aboutsummaryrefslogtreecommitdiff
path: root/drivers/tc
diff options
context:
space:
mode:
authorMaciej W. Rozycki <macro@linux-mips.org>2005-07-01 16:10:40 +0000
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 19:31:35 +0100
commita5fc9c0bbee8b91025993a49a9176a88380aef3c (patch)
treee68ee45e852028ddde712abb18531777dba6e468 /drivers/tc
parent7d7ee221213609319401d1b9d6dc4bf22ab928ea (diff)
downloadlinux-linaro-stable-a5fc9c0bbee8b91025993a49a9176a88380aef3c.tar.gz
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')
-rw-r--r--drivers/tc/tc.c80
-rw-r--r--drivers/tc/zs.c20
2 files changed, 43 insertions, 57 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 @@
* Copyright (c) Harald Koerfgen, 1998
* Copyright (c) 2001, 2003, 2005 Maciej W. Rozycki
*/
-#include <linux/string.h>
#include <linux/init.h>
-#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/types.h>
#include <asm/addrspace.h>
+#include <asm/bug.h>
#include <asm/errno.h>
+#include <asm/io.h>
+#include <asm/paccess.h>
+
#include <asm/dec/machtype.h>
#include <asm/dec/prom.h>
#include <asm/dec/tcinfo.h>
#include <asm/dec/tcmodule.h>
#include <asm/dec/interrupts.h>
-#include <asm/paccess.h>
-#include <asm/ptrace.h>
-
-#define TC_DEBUG
MODULE_LICENSE("GPL");
slot_info tc_bus[MAX_SLOT];
static int num_tcslots;
static tcinfo *info;
-unsigned long system_base;
-
/*
* Interface to the world. Read comment in include/asm-mips/tc.h.
*/
@@ -97,13 +95,16 @@ unsigned long get_tc_speed(void)
static void __init tc_probe(unsigned long startaddr, unsigned long size,
int slots)
{
+ unsigned long slotaddr;
int i, slot, err;
long offset;
- unsigned char pattern[4];
- unsigned char *module;
+ u8 pattern[4];
+ volatile u8 *module;
for (slot = 0; slot < slots; slot++) {
- module = (char *)(startaddr + slot * size);
+ slotaddr = startaddr + slot * size;
+ module = ioremap_nocache(slotaddr, size);
+ BUG_ON(!module);
offset = OLDCARD;
@@ -112,8 +113,10 @@ static void __init tc_probe(unsigned long startaddr, unsigned long size,
err |= get_dbe(pattern[1], module + OLDCARD + TC_PATTERN1);
err |= get_dbe(pattern[2], module + OLDCARD + TC_PATTERN2);
err |= get_dbe(pattern[3], module + OLDCARD + TC_PATTERN3);
- if (err)
+ if (err) {
+ iounmap(module);
continue;
+ }
if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
pattern[2] != 0xaa || pattern[3] != 0xff) {
@@ -124,16 +127,20 @@ static void __init tc_probe(unsigned long startaddr, unsigned long size,
err |= get_dbe(pattern[1], module + TC_PATTERN1);
err |= get_dbe(pattern[2], module + TC_PATTERN2);
err |= get_dbe(pattern[3], module + TC_PATTERN3);
- if (err)
+ if (err) {
+ iounmap(module);
continue;
+ }
}
if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
- pattern[2] != 0xaa || pattern[3] != 0xff)
+ pattern[2] != 0xaa || pattern[3] != 0xff) {
+ iounmap(module);
continue;
+ }
- tc_bus[slot].base_addr = (unsigned long)module;
- for(i = 0; i < 8; i++) {
+ tc_bus[slot].base_addr = slotaddr;
+ for (i = 0; i < 8; i++) {
tc_bus[slot].firmware[i] =
module[TC_FIRM_VER + offset + 4 * i];
tc_bus[slot].vendor[i] =
@@ -171,6 +178,8 @@ static void __init tc_probe(unsigned long startaddr, unsigned long size,
tc_bus[slot].interrupt = -1;
break;
}
+
+ iounmap(module);
}
}
@@ -196,8 +205,8 @@ static int __init tc_init(void)
tc_bus[i].flags = FREE;
}
- info = (tcinfo *) rex_gettcinfo();
- slot0addr = (unsigned long)CKSEG1ADDR(rex_slot_address(0));
+ info = rex_gettcinfo();
+ slot0addr = CPHYSADDR((long)rex_slot_address(0));
switch (mips_machtype) {
case MACH_DS5000_200:
@@ -216,35 +225,21 @@ static int __init tc_init(void)
tc_clock = 10000 / info->clk_period;
- if (TURBOCHANNEL && info->slot_size && slot0addr) {
- printk("TURBOchannel rev. %1d at %2d.%1d MHz ", info->revision,
- tc_clock / 10, tc_clock % 10);
- printk("(with%s parity)\n", info->parity ? "" : "out");
+ if (info->slot_size && slot0addr) {
+ pr_info("TURBOchannel rev. %d at %d.%d MHz (with%s parity)\n",
+ info->revision, tc_clock / 10, tc_clock % 10,
+ info->parity ? "" : "out");
slot_size = info->slot_size << 20;
tc_probe(slot0addr, slot_size, num_tcslots);
- /*
- * All TURBOchannel DECstations have the onboard devices
- * where the (num_tcslots + 0 or 1 on DS5k/xx) Option Module
- * would be.
