Initial import

1 files changed, 278 insertions, 0 deletions

diff --git a/drivers/block/smart1,2.h b/drivers/block/smart1,2.h
new file mode 100644
index 000000000..e5565fbae
--- /dev/null
+++ b/drivers/block/smart1,2.h
@@ -0,0 +1,278 @@
+/*
+ *    Disk Array driver for Compaq SMART2 Controllers
+ *    Copyright 1998 Compaq Computer 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, GOOD TITLE or
+ *    NON INFRINGEMENT.  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *    Questions/Comments/Bugfixes to iss_storagedev@hp.com
+ *
+ *    If you want to make changes, improve or add functionality to this
+ *    driver, you'll probably need the Compaq Array Controller Interface
+ *    Specificiation (Document number ECG086/1198)
+ */
+
+/*
+ * This file contains the controller communication implementation for
+ * Compaq SMART-1 and SMART-2 controllers.  To the best of my knowledge,
+ * this should support:
+ *
+ *  PCI:
+ *  SMART-2/P, SMART-2DH, SMART-2SL, SMART-221, SMART-3100ES, SMART-3200
+ *  Integerated SMART Array Controller, SMART-4200, SMART-4250ES
+ *
+ *  EISA:
+ *  SMART-2/E, SMART, IAES, IDA-2, IDA
+ */
+
+/*
+ * Memory mapped FIFO interface (SMART 42xx cards)
+ */
+static void smart4_submit_command(ctlr_info_t *h, cmdlist_t *c)
+{
+        writel(c->busaddr, h->vaddr + S42XX_REQUEST_PORT_OFFSET);
+}
+
+/*  
+ *  This card is the opposite of the other cards.  
+ *   0 turns interrupts on... 
+ *   0x08 turns them off... 
+ */
+static void smart4_intr_mask(ctlr_info_t *h, unsigned long val)
+{
+	if (val) 
+	{ /* Turn interrupts on */
+		writel(0, h->vaddr + S42XX_REPLY_INTR_MASK_OFFSET);
+	} else /* Turn them off */
+	{
+        	writel( S42XX_INTR_OFF, 
+			h->vaddr + S42XX_REPLY_INTR_MASK_OFFSET);
+	}
+}
+
+/*
+ *  For older cards FIFO Full = 0. 
+ *  On this card 0 means there is room, anything else FIFO Full. 
+ * 
+ */ 
+static unsigned long smart4_fifo_full(ctlr_info_t *h)
+{
+	
+        return (!readl(h->vaddr + S42XX_REQUEST_PORT_OFFSET));
+}
+
+/* This type of controller returns -1 if the fifo is empty, 
+ *    Not 0 like the others.
+ *    And we need to let it know we read a value out 
+ */ 
+static unsigned long smart4_completed(ctlr_info_t *h)
+{
+	long register_value 
+		= readl(h->vaddr + S42XX_REPLY_PORT_OFFSET);
+
+	/* Fifo is empty */
+	if( register_value == 0xffffffff)
+		return 0; 	
+
+	/* Need to let it know we got the reply */
+	/* We do this by writing a 0 to the port we just read from */
+	writel(0, h->vaddr + S42XX_REPLY_PORT_OFFSET);
+
+	return ((unsigned long) register_value); 
+}
+
+ /*
+ *  This hardware returns interrupt pending at a different place and 
+ *  it does not tell us if the fifo is empty, we will have check  
+ *  that by getting a 0 back from the command_completed call. 
+ */
+static unsigned long smart4_intr_pending(ctlr_info_t *h)
+{
+	unsigned long register_value  = 
+		readl(h->vaddr + S42XX_INTR_STATUS);
+
+	if( register_value &  S42XX_INTR_PENDING) 
+		return  FIFO_NOT_EMPTY;	
+	return 0 ;
+}
+
+static struct access_method smart4_access = {
+	smart4_submit_command,
+	smart4_intr_mask,
+	smart4_fifo_full,
+	smart4_intr_pending,
+	smart4_completed,
+};
+
+/*
+ * Memory mapped FIFO interface (PCI SMART2 and SMART 3xxx cards)
+ */
+static void smart2_submit_command(ctlr_info_t *h, cmdlist_t *c)
+{
+	writel(c->busaddr, h->vaddr + COMMAND_FIFO);
+}
+
+static void smart2_intr_mask(ctlr_info_t *h, unsigned long val)
+{
+	writel(val, h->vaddr + INTR_MASK);
+}
+
+static unsigned long smart2_fifo_full(ctlr_info_t *h)
+{
+	return readl(h->vaddr + COMMAND_FIFO);
