Refactor the code into a simple bitmask lookup table that determines if a given PCI controller is enabled and if its in host/root-complex or agent/end-point mode. Each processor in the PQ3/MPC86xx family specified different encodings for the cfg_host_agt[] and cfg_IO_ports[] boot strapping signals. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
226 lines
5.8 KiB
C
226 lines
5.8 KiB
C
/*
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* Copyright 2009 Freescale Semiconductor, Inc.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/fsl_law.h>
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#include <pci.h>
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struct pci_info {
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u16 agent;
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u16 cfg;
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};
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/* The agent field is a bit mask in which each bit represents the value of
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* cfg_host_agt[] signal and the bit is set of the given interface would be
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* in agent/end-point mode for the given interface.
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*
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* The same idea is true of the cfg field. The bit will be set if the
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* interface would be enabled based on the value of cfg_IO_ports[] signal
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*
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* On MPC86xx/PQ3 based systems:
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* we extract cfg_host_agt from GUTS register PORBMSR
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* we extract cfg_IO_ports from GUTS register PORDEVSR
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*
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* cfg_IO_ports only exist on systems w/PCIe (we set cfg 0 for systems
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* without PCIe)
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*/
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#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8560)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCI] = {
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.agent = (1 << 0) | (1 << 2),
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.cfg = 0,
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},
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};
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#elif defined(CONFIG_MPC8541) || defined(CONFIG_MPC8555)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCI] = {
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.agent = (1 << 0),
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.cfg = 0,
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},
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};
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#elif defined(CONFIG_MPC8536)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCI] = {
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.agent = (1 << 6),
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.cfg = 0,
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},
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 5),
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.cfg = (1 << 2) | (1 << 3) | (1 << 5) | (1 << 7),
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},
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[LAW_TRGT_IF_PCIE_2] = {
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.agent = (1 << 3),
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.cfg = (1 << 5) | (1 << 7),
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},
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[LAW_TRGT_IF_PCIE_3] = {
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.agent = (1 << 1),
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.cfg = (1 << 7),
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},
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};
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#elif defined(CONFIG_MPC8544)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCI] = {
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.agent = (1 << 6),
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.cfg = 0,
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},
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 5),
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.cfg = (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) |
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(1 << 6) | (1 << 7),
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},
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[LAW_TRGT_IF_PCIE_2] = {
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.agent = (1 << 3),
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.cfg = (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7),
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},
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[LAW_TRGT_IF_PCIE_3] = {
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.agent = (1 << 1),
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.cfg = (1 << 6) | (1 << 7),
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},
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};
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#elif defined(CONFIG_MPC8548)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCI_1] = {
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.agent = (1 << 4) | (1 << 6),
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.cfg = 0,
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},
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[LAW_TRGT_IF_PCI_2] = {
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.agent = (1 << 4) | (1 << 6),
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.cfg = 0,
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},
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/* PCI_2 is always host and we dont use iosel to determine enable/disable */
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 0) | (1 << 2),
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.cfg = (1 << 3) | (1 << 4) | (1 << 7),
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},
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};
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#elif defined(CONFIG_MPC8568)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCI] = {
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.agent = (1 << 0) | (1 << 4) | (1 << 6),
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.cfg = 0,
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},
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 0) | (1 << 2) | (1 << 4),
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.cfg = (1 << 3) | (1 << 4) | (1 << 7),
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},
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};
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#elif defined(CONFIG_MPC8569)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 0) | (1 << 6),
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.cfg = (1 << 0) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7) |
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(1 << 8) | (1 << 0xc) | (1 << 0xf),
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},
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};
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#elif defined(CONFIG_MPC8572)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 0) | (1 << 1) | (1 << 4) | (1 << 5),
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.cfg = (1 << 2) | (1 << 3) | (1 << 7) |
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(1 << 0xb) | (1 << 0xc) | (1 << 0xf),
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},
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[LAW_TRGT_IF_PCIE_2] = {
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.agent = (1 << 0) | (1 << 2) | (1 << 4) | (1 << 6),
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.cfg = (1 << 3) | (1 << 7),
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},
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[LAW_TRGT_IF_PCIE_3] = {
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.agent = (1 << 0) | (1 << 3) | (1 << 5) | (1 << 6),
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.cfg = (1 << 7),
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},
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};
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#elif defined(CONFIG_MPC8610)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCI_1] = {
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.agent = (1 << 4) | (1 << 5) | (1 << 6),
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.cfg = 0,
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},
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 0) | (1 << 2) | (1 << 5),
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.cfg = (1 << 1) | (1 << 4),
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},
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[LAW_TRGT_IF_PCIE_2] = {
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.agent = (1 << 0) | (1 << 1) | (1 << 4),
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.cfg = (1 << 0) | (1 << 4),
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},
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};
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#elif defined(CONFIG_MPC8641)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = 0, /* we dont use agent on 8641 */
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.cfg = (1 << 2) | (1 << 3) | (1 << 5) | (1 << 6) |
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(1 << 7) | (1 << 0xe) | (1 << 0xf),
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},
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};
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#elif defined(CONFIG_P1011) || defined(CONFIG_P1020)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 0) | (1 << 1),
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.cfg = (1 << 0) | (1 << 6) | (1 << 0xe) | (1 << 0xf),
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},
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[LAW_TRGT_IF_PCIE_2] = {
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.agent = (1 << 0) | (1 << 2),
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.cfg = (1 << 0xe),
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},
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};
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#elif defined(CONFIG_P2010) || defined(CONFIG_P2020)
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static struct pci_info pci_config_info[] =
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{
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[LAW_TRGT_IF_PCIE_1] = {
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.agent = (1 << 0) | (1 << 1) | (1 << 4) | (1 << 5),
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.cfg = (1 << 0) | (1 << 2) | (1 << 4) | (1 << 6) |
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(1 << 0xd) | (1 << 0xe) | (1 << 0xf),
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},
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[LAW_TRGT_IF_PCIE_2] = {
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.agent = (1 << 0) | (1 << 2) | (1 << 4) | (1 << 6),
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.cfg = (1 << 2) | (1 << 0xe),
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},
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[LAW_TRGT_IF_PCIE_3] = {
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.agent = (1 << 0) | (1 << 3) | (1 << 5) | (1 << 6),
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.cfg = (1 << 2) | (1 << 4),
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},
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};
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#else
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#error Need to define pci_config_info for processor
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#endif
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int is_fsl_pci_agent(enum law_trgt_if trgt, u32 host_agent)
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{
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return ((1 << host_agent) & pci_config_info[trgt].agent);
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}
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int is_fsl_pci_cfg(enum law_trgt_if trgt, u32 io_sel)
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{
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return ((1 << io_sel) & pci_config_info[trgt].cfg);
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}
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