diff options
Diffstat (limited to 'include/hw/pci/pci.h')
| -rw-r--r-- | include/hw/pci/pci.h | 914 |
1 files changed, 914 insertions, 0 deletions
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h new file mode 100644 index 000000000..e7cdf2d5e --- /dev/null +++ b/include/hw/pci/pci.h @@ -0,0 +1,914 @@ +#ifndef QEMU_PCI_H +#define QEMU_PCI_H + +#include "exec/memory.h" +#include "sysemu/dma.h" + +/* PCI includes legacy ISA access. */ +#include "hw/isa/isa.h" + +#include "hw/pci/pcie.h" +#include "qom/object.h" + +extern bool pci_available; + +/* PCI bus */ + +#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) +#define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) +#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) +#define PCI_FUNC(devfn) ((devfn) & 0x07) +#define PCI_BUILD_BDF(bus, devfn) ((bus << 8) | (devfn)) +#define PCI_BUS_MAX 256 +#define PCI_DEVFN_MAX 256 +#define PCI_SLOT_MAX 32 +#define PCI_FUNC_MAX 8 + +/* Class, Vendor and Device IDs from Linux's pci_ids.h */ +#include "hw/pci/pci_ids.h" + +/* QEMU-specific Vendor and Device ID definitions */ + +/* IBM (0x1014) */ +#define PCI_DEVICE_ID_IBM_440GX 0x027f +#define PCI_DEVICE_ID_IBM_OPENPIC2 0xffff + +/* Hitachi (0x1054) */ +#define PCI_VENDOR_ID_HITACHI 0x1054 +#define PCI_DEVICE_ID_HITACHI_SH7751R 0x350e + +/* Apple (0x106b) */ +#define PCI_DEVICE_ID_APPLE_343S1201 0x0010 +#define PCI_DEVICE_ID_APPLE_UNI_N_I_PCI 0x001e +#define PCI_DEVICE_ID_APPLE_UNI_N_PCI 0x001f +#define PCI_DEVICE_ID_APPLE_UNI_N_KEYL 0x0022 +#define PCI_DEVICE_ID_APPLE_IPID_USB 0x003f + +/* Realtek (0x10ec) */ +#define PCI_DEVICE_ID_REALTEK_8029 0x8029 + +/* Xilinx (0x10ee) */ +#define PCI_DEVICE_ID_XILINX_XC2VP30 0x0300 + +/* Marvell (0x11ab) */ +#define PCI_DEVICE_ID_MARVELL_GT6412X 0x4620 + +/* QEMU/Bochs VGA (0x1234) */ +#define PCI_VENDOR_ID_QEMU 0x1234 +#define PCI_DEVICE_ID_QEMU_VGA 0x1111 +#define PCI_DEVICE_ID_QEMU_IPMI 0x1112 + +/* VMWare (0x15ad) */ +#define PCI_VENDOR_ID_VMWARE 0x15ad +#define PCI_DEVICE_ID_VMWARE_SVGA2 0x0405 +#define PCI_DEVICE_ID_VMWARE_SVGA 0x0710 +#define PCI_DEVICE_ID_VMWARE_NET 0x0720 +#define PCI_DEVICE_ID_VMWARE_SCSI 0x0730 +#define PCI_DEVICE_ID_VMWARE_PVSCSI 0x07C0 +#define PCI_DEVICE_ID_VMWARE_IDE 0x1729 +#define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0 + +/* Intel (0x8086) */ +#define PCI_DEVICE_ID_INTEL_82551IT 0x1209 +#define PCI_DEVICE_ID_INTEL_82557 0x1229 +#define PCI_DEVICE_ID_INTEL_82801IR 0x2922 + +/* Red Hat / Qumranet (for QEMU) -- see pci-ids.txt */ +#define PCI_VENDOR_ID_REDHAT_QUMRANET 0x1af4 +#define PCI_SUBVENDOR_ID_REDHAT_QUMRANET 0x1af4 +#define PCI_SUBDEVICE_ID_QEMU 0x1100 + +#define PCI_DEVICE_ID_VIRTIO_NET 0x1000 +#define PCI_DEVICE_ID_VIRTIO_BLOCK 0x1001 +#define PCI_DEVICE_ID_VIRTIO_BALLOON 0x1002 +#define PCI_DEVICE_ID_VIRTIO_CONSOLE 0x1003 +#define PCI_DEVICE_ID_VIRTIO_SCSI 0x1004 +#define PCI_DEVICE_ID_VIRTIO_RNG 0x1005 +#define PCI_DEVICE_ID_VIRTIO_9P 0x1009 +#define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012 +#define PCI_DEVICE_ID_VIRTIO_PMEM 0x1013 +#define PCI_DEVICE_ID_VIRTIO_IOMMU 0x1014 +#define PCI_DEVICE_ID_VIRTIO_MEM 0x1015 + +#define PCI_VENDOR_ID_REDHAT 0x1b36 +#define PCI_DEVICE_ID_REDHAT_BRIDGE 0x0001 +#define PCI_DEVICE_ID_REDHAT_SERIAL 0x0002 +#define PCI_DEVICE_ID_REDHAT_SERIAL2 0x0003 +#define PCI_DEVICE_ID_REDHAT_SERIAL4 