C++ (Cpp) iser_dma_unmap_task_data 예제들

예제 #1

파일: iser_initiator.c 프로젝트: BORETS24/common.git-android-4.4

void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
	int prot_count = scsi_prot_sg_count(iser_task->sc);

	if (iser_task->dir[ISER_DIR_IN]) {
		iser_unreg_rdma_mem(iser_task, ISER_DIR_IN);
		iser_dma_unmap_task_data(iser_task,
					 &iser_task->data[ISER_DIR_IN],
					 DMA_FROM_DEVICE);
		if (prot_count)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->prot[ISER_DIR_IN],
						 DMA_FROM_DEVICE);
	}

	if (iser_task->dir[ISER_DIR_OUT]) {
		iser_unreg_rdma_mem(iser_task, ISER_DIR_OUT);
		iser_dma_unmap_task_data(iser_task,
					 &iser_task->data[ISER_DIR_OUT],
					 DMA_TO_DEVICE);
		if (prot_count)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->prot[ISER_DIR_OUT],
						 DMA_TO_DEVICE);
	}
}

예제 #2

파일: iser_initiator.c 프로젝트: bond-os/linux

void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
	int is_rdma_aligned = 1;
	struct iser_regd_buf *regd;

	/* if we were reading, copy back to unaligned sglist,
	 * anyway dma_unmap and free the copy
	 */
	if (iser_task->data_copy[ISER_DIR_IN].copy_buf != NULL) {
		is_rdma_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task, ISER_DIR_IN);
	}
	if (iser_task->data_copy[ISER_DIR_OUT].copy_buf != NULL) {
		is_rdma_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task, ISER_DIR_OUT);
	}

	if (iser_task->dir[ISER_DIR_IN]) {
		regd = &iser_task->rdma_regd[ISER_DIR_IN];
		if (regd->reg.is_fmr)
			iser_unreg_mem(&regd->reg);
	}

	if (iser_task->dir[ISER_DIR_OUT]) {
		regd = &iser_task->rdma_regd[ISER_DIR_OUT];
		if (regd->reg.is_fmr)
			iser_unreg_mem(&regd->reg);
	}

       /* if the data was unaligned, it was already unmapped and then copied */
       if (is_rdma_aligned)
		iser_dma_unmap_task_data(iser_task);
}

예제 #3

파일: iser_initiator.c 프로젝트: johnny/CobraDroidBeta

void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
	int deferred;
	int is_rdma_aligned = 1;
	struct iser_regd_buf *regd;

	/* if we were reading, copy back to unaligned sglist,
	 * anyway dma_unmap and free the copy
	 */
	if (iser_task->data_copy[ISER_DIR_IN].copy_buf != NULL) {
		is_rdma_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task, ISER_DIR_IN);
	}
	if (iser_task->data_copy[ISER_DIR_OUT].copy_buf != NULL) {
		is_rdma_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task, ISER_DIR_OUT);
	}

	if (iser_task->dir[ISER_DIR_IN]) {
		regd = &iser_task->rdma_regd[ISER_DIR_IN];
		deferred = iser_regd_buff_release(regd);
		if (deferred) {
			iser_err("%d references remain for BUF-IN rdma reg\n",
				 atomic_read(&regd->ref_count));
		}
	}

	if (iser_task->dir[ISER_DIR_OUT]) {
		regd = &iser_task->rdma_regd[ISER_DIR_OUT];
		deferred = iser_regd_buff_release(regd);
		if (deferred) {
			iser_err("%d references remain for BUF-OUT rdma reg\n",
				 atomic_read(&regd->ref_count));
		}
	}

       /* if the data was unaligned, it was already unmapped and then copied */
       if (is_rdma_aligned)
		iser_dma_unmap_task_data(iser_task);
}

예제 #4

파일: iser_initiator.c 프로젝트: DenisLug/mptcp

void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
	int is_rdma_data_aligned = 1;
	int is_rdma_prot_aligned = 1;
	int prot_count = scsi_prot_sg_count(iser_task->sc);

