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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>
This commit is contained in:
Uma Krishnan 2018-03-26 11:33:21 -05:00 committed by Martin K. Petersen
parent 119c920073
commit 7390482376
2 changed files with 23 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/scsi/cxlflash/ocxl_hw.c
View File

@ -415,10 +415,27 @@ 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);

1
drivers/scsi/cxlflash/ocxl_hw.h
View File

@ -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 */