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-rw-r--r--arch/mips/tx4927/common/Makefile12
-rw-r--r--arch/mips/tx4927/common/tx4927_dbgio.c47
-rw-r--r--arch/mips/tx4927/common/tx4927_irq.c584
-rw-r--r--arch/mips/tx4927/common/tx4927_irq_handler.S103
-rw-r--r--arch/mips/tx4927/common/tx4927_prom.c146
-rw-r--r--arch/mips/tx4927/common/tx4927_setup.c237
6 files changed, 1129 insertions, 0 deletions
diff --git a/arch/mips/tx4927/common/Makefile b/arch/mips/tx4927/common/Makefile
new file mode 100644
index 00000000000..8fa126b296e
--- /dev/null
+++ b/arch/mips/tx4927/common/Makefile
@@ -0,0 +1,12 @@
+#
+# Makefile for common code for Toshiba TX4927 based systems
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+
+obj-y += tx4927_prom.o tx4927_setup.o tx4927_irq.o tx4927_irq_handler.o
+
+obj-$(CONFIG_TOSHIBA_FPCIB0) += smsc_fdc37m81x.o
+obj-$(CONFIG_KGDB) += tx4927_dbgio.o
diff --git a/arch/mips/tx4927/common/tx4927_dbgio.c b/arch/mips/tx4927/common/tx4927_dbgio.c
new file mode 100644
index 00000000000..09bdf2baa83
--- /dev/null
+++ b/arch/mips/tx4927/common/tx4927_dbgio.c
@@ -0,0 +1,47 @@
+/*
+ * linux/arch/mips/tx4927/common/tx4927_dbgio.c
+ *
+ * kgdb interface for gdb
+ *
+ * Author: MontaVista Software, Inc.
+ * source@mvista.com
+ *
+ * Copyright 2001-2002 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <asm/mipsregs.h>
+#include <asm/system.h>
+#include <asm/tx4927/tx4927_mips.h>
+
+u8 getDebugChar(void)
+{
+ extern u8 txx9_sio_kdbg_rd(void);
+ return (txx9_sio_kdbg_rd());
+}
+
+
+int putDebugChar(u8 byte)
+{
+ extern int txx9_sio_kdbg_wr( u8 ch );
+ return (txx9_sio_kdbg_wr(byte));
+}
diff --git a/arch/mips/tx4927/common/tx4927_irq.c b/arch/mips/tx4927/common/tx4927_irq.c
new file mode 100644
index 00000000000..5ab2e2b7601
--- /dev/null
+++ b/arch/mips/tx4927/common/tx4927_irq.c
@@ -0,0 +1,584 @@
+/*
+ * Common tx4927 irq handler
+ *
+ * Author: MontaVista Software, Inc.
+ * source@mvista.com
+ *
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/timex.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/irq.h>
+#include <linux/bitops.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mipsregs.h>
+#include <asm/system.h>
+#include <asm/tx4927/tx4927.h>
+
+/*
+ * DEBUG
+ */
+
+#undef TX4927_IRQ_DEBUG
+
+#ifdef TX4927_IRQ_DEBUG
+#define TX4927_IRQ_NONE 0x00000000
+
+#define TX4927_IRQ_INFO ( 1 << 0 )
+#define TX4927_IRQ_WARN ( 1 << 1 )
+#define TX4927_IRQ_EROR ( 1 << 2 )
+
+#define TX4927_IRQ_INIT ( 1 << 5 )
+#define TX4927_IRQ_NEST1 ( 1 << 6 )
+#define TX4927_IRQ_NEST2 ( 1 << 7 )
+#define TX4927_IRQ_NEST3 ( 1 << 8 )
+#define TX4927_IRQ_NEST4 ( 1 << 9 )
+
+#define TX4927_IRQ_CP0_INIT ( 1 << 10 )
+#define TX4927_IRQ_CP0_STARTUP ( 1 << 11 )
+#define TX4927_IRQ_CP0_SHUTDOWN ( 1 << 12 )
+#define TX4927_IRQ_CP0_ENABLE ( 1 << 13 )
+#define TX4927_IRQ_CP0_DISABLE ( 1 << 14 )
