1 // SPDX-License-Identifier: GPL-2.0
5  * Copyright (C) 1999, 2001-2003 Hewlett-Packard Co
6  *	David Mosberger-Tang <davidm@hpl.hp.com>
28 #define DEFAULT_SIMSCSI_ROOT	"/var/ski-disks/sd"
65 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
70 } queue[SIMSCSI_REQ_QUEUE_LEN];  variable
82  * to use /foo/bar/disk[a-z] as disk images
83  * you have to specify simscsi=/foo/bar/disk on the command line
90 		printk(KERN_ERR "simscsi_setup: prefix too long---using default %s\n",  in simscsi_setup()
104 	while ((sc = queue[rd].sc) != NULL) {  in simscsi_interrupt()
106 		queue[rd].sc = NULL;  in simscsi_interrupt()
108 			printk("simscsi_interrupt: done with %ld\n", sc->serial_number);  in simscsi_interrupt()
109 		(*sc->scsi_done)(sc);  in simscsi_interrupt()
132 	stat.fd = desc[sc->device->id];  in simscsi_sg_readwrite()
136 		req.len  = sl->length;  in simscsi_sg_readwrite()
140 			       scsi_sg_count(sc) - i, sl->length);  in simscsi_sg_readwrite()
146 			sc->result = DID_ERROR << 16;  in simscsi_sg_readwrite()
149 		offset +=  sl->length;  in simscsi_sg_readwrite()
151 	sc->result = GOOD;  in simscsi_sg_readwrite()
155  * function handling both READ_6/WRITE_6 (non-scatter/gather mode)
164 	offset = (((sc->cmnd[1] & 0x1f) << 16) | (sc->cmnd[2] << 8) | sc->cmnd[3])*512;  in simscsi_readwrite6()
184 		ia64_ssc(fd, 1, __pa(&req), ((sectors | bit) - 1)*512, SSC_READ);  in simscsi_get_disk_size()
190 	return sectors - 1;	/* return last valid sector number */  in simscsi_get_disk_size()
198 	offset = (((unsigned long)sc->cmnd[2] << 24)   in simscsi_readwrite10()
199 		| ((unsigned long)sc->cmnd[3] << 16)  in simscsi_readwrite10()
200 		| ((unsigned long)sc->cmnd[4] <<  8)   in simscsi_readwrite10()
201 		| ((unsigned long)sc->cmnd[5] <<  0))*512UL;  in simscsi_readwrite10()
208 	unsigned int target_id = sc->device->id;  in simscsi_queuecommand_lck()
218 		       target_id, sc->cmnd[0], sc->serial_number, sp, done);  in simscsi_queuecommand_lck()
221 	sc->result = DID_BAD_TARGET << 16;  in simscsi_queuecommand_lck()
222 	sc->scsi_done = done;  in simscsi_queuecommand_lck()
223 	if (target_id <= 15 && sc->device->lun == 0) {  in simscsi_queuecommand_lck()
224 		switch (sc->cmnd[0]) {  in simscsi_queuecommand_lck()
239 			buf[2] = 2;	/* SCSI-2 compliant device */  in simscsi_queuecommand_lck()
240 			buf[3] = 2;	/* SCSI-2 response data format */  in simscsi_queuecommand_lck()
247 			sc->result = GOOD;  in simscsi_queuecommand_lck()
251 			sc->result = GOOD;  in simscsi_queuecommand_lck()
295 			sc->result = GOOD;  in simscsi_queuecommand_lck()
300 			/* sd.c uses this to determine whether disk does write-caching. */  in simscsi_queuecommand_lck()
303 			sc->result = GOOD;  in simscsi_queuecommand_lck()
311 			panic("simscsi: unknown SCSI command %u\n", sc->cmnd[0]);  in simscsi_queuecommand_lck()
314 	if (sc->result == DID_BAD_TARGET) {  in simscsi_queuecommand_lck()
315 		sc->result |= DRIVER_SENSE << 24;  in simscsi_queuecommand_lck()
316 		sc->sense_buffer[0] = 0x70;  in simscsi_queuecommand_lck()
317 		sc->sense_buffer[2] = 0x00;  in simscsi_queuecommand_lck()
320 		panic("Attempt to queue command while command is pending!!");  in simscsi_queuecommand_lck()
323 	queue[wr].sc = sc;  in simscsi_queuecommand_lck()
346 	.this_id		= -1,
360 		return -ENOMEM;  in simscsi_init()