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* linux: Use kvtophys instead of _kvtophysSamuel Thibault2021-08-281-1/+2
| | | | | | | | _kvtophys only works with direct-mappable memory, which is scarse, better use kvtophys that can work with any kind of memory. * linux/src/include/asm-i386/io.h: Include <intel/pmap.h> (virt_to_phys): Use kvtophys instead of _kvtophys.
* linux block: Fix checking block sector.Samuel Thibault2021-08-271-0/+2
| | | | * linux/dev/glue/block.c (check_rw_block): Return 0 on no error.
* vm_page_grab: allow allocating in high memorySamuel Thibault2021-08-278-14/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | vm_page_grab was systematically using the VM_PAGE_SEL_DIRECTMAP selector to play safe with existing code. This adds a flags parameter to let callers of vm_page_grab specify their constraints. Linux drivers need 32bit dmas, Xen drivers use kvtophys to clear some data. Callers of kmem_pagealloc_physmem and vm_page_grab_phys_addr also use kvtophys. Otherwise allocations can go to highmem. This fixes the allocation jam in the directmap segment. * vm/vm_page.h (VM_PAGE_DMA, VM_PAGE_DMA32, VM_PAGE_DIRECTMAP, VM_PAGE_HIGHMEM): New macros. (vm_page_grab): Add flags parameter. * vm/vm_resident.c (vm_page_grab): Choose allocation selector according to flags parameter. (vm_page_convert, vm_page_alloc): Pass VM_PAGE_HIGHMEM to vm_page_grab. (vm_page_grab_phys_addr): Pass VM_PAGE_DIRECTMAP to vm_page_grab. * vm/vm_fault.c (vm_fault_page): Pass VM_PAGE_HIGHMEM to vm_page_grab. * vm/vm_map.c (vm_map_copy_steal_pages): Pass VM_PAGE_HIGHMEM to vm_page_grab. * kern/slab.c (kmem_pagealloc_physmem): Pass VM_PAGE_DIRECTMAP to vm_page_grab. * i386/intel/pmap.c (pmap_page_table_page_alloc): Pass VM_PAGE_DIRECTMAP to vm_page_grab. * xen/block.c (device_read): Pass VM_PAGE_DIRECTMAP to vm_page_grab. * linux/dev/glue/block.c (alloc_buffer): Pass VM_PAGE_DMA32 to vm_page_grab.
* db_show_vmstat: Show segment name rather than its numberSamuel Thibault2021-08-231-1/+1
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* db_show_vmstat: Also show segment sizeSamuel Thibault2021-08-221-0/+2
| | | | * vm/vm_page.c (db_show_vmstat): Add printing the segment size.
* db_show_vmstat: Drop duplicate outputSamuel Thibault2021-08-221-3/+0
| | | | | * vm/vm_page.c (db_show_vmstat): Drop displaying cache numbers a second time.
* device_read: Add dealloc for dataSamuel Thibault2021-08-211-1/+1
| | | | | | | | | It would be very tricky for the server to manage deallocation for device_read, and does not seem useful anyway. device_reply.defs already has it. * include/device/device.defs (device_read): Add dealloc flag for the data array.
* db show vmstat: also show segments statsSamuel Thibault2021-08-211-0/+23
| | | | * vm/vm_page.c (db_show_vmstat)
* db: Add show vmstat commandSamuel Thibault2021-08-213-0/+50
| | | | | | | | with an output similar to the userland vmstat command * vm/vm_page.c (db_show_vmstat): New function. * vm/vm_page.h (db_show_vmstat): New prototype. * ddb/db_command.c (db_show_cmds): Add vmstat command.
* block: Look out for disk sector number overflowSamuel Thibault2021-08-173-9/+72
| | | | | | | | | | * linux/dev/drivers/block/ahci.c (ahci_do_port_request): Reject sectors beyond LBA48 or LBA28. * linux/dev/glue/block.c (check_rw_block): New function. (rdwr_partial, rdwr_full): Use check_rw_block to reject block number overflows. * linux/src/drivers/block/ide.c (do_rw_disk): Reject sectors beyond LBA28 or CHS.
