intel/i82801ix: new southbridge, ICH9

Add support for ICH9 southbridge

Change-Id: I70612431101bf48d9dcc96ee1b37d257c9ad2ee2
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1690
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

1 files changed, 285 insertions, 0 deletions

diff --git a/src/southbridge/intel/i82801ix/sata.c b/src/southbridge/intel/i82801ix/sata.c
new file mode 100644
index 0000000000..595b80cb53
--- /dev/null
+++ b/src/southbridge/intel/i82801ix/sata.c
@@ -0,0 +1,285 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 coresystems GmbH
+ *               2012 secunet Security Networks AG
+ *
+ * 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 <arch/io.h>
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include "i82801ix.h"
+
+typedef struct southbridge_intel_i82801ix_config config_t;
+
+static void sata_enable_ahci_mmap(struct device *const dev, const u8 port_map,
+				  const int is_mobile)
+{
+	int i;
+	u32 reg32;
+
+	/* Initialize AHCI memory-mapped space */
+	const u32 abar = pci_read_config32(dev, PCI_BASE_ADDRESS_5);
+	printk(BIOS_DEBUG, "ABAR: %08X\n", abar);
+
+	/* Set AHCI access mode.
+	   No other ABAR registers should be accessed before this. */
+	reg32 = read32(abar + 0x04);
+	reg32 |= 1 << 31;
+	write32(abar + 0x04, reg32);
+
+	/* CAP (HBA Capabilities) : enable power management */
+	reg32 = read32(abar + 0x00);
+	/* CCCS must be set. */
+	reg32 |= 0x0c006080;  /* set CCCS+PSC+SSC+SALP+SSS */
+	reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */
+	write32(abar + 0x00, reg32);
+
+	/* PI (Ports implemented) */
+	write32(abar + 0x0c, port_map);
+	/* PCH code reads back twice, do we need it, too? */
+	(void) read32(abar + 0x0c); /* Read back 1 */
+	(void) read32(abar + 0x0c); /* Read back 2 */
+
+	/* VSP (Vendor Specific Register) */
+	reg32 = read32(abar + 0xa0);
+	reg32 &= ~0x00000001; /* clear SLPD */
+	write32(abar + 0xa0, reg32);
+
+	/* Lock R/WO bits in Port command registers. */
+	for (i = 0; i < 6; ++i) {
+		if (((i == 2) || (i == 3)) && is_mobile)
+			continue;
+		const u32 addr = abar + 0x118 + (i * 0x80);
+		write32(addr, read32(addr));
+	}
+}
+
+static void sata_program_indexed(struct device *const dev, const int is_mobile)
+{
+	u32 reg32;
+
+	pci_write_config8(dev, D31F2_SIDX, 0x18);
+	reg32 = pci_read_config32(dev, D31F2_SDAT);
+	reg32 &= ~((7 << 6) | (7 << 3) | (7 << 0));
+	reg32 |= (3 << 3) | (3 << 0);
+	pci_write_config32(dev, D31F2_SDAT, reg32);
+
+	pci_write_config8(dev, D31F2_SIDX, 0x28);
+	pci_write_config32(dev, D31F2_SDAT, 0x00cc2080);
+
+	pci_write_config8(dev, D31F2_SIDX, 0x40);
+	pci_write_config8(dev, D31F2_SDAT + 2, 0x22);
+