0x0004 +#define PCI_DEVICE_ID_REDHAT_TEST 0x0005 +#define PCI_DEVICE_ID_REDHAT_ROCKER 0x0006 +#define PCI_DEVICE_ID_REDHAT_SDHCI 0x0007 +#define PCI_DEVICE_ID_REDHAT_PCIE_HOST 0x0008 +#define PCI_DEVICE_ID_REDHAT_PXB 0x0009 +#define PCI_DEVICE_ID_REDHAT_BRIDGE_SEAT 0x000a +#define PCI_DEVICE_ID_REDHAT_PXB_PCIE 0x000b +#define PCI_DEVICE_ID_REDHAT_PCIE_RP 0x000c +#define PCI_DEVICE_ID_REDHAT_XHCI 0x000d +#define PCI_DEVICE_ID_REDHAT_PCIE_BRIDGE 0x000e +#define PCI_DEVICE_ID_REDHAT_MDPY 0x000f +#define PCI_DEVICE_ID_REDHAT_NVME 0x0010 +#define PCI_DEVICE_ID_REDHAT_PVPANIC 0x0011 +#define PCI_DEVICE_ID_REDHAT_QXL 0x0100 + +#define FMT_PCIBUS PRIx64 + +typedef uint64_t pcibus_t; + +struct PCIHostDeviceAddress { + unsigned int domain; + unsigned int bus; + unsigned int slot; + unsigned int function; +}; + +typedef void PCIConfigWriteFunc(PCIDevice *pci_dev, + uint32_t address, uint32_t data, int len); +typedef uint32_t PCIConfigReadFunc(PCIDevice *pci_dev, + uint32_t address, int len); +typedef void PCIMapIORegionFunc(PCIDevice *pci_dev, int region_num, + pcibus_t addr, pcibus_t size, int type); +typedef void PCIUnregisterFunc(PCIDevice *pci_dev); + +typedef struct PCIIORegion { + pcibus_t addr; /* current PCI mapping address. -1 means not mapped */ +#define PCI_BAR_UNMAPPED (~(pcibus_t)0) + pcibus_t size; + uint8_t type; + MemoryRegion *memory; + MemoryRegion *address_space; +} PCIIORegion; + +#define PCI_ROM_SLOT 6 +#define PCI_NUM_REGIONS 7 + +enum { + QEMU_PCI_VGA_MEM, + QEMU_PCI_VGA_IO_LO, + QEMU_PCI_VGA_IO_HI, + QEMU_PCI_VGA_NUM_REGIONS, +}; + +#define QEMU_PCI_VGA_MEM_BASE 0xa0000 +#define QEMU_PCI_VGA_MEM_SIZE 0x20000 +#define QEMU_PCI_VGA_IO_LO_BASE 0x3b0 +#define QEMU_PCI_VGA_IO_LO_SIZE 0xc +#define QEMU_PCI_VGA_IO_HI_BASE 0x3c0 +#define QEMU_PCI_VGA_IO_HI_SIZE 0x20 + +#include "hw/pci/pci_regs.h" + +/* PCI HEADER_TYPE */ +#define PCI_HEADER_TYPE_MULTI_FUNCTION 0x80 + +/* Size of the standard PCI config header */ +#define PCI_CONFIG_HEADER_SIZE 0x40 +/* Size of the standard PCI config space */ +#define PCI_CONFIG_SPACE_SIZE 0x100 +/* Size of the standard PCIe config space: 4KB */ +#define PCIE_CONFIG_SPACE_SIZE 0x1000 + +#define PCI_NUM_PINS 4 /* A-D */ + +/* Bits in cap_present field. */ +enum { + QEMU_PCI_CAP_MSI = 0x1, + QEMU_PCI_CAP_MSIX = 0x2, + QEMU_PCI_CAP_EXPRESS = 0x4, + + /* multifunction capable device */ +#define QEMU_PCI_CAP_MULTIFUNCTION_BITNR 3 + QEMU_PCI_CAP_MULTIFUNCTION = (1 << QEMU_PCI_CAP_MULTIFUNCTION_BITNR), + + /* command register SERR bit enabled - unused since QEMU v5.0 */ +#define QEMU_PCI_CAP_SERR_BITNR 4 + QEMU_PCI_CAP_SERR = (1 << QEMU_PCI_CAP_SERR_BITNR), + /* Standard hot plug controller. */ +#define QEMU_PCI_SHPC_BITNR 5 + QEMU_PCI_CAP_SHPC = (1 << QEMU_PCI_SHPC_BITNR), +#define QEMU_PCI_SLOTID_BITNR 6 + QEMU_PCI_CAP_SLOTID = (1 << QEMU_PCI_SLOTID_BITNR), + /* PCI Express capability - Power Controller Present */ +#define QEMU_PCIE_SLTCAP_PCP_BITNR 7 + QEMU_PCIE_SLTCAP_PCP = (1 << QEMU_PCIE_SLTCAP_PCP_BITNR), + /* Link active status in endpoint capability is always set */ +#define QEMU_PCIE_LNKSTA_DLLLA_BITNR 8 + QEMU_PCIE_LNKSTA_DLLLA = (1 << QEMU_PCIE_LNKSTA_DLLLA_BITNR), +#define QEMU_PCIE_EXTCAP_INIT_BITNR 9 + QEMU_PCIE_EXTCAP_INIT = (1 << QEMU_PCIE_EXTCAP_INIT_BITNR), +}; + +#define TYPE_PCI_DEVICE "pci-device" +typedef struct PCIDeviceClass