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qemu/pci: helper routines for pci access 

Add inline routines for convenient access to pci devices
with correct (little) endianness. Will be used by MSI-X support.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2009-06-21 19:45:30 +03:00 committed by Anthony Liguori
parent b7ee1603c1
commit 14e1255991
1 changed files with 27 additions and 3 deletions
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30
hw/pci.h
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@ -214,22 +214,46 @@ 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_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)
{
cpu_to_le16wu((uint16_t *)&pci_config[PCI_VENDOR_ID], 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)
{
cpu_to_le16wu((uint16_t *)&pci_config[PCI_DEVICE_ID], val);
pci_set_word(&pci_config[PCI_DEVICE_ID], val);
}
static inline void
pci_config_set_class(uint8_t *pci_config, uint16_t val)
{
cpu_to_le16wu((uint16_t *)&pci_config[PCI_CLASS_DEVICE], val);
pci_set_word(&pci_config[PCI_CLASS_DEVICE], val);
}
typedef void (*pci_qdev_initfn)(PCIDevice *dev);