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path: root/drivers/acpi/resources/rsirq.c
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Diffstat (limited to 'drivers/acpi/resources/rsirq.c')
-rw-r--r--drivers/acpi/resources/rsirq.c167
1 files changed, 72 insertions, 95 deletions
diff --git a/drivers/acpi/resources/rsirq.c b/drivers/acpi/resources/rsirq.c
index fd07a8702fbe..8a2b630be45b 100644
--- a/drivers/acpi/resources/rsirq.c
+++ b/drivers/acpi/resources/rsirq.c
@@ -83,7 +83,8 @@ acpi_rs_irq_resource (
u8 temp8 = 0;
u8 index;
u8 i;
- acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_irq);
+ acpi_size struct_size = ACPI_SIZEOF_RESOURCE (
+ struct acpi_resource_irq);
ACPI_FUNCTION_TRACE ("rs_irq_resource");
@@ -91,15 +92,14 @@ acpi_rs_irq_resource (
/*
* The number of bytes consumed are contained in the descriptor
- * (Bits:0-1)
+ * (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
- */
+ /* Point to the 16-bits of Bytes 1 and 2 */
+
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
@@ -118,22 +118,19 @@ acpi_rs_irq_resource (
output_struct->data.irq.number_of_interrupts = i;
if (i > 0) {
- /*
- * Calculate the structure size based upon the number of interrupts
- */
+ /* 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
- */
+ /* Point to Byte 3 if it is used */
+
if (4 == *bytes_consumed) {
buffer += 2;
temp8 = *buffer;
- /*
- * Check for HE, LL interrupts
- */
+ /* Check for HE, LL interrupts */
+
switch (temp8 & 0x09) {
case 0x01: /* HE */
output_struct->data.irq.edge_level = ACPI_EDGE_SENSITIVE;
@@ -152,13 +149,13 @@ acpi_rs_irq_resource (
* so 0x00 and 0x09 are illegal.
*/
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Invalid interrupt polarity/trigger in resource list, %X\n", temp8));
+ "Invalid interrupt polarity/trigger in resource list, %X\n",
+ temp8));
return_ACPI_STATUS (AE_BAD_DATA);
}
- /*
- * Check for sharable
- */
+ /* Check for sharable */
+
output_struct->data.irq.shared_exclusive = (temp8 >> 3) & 0x01;
}
else {
@@ -171,14 +168,12 @@ acpi_rs_irq_resource (
output_struct->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
}
- /*
- * Set the Length parameter
- */
+ /* Set the Length parameter */
+
output_struct->length = (u32) struct_size;
- /*
- * Return the final size of the structure
- */
+ /* Return the final size of the structure */
+
*structure_size = struct_size;
return_ACPI_STATUS (AE_OK);
}
@@ -234,9 +229,8 @@ acpi_rs_irq_stream (
buffer += 1;
temp16 = 0;
- /*
- * Loop through all of the interrupts and set the mask bits
- */
+ /* Loop through all of the interrupts and set the mask bits */
+
for(index = 0;
index < linked_list->data.irq.number_of_interrupts;
index++) {
@@ -247,9 +241,8 @@ acpi_rs_irq_stream (
ACPI_MOVE_16_TO_16 (buffer, &temp16);
buffer += 2;
- /*
- * Set the IRQ Info byte if needed.
