X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fio_apic.c;h=7a0c6e8f18db4cb3bc9111be7ee1877b0c41e82f;hb=97be69907158d04dee9d87650b491a830698b700;hp=dce46ddb9c1a922a5ea1065cec31169824247b9f;hpb=fa3ef2ff5003b7cd27bfe11e970760c940525966;p=palacios.git diff --git a/palacios/src/devices/io_apic.c b/palacios/src/devices/io_apic.c index dce46dd..7a0c6e8 100644 --- a/palacios/src/devices/io_apic.c +++ b/palacios/src/devices/io_apic.c @@ -20,7 +20,8 @@ #include #include -#include +#include +#include #include #ifndef CONFIG_DEBUG_IO_APIC @@ -135,18 +136,17 @@ struct io_apic_state { struct redir_tbl_entry redir_tbl[24]; - // This is a temporary method of communication between the IOAPIC and the LAPIC - struct vm_device * apic; + struct vm_device * icc_bus; }; -static void init_ioapic_state(struct io_apic_state * ioapic) { +static void init_ioapic_state(struct io_apic_state * ioapic, uint32_t id) { int i = 0; ioapic->base_addr = IO_APIC_BASE_ADDR; ioapic->index_reg = 0; - ioapic->ioapic_id.val = 0x00000000; + ioapic->ioapic_id.id = id; ioapic->ioapic_ver.val = 0x00170011; ioapic->ioapic_arb_id.val = 0x00000000; @@ -155,16 +155,20 @@ static void init_ioapic_state(struct io_apic_state * ioapic) { // Mask all interrupts until they are enabled.... ioapic->redir_tbl[i].mask = 1; } + + // special case redir_tbl[0] for pin 0 as ExtInt for Virtual Wire Mode + // ioapic->redir_tbl[0].del_mode=EXTINT; + // ioapic->redir_tbl[0].mask=0; } -static int ioapic_read(addr_t guest_addr, void * dst, uint_t length, void * priv_data) { +static int ioapic_read(struct guest_info * core, addr_t guest_addr, void * dst, uint_t length, void * priv_data) { struct vm_device * dev = (struct vm_device *)priv_data; struct io_apic_state * ioapic = (struct io_apic_state *)(dev->private_data); uint32_t reg_tgt = guest_addr - ioapic->base_addr; uint32_t * op_val = (uint32_t *)dst; - PrintDebug("IOAPIC Read at %p\n", (void *)guest_addr); + PrintDebug("ioapic %u: IOAPIC Read at %p\n", ioapic->ioapic_id.id, (void *)guest_addr); if (reg_tgt == 0x00) { *op_val = ioapic->index_reg; @@ -180,35 +184,37 @@ static int ioapic_read(addr_t guest_addr, void * dst, uint_t length, void * priv case IOAPIC_ARB_REG: *op_val = ioapic->ioapic_arb_id.val; break; - default: - { - uint_t redir_index = (ioapic->index_reg - IOAPIC_REDIR_BASE_REG) >> 1; - uint_t hi_val = (ioapic->index_reg - IOAPIC_REDIR_BASE_REG) % 1; - - if (redir_index > 0x3f) { - PrintError("Invalid redirection table entry %x\n", (uint32_t)redir_index); - return -1; - } - if (hi_val) { - *op_val = ioapic->redir_tbl[redir_index].hi; - } else { - *op_val = ioapic->redir_tbl[redir_index].lo; - } + default: { + uint_t redir_index = (ioapic->index_reg - IOAPIC_REDIR_BASE_REG) >> 1; + uint_t hi_val = (ioapic->index_reg - IOAPIC_REDIR_BASE_REG) % 1; + + if (redir_index > 0x3f) { + PrintError("ioapic %u: Invalid redirection table entry %x\n", ioapic->ioapic_id.id, (uint32_t)redir_index); + return -1; + } + + if (hi_val) { + *op_val = ioapic->redir_tbl[redir_index].hi; + } else { + *op_val = ioapic->redir_tbl[redir_index].lo; } + } } } + PrintDebug("ioapic %u: IOAPIC Read at %p gave value 