1 files changed, 51 insertions, 2 deletions

diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 53a4cbb78f47..54fb7b9ff9aa 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -39,6 +39,7 @@
 #define to_ioat_desc(lh) container_of(lh, struct ioat_desc_sw, node)
 #define tx_to_ioat_desc(tx) container_of(tx, struct ioat_desc_sw, txd)
 #define to_dev(ioat_chan) (&(ioat_chan)->device->pdev->dev)
+#define to_pdev(ioat_chan) ((ioat_chan)->device->pdev)
 
 #define chan_num(ch) ((int)((ch)->reg_base - (ch)->device->reg_base) / 0x80)
 
@@ -48,6 +49,14 @@
  */
 #define NULL_DESC_BUFFER_SIZE 1
 
+enum ioat_irq_mode {
+        IOAT_NOIRQ = 0,
+        IOAT_MSIX,
+        IOAT_MSIX_SINGLE,
+        IOAT_MSI,
+        IOAT_INTX
+};
+
 /**
  * struct ioatdma_device - internal representation of a IOAT device
  * @pdev: PCI-Express device
@@ -72,11 +81,16 @@ struct ioatdma_device {
         void __iomem *reg_base;
         struct pci_pool *dma_pool;
         struct pci_pool *completion_pool;
+#define MAX_SED_POOLS   5
+        struct dma_pool *sed_hw_pool[MAX_SED_POOLS];
+        struct kmem_cache *sed_pool;
         struct dma_device common;
         u8 version;
         struct msix_entry msix_entries[4];
         struct ioat_chan_common *idx[4];
         struct dca_provider *dca;
+        enum ioat_irq_mode irq_mode;
+        u32 cap;
         void (*intr_quirk)(struct ioatdma_device *device);
         int (*enumerate_channels)(struct ioatdma_device *device);
         int (*reset_hw)(struct ioat_chan_common *chan);
@@ -131,6 +145,20 @@ struct ioat_dma_chan {
         u16 active;
 };
 
+/**
+ * struct ioat_sed_ent - wrapper around super extended hardware descriptor
+ * @hw: hardware SED
+ * @sed_dma: dma address for the SED
+ * @list: list member
+ * @parent: point to the dma descriptor that's the parent
+ */
+struct ioat_sed_ent {
+        struct ioat_sed_raw_descriptor *hw;
+        dma_addr_t dma;
+        struct ioat_ring_ent *parent;
+        unsigned int hw_pool;
+};
+
 static inline struct ioat_chan_common *to_chan_common(struct dma_chan *c)
 {
         return container_of(c, struct ioat_chan_common, common);
@@ -179,7 +207,7 @@ __dump_desc_dbg(struct ioat_chan_common *chan, struct ioat_dma_descriptor *hw,
         struct device *dev = to_dev(chan);
 
         dev_dbg(dev, "desc[%d]: (%#llx->%#llx) cookie: %d flags: %#x"
-                " ctl: %#x (op: %d int_en: %d compl: %d)\n", id,
+                " ctl: %#10.8x (op: %#x int_en: %d compl: %d)\n", id,
                 (unsigned long long) tx->phys,
                 (unsigned long long) hw->next, tx->cookie, tx->flags,
                 hw->ctl, hw->ctl_f.op, hw->ctl_f.int_en, hw->ctl_f.compl_write);
@@ -201,7 +229,7 @@ ioat_chan_by_index(struct ioatdma_device *device, int index)
         return device->idx[index];
 }
 
-static inline u64 ioat_chansts(struct ioat_chan_common *chan)
+static inline u64 ioat_chansts_32(struct ioat_chan_common *chan)
 {
         u8 ver = chan->device->version;
         u64 status;
@@ -218,6 +246,26 @@ static inline u64 ioat_chansts(struct ioat_chan_common *chan)
         return status;
 }
 
+#if BITS_PER_LONG == 64
+
+static inline u64 ioat_chansts(struct ioat_chan_common *chan)
+{
+        u8 ver = chan->device->version;
+        u64 status;
+
+         /* With IOAT v3.3 the status register is 64bit.  */
+        if (ver >= IOAT_VER_3_3)
+                status = readq(chan->reg_base + IOAT_CHANSTS_OFFSET(ver));
+        else
+                status = ioat_chansts_32(chan);
+
+        return status;
+}
+
+#else
+#define ioat_chansts ioat_chansts_32
+#endif
+
 static inline void ioat_start(struct ioat_chan_common *chan)
 {
         u8 ver = chan->device->version;
@@ -321,6 +369,7 @@ bool ioat_cleanup_preamble(struct ioat_chan_common *chan,
                            dma_addr_t *phys_complete);
 void ioat_kobject_add(struct ioatdma_device *device, struct kobj_type *type);
 void ioat_kobject_del(struct ioatdma_device *device);
+int ioat_dma_setup_interrupts(struct ioatdma_device *device);
 extern const struct sysfs_ops ioat_sysfs_ops;
 extern struct ioat_sysfs_entry ioat_version_attr;
 extern struct ioat_sysfs_entry ioat_cap_attr;