PCIDeviceClass; +DECLARE_OBJ_CHECKERS(PCIDevice, PCIDeviceClass, + PCI_DEVICE, TYPE_PCI_DEVICE) + +/* Implemented by devices that can be plugged on PCI Express buses */ +#define INTERFACE_PCIE_DEVICE "pci-express-device" + +/* Implemented by devices that can be plugged on Conventional PCI buses */ +#define INTERFACE_CONVENTIONAL_PCI_DEVICE "conventional-pci-device" + +typedef struct PCIINTxRoute { + enum { + PCI_INTX_ENABLED, + PCI_INTX_INVERTED, + PCI_INTX_DISABLED, + } mode; + int irq; +} PCIINTxRoute; + +struct PCIDeviceClass { + DeviceClass parent_class; + + void (*realize)(PCIDevice *dev, Error **errp); + PCIUnregisterFunc *exit; + PCIConfigReadFunc *config_read; + PCIConfigWriteFunc *config_write; + + uint16_t vendor_id; + uint16_t device_id; + uint8_t revision; + uint16_t class_id; + uint16_t subsystem_vendor_id; /* only for header type = 0 */ + uint16_t subsystem_id; /* only for header type = 0 */ + + /* + * pci-to-pci bridge or normal device. + * This doesn't mean pci host switch. + * When card bus bridge is supported, this would be enhanced. + */ + bool is_bridge; + + /* rom bar */ + const char *romfile; +}; + +typedef void (*PCIINTxRoutingNotifier)(PCIDevice *dev); +typedef int (*MSIVectorUseNotifier)(PCIDevice *dev, unsigned int vector, + MSIMessage msg); +typedef void (*MSIVectorReleaseNotifier)(PCIDevice *dev, unsigned int vector); +typedef void (*MSIVectorPollNotifier)(PCIDevice *dev, + unsigned int vector_start, + unsigned int vector_end); + +enum PCIReqIDType { + PCI_REQ_ID_INVALID = 0, + PCI_REQ_ID_BDF, + PCI_REQ_ID_SECONDARY_BUS, + PCI_REQ_ID_MAX, +}; +typedef enum PCIReqIDType PCIReqIDType; + +struct PCIReqIDCache { + PCIDevice *dev; + PCIReqIDType type; +}; +typedef struct PCIReqIDCache PCIReqIDCache; + +struct PCIDevice { + DeviceState qdev; + bool partially_hotplugged; + bool has_power; + + /* PCI config space */ + uint8_t *config; + + /* Used to enable config checks on load. Note that writable bits are + * never checked even if set in cmask. */ + uint8_t *cmask; + + /* Used to implement R/W bytes */ + uint8_t *wmask; + + /* Used to implement RW1C(Write 1 to Clear) bytes */ + uint8_t *w1cmask; + + /* Used to allocate config space for capabilities. */ + uint8_t *used; + + /* the following fields are read only */ + int32_t devfn; + /* Cached device to fetch requester ID from, to avoid the PCI + * tree walking every time we invoke PCI request (e.g., + * MSI). For conventional PCI root complex, this field is + * meaningless. */ + PCIReqIDCache requester_id_cache; + char name[64]; + PCIIORegion io_regions[PCI_NUM_REGIONS]; + AddressSpace bus_master_as; + MemoryRegion bus_master_container_region; + MemoryRegion bus_master_enable_region; + + /* do not access the following fields */ + PCIConfigReadFunc *config_read; + PCIConfigWriteFunc *config_write; + + /* Legacy PCI VGA regions */ + MemoryRegion *vga_regions[QEMU_PCI_VGA_NUM_REGIONS]; + bool has_vga; + + /* Current IRQ levels. Used internally by the generic PCI code. */ + uint8_t irq_state; + + /* Capability bits */ + uint32_t cap_present; + + /* Offset of MSI-X capability in config space */ + uint8_t msix_cap; + + /* MSI-X entries */ + int msix_entries_nr; + + /* Space to store MSIX table & pending bit array */ + uint8_t *msix_table; + uint8_t *msix_pba; + /* MemoryRegion container for msix exclusive BAR setup */ + MemoryRegion msix_exclusive_bar; + /* Memory Regions for MSIX table and pending bit entries. */ + MemoryRegion msix_table_mmio; + MemoryRegion msix_pba_mmio; + /* Reference-count for entries actually in use by driver. */ + unsigned *msix_entry_used; + /* MSIX function mask set or MSIX disabled */ + bool msix_function_masked; + /* Version id needed for VMState */ + int32_t version_id; + + /* Offset of MSI capability in config space */ + uint8_t msi_cap; + + /* PCI Express */ + PCIExpressDevice exp; + + /* SHPC */ + SHPCDevice *shpc; + + /* Location of option rom */ + char *romfile; + uint32_t romsize; + bool has_rom; + MemoryRegion rom; + uint32_t rom_bar; + + /* INTx routing notifier */ + PCIINTxRoutingNotifier intx_routing_notifier; + + /* MSI-X notifiers */ + MSIVectorUseNotifier msix_vector_use_notifier; + MSIVectorReleaseNotifier msix_vector_release_notifier; + MSIVectorPollNotifier msix_vector_poll_notifier; + + /* ID of standby device in net_failover pair */ + char *failover_pair_id; + uint32_t acpi_index; +}; + +void pci_register_bar(PCIDevice *pci_dev, int region_num, + uint8_t attr, MemoryRegion *memory); +void pci_register_vga(PCIDevice *pci_dev, MemoryRegion *mem, + MemoryRegion *io_lo, MemoryRegion *io_hi); +void pci_unregister_vga(PCIDevice *pci_dev); +pcibus_t pci_get_bar_addr(PCIDevice *pci_dev, int region_num); + +int pci_add_capability(PCIDevice *pdev, uint8_t cap_id, + uint8_t offset, uint8_t size, + Error **errp); + +void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size); + +uint8_t pci_find_capability(PCIDevice *pci_dev, uint8_t cap_id); + + +uint32_t pci_default_read_config(PCIDevice *d, + uint32_t address, int len); +void pci_default_write_config(PCIDevice *d, + uint32_t address, uint32_t val, int len); +void pci_device_save(PCIDevice *s, QEMUFile *f); +int pci_device_load(PCIDevice *s, QEMUFile *f); +MemoryRegion *pci_address_space(PCIDevice *dev); +MemoryRegion *pci_address_space_io(PCIDevice *dev); + +/* + * Should not normally be used by devices. For use by sPAPR target + * where QEMU emulates firmware. + */ +int pci_bar(PCIDevice *d, int reg); + +typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level); +typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num); +typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin); + +#define TYPE_PCI_BUS "PCI" +OBJECT_DECLARE_TYPE(PCIBus, PCIBusClass, PCI_BUS) +#define TYPE_PCIE_BUS "PCIE" + +typedef void (*pci_bus_dev_fn)(PCIBus *b, PCIDevice *d, void *opaque); +typedef void (*pci_bus_fn)(PCIBus *b, void *opaque); +typedef void *(*pci_bus_ret_fn)(PCIBus *b, void *opaque); + +bool pci_bus_is_express(PCIBus *bus); + +void pci_root_bus_init(PCIBus *bus, size_t bus_size, DeviceState *parent, + const char *name, + MemoryRegion *address_space_mem, + MemoryRegion *address_space_io, + uint8_t devfn_min, const char *typename); +PCIBus *pci_root_bus_new(DeviceState *parent, const char *name, + MemoryRegion *address_space_mem, + MemoryRegion *address_space_io, + uint8_t devfn_min, const char *typename); +void pci_root_bus_cleanup(PCIBus *bus); +void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, + void *irq_opaque, int nirq); +void pci_bus_irqs_cleanup(PCIBus *bus); +int pci_bus_get_irq_level(PCIBus *bus, int irq_num); +/* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ +static inline int