diff options
Diffstat (limited to 'sys/arm/s3c2xx0/s3c2xx0_space.c')
| -rw-r--r-- | sys/arm/s3c2xx0/s3c2xx0_space.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/sys/arm/s3c2xx0/s3c2xx0_space.c b/sys/arm/s3c2xx0/s3c2xx0_space.c new file mode 100644 index 0000000..2349672 --- /dev/null +++ b/sys/arm/s3c2xx0/s3c2xx0_space.c @@ -0,0 +1,252 @@ +/* $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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> + +#include <vm/vm.h> +#include <vm/vm_kern.h> +#include <vm/pmap.h> +#include <vm/vm_page.h> +#include <vm/vm_extern.h> + +#include <machine/bus.h> + +/* Prototypes for all the bus_space structure functions */ +bs_protos(s3c2xx0); +bs_protos(generic); +bs_protos(generic_armv4); + +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 */ + + /* barrier */ + s3c2xx0_bs_barrier, + + /* read (single) */ + generic_bs_r_1, + generic_armv4_bs_r_2, + generic_bs_r_4, + NULL, + + /* read multiple */ + generic_bs_rm_1, + generic_armv4_bs_rm_2, + generic_bs_rm_4, + NULL, + + /* read region */ + generic_bs_rr_1, + generic_armv4_bs_rr_2, + generic_bs_rr_4, + NULL, + + /* write (single) */ + generic_bs_w_1, + generic_armv4_bs_w_2, + generic_bs_w_4, + NULL, + + /* write multiple */ + generic_bs_wm_1, + generic_armv4_bs_wm_2, + generic_bs_wm_4, + NULL, + + /* write region */ + generic_bs_wr_1, + generic_armv4_bs_wr_2, + generic_bs_wr_4, + NULL, + + /* set multiple */ + NULL, + NULL, + NULL, + NULL, + + /* set region */ + generic_bs_sr_1, + generic_armv4_bs_sr_2, + NULL, + NULL, + + /* copy */ + NULL, + generic_armv4_bs_c_2, + NULL, + NULL, +}; + +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; + vm_offset_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 = kmem_alloc(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(va, pa); + pte = vtopte(va); + if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) + *pte &= ~L2_S_CACHE_MASK; + } + return (0); +} + +void +s3c2xx0_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) +{ + vm_offset_t va, endva; + + if (pmap_devmap_find_va((vm_offset_t)t, size) != NULL) { + /* Device was statically mapped; nothing to do. */ + return; + } + + endva = round_page((vm_offset_t)t + size); + va = trunc_page((vm_offset_t)t); + + while (va < endva) { + pmap_kremove(va); + va += PAGE_SIZE; + } + kmem_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. */ +} + +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"); +} |
