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e561e472a3
The platform's RNG must be available before random_init() in order to be
useful for initial seeding, which in turn means that it needs to be
called from setup_arch(), rather than from an init call. Fortunately,
each platform already has a setup_arch function pointer, which means
it's easy to wire this up. This commit also removes some noisy log
messages that don't add much.
Fixes: a489043f46 ("powerpc/pseries: Implement arch_get_random_long() based on H_RANDOM")
Cc: stable@vger.kernel.org # v3.13+
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220611151015.548325-4-Jason@zx2c4.com
128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright 2006 IBM Corporation.
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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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#include <asm/rtas.h>
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struct device_node;
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void __init 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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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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extern long pseries_machine_check_realmode(struct pt_regs *regs);
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void pSeries_machine_check_log_err(void);
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#ifdef CONFIG_SMP
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extern void smp_init_pseries(void);
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/* Get state of physical CPU from query_cpu_stopped */
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int smp_query_cpu_stopped(unsigned int pcpu);
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#define QCSS_STOPPED 0
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#define QCSS_STOPPING 1
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#define QCSS_NOT_STOPPED 2
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#define QCSS_HARDWARE_ERROR -1
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#define QCSS_HARDWARE_BUSY -2
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#else
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static inline void smp_init_pseries(void) { }
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#endif
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extern void pseries_kexec_cpu_down(int crash_shutdown, int secondary);
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void pseries_machine_kexec(struct kimage *image);
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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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/* 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(__be32,
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struct device_node *);
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extern int dlpar_attach_node(struct device_node *, struct device_node *);
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extern int dlpar_detach_node(struct device_node *);
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extern int dlpar_acquire_drc(u32 drc_index);
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extern int dlpar_release_drc(u32 drc_index);
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extern int dlpar_unisolate_drc(u32 drc_index);
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void queue_hotplug_event(struct pseries_hp_errorlog *hp_errlog);
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int handle_dlpar_errorlog(struct pseries_hp_errorlog *hp_errlog);
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#ifdef CONFIG_MEMORY_HOTPLUG
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int dlpar_memory(struct pseries_hp_errorlog *hp_elog);
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int dlpar_hp_pmem(struct pseries_hp_errorlog *hp_elog);
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#else
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static inline int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
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{
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return -EOPNOTSUPP;
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}
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static inline int dlpar_hp_pmem(struct pseries_hp_errorlog *hp_elog)
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{
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return -EOPNOTSUPP;
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}
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#endif
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#ifdef CONFIG_HOTPLUG_CPU
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int dlpar_cpu(struct pseries_hp_errorlog *hp_elog);
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#else
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static inline int dlpar_cpu(struct pseries_hp_errorlog *hp_elog)
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{
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return -EOPNOTSUPP;
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}
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#endif
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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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extern struct pci_controller_ops pseries_pci_controller_ops;
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int pseries_msi_allocate_domains(struct pci_controller *phb);
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void pseries_msi_free_domains(struct pci_controller *phb);
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unsigned long pseries_memory_block_size(void);
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extern int CMO_PrPSP;
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extern int CMO_SecPSP;
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extern unsigned long CMO_PageSize;
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static inline int cmo_get_primary_psp(void)
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{
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return CMO_PrPSP;
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}
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static inline int cmo_get_secondary_psp(void)
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{
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return CMO_SecPSP;
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}
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static inline unsigned long cmo_get_page_size(void)
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{
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return CMO_PageSize;
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}
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int dlpar_workqueue_init(void);
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extern u32 pseries_security_flavor;
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void pseries_setup_security_mitigations(void);
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#ifdef CONFIG_PPC_64S_HASH_MMU
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void pseries_lpar_read_hblkrm_characteristics(void);
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#else
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static inline void pseries_lpar_read_hblkrm_characteristics(void) { }
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#endif
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void pseries_rng_init(void);
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#endif /* _PSERIES_PSERIES_H */
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