Linux-2.6.12-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!
diff --git a/drivers/acpi/resources/rsirq.c b/drivers/acpi/resources/rsirq.c
new file mode 100644
index 0000000..fd07a87
--- /dev/null
+++ b/drivers/acpi/resources/rsirq.c
@@ -0,0 +1,592 @@
+/*******************************************************************************
+ *
+ * Module Name: rsirq - IRQ resource descriptors
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ */
+
+
+#include <acpi/acpi.h>
+#include <acpi/acresrc.h>
+
+#define _COMPONENT ACPI_RESOURCES
+ ACPI_MODULE_NAME ("rsirq")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_irq_resource
+ *
+ * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
+ * stream
+ * bytes_consumed - Pointer to where the number of bytes
+ * consumed the byte_stream_buffer is
+ * returned
+ * output_buffer - Pointer to the return data buffer
+ * structure_size - Pointer to where the number of bytes
+ * in the return data struct is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Take the resource byte stream and fill out the appropriate
+ * structure pointed to by the output_buffer. Return the
+ * number of bytes consumed from the byte stream.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_irq_resource (
+ u8 *byte_stream_buffer,
+ acpi_size *bytes_consumed,
+ u8 **output_buffer,
+ acpi_size *structure_size)
+{
+ u8 *buffer = byte_stream_buffer;
+ struct acpi_resource *output_struct = (void *) *output_buffer;
+ u16 temp16 = 0;
+ u8 temp8 = 0;
+ u8 index;
+ u8 i;
+ acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_irq);
+
+
+ ACPI_FUNCTION_TRACE ("rs_irq_resource");
+
+
+ /*
+ * The number of bytes consumed are contained in the descriptor
+ * (Bits:0-1)
+ */
+ temp8 = *buffer;
+ *bytes_consumed = (temp8 & 0x03) + 1;
+ output_struct->id = ACPI_RSTYPE_IRQ;
+
+ /*
+ * Point to the 16-bits of Bytes 1 and 2
+ */
+ buffer += 1;
+ ACPI_MOVE_16_TO_16 (&temp16, buffer);
+
+ output_struct->data.irq.number_of_interrupts = 0;
+
+ /* Decode the IRQ bits */
+
+ for (i = 0, index = 0; index < 16; index++) {
+ if ((temp16 >> index) & 0x01) {
+ output_struct->data.irq.interrupts[i] = index;
+ i++;
+ }
+ }
+
+ /* Zero interrupts is valid */
+
+ output_struct->data.irq.number_of_interrupts = i;
+ if (i > 0) {
+ /*
+ * Calculate the structure size based upon the number of interrupts
+ */
+ struct_size += ((acpi_size) i - 1) * 4;
+ }
+
+ /*
+ * Point to Byte 3 if it is used
+ */
+ if (4 == *bytes_consumed) {
+ buffer += 2;
+ temp8 = *buffer;
+
+ /*
+ * Check for HE, LL interrupts
+ */
+ switch (temp8 & 0x09) {
+ case 0x01: /* HE */
+ output_struct->data.irq.edge_level = ACPI_EDGE_SENSITIVE;
+ output_struct->data.irq.active_high_low = ACPI_ACTIVE_HIGH;
+ break;
+
+ case 0x08: /* LL */
+ output_struct->data.irq.edge_level = ACPI_LEVEL_SENSITIVE;
+ output_struct->data.irq.active_high_low = ACPI_ACTIVE_LOW;
+ break;
+
+ default:
+ /*
+ * Only _LL and _HE polarity/trigger interrupts
+ * are allowed (ACPI spec, section "IRQ Format")
+ * so 0x00 and 0x09 are illegal.
