Linaro-acpi July 2015

linaro-acpi@lists.linaro.org

27 participants
36 discussions

[PATCH v4 0/2] Correct for ACPI 5.1->6.0 spec changes in MADT GICC entries

by Al Stone

In the ACPI 5.1 version of the spec, the struct for the GICC subtable (struct acpi_madt_generic_interrupt) of the MADT is 76 bytes long; in ACPI 6.0, the struct is 80 bytes long. But, there is only one definition in ACPICA for this struct -- and that is the 6.0 version. Hence, when BAD_MADT_ENTRY() compares the struct size to the length in the GICC subtable, it fails if 5.1 structs are in use, and there are systems in the wild that have them. Note that this was found in linux-next and these patches apply against that tree and the arm64 kernel tree; 4.1 does not appear to have this problem since it still has the 5.1 struct definition. Though there is precedent in ia64 code for ignoring the changes in size, this patch set instead verifies correctness. The first patch adds the BAD_MADT_GICC_ENTRY() macro to check the GICC subtable only, accounting for the difference in specification versions that are possible. The second patch replaces BAD_MADT_ENTRY usage with the BAD_MADT_GICC_ENTRY macro in arm64 code, which is currently the only architecture affected. The BAD_MADT_ENTRY() will continue to work as is for all other MADT subtables. I have tested these patches on an APM Mustang with version 1.15 firmware, where the problem was found, and they fix the problem -- i.e., the system will boot with either Linux 4.1 or linux-next kernels using the same ACPI 5.1 compatible firmware. Changes for v4: -- Reword the cover letter to reflect smaller patch set -- Simplify BAD_MADT_GICC_ENTRY to the minimum needed; this removed the need for the first patch containing version number macros (Rafael) -- Simplify determining the GICC subtable length (Catalin) Changes for v3: -- Modified the macros for using spec version numbers in order to make them clearer (Rafael, Hanjun) -- Moved the definition of the BAD_MADT_GICC_ENTRY macro to an arm64-specific header file since only this architecture uses the GICC subtable (Rafael) -- Added Reviewed-by (Hanjun) and Acked-by (Will) tags to 3/3, the only unchanged patch; other tags could be applied but the patches have changed. -- Added Fixes: tag to patches Changes for v2: -- Replace magic constants with proper defines (Lorenzo) -- Minor syntax clean-up noted by checkpatch -- Send out CCs properly this time -- Minor clean-up of the paragraphs in this cover letter Al Stone (2): ACPI / ARM64: add BAD_MADT_GICC_ENTRY() macro ACPI / ARM64 : use the new BAD_MADT_GICC_ENTRY macro arch/arm64/include/asm/acpi.h | 8 ++++++++ arch/arm64/kernel/smp.c | 2 +- drivers/irqchip/irq-gic.c | 2 +- 3 files changed, 10 insertions(+), 2 deletions(-) -- 2.4.3

