/* $OpenBSD: s3c2xx0_space.c,v 1.2 2010/03/03 15:12:06 oga Exp $ */ /* $NetBSD: s3c2xx0_space.c,v 1.7 2005/11/24 13:08:32 yamt Exp $ */ /* * Copyright (c) 2002 Fujitsu Component Limited * Copyright (c) 2002 Genetec Corporation * 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. Neither the name of The Fujitsu Component Limited nor the name of * Genetec corporation may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC * CORPORATION ``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 FUJITSU COMPONENT LIMITED OR GENETEC * CORPORATION 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. */ /* derived from sa11x0_io.c */ /* * Copyright (c) 1997 Mark Brinicombe. * Copyright (c) 1997 Causality Limited. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Ichiro FUKUHARA. * * 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 Mark Brinicombe. * 4. The name of the company nor the name of the author may 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 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. */ /* * bus_space functions for Samsung S3C2800/2400/2410. */ #include /* __KERNEL_RCSID(0, "$NetBSD: s3c2xx0_space.c,v 1.7 2005/11/24 13:08:32 yamt Exp $"); */ #include #include #include #include #include /* Prototypes for all the bus_space structure functions */ bs_protos(s3c2xx0); bs_protos(generic); bs_protos(generic_armv4); bs_protos(bs_notimpl); struct bus_space s3c2xx0_bs_tag = { /* cookie */ (void *) 0, /* mapping/unmapping */ s3c2xx0_bs_map, s3c2xx0_bs_unmap, s3c2xx0_bs_subregion, /* allocation/deallocation */ s3c2xx0_bs_alloc, /* not implemented */ s3c2xx0_bs_free, /* not implemented */ /* get kernel virtual address */ s3c2xx0_bs_vaddr, /* mmap */ bs_notimpl_bs_mmap, /* barrier */ s3c2xx0_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 */ generic_bs_sr_1, generic_armv4_bs_sr_2, bs_notimpl_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, }; int s3c2xx0_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flag, bus_space_handle_t * bshp) { u_long startpa, endpa, pa; vaddr_t va; pt_entry_t *pte; const struct pmap_devmap *pd; if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) { /* Device was statically mapped. */ *bshp = pd->pd_va + (bpa - pd->pd_pa); return 0; } startpa = trunc_page(bpa); endpa = round_page(bpa + size); /* XXX use extent manager to check duplicate mapping */ va = uvm_km_valloc(kernel_map, endpa - startpa); if (!va) return (ENOMEM); *bshp = (bus_space_handle_t) (va + (bpa - startpa)); for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE); pte = vtopte(va); if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) *pte &= ~L2_S_CACHE_MASK; } pmap_update(pmap_kernel()); return (0); } void s3c2xx0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) { vaddr_t va; vaddr_t endva; if (pmap_devmap_find_va(bsh, size) != NULL) { /* Device was statically mapped; nothing to do. */ return; } endva = round_page(bsh + size); va = trunc_page(bsh); pmap_kremove(va, endva - va); pmap_update(pmap_kernel()); uvm_km_free(kernel_map, va, endva - va); } int s3c2xx0_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 s3c2xx0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags) { /* Nothing to do. */ } void * s3c2xx0_bs_vaddr(void *t, bus_space_handle_t bsh) { return ((void *) bsh); } int s3c2xx0_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("s3c2xx0_io_bs_alloc(): not implemented\n"); } void s3c2xx0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) { panic("s3c2xx0_io_bs_free(): not implemented\n"); }