mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 08:16:49 +07:00
6b474b8224
Add the six routines required to setup interrupt remapping with the AMD IOMMU. Also put it all together into the AMD specific irq_remap_ops. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2012 Advanced Micro Devices, Inc.
|
|
* Author: Joerg Roedel <joerg.roedel@amd.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* This header file contains stuff that is shared between different interrupt
|
|
* remapping drivers but with no need to be visible outside of the IOMMU layer.
|
|
*/
|
|
|
|
#ifndef __IRQ_REMAPPING_H
|
|
#define __IRQ_REMAPPING_H
|
|
|
|
#ifdef CONFIG_IRQ_REMAP
|
|
|
|
struct IO_APIC_route_entry;
|
|
struct io_apic_irq_attr;
|
|
struct irq_data;
|
|
struct cpumask;
|
|
struct pci_dev;
|
|
struct msi_msg;
|
|
|
|
extern int disable_irq_remap;
|
|
extern int disable_sourceid_checking;
|
|
extern int no_x2apic_optout;
|
|
|
|
struct irq_remap_ops {
|
|
/* Check whether Interrupt Remapping is supported */
|
|
int (*supported)(void);
|
|
|
|
/* Initializes hardware and makes it ready for remapping interrupts */
|
|
int (*prepare)(void);
|
|
|
|
/* Enables the remapping hardware */
|
|
int (*enable)(void);
|
|
|
|
/* Disables the remapping hardware */
|
|
void (*disable)(void);
|
|
|
|
/* Reenables the remapping hardware */
|
|
int (*reenable)(int);
|
|
|
|
/* Enable fault handling */
|
|
int (*enable_faulting)(void);
|
|
|
|
/* IO-APIC setup routine */
|
|
int (*setup_ioapic_entry)(int irq, struct IO_APIC_route_entry *,
|
|
unsigned int, int,
|
|
struct io_apic_irq_attr *);
|
|
|
|
/* Set the CPU affinity of a remapped interrupt */
|
|
int (*set_affinity)(struct irq_data *data, const struct cpumask *mask,
|
|
bool force);
|
|
|
|
/* Free an IRQ */
|
|
int (*free_irq)(int);
|
|
|
|
/* Create MSI msg to use for interrupt remapping */
|
|
void (*compose_msi_msg)(struct pci_dev *,
|
|
unsigned int, unsigned int,
|
|
struct msi_msg *, u8);
|
|
|
|
/* Allocate remapping resources for MSI */
|
|
int (*msi_alloc_irq)(struct pci_dev *, int, int);
|
|
|
|
/* Setup the remapped MSI irq */
|
|
int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int);
|
|
|
|
/* Setup interrupt remapping for an HPET MSI */
|
|
int (*setup_hpet_msi)(unsigned int, unsigned int);
|
|
};
|
|
|
|
extern struct irq_remap_ops intel_irq_remap_ops;
|
|
extern struct irq_remap_ops amd_iommu_irq_ops;
|
|
|
|
#else /* CONFIG_IRQ_REMAP */
|
|
|
|
#define irq_remapping_enabled 0
|
|
#define disable_irq_remap 1
|
|
|
|
#endif /* CONFIG_IRQ_REMAP */
|
|
|
|
#endif /* __IRQ_REMAPPING_H */
|