| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2010 Advanced Micro Devices, Inc. |
| * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering |
| * |
| * 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; version 2 of the License. |
| * |
| * 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/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <device/pci_ops.h> |
| #include <arch/ioapic.h> |
| #include "sr5650.h" |
| |
| /* Table 6-6 Recommended Interrupt Routing Configuration */ |
| typedef struct _apic_device_info { |
| u8 group; |
| u8 swizzle; |
| u8 pin; |
| } apic_device_info; |
| |
| #define ABCD 0 |
| #define BCDA 1 |
| #define CDAB 2 |
| #define DABC 3 |
| |
| static const apic_device_info default_apic_device_info_t [] = { |
| /* Group Swizzling Port Int Pin */ |
| [0] = {0, 0, 31}, /* HT */ |
| [1] = {0, 0, 31}, /* IOMMU */ |
| [2] = {0, ABCD, 28}, /* Dev2 Grp0 [Int - 0..3] */ |
| [3] = {1, ABCD, 28}, /* Dev3 Grp1 [Int - 4..7] */ |
| [4] = {5, ABCD, 28}, /* Dev4 Grp5 [Int - 20..23] */ |
| [5] = {5, CDAB, 28}, /* Dev5 Grp5 [Int - 20..23] */ |
| [6] = {6, BCDA, 29}, /* Dev6 Grp6 [Int - 24..27] */ |
| [7] = {6, CDAB, 29}, /* Dev7 Grp6 [Int - 24..27] */ |
| [8] = {0, 0, 0 }, /* Reserved */ |
| [9] = {6, ABCD, 29}, /* Dev9 Grp6 [Int - 24..27] */ |
| [10] = {5, BCDA, 30}, /* Dev10 Grp5 [Int - 20..23] */ |
| [11] = {2, ABCD, 30}, /* Dev11 Grp2 [Int - 8..11] */ |
| [12] = {3, ABCD, 30}, /* Dev12 Grp3 [Int - 12..15] */ |
| [13] = {4, ABCD, 30} /* Dev13 Grp4 [Int - 16..19] */ |
| }; |
| |
| /* These define names are common, so undefine them to avoid potential issues in other code */ |
| #undef ABCD |
| #undef BCDA |
| #undef CDAB |
| #undef DABC |
| |
| /* Init APIC of sr5690 */ |
| static void sr5690_apic_init(struct device *dev) |
| { |
| u32 dword; |
| const apic_device_info *entry = default_apic_device_info_t; |
| |
| /* rpr6.2.(2). Write to the IOAPIC Features Enable register */ |
| pci_write_config32(dev, 0xF8, 0x0); |
| pci_write_config32(dev, 0xFC, 0x1F); |
| /* rpr6.2.(3). Write to the remaining interrupt routing registers */ |
| |
| /* IOAPICCMISCIND:0x3, group & swizzle of Dev 2,3,4,5 */ |
| dword = (entry[2].group | entry[2].swizzle << 4) << 0 | |
| (entry[3].group | entry[3].swizzle << 4) << 8 | |
| (entry[4].group | entry[4].swizzle << 4) << 16 | |
| (entry[5].group | entry[5].swizzle << 4) << 24; |
| pci_write_config32(dev, 0xF8, 0x3); |
| pci_write_config32(dev, 0xFC, dword); |
| |
| /* IOAPICCMISCIND:0x4, group & swizzle of Dev 6,7,9,10 */ |
| dword = (entry[6].group | entry[6].swizzle << 4) << 0 | |
| (entry[7].group | entry[7].swizzle << 4) << 8 | |
| (entry[9].group | entry[9].swizzle << 4) << 16 | |
| (entry[10].group | entry[10].swizzle << 4) << 24; |
| pci_write_config32(dev, 0xF8, 0x4); |
| pci_write_config32(dev, 0xFC, dword); |
| |
| /* IOAPICCMISCIND:0x5, group & swizzle of Dev 11,12,13 */ |
| dword = (entry[11].group | entry[11].swizzle << 4) << 0 | |
| (entry[12].group | entry[12].swizzle << 4) << 8 | |
| (entry[13].group | entry[13].swizzle << 4) << 16; |
| pci_write_config32(dev, 0xF8, 0x5); |
| pci_write_config32(dev, 0xFC, dword); |
| |
| /* IOAPICCMISCIND:0x6, pin map of dev 2,3,4,5 */ |
| dword = entry[2].pin | |
| entry[3].pin << 8 | |
