[src/trunk]: src/sys/arch/arm/sunxi Add support for A64 and H6, and register ...

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

details:   https://anonhg.NetBSD.org/src/rev/563c4f2bf17e
branches:  trunk
changeset: 838569:563c4f2bf17e
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Tue Jan 22 16:35:48 2019 +0000

description:
Add support for A64 and H6, and register self as a syscon

diffstat:

 sys/arch/arm/sunxi/sunxi_sramc.c |  65 +++++++++++++++++++++++++++++++++++++--
 1 files changed, 61 insertions(+), 4 deletions(-)

diffs (140 lines):

diff -r 67669a19fe0b -r 563c4f2bf17e sys/arch/arm/sunxi/sunxi_sramc.c
--- a/sys/arch/arm/sunxi/sunxi_sramc.c  Tue Jan 22 15:49:26 2019 +0000
+++ b/sys/arch/arm/sunxi/sunxi_sramc.c  Tue Jan 22 16:35:48 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: sunxi_sramc.c,v 1.1 2017/10/09 15:53:28 jmcneill Exp $ */
+/* $NetBSD: sunxi_sramc.c,v 1.2 2019/01/22 16:35:48 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sunxi_sramc.c,v 1.1 2017/10/09 15:53:28 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sunxi_sramc.c,v 1.2 2019/01/22 16:35:48 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -35,13 +35,17 @@
 #include <sys/intr.h>
 #include <sys/systm.h>
 #include <sys/kmem.h>
+#include <sys/mutex.h>
 
 #include <dev/fdt/fdtvar.h>
+#include <dev/fdt/syscon.h>
 
 #include <arm/sunxi/sunxi_sramc.h>
 
 static const char * compatible[] = {
        "allwinner,sun4i-a10-sram-controller",
+       "allwinner,sun50i-a64-system-control",
+       "allwinner,sun50i-h6-system-control",
        NULL
 };
 
@@ -50,13 +54,18 @@
        const char                      *desc;
        bus_size_t                      reg;
        uint32_t                        mask;
+       u_int                           flags;
+#define        SUNXI_SRAMC_F_SWAP              __BIT(0)
 } sunxi_sramc_areas[] = {
        { "allwinner,sun4i-a10-sram-a3-a4",
          "SRAM A3/A4",
-         0x04, __BITS(5,4) },
+         0x04, __BITS(5,4), 0 },
        { "allwinner,sun4i-a10-sram-d",
          "SRAM D",
-         0x04, __BIT(0) }
+         0x04, __BIT(0), 0 },
+       { "allwinner,sun50i-a64-sram-c",
+         "SRAM C",
+         0x04, __BIT(24), SUNXI_SRAMC_F_SWAP },
 };
 
 struct sunxi_sramc_node {
@@ -70,6 +79,8 @@
        int                             sc_phandle;
        bus_space_tag_t                 sc_bst;
        bus_space_handle_t              sc_bsh;
+       kmutex_t                        sc_lock;
+       struct syscon                   sc_syscon;
        TAILQ_HEAD(, sunxi_sramc_node)  sc_nodes;
 };
 
@@ -113,6 +124,42 @@
        }
 }
 
+static void
+sunxi_sramc_lock(void *priv)
+{
+       struct sunxi_sramc_softc * const sc = priv;
+
+       mutex_enter(&sc->sc_lock);
+}
+
+static void
+sunxi_sramc_unlock(void *priv)
+{
+       struct sunxi_sramc_softc * const sc = priv;
+
+       mutex_exit(&sc->sc_lock);
+}
+
+static uint32_t
+sunxi_sramc_read_4(void *priv, bus_size_t reg)
+{
+       struct sunxi_sramc_softc * const sc = priv;
+
+       KASSERT(mutex_owned(&sc->sc_lock));
+
+       return SRAMC_READ(sc, reg);
+}
+
+static void
+sunxi_sramc_write_4(void *priv, bus_size_t reg, uint32_t val)
+{
+       struct sunxi_sramc_softc * const sc = priv;
+
+       KASSERT(mutex_owned(&sc->sc_lock));
+
+       SRAMC_WRITE(sc, reg, val);
+}
+
 static int
 sunxi_sramc_match(device_t parent, cfdata_t cf, void *aux)
 {
@@ -142,6 +189,7 @@
                aprint_error(": couldn't map registers\n");
                return;
        }
+       mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_VM);
        TAILQ_INIT(&sc->sc_nodes);
 
        aprint_naive("\n");
@@ -151,6 +199,13 @@
 
        KASSERT(sramc_softc == NULL);
        sramc_softc = sc;
+
+       sc->sc_syscon.priv = sc;
+       sc->sc_syscon.lock = sunxi_sramc_lock;
+       sc->sc_syscon.unlock = sunxi_sramc_unlock;
+       sc->sc_syscon.read_4 = sunxi_sramc_read_4;
+       sc->sc_syscon.write_4 = sunxi_sramc_write_4;
+       fdtbus_register_syscon(self, phandle, &sc->sc_syscon);
 }
 
 CFATTACH_DECL_NEW(sunxi_sramc, sizeof(struct sunxi_sramc_softc),
@@ -170,6 +225,8 @@
                if (node->phandle == node_phandle) {
                        if (config > __SHIFTOUT_MASK(node->area->mask))
                                return ERANGE;
+                       if ((node->area->flags & SUNXI_SRAMC_F_SWAP) != 0)
+                               config = !config;
                        val = SRAMC_READ(sc, node->area->reg);
                        val &= ~node->area->mask;
                        val |= __SHIFTIN(config, node->area->mask);