- */
+ /* Set the IRQ Info byte if needed. */
+
if (IRqinfo_byte_needed) {
temp8 = 0;
temp8 = (u8) ((linked_list->data.irq.shared_exclusive &
@@ -267,9 +260,8 @@ acpi_rs_irq_stream (
buffer += 1;
}
- /*
- * Return the number of bytes consumed in this operation
- */
+ /* Return the number of bytes consumed in this operation */
+
*bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
return_ACPI_STATUS (AE_OK);
}
@@ -309,15 +301,15 @@ acpi_rs_extended_irq_resource (
u8 temp8 = 0;
u8 *temp_ptr;
u8 index;
- acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_ext_irq);
+ 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
- */
+ /* Point past the Descriptor to get the number of bytes consumed */
+
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
@@ -330,9 +322,8 @@ acpi_rs_extended_irq_resource (
*bytes_consumed = temp16 + 3;
output_struct->id = ACPI_RSTYPE_EXT_IRQ;
- /*
- * Point to the Byte3
- */
+ /* Point to the Byte3 */
+
buffer += 2;
temp8 = *buffer;
@@ -347,21 +338,18 @@ acpi_rs_extended_irq_resource (
* - 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;
+ (temp8 & 0x2) ? ACPI_EDGE_SENSITIVE : ACPI_LEVEL_SENSITIVE;
+
+ /* Check Interrupt Polarity */
- /*
- * Check Interrupt Polarity
- */
output_struct->data.extended_irq.active_high_low = (temp8 >> 2) & 0x1;
- /*
- * Check for sharable
- */
+ /* Check for sharable */
+
output_struct->data.extended_irq.shared_exclusive = (temp8 >> 3) & 0x01;
- /*
- * Point to Byte4 (IRQ Table length)
- */
+ /* Point to Byte4 (IRQ Table length) */
+
buffer += 1;
temp8 = *buffer;
@@ -379,14 +367,12 @@ acpi_rs_extended_irq_resource (
*/
struct_size += (temp8 - 1) * 4;
- /*
- * Point to Byte5 (First IRQ Number)
- */
+ /* Point to Byte5 (First IRQ Number) */
+
buffer += 1;
- /*
- * Cycle through every IRQ in the table
- */
+ /* 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);
@@ -407,7 +393,8 @@ acpi_rs_extended_irq_resource (
* we add 1 to the length.
*/
if (*bytes_consumed >
- ((acpi_size) output_struct->data.extended_irq.number_of_interrupts * 4) + (5 + 1)) {
+ ((acpi_size) output_struct->data.extended_irq.number_of_interrupts * 4) +
+ (5 + 1)) {
/* Dereference the Index */
temp8 = *buffer;
@@ -417,13 +404,13 @@ acpi_rs_extended_irq_resource (
buffer += 1;
- /*
- * Point the String pointer to the end of this structure.
- */
+ /* 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;
+ temp_ptr = (u8 *)
+ output_struct->data.extended_irq.resource_source.string_ptr;
/* Copy the string into the buffer */
@@ -436,9 +423,8 @@ acpi_rs_extended_irq_resource (
index += 1;
}
- /*
- * Add the terminating null
- */
+ /* Add the terminating null */
+
*temp_ptr = 0x00;
output_struct->data.extended_irq.resource_source.string_length = index + 1;
@@ -456,14 +442,12 @@ acpi_rs_extended_irq_resource (
output_struct->data.extended_irq.resource_source.string_ptr = NULL;
}
- /*
- * Set the Length parameter
- */
+ /* Set the Length parameter */
+
output_struct->length = (u32) struct_size;
- /*
- * Return the final size of the structure
- */
+ /* Return the final size of the structure */
+
*structure_size = struct_size;
return_ACPI_STATUS (AE_OK);
}
@@ -501,21 +485,18 @@ acpi_rs_extended_irq_stream (
ACPI_FUNCTION_TRACE ("rs_extended_irq_stream");
- /*
- * The descriptor field is static
- */
+ /* The descriptor field is static */
+
*buffer = 0x89;
buffer += 1;
- /*
- * Set a pointer to the Length field - to be filled in later
- */
+ /* 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
- */
+ /* 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);
@@ -532,17 +513,15 @@ acpi_rs_extended_irq_stream (
temp8 |= 0x2;
}
- /*
- * Set the Interrupt Polarity
- */
+ /* Set the Interrupt Polarity */
+
temp8 |= ((linked_list->data.extended_irq.active_high_low & 0x1) << 2);
*buffer = temp8;
buffer += 1;
- /*
- * Set the Interrupt table length
- */
+ /* Set the Interrupt table length */
+
temp8 = (u8) linked_list->data.extended_irq.number_of_interrupts;
*buffer = temp8;
@@ -555,18 +534,16 @@ acpi_rs_extended_irq_stream (
buffer += 4;
}
- /*
- * Resource Source Index and Resource Source are optional
- */
+ /* 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
- */
+ /* Copy the string */
+
ACPI_STRCPY (temp_pointer,
linked_list->data.extended_irq.resource_source.string_ptr);
@@ -574,12 +551,12 @@ acpi_rs_extended_irq_stream (
* 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);
+ buffer += (acpi_size) (ACPI_STRLEN (
+ linked_list->data.extended_irq.resource_source.string_ptr) + 1);
}
- /*
- * Return the number of bytes consumed in this operation
- */
+ /* Return the number of bytes consumed in this operation */
+
*bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
/*
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.