mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 08:58:07 +00:00
49c7e60022
Implement required callbacks to prepare for enabling hierarchical irqdomains on IOAPICs. After the conversion we can remove quite some code from the old implementation. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Tested-by: Joerg Roedel <jroedel@suse.de> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: David Cohen <david.a.cohen@linux.intel.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Cc: Jan Beulich <JBeulich@suse.com> Cc: Grant Likely <grant.likely@linaro.org> Link: http://lkml.kernel.org/r/1428905519-23704-34-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
308 lines
8.2 KiB
C
308 lines
8.2 KiB
C
#ifndef _ASM_X86_IO_APIC_H
|
|
#define _ASM_X86_IO_APIC_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/mpspec.h>
|
|
#include <asm/apicdef.h>
|
|
#include <asm/irq_vectors.h>
|
|
#include <asm/x86_init.h>
|
|
/*
|
|
* Intel IO-APIC support for SMP and UP systems.
|
|
*
|
|
* Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
|
|
*/
|
|
|
|
/* I/O Unit Redirection Table */
|
|
#define IO_APIC_REDIR_VECTOR_MASK 0x000FF
|
|
#define IO_APIC_REDIR_DEST_LOGICAL 0x00800
|
|
#define IO_APIC_REDIR_DEST_PHYSICAL 0x00000
|
|
#define IO_APIC_REDIR_SEND_PENDING (1 << 12)
|
|
#define IO_APIC_REDIR_REMOTE_IRR (1 << 14)
|
|
#define IO_APIC_REDIR_LEVEL_TRIGGER (1 << 15)
|
|
#define IO_APIC_REDIR_MASKED (1 << 16)
|
|
|
|
/*
|
|
* The structure of the IO-APIC:
|
|
*/
|
|
union IO_APIC_reg_00 {
|
|
u32 raw;
|
|
struct {
|
|
u32 __reserved_2 : 14,
|
|
LTS : 1,
|
|
delivery_type : 1,
|
|
__reserved_1 : 8,
|
|
ID : 8;
|
|
} __attribute__ ((packed)) bits;
|
|
};
|
|
|
|
union IO_APIC_reg_01 {
|
|
u32 raw;
|
|
struct {
|
|
u32 version : 8,
|
|
__reserved_2 : 7,
|
|
PRQ : 1,
|
|
entries : 8,
|
|
__reserved_1 : 8;
|
|
} __attribute__ ((packed)) bits;
|
|
};
|
|
|
|
union IO_APIC_reg_02 {
|
|
u32 raw;
|
|
struct {
|
|
u32 __reserved_2 : 24,
|
|
arbitration : 4,
|
|
__reserved_1 : 4;
|
|
} __attribute__ ((packed)) bits;
|
|
};
|
|
|
|
union IO_APIC_reg_03 {
|
|
u32 raw;
|
|
struct {
|
|
u32 boot_DT : 1,
|
|
__reserved_1 : 31;
|
|
} __attribute__ ((packed)) bits;
|
|
};
|
|
|
|
struct IO_APIC_route_entry {
|
|
__u32 vector : 8,
|
|
delivery_mode : 3, /* 000: FIXED
|
|
* 001: lowest prio
|
|
* 111: ExtINT
|
|
*/
|
|
dest_mode : 1, /* 0: physical, 1: logical */
|
|
delivery_status : 1,
|
|
polarity : 1,
|
|
irr : 1,
|
|
trigger : 1, /* 0: edge, 1: level */
|
|
mask : 1, /* 0: enabled, 1: disabled */
|
|
__reserved_2 : 15;
|
|
|
|
__u32 __reserved_3 : 24,
|
|
dest : 8;
|
|
} __attribute__ ((packed));
|
|
|
|
struct IR_IO_APIC_route_entry {
|
|
__u64 vector : 8,
|
|
zero : 3,
|
|
index2 : 1,
|
|
delivery_status : 1,
|
|
polarity : 1,
|
|
irr : 1,
|
|
trigger : 1,
|
|
mask : 1,
|
|
reserved : 31,
|
|
format : 1,
|
|
index : 15;
|
|
} __attribute__ ((packed));
|
|
|
|
struct irq_alloc_info;
|
|
struct irq_data;
|
|
|
|
#define IOAPIC_AUTO -1
|
|
#define IOAPIC_EDGE 0
|
|
#define IOAPIC_LEVEL 1
|
|
#define IOAPIC_MAP_ALLOC 0x1
|
|
#define IOAPIC_MAP_CHECK 0x2
|
|
|
|
#ifdef CONFIG_X86_IO_APIC
|
|
|
|
/*
|
|
* # of IO-APICs and # of IRQ routing registers
|
|
*/
|
|
extern int nr_ioapics;
|
|
|
|
extern int mpc_ioapic_id(int ioapic);
|
|
extern unsigned int mpc_ioapic_addr(int ioapic);
|
|
