| 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 |
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| 29 | /**
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| 30 | * @addtogroup drvusbohci
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| 31 | * @{
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| 32 | */
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| 33 | /**
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| 34 | * @file
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| 35 | * PCI related functions needed by the OHCI driver.
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| 36 | */
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| 37 |
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| 38 | #include <errno.h>
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| 39 | #include <assert.h>
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| 40 | #include <as.h>
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| 41 | #include <devman.h>
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| 42 | #include <ddi.h>
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| 43 | #include <libarch/ddi.h>
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| 44 | #include <device/hw_res.h>
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| 45 |
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| 46 | #include <usb/debug.h>
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| 47 | #include <pci_dev_iface.h>
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| 48 |
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| 49 | #include "pci.h"
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| 50 |
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| 51 | /** Get address of registers and IRQ for given device.
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| 52 | *
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| 53 | * @param[in] dev Device asking for the addresses.
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| 54 | * @param[out] mem_reg_address Base address of the memory range.
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| 55 | * @param[out] mem_reg_size Size of the memory range.
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| 56 | * @param[out] irq_no IRQ assigned to the device.
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| 57 | * @return Error code.
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| 58 | */
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| 59 | int pci_get_my_registers(ddf_dev_t *dev,
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| 60 | uintptr_t *mem_reg_address, size_t *mem_reg_size, int *irq_no)
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| 61 | {
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| 62 | assert(dev);
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| 63 | assert(mem_reg_address);
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| 64 | assert(mem_reg_size);
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| 65 | assert(irq_no);
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| 66 |
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| 67 | async_sess_t *parent_sess =
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| 68 | devman_parent_device_connect(EXCHANGE_SERIALIZE, dev->handle,
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| 69 | IPC_FLAG_BLOCKING);
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| 70 | if (!parent_sess)
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| 71 | return ENOMEM;
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| 72 |
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| 73 | hw_resource_list_t hw_resources;
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| 74 | int rc = hw_res_get_resource_list(parent_sess, &hw_resources);
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| 75 | async_hangup(parent_sess);
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| 76 | if (rc != EOK) {
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| 77 | return rc;
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| 78 | }
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| 79 |
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| 80 | uintptr_t mem_address = 0;
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| 81 | size_t mem_size = 0;
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| 82 | bool mem_found = false;
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| 83 |
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| 84 | int irq = 0;
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| 85 | bool irq_found = false;
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| 86 |
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| 87 | for (size_t i = 0; i < hw_resources.count; i++) {
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| 88 | hw_resource_t *res = &hw_resources.resources[i];
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| 89 | switch (res->type) {
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| 90 | case INTERRUPT:
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| 91 | irq = res->res.interrupt.irq;
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| 92 | irq_found = true;
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| 93 | usb_log_debug2("Found interrupt: %d.\n", irq);
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| 94 | break;
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| 95 | case MEM_RANGE:
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| 96 | if (res->res.mem_range.address != 0
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| 97 | && res->res.mem_range.size != 0 ) {
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| 98 | mem_address = res->res.mem_range.address;
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| 99 | mem_size = res->res.mem_range.size;
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| 100 | usb_log_debug2("Found mem: %p %zu.\n",
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| 101 | (void *) mem_address, mem_size);
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| 102 | mem_found = true;
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| 103 | }
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| 104 | default:
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| 105 | break;
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| 106 | }
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| 107 | }
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| 108 | free(hw_resources.resources);
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| 109 |
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| 110 | if (mem_found && irq_found) {
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| 111 | *mem_reg_address = mem_address;
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| 112 | *mem_reg_size = mem_size;
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| 113 | *irq_no = irq;
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| 114 | return EOK;
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| 115 | }
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| 116 | return ENOENT;
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| 117 | }
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| 118 |
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| 119 | /** Call the PCI driver with a request to enable interrupts
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| 120 | *
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| 121 | * @param[in] device Device asking for interrupts
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| 122 | * @return Error code.
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| 123 | */
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| 124 | int pci_enable_interrupts(ddf_dev_t *device)
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| 125 | {
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| 126 | async_sess_t *parent_sess =
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| 127 | devman_parent_device_connect(EXCHANGE_SERIALIZE, device->handle,
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| 128 | IPC_FLAG_BLOCKING);
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| 129 | if (!parent_sess)
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| 130 | return ENOMEM;
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| 131 |
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| 132 | bool enabled = hw_res_enable_interrupt(parent_sess);
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| 133 | async_hangup(parent_sess);
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| 134 |
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| 135 | return enabled ? EOK : EIO;
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| 136 | }
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| 137 |
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| 138 | /**
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| 139 | * @}
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| 140 | */
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