- */
- if(mips_machtype == MACH_DS5000_XX)
- i = 1;
- else
- i = 0;
-
- system_base = slot0addr + slot_size * (num_tcslots + i);
-
-#ifdef TC_DEBUG
- for (i = 0; i < num_tcslots; i++)
- if (tc_bus[i].base_addr) {
- printk(" slot %d: ", i);
- printk("%s %s %s\n", tc_bus[i].vendor,
- tc_bus[i].name, tc_bus[i].firmware);
- }
-#endif
+ for (i = 0; i < num_tcslots; i++) {
+ if (!tc_bus[i].base_addr)
+ continue;
+ pr_info(" slot %d: %s %s %s\n", i, tc_bus[i].vendor,
+ tc_bus[i].name, tc_bus[i].firmware);
+ }
}
return 0;
@@ -258,4 +253,3 @@ EXPORT_SYMBOL(release_tc_card);
EXPORT_SYMBOL(get_tc_base_addr);
EXPORT_SYMBOL(get_tc_irq_nr);
EXPORT_SYMBOL(get_tc_speed);
-EXPORT_SYMBOL(system_base);
diff --git a/drivers/tc/zs.c b/drivers/tc/zs.c
index 0e302ae5924c..c52af73a251b 100644
--- a/drivers/tc/zs.c
+++ b/drivers/tc/zs.c
@@ -65,14 +65,14 @@
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/bootinfo.h>
-#include <asm/dec/serial.h>
-#ifdef CONFIG_MACH_DECSTATION
#include <asm/dec/interrupts.h>
+#include <asm/dec/ioasic_addrs.h>
#include <asm/dec/machtype.h>
+#include <asm/dec/serial.h>
+#include <asm/dec/system.h>
#include <asm/dec/tc.h>
-#include <asm/dec/ioasic_addrs.h>
-#endif
+
#ifdef CONFIG_KGDB
#include <asm/kgdb.h>
#endif
@@ -1616,30 +1616,22 @@ static void __init probe_sccs(void)
return;
}
- /*
- * When serial console is activated, tc_init has not been called yet
- * and system_base is undefined. Unfortunately we have to hardcode
- * system_base for this case :-(. HK
- */
switch(mips_machtype) {
#ifdef CONFIG_MACH_DECSTATION
case MACH_DS5000_2X0:
case MACH_DS5900:
- system_base = CKSEG1ADDR(0x1f800000);
n_chips = 2;
zs_parms = &ds_parms;
zs_parms->irq0 = dec_interrupt[DEC_IRQ_SCC0];
zs_parms->irq1 = dec_interrupt[DEC_IRQ_SCC1];
break;
case MACH_DS5000_1XX:
- system_base = CKSEG1ADDR(0x1c000000);
n_chips = 2;
zs_parms = &ds_parms;
zs_parms->irq0 = dec_interrupt[DEC_IRQ_SCC0];
zs_parms->irq1 = dec_interrupt[DEC_IRQ_SCC1];
break;
case MACH_DS5000_XX:
- system_base = CKSEG1ADDR(0x1c000000);
n_chips = 1;
zs_parms = &ds_parms;
zs_parms->irq0 = dec_interrupt[DEC_IRQ_SCC0];
@@ -1661,10 +1653,10 @@ static void __init probe_sccs(void)
* The sccs reside on the high byte of the 16 bit IOBUS
*/
zs_channels[n_channels].control =
- (volatile unsigned char *)system_base +
+ (volatile void *)CKSEG1ADDR(dec_kn_slot_base +
(0 == chip ? zs_parms->scc0 : zs_parms->scc1) +
(0 == channel ? zs_parms->channel_a_offset :
- zs_parms->channel_b_offset);
+ zs_parms->channel_b_offset));
zs_channels[n_channels].data =
zs_channels[n_channels].control + 4;