- Linaro-acpi - lists.linaro.org

[PATCH v4 00/13] Hardware Reduced Mode cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These are being submitted as an RFC to the linaro-acpi@ list so I can get some other eyes looking at them before sending them to linux-acpi@ where they really need to go. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled. However, there's no way I can think of or test all possible scenarios so feedback would be greatly appreciated. NB: these changes are only applicable to the LEG ACPI working tree. The macros in patch 1/13 will have to change for the linux-acpi tree. Changes for v4: -- Remove use of ACPI_HW_DEPENDENT_RETURN_{*} macros; they were not usable without invasive change. -- Completely remove global lock/unlock routines on ARM (vs #ifdef) Changes for v3: -- Consistent use of #if (!ACPI_REDUCED_HARDWARE) -- Use of ACPI_HW_DEPENDENT_RETURN_{*} macros -- Simplify wherever possible Changes for v2: -- Change patch series title -- Add in the FACS global lock patch as further hardware reduced mode cleanup that is needed -- Remove whitespace change that should not have gotten in [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… Al Stone (13): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE to enable this ACPI mode ACPI: bus master reload not supported in reduced HW mode ACPI: clean up compiler warning about uninitialized field ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: ARM: exclude calls on ARM platforms, not include them on x86 ACPI: ensure several FADT fields are only used in HW reduced mode ACPI: do not reserve memory regions for some FADT entries in HW reduced mode ACPI: in HW reduced mode, getting power latencies from FADT is not allowed ACPI: add clarifying comment about processor throttling in HW reduced mode ACPI: ACPI_FADT_C2_MP_SUPPORTED must be ignored in HW reduced mode ACPI: use of ACPI_FADT_32BIT_TIMER is not allowed in HW reduced mode ACPI: correct #ifdef so compilation without ACPI_REDUCED_HARDWARE works ACPI: ARM/ARM64: ensure the ACPI FACS global_lock is never used in HW reduced mode arch/arm/include/asm/acpi.h | 10 ---------- arch/arm64/include/asm/acpi.h | 10 ---------- drivers/acpi/Kconfig | 8 ++++++++ drivers/acpi/acpica/utxface.c | 3 ++- drivers/acpi/bus.c | 7 ++++--- drivers/acpi/osl.c | 28 ++++++++++++++++++++-------- drivers/acpi/pci_link.c | 14 ++++++++------ drivers/acpi/plat/arm/boot.c | 2 ++ drivers/acpi/processor_idle.c | 19 ++++++++++++++----- drivers/acpi/processor_throttling.c | 8 ++++++++ drivers/acpi/sleep.c | 2 +- include/acpi/acconfig.h | 2 +- include/acpi/acpixf.h | 3 +++ include/acpi/platform/aclinux.h | 6 ++++++ 14 files changed, 77 insertions(+), 45 deletions(-) -- 1.8.3.1

