/* $NetBSD: opb.c,v 1.26 2011/06/18 06:41:42 matt Exp $ */ /* * Copyright 2001,2002 Wasabi Systems, Inc. * All rights reserved. * * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC * 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. */ /* * Copyright (c) 1996 Christopher G. Demetriou. 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christopher G. Demetriou * for the NetBSD Project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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: opb.c,v 1.26 2011/06/18 06:41:42 matt Exp $"); #include "locators.h" #include "opt_emac.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static int opb_get_frequency_405gp(void); static int opb_get_frequency_405ex(void); /* * The devices on the On-chip Peripheral Bus to the 405GP/EX CPU. */ const struct opb_dev { int pvr; const char *name; bus_addr_t addr; int instance; int irq; int flags; } opb_devs [] = { /* IBM405GP */ { IBM405GP, "com", IBM405GP_UART0_BASE, 0, 0, 0 }, { IBM405GP, "com", IBM405GP_UART1_BASE, 1, 1, 0 }, { IBM405GP, "emac", IBM405GP_EMAC0_BASE, 0, 15, 0 }, { IBM405GP, "opbgpio", IBM405GP_GPIO0_BASE, 0, -1, 0 }, { IBM405GP, "gpiic",IBM405GP_IIC0_BASE, 0, 2, 0 }, { IBM405GP, "wdog", -1, 0, -1, 0 }, /* IBM405GPR */ { IBM405GPR, "com", IBM405GP_UART0_BASE, 0, 0, 0 }, { IBM405GPR, "com", IBM405GP_UART1_BASE, 1, 1, 0 }, { IBM405GPR, "emac", IBM405GP_EMAC0_BASE, 0, 15, 0 }, { IBM405GPR, "opbgpio", IBM405GP_GPIO0_BASE, 0, -1, 0 }, { IBM405GPR, "gpiic",IBM405GP_IIC0_BASE, 0, 2, 0 }, { IBM405GPR, "wdog", -1, 0, -1, 0 }, /* AMCC405EX */ { AMCC405EX, "gpt", AMCC405EX_GPT0_BASE, 0, -1, 0 }, { AMCC405EX, "com", AMCC405EX_UART0_BASE, 0, 26, 0 }, { AMCC405EX, "com", AMCC405EX_UART1_BASE, 1, 1, 0 }, { AMCC405EX, "gpiic",AMCC405EX_IIC0_BASE, 0, 2, 0 }, { AMCC405EX, "gpiic",AMCC405EX_IIC1_BASE, 1, 7, 0 }, { AMCC405EX, "scp", AMCC405EX_SCP0_BASE, 0, 8, 0 }, /* SPI */ { AMCC405EX, "opbgpio", AMCC405EX_GPIO0_BASE, -1, -1, 0 }, { AMCC405EX, "emac", AMCC405EX_EMAC0_BASE, 0, 24, OPB_FLAGS_EMAC_GBE | OPB_FLAGS_EMAC_STACV2 | OPB_FLAGS_EMAC_HT256 |\ OPB_FLAGS_EMAC_RMII_RGMII }, { AMCC405EX, "emac", AMCC405EX_EMAC1_BASE, 1, 25, OPB_FLAGS_EMAC_GBE | OPB_FLAGS_EMAC_STACV2 | OPB_FLAGS_EMAC_HT256 |\ OPB_FLAGS_EMAC_RMII_RGMII }, { AMCC405EX, "wdog", -1, 0, -1, 0 }, { 0, NULL } }; int (*opb_get_frequency)(void); const struct opb_param { int pvr; bus_addr_t base; bus_addr_t limit; int (*opb_get_frequency)(void); bus_addr_t zmii_base; bus_addr_t rgmii_base; } opb_params[] = { { IBM405GP, IBM405GP_IP_BASE, IBM405GP_IP_BASE + OPBREG_SIZE, opb_get_frequency_405gp, 0, 0 }, { IBM405GPR, IBM405GP_IP_BASE, IBM405GP_IP_BASE + OPBREG_SIZE, opb_get_frequency_405gp, 0, 0 }, { AMCC405EX, AMCC405EX_OPB_BASE, AMCC405EX_OPB_BASE + OPBREG_SIZE, opb_get_frequency_405ex, 0, AMCC405EX_RGMIIB0_BASE}, { 0 } }; static int opb_match(device_t, cfdata_t, void *); static void opb_attach(device_t, device_t, void *); static int opb_submatch(device_t, cfdata_t, const int *, void *); static int opb_print(void *, const char *); CFATTACH_DECL_NEW(opb, sizeof(struct opb_softc), opb_match, opb_attach, NULL, NULL); static struct powerpc_bus_space opb_tag = { _BUS_SPACE_BIG_ENDIAN|_BUS_SPACE_MEM_TYPE, 0x00000000, }; static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)] __attribute__((aligned(8))); static int opb_tag_init_done; /* * Probe for the opb; always