Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 103 insertions, 0 deletions

diff --git a/include/grub/i386/pit.h b/include/grub/i386/pit.h
new file mode 100644
index 0000000..4bd49d4
--- /dev/null
+++ b/include/grub/i386/pit.h
@@ -0,0 +1,103 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2008  Free Software Foundation, Inc.
+ *
+ *  GRUB 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef KERNEL_CPU_PIT_HEADER
+#define KERNEL_CPU_PIT_HEADER   1
+
+#include <grub/types.h>
+#include <grub/err.h>
+
+enum
+  {
+    /* The PIT channel value ports.  You can write to and read from them.
+       Do not mess with timer 0 or 1.  */
+    GRUB_PIT_COUNTER_0 = 0x40,
+    GRUB_PIT_COUNTER_1 = 0x41,
+    GRUB_PIT_COUNTER_2 = 0x42,
+    /* The PIT control port.  You can only write to it.  Do not mess with
+       timer 0 or 1.  */
+    GRUB_PIT_CTRL = 0x43,
+    /* The speaker port.  */
+    GRUB_PIT_SPEAKER_PORT = 0x61,
+  };
+
+
+/* The speaker port.  */
+enum
+  {
+    /* If 0, follow state of SPEAKER_DATA bit, otherwise enable output
+       from timer 2.  */
+    GRUB_PIT_SPK_TMR2 = 0x01,
+    /* If SPEAKER_TMR2 is not set, this provides direct input into the
+       speaker.  Otherwise, this enables or disables the output from the
+       timer.  */
+    GRUB_PIT_SPK_DATA = 0x02,
+
+    GRUB_PIT_SPK_TMR2_LATCH = 0x20
+  };
+
+/* The PIT control port.  You can only write to it.  Do not mess with
+   timer 0 or 1.  */
+enum
+  {
+    GRUB_PIT_CTRL_SELECT_MASK = 0xc0,
+    GRUB_PIT_CTRL_SELECT_0 = 0x00,
+    GRUB_PIT_CTRL_SELECT_1 = 0x40,
+    GRUB_PIT_CTRL_SELECT_2 = 0x80,
+
+    /* Read and load control.  */
+    GRUB_PIT_CTRL_READLOAD_MASK= 0x30,
+    GRUB_PIT_CTRL_COUNTER_LATCH = 0x00,	/* Hold timer value until read.  */
+    GRUB_PIT_CTRL_READLOAD_LSB = 0x10,	/* Read/load the LSB.  */
+    GRUB_PIT_CTRL_READLOAD_MSB = 0x20,	/* Read/load the MSB.  */
+    GRUB_PIT_CTRL_READLOAD_WORD = 0x30,	/* Read/load the LSB then the MSB.  */
+
+    /* Mode control.  */
+    GRUB_PIT_CTRL_MODE_MASK = 0x0e,
+    /* Interrupt on terminal count.  Setting the mode sets output to low.
+       When counter is set and terminated, output is set to high.  */
+    GRUB_PIT_CTRL_INTR_ON_TERM = 0x00,
+    /* Programmable one-shot.  When loading counter, output is set to
+       high.  When counter terminated, output is set to low.  Can be
+       triggered again from that point on by setting the gate pin to
+       high.  */
+    GRUB_PIT_CTRL_PROGR_ONE_SHOT = 0x02,
+
+    /* Rate generator.  Output is low for one period of the counter, and
+       high for the other.  */
+    GRUB_PIT_CTRL_RATE_GEN = 0x04,
+
+    /* Square wave generator.  Output is low for one half of the period,
+       and high for the other half.  */
+    GRUB_PIT_CTRL_SQUAREWAVE_GEN = 0x06,
+    /* Software triggered strobe.  Setting the mode sets output to high.
+       When counter is set and terminated, output is set to low.  */
+    GRUB_PIT_CTRL_SOFTSTROBE = 0x08,
+
+    /* Hardware triggered strobe.  Like software triggered strobe, but
+       only starts the counter when the gate pin is set to high.  */
+    GRUB_PIT_CTRL_HARDSTROBE = 0x0a,
+
+
+    /* Count mode.  */
+    GRUB_PIT_CTRL_COUNT_MASK = 0x01,
+    GRUB_PIT_CTRL_COUNT_BINARY = 0x00,	/* 16-bit binary counter.  */
+    GRUB_PIT_CTRL_COUNT_BCD = 0x01	/* 4-decade BCD counter.  */
+  };
+
+#endif /* ! KERNEL_CPU_PIT_HEADER */