hypervisor/src/greatlakes/common/src/hcall_vpci.s

/*
* ========== Copyright Header Begin ==========================================
*
* Hypervisor Software File: hcall_vpci.s
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
*  - Do no alter or remove copyright notices
*
*  - Redistribution and use of this software in source and binary forms, with
*    or without modification, are permitted provided that the following
*    conditions are met:
*
*  - Redistribution of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*
*  - Redistribution in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
*    Neither the name of Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
*     This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
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* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or maintenance of
* any nuclear facility.
*
* ========== Copyright Header End ============================================
*/
/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

        .ident  "@(#)hcall_vpci.s       1.8     07/07/17 SMI"

#include <sys/asm_linkage.h>
#include <hypervisor.h>
#include <sparcv9/misc.h>
#include <asi.h>
#include <hprivregs.h>
#include <vdev_intr.h>
#include <offsets.h>
#include <guest.h>
#include <util.h>

#define CHECK_PCIE_BDF(device, scr1)     \
        set     PCIE_BDF_MASK, scr1     ;\
        andncc  device, scr1, %g0       ;\
        bnz,pn  %xcc, herr_inval        ;\
        nop

#define CHECK_PCIE_CFG_OFFSET(offset, scr1)      \
        set     PCIE_CFG_OFFSET_MASK, scr1      ;\
        andncc  offset, scr1, %g0               ;\
        bnz,pn  %xcc, herr_inval                ;\
        nop

#define CHECK_OFFSET_SIZE_ALIGN(offset, size, max_size, scr1)    \
        brz,pn  size, herr_inval                                ;\
        sub     size, 1, scr1                                   ;\
        btst    scr1, size                                      ;\
        /* Check for power two size */                          ;\
        bnz,pn  %xcc, herr_inval                                ;\
        .empty                                                  ;\
        cmp     size, max_size                                  ;\
        /* Check for size > max_size */                         ;\
        bgu,pn  %xcc, herr_inval                                ;\
        .empty                                                  ;\
        /* Check for offset aligned on size */                  ;\
        btst    offset, scr1                                    ;\
        bnz,pn  %xcc, herr_badalign                             ;\
        .empty

/*
 * Return code template
 */
        ENTRY_NP(hcall_vpci_iommu_map)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_MAP, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_iommu_map)

        ENTRY_NP(hcall_vpci_iommu_map_v2)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_MAP_V2, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_iommu_map_v2)
        ENTRY_NP(hcall_vpci_iommu_getmap_v2)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_GETMAP_V2, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_iommu_getmap_v2)

        ENTRY_NP(hcall_vpci_iommu_getmap)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_GETMAP, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_iommu_getmap)

        ENTRY_NP(hcall_vpci_iommu_unmap)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_UNMAP, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_iommu_unmap)

        ENTRY_NP(hcall_vpci_iommu_getbypass)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_GETBYPASS, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_iommu_getbypass)

/*
 * config_get
 *
 * arg0 dev config pa (%o0)
 * arg1 PCI device (%o1)
 * arg2 offset (%o2)
 * arg3 size (%o3)
 * --
 * ret0 status (%o0)
 * ret1 error_flag (%o1)
 * ret2 value (%o2)
 */
        ENTRY_NP(hcall_vpci_config_get)
        CHECK_PCIE_BDF(%o1, %g2)
        CHECK_PCIE_CFG_OFFSET(%o2, %g2)
        CHECK_OFFSET_SIZE_ALIGN(%o2, %o3, SZ_WORD, %g2)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_CONFIGGET, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_config_get)

/*
 * config_put
 *
 * arg0 dev config pa (%o0)
 * arg1 PCI device (%o1)
 * arg2 offset (%o2)
 * arg3 size (%o3)
 * arg4 data (%o4)
 * --
 * ret0 status (%o0)
 */
        ENTRY_NP(hcall_vpci_config_put)
        CHECK_PCIE_BDF(%o1, %g2)
        CHECK_PCIE_CFG_OFFSET(%o2, %g2)
        CHECK_OFFSET_SIZE_ALIGN(%o2, %o3, SZ_WORD, %g2)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_CONFIGPUT, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_config_put)

/*
 * io_peek
 *
 * %g1 = PIU Cookie Pointer
 * arg0 devhandle (%o0)
 * arg1 r_addr (%o1)
 * arg2 size (%o2)
 * --
 * ret0 status (%o0)
 * ret1 error? (%o1)
 * ret2 data (%o2)
 */
        ENTRY_NP(hcall_vpci_io_peek)
        CHECK_OFFSET_SIZE_ALIGN(%o1, %o2, SZ_LONG, %g2)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_IOPEEK, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_io_peek)

/*
 * io_poke
 *
 * %g1 = PIU Cookie Pointer
 * arg0 devhandle (%o0)
 * arg1 r_addr (%o1)
 * arg2 size (%o2)
 * arg3 data (%o3)
 * arg4 PCI device (%o4)
 * --
 * ret0 status (%o0)
 * ret1 error? (%o1)
 */
        ENTRY_NP(hcall_vpci_io_poke)
        CHECK_PCIE_BDF(%o4, %g2)
        CHECK_OFFSET_SIZE_ALIGN(%o1, %o2, SZ_LONG, %g2)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_IOPOKE, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_io_poke)

/*
 * dma_sync
 *
 * %g1 = Fire Cookie Pointer
 * arg0 devhandle (%o0)
 * arg1 r_addr (%o1)
 * arg2 size (%o2)
 * arg3 direction (%o3) (one or both of 1: for device 2: for cpu)
 * --
 * ret0 status (%o0)
 * ret1 #bytes synced (%o1)
 */
        ENTRY_NP(hcall_vpci_dma_sync)
        brz,pn  %o3, herr_inval
        andncc  %o3, (HVIO_DMA_SYNC_CPU | HVIO_DMA_SYNC_DEVICE), %g0
        bnz,pn  %xcc, herr_inval
        nop
        brz,pn  %o2, herr_inval
        .empty
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_DMASYNC, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_dma_sync)

        ENTRY_NP(hcall_vpci_get_perfreg)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_GETPERFREG, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_get_perfreg)

        ENTRY_NP(hcall_vpci_set_perfreg)
        JMPL_DEVHANDLE2DEVOP(%o0, DEVOPSVEC_SETPERFREG, %g1, %g2, %g3, herr_inval)
        SET_SIZE(hcall_vpci_set_perfreg)