1 /*
2 *
3 * (C) COPYRIGHT 2011-2014, 2016 ARM Limited. All rights reserved.
4 *
5 * This program is free software and is provided to you under the terms of the
6 * GNU General Public License version 2 as published by the Free Software
7 * Foundation, and any use by you of this program is subject to the terms
8 * of such GNU licence.
9 *
10 * A copy of the licence is included with the program, and can also be obtained
11 * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
12 * Boston, MA 02110-1301, USA.
13 *
14 */
15
16
17
18 #ifdef CONFIG_MALI_PLATFORM_FAKE
19
20 #include <linux/errno.h>
21 #include <linux/export.h>
22 #include <linux/ioport.h>
23 #include <linux/platform_device.h>
24 #include <linux/string.h>
25
26
27 /*
28 * This file is included only for type definitions and functions belonging to
29 * specific platform folders. Do not add dependencies with symbols that are
30 * defined somewhere else.
31 */
32 #include <mali_kbase_config.h>
33
34 #define PLATFORM_CONFIG_RESOURCE_COUNT 4
35 #define PLATFORM_CONFIG_IRQ_RES_COUNT 3
36
37 static struct platform_device *mali_device;
38
39 #ifndef CONFIG_OF
40 /**
41 * @brief Convert data in struct kbase_io_resources struct to Linux-specific resources
42 *
43 * Function converts data in struct kbase_io_resources struct to an array of Linux resource structures. Note that function
44 * assumes that size of linux_resource array is at least PLATFORM_CONFIG_RESOURCE_COUNT.
45 * Resources are put in fixed order: I/O memory region, job IRQ, MMU IRQ, GPU IRQ.
46 *
47 * @param[in] io_resource Input IO resource data
48 * @param[out] linux_resources Pointer to output array of Linux resource structures
49 */
kbasep_config_parse_io_resources(const struct kbase_io_resources * io_resources,struct resource * const linux_resources)50 static void kbasep_config_parse_io_resources(const struct kbase_io_resources *io_resources, struct resource *const linux_resources)
51 {
52 if (!io_resources || !linux_resources) {
53 pr_err("%s: couldn't find proper resources\n", __func__);
54 return;
55 }
56
57 memset(linux_resources, 0, PLATFORM_CONFIG_RESOURCE_COUNT * sizeof(struct resource));
58
59 linux_resources[0].start = io_resources->io_memory_region.start;
60 linux_resources[0].end = io_resources->io_memory_region.end;
61 linux_resources[0].flags = IORESOURCE_MEM;
62
63 linux_resources[1].start = io_resources->job_irq_number;
64 linux_resources[1].end = io_resources->job_irq_number;
65 linux_resources[1].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
66
67 linux_resources[2].start = io_resources->mmu_irq_number;
68 linux_resources[2].end = io_resources->mmu_irq_number;
69 linux_resources[2].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
70
71 linux_resources[3].start = io_resources->gpu_irq_number;
72 linux_resources[3].end = io_resources->gpu_irq_number;
73 linux_resources[3].flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL;
74 }
75 #endif /* CONFIG_OF */
76
kbase_platform_fake_register(void)77 int kbase_platform_fake_register(void)
78 {
79 struct kbase_platform_config *config;
80 #ifndef CONFIG_OF
81 struct resource resources[PLATFORM_CONFIG_RESOURCE_COUNT];
82 #endif
83 int err;
84
85 config = kbase_get_platform_config(); /* declared in midgard/mali_kbase_config.h but defined in platform folder */
86 if (config == NULL) {
87 pr_err("%s: couldn't get platform config\n", __func__);
88 return -ENODEV;
89 }
90
91 mali_device = platform_device_alloc("mali", 0);
92 if (mali_device == NULL)
93 return -ENOMEM;
94
95 #ifndef CONFIG_OF
96 kbasep_config_parse_io_resources(config->io_resources, resources);
97 err = platform_device_add_resources(mali_device, resources, PLATFORM_CONFIG_RESOURCE_COUNT);
98 if (err) {
99 platform_device_put(mali_device);
100 mali_device = NULL;
101 return err;
102 }
103 #endif /* CONFIG_OF */
104
105 err = platform_device_add(mali_device);
106 if (err) {
107 platform_device_unregister(mali_device);
108 mali_device = NULL;
109 return err;
110 }
111
112 return 0;
113 }
114 EXPORT_SYMBOL(kbase_platform_fake_register);
115
kbase_platform_fake_unregister(void)116 void kbase_platform_fake_unregister(void)
117 {
118 if (mali_device)
119 platform_device_unregister(mali_device);
120 }
121 EXPORT_SYMBOL(kbase_platform_fake_unregister);
122
123 #endif /* CONFIG_MALI_PLATFORM_FAKE */
124
125