arch/ppc64/kernel/LparData.c

   1 /*
   2  * Copyright 2001 Mike Corrigan, IBM Corp
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version
   7  * 2 of the License, or (at your option) any later version.
   8  */
   9 #include <linux/config.h>
  10 #include <linux/types.h>
  11 #include <linux/threads.h>
  12 #include <linux/module.h>
  13 #include <linux/bitops.h>
  14 #include <asm/processor.h>
  15 #include <asm/ptrace.h>
  16 #include <asm/naca.h>
  17 #include <asm/abs_addr.h>
  18 #include <asm/iSeries/ItLpNaca.h>
  19 #include <asm/lppaca.h>
  20 #include <asm/iSeries/ItLpRegSave.h>
  21 #include <asm/paca.h>
  22 #include <asm/iSeries/HvReleaseData.h>
  23 #include <asm/iSeries/LparMap.h>
  24 #include <asm/iSeries/ItVpdAreas.h>
  25 #include <asm/iSeries/ItIplParmsReal.h>
  26 #include <asm/iSeries/ItExtVpdPanel.h>
  27 #include <asm/iSeries/ItLpQueue.h>
  28 #include <asm/iSeries/IoHriProcessorVpd.h>
  29 #include <asm/iSeries/ItSpCommArea.h>
  30
  31 /* The LpQueue is used to pass event data from the hypervisor to
  32  * the partition.  This is where I/O interrupt events are communicated.
  33  */
  34
  35 /* May be filled in by the hypervisor so cannot end up in the BSS */
  36 struct ItLpQueue xItLpQueue __attribute__((__section__(".data")));
  37
  38
  39 /* The HvReleaseData is the root of the information shared between
  40  * the hypervisor and Linux.
  41  */
  42
  43 struct HvReleaseData hvReleaseData = {
  44         .xDesc = 0xc8a5d9c4,    /* "HvRD" ebcdic */
  45         .xSize = sizeof(struct HvReleaseData),
  46         .xVpdAreasPtrOffset = offsetof(struct naca_struct, xItVpdAreas),
  47         .xSlicNacaAddr = &naca,         /* 64-bit Naca address */
  48         .xMsNucDataOffset = 0x4800,     /* offset of LparMap within loadarea (see head.S) */
  49         .xTagsMode = 1,                 /* tags inactive       */
  50         .xAddressSize = 0,              /* 64 bit              */
  51         .xNoSharedProcs = 0,            /* shared processors   */
  52         .xNoHMT = 0,                    /* HMT allowed         */
  53         .xRsvd2 = 6,                    /* TEMP: This allows non-GA driver */
  54         .xVrmIndex = 4,                 /* We are v5r2m0               */
  55         .xMinSupportedPlicVrmIndex = 3,         /* v5r1m0 */
  56         .xMinCompatablePlicVrmIndex = 3,        /* v5r1m0 */
  57         .xVrmName = { 0xd3, 0x89, 0x95, 0xa4,   /* "Linux 2.4.64" ebcdic */
  58                 0xa7, 0x40, 0xf2, 0x4b,
  59                 0xf4, 0x4b, 0xf6, 0xf4 },
  60 };
  61
  62 extern void system_reset_iSeries(void);
  63 extern void machine_check_iSeries(void);
  64 extern void data_access_iSeries(void);
  65 extern void instruction_access_iSeries(void);
  66 extern void hardware_interrupt_iSeries(void);
  67 extern void alignment_iSeries(void);
  68 extern void program_check_iSeries(void);
  69 extern void fp_unavailable_iSeries(void);
  70 extern void decrementer_iSeries(void);
  71 extern void trap_0a_iSeries(void);
  72 extern void trap_0b_iSeries(void);
  73 extern void system_call_iSeries(void);
  74 extern void single_step_iSeries(void);
  75 extern void trap_0e_iSeries(void);
  76 extern void performance_monitor_iSeries(void);
  77 extern void data_access_slb_iSeries(void);
  78 extern void instruction_access_slb_iSeries(void);
  79
  80 struct ItLpNaca itLpNaca = {
  81         .xDesc = 0xd397d581,            /* "LpNa" ebcdic */
  82         .xSize = 0x0400,                /* size of ItLpNaca */
  83         .xIntHdlrOffset = 0x0300,       /* offset to int array */
  84         .xMaxIntHdlrEntries = 19,       /* # ents */
  85         .xPrimaryLpIndex = 0,           /* Part # of primary */
  86         .xServiceLpIndex = 0,           /* Part # of serv */
  87         .xLpIndex = 0,                  /* Part # of me */
  88         .xMaxLpQueues = 0,              /* # of LP queues */
  89         .xLpQueueOffset = 0x100,        /* offset of start of LP queues */
  90         .xPirEnvironMode = 0,           /* Piranha stuff */
  91         .xPirConsoleMode = 0,
