mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 20:42:39 +00:00
ce08715021
With feedback and suggestions from Sam Ravnborg. Signed-off-by: David S. Miller <davem@davemloft.net>
80 lines
1.5 KiB
ArmAsm
80 lines
1.5 KiB
ArmAsm
/* n2-asm.S: Niagara2 RNG hypervisor call assembler.
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*
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* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
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*/
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#include <linux/linkage.h>
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#include <asm/hypervisor.h>
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#include "n2rng.h"
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.text
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ENTRY(sun4v_rng_get_diag_ctl)
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mov HV_FAST_RNG_GET_DIAG_CTL, %o5
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ta HV_FAST_TRAP
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retl
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nop
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ENDPROC(sun4v_rng_get_diag_ctl)
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ENTRY(sun4v_rng_ctl_read_v1)
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mov %o1, %o3
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mov %o2, %o4
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mov HV_FAST_RNG_CTL_READ, %o5
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ta HV_FAST_TRAP
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stx %o1, [%o3]
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retl
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stx %o2, [%o4]
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ENDPROC(sun4v_rng_ctl_read_v1)
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ENTRY(sun4v_rng_ctl_read_v2)
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save %sp, -192, %sp
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mov %i0, %o0
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mov %i1, %o1
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mov HV_FAST_RNG_CTL_READ, %o5
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ta HV_FAST_TRAP
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stx %o1, [%i2]
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stx %o2, [%i3]
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stx %o3, [%i4]
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stx %o4, [%i5]
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ret
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restore %g0, %o0, %o0
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ENDPROC(sun4v_rng_ctl_read_v2)
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ENTRY(sun4v_rng_ctl_write_v1)
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mov %o3, %o4
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mov HV_FAST_RNG_CTL_WRITE, %o5
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ta HV_FAST_TRAP
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retl
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stx %o1, [%o4]
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ENDPROC(sun4v_rng_ctl_write_v1)
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ENTRY(sun4v_rng_ctl_write_v2)
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mov HV_FAST_RNG_CTL_WRITE, %o5
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ta HV_FAST_TRAP
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retl
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nop
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ENDPROC(sun4v_rng_ctl_write_v2)
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ENTRY(sun4v_rng_data_read_diag_v1)
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mov %o2, %o4
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mov HV_FAST_RNG_DATA_READ_DIAG, %o5
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ta HV_FAST_TRAP
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retl
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stx %o1, [%o4]
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ENDPROC(sun4v_rng_data_read_diag_v1)
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ENTRY(sun4v_rng_data_read_diag_v2)
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mov %o3, %o4
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mov HV_FAST_RNG_DATA_READ_DIAG, %o5
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ta HV_FAST_TRAP
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retl
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stx %o1, [%o4]
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ENDPROC(sun4v_rng_data_read_diag_v2)
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ENTRY(sun4v_rng_data_read)
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mov %o1, %o4
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mov HV_FAST_RNG_DATA_READ, %o5
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ta HV_FAST_TRAP
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retl
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stx %o1, [%o4]
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ENDPROC(sun4v_rng_data_read)
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