tegra_sdhc.c revision 1.1.2.2
1 1.1.2.2 skrll /* $NetBSD: tegra_sdhc.c,v 1.1.2.2 2015/04/06 15:17:53 skrll Exp $ */ 2 1.1.2.2 skrll 3 1.1.2.2 skrll /*- 4 1.1.2.2 skrll * Copyright (c) 2015 Jared D. McNeill <jmcneill (at) invisible.ca> 5 1.1.2.2 skrll * All rights reserved. 6 1.1.2.2 skrll * 7 1.1.2.2 skrll * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 skrll * modification, are permitted provided that the following conditions 9 1.1.2.2 skrll * are met: 10 1.1.2.2 skrll * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 skrll * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 skrll * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 skrll * documentation and/or other materials provided with the distribution. 15 1.1.2.2 skrll * 16 1.1.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.1.2.2 skrll * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.1.2.2 skrll * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.1.2.2 skrll * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.1.2.2 skrll * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.1.2.2 skrll * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.1.2.2 skrll * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.1.2.2 skrll * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.1.2.2 skrll * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.1.2.2 skrll * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.1.2.2 skrll * SUCH DAMAGE. 27 1.1.2.2 skrll */ 28 1.1.2.2 skrll 29 1.1.2.2 skrll #include "locators.h" 30 1.1.2.2 skrll 31 1.1.2.2 skrll #include <sys/cdefs.h> 32 1.1.2.2 skrll __KERNEL_RCSID(0, "$NetBSD: tegra_sdhc.c,v 1.1.2.2 2015/04/06 15:17:53 skrll Exp $"); 33 1.1.2.2 skrll 34 1.1.2.2 skrll #include <sys/param.h> 35 1.1.2.2 skrll #include <sys/bus.h> 36 1.1.2.2 skrll #include <sys/device.h> 37 1.1.2.2 skrll #include <sys/intr.h> 38 1.1.2.2 skrll #include <sys/systm.h> 39 1.1.2.2 skrll #include <sys/kernel.h> 40 1.1.2.2 skrll 41 1.1.2.2 skrll #include <dev/sdmmc/sdhcreg.h> 42 1.1.2.2 skrll #include <dev/sdmmc/sdhcvar.h> 43 1.1.2.2 skrll #include <dev/sdmmc/sdmmcvar.h> 44 1.1.2.2 skrll 45 1.1.2.2 skrll #include <arm/nvidia/tegra_var.h> 46 1.1.2.2 skrll 47 1.1.2.2 skrll /* 8-bit eMMC is supported on SDMMC2 and SDMMC4 */ 48 1.1.2.2 skrll #define SDMMC_8BIT_P(port) ((port) == 1 || (port) == 3) 49 1.1.2.2 skrll 50 1.1.2.2 skrll static int tegra_sdhc_match(device_t, cfdata_t, void *); 51 1.1.2.2 skrll static void tegra_sdhc_attach(device_t, device_t, void *); 52 1.1.2.2 skrll 53 1.1.2.2 skrll static void tegra_sdhc_attach_i(device_t); 54 1.1.2.2 skrll 55 1.1.2.2 skrll struct tegra_sdhc_softc { 56 1.1.2.2 skrll struct sdhc_softc sc; 57 1.1.2.2 skrll 58 1.1.2.2 skrll bus_space_tag_t sc_bst; 59 1.1.2.2 skrll bus_space_handle_t sc_bsh; 60 1.1.2.2 skrll bus_size_t sc_bsz; 61 1.1.2.2 skrll struct sdhc_host *sc_host; 62 1.1.2.2 skrll void *sc_ih; 63 1.1.2.2 skrll }; 64 1.1.2.2 skrll 65 1.1.2.2 skrll CFATTACH_DECL_NEW(tegra_sdhc, sizeof(struct