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787 lines
21 KiB
787 lines
21 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
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* TI K3 DSP Remote Processor(s) driver |
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* |
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* Copyright (C) 2018-2020 Texas Instruments Incorporated - https://www.ti.com/ |
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* Suman Anna <[email protected]> |
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*/ |
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|
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#include <linux/io.h> |
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#include <linux/mailbox_client.h> |
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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/omap-mailbox.h> |
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#include <linux/platform_device.h> |
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#include <linux/remoteproc.h> |
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#include <linux/reset.h> |
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#include <linux/slab.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_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_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_mem_data - memory definitions for a DSP |
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* @name: name for this memory entry |
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* @dev_addr: device address for the memory entry |
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*/ |
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struct k3_dsp_mem_data { |
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const char *name; |
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const u32 dev_addr; |
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}; |
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|
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/** |
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* struct k3_dsp_dev_data - device data structure for a DSP |
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* @mems: pointer to memory definitions for a DSP |
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* @num_mems: number of memory regions in @mems |
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* @boot_align_addr: boot vector address alignment granularity |
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* @uses_lreset: flag to denote the need for local reset management |
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*/ |
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struct k3_dsp_dev_data { |
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const struct k3_dsp_mem_data *mems; |
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u32 num_mems; |
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u32 boot_align_addr; |
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bool uses_lreset; |
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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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* @data: pointer to DSP-specific device data |
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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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*/ |
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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_mem *mem; |
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int num_mems; |
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struct k3_dsp_mem *rmem; |
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int num_rmems; |
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struct reset_control *reset; |
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const struct k3_dsp_dev_data *data; |
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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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}; |
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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 = omap_mbox_message(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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/* 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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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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|
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if (kproc->data->uses_lreset) |
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return ret; |
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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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if (reset_control_deassert(kproc->reset)) |
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dev_warn(dev, "local-reset deassert back failed\n"); |
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} |
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|
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return ret; |
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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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if (kproc->data->uses_lreset) |
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goto lreset; |
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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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lreset: |
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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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|
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return ret; |
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} |
|
|
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/* |
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* The C66x DSP cores have a local reset that affects only the CPU, and a |
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* generic module reset that powers on the device and allows the DSP internal |
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* memories to be accessed while the local reset is asserted. This function is |
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* used to release the global reset on C66x DSPs to allow loading into the DSP |
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* internal RAMs. The .prepare() ops is invoked by remoteproc core before any |
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* firmware loading, and is followed by the .start() ops after loading to |
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* actually let the C66x DSP cores run. |
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*/ |
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static int k3_dsp_rproc_prepare(struct rproc *rproc) |
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{ |
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struct k3_dsp_rproc *kproc = rproc->priv; |
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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, cannot enable internal RAM loading, ret = %d\n", |
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ret); |
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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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* This function implements the .unprepare() ops and performs the complimentary |
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* operations to that of the .prepare() ops. The function is used to assert the |
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* global reset on applicable C66x cores. This completes the second portion of |
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* powering down the C66x DSP cores. The cores themselves are only halted in the |
