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@@ -0,0 +1,785 @@
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+// SPDX-License-Identifier: GPL-2.0
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+/*
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+ * TI K3 DSP Remote Processor(s) driver
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+ *
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+ * Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
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+ * Suman Anna <s-anna@ti.com>
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+ */
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+
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+#include <linux/module.h>
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+#include <linux/of_device.h>
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+#include <linux/of_reserved_mem.h>
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+#include <linux/platform_device.h>
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+#include <linux/pm_runtime.h>
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+#include <linux/remoteproc.h>
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+#include <linux/mailbox_client.h>
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+#include <linux/omap-mailbox.h>
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+#include <linux/reset.h>
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+#include <linux/soc/ti/ti_sci_protocol.h>
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+
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+#include "omap_remoteproc.h"
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+#include "remoteproc_internal.h"
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+#include "ti_sci_proc.h"
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+
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+#define KEYSTONE_RPROC_LOCAL_ADDRESS_MASK (SZ_16M - 1)
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+
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+/**
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+ * struct k3_dsp_rproc_mem - internal memory structure
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+ * @cpu_addr: MPU virtual address of the memory region
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+ * @bus_addr: Bus address used to access the memory region
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+ * @dev_addr: Device address of the memory region from DSP view
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+ * @size: Size of the memory region
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+ */
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+struct k3_dsp_rproc_mem {
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+ void __iomem *cpu_addr;
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+ phys_addr_t bus_addr;
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+ u32 dev_addr;
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+ size_t size;
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+};
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+
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+/**
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+ * struct k3_dsp_rproc - k3 DSP remote processor driver structure
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+ * @dev: cached device pointer
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+ * @rproc: remoteproc device handle
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+ * @mem: internal memory regions data
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+ * @num_mems: number of internal memory regions
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+ * @rmem: reserved memory regions data
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+ * @num_rmems: number of reserved memory regions
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+ * @reset: reset control handle
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+ * @tsp: TI-SCI processor control handle
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+ * @ti_sci: TI-SCI handle
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+ * @ti_sci_id: TI-SCI device identifier
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+ * @mbox: mailbox channel handle
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+ * @client: mailbox client to request the mailbox channel
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+ * @ipc_only: flag to indicate IPC-only mode
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+ */
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+struct k3_dsp_rproc {
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+ struct device *dev;
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+ struct rproc *rproc;
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+ struct k3_dsp_rproc_mem *mem;
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+ int num_mems;
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+ struct k3_dsp_rproc_mem *rmem;
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+ int num_rmems;
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+ struct reset_control *reset;
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+ struct ti_sci_proc *tsp;
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+ const struct ti_sci_handle *ti_sci;
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+ u32 ti_sci_id;
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+ struct mbox_chan *mbox;
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+ struct mbox_client client;
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+ unsigned int ipc_only : 1;
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+};
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+
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+/**
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+ * struct k3_dsp_rproc_dev_data - device data for the remote processor
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+ * @device_name: device name of the remote processor
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+ * @fw_name: firmware name to use
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+ */
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+struct k3_dsp_rproc_dev_data {
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+ const char *device_name;
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+ const char *fw_name;
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+};
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+
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+/**
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+ * k3_dsp_rproc_mbox_callback() - inbound mailbox message handler
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+ * @client: mailbox client pointer used for requesting the mailbox channel
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+ * @data: mailbox payload
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+ *
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+ * This handler is invoked by the OMAP mailbox driver whenever a mailbox
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+ * message is received. Usually, the mailbox payload simply contains
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+ * the index of the virtqueue that is kicked by the remote processor,
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+ * and we let remoteproc core handle it.
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+ *
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+ * In addition to virtqueue indices, we also have some out-of-band values
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+ * that indicate different events. Those values are deliberately very
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+ * large so they don't coincide with virtqueue indices.