9 years, 8 months

[RFC PATCH] ACPI / gsi: use gsi to find its irqdomain

by Hanjun Guo

As we use the acpi_irq_domain as the global pointer to the acpi core irq domain, which lead to multi places referring it and the way is not scalable, so introduce a struct gsi_cfg_data to abstract the gsi data for the irqchips then match the irq domain with the gsi. For a ACPI based irqchip for example a GICD, it defines System Vector Base in the GICD entry, which means the global system interrupt number where this GIC Distributor’s interrupt inputs start, then we can get the irq number supported by reading the register for this GICD, so we can explictly get the gsi's associated irqdomain if the gsi is within the range of gsi supported by this GICD. For ACPI device in DSDT, it using another mapping of device and hwirq number than DT, in DT, we using the interrupt parent property to get the device node of irqchip, that's why we need the matching function that match the device node with the one associated with the irqdomain. For ACPI, we only can get the gsi which the device is using, no interrupt parent will be used, that because gsi is a flat hwirq number which is unique in the system, then we can get its associated irq domain as I said above, which can be without the token pointer matching the interrupt controller. the code is arch independent, it also can be expanted for x86 for multi ioapics. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- drivers/acpi/gsi.c | 51 ++++++++++++++++++++++++++++++++++++++------ drivers/irqchip/irq-gic-v3.c | 4 +++- drivers/irqchip/irq-gic.c | 7 +++++- include/linux/acpi.h | 10 ++++++++- 4 files changed, 62 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/gsi.c b/drivers/acpi/gsi.c index 02c8408..7867ec2 100644 --- a/drivers/acpi/gsi.c +++ b/drivers/acpi/gsi.c @@ -15,11 +15,44 @@ enum acpi_irq_model_id acpi_irq_model; -static struct irq_domain *acpi_irq_domain __read_mostly; +static LIST_HEAD(gsi_cfg_data_list); +static DEFINE_MUTEX(gsi_mutex); -void set_acpi_irq_domain(struct irq_domain *domain) +int gsi_cfg_data_add(struct irq_domain *domain, u32 gsi_base, u32 gsi_end) { - acpi_irq_domain = domain; + struct gsi_cfg_data *data; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->domain = domain; + data->gsi_base = gsi_base; + data->gsi_base = gsi_base; + + mutex_lock(&gsi_mutex); + list_add(&data->list, &gsi_cfg_data_list); + mutex_unlock(&gsi_mutex); + + return 0; +} + +/* Find irqdomain with GSI (hwirq number) */ +static struct irq_domain *acpi_find_irqdomain(u32 gsi) +{ + struct gsi_cfg_data *data; + struct irq_domain *domain = NULL; + + mutex_lock(&gsi_mutex); + list_for_each_entry(data, &gsi_cfg_data_list, list) { + if (gsi >= data->gsi_base && gsi <= data->gsi_end) { + domain = data->domain; + break; + } + } + mutex_unlock(&gsi_mutex); + + return domain; } static unsigned int acpi_gsi_get_irq_type(int trigger, int polarity) @@ -53,7 +86,9 @@ static unsigned int acpi_gsi_get_irq_type(int trigger, int polarity) */ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) { - *irq = irq_find_mapping(acpi_irq_domain, gsi); + struct irq_domain *domain = acpi_find_irqdomain(gsi); + + *irq = irq_find_mapping(domain, gsi); /* * *irq == 0 means no mapping, that should * be reported as a failure @@ -77,12 +112,13 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, { int irq; unsigned int irq_type = acpi_gsi_get_irq_type(trigger, polarity); + struct irq_domain *domain = acpi_find_irqdomain(gsi); - irq = irq_find_mapping(acpi_irq_domain, gsi); + irq = irq_find_mapping(domain, gsi); if (irq > 0) return irq; - irq = irq_domain_alloc_irqs(acpi_irq_domain, 1, dev_to_node(dev), + irq = irq_domain_alloc_irqs(domain, 1, dev_to_node(dev), &gsi); if (irq <= 0) return -EINVAL; @@ -101,7 +137,8 @@ EXPORT_SYMBOL_GPL(acpi_register_gsi); */ void acpi_unregister_gsi(u32 gsi) { - int irq = irq_find_mapping(acpi_irq_domain, gsi); + struct irq_domain *domain = acpi_find_irqdomain(gsi); + int irq = irq_find_mapping(domain, gsi); irq_dispose_mapping(irq); } diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index a11c020..5c53af6 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -947,6 +947,7 @@ static LIST_HEAD(redist_list); static struct redist_region *redist_regs __initdata; static u32 nr_redist_regions __initdata; static phys_addr_t dist_phy_base __initdata; +u32 gsi_base __initdata; static int __init gic_acpi_register_redist(u64 phys_base, u64 size) @@ -1014,6 +1015,7 @@ gic_acpi_parse_madt_distributor(struct acpi_subtable_header *header, if (BAD_MADT_ENTRY(dist, end)) return -EINVAL; + gsi_base = dist->global_irq_base; dist_phy_base = dist->base_address; return 0; } @@ -1168,7 +1170,7 @@ init_base: if (err) goto out_release_redist; - set_acpi_irq_domain(gic_data.domain); + gsi_cfg_data_add(gic_data.domain, gsi_base, gsi_base + gic_data.irq_nr); return 0; out_release_redist: diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 7f943ef..62e0640 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -1051,6 +1051,7 @@ IRQCHIP_DECLARE(msm_qgic2, "qcom,msm-qgic2", gic_of_init); #ifdef CONFIG_ACPI static phys_addr_t dist_phy_base, cpu_phy_base __initdata; +u32 gsi_base __initdata; static int __init gic_acpi_parse_madt_cpu(struct acpi_subtable_header *header, @@ -1089,6 +1090,7 @@ gic_acpi_parse_madt_distributor(struct acpi_subtable_header *header, if (BAD_MADT_ENTRY(dist, end)) return -EINVAL; + gsi_base = dist->global_irq_base; dist_phy_base = dist->base_address; return 0; } @@ -1139,7 +1141,10 @@ gic_v2_acpi_init(struct acpi_table_header *table) } gic_init_bases(0, -1, dist_base, cpu_base, 0, NULL); - set_acpi_irq_domain(gic_data[0].domain); + + /* since we have only one GICD, we can safely use gic_data[0] here */ + gsi_cfg_data_add(gic_data[0].domain, gsi_base, + gsi_base + gic_data[0].gic_irqs); acpi_irq_model = ACPI_IRQ_MODEL_GIC; return 0; diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 6de4b0e..093d60e 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -223,7 +223,15 @@ void acpi_unregister_gsi (u32 gsi); #ifdef CONFIG_ACPI_GENERIC_GSI struct irq_domain; -void set_acpi_irq_domain(struct irq_domain *domain); + +struct gsi_cfg_data { + struct list_head list; + u32 gsi_base; + u32 gsi_end; + struct irq_domain *domain; +}; + +int gsi_cfg_data_add(struct irq_domain *domain, u32 gsi_base, u32 gsi_end); #endif struct pci_dev; -- 1.9.1