+#define TX4927_IRQ_CP0_MASK ( 1 << 15 )
+#define TX4927_IRQ_CP0_ENDIRQ ( 1 << 16 )
+
+#define TX4927_IRQ_PIC_INIT ( 1 << 20 )
+#define TX4927_IRQ_PIC_STARTUP ( 1 << 21 )
+#define TX4927_IRQ_PIC_SHUTDOWN ( 1 << 22 )
+#define TX4927_IRQ_PIC_ENABLE ( 1 << 23 )
+#define TX4927_IRQ_PIC_DISABLE ( 1 << 24 )
+#define TX4927_IRQ_PIC_MASK ( 1 << 25 )
+#define TX4927_IRQ_PIC_ENDIRQ ( 1 << 26 )
+
+#define TX4927_IRQ_ALL 0xffffffff
+#endif
+
+#ifdef TX4927_IRQ_DEBUG
+static const u32 tx4927_irq_debug_flag = (TX4927_IRQ_NONE
+ | TX4927_IRQ_INFO
+ | TX4927_IRQ_WARN | TX4927_IRQ_EROR
+// | TX4927_IRQ_CP0_INIT
+// | TX4927_IRQ_CP0_STARTUP
+// | TX4927_IRQ_CP0_SHUTDOWN
+// | TX4927_IRQ_CP0_ENABLE
+// | TX4927_IRQ_CP0_DISABLE
+// | TX4927_IRQ_CP0_MASK
+// | TX4927_IRQ_CP0_ENDIRQ
+// | TX4927_IRQ_PIC_INIT
+// | TX4927_IRQ_PIC_STARTUP
+// | TX4927_IRQ_PIC_SHUTDOWN
+// | TX4927_IRQ_PIC_ENABLE
+// | TX4927_IRQ_PIC_DISABLE
+// | TX4927_IRQ_PIC_MASK
+// | TX4927_IRQ_PIC_ENDIRQ
+// | TX4927_IRQ_INIT
+// | TX4927_IRQ_NEST1
+// | TX4927_IRQ_NEST2
+// | TX4927_IRQ_NEST3
+// | TX4927_IRQ_NEST4
+ );
+#endif
+
+#ifdef TX4927_IRQ_DEBUG
+#define TX4927_IRQ_DPRINTK(flag,str...) \
+ if ( (tx4927_irq_debug_flag) & (flag) ) \
+ { \
+ char tmp[100]; \
+ sprintf( tmp, str ); \
+ printk( "%s(%s:%u)::%s", __FUNCTION__, __FILE__, __LINE__, tmp ); \
+ }
+#else
+#define TX4927_IRQ_DPRINTK(flag,str...)
+#endif
+
+/*
+ * Forwad definitions for all pic's
+ */
+
+static unsigned int tx4927_irq_cp0_startup(unsigned int irq);
+static void tx4927_irq_cp0_shutdown(unsigned int irq);
+static void tx4927_irq_cp0_enable(unsigned int irq);
+static void tx4927_irq_cp0_disable(unsigned int irq);
+static void tx4927_irq_cp0_mask_and_ack(unsigned int irq);
+static void tx4927_irq_cp0_end(unsigned int irq);
+
+static unsigned int tx4927_irq_pic_startup(unsigned int irq);
+static void tx4927_irq_pic_shutdown(unsigned int irq);
+static void tx4927_irq_pic_enable(unsigned int irq);
+static void tx4927_irq_pic_disable(unsigned int irq);
+static void tx4927_irq_pic_mask_and_ack(unsigned int irq);
+static void tx4927_irq_pic_end(unsigned int irq);
+
+/*
+ * Kernel structs for all pic's
+ */
+
+static DEFINE_SPINLOCK(tx4927_cp0_lock);
+static DEFINE_SPINLOCK(tx4927_pic_lock);
+
+#define TX4927_CP0_NAME "TX4927-CP0"
+static struct hw_interrupt_type tx4927_irq_cp0_type = {
+ .typename = TX4927_CP0_NAME,
+ .startup = tx4927_irq_cp0_startup,
+ .shutdown = tx4927_irq_cp0_shutdown,
+ .enable = tx4927_irq_cp0_enable,
+ .disable = tx4927_irq_cp0_disable,
+ .ack = tx4927_irq_cp0_mask_and_ack,
+ .end = tx4927_irq_cp0_end,
+ .set_affinity = NULL
+};
+
+#define TX4927_PIC_NAME "TX4927-PIC"
+static struct hw_interrupt_type tx4927_irq_pic_type = {
+ .typename = TX4927_PIC_NAME,
+ .startup = tx4927_irq_pic_startup,
+ .shutdown = tx4927_irq_pic_shutdown,