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+ */
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+static void k3_dsp_rproc_mbox_callback(struct mbox_client *client, void *data)
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+{
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+ struct k3_dsp_rproc *kproc = container_of(client, struct k3_dsp_rproc,
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+ client);
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+ struct device *dev = kproc->rproc->dev.parent;
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+ const char *name = kproc->rproc->name;
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+ u32 msg = to_omap_mbox_msg(data);
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+
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+ dev_dbg(dev, "mbox msg: 0x%x\n", msg);
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+
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+ switch (msg) {
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+ case RP_MBOX_CRASH:
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+ /*
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+ * remoteproc detected an exception, but error recovery is not
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+ * supported. So, just log this for now
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+ */
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+ dev_err(dev, "K3 DSP rproc %s crashed\n", name);
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+ break;
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+ case RP_MBOX_ECHO_REPLY:
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+ dev_info(dev, "received echo reply from %s\n", name);
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+ break;
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+ default:
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+ /* silently handle all other valid messages */
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+ if (msg >= RP_MBOX_READY && msg < RP_MBOX_END_MSG)
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+ return;
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+ if (msg > kproc->rproc->max_notifyid) {
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+ dev_dbg(dev, "dropping unknown message 0x%x", msg);
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+ return;
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+ }
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+ /* msg contains the index of the triggered vring */
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+ if (rproc_vq_interrupt(kproc->rproc, msg) == IRQ_NONE)
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+ dev_dbg(dev, "no message was found in vqid %d\n", msg);
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+ }
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+}
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+
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+/*
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+ * Kick the remote processor to notify about pending unprocessed messages.
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+ * The vqid usage is not used and is inconsequential, as the kick is performed
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+ * through a simulated GPIO (a bit in an IPC interrupt-triggering register),
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+ * the remote processor is expected to process both its Tx and Rx virtqueues.
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+ */
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+static void k3_dsp_rproc_kick(struct rproc *rproc, int vqid)
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+{
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+ struct k3_dsp_rproc *kproc = rproc->priv;
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+ struct device *dev = rproc->dev.parent;
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+ mbox_msg_t msg = (mbox_msg_t)vqid;
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+ int ret;
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+
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+ /* send the index of the triggered virtqueue in the mailbox payload */
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+ ret = mbox_send_message(kproc->mbox, (void *)msg);
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+ if (ret < 0)
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+ dev_err(dev, "failed to send mailbox message, status = %d\n",
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+ ret);
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+}
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+
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+/* Put the DSP processor into reset */
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+static int k3_dsp_rproc_reset(struct k3_dsp_rproc *kproc)
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+{
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+ struct device *dev = kproc->dev;
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+ int ret;
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+
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+#ifdef LOCAL_RESET
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+ ret = reset_control_assert(kproc->reset);
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+ if (ret) {
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+ dev_err(dev, "local-reset assert failed, ret = %d\n", ret);
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+ return ret;
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+ }
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+#endif
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+
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+ ret = kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,
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+ kproc->ti_sci_id);
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+ if (ret) {
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+ dev_err(dev, "module-reset assert failed, ret = %d\n", ret);
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+#ifdef LOCAL_RESET
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+ if (reset_control_deassert(kproc->reset))
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+ dev_warn(dev, "local-reset deassert back failed\n");
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+#endif
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+ }
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+
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+ return ret;
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+}
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+
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+/* Release the DSP processor from reset */
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+static int k3_dsp_rproc_release(struct k3_dsp_rproc *kproc)
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+{
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+ struct device *dev = kproc->dev;
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+ int ret;
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+
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+ ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci,
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+ kproc->ti_sci_id);
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+ if (ret) {
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+ dev_err(dev, "module-reset deassert failed, ret = %d\n", ret);
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+ return ret;
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+ }
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+
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+#ifdef LOCAL_RESET
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+ ret = reset_control_deassert(kproc->reset);
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+ if (ret) {
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+ dev_err(dev, "local-reset deassert failed, ret = %d\n", ret);
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+ if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,
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+ kproc->ti_sci_id))
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+ dev_warn(dev, "module-reset assert back failed\n");
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+ }
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+#endif
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+
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+ return ret;
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+}
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+
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+/*
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+ * Power up the DSP remote processor.
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+ *
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+ * This function will be invoked only after the firmware for this rproc
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+ * was loaded, parsed successfully, and all of its resource requirements
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+ * were met.