* assert: Tell the compiler that failures are unlikelySamuel Thibault2021-08-121-1/+1
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* memory_object_proxy: Deliver no-sender notifications on a separate portSamuel Thibault2021-08-091-4/+13
| | | | Otherwise userland can send spurious notifications.
* memory_object_proxy: Explicit that creation wants a send rightSamuel Thibault2021-08-091-2/+2
| | | | This is required anyway, and allows the caller to pass on MAKE_SEND.
* memory_object_proxy: Fix send port right leakSamuel Thibault2021-08-091-1/+2
| | | | On success we'd have to clean the port right. Just consume it.
* memory_object_proxy: Fix checking proxy lengthSamuel Thibault2021-08-091-1/+8
| | | | | We want to prevent subproxies from requesting larger sizes than what a proxy initially allowed.
* Memory object proxy: add support for ranges and nestingJoan Lledó2021-08-093-19/+38
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* memory_object_proxy: release resources on no-send notificationSamuel Thibault2021-08-091-0/+6
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* vm_map: Allow exagerated max_prot for nowSamuel Thibault2021-06-061-3/+3
| | | | | | | glibc's mmap implementation assumes that gnumach will cap the prot for it, so for now let's revert back to capping rather than rejecting. That fixes mmap(SHARED|READ) for read-only objects.
* Revert "vm_map: Allow passing the name of a memory object"Samuel Thibault2021-05-241-4/+2
| | | | This reverts commit af9f471b500bcd0c1023259c7577e074fe6d3ee5.
* vm_map: Fix proxy object protection checkSergey Bugaev2021-05-241-3/+12
| | | | | | | | | * If not making a copy, don't cap protection to the limit enforced by the proxy, and only require read access. This fixes mapping parts of read-only files MAP_ANON + PROT_READ|PROT_WRITE. * Instead of silently capping protection, return KERN_PROTECTION_FAILURE to the caller like the other vm_*() routines do.
* rtc: Add read/write messagesSamuel Thibault2021-04-051-1/+16
| | | | | | | | | | | We are still having issues with bogus dates. This adds prints at boot and time set, to make sure what we actually read and write. * i386/i386at/rtc.c: Include <kern/printf.h> (readtodc): Warning about reaching CENTURY_START. Print the time read from RTC. (writetodc): Record in RTC remainder of division of year by 100 rather than subtracting 1900. Print the time written to RTC.
* kd: Do not read the CMOS ramSamuel Thibault2021-04-052-3/+10
| | | | | | | This could conflict with read/writing the RTC. * i386/i386at/kd.c (kd_xga_init): Do not read the CRAM. We were always assuming VGA anyway.
* apic: Also unmask irq 3 and 4 earlySamuel Thibault2021-04-051-0/+7
| | | | | | | We unmasked by hand kd's irq 1, but com0/1 also need unmasking. More generally we should unmask irqs as appropriate. * i386/i386at/model_dep.c (machine_init): Unmask irq 3 and 4.
* ioapic: Fix arg passing of redirection entryDamien Zammit2021-04-051-6/+7
| | | | Message-Id: <20210405115921.184572-3-damien@zamaudio.com>
* ioapic: Refactor EOIDamien Zammit2021-04-054-3/+2
| | | | Message-Id: <20210405115921.184572-2-damien@zamaudio.com>
* thread_info: Fix crash when requesting for thread that never ranSamuel Thibault2021-04-051-3/+4
| | | | | * kern/thread.c (thread_info): Set last_processor to 0 when the thread never ran.
* thread_info: Fix returning last_processorSamuel Thibault2021-04-051-1/+1
| | | | | | | thread->last_processor is a processor_t, not a slot number. * kern/thread.c (thread_info): Set sched_info->last_processor to thread->last_processor->slot_num rather than thread->last_processor.