+ .enable = tx4927_irq_pic_enable,
+ .disable = tx4927_irq_pic_disable,
+ .ack = tx4927_irq_pic_mask_and_ack,
+ .end = tx4927_irq_pic_end,
+ .set_affinity = NULL
+};
+
+#define TX4927_PIC_ACTION(s) { no_action, 0, CPU_MASK_NONE, s, NULL, NULL }
+static struct irqaction tx4927_irq_pic_action =
+TX4927_PIC_ACTION(TX4927_PIC_NAME);
+
+#define CCP0_STATUS 12
+#define CCP0_CAUSE 13
+
+/*
+ * Functions for cp0
+ */
+
+#define tx4927_irq_cp0_mask(irq) ( 1 << ( irq-TX4927_IRQ_CP0_BEG+8 ) )
+
+static void
+tx4927_irq_cp0_modify(unsigned cp0_reg, unsigned clr_bits, unsigned set_bits)
+{
+ unsigned long val = 0;
+
+ switch (cp0_reg) {
+ case CCP0_STATUS:
+ val = read_c0_status();
+ break;
+
+ case CCP0_CAUSE:
+ val = read_c0_cause();
+ break;
+
+ }
+
+ val &= (~clr_bits);
+ val |= (set_bits);
+
+ switch (cp0_reg) {
+ case CCP0_STATUS:{
+ write_c0_status(val);
+ break;
+ }
+ case CCP0_CAUSE:{
+ write_c0_cause(val);
+ break;
+ }
+ }
+
+ return;
+}
+
+static void __init tx4927_irq_cp0_init(void)
+{
+ int i;
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_INIT, "beg=%d end=%d\n",
+ TX4927_IRQ_CP0_BEG, TX4927_IRQ_CP0_END);
+
+ for (i = TX4927_IRQ_CP0_BEG; i <= TX4927_IRQ_CP0_END; i++) {
+ irq_desc[i].status = IRQ_DISABLED;
+ irq_desc[i].action = 0;
+ irq_desc[i].depth = 1;
+ irq_desc[i].handler = &tx4927_irq_cp0_type;
+ }
+
+ return;
+}
+
+static unsigned int tx4927_irq_cp0_startup(unsigned int irq)
+{
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_STARTUP, "irq=%d \n", irq);
+
+ tx4927_irq_cp0_enable(irq);
+
+ return (0);
+}
+
+static void tx4927_irq_cp0_shutdown(unsigned int irq)
+{
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_SHUTDOWN, "irq=%d \n", irq);
+
+ tx4927_irq_cp0_disable(irq);
+
+ return;
+}
+
+static void tx4927_irq_cp0_enable(unsigned int irq)
+{
+ unsigned long flags;
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_ENABLE, "irq=%d \n", irq);
+
+ spin_lock_irqsave(&tx4927_cp0_lock, flags);
+
+ tx4927_irq_cp0_modify(CCP0_STATUS, 0, tx4927_irq_cp0_mask(irq));
+
+ spin_unlock_irqrestore(&tx4927_cp0_lock, flags);
+
+ return;
+}
+
+static void tx4927_irq_cp0_disable(unsigned int irq)
+{
+ unsigned long flags;
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_DISABLE, "irq=%d \n", irq);
+
+ spin_lock_irqsave(&tx4927_cp0_lock, flags);
+
+ tx4927_irq_cp0_modify(CCP0_STATUS, tx4927_irq_cp0_mask(irq), 0);
+
+ spin_unlock_irqrestore(&tx4927_cp0_lock, flags);
+
+ return;
+}
+
+static void tx4927_irq_cp0_mask_and_ack(unsigned int irq)
+{
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_MASK, "irq=%d \n", irq);
+
+ tx4927_irq_cp0_disable(irq);
+
+ return;
+}
+
+static void tx4927_irq_cp0_end(unsigned int irq)
+{
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_ENDIRQ, "irq=%d \n", irq);
+
+ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
