[PATCH 2/6] cxlflash: Update cxl-specific arguments to generic cookie

[Uma Krishnan <ukrishn@linux.vnet.ibm.com>]

Convert cxl-specific pointers to generic cookies to facilitate future
enhancements.

Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
---
 drivers/scsi/cxlflash/common.h    |  4 ++--
 drivers/scsi/cxlflash/main.c      | 38 +++++++++++++++++++-------------------
 drivers/scsi/cxlflash/superpipe.c | 15 +++++++--------
 drivers/scsi/cxlflash/superpipe.h |  2 +-
 4 files changed, 29 insertions(+), 30 deletions(-)

diff --git a/drivers/scsi/cxlflash/common.h b/drivers/scsi/cxlflash/common.h
index 6d95e8e..d2a180d 100644
--- a/drivers/scsi/cxlflash/common.h
+++ b/drivers/scsi/cxlflash/common.h
@@ -129,7 +129,7 @@ struct cxlflash_cfg {
 	int lr_port;
 	atomic_t scan_host_needed;
 
-	struct cxl_afu *cxl_afu;
+	void *afu_cookie;
 
 	atomic_t recovery_threads;
 	struct mutex ctx_recovery_mutex;
@@ -203,7 +203,7 @@ struct hwq {
 	 * fields after this point
 	 */
 	struct afu *afu;
-	struct cxl_context *ctx;
+	void *ctx_cookie;
 	struct cxl_ioctl_start_work work;
 	struct sisl_host_map __iomem *host_map;		/* MC host map */
 	struct sisl_ctrl_map __iomem *ctrl_map;		/* MC control map */
diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index 48d3663..3880d52 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -739,7 +739,7 @@ static void term_intr(struct cxlflash_cfg *cfg, enum undo_level level,
 
 	hwq = get_hwq(afu, index);
 
-	if (!hwq->ctx) {
+	if (!hwq->ctx_cookie) {
 		dev_err(dev, "%s: returning with NULL MC\n", __func__);
 		return;
 	}
@@ -748,13 +748,13 @@ static void term_intr(struct cxlflash_cfg *cfg, enum undo_level level,
 	case UNMAP_THREE:
 		/* SISL_MSI_ASYNC_ERROR is setup only for the primary HWQ */
 		if (index == PRIMARY_HWQ)
-			cxl_unmap_afu_irq(hwq->ctx, 3, hwq);
+			cxl_unmap_afu_irq(hwq->ctx_cookie, 3, hwq);
 	case UNMAP_TWO:
-		cxl_unmap_afu_irq(hwq->ctx, 2, hwq);
+		cxl_unmap_afu_irq(hwq->ctx_cookie, 2, hwq);
 	case UNMAP_ONE:
-		cxl_unmap_afu_irq(hwq->ctx, 1, hwq);
+		cxl_unmap_afu_irq(hwq->ctx_cookie, 1, hwq);
 	case FREE_IRQ:
-		cxl_free_afu_irqs(hwq->ctx);
+		cxl_free_afu_irqs(hwq->ctx_cookie);
 		/* fall through */
 	case UNDO_NOOP:
 		/* No action required */
@@ -783,15 +783,15 @@ static void term_mc(struct cxlflash_cfg *cfg, u32 index)
 
 	hwq = get_hwq(afu, index);
 
-	if (!hwq->ctx) {
+	if (!hwq->ctx_cookie) {
 		dev_err(dev, "%s: returning with NULL MC\n", __func__);
 		return;
 	}
 
-	WARN_ON(cxl_stop_context(hwq->ctx));
+	WARN_ON(cxl_stop_context(hwq->ctx_cookie));
 	if (index != PRIMARY_HWQ)
-		WARN_ON(cxl_release_context(hwq->ctx));
-	hwq->ctx = NULL;
+		WARN_ON(cxl_release_context(hwq->ctx_cookie));
+	hwq->ctx_cookie = NULL;
 
 	spin_lock_irqsave(&hwq->hsq_slock, lock_flags);
 	flush_pending_cmds(hwq);
@@ -1611,7 +1611,7 @@ static int start_context(struct cxlflash_cfg *cfg, u32 index)
 	struct hwq *hwq = get_hwq(cfg->afu, index);
 	int rc = 0;
 
-	rc = cxl_start_context(hwq->ctx,
+	rc = cxl_start_context(hwq->ctx_cookie,
 			       hwq->work.work_element_descriptor,
 			       NULL);
 
@@ -1748,7 +1748,7 @@ static void init_pcr(struct cxlflash_cfg *cfg)
 	for (i = 0; i < afu->num_hwqs; i++) {
 		hwq = get_hwq(afu, i);
 
-		hwq->ctx_hndl = (u16) cxl_process_element(hwq->ctx);
+		hwq->ctx_hndl = (u16) cxl_process_element(hwq->ctx_cookie);
 		hwq->host_map = &afu->afu_map->hosts[hwq->ctx_hndl].host;
 		hwq->ctrl_map = &afu->afu_map->ctrls[hwq->ctx_hndl].ctrl;
 
@@ -1926,7 +1926,7 @@ static enum undo_level init_intr(struct cxlflash_cfg *cfg,
 				 struct hwq *hwq)
 {
 	struct device *dev = &cfg->dev->dev;
-	struct cxl_context *ctx = hwq->ctx;
+	void *ctx = hwq->ctx_cookie;
 	int rc = 0;
 	enum undo_level level = UNDO_NOOP;
 	bool is_primary_hwq = (hwq->index == PRIMARY_HWQ);
@@ -1980,7 +1980,7 @@ static enum undo_level init_intr(struct cxlflash_cfg *cfg,
  */
 static int init_mc(struct cxlflash_cfg *cfg, u32 index)
 {
-	struct cxl_context *ctx;
+	void *ctx;
 	struct device *dev = &cfg->dev->dev;
 	struct hwq *hwq = get_hwq(cfg->afu, index);
 	int rc = 0;
@@ -1999,8 +1999,8 @@ static int init_mc(struct cxlflash_cfg *cfg, u32 index)
 		goto err1;
 	}
 
-	WARN_ON(hwq->ctx);
-	hwq->ctx = ctx;
+	WARN_ON(hwq->ctx_cookie);
+	hwq->ctx_cookie = ctx;
 
 	/* Set it up as a master with the CXL */
 	cxl_set_master(ctx);
@@ -2040,7 +2040,7 @@ static int init_mc(struct cxlflash_cfg *cfg, u32 index)
 	if (index != PRIMARY_HWQ)
 		cxl_release_context(ctx);
 err1:
-	hwq->ctx = NULL;
+	hwq->ctx_cookie = NULL;
 	goto out;
 }
 
@@ -2095,7 +2095,7 @@ static int init_afu(struct cxlflash_cfg *cfg)
 	struct hwq *hwq;
 	int i;
 
-	cxl_perst_reloads_same_image(cfg->cxl_afu, true);
+	cxl_perst_reloads_same_image(cfg->afu_cookie, true);
 
 	afu->num_hwqs = afu->desired_hwqs;
 	for (i = 0; i < afu->num_hwqs; i++) {
@@ -2109,7 +2109,7 @@ static int init_afu(struct cxlflash_cfg *cfg)
 
 	/* Map the entire MMIO space of the AFU using the first context */
 	hwq = get_hwq(afu, PRIMARY_HWQ);
-	afu->afu_map = cxl_psa_map(hwq->ctx);
+	afu->afu_map = cxl_psa_map(hwq->ctx_cookie);
 	if (!afu->afu_map) {
 		dev_err(dev, "%s: cxl_psa_map failed\n", __func__);
 		rc = -ENOMEM;
@@ -3702,7 +3702,7 @@ static int cxlflash_probe(struct pci_dev *pdev,
 
 	pci_set_drvdata(pdev, cfg);
 