	/* if we were reading, copy back to unaligned sglist,
	 * anyway dma_unmap and free the copy
	 */
	if (iser_task->data[ISER_DIR_IN].orig_sg) {
		is_rdma_data_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task,
						&iser_task->data[ISER_DIR_IN],
						ISER_DIR_IN);
	}

	if (iser_task->data[ISER_DIR_OUT].orig_sg) {
		is_rdma_data_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task,
						&iser_task->data[ISER_DIR_OUT],
						ISER_DIR_OUT);
	}

	if (iser_task->prot[ISER_DIR_IN].orig_sg) {
		is_rdma_prot_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task,
						&iser_task->prot[ISER_DIR_IN],
						ISER_DIR_IN);
	}

	if (iser_task->prot[ISER_DIR_OUT].orig_sg) {
		is_rdma_prot_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task,
						&iser_task->prot[ISER_DIR_OUT],
						ISER_DIR_OUT);
	}

	if (iser_task->dir[ISER_DIR_IN]) {
		iser_unreg_rdma_mem(iser_task, ISER_DIR_IN);
		if (is_rdma_data_aligned)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->data[ISER_DIR_IN],
						 DMA_FROM_DEVICE);
		if (prot_count && is_rdma_prot_aligned)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->prot[ISER_DIR_IN],
						 DMA_FROM_DEVICE);
	}

	if (iser_task->dir[ISER_DIR_OUT]) {
		iser_unreg_rdma_mem(iser_task, ISER_DIR_OUT);
		if (is_rdma_data_aligned)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->data[ISER_DIR_OUT],
						 DMA_TO_DEVICE);
		if (prot_count && is_rdma_prot_aligned)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->prot[ISER_DIR_OUT],
						 DMA_TO_DEVICE);
	}
}

예제 #5

파일: iser_initiator.c 프로젝트: antiguru/ofed-compat-rdma

void iser_task_rdma_finalize(struct iscsi_iser_task *iser_task)
{
	struct iser_device *device = iser_task->iser_conn->ib_conn.device;
	int is_rdma_data_aligned = 1;
	int is_rdma_prot_aligned = 1;
	int prot_count = scsi_prot_sg_count(iser_task->sc);

	/* if we were reading, copy back to unaligned sglist,
	 * anyway dma_unmap and free the copy
	 */
	if (iser_task->data_copy[ISER_DIR_IN].copy_buf != NULL) {
		is_rdma_data_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task,
						&iser_task->data[ISER_DIR_IN],
						&iser_task->data_copy[ISER_DIR_IN],
						ISER_DIR_IN);
	}

	if (iser_task->data_copy[ISER_DIR_OUT].copy_buf != NULL) {
		is_rdma_data_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task,
						&iser_task->data[ISER_DIR_OUT],
						&iser_task->data_copy[ISER_DIR_OUT],
						ISER_DIR_OUT);
	}

	if (iser_task->prot_copy[ISER_DIR_IN].copy_buf != NULL) {
		is_rdma_prot_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task,
						&iser_task->prot[ISER_DIR_IN],
						&iser_task->prot_copy[ISER_DIR_IN],
						ISER_DIR_IN);
	}

	if (iser_task->prot_copy[ISER_DIR_OUT].copy_buf != NULL) {
		is_rdma_prot_aligned = 0;
		iser_finalize_rdma_unaligned_sg(iser_task,
						&iser_task->prot[ISER_DIR_OUT],
						&iser_task->prot_copy[ISER_DIR_OUT],
						ISER_DIR_OUT);
	}

	if (iser_task->dir[ISER_DIR_IN]) {
		device->iser_unreg_rdma_mem(iser_task, ISER_DIR_IN);
		if (is_rdma_data_aligned)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->data[ISER_DIR_IN]);
		if (prot_count && is_rdma_prot_aligned)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->prot[ISER_DIR_IN]);
	}

	if (iser_task->dir[ISER_DIR_OUT]) {
		device->iser_unreg_rdma_mem(iser_task, ISER_DIR_OUT);
		if (is_rdma_data_aligned)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->data[ISER_DIR_OUT]);
		if (prot_count && is_rdma_prot_aligned)
			iser_dma_unmap_task_data(iser_task,
						 &iser_task->prot[ISER_DIR_OUT]);
	}
}

