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 28struct 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 xInterrruptHdlr 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 73extern 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 */ 81