extern struct mp_ioapic_gsi *mp_ioapic_gsi_routing(int ioapic);
|
|
|
|
#define MP_MAX_IOAPIC_PIN 127
|
|
|
|
/* # of MP IRQ source entries */
|
|
extern int mp_irq_entries;
|
|
|
|
/* MP IRQ source entries */
|
|
extern struct mpc_intsrc mp_irqs[MAX_IRQ_SOURCES];
|
|
|
|
/* Older SiS APIC requires we rewrite the index register */
|
|
extern int sis_apic_bug;
|
|
|
|
/* 1 if "noapic" boot option passed */
|
|
extern int skip_ioapic_setup;
|
|
|
|
/* 1 if "noapic" boot option passed */
|
|
extern int noioapicquirk;
|
|
|
|
/* -1 if "noapic" boot option passed */
|
|
extern int noioapicreroute;
|
|
|
|
extern unsigned long io_apic_irqs;
|
|
|
|
#define IO_APIC_IRQ(x) (((x) >= NR_IRQS_LEGACY) || ((1 << (x)) & io_apic_irqs))
|
|
|
|
/*
|
|
* If we use the IO-APIC for IRQ routing, disable automatic
|
|
* assignment of PCI IRQ's.
|
|
*/
|
|
#define io_apic_assign_pci_irqs \
|
|
(mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
|
|
|
|
struct irq_cfg;
|
|
extern void ioapic_insert_resources(void);
|
|
extern int arch_early_ioapic_init(void);
|
|
|
|
extern int native_setup_ioapic_entry(int, struct IO_APIC_route_entry *,
|
|
unsigned int, int,
|
|
struct io_apic_irq_attr *);
|
|
extern void eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg);
|
|
|
|
extern void native_eoi_ioapic_pin(int apic, int pin, int vector);
|
|
|
|
extern int save_ioapic_entries(void);
|
|
extern void mask_ioapic_entries(void);
|
|
extern int restore_ioapic_entries(void);
|
|
|
|
extern void setup_ioapic_ids_from_mpc(void);
|
|
extern void setup_ioapic_ids_from_mpc_nocheck(void);
|
|
|
|
struct io_apic_irq_attr {
|
|
int ioapic;
|
|
int ioapic_pin;
|
|
int trigger;
|
|
int polarity;
|
|
};
|
|
|
|
enum ioapic_domain_type {
|
|
IOAPIC_DOMAIN_INVALID,
|
|
IOAPIC_DOMAIN_LEGACY,
|
|
IOAPIC_DOMAIN_STRICT,
|
|
IOAPIC_DOMAIN_DYNAMIC,
|
|
};
|
|
|
|
struct device_node;
|
|
struct irq_domain;
|
|
struct irq_domain_ops;
|
|
|
|
struct ioapic_domain_cfg {
|
|
enum ioapic_domain_type type;
|
|
const struct irq_domain_ops *ops;
|
|
struct device_node *dev;
|
|
};
|
|
|
|
struct mp_ioapic_gsi{
|
|
u32 gsi_base;
|
|
u32 gsi_end;
|
|
};
|
|
extern u32 gsi_top;
|
|
|
|
extern int mp_find_ioapic(u32 gsi);
|
|
extern int mp_find_ioapic_pin(int ioapic, u32 gsi);
|
|
extern u32 mp_pin_to_gsi(int ioapic, int pin);
|
|
extern int mp_map_gsi_to_irq(u32 gsi, unsigned int flags,
|
|
struct irq_alloc_info *info);
|
|
extern void mp_unmap_irq(int irq);
|
|
extern int mp_register_ioapic(int id, u32 address, u32 gsi_base,
|
|
struct ioapic_domain_cfg *cfg);
|
|
extern int mp_unregister_ioapic(u32 gsi_base);
|
|
extern int mp_ioapic_registered(u32 gsi_base);
|
|
extern int mp_irqdomain_map(struct irq_domain *domain, unsigned int virq,
|
|
irq_hw_number_t hwirq);
|
|
extern void mp_irqdomain_unmap(struct irq_domain *domain, unsigned int virq);
|
|
extern int mp_irqdomain_alloc(struct irq_domain *domain, unsigned int virq,
|
|
unsigned int nr_irqs, void *arg);
|
|
extern void mp_irqdomain_free(struct irq_domain *domain, unsigned int virq,
|
|
unsigned int nr_irqs);
|
|
extern void mp_irqdomain_activate(struct irq_domain *domain,
|
|
struct irq_data *irq_data);
|
|
extern void mp_irqdomain_deactivate(struct irq_domain *domain,
|
|
struct irq_data *irq_data);
|
|
extern int mp_irqdomain_ioapic_idx(struct irq_domain *domain);
|
|
extern void ioapic_set_alloc_attr(struct irq_alloc_info *info,
