hw/spapr_pci.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.h"
  27 #include "hw/pci_host.h"
  28 #include "hw/xics.h"
  29
  30 #define SPAPR_MSIX_MAX_DEVS 32
  31
  32 #define TYPE_SPAPR_PCI_HOST_BRIDGE "spapr-pci-host-bridge"
  33
  34 #define SPAPR_PCI_HOST_BRIDGE(obj) \
  35     OBJECT_CHECK(sPAPRPHBState, (obj), TYPE_SPAPR_PCI_HOST_BRIDGE)
  36
  37 typedef struct sPAPRPHBState {
  38     PCIHostState parent_obj;
  39
  40     uint64_t buid;
  41     char *busname;
  42     char *dtbusname;
  43
  44     MemoryRegion memspace, iospace;
  45     hwaddr mem_win_addr, mem_win_size, io_win_addr, io_win_size;
  46     hwaddr msi_win_addr;
  47     MemoryRegion memwindow, iowindow, msiwindow;
  48
  49     uint32_t dma_liobn;
  50     uint64_t dma_window_start;
  51     uint64_t dma_window_size;
  52     DMAContext *dma;
  53
  54     struct {
  55         uint32_t irq;
  56     } lsi_table[PCI_NUM_PINS];
  57
  58     struct {
  59         uint32_t config_addr;
  60         uint32_t irq;
  61         int nvec;
  62     } msi_table[SPAPR_MSIX_MAX_DEVS];
  63
  64     QLIST_ENTRY(sPAPRPHBState) list;
  65 } sPAPRPHBState;
  66
  67 static inline qemu_irq spapr_phb_lsi_qirq(struct sPAPRPHBState *phb, int pin)
  68 {
  69     return xics_get_qirq(spapr->icp, phb->lsi_table[pin].irq);
  70 }
  71
  72 #define SPAPR_PCI_MEM_WIN_BUS_OFFSET 0x80000000ULL
  73 #define SPAPR_PCI_IO_WIN_SIZE        0x10000
  74
  75 void spapr_create_phb(sPAPREnvironment *spapr,
  76                       const char *busname, uint64_t buid,
  77                       uint64_t mem_win_addr, uint64_t mem_win_size,
  78                       uint64_t io_win_addr, uint64_t msi_win_addr);
  79
  80 int spapr_populate_pci_dt(sPAPRPHBState *phb,
  81                           uint32_t xics_phandle,
  82                           void *fdt);
  83
  84 void spapr_pci_rtas_init(void);
  85
  86 #endif /* __HW_SPAPR_PCI_H__ */