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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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d82fb31abc
On pseries machines the detection for max_bus_speed should be done through an OpenFirmware property. This patch adds a function to perform this detection and a hook to perform dynamic adding of the function only for pseries. This is done by overwriting the weak pcibios_root_bridge_prepare function which is called by pci_create_root_bus(). From: Lucas Kannebley Tavares <lucaskt@linux.vnet.ibm.com> Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* Copyright 2006 IBM Corporation.
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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
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _PSERIES_PSERIES_H
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#define _PSERIES_PSERIES_H
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#include <linux/interrupt.h>
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struct device_node;
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extern void request_event_sources_irqs(struct device_node *np,
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irq_handler_t handler, const char *name);
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#include <linux/of.h>
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extern void __init fw_hypertas_feature_init(const char *hypertas,
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unsigned long len);
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extern void __init fw_vec5_feature_init(const char *hypertas,
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unsigned long len);
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struct pt_regs;
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extern int pSeries_system_reset_exception(struct pt_regs *regs);
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extern int pSeries_machine_check_exception(struct pt_regs *regs);
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#ifdef CONFIG_SMP
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extern void smp_init_pseries_mpic(void);
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extern void smp_init_pseries_xics(void);
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#else
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static inline void smp_init_pseries_mpic(void) { };
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static inline void smp_init_pseries_xics(void) { };
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#endif
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#ifdef CONFIG_KEXEC
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extern void setup_kexec_cpu_down_xics(void);
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extern void setup_kexec_cpu_down_mpic(void);
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#else
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static inline void setup_kexec_cpu_down_xics(void) { }
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static inline void setup_kexec_cpu_down_mpic(void) { }
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#endif
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extern void pSeries_final_fixup(void);
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/* Poweron flag used for enabling auto ups restart */
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extern unsigned long rtas_poweron_auto;
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/* Provided by HVC VIO */
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extern void hvc_vio_init_early(void);
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/* Dynamic logical Partitioning/Mobility */
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extern void dlpar_free_cc_nodes(struct device_node *);
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extern void dlpar_free_cc_property(struct property *);
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extern struct device_node *dlpar_configure_connector(u32);
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extern int dlpar_attach_node(struct device_node *);
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extern int dlpar_detach_node(struct device_node *);
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/* Snooze Delay, pseries_idle */
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DECLARE_PER_CPU(long, smt_snooze_delay);
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/* PCI root bridge prepare function override for pseries */
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struct pci_host_bridge;
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int pseries_root_bridge_prepare(struct pci_host_bridge *bridge);
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#endif /* _PSERIES_PSERIES_H */
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