VirtualBox

source: vbox/trunk/src/VBox/Runtime/r0drv/solaris/alloc-r0drv-solaris.c@ 81106

Last change on this file since 81106 was 76553, checked in by vboxsync, 6 years ago

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File size: 6.7 KB
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1/* $Id: alloc-r0drv-solaris.c 76553 2019-01-01 01:45:53Z vboxsync $ */
2/** @file
3 * IPRT - Memory Allocation, Ring-0 Driver, Solaris.
4 */
5
6/*
7 * Copyright (C) 2006-2019 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include "the-solaris-kernel.h"
32#include "internal/iprt.h"
33#include <iprt/mem.h>
34
35#include <iprt/assert.h>
36#include <iprt/errcore.h>
37#include <iprt/log.h>
38#include <iprt/param.h>
39#include <iprt/thread.h>
40#include "r0drv/alloc-r0drv.h"
41
42
43/*********************************************************************************************************************************
44* Structures and Typedefs *
45*********************************************************************************************************************************/
46static ddi_dma_attr_t s_rtR0SolDmaAttr =
47{
48 DMA_ATTR_V0, /* Version Number */
49 (uint64_t)0, /* Lower limit */
50 (uint64_t)0, /* High limit */
51 (uint64_t)0xffffffff, /* Counter limit */
52 (uint64_t)PAGESIZE, /* Alignment */
53 (uint64_t)PAGESIZE, /* Burst size */
54 (uint64_t)PAGESIZE, /* Effective DMA size */
55 (uint64_t)0xffffffff, /* Max DMA xfer size */
56 (uint64_t)0xffffffff, /* Segment boundary */
57 1, /* Scatter-gather list length (1 for contiguous) */
58 1, /* Device granularity */
59 0 /* Bus-specific flags */
60};
61
62extern void *contig_alloc(size_t cb, ddi_dma_attr_t *pDmaAttr, size_t uAlign, int fCanSleep);
63
64
65/**
66 * OS specific allocation function.
67 */
68DECLHIDDEN(int) rtR0MemAllocEx(size_t cb, uint32_t fFlags, PRTMEMHDR *ppHdr)
69{
70 size_t cbAllocated = cb;
71 PRTMEMHDR pHdr;
72
73#ifdef RT_ARCH_AMD64
74 if (fFlags & RTMEMHDR_FLAG_EXEC)
75 {
76 AssertReturn(!(fFlags & RTMEMHDR_FLAG_ANY_CTX), VERR_NOT_SUPPORTED);
77 cbAllocated = RT_ALIGN_Z(cb + sizeof(*pHdr), PAGE_SIZE) - sizeof(*pHdr);
78 pHdr = (PRTMEMHDR)segkmem_alloc(heaptext_arena, cbAllocated + sizeof(*pHdr), KM_SLEEP);
79 }
80 else
81#endif
82 {
83 unsigned fKmFlags = fFlags & RTMEMHDR_FLAG_ANY_CTX_ALLOC ? KM_NOSLEEP : KM_SLEEP;
84 if (fFlags & RTMEMHDR_FLAG_ZEROED)
85 pHdr = (PRTMEMHDR)kmem_zalloc(cb + sizeof(*pHdr), fKmFlags);
86 else
87 pHdr = (PRTMEMHDR)kmem_alloc(cb + sizeof(*pHdr), fKmFlags);
88 }
89 if (RT_UNLIKELY(!pHdr))
90 {
91 LogRel(("rtMemAllocEx(%u, %#x) failed\n", (unsigned)cb + sizeof(*pHdr), fFlags));
92 return VERR_NO_MEMORY;
93 }
94
95 pHdr->u32Magic = RTMEMHDR_MAGIC;
96 pHdr->fFlags = fFlags;
97 pHdr->cb = cbAllocated;
98 pHdr->cbReq = cb;
99
100 *ppHdr = pHdr;
101 return VINF_SUCCESS;
102}
103
104
105/**
106 * OS specific free function.