9 years, 8 months

[PATCH v3 0/3] Correct for ACPI 5.1->6.0 spec changes in MADT GICC entries

by Al Stone

In the ACPI 5.1 version of the spec, the struct for the GICC subtable (struct acpi_madt_generic_interrupt) of the MADT is 76 bytes long; in ACPI 6.0, the struct is 80 bytes long. But, there is only one definition in ACPICA for this struct -- and that is the 6.0 version. Hence, when BAD_MADT_ENTRY() compares the struct size to the length in the GICC subtable, it fails if 5.1 structs are in use, and there are systems in the wild that have them. Note that this was found in linux-next and these patches apply against that tree and the arm64 kernel tree; 4.1-rc8 does not appear to have this problem since it still has the 5.1 struct definition. Even though there is precendent in ia64 code for ignoring the changes in size, this patch set instead tries to verify correctness. The first patch in the set adds macros for easily using the ACPI spec version. The second patch adds the BAD_MADT_GICC_ENTRY() macro that uses the version macros to check the GICC subtable only, accounting for the difference in specification versions that are possible. The final patch replaces BAD_MADT_ENTRY usage with the BAD_MADT_GICC_ENTRY macro in arm64 code, which is currently the only architecture affected. The BAD_MADT_ENTRY() will continue to work as is for all other MADT subtables. I have tested these patches on an APM Mustang with version 1.15 firmware, where the problem was found, and they fix the problem. Changes for v3: -- Modified the macros for using spec version numbers in order to make them clearer (Rafael, Hanjun) -- Moved the definition of the BAD_MADT_GICC_ENTRY macro to an arm64-specific header file since only this architecture uses the GICC subtable (Rafael) -- Added Reviewed-by (Hanjun) and Acked-by (Will) tags to 3/3, the only unchanged patch; other tags could be applied but the patches have changed. -- Added Fixes: tag to patches Changes for v2: -- Replace magic constants with proper defines (Lorenzo) -- Minor syntax clean-up noted by checkpatch -- Send out CCs properly this time -- Minor clean-up of the paragraphs in this cover letter Al Stone (3): ACPI : introduce macros for using the ACPI specification version ACPI / ARM64: add BAD_MADT_GICC_ENTRY() macro ACPI / ARM64 : use the new BAD_MADT_GICC_ENTRY macro arch/arm64/include/asm/acpi.h | 11 +++++++++++ arch/arm64/kernel/smp.c | 2 +- drivers/irqchip/irq-gic.c | 2 +- include/linux/acpi.h | 10 ++++++++++ 4 files changed, 23 insertions(+), 2 deletions(-) -- 2.4.3

9 years, 8 months

Exposing RSDP, RSDT, XSDT in /sys/

by G Gregory

Hi Guys, I guess its time to put this to bed now that Roys patch has made it into acpica-tools and FWTS has been fixed to work without /dev/mem. I produced the patch to expose these three tables from the kernel. BUT, is there actually a user for this? My gut feeling is no and they really contain little of interest anyway. Does anyone actually have a use for the patch that makes it worth sending upstream? Graeme

