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For NUMA emulation, our SLIT should represent the true NUMA topology of the system but our proximity domain to node ID mapping needs to reflect the emulated state. When NUMA emulation has successfully setup fake nodes on the system, a new function, acpi_fake_nodes() is called. This function determines the proximity domain (_PXM) for each true node found on the system. It then finds which emulated nodes have been allocated on this true node as determined by its starting address. The node ID to PXM mapping is changed so that each fake node ID points to the PXM of the true node that it is located on. If the machine failed to register a SLIT, then we assume there is no special requirement for emulated node affinity so we use the default LOCAL_DISTANCE, which is newly exported to this code, as our measurement if the emulated nodes appear in the same PXM. Otherwise, we use REMOTE_DISTANCE. PXM_INVAL and NID_INVAL are also exported to the ACPI header file so that we can compare node_to_pxm() results in generic code (in this case, the SRAT code). Cc: Len Brown <lenb@kernel.org> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
250 lines
6.3 KiB
C
250 lines
6.3 KiB
C
/*
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* acpi.h - ACPI Interface
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*
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* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#ifndef _LINUX_ACPI_H
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#define _LINUX_ACPI_H
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#ifdef CONFIG_ACPI
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#ifndef _LINUX
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#define _LINUX
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#endif
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#include <linux/list.h>
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#include <acpi/acpi.h>
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#include <acpi/acpi_bus.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_numa.h>
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#include <asm/acpi.h>
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#ifdef CONFIG_ACPI
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enum acpi_irq_model_id {
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ACPI_IRQ_MODEL_PIC = 0,
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ACPI_IRQ_MODEL_IOAPIC,
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ACPI_IRQ_MODEL_IOSAPIC,
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ACPI_IRQ_MODEL_PLATFORM,
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ACPI_IRQ_MODEL_COUNT
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};
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extern enum acpi_irq_model_id acpi_irq_model;
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enum acpi_interrupt_id {
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ACPI_INTERRUPT_PMI = 1,
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ACPI_INTERRUPT_INIT,
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ACPI_INTERRUPT_CPEI,
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ACPI_INTERRUPT_COUNT
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};
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#define ACPI_SPACE_MEM 0
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enum acpi_address_range_id {
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ACPI_ADDRESS_RANGE_MEMORY = 1,
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ACPI_ADDRESS_RANGE_RESERVED = 2,
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ACPI_ADDRESS_RANGE_ACPI = 3,
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ACPI_ADDRESS_RANGE_NVS = 4,
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ACPI_ADDRESS_RANGE_COUNT
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};
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/* Table Handlers */
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typedef int (*acpi_table_handler) (struct acpi_table_header *table);
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typedef int (*acpi_table_entry_handler) (struct acpi_subtable_header *header, const unsigned long end);
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char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
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unsigned long acpi_find_rsdp (void);
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int acpi_boot_init (void);
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int acpi_boot_table_init (void);
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int acpi_numa_init (void);
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int acpi_table_init (void);
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int acpi_table_parse (char *id, acpi_table_handler handler);
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int __init acpi_table_parse_entries(char *id, unsigned long table_size,
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int entry_id, acpi_table_entry_handler handler, unsigned int max_entries);
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int acpi_table_parse_madt (enum acpi_madt_type id, acpi_table_entry_handler handler, unsigned int max_entries);
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int acpi_parse_mcfg (struct acpi_table_header *header);
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void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
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/* the following four functions are architecture-dependent */
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#ifdef CONFIG_HAVE_ARCH_PARSE_SRAT
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#define NR_NODE_MEMBLKS MAX_NUMNODES
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#define acpi_numa_slit_init(slit) do {} while (0)
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#define acpi_numa_processor_affinity_init(pa) do {} while (0)
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#define acpi_numa_memory_affinity_init(ma) do {} while (0)
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#define acpi_numa_arch_fixup() do {} while (0)
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#else
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void acpi_numa_slit_init (struct acpi_table_slit *slit);
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void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
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void acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
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void acpi_numa_arch_fixup(void);
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#endif
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#ifdef CONFIG_ACPI_HOTPLUG_CPU
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/* Arch dependent functions for cpu hotplug support */
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int acpi_map_lsapic(acpi_handle handle, int *pcpu);
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int acpi_unmap_lsapic(int cpu);
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#endif /* CONFIG_ACPI_HOTPLUG_CPU */
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int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
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int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
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extern int acpi_mp_config;
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extern struct acpi_mcfg_allocation *pci_mmcfg_config;
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extern int pci_mmcfg_config_num;
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extern int sbf_port;
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extern unsigned long acpi_realmode_flags;
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#else /* !CONFIG_ACPI */
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#define acpi_mp_config 0
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#endif /* !CONFIG_ACPI */
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int acpi_register_gsi (u32 gsi, int triggering, int polarity);
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int acpi_gsi_to_irq (u32 gsi, unsigned int *irq);
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/*
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* This function undoes the effect of one call to acpi_register_gsi().
