arch/sparc/kernel/pci_sun4v

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   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          */
  19 ENTRY(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
  26 1:      retl
  27          nop
  28 ENDPROC(pci_sun4v_iommu_map)
  29 
  30         /* %o0: devhandle
  31          * %o1: tsbid
  32          * %o2: num ttes
  33          *
  34          * returns %o0: num ttes demapped
  35          */
  36 ENTRY(pci_sun4v_iommu_demap)
  37         mov     HV_FAST_PCI_IOMMU_DEMAP, %o5
  38         ta      HV_FAST_TRAP
  39         retl
  40          mov    %o1, %o0
  41 ENDPROC(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          */
  50 ENTRY(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
  58 ENDPROC(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          */
  70 ENTRY(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
  75 1:      retl
  76          mov    %o2, %o0
  77 ENDPROC(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          */
  90 ENTRY(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
  95 1:      retl
  96          mov    %o1, %o0
  97 ENDPROC(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          */
 109 ENTRY(pci_sun4v_msiq_conf)
 110         mov     HV_FAST_PCI_MSIQ_CONF, %o5
 111         ta      HV_FAST_TRAP
 112         retl
 113          mov    %o0, %o0
 114 ENDPROC(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          */
 123 ENTRY(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
 131 ENDPROC(pci_sun4v_msiq_info)
 132 
 133         /* %o0: devhandle
 134          * %o1: msiqid
 135          * %o2: &valid
 136          *
 137          * returns %o0: status
 138          */
 139 ENTRY(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
 145 ENDPROC(pci_sun4v_msiq_getvalid)
 146 
 147         /* %o0: devhandle
 148          * %o1: msiqid
 149          * %o2: valid
 150          *
 151          * returns %o0: status
 152          */
 153 ENTRY(pci_sun4v_msiq_setvalid)
 154         mov     HV_FAST_PCI_MSIQ_SETVALID, %o5
 155         ta      HV_FAST_TRAP
 156         retl
 157          mov    %o0, %o0
 158 ENDPROC(pci_sun4v_msiq_setvalid)
 159 
 160         /* %o0: devhandle
 161          * %o1: msiqid
 162          * %o2: &state
 163          *
 164          * returns %o0: status
 165          */
 166 ENTRY(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
 172 ENDPROC(pci_sun4v_msiq_getstate)
 173 
 174         /* %o0: devhandle
 175          * %o1: msiqid
 176          * %o2: state
 177          *
 178          * returns %o0: status
 179          */
 180 ENTRY(pci_sun4v_msiq_setstate)
 181         mov     HV_FAST_PCI_MSIQ_SETSTATE, %o5
 182         ta      HV_FAST_TRAP
 183         retl
 184          mov    %o0, %o0
 185 ENDPROC(pci_sun4v_msiq_setstate)
 186 
 187         /* %o0: devhandle
 188          * %o1: msiqid
 189          * %o2: &head
 190          *
 191          * returns %o0: status
 192          */
 193 ENTRY(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
 199 ENDPROC(pci_sun4v_msiq_gethead)
 200 
 201         /* %o0: devhandle
 202          * %o1: msiqid
 203          * %o2: head
 204          *
 205          * returns %o0: status
 206          */
 207 ENTRY(pci_sun4v_msiq_sethead)
 208         mov     HV_FAST_PCI_MSIQ_SETHEAD, %o5
 209         ta      HV_FAST_TRAP
 210         retl
 211          mov    %o0, %o0
 212 ENDPROC(pci_sun4v_msiq_sethead)
 213 
 214         /* %o0: devhandle
 215          * %o1: msiqid
 216          * %o2: &tail
 217          *
 218          * returns %o0: status
 219          */
 220 ENTRY(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
 226 ENDPROC(pci_sun4v_msiq_gettail)
 227 
 228         /* %o0: devhandle
 229          * %o1: msinum
 230          * %o2: &valid
 231          *
 232          * returns %o0: status
