[ACPI] ACPICA 20051021

Implemented support for the EM64T and other x86_64
processors. This essentially entails recognizing
that these processors support non-aligned memory
transfers. Previously, all 64-bit processors were assumed
to lack hardware support for non-aligned transfers.

Completed conversion of the Resource Manager to nearly
full table-driven operation. Specifically, the resource
conversion code (convert AML to internal format and the
reverse) and the debug code to dump internal resource
descriptors are fully table-driven, reducing code and data
size and improving maintainability.

The OSL interfaces for Acquire and Release Lock now use a
64-bit flag word on 64-bit processors instead of a fixed
32-bit word. (Alexey Starikovskiy)

Implemented support within the resource conversion code
for the Type-Specific byte within the various ACPI 3.0
*WordSpace macros.

Fixed some issues within the resource conversion code for
the type-specific flags for both Memory and I/O address
resource descriptors. For Memory, implemented support
for the MTP and TTP flags. For I/O, split the TRS and TTP
flags into two separate fields.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 133 insertions, 136 deletions

diff --git a/drivers/acpi/resources/rsutils.c b/drivers/acpi/resources/rsutils.c
index 9d503de1a34..7613033f5dc 100644
--- a/drivers/acpi/resources/rsutils.c
+++ b/drivers/acpi/resources/rsutils.c
@@ -50,6 +50,64 @@ ACPI_MODULE_NAME("rsutils")
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_rs_decode_bitmask
+ *
+ * PARAMETERS:  Mask            - Bitmask to decode
+ *              List            - Where the converted list is returned
+ *
+ * RETURN:      Count of bits set (length of list)
+ *
+ * DESCRIPTION: Convert a bit mask into a list of values
+ *
+ ******************************************************************************/
+u8 acpi_rs_decode_bitmask(u16 mask, u8 * list)
+{
+        acpi_native_uint i;
+        u8 bit_count;
+
+        /* Decode the mask bits */
+
+        for (i = 0, bit_count = 0; mask; i++) {
+                if (mask & 0x0001) {
+                        list[bit_count] = (u8) i;
+                        bit_count++;
+                }
+
+                mask >>= 1;
+        }
+
+        return (bit_count);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_encode_bitmask
+ *
+ * PARAMETERS:  List            - List of values to encode
+ *              Count           - Length of list
+ *
+ * RETURN:      Encoded bitmask
+ *
+ * DESCRIPTION: Convert a list of values to an encoded bitmask
+ *
+ ******************************************************************************/
+
+u16 acpi_rs_encode_bitmask(u8 * list, u8 count)
+{
+        acpi_native_uint i;
+        u16 mask;
+
+        /* Encode the list into a single bitmask */
+
+        for (i = 0, mask = 0; i < count; i++) {
+                mask |= (0x0001 << list[i]);
+        }
+
+        return (mask);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_rs_move_data
  *
  * PARAMETERS:  Destination         - Pointer to the destination descriptor
@@ -64,6 +122,7 @@ ACPI_MODULE_NAME("rsutils")
  *              via the ACPI_MOVE_* macros. (This is why a memcpy is not used)
  *
  ******************************************************************************/
+
 void
 acpi_rs_move_data(void *destination, void *source, u16 item_count, u8 move_type)
 {
@@ -73,22 +132,30 @@ acpi_rs_move_data(void *destination, void *source, u16 item_count, u8 move_type)
 
         for (i = 0; i < item_count; i++) {
                 switch (move_type) {
-                case ACPI_MOVE_TYPE_16_TO_32:
-                        ACPI_MOVE_16_TO_32(&((u32 *) destination)[i],
-                                           &((u16 *) source)[i]);
-                        break;
+                        /*
+                         * For the 8-bit case, we can perform the move all at once
+                         * since there are no alignment or endian issues
+                         */
+                case ACPI_RSC_MOVE8:
+                        ACPI_MEMCPY(destination, source, item_count);
+                        return;
 
-                case ACPI_MOVE_TYPE_32_TO_16:
-                        ACPI_MOVE_32_TO_16(&((u16 *) destination)[i],
-                                           &((u32 *) source)[i]);
+                        /*
+                         * 16-, 32-, and 64-bit cases must use the move macros that perform
+                         * endian conversion and/or accomodate hardware that cannot perform
+                         * misaligned memory transfers
+                         */
+                case ACPI_RSC_MOVE16:
+                        ACPI_MOVE_16_TO_16(&((u16 *) destination)[i],
+                                           &((u16 *) source)[i]);
                         break;
 
-                case ACPI_MOVE_TYPE_32_TO_32:
+                case ACPI_RSC_MOVE32:
                         ACPI_MOVE_32_TO_32(&((u32 *) destination)[i],
                                            &((u32 *) source)[i]);
                         break;
 
