Lines Matching +full:dma +full:- +full:mem
1 // SPDX-License-Identifier: GPL-2.0-only
3 * Remote processor messaging transport (OMAP platform-specific bits)
8 * Ohad Ben-Cohen <ohad@wizery.com>
12 #include <linux/dma-direct.h>
13 #include <linux/dma-map-ops.h>
14 #include <linux/dma-mapping.h>
31 const struct bus_dma_region *map = from->dma_range_map, *new_map, *r; in copy_dma_range_map()
37 for (r = map; r->size; r++) in copy_dma_range_map()
43 return -ENOMEM; in copy_dma_range_map()
44 to->dma_range_map = new_map; in copy_dma_range_map()
52 pdev = container_of(vdev->dev.parent, struct platform_device, dev); in vdev_to_rvdev()
61 return rvdev->rproc; in vdev_to_rproc()
67 struct rproc_vring *rvring = vq->priv; in rproc_virtio_notify()
68 struct rproc *rproc = rvring->rvdev->rproc; in rproc_virtio_notify()
69 int notifyid = rvring->notifyid; in rproc_virtio_notify()
71 dev_dbg(&rproc->dev, "kicking vq index: %d\n", notifyid); in rproc_virtio_notify()
73 rproc->ops->kick(rproc, notifyid); in rproc_virtio_notify()
78 * rproc_vq_interrupt() - tell remoteproc that a virtqueue is interrupted
82 * This function should be called by the platform-specific rproc driver,
93 dev_dbg(&rproc->dev, "vq index %d is interrupted\n", notifyid); in rproc_vq_interrupt()
95 rvring = idr_find(&rproc->notifyids, notifyid); in rproc_vq_interrupt()
96 if (!rvring || !rvring->vq) in rproc_vq_interrupt()
99 return vring_interrupt(0, rvring->vq); in rproc_vq_interrupt()
110 struct device *dev = &rproc->dev; in rp_find_vq()
111 struct rproc_mem_entry *mem; in rp_find_vq() local
119 if (id >= ARRAY_SIZE(rvdev->vring)) in rp_find_vq()
120 return ERR_PTR(-EINVAL); in rp_find_vq()
126 mem = rproc_find_carveout_by_name(rproc, "vdev%dvring%d", rvdev->index, in rp_find_vq()
128 if (!mem || !mem->va) in rp_find_vq()
129 return ERR_PTR(-ENOMEM); in rp_find_vq()
131 rvring = &rvdev->vring[id]; in rp_find_vq()
132 addr = mem->va; in rp_find_vq()
133 num = rvring->num; in rp_find_vq()
136 size = vring_size(num, rvring->align); in rp_find_vq()
140 id, addr, num, rvring->notifyid); in rp_find_vq()
146 vq = vring_new_virtqueue(id, num, rvring->align, vdev, false, ctx, in rp_find_vq()
151 return ERR_PTR(-ENOMEM); in rp_find_vq()
154 vq->num_max = num; in rp_find_vq()
156 rvring->vq = vq; in rp_find_vq()
157 vq->priv = rvring; in rp_find_vq()
160 rsc = (void *)rproc->table_ptr + rvdev->rsc_offset; in rp_find_vq()
161 rsc->vring[id].da = mem->da; in rp_find_vq()
171 list_for_each_entry_safe(vq, n, &vdev->vqs, list) { in __rproc_virtio_del_vqs()
172 rvring = vq->priv; in __rproc_virtio_del_vqs()
173 rvring->vq = NULL; in __rproc_virtio_del_vqs()
193 if (!vqi->name) { in rproc_virtio_find_vqs()
198 vqs[i] = rp_find_vq(vdev, queue_idx++, vqi->callback, in rproc_virtio_find_vqs()
199 vqi->name, vqi->ctx); in rproc_virtio_find_vqs()
218 rsc = (void *)rvdev->rproc->table_ptr + rvdev->rsc_offset; in rproc_virtio_get_status()
220 return rsc->status; in rproc_virtio_get_status()
228 rsc = (void *)rvdev->rproc->table_ptr + rvdev->rsc_offset; in rproc_virtio_set_status()
