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authorStefan Reinauer <stefan.reinauer@coreboot.org>2013-06-13 00:13:50 +0200
committerStefan Reinauer <stefan.reinauer@coreboot.org>2013-06-13 00:27:07 +0200
commit3a09179f462ad3f6111c7b8ebbad7d78534f9234 (patch)
treeb854e11a926e555a4ade85950846b8cdea0ce56b /src/southbridge/intel/ibexpeak/pch.c
parent0210119b4b95e84f954cfd6dc11aafbc187421af (diff)
downloadcoreboot-3a09179f462ad3f6111c7b8ebbad7d78534f9234.tar.xz
Revert "Add support for Intel Ibex Peak (Mobile 5) southbridge"
This reverts commit 0210119b4b95e84f954cfd6dc11aafbc187421af Change-Id: I5be3f2a54394c592650a0dcd671e4a72ae796cb2 Reviewed-on: http://review.coreboot.org/3443 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/southbridge/intel/ibexpeak/pch.c')
-rw-r--r--src/southbridge/intel/ibexpeak/pch.c429
1 files changed, 0 insertions, 429 deletions
diff --git a/src/southbridge/intel/ibexpeak/pch.c b/src/southbridge/intel/ibexpeak/pch.c
deleted file mode 100644
index 942e2e9281..0000000000
--- a/src/southbridge/intel/ibexpeak/pch.c
+++ /dev/null
@@ -1,429 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2008-2009 coresystems GmbH
- * Copyright (C) 2012 The Chromium OS Authors. All rights reserved.
- *
- * 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 <delay.h>
-#ifdef __SMM__
-#include <arch/io.h>
-#include <device/pci_def.h>
-#else /* !__SMM__ */
-#include <device/device.h>
-#include <device/pci.h>
-#endif
-#include "pch.h"
-
-static int pch_revision_id = -1;
-static int pch_type = -1;
-
-int pch_silicon_revision(void)
-{
- device_t dev;
-
-#ifdef __SMM__
- dev = PCI_DEV(0, 0x1f, 0);
-#else
- dev = dev_find_slot(0, PCI_DEVFN(0x1f, 0));
-#endif
-
- if (pch_revision_id < 0)
- pch_revision_id = pci_read_config8(dev, PCI_REVISION_ID);
- return pch_revision_id;
-}
-
-int pch_silicon_type(void)
-{
- device_t dev;
-
-#ifdef __SMM__
- dev = PCI_DEV(0, 0x1f, 0);
-#else
- dev = dev_find_slot(0, PCI_DEVFN(0x1f, 0));
-#endif
-
- if (pch_type < 0)
- pch_type = pci_read_config8(dev, PCI_DEVICE_ID + 1);
- return pch_type;
-}
-
-int pch_silicon_supported(int type, int rev)
-{
- int cur_type = pch_silicon_type();
- int cur_rev = pch_silicon_revision();
-
- switch (type) {
- case PCH_TYPE_CPT:
- /* CougarPoint minimum revision */
- if (cur_type == PCH_TYPE_CPT && cur_rev >= rev)
- return 1;
- /* PantherPoint any revision */
- if (cur_type == PCH_TYPE_PPT)
- return 1;
- break;
-
- case PCH_TYPE_PPT:
- /* PantherPoint minimum revision */
- if (cur_type == PCH_TYPE_PPT && cur_rev >= rev)
- return 1;
- break;
- }
-
- return 0;
-}
-
-#define IOBP_RETRY 1000
-static inline int iobp_poll(void)
-{
- unsigned try = IOBP_RETRY;
- u32 data;
-
- while (try--) {
- data = RCBA32(IOBPS);
- if ((data & 1) == 0)
- return 1;
- udelay(10);
- }
-
- printk(BIOS_ERR, "IOBP timeout\n");
- return 0;
-}
-
-void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
-{
- u32 data;
-
- /* Set the address */
- RCBA32(IOBPIRI) = address;
-