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+ */
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+static int k3_dsp_rproc_start(struct rproc *rproc)
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+{
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+ struct k3_dsp_rproc *kproc = rproc->priv;
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+ struct mbox_client *client = &kproc->client;
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+ struct device *dev = kproc->dev;
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+ u32 boot_addr;
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+ int ret;
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+
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+ client->dev = dev;
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+ client->tx_done = NULL;
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+ client->rx_callback = k3_dsp_rproc_mbox_callback;
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+ client->tx_block = false;
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+ client->knows_txdone = false;
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+
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+ kproc->mbox = mbox_request_channel(client, 0);
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+ if (IS_ERR(kproc->mbox)) {
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+ ret = -EBUSY;
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+ dev_err(dev, "mbox_request_channel failed: %ld\n",
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+ PTR_ERR(kproc->mbox));
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+ return ret;
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+ }
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+
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+ /*
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+ * Ping the remote processor, this is only for sanity-sake for now;
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+ * there is no functional effect whatsoever.
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+ *
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+ * Note that the reply will _not_ arrive immediately: this message
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+ * will wait in the mailbox fifo until the remote processor is booted.
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+ */
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+ ret = mbox_send_message(kproc->mbox, (void *)RP_MBOX_ECHO_REQUEST);
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+ if (ret < 0) {
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+ dev_err(dev, "mbox_send_message failed: %d\n", ret);
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+ goto put_mbox;
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+ }
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+
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+ /*
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+ * no need to issue TI-SCI commands to configure and boot the DSP cores
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+ * in IPC-only mode.
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+ */
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+ if (kproc->ipc_only) {
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+ dev_err(dev, "DSP initialized in IPC-only mode\n");
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+ return 0;
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+ }
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+
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+ boot_addr = rproc->bootaddr;
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+ if (boot_addr & (SZ_1K - 1)) {
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+ dev_err(dev, "invalid boot address 0x%x, must be aligned on a 1KB boundary\n",
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+ boot_addr);
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+ ret = -EINVAL;
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+ goto put_mbox;
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+ }
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+
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+ dev_err(dev, "booting DSP core using boot addr = 0x%x\n", boot_addr);
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+ ret = ti_sci_proc_set_config(kproc->tsp, boot_addr, 0, 0);
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+ if (ret)
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+ goto put_mbox;
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+
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+ ret = k3_dsp_rproc_release(kproc);
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+ if (ret)
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+ goto put_mbox;
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+
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+ return 0;
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+
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+put_mbox:
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+ mbox_free_channel(kproc->mbox);
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+ return ret;
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+}
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+
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+/*
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+ * Stop the DSP remote processor.
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+ *
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+ * This function puts the DSP processor into reset, and finishes processing
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+ * of any pending messages.
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+ */
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+static int k3_dsp_rproc_stop(struct rproc *rproc)
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+{
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+ struct k3_dsp_rproc *kproc = rproc->priv;
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+
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+ mbox_free_channel(kproc->mbox);
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+
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+ /*
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+ * no need to issue TI-SCI commands to stop the DSP core
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+ * in IPC-only mode.
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+ */
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+ if (kproc->ipc_only) {
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+ dev_err(kproc->dev, "DSP deinitialized in IPC-only mode\n");
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+ return 0;
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+ }
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+
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+ k3_dsp_rproc_reset(kproc);
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+
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+ return 0;
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+}
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+
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+/*
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+ * Custom function to translate a DSP device address (internal RAMs only) to a
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+ * kernel virtual address. The DSPs can access their RAMs at either an internal
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+ * address visible only from a DSP, or at the SoC-level bus address. Both these
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+ * addresses need to be looked through for translation. The translated addresses
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+ * can be used either by the remoteproc core for loading (when using kernel
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+ * remoteproc loader), or by any rpmsg bus drivers.
