1 // SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
2 /*
3 *
4 * (C) COPYRIGHT 2011-2014, 2016-2017, 2020-2022 ARM Limited. All rights reserved.
5 *
6 * This program is free software and is provided to you under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation, and any use by you of this program is subject to the terms
9 * of such GNU license.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, you can access it online at
18 * http://www.gnu.org/licenses/gpl-2.0.html.
19 *
20 */
21
22 #include <linux/errno.h>
23 #include <linux/export.h>
24 #include <linux/ioport.h>
25 #include <linux/platform_device.h>
26 #include <linux/string.h>
27
28 /*
29 * This file is included only for type definitions and functions belonging to
30 * specific platform folders. Do not add dependencies with symbols that are
31 * defined somewhere else.
32 */
33 #include <mali_kbase_config.h>
34
35 #ifndef CONFIG_OF
36
37 #define PLATFORM_CONFIG_RESOURCE_COUNT 4
38
39 static struct platform_device *mali_device;
40
41 /**
42 * kbasep_config_parse_io_resources - Convert data in struct kbase_io_resources
43 * struct to Linux-specific resources
44 * @io_resources: Input IO resource data
45 * @linux_resources: Pointer to output array of Linux resource structures
46 *
47 * Function converts data in struct kbase_io_resources struct to an array of Linux resource structures. Note that function
48 * assumes that size of linux_resource array is at least PLATFORM_CONFIG_RESOURCE_COUNT.
49 * Resources are put in fixed order: I/O memory region, job IRQ, MMU IRQ, GPU IRQ.
50 */
kbasep_config_parse_io_resources(const struct kbase_io_resources * io_resources,struct resource * const linux_resources)51 static void kbasep_config_parse_io_resources(const struct kbase_io_resources *io_resources, struct resource *const linux_resources)
52 {
53 if (!io_resources || !linux_resources) {
54 pr_err("%s: couldn't find proper resources\n", __func__);
55 return;
56 }
57
58 memset(linux_resources, 0, PLATFORM_CONFIG_RESOURCE_COUNT * sizeof(struct resource));
59
60 linux_resources[0].start = io_resources->io_memory_region.start;
61 linux_resources[0].end = io_resources->io_memory_region.end;
62 linux_resources[0].flags = IORESOURCE_MEM;
63
64 linux_resources[1].start = io_resources->job_irq_number;
65 linux_resources[1].end = io_resources->job_irq_number;
66 linux_resources[1].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
67
68 linux_resources[2].start = io_resources->mmu_irq_number;
69 linux_resources[2].end = io_resources->mmu_irq_number;
70 linux_resources[2].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
71
72 linux_resources[3].start = io_resources->gpu_irq_number;
73 linux_resources[3].end = io_resources->gpu_irq_number;
74 linux_resources[3].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
75 }
76
kbase_platform_register(void)77 int kbase_platform_register(void)
78 {
79 struct kbase_platform_config *config;
80 struct resource resources[PLATFORM_CONFIG_RESOURCE_COUNT];
81 int err;
82
83 config = kbase_get_platform_config(); /* declared in midgard/mali_kbase_config.h but defined in platform folder */
84 if (config == NULL) {
85 pr_err("%s: couldn't get platform config\n", __func__);
86 return -ENODEV;
87 }
88
89 mali_device = platform_device_alloc("mali", 0);
90 if (mali_device == NULL)
91 return -ENOMEM;
92
93 kbasep_config_parse_io_resources(config->io_resources, resources);
94 err = platform_device_add_resources(mali_device, resources, PLATFORM_CONFIG_RESOURCE_COUNT);
95 if (err) {
96 platform_device_put(mali_device);
97 mali_device = NULL;
98 return err;
99 }
100
101 err = platform_device_add(mali_device);
102 if (err) {
103 platform_device_unregister(mali_device);
104 mali_device = NULL;
105 return err;
106 }
107
108 return 0;
109 }
110 EXPORT_SYMBOL(kbase_platform_register);
111
kbase_platform_unregister(void)112 void kbase_platform_unregister(void)
113 {
114 if (mali_device)
115 platform_device_unregister(mali_device);
116 }
117 EXPORT_SYMBOL(kbase_platform_unregister);
118
119 #endif /* CONFIG_OF */
120