hw/device-assignment.h

/*
 * Copyright (c) 2007, Neocleus Corporation.
 * Copyright (c) 2007, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 *
 *  Data structures for storing PCI state
 *
 *  Adapted to kvm by Qumranet
 *
 *  Copyright (c) 2007, Neocleus, Alex Novik (alex@neocleus.com)
 *  Copyright (c) 2007, Neocleus, Guy Zana (guy@neocleus.com)
 *  Copyright (C) 2008, Qumranet, Amit Shah (amit.shah@qumranet.com)
 *  Copyright (C) 2008, Red Hat, Amit Shah (amit.shah@redhat.com)
 */

#ifndef __DEVICE_ASSIGNMENT_H__
#define __DEVICE_ASSIGNMENT_H__

#include <sys/mman.h>
#include "qemu-common.h"
#include "sys-queue.h"
#include "pci.h"

/* From include/linux/pci.h in the kernel sources */
#define PCI_DEVFN(slot, func)   ((((slot) & 0x1f) << 3) | ((func) & 0x07))

/* The number of BARs in the config space header */
#define MAX_IO_REGIONS (6)

typedef struct {
    int type;           /* Memory or port I/O */
    int valid;
    uint32_t base_addr;
    uint32_t size;    /* size of the region */
    int resource_fd;
} PCIRegion;

typedef struct {
    uint8_t bus, dev, func; /* Bus inside domain, device and function */
    int irq;                /* IRQ number */
    uint16_t region_number; /* number of active regions */

    /* Port I/O or MMIO Regions */
    PCIRegion regions[MAX_IO_REGIONS];
    int config_fd;
} PCIDevRegions;

typedef struct {
    target_phys_addr_t e_physbase;
    uint32_t memory_index;
    union {
        void *r_virtbase;    /* mmapped access address for memory regions */
        uint32_t r_baseport; /* the base guest port for I/O regions */
    } u;
    int num;            /* our index within v_addrs[] */
    uint32_t e_size;    /* emulated size of region in bytes */
    uint32_t r_size;    /* real size of region in bytes */
} AssignedDevRegion;

typedef struct {
    PCIDevice dev;
    int intpin;
    uint8_t debug_flags;
    AssignedDevRegion v_addrs[PCI_NUM_REGIONS];
    PCIDevRegions real_device;
    int run;
    int girq;
    unsigned char h_busnr;
    unsigned int h_devfn;
    int bound;
} AssignedDevice;

typedef struct AssignedDevInfo AssignedDevInfo;

struct AssignedDevInfo {
    char name[15];
    int bus;
    int dev;
    int func;
    AssignedDevice *assigned_dev;
    LIST_ENTRY(AssignedDevInfo) next;
    int disable_iommu;
};

PCIDevice *init_assigned_device(AssignedDevInfo *adev, PCIBus *bus);
AssignedDevInfo *add_assigned_device(const char *arg);
void add_assigned_devices(PCIBus *bus, const char **devices, int n_devices);
void remove_assigned_device(AssignedDevInfo *adev);
AssignedDevInfo *get_assigned_device(int pcibus, int slot);
ram_addr_t assigned_dev_load_option_roms(ram_addr_t rom_base_offset);
void assigned_dev_update_irqs(void);

#define MAX_DEV_ASSIGN_CMDLINE 8

extern const char *assigned_devices[MAX_DEV_ASSIGN_CMDLINE];
extern int assigned_devices_index;

#endif              /* __DEVICE_ASSIGNMENT_H__ */