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[src/trunk]: src/sys/arch/arm/broadcom bcm2838: Add ACPI support for the EMMC...
details: https://anonhg.NetBSD.org/src/rev/9c899cfbb235
branches: trunk
changeset: 985100:9c899cfbb235
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sun Aug 08 10:32:26 2021 +0000
description:
bcm2838: Add ACPI support for the EMMC2 SDHCI controller.
diffstat:
sys/arch/arm/broadcom/bcm2838_emmc2_acpi.c | 164 +++++++++++++++++++++++++++++
sys/arch/arm/broadcom/files.bcm2835 | 4 +-
2 files changed, 167 insertions(+), 1 deletions(-)
diffs (186 lines):
diff -r 08ae5aca2a9e -r 9c899cfbb235 sys/arch/arm/broadcom/bcm2838_emmc2_acpi.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/broadcom/bcm2838_emmc2_acpi.c Sun Aug 08 10:32:26 2021 +0000
@@ -0,0 +1,164 @@
+/* $NetBSD: bcm2838_emmc2_acpi.c,v 1.1 2021/08/08 10:32:26 jmcneill Exp $ */
+
+/*
+ * Copyright (c) 2021 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: bcm2838_emmc2_acpi.c,v 1.1 2021/08/08 10:32:26 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+#include <sys/kmem.h>
+
+#include <dev/acpi/acpireg.h>
+#include <dev/acpi/acpivar.h>
+#include <dev/acpi/acpi_intr.h>
+
+#include <dev/sdmmc/sdhcreg.h>
+#include <dev/sdmmc/sdhcvar.h>
+#include <dev/sdmmc/sdmmcvar.h>
+
+#define _COMPONENT ACPI_RESOURCE_COMPONENT
+ACPI_MODULE_NAME ("bcmemmc2_acpi")
+
+static int bcmemmc2_acpi_match(device_t, cfdata_t, void *);
+static void bcmemmc2_acpi_attach(device_t, device_t, void *);
+static void bcmemmc2_acpi_attach1(device_t);
+
+static const char * const compatible[] = {
+ "BRCME88C",
+ NULL
+};
+
+struct bcmemmc2_acpi_softc {
+ struct sdhc_softc sc;
+ bus_space_tag_t sc_memt;
+ bus_space_handle_t sc_memh;
+ bus_size_t sc_memsize;
+ void *sc_ih;
+ struct sdhc_host *sc_hosts[1];
+};
+
+CFATTACH_DECL_NEW(bcmemmc2_acpi, sizeof(struct bcmemmc2_acpi_softc),
+ bcmemmc2_acpi_match, bcmemmc2_acpi_attach, NULL, NULL);
+
+static int
+bcmemmc2_acpi_match(device_t parent, cfdata_t match, void *opaque)
+{
+ struct acpi_attach_args *aa = opaque;
+
+ if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
+ return 0;
+
+ return acpi_match_hid(aa->aa_node->ad_devinfo, compatible);
+}
+
+static void
+bcmemmc2_acpi_attach(device_t parent, device_t self, void *opaque)
+{
+ struct bcmemmc2_acpi_softc *sc = device_private(self);
+ struct acpi_attach_args *aa = opaque;
+ struct acpi_resources res;
+ struct acpi_mem *mem;
+ struct acpi_irq *irq;
+ ACPI_STATUS rv;
+
+ sc->sc.sc_dev = self;
+ sc->sc.sc_dmat = aa->aa_dmat;
+ sc->sc.sc_host = sc->sc_hosts;
+ sc->sc_memt = aa->aa_memt;
+
+ rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
+ &res, &acpi_resource_parse_ops_default);
+ if (ACPI_FAILURE(rv))
+ return;
+
+ mem = acpi_res_mem(&res, 0);
+ irq = acpi_res_irq(&res, 0);
+ if (mem == NULL || irq == NULL) {
+ aprint_error_dev(self, "incomplete resources\n");
+ goto cleanup;
+ }
+ if (mem->ar_length == 0) {
+ aprint_error_dev(self, "zero length memory resource\n");
+ goto cleanup;
+ }
+ sc->sc_memsize = mem->ar_length;
+
+ if (bus_space_map(sc->sc_memt, mem->ar_base, sc->sc_memsize, 0,
+ &sc->sc_memh)) {
+ aprint_error_dev(self, "couldn't map registers\n");
+ goto cleanup;
+ }
+
+ /*
+ * The controller doesn't honour standard SDHCI voltage registers, so
+ * disable UHS modes.
+ */
+ sc->sc.sc_flags = SDHC_FLAG_32BIT_ACCESS |
+ SDHC_FLAG_USE_DMA |
+ SDHC_FLAG_USE_ADMA2 |
+ SDHC_FLAG_NO_1_8_V;
+
+ sc->sc_ih = acpi_intr_establish(self,
+ (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
+ IPL_BIO, true, sdhc_intr, &sc->sc, device_xname(self));
+ if (sc->sc_ih == NULL) {
+ aprint_error_dev(self,
+ "couldn't establish interrupt handler\n");
+ goto unmap;
+ }
+
+ config_defer(self, bcmemmc2_acpi_attach1);
+
+ acpi_resource_cleanup(&res);
+ return;
+
+unmap:
+ bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
+ sc->sc_memsize = 0;
+cleanup:
+ acpi_resource_cleanup(&res);
+}
+
+static void
+bcmemmc2_acpi_attach1(device_t self)
+{
+ struct bcmemmc2_acpi_softc *sc = device_private(self);
+
+ if (sdhc_host_found(&sc->sc, sc->sc_memt, sc->sc_memh,
+ sc->sc_memsize) != 0) {
+ aprint_error_dev(self, "couldn't initialize host\n");
+ goto fail;
+ }
+
+ return;
+
+fail:
+ if (sc->sc_ih != NULL)
+ acpi_intr_disestablish(sc->sc_ih);
+ sc->sc_ih = NULL;
+}
diff -r 08ae5aca2a9e -r 9c899cfbb235 sys/arch/arm/broadcom/files.bcm2835
--- a/sys/arch/arm/broadcom/files.bcm2835 Sun Aug 08 10:28:26 2021 +0000
+++ b/sys/arch/arm/broadcom/files.bcm2835 Sun Aug 08 10:32:26 2021 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.bcm2835,v 1.40 2021/03/10 11:03:48 mlelstv Exp $
+# $NetBSD: files.bcm2835,v 1.41 2021/08/08 10:32:26 jmcneill Exp $
#
# Configuration info for Broadcom BCM2835 ARM Peripherals
#
@@ -67,6 +67,8 @@
ifdef acpinodebus
attach sdhc at acpinodebus with bcmemmc_acpi
file arch/arm/broadcom/bcm2835_emmc_acpi.c bcmemmc_acpi
+attach sdhc at acpinodebus with bcmemmc2_acpi
+file arch/arm/broadcom/bcm2838_emmc2_acpi.c bcmemmc2_acpi
endif
# SD Host Controller (BCM2835_SDHOST_BASE)
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