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authorAlexandre Bounine <alexandre.bounine@idt.com>2013-07-03 15:08:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 16:08:05 -0700
commit3bdbb62fe97537252b22f700009863eeb51aa750 (patch)
tree7a3150f7496f951ac6de51f2156cf29fc8f9a73f
parentfdf90abc00979fb2d61dbdba9e855200e236142b (diff)
downloadlinux-linaro-stable-3bdbb62fe97537252b22f700009863eeb51aa750.tar.gz
rapidio: add udev notification
Add RapidIO-specific modalias generation to enable udev notifications about RapidIO-specific events. The RapidIO modalias string format is shown below: "rapidio:vNNNNdNNNNavNNNNadNNNN" Where: v - Device Vendor ID (16 bit), d - Device ID (16 bit), av - Assembly Vendor ID (16 bit), ad - Assembly ID (16 bit), as they are reported in corresponding Capability Registers (CARs) of each RapidIO device. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@Prodrive.nl> Cc: Micha Nelissen <micha.nelissen@Prodrive.nl> Cc: Stef van Os <stef.van.os@Prodrive.nl> Cc: Jean Delvare <jdelvare@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/rapidio/rio-driver.c18
-rw-r--r--drivers/rapidio/rio-sysfs.c10
-rw-r--r--include/linux/mod_devicetable.h19
-rw-r--r--include/linux/rio.h16
-rw-r--r--include/linux/rio_ids.h2
-rw-r--r--scripts/mod/devicetable-offsets.c6
-rw-r--r--scripts/mod/file2alias.c20
7 files changed, 74 insertions, 17 deletions
diff --git a/drivers/rapidio/rio-driver.c b/drivers/rapidio/rio-driver.c
index a0c875563d76..3e9b6a78ad18 100644
--- a/drivers/rapidio/rio-driver.c
+++ b/drivers/rapidio/rio-driver.c
@@ -199,6 +199,23 @@ static int rio_match_bus(struct device *dev, struct device_driver *drv)
out:return 0;
}
+static int rio_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct rio_dev *rdev;
+
+ if (!dev)
+ return -ENODEV;
+
+ rdev = to_rio_dev(dev);
+ if (!rdev)
+ return -ENODEV;
+
+ if (add_uevent_var(env, "MODALIAS=rapidio:v%04Xd%04Xav%04Xad%04X",
+ rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did))
+ return -ENOMEM;
+ return 0;
+}
+
struct device rio_bus = {
.init_name = "rapidio",
};
@@ -210,6 +227,7 @@ struct bus_type rio_bus_type = {
.bus_attrs = rio_bus_attrs,
.probe = rio_device_probe,
.remove = rio_device_remove,
+ .uevent = rio_uevent,
};
/**
diff --git a/drivers/rapidio/rio-sysfs.c b/drivers/rapidio/rio-sysfs.c
index 0c4473e54f86..9331be646dc3 100644
--- a/drivers/rapidio/rio-sysfs.c
+++ b/drivers/rapidio/rio-sysfs.c
@@ -84,6 +84,15 @@ static ssize_t lnext_show(struct device *dev,
return str - buf;
}
+static ssize_t modalias_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+
+ return sprintf(buf, "rapidio:v%04Xd%04Xav%04Xad%04X\n",
+ rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did);
+}
+
struct device_attribute rio_dev_attrs[] = {
__ATTR_RO(did),
__ATTR_RO(vid),
@@ -93,6 +102,7 @@ struct device_attribute rio_dev_attrs[] = {
__ATTR_RO(asm_rev),
__ATTR_RO(lprev),
__ATTR_RO(destid),
+ __ATTR_RO(modalias),
__ATTR_NULL,
};
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index b3bd7e737e8b..b62d4af6c667 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -579,4 +579,23 @@ struct mei_cl_device_id {
kernel_ulong_t driver_info;
};
+/* RapidIO */
+
+#define RIO_ANY_ID 0xffff
+
+/**
+ * struct rio_device_id - RIO device identifier
+ * @did: RapidIO device ID
+ * @vid: RapidIO vendor ID
+ * @asm_did: RapidIO assembly device ID
+ * @asm_vid: RapidIO assembly vendor ID
+ *
+ * Identifies a RapidIO device based on both the device/vendor IDs and
+ * the assembly device/vendor IDs.
