diff options
Diffstat (limited to 'drivers/acpi/resources/rsmisc.c')
| -rw-r--r-- | drivers/acpi/resources/rsmisc.c | 234 |
1 files changed, 198 insertions, 36 deletions
diff --git a/drivers/acpi/resources/rsmisc.c b/drivers/acpi/resources/rsmisc.c index 7a8a34e757f5..fa7f5a85b61d 100644 --- a/drivers/acpi/resources/rsmisc.c +++ b/drivers/acpi/resources/rsmisc.c @@ -49,6 +49,169 @@ ACPI_MODULE_NAME("rsmisc") /******************************************************************************* * + * FUNCTION: acpi_rs_generic_register_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_generic_register_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; + u8 temp8; + acpi_size struct_size = + ACPI_SIZEOF_RESOURCE(struct acpi_resource_generic_reg); + + ACPI_FUNCTION_TRACE("rs_generic_register_resource"); + + /* Byte 0 is the Descriptor Type */ + + buffer += 1; + + /* Get the Descriptor Length field (Bytes 1-2) */ + + ACPI_MOVE_16_TO_16(&temp16, buffer); + buffer += 2; + + /* Validate the descriptor length */ + + if (temp16 != 12) { + return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH); + } + + /* The number of bytes consumed is fixed (12 + 3) */ + + *bytes_consumed = 15; + + /* Fill out the structure */ + + output_struct->type = ACPI_RSTYPE_GENERIC_REG; + + /* Get space_id (Byte 3) */ + + temp8 = *buffer; + output_struct->data.generic_reg.space_id = temp8; + buffer += 1; + + /* Get register_bit_width (Byte 4) */ + + temp8 = *buffer; + output_struct->data.generic_reg.bit_width = temp8; + buffer += 1; + + /* Get register_bit_offset (Byte 5) */ + + temp8 = *buffer; + output_struct->data.generic_reg.bit_offset = temp8; + buffer += 1; + + /* Get address_size (Byte 6) */ + + temp8 = *buffer; + output_struct->data.generic_reg.address_size = temp8; + buffer += 1; + + /* Get register_address (Bytes 7-14) */ + + ACPI_MOVE_64_TO_64(&output_struct->data.generic_reg.address, buffer); + + /* 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_generic_register_stream + * + * PARAMETERS: Resource - 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_generic_register_stream(struct acpi_resource *resource, + u8 ** output_buffer, acpi_size * bytes_consumed) +{ + u8 *buffer = *output_buffer; + u16 temp16; + + ACPI_FUNCTION_TRACE("rs_generic_register_stream"); + + /* Set the Descriptor Type (Byte 0) */ + + *buffer = ACPI_RDESC_TYPE_GENERIC_REGISTER; + buffer += 1; + + /* Set the Descriptor Length (Bytes 1-2) */ + + temp16 = 12; + ACPI_MOVE_16_TO_16(buffer, &temp16); + buffer += 2; + + /* Set space_id (Byte 3) */ + + *buffer = (u8) resource->data.generic_reg.space_id; + buffer += 1; + + /* Set register_bit_width (Byte 4) */ + + *buffer = (u8) resource->data.generic_reg.bit_width; + buffer += 1; + + /* Set register_bit_offset (Byte 5) */ + + *buffer = (u8) resource->data.generic_reg.bit_offset; + buffer += 1; + + /* Set address_size (Byte 6) */ + + *buffer = (u8) resource->data.generic_reg.address_size; + buffer += 1; + + /* Set register_address (Bytes 7-14) */ + + ACPI_MOVE_64_TO_64(buffer, &resource->data.generic_reg.address); + buffer += 8; + + /* 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_end_tag_resource * * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte @@ -67,6 +230,7 @@ ACPI_MODULE_NAME("rsmisc") * number of bytes consumed from the byte stream. * ******************************************************************************/ + acpi_status