From owner-svn-src-all@FreeBSD.ORG Mon Nov 4 19:44:39 2013 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id EB62F773; Mon, 4 Nov 2013 19:44:39 +0000 (UTC) (envelope-from ian@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id C98292DC5; Mon, 4 Nov 2013 19:44:39 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id rA4JidLo011519; Mon, 4 Nov 2013 19:44:39 GMT (envelope-from ian@svn.freebsd.org) Received: (from ian@localhost) by svn.freebsd.org (8.14.7/8.14.5/Submit) id rA4Jibeh011506; Mon, 4 Nov 2013 19:44:37 GMT (envelope-from ian@svn.freebsd.org) Message-Id: <201311041944.rA4Jibeh011506@svn.freebsd.org> From: Ian Lepore Date: Mon, 4 Nov 2013 19:44:37 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r257648 - in head/sys/arm: arm freescale/imx include X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Nov 2013 19:44:40 -0000 Author: ian Date: Mon Nov 4 19:44:37 2013 New Revision: 257648 URL: http://svnweb.freebsd.org/changeset/base/257648 Log: Begin reducing code duplication in arm pmap.c and pmap-v6.c by factoring out common code related to mapping device memory into a new devmap.c file. Remove the growing duplication of code that used pmap_devmap_find_pa() and then did some math with the returned results to generate a virtual address, and likewise in reverse to get a physical address. Now there are a pair of functions, arm_devmap_vtop() and arm_devmap_ptov(), to do that. The bus_space_map() implementations are rewritten in terms of these. Added: head/sys/arm/arm/devmap.c (contents, props changed) head/sys/arm/include/devmap.h (contents, props changed) Modified: head/sys/arm/arm/bus_space_generic.c head/sys/arm/arm/machdep.c head/sys/arm/arm/pmap-v6.c head/sys/arm/arm/pmap.c head/sys/arm/freescale/imx/imx6_machdep.c head/sys/arm/freescale/imx/imx_machdep.c head/sys/arm/include/fdt.h head/sys/arm/include/pmap.h Modified: head/sys/arm/arm/bus_space_generic.c ============================================================================== --- head/sys/arm/arm/bus_space_generic.c Mon Nov 4 19:32:35 2013 (r257647) +++ head/sys/arm/arm/bus_space_generic.c Mon Nov 4 19:44:37 2013 (r257648) @@ -50,6 +50,7 @@ __FBSDID("$FreeBSD$"); #include #include +#include /* Prototypes for all the bus_space structure functions */ bs_protos(generic); @@ -58,36 +59,20 @@ int generic_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, bus_space_handle_t *bshp) { - const struct pmap_devmap *pd; - vm_paddr_t startpa, endpa, pa, offset; - vm_offset_t va; - pt_entry_t *pte; - - if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) { - /* Device was statically mapped. */ - *bshp = pd->pd_va + (bpa - pd->pd_pa); - return (0); - } - - endpa = round_page(bpa + size); - offset = bpa & PAGE_MASK; - startpa = trunc_page(bpa); - - va = kva_alloc(endpa - startpa); - if (va == 0) - return (ENOMEM); - - *bshp = va + offset; - - for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { - pmap_kenter(va, pa); - pte = vtopte(va); - if (!