forked from mirrors/linux
38aa66fcb7
Implement xen_register_gsi to setup the correct triggering and polarity properties of a gsi. Implement xen_register_pirq to register a particular gsi as pirq and receive interrupts as events. Call xen_setup_pirqs to register all the legacy ISA irqs as pirqs. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
191 lines
5 KiB
C
191 lines
5 KiB
C
/*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __XEN_PUBLIC_PHYSDEV_H__
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#define __XEN_PUBLIC_PHYSDEV_H__
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/*
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* Prototype for this hypercall is:
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* int physdev_op(int cmd, void *args)
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* @cmd == PHYSDEVOP_??? (physdev operation).
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* @args == Operation-specific extra arguments (NULL if none).
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*/
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/*
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* Notify end-of-interrupt (EOI) for the specified IRQ.
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* @arg == pointer to physdev_eoi structure.
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*/
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#define PHYSDEVOP_eoi 12
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struct physdev_eoi {
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/* IN */
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uint32_t irq;
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};
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/*
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* Query the status of an IRQ line.
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* @arg == pointer to physdev_irq_status_query structure.
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*/
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#define PHYSDEVOP_irq_status_query 5
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struct physdev_irq_status_query {
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/* IN */
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uint32_t irq;
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/* OUT */
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uint32_t flags; /* XENIRQSTAT_* */
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};
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/* Need to call PHYSDEVOP_eoi when the IRQ has been serviced? */
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#define _XENIRQSTAT_needs_eoi (0)
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#define XENIRQSTAT_needs_eoi (1U<<_XENIRQSTAT_needs_eoi)
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/* IRQ shared by multiple guests? */
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#define _XENIRQSTAT_shared (1)
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#define XENIRQSTAT_shared (1U<<_XENIRQSTAT_shared)
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/*
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* Set the current VCPU's I/O privilege level.
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* @arg == pointer to physdev_set_iopl structure.
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*/
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#define PHYSDEVOP_set_iopl 6
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struct physdev_set_iopl {
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/* IN */
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uint32_t iopl;
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};
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/*
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* Set the current VCPU's I/O-port permissions bitmap.
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* @arg == pointer to physdev_set_iobitmap structure.
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*/
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#define PHYSDEVOP_set_iobitmap 7
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struct physdev_set_iobitmap {
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/* IN */
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uint8_t * bitmap;
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uint32_t nr_ports;
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};
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/*
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* Read or write an IO-APIC register.
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* @arg == pointer to physdev_apic structure.
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*/
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#define PHYSDEVOP_apic_read 8
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#define PHYSDEVOP_apic_write 9
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struct physdev_apic {
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/* IN */
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unsigned long apic_physbase;
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uint32_t reg;
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/* IN or OUT */
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uint32_t value;
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};
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/*
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* Allocate or free a physical upcall vector for the specified IRQ line.
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* @arg == pointer to physdev_irq structure.
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*/
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#define PHYSDEVOP_alloc_irq_vector 10
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#define PHYSDEVOP_free_irq_vector 11
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struct physdev_irq {
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/* IN */
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uint32_t irq;
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/* IN or OUT */
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uint32_t vector;
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};
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#define MAP_PIRQ_TYPE_MSI 0x0
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#define MAP_PIRQ_TYPE_GSI 0x1
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#define MAP_PIRQ_TYPE_UNKNOWN 0x2
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#define PHYSDEVOP_map_pirq 13
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struct physdev_map_pirq {
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domid_t domid;
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/* IN */
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int type;
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/* IN */
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int index;
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/* IN or OUT */
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int pirq;
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/* IN */
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int bus;
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/* IN */
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int devfn;
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/* IN */
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int entry_nr;
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/* IN */
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uint64_t table_base;
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};
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#define PHYSDEVOP_unmap_pirq 14
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struct physdev_unmap_pirq {
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domid_t domid;
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/* IN */
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int pirq;
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};
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/*
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* Argument to physdev_op_compat() hypercall. Superceded by new physdev_op()
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* hypercall since 0x00030202.
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*/
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struct physdev_op {
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uint32_t cmd;
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union {
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struct physdev_irq_status_query irq_status_query;
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struct physdev_set_iopl set_iopl;
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struct physdev_set_iobitmap set_iobitmap;
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struct physdev_apic apic_op;
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struct physdev_irq irq_op;
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} u;
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};
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#define PHYSDEVOP_setup_gsi 21
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struct physdev_setup_gsi {
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int gsi;
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/* IN */
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uint8_t triggering;
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/* IN */
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uint8_t polarity;
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/* IN */
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};
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#define PHYSDEVOP_get_nr_pirqs 22
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struct physdev_nr_pirqs {
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/* OUT */
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uint32_t nr_pirqs;
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};
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/*
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* Notify that some PIRQ-bound event channels have been unmasked.
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* ** This command is obsolete since interface version 0x00030202 and is **
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* ** unsupported by newer versions of Xen. **
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*/
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#define PHYSDEVOP_IRQ_UNMASK_NOTIFY 4
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/*
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* These all-capitals physdev operation names are superceded by the new names
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* (defined above) since interface version 0x00030202.
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*/
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#define PHYSDEVOP_IRQ_STATUS_QUERY PHYSDEVOP_irq_status_query
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#define PHYSDEVOP_SET_IOPL PHYSDEVOP_set_iopl
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#define PHYSDEVOP_SET_IOBITMAP PHYSDEVOP_set_iobitmap
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#define PHYSDEVOP_APIC_READ PHYSDEVOP_apic_read
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#define PHYSDEVOP_APIC_WRITE PHYSDEVOP_apic_write
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#define PHYSDEVOP_ASSIGN_VECTOR PHYSDEVOP_alloc_irq_vector
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#define PHYSDEVOP_FREE_VECTOR PHYSDEVOP_free_irq_vector
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#define PHYSDEVOP_IRQ_NEEDS_UNMASK_NOTIFY XENIRQSTAT_needs_eoi
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#define PHYSDEVOP_IRQ_SHARED XENIRQSTAT_shared
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#endif /* __XEN_PUBLIC_PHYSDEV_H__ */
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