From: Christoph Hellwig <hch@lst.de>
Date: Thu, 18 Oct 2018 15:05:37 +0200
Subject: scsi: pmcraid: use generic DMA API
Patch-mainline: v5.0-rc1
Git-commit: 371a6c328ad423c51ffcf68ec211d3eeb80f1874
References: bsc#1135990 jsc#SLE-4709

Switch from the legacy PCI DMA API to the generic DMA API.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
 drivers/scsi/pmcraid.c |   79 ++++++++++++++++++++++---------------------------
 1 file changed, 36 insertions(+), 43 deletions(-)

--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -3556,7 +3556,7 @@ static int pmcraid_build_passthrough_ioa
 		return -ENOMEM;
 	}
 
-	sglist->num_dma_sg = pci_map_sg(cmd->drv_inst->pdev,
+	sglist->num_dma_sg = dma_map_sg(&cmd->drv_inst->pdev->dev,
 					sglist->scatterlist,
 					sglist->num_sg, direction);
 
@@ -3605,7 +3605,7 @@ static void pmcraid_release_passthrough_
 	struct pmcraid_sglist *sglist = cmd->sglist;
 
 	if (buflen > 0) {
-		pci_unmap_sg(cmd->drv_inst->pdev,
+		dma_unmap_sg(&cmd->drv_inst->pdev->dev,
 			     sglist->scatterlist,
 			     sglist->num_sg,
 			     direction);
@@ -4741,9 +4741,9 @@ static void
 pmcraid_release_host_rrqs(struct pmcraid_instance *pinstance, int maxindex)
 {
 	int i;
-	for (i = 0; i < maxindex; i++) {
 
-		pci_free_consistent(pinstance->pdev,
+	for (i = 0; i < maxindex; i++) {
+		dma_free_coherent(&pinstance->pdev->dev,
 				    HRRQ_ENTRY_SIZE * PMCRAID_MAX_CMD,
 				    pinstance->hrrq_start[i],
 				    pinstance->hrrq_start_bus_addr[i]);
@@ -4770,11 +4770,9 @@ static int pmcraid_allocate_host_rrqs(st
 
 	for (i = 0; i < pinstance->num_hrrq; i++) {
 		pinstance->hrrq_start[i] =
-			pci_alloc_consistent(
-					pinstance->pdev,
-					buffer_size,
-					&(pinstance->hrrq_start_bus_addr[i]));
-
+			dma_alloc_coherent(&pinstance->pdev->dev, buffer_size,
+					   &pinstance->hrrq_start_bus_addr[i],
+					   GFP_KERNEL);
 		if (!pinstance->hrrq_start[i]) {
 			pmcraid_err("pci_alloc failed for hrrq vector : %d\n",
 				    i);
@@ -4803,7 +4801,7 @@ static int pmcraid_allocate_host_rrqs(st
 static void pmcraid_release_hcams(struct pmcraid_instance *pinstance)
 {
 	if (pinstance->ccn.msg != NULL) {
-		pci_free_consistent(pinstance->pdev,
+		dma_free_coherent(&pinstance->pdev->dev,
 				    PMCRAID_AEN_HDR_SIZE +
 				    sizeof(struct pmcraid_hcam_ccn_ext),
 				    pinstance->ccn.msg,
@@ -4815,7 +4813,7 @@ static void pmcraid_release_hcams(struct
 	}
 
 	if (pinstance->ldn.msg != NULL) {
-		pci_free_consistent(pinstance->pdev,
+		dma_free_coherent(&pinstance->pdev->dev,
 				    PMCRAID_AEN_HDR_SIZE +
 				    sizeof(struct pmcraid_hcam_ldn),
 				    pinstance->ldn.msg,
@@ -4836,17 +4834,15 @@ static void pmcraid_release_hcams(struct
  */
 static int pmcraid_allocate_hcams(struct pmcraid_instance *pinstance)
 {
-	pinstance->ccn.msg = pci_alloc_consistent(
-					pinstance->pdev,
+	pinstance->ccn.msg = dma_alloc_coherent(&pinstance->pdev->dev,
 					PMCRAID_AEN_HDR_SIZE +
 					sizeof(struct pmcraid_hcam_ccn_ext),
-					&(pinstance->ccn.baddr));
+					&pinstance->ccn.baddr, GFP_KERNEL);
 
-	pinstance->ldn.msg = pci_alloc_consistent(
-					pinstance->pdev,
+	pinstance->ldn.msg = dma_alloc_coherent(&pinstance->pdev->dev,
 					PMCRAID_AEN_HDR_SIZE +
 					sizeof(struct pmcraid_hcam_ldn),
-					&(pinstance->ldn.baddr));
+					&pinstance->ldn.baddr, GFP_KERNEL);
 
 	if (pinstance->ldn.msg == NULL || pinstance->ccn.msg == NULL) {
 		pmcraid_release_hcams(pinstance);
@@ -4874,7 +4870,7 @@ static void pmcraid_release_config_buffe
 {
 	if (pinstance->cfg_table != NULL &&
 	    pinstance->cfg_table_bus_addr != 0) {
-		pci_free_consistent(pinstance->pdev,
+		dma_free_coherent(&pinstance->pdev->dev,
 				    sizeof(struct pmcraid_config_table),
 				    pinstance->cfg_table,
 				    pinstance->cfg_table_bus_addr);
@@ -4918,10 +4914,10 @@ static int pmcraid_allocate_config_buffe
 		list_add_tail(&pinstance->res_entries[i].queue,
 			      &pinstance->free_res_q);
 