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* If this matches the last registration, any IRQ resources for gsi
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* are freed.
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*/
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void acpi_unregister_gsi (u32 gsi);
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#ifdef CONFIG_ACPI
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struct acpi_prt_entry {
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struct list_head node;
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struct acpi_pci_id id;
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u8 pin;
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struct {
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acpi_handle handle;
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u32 index;
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} link;
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u32 irq;
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};
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struct acpi_prt_list {
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int count;
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struct list_head entries;
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};
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struct pci_dev;
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int acpi_pci_irq_enable (struct pci_dev *dev);
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void acpi_penalize_isa_irq(int irq, int active);
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void acpi_pci_irq_disable (struct pci_dev *dev);
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struct acpi_pci_driver {
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struct acpi_pci_driver *next;
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int (*add)(acpi_handle handle);
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void (*remove)(acpi_handle handle);
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};
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int acpi_pci_register_driver(struct acpi_pci_driver *driver);
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void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);
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#endif /* CONFIG_ACPI */
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#ifdef CONFIG_ACPI_EC
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extern int ec_read(u8 addr, u8 *val);
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extern int ec_write(u8 addr, u8 val);
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extern int ec_transaction(u8 command,
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const u8 *wdata, unsigned wdata_len,
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u8 *rdata, unsigned rdata_len,
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int force_poll);
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#endif /*CONFIG_ACPI_EC*/
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extern int acpi_blacklisted(void);
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extern void acpi_bios_year(char *s);
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#define ACPI_CSTATE_LIMIT_DEFINED /* for driver builds */
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#ifdef CONFIG_ACPI
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/*
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* Set highest legal C-state
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* 0: C0 okay, but not C1
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* 1: C1 okay, but not C2
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* 2: C2 okay, but not C3 etc.
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*/
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extern unsigned int max_cstate;
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static inline unsigned int acpi_get_cstate_limit(void)
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{
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return max_cstate;
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}
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static inline void acpi_set_cstate_limit(unsigned int new_limit)
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{
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max_cstate = new_limit;
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return;
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}
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#else
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static inline unsigned int acpi_get_cstate_limit(void) { return 0; }
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static inline void acpi_set_cstate_limit(unsigned int new_limit) { return; }
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#endif
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#ifdef CONFIG_ACPI_NUMA
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int acpi_get_pxm(acpi_handle handle);
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int acpi_get_node(acpi_handle *handle);
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#else
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static inline int acpi_get_pxm(acpi_handle handle)
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{
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return 0;
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}
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static inline int acpi_get_node(acpi_handle *handle)
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{
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return 0;
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}
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#endif
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extern int acpi_paddr_to_node(u64 start_addr, u64 size);
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extern int pnpacpi_disabled;
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#define PXM_INVAL (-1)
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#define NID_INVAL (-1)
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#else /* CONFIG_ACPI */
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static inline int acpi_boot_init(void)
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{
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return 0;
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}
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static inline int acpi_boot_table_init(void)
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{
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return 0;
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}
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#endif /* CONFIG_ACPI */
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#endif /*_LINUX_ACPI_H*/
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