1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2022 Bjoern A. Zeeb
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/param.h>
29 #include <sys/types.h>
30 #include <sys/kernel.h>
31 #include <sys/malloc.h>
32
33 #include <linux/kernel.h> /* pr_debug */
34 #include <linux/mhi.h>
35
36 static MALLOC_DEFINE(M_LKPIMHI, "lkpimhi", "LinuxKPI MHI compat");
37
38 struct mhi_controller *
linuxkpi_mhi_alloc_controller(void)39 linuxkpi_mhi_alloc_controller(void)
40 {
41 struct mhi_controller *mhi_ctrl;
42
43 mhi_ctrl = malloc(sizeof(*mhi_ctrl), M_LKPIMHI, M_NOWAIT | M_ZERO);
44
45 return (mhi_ctrl);
46 }
47
48 void
linuxkpi_mhi_free_controller(struct mhi_controller * mhi_ctrl)49 linuxkpi_mhi_free_controller(struct mhi_controller *mhi_ctrl)
50 {
51
52 /* What else do we need to check that it is gone? */
53 free(mhi_ctrl, M_LKPIMHI);
54 }
55
56 int
linuxkpi_mhi_register_controller(struct mhi_controller * mhi_ctrl,const struct mhi_controller_config * cfg)57 linuxkpi_mhi_register_controller(struct mhi_controller *mhi_ctrl,
58 const struct mhi_controller_config *cfg)
59 {
60
61 if (mhi_ctrl == NULL || cfg == NULL)
62 return (-EINVAL);
63
64 #define CHECK_FIELD(_f) \
65 if (!mhi_ctrl->_f) \
66 return (-ENXIO);
67 CHECK_FIELD(cntrl_dev);
68 CHECK_FIELD(regs);
69 CHECK_FIELD(irq);
70 CHECK_FIELD(reg_len);
71 CHECK_FIELD(nr_irqs);
72
73 CHECK_FIELD(runtime_get);
74 CHECK_FIELD(runtime_put);
75 CHECK_FIELD(status_cb);
76 CHECK_FIELD(read_reg);
77 CHECK_FIELD(write_reg);
78 #undef CHECK_FIELD
79
80 printf("%s: XXX-BZ TODO\n", __func__);
81 return (0);
82 }
83
84 void
linuxkpi_mhi_unregister_controller(struct mhi_controller * mhi_ctrl)85 linuxkpi_mhi_unregister_controller(struct mhi_controller *mhi_ctrl)
86 {
87
88 pr_debug("%s: TODO\n", __func__);
89 }
90