[src/trunk]: src/sys/arch/arm/sunxi Add support for new emac bindings

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

details:   https://anonhg.NetBSD.org/src/rev/8ccf4066c5b5
branches:  trunk
changeset: 357875:8ccf4066c5b5
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Thu Nov 30 21:36:11 2017 +0000

description:
Add support for new emac bindings

diffstat:

 sys/arch/arm/sunxi/sunxi_emac.c |  88 +++++++++++++++++++++++++++++-----------
 1 files changed, 63 insertions(+), 25 deletions(-)

diffs (134 lines):

diff -r 0e04559e4f90 -r 8ccf4066c5b5 sys/arch/arm/sunxi/sunxi_emac.c
--- a/sys/arch/arm/sunxi/sunxi_emac.c   Thu Nov 30 20:41:21 2017 +0000
+++ b/sys/arch/arm/sunxi/sunxi_emac.c   Thu Nov 30 21:36:11 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: sunxi_emac.c,v 1.9 2017/11/16 03:07:17 ozaki-r Exp $ */
+/* $NetBSD: sunxi_emac.c,v 1.10 2017/11/30 21:36:11 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2016-2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -33,7 +33,7 @@
 #include "opt_net_mpsafe.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sunxi_emac.c,v 1.9 2017/11/16 03:07:17 ozaki-r Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sunxi_emac.c,v 1.10 2017/11/30 21:36:11 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -97,23 +97,24 @@
 #define        PAUSE_TIME_DEFAULT      0x400
 
 /* syscon EMAC clock register */
-#define        EMAC_CLK_EPHY_ADDR      (0x1f << 20)    /* H3 */
-#define        EMAC_CLK_EPHY_ADDR_SHIFT 20
-#define        EMAC_CLK_EPHY_LED_POL   (1 << 17)       /* H3 */
-#define        EMAC_CLK_EPHY_SHUTDOWN  (1 << 16)       /* H3 */
-#define        EMAC_CLK_EPHY_SELECT    (1 << 15)       /* H3 */
-#define        EMAC_CLK_RMII_EN        (1 << 13)
-#define        EMAC_CLK_ETXDC          (0x7 << 10)
-#define        EMAC_CLK_ETXDC_SHIFT    10
-#define        EMAC_CLK_ERXDC          (0x1f << 5)
-#define        EMAC_CLK_ERXDC_SHIFT    5
-#define        EMAC_CLK_PIT            (0x1 << 2)
-#define         EMAC_CLK_PIT_MII       (0 << 2)
-#define         EMAC_CLK_PIT_RGMII     (1 << 2)
-#define        EMAC_CLK_SRC            (0x3 << 0)
-#define         EMAC_CLK_SRC_MII       (0 << 0)
-#define         EMAC_CLK_SRC_EXT_RGMII (1 << 0)
-#define         EMAC_CLK_SRC_RGMII     (2 << 0)
+#define        EMAC_CLK_REG            0x30
+#define         EMAC_CLK_EPHY_ADDR             (0x1f << 20)    /* H3 */
+#define         EMAC_CLK_EPHY_ADDR_SHIFT       20
+#define         EMAC_CLK_EPHY_LED_POL          (1 << 17)       /* H3 */
+#define         EMAC_CLK_EPHY_SHUTDOWN         (1 << 16)       /* H3 */
+#define         EMAC_CLK_EPHY_SELECT           (1 << 15)       /* H3 */
+#define         EMAC_CLK_RMII_EN               (1 << 13)
+#define         EMAC_CLK_ETXDC                 (0x7 << 10)
+#define         EMAC_CLK_ETXDC_SHIFT           10
+#define         EMAC_CLK_ERXDC                 (0x1f << 5)
+#define         EMAC_CLK_ERXDC_SHIFT           5
+#define         EMAC_CLK_PIT                   (0x1 << 2)
+#define          EMAC_CLK_PIT_MII              (0 << 2)
+#define          EMAC_CLK_PIT_RGMII            (1 << 2)
+#define         EMAC_CLK_SRC                   (0x3 << 0)
+#define          EMAC_CLK_SRC_MII              (0 << 0)
+#define          EMAC_CLK_SRC_EXT_RGMII        (1 << 0)
+#define          EMAC_CLK_SRC_RGMII            (2 << 0)
 
 /* Burst length of RX and TX DMA transfers */
 static int sunxi_emac_burst_len = BURST_LEN_DEFAULT;
@@ -889,6 +890,27 @@
        return error;
 }
 
+static bool
+sunxi_emac_has_internal_phy(struct sunxi_emac_softc *sc)
+{
+       const char * mdio_internal_compat[] = {
+               "allwinner,sun8i-h3-mdio-internal",
+               NULL
+       };
+       int phy;
+
+       /* Non-standard property, for compatible with old dts files */
+       if (of_hasprop(sc->phandle, "allwinner,use-internal-phy"))
+               return true;
+
+       phy = fdtbus_get_phandle(sc->phandle, "phy-handle");
+       if (phy == -1)
+               return false;
+
+       /* For internal PHY, check compatible string of parent node */
+       return of_compatible(OF_parent(phy), mdio_internal_compat) >= 0;
+}
+
 static int
 sunxi_emac_setup_phy(struct sunxi_emac_softc *sc)
 {
@@ -921,7 +943,7 @@
        }
 
        if (sc->type == EMAC_H3) {
-               if (of_hasprop(sc->phandle, "allwinner,use-internal-phy")) {
+               if (sunxi_emac_has_internal_phy(sc)) {
                        reg |= EMAC_CLK_EPHY_SELECT;
                        reg &= ~EMAC_CLK_EPHY_SHUTDOWN;
                        if (of_hasprop(sc->phandle,
@@ -1262,15 +1284,31 @@
 {
        const int phandle = sc->phandle;
        bus_addr_t addr, size;
-       u_int n;
+
+       /* Map EMAC registers */
+       if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0)
+               return ENXIO;
+       if (bus_space_map(sc->bst, addr, size, 0, &sc->bsh[_RES_EMAC]) != 0)
+               return ENXIO;
 
-       /* Map registers */
-       for (n = 0; n < _RES_NITEMS; n++) {
-               if (fdtbus_get_reg(phandle, n, &addr, &size) != 0)
+       /* Map SYSCON registers */
+       if (of_hasprop(phandle, "syscon")) {
+               const int syscon_phandle = fdtbus_get_phandle(phandle,
+                   "syscon");
+               if (syscon_phandle == -1)
                        return ENXIO;
-               if (bus_space_map(sc->bst, addr, size, 0, &sc->bsh[n]) != 0)
+               if (fdtbus_get_reg(syscon_phandle, 0, &addr, &size) != 0)
+                       return ENXIO;
+               if (size < EMAC_CLK_REG + 4)
+                       return ENXIO;
+               addr += EMAC_CLK_REG;
+               size -= EMAC_CLK_REG;
+       } else {
+               if (fdtbus_get_reg(phandle, 1, &addr, &size) != 0)
                        return ENXIO;
        }
+       if (bus_space_map(sc->bst, addr, size, 0, &sc->bsh[_RES_SYSCON]) != 0)
+               return ENXIO;
 
        /* Get clocks and resets. "ahb" is required, "ephy" is optional. */