00730F01: Add initial native IVRS support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - Iteration over devices in add_ivrs_device_entries were simplified to decrease complexity. - Code was structured to satisfy checkpatch Change-Id: I1ae789f75363435accd14a1b556e1570f43f94c4 Signed-off-by: Timothy Pearson Signed-off-by: Piotr Król Reviewed-on: https://review.coreboot.org/15164 Reviewed-by: Patrick Georgi Tested-by: build bot (Jenkins) --- src/northbridge/amd/pi/00730F01/northbridge.c | 224 ++++++++++++++++++++++++-- 1 file changed, 212 insertions(+), 12 deletions(-) (limited to 'src/northbridge/amd/pi') diff --git a/src/northbridge/amd/pi/00730F01/northbridge.c b/src/northbridge/amd/pi/00730F01/northbridge.c index cfac490b1f..2b81998445 100644 --- a/src/northbridge/amd/pi/00730F01/northbridge.c +++ b/src/northbridge/amd/pi/00730F01/northbridge.c @@ -2,6 +2,8 @@ * This file is part of the coreboot project. * * Copyright (C) 2012 Advanced Micro Devices, Inc. + * Copyright (C) 2016 Raptor Engineering, LLC + * Copyright (C) 2018 3mdeb Embedded Systems Consulting * * 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 @@ -437,6 +439,208 @@ static unsigned long acpi_fill_hest(acpi_hest_t *hest) return (unsigned long)current; } +static void add_ivhd_dev_entry(struct device *parent, struct device *dev, + unsigned long *current, uint16_t *length, + uint8_t type, uint8_t data) +{ + uint8_t *p; + p = (uint8_t *) *current; + + if (type == 0x2) { + /* Entry type */ + p[0] = type; + /* Device */ + p[1] = dev->path.pci.devfn; + /* Bus */ + p[2] = dev->bus->secondary; + /* Data */ + p[3] = data; + /* [4:7] Padding */ + p[4] = 0x0; + p[5] = 0x0; + p[6] = 0x0; + p[7] = 0x0; + *length += 8; + *current += 8; + } else if (type == 0x42) { + /* Entry type */ + p[0] = type; + /* Device */ + p[1] = dev->path.pci.devfn; + /* Bus */ + p[2] = dev->bus->secondary; + /* Data */ + p[3] = 0x0; + /* Reserved */ + p[4] = 0x0; + /* Device */ + p[5] = parent->path.pci.devfn; + /* Bus */ + p[6] = parent->bus->secondary; + /* Reserved */ + p[7] = 0x0; + *length += 8; + *current += 8; + } +} + +static void add_ivrs_device_entries(struct device *parent, struct device *dev, + unsigned int depth, int linknum, int8_t *root_level, + unsigned long *current, uint16_t *length) +{ + struct device *sibling; + struct bus *link; + unsigned int header_type; + unsigned int is_pcie; + + if (!root_level) { + root_level = malloc(sizeof(int8_t)); + *root_level = -1; + } + + if (dev->path.type == DEVICE_PATH_PCI) { + + if ((dev->bus->secondary == 0x0) && + (dev->path.pci.devfn == 0x0)) + *root_level = depth; + + if ((*root_level != -1) && (dev->enabled)) { + if (depth == *root_level) { + if (dev->path.pci.devfn == (0x14 << 3)) { + /* SMBUS controller */ + add_ivhd_dev_entry(parent, dev, current, length, 0x2, 0x97); + } else if (dev->path.pci.devfn != 0x2 && + dev->path.pci.devfn < (0x2 << 3)) { + /* FCH control device */ + } else { + /* Other devices */ + add_ivhd_dev_entry(parent, dev, current, length, 0x2, 0x0); + } + } else { + header_type = dev->hdr_type & 0x7f; + is_pcie = pci_find_capability(dev, PCI_CAP_ID_PCIE); + if (((header_type == PCI_HEADER_TYPE_NORMAL) || + (header_type == PCI_HEADER_TYPE_BRIDGE)) + && is_pcie) { + /* Device or Bridge is PCIe */ + add_ivhd_dev_entry(parent, dev, current, length, 0x2, 0x0); + } else if ((header_type == PCI_HEADER_TYPE_NORMAL) && + !is_pcie) { + add_ivhd_dev_entry(parent, dev, current, length, 0x42, 0x0); + /* Device is legacy PCI or PCI-X */ + } + } + } + } + + for (link = dev->link_list; link; link = link->next) + for (sibling = link->children; sibling; sibling = + sibling->sibling) + add_ivrs_device_entries(dev, sibling, depth + 1, depth, + root_level, current, length); + + free(root_level); +} + +unsigned long acpi_fill_ivrs_ioapic(acpi_ivrs_t *ivrs, unsigned