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Diffstat (limited to 'src/southbridge/sis/sis966/sis966.c')
-rw-r--r--src/southbridge/sis/sis966/sis966.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/src/southbridge/sis/sis966/sis966.c b/src/southbridge/sis/sis966/sis966.c
new file mode 100644
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+++ b/src/southbridge/sis/sis966/sis966.c
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+/*
+ * 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 <arch/io.h>
+
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "sis966.h"
+
+static uint32_t final_reg;
+
+static device_t find_lpc_dev( device_t dev, unsigned devfn)
+{
+
+ device_t lpc_dev;
+
+ lpc_dev = dev_find_slot(dev->bus->secondary, devfn);
+
+ if ( !lpc_dev ) return lpc_dev;
+
+if ((lpc_dev->vendor != PCI_VENDOR_ID_SIS) || (
+ (lpc_dev->device != PCI_DEVICE_ID_SIS_SIS966_LPC)
+ ) ) {
+ uint32_t id;
+ id = pci_read_config32(lpc_dev, PCI_VENDOR_ID);
+ if ( (id < (PCI_VENDOR_ID_SIS | (PCI_DEVICE_ID_SIS_SIS966_LPC << 16)))
+ ) {
+ lpc_dev = 0;
+ }
+ }
+
+ return lpc_dev;
+}
+
+void sis966_enable(device_t dev)
+{
+ device_t lpc_dev = 0;
+ device_t sm_dev = 0;
+ unsigned index = 0;
+ unsigned index2 = 0;
+ uint32_t reg_old, reg;
+ uint8_t byte;
+ unsigned deviceid;
+ unsigned vendorid;
+
+ struct southbridge_sis_sis966_config *conf;
+ conf = dev->chip_info;
+ int i;
+
+ unsigned devfn;
+
+ if(dev->device==0x0000) {
+ vendorid = pci_read_config32(dev, PCI_VENDOR_ID);
+ deviceid = (vendorid>>16) & 0xffff;
+// vendorid &= 0xffff;
+ } else {
+// vendorid = dev->vendor;
+ deviceid = dev->device;
+ }
+
+ devfn = (dev->path.u.pci.devfn) & ~7;
+ switch(deviceid) {
+ case PCI_DEVICE_ID_SIS_SIS966_HT:
+ return;
+
+ case PCI_DEVICE_ID_SIS_SIS966_SM2://?
+ index = 16;
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_USB:
+ devfn -= (1<<3);
+ index = 8;
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_EHCI:
+ devfn -= (1<<3);
+ index = 20;
+ break;
+/* case PCI_DEVICE_ID_SIS_SIS966_USB3:
+ devfn -= (1<<3);
+ index = 20;
+ break;
+*/
+ case PCI_DEVICE_ID_SIS_SIS966_NIC1: //two
+ case PCI_DEVICE_ID_SIS_SIS966_NIC_BRIDGE://two
+ devfn -= (7<<3);
+ index = 10;
+ for(i=0;i<2;i++) {
+ lpc_dev = find_lpc_dev(dev, devfn - (i<<3));
+ if(!lpc_dev) continue;
+ index -= i;
+ devfn -= (i<<3);
+ break;
+ }
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_AZA:
+ devfn -= (5<<3);
+ index = 11;
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_IDE:
+ devfn -= (3<<3);
+ index = 14;
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_SATA0: //three
+ case PCI_DEVICE_ID_SIS_SIS966_SATA1: //three
+ devfn -= (4<<3);
+ index = 22;
+ i = (dev->path.u.pci.devfn) & 7;
+ if(i>0) {
+ index -= (i+3);
+ }
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_PCI:
+ devfn -= (5<<3);
+ index = 15;
+ break;
+// case PCI_DEVICE_ID_SIS_SIS966_PCIE_A:
+// devfn -= (0x9<<3); // to LPC
+// index2 = 9;
+// break;
+ case PCI_DEVICE_ID_SIS_SIS966_PCIE_B_C: //two
+ devfn -= (0xa<<3); // to LPC
+ index2 = 8;
+ for(i=0;i<2;i++) {
+ lpc_dev = find_lpc_dev(dev, devfn - (i<<3));
+ if(!lpc_dev) continue;
+ index2 -= i;
+ devfn -= (i<<3);
+ break;
+ }
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_PCIE_D:
+ devfn -= (0xc<<3); // to LPC
+ index2 = 6;
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_PCIE_E:
+ devfn -= (0xd<<3); // to LPC
+ index2 = 5;
+ break;
+ case PCI_DEVICE_ID_SIS_SIS966_PCIE_F:
+ devfn -= (0xe<<3); // to LPC
+ index2 = 4;
+ break;
+ default:
+ index = 0;
+ }
+
+ if(!lpc_dev)
+ lpc_dev = find_lpc_dev(dev, devfn);
+
+ if ( !lpc_dev ) return;
+
+ if(index2!=0) {
+ sm_dev = dev_find_slot(dev->bus->secondary, devfn + 1);
+ if(!sm_dev) return;
+
+ if ( sm_dev ) {
+ reg_old = reg = pci_read_config32(sm_dev, 0xe4);
+
+ if (!dev->enabled) { //disable it
+ reg |= (1<<index2);
+ }
+
+ if (reg != reg_old) {
+ pci_write_config32(sm_dev, 0xe4, reg);
+ }
+ }
+
+ index2 = 0;
+ return;
+ }
+
+
+ if ( index == 0) { // for LPC
+
+ // expose ioapic base
+ byte = pci_read_config8(lpc_dev, 0x74);
+ byte |= ((1<<1)); // expose the BAR
+ pci_write_config8(dev, 0x74, byte);
+
+ // expose trap base
+ byte = pci_read_config8(lpc_dev, 0xdd);
+ byte |= ((1<<0)|(1<<3)); // expose the BAR and enable write
+ pci_write_config8(dev, 0xdd, byte);
+
+ return;
+
+ }
+
+ if( index == 16) {
+ sm_dev = dev_find_slot(dev->bus->secondary, devfn + 1);
+ if(!sm_dev) return;
+
+ final_reg = pci_read_config32(sm_dev, 0xe8);
+ final_reg &= ~((1<<16)|(1<<8)|(1<<20)|(1<<14)|(1<<22)|(1<<18)|(1<<17)|(1<<15)|(1<<11)|(1<<10)|(1<<9));
+ pci_write_config32(sm_dev, 0xe8, final_reg); //enable all at first
+#if 0
+ reg_old = reg = pci_read_config32(sm_dev, 0xe4);
+// reg |= (1<<0);
+ reg &= ~(0x3f<<4);
+ if (reg != reg_old) {
+ printk_debug("sis966.c pcie enabled\n");
+ pci_write_config32(sm_dev, 0xe4, reg);
+ }
+#endif
+ }
+
+ if (!dev->enabled) {
+ final_reg |= (1 << index);// disable it
+ //The reason for using final_reg, if diable func 1, the func 2 will be func 1 so We need disable them one time.
+ }
+
+ if(index == 9 ) { //NIC1 is the final, We need update final reg to 0xe8
+ sm_dev = dev_find_slot(dev->bus->secondary, devfn + 1);
+ if(!sm_dev) return;
+ reg_old = pci_read_config32(sm_dev, 0xe8);
+ if (final_reg != reg_old) {
+ pci_write_config32(sm_dev, 0xe8, final_reg);
+ }
+
+ }
+
+
+}
+
+struct chip_operations southbridge_sis_sis966_ops = {
+ CHIP_NAME("SiS SiS966 Southbridge")
+ .enable_dev = sis966_enable,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 11:03:23 +0000