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_ioremap_caller(phys_addr_t cookie,size_t size,unsigned int mtype,void * caller)26 static void __iomem *__iop13xx_ioremap_caller(phys_addr_t cookie,
27 size_t size, unsigned int mtype, void *caller)
28 {
29 void __iomem * retval;
30
31 switch (cookie) {
32 case IOP13XX_PCIX_LOWER_MEM_RA ... IOP13XX_PCIX_UPPER_MEM_RA:
33 if (unlikely(!iop13xx_atux_mem_base))
34 retval = NULL;
35 else
36 retval = (iop13xx_atux_mem_base +
37 (cookie - IOP13XX_PCIX_LOWER_MEM_RA));
38 break;
39 case IOP13XX_PCIE_LOWER_MEM_RA ... IOP13XX_PCIE_UPPER_MEM_RA:
40 if (unlikely(!iop13xx_atue_mem_base))
41 retval = NULL;
42 else
43 retval = (iop13xx_atue_mem_base +
44 (cookie - IOP13XX_PCIE_LOWER_MEM_RA));
45 break;
46 case IOP13XX_PBI_LOWER_MEM_RA ... IOP13XX_PBI_UPPER_MEM_RA:
47 retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
48 (cookie - IOP13XX_PBI_LOWER_MEM_RA),
49 size, mtype, __builtin_return_address(0));
50 break;
51 case IOP13XX_PMMR_PHYS_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_PA:
52 retval = IOP13XX_PMMR_PHYS_TO_VIRT(cookie);
53 break;
54 default:
55 retval = __arm_ioremap_caller(cookie, size, mtype,
56 caller);
57 }
58
59 return retval;
60 }
61
__iop13xx_iounmap(volatile void __iomem * addr)62 static void __iop13xx_iounmap(volatile void __iomem *addr)
63 {
64 if (iop13xx_atue_mem_base)
65 if (addr >= (void __iomem *) iop13xx_atue_mem_base &&
66 addr < (void __iomem *) (iop13xx_atue_mem_base +
67 iop13xx_atue_mem_size))
68 goto skip;
69
70 if (iop13xx_atux_mem_base)
71 if (addr >= (void __iomem *) iop13xx_atux_mem_base &&
72 addr < (void __iomem *) (iop13xx_atux_mem_base +
73 iop13xx_atux_mem_size))
74 goto skip;
75
76 switch ((u32) addr) {
77 case (u32)IOP13XX_PMMR_VIRT_MEM_BASE ... (u32)IOP13XX_PMMR_UPPER_MEM_VA:
78 goto skip;
79 }
80 __iounmap(addr);
81
82 skip:
83 return;
84 }
85
iop13xx_init_early(void)86 void __init iop13xx_init_early(void)
87 {
88 arch_ioremap_caller = __iop13xx_ioremap_caller;
89 arch_iounmap = __iop13xx_iounmap;
90 }
91