| 1 | /*
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| 2 | * Copyright (c) 2010 Jan Vesely
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 | /** @addtogroup usb
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| 29 | * @{
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| 30 | */
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| 31 | /** @file
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| 32 | * @brief UHCI driver
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| 33 | */
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| 34 | #ifndef DRV_UHCI_TRANSLATOR_H
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| 35 | #define DRV_UHCI_TRANSLATOR_H
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| 36 |
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| 37 | #include <assert.h>
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| 38 | #include <malloc.h>
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| 39 | #include <mem.h>
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| 40 | #include <as.h>
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| 41 |
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| 42 | #include "slab.h"
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| 43 |
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| 44 | #define UHCI_STRCUTURES_ALIGNMENT 16
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| 45 | #define UHCI_REQUIRED_PAGE_SIZE 4096
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| 46 |
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| 47 |
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| 48 | /** Get physical address translation
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| 49 | *
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| 50 | * @param[in] addr Virtual address to translate
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| 51 | * @return Physical address if exists, NULL otherwise.
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| 52 | */
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| 53 | static inline uintptr_t addr_to_phys(void *addr)
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| 54 | {
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| 55 | if (addr == NULL)
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| 56 | return 0;
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| 57 |
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| 58 | uintptr_t result;
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| 59 | const int ret = as_get_physical_mapping(addr, &result);
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| 60 | assert(ret == EOK);
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| 61 |
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| 62 | if (ret != EOK)
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| 63 | return 0;
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| 64 | return (result | ((uintptr_t)addr & 0xfff));
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| 65 | }
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| 66 | /*----------------------------------------------------------------------------*/
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| 67 | /** Physical mallocator simulator
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| 68 | *
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| 69 | * @param[in] size Size of the required memory space
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| 70 | * @return Address of the alligned and big enough memory place, NULL on failure.
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| 71 | */
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| 72 | static inline void * malloc32(size_t size) {
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| 73 | if (size <= SLAB_ELEMENT_SIZE)
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| 74 | return slab_malloc_g();
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| 75 | assert(false);
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| 76 | return memalign(UHCI_STRCUTURES_ALIGNMENT, size);
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| 77 | }
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| 78 | /*----------------------------------------------------------------------------*/
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| 79 | /** Physical mallocator simulator
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| 80 | *
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| 81 | * @param[in] addr Address of the place allocated by malloc32
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| 82 | */
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| 83 | static inline void free32(void *addr) {
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| 84 | if (!addr)
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| 85 | return;
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| 86 | if (slab_in_range_g(addr))
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| 87 | return slab_free_g(addr);
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| 88 | free(addr);
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| 89 | }
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| 90 | /*----------------------------------------------------------------------------*/
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| 91 | /** Create 4KB page mapping
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| 92 | *
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| 93 | * @return Address of the mapped page, NULL on failure.
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| 94 | */
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| 95 | static inline void * get_page(void)
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| 96 | {
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| 97 | void *free_address = as_get_mappable_page(UHCI_REQUIRED_PAGE_SIZE);
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| 98 | assert(free_address); /* TODO: remove this assert */
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| 99 | if (free_address == 0)
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| 100 | return NULL;
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| 101 | void *ret = as_area_create(free_address, UHCI_REQUIRED_PAGE_SIZE,
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| 102 | AS_AREA_READ | AS_AREA_WRITE);
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| 103 | if (ret != free_address)
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| 104 | return NULL;
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| 105 | return ret;
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| 106 | }
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| 107 |
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| 108 | #endif
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| 109 | /**
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| 110 | * @}
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| 111 | */
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