1 files changed, 249 insertions, 0 deletions
diff --git a/drivers/mca/mca-proc.c b/drivers/mca/mca-proc.c
new file mode 100644
index 00000000000..33d5e0820cc
--- /dev/null
+++ b/drivers/mca/mca-proc.c
@@ -0,0 +1,249 @@
+/* -*- mode: c; c-basic-offset: 8 -*- */
+
+/*
+ * MCA bus support functions for the proc fs.
+ *
+ * NOTE: this code *requires* the legacy MCA api.
+ *
+ * Legacy API means the API that operates in terms of MCA slot number
+ *
+ * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
+ *
+**-----------------------------------------------------------------------------
+**  
+**  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**-----------------------------------------------------------------------------
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/mca.h>
+
+static int get_mca_info_helper(struct mca_device *mca_dev, char *page, int len)
+{
+	int j;
+
+	for(j=0; j<8; j++)
+		len += sprintf(page+len, "%02x ",
+			       mca_dev ? mca_dev->pos[j] : 0xff);
+	len += sprintf(page+len, " %s\n", mca_dev ? mca_dev->name : "");
+	return len;
+}
+
+static int get_mca_info(char *page, char **start, off_t off,
+			int count, int *eof, void *data)
+{
+	int i, len = 0;
+
+	if(MCA_bus) {
+		struct mca_device *mca_dev;
+		/* Format POS registers of eight MCA slots */
+
+		for(i=0; i<MCA_MAX_SLOT_NR; i++) {
+			mca_dev = mca_find_device_by_slot(i);
+
+			len += sprintf(page+len, "Slot %d: ", i+1);
+			len = get_mca_info_helper(mca_dev, page, len);
+		}
+
+		/* Format POS registers of integrated video subsystem */
+
+		mca_dev = mca_find_device_by_slot(MCA_INTEGVIDEO);
+		len += sprintf(page+len, "Video : ");
+		len = get_mca_info_helper(mca_dev, page, len);
+
+		/* Format POS registers of integrated SCSI subsystem */
+
+		mca_dev = mca_find_device_by_slot(MCA_INTEGSCSI);
+		len += sprintf(page+len, "SCSI  : ");
+		len = get_mca_info_helper(mca_dev, page, len);
+
+		/* Format POS registers of motherboard */
+
+		mca_dev = mca_find_device_by_slot(MCA_MOTHERBOARD);
+		len += sprintf(page+len, "Planar: ");
+		len = get_mca_info_helper(mca_dev, page, len);
+	} else {
+		/* Leave it empty if MCA not detected - this should *never*
+		 * happen!
+		 */
+	}
+
+	if (len <= off+count) *eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+	return len;
+}
+
+/*--------------------------------------------------------------------*/
+
+static int mca_default_procfn(char* buf, struct mca_device *mca_dev)
+{
+	int len = 0, i;
+	int slot = mca_dev->slot;
+
+	/* Print out the basic information */
+
+	if(slot < MCA_MAX_SLOT_NR) {
+		len += sprintf(buf+len, "Slot: %d\n", slot+1);
+	} else if(slot == MCA_INTEGSCSI) {
+		len += sprintf(buf+len, "Integrated SCSI Adapter\n");
+	} else if(slot == MCA_INTEGVIDEO) {
+		len += sprintf(buf+len, "Integrated Video Adapter\n");
+	} else if(slot == MCA_MOTHERBOARD) {
+		len += sprintf(buf+len, "Motherboard\n");
+	}
+	if (mca_dev->name[0]) {
+
+		/* Drivers might register a name without /proc handler... */
+
+		len += sprintf(buf+len, "Adapter Name: %s\n",
+			       mca_dev->name);
+	} else {
+		len += sprintf(buf+len, "Adapter Name: Unknown\n");
+	}
+	len += sprintf(buf+len, "Id: %02x%02x\n",
+		mca_dev->pos[1], mca_dev->pos[0]);
+	len += sprintf(buf+len, "Enabled: %s\nPOS: ",
+		mca_device_status(mca_dev) == MCA_ADAPTER_NORMAL ?
