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Add some pcib methods to get ARI-related information

Browse source 
Differential Revision:	https://reviews.freebsd.org/D72
Reviewed by:		jhb
MFC after: 		1 month
Sponsored by:		Sandvine Inc.
This commit is contained in:
Ryan Stone 2015-03-01 00:39:40 +00:00
parent 5ce88dc6da
commit 2397d2d817
5 changed files with 74 additions and 0 deletions
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33
sys/dev/pci/pci_pci.c
View file

@ -64,6 +64,9 @@ static void pcib_write_config(device_t dev, u_int b, u_int s,
static int pcib_ari_maxslots(device_t dev);
static int pcib_ari_maxfuncs(device_t dev);
static int pcib_try_enable_ari(device_t pcib, device_t dev);
static int pcib_ari_enabled(device_t pcib);
static void pcib_ari_decode_rid(device_t pcib, uint16_t rid,
int *bus, int *slot, int *func);
static device_method_t pcib_methods[] = {
/* Device interface */
@ -104,6 +107,8 @@ static device_method_t pcib_methods[] = {
DEVMETHOD(pcib_power_for_sleep, pcib_power_for_sleep),
DEVMETHOD(pcib_get_rid, pcib_ari_get_rid),
DEVMETHOD(pcib_try_enable_ari, pcib_try_enable_ari),
DEVMETHOD(pcib_ari_enabled, pcib_ari_enabled),
DEVMETHOD(pcib_decode_rid, pcib_ari_decode_rid),
DEVMETHOD_END
};
@ -1883,6 +1888,24 @@ pcib_ari_maxfuncs(device_t dev)
return (PCI_FUNCMAX);
}
static void
pcib_ari_decode_rid(device_t pcib, uint16_t rid, int *bus, int *slot,
int *func)
{
struct pcib_softc *sc;
sc = device_get_softc(pcib);
*bus = PCI_RID2BUS(rid);
if (sc->flags & PCIB_ENABLE_ARI) {
*slot = PCIE_ARI_RID2SLOT(rid);
*func = PCIE_ARI_RID2FUNC(rid);
} else {
*slot = PCI_RID2SLOT(rid);
*func = PCI_RID2FUNC(rid);
}
}
/*
* Since we are a child of a PCI bus, its parent must support the pcib interface.
*/
@ -2014,6 +2037,16 @@ pcib_power_for_sleep(device_t pcib, device_t dev, int *pstate)
return (PCIB_POWER_FOR_SLEEP(bus, dev, pstate));
}
static int
pcib_ari_enabled(device_t pcib)
{
struct pcib_softc *sc;
sc = device_get_softc(pcib);
return ((sc->flags & PCIB_ENABLE_ARI) != 0);
}
static uint16_t
pcib_ari_get_rid(device_t pcib, device_t dev)
{

25
sys/dev/pci/pcib_if.m
View file

@ -39,6 +39,13 @@ CODE {
{
return (PCI_INVALID_IRQ);
}
static int
pcib_null_ari_enabled(device_t pcib)
{
return (0);
}
};
#
@ -182,3 +189,21 @@ METHOD int try_enable_ari {
device_t dev;
};
#
# Return non-zero if PCI ARI is enabled, or zero otherwise
#
METHOD int ari_enabled {
device_t pcib;
} DEFAULT pcib_null_ari_enabled;
#
# Decode a PCI Routing Identifier (RID) into PCI bus/slot/function
#
METHOD void decode_rid {
device_t pcib;
uint16_t rid;
int *bus;
int *slot;
int *func;
} DEFAULT pcib_decode_rid;

2
sys/dev/pci/pcib_private.h
View file

@ -170,5 +170,7 @@ int pcib_alloc_msix(device_t pcib, device_t dev, int *irq);
int pcib_release_msix(device_t pcib, device_t dev, int irq);
int pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, uint32_t *data);
uint16_t pcib_get_rid(device_t pcib, device_t dev);
void pcib_decode_rid(device_t pcib, uint16_t rid, int *bus,
int *slot, int *func);
#endif

10
sys/dev/pci/pcib_support.c
View file

@ -66,3 +66,13 @@ pcib_get_rid(device_t pcib, device_t dev)
return (PCI_RID(bus, slot, func));
}
void
pcib_decode_rid(device_t pcib, uint16_t rid, int *bus, int *slot,
int *func)
{
*bus = PCI_RID2BUS(rid);
*slot = PCI_RID2SLOT(rid);
*func = PCI_RID2FUNC(rid);
}

4
sys/dev/pci/pcireg.h
View file

@ -68,6 +68,10 @@
#define PCI_RID2SLOT(rid) (((rid) >> PCI_RID_SLOT_SHIFT) & PCI_SLOTMAX)
#define PCI_RID2FUNC(rid) (((rid) >> PCI_RID_FUNC_SHIFT) & PCI_FUNCMAX)
#define PCIE_ARI_RID2SLOT(rid) (0)
#define PCIE_ARI_RID2FUNC(rid) \
(((rid) >> PCI_RID_FUNC_SHIFT) & PCIE_ARI_FUNCMAX)
#define PCIE_ARI_SLOT(func) (((func) >> PCI_RID_SLOT_SHIFT) & PCI_SLOTMAX)
#define PCIE_ARI_FUNC(func) (((func) >> PCI_RID_FUNC_SHIFT) & PCI_FUNCMAX)