Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: cf-enabler.c,v 1.4 2004/02/22 22:44:36 kkojima Exp $ |
| 2 | * |
| 3 | * linux/drivers/block/cf-enabler.c |
| 4 | * |
| 5 | * Copyright (C) 1999 Niibe Yutaka |
| 6 | * Copyright (C) 2000 Toshiharu Nozawa |
| 7 | * Copyright (C) 2001 A&D Co., Ltd. |
| 8 | * |
| 9 | * Enable the CF configuration. |
| 10 | */ |
| 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/init.h> |
Paul Mundt | 373e68b | 2006-09-27 15:41:24 +0900 | [diff] [blame] | 13 | #include <linux/mm.h> |
| 14 | #include <linux/vmalloc.h> |
Evgeniy Polyakov | 66c5227 | 2007-05-31 13:46:21 +0900 | [diff] [blame] | 15 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <asm/io.h> |
| 17 | #include <asm/irq.h> |
| 18 | |
| 19 | /* |
| 20 | * You can connect Compact Flash directly to the bus of SuperH. |
| 21 | * This is the enabler for that. |
| 22 | * |
| 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! |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * 0xB8000000 : Attribute |
| 30 | * 0xB8001000 : Common Memory |
| 31 | * 0xBA000000 : I/O |
| 32 | */ |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 33 | #if defined(CONFIG_CPU_SH4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | /* SH4 can't access PCMCIA interface through P2 area. |
Simon Arlott | e868d61 | 2007-05-14 08:15:10 +0900 | [diff] [blame] | 35 | * we must remap it with appropriate attribute bit of the page set. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | * this part is based on Greg Banks' hd64465_ss.c implementation - Masahiro Abe */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
| 38 | #if defined(CONFIG_CF_AREA6) |
| 39 | #define slot_no 0 |
| 40 | #else |
| 41 | #define slot_no 1 |
| 42 | #endif |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | /* use this pointer to access to directly connected compact flash io area*/ |
| 45 | void *cf_io_base; |
| 46 | |
| 47 | static int __init allocate_cf_area(void) |
| 48 | { |
| 49 | pgprot_t prot; |
| 50 | unsigned long paddrbase, psize; |
| 51 | |
| 52 | /* open I/O area window */ |
| 53 | paddrbase = virt_to_phys((void*)CONFIG_CF_BASE_ADDR); |
| 54 | psize = PAGE_SIZE; |
| 55 | prot = PAGE_KERNEL_PCC(slot_no, _PAGE_PCC_IO16); |
| 56 | cf_io_base = p3_ioremap(paddrbase, psize, prot.pgprot); |
| 57 | if (!cf_io_base) { |
| 58 | printk("allocate_cf_area : can't open CF I/O window!\n"); |
| 59 | return -ENOMEM; |
| 60 | } |
| 61 | /* printk("p3_ioremap(paddr=0x%08lx, psize=0x%08lx, prot=0x%08lx)=0x%08lx\n", |
Paul Mundt | d7cdc9e | 2006-09-27 15:16:42 +0900 | [diff] [blame] | 62 | paddrbase, psize, prot.pgprot, cf_io_base);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | /* XXX : do we need attribute and common-memory area also? */ |
| 65 | |
| 66 | return 0; |
| 67 | } |
| 68 | #endif |
| 69 | |
| 70 | static int __init cf_init_default(void) |
| 71 | { |
| 72 | /* You must have enabled the card, and set the level interrupt |
| 73 | * before reaching this point. Possibly in boot ROM or boot loader. |
| 74 | */ |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 75 | #if defined(CONFIG_CPU_SH4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | allocate_cf_area(); |
| 77 | #endif |
Paul Mundt | fd8f20e | 2007-05-15 15:38:30 +0900 | [diff] [blame] | 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | #if defined(CONFIG_SH_SOLUTION_ENGINE) |
Paul Mundt | 373e68b | 2006-09-27 15:41:24 +0900 | [diff] [blame] | 83 | #include <asm/se.h> |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 84 | #elif defined(CONFIG_SH_7722_SOLUTION_ENGINE) |
| 85 | #include <asm/se7722.h> |
