/**
* omap_ehci_attach - driver entry point, sets up the ECHI controller/driver
* @dev: the new device handle
*
* Sets up bus spaces, interrupt handles, etc for the EHCI controller. It also
* parses the resource hints and calls omap_ehci_init() to initialise the
* H/W.
*
* LOCKING:
* none
*
* RETURNS:
* 0 on success or a positive error code on failure.
*/
static int
omap_ehci_attach(device_t dev)
{
struct omap_ehci_softc *isc = device_get_softc(dev);
ehci_softc_t *sc = &isc->base;
int err;
int rid;
/* initialise some bus fields */
sc->sc_bus.parent = dev;
sc->sc_bus.devices = sc->sc_devices;
sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
sc->sc_bus.dma_bits = 32;
sprintf(sc->sc_vendor, "Texas Instruments");
/* save the device */
isc->sc_dev = dev;
/* get all DMA memory */
if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(dev),
&ehci_iterate_hw_softc)) {
return (ENOMEM);
}
/* Allocate resource for the EHCI register set */
rid = 0;
sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (!sc->sc_io_res) {
device_printf(dev, "Error: Could not map EHCI memory\n");
goto error;
}
/* Request an interrupt resource */
rid = 0;
sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
if (sc->sc_irq_res == NULL) {
device_printf(dev, "Error: could not allocate irq\n");
goto error;
}
/* Add this device as a child of the USBus device */
sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
if (!sc->sc_bus.bdev) {
device_printf(dev, "Error: could not add USB device\n");
goto error;
}
device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
device_set_desc(sc->sc_bus.bdev, OMAP_EHCI_HC_DEVSTR);
/* Initialise the ECHI registers */
err = omap_ehci_init(isc);
if (err) {
device_printf(dev, "Error: could not setup OMAP EHCI, %d\n", err);
goto error;
}
/* Set the tag and size of the register set in the EHCI context */
sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
sc->sc_io_size = rman_get_size(sc->sc_io_res);
/* Setup the interrupt */
err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
if (err) {
device_printf(dev, "Error: could not setup irq, %d\n", err);
sc->sc_intr_hdl = NULL;
goto error;
}
/* Finally we are ready to kick off the ECHI host controller */
err = ehci_init(sc);
if (err == 0) {
err = device_probe_and_attach(sc->sc_bus.bdev);
}
if (err) {
device_printf(dev, "Error: USB init failed err=%d\n", err);
goto error;
}
return (0);
error:
omap_ehci_detach(dev);
return (ENXIO);
}
/**
* omap_ehci_attach - driver entry point, sets up the ECHI controller/driver
* @dev: the new device handle
*
* Sets up bus spaces, interrupt handles, etc for the EHCI controller. It also
* parses the resource hints and calls omap_ehci_init() to initialise the
* H/W.
*
* LOCKING:
* none
*
* RETURNS:
* 0 on success or a positive error code on failure.
*/
static int
omap_ehci_attach(device_t dev)
{
struct omap_ehci_softc *isc = device_get_softc(dev);
phandle_t node;
/* 3 ports with 3 cells per port */
pcell_t phyconf[3 * 3];
pcell_t *phyconf_ptr;
ehci_softc_t *sc = &isc->base;
int err;
int rid;
int len, tuple_size;
int i;
/* initialise some bus fields */
sc->sc_bus.parent = dev;
sc->sc_bus.devices = sc->sc_devices;
sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
/* save the device */
isc->sc_dev = dev;
/* get all DMA memory */
if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(dev),
&ehci_iterate_hw_softc)) {
return (ENOMEM);
}
/* When the EHCI driver is added to the tree it is expected that 3
* memory resources and 1 interrupt resource is assigned. The memory
* resources should be:
* 0 => EHCI register range
* 1 => UHH register range
* 2 => TLL register range
*
* The interrupt resource is just the single interupt for the controller.
*/
/* Allocate resource for the EHCI register set */
rid = 0;
sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (!sc->sc_io_res) {
device_printf(dev, "Error: Could not map EHCI memory\n");
goto error;
}
/* Request an interrupt resource */
rid = 0;
sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
if (sc->sc_irq_res == NULL) {
device_printf(dev, "Error: could not allocate irq\n");
goto error;
}
/* Allocate resource for the UHH register set */
rid = 1;
isc->uhh_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (!isc->uhh_mem_res) {
device_printf(dev, "Error: Could not map UHH memory\n");
goto error;
}
/* Allocate resource for the TLL register set */
rid = 2;
isc->tll_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (!isc->tll_mem_res) {
device_printf(dev, "Error: Could not map TLL memory\n");
goto error;
}
/* Add this device as a child of the USBus device */
sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
if (!sc->sc_bus.bdev) {
device_printf(dev, "Error: could not add USB device\n");
goto error;
}
device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
device_set_desc(sc->sc_bus.bdev, OMAP_EHCI_HC_DEVSTR);
/* Set the vendor name */
sprintf(sc->sc_vendor, "Texas Instruments");
/* Get the GPIO device, we may need this if the driver needs to toggle
* some pins for external PHY resets.
*/
isc->sc_gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
if (isc->sc_gpio_dev == NULL) {
device_printf(dev, "Error: failed to get the GPIO device\n");
goto error;
}
/* Set the defaults for the hints */
for (i = 0; i < 3; i++) {
isc->phy_reset[i] = 0;
isc->port_mode[i] = EHCI_HCD_OMAP_MODE_UNKNOWN;
isc->reset_gpio_pin[i] = -1;
}
tuple_size = sizeof(pcell_t) * 3;
node = ofw_bus_get_node(dev);
len = OF_getprop(node, "phy-config", phyconf, sizeof(phyconf));
if (len > 0) {
if (len % tuple_size)
goto error;
if ((len / tuple_size) != 3)
goto error;
phyconf_ptr = phyconf;
for (i = 0; i < 3; i++) {
isc->port_mode[i] = fdt32_to_cpu(*phyconf_ptr);
isc->phy_reset[i] = fdt32_to_cpu(*(phyconf_ptr + 1));
isc->reset_gpio_pin[i] = fdt32_to_cpu(*(phyconf_ptr + 2));
phyconf_ptr += 3;
}
}
/* Initialise the ECHI registers */
err = omap_ehci_init(isc);
if (err) {
device_printf(dev, "Error: could not setup OMAP EHCI, %d\n", err);
goto error;
}
/* Set the tag and size of the register set in the EHCI context */
sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
sc->sc_io_size = rman_get_size(sc->sc_io_res);
/* Setup the interrupt */
err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
if (err) {
device_printf(dev, "Error: could not setup irq, %d\n", err);
sc->sc_intr_hdl = NULL;
goto error;
}
/* Finally we are ready to kick off the ECHI host controller */
err = ehci_init(sc);
if (err == 0) {
err = device_probe_and_attach(sc->sc_bus.bdev);
}
if (err) {
device_printf(dev, "Error: USB init failed err=%d\n", err);
goto error;
}
return (0);
error:
omap_ehci_detach(dev);
return (ENXIO);
}