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+ */
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+static void *k3_dsp_rproc_da_to_va(struct rproc *rproc, u64 da, int len,
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+ u32 flags)
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+{
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+ struct k3_dsp_rproc *kproc = rproc->priv;
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+ void __iomem *va = NULL;
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+ phys_addr_t bus_addr;
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+ u32 dev_addr, offset;
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+ size_t size;
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+ int i;
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+
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+ if (len <= 0)
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+ return NULL;
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+
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+ for (i = 0; i < kproc->num_mems; i++) {
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+ bus_addr = kproc->mem[i].bus_addr;
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+ dev_addr = kproc->mem[i].dev_addr;
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+ size = kproc->mem[i].size;
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+
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+ if (da < KEYSTONE_RPROC_LOCAL_ADDRESS_MASK) {
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+ /* handle DSP-view addresses */
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+ if (da >= dev_addr &&
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+ ((da + len) <= (dev_addr + size))) {
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+ offset = da - dev_addr;
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+ va = kproc->mem[i].cpu_addr + offset;
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+ return (__force void *)va;
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+ }
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+ } else {
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+ /* handle SoC-view addresses */
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+ if (da >= bus_addr &&
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+ (da + len) <= (bus_addr + size)) {
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+ offset = da - bus_addr;
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+ va = kproc->mem[i].cpu_addr + offset;
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+ return (__force void *)va;
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+ }
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+ }
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+ }
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+
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+ /* handle static DDR reserved memory regions */
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+ for (i = 0; i < kproc->num_rmems; i++) {
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+ dev_addr = kproc->rmem[i].dev_addr;
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+ size = kproc->rmem[i].size;
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+
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+ if (da >= dev_addr && ((da + len) <= (dev_addr + size))) {
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+ offset = da - dev_addr;
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+ va = kproc->rmem[i].cpu_addr + offset;
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+ return (__force void *)va;
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+ }
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+ }
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+
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+ return NULL;
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+}
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+
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+static const struct rproc_ops k3_dsp_rproc_ops = {
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+ .start = k3_dsp_rproc_start,
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+ .stop = k3_dsp_rproc_stop,
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+ .kick = k3_dsp_rproc_kick,
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+ .da_to_va = k3_dsp_rproc_da_to_va,
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+};
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+
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+static const char *k3_dsp_rproc_get_firmware(struct device *dev)
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+{
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+ const struct k3_dsp_rproc_dev_data *data =
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+ of_device_get_match_data(dev);
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+
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+ if (!data) {
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+ dev_err(dev, "data is NULL, %s\n", dev_name(dev));
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+ return ERR_PTR(-ENODEV);
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+ }
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+
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+ for (; data && data->device_name; data++) {
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+ if (!strcmp(dev_name(dev), data->device_name))
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+ return data->fw_name;
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+ }
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+
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+ dev_err(dev, "No matching DSP device found, %s\n", dev_name(dev));
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+ return ERR_PTR(-ENODEV);
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+}
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+
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+static int k3_dsp_rproc_of_get_memories(struct platform_device *pdev,
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+ struct k3_dsp_rproc *kproc)
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+{
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+ static const char * const mem_names[] = {"l2sram", "l1pram", "l1dram"};
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|
|
+ struct device *dev = &pdev->dev;
|
|
|
+ struct device_node *np = dev->of_node;
|
|
|
+ struct resource *res;
|
|
|
+ int num_mems = 0;
|
|
|
+ int i;
|
|
|
+
|
|
|
+ num_mems = ARRAY_SIZE(mem_names);
|
|
|
+ kproc->mem = devm_kcalloc(kproc->dev, num_mems,
|
|
|
+ sizeof(*kproc->mem), GFP_KERNEL);
|
|
|
+ if (!kproc->mem)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ for (i = 0; i < num_mems; i++) {
|
|
|
+ /* C71x cores only have a L1P Cache, there are no L1P SRAMs */
|
|
|
+ if (of_device_is_compatible(np, "ti,j721e-c71-dsp") &&
|
|
|
+ !strcmp(mem_names[i], "l1pram"))
|
|
|
+ continue;
|
|
|
+
|
|
|
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
|
|
|
+ mem_names[i]);
|
|
|
+ kproc->mem[i].cpu_addr = devm_ioremap_resource(dev, res);
|
|
|
+ if (IS_ERR(kproc->mem[i].cpu_addr)) {
|
|
|
+ dev_err(dev, "failed to parse and map %s memory\n",
|
|
|
+ mem_names[i]);
|
|
|
+ return PTR_ERR(kproc->mem[i].cpu_addr);
|
|
|
+ }
|
|
|
+ kproc->mem[i].bus_addr = res->start;
|
|
|
+ kproc->mem[i].dev_addr =
|
|
|
+ res->start & KEYSTONE_RPROC_LOCAL_ADDRESS_MASK;
|
|
|
+ kproc->mem[i].size = resource_size(res);
|
|
|
+
|
|
|
+ dev_dbg(dev, "memory %8s: bus addr %pa size 0x%zx va %pK da 0x%x\n",
|
|
|
+ mem_names[i], &kproc->mem[i].bus_addr,
|
|
|
+ kproc->mem[i].size, kproc->mem[i].cpu_addr,
|
|
|
+ kproc->mem[i].dev_addr);
|
|
|
+
|
|
|
+ /* zero out memories to start in a pristine state */
|
|
|
+ /*
|
|
|
+ * FIXME: comment out until kernel crash is fixed, possible
|
|
|
+ * issue with local resets.
