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1 #include <linux/module.h>
2 #include <linux/io.h>
3 #include <linux/mm.h>
4 
5 #include <mach/omap730.h>
6 #include <mach/omap1510.h>
7 #include <mach/omap16xx.h>
8 #include <mach/omap24xx.h>
9 #include <mach/omap34xx.h>
10 
11 #define BETWEEN(p,st,sz)	((p) >= (st) && (p) < ((st) + (sz)))
12 #define XLATE(p,pst,vst)	((void __iomem *)((p) - (pst) + (vst)))
13 
14 /*
15  * Intercept ioremap() requests for addresses in our fixed mapping regions.
16  */
omap_ioremap(unsigned long p,size_t size,unsigned int type)17 void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
18 {
19 #ifdef CONFIG_ARCH_OMAP1
20 	if (cpu_class_is_omap1()) {
21 		if (BETWEEN(p, IO_PHYS, IO_SIZE))
22 			return XLATE(p, IO_PHYS, IO_VIRT);
23 	}
24 	if (cpu_is_omap730()) {
25 		if (BETWEEN(p, OMAP730_DSP_BASE, OMAP730_DSP_SIZE))
26 			return XLATE(p, OMAP730_DSP_BASE, OMAP730_DSP_START);
27 
28 		if (BETWEEN(p, OMAP730_DSPREG_BASE, OMAP730_DSPREG_SIZE))
29 			return XLATE(p, OMAP730_DSPREG_BASE,
30 					OMAP730_DSPREG_START);
31 	}
32 	if (cpu_is_omap15xx()) {
33 		if (BETWEEN(p, OMAP1510_DSP_BASE, OMAP1510_DSP_SIZE))
34 			return XLATE(p, OMAP1510_DSP_BASE, OMAP1510_DSP_START);
35 
36 		if (BETWEEN(p, OMAP1510_DSPREG_BASE, OMAP1510_DSPREG_SIZE))
37 			return XLATE(p, OMAP1510_DSPREG_BASE,
38 					OMAP1510_DSPREG_START);
39 	}
40 	if (cpu_is_omap16xx()) {
41 		if (BETWEEN(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_SIZE))
42 			return XLATE(p, OMAP16XX_DSP_BASE, OMAP16XX_DSP_START);
43 
44 		if (BETWEEN(p, OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_SIZE))
45 			return XLATE(p, OMAP16XX_DSPREG_BASE,
46 					OMAP16XX_DSPREG_START);
47 	}
48 #endif
49 #ifdef CONFIG_ARCH_OMAP2
50 	if (cpu_is_omap24xx()) {
51 		if (BETWEEN(p, L3_24XX_PHYS, L3_24XX_SIZE))
52 			return XLATE(p, L3_24XX_PHYS, L3_24XX_VIRT);
53 		if (BETWEEN(p, L4_24XX_PHYS, L4_24XX_SIZE))
54 			return XLATE(p, L4_24XX_PHYS, L4_24XX_VIRT);
55 	}
56 	if (cpu_is_omap2420()) {
57 		if (BETWEEN(p, DSP_MEM_24XX_PHYS, DSP_MEM_24XX_SIZE))
58 			return XLATE(p, DSP_MEM_24XX_PHYS, DSP_MEM_24XX_VIRT);
59 		if (BETWEEN(p, DSP_IPI_24XX_PHYS, DSP_IPI_24XX_SIZE))
60 			return XLATE(p, DSP_IPI_24XX_PHYS, DSP_IPI_24XX_SIZE);
61 		if (BETWEEN(p, DSP_MMU_24XX_PHYS, DSP_MMU_24XX_SIZE))
62 			return XLATE(p, DSP_MMU_24XX_PHYS, DSP_MMU_24XX_VIRT);
63 	}
64 	if (cpu_is_omap2430()) {
65 		if (BETWEEN(p, L4_WK_243X_PHYS, L4_WK_243X_SIZE))
66 			return XLATE(p, L4_WK_243X_PHYS, L4_WK_243X_VIRT);
67 		if (BETWEEN(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_SIZE))
68 			return XLATE(p, OMAP243X_GPMC_PHYS, OMAP243X_GPMC_VIRT);
69 		if (BETWEEN(p, OMAP243X_SDRC_PHYS, OMAP243X_SDRC_SIZE))
70 			return XLATE(p, OMAP243X_SDRC_PHYS, OMAP243X_SDRC_VIRT);
71 		if (BETWEEN(p, OMAP243X_SMS_PHYS, OMAP243X_SMS_SIZE))
72 			return XLATE(p, OMAP243X_SMS_PHYS, OMAP243X_SMS_VIRT);
73 	}
74 #endif
75 #ifdef CONFIG_ARCH_OMAP3
76 	if (cpu_is_omap34xx()) {
77 		if (BETWEEN(p, L3_34XX_PHYS, L3_34XX_SIZE))
78 			return XLATE(p, L3_34XX_PHYS, L3_34XX_VIRT);
79 		if (BETWEEN(p, L4_34XX_PHYS, L4_34XX_SIZE))
80 			return XLATE(p, L4_34XX_PHYS, L4_34XX_VIRT);
81 		if (BETWEEN(p, L4_WK_34XX_PHYS, L4_WK_34XX_SIZE))
82 			return XLATE(p, L4_WK_34XX_PHYS, L4_WK_34XX_VIRT);
83 		if (BETWEEN(p, OMAP34XX_GPMC_PHYS, OMAP34XX_GPMC_SIZE))
84 			return XLATE(p, OMAP34XX_GPMC_PHYS, OMAP34XX_GPMC_VIRT);
85 		if (BETWEEN(p, OMAP343X_SMS_PHYS, OMAP343X_SMS_SIZE))
86 			return XLATE(p, OMAP343X_SMS_PHYS, OMAP343X_SMS_VIRT);
87 		if (BETWEEN(p, OMAP343X_SDRC_PHYS, OMAP343X_SDRC_SIZE))
88 			return XLATE(p, OMAP343X_SDRC_PHYS, OMAP343X_SDRC_VIRT);
89 		if (BETWEEN(p, L4_PER_34XX_PHYS, L4_PER_34XX_SIZE))
90 			return XLATE(p, L4_PER_34XX_PHYS, L4_PER_34XX_VIRT);
91 		if (BETWEEN(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_SIZE))
92 			return XLATE(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_VIRT);
93 	}
94 #endif
95 
96 	return __arm_ioremap(p, size, type);
97 }
98 EXPORT_SYMBOL(omap_ioremap);
99 
omap_iounmap(volatile void __iomem * addr)100 void omap_iounmap(volatile void __iomem *addr)
101 {
102 	unsigned long virt = (unsigned long)addr;
103 
104 	if (virt >= VMALLOC_START && virt < VMALLOC_END)
105 		__iounmap(addr);
106 }
107 EXPORT_SYMBOL(omap_iounmap);
108