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author | Pyun YongHyeon <yongari@FreeBSD.org> | 2009-11-19 21:45:06 +0000 |
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committer | Pyun YongHyeon <yongari@FreeBSD.org> | 2009-11-19 21:45:06 +0000 |
commit | cc3c3b4ec4c153aed33567795e3085c6c464d66b (patch) | |
tree | 74286bc822303c53eeb95453aeb4553930f02a3f /sys/dev/et | |
parent | 5b8f4900f3f7c3d11a91dc76edd5d787f0c6dc15 (diff) | |
download | src-cc3c3b4ec4c153aed33567795e3085c6c464d66b.tar.gz src-cc3c3b4ec4c153aed33567795e3085c6c464d66b.zip |
Add MSI support.
Notes
Notes:
svn path=/head/; revision=199552
Diffstat (limited to 'sys/dev/et')
-rw-r--r-- | sys/dev/et/if_et.c | 47 | ||||
-rw-r--r-- | sys/dev/et/if_etvar.h | 7 |
2 files changed, 44 insertions, 10 deletions
diff --git a/sys/dev/et/if_et.c b/sys/dev/et/if_et.c index d9af586d04a1..e6e5d60e618e 100644 --- a/sys/dev/et/if_et.c +++ b/sys/dev/et/if_et.c @@ -76,6 +76,10 @@ MODULE_DEPEND(et, pci, 1, 1, 1); MODULE_DEPEND(et, ether, 1, 1, 1); MODULE_DEPEND(et, miibus, 1, 1, 1); +/* Tunables. */ +static int msi_disable = 0; +TUNABLE_INT("hw.re.msi_disable", &msi_disable); + static int et_probe(device_t); static int et_attach(device_t); static int et_detach(device_t); @@ -230,7 +234,7 @@ et_attach(device_t dev) struct et_softc *sc; struct ifnet *ifp; uint8_t eaddr[ETHER_ADDR_LEN]; - int error; + int cap, error, msic; sc = device_get_softc(dev); sc->dev = dev; @@ -268,13 +272,38 @@ et_attach(device_t dev) sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res); sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res); + msic = 0; + if (pci_find_extcap(dev, PCIY_EXPRESS, &cap) == 0) { + sc->sc_expcap = cap; + sc->sc_flags |= ET_FLAG_PCIE; + msic = pci_msi_count(dev); + if (bootverbose) + device_printf(dev, "MSI count : %d\n", msic); + } + if (msic > 0 && msi_disable == 0) { + msic = 1; + if (pci_alloc_msi(dev, &msic) == 0) { + if (msic == 1) { + device_printf(dev, "Using %d MSI message\n", + msic); + sc->sc_flags |= ET_FLAG_MSI; + } else + pci_release_msi(dev); + } + } + /* * Allocate IRQ */ - sc->sc_irq_rid = 0; - sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, - &sc->sc_irq_rid, - RF_SHAREABLE | RF_ACTIVE); + if ((sc->sc_flags & ET_FLAG_MSI) == 0) { + sc->sc_irq_rid = 0; + sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, + &sc->sc_irq_rid, RF_SHAREABLE | RF_ACTIVE); + } else { + sc->sc_irq_rid = 1; + sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, + &sc->sc_irq_rid, RF_ACTIVE); + } if (sc->sc_irq_res == NULL) { device_printf(dev, "can't allocate irq\n"); error = ENXIO; @@ -323,8 +352,7 @@ et_attach(device_t dev) callout_init_mtx(&sc->sc_tick, &sc->sc_mtx, 0); error = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_NET | INTR_MPSAFE, - NULL, et_intr, sc, &sc->sc_irq_handle); - + NULL, et_intr, sc, &sc->sc_irq_handle); if (error) { ether_ifdetach(ifp); device_printf(dev, "can't setup intr\n"); @@ -363,6 +391,8 @@ et_detach(device_t dev) bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid, sc->sc_irq_res); } + if ((sc->sc_flags & ET_FLAG_MSI) != 0) + pci_release_msi(dev); if (sc->sc_mem_res != NULL) { bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mem_rid, @@ -1433,7 +1463,8 @@ et_chip_init(struct et_softc *sc) CSR_WRITE_4(sc, ET_LOOPBACK, 0); /* Clear MSI configure */ - CSR_WRITE_4(sc, ET_MSI_CFG, 0); + if ((sc->sc_flags & ET_FLAG_MSI) == 0) + CSR_WRITE_4(sc, ET_MSI_CFG, 0); /* Disable timer */ CSR_WRITE_4(sc, ET_TIMER, 0); diff --git a/sys/dev/et/if_etvar.h b/sys/dev/et/if_etvar.h index 2c092ab83ce0..5077745d9de5 100644 --- a/sys/dev/et/if_etvar.h +++ b/sys/dev/et/if_etvar.h @@ -238,6 +238,7 @@ struct et_softc { struct arpcom arpcom; int sc_if_flags; uint32_t sc_flags; /* ET_FLAG_ */ + int sc_expcap; int sc_mem_rid; @@ -277,7 +278,9 @@ struct et_softc { #define ET_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) #define ET_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED) -#define ET_FLAG_TXRX_ENABLED 0x1 -#define ET_FLAG_JUMBO 0x2 +#define ET_FLAG_PCIE 0x0001 +#define ET_FLAG_MSI 0x0002 +#define ET_FLAG_TXRX_ENABLED 0x0100 +#define ET_FLAG_JUMBO 0x0200 #endif /* !_IF_ETVAR_H */ |