|
|
|
+ * memset((__force void *)kproc->mem[i].cpu_addr, 0,
|
|
|
+ * kproc->mem[i].size);
|
|
|
+ */
|
|
|
+ }
|
|
|
+ kproc->num_mems = num_mems;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int k3_dsp_reserved_mem_init(struct k3_dsp_rproc *kproc)
|
|
|
+{
|
|
|
+ struct device *dev = kproc->dev;
|
|
|
+ struct device_node *np = dev->of_node;
|
|
|
+ struct device_node *rmem_np;
|
|
|
+ struct reserved_mem *rmem;
|
|
|
+ int num_rmems;
|
|
|
+ int ret, i;
|
|
|
+
|
|
|
+ num_rmems = of_property_count_elems_of_size(np, "memory-region",
|
|
|
+ sizeof(phandle));
|
|
|
+ if (num_rmems <= 0) {
|
|
|
+ dev_err(dev, "device does not reserved memory regions, ret = %d\n",
|
|
|
+ num_rmems);
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+ if (num_rmems < 2) {
|
|
|
+ dev_err(dev, "device needs atleast two memory regions to be defined, num = %d\n",
|
|
|
+ num_rmems);
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* use reserved memory region 0 for vring DMA allocations */
|
|
|
+ ret = of_reserved_mem_device_init_by_idx(dev, np, 0);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(dev, "device cannot initialize DMA pool, ret = %d\n",
|
|
|
+ ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ num_rmems--;
|
|
|
+ kproc->rmem = kcalloc(num_rmems, sizeof(*kproc->rmem), GFP_KERNEL);
|
|
|
+ if (!kproc->rmem) {
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto release_rmem;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* use remaining reserved memory regions for static carveouts */
|
|
|
+ for (i = 0; i < num_rmems; i++) {
|
|
|
+ rmem_np = of_parse_phandle(np, "memory-region", i + 1);
|
|
|
+ if (!rmem_np) {
|
|
|
+ ret = -EINVAL;
|
|
|
+ goto unmap_rmem;
|
|
|
+ }
|
|
|
+
|
|
|
+ rmem = of_reserved_mem_lookup(rmem_np);
|
|
|
+ if (!rmem) {
|
|
|
+ of_node_put(rmem_np);
|
|
|
+ ret = -EINVAL;
|
|
|
+ goto unmap_rmem;
|
|
|
+ }
|
|
|
+ of_node_put(rmem_np);
|
|
|
+
|
|
|
+ kproc->rmem[i].bus_addr = rmem->base;
|
|
|
+ /* 64-bit address regions currently not supported */
|
|
|
+ kproc->rmem[i].dev_addr = (u32)rmem->base;
|
|
|
+ kproc->rmem[i].size = rmem->size;
|
|
|
+ kproc->rmem[i].cpu_addr = ioremap_wc(rmem->base, rmem->size);
|
|
|
+ if (!kproc->rmem[i].cpu_addr) {
|
|
|
+ dev_err(dev, "failed to map reserved memory#%d at %pa of size %pa\n",
|
|
|
+ i + 1, &rmem->base, &rmem->size);
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto unmap_rmem;
|
|
|
+ }
|
|
|
+
|
|
|
+ dev_dbg(dev, "reserved memory%d: bus addr %pa size 0x%zx va %pK da 0x%x\n",
|
|
|
+ i + 1, &kproc->rmem[i].bus_addr,
|
|
|
+ kproc->rmem[i].size, kproc->rmem[i].cpu_addr,
|
|
|
+ kproc->rmem[i].dev_addr);
|
|
|
+ }
|
|
|
+ kproc->num_rmems = num_rmems;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+unmap_rmem:
|
|
|
+ for (i--; i >= 0; i--) {
|
|
|
+ if (kproc->rmem[i].cpu_addr)
|
|
|
