qed: move chain methods to a separate file

Move chain allocation/freeing functions to a new file to not mix it with
hardware-related code.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 273 deletions

diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index 6516a1f921da..d9c7a1a6be94 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -4716,279 +4716,6 @@ void qed_hw_remove(struct qed_dev *cdev)
 	qed_mcp_nvm_info_free(p_hwfn);
 }
 
-static void qed_chain_free_next_ptr(struct qed_dev *cdev,
-				    struct qed_chain *p_chain)
-{
-	void *p_virt = p_chain->p_virt_addr, *p_virt_next = NULL;
-	dma_addr_t p_phys = p_chain->p_phys_addr, p_phys_next = 0;
-	struct qed_chain_next *p_next;
-	u32 size, i;
-
-	if (!p_virt)
-		return;
-
-	size = p_chain->elem_size * p_chain->usable_per_page;
-
-	for (i = 0; i < p_chain->page_cnt; i++) {
-		if (!p_virt)
-			break;
-
-		p_next = (struct qed_chain_next *)((u8 *)p_virt + size);
-		p_virt_next = p_next->next_virt;
-		p_phys_next = HILO_DMA_REGPAIR(p_next->next_phys);
-
-		dma_free_coherent(&cdev->pdev->dev,
-				  QED_CHAIN_PAGE_SIZE, p_virt, p_phys);
-
-		p_virt = p_virt_next;
-		p_phys = p_phys_next;
-	}
-}
-
-static void qed_chain_free_single(struct qed_dev *cdev,
-				  struct qed_chain *p_chain)
-{
-	if (!p_chain->p_virt_addr)
-		return;
-
-	dma_free_coherent(&cdev->pdev->dev,
-			  QED_CHAIN_PAGE_SIZE,
-			  p_chain->p_virt_addr, p_chain->p_phys_addr);
-}
-
-static void qed_chain_free_pbl(struct qed_dev *cdev, struct qed_chain *p_chain)
-{
-	struct addr_tbl_entry *pp_addr_tbl = p_chain->pbl.pp_addr_tbl;
-	u32 page_cnt = p_chain->page_cnt, i, pbl_size;
-
-	if (!pp_addr_tbl)
-		return;
-
-	for (i = 0; i < page_cnt; i++) {
-		if (!pp_addr_tbl[i].virt_addr || !pp_addr_tbl[i].dma_map)
-			break;
-
-		dma_free_coherent(&cdev->pdev->dev,
-				  QED_CHAIN_PAGE_SIZE,
-				  pp_addr_tbl[i].virt_addr,
-				  pp_addr_tbl[i].dma_map);
-	}
-
-	pbl_size = page_cnt * QED_CHAIN_PBL_ENTRY_SIZE;
-
-	if (!p_chain->b_external_pbl)
-		dma_free_coherent(&cdev->pdev->dev,
-				  pbl_size,
-				  p_chain->pbl_sp.p_virt_table,
-				  p_chain->pbl_sp.p_phys_table);
-
-	vfree(p_chain->pbl.pp_addr_tbl);
-	p_chain->pbl.pp_addr_tbl = NULL;
-}
-
-void qed_chain_free(struct qed_dev *cdev, struct qed_chain *p_chain)
-{
-	switch (p_chain->mode) {
-	case QED_CHAIN_MODE_NEXT_PTR:
-		qed_chain_free_next_ptr(cdev, p_chain);
-		break;
-	case QED_CHAIN_MODE_SINGLE:
-		qed_chain_free_single(cdev, p_chain);
-		break;
-	case QED_CHAIN_MODE_PBL:
-		qed_chain_free_pbl(cdev, p_chain);
-		break;
-	}
-}
-
-static int
-qed_chain_alloc_sanity_check(struct qed_dev *cdev,
-			     enum qed_chain_cnt_type cnt_type,
-			     size_t elem_size, u32 page_cnt)
-{
-	u64 chain_size = ELEMS_PER_PAGE(elem_size) * page_cnt;
-
-	/* The actual chain size can be larger than the maximal possible value
-	 * after rounding up the requested elements number to pages, and after
-	 * taking into acount the unusuable elements (next-ptr elements).
-	 * The size of a "u16" chain can be (U16_MAX + 1) since the chain
-	 * size/capacity fields are of a u32 type.
-	 */
-	if ((cnt_type == QED_CHAIN_CNT_TYPE_U16 &&
-	     chain_size > ((u32)U16_MAX + 1)) ||
-	    (cnt_type == QED_CHAIN_CNT_TYPE_U32 && chain_size > U32_MAX)) {
-		DP_NOTICE(cdev,
-			  "The actual chain size (0x%llx) is larger than the maximal possible value\n",
-			  chain_size);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int
-qed_chain_alloc_next_ptr(struct qed_dev *cdev, struct qed_chain *p_chain)
-{
-	void *p_virt = NULL, *p_virt_prev = NULL;
-	dma_addr_t p_phys = 0;
-	u32 i;
-
-	for (i = 0; i < p_chain->page_cnt; i++) {
-		p_virt = dma_alloc_coherent(&cdev->pdev->dev,
-					    QED_CHAIN_PAGE_SIZE,
-					    &p_phys, GFP_KERNEL);
-		if (!p_virt)
-			return -ENOMEM;
-
-		if (i == 0) {
-			qed_chain_init_mem(p_chain, p_virt, p_phys);
-			qed_chain_reset(p_chain);
