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/*
* QEMU PowerPC PowerNV (POWER9) PHB4 model
*
* Copyright (c) 2018-2020, IBM Corporation.
*
* This code is licensed under the GPL version 2 or later. See the
* COPYING file in the top-level directory.
*/
#ifndef PCI_HOST_PNV_PHB4_H
#define PCI_HOST_PNV_PHB4_H
#include "hw/pci/pcie_host.h"
#include "hw/pci/pcie_port.h"
#include "hw/ppc/xive.h"
#include "qom/object.h"
typedef struct PnvPhb4PecStack PnvPhb4PecStack;
typedef struct PnvPHB4 PnvPHB4;
typedef struct PnvChip PnvChip;
/*
* We have one such address space wrapper per possible device under
* the PHB since they need to be assigned statically at qemu device
* creation time. The relationship to a PE is done later
* dynamically. This means we can potentially create a lot of these
* guys. Q35 stores them as some kind of radix tree but we never
* really need to do fast lookups so instead we simply keep a QLIST of
* them for now, we can add the radix if needed later on.
*
* We do cache the PE number to speed things up a bit though.
*/
typedef struct PnvPhb4DMASpace {
PCIBus *bus;
uint8_t devfn;
int pe_num; /* Cached PE number */
#define PHB_INVALID_PE (-1)
PnvPHB4 *phb;
AddressSpace dma_as;
IOMMUMemoryRegion dma_mr;
MemoryRegion msi32_mr;
MemoryRegion msi64_mr;
QLIST_ENTRY(PnvPhb4DMASpace) list;
} PnvPhb4DMASpace;
/*
* PHB4 PCIe Root port
*/
#define TYPE_PNV_PHB4_ROOT_BUS "pnv-phb4-root-bus"
#define TYPE_PNV_PHB4_ROOT_PORT "pnv-phb4-root-port"
typedef struct PnvPHB4RootPort {
PCIESlot parent_obj;
} PnvPHB4RootPort;
/*
* PHB4 PCIe Host Bridge for PowerNV machines (POWER9)
*/
#define TYPE_PNV_PHB4 "pnv-phb4"
OBJECT_DECLARE_SIMPLE_TYPE(PnvPHB4, PNV_PHB4)
#define PNV_PHB4_MAX_LSIs 8
#define PNV_PHB4_MAX_INTs 4096
#define PNV_PHB4_MAX_MIST (PNV_PHB4_MAX_INTs >> 2)
#define PNV_PHB4_MAX_MMIO_WINDOWS 32
#define PNV_PHB4_MIN_MMIO_WINDOWS 16
#define PNV_PHB4_NUM_REGS (0x3000 >> 3)
#define PNV_PHB4_MAX_PEs 512
#define PNV_PHB4_MAX_TVEs (PNV_PHB4_MAX_PEs * 2)
#define PNV_PHB4_MAX_PEEVs (PNV_PHB4_MAX_PEs / 64)
#define PNV_PHB4_MAX_MBEs (PNV_PHB4_MAX_MMIO_WINDOWS * 2)
#define PNV_PHB4_VERSION 0x000000a400000002ull
#define PNV_PHB4_DEVICE_ID 0x04c1
#define PCI_MMIO_TOTAL_SIZE (0x1ull << 60)
struct PnvPHB4 {
PCIExpressHost parent_obj;
PnvPHB4RootPort root;
uint32_t chip_id;
uint32_t phb_id;
uint64_t version;
char bus_path[8];
/* Main register images */
uint64_t regs[PNV_PHB4_NUM_REGS];
MemoryRegion mr_regs;
/* Extra SCOM-only register */
uint64_t scom_hv_ind_addr_reg;
/*
* Geometry of the PHB. There are two types, small and big PHBs, a
* number of resources (number of PEs, windows etc...) are doubled
* for a big PHB
*/
bool big_phb;
/* Memory regions for MMIO space */
MemoryRegion mr_mmio[PNV_PHB4_MAX_MMIO_WINDOWS];
/* PCI side space */
MemoryRegion pci_mmio;
MemoryRegion pci_io;
/* On-chip IODA tables */
uint64_t ioda_LIST[PNV_PHB4_MAX_LSIs];
uint64_t ioda_MIST[PNV_PHB4_MAX_MIST];
uint64_t ioda_TVT[PNV_PHB4_MAX_TVEs];
uint64_t ioda_MBT[PNV_PHB4_MAX_MBEs];
uint64_t ioda_MDT[PNV_PHB4_MAX_PEs];
uint64_t ioda_PEEV[PNV_PHB4_MAX_PEEVs];
/*
* The internal PESTA/B is 2 bits per PE split into two tables, we
* store them in a single array here to avoid wasting space.