+ iounmap(kproc->rmem[i].cpu_addr);
|
|
|
+ }
|
|
|
+ kfree(kproc->rmem);
|
|
|
+release_rmem:
|
|
|
+ of_reserved_mem_device_release(kproc->dev);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static void k3_dsp_reserved_mem_exit(struct k3_dsp_rproc *kproc)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+
|
|
|
+ for (i = 0; i < kproc->num_rmems; i++)
|
|
|
+ iounmap(kproc->rmem[i].cpu_addr);
|
|
|
+ kfree(kproc->rmem);
|
|
|
+
|
|
|
+ of_reserved_mem_device_release(kproc->dev);
|
|
|
+}
|
|
|
+
|
|
|
+static
|
|
|
+struct ti_sci_proc *k3_dsp_rproc_of_get_tsp(struct device *dev,
|
|
|
+ const struct ti_sci_handle *sci)
|
|
|
+{
|
|
|
+ struct ti_sci_proc *tsp;
|
|
|
+ u32 temp[2];
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = of_property_read_u32_array(dev->of_node, "ti,sci-proc-ids",
|
|
|
+ temp, 2);
|
|
|
+ if (ret < 0)
|
|
|
+ return ERR_PTR(ret);
|
|
|
+
|
|
|
+ tsp = kzalloc(sizeof(*tsp), GFP_KERNEL);
|
|
|
+ if (!tsp)
|
|
|
+ return ERR_PTR(-ENOMEM);
|
|
|
+
|
|
|
+ tsp->dev = dev;
|
|
|
+ tsp->sci = sci;
|
|
|
+ tsp->ops = &sci->ops.proc_ops;
|
|
|
+ tsp->proc_id = temp[0];
|
|
|
+ tsp->host_id = temp[1];
|
|
|
+
|
|
|
+ return tsp;
|
|
|
+}
|
|
|
+
|
|
|
+static int k3_dsp_rproc_probe(struct platform_device *pdev)
|
|
|
+{
|
|
|
+ struct device *dev = &pdev->dev;
|
|
|
+ struct device_node *np = dev->of_node;
|
|
|
+ struct k3_dsp_rproc *kproc;
|
|
|
+ struct rproc *rproc;
|
|
|
+ const char *fw_name;
|
|
|
+ bool r_state = false;
|
|
|
+ bool p_state = false;
|
|
|
+ int ret = 0;
|
|
|
+ int ret1;
|
|
|
+
|
|
|
+ fw_name = k3_dsp_rproc_get_firmware(dev);
|
|
|
+ if (IS_ERR(fw_name))
|
|
|
+ return PTR_ERR(fw_name);
|
|
|
+
|
|
|
+ rproc = rproc_alloc(dev, dev_name(dev), &k3_dsp_rproc_ops, fw_name,
|
|
|
+ sizeof(*kproc));
|
|
|
+ if (!rproc)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ rproc->has_iommu = false;
|
|
|
+ rproc->recovery_disabled = true;
|
|
|
+ kproc = rproc->priv;
|
|
|
+ kproc->rproc = rproc;
|
|
|
+ kproc->dev = dev;
|
|
|
+
|
|
|
+ /* C71x is a 64-bit processor, so customize rproc elf loader ops */
|
|
|
+ if (of_device_is_compatible(np, "ti,j721e-c71-dsp")) {
|
|
|
+ rproc->ops->load = rproc_elf64_load_segments;
|
|
|
+ rproc->ops->sanity_check = rproc_elf64_sanity_check;
|
|
|
+ rproc->ops->parse_fw = rproc_elf64_load_rsc_table;
|
|
|
+ rproc->ops->find_loaded_rsc_table =
|
|
|
+ rproc_elf64_find_loaded_rsc_table;
|
|
|
+ rproc->ops->get_boot_addr = rproc_elf64_get_boot_addr;
|
|
|
+ rproc->ops->load = rproc_elf64_load_segments;
|
|
|
+ }
|
|
|
+
|
|
|
+ kproc->ti_sci = ti_sci_get_by_phandle(np, "ti,sci");
|
|
|
+ if (IS_ERR(kproc->ti_sci)) {
|
|
|
+ ret = PTR_ERR(kproc->ti_sci);
|
|
|
+ if (ret != -EPROBE_DEFER) {
|
|
|
+ dev_err(dev, "failed to get ti-sci handle, ret = %d\n",
|
|
|
+ ret);
|
|
|
+ }
|
|
|
+ kproc->ti_sci = NULL;
|
|
|
