#include "ehca_tools.h"
#include "ehca_qes.h"
+struct ehca_pd;
+struct ipz_small_queue_page;
+
+extern struct kmem_cache *small_qp_cache;
+
/* struct generic ehca page */
struct ipz_page {
u8 entries[EHCA_PAGESIZE];
};
+#define IPZ_SPAGE_PER_KPAGE (PAGE_SIZE / 512)
+
+struct ipz_small_queue_page {
+ unsigned long page;
+ unsigned long bitmap[IPZ_SPAGE_PER_KPAGE / BITS_PER_LONG];
+ int fill;
+ void *mapped_addr;
+ u32 mmap_count;
+ struct list_head list;
+};
+
/* struct generic queue in linux kernel virtual memory (kv) */
struct ipz_queue {
u64 current_q_offset; /* current queue entry */
u32 queue_length; /* queue length allocated in bytes */
u32 pagesize;
u32 toggle_state; /* toggle flag - per page */
- u32 dummy3; /* 64 bit alignment */
+ u32 offset; /* save offset within page for small_qp */
+ struct ipz_small_queue_page *small_page;
};
/*
* step in struct ipz_queue, will wrap in ringbuffer
* returns address (kv) of Queue Entry BEFORE increment
* warning don't use in parallel with ipz_qpageit_get_inc()
- * warning unpredictable results may occur if steps>act_nr_of_queue_entries
*/
static inline void *ipz_qeit_get_inc(struct ipz_queue *queue)
{
return ret;
}
+/*
+ * return a bool indicating whether current Queue Entry is valid
+ */
+static inline int ipz_qeit_is_valid(struct ipz_queue *queue)
+{
+ struct ehca_cqe *cqe = ipz_qeit_get(queue);
+ return ((cqe->cqe_flags >> 7) == (queue->toggle_state & 1));
+}
+
/*
* return current Queue Entry, increment Queue Entry iterator by one
* step in struct ipz_queue, will wrap in ringbuffer
* returns address (kv) of Queue Entry BEFORE increment
* returns 0 and does not increment, if wrong valid state
* warning don't use in parallel with ipz_qpageit_get_inc()
- * warning unpredictable results may occur if steps>act_nr_of_queue_entries
*/
static inline void *ipz_qeit_get_inc_valid(struct ipz_queue *queue)
{
- struct ehca_cqe *cqe = ipz_qeit_get(queue);
- u32 cqe_flags = cqe->cqe_flags;
-
- if ((cqe_flags >> 7) != (queue->toggle_state & 1))
- return NULL;
-
- ipz_qeit_get_inc(queue);
- return cqe;
-}
-
-static inline int ipz_qeit_is_valid(struct ipz_queue *queue)
-{
- struct ehca_cqe *cqe = ipz_qeit_get(queue);
- u32 cqe_flags = cqe->cqe_flags;
-
- return cqe_flags >> 7 == (queue->toggle_state & 1);
+ return ipz_qeit_is_valid(queue) ? ipz_qeit_get_inc(queue) : NULL;
}
/*
* see ipz_qpt_ctor()
* returns true if ok, false if out of memory
*/
-int ipz_queue_ctor(struct ipz_queue *queue, const u32 nr_of_pages,
- const u32 pagesize, const u32 qe_size,
- const u32 nr_of_sg);
+int ipz_queue_ctor(struct ehca_pd *pd, struct ipz_queue *queue,
+ const u32 nr_of_pages, const u32 pagesize,
+ const u32 qe_size, const u32 nr_of_sg,
+ int is_small);
/*
* destructor for a ipz_queue_t
* see ipz_queue_ctor()
* returns true if ok, false if queue was NULL-ptr of free failed
*/
-int ipz_queue_dtor(struct ipz_queue *queue);
+int ipz_queue_dtor(struct ehca_pd *pd, struct ipz_queue *queue);
/*
* constructor for a ipz_qpt_t,
static inline void *ipz_eqit_eq_get_inc_valid(struct ipz_queue *queue)
{
void *ret = ipz_qeit_get(queue);
- u32 qe = *(u8 *) ret;
+ u32 qe = *(u8 *)ret;
if ((qe >> 7) != (queue->toggle_state & 1))
return NULL;
ipz_qeit_eq_get_inc(queue); /* this is a good one */
static inline void *ipz_eqit_eq_peek_valid(struct ipz_queue *queue)
{
void *ret = ipz_qeit_get(queue);
- u32 qe = *(u8 *) ret;
+ u32 qe = *(u8 *)ret;
if ((qe >> 7) != (queue->toggle_state & 1))
return NULL;
return ret;