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-rw-r--r--arch/arm/mach-omap2/omap-iommu.c167
1 files changed, 37 insertions, 130 deletions
diff --git a/arch/arm/mach-omap2/omap-iommu.c b/arch/arm/mach-omap2/omap-iommu.c
index a6a4ff8744b7..7642fc4672c1 100644
--- a/arch/arm/mach-omap2/omap-iommu.c
+++ b/arch/arm/mach-omap2/omap-iommu.c
@@ -12,153 +12,60 @@
12 12
13#include <linux/module.h> 13#include <linux/module.h>
14#include <linux/platform_device.h> 14#include <linux/platform_device.h>
15#include <linux/err.h>
16#include <linux/slab.h>
15 17
16#include <linux/platform_data/iommu-omap.h> 18#include <linux/platform_data/iommu-omap.h>
19#include <plat/omap_hwmod.h>
20#include <plat/omap_device.h>
17 21
18#include "soc.h" 22static int __init omap_iommu_dev_init(struct omap_hwmod *oh, void *unused)
19#include "common.h"
20
21struct iommu_device {
22 resource_size_t base;
23 int irq;
24 struct iommu_platform_data pdata;
25 struct resource res[2];
26};
27static struct iommu_device *devices;
28static int num_iommu_devices;
29
30#ifdef CONFIG_ARCH_OMAP3
31static struct iommu_device omap3_devices[] = {
32 {
33 .base = 0x480bd400,
34 .irq = 24 + OMAP_INTC_START,
35 .pdata = {
36 .name = "isp",
37 .nr_tlb_entries = 8,
38 .clk_name = "cam_ick",
39 .da_start = 0x0,
40 .da_end = 0xFFFFF000,
41 },
42 },
43#if defined(CONFIG_OMAP_IOMMU_IVA2)
44 {
45 .base = 0x5d000000,
46 .irq = 28 + OMAP_INTC_START,
47 .pdata = {
48 .name = "iva2",
49 .nr_tlb_entries = 32,
50 .clk_name = "iva2_ck",
51 .da_start = 0x11000000,
52 .da_end = 0xFFFFF000,
53 },
54 },
55#endif
56};
57#define NR_OMAP3_IOMMU_DEVICES ARRAY_SIZE(omap3_devices)
58static struct platform_device *omap3_iommu_pdev[NR_OMAP3_IOMMU_DEVICES];
59#else
60#define omap3_devices NULL
61#define NR_OMAP3_IOMMU_DEVICES 0
62#define omap3_iommu_pdev NULL
63#endif
64
65#ifdef CONFIG_ARCH_OMAP4
66static struct iommu_device omap4_devices[] = {
67 {
68 .base = OMAP4_MMU1_BASE,
69 .irq = 100 + OMAP44XX_IRQ_GIC_START,
70 .pdata = {
71 .name = "ducati",
72 .nr_tlb_entries = 32,
73 .clk_name = "ipu_fck",
74 .da_start = 0x0,
75 .da_end = 0xFFFFF000,
76 },
77 },
78 {
79 .base = OMAP4_MMU2_BASE,
80 .irq = 28 + OMAP44XX_IRQ_GIC_START,
81 .pdata = {
82 .name = "tesla",
83 .nr_tlb_entries = 32,
84 .clk_name = "dsp_fck",
85 .da_start = 0x0,
86 .da_end = 0xFFFFF000,
87 },
88 },
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{ 23{
102 int i, err; 24 struct platform_device *pdev;
103 struct resource res[] = { 25 struct iommu_platform_data *pdata;
104 { .flags = IORESOURCE_MEM }, 26 struct omap_mmu_dev_attr *a = (struct omap_mmu_dev_attr *)oh->dev_attr;
105 { .flags = IORESOURCE_IRQ }, 27 static int i;
106 }; 28
29 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
30 if (!pdata)
31 return -ENOMEM;
32
33 pdata->name = oh->name;
34 pdata->nr_tlb_entries = a->nr_tlb_entries;
35 pdata->da_start = a->da_start;
36 pdata->da_end = a->da_end;
37
38 if (oh->rst_lines_cnt == 1) {
39 pdata->reset_name = oh->rst_lines->name;
40 pdata->assert_reset = omap_device_assert_hardreset;
41 pdata->deassert_reset = omap_device_deassert_hardreset;
42 }
107 43
108 if (cpu_is_omap34xx()) { 44 pdev = omap_device_build("omap-iommu", i, oh, pdata, sizeof(*pdata),
109 devices = omap3_devices; 45 NULL, 0, 0);
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 46
119 for (i = 0; i < num_iommu_devices; i++) { 47 kfree(pdata);
120 struct platform_device *pdev;
121 const struct iommu_device *d = &devices[i];
122 48
123 pdev = platform_device_alloc("omap-iommu", i); 49 if (IS_ERR(pdev)) {
124 if (!pdev) { 50 pr_err("%s: device build err: %ld\n", __func__, PTR_ERR(pdev));
125 err = -ENOMEM; 51 return PTR_ERR(pdev);
126 goto err_out; 52 }
127 }
128 53
129 res[0].start = d->base; 54 i++;
130 res[0].end = d->base + MMU_REG_SIZE - 1;
131 res[1].start = res[1].end = d->irq;
132 55
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; 56 return 0;
57}
147 58
148err_out: 59static int __init omap_iommu_init(void)
149 while (i--) 60{
150 platform_device_put(omap_iommu_pdev[i]); 61 return omap_hwmod_for_each_by_class("mmu", omap_iommu_dev_init, NULL);
151 return err;
152} 62}
153/* must be ready before omap3isp is probed */ 63/* must be ready before omap3isp is probed */
154subsys_initcall(omap_iommu_init); 64subsys_initcall(omap_iommu_init);
155 65
156static void __exit omap_iommu_exit(void) 66static void __exit omap_iommu_exit(void)
157{ 67{
158 int i; 68 /* Do nothing */
159
160 for (i = 0; i < num_iommu_devices; i++)
161 platform_device_unregister(omap_iommu_pdev[i]);
162} 69}
163module_exit(omap_iommu_exit); 70module_exit(omap_iommu_exit);
164 71
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-23 10:07:51 -0500