diff options
Diffstat (limited to 'drivers/acpi/resources')
| -rw-r--r-- | drivers/acpi/resources/rscalc.c | 100 | ||||
| -rw-r--r-- | drivers/acpi/resources/rscreate.c | 2 | ||||
| -rw-r--r-- | drivers/acpi/resources/rslist.c | 15 | ||||
| -rw-r--r-- | drivers/acpi/resources/rsmisc.c | 6 | ||||
| -rw-r--r-- | drivers/acpi/resources/rsutils.c | 17 |
5 files changed, 72 insertions, 68 deletions
diff --git a/drivers/acpi/resources/rscalc.c b/drivers/acpi/resources/rscalc.c index 223bdc49326..8e406d992f3 100644 --- a/drivers/acpi/resources/rscalc.c +++ b/drivers/acpi/resources/rscalc.c @@ -162,9 +162,11 @@ acpi_rs_stream_option_length(u32 resource_length, resource_length - minimum_aml_resource_length - 1; } - /* Round up length to 32 bits for internal structure alignment */ - - return ((u32) ACPI_ROUND_UP_to_32_bITS(string_length)); + /* + * Round the length up to a multiple of the native word in order to + * guarantee that the entire resource descriptor is native word aligned + */ + return ((u32) ACPI_ROUND_UP_TO_NATIVE_WORD(string_length)); } /******************************************************************************* @@ -336,7 +338,7 @@ acpi_rs_get_list_length(u8 * aml_buffer, acpi_status status; u8 *end_aml; u8 *buffer; - u32 buffer_size = 0; + u32 buffer_size; u16 temp16; u16 resource_length; u32 extra_struct_bytes; @@ -345,6 +347,7 @@ acpi_rs_get_list_length(u8 * aml_buffer, ACPI_FUNCTION_TRACE("rs_get_list_length"); + *size_needed = 0; end_aml = aml_buffer + aml_buffer_length; /* Walk the list of AML resource descriptors */ @@ -391,37 +394,28 @@ acpi_rs_get_list_length(u8 * aml_buffer, break; case ACPI_RESOURCE_NAME_VENDOR_SMALL: + case ACPI_RESOURCE_NAME_VENDOR_LARGE: /* * Vendor Resource: - * Ensure a 32-bit boundary for the structure + * Get the number of vendor data bytes */ - extra_struct_bytes = (u32) - ACPI_ROUND_UP_to_32_bITS(resource_length) - - resource_length; + extra_struct_bytes = resource_length; break; case ACPI_RESOURCE_NAME_END_TAG: /* - * End Tag: This is the normal exit, add size of end_tag + * End Tag: + * This is the normal exit, add size of end_tag */ - *size_needed = buffer_size + ACPI_RS_SIZE_MIN; + *size_needed += ACPI_RS_SIZE_MIN; return_ACPI_STATUS(AE_OK); - case ACPI_RESOURCE_NAME_VENDOR_LARGE: - /* - * Vendor Resource: - * Add vendor data and ensure a 32-bit boundary for the structure - */ - extra_struct_bytes = (u32) - ACPI_ROUND_UP_to_32_bITS(resource_length) - - resource_length; - break; - case ACPI_RESOURCE_NAME_ADDRESS32: case ACPI_RESOURCE_NAME_ADDRESS16: + case ACPI_RESOURCE_NAME_ADDRESS64: /* - * 32-Bit or 16-bit Address Resource: - * Add the size of any optional data (resource_source) + * Address Resource: + * Add the size of the optional resource_source */ extra_struct_bytes = acpi_rs_stream_option_length(resource_length, @@ -430,50 +424,46 @@ acpi_rs_get_list_length(u8 * aml_buffer, case ACPI_RESOURCE_NAME_EXTENDED_IRQ: /* - * Extended IRQ: - * Point past the interrupt_vector_flags to get the - * interrupt_table_length. + * Extended IRQ Resource: + * Using the interrupt_table_length, add 4 bytes for each additional + * interrupt. Note: at least one interrupt is required and is + * included in the minimum descriptor size (reason for the -1) */ - buffer++; - - extra_struct_bytes = (u32) - /* - * Add 4 bytes for each additional interrupt. Note: at - * least one interrupt is required and is included in - * the minimum descriptor size - */ - ((*buffer - 1) * sizeof(u32)) + - /* Add the size of any optional data (resource_source) */ + extra_struct_bytes = (buffer[1] - 1) * sizeof(u32); + + /* Add the size of the optional resource_source */ + + extra_struct_bytes += acpi_rs_stream_option_length(resource_length - extra_struct_bytes, minimum_aml_resource_length); break; - case ACPI_RESOURCE_NAME_ADDRESS64: - /* - * 64-Bit Address Resource: - * Add the size of any optional data (resource_source) - * Ensure a 64-bit boundary for the structure - */ - extra_struct_bytes = (u32) - ACPI_ROUND_UP_to_64_bITS - (acpi_rs_stream_option_length - (resource_length, minimum_aml_resource_length)); - break; - default: break; } - /* Update the required buffer size for the internal descriptor structs */ + /* + * Update the required buffer size for the internal descriptor structs + * + * Important: Round the size up for the appropriate alignment. This + * is a requirement on IA64. + */ + buffer_size = acpi_gbl_resource_struct_sizes[resource_index] + + extra_struct_bytes; + buffer_size = ACPI_ROUND_UP_TO_NATIVE_WORD(buffer_size); + + *size_needed += buffer_size; - temp16 = (u16) (acpi_gbl_resource_struct_sizes[resource_index] + - extra_struct_bytes); - buffer_size += (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(temp16); + ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, + "Type %.2X, Aml %.2X internal %.2X\n", + acpi_ut_get_resource_type(aml_buffer), + acpi_ut_get_descriptor_length(aml_buffer), + buffer_size)); /* - * Point to the next resource within the stream - * using the size of the header plus the length contained in the header + * Point to the next resource within the AML stream using the length + * contained in the resource descriptor header */ aml_buffer += acpi_ut_get_descriptor_length(aml_buffer); } @@ -589,7 +579,7 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object, /* Round up the size since each element must be aligned */ - temp_size_needed = ACPI_ROUND_UP_to_64_bITS(temp_size_needed); + temp_size_needed = ACPI_ROUND_UP_to_64_bIT(temp_size_needed); /* Point to the next union acpi_operand_object */ @@ -597,7 +587,7 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object, } /* - * Adding an extra element to the end of the list, essentially a + * Add an extra element to the end of the list, essentially a * NULL terminator */ *buffer_size_needed = diff --git a/drivers/acpi/resources/rscreate.c b/drivers/acpi/resources/rscreate.c index 8c128dea325..67c052af7bb 100644 --- a/drivers/acpi/resources/rscreate.c +++ b/drivers/acpi/resources/rscreate.c @@ -332,7 +332,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, /* Now align the current length */ user_prt->length = - (u32) ACPI_ROUND_UP_to_64_bITS(user_prt->length); + (u32) ACPI_ROUND_UP_to_64_bIT(user_prt->length); /* 4) Fourth subobject: Dereference the PRT.source_index */ diff --git a/drivers/acpi/resources/rslist.c b/drivers/acpi/resources/rslist.c index c27dca64d5d..6f2d8de3952 100644 --- a/drivers/acpi/resources/rslist.c +++ b/drivers/acpi/resources/rslist.c @@ -77,6 +77,15 @@ acpi_rs_convert_aml_to_resources(u8 * aml, u32 aml_length, u8 * output_buffer) /* Loop until end-of-buffer or an end_tag is found */ while (aml < end_aml) { + /* + * Check that the input buffer and all subsequent pointers into it + * are aligned on a native word boundary. Most important on IA64 + */ + if (ACPI_IS_MISALIGNED(resource)) { + ACPI_WARNING((AE_INFO, + "Misaligned resource pointer %p", + resource)); + } /* Validate the Resource Type and Resource Length */ @@ -101,6 +110,12 @@ acpi_rs_convert_aml_to_resources(u8 * aml, u32 aml_length, u8 * output_buffer) return_ACPI_STATUS(status); } + ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES, + "Type %.2X, Aml %.2X internal %.2X\n", + acpi_ut_get_resource_type(aml), + acpi_ut_get_descriptor_length(aml), + resource->length)); + /* Normal exit on completion of an end_tag resource descriptor */ if (acpi_ut_get_resource_type(aml) == diff --git a/drivers/acpi/resources/rsmisc.c b/drivers/acpi/resources/rsmisc.c index 095730196a8..6a731f4028d 100644 --- a/drivers/acpi/resources/rsmisc.c +++ b/drivers/acpi/resources/rsmisc.c @@ -81,7 +81,7 @@ acpi_rs_convert_aml_to_resource(struct acpi_resource *resource, u16 item_count = 0; u16 temp16 = 0; - ACPI_FUNCTION_TRACE("rs_get_resource"); + ACPI_FUNCTION_TRACE("rs_convert_aml_to_resource"); if (((acpi_native_uint) resource) & 0x3) { @@ -297,10 +297,10 @@ acpi_rs_convert_aml_to_resource(struct acpi_resource *resource, exit: if (!flags_mode) { - /* Round the resource struct length up to the next 32-bit boundary */ + /* Round the resource struct length up to the next boundary (32 or 64) */ resource->length = - (u32) ACPI_ROUND_UP_to_32_bITS(resource->length); + (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(resource->length); } return_ACPI_STATUS(AE_OK); } diff --git a/drivers/acpi/resources/rsutils.c b/drivers/acpi/resources/rsutils.c index c5f7014929b..9bcf0b637d2 100644 --- a/drivers/acpi/resources/rsutils.c +++ b/drivers/acpi/resources/rsutils.c @@ -299,7 +299,8 @@ static u16 acpi_rs_strcpy(char *destination, char *source) * string_ptr - (optional) where to store the actual * resource_source string * - * RETURN: Length of the string plus NULL terminator, rounded up to 32 bit + * RETURN: Length of the string plus NULL terminator, rounded up to native + * word boundary * * DESCRIPTION: Copy the optional resource_source data from a raw AML descriptor * to an internal resource descriptor @@ -346,18 +347,16 @@ acpi_rs_get_resource_source(acpi_rs_length resource_length, } /* - * 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. + * In order for the Resource length to be a multiple of the native + * word, calculate the length of the string (+1 for NULL terminator) + * and expand to the next word multiple. * * Zero the entire area of the buffer. */ total_length = - (u32) - ACPI_ROUND_UP_to_32_bITS(ACPI_STRLEN - (ACPI_CAST_PTR - (char, - &aml_resource_source[1])) + 1); + ACPI_STRLEN(ACPI_CAST_PTR(char, &aml_resource_source[1])) + + 1; + total_length = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(total_length); ACPI_MEMSET(resource_source->string_ptr, 0, total_length); |