|
|
int node, int trigger, int polarity);
|
|
extern int mp_set_gsi_attr(u32 gsi, int trigger, int polarity, int node);
|
|
|
|
extern void mp_save_irq(struct mpc_intsrc *m);
|
|
|
|
extern void disable_ioapic_support(void);
|
|
|
|
extern void __init native_io_apic_init_mappings(void);
|
|
extern unsigned int native_io_apic_read(unsigned int apic, unsigned int reg);
|
|
extern void native_io_apic_write(unsigned int apic, unsigned int reg, unsigned int val);
|
|
extern void native_io_apic_modify(unsigned int apic, unsigned int reg, unsigned int val);
|
|
extern void native_disable_io_apic(void);
|
|
extern void native_io_apic_print_entries(unsigned int apic, unsigned int nr_entries);
|
|
extern void intel_ir_io_apic_print_entries(unsigned int apic, unsigned int nr_entries);
|
|
extern int native_ioapic_set_affinity(struct irq_data *,
|
|
const struct cpumask *,
|
|
bool);
|
|
|
|
static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
|
|
{
|
|
return x86_io_apic_ops.read(apic, reg);
|
|
}
|
|
|
|
static inline void io_apic_write(unsigned int apic, unsigned int reg, unsigned int value)
|
|
{
|
|
x86_io_apic_ops.write(apic, reg, value);
|
|
}
|
|
static inline void io_apic_modify(unsigned int apic, unsigned int reg, unsigned int value)
|
|
{
|
|
x86_io_apic_ops.modify(apic, reg, value);
|
|
}
|
|
|
|
extern void io_apic_eoi(unsigned int apic, unsigned int vector);
|
|
|
|
extern void setup_IO_APIC(void);
|
|
extern void enable_IO_APIC(void);
|
|
extern void disable_IO_APIC(void);
|
|
extern void setup_ioapic_dest(void);
|
|
extern int IO_APIC_get_PCI_irq_vector(int bus, int devfn, int pin);
|
|
extern void print_IO_APICs(void);
|
|
#else /* !CONFIG_X86_IO_APIC */
|
|
|
|
#define IO_APIC_IRQ(x) 0
|
|
#define io_apic_assign_pci_irqs 0
|
|
#define setup_ioapic_ids_from_mpc x86_init_noop
|
|
static inline void ioapic_insert_resources(void) { }
|
|
static inline int arch_early_ioapic_init(void) { return 0; }
|
|
static inline void print_IO_APICs(void) {}
|
|
#define gsi_top (NR_IRQS_LEGACY)
|
|
static inline int mp_find_ioapic(u32 gsi) { return 0; }
|
|
static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; }
|
|
static inline int mp_map_gsi_to_irq(u32 gsi, unsigned int flags,
|
|
struct irq_alloc_info *info)
|
|
{
|
|
return gsi;
|
|
}
|
|
|
|
static inline void mp_unmap_irq(int irq) { }
|
|
|
|
static inline int save_ioapic_entries(void)
|
|
{
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static inline void mask_ioapic_entries(void) { }
|
|
static inline int restore_ioapic_entries(void)
|
|
{
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static inline void mp_save_irq(struct mpc_intsrc *m) { };
|
|
static inline void disable_ioapic_support(void) { }
|
|
#define native_io_apic_init_mappings NULL
|
|
#define native_io_apic_read NULL
|
|
#define native_io_apic_write NULL
|
|
#define native_io_apic_modify NULL
|
|
#define native_disable_io_apic NULL
|
|
#define native_io_apic_print_entries NULL
|
|
#define native_ioapic_set_affinity NULL
|
|
#define native_setup_ioapic_entry NULL
|
|
#define native_eoi_ioapic_pin NULL
|
|
|
|
static inline void setup_IO_APIC(void) { }
|
|
static inline void enable_IO_APIC(void) { }
|
|
static inline void setup_ioapic_dest(void) { }
|
|
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_IO_APIC_H */
|