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

[bbb-usb.git] / src / sys / arch / armv7 / omap / amusbss.c

diff --git a/src/sys/arch/armv7/omap/amusbss.c b/src/sys/arch/armv7/omap/amusbss.c
index 9d5abe665c3a06de380b5d97771bfc22f1bf8d6d..67fade6ee6d8dc064a1cca2fb70416f2e32ac64b 100644 (file)
--- a/src/sys/arch/armv7/omap/amusbss.c
+++ b/src/sys/arch/armv7/omap/amusbss.c
@@ -22,6 +22,8 @@
  * 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.
+ *
+ * USB subsystem driver for am335x. Derived from FreeBSD version.
  */
 
 #include <sys/param.h>
@@ -84,22 +86,32 @@ int amusbss_debug = 20;
 
 struct amusbss_softc {
        struct device           sc_dev;
-//     struct simplebus_softc  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;
 };
 
-/*  core decl */
+/* 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 *);
 
-/*  debug decl */
+void amusbss_map_dma(int);
+
+/* debug decl */
 void amusbss_preg(uint32_t, char *, struct amusbss_softc *);
 void amusbss_dumpregs(struct amusbss_softc *);
 
-/*  core/iomux.c def */
+/*  core/iomux.c defs */
 struct cfattach amusbss_ca = {
        sizeof (struct amusbss_softc), amusbss_match, amusbss_attach, amusbss_detach
 };
@@ -112,7 +124,6 @@ int
 amusbss_match(struct device *parent, void *v, void *aux)
 {
        struct fdt_attach_args *faa = aux;
-panic("its openbsd");
        return OF_is_compatible(faa->fa_node, "ti,am33xx-usb");
 }
 
@@ -121,18 +132,15 @@ amusbss_attach(struct device *parent, struct device *self, void *args)
 {
        struct amusbss_softc    *sc = (struct amusbss_softc *) self;
        struct fdt_attach_args  *faa = args;
-
        int i, node;
        uint32_t rev;
 
-//     struct fdt_attach_args
-//     char *name
-
        sc->sc_iot = faa->fa_iot;
        if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, faa->fa_reg[0].size, 0,
            &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);
@@ -152,15 +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 */
+       /* 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 */
+}