+	pci_write_config8(dev, D31F2_SIDX, 0x78);
+	pci_write_config8(dev, D31F2_SDAT + 2, 0x22);
+
+	if (!is_mobile) {
+		pci_write_config8(dev, D31F2_SIDX, 0x84);
+		reg32 = pci_read_config32(dev, D31F2_SDAT);
+		reg32 &= ~((7 << 3) | (7 << 0));
+		reg32 |= (3 << 3) | (3 << 0);
+		pci_write_config32(dev, D31F2_SDAT, reg32);
+	}
+
+	pci_write_config8(dev, D31F2_SIDX, 0x88);
+	reg32 = pci_read_config32(dev, D31F2_SDAT);
+	if (!is_mobile)
+		reg32 &= ~((7 << 27) | (7 << 24) | (7 << 11) | (7 << 8));
+	reg32 &= ~((7 << 19) | (7 << 16) | (7 << 3) | (7 << 0));
+	if (!is_mobile)
+		reg32 |= (4 << 27) | (4 << 24) | (2 << 11) | (2 << 8);
+	reg32 |= (4 << 19) | (4 << 16) | (2 << 3) | (2 << 0);
+	pci_write_config32(dev, D31F2_SDAT, reg32);
+
+	pci_write_config8(dev, D31F2_SIDX, 0x8c);
+	reg32 = pci_read_config32(dev, D31F2_SDAT);
+	if (!is_mobile)
+		reg32 &= ~((7 << 27) | (7 << 24));
+	reg32 &= ~((7 << 19) | (7 << 16) | 0xffff);
+	if (!is_mobile)
+		reg32 |= (2 << 27) | (2 << 24);
+	reg32 |= (2 << 19) | (2 << 16) | 0x00aa;
+	pci_write_config32(dev, D31F2_SDAT, reg32);
+
+	pci_write_config8(dev, D31F2_SIDX, 0x94);
+	pci_write_config32(dev, D31F2_SDAT, 0x00000022);
+
+	pci_write_config8(dev, D31F2_SIDX, 0xa0);
+	reg32 = pci_read_config32(dev, D31F2_SDAT);
+	reg32 &= ~((7 << 3) | (7 << 0));
+	reg32 |= (3 << 3) | (3 << 0);
+	pci_write_config32(dev, D31F2_SDAT, reg32);
+
+	pci_write_config8(dev, D31F2_SIDX, 0xa8);
+	reg32 = pci_read_config32(dev, D31F2_SDAT);
+	reg32 &= ~((7 << 19) | (7 << 16) | (7 << 3) | (7 << 0));
+	reg32 |= (4 << 19) | (4 << 16) | (2 << 3) | (2 << 0);
+	pci_write_config32(dev, D31F2_SDAT, reg32);
+
+	pci_write_config8(dev, D31F2_SIDX, 0xac);
+	reg32 = pci_read_config32(dev, D31F2_SDAT);
+	reg32 &= ~((7 << 19) | (7 << 16) | 0xffff);
+	reg32 |= (2 << 19) | (2 << 16) | 0x000a;
+	pci_write_config32(dev, D31F2_SDAT, reg32);
+}
+
+static void sata_init(struct device *const dev)
+{
+	u16 reg16;
+
+	/* Get the chip configuration */
+	const config_t *const config = dev->chip_info;
+
+	const u16 devid = pci_read_config16(dev, PCI_DEVICE_ID);
+	const int is_mobile = (devid == 0x2928) || (devid == 0x2929);
+
+	printk(BIOS_DEBUG, "i82801ix_sata: initializing...\n");
+
+	if (config == NULL) {
+		printk(BIOS_ERR, "i82801ix_sata: error: "
+				 "device not in devicetree.cb!\n");
+		return;
+	}
+
+	/*
+	 * TODO: In contrast to ICH7 and PCH code we don't set
+	 * timings, dma and IDE-I/O settings here. Looks like they
+	 * became obsolete with the fading of real IDE ports.
+	 * Maybe we can safely remove those settings from PCH code and
+	 * even ICH7 code if it doesn't use the feature to combine the
+	 * IDE and SATA controllers.
