first round name simplification. drop the <component>_ prefix.

the prefix was introduced in the early v2 tree many years ago
because our old build system "newconfig" could not handle two files with
the same name in different paths like /path/to/usb.c and
/another/path/to/usb.c correctly. Only one of the files would end up
being compiled into the final image.

Since Kconfig (actually since shortly before we switched to Kconfig) we
don't suffer from that problem anymore. So we could drop the sb700_
prefix from all those filenames (or, the <componentname>_ prefix in general)

- makes it easier to fork off a new chipset
- makes it easier to diff against other chipsets
- storing redundant information in filenames seems wrong

Signed-off-by: <stepan@coresystems.de>

Acked-by: Patrick Georgi <patrick@georgi-clan.de>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6149 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 289 insertions, 0 deletions

diff --git a/src/southbridge/via/vt8237r/ctrl.c b/src/southbridge/via/vt8237r/ctrl.c
new file mode 100644
index 0000000000..f3cc30ed88
--- /dev/null
+++ b/src/southbridge/via/vt8237r/ctrl.c
@@ -0,0 +1,289 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 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 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.
+ *
+ * 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_ops.h>
+#include <device/pci_ids.h>
+#include <console/console.h>
+#include "vt8237r.h"
+
+/* We support here K8M890/K8T890 and VT8237/S/A PCI1/Vlink */
+
+static void vt8237_cfg(struct device *dev)
+{
+	u8 regm, regm3;
+	device_t devfun3;
+
+	devfun3 = dev_find_device(PCI_VENDOR_ID_VIA,
+				  PCI_DEVICE_ID_VIA_K8T890CE_3, 0);
+	if (!devfun3)
+		devfun3 = dev_find_device(PCI_VENDOR_ID_VIA,
+					  PCI_DEVICE_ID_VIA_K8M890CE_3, 0);
+	if (!devfun3)
+		devfun3 = dev_find_device(PCI_VENDOR_ID_VIA,
+					  PCI_DEVICE_ID_VIA_K8T890CF_3, 0);
+	if (!devfun3)
+		die("Unknown NB");
+
+	/* CPU to PCI Flow Control 1 & 2, just fill in recommended. */
+	pci_write_config8(dev, 0x70, 0xc2);
+	pci_write_config8(dev, 0x71, 0xc8);
+
+	/* PCI Control */
+	pci_write_config8(dev, 0x72, 0xee);
+	pci_write_config8(dev, 0x73, 0x01);
+	pci_write_config8(dev, 0x74, 0x3c);
+	pci_write_config8(dev, 0x75, 0x0f);
+	pci_write_config8(dev, 0x76, 0x50);
+	pci_write_config8(dev, 0x77, 0x48);
+	pci_write_config8(dev, 0x78, 0x01);
+	/* APIC on HT */
+	/* Maybe Enable LDT APIC Mode bit3 set to 1 */
+	pci_write_config8(dev, 0x7c, 0x77);
+
+	/* WARNING: Need to copy some registers from NB (D0F3) to SB (D11F7). */
+
+	regm = pci_read_config8(devfun3, 0x88);	/* Shadow mem CTRL */
+	pci_write_config8(dev, 0x57, regm);
+
+	regm = pci_read_config8(devfun3, 0x80);	/* Shadow page C */
+	pci_write_config8(dev, 0x61, regm);
+
+	regm = pci_read_config8(devfun3, 0x81);	/* Shadow page D */
+	pci_write_config8(dev, 0x62, regm);
+
+	/* Shadow page F + memhole copy */
+	regm = pci_read_config8(devfun3, 0x83);
+	pci_write_config8(dev, 0x63, regm);
+
+	// FIXME is this really supposed to be regm3?
+	regm3 = pci_read_config8(devfun3, 0x82);/* Shadow page E */
+	pci_write_config8(dev, 0x64, regm);
+
+	regm = pci_read_config8(devfun3, 0x86);	/* SMM and APIC decoding */
+	pci_write_config8(dev, 0xe6, regm);
+}
+
+/**
+ * Example of setup: 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
+ */
+
+/* we setup 533MB/s mode full duplex */
+
+static void vt8237s_vlink_init(struct device *dev)
+{
+	u8 reg;
+	device_t devfun7;
+
+	devfun7 = dev_find_device(PCI_VENDOR_ID_VIA,
+				  PCI_DEVICE_ID_VIA_K8T890CE_7, 0);
+	if (!devfun7)
+		devfun7 = dev_find_device(PCI_VENDOR_ID_VIA,
+					  PCI_DEVICE_ID_VIA_K8M890CE_7, 0);
+	if (!devfun7)
+		devfun7 = dev_find_device(PCI_VENDOR_ID_VIA,
+					  PCI_DEVICE_ID_VIA_K8T890CF_7, 0);
+	/* No pairing NB was found. */
+	if (!devfun7)
+		return;
+
+	/*
+	 * This init code is valid only for the VT8237S! For different
+	 * sounthbridges (e.g. VT8237A, VT8237S, VT8237R (without plus R)
+	 * and VT8251) a different init code is required.
+	 */
+
+	/* disable auto disconnect */
+	reg = pci_read_config8(devfun7, 0x42);
+	reg &= ~0x4;