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* .stop() callback through the local reset, and the .unprepare() ops is invoked |
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* by the remoteproc core after the remoteproc is stopped to balance the global |
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* reset. |
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*/ |
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static int k3_dsp_rproc_unprepare(struct rproc *rproc) |
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{ |
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struct k3_dsp_rproc *kproc = rproc->priv; |
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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.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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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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* 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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boot_addr = rproc->bootaddr; |
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if (boot_addr & (kproc->data->boot_align_addr - 1)) { |
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dev_err(dev, "invalid boot address 0x%x, must be aligned on a 0x%x boundary\n", |
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boot_addr, kproc->data->boot_align_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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return 0; |
|
|
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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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* 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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mbox_free_channel(kproc->mbox); |
|
|
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k3_dsp_rproc_reset(kproc); |
|
|
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return 0; |
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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 |
|
* 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, size_t len, bool *is_iomem) |
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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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if (len == 0) |
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return NULL; |
|
|
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for (i = 0; i < kproc->num_mems; i++) { |
|
bus_addr = kproc->mem[i].bus_addr; |
|
dev_addr = kproc->mem[i].dev_addr; |
|
size = kproc->mem[i].size; |
|
|
|
if (da < KEYSTONE_RPROC_LOCAL_ADDRESS_MASK) { |
|
/* handle DSP-view addresses */ |
|
if (da >= dev_addr && |
|
((da + len) <= (dev_addr + size))) { |
|
offset = da - dev_addr; |
|
va = kproc->mem[i].cpu_addr + offset; |
|
return (__force void *)va; |
|
} |
|
} else { |
|
/* handle SoC-view addresses */ |
|
if (da >= bus_addr && |
|
(da + len) <= (bus_addr + size)) { |
|
offset = da - bus_addr; |
|
va = kproc->mem[i].cpu_addr + offset; |
|
return (__force void *)va; |
|
} |
|
} |
|
} |
|
|
|
/* handle static DDR reserved memory regions */ |
|
for (i = 0; i < kproc->num_rmems; i++) { |
|
dev_addr = kproc->rmem[i].dev_addr; |
|
size = kproc->rmem[i].size; |
|
|
|
if (da >= dev_addr && ((da + len) <= (dev_addr + size))) { |
|
offset = da - dev_addr; |
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va = kproc->rmem[i].cpu_addr + offset; |
|
return (__force void *)va; |
|
} |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static const struct rproc_ops k3_dsp_rproc_ops = { |
|
.start = k3_dsp_rproc_start, |
|
.stop = k3_dsp_rproc_stop, |
|
.kick = k3_dsp_rproc_kick, |
|
.da_to_va = k3_dsp_rproc_da_to_va, |
|
}; |
|
|
|
static int k3_dsp_rproc_of_get_memories(struct platform_device *pdev, |
|
struct k3_dsp_rproc *kproc) |
|
{ |
|
const struct k3_dsp_dev_data *data = kproc->data; |
|
struct device *dev = &pdev->dev; |
|
struct resource *res; |
|
int num_mems = 0; |
|
int i; |
|
|
|
num_mems = kproc->data->num_mems; |
|
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++) { |
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
|
data->mems[i].name); |
|
if (!res) { |
|
dev_err(dev, "found no memory resource for %s\n", |
|
data->mems[i].name); |
|
return -EINVAL; |
|
} |
|
if (!devm_request_mem_region(dev, res->start, |
|
resource_size(res), |
|
dev_name(dev))) { |
|
dev_err(dev, "could not request %s region for resource\n", |
|
data->mems[i].name); |
|
return -EBUSY; |
|
} |
|
|
|
kproc->mem[i].cpu_addr = devm_ioremap_wc(dev, res->start, |
|
resource_size(res)); |
|
if (!kproc->mem[i].cpu_addr) { |
|
dev_err(dev, "failed to map %s memory\n", |
|
data->mems[i].name); |
|
return -ENOMEM; |
|
} |
|
kproc->mem[i].bus_addr = res->start; |
|
kproc->mem[i].dev_addr = data->mems[i].dev_addr; |
|
kproc->mem[i].size = resource_size(res); |
|
|
|
dev_dbg(dev, "memory %8s: bus addr %pa size 0x%zx va %pK da 0x%x\n", |
|
data->mems[i].name, &kproc->mem[i].bus_addr, |
|
kproc->mem[i].size, kproc->mem[i].cpu_addr, |
|
kproc->mem[i].dev_addr); |
|
} |
|
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--) |
|
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; |
|
const struct k3_dsp_dev_data *data; |
|
struct k3_dsp_rproc *kproc; |
|
struct rproc *rproc; |
|
const char *fw_name; |
|
int ret = 0; |
|
int ret1; |
|
|
|
data = of_device_get_match_data(dev); |
|
if (!data) |
|
return -ENODEV; |
|
|
|
ret = rproc_of_parse_firmware(dev, 0, &fw_name); |
|
if (ret) { |
|
dev_err(dev, "failed to parse firmware-name property, ret = %d\n", |
|
ret); |
|
return ret; |
|
} |
|
|
|
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; |
|
if (data->uses_lreset) { |
|
rproc->ops->prepare = k3_dsp_rproc_prepare; |
|
rproc->ops->unprepare = k3_dsp_rproc_unprepare; |
|
} |
|
kproc = rproc->priv; |
|
kproc->rproc = rproc; |
|
kproc->dev = dev; |
|
kproc->data = data; |
|
|
|
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; |
|
} |
|
|
|
ret = k3_dsp_rproc_of_get_memories(pdev, kproc); |
|
if (ret) |
|
goto release_tsp; |
|
|
|
ret = k3_dsp_reserved_mem_init(kproc); |
|
if (ret) { |
|
dev_err(dev, "reserved memory init failed, ret = %d\n", ret); |
|
goto release_tsp; |
|
} |
|
|
|
/* |
|
* ensure the DSP local reset is asserted to ensure the DSP doesn't |
|
* execute bogus code in .prepare() when the module reset is released. |
|
*/ |
|
if (data->uses_lreset) { |
|
ret = reset_control_status(kproc->reset); |
|
if (ret < 0) { |
|
dev_err(dev, "failed to get reset status, status = %d\n", |
|
ret); |
|
goto release_mem; |
|
} else if (ret == 0) { |
|
dev_warn(dev, "local reset is deasserted for device\n"); |
|
k3_dsp_rproc_reset(kproc); |
|
} |
|
} |
|
|
|
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); |
|
release_tsp: |
|
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); |
|
|
|
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_mem_data c66_mems[] = { |
|
{ .name = "l2sram", .dev_addr = 0x800000 }, |
|
{ .name = "l1pram", .dev_addr = 0xe00000 }, |
|
{ .name = "l1dram", .dev_addr = 0xf00000 }, |
|
}; |
|
|
|
/* C71x cores only have a L1P Cache, there are no L1P SRAMs */ |
|
static const struct k3_dsp_mem_data c71_mems[] = { |
|
{ .name = "l2sram", .dev_addr = 0x800000 }, |
|
{ .name = "l1dram", .dev_addr = 0xe00000 }, |
|
}; |
|
|
|
static const struct k3_dsp_dev_data c66_data = { |
|
.mems = c66_mems, |
|
.num_mems = ARRAY_SIZE(c66_mems), |
|
.boot_align_addr = SZ_1K, |
|
.uses_lreset = true, |
|
}; |
|
|
|
static const struct k3_dsp_dev_data c71_data = { |
|
.mems = c71_mems, |
|
.num_mems = ARRAY_SIZE(c71_mems), |
|
.boot_align_addr = SZ_2M, |
|
.uses_lreset = false, |
|
}; |
|
|
|
static const struct of_device_id k3_dsp_of_match[] = { |
|
{ .compatible = "ti,j721e-c66-dsp", .data = &c66_data, }, |
|
{ .compatible = "ti,j721e-c71-dsp", .data = &c71_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); |
|
|
|
MODULE_AUTHOR("Suman Anna <[email protected]>"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_DESCRIPTION("TI K3 DSP Remoteproc driver");
|
|
|