/* SPDX-License-Identifier: GPL-2.0 */
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/* n2_asm.S: Hypervisor calls for NCS support.
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*
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* Copyright (C) 2009 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 "n2_core.h"
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/* o0: queue type
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* o1: RA of queue
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* o2: num entries in queue
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* o3: address of queue handle return
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*/
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ENTRY(sun4v_ncs_qconf)
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mov HV_FAST_NCS_QCONF, %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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nop
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ENDPROC(sun4v_ncs_qconf)
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/* %o0: queue handle
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* %o1: address of queue type return
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* %o2: address of queue base address return
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* %o3: address of queue num entries return
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*/
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ENTRY(sun4v_ncs_qinfo)
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mov %o1, %g1
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mov %o2, %g2
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mov %o3, %g3
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mov HV_FAST_NCS_QINFO, %o5
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ta HV_FAST_TRAP
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stx %o1, [%g1]
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stx %o2, [%g2]
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stx %o3, [%g3]
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retl
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nop
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ENDPROC(sun4v_ncs_qinfo)
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/* %o0: queue handle
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* %o1: address of head offset return
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*/
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ENTRY(sun4v_ncs_gethead)
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mov %o1, %o2
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mov HV_FAST_NCS_GETHEAD, %o5
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ta HV_FAST_TRAP
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stx %o1, [%o2]
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retl
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nop
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ENDPROC(sun4v_ncs_gethead)
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/* %o0: queue handle
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* %o1: address of tail offset return
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*/
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ENTRY(sun4v_ncs_gettail)
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mov %o1, %o2
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mov HV_FAST_NCS_GETTAIL, %o5
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ta HV_FAST_TRAP
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stx %o1, [%o2]
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retl
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nop
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ENDPROC(sun4v_ncs_gettail)
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/* %o0: queue handle
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* %o1: new tail offset
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*/
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ENTRY(sun4v_ncs_settail)
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mov HV_FAST_NCS_SETTAIL, %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_ncs_settail)
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/* %o0: queue handle
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* %o1: address of devino return
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*/
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ENTRY(sun4v_ncs_qhandle_to_devino)
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mov %o1, %o2
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mov HV_FAST_NCS_QHANDLE_TO_DEVINO, %o5
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ta HV_FAST_TRAP
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stx %o1, [%o2]
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retl
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nop
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ENDPROC(sun4v_ncs_qhandle_to_devino)
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/* %o0: queue handle
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* %o1: new head offset
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*/
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ENTRY(sun4v_ncs_sethead_marker)
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mov HV_FAST_NCS_SETHEAD_MARKER, %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_ncs_sethead_marker)
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