+			"Yes" : "No");
+	for(i=0; i<8; i++) {
+		len += sprintf(buf+len, "%02x ", mca_dev->pos[i]);
+	}
+	len += sprintf(buf+len, "\nDriver Installed: %s",
+		mca_device_claimed(mca_dev) ? "Yes" : "No");
+	buf[len++] = '\n';
+	buf[len] = 0;
+
+	return len;
+} /* mca_default_procfn() */
+
+static int get_mca_machine_info(char* page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	int len = 0;
+
+	len += sprintf(page+len, "Model Id: 0x%x\n", machine_id);
+	len += sprintf(page+len, "Submodel Id: 0x%x\n", machine_submodel_id);
+	len += sprintf(page+len, "BIOS Revision: 0x%x\n", BIOS_revision);
+
+	if (len <= off+count) *eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+	return len;
+}
+
+static int mca_read_proc(char *page, char **start, off_t off,
+				 int count, int *eof, void *data)
+{
+	struct mca_device *mca_dev = (struct mca_device *)data;
+	int len = 0;
+
+	/* Get the standard info */
+
+	len = mca_default_procfn(page, mca_dev);
+
+	/* Do any device-specific processing, if there is any */
+
+	if(mca_dev->procfn) {
+		len += mca_dev->procfn(page+len, mca_dev->slot,
+				       mca_dev->proc_dev);
+	}
+	if (len <= off+count) *eof = 1;
+	*start = page + off;
+	len -= off;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+	return len;
+} /* mca_read_proc() */
+
+/*--------------------------------------------------------------------*/
+
+void __init mca_do_proc_init(void)
+{
+	int i;
+	struct proc_dir_entry *proc_mca;
+	struct proc_dir_entry* node = NULL;
+	struct mca_device *mca_dev;
+
+	proc_mca = proc_mkdir("mca", &proc_root);
+	create_proc_read_entry("pos",0,proc_mca,get_mca_info,NULL);
+	create_proc_read_entry("machine",0,proc_mca,get_mca_machine_info,NULL);
+
+	/* Initialize /proc/mca entries for existing adapters */
+
+	for(i = 0; i < MCA_NUMADAPTERS; i++) {
+		enum MCA_AdapterStatus status;
+		mca_dev = mca_find_device_by_slot(i);
+		if(!mca_dev)
+			continue;
+
+		mca_dev->procfn = NULL;
+
+		if(i < MCA_MAX_SLOT_NR) sprintf(mca_dev->procname,"slot%d", i+1);
+		else if(i == MCA_INTEGVIDEO) sprintf(mca_dev->procname,"video");
+		else if(i == MCA_INTEGSCSI) sprintf(mca_dev->procname,"scsi");
+		else if(i == MCA_MOTHERBOARD) sprintf(mca_dev->procname,"planar");
+
+		status = mca_device_status(mca_dev);
+		if (status != MCA_ADAPTER_NORMAL &&
+		    status != MCA_ADAPTER_DISABLED)
+			continue;
+
+		node = create_proc_read_entry(mca_dev->procname, 0, proc_mca,
+					      mca_read_proc, (void *)mca_dev);
+
+		if(node == NULL) {
+			printk("Failed to allocate memory for MCA proc-entries!");
+			return;
+		}
+	}
+
+} /* mca_do_proc_init() */
+
+/**
+ *	mca_set_adapter_procfn - Set the /proc callback
+ *	@slot: slot to configure
+ *	@procfn: callback function to call for /proc
+ *	@dev: device information passed to the callback
+ *
+ *	This sets up an information callback for /proc/mca/slot?.  The
+ *	function is called with the buffer, slot, and device pointer (or
+ *	some equally informative context information, or nothing, if you
+ *	prefer), and is expected to put useful information into the
+ *	buffer.  The adapter name, ID, and POS registers get printed
+ *	before this is called though, so don't do it again.
+ *
+ *	This should be called with a %NULL @procfn when a module
+ *	unregisters, thus preventing kernel crashes and other such
+ *	nastiness.
+ */
+
+void mca_set_adapter_procfn(int slot, MCA_ProcFn procfn, void* proc_dev)
+{
+	struct mca_device *mca_dev = mca_find_device_by_slot(slot);
+
+	if(!mca_dev)
+		return;
+
+	mca_dev->procfn = procfn;
+	mca_dev->proc_dev = proc_dev;
+}
+EXPORT_SYMBOL(mca_set_adapter_procfn);