9 years, 8 months

[PATCH v2 0/3] Correct for ACPI 5.1->6.0 spec changes in MADT GICC entries

by Al Stone

In the ACPI 5.1 version of the spec, the struct for the GICC subtable (struct acpi_madt_generic_interrupt) of the MADT is 76 bytes long; in ACPI 6.0, the struct is 80 bytes long. But, there is only one definition in ACPICA for this struct -- and that is the 6.0 version. Hence, when BAD_MADT_ENTRY() compares the struct size to the length in the GICC subtable, it fails if 5.1 structs are in use, and there are systems in the wild that have them. Note that this was found in linux-next and these patches apply against that tree and the arm64 kernel tree; 4.1-rc8 does not appear to have this problem since it still has the 5.1 struct definition. Even though there is precendent in ia64 code for ignoring the changes in size, this patch set instead tries to verify correctness. The first patch in the set adds macros for easily using the ACPI spec version. The second patch adds the BAD_MADT_GICC_ENTRY() macro that uses the version macros to check the GICC subtable only, accounting for the difference in specification versions that are possible. The final patch replaces BAD_MADT_ENTRY usage with the BAD_MADT_GICC_ENTRY macro in arm64 code, which is currently the only architecture affected. The BAD_MADT_ENTRY() will continue to work as is for all other MADT subtables. I have tested these patches on an APM Mustang with version 1.15 firmware, where the problem was found, and they fix the problem. Changes for v2: -- Replace magic constants with proper defines (Lorenzo) -- Minor syntax clean-up noted by checkpatch -- Send out CCs properly this time -- Minor clean-up of the paragraphs in this cover letter Al Stone (3): ACPI : introduce macros for using the ACPI specification version ACPI: add BAD_MADT_GICC_ENTRY() macro ACPI / ARM64 : use the new BAD_MADT_GICC_ENTRY macro arch/arm64/kernel/smp.c | 2 +- drivers/irqchip/irq-gic.c | 2 +- include/linux/acpi.h | 15 +++++++++++++++ 3 files changed, 17 insertions(+), 2 deletions(-) -- 2.4.0