+ */
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Invalid interrupt polarity/trigger in resource list, %X\n", temp8));
+ return_ACPI_STATUS (AE_BAD_DATA);
+ }
+
+ /*
+ * Check for sharable
+ */
+ output_struct->data.irq.shared_exclusive = (temp8 >> 3) & 0x01;
+ }
+ else {
+ /*
+ * Assume Edge Sensitive, Active High, Non-Sharable
+ * per ACPI Specification
+ */
+ output_struct->data.irq.edge_level = ACPI_EDGE_SENSITIVE;
+ output_struct->data.irq.active_high_low = ACPI_ACTIVE_HIGH;
+ output_struct->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
+ }
+
+ /*
+ * Set the Length parameter
+ */
+ output_struct->length = (u32) struct_size;
+
+ /*
+ * Return the final size of the structure
+ */
+ *structure_size = struct_size;
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_irq_stream
+ *
+ * PARAMETERS: linked_list - Pointer to the resource linked list
+ * output_buffer - Pointer to the user's return buffer
+ * bytes_consumed - Pointer to where the number of bytes
+ * used in the output_buffer is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Take the linked list resource structure and fills in the
+ * the appropriate bytes in a byte stream
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_irq_stream (
+ struct acpi_resource *linked_list,
+ u8 **output_buffer,
+ acpi_size *bytes_consumed)
+{
+ u8 *buffer = *output_buffer;
+ u16 temp16 = 0;
+ u8 temp8 = 0;
+ u8 index;
+ u8 IRqinfo_byte_needed;
+
+
+ ACPI_FUNCTION_TRACE ("rs_irq_stream");
+
+
+ /*
+ * The descriptor field is set based upon whether a third byte is
+ * needed to contain the IRQ Information.
+ */
+ if (ACPI_EDGE_SENSITIVE == linked_list->data.irq.edge_level &&
+ ACPI_ACTIVE_HIGH == linked_list->data.irq.active_high_low &&
+ ACPI_EXCLUSIVE == linked_list->data.irq.shared_exclusive) {
+ *buffer = 0x22;
+ IRqinfo_byte_needed = FALSE;
+ }
+ else {
+ *buffer = 0x23;
+ IRqinfo_byte_needed = TRUE;
+ }
+
+ buffer += 1;
+ temp16 = 0;
+
+ /*
+ * Loop through all of the interrupts and set the mask bits
+ */
+ for(index = 0;
+ index < linked_list->data.irq.number_of_interrupts;
+ index++) {
+ temp8 = (u8) linked_list->data.irq.interrupts[index];
+ temp16 |= 0x1 << temp8;
+ }
+
+ ACPI_MOVE_16_TO_16 (buffer, &temp16);
+ buffer += 2;
+
+ /*
+ * Set the IRQ Info byte if needed.
+ */
+ if (IRqinfo_byte_needed) {
+ temp8 = 0;
+ temp8 = (u8) ((linked_list->data.irq.shared_exclusive &
+ 0x01) << 4);
+
+ if (ACPI_LEVEL_SENSITIVE == linked_list->data.irq.edge_level &&
+ ACPI_ACTIVE_LOW == linked_list->data.irq.active_high_low) {
+ temp8 |= 0x08;
+ }
+ else {
+ temp8 |= 0x01;
+ }
+
+ *buffer = temp8;
+ buffer += 1;
+ }
+
+ /*
+ * Return the number of bytes consumed in this operation
+ */
+ *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_extended_irq_resource
+ *
+ * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
+ * stream
+ * bytes_consumed - Pointer to where the number of bytes
+ * consumed the byte_stream_buffer is
+ * returned
+ * output_buffer - Pointer to the return data buffer
+ * structure_size - Pointer to where the number of bytes
+ * in the return data struct is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Take the resource byte stream and fill out the appropriate
+ * structure pointed to by the output_buffer. Return the
+ * number of bytes consumed from the byte stream.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_extended_irq_resource (
+ u8 *byte_stream_buffer,
+ acpi_size *bytes_consumed,
+ u8 **output_buffer,
+ acpi_size *structure_size)
+{
+ u8 *buffer = byte_stream_buffer;
+ struct acpi_resource *output_struct = (void *) *output_buffer;
+ u16 temp16 = 0;
+ u8 temp8 = 0;
+ u8 *temp_ptr;
+ u8 index;
+ acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_ext_irq);
+
+
+ ACPI_FUNCTION_TRACE ("rs_extended_irq_resource");
+
+
+ /*
+ * Point past the Descriptor to get the number of bytes consumed
+ */
+ buffer += 1;
+ ACPI_MOVE_16_TO_16 (&temp16, buffer);
+
+ /* Validate minimum descriptor length */
+
+ if (temp16 < 6) {
+ return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
+ }
+
+ *bytes_consumed = temp16 + 3;
+ output_struct->id = ACPI_RSTYPE_EXT_IRQ;
+
+ /*
+ * Point to the Byte3
+ */
+ buffer += 2;
+ temp8 = *buffer;
+
+ output_struct->data.extended_irq.producer_consumer = temp8 & 0x01;
+
+ /*
+ * Check for Interrupt Mode
+ *
+ * The definition of an Extended IRQ changed between ACPI spec v1.0b
+ * and ACPI spec 2.0 (section 6.4.3.6 in both).
