Merge tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine updates from Vinod Koul:
 "This is bit large pile of code which bring in some nice additions:

   - Error reporting: we have added a new mechanism for users of
     dmaenegine to register a callback_result which tells them the
     result of the dma transaction. Right now only one user (ntb) is
     using it.

   - As we discussed on KS mailing list and pointed out NO_IRQ has no
     place in kernel, this also remove NO_IRQ from dmaengine subsystem
     (both arm and ppc users)

   - Support for IOMMU slave transfers and its implementation for arm.

   - To get better build coverage, enable COMPILE_TEST for bunch of
     driver, and fix the warning and sparse complaints on these.

   - Apart from above, usual updates spread across drivers"

* tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (169 commits)
  async_pq_val: fix DMA memory leak
  dmaengine: virt-dma: move function declarations
  dmaengine: omap-dma: Enable burst and data pack for SG
  DT: dmaengine: rcar-dmac: document R8A7743/5 support
  dmaengine: fsldma: Unmap region obtained by of_iomap
  dmaengine: jz4780: fix resource leaks on error exit return
  dma-debug: fix ia64 build, use PHYS_PFN
  dmaengine: coh901318: fix integer overflow when shifting more than 32 places
  dmaengine: edma: avoid uninitialized variable use
  dma-mapping: fix m32r build warning
  dma-mapping: fix ia64 build, use PHYS_PFN
  dmaengine: ti-dma-crossbar: enable COMPILE_TEST
  dmaengine: omap-dma: enable COMPILE_TEST
  dmaengine: edma: enable COMPILE_TEST
  dmaengine: ti-dma-crossbar: Fix of_device_id data parameter usage
  dmaengine: ti-dma-crossbar: Correct type for of_find_property() third parameter
  dmaengine/ARM: omap-dma: Fix the DMAengine compile test on non OMAP configs
  dmaengine: edma: Rename set_bits and remove unused clear_bits helper
  dmaengine: edma: Use correct type for of_find_property() third parameter
  dmaengine: edma: Fix of_device_id data parameter usage (legacy vs TPCC)
  ...

1 files changed, 50 insertions, 2 deletions

diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 06f02f6aecd2..8971370bfb16 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -44,6 +44,7 @@ enum {
         dma_debug_page,
         dma_debug_sg,
         dma_debug_coherent,
+        dma_debug_resource,
 };
 
 enum map_err_types {
@@ -151,8 +152,9 @@ static const char *const maperr2str[] = {
         [MAP_ERR_CHECKED] = "dma map error checked",
 };
 
-static const char *type2name[4] = { "single", "page",
-                                    "scather-gather", "coherent" };
+static const char *type2name[5] = { "single", "page",
+                                    "scather-gather", "coherent",
+                                    "resource" };
 
 static const char *dir2name[4] = { "DMA_BIDIRECTIONAL", "DMA_TO_DEVICE",
                                    "DMA_FROM_DEVICE", "DMA_NONE" };
@@ -400,6 +402,9 @@ static void hash_bucket_del(struct dma_debug_entry *entry)
 
 static unsigned long long phys_addr(struct dma_debug_entry *entry)
 {
+        if (entry->type == dma_debug_resource)
+                return __pfn_to_phys(entry->pfn) + entry->offset;
+
         return page_to_phys(pfn_to_page(entry->pfn)) + entry->offset;
 }
 
@@ -1519,6 +1524,49 @@ void debug_dma_free_coherent(struct device *dev, size_t size,
 }
 EXPORT_SYMBOL(debug_dma_free_coherent);
 
+void debug_dma_map_resource(struct device *dev, phys_addr_t addr, size_t size,
+                            int direction, dma_addr_t dma_addr)
+{
+        struct dma_debug_entry *entry;
+
+        if (unlikely(dma_debug_disabled()))
+                return;
+
+        entry = dma_entry_alloc();
+        if (!entry)
+                return;
+
+        entry->type             = dma_debug_resource;
+        entry->dev              = dev;
+        entry->pfn              = PHYS_PFN(addr);
+        entry->offset           = offset_in_page(addr);
+        entry->size             = size;
+        entry->dev_addr         = dma_addr;
+        entry->direction        = direction;
+        entry->map_err_type     = MAP_ERR_NOT_CHECKED;
+
+        add_dma_entry(entry);
+}
+EXPORT_SYMBOL(debug_dma_map_resource);
+
+void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr,
+                              size_t size, int direction)
+{
+        struct dma_debug_entry ref = {
+                .type           = dma_debug_resource,
+                .dev            = dev,
+                .dev_addr       = dma_addr,
+                .size           = size,
+                .direction      = direction,
+        };
+
+        if (unlikely(dma_debug_disabled()))
+                return;
+
+        check_unmap(&ref);
+}
+EXPORT_SYMBOL(debug_dma_unmap_resource);
+
 void debug_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
                                    size_t size, int direction)
 {