+}
+
+static unsigned long smart2_completed(ctlr_info_t *h)
+{
+	return readl(h->vaddr + COMMAND_COMPLETE_FIFO);
+}
+
+static unsigned long smart2_intr_pending(ctlr_info_t *h)
+{
+	return readl(h->vaddr + INTR_PENDING);
+}
+
+static struct access_method smart2_access = {
+	smart2_submit_command,
+	smart2_intr_mask,
+	smart2_fifo_full,
+	smart2_intr_pending,
+	smart2_completed,
+};
+
+/*
+ *  IO access for SMART-2/E cards
+ */
+static void smart2e_submit_command(ctlr_info_t *h, cmdlist_t *c)
+{
+	outl(c->busaddr, h->io_mem_addr + COMMAND_FIFO);
+}
+
+static void smart2e_intr_mask(ctlr_info_t *h, unsigned long val)
+{
+	outl(val, h->io_mem_addr + INTR_MASK);
+}
+
+static unsigned long smart2e_fifo_full(ctlr_info_t *h)
+{
+	return inl(h->io_mem_addr + COMMAND_FIFO);
+}
+
+static unsigned long smart2e_completed(ctlr_info_t *h)
+{
+	return inl(h->io_mem_addr + COMMAND_COMPLETE_FIFO);
+}
+
+static unsigned long smart2e_intr_pending(ctlr_info_t *h)
+{
+	return inl(h->io_mem_addr + INTR_PENDING);
+}
+
+static struct access_method smart2e_access = {
+	smart2e_submit_command,
+	smart2e_intr_mask,
+	smart2e_fifo_full,
+	smart2e_intr_pending,
+	smart2e_completed,
+};
+
+/*
+ *  IO access for older SMART-1 type cards
+ */
+#define SMART1_SYSTEM_MASK		0xC8E
+#define SMART1_SYSTEM_DOORBELL		0xC8F
+#define SMART1_LOCAL_MASK		0xC8C
+#define SMART1_LOCAL_DOORBELL		0xC8D
+#define SMART1_INTR_MASK		0xC89
+#define SMART1_LISTADDR			0xC90
+#define SMART1_LISTLEN			0xC94
+#define SMART1_TAG			0xC97
+#define SMART1_COMPLETE_ADDR		0xC98
+#define SMART1_LISTSTATUS		0xC9E
+
+#define CHANNEL_BUSY			0x01
+#define CHANNEL_CLEAR			0x02
+
+static void smart1_submit_command(ctlr_info_t *h, cmdlist_t *c)
+{
+	/*
+	 * This __u16 is actually a bunch of control flags on SMART
+	 * and below.  We want them all to be zero.
+	 */
+	c->hdr.size = 0;
+
+	outb(CHANNEL_CLEAR, h->io_mem_addr + SMART1_SYSTEM_DOORBELL);
+
+	outl(c->busaddr, h->io_mem_addr + SMART1_LISTADDR);
+	outw(c->size, h->io_mem_addr + SMART1_LISTLEN);
+
+	outb(CHANNEL_BUSY, h->io_mem_addr + SMART1_LOCAL_DOORBELL);
+}
+
+static void smart1_intr_mask(ctlr_info_t *h, unsigned long val)
+{
+	if (val == 1) {
+		outb(0xFD, h->io_mem_addr + SMART1_SYSTEM_DOORBELL);
+		outb(CHANNEL_BUSY, h->io_mem_addr + SMART1_LOCAL_DOORBELL);
+		outb(0x01, h->io_mem_addr + SMART1_INTR_MASK);
+		outb(0x01, h->io_mem_addr + SMART1_SYSTEM_MASK);
+	} else {
+		outb(0, h->io_mem_addr + 0xC8E);
+	}
+}
+
+static unsigned long smart1_fifo_full(ctlr_info_t *h)
+{
+	unsigned char chan;
+	chan = inb(h->io_mem_addr + SMART1_SYSTEM_DOORBELL) & CHANNEL_CLEAR;
+	return chan;
+}
+
+static unsigned long smart1_completed(ctlr_info_t *h)
+{
+	unsigned char status;
+	unsigned long cmd;
+
+	if (inb(h->io_mem_addr + SMART1_SYSTEM_DOORBELL) & CHANNEL_BUSY) {
+		outb(CHANNEL_BUSY, h->io_mem_addr + SMART1_SYSTEM_DOORBELL);
+
+		cmd = inl(h->io_mem_addr + SMART1_COMPLETE_ADDR);
+		status = inb(h->io_mem_addr + SMART1_LISTSTATUS);
+
+		outb(CHANNEL_CLEAR, h->io_mem_addr + SMART1_LOCAL_DOORBELL);
+
+		/*
+		 * this is x86 (actually compaq x86) only, so it's ok
+		 */
+		if (cmd) ((cmdlist_t*)bus_to_virt(cmd))->req.hdr.rcode = status;
+	} else {
+		cmd = 0;
+	}
+	return cmd;
+}
+
+static unsigned long smart1_intr_pending(ctlr_info_t *h)
+{
+	unsigned char chan;
+	chan = inb(h->io_mem_addr + SMART1_SYSTEM_DOORBELL) & CHANNEL_BUSY;
+	return chan;
+}
+
+static struct access_method smart1_access = {
+	smart1_submit_command,
+	smart1_intr_mask,
+	smart1_fifo_full,
+	smart1_intr_pending,
+	smart1_completed,
+};