+ *
+ * - Edge/Level are defined opposite in the table vs the headers
+ */
+ output_struct->data.extended_irq.edge_level =
+ (temp8 & 0x2) ? ACPI_EDGE_SENSITIVE : ACPI_LEVEL_SENSITIVE;
+
+ /*
+ * Check Interrupt Polarity
+ */
+ output_struct->data.extended_irq.active_high_low = (temp8 >> 2) & 0x1;
+
+ /*
+ * Check for sharable
+ */
+ output_struct->data.extended_irq.shared_exclusive = (temp8 >> 3) & 0x01;
+
+ /*
+ * Point to Byte4 (IRQ Table length)
+ */
+ buffer += 1;
+ temp8 = *buffer;
+
+ /* Must have at least one IRQ */
+
+ if (temp8 < 1) {
+ return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
+ }
+
+ output_struct->data.extended_irq.number_of_interrupts = temp8;
+
+ /*
+ * Add any additional structure size to properly calculate
+ * the next pointer at the end of this function
+ */
+ struct_size += (temp8 - 1) * 4;
+
+ /*
+ * Point to Byte5 (First IRQ Number)
+ */
+ buffer += 1;
+
+ /*
+ * Cycle through every IRQ in the table
+ */
+ for (index = 0; index < temp8; index++) {
+ ACPI_MOVE_32_TO_32 (
+ &output_struct->data.extended_irq.interrupts[index], buffer);
+
+ /* Point to the next IRQ */
+
+ buffer += 4;
+ }
+
+ /*
+ * This will leave us pointing to the Resource Source Index
+ * If it is present, then save it off and calculate the
+ * pointer to where the null terminated string goes:
+ * Each Interrupt takes 32-bits + the 5 bytes of the
+ * stream that are default.
+ *
+ * Note: Some resource descriptors will have an additional null, so
+ * we add 1 to the length.
+ */
+ if (*bytes_consumed >
+ ((acpi_size) output_struct->data.extended_irq.number_of_interrupts * 4) + (5 + 1)) {
+ /* Dereference the Index */
+
+ temp8 = *buffer;
+ output_struct->data.extended_irq.resource_source.index = (u32) temp8;
+
+ /* Point to the String */
+
+ buffer += 1;
+
+ /*
+ * Point the String pointer to the end of this structure.
+ */
+ output_struct->data.extended_irq.resource_source.string_ptr =
+ (char *)((char *) output_struct + struct_size);
+
+ temp_ptr = (u8 *) output_struct->data.extended_irq.resource_source.string_ptr;
+
+ /* Copy the string into the buffer */
+
+ index = 0;
+ while (0x00 != *buffer) {
+ *temp_ptr = *buffer;
+
+ temp_ptr += 1;
+ buffer += 1;
+ index += 1;
+ }
+
+ /*
+ * Add the terminating null
+ */
+ *temp_ptr = 0x00;
+ output_struct->data.extended_irq.resource_source.string_length = index + 1;
+
+ /*
+ * In order for the struct_size to fall on a 32-bit boundary,
+ * calculate the length of the string and expand the
+ * struct_size to the next 32-bit boundary.
