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/*
* Copyright (C) 2007 Advanced Micro Devices, Inc.
* Author: Leo Duran <leo.duran@amd.com>
* Author: Wei Wang <wei.wang2@amd.com> - adapted to xen
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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
*/
#ifndef _ASM_X86_64_AMD_IOMMU_H
#define _ASM_X86_64_AMD_IOMMU_H
#include <xen/init.h>
#include <xen/types.h>
#include <xen/list.h>
#include <xen/spinlock.h>
#include <xen/tasklet.h>
#include <asm/msi.h>
#include <asm/hvm/svm/amd-iommu-defs.h>
#define iommu_found() (!list_empty(&amd_iommu_head))
extern struct list_head amd_iommu_head;
#pragma pack(1)
typedef struct event_entry
{
uint32_t data[4];
} event_entry_t;
typedef struct ppr_entry
{
uint32_t data[4];
} ppr_entry_t;
typedef struct cmd_entry
{
uint32_t data[4];
} cmd_entry_t;
typedef struct dev_entry
{
uint32_t data[8];
} dev_entry_t;
#pragma pack()
struct table_struct {
void *buffer;
unsigned long entries;
unsigned long alloc_size;
};
struct ring_buffer {
void *buffer;
unsigned long entries;
unsigned long alloc_size;
uint32_t tail;
uint32_t head;
spinlock_t lock; /* protect buffer pointers */
};
typedef struct iommu_cap {
uint32_t header; /* offset 00h */
uint32_t base_low; /* offset 04h */
uint32_t base_hi; /* offset 08h */
uint32_t range; /* offset 0Ch */
uint32_t misc; /* offset 10h */
} iommu_cap_t;
struct amd_iommu {
struct list_head list;
spinlock_t lock; /* protect iommu */
u16 seg;
u16 bdf;
struct msi_desc msi;
u16 cap_offset;
iommu_cap_t cap;
u8 ht_flags;
u64 features;
void *mmio_base;
unsigned long mmio_base_phys;
struct table_struct dev_table;
struct ring_buffer cmd_buffer;
struct ring_buffer event_log;
struct ring_buffer ppr_log;
int exclusion_enable;
int exclusion_allow_all;
uint64_t exclusion_base;
uint64_t exclusion_limit;
int enabled;
};
struct ivrs_mappings {
u16 dte_requestor_id;
u8 dte_allow_exclusion;
u8 unity_map_enable;
u8 write_permission;
u8 read_permission;
unsigned long addr_range_start;
unsigned long addr_range_length;
struct amd_iommu *iommu;
/* per device interrupt remapping table */
void *intremap_table;
unsigned long *intremap_inuse;
spinlock_t intremap_lock;
/* ivhd device data settings */
u8 device_flags;
};
extern unsigned int ivrs_bdf_entries;
struct ivrs_mappings *get_ivrs_mappings(u16 seg);
int iterate_ivrs_mappings(int (*)(u16 seg, struct ivrs_mappings *));
int iterate_ivrs_entries(int (*)(u16 seg, struct ivrs_mappings *));
/* iommu tables in guest space */
struct mmio_reg {
uint32_t lo;
uint32_t hi;
};
struct guest_dev_table {
struct mmio_reg reg_base;
uint32_t size;
};
struct guest_buffer {
struct mmio_reg reg_base;
struct mmio_reg reg_tail;
struct mmio_reg reg_head;
uint32_t entries;
};
struct guest_iommu_msi {
uint8_t vector;
uint8_t dest;
uint8_t dest_mode;
uint8_t delivery_mode;
uint8_t trig_mode;
};
/* virtual IOMMU structure */
struct guest_iommu {
struct domain *domain;
spinlock_t lock;
bool_t enabled;
struct guest_dev_table dev_table;
struct guest_buffer cmd_buffer;
struct guest_buffer event_log;
struct guest_buffer ppr_log;
struct tasklet cmd_buffer_tasklet;
uint64_t mmio_base; /* MMIO base address */
/* MMIO regs */
struct mmio_reg reg_ctrl; /* MMIO offset 0018h */
struct mmio_reg reg_status; /* MMIO offset 2020h */
struct mmio_reg reg_ext_feature; /* MMIO offset 0030h */
/* guest interrupt settings */
struct guest_iommu_msi msi;
};
extern bool_t iommuv2_enabled;
#endif /* _ASM_X86_64_AMD_IOMMU_H */
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