diff options
Diffstat (limited to 'src/VBox/Runtime/r0drv/solaris/alloc-r0drv-solaris.c')
| -rw-r--r-- | src/VBox/Runtime/r0drv/solaris/alloc-r0drv-solaris.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/solaris/alloc-r0drv-solaris.c b/src/VBox/Runtime/r0drv/solaris/alloc-r0drv-solaris.c new file mode 100644 index 00000000..9c0e9765 --- /dev/null +++ b/src/VBox/Runtime/r0drv/solaris/alloc-r0drv-solaris.c @@ -0,0 +1,198 @@ +/* $Id: alloc-r0drv-solaris.c $ */ +/** @file + * IPRT - Memory Allocation, Ring-0 Driver, Solaris. + */ + +/* + * Copyright (C) 2006-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "the-solaris-kernel.h" +#include "internal/iprt.h" +#include <iprt/mem.h> + +#include <iprt/assert.h> +#include <iprt/errcore.h> +#include <iprt/log.h> +#include <iprt/param.h> +#include <iprt/thread.h> +#include "r0drv/alloc-r0drv.h" + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +static ddi_dma_attr_t s_rtR0SolDmaAttr = +{ + DMA_ATTR_V0, /* Version Number */ + (uint64_t)0, /* Lower limit */ + (uint64_t)0, /* High limit */ + (uint64_t)0xffffffff, /* Counter limit */ + (uint64_t)PAGESIZE, /* Alignment */ + (uint64_t)PAGESIZE, /* Burst size */ + (uint64_t)PAGESIZE, /* Effective DMA size */ + (uint64_t)0xffffffff, /* Max DMA xfer size */ + (uint64_t)0xffffffff, /* Segment boundary */ + 1, /* Scatter-gather list length (1 for contiguous) */ + 1, /* Device granularity */ + 0 /* Bus-specific flags */ +}; + +extern void *contig_alloc(size_t cb, ddi_dma_attr_t *pDmaAttr, size_t uAlign, int fCanSleep); + + +/** + * OS specific allocation function. + */ +DECLHIDDEN(int) rtR0MemAllocEx(size_t cb, uint32_t fFlags, PRTMEMHDR *ppHdr) +{ + size_t cbAllocated = cb; + PRTMEMHDR pHdr; + unsigned fKmFlags = fFlags & RTMEMHDR_FLAG_ANY_CTX_ALLOC ? KM_NOSLEEP : KM_SLEEP; + if (fFlags & RTMEMHDR_FLAG_ZEROED) + pHdr = (PRTMEMHDR)kmem_zalloc(cb + sizeof(*pHdr), fKmFlags); + else + pHdr = (PRTMEMHDR)kmem_alloc(cb + sizeof(*pHdr), fKmFlags); + if (RT_UNLIKELY(!pHdr)) + { + LogRel(("rtMemAllocEx(%u, %#x) failed\n", (unsigned)cb + sizeof(*pHdr), fFlags)); + return VERR_NO_MEMORY; + } + + pHdr->u32Magic = RTMEMHDR_MAGIC; + pHdr->fFlags = fFlags; + pHdr->cb = cbAllocated; + pHdr->cbReq = cb; + + *ppHdr = pHdr; + return VINF_SUCCESS; +} + + +/** + * OS specific free function. + */ +DECLHIDDEN(void) rtR0MemFree(PRTMEMHDR pHdr) +{ + pHdr->u32Magic += 1; + kmem_free(pHdr, pHdr->cb + sizeof(*pHdr)); +} + + +/** + * Allocates physical memory which satisfy the given constraints. + * + * @param uPhysHi The upper physical address limit (inclusive). + * @param puPhys Where to store the physical address of the allocated + * memory. Optional, can be NULL. + * @param cb Size of allocation. + * @param uAlignment Alignment. + * @param fContig Whether the memory must be physically contiguous or + * not. + * @returns Virtual address of allocated memory block or NULL if allocation + * failed. + */ +DECLHIDDEN(void *) rtR0SolMemAlloc(uint64_t uPhysHi, uint64_t *puPhys, size_t cb, uint64_t uAlignment, bool fContig) +{ + if ((cb & PAGEOFFSET) != 0) + return NULL; + + size_t cPages = (cb + PAGESIZE - 1) >> PAGESHIFT; + if (!cPages) + return NULL; + + ddi_dma_attr_t DmaAttr = s_rtR0SolDmaAttr; + DmaAttr.dma_attr_addr_hi = uPhysHi; + DmaAttr.dma_attr_align = uAlignment; + if (!fContig) + DmaAttr.dma_attr_sgllen = cPages > INT_MAX ? INT_MAX - 1 : cPages; + else + AssertRelease(DmaAttr.dma_attr_sgllen == 1); + + void *pvMem = contig_alloc(cb, &DmaAttr, PAGESIZE, 1 /* can sleep */); + if (!pvMem) + { + LogRel(("rtR0SolMemAlloc failed. cb=%u Align=%u fContig=%d\n", (unsigned)cb, (unsigned)uAlignment, fContig)); + return NULL; + } + + pfn_t PageFrameNum = hat_getpfnum(kas.a_hat, (caddr_t)pvMem); + AssertRelease(PageFrameNum != PFN_INVALID); + if (puPhys) + *puPhys = (uint64_t)PageFrameNum << PAGESHIFT; + + return pvMem; +} + + +/** + * Frees memory allocated using rtR0SolMemAlloc(). + * + * @param pv The memory to free. + * @param cb Size of the memory block + */ +DECLHIDDEN(void) rtR0SolMemFree(void *pv, size_t cb) +{ + if (RT_LIKELY(pv)) + g_pfnrtR0Sol_contig_free(pv, cb); +} + + +RTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb) +{ + AssertPtrReturn(pPhys, NULL); + AssertReturn(cb > 0, NULL); + RT_ASSERT_PREEMPTIBLE(); + + /* Allocate physically contiguous (< 4GB) page-aligned memory. */ + uint64_t uPhys; + void *pvMem = rtR0SolMemAlloc((uint64_t)_4G - 1, &uPhys, cb, PAGESIZE, true /* fContig */); + if (RT_UNLIKELY(!pvMem)) + { + LogRel(("RTMemContAlloc failed to allocate %u bytes\n", cb)); + return NULL; + } + + Assert(uPhys < _4G); + *pPhys = uPhys; + return pvMem; +} + + +RTR0DECL(void) RTMemContFree(void *pv, size_t cb) +{ + RT_ASSERT_PREEMPTIBLE(); + rtR0SolMemFree(pv, cb); +} + |