From 3a09179f462ad3f6111c7b8ebbad7d78534f9234 Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Thu, 13 Jun 2013 00:13:50 +0200 Subject: 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 --- src/southbridge/intel/ibexpeak/pch.c | 429 ----------------------------------- 1 file changed, 429 deletions(-) delete mode 100644 src/southbridge/intel/ibexpeak/pch.c (limited to 'src/southbridge/intel/ibexpeak/pch.c') 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 -#include -#ifdef __SMM__ -#include -#include -#else /* !__SMM__ */ -#include -#include -#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 -- cgit v1.2.3