1 /*
2 * iop13xx custom ioremap implementation
3 * Copyright (c) 2005-2006, Intel Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16 * Place - Suite 330, Boston, MA 02111-1307 USA.
17 *
18 */
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/io.h>
22 #include <mach/hardware.h>
23
24 #include "pci.h"
25
__iop13xx_io(unsigned long io_addr)26 void * __iomem __iop13xx_io(unsigned long io_addr)
27 {
28 void __iomem * io_virt;
29
30 switch (io_addr) {
31 case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA:
32 io_virt = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(io_addr);
33 break;
34 case IOP13XX_PCIX_LOWER_IO_PA ... IOP13XX_PCIX_UPPER_IO_PA:
35 io_virt = (void *) IOP13XX_PCIX_IO_PHYS_TO_VIRT(io_addr);
36 break;
37 default:
38 BUG();
39 }
40
41 return io_virt;
42 }
43 EXPORT_SYMBOL(__iop13xx_io);
44
__iop13xx_ioremap_caller(unsigned long cookie,size_t size,unsigned int mtype,void * caller)45 static void __iomem *__iop13xx_ioremap_caller(unsigned long cookie,
46 size_t size, unsigned int mtype, void *caller)
47 {
48 void __iomem * retval;
49
50 switch (cookie) {
51 case IOP13XX_PCIX_LOWER_MEM_RA ... IOP13XX_PCIX_UPPER_MEM_RA:
52 if (unlikely(!iop13xx_atux_mem_base))
53 retval = NULL;
54 else
55 retval = (void *)(iop13xx_atux_mem_base +
56 (cookie - IOP13XX_PCIX_LOWER_MEM_RA));
57 break;
58 case IOP13XX_PCIE_LOWER_MEM_RA ... IOP13XX_PCIE_UPPER_MEM_RA:
59 if (unlikely(!iop13xx_atue_mem_base))
60 retval = NULL;
61 else
62 retval = (void *)(iop13xx_atue_mem_base +
63 (cookie - IOP13XX_PCIE_LOWER_MEM_RA));
64 break;
65 case IOP13XX_PBI_LOWER_MEM_RA ... IOP13XX_PBI_UPPER_MEM_RA:
66 retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
67 (cookie - IOP13XX_PBI_LOWER_MEM_RA),
68 size, mtype, __builtin_return_address(0));
69 break;
70 case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA:
71 retval = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(cookie);
72 break;
73 case IOP13XX_PCIX_LOWER_IO_PA ... IOP13XX_PCIX_UPPER_IO_PA:
74 retval = (void *) IOP13XX_PCIX_IO_PHYS_TO_VIRT(cookie);
75 break;
76 case IOP13XX_PMMR_PHYS_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_PA:
77 retval = (void *) IOP13XX_PMMR_PHYS_TO_VIRT(cookie);
78 break;
79 default:
80 retval = __arm_ioremap_caller(cookie, size, mtype,
81 caller);
82 }
83
84 return retval;
85 }
86
__iop13xx_iounmap(volatile void __iomem * addr)87 static void __iop13xx_iounmap(volatile void __iomem *addr)
88 {
89 if (iop13xx_atue_mem_base)
90 if (addr >= (void __iomem *) iop13xx_atue_mem_base &&
91 addr < (void __iomem *) (iop13xx_atue_mem_base +
92 iop13xx_atue_mem_size))
93 goto skip;
94
95 if (iop13xx_atux_mem_base)
96 if (addr >= (void __iomem *) iop13xx_atux_mem_base &&
97 addr < (void __iomem *) (iop13xx_atux_mem_base +
98 iop13xx_atux_mem_size))
99 goto skip;
100
101 switch ((u32) addr) {
102 case IOP13XX_PCIE_LOWER_IO_VA ... IOP13XX_PCIE_UPPER_IO_VA:
103 case IOP13XX_PCIX_LOWER_IO_VA ... IOP13XX_PCIX_UPPER_IO_VA:
104 case IOP13XX_PMMR_VIRT_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_VA:
105 goto skip;
106 }
107 __iounmap(addr);
108
109 skip:
110 return;
111 }
112
iop13xx_init_early(void)113 void __init iop13xx_init_early(void)
114 {
115 arch_ioremap_caller = __iop13xx_ioremap_caller;
116 arch_iounmap = __iop13xx_iounmap;
117 }
118