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[src/trunk]: src/sys/arch/arm/sunxi Add support for sun6i/sun7i ethernet



details:   https://anonhg.NetBSD.org/src/rev/57fc6d46e840
branches:  trunk
changeset: 826944:57fc6d46e840
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Oct 07 13:28:59 2017 +0000

description:
Add support for sun6i/sun7i ethernet

diffstat:

 sys/arch/arm/sunxi/files.sunxi     |   11 +-
 sys/arch/arm/sunxi/sunxi_gmac.c    |  147 +++++++++++++++++++++++++
 sys/arch/arm/sunxi/sunxi_gmacclk.c |  211 +++++++++++++++++++++++++++++++++++++
 3 files changed, 368 insertions(+), 1 deletions(-)

diffs (truncated from 398 to 300 lines):

diff -r 5217be62882e -r 57fc6d46e840 sys/arch/arm/sunxi/files.sunxi
--- a/sys/arch/arm/sunxi/files.sunxi    Sat Oct 07 12:22:29 2017 +0000
+++ b/sys/arch/arm/sunxi/files.sunxi    Sat Oct 07 13:28:59 2017 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: files.sunxi,v 1.28 2017/10/06 21:20:59 jmcneill Exp $
+#      $NetBSD: files.sunxi,v 1.29 2017/10/07 13:28:59 jmcneill Exp $
 #
 # Configuration info for Allwinner sunxi family SoCs
 #
@@ -73,6 +73,11 @@
 attach sunxigates at fdt with sunxi_gates
 file   arch/arm/sunxi/sunxi_gates.c            sunxi_gates
 
+# GMAC MII/RGMII clock mux
+device sunxigmacclk
+attach sunxigmacclk at fdt with sunxi_gmacclk
+file   arch/arm/sunxi/sunxi_gmacclk.c          sunxi_gmacclk
+
 # Interrupt controller
 device sunxiintc: pic, pic_splfuncs
 attach sunxiintc at fdt with sunxi_intc
@@ -132,6 +137,10 @@
 attach sunxiemac at fdt with sunxi_emac
 file   arch/arm/sunxi/sunxi_emac.c             sunxi_emac
 
