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5d376b8fb1
APIC IDs are used with random data types u16, u32, int, unsigned int, unsigned long. Make it all consistently use u32 because that reflects the hardware register width and move the default implementation to local.h as there are no users outside the apic directory. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Sohil Mehta <sohil.mehta@intel.com> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Zhang Rui <rui.zhang@intel.com> Reviewed-by: Arjan van de Ven <arjan@linux.intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20230814085112.981956102@linutronix.de
127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* APIC driver for "bigsmp" xAPIC machines with more than 8 virtual CPUs.
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*
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* Drives the local APIC in "clustered mode".
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*/
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#include <linux/cpumask.h>
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#include <linux/dmi.h>
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#include <linux/smp.h>
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#include <asm/apic.h>
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#include <asm/io_apic.h>
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#include "local.h"
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static unsigned bigsmp_get_apic_id(unsigned long x)
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{
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return (x >> 24) & 0xFF;
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}
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static bool bigsmp_check_apicid_used(physid_mask_t *map, u32 apicid)
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{
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return false;
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}
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static void bigsmp_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
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{
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/* For clustered we don't have a good way to do this yet - hack */
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physids_promote(0xFFL, retmap);
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}
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static int bigsmp_phys_pkg_id(int cpuid_apic, int index_msb)
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{
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return cpuid_apic >> index_msb;
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}
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static void bigsmp_send_IPI_allbutself(int vector)
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{
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default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector);
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}
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static void bigsmp_send_IPI_all(int vector)
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{
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default_send_IPI_mask_sequence_phys(cpu_online_mask, vector);
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}
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static int dmi_bigsmp; /* can be set by dmi scanners */
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static int hp_ht_bigsmp(const struct dmi_system_id *d)
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{
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printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident);
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dmi_bigsmp = 1;
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return 0;
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}
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static const struct dmi_system_id bigsmp_dmi_table[] = {
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{ hp_ht_bigsmp, "HP ProLiant DL760 G2",
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{ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
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DMI_MATCH(DMI_BIOS_VERSION, "P44-"),
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}
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},
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{ hp_ht_bigsmp, "HP ProLiant DL740",
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{ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
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DMI_MATCH(DMI_BIOS_VERSION, "P47-"),
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}
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},
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{ } /* NULL entry stops DMI scanning */
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};
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static int probe_bigsmp(void)
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{
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return dmi_check_system(bigsmp_dmi_table);
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}
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static struct apic apic_bigsmp __ro_after_init = {
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.name = "bigsmp",
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.probe = probe_bigsmp,
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.delivery_mode = APIC_DELIVERY_MODE_FIXED,
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.dest_mode_logical = false,
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.disable_esr = 1,
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.check_apicid_used = bigsmp_check_apicid_used,
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.ioapic_phys_id_map = bigsmp_ioapic_phys_id_map,
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.cpu_present_to_apicid = default_cpu_present_to_apicid,
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.phys_pkg_id = bigsmp_phys_pkg_id,
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.max_apic_id = 0xFE,
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.get_apic_id = bigsmp_get_apic_id,
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.set_apic_id = NULL,
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.calc_dest_apicid = apic_default_calc_apicid,
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.send_IPI = default_send_IPI_single_phys,
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.send_IPI_mask = default_send_IPI_mask_sequence_phys,
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.send_IPI_mask_allbutself = NULL,
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.send_IPI_allbutself = bigsmp_send_IPI_allbutself,
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.send_IPI_all = bigsmp_send_IPI_all,
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.send_IPI_self = default_send_IPI_self,
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.read = native_apic_mem_read,
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.write = native_apic_mem_write,
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.eoi = native_apic_mem_eoi,
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.icr_read = native_apic_icr_read,
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.icr_write = native_apic_icr_write,
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.wait_icr_idle = apic_mem_wait_icr_idle,
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.safe_wait_icr_idle = apic_mem_wait_icr_idle_timeout,
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};
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bool __init apic_bigsmp_possible(bool cmdline_override)
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{
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return apic == &apic_bigsmp || !cmdline_override;
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}
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void __init apic_bigsmp_force(void)
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{
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if (apic != &apic_bigsmp)
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apic_install_driver(&apic_bigsmp);
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}
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apic_driver(apic_bigsmp);
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