pci_swizzle(int slot, int pin) +{ + return (slot + pin) % PCI_NUM_PINS; +} +int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin); +PCIBus *pci_register_root_bus(DeviceState *parent, const char *name, + pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, + void *irq_opaque, + MemoryRegion *address_space_mem, + MemoryRegion *address_space_io, + uint8_t devfn_min, int nirq, + const char *typename); +void pci_unregister_root_bus(PCIBus *bus); +void pci_bus_set_route_irq_fn(PCIBus *, pci_route_irq_fn); +PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin); +bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new); +void pci_bus_fire_intx_routing_notifier(PCIBus *bus); +void pci_device_set_intx_routing_notifier(PCIDevice *dev, + PCIINTxRoutingNotifier notifier); +void pci_device_reset(PCIDevice *dev); + +PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus, + const char *default_model, + const char *default_devaddr); + +PCIDevice *pci_vga_init(PCIBus *bus); + +static inline PCIBus *pci_get_bus(const PCIDevice *dev) +{ + return PCI_BUS(qdev_get_parent_bus(DEVICE(dev))); +} +int pci_bus_num(PCIBus *s); +void pci_bus_range(PCIBus *bus, int *min_bus, int *max_bus); +static inline int pci_dev_bus_num(const PCIDevice *dev) +{ + return pci_bus_num(pci_get_bus(dev)); +} + +int pci_bus_numa_node(PCIBus *bus); +void pci_for_each_device(PCIBus *bus, int bus_num, + pci_bus_dev_fn fn, + void *opaque); +void pci_for_each_device_reverse(PCIBus *bus, int bus_num, + pci_bus_dev_fn fn, + void *opaque); +void pci_for_each_device_under_bus(PCIBus *bus, + pci_bus_dev_fn fn, void *opaque); +void pci_for_each_device_under_bus_reverse(PCIBus *bus, + pci_bus_dev_fn fn, + void *opaque); +void pci_for_each_bus_depth_first(PCIBus *bus, pci_bus_ret_fn begin, + pci_bus_fn end, void *parent_state); +PCIDevice *pci_get_function_0(PCIDevice *pci_dev); + +/* Use this wrapper when specific scan order is not required. */ +static inline +void pci_for_each_bus(PCIBus *bus, pci_bus_fn fn, void *opaque) +{ + pci_for_each_bus_depth_first(bus, NULL, fn, opaque); +} + +PCIBus *pci_device_root_bus(const PCIDevice *d); +const char *pci_root_bus_path(PCIDevice *dev); +bool pci_bus_bypass_iommu(PCIBus *bus); +PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn); +int pci_qdev_find_device(const char *id, PCIDevice **pdev); +void pci_bus_get_w64_range(PCIBus *bus, Range *range); + +void pci_device_deassert_intx(PCIDevice *dev); + +typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int); + +AddressSpace *pci_device_iommu_address_space(PCIDevice *dev); +void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque); + +static inline void +pci_set_byte(uint8_t *config, uint8_t val) +{ + *config = val; +} + +static inline uint8_t +pci_get_byte(const uint8_t *config) +{ + return *config; +} + +static inline void +pci_set_word(uint8_t *config, uint16_t val) +{ + stw_le_p(config, val); +} + +static inline uint16_t +pci_get_word(const uint8_t *config) +{ + return lduw_le_p(config); +} + +static inline void +pci_set_long(uint8_t *config, uint32_t val) +{ + stl_le_p(config, val); +} + +static inline uint32_t +pci_get_long(const uint8_t *config) +{ + return ldl_le_p(config); +} + +/* + * PCI capabilities and/or their fields + * are generally DWORD aligned only so + * mechanism used by pci_set/get_quad() + * must be