298 	struct devmap_ctx	*devctx;  in devmap_ctxinit()  local
310 	for (devctx = devmapctx_list; devctx != NULL; devctx = devctx->next)  in devmap_ctxinit()
311 		if ((devctx->dip == dip) && (devctx->id == id))  in devmap_ctxinit()
314 	if (devctx == NULL) {  in devmap_ctxinit()
315 		devctx = tmp;  in devmap_ctxinit()
316 		devctx->dip = dip;  in devmap_ctxinit()
317 		devctx->id = id;  in devmap_ctxinit()
318 		mutex_init(&devctx->lock, NULL, MUTEX_DEFAULT, NULL);  in devmap_ctxinit()
319 		cv_init(&devctx->cv, NULL, CV_DEFAULT, NULL);  in devmap_ctxinit()
320 		devctx->next = devmapctx_list;  in devmap_ctxinit()
321 		devmapctx_list = devctx;  in devmap_ctxinit()
325 	mutex_enter(&devctx->lock);  in devmap_ctxinit()
326 	devctx->refcnt++;  in devmap_ctxinit()
327 	mutex_exit(&devctx->lock);  in devmap_ctxinit()
330 	return (devctx);  in devmap_ctxinit()
340 	struct devmap_ctx *devctx = data;  in devmap_ctxto()  local
343 	    "devmap_ctxto:timeout expired, devctx=%p", (void *)devctx);  in devmap_ctxto()
344 	mutex_enter(&devctx->lock);  in devmap_ctxto()
349 	devctx->oncpu = 0;  in devmap_ctxto()
350 	devctx->timeout = 0;  in devmap_ctxto()
351 	cv_signal(&devctx->cv);  in devmap_ctxto()
352 	mutex_exit(&devctx->lock);  in devmap_ctxto()
2593 	struct devmap_ctx *devctx;  in devmap_do_ctxmgt()  local
2610 	devctx = dhp->dh_ctx;  in devmap_do_ctxmgt()
2626 		    devctx, dhp);  in devmap_do_ctxmgt()
2628 		mutex_enter(&devctx->lock);  in devmap_do_ctxmgt()
2629 		while (devctx->oncpu)  in devmap_do_ctxmgt()
2630 			cv_wait(&devctx->cv, &devctx->lock);  in devmap_do_ctxmgt()
2631 		devctx->oncpu = 1;  in devmap_do_ctxmgt()
2632 		mutex_exit(&devctx->lock);  in devmap_do_ctxmgt()
2651 		    ret, dhp, devctx);  in devmap_do_ctxmgt()
2654 		if (devctx->oncpu) {  in devmap_do_ctxmgt()
2655 			mutex_enter(&devctx->lock);  in devmap_do_ctxmgt()
2656 			devctx->oncpu = 0;  in devmap_do_ctxmgt()
2657 			cv_signal(&devctx->cv);  in devmap_do_ctxmgt()
2658 			mutex_exit(&devctx->lock);  in devmap_do_ctxmgt()
2667 		mutex_enter(&devctx->lock);  in devmap_do_ctxmgt()
2671 			devctx->timeout = timeout(devmap_ctxto,  in devmap_do_ctxmgt()
2672 			    devctx, dhp->dh_timeout_length);  in devmap_do_ctxmgt()
2680 			devctx->oncpu = 0;  in devmap_do_ctxmgt()
2681 			cv_signal(&devctx->cv);  in devmap_do_ctxmgt()
2683 		mutex_exit(&devctx->lock);  in devmap_do_ctxmgt()
2994 	struct devmap_ctx *devctx = dhp->dh_ctx;  in devmap_ctx_rele()  local
3003 	mutex_enter(&devctx->lock);  in devmap_ctx_rele()
3005 	ASSERT(devctx->refcnt > 0);  in devmap_ctx_rele()
3007 	devctx->refcnt--;  in devmap_ctx_rele()
3012 	if (devctx->refcnt == 0) {  in devmap_ctx_rele()
3017 		if (devctx->timeout != 0) {  in devmap_ctx_rele()
3021 			tid = devctx->timeout;  in devmap_ctx_rele()
3022 			mutex_exit(&devctx->lock);  in devmap_ctx_rele()
3024 			mutex_enter(&devctx->lock);  in devmap_ctx_rele()
3027 		devctx->oncpu = 0;  in devmap_ctx_rele()
3028 		cv_signal(&devctx->cv);  in devmap_ctx_rele()
3030 		if (devmapctx_list == devctx)  in devmap_ctx_rele()
3031 			devmapctx_list = devctx->next;  in devmap_ctx_rele()
3036 				if (tmp == devctx) {  in devmap_ctx_rele()
3043 		mutex_exit(&devctx->lock);  in devmap_ctx_rele()
3044 		mutex_destroy(&devctx->lock);  in devmap_ctx_rele()
3045 		cv_destroy(&devctx->cv);  in devmap_ctx_rele()
3046 		kmem_free(devctx, sizeof (struct devmap_ctx));  in devmap_ctx_rele()
3048 		mutex_exit(&devctx->lock);  in devmap_ctx_rele()