4 files changed, 101 insertions, 0 deletions

diff --git a/arch/mips/dec/Makefile b/arch/mips/dec/Makefile
index ed181fdc3ac9..8b790c2900d5 100644
--- a/arch/mips/dec/Makefile
+++ b/arch/mips/dec/Makefile
@@ -6,6 +6,7 @@ obj-y		:= ecc-berr.o int-handler.o ioasic-irq.o kn01-berr.o \
                    kn02-irq.o kn02xa-berr.o reset.o setup.o time.o
 
 obj-$(CONFIG_PROM_CONSOLE)      += promcon.o
+obj-$(CONFIG_TC)                += tc.o
 obj-$(CONFIG_CPU_HAS_WB)        += wbflush.o
 
 EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/dec/prom/identify.c b/arch/mips/dec/prom/identify.c
index 81d5e878ddce..c4e3c1ea0d48 100644
--- a/arch/mips/dec/prom/identify.c
+++ b/arch/mips/dec/prom/identify.c
@@ -88,6 +88,7 @@ static inline void prom_init_kn02(void)
 {
         dec_kn_slot_base = KN02_SLOT_BASE;
         dec_kn_slot_size = KN02_SLOT_SIZE;
+        dec_tc_bus = 1;
 
         dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN02_RTC);
 }
@@ -96,6 +97,7 @@ static inline void prom_init_kn02xa(void)
 {
         dec_kn_slot_base = KN02XA_SLOT_BASE;
         dec_kn_slot_size = IOASIC_SLOT_SIZE;
+        dec_tc_bus = 1;
 
         ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL);
         dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY);
@@ -105,6 +107,7 @@ static inline void prom_init_kn03(void)
 {
         dec_kn_slot_base = KN03_SLOT_BASE;
         dec_kn_slot_size = IOASIC_SLOT_SIZE;
+        dec_tc_bus = 1;
 
         ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL);
         dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY);
diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index 1058e2f409bb..b8a5e75ba0ab 100644
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -53,6 +53,8 @@ unsigned long dec_kn_slot_base, dec_kn_slot_size;
 EXPORT_SYMBOL(dec_kn_slot_base);
 EXPORT_SYMBOL(dec_kn_slot_size);
 
+int dec_tc_bus;
+
 spinlock_t ioasic_ssr_lock;
 
 volatile u32 *ioasic_base;
diff --git a/arch/mips/dec/tc.c b/arch/mips/dec/tc.c
new file mode 100644
index 000000000000..732027c79834
--- /dev/null
+++ b/arch/mips/dec/tc.c
@@ -0,0 +1,95 @@
+/*
+ *      TURBOchannel architecture calls.
+ *
+ *      Copyright (c) Harald Koerfgen, 1998
+ *      Copyright (c) 2001, 2003, 2005, 2006  Maciej W. Rozycki
+ *      Copyright (c) 2005  James Simmons
+ *
+ *      This file is subject to the terms and conditions of the GNU
+ *      General Public License.  See the file "COPYING" in the main
+ *      directory of this archive for more details.
+ */
+#include <linux/compiler.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/tc.h>
+#include <linux/types.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/paccess.h>
+
+#include <asm/dec/interrupts.h>
+#include <asm/dec/prom.h>
+#include <asm/dec/system.h>
+
+/*
+ * Protected read byte from TURBOchannel slot space.
+ */
+int tc_preadb(u8 *valp, void __iomem *addr)
+{
+        return get_dbe(*valp, (u8 *)addr);
+}
+
+/*
+ * Get TURBOchannel bus information as specified by the spec, plus
+ * the slot space base address and the number of slots.
+ */
+int __init tc_bus_get_info(struct tc_bus *tbus)
+{
+        if (!dec_tc_bus)
+                return -ENXIO;
+
+        memcpy(&tbus->info, rex_gettcinfo(), sizeof(tbus->info));
+        tbus->slot_base = CPHYSADDR((long)rex_slot_address(0));
+
+        switch (mips_machtype) {
+        case MACH_DS5000_200:
+                tbus->num_tcslots = 7;
+                break;
+        case MACH_DS5000_2X0:
+        case MACH_DS5900:
+                tbus->ext_slot_base = 0x20000000;
+                tbus->ext_slot_size = 0x20000000;
+                /* fall through */
+        case MACH_DS5000_1XX:
+                tbus->num_tcslots = 3;
+                break;
+        case MACH_DS5000_XX:
+                tbus->num_tcslots = 2;
+        default:
+                break;
+        }
+        return 0;
+}
+
+/*
+ * Get the IRQ for the specified slot.
+ */
+void __init tc_device_get_irq(struct tc_dev *tdev)
+{
+        switch (tdev->slot) {
+        case 0:
+                tdev->interrupt = dec_interrupt[DEC_IRQ_TC0];
+                break;
+        case 1:
+                tdev->interrupt = dec_interrupt[DEC_IRQ_TC1];
+                break;
+        case 2:
+                tdev->interrupt = dec_interrupt[DEC_IRQ_TC2];
+                break;
+        /*
+         * Yuck! DS5000/200 onboard devices
+         */
+        case 5:
+                tdev->interrupt = dec_interrupt[DEC_IRQ_TC5];
+                break;
+        case 6:
+                tdev->interrupt = dec_interrupt[DEC_IRQ_TC6];
+                break;
+        default:
+                tdev->interrupt = -1;
+                break;
+        }
+}