- /* READ OPCODE */
- if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0))
- RCBA32(IOBPS) = IOBPS_RW_BX;
- else
- RCBA32(IOBPS) = IOBPS_READ_AX;
- if (!iobp_poll())
- return;
-
- /* Read IOBP data */
- data = RCBA32(IOBPD);
- if (!iobp_poll())
- return;
-
- /* Check for successful transaction */
- if ((RCBA32(IOBPS) & 0x6) != 0) {
- printk(BIOS_ERR, "IOBP read 0x%08x failed\n", address);
- return;
- }
-
- /* Update the data */
- data &= andvalue;
- data |= orvalue;
-
- /* WRITE OPCODE */
- if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0))
- RCBA32(IOBPS) = IOBPS_RW_BX;
- else
- RCBA32(IOBPS) = IOBPS_WRITE_AX;
- if (!iobp_poll())
- return;
-
- /* Write IOBP data */
- RCBA32(IOBPD) = data;
- if (!iobp_poll())
- return;
-}
-
-#ifndef __SMM__
-/* Set bit in Function Disble register to hide this device */
-static void pch_hide_devfn(unsigned devfn)
-{
- switch (devfn) {
- case PCI_DEVFN(22, 0): /* MEI #1 */
- RCBA32_OR(FD2, PCH_DISABLE_MEI1);
- break;
- case PCI_DEVFN(22, 1): /* MEI #2 */
- RCBA32_OR(FD2, PCH_DISABLE_MEI2);
- break;
- case PCI_DEVFN(22, 2): /* IDE-R */
- RCBA32_OR(FD2, PCH_DISABLE_IDER);
- break;
- case PCI_DEVFN(22, 3): /* KT */
- RCBA32_OR(FD2, PCH_DISABLE_KT);
- break;
- case PCI_DEVFN(25, 0): /* Gigabit Ethernet */
- RCBA32_OR(BUC, PCH_DISABLE_GBE);
- break;
- case PCI_DEVFN(26, 0): /* EHCI #2 */
- RCBA32_OR(FD, PCH_DISABLE_EHCI2);
- break;
- case PCI_DEVFN(27, 0): /* HD Audio Controller */
- RCBA32_OR(FD, PCH_DISABLE_HD_AUDIO);
- break;
- case PCI_DEVFN(28, 0): /* PCI Express Root Port 1 */
- case PCI_DEVFN(28, 1): /* PCI Express Root Port 2 */
- case PCI_DEVFN(28, 2): /* PCI Express Root Port 3 */
- case PCI_DEVFN(28, 3): /* PCI Express Root Port 4 */
- case PCI_DEVFN(28, 4): /* PCI Express Root Port 5 */
- case PCI_DEVFN(28, 5): /* PCI Express Root Port 6 */
- case PCI_DEVFN(28, 6): /* PCI Express Root Port 7 */
- case PCI_DEVFN(28, 7): /* PCI Express Root Port 8 */
- RCBA32_OR(FD, PCH_DISABLE_PCIE(PCI_FUNC(devfn)));
- break;
- case PCI_DEVFN(29, 0): /* EHCI #1 */
- RCBA32_OR(FD, PCH_DISABLE_EHCI1);
- break;
- case PCI_DEVFN(30, 0): /* PCI-to-PCI Bridge */
- RCBA32_OR(FD, PCH_DISABLE_P2P);
- break;
- case PCI_DEVFN(31, 0): /* LPC */
- RCBA32_OR(FD, PCH_DISABLE_LPC);
- break;
- case PCI_DEVFN(31, 2): /* SATA #1 */
- RCBA32_OR(FD, PCH_DISABLE_SATA1);
- break;
- case PCI_DEVFN(31, 3): /* SMBUS */
- RCBA32_OR(FD, PCH_DISABLE_SMBUS);
- break;
- case PCI_DEVFN(31, 5): /* SATA #22 */
- RCBA32_OR(FD, PCH_DISABLE_SATA2);
- break;
- case PCI_DEVFN(31, 6): /* Thermal Subsystem */
- RCBA32_OR(FD, PCH_DISABLE_THERMAL);
- break;
- }
-}
-
-/* Check if any port in set X to X+3 is enabled */
-static int pch_pcie_check_set_enabled(device_t dev)
-{
- device_t port;
- int port_func;
- int dev_func = PCI_FUNC(dev->path.pci.devfn);
-
- printk(BIOS_DEBUG, "%s: check set enabled\n", dev_path(dev));
-
- /* Go through static device tree list of devices
- * because enumeration is still in progress */
