release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/platforms/iseries/it_lp_naca.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 #ifndef _PLATFORMS_ISERIES_IT_LP_NACA_H
  19 #define _PLATFORMS_ISERIES_IT_LP_NACA_H
  20
  21 #include <linux/types.h>
  22
  23 /*
  24  *      This control block contains the data that is shared between the
  25  *      hypervisor (PLIC) and the OS.
  26  */
  27
  28 struct ItLpNaca {
  29 // CACHE_LINE_1 0x0000 - 0x007F Contains read-only data
  30         u32     xDesc;                  // Eye catcher                  x00-x03
  31         u16     xSize;                  // Size of this class           x04-x05
  32         u16     xIntHdlrOffset;         // Offset to IntHdlr array      x06-x07
  33         u8      xMaxIntHdlrEntries;     // Number of entries in array   x08-x08
  34         u8      xPrimaryLpIndex;        // LP Index of Primary          x09-x09
  35         u8      xServiceLpIndex;        // LP Ind of Service Focal Pointx0A-x0A
  36         u8      xLpIndex;               // LP Index                     x0B-x0B
  37         u16     xMaxLpQueues;           // Number of allocated queues   x0C-x0D
  38         u16     xLpQueueOffset;         // Offset to start of LP queues x0E-x0F
  39         u8      xPirEnvironMode;        // Piranha or hardware          x10-x10
  40         u8      xPirConsoleMode;        // Piranha console indicator    x11-x11
  41         u8      xPirDasdMode;           // Piranha dasd indicator       x12-x12
  42         u8      xRsvd1_0[5];            // Reserved for Piranha related x13-x17
  43         u8      flags;                  // flags, see below             x18-x1F
  44         u8      xSpVpdFormat;           // VPD areas are in CSP format  ...
  45         u8      xIntProcRatio;          // Ratio of int procs to procs  ...
  46         u8      xRsvd1_2[5];            // Reserved                     ...
  47         u16     xRsvd1_3;               // Reserved                     x20-x21
  48         u16     xPlicVrmIndex;          // VRM index of PLIC            x22-x23
  49         u16     xMinSupportedSlicVrmInd;// Min supported OS VRM index   x24-x25
  50         u16     xMinCompatableSlicVrmInd;// Min compatible OS VRM index x26-x27
  51         u64     xLoadAreaAddr;          // ER address of load area      x28-x2F
  52         u32     xLoadAreaChunks;        // Chunks for the load area     x30-x33
  53         u32     xPaseSysCallCRMask;     // Mask used to test CR before  x34-x37
  54                                         // doing an ASR switch on PASE
  55                                         // system call.
  56         u64     xSlicSegmentTablePtr;   // Pointer to Slic seg table.   x38-x3f
  57         u8      xRsvd1_4[64];           //                              x40-x7F
  58
  59 // CACHE_LINE_2 0x0080 - 0x00FF Contains local read-write data
  60         u8      xRsvd2_0[128];          // Reserved                     x00-x7F
  61
  62 // CACHE_LINE_3-6 0x0100 - 0x02FF Contains LP Queue indicators
  63 // NB: Padding required to keep xInterruptHdlr at x300 which is required
  64 // for v4r4 PLIC.
  65         u8      xOldLpQueue[128];       // LP Queue needed for v4r4     100-17F
  66         u8      xRsvd3_0[384];          // Reserved                     180-2FF
  67
  68 // CACHE_LINE_7-8 0x0300 - 0x03FF Contains the address of the OS interrupt
  69 //  handlers
  70         u64     xInterruptHdlr[32];     // Interrupt handlers           300-x3FF
  71 };
  72
  73 extern struct ItLpNaca          itLpNaca;
  74
  75 #define ITLPNACA_LPAR           0x80    /* Is LPAR installed on the system */
  76 #define ITLPNACA_PARTITIONED    0x40    /* Is the system partitioned */
  77 #define ITLPNACA_HWSYNCEDTBS    0x20    /* Hardware synced TBs */
  78 #define ITLPNACA_HMTINT         0x10    /* Utilize MHT for interrupts */
  79
  80 #endif /* _PLATFORMS_ISERIES_IT_LP_NACA_H */