zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/remoteproc/omap_remoteproc.c b/ap/os/linux/linux-3.4.x/drivers/remoteproc/omap_remoteproc.c
new file mode 100644
index 0000000..de138e3
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/remoteproc/omap_remoteproc.c
@@ -0,0 +1,229 @@
+/*
+ * OMAP Remote Processor driver
+ *
+ * Copyright (C) 2011 Texas Instruments, Inc.
+ * Copyright (C) 2011 Google, Inc.
+ *
+ * Ohad Ben-Cohen <ohad@wizery.com>
+ * Brian Swetland <swetland@google.com>
+ * Fernando Guzman Lugo <fernando.lugo@ti.com>
+ * Mark Grosen <mgrosen@ti.com>
+ * Suman Anna <s-anna@ti.com>
+ * Hari Kanigeri <h-kanigeri2@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/remoteproc.h>
+
+#include <plat/mailbox.h>
+#include <plat/remoteproc.h>
+
+#include "omap_remoteproc.h"
+#include "remoteproc_internal.h"
+
+/**
+ * struct omap_rproc - omap remote processor state
+ * @mbox: omap mailbox handle
+ * @nb: notifier block that will be invoked on inbound mailbox messages
+ * @rproc: rproc handle
+ */
+struct omap_rproc {
+ struct omap_mbox *mbox;
+ struct notifier_block nb;
+ struct rproc *rproc;
+};
+
+/**
+ * omap_rproc_mbox_callback() - inbound mailbox message handler
+ * @this: notifier block
+ * @index: unused
+ * @data: mailbox payload
+ *
+ * This handler is invoked by omap's mailbox driver whenever a mailbox
+ * message is received. Usually, the mailbox payload simply contains
+ * the index of the virtqueue that is kicked by the remote processor,
+ * and we let remoteproc core handle it.
+ *
+ * In addition to virtqueue indices, we also have some out-of-band values
+ * that indicates different events. Those values are deliberately very
+ * big so they don't coincide with virtqueue indices.
+ */
+static int omap_rproc_mbox_callback(struct notifier_block *this,
+ unsigned long index, void *data)
+{
+ mbox_msg_t msg = (mbox_msg_t) data;
+ struct omap_rproc *oproc = container_of(this, struct omap_rproc, nb);
+ struct device *dev = oproc->rproc->dev;
+ const char *name = oproc->rproc->name;
+
+ dev_dbg(dev, "mbox msg: 0x%x\n", msg);
+
+ switch (msg) {
+ case RP_MBOX_CRASH:
+ /* just log this for now. later, we'll also do recovery */
+ dev_err(dev, "omap rproc %s crashed\n", name);
+ break;
+ case RP_MBOX_ECHO_REPLY:
+ dev_info(dev, "received echo reply from %s\n", name);
+ break;
+ default:
+ /* msg contains the index of the triggered vring */
+ if (rproc_vq_interrupt(oproc->rproc, msg) == IRQ_NONE)
+ dev_dbg(dev, "no message was found in vqid %d\n", msg);
+ }
+
+ return NOTIFY_DONE;
+}
+
+/* kick a virtqueue */
+static void omap_rproc_kick(struct rproc *rproc, int vqid)
+{
+ struct omap_rproc *oproc = rproc->priv;
+ int ret;
+
+ /* send the index of the triggered virtqueue in the mailbox payload */
+ ret = omap_mbox_msg_send(oproc->mbox, vqid);
+ if (ret)
+ dev_err(rproc->dev, "omap_mbox_msg_send failed: %d\n", ret);
+}
+
+/*
+ * Power up the remote processor.
+ *
+ * This function will be invoked only after the firmware for this rproc
+ * was loaded, parsed successfully, and all of its resource requirements
+ * were met.
+ */
+static int omap_rproc_start(struct rproc *rproc)
+{
+ struct omap_rproc *oproc = rproc->priv;
+ struct platform_device *pdev = to_platform_device(rproc->dev);
+ struct omap_rproc_pdata *pdata = pdev->dev.platform_data;
+ int ret;
+
+ oproc->nb.notifier_call = omap_rproc_mbox_callback;
+
+ /* every omap rproc is assigned a mailbox instance for messaging */
+ oproc->mbox = omap_mbox_get(pdata->mbox_name, &oproc->nb);
+ if (IS_ERR(oproc->mbox)) {
+ ret = PTR_ERR(oproc->mbox);
+ dev_err(rproc->dev, "omap_mbox_get failed: %d\n", ret);
+ return ret;
+ }
+
+ /*
+ * Ping the remote processor. this is only for sanity-sake;
+ * there is no functional effect whatsoever.
+ *
+ * Note that the reply will _not_ arrive immediately: this message
+ * will wait in the mailbox fifo until the remote processor is booted.
+ */
+ ret = omap_mbox_msg_send(oproc->mbox, RP_MBOX_ECHO_REQUEST);
+ if (ret) {
+ dev_err(rproc->dev, "omap_mbox_get failed: %d\n", ret);
+ goto put_mbox;
+ }
+
+ ret = pdata->device_enable(pdev);
+ if (ret) {
+ dev_err(rproc->dev, "omap_device_enable failed: %d\n", ret);
+ goto put_mbox;
+ }
+
+ return 0;
+
+put_mbox:
+ omap_mbox_put(oproc->mbox, &oproc->nb);
+ return ret;
+}
+
+/* power off the remote processor */
+static int omap_rproc_stop(struct rproc *rproc)
+{
+ struct platform_device *pdev = to_platform_device(rproc->dev);
+ struct omap_rproc_pdata *pdata = pdev->dev.platform_data;
+ struct omap_rproc *oproc = rproc->priv;
+ int ret;
+
+ ret = pdata->device_shutdown(pdev);
+ if (ret)
+ return ret;
+
+ omap_mbox_put(oproc->mbox, &oproc->nb);
+
+ return 0;
+}
+
+static struct rproc_ops omap_rproc_ops = {
+ .start = omap_rproc_start,
+ .stop = omap_rproc_stop,
+ .kick = omap_rproc_kick,
+};
+
+static int __devinit omap_rproc_probe(struct platform_device *pdev)
+{
+ struct omap_rproc_pdata *pdata = pdev->dev.platform_data;
+ struct omap_rproc *oproc;
+ struct rproc *rproc;
+ int ret;
+
+ ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+ if (ret) {
+ dev_err(&pdev->dev, "dma_set_coherent_mask: %d\n", ret);
+ return ret;
+ }
+
+ rproc = rproc_alloc(&pdev->dev, pdata->name, &omap_rproc_ops,
+ pdata->firmware, sizeof(*oproc));
+ if (!rproc)
+ return -ENOMEM;
+
+ oproc = rproc->priv;
+ oproc->rproc = rproc;
+
+ platform_set_drvdata(pdev, rproc);
+
+ ret = rproc_register(rproc);
+ if (ret)
+ goto free_rproc;
+
+ return 0;
+
+free_rproc:
+ rproc_free(rproc);
+ return ret;
+}
+
+static int __devexit omap_rproc_remove(struct platform_device *pdev)
+{
+ struct rproc *rproc = platform_get_drvdata(pdev);
+
+ return rproc_unregister(rproc);
+}
+
+static struct platform_driver omap_rproc_driver = {
+ .probe = omap_rproc_probe,
+ .remove = __devexit_p(omap_rproc_remove),
+ .driver = {
+ .name = "omap-rproc",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(omap_rproc_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("OMAP Remote Processor control driver");