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head/sys/arm64/arm64/gic_v3_its.c
| Show First 20 Lines • Show All 174 Lines • ▼ Show 20 Lines | gic_v3_its_attach(device_t dev) | ||||
| uint64_t gits_tmp; | uint64_t gits_tmp; | ||||
| uint32_t gits_pidr2; | uint32_t gits_pidr2; | ||||
| int rid; | int rid; | ||||
| int ret; | int ret; | ||||
| sc = device_get_softc(dev); | sc = device_get_softc(dev); | ||||
| /* | /* | ||||
| * XXX ARM64TODO: Avoid configuration of more than one ITS | |||||
| * device. To be removed when multi-PIC support is added | |||||
| * to FreeBSD (or at least multi-ITS is implemented). Limit | |||||
| * supported ITS sockets to '0' only. | |||||
| */ | |||||
| if (device_get_unit(dev) != 0) { | |||||
| device_printf(dev, | |||||
| "Only single instance of ITS is supported, exitting...\n"); | |||||
| return (ENXIO); | |||||
| } | |||||
| sc->its_socket = 0; | |||||
| /* | |||||
| * Initialize sleep & spin mutex for ITS | * Initialize sleep & spin mutex for ITS | ||||
| */ | */ | ||||
| /* Protects ITS device list and assigned LPIs bitmaps. */ | /* Protects ITS device list and assigned LPIs bitmaps. */ | ||||
| mtx_init(&sc->its_mtx, "ITS sleep lock", NULL, MTX_DEF); | mtx_init(&sc->its_mtx, "ITS sleep lock", NULL, MTX_DEF); | ||||
| /* Protects access to ITS command circular buffer. */ | /* Protects access to ITS command circular buffer. */ | ||||
| mtx_init(&sc->its_spin_mtx, "ITS spin lock", NULL, MTX_SPIN); | mtx_init(&sc->its_spin_mtx, "ITS spin lock", NULL, MTX_SPIN); | ||||
| rid = 0; | rid = 0; | ||||
| ▲ Show 20 Lines • Show All 361 Lines • ▼ Show 20 Lines | if (device_is_attached(its_sc->dev)) { | ||||
| * XXX ARM64TODO: This is part of the workaround that | * XXX ARM64TODO: This is part of the workaround that | ||||
| * saves ITS software context for further use in | * saves ITS software context for further use in | ||||
| * mask/unmask and here. This should be removed as soon | * mask/unmask and here. This should be removed as soon | ||||
| * as the upper layer is capable of passing the ITS | * as the upper layer is capable of passing the ITS | ||||
| * context to this function. | * context to this function. | ||||
| */ | */ | ||||
| sc = its_sc; | sc = its_sc; | ||||
| } else | } else | ||||
| return (ENXIO); | |||||
| /* Skip if running secondary init on a wrong socket */ | |||||
| if (sc->its_socket != CPU_CURRENT_SOCKET) | |||||
| return (ENXIO); | return (ENXIO); | ||||
| } | } | ||||
| /* | /* | ||||
| * Check for LPIs support on this Re-Distributor. | * Check for LPIs support on this Re-Distributor. | ||||
| */ | */ | ||||
| parent = device_get_parent(sc->dev); | parent = device_get_parent(sc->dev); | ||||
| gic_sc = device_get_softc(parent); | gic_sc = device_get_softc(parent); | ||||
| ▲ Show 20 Lines • Show All 1,102 Lines • Show Last 20 Lines | |||||