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Diffstat (limited to 'src/southbridge/intel/ibexpeak/pcie.c')
-rw-r--r--src/southbridge/intel/ibexpeak/pcie.c315
1 files changed, 0 insertions, 315 deletions
diff --git a/src/southbridge/intel/ibexpeak/pcie.c b/src/southbridge/intel/ibexpeak/pcie.c
deleted file mode 100644
index 9dc98013b7..0000000000
--- a/src/southbridge/intel/ibexpeak/pcie.c
+++ /dev/null
@@ -1,315 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2008-2009 coresystems GmbH
- *
- * 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 <console/console.h>
-#include <device/device.h>
-#include <device/pci.h>
-#include <device/pciexp.h>
-#include <device/pci_ids.h>
-#include "pch.h"
-
-static void pch_pcie_pm_early(struct device *dev)
-{
- u16 link_width_p0, link_width_p4;
- u8 slot_power_limit = 10; /* 10W for x1 */
- u32 reg32;
- u8 reg8;
-
- reg32 = RCBA32(RPC);
-
- /* Port 0-3 link aggregation from PCIEPCS1[1:0] soft strap */
- switch (reg32 & 3) {
- case 3:
- link_width_p0 = 4;
- break;
- case 1:
- case 2:
- link_width_p0 = 2;
- break;
- case 0:
- default:
- link_width_p0 = 1;
- }
-
- /* Port 4-7 link aggregation from PCIEPCS2[1:0] soft strap */
- switch ((reg32 >> 2) & 3) {
- case 3:
- link_width_p4 = 4;
- break;
- case 1:
- case 2:
- link_width_p4 = 2;
- break;
- case 0:
- default:
- link_width_p4 = 1;
- }
-
- /* Enable dynamic clock gating where needed */
- reg8 = pci_read_config8(dev, 0xe1);
- switch (PCI_FUNC(dev->path.pci.devfn)) {
- case 0: /* Port 0 */
- if (link_width_p0 == 4)
- slot_power_limit = 40; /* 40W for x4 */
- else if (link_width_p0 == 2)
- slot_power_limit = 20; /* 20W for x2 */
- reg8 |= 0x3f;
- break;
- case 4: /* Port 4 */
- if (link_width_p4 == 4)
- slot_power_limit = 40; /* 40W for x4 */
- else if (link_width_p4 == 2)
- slot_power_limit = 20; /* 20W for x2 */
- reg8 |= 0x3f;
- break;
- case 1: /* Port 1 only if Port 0 is x1 */
- if (link_width_p0 == 1)
- reg8 |= 0x3;
- break;
- case 2: /* Port 2 only if Port 0 is x1 or x2 */
- case 3: /* Port 3 only if Port 0 is x1 or x2 */
- if (link_width_p0 <= 2)
- reg8 |= 0x3;
- break;
- case 5: /* Port 5 only if Port 4 is x1 */
- if (link_width_p4 == 1)
- reg8 |= 0x3;
- break;
- case 6: /* Port 7 only if Port 4 is x1 or x2 */
- case 7: /* Port 7 only if Port 4 is x1 or x2 */
- if (link_width_p4 <= 2)
- reg8 |= 0x3;
- break;
- }
- pci_write_config8(dev, 0xe1, reg8);
-
- /* Set 0xE8[0] = 1 */
- reg32 = pci_read_config32(dev, 0xe8);
- reg32 |= 1;
- pci_write_config32(dev, 0xe8, reg32);
-
- /* Adjust Common Clock exit latency */
- reg32 = pci_read_config32(dev, 0xd8);
- reg32 &= ~(1 << 17);
- reg32 |= (1 << 16) | (1 << 15);
- reg32 &= ~(1 << 31); /* Disable PME# SCI for native PME handling */