+	 */
+
+	pci_write_config16(dev, PCI_COMMAND,
+			PCI_COMMAND_MASTER |
+			PCI_COMMAND_MEMORY | /* read-only in IDE modes */
+			PCI_COMMAND_IO);
+	if (!config->sata_ahci)
+		/* No AHCI: clear AHCI base */
+		pci_write_config32(dev, PCI_BASE_ADDRESS_5, 0x00000000);
+
+	if (config->ide_legacy_combined) {
+		printk(BIOS_DEBUG, "SATA controller in combined mode.\n");
+	} else if (config->sata_ahci) {
+		printk(BIOS_DEBUG, "SATA controller in AHCI mode.\n");
+	} else {
+		printk(BIOS_DEBUG, "SATA controller in native mode.\n");
+
+		/* Enable native mode on both primary and secondary. */
+		pci_write_config8(dev, PCI_CLASS_PROG, 0x8f);
+	}
+
+	/* Looks like we should only enable decoding here. */
+	pci_write_config16(dev, D31F2_IDE_TIM_PRI, (1 << 15));
+	pci_write_config16(dev, D31F2_IDE_TIM_SEC, (1 << 15));
+
+	/* Port enable. For AHCI, it's managed in memory mapped space. */
+	reg16 = pci_read_config16(dev, 0x92);
+	reg16 &= ~0x3f;
+	reg16 |= (1 << 15) | (config->sata_ahci ? 0x3f : config->sata_port_map);
+	pci_write_config16(dev, 0x92, reg16);
+
+	/* SATA clock settings */
+	u32 sclkcg = 0;
+	if (config->sata_clock_request &&
+			!(inb(DEFAULT_GPIOBASE + 0x30) & (1 << (35 - 32))))
+		sclkcg |= 1 << 30; /* Enable SATA clock request. */
+	/* Disable unused ports. */
+	sclkcg |= ((~config->sata_port_map) & 0x3f) << 24;
+	/* Must be programmed. */
+	sclkcg |= 0x193;
+	pci_write_config32(dev, 0x94, sclkcg);
+
+	if (is_mobile && config->sata_traffic_monitor) {
+		const device_t lpc_dev = dev_find_slot(0, PCI_DEVFN(0x1f, 0));
+		if (((pci_read_config8(lpc_dev, D31F0_CxSTATE_CNF)
+							>> 3) & 3) == 3) {
+			u8 reg8 = pci_read_config8(dev, 0x9c);
+			reg8 &= ~(0x1f << 2);
+			reg8 |= 3 << 2;
+			pci_write_config8(dev, 0x9c, reg8);
+		}
+	}
+
+	if (config->sata_ahci)
+		sata_enable_ahci_mmap(dev, config->sata_port_map, is_mobile);
+
+	sata_program_indexed(dev, is_mobile);
+}
+
+static void sata_enable(device_t dev)
+{
+	/* Get the chip configuration */
+	const config_t *const config = dev->chip_info;
+
+	u16 map = 0;
+
+	if (!config)
+		return;
+
+	/*
+	 * Set SATA controller mode early so the resource allocator can
+	 * properly assign IO/Memory resources for the controller.
+	 */
+	if (config->sata_ahci)
+		map = 0x0040 | 0x0020; /* SATA mode + all ports on D31:F2 */
+
+	map |= (config->sata_port_map ^ 0x3f) << 8;
+
+	pci_write_config16(dev, 0x90, map);
+}
+
+static void sata_set_subsystem(device_t dev, unsigned vendor, unsigned device)
+{
+	if (!vendor || !device) {
+		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+				pci_read_config32(dev, PCI_VENDOR_ID));
+	} else {
+		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+				((device & 0xffff) << 16) | (vendor & 0xffff));
+	}
+}
+
+static struct pci_operations sata_pci_ops = {
+	.set_subsystem    = sata_set_subsystem,
+};
+
+static struct device_operations sata_ops = {
+	.read_resources		= pci_dev_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_dev_enable_resources,
+	.init			= sata_init,
+	.enable			= sata_enable,
+	.scan_bus		= 0,
+	.ops_pci		= &sata_pci_ops,
+};
+
+static const unsigned short pci_device_ids[] = {
+	0x2920, 0x2921, 0x2922, 0x2923,
+	0x2928, 0x2929,
+	0,
+};
+
+static const struct pci_driver pch_sata __pci_driver = {
+	.ops	 = &sata_ops,
+	.vendor	 = PCI_VENDOR_ID_INTEL,
+	.devices = pci_device_ids,
+};
+