11 years, 7 months

7
23
0 0

[PATCH] ARM: ACPI: simplify directory structure

by Graeme Gregory

I don't think there is any need for such a deep directory structure and the filename boot.c was not very descriptive of what the file does. Make directory structure less deep and remane to arm-core.c Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- drivers/acpi/Makefile | 3 +- drivers/acpi/plat/Makefile | 2 + drivers/acpi/plat/arm-core.c | 695 +++++++++++++++++++++++++++++++++++++++++ drivers/acpi/plat/arm/Makefile | 2 - drivers/acpi/plat/arm/boot.c | 695 ----------------------------------------- 5 files changed, 698 insertions(+), 699 deletions(-) create mode 100644 drivers/acpi/plat/Makefile create mode 100644 drivers/acpi/plat/arm-core.c delete mode 100644 drivers/acpi/plat/arm/Makefile delete mode 100644 drivers/acpi/plat/arm/boot.c diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index a792d00..262f0be 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -84,5 +84,4 @@ obj-$(CONFIG_ACPI_PROCESSOR_AGGREGATOR) += acpi_pad.o obj-$(CONFIG_ACPI_APEI) += apei/ -obj-$(CONFIG_ACPI_ARM) += plat/arm/ - +obj-y += plat/ diff --git a/drivers/acpi/plat/Makefile b/drivers/acpi/plat/Makefile new file mode 100644 index 0000000..b65bcba --- /dev/null +++ b/drivers/acpi/plat/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_ACPI_ARM) += arm-core.o + diff --git a/drivers/acpi/plat/arm-core.c b/drivers/acpi/plat/arm-core.c new file mode 100644 index 0000000..b77af0f --- /dev/null +++ b/drivers/acpi/plat/arm-core.c @@ -0,0 +1,695 @@ +/* + * ARM/ARM64 Specific Low-Level ACPI Boot Support + * + * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh(a)intel.com> + * Copyright (C) 2001 Jun Nakajima <jun.nakajima(a)intel.com> + * Copyright (C) 2013, Al Stone <al.stone(a)linaro.org> (ARM version) + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include <linux/init.h> +#include <linux/acpi.h> +#include <linux/acpi_pmtmr.h> +#include <linux/efi.h> +#include <linux/cpumask.h> +#include <linux/memblock.h> +#include <linux/module.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/slab.h> +#include <linux/bootmem.h> +#include <linux/ioport.h> +#include <linux/pci.h> + +#include <asm/pgtable.h> +#include <asm/io.h> +#include <asm/smp.h> +#include <asm/acpi.h> + +/* + * We never plan to use RSDT on arm/arm64 as its deprecated in spec but this + * variable is still required by the ACPI core + */ +u32 acpi_rsdt_forced; + +int acpi_disabled; +EXPORT_SYMBOL(acpi_disabled); + +/* available_cpus here means enabled cpu in MADT */ +int available_cpus; + +/* Map logic cpu id to physical APIC id. + * APIC = GIC cpu interface on ARM + */ +volatile int arm_cpu_to_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = -1 }; +int boot_cpu_apic_id = -1; + +#define BAD_MADT_ENTRY(entry, end) ( \ + (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ + ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) + +#define PREFIX "ACPI: " + +int acpi_noirq; /* skip ACPI IRQ initialization */ +int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ +EXPORT_SYMBOL(acpi_pci_disabled); + +int acpi_lapic; +int acpi_ioapic; +int acpi_strict; + +u8 acpi_sci_flags __initdata; +int acpi_sci_override_gsi __initdata; +int acpi_skip_timer_override __initdata; +int acpi_use_timer_override __initdata; +int acpi_fix_pin2_polarity __initdata; +static u64 acpi_lapic_addr __initdata; + +struct acpi_arm_root acpi_arm_rsdp_info; /* info about RSDP from FDT */ + +/* + * Boot-time Configuration + */ + +/* + * The default interrupt routing model is PIC (8259). This gets + * overridden if IOAPICs are enumerated (below). + * + * Since we're on ARM, it clearly has to be GIC. + */ +enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC; + +static unsigned int gsi_to_irq(unsigned int gsi) +{ + int irq = irq_create_mapping(NULL, gsi); + + return irq; +} + +char *__init __acpi_map_table(phys_addr_t phys, unsigned long size) +{ + if (!phys || !size) + return NULL; + + return early_memremap(phys, size); +} + +void __init __acpi_unmap_table(char *map, unsigned long size) +{ + if (!map || !size) + return; + + early_iounmap(map, size); + return; +} + +static int __init acpi_parse_madt(struct acpi_table_header *table) +{ + struct acpi_table_madt *madt = NULL; + + madt = (struct acpi_table_madt *)table; + if (!madt) { + pr_warn(PREFIX "Unable to map MADT\n"); + return -ENODEV; + } + + if (madt->address) { + acpi_lapic_addr = (u64) madt->address; + + pr_info(PREFIX "Local APIC address 0x%08x\n", madt->address); + } + + return 0; +} + +/* Local APIC = GIC cpu interface on ARM */ +static void acpi_register_lapic(int id, u8 enabled) +{ + int cpu; + + if (id >= MAX_LOCAL_APIC) { + pr_info(PREFIX "skipped apicid that is too big\n"); + return; + } + + total_cpus++; + if (!enabled) + return; + + available_cpus++; + + /* allocate a logic cpu id for the new comer */ + if (boot_cpu_apic_id == id) { + /* + * boot_cpu_init() already hold bit 0 in cpu_present_mask + * for BSP, no need to allocte again. + */ + cpu = 0; + } else { + cpu = cpumask_next_zero(-1, cpu_present_mask); + } + + /* map the logic cpu id to APIC id */ + arm_cpu_to_apicid[cpu] = id; + + set_cpu_present(cpu, true); + set_cpu_possible(cpu, true); +} + +static int __init +acpi_parse_gic(struct acpi_subtable_header *header, const unsigned long end) +{ + struct acpi_madt_generic_interrupt *processor = NULL; + + processor = (struct acpi_madt_generic_interrupt *)header; + + if (BAD_MADT_ENTRY(processor, end)) + return -EINVAL; + + acpi_table_print_madt_entry(header); + + /* + * We need to register disabled CPU as well to permit + * counting disabled CPUs. This allows us to size + * cpus_possible_map more accurately, to permit + * to not preallocating memory for all NR_CPUS + * when we use CPU hotplug. + */ + acpi_register_lapic(processor->gic_id, + processor->flags & ACPI_MADT_ENABLED); + + return 0; +} + +static int __init +acpi_parse_gic_distributor(struct acpi_subtable_header *header, + const unsigned long end) +{ + struct acpi_madt_generic_distributor *distributor = NULL; + + distributor = (struct acpi_madt_generic_distributor *)header; + + if (BAD_MADT_ENTRY(distributor, end)) + return -EINVAL; + + acpi_table_print_madt_entry(header); + + /* TODO: handle with the base_address and irq_base for irq system */ + + return 0; +} + +int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) +{ + *irq = gsi_to_irq(gsi); + + return 0; +} +EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); + +static int acpi_register_gsi_pic(struct device *dev, u32 gsi, + int trigger, int polarity) +{ +#ifdef CONFIG_PCI + /* + * Make sure all (legacy) PCI IRQs are set as level-triggered. + */ + if (trigger == ACPI_LEVEL_SENSITIVE) + eisa_set_level_irq(gsi); +#endif + + return gsi; +} + +static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, + int trigger, int polarity) +{ + return gsi; +} + +int (*__acpi_register_gsi)(struct device *dev, u32 gsi, + int trigger, int polarity) = acpi_register_gsi_pic; + +/* + * success: return IRQ number (>=0) + * failure: return < 0 + */ +int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) +{ + unsigned int irq; + unsigned int plat_gsi = gsi; + + plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); + + irq = gsi_to_irq(plat_gsi); + + return irq; +} +EXPORT_SYMBOL_GPL(acpi_register_gsi); + +void acpi_unregister_gsi(u32 gsi) +{ +} +EXPORT_SYMBOL_GPL(acpi_unregister_gsi); + +void __init acpi_set_irq_model_pic(void) +{ + acpi_irq_model = ACPI_IRQ_MODEL_PIC; + __acpi_register_gsi = acpi_register_gsi_pic; + acpi_ioapic = 0; +} + +void __init acpi_set_irq_model_gic(void) +{ + acpi_irq_model = ACPI_IRQ_MODEL_GIC; + __acpi_register_gsi = acpi_register_gsi_ioapic; + acpi_ioapic = 1; +} + +static int __initdata setup_possible_cpus = -1; +static int __init _setup_possible_cpus(char *str) +{ + get_option(&str, &setup_possible_cpus); + return 0; +} +early_param("possible_cpus", _setup_possible_cpus); + +/* + * cpu_possible_mask should be static, it cannot change as cpu's + * are onlined, or offlined. The reason is per-cpu data-structures + * are allocated by some modules at init time, and dont expect to + * do this dynamically on cpu arrival/departure. + * cpu_present_mask on the other hand can change dynamically. + * In case when cpu_hotplug is not compiled, then we resort to current + * behaviour, which is cpu_possible == cpu_present. + * - Ashok Raj + * + * Three ways to find out the number of additional hotplug CPUs: + * - If the BIOS specified disabled CPUs in ACPI/mptables use that. + * - The user can overwrite it with possible_cpus=NUM + * - Otherwise don't reserve additional CPUs. + * We do this because additional CPUs waste a lot of memory. + * -AK + */ +void __init prefill_possible_map(void) +{ + int i; + int possible, disabled_cpus; + + disabled_cpus = total_cpus - available_cpus; + + if (setup_possible_cpus == -1) { + if (disabled_cpus > 0) + setup_possible_cpus = disabled_cpus; + else + setup_possible_cpus = 0; + } + + possible = available_cpus + setup_possible_cpus; + + pr_info("SMP: the system is limited to %d CPUs\n", nr_cpu_ids); + + /* + * On armv8 foundation model --cores=4 lets nr_cpu_ids=4, so we can't + * get possible map correctly when more than 4 APIC entries in MADT. + */ + if (possible > nr_cpu_ids) + possible = nr_cpu_ids; + + pr_info("SMP: Allowing %d CPUs, %d hotplug CPUs\n", + possible, max((possible - available_cpus), 0)); + + for (i = 0; i < possible; i++) + set_cpu_possible(i, true); + for (; i < NR_CPUS; i++) + set_cpu_possible(i, false); +} + +/* + * ACPI based hotplug support for CPU + */ +#ifdef CONFIG_ACPI_HOTPLUG_CPU +#include <acpi/processor.h> + +static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) +{ +#ifdef CONFIG_ACPI_NUMA + int nid; + + nid = acpi_get_node(handle); + if (nid == -1 || !node_online(nid)) + return; + set_apicid_to_node(physid, nid); + numa_set_node(cpu, nid); +#endif +} + +static int _acpi_map_lsapic(acpi_handle handle, int *pcpu) +{ + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + struct acpi_madt_generic_interrupt *lapic; + cpumask_var_t tmp_map, new_map; + u8 physid; + int cpu; + int retval = -ENOMEM; + + if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) + return -EINVAL; + + if (!buffer.length || !buffer.pointer) + return -EINVAL; + + obj = buffer.pointer; + if (obj->type != ACPI_TYPE_BUFFER || + obj->buffer.length < sizeof(*lapic)) { + kfree(buffer.pointer); + return -EINVAL; + } + + lapic = (struct acpi_madt_generic_interrupt *)obj->buffer.pointer; + + if (lapic->header.type != ACPI_MADT_TYPE_GENERIC_INTERRUPT || + !(lapic->flags & ACPI_MADT_ENABLED)) { + kfree(buffer.pointer); + return -EINVAL; + } + + physid = lapic->gic_id; + + kfree(buffer.pointer); + buffer.length = ACPI_ALLOCATE_BUFFER; + buffer.pointer = NULL; + lapic = NULL; + + if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) + goto out; + + if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) + goto free_tmp_map; + + cpumask_copy(tmp_map, cpu_present_mask); + acpi_register_lapic(physid, ACPI_MADT_ENABLED); + + /* + * If acpi_register_lapic successfully generates a new logical cpu + * number, then the following will get us exactly what was mapped + */ + cpumask_andnot(new_map, cpu_present_mask, tmp_map); + if (cpumask_empty(new_map)) { + pr_err("Unable to map lapic to logical cpu number\n"); + retval = -EINVAL; + goto free_new_map; + } + + acpi_processor_set_pdc(handle); + + cpu = cpumask_first(new_map); + acpi_map_cpu2node(handle, cpu, physid); + + *pcpu = cpu; + retval = 0; + +free_new_map: + free_cpumask_var(new_map); +free_tmp_map: + free_cpumask_var(tmp_map); +out: + return retval; +} + +/* wrapper to silence section mismatch warning */ +int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) +{ + return _acpi_map_lsapic(handle, pcpu); +} +EXPORT_SYMBOL(acpi_map_lsapic); + +int acpi_unmap_lsapic(int cpu) +{ + arm_cpu_to_apicid[cpu] = -1; + set_cpu_present(cpu, false); + available_cpus--; + + return 0; +} +EXPORT_SYMBOL(acpi_unmap_lsapic); +#endif /* CONFIG_ACPI_HOTPLUG_CPU */ + +/* Local APIC = GIC cpu interface on ARM */ +static int __init acpi_parse_madt_lapic_entries(void) +{ + int count; + + /* + * do a partial walk of MADT to determine how many CPUs + * we have including disabled CPUs + */ + count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT, + acpi_parse_gic, MAX_LOCAL_APIC); + + if (!count) { + pr_err(PREFIX "No LAPIC entries present\n"); + /* TBD: Cleanup to allow fallback to MPS */ + return -ENODEV; + } else if (count < 0) { + pr_err(PREFIX "Error parsing LAPIC entry\n"); + /* TBD: Cleanup to allow fallback to MPS */ + return count; + } + +#ifdef CONFIG_SMP + if (available_cpus == 0) { + pr_info(PREFIX "Found 0 CPUS; assuming 1\n"); + /* FIXME: should be the real GIC id read from hardware */ + arm_cpu_to_apicid[available_cpus] = 0; + available_cpus = 1; /* We've got at least one of these */ + } +#endif + /* Make boot-up look pretty */ + pr_info("%d CPUs available, %d CPUs total\n", available_cpus, + total_cpus); + + return 0; +} + +static int __init acpi_parse_fadt(struct acpi_table_header *table) +{ + return 0; +} + +/* + * Parse IOAPIC related entries in MADT + * returns 0 on success, < 0 on error + * IOAPIC = GIC distributor on ARM + */ +static int __init acpi_parse_madt_ioapic_entries(void) +{ + int count; + + /* + * ACPI interpreter is required to complete interrupt setup, + * so if it is off, don't enumerate the io-apics with ACPI. + * If MPS is present, it will handle them, + * otherwise the system will stay in PIC mode + */ + if (acpi_disabled || acpi_noirq) + return -ENODEV; + + count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR, + acpi_parse_gic_distributor, MAX_IO_APICS); + + if (!count) { + pr_err(PREFIX "No IOAPIC entries present\n"); + return -ENODEV; + } else if (count < 0) { + pr_err(PREFIX "Error parsing IOAPIC entry\n"); + return count; + } + + return 0; +} + +static void __init early_acpi_process_madt(void) +{ + /* should I introduce CONFIG_ARM_LOCAL_APIC like x86 does? */ + acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt); +} + +static void __init acpi_process_madt(void) +{ + /* should I introduce CONFIG_ARM_LOCAL_APIC like x86 does? */ + int error; + + if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { + + /* + * Parse MADT LAPIC entries + */ + error = acpi_parse_madt_lapic_entries(); + if (!error) { + acpi_lapic = 1; + + /* + * Parse MADT IO-APIC entries + */ + error = acpi_parse_madt_ioapic_entries(); + if (!error) + acpi_set_irq_model_gic(); + } + } + + /* + * ACPI supports both logical (e.g. Hyper-Threading) and physical + * processors, where MPS only supports physical. + */ + if (acpi_lapic && acpi_ioapic) + pr_info("Using ACPI (MADT) for SMP configuration " + "information\n"); + else if (acpi_lapic) + pr_info("Using ACPI for processor (LAPIC) " + "configuration information\n"); + + return; +} + +/* + * ========== OLD COMMENTS FROM x86 ================================= + * acpi_boot_table_init() and acpi_boot_init() + * called from setup_arch(), always. + * 1. checksums all tables + * 2. enumerates lapics + * 3. enumerates io-apics + * + * acpi_table_init() is separate to allow reading SRAT without + * other side effects. + * + * side effects of acpi_boot_init: + * acpi_lapic = 1 if LAPIC found + * acpi_ioapic = 1 if IOAPIC found + * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; + * if acpi_blacklisted() acpi_disabled = 1; + * acpi_irq_model=... + * ... + * ================================================================== + * + * We have to approach this a little different on ARMv7. We are + * passed in an ACPI blob and we really have no idea where in RAM + * it will be located. So, what should have been the physical + * addresses of other tables cannot really be hardcoded into the + * tables. What we will do is put an offset in the blob that is + * the offset from the beginning of the RSDP structure. However, + * what that means is that we have to unpack the blob and do a + * bit of fixup work on the offsets to turn them into kernel + * virtual addresses so we can pass them on for later use. + */ +void __init acpi_boot_table_init(void) +{ + /* + * If acpi_disabled, bail out + */ + if (acpi_disabled) + return; + + /* + * Initialize the ACPI boot-time table parser. + */ + if (acpi_table_init()) { + disable_acpi(); + return; + } +} + +int __init early_acpi_boot_init(void) +{ + /* + * If acpi_disabled, bail out + */ + if (acpi_disabled) + return 1; + + /* + * Process the Multiple APIC Description Table (MADT), if present + */ + early_acpi_process_madt(); + + return 0; +} + +int __init acpi_boot_init(void) +{ + /* + * If acpi_disabled, bail out + */ + if (acpi_disabled) + return 1; + + /* + * set sci_int and PM timer address + */ + acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); + + /* + * Process the Multiple APIC Description Table (MADT), if present + */ + acpi_process_madt(); + + return 0; +} + +/* + * make sure that the address passed for ACPI tables which is normall in + * system ram is removed from the kernel memory map + */ +void __init arm_acpi_reserve_memory() +{ + unsigned long section_offset; + unsigned long num_sections; + phys_addr_t addr = acpi_arm_rsdp_info.phys_address; + int size = acpi_arm_rsdp_info.size; + + /* if ACPI tables were not passed in FDT then escape here */ + if (!addr || !size) + return; + + section_offset = addr - (addr & SECTION_MASK); + num_sections = size / SECTION_SIZE; + if (size % SECTION_SIZE) + num_sections++; + + memblock_remove(addr - section_offset, num_sections * SECTION_SIZE); +} + +static int __init parse_acpi(char *arg) +{ + if (!arg) + return -EINVAL; + + /* "acpi=off" disables both ACPI table parsing and interpreter */ + if (strcmp(arg, "off") == 0) { + disable_acpi(); + } + /* acpi=strict disables out-of-spec workarounds */ + else if (strcmp(arg, "strict") == 0) { + acpi_strict = 1; + } + return 0; +} +early_param("acpi", parse_acpi); diff --git a/drivers/acpi/plat/arm/Makefile b/drivers/acpi/plat/arm/Makefile deleted file mode 100644 index 9d59aaf..0000000 --- a/drivers/acpi/plat/arm/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -obj-y += boot.o - diff --git a/drivers/acpi/plat/arm/boot.c b/drivers/acpi/plat/arm/boot.c deleted file mode 100644 index a912a7a..0000000 --- a/drivers/acpi/plat/arm/boot.c +++ /dev/null @@ -1,695 +0,0 @@ -/* - * boot.c - Architecture-Specific Low-Level ACPI Boot Support - * - * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh(a)intel.com> - * Copyright (C) 2001 Jun Nakajima <jun.nakajima(a)intel.com> - * Copyright (C) 2013, Al Stone <al.stone(a)linaro.org> (ARM version) - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - */ - -#include <linux/init.h> -#include <linux/acpi.h> -#include <linux/acpi_pmtmr.h> -#include <linux/efi.h> -#include <linux/cpumask.h> -#include <linux/memblock.h> -#include <linux/module.h> -#include <linux/irq.h> -#include <linux/irqdomain.h> -#include <linux/slab.h> -#include <linux/bootmem.h> -#include <linux/ioport.h> -#include <linux/pci.h> - -#include <asm/pgtable.h> -#include <asm/io.h> -#include <asm/smp.h> -#include <asm/acpi.h> - -/* - * We never plan to use RSDT on arm/arm64 as its deprecated in spec but this - * variable is still required by the ACPI core - */ -u32 acpi_rsdt_forced; - -int acpi_disabled; -EXPORT_SYMBOL(acpi_disabled); - -/* available_cpus here means enabled cpu in MADT */ -int available_cpus; - -/* Map logic cpu id to physical APIC id. - * APIC = GIC cpu interface on ARM - */ -volatile int arm_cpu_to_apicid[NR_CPUS] = { [0 ... NR_CPUS-1] = -1 }; -int boot_cpu_apic_id = -1; - -#define BAD_MADT_ENTRY(entry, end) ( \ - (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ - ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) - -#define PREFIX "ACPI: " - -int acpi_noirq; /* skip ACPI IRQ initialization */ -int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ -EXPORT_SYMBOL(acpi_pci_disabled); - -int acpi_lapic; -int acpi_ioapic; -int acpi_strict; - -u8 acpi_sci_flags __initdata; -int acpi_sci_override_gsi __initdata; -int acpi_skip_timer_override __initdata; -int acpi_use_timer_override __initdata; -int acpi_fix_pin2_polarity __initdata; -static u64 acpi_lapic_addr __initdata; - -struct acpi_arm_root acpi_arm_rsdp_info; /* info about RSDP from FDT */ - -/* - * Boot-time Configuration - */ - -/* - * The default interrupt routing model is PIC (8259). This gets - * overridden if IOAPICs are enumerated (below). - * - * Since we're on ARM, it clearly has to be GIC. - */ -enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_GIC; - -static unsigned int gsi_to_irq(unsigned int gsi) -{ - int irq = irq_create_mapping(NULL, gsi); - - return irq; -} - -char *__init __acpi_map_table(phys_addr_t phys, unsigned long size) -{ - if (!phys || !size) - return NULL; - - return early_memremap(phys, size); -} - -void __init __acpi_unmap_table(char *map, unsigned long size) -{ - if (!map || !size) - return; - - early_iounmap(map, size); - return; -} - -static int __init acpi_parse_madt(struct acpi_table_header *table) -{ - struct acpi_table_madt *madt = NULL; - - madt = (struct acpi_table_madt *)table; - if (!madt) { - pr_warn(PREFIX "Unable to map MADT\n"); - return -ENODEV; - } - - if (madt->address) { - acpi_lapic_addr = (u64) madt->address; - - pr_info(PREFIX "Local APIC address 0x%08x\n", madt->address); - } - - return 0; -} - -/* Local APIC = GIC cpu interface on ARM */ -static void acpi_register_lapic(int id, u8 enabled) -{ - int cpu; - - if (id >= MAX_LOCAL_APIC) { - pr_info(PREFIX "skipped apicid that is too big\n"); - return; - } - - total_cpus++; - if (!enabled) - return; - - available_cpus++; - - /* allocate a logic cpu id for the new comer */ - if (boot_cpu_apic_id == id) { - /* - * boot_cpu_init() already hold bit 0 in cpu_present_mask - * for BSP, no need to allocte again. - */ - cpu = 0; - } else { - cpu = cpumask_next_zero(-1, cpu_present_mask); - } - - /* map the logic cpu id to APIC id */ - arm_cpu_to_apicid[cpu] = id; - - set_cpu_present(cpu, true); - set_cpu_possible(cpu, true); -} - -static int __init -acpi_parse_gic(struct acpi_subtable_header *header, const unsigned long end) -{ - struct acpi_madt_generic_interrupt *processor = NULL; - - processor = (struct acpi_madt_generic_interrupt *)header; - - if (BAD_MADT_ENTRY(processor, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - /* - * We need to register disabled CPU as well to permit - * counting disabled CPUs. This allows us to size - * cpus_possible_map more accurately, to permit - * to not preallocating memory for all NR_CPUS - * when we use CPU hotplug. - */ - acpi_register_lapic(processor->gic_id, - processor->flags & ACPI_MADT_ENABLED); - - return 0; -} - -static int __init -acpi_parse_gic_distributor(struct acpi_subtable_header *header, - const unsigned long end) -{ - struct acpi_madt_generic_distributor *distributor = NULL; - - distributor = (struct acpi_madt_generic_distributor *)header; - - if (BAD_MADT_ENTRY(distributor, end)) - return -EINVAL; - - acpi_table_print_madt_entry(header); - - /* TODO: handle with the base_address and irq_base for irq system */ - - return 0; -} - -int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) -{ - *irq = gsi_to_irq(gsi); - - return 0; -} -EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); - -static int acpi_register_gsi_pic(struct device *dev, u32 gsi, - int trigger, int polarity) -{ -#ifdef CONFIG_PCI - /* - * Make sure all (legacy) PCI IRQs are set as level-triggered. - */ - if (trigger == ACPI_LEVEL_SENSITIVE) - eisa_set_level_irq(gsi); -#endif - - return gsi; -} - -static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, - int trigger, int polarity) -{ - return gsi; -} - -int (*__acpi_register_gsi)(struct device *dev, u32 gsi, - int trigger, int polarity) = acpi_register_gsi_pic; - -/* - * success: return IRQ number (>=0) - * failure: return < 0 - */ -int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) -{ - unsigned int irq; - unsigned int plat_gsi = gsi; - - plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); - - irq = gsi_to_irq(plat_gsi); - - return irq; -} -EXPORT_SYMBOL_GPL(acpi_register_gsi); - -void acpi_unregister_gsi(u32 gsi) -{ -} -EXPORT_SYMBOL_GPL(acpi_unregister_gsi); - -void __init acpi_set_irq_model_pic(void) -{ - acpi_irq_model = ACPI_IRQ_MODEL_PIC; - __acpi_register_gsi = acpi_register_gsi_pic; - acpi_ioapic = 0; -} - -void __init acpi_set_irq_model_gic(void) -{ - acpi_irq_model = ACPI_IRQ_MODEL_GIC; - __acpi_register_gsi = acpi_register_gsi_ioapic; - acpi_ioapic = 1; -} - -static int __initdata setup_possible_cpus = -1; -static int __init _setup_possible_cpus(char *str) -{ - get_option(&str, &setup_possible_cpus); - return 0; -} -early_param("possible_cpus", _setup_possible_cpus); - -/* - * cpu_possible_mask should be static, it cannot change as cpu's - * are onlined, or offlined. The reason is per-cpu data-structures - * are allocated by some modules at init time, and dont expect to - * do this dynamically on cpu arrival/departure. - * cpu_present_mask on the other hand can change dynamically. - * In case when cpu_hotplug is not compiled, then we resort to current - * behaviour, which is cpu_possible == cpu_present. - * - Ashok Raj - * - * Three ways to find out the number of additional hotplug CPUs: - * - If the BIOS specified disabled CPUs in ACPI/mptables use that. - * - The user can overwrite it with possible_cpus=NUM - * - Otherwise don't reserve additional CPUs. - * We do this because additional CPUs waste a lot of memory. - * -AK - */ -void __init prefill_possible_map(void) -{ - int i; - int possible, disabled_cpus; - - disabled_cpus = total_cpus - available_cpus; - - if (setup_possible_cpus == -1) { - if (disabled_cpus > 0) - setup_possible_cpus = disabled_cpus; - else - setup_possible_cpus = 0; - } - - possible = available_cpus + setup_possible_cpus; - - pr_info("SMP: the system is limited to %d CPUs\n", nr_cpu_ids); - - /* - * On armv8 foundation model --cores=4 lets nr_cpu_ids=4, so we can't - * get possible map correctly when more than 4 APIC entries in MADT. - */ - if (possible > nr_cpu_ids) - possible = nr_cpu_ids; - - pr_info("SMP: Allowing %d CPUs, %d hotplug CPUs\n", - possible, max((possible - available_cpus), 0)); - - for (i = 0; i < possible; i++) - set_cpu_possible(i, true); - for (; i < NR_CPUS; i++) - set_cpu_possible(i, false); -} - -/* - * ACPI based hotplug support for CPU - */ -#ifdef CONFIG_ACPI_HOTPLUG_CPU -#include <acpi/processor.h> - -static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) -{ -#ifdef CONFIG_ACPI_NUMA - int nid; - - nid = acpi_get_node(handle); - if (nid == -1 || !node_online(nid)) - return; - set_apicid_to_node(physid, nid); - numa_set_node(cpu, nid); -#endif -} - -static int _acpi_map_lsapic(acpi_handle handle, int *pcpu) -{ - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - union acpi_object *obj; - struct acpi_madt_generic_interrupt *lapic; - cpumask_var_t tmp_map, new_map; - u8 physid; - int cpu; - int retval = -ENOMEM; - - if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) - return -EINVAL; - - if (!buffer.length || !buffer.pointer) - return -EINVAL; - - obj = buffer.pointer; - if (obj->type != ACPI_TYPE_BUFFER || - obj->buffer.length < sizeof(*lapic)) { - kfree(buffer.pointer); - return -EINVAL; - } - - lapic = (struct acpi_madt_generic_interrupt *)obj->buffer.pointer; - - if (lapic->header.type != ACPI_MADT_TYPE_GENERIC_INTERRUPT || - !(lapic->flags & ACPI_MADT_ENABLED)) { - kfree(buffer.pointer); - return -EINVAL; - } - - physid = lapic->gic_id; - - kfree(buffer.pointer); - buffer.length = ACPI_ALLOCATE_BUFFER; - buffer.pointer = NULL; - lapic = NULL; - - if (!alloc_cpumask_var(&tmp_map, GFP_KERNEL)) - goto out; - - if (!alloc_cpumask_var(&new_map, GFP_KERNEL)) - goto free_tmp_map; - - cpumask_copy(tmp_map, cpu_present_mask); - acpi_register_lapic(physid, ACPI_MADT_ENABLED); - - /* - * If acpi_register_lapic successfully generates a new logical cpu - * number, then the following will get us exactly what was mapped - */ - cpumask_andnot(new_map, cpu_present_mask, tmp_map); - if (cpumask_empty(new_map)) { - pr_err("Unable to map lapic to logical cpu number\n"); - retval = -EINVAL; - goto free_new_map; - } - - acpi_processor_set_pdc(handle); - - cpu = cpumask_first(new_map); - acpi_map_cpu2node(handle, cpu, physid); - - *pcpu = cpu; - retval = 0; - -free_new_map: - free_cpumask_var(new_map); -free_tmp_map: - free_cpumask_var(tmp_map); -out: - return retval; -} - -/* wrapper to silence section mismatch warning */ -int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) -{ - return _acpi_map_lsapic(handle, pcpu); -} -EXPORT_SYMBOL(acpi_map_lsapic); - -int acpi_unmap_lsapic(int cpu) -{ - arm_cpu_to_apicid[cpu] = -1; - set_cpu_present(cpu, false); - available_cpus--; - - return 0; -} -EXPORT_SYMBOL(acpi_unmap_lsapic); -#endif /* CONFIG_ACPI_HOTPLUG_CPU */ - -/* Local APIC = GIC cpu interface on ARM */ -static int __init acpi_parse_madt_lapic_entries(void) -{ - int count; - - /* - * do a partial walk of MADT to determine how many CPUs - * we have including disabled CPUs - */ - count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_INTERRUPT, - acpi_parse_gic, MAX_LOCAL_APIC); - - if (!count) { - pr_err(PREFIX "No LAPIC entries present\n"); - /* TBD: Cleanup to allow fallback to MPS */ - return -ENODEV; - } else if (count < 0) { - pr_err(PREFIX "Error parsing LAPIC entry\n"); - /* TBD: Cleanup to allow fallback to MPS */ - return count; - } - -#ifdef CONFIG_SMP - if (available_cpus == 0) { - pr_info(PREFIX "Found 0 CPUS; assuming 1\n"); - /* FIXME: should be the real GIC id read from hardware */ - arm_cpu_to_apicid[available_cpus] = 0; - available_cpus = 1; /* We've got at least one of these */ - } -#endif - /* Make boot-up look pretty */ - pr_info("%d CPUs available, %d CPUs total\n", available_cpus, - total_cpus); - - return 0; -} - -static int __init acpi_parse_fadt(struct acpi_table_header *table) -{ - return 0; -} - -/* - * Parse IOAPIC related entries in MADT - * returns 0 on success, < 0 on error - * IOAPIC = GIC distributor on ARM - */ -static int __init acpi_parse_madt_ioapic_entries(void) -{ - int count; - - /* - * ACPI interpreter is required to complete interrupt setup, - * so if it is off, don't enumerate the io-apics with ACPI. - * If MPS is present, it will handle them, - * otherwise the system will stay in PIC mode - */ - if (acpi_disabled || acpi_noirq) - return -ENODEV; - - count = acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR, - acpi_parse_gic_distributor, MAX_IO_APICS); - - if (!count) { - pr_err(PREFIX "No IOAPIC entries present\n"); - return -ENODEV; - } else if (count < 0) { - pr_err(PREFIX "Error parsing IOAPIC entry\n"); - return count; - } - - return 0; -} - -static void __init early_acpi_process_madt(void) -{ - /* should I introduce CONFIG_ARM_LOCAL_APIC like x86 does? */ - acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt); -} - -static void __init acpi_process_madt(void) -{ - /* should I introduce CONFIG_ARM_LOCAL_APIC like x86 does? */ - int error; - - if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { - - /* - * Parse MADT LAPIC entries - */ - error = acpi_parse_madt_lapic_entries(); - if (!error) { - acpi_lapic = 1; - - /* - * Parse MADT IO-APIC entries - */ - error = acpi_parse_madt_ioapic_entries(); - if (!error) - acpi_set_irq_model_gic(); - } - } - - /* - * ACPI supports both logical (e.g. Hyper-Threading) and physical - * processors, where MPS only supports physical. - */ - if (acpi_lapic && acpi_ioapic) - pr_info("Using ACPI (MADT) for SMP configuration " - "information\n"); - else if (acpi_lapic) - pr_info("Using ACPI for processor (LAPIC) " - "configuration information\n"); - - return; -} - -/* - * ========== OLD COMMENTS FROM x86 ================================= - * acpi_boot_table_init() and acpi_boot_init() - * called from setup_arch(), always. - * 1. checksums all tables - * 2. enumerates lapics - * 3. enumerates io-apics - * - * acpi_table_init() is separate to allow reading SRAT without - * other side effects. - * - * side effects of acpi_boot_init: - * acpi_lapic = 1 if LAPIC found - * acpi_ioapic = 1 if IOAPIC found - * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; - * if acpi_blacklisted() acpi_disabled = 1; - * acpi_irq_model=... - * ... - * ================================================================== - * - * We have to approach this a little different on ARMv7. We are - * passed in an ACPI blob and we really have no idea where in RAM - * it will be located. So, what should have been the physical - * addresses of other tables cannot really be hardcoded into the - * tables. What we will do is put an offset in the blob that is - * the offset from the beginning of the RSDP structure. However, - * what that means is that we have to unpack the blob and do a - * bit of fixup work on the offsets to turn them into kernel - * virtual addresses so we can pass them on for later use. - */ -void __init acpi_boot_table_init(void) -{ - /* - * If acpi_disabled, bail out - */ - if (acpi_disabled) - return; - - /* - * Initialize the ACPI boot-time table parser. - */ - if (acpi_table_init()) { - disable_acpi(); - return; - } -} - -int __init early_acpi_boot_init(void) -{ - /* - * If acpi_disabled, bail out - */ - if (acpi_disabled) - return 1; - - /* - * Process the Multiple APIC Description Table (MADT), if present - */ - early_acpi_process_madt(); - - return 0; -} - -int __init acpi_boot_init(void) -{ - /* - * If acpi_disabled, bail out - */ - if (acpi_disabled) - return 1; - - /* - * set sci_int and PM timer address - */ - acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); - - /* - * Process the Multiple APIC Description Table (MADT), if present - */ - acpi_process_madt(); - - return 0; -} - -/* - * make sure that the address passed for ACPI tables which is normall in - * system ram is removed from the kernel memory map - */ -void __init arm_acpi_reserve_memory() -{ - unsigned long section_offset; - unsigned long num_sections; - phys_addr_t addr = acpi_arm_rsdp_info.phys_address; - int size = acpi_arm_rsdp_info.size; - - /* if ACPI tables were not passed in FDT then escape here */ - if (!addr || !size) - return; - - section_offset = addr - (addr & SECTION_MASK); - num_sections = size / SECTION_SIZE; - if (size % SECTION_SIZE) - num_sections++; - - memblock_remove(addr - section_offset, num_sections * SECTION_SIZE); -} - -static int __init parse_acpi(char *arg) -{ - if (!arg) - return -EINVAL; - - /* "acpi=off" disables both ACPI table parsing and interpreter */ - if (strcmp(arg, "off") == 0) { - disable_acpi(); - } - /* acpi=strict disables out-of-spec workarounds */ - else if (strcmp(arg, "strict") == 0) { - acpi_strict = 1; - } - return 0; -} -early_param("acpi", parse_acpi); -- 1.8.3.1

