[src/trunk]: src/sys/arch/mips/ingenic support CI20's onboard Ethernet contro...

[macallan <macallan%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7ab5c51befab
branches:  trunk
changeset: 336691:7ab5c51befab
user:      macallan <macallan%NetBSD.org@localhost>
date:      Tue Mar 10 18:15:47 2015 +0000

description:
support CI20's onboard Ethernet controller

diffstat:

 sys/arch/mips/ingenic/ingenic_dme.c |  165 ++++++++++++++++++++++++++++++++++++
 1 files changed, 165 insertions(+), 0 deletions(-)

diffs (169 lines):

diff -r e1eec6efa0ae -r 7ab5c51befab sys/arch/mips/ingenic/ingenic_dme.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/mips/ingenic/ingenic_dme.c       Tue Mar 10 18:15:47 2015 +0000
@@ -0,0 +1,165 @@
+/*     $NetBSD: ingenic_dme.c,v 1.1 2015/03/10 18:15:47 macallan Exp $ */
+
+/*-
+ * Copyright (c) 2015 Michael Lorenz
+ * 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. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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: ingenic_dme.c,v 1.1 2015/03/10 18:15:47 macallan Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/mutex.h>
+#include <sys/bus.h>
+#include <sys/workqueue.h>
+
+#include <mips/ingenic/ingenic_var.h>
+#include <mips/ingenic/ingenic_regs.h>
+
+#include <net/if.h>
+#include <net/if_ether.h>
+#include <net/if_media.h>
+
+#include <dev/ic/dm9000var.h>
+#include <dev/ic/dm9000reg.h>
+
+#include "opt_ingenic.h"
+
+static int ingenic_dme_match(device_t, struct cfdata *, void *);
+static void ingenic_dme_attach(device_t, device_t, void *);
+static int ingenic_dme_intr(void *);
+
+CFATTACH_DECL_NEW(ingenic_dme, sizeof(struct dme_softc),
+    ingenic_dme_match, ingenic_dme_attach, NULL, NULL);
+
+#define GPIO_DME_INT           19
+#define GPIO_DME_INT_MASK      (1 << GPIO_DME_INT)
+
+/* ARGSUSED */
+static int
+ingenic_dme_match(device_t parent, struct cfdata *match, void *aux)
+{
+       struct apbus_attach_args *aa = aux;
+
+       if (strcmp(aa->aa_name, "dme") != 0)
+               return 0;
+
+       return 1;
+}
+
+/* ARGSUSED */
+static void
+ingenic_dme_attach(device_t parent, device_t self, void *aux)
+{
+       struct dme_softc *sc = device_private(self);
+       struct apbus_attach_args *aa = aux;
+       void *ih;
+       static uint8_t enaddr[ETHER_ADDR_LEN];
+       int error;
+
+       sc->sc_dev = self;
+
+       sc->sc_iot = aa->aa_bst;
+       sc->dme_io = JZ_DME_IO;
+       sc->dme_data = JZ_DME_DATA;
+       sc->sc_phy_initialized = 0;
+
+       if (aa->aa_addr == 0)
+               aa->aa_addr = JZ_DME_BASE;
+
+       error = bus_space_map(aa->aa_bst, aa->aa_addr, 4, 0, &sc->sc_ioh);
+       if (error) {
+               aprint_error_dev(self,
+                   "can't map registers for %s: %d\n", aa->aa_name, error);
+               return;
+       }
+
+       aprint_naive(": DM9000 Ethernet controller\n");
+       aprint_normal(": DM9000 Ethernet controller\n");
+
+
+       /* make sure the chip is powered up and not in reset */
+       gpio_as_output(1, 25);
+       gpio_set(1, 25, 1);
+       gpio_as_output(5, 12);
+       gpio_set(5, 12, 1);
+
+       /* setup pins to talk to the chip */
+       gpio_as_dev0(1, 1);
+       gpio_as_dev0(0, 0);
+       gpio_as_dev0(0, 1);
+       gpio_as_dev0(0, 2);
+       gpio_as_dev0(0, 3);
+       gpio_as_dev0(0, 4);
+       gpio_as_dev0(0, 5);
+       gpio_as_dev0(0, 6);
+       gpio_as_dev0(0, 7);
+
+       gpio_as_dev0(0, 16);
+       gpio_as_dev0(0, 17);
+       gpio_as_dev0(0, 26);
+
+       /* DM9000 interrupt is on GPIO E pin 19 */
+       gpio_as_intr_level(4, GPIO_DME_INT);
+       ih = evbmips_intr_establish(13, ingenic_dme_intr, sc);
+
+               if (ih == NULL) {
+               aprint_error_dev(self, "failed to establish interrupt %d\n",
+                    13);
+               goto fail;
+       }
+
+       /*
+        * XXX grab MAC address set by uboot
+        * I'm not sure uboot will program the MAC address into the chip when
+        * not netbooting, so this needs to go away
+        */
+       dme_read_c(sc, DM9000_PAB0, enaddr, 6);
+       dme_attach(sc, enaddr);
+       return;
+fail:
+       if (ih) {
+               evbmips_intr_disestablish(ih);
+       }
+       bus_space_unmap(sc->sc_iot, sc->sc_ioh, 4);
+}
+
+static int
+ingenic_dme_intr(void *arg)
+{
+       uint32_t reg;   
+       int ret = 0;
+
+       /* see if it's us */
+       reg = readreg(JZ_GPIO_E_BASE + JZ_GPIO_FLAG);
+       if (reg & GPIO_DME_INT_MASK) {
+               /* yes, it's ours, handle it... */
+               ret = dme_intr(arg);
+               /* ... and clear it */
+               writereg(JZ_GPIO_E_BASE + JZ_GPIO_FLAGC, GPIO_DME_INT_MASK);
+       }
+       return ret;
+}