LXR linux/arch/sparc/kernel/pci_sun4v

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* pci_sun4v_asm: Hypervisor calls for PCI support.
   3 *
   4 * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net>
   5 */
   6
   7#include <linux/linkage.h>
   8#include <asm/hypervisor.h>
   9
  10        /* %o0: devhandle
  11         * %o1: tsbid
  12         * %o2: num ttes
  13         * %o3: io_attributes
  14         * %o4: io_page_list phys address
  15         *
  16         * returns %o0: -status if status was non-zero, else
  17         *         %o0: num pages mapped
  18         */
  19ENTRY(pci_sun4v_iommu_map)
  20        mov     %o5, %g1
  21        mov     HV_FAST_PCI_IOMMU_MAP, %o5
  22        ta      HV_FAST_TRAP
  23        brnz,pn %o0, 1f
  24         sub    %g0, %o0, %o0
  25        mov     %o1, %o0
  261:      retl
  27         nop
  28ENDPROC(pci_sun4v_iommu_map)
  29
  30        /* %o0: devhandle
  31         * %o1: tsbid
  32         * %o2: num ttes
  33         *
  34         * returns %o0: num ttes demapped
  35         */
  36ENTRY(pci_sun4v_iommu_demap)
  37        mov     HV_FAST_PCI_IOMMU_DEMAP, %o5
  38        ta      HV_FAST_TRAP
  39        retl
  40         mov    %o1, %o0
  41ENDPROC(pci_sun4v_iommu_demap)
  42
  43        /* %o0: devhandle
  44         * %o1: tsbid
  45         * %o2: &io_attributes
  46         * %o3: &real_address
  47         *
  48         * returns %o0: status
  49         */
  50ENTRY(pci_sun4v_iommu_getmap)
  51        mov     %o2, %o4
  52        mov     HV_FAST_PCI_IOMMU_GETMAP, %o5
  53        ta      HV_FAST_TRAP
  54        stx     %o1, [%o4]
  55        stx     %o2, [%o3]
  56        retl
  57         mov    %o0, %o0
  58ENDPROC(pci_sun4v_iommu_getmap)
  59
  60        /* %o0: devhandle
  61         * %o1: pci_device
  62         * %o2: pci_config_offset
  63         * %o3: size
  64         *
  65         * returns %o0: data
  66         *
  67         * If there is an error, the data will be returned
  68         * as all 1's.
  69         */
  70ENTRY(pci_sun4v_config_get)
  71        mov     HV_FAST_PCI_CONFIG_GET, %o5
  72        ta      HV_FAST_TRAP
  73        brnz,a,pn %o1, 1f
  74         mov    -1, %o2
  751:      retl
  76         mov    %o2, %o0
  77ENDPROC(pci_sun4v_config_get)
  78
  79        /* %o0: devhandle
  80         * %o1: pci_device
  81         * %o2: pci_config_offset
  82         * %o3: size
  83         * %o4: data
  84         *
  85         * returns %o0: status
  86         *
  87         * status will be zero if the operation completed
  88         * successfully, else -1 if not
  89         */
  90ENTRY(pci_sun4v_config_put)
  91        mov     HV_FAST_PCI_CONFIG_PUT, %o5
  92        ta      HV_FAST_TRAP
  93        brnz,a,pn %o1, 1f
  94         mov    -1, %o1
  951:      retl
  96         mov    %o1, %o0
  97ENDPROC(pci_sun4v_config_put)
  98
  99        /* %o0: devhandle
 100         * %o1: msiqid
 101         * %o2: msiq phys address
 102         * %o3: num entries
 103         *
 104         * returns %o0: status
 105         *
 106         * status will be zero if the operation completed
 107         * successfully, else -1 if not
 108         */
 109ENTRY(pci_sun4v_msiq_conf)
 110        mov     HV_FAST_PCI_MSIQ_CONF, %o5
 111        ta      HV_FAST_TRAP
 112        retl
 113         mov    %o0, %o0
 114ENDPROC(pci_sun4v_msiq_conf)
 115
 116        /* %o0: devhandle
 117         * %o1: msiqid
 118         * %o2: &msiq_phys_addr
 119         * %o3: &msiq_num_entries
 120         *
 121         * returns %o0: status
 122         */
 123ENTRY(pci_sun4v_msiq_info)
 124        mov     %o2, %o4
 125        mov     HV_FAST_PCI_MSIQ_INFO, %o5
 126        ta      HV_FAST_TRAP
 127        stx     %o1, [%o4]
 128        stx     %o2, [%o3]
 129        retl
 130         mov    %o0, %o0
 131ENDPROC(pci_sun4v_msiq_info)
 132
 133        /* %o0: devhandle
 134         * %o1: msiqid
 135         * %o2: &valid
 136         *
 137         * returns %o0: status
 138         */
