linux/drivers/remoteproc/qcom_adsp_pil.c
Linus Torvalds 7151202b64 rpmsg updates for v4.14
This extends the Qualcomm GLINK implementation to support the additional
 features used for communicating with modem and DSP coprocessors in modern
 Qualcomm platforms.
 
 In addition to this there's support for placing virtio RPMSG buffers in
 non-System RAM.
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Merge tag 'rpmsg-v4.14' of git://github.com/andersson/remoteproc

Pull rpmsg updates from Bjorn Andersson:
 "This extends the Qualcomm GLINK implementation to support the
  additional features used for communicating with modem and DSP
  coprocessors in modern Qualcomm platforms.

  In addition to this there's support for placing virtio RPMSG buffers
  in non-System RAM"

* tag 'rpmsg-v4.14' of git://github.com/andersson/remoteproc: (29 commits)
  rpmsg: glink: initialize ret to zero to ensure error status check is correct
  rpmsg: glink: fix null pointer dereference on a null intent
  dt-bindings: soc: qcom: Extend GLINK to cover SMEM
  remoteproc: qcom: adsp: Allow defining GLINK edge
  rpmsg: glink: Export symbols from common code
  rpmsg: glink: Release idr lock before returning on error
  rpmsg: glink: Handle remote rx done command
  rpmsg: glink: Request for intents when unavailable
  rpmsg: glink: Use the intents passed by remote
  rpmsg: glink: Receive and store the remote intent buffers
  rpmsg: glink: Add announce_create ops and preallocate intents
  rpmsg: glink: Add rx done command
  rpmsg: glink: Make RX FIFO peak accessor to take an offset
  rpmsg: glink: Use the local intents when receiving data
  rpmsg: glink: Add support for TX intents
  rpmsg: glink: Fix idr_lock from mutex to spinlock
  rpmsg: glink: Add support for transport version negotiation
  rpmsg: glink: Introduce glink smem based transport
  rpmsg: glink: Do a mbox_free_channel in remove
  rpmsg: glink: Return -EAGAIN when there is no FIFO space
  ...
2017-09-09 14:34:38 -07:00

