On 02/04/2020 17:13, Gedare Bloom wrote:
> Maybe file a ticket against this for the future.
Problematic point is: I'm not sure when or if FreeBSD ever will have the
necessary functions. So that ticket would be a candidate for being open
forever.
>
> On Thu, Apr 2, 2020 at 8:43 AM Christian Mauderer
> <christian.maude...@embedded-brains.de> wrote:
>>
>> This is not a nice solution but it should work on all chips. As soon as
>> FreeBSD has a nice solution via the USB PHY driver, this should be
>> replaced.
>>
>> Update #3869.
>> ---
>> freebsd/sys/dev/usb/controller/ehci_imx.c | 59
>> +++++++++++++++++++++++++++++++
>> 1 file changed, 59 insertions(+)
>>
>> diff --git a/freebsd/sys/dev/usb/controller/ehci_imx.c
>> b/freebsd/sys/dev/usb/controller/ehci_imx.c
>> index d158df1d..544a63b5 100644
>> --- a/freebsd/sys/dev/usb/controller/ehci_imx.c
>> +++ b/freebsd/sys/dev/usb/controller/ehci_imx.c
>> @@ -50,6 +50,9 @@ __FBSDID("$FreeBSD$");
>>
>> #include <dev/ofw/ofw_bus.h>
>> #include <dev/ofw/ofw_bus_subr.h>
>> +#ifdef __rtems__
>> +#include <dev/fdt/fdt_common.h>
>> +#endif /* __rtems__ */
>>
>> #include <dev/usb/usb.h>
>> #include <dev/usb/usbdi.h>
>> @@ -270,6 +273,9 @@ struct imx_ehci_softc {
>> device_t dev;
>> struct resource *ehci_mem_res; /* EHCI core regs. */
>> struct resource *ehci_irq_res; /* EHCI core IRQ. */
>> +#ifdef __rtems__
>> + void *phy_regs;
>> +#endif /* __rtems__ */
>> };
>>
>> static struct ofw_compat_data compat_data[] = {
>> @@ -380,6 +386,32 @@ imx_ehci_disable_oc(struct imx_ehci_softc *sc)
>> index = usbmprops[1];
>> imx_usbmisc_set_ctrl(usbmdev, index, USBNC_OVER_CUR_DIS);
>> }
>> +#ifdef __rtems__
>> +#define BUS_SPACE_PHYSADDR(res, offs) \
>> + ((u_int)(rman_get_start(res)+(offs)))
>> +
>> +static uint16_t
>> +imx_ehci_get_port_speed_portsc(struct ehci_softc *sc, uint16_t index)
>> +{
>> + uint32_t v;
>> + struct imx_ehci_softc *isc = (struct imx_ehci_softc *)sc;
>> +
>> + v = ehci_get_port_speed_portsc(sc, index);
>> +
>> + /* Set/clear ENHOSTDISCONDETECT in USBPHY CTRL register */
>> + /* FIXME: This is a very hacky method. It should be done by the phy
>> + * driver instead. */
>> + volatile uint32_t *ctrl_set = isc->phy_regs + 0x34;
>> + volatile uint32_t *ctrl_clr = isc->phy_regs + 0x38;
>> + if (v == UPS_HIGH_SPEED) {
>> + *ctrl_set = 0x2;
>> + } else {
>> + *ctrl_clr = 0x2;
>> + }
>> +
>> + return (v);
>> +}
>> +#endif /* __rtems__ */
>>
>> static int
>> imx_ehci_attach(device_t dev)
>> @@ -474,6 +506,33 @@ imx_ehci_attach(device_t dev)
>> esc->sc_flags |= EHCI_SCFLG_NORESTERM | EHCI_SCFLG_TT;
>> esc->sc_vendor_post_reset = imx_ehci_post_reset;
>> esc->sc_vendor_get_port_speed = ehci_get_port_speed_portsc;
>> +#ifdef __rtems__
>> + /*
>> + * FIXME: This is a big hack to get the PHY regs and set one bit
>> during
>> + * changes of the port speed.
>> + */
>> + sc->phy_regs = 0;
>> + if (OF_hasprop(ofw_bus_get_node(sc->dev), "fsl,usbphy")) {
>> + phandle_t *cells;
>> + int len;
>> + phandle_t phynode;
>> +
>> + cells = NULL;
>> + len = OF_getencprop_alloc_multi(ofw_bus_get_node(sc->dev),
>> + "fsl,usbphy", sizeof(*cells), (void **)&cells);
>> + if (len > 0
>> + && (phynode = OF_node_from_xref(cells[0])) != -1 &&
>> + ofw_bus_node_is_compatible(phynode,
>> "fsl,imx6ul-usbphy")) {
>> + u_long base, size;
>> + if (fdt_regsize(phynode, &base, &size) == 0) {
>> + sc->phy_regs = (void*)base;
>> + esc->sc_vendor_get_port_speed =
>> + imx_ehci_get_port_speed_portsc;
>> + }
>> + }
>> + OF_prop_free(cells);
>> + }
>> +#endif /* __rtems__ */
>>
>> err = ehci_init(esc);
>> if (err != 0) {
>> --
>> 2.16.4
>>
>> _______________________________________________
>> devel mailing list
>> devel@rtems.org
>> http://lists.rtems.org/mailman/listinfo/devel
--
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