From 0efaf6b31abb1c76d905230ad3c5b864e72d593d Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@acm.org>
Date: Tue, 24 Aug 2010 18:35:37 +0000
Subject: [PATCH] Builds now on non-powerpc architectures too.

git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1980 d57e44dd-8a1f-0410-8b47-8ef2f437770f
---
 ibmvstgt/src/dummy_powerpc_defs.h | 134 ++++++++++++++++++++++++++++++
 ibmvstgt/src/ibmvstgt.c           |  12 ++-
 2 files changed, 143 insertions(+), 3 deletions(-)
 create mode 100644 ibmvstgt/src/dummy_powerpc_defs.h

diff --git a/ibmvstgt/src/dummy_powerpc_defs.h b/ibmvstgt/src/dummy_powerpc_defs.h
new file mode 100644
index 000000000..a941fd4f8
--- /dev/null
+++ b/ibmvstgt/src/dummy_powerpc_defs.h
@@ -0,0 +1,134 @@
+/* From include/linux/of.h */
+
+typedef u32 phandle;
+
+struct device_node {
+        const char *name;
+        const char *type;
+        phandle phandle;
+        char    *full_name;
+
+        struct  property *properties;
+        struct  property *deadprops;    /* removed properties */
+        struct  device_node *parent;
+        struct  device_node *child;
+        struct  device_node *sibling;
+        struct  device_node *next;      /* next device of same type */
+        struct  device_node *allnext;   /* next in list of all nodes */
+        struct  proc_dir_entry *pde;    /* this node's proc directory */
+        struct  kref kref;
+        unsigned long _flags;
+        void    *data;
+#if defined(CONFIG_SPARC)
+        char    *path_component_name;
+        unsigned int unique_id;
+        struct of_irq_controller *irq_trans;
+#endif
+};
+
+static inline struct device_node *of_find_node_by_path(const char *path)
+{
+	return NULL;
+}
+static inline const void *of_get_property(const struct device_node *node,
+                                const char *name,
+                                int *lenp)
+{
+	return NULL;
+}
+static inline void of_node_put(struct device_node *node)
+{ }
+
+/* From arch/powerpc/include/asm/hvcall.h */
+
+#define H_SUCCESS       0
+#define H_BUSY          1       /* Hardware busy -- retry later */
+
+#define H_RESOURCE      -16
+
+#define H_LONG_BUSY_START_RANGE         9900  /* Start of long busy range */
+#define H_LONG_BUSY_END_RANGE           9905  /* End of long busy range */
+/* Long Busy is a condition that can be returned by the firmware
+ * when a call cannot be completed now, but the identical call
+ * should be retried later.  This prevents calls blocking in the
+ * firmware for long periods of time.  Annoyingly the firmware can return
+ * a range of return codes, hinting at how long we should wait before
+ * retrying.  If you don't care for the hint, the macro below is a good
+ * way to check for the long_busy return codes
+ */
+#define H_IS_LONG_BUSY(x)  ((x >= H_LONG_BUSY_START_RANGE) \
+                             && (x <= H_LONG_BUSY_END_RANGE))
+
+#define H_REG_CRQ               0xFC
+#define H_FREE_CRQ              0x100
+#define H_SEND_CRQ              0x108
+#define H_COPY_RDMA             0x110
+
+static inline long plpar_hcall_norets(unsigned long opcode, ...)
+{
+	return 0;
+}
+
+
+/* From arch/powerpc/include/asm/prom.h */
+
+/* From arch/powerpc/include/asm/vio.h */
+
+/**
+ * vio_dev - This structure is used to describe virtual I/O devices.
+ *
+ * @desired: set from return of driver's get_desired_dma() function
+ * @entitled: bytes of IO data that has been reserved for this device.
+ * @allocated: bytes of IO data currently in use by the device.
+ * @allocs_failed: number of DMA failures due to insufficient entitlement.
+ */
+struct vio_dev {
+	const char *name;
+	const char *type;
+	uint32_t unit_address;
+	unsigned int irq;
+	struct {
+		size_t desired;
+		size_t entitled;
+		size_t allocated;
+		atomic_t allocs_failed;
+	} cmo;
+	struct device dev;
+};
+
+struct vio_driver {
+        const struct vio_device_id *id_table;
+        int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
+        int (*remove)(struct vio_dev *dev);
+        /* A driver must have a get_desired_dma() function to
+         * be loaded in a CMO environment if it uses DMA.
+         */
+        unsigned long (*get_desired_dma)(struct vio_dev *dev);
+        struct device_driver driver;
+};
+
+static inline int vio_register_driver(struct vio_driver *drv)
+{
+	return 0;
+}
+static inline void vio_unregister_driver(struct vio_driver *drv)
+{ }
+static inline const void *vio_get_attribute(struct vio_dev *vdev, char *which,
+                int *length)
+{
+	*length = 0;
+	return NULL;
+}
+static inline struct vio_dev *vio_register_device_node(
+                struct device_node *node_vdev)
+{
+	return NULL;
+}
+static inline int vio_enable_interrupts(struct vio_dev *dev)
+{
+        return 0;
+}
+static inline int vio_disable_interrupts(struct vio_dev *dev)
+{
+        return 0;
+}
diff --git a/ibmvstgt/src/ibmvstgt.c b/ibmvstgt/src/ibmvstgt.c
index 30793bf91..a3585c1e4 100644
--- a/ibmvstgt/src/ibmvstgt.c
+++ b/ibmvstgt/src/ibmvstgt.c
@@ -29,10 +29,16 @@
 #include <scsi/scsi_transport_srp.h>
 #include <scsi/scsi_tgt.h>
 #include <scsi/libsrp.h>
-//#include <asm/hvcall.h>
 #include <asm/iommu.h>
-//#include <asm/prom.h>
-//#include <asm/vio.h>
+#ifdef __powerpc__
+#include <asm/hvcall.h>
+#include <asm/prom.h>
+#include <asm/vio.h>
+#else
+#include <linux/mod_devicetable.h>
+#include <linux/of.h>
+#include "dummy_powerpc_defs.h"
+#endif
 
 #include "ibmvscsi.h"