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[src/trunk]: src/sys/arch/arm/broadcom Add BCM2835 EMMC acpi glue



details:   https://anonhg.NetBSD.org/src/rev/64fbe5a7a00a
branches:  trunk
changeset: 1006021:64fbe5a7a00a
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Dec 30 18:53:34 2019 +0000

description:
Add BCM2835 EMMC acpi glue

diffstat:

 sys/arch/arm/broadcom/bcm2835_emmc_acpi.c |  215 ++++++++++++++++++++++++++++++
 sys/arch/arm/broadcom/files.bcm2835       |    5 +-
 2 files changed, 219 insertions(+), 1 deletions(-)

diffs (238 lines):

diff -r ce40acbe669e -r 64fbe5a7a00a sys/arch/arm/broadcom/bcm2835_emmc_acpi.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/broadcom/bcm2835_emmc_acpi.c Mon Dec 30 18:53:34 2019 +0000
@@ -0,0 +1,215 @@
+/*     $NetBSD: bcm2835_emmc_acpi.c,v 1.1 2019/12/30 18:53:34 jmcneill Exp $   */
+
+/*
+ * Copyright (c) 2016 Kimihiro Nonaka <nonaka%NetBSD.org@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: bcm2835_emmc_acpi.c,v 1.1 2019/12/30 18:53:34 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>
+
+#include <arm/broadcom/bcm2835var.h>
+#include <arm/broadcom/bcm2835_mbox.h>
+
+#include <evbarm/rpi/vcio.h>
+#include <evbarm/rpi/vcpm.h>
+#include <evbarm/rpi/vcprop.h>
+
+#define _COMPONENT     ACPI_RESOURCE_COMPONENT
+ACPI_MODULE_NAME       ("bcmemmc_acpi")
+
+static int     bcmemmc_acpi_match(device_t, cfdata_t, void *);
+static void    bcmemmc_acpi_attach(device_t, device_t, void *);
+static void    bcmemmc_acpi_attach1(device_t);
+
+static u_int   bcmemmc_acpi_emmc_clock_rate(void);
+
+static const char * const compatible[] = {
+       "BCM2847",
+       NULL
+};
+
+static struct {
+       struct vcprop_buffer_hdr        vb_hdr;
+       struct vcprop_tag_clockrate     vbt_emmcclockrate;
+       struct vcprop_tag end;
+} vb_emmc __cacheline_aligned = {
+       .vb_hdr = {
+               .vpb_len = sizeof(vb_emmc),
+               .vpb_rcode = VCPROP_PROCESS_REQUEST,
+       },
+       .vbt_emmcclockrate = {
+               .tag = {
+                       .vpt_tag = VCPROPTAG_GET_CLOCKRATE,
+                       .vpt_len = VCPROPTAG_LEN(vb_emmc.vbt_emmcclockrate),
+                       .vpt_rcode = VCPROPTAG_REQUEST
+               },
+               .id = VCPROP_CLK_EMMC
+       },
+       .end = {
+               .vpt_tag = VCPROPTAG_NULL
+       }
+};
+
+struct bcmemmc_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(bcmemmc_acpi, sizeof(struct bcmemmc_acpi_softc),
+    bcmemmc_acpi_match, bcmemmc_acpi_attach, NULL, NULL);
+
+static int
+bcmemmc_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
+bcmemmc_acpi_attach(device_t parent, device_t self, void *opaque)
+{
+       struct bcmemmc_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;
+       }
+
+       sc->sc.sc_flags = SDHC_FLAG_32BIT_ACCESS |
+                         SDHC_FLAG_HOSTCAPS |
+                         SDHC_FLAG_NO_HS_BIT;
+       sc->sc.sc_caps = SDHC_VOLTAGE_SUPP_3_3V | SDHC_HIGH_SPEED_SUPP |
+           (SDHC_MAX_BLK_LEN_1024 << SDHC_MAX_BLK_LEN_SHIFT);
+
+       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, bcmemmc_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
+bcmemmc_acpi_attach1(device_t self)
+{
+       struct bcmemmc_acpi_softc *sc = device_private(self);
+
+       sc->sc.sc_clkbase = bcmemmc_acpi_emmc_clock_rate() / 1000;
+
+       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;
+}
+
+static u_int
+bcmemmc_acpi_emmc_clock_rate(void)
+{
+       uint32_t res;
+       int error;
+
+       error = bcmmbox_request(BCMMBOX_CHANARM2VC, &vb_emmc,
+           sizeof(vb_emmc), &res);
+       if (error) {
+               printf("%s: mbox request failed (%d)\n", __func__, error);
+               return 0;
+       }
+
+        if (!vcprop_buffer_success_p(&vb_emmc.vb_hdr) ||
+            !vcprop_tag_success_p(&vb_emmc.vbt_emmcclockrate.tag) ||
+           vb_emmc.vbt_emmcclockrate.rate < 0)
+                return 0;
+
+       return vb_emmc.vbt_emmcclockrate.rate;
+}
diff -r ce40acbe669e -r 64fbe5a7a00a sys/arch/arm/broadcom/files.bcm2835
--- a/sys/arch/arm/broadcom/files.bcm2835       Mon Dec 30 18:43:38 2019 +0000
+++ b/sys/arch/arm/broadcom/files.bcm2835       Mon Dec 30 18:53:34 2019 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: files.bcm2835,v 1.36 2019/12/30 18:43:38 jmcneill Exp $
+#      $NetBSD: files.bcm2835,v 1.37 2019/12/30 18:53:34 jmcneill Exp $
 #
 # Configuration info for Broadcom BCM2835 ARM Peripherals
 #
@@ -56,6 +56,9 @@
 attach sdhc at fdt with bcmemmc
 file   arch/arm/broadcom/bcm2835_emmc.c        bcmemmc
 
+attach sdhc at acpinodebus with bcmemmc_acpi
+file   arch/arm/broadcom/bcm2835_emmc_acpi.c   bcmemmc_acpi
+
 # SD Host Controller (BCM2835_SDHOST_BASE)
 device bcmsdhost: sdmmcbus
 attach bcmsdhost at fdt with bcmsdhost



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