+ goto free_rproc;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = of_property_read_u32(np, "ti,sci-dev-id", &kproc->ti_sci_id);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(dev, "missing 'ti,sci-dev-id' property\n");
|
|
|
+ goto put_sci;
|
|
|
+ }
|
|
|
+
|
|
|
+ kproc->reset = devm_reset_control_get_exclusive(dev, NULL);
|
|
|
+ if (IS_ERR(kproc->reset)) {
|
|
|
+ ret = PTR_ERR(kproc->reset);
|
|
|
+ dev_err(dev, "failed to get reset, status = %d\n", ret);
|
|
|
+ goto put_sci;
|
|
|
+ }
|
|
|
+
|
|
|
+ kproc->tsp = k3_dsp_rproc_of_get_tsp(dev, kproc->ti_sci);
|
|
|
+ if (IS_ERR(kproc->tsp)) {
|
|
|
+ dev_err(dev, "failed to construct ti-sci proc control, ret = %d\n",
|
|
|
+ ret);
|
|
|
+ ret = PTR_ERR(kproc->tsp);
|
|
|
+ goto put_sci;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = ti_sci_proc_request(kproc->tsp);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(dev, "ti_sci_proc_request failed, ret = %d\n", ret);
|
|
|
+ goto free_tsp;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* enable clock for accessing DSP internal memories */
|
|
|
+ pm_runtime_enable(dev);
|
|
|
+ ret = pm_runtime_get_sync(dev);
|
|
|
+ if (ret < 0) {
|
|
|
+ dev_err(dev, "failed to enable clock, status = %d\n", ret);
|
|
|
+ pm_runtime_put_noidle(dev);
|
|
|
+ goto disable_rpm;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = k3_dsp_rproc_of_get_memories(pdev, kproc);
|
|
|
+ if (ret)
|
|
|
+ goto disable_clk;
|
|
|
+
|
|
|
+ ret = k3_dsp_reserved_mem_init(kproc);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(dev, "reserved memory init failed, ret = %d\n", ret);
|
|
|
+ goto disable_clk;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = kproc->ti_sci->ops.dev_ops.is_on(kproc->ti_sci, kproc->ti_sci_id,
|
|
|
+ &r_state, &p_state);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(dev, "failed to get initial state, mode cannot be determined, ret = %d\n",
|
|
|
+ ret);
|
|
|
+ goto release_mem;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* configure J721E devices for either remoteproc or IPC-only mode */
|
|
|
+ if (p_state) {
|
|
|
+ dev_err(dev, "configured DSP for IPC-only mode\n");
|
|
|
+ rproc->skip_load = 1;
|
|
|
+ kproc->ipc_only = 1;
|
|
|
+ } else {
|
|
|
+ dev_err(dev, "configured DSP for remoteproc mode\n");
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = rproc_add(rproc);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(dev, "failed to add register device with remoteproc core, status = %d\n",
|
|
|
+ ret);
|
|
|
+ goto release_mem;
|
|
|
+ }
|
|
|
+
|
|
|
+ platform_set_drvdata(pdev, kproc);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+release_mem:
|
|
|
+ k3_dsp_reserved_mem_exit(kproc);
|
|
|
+disable_clk:
|
|
|
+ pm_runtime_put_sync(dev);
|
|
|
+disable_rpm:
|
|
|
+ pm_runtime_disable(dev);
|
|
|
+ ret1 = ti_sci_proc_release(kproc->tsp);
|
|
|