11 years, 7 months

3
2
0 0

[PATCH 1/2] ARM: ACPI: removce #if around acpi.h

by Graeme Gregory

Internally include file is already protected in the case of #ifndef CONFIG_ACPI so we don't need these checks. Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- arch/arm/kernel/setup.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index c3ed159..953ac40 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -30,9 +30,7 @@ #include <linux/bug.h> #include <linux/compiler.h> #include <linux/sort.h> -#ifdef CONFIG_ACPI #include <linux/acpi.h> -#endif #include <asm/unified.h> #include <asm/cp15.h> -- 1.8.3.1

11 years, 7 months

2
4
0 0

[PATCH 0/3] Further cleanups to prepare for upstream

by Hanjun Guo

This patch set is based on Graeme's patches "ARM: ACPI: simplify directory structure" and "ARM: ACPI: remove irq type switching from core". Hanjun Guo (3): ARM / ACPI: Remove acpi_lapic and acpi_ioapic related code ARM / ACPI: Remove the global lock definition in header file ARM / ACPI: Remove unused variables arch/arm/include/asm/acpi.h | 11 ----------- arch/arm64/include/asm/acpi.h | 11 ----------- drivers/acpi/plat/arm-core.c | 23 +---------------------- 3 files changed, 1 insertion(+), 44 deletions(-) -- 1.7.9.5

11 years, 7 months

2
4
0 0

[PATCH] ARM: ACPI: remove irq type switching from core

by Graeme Gregory

ARM/ARM64 only support GIC type under ACPI so remove the various x86 style IRQ type switching and the EISA support. Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- drivers/acpi/plat/arm-core.c | 43 +------------------------------------------ 1 file changed, 1 insertion(+), 42 deletions(-) diff --git a/drivers/acpi/plat/arm-core.c b/drivers/acpi/plat/arm-core.c index b77af0f..6710631 100644 --- a/drivers/acpi/plat/arm-core.c +++ b/drivers/acpi/plat/arm-core.c @@ -224,29 +224,6 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) } EXPORT_SYMBOL_GPL(acpi_gsi_to_irq); -static int acpi_register_gsi_pic(struct device *dev, u32 gsi, - int trigger, int polarity) -{ -#ifdef CONFIG_PCI - /* - * Make sure all (legacy) PCI IRQs are set as level-triggered. - */ - if (trigger == ACPI_LEVEL_SENSITIVE) - eisa_set_level_irq(gsi); -#endif - - return gsi; -} - -static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, - int trigger, int polarity) -{ - return gsi; -} - -int (*__acpi_register_gsi)(struct device *dev, u32 gsi, - int trigger, int polarity) = acpi_register_gsi_pic; - /* * success: return IRQ number (>=0) * failure: return < 0 @@ -256,8 +233,6 @@ int acpi_register_gsi(struct device *dev, u32 gsi, int trigger, int polarity) unsigned int irq; unsigned int plat_gsi = gsi; - plat_gsi = (*__acpi_register_gsi)(dev, gsi, trigger, polarity); - irq = gsi_to_irq(plat_gsi); return irq; @@ -269,20 +244,6 @@ void acpi_unregister_gsi(u32 gsi) } EXPORT_SYMBOL_GPL(acpi_unregister_gsi); -void __init acpi_set_irq_model_pic(void) -{ - acpi_irq_model = ACPI_IRQ_MODEL_PIC; - __acpi_register_gsi = acpi_register_gsi_pic; - acpi_ioapic = 0; -} - -void __init acpi_set_irq_model_gic(void) -{ - acpi_irq_model = ACPI_IRQ_MODEL_GIC; - __acpi_register_gsi = acpi_register_gsi_ioapic; - acpi_ioapic = 1; -} - static int __initdata setup_possible_cpus = -1; static int __init _setup_possible_cpus(char *str) { @@ -550,9 +511,7 @@ static void __init acpi_process_madt(void) /* * Parse MADT IO-APIC entries */ - error = acpi_parse_madt_ioapic_entries(); - if (!error) - acpi_set_irq_model_gic(); + acpi_parse_madt_ioapic_entries(); } } -- 1.8.3.1

11 years, 7 months

2
1
0 0

[PATCH] ACPI: clean up compiler warning about uninitialized field

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> Initialize pwr_btn_status as disabled which (a) makes sure it is in a proper state to start, and (b) cleans up a compiler warning about an uninitialized variable. Signed-off-by: Al Stone <al.stone(a)linaro.org> --- drivers/acpi/sleep.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 14df305..721e949 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -525,7 +525,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state) * generate wakeup events. */ if (ACPI_SUCCESS(status) && (acpi_state == ACPI_STATE_S3)) { - acpi_event_status pwr_btn_status; + acpi_event_status pwr_btn_status = ACPI_EVENT_FLAG_DISABLED; acpi_get_event_status(ACPI_EVENT_POWER_BUTTON, &pwr_btn_status); -- 1.8.3.1

11 years, 7 months

3
3
0 0

[PATCH] ACPI: ARM: remove sleep.c

by Graeme Gregory

sleep.c is not needed by the arm port as it will most likely be covered by some other power management framework like PSCI in the future so remove it. Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- drivers/acpi/plat/arm/Makefile | 1 - drivers/acpi/plat/arm/sleep.c | 126 ----------------------------------------- drivers/acpi/plat/arm/sleep.h | 17 ------ 3 files changed, 144 deletions(-) delete mode 100644 drivers/acpi/plat/arm/sleep.c delete mode 100644 drivers/acpi/plat/arm/sleep.h diff --git a/drivers/acpi/plat/arm/Makefile b/drivers/acpi/plat/arm/Makefile index a1f056d..9d59aaf 100644 --- a/drivers/acpi/plat/arm/Makefile +++ b/drivers/acpi/plat/arm/Makefile @@ -1,3 +1,2 @@ obj-y += boot.o -obj-y += sleep.o diff --git a/drivers/acpi/plat/arm/sleep.c b/drivers/acpi/plat/arm/sleep.c deleted file mode 100644 index 9129c7e..0000000 --- a/drivers/acpi/plat/arm/sleep.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - * sleep.c - x86-specific ACPI sleep support. - * - * Copyright (C) 2001-2003 Patrick Mochel - * Copyright (C) 2001-2003 Pavel Machek <pavel(a)ucw.cz> - */ - -int acpi_suspend_lowlevel(void) -{ - /* BOZO: dummy routine; see below for actual */ - return 0; -} - -#ifdef CONFIG_X86 -/* BOZO: disable everything for now... */ - -#include <linux/acpi.h> -#include <linux/bootmem.h> -#include <linux/memblock.h> -#include <linux/dmi.h> -#include <linux/cpumask.h> -#include <asm/segment.h> -#include <asm/desc.h> -#include <asm/pgtable.h> -#include <asm/cacheflush.h> -#include <asm/realmode.h> - -#include "../../realmode/rm/wakeup.h" -#include "sleep.h" - -unsigned long acpi_realmode_flags; - -#if defined(CONFIG_SMP) && defined(CONFIG_64BIT) -static char temp_stack[4096]; -#endif - -/** - * acpi_suspend_lowlevel - save kernel state - * - * Create an identity mapped page table and copy the wakeup routine to - * low memory. - */ -int acpi_suspend_lowlevel(void) -{ - struct wakeup_header *header = - (struct wakeup_header *) __va(real_mode_header->wakeup_header); - - if (header->signature != WAKEUP_HEADER_SIGNATURE) { - printk(KERN_ERR "wakeup header does not match\n"); - return -EINVAL; - } - - header->video_mode = saved_video_mode; - - header->pmode_behavior = 0; - -#ifndef CONFIG_64BIT - store_gdt((struct desc_ptr *)&header->pmode_gdt); - - if (!rdmsr_safe(MSR_EFER, - &header->pmode_efer_low, - &header->pmode_efer_high)) - header->pmode_behavior |= (1 << WAKEUP_BEHAVIOR_RESTORE_EFER); -#endif /* !CONFIG_64BIT */ - - header->pmode_cr0 = read_cr0(); - if (__this_cpu_read(cpu_info.cpuid_level) >= 0) { - header->pmode_cr4 = read_cr4(); - header->pmode_behavior |= (1 << WAKEUP_BEHAVIOR_RESTORE_CR4); - } - if (!rdmsr_safe(MSR_IA32_MISC_ENABLE, - &header->pmode_misc_en_low, - &header->pmode_misc_en_high)) - header->pmode_behavior |= - (1 << WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE); - header->realmode_flags = acpi_realmode_flags; - header->real_magic = 0x12345678; - -#ifndef CONFIG_64BIT - header->pmode_entry = (u32)&wakeup_pmode_return; - header->pmode_cr3 = (u32)__pa(&initial_page_table); - saved_magic = 0x12345678; -#else /* CONFIG_64BIT */ -#ifdef CONFIG_SMP - stack_start = (unsigned long)temp_stack + sizeof(temp_stack); - early_gdt_descr.address = - (unsigned long)get_cpu_gdt_table(smp_processor_id()); - initial_gs = per_cpu_offset(smp_processor_id()); -#endif - initial_code = (unsigned long)wakeup_long64; - saved_magic = 0x123456789abcdef0L; -#endif /* CONFIG_64BIT */ - - do_suspend_lowlevel(); - return 0; -} - -static int __init acpi_sleep_setup(char *str) -{ - while ((str != NULL) && (*str != '\0')) { - if (strncmp(str, "s3_bios", 7) == 0) - acpi_realmode_flags |= 1; - if (strncmp(str, "s3_mode", 7) == 0) - acpi_realmode_flags |= 2; - if (strncmp(str, "s3_beep", 7) == 0) - acpi_realmode_flags |= 4; -#ifdef CONFIG_HIBERNATION - if (strncmp(str, "s4_nohwsig", 10) == 0) - acpi_no_s4_hw_signature(); -#endif - if (strncmp(str, "nonvs", 5) == 0) - acpi_nvs_nosave(); - if (strncmp(str, "nonvs_s3", 8) == 0) - acpi_nvs_nosave_s3(); - if (strncmp(str, "old_ordering", 12) == 0) - acpi_old_suspend_ordering(); - str = strchr(str, ','); - if (str != NULL) - str += strspn(str, ", \t"); - } - return 1; -} - -__setup("acpi_sleep=", acpi_sleep_setup); - -#endif diff --git a/drivers/acpi/plat/arm/sleep.h b/drivers/acpi/plat/arm/sleep.h deleted file mode 100644 index 67f59f8..0000000 --- a/drivers/acpi/plat/arm/sleep.h +++ /dev/null @@ -1,17 +0,0 @@ -/* - * Variables and functions used by the code in sleep.c - */ - -#include <asm/realmode.h> - -extern unsigned long saved_video_mode; -extern long saved_magic; - -extern int wakeup_pmode_return; - -extern u8 wake_sleep_flags; - -extern unsigned long acpi_copy_wakeup_routine(unsigned long); -extern void wakeup_long64(void); - -extern void do_suspend_lowlevel(void); -- 1.8.3.1