 139ENTRY(pci_sun4v_msiq_getvalid)
 140        mov     HV_FAST_PCI_MSIQ_GETVALID, %o5
 141        ta      HV_FAST_TRAP
 142        stx     %o1, [%o2]
 143        retl
 144         mov    %o0, %o0
 145ENDPROC(pci_sun4v_msiq_getvalid)
 146
 147        /* %o0: devhandle
 148         * %o1: msiqid
 149         * %o2: valid
 150         *
 151         * returns %o0: status
 152         */
 153ENTRY(pci_sun4v_msiq_setvalid)
 154        mov     HV_FAST_PCI_MSIQ_SETVALID, %o5
 155        ta      HV_FAST_TRAP
 156        retl
 157         mov    %o0, %o0
 158ENDPROC(pci_sun4v_msiq_setvalid)
 159
 160        /* %o0: devhandle
 161         * %o1: msiqid
 162         * %o2: &state
 163         *
 164         * returns %o0: status
 165         */
 166ENTRY(pci_sun4v_msiq_getstate)
 167        mov     HV_FAST_PCI_MSIQ_GETSTATE, %o5
 168        ta      HV_FAST_TRAP
 169        stx     %o1, [%o2]
 170        retl
 171         mov    %o0, %o0
 172ENDPROC(pci_sun4v_msiq_getstate)
 173
 174        /* %o0: devhandle
 175         * %o1: msiqid
 176         * %o2: state
 177         *
 178         * returns %o0: status
 179         */
 180ENTRY(pci_sun4v_msiq_setstate)
 181        mov     HV_FAST_PCI_MSIQ_SETSTATE, %o5
 182        ta      HV_FAST_TRAP
 183        retl
 184         mov    %o0, %o0
 185ENDPROC(pci_sun4v_msiq_setstate)
 186
 187        /* %o0: devhandle
 188         * %o1: msiqid
 189         * %o2: &head
 190         *
 191         * returns %o0: status
 192         */
 193ENTRY(pci_sun4v_msiq_gethead)
 194        mov     HV_FAST_PCI_MSIQ_GETHEAD, %o5
 195        ta      HV_FAST_TRAP
 196        stx     %o1, [%o2]
 197        retl
 198         mov    %o0, %o0
 199ENDPROC(pci_sun4v_msiq_gethead)
 200
 201        /* %o0: devhandle
 202         * %o1: msiqid
 203         * %o2: head
 204         *
 205         * returns %o0: status
 206         */
 207ENTRY(pci_sun4v_msiq_sethead)
 208        mov     HV_FAST_PCI_MSIQ_SETHEAD, %o5
 209        ta      HV_FAST_TRAP
 210        retl
 211         mov    %o0, %o0
 212ENDPROC(pci_sun4v_msiq_sethead)
 213
 214        /* %o0: devhandle
 215         * %o1: msiqid
 216         * %o2: &tail
 217         *
 218         * returns %o0: status
 219         */
 220ENTRY(pci_sun4v_msiq_gettail)
 221        mov     HV_FAST_PCI_MSIQ_GETTAIL, %o5
 222        ta      HV_FAST_TRAP
 223        stx     %o1, [%o2]
 224        retl
 225         mov    %o0, %o0
 226ENDPROC(pci_sun4v_msiq_gettail)
 227
 228        /* %o0: devhandle
 229         * %o1: msinum
 230         * %o2: &valid
 231         *
 232         * returns %o0: status
 233         */
 234ENTRY(pci_sun4v_msi_getvalid)
 235        mov     HV_FAST_PCI_MSI_GETVALID, %o5
 236        ta      HV_FAST_TRAP
 237        stx     %o1, [%o2]
 238        retl
 239         mov    %o0, %o0
 240ENDPROC(pci_sun4v_msi_getvalid)
 241
 242        /* %o0: devhandle
 243         * %o1: msinum
 244         * %o2: valid
 245         *
 246         * returns %o0: status
 247         */
 248ENTRY(pci_sun4v_msi_setvalid)
 249        mov     HV_FAST_PCI_MSI_SETVALID, %o5
 250        ta      HV_FAST_TRAP
 251        retl
 252         mov    %o0, %o0
 253ENDPROC(pci_sun4v_msi_setvalid)
 254
 255        /* %o0: devhandle
 256         * %o1: msinum
 257         * %o2: &msiq
 258         *
 259         * returns %o0: status
 260         */
 261ENTRY(pci_sun4v_msi_getmsiq)
 262        mov     HV_FAST_PCI_MSI_GETMSIQ, %o5
 263        ta      HV_FAST_TRAP
 264        stx     %o1, [%o2]
 265        retl
 266         mov    %o0, %o0
 267ENDPROC(pci_sun4v_msi_getmsiq)
 268
 269        /* %o0: devhandle
 270         * %o1: msinum
 271         * %o2: msitype
 272         * %o3: msiq
 273         *
 274         * returns %o0: status
 275         */
 276ENTRY(pci_sun4v_msi_setmsiq)
 277        mov     HV_FAST_PCI_MSI_SETMSIQ, %o5
 278        ta      HV_FAST_TRAP
 279        retl
 280         mov    %o0, %o0
 281ENDPROC(pci_sun4v_msi_setmsiq)
 282
 283        /* %o0: devhandle
 284         * %o1: msinum
 285         * %o2: &state
 286         *