0x%x\n", ioapic->ioapic_id.id, (void *)guest_addr, *op_val); + return length; } -static int ioapic_write(addr_t guest_addr, void * src, uint_t length, void * priv_data) { +static int ioapic_write(struct guest_info * core, addr_t guest_addr, void * src, uint_t length, void * priv_data) { struct vm_device * dev = (struct vm_device *)priv_data; struct io_apic_state * ioapic = (struct io_apic_state *)(dev->private_data); uint32_t reg_tgt = guest_addr - ioapic->base_addr; uint32_t op_val = *(uint32_t *)src; - PrintDebug("IOAPIC Write at %p (val = %d)\n", (void *)guest_addr, *(uint32_t *)src); + PrintDebug("ioapic %u: IOAPIC Write at %p (val = %d)\n", ioapic->ioapic_id.id, (void *)guest_addr, *(uint32_t *)src); if (reg_tgt == 0x00) { ioapic->index_reg = op_val; @@ -216,11 +222,12 @@ static int ioapic_write(addr_t guest_addr, void * src, uint_t length, void * pri // IOWIN register switch (ioapic->index_reg) { case IOAPIC_ID_REG: + // What does this do to our relationship with the ICC bus? ioapic->ioapic_id.val = op_val; break; case IOAPIC_VER_REG: // GPF/PageFault/Ignore? - PrintError("Writing to read only IOAPIC register\n"); + PrintError("ioapic %u: Writing to read only IOAPIC register\n", ioapic->ioapic_id.id); return -1; case IOAPIC_ARB_REG: ioapic->ioapic_arb_id.val = op_val; @@ -234,14 +241,14 @@ static int ioapic_write(addr_t guest_addr, void * src, uint_t length, void * pri if (redir_index > 0x3f) { - PrintError("Invalid redirection table entry %x\n", (uint32_t)redir_index); + PrintError("ioapic %u: Invalid redirection table entry %x\n", ioapic->ioapic_id.id, (uint32_t)redir_index); return -1; } if (hi_val) { - PrintDebug("Writing to hi of pin %d\n", redir_index); + PrintDebug("ioapic %u: Writing to hi of pin %d\n", ioapic->ioapic_id.val, redir_index); ioapic->redir_tbl[redir_index].hi = op_val; } else { - PrintDebug("Writing to lo of pin %d\n", redir_index); + PrintDebug("ioapic %u: Writing to lo of pin %d\n", ioapic->ioapic_id.id, redir_index); op_val &= REDIR_LO_MASK; ioapic->redir_tbl[redir_index].lo &= ~REDIR_LO_MASK; ioapic->redir_tbl[redir_index].lo |= op_val; @@ -253,51 +260,55 @@ static int ioapic_write(addr_t guest_addr, void * src, uint_t length, void * pri return length; } -/* Interrupt controller functions */ -static int ioapic_intr_pending(struct guest_info * info, void * private_data) { - return 0; -} - - -static int ioapic_get_intr_number(struct guest_info * info, void * private_data) { - return 0; -} -static int ioapic_begin_irq(struct guest_info * info, void * private_data, int irq) { - return 0; -} - -static int ioapic_raise_irq(struct guest_info * info, void * private_data, int irq) { +static int ioapic_raise_irq(struct v3_vm_info * vm, void * private_data, int irq) { struct vm_device * dev = (struct vm_device *)private_data; struct io_apic_state * ioapic = (struct io_apic_state *)(dev->private_data); struct redir_tbl_entry * irq_entry = NULL; if (irq > 24) { - PrintDebug("IRQ out of range of IO APIC\n"); + PrintDebug("ioapic %u: IRQ out of range of IO APIC\n", ioapic->ioapic_id.id); return -1; } irq_entry = &(ioapic->redir_tbl[irq]); if (irq_entry->mask == 