ON-16264: Pass evq kernel virt address to enable evq

ef10ct and efct used 'phys_to_virt' on the evq dma_addrs to get the
kernel virtual address of the evq. This is not recommended for use on
physical addresses and not allowed for dma bus addresses. Instead,
pass through the virtual address of the evq backing memory we had
already.

src/include/ci/efhw/efhw_types.h

@@ -123,6 +123,8 @@ struct efhw_evq_params {
 	 * DMA mapped. Otherwise they are simply physical addresses.
 	 */
 	dma_addr_t* dma_addrs;
+	/* kernel virtual address pointing to same base as dma_addrs */
+	void *virt_base;
 	uint n_pages; /* number of entries in dma_addrs */
 	int wakeup_channel; /* irq or queue to deliver wakeups for this queue */
 	int flags;

src/lib/efhw/ef10ct/aux_ef10ct.c

@@ -195,6 +195,7 @@ static int ef10ct_nic_init_shared_evq(struct efhw_nic *nic, int qid)
   params.n_pages = 1 << page_order;
   params.evq_size = (params.n_pages << PAGE_SHIFT) / sizeof(efhw_event_t);
   params.dma_addrs = shared_evq->iopages.dma_addrs;
+  params.virt_base = shared_evq->iopages.ptr;
   /* Wakeup stuff is ignored */
   /* Do we care about flags? */
 

src/lib/efhw/ef10ct/ef10ct.c

@@ -304,7 +304,7 @@ ef10ct_nic_event_queue_enable(struct efhw_nic *nic,
 
   if( rc == 0 ) {
     ef10ct_evq->nic = nic;
-    ef10ct_evq->base = phys_to_virt(efhw_params->dma_addrs[0]);
+    ef10ct_evq->base = efhw_params->virt_base;
     ef10ct_evq->capacity = efhw_params->evq_size;
     atomic_set(&ef10ct_evq->queues_flushing, 0);
     INIT_DELAYED_WORK(&ef10ct_evq->check_flushes, ef10ct_check_for_flushes);

src/lib/efhw/efct.c

@@ -581,7 +581,7 @@ efct_nic_event_queue_enable(struct efhw_nic *nic,
 
   if( rc == 0 ) {
     efct_evq->nic = nic;
-    efct_evq->base = phys_to_virt(efhw_params->dma_addrs[0]);
+    efct_evq->base = efhw_params->virt_base;
     efct_evq->capacity = efhw_params->evq_size;
     atomic_set(&efct_evq->queues_flushing, 0);
     INIT_DELAYED_WORK(&efct_evq->check_flushes, efct_check_for_flushes);

src/lib/efrm/vi_resource_alloc.c

@@ -889,6 +889,7 @@ efrm_vi_rm_init_dmaq(struct efrm_vi *virs, enum efhw_q_type queue_type,
 		evq_params.evq = instance;
 		evq_params.evq_size = q->capacity;
 		evq_params.dma_addrs = q->dma_addrs;
+		evq_params.virt_base = q->host_pages.ptr;
 		evq_params.n_pages = (1 << q->host_page_order) *
 					EFHW_NIC_PAGES_IN_OS_PAGE;
 		evq_params.flags = flags;