471 lines
10 KiB
C

/*
* Qualcomm ADSP/SLPI Peripheral Image Loader for MSM8974 and MSM8996
*
* Copyright (C) 2016 Linaro Ltd
* Copyright (C) 2014 Sony Mobile Communications AB
* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* 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/clk.h>
#include <linux/firmware.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/qcom_scm.h>
#include <linux/regulator/consumer.h>
#include <linux/remoteproc.h>
#include <linux/soc/qcom/mdt_loader.h>
#include <linux/soc/qcom/smem.h>
#include <linux/soc/qcom/smem_state.h>
#include "qcom_common.h"
#include "remoteproc_internal.h"
struct adsp_data {
int crash_reason_smem;
const char *firmware_name;
int pas_id;
bool has_aggre2_clk;
const char *ssr_name;
};
struct qcom_adsp {
struct device *dev;
struct rproc *rproc;
int wdog_irq;
int fatal_irq;
int ready_irq;
int handover_irq;
int stop_ack_irq;
struct qcom_smem_state *state;
unsigned stop_bit;
struct clk *xo;
struct clk *aggre2_clk;
struct regulator *cx_supply;
struct regulator *px_supply;
int pas_id;
int crash_reason_smem;
bool has_aggre2_clk;
struct completion start_done;
struct completion stop_done;
phys_addr_t mem_phys;
phys_addr_t mem_reloc;
void *mem_region;
size_t mem_size;
struct qcom_rproc_glink glink_subdev;
struct qcom_rproc_subdev smd_subdev;
struct qcom_rproc_ssr ssr_subdev;
};
static int adsp_load(struct rproc *rproc, const struct firmware *fw)
{
struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
return qcom_mdt_load(adsp->dev, fw, rproc->firmware, adsp->pas_id,
adsp->mem_region, adsp->mem_phys, adsp->mem_size);
}
static const struct rproc_fw_ops adsp_fw_ops = {
.find_rsc_table = qcom_mdt_find_rsc_table,
.load = adsp_load,
};
static int adsp_start(struct rproc *rproc)
{
struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
int ret;
ret = clk_prepare_enable(adsp->xo);
if (ret)
return ret;
ret = clk_prepare_enable(adsp->aggre2_clk);
if (ret)
goto disable_xo_clk;
ret = regulator_enable(adsp->cx_supply);
if (ret)
goto disable_aggre2_clk;
ret = regulator_enable(adsp->px_supply);
if (ret)
goto disable_cx_supply;
ret = qcom_scm_pas_auth_and_reset(adsp->pas_id);
if (ret) {
dev_err(adsp->dev,
"failed to authenticate image and release reset\n");
goto disable_px_supply;
}
ret = wait_for_completion_timeout(&adsp->start_done,
msecs_to_jiffies(5000));
if (!ret) {
dev_err(adsp->dev, "start timed out\n");
qcom_scm_pas_shutdown(adsp->pas_id);
ret = -ETIMEDOUT;
goto disable_px_supply;
}
ret = 0;
disable_px_supply:
regulator_disable(adsp->px_supply);
disable_cx_supply:
regulator_disable(adsp->cx_supply);
disable_aggre2_clk:
clk_disable_unprepare(adsp->aggre2_clk);
disable_xo_clk:
clk_disable_unprepare(adsp->xo);
return ret;
}
static int adsp_stop(struct rproc *rproc)
{
struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
int ret;
qcom_smem_state_update_bits(adsp->state,
BIT(adsp->stop_bit),
BIT(adsp->stop_bit));
ret = wait_for_completion_timeout(&adsp->stop_done,
msecs_to_jiffies(5000));
if (ret == 0)
dev_err(adsp->dev, "timed out on wait\n");
qcom_smem_state_update_bits(adsp->state,
BIT(adsp->stop_bit),
0);
ret = qcom_scm_pas_shutdown(adsp->pas_id);
if (ret)
dev_err(adsp->dev, "failed to shutdown: %d\n", ret);
return ret;
}
static void *adsp_da_to_va(struct rproc *rproc, u64 da, int len)
{
struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
int offset;
offset = da - adsp->mem_reloc;
if (offset < 0 || offset + len > adsp->mem_size)
return NULL;
return adsp->mem_region + offset;
}
static const struct rproc_ops adsp_ops = {
.start = adsp_start,
.stop = adsp_stop,
.da_to_va = adsp_da_to_va,
};
static irqreturn_t adsp_wdog_interrupt(int irq, void *dev)
{
struct qcom_adsp *adsp = dev;
rproc_report_crash(adsp->rproc, RPROC_WATCHDOG);
return IRQ_HANDLED;
}
static irqreturn_t adsp_fatal_interrupt(int irq, void *dev)
{
struct qcom_adsp *adsp = dev;
size_t len;
char *msg;
msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, adsp->crash_reason_smem, &len);
if (!IS_ERR(msg) && len > 0 && msg[0])
dev_err(adsp->dev, "fatal error received: %s\n", msg);
rproc_report_crash(adsp->rproc, RPROC_FATAL_ERROR);
if (!IS_ERR(msg))
msg[0] = '\0';
return IRQ_HANDLED;
}
static irqreturn_t adsp_ready_interrupt(int irq, void *dev)
{
return IRQ_HANDLED;
}
static irqreturn_t adsp_handover_interrupt(int irq, void *dev)
{
struct qcom_adsp *adsp = dev;
complete(&adsp->start_done);
return IRQ_HANDLED;
}
static irqreturn_t adsp_stop_ack_interrupt(int irq, void *dev)
{
struct qcom_adsp *adsp = dev;
complete(&adsp->stop_done);
return IRQ_HANDLED;
}
static int adsp_init_clock(struct qcom_adsp *adsp)
{
int ret;
adsp->xo = devm_clk_get(adsp->dev, "xo");
if (IS_ERR(adsp->xo)) {
ret = PTR_ERR(adsp->xo);
if (ret != -EPROBE_DEFER)
dev_err(adsp->dev, "failed to get xo clock");
return ret;
}
if (adsp->has_aggre2_clk) {
adsp->aggre2_clk = devm_clk_get(adsp->dev, "aggre2");