+# GMAC
+attach awge at fdt with sunxi_gmac
+file   arch/arm/sunxi/sunxi_gmac.c             sunxi_gmac
+
 # Timer
 device sunxitimer
 attach sunxitimer at fdt with sunxi_timer
diff -r 5217be62882e -r 57fc6d46e840 sys/arch/arm/sunxi/sunxi_gmac.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/sunxi/sunxi_gmac.c   Sat Oct 07 13:28:59 2017 +0000
@@ -0,0 +1,147 @@
+/* $NetBSD: sunxi_gmac.c,v 1.1 2017/10/07 13:28:59 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2017 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. 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: sunxi_gmac.c,v 1.1 2017/10/07 13:28:59 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+
+#include <net/if.h>
+#include <net/if_ether.h>
+#include <net/if_media.h>
+
+#include <dev/mii/miivar.h>
+
+#include <dev/ic/dwc_gmac_var.h>
+#include <dev/ic/dwc_gmac_reg.h>
+
+#include <dev/fdt/fdtvar.h>
+
+#define        GMAC_TX_RATE_MII                25000000
+#define        GMAC_TX_RATE_RGMII              125000000
+
+static const char * compatible[] = {
+       "allwinner,sun7i-a20-gmac",
+       NULL
+};
+
+static int
+sunxi_gmac_intr(void *arg)
+{
+       return dwc_gmac_intr(arg);
+}
+
+static int
+sunxi_gmac_match(device_t parent, cfdata_t cf, void *aux)
+{
+       struct fdt_attach_args * const faa = aux;
+
+       return of_match_compatible(faa->faa_phandle, compatible);
+}
+
+static void
+sunxi_gmac_attach(device_t parent, device_t self, void *aux)
+{
+       struct dwc_gmac_softc * const sc = device_private(self);
+       struct fdt_attach_args * const faa = aux;
+       const int phandle = faa->faa_phandle;
+       struct clk *clk_gmac, *clk_gmac_tx;
+       const char *phy_mode;
+       char intrstr[128];
+       bus_addr_t addr;
+       bus_size_t size;
+
+       if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
+               aprint_error(": couldn't get registers\n");
+               return;
+       }
+
+       sc->sc_dev = self;
+       sc->sc_bst = faa->faa_bst;
+       if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) {
+               aprint_error(": couldn't map registers\n");
+               return;
+       }
+       sc->sc_dmat = faa->faa_dmat;
+
+       if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
+               aprint_error(": failed to decode interrupt\n");
+               return;
+       }
+
+       clk_gmac = fdtbus_clock_get(phandle, "stmmaceth");
+       clk_gmac_tx = fdtbus_clock_get(phandle, "allwinner_gmac_tx");
+       if (clk_gmac == NULL || clk_gmac_tx == NULL) {
+               aprint_error(": couldn't get clocks\n");
+               return;
+       }
+
+       phy_mode = fdtbus_get_string(phandle, "phy-mode");
+       if (phy_mode == NULL) {
+               aprint_error(": missing 'phy-mode' property\n");
+               return;
+       }
+       if (strcmp(phy_mode, "mii") == 0) {
+               if (clk_set_rate(clk_gmac_tx, GMAC_TX_RATE_MII) != 0) {
+                       aprint_error(": failed to set TX clock rate (MII)\n");
+                       return;
+               }
+       } else if (strcmp(phy_mode, "rgmii") == 0) {
+               if (clk_set_rate(clk_gmac_tx, GMAC_TX_RATE_RGMII) != 0) {
+                       aprint_error(": failed to set TX clock rate (RGMII)\n");
+                       return;
+               }
+       } else {
+               aprint_error(": unsupported phy-mode '%s'\n", phy_mode);
+               return;
+       }
+
+       if (clk_enable(clk_gmac_tx) != 0 || clk_enable(clk_gmac) != 0) {
+               aprint_error(": couldn't enable clocks\n");
+               return;
+       }
+
+       aprint_naive("\n");
+       aprint_normal(": GMAC\n");
+
+       if (fdtbus_intr_establish(phandle, 0, IPL_NET, 0, sunxi_gmac_intr, sc) == NULL) {
+               aprint_error_dev(self, "failed to establish interrupt on %s\n", intrstr);
+               return;
+       }
+       aprint_normal_dev(self, "interrupting on %s\n", intrstr);
+
+       dwc_gmac_attach(sc, GMAC_MII_CLK_150_250M_DIV102);
+}
+
+CFATTACH_DECL_NEW(sunxi_gmac, sizeof(struct dwc_gmac_softc),
+       sunxi_gmac_match, sunxi_gmac_attach, NULL, NULL);
diff -r 5217be62882e -r 57fc6d46e840 sys/arch/arm/sunxi/sunxi_gmacclk.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/sunxi/sunxi_gmacclk.c        Sat Oct 07 13:28:59 2017 +0000
@@ -0,0 +1,211 @@
+/* $NetBSD: sunxi_gmacclk.c,v 1.1 2017/10/07 13:28:59 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2017 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. 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 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: sunxi_gmacclk.c,v 1.1 2017/10/07 13:28:59 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/kmem.h>
+#include <sys/bus.h>
+
+#include <dev/clk/clk_backend.h>
+
+#include <dev/fdt/fdtvar.h>
+
+#define        GMAC_CLK_PIT            __BIT(2)
+#define         GMAC_CLK_PIT_MII       0
+#define         GMAC_CLK_PIT_RGMII     1
+#define        GMAC_CLK_SRC            __BITS(1,0)
+#define         GMAC_CLK_SRC_MII       0
+#define         GMAC_CLK_SRC_EXT_RGMII 1
+#define         GMAC_CLK_SRC_RGMII     2
+
+static int     sunxi_gmacclk_match(device_t, cfdata_t, void *);
+static void    sunxi_gmacclk_attach(device_t, device_t, void *);
+
+static struct clk *sunxi_gmacclk_decode(device_t, const void *, size_t);
+
+static const struct fdtbus_clock_controller_func sunxi_gmacclk_fdt_funcs = {
+       .decode = sunxi_gmacclk_decode
+};
+
+static struct clk *sunxi_gmacclk_get(void *, const char *);
+static void    sunxi_gmacclk_put(void *, struct clk *);
+static int     sunxi_gmacclk_set_rate(void *, struct clk *, u_int);
+static u_int   sunxi_gmacclk_get_rate(void *, struct clk *);
+static struct clk *sunxi_gmacclk_get_parent(void *, struct clk *);
+
+static const struct clk_funcs sunxi_gmacclk_clk_funcs = {
+       .get = sunxi_gmacclk_get,
+       .put = sunxi_gmacclk_put,
+       .set_rate = sunxi_gmacclk_set_rate,
+       .get_rate = sunxi_gmacclk_get_rate,
+       .get_parent = sunxi_gmacclk_get_parent,
+};
+
+struct sunxi_gmacclk_softc {
+       device_t                sc_dev;
+       int                     sc_phandle;
+       bus_space_tag_t         sc_bst;
+       bus_space_handle_t      sc_bsh;
+
+       struct clk_domain       sc_clkdom;
+       struct clk              sc_clk;
+       struct clk              *sc_parent[2];
+};
+
+#define        RD4(sc, reg)                    \
+       bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg))
+#define        WR4(sc, reg, val)               \
+       bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val))
+
+CFATTACH_DECL_NEW(sunxi_gmacclk, sizeof(struct sunxi_gmacclk_softc),
+    sunxi_gmacclk_match, sunxi_gmacclk_attach, NULL, NULL);
+
+static int
+sunxi_gmacclk_match(device_t parent, cfdata_t cf, void *aux)
+{
+       const char * const compatible[] = { "allwinner,sun7i-a20-gmac-clk", NULL };
+       const struct fdt_attach_args *faa = aux;
+
+       return of_match_compatible(faa->faa_phandle, compatible);
+}
+
+static void
+sunxi_gmacclk_attach(device_t parent, device_t self, void *aux)
+{
+       struct sunxi_gmacclk_softc * const sc = device_private(self);
+       const struct fdt_attach_args *faa = aux;
+       const int phandle = faa->faa_phandle;
+       bus_addr_t addr;
+       bus_size_t size;
+
+       if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
+               aprint_error(": couldn't get registers\n");
+               return;
+       }



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