Both DPRC driver and VFIO driver use the same initialization
code for the DPRC. Introduced a new function which groups this
initialization code. The function is exported and may be
used by VFIO as well.
Signed-off-by: Diana Craciun <[email protected]>
---
drivers/bus/fsl-mc/dprc-driver.c | 78 ++++++++++++++++++++++----------
include/linux/fsl/mc.h | 2 +
2 files changed, 55 insertions(+), 25 deletions(-)
diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c
index 07012894cc9c..ec44d025f623 100644
--- a/drivers/bus/fsl-mc/dprc-driver.c
+++ b/drivers/bus/fsl-mc/dprc-driver.c
@@ -564,16 +564,15 @@ static int dprc_setup_irq(struct fsl_mc_device *mc_dev)
}
/**
- * dprc_probe - callback invoked when a DPRC is being bound to this driver
+ * dprc_setup - opens and creates a mc_io for DPRC
*
* @mc_dev: Pointer to fsl-mc device representing a DPRC
*
* It opens the physical DPRC in the MC.
- * It scans the DPRC to discover the MC objects contained in it.
- * It creates the interrupt pool for the MC bus associated with the DPRC.
- * It configures the interrupts for the DPRC device itself.
+ * It configures the DPRC portal used to communicate with MC
*/
-static int dprc_probe(struct fsl_mc_device *mc_dev)
+
+int dprc_setup(struct fsl_mc_device *mc_dev)
{
int error;
size_t region_size;
@@ -583,12 +582,6 @@ static int dprc_probe(struct fsl_mc_device *mc_dev)
bool msi_domain_set = false;
u16 major_ver, minor_ver;
- if (!is_fsl_mc_bus_dprc(mc_dev))
- return -EINVAL;
-
- if (dev_get_msi_domain(&mc_dev->dev))
- return -EINVAL;
-
if (!mc_dev->mc_io) {
/*
* This is a child DPRC:
@@ -635,6 +628,7 @@ static int dprc_probe(struct fsl_mc_device *mc_dev)
} else {
dev_set_msi_domain(&mc_dev->dev, mc_msi_domain);
msi_domain_set = true;
+
}
}
@@ -672,35 +666,69 @@ static int dprc_probe(struct fsl_mc_device *mc_dev)
goto error_cleanup_open;
}
+ return 0;
+
+error_cleanup_open:
+ (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
+
+error_cleanup_msi_domain:
+ if (msi_domain_set)
+ dev_set_msi_domain(&mc_dev->dev, NULL);
+
+ if (mc_io_created) {
+ fsl_destroy_mc_io(mc_dev->mc_io);
+ mc_dev->mc_io = NULL;
+ }
+
+ return error;
+}
+EXPORT_SYMBOL_GPL(dprc_setup);
+
+/**
+ * dprc_probe - callback invoked when a DPRC is being bound to this driver
+ *
+ * @mc_dev: Pointer to fsl-mc device representing a DPRC
+ *
+ * It opens the physical DPRC in the MC.
+ * It scans the DPRC to discover the MC objects contained in it.
+ * It creates the interrupt pool for the MC bus associated with the DPRC.
+ * It configures the interrupts for the DPRC device itself.
+ */
+static int dprc_probe(struct fsl_mc_device *mc_dev)
+{
+ int error;
+
+ if (!is_fsl_mc_bus_dprc(mc_dev))
+ return -EINVAL;
+
+ if (dev_get_msi_domain(&mc_dev->dev))
+ return -EINVAL;
+
+ error = dprc_setup(mc_dev);
+ if (error < 0)
+ return error;
+
/*
* Discover MC objects in DPRC object:
*/
error = dprc_scan_container(mc_dev, true);
if (error < 0)
- goto error_cleanup_open;
+ goto dprc_cleanup;
/*
* Configure interrupt for the DPRC object associated with this MC bus:
*/
error = dprc_setup_irq(mc_dev);
if (error < 0)
- goto error_cleanup_open;
+ goto scan_cleanup;
dev_info(&mc_dev->dev, "DPRC device bound to driver");
return 0;
-error_cleanup_open:
- (void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
-
-error_cleanup_msi_domain:
- if (msi_domain_set)
- dev_set_msi_domain(&mc_dev->dev, NULL);
-
- if (mc_io_created) {
- fsl_destroy_mc_io(mc_dev->mc_io);
- mc_dev->mc_io = NULL;
- }
-
+scan_cleanup:
+ device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove);
+dprc_cleanup:
+ dprc_cleanup(mc_dev);
return error;
}
diff --git a/include/linux/fsl/mc.h b/include/linux/fsl/mc.h
index 26f2b84dbe5f..df4a9bbae0f0 100644
--- a/include/linux/fsl/mc.h
+++ b/include/linux/fsl/mc.h
@@ -498,6 +498,8 @@ int dprc_scan_container(struct fsl_mc_device *mc_bus_dev,
int dprc_cleanup(struct fsl_mc_device *mc_dev);
+int dprc_setup(struct fsl_mc_device *mc_dev);
+
/*
* Data Path Buffer Pool (DPBP) API
* Contains initialization APIs and runtime control APIs for DPBP
--
2.17.1