[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/drivers/mca/mca-bus.c b/ap/os/linux/linux-3.4.x/drivers/mca/mca-bus.c
new file mode 100644
index 0000000..ada5ebb
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/mca/mca-bus.c
@@ -0,0 +1,169 @@
+/* -*- mode: c; c-basic-offset: 8 -*- */
+
+/*
+ * MCA bus support functions for sysfs.
+ *
+ * (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/kernel.h>
+#include <linux/device.h>
+#include <linux/mca.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+
+/* Very few machines have more than one MCA bus. However, there are
+ * those that do (Voyager 35xx/5xxx), so we do it this way for future
+ * expansion. None that I know have more than 2 */
+static struct mca_bus *mca_root_busses[MAX_MCA_BUSSES];
+
+#define MCA_DEVINFO(i,s) { .pos = i, .name = s }
+
+struct mca_device_info {
+ short pos_id; /* the 2 byte pos id for this card */
+ char name[50];
+};
+
+static int mca_bus_match (struct device *dev, struct device_driver *drv)
+{
+ struct mca_device *mca_dev = to_mca_device (dev);
+ struct mca_driver *mca_drv = to_mca_driver (drv);
+ const unsigned short *mca_ids = mca_drv->id_table;
+ int i = 0;
+
+ if (mca_ids) {
+ for(i = 0; mca_ids[i]; i++) {
+ if (mca_ids[i] == mca_dev->pos_id) {
+ mca_dev->index = i;
+ return 1;
+ }
+ }
+ }
+ /* If the integrated id is present, treat it as though it were an
+ * additional id in the id_table (it can't be because by definition,
+ * integrated id's overflow a short */
+ if (mca_drv->integrated_id && mca_dev->pos_id ==
+ mca_drv->integrated_id) {
+ mca_dev->index = i;
+ return 1;
+ }
+ return 0;
+}
+
+struct bus_type mca_bus_type = {
+ .name = "MCA",
+ .match = mca_bus_match,
+};
+EXPORT_SYMBOL (mca_bus_type);
+
+static ssize_t mca_show_pos_id(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* four digits, \n and trailing \0 */
+ struct mca_device *mca_dev = to_mca_device(dev);
+ int len;
+
+ if(mca_dev->pos_id < MCA_DUMMY_POS_START)
+ len = sprintf(buf, "%04x\n", mca_dev->pos_id);
+ else
+ len = sprintf(buf, "none\n");
+ return len;
+}
+static ssize_t mca_show_pos(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ /* enough for 8 two byte hex chars plus space and new line */
+ int j, len=0;
+ struct mca_device *mca_dev = to_mca_device(dev);
+
+ for(j=0; j<8; j++)
+ len += sprintf(buf+len, "%02x ", mca_dev->pos[j]);
+ /* change last trailing space to new line */
+ buf[len-1] = '\n';
+ return len;
+}
+
+static DEVICE_ATTR(id, S_IRUGO, mca_show_pos_id, NULL);
+static DEVICE_ATTR(pos, S_IRUGO, mca_show_pos, NULL);
+
+int __init mca_register_device(int bus, struct mca_device *mca_dev)
+{
+ struct mca_bus *mca_bus = mca_root_busses[bus];
+ int rc;
+
+ mca_dev->dev.parent = &mca_bus->dev;
+ mca_dev->dev.bus = &mca_bus_type;
+ dev_set_name(&mca_dev->dev, "%02d:%02X", bus, mca_dev->slot);
+ mca_dev->dma_mask = mca_bus->default_dma_mask;
+ mca_dev->dev.dma_mask = &mca_dev->dma_mask;
+ mca_dev->dev.coherent_dma_mask = mca_dev->dma_mask;
+
+ rc = device_register(&mca_dev->dev);
+ if (rc)
+ goto err_out;
+
+ rc = device_create_file(&mca_dev->dev, &dev_attr_id);
+ if (rc) goto err_out_devreg;
+ rc = device_create_file(&mca_dev->dev, &dev_attr_pos);
+ if (rc) goto err_out_id;
+
+ return 1;
+
+err_out_id:
+ device_remove_file(&mca_dev->dev, &dev_attr_id);
+err_out_devreg:
+ device_unregister(&mca_dev->dev);
+err_out:
+ return 0;
+}
+
+/* */
+struct mca_bus * __devinit mca_attach_bus(int bus)
+{
+ struct mca_bus *mca_bus;
+
+ if (unlikely(mca_root_busses[bus] != NULL)) {
+ /* This should never happen, but just in case */
+ printk(KERN_EMERG "MCA tried to add already existing bus %d\n",
+ bus);
+ dump_stack();
+ return NULL;
+ }
+
+ mca_bus = kzalloc(sizeof(struct mca_bus), GFP_KERNEL);
+ if (!mca_bus)
+ return NULL;
+
+ dev_set_name(&mca_bus->dev, "mca%d", bus);
+ sprintf(mca_bus->name,"Host %s MCA Bridge", bus ? "Secondary" : "Primary");
+ if (device_register(&mca_bus->dev)) {
+ kfree(mca_bus);
+ return NULL;
+ }
+
+ mca_root_busses[bus] = mca_bus;
+
+ return mca_bus;
+}
+
+int __init mca_system_init (void)
+{
+ return bus_register(&mca_bus_type);
+}