 233          */
 234 ENTRY(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
 240 ENDPROC(pci_sun4v_msi_getvalid)
 241 
 242         /* %o0: devhandle
 243          * %o1: msinum
 244          * %o2: valid
 245          *
 246          * returns %o0: status
 247          */
 248 ENTRY(pci_sun4v_msi_setvalid)
 249         mov     HV_FAST_PCI_MSI_SETVALID, %o5
 250         ta      HV_FAST_TRAP
 251         retl
 252          mov    %o0, %o0
 253 ENDPROC(pci_sun4v_msi_setvalid)
 254 
 255         /* %o0: devhandle
 256          * %o1: msinum
 257          * %o2: &msiq
 258          *
 259          * returns %o0: status
 260          */
 261 ENTRY(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
 267 ENDPROC(pci_sun4v_msi_getmsiq)
 268 
 269         /* %o0: devhandle
 270          * %o1: msinum
 271          * %o2: msitype
 272          * %o3: msiq
 273          *
 274          * returns %o0: status
 275          */
 276 ENTRY(pci_sun4v_msi_setmsiq)
 277         mov     HV_FAST_PCI_MSI_SETMSIQ, %o5
 278         ta      HV_FAST_TRAP
 279         retl
 280          mov    %o0, %o0
 281 ENDPROC(pci_sun4v_msi_setmsiq)
 282 
 283         /* %o0: devhandle
 284          * %o1: msinum
 285          * %o2: &state
 286          *
 287          * returns %o0: status
 288          */
 289 ENTRY(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
 295 ENDPROC(pci_sun4v_msi_getstate)
 296 
 297         /* %o0: devhandle
 298          * %o1: msinum
 299          * %o2: state
 300          *
 301          * returns %o0: status
 302          */
 303 ENTRY(pci_sun4v_msi_setstate)
 304         mov     HV_FAST_PCI_MSI_SETSTATE, %o5
 305         ta      HV_FAST_TRAP
 306         retl
 307          mov    %o0, %o0
 308 ENDPROC(pci_sun4v_msi_setstate)
 309 
 310         /* %o0: devhandle
 311          * %o1: msinum
 312          * %o2: &msiq
 313          *
 314          * returns %o0: status
 315          */
 316 ENTRY(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
 322 ENDPROC(pci_sun4v_msg_getmsiq)
 323 
 324         /* %o0: devhandle
 325          * %o1: msinum
 326          * %o2: msiq
 327          *
 328          * returns %o0: status
 329          */
 330 ENTRY(pci_sun4v_msg_setmsiq)
 331         mov     HV_FAST_PCI_MSG_SETMSIQ, %o5
 332         ta      HV_FAST_TRAP
 333         retl
 334          mov    %o0, %o0
 335 ENDPROC(pci_sun4v_msg_setmsiq)
 336 
 337         /* %o0: devhandle
 338          * %o1: msinum
 339          * %o2: &valid
 340          *
 341          * returns %o0: status
 342          */
 343 ENTRY(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
 349 ENDPROC(pci_sun4v_msg_getvalid)
 350 
 351         /* %o0: devhandle
 352          * %o1: msinum
 353          * %o2: valid
 354          *
 355          * returns %o0: status
 356          */
 357 ENTRY(pci_sun4v_msg_setvalid)
 358         mov     HV_FAST_PCI_MSG_SETVALID, %o5
 359         ta      HV_FAST_TRAP
 360         retl
 361          mov    %o0, %o0
 362 ENDPROC(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          */
 375 ENTRY(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]
 381 ENDPROC(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          */
 390 ENTRY(pci_sun4v_iotsb_bind)
 391         mov     HV_FAST_PCI_IOTSB_BIND, %o5
 392         ta      HV_FAST_TRAP
 393         retl
 394          nop
 395 ENDPROC(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          */
 408 ENTRY(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]
 414 ENDPROC(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          */
 426 ENTRY(pci_sun4v_iotsb_demap)
 427         mov     HV_FAST_PCI_IOTSB_DEMAP, %o5
 428         ta      HV_FAST_TRAP
 429         retl
 430          stx    %o1, [%o4]
 431 ENDPROC(pci_sun4v_iotsb_demap)
/* [<][>][^][v][top][bottom][index][help] */
root/arch/sparc/kernel/pci_sun4v_asm.S