11 years, 7 months

2
1
0 0

[PATCH v2 0/4] Convert arch timer to ACPI using GTDT

by Hanjun Guo

This patch trys to convert arch timer to ACPI using GTDT. it is based on the converting GIC to ACPI patchset. After convert the arch timer, it works fine when booted up (added AMBA patches). root@genericarmv8:~# cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 29: 0 0 0 0 GIC 29 arch_timer 30: 10751 1821 1888 1252 GIC 30 arch_timer 37: 123 0 0 0 GIC 37 uart-pl011 47: 5 0 0 0 GIC 47 eth0 74: 1031 0 0 0 GIC 74 virtio0 IPI0: 2249 1676 1229 1605 Rescheduling interrupts IPI1: 126 123 114 66 Function call interrupts IPI2: 0 0 0 0 Single function call interrupts IPI3: 0 0 0 0 CPU stop interrupts Err: v2: a) add missed early_iounmap() for acpi_get_tables(); b) add if(acpi_disabled) check c) rebased on the latest linaro-acpi kernel Hanjun Guo (4): clocksource: arch_timer: Use ACPI GTDT table to initialize arch timer ARMv8 / colcksource: use arch_timer_acpi_init() ARMv7 / clocksource: use arch_timer_acpi_init() Foundation model / dts: remove timer node since it is converted to ACPI arch/arm/kernel/time.c | 4 + arch/arm64/boot/dts/foundation-v8-acpi.dts | 4 + arch/arm64/kernel/time.c | 4 + drivers/clocksource/arm_arch_timer.c | 129 ++++++++++++++++++++++++---- include/clocksource/arm_arch_timer.h | 7 +- 5 files changed, 132 insertions(+), 16 deletions(-) -- 1.7.9.5

11 years, 7 months

2
5
0 0

[RFC PATCH 0/4] Convert arch timer to ACPI using GTDT

by Hanjun Guo

This patch trys to convert arch timer to ACPI using GTDT which based on the convert GIC to ACPI patchset. After convert the arch timer, it works fine when booted up. root@genericarmv8:~# cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 29: 0 0 0 0 GIC 29 arch_timer 30: 10751 1821 1888 1252 GIC 30 arch_timer 37: 123 0 0 0 GIC 37 uart-pl011 47: 5 0 0 0 GIC 47 eth0 74: 1031 0 0 0 GIC 74 virtio0 IPI0: 2249 1676 1229 1605 Rescheduling interrupts IPI1: 126 123 114 66 Function call interrupts IPI2: 0 0 0 0 Single function call interrupts IPI3: 0 0 0 0 CPU stop interrupts Err: Hanjun Guo (4): clocksource: arch_timer: Use ACPI GTDT table to initialize arch timer ARMv8 / colcksource: use arch_timer_acpi_init() ARMv7 / clocksource: use arch_timer_acpi_init() Foundation model / dts: remove timer node since it is converted to ACPI arch/arm/kernel/time.c | 4 + arch/arm64/boot/dts/foundation-v8-acpi.dts | 6 +- arch/arm64/kernel/time.c | 4 + drivers/clocksource/arm_arch_timer.c | 122 ++++++++++++++++++++++++---- include/clocksource/arm_arch_timer.h | 7 +- 5 files changed, 124 insertions(+), 19 deletions(-) -- 1.7.9.5

11 years, 7 months

2
9
0 0

[PATCH v3 0/4] Convert GIC to ACPI

by Hanjun Guo

This patch set trys to convert GIC to ACPI which based on patches from Amit, I rework them and try to get things simpler. In MADT table, there are GIC cpu interface base address and GIC distributor base address, use them to convert GIC to ACPI. GIC should be converted after all the devices refer to GIC are converted. But this patch set can be safely applied to linaro-acpi git tree if we don't remove the DT node of GIC, the node of GIC can be removed after all the devices converted to ACPI. v2: a) fix missed iounmap() when return in error path; b) add stub for acpi_gic_init(void) when !CONFIG_ACPI C) modify the GSI mapping from DT to ACPI d) remove the hack code and modify the change log a bit v3: a) modify the minor typo for ACPI hwirq mapping "range [16, 31]" b) return -ENODEV when !CONFIG_ACPI in stub function acpi_gic_init(void) c) rebased on the latest linaro-acpi kernel Amit Daniel Kachhap (2): irqdomain: Add a new API irq_create_acpi_mapping() ACPI: ARM: Update acpi_register_gsi to register with the core IRQ subsystem Hanjun Guo (2): irqchip / GIC: do not set default host for GIC domain multi-times when ACPI enabled ARM / GIC: convert GIC to ACPI using the information in MADT arch/arm64/kernel/irq.c | 4 ++ drivers/acpi/plat/arm/boot.c | 98 ++++++++++++++++++++++++++++++++++++------ drivers/irqchip/irq-gic.c | 5 ++- include/linux/acpi.h | 8 ++++ kernel/irq/irqdomain.c | 27 ++++++++++++ 5 files changed, 127 insertions(+), 15 deletions(-) -- 1.7.9.5

11 years, 7 months

3
7
0 0

[PATCH 1/2] acpi: Be sure ACPI structure are packed with 1 byte alignment.

by Tomasz Nowicki

--- tools/common/include/acpi.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/tools/common/include/acpi.h b/tools/common/include/acpi.h index c06bafb..ba8004b 100644 --- a/tools/common/include/acpi.h +++ b/tools/common/include/acpi.h @@ -18,6 +18,8 @@ #define ACPI_OEM_ID_SIZE 6 #define ACPI_OEM_TABLE_ID_SIZE 8 +#pragma pack(1) + /* Generic ACPI table header */ struct acpi_table_header { @@ -295,4 +297,7 @@ struct acpi_whea_header { uint64_t mask; /* Bitmask required for this register instruction */ }; +/* Reset to default packing */ +#pragma pack() + #endif /* ACPI_H_ */ -- 1.7.9.5

11 years, 7 months

3
6
0 0

[PATCH 1/2] ARM/ARM64 : remove HPET related stuff

by Hanjun Guo

HPET is definite not for ARM/ARM64, remove its related stuff. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- drivers/acpi/plat/arm/boot.c | 75 ------------------------------------------ 1 file changed, 75 deletions(-) diff --git a/drivers/acpi/plat/arm/boot.c b/drivers/acpi/plat/arm/boot.c index 3bfe86e..a6c5a5e 100644 --- a/drivers/acpi/plat/arm/boot.c +++ b/drivers/acpi/plat/arm/boot.c @@ -466,79 +466,6 @@ static int __init acpi_parse_sbf(struct acpi_table_header *table) return 0; } -#ifdef CONFIG_HPET_TIMER -#include <asm/hpet.h> - -static struct __initdata resource * hpet_res; - -static int __init acpi_parse_hpet(struct acpi_table_header *table) -{ - struct acpi_table_hpet *hpet_tbl; - - hpet_tbl = (struct acpi_table_hpet *)table; - if (!hpet_tbl) { - printk(KERN_WARNING PREFIX "Unable to map HPET\n"); - return -ENODEV; - } - - if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { - printk(KERN_WARNING PREFIX "HPET timers must be located in " - "memory.\n"); - return -1; - } - - hpet_address = hpet_tbl->address.address; - hpet_blockid = hpet_tbl->sequence; - - /* - * Some broken BIOSes advertise HPET at 0x0. We really do not - * want to allocate a resource there. - */ - if (!hpet_address) { - printk(KERN_WARNING PREFIX - "HPET id: %#x base: %#lx is invalid\n", - hpet_tbl->id, hpet_address); - return 0; - } - printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", - hpet_tbl->id, hpet_address); - - /* - * Allocate and initialize the HPET firmware resource for adding into - * the resource tree during the lateinit timeframe. - */ -#define HPET_RESOURCE_NAME_SIZE 9 - hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); - - hpet_res->name = (void *)&hpet_res[1]; - hpet_res->flags = IORESOURCE_MEM; - snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", - hpet_tbl->sequence); - - hpet_res->start = hpet_address; - hpet_res->end = hpet_address + (1 * 1024) - 1; - - return 0; -} - -/* - * hpet_insert_resource inserts the HPET resources used into the resource - * tree. - */ -static int __init hpet_insert_resource(void) -{ - if (!hpet_res) - return 1; - - return insert_resource(&iomem_resource, hpet_res); -} - -late_initcall(hpet_insert_resource); - -#else -#define acpi_parse_hpet NULL -#endif - /* Local APIC = GIC cpu interface on ARM */ static int __init acpi_parse_madt_lapic_entries(void) { @@ -741,8 +668,6 @@ int __init acpi_boot_init(void) */ acpi_process_madt(); - acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); - return 0; } -- 1.7.9.5

11 years, 7 months

3
3
0 0

[RFC PATCH 0/5] Convert GIC to ACPI

by Hanjun Guo

This patch set trys to convert GIC to ACPI which based on patches from Amit, I rework two patches from him and fix two minor bugs :) In MADT table, there are GIC cpu interface base address and GIC distributor base address, use them to convert GIC to ACPI. GIC should be converted after all the devices refer to GIC are converted. So I hack some code to test this patch set. Amit Daniel Kachhap (2): irqdomain: Add a new API irq_create_acpi_mapping ACPI: ARM: Update acpi_register_gsi to register with the core IRQ subsystem Hanjun Guo (3): irqchip / GIC: do not set default host for GIC domain multi-times when ACPI enabled ARM / GIC: convert GIC to ACPI using the information in MADT ACPI / timer: hack to test GIC in ACPI mode arch/arm64/kernel/irq.c | 4 ++ drivers/acpi/plat/arm/boot.c | 100 +++++++++++++++++++++++++++++----- drivers/clocksource/arm_arch_timer.c | 11 +++- drivers/irqchip/irq-gic.c | 9 ++- include/linux/acpi.h | 3 + kernel/irq/irqdomain.c | 27 +++++++++ 6 files changed, 133 insertions(+), 21 deletions(-) -- 1.7.9.5

11 years, 7 months

3
9
0 0

ACPI standup 2013/11/19

by Tomasz Nowicki

Hi, Here is update from my side: - send out summary of APEI work and RFC regarding next steps, - once we have clear view on this, we will create cards - now implementing cfi-flash driver Regards, Tomasz

11 years, 7 months

1
0
0 0

[PATCH] Foundation model / ASL: fix another interrupt type and level flag error

by Hanjun Guo

As commit 4a52df24 (ARM64 / ASL: Fix interrupt type and level flag for device interrupts) did, this patch fix the same problem. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- platforms/foundation-v8.acpi/dsdt.asl | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/platforms/foundation-v8.acpi/dsdt.asl b/platforms/foundation-v8.acpi/dsdt.asl index ecf25ae..0660dbf 100644 --- a/platforms/foundation-v8.acpi/dsdt.asl +++ b/platforms/foundation-v8.acpi/dsdt.asl @@ -476,7 +476,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate() { Memory32Fixed (ReadWrite, 0x1c090000, 0x1000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x25} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {0x25} }) Return (RBUF) } @@ -490,7 +490,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate() { Memory32Fixed (ReadWrite, 0x1c0a0000, 0x1000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x26} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {0x26} }) Return (RBUF) } @@ -504,7 +504,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate() { Memory32Fixed (ReadWrite, 0x1c0b0000, 0x1000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x27} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {0x27} }) Return (RBUF) } @@ -518,7 +518,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate() { Memory32Fixed (ReadWrite, 0x1c0c0000, 0x1000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x28} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {0x28} }) Return (RBUF) } -- 1.7.9.5

11 years, 7 months

3
2
0 0

[PATCH] RTSM model: Create GTDT table for arch timer

by Hanjun Guo

Create GTDT table to convert arch timer for early boot. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- platforms/rtsm_ve-aemv8a.acpi/gtdt.asl | 37 +++++++++++++++++++++----------- 1 file changed, 24 insertions(+), 13 deletions(-) diff --git a/platforms/rtsm_ve-aemv8a.acpi/gtdt.asl b/platforms/rtsm_ve-aemv8a.acpi/gtdt.asl index 068ad4a..26eac38 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/gtdt.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/gtdt.asl @@ -1,6 +1,7 @@ /* * Copyright (c) 2013, Al Stone <al.stone(a)linaro.org> - * + * Hanjun Guo <hanjun.guo(a)linaro.org> + * * [GTDT] Generic Timer Description Table * Format: [ByteLength] FieldName : HexFieldValue * @@ -21,22 +22,32 @@ [0004] Flags (decoded below) : 00000001 Memory Present : 1 -[0004] Secure PL1 Interrupt : 00000000 -[0004] SPL1 Flags (decoded below) : 00000000 - Trigger Mode : 0 +/* In Foundation model's dts file, the last cell of interrupts + * is 0xff01, it means its cpu mask is FF, and trigger type + * and flag is 1 = low-to-high edge triggered. + * + * so in ACPI the Trigger Mode is 1 - Edge triggered, and + * Polarity is 0 - Active high as ACPI spec describled. + * + * using direct mapping for hwirqs, it means that we using + * ID [16, 31] for PPI, not [0, 15] used in FDT. + */ +[0004] Secure PL1 Interrupt : 0000001d +[0004] SPL1 Flags (decoded below) : 00000001 + Trigger Mode : 1 Polarity : 0 -[0004] Non-Secure PL1 Interrupt : 00000000 -[0004] NSPL1 Flags (decoded below) : 00000000 - Trigger Mode : 0 +[0004] Non-Secure PL1 Interrupt : 0000001e +[0004] NSPL1 Flags (decoded below) : 00000001 + Trigger Mode : 1 Polarity : 0 -[0004] Virtual Timer Interrupt : 00000000 -[0004] VT Flags (decoded below) : 00000000 - Trigger Mode : 0 +[0004] Virtual Timer Interrupt : 0000001b +[0004] VT Flags (decoded below) : 00000001 + Trigger Mode : 1 Polarity : 0 -[0004] Non-Secure PL2 Interrupt : 00000000 -[0004] NSPL2 Flags (decoded below) : 00000000 - Trigger Mode : 0 +[0004] Non-Secure PL2 Interrupt : 0000001a +[0004] NSPL2 Flags (decoded below) : 00000001 + Trigger Mode : 1 Polarity : 0 -- 1.7.9.5