230 rsc->status = status; in rproc_virtio_set_status()
231 dev_dbg(&vdev->dev, "status: %d\n", status); in rproc_virtio_set_status()
239 rsc = (void *)rvdev->rproc->table_ptr + rvdev->rsc_offset; in rproc_virtio_reset()
241 rsc->status = 0; in rproc_virtio_reset()
242 dev_dbg(&vdev->dev, "reset !\n"); in rproc_virtio_reset()
251 rsc = (void *)rvdev->rproc->table_ptr + rvdev->rsc_offset; in rproc_virtio_get_features()
253 return rsc->dfeatures; in rproc_virtio_get_features()
271 rsc = (void *)rvdev->rproc->table_ptr + rvdev->rsc_offset; in rproc_virtio_finalize_features()
280 BUG_ON((u32)vdev->features != vdev->features); in rproc_virtio_finalize_features()
286 rsc->gfeatures = vdev->features; in rproc_virtio_finalize_features()
298 rsc = (void *)rvdev->rproc->table_ptr + rvdev->rsc_offset; in rproc_virtio_get()
299 cfg = &rsc->vring[rsc->num_of_vrings]; in rproc_virtio_get()
301 if (offset + len > rsc->config_len || offset + len < len) { in rproc_virtio_get()
302 dev_err(&vdev->dev, "rproc_virtio_get: access out of bounds\n"); in rproc_virtio_get()
316 rsc = (void *)rvdev->rproc->table_ptr + rvdev->rsc_offset; in rproc_virtio_set()
317 cfg = &rsc->vring[rsc->num_of_vrings]; in rproc_virtio_set()
319 if (offset + len > rsc->config_len || offset + len < len) { in rproc_virtio_set()
320 dev_err(&vdev->dev, "rproc_virtio_set: access out of bounds\n"); in rproc_virtio_set()
354 of_reserved_mem_device_release(&rvdev->pdev->dev); in rproc_virtio_dev_release()
355 dma_release_coherent_memory(&rvdev->pdev->dev); in rproc_virtio_dev_release()
357 put_device(&rvdev->pdev->dev); in rproc_virtio_dev_release()
361 * rproc_add_virtio_dev() - register an rproc-induced virtio device
372 struct rproc *rproc = rvdev->rproc; in rproc_add_virtio_dev()
373 struct device *dev = &rvdev->pdev->dev; in rproc_add_virtio_dev()
375 struct rproc_mem_entry *mem; in rproc_add_virtio_dev() local
378 if (rproc->ops->kick == NULL) { in rproc_add_virtio_dev()
379 ret = -EINVAL; in rproc_add_virtio_dev()
380 dev_err(dev, ".kick method not defined for %s\n", rproc->name); in rproc_add_virtio_dev()
385 mem = rproc_find_carveout_by_name(rproc, "vdev%dbuffer", rvdev->index); in rproc_add_virtio_dev()
386 if (mem) { in rproc_add_virtio_dev()
389 if (mem->of_resm_idx != -1) { in rproc_add_virtio_dev()
390 struct device_node *np = rproc->dev.parent->of_node; in rproc_add_virtio_dev()
394 mem->of_resm_idx); in rproc_add_virtio_dev()
400 if (mem->va) { in rproc_add_virtio_dev()
402 rvdev->index); in rproc_add_virtio_dev()
403 pa = rproc_va_to_pa(mem->va); in rproc_add_virtio_dev()
405 /* Use dma address as carveout no memmapped yet */ in rproc_add_virtio_dev()
406 pa = (phys_addr_t)mem->dma; in rproc_add_virtio_dev()
411 mem->da, in rproc_add_virtio_dev()
412 mem->len); in rproc_add_virtio_dev()
419 struct device_node *np = rproc->dev.parent->of_node; in rproc_add_virtio_dev()
422 * If we don't have dedicated buffer, just attempt to re-assign in rproc_add_virtio_dev()
423 * the reserved memory from our parent. A default memory-region in rproc_add_virtio_dev()
