1 // SPDX-License-Identifier: GPL-2.0-only
3  *  Copyright (C) 1996-2001  Linus Torvalds & author (see below)
7  *  Version 0.03	Cleaned auto-tune, added probe
20  * Samuel Thibault <samuel.thibault@ens-lyon.org>
40  * I/O ports are 0x30-0x31 (and 0x32-0x33 for qd6580)
41  *            or 0xb0-0xb1 (and 0xb2-0xb3 for qd6580)
42  *	-- qd6500 is a single IDE interface
43  *	-- qd6580 is a dual IDE interface
51  * base: Timer1
54  * base+0x01: Config (R/O)
66  * base+0x02: Timer2 (qd6580 only)
69  * base+0x03: Control (qd6580 only)
71  * bits 0-3 must always be set 1
78  * bit 2-4 : always 0
81  * bit 7 : set 1 for non-ATAPI devices on primary port
82  *	(maybe read-ahead and post-write buffer ?)
85 static int timings[4]={-1,-1,-1,-1}; /* stores current timing for each timer */
101 	outb(drive->select | ATA_DEVICE_OBS, drive->hwif->io_ports.device_addr);  in qd65xx_dev_select()
118 		act_cyc =  9 - IDE_IN(active_time   * clk / 1000 + 1, 2,  9);  in qd6500_compute_timing()
119 		rec_cyc = 15 - IDE_IN(recovery_time * clk / 1000 + 1, 0, 15);  in qd6500_compute_timing()
121 		act_cyc =  8 - IDE_IN(active_time   * clk / 1000 + 1, 1,  8);  in qd6500_compute_timing()
122 		rec_cyc = 18 - IDE_IN(recovery_time * clk / 1000 + 1, 3, 18);  in qd6500_compute_timing()
139 	act_cyc = 17 - IDE_IN(active_time   * clk / 1000 + 1, 2, 17);  in qd6580_compute_timing()
140 	rec_cyc = 15 - IDE_IN(recovery_time * clk / 1000 + 1, 2, 15);  in qd6580_compute_timing()
155 	char *m = (char *)&drive->id[ATA_ID_PROD];  in qd_find_disk_type()
162 	ide_fixstring(model, ATA_ID_PROD_LEN, 1); /* byte-swap */  in qd_find_disk_type()
164 	for (p = qd65xx_timing ; p->offset != -1 ; p++) {  in qd_find_disk_type()
165 		if (!strncmp(p->model, model+p->offset, 4)) {  in qd_find_disk_type()
166 			printk(KERN_DEBUG "%s: listed !\n", drive->name);  in qd_find_disk_type()
167 			*active_time = p->active;  in qd_find_disk_type()
168 			*recovery_time = p->recovery;  in qd_find_disk_type()
189 	printk(KERN_DEBUG "%s: %#x\n", drive->name, timing);  in qd_set_timing()
194 	u16 *id = drive->id;  in qd6500_set_pio_mode()
198 	/* FIXME: use drive->pio_mode value */  in qd6500_set_pio_mode()
202 		printk(KERN_INFO "%s: PIO mode%d\n", drive->name,  in qd6500_set_pio_mode()
205 		recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120;  in qd6500_set_pio_mode()
208 	qd_set_timing(drive, qd6500_compute_timing(drive->hwif,  in qd6500_set_pio_mode()
214 	const u8 pio = drive->pio_mode - XFER_PIO_0;  in qd6580_set_pio_mode()
215 	struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);  in qd6580_set_pio_mode()  local
219 	u8 base = (hwif->config_data & 0xff00) >> 8;  in qd6580_set_pio_mode()  local
221 	if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) {  in qd6580_set_pio_mode()
229 					recovery_time = cycle_time - 102;  in qd6580_set_pio_mode()
231 					printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name);  in qd6580_set_pio_mode()
236 					recovery_time = cycle_time - 61;  in qd6580_set_pio_mode()
238 					printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name);  in qd6580_set_pio_mode()
243 					recovery_time = cycle_time - 120;  in qd6580_set_pio_mode()
245 					active_time = t->active;  in qd6580_set_pio_mode()
246 					recovery_time = cycle_time - active_time;  in qd6580_set_pio_mode()
249 		printk(KERN_INFO "%s: PIO mode%d\n", drive->name,pio);  in qd6580_set_pio_mode()
252 	if (!hwif->channel && drive->media != ide_disk) {  in qd6580_set_pio_mode()
254 		printk(KERN_WARNING "%s: ATAPI: disabled read-ahead FIFO "  in qd6580_set_pio_mode()
255 			"and post-write buffer on %s.\n",  in qd6580_set_pio_mode()
256 			drive->name, hwif->name);  in qd6580_set_pio_mode()
281 		printk(KERN_ERR "Outch ! the probe for qd65xx isn't reliable !\n");  in qd_testreg()
292 	ide_hwif_t *hwif = drive->hwif;  in qd6500_init_dev()
293 	u8 base = (hwif->config_data & 0xff00) >> 8;  in qd6500_init_dev()  local
301 	ide_hwif_t *hwif = drive->hwif;  in qd6580_init_dev()
303 	u8 base = (hwif->config_data & 0xff00) >> 8;  in qd6580_init_dev()  local
306 	if (hwif->host_flags & IDE_HFLAG_SINGLE) {  in qd6580_init_dev()
310 		t2 = t1 = hwif->channel ? QD6580_DEF_DATA2 : QD6580_DEF_DATA;  in qd6580_init_dev()
312 	ide_set_drivedata(drive, (void *)((drive->dn & 1) ? t2 : t1));  in qd6580_init_dev()
355 static int __init qd_probe(int base)  in qd_probe()  argument
363 	if (! ((config & QD_CONFIG_BASEPORT) >> 1 == (base == 0xb0)) )  in qd_probe()
364 		return -ENODEV;  in qd_probe()
373 		if (qd_testreg(base))  in qd_probe()
374 			 return -ENODEV;	/* bad register */  in qd_probe()
378 			return -ENODEV;  in qd_probe()
381 		printk(KERN_NOTICE "qd6500 at %#x\n", base);  in qd_probe()
390 		if (qd_testreg(base) || qd_testreg(base + 0x02))  in qd_probe()
391 			return -ENODEV;	/* bad registers */  in qd_probe()
395 		printk(KERN_NOTICE "qd6580 at %#x\n", base);  in qd_probe()
409 		return -ENODEV;  in qd_probe()
412 	rc = ide_legacy_device_add(&d, (base << 8) | config);  in qd_probe()
427 	int rc1, rc2 = -ENODEV;  in qd65xx_init()
430 		return -ENODEV;  in qd65xx_init()
437 		return -ENODEV;  in qd65xx_init()