-	cfg->cxl_afu = cxl_pci_to_afu(pdev);
+	cfg->afu_cookie = cxl_pci_to_afu(pdev);
 
 	rc = init_pci(cfg);
 	if (rc) {
diff --git a/drivers/scsi/cxlflash/superpipe.c b/drivers/scsi/cxlflash/superpipe.c
index 170fff5..18f6240 100644
--- a/drivers/scsi/cxlflash/superpipe.c
+++ b/drivers/scsi/cxlflash/superpipe.c
@@ -810,14 +810,13 @@ static struct ctx_info *create_context(struct cxlflash_cfg *cfg)
  * init_context() - initializes a previously allocated context
  * @ctxi:	Previously allocated context
  * @cfg:	Internal structure associated with the host.
- * @ctx:	Previously obtained CXL context reference.
+ * @ctx:	Previously obtained context cookie.
  * @ctxid:	Previously obtained process element associated with CXL context.
  * @file:	Previously obtained file associated with CXL context.
  * @perms:	User-specified permissions.
  */
 static void init_context(struct ctx_info *ctxi, struct cxlflash_cfg *cfg,
-			 struct cxl_context *ctx, int ctxid, struct file *file,
-			 u32 perms)
+			 void *ctx, int ctxid, struct file *file, u32 perms)
 {
 	struct afu *afu = cfg->afu;
 
@@ -976,7 +975,7 @@ static int cxlflash_disk_detach(struct scsi_device *sdev,
  */
 static int cxlflash_cxl_release(struct inode *inode, struct file *file)
 {
-	struct cxl_context *ctx = cxl_fops_get_context(file);
+	void *ctx = cxl_fops_get_context(file);
 	struct cxlflash_cfg *cfg = container_of(file->f_op, struct cxlflash_cfg,
 						cxl_fops);
 	struct device *dev = &cfg->dev->dev;
@@ -1089,7 +1088,7 @@ static int cxlflash_mmap_fault(struct vm_fault *vmf)
 {
 	struct vm_area_struct *vma = vmf->vma;
 	struct file *file = vma->vm_file;
-	struct cxl_context *ctx = cxl_fops_get_context(file);
+	void *ctx = cxl_fops_get_context(file);
 	struct cxlflash_cfg *cfg = container_of(file->f_op, struct cxlflash_cfg,
 						cxl_fops);
 	struct device *dev = &cfg->dev->dev;
@@ -1162,7 +1161,7 @@ static const struct vm_operations_struct cxlflash_mmap_vmops = {
  */
 static int cxlflash_cxl_mmap(struct file *file, struct vm_area_struct *vma)
 {
-	struct cxl_context *ctx = cxl_fops_get_context(file);
+	void *ctx = cxl_fops_get_context(file);
 	struct cxlflash_cfg *cfg = container_of(file->f_op, struct cxlflash_cfg,
 						cxl_fops);
 	struct device *dev = &cfg->dev->dev;
@@ -1317,7 +1316,7 @@ static int cxlflash_disk_attach(struct scsi_device *sdev,
 	u64 rctxid = 0UL;
 	struct file *file = NULL;
 
-	struct cxl_context *ctx = NULL;
+	void *ctx = NULL;
 
 	int fd = -1;
 
@@ -1529,7 +1528,7 @@ static int recover_context(struct cxlflash_cfg *cfg,
 	int fd = -1;
 	int ctxid = -1;
 	struct file *file;
-	struct cxl_context *ctx;
+	void *ctx;
 	struct afu *afu = cfg->afu;
 
 	ctx = cxl_dev_context_init(cfg->dev);
diff --git a/drivers/scsi/cxlflash/superpipe.h b/drivers/scsi/cxlflash/superpipe.h
index 0b59768..62097df 100644
--- a/drivers/scsi/cxlflash/superpipe.h
+++ b/drivers/scsi/cxlflash/superpipe.h
@@ -104,7 +104,7 @@ struct ctx_info {
 	bool err_recovery_active;
 	struct mutex mutex; /* Context protection */
 	struct kref kref;
-	struct cxl_context *ctx;
+	void *ctx;
 	struct cxlflash_cfg *cfg;
 	struct list_head luns;	/* LUNs attached to this context */
 	const struct vm_operations_struct *cxl_mmap_vmops;
-- 
2.1.0