424 * at index 0 from the parent's memory-regions is assigned for in rproc_add_virtio_dev()
425 * the rvdev dev to allocate from. Failure is non-critical and in rproc_add_virtio_dev()
435 ret = -ENOMEM; in rproc_add_virtio_dev()
438 vdev->id.device = id, in rproc_add_virtio_dev()
439 vdev->config = &rproc_virtio_config_ops, in rproc_add_virtio_dev()
440 vdev->dev.parent = dev; in rproc_add_virtio_dev()
441 vdev->dev.release = rproc_virtio_dev_release; in rproc_add_virtio_dev()
448 put_device(&vdev->dev); in rproc_add_virtio_dev()
453 dev_info(dev, "registered %s (type %d)\n", dev_name(&vdev->dev), id); in rproc_add_virtio_dev()
460 * rproc_remove_virtio_dev() - remove an rproc-induced virtio device
480 return rproc_add_virtio_dev(rvdev, rvdev->id); in rproc_vdev_do_start()
486 struct device *dev = &rvdev->pdev->dev; in rproc_vdev_do_stop()
496 struct device *dev = &pdev->dev; in rproc_virtio_probe()
497 struct rproc_vdev_data *rvdev_data = dev->platform_data; in rproc_virtio_probe()
499 struct rproc *rproc = container_of(dev->parent, struct rproc, dev); in rproc_virtio_probe()
504 return -EINVAL; in rproc_virtio_probe()
508 return -ENOMEM; in rproc_virtio_probe()
510 rvdev->id = rvdev_data->id; in rproc_virtio_probe()
511 rvdev->rproc = rproc; in rproc_virtio_probe()
512 rvdev->index = rvdev_data->index; in rproc_virtio_probe()
514 ret = copy_dma_range_map(dev, rproc->dev.parent); in rproc_virtio_probe()
518 /* Make device dma capable by inheriting from parent's capabilities */ in rproc_virtio_probe()
519 set_dma_ops(dev, get_dma_ops(rproc->dev.parent)); in rproc_virtio_probe()
521 ret = dma_coerce_mask_and_coherent(dev, dma_get_mask(rproc->dev.parent)); in rproc_virtio_probe()
523 dev_warn(dev, "Failed to set DMA mask %llx. Trying to continue... (%pe)\n", in rproc_virtio_probe()
524 dma_get_mask(rproc->dev.parent), ERR_PTR(ret)); in rproc_virtio_probe()
528 rvdev->pdev = pdev; in rproc_virtio_probe()
530 rsc = rvdev_data->rsc; in rproc_virtio_probe()
533 for (i = 0; i < rsc->num_of_vrings; i++) { in rproc_virtio_probe()
540 rvdev->rsc_offset = rvdev_data->rsc_offset; in rproc_virtio_probe()
543 for (i = 0; i < rsc->num_of_vrings; i++) { in rproc_virtio_probe()
551 rvdev->subdev.start = rproc_vdev_do_start; in rproc_virtio_probe()
552 rvdev->subdev.stop = rproc_vdev_do_stop; in rproc_virtio_probe()
554 rproc_add_subdev(rproc, &rvdev->subdev); in rproc_virtio_probe()
557 * We're indirectly making a non-temporary copy of the rproc pointer in rproc_virtio_probe()
564 get_device(&rproc->dev); in rproc_virtio_probe()
569 for (i--; i >= 0; i--) in rproc_virtio_probe()
570 rproc_free_vring(&rvdev->vring[i]); in rproc_virtio_probe()
577 struct rproc_vdev *rvdev = dev_get_drvdata(&pdev->dev); in rproc_virtio_remove()
578 struct rproc *rproc = rvdev->rproc; in rproc_virtio_remove()
582 for (id = 0; id < ARRAY_SIZE(rvdev->vring); id++) { in rproc_virtio_remove()
583 rvring = &rvdev->vring[id]; in rproc_virtio_remove()
587 rproc_remove_subdev(rproc, &rvdev->subdev); in rproc_virtio_remove()
590 put_device(&rproc->dev); in rproc_virtio_remove()
598 .name = "rproc-virtio",