+ tx4927_irq_cp0_enable(irq);
+ }
+
+ return;
+}
+
+/*
+ * Functions for pic
+ */
+u32 tx4927_irq_pic_addr(int irq)
+{
+ /* MVMCP -- need to formulize this */
+ irq -= TX4927_IRQ_PIC_BEG;
+ switch (irq) {
+ case 17:
+ case 16:
+ case 1:
+ case 0:
+ return (0xff1ff610);
+
+ case 19:
+ case 18:
+ case 3:
+ case 2:
+ return (0xff1ff614);
+
+ case 21:
+ case 20:
+ case 5:
+ case 4:
+ return (0xff1ff618);
+
+ case 23:
+ case 22:
+ case 7:
+ case 6:
+ return (0xff1ff61c);
+
+ case 25:
+ case 24:
+ case 9:
+ case 8:
+ return (0xff1ff620);
+
+ case 27:
+ case 26:
+ case 11:
+ case 10:
+ return (0xff1ff624);
+
+ case 29:
+ case 28:
+ case 13:
+ case 12:
+ return (0xff1ff628);
+
+ case 31:
+ case 30:
+ case 15:
+ case 14:
+ return (0xff1ff62c);
+
+ }
+ return (0);
+}
+
+u32 tx4927_irq_pic_mask(int irq)
+{
+ /* MVMCP -- need to formulize this */
+ irq -= TX4927_IRQ_PIC_BEG;
+ switch (irq) {
+ case 31:
+ case 29:
+ case 27:
+ case 25:
+ case 23:
+ case 21:
+ case 19:
+ case 17:{
+ return (0x07000000);
+ }
+ case 30:
+ case 28:
+ case 26:
+ case 24:
+ case 22:
+ case 20:
+ case 18:
+ case 16:{
+ return (0x00070000);
+ }
+ case 15:
+ case 13:
+ case 11:
+ case 9:
+ case 7:
+ case 5:
+ case 3:
+ case 1:{
+ return (0x00000700);
+ }
+ case 14:
+ case 12:
+ case 10:
+ case 8:
+ case 6:
+ case 4:
+ case 2:
+ case 0:{
+ return (0x00000007);
+ }
+ }
+ return (0x00000000);
+}
+
+static void tx4927_irq_pic_modify(unsigned pic_reg, unsigned clr_bits,
+ unsigned set_bits)
+{
+ unsigned long val = 0;
+
+ val = TX4927_RD(pic_reg);
+ val &= (~clr_bits);
+ val |= (set_bits);
+ TX4927_WR(pic_reg, val);
+
+ return;
+}
+
+static void __init tx4927_irq_pic_init(void)
+{
+ unsigned long flags;
+ int i;
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_INIT, "beg=%d end=%d\n",
+ TX4927_IRQ_PIC_BEG, TX4927_IRQ_PIC_END);
+
+ for (i = TX4927_IRQ_PIC_BEG; i <= TX4927_IRQ_PIC_END; i++) {
+ irq_desc[i].status = IRQ_DISABLED;
+ irq_desc[i].action = 0;
+ irq_desc[i].depth = 2;
+ irq_desc[i].handler = &tx4927_irq_pic_type;
+ }
+
+ setup_irq(TX4927_IRQ_NEST_PIC_ON_CP0, &tx4927_irq_pic_action);
+
+ spin_lock_irqsave(&tx4927_pic_lock, flags);
+
+ TX4927_WR(0xff1ff640, 0x6); /* irq level mask -- only accept hightest */
+ TX4927_WR(0xff1ff600, TX4927_RD(0xff1ff600) | 0x1); /* irq enable */
+
+ spin_unlock_irqrestore(&tx4927_pic_lock, flags);
+
+ return;
+}
+
+static unsigned int tx4927_irq_pic_startup(unsigned int irq)
+{
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_STARTUP, "irq=%d\n", irq);
+
+ tx4927_irq_pic_enable(irq);
+
+ return (0);
+}
+
+static void tx4927_irq_pic_shutdown(unsigned int irq)
+{
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_SHUTDOWN, "irq=%d\n", irq);
+
+ tx4927_irq_pic_disable(irq);
+
+ return;
+}
+
+static void tx4927_irq_pic_enable(unsigned int irq)
+{
