/*******************************************************************************
*
- * FUNCTION: acpi_rs_irq_resource
+ * FUNCTION: acpi_rs_get_irq
*
- * 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
+ * PARAMETERS: Aml - Pointer to the AML resource descriptor
+ * aml_resource_length - Length of the resource from the AML header
+ * Resource - Where the internal resource 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.
+ * DESCRIPTION: Convert a raw AML resource descriptor to the corresponding
+ * internal resource descriptor, simplifying bitflags and handling
+ * alignment and endian issues if necessary.
*
******************************************************************************/
acpi_status
-acpi_rs_irq_resource(u8 * byte_stream_buffer,
- acpi_size * bytes_consumed,
- u8 ** output_buffer, acpi_size * structure_size)
+acpi_rs_get_irq(union aml_resource *aml,
+ u16 aml_resource_length, struct acpi_resource *resource)
{
- 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;
+ u32 interrupt_count = 0;
+ u32 i;
+ u32 resource_length;
- /* Point to the 16-bits of Bytes 1 and 2 */
+ ACPI_FUNCTION_TRACE("rs_get_irq");
- buffer += 1;
- ACPI_MOVE_16_TO_16(&temp16, buffer);
+ /* Get the IRQ mask (bytes 1:2) */
- output_struct->data.irq.number_of_interrupts = 0;
+ ACPI_MOVE_16_TO_16(&temp16, &aml->irq.irq_mask);
- /* Decode the IRQ bits */
+ /* Decode the IRQ bits (up to 16 possible) */
- for (i = 0, index = 0; index < 16; index++) {
- if ((temp16 >> index) & 0x01) {
- output_struct->data.irq.interrupts[i] = index;
- i++;
+ for (i = 0; i < 16; i++) {
+ if ((temp16 >> i) & 0x01) {
+ resource->data.irq.interrupts[interrupt_count] = i;
+ interrupt_count++;
}
}
/* Zero interrupts is valid */
- output_struct->data.irq.number_of_interrupts = i;
- if (i > 0) {
+ resource_length = 0;
+ resource->data.irq.interrupt_count = interrupt_count;
+ if (interrupt_count > 0) {
/* Calculate the structure size based upon the number of interrupts */
- struct_size += ((acpi_size) i - 1) * 4;
+ resource_length = (u32) (interrupt_count - 1) * 4;
}
- /* Point to Byte 3 if it is used */
-
- if (4 == *bytes_consumed) {
- buffer += 2;
- temp8 = *buffer;
+ /* Get Flags (Byte 3) if it is used */
+ if (aml_resource_length == 3) {
/* Check for HE, LL interrupts */
- switch (temp8 & 0x09) {
+ switch (aml->irq.flags & 0x09) {
case 0x01: /* HE */
- output_struct->data.irq.edge_level =
- ACPI_EDGE_SENSITIVE;
- output_struct->data.irq.active_high_low =
- ACPI_ACTIVE_HIGH;
+ resource->data.irq.triggering = ACPI_EDGE_SENSITIVE;
+ resource->data.irq.polarity = 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;
+ resource->data.irq.triggering = ACPI_LEVEL_SENSITIVE;
+ resource->data.irq.polarity = ACPI_ACTIVE_LOW;
break;
default:
*/
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Invalid interrupt polarity/trigger in resource list, %X\n",
- temp8));
+ aml->irq.flags));
return_ACPI_STATUS(AE_BAD_DATA);
}
- /* Check for sharable */
+ /* Get Sharing flag */
- output_struct->data.irq.shared_exclusive = (temp8 >> 3) & 0x01;
+ resource->data.irq.sharable = (aml->irq.flags >> 3) & 0x01;
} else {
/*
- * Assume Edge Sensitive, Active High, Non-Sharable
- * per ACPI Specification
+ * Default configuration: assume Edge Sensitive, Active High,
+ * Non-Sharable as per the 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;
+ resource->data.irq.triggering = ACPI_EDGE_SENSITIVE;
+ resource->data.irq.polarity = ACPI_ACTIVE_HIGH;
+ resource->data.irq.sharable = ACPI_EXCLUSIVE;
}
- /* Set the Length parameter */
+ /* Complete the resource header */
- output_struct->length = (u32) struct_size;
-
- /* Return the final size of the structure */
-
- *structure_size = struct_size;
+ resource->type = ACPI_RESOURCE_TYPE_IRQ;
+ resource->length =
+ resource_length + ACPI_SIZEOF_RESOURCE(struct acpi_resource_irq);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_irq_stream
+ * FUNCTION: acpi_rs_set_irq
*
- * 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
+ * PARAMETERS: Resource - Pointer to the resource descriptor
+ * Aml - Where the AML descriptor is returned
*
* RETURN: Status
*
- * DESCRIPTION: Take the linked list resource structure and fills in the
- * the appropriate bytes in a byte stream
+ * DESCRIPTION: Convert an internal resource descriptor to the corresponding
+ * external AML resource descriptor.
