Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / char / hw_random / n2-asm.S

diff --git a/kernel/drivers/char/hw_random/n2-asm.S b/kernel/drivers/char/hw_random/n2-asm.S
new file mode 100644 (file)
index 0000000..9b6eb5c
--- /dev/null
+++ b/kernel/drivers/char/hw_random/n2-asm.S
@@ -0,0 +1,79 @@
+/* n2-asm.S: Niagara2 RNG hypervisor call assembler.
+ *
+ * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/linkage.h>
+#include <asm/hypervisor.h>
+#include "n2rng.h"
+
+       .text
+
+ENTRY(sun4v_rng_get_diag_ctl)
+       mov     HV_FAST_RNG_GET_DIAG_CTL, %o5
+       ta      HV_FAST_TRAP
+       retl
+        nop
+ENDPROC(sun4v_rng_get_diag_ctl)
+
+ENTRY(sun4v_rng_ctl_read_v1)
+       mov     %o1, %o3
+       mov     %o2, %o4
+       mov     HV_FAST_RNG_CTL_READ, %o5
+       ta      HV_FAST_TRAP
+       stx     %o1, [%o3]
+       retl
+        stx    %o2, [%o4]
+ENDPROC(sun4v_rng_ctl_read_v1)
+
+ENTRY(sun4v_rng_ctl_read_v2)
+       save    %sp, -192, %sp
+       mov     %i0, %o0
+       mov     %i1, %o1
+       mov     HV_FAST_RNG_CTL_READ, %o5
+       ta      HV_FAST_TRAP
+       stx     %o1, [%i2]
+       stx     %o2, [%i3]
+       stx     %o3, [%i4]
+       stx     %o4, [%i5]
+       ret
+       restore %g0, %o0, %o0
+ENDPROC(sun4v_rng_ctl_read_v2)
+
+ENTRY(sun4v_rng_ctl_write_v1)
+       mov     %o3, %o4
+       mov     HV_FAST_RNG_CTL_WRITE, %o5
+       ta      HV_FAST_TRAP
+       retl
+        stx    %o1, [%o4]
+ENDPROC(sun4v_rng_ctl_write_v1)
+
+ENTRY(sun4v_rng_ctl_write_v2)
+       mov     HV_FAST_RNG_CTL_WRITE, %o5
+       ta      HV_FAST_TRAP
+       retl
+        nop
+ENDPROC(sun4v_rng_ctl_write_v2)
+
+ENTRY(sun4v_rng_data_read_diag_v1)
+       mov     %o2, %o4
+       mov     HV_FAST_RNG_DATA_READ_DIAG, %o5
+       ta      HV_FAST_TRAP
+       retl
+        stx    %o1, [%o4]
+ENDPROC(sun4v_rng_data_read_diag_v1)
+
+ENTRY(sun4v_rng_data_read_diag_v2)
+       mov     %o3, %o4
+       mov     HV_FAST_RNG_DATA_READ_DIAG, %o5
+       ta      HV_FAST_TRAP
+       retl
+        stx    %o1, [%o4]
+ENDPROC(sun4v_rng_data_read_diag_v2)
+
+ENTRY(sun4v_rng_data_read)
+       mov     %o1, %o4
+       mov     HV_FAST_RNG_DATA_READ, %o5
+       ta      HV_FAST_TRAP
+       retl
+        stx    %o1, [%o4]
+ENDPROC(sun4v_rng_data_read)