include/hw/pci-host/pnv_phb3.h

   1 /*
   2  * QEMU PowerPC PowerNV (POWER8) PHB3 model
   3  *
   4  * Copyright (c) 2014-2020, IBM Corporation.
   5  *
   6  * This code is licensed under the GPL version 2 or later. See the
   7  * COPYING file in the top-level directory.
   8  */
   9
  10 #ifndef PCI_HOST_PNV_PHB3_H
  11 #define PCI_HOST_PNV_PHB3_H
  12
  13 #include "hw/ppc/xics.h"
  14 #include "qom/object.h"
  15 #include "hw/pci-host/pnv_phb.h"
  16
  17 typedef struct PnvPHB3 PnvPHB3;
  18
  19 /*
  20  * PHB3 XICS Source for MSIs
  21  */
  22 #define TYPE_PHB3_MSI "phb3-msi"
  23 typedef struct Phb3MsiState Phb3MsiState;
  24 DECLARE_INSTANCE_CHECKER(Phb3MsiState, PHB3_MSI,
  25                          TYPE_PHB3_MSI)
  26
  27 #define PHB3_MAX_MSI     2048
  28
  29 struct Phb3MsiState {
  30     ICSState ics;
  31     qemu_irq *qirqs;
  32
  33     PnvPHB3 *phb;
  34     uint64_t rba[PHB3_MAX_MSI / 64];
  35     uint32_t rba_sum;
  36 };
  37
  38 void pnv_phb3_msi_update_config(Phb3MsiState *msis, uint32_t base,
  39                                 uint32_t count);
  40 void pnv_phb3_msi_send(Phb3MsiState *msis, uint64_t addr, uint16_t data,
  41                        int32_t dev_pe);
  42 void pnv_phb3_msi_ffi(Phb3MsiState *msis, uint64_t val);
  43 void pnv_phb3_msi_pic_print_info(Phb3MsiState *msis, Monitor *mon);
  44
  45
  46 /*
  47  * We have one such address space wrapper per possible device under
  48  * the PHB since they need to be assigned statically at qemu device
  49  * creation time. The relationship to a PE is done later dynamically.
  50  * This means we can potentially create a lot of these guys. Q35
  51  * stores them as some kind of radix tree but we never really need to
  52  * do fast lookups so instead we simply keep a QLIST of them for now,
  53  * we can add the radix if needed later on.
  54  *
  55  * We do cache the PE number to speed things up a bit though.
  56  */
  57 typedef struct PnvPhb3DMASpace {
  58     PCIBus *bus;
  59     uint8_t devfn;
  60     int pe_num;         /* Cached PE number */
  61 #define PHB_INVALID_PE (-1)
  62     PnvPHB3 *phb;
  63     AddressSpace dma_as;
  64     IOMMUMemoryRegion dma_mr;
  65     MemoryRegion msi32_mr;
  66     MemoryRegion msi64_mr;
  67     QLIST_ENTRY(PnvPhb3DMASpace) list;
  68 } PnvPhb3DMASpace;
  69
  70 /*
  71  * PHB3 Power Bus Common Queue
  72  */
  73 #define TYPE_PNV_PBCQ "pnv-pbcq"
  74 OBJECT_DECLARE_SIMPLE_TYPE(PnvPBCQState, PNV_PBCQ)
  75
  76 struct PnvPBCQState {
  77     DeviceState parent;
  78
  79     uint32_t nest_xbase;
  80     uint32_t spci_xbase;
  81     uint32_t pci_xbase;
  82 #define PBCQ_NEST_REGS_COUNT    0x46
  83 #define PBCQ_PCI_REGS_COUNT     0x15
  84 #define PBCQ_SPCI_REGS_COUNT    0x5
  85
  86     uint64_t nest_regs[PBCQ_NEST_REGS_COUNT];
  87     uint64_t spci_regs[PBCQ_SPCI_REGS_COUNT];
  88     uint64_t pci_regs[PBCQ_PCI_REGS_COUNT];
  89     MemoryRegion mmbar0;
  90     MemoryRegion mmbar1;
  91     MemoryRegion phbbar;
  92     uint64_t mmio0_base;
  93     uint64_t mmio0_size;
  94     uint64_t mmio1_base;
  95     uint64_t mmio1_size;
  96     PnvPHB3 *phb;
  97
  98     MemoryRegion xscom_nest_regs;
  99     MemoryRegion xscom_pci_regs;
 100     MemoryRegion xscom_spci_regs;
 101 };
 102
 103 /*
 104  * PHB3 PCIe Root Bus
 105  */
 106 #define TYPE_PNV_PHB3_ROOT_BUS "pnv-phb3-root"
 107 struct PnvPHB3RootBus {
 108     PCIBus parent;
 109
 110     uint32_t chip_id;
 111     uint32_t phb_id;
 112 };
 113 OBJECT_DECLARE_SIMPLE_TYPE(PnvPHB3RootBus, PNV_PHB3_ROOT_BUS)
 114
 115 /*
 116  * PHB3 PCIe Host Bridge for PowerNV machines (POWER8)
 117  */
 118 #define TYPE_PNV_PHB3 "pnv-phb3"
 119 OBJECT_DECLARE_SIMPLE_TYPE(PnvPHB3, PNV_PHB3)
 120
 121 #define PNV_PHB3_NUM_M64      16
 122 #define PNV_PHB3_NUM_REGS     (0x1000 >> 3)
 123 #define PNV_PHB3_NUM_LSI      8
 124 #define PNV_PHB3_NUM_PE       256
 125
 126 #define PCI_MMIO_TOTAL_SIZE   (0x1ull << 60)
 127
 128 struct PnvPHB3 {
 129     DeviceState parent;
 130
 131     PnvPHB *phb_base;
 132
 133     uint32_t chip_id;
 134     uint32_t phb_id;
 135     char bus_path[8];
 136
 137     uint64_t regs[PNV_PHB3_NUM_REGS];
 138     MemoryRegion mr_regs;
 139
 140     MemoryRegion mr_m32;
 141     MemoryRegion mr_m64[PNV_PHB3_NUM_M64];
 142     MemoryRegion pci_mmio;
 143     MemoryRegion pci_io;
 144
 145     uint64_t ioda_LIST[8];
 146     uint64_t ioda_LXIVT[8];
 147     uint64_t ioda_TVT[512];
 148     uint64_t ioda_M64BT[16];
 149     uint64_t ioda_MDT[256];
 150     uint64_t ioda_PEEV[4];
 151
 152     uint32_t total_irq;
 153     ICSState lsis;
 154     qemu_irq *qirqs;
 155     Phb3MsiState msis;
 156
 157     PnvPBCQState pbcq;
 158
 159     QLIST_HEAD(, PnvPhb3DMASpace) dma_spaces;
 160
 161     PnvChip *chip;
 162 };
 163
 164 uint64_t pnv_phb3_reg_read(void *opaque, hwaddr off, unsigned size);
 165 void pnv_phb3_reg_write(void *opaque, hwaddr off, uint64_t val, unsigned size);
 166 void pnv_phb3_update_regions(PnvPHB3 *phb);
 167 void pnv_phb3_remap_irqs(PnvPHB3 *phb);
 168 void pnv_phb3_bus_init(DeviceState *dev, PnvPHB3 *phb);
 169
 170 #endif /* PCI_HOST_PNV_PHB3_H */