tolerant to unaligned pointers + * + */ +static inline void +pci_set_quad(uint8_t *config, uint64_t val) +{ + stq_le_p(config, val); +} + +static inline uint64_t +pci_get_quad(const uint8_t *config) +{ + return ldq_le_p(config); +} + +static inline void +pci_config_set_vendor_id(uint8_t *pci_config, uint16_t val) +{ + pci_set_word(&pci_config[PCI_VENDOR_ID], val); +} + +static inline void +pci_config_set_device_id(uint8_t *pci_config, uint16_t val) +{ + pci_set_word(&pci_config[PCI_DEVICE_ID], val); +} + +static inline void +pci_config_set_revision(uint8_t *pci_config, uint8_t val) +{ + pci_set_byte(&pci_config[PCI_REVISION_ID], val); +} + +static inline void +pci_config_set_class(uint8_t *pci_config, uint16_t val) +{ + pci_set_word(&pci_config[PCI_CLASS_DEVICE], val); +} + +static inline void +pci_config_set_prog_interface(uint8_t *pci_config, uint8_t val) +{ + pci_set_byte(&pci_config[PCI_CLASS_PROG], val); +} + +static inline void +pci_config_set_interrupt_pin(uint8_t *pci_config, uint8_t val) +{ + pci_set_byte(&pci_config[PCI_INTERRUPT_PIN], val); +} + +/* + * helper functions to do bit mask operation on configuration space. + * Just to set bit, use test-and-set and discard returned value. + * Just to clear bit, use test-and-clear and discard returned value. + * NOTE: They aren't atomic. + */ +static inline uint8_t +pci_byte_test_and_clear_mask(uint8_t *config, uint8_t mask) +{ + uint8_t val = pci_get_byte(config); + pci_set_byte(config, val & ~mask); + return val & mask; +} + +static inline uint8_t +pci_byte_test_and_set_mask(uint8_t *config, uint8_t mask) +{ + uint8_t val = pci_get_byte(config); + pci_set_byte(config, val | mask); + return val & mask; +} + +static inline uint16_t +pci_word_test_and_clear_mask(uint8_t *config, uint16_t mask) +{ + uint16_t val = pci_get_word(config); + pci_set_word(config, val & ~mask); + return val & mask; +} + +static inline uint16_t +pci_word_test_and_set_mask(uint8_t *config, uint16_t mask) +{ + uint16_t val = pci_get_word(config); + pci_set_word(config, val | mask); + return val & mask; +} + +static inline uint32_t +pci_long_test_and_clear_mask(uint8_t *config, uint32_t mask) +{ + uint32_t val = pci_get_long(config); + pci_set_long(config, val & ~mask); + return val & mask; +} + +static inline uint32_t +pci_long_test_and_set_mask(uint8_t *config, uint32_t mask) +{ + uint32_t val = pci_get_long(config); + pci_set_long(config, val | mask); + return val & mask; +} + +static inline uint64_t +pci_quad_test_and_clear_mask(uint8_t *config, uint64_t mask) +{ + uint64_t val = pci_get_quad(config); + pci_set_quad(config, val & ~mask); + return val & mask; +} + +static inline uint64_t +pci_quad_test_and_set_mask(uint8_t *config, uint64_t mask) +{ + uint64_t val = pci_get_quad(config); + pci_set_quad(config, val | mask); + return val & mask; +} + +/* Access a register specified by a mask */ +static inline void +pci_set_byte_by_mask(uint8_t *config, uint8_t mask, uint8_t reg) +{ + uint8_t val = pci_get_byte(config); + uint8_t rval = reg << ctz32(mask); + pci_set_byte(config, (~mask & val) | (mask & rval)); +} + +static inline uint8_t +pci_get_byte_by_mask(uint8_t *config, uint8_t mask) +{ + uint8_t val = pci_get_byte(config); + return (val & mask) >> ctz32(mask); +} + +static inline void +pci_set_word_by_mask(uint8_t *config, uint16_t mask, uint16_t