+	pci_write_config8(devfun7, 0x42, reg);
+
+	/* NB part setup */
+	pci_write_config8(devfun7, 0xb5, 0x66);
+	pci_write_config8(devfun7, 0xb6, 0x66);
+	pci_write_config8(devfun7, 0xb7, 0x64);
+
+	reg = pci_read_config8(devfun7, 0xb4);
+	reg |= 0x1;
+	reg &= ~0x10;
+	pci_write_config8(devfun7, 0xb4, reg);
+
+	pci_write_config8(devfun7, 0xb0, 0x6);
+	pci_write_config8(devfun7, 0xb1, 0x1);
+
+	/* SB part setup */
+	pci_write_config8(dev, 0xb7, 0x60);
+	pci_write_config8(dev, 0xb9, 0x88);
+	pci_write_config8(dev, 0xba, 0x88);
+	pci_write_config8(dev, 0xbb, 0x89);
+
+	reg = pci_read_config8(dev, 0xbd);
+	reg |= 0x3;
+	reg &= ~0x4;
+	pci_write_config8(dev, 0xbd, reg);
+
+	reg = pci_read_config8(dev, 0xbc);
+	reg &= ~0x7;
+	pci_write_config8(dev, 0xbc, reg);
+
+	/* Program V-link 8X 8bit full duplex, parity enabled.  */
+	pci_write_config8(dev, 0x48, 0x23 | 0x80);
+
+	/* enable auto disconnect, for STPGNT and HALT */
+	reg = pci_read_config8(devfun7, 0x42);
+	reg |= 0x7;
+	pci_write_config8(devfun7, 0x42, reg);
+
+}
+
+static void vt8237a_vlink_init(struct device *dev)
+{
+	u8 reg;
+	device_t devfun7;
+
+	devfun7 = dev_find_device(PCI_VENDOR_ID_VIA,
+				  PCI_DEVICE_ID_VIA_K8T890CE_7, 0);
+	if (!devfun7)
+		devfun7 = dev_find_device(PCI_VENDOR_ID_VIA,
+					  PCI_DEVICE_ID_VIA_K8M890CE_7, 0);
+	if (!devfun7)
+		devfun7 = dev_find_device(PCI_VENDOR_ID_VIA,
+					  PCI_DEVICE_ID_VIA_K8T890CF_7, 0);
+	/* No pairing NB was found. */
+	if (!devfun7)
+		return;
+
+	/*
+	 * This init code is valid only for the VT8237A! For different
+	 * sounthbridges (e.g. VT8237S, VT8237R and VT8251) a different
+	 * init code is required.
+	 *
+	 * FIXME: This is based on vt8237r_vlink_init() in
+	 *        k8t890/k8t890_ctrl.c and modified to fit what the AMI
+	 *        BIOS on my M2V wrote to these registers (by looking
+	 *        at lspci -nxxx output).
+	 *        Works for me.
+	 */
+
+	/* disable auto disconnect */
+	reg = pci_read_config8(devfun7, 0x42);
+	reg &= ~0x4;
+	pci_write_config8(devfun7, 0x42, reg);
+
+	/* NB part setup */
+	pci_write_config8(devfun7, 0xb5, 0x88);
+	pci_write_config8(devfun7, 0xb6, 0x88);
+	pci_write_config8(devfun7, 0xb7, 0x61);
+
+	reg = pci_read_config8(devfun7, 0xb4);
+	reg |= 0x11;
+	pci_write_config8(devfun7, 0xb4, reg);
+
+	pci_write_config8(devfun7, 0xb0, 0x6);
+	pci_write_config8(devfun7, 0xb1, 0x1);
+
+	/* SB part setup */
+	pci_write_config8(dev, 0xb7, 0x50);
+	pci_write_config8(dev, 0xb9, 0x88);
+	pci_write_config8(dev, 0xba, 0x8a);
+	pci_write_config8(dev, 0xbb, 0x88);
+
+	reg = pci_read_config8(dev, 0xbd);
+	reg |= 0x3;
+	reg &= ~0x4;
+	pci_write_config8(dev, 0xbd, reg);
+
+	reg = pci_read_config8(dev, 0xbc);
+	reg &= ~0x7;
+	pci_write_config8(dev, 0xbc, reg);
+
+	pci_write_config8(dev, 0x48, 0x23);
+
+	/* enable auto disconnect, for STPGNT and HALT */
+	reg = pci_read_config8(devfun7, 0x42);
+	reg |= 0x7;
+	pci_write_config8(devfun7, 0x42, reg);
+}
+
+static void ctrl_enable(struct device *dev)
+{
+	/* Enable the 0:13 and 0:13.1. */
+	/* FIXME */
+	pci_write_config8(dev, 0x4f, 0x43);
+}
+
+static void ctrl_init(struct device *dev)
+{
+	/*
+	 * TODO: Fix some ordering issue for V-link set Rx77[6] and
+	 * PCI1_Rx4F[0] should to 1.
+	 * FIXME DO you need?
+	 */
+
+	/*
+	 * VT8237R specific configuration. Other SB are done in their own
+	 * directories. TODO: Add A version.
+	 */
+	device_t devsb = dev_find_device(PCI_VENDOR_ID_VIA,
+					 PCI_DEVICE_ID_VIA_VT8237S_LPC, 0);
+	if (devsb) {
+		vt8237s_vlink_init(dev);
+	}
+
+	devsb = dev_find_device(PCI_VENDOR_ID_VIA,
+				PCI_DEVICE_ID_VIA_VT8237A_LPC, 0);
+	if (devsb) {
+		vt8237a_vlink_init(dev);
+	}
+
+	/* Configure PCI1 and copy mirror registers from D0F3. */
+	vt8237_cfg(dev);
+	dump_south(dev);
+}
+
+static const struct device_operations ctrl_ops = {
+	.read_resources		= pci_dev_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_dev_enable_resources,
+	.init			= ctrl_init,
+	.enable			= ctrl_enable,
+	.ops_pci		= 0,
+};
+
+static const struct pci_driver northbridge_driver_t __pci_driver = {
+	.ops	= &ctrl_ops,
+	.vendor	= PCI_VENDOR_ID_VIA,
+	.device	= PCI_DEVICE_ID_VIA_VT8237_VLINK,
+};