0) { - PrintDebug("IOAPIC Signalling APIC to raise INTR %d\n", irq_entry->vec); - //v3_apic_raise_intr(info, ioapic->apic, irq_entry->vec); - v3_apic_raise_intr(ioapic->apic, irq_entry->vec); + + PrintDebug("ioapic %u: IOAPIC Signalling APIC to raise INTR %d\n", ioapic->ioapic_id.id, irq_entry->vec); + + + // the format of the redirection table entry is just slightly + // different than that of the lapic's cmd register, which is the other + // way an IPI is initiated. So we will translate + // + struct int_cmd_reg icr; + + icr.val = irq_entry->val; + icr.rsvd1=0; + icr.lvl=1; + icr.trig_mode=irq_entry->trig_mode; + icr.rem_rd_status=0; + icr.dst_shorthand=0; // no shorthand + icr.rsvd2=0; + + // Note: 0 yhere is "cluster model", but it should be irrelevant + // since we are sending this as a physical destination + PrintDebug("io apic %u: raising irq %u on ICC bus.\n", + ioapic->ioapic_id.id, irq); + v3_icc_send_ipi(ioapic->icc_bus, ioapic->ioapic_id.id,icr.val, 0, irq); } return 0; } /* I don't know if we can do anything here.... */ -static int ioapic_lower_irq(struct guest_info * info, void * private_data, int irq) { +static int ioapic_lower_irq(struct v3_vm_info * vm, void * private_data, int irq) { return 0; } -static struct intr_ctrl_ops intr_ops = { - .intr_pending = ioapic_intr_pending, - .get_intr_number = ioapic_get_intr_number, +static struct intr_router_ops router_ops = { .raise_intr = ioapic_raise_irq, - .begin_irq = ioapic_begin_irq, .lower_intr = ioapic_lower_irq, }; @@ -320,34 +331,37 @@ static struct v3_device_ops dev_ops = { -static int ioapic_init(struct guest_info * vm, v3_cfg_tree_t * cfg) { - struct vm_device * apic = v3_find_dev(vm, v3_cfg_val(cfg, "irq_bus")); - char * name = v3_cfg_val(cfg, "name"); +static int ioapic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) { + struct vm_device * icc_bus = v3_find_dev(vm, v3_cfg_val(cfg, "bus")); + char * dev_id = v3_cfg_val(cfg, "ID"); - if (!apic) { - PrintError("Could not locate APIC device (%s)\n", v3_cfg_val(cfg, "irq_bus")); + if (!icc_bus) { + PrintError("ioapic: Could not locate ICC BUS device (%s)\n", v3_cfg_val(cfg, "bus")); return -1; } - PrintDebug("Creating IO APIC\n"); + PrintDebug("ioapic: Creating IO APIC\n"); struct io_apic_state * ioapic = (struct io_apic_state *)V3_Malloc(sizeof(struct io_apic_state)); - ioapic->apic = apic; + ioapic->icc_bus = icc_bus; - struct vm_device * dev = v3_allocate_device(name, &dev_ops, ioapic); + struct vm_device * dev = v3_allocate_device(dev_id, &dev_ops, ioapic); if (v3_attach_device(vm, dev) == -1) { - PrintError("Could not attach device %s\n", name); + PrintError("ioapic: Could not attach device %s\n", dev_id); return -1; } - v3_register_intr_controller(vm, &intr_ops, dev); - init_ioapic_state(ioapic); + v3_register_intr_router(vm, &router_ops, dev); + + init_ioapic_state(ioapic,vm->num_cores); + + v3_icc_register_ioapic(vm,icc_bus,ioapic->ioapic_id.id); - v3_hook_full_mem(vm, ioapic->base_addr, ioapic->base_addr + PAGE_SIZE_4KB, + v3_hook_full_mem(vm, V3_MEM_CORE_ANY, ioapic->base_addr, ioapic->base_addr + PAGE_SIZE_4KB, ioapic_read, ioapic_write, dev); return 0;