patch-1.3.63 linux/drivers/block/ide_modes.h

• Lines: 143
• Date: Mon Feb 12 07:04:02 1996
• Orig file: v1.3.62/linux/drivers/block/ide_modes.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.62/linux/drivers/block/ide_modes.h linux/drivers/block/ide_modes.h
@@ -0,0 +1,142 @@
+#ifndef _IDE_MODES_H
+#define _IDE_MODES_H
+/*
+ *  linux/drivers/block/ide_modes.h
+ *
+ *  Copyright (C) 1996  Linus Torvalds, Igor Abramov, and Mark Lord
+ */
+
+/*
+ * Shared data/functions for determining best PIO mode for an IDE drive.
+ * Most of this stuff originally lived in cmd640.c, and changes to the
+ * ide_pio_blacklist[] table should be made with EXTREME CAUTION to avoid
+ * breaking the fragile cmd640.c support.
+ */
+
+#if defined(CONFIG_BLK_DEV_CMD640) || defined(CONFIG_IDE_CHIPSETS)
+
+#ifndef _IDE_C
+
+int ide_scan_pio_blacklist (char *model);
+unsigned int ide_get_best_pio_mode (ide_drive_t *drive);
+
+#else /* _IDE_C */
+
+/*
+ * Black list. Some drives incorrectly report their maximal PIO mode,
+ * at least in respect to CMD640. Here we keep info on some known drives.
+ */
+static struct ide_pio_info {
+	const char	*name;
+	int		pio;
+} ide_pio_blacklist [] = {
+/*	{ "Conner Peripherals 1275MB - CFS1275A", 4 }, */
+
+	{ "WDC AC2700",  3 },
+	{ "WDC AC2540",  3 },
+	{ "WDC AC2420",  3 },
+	{ "WDC AC2340",  3 },
+	{ "WDC AC2250",  0 },
+	{ "WDC AC2200",  0 },
+	{ "WDC AC2120",  0 },
+	{ "WDC AC2850",  3 },
+	{ "WDC AC1270",  3 },
+	{ "WDC AC1170",  3 },
+	{ "WDC AC1210",  1 },
+	{ "WDC AC280",   0 },
+/*	{ "WDC AC21000", 4 }, */
+	{ "WDC AC31000", 3 },
+/*	{ "WDC AC21200", 4 }, */
+	{ "WDC AC31200", 3 },
+/*	{ "WDC AC31600", 4 }, */
+
+	{ "Maxtor 7131 AT", 1 },
+	{ "Maxtor 7171 AT", 1 },
+	{ "Maxtor 7213 AT", 1 },
+	{ "Maxtor 7245 AT", 1 },
+	{ "Maxtor 7345 AT", 1 },
+	{ "Maxtor 7546 AT", 3 },
+	{ "Maxtor 7540 AV", 3 },
+
+	{ "SAMSUNG SHD-3121A", 1 },
+	{ "SAMSUNG SHD-3122A", 1 },
+	{ "SAMSUNG SHD-3172A", 1 },
+
+/*	{ "ST51080A", 4 },
+ *	{ "ST51270A", 4 },
+ *	{ "ST31220A", 4 },
+ *	{ "ST31640A", 4 },
+ *	{ "ST32140A", 4 },
+ *	{ "ST3780A",  4 },
+ */
+	{ "ST5660A",  3 },
+	{ "ST3660A",  3 },
+	{ "ST3630A",  3 },
+	{ "ST3655A",  3 },
+	{ "ST3391A",  3 },
+	{ "ST3390A",  1 },
+	{ "ST3600A",  1 },
+	{ "ST3290A",  0 },
+	{ "ST3144A",  0 },
+
+	{ "QUANTUM ELS127A", 0 },
+	{ "QUANTUM ELS170A", 0 },
+	{ "QUANTUM LPS240A", 0 },
+	{ "QUANTUM LPS210A", 3 },
+	{ "QUANTUM LPS270A", 3 },
+	{ "QUANTUM LPS365A", 3 },
+	{ "QUANTUM LPS540A", 3 },
+	{ "QUANTUM FIREBALL", 3 }, /* For models 540/640/1080/1280 */
+				   /* 1080A works fine in mode4 with triton */
+	{ NULL,	0 }
+};
+
+/*
+ * This routine searches the ide_pio_blacklist for an entry
+ * matching the start/whole of the supplied model name.
+ *
+ * Returns -1 if no match found.
+ * Otherwise returns the recommended PIO mode from ide_pio_blacklist[].
+ */
+int ide_scan_pio_blacklist (char *model)
+{
+	struct ide_pio_info *p;
+
+	for (p = ide_pio_blacklist; p->name != NULL; p++) {
+		if (strncmp(p->name, model, strlen(p->name)) == 0)
+			return p->pio;
+	}
+	return -1;
+}
+
+/*
+ * This routine returns the recommended PIO mode for a given drive,
+ * based on the drive->id information and the ide_pio_blacklist[].
+ * This is used by most chipset support modules when "auto-tuning".
+ */
+unsigned int ide_get_best_pio_mode (ide_drive_t *drive)
+{
+	unsigned int pio = 0;
+	struct hd_driveid *id = drive->id;
+
+	if (id != NULL) {
+		if (HWIF(drive)->chipset != ide_cmd640 && !strcmp("QUANTUM FIREBALL1080A", id->model))
+			pio = 4;
+		else
+			pio = ide_scan_pio_blacklist(id->model);
+		if (pio == -1) {
+			pio = (id->tPIO < 2) ? id->tPIO : 2;
+			if (id->field_valid & 2) {
+				byte modes = id->eide_pio_modes;
+				if      (modes & 4)	pio = 5;
+				else if (modes & 2)	pio = 4;
+				else if (modes & 1)	pio = 3;
+			}
+		}
+	}
+	return pio;
+}
+
+#endif /* _IDE_C */
+#endif /* defined(CONFIG_BLK_DEV_CMD640) || defined(CONFIG_IDE_CHIPSETS) */
+#endif /* _IDE_MODES_H */