Author: jchandra Date: Thu Feb 7 04:50:16 2019 New Revision: 343860 URL: https://svnweb.freebsd.org/changeset/base/343860
Log: pci_host_generic_acpi: use IORT data for MSI/MSI-X Use the information from IORT parsing to translate the PCI RID to GIC ITS device ID. And similarly, use the information to find the PIC XREF identifier to be used for PCI devices. Reviewed by: andrew Differential Revision: https://reviews.freebsd.org/D18004 Modified: head/sys/dev/pci/pci_host_generic_acpi.c Modified: head/sys/dev/pci/pci_host_generic_acpi.c ============================================================================== --- head/sys/dev/pci/pci_host_generic_acpi.c Thu Feb 7 03:58:29 2019 (r343859) +++ head/sys/dev/pci/pci_host_generic_acpi.c Thu Feb 7 04:50:16 2019 (r343860) @@ -348,14 +348,52 @@ generic_pcie_acpi_route_interrupt(device_t bus, device return (acpi_pcib_route_interrupt(bus, dev, pin, &sc->ap_prt)); } +static u_int +generic_pcie_get_xref(device_t pci, device_t child) +{ + struct generic_pcie_acpi_softc *sc; + uintptr_t rid; + u_int xref, devid; + int err; + + sc = device_get_softc(pci); + err = pcib_get_id(pci, child, PCI_ID_RID, &rid); + if (err != 0) + return (ACPI_MSI_XREF); + err = acpi_iort_map_pci_msi(sc->base.ecam, rid, &xref, &devid); + if (err != 0) + return (ACPI_MSI_XREF); + return (xref); +} + +static u_int +generic_pcie_map_id(device_t pci, device_t child, uintptr_t *id) +{ + struct generic_pcie_acpi_softc *sc; + uintptr_t rid; + u_int xref, devid; + int err; + + sc = device_get_softc(pci); + err = pcib_get_id(pci, child, PCI_ID_RID, &rid); + if (err != 0) + return (err); + err = acpi_iort_map_pci_msi(sc->base.ecam, rid, &xref, &devid); + if (err == 0) + *id = devid; + else + *id = rid; /* RID not in IORT, likely FW bug, ignore */ + return (0); +} + static int generic_pcie_acpi_alloc_msi(device_t pci, device_t child, int count, int maxcount, int *irqs) { #if defined(INTRNG) - return (intr_alloc_msi(pci, child, ACPI_MSI_XREF, count, maxcount, - irqs)); + return (intr_alloc_msi(pci, child, generic_pcie_get_xref(pci, child), + count, maxcount, irqs)); #else return (ENXIO); #endif @@ -367,7 +405,8 @@ generic_pcie_acpi_release_msi(device_t pci, device_t c { #if defined(INTRNG) - return (intr_release_msi(pci, child, ACPI_MSI_XREF, count, irqs)); + return (intr_release_msi(pci, child, generic_pcie_get_xref(pci, child), + count, irqs)); #else return (ENXIO); #endif @@ -379,7 +418,8 @@ generic_pcie_acpi_map_msi(device_t pci, device_t child { #if defined(INTRNG) - return (intr_map_msi(pci, child, ACPI_MSI_XREF, irq, addr, data)); + return (intr_map_msi(pci, child, generic_pcie_get_xref(pci, child), irq, + addr, data)); #else return (ENXIO); #endif @@ -390,7 +430,8 @@ generic_pcie_acpi_alloc_msix(device_t pci, device_t ch { #if defined(INTRNG) - return (intr_alloc_msix(pci, child, ACPI_MSI_XREF, irq)); + return (intr_alloc_msix(pci, child, generic_pcie_get_xref(pci, child), + irq)); #else return (ENXIO); #endif @@ -401,7 +442,8 @@ generic_pcie_acpi_release_msix(device_t pci, device_t { #if defined(INTRNG) - return (intr_release_msix(pci, child, ACPI_MSI_XREF, irq)); + return (intr_release_msix(pci, child, generic_pcie_get_xref(pci, child), + irq)); #else return (ENXIO); #endif @@ -412,14 +454,8 @@ generic_pcie_acpi_get_id(device_t pci, device_t child, uintptr_t *id) { - /* - * Use the PCI RID to find the MSI ID for now, we support only 1:1 - * mapping - * - * On aarch64, more complex mapping would come from IORT table - */ if (type == PCI_ID_MSI) - return (pcib_get_id(pci, child, PCI_ID_RID, id)); + return (generic_pcie_map_id(pci, child, id)); else return (pcib_get_id(pci, child, type, id)); } _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
