Merge branch 'topic/pcm-mmap-cleanup' into for-next
This drags a few post-3.18 mmap fixes, a cleanup of dma_mmap_coherent() usages and additional fixups for some architectures.
This commit is contained in:
commit
8057727087
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@ -35,9 +35,6 @@
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#include <sound/timer.h>
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#include <sound/minors.h>
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#include <asm/io.h>
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#if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
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#include <dma-coherence.h>
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#endif
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/*
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* Compatibility
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@ -195,6 +192,21 @@ int snd_pcm_info_user(struct snd_pcm_substream *substream,
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return err;
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}
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static bool hw_support_mmap(struct snd_pcm_substream *substream)
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{
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if (!(substream->runtime->hw.info & SNDRV_PCM_INFO_MMAP))
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return false;
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/* check architectures that return -EINVAL from dma_mmap_coherent() */
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/* FIXME: this should be some global flag */
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#if defined(CONFIG_C6X) || defined(CONFIG_FRV) || defined(CONFIG_MN10300) ||\
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defined(CONFIG_PARISC) || defined(CONFIG_XTENSA)
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if (!substream->ops->mmap &&
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substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
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return false;
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#endif
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return true;
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}
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#undef RULES_DEBUG
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#ifdef RULES_DEBUG
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@ -372,8 +384,12 @@ int snd_pcm_hw_refine(struct snd_pcm_substream *substream,
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}
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hw = &substream->runtime->hw;
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if (!params->info)
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if (!params->info) {
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params->info = hw->info & ~SNDRV_PCM_INFO_FIFO_IN_FRAMES;
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if (!hw_support_mmap(substream))
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params->info &= ~(SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID);
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}
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if (!params->fifo_size) {
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m = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
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i = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
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@ -2072,7 +2088,7 @@ int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
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mask |= 1 << SNDRV_PCM_ACCESS_RW_INTERLEAVED;
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if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED)
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mask |= 1 << SNDRV_PCM_ACCESS_RW_NONINTERLEAVED;
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if (hw->info & SNDRV_PCM_INFO_MMAP) {
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if (hw_support_mmap(substream)) {
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if (hw->info & SNDRV_PCM_INFO_INTERLEAVED)
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mask |= 1 << SNDRV_PCM_ACCESS_MMAP_INTERLEAVED;
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if (hw->info & SNDRV_PCM_INFO_NONINTERLEAVED)
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@ -3251,20 +3267,6 @@ static inline struct page *
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snd_pcm_default_page_ops(struct snd_pcm_substream *substream, unsigned long ofs)
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{
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void *vaddr = substream->runtime->dma_area + ofs;
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#if defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
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if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
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return virt_to_page(CAC_ADDR(vaddr));
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#endif
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#if defined(CONFIG_PPC32) && defined(CONFIG_NOT_COHERENT_CACHE)
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if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV) {
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dma_addr_t addr = substream->runtime->dma_addr + ofs;
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addr -= get_dma_offset(substream->dma_buffer.dev.dev);
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/* assume dma_handle set via pfn_to_phys() in
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* mm/dma-noncoherent.c
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*/
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return pfn_to_page(addr >> PAGE_SHIFT);
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}
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#endif
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return virt_to_page(vaddr);
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}
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@ -3309,13 +3311,6 @@ static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = {
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.fault = snd_pcm_mmap_data_fault,
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};
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#ifndef ARCH_HAS_DMA_MMAP_COHERENT
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/* This should be defined / handled globally! */
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#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
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#define ARCH_HAS_DMA_MMAP_COHERENT
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#endif
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#endif
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/*
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* mmap the DMA buffer on RAM
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*/
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@ -3331,7 +3326,6 @@ int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
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area->vm_end - area->vm_start, area->vm_page_prot);
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}
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#endif /* CONFIG_GENERIC_ALLOCATOR */
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#ifdef ARCH_HAS_DMA_MMAP_COHERENT
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if (!substream->ops->page &&
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substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV)
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return dma_mmap_coherent(substream->dma_buffer.dev.dev,
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@ -3339,11 +3333,6 @@ int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
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substream->runtime->dma_area,
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substream->runtime->dma_addr,
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area->vm_end - area->vm_start);
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#elif defined(CONFIG_MIPS) && defined(CONFIG_DMA_NONCOHERENT)
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if (substream->dma_buffer.dev.type == SNDRV_DMA_TYPE_DEV &&
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!plat_device_is_coherent(substream->dma_buffer.dev.dev))
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area->vm_page_prot = pgprot_noncached(area->vm_page_prot);
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#endif /* ARCH_HAS_DMA_MMAP_COHERENT */
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/* mmap with fault handler */
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area->vm_ops = &snd_pcm_vm_ops_data_fault;
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return 0;
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