1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _SYS_DOOR_DATA_H 28*0Sstevel@tonic-gate #define _SYS_DOOR_DATA_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <sys/types.h> 33*0Sstevel@tonic-gate #include <sys/door.h> 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #if defined(_KERNEL) 36*0Sstevel@tonic-gate #include <sys/thread.h> 37*0Sstevel@tonic-gate #include <sys/file.h> 38*0Sstevel@tonic-gate #endif 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #ifdef __cplusplus 41*0Sstevel@tonic-gate extern "C" { 42*0Sstevel@tonic-gate #endif 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate #if defined(_KERNEL) 45*0Sstevel@tonic-gate /* door_return() stack layout */ 46*0Sstevel@tonic-gate typedef struct door_layout { 47*0Sstevel@tonic-gate caddr_t dl_descp; /* start of descriptors (or 0) */ 48*0Sstevel@tonic-gate caddr_t dl_datap; /* start of data (or 0) */ 49*0Sstevel@tonic-gate caddr_t dl_infop; /* start of door_info_t (or 0) */ 50*0Sstevel@tonic-gate caddr_t dl_resultsp; /* start of door_results{32}_t */ 51*0Sstevel@tonic-gate caddr_t dl_sp; /* final stack pointer (non-biased) */ 52*0Sstevel@tonic-gate } door_layout_t; 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate /* 55*0Sstevel@tonic-gate * Per-thread data associated with door invocations. Each door invocation 56*0Sstevel@tonic-gate * effects the client structure of one thread and the server structure of 57*0Sstevel@tonic-gate * another. This way, the server thread for one door_call() can make door 58*0Sstevel@tonic-gate * calls of its own without interference. 59*0Sstevel@tonic-gate */ 60*0Sstevel@tonic-gate typedef struct door_client { 61*0Sstevel@tonic-gate door_arg_t d_args; /* Door arg/results */ 62*0Sstevel@tonic-gate caddr_t d_buf; /* Temp buffer for data transfer */ 63*0Sstevel@tonic-gate int d_bufsize; /* Size of temp buffer */ 64*0Sstevel@tonic-gate int d_fpp_size; /* Number of File ptrs */ 65*0Sstevel@tonic-gate struct file **d_fpp; /* File ptrs */ 66*0Sstevel@tonic-gate int d_error; /* Error (if any) */ 67*0Sstevel@tonic-gate kcondvar_t d_cv; 68*0Sstevel@tonic-gate uchar_t d_hold; /* Thread needs to stick around */ 69*0Sstevel@tonic-gate uchar_t d_upcall; /* Kernel level upcall */ 70*0Sstevel@tonic-gate uchar_t d_noresults; /* No results allowed */ 71*0Sstevel@tonic-gate uchar_t d_overflow; /* Result overflow occurred */ 72*0Sstevel@tonic-gate uchar_t d_kernel; /* Kernel door server */ 73*0Sstevel@tonic-gate } door_client_t; 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate typedef struct door_server { 76*0Sstevel@tonic-gate struct _kthread *d_caller; /* Door caller */ 77*0Sstevel@tonic-gate struct _kthread *d_servers; /* List of door servers */ 78*0Sstevel@tonic-gate struct door_node *d_active; /* Active door */ 79*0Sstevel@tonic-gate struct door_node *d_pool; /* our server thread pool */ 80*0Sstevel@tonic-gate door_layout_t d_layout; 81*0Sstevel@tonic-gate caddr_t d_sp; /* Saved thread stack base */ 82*0Sstevel@tonic-gate size_t d_ssize; /* Saved thread stack size */ 83*0Sstevel@tonic-gate kcondvar_t d_cv; 84*0Sstevel@tonic-gate uchar_t d_hold; /* Thread needs to stick around */ 85*0Sstevel@tonic-gate uchar_t d_invbound; /* Thread is bound to invalid door */ 86*0Sstevel@tonic-gate uchar_t d_layout_done; /* d_layout has been filled */ 87*0Sstevel@tonic-gate } door_server_t; 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate typedef struct door_data { 90*0Sstevel@tonic-gate door_client_t d_client; 91*0Sstevel@tonic-gate door_server_t d_server; 92*0Sstevel@tonic-gate } door_data_t; 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate #define DOOR_CLIENT(dp) (&(dp)->d_client) 95*0Sstevel@tonic-gate #define DOOR_SERVER(dp) (&(dp)->d_server) 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate /* 98*0Sstevel@tonic-gate * Macros for holding a thread in place. Takes a door_server_t or 99*0Sstevel@tonic-gate * door_client_t pointer as an argument. 100*0Sstevel@tonic-gate */ 101*0Sstevel@tonic-gate #define DOOR_T_HELD(cst) ((cst)->d_hold) 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate #define DOOR_T_HOLD(cst) \ 104*0Sstevel@tonic-gate (ASSERT(!DOOR_T_HELD(cst)), ((cst)->d_hold = 1)) 105*0Sstevel@tonic-gate #define DOOR_T_RELEASE(cst) \ 106*0Sstevel@tonic-gate (ASSERT(DOOR_T_HELD(cst)), ((cst)->d_hold = 0), \ 107*0Sstevel@tonic-gate cv_broadcast(&(cst)->d_cv)) 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate /* 110*0Sstevel@tonic-gate * Roundup buffer size when passing/returning data via kernel buffer. 111*0Sstevel@tonic-gate * This cuts down on the number of overflows that occur on return 112*0Sstevel@tonic-gate */ 113*0Sstevel@tonic-gate #define DOOR_ROUND 128 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate #endif /* defined(_KERNEL) */ 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate #ifdef __cplusplus 118*0Sstevel@tonic-gate } 119*0Sstevel@tonic-gate #endif 120*0Sstevel@tonic-gate 121*0Sstevel@tonic-gate #endif /* _SYS_DOOR_DATA_H */ 122