*
******************************************************************************/
acpi_status
-acpi_rs_irq_stream(struct acpi_resource *linked_list,
- u8 ** output_buffer, acpi_size * bytes_consumed)
+acpi_rs_set_irq(struct acpi_resource *resource, union aml_resource *aml)
{
- u8 *buffer = *output_buffer;
- u16 temp16 = 0;
- u8 temp8 = 0;
- u8 index;
- u8 IRqinfo_byte_needed;
+ acpi_size descriptor_length;
+ u16 irq_mask;
+ u8 i;
+
+ ACPI_FUNCTION_TRACE("rs_set_irq");
- ACPI_FUNCTION_TRACE("rs_irq_stream");
+ /* Convert interrupt list to 16-bit IRQ bitmask */
+
+ irq_mask = 0;
+ for (i = 0; i < resource->data.irq.interrupt_count; i++) {
+ irq_mask |= (1 << resource->data.irq.interrupts[i]);
+ }
+
+ /* Set the interrupt mask */
+
+ ACPI_MOVE_16_TO_16(&aml->irq.irq_mask, &irq_mask);
/*
* 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 */
+ if ((resource->data.irq.triggering == ACPI_EDGE_SENSITIVE) &&
+ (resource->data.irq.polarity == ACPI_ACTIVE_HIGH) &&
+ (resource->data.irq.sharable == ACPI_EXCLUSIVE)) {
+ /* irq_no_flags() descriptor can be used */
- for (index = 0;
- index < linked_list->data.irq.number_of_interrupts; index++) {
- temp8 = (u8) linked_list->data.irq.interrupts[index];
- temp16 |= 0x1 << temp8;
- }
+ descriptor_length = sizeof(struct aml_resource_irq_noflags);
+ } else {
+ /* Irq() descriptor must be used */
- ACPI_MOVE_16_TO_16(buffer, &temp16);
- buffer += 2;
+ descriptor_length = sizeof(struct aml_resource_irq);
- /* Set the IRQ Info byte if needed. */
+ /* Set the IRQ Info byte */
- if (IRqinfo_byte_needed) {
- temp8 = 0;
- temp8 = (u8) ((linked_list->data.irq.shared_exclusive &
- 0x01) << 4);
+ aml->irq.flags = (u8)
+ ((resource->data.irq.sharable & 0x01) << 4);
- if (ACPI_LEVEL_SENSITIVE == linked_list->data.irq.edge_level &&
- ACPI_ACTIVE_LOW == linked_list->data.irq.active_high_low) {
- temp8 |= 0x08;
+ if (ACPI_LEVEL_SENSITIVE == resource->data.irq.triggering &&
+ ACPI_ACTIVE_LOW == resource->data.irq.polarity) {
+ aml->irq.flags |= 0x08;
} else {
- temp8 |= 0x01;
+ aml->irq.flags |= 0x01;
}
-
- *buffer = temp8;
- buffer += 1;
}
- /* Return the number of bytes consumed in this operation */
+ /* Complete the AML descriptor header */
- *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
+ acpi_rs_set_resource_header(ACPI_RESOURCE_NAME_IRQ, descriptor_length,
+ aml);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_extended_irq_resource
+ * FUNCTION: acpi_rs_get_ext_irq
*
- * 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
+ * PARAMETERS: Aml - Pointer to the AML resource descriptor
+ * aml_resource_length - Length of the resource from the AML header
+ * Resource - Where the internal resource 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.
+ * DESCRIPTION: Convert a raw AML resource descriptor to the corresponding
+ * internal resource descriptor, simplifying bitflags and handling
+ * alignment and endian issues if necessary.
*
******************************************************************************/
acpi_status
-acpi_rs_extended_irq_resource(u8 * byte_stream_buffer,
- acpi_size * bytes_consumed,
- u8 ** output_buffer, acpi_size * structure_size)
+acpi_rs_get_ext_irq(union aml_resource *aml,
+ u16 aml_resource_length, struct acpi_resource *resource)
{
- 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");
+ char *out_resource_string;
+ u8 temp8;
- /* Get the Descriptor Length field */
+ ACPI_FUNCTION_TRACE("rs_get_ext_irq");
- buffer += 1;
- ACPI_MOVE_16_TO_16(&temp16, buffer);
+ /* Get the flag bits */
- /* 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;
+ temp8 = aml->extended_irq.flags;
+ resource->data.extended_irq.producer_consumer = temp8 & 0x01;
+ resource->data.extended_irq.polarity = (temp8 >> 2) & 0x01;
+ resource->data.extended_irq.sharable = (temp8 >> 3) & 0x01;
/*
* Check for Interrupt Mode
*
* - Edge/Level are defined opposite in the table vs the headers
*/
- output_struct->data.extended_irq.edge_level =
+ resource->data.extended_irq.triggering =
(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 */
+ /* Get the IRQ Table length (Byte4) */
+ temp8 = aml->extended_irq.table_length;
+ resource->data.extended_irq.interrupt_count = temp8;
if (temp8 < 1) {
+ /* Must have at least one IRQ */
+
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;
+ resource->length = (temp8 - 1) * 4;
+ out_resource_string = ACPI_CAST_PTR(char,
+ (&resource->data.extended_irq.
