/* $NetBSD: i80321_space.c,v 1.14 2014/03/02 13:23:16 joerg Exp $ */ /* * Copyright (c) 2001, 2002 Wasabi Systems, Inc. * All rights reserved. * * Written by Jason R. Thorpe 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. */ /* * bus_space functions for i80321 I/O Processor. */ #include __KERNEL_RCSID(0, "$NetBSD: i80321_space.c,v 1.14 2014/03/02 13:23:16 joerg Exp $"); #include #include #include #include #include #include #include "opt_i80321.h" /* Prototypes for all the bus_space structure functions */ bs_protos(i80321); bs_protos(i80321_io); bs_protos(i80321_mem); bs_protos(generic); bs_protos(generic_armv4); bs_protos(bs_notimpl); /* * Template bus_space -- copied, and the bits that are NULL are * filled in. */ const struct bus_space i80321_bs_tag_template = { /* cookie */ (void *) 0, /* mapping/unmapping */ NULL, NULL, i80321_bs_subregion, /* allocation/deallocation */ NULL, NULL, /* get kernel virtual address */ i80321_bs_vaddr, /* mmap */ i80321_bs_mmap, /* barrier */ i80321_bs_barrier, /* read (single) */ generic_bs_r_1, generic_armv4_bs_r_2, generic_bs_r_4, bs_notimpl_bs_r_8, /* read multiple */ generic_bs_rm_1, generic_armv4_bs_rm_2, generic_bs_rm_4, bs_notimpl_bs_rm_8, /* read region */ generic_bs_rr_1, generic_armv4_bs_rr_2, generic_bs_rr_4, bs_notimpl_bs_rr_8, /* write (single) */ generic_bs_w_1, generic_armv4_bs_w_2, generic_bs_w_4, bs_notimpl_bs_w_8, /* write multiple */ generic_bs_wm_1, generic_armv4_bs_wm_2, generic_bs_wm_4, bs_notimpl_bs_wm_8, /* write region */ generic_bs_wr_1, generic_armv4_bs_wr_2, generic_bs_wr_4, bs_notimpl_bs_wr_8, /* set multiple */ bs_notimpl_bs_sm_1, bs_notimpl_bs_sm_2, bs_notimpl_bs_sm_4, bs_notimpl_bs_sm_8, /* set region */ bs_notimpl_bs_sr_1, generic_armv4_bs_sr_2, generic_bs_sr_4, bs_notimpl_bs_sr_8, /* copy */ bs_notimpl_bs_c_1, generic_armv4_bs_c_2, bs_notimpl_bs_c_4, bs_notimpl_bs_c_8, }; void i80321_bs_init(bus_space_tag_t bs, void *cookie) { *bs = i80321_bs_tag_template; bs->bs_cookie = cookie; } void i80321_io_bs_init(bus_space_tag_t bs, void *cookie) { *bs = i80321_bs_tag_template; bs->bs_cookie = cookie; bs->bs_map = i80321_io_bs_map; bs->bs_unmap = i80321_io_bs_unmap; bs->bs_alloc = i80321_io_bs_alloc; bs->bs_free = i80321_io_bs_free; bs->bs_vaddr = i80321_io_bs_vaddr; } void i80321_mem_bs_init(bus_space_tag_t bs, void *cookie) { *bs = i80321_bs_tag_template; bs->bs_cookie = cookie; bs->bs_map = i80321_mem_bs_map; bs->bs_unmap = i80321_mem_bs_unmap; bs->bs_alloc = i80321_mem_bs_alloc; bs->bs_free = i80321_mem_bs_free; bs->bs_mmap = i80321_mem_bs_mmap; } /* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */ int i80321_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp) { *nbshp = bsh + offset; return (0); } void i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags) { /* Nothing to do. */ } void * i80321_bs_vaddr(void *t, bus_space_handle_t bsh) { return ((void *)bsh); } paddr_t i80321_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) { /* Not supported. */ return (-1); } /* *** Routines for PCI IO. *** */ int i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, bus_space_handle_t *bshp) { struct i80321_softc *sc = t; vaddr_t winvaddr; uint32_t busbase; if (bpa >= sc->sc_ioout_xlate && bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) { busbase = sc->sc_ioout_xlate; winvaddr = sc->sc_iow_vaddr; } else return (EINVAL); if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE)) return (EINVAL); /* * Found the window -- PCI I/O space is mapped at a fixed * virtual address by board-specific code. Translate the * bus address to the virtual address. */ *bshp = winvaddr + (bpa - busbase); return (0); } void i80321_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) { /* Nothing to do. */ } int i80321_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, bus_addr_t *bpap, bus_space_handle_t *bshp) { panic("i80321_io_bs_alloc(): not implemented"); } void i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) { panic("i80321_io_bs_free(): not implemented"); } void * i80321_io_bs_vaddr(void *t, bus_space_handle_t bsh) { /* Not supported. */ return (NULL); } /* *** Routines for PCI MEM. *** */ int i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, bus_space_handle_t *bshp) { #ifndef I80321_USE_DIRECT_WIN struct i80321_softc *sc = t; #endif vaddr_t va; uint32_t busbase; paddr_t pa, endpa, physbase; #ifdef I80321_USE_DIRECT_WIN if ( #if VERDE_OUT_DIRECT_WIN_BASE != 0 bpa >= (VERDE_OUT_DIRECT_WIN_BASE) && #endif bpa < (VERDE_OUT_DIRECT_WIN_BASE + VERDE_OUT_DIRECT_WIN_SIZE)) { busbase = VERDE_OUT_DIRECT_WIN_BASE; physbase = VERDE_OUT_DIRECT_WIN_BASE; } else return (EINVAL); if ((bpa + size) >= (VERDE_OUT_DIRECT_WIN_BASE + VERDE_OUT_DIRECT_WIN_SIZE)) return (EINVAL); #else if (bpa >= sc->sc_owin[0].owin_xlate_lo && bpa < (sc->sc_owin[0].owin_xlate_lo + VERDE_OUT_XLATE_MEM_WIN_SIZE)) { busbase = sc->sc_owin[0].owin_xlate_lo; physbase = sc->sc_iwin[1].iwin_xlate; } else return (EINVAL); if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_MEM_WIN_SIZE)) return (EINVAL); #endif /* * Found the window -- PCI MEM space is now mapped by allocating * some kernel VA space and mapping the pages with pmap_enter(). * pmap_enter() will map unmanaged pages as non-cacheable. */ pa = trunc_page((bpa - busbase) + physbase); endpa = round_page(((bpa - busbase) + physbase) + size); va = uvm_km_alloc(kernel_map, endpa - pa, 0, UVM_KMF_VAONLY | UVM_KMF_NOWAIT); if (va == 0) return (ENOMEM); *bshp = va + (bpa & PAGE_MASK); for (; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { pmap_enter(pmap_kernel(), va, pa, VM_PROT_READ | VM_PROT_WRITE, VM_PROT_READ | VM_PROT_WRITE | PMAP_WIRED); } pmap_update(pmap_kernel()); return (0); } void i80321_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) { vaddr_t va, endva; va = trunc_page(bsh); endva = round_page(bsh + size); pmap_remove(pmap_kernel(), va, endva - va); pmap_update(pmap_kernel()); /* Free the kernel virtual mapping. */ uvm_km_free(kernel_map, va, endva - va, UVM_KMF_VAONLY); } int i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, bus_addr_t *bpap, bus_space_handle_t *bshp) { panic("i80321_mem_bs_alloc(): not implemented"); } void i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) { panic("i80321_mem_bs_free(): not implemented"); } paddr_t i80321_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) { /* XXX */ return (-1); }