1 files changed, 120 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
new file mode 100644
index 0000000000..382f8c5b0e
--- /dev/null
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -0,0 +1,120 @@
+#ifndef _PSERIES_PLPAR_WRAPPERS_H
+#define _PSERIES_PLPAR_WRAPPERS_H
+
+#include <asm/hvcall.h>
+
+static inline long poll_pending(void)
+{
+        unsigned long dummy;
+        return plpar_hcall(H_POLL_PENDING, 0, 0, 0, 0, &dummy, &dummy, &dummy);
+}
+
+static inline long prod_processor(void)
+{
+        plpar_hcall_norets(H_PROD);
+        return 0;
+}
+
+static inline long cede_processor(void)
+{
+        plpar_hcall_norets(H_CEDE);
+        return 0;
+}
+
+static inline long vpa_call(unsigned long flags, unsigned long cpu,
+                unsigned long vpa)
+{
+        /* flags are in bits 16-18 (counting from most significant bit) */
+        flags = flags << (63 - 18);
+
+        return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
+}
+
+static inline long unregister_vpa(unsigned long cpu, unsigned long vpa)
+{
+        return vpa_call(0x5, cpu, vpa);
+}
+
+static inline long register_vpa(unsigned long cpu, unsigned long vpa)
+{
+        return vpa_call(0x1, cpu, vpa);
+}
+
+extern void vpa_init(int cpu);
+
+static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
+                unsigned long avpn, unsigned long *old_pteh_ret,
+                unsigned long *old_ptel_ret)
+{
+        unsigned long dummy;
+        return plpar_hcall(H_REMOVE, flags, ptex, avpn, 0, old_pteh_ret,
+                        old_ptel_ret, &dummy);
+}
+
+static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
+                unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
+{
+        unsigned long dummy;
+        return plpar_hcall(H_READ, flags, ptex, 0, 0, old_pteh_ret,
+                        old_ptel_ret, &dummy);
+}
+
+static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
+                unsigned long avpn)
+{
+        return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
+}
+
+static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
+                unsigned long *tce_ret)
+{
+        unsigned long dummy;
+        return plpar_hcall(H_GET_TCE, liobn, ioba, 0, 0, tce_ret, &dummy,
+                        &dummy);
+}
+
+static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
+                unsigned long tceval)
+{
+        return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
+}
+
+static inline long plpar_tce_put_indirect(unsigned long liobn,
+                unsigned long ioba, unsigned long page, unsigned long count)
+{
+        return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
+}
+
+static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
+                unsigned long tceval, unsigned long count)
+{
+        return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
+}
+
+static inline long plpar_get_term_char(unsigned long termno,
+                unsigned long *len_ret, char *buf_ret)
+{
+        unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
+        return plpar_hcall(H_GET_TERM_CHAR, termno, 0, 0, 0, len_ret,
+                        lbuf + 0, lbuf + 1);
+}
+
+static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
+                const char *buffer)
+{
+        unsigned long *lbuf = (unsigned long *)buffer;  /* TODO: alignment? */
+        return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
+                        lbuf[1]);
+}
+
+static inline long plpar_set_xdabr(unsigned long address, unsigned long flags)
+{
+        return plpar_hcall_norets(H_SET_XDABR, address, flags);
+}
+
+static inline long plpar_set_dabr(unsigned long val)
+{
+        return plpar_hcall_norets(H_SET_DABR, val);
+}
+
+#endif /* _PSERIES_PLPAR_WRAPPERS_H */