if (IS_ERR(adsp->aggre2_clk)) {
ret = PTR_ERR(adsp->aggre2_clk);
if (ret != -EPROBE_DEFER)
dev_err(adsp->dev,
"failed to get aggre2 clock");
return ret;
}
}
return 0;
}
static int adsp_init_regulator(struct qcom_adsp *adsp)
{
adsp->cx_supply = devm_regulator_get(adsp->dev, "cx");
if (IS_ERR(adsp->cx_supply))
return PTR_ERR(adsp->cx_supply);
regulator_set_load(adsp->cx_supply, 100000);
adsp->px_supply = devm_regulator_get(adsp->dev, "px");
return PTR_ERR_OR_ZERO(adsp->px_supply);
}
static int adsp_request_irq(struct qcom_adsp *adsp,
struct platform_device *pdev,
const char *name,
irq_handler_t thread_fn)
{
int ret;
ret = platform_get_irq_byname(pdev, name);
if (ret < 0) {
dev_err(&pdev->dev, "no %s IRQ defined\n", name);
return ret;
}
ret = devm_request_threaded_irq(&pdev->dev, ret,
NULL, thread_fn,
IRQF_ONESHOT,
"adsp", adsp);
if (ret)
dev_err(&pdev->dev, "request %s IRQ failed\n", name);
return ret;
}
static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
{
struct device_node *node;
struct resource r;
int ret;
node = of_parse_phandle(adsp->dev->of_node, "memory-region", 0);
if (!node) {
dev_err(adsp->dev, "no memory-region specified\n");
return -EINVAL;
}
ret = of_address_to_resource(node, 0, &r);
if (ret)
return ret;
adsp->mem_phys = adsp->mem_reloc = r.start;
adsp->mem_size = resource_size(&r);
adsp->mem_region = devm_ioremap_wc(adsp->dev, adsp->mem_phys, adsp->mem_size);
if (!adsp->mem_region) {
dev_err(adsp->dev, "unable to map memory region: %pa+%zx\n",
&r.start, adsp->mem_size);
return -EBUSY;
}
return 0;
}
static int adsp_probe(struct platform_device *pdev)
{
const struct adsp_data *desc;
struct qcom_adsp *adsp;
struct rproc *rproc;
int ret;
desc = of_device_get_match_data(&pdev->dev);
if (!desc)
return -EINVAL;
if (!qcom_scm_is_available())
return -EPROBE_DEFER;
rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops,
desc->firmware_name, sizeof(*adsp));
if (!rproc) {
dev_err(&pdev->dev, "unable to allocate remoteproc\n");
return -ENOMEM;
}
rproc->fw_ops = &adsp_fw_ops;
adsp = (struct qcom_adsp *)rproc->priv;
adsp->dev = &pdev->dev;
adsp->rproc = rproc;
adsp->pas_id = desc->pas_id;
adsp->crash_reason_smem = desc->crash_reason_smem;
adsp->has_aggre2_clk = desc->has_aggre2_clk;
platform_set_drvdata(pdev, adsp);
init_completion(&adsp->start_done);
init_completion(&adsp->stop_done);
ret = adsp_alloc_memory_region(adsp);
if (ret)
goto free_rproc;
ret = adsp_init_clock(adsp);
if (ret)
goto free_rproc;
ret = adsp_init_regulator(adsp);
if (ret)
goto free_rproc;
ret = adsp_request_irq(adsp, pdev, "wdog", adsp_wdog_interrupt);
if (ret < 0)
goto free_rproc;
adsp->wdog_irq = ret;
ret = adsp_request_irq(adsp, pdev, "fatal", adsp_fatal_interrupt);
if (ret < 0)
goto free_rproc;
adsp->fatal_irq = ret;
ret = adsp_request_irq(adsp, pdev, "ready", adsp_ready_interrupt);
if (ret < 0)
goto free_rproc;
adsp->ready_irq = ret;
ret = adsp_request_irq(adsp, pdev, "handover", adsp_handover_interrupt);
if (ret < 0)
goto free_rproc;
adsp->handover_irq = ret;
ret = adsp_request_irq(adsp, pdev, "stop-ack", adsp_stop_ack_interrupt);
if (ret < 0)
goto free_rproc;
adsp->stop_ack_irq = ret;
adsp->state = qcom_smem_state_get(&pdev->dev, "stop",
&adsp->stop_bit);
if (IS_ERR(adsp->state)) {
ret = PTR_ERR(adsp->state);
goto free_rproc;
}
qcom_add_glink_subdev(rproc, &adsp->glink_subdev);
qcom_add_smd_subdev(rproc, &adsp->smd_subdev);
qcom_add_ssr_subdev(rproc, &adsp->ssr_subdev, desc->ssr_name);
ret = rproc_add(rproc);
if (ret)
goto free_rproc;
return 0;
free_rproc:
rproc_free(rproc);
return ret;
}
static int adsp_remove(struct platform_device *pdev)
{
struct qcom_adsp *adsp = platform_get_drvdata(pdev);
qcom_smem_state_put(adsp->state);
rproc_del(adsp->rproc);
qcom_remove_glink_subdev(adsp->rproc, &adsp->glink_subdev);
qcom_remove_smd_subdev(adsp->rproc, &adsp->smd_subdev);
qcom_remove_ssr_subdev(adsp->rproc, &adsp->ssr_subdev);
rproc_free(adsp->rproc);
return 0;
}
static const struct adsp_data adsp_resource_init = {
.crash_reason_smem = 423,
.firmware_name = "adsp.mdt",
.pas_id = 1,
.has_aggre2_clk = false,
.ssr_name = "lpass",
};
static const struct adsp_data slpi_resource_init = {
.crash_reason_smem = 424,
.firmware_name = "slpi.mdt",
.pas_id = 12,
.has_aggre2_clk = true,
.ssr_name = "dsps",
};
static const struct of_device_id adsp_of_match[] = {
{ .compatible = "qcom,msm8974-adsp-pil", .data = &adsp_resource_init},
{ .compatible = "qcom,msm8996-adsp-pil", .data = &adsp_resource_init},
{ .compatible = "qcom,msm8996-slpi-pil", .data = &slpi_resource_init},
{ },
};
MODULE_DEVICE_TABLE(of, adsp_of_match);
static struct platform_driver adsp_driver = {
.probe = adsp_probe,
.remove = adsp_remove,
.driver = {
.name = "qcom_adsp_pil",
.of_match_table = adsp_of_match,
},
};
module_platform_driver(adsp_driver);
MODULE_DESCRIPTION("Qualcomm MSM8974/MSM8996 ADSP Peripherial Image Loader");
MODULE_LICENSE("GPL v2");