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authorDan Williams <dan.j.williams@intel.com>2009-09-08 17:42:56 -0700
committerDan Williams <dan.j.williams@intel.com>2009-09-08 17:42:56 -0700
commit5669e31c5a4874f1634bc0ffba268a6e2fa0cdd2 (patch)
tree3ef3f6724e7a812ba83b420c3915c4a46762aeb7 /drivers/dma/ioat/dma.h
parentbf40a6869c9198bdf56fe173961feb89e9f0d961 (diff)
ioat: add 'ioat' sysfs attributes
Export driver attributes for diagnostic purposes: 'ring_size': total number of descriptors available to the engine 'ring_active': number of descriptors in-flight 'capabilities': supported operation types for this channel 'version': Intel(R) QuickData specfication revision This also allows some chattiness to be removed from the driver startup as this information is now available via sysfs. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ioat/dma.h')
-rw-r--r--drivers/dma/ioat/dma.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index c6d58bf541d..c2939b28918 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -92,6 +92,7 @@ struct ioat_chan_common {
#define IOAT_COMPLETION_PENDING 0
#define IOAT_COMPLETION_ACK 1
#define IOAT_RESET_PENDING 2
+ #define IOAT_KOBJ_INIT_FAIL 3
struct timer_list timer;
#define COMPLETION_TIMEOUT msecs_to_jiffies(100)
#define IDLE_TIMEOUT msecs_to_jiffies(2000)
@@ -100,8 +101,13 @@ struct ioat_chan_common {
dma_addr_t completion_dma;
u64 *completion;
struct tasklet_struct cleanup_task;
+ struct kobject kobj;
};
+struct ioat_sysfs_entry {
+ struct attribute attr;
+ ssize_t (*show)(struct dma_chan *, char *);
+};
/**
* struct ioat_dma_chan - internal representation of a DMA channel
@@ -117,6 +123,7 @@ struct ioat_dma_chan {
int pending;
u16 desccount;
+ u16 active;
};
static inline struct ioat_chan_common *to_chan_common(struct dma_chan *c)
@@ -319,4 +326,9 @@ void ioat_dma_unmap(struct ioat_chan_common *chan, enum dma_ctrl_flags flags,
size_t len, struct ioat_dma_descriptor *hw);
bool ioat_cleanup_preamble(struct ioat_chan_common *chan,
unsigned long *phys_complete);
+void ioat_kobject_add(struct ioatdma_device *device, struct kobj_type *type);
+void ioat_kobject_del(struct ioatdma_device *device);
+extern struct sysfs_ops ioat_sysfs_ops;
+extern struct ioat_sysfs_entry ioat_version_attr;
+extern struct ioat_sysfs_entry ioat_cap_attr;
#endif /* IOATDMA_H */