- for (port = all_devices; port; port = port->next) {
- /* Only care about PCIe root ports */
- if (PCI_SLOT(port->path.pci.devfn) !=
- PCI_SLOT(dev->path.pci.devfn))
- continue;
-
- /* Check if port is in range and enabled */
- port_func = PCI_FUNC(port->path.pci.devfn);
- if (port_func >= dev_func &&
- port_func < (dev_func + 4) &&
- port->enabled)
- return 1;
- }
-
- /* None of the ports in this set are enabled */
- return 0;
-}
-
-/* RPFN is a write-once register so keep a copy until it is written */
-static u32 new_rpfn;
-
-/* Swap function numbers assigned to two PCIe Root Ports */
-static void pch_pcie_function_swap(u8 old_fn, u8 new_fn)
-{
- u32 old_rpfn = new_rpfn;
-
- printk(BIOS_DEBUG, "PCH: Remap PCIe function %d to %d\n",
- old_fn, new_fn);
-
- new_rpfn &= ~(RPFN_FNMASK(old_fn) | RPFN_FNMASK(new_fn));
-
- /* Old function set to new function and disabled */
- new_rpfn |= RPFN_FNSET(old_fn, RPFN_FNGET(old_rpfn, new_fn));
- new_rpfn |= RPFN_FNSET(new_fn, RPFN_FNGET(old_rpfn, old_fn));
-}
-
-/* Update devicetree with new Root Port function number assignment */
-static void pch_pcie_devicetree_update(void)
-{
- device_t dev;
-
- /* Update the function numbers in the static devicetree */
- for (dev = all_devices; dev; dev = dev->next) {
- u8 new_devfn;
-
- /* Only care about PCH PCIe root ports */
- if (PCI_SLOT(dev->path.pci.devfn) !=
- PCH_PCIE_DEV_SLOT)
- continue;
-
- /* Determine the new devfn for this port */
- new_devfn = PCI_DEVFN(PCH_PCIE_DEV_SLOT,
- RPFN_FNGET(new_rpfn,
- PCI_FUNC(dev->path.pci.devfn)));
-
- if (dev->path.pci.devfn != new_devfn) {
- printk(BIOS_DEBUG,
- "PCH: PCIe map %02x.%1x -> %02x.%1x\n",
- PCI_SLOT(dev->path.pci.devfn),
- PCI_FUNC(dev->path.pci.devfn),
- PCI_SLOT(new_devfn), PCI_FUNC(new_devfn));
-
- dev->path.pci.devfn = new_devfn;
- }
- }
-}
-
-/* Special handling for PCIe Root Port devices */
-static void pch_pcie_enable(device_t dev)
-{
- struct southbridge_intel_ibexpeak_config *config = dev->chip_info;
- u32 reg32;
-
- /*
- * Save a copy of the Root Port Function Number map when
- * starting to walk the list of PCIe Root Ports so it can
- * be updated locally and written out when the last port
- * has been processed.
- */
- if (PCI_FUNC(dev->path.pci.devfn) == 0) {
- new_rpfn = RCBA32(RPFN);
-
- /*
- * Enable Root Port coalescing if the first port is disabled
- * or the other devices will not be enumerated by the OS.
- */
- if (!dev->enabled)
- config->pcie_port_coalesce = 1;
-
- if (config->pcie_port_coalesce)
- printk(BIOS_INFO,
- "PCH: PCIe Root Port coalescing is enabled\n");
- }
-
- if (!dev->enabled) {
- printk(BIOS_DEBUG, "%s: Disabling device\n", dev_path(dev));
-
- /*
- * PCIE Power Savings for PantherPoint and CougarPoint/B1+
- *
- * If PCIe 0-3 disabled set Function 0 0xE2[0] = 1
- * If PCIe 4-7 disabled set Function 4 0xE2[0] = 1
- *
- * This check is done here instead of pcie driver
- * because the pcie driver enable() handler is not
- * called unless the device is enabled.
