release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/include/asm/iseries/hv_call_event.h

   1 /*
   2  * Copyright (C) 2001  Mike Corrigan IBM Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17  *
  18  * This file contains the "hypervisor call" interface which is used to
  19  * drive the hypervisor from the OS.
  20  */
  21 #ifndef _ASM_POWERPC_ISERIES_HV_CALL_EVENT_H
  22 #define _ASM_POWERPC_ISERIES_HV_CALL_EVENT_H
  23
  24 #include <linux/types.h>
  25 #include <linux/dma-mapping.h>
  26
  27 #include <asm/iseries/hv_call_sc.h>
  28 #include <asm/iseries/hv_types.h>
  29 #include <asm/abs_addr.h>
  30
  31 struct HvLpEvent;
  32
  33 typedef u8 HvLpEvent_Type;
  34 typedef u8 HvLpEvent_AckInd;
  35 typedef u8 HvLpEvent_AckType;
  36
  37 typedef u8 HvLpDma_Direction;
  38 typedef u8 HvLpDma_AddressType;
  39
  40 typedef u64 HvLpEvent_Rc;
  41 typedef u64 HvLpDma_Rc;
  42
  43 #define HvCallEventAckLpEvent                           HvCallEvent +  0
  44 #define HvCallEventCancelLpEvent                        HvCallEvent +  1
  45 #define HvCallEventCloseLpEventPath                     HvCallEvent +  2
  46 #define HvCallEventDmaBufList                           HvCallEvent +  3
  47 #define HvCallEventDmaSingle                            HvCallEvent +  4
  48 #define HvCallEventDmaToSp                              HvCallEvent +  5
  49 #define HvCallEventGetOverflowLpEvents                  HvCallEvent +  6
  50 #define HvCallEventGetSourceLpInstanceId                HvCallEvent +  7
  51 #define HvCallEventGetTargetLpInstanceId                HvCallEvent +  8
  52 #define HvCallEventOpenLpEventPath                      HvCallEvent +  9
  53 #define HvCallEventSetLpEventStack                      HvCallEvent + 10
  54 #define HvCallEventSignalLpEvent                        HvCallEvent + 11
  55 #define HvCallEventSignalLpEventParms                   HvCallEvent + 12
  56 #define HvCallEventSetInterLpQueueIndex                 HvCallEvent + 13
  57 #define HvCallEventSetLpEventQueueInterruptProc         HvCallEvent + 14
  58 #define HvCallEventRouter15                             HvCallEvent + 15
  59
  60 static inline void HvCallEvent_getOverflowLpEvents(u8 queueIndex)
  61 {
  62         HvCall1(HvCallEventGetOverflowLpEvents, queueIndex);
  63 }
  64
  65 static inline void HvCallEvent_setInterLpQueueIndex(u8 queueIndex)
  66 {
  67         HvCall1(HvCallEventSetInterLpQueueIndex, queueIndex);
  68 }
  69
  70 static inline void HvCallEvent_setLpEventStack(u8 queueIndex,
  71                 char *eventStackAddr, u32 eventStackSize)
  72 {
  73         HvCall3(HvCallEventSetLpEventStack, queueIndex,
  74                         virt_to_abs(eventStackAddr), eventStackSize);
  75 }
  76
  77 static inline void HvCallEvent_setLpEventQueueInterruptProc(u8 queueIndex,
  78                 u16 lpLogicalProcIndex)
  79 {
  80         HvCall2(HvCallEventSetLpEventQueueInterruptProc, queueIndex,
  81                         lpLogicalProcIndex);
  82 }
  83
  84 static inline HvLpEvent_Rc HvCallEvent_signalLpEvent(struct HvLpEvent *event)
  85 {
  86         return HvCall1(HvCallEventSignalLpEvent, virt_to_abs(event));
  87 }
  88
  89 static inline HvLpEvent_Rc HvCallEvent_signalLpEventFast(HvLpIndex targetLp,
  90                 HvLpEvent_Type type, u16 subtype, HvLpEvent_AckInd ackInd,
  91                 HvLpEvent_AckType ackType, HvLpInstanceId sourceInstanceId,
  92                 HvLpInstanceId targetInstanceId, u64 correlationToken,
  93                 u64 eventData1, u64 eventData2, u64 eventData3,
  94                 u64 eventData4, u64 eventData5)
  95 {
  96         /* Pack the misc bits into a single Dword to pass to PLIC */
  97         union {
  98                 struct {
  99                         u8              ack_and_target;
 100                         u8              type;
 101                         u16             subtype;
 102                         HvLpInstanceId  src_inst;
 103                         HvLpInstanceId  target_inst;
 104                 } parms;
 105                 u64             dword;
