LXR linux/arch/sparc/kernel/pci_sun4v

   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         */
  18ENTRY(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
  251:      retl
  26         nop
  27ENDPROC(pci_sun4v_iommu_map)
  28
  29        /* %o0: devhandle
  30         * %o1: tsbid
  31         * %o2: num ttes
  32         *
  33         * returns %o0: num ttes demapped
  34         */
  35ENTRY(pci_sun4v_iommu_demap)
  36        mov     HV_FAST_PCI_IOMMU_DEMAP, %o5
  37        ta      HV_FAST_TRAP
  38        retl
  39         mov    %o1, %o0
  40ENDPROC(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         */
  49ENTRY(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
  57ENDPROC(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         */
  69ENTRY(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
  741:      retl
  75         mov    %o2, %o0
  76ENDPROC(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         */
  89ENTRY(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
  941:      retl
  95         mov    %o1, %o0
  96ENDPROC(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         */
 108ENTRY(pci_sun4v_msiq_conf)
 109        mov     HV_FAST_PCI_MSIQ_CONF, %o5
 110        ta      HV_FAST_TRAP
 111        retl
 112         mov    %o0, %o0
 113ENDPROC(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         */
 122ENTRY(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
 130ENDPROC(pci_sun4v_msiq_info)
 131
 132        /* %o0: devhandle
 133         * %o1: msiqid
 134         * %o2: &valid
 135         *
 136         * returns %o0: status
 137         */
 138ENTRY(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
 144ENDPROC(pci_sun4v_msiq_getvalid)
 145
 146        /* %o0: devhandle
 147         * %o1: msiqid
 148         * %o2: valid
 149         *
 150         * returns %o0: status
 151         */
 152ENTRY(pci_sun4v_msiq_setvalid)
 153        mov     HV_FAST_PCI_MSIQ_SETVALID, %o5
 154        ta      HV_FAST_TRAP
 155        retl
 156         mov    %o0, %o0
 157ENDPROC(pci_sun4v_msiq_setvalid)
 158
 159        /* %o0: devhandle
 160         * %o1: msiqid
 161         * %o2: &state
 162         *
 163         * returns %o0: status
 164         */
 165ENTRY(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
 171ENDPROC(pci_sun4v_msiq_getstate)
 172
 173        /* %o0: devhandle
 174         * %o1: msiqid
 175         * %o2: state
 176         *
 177         * returns %o0: status
 178         */
 179ENTRY(pci_sun4v_msiq_setstate)
 180        mov     HV_FAST_PCI_MSIQ_SETSTATE, %o5
 181        ta      HV_FAST_TRAP
 182        retl
 183         mov    %o0, %o0
 184ENDPROC(pci_sun4v_msiq_setstate)
 185
 186        /* %o0: devhandle
 187         * %o1: msiqid
 188         * %o2: &head
 189         *
 190         * returns %o0: status
 191         */
 192ENTRY(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
 198ENDPROC(pci_sun4v_msiq_gethead)
 199
 200        /* %o0: devhandle
 201         * %o1: msiqid
 202         * %o2: head
 203         *
 204         * returns %o0: status
 205         */
 206ENTRY(pci_sun4v_msiq_sethead)
 207        mov     HV_FAST_PCI_MSIQ_SETHEAD, %o5
 208        ta      HV_FAST_TRAP
 209        retl
 210         mov    %o0, %o0
 211ENDPROC(pci_sun4v_msiq_sethead)
 212
 213        /* %o0: devhandle
 214         * %o1: msiqid
 215         * %o2: &tail
 216         *
 217         * returns %o0: status
 218         */
 219ENTRY(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
 225ENDPROC(pci_sun4v_msiq_gettail)
 226
 227        /* %o0: devhandle
 228         * %o1: msinum
 229         * %o2: &valid
 230         *
 231         * returns %o0: status
 232         */
 233ENTRY(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
 239ENDPROC(pci_sun4v_msi_getvalid)
 240
 241        /* %o0: devhandle
 242         * %o1: msinum
 243         * %o2: valid
 244         *
 245         * returns %o0: status
 246         */
 247ENTRY(pci_sun4v_msi_setvalid)
 248        mov     HV_FAST_PCI_MSI_SETVALID, %o5
 249        ta      HV_FAST_TRAP
 250        retl
 251         mov    %o0, %o0
 252ENDPROC(pci_sun4v_msi_setvalid)
 253
 254        /* %o0: devhandle
 255         * %o1: msinum
 256         * %o2: &msiq
 257         *
 258         * returns %o0: status
 259         */
 260ENTRY(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
 266ENDPROC(pci_sun4v_msi_getmsiq)
 267
 268        /* %o0: devhandle
 269         * %o1: msinum
 270         * %o2: msitype
 271         * %o3: msiq
 272         *
 273         * returns %o0: status
 274         */
 275ENTRY(pci_sun4v_msi_setmsiq)
 276        mov     HV_FAST_PCI_MSI_SETMSIQ, %o5
 277        ta      HV_FAST_TRAP
 278        retl
 279         mov    %o0, %o0
 280ENDPROC(pci_sun4v_msi_setmsiq)
 281
 282        /* %o0: devhandle
 283         * %o1: msinum
 284         * %o2: &state
 285         *
 286         * returns %o0: status
 287         */
 288ENTRY(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
 294ENDPROC(pci_sun4v_msi_getstate)
 295
 296        /* %o0: devhandle
 297         * %o1: msinum
 298         * %o2: state
 299         *
 300         * returns %o0: status
 301         */
 302ENTRY(pci_sun4v_msi_setstate)
 303        mov     HV_FAST_PCI_MSI_SETSTATE, %o5
 304        ta      HV_FAST_TRAP
 305        retl
 306         mov    %o0, %o0
 307ENDPROC(pci_sun4v_msi_setstate)
 308
 309        /* %o0: devhandle
 310         * %o1: msinum
 311         * %o2: &msiq
 312         *
 313         * returns %o0: status
 314         */
 315ENTRY(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
 321ENDPROC(pci_sun4v_msg_getmsiq)
 322
 323        /* %o0: devhandle
 324         * %o1: msinum
 325         * %o2: msiq
 326         *
 327         * returns %o0: status
 328         */
 329ENTRY(pci_sun4v_msg_setmsiq)
 330        mov     HV_FAST_PCI_MSG_SETMSIQ, %o5
 331        ta      HV_FAST_TRAP
 332        retl
 333         mov    %o0, %o0
 334ENDPROC(pci_sun4v_msg_setmsiq)
 335
 336        /* %o0: devhandle
 337         * %o1: msinum
 338         * %o2: &valid
 339         *
 340         * returns %o0: status
 341         */
 342ENTRY(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
 348ENDPROC(pci_sun4v_msg_getvalid)
 349
 350        /* %o0: devhandle
 351         * %o1: msinum
 352         * %o2: valid
 353         *
 354         * returns %o0: status
 355         */
 356ENTRY(pci_sun4v_msg_setvalid)
 357        mov     HV_FAST_PCI_MSG_SETVALID, %o5
 358        ta      HV_FAST_TRAP
 359        retl
 360         mov    %o0, %o0
 361ENDPROC(pci_sun4v_msg_setvalid)
 362
 363