+ unsigned long flags;
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_ENABLE, "irq=%d\n", irq);
+
+ spin_lock_irqsave(&tx4927_pic_lock, flags);
+
+ tx4927_irq_pic_modify(tx4927_irq_pic_addr(irq), 0,
+ tx4927_irq_pic_mask(irq));
+
+ spin_unlock_irqrestore(&tx4927_pic_lock, flags);
+
+ return;
+}
+
+static void tx4927_irq_pic_disable(unsigned int irq)
+{
+ unsigned long flags;
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_DISABLE, "irq=%d\n", irq);
+
+ spin_lock_irqsave(&tx4927_pic_lock, flags);
+
+ tx4927_irq_pic_modify(tx4927_irq_pic_addr(irq),
+ tx4927_irq_pic_mask(irq), 0);
+
+ spin_unlock_irqrestore(&tx4927_pic_lock, flags);
+
+ return;
+}
+
+static void tx4927_irq_pic_mask_and_ack(unsigned int irq)
+{
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_MASK, "irq=%d\n", irq);
+
+ tx4927_irq_pic_disable(irq);
+
+ return;
+}
+
+static void tx4927_irq_pic_end(unsigned int irq)
+{
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_ENDIRQ, "irq=%d\n", irq);
+
+ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
+ tx4927_irq_pic_enable(irq);
+ }
+
+ return;
+}
+
+/*
+ * Main init functions
+ */
+void __init tx4927_irq_init(void)
+{
+ extern asmlinkage void tx4927_irq_handler(void);
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "-\n");
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_cp0_init()\n");
+ tx4927_irq_cp0_init();
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_pic_init()\n");
+ tx4927_irq_pic_init();
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT,
+ "=Calling set_except_vector(tx4927_irq_handler)\n");
+ set_except_vector(0, tx4927_irq_handler);
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "+\n");
+
+ return;
+}
+
+int tx4927_irq_nested(void)
+{
+ int sw_irq = 0;
+ u32 level2;
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST1, "-\n");
+
+ level2 = TX4927_RD(0xff1ff6a0);
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST2, "=level2a=0x%x\n", level2);
+
+ if ((level2 & 0x10000) == 0) {
+ level2 &= 0x1f;
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST3, "=level2b=0x%x\n", level2);
+
+ sw_irq = TX4927_IRQ_PIC_BEG + level2;
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST3, "=sw_irq=%d\n", sw_irq);
+
+ if (sw_irq == 27) {
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST4, "=irq-%d\n",
+ sw_irq);
+
+#ifdef CONFIG_TOSHIBA_RBTX4927
+ {
+ sw_irq = toshiba_rbtx4927_irq_nested(sw_irq);
+ }
+#endif
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST4, "=irq+%d\n",
+ sw_irq);
+ }
+ }
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST2, "=sw_irq=%d\n", sw_irq);
+
+ TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST1, "+\n");
+
+ return (sw_irq);
+}
diff --git a/arch/mips/tx4927/common/tx4927_irq_handler.S b/arch/mips/tx4927/common/tx4927_irq_handler.S
new file mode 100644
