kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

remoteproc updates for v4.9

Browse source 
In addition to a slew of minor fixes and cleanups these patches refactors how
 we deal with remoteprocs that will be auto-booting themselves, this in itself
 do clean up the remote resource handling but opens for additional work to
 clarify responsibilities and life cycles of resources. We also revise how
 module locking of remoteproc drivers work, so that they are locked as we hand
 out references to them to third parties, rather than only when booted by
 anyone.
 
 In addition to this we also introduce the Qualcomm Wireless Subsystem
 remoteproc driver.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJX9Xl0AAoJEAsfOT8Nma3FwsMP/R44bOoIgKPF1ph9FfGn5gHC
 1mgdSDBkWQgFeWE/hiDvL9YjPUwBZz9yhxzKw9aOuG21a6/53Hx164glC7Jumwgj
 39dDtge4SRqJn83PbbRxMJdjFqrtjV1E2MWQXWYG76IS5CSH6xh884cInaoQZMk/
 kL8eFOCzWIrE+PcntZh1LJ4+sOrDLAxeVEDT0V6KgefRs8/Ecn0BpUQChNS2hxpf
 cBduZBFYhaSLcsJsu75IQRJmSG1dcVDSfdheV+CylXd0ETcuQaYgEglx9S739dvS
 J0sr/4LZf9vUkM8gDRZoF9ZFkR8gj2lm6d7rLFijSdK65cvjiEF4I/0FCUyadjxU
 SQYa+7Q9sFAXbBaDrUdI1KTjaEgudlpl+AMb220Ulko6r2NRrfmyQNGmk9htbo1A
 DrWqMG176pcWus/GSBPVNvuBdUvS6qsCtTZCg87W6mZvdTxaoFPYppjfpuhm6D3v
 3k6m5usFh7N9gF3QVoaA775qEbOsFGp8GX+/BvxFKgThQs4OQ6DXzi9qDTOs6W2Q
 iW8yMtv7PEncX/u4UvF8bFRD/Gy/1vTfm8DLuT4MBWkhu7q615m50bqX0godI0s6
 5pqV0TPn9M93cOrWAqpdoLouypRHsEfh8ZE+Yuji6A1I2wAqM1HeLP4gvjau99nS
 Mqzqw/IE4jD4/EkELEli
 =nREP
 -----END PGP SIGNATURE-----

Merge tag 'rproc-v4.9' of git://github.com/andersson/remoteproc

Pull remoteproc updates from Bjorn Andersson:
 "In addition to a slew of minor fixes and cleanups these patches
  refactor how we deal with remoteprocs that will be auto-booting
  themselves.

  That does clean up the remote resource handling but makes for
  additional work to clarify responsibilities and life cycles of
  resources. We also revise how module locking of remoteproc drivers
  work, so that they are locked as we hand out references to them to
  third parties, rather than only when booted by anyone.

  In addition to that we also introduce the Qualcomm Wireless Subsystem
  remoteproc driver"

* tag 'rproc-v4.9' of git://github.com/andersson/remoteproc: (26 commits)
  remoteproc: Refactor rproc module locking
  remoteproc: Split driver and consumer dereferencing
  remoteproc: Correct resource handling upon boot failure
  remoteproc: Drop unnecessary NULL check
  remoteproc: core: transform struct fw_rsc_vdev_vring reserved field in pa
  remoteproc: Modify FW_RSC_ADDR_ANY definition
  remoteproc: qcom: wcnss: Fix return value check in wcnss_probe()
  remoteproc: qcom: Introduce WCNSS peripheral image loader
  dt-binding: remoteproc: Introduce Qualcomm WCNSS loader binding
  remoteproc: Only update table_ptr if we have a loaded table
  remoteproc: Move handling of cached table to boot/shutdown
  remoteproc: Move vdev handling to boot/shutdown
  remoteproc: Calculate max_notifyid during load
  remoteproc: Introduce auto-boot flag
  remoteproc/omap: revise a minor error trace message
  remoteproc/omap: fix various code formatting issues
  remoteproc: print hex numbers with a leading 0x format
  remoteproc: align code with open parenthesis
  remoteproc: fix bare unsigned type usage
  remoteproc: use variable names for sizeof() operator
  ...
This commit is contained in:
Linus Torvalds 2016-10-06 17:00:09 -07:00
commit d880e5ad0d
20 changed files with 1168 additions and 205 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