long current) +{ + uint8_t *p; + + uint32_t apicid_sb800; + uint32_t apicid_northbridge; + + apicid_sb800 = CONFIG_MAX_CPUS; + apicid_northbridge = CONFIG_MAX_CPUS + 1; + + /* Describe NB IOAPIC */ + p = (uint8_t *)current; + p[0] = 0x48; /* Entry type */ + p[1] = 0; /* Device */ + p[2] = 0; /* Bus */ + p[3] = 0x0; /* Data */ + p[4] = apicid_northbridge; /* IOAPIC ID */ + p[5] = 0x0; /* Device 0 Function 0 */ + p[6] = 0x0; /* Northbridge bus */ + p[7] = 0x1; /* Variety */ + current += 8; + + /* Describe SB IOAPIC */ + p = (uint8_t *)current; + p[0] = 0x48; /* Entry type */ + p[1] = 0; /* Device */ + p[2] = 0; /* Bus */ + p[3] = 0xd7; /* Data */ + p[4] = apicid_sb800; /* IOAPIC ID */ + p[5] = 0x14 << 3; /* Device 0x14 Function 0 */ + p[6] = 0x0; /* Southbridge bus */ + p[7] = 0x1; /* Variety */ + current += 8; + + return current; +} + +static unsigned long acpi_fill_ivrs(acpi_ivrs_t *ivrs, unsigned long current) +{ + uint8_t *p; + + device_t nb_dev = dev_find_slot(0, PCI_DEVFN(0, 0)); + if (!nb_dev) { + + printk(BIOS_WARNING, "%s: G-series northbridge device not present!\n", __func__); + printk(BIOS_WARNING, "%s: IVRS table not generated...\n", __func__); + + return (unsigned long)ivrs; + } + + ivrs->iv_info = 0x0; + /* Maximum supported virtual address size */ + ivrs->iv_info |= (0x40 << 15); + /* Maximum supported physical address size */ + ivrs->iv_info |= (0x30 << 8); + /* Guest virtual address width */ + ivrs->iv_info |= (0x2 << 5); + + ivrs->ivhd.type = 0x10; + ivrs->ivhd.flags = 0x0e; + /* Enable ATS support */ + ivrs->ivhd.flags |= 0x10; + ivrs->ivhd.length = sizeof(struct acpi_ivrs_ivhd); + /* BDF :00.2 */ + ivrs->ivhd.device_id = 0x2 | (nb_dev->bus->secondary << 8); + /* Capability block 0x40 (type 0xf, "Secure device") */ + ivrs->ivhd.capability_offset = 0x40; + ivrs->ivhd.iommu_base_low = 0xfeb00000; + ivrs->ivhd.iommu_base_high = 0x0; + ivrs->ivhd.pci_segment_group = 0x0; + ivrs->ivhd.iommu_info = 0x0; + ivrs->ivhd.iommu_info |= (0x13 << 8); + ivrs->ivhd.iommu_feature_info = 0x0; + + /* Describe HPET */ + p = (uint8_t *)current; + p[0] = 0x48; /* Entry type */ + p[1] = 0; /* Device */ + p[2] = 0; /* Bus */ + p[3] = 0xd7; /* Data */ + p[4] = 0x0; /* HPET number */ + p[5] = 0x14 << 3; /* HPET device */ + p[6] = nb_dev->bus->secondary; /* HPET bus */ + p[7] = 0x2; /* Variety */ + ivrs->ivhd.length += 8; + current += 8; + + /* Describe PCI devices */ + add_ivrs_device_entries(NULL, all_devices, 0, -1, NULL, ¤t, + &ivrs->ivhd.length); + + /* Describe IOAPICs */ + unsigned long prev_current = current; + current = acpi_fill_ivrs_ioapic(ivrs, current); + ivrs->ivhd.length += (current - prev_current); + + return current; +} + static void northbridge_fill_ssdt_generator(struct device *device) { msr_t msr; @@ -466,7 +670,7 @@ static unsigned long agesa_write_acpi_tables(struct device *device, acpi_slit_t *slit; acpi_header_t *ssdt; acpi_header_t *alib; - acpi_header_t *ivrs; + acpi_ivrs_t *ivrs; acpi_hest_t *hest; /* HEST */ @@ -476,17 +680,13 @@ static unsigned long agesa_write_acpi_tables(struct device *device, acpi_add_table(rsdp, (void *)current); current += ((acpi_header_t *)current)->length; - current = ALIGN(current, 8); - printk(BIOS_DEBUG, "ACPI: * IVRS at %lx\n", current); - ivrs = agesawrapper_getlateinitptr(PICK_IVRS); - if (ivrs != NULL) { - memcpy((void *)current, ivrs, ivrs->length); - ivrs = (acpi_header_t *) current; - current += ivrs->length; - acpi_add_table(rsdp, ivrs); - } else { - printk(BIOS_DEBUG, " AGESA IVRS table NULL. Skipping.\n"); - } + /* IVRS */ + current = ALIGN(current, 8); + printk(BIOS_DEBUG, "ACPI: * IVRS at %lx\n", current); + ivrs = (acpi_ivrs_t *) current; + acpi_create_ivrs(ivrs, acpi_fill_ivrs); + current += ivrs->header.length; + acpi_add_table(rsdp, ivrs); /* SRAT */ current = ALIGN(current, 8); -- cgit v1.2.3