+ if (ret1)
|
|
|
+ dev_err(dev, "failed to release proc, ret = %d\n", ret1);
|
|
|
+free_tsp:
|
|
|
+ kfree(kproc->tsp);
|
|
|
+put_sci:
|
|
|
+ ret1 = ti_sci_put_handle(kproc->ti_sci);
|
|
|
+ if (ret1)
|
|
|
+ dev_err(dev, "failed to put ti_sci handle, ret = %d\n", ret1);
|
|
|
+free_rproc:
|
|
|
+ rproc_free(rproc);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int k3_dsp_rproc_remove(struct platform_device *pdev)
|
|
|
+{
|
|
|
+ struct k3_dsp_rproc *kproc = platform_get_drvdata(pdev);
|
|
|
+ struct device *dev = &pdev->dev;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ rproc_del(kproc->rproc);
|
|
|
+ pm_runtime_put_sync(&pdev->dev);
|
|
|
+ pm_runtime_disable(&pdev->dev);
|
|
|
+
|
|
|
+ ret = ti_sci_proc_release(kproc->tsp);
|
|
|
+ if (ret)
|
|
|
+ dev_err(dev, "failed to release proc, ret = %d\n", ret);
|
|
|
+
|
|
|
+ kfree(kproc->tsp);
|
|
|
+
|
|
|
+ ret = ti_sci_put_handle(kproc->ti_sci);
|
|
|
+ if (ret)
|
|
|
+ dev_err(dev, "failed to put ti_sci handle, ret = %d\n", ret);
|
|
|
+
|
|
|
+ k3_dsp_reserved_mem_exit(kproc);
|
|
|
+ rproc_free(kproc->rproc);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static const struct k3_dsp_rproc_dev_data j721e_c66_dsp_dev_data[] = {
|
|
|
+ {
|
|
|
+ .device_name = "4d80800000.dsp",
|
|
|
+ .fw_name = "j7-c66_0-fw",
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .device_name = "4d81800000.dsp",
|
|
|
+ .fw_name = "j7-c66_1-fw",
|
|
|
+ },
|
|
|
+ {
|
|
|
+ /* sentinel */
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+static const struct k3_dsp_rproc_dev_data j721e_c71_dsp_dev_data[] = {
|
|
|
+ {
|
|
|
+ .device_name = "64800000.dsp",
|
|
|
+ .fw_name = "j7-c71_0-fw",
|
|
|
+ },
|
|
|
+ {
|
|
|
+ /* sentinel */
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+static const struct of_device_id k3_dsp_of_match[] = {
|
|
|
+ {
|
|
|
+ .compatible = "ti,j721e-c66-dsp",
|
|
|
+ .data = j721e_c66_dsp_dev_data,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .compatible = "ti,j721e-c71-dsp",
|
|
|
+ .data = j721e_c71_dsp_dev_data,
|
|
|
+ },
|
|
|
+ { /* sentinel */ },
|
|
|
+};
|
|
|
+MODULE_DEVICE_TABLE(of, k3_dsp_of_match);
|
|
|
+
|
|
|
+static struct platform_driver k3_dsp_rproc_driver = {
|
|
|
+ .probe = k3_dsp_rproc_probe,
|
|
|
+ .remove = k3_dsp_rproc_remove,
|
|
|
+ .driver = {
|
|
|
+ .name = "k3-dsp-rproc",
|
|
|
+ .of_match_table = k3_dsp_of_match,
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+module_platform_driver(k3_dsp_rproc_driver);
|
|
|
+
|
|
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+MODULE_AUTHOR("Suman Anna <s-anna@ti.com>");
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+MODULE_LICENSE("GPL v2");
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+MODULE_DESCRIPTION("TI K3 DSP Remoteproc driver");
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LCPD Auto Merger