- */
- if ((PCI_FUNC(dev->path.pci.devfn) == 0 ||
- PCI_FUNC(dev->path.pci.devfn) == 4)) {
- /* Handle workaround for PPT and CPT/B1+ */
- if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B1) &&
- !pch_pcie_check_set_enabled(dev)) {
- u8 reg8 = pci_read_config8(dev, 0xe2);
- reg8 |= 1;
- pci_write_config8(dev, 0xe2, reg8);
- }
-
- /*
- * Enable Clock Gating for shared PCIe resources
- * before disabling this particular port.
- */
- pci_write_config8(dev, 0xe1, 0x3c);
- }
-
- /* Ensure memory, io, and bus master are all disabled */
- reg32 = pci_read_config32(dev, PCI_COMMAND);
- reg32 &= ~(PCI_COMMAND_MASTER |
- PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
- pci_write_config32(dev, PCI_COMMAND, reg32);
-
- /* Do not claim downstream transactions for PCIe ports */
- new_rpfn |= RPFN_HIDE(PCI_FUNC(dev->path.pci.devfn));
-
- /* Hide this device if possible */
- pch_hide_devfn(dev->path.pci.devfn);
- } else {
- int fn;
-
- /*
- * Check if there is a lower disabled port to swap with this
- * port in order to maintain linear order starting at zero.
- */
- if (config->pcie_port_coalesce) {
- for (fn=0; fn < PCI_FUNC(dev->path.pci.devfn); fn++) {
- if (!(new_rpfn & RPFN_HIDE(fn)))
- continue;
-
- /* Swap places with this function */
- pch_pcie_function_swap(
- PCI_FUNC(dev->path.pci.devfn), fn);
- break;
- }
- }
-
- /* Enable SERR */
- reg32 = pci_read_config32(dev, PCI_COMMAND);
- reg32 |= PCI_COMMAND_SERR;
- pci_write_config32(dev, PCI_COMMAND, reg32);
- }
-
- /*
- * When processing the last PCIe root port we can now
- * update the Root Port Function Number and Hide register.
- */
- if (PCI_FUNC(dev->path.pci.devfn) == 7) {
- printk(BIOS_SPEW, "PCH: RPFN 0x%08x -> 0x%08x\n",
- RCBA32(RPFN), new_rpfn);
- RCBA32(RPFN) = new_rpfn;
-
- /* Update static devictree with new function numbers */
- if (config->pcie_port_coalesce)
- pch_pcie_devicetree_update();
- }
-}
-
-void pch_enable(device_t dev)
-{
- u32 reg32;
-
- /* PCH PCIe Root Ports get special handling */
- if (PCI_SLOT(dev->path.pci.devfn) == PCH_PCIE_DEV_SLOT)
- return pch_pcie_enable(dev);
-
- if (!dev->enabled) {
- printk(BIOS_DEBUG, "%s: Disabling device\n", dev_path(dev));
-
- /* Ensure memory, io, and bus master are all disabled */
- reg32 = pci_read_config32(dev, PCI_COMMAND);
- reg32 &= ~(PCI_COMMAND_MASTER |
- PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
- pci_write_config32(dev, PCI_COMMAND, reg32);
-
- /* Hide this device if possible */
- pch_hide_devfn(dev->path.pci.devfn);
- } else {
- /* Enable SERR */
- reg32 = pci_read_config32(dev, PCI_COMMAND);
- reg32 |= PCI_COMMAND_SERR;
- pci_write_config32(dev, PCI_COMMAND, reg32);
- }
-}
-
-struct chip_operations southbridge_intel_ibexpeak_ops = {
- CHIP_NAME("Intel Series 5 (Ibex Peak) Southbridge")
- .enable_dev = pch_enable,
-};
-#endif