107 */
108DECLHIDDEN(void) rtR0MemFree(PRTMEMHDR pHdr)
109{
110 pHdr->u32Magic += 1;
111#ifdef RT_ARCH_AMD64
112 if (pHdr->fFlags & RTMEMHDR_FLAG_EXEC)
113 segkmem_free(heaptext_arena, pHdr, pHdr->cb + sizeof(*pHdr));
114 else
115#endif
116 kmem_free(pHdr, pHdr->cb + sizeof(*pHdr));
117}
118
119
120/**
121 * Allocates physical memory which satisfy the given constraints.
122 *
123 * @param uPhysHi The upper physical address limit (inclusive).
124 * @param puPhys Where to store the physical address of the allocated
125 * memory. Optional, can be NULL.
126 * @param cb Size of allocation.
127 * @param uAlignment Alignment.
128 * @param fContig Whether the memory must be physically contiguous or
129 * not.
130 *
131 * @returns Virtual address of allocated memory block or NULL if allocation
132 * failed.
133 */
134DECLHIDDEN(void *) rtR0SolMemAlloc(uint64_t uPhysHi, uint64_t *puPhys, size_t cb, uint64_t uAlignment, bool fContig)
135{
136 if ((cb & PAGEOFFSET) != 0)
137 return NULL;
138
139 size_t cPages = (cb + PAGESIZE - 1) >> PAGESHIFT;
140 if (!cPages)
141 return NULL;
142
143 ddi_dma_attr_t DmaAttr = s_rtR0SolDmaAttr;
144 DmaAttr.dma_attr_addr_hi = uPhysHi;
145 DmaAttr.dma_attr_align = uAlignment;
146 if (!fContig)
147 DmaAttr.dma_attr_sgllen = cPages > INT_MAX ? INT_MAX - 1 : cPages;
148 else
149 AssertRelease(DmaAttr.dma_attr_sgllen == 1);
150
151 void *pvMem = contig_alloc(cb, &DmaAttr, PAGESIZE, 1 /* can sleep */);
152 if (!pvMem)
153 {
154 LogRel(("rtR0SolMemAlloc failed. cb=%u Align=%u fContig=%d\n", (unsigned)cb, (unsigned)uAlignment, fContig));
155 return NULL;
156 }
157
158 pfn_t PageFrameNum = hat_getpfnum(kas.a_hat, (caddr_t)pvMem);
159 AssertRelease(PageFrameNum != PFN_INVALID);
160 if (puPhys)
161 *puPhys = (uint64_t)PageFrameNum << PAGESHIFT;
162
163 return pvMem;
164}
165
166
167/**
168 * Frees memory allocated using rtR0SolMemAlloc().
169 *
170 * @param pv The memory to free.
171 * @param cb Size of the memory block
172 */
173DECLHIDDEN(void) rtR0SolMemFree(void *pv, size_t cb)
174{
175 if (RT_LIKELY(pv))
176 g_pfnrtR0Sol_contig_free(pv, cb);
177}
178
179
180RTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb)
181{
182 AssertPtrReturn(pPhys, NULL);
183 AssertReturn(cb > 0, NULL);
184 RT_ASSERT_PREEMPTIBLE();
185
186 /* Allocate physically contiguous (< 4GB) page-aligned memory. */
187 uint64_t uPhys;
188 void *pvMem = rtR0SolMemAlloc((uint64_t)_4G - 1, &uPhys, cb, PAGESIZE, true /* fContig */);
189 if (RT_UNLIKELY(!pvMem))
190 {
191 LogRel(("RTMemContAlloc failed to allocate %u bytes\n", cb));
192 return NULL;
193 }
194
195 Assert(uPhys < _4G);
196 *pPhys = uPhys;
197 return pvMem;
198}
199
200
201RTR0DECL(void) RTMemContFree(void *pv, size_t cb)
202{
203 RT_ASSERT_PREEMPTIBLE();
204 rtR0SolMemFree(pv, cb);
205}
206
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