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| author | Suren A. Chilingaryan <csa@dside.dyndns.org> | 2013-06-20 19:15:55 +0200 |
|---|---|---|
| committer | Suren A. Chilingaryan <csa@dside.dyndns.org> | 2013-06-20 19:15:55 +0200 |
| commit | 7ec4581ad37b88bbb300ac00850603433a8cdfe9 (patch) | |
| tree | 6c78a5a4f876469226b54a9f9e4d7b749bebb3f9 /driver | |
| parent | 0444091c36134f176738393b659ea60e09dda423 (diff) | |
| download | pcitool-7ec4581ad37b88bbb300ac00850603433a8cdfe9.tar.gz pcitool-7ec4581ad37b88bbb300ac00850603433a8cdfe9.tar.bz2 pcitool-7ec4581ad37b88bbb300ac00850603433a8cdfe9.tar.xz pcitool-7ec4581ad37b88bbb300ac00850603433a8cdfe9.zip | |
Multipage DMA tests for Xilinx
Diffstat (limited to 'driver')
| -rw-r--r-- | driver/kmem.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/driver/kmem.c b/driver/kmem.c index 37a7368..ee64a78 100644 --- a/driver/kmem.c +++ b/driver/kmem.c @@ -130,23 +130,28 @@ int pcidriver_kmem_alloc(pcidriver_privdata_t *privdata, kmem_handle_t *kmem_han retptr = pci_alloc_consistent( privdata->pdev, kmem_handle->size, &(kmem_entry->dma_handle) ); break; case PCILIB_KMEM_TYPE_PAGE: - retptr = (void*)__get_free_pages(GFP_KERNEL, get_order(PAGE_SIZE)); + if (kmem_handle->size == 0) + kmem_handle->size = PAGE_SIZE; + else if (kmem_handle->size%PAGE_SIZE) + goto kmem_alloc_mem_fail; + + retptr = (void*)__get_free_pages(GFP_KERNEL|__GFP_DMA, get_order(kmem_handle->size)); kmem_entry->dma_handle = 0; - kmem_handle->size = PAGE_SIZE; + kmem_handle->size = kmem_handle->size; if (retptr) { if (kmem_entry->type == PCILIB_KMEM_TYPE_DMA_S2C_PAGE) { kmem_entry->direction = PCI_DMA_TODEVICE; - kmem_entry->dma_handle = pci_map_single(privdata->pdev, retptr, PAGE_SIZE, PCI_DMA_TODEVICE); + kmem_entry->dma_handle = pci_map_single(privdata->pdev, retptr, kmem_handle->size, PCI_DMA_TODEVICE); if (pci_dma_mapping_error(privdata->pdev, kmem_entry->dma_handle)) { - free_page((unsigned long)retptr); + free_pages((unsigned long)retptr, get_order(kmem_handle->size)); goto kmem_alloc_mem_fail; } } else if (kmem_entry->type == PCILIB_KMEM_TYPE_DMA_C2S_PAGE) { kmem_entry->direction = PCI_DMA_FROMDEVICE; - kmem_entry->dma_handle = pci_map_single(privdata->pdev, retptr, PAGE_SIZE, PCI_DMA_FROMDEVICE); + kmem_entry->dma_handle = pci_map_single(privdata->pdev, retptr, kmem_handle->size, PCI_DMA_FROMDEVICE); if (pci_dma_mapping_error(privdata->pdev, kmem_entry->dma_handle)) { - free_page((unsigned long)retptr); + free_pages((unsigned long)retptr, get_order(kmem_handle->size)); goto kmem_alloc_mem_fail; } @@ -435,7 +440,7 @@ int pcidriver_kmem_free_entry(pcidriver_privdata_t *privdata, pcidriver_kmem_ent pci_unmap_single(privdata->pdev, kmem_entry->dma_handle, kmem_entry->size, PCI_DMA_FROMDEVICE); } } - free_page((unsigned long)kmem_entry->cpua); + free_pages((unsigned long)kmem_entry->cpua, get_order(kmem_entry->size)); break; } |