/* SPDX-License-Identifier: GPL-2.0 */
/* pci_sun4v_asm: Hypervisor calls for PCI support.
 *
 * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net>
 */

#include <linux/linkage.h>
#include <asm/hypervisor.h>

        /* %o0: devhandle
         * %o1: tsbid
         * %o2: num ttes
         * %o3: io_attributes
         * %o4: io_page_list phys address
         *
         * returns %o0: -status if status was non-zero, else
         *         %o0: num pages mapped
         */
ENTRY(pci_sun4v_iommu_map)
        mov     %o5, %g1
        mov     HV_FAST_PCI_IOMMU_MAP, %o5
        ta      HV_FAST_TRAP
        brnz,pn %o0, 1f
         sub    %g0, %o0, %o0
        mov     %o1, %o0
1:      retl
         nop
ENDPROC(pci_sun4v_iommu_map)

        /* %o0: devhandle
         * %o1: tsbid
         * %o2: num ttes
         *
         * returns %o0: num ttes demapped
         */
ENTRY(pci_sun4v_iommu_demap)
        mov     HV_FAST_PCI_IOMMU_DEMAP, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o1, %o0
ENDPROC(pci_sun4v_iommu_demap)

        /* %o0: devhandle
         * %o1: tsbid
         * %o2: &io_attributes
         * %o3: &real_address
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_iommu_getmap)
        mov     %o2, %o4
        mov     HV_FAST_PCI_IOMMU_GETMAP, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o4]
        stx     %o2, [%o3]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_iommu_getmap)

        /* %o0: devhandle
         * %o1: pci_device
         * %o2: pci_config_offset
         * %o3: size
         *
         * returns %o0: data
         *
         * If there is an error, the data will be returned
         * as all 1's.
         */
ENTRY(pci_sun4v_config_get)
        mov     HV_FAST_PCI_CONFIG_GET, %o5
        ta      HV_FAST_TRAP
        brnz,a,pn %o1, 1f
         mov    -1, %o2
1:      retl
         mov    %o2, %o0
ENDPROC(pci_sun4v_config_get)

        /* %o0: devhandle
         * %o1: pci_device
         * %o2: pci_config_offset
         * %o3: size
         * %o4: data
         *
         * returns %o0: status
         *
         * status will be zero if the operation completed
         * successfully, else -1 if not
         */
ENTRY(pci_sun4v_config_put)
        mov     HV_FAST_PCI_CONFIG_PUT, %o5
        ta      HV_FAST_TRAP
        brnz,a,pn %o1, 1f
         mov    -1, %o1
1:      retl
         mov    %o1, %o0
ENDPROC(pci_sun4v_config_put)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: msiq phys address
         * %o3: num entries
         *
         * returns %o0: status
         *
         * status will be zero if the operation completed
         * successfully, else -1 if not
         */
ENTRY(pci_sun4v_msiq_conf)
        mov     HV_FAST_PCI_MSIQ_CONF, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_conf)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: &msiq_phys_addr
         * %o3: &msiq_num_entries
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msiq_info)
        mov     %o2, %o4
        mov     HV_FAST_PCI_MSIQ_INFO, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o4]
        stx     %o2, [%o3]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_info)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: &valid
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msiq_getvalid)
        mov     HV_FAST_PCI_MSIQ_GETVALID, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_getvalid)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: valid
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msiq_setvalid)
        mov     HV_FAST_PCI_MSIQ_SETVALID, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_setvalid)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: &state
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msiq_getstate)
        mov     HV_FAST_PCI_MSIQ_GETSTATE, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_getstate)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: state
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msiq_setstate)
        mov     HV_FAST_PCI_MSIQ_SETSTATE, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_setstate)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: &head
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msiq_gethead)
        mov     HV_FAST_PCI_MSIQ_GETHEAD, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_gethead)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: head
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msiq_sethead)
        mov     HV_FAST_PCI_MSIQ_SETHEAD, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_sethead)