reg) +{ + uint16_t val = pci_get_word(config); + uint16_t rval = reg << ctz32(mask); + pci_set_word(config, (~mask & val) | (mask & rval)); +} + +static inline uint16_t +pci_get_word_by_mask(uint8_t *config, uint16_t mask) +{ + uint16_t val = pci_get_word(config); + return (val & mask) >> ctz32(mask); +} + +static inline void +pci_set_long_by_mask(uint8_t *config, uint32_t mask, uint32_t reg) +{ + uint32_t val = pci_get_long(config); + uint32_t rval = reg << ctz32(mask); + pci_set_long(config, (~mask & val) | (mask & rval)); +} + +static inline uint32_t +pci_get_long_by_mask(uint8_t *config, uint32_t mask) +{ + uint32_t val = pci_get_long(config); + return (val & mask) >> ctz32(mask); +} + +static inline void +pci_set_quad_by_mask(uint8_t *config, uint64_t mask, uint64_t reg) +{ + uint64_t val = pci_get_quad(config); + uint64_t rval = reg << ctz32(mask); + pci_set_quad(config, (~mask & val) | (mask & rval)); +} + +static inline uint64_t +pci_get_quad_by_mask(uint8_t *config, uint64_t mask) +{ + uint64_t val = pci_get_quad(config); + return (val & mask) >> ctz32(mask); +} + +PCIDevice *pci_new_multifunction(int devfn, bool multifunction, + const char *name); +PCIDevice *pci_new(int devfn, const char *name); +bool pci_realize_and_unref(PCIDevice *dev, PCIBus *bus, Error **errp); + +PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn, + bool multifunction, + const char *name); +PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name); + +void lsi53c8xx_handle_legacy_cmdline(DeviceState *lsi_dev); + +qemu_irq pci_allocate_irq(PCIDevice *pci_dev); +void pci_set_irq(PCIDevice *pci_dev, int level); + +static inline void pci_irq_assert(PCIDevice *pci_dev) +{ + pci_set_irq(pci_dev, 1); +} + +static inline void pci_irq_deassert(PCIDevice *pci_dev) +{ + pci_set_irq(pci_dev, 0); +} + +/* + * FIXME: PCI does not work this way. + * All the callers to this method should be fixed. + */ +static inline void pci_irq_pulse(PCIDevice *pci_dev) +{ + pci_irq_assert(pci_dev); + pci_irq_deassert(pci_dev); +} + +static inline int pci_is_express(const PCIDevice *d) +{ + return d->cap_present & QEMU_PCI_CAP_EXPRESS; +} + +static inline int pci_is_express_downstream_port(const PCIDevice *d) +{ + uint8_t type; + + if (!pci_is_express(d) || !d->exp.exp_cap) { + return 0; + } + + type = pcie_cap_get_type(d); + + return type == PCI_EXP_TYPE_DOWNSTREAM || type == PCI_EXP_TYPE_ROOT_PORT; +} + +static inline uint32_t pci_config_size(const PCIDevice *d) +{ + return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE; +} + +static inline uint16_t pci_get_bdf(PCIDevice *dev) +{ + return PCI_BUILD_BDF(pci_bus_num(pci_get_bus(dev)), dev->devfn); +} + +uint16_t pci_requester_id(PCIDevice *dev); + +/* DMA access functions */ +static inline AddressSpace *pci_get_address_space(PCIDevice *dev) +{ + return &dev->bus_master_as; +} + +/** + * pci_dma_rw: Read from or write to an address space from PCI device. + * + * Return a MemTxResult indicating whether the operation succeeded + * or failed (eg unassigned memory, device rejected the transaction, + * IOMMU fault). + * + * @dev: #PCIDevice doing the memory access + * @addr: address within the #PCIDevice address space + * @buf: buffer with the data transferred + * @len: the number of bytes to read or write + * @dir: indicates the transfer direction + */ +static inline