-	pinstance->cfg_table =
-		pci_alloc_consistent(pinstance->pdev,
+	pinstance->cfg_table = dma_alloc_coherent(&pinstance->pdev->dev,
 				     sizeof(struct pmcraid_config_table),
-				     &pinstance->cfg_table_bus_addr);
+				     &pinstance->cfg_table_bus_addr,
+				     GFP_KERNEL);
 
 	if (NULL == pinstance->cfg_table) {
 		pmcraid_err("couldn't alloc DMA memory for config table\n");
@@ -4986,7 +4982,7 @@ static void pmcraid_release_buffers(stru
 	pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq);
 
 	if (pinstance->inq_data != NULL) {
-		pci_free_consistent(pinstance->pdev,
+		dma_free_coherent(&pinstance->pdev->dev,
 				    sizeof(struct pmcraid_inquiry_data),
 				    pinstance->inq_data,
 				    pinstance->inq_data_baddr);
@@ -4996,7 +4992,7 @@ static void pmcraid_release_buffers(stru
 	}
 
 	if (pinstance->timestamp_data != NULL) {
-		pci_free_consistent(pinstance->pdev,
+		dma_free_coherent(&pinstance->pdev->dev,
 				    sizeof(struct pmcraid_timestamp_data),
 				    pinstance->timestamp_data,
 				    pinstance->timestamp_data_baddr);
@@ -5013,8 +5009,8 @@ static void pmcraid_release_buffers(stru
  * This routine pre-allocates memory based on the type of block as below:
  * cmdblocks(PMCRAID_MAX_CMD): kernel memory using kernel's slab_allocator,
  * IOARCBs(PMCRAID_MAX_CMD)  : DMAable memory, using pci pool allocator
- * config-table entries      : DMAable memory using pci_alloc_consistent
- * HostRRQs                  : DMAable memory, using pci_alloc_consistent
+ * config-table entries      : DMAable memory using dma_alloc_coherent
+ * HostRRQs                  : DMAable memory, using dma_alloc_coherent
  *
  * Return Value
  *	 0 in case all of the blocks are allocated, -ENOMEM otherwise.
@@ -5051,11 +5047,9 @@ static int pmcraid_init_buffers(struct p
 	}
 
 	/* allocate DMAable memory for page D0 INQUIRY buffer */
-	pinstance->inq_data = pci_alloc_consistent(
-					pinstance->pdev,
+	pinstance->inq_data = dma_alloc_coherent(&pinstance->pdev->dev,
 					sizeof(struct pmcraid_inquiry_data),
-					&pinstance->inq_data_baddr);
-
+					&pinstance->inq_data_baddr, GFP_KERNEL);
 	if (pinstance->inq_data == NULL) {
 		pmcraid_err("couldn't allocate DMA memory for INQUIRY\n");
 		pmcraid_release_buffers(pinstance);
@@ -5063,11 +5057,10 @@ static int pmcraid_init_buffers(struct p
 	}
 
 	/* allocate DMAable memory for set timestamp data buffer */
-	pinstance->timestamp_data = pci_alloc_consistent(
-					pinstance->pdev,
+	pinstance->timestamp_data = dma_alloc_coherent(&pinstance->pdev->dev,
 					sizeof(struct pmcraid_timestamp_data),
-					&pinstance->timestamp_data_baddr);
-
+					&pinstance->timestamp_data_baddr,
+					GFP_KERNEL);
 	if (pinstance->timestamp_data == NULL) {
 		pmcraid_err("couldn't allocate DMA memory for \
 				set time_stamp \n");
@@ -5356,12 +5349,12 @@ static int pmcraid_resume(struct pci_dev
 
 	pci_set_master(pdev);
 
-	if ((sizeof(dma_addr_t) == 4) ||
-	     pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
-		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (sizeof(dma_addr_t) == 4 ||
+	    dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
+		rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
 
 	if (rc == 0)
-		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 
 	if (rc != 0) {
 		dev_err(&pdev->dev, "resume: Failed to set PCI DMA mask\n");
@@ -5765,19 +5758,19 @@ static int pmcraid_probe(struct pci_dev
 	/* Firmware requires the system bus address of IOARCB to be within
 	 * 32-bit addressable range though it has 64-bit IOARRIN register.
 	 * However, firmware supports 64-bit streaming DMA buffers, whereas
-	 * coherent buffers are to be 32-bit. Since pci_alloc_consistent always
+	 * coherent buffers are to be 32-bit. Since dma_alloc_coherent always
 	 * returns memory within 4GB (if not, change this logic), coherent
 	 * buffers are within firmware acceptable address ranges.
 	 */
-	if ((sizeof(dma_addr_t) == 4) ||
-	    pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
-		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+	if (sizeof(dma_addr_t) == 4 ||
+	    dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)))
+		rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
 
 	/* firmware expects 32-bit DMA addresses for IOARRIN register; set 32
-	 * bit mask for pci_alloc_consistent to return addresses within 4GB
+	 * bit mask for dma_alloc_coherent to return addresses within 4GB
 	 */
 	if (rc == 0)
-		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+		rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 
 	if (rc != 0) {
 		dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");