/* $NetBSD: epsoc.c,v 1.13 2012/11/12 18:00:36 skrll Exp $ */ /* * Copyright (c) 2004 Jesse Off * All rights reserved. * * 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 __KERNEL_RCSID(0, "$NetBSD: epsoc.c,v 1.13 2012/11/12 18:00:36 skrll Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" static int epsoc_match(device_t, cfdata_t, void *); static void epsoc_attach(device_t, device_t, void *); static int epsoc_search(device_t, cfdata_t, const int *, void *); static int epsoc_print(void *, const char *); static int epsoc_submatch(device_t, cfdata_t, const int *, void *); CFATTACH_DECL_NEW(epsoc, sizeof(struct epsoc_softc), epsoc_match, epsoc_attach, NULL, NULL); struct epsoc_softc *epsoc_sc = NULL; static int epsoc_match(device_t parent, cfdata_t match, void *aux) { bus_space_handle_t ioh; uint32_t id, ret = 0; bus_space_map(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_SYSCON, EP93XX_APB_SYSCON_SIZE, 0, &ioh); id = bus_space_read_4(&ep93xx_bs_tag, ioh, EP93XX_SYSCON_ChipID); if ((id & 0x01faffff) == 0x9213) ret = 1; bus_space_unmap(&ep93xx_bs_tag, ioh, EP93XX_APB_SYSCON_SIZE); return ret; } static void epsoc_attach(device_t parent, device_t self, void *aux) { struct epsoc_softc *sc; uint64_t fclk, pclk, hclk; uint32_t id, clkset1; const char *rev; int locs[EPSOCCF_NLOCS]; struct epsoc_attach_args sa; sc = device_private(self); if (epsoc_sc == NULL) epsoc_sc = sc; sc->sc_iot = &ep93xx_bs_tag; bus_space_map(sc->sc_iot, EP93XX_APB_HWBASE + EP93XX_APB_SYSCON, EP93XX_APB_SYSCON_SIZE, 0, &sc->sc_ioh); id = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EP93XX_SYSCON_ChipID); switch(id >> 28) { case 0: rev = "A"; break; case 1: rev = "B"; break; case 2: rev = "C"; break; case 3: rev = "D0"; break; case 4: rev = "D1"; break; case 5: rev = "E0"; break; case 6: rev = "E1"; break; default: rev = ">E1"; break; } printf(": Cirrus Logic EP93xx SoC rev %s\n", rev); clkset1 = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EP93XX_SYSCON_ClkSet1); { int fclkdiv, hclkdiv, pclkdiv, pll1_ps; int pll1x1fbd1, pll1x2fbd2, pll1x2ipd; int hclkdivisors[] = {1, 2, 4, 5, 6, 8, 16, 32}; fclkdiv = (clkset1 & 0x0e000000) >> 25; hclkdiv = (clkset1 & 0x00700000) >> 20; pclkdiv = (clkset1 & 0x000c0000) >> 18; pll1_ps = (clkset1 & 0x00030000) >> 16; pll1x1fbd1 = (clkset1 & 0x0000f800) >> 11; pll1x2fbd2 = (clkset1 & 0x000007e0) >> 5; pll1x2ipd = (clkset1 & 0x0000001f); fclk = 14745600ULL * ((pll1x1fbd1 + 1) * (pll1x2fbd2 + 1)) / ((pll1x2ipd + 1) * (1 << pll1_ps)); hclk = fclk / hclkdivisors[hclkdiv]; pclk = hclk >> pclkdiv; if (fclkdiv > 4) fclkdiv = 0; if (clkset1 & 0x00800000) /* nBYP1 bypasses PLL */ fclk = fclk >> fclkdiv; else fclk = 14745600ULL; } printf("%s: fclk %lld.%02lld MHz hclk %lld.%02lld MHz pclk %lld.%02lld MHz\n", device_xname(self), fclk / 1000000, (fclk % 1000000 + 5000) / 10000, hclk / 1000000, (hclk % 1000000 + 5000) / 10000, pclk / 1000000, (pclk % 1000000 + 5000) / 10000); sc->sc_fclk = fclk; sc->sc_hclk = hclk; sc->sc_pclk = pclk; /* get busdma tag for the platform */ sc->sc_dmat = ep93xx_bus_dma_init(&ep93xx_bus_dma); /* * Attach each devices * some device is used by other system device. so attach first. */ sa.sa_iot = sc->sc_iot; sa.sa_dmat = sc->sc_dmat; sa.sa_hclk = sc->sc_hclk; sa.sa_pclk = sc->sc_pclk; locs[EPSOCCF_ADDR] = EP93XX_APB_HWBASE + EP93XX_APB_TIMERS; config_found_sm_loc(self, "epsoc", locs, &sa, epsoc_print, epsoc_submatch); locs[EPSOCCF_ADDR] = EP93XX_APB_HWBASE + EP93XX_APB_GPIO; sa.sa_gpio = device_private( config_found_sm_loc(self, "epsoc", locs, &sa, epsoc_print, epsoc_submatch)); config_search_ia(epsoc_search, self, "epsoc", &sa); } int epsoc_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) { struct epsoc_attach_args *sa = aux; if (cf->cf_loc[EPSOCCF_ADDR] == ldesc[EPSOCCF_ADDR]) { sa->sa_addr = cf->cf_loc[EPSOCCF_ADDR]; sa->sa_size = cf->cf_loc[EPSOCCF_SIZE]; sa->sa_intr = cf->cf_loc[EPSOCCF_INTR]; return (config_match(parent, cf, aux)); } else return (0); } int epsoc_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) { struct epsoc_attach_args *sa = aux; sa->sa_addr = cf->cf_loc[EPSOCCF_ADDR]; sa->sa_size = cf->cf_loc[EPSOCCF_SIZE]; sa->sa_intr = cf->cf_loc[EPSOCCF_INTR]; if (config_match(parent, cf, aux) > 0) config_attach(parent, cf, aux, epsoc_print); return (0); } static int epsoc_print(void *aux, const char *name) { struct epsoc_attach_args *sa = aux; if (sa->sa_size) aprint_normal(" addr 0x%lx", sa->sa_addr); if (sa->sa_size > 1) aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1); if (sa->sa_intr > 1) aprint_normal(" intr %d", sa->sa_intr); return (UNCONF); }