MemTxResult pci_dma_rw(PCIDevice *dev, dma_addr_t addr, + void *buf, dma_addr_t len, + DMADirection dir) +{ + return dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir); +} + +/** + * pci_dma_read: Read from an address space from PCI device. + * + * Return a MemTxResult indicating whether the operation succeeded + * or failed (eg unassigned memory, device rejected the transaction, + * IOMMU fault). Called within RCU critical section. + * + * @dev: #PCIDevice doing the memory access + * @addr: address within the #PCIDevice address space + * @buf: buffer with the data transferred + * @len: length of the data transferred + */ +static inline MemTxResult pci_dma_read(PCIDevice *dev, dma_addr_t addr, + void *buf, dma_addr_t len) +{ + return pci_dma_rw(dev, addr, buf, len, DMA_DIRECTION_TO_DEVICE); +} + +/** + * pci_dma_write: Write to address space from PCI device. + * + * Return a MemTxResult indicating whether the operation succeeded + * or failed (eg unassigned memory, device rejected the transaction, + * IOMMU fault). + * + * @dev: #PCIDevice doing the memory access + * @addr: address within the #PCIDevice address space + * @buf: buffer with the data transferred + * @len: the number of bytes to write + */ +static inline MemTxResult pci_dma_write(PCIDevice *dev, dma_addr_t addr, + const void *buf, dma_addr_t len) +{ + return pci_dma_rw(dev, addr, (void *) buf, len, DMA_DIRECTION_FROM_DEVICE); +} + +#define PCI_DMA_DEFINE_LDST(_l, _s, _bits) \ + static inline uint##_bits##_t ld##_l##_pci_dma(PCIDevice *dev, \ + dma_addr_t addr) \ + { \ + return ld##_l##_dma(pci_get_address_space(dev), addr); \ + } \ + static inline void st##_s##_pci_dma(PCIDevice *dev, \ + dma_addr_t addr, uint##_bits##_t val) \ + { \ + st##_s##_dma(pci_get_address_space(dev), addr, val); \ + } + +PCI_DMA_DEFINE_LDST(ub, b, 8); +PCI_DMA_DEFINE_LDST(uw_le, w_le, 16) +PCI_DMA_DEFINE_LDST(l_le, l_le, 32); +PCI_DMA_DEFINE_LDST(q_le, q_le, 64); +PCI_DMA_DEFINE_LDST(uw_be, w_be, 16) +PCI_DMA_DEFINE_LDST(l_be, l_be, 32); +PCI_DMA_DEFINE_LDST(q_be, q_be, 64); + +#undef PCI_DMA_DEFINE_LDST + +static inline void *pci_dma_map(PCIDevice *dev, dma_addr_t addr, + dma_addr_t *plen, DMADirection dir) +{ + void *buf; + + buf = dma_memory_map(pci_get_address_space(dev), addr, plen, dir); + return buf; +} + +static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len, + DMADirection dir, dma_addr_t access_len) +{ + dma_memory_unmap(pci_get_address_space(dev), buffer, len, dir, access_len); +} + +static inline void pci_dma_sglist_init(QEMUSGList *qsg, PCIDevice *dev, + int alloc_hint) +{ + qemu_sglist_init(qsg, DEVICE(dev), alloc_hint, pci_get_address_space(dev)); +} + +extern const VMStateDescription vmstate_pci_device; + +#define VMSTATE_PCI_DEVICE(_field, _state) { \ + .name = (stringify(_field)), \ + .size = sizeof(PCIDevice), \ + .vmsd = &vmstate_pci_device, \ + .flags = VMS_STRUCT, \ + .offset = vmstate_offset_value(_state, _field, PCIDevice), \ +} + +#define VMSTATE_PCI_DEVICE_POINTER(_field, _state) { \ + .name = (stringify(_field)), \ + .size = sizeof(PCIDevice), \ + .vmsd = &vmstate_pci_device, \ + .flags = VMS_STRUCT|VMS_POINTER, \ + .offset = vmstate_offset_pointer(_state, _field, PCIDevice), \ +} + +MSIMessage pci_get_msi_message(PCIDevice *dev, int vector); +void pci_set_power(PCIDevice *pci_dev, bool state); + +#endif |