1 /* $OpenBSD: mvahci.c,v 1.1 2017/03/24 20:31:58 patrick Exp $ */ 2 /* 3 * Copyright (c) 2013,2017 Patrick Wildt <patrick@blueri.se> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/types.h> 19 #include <sys/systm.h> 20 #include <sys/device.h> 21 #include <sys/mutex.h> 22 23 #include <machine/bus.h> 24 #include <machine/fdt.h> 25 26 #include <armv7/marvell/mvmbusvar.h> 27 28 #include <dev/ic/ahcireg.h> 29 #include <dev/ic/ahcivar.h> 30 31 #include <dev/ofw/openfirm.h> 32 #include <dev/ofw/ofw_clock.h> 33 #include <dev/ofw/fdt.h> 34 35 #define MVAHCI_READ(sc, reg) \ 36 bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg)) 37 #define MVAHCI_WRITE(sc, reg, val) \ 38 bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val)) 39 40 #define MVAHCI_NWINDOW 4 41 #define MVAHCI_WINDOW_CTRL(x) (0x60 + ((x) << 4)) 42 #define MVAHCI_WINDOW_BASE(x) (0x64 + ((x) << 4)) 43 #define MVAHCI_WINDOW_SIZE(x) (0x68 + ((x) << 4)) 44 45 #define MVAHCI_TARGET(target) (((target) & 0xf) << 4) 46 #define MVAHCI_ATTR(attr) (((attr) & 0xff) << 8) 47 #define MVAHCI_BASEADDR(base) ((base) >> 16) 48 #define MVAHCI_SIZE(size) (((size) - 1) & 0xffff0000) 49 #define MVAHCI_WINEN (1 << 0) 50 51 void mvahci_wininit(struct ahci_softc *); 52 53 int mvahci_match(struct device *, void *, void *); 54 void mvahci_attach(struct device *, struct device *, void *); 55 int mvahci_detach(struct device *, int); 56 int mvahci_activate(struct device *, int); 57 58 extern int ahci_intr(void *); 59 60 struct cfattach mvahci_ca = { 61 sizeof(struct ahci_softc), 62 mvahci_match, 63 mvahci_attach, 64 mvahci_detach, 65 mvahci_activate 66 }; 67 68 struct cfdriver mvahci_cd = { 69 NULL, "mvahci", DV_DULL 70 }; 71 72 void 73 mvahci_wininit(struct ahci_softc *sc) 74 { 75 int i; 76 77 if (mvmbus_dram_info == NULL) 78 panic("%s: mbus dram information not set up", __func__); 79 80 for (i = 0; i < MVAHCI_NWINDOW; i++) { 81 MVAHCI_WRITE(sc, MVAHCI_WINDOW_CTRL(i), 0); 82 MVAHCI_WRITE(sc, MVAHCI_WINDOW_BASE(i), 0); 83 MVAHCI_WRITE(sc, MVAHCI_WINDOW_SIZE(i), 0); 84 } 85 86 for (i = 0; i < mvmbus_dram_info->numcs; i++) { 87 struct mbus_dram_window *win = &mvmbus_dram_info->cs[i]; 88 89 MVAHCI_WRITE(sc, MVAHCI_WINDOW_CTRL(i), 90 MVAHCI_WINEN | 91 MVAHCI_TARGET(mvmbus_dram_info->targetid) | 92 MVAHCI_ATTR(win->attr)); 93 MVAHCI_WRITE(sc, MVAHCI_WINDOW_BASE(i), 94 MVAHCI_BASEADDR(win->base)); 95 MVAHCI_WRITE(sc, MVAHCI_WINDOW_SIZE(i), 96 MVAHCI_SIZE(win->size)); 97 } 98 } 99 100 int 101 mvahci_match(struct device *parent, void *match, void *aux) 102 { 103 struct fdt_attach_args *faa = aux; 104 105 return OF_is_compatible(faa->fa_node, "marvell,armada-380-ahci"); 106 } 107 108 void 109 mvahci_attach(struct device *parent, struct device *self, void *aux) 110 { 111 struct ahci_softc *sc = (struct ahci_softc *)self; 112 struct fdt_attach_args *faa = aux; 113 114 if (faa->fa_nreg < 1) 115 return; 116 117 sc->sc_iot = faa->fa_iot; 118 sc->sc_ios = faa->fa_reg[0].size; 119 sc->sc_dmat = faa->fa_dmat; 120 121 if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, 122 faa->fa_reg[0].size, 0, &sc->sc_ioh)) 123 panic("mvahci_attach: bus_space_map failed!"); 124 125 clock_enable_all(faa->fa_node); 126 reset_deassert_all(faa->fa_node); 127 128 sc->sc_ih = arm_intr_establish_fdt(faa->fa_node, IPL_BIO, 129 ahci_intr, sc, sc->sc_dev.dv_xname); 130 if (sc->sc_ih == NULL) { 131 printf(": unable to establish interrupt\n"); 132 goto unmap; 133 } 134 135 /* Set up MBUS windows. */ 136 mvahci_wininit(sc); 137 138 printf(":"); 139 140 if (ahci_attach(sc) != 0) { 141 /* error printed by ahci_attach */ 142 goto irq; 143 } 144 145 return; 146 irq: 147 arm_intr_disestablish_fdt(sc->sc_ih); 148 unmap: 149 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); 150 } 151 152 int 153 mvahci_detach(struct device *self, int flags) 154 { 155 struct ahci_softc *sc = (struct ahci_softc *)self; 156 157 ahci_detach(sc, flags); 158 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); 159 return 0; 160 } 161 162 int 163 mvahci_activate(struct device *self, int act) 164 { 165 struct ahci_softc *sc = (struct ahci_softc *)self; 166 167 return ahci_activate((struct device *)sc, act); 168 } 169