1 files changed, 89 insertions, 0 deletions

diff --git a/arch/sparc/prom/devops_32.c b/arch/sparc/prom/devops_32.c
new file mode 100644
index 000000000000..9f1a95c91ad1
--- /dev/null
+++ b/arch/sparc/prom/devops_32.c
@@ -0,0 +1,89 @@
+/*
+ * devops.c:  Device operations using the PROM.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+extern void restore_current(void);
+
+/* Open the device described by the string 'dstr'.  Returns the handle
+ * to that device used for subsequent operations on that device.
+ * Returns -1 on failure.
+ */
+int
+prom_devopen(char *dstr)
+{
+        int handle;
+        unsigned long flags;
+        spin_lock_irqsave(&prom_lock, flags);
+        switch(prom_vers) {
+        case PROM_V0:
+                handle = (*(romvec->pv_v0devops.v0_devopen))(dstr);
+                if(handle == 0) handle = -1;
+                break;
+        case PROM_V2:
+        case PROM_V3:
+                handle = (*(romvec->pv_v2devops.v2_dev_open))(dstr);
+                break;
+        default:
+                handle = -1;
+                break;
+        };
+        restore_current();
+        spin_unlock_irqrestore(&prom_lock, flags);
+
+        return handle;
+}
+
+/* Close the device described by device handle 'dhandle'. */
+int
+prom_devclose(int dhandle)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&prom_lock, flags);
+        switch(prom_vers) {
+        case PROM_V0:
+                (*(romvec->pv_v0devops.v0_devclose))(dhandle);
+                break;
+        case PROM_V2:
+        case PROM_V3:
+                (*(romvec->pv_v2devops.v2_dev_close))(dhandle);
+                break;
+        default:
+                break;
+        };
+        restore_current();
+        spin_unlock_irqrestore(&prom_lock, flags);
+        return 0;
+}
+
+/* Seek to specified location described by 'seekhi' and 'seeklo'
+ * for device 'dhandle'.
+ */
+void
+prom_seek(int dhandle, unsigned int seekhi, unsigned int seeklo)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&prom_lock, flags);
+        switch(prom_vers) {
+        case PROM_V0:
+                (*(romvec->pv_v0devops.v0_seekdev))(dhandle, seekhi, seeklo);
+                break;
+        case PROM_V2:
+        case PROM_V3:
+                (*(romvec->pv_v2devops.v2_dev_seek))(dhandle, seekhi, seeklo);
+                break;
+        default:
+                break;
+        };
+        restore_current();
+        spin_unlock_irqrestore(&prom_lock, flags);
+
+        return;
+}