-		} else {
-			qed_chain_init_next_ptr_elem(p_chain, p_virt_prev,
-						     p_virt, p_phys);
-		}
-
-		p_virt_prev = p_virt;
-	}
-	/* Last page's next element should point to the beginning of the
-	 * chain.
-	 */
-	qed_chain_init_next_ptr_elem(p_chain, p_virt_prev,
-				     p_chain->p_virt_addr,
-				     p_chain->p_phys_addr);
-
-	return 0;
-}
-
-static int
-qed_chain_alloc_single(struct qed_dev *cdev, struct qed_chain *p_chain)
-{
-	dma_addr_t p_phys = 0;
-	void *p_virt = NULL;
-
-	p_virt = dma_alloc_coherent(&cdev->pdev->dev,
-				    QED_CHAIN_PAGE_SIZE, &p_phys, GFP_KERNEL);
-	if (!p_virt)
-		return -ENOMEM;
-
-	qed_chain_init_mem(p_chain, p_virt, p_phys);
-	qed_chain_reset(p_chain);
-
-	return 0;
-}
-
-static int
-qed_chain_alloc_pbl(struct qed_dev *cdev,
-		    struct qed_chain *p_chain,
-		    struct qed_chain_ext_pbl *ext_pbl)
-{
-	u32 page_cnt = p_chain->page_cnt, size, i;
-	dma_addr_t p_phys = 0, p_pbl_phys = 0;
-	struct addr_tbl_entry *pp_addr_tbl;
-	u8 *p_pbl_virt = NULL;
-	void *p_virt = NULL;
-
-	size = page_cnt * sizeof(*pp_addr_tbl);
-	pp_addr_tbl =  vzalloc(size);
-	if (!pp_addr_tbl)
-		return -ENOMEM;
-
-	/* The allocation of the PBL table is done with its full size, since it
-	 * is expected to be successive.
-	 * qed_chain_init_pbl_mem() is called even in a case of an allocation
-	 * failure, since tbl was previously allocated, and it
-	 * should be saved to allow its freeing during the error flow.
-	 */
-	size = page_cnt * QED_CHAIN_PBL_ENTRY_SIZE;
-
-	if (!ext_pbl) {
-		p_pbl_virt = dma_alloc_coherent(&cdev->pdev->dev,
-						size, &p_pbl_phys, GFP_KERNEL);
-	} else {
-		p_pbl_virt = ext_pbl->p_pbl_virt;
-		p_pbl_phys = ext_pbl->p_pbl_phys;
-		p_chain->b_external_pbl = true;
-	}
-
-	qed_chain_init_pbl_mem(p_chain, p_pbl_virt, p_pbl_phys, pp_addr_tbl);
-	if (!p_pbl_virt)
-		return -ENOMEM;
-
-	for (i = 0; i < page_cnt; i++) {
-		p_virt = dma_alloc_coherent(&cdev->pdev->dev,
-					    QED_CHAIN_PAGE_SIZE,
-					    &p_phys, GFP_KERNEL);
-		if (!p_virt)
-			return -ENOMEM;
-
-		if (i == 0) {
-			qed_chain_init_mem(p_chain, p_virt, p_phys);
-			qed_chain_reset(p_chain);
-		}
-
-		/* Fill the PBL table with the physical address of the page */
-		*(dma_addr_t *)p_pbl_virt = p_phys;
-		/* Keep the virtual address of the page */
-		p_chain->pbl.pp_addr_tbl[i].virt_addr = p_virt;
-		p_chain->pbl.pp_addr_tbl[i].dma_map = p_phys;
-
-		p_pbl_virt += QED_CHAIN_PBL_ENTRY_SIZE;
-	}
-
-	return 0;
-}
-
-int qed_chain_alloc(struct qed_dev *cdev,
-		    enum qed_chain_use_mode intended_use,
-		    enum qed_chain_mode mode,
-		    enum qed_chain_cnt_type cnt_type,
-		    u32 num_elems,
-		    size_t elem_size,
-		    struct qed_chain *p_chain,
-		    struct qed_chain_ext_pbl *ext_pbl)
-{
-	u32 page_cnt;
-	int rc = 0;
-
-	if (mode == QED_CHAIN_MODE_SINGLE)
-		page_cnt = 1;
-	else
-		page_cnt = QED_CHAIN_PAGE_CNT(num_elems, elem_size, mode);
-
-	rc = qed_chain_alloc_sanity_check(cdev, cnt_type, elem_size, page_cnt);
-	if (rc) {
-		DP_NOTICE(cdev,
-			  "Cannot allocate a chain with the given arguments:\n");
-		DP_NOTICE(cdev,
-			  "[use_mode %d, mode %d, cnt_type %d, num_elems %d, elem_size %zu]\n",
-			  intended_use, mode, cnt_type, num_elems, elem_size);
-		return rc;
-	}
-
-	qed_chain_init_params(p_chain, page_cnt, (u8) elem_size, intended_use,
-			      mode, cnt_type);
-
-	switch (mode) {
-	case QED_CHAIN_MODE_NEXT_PTR:
-		rc = qed_chain_alloc_next_ptr(cdev, p_chain);
-		break;
-	case QED_CHAIN_MODE_SINGLE:
-		rc = qed_chain_alloc_single(cdev, p_chain);
-		break;
-	case QED_CHAIN_MODE_PBL:
-		rc = qed_chain_alloc_pbl(cdev, p_chain, ext_pbl);
-		break;
-	}
-	if (rc)
-		goto nomem;
-
-	return 0;
-
-nomem:
-	qed_chain_free(cdev, p_chain);
-	return rc;
-}
-
 int qed_fw_l2_queue(struct qed_hwfn *p_hwfn, u16 src_id, u16 *dst_id)
 {
 	if (src_id >= RESC_NUM(p_hwfn, QED_L2_QUEUE)) {