include/hw/riscv/virt.h

   1 /*
   2  * QEMU RISC-V VirtIO machine interface
   3  *
   4  * Copyright (c) 2017 SiFive, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2 or later, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef HW_RISCV_VIRT_H
  20 #define HW_RISCV_VIRT_H
  21
  22 #include "hw/riscv/riscv_hart.h"
  23 #include "hw/sysbus.h"
  24 #include "hw/block/flash.h"
  25 #include "qom/object.h"
  26
  27 #define VIRT_CPUS_MAX_BITS             9
  28 #define VIRT_CPUS_MAX                  (1 << VIRT_CPUS_MAX_BITS)
  29 #define VIRT_SOCKETS_MAX_BITS          2
  30 #define VIRT_SOCKETS_MAX               (1 << VIRT_SOCKETS_MAX_BITS)
  31
  32 #define TYPE_RISCV_VIRT_MACHINE MACHINE_TYPE_NAME("virt")
  33 typedef struct RISCVVirtState RISCVVirtState;
  34 DECLARE_INSTANCE_CHECKER(RISCVVirtState, RISCV_VIRT_MACHINE,
  35                          TYPE_RISCV_VIRT_MACHINE)
  36
  37 typedef enum RISCVVirtAIAType {
  38     VIRT_AIA_TYPE_NONE = 0,
  39     VIRT_AIA_TYPE_APLIC,
  40     VIRT_AIA_TYPE_APLIC_IMSIC,
  41 } RISCVVirtAIAType;
  42
  43 struct RISCVVirtState {
  44     /*< private >*/
  45     MachineState parent;
  46
  47     /*< public >*/
  48     Notifier machine_done;
  49     DeviceState *platform_bus_dev;
  50     RISCVHartArrayState soc[VIRT_SOCKETS_MAX];
  51     DeviceState *irqchip[VIRT_SOCKETS_MAX];
  52     PFlashCFI01 *flash[2];
  53     FWCfgState *fw_cfg;
  54
  55     int fdt_size;
  56     bool have_aclint;
  57     RISCVVirtAIAType aia_type;
  58     int aia_guests;
  59 };
  60
  61 enum {
  62     VIRT_DEBUG,
  63     VIRT_MROM,
  64     VIRT_TEST,
  65     VIRT_RTC,
  66     VIRT_CLINT,
  67     VIRT_ACLINT_SSWI,
  68     VIRT_PLIC,
  69     VIRT_APLIC_M,
  70     VIRT_APLIC_S,
  71     VIRT_UART0,
  72     VIRT_VIRTIO,
  73     VIRT_FW_CFG,
  74     VIRT_IMSIC_M,
  75     VIRT_IMSIC_S,
  76     VIRT_FLASH,
  77     VIRT_DRAM,
  78     VIRT_PCIE_MMIO,
  79     VIRT_PCIE_PIO,
  80     VIRT_PLATFORM_BUS,
  81     VIRT_PCIE_ECAM
  82 };
  83
  84 enum {
  85     UART0_IRQ = 10,
  86     RTC_IRQ = 11,
  87     VIRTIO_IRQ = 1, /* 1 to 8 */
  88     VIRTIO_COUNT = 8,
  89     PCIE_IRQ = 0x20, /* 32 to 35 */
  90     VIRT_PLATFORM_BUS_IRQ = 64, /* 64 to 96 */
  91     VIRTIO_NDEV = 96 /* Arbitrary maximum number of interrupts */
  92 };
  93
  94 #define VIRT_PLATFORM_BUS_NUM_IRQS 32
  95
  96 #define VIRT_IRQCHIP_IPI_MSI 1
  97 #define VIRT_IRQCHIP_NUM_MSIS 255
  98 #define VIRT_IRQCHIP_NUM_SOURCES VIRTIO_NDEV
  99 #define VIRT_IRQCHIP_NUM_PRIO_BITS 3
 100 #define VIRT_IRQCHIP_MAX_GUESTS_BITS 3
 101 #define VIRT_IRQCHIP_MAX_GUESTS ((1U << VIRT_IRQCHIP_MAX_GUESTS_BITS) - 1U)
 102
 103 #define VIRT_PLIC_PRIORITY_BASE 0x04
 104 #define VIRT_PLIC_PENDING_BASE 0x1000
 105 #define VIRT_PLIC_ENABLE_BASE 0x2000
 106 #define VIRT_PLIC_ENABLE_STRIDE 0x80
 107 #define VIRT_PLIC_CONTEXT_BASE 0x200000
 108 #define VIRT_PLIC_CONTEXT_STRIDE 0x1000
 109 #define VIRT_PLIC_SIZE(__num_context) \
 110     (VIRT_PLIC_CONTEXT_BASE + (__num_context) * VIRT_PLIC_CONTEXT_STRIDE)
 111
 112 #define FDT_PCI_ADDR_CELLS    3
 113 #define FDT_PCI_INT_CELLS     1
 114 #define FDT_PLIC_INT_CELLS    1
 115 #define FDT_APLIC_INT_CELLS   2
 116 #define FDT_IMSIC_INT_CELLS   0
 117 #define FDT_MAX_INT_CELLS     2
 118 #define FDT_MAX_INT_MAP_WIDTH (FDT_PCI_ADDR_CELLS + FDT_PCI_INT_CELLS + \
 119                                  1 + FDT_MAX_INT_CELLS)
 120 #define FDT_PLIC_INT_MAP_WIDTH  (FDT_PCI_ADDR_CELLS + FDT_PCI_INT_CELLS + \
 121                                  1 + FDT_PLIC_INT_CELLS)
 122 #define FDT_APLIC_INT_MAP_WIDTH (FDT_PCI_ADDR_CELLS + FDT_PCI_INT_CELLS + \
 123                                  1 + FDT_APLIC_INT_CELLS)
 124
 125 #endif