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 20 #ifndef PCI_HOST_SPAPR_H 21 #define PCI_HOST_SPAPR_H 22 23 #include "hw/ppc/spapr.h" 24 #include "hw/pci/pci.h" 25 #include "hw/pci/pci_host.h" 26 #include "hw/ppc/xics.h" 27 28 #define TYPE_SPAPR_PCI_HOST_BRIDGE "spapr-pci-host-bridge" 29 30 #define SPAPR_PCI_HOST_BRIDGE(obj) \ 31 OBJECT_CHECK(SpaprPhbState, (obj), TYPE_SPAPR_PCI_HOST_BRIDGE) 32 33 #define SPAPR_PCI_DMA_MAX_WINDOWS 2 34 35 typedef struct SpaprPhbState SpaprPhbState; 36 37 typedef struct SpaprPciMsi { 38 uint32_t first_irq; 39 uint32_t num; 40 } SpaprPciMsi; 41 42 typedef struct SpaprPciMsiMig { 43 uint32_t key; 44 SpaprPciMsi value; 45 } SpaprPciMsiMig; 46 47 typedef struct SpaprPciLsi { 48 uint32_t irq; 49 } SpaprPciLsi; 50 51 typedef struct SpaprPhbPciNvGpuConfig SpaprPhbPciNvGpuConfig; 52 53 struct SpaprPhbState { 54 PCIHostState parent_obj; 55 56 uint32_t index; 57 uint64_t buid; 58 char *dtbusname; 59 bool dr_enabled; 60 61 MemoryRegion memspace, iospace; 62 hwaddr mem_win_addr, mem_win_size, mem64_win_addr, mem64_win_size; 63 uint64_t mem64_win_pciaddr; 64 hwaddr io_win_addr, io_win_size; 65 MemoryRegion mem32window, mem64window, iowindow, msiwindow; 66 67 uint32_t dma_liobn[SPAPR_PCI_DMA_MAX_WINDOWS]; 68 hwaddr dma_win_addr, dma_win_size; 69 AddressSpace iommu_as; 70 MemoryRegion iommu_root; 71 72 SpaprPciLsi lsi_table[PCI_NUM_PINS]; 73 74 GHashTable *msi; 75 /* Temporary cache for migration purposes */ 76 int32_t msi_devs_num; 77 SpaprPciMsiMig *msi_devs; 78 79 QLIST_ENTRY(SpaprPhbState) list; 80 81 bool ddw_enabled; 82 uint64_t page_size_mask; 83 uint64_t dma64_win_addr; 84 85 uint32_t numa_node; 86 87 bool pcie_ecs; /* Allow access to PCIe extended config space? */ 88 89 /* Fields for migration compatibility hacks */ 90 bool pre_2_8_migration; 91 uint32_t mig_liobn; 92 hwaddr mig_mem_win_addr, mig_mem_win_size; 93 hwaddr mig_io_win_addr, mig_io_win_size; 94 hwaddr nv2_gpa_win_addr; 95 hwaddr nv2_atsd_win_addr; 96 SpaprPhbPciNvGpuConfig *nvgpus; 97 }; 98 99 #define SPAPR_PCI_MEM_WIN_BUS_OFFSET 0x80000000ULL 100 #define SPAPR_PCI_MEM32_WIN_SIZE \ 101 ((1ULL << 32) - SPAPR_PCI_MEM_WIN_BUS_OFFSET) 102 #define SPAPR_PCI_MEM64_WIN_SIZE 0x10000000000ULL /* 1 TiB */ 103 104 /* All PCI outbound windows will be within this range */ 105 #define SPAPR_PCI_BASE (1ULL << 45) /* 32 TiB */ 106 #define SPAPR_PCI_LIMIT (1ULL << 46) /* 64 TiB */ 107 108 #define SPAPR_MAX_PHBS ((SPAPR_PCI_LIMIT - SPAPR_PCI_BASE) / \ 109 SPAPR_PCI_MEM64_WIN_SIZE - 1) 110 111 #define SPAPR_PCI_IO_WIN_SIZE 0x10000 112 113 #define SPAPR_PCI_MSI_WINDOW 0x40000000000ULL 114 115 #define SPAPR_PCI_NV2RAM64_WIN_BASE SPAPR_PCI_LIMIT 116 #define SPAPR_PCI_NV2RAM64_WIN_SIZE (2 * TiB) /* For up to 6 GPUs 256GB each */ 117 118 /* Max number of these GPUsper a physical box */ 119 #define NVGPU_MAX_NUM 6 120 /* Max number of NVLinks per GPU in any physical box */ 121 #define NVGPU_MAX_LINKS 3 122 123 /* 124 * GPU RAM starts at 64TiB so huge DMA window to cover it all ends at 128TiB 125 * which is enough. We do not need DMA for ATSD so we put