  92         .xPirDasdMode = 0,
  93         .xLparInstalled = 0,
  94         .xSysPartitioned = 0,
  95         .xHwSyncedTBs = 0,
  96         .xIntProcUtilHmt = 0,
  97         .xSpVpdFormat = 0,
  98         .xIntProcRatio = 0,
  99         .xPlicVrmIndex = 0,             /* VRM index of PLIC */
 100         .xMinSupportedSlicVrmInd = 0,   /* min supported SLIC */
 101         .xMinCompatableSlicVrmInd = 0,  /* min compat SLIC */
 102         .xLoadAreaAddr = 0,             /* 64-bit addr of load area */
 103         .xLoadAreaChunks = 0,           /* chunks for load area */
 104         .xPaseSysCallCRMask = 0,        /* PASE mask */
 105         .xSlicSegmentTablePtr = 0,      /* seg table */
 106         .xOldLpQueue = { 0 },           /* Old LP Queue */
 107         .xInterruptHdlr = {
 108                 (u64)system_reset_iSeries,      /* 0x100 System Reset */
 109                 (u64)machine_check_iSeries,     /* 0x200 Machine Check */
 110                 (u64)data_access_iSeries,       /* 0x300 Data Access */
 111                 (u64)instruction_access_iSeries, /* 0x400 Instruction Access */
 112                 (u64)hardware_interrupt_iSeries, /* 0x500 External */
 113                 (u64)alignment_iSeries,         /* 0x600 Alignment */
 114                 (u64)program_check_iSeries,     /* 0x700 Program Check */
 115                 (u64)fp_unavailable_iSeries,    /* 0x800 FP Unavailable */
 116                 (u64)decrementer_iSeries,       /* 0x900 Decrementer */
 117                 (u64)trap_0a_iSeries,           /* 0xa00 Trap 0A */
 118                 (u64)trap_0b_iSeries,           /* 0xb00 Trap 0B */
 119                 (u64)system_call_iSeries,       /* 0xc00 System Call */
 120                 (u64)single_step_iSeries,       /* 0xd00 Single Step */
 121                 (u64)trap_0e_iSeries,           /* 0xe00 Trap 0E */
 122                 (u64)performance_monitor_iSeries,/* 0xf00 Performance Monitor */
 123                 0,                              /* int 0x1000 */
 124                 0,                              /* int 0x1010 */
 125                 0,                              /* int 0x1020 CPU ctls */
 126                 (u64)hardware_interrupt_iSeries, /* SC Ret Hdlr */
 127                 (u64)data_access_slb_iSeries,   /* 0x380 D-SLB */
 128                 (u64)instruction_access_slb_iSeries /* 0x480 I-SLB */
 129         }
 130 };
 131 EXPORT_SYMBOL(itLpNaca);
 132
 133 /* May be filled in by the hypervisor so cannot end up in the BSS */
 134 struct ItIplParmsReal xItIplParmsReal __attribute__((__section__(".data")));
 135
 136 /* May be filled in by the hypervisor so cannot end up in the BSS */
 137 struct ItExtVpdPanel xItExtVpdPanel __attribute__((__section__(".data")));
 138 EXPORT_SYMBOL(xItExtVpdPanel);
 139
 140 #define maxPhysicalProcessors 32
 141
 142 struct IoHriProcessorVpd xIoHriProcessorVpd[maxPhysicalProcessors] = {
 143         {
 144                 .xInstCacheOperandSize = 32,
 145                 .xDataCacheOperandSize = 32,
 146                 .xProcFreq     = 50000000,
 147                 .xTimeBaseFreq = 50000000,
 148                 .xPVR = 0x3600
 149         }
 150 };
 151
 152 /* Space for Main Store Vpd 27,200 bytes */
 153 /* May be filled in by the hypervisor so cannot end up in the BSS */
 154 u64    xMsVpd[3400] __attribute__((__section__(".data")));
 155
 156 /* Space for Recovery Log Buffer */
 157 /* May be filled in by the hypervisor so cannot end up in the BSS */
 158 u64    xRecoveryLogBuffer[32] __attribute__((__section__(".data")));
 159
 160 struct SpCommArea xSpCommArea = {
 161         .xDesc = 0xE2D7C3C2,
 162         .xFormat = 1,
 163 };
 164
 165 /* The LparMap data is now located at offset 0x6000 in head.S
 166  * It was put there so that the HvReleaseData could address it
 167  * with a 32-bit offset as required by the iSeries hypervisor
 168  *
 169  * The Naca has a pointer to the ItVpdAreas.  The hypervisor finds
 170  * the Naca via the HvReleaseData area.  The HvReleaseData has the
 171  * offset into the Naca of the pointer to the ItVpdAreas.