index 00000000000..ca123e28d1e
--- /dev/null
+++ b/arch/mips/tx4927/common/tx4927_irq_handler.S
@@ -0,0 +1,103 @@
+/*
+ * linux/arch/mips/tx4927/common/tx4927_irq_handler.S
+ *
+ * Primary interrupt handler for tx4927 based systems
+ *
+ * Author: MontaVista Software, Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ * source@mvista.com
+ *
+ * Copyright 2001-2002 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+#include <asm/tx4927/tx4927.h>
+
+ .align 5
+ NESTED(tx4927_irq_handler, PT_SIZE, sp)
+ SAVE_ALL
+ CLI
+ .set at
+
+ mfc0 t0, CP0_CAUSE
+ mfc0 t1, CP0_STATUS
+ and t0, t1
+
+ andi t1, t0, STATUSF_IP7 /* cpu timer */
+ bnez t1, ll_ip7
+
+ /* IP6..IP3 multiplexed -- do not use */
+
+ andi t1, t0, STATUSF_IP2 /* tx4927 pic */
+ bnez t1, ll_ip2
+
+ andi t1, t0, STATUSF_IP0 /* user line 0 */
+ bnez t1, ll_ip0
+
+ andi t1, t0, STATUSF_IP1 /* user line 1 */
+ bnez t1, ll_ip1
+
+ .set reorder
+
+ /* wrong alarm or masked ... */
+ j spurious_interrupt
+ nop
+ END(tx4927_irq_handler)
+
+ .align 5
+
+
+ll_ip7:
+ li a0, TX4927_IRQ_CPU_TIMER
+ move a1, sp
+ jal do_IRQ
+ j ret_from_irq
+
+ll_ip2:
+ jal tx4927_irq_nested
+ nop
+ beqz v0, goto_spurious_interrupt
+ nop
+ move a0, v0
+ move a1, sp
+ jal do_IRQ
+ j ret_from_irq
+
+goto_spurious_interrupt:
+ j spurious_interrupt
+ nop
+
+ll_ip1:
+ li a0, TX4927_IRQ_USER1
+ move a1, sp
+ jal do_IRQ
+ j ret_from_irq
+
+ll_ip0:
+ li a0, TX4927_IRQ_USER0
+ move a1, sp
+ jal do_IRQ
+ j ret_from_irq
diff --git a/arch/mips/tx4927/common/tx4927_prom.c b/arch/mips/tx4927/common/tx4927_prom.c
new file mode 100644
index 00000000000..7d4cbf512d8
--- /dev/null
+++ b/arch/mips/tx4927/common/tx4927_prom.c
@@ -0,0 +1,146 @@
+/*
+ * linux/arch/mips/tx4927/common/tx4927_prom.c
+ *
+ * common tx4927 memory interface
+ *
+ * Author: MontaVista Software, Inc.
+ * source@mvista.com
+ *
+ * Copyright 2001-2002 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/bootmem.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/tx4927/tx4927.h>
+
+static unsigned int __init tx4927_process_sdccr(u64 * addr)
+{
+ u64 val;
+ unsigned int sdccr_ce;
+ unsigned int sdccr_bs;
+ unsigned int sdccr_rs;
+ unsigned int sdccr_cs;
+ unsigned int sdccr_mw;
+ unsigned int bs = 0;
+ unsigned int rs = 0;
+ unsigned int cs = 0;
+ unsigned int mw = 0;
+ unsigned int msize = 0;
+
+ val = (*((vu64 *) (addr)));
+
+ /* MVMCP -- need #defs for these bits masks */
+ sdccr_ce = ((val & (1 << 10)) >> 10);
+ sdccr_bs = ((val & (1 << 8)) >> 8);
+ sdccr_rs = ((val & (3 << 5)) >> 5);
+ sdccr_cs = ((val & (3 << 2)) >> 2);
+ sdccr_mw = ((val & (1 << 0)) >> 0);
+
+ if (sdccr_ce) {
+ switch (sdccr_bs) {
+ case 0:{
+ bs = 2;
+ break;
+ }
+ case 1:{
+ bs = 4;
+ break;
+ }
+ }
+ switch (sdccr_rs) {
+ case 0:{
+ rs = 2048;
+ break;
+ }
+ case 1:{
+ rs = 4096;
+ break;
+ }
+ case 2:{
+ rs = 8192;
+ break;