 287         * returns %o0: status
 288         */
 289ENTRY(pci_sun4v_msi_getstate)
 290        mov     HV_FAST_PCI_MSI_GETSTATE, %o5
 291        ta      HV_FAST_TRAP
 292        stx     %o1, [%o2]
 293        retl
 294         mov    %o0, %o0
 295ENDPROC(pci_sun4v_msi_getstate)
 296
 297        /* %o0: devhandle
 298         * %o1: msinum
 299         * %o2: state
 300         *
 301         * returns %o0: status
 302         */
 303ENTRY(pci_sun4v_msi_setstate)
 304        mov     HV_FAST_PCI_MSI_SETSTATE, %o5
 305        ta      HV_FAST_TRAP
 306        retl
 307         mov    %o0, %o0
 308ENDPROC(pci_sun4v_msi_setstate)
 309
 310        /* %o0: devhandle
 311         * %o1: msinum
 312         * %o2: &msiq
 313         *
 314         * returns %o0: status
 315         */
 316ENTRY(pci_sun4v_msg_getmsiq)
 317        mov     HV_FAST_PCI_MSG_GETMSIQ, %o5
 318        ta      HV_FAST_TRAP
 319        stx     %o1, [%o2]
 320        retl
 321         mov    %o0, %o0
 322ENDPROC(pci_sun4v_msg_getmsiq)
 323
 324        /* %o0: devhandle
 325         * %o1: msinum
 326         * %o2: msiq
 327         *
 328         * returns %o0: status
 329         */
 330ENTRY(pci_sun4v_msg_setmsiq)
 331        mov     HV_FAST_PCI_MSG_SETMSIQ, %o5
 332        ta      HV_FAST_TRAP
 333        retl
 334         mov    %o0, %o0
 335ENDPROC(pci_sun4v_msg_setmsiq)
 336
 337        /* %o0: devhandle
 338         * %o1: msinum
 339         * %o2: &valid
 340         *
 341         * returns %o0: status
 342         */
 343ENTRY(pci_sun4v_msg_getvalid)
 344        mov     HV_FAST_PCI_MSG_GETVALID, %o5
 345        ta      HV_FAST_TRAP
 346        stx     %o1, [%o2]
 347        retl
 348         mov    %o0, %o0
 349ENDPROC(pci_sun4v_msg_getvalid)
 350
 351        /* %o0: devhandle
 352         * %o1: msinum
 353         * %o2: valid
 354         *
 355         * returns %o0: status
 356         */
 357ENTRY(pci_sun4v_msg_setvalid)
 358        mov     HV_FAST_PCI_MSG_SETVALID, %o5
 359        ta      HV_FAST_TRAP
 360        retl
 361         mov    %o0, %o0
 362ENDPROC(pci_sun4v_msg_setvalid)
 363
 364        /*
 365         * %o0: devhandle
 366         * %o1: r_addr
 367         * %o2: size
 368         * %o3: pagesize
 369         * %o4: virt
 370         * %o5: &iotsb_num/&iotsb_handle
 371         *
 372         * returns %o0: status
 373         *         %o1: iotsb_num/iotsb_handle
 374         */
 375ENTRY(pci_sun4v_iotsb_conf)
 376        mov     %o5, %g1
 377        mov     HV_FAST_PCI_IOTSB_CONF, %o5
 378        ta      HV_FAST_TRAP
 379        retl
 380         stx    %o1, [%g1]
 381ENDPROC(pci_sun4v_iotsb_conf)
 382
 383        /*
 384         * %o0: devhandle
 385         * %o1: iotsb_num/iotsb_handle
 386         * %o2: pci_device
 387         *
 388         * returns %o0: status
 389         */
 390ENTRY(pci_sun4v_iotsb_bind)
 391        mov     HV_FAST_PCI_IOTSB_BIND, %o5
 392        ta      HV_FAST_TRAP
 393        retl
 394         nop
 395ENDPROC(pci_sun4v_iotsb_bind)
 396
 397        /*
 398         * %o0: devhandle
 399         * %o1: iotsb_num/iotsb_handle
 400         * %o2: index_count
 401         * %o3: iotte_attributes
 402         * %o4: io_page_list_p
 403         * %o5: &mapped
 404         *
 405         * returns %o0: status
 406         *         %o1: #mapped
 407         */
 408ENTRY(pci_sun4v_iotsb_map)
 409        mov     %o5, %g1
 410        mov     HV_FAST_PCI_IOTSB_MAP, %o5
 411        ta      HV_FAST_TRAP
 412        retl
 413         stx    %o1, [%g1]
 414ENDPROC(pci_sun4v_iotsb_map)
 415
 416        /*
 417         * %o0: devhandle
 418         * %o1: iotsb_num/iotsb_handle
 419         * %o2: iotsb_index
 420         * %o3: #iottes
 421         * %o4: &demapped
 422         *
 423         * returns %o0: status
 424         *         %o1: #demapped
 425         */
 426ENTRY(pci_sun4v_iotsb_demap)
 427        mov     HV_FAST_PCI_IOTSB_DEMAP, %o5
 428        ta      HV_FAST_TRAP
 429        retl
 430         stx    %o1, [%o4]
 431ENDPROC(pci_sun4v_iotsb_demap)
 432