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authorDavid S. Miller <davem@davemloft.net>2009-04-13 14:41:05 -0700
committerDavid S. Miller <davem@davemloft.net>2009-04-13 14:41:05 -0700
commit83400207a07584539366f6859362db6872809a12 (patch)
treefad187f8b3bebf1b387ec42ef8143e6f4e49a256 /arch/mn10300/unit-asb2305/include/unit/serial.h
parent0d489ffb76de0fe804cf06a9d4d11fa7342d74b9 (diff)
parent80a04d3f2f94fb68b5df05e3ac6697130bc3467a (diff)
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts: MAINTAINERS
Diffstat (limited to 'arch/mn10300/unit-asb2305/include/unit/serial.h')
-rw-r--r--arch/mn10300/unit-asb2305/include/unit/serial.h120
1 files changed, 120 insertions, 0 deletions
diff --git a/arch/mn10300/unit-asb2305/include/unit/serial.h b/arch/mn10300/unit-asb2305/include/unit/serial.h
new file mode 100644
index 00000000000..3bfc9093878
--- /dev/null
+++ b/arch/mn10300/unit-asb2305/include/unit/serial.h
@@ -0,0 +1,120 @@
+/* ASB2305-specific 8250 serial ports
+ *
+ * Copyright (C) 2007 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 Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_UNIT_SERIAL_H
+#define _ASM_UNIT_SERIAL_H
+
+#include <asm/cpu/cpu-regs.h>
+#include <proc/irq.h>
+#include <linux/serial_reg.h>
+
+#define SERIAL_PORT0_BASE_ADDRESS 0xA6FB0000
+#define ASB2305_DEBUG_MCR __SYSREG(0xA6FB0000 + UART_MCR * 2, u8)
+
+#define SERIAL_IRQ XIRQ0 /* Dual serial (PC16552) (Hi) */
+
+/*
+ * dispose of the /dev/ttyS0 serial port
+ */
+#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 = 2, \
+ .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 ASB2305 doesnt have a /dev/ttyS1
+#endif
+
+#ifndef __ASSEMBLY__
+
+#define TTYS0_TX __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_TX * 4, u8)
+#define TTYS0_MCR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MCR * 4, u8)
+#define TTYS0_LSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_LSR * 4, u8)
+#define TTYS0_MSR __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_MSR * 4, u8)
+
+#define LSR_WAIT_FOR(STATE) \
+do { \
+ while (!(TTYS0_LSR & UART_LSR_##STATE)) {} \
+} while (0)
+#define FLOWCTL_WAIT_FOR(LINE) \
+do { \
+ while (!(TTYS0_MSR & UART_MSR_##LINE)) {} \
+} while (0)
+#define FLOWCTL_CLEAR(LINE) \
+do { \
+ TTYS0_MCR &= ~UART_MCR_##LINE; \
+} while (0)
+#define FLOWCTL_SET(LINE) \
+do { \
+ TTYS0_MCR |= UART_MCR_##LINE; \
+} while (0)
+#define FLOWCTL_QUERY(LINE) ({ TTYS0_MSR & UART_MSR_##LINE; })
+
+static inline void __debug_to_serial(const char *p, int n)
+{
+ char ch;
+
+ FLOWCTL_SET(DTR);
+
+ for (; n > 0; n--) {
+ LSR_WAIT_FOR(THRE);
+ FLOWCTL_WAIT_FOR(CTS);
+
+ ch = *p++;
+ if (ch == 0x0a) {
+ TTYS0_TX = 0x0d;
+ LSR_WAIT_FOR(THRE);
+ FLOWCTL_WAIT_FOR(CTS);
+ }
+ TTYS0_TX = ch;
+ }
+
+ FLOWCTL_CLEAR(DTR);
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* CONFIG_GDBSTUB_ON_TTYSx */
+
+#endif /* _ASM_UNIT_SERIAL_H */