patch-2.4.23 linux-2.4.23/drivers/ide/legacy/sibyte.c

• Lines: 80
• Date: 2003-11-28 10:26:20.000000000 -0800
• Orig file: linux-2.4.22/drivers/ide/legacy/sibyte.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.22/drivers/ide/legacy/sibyte.c linux-2.4.23/drivers/ide/legacy/sibyte.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2001, 2002, 2003 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+/*  Derived loosely from ide-pmac.c, so:
+ *  
+ *  Copyright (C) 1998 Paul Mackerras.
+ *  Copyright (C) 1995-1998 Mark Lord
+ */
+#include <linux/kernel.h>
+#include <linux/ide.h>
+
+#include <asm/sibyte/board.h>
+
+#define SIBYTE_IDE_BASE        (IO_SPACE_BASE + IDE_PHYS - mips_io_port_base)
+#define SIBYTE_IDE_REG(pcaddr) (SIBYTE_IDE_BASE + ((pcaddr) << 5))
+
+extern void sibyte_set_ideops(ide_hwif_t *hwif);
+
+void __init sibyte_ide_probe(void)
+{
+	int i;
+	ide_hwif_t *hwif = NULL;
+
+	/* 
+	 * Find the first untaken slot in hwifs.  Also set the io ops
+	 * to the non-swapping SiByte versions.  XXXKW It would be
+	 * nice to find a safe place to do this outside of
+	 * ide-sibyte.c so PCI-IDE would work without the SiByte
+	 * driver.
+	 */
+	for (i = 0; i < MAX_HWIFS; i++) {
+		sibyte_set_ideops(&ide_hwifs[i]);
+		if (!ide_hwifs[i].io_ports[IDE_DATA_OFFSET] && (hwif == NULL)) {
+			hwif = &ide_hwifs[i];
+		}
+	}
+	if (hwif == NULL) {
+		printk("No space for SiByte onboard IDE driver in ide_hwifs[].  Not enabled.\n");
+		return;
+	}
+
+	/*
+	 * Set up our stuff; we're a little odd because our io_ports
+	 * aren't in the usual place, and byte-swapping isn't
+	 * necessary.
+	 */
+	hwif->hw.io_ports[IDE_DATA_OFFSET]    = SIBYTE_IDE_REG(0x1f0);
+	hwif->hw.io_ports[IDE_ERROR_OFFSET]   = SIBYTE_IDE_REG(0x1f1);
+	hwif->hw.io_ports[IDE_NSECTOR_OFFSET] = SIBYTE_IDE_REG(0x1f2);
+	hwif->hw.io_ports[IDE_SECTOR_OFFSET]  = SIBYTE_IDE_REG(0x1f3);
+	hwif->hw.io_ports[IDE_LCYL_OFFSET]    = SIBYTE_IDE_REG(0x1f4);
+	hwif->hw.io_ports[IDE_HCYL_OFFSET]    = SIBYTE_IDE_REG(0x1f5);
+	hwif->hw.io_ports[IDE_SELECT_OFFSET]  = SIBYTE_IDE_REG(0x1f6);
+	hwif->hw.io_ports[IDE_STATUS_OFFSET]  = SIBYTE_IDE_REG(0x1f7);
+	hwif->hw.io_ports[IDE_CONTROL_OFFSET] = SIBYTE_IDE_REG(0x3f6);
+	hwif->hw.irq                          = K_INT_GB_IDE;
+	hwif->irq                             = hwif->hw.irq;
+	hwif->noprobe                         = 0;
+	hwif->hw.ack_intr                     = NULL;
+	hwif->mmio                            = 2;
+
+	memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
+	printk(KERN_INFO "SiByte onboard IDE configured as device %i\n", hwif-ide_hwifs);
+}