arch/sparc64/kernel/pci_sun4v_asm.S

   1 /* pci_sun4v_asm: Hypervisor calls for PCI support.
   2  *
   3  * Copyright (C) 2006 David S. Miller <davem@davemloft.net>
   4  */
   5
   6 #include <asm/hypervisor.h>
   7
   8         /* %o0: devhandle
   9          * %o1: tsbid
  10          * %o2: num ttes
  11          * %o3: io_attributes
  12          * %o4: io_page_list phys address
  13          *
  14          * returns %o0: -status if status was non-zero, else
  15          *         %o0: num pages mapped
  16          */
  17         .globl  pci_sun4v_iommu_map
  18 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
  28         /* %o0: devhandle
  29          * %o1: tsbid
  30          * %o2: num ttes
  31          *
  32          * returns %o0: num ttes demapped
  33          */
  34         .globl  pci_sun4v_iommu_demap
  35 pci_sun4v_iommu_demap:
  36         mov     HV_FAST_PCI_IOMMU_DEMAP, %o5
  37         ta      HV_FAST_TRAP
  38         retl
  39          mov    %o1, %o0
  40
  41         /* %o0: devhandle
  42          * %o1: tsbid
  43          * %o2: &io_attributes
  44          * %o3: &real_address
  45          *
  46          * returns %o0: status
  47          */
  48         .globl  pci_sun4v_iommu_getmap
  49 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
  58         /* %o0: devhandle
  59          * %o1: pci_device
  60          * %o2: pci_config_offset
  61          * %o3: size
  62          *
  63          * returns %o0: data
  64          *
  65          * If there is an error, the data will be returned
  66          * as all 1's.
  67          */
  68         .globl  pci_sun4v_config_get
  69 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
  77         /* %o0: devhandle
  78          * %o1: pci_device
  79          * %o2: pci_config_offset
  80          * %o3: size
  81          * %o4: data
  82          *
  83          * returns %o0: status
  84          *
  85          * status will be zero if the operation completed
  86          * successfully, else -1 if not
  87          */
  88         .globl  pci_sun4v_config_put
  89 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
  97         /* %o0: devhandle
  98          * %o1: msiqid
  99          * %o2: msiq phys address
 100          * %o3: num entries
 101          *
 102          * returns %o0: status
 103          *
 104          * status will be zero if the operation completed
 105          * successfully, else -1 if not
 106          */
 107         .globl  pci_sun4v_msiq_conf
 108 pci_sun4v_msiq_conf:
 109         mov     HV_FAST_PCI_MSIQ_CONF, %o5
 110         ta      HV_FAST_TRAP
 111         retl
 112          mov    %o0, %o0
 113
 114         /* %o0: devhandle
 115          * %o1: msiqid
 116          * %o2: &msiq_phys_addr
 117          * %o3: &msiq_num_entries
 118          *
 119          * returns %o0: status
 120          */
 121         .globl  pci_sun4v_msiq_info
 122 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
 131         /* %o0: devhandle
 132          * %o1: msiqid
 133          * %o2: &valid
 134          *
 135          * returns %o0: status
 136          */
 137         .globl  pci_sun4v_msiq_getvalid
 138 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
 145         /* %o0: devhandle
 146          * %o1: msiqid
 147          * %o2: valid
 148          *
 149          * returns %o0: status
 150          */
 151         .globl  pci_sun4v_msiq_setvalid
 152 pci_sun4v_msiq_setvalid:
 153         mov     HV_FAST_PCI_MSIQ_SETVALID, %o5
 154         ta      HV_FAST_TRAP
 155         retl
 156          mov    %o0, %o0
 157
 158         /* %o0: devhandle
 159          * %o1: msiqid
 160          * %o2: &state
 161          *
 162          * returns %o0: status
 163          */
 164         .globl  pci_sun4v_msiq_getstate
 165 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
 172         /* %o0: devhandle
 173          * %o1: msiqid
 174          * %o2: state
 175          *
 176          * returns %o0: status
 177          */
 178         .globl  pci_sun4v_msiq_setstate
 179 pci_sun4v_msiq_setstate:
 180         mov     HV_FAST_PCI_MSIQ_SETSTATE, %o5
 181         ta      HV_FAST_TRAP
 182         retl
 183          mov    %o0, %o0
 184
 185         /* %o0: devhandle
 186          * %o1: msiqid
 187          * %o2: &head
 188          *
 189          * returns %o0: status
 190          */
 191         .globl  pci_sun4v_msiq_gethead
 192 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
 199         /* %o0: devhandle
 200          * %o1: msiqid
 201          * %o2: head
 202          *
 203          * returns %o0: status
 204          */
 205         .globl  pci_sun4v_msiq_sethead
 206 pci_sun4v_msiq_sethead:
 207         mov     HV_FAST_PCI_MSIQ_SETHEAD, %o5
 208         ta      HV_FAST_TRAP
 209         retl
 210          mov    %o0, %o0
 211
 212         /* %o0: devhandle
 213          * %o1: msiqid
 214          * %o2: &tail
 215          *
 216          * returns %o0: status
 217          */
 218         .globl  pci_sun4v_msiq_gettail
 219 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
 226         /* %o0: devhandle
 227          * %o1: msinum
 228          * %o2: &valid
 229          *
 230          * returns %o0: status
 231          */
 232         .globl  pci_sun4v_msi_getvalid
 233 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
 240         /* %o0: devhandle
 241          * %o1: msinum
 242          * %o2: valid
 243          *
 244          * returns %o0: status
 245          */
 246         .globl  pci_sun4v_msi_setvalid
 247 pci_sun4v_msi_setvalid:
 248         mov     HV_FAST_PCI_MSI_SETVALID, %o5
 249         ta      HV_FAST_TRAP
 250         retl
 251          mov    %o0, %o0
 252
 253         /* %o0: devhandle
 254          * %o1: msinum
 255          * %o2: &msiq
 256          *
 257          * returns %o0: status
 258          */
 259         .globl  pci_sun4v_msi_getmsiq
 260 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
 267         /* %o0: devhandle
 268          * %o1: msinum
 269          * %o2: msitype
 270          * %o3: msiq
 271          *
 272          * returns %o0: status
 273          */
 274         .globl  pci_sun4v_msi_setmsiq
 275 pci_sun4v_msi_setmsiq:
 276         mov     HV_FAST_PCI_MSI_SETMSIQ, %o5
 277         ta      HV_FAST_TRAP
 278         retl
 279          mov    %o0, %o0
 280
 281         /* %o0: devhandle
 282          * %o1: msinum
 283          * %o2: &state
 284          *
 285          * returns %o0: status
 286          */
 287         .globl  pci_sun4v_msi_getstate
 288 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
 295         /* %o0: devhandle
 296          * %o1: msinum
 297          * %o2: state
 298          *
 299          * returns %o0: status
 300          */
 301         .globl  pci_sun4v_msi_setstate
 302 pci_sun4v_msi_setstate:
 303         mov     HV_FAST_PCI_MSI_SETSTATE, %o5
 304         ta      HV_FAST_TRAP
 305         retl
 306          mov    %o0, %o0
 307
 308         /* %o0: devhandle
 309          * %o1: msinum
 310          * %o2: &msiq
 311          *
 312          * returns %o0: status
 313          */
 314         .globl  pci_sun4v_msg_getmsiq
 315 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
 322         /* %o0: devhandle
 323          * %o1: msinum
 324          * %o2: msiq
 325          *
 326          * returns %o0: status
 327          */
 328         .globl  pci_sun4v_msg_setmsiq
 329 pci_sun4v_msg_setmsiq:
 330         mov     HV_FAST_PCI_MSG_SETMSIQ, %o5
 331         ta      HV_FAST_TRAP
 332         retl
 333          mov    %o0, %o0
 334
 335         /* %o0: devhandle
 336          * %o1: msinum
 337          * %o2: &valid
 338          *
 339          * returns %o0: status
 340          */
 341         .globl  pci_sun4v_msg_getvalid
 342 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
 349         /* %o0: devhandle
 350          * %o1: msinum
 351          * %o2: valid
 352          *
 353          * returns %o0: status
 354          */
 355         .globl  pci_sun4v_msg_setvalid
 356 pci_sun4v_msg_setvalid:
 357         mov     HV_FAST_PCI_MSG_SETVALID, %o5
 358         ta      HV_FAST_TRAP
 359         retl
 360          mov    %o0, %o0
 361