From: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
To: imunsie@au1.ibm.com, michael.neuling@au1.ibm.com,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v2 14/16] cxl: Parse device tree and create CAPI device(s) at boot
Date: Sat, 30 Jan 2016 15:07:17 +0100 [thread overview]
Message-ID: <1454162839-24407-15-git-send-email-fbarrat@linux.vnet.ibm.com> (raw)
In-Reply-To: <1454162839-24407-1-git-send-email-fbarrat@linux.vnet.ibm.com>
Add new entry point to scan the device tree at boot in a guest,
looking for CAPI devices.
Co-authored-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
---
drivers/misc/cxl/base.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/misc/cxl/base.c b/drivers/misc/cxl/base.c
index 957f4dd..9b90ec6 100644
--- a/drivers/misc/cxl/base.c
+++ b/drivers/misc/cxl/base.c
@@ -11,6 +11,7 @@
#include <linux/rcupdate.h>
#include <asm/errno.h>
#include <misc/cxl-base.h>
+#include <linux/of_platform.h>
#include "cxl.h"
/* protected by rcu */
@@ -91,3 +92,27 @@ int cxl_update_properties(struct device_node *dn,
return of_update_property(dn, new_prop);
}
EXPORT_SYMBOL_GPL(cxl_update_properties);
+
+static int __init cxl_base_init(void)
+{
+ struct device_node *np = NULL;
+ struct platform_device *dev;
+ int count = 0;
+
+ /*
+ * Scan for compatible devices in guest only
+ */
+ if (cpu_has_feature(CPU_FTR_HVMODE))
+ return 0;
+
+ while ((np = of_find_compatible_node(np, NULL,
+ "ibm,coherent-platform-facility"))) {
+ dev = of_platform_device_create(np, NULL, NULL);
+ if (dev)
+ count++;
+ }
+ pr_devel("Found %d cxl device(s)\n", count);
+ return 0;
+}
+
+module_init(cxl_base_init);
--
1.9.1
next prev parent reply other threads:[~2016-01-30 14:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-30 14:07 [PATCH v2 00/16] cxl: Add support for powerVM guest Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 01/16] cxl: Move common code away from bare-metal-specific files Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 02/16] cxl: Move bare-metal specific code to specialized files Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 03/16] cxl: Introduce implementation-specific API Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 04/16] cxl: Rename some bare-metal specific functions Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 05/16] cxl: Isolate a few bare-metal-specific calls Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 06/16] cxl: Update cxl_irq() prototype Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 07/16] cxl: IRQ allocation for guests Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 08/16] cxl: New possible return value from hcall Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 09/16] cxl: New hcalls to support CAPI adapters Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 10/16] cxl: Separate bare-metal fields in adapter and AFU data structures Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 11/16] cxl: Add guest-specific code Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 12/16] cxl: sysfs support for guests Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 13/16] cxl: Support to flash a new image on the adapter from a guest Frederic Barrat
2016-01-30 14:07 ` Frederic Barrat [this message]
2016-01-30 14:07 ` [PATCH v2 15/16] cxl: Support the cxl kernel API " Frederic Barrat
2016-01-30 14:07 ` [PATCH v2 16/16] cxl: Adapter failure handling Frederic Barrat
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