* [RFC 3/4] irqchip, gicv3-its: Introduce ACPI generic quirk framework [not found] <5886266C.3070506@huawei.com> @ 2017-01-24 13:50 ` Shameerali Kolothum Thodi 0 siblings, 0 replies; 2+ messages in thread From: Shameerali Kolothum Thodi @ 2017-01-24 13:50 UTC (permalink / raw) To: marc.zyngier, mark.rutland, will.deacon Cc: linux-arm-kernel, linuxarm, linux-kernel, devicetree, john.garry, guohanjun The current quirk mechanism is based on the IIDR register. This introduces a ACPI MADT OEM information based erratum support for platforms on which the IIDR registers are not properly populated. Signed-off-by: shameer <shameerali.kolothum.thodi@huawei.com> --- drivers/irqchip/irq-gic-v3-its.c | 62 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 0a326f6..9fa12b7 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -1858,6 +1858,66 @@ static int __init its_of_probe(struct device_node *node) #ifdef CONFIG_ACPI +struct acpi_madt_its_quirks { + char oem_id[ACPI_OEM_ID_SIZE+1]; + char oem_table_id[ACPI_OEM_TABLE_ID_SIZE+1]; + u32 oem_revision; + u32 its_id; + const char *erratum; +}; + +/*Upadate as per the board OEM ID and TABLE ID*/ +struct acpi_madt_its_quirks acpi_its_quirks[] __initdata = { + +}; + +static void acpi_its_enable_erratum(const char *erratum) +{ + const struct gic_quirk *quirks = its_quirks; + int i = 0; + + for (; quirks->desc; quirks++) { + if ((quirks->erratum) && (!strcmp(quirks->erratum, erratum))) + erratum_workarounds[i++] = quirks; + } +} + +static void __init acpi_its_oem_check(char *oem_id, char *oem_table_id, + u32 oem_revision) +{ + struct acpi_madt_its_quirks *quirks = acpi_its_quirks; + + for (; quirks->erratum; quirks++) { + if (!memcmp(quirks->oem_id, oem_id, ACPI_OEM_ID_SIZE) && + !memcmp(quirks->oem_table_id, oem_table_id, + ACPI_OEM_TABLE_ID_SIZE) && + quirks->oem_revision == oem_revision) { + acpi_its_enable_erratum(quirks->erratum); + } + } +} + +static int __init acpi_parse_madt(struct acpi_table_header *madt_table) +{ + struct acpi_table_madt *table; + + table = (struct acpi_table_madt *)madt_table; + acpi_its_oem_check(table->header.oem_id, + table->header.oem_table_id, table->header.oem_revision); + + return 0; +} + +void __init its_acpi_quirks_enable(u32 its_id) +{ + struct acpi_madt_its_quirks *quirks = acpi_its_quirks; + + for (; quirks->erratum; quirks++) { + if (quirks->its_id == its_id) + acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt); + } +} + #define ACPI_GICV3_ITS_MEM_SIZE (SZ_128K) static int __init gic_acpi_parse_madt_its(struct acpi_subtable_header *header, @@ -1888,6 +1948,8 @@ static int __init gic_acpi_parse_madt_its(struct acpi_subtable_header *header, goto dom_err; } + its_acpi_quirks_enable(its_entry->translation_id); + err = its_probe_one(&res, dom_handle, NUMA_NO_NODE); if (!err) return 0; -- 1.9.1 . ^ permalink raw reply related [flat|nested] 2+ messages in thread
* [RFC 3/4] irqchip, gicv3-its: Introduce ACPI generic quirk framework @ 2017-01-24 13:50 ` Shameerali Kolothum Thodi 0 siblings, 0 replies; 2+ messages in thread From: Shameerali Kolothum Thodi @ 2017-01-24 13:50 UTC (permalink / raw) To: marc.zyngier, mark.rutland, will.deacon Cc: linux-arm-kernel, linuxarm, linux-kernel, devicetree, john.garry, guohanjun The current quirk mechanism is based on the IIDR register. This introduces a ACPI MADT OEM information based erratum support for platforms on which the IIDR registers are not properly populated. Signed-off-by: shameer <shameerali.kolothum.thodi@huawei.com> --- drivers/irqchip/irq-gic-v3-its.c | 62 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 0a326f6..9fa12b7 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -1858,6 +1858,66 @@ static int __init its_of_probe(struct device_node *node) #ifdef CONFIG_ACPI +struct acpi_madt_its_quirks { + char oem_id[ACPI_OEM_ID_SIZE+1]; + char oem_table_id[ACPI_OEM_TABLE_ID_SIZE+1]; + u32 oem_revision; + u32 its_id; + const char *erratum; +}; + +/*Upadate as per the board OEM ID and TABLE ID*/ +struct acpi_madt_its_quirks acpi_its_quirks[] __initdata = { + +}; + +static void acpi_its_enable_erratum(const char *erratum) +{ + const struct gic_quirk *quirks = its_quirks; + int i = 0; + + for (; quirks->desc; quirks++) { + if ((quirks->erratum) && (!strcmp(quirks->erratum, erratum))) + erratum_workarounds[i++] = quirks; + } +} + +static void __init acpi_its_oem_check(char *oem_id, char *oem_table_id, + u32 oem_revision) +{ + struct acpi_madt_its_quirks *quirks = acpi_its_quirks; + + for (; quirks->erratum; quirks++) { + if (!memcmp(quirks->oem_id, oem_id, ACPI_OEM_ID_SIZE) && + !memcmp(quirks->oem_table_id, oem_table_id, + ACPI_OEM_TABLE_ID_SIZE) && + quirks->oem_revision == oem_revision) { + acpi_its_enable_erratum(quirks->erratum); + } + } +} + +static int __init acpi_parse_madt(struct acpi_table_header *madt_table) +{ + struct acpi_table_madt *table; + + table = (struct acpi_table_madt *)madt_table; + acpi_its_oem_check(table->header.oem_id, + table->header.oem_table_id, table->header.oem_revision); + + return 0; +} + +void __init its_acpi_quirks_enable(u32 its_id) +{ + struct acpi_madt_its_quirks *quirks = acpi_its_quirks; + + for (; quirks->erratum; quirks++) { + if (quirks->its_id == its_id) + acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt); + } +} + #define ACPI_GICV3_ITS_MEM_SIZE (SZ_128K) static int __init gic_acpi_parse_madt_its(struct acpi_subtable_header *header, @@ -1888,6 +1948,8 @@ static int __init gic_acpi_parse_madt_its(struct acpi_subtable_header *header, goto dom_err; } + its_acpi_quirks_enable(its_entry->translation_id); + err = its_probe_one(&res, dom_handle, NUMA_NO_NODE); if (!err) return 0; -- 1.9.1 . ^ permalink raw reply related [flat|nested] 2+ messages in thread
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2017-01-24 13:50 ` [RFC 3/4] irqchip, gicv3-its: Introduce ACPI generic quirk framework Shameerali Kolothum Thodi
2017-01-24 13:50 ` Shameerali Kolothum Thodi
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