/* $OpenBSD: cn30xxfau.c,v 1.7 2022/12/28 01:39:21 yasuoka Exp $ */ /* * Copyright (c) 2007 Internet Initiative Japan, Inc. * All rights reserved. * * 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 AUTHORS 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 AUTHORS 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. */ #include #include #include #include #include int64_t cn30xxfau_op_load(uint64_t); void cn30xxfau_op_iobdma(int, uint64_t); void cn30xxfau_op_store(uint64_t, int64_t); int64_t cn30xxfau_op_load_paddr(int, int, int) __unused; void cn30xxfau_op_iobdma_store_data(int, int, int, int, int); void cn30xxfau_op_store_paddr(int, int, int64_t); /* ---- utilities */ int64_t cn30xxfau_op_load(uint64_t args) { paddr_t addr; addr = ((uint64_t)1 << 48) | ((uint64_t)(CN30XXFAU_MAJORDID & 0x1f) << 43) | ((uint64_t)(CN30XXFAU_SUBDID & 0x7) << 40) | ((uint64_t)(args & 0xfffffffffULL) << 0); return octeon_xkphys_read_8(addr); } void cn30xxfau_op_store(uint64_t args, int64_t value) { paddr_t addr; addr = ((uint64_t)1 << 48) | ((uint64_t)(CN30XXFAU_MAJORDID & 0x1f) << 43) | ((uint64_t)(CN30XXFAU_SUBDID & 0x7) << 40) | ((uint64_t)(args & 0xfffffffffULL) << 0); octeon_xkphys_write_8(addr, value); } /* ---- operation primitives */ /* * 3.4 Fetch-and-Add Operations */ /* 3.4.1 Load Operations */ /* Load Physical Address for FAU Operations */ int64_t cn30xxfau_op_load_paddr(int incval, int tagwait, int reg) { uint64_t args; args = ((uint64_t)(incval & 0x3fffff) << 14) | ((uint64_t)(tagwait & 0x1) << 13) | ((uint64_t)(reg & 0x7ff) << 0); return cn30xxfau_op_load(args); } /* 3.4.3 Store Operations */ /* Store Physical Address for FAU Operations */ void cn30xxfau_op_store_paddr(int noadd, int reg, int64_t value) { uint64_t args; args = ((uint64_t)(noadd & 0x1) << 13) | ((uint64_t)(reg & 0x7ff) << 0); cn30xxfau_op_store(args, value); } /* ---- API */ void cn30xxfau_op_init(struct cn30xxfau_desc *fd, size_t scroff, size_t regno) { fd->fd_scroff = scroff; fd->fd_regno = regno; } uint64_t cn30xxfau_op_save(struct cn30xxfau_desc *fd) { octeon_synciobdma(); return octeon_cvmseg_read_8(fd->fd_scroff); } void cn30xxfau_op_restore(struct cn30xxfau_desc *fd, uint64_t backup) { octeon_cvmseg_write_8(fd->fd_scroff, backup); } int64_t cn30xxfau_op_inc_8(struct cn30xxfau_desc *fd, int64_t v) { cn30xxfau_op_iobdma_store_data(fd->fd_scroff, v, 0, OCT_FAU_OP_SIZE_64/* XXX */, fd->fd_regno); octeon_synciobdma(); return octeon_cvmseg_read_8(fd->fd_scroff)/* XXX */; } int64_t cn30xxfau_op_incwait_8(struct cn30xxfau_desc *fd, int v) { cn30xxfau_op_iobdma_store_data(fd->fd_scroff, v, 1, OCT_FAU_OP_SIZE_64/* XXX */, fd->fd_regno); octeon_synciobdma(); return octeon_cvmseg_read_8(fd->fd_scroff)/* XXX */; } void cn30xxfau_op_add_8(struct cn30xxfau_desc *fd, int64_t v) { cn30xxfau_op_store_paddr(0, fd->fd_regno, v); } void cn30xxfau_op_set_8(struct cn30xxfau_desc *fd, int64_t v) { cn30xxfau_op_store_paddr(1, fd->fd_regno, v); }