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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/serial/8250.h
downloadop-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/serial/8250.h')
-rw-r--r--drivers/serial/8250.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/serial/8250.h b/drivers/serial/8250.h
new file mode 100644
index 0000000..4f3d62f
--- /dev/null
+++ b/drivers/serial/8250.h
@@ -0,0 +1,87 @@
+/*
+ * linux/drivers/char/8250.h
+ *
+ * Driver for 8250/16550-type serial ports
+ *
+ * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
+ *
+ * Copyright (C) 2001 Russell King.
+ *
+ * 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.
+ *
+ * $Id: 8250.h,v 1.8 2002/07/21 21:32:30 rmk Exp $
+ */
+
+#include <linux/config.h>
+
+int serial8250_register_port(struct uart_port *);
+void serial8250_unregister_port(int line);
+void serial8250_suspend_port(int line);
+void serial8250_resume_port(int line);
+
+struct old_serial_port {
+ unsigned int uart;
+ unsigned int baud_base;
+ unsigned int port;
+ unsigned int irq;
+ unsigned int flags;
+ unsigned char hub6;
+ unsigned char io_type;
+ unsigned char *iomem_base;
+ unsigned short iomem_reg_shift;
+};
+
+/*
+ * This replaces serial_uart_config in include/linux/serial.h
+ */
+struct serial8250_config {
+ const char *name;
+ unsigned short fifo_size;
+ unsigned short tx_loadsz;
+ unsigned char fcr;
+ unsigned int flags;
+};
+
+#define UART_CAP_FIFO (1 << 8) /* UART has FIFO */
+#define UART_CAP_EFR (1 << 9) /* UART has EFR */
+#define UART_CAP_SLEEP (1 << 10) /* UART has IER sleep */
+#define UART_CAP_AFE (1 << 11) /* MCR-based hw flow control */
+#define UART_CAP_UUE (1 << 12) /* UART needs IER bit 6 set (Xscale) */
+
+#if defined(__i386__) && (defined(CONFIG_M386) || defined(CONFIG_M486))
+#define _INLINE_ inline
+#else
+#define _INLINE_
+#endif
+
+#define PROBE_RSA (1 << 0)
+#define PROBE_ANY (~0)
+
+#define HIGH_BITS_OFFSET ((sizeof(long)-sizeof(int))*8)
+
+#ifdef CONFIG_SERIAL_8250_SHARE_IRQ
+#define SERIAL8250_SHARE_IRQS 1
+#else
+#define SERIAL8250_SHARE_IRQS 0
+#endif
+
+#if defined(__alpha__) && !defined(CONFIG_PCI)
+/*
+ * Digital did something really horribly wrong with the OUT1 and OUT2
+ * lines on at least some ALPHA's. The failure mode is that if either
+ * is cleared, the machine locks up with endless interrupts.
+ */
+#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1)
+#elif defined(CONFIG_SBC8560)
+/*
+ * WindRiver did something similarly broken on their SBC8560 board. The
+ * UART tristates its IRQ output while OUT2 is clear, but they pulled
+ * the interrupt line _up_ instead of down, so if we register the IRQ
+ * while the UART is in that state, we die in an IRQ storm. */
+#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2)
+#else
+#define ALPHA_KLUDGE_MCR 0
+#endif
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