* ioapic: Use irq specific EOI properly when detectedDamien Zammit2021-04-052-8/+26
| | | | Message-Id: <20210405052916.174771-5-damien@zamaudio.com>
* Don't call EOI on spurious interruptsDamien Zammit2021-04-052-12/+6
| | | | Message-Id: <20210405052916.174771-4-damien@zamaudio.com>
* ioapic: target first processor for interruptsDamien Zammit2021-04-051-1/+2
| | | | Message-Id: <20210405052916.174771-3-damien@zamaudio.com>
* ioapic: Enable processor focus to BSPDamien Zammit2021-04-052-0/+4
| | | | Message-Id: <20210405052916.174771-2-damien@zamaudio.com>
* SMP: Fix warningsSamuel Thibault2021-04-0411-3/+28
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* SMP: fix getting the interrupt stack address and sizeSamuel Thibault2021-04-044-4/+7
| | | | | | | * i386/i386at/boothdr.S (_eintstack): Add missing common. * i386/xen/xen_boothdr.S (_eintstack): Add missing common. * x86_64/xen/xen_boothdr.S (_eintstack): Add missing common. * i386/i386/mp_desc.c (intstack, eintstack): Add missing underscore.
* Add ioapic support disabled by defaultDamien Zammit2021-04-0418-29/+583
| | | | | | | Use --enable-ncpus=x --enable-apic where x > 1 for SMP+APIC support. Use neither for no SMP and old PIC support. Message-Id: <20210404050812.145483-1-damien@zamaudio.com>
* pit: Add more macrosSamuel Thibault2021-04-031-2/+7
| | | | | * i386/i386/pit.h (PITAUX_VAL, PIT_C2): New macros. (PIT_RATEMODE): Fix macro value.
* linux: Add option to disable Linux groupsSamuel Thibault2021-03-311-1/+5
| | | | | * linux/configfrag.ac (--disable-linux-groups): New option. (AC_OPTION_Linux_group): Default to $enable_linux_groups.
* intr: Always share irqsSamuel Thibault2021-03-311-0/+2
| | | | | | We currently already always assume that irqs user handlers can be shared * device/intr.c (install_user_intr_handler): Add SA_SHIRQ to flags.
* intr: Add user interrupt handling code for non-Linux caseDamien Zammit2021-03-311-0/+80
| | | | | | | | | | * device/intr.c: Include <kern/assert.h> (struct intr_list): New structure. (user_intr_handlers): New array. (user_irq_handler): New function. (install_user_intr_handler): New function. Message-Id: <20210330025830.63528-2-damien@zamaudio.com>
* Keep BIOS mapped even without LinuxSamuel Thibault2021-03-312-7/+1
| | | | | | | | Not only Linux drivers need BIOS mapped. * i386/i386at/model_dep.c (i386at_init) [!LINUX_DEV]: Map the low memory. * i386/intel/pmap.c (pmap_create) [!LINUX_DEV]: Likewise.
* apic: Reorder definesDamien Zammit2021-03-291-2/+2
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* linux irq: Avoid hardcoding the number of interrupts.Damien Zammit2021-03-281-14/+8
| | | | | | | | | * linux/dev/arch/i386/kernel/irq.c: Include <i386/irq.h> instead of <i386/pic.h>. (irq_action): Use NINTR instead of 16, do not bother expliciting the initialization. (install_user_intr_handler, request_irq, free_irq, probe_irq_on, probe_irq_off, reserve_mach_irqs): Use NINTR instead of 16.
* pic: Move to interrupts 0x20-0x2fDamien Zammit2021-03-282-5/+3
| | | | | | * i386/i386/pic.h (PICM_VECTBASE): Set to 0x20. * i386/i386at/idt.h (IDTSZ): Set to 0x20 + 0x10. (PIC_INT_BASE): Set to 0x20.
