| 1 | /* |
| 2 | * Copyright (c) 2019, Max Filippov, Open Source and Linux Lab. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * * Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * * Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * * Neither the name of the Open Source and Linux Lab nor the |
| 13 | * names of its contributors may be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #include "qemu/osdep.h" |
| 29 | #include "qapi/error.h" |
| 30 | #include "system/reset.h" |
| 31 | #include "hw/core/boards.h" |
| 32 | #include "hw/core/loader.h" |
| 33 | #include "hw/pci-host/gpex.h" |
| 34 | #include "net/net.h" |
| 35 | #include "elf.h" |
| 36 | #include "system/memory.h" |
| 37 | #include "qemu/error-report.h" |
| 38 | #include "xtensa_memory.h" |
| 39 | #include "xtensa_sim.h" |
| 40 | |
| 41 | static void create_pcie(MachineState *ms, CPUXtensaState *env, int irq_base, |
| 42 | hwaddr addr_base) |
| 43 | { |
| 44 | hwaddr base_ecam = addr_base + 0x00100000; |
| 45 | hwaddr size_ecam = 0x03f00000; |
| 46 | hwaddr base_pio = addr_base + 0x00000000; |
| 47 | hwaddr size_pio = 0x00010000; |
| 48 | hwaddr base_mmio = addr_base + 0x04000000; |
| 49 | hwaddr size_mmio = 0x08000000; |
| 50 | |
| 51 | MemoryRegion *ecam_alias; |
| 52 | MemoryRegion *ecam_reg; |
| 53 | MemoryRegion *pio_alias; |
| 54 | MemoryRegion *pio_reg; |
| 55 | MemoryRegion *mmio_alias; |
| 56 | MemoryRegion *mmio_reg; |
| 57 | |
| 58 | MachineClass *mc = MACHINE_GET_CLASS(ms); |
| 59 | DeviceState *dev; |
| 60 | PCIHostState *pci; |
| 61 | qemu_irq *extints; |
| 62 | int i; |
| 63 | |
| 64 | dev = qdev_new(TYPE_GPEX_HOST); |
| 65 | sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); |
| 66 | |
| 67 | /* Map only the first size_ecam bytes of ECAM space. */ |
| 68 | ecam_alias = g_new0(MemoryRegion, 1); |
| 69 | ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); |
| 70 | memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", |
| 71 | ecam_reg, 0, size_ecam); |
| 72 | memory_region_add_subregion(get_system_memory(), base_ecam, ecam_alias); |
| 73 | |
| 74 | /* |
| 75 | * Map the MMIO window into system address space so as to expose |
| 76 | * the section of PCI MMIO space which starts at the same base address |
| 77 | * (ie 1:1 mapping for that part of PCI MMIO space visible through |
| 78 | * the window). |
| 79 | */ |
| 80 | mmio_alias = g_new0(MemoryRegion, 1); |
| 81 | mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); |
| 82 | memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", |
| 83 | mmio_reg, base_mmio, size_mmio); |
| 84 | memory_region_add_subregion(get_system_memory(), base_mmio, mmio_alias); |
| 85 | |
| 86 | /* Map IO port space. */ |
| 87 | pio_alias = g_new0(MemoryRegion, 1); |
| 88 | pio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 2); |
| 89 | memory_region_init_alias(pio_alias, OBJECT(dev), "pcie-pio", |
| 90 | pio_reg, 0, size_pio); |
| 91 | memory_region_add_subregion(get_system_memory(), base_pio, pio_alias); |
| 92 | |
| 93 | /* Connect IRQ lines. */ |
| 94 | extints = xtensa_get_extints(env); |
| 95 | |
| 96 | for (i = 0; i < PCI_NUM_PINS; i++) { |
| 97 | void *q = extints[irq_base + i]; |
| 98 | |
| 99 | sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, q); |
| 100 | gpex_set_irq_num(GPEX_HOST(dev), i, irq_base + i); |
| 101 | } |
| 102 | |
| 103 | pci = PCI_HOST_BRIDGE(dev); |
| 104 | if (pci->bus) { |
| 105 | pci_init_nic_devices(pci->bus, mc->default_nic); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | static void xtensa_virt_init(MachineState *machine) |
| 110 | { |
| 111 | XtensaCPU *cpu = xtensa_sim_common_init(machine); |
| 112 | CPUXtensaState *env = &cpu->env; |
| 113 | |
| 114 | create_pcie(machine, env, 0, 0xf0000000); |
| 115 | xtensa_sim_load_kernel(cpu, machine); |
| 116 | } |
| 117 | |
| 118 | static void xtensa_virt_machine_init(MachineClass *mc) |
| 119 | { |
| 120 | mc->desc = "virt machine (" XTENSA_DEFAULT_CPU_MODEL ")"; |
| 121 | mc->init = xtensa_virt_init; |
| 122 | mc->max_cpus = 32; |
| 123 | mc->default_cpu_type = XTENSA_DEFAULT_CPU_TYPE; |
| 124 | mc->default_nic = "virtio-net-pci"; |
| 125 | } |
| 126 | |
| 127 | DEFINE_MACHINE("virt", xtensa_virt_machine_init) |