| 86 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
| 88 | /* |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 89 | * SolutionEngine Seriese |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | * |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 91 | * about MS770xSE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | * 0xB8400000 : Common Memory |
| 93 | * 0xB8500000 : Attribute |
| 94 | * 0xB8600000 : I/O |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 95 | * |
| 96 | * about MS7722SE |
| 97 | * 0xB0400000 : Common Memory |
| 98 | * 0xB0500000 : Attribute |
| 99 | * 0xB0600000 : I/O |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | */ |
| 101 | |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 102 | #if defined(CONFIG_SH_SOLUTION_ENGINE) || defined(CONFIG_SH_7722_SOLUTION_ENGINE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | static int __init cf_init_se(void) |
| 104 | { |
| 105 | if ((ctrl_inw(MRSHPC_CSR) & 0x000c) != 0) |
| 106 | return 0; /* Not detected */ |
| 107 | |
| 108 | if ((ctrl_inw(MRSHPC_CSR) & 0x0080) == 0) { |
| 109 | ctrl_outw(0x0674, MRSHPC_CPWCR); /* Card Vcc is 3.3v? */ |
| 110 | } else { |
| 111 | ctrl_outw(0x0678, MRSHPC_CPWCR); /* Card Vcc is 5V */ |
| 112 | } |
| 113 | |
| 114 | /* |
| 115 | * PC-Card window open |
| 116 | * flag == COMMON/ATTRIBUTE/IO |
| 117 | */ |
| 118 | /* common window open */ |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 119 | ctrl_outw(0x8a84, MRSHPC_MW0CR1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | if((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0) |
| 121 | /* common mode & bus width 16bit SWAP = 1*/ |
| 122 | ctrl_outw(0x0b00, MRSHPC_MW0CR2); |
| 123 | else |
| 124 | /* common mode & bus width 16bit SWAP = 0*/ |
| 125 | ctrl_outw(0x0300, MRSHPC_MW0CR2); |
| 126 | |
| 127 | /* attribute window open */ |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 128 | ctrl_outw(0x8a85, MRSHPC_MW1CR1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0) |
| 130 | /* attribute mode & bus width 16bit SWAP = 1*/ |
| 131 | ctrl_outw(0x0a00, MRSHPC_MW1CR2); |
| 132 | else |
| 133 | /* attribute mode & bus width 16bit SWAP = 0*/ |
| 134 | ctrl_outw(0x0200, MRSHPC_MW1CR2); |
| 135 | |
| 136 | /* I/O window open */ |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 137 | ctrl_outw(0x8a86, MRSHPC_IOWCR1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | ctrl_outw(0x0008, MRSHPC_CDCR); /* I/O card mode */ |
| 139 | if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0) |
| 140 | ctrl_outw(0x0a00, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1*/ |
| 141 | else |
| 142 | ctrl_outw(0x0200, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0*/ |
| 143 | |
| 144 | ctrl_outw(0x2000, MRSHPC_ICR); |
| 145 | ctrl_outb(0x00, PA_MRSHPC_MW2 + 0x206); |
| 146 | ctrl_outb(0x42, PA_MRSHPC_MW2 + 0x200); |
| 147 | return 0; |
| 148 | } |
Evgeniy Polyakov | 66c5227 | 2007-05-31 13:46:21 +0900 | [diff] [blame] | 149 | #else |
| 150 | static int __init cf_init_se(void) |
| 151 | { |
| 152 | return -1; |
| 153 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | #endif |
| 155 | |
| 156 | int __init cf_init(void) |
| 157 | { |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 158 | if( mach_is_se() || mach_is_7722se() ){ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | return cf_init_se(); |
Ryusuke Sakato | 6865f0e | 2007-05-01 09:45:29 +0900 | [diff] [blame] | 160 | } |
| 161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | return cf_init_default(); |
| 163 | } |
| 164 | |
| 165 | __initcall (cf_init); |