*/
uint8_t ioda_PEST_AB[PNV_PHB4_MAX_PEs];
/* P9 Interrupt generation */
XiveSource xsrc;
qemu_irq *qirqs;
PnvPhb4PecStack *stack;
QLIST_HEAD(, PnvPhb4DMASpace) dma_spaces;
};
void pnv_phb4_pic_print_info(PnvPHB4 *phb, Monitor *mon);
void pnv_phb4_update_regions(PnvPhb4PecStack *stack);
extern const MemoryRegionOps pnv_phb4_xscom_ops;
/*
* PHB4 PEC (PCI Express Controller)
*/
#define TYPE_PNV_PHB4_PEC "pnv-phb4-pec"
OBJECT_DECLARE_TYPE(PnvPhb4PecState, PnvPhb4PecClass, PNV_PHB4_PEC)
#define TYPE_PNV_PHB4_PEC_STACK "pnv-phb4-pec-stack"
OBJECT_DECLARE_SIMPLE_TYPE(PnvPhb4PecStack, PNV_PHB4_PEC_STACK)
/* Per-stack data */
struct PnvPhb4PecStack {
DeviceState parent;
/* My own stack number */
uint32_t stack_no;
/* Nest registers */
#define PHB4_PEC_NEST_STK_REGS_COUNT 0x17
uint64_t nest_regs[PHB4_PEC_NEST_STK_REGS_COUNT];
MemoryRegion nest_regs_mr;
/* PCI registers (excluding pass-through) */
#define PHB4_PEC_PCI_STK_REGS_COUNT 0xf
uint64_t pci_regs[PHB4_PEC_PCI_STK_REGS_COUNT];
MemoryRegion pci_regs_mr;
/* PHB pass-through XSCOM */
MemoryRegion phb_regs_mr;
/* Memory windows from PowerBus to PHB */
MemoryRegion mmbar0;
MemoryRegion mmbar1;
MemoryRegion phbbar;
MemoryRegion intbar;
uint64_t mmio0_base;
uint64_t mmio0_size;
uint64_t mmio1_base;
uint64_t mmio1_size;
/* The owner PEC */
PnvPhb4PecState *pec;
/* The actual PHB */
PnvPHB4 phb;
};
struct PnvPhb4PecState {
DeviceState parent;
/* PEC number in chip */
uint32_t index;
uint32_t chip_id;
MemoryRegion *system_memory;
/* Nest registers, excuding per-stack */
#define PHB4_PEC_NEST_REGS_COUNT 0xf
uint64_t nest_regs[PHB4_PEC_NEST_REGS_COUNT];
MemoryRegion nest_regs_mr;
/* PCI registers, excluding per-stack */
#define PHB4_PEC_PCI_REGS_COUNT 0x2
uint64_t pci_regs[PHB4_PEC_PCI_REGS_COUNT];
MemoryRegion pci_regs_mr;
/* Stacks */
#define PHB4_PEC_MAX_STACKS 3
uint32_t num_stacks;
PnvPhb4PecStack stacks[PHB4_PEC_MAX_STACKS];
PnvChip *chip;
};
struct PnvPhb4PecClass {
DeviceClass parent_class;
uint32_t (*xscom_nest_base)(PnvPhb4PecState *pec);
uint32_t xscom_nest_size;
uint32_t (*xscom_pci_base)(PnvPhb4PecState *pec);
uint32_t xscom_pci_size;
const char *compat;
int compat_size;
const char *stk_compat;
int stk_compat_size;
uint64_t version;
const uint32_t *num_stacks;
};
#endif /* PCI_HOST_PNV_PHB4_H */
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