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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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905e75c46d
We unified the Freescale pci/pcie initialization by changing the fsl_pci to a platform driver. In previous PCI code architecture the initialization routine is called at board_setup_arch stage. Now the initialization is done in probe function which is architectural better. Also It's convenient for adding PM support for PCI controller in later patch. Now we registered pci controllers as platform devices. So we combine two initialization code as one platform driver. Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
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* P2041 RDB Setup
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*
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* Copyright 2011 Freescale Semiconductor Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/kdev_t.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/phy.h>
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#include <asm/time.h>
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#include <asm/machdep.h>
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#include <asm/pci-bridge.h>
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#include <mm/mmu_decl.h>
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#include <asm/prom.h>
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#include <asm/udbg.h>
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#include <asm/mpic.h>
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#include <linux/of_platform.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include <asm/ehv_pic.h>
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#include "corenet_ds.h"
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/*
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* Called very early, device-tree isn't unflattened
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*/
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static int __init p2041_rdb_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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#ifdef CONFIG_SMP
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extern struct smp_ops_t smp_85xx_ops;
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#endif
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if (of_flat_dt_is_compatible(root, "fsl,P2041RDB"))
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return 1;
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/* Check if we're running under the Freescale hypervisor */
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if (of_flat_dt_is_compatible(root, "fsl,P2041RDB-hv")) {
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ppc_md.init_IRQ = ehv_pic_init;
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ppc_md.get_irq = ehv_pic_get_irq;
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ppc_md.restart = fsl_hv_restart;
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ppc_md.power_off = fsl_hv_halt;
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ppc_md.halt = fsl_hv_halt;
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#ifdef CONFIG_SMP
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/*
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* Disable the timebase sync operations because we can't write
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* to the timebase registers under the hypervisor.
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*/
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smp_85xx_ops.give_timebase = NULL;
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smp_85xx_ops.take_timebase = NULL;
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#endif
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return 1;
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}
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return 0;
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}
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define_machine(p2041_rdb) {
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.name = "P2041 RDB",
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.probe = p2041_rdb_probe,
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.setup_arch = corenet_ds_setup_arch,
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.init_IRQ = corenet_ds_pic_init,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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#endif
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.get_irq = mpic_get_coreint_irq,
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.restart = fsl_rstcr_restart,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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.power_save = e500_idle,
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};
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machine_arch_initcall(p2041_rdb, corenet_ds_publish_devices);
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#ifdef CONFIG_SWIOTLB
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machine_arch_initcall(p2041_rdb, swiotlb_setup_bus_notifier);
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#endif
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