| entry[4].pin << 16| |
| entry[5].pin << 24; |
| pci_write_config32(dev, 0xF8, 0x6); |
| pci_write_config32(dev, 0xFC, dword); |
| |
| /* IOAPICCMISCIND:0x7, pin map of dev 6,7,8,9 */ |
| dword = entry[6].pin | |
| entry[7].pin << 8 | |
| entry[8].pin << 16| |
| entry[9].pin << 24; |
| pci_write_config32(dev, 0xF8, 0x7); |
| pci_write_config32(dev, 0xFC, dword); |
| |
| /* IOAPICCMISCIND:0x8, pin map of dev 10,11,12,13 */ |
| dword = entry[10].pin | |
| entry[11].pin << 8 | |
| entry[12].pin << 16| |
| entry[13].pin << 24; |
| pci_write_config32(dev, 0xF8, 0x8); |
| pci_write_config32(dev, 0xFC, dword); |
| |
| /* IOAPICCMISCIND:0x9, pin map of ht, iommu */ |
| dword = entry[0].pin | entry[1].pin << 8; |
| pci_write_config32(dev, 0xF8, 0x9); |
| pci_write_config32(dev, 0xFC, dword); |
| |
| pci_write_config32(dev, 0xF8, 0x1); |
| dword = pci_read_config32(dev, 0xFC) & 0xfffffff0; |
| /* TODO: On SR56x0/SP5100 board, the IOAPIC on SR56x0 is the |
| * 2nd one. We need to check if it also is on your board. */ |
| setup_ioapic((void *)dword, 1); |
| } |
| |
| static void pcie_init(struct device *dev) |
| { |
| /* Enable pci error detecting */ |
| u32 dword; |
| |
| printk(BIOS_INFO, "pcie_init in sr5650_ht.c\n"); |
| |
| /* System error enable */ |
| dword = pci_read_config32(dev, 0x04); |
| dword |= (1 << 8); /* System error enable */ |
| dword |= (1 << 30); /* Clear possible errors */ |
| pci_write_config32(dev, 0x04, dword); |
| |
| /* |
| * 1 is APIC enable |
| * 18 is enable nb to accept A4 interrupt request from SB. |
| */ |
| dword = pci_read_config32(dev, 0x4C); |
| dword |= 1 << 1 | 1 << 18; /* Clear possible errors */ |
| pci_write_config32(dev, 0x4C, dword); |
| |
| sr5690_apic_init(dev); |
| } |
| |
| static void sr5690_read_resource(struct device *dev) |
| { |
| pci_dev_read_resources(dev); |
| |
| /* rpr6.2.(1). Write the Base Address Register (BAR) */ |
| pci_write_config32(dev, 0xF8, 0x1); /* set IOAPIC's index as 1 and make sure no one changes it. */ |
| pci_get_resource(dev, 0xFC); /* APIC located in sr5690 */ |
| |
| compact_resources(dev); |
| } |
| |
| /* If IOAPIC's index changes, we should replace the pci_dev_set_resource(). */ |
| static void sr5690_set_resources(struct device *dev) |
| { |
| pci_write_config32(dev, 0xF8, 0x1); /* set IOAPIC's index as 1 and make sure no one changes it. */ |
| pci_dev_set_resources(dev); |
| } |
| |
| static struct pci_operations lops_pci = { |
| .set_subsystem = pci_dev_set_subsystem, |
| }; |
| |
| static struct device_operations ht_ops = { |
| .read_resources = sr5690_read_resource, |
| .set_resources = sr5690_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = pcie_init, |
| .scan_bus = 0, |
| .ops_pci = &lops_pci, |
| }; |
| |
| static const struct pci_driver ht_driver_sr5690 __pci_driver = { |
| .ops = &ht_ops, |
| .vendor = PCI_VENDOR_ID_ATI, |
| .device = PCI_DEVICE_ID_AMD_SR5690_HT, |
| }; |
| |
| static const struct pci_driver ht_driver_sr5670 __pci_driver = { |
| .ops = &ht_ops, |
| .vendor = PCI_VENDOR_ID_ATI, |
| .device = PCI_DEVICE_ID_AMD_SR5670_HT, |
| }; |
| |
| static const struct pci_driver ht_driver_sr5650 __pci_driver = { |
| .ops = &ht_ops, |
| .vendor = PCI_VENDOR_ID_ATI, |
| .device = PCI_DEVICE_ID_AMD_SR5650_HT, |
| }; |