diff options
Diffstat (limited to 'drivers/acpi/resources/rsirq.c')
| -rw-r--r-- | drivers/acpi/resources/rsirq.c | 251 |
1 files changed, 117 insertions, 134 deletions
diff --git a/drivers/acpi/resources/rsirq.c b/drivers/acpi/resources/rsirq.c index 8a2b630be45b..56043fee96cb 100644 --- a/drivers/acpi/resources/rsirq.c +++ b/drivers/acpi/resources/rsirq.c @@ -41,13 +41,11 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acresrc.h> #define _COMPONENT ACPI_RESOURCES - ACPI_MODULE_NAME ("rsirq") - +ACPI_MODULE_NAME("rsirq") /******************************************************************************* * @@ -69,26 +67,20 @@ * number of bytes consumed from the byte stream. * ******************************************************************************/ - acpi_status -acpi_rs_irq_resource ( - u8 *byte_stream_buffer, - acpi_size *bytes_consumed, - u8 **output_buffer, - acpi_size *structure_size) +acpi_rs_irq_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 = 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"); + 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 @@ -101,7 +93,7 @@ acpi_rs_irq_resource ( /* Point to the 16-bits of Bytes 1 and 2 */ buffer += 1; - ACPI_MOVE_16_TO_16 (&temp16, buffer); + ACPI_MOVE_16_TO_16(&temp16, buffer); output_struct->data.irq.number_of_interrupts = 0; @@ -132,14 +124,18 @@ acpi_rs_irq_resource ( /* Check for HE, LL interrupts */ switch (temp8 & 0x09) { - case 0x01: /* HE */ - output_struct->data.irq.edge_level = ACPI_EDGE_SENSITIVE; - output_struct->data.irq.active_high_low = ACPI_ACTIVE_HIGH; + case 0x01: /* HE */ + output_struct->data.irq.edge_level = + ACPI_EDGE_SENSITIVE; + output_struct->data.irq.active_high_low = + 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; + case 0x08: /* LL */ + output_struct->data.irq.edge_level = + ACPI_LEVEL_SENSITIVE; + output_struct->data.irq.active_high_low = + ACPI_ACTIVE_LOW; break; default: @@ -148,17 +144,16 @@ acpi_rs_irq_resource ( * are allowed (ACPI spec, section "IRQ Format") * so 0x00 and 0x09 are illegal. */ - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "Invalid interrupt polarity/trigger in resource list, %X\n", - temp8)); - return_ACPI_STATUS (AE_BAD_DATA); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + "Invalid interrupt polarity/trigger in resource list, %X\n", + temp8)); + return_ACPI_STATUS(AE_BAD_DATA); } /* Check for sharable */ output_struct->data.irq.shared_exclusive = (temp8 >> 3) & 0x01; - } - else { + } else { /* * Assume Edge Sensitive, Active High, Non-Sharable * per ACPI Specification @@ -175,10 +170,9 @@ acpi_rs_irq_resource ( /* Return the final size of the structure */ *structure_size = struct_size; - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_rs_irq_stream @@ -196,32 +190,27 @@ acpi_rs_irq_resource ( ******************************************************************************/ acpi_status -acpi_rs_irq_stream ( - struct acpi_resource *linked_list, - u8 **output_buffer, - acpi_size *bytes_consumed) +acpi_rs_irq_stream(struct acpi_resource *linked_list, + u8 ** output_buffer, acpi_size * bytes_consumed) { - u8 *buffer = *output_buffer; - u16 temp16 = 0; - u8 temp8 = 0; - u8 index; - u8 IRqinfo_byte_needed; - - - ACPI_FUNCTION_TRACE ("rs_irq_stream"); + u8 *buffer = *output_buffer; + u16 temp16 = 0; + u8 temp8 = 0; + u8 index; + u8 IRqinfo_byte_needed; + ACPI_FUNCTION_TRACE("rs_irq_stream"); /* * 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) { + 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 { + } else { *buffer = 0x23; IRqinfo_byte_needed = TRUE; } @@ -231,14 +220,13 @@ acpi_rs_irq_stream ( /* Loop through all of the interrupts and set the mask bits */ - for(index = 0; - index < linked_list->data.irq.number_of_interrupts; - index++) { + for (index = 0; + index < linked_list->data.irq.number_of_interrupts; index++) { temp8 = (u8) linked_list->data.irq.interrupts[index]; temp16 |= 0x1 << temp8; } - ACPI_MOVE_16_TO_16 (buffer, &temp16); + ACPI_MOVE_16_TO_16(buffer, &temp16); buffer += 2; /* Set the IRQ Info byte if needed. */ @@ -246,13 +234,12 @@ acpi_rs_irq_stream ( if (IRqinfo_byte_needed) { temp8 = 0; temp8 = (u8) ((linked_list->data.irq.shared_exclusive & - 0x01) << 4); + 0x01) << 4); if (ACPI_LEVEL_SENSITIVE == linked_list->data.irq.edge_level && - ACPI_ACTIVE_LOW == linked_list->data.irq.active_high_low) { + ACPI_ACTIVE_LOW == linked_list->data.irq.active_high_low) { temp8 |= 0x08; - } - else { + } else { temp8 |= 0x01; } @@ -262,11 +249,10 @@ acpi_rs_irq_stream ( /* Return the number of bytes consumed in this operation */ - *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer); - return_ACPI_STATUS (AE_OK); + *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_rs_extended_irq_resource @@ -289,34 +275,30 @@ acpi_rs_irq_stream ( ******************************************************************************/ acpi_status -acpi_rs_extended_irq_resource ( - u8 *byte_stream_buffer, - acpi_size *bytes_consumed, - u8 **output_buffer, - acpi_size *structure_size) +acpi_rs_extended_irq_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 = 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"); + 