+ }
+ case 3:{
+ rs = 0;
+ break;
+ }
+ }
+ switch (sdccr_cs) {
+ case 0:{
+ cs = 256;
+ break;
+ }
+ case 1:{
+ cs = 512;
+ break;
+ }
+ case 2:{
+ cs = 1024;
+ break;
+ }
+ case 3:{
+ cs = 2048;
+ break;
+ }
+ }
+ switch (sdccr_mw) {
+ case 0:{
+ mw = 8;
+ break;
+ } /* 8 bytes = 64 bits */
+ case 1:{
+ mw = 4;
+ break;
+ } /* 4 bytes = 32 bits */
+ }
+ }
+
+ /* bytes per chip MB per chip num chips */
+ msize = (((rs * cs * mw) / (1024 * 1024)) * bs);
+
+ return (msize);
+}
+
+
+unsigned int __init tx4927_get_mem_size(void)
+{
+ unsigned int c0;
+ unsigned int c1;
+ unsigned int c2;
+ unsigned int c3;
+ unsigned int total;
+
+ /* MVMCP -- need #defs for these registers */
+ c0 = tx4927_process_sdccr((u64 *) 0xff1f8000);
+ c1 = tx4927_process_sdccr((u64 *) 0xff1f8008);
+ c2 = tx4927_process_sdccr((u64 *) 0xff1f8010);
+ c3 = tx4927_process_sdccr((u64 *) 0xff1f8018);
+ total = c0 + c1 + c2 + c3;
+
+ return (total);
+}
diff --git a/arch/mips/tx4927/common/tx4927_setup.c b/arch/mips/tx4927/common/tx4927_setup.c
new file mode 100644
index 00000000000..16bcbdc6d1c
--- /dev/null
+++ b/arch/mips/tx4927/common/tx4927_setup.c
@@ -0,0 +1,237 @@
+/*
+ * Author: MontaVista Software, Inc.
+ * source@mvista.com
+ *
+ * Copyright 2001-2002 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+ * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/timex.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/irq.h>
+#include <linux/bitops.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mipsregs.h>
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/tx4927/tx4927.h>
+
+
+#undef DEBUG
+
+void __init tx4927_time_init(void);
+void __init tx4927_timer_setup(struct irqaction *irq);
+void dump_cp0(char *key);
+
+
+void (*__wbflush) (void);
+
+static void tx4927_write_buffer_flush(void)
+{
+ __asm__ __volatile__
+ ("sync\n\t" "nop\n\t" "loop: bc0f loop\n\t" "nop\n\t");
+}
+
+
+static void __init tx4927_setup(void)
+{
+ board_time_init = tx4927_time_init;
+ board_timer_setup = tx4927_timer_setup;
+ __wbflush = tx4927_write_buffer_flush;
+
+#ifdef CONFIG_TOSHIBA_RBTX4927
+ {
+ extern void toshiba_rbtx4927_setup(void);
+ toshiba_rbtx4927_setup();
+ }
+#endif
+
+ return;
+}
+
+early_initcall(tx4927_setup);
+
+void __init tx4927_time_init(void)
+{
+
+#ifdef CONFIG_TOSHIBA_RBTX4927
+ {
+ extern void toshiba_rbtx4927_time_init(void);
+ toshiba_rbtx4927_time_init();
+ }
+#endif
+
+ return;
+}
+
+
+void __init tx4927_timer_setup(struct irqaction *irq)
+{
+ u32 count;
+ u32 c1;
+ u32 c2;
+
+ setup_irq(TX4927_IRQ_CPU_TIMER, irq);
+
+ /* to generate the first timer interrupt */
+ c1 = read_c0_count();
+ count = c1 + (mips_hpt_frequency / HZ);
+ write_c0_compare(count);
+ c2 = read_c0_count();
+
+#ifdef CONFIG_TOSHIBA_RBTX4927
+ {
+ extern void toshiba_rbtx4927_timer_setup(struct irqaction
+ *irq);
