1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2000 Jens Axboe <axboe@suse.de> 4*4882a593Smuzhiyun * Copyright (C) 2001-2004 Peter Osterlund <petero2@telia.com> 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * May be copied or modified under the terms of the GNU General Public 7*4882a593Smuzhiyun * License. See linux/COPYING for more information. 8*4882a593Smuzhiyun * 9*4882a593Smuzhiyun * Packet writing layer for ATAPI and SCSI CD-R, CD-RW, DVD-R, and 10*4882a593Smuzhiyun * DVD-RW devices. 11*4882a593Smuzhiyun * 12*4882a593Smuzhiyun */ 13*4882a593Smuzhiyun #ifndef _UAPI__PKTCDVD_H 14*4882a593Smuzhiyun #define _UAPI__PKTCDVD_H 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #include <linux/types.h> 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun /* 19*4882a593Smuzhiyun * 1 for normal debug messages, 2 is very verbose. 0 to turn it off. 20*4882a593Smuzhiyun */ 21*4882a593Smuzhiyun #define PACKET_DEBUG 1 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #define MAX_WRITERS 8 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #define PKT_RB_POOL_SIZE 512 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /* 28*4882a593Smuzhiyun * How long we should hold a non-full packet before starting data gathering. 29*4882a593Smuzhiyun */ 30*4882a593Smuzhiyun #define PACKET_WAIT_TIME (HZ * 5 / 1000) 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun /* 33*4882a593Smuzhiyun * use drive write caching -- we need deferred error handling to be 34*4882a593Smuzhiyun * able to successfully recover with this option (drive will return good 35*4882a593Smuzhiyun * status as soon as the cdb is validated). 36*4882a593Smuzhiyun */ 37*4882a593Smuzhiyun #if defined(CONFIG_CDROM_PKTCDVD_WCACHE) 38*4882a593Smuzhiyun #define USE_WCACHING 1 39*4882a593Smuzhiyun #else 40*4882a593Smuzhiyun #define USE_WCACHING 0 41*4882a593Smuzhiyun #endif 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun /* 44*4882a593Smuzhiyun * No user-servicable parts beyond this point -> 45*4882a593Smuzhiyun */ 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun /* 48*4882a593Smuzhiyun * device types 49*4882a593Smuzhiyun */ 50*4882a593Smuzhiyun #define PACKET_CDR 1 51*4882a593Smuzhiyun #define PACKET_CDRW 2 52*4882a593Smuzhiyun #define PACKET_DVDR 3 53*4882a593Smuzhiyun #define PACKET_DVDRW 4 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun /* 56*4882a593Smuzhiyun * flags 57*4882a593Smuzhiyun */ 58*4882a593Smuzhiyun #define PACKET_WRITABLE 1 /* pd is writable */ 59*4882a593Smuzhiyun #define PACKET_NWA_VALID 2 /* next writable address valid */ 60*4882a593Smuzhiyun #define PACKET_LRA_VALID 3 /* last recorded address valid */ 61*4882a593Smuzhiyun #define PACKET_MERGE_SEGS 4 /* perform segment merging to keep */ 62*4882a593Smuzhiyun /* underlying cdrom device happy */ 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun /* 65*4882a593Smuzhiyun * Disc status -- from READ_DISC_INFO 66*4882a593Smuzhiyun */ 67*4882a593Smuzhiyun #define PACKET_DISC_EMPTY 0 68*4882a593Smuzhiyun #define PACKET_DISC_INCOMPLETE 1 69*4882a593Smuzhiyun #define PACKET_DISC_COMPLETE 2 70*4882a593Smuzhiyun #define PACKET_DISC_OTHER 3 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun /* 73*4882a593Smuzhiyun * write type, and corresponding data block type 74*4882a593Smuzhiyun */ 75*4882a593Smuzhiyun #define PACKET_MODE1 1 76*4882a593Smuzhiyun #define PACKET_MODE2 2 77*4882a593Smuzhiyun #define PACKET_BLOCK_MODE1 8 78*4882a593Smuzhiyun #define PACKET_BLOCK_MODE2 10 79*4882a593Smuzhiyun 80*4882a593Smuzhiyun /* 81*4882a593Smuzhiyun * Last session/border status 82*4882a593Smuzhiyun */ 83*4882a593Smuzhiyun #define PACKET_SESSION_EMPTY 0 84*4882a593Smuzhiyun #define PACKET_SESSION_INCOMPLETE 1 85*4882a593Smuzhiyun #define PACKET_SESSION_RESERVED 2 86*4882a593Smuzhiyun #define PACKET_SESSION_COMPLETE 3 87*4882a593Smuzhiyun 88*4882a593Smuzhiyun #define PACKET_MCN "4a656e734178626f65323030300000" 89*4882a593Smuzhiyun 90*4882a593Smuzhiyun #undef PACKET_USE_LS 91*4882a593Smuzhiyun 92*4882a593Smuzhiyun #define PKT_CTRL_CMD_SETUP 0 93*4882a593Smuzhiyun #define PKT_CTRL_CMD_TEARDOWN 1 94*4882a593Smuzhiyun #define PKT_CTRL_CMD_STATUS 2 95*4882a593Smuzhiyun 96*4882a593Smuzhiyun struct pkt_ctrl_command { 97*4882a593Smuzhiyun __u32 command; /* in: Setup, teardown, status */ 98*4882a593Smuzhiyun __u32 dev_index; /* in/out: Device index */ 99*4882a593Smuzhiyun __u32 dev; /* in/out: Device nr for cdrw device */ 100*4882a593Smuzhiyun __u32 pkt_dev; /* in/out: Device nr for packet device */ 101*4882a593Smuzhiyun __u32 num_devices; /* out: Largest device index + 1 */ 102*4882a593Smuzhiyun __u32 padding; /* Not used */ 103*4882a593Smuzhiyun }; 104*4882a593Smuzhiyun 105*4882a593Smuzhiyun /* 106*4882a593Smuzhiyun * packet ioctls 107*4882a593Smuzhiyun */ 108*4882a593Smuzhiyun #define PACKET_IOCTL_MAGIC ('X') 109*4882a593Smuzhiyun #define PACKET_CTRL_CMD _IOWR(PACKET_IOCTL_MAGIC, 1, struct pkt_ctrl_command) 110*4882a593Smuzhiyun 111*4882a593Smuzhiyun 112*4882a593Smuzhiyun #endif /* _UAPI__PKTCDVD_H */ 113