tegra_sdhc_softc), 66 1.1.2.2 skrll tegra_sdhc_match, tegra_sdhc_attach, NULL, NULL); 67 1.1.2.2 skrll 68 1.1.2.2 skrll static int 69 1.1.2.2 skrll tegra_sdhc_match(device_t parent, cfdata_t cf, void *aux) 70 1.1.2.2 skrll { 71 1.1.2.2 skrll return 1; 72 1.1.2.2 skrll } 73 1.1.2.2 skrll 74 1.1.2.2 skrll static void 75 1.1.2.2 skrll tegra_sdhc_attach(device_t parent, device_t self, void *aux) 76 1.1.2.2 skrll { 77 1.1.2.2 skrll struct tegra_sdhc_softc * const sc = device_private(self); 78 1.1.2.2 skrll struct tegraio_attach_args * const tio = aux; 79 1.1.2.2 skrll const struct tegra_locators * const loc = &tio->tio_loc; 80 1.1.2.2 skrll 81 1.1.2.2 skrll sc->sc.sc_dev = self; 82 1.1.2.2 skrll sc->sc.sc_dmat = tio->tio_dmat; 83 1.1.2.2 skrll sc->sc.sc_flags = SDHC_FLAG_32BIT_ACCESS | 84 1.1.2.2 skrll SDHC_FLAG_USE_DMA; 85 1.1.2.2 skrll if (SDMMC_8BIT_P(loc->loc_port)) { 86 1.1.2.2 skrll sc->sc.sc_flags |= SDHC_FLAG_8BIT_MODE; 87 1.1.2.2 skrll } 88 1.1.2.2 skrll sc->sc.sc_host = &sc->sc_host; 89 1.1.2.2 skrll 90 1.1.2.2 skrll sc->sc_bst = tio->tio_bst; 91 1.1.2.2 skrll bus_space_subregion(tio->tio_bst, tio->tio_bsh, 92 1.1.2.2 skrll loc->loc_offset, loc->loc_size, &sc->sc_bsh); 93 1.1.2.2 skrll sc->sc_bsz = loc->loc_size; 94 1.1.2.2 skrll 95 1.1.2.2 skrll #if notyet 96 1.1.2.2 skrll sc->sc.sc_clkbase = tegra_sdhc_get_freq(loc->loc_port) / 1000; 97 1.1.2.2 skrll #else 98 1.1.2.2 skrll sc->sc.sc_clkbase = 0; 99 1.1.2.2 skrll #endif 100 1.1.2.2 skrll 101 1.1.2.2 skrll aprint_naive("\n"); 102 1.1.2.2 skrll aprint_normal(": SDMMC%d\n", loc->loc_port + 1); 103 1.1.2.2 skrll 104 1.1.2.2 skrll if (sc->sc.sc_clkbase == 0) { 105 1.1.2.2 skrll aprint_error_dev(self, "couldn't determine frequency\n"); 106 1.1.2.2 skrll return; 107 1.1.2.2 skrll } 108 1.1.2.2 skrll 109 1.1.2.2 skrll sc->sc_ih = intr_establish(loc->loc_intr, IPL_SDMMC, IST_LEVEL, 110 1.1.2.2 skrll sdhc_intr, &sc->sc); 111 1.1.2.2 skrll if (sc->sc_ih == NULL) { 112 1.1.2.2 skrll aprint_error_dev(self, "couldn't establish interrupt %d\n", 113 1.1.2.2 skrll loc->loc_intr); 114 1.1.2.2 skrll return; 115 1.1.2.2 skrll } 116 1.1.2.2 skrll aprint_normal_dev(self, "interrupting on irq %d\n", loc->loc_intr); 117 1.1.2.2 skrll 118 1.1.2.2 skrll config_interrupts(self, tegra_sdhc_attach_i); 119 1.1.2.2 skrll } 120 1.1.2.2 skrll 121 1.1.2.2 skrll static void 122 1.1.2.2 skrll tegra_sdhc_attach_i(device_t self) 123 1.1.2.2 skrll { 124 1.1.2.2 skrll struct tegra_sdhc_softc * const sc = device_private(self); 125 1.1.2.2 skrll int error; 126 1.1.2.2 skrll 127 1.1.2.2 skrll error = sdhc_host_found(&sc->sc, sc->sc_bst, sc->sc_bsh, sc->sc_bsz); 128 1.1.2.2 skrll if (error) { 129 1.1.2.2 skrll aprint_error_dev(self, "couldn't initialize host, error = %d\n", 130 1.1.2.2 skrll error); 131 1.1.2.2 skrll intr_disestablish(sc->sc_ih); 132 1.1.2.2 skrll sc->sc_ih = NULL; 133 1.1.2.2 skrll return; 134 1.1.2.2 skrll } 135 1.1.2.2 skrll } 136
Indexes created Tue Oct 28 09:09:52 GMT 2025