+ interrupts[0] + temp8));
- /* Point to Byte5 (First IRQ Number) */
+ /* Get every IRQ in the table, each is 32 bits */
- buffer += 1;
+ acpi_rs_move_data(resource->data.extended_irq.interrupts,
+ aml->extended_irq.interrupt_number,
+ (u16) temp8, ACPI_MOVE_TYPE_32_TO_32);
- /* Cycle through every IRQ in the table */
+ /* Get the optional resource_source (index and string) */
- for (index = 0; index < temp8; index++) {
- ACPI_MOVE_32_TO_32(&output_struct->data.extended_irq.
- interrupts[index], buffer);
+ resource->length +=
+ acpi_rs_get_resource_source(aml_resource_length,
+ (acpi_size) resource->length +
+ sizeof(struct
+ aml_resource_extended_irq),
+ &resource->data.extended_irq.
+ resource_source, aml,
+ out_resource_string);
- /* Point to the next IRQ */
+ /* Complete the resource header */
- 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;
+ resource->type = ACPI_RESOURCE_TYPE_EXTENDED_IRQ;
+ resource->length +=
+ ACPI_SIZEOF_RESOURCE(struct acpi_resource_extended_irq);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
- * FUNCTION: acpi_rs_extended_irq_stream
+ * FUNCTION: acpi_rs_set_ext_irq
*
- * 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
+ * PARAMETERS: Resource - Pointer to the resource descriptor
+ * Aml - Where the AML descriptor is returned
*
* RETURN: Status
*
- * DESCRIPTION: Take the linked list resource structure and fills in the
- * the appropriate bytes in a byte stream
+ * DESCRIPTION: Convert an internal resource descriptor to the corresponding
+ * external AML resource descriptor.
*
******************************************************************************/
acpi_status
-acpi_rs_extended_irq_stream(struct acpi_resource *linked_list,
- u8 ** output_buffer, acpi_size * bytes_consumed)
+acpi_rs_set_ext_irq(struct acpi_resource *resource, union aml_resource *aml)
{
- 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;
+ acpi_size descriptor_length;
- /* Save a pointer to the Length field - to be filled in later */
-
- length_field = ACPI_CAST_PTR(u16, buffer);
- buffer += 2;
+ ACPI_FUNCTION_TRACE("rs_set_ext_irq");
/* 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);
+ aml->extended_irq.flags = (u8)
+ ((resource->data.extended_irq.producer_consumer & 0x01) |
+ ((resource->data.extended_irq.sharable & 0x01) << 3) |
+ ((resource->data.extended_irq.polarity & 0x1) << 2));
/*
* Set the Interrupt Mode
*
* - Edge/Level are defined opposite in the table vs the headers
*/
- if (ACPI_EDGE_SENSITIVE == linked_list->data.extended_irq.edge_level) {
- temp8 |= 0x2;
+ if (resource->data.extended_irq.triggering == ACPI_EDGE_SENSITIVE) {
+ aml->extended_irq.flags |= 0x02;
}
- /* 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;
+ aml->extended_irq.table_length = (u8)
+ resource->data.extended_irq.interrupt_count;
- 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 */
+ descriptor_length = (sizeof(struct aml_resource_extended_irq) - 4) +
+ ((acpi_size) resource->data.extended_irq.interrupt_count *
+ sizeof(u32));
- if (0 != linked_list->data.extended_irq.resource_source.string_length) {
- *buffer =
- (u8) linked_list->data.extended_irq.resource_source.index;
- buffer += 1;
+ /* Set each interrupt value */
- /* Copy the string */
+ acpi_rs_move_data(aml->extended_irq.interrupt_number,
+ resource->data.extended_irq.interrupts,
+ (u16) resource->data.extended_irq.interrupt_count,
+ ACPI_MOVE_TYPE_32_TO_32);
- 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);
- }
+ /* Resource Source Index and Resource Source are optional */
- /* Return the number of bytes consumed in this operation */
+ descriptor_length = acpi_rs_set_resource_source(aml, descriptor_length,
+ &resource->data.
+ extended_irq.
+ resource_source);
- *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
+ /* Complete the AML descriptor header */
- /*
- * Set the length field to the number of bytes consumed
- * minus the header size (3 bytes)
- */
- *length_field = (u16) (*bytes_consumed - 3);
+ acpi_rs_set_resource_header(ACPI_RESOURCE_NAME_EXTENDED_IRQ,
+ descriptor_length, aml);
return_ACPI_STATUS(AE_OK);
}
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff