/* $OpenBSD: imxahci.c,v 1.13 2021/10/24 17:52:27 mpi Exp $ */ /* * Copyright (c) 2013 Patrick Wildt * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include /* registers */ #define SATA_CAP 0x000 #define SATA_GHC 0x004 #define SATA_IS 0x008 #define SATA_PI 0x00C #define SATA_VS 0x010 #define SATA_CCC_CTL 0x014 #define SATA_CCC_PORTS 0x018 #define SATA_CAP2 0x024 #define SATA_BISTAFR 0x0A0 #define SATA_BISTCR 0x0A4 #define SATA_BISTFCTR 0x0A8 #define SATA_BSTSR 0x0AC #define SATA_OOBR 0x0BC #define SATA_GPCR 0x0D0 #define SATA_GPSR 0x0D4 #define SATA_TIMER1MS 0x0E0 #define SATA_TESTR 0x0F4 #define SATA_VERSIONR 0x0F8 #define SATA_P0CLB 0x100 #define SATA_P0FB 0x108 #define SATA_P0IS 0x110 #define SATA_P0IE 0x114 #define SATA_P0CMD 0x118 #define SATA_P0TFD 0x120 #define SATA_P0SIG 0x124 #define SATA_P0SSTS 0x128 #define SATA_P0SCTL 0x12C #define SATA_P0SERR 0x130 #define SATA_P0SACT 0x134 #define SATA_P0CI 0x138 #define SATA_P0SNTF 0x13C #define SATA_P0DMACR 0x170 #define SATA_P0PHYCR 0x178 #define SATA_P0PHYSR 0x17C #define SATA_CAP_SSS (1 << 27) #define SATA_GHC_HR (1 << 0) #define SATA_P0PHYCR_TEST_PDDQ (1 << 20) /* iomuxc */ #define IOMUXC_GPR13 0x034 #define IOMUXC_GPR13_SATA_PHY_1_TX_EDGE_RATE (1 << 0) #define IOMUXC_GPR13_SATA_PHY_1_MPLL_CLK_EN (1 << 1) #define IOMUXC_GPR13_SATA_PHY_2_1104V (0x11 << 2) #define IOMUXC_GPR13_SATA_PHY_3_333DB (0x00 << 7) #define IOMUXC_GPR13_SATA_PHY_4_9_16 (0x04 << 11) #define IOMUXC_GPR13_SATA_PHY_5_SS (0x01 << 14) #define IOMUXC_GPR13_SATA_SPEED_3G (0x01 << 15) #define IOMUXC_GPR13_SATA_PHY_6 (0x03 << 16) #define IOMUXC_GPR13_SATA_PHY_7_SATA2M (0x12 << 19) #define IOMUXC_GPR13_SATA_PHY_8_30DB (0x05 << 24) #define IOMUXC_GPR13_SATA_MASK 0x07FFFFFF int imxahci_match(struct device *, void *, void *); void imxahci_attach(struct device *, struct device *, void *); int imxahci_detach(struct device *, int); int imxahci_activate(struct device *, int); extern int ahci_intr(void *); struct imxahci_softc { struct ahci_softc sc; }; const struct cfattach imxahci_ca = { sizeof(struct imxahci_softc), imxahci_match, imxahci_attach, imxahci_detach, imxahci_activate }; struct cfdriver imxahci_cd = { NULL, "imxahci", DV_DULL }; int imxahci_match(struct device *parent, void *match, void *aux) { struct fdt_attach_args *faa = aux; return OF_is_compatible(faa->fa_node, "fsl,imx6q-ahci"); } void imxahci_attach(struct device *parent, struct device *self, void *aux) { struct imxahci_softc *imxsc = (struct imxahci_softc *) self; struct ahci_softc *sc = &imxsc->sc; struct fdt_attach_args *faa = aux; uint32_t timeout = 0x100000; struct regmap *rm; uint32_t reg; if (faa->fa_nreg < 1) return; sc->sc_iot = faa->fa_iot; sc->sc_ios = faa->fa_reg[0].size; sc->sc_dmat = faa->fa_dmat; if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr, faa->fa_reg[0].size, 0, &sc->sc_ioh)) panic("imxahci_attach: bus_space_map failed!"); sc->sc_ih = arm_intr_establish_fdt(faa->fa_node, IPL_BIO, ahci_intr, sc, sc->sc_dev.dv_xname); if (sc->sc_ih == NULL) { printf(": unable to establish interrupt\n"); goto unmap; } /* power it up */ clock_enable(faa->fa_node, "sata_ref"); clock_enable(faa->fa_node, "sata"); delay(100); /* power phy up */ rm = regmap_bycompatible("fsl,imx6q-iomuxc-gpr"); if (rm != NULL) { reg = regmap_read_4(rm, IOMUXC_GPR13); reg &= ~IOMUXC_GPR13_SATA_MASK; reg |= IOMUXC_GPR13_SATA_PHY_2_1104V | IOMUXC_GPR13_SATA_PHY_3_333DB | IOMUXC_GPR13_SATA_PHY_4_9_16 | IOMUXC_GPR13_SATA_SPEED_3G | IOMUXC_GPR13_SATA_PHY_6 | IOMUXC_GPR13_SATA_PHY_7_SATA2M | IOMUXC_GPR13_SATA_PHY_8_30DB; regmap_write_4(rm, IOMUXC_GPR13, reg); reg = regmap_read_4(rm, IOMUXC_GPR13); reg |= IOMUXC_GPR13_SATA_PHY_1_MPLL_CLK_EN; regmap_write_4(rm, IOMUXC_GPR13, reg); } /* setup */ bus_space_write_4(sc->sc_iot, sc->sc_ioh, SATA_P0PHYCR, bus_space_read_4(sc->sc_iot, sc->sc_ioh, SATA_P0PHYCR) & ~SATA_P0PHYCR_TEST_PDDQ); bus_space_write_4(sc->sc_iot, sc->sc_ioh, SATA_GHC, SATA_GHC_HR); while (!bus_space_read_4(sc->sc_iot, sc->sc_ioh, SATA_VERSIONR)); bus_space_write_4(sc->sc_iot, sc->sc_ioh, SATA_CAP, bus_space_read_4(sc->sc_iot, sc->sc_ioh, SATA_CAP) | SATA_CAP_SSS); bus_space_write_4(sc->sc_iot, sc->sc_ioh, SATA_PI, 1); bus_space_write_4(sc->sc_iot, sc->sc_ioh, SATA_TIMER1MS, clock_get_frequency(faa->fa_node, "ahb")); while (!(bus_space_read_4(sc->sc_iot, sc->sc_ioh, SATA_P0SSTS) & 0xF) && timeout--); printf(":"); if (ahci_attach(sc) != 0) { /* error printed by ahci_attach */ goto irq; } return; irq: arm_intr_disestablish(sc->sc_ih); unmap: bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); } int imxahci_detach(struct device *self, int flags) { struct imxahci_softc *imxsc = (struct imxahci_softc *) self; struct ahci_softc *sc = &imxsc->sc; ahci_detach(sc, flags); bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); return 0; } int imxahci_activate(struct device *self, int act) { struct imxahci_softc *imxsc = (struct imxahci_softc *) self; struct ahci_softc *sc = &imxsc->sc; return ahci_activate((struct device *)sc, act); }