| 1 | /*
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| 2 | * Copyright (c) 2011 Vojtech Horky
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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 | /**
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| 29 | * @addtogroup drvusbuhci
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | * PCI related functions needed by the UHCI driver.
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| 35 | */
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| 36 | #include "uhci.h"
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| 37 | #include <errno.h>
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| 38 | #include <assert.h>
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| 39 | #include <devman.h>
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| 40 | #include <device/hw_res.h>
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| 41 |
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| 42 | /** Get address of registers and IRQ for given device.
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| 43 | *
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| 44 | * @param[in] dev Device asking for the addresses.
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| 45 | * @param[out] io_reg_address Base address of the I/O range.
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| 46 | * @param[out] io_reg_size Size of the I/O range.
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| 47 | * @param[out] irq_no IRQ assigned to the device.
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| 48 | * @return Error code.
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| 49 | */
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| 50 | int pci_get_my_registers(device_t *dev,
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| 51 | uintptr_t *io_reg_address, size_t *io_reg_size,
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| 52 | int *irq_no)
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| 53 | {
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| 54 | assert(dev != NULL);
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| 55 |
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| 56 | int parent_phone = devman_parent_device_connect(dev->handle,
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| 57 | IPC_FLAG_BLOCKING);
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| 58 | if (parent_phone < 0) {
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| 59 | return parent_phone;
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| 60 | }
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| 61 |
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| 62 | int rc;
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| 63 |
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| 64 | hw_resource_list_t hw_resources;
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| 65 | rc = hw_res_get_resource_list(parent_phone, &hw_resources);
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| 66 | if (rc != EOK) {
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| 67 | goto leave;
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| 68 | }
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| 69 |
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| 70 | uintptr_t io_address = 0;
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| 71 | size_t io_size = 0;
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| 72 | bool io_found = false;
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| 73 |
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| 74 | int irq = 0;
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| 75 | bool irq_found = false;
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| 76 |
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| 77 | size_t i;
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| 78 | for (i = 0; i < hw_resources.count; i++) {
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| 79 | hw_resource_t *res = &hw_resources.resources[i];
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| 80 | switch (res->type) {
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| 81 | case INTERRUPT:
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| 82 | irq = res->res.interrupt.irq;
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| 83 | irq_found = true;
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| 84 | break;
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| 85 | case IO_RANGE:
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| 86 | io_address = (uintptr_t)
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| 87 | res->res.io_range.address;
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| 88 | io_size = res->res.io_range.size;
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| 89 | io_found = true;
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| 90 | break;
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| 91 | default:
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| 92 | break;
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| 93 | }
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| 94 | }
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| 95 |
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| 96 | if (!io_found) {
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| 97 | rc = ENOENT;
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| 98 | goto leave;
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| 99 | }
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| 100 |
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| 101 | if (!irq_found) {
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| 102 | rc = ENOENT;
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| 103 | goto leave;
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| 104 | }
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| 105 |
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| 106 | if (io_reg_address != NULL) {
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| 107 | *io_reg_address = io_address;
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| 108 | }
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| 109 | if (io_reg_size != NULL) {
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| 110 | *io_reg_size = io_size;
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| 111 | }
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| 112 | if (irq_no != NULL) {
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| 113 | *irq_no = irq;
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| 114 | }
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| 115 |
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| 116 | rc = EOK;
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| 117 | leave:
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| 118 | ipc_hangup(parent_phone);
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| 119 |
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| 120 | return rc;
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| 121 | }
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| 122 |
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| 123 | /**
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| 124 | * @}
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| 125 | */
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| 126 |
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