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qemu/hw/pci.h
Gerd Hoffmann 81a322d4a1 qdev: add return value to init() callbacks. 
Sorry folks, but it has to be.  One more of these invasive qdev patches.

We have a serious design bug in the qdev interface:  device init
callbacks can't signal failure because the init() callback has no
return value.  This patch fixes it.

We have already one case in-tree where this is needed:
Try -device virtio-blk-pci (without drive= specified) and watch qemu
segfault.  This patch fixes it.

With usb+scsi being converted to qdev we'll get more devices where the
init callback can fail for various reasons.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:43:28 -05:00

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#ifndef QEMU_PCI_H
#define QEMU_PCI_H
#include "qemu-common.h"
#include "qdev.h"
/* PCI includes legacy ISA access. */
#include "isa.h"
/* PCI bus */
extern target_phys_addr_t pci_mem_base;
#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
#define PCI_FUNC(devfn) ((devfn) & 0x07)
/* 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
/* 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
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,
uint32_t addr, uint32_t size, int type);
typedef int PCIUnregisterFunc(PCIDevice *pci_dev);
#define PCI_ADDRESS_SPACE_MEM 0x00
#define PCI_ADDRESS_SPACE_IO 0x01
#define PCI_ADDRESS_SPACE_MEM_PREFETCH 0x08
typedef struct PCIIORegion {
uint32_t addr; /* current PCI mapping address. -1 means not mapped */
uint32_t size;
uint8_t type;
PCIMapIORegionFunc *map_func;
} PCIIORegion;
#define PCI_ROM_SLOT 6
#define PCI_NUM_REGIONS 7
/* Declarations from linux/pci_regs.h */
#define PCI_VENDOR_ID 0x00 /* 16 bits */
#define PCI_DEVICE_ID 0x02 /* 16 bits */
#define PCI_COMMAND 0x04 /* 16 bits */
#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
#define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */
#define PCI_COMMAND_MASTER 0x4 /* Enable bus master */
#define PCI_STATUS 0x06 /* 16 bits */
#define PCI_REVISION_ID 0x08 /* 8 bits */
#define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */
#define PCI_CLASS_DEVICE 0x0a /* Device class */
#define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */
#define PCI_LATENCY_TIMER 0x0d /* 8 bits */
#define PCI_HEADER_TYPE 0x0e /* 8 bits */
#define PCI_HEADER_TYPE_NORMAL 0
#define PCI_HEADER_TYPE_BRIDGE 1
#define PCI_HEADER_TYPE_CARDBUS 2
#define PCI_HEADER_TYPE_MULTI_FUNCTION 0x80
#define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */
#define PCI_PRIMARY_BUS 0x18 /* Primary bus number */
#define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */
#define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */
#define PCI_SUBSYSTEM_VENDOR_ID 0x2c /* 16 bits */
#define PCI_SUBSYSTEM_ID 0x2e /* 16 bits */
#define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
#define PCI_MIN_GNT 0x3e /* 8 bits */
#define PCI_MAX_LAT 0x3f /* 8 bits */
/* Capability lists */
#define PCI_CAP_LIST_ID 0 /* Capability ID */
#define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */
#define PCI_REVISION 0x08 /* obsolete, use PCI_REVISION_ID */
#define PCI_SUBVENDOR_ID 0x2c /* obsolete, use PCI_SUBSYSTEM_VENDOR_ID */
#define PCI_SUBDEVICE_ID 0x2e /* obsolete, use PCI_SUBSYSTEM_ID */
/* Bits in the PCI Status Register (PCI 2.3 spec) */
#define PCI_STATUS_RESERVED1 0x007
#define PCI_STATUS_INT_STATUS 0x008
#define PCI_STATUS_CAP_LIST 0x010
#define PCI_STATUS_66MHZ 0x020
#define PCI_STATUS_RESERVED2 0x040
#define PCI_STATUS_FAST_BACK 0x080
#define PCI_STATUS_DEVSEL 0x600
#define PCI_STATUS_RESERVED_MASK_LO (PCI_STATUS_RESERVED1 | \
PCI_STATUS_INT_STATUS | PCI_STATUS_CAPABILITIES | \
PCI_STATUS_66MHZ | PCI_STATUS_RESERVED2 | PCI_STATUS_FAST_BACK)
#define PCI_STATUS_RESERVED_MASK_HI (PCI_STATUS_DEVSEL >> 8)
/* Bits in the PCI Command Register (PCI 2.3 spec) */
#define PCI_COMMAND_RESERVED 0xf800
#define PCI_COMMAND_RESERVED_MASK_HI (PCI_COMMAND_RESERVED >> 8)
/* 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
/* Bits in cap_present field. */
enum {
QEMU_PCI_CAP_MSIX = 0x1,
