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Subject[PATCH v2 09/22] 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>
---
v2: rebased
---
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 d64a51e..06b3fb6 100644
--- a/drivers/fpga/intel-feature-dev.h
+++ b/drivers/fpga/intel-feature-dev.h
@@ -235,6 +235,9 @@ 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];
};
@@ -354,4 +357,10 @@ static inline int fpga_port_reset(struct platform_device *pdev)

return pdata->features[index].ioaddr;
}
+
+static inline struct device *
+fpga_feature_dev_to_pcidev(struct platform_device *dev)
+{
+ return dev->dev.parent->parent;
+}
#endif
diff --git a/drivers/fpga/intel-pcie.c b/drivers/fpga/intel-pcie.c
index 54c0e3a..86ea5c7 100644
--- a/drivers/fpga/intel-pcie.c
+++ b/drivers/fpga/intel-pcie.c
@@ -209,6 +209,27 @@ 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)
{
@@ -310,6 +331,9 @@ static int build_info_commit_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()
--
1.8.3.1
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