diff options
Diffstat (limited to 'src/southbridge/sis/sis966/sis966_pci.c')
| -rw-r--r-- | src/southbridge/sis/sis966/sis966_pci.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/southbridge/sis/sis966/sis966_pci.c b/src/southbridge/sis/sis966/sis966_pci.c new file mode 100644 index 0000000000..db1d986a08 --- /dev/null +++ b/src/southbridge/sis/sis966/sis966_pci.c @@ -0,0 +1,109 @@ +/* + * This file is part of the LinuxBIOS project. + * + * Copyright (C) 2004 Tyan Computer + * Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer. + * Copyright (C) 2006,2007 AMD + * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD. + * Copyright (C) 2007 Silicon Integrated Systems Corp. (SiS) + * Written by Morgan Tsai <my_tsai@sis.com> for SiS. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +#include "sis966.h" + +static void pci_init(struct device *dev) +{ + + uint32_t dword; + uint16_t word; +#if CONFIG_PCI_64BIT_PREF_MEM == 1 + device_t pci_domain_dev; + struct resource *mem1, *mem2; +#endif + + /* 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); + +#if 1 + //only need (a01,xx] + word = pci_read_config16(dev, 0x48); + word |= (1<<0); /* MRL2MRM */ + word |= (1<<2); /* MR2MRM */ + pci_write_config16(dev, 0x48, word); +#endif + +#if 1 + dword = pci_read_config32(dev, 0x4c); + dword |= 0x00440000; /*TABORT_SER_ENABLE Park Last Enable.*/ + pci_write_config32(dev, 0x4c, dword); +#endif + +#if CONFIG_PCI_64BIT_PREF_MEM == 1 + pci_domain_dev = dev->bus->dev; + while(pci_domain_dev) { + if(pci_domain_dev->path.type == DEVICE_PATH_PCI_DOMAIN) break; + pci_domain_dev = pci_domain_dev->bus->dev; + } + + if(!pci_domain_dev) return; // impossiable + mem1 = find_resource(pci_domain_dev, 1); // prefmem, it could be 64bit + mem2 = find_resource(pci_domain_dev, 2); // mem + if(mem1->base > mem2->base) { + dword = mem2->base & (0xffff0000UL); + printk_debug("PCI DOMAIN mem2 base = 0x%010Lx\n", mem2->base); + } else { + dword = mem1->base & (0xffff0000UL); + printk_debug("PCI DOMAIN mem1 (prefmem) base = 0x%010Lx\n", mem1->base); + } +#else + dword = dev_root.resource[1].base & (0xffff0000UL); + printk_debug("dev_root mem base = 0x%010Lx\n", dev_root.resource[1].base); +#endif + printk_debug("[0x50] <-- 0x%08x\n", dword); + pci_write_config32(dev, 0x50, dword); //TOM + +} + +static struct pci_operations lops_pci = { + .set_subsystem = 0, +}; + +static struct device_operations pci_ops = { + .read_resources = pci_bus_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_bus_enable_resources, + .init = pci_init, + .scan_bus = pci_scan_bridge, +// .enable = sis966_enable, + .reset_bus = pci_bus_reset, + .ops_pci = &lops_pci, +}; + +static struct pci_driver pci_driver __pci_driver = { + .ops = &pci_ops, + .vendor = PCI_VENDOR_ID_SIS, + .device = PCI_DEVICE_ID_SIS_SIS966_PCI, +}; + |