+ toshiba_rbtx4927_timer_setup(irq);
+ }
+#endif
+
+ return;
+}
+
+
+#ifdef DEBUG
+void print_cp0(char *key, int num, char *name, u32 val)
+{
+ printk("%s cp0:%02d:%s=0x%08x\n", key, num, name, val);
+ return;
+}
+
+indent: Standard input:25: Error:Unexpected end of file
+
+void
+dump_cp0(char *key)
+{
+ if (key == NULL)
+ key = "";
+
+ print_cp0(key, 0, "INDEX ", read_c0_index());
+ print_cp0(key, 2, "ENTRYLO1", read_c0_entrylo0());
+ print_cp0(key, 3, "ENTRYLO2", read_c0_entrylo1());
+ print_cp0(key, 4, "CONTEXT ", read_c0_context());
+ print_cp0(key, 5, "PAGEMASK", read_c0_pagemask());
+ print_cp0(key, 6, "WIRED ", read_c0_wired());
+ //print_cp0(key, 8, "BADVADDR", read_c0_badvaddr());
+ print_cp0(key, 9, "COUNT ", read_c0_count());
+ print_cp0(key, 10, "ENTRYHI ", read_c0_entryhi());
+ print_cp0(key, 11, "COMPARE ", read_c0_compare());
+ print_cp0(key, 12, "STATUS ", read_c0_status());
+ print_cp0(key, 13, "CAUSE ", read_c0_cause() & 0xffff87ff);
+ print_cp0(key, 16, "CONFIG ", read_c0_config());
+ return;
+}
+
+void print_pic(char *key, u32 reg, char *name)
+{
+ printk("%s pic:0x%08x:%s=0x%08x\n", key, reg, name,
+ TX4927_RD(reg));
+ return;
+}
+
+
+void dump_pic(char *key)
+{
+ if (key == NULL)
+ key = "";
+
+ print_pic(key, 0xff1ff600, "IRDEN ");
+ print_pic(key, 0xff1ff604, "IRDM0 ");
+ print_pic(key, 0xff1ff608, "IRDM1 ");
+
+ print_pic(key, 0xff1ff610, "IRLVL0 ");
+ print_pic(key, 0xff1ff614, "IRLVL1 ");
+ print_pic(key, 0xff1ff618, "IRLVL2 ");
+ print_pic(key, 0xff1ff61c, "IRLVL3 ");
+ print_pic(key, 0xff1ff620, "IRLVL4 ");
+ print_pic(key, 0xff1ff624, "IRLVL5 ");
+ print_pic(key, 0xff1ff628, "IRLVL6 ");
+ print_pic(key, 0xff1ff62c, "IRLVL7 ");
+
+ print_pic(key, 0xff1ff640, "IRMSK ");
+ print_pic(key, 0xff1ff660, "IREDC ");
+ print_pic(key, 0xff1ff680, "IRPND ");
+ print_pic(key, 0xff1ff6a0, "IRCS ");
+
+ print_pic(key, 0xff1ff514, "IRFLAG1 "); /* don't read IRLAG0 -- it hangs system */
+
+ print_pic(key, 0xff1ff518, "IRPOL ");
+ print_pic(key, 0xff1ff51c, "IRRCNT ");
+ print_pic(key, 0xff1ff520, "IRMASKINT");
+ print_pic(key, 0xff1ff524, "IRMASKEXT");
+
+ return;
+}
+
+
+void print_addr(char *hdr, char *key, u32 addr)
+{
+ printk("%s %s:0x%08x=0x%08x\n", hdr, key, addr, TX4927_RD(addr));
+ return;
+}
+
+
+void dump_180(char *key)
+{
+ u32 i;
+
+ for (i = 0x80000180; i < 0x80000180 + 0x80; i += 4) {
+ print_addr("180", key, i);
+ }
+ return;
+}
+
+
+void dump_eh0(char *key)
+{
+ int i;
+ extern unsigned long exception_handlers[];
+
+ for (i = (int) exception_handlers;
+ i < (int) (exception_handlers + 20); i += 4) {
+ print_addr("eh0", key, i);
+ }
+
+ return;
+}
+
+void pk0(void)
+{
+ volatile u32 val;
+
+ __asm__ __volatile__("ori %0, $26, 0":"=r"(val)
+ );
+ printk("k0=[0x%08x]\n", val);
+}
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-07 20:43:59 +0000