1/* 2 * Copyright 2017, Data61 3 * Commonwealth Scientific and Industrial Research Organisation (CSIRO) 4 * ABN 41 687 119 230. 5 * 6 * This software may be distributed and modified according to the terms of 7 * the BSD 2-Clause license. Note that NO WARRANTY is provided. 8 * See "LICENSE_BSD2.txt" for details. 9 * 10 * @TAG(DATA61_BSD) 11 */ 12 13#include <autoconf.h> 14 15#include <stdio.h> 16#include <stdlib.h> 17#include <assert.h> 18 19#include <sel4/sel4.h> 20 21#include <simple-default/simple-default.h> 22#include <utils/util.h> 23#include <vspace/page.h> 24 25seL4_Error 26simple_default_get_ioapic(void *data, seL4_CNode root, seL4_Word index, uint8_t depth, 27 seL4_Word ioapic, seL4_Word pin, seL4_Word level, seL4_Word polarity, 28 seL4_Word vector) 29{ 30 return seL4_IRQControl_GetIOAPIC(seL4_CapIRQControl, root, index, depth, ioapic, pin, level, 31 polarity, vector); 32} 33 34seL4_Error 35simple_default_get_irq(void *data, int irq, seL4_CNode root, seL4_Word index, uint8_t depth) { 36 37 if (config_set(CONFIG_IRQ_IOAPIC)) { 38 /* we need to try and guess how to map a requested IRQ to an IOAPIC 39 * pin, as well as what the edge and polarity detection mode is. 40 * Without any way to inspect the ACPI tables here we make the following 41 * assumptions 42 * + There is an override for ISA-IRQ-0 -> GSI 2 43 * + Only one IOAPIC and error on IRQs >= 24 44 * + IRQs below 16 are ISA and edge detected polarity high 45 * + IRQs 16 and above are PCI and level detected polarity low 46 */ 47 int vector = irq; 48 if (irq == 0) { 49 irq = 2; 50 } 51 int level; 52 int low_polarity; 53 if (irq >= 16) { 54 level = 1; 55 low_polarity = 1; 56 } else { 57 level = 0; 58 low_polarity = 0; 59 } 60 return simple_default_get_ioapic(data, root, index, depth, 0, irq, level, low_polarity, vector); 61 } else { 62 return seL4_IRQControl_Get(seL4_CapIRQControl, irq, root, index, depth); 63 } 64} 65 66seL4_Error 67simple_default_get_msi(void *data, seL4_CNode root, seL4_Word index, uint8_t depth, 68 seL4_Word pci_bus, seL4_Word pci_dev, seL4_Word pci_func, seL4_Word handle, 69 seL4_Word vector) 70{ 71 return seL4_IRQControl_GetMSI(seL4_CapIRQControl, root, index, depth, pci_bus, pci_dev, 72 pci_func, handle, vector); 73} 74 75seL4_Error 76simple_default_get_IOPort_cap(void *data, uint16_t start_port, uint16_t end_port, seL4_Word root, seL4_Word dest, seL4_Word depth) { 77 return seL4_X86_IOPortControl_Issue(seL4_CapIOPortControl, start_port, end_port, root, dest, depth); 78} 79 80void 81simple_default_init_arch_simple(arch_simple_t *simple, void *data) 82{ 83 simple->data = data; 84 simple->msi = simple_default_get_msi; 85 simple->irq = simple_default_get_irq; 86 simple->ioapic = simple_default_get_ioapic; 87 simple->IOPort_cap = simple_default_get_IOPort_cap; 88} 89