9 years, 8 months

[RFC PATCH] irqchip / gicv3 / ACPI: Add GICR support via GICC structures

by Hanjun Guo

On systems supporting GICv3 and above, the field of GICR Base Address holds the 64-bit physical address of the associated Redistributor if the GIC Redistributors are not in the always-on power domain, so instead of init GICR regions via GIC redistributor stricture, init it with GICR base address in GICC structures. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- drivers/irqchip/irq-gic-acpi.c | 34 ++++++- drivers/irqchip/irq-gic-v3.c | 181 ++++++++++++++++++++++++++++++++--- include/linux/irqchip/arm-gic-acpi.h | 2 + 3 files changed, 200 insertions(+), 17 deletions(-) diff --git a/drivers/irqchip/irq-gic-acpi.c b/drivers/irqchip/irq-gic-acpi.c index 236bba5..732efa0 100644 --- a/drivers/irqchip/irq-gic-acpi.c +++ b/drivers/irqchip/irq-gic-acpi.c @@ -21,6 +21,11 @@ static u8 gic_version __initdata = ACPI_MADT_GIC_VERSION_NONE; static phys_addr_t dist_phy_base __initdata; +u8 __init acpi_gic_version(void) +{ + return gic_version; +} + static int __init acpi_gic_parse_distributor(struct acpi_subtable_header *header, const unsigned long end) @@ -38,6 +43,27 @@ acpi_gic_parse_distributor(struct acpi_subtable_header *header, } static int __init +gic_acpi_parse_madt_gicc(struct acpi_subtable_header *header, + const unsigned long end) +{ + struct acpi_madt_generic_interrupt *gicc; + + gicc = (struct acpi_madt_generic_interrupt *)header; + + if (BAD_MADT_ENTRY(gicc, end)) + return -EINVAL; + + /* + *If GICC is enabled but no gicr base address, which means GICR is + * not presented via GICC + */ + if ((gicc->flags & ACPI_MADT_ENABLED) && !gicc->gicr_base_address) + return -ENODEV; + + return 0; +} + +static int __init match_gic_redist(struct acpi_subtable_header *header, const unsigned long end) { return 0; @@ -54,8 +80,12 @@ static bool __init acpi_gic_redist_is_present(void) /* has at least one GIC redistributor entry */ if (count > 0) return true; - else - return false; + + /* else try to find GICR base in GICC entries */ + count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT, + gic_acpi_parse_madt_gicc, 0); + + return count > 0; } static int __init acpi_gic_version_init(void) diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index a1c4c74..755c940 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -389,9 +389,8 @@ static void __init gic_dist_init(void) writeq_relaxed(affinity, base + GICD_IROUTER + i * 8); } -static int gic_populate_rdist(void) +static int gic_populate_rdist_with_regions(u64 mpidr) { - u64 mpidr = cpu_logical_map(smp_processor_id()); u64 typer; u32 aff; int i; @@ -439,6 +438,33 @@ static int gic_populate_rdist(void) } while (!(typer & GICR_TYPER_LAST)); } + return -ENODEV; +} + +#ifdef CONFIG_ACPI +/* + * Populate redist when GIC redistributor address is presented in ACPI + * MADT GICC entries + */ +static int gic_populate_rdist_with_gicr_base(u64 mpidr); +#else +static inline int gic_populate_rdist_with_gicr_base(u64 mpidr) +{ + return -ENODEV; +} +#endif +static int gic_populate_rdist(void) +{ + u64 mpidr = cpu_logical_map(smp_processor_id()); + + if (!gic_data.nr_redist_regions) { + if (!gic_populate_rdist_with_gicr_base(mpidr)) + return 0; + } else { + if (!gic_populate_rdist_with_regions(mpidr)) + return 0; + } + /* We couldn't even deal with ourselves... */ WARN(true, "CPU%d: mpidr %llx has no re-distributor!\n", smp_processor_id(), (unsigned long long)mpidr); @@ -906,6 +932,16 @@ IRQCHIP_DECLARE(gic_v3, "arm,gic-v3", gic_of_init); #endif #ifdef CONFIG_ACPI + +struct acpi_gicc_redist { + struct list_head list; + u64 mpidr; + phys_addr_t phys_base; + void __iomem *redist_base; +}; + +static LIST_HEAD(redist_list); + static struct redist_region *redist_regs __initdata; static u32 nr_redist_regions __initdata; static phys_addr_t dist_phy_base __initdata; @@ -938,6 +974,17 @@ gic_acpi_register_redist(u64 phys_base, u64 size) return 0; } +static void __init +gic_acpi_release_redist_regions(void) +{ + int i; + + for (i = 0; i < nr_redist_regions; i++) + if (redist_regs[i].redist_base) + iounmap(redist_regs[i].redist_base); + kfree(redist_regs); +} + static int __init gic_acpi_parse_madt_redist(struct acpi_subtable_header *header, const unsigned long end) @@ -970,10 +1017,98 @@ gic_acpi_parse_madt_distributor(struct acpi_subtable_header *header, } static int __init -gic_v3_acpi_init(struct acpi_table_header *table) +gic_acpi_add_gicc_redist(phys_addr_t phys_base, u64 mpidr) { - int count, i, err = 0; + struct acpi_gicc_redist *redist; + + redist = kzalloc(sizeof(*redist), GFP_KERNEL); + if (!redist) + return -ENOMEM; + + redist->mpidr = mpidr; + redist->phys_base = phys_base; + + if (acpi_gic_version() == ACPI_MADT_GIC_VERSION_V3) + /* RD_base + SGI_base */ + redist->redist_base = ioremap(phys_base, 2 * SZ_64K); + else + /* + * RD_base + SGI_base + VLPI_base, + * we don't map reserved page as it's buggy to access it + */ + redist->redist_base = ioremap(phys_base, 3 * SZ_64K); + + if (!redist->redist_base) { + kfree(redist); + return -ENOMEM; + } + + list_add(&redist->list, &redist_list); + return 0; +} + +static void __init +gic_acpi_release_gicc_redist(void) +{ + struct acpi_gicc_redist *redist, *t; + + list_for_each_entry_safe(redist, t, &redist_list, list) { + list_del(&redist->list); + iounmap(redist->redist_base); + kfree(redist); + } +} + +static int __init +gic_acpi_parse_madt_gicc(struct acpi_subtable_header *header, + const unsigned long end) +{ + struct acpi_madt_generic_interrupt *gicc; + + gicc = (struct acpi_madt_generic_interrupt *)header; + + if (BAD_MADT_ENTRY(gicc, end)) + return -EINVAL; + + return gic_acpi_add_gicc_redist(gicc->gicr_base_address, + gicc->arm_mpidr); +} + +static int gic_populate_rdist_with_gicr_base(u64 mpidr) +{ + struct acpi_gicc_redist *redist; + void __iomem *ptr; + u32 reg; + + list_for_each_entry(redist, &redist_list, list) { + if (redist->mpidr != mpidr) + continue; + + ptr = redist->redist_base; + reg = readl_relaxed(ptr + GICR_PIDR2) & GIC_PIDR2_ARCH_MASK; + if (reg != GIC_PIDR2_ARCH_GICv3 && reg != GIC_PIDR2_ARCH_GICv4) { + pr_warn("No redistributor present @%p\n", ptr); + return -ENODEV; + } + + gic_data_rdist_rd_base() = ptr; + gic_data_rdist()->phys_base = redist->phys_base; + pr_info("CPU%d: found redistributor %llx phys base:%pa\n", + smp_processor_id(), + (unsigned long long)mpidr, + &gic_data_rdist()->phys_base); + return 0; + } + + return -ENODEV; +} + +static int __init +gic_acpi_init(struct acpi_table_header *table) +{ + int count, err = 0; void __iomem *dist_base; + bool no_gicr_entries = false; /* Get distributor base address */ count = acpi_parse_entries(ACPI_SIG_MADT, @@ -1000,32 +1135,48 @@ gic_v3_acpi_init(struct acpi_table_header *table) goto out_dist_unmap; } - /* Collect redistributor base addresses */ + /* Collect redistributor base addresses in GICR entries */ count = acpi_parse_entries(ACPI_SIG_MADT, sizeof(struct acpi_table_madt), gic_acpi_parse_madt_redist, table, ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR, 0); if (count <= 0) { - pr_info("No valid GICR entries exist\n"); - err = -EINVAL; - goto out_redist_unmap; + pr_info("No valid GICR entries exist, try GICC entries\n"); + gic_acpi_release_redist_regions(); + no_gicr_entries = true; + } else { + goto init_base; + } + + /* Collect redistributor base addresses in GICC entries */ + count = acpi_parse_entries(ACPI_SIG_MADT, + sizeof(struct acpi_table_madt), + gic_acpi_parse_madt_gicc, table, + ACPI_MADT_TYPE_GENERIC_INTERRUPT, 0); + if (count <= 0) { + pr_info("No valid GICC entries exist\n"); + goto out_release_redist; } +init_base: err = gic_init_bases(dist_base, redist_regs, nr_redist_regions, 0, NULL); if (err) - goto out_redist_unmap; + goto out_release_redist; acpi_irq_domain = gic_data.domain; return 0; -out_redist_unmap: - for (i = 0; i < nr_redist_regions; i++) - if (redist_regs[i].redist_base) - iounmap(redist_regs[i].redist_base); - kfree(redist_regs); +out_release_redist: + if (no_gicr_entries) { + if (!list_empty(&redist_list)) + gic_acpi_release_gicc_redist(); + } else { + gic_acpi_release_redist_regions(); + } out_dist_unmap: iounmap(dist_base); return err; } -IRQCHIP_ACPI_DECLARE(gic_v3, ACPI_MADT_GIC_VERSION_V3, gic_v3_acpi_init); +IRQCHIP_ACPI_DECLARE(gic_v3, ACPI_MADT_GIC_VERSION_V3, gic_acpi_init); +IRQCHIP_ACPI_DECLARE(gic_v4, ACPI_MADT_GIC_VERSION_V4, gic_acpi_init); #endif diff --git a/include/linux/irqchip/arm-gic-acpi.h b/include/linux/irqchip/arm-gic-acpi.h index a4a5edb..d54fe95 100644 --- a/include/linux/irqchip/arm-gic-acpi.h +++ b/include/linux/irqchip/arm-gic-acpi.h @@ -23,5 +23,7 @@ extern struct irq_domain *acpi_irq_domain; +u8 acpi_gic_version(void); + #endif /* CONFIG_ACPI */ #endif /* ARM_GIC_ACPI_H_ */ -- 1.9.1

9 years, 8 months

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Linaro-acpi July 2015