scsi: cxlflash: Setup function OCXL link
After reading and modifying the function configuration, setup the OCXL link
using the OCXL provider services. The link is released when the adapter is
unconfigured.
Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c
index a2f04d3..67517f8 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.c
+++ b/drivers/scsi/cxlflash/ocxl_hw.c
@@ -415,11 +415,28 @@ static int ocxlflash_config_fn(struct pci_dev *pdev, struct ocxl_hw_afu *afu)
ocxl_config_set_actag(pdev, fcfg->dvsec_function_pos, base, enabled);
dev_dbg(dev, "%s: Function acTag range base=%u enabled=%u\n",
__func__, base, enabled);
+
+ rc = ocxl_link_setup(pdev, 0, &afu->link_token);
+ if (unlikely(rc)) {
+ dev_err(dev, "%s: ocxl_link_setup failed rc=%d\n",
+ __func__, rc);
+ goto out;
+ }
out:
return rc;
}
/**
+ * ocxlflash_unconfig_fn() - unconfigure the host function
+ * @pdev: PCI device associated with the host.
+ * @afu: AFU associated with the host.
+ */
+static void ocxlflash_unconfig_fn(struct pci_dev *pdev, struct ocxl_hw_afu *afu)
+{
+ ocxl_link_release(pdev, afu->link_token);
+}
+
+/**
* ocxlflash_map_mmio() - map the AFU MMIO space
* @afu: AFU associated with the host.
*
@@ -560,7 +577,7 @@ static void *ocxlflash_create_afu(struct pci_dev *pdev)
if (unlikely(rc)) {
dev_err(dev, "%s: AFU configuration failed rc=%d\n",
__func__, rc);
- goto err1;
+ goto err2;
}
ctx = ocxlflash_dev_context_init(pdev, afu);
@@ -568,14 +585,16 @@ static void *ocxlflash_create_afu(struct pci_dev *pdev)
rc = PTR_ERR(ctx);
dev_err(dev, "%s: ocxlflash_dev_context_init failed rc=%d\n",
__func__, rc);
- goto err2;
+ goto err3;
}
afu->ocxl_ctx = ctx;
out:
return afu;
-err2:
+err3:
ocxlflash_unconfig_afu(afu);
+err2:
+ ocxlflash_unconfig_fn(pdev, afu);
err1:
idr_destroy(&afu->idr);
kfree(afu);
diff --git a/drivers/scsi/cxlflash/ocxl_hw.h b/drivers/scsi/cxlflash/ocxl_hw.h
index ee19717..09fa94c 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.h
+++ b/drivers/scsi/cxlflash/ocxl_hw.h
@@ -31,6 +31,7 @@ struct ocxl_hw_afu {
phys_addr_t gmmio_phys; /* Global AFU MMIO space */
void __iomem *gmmio_virt; /* Global MMIO map */
+ void *link_token; /* Link token for the SPA */
struct idr idr; /* IDR to manage contexts */
int max_pasid; /* Maximum number of contexts */
bool is_present; /* Function has AFUs defined */
