/*- * Copyright (c) 2012 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Matt Thomas of 3am Software Foundry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "locators.h" #include __KERNEL_RCSID(1, "$NetBSD: awin_ahcisata.c,v 1.11 2014/02/24 16:40:29 matt Exp $"); #include #include #include #include #include #include #include #include #include static int awin_ahci_match(device_t, cfdata_t, void *); static void awin_ahci_attach(device_t, device_t, void *); struct awin_ahci_softc { struct ahci_softc asc_sc; struct awin_gpio_pindata asc_gpio_pin; void *asc_ih; }; CFATTACH_DECL_NEW(awin_ahcisata, sizeof(struct awin_ahci_softc), awin_ahci_match, awin_ahci_attach, NULL, NULL); static int awin_ahci_match(device_t parent, cfdata_t cf, void *aux) { struct awinio_attach_args * const aio = aux; const struct awin_locators * const loc = &aio->aio_loc; const int port = cf->cf_loc[AWINIOCF_PORT]; if (strcmp(cf->cf_name, loc->loc_name)) return 0; if (port != AWINIOCF_PORT_DEFAULT && port != loc->loc_port) return 0; return 1; } static void awin_ahci_phy_init(struct awin_ahci_softc *asc) { bus_space_tag_t bst = asc->asc_sc.sc_ahcit; bus_space_handle_t bsh = asc->asc_sc.sc_ahcih; u_int timeout; uint32_t v; /* * This is dark magic. */ delay(5000); bus_space_write_4(bst, bsh, AWIN_AHCI_RWCR_REG, 0); awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS1R_REG, __BIT(19), 0); awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS0R_REG, __BIT(26)|__BIT(24)|__BIT(23)|__BIT(18), __BIT(25)); awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS1R_REG, __BIT(17)|__BIT(10)|__BIT(9)|__BIT(7), __BIT(16)|__BIT(12)|__BIT(11)|__BIT(8)|__BIT(6)); awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS1R_REG, __BIT(28)|__BIT(15), 0); awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS1R_REG, 0, __BIT(19)); awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS0R_REG, __BIT(21)|__BIT(20), __BIT(22)); awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS2R_REG, __BIT(9)|__BIT(8)|__BIT(5), __BIT(7)|__BIT(6)); delay(10); awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS0R_REG, __BIT(19), 0); timeout = 1000; do { delay(1); v = bus_space_read_4(bst, bsh, AWIN_AHCI_PHYCS0R_REG); } while (--timeout && __SHIFTOUT(v, __BITS(30,28)) != 2); if (!timeout) { aprint_error_dev( asc->asc_sc.sc_atac.atac_dev, "SATA PHY power failed (%#x)\n", v); } else { awin_reg_set_clear(bst, bsh, AWIN_AHCI_PHYCS2R_REG, __BIT(24), 0); timeout = 1000; do { delay(10); v = bus_space_read_4(bst, bsh, AWIN_AHCI_PHYCS2R_REG); } while (--timeout && (v & __BIT(24))); if (!timeout) { aprint_error_dev( asc->asc_sc.sc_atac.atac_dev, "SATA PHY calibration failed (%#x)\n", v); } } delay(10); bus_space_write_4(bst, bsh, AWIN_AHCI_RWCR_REG, 7); } static void awin_ahci_enable(bus_space_tag_t bst, bus_space_handle_t bsh) { /* * SATA needs PLL6 to be a 100MHz clock. */ awin_pll6_enable(); /* * Make sure it's enabled for the AHB. */ awin_reg_set_clear(bst, bsh, AWIN_AHB_GATING0_REG, AWIN_AHB_GATING0_SATA, 0); delay(1000); /* * Now turn it on (forcing it to use PLL6). */ bus_space_write_4(bst, bsh, AWIN_SATA_CLK_REG, AWIN_CLK_ENABLE); } static void awin_ahci_channel_start(struct ahci_softc *sc, struct ata_channel *chp) { bus_size_t dma_reg = AHCI_P_AWIN_DMA(chp->ch_channel); uint32_t dma = AHCI_READ(sc, dma_reg); dma &= ~0xff00; dma |= 0x4400; AHCI_WRITE(sc, dma_reg, dma); } static void awin_ahci_attach(device_t parent, device_t self, void *aux) { struct awin_ahci_softc * const asc = device_private(self); struct ahci_softc * const sc = &asc->asc_sc; struct awinio_attach_args * const aio = aux; const struct awin_locators * const loc = &aio->aio_loc; awin_ahci_enable(aio->aio_core_bst, aio->aio_ccm_bsh); sc->sc_atac.atac_dev = self; sc->sc_dmat = aio->aio_dmat; sc->sc_ahcit = aio->aio_core_bst; sc->sc_ahcis = loc->loc_size; sc->sc_ahci_ports = 1; sc->sc_ahci_quirks = AHCI_QUIRK_BADPMP; sc->sc_save_init_data = true; sc->sc_channel_start = awin_ahci_channel_start; bus_space_subregion(aio->aio_core_bst, aio->aio_core_bsh, loc->loc_offset, loc->loc_size, &sc->sc_ahcih); aprint_naive(": AHCI SATA controller\n"); aprint_normal(": AHCI SATA controller\n"); /* * Bring up the PHY. */ awin_ahci_phy_init(asc); /* * If there is a GPIO to turn on power, do it now. */ const char *pin_name; prop_dictionary_t dict = device_properties(self); if (prop_dictionary_get_cstring_nocopy(dict, "power-gpio", &pin_name)) { if (awin_gpio_pin_reserve(pin_name, &asc->asc_gpio_pin)) { awin_gpio_pindata_write(&asc->asc_gpio_pin, 1); } else { aprint_error_dev(self, "failed to reserve GPIO \"%s\"\n", pin_name); } } /* * Establish the interrupt */ asc->asc_ih = intr_establish(loc->loc_intr, IPL_BIO, IST_LEVEL, ahci_intr, sc); if (asc->asc_ih == NULL) { aprint_error_dev(self, "failed to establish interrupt %d\n", loc->loc_intr); goto fail; } aprint_normal_dev(self, "interrupting on irq %d\n", loc->loc_intr); ahci_attach(sc); return; fail: if (asc->asc_ih) { intr_disestablish(asc->asc_ih); asc->asc_ih = NULL; } }