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Diffstat (limited to 'drivers/infiniband/hw/hfi1/pio.h')
-rw-r--r--drivers/infiniband/hw/hfi1/pio.h38
1 files changed, 20 insertions, 18 deletions
diff --git a/drivers/infiniband/hw/hfi1/pio.h b/drivers/infiniband/hw/hfi1/pio.h
index e709eaf743b5..867e5ffc3595 100644
--- a/drivers/infiniband/hw/hfi1/pio.h
+++ b/drivers/infiniband/hw/hfi1/pio.h
@@ -83,53 +83,55 @@ struct pio_buf {
void *arg; /* argument for cb */
void __iomem *start; /* buffer start address */
void __iomem *end; /* context end address */
- unsigned long size; /* context size, in bytes */
unsigned long sent_at; /* buffer is sent when <= free */
- u32 block_count; /* size of buffer, in blocks */
- u32 qw_written; /* QW written so far */
- u32 carry_bytes; /* number of valid bytes in carry */
union mix carry; /* pending unwritten bytes */
+ u16 qw_written; /* QW written so far */
+ u8 carry_bytes; /* number of valid bytes in carry */
};
/* cache line aligned pio buffer array */
union pio_shadow_ring {
struct pio_buf pbuf;
- u64 unused[16]; /* cache line spacer */
} ____cacheline_aligned;
/* per-NUMA send context */
struct send_context {
/* read-only after init */
struct hfi1_devdata *dd; /* device */
- void __iomem *base_addr; /* start of PIO memory */
union pio_shadow_ring *sr; /* shadow ring */
+ void __iomem *base_addr; /* start of PIO memory */
+ u32 __percpu *buffers_allocated;/* count of buffers allocated */
+ u32 size; /* context size, in bytes */
- volatile __le64 *hw_free; /* HW free counter */
- struct work_struct halt_work; /* halted context work queue entry */
- unsigned long flags; /* flags */
int node; /* context home node */
- int type; /* context type */
- u32 sw_index; /* software index number */
- u32 hw_context; /* hardware context number */
- u32 credits; /* number of blocks in context */
u32 sr_size; /* size of the shadow ring */
- u32 group; /* credit return group */
+ u16 flags; /* flags */
+ u8 type; /* context type */
+ u8 sw_index; /* software index number */
+ u8 hw_context; /* hardware context number */
+ u8 group; /* credit return group */
+
/* allocator fields */
spinlock_t alloc_lock ____cacheline_aligned_in_smp;
+ u32 sr_head; /* shadow ring head */
unsigned long fill; /* official alloc count */
unsigned long alloc_free; /* copy of free (less cache thrash) */
- u32 sr_head; /* shadow ring head */
+ u32 fill_wrap; /* tracks fill within ring */
+ u32 credits; /* number of blocks in context */
+ /* adding a new field here would make it part of this cacheline */
+
/* releaser fields */
spinlock_t release_lock ____cacheline_aligned_in_smp;
- unsigned long free; /* official free count */
u32 sr_tail; /* shadow ring tail */
+ unsigned long free; /* official free count */
+ volatile __le64 *hw_free; /* HW free counter */
/* list for PIO waiters */
struct list_head piowait ____cacheline_aligned_in_smp;
spinlock_t credit_ctrl_lock ____cacheline_aligned_in_smp;
- u64 credit_ctrl; /* cache for credit control */
u32 credit_intr_count; /* count of credit intr users */
- u32 __percpu *buffers_allocated;/* count of buffers allocated */
+ u64 credit_ctrl; /* cache for credit control */
wait_queue_head_t halt_wait; /* wait until kernel sees interrupt */
+ struct work_struct halt_work; /* halted context work queue entry */
};
/* send context flags */