[PATCHv5 04/13] qemu: helper routines for pci access

Michael S. Tsirkin
2009-06-18T13:16:36Z

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>
---
hw/pci.h | 30 +++++++++++++++++++++++++++---
1 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/hw/pci.h b/hw/pci.h
index 4f90fdc..b0a8acf 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -236,21 +236,45 @@ 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);
--
1.6.2.2