- pci_write_config32(dev, 0xd8, reg32);
-
- /* Adjust ASPM L1 exit latency */
- reg32 = pci_read_config32(dev, 0x4c);
- reg32 &= ~((1 << 17) | (1 << 16) | (1 << 15));
- if (RCBA32(0x2320) & (1 << 16)) {
- /* If RCBA+2320[15]=1 set ASPM L1 to 8-16us */
- reg32 |= (1 << 17);
- } else {
- /* Else set ASPM L1 to 2-4us */
- reg32 |= (1 << 16);
- }
- pci_write_config32(dev, 0x4c, reg32);
-
- /* Set slot power limit as configured above */
- reg32 = pci_read_config32(dev, 0x54);
- reg32 &= ~((1 << 15) | (1 << 16)); /* 16:15 = Slot power scale */
- reg32 &= ~(0xff << 7); /* 14:7 = Slot power limit */
- reg32 |= (slot_power_limit << 7);
- pci_write_config32(dev, 0x54, reg32);
-}
-
-static void pch_pcie_pm_late(struct device *dev)
-{
- struct southbridge_intel_ibexpeak_config *config = dev->chip_info;
- enum aspm_type apmc = 0;
- u32 reg32;
-
- /* Set 0x314 = 0x743a361b */
- pci_mmio_write_config32(dev, 0x314, 0x743a361b);
-
- /* Set 0x318[31:16] = 0x1414 */
- reg32 = pci_mmio_read_config32(dev, 0x318);
- reg32 &= 0x0000ffff;
- reg32 |= 0x14140000;
- pci_mmio_write_config32(dev, 0x318, reg32);
-
- /* Set 0x324[5] = 1 */
- reg32 = pci_mmio_read_config32(dev, 0x324);
- reg32 |= (1 << 5);
- pci_mmio_write_config32(dev, 0x324, reg32);
-
- /* Set 0x330[7:0] = 0x40 */
- reg32 = pci_mmio_read_config32(dev, 0x330);
- reg32 &= ~(0xff);
- reg32 |= 0x40;
- pci_mmio_write_config32(dev, 0x330, reg32);
-
- /* Set 0x33C[24:0] = 0x854c74 */
- reg32 = pci_mmio_read_config32(dev, 0x33c);
- reg32 &= 0xff000000;
- reg32 |= 0x00854c74;
- pci_mmio_write_config32(dev, 0x33c, reg32);
-
- /* No IO-APIC, Disable EOI forwarding */
- reg32 = pci_read_config32(dev, 0xd4);
- reg32 |= (1 << 1);
- pci_write_config32(dev, 0xd4, reg32);
-
- /* Check for a rootport ASPM override */
- switch (PCI_FUNC(dev->path.pci.devfn)) {
- case 0:
- apmc = config->pcie_aspm_f0;
- break;
- case 1:
- apmc = config->pcie_aspm_f1;
- break;
- case 2:
- apmc = config->pcie_aspm_f2;
- break;
- case 3:
- apmc = config->pcie_aspm_f3;
- break;
- case 4:
- apmc = config->pcie_aspm_f4;
- break;
- case 5:
- apmc = config->pcie_aspm_f5;
- break;
- case 6:
- apmc = config->pcie_aspm_f6;
- break;
- case 7:
- apmc = config->pcie_aspm_f7;
- break;
- }
-
- /* Setup the override or get the real ASPM setting */
- if (apmc) {
- reg32 = pci_read_config32(dev, 0xd4);
- reg32 |= (apmc << 2) | (1 << 4);
- pci_write_config32(dev, 0xd4, reg32);
- } else {
- apmc = pci_read_config32(dev, 0x50) & 3;
- }
-
- /* If both L0s and L1 enabled then set root port 0xE8[1]=1 */
- if (apmc == PCIE_ASPM_BOTH) {
- reg32 = pci_read_config32(dev, 0xe8);
- reg32 |= (1 << 1);
- pci_write_config32(dev, 0xe8, reg32);
- }
-}
-
-static void pci_init(struct device *dev)
-{
- u16 reg16;