acpi_rs_end_tag_resource(u8 * byte_stream_buffer, acpi_size * bytes_consumed, @@ -81,9 +245,9 @@ acpi_rs_end_tag_resource(u8 * byte_stream_buffer, *bytes_consumed = 2; - /* Fill out the structure */ + /* Fill out the structure */ - output_struct->id = ACPI_RSTYPE_END_TAG; + output_struct->type = ACPI_RSTYPE_END_TAG; /* Set the Length parameter */ @@ -99,7 +263,7 @@ acpi_rs_end_tag_resource(u8 * byte_stream_buffer, * * FUNCTION: acpi_rs_end_tag_stream * - * PARAMETERS: linked_list - Pointer to the resource linked list + * PARAMETERS: Resource - 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 @@ -112,7 +276,7 @@ acpi_rs_end_tag_resource(u8 * byte_stream_buffer, ******************************************************************************/ acpi_status -acpi_rs_end_tag_stream(struct acpi_resource *linked_list, +acpi_rs_end_tag_stream(struct acpi_resource *resource, u8 ** output_buffer, acpi_size * bytes_consumed) { u8 *buffer = *output_buffer; @@ -120,9 +284,9 @@ acpi_rs_end_tag_stream(struct acpi_resource *linked_list, ACPI_FUNCTION_TRACE("rs_end_tag_stream"); - /* The descriptor field is static */ + /* The Descriptor Type field is static */ - *buffer = 0x79; + *buffer = ACPI_RDESC_TYPE_END_TAG | 0x01; buffer += 1; /* @@ -180,7 +344,7 @@ acpi_rs_vendor_resource(u8 * byte_stream_buffer, temp8 = *buffer; - if (temp8 & 0x80) { + if (temp8 & ACPI_RDESC_TYPE_LARGE) { /* Large Item, point to the length field */ buffer += 1; @@ -210,7 +374,7 @@ acpi_rs_vendor_resource(u8 * byte_stream_buffer, buffer += 1; } - output_struct->id = ACPI_RSTYPE_VENDOR; + output_struct->type = ACPI_RSTYPE_VENDOR; output_struct->data.vendor_specific.length = temp16; for (index = 0; index < temp16; index++) { @@ -239,7 +403,7 @@ acpi_rs_vendor_resource(u8 * byte_stream_buffer, * * FUNCTION: acpi_rs_vendor_stream * - * PARAMETERS: linked_list - Pointer to the resource linked list + * PARAMETERS: Resource - 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 @@ -252,7 +416,7 @@ acpi_rs_vendor_resource(u8 * byte_stream_buffer, ******************************************************************************/ acpi_status -acpi_rs_vendor_stream(struct acpi_resource *linked_list, +acpi_rs_vendor_stream(struct acpi_resource *resource, u8 ** output_buffer, acpi_size * bytes_consumed) { u8 *buffer = *output_buffer; @@ -264,21 +428,21 @@ acpi_rs_vendor_stream(struct acpi_resource *linked_list, /* Dereference the length to find if this is a large or small item. */ - if (linked_list->data.vendor_specific.length > 7) { + if (resource->data.vendor_specific.length > 7) { /* Large Item, Set the descriptor field and length bytes */ - *buffer = 0x84; + *buffer = ACPI_RDESC_TYPE_LARGE_VENDOR; buffer += 1; - temp16 = (u16) linked_list->data.vendor_specific.length; + temp16 = (u16) resource->data.vendor_specific.length; ACPI_MOVE_16_TO_16(buffer, &temp16); buffer += 2; } else { /* Small Item, Set the descriptor field */ - temp8 = 0x70; - temp8 |= (u8) linked_list->data.vendor_specific.length; + temp8 = ACPI_RDESC_TYPE_SMALL_VENDOR; + temp8 |= (u8) resource->data.vendor_specific.length; *buffer = temp8; buffer += 1; @@ -286,9 +450,8 @@ acpi_rs_vendor_stream(struct acpi_resource *linked_list, /* Loop through all of the Vendor Specific fields */ - for (index = 0; index < linked_list->data.vendor_specific.length; - index++) { - temp8 = linked_list->data.vendor_specific.reserved[index]; + for (index = 0; index < resource->data.vendor_specific.length; index++) { + temp8 = resource->data.vendor_specific.reserved[index]; *buffer = temp8; buffer += 1; @@ -341,7 +504,7 @@ acpi_rs_start_depend_fns_resource(u8 * byte_stream_buffer, *bytes_consumed = (temp8 & 0x01) + 1; - output_struct->id = ACPI_RSTYPE_START_DPF; + output_struct->type = ACPI_RSTYPE_START_DPF; /* Point to Byte 1 if it is used */ @@ -421,7 +584,7 @@ acpi_rs_end_depend_fns_resource(u8 * byte_stream_buffer, /* Fill out the structure */ - output_struct->id = ACPI_RSTYPE_END_DPF; + output_struct->type = ACPI_RSTYPE_END_DPF; /* Set the Length parameter */ @@ -437,7 +600,7 @@ acpi_rs_end_depend_fns_resource(u8 * byte_stream_buffer, * * FUNCTION: acpi_rs_start_depend_fns_stream * - * PARAMETERS: linked_list - Pointer to the resource linked list + * PARAMETERS: Resource - Pointer to the resource linked list * output_buffer - Pointer to the user's return buffer * bytes_consumed - u32 pointer that is filled with * the number of bytes of the @@ -451,7 +614,7 @@ acpi_rs_end_depend_fns_resource(u8 * byte_stream_buffer, ******************************************************************************/ acpi_status -acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list, +acpi_rs_start_depend_fns_stream(struct acpi_resource *resource, u8 ** output_buffer, acpi_size * bytes_consumed) { u8 *buffer = *output_buffer; @@ -460,26 +623,25 @@ acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list, ACPI_FUNCTION_TRACE("rs_start_depend_fns_stream"); /* - * The descriptor field is set based upon whether a byte is needed + * The descriptor type field is set based upon whether a byte is needed * to contain Priority data. */ if (ACPI_ACCEPTABLE_CONFIGURATION == - linked_list->data.start_dpf.compatibility_priority && + resource->data.start_dpf.compatibility_priority && ACPI_ACCEPTABLE_CONFIGURATION == - linked_list->data.start_dpf.performance_robustness) { - *buffer = 0x30; + resource->data.start_dpf.performance_robustness) { + *buffer = ACPI_RDESC_TYPE_START_DEPENDENT; } else { - *buffer = 0x31; + *buffer = ACPI_RDESC_TYPE_START_DEPENDENT | 0x01; buffer += 1; /* Set the Priority Byte Definition */ temp8 = 0; - temp8 = - (u8) ((linked_list->data.start_dpf. - performance_robustness & 0x03) << 2); - temp8 |= - (linked_list->data.start_dpf.compatibility_priority & 0x03); + temp8 = (u8) ((resource->data.start_dpf.performance_robustness & + 0x03) << 2); + temp8 |= (resource->data.start_dpf.compatibility_priority & + 0x03); *buffer = temp8; } @@ -495,7 +657,7 @@ acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list, * * FUNCTION: acpi_rs_end_depend_fns_stream * - * PARAMETERS: linked_list - Pointer to the resource linked list + * PARAMETERS: Resource - 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 @@ -508,16 +670,16 @@ acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list, ******************************************************************************/ acpi_status -acpi_rs_end_depend_fns_stream(struct acpi_resource *linked_list, +acpi_rs_end_depend_fns_stream(struct acpi_resource *resource, u8 ** output_buffer, acpi_size * bytes_consumed) { u8 *buffer = *output_buffer; ACPI_FUNCTION_TRACE("rs_end_depend_fns_stream"); - /* The descriptor field is static */ + /* The Descriptor Type field is static */ - *buffer = 0x38; + *buffer = ACPI_RDESC_TYPE_END_DEPENDENT; buffer += 1; /* Return the number of bytes consumed in this operation */ |