};
struct PCIDevice {
DeviceState qdev;
/* PCI config space */
uint8_t config[PCI_CONFIG_SPACE_SIZE];
/* Used to enable config checks on load. Note that writeable bits are
* never checked even if set in cmask. */
uint8_t cmask[PCI_CONFIG_SPACE_SIZE];
/* Used to implement R/W bytes */
uint8_t wmask[PCI_CONFIG_SPACE_SIZE];
/* Used to allocate config space for capabilities. */
uint8_t used[PCI_CONFIG_SPACE_SIZE];
/* 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;
PCIUnregisterFunc *unregister;
/* IRQ objects for the INTA-INTD pins. */
qemu_irq *irq;
/* Current IRQ levels. Used internally by the generic PCI code. */
int irq_state[4];
/* 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. */
int msix_mmio_index;
/* Reference-count for entries actually in use by driver. */
unsigned *msix_entry_used;
/* Region including the MSI-X table */
uint32_t msix_bar_size;
/* Version id needed for VMState */
int32_t version_id;
};
PCIDevice *pci_register_device(PCIBus *bus, const char *name,
int instance_size, int devfn,
PCIConfigReadFunc *config_read,
PCIConfigWriteFunc *config_write);
int pci_unregister_device(PCIDevice *pci_dev);
void pci_register_bar(PCIDevice *pci_dev, int region_num,
uint32_t size, int type,
PCIMapIORegionFunc *map_func);
int pci_add_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size);
void pci_del_capability(PCIDevice *pci_dev, uint8_t cap_id, uint8_t cap_size);
void pci_reserve_capability(PCIDevice *pci_dev, uint8_t offset, uint8_t 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);
typedef void (*pci_set_irq_fn)(qemu_irq *pic, int irq_num, int level);
typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);
PCIBus *pci_register_bus(DeviceState *parent, const char *name,
pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
qemu_irq *pic, int devfn_min, int nirq);
PCIDevice *pci_nic_init(NICInfo *nd, const char *default_model,
const char *default_devaddr);
void pci_data_write(void *opaque, uint32_t addr, uint32_t val, int len);
uint32_t pci_data_read(void *opaque, uint32_t addr, int len);
int pci_bus_num(PCIBus *s);
void pci_for_each_device(int bus_num, void (*fn)(PCIDevice *d));
PCIBus *pci_find_bus(int bus_num);
PCIDevice *pci_find_device(int bus_num, int slot, int function);
int pci_read_devaddr(Monitor *mon, const char *addr, int *domp, int *busp,
unsigned *slotp);
void pci_info(Monitor *mon);
PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did,
pci_map_irq_fn map_irq, const char *name);
static inline void
pci_set_byte(uint8_t *config, uint8_t val)
{
*config = val;
}
static inline uint8_t
pci_get_byte(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(uint8_t *config)
{
return le16_to_cpupu((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(uint8_t *config)
{
return le32_to_cpupu((uint32_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_class(uint8_t *pci_config, uint16_t val)
{
pci_set_word(&pci_config[PCI_CLASS_DEVICE], val);
}
typedef int (*pci_qdev_initfn)(PCIDevice *dev);
typedef struct {
DeviceInfo qdev;
pci_qdev_initfn init;
PCIConfigReadFunc *config_read;
PCIConfigWriteFunc *config_write;
} PCIDeviceInfo;
void pci_qdev_register(PCIDeviceInfo *info);
void pci_qdev_register_many(PCIDeviceInfo *info);
PCIDevice *pci_create(const char *name, const char *devaddr);
PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name);
/* lsi53c895a.c */
#define LSI_MAX_DEVS 7
void lsi_scsi_attach(DeviceState *host, BlockDriverState *bd, int id);
/* vmware_vga.c */
void pci_vmsvga_init(PCIBus *bus);
/* usb-uhci.c */
void usb_uhci_piix3_init(PCIBus *bus, int devfn);
void usb_uhci_piix4_init(PCIBus *bus, int devfn);
/* usb-ohci.c */
void usb_ohci_init_pci(struct PCIBus *bus, int num_ports, int devfn);
/* prep_pci.c */
PCIBus *pci_prep_init(qemu_irq *pic);
/* apb_pci.c */
PCIBus *pci_apb_init(target_phys_addr_t special_base,
target_phys_addr_t mem_base,
qemu_irq *pic, PCIBus **bus2, PCIBus **bus3);
/* sh_pci.c */
PCIBus *sh_pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
qemu_irq *pic, int devfn_min, int nirq);
#endif
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