/* $NetBSD: pxa2x0_space.c,v 1.14 2023/04/21 15:00:48 skrll 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. */ /* * 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 Intel PXA2[51]0 application processor. * Derived from i80321_space.c. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: pxa2x0_space.c,v 1.14 2023/04/21 15:00:48 skrll Exp $"); #include <sys/param.h> #include <sys/systm.h> #include <uvm/uvm_extern.h> #include <sys/bus.h> /* Prototypes for all the bus_space structure functions */ bs_protos(pxa2x0); bs_protos(generic); bs_protos(generic_armv4); bs_protos(bs_notimpl); struct bus_space pxa2x0_bs_tag = { /* cookie */ .bs_cookie = (void *) 0, /* mapping/unmapping */ .bs_map = pxa2x0_bs_map, .bs_unmap = pxa2x0_bs_unmap, .bs_subregion = pxa2x0_bs_subregion, /* allocation/deallocation */ .bs_alloc = pxa2x0_bs_alloc, /* not implemented */ .bs_free = pxa2x0_bs_free, /* not implemented */ /* get kernel virtual address */ .bs_vaddr = pxa2x0_bs_vaddr, /* mmap */ .bs_mmap = bs_notimpl_bs_mmap, /* barrier */ .bs_barrier = pxa2x0_bs_barrier, /* read (single) */ .bs_r_1 = generic_bs_r_1, .bs_r_2 = generic_armv4_bs_r_2, .bs_r_4 = generic_bs_r_4, .bs_r_8 = bs_notimpl_bs_r_8, /* read multiple */ .bs_rm_1 = generic_bs_rm_1, .bs_rm_2 = generic_armv4_bs_rm_2, .bs_rm_4 = generic_bs_rm_4, .bs_rm_8 = bs_notimpl_bs_rm_8, /* read region */ .bs_rr_1 = generic_bs_rr_1, .bs_rr_2 = generic_armv4_bs_rr_2, .bs_rr_4 = generic_bs_rr_4, .bs_rr_8 = bs_notimpl_bs_rr_8, /* write (single) */ .bs_w_1 = generic_bs_w_1, .bs_w_2 = generic_armv4_bs_w_2, .bs_w_4 = generic_bs_w_4, .bs_w_8 = bs_notimpl_bs_w_8, /* write multiple */ .bs_wm_1 = generic_bs_wm_1, .bs_wm_2 = generic_armv4_bs_wm_2, .bs_wm_4 = generic_bs_wm_4, .bs_wm_8 = bs_notimpl_bs_wm_8, /* write region */ .bs_wr_1 = generic_bs_wr_1, .bs_wr_2 = generic_armv4_bs_wr_2, .bs_wr_4 = generic_bs_wr_4, .bs_wr_8 = bs_notimpl_bs_wr_8, /* set multiple */ .bs_sm_1 = bs_notimpl_bs_sm_1, .bs_sm_2 = bs_notimpl_bs_sm_2, .bs_sm_4 = bs_notimpl_bs_sm_4, .bs_sm_8 = bs_notimpl_bs_sm_8, /* set region */ .bs_sr_1 = generic_bs_sr_1, .bs_sr_2 = generic_armv4_bs_sr_2, .bs_sr_4 = bs_notimpl_bs_sr_4, .bs_sr_8 = bs_notimpl_bs_sr_8, /* copy */ .bs_c_1 = bs_notimpl_bs_c_1, .bs_c_2 = generic_armv4_bs_c_2, .bs_c_4 = bs_notimpl_bs_c_4, .bs_c_8 = bs_notimpl_bs_c_8, }; int pxa2x0_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; 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_alloc(kernel_map, endpa - startpa, 0, UVM_KMF_VAONLY | UVM_KMF_NOWAIT); if (! va) return(ENOMEM); *bshp = (bus_space_handle_t)(va + (bpa - startpa)); const int pmapflags = (flag & (BUS_SPACE_MAP_CACHEABLE|BUS_SPACE_MAP_PREFETCHABLE)) ? 0 : PMAP_NOCACHE; for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, pmapflags); } pmap_update(pmap_kernel()); return(0); } void pxa2x0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) { vaddr_t va; vsize_t sz; if (pmap_devmap_find_va(bsh, size) != NULL) { /* Device was statically mapped; nothing to do. */ return; } va = trunc_page(bsh); sz = round_page(bsh + size) - va; pmap_kremove(va, sz); pmap_update(pmap_kernel()); uvm_km_free(kernel_map, va, sz, UVM_KMF_VAONLY); } int pxa2x0_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 pxa2x0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags) { /* Nothing to do. */ } void * pxa2x0_bs_vaddr(void *t, bus_space_handle_t bsh) { return ((void *)bsh); } int pxa2x0_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("pxa2x0_io_bs_alloc(): not implemented\n"); } void pxa2x0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) { panic("pxa2x0_io_bs_free(): not implemented\n"); }
