You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
552 lines
16 KiB
552 lines
16 KiB
/*******************************************************************************
|
|
*
|
|
* 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");
|
|
|
|
/* Get the Descriptor Length field */
|
|
|
|
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 (*buffer) {
|
|
*temp_ptr = *buffer;
|
|
|
|
temp_ptr += 1;
|
|
buffer += 1;
|
|
index += 1;
|
|
}
|
|
|
|
/* Add the terminating null */
|
|
|
|
*temp_ptr = 0;
|
|
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 = 0;
|
|
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;
|
|
|
|
ACPI_FUNCTION_TRACE("rs_extended_irq_stream");
|
|
|
|
/* Set the Descriptor Type field */
|
|
|
|
*buffer = ACPI_RDESC_TYPE_EXTENDED_XRUPT;
|
|
buffer += 1;
|
|
|
|
/* Save 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;
|
|
|
|
/* Copy the string */
|
|
|
|
ACPI_STRCPY((char *)buffer,
|
|
linked_list->data.extended_irq.resource_source.
|
|
string_ptr);
|
|
|
|
/*
|
|
* Buffer needs to be set to the length of the string + 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);
|
|
}
|
|
|