Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300

* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300: (44 commits)
  MN10300: Save frame pointer in thread_info struct rather than global var
  MN10300: Change "Matsushita" to "Panasonic".
  MN10300: Create a defconfig for the ASB2364 board
  MN10300: Update the ASB2303 defconfig
  MN10300: ASB2364: Add support for SMSC911X and SMC911X
  MN10300: ASB2364: Handle the IRQ multiplexer in the FPGA
  MN10300: Generic time support
  MN10300: Specify an ELF HWCAP flag for MN10300 Atomic Operations Unit support
  MN10300: Map userspace atomic op regs as a vmalloc page
  MN10300: And Panasonic AM34 subarch and implement SMP
  MN10300: Delete idle_timestamp from irq_cpustat_t
  MN10300: Make various interrupt priority settings configurable
  MN10300: Optimise do_csum()
  MN10300: Implement atomic ops using atomic ops unit
  MN10300: Make the FPU operate in non-lazy mode under SMP
  MN10300: SMP TLB flushing
  MN10300: Use the [ID]PTEL2 registers rather than [ID]PTEL for TLB control
  MN10300: Make the use of PIDR to mark TLB entries controllable
  MN10300: Rename __flush_tlb*() to local_flush_tlb*()
  MN10300: AM34 erratum requires MMUCTR read and write on exception entry
  ...

1 files changed, 151 insertions, 0 deletions

diff --git a/arch/mn10300/unit-asb2364/include/unit/serial.h b/arch/mn10300/unit-asb2364/include/unit/serial.h
new file mode 100644
index 0000000..7f048bb
--- /dev/null
+++ b/arch/mn10300/unit-asb2364/include/unit/serial.h
@@ -0,0 +1,151 @@
+/* Unit-specific 8250 serial ports
+ *
+ * Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#ifndef _ASM_UNIT_SERIAL_H
+#define _ASM_UNIT_SERIAL_H
+
+#include <asm/cpu-regs.h>
+#include <proc/irq.h>
+#include <unit/fpga-regs.h>
+#include <linux/serial_reg.h>
+
+#define SERIAL_PORT0_BASE_ADDRESS	0xA8200000
+
+#define SERIAL_IRQ	XIRQ1	/* single serial (TL16C550C)	(Lo) */
+
+/*
+ * The ASB2364 has an 12.288 MHz clock
+ * for your UART.
+ *
+ * It'd be nice if someone built a serial card with a 24.576 MHz
+ * clock, since the 16550A is capable of handling a top speed of 1.5
+ * megabits/second; but this requires the faster clock.
+ */
+#define BASE_BAUD (12288000 / 16)
+
+/*
+ * dispose of the /dev/ttyS0 and /dev/ttyS1 serial ports
+ */
+#ifndef CONFIG_GDBSTUB_ON_TTYSx
+
+#define SERIAL_PORT_DFNS						\
+	{								\
+		.baud_base	= BASE_BAUD,				\
+		.irq		= SERIAL_IRQ,				\
+		.flags		= STD_COM_FLAGS,			\
+		.iomem_base	= (u8 *) SERIAL_PORT0_BASE_ADDRESS,	\
+		.iomem_reg_shift = 1,					\
+		.io_type	= SERIAL_IO_MEM,			\
+	},
+
+#ifndef __ASSEMBLY__
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#else /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#define SERIAL_PORT_DFNS /* stolen by gdb-stub */
+
+#if defined(CONFIG_GDBSTUB_ON_TTYS0)
+#define GDBPORT_SERIAL_RX	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_RX  * 4, u8)
+#define GDBPORT_SERIAL_TX	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX  * 4, u8)
+#define GDBPORT_SERIAL_DLL	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLL * 4, u8)
+#define GDBPORT_SERIAL_DLM	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_DLM * 4, u8)
+#define GDBPORT_SERIAL_IER	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 4, u8)
+#define GDBPORT_SERIAL_IIR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IIR * 4, u8)
+#define GDBPORT_SERIAL_FCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_FCR * 4, u8)
+#define GDBPORT_SERIAL_LCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LCR * 4, u8)
+#define GDBPORT_SERIAL_MCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
+#define GDBPORT_SERIAL_LSR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
+#define GDBPORT_SERIAL_MSR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
+#define GDBPORT_SERIAL_SCR	__SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_SCR * 4, u8)
+#define GDBPORT_SERIAL_IRQ	SERIAL_IRQ
+
+#elif defined(CONFIG_GDBSTUB_ON_TTYS1)
+#error The ASB2364 does not have a /dev/ttyS1
+#endif
+
+#ifndef __ASSEMBLY__
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+	char ch;
+
+#define LSR_WAIT_FOR(STATE)	\
+	do {} while (!(GDBPORT_SERIAL_LSR & UART_LSR_##STATE))
+#define FLOWCTL_QUERY(LINE)	\
+	({ GDBPORT_SERIAL_MSR & UART_MSR_##LINE; })
+#define FLOWCTL_WAIT_FOR(LINE)	\
+	do {} while (!(GDBPORT_SERIAL_MSR & UART_MSR_##LINE))
+#define FLOWCTL_CLEAR(LINE)	\
+	do { GDBPORT_SERIAL_MCR &= ~UART_MCR_##LINE; } while (0)
+#define FLOWCTL_SET(LINE)	\
+	do { GDBPORT_SERIAL_MCR |= UART_MCR_##LINE; } while (0)
+
+	FLOWCTL_SET(DTR);
+
+	for (; n > 0; n--) {
+		LSR_WAIT_FOR(THRE);
+		FLOWCTL_WAIT_FOR(CTS);
+
+		ch = *p++;
+		if (ch == 0x0a) {
+			GDBPORT_SERIAL_TX = 0x0d;
+			LSR_WAIT_FOR(THRE);
+			FLOWCTL_WAIT_FOR(CTS);
+		}
+		GDBPORT_SERIAL_TX = ch;
+	}
+
+	FLOWCTL_CLEAR(DTR);
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#define SERIAL_INITIALIZE					\
+do {								\
+	/* release reset */					\
+	ASB2364_FPGA_REG_RESET_UART = 0x0001;			\
+	SyncExBus();						\
+} while (0)
+
+#define SERIAL_CHECK_INTERRUPT					\
+do {								\
+	if ((ASB2364_FPGA_REG_IRQ_UART & 0x0001) == 0x0001) {	\
+		return IRQ_NONE;				\
+	}							\
+} while (0)
+
+#define SERIAL_CLEAR_INTERRUPT					\
+do {								\
+	ASB2364_FPGA_REG_IRQ_UART = 0x0001;			\
+	SyncExBus();						\
+} while (0)
+
+#define SERIAL_SET_INT_MASK					\
+do {								\
+	ASB2364_FPGA_REG_MASK_UART = 0x0001;			\
+	SyncExBus();						\
+} while (0)
+
+#define SERIAL_CLEAR_INT_MASK					\
+do {								\
+	ASB2364_FPGA_REG_MASK_UART = 0x0000;			\
+	SyncExBus();						\
+} while (0)
+
+#endif /* _ASM_UNIT_SERIAL_H */