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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | /* * Various wrappers * Copyright (c) by Jaroslav Kysela <perex@suse.cz> * * * 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; either version 2 of the License, or * (at your option) any later version. * * 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #ifdef ALSA_BUILD #include "config.h" #endif #include <linux/version.h> #include <linux/config.h> #ifdef ALSA_BUILD #if defined(CONFIG_MODVERSIONS) && !defined(__GENKSYMS__) && !defined(__DEPEND__) #define MODVERSIONS #include <linux/modversions.h> #include "sndversions.h" #endif #endif #include <linux/module.h> #include <linux/slab.h> #include <linux/ioport.h> #include <linux/vmalloc.h> #include <linux/fs.h> #ifdef CONFIG_SND_DEBUG_MEMORY void *snd_wrapper_kmalloc(size_t size, int flags) { return kmalloc(size, flags); } void snd_wrapper_kfree(const void *obj) { kfree(obj); } void *snd_wrapper_vmalloc(unsigned long size) { return vmalloc(size); } void snd_wrapper_vfree(void *obj) { vfree(obj); } #endif /* check the condition in <sound/core.h> !! */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 4, 0) #if defined(__i386__) || defined(__ppc__) || defined(__x86_64__) #include <linux/pci.h> /* to be sure... */ #ifdef HACK_PCI_ALLOC_CONSISTENT #error pci_alloc_consistent hack is already defined!! #endif /* * A dirty hack... when the kernel code is fixed this should be removed. * * since pci_alloc_consistent always tries GFP_DMA when the requested * pci memory region is below 32bit, it happens quite often that even * 2 order of pages cannot be allocated. * * so in the following, we allocate at first without dma_mask, so that * allocation will be done without GFP_DMA. if the area doesn't match * with the requested region, then realloate with the original dma_mask * again. */ void *snd_pci_hack_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle) { void *ret; u64 dma_mask; unsigned long rmask; if (hwdev == NULL) return pci_alloc_consistent(hwdev, size, dma_handle); dma_mask = hwdev->dma_mask; rmask = ~((unsigned long)dma_mask); hwdev->dma_mask = 0xffffffff; /* do without masking */ ret = pci_alloc_consistent(hwdev, size, dma_handle); hwdev->dma_mask = dma_mask; /* restore */ if (ret) { /* obtained address is out of range? */ if (((unsigned long)*dma_handle + size - 1) & rmask) { /* reallocate with the proper mask */ pci_free_consistent(hwdev, size, ret, *dma_handle); ret = pci_alloc_consistent(hwdev, size, dma_handle); } } else { /* wish to success now with the proper mask... */ if (dma_mask != 0xffffffff) ret = pci_alloc_consistent(hwdev, size, dma_handle); } return ret; } #endif #endif |