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pci: introduce helper function to handle msi-x and msi. 

this patch implements helper functions to handle msi-x and msi
uniformly.
They will be used later.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Isaku Yamahata 2010-10-19 18:06:29 +09:00 committed by Michael S. Tsirkin
parent aabcf5266f
commit a5d1fd20cc
2 changed files with 22 additions and 0 deletions
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19
hw/pci.c
View File

@ -25,6 +25,8 @@
#include "pci.h" #include "pci.h"
#include "pci_bridge.h" #include "pci_bridge.h"
#include "pci_internals.h" #include "pci_internals.h"
#include "msix.h"
#include "msi.h"
#include "monitor.h" #include "monitor.h"
#include "net.h" #include "net.h"
#include "sysemu.h" #include "sysemu.h"
@ -1034,6 +1036,23 @@ static void pci_set_irq(void *opaque, int irq_num, int level)
pci_change_irq_level(pci_dev, irq_num, change); pci_change_irq_level(pci_dev, irq_num, change);
} }
bool pci_msi_enabled(PCIDevice *dev)
{
return msix_enabled(dev) || msi_enabled(dev);
}
void pci_msi_notify(PCIDevice *dev, unsigned int vector)
{
if (msix_enabled(dev)) {
msix_notify(dev, vector);
} else if (msi_enabled(dev)) {
msi_notify(dev, vector);
} else {
/* MSI/MSI-X must be enabled */
abort();
}
}
/***********************************************************/ /***********************************************************/
/* monitor info on PCI */ /* monitor info on PCI */

3
hw/pci.h
View File

@ -239,6 +239,9 @@ void do_pci_info_print(Monitor *mon, const QObject *data);
void do_pci_info(Monitor *mon, QObject **ret_data); void do_pci_info(Monitor *mon, QObject **ret_data);
void pci_bridge_update_mappings(PCIBus *b); void pci_bridge_update_mappings(PCIBus *b);
bool pci_msi_enabled(PCIDevice *dev);
void pci_msi_notify(PCIDevice *dev, unsigned int vector);
static inline void static inline void
pci_set_byte(uint8_t *config, uint8_t val) pci_set_byte(uint8_t *config, uint8_t val)
{ {