11 years, 7 months

3
4
0 0

Re: [Linaro-acpi] UEFI Clock

by Hanjun Guo

Hi Loc, Grant, >On Thu, 14 Nov 2013 16:01:13 -0800, Loc Ho <lho@xxxxxxx> wrote: >> Hi Mike, >> >> I will be looking into covering the clock driver to support UEFI. >> Before I do this, can someone explain to me how x86 system handle each >> IP clock as I don't see such thing? > >UEFI is completely unrelated to the clock drivers, it is only a firmware >interface for the OS loader. UEFI mostly disappears after Linux is >loaded. Are you perhaps asking about ACPI? > >There isn't such a thing on x86. This is entirely new territory. On x86 >as far as I know any clock manipulation that does need to be done would >be performed by an ACPI method, but there is no concept of an IP clock >in the ACPI namespace, and so no standard way of describing them. Yes, there is no standard way (ACPI device object or ACPI table) to describe clocks for x86 in ACPI spec, but there is a table called GTDT (Generic Timer Description Table) for ARM which contains information for arch timer initialization. you can refer to ACPI spec 5.0 chapter 5.2.24: http://www.acpi.info/spec50.htm > >You'd be much better of talking to Al Stone and Grame Gregory about what >their plans are for clock support in ACPI and to post your question to >the ACPI mailing list. We already finished the implementation of convert fixed clock and arch timer to ACPI, and I had already post the RFC patch set for review now: http://marc.info/?l=linaro-acpi&m=138450991609818&w=2 http://marc.info/?l=linaro-acpi&m=138198249622451&w=2 Thanks Hanjun

11 years, 7 months

2
2
0 0

[PATCH] ACPI: ARM: link ARM and the ACPI reduced hardware profile

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> Modify the kernel configuration so that if ARM is selected, then ACPI_REDUCED_HARDWARE is also selected. Signed-off-by: Al Stone <al.stone(a)linaro.org> --- drivers/acpi/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 099ca81..23522b4 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -5,6 +5,7 @@ config ACPI_ARM bool select EARLY_IOREMAP + select ACPI_REDUCED_HARDWARE menuconfig ACPI bool "ACPI (Advanced Configuration and Power Interface) Support" -- 1.8.3.1

11 years, 7 months

6
10
0 0

[RFC PATCH 0/2] ACPI: Remove fixed clock binding and add uart pl011 platform id

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> Removed the fixed clock binding and add uart pl011 to platform ID table. Tested on v8 logs are as below root@genericarmv8:/sys# find . -name LINA* ./bus/acpi/devices/LINA0003:00 ./bus/acpi/devices/LINA0005:00 ./bus/acpi/devices/LINA0007:00 ./bus/acpi/devices/LINA0008:00 ./bus/acpi/devices/LINA0008:01 ./bus/acpi/devices/LINA0008:02 ./bus/acpi/devices/LINA0009:00 ./bus/acpi/devices/LINA000A:00 ./bus/acpi/devices/LINA000A:01 ./bus/acpi/devices/LINA000A:02 ./bus/acpi/devices/LINA000A:03 ./bus/amba/devices/LINA000A:00 ./bus/amba/devices/LINA000A:01 ./bus/amba/devices/LINA000A:02 ./bus/amba/devices/LINA000A:03 ./bus/amba/drivers/uart-pl011/LINA000A:00 ./bus/amba/drivers/uart-pl011/LINA000A:01 ./bus/amba/drivers/uart-pl011/LINA000A:02 ./bus/amba/drivers/uart-pl011/LINA000A:03 ./bus/platform/devices/LINA0003:00 ./bus/platform/devices/LINA0005:00 ./bus/platform/devices/LINA0007:00 ./bus/platform/devices/LINA0008:00 ./bus/platform/devices/LINA0008:01 ./bus/platform/devices/LINA0008:02 ./bus/platform/devices/LINA0009:00 ./bus/platform/drivers/vexpress-sysreg/LINA0009:00 ./bus/platform/drivers/smc91x/LINA0003:00 ./bus/platform/drivers/fixed-clk/LINA0008:00 ./bus/platform/drivers/fixed-clk/LINA0008:01 ./bus/platform/drivers/fixed-clk/LINA0008:02 ./bus/platform/drivers/arm-pmu/LINA0007:00 ./bus/platform/drivers/virtio-mmio/LINA0005:00 ./devices/platform/LINA0003:00 ./devices/platform/LINA0005:00 ./devices/platform/LINA0007:00 ./devices/platform/LINA0008:00 ./devices/platform/LINA0008:01 ./devices/platform/LINA0008:02 ./devices/platform/LINA0009:00 ./devices/platform/LINA000A:00 ./devices/platform/LINA000A:01 ./devices/platform/LINA000A:02 ./devices/platform/LINA000A:03 ./devices/LNXSYSTM:00/device:00/LINA0007:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:01 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:02 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:03 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0003:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:01 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:02 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/ACPI0004:02/LINA0005:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/ACPI0004:02/LINA0009:00 root@genericarmv8:/sys# Naresh Bhat (2): arm64: dts: remove the fixed clock binding ACPI: Add uart pl011 platform ID arch/arm64/boot/dts/foundation-v8-acpi.dts | 2 +- drivers/acpi/acpi_platform.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) -- 1.7.9.5

11 years, 7 months

3
4
0 0

[RFC Resend PATCH 0/5] Convert the fixed clock to ACPI

by Hanjun Guo

This is the RFC version for converting the fixed clock to ACPI. Since the ACPI namespace is ok at the very late stage of system boot, so I did some major change in boot sequence for the enumeration of fixed clock, amba bus and its child device. I think this part should be review carefully. For DT, it works well for armv8 foudation model after the change in boot sequence, but the UART and amba bus are dependent on the fixed clock, if I only convert the fixed clock to ACPI, UART will not work. So this is the RFC version and the UART will be converted together in next version. Hanjun Guo (5): Driver / clk: add platform driver for fixed clock ACPI / ARM64: Whitelist the ACPI ID for fixed clock ACPI / platform: add some comments for internel registry of _HID names ACPI / fixed-clock: Add ACPI driver for fixed clock Clk / fixed clock: Delay the enumeration of fixed clock and make it popssible for ACPI arch/arm64/kernel/setup.c | 2 +- drivers/acpi/acpi_platform.c | 7 ++-- drivers/clk/clk-fixed-rate.c | 78 +++++++++++++++++++++++++++++++++++++++++- 3 files changed, 82 insertions(+), 5 deletions(-) -- 1.7.9.5

11 years, 7 months

2
7
0 0

[PATCH] ACPI: FDT: clean up unused variable in early_init_dt_scan_acpi

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> Signed-off-by: Al Stone <al.stone(a)linaro.org> --- drivers/of/fdt.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index d1d17e0..6c4c937 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -797,7 +797,6 @@ int __init early_init_dt_scan_acpi(unsigned long node, const char *uname, unsigned long l; unsigned int *p; struct acpi_arm_root *pinfo; - unsigned char *sig; pr_debug("search \"chosen\" for acpi info, depth: %d, uname: %s\n", depth, uname); -- 1.8.3.1

11 years, 7 months

2
1
0 0

[PATCH] ACPI: ARM: stub out acpi_idle_play_dead properly

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> Signed-off-by: Al Stone <al.stone(a)linaro.org> --- drivers/acpi/processor_idle.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 587f3cf..e45f913 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -760,6 +760,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, * @dev: the target CPU * @index: the index of suggested state */ +#ifdef CONFIG_X86 static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) { struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); @@ -767,9 +768,6 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) ACPI_FLUSH_CPU_CACHE(); while (1) { - -#ifdef CONFIG_X86 - /* BOZO: abstract out? */ if (cx->entry_method == ACPI_CSTATE_HALT) safe_halt(); else if (cx->entry_method == ACPI_CSTATE_SYSTEMIO) { @@ -777,13 +775,18 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) /* See comment in acpi_idle_do_entry() */ inl(acpi_gbl_FADT.xpm_timer_block.address); } else -#endif return -ENODEV; } /* Never reached */ return 0; } +#else +static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) +{ + return 0; +} +#endif /** * acpi_idle_enter_simple - enters an ACPI state without BM handling -- 1.8.3.1

11 years, 7 months

3
2
0 0

[PATCH 0/2] Bring in FVP model DTS files

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> Just for convenience sake, bring in the DTS files for the FVP model so they are easier to find and modify. These files are all from ARM github; specifically: https://github.com/ARM-software/arm-trusted-firmware.git Al Stone (2): ACPI: ARM: update DTS for RTSM VE motherboard (from ARM github) ACPI: ARM: add in DTS files for the FVP model (from ARM github) arch/arm64/boot/dts/fvp-base-gicv2-psci.dts | 250 ++++++++++++++++++++ arch/arm64/boot/dts/fvp-base-gicv2legacy-psci.dts | 250 ++++++++++++++++++++ arch/arm64/boot/dts/fvp-base-gicv3-psci.dts | 259 +++++++++++++++++++++ arch/arm64/boot/dts/fvp-foundation-gicv2-psci.dts | 201 ++++++++++++++++ .../boot/dts/fvp-foundation-gicv2legacy-psci.dts | 201 ++++++++++++++++ arch/arm64/boot/dts/fvp-foundation-gicv3-psci.dts | 210 +++++++++++++++++ .../arm64/boot/dts/fvp-foundation-motherboard.dtsi | 197 ++++++++++++++++ arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi | 38 ++- 8 files changed, 1602 insertions(+), 4 deletions(-) create mode 100644 arch/arm64/boot/dts/fvp-base-gicv2-psci.dts create mode 100644 arch/arm64/boot/dts/fvp-base-gicv2legacy-psci.dts create mode 100644 arch/arm64/boot/dts/fvp-base-gicv3-psci.dts create mode 100644 arch/arm64/boot/dts/fvp-foundation-gicv2-psci.dts create mode 100644 arch/arm64/boot/dts/fvp-foundation-gicv2legacy-psci.dts create mode 100644 arch/arm64/boot/dts/fvp-foundation-gicv3-psci.dts create mode 100644 arch/arm64/boot/dts/fvp-foundation-motherboard.dtsi -- 1.8.3.1

11 years, 7 months

2
4
0 0

FVP ASL files

by Al Stone

Just to put it on the record: if you need to add/change/modify ASL in the acpi-asl.git tree for use with the ARM FVP models, the correct platform directory to use is rtsm_ve-aemv8a.acpi. I think everyone probably understands this and is already doing so; I just wanted to make sure it was explicit and recorded. Thanks. -- ciao, al ----------------------------------- Al Stone Software Engineer Linaro Enterprise Group al.stone(a)linaro.org -----------------------------------

11 years, 7 months

2
1
0 0

[PATCH] RTSM model / dts: remove timer node since it is converted to ACPI

by Hanjun Guo

Remove timer node since it is converted to ACPI using GTDT table. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- arch/arm64/boot/dts/rtsm_ve-aemv8a-acpi.dts | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/rtsm_ve-aemv8a-acpi.dts b/arch/arm64/boot/dts/rtsm_ve-aemv8a-acpi.dts index 7f348eb..2649f49 100644 --- a/arch/arm64/boot/dts/rtsm_ve-aemv8a-acpi.dts +++ b/arch/arm64/boot/dts/rtsm_ve-aemv8a-acpi.dts @@ -79,6 +79,9 @@ interrupts = <1 9 0xf04>; }; + /* + * Removed for ACPI + * timer { compatible = "arm,armv8-timer"; interrupts = <1 13 0xff01>, @@ -88,9 +91,6 @@ clock-frequency = <100000000>; }; - /* - * Removed for ACPI - * pmu { compatible = "arm,armv8-pmuv3"; interrupts = <0 60 4>, -- 1.7.9.5

11 years, 7 months

2
1
0 0

[PATCH] Foundation model: Create GTDT table for arch timer

by Hanjun Guo

Create GTDT table to convert arch timer for early boot. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- platforms/foundation-v8.acpi/gtdt.asl | 35 ++++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 12 deletions(-) diff --git a/platforms/foundation-v8.acpi/gtdt.asl b/platforms/foundation-v8.acpi/gtdt.asl index 18c821a..714d61c 100644 --- a/platforms/foundation-v8.acpi/gtdt.asl +++ b/platforms/foundation-v8.acpi/gtdt.asl @@ -1,5 +1,6 @@ /* * Copyright (c) 2013, Al Stone <al.stone(a)linaro.org> + * Hanjun Guo <hanjun.guo(a)linaro.org> * * [GTDT] Generic Timer Description Table * Format: [ByteLength] FieldName : HexFieldValue @@ -21,22 +22,32 @@ [0004] Flags (decoded below) : 00000001 Memory Present : 1 -[0004] Secure PL1 Interrupt : 00000000 -[0004] SPL1 Flags (decoded below) : 00000000 - Trigger Mode : 0 +/* In Foundation model's dts file, the last cell of interrupts + * is 0xff01, it means its cpu mask is FF, and trigger type + * and flag is 1 = low-to-high edge triggered. + * + * so in ACPI the Trigger Mode is 1 - Edge triggered, and + * Polarity is 0 - Active high as ACPI spec describled. + * + * using direct mapping for hwirqs, it means that we using + * ID [16, 31] for PPI, not [0, 15] used in FDT. + */ +[0004] Secure PL1 Interrupt : 0000001d +[0004] SPL1 Flags (decoded below) : 00000001 + Trigger Mode : 1 Polarity : 0 -[0004] Non-Secure PL1 Interrupt : 00000000 -[0004] NSPL1 Flags (decoded below) : 00000000 - Trigger Mode : 0 +[0004] Non-Secure PL1 Interrupt : 0000001e +[0004] NSPL1 Flags (decoded below) : 00000001 + Trigger Mode : 1 Polarity : 0 -[0004] Virtual Timer Interrupt : 00000000 -[0004] VT Flags (decoded below) : 00000000 - Trigger Mode : 0 +[0004] Virtual Timer Interrupt : 0000001b +[0004] VT Flags (decoded below) : 00000001 + Trigger Mode : 1 Polarity : 0 -[0004] Non-Secure PL2 Interrupt : 00000000 -[0004] NSPL2 Flags (decoded below) : 00000000 - Trigger Mode : 0 +[0004] Non-Secure PL2 Interrupt : 0000001a +[0004] NSPL2 Flags (decoded below) : 00000001 + Trigger Mode : 1 Polarity : 0 -- 1.7.9.5

11 years, 7 months

2
1
0 0

[PATCH] ARM: ACPI: remove the global lock, arm is reduced hw

by Graeme Gregory

Remove the global lock handling as this is not needed for the reduced hardware platform that arm/arm64 is currently defined as. Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- drivers/acpi/plat/arm/boot.c | 24 ------------------------ 1 file changed, 24 deletions(-) diff --git a/drivers/acpi/plat/arm/boot.c b/drivers/acpi/plat/arm/boot.c index 1a6d225..3bfe86e 100644 --- a/drivers/acpi/plat/arm/boot.c +++ b/drivers/acpi/plat/arm/boot.c @@ -785,27 +785,3 @@ static int __init parse_acpi(char *arg) return 0; } early_param("acpi", parse_acpi); - -#if (!ACPI_REDUCED_HARDWARE) -int __acpi_acquire_global_lock(unsigned int *lock) -{ - unsigned int old, new, val; - do { - old = *lock; - new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); - val = cmpxchg(lock, old, new); - } while (unlikely (val != old)); - return (new < 3) ? -1 : 0; -} - -int __acpi_release_global_lock(unsigned int *lock) -{ - unsigned int old, new, val; - do { - old = *lock; - new = old & ~0x3; - val = cmpxchg(lock, old, new); - } while (unlikely (val != old)); - return old & 0x1; -} -#endif -- 1.8.3.1

