arch/sparc/kernel/pci_sun4v_asm.S

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