132
Documentation/devicetree/bindings/remoteproc/qcom,wcnss-pil.txt Normal file
View file

@ -0,0 +1,132 @@
Qualcomm WCNSS Peripheral Image Loader
This document defines the binding for a component that loads and boots firmware
on the Qualcomm WCNSS core.
- compatible:
Usage: required
Value type: <string>
Definition: must be one of:
"qcom,riva-pil",
"qcom,pronto-v1-pil",
"qcom,pronto-v2-pil"
- reg:
Usage: required
Value type: <prop-encoded-array>
Definition: must specify the base address and size of the CCU, DXE and
PMU register blocks
- reg-names:
Usage: required
Value type: <stringlist>
Definition: must be "ccu", "dxe", "pmu"
- interrupts-extended:
Usage: required
Value type: <prop-encoded-array>
Definition: must list the watchdog and fatal IRQs and may specify the
ready, handover and stop-ack IRQs
- interrupt-names:
Usage: required
Value type: <stringlist>
Definition: should be "wdog", "fatal", optionally followed by "ready",
"handover", "stop-ack"
- vddmx-supply:
- vddcx-supply:
- vddpx-supply:
Usage: required
Value type: <phandle>
Definition: reference to the regulators to be held on behalf of the
booting of the WCNSS core
- qcom,smem-states:
Usage: optional
Value type: <prop-encoded-array>
Definition: reference to the SMEM state used to indicate to WCNSS that
it should shut down
- qcom,smem-state-names:
Usage: optional
Value type: <stringlist>
Definition: should be "stop"
- memory-region:
Usage: required
Value type: <prop-encoded-array>
Definition: reference to reserved-memory node for the remote processor
see ../reserved-memory/reserved-memory.txt
= SUBNODES
A single subnode of the WCNSS PIL describes the attached rf module and its
resource dependencies.
- compatible:
Usage: required
Value type: <string>
Definition: must be one of:
"qcom,wcn3620",
"qcom,wcn3660",
"qcom,wcn3680"
- clocks:
Usage: required
Value type: <prop-encoded-array>
Definition: should specify the xo clock and optionally the rf clock
- clock-names:
Usage: required
Value type: <stringlist>
Definition: should be "xo", optionally followed by "rf"
- vddxo-supply:
- vddrfa-supply:
- vddpa-supply:
- vdddig-supply:
Usage: required
Value type: <phandle>
Definition: reference to the regulators to be held on behalf of the
booting of the WCNSS core
= EXAMPLE
The following example describes the resources needed to boot control the WCNSS,
with attached WCN3680, as it is commonly found on MSM8974 boards.
pronto@fb204000 {
compatible = "qcom,pronto-v2-pil";
reg = <0xfb204000 0x2000>, <0xfb202000 0x1000>, <0xfb21b000 0x3000>;
reg-names = "ccu", "dxe", "pmu";
interrupts-extended = <&intc 0 149 1>,
<&wcnss_smp2p_slave 0 0>,
<&wcnss_smp2p_slave 1 0>,
<&wcnss_smp2p_slave 2 0>,
<&wcnss_smp2p_slave 3 0>;
interrupt-names = "wdog", "fatal", "ready", "handover", "stop-ack";
vddmx-supply = <&pm8841_s1>;
vddcx-supply = <&pm8841_s2>;
vddpx-supply = <&pm8941_s3>;
qcom,smem-states = <&wcnss_smp2p_out 0>;
qcom,smem-state-names = "stop";
memory-region = <&wcnss_region>;
pinctrl-names = "default";
pinctrl-0 = <&wcnss_pin_a>;
iris {
compatible = "qcom,wcn3680";
clocks = <&rpmcc RPM_CXO_CLK_SRC>, <&rpmcc RPM_CXO_A2>;
clock-names = "xo", "rf";
vddxo-supply = <&pm8941_l6>;
vddrfa-supply = <&pm8941_l11>;
vddpa-supply = <&pm8941_l19>;
vdddig-supply = <&pm8941_s3>;
};
};

6
Documentation/remoteproc.txt
View file

@ -101,9 +101,9 @@ int dummy_rproc_example(struct rproc *my_rproc)
On success, the new rproc is returned, and on failure, NULL.
Note: _never_ directly deallocate @rproc, even if it was not registered
yet. Instead, when you need to unroll rproc_alloc(), use rproc_put().
yet. Instead, when you need to unroll rproc_alloc(), use rproc_free().
void rproc_put(struct rproc *rproc)
void rproc_free(struct rproc *rproc)
- Free an rproc handle that was allocated by rproc_alloc.
This function essentially unrolls rproc_alloc(), by decrementing the
rproc's refcount. It doesn't directly free rproc; that would happen
@ -131,7 +131,7 @@ int dummy_rproc_example(struct rproc *my_rproc)
has completed successfully.
After rproc_del() returns, @rproc is still valid, and its
last refcount should be decremented by calling rproc_put().
last refcount should be decremented by calling rproc_free().
Returns 0 on success and -EINVAL if @rproc isn't valid.

16
drivers/remoteproc/Kconfig
View file

@ -91,6 +91,22 @@ config QCOM_Q6V5_PIL
Say y here to support the Qualcomm Peripherial Image Loader for the
Hexagon V5 based remote processors.
config QCOM_WCNSS_IRIS
tristate
depends on OF && ARCH_QCOM
config QCOM_WCNSS_PIL
tristate "Qualcomm WCNSS Peripheral Image Loader"
depends on OF && ARCH_QCOM
depends on QCOM_SMEM
select QCOM_MDT_LOADER
select QCOM_SCM
select QCOM_WCNSS_IRIS
select REMOTEPROC
help
Say y here to support the Peripheral Image Loader for the Qualcomm
Wireless Connectivity Subsystem.
config ST_REMOTEPROC
tristate "ST remoteproc support"
depends on ARCH_STI