 172  */
 173 struct ItVpdAreas itVpdAreas = {
 174         .xSlicDesc = 0xc9a3e5c1,                /* "ItVA" */
 175         .xSlicSize = sizeof(struct ItVpdAreas),
 176         .xSlicVpdEntries = ItVpdMaxEntries,     /* # VPD array entries */
 177         .xSlicDmaEntries = ItDmaMaxEntries,     /* # DMA array entries */
 178         .xSlicMaxLogicalProcs = NR_CPUS * 2,    /* Max logical procs */
 179         .xSlicMaxPhysicalProcs = maxPhysicalProcessors, /* Max physical procs */
 180         .xSlicDmaToksOffset = offsetof(struct ItVpdAreas, xPlicDmaToks),
 181         .xSlicVpdAdrsOffset = offsetof(struct ItVpdAreas, xSlicVpdAdrs),
 182         .xSlicDmaLensOffset = offsetof(struct ItVpdAreas, xPlicDmaLens),
 183         .xSlicVpdLensOffset = offsetof(struct ItVpdAreas, xSlicVpdLens),
 184         .xSlicMaxSlotLabels = 0,                /* max slot labels */
 185         .xSlicMaxLpQueues = 1,                  /* max LP queues */
 186         .xPlicDmaLens = { 0 },                  /* DMA lengths */
 187         .xPlicDmaToks = { 0 },                  /* DMA tokens */
 188         .xSlicVpdLens = {                       /* VPD lengths */
 189                 0,0,0,                  /*  0 - 2 */
 190                 sizeof(xItExtVpdPanel), /*       3 Extended VPD   */
 191                 sizeof(struct paca_struct),     /*       4 length of Paca  */
 192                 0,                      /*       5 */
 193                 sizeof(struct ItIplParmsReal),/* 6 length of IPL parms */
 194                 26992,                  /*       7 length of MS VPD */
 195                 0,                      /*       8 */
 196                 sizeof(struct ItLpNaca),/*       9 length of LP Naca */
 197                 0,                      /*      10 */
 198                 256,                    /*      11 length of Recovery Log Buf */
 199                 sizeof(struct SpCommArea), /*   12 length of SP Comm Area */
 200                 0,0,0,                  /* 13 - 15 */
 201                 sizeof(struct IoHriProcessorVpd),/* 16 length of Proc Vpd */
 202                 0,0,0,0,0,0,            /* 17 - 22  */
 203                 sizeof(struct ItLpQueue),/*     23 length of Lp Queue */
 204                 0,0                     /* 24 - 25 */
 205                 },
 206         .xSlicVpdAdrs = {                       /* VPD addresses */
 207                 0,0,0,                  /*       0 -  2 */
 208                 &xItExtVpdPanel,        /*       3 Extended VPD */
 209                 &paca[0],               /*       4 first Paca */
 210                 0,                      /*       5 */
 211                 &xItIplParmsReal,       /*       6 IPL parms */
 212                 &xMsVpd,                /*       7 MS Vpd */
 213                 0,                      /*       8 */
 214                 &itLpNaca,              /*       9 LpNaca */
 215                 0,                      /*      10 */
 216                 &xRecoveryLogBuffer,    /*      11 Recovery Log Buffer */
 217                 &xSpCommArea,           /*      12 SP Comm Area */
 218                 0,0,0,                  /* 13 - 15 */
 219                 &xIoHriProcessorVpd,    /*      16 Proc Vpd */
 220                 0,0,0,0,0,0,            /* 17 - 22 */
 221                 &xItLpQueue,            /*      23 Lp Queue */
 222                 0,0
 223         }
 224 };
 225
 226 struct msChunks msChunks;
 227 EXPORT_SYMBOL(msChunks);
 228
 229 /* Depending on whether this is called from iSeries or pSeries setup
 230  * code, the location of the msChunks struct may or may not have
 231  * to be reloc'd, so we force the caller to do that for us by passing
 232  * in a pointer to the structure.
 233  */
 234 unsigned long
 235 msChunks_alloc(unsigned long mem, unsigned long num_chunks, unsigned long chunk_size)
 236 {
 237         unsigned long offset = reloc_offset();
 238         struct msChunks *_msChunks = PTRRELOC(&msChunks);
 239
 240         _msChunks->num_chunks  = num_chunks;
 241         _msChunks->chunk_size  = chunk_size;
 242         _msChunks->chunk_shift = __ilog2(chunk_size);
 243         _msChunks->chunk_mask  = (1UL<<_msChunks->chunk_shift)-1;
 244
 245         mem = _ALIGN(mem, sizeof(msChunks_entry));
 246         _msChunks->abs = (msChunks_entry *)(mem + offset);
 247         mem += num_chunks * sizeof(msChunks_entry);
 248
 249         return mem;
 250 }