+ */
+ temp8 = (u8) (index + 1);
+ struct_size += ACPI_ROUND_UP_to_32_bITS (temp8);
+ }
+ else {
+ output_struct->data.extended_irq.resource_source.index = 0x00;
+ output_struct->data.extended_irq.resource_source.string_length = 0;
+ output_struct->data.extended_irq.resource_source.string_ptr = NULL;
+ }
+
+ /*
+ * Set the Length parameter
+ */
+ output_struct->length = (u32) struct_size;
+
+ /*
+ * Return the final size of the structure
+ */
+ *structure_size = struct_size;
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_rs_extended_irq_stream
+ *
+ * PARAMETERS: linked_list - Pointer to the resource linked list
+ * output_buffer - Pointer to the user's return buffer
+ * bytes_consumed - Pointer to where the number of bytes
+ * used in the output_buffer is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Take the linked list resource structure and fills in the
+ * the appropriate bytes in a byte stream
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_extended_irq_stream (
+ struct acpi_resource *linked_list,
+ u8 **output_buffer,
+ acpi_size *bytes_consumed)
+{
+ u8 *buffer = *output_buffer;
+ u16 *length_field;
+ u8 temp8 = 0;
+ u8 index;
+ char *temp_pointer = NULL;
+
+
+ ACPI_FUNCTION_TRACE ("rs_extended_irq_stream");
+
+
+ /*
+ * The descriptor field is static
+ */
+ *buffer = 0x89;
+ buffer += 1;
+
+ /*
+ * Set a pointer to the Length field - to be filled in later
+ */
+ length_field = ACPI_CAST_PTR (u16, buffer);
+ buffer += 2;
+
+ /*
+ * Set the Interrupt vector flags
+ */
+ temp8 = (u8)(linked_list->data.extended_irq.producer_consumer & 0x01);
+ temp8 |= ((linked_list->data.extended_irq.shared_exclusive & 0x01) << 3);
+
+ /*
+ * Set the Interrupt Mode
+ *
+ * The definition of an Extended IRQ changed between ACPI spec v1.0b
+ * and ACPI spec 2.0 (section 6.4.3.6 in both). This code does not
+ * implement the more restrictive definition of 1.0b
+ *
+ * - Edge/Level are defined opposite in the table vs the headers
+ */
+ if (ACPI_EDGE_SENSITIVE == linked_list->data.extended_irq.edge_level) {
+ temp8 |= 0x2;
+ }
+
+ /*
+ * Set the Interrupt Polarity
+ */
+ temp8 |= ((linked_list->data.extended_irq.active_high_low & 0x1) << 2);
+
+ *buffer = temp8;
+ buffer += 1;
+
+ /*
+ * Set the Interrupt table length
+ */
+ temp8 = (u8) linked_list->data.extended_irq.number_of_interrupts;
+
+ *buffer = temp8;
+ buffer += 1;
+
+ for (index = 0; index < linked_list->data.extended_irq.number_of_interrupts;
+ index++) {
+ ACPI_MOVE_32_TO_32 (buffer,
+ &linked_list->data.extended_irq.interrupts[index]);
+ buffer += 4;
+ }
+
+ /*
+ * Resource Source Index and Resource Source are optional
+ */
+ if (0 != linked_list->data.extended_irq.resource_source.string_length) {
+ *buffer = (u8) linked_list->data.extended_irq.resource_source.index;
+ buffer += 1;
+
+ temp_pointer = (char *) buffer;
+
+ /*
+ * Copy the string
+ */
+ ACPI_STRCPY (temp_pointer,
+ linked_list->data.extended_irq.resource_source.string_ptr);
+
+ /*
+ * Buffer needs to be set to the length of the sting + one for the
+ * terminating null
+ */
+ buffer += (acpi_size)(ACPI_STRLEN (linked_list->data.extended_irq.resource_source.string_ptr) + 1);
+ }
+
+ /*
+ * Return the number of bytes consumed in this operation
+ */
+ *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
+
+ /*
+ * Set the length field to the number of bytes consumed
+ * minus the header size (3 bytes)
+ */
+ *length_field = (u16) (*bytes_consumed - 3);
+ return_ACPI_STATUS (AE_OK);
+}
+