* Existing SMP apic code improvementsDamien Zammit2021-03-284-21/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * i386/i386/apic.c (acpi_get_irq_override): New function. (apic_get_ioapic): Make it return IoApicData* rather than IoApicData. (apic_print_info): Manage IoApicData* rather than IoApicData. * i386/i386/apic.h (struct ApicReg): Use uint32_t instead of unsigned. (struct ioapic_route_entry): New structure. (union ioapic_route_entry_union): New union. (ApicLocalUnit): Rename base to gsi_base. Add ioapic field. (APIC_IRQ_OVERRIDE_POLARITY_MASK, APIC_IRQ_OVERRIDE_TRIGGER_MASK): New macros. (acpi_get_irq_override, ): New prototype. (apic_get_ioapic): Update prototype. (lapic): New declaration. (IMCR_SELECT, IMCR_DATA, MODE_IMCR, IMCR_USE_PIC, IMCR_USE_APIC, LAPIC_ENABLE, LAPIC_NMI, LAPIC_DISABLE, LAPIC_TIMER_PERIODIC, LAPIC_TIMER_DIVIDE_2, LAPIC_TIMER_DIVIDE_4, LAPIC_TIMER_DIVIDE_8, LAPIC_TIMER_DIVIDE_16, LAPIC_TIMER_BASEDIV, NINTR, IOAPIC_FIXED, IOAPIC_PHYSICAL, IOAPIC_LOGICAL, IOAPIC_NMI, IOAPIC_EXTINT, IOAPIC_ACTIVE_HIGH, IOAPIC_ACTIVE_LOW, IOAPIC_EDGE_TRIGGERED, IOAPIC_LEVEL_TRIGGERED, IOAPIC_MASK_ENABLED, IOAPIC_MASK_DISABLED): New macros. * i386/i386at/acpi_parse_apic.h (struct acpi_apic_ioapic): Rename base field to gsi_base. * i386/i386at/acpi_parse_apic.c (acpi_apic_add_ioapic): Update to gsi_base new name. Set ioapic field. (acpi_apic_setup): Rename lapic to lapic_unit. Message-Id: <20210328060320.36194-5-damien@zamaudio.com>
* Don't allow writing to acpi table in memoryDamien Zammit2021-03-281-1/+1
| | | | | | * i386/i386at/acpi_parse_apic.c (acpi_get_apic): Map rsdt entries read-only. Message-Id: <20210328060320.36194-4-damien@zamaudio.com>
* fixup acpi base table searchDamien Zammit2021-03-281-18/+12
| | | | | | | | | * i386/i386at/acpi_parse_apic.c (acpi_check_rsdp_align): Make it take a void* instead of uint32_t. (acpi_get_rsdp): Apply phystokv on the EBDA base and 0xE0000. (acpi_apic_setup): Drop spurious negation. Message-Id: <20210328060320.36194-3-damien@zamaudio.com>
* configure: Add block groupDamien Zammit2021-03-281-4/+16
| | | | | | | | | | This is the last group needed to easily disable the Linux glue. * linux/configfrag.ac (block): New group. (floppy): Set group to block. (ide): Set group to block. Message-Id: <20210328060320.36194-2-damien@zamaudio.com>
* fix EISA check in init_IRQDamien Zammit2021-03-271-1/+1
| | | | Message-Id: <20210326094850.2606-5-damien@zamaudio.com>
* clock: Let timer proceed even before we have set threadsDamien Zammit2021-03-271-1/+4
| | | | Message-Id: <20210326094850.2606-4-damien@zamaudio.com>
* ahci: Fix variable nameAndrea G. Monaco2021-02-211-4/+4
| | | | * linux/dev/drivers/block/ahci.c (ahci_probe_dev): Rename spd to det.
* i386 fpu: fix bogus checkAndrea G. Monaco2021-02-111-1/+1
| | | | | | | Avoid panicing on all CPUs that do not support xsaves. * i386/i386/fpu.c (init_fpu): Panic on CPUs that do not support xsaves only if the cpu-reported xsave size is smaller than expected.
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