/* $NetBSD: armv7_generic_space.c,v 1.10.4.1 2020/02/27 19:06:23 martin Exp $ */ /*- * Copyright (c) 2012 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Nick Hudson * * 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. */ #include __KERNEL_RCSID(0, "$NetBSD: armv7_generic_space.c,v 1.10.4.1 2020/02/27 19:06:23 martin Exp $"); #include #include #include #include /* Prototypes for all the bus_space structure functions */ bs_protos(armv7_generic); bs_protos(armv7_generic_a4x); bs_protos(a4x); bs_protos(bs_notimpl); bs_protos(generic); bs_protos(generic_armv4); #if __ARMEB__ #define NSWAP(n) n ## _swap #else #define NSWAP(n) n #endif __strong_alias(arm_generic_bs_tag,armv7_generic_bs_tag); __strong_alias(arm_generic_a4x_bs_tag,armv7_generic_a4x_bs_tag); struct bus_space armv7_generic_bs_tag = { /* cookie */ .bs_cookie = (void *) 0, /* mapping/unmapping */ .bs_map = armv7_generic_bs_map, .bs_unmap = armv7_generic_bs_unmap, .bs_subregion = armv7_generic_bs_subregion, /* allocation/deallocation */ .bs_alloc = armv7_generic_bs_alloc, /* not implemented */ .bs_free = armv7_generic_bs_free, /* not implemented */ /* get kernel virtual address */ .bs_vaddr = armv7_generic_bs_vaddr, /* mmap */ .bs_mmap = armv7_generic_bs_mmap, /* barrier */ .bs_barrier = armv7_generic_bs_barrier, /* read (single) */ .bs_r_1 = generic_bs_r_1, .bs_r_2 = NSWAP(generic_armv4_bs_r_2), .bs_r_4 = NSWAP(generic_bs_r_4), .bs_r_8 = bs_notimpl_bs_r_8, /* read multiple */ .bs_rm_1 = generic_bs_rm_1, .bs_rm_2 = NSWAP(generic_armv4_bs_rm_2), .bs_rm_4 = NSWAP(generic_bs_rm_4), .bs_rm_8 = bs_notimpl_bs_rm_8, /* read region */ .bs_rr_1 = generic_bs_rr_1, .bs_rr_2 = NSWAP(generic_armv4_bs_rr_2), .bs_rr_4 = NSWAP(generic_bs_rr_4), .bs_rr_8 = bs_notimpl_bs_rr_8, /* write (single) */ .bs_w_1 = generic_bs_w_1, .bs_w_2 = NSWAP(generic_armv4_bs_w_2), .bs_w_4 = NSWAP(generic_bs_w_4), .bs_w_8 = bs_notimpl_bs_w_8, /* write multiple */ .bs_wm_1 = generic_bs_wm_1, .bs_wm_2 = NSWAP(generic_armv4_bs_wm_2), .bs_wm_4 = NSWAP(generic_bs_wm_4), .bs_wm_8 = bs_notimpl_bs_wm_8, /* write region */ .bs_wr_1 = generic_bs_wr_1, .bs_wr_2 = NSWAP(generic_armv4_bs_wr_2), .bs_wr_4 = NSWAP(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 = NSWAP(generic_armv4_bs_sr_2), .bs_sr_4 = NSWAP(generic_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, #ifdef __BUS_SPACE_HAS_STREAM_METHODS /* read (single) */ .bs_r_1_s = generic_bs_r_1, .bs_r_2_s = NSWAP(generic_armv4_bs_r_2), .bs_r_4_s = NSWAP(generic_bs_r_4), .bs_r_8_s = bs_notimpl_bs_r_8, /* read multiple */ .bs_rm_1_s = generic_bs_rm_1, .bs_rm_2_s = NSWAP(generic_armv4_bs_rm_2), .bs_rm_4_s = NSWAP(generic_bs_rm_4), .bs_rm_8_s = bs_notimpl_bs_rm_8, /* read region */ .bs_rr_1_s = generic_bs_rr_1, .bs_rr_2_s = NSWAP(generic_armv4_bs_rr_2), .bs_rr_4_s = NSWAP(generic_bs_rr_4), .bs_rr_8_s = bs_notimpl_bs_rr_8, /* write (single) */ .bs_w_1_s = generic_bs_w_1, .bs_w_2_s = NSWAP(generic_armv4_bs_w_2), .bs_w_4_s = NSWAP(generic_bs_w_4), .bs_w_8_s = bs_notimpl_bs_w_8, /* write multiple */ .bs_wm_1_s = generic_bs_wm_1, .bs_wm_2_s = NSWAP(generic_armv4_bs_wm_2), .bs_wm_4_s = NSWAP(generic_bs_wm_4), .bs_wm_8_s = bs_notimpl_bs_wm_8, /* write region */ .bs_wr_1_s = generic_bs_wr_1, .bs_wr_2_s = NSWAP(generic_armv4_bs_wr_2), .bs_wr_4_s = NSWAP(generic_bs_wr_4), .bs_wr_8_s = bs_notimpl_bs_wr_8, #endif }; struct bus_space armv7_generic_a4x_bs_tag = { /* cookie */ .bs_cookie = (void *) 0, /* mapping/unmapping */ .bs_map = armv7_generic_bs_map, .bs_unmap = armv7_generic_bs_unmap, .bs_subregion = armv7_generic_a4x_bs_subregion, /* allocation/deallocation */ .bs_alloc = armv7_generic_bs_alloc, /* not implemented */ .bs_free = armv7_generic_bs_free, /* not implemented */ /* get kernel virtual address */ .bs_vaddr = armv7_generic_bs_vaddr, /* mmap */ .bs_mmap = armv7_generic_a4x_bs_mmap, /* barrier */ .bs_barrier = armv7_generic_bs_barrier, /* read (single) */ .bs_r_1 = a4x_bs_r_1, .bs_r_2 = NSWAP(a4x_bs_r_2), .bs_r_4 = NSWAP(a4x_bs_r_4), .bs_r_8 = bs_notimpl_bs_r_8, /* read multiple */ .bs_rm_1 = a4x_bs_rm_1, .bs_rm_2 = NSWAP(a4x_bs_rm_2), .bs_rm_4 = NSWAP(a4x_bs_rm_4), .bs_rm_8 = bs_notimpl_bs_rm_8, /* read region */ .bs_rr_1 = bs_notimpl_bs_rr_1, .bs_rr_2 = bs_notimpl_bs_rr_2, .bs_rr_4 = bs_notimpl_bs_rr_4, .bs_rr_8 = bs_notimpl_bs_rr_8, /* write (single) */ .bs_w_1 = a4x_bs_w_1, .bs_w_2 = NSWAP(a4x_bs_w_2), .bs_w_4 = NSWAP(a4x_bs_w_4), .bs_w_8 = bs_notimpl_bs_w_8, /* write multiple */ .bs_wm_1 = a4x_bs_wm_1, .bs_wm_2 = NSWAP(a4x_bs_wm_2), .bs_wm_4 = NSWAP(a4x_bs_wm_4), .bs_wm_8 = bs_notimpl_bs_wm_8, /* write region */ .bs_wr_1 = bs_notimpl_bs_wr_1, .bs_wr_2 = bs_notimpl_bs_wr_2, .bs_wr_4 = bs_notimpl_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 = bs_notimpl_bs_sr_1, .bs_sr_2 = bs_notimpl_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 = bs_notimpl_bs_c_2, .bs_c_4 = bs_notimpl_bs_c_4, .bs_c_8 = bs_notimpl_bs_c_8, #ifdef __BUS_SPACE_HAS_STREAM_METHODS /* read (single) */ .bs_r_1_s = a4x_bs_r_1, .bs_r_2_s = NSWAP(a4x_bs_r_2), .bs_r_4_s = NSWAP(a4x_bs_r_4), .bs_r_8_s = bs_notimpl_bs_r_8, /* read multiple */ .bs_rm_1_s = a4x_bs_rm_1, .bs_rm_2_s = NSWAP(a4x_bs_rm_2), .bs_rm_4_s = NSWAP(a4x_bs_rm_4), .bs_rm_8_s = bs_notimpl_bs_rm_8, /* read region */ .bs_rr_1_s = bs_notimpl_bs_rr_1, .bs_rr_2_s = bs_notimpl_bs_rr_2, .bs_rr_4_s = bs_notimpl_bs_rr_4, .bs_rr_8_s = bs_notimpl_bs_rr_8, /* write (single) */ .bs_w_1_s = a4x_bs_w_1, .bs_w_2_s = NSWAP(a4x_bs_w_2), .bs_w_4_s = NSWAP(a4x_bs_w_4), .bs_w_8_s = bs_notimpl_bs_w_8, /* write multiple */ .bs_wm_1_s = a4x_bs_wm_1, .bs_wm_2_s = NSWAP(a4x_bs_wm_2), .bs_wm_4_s = NSWAP(a4x_bs_wm_4), .bs_wm_8_s = bs_notimpl_bs_wm_8, /* write region */ .bs_wr_1_s = bs_notimpl_bs_wr_1, .bs_wr_2_s = bs_notimpl_bs_wr_2, .bs_wr_4_s = bs_notimpl_bs_wr_4, .bs_wr_8_s = bs_notimpl_bs_wr_8, #endif }; int armv7_generic_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flag, bus_space_handle_t *bshp) { u_long startpa, endpa, pa; const struct pmap_devmap *pd; int pmapflags; vaddr_t va; 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 | UVM_KMF_COLORMATCH); if (!va) return ENOMEM; *bshp = (bus_space_handle_t)(va + (bpa - startpa)); if (flag & BUS_SPACE_MAP_PREFETCHABLE) pmapflags = PMAP_WRITE_COMBINE; else if (flag & BUS_SPACE_MAP_CACHEABLE) pmapflags = 0; else pmapflags = PMAP_DEV; 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 armv7_generic_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 armv7_generic_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; } int armv7_generic_a4x_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp) { *nbshp = bsh + 4 * offset; return 0; } void armv7_generic_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags) { flags &= BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE; if (flags) arm_dsb(); } void * armv7_generic_bs_vaddr(void *t, bus_space_handle_t bsh) { return (void *)bsh; } paddr_t armv7_generic_bs_mmap(void *t, bus_addr_t bpa, off_t offset, int prot, int flags) { paddr_t bus_flags = 0; if (flags & BUS_SPACE_MAP_PREFETCHABLE) bus_flags |= ARM32_MMAP_WRITECOMBINE; return arm_btop(bpa + offset) | bus_flags; } paddr_t armv7_generic_a4x_bs_mmap(void *t, bus_addr_t bpa, off_t offset, int prot, int flags) { paddr_t bus_flags = 0; if (flags & BUS_SPACE_MAP_PREFETCHABLE) bus_flags |= ARM32_MMAP_WRITECOMBINE; return arm_btop(bpa + 4 * offset) | bus_flags; } int armv7_generic_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("%s(): not implemented\n", __func__); } void armv7_generic_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) { panic("%s(): not implemented\n", __func__); }