- u32 reg32;
-
- printk(BIOS_DEBUG, "Initializing PCH PCIe bridge.\n");
-
- /* Enable Bus Master */
- reg32 = pci_read_config32(dev, PCI_COMMAND);
- reg32 |= PCI_COMMAND_MASTER;
- pci_write_config32(dev, PCI_COMMAND, reg32);
-
- /* Set Cache Line Size to 0x10 */
- // This has no effect but the OS might expect it
- pci_write_config8(dev, 0x0c, 0x10);
-
- reg16 = pci_read_config16(dev, 0x3e);
- reg16 &= ~(1 << 0); /* disable parity error response */
- // reg16 &= ~(1 << 1); /* disable SERR */
- reg16 |= (1 << 2); /* ISA enable */
- pci_write_config16(dev, 0x3e, reg16);
-
-#ifdef EVEN_MORE_DEBUG
- reg32 = pci_read_config32(dev, 0x20);
- printk(BIOS_SPEW, " MBL = 0x%08x\n", reg32);
- reg32 = pci_read_config32(dev, 0x24);
- printk(BIOS_SPEW, " PMBL = 0x%08x\n", reg32);
- reg32 = pci_read_config32(dev, 0x28);
- printk(BIOS_SPEW, " PMBU32 = 0x%08x\n", reg32);
- reg32 = pci_read_config32(dev, 0x2c);
- printk(BIOS_SPEW, " PMLU32 = 0x%08x\n", reg32);
-#endif
-
- /* Clear errors in status registers */
- reg16 = pci_read_config16(dev, 0x06);
- //reg16 |= 0xf900;
- pci_write_config16(dev, 0x06, reg16);
-
- reg16 = pci_read_config16(dev, 0x1e);
- //reg16 |= 0xf900;
- pci_write_config16(dev, 0x1e, reg16);
-}
-
-static void pch_pcie_enable(device_t dev)
-{
- /* Power Management init before enumeration */
- pch_pcie_pm_early(dev);
-}
-
-static unsigned int pch_pciexp_scan_bridge(device_t dev, unsigned int max)
-{
- unsigned int ret;
-
- /* Normal PCIe Scan */
- ret = pciexp_scan_bridge(dev, max);
-
- /* Late Power Management init after bridge device enumeration */
- pch_pcie_pm_late(dev);
-
- return ret;
-}
-
-static void pcie_set_subsystem(device_t dev, unsigned vendor, unsigned device)
-{
- /* NOTE: This is not the default position! */
- if (!vendor || !device) {
- pci_write_config32(dev, 0x94,
- pci_read_config32(dev, 0));
- } else {
- pci_write_config32(dev, 0x94,
- ((device & 0xffff) << 16) | (vendor & 0xffff));
- }
-}
-
-static struct pci_operations pci_ops = {
- .set_subsystem = pcie_set_subsystem,
-};
-
-static struct device_operations device_ops = {
- .read_resources = pci_bus_read_resources,
- .set_resources = pci_dev_set_resources,
- .enable_resources = pci_bus_enable_resources,
- .init = pci_init,
- .enable = pch_pcie_enable,
- .scan_bus = pch_pciexp_scan_bridge,
- .ops_pci = &pci_ops,
-};
-
-static const unsigned short pci_device_ids[] = { 0x1c10, 0x1c12, 0x1c14, 0x1c16,
- 0x1c18, 0x1c1a, 0x1c1c, 0x1c1e,
- 0x1e10, 0x1e12, 0x1e14, 0x1e16,
- 0x1e18, 0x1e1a, 0x1e1c, 0x1e1e,
- 0 };
-
-static const struct pci_driver pch_pcie __pci_driver = {
- .ops = &device_ops,
- .vendor = PCI_VENDOR_ID_INTEL,
- .devices = pci_device_ids,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-08 03:26:39 +0000