diff options
Diffstat (limited to 'freebsd/sys/i386/include/machine/intr_machdep.h')
| -rw-r--r-- | freebsd/sys/i386/include/machine/intr_machdep.h | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/freebsd/sys/i386/include/machine/intr_machdep.h b/freebsd/sys/i386/include/machine/intr_machdep.h index 123966eb..a8dd4564 100644 --- a/freebsd/sys/i386/include/machine/intr_machdep.h +++ b/freebsd/sys/i386/include/machine/intr_machdep.h @@ -44,12 +44,25 @@ * allocate IDT vectors. * * The first 255 IRQs (0 - 254) are reserved for ISA IRQs and PCI intline IRQs. - * IRQ values beyond 256 are used by MSI. We leave 255 unused to avoid - * confusion since 255 is used in PCI to indicate an invalid IRQ. + * IRQ values from 256 to 767 are used by MSI. When running under the Xen + * Hypervisor, IRQ values from 768 to 4863 are available for binding to + * event channel events. We leave 255 unused to avoid confusion since 255 is + * used in PCI to indicate an invalid IRQ. */ #define NUM_MSI_INTS 512 #define FIRST_MSI_INT 256 -#define NUM_IO_INTS (FIRST_MSI_INT + NUM_MSI_INTS) +#ifdef XENHVM +#include <xen/xen-os.h> +#include <xen/interface/event_channel.h> +#define NUM_EVTCHN_INTS NR_EVENT_CHANNELS +#define FIRST_EVTCHN_INT \ + (FIRST_MSI_INT + NUM_MSI_INTS) +#define LAST_EVTCHN_INT \ + (FIRST_EVTCHN_INT + NUM_EVTCHN_INTS - 1) +#else /* !XENHVM */ +#define NUM_EVTCHN_INTS 0 +#endif +#define NUM_IO_INTS (FIRST_MSI_INT + NUM_MSI_INTS + NUM_EVTCHN_INTS) /* * Default base address for MSI messages on x86 platforms. @@ -70,7 +83,7 @@ #ifndef LOCORE -typedef void inthand_t(u_int cs, u_int ef, u_int esp, u_int ss); +typedef void inthand_t(void); #define IDTVEC(name) __CONCAT(X,name) @@ -90,10 +103,11 @@ struct pic { int (*pic_vector)(struct intsrc *); int (*pic_source_pending)(struct intsrc *); void (*pic_suspend)(struct pic *); - void (*pic_resume)(struct pic *); + void (*pic_resume)(struct pic *, bool suspend_cancelled); int (*pic_config_intr)(struct intsrc *, enum intr_trigger, enum intr_polarity); int (*pic_assign_cpu)(struct intsrc *, u_int apic_id); + void (*pic_reprogram_pin)(struct intsrc *); TAILQ_ENTRY(pic) pics; }; @@ -120,8 +134,14 @@ struct intsrc { struct trapframe; +#ifdef SMP +extern cpuset_t intr_cpus; +#endif extern struct mtx icu_lock; extern int elcr_found; +#ifdef SMP +extern int msix_disable_migration; +#endif #ifndef DEV_ATPIC void atpic_reset(void); @@ -131,7 +151,9 @@ int elcr_probe(void); enum intr_trigger elcr_read_trigger(u_int irq); void elcr_resume(void); void elcr_write_trigger(u_int irq, enum intr_trigger trigger); +#ifdef SMP void intr_add_cpu(u_int cpu); +#endif int intr_add_handler(const char *name, int vector, driver_filter_t filter, driver_intr_t handler, void *arg, enum intr_type flags, void **cookiep); #ifdef SMP @@ -146,8 +168,9 @@ struct intsrc *intr_lookup_source(int vector); int intr_register_pic(struct pic *pic); int intr_register_source(struct intsrc *isrc); int intr_remove_handler(void *cookie); -void intr_resume(void); +void intr_resume(bool suspend_cancelled); void intr_suspend(void); +void intr_reprogram(void); void intrcnt_add(const char *name, u_long **countp); void nexus_add_irq(u_long irq); int msi_alloc(device_t dev, int count, int maxcount, int *irqs); |