From: kremlin <ian@kremlin.cc>
Date: Sun, 12 Feb 2017 02:56:35 +0000 (-0600)
Subject: map DMA & queue controllers into amusbss' space and write _detach
X-Git-Url: https://uglyman.kremlin.cc/gitweb/gitweb.cgi?p=bbb-usb.git;a=commitdiff_plain;h=dceeb2f41b452a1c95f51ccd43429275639ed735

map DMA & queue controllers into amusbss' space and write _detach
---

diff --git a/src/sys/arch/armv7/omap/amusbss.c b/src/sys/arch/armv7/omap/amusbss.c
index d187967..67fade6 100644
--- a/src/sys/arch/armv7/omap/amusbss.c
+++ b/src/sys/arch/armv7/omap/amusbss.c
@@ -87,19 +87,26 @@ int amusbss_debug = 20;
 struct amusbss_softc {
 	struct device		sc_dev;
 	bus_space_tag_t		sc_iot;
+	void			*sc_ih;
+	bus_dma_tag_t		sc_dmat;
 	bus_space_handle_t	sc_ioh;
+	bus_size_t		sc_ios;
+	bus_space_handle_t	sc_ioh_dma_ctl;
+	bus_size_t		sc_ios_dma_ctl;
+	bus_space_handle_t	sc_ioh_dma_sched;
+	bus_size_t		sc_ios_dma_sched;
+	bus_space_handle_t	sc_ioh_queue;
+	bus_size_t		sc_ios_queue;
 };
 
-/* Needed in attaching ammusb devices via config_search(9) */
-extern struct cfattach ammusb_ca;
-//extern void simplebus_attach_node(struct device *, int);
-
 /* core decl */
 int  amusbss_match(struct device *, void *, void *);
 void amusbss_attach(struct device *, struct device *, void *);
 int  amusbss_detach(struct device *, int);
 void amusbss_reset(struct amusbss_softc *);
 
+void amusbss_map_dma(int);
+
 /* debug decl */
 void amusbss_preg(uint32_t, char *, struct amusbss_softc *);
 void amusbss_dumpregs(struct amusbss_softc *);
@@ -133,6 +140,8 @@ amusbss_attach(struct device *parent, struct device *self, void *args)
 	    &sc->sc_ioh))
 		panic("%s: bus_space_map failed!", __func__);
 
+	sc->sc_ios = faa->fa_reg[0].size;
+
 	/* Enable device clocks */
 	prcm_enablemodule(PRCM_USB);
 
@@ -151,14 +160,35 @@ amusbss_attach(struct device *parent, struct device *self, void *args)
 	rev = HREAD4(sc, USBSS_REVREG);
 	printf(": rev %d.%d\n", rev >> 4 &0xf, rev & 0xf);
 
-	/* Walk the OFW tree and attach top-level devices */
-	for (node = OF_child(faa->fa_node); node > 0; node = OF_peer(node))
-	    simplebus_attach_node(parent, node);
+	/* Walk FDT child nodes to attach ammusb devices, map DMA controllers */
+	for (node = OF_child(faa->fa_node); node > 0; node = OF_peer(node)) {
+	    if (OF_is_compatible(node, "ti,am3359-cppi41")) {
+		amusbss_map_dma(node);
+	    } else {
+		simplebus_attach_node(parent, node);
+	    }
+	}
 }
 
 int
 amusbss_detach(struct device *self, int flags)
 {
-	return 0; /* XXX */
+	struct amusbss_softc *sc = (struct amusbss_softc *) self;
+
+	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
+
+	if (sc->sc_ioh_dma_ctl)
+	    bus_space_unmap(sc->sc_iot, sc->sc_ioh_dma_ctl, sc->sc_ios_dma_ctl);
+	if (sc->sc_ioh_dma_sched)
+	    bus_space_unmap(sc->sc_iot, sc->sc_ioh_dma_sched, sc->sc_ios_dma_sched);
+	if (sc->sc_ioh_queue)
+	    bus_space_unmap(sc->sc_iot, sc->sc_ioh_queue, sc->sc_ios_queue);
+
+	return 0;
 }
 
+void
+amusbss_map_dma(int node)
+{
+	/* XXX TODO */
+}