        /* %o0: devhandle
         * %o1: msiqid
         * %o2: &tail
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msiq_gettail)
        mov     HV_FAST_PCI_MSIQ_GETTAIL, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msiq_gettail)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: &valid
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msi_getvalid)
        mov     HV_FAST_PCI_MSI_GETVALID, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msi_getvalid)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: valid
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msi_setvalid)
        mov     HV_FAST_PCI_MSI_SETVALID, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msi_setvalid)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: &msiq
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msi_getmsiq)
        mov     HV_FAST_PCI_MSI_GETMSIQ, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msi_getmsiq)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: msitype
         * %o3: msiq
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msi_setmsiq)
        mov     HV_FAST_PCI_MSI_SETMSIQ, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msi_setmsiq)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: &state
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msi_getstate)
        mov     HV_FAST_PCI_MSI_GETSTATE, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msi_getstate)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: state
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msi_setstate)
        mov     HV_FAST_PCI_MSI_SETSTATE, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msi_setstate)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: &msiq
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msg_getmsiq)
        mov     HV_FAST_PCI_MSG_GETMSIQ, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msg_getmsiq)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: msiq
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msg_setmsiq)
        mov     HV_FAST_PCI_MSG_SETMSIQ, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msg_setmsiq)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: &valid
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msg_getvalid)
        mov     HV_FAST_PCI_MSG_GETVALID, %o5
        ta      HV_FAST_TRAP
        stx     %o1, [%o2]
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msg_getvalid)

        /* %o0: devhandle
         * %o1: msinum
         * %o2: valid
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_msg_setvalid)
        mov     HV_FAST_PCI_MSG_SETVALID, %o5
        ta      HV_FAST_TRAP
        retl
         mov    %o0, %o0
ENDPROC(pci_sun4v_msg_setvalid)

        /*
         * %o0: devhandle
         * %o1: r_addr
         * %o2: size
         * %o3: pagesize
         * %o4: virt
         * %o5: &iotsb_num/&iotsb_handle
         *
         * returns %o0: status
         *         %o1: iotsb_num/iotsb_handle
         */
ENTRY(pci_sun4v_iotsb_conf)
        mov     %o5, %g1
        mov     HV_FAST_PCI_IOTSB_CONF, %o5
        ta      HV_FAST_TRAP
        retl
         stx    %o1, [%g1]
ENDPROC(pci_sun4v_iotsb_conf)

        /*
         * %o0: devhandle
         * %o1: iotsb_num/iotsb_handle
         * %o2: pci_device
         *
         * returns %o0: status
         */
ENTRY(pci_sun4v_iotsb_bind)
        mov     HV_FAST_PCI_IOTSB_BIND, %o5
        ta      HV_FAST_TRAP
        retl
         nop
ENDPROC(pci_sun4v_iotsb_bind)

        /*
         * %o0: devhandle
         * %o1: iotsb_num/iotsb_handle
         * %o2: index_count
         * %o3: iotte_attributes
         * %o4: io_page_list_p
         * %o5: &mapped
         *
         * returns %o0: status
         *         %o1: #mapped
         */
ENTRY(pci_sun4v_iotsb_map)
        mov     %o5, %g1
        mov     HV_FAST_PCI_IOTSB_MAP, %o5
        ta      HV_FAST_TRAP
        retl
         stx    %o1, [%g1]
ENDPROC(pci_sun4v_iotsb_map)

        /*
         * %o0: devhandle
         * %o1: iotsb_num/iotsb_handle
         * %o2: iotsb_index
         * %o3: #iottes
         * %o4: &demapped
         *
         * returns %o0: status
         *         %o1: #demapped
         */
ENTRY(pci_sun4v_iotsb_demap)
        mov     HV_FAST_PCI_IOTSB_DEMAP, %o5
        ta      HV_FAST_TRAP
        retl
         stx    %o1, [%o4]
ENDPROC(pci_sun4v_iotsb_demap)