11 years, 7 months

2
1
0 0

[PATCH V2 0/4] Convert GIC to ACPI

by Hanjun Guo

This patch set trys to convert GIC to ACPI which based on patches from Amit, I rework them and try to get things simpler. In MADT table, there are GIC cpu interface base address and GIC distributor base address, use them to convert GIC to ACPI. GIC should be converted after all the devices refer to GIC are converted. But this patch set can be safely applied to linaro-acpi git tree if we don't remove the DT node of GIC, the node of GIC can be removed after all the devices converted to ACPI. v2: a) fix missed iounmap() when return in error path; b) add stab for acpi_gic_init(void) when !CONFIG_ACPI C) modify the GSI mapping from DT to ACPI d) remove the hack code and modify the change log a bit Amit Daniel Kachhap (2): irqdomain: Add a new API irq_create_acpi_mapping() ACPI: ARM: Update acpi_register_gsi to register with the core IRQ subsystem Hanjun Guo (2): irqchip / GIC: do not set default host for GIC domain multi-times when ACPI enabled ARM / GIC: convert GIC to ACPI using the information in MADT arch/arm64/kernel/irq.c | 4 ++ drivers/acpi/plat/arm/boot.c | 98 ++++++++++++++++++++++++++++++++++++------ drivers/irqchip/irq-gic.c | 5 ++- include/linux/acpi.h | 8 ++++ kernel/irq/irqdomain.c | 27 ++++++++++++ 5 files changed, 127 insertions(+), 15 deletions(-) -- 1.7.9.5

11 years, 7 months

1
4
0 0

[PATCH 1/1] apei, hest: Wrap all MCE code inside #ifdef CONFIG_X86_MCE to enable platform other than x86.

by Tomasz Nowicki

Fix compilation error: drivers/acpi/apei/hest.c: In function ‘acpi_hest_init’: drivers/acpi/apei/hest.c:268:7: error: ‘acpi_disable_cmcff’ undeclared (first use in this function) drivers/acpi/apei/hest.c:268:7: note: each undeclared identifier is reported only once for each function it appears in make[3]: *** [drivers/acpi/apei/hest.o] Error 1 MCE is X86 platform specific and should be consider only if MCE is configured. --- drivers/acpi/apei/hest.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index f5e37f3..6d06cce 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -36,7 +36,9 @@ #include <linux/io.h> #include <linux/platform_device.h> #include <acpi/apei.h> +#ifdef CONFIG_X86_MCE #include <asm/mce.h> +#endif #include "apei-internal.h" @@ -126,9 +128,9 @@ EXPORT_SYMBOL_GPL(apei_hest_parse); * Check if firmware advertises firmware first mode. We need FF bit to be set * along with a set of MC banks which work in FF mode. */ +#ifdef CONFIG_X86_MCE static int __init hest_parse_cmc(struct acpi_hest_header *hest_hdr, void *data) { -#ifdef CONFIG_X86_MCE int i; struct acpi_hest_ia_corrected *cmc; struct acpi_hest_ia_error_bank *mc_bank; @@ -153,9 +155,10 @@ static int __init hest_parse_cmc(struct acpi_hest_header *hest_hdr, void *data) mc_bank = (struct acpi_hest_ia_error_bank *)(cmc + 1); for (i = 0; i < cmc->num_hardware_banks; i++, mc_bank++) mce_disable_bank(mc_bank->bank_number); -#endif + return 1; } +#endif struct ghes_arr { struct platform_device **ghes_devs; @@ -263,8 +266,10 @@ void __init acpi_hest_init(void) goto err; } +#ifdef CONFIG_X86_MCE if (!acpi_disable_cmcff) apei_hest_parse(hest_parse_cmc, NULL); +#endif if (!ghes_disable) { rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count); -- 1.7.9.5

11 years, 7 months

2
1
0 0

[RFC PATCH] ACPI/ASL: Add clk changes to foundation v8 dsdt asl

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> While testing Brandon Anderson patches on foundation v8 model, the model use to hang while booting, because UART is unable to find the clock source. ... ..... ACPI: No dock devices found. acpi_amba_add_device(): amba_device_add() failed (-2) for LINA000A:00 acpi_amba_add_device(): amba_device_add() failed (-2) for LINA000A:01 acpi_amba_add_device(): amba_device_add() failed (-2) for LINA000A:02 acpi_amba_add_device(): amba_device_add() failed (-2) for LINA000A:03 ... .... This patch issued to fix the same issue under foundation v8 platform dsdt asl file. Naresh Bhat (1): foundation-v8: Add clk changes platforms/foundation-v8.acpi/dsdt.asl | 47 +++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) -- 1.7.9.5

11 years, 7 months

2
2
0 0

[PATCH v2] ARM64 / ASL: Fix interrupt type and level flag for device interrupts

by Hanjun Guo

For gic bindings, The 3rd cell of interrupts is the flags,encoded as follows: bits[3:0] trigger type and level flags. 1 = low-to-high edge triggered 2 = high-to-low edge triggered 4 = active high level-sensitive 8 = active low level-sensitive bits[15:8] PPI interrupt cpu mask. Please refer to Documentation/devicetree/bindings/arm/gic.txt for detailed information. In Foundation model and RTSM model's device tree, the 3rd cell of interrupts of all devices is 4, so we should use active high level-sensitive in the DSDT table too when we convert the device to ACPI. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- platforms/foundation-v8.acpi/dsdt.asl | 6 +++--- platforms/rtsm_ve-aemv8a.acpi/dsdt.asl | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/platforms/foundation-v8.acpi/dsdt.asl b/platforms/foundation-v8.acpi/dsdt.asl index 39b4886..8d4657c 100644 --- a/platforms/foundation-v8.acpi/dsdt.asl +++ b/platforms/foundation-v8.acpi/dsdt.asl @@ -247,7 +247,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1a000000, 0x00010000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x2F} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {0x2F} }) Return (RBUF) } @@ -260,7 +260,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate() { Memory32Fixed (ReadWrite, 0x1c130000, 0x1000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x4A} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {0x4A} }) Return (RBUF) } @@ -272,7 +272,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {92, 93, 94, 95} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {92, 93, 94, 95} }) Return (RBUF) } diff --git a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl index 0bcc94d..1d51323 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl @@ -246,7 +246,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1a000000, 0x00010000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x2F} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {0x2F} }) Return (RBUF) } @@ -258,7 +258,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {92, 93, 94, 95} + Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, , , ) {92, 93, 94, 95} }) Return (RBUF) } -- 1.7.9.5

11 years, 7 months

2
2
0 0

[PATCH 00/10] Change ACPI ASL licenses to BSD

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> In order to make the ASL files that have been created more usable to a wider audience, we found it necessary to change the distribution license from GPLv2 to the less restrictive BSD 2-clause license. This patch series changes all of the files to reflect the new licensing. Al Stone (10): Add in LICENSE file (BSD 2-clause, specifically) Change the cab tool to the BSD license. Convert the mab project to a BSD license. Convert all tool common files to BSD license. Convert the bfapei tool to the BSD license. Convert overall Makefiles to BSD license. Convert the loadtest.acpi files to a BSD license. Convert ASL for Arndale to BSD license. Convert ASL for Foundation model to BSD license. Convert ASL for RTSM to BSD license. LICENSE | 30 +++++++++++++++++ Makefile | 31 +++++++++++++++++ platforms/Makefile | 31 +++++++++++++++++ platforms/exynos5250-arndale.acpi/apic.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/asf!.asl | 37 ++++++++++++++++---- platforms/exynos5250-arndale.acpi/bert.asl | 30 ++++++++++++++++- platforms/exynos5250-arndale.acpi/bgrt.asl | 39 ++++++++++++++++++---- platforms/exynos5250-arndale.acpi/boot.asl | 39 ++++++++++++++++++---- platforms/exynos5250-arndale.acpi/cpep.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/csrt.asl | 39 ++++++++++++++++++---- platforms/exynos5250-arndale.acpi/dsdt.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/ecdt.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/einj.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/erst.asl | 29 +++++++++++++++- .../exynos5250-arndale.manifest | 29 ++++++++++++++++ platforms/exynos5250-arndale.acpi/facp.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/facs.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/fpdt.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/gtdt.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/hest.asl | 31 +++++++++++++++-- platforms/exynos5250-arndale.acpi/mcfg.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/mchi.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/mpst.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/msct.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/oem0.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/pmtt.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/rsdp.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/slit.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/spmi.asl | 31 +++++++++++++++-- platforms/exynos5250-arndale.acpi/srat.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/ssdt0.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/uefi.asl | 29 +++++++++++++++- platforms/exynos5250-arndale.acpi/xsdt.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/apic.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/bert.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/bgrt.asl | 36 +++++++++++++++++--- platforms/foundation-v8.acpi/boot.asl | 37 +++++++++++++++++--- platforms/foundation-v8.acpi/cpep.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/csrt.asl | 37 +++++++++++++++++--- platforms/foundation-v8.acpi/dsdt.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/ecdt.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/einj.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/erst.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/facp.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/facs.asl | 29 +++++++++++++++- .../foundation-v8.acpi/foundation-v8.manifest | 30 +++++++++++++++++ platforms/foundation-v8.acpi/fpdt.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/gtdt.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/hest.asl | 31 +++++++++++++++-- platforms/foundation-v8.acpi/mcfg.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/mchi.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/mpst.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/msct.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/oem0.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/pmtt.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/rsdp.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/slit.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/spmi.asl | 31 +++++++++++++++-- platforms/foundation-v8.acpi/srat.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/ssdt0.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/uefi.asl | 29 +++++++++++++++- platforms/foundation-v8.acpi/xsdt.asl | 29 +++++++++++++++- platforms/loadtest.acpi/dsdt.asl | 28 +++++++++++++++- platforms/loadtest.acpi/facp.asl | 29 +++++++++++++++- platforms/loadtest.acpi/facs.asl | 29 +++++++++++++++- platforms/loadtest.acpi/loadtest.manifest | 30 +++++++++++++++++ platforms/loadtest.acpi/rsdp.asl | 29 +++++++++++++++- platforms/loadtest.acpi/xsdt.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/apic.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/bert.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/cpep.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/dsdt.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/ecdt.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/einj.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/erst.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/facp.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/facs.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/fpdt.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/gtdt.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/hest.asl | 31 +++++++++++++++-- platforms/rtsm_ve-aemv8a.acpi/mcfg.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/mchi.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/mpst.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/msct.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/oem0.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/pmtt.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/rsdp.asl | 29 +++++++++++++++- .../rtsm_ve-aemv8a.acpi/rtsm_ve-aemv8a.manifest | 30 +++++++++++++++++ platforms/rtsm_ve-aemv8a.acpi/slit.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/spmi.asl | 31 +++++++++++++++-- platforms/rtsm_ve-aemv8a.acpi/srat.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/ssdt0.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/uefi.asl | 29 +++++++++++++++- platforms/rtsm_ve-aemv8a.acpi/xsdt.asl | 29 +++++++++++++++- tools/bfapei/Makefile | 31 +++++++++++++++++ tools/bfapei/bfapei.c | 32 +++++++++++++++--- tools/bfapei/bfapei.h | 32 +++++++++++++++--- tools/cab/Makefile | 31 +++++++++++++++++ tools/cab/cab.c | 31 ++++++++++++++--- tools/cab/cab.h | 31 ++++++++++++++--- tools/common/Makefile | 31 +++++++++++++++++ tools/common/build_aml.c | 32 +++++++++++++++--- tools/common/check_aml.c | 32 +++++++++++++++--- tools/common/include/acpi.h | 32 +++++++++++++++--- tools/common/include/build_aml.h | 32 +++++++++++++++--- tools/common/include/check_aml.h | 32 +++++++++++++++--- tools/mab/Changelog | 3 ++ tools/mab/Makefile | 31 +++++++++++++++++ tools/mab/mab.c | 32 +++++++++++++++--- tools/mab/mab.h | 32 +++++++++++++++--- 110 files changed, 3115 insertions(+), 169 deletions(-) create mode 100644 LICENSE -- 1.8.3.1

11 years, 7 months

2
11
0 0

[PATCH 0/2] Cleanup unusable/unneeded ASL files

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> The Arndale and Foundation model ASL files included a bunch of template files that will either (a) never be used since they are x86 specific, or (b) are highly unlikely to ever be needed (e.g., the TPM2 table). Even if they ever do become needed, templates can easily be regenerated using the ACPICA iasl tool. So, remove these ASL files to introduce a little more clarity. Al Stone (2): Remove all Arndale ASL files that should never be used. Remove all Foundation model ASL files that should never be used. platforms/exynos5250-arndale.acpi/dbgp.asl | 29 ---------- platforms/exynos5250-arndale.acpi/dmar.asl | 68 ----------------------- platforms/exynos5250-arndale.acpi/hpet.asl | 33 ------------ platforms/exynos5250-arndale.acpi/ivrs.asl | 86 ------------------------------ platforms/exynos5250-arndale.acpi/s3pt.asl | 26 --------- platforms/exynos5250-arndale.acpi/sbst.asl | 22 -------- platforms/exynos5250-arndale.acpi/slic.asl | 56 ------------------- platforms/exynos5250-arndale.acpi/spcr.asl | 46 ---------------- platforms/exynos5250-arndale.acpi/tcpa.asl | 22 -------- platforms/exynos5250-arndale.acpi/tpm2.asl | 22 -------- platforms/exynos5250-arndale.acpi/waet.asl | 22 -------- platforms/exynos5250-arndale.acpi/wdat.asl | 47 ---------------- platforms/exynos5250-arndale.acpi/wddt.asl | 44 --------------- platforms/exynos5250-arndale.acpi/wdrt.asl | 42 --------------- platforms/foundation-v8.acpi/dbgp.asl | 29 ---------- platforms/foundation-v8.acpi/dmar.asl | 68 ----------------------- platforms/foundation-v8.acpi/hpet.asl | 33 ------------ platforms/foundation-v8.acpi/ivrs.asl | 86 ------------------------------ platforms/foundation-v8.acpi/s3pt.asl | 26 --------- platforms/foundation-v8.acpi/sbst.asl | 22 -------- platforms/foundation-v8.acpi/slic.asl | 56 ------------------- platforms/foundation-v8.acpi/spcr.asl | 46 ---------------- platforms/foundation-v8.acpi/tcpa.asl | 22 -------- platforms/foundation-v8.acpi/tpm2.asl | 22 -------- platforms/foundation-v8.acpi/waet.asl | 22 -------- platforms/foundation-v8.acpi/wdat.asl | 47 ---------------- platforms/foundation-v8.acpi/wddt.asl | 44 --------------- platforms/foundation-v8.acpi/wdrt.asl | 42 --------------- 28 files changed, 1130 deletions(-) delete mode 100644 platforms/exynos5250-arndale.acpi/dbgp.asl delete mode 100644 platforms/exynos5250-arndale.acpi/dmar.asl delete mode 100644 platforms/exynos5250-arndale.acpi/hpet.asl delete mode 100644 platforms/exynos5250-arndale.acpi/ivrs.asl delete mode 100644 platforms/exynos5250-arndale.acpi/s3pt.asl delete mode 100644 platforms/exynos5250-arndale.acpi/sbst.asl delete mode 100644 platforms/exynos5250-arndale.acpi/slic.asl delete mode 100644 platforms/exynos5250-arndale.acpi/spcr.asl delete mode 100644 platforms/exynos5250-arndale.acpi/tcpa.asl delete mode 100644 platforms/exynos5250-arndale.acpi/tpm2.asl delete mode 100644 platforms/exynos5250-arndale.acpi/waet.asl delete mode 100644 platforms/exynos5250-arndale.acpi/wdat.asl delete mode 100644 platforms/exynos5250-arndale.acpi/wddt.asl delete mode 100644 platforms/exynos5250-arndale.acpi/wdrt.asl delete mode 100644 platforms/foundation-v8.acpi/dbgp.asl delete mode 100644 platforms/foundation-v8.acpi/dmar.asl delete mode 100644 platforms/foundation-v8.acpi/hpet.asl delete mode 100644 platforms/foundation-v8.acpi/ivrs.asl delete mode 100644 platforms/foundation-v8.acpi/s3pt.asl delete mode 100644 platforms/foundation-v8.acpi/sbst.asl delete mode 100644 platforms/foundation-v8.acpi/slic.asl delete mode 100644 platforms/foundation-v8.acpi/spcr.asl delete mode 100644 platforms/foundation-v8.acpi/tcpa.asl delete mode 100644 platforms/foundation-v8.acpi/tpm2.asl delete mode 100644 platforms/foundation-v8.acpi/waet.asl delete mode 100644 platforms/foundation-v8.acpi/wdat.asl delete mode 100644 platforms/foundation-v8.acpi/wddt.asl delete mode 100644 platforms/foundation-v8.acpi/wdrt.asl -- 1.8.3.1

