source: mainline/uspace/lib/drv/include/ops/hw_res.h@ 832cbe7

Last change on this file since 832cbe7 was 832cbe7, checked in by Jiri Svoboda <jiri@…>, 5 months ago

Add proper IDE PCI to ISA fallback mechanism.

To determine if legacy IDE I/O ports are free, isa-ide asks isa,
who asks pciintel. pciintel waits for bus enumeration to complete,
then waits for all functions except the one who is asking
(which is ISA bus) to stabilize. During attach pci-ide will claim
the legacy IDE ports. Thus, if at this point legacy IDE ports
are unclaimed, pciintel tells ISA they are free, which tells isa-ide,
which continues to attach. If they are not free, isa-ide will not
attach.

This works for all use cases, including system without PCI bus,
system with PCI bus, but no (or disabled) PCI IDE, system with PCI
IDE with unrecognized VID/PID (which we will handle in legacy ISA mode).

  • Property mode set to 100644
File size: 2.2 KB
Line 
1/*
2 * Copyright (c) 2025 Jiri Svoboda
3 * Copyright (c) 2010 Lenka Trochtova
4 * Copyright (c) 2011 Jan Vesely
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * - The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31/** @addtogroup libdrv
32 * @{
33 */
34/** @file
35 */
36
37#ifndef LIBDRV_OPS_HW_RES_H_
38#define LIBDRV_OPS_HW_RES_H_
39
40#include <device/hw_res.h>
41#include <stddef.h>
42#include <stdint.h>
43#include "../ddf/driver.h"
44
45typedef struct {
46 hw_resource_list_t *(*get_resource_list)(ddf_fun_t *);
47 errno_t (*enable_interrupt)(ddf_fun_t *, int);
48 errno_t (*disable_interrupt)(ddf_fun_t *, int);
49 errno_t (*clear_interrupt)(ddf_fun_t *, int);
50 errno_t (*dma_channel_setup)(ddf_fun_t *, unsigned, uint32_t, uint32_t, uint8_t);
51 errno_t (*dma_channel_remain)(ddf_fun_t *, unsigned, size_t *);
52 errno_t (*query_legacy_io)(ddf_fun_t *, hw_res_claims_t *);
53 errno_t (*claim_legacy_io)(ddf_fun_t *, hw_res_claims_t);
54} hw_res_ops_t;
55
56#endif
57
58/**
59 * @}
60 */
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