1 /* $NetBSD: sunxi_sata.c,v 1.4 2021/01/27 03:10:20 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 31 __KERNEL_RCSID(0, "$NetBSD: sunxi_sata.c,v 1.4 2021/01/27 03:10:20 thorpej Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/bus.h> 35 #include <sys/device.h> 36 #include <sys/intr.h> 37 #include <sys/systm.h> 38 39 #include <dev/ata/atavar.h> 40 #include <dev/ic/ahcisatavar.h> 41 42 #include <dev/fdt/fdtvar.h> 43 44 static const struct device_compatible_entry compat_data[] = { 45 { .compat = "allwinner,sun4i-a10-ahci" }, 46 DEVICE_COMPAT_EOL 47 }; 48 49 #define SUNXI_SATA_DMACR(port) (0x170 + AHCI_P_OFFSET(port)) 50 51 static void 52 sunxi_sata_channel_start(struct ahci_softc *sc, struct ata_channel *chp) 53 { 54 const bus_size_t dma_reg = SUNXI_SATA_DMACR(chp->ch_channel); 55 uint32_t val; 56 57 val = AHCI_READ(sc, dma_reg); 58 val &= ~0xffff; 59 val |= 0x4433; 60 AHCI_WRITE(sc, dma_reg, val); 61 } 62 63 static int 64 sunxi_sata_match(device_t parent, cfdata_t cf, void *aux) 65 { 66 struct fdt_attach_args * const faa = aux; 67 68 return of_compatible_match(faa->faa_phandle, compat_data); 69 } 70 71 static void 72 sunxi_sata_attach(device_t parent, device_t self, void *aux) 73 { 74 struct ahci_softc * const sc = device_private(self); 75 struct fdt_attach_args * const faa = aux; 76 const int phandle = faa->faa_phandle; 77 char intrstr[128]; 78 struct clk *clk; 79 bus_addr_t addr; 80 bus_size_t size; 81 int i; 82 83 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 84 aprint_error(": couldn't get registers\n"); 85 return; 86 } 87 88 sc->sc_atac.atac_dev = self; 89 sc->sc_dmat = faa->faa_dmat; 90 sc->sc_ahcit = faa->faa_bst; 91 sc->sc_ahcis = size; 92 if (bus_space_map(sc->sc_ahcit, addr, size, 0, &sc->sc_ahcih) != 0) { 93 aprint_error(": couldn't map registers\n"); 94 return; 95 } 96 sc->sc_ahci_ports = 1; 97 sc->sc_ahci_quirks = AHCI_QUIRK_BADPMP; 98 sc->sc_save_init_data = true; 99 sc->sc_channel_start = sunxi_sata_channel_start; 100 101 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 102 aprint_error(": failed to decode interrupt\n"); 103 return; 104 } 105 106 for (i = 0; (clk = fdtbus_clock_get_index(phandle, i)) != NULL; i++) 107 if (clk_enable(clk) != 0) { 108 aprint_error(": couldn't enable clock #%d\n", i); 109 return; 110 } 111 112 aprint_naive("\n"); 113 aprint_normal(": SATA\n"); 114 115 if (fdtbus_intr_establish_xname(phandle, 0, IPL_BIO, 0, ahci_intr, 116 sc, device_xname(self)) == NULL) { 117 aprint_error_dev(self, "failed to establish interrupt on %s\n", intrstr); 118 return; 119 } 120 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 121 122 ahci_attach(sc); 123 } 124 125 CFATTACH_DECL_NEW(sunxi_sata, sizeof(struct ahci_softc), 126 sunxi_sata_match, sunxi_sata_attach, NULL, NULL); 127