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1/*
2 * omap iommu: omap device registration
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#include <linux/module.h>
14#include <linux/platform_device.h>
15
16#include <plat/iommu.h>
17#include <plat/irqs.h>
18
19struct iommu_device {
20 resource_size_t base;
21 int irq;
22 struct iommu_platform_data pdata;
23 struct resource res[2];
24};
25static struct iommu_device *devices;
26static int num_iommu_devices;
27
28#ifdef CONFIG_ARCH_OMAP3
29static struct iommu_device omap3_devices[] = {
30 {
31 .base = 0x480bd400,
32 .irq = 24,
33 .pdata = {
34 .name = "isp",
35 .nr_tlb_entries = 8,
36 .clk_name = "cam_ick",
37 .da_start = 0x0,
38 .da_end = 0xFFFFF000,
39 },
40 },
41#if defined(CONFIG_OMAP_IOMMU_IVA2)
42 {
43 .base = 0x5d000000,
44 .irq = 28,
45 .pdata = {
46 .name = "iva2",
47 .nr_tlb_entries = 32,
48 .clk_name = "iva2_ck",
49 .da_start = 0x11000000,
50 .da_end = 0xFFFFF000,
51 },
52 },
53#endif
54};
55#define NR_OMAP3_IOMMU_DEVICES ARRAY_SIZE(omap3_devices)
56static struct platform_device *omap3_iommu_pdev[NR_OMAP3_IOMMU_DEVICES];
57#else
58#define omap3_devices NULL
59#define NR_OMAP3_IOMMU_DEVICES 0
60#define omap3_iommu_pdev NULL
61#endif
62
63#ifdef CONFIG_ARCH_OMAP4
64static struct iommu_device omap4_devices[] = {
65 {
66 .base = OMAP4_MMU1_BASE,
67 .irq = OMAP44XX_IRQ_DUCATI_MMU,
68 .pdata = {
69 .name = "ducati",
70 .nr_tlb_entries = 32,
71 .clk_name = "ipu_fck",
72 .da_start = 0x0,
73 .da_end = 0xFFFFF000,
74 },
75 },
76#if defined(CONFIG_MPU_TESLA_IOMMU)
77 {
78 .base = OMAP4_MMU2_BASE,
79 .irq = INT_44XX_DSP_MMU,
80 .pdata = {
81 .name = "tesla",
82 .nr_tlb_entries = 32,
83 .clk_name = "tesla_ick",
84 .da_start = 0x0,
85 .da_end = 0xFFFFF000,
86 },
87 },
88#endif
89};
90#define NR_OMAP4_IOMMU_DEVICES ARRAY_SIZE(omap4_devices)
91static struct platform_device *omap4_iommu_pdev[NR_OMAP4_IOMMU_DEVICES];
92#else
93#define omap4_devices NULL
94#define NR_OMAP4_IOMMU_DEVICES 0
95#define omap4_iommu_pdev NULL
96#endif
97
98static struct platform_device **omap_iommu_pdev;
99
100static int __init omap_iommu_init(void)
101{
102 int i, err;
103 struct resource res[] = {
104 { .flags = IORESOURCE_MEM },
105 { .flags = IORESOURCE_IRQ },
106 };
107
108 if (cpu_is_omap34xx()) {
109 devices = omap3_devices;
110 omap_iommu_pdev = omap3_iommu_pdev;
111 num_iommu_devices = NR_OMAP3_IOMMU_DEVICES;
112 } else if (cpu_is_omap44xx()) {
113 devices = omap4_devices;
114 omap_iommu_pdev = omap4_iommu_pdev;
115 num_iommu_devices = NR_OMAP4_IOMMU_DEVICES;
116 } else
117 return -ENODEV;
118
119 for (i = 0; i < num_iommu_devices; i++) {
120 struct platform_device *pdev;
121 const struct iommu_device *d = &devices[i];
122
123 pdev = platform_device_alloc("omap-iommu", i);
124 if (!pdev) {
125 err = -ENOMEM;
126 goto err_out;
127 }
128
129 res[0].start = d->base;
130 res[0].end = d->base + MMU_REG_SIZE - 1;
131 res[1].start = res[1].end = d->irq;
132
133 err = platform_device_add_resources(pdev, res,
134 ARRAY_SIZE(res));
135 if (err)
136 goto err_out;
137 err = platform_device_add_data(pdev, &d->pdata,
138 sizeof(d->pdata));
139 if (err)
140 goto err_out;
141 err = platform_device_add(pdev);
142 if (err)
143 goto err_out;
144 omap_iommu_pdev[i] = pdev;
145 }
146 return 0;
147
148err_out:
149 while (i--)
150 platform_device_put(omap_iommu_pdev[i]);
151 return err;
152}
153/* must be ready before omap3isp is probed */
154subsys_initcall(omap_iommu_init);
155
156static void __exit omap_iommu_exit(void)
157{
158 int i;
159
160 for (i = 0; i < num_iommu_devices; i++)
161 platform_device_unregister(omap_iommu_pdev[i]);
162}
163module_exit(omap_iommu_exit);
164
165MODULE_AUTHOR("Hiroshi DOYU");
166MODULE_DESCRIPTION("omap iommu: omap device registration");
167MODULE_LICENSE("GPL v2");
1/*
2 * omap iommu: omap device registration
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#include <linux/of.h>
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/err.h>
17#include <linux/slab.h>
18
19#include <linux/platform_data/iommu-omap.h>
20#include "soc.h"
21#include "omap_hwmod.h"
22#include "omap_device.h"
23
24static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused)
25{
26 struct platform_device *pdev;
27 struct iommu_platform_data *pdata;
28 struct omap_mmu_dev_attr *a = (struct omap_mmu_dev_attr *)oh->dev_attr;
29 static int i;
30
31 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
32 if (!pdata)
33 return -ENOMEM;
34
35 pdata->name = oh->name;
36 pdata->nr_tlb_entries = a->nr_tlb_entries;
37 pdata->da_start = a->da_start;
38 pdata->da_end = a->da_end;
39
40 if (oh->rst_lines_cnt == 1) {
41 pdata->reset_name = oh->rst_lines->name;
42 pdata->assert_reset = omap_device_assert_hardreset;
43 pdata->deassert_reset = omap_device_deassert_hardreset;
44 }
45
46 pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata));
47
48 kfree(pdata);
49
50 if (IS_ERR(pdev)) {
51 pr_err("%s: device build err: %ld\n", __func__, PTR_ERR(pdev));
52 return PTR_ERR(pdev);
53 }
54
55 i++;
56
57 return 0;
58}
59
60static int __init omap_iommu_init(void)
61{
62 /* If dtb is there, the devices will be created dynamically */
63 if (of_have_populated_dt())
64 return -ENODEV;
65
66 return omap_hwmod_for_each_by_class("mmu", omap_iommu_dev_init, NULL);
67}
68/* must be ready before omap3isp is probed */
69omap_subsys_initcall(omap_iommu_init);
70
71static void __exit omap_iommu_exit(void)
72{
73 /* Do nothing */
74}
75module_exit(omap_iommu_exit);
76
77MODULE_AUTHOR("Hiroshi DOYU");
78MODULE_DESCRIPTION("omap iommu: omap device registration");
79MODULE_LICENSE("GPL v2");