+ */
+struct rio_device_id {
+ __u16 did, vid;
+ __u16 asm_did, asm_vid;
+};
+
#endif /* LINUX_MOD_DEVICETABLE_H */
diff --git a/include/linux/rio.h b/include/linux/rio.h
index 8d3db1b7b998..e2faf7b8fe80 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -20,6 +20,7 @@
#include <linux/errno.h>
#include <linux/device.h>
#include <linux/rio_regs.h>
+#include <linux/mod_devicetable.h>
#ifdef CONFIG_RAPIDIO_DMA_ENGINE
#include <linux/dmaengine.h>
#endif
@@ -396,21 +397,6 @@ struct rio_driver {
#define to_rio_driver(drv) container_of(drv,struct rio_driver, driver)
-/**
- * struct rio_device_id - RIO device identifier
- * @did: RIO device ID
- * @vid: RIO vendor ID
- * @asm_did: RIO assembly device ID
- * @asm_vid: RIO assembly vendor ID
- *
- * Identifies a RIO device based on both the device/vendor IDs and
- * the assembly device/vendor IDs.
- */
-struct rio_device_id {
- u16 did, vid;
- u16 asm_did, asm_vid;
-};
-
union rio_pw_msg {
struct {
u32 comptag; /* Component Tag CSR */
diff --git a/include/linux/rio_ids.h b/include/linux/rio_ids.h
index b66d13d1bdc0..2543bc163d54 100644
--- a/include/linux/rio_ids.h
+++ b/include/linux/rio_ids.h
@@ -13,8 +13,6 @@
#ifndef LINUX_RIO_IDS_H
#define LINUX_RIO_IDS_H
-#define RIO_ANY_ID 0xffff
-
#define RIO_VID_FREESCALE 0x0002
#define RIO_DID_MPC8560 0x0003
diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c
index e66d4d258e1a..bb5d115ca671 100644
--- a/scripts/mod/devicetable-offsets.c
+++ b/scripts/mod/devicetable-offsets.c
@@ -177,5 +177,11 @@ int main(void)
DEVID(mei_cl_device_id);
DEVID_FIELD(mei_cl_device_id, name);
+ DEVID(rio_device_id);
+ DEVID_FIELD(rio_device_id, did);
+ DEVID_FIELD(rio_device_id, vid);
+ DEVID_FIELD(rio_device_id, asm_did);
+ DEVID_FIELD(rio_device_id, asm_vid);
+
return 0;
}
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 45f9a3377dcd..d9e67b719f08 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -1145,6 +1145,26 @@ static int do_mei_entry(const char *filename, void *symval,
}
ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry);
+/* Looks like: rapidio:vNdNavNadN */
+static int do_rio_entry(const char *filename,
+ void *symval, char *alias)
+{
+ DEF_FIELD(symval, rio_device_id, did);
+ DEF_FIELD(symval, rio_device_id, vid);
+ DEF_FIELD(symval, rio_device_id, asm_did);
+ DEF_FIELD(symval, rio_device_id, asm_vid);
+
+ strcpy(alias, "rapidio:");
+ ADD(alias, "v", vid != RIO_ANY_ID, vid);
+ ADD(alias, "d", did != RIO_ANY_ID, did);
+ ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
+ ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
+
+ add_wildcard(alias);
+ return 1;
+}
+ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry);
+
/* Does namelen bytes of name exactly match the symbol? */
static bool sym_is(const char *name, unsigned namelen, const char *symbol)
{