LXR qemu/include/hw/pci-host/spapr.h

   1/*
   2 * QEMU SPAPR PCI BUS definitions
   3 *
   4 * Copyright (c) 2011 Alexey Kardashevskiy <aik@au1.ibm.com>
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19#if !defined(__HW_SPAPR_H__)
  20#error Please include spapr.h before this file!
  21#endif
  22
  23#if !defined(__HW_SPAPR_PCI_H__)
  24#define __HW_SPAPR_PCI_H__
  25
  26#include "hw/pci/pci.h"
  27#include "hw/pci/pci_host.h"
  28#include "hw/ppc/xics.h"
  29
  30#define TYPE_SPAPR_PCI_HOST_BRIDGE "spapr-pci-host-bridge"
  31
  32#define SPAPR_PCI_HOST_BRIDGE(obj) \
  33    OBJECT_CHECK(sPAPRPHBState, (obj), TYPE_SPAPR_PCI_HOST_BRIDGE)
  34
  35typedef struct sPAPRPHBState sPAPRPHBState;
  36
  37typedef struct spapr_pci_msi {
  38    uint32_t first_irq;
  39    uint32_t num;
  40} spapr_pci_msi;
  41
  42typedef struct spapr_pci_msi_mig {
  43    uint32_t key;
  44    spapr_pci_msi value;
  45} spapr_pci_msi_mig;
  46
  47struct sPAPRPHBState {
  48    PCIHostState parent_obj;
  49
  50    uint32_t index;
  51    uint64_t buid;
  52    char *dtbusname;
  53    bool dr_enabled;
  54
  55    MemoryRegion memspace, iospace;
  56    hwaddr mem_win_addr, mem_win_size, io_win_addr, io_win_size;
  57    MemoryRegion memwindow, iowindow, msiwindow;
  58
  59    uint32_t dma_liobn;
  60    hwaddr dma_win_addr, dma_win_size;
  61    AddressSpace iommu_as;
  62    MemoryRegion iommu_root;
  63
  64    struct spapr_pci_lsi {
  65        uint32_t irq;
  66    } lsi_table[PCI_NUM_PINS];
  67
  68    GHashTable *msi;
  69    /* Temporary cache for migration purposes */
  70    int32_t msi_devs_num;
  71    spapr_pci_msi_mig *msi_devs;
  72
  73    QLIST_ENTRY(sPAPRPHBState) list;
  74};
  75
  76#define SPAPR_PCI_MAX_INDEX          255
  77
  78#define SPAPR_PCI_BASE_BUID          0x800000020000000ULL
  79
  80#define SPAPR_PCI_MEM_WIN_BUS_OFFSET 0x80000000ULL
  81
  82#define SPAPR_PCI_WINDOW_BASE        0x10000000000ULL
  83#define SPAPR_PCI_WINDOW_SPACING     0x1000000000ULL
  84#define SPAPR_PCI_MMIO_WIN_OFF       0xA0000000
  85#define SPAPR_PCI_MMIO_WIN_SIZE      (SPAPR_PCI_WINDOW_SPACING - \
  86                                     SPAPR_PCI_MEM_WIN_BUS_OFFSET)
  87#define SPAPR_PCI_IO_WIN_OFF         0x80000000
  88#define SPAPR_PCI_IO_WIN_SIZE        0x10000
  89
  90#define SPAPR_PCI_MSI_WINDOW         0x40000000000ULL
  91
  92static inline qemu_irq spapr_phb_lsi_qirq(struct sPAPRPHBState *phb, int pin)
  93{
  94    sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
  95
  96    return xics_get_qirq(spapr->icp, phb->lsi_table[pin].irq);
  97}
  98
  99PCIHostState *spapr_create_phb(sPAPRMachineState *spapr, int index);
 100
 101int spapr_populate_pci_dt(sPAPRPHBState *phb,
 102                          uint32_t xics_phandle,
 103                          void *fdt);
 104
 105void spapr_pci_msi_init(sPAPRMachineState *spapr, hwaddr addr);
 106
 107void spapr_pci_rtas_init(void);
 108
 109sPAPRPHBState *spapr_pci_find_phb(sPAPRMachineState *spapr, uint64_t buid);
 110PCIDevice *spapr_pci_find_dev(sPAPRMachineState *spapr, uint64_t buid,
 111                              uint32_t config_addr);
 112
 113/* VFIO EEH hooks */
 114#ifdef CONFIG_LINUX
 115bool spapr_phb_eeh_available(sPAPRPHBState *sphb);
 116int spapr_phb_vfio_eeh_set_option(sPAPRPHBState *sphb,
 117                                  unsigned int addr, int option);
 118int spapr_phb_vfio_eeh_get_state(sPAPRPHBState *sphb, int *state);
 119int spapr_phb_vfio_eeh_reset(sPAPRPHBState *sphb, int option);
 120int spapr_phb_vfio_eeh_configure(sPAPRPHBState *sphb);
 121void spapr_phb_vfio_reset(DeviceState *qdev);
 122#else
 123static inline bool spapr_phb_eeh_available(sPAPRPHBState *sphb)
 124{
 125    return false;
 126}
 127static inline int spapr_phb_vfio_eeh_set_option(sPAPRPHBState *sphb,
 128                                                unsigned int addr, int option)
 129{
 130    return RTAS_OUT_HW_ERROR;
 131}
 132static inline int spapr_phb_vfio_eeh_get_state(sPAPRPHBState *sphb,
 133                                               int *state)
 134{
 135    return RTAS_OUT_HW_ERROR;
 136}
 137static inline int spapr_phb_vfio_eeh_reset(sPAPRPHBState *sphb, int option)
 138{
 139    return RTAS_OUT_HW_ERROR;
 140}
 141static inline int spapr_phb_vfio_eeh_configure(sPAPRPHBState *sphb)
 142{
 143    return RTAS_OUT_HW_ERROR;
 144}
 145static inline void spapr_phb_vfio_reset(DeviceState *qdev)
 146{
 147}
 148#endif
 149
 150#endif /* __HW_SPAPR_PCI_H__ */
 151