hw/device-assignment.h

   1 /*
   2  * Copyright (c) 2007, Neocleus Corporation.
   3  * Copyright (c) 2007, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  16  * Place - Suite 330, Boston, MA 02111-1307 USA.
  17  *
  18  *  Data structures for storing PCI state
  19  *
  20  *  Adapted to kvm by Qumranet
  21  *
  22  *  Copyright (c) 2007, Neocleus, Alex Novik (alex@neocleus.com)
  23  *  Copyright (c) 2007, Neocleus, Guy Zana (guy@neocleus.com)
  24  *  Copyright (C) 2008, Qumranet, Amit Shah (amit.shah@qumranet.com)
  25  *  Copyright (C) 2008, Red Hat, Amit Shah (amit.shah@redhat.com)
  26  */
  27
  28 #ifndef __DEVICE_ASSIGNMENT_H__
  29 #define __DEVICE_ASSIGNMENT_H__
  30
  31 #include <sys/mman.h>
  32 #include "qemu-common.h"
  33 #include "qemu-queue.h"
  34 #include "pci.h"
  35
  36 /* From include/linux/pci.h in the kernel sources */
  37 #define PCI_DEVFN(slot, func)   ((((slot) & 0x1f) << 3) | ((func) & 0x07))
  38
  39 typedef struct PCIHostDevice {
  40     int bus;
  41     int dev;
  42     int func;
  43 } PCIHostDevice;
  44
  45 typedef struct {
  46     int type;           /* Memory or port I/O */
  47     int valid;
  48     uint32_t base_addr;
  49     uint32_t size;    /* size of the region */
  50     int resource_fd;
  51 } PCIRegion;
  52
  53 typedef struct {
  54     uint8_t bus, dev, func; /* Bus inside domain, device and function */
  55     int irq;                /* IRQ number */
  56     uint16_t region_number; /* number of active regions */
  57
  58     /* Port I/O or MMIO Regions */
  59     PCIRegion regions[PCI_NUM_REGIONS];
  60     int config_fd;
  61 } PCIDevRegions;
  62
  63 typedef struct {
  64     target_phys_addr_t e_physbase;
  65     uint32_t memory_index;
  66     union {
  67         void *r_virtbase;    /* mmapped access address for memory regions */
  68         uint32_t r_baseport; /* the base guest port for I/O regions */
  69     } u;
  70     int num;            /* our index within v_addrs[] */
  71     uint32_t e_size;    /* emulated size of region in bytes */
  72     uint32_t r_size;    /* real size of region in bytes */
  73 } AssignedDevRegion;
  74
  75 typedef struct AssignedDevice {
  76     PCIDevice dev;
  77     PCIHostDevice host;
  78     uint32_t use_iommu;
  79     int intpin;
  80     uint8_t debug_flags;
  81     AssignedDevRegion v_addrs[PCI_NUM_REGIONS];
  82     PCIDevRegions real_device;
  83     int run;
  84     int girq;
  85     unsigned char h_busnr;
  86     unsigned int h_devfn;
  87     int irq_requested_type;
  88     int bound;
  89     struct pci_dev *pdev;
  90     struct {
  91 #define ASSIGNED_DEVICE_CAP_MSI (1 << 0)
  92 #define ASSIGNED_DEVICE_CAP_MSIX (1 << 1)
  93         uint32_t available;
  94 #define ASSIGNED_DEVICE_MSI_ENABLED (1 << 0)
  95 #define ASSIGNED_DEVICE_MSIX_ENABLED (1 << 1)
  96 #define ASSIGNED_DEVICE_MSIX_MASKED (1 << 2)
  97         uint32_t state;
  98     } cap;
  99     int irq_entries_nr;
 100     struct kvm_irq_routing_entry *entry;
 101     void *msix_table_page;
 102     target_phys_addr_t msix_table_addr;
 103     int mmio_index;
 104     int need_emulate_cmd;
 105     QLIST_ENTRY(AssignedDevice) next;
 106 } AssignedDevice;
 107
 108 QemuOpts *add_assigned_device(const char *arg);
 109 void add_assigned_devices(PCIBus *bus, const char **devices, int n_devices);
 110 void assigned_dev_update_irqs(void);
 111
 112 #define MAX_DEV_ASSIGN_CMDLINE 8
 113
 114 extern const char *assigned_devices[MAX_DEV_ASSIGN_CMDLINE];
 115 extern int assigned_devices_index;
 116
 117 #endif              /* __DEVICE_ASSIGNMENT_H__ */