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Diffstat (limited to 'sys/riscv/htif/htif.h')
| -rw-r--r-- | sys/riscv/htif/htif.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/sys/riscv/htif/htif.h b/sys/riscv/htif/htif.h new file mode 100644 index 0000000..a1183d9 --- /dev/null +++ b/sys/riscv/htif/htif.h @@ -0,0 +1,93 @@ +/*- + * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> + * All rights reserved. + * + * Portions of this software were developed by SRI International and the + * University of Cambridge Computer Laboratory under DARPA/AFRL contract + * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. + * + * Portions of this software were developed by the University of Cambridge + * Computer Laboratory as part of the CTSRD Project, with support from the + * UK Higher Education Innovation Fund (HEIF). + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#define HTIF_DEV_ID_SHIFT (56) +#define HTIF_DEV_ID_MASK (0xfful << HTIF_DEV_ID_SHIFT) +#define HTIF_CMD_SHIFT (48) +#define HTIF_CMD_MASK (0xfful << HTIF_CMD_SHIFT) +#define HTIF_DATA_SHIFT (0) +#define HTIF_DATA_MASK (0xffffffff << HTIF_DATA_SHIFT) + +#define HTIF_CMD_READ (0x00ul) +#define HTIF_CMD_WRITE (0x01ul) +#define HTIF_CMD_READ_CONTROL_REG (0x02ul) +#define HTIF_CMD_WRITE_CONTROL_REG (0x03ul) +#define HTIF_CMD_IDENTIFY (0xfful) +#define IDENTIFY_PADDR_SHIFT 8 +#define IDENTIFY_IDENT 0xff + +#define HTIF_NDEV (256) +#define HTIF_ID_LEN (64) +#define HTIF_ALIGN (64) + +#define HTIF_DEV_CMD(entry) ((entry & HTIF_CMD_MASK) >> HTIF_CMD_SHIFT) +#define HTIF_DEV_ID(entry) ((entry & HTIF_DEV_ID_MASK) >> HTIF_DEV_ID_SHIFT) +#define HTIF_DEV_DATA(entry) ((entry & HTIF_DATA_MASK) >> HTIF_DATA_SHIFT) + +/* bus softc */ +struct htif_softc { + struct resource *res[1]; + void *ihl[1]; + device_t dev; + uint64_t identify_id; + uint64_t identify_done; +}; + +/* device private data */ +struct htif_dev_ivars { + char *id; + int index; + device_t dev; + struct htif_softc *sc; +}; + +uint64_t htif_command(uint64_t); +int htif_setup_intr(int id, void *func, void *arg); +int htif_read_ivar(device_t dev, device_t child, int which, uintptr_t *result); + +enum htif_device_ivars { + HTIF_IVAR_INDEX, + HTIF_IVAR_ID, +}; + +/* + * Simplified accessors for HTIF devices + */ +#define HTIF_ACCESSOR(var, ivar, type) \ + __BUS_ACCESSOR(htif, var, HTIF, ivar, type) + +HTIF_ACCESSOR(index, INDEX, int); +HTIF_ACCESSOR(id, ID, char *); |