them at 128TiB. 126 */ 127 #define SPAPR_PCI_NV2ATSD_WIN_BASE (128 * TiB) 128 #define SPAPR_PCI_NV2ATSD_WIN_SIZE (NVGPU_MAX_NUM * NVGPU_MAX_LINKS * \ 129 64 * KiB) 130 131 int spapr_dt_phb(SpaprMachineState *spapr, SpaprPhbState *phb, 132 uint32_t intc_phandle, void *fdt, int *node_offset); 133 134 void spapr_pci_rtas_init(void); 135 136 SpaprPhbState *spapr_pci_find_phb(SpaprMachineState *spapr, uint64_t buid); 137 PCIDevice *spapr_pci_find_dev(SpaprMachineState *spapr, uint64_t buid, 138 uint32_t config_addr); 139 140 /* DRC callbacks */ 141 void spapr_phb_remove_pci_device_cb(DeviceState *dev); 142 int spapr_pci_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, 143 void *fdt, int *fdt_start_offset, Error **errp); 144 145 /* VFIO EEH hooks */ 146 #ifdef CONFIG_LINUX 147 bool spapr_phb_eeh_available(SpaprPhbState *sphb); 148 int spapr_phb_vfio_eeh_set_option(SpaprPhbState *sphb, 149 unsigned int addr, int option); 150 int spapr_phb_vfio_eeh_get_state(SpaprPhbState *sphb, int *state); 151 int spapr_phb_vfio_eeh_reset(SpaprPhbState *sphb, int option); 152 int spapr_phb_vfio_eeh_configure(SpaprPhbState *sphb); 153 void spapr_phb_vfio_reset(DeviceState *qdev); 154 void spapr_phb_nvgpu_setup(SpaprPhbState *sphb, Error **errp); 155 void spapr_phb_nvgpu_free(SpaprPhbState *sphb); 156 void spapr_phb_nvgpu_populate_dt(SpaprPhbState *sphb, void *fdt, int bus_off, 157 Error **errp); 158 void spapr_phb_nvgpu_ram_populate_dt(SpaprPhbState *sphb, void *fdt); 159 void spapr_phb_nvgpu_populate_pcidev_dt(PCIDevice *dev, void *fdt, int offset, 160 SpaprPhbState *sphb); 161 #else 162 static inline bool spapr_phb_eeh_available(SpaprPhbState *sphb) 163 { 164 return false; 165 } 166 static inline int spapr_phb_vfio_eeh_set_option(SpaprPhbState *sphb, 167 unsigned int addr, int option) 168 { 169 return RTAS_OUT_HW_ERROR; 170 } 171 static inline int spapr_phb_vfio_eeh_get_state(SpaprPhbState *sphb, 172 int *state) 173 { 174 return RTAS_OUT_HW_ERROR; 175 } 176 static inline int spapr_phb_vfio_eeh_reset(SpaprPhbState *sphb, int option) 177 { 178 return RTAS_OUT_HW_ERROR; 179 } 180 static inline int spapr_phb_vfio_eeh_configure(SpaprPhbState *sphb) 181 { 182 return RTAS_OUT_HW_ERROR; 183 } 184 static inline void spapr_phb_vfio_reset(DeviceState *qdev) 185 { 186 } 187 static inline void spapr_phb_nvgpu_setup(SpaprPhbState *sphb, Error **errp) 188 { 189 } 190 static inline void spapr_phb_nvgpu_free(SpaprPhbState *sphb) 191 { 192 } 193 static inline void spapr_phb_nvgpu_populate_dt(SpaprPhbState *sphb, void *fdt, 194 int bus_off, Error **errp) 195 { 196 } 197 static inline void spapr_phb_nvgpu_ram_populate_dt(SpaprPhbState *sphb, 198 void *fdt) 199 { 200 } 201 static inline void spapr_phb_nvgpu_populate_pcidev_dt(PCIDevice *dev, void *fdt, 202 int offset, 203 SpaprPhbState *sphb) 204 { 205 } 206 #endif 207 208 void spapr_phb_dma_reset(SpaprPhbState *sphb); 209 210 static inline unsigned spapr_phb_windows_supported(SpaprPhbState *sphb) 211 { 212 return sphb->ddw_enabled ? SPAPR_PCI_DMA_MAX_WINDOWS : 1; 213 } 214 215 #endif /* PCI_HOST_SPAPR_H */ 216