Archipelago » qemu

#ifndef QEMU_PCI_H

#define QEMU_PCI_H

#include "qemu-common.h"

#include "qdev.h"

#include "memory.h"

#include "dma.h"

/* PCI includes legacy ISA access.  */

#include "isa.h"

#include "pcie.h"

/* PCI bus */

#define PCI_DEVFN(slot, func)   ((((slot) & 0x1f) << 3) | ((func) & 0x07))

#define PCI_SLOT(devfn)         (((devfn) >> 3) & 0x1f)

#define PCI_FUNC(devfn)         ((devfn) & 0x07)

#define PCI_SLOT_MAX            32

#define PCI_FUNC_MAX            8

/* Class, Vendor and Device IDs from Linux's pci_ids.h */

#include "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

/* 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_IDE         0x1729

/* 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 FMT_PCIBUS                      PRIx64

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 int 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

#include "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 standart 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 */

#define QEMU_PCI_CAP_SERR_BITNR 4

    QEMU_PCI_CAP_SERR = (1 << QEMU_PCI_CAP_SERR_BITNR),

};

struct PCIDevice {

    DeviceState qdev;

    /* 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 */

    PCIBus *bus;

    uint32_t devfn;

    char name[64];

    PCIIORegion io_regions[PCI_NUM_REGIONS];

    /* do not access the following fields */

    PCIConfigReadFunc *config_read;

    PCIConfigWriteFunc *config_write;

    /* IRQ objects for the INTA-INTD pins.  */

    qemu_irq *irq;

    /* 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 */

    uint8_t *msix_table_page;

    /* MMIO index used to map MSIX table and pending bit entries. */

    MemoryRegion msix_mmio;

    /* Reference-count for entries actually in use by driver. */

    unsigned *msix_entry_used;

    /* Region including the MSI-X table */

    uint32_t msix_bar_size;

    /* 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;

    /* Location of option rom */

    char *romfile;

    bool has_rom;

    MemoryRegion rom;

    uint32_t rom_bar;

};

PCIDevice *pci_register_device(PCIBus *bus, const char *name,

                               int instance_size, int devfn,

                               PCIConfigReadFunc *config_read,

                               PCIConfigWriteFunc *config_write);

void pci_register_bar(PCIDevice *pci_dev, int region_num,

                      uint8_t attr, MemoryRegion *memory);

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);

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);

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 enum {

    PCI_HOTPLUG_DISABLED,

    PCI_HOTPLUG_ENABLED,

    PCI_COLDPLUG_ENABLED,

} PCIHotplugState;

typedef int (*pci_hotplug_fn)(DeviceState *qdev, PCIDevice *pci_dev,

                              PCIHotplugState state);

void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,

                         const char *name,

                         MemoryRegion *address_space_mem,

                         MemoryRegion *address_space_io,

                         uint8_t devfn_min);

PCIBus *pci_bus_new(DeviceState *parent, const char *name,

                    MemoryRegion *address_space_mem,

                    MemoryRegion *address_space_io,

                    uint8_t devfn_min);

void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,

                  void *irq_opaque, int nirq);

int pci_bus_get_irq_level(PCIBus *bus, int irq_num);

void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *dev);

PCIBus *pci_register_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);

void pci_device_reset(PCIDevice *dev);

void pci_bus_reset(PCIBus *bus);

PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model,

                        const char *default_devaddr);

PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model,

                               const char *default_devaddr);

int pci_bus_num(PCIBus *s);

void pci_for_each_device(PCIBus *bus, int bus_num, void (*fn)(PCIBus *bus, PCIDevice *d));

PCIBus *pci_find_root_bus(int domain);

int pci_find_domain(const PCIBus *bus);

PCIBus *pci_find_bus(PCIBus *bus, int bus_num);

PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn);

int pci_qdev_find_device(const char *id, PCIDevice **pdev);

PCIBus *pci_get_bus_devfn(int *devfnp, const char *devaddr);

int pci_parse_devaddr(const char *addr, int *domp, int *busp,

                      unsigned int *slotp, unsigned int *funcp);

int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp,

                     unsigned *slotp);

void pci_device_deassert_intx(PCIDevice *dev);

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)

{

    cpu_to_le16wu((uint16_t *)config, val);

}

static inline uint16_t

pci_get_word(const uint8_t *config)

{

    return le16_to_cpupu((const uint16_t *)config);

}

static inline void

pci_set_long(uint8_t *config, uint32_t val)

{

    cpu_to_le32wu((uint32_t *)config, val);

}

static inline uint32_t

pci_get_long(const uint8_t *config)

{

    return le32_to_cpupu((const uint32_t *)config);

}

static inline void

pci_set_quad(uint8_t *config, uint64_t val)

{

    cpu_to_le64w((uint64_t *)config, val);

}

static inline uint64_t

pci_get_quad(const uint8_t *config)

{

    return le64_to_cpup((const uint64_t *)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;

}

typedef int (*pci_qdev_initfn)(PCIDevice *dev);

typedef struct {

    DeviceInfo qdev;

    pci_qdev_initfn init;

    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.

     */

    int is_bridge;

    /* pcie stuff */

    int is_express;   /* is this device pci express? */

    /* device isn't hot-pluggable */

    int no_hotplug;

    /* rom bar */

    const char *romfile;

} PCIDeviceInfo;

void pci_qdev_register(PCIDeviceInfo *info);

void pci_qdev_register_many(PCIDeviceInfo *info);

PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,

                                    const char *name);

PCIDevice *pci_create_simple_multifunction(PCIBus *bus, int devfn,

                                           bool multifunction,

                                           const char *name);

PCIDevice *pci_try_create_multifunction(PCIBus *bus, int devfn,

                                        bool multifunction,

                                        const char *name);

PCIDevice *pci_create(PCIBus *bus, int devfn, const char *name);

PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name);

PCIDevice *pci_try_create(PCIBus *bus, int devfn, const char *name);

static inline int pci_is_express(const PCIDevice *d)

{

    return d->cap_present & QEMU_PCI_CAP_EXPRESS;

}

static inline uint32_t pci_config_size(const PCIDevice *d)

{

    return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE;

}

/* DMA access functions */

static inline int pci_dma_rw(PCIDevice *dev, dma_addr_t addr,

                             void *buf, dma_addr_t len, DMADirection dir)

{

    cpu_physical_memory_rw(addr, buf, len, dir == DMA_DIRECTION_FROM_DEVICE);

    return 0;

}

static inline int 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);

}

static inline int 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##_phys(addr);                                     \

    }                                                                   \

    static inline void st##_s##_pci_dma(PCIDevice *dev,                 \

                          dma_addr_t addr, uint##_bits##_t val)         \

    {                                                                   \

        st##_s##_phys(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)

{

    target_phys_addr_t len = *plen;

    void *buf;

    buf = cpu_physical_memory_map(addr, &len, dir == DMA_DIRECTION_FROM_DEVICE);

    *plen = len;

    return buf;

}

static inline void pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len,

                                 DMADirection dir, dma_addr_t access_len)

{

    cpu_physical_memory_unmap(buffer, len, dir == DMA_DIRECTION_FROM_DEVICE,

                              access_len);

}

static inline void pci_dma_sglist_init(QEMUSGList *qsg, PCIDevice *dev,

                                       int alloc_hint)

{

    qemu_sglist_init(qsg, alloc_hint);

}

#endif