include/hw/riscv/sifive_clint.h

   1 /*
   2  * SiFive CLINT (Core Local Interruptor) interface
   3  *
   4  * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
   5  * Copyright (c) 2017 SiFive, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms and conditions of the GNU General Public License,
   9  * version 2 or later, as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef HW_SIFIVE_CLINT_H
  21 #define HW_SIFIVE_CLINT_H
  22
  23 #define TYPE_SIFIVE_CLINT "riscv.sifive.clint"
  24
  25 #define SIFIVE_CLINT(obj) \
  26     OBJECT_CHECK(SiFiveCLINTState, (obj), TYPE_SIFIVE_CLINT)
  27
  28 typedef struct SiFiveCLINTState {
  29     /*< private >*/
  30     SysBusDevice parent_obj;
  31
  32     /*< public >*/
  33     MemoryRegion mmio;
  34     uint32_t num_harts;
  35     uint32_t sip_base;
  36     uint32_t timecmp_base;
  37     uint32_t time_base;
  38     uint32_t aperture_size;
  39 } SiFiveCLINTState;
  40
  41 DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, uint32_t num_harts,
  42     uint32_t sip_base, uint32_t timecmp_base, uint32_t time_base);
  43
  44 enum {
  45     SIFIVE_SIP_BASE     = 0x0,
  46     SIFIVE_TIMECMP_BASE = 0x4000,
  47     SIFIVE_TIME_BASE    = 0xBFF8
  48 };
  49
  50 enum {
  51     SIFIVE_CLINT_TIMEBASE_FREQ = 10000000
  52 };
  53
  54 #endif