succeeds. */ static int opb_match(device_t parent, cfdata_t cf, void *aux) { struct opb_attach_args *oaa = aux; /* match only opb devices */ if (strcmp(oaa->opb_name, cf->cf_name) != 0) return 0; return 1; } static int opb_submatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) { struct opb_attach_args *oaa = aux; if (cf->cf_loc[OPBCF_ADDR] != OPBCF_ADDR_DEFAULT && cf->cf_loc[OPBCF_ADDR] != oaa->opb_addr) return 0; return config_match(parent, cf, aux); } /* * Attach the on-chip peripheral bus. */ static void opb_attach(device_t parent, device_t self, void *aux) { struct opb_softc *sc = device_private(self); struct plb_attach_args *paa = aux; struct opb_attach_args oaa; int i, pvr; aprint_naive("\n"); aprint_normal("\n"); pvr = mfpvr() >> 16; sc->sc_dev = self; sc->sc_iot = opb_get_bus_space_tag(); for (i = 0; opb_params[i].pvr != 0 && opb_params[i].pvr != pvr; i++) ; if (opb_params[i].pvr == 0) panic("opb_get_bus_space_tag: no params for this CPU!"); opb_get_frequency = opb_params[i].opb_get_frequency; #ifdef EMAC_ZMII_PHY if (opb_params[i].zmii_base != 0) bus_space_map(sc->sc_iot, opb_params[i].zmii_base, ZMII0_SIZE, 0, &sc->sc_zmiih); #endif #ifdef EMAC_RGMII_PHY if (opb_params[i].rgmii_base != 0) bus_space_map(sc->sc_iot, opb_params[i].rgmii_base, RGMII0_SIZE, 0, &sc->sc_rgmiih); #endif for (i = 0; opb_devs[i].name != NULL; i++) { if (opb_devs[i].pvr != pvr) continue; oaa.opb_name = opb_devs[i].name; oaa.opb_addr = opb_devs[i].addr; oaa.opb_instance = opb_devs[i].instance; oaa.opb_irq = opb_devs[i].irq; oaa.opb_bt = sc->sc_iot; oaa.opb_dmat = paa->plb_dmat; oaa.opb_flags = opb_devs[i].flags; (void) config_found_sm_loc(self, "opb", NULL, &oaa, opb_print, opb_submatch); } } static int opb_print(void *aux, const char *pnp) { struct opb_attach_args *oaa = aux; if (pnp) aprint_normal("%s at %s", oaa->opb_name, pnp); if (oaa->opb_addr != OPBCF_ADDR_DEFAULT) aprint_normal(" addr 0x%08lx", oaa->opb_addr); if (oaa->opb_irq != OPBCF_IRQ_DEFAULT) aprint_normal(" irq %d", oaa->opb_irq); return UNCONF; } bus_space_tag_t opb_get_bus_space_tag(void) { int i, pvr; if (!opb_tag_init_done) { pvr = mfpvr() >> 16; for (i = 0; opb_params[i].pvr != 0 && opb_params[i].pvr != pvr; i++) ; if (opb_params[i].pvr == 0) panic("opb_get_bus_space_tag: no params for this CPU!"); opb_tag.pbs_base = opb_params[i].base; opb_tag.pbs_limit = opb_params[i].limit; if (bus_space_init(&opb_tag, "opbtag", ex_storage, sizeof(ex_storage))) panic("opb_attach: Failed to initialise opb_tag"); opb_tag_init_done = 1; } return &opb_tag; } static int opb_get_frequency_405gp(void) { prop_number_t pn; uint32_t pllmr; unsigned int processor_freq, plb_freq, opb_freq; pn = prop_dictionary_get(board_properties, "processor-frequency"); KASSERT(pn != NULL); processor_freq = (unsigned int) prop_number_integer_value(pn); pllmr = mfdcr(DCR_CPC0_PLLMR); plb_freq = processor_freq / CPC0_PLLMR_CBDV(pllmr); opb_freq = plb_freq / CPC0_PLLMR_OPDV(pllmr); return opb_freq; } static int opb_get_frequency_405ex(void) { prop_number_t pn; unsigned int processor_freq, plb_freq, opb_freq; pn = prop_dictionary_get(board_properties, "processor-frequency"); KASSERT(pn != NULL); processor_freq = (unsigned int) prop_number_integer_value(pn); plb_freq = processor_freq / CPR0_PLBDV0(mfcpr(DCR_CPR0_PLBD)); opb_freq = plb_freq / CPR0_OPBDV0(mfcpr(DCR_CPR0_OPBD)); return opb_freq; }