src/add-ons/kernel/bus_managers/pci/arch/x86/pci_msi.h

   1 /*
   2  *      Copyright 2013, Jérôme Duval, korli@users.berlios.de.
   3  *      Copyright 2010, Michael Lotz, mmlr@mlotz.ch. All Rights Reserved.
   4  *      Distributed under the terms of the MIT License.
   5  */
   6 #ifndef _PCI_x86_MSI_H
   7 #define _PCI_x86_MSI_H
   8
   9 #include <OS.h>
  10 #include <SupportDefs.h>
  11
  12
  13 // Message Signaled Interrupts
  14
  15
  16 class PCIDev;
  17
  18 // MSI
  19 typedef struct msi_info {
  20         bool    msi_capable;
  21         uint8   capability_offset;
  22         uint8   message_count;
  23         uint8   configured_count;
  24         uint8   start_vector;
  25         uint16  control_value;
  26         uint16  data_value;
  27         uint64  address_value;
  28 } msi_info;
  29
  30
  31 uint8           pci_get_msi_count(uint8 virtualBus, uint8 _device, uint8 function);
  32 status_t        pci_configure_msi(uint8 virtualBus, uint8 _device, uint8 function,
  33                                 uint8 count, uint8 *startVector);
  34 status_t        pci_unconfigure_msi(uint8 virtualBus, uint8 device, uint8 function);
  35 status_t        pci_enable_msi(uint8 virtualBus, uint8 device, uint8 function);
  36 status_t        pci_disable_msi(uint8 virtualBus, uint8 device, uint8 function);
  37 void            pci_read_msi_info(PCIDev *device);
  38
  39
  40 // MSI-X
  41 typedef struct msix_info {
  42         bool    msix_capable;
  43         uint8   capability_offset;
  44         uint8   message_count;
  45         uint8   table_bar;
  46         uint32  table_offset;
  47         area_id table_area_id;
  48         addr_t  table_address;
  49         uint8   pba_bar;
  50         uint32  pba_offset;
  51         area_id pba_area_id;
  52         addr_t  pba_address;
  53         uint8   configured_count;
  54         uint8   start_vector;
  55         uint16  control_value;
  56         uint16  data_value;
  57         uint64  address_value;
  58 } msix_info;
  59
  60
  61 uint8           pci_get_msix_count(uint8 virtualBus, uint8 _device, uint8 function);
  62 status_t        pci_configure_msix(uint8 virtualBus, uint8 _device, uint8 function,
  63                                 uint8 count, uint8 *startVector);
  64 status_t        pci_enable_msix(uint8 virtualBus, uint8 _device, uint8 function);
  65 void            pci_read_msix_info(PCIDev *device);
  66
  67 // HyperTransport MSI mapping
  68 typedef struct ht_mapping_info {
  69         bool    ht_mapping_capable;
  70         uint8   capability_offset;
  71         uint16  control_value;
  72         uint64  address_value;
  73 } ht_mapping_info;
  74
  75
  76 void            pci_read_ht_mapping_info(PCIDev *device);
  77
  78
  79 #endif // _PCI_x86_MSI_H