Module Name:    src
Committed By:   jmcneill
Date:           Sat Jun 22 19:35:40 UTC 2019

Modified Files:
        src/sys/dev/acpi: xhci_acpi.c

Log Message:
Use bus_dmatag_subregion to get a 32-bit tag


To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/sys/dev/acpi/xhci_acpi.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

Modified files:

Index: src/sys/dev/acpi/xhci_acpi.c
diff -u src/sys/dev/acpi/xhci_acpi.c:1.4 src/sys/dev/acpi/xhci_acpi.c:1.5
--- src/sys/dev/acpi/xhci_acpi.c:1.4	Wed Jun 19 13:40:23 2019
+++ src/sys/dev/acpi/xhci_acpi.c	Sat Jun 22 19:35:40 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: xhci_acpi.c,v 1.4 2019/06/19 13:40:23 jmcneill Exp $ */
+/* $NetBSD: xhci_acpi.c,v 1.5 2019/06/22 19:35:40 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xhci_acpi.c,v 1.4 2019/06/19 13:40:23 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xhci_acpi.c,v 1.5 2019/06/22 19:35:40 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -130,10 +130,16 @@ xhci_acpi_attach(device_t parent, device
 	hccparams = bus_space_read_4(sc->sc_iot, sc->sc_ioh, XHCI_HCCPARAMS);
 	if (XHCI_HCC_AC64(hccparams)) {
 		aprint_verbose_dev(self, "using 64-bit DMA\n");
-		sc->sc_bus.ub_dmatag = aa->aa_dmat64;
+		sc->sc_bus.ub_dmatag = aa->aa_dmat;
 	} else {
 		aprint_verbose_dev(self, "using 32-bit DMA\n");
-		sc->sc_bus.ub_dmatag = aa->aa_dmat;
+		error = bus_dmatag_subregion(aa->aa_dmat, 0, 0xffffffff,
+		    &sc->sc_bus.ub_dmatag, BUS_DMA_WAITOK);
+		if (error != 0) {
+			aprint_error_dev(self, "couldn't create DMA tag: %d\n",
+			    error);
+			return;
+		}
 	}
 
         ih = acpi_intr_establish(self, (uint64_t)aa->aa_node->ad_handle,

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