diff options
Diffstat (limited to 'arch/x86/kernel/apic/bigsmp_32.c')
| -rw-r--r-- | arch/x86/kernel/apic/bigsmp_32.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c deleted file mode 100644 index 77555f66c14d..000000000000 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ /dev/null @@ -1,189 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * APIC driver for "bigsmp" xAPIC machines with more than 8 virtual CPUs. - * - * Drives the local APIC in "clustered mode". - */ -#include <linux/cpumask.h> -#include <linux/dmi.h> -#include <linux/smp.h> - -#include <asm/apic.h> -#include <asm/io_apic.h> - -#include "local.h" - -static unsigned bigsmp_get_apic_id(unsigned long x) -{ - return (x >> 24) & 0xFF; -} - -static int bigsmp_apic_id_registered(void) -{ - return 1; -} - -static bool bigsmp_check_apicid_used(physid_mask_t *map, int apicid) -{ - return false; -} - -static int bigsmp_early_logical_apicid(int cpu) -{ - /* on bigsmp, logical apicid is the same as physical */ - return early_per_cpu(x86_cpu_to_apicid, cpu); -} - -/* - * bigsmp enables physical destination mode - * and doesn't use LDR and DFR - */ -static void bigsmp_init_apic_ldr(void) -{ -} - -static void bigsmp_setup_apic_routing(void) -{ - printk(KERN_INFO - "Enabling APIC mode: Physflat. Using %d I/O APICs\n", - nr_ioapics); -} - -static int bigsmp_cpu_present_to_apicid(int mps_cpu) -{ - if (mps_cpu < nr_cpu_ids) - return (int) per_cpu(x86_bios_cpu_apicid, mps_cpu); - - return BAD_APICID; -} - -static void bigsmp_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) -{ - /* For clustered we don't have a good way to do this yet - hack */ - physids_promote(0xFFL, retmap); -} - -static int bigsmp_check_phys_apicid_present(int phys_apicid) -{ - return 1; -} - -static int bigsmp_phys_pkg_id(int cpuid_apic, int index_msb) -{ - return cpuid_apic >> index_msb; -} - -static void bigsmp_send_IPI_allbutself(int vector) -{ - default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector); -} - -static void bigsmp_send_IPI_all(int vector) -{ - default_send_IPI_mask_sequence_phys(cpu_online_mask, vector); -} - -static int dmi_bigsmp; /* can be set by dmi scanners */ - -static int hp_ht_bigsmp(const struct dmi_system_id *d) -{ - printk(KERN_NOTICE "%s detected: force use of apic=bigsmp\n", d->ident); - dmi_bigsmp = 1; - - return 0; -} - - -static const struct dmi_system_id bigsmp_dmi_table[] = { - { hp_ht_bigsmp, "HP ProLiant DL760 G2", - { DMI_MATCH(DMI_BIOS_VENDOR, "HP"), - DMI_MATCH(DMI_BIOS_VERSION, "P44-"), - } - }, - - { hp_ht_bigsmp, "HP ProLiant DL740", - { DMI_MATCH(DMI_BIOS_VENDOR, "HP"), - DMI_MATCH(DMI_BIOS_VERSION, "P47-"), - } - }, - { } /* NULL entry stops DMI scanning */ -}; - -static int probe_bigsmp(void) -{ - if (def_to_bigsmp) - dmi_bigsmp = 1; - else - dmi_check_system(bigsmp_dmi_table); - - return dmi_bigsmp; -} - -static struct apic apic_bigsmp __ro_after_init = { - - .name = "bigsmp", - .probe = probe_bigsmp, - .acpi_madt_oem_check = NULL, - .apic_id_valid = default_apic_id_valid, - .apic_id_registered = bigsmp_apic_id_registered, - - .delivery_mode = APIC_DELIVERY_MODE_FIXED, - .dest_mode_logical = false, - - .disable_esr = 1, - - .check_apicid_used = bigsmp_check_apicid_used, - .init_apic_ldr = bigsmp_init_apic_ldr, - .ioapic_phys_id_map = bigsmp_ioapic_phys_id_map, - .setup_apic_routing = bigsmp_setup_apic_routing, - .cpu_present_to_apicid = bigsmp_cpu_present_to_apicid, - .apicid_to_cpu_present = physid_set_mask_of_physid, - .check_phys_apicid_present = bigsmp_check_phys_apicid_present, - .phys_pkg_id = bigsmp_phys_pkg_id, - - .get_apic_id = bigsmp_get_apic_id, - .set_apic_id = NULL, - - .calc_dest_apicid = apic_default_calc_apicid, - - .send_IPI = default_send_IPI_single_phys, - .send_IPI_mask = default_send_IPI_mask_sequence_phys, - .send_IPI_mask_allbutself = NULL, - .send_IPI_allbutself = bigsmp_send_IPI_allbutself, - .send_IPI_all = bigsmp_send_IPI_all, - .send_IPI_self = default_send_IPI_self, - - .inquire_remote_apic = default_inquire_remote_apic, - - .read = native_apic_mem_read, - .write = native_apic_mem_write, - .eoi_write = native_apic_mem_write, - .icr_read = native_apic_icr_read, - .icr_write = native_apic_icr_write, - .wait_icr_idle = native_apic_wait_icr_idle, - .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, - - .x86_32_early_logical_apicid = bigsmp_early_logical_apicid, -}; - -void __init generic_bigsmp_probe(void) -{ - unsigned int cpu; - - if (!probe_bigsmp()) - return; - - apic = &apic_bigsmp; - - for_each_possible_cpu(cpu) { - if (early_per_cpu(x86_cpu_to_logical_apicid, - cpu) == BAD_APICID) - continue; - early_per_cpu(x86_cpu_to_logical_apicid, cpu) = - bigsmp_early_logical_apicid(cpu); - } - - pr_info("Overriding APIC driver with %s\n", apic_bigsmp.name); -} - -apic_driver(apic_bigsmp); |