Merge branch 'for-jeff' of git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux...

[safe/jmp/linux-2.6] / drivers / dma / ioatdma.h

diff --git a/drivers/dma/ioatdma.h b/drivers/dma/ioatdma.h
index d3643f2..a3306d0 100644 (file)
--- a/drivers/dma/ioatdma.h
+++ b/drivers/dma/ioatdma.h
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2004 - 2006 Intel Corporation. All rights reserved.
+ * Copyright(c) 2004 - 2007 Intel Corporation. All rights reserved.
  *
  * 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
@@ -27,8 +27,9 @@
 #include <linux/dmapool.h>
 #include <linux/cache.h>
 #include <linux/pci_ids.h>
+#include <net/tcp.h>
 
-#define IOAT_DMA_VERSION "1.26"
+#define IOAT_DMA_VERSION  "3.30"
 
 enum ioat_interrupt {
        none = 0,
@@ -39,6 +40,9 @@ enum ioat_interrupt {
 };
 
 #define IOAT_LOW_COMPLETION_MASK       0xffffffc0
+#define IOAT_DMA_DCA_ANY_CPU           ~0
+#define IOAT_WATCHDOG_PERIOD           (2 * HZ)
+
 
 /**
  * struct ioatdma_device - internal representation of a IOAT device
@@ -47,6 +51,9 @@ enum ioat_interrupt {
  * @dma_pool: for allocating DMA descriptors
  * @common: embedded struct dma_device
  * @version: version of ioatdma device
+ * @irq_mode: which style irq to use
+ * @msix_entries: irq handlers
+ * @idx: per channel data
  */
 
 struct ioatdma_device {
@@ -57,44 +64,36 @@ struct ioatdma_device {
        struct dma_device common;
        u8 version;
        enum ioat_interrupt irq_mode;
+       struct delayed_work work;
        struct msix_entry msix_entries[4];
        struct ioat_dma_chan *idx[4];
 };
 
 /**
  * struct ioat_dma_chan - internal representation of a DMA channel
- * @device:
- * @reg_base:
- * @sw_in_use:
- * @completion:
- * @completion_low:
- * @completion_high:
- * @completed_cookie: last cookie seen completed on cleanup
- * @cookie: value of last cookie given to client
- * @last_completion:
- * @xfercap:
- * @desc_lock:
- * @free_desc:
- * @used_desc:
- * @resource:
- * @device_node:
  */
-
 struct ioat_dma_chan {
 
        void __iomem *reg_base;
 
        dma_cookie_t completed_cookie;
        unsigned long last_completion;
+       unsigned long last_completion_time;
 
-       u32 xfercap;    /* XFERCAP register value expanded out */
+       size_t xfercap; /* XFERCAP register value expanded out */
 
        spinlock_t cleanup_lock;
        spinlock_t desc_lock;
        struct list_head free_desc;
        struct list_head used_desc;
+       unsigned long watchdog_completion;
+       int watchdog_tcp_cookie;
+       u32 watchdog_last_tcp_cookie;
+       struct delayed_work work;
 
        int pending;
+       int dmacount;
+       int desccount;
 
        struct ioatdma_device *device;
        struct dma_chan common;
@@ -107,6 +106,7 @@ struct ioat_dma_chan {
                        u32 high;
                };
        } *completion_virt;
+       unsigned long last_compl_desc_addr_hw;
        struct tasklet_struct cleanup_task;
 };
 
@@ -124,22 +124,40 @@ struct ioat_desc_sw {
        struct ioat_dma_descriptor *hw;
        struct list_head node;
        int tx_cnt;
-       DECLARE_PCI_UNMAP_LEN(len)
-       DECLARE_PCI_UNMAP_ADDR(src)
-       DECLARE_PCI_UNMAP_ADDR(dst)
+       size_t len;
+       dma_addr_t src;
+       dma_addr_t dst;
        struct dma_async_tx_descriptor async_tx;
 };
 
+static inline void ioat_set_tcp_copy_break(struct ioatdma_device *dev)
+{
+       #ifdef CONFIG_NET_DMA
+       switch (dev->version) {
+       case IOAT_VER_1_2:
+       case IOAT_VER_3_0:
+               sysctl_tcp_dma_copybreak = 4096;
+               break;
+       case IOAT_VER_2_0:
+               sysctl_tcp_dma_copybreak = 2048;
+               break;
+       }
+       #endif
+}
+
 #if defined(CONFIG_INTEL_IOATDMA) || defined(CONFIG_INTEL_IOATDMA_MODULE)
 struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev,
                                      void __iomem *iobase);
 void ioat_dma_remove(struct ioatdma_device *device);
-struct dca_provider *ioat_dca_init(struct pci_dev *pdev,
-                                  void __iomem *iobase);
+struct dca_provider *ioat_dca_init(struct pci_dev *pdev, void __iomem *iobase);
+struct dca_provider *ioat2_dca_init(struct pci_dev *pdev, void __iomem *iobase);
+struct dca_provider *ioat3_dca_init(struct pci_dev *pdev, void __iomem *iobase);
 #else
 #define ioat_dma_probe(pdev, iobase)    NULL
 #define ioat_dma_remove(device)         do { } while (0)
 #define ioat_dca_init(pdev, iobase)    NULL
+#define ioat2_dca_init(pdev, iobase)   NULL
+#define ioat3_dca_init(pdev, iobase)   NULL
 #endif
 
 #endif /* IOATDMA_H */