(flags & BUS_SPACE_MAP_CACHEABLE)) { - *pte &= ~L2_S_CACHE_MASK; - PTE_SYNC(pte); - } - } + void *va; + /* + * Look up the address in the static device mappings. If it's not + * there, establish a new dynamic mapping. + * + * We don't even examine the passed-in flags. For ARM, the CACHEABLE + * flag doesn't make sense (we create PTE_DEVICE mappings), and the + * LINEAR flag is just implied because we use kva_alloc(size). + */ + if ((va = arm_devmap_ptov(bpa, size)) == NULL) + if ((va = pmap_mapdev(bpa, size)) == NULL) + return (ENOMEM); + *bshp = (bus_space_handle_t)va; return (0); } @@ -104,21 +89,13 @@ generic_bs_alloc(void *t, bus_addr_t rst void generic_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) { - vm_offset_t va, endva, origva; - if (pmap_devmap_find_va((vm_offset_t)h, size) != NULL) { - /* Device was statically mapped; nothing to do. */ - return; - } - - endva = round_page((vm_offset_t)h + size); - origva = va = trunc_page((vm_offset_t)h); - - while (va < endva) { - pmap_kremove(va); - va += PAGE_SIZE; - } - kva_free(origva, endva - origva); + /* + * If the region is static-mapped do nothing, otherwise remove the + * dynamic mapping. + */ + if (arm_devmap_vtop((void*)h, size) == DEVMAP_PADDR_NOTFOUND) + pmap_unmapdev((vm_offset_t)h, size); } void Added: head/sys/arm/arm/devmap.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/arm/arm/devmap.c Mon Nov 4 19:44:37 2013 (r257648) @@ -0,0 +1,150 @@ +/*- + * Copyright (c) 2013 Ian Lepore + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 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. + */ + +#include +__FBSDID("$FreeBSD$"); + +/* + * Routines for mapping device memory. + */ + +#include +#include +#include +#include +#include +#include + +static const struct pmap_devmap *devmap_table; + +/* + * Map all of the static regions in the devmap table, and remember + * the devmap table so other parts of the kernel can do lookups later. + */ +void +pmap_devmap_bootstrap(vm_offset_t l1pt, const struct pmap_devmap *table) +{ + const struct pmap_devmap *pd; + + devmap_table = table; + + for (pd = devmap_table; pd->pd_size != 0; ++pd) { + pmap_map_chunk(l1pt, pd->pd_va, pd->pd_pa, pd->pd_size, + pd->pd_prot,pd->pd_cache); + } +} + +/* + * Look up the given physical address in the static mapping data and return the + * corresponding virtual address, or NULL if not found. + */ +void * +arm_devmap_ptov(vm_paddr_t pa, vm_size_t size) +{ + const struct pmap_devmap *pd; + + if (devmap_table == NULL) + return (NULL); + + for (pd = devmap_table; pd->pd_size != 0; ++pd) { + if (pa >= pd->pd_pa && pa + size <= pd->pd_pa + pd->pd_size) + return ((void *)(pd->pd_va + (pa - pd->pd_pa))); + } + + return (NULL); +} + +/* + * Look up the given virtual address in the static mapping data and return the + * corresponding physical address, or DEVMAP_PADDR_NOTFOUND if not found. + */ +vm_paddr_t +arm_devmap_vtop(void * vpva, vm_size_t size) +{ + const struct pmap_devmap *pd; + vm_offset_t va; + + if (devmap_table == NULL) + return (DEVMAP_PADDR_NOTFOUND); + + va = (vm_offset_t)vpva; + for (pd = devmap_table; pd->pd_size != 0; ++pd) { + if (va >= pd->pd_va && va + size <= pd->pd_va + pd->pd_size) + return ((vm_paddr_t)(pd->pd_pa + (va - pd->pd_va))); + } + + return (DEVMAP_PADDR_NOTFOUND); +} + +/* + * Map a set of physical memory pages into the kernel virtual address space. + * Return a pointer to where it is mapped. This routine is intended to be used + * for mapping device memory, NOT real memory. + */ +void * +pmap_mapdev(vm_offset_t pa, vm_size_t size) +{ + vm_offset_t va, tmpva, offset; + + offset = pa & PAGE_MASK; + pa = trunc_page(pa); + size = round_page(size + offset); + + va = kva_alloc(size); + if (!va) + panic("pmap_mapdev: Couldn't alloc kernel virtual memory"); + + for (tmpva = va; size > 0;) { + pmap_kenter_device(tmpva, pa); + size -= PAGE_SIZE; + tmpva += PAGE_SIZE; + pa += PAGE_SIZE; + } + + return ((void *)(va + offset)); +} + +/* + * Unmap device memory and free the kva space. + */ +void +pmap_unmapdev(vm_offset_t va, vm_size_t size) +{ + vm_offset_t tmpva, offset; + + offset = va & PAGE_MASK; + va = trunc_page(va); + size = round_page(size + offset); + + for (tmpva = va; size > 0;) { + pmap_kremove(tmpva); + size -= PAGE_SIZE; + tmpva += PAGE_SIZE; + } + + kva_free(va, size); +} + Modified: head/sys/arm/arm/machdep.c ============================================================================== --- head/sys/arm/arm/machdep.c Mon Nov 4 19:32:35 2013 (r257647) +++ head/sys/arm/arm/machdep.c Mon Nov 4 19:44:37 2013 (r257648) @@ -90,6 +90,7 @@ __FBSDID("$FreeBSD$"); #include #include #include +#include #include #include #include Modified: head/sys/arm/arm/pmap-v6.c ============================================================================== --- head/sys/arm/arm/pmap-v6.c Mon Nov 4 19:32:35 2013 (r257647) +++ head/sys/arm/arm/pmap-v6.c Mon Nov 4 19:44:37 2013 (r257648) @@ -137,7 +137,9 @@ /* * Special compilation symbols * PMAP_DEBUG - Build in pmap_debug_level code - */ + * + * Note that pmap_mapdev() and pmap_unmapdev() are implemented in arm/devmap.c +*/ /* Include header files */ #include "opt_vm.h" @@ -2424,6 +2426,17 @@ pmap_kenter_nocache(vm_offset_t va, vm_p } void +pmap_kenter_device(vm_offset_t va, vm_paddr_t pa) +{ + + /* + * XXX - Need a way for kenter_internal to handle PTE_DEVICE mapping as + * a potentially different thing than PTE_NOCACHE. + */ + pmap_kenter_internal(va, pa, 0); +} + +void pmap_kenter_user(vm_offset_t va, vm_paddr_t pa) { @@ -5010,36 +5023,6 @@ pmap_align_superpage(vm_object_t object, { } - -/* - * Map a set of physical memory pages into the kernel virtual - * address space. Return a pointer to where it is mapped. This - * routine is intended to be used for mapping device memory, - * NOT real memory. - */ -void * -pmap_mapdev(vm_offset_t pa, vm_size_t size) -{ - vm_offset_t va, tmpva, offset; - - offset = pa & PAGE_MASK; - size = roundup(size, PAGE_SIZE); - - GIANT_REQUIRED; - - va = kva_alloc(size); - if (!va) - panic("pmap_mapdev: Couldn't alloc kernel virtual memory"); - for (tmpva = va; size > 0;) { - pmap_kenter_internal(tmpva, pa, 0); - size -= PAGE_SIZE; - tmpva += PAGE_SIZE; - pa += PAGE_SIZE; - } - - return ((void *)(va + offset)); -} - /* * pmap_map_section: * @@ -5222,86 +5205,6 @@ pmap_map_chunk(vm_offset_t l1pt, vm_offs } -/********************** Static device map routines ***************************/ - -static const struct pmap_devmap *pmap_devmap_table; - -/* - * Register the devmap table. This is provided in case early console - * initialization needs to register mappings created by bootstrap code - * before pmap_devmap_bootstrap() is called. - */ -void -pmap_devmap_register(const struct pmap_devmap *table) -{ - - pmap_devmap_table = table; -} - -/* - * Map all of the static regions in the devmap table, and remember - * the devmap table so other