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authorMaciej W. Rozycki <macro@linux-mips.org>2005-07-01 12:10:40 -0400
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 14:31:35 -0400
commita5fc9c0bbee8b91025993a49a9176a88380aef3c (patch)
treee68ee45e852028ddde712abb18531777dba6e468 /drivers/tc/tc.c
parent7d7ee221213609319401d1b9d6dc4bf22ab928ea (diff)
Use physical addresses at the interface level, letting drivers remap
them as appropriate. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/tc/tc.c')
-rw-r--r--drivers/tc/tc.c80
1 files changed, 37 insertions, 43 deletions
diff --git a/drivers/tc/tc.c b/drivers/tc/tc.c
index d742c3a90b23..a0e5af638e0e 100644
--- a/drivers/tc/tc.c
+++ b/drivers/tc/tc.c
@@ -10,31 +10,29 @@
10 * Copyright (c) Harald Koerfgen, 1998 10 * Copyright (c) Harald Koerfgen, 1998
11 * Copyright (c) 2001, 2003, 2005 Maciej W. Rozycki 11 * Copyright (c) 2001, 2003, 2005 Maciej W. Rozycki
12 */ 12 */
13#include <linux/string.h>
14#include <linux/init.h> 13#include <linux/init.h>
15#include <linux/ioport.h>
16#include <linux/kernel.h> 14#include <linux/kernel.h>
17#include <linux/module.h> 15#include <linux/module.h>
16#include <linux/string.h>
17#include <linux/types.h>
18 18
19#include <asm/addrspace.h> 19#include <asm/addrspace.h>
20#include <asm/bug.h>
20#include <asm/errno.h> 21#include <asm/errno.h>
22#include <asm/io.h>
23#include <asm/paccess.h>
24
21#include <asm/dec/machtype.h> 25#include <asm/dec/machtype.h>
22#include <asm/dec/prom.h> 26#include <asm/dec/prom.h>
23#include <asm/dec/tcinfo.h> 27#include <asm/dec/tcinfo.h>
24#include <asm/dec/tcmodule.h> 28#include <asm/dec/tcmodule.h>
25#include <asm/dec/interrupts.h> 29#include <asm/dec/interrupts.h>
26#include <asm/paccess.h>
27#include <asm/ptrace.h>
28
29#define TC_DEBUG
30 30
31MODULE_LICENSE("GPL"); 31MODULE_LICENSE("GPL");
32slot_info tc_bus[MAX_SLOT]; 32slot_info tc_bus[MAX_SLOT];
33static int num_tcslots; 33static int num_tcslots;
34static tcinfo *info; 34static tcinfo *info;
35 35
36unsigned long system_base;
37
38/* 36/*
39 * Interface to the world. Read comment in include/asm-mips/tc.h. 37 * Interface to the world. Read comment in include/asm-mips/tc.h.
40 */ 38 */
@@ -97,13 +95,16 @@ unsigned long get_tc_speed(void)
97static void __init tc_probe(unsigned long startaddr, unsigned long size, 95static void __init tc_probe(unsigned long startaddr, unsigned long size,
98 int slots) 96 int slots)
99{ 97{
98 unsigned long slotaddr;
100 int i, slot, err; 99 int i, slot, err;
101 long offset; 100 long offset;
102 unsigned char pattern[4]; 101 u8 pattern[4];
103 unsigned char *module; 102 volatile u8 *module;
104 103
105 for (slot = 0; slot < slots; slot++) { 104 for (slot = 0; slot < slots; slot++) {
106 module = (char *)(startaddr + slot * size); 105 slotaddr = startaddr + slot * size;
106 module = ioremap_nocache(slotaddr, size);
107 BUG_ON(!module);
107 108
108 offset = OLDCARD; 109 offset = OLDCARD;
109 110
@@ -112,8 +113,10 @@ static void __init tc_probe(unsigned long startaddr, unsigned long size,
112 err |= get_dbe(pattern[1], module + OLDCARD + TC_PATTERN1); 113 err |= get_dbe(pattern[1], module + OLDCARD + TC_PATTERN1);
113 err |= get_dbe(pattern[2], module + OLDCARD + TC_PATTERN2); 114 err |= get_dbe(pattern[2], module + OLDCARD + TC_PATTERN2);
114 err |= get_dbe(pattern[3], module + OLDCARD + TC_PATTERN3); 115 err |= get_dbe(pattern[3], module + OLDCARD + TC_PATTERN3);
115 if (err) 116 if (err) {
117 iounmap(module);
116 continue; 118 continue;
119 }
117 120
118 if (pattern[0] != 0x55 || pattern[1] != 0x00 || 121 if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
