| 1 | /*
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| 2 | * Copyright (c) 2011 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 drvusbohci
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| 29 | * @{
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| 30 | */
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| 31 | /** @file
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| 32 | * @brief OHCI driver
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| 33 | */
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| 34 | #ifndef DRV_OHCI_HW_STRUCT_HCCA_H
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| 35 | #define DRV_OHCI_HW_STRUCT_HCCA_H
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| 36 |
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| 37 | #include <malloc.h>
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| 38 | #include <sys/types.h>
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| 39 |
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| 40 | #include "mem_access.h"
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| 41 |
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| 42 | #define HCCA_INT_EP_COUNT 32
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| 43 |
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| 44 | /** Host controller communication area.
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| 45 | * Shared memory used for communication between the controller and the driver.
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| 46 | */
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| 47 | typedef struct hcca {
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| 48 | /** Interrupt endpoints */
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| 49 | uint32_t int_ep[HCCA_INT_EP_COUNT];
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| 50 | /** Frame number. */
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| 51 | uint16_t frame_number;
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| 52 | uint16_t pad1;
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| 53 | /** Pointer to the last completed TD. (useless) */
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| 54 | uint32_t done_head;
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| 55 | /** Padding to make the size 256B */
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| 56 | uint32_t reserved[30];
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| 57 | } hcca_t;
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| 58 |
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| 59 | /** Allocate properly aligned structure.
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| 60 | *
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| 61 | * The returned structure is zeroed upon allocation.
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| 62 | *
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| 63 | * @return Usable HCCA memory structure.
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| 64 | */
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| 65 | static inline hcca_t * hcca_get(void)
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| 66 | {
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| 67 | assert(sizeof(hcca_t) == 256);
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| 68 | hcca_t *hcca = memalign(256, sizeof(hcca_t));
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| 69 | if (hcca)
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| 70 | memset(hcca, 0, sizeof(hcca_t));
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| 71 | return hcca;
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| 72 | }
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| 73 |
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| 74 | /** Set HCCA interrupt endpoint pointer table entry.
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| 75 | * @param hcca HCCA memory structure.
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| 76 | * @param index table index.
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| 77 | * @param pa Physical address.
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| 78 | */
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| 79 | static inline void hcca_set_int_ep(hcca_t *hcca, unsigned index, uintptr_t pa)
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| 80 | {
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| 81 | assert(hcca);
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| 82 | assert(index < HCCA_INT_EP_COUNT);
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| 83 | OHCI_MEM32_WR(hcca->int_ep[index], pa);
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| 84 |
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| 85 | }
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| 86 | #endif
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| 87 | /**
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| 88 | * @}
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| 89 | */
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| 90 |
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