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Subject[PATCH 06/16] fpga: intel: pcie: adds fpga_for_each_port callback for fme device
Date
For FPGA Management Engine (FME), it requires fpga_for_each_port callback
for actions on ports, so export this function from PCIe driver by adding
the callback to the platform data.

Signed-off-by: Tim Whisonant <tim.whisonant@intel.com>
Signed-off-by: Enno Luebbers <enno.luebbers@intel.com>
Signed-off-by: Shiva Rao <shiva.rao@intel.com>
Signed-off-by: Christopher Rauer <christopher.rauer@intel.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
---
drivers/fpga/intel/feature-dev.h | 9 +++++++++
drivers/fpga/intel/pcie.c | 24 ++++++++++++++++++++++++
2 files changed, 33 insertions(+)

diff --git a/drivers/fpga/intel/feature-dev.h b/drivers/fpga/intel/feature-dev.h
index d1723ff..38531f8 100644
--- a/drivers/fpga/intel/feature-dev.h
+++ b/drivers/fpga/intel/feature-dev.h
@@ -221,6 +221,9 @@ struct feature_platform_data {
struct platform_device *dev;
unsigned int disable_count; /* count for port disable */

+ struct platform_device *(*fpga_for_each_port)(struct platform_device *,
+ void *, int (*match)(struct platform_device *, void *));
+
int num; /* number of features */
struct feature features[0];
};
@@ -335,6 +338,12 @@ get_feature_ioaddr_by_index(struct device *dev, int index)
return pdata->features[index].ioaddr;
}

+static inline struct device *
+fpga_feature_dev_to_pcidev(struct platform_device *dev)
+{
+ return dev->dev.parent->parent;
+}
+
/*
* Wait register's _field to be changed to the given value (_expect's _field)
* by polling with given interval and timeout.
diff --git a/drivers/fpga/intel/pcie.c b/drivers/fpga/intel/pcie.c
index e3440ca..f2b458d 100644
--- a/drivers/fpga/intel/pcie.c
+++ b/drivers/fpga/intel/pcie.c
@@ -211,6 +211,27 @@ static int parse_switch_to(struct build_feature_devs_info *binfo, int bar)
return parse_start_from(binfo, bar);
}

+static struct platform_device *fpga_for_each_port(struct platform_device *pdev,
+ void *data, int (*match)(struct platform_device *, void *))
+{
+ struct device *pci_dev = fpga_feature_dev_to_pcidev(pdev);
+ struct cci_drvdata *drvdata = dev_get_drvdata(pci_dev);
+ struct feature_platform_data *pdata;
+ struct platform_device *port_dev;
+
+ mutex_lock(&drvdata->lock);
+ list_for_each_entry(pdata, &drvdata->port_dev_list, node) {
+ port_dev = pdata->dev;
+
+ if (match(port_dev, data) && get_device(&port_dev->dev))
+ goto exit;
+ }
+ port_dev = NULL;
+exit:
+ mutex_unlock(&drvdata->lock);
+ return port_dev;
+}
+
static struct build_feature_devs_info *
build_info_alloc_and_init(struct pci_dev *pdev)
{
@@ -312,6 +333,9 @@ build_info_create_dev(struct build_feature_devs_info *binfo,
if (!pdata)
return -ENOMEM;

+ if (type == FME_ID)
+ pdata->fpga_for_each_port = fpga_for_each_port;
+
/*
* the count should be initialized to 0 to make sure
*__fpga_port_enable() following __fpga_port_disable()
--
2.7.4
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