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authorAldo Cortesi <aldo@nullcube.com>2016-05-28 13:09:35 +1200
committerAldo Cortesi <aldo@nullcube.com>2016-05-28 13:09:35 +1200
commit735bbe52e10f2f11275942db0ded8cb681f4b60d (patch)
treee769c1e3842d7256858b43c754661acd17579c7e /pathod/templates/examples_context.html
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/*
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#ifndef __XEN_PUBLIC_PHYSDEV_H__
#define __XEN_PUBLIC_PHYSDEV_H__

/*
 * Prototype for this hypercall is:
 *  int physdev_op(int cmd, void *args)
 * @cmd  == PHYSDEVOP_??? (physdev operation).
 * @args == Operation-specific extra arguments (NULL if none).
 */

/*
 * Notify end-of-interrupt (EOI) for the specified IRQ.
 * @arg == pointer to physdev_eoi structure.
 */
#define PHYSDEVOP_eoi                   12
struct physdev_eoi {
    /* IN */
    uint32_t irq;
};
typedef struct physdev_eoi physdev_eoi_t;
DEFINE_XEN_GUEST_HANDLE(physdev_eoi_t);

/*
 * Query the status of an IRQ line.
 * @arg == pointer to physdev_irq_status_query structure.
 */
#define PHYSDEVOP_irq_status_query       5
struct physdev_irq_status_query {
    /* IN */
    uint32_t irq;
    /* OUT */
    uint32_t flags; /* XENIRQSTAT_* */
};
typedef struct physdev_irq_status_query physdev_irq_status_query_t;
DEFINE_XEN_GUEST_HANDLE(physdev_irq_status_query_t);

/* Need to call PHYSDEVOP_eoi when the IRQ has been serviced? */
#define _XENIRQSTAT_needs_eoi   (0)
#define  XENIRQSTAT_needs_eoi   (1U<<_XENIRQSTAT_needs_eoi)

/* IRQ shared by multiple guests? */
#define _XENIRQSTAT_shared      (1)
#define  XENIRQSTAT_shared      (1U<<_XENIRQSTAT_shared)

/*
 * Set the current VCPU's I/O privilege level.
 * @arg == pointer to physdev_set_iopl structure.
 */
#define PHYSDEVOP_set_iopl               6
struct physdev_set_iopl {
    /* IN */
    uint32_t iopl;
};
typedef struct physdev_set_iopl physdev_set_iopl_t;
DEFINE_XEN_GUEST_HANDLE(physdev_set_iopl_t);

/*
 * Set the current VCPU's I/O-port permissions bitmap.
 * @arg == pointer to physdev_set_iobitmap structure.
 */
#define PHYSDEVOP_set_iobitmap           7
struct physdev_set_iobitmap {
    /* IN */
    XEN_GUEST_HANDLE_00030205(uint8_t) bitmap;
    uint32_t nr_ports;
};
typedef struct physdev_set_iobitmap physdev_set_iobitmap_t;
DEFINE_XEN_GUEST_HANDLE(physdev_set_iobitmap_t);

/*
 * Read or write an IO-APIC register.
 * @arg == pointer to physdev_apic structure.
 */
#define PHYSDEVOP_apic_read              8
#define PHYSDEVOP_apic_write             9
struct physdev_apic {
    /* IN */
    unsigned long apic_physbase;
    uint32_t reg;
    /* IN or OUT */
    uint32_t value;
};
typedef struct physdev_apic physdev_apic_t;
DEFINE_XEN_GUEST_HANDLE(physdev_apic_t);

/*
 * Allocate or free a physical upcall vector for the specified IRQ line.
 * @arg == pointer to physdev_irq structure.
 */
#define PHYSDEVOP_alloc_irq_vector      10
#define PHYSDEVOP_free_irq_vector       11
struct physdev_irq {
    /* IN */
    uint32_t irq;
    /* IN or OUT */
    uint32_t vector;
};
typedef struct physdev_irq physdev_irq_t;
DEFINE_XEN_GUEST_HANDLE(physdev_irq_t);

/*
 * Argument to physdev_op_compat() hypercall. Superceded by new physdev_op()
 * hypercall since 0x00030202.
 */
struct physdev_op {
    uint32_t cmd;
    union {
        struct physdev_irq_status_query      irq_status_query;
        struct physdev_set_iopl              set_iopl;
        struct physdev_set_iobitmap          set_iobitmap;
        struct physdev_apic                  apic_op;
        struct physdev_irq                   irq_op;
    } u;
};
typedef struct physdev_op physdev_op_t;
DEFINE_XEN_GUEST_HANDLE(physdev_op_t);

/*
 * Notify that some PIRQ-bound event channels have been unmasked.
 * ** This command is obsolete since interface version 0x00030202 and is **
 * ** unsupported by newer versions of Xen.                              **
 */
#define PHYSDEVOP_IRQ_UNMASK_NOTIFY      4

/*
 * These all-capitals physdev operation names are superceded by the new names
 * (defined above) since interface version 0x00030202.
 */
#define PHYSDEVOP_IRQ_STATUS_QUERY       PHYSDEVOP_irq_status_query
#define PHYSDEVOP_SET_IOPL               PHYSDEVOP_set_iopl
#define PHYSDEVOP_SET_IOBITMAP           PHYSDEVOP_set_iobitmap
#define PHYSDEVOP_APIC_READ              PHYSDEVOP_apic_read
#define PHYSDEVOP_APIC_WRITE             PHYSDEVOP_apic_write
#define PHYSDEVOP_ASSIGN_VECTOR          PHYSDEVOP_alloc_irq_vector
#define PHYSDEVOP_FREE_VECTOR            PHYSDEVOP_free_irq_vector
#define PHYSDEVOP_IRQ_NEEDS_UNMASK_NOTIFY XENIRQSTAT_needs_eoi
#define PHYSDEVOP_IRQ_SHARED             XENIRQSTAT_shared

#endif /* __XEN_PUBLIC_PHYSDEV_H__ */

/*
 * Local variables:
 * mode: C
 * c-set-style: "BSD"
 * c-basic-offset: 4
 * tab-width: 4
 * indent-tabs-mode: nil
 * End:
 */