11 years, 7 months

2
3
0 0

[PATCH] Foundation model / ASL: Fix level flags for device interrupts

by Hanjun Guo

For gic bindings, The 3rd cell of interrupts is the flags, encoded as follows: bits[3:0] trigger type and level flags. 1 = low-to-high edge triggered 2 = high-to-low edge triggered 4 = active high level-sensitive 8 = active low level-sensitive bits[15:8] PPI interrupt cpu mask. In Foundation model and RTSM model's device tree, the 3rd cell of interrupts of all devices is 4, so we should use active high level-sensitive in the DSDT table too when we convert the device to ACPI. Signed-off-by: Hanjun Guo <hanjun.guo(a)linaro.org> --- platforms/foundation-v8.acpi/dsdt.asl | 6 +++--- platforms/rtsm_ve-aemv8a.acpi/dsdt.asl | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/platforms/foundation-v8.acpi/dsdt.asl b/platforms/foundation-v8.acpi/dsdt.asl index 39b4886..d278c32 100644 --- a/platforms/foundation-v8.acpi/dsdt.asl +++ b/platforms/foundation-v8.acpi/dsdt.asl @@ -247,7 +247,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1a000000, 0x00010000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x2F} + Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, , , ) {0x2F} }) Return (RBUF) } @@ -260,7 +260,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate() { Memory32Fixed (ReadWrite, 0x1c130000, 0x1000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x4A} + Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, , , ) {0x4A} }) Return (RBUF) } @@ -272,7 +272,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {92, 93, 94, 95} + Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, , , ) {92, 93, 94, 95} }) Return (RBUF) } diff --git a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl index 0bcc94d..a736653 100644 --- a/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl +++ b/platforms/rtsm_ve-aemv8a.acpi/dsdt.asl @@ -246,7 +246,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1a000000, 0x00010000) - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {0x2F} + Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, , , ) {0x2F} }) Return (RBUF) } @@ -258,7 +258,7 @@ DefinitionBlock ( Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { - Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {92, 93, 94, 95} + Interrupt (ResourceConsumer, Edge, ActiveHigh, Exclusive, , , ) {92, 93, 94, 95} }) Return (RBUF) } -- 1.7.9.5

11 years, 7 months

1
1
0 0

[PATCH v3 00/13] Hardware Reduced Mode cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These are being submitted as an RFC to the linaro-acpi@ list so I can get some other eyes looking at them before sending them to linux-acpi@ where they really need to go. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled. However, there's no way I can think of or test all possible scenarios so feedback would be greatly appreciated. NB: these changes are only applicable to the LEG ACPI working tree. The macros in patch 1/13 will have to change for the linux-acpi tree. Changes for v3: -- Consistent use of #if (!ACPI_REDUCED_HARDWARE) -- Use of ACPI_HW_DEPENDENT_RETURN_{*} macros -- Simplify wherever possible Changes for v2: -- Change patch series title -- Add in the FACS global lock patch as further hardware reduced mode cleanup that is needed -- Remove whitespace change that should not have gotten in [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… Al Stone (13): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE to enable this ACPI mode ACPI: bus master reload not supported in reduced HW mode ACPI: clean up compiler warning about uninitialized field ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: ARM: exclude calls on ARM platforms, not include them on x86 ACPI: ensure several FADT fields are only used in HW reduced mode ACPI: do not reserve memory regions for some FADT entries in HW reduced mode ACPI: in HW reduced mode, getting power latencies from FADT is not allowed ACPI: add clarifying comment about processor throttling in HW reduced mode ACPI: ACPI_FADT_C2_MP_SUPPORTED must be ignored in HW reduced mode ACPI: use of ACPI_FADT_32BIT_TIMER is not allowed in HW reduced mode ACPI: correct #ifdef so compilation without ACPI_REDUCED_HARDWARE works ACPI: ARM/ARM64: ensure the ACPI FACS global_lock is never used in HW reduced mode arch/arm/include/asm/acpi.h | 3 ++- arch/arm64/include/asm/acpi.h | 3 ++- drivers/acpi/Kconfig | 8 ++++++++ drivers/acpi/acpica/utxface.c | 3 ++- drivers/acpi/bus.c | 7 ++++--- drivers/acpi/osl.c | 28 ++++++++++++++++++++-------- drivers/acpi/pci_link.c | 14 ++++++++------ drivers/acpi/plat/arm/boot.c | 2 ++ drivers/acpi/processor_idle.c | 19 ++++++++++++------- drivers/acpi/processor_throttling.c | 8 ++++++++ drivers/acpi/sleep.c | 2 +- include/acpi/acconfig.h | 2 +- include/acpi/acpixf.h | 6 ++++++ include/acpi/platform/aclinux.h | 6 ++++++ 14 files changed, 82 insertions(+), 29 deletions(-) -- 1.8.3.1

11 years, 7 months

2
16
0 0

[RFC PATCH 00/13 v2] Hardware Reduced Mode cleanup for ACPI

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These are being submitted as an RFC to the linaro-acpi@ list so I can get some other eyes looking at them before sending them to linux-acpi@ where they really need to go. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled. However, there's no way I can think of or test all possible scenarios so feedback would be greatly appreciated. Changes for v2: -- Change patch series title -- Add in the FACS global lock patch as further hardware reduced mode cleanup that is needed -- Remove whitespace change that should not have gotten in [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… Al Stone (13): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE to enable this ACPI mode ACPI: bus master reload is unsupported in ACPI reduced HW mode ACPI: clean up compiler warning about uninitialized field ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: ARM: exclude calls on ARM platforms, not include them on x86 ACPI: ensure several FADT fields are only used in HW reduced mode ACPI: do not reserve memory regions for some FADT entries in HW reduced mode ACPI: in HW reduced mode, getting power latencies from FADT is not allowed ACPI: add clarifying comment about processor throttling in HW reduced mode ACPI: ACPI_FADT_C2_MP_SUPPORTED must be ignored in HW reduced mode ACPI: use of ACPI_FADT_32BIT_TIMER is not allowed in HW reduced mode ACPI: correct #ifdefs so compiling without ACPI_REDUCED_HARDWARE works properly ACPI: ARM/ARM64: ensure the ACPI FACS global_lock is never used in HW reduced mode arch/arm/include/asm/acpi.h | 3 ++- arch/arm64/include/asm/acpi.h | 3 ++- drivers/acpi/Kconfig | 8 ++++++++ drivers/acpi/acpica/utxface.c | 3 ++- drivers/acpi/bus.c | 9 +++++---- drivers/acpi/osl.c | 28 ++++++++++++++++++++-------- drivers/acpi/pci_link.c | 14 ++++++++------ drivers/acpi/plat/arm/boot.c | 2 ++ drivers/acpi/processor_idle.c | 29 ++++++++++++++++++++++++----- drivers/acpi/processor_throttling.c | 8 ++++++++ drivers/acpi/sleep.c | 2 +- include/acpi/acconfig.h | 2 +- include/acpi/platform/aclinux.h | 6 ++++++ 13 files changed, 89 insertions(+), 28 deletions(-) -- 1.8.3.1

11 years, 7 months

4
30
0 0

Re: [Linaro-acpi] [PATCH 17/20] ACPICA: Simplify configuration of global ACPI_REDUCED_HARDWARE macro.

by Hanjun Guo

On 29 October 2013 09:30, Lv Zheng <lv.zheng(a)intel.com> wrote: > From: Bob Moore <robert.moore(a)intel.com> > > Surround definition of this with a #ifndef so that the kernel > can define it elsewhere if desired. > > Signed-off-by: Bob Moore <robert.moore(a)intel.com> > Signed-off-by: Lv Zheng <lv.zheng(a)intel.com> > Reviewed-by: Hanjun Guo <hanjun.guo(a)linaro.org> > --- > include/acpi/acconfig.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h > index 1c16f82..d98c670 100644 > --- a/include/acpi/acconfig.h > +++ b/include/acpi/acconfig.h > @@ -100,7 +100,9 @@ > * ACPI PM timer > * FACS table (Waking vectors and Global Lock) > */ > +#ifndef ACPI_REDUCED_HARDWARE > #define ACPI_REDUCED_HARDWARE FALSE > +#endif > > > /****************************************************************************** > * > -- > 1.7.10 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo(a)vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >

11 years, 8 months

1
0
0 0

[RFC PATCH 0/3] ACPI: ARM AMBA bus connector resource

by brandon.anderson＠amd.com

From: Brandon Anderson <brandon.anderson(a)amd.com> This is a proposal for ACPI driver probing of the ARM AMBA devices currently listed under ‘iofpga’ in the RTSM dts file. The main addition is drivers/amba/acpi.c which fits the role of an AMBA bus ‘connector resource’ for ACPI using struct amba_device. I have not yet figured out the implementation details regarding clocks (handled in the dts file with clock-names). However, I have included a proposed ASL format for clock information in the DSDT example below. With the last patch that hacks the clock info, this prototype will run on the Foundation and RTSM models. These patches require Hanjun’s fixed-clock patches to be applied first on top of a Linaro ACPI kernel: https://git.linaro.org/gitweb?p=arm/acpi/leg-kernel.git;a=summary Please comment on both the concept and the implementation. Brandon Anderson (3): Remove UART and KMI entries from DTS file Prototype of AMBA bus 'connector resource' for ACPI Hack clock names to get prototype running arch/arm64/boot/dts/foundation-v8-acpi.dts | 10 +- arch/arm64/boot/dts/rtsm_ve-aemv8a-acpi.dts | 4 + arch/arm64/boot/dts/rtsm_ve-motherboard-acpi.dtsi | 4 + drivers/acpi/acpi_platform.c | 2 + drivers/amba/Makefile | 2 +- drivers/amba/acpi.c | 172 +++++++++++++++++++++ drivers/clk/clk-fixed-rate.c | 15 +- 7 files changed, 203 insertions(+), 6 deletions(-) create mode 100644 drivers/amba/acpi.c -- 1.7.9.5 --- Device (AMBA) { Name (_HID, "AMBA0000") /* the parallel to "arm,primecell" in DTS */ Name (_UID, 0) /* Define 'apb_pclk' as a default clock source since it is common with devices below */ Method(_DSM, 4, NotSerialized) { Store (Package (3) { "clock-name", "apb_pclk", "\\_SB_.CLK0", }, Local0) Return (Local0) } Device (KMI0) { Name (_ADR,0x1c060000) Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1c060000, 0x00010000) Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {44} }) Return (RBUF) } } Device (KMI1) { Name (_ADR,0x1c070000) Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1c070000, 0x00010000) Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {45} }) Return (RBUF) } } Device (SER0) { Name (_ADR,0x1c090000) // UART0 Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1c090000, 0x00010000) Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {37} }) Return (RBUF) } } Device (SER1) { Name (_ADR,0x1c0a0000) // UART1 Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1c0a0000, 0x00010000) Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {38} }) Return (RBUF) } } Device (SER2) { Name (_ADR,0x1c0b0000) // UART2 Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1c0b0000, 0x00010000) Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {39} }) Return (RBUF) } } Device (SER3) { Name (_ADR,0x1c0c0000) // UART3 Method (_CRS, 0x0, Serialized) { Name (RBUF, ResourceTemplate () { Memory32Fixed (ReadWrite, 0x1c0c0000, 0x00010000) Interrupt (ResourceConsumer, Edge, ActiveBoth, Exclusive, , , ) {40} }) Return (RBUF) } } }

11 years, 8 months

5
20
0 0

[PATCH] ACPI: ARM: define acpi_suspend_lowlevel() properly to eliminate compiler warning

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> This function was not defined as a pointer to a function but as a function. This resulted in a "test is always true" warning in drivers/acpi/sleep.c where it tested for the existence of the function. Signed-off-by: Al Stone <al.stone(a)linaro.org> --- arch/arm/include/asm/acpi.h | 2 +- arch/arm64/include/asm/acpi.h | 2 +- drivers/acpi/plat/arm/sleep.c | 11 +++++++++-- 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/arm/include/asm/acpi.h b/arch/arm/include/asm/acpi.h index ca7efaa..31f21fd 100644 --- a/arch/arm/include/asm/acpi.h +++ b/arch/arm/include/asm/acpi.h @@ -115,7 +115,7 @@ extern struct acpi_arm_root acpi_arm_rsdp_info; void arm_acpi_reserve_memory(void); /* Low-level suspend routine. */ -extern int acpi_suspend_lowlevel(void); +extern int (*acpi_suspend_lowlevel)(void); extern void prefill_possible_map(void); diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index a19b73f..aee7190 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -93,7 +93,7 @@ extern struct acpi_arm_root acpi_arm_rsdp_info; void arm_acpi_reserve_memory(void); /* Low-level suspend routine. */ -extern int acpi_suspend_lowlevel(void); +extern int (*acpi_suspend_lowlevel)(void); extern void prefill_possible_map(void); diff --git a/drivers/acpi/plat/arm/sleep.c b/drivers/acpi/plat/arm/sleep.c index 9129c7e..ac5e343 100644 --- a/drivers/acpi/plat/arm/sleep.c +++ b/drivers/acpi/plat/arm/sleep.c @@ -1,15 +1,22 @@ /* - * sleep.c - x86-specific ACPI sleep support. + * sleep.c - ARM-specific ACPI sleep support. * * Copyright (C) 2001-2003 Patrick Mochel * Copyright (C) 2001-2003 Pavel Machek <pavel(a)ucw.cz> */ +#ifdef CONFIG_ACPI_SLEEP int acpi_suspend_lowlevel(void) { - /* BOZO: dummy routine; see below for actual */ + /* + * TODO: connect this function to PSCI when it becomes available, + * and if actually needed. + */ return 0; } +#else +int acpi_suspend_lowlevel(void); +#endif #ifdef CONFIG_X86 /* BOZO: disable everything for now... */ -- 1.8.3.1

11 years, 8 months

1
0
0 0

Fwd: Re: APEI question

by Tomasz Nowicki

Hi, This is interesting answer to my question so I am shearing it with you. Tomasz -------- Original Message -------- Subject: Re: APEI question Date: Thu, 24 Oct 2013 02:38:26 -0400 From: Chen, Gong <gong.chen(a)linux.intel.com> To: Tomasz Nowicki <tn(a)semihalf.com> On Wed, Oct 23, 2013 at 11:16:13AM +0200, Tomasz Nowicki wrote: > Date: Wed, 23 Oct 2013 11:16:13 +0200 > From: Tomasz Nowicki <tn(a)semihalf.com> > To: chen gong <Chen(a)gchen.bj.intel.com> > CC: gong.chen(a)linux.intel.com > Subject: Re: APEI question > User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 > Thunderbird/24.0 > > Let me put this in the different way. > > ghes_do_proc() process errors which are reported via APEI. It > handles with CPER_SEC_PLATFORM_MEM and CPER_SEC_PCIE error types. I > wander why this function is not taking care of > CPER_SEC_PROC_GENERIC. > Yes, the spec has covered all kinds of situations but the reality is cruel. Even FFM is enabled, not all errors can be covered by firmware. Based on the fact, only memory/IO CE and IO UC errors can be handled well by firmware by now. For processer errors, as a fact, I never saw so-called CE errors, only UC, even fatal error. As a result, you will get a MCE. You can consider that firmware just *bypass* this kind of error. In some way, that's why eMCA happens as a successor. That's all. Otherwise I will cross the red line ;-).