parts of the kernel can look up entries - * later. - */ -void -pmap_devmap_bootstrap(vm_offset_t l1pt, const struct pmap_devmap *table) -{ - int i; - - pmap_devmap_table = table; - - for (i = 0; pmap_devmap_table[i].pd_size != 0; i++) { -#ifdef VERBOSE_INIT_ARM - printf("devmap: %08x -> %08x @ %08x\n", - pmap_devmap_table[i].pd_pa, - pmap_devmap_table[i].pd_pa + - pmap_devmap_table[i].pd_size - 1, - pmap_devmap_table[i].pd_va); -#endif - pmap_map_chunk(l1pt, pmap_devmap_table[i].pd_va, - pmap_devmap_table[i].pd_pa, - pmap_devmap_table[i].pd_size, - pmap_devmap_table[i].pd_prot, - pmap_devmap_table[i].pd_cache); - } -} - -const struct pmap_devmap * -pmap_devmap_find_pa(vm_paddr_t pa, vm_size_t size) -{ - int i; - - if (pmap_devmap_table == NULL) - return (NULL); - - for (i = 0; pmap_devmap_table[i].pd_size != 0; i++) { - if (pa >= pmap_devmap_table[i].pd_pa && - pa + size <= pmap_devmap_table[i].pd_pa + - pmap_devmap_table[i].pd_size) - return (&pmap_devmap_table[i]); - } - - return (NULL); -} - -const struct pmap_devmap * -pmap_devmap_find_va(vm_offset_t va, vm_size_t size) -{ - int i; - - if (pmap_devmap_table == NULL) - return (NULL); - - for (i = 0; pmap_devmap_table[i].pd_size != 0; i++) { - if (va >= pmap_devmap_table[i].pd_va && - va + size <= pmap_devmap_table[i].pd_va + - pmap_devmap_table[i].pd_size) - return (&pmap_devmap_table[i]); - } - - return (NULL); -} - int pmap_dmap_iscurrent(pmap_t pmap) { Modified: head/sys/arm/arm/pmap.c ============================================================================== --- head/sys/arm/arm/pmap.c Mon Nov 4 19:32:35 2013 (r257647) +++ head/sys/arm/arm/pmap.c Mon Nov 4 19:44:37 2013 (r257648) @@ -134,6 +134,8 @@ /* * Special compilation symbols * PMAP_DEBUG - Build in pmap_debug_level code + * + * Note that pmap_mapdev() and pmap_unmapdev() are implemented in arm/devmap.c */ /* Include header files */ @@ -2842,6 +2844,17 @@ pmap_kenter_nocache(vm_offset_t va, vm_p } void +pmap_kenter_device(vm_offset_t va, vm_paddr_t pa) +{ + + /* + * XXX - Need a way for kenter_internal to handle PTE_DEVICE mapping as + * a potentially different thing than PTE_NOCACHE. + */ + pmap_kenter_internal(va, pa, 0); +} + +void pmap_kenter_user(vm_offset_t va, vm_paddr_t pa) { @@ -4690,36 +4703,6 @@ pmap_align_superpage(vm_object_t object, { } - -/* - * Map a set of physical memory pages into the kernel virtual - * address space. Return a pointer to where it is mapped. This - * routine is intended to be used for mapping device memory, - * NOT real memory. - */ -void * -pmap_mapdev(vm_offset_t pa, vm_size_t size) -{ - vm_offset_t va, tmpva, offset; - - offset = pa & PAGE_MASK; - size = roundup(size, PAGE_SIZE); - - GIANT_REQUIRED; - - va = kva_alloc(size); - if (!va) - panic("pmap_mapdev: Couldn't alloc kernel virtual memory"); - for (tmpva = va; size > 0;) { - pmap_kenter_internal(tmpva, pa, 0); - size -= PAGE_SIZE; - tmpva += PAGE_SIZE; - pa += PAGE_SIZE; - } - - return ((void *)(va + offset)); -} - #define BOOTSTRAP_DEBUG /* @@ -4940,86 +4923,6 @@ pmap_map_chunk(vm_offset_t l1pt, vm_offs } -/********************** Static device map routines ***************************/ - -static const struct pmap_devmap *pmap_devmap_table; - -/* - * Register the devmap table. This is provided in case early console - * initialization needs to register mappings created by bootstrap code - * before pmap_devmap_bootstrap() is called. - */ -void -pmap_devmap_register(const struct pmap_devmap *table) -{ - - pmap_devmap_table = table; -} - -/* - * Map all of the static regions in the devmap table, and remember - * the devmap table so other parts of the kernel can look up entries - * later. - */ -void -pmap_devmap_bootstrap(vm_offset_t l1pt, const struct pmap_devmap *table) -{ - int i; - - pmap_devmap_table = table; - - for (i = 0; pmap_devmap_table[i].pd_size != 0; i++) { -#ifdef VERBOSE_INIT_ARM - printf("devmap: %08x -> %08x @ %08x\n", - pmap_devmap_table[i].pd_pa, - pmap_devmap_table[i].pd_pa + - pmap_devmap_table[i].pd_size - 1, - pmap_devmap_table[i].pd_va); -#endif - pmap_map_chunk(l1pt, pmap_devmap_table[i].pd_va, - pmap_devmap_table[i].pd_pa, - pmap_devmap_table[i].pd_size, - pmap_devmap_table[i].pd_prot, - pmap_devmap_table[i].pd_cache); - } -} - -const struct pmap_devmap * -pmap_devmap_find_pa(vm_paddr_t pa, vm_size_t size) -{ - int i; - - if (pmap_devmap_table == NULL) - return (NULL); - - for (i = 0; pmap_devmap_table[i].pd_size != 0; i++) { - if (pa >= pmap_devmap_table[i].pd_pa && - pa + size <= pmap_devmap_table[i].pd_pa + - pmap_devmap_table[i].pd_size) - return (&pmap_devmap_table[i]); - } - - return (NULL); -} - -const struct pmap_devmap * -pmap_devmap_find_va(vm_offset_t va, vm_size_t size) -{ - int i; - - if (pmap_devmap_table == NULL) - return (NULL); - - for (i = 0; pmap_devmap_table[i].pd_size != 0; i++) { - if (va >= pmap_devmap_table[i].pd_va && - va + size <= pmap_devmap_table[i].pd_va + - pmap_devmap_table[i].pd_size) - return (&pmap_devmap_table[i]); - } - - return (NULL); -} - void pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma) { Modified: head/sys/arm/freescale/imx/imx6_machdep.c ============================================================================== --- head/sys/arm/freescale/imx/imx6_machdep.c Mon Nov 4 19:32:35 2013 (r257647) +++ head/sys/arm/freescale/imx/imx6_machdep.c Mon Nov 4 19:44:37 2013 (r257648) @@ -34,9 +34,12 @@ __FBSDID("$FreeBSD$"); #include #include -#include #include #include + +#include +#include + #include #include #include @@ -112,7 +115,6 @@ cpu_reset(void) */ u_int imx_soc_type() { - const struct pmap_devmap *pd; uint32_t digprog, hwsoc; uint32_t *pcr; const uint32_t HWSOC_MX6SL = 0x60; @@ -131,10 +133,8 @@ u_int imx_soc_type() IMX6_ANALOG_DIGPROG_SOCTYPE_SHIFT; /*printf("digprog = 0x%08x\n", digprog);*/ if (hwsoc == HWSOC_MX6DL) { - pd = pmap_devmap_find_pa(SCU_CONFIG_PHYSADDR, 4); - if (pd != NULL) { - pcr = (uint32_t *)(pd->pd_va + - (SCU_CONFIG_PHYSADDR - pd->pd_pa)); + pcr = arm_devmap_ptov(SCU_CONFIG_PHYSADDR, 4); + if (pcr != NULL) { /*printf("scu config = 0x%08x\n", *pcr);*/ if ((*pcr & 0x03) == 0) { hwsoc = HWSOC_MX6SOLO; Modified: head/sys/arm/freescale/imx/imx_machdep.c ============================================================================== --- head/sys/arm/freescale/imx/imx_machdep.c Mon Nov 4 19:32:35 2013 (r257647) +++ head/sys/arm/freescale/imx/imx_machdep.c Mon Nov 4 19:44:37 2013 (r257648) @@ -39,6 +39,7 @@ __FBSDID("$FreeBSD$"); #include #include +#include #include #include @@ -168,7 +169,6 @@ bus_dma_get_range_nb(void) void imx_wdog_cpu_reset(vm_offset_t