| 1 | /* |
| 2 | * Copyright (c) 2017 Ian Sutton <ian@ce.gl> |
| 3 | * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@freebsd.org> |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 24 | * SUCH DAMAGE. |
| 25 | */ |
| 26 | |
| 27 | #include <sys/param.h> |
| 28 | #include <sys/systm.h> |
| 29 | #include <sys/device.h> |
| 30 | #include <sys/kernel.h> |
| 31 | |
| 32 | #include <dev/ofw/openfirm.h> |
| 33 | #include <dev/ofw/fdt.h> |
| 34 | |
| 35 | #include <machine/fdt.h> |
| 36 | |
| 37 | #include <arm/simplebus/simplebusvar.h> |
| 38 | |
| 39 | #include <armv7/omap/prcmvar.h> |
| 40 | |
| 41 | #define DEVNAME(_s) ((_s)->sc_dev.dv_xname) |
| 42 | |
| 43 | #define AMUSBSS_DEBUG /* XXX */ |
| 44 | |
| 45 | #ifdef AMUSBSS_DEBUG |
| 46 | int amusbss_debug = 20; |
| 47 | #define DPRINTF(n,s) do { if ((n) <= amusbss_debug) printf s; } while (0) |
| 48 | #else |
| 49 | #define DPRINTF(n,s) do {} |
| 50 | #endif |
| 51 | |
| 52 | #define HREAD4(sc, reg) \ |
| 53 | (bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg))) |
| 54 | #define HWRITE4(sc, reg, val) \ |
| 55 | bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val)) |
| 56 | #define HSET4(sc, reg, bits) \ |
| 57 | HWRITE4((sc), (reg), HREAD4((sc), (reg)) | (bits)) |
| 58 | #define HCLR4(sc, reg, bits) \ |
| 59 | HWRITE4((sc), (reg), HREAD4((sc), (reg)) & ~(bits)) |
| 60 | |
| 61 | #define USBSS_REVREG 0x00 |
| 62 | #define USBSS_SYSCONFIG 0x10 |
| 63 | #define USBSS_SYSCONFIG_SRESET 1 |
| 64 | |
| 65 | #define USBCTRL_REV 0x00 |
| 66 | #define USBCTRL_CTRL 0x14 |
| 67 | #define USBCTRL_STAT 0x18 |
| 68 | #define USBCTRL_IRQ_STAT0 0x30 |
| 69 | #define IRQ_STAT0_RXSHIFT 16 |
| 70 | #define IRQ_STAT0_TXSHIFT 0 |
| 71 | #define USBCTRL_IRQ_STAT1 0x34 |
| 72 | #define IRQ_STAT1_DRVVBUS (1 << 8) |
| 73 | #define USBCTRL_INTEN_SET0 0x38 |
| 74 | #define USBCTRL_INTEN_SET1 0x3C |
| 75 | #define USBCTRL_INTEN_USB_ALL 0x1ff |
| 76 | #define USBCTRL_INTEN_USB_SOF (1 << 3) |
| 77 | #define USBCTRL_INTEN_CLR0 0x40 |
| 78 | #define USBCTRL_INTEN_CLR1 0x44 |
| 79 | #define USBCTRL_UTMI 0xE0 |
| 80 | #define USBCTRL_UTMI_FSDATAEXT (1 << 1) |
| 81 | #define USBCTRL_MODE 0xE8 |
| 82 | #define USBCTRL_MODE_IDDIG (1 << 8) |
| 83 | #define USBCTRL_MODE_IDDIGMUX (1 << 7) |
| 84 | |
| 85 | struct amusbss_softc { |
| 86 | struct device sc_dev; |
| 87 | // struct simplebus_softc sc_dev; |
| 88 | bus_space_tag_t sc_iot; |
| 89 | bus_space_handle_t sc_ioh; |
| 90 | }; |
| 91 | |
| 92 | /* core decl */ |
| 93 | int amusbss_match(struct device *, void *, void *); |
| 94 | void amusbss_attach(struct device *, struct device *, void *); |
| 95 | int amusbss_detach(struct device *, int); |
| 96 | void amusbss_reset(struct amusbss_softc *); |
| 97 | |
| 98 | /* debug decl */ |
| 99 | void amusbss_preg(uint32_t, char *, struct amusbss_softc *); |
| 100 | void amusbss_dumpregs(struct amusbss_softc *); |
| 101 | |
| 102 | /* core/iomux.c def */ |
| 103 | struct cfattach amusbss_ca = { |
| 104 | sizeof (struct amusbss_softc), amusbss_match, amusbss_attach, amusbss_detach |
| 105 | }; |
| 106 | |
| 107 | struct cfdriver amusbss_cd = { |
| 108 | NULL, "amusbss", DV_DULL |
| 109 | }; |
| 110 | |
| 111 | int |
| 112 | amusbss_match(struct device *parent, void *v, void *aux) |
| 113 | { |
| 114 | struct fdt_attach_args *faa = aux; |
| 115 | panic("its openbsd"); |
| 116 | return OF_is_compatible(faa->fa_node, "ti,am33xx-usb"); |
| 117 | } |
| 118 | |
| 119 | void |
| 120 | amusbss_attach(struct device *parent, struct device *self, void *args) |
| 121 | { |
| 122 | struct amusbss_softc *sc = (struct amusbss_softc *) self; |
| 123 | struct fdt_attach_args *faa = args; |
| 124 | |
| 125 | int i, node; |
| 126 | uint32_t rev; |
| 127 | |
| 128 | // struct fdt_attach_args |
| 129 | // char *name |
| 130 | |
| 131 | sc->sc_iot = faa->fa_iot; |
| 132 | if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, faa->fa_reg[0].size, 0, |
| 133 | &sc->sc_ioh)) |
| 134 | panic("%s: bus_space_map failed!", __func__); |
| 135 | |
| 136 | |
| 137 | /* Enable device clocks */ |
| 138 | prcm_enablemodule(PRCM_USB); |
| 139 | |
| 140 | /* Reset USB subsystem, USB0 and USB1 */ |
| 141 | HWRITE4(sc, USBSS_SYSCONFIG, USBSS_SYSCONFIG_SRESET); |
| 142 | delay(100); |
| 143 | i = 10; |
| 144 | while (HREAD4(sc, USBSS_SYSCONFIG) & USBSS_SYSCONFIG_SRESET) { |
| 145 | delay(100); |
| 146 | if (i-- == 0) { |
| 147 | printf(": reset timeout.\n"); |
| 148 | return; |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | rev = HREAD4(sc, USBSS_REVREG); |
| 153 | printf(": rev %d.%d\n", rev >> 4 &0xf, rev & 0xf); |
| 154 | |
| 155 | /* Walk the OFW tree and attach top-level devices */ |
| 156 | for (node = OF_child(faa->fa_node); node > 0; node = OF_peer(node)) { |
| 157 | |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | int |
| 162 | amusbss_detach(struct device *self, int flags) |
| 163 | { |
| 164 | return 0; /* XXX */ |
| 165 | } |
| 166 | |