-                case ACPI_MOVE_TYPE_64_TO_64:
+                case ACPI_RSC_MOVE64:
                         ACPI_MOVE_64_TO_64(&((u64 *) destination)[i],
                                            &((u64 *) source)[i]);
                         break;
@@ -148,80 +215,57 @@ struct acpi_resource_info *acpi_rs_get_resource_info(u8 resource_type)
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_rs_get_resource_length
+ * FUNCTION:    acpi_rs_set_resource_length
  *
- * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
+ * PARAMETERS:  total_length        - Length of the AML descriptor, including
+ *                                    the header and length fields.
+ *              Aml                 - Pointer to the raw AML descriptor
  *
- * RETURN:      Byte Length
+ * RETURN:      None
  *
- * DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
- *              definition, this does not include the size of the descriptor
- *              header or the length field itself.
+ * DESCRIPTION: Set the resource_length field of an AML
+ *              resource descriptor, both Large and Small descriptors are
+ *              supported automatically. Note: Descriptor Type field must
+ *              be valid.
  *
  ******************************************************************************/
 
-u16 acpi_rs_get_resource_length(union aml_resource * aml)
+void
+acpi_rs_set_resource_length(acpi_rsdesc_size total_length,
+                            union aml_resource *aml)
 {
-        u16 resource_length;
+        acpi_rs_length resource_length;
 
         ACPI_FUNCTION_ENTRY();
 
         /* Determine if this is a small or large resource */
 
-        if (aml->large_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) {
+        if (aml->small_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) {
                 /* Large Resource type -- bytes 1-2 contain the 16-bit length */
 
-                ACPI_MOVE_16_TO_16(&resource_length,
-                                   &aml->large_header.resource_length);
+                resource_length = (acpi_rs_length)
+                    (total_length - sizeof(struct aml_resource_large_header));
+
+                /* Insert length into the Large descriptor length field */
 
+                ACPI_MOVE_16_TO_16(&aml->large_header.resource_length,
+                                   &resource_length);
         } else {
                 /* Small Resource type -- bits 2:0 of byte 0 contain the length */
 
-                resource_length = (u16) (aml->small_header.descriptor_type &
-                                         ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
-        }
-
-        return (resource_length);
-}
+                resource_length = (acpi_rs_length)
+                    (total_length - sizeof(struct aml_resource_small_header));
 
-/*******************************************************************************
- *
- * FUNCTION:    acpi_rs_get_descriptor_length
- *
- * PARAMETERS:  Aml             - Pointer to the raw AML resource descriptor
- *
- * RETURN:      Byte length
- *
- * DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
- *              length of the descriptor header and the length field itself.
- *              Used to walk descriptor lists.
- *
- ******************************************************************************/
-
-u32 acpi_rs_get_descriptor_length(union aml_resource * aml)
-{
-        u32 descriptor_length;
-
-        ACPI_FUNCTION_ENTRY();
-
-        /* Determine if this is a small or large resource */
-
-        if (aml->large_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) {
-                /* Large Resource type -- bytes 1-2 contain the 16-bit length */
+                /* Insert length into the descriptor type byte */
 
-                ACPI_MOVE_16_TO_32(&descriptor_length,
-                                   &aml->large_header.resource_length);
-                descriptor_length += sizeof(struct aml_resource_large_header);
+                aml->small_header.descriptor_type = (u8)
 
-        } else {
-                /* Small Resource type -- bits 2:0 of byte 0 contain the length */
+                    /* Clear any existing length, preserving descriptor type bits */
+                    ((aml->small_header.
+                      descriptor_type & ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK)
 
-                descriptor_length = (u32) (aml->small_header.descriptor_type &
-                                           ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
-                descriptor_length += sizeof(struct aml_resource_small_header);
+                     | resource_length);
         }
-
-        return (descriptor_length);
 }
 
 /*******************************************************************************
@@ -243,71 +287,18 @@ u32 acpi_rs_get_descriptor_length(union aml_resource * aml)
 
 void
 acpi_rs_set_resource_header(u8 descriptor_type,
-                            acpi_size total_length, union aml_resource *aml)
+                            acpi_rsdesc_size total_length,
+                            union aml_resource *aml)
 {
-        u16 resource_length;
-
         ACPI_FUNCTION_ENTRY();
 
-        /* Set the descriptor type */
+        /* Set the Descriptor Type */
 
         aml->small_header.descriptor_type = descriptor_type;
 
