From 1d5b285da1893b90507b081664ac27f1a8a3dc5b Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Thu, 10 Apr 2008 19:06:43 +0400 Subject: [PATCH] ACPICA: Fix for resource descriptor optimization issues for _CRS/_SRC Fixed a problem where resource descriptor size optimization could cause a problem when a _CRS resource template is passed to a _SRS method. The _SRS resource template must use the same descriptors (with the same size) as returned from _CRS. This change affects the following resource descriptors: IRQ/IRQNoFlags and StartDependendentFn/StartDependentFnNoPri. http://bugzilla.kernel.org/show_bug.cgi?id=9487 Signed-off-by: Bob Moore Signed-off-by: Alexey Starikovskiy Signed-off-by: Len Brown --- drivers/acpi/resources/rscalc.c | 7 ++++++ drivers/acpi/resources/rsdump.c | 8 ++++-- drivers/acpi/resources/rsio.c | 39 ++++++++++++++++++++++++++++-- drivers/acpi/resources/rsirq.c | 43 ++++++++++++++++++++++++++++++--- drivers/acpi/resources/rsmisc.c | 11 +++++++++ include/acpi/acresrc.h | 1 + include/acpi/actypes.h | 2 ++ 7 files changed, 103 insertions(+), 8 deletions(-) diff --git a/drivers/acpi/resources/rscalc.c b/drivers/acpi/resources/rscalc.c index dcc51e92ac92..db0a835e3317 100644 --- a/drivers/acpi/resources/rscalc.c +++ b/drivers/acpi/resources/rscalc.c @@ -211,6 +211,13 @@ acpi_rs_get_aml_length(struct acpi_resource * resource, acpi_size * size_needed) * variable-length fields */ switch (resource->type) { + case ACPI_RESOURCE_TYPE_IRQ: + + if (resource->data.irq.descriptor_length == 2) { + total_size--; + } + break; + case ACPI_RESOURCE_TYPE_VENDOR: /* * Vendor Defined Resource: diff --git a/drivers/acpi/resources/rsdump.c b/drivers/acpi/resources/rsdump.c index 46da116a4030..ed6447dcea78 100644 --- a/drivers/acpi/resources/rsdump.c +++ b/drivers/acpi/resources/rsdump.c @@ -87,8 +87,10 @@ acpi_rs_dump_descriptor(void *resource, struct acpi_rsdump_info *table); * ******************************************************************************/ -struct acpi_rsdump_info acpi_rs_dump_irq[6] = { +struct acpi_rsdump_info acpi_rs_dump_irq[7] = { {ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_irq), "IRQ", NULL}, + {ACPI_RSD_UINT8, ACPI_RSD_OFFSET(irq.descriptor_length), + "Descriptor Length", NULL}, {ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(irq.triggering), "Triggering", acpi_gbl_he_decode}, {ACPI_RSD_1BITFLAG, ACPI_RSD_OFFSET(irq.polarity), "Polarity", @@ -115,9 +117,11 @@ struct acpi_rsdump_info acpi_rs_dump_dma[6] = { NULL} }; -struct acpi_rsdump_info acpi_rs_dump_start_dpf[3] = { +struct acpi_rsdump_info acpi_rs_dump_start_dpf[4] = { {ACPI_RSD_TITLE, ACPI_RSD_TABLE_SIZE(acpi_rs_dump_start_dpf), "Start-Dependent-Functions", NULL}, + {ACPI_RSD_UINT8, ACPI_RSD_OFFSET(start_dpf.descriptor_length), + "Descriptor Length", NULL}, {ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(start_dpf.compatibility_priority), "Compatibility Priority", acpi_gbl_config_decode}, {ACPI_RSD_2BITFLAG, ACPI_RSD_OFFSET(start_dpf.performance_robustness), diff --git a/drivers/acpi/resources/rsio.c b/drivers/acpi/resources/rsio.c index b297bc3e4419..50f3acdd9c8e 100644 --- a/drivers/acpi/resources/rsio.c +++ b/drivers/acpi/resources/rsio.c @@ -185,7 +185,7 @@ struct acpi_rsconvert_info acpi_rs_convert_end_tag[2] = { * ******************************************************************************/ -struct acpi_rsconvert_info acpi_rs_get_start_dpf[5] = { +struct acpi_rsconvert_info acpi_rs_get_start_dpf[6] = { {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_START_DEPENDENT, ACPI_RS_SIZE(struct acpi_resource_start_dependent), ACPI_RSC_TABLE_SIZE(acpi_rs_get_start_dpf)}, @@ -196,6 +196,12 @@ struct acpi_rsconvert_info acpi_rs_get_start_dpf[5] = { ACPI_ACCEPTABLE_CONFIGURATION, 2}, + /* Get the descriptor length (0 or 1 for Start Dpf descriptor) */ + + {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.start_dpf.descriptor_length), + AML_OFFSET(start_dpf.descriptor_type), + 0}, + /* All done if there is no flag byte present in the descriptor */ {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 1}, @@ -219,7 +225,9 @@ struct acpi_rsconvert_info acpi_rs_get_start_dpf[5] = { * ******************************************************************************/ -struct acpi_rsconvert_info acpi_rs_set_start_dpf[6] = { +struct acpi_rsconvert_info acpi_rs_set_start_dpf[10] = { + /* Start with a default descriptor of length 1 */ + {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_START_DEPENDENT, sizeof(struct aml_resource_start_dependent), ACPI_RSC_TABLE_SIZE(acpi_rs_set_start_dpf)}, @@ -235,6 +243,33 @@ struct acpi_rsconvert_info acpi_rs_set_start_dpf[6] = { ACPI_RS_OFFSET(data.start_dpf.performance_robustness), AML_OFFSET(start_dpf.flags), 2}, + /* + * All done if the output descriptor length is required to be 1 + * (i.e., optimization to 0 bytes cannot be attempted) + */ + {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE, + ACPI_RS_OFFSET(data.start_dpf.descriptor_length), + 1}, + + /* Set length to 0 bytes (no flags byte) */ + + {ACPI_RSC_LENGTH, 0, 0, + sizeof(struct aml_resource_start_dependent_noprio)}, + + /* + * All done if the output descriptor length is required to be 0. + * + * TBD: Perhaps we should check for error if input flags are not + * compatible with a 0-byte descriptor. + */ + {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE, + ACPI_RS_OFFSET(data.start_dpf.descriptor_length), + 0}, + + /* Reset length to 1 byte (descriptor with flags byte) */ + + {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq)}, + /* * All done if flags byte is necessary -- if either priority value * is not ACPI_ACCEPTABLE_CONFIGURATION diff --git a/drivers/acpi/resources/rsirq.c b/drivers/acpi/resources/rsirq.c index 5657f7b95039..382a77b8400d 100644 --- a/drivers/acpi/resources/rsirq.c +++ b/drivers/acpi/resources/rsirq.c @@ -52,7 +52,7 @@ ACPI_MODULE_NAME("rsirq") * acpi_rs_get_irq * ******************************************************************************/ -struct acpi_rsconvert_info acpi_rs_get_irq[7] = { +struct acpi_rsconvert_info acpi_rs_get_irq[8] = { {ACPI_RSC_INITGET, ACPI_RESOURCE_TYPE_IRQ, ACPI_RS_SIZE(struct acpi_resource_irq), ACPI_RSC_TABLE_SIZE(acpi_rs_get_irq)}, @@ -69,6 +69,12 @@ struct acpi_rsconvert_info acpi_rs_get_irq[7] = { ACPI_EDGE_SENSITIVE, 1}, + /* Get the descriptor length (2 or 3 for IRQ descriptor) */ + + {ACPI_RSC_2BITFLAG, ACPI_RS_OFFSET(data.irq.descriptor_length), + AML_OFFSET(irq.descriptor_type), + 0}, + /* All done if no flag byte present in descriptor */ {ACPI_RSC_EXIT_NE, ACPI_RSC_COMPARE_AML_LENGTH, 0, 3}, @@ -94,7 +100,9 @@ struct acpi_rsconvert_info acpi_rs_get_irq[7] = { * ******************************************************************************/ -struct acpi_rsconvert_info acpi_rs_set_irq[9] = { +struct acpi_rsconvert_info acpi_rs_set_irq[13] = { + /* Start with a default descriptor of length 3 */ + {ACPI_RSC_INITSET, ACPI_RESOURCE_NAME_IRQ, sizeof(struct aml_resource_irq), ACPI_RSC_TABLE_SIZE(acpi_rs_set_irq)}, @@ -105,7 +113,7 @@ struct acpi_rsconvert_info acpi_rs_set_irq[9] = { AML_OFFSET(irq.irq_mask), ACPI_RS_OFFSET(data.irq.interrupt_count)}, - /* Set the flags byte by default */ + /* Set the flags byte */ {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.triggering), AML_OFFSET(irq.flags), @@ -118,6 +126,33 @@ struct acpi_rsconvert_info acpi_rs_set_irq[9] = { {ACPI_RSC_1BITFLAG, ACPI_RS_OFFSET(data.irq.sharable), AML_OFFSET(irq.flags), 4}, + + /* + * All done if the output descriptor length is required to be 3 + * (i.e., optimization to 2 bytes cannot be attempted) + */ + {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE, + ACPI_RS_OFFSET(data.irq.descriptor_length), + 3}, + + /* Set length to 2 bytes (no flags byte) */ + + {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)}, + + /* + * All done if the output descriptor length is required to be 2. + * + * TBD: Perhaps we should check for error if input flags are not + * compatible with a 2-byte descriptor. + */ + {ACPI_RSC_EXIT_EQ, ACPI_RSC_COMPARE_VALUE, + ACPI_RS_OFFSET(data.irq.descriptor_length), + 2}, + + /* Reset length to 3 bytes (descriptor with flags byte) */ + + {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq)}, + /* * Check if the flags byte is necessary. Not needed if the flags are: * ACPI_EDGE_SENSITIVE, ACPI_ACTIVE_HIGH, ACPI_EXCLUSIVE @@ -134,7 +169,7 @@ struct acpi_rsconvert_info acpi_rs_set_irq[9] = { ACPI_RS_OFFSET(data.irq.sharable), ACPI_EXCLUSIVE}, - /* irq_no_flags() descriptor can be used */ + /* We can optimize to a 2-byte irq_no_flags() descriptor */ {ACPI_RSC_LENGTH, 0, 0, sizeof(struct aml_resource_irq_noflags)} }; diff --git a/drivers/acpi/resources/rsmisc.c b/drivers/acpi/resources/rsmisc.c index c7081afa893a..3e69eff303fb 100644 --- a/drivers/acpi/resources/rsmisc.c +++ b/drivers/acpi/resources/rsmisc.c @@ -497,6 +497,17 @@ acpi_rs_convert_resource_to_aml(struct acpi_resource *resource, } break; + case ACPI_RSC_EXIT_EQ: + /* + * Control - Exit conversion if equal + */ + if (*ACPI_ADD_PTR(u8, resource, + COMPARE_TARGET(info)) == + COMPARE_VALUE(info)) { + goto exit; + } + break; + default: ACPI_ERROR((AE_INFO, "Invalid conversion opcode")); diff --git a/include/acpi/acresrc.h b/include/acpi/acresrc.h index 9486ab266a5e..33e9f3813220 100644 --- a/include/acpi/acresrc.h +++ b/include/acpi/acresrc.h @@ -94,6 +94,7 @@ typedef const struct acpi_rsconvert_info { #define ACPI_RSC_BITMASK16 18 #define ACPI_RSC_EXIT_NE 19 #define ACPI_RSC_EXIT_LE 20 +#define ACPI_RSC_EXIT_EQ 21 /* Resource Conversion sub-opcodes */ diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index bb44700680a3..599657eac2d4 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -986,6 +986,7 @@ struct acpi_vendor_uuid { * Structures used to describe device resources */ struct acpi_resource_irq { + u8 descriptor_length; u8 triggering; u8 polarity; u8 sharable; @@ -1002,6 +1003,7 @@ struct acpi_resource_dma { }; struct acpi_resource_start_dependent { + u8 descriptor_length; u8 compatibility_priority; u8 performance_robustness; }; -- 2.20.1