int
cam_devq_init(struct cam_devq *devq, int devices, int openings)
{
bzero(devq, sizeof(*devq));
if (camq_init(&devq->alloc_queue, devices) != 0) {
return (1);
}
if (camq_init(&devq->send_queue, devices) != 0) {
camq_fini(&devq->alloc_queue);
return (1);
}
devq->alloc_openings = openings;
devq->alloc_active = 0;
devq->send_openings = openings;
devq->send_active = 0;
return (0);
}
int
cam_ccbq_init(struct cam_ccbq *ccbq, int openings)
{
bzero(ccbq, sizeof(*ccbq));
if (camq_init(&ccbq->queue, openings + (CAM_RL_VALUES - 1)) != 0)
return (1);
ccbq->devq_openings = openings;
ccbq->dev_openings = openings;
return (0);
}
int
cam_ccbq_init(struct cam_ccbq *ccbq, int openings)
{
bzero(ccbq, sizeof(*ccbq));
if (camq_init(&ccbq->queue,
imax(64, 1 << fls(openings + openings / 2))) != 0)
return (1);
ccbq->total_openings = openings;
ccbq->dev_openings = openings;
return (0);
}
int
cam_devq_init(struct cam_devq *devq, int devices, int openings)
{
bzero(devq, sizeof(*devq));
mtx_init(&devq->send_mtx, "CAM queue lock", NULL, MTX_DEF);
if (camq_init(&devq->send_queue, devices) != 0)
return (1);
devq->send_openings = openings;
devq->send_active = 0;
return (0);
}
struct camq *
camq_alloc(int size)
{
struct camq *camq;
camq = (struct camq *)malloc(sizeof(*camq), M_CAMQ, M_NOWAIT);
if (camq != NULL) {
if (camq_init(camq, size) != 0) {
free(camq, M_CAMQ);
camq = NULL;
}
}
return (camq);
}