-        /* Determine if this is a small or large resource */
-
-        if (aml->small_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) {
-                /* Large Resource type -- bytes 1-2 contain the 16-bit length */
-
-                resource_length =
-                    (u16) (total_length -
-                           sizeof(struct aml_resource_large_header));
-
-                /* Insert length into the Large descriptor length field */
-
-                ACPI_MOVE_16_TO_16(&aml->large_header.resource_length,
-                                   &resource_length);
-        } else {
-                /* Small Resource type -- bits 2:0 of byte 0 contain the length */
-
-                resource_length =
-                    (u16) (total_length -
-                           sizeof(struct aml_resource_small_header));
-
-                /* Insert length into the descriptor type byte */
-
-                aml->small_header.descriptor_type |= (u8) resource_length;
-        }
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_rs_get_resource_type
- *
- * PARAMETERS:  resource_type       - Byte 0 of a resource descriptor
- *
- * RETURN:      The Resource Type with no extraneous bits (except the
- *              Large/Small descriptor bit -- this is left alone)
- *
- * DESCRIPTION: Extract the Resource Type/Name from the first byte of
- *              a resource descriptor.
- *
- ******************************************************************************/
-
-u8 acpi_rs_get_resource_type(u8 resource_type)
-{
-        ACPI_FUNCTION_ENTRY();
+        /* Set the Resource Length */
 
-        /* Determine if this is a small or large resource */
-
-        if (resource_type & ACPI_RESOURCE_NAME_LARGE) {
-                /* Large Resource Type -- bits 6:0 contain the name */
-
-                return (resource_type);
-        } else {
-                /* Small Resource Type -- bits 6:3 contain the name */
-
-                return ((u8) (resource_type & ACPI_RESOURCE_NAME_SMALL_MASK));
-        }
+        acpi_rs_set_resource_length(total_length, aml);
 }
 
 /*******************************************************************************
@@ -360,13 +351,13 @@ static u16 acpi_rs_strcpy(char *destination, char *source)
  *
  ******************************************************************************/
 
-u16
-acpi_rs_get_resource_source(u16 resource_length,
-                            acpi_size minimum_length,
+acpi_rs_length
+acpi_rs_get_resource_source(acpi_rs_length resource_length,
+                            acpi_rs_length minimum_length,
                             struct acpi_resource_source * resource_source,
                             union aml_resource * aml, char *string_ptr)
 {
-        acpi_size total_length;
+        acpi_rsdesc_size total_length;
         u8 *aml_resource_source;
 
         ACPI_FUNCTION_ENTRY();
@@ -382,7 +373,7 @@ acpi_rs_get_resource_source(u16 resource_length,
          * Note: Some resource descriptors will have an additional null, so
          * we add 1 to the minimum length.
          */
-        if (total_length > (minimum_length + 1)) {
+        if (total_length > (acpi_rsdesc_size) (minimum_length + 1)) {
                 /* Get the resource_source_index */
 
                 resource_source->index = aml_resource_source[0];
@@ -398,20 +389,26 @@ acpi_rs_get_resource_source(u16 resource_length,
                             sizeof(struct acpi_resource_source);
                 }
 
+                /*
+                 * In order for the struct_size to fall on a 32-bit boundary, calculate
+                 * the length of the string (+1 for the NULL terminator) and expand the
+                 * struct_size to the next 32-bit boundary.
+                 *
+                 * Zero the entire area of the buffer.
+                 */
+                total_length =
+                    ACPI_ROUND_UP_to_32_bITS(ACPI_STRLEN
+                                             ((char *)&aml_resource_source[1]) +
+                                             1);
+                ACPI_MEMSET(resource_source->string_ptr, 0, total_length);
+
                 /* Copy the resource_source string to the destination */
 
                 resource_source->string_length =
                     acpi_rs_strcpy(resource_source->string_ptr,
                                    (char *)&aml_resource_source[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.
-                 */
-                return ((u16)
-                        ACPI_ROUND_UP_to_32_bITS(resource_source->
-                                                 string_length));
+                return ((acpi_rs_length) total_length);
         } else {
                 /* resource_source is not present */
 
@@ -434,18 +431,18 @@ acpi_rs_get_resource_source(u16 resource_length,
  *
  * RETURN:      Total length of the AML descriptor
  *
- * DESCRIPTION: Convert an optoinal resource_source from internal format to a
+ * DESCRIPTION: Convert an optional resource_source from internal format to a
  *              raw AML resource descriptor
  *
  ******************************************************************************/
 
-acpi_size
+acpi_rsdesc_size
 acpi_rs_set_resource_source(union aml_resource * aml,
-                            acpi_size minimum_length,
+                            acpi_rs_length minimum_length,
                             struct acpi_resource_source * resource_source)
 {
         u8 *aml_resource_source;
-        acpi_size descriptor_length;
+        acpi_rsdesc_size descriptor_length;
 
         ACPI_FUNCTION_ENTRY();
 
@@ -472,7 +469,7 @@ acpi_rs_set_resource_source(union aml_resource * aml,
                  * final descriptor length
                  */
                 descriptor_length +=
-                    ((acpi_size) resource_source->string_length + 1);
+                    ((acpi_rsdesc_size) resource_source->string_length + 1);
         }
 
         /* Return the new total length of the AML descriptor */