11 years, 8 months

2
1
0 0

[RFC PATCH 00/12] Hardware Reduced Mode Cleanup for FADT fields

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> This series of patches starts with Hanjun's patch to create a kernel config item for CONFIG_ACPI_REDUCED_HARDWARE [0]. Building on that, I then reviewed all of the code that touched any of several fields in the FADT that the OSPM is supposed to ignore when ACPI is in Hardware Reduced mode [1]. Any time there was a use of one of the fields to be ignored, I evaluated whether or not the code was implementing Hardware Reduced mode correctly. Similarly, for each the flags in the FADT flags field that are to be ignored in Hardware Reduced mode, the kernel code was again scanned for proper usage. The remainder of the patches are to fix all of the situations I could find where the kernel would not behave correctly in this ACPI mode. These are being submitted as an RFC to the linaro-acpi@ list so I can get some other eyes looking at them before sending them to linux-acpi@ where they really need to go. These seem to work just fine on the RTSM model for ARMv7, both with and without ACPI enabled, and with and without ACPI_REDUCED_HARDWARE enabled. However, there's no way I can think of or test all possible scenarios so feedback would be greatly appreciated. [1] Please see the ACPI Specification v5.0 for details on Hardware Reduced mode. [0] List at https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/AcpiReducedHw#Section_5… Al Stone (12): ACPI: introduce CONFIG_ACPI_REDUCED_HARDWARE to enable this ACPI mode ACPI: bus master reload is unsupported in ACPI reduced HW mode ACPI: clean up compiler warning about uninitialized field ACPI: HW reduced mode does not allow use of the FADT sci_interrupt field ACPI: ARM: exclude calls on ARM platforms, not include them on x86 ACPI: ensure several FADT fields are only used in HW reduced mode ACPI: do not reserve memory regions for some FADT entries in HW reduced mode ACPI: in HW reduced mode, getting power latencies from FADT is not allowed ACPI: add clarifying comment about processor throttling in HW reduced mode ACPI: ACPI_FADT_C2_MP_SUPPORTED must be ignored in HW reduced mode ACPI: use of ACPI_FADT_32BIT_TIMER is not allowed in HW reduced mode ACPI: correct #ifdefs so compiling without ACPI_REDUCED_HARDWARE works properly drivers/acpi/Kconfig | 8 ++++++++ drivers/acpi/acpica/utxface.c | 3 ++- drivers/acpi/bus.c | 9 +++++---- drivers/acpi/osl.c | 28 ++++++++++++++++++++-------- drivers/acpi/pci_link.c | 14 ++++++++------ drivers/acpi/processor_idle.c | 29 ++++++++++++++++++++++++----- drivers/acpi/processor_throttling.c | 8 ++++++++ drivers/acpi/sleep.c | 2 +- include/acpi/acconfig.h | 2 +- include/acpi/platform/aclinux.h | 6 ++++++ 10 files changed, 83 insertions(+), 26 deletions(-) -- 1.8.3.1

11 years, 8 months

3
14
0 0

[RFC PATCH] ACPI: ARM/ARM64: ensure the ACPI FACS global_lock is never used in HW reduced mode

by al.stone＠linaro.org

From: Al Stone <ahs3(a)redhat.com> This patch is dependent on the CONFIG_ACPI_REDUCED_HARDWARE patch already being in place. It may even make sense to be part of that series. The FACS contains a global_lock that is never to be used in Hardware Reduced mode. Instead of taking chances, this patch takes out the macros used for the global_lock if we are in Hardware Reduced mode so that they cannot be used. Signed-off-by: Al Stone <al.stone(a)linaro.org> --- arch/arm/include/asm/acpi.h | 3 ++- arch/arm64/include/asm/acpi.h | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm/include/asm/acpi.h b/arch/arm/include/asm/acpi.h index ca7efaa..cf67b09 100644 --- a/arch/arm/include/asm/acpi.h +++ b/arch/arm/include/asm/acpi.h @@ -82,6 +82,7 @@ /* Blob handling macros */ #define ACPI_BLOB_HEADER_SIZE 8 +#ifndef CONFIG_ACPI_REDUCED_HARDWARE int __acpi_acquire_global_lock(unsigned int *lock); int __acpi_release_global_lock(unsigned int *lock); @@ -90,9 +91,9 @@ int __acpi_release_global_lock(unsigned int *lock); #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \ ((Acq) = __acpi_release_global_lock(&facs->global_lock)) +#endif /* Basic configuration for ACPI */ -/* BOZO: hardware reduced acpi only? */ #ifdef CONFIG_ACPI extern int acpi_disabled; extern int acpi_noirq; diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index a19b73f..bb9411f 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -60,6 +60,7 @@ /* Blob handling macros */ #define ACPI_BLOB_HEADER_SIZE 8 +#ifndef CONFIG_ACPI_REDUCED_HARDWARE int __acpi_acquire_global_lock(unsigned int *lock); int __acpi_release_global_lock(unsigned int *lock); @@ -68,9 +69,9 @@ int __acpi_release_global_lock(unsigned int *lock); #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \ ((Acq) = __acpi_release_global_lock(&facs->global_lock)) +#endif /* Basic configuration for ACPI */ -/* BOZO: hardware reduced acpi only? */ #ifdef CONFIG_ACPI extern int acpi_disabled; extern int acpi_noirq; -- 1.8.3.1

11 years, 8 months

1
0
0 0

[PATCH 0/2] Fix DBG2 compilation template issue

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> The patches try to fix the DBG2 table compilation issue and also tries to add a template support for DBG2 tables. Naresh Bhat (2): iASL: Fix Table Info handler for DBG2 iASL: Add template support for dbg2 source/common/dmtable.c | 2 +- source/compiler/dtcompiler.h | 1 + source/compiler/dttemplate.h | 10 ++++++++++ 3 files changed, 12 insertions(+), 1 deletion(-) -- 1.7.9.5

11 years, 8 months

4
9
0 0

[RFC PATCH] ACPI: ASL for bus and devices enumeration

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> The ASL code for SMB, FPGA, AMBA bus and the devices on the bus. The SMB and FPGA are represented as Module device. The container object that acts as a bus node in a namespace. It may contain child objects that are devices or buses. The module device is declared using the ACPI0004 hardware identifier (HID). The AMBA is represented as a separate device along with UART. This patch is applied and tested on v8 model along with "Hanjun Guo" - Convert the fixed clock to ACPI and "Brandon Anderson" - ARM AMBA bus connector resource changes. The sample output logs on v8 model as below root@genericarmv8:/sys# find . -name LINA* ./bus/acpi/devices/LINA0003:00 ./bus/acpi/devices/LINA0005:00 ./bus/acpi/devices/LINA0007:00 ./bus/acpi/devices/LINA0008:00 ./bus/acpi/devices/LINA0008:01 ./bus/acpi/devices/LINA0008:02 ./bus/acpi/devices/LINA0009:00 ./bus/platform/devices/LINA0003:00 ./bus/platform/devices/LINA0005:00 ./bus/platform/devices/LINA0007:00 ./bus/platform/devices/LINA0008:00 ./bus/platform/devices/LINA0008:01 ./bus/platform/devices/LINA0008:02 ./bus/platform/drivers/smc91x/LINA0003:00 ./bus/platform/drivers/fixed-clk/LINA0008:00 ./bus/platform/drivers/fixed-clk/LINA0008:01 ./bus/platform/drivers/fixed-clk/LINA0008:02 ./bus/platform/drivers/arm-pmu/LINA0007:00 ./bus/platform/drivers/virtio-mmio/LINA0005:00 ./devices/platform/LINA0003:00 ./devices/platform/LINA0005:00 ./devices/platform/LINA0007:00 ./devices/platform/LINA0008:00 ./devices/platform/LINA0008:01 ./devices/platform/LINA0008:02 ./devices/LNXSYSTM:00/device:00/LINA0007:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0003:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:01 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:02 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/ACPI0004:02/LINA0005:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/ACPI0004:02/LINA0009:00 root@genericarmv8:/sys# root@genericarmv8:/sys# find . -name AMBA* ./bus/acpi/devices/AMBA0000:00 ./bus/platform/devices/AMBA0000:00 ./bus/platform/drivers/amba-acpi/AMBA0000:00 ./devices/platform/AMBA0000:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00 root@genericarmv8:/sys# root@genericarmv8:/sys/bus/amba/devices# ls device:01 device:02 device:03 device:04 root@genericarmv8:/sys/bus/amba/devices# Naresh Bhat (1): foundation: Add ASL for bus, devices enumeration platforms/foundation-v8.acpi/dsdt.asl | 181 +++++++++++++++++++++++++++++++-- 1 file changed, 175 insertions(+), 6 deletions(-) -- 1.7.9.5

11 years, 8 months

3
3
0 0

[RFC PATCH] Add HID for UART devices

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> Add the HID as we have listed on linaro ACPI registry https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/ACPILinaroRegistry The logs on v8 as below root@genericarmv8:/sys# find . -name LINA000A* ./bus/acpi/devices/LINA000A:00 ./bus/acpi/devices/LINA000A:01 ./bus/acpi/devices/LINA000A:02 ./bus/acpi/devices/LINA000A:03 ./bus/amba/devices/LINA000A:00 ./bus/amba/devices/LINA000A:01 ./bus/amba/devices/LINA000A:02 ./bus/amba/devices/LINA000A:03 ./bus/amba/drivers/uart-pl011/LINA000A:00 ./bus/amba/drivers/uart-pl011/LINA000A:01 ./bus/amba/drivers/uart-pl011/LINA000A:02 ./bus/amba/drivers/uart-pl011/LINA000A:03 ./devices/platform/LINA000A:00 ./devices/platform/LINA000A:01 ./devices/platform/LINA000A:02 ./devices/platform/LINA000A:03 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:01 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:02 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:03 root@genericarmv8:/sys# Naresh Bhat (1): foundation-v8: Add HID for UART devices platforms/foundation-v8.acpi/dsdt.asl | 4 ++++ 1 file changed, 4 insertions(+) -- 1.7.9.5

11 years, 8 months

3
4
0 0

[RFC PATCH] arm64: dts: Delete enumerated bus, device binding

by naresh.bhat＠linaro.org

From: Naresh Bhat <naresh.bhat(a)linaro.org> The following bus/device bindings are moved to DSDT. It would be better to remove those permanently from the foundation-v8-acpi.dts file. 1. aliases of serial0 2. pmu 3. smb 4. ethernet 5. fixed-clock 6. iofpga 7. vexpress-sysreg 8. uart 9. virtio_block After deletion of bus/devices from FDT, the enumeration looks perfectly fine on v8 model. The logs are as below root@genericarmv8:/sys# find . -name LINA* ./bus/acpi/devices/LINA0003:00 ./bus/acpi/devices/LINA0005:00 ./bus/acpi/devices/LINA0007:00 ./bus/acpi/devices/LINA0008:00 ./bus/acpi/devices/LINA0008:01 ./bus/acpi/devices/LINA0008:02 ./bus/acpi/devices/LINA0009:00 ./bus/acpi/devices/LINA000A:00 ./bus/acpi/devices/LINA000A:01 ./bus/acpi/devices/LINA000A:02 ./bus/acpi/devices/LINA000A:03 ./bus/amba/devices/LINA000A:00 ./bus/amba/devices/LINA000A:01 ./bus/amba/devices/LINA000A:02 ./bus/amba/devices/LINA000A:03 ./bus/amba/drivers/uart-pl011/LINA000A:00 ./bus/amba/drivers/uart-pl011/LINA000A:01 ./bus/amba/drivers/uart-pl011/LINA000A:02 ./bus/amba/drivers/uart-pl011/LINA000A:03 ./bus/platform/devices/LINA0003:00 ./bus/platform/devices/LINA0005:00 ./bus/platform/devices/LINA0007:00 ./bus/platform/devices/LINA0008:00 ./bus/platform/devices/LINA0008:01 ./bus/platform/devices/LINA0008:02 ./bus/platform/devices/LINA0009:00 ./bus/platform/drivers/vexpress-sysreg/LINA0009:00 ./bus/platform/drivers/smc91x/LINA0003:00 ./bus/platform/drivers/fixed-clk/LINA0008:00 ./bus/platform/drivers/fixed-clk/LINA0008:01 ./bus/platform/drivers/fixed-clk/LINA0008:02 ./bus/platform/drivers/arm-pmu/LINA0007:00 ./bus/platform/drivers/virtio-mmio/LINA0005:00 ./devices/platform/LINA0003:00 ./devices/platform/LINA0005:00 ./devices/platform/LINA0007:00 ./devices/platform/LINA0008:00 ./devices/platform/LINA0008:01 ./devices/platform/LINA0008:02 ./devices/platform/LINA0009:00 ./devices/platform/LINA000A:00 ./devices/platform/LINA000A:01 ./devices/platform/LINA000A:02 ./devices/platform/LINA000A:03 ./devices/LNXSYSTM:00/device:00/LINA0007:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:00 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:01 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:02 ./devices/LNXSYSTM:00/device:00/AMBA0000:00/LINA000A:03 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0003:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:01 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/LINA0008:02 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/ACPI0004:02/LINA0005:00 ./devices/LNXSYSTM:00/device:00/ACPI0004:01/ACPI0004:02/LINA0009:00 root@genericarmv8:/sys# Naresh Bhat (1): arm64: dts: delete bus, devices binding arch/arm64/boot/dts/foundation-v8-acpi.dts | 166 ---------------------------- 1 file changed, 166 deletions(-) -- 1.7.9.5

11 years, 8 months

2
2
0 0

[RFC PATCH 0/5] Convert the fixed clock to ACPI

by Hanjun Guo

This is the RFC version for converting the fixed clock to ACPI. Since the ACPI namespace is ok at the very late stage of system boot, so I did some major change in boot sequence for the enumeration of fixed clock, amba bus and its child device. I think this part should be review carefully. For DT, it works well for armv8 foudation model after the change in boot sequence, but the UART and amba bus are dependent on the fixed clock, if I only convert the fixed clock to ACPI, UART will not work. So this is the RFC version and the UART will be converted together in next version. Hanjun Guo (5): Driver / clk: add platform driver for fixed clock ACPI / ARM64: Whitelist the ACPI ID for fixed clock ACPI / platform: add some comments for internel registry of _HID names ACPI / fixed-clock: Add ACPI driver for fixed clock Clk / fixed clock: Delay the enumeration of fixed clock and make it popssible for ACPI arch/arm64/kernel/setup.c | 2 +- drivers/acpi/acpi_platform.c | 7 ++-- drivers/clk/clk-fixed-rate.c | 78 +++++++++++++++++++++++++++++++++++++++++- 3 files changed, 82 insertions(+), 5 deletions(-) -- 1.7.9.5

11 years, 8 months

3
8
0 0

[PATCH 1/2] net: smc91x fix braino in CONFIG_ACPI usage

by Graeme Gregory

linux/acpi.h already does the correct thing when CONFIG_ACPI is not set so there is no need to wrap it in #ifdef CONFIG_ACPI and in fact this stops ACPI_PTR() working in the non ACPI case. Signed-off-by: Graeme Gregory <graeme.gregory(a)linaro.org> --- drivers/net/ethernet/smsc/smc91x.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c index 940097f..7aa517d 100644 --- a/drivers/net/ethernet/smsc/smc91x.c +++ b/drivers/net/ethernet/smsc/smc91x.c @@ -82,6 +82,7 @@ static const char version[] = #include <linux/mii.h> #include <linux/workqueue.h> #include <linux/of.h> +#include <linux/acpi.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> @@ -89,10 +90,6 @@ static const char version[] = #include <asm/io.h> -#ifdef CONFIG_ACPI -#include <linux/acpi.h> -#endif - #include "smc91x.h" #ifndef SMC_NOWAIT -- 1.8.3.1

11 years, 8 months

2
3
0 0

[PATCH 0/2] ioremap_early fixes for arm64

by Graeme Gregory

Hi, I am proposing one cherry pick from Mark Salters tree in the same way that we already cherry picked from Leifs for ioremap_early support. Also changed the order of setup.c initialisation to work under ioremap_early. I have boot tested this on the RTSM model. Thanks Graeme

11 years, 8 months

3
9
0 0

APEI perf events notes

by Tomasz Nowicki

Hi, I am able to see APEI events (memory errors) via perft tool and now switch my context to others types of error. According to our plan, cache ECC error type would be next. I want to place tracepoints at the end of every available APEI error processing path (actually it is already done for memory errors). This way we RAS daemon could keep its eye on them. There would be of course more type of error coming from others ARM SoC peripherals. GHES driver is unrolling data structure to "Common Platform Error Record" and try to obtain error section (defined in UEFI spec). Cache ECC fall within "Processor Error Sections". Here appear problems since most of "Common Platform Error Records" are x86/IA64 oriented. So my proposals would be to: 1. Implement all available APEI errors as tracepoint that is: Processor and PCI errors 2. Mean time, create proposals for UEFI spec. toward "Common Platform Error Record" expansion for ARM architecture. This would require changing available structures and add new sections for SoC peripherals (USB, Ethernet etc.). 3. In turn, new sections for SoC peripherals in UEFI spec. would require ACPI spec. change as well, I mean new error sources for HEST table. 4. Once above proposals would be accept, we could fill in tracepoints for new error types. I would appreciate any input on this. Regards, Tomasz

11 years, 8 months

1
0
0 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

Linaro-acpi