Author: uwe Date: 2007-11-13 11:47:11 +0100 (Tue, 13 Nov 2007) New Revision: 2958
Added: trunk/LinuxBIOSv2/src/southbridge/via/k8t890/k8t890_error.c Modified: trunk/LinuxBIOSv2/src/southbridge/via/k8t890/Config.lb trunk/LinuxBIOSv2/src/southbridge/via/k8t890/k8t890_ctrl.c Log: Fine-tune the V-link bus between K8T890 and VT8237R and set it to 8X transfer rate (up to 1066 MB/s) similar code placed here would be needed for VT8237A/S etc. Using VIA recommended values despite they are for K8T890CF, this is K8T890CE (still dont know what is exactly different).
This patch enables the parity error reporting on V-Link, so it enables NMI generation for the SERR# errors. The NMI may not be generated, maybe port 61h needs some tuning too.
Signed-off-by: Rudolf Marek r.marek@assembler.cz Acked-by: Uwe Hermann uwe@hermann-uwe.de
Modified: trunk/LinuxBIOSv2/src/southbridge/via/k8t890/Config.lb =================================================================== --- trunk/LinuxBIOSv2/src/southbridge/via/k8t890/Config.lb 2007-11-13 09:09:33 UTC (rev 2957) +++ trunk/LinuxBIOSv2/src/southbridge/via/k8t890/Config.lb 2007-11-13 10:47:11 UTC (rev 2958) @@ -23,3 +23,4 @@ driver k8t890_host_ctrl.o driver k8t890_pcie.o driver k8t890_traf_ctrl.o +driver k8t890_error.o
Modified: trunk/LinuxBIOSv2/src/southbridge/via/k8t890/k8t890_ctrl.c =================================================================== --- trunk/LinuxBIOSv2/src/southbridge/via/k8t890/k8t890_ctrl.c 2007-11-13 09:09:33 UTC (rev 2957) +++ trunk/LinuxBIOSv2/src/southbridge/via/k8t890/k8t890_ctrl.c 2007-11-13 10:47:11 UTC (rev 2958) @@ -23,6 +23,56 @@ #include <device/pci_ids.h> #include <console/console.h>
+/** + * Setup the V-Link for VT8237R, 8X mode. + * + * For K8T890CF VIA recommends what is in VIA column, AW is award 8X: + * + * REG DEF AW VIA-8X VIA-4X + * ----------------------------- + * NB V-Link Manual Driving Control strobe 0xb5 0x46 0x46 0x88 0x88 + * NB V-Link Manual Driving Control - Data 0xb6 0x46 0x46 0x88 0x88 + * NB V-Link Receiving Strobe Delay 0xb7 0x02 0x02 0x61 0x01 + * NB V-Link Compensation Control bit4,0 (b5,b6) 0xb4 0x10 0x10 0x11 0x11 + * SB V-Link Strobe Drive Control 0xb9 0x00 0xa5 0x98 0x98 + * SB V-Link Data drive Control???? 0xba 0x00 0xbb 0x77 0x77 + * SB V-Link Receive Strobe Delay???? 0xbb 0x04 0x11 0x11 0x11 + * SB V-Link Compensation Control bit0 (use b9) 0xb8 0x00 0x01 0x01 0x01 + * V-Link CKG Control 0xb0 0x05 0x05 0x06 0x03 + * V-Link CKG Control 0xb1 0x05 0x05 0x01 0x03 + */ +static void ctrl_init(struct device *dev) +{ + u8 reg; + device_t devsb = dev_find_device(PCI_VENDOR_ID_VIA, + PCI_DEVICE_ID_VIA_VT8237R_LPC, 0); + + if (!devsb) + return; + + pci_write_config8(dev, 0xb5, 0x88); + pci_write_config8(dev, 0xb6, 0x88); + pci_write_config8(dev, 0xb7, 0x61); + + reg = pci_read_config8(dev, 0xb4); + reg |= 0x11; + pci_write_config8(dev, 0xb4, reg); + + pci_write_config8(dev, 0xb9, 0x98); + pci_write_config8(dev, 0xba, 0x77); + pci_write_config8(dev, 0xbb, 0x11); + + reg = pci_read_config8(dev, 0xb8); + reg |= 0x1; + pci_write_config8(dev, 0xb8, reg); + + pci_write_config8(dev, 0xb0, 0x06); + pci_write_config8(dev, 0xb1, 0x01); + + /* Program V-link 8X 16bit full duplex, parity enabled. */ + pci_write_config8(dev, 0x48, 0xa3); +} + static void ctrl_enable(struct device *dev) { u8 regm, regm2, regm3; @@ -36,11 +86,6 @@ /* PCI CFG Address bits[27:24] are used as extended register address bit[11:8] */ pci_write_config8(dev, 0x47, 0x30); - - /* FIXME: Program V-link 8X 16bit full duplex, this needs to be fixed - for other than VT8237R SB */ - pci_write_config8(dev, 0x48, 0x23); - /* Magic init. This is not well documented :/ */ pci_write_config8(dev, 0x70, 0xc2);
@@ -92,6 +137,7 @@ .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .enable = ctrl_enable, + .init = ctrl_init, .ops_pci = 0, };
Added: trunk/LinuxBIOSv2/src/southbridge/via/k8t890/k8t890_error.c =================================================================== --- trunk/LinuxBIOSv2/src/southbridge/via/k8t890/k8t890_error.c (rev 0) +++ trunk/LinuxBIOSv2/src/southbridge/via/k8t890/k8t890_error.c 2007-11-13 10:47:11 UTC (rev 2958) @@ -0,0 +1,47 @@ +/* + * This file is part of the LinuxBIOS project. + * + * Copyright (C) 2007 Rudolf Marek r.marek@assembler.cz + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License v2 as published by + * the Free Software Foundation. + * + * 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 <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <console/console.h> + +static void error_enable(struct device *dev) +{ + /* + * bit0 - Enable V-link parity error reporting in 0x50 bit0 (RWC) + * bit6 - Parity Error/SERR# Report Through V-Link to SB + * bit7 - Parity Error/SERR# Report Through NMI + */ + pci_write_config8(dev, 0x58, 0x81); +} + +static const struct device_operations error_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .enable = error_enable, + .ops_pci = 0, +}; + +static const struct pci_driver northbridge_driver __pci_driver = { + .ops = &error_ops, + .vendor = PCI_VENDOR_ID_VIA, + .device = PCI_DEVICE_ID_VIA_K8T890CE_1, +};