예제 #6

파일: iser_memory.c 프로젝트: smx-smx/dsl-n55u

/**
 * iser_reg_rdma_mem - Registers memory intended for RDMA,
 * obtaining rkey and va
 *
 * returns 0 on success, errno code on failure
 */
int iser_reg_rdma_mem(struct iscsi_iser_cmd_task *iser_ctask,
		      enum   iser_data_dir        cmd_dir)
{
	struct iser_conn     *ib_conn = iser_ctask->iser_conn->ib_conn;
	struct iser_device   *device = ib_conn->device;
	struct ib_device     *ibdev = device->ib_device;
	struct iser_data_buf *mem = &iser_ctask->data[cmd_dir];
	struct iser_regd_buf *regd_buf;
	int aligned_len;
	int err;
	int i;
	struct scatterlist *sg;

	regd_buf = &iser_ctask->rdma_regd[cmd_dir];

	aligned_len = iser_data_buf_aligned_len(mem, ibdev);
	if (aligned_len != mem->dma_nents) {
		iser_err("rdma alignment violation %d/%d aligned\n",
			 aligned_len, mem->size);
		iser_data_buf_dump(mem, ibdev);

		/* unmap the command data before accessing it */
		iser_dma_unmap_task_data(iser_ctask);

		/* allocate copy buf, if we are writing, copy the */
		/* unaligned scatterlist, dma map the copy        */
		if (iser_start_rdma_unaligned_sg(iser_ctask, cmd_dir) != 0)
				return -ENOMEM;
		mem = &iser_ctask->data_copy[cmd_dir];
	}

	/* if there a single dma entry, FMR is not needed */
	if (mem->dma_nents == 1) {
		sg = (struct scatterlist *)mem->buf;

		regd_buf->reg.lkey = device->mr->lkey;
		regd_buf->reg.rkey = device->mr->rkey;
		regd_buf->reg.len  = ib_sg_dma_len(ibdev, &sg[0]);
		regd_buf->reg.va   = ib_sg_dma_address(ibdev, &sg[0]);
		regd_buf->reg.is_fmr = 0;

		iser_dbg("PHYSICAL Mem.register: lkey: 0x%08X rkey: 0x%08X  "
			 "va: 0x%08lX sz: %ld]\n",
			 (unsigned int)regd_buf->reg.lkey,
			 (unsigned int)regd_buf->reg.rkey,
			 (unsigned long)regd_buf->reg.va,
			 (unsigned long)regd_buf->reg.len);
	} else { /* use FMR for multiple dma entries */
		iser_page_vec_build(mem, ib_conn->page_vec, ibdev);
		err = iser_reg_page_vec(ib_conn, ib_conn->page_vec, &regd_buf->reg);
		if (err) {
			iser_data_buf_dump(mem, ibdev);
			iser_err("mem->dma_nents = %d (dlength = 0x%x)\n", mem->dma_nents,
				 ntoh24(iser_ctask->desc.iscsi_header.dlength));
			iser_err("page_vec: data_size = 0x%x, length = %d, offset = 0x%x\n",
				 ib_conn->page_vec->data_size, ib_conn->page_vec->length,
				 ib_conn->page_vec->offset);
			for (i=0 ; i<ib_conn->page_vec->length ; i++)
				iser_err("page_vec[%d] = 0x%llx\n", i,
					 (unsigned long long) ib_conn->page_vec->pages[i]);
			return err;
		}
	}

	/* take a reference on this regd buf such that it will not be released *
	 * (eg in send dto completion) before we get the scsi response         */
	atomic_inc(&regd_buf->ref_count);
	return 0;
}