Index: uspace/lib/usbhost/Makefile =================================================================== --- uspace/lib/usbhost/Makefile (revision 55958412df6b000da41325bf219018aabc44bde9) +++ uspace/lib/usbhost/Makefile (revision 0247bd24eab20736d9bd6ad605a5fffbf6d4fc4c) @@ -40,5 +40,4 @@ src/usb2_bus.c \ src/bandwidth.c \ - src/dma_buffer.c \ src/utility.c \ src/usb_transfer_batch.c Index: uspace/lib/usbhost/include/usb/host/dma_buffer.h =================================================================== --- uspace/lib/usbhost/include/usb/host/dma_buffer.h (revision 55958412df6b000da41325bf219018aabc44bde9) +++ (revision ) @@ -1,72 +1,0 @@ -/* - * Copyright (c) 2017 Ondrej Hlavaty - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - 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. - * - The name of the author may not 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 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. - */ -/** @addtogroup drvusbehci - * @{ - */ -/** @file - * @brief USB host controller library: DMA buffer helpers - * - * Simplifies usage of bounce buffers. - * - * Currently the minimum size allocated is a page, which is wasteful. Could be - * extended to support memory pools, which will enable smaller units of - * allocation. - */ -#ifndef LIB_USBHOST_DMA_BUFFER -#define LIB_USBHOST_DMA_BUFFER - -#include -#include -#include - -typedef const struct dma_policy { - bool use64; /**< Whether to use more than initial 4GiB of memory */ - size_t alignment; /**< What alignment is needed. At most PAGE_SIZE. */ -} dma_policy_t; - -typedef struct dma_buffer { - void *virt; - uintptr_t phys; -} dma_buffer_t; - -extern dma_policy_t dma_policy_default; - -extern int dma_buffer_alloc(dma_buffer_t *db, size_t size); -extern int dma_buffer_alloc_policy(dma_buffer_t *, size_t, dma_policy_t); -extern void dma_buffer_free(dma_buffer_t *); -extern uintptr_t dma_buffer_phys(const dma_buffer_t *, void *); - -static inline int dma_buffer_is_set(dma_buffer_t *db) -{ - return !!db->virt; -} - -#endif -/** - * @} - */ Index: uspace/lib/usbhost/src/dma_buffer.c =================================================================== --- uspace/lib/usbhost/src/dma_buffer.c (revision 55958412df6b000da41325bf219018aabc44bde9) +++ (revision ) @@ -1,123 +1,0 @@ -/* - * Copyright (c) 2013 Jan Vesely - * Copyright (c) 2017 Ondrej Hlavaty - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - 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. - * - The name of the author may not 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 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. - */ -/** @addtogroup libusbhost - * @{ - */ -/** @file - */ - -#include -#include -#include -#include - -#include "dma_buffer.h" - -dma_policy_t dma_policy_default = { - .use64 = false, - .alignment = PAGE_SIZE, -}; - -/** - * Allocate a DMA buffer. - * - * @param[in] db dma_buffer_t structure to fill - * @param[in] policy dma_policy_t structure to guide - * @param[in] size Size of the required memory space - * @return Error code. - */ -int dma_buffer_alloc_policy(dma_buffer_t *db, size_t size, dma_policy_t policy) -{ - assert(db); - - if (policy.alignment > PAGE_SIZE) - return EINVAL; - - const size_t aligned_size = ALIGN_UP(size, policy.alignment); - const size_t real_size = ALIGN_UP(aligned_size, PAGE_SIZE); - const uintptr_t flags = policy.use64 ? 0 : DMAMEM_4GiB; - - uintptr_t phys; - void *address = AS_AREA_ANY; - - const int ret = dmamem_map_anonymous(real_size, - flags, AS_AREA_READ | AS_AREA_WRITE, 0, - &phys, &address); - - if (ret == EOK) { - /* Poison, accessing it should be enough to make sure - * the location is mapped, but poison works better */ - memset(address, 0x5, real_size); - db->virt = address; - db->phys = phys; - } - return ret; -} - -/** - * Allocate a DMA buffer using the default policy. - * - * @param[in] db dma_buffer_t structure to fill - * @param[in] size Size of the required memory space - * @return Error code. - */ -int dma_buffer_alloc(dma_buffer_t *db, size_t size) -{ - return dma_buffer_alloc_policy(db, size, dma_policy_default); -} - - -/** - * Free a DMA buffer. - * - * @param[in] db dma_buffer_t structure buffer of which will be freed - */ -void dma_buffer_free(dma_buffer_t *db) -{ - if (db->virt) { - dmamem_unmap_anonymous(db->virt); - db->virt = NULL; - db->phys = 0; - } -} - -/** - * Convert a pointer inside a buffer to physical address. - * - * @param[in] db Buffer at which virt is pointing - * @param[in] virt Pointer somewhere inside db - */ -uintptr_t dma_buffer_phys(const dma_buffer_t *db, void *virt) -{ - return db->phys + (virt - db->virt); -} - -/** - * @} - */