119 pattern[2] != 0xaa || pattern[3] != 0xff) { 122 pattern[2] != 0xaa || pattern[3] != 0xff) {
@@ -124,16 +127,20 @@ static void __init tc_probe(unsigned long startaddr, unsigned long size,
124 err |= get_dbe(pattern[1], module + TC_PATTERN1); 127 err |= get_dbe(pattern[1], module + TC_PATTERN1);
125 err |= get_dbe(pattern[2], module + TC_PATTERN2); 128 err |= get_dbe(pattern[2], module + TC_PATTERN2);
126 err |= get_dbe(pattern[3], module + TC_PATTERN3); 129 err |= get_dbe(pattern[3], module + TC_PATTERN3);
127 if (err) 130 if (err) {
131 iounmap(module);
128 continue; 132 continue;
133 }
129 } 134 }
130 135
131 if (pattern[0] != 0x55 || pattern[1] != 0x00 || 136 if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
132 pattern[2] != 0xaa || pattern[3] != 0xff) 137 pattern[2] != 0xaa || pattern[3] != 0xff) {
138 iounmap(module);
133 continue; 139 continue;
140 }
134 141
135 tc_bus[slot].base_addr = (unsigned long)module; 142 tc_bus[slot].base_addr = slotaddr;
136 for(i = 0; i < 8; i++) { 143 for (i = 0; i < 8; i++) {
137 tc_bus[slot].firmware[i] = 144 tc_bus[slot].firmware[i] =
138 module[TC_FIRM_VER + offset + 4 * i]; 145 module[TC_FIRM_VER + offset + 4 * i];
139 tc_bus[slot].vendor[i] = 146 tc_bus[slot].vendor[i] =
@@ -171,6 +178,8 @@ static void __init tc_probe(unsigned long startaddr, unsigned long size,
171 tc_bus[slot].interrupt = -1; 178 tc_bus[slot].interrupt = -1;
172 break; 179 break;
173 } 180 }
181
182 iounmap(module);
174 } 183 }
175} 184}
176 185
@@ -196,8 +205,8 @@ static int __init tc_init(void)
196 tc_bus[i].flags = FREE; 205 tc_bus[i].flags = FREE;
197 } 206 }
198 207
199 info = (tcinfo *) rex_gettcinfo(); 208 info = rex_gettcinfo();
200 slot0addr = (unsigned long)CKSEG1ADDR(rex_slot_address(0)); 209 slot0addr = CPHYSADDR((long)rex_slot_address(0));
201 210
202 switch (mips_machtype) { 211 switch (mips_machtype) {
203 case MACH_DS5000_200: 212 case MACH_DS5000_200:
@@ -216,35 +225,21 @@ static int __init tc_init(void)
216 225
217 tc_clock = 10000 / info->clk_period; 226 tc_clock = 10000 / info->clk_period;
218 227
219 if (TURBOCHANNEL && info->slot_size && slot0addr) { 228 if (info->slot_size && slot0addr) {
220 printk("TURBOchannel rev. %1d at %2d.%1d MHz ", info->revision, 229 pr_info("TURBOchannel rev. %d at %d.%d MHz (with%s parity)\n",
221 tc_clock / 10, tc_clock % 10); 230 info->revision, tc_clock / 10, tc_clock % 10,
222 printk("(with%s parity)\n", info->parity ? "" : "out"); 231 info->parity ? "" : "out");
223 232
224 slot_size = info->slot_size << 20; 233 slot_size = info->slot_size << 20;
225 234
226 tc_probe(slot0addr, slot_size, num_tcslots); 235 tc_probe(slot0addr, slot_size, num_tcslots);
227 236
228 /* 237 for (i = 0; i < num_tcslots; i++) {
229 * All TURBOchannel DECstations have the onboard devices 238 if (!tc_bus[i].base_addr)
230 * where the (num_tcslots + 0 or 1 on DS5k/xx) Option Module 239 continue;
231 * would be. 240 pr_info(" slot %d: %s %s %s\n", i, tc_bus[i].vendor,
232 */ 241 tc_bus[i].name, tc_bus[i].firmware);
233 if(mips_machtype == MACH_DS5000_XX) 242 }
234 i = 1;
235 else
236 i = 0;
237
238 system_base = slot0addr + slot_size * (num_tcslots + i);
239
240#ifdef TC_DEBUG
241 for (i = 0; i < num_tcslots; i++)
242 if (tc_bus[i].base_addr) {
243 printk(" slot %d: ", i);
244 printk("%s %s %s\n", tc_bus[i].vendor,
245 tc_bus[i].name, tc_bus[i].firmware);
246 }
247#endif
248 } 243 }
249 244
250 return 0; 245 return 0;
@@ -258,4 +253,3 @@ EXPORT_SYMBOL(release_tc_card);
258EXPORT_SYMBOL(get_tc_base_addr); 253EXPORT_SYMBOL(get_tc_base_addr);
259EXPORT_SYMBOL(get_tc_irq_nr); 254EXPORT_SYMBOL(get_tc_irq_nr);
260EXPORT_SYMBOL(get_tc_speed); 255EXPORT_SYMBOL(get_tc_speed);
261EXPORT_SYMBOL(system_base);