I/OAT: I/OAT version 3.0 support

This patch adds to ioatdma and dca modules
support for Intel I/OAT DMA engine ver.3 (aka CB3 device).
The main features of I/OAT ver.3 are:
 * 8 single channel DMA devices (8 channels total)
 * 8 DCA providers, each can accept 2 requesters
 * 8-bit TAG values and 32-bit extended APIC IDs

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

2 files changed, 14 insertions, 1 deletions

diff --git a/include/linux/dca.h b/include/linux/dca.h
index af61cd1f37e9..b00a753eda53 100644
--- a/include/linux/dca.h
+++ b/include/linux/dca.h
@@ -10,6 +10,7 @@ void dca_unregister_notify(struct notifier_block *nb);
 #define DCA_PROVIDER_REMOVE  0x0002
 
 struct dca_provider {
+        struct list_head        node;
         struct dca_ops          *ops;
         struct device           *cd;
         int                      id;
@@ -18,7 +19,9 @@ struct dca_provider {
 struct dca_ops {
         int     (*add_requester)    (struct dca_provider *, struct device *);
         int     (*remove_requester) (struct dca_provider *, struct device *);
-        u8      (*get_tag)          (struct dca_provider *, int cpu);
+        u8      (*get_tag)          (struct dca_provider *, struct device *,
+                                     int cpu);
+        int     (*dev_managed)      (struct dca_provider *, struct device *);
 };
 
 struct dca_provider *alloc_dca_provider(struct dca_ops *ops, int priv_size);
@@ -32,9 +35,11 @@ static inline void *dca_priv(struct dca_provider *dca)
 }
 
 /* Requester API */
+#define DCA_GET_TAG_TWO_ARGS
 int dca_add_requester(struct device *dev);
 int dca_remove_requester(struct device *dev);
 u8 dca_get_tag(int cpu);
+u8 dca3_get_tag(struct device *dev, int cpu);
 
 /* internal stuff */
 int __init dca_sysfs_init(void);
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 9b940e644179..06a5b7ae79be 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2363,6 +2363,14 @@
 #define PCI_DEVICE_ID_INTEL_ICH9_7      0x2916
 #define PCI_DEVICE_ID_INTEL_ICH9_8      0x2918
 #define PCI_DEVICE_ID_INTEL_82855PM_HB  0x3340
+#define PCI_DEVICE_ID_INTEL_IOAT_TBG4   0x3429
+#define PCI_DEVICE_ID_INTEL_IOAT_TBG5   0x342a
+#define PCI_DEVICE_ID_INTEL_IOAT_TBG6   0x342b
+#define PCI_DEVICE_ID_INTEL_IOAT_TBG7   0x342c
+#define PCI_DEVICE_ID_INTEL_IOAT_TBG0   0x3430
+#define PCI_DEVICE_ID_INTEL_IOAT_TBG1   0x3431
+#define PCI_DEVICE_ID_INTEL_IOAT_TBG2   0x3432
+#define PCI_DEVICE_ID_INTEL_IOAT_TBG3   0x3433
 #define PCI_DEVICE_ID_INTEL_82830_HB    0x3575
 #define PCI_DEVICE_ID_INTEL_82830_CGC   0x3577
 #define PCI_DEVICE_ID_INTEL_82855GM_HB  0x3580