1 /* $Id: cf-enabler.c,v 1.4 2004/02/22 22:44:36 kkojima Exp $
3 * linux/drivers/block/cf-enabler.c
5 * Copyright (C) 1999 Niibe Yutaka
6 * Copyright (C) 2000 Toshiharu Nozawa
7 * Copyright (C) 2001 A&D Co., Ltd.
9 * Enable the CF configuration.
12 #include <linux/init.h>
14 #include <linux/vmalloc.h>
15 #include <linux/interrupt.h>
20 * You can connect Compact Flash directly to the bus of SuperH.
21 * This is the enabler for that.
23 * SIM: How generic is this really? It looks pretty board, or at
24 * least SH sub-type, specific to me.
25 * I know it doesn't work on the Overdrive!
29 * 0xB8000000 : Attribute
30 * 0xB8001000 : Common Memory
33 #if defined(CONFIG_CPU_SH4)
34 /* SH4 can't access PCMCIA interface through P2 area.
35 * we must remap it with appropriate attribute bit of the page set.
36 * this part is based on Greg Banks' hd64465_ss.c implementation - Masahiro Abe */
38 #if defined(CONFIG_CF_AREA6)
44 /* use this pointer to access to directly connected compact flash io area*/
47 static int __init allocate_cf_area(void)
50 unsigned long paddrbase, psize;
52 /* open I/O area window */
53 paddrbase = virt_to_phys((void*)CONFIG_CF_BASE_ADDR);
55 prot = PAGE_KERNEL_PCC(slot_no, _PAGE_PCC_IO16);
56 cf_io_base = p3_ioremap(paddrbase, psize, prot.pgprot);
58 printk("allocate_cf_area : can't open CF I/O window!\n");
61 /* printk("p3_ioremap(paddr=0x%08lx, psize=0x%08lx, prot=0x%08lx)=0x%08lx\n",
62 paddrbase, psize, prot.pgprot, cf_io_base);*/
64 /* XXX : do we need attribute and common-memory area also? */
70 static int __init cf_init_default(void)
72 /* You must have enabled the card, and set the level interrupt
73 * before reaching this point. Possibly in boot ROM or boot loader.
75 #if defined(CONFIG_CPU_SH4)
78 #if defined(CONFIG_SH_UNKNOWN)
79 /* This should be done in each board's init_xxx_irq. */
86 #if defined(CONFIG_SH_SOLUTION_ENGINE)
88 #elif defined(CONFIG_SH_7722_SOLUTION_ENGINE)
89 #include <asm/se7722.h>
93 * SolutionEngine Seriese
96 * 0xB8400000 : Common Memory
97 * 0xB8500000 : Attribute
101 * 0xB0400000 : Common Memory
102 * 0xB0500000 : Attribute
106 #if defined(CONFIG_SH_SOLUTION_ENGINE) || defined(CONFIG_SH_7722_SOLUTION_ENGINE)
107 static int __init cf_init_se(void)
109 if ((ctrl_inw(MRSHPC_CSR) & 0x000c) != 0)
110 return 0; /* Not detected */
112 if ((ctrl_inw(MRSHPC_CSR) & 0x0080) == 0) {
113 ctrl_outw(0x0674, MRSHPC_CPWCR); /* Card Vcc is 3.3v? */
115 ctrl_outw(0x0678, MRSHPC_CPWCR); /* Card Vcc is 5V */
119 * PC-Card window open
120 * flag == COMMON/ATTRIBUTE/IO
122 /* common window open */
123 ctrl_outw(0x8a84, MRSHPC_MW0CR1);
124 if((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
125 /* common mode & bus width 16bit SWAP = 1*/
126 ctrl_outw(0x0b00, MRSHPC_MW0CR2);
128 /* common mode & bus width 16bit SWAP = 0*/
129 ctrl_outw(0x0300, MRSHPC_MW0CR2);
131 /* attribute window open */
132 ctrl_outw(0x8a85, MRSHPC_MW1CR1);
133 if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
134 /* attribute mode & bus width 16bit SWAP = 1*/
135 ctrl_outw(0x0a00, MRSHPC_MW1CR2);
137 /* attribute mode & bus width 16bit SWAP = 0*/
138 ctrl_outw(0x0200, MRSHPC_MW1CR2);
140 /* I/O window open */
141 ctrl_outw(0x8a86, MRSHPC_IOWCR1);
142 ctrl_outw(0x0008, MRSHPC_CDCR); /* I/O card mode */
143 if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
144 ctrl_outw(0x0a00, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1*/
146 ctrl_outw(0x0200, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0*/
148 ctrl_outw(0x2000, MRSHPC_ICR);
149 ctrl_outb(0x00, PA_MRSHPC_MW2 + 0x206);
150 ctrl_outb(0x42, PA_MRSHPC_MW2 + 0x200);
154 static int __init cf_init_se(void)
160 int __init cf_init(void)
162 if( mach_is_se() || mach_is_7722se() ){
166 return cf_init_default();
169 __initcall (cf_init);