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"); - /* Point past the Descriptor to get the number of bytes consumed */ + /* Get the Descriptor Length field */ buffer += 1; - ACPI_MOVE_16_TO_16 (&temp16, buffer); + ACPI_MOVE_16_TO_16(&temp16, buffer); /* Validate minimum descriptor length */ if (temp16 < 6) { - return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH); + return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH); } *bytes_consumed = temp16 + 3; @@ -338,7 +320,7 @@ 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 */ @@ -356,7 +338,7 @@ acpi_rs_extended_irq_resource ( /* Must have at least one IRQ */ if (temp8 < 1) { - return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH); + return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH); } output_struct->data.extended_irq.number_of_interrupts = temp8; @@ -374,8 +356,8 @@ acpi_rs_extended_irq_resource ( /* 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); + ACPI_MOVE_32_TO_32(&output_struct->data.extended_irq. + interrupts[index], buffer); /* Point to the next IRQ */ @@ -393,12 +375,13 @@ 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; - output_struct->data.extended_irq.resource_source.index = (u32) temp8; + output_struct->data.extended_irq.resource_source.index = + (u32) temp8; /* Point to the String */ @@ -407,15 +390,15 @@ acpi_rs_extended_irq_resource ( /* 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); + (char *)((char *)output_struct + struct_size); temp_ptr = (u8 *) - output_struct->data.extended_irq.resource_source.string_ptr; + output_struct->data.extended_irq.resource_source.string_ptr; /* Copy the string into the buffer */ index = 0; - while (0x00 != *buffer) { + while (*buffer) { *temp_ptr = *buffer; temp_ptr += 1; @@ -425,8 +408,9 @@ acpi_rs_extended_irq_resource ( /* Add the terminating null */ - *temp_ptr = 0x00; - output_struct->data.extended_irq.resource_source.string_length = index + 1; + *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, @@ -434,12 +418,13 @@ acpi_rs_extended_irq_resource ( * 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 = 0x00; - output_struct->data.extended_irq.resource_source.string_length = 0; - output_struct->data.extended_irq.resource_source.string_ptr = NULL; + 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 */ @@ -449,10 +434,9 @@ acpi_rs_extended_irq_resource ( /* Return the final size of the structure */ *structure_size = struct_size; - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_rs_extended_irq_stream @@ -470,35 +454,31 @@ acpi_rs_extended_irq_resource ( ******************************************************************************/ acpi_status -acpi_rs_extended_irq_stream ( - struct acpi_resource *linked_list, - u8 **output_buffer, - acpi_size *bytes_consumed) +acpi_rs_extended_irq_stream(struct acpi_resource *linked_list, + u8 ** output_buffer, acpi_size * bytes_consumed) { - u8 *buffer = *output_buffer; - u16 *length_field; - u8 temp8 = 0; - u8 index; - char *temp_pointer = NULL; - - - ACPI_FUNCTION_TRACE ("rs_extended_irq_stream"); + u8 *buffer = *output_buffer; + u16 *length_field; + u8 temp8 = 0; + u8 index; + ACPI_FUNCTION_TRACE("rs_extended_irq_stream"); - /* The descriptor field is static */ + /* Set the Descriptor Type field */ - *buffer = 0x89; + *buffer = ACPI_RDESC_TYPE_EXTENDED_XRUPT; buffer += 1; - /* Set a pointer to the Length field - to be filled in later */ + /* Save a pointer to the Length field - to be filled in later */ - length_field = ACPI_CAST_PTR (u16, buffer); + length_field = ACPI_CAST_PTR(u16, buffer); buffer += 2; /* 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); + temp8 = (u8) (linked_list->data.extended_irq.producer_consumer & 0x01); + temp8 |= + ((linked_list->data.extended_irq.shared_exclusive & 0x01) << 3); /* * Set the Interrupt Mode @@ -527,43 +507,46 @@ acpi_rs_extended_irq_stream ( *buffer = temp8; buffer += 1; - 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]); + 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 */ if (0 != linked_list->data.extended_irq.resource_source.string_length) { - *buffer = (u8) linked_list->data.extended_irq.resource_source.index; + *buffer = + (u8) linked_list->data.extended_irq.resource_source.index; buffer += 1; - temp_pointer = (char *) buffer; - /* Copy the string */ - ACPI_STRCPY (temp_pointer, - linked_list->data.extended_irq.resource_source.string_ptr); + ACPI_STRCPY((char *)buffer, + linked_list->data.extended_irq.resource_source. + string_ptr); /* - * Buffer needs to be set to the length of the sting + one for the + * 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); + buffer += + (acpi_size) (ACPI_STRLEN + (linked_list->data.extended_irq. + resource_source.string_ptr) + 1); } /* Return the number of bytes consumed in this operation */ - *bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer); + *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer); /* * Set the length field to the number of bytes consumed * minus the header size (3 bytes) */ *length_field = (u16) (*bytes_consumed - 3); - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - |