/* $NetBSD: em4k.c,v 1.4 2015/10/02 05:22:49 msaitoh Exp $ */ /*- * Copyright (c) 2013 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Radoslaw Kujawa. * * 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. */ /* Elbox Mediator PCI 4000 driver. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "opt_pci.h" static int em4k_match(device_t, cfdata_t, void *); static void em4k_attach(device_t, device_t, void *); static void em4k_callback(device_t); static void em4k_find_mem(struct em4k_softc *); static void em4k_intr_enable(struct em4k_softc *); pcireg_t em4k_pci_conf_read(pci_chipset_tag_t, pcitag_t, int); void em4k_pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); int em4k_pci_bus_maxdevs(pci_chipset_tag_t, int); void em4k_pci_attach_hook(device_t, device_t, struct pcibus_attach_args *); pcitag_t em4k_pci_make_tag(pci_chipset_tag_t, int, int, int); void em4k_pci_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *, int *); int em4k_pci_intr_map(const struct pci_attach_args *, pci_intr_handle_t *); const struct evcnt * em4k_pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t); int em4k_pci_conf_hook(pci_chipset_tag_t, int, int, int, pcireg_t); #ifdef PCI_NETBSD_CONFIGURE static void em4k_pci_configure(struct em4k_softc *sc); #endif /* PCI_NETBSD_CONFIGURE */ CFATTACH_DECL_NEW(em4k, sizeof(struct em4k_softc), em4k_match, em4k_attach, NULL, NULL); static int em4k_match(device_t parent, cfdata_t cf, void *aux) { struct zbus_args *zap; zap = aux; if (zap->manid != ZORRO_MANID_ELBOX) return 0; switch (zap->prodid) { case ZORRO_PRODID_MED4K: case ZORRO_PRODID_MED4KMKII: return 1; } return 0; } static void em4k_attach(device_t parent, device_t self, void *aux) { struct em4k_softc *sc; struct zbus_args *zap; volatile char *ba; zap = aux; sc = device_private(self); sc->sc_dev = self; ba = zap->va; sc->model = zap->prodid; switch (sc->model) { case ZORRO_PRODID_MED4K: aprint_normal(": ELBOX Mediator PCI 4000\n"); break; case ZORRO_PRODID_MED4KMKII: aprint_normal(": ELBOX Mediator PCI 4000 MK-II\n"); break; default: aprint_normal(": ELBOX Mediator PCI (unknown)\n"); break; } /* Setup bus space mappings. */ sc->pci_conf_area.base = (bus_addr_t) ba + EM4K_CONF_OFF; sc->pci_conf_area.absm = &amiga_bus_stride_1swap; sc->pci_io_area.base = (bus_addr_t) ba + EM4K_IO_OFF; sc->pci_io_area.absm = &amiga_bus_stride_1swap; sc->setup_area.base = (bus_addr_t) ba + EM4K_SETUP_OFF; sc->setup_area.absm = &amiga_bus_stride_1; /* * Defer everything until later, we need to wait for possible * emmem attachments. */ config_defer(self, em4k_callback); } static void em4k_callback(device_t self) { struct em4k_softc *sc; pci_chipset_tag_t pc; struct pcibus_attach_args pba; sc = device_private(self); pc = &sc->apc; #ifdef EM4K_DEBUG aprint_normal("em4k: mapped setup %x->%x, conf %x->%x, io %x->%x\n", kvtop((void*) sc->setup_area.base), sc->setup_area.base, kvtop((void*) sc->pci_conf_area.base), sc->pci_conf_area.base, kvtop((void*) sc->pci_io_area.base), sc->pci_io_area.base); #endif sc->pci_conf_t = &(sc->pci_conf_area); sc->pci_io_t = &(sc->pci_io_area); if (bus_space_map(sc->pci_conf_t, 0, EM4K_CONF_SIZE, 0, &sc->pci_conf_h)) aprint_error_dev(self, "couldn't map PCI config space\n"); if (bus_space_map(sc->pci_io_t, 0, EM4K_IO_SIZE, 0, &sc->pci_io_h)) aprint_error_dev(self, "couldn't map PCI I/O space\n"); sc->apc.pci_conf_datat = sc->pci_conf_t; sc->apc.pci_conf_datah = sc->pci_conf_h; sc->setup_area_t = &(sc->setup_area); if (bus_space_map(sc->setup_area_t, 0, EM4K_SETUP_SIZE, 0, &sc->setup_area_h)) aprint_error_dev(self, "couldn't map Mediator setup space\n"); em4k_find_mem(sc); if (sc->pci_mem_win_size == 0) aprint_error_dev(self, "couldn't find memory space, this shouldn't happen!