wdcr_physaddr) { - const struct pmap_devmap *pd; volatile uint16_t * pcr; /* @@ -178,10 +178,9 @@ imx_wdog_cpu_reset(vm_offset_t wdcr_phys * reset) bit being set in the watchdog status register after the reset. * This is how software can distinguish a reset from a wdog timeout. */ - if ((pd = pmap_devmap_find_pa(wdcr_physaddr, 2)) == NULL) { + if ((pcr = arm_devmap_ptov(wdcr_physaddr, sizeof(*pcr))) == NULL) { printf("cpu_reset() can't find its control register... locking up now."); } else { - pcr = (uint16_t *)(pd->pd_va + (wdcr_physaddr - pd->pd_pa)); *pcr = WDOG_CR_WDE; } for (;;) Added: head/sys/arm/include/devmap.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/arm/include/devmap.h Mon Nov 4 19:44:37 2013 (r257648) @@ -0,0 +1,46 @@ +/*- + * Copyright (c) 2013 Ian Lepore + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 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. + * + * $FreeBSD$ + */ + +#ifndef _MACHINE_DEVMAP_H_ +#define _MACHINE_DEVMAP_H_ + +/* + * Routines to translate between virtual and physical addresses within a region + * that is static-mapped by the devmap code. If the given address range isn't + * static-mapped, then ptov returns NULL and vtop returns DEVMAP_PADDR_NOTFOUND. + * The latter implies that you can't vtop just the last byte of physical address + * space. This is not as limiting as it might sound, because even if a device + * occupies the end of the physical address space, you're only prevented from + * doing vtop for that single byte. If you vtop a size bigger than 1 it works. + */ +#define DEVMAP_PADDR_NOTFOUND ((vm_paddr_t)(-1)) + +void * arm_devmap_ptov(vm_paddr_t _pa, vm_size_t _sz); +vm_paddr_t arm_devmap_vtop(void * _va, vm_size_t _sz); + +#endif Modified: head/sys/arm/include/fdt.h ============================================================================== --- head/sys/arm/include/fdt.h Mon Nov 4 19:32:35 2013 (r257647) +++ head/sys/arm/include/fdt.h Mon Nov 4 19:44:37 2013 (r257648) @@ -56,6 +56,8 @@ struct mem_region { vm_size_t mr_size; }; +struct pmap_devmap; + int fdt_localbus_devmap(phandle_t, struct pmap_devmap *, int, int *); int fdt_pci_devmap(phandle_t, struct pmap_devmap *devmap, vm_offset_t, vm_offset_t); Modified: head/sys/arm/include/pmap.h ============================================================================== --- head/sys/arm/include/pmap.h Mon Nov 4 19:32:35 2013 (r257647) +++ head/sys/arm/include/pmap.h Mon Nov 4 19:44:37 2013 (r257648) @@ -254,6 +254,7 @@ void pmap_bootstrap(vm_offset_t firstadd int pmap_change_attr(vm_offset_t, vm_size_t, int); void pmap_kenter(vm_offset_t va, vm_paddr_t pa); void pmap_kenter_nocache(vm_offset_t va, vm_paddr_t pa); +void pmap_kenter_device(vm_offset_t va, vm_paddr_t pa); void *pmap_kenter_temp(vm_paddr_t pa, int i); void pmap_kenter_user(vm_offset_t va, vm_paddr_t pa); vm_paddr_t pmap_kextract(vm_offset_t va); @@ -707,11 +708,7 @@ struct pmap_devmap { int pd_cache; /* cache attributes */ }; -const struct pmap_devmap *pmap_devmap_find_pa(vm_paddr_t, vm_size_t); -const struct pmap_devmap *pmap_devmap_find_va(vm_offset_t, vm_size_t); - void pmap_devmap_bootstrap(vm_offset_t, const struct pmap_devmap *); -void pmap_devmap_register(const struct pmap_devmap *); #define SECTION_CACHE 0x1 #define SECTION_PT 0x2