 106         } packed;
 107
 108         packed.parms.ack_and_target = (ackType << 7) | (ackInd << 6) | targetLp;
 109         packed.parms.type = type;
 110         packed.parms.subtype = subtype;
 111         packed.parms.src_inst = sourceInstanceId;
 112         packed.parms.target_inst = targetInstanceId;
 113
 114         return HvCall7(HvCallEventSignalLpEventParms, packed.dword,
 115                         correlationToken, eventData1, eventData2,
 116                         eventData3, eventData4, eventData5);
 117 }
 118
 119 extern void *iseries_hv_alloc(size_t size, dma_addr_t *dma_handle, gfp_t flag);
 120 extern void iseries_hv_free(size_t size, void *vaddr, dma_addr_t dma_handle);
 121 extern dma_addr_t iseries_hv_map(void *vaddr, size_t size,
 122                         enum dma_data_direction direction);
 123 extern void iseries_hv_unmap(dma_addr_t dma_handle, size_t size,
 124                         enum dma_data_direction direction);
 125
 126 static inline HvLpEvent_Rc HvCallEvent_ackLpEvent(struct HvLpEvent *event)
 127 {
 128         return HvCall1(HvCallEventAckLpEvent, virt_to_abs(event));
 129 }
 130
 131 static inline HvLpEvent_Rc HvCallEvent_cancelLpEvent(struct HvLpEvent *event)
 132 {
 133         return HvCall1(HvCallEventCancelLpEvent, virt_to_abs(event));
 134 }
 135
 136 static inline HvLpInstanceId HvCallEvent_getSourceLpInstanceId(
 137                 HvLpIndex targetLp, HvLpEvent_Type type)
 138 {
 139         return HvCall2(HvCallEventGetSourceLpInstanceId, targetLp, type);
 140 }
 141
 142 static inline HvLpInstanceId HvCallEvent_getTargetLpInstanceId(
 143                 HvLpIndex targetLp, HvLpEvent_Type type)
 144 {
 145         return HvCall2(HvCallEventGetTargetLpInstanceId, targetLp, type);
 146 }
 147
 148 static inline void HvCallEvent_openLpEventPath(HvLpIndex targetLp,
 149                 HvLpEvent_Type type)
 150 {
 151         HvCall2(HvCallEventOpenLpEventPath, targetLp, type);
 152 }
 153
 154 static inline void HvCallEvent_closeLpEventPath(HvLpIndex targetLp,
 155                 HvLpEvent_Type type)
 156 {
 157         HvCall2(HvCallEventCloseLpEventPath, targetLp, type);
 158 }
 159
 160 static inline HvLpDma_Rc HvCallEvent_dmaBufList(HvLpEvent_Type type,
 161                 HvLpIndex remoteLp, HvLpDma_Direction direction,
 162                 HvLpInstanceId localInstanceId,
 163                 HvLpInstanceId remoteInstanceId,
 164                 HvLpDma_AddressType localAddressType,
 165                 HvLpDma_AddressType remoteAddressType,
 166                 /* Do these need to be converted to absolute addresses? */
 167                 u64 localBufList, u64 remoteBufList, u32 transferLength)
 168 {
 169         /* Pack the misc bits into a single Dword to pass to PLIC */
 170         union {
 171                 struct {
 172                         u8              flags;
 173                         HvLpIndex       remote;
 174                         u8              type;
 175                         u8              reserved;
 176                         HvLpInstanceId  local_inst;
 177                         HvLpInstanceId  remote_inst;
 178                 } parms;
 179                 u64             dword;
 180         } packed;
 181
 182         packed.parms.flags = (direction << 7) |
 183                 (localAddressType << 6) | (remoteAddressType << 5);
 184         packed.parms.remote = remoteLp;
 185         packed.parms.type = type;
 186         packed.parms.reserved = 0;
 187         packed.parms.local_inst = localInstanceId;
 188         packed.parms.remote_inst = remoteInstanceId;
 189
 190         return HvCall4(HvCallEventDmaBufList, packed.dword, localBufList,
 191                         remoteBufList, transferLength);
 192 }
 193
 194 static inline HvLpDma_Rc HvCallEvent_dmaToSp(void *local, u32 remote,
 195                 u32 length, HvLpDma_Direction dir)
 196 {
 197         return HvCall4(HvCallEventDmaToSp, virt_to_abs(local), remote,
 198                         length, dir);
 199 }
 200
 201 #endif /* _ASM_POWERPC_ISERIES_HV_CALL_EVENT_H */