\n"); /* Initialize the PCI chipset tag. */ sc->apc.pc_conf_v = (void*) pc; sc->apc.pc_bus_maxdevs = em4k_pci_bus_maxdevs; sc->apc.pc_make_tag = amiga_pci_make_tag; sc->apc.pc_decompose_tag = amiga_pci_decompose_tag; sc->apc.pc_conf_read = em4k_pci_conf_read; sc->apc.pc_conf_write = em4k_pci_conf_write; sc->apc.pc_attach_hook = em4k_pci_attach_hook; sc->apc.pc_intr_map = em4k_pci_intr_map; sc->apc.pc_intr_string = amiga_pci_intr_string; sc->apc.pc_intr_establish = amiga_pci_intr_establish; sc->apc.pc_intr_disestablish = amiga_pci_intr_disestablish; sc->apc.pc_conf_hook = em4k_pci_conf_hook; sc->apc.pc_conf_interrupt = amiga_pci_conf_interrupt; sc->apc.cookie = sc; #ifdef PCI_NETBSD_CONFIGURE em4k_pci_configure(sc); #endif /* PCI_NETBSD_CONFIGURE */ pba.pba_iot = &(sc->pci_io_area); pba.pba_dmat = NULL; pba.pba_dmat64 = NULL; pba.pba_pc = pc; pba.pba_flags = PCI_FLAGS_IO_OKAY; if (sc->pci_mem_win_size > 0) { pba.pba_memt = &(sc->pci_mem_win); pba.pba_flags |= PCI_FLAGS_MEM_OKAY; } else pba.pba_memt = NULL; pba.pba_bus = 0; pba.pba_bridgetag = NULL; /* Set correct window position. */ bus_space_write_1(sc->setup_area_t, sc->setup_area_h, EM4K_SETUP_WINDOW_OFF, kvtop((void*) sc->pci_mem_win.base) >> EM4K_WINDOW_SHIFT); em4k_intr_enable(sc); config_found_ia(self, "pcibus", &pba, pcibusprint); } #ifdef PCI_NETBSD_CONFIGURE static void em4k_pci_configure(struct em4k_softc *sc) { struct extent *ioext, *memext; /* I/O addresses are relative to I/O space address. */ ioext = extent_create("em4kio", 0, EM4K_IO_SIZE, NULL, 0, EX_NOWAIT); /* * Memory space addresses are absolute (and keep in mind that * they are in a separate address space. */ memext = extent_create("em4kmem", kvtop((void*) sc->pci_mem_win.base), kvtop((void*) sc->pci_mem_win.base) + sc->pci_mem_win_size, NULL, 0, EX_NOWAIT); pci_configure_bus(&sc->apc, ioext, memext, NULL, 0, CACHELINE_SIZE); extent_destroy(ioext); extent_destroy(memext); } #endif /* PCI_NETBSD_CONFIGURE */ static void em4k_intr_enable(struct em4k_softc *sc) { bus_space_write_1(sc->setup_area_t, sc->setup_area_h, EM4K_SETUP_INTR_OFF, EMPB_INTR_ENABLE); } /* * Try to find a (optional) memory window board. */ static void em4k_find_mem(struct em4k_softc *sc) { device_t memdev; struct emmem_softc *mem_sc; memdev = device_find_by_xname("emmem0"); sc->pci_mem_win_size = 0; if (memdev == NULL) { return; } mem_sc = device_private(memdev); sc->pci_mem_win.base = (bus_addr_t) mem_sc->sc_base; sc->pci_mem_win.absm = &amiga_bus_stride_1swap_abs; sc->pci_mem_win_size = mem_sc->sc_size; sc->pci_mem_win_t = &sc->pci_mem_win; if (sc->pci_mem_win_size == 512*1024*1024) sc->pci_mem_win_mask = EM4K_WINDOW_MASK_512M; else if (sc->pci_mem_win_size == 256*1024*1024) sc->pci_mem_win_mask = EM4K_WINDOW_MASK_256M; else /* disable anyway */ sc->pci_mem_win_size = 0; #ifdef EM4K_DEBUG aprint_normal("em4k: found %x b window at %p, switch mask %x\n", sc->pci_mem_win_size, (void*) sc->pci_mem_win.base, sc->pci_mem_win_mask); #endif /* EM4K_DEBUG */ } pcireg_t em4k_pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) { uint32_t data; uint32_t bus, dev, func; if ((unsigned int)reg >= PCI_CONF_SIZE) return (pcireg_t) -1; pci_decompose_tag(pc, tag, &bus, &dev, &func); data = bus_space_read_4(pc->pci_conf_datat, pc->pci_conf_datah, EMPB_CONF_DEV_STRIDE*dev + EMPB_CONF_FUNC_STRIDE*func + reg); #ifdef EM4K_DEBUG_CONF aprint_normal("em4k conf read va: %lx, bus: %d, dev: %d, " "func: %d, reg: %d -r-> data %x\n", pc->pci_conf_datah, bus, dev, func, reg, data); #endif /* EM4K_DEBUG_CONF */ return data; } void em4k_pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t val) { uint32_t bus, dev, func; if ((unsigned int)reg >= PCI_CONF_SIZE) return; pci_decompose_tag(pc, tag, &bus, &dev, &func); bus_space_write_4(pc->pci_conf_datat, pc->pci_conf_datah, EMPB_CONF_DEV_STRIDE*dev + EMPB_CONF_FUNC_STRIDE*func + reg, val); #ifdef EM4K_DEBUG_CONF aprint_normal("em4k conf write va: %lx, bus: %d, dev: %d, " "func: %d, reg: %d -w-> data %x\n", pc->pci_conf_datah, bus, dev, func, reg, val); #endif /* EM4K_DEBUG_CONF */ } int em4k_pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) { return 6; /* no Mediator with more than 6 slots? */ } void em4k_pci_attach_hook(device_t parent, device_t self, struct pcibus_attach_args *pba) { } int em4k_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) { /* TODO: add sanity checking */ *ihp = EMPB_INT; return 0; } const struct evcnt * em4k_pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) { /* TODO: implement */ return NULL; } int em4k_pci_conf_hook(pci_chipset_tag_t pct, int bus, int dev, int func, pcireg_t id) { return PCI_CONF_DEFAULT; }