2
drivers/remoteproc/Makefile
View file

@ -13,4 +13,6 @@ obj-$(CONFIG_WKUP_M3_RPROC) += wkup_m3_rproc.o
obj-$(CONFIG_DA8XX_REMOTEPROC) += da8xx_remoteproc.o
obj-$(CONFIG_QCOM_MDT_LOADER) += qcom_mdt_loader.o
obj-$(CONFIG_QCOM_Q6V5_PIL) += qcom_q6v5_pil.o
obj-$(CONFIG_QCOM_WCNSS_IRIS) += qcom_wcnss_iris.o
obj-$(CONFIG_QCOM_WCNSS_PIL) += qcom_wcnss.o
obj-$(CONFIG_ST_REMOTEPROC) += st_remoteproc.o

6
drivers/remoteproc/da8xx_remoteproc.c
View file

@ -147,7 +147,7 @@ static void da8xx_rproc_kick(struct rproc *rproc, int vqid)
{
struct da8xx_rproc *drproc = (struct da8xx_rproc *)rproc->priv;
/* Interupt remote proc */
/* Interrupt remote proc */
writel(SYSCFG_CHIPSIG2, drproc->chipsig);
}
@ -261,7 +261,7 @@ static int da8xx_rproc_probe(struct platform_device *pdev)
return 0;
free_rproc:
rproc_put(rproc);
rproc_free(rproc);
return ret;
}
@ -290,7 +290,7 @@ static int da8xx_rproc_remove(struct platform_device *pdev)
disable_irq(drproc->irq);
rproc_del(rproc);
rproc_put(rproc);
rproc_free(rproc);
return 0;
}

9
drivers/remoteproc/omap_remoteproc.c
View file

@ -96,7 +96,8 @@ static void omap_rproc_kick(struct rproc *rproc, int vqid)
/* send the index of the triggered virtqueue in the mailbox payload */
ret = mbox_send_message(oproc->mbox, (void *)vqid);
if (ret < 0)
dev_err(dev, "omap_mbox_msg_send failed: %d\n", ret);
dev_err(dev, "failed to send mailbox message, status = %d\n",
ret);
}
/*
@ -196,7 +197,7 @@ static int omap_rproc_probe(struct platform_device *pdev)
}
rproc = rproc_alloc(&pdev->dev, pdata->name, &omap_rproc_ops,
pdata->firmware, sizeof(*oproc));
pdata->firmware, sizeof(*oproc));
if (!rproc)
return -ENOMEM;
@ -214,7 +215,7 @@ static int omap_rproc_probe(struct platform_device *pdev)
return 0;
free_rproc:
rproc_put(rproc);
rproc_free(rproc);
return ret;
}
@ -223,7 +224,7 @@ static int omap_rproc_remove(struct platform_device *pdev)
struct rproc *rproc = platform_get_drvdata(pdev);
rproc_del(rproc);
rproc_put(rproc);
rproc_free(rproc);
return 0;
}

8
drivers/remoteproc/qcom_q6v5_pil.c
View file

@ -863,8 +863,10 @@ static int q6v5_probe(struct platform_device *pdev)
goto free_rproc;
qproc->state = qcom_smem_state_get(&pdev->dev, "stop", &qproc->stop_bit);
if (IS_ERR(qproc->state))
if (IS_ERR(qproc->state)) {
ret = PTR_ERR(qproc->state);
goto free_rproc;
}
ret = rproc_add(rproc);
if (ret)
@ -873,7 +875,7 @@ static int q6v5_probe(struct platform_device *pdev)
return 0;
free_rproc:
rproc_put(rproc);
rproc_free(rproc);
return ret;
}
@ -883,7 +885,7 @@ static int q6v5_remove(struct platform_device *pdev)
struct q6v5 *qproc = platform_get_drvdata(pdev);
rproc_del(qproc->rproc);
rproc_put(qproc->rproc);
rproc_free(qproc->rproc);
return 0;
}

624
drivers/remoteproc/qcom_wcnss.c Normal file
View file

@ -0,0 +1,624 @@
/*
* Qualcomm Wireless Connectivity Subsystem Peripheral Image Loader
*
* 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/delay.h>
#include <linux/firmware.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/io.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/smem.h>
#include <linux/soc/qcom/smem_state.h>
#include "qcom_mdt_loader.h"
#include "remoteproc_internal.h"
#include "qcom_wcnss.h"
#define WCNSS_CRASH_REASON_SMEM 422
#define WCNSS_FIRMWARE_NAME "wcnss.mdt"
#define WCNSS_PAS_ID 6
#define WCNSS_SPARE_NVBIN_DLND BIT(25)
#define WCNSS_PMU_IRIS_XO_CFG BIT(3)
#define WCNSS_PMU_IRIS_XO_EN BIT(4)
#define WCNSS_PMU_GC_BUS_MUX_SEL_TOP BIT(5)
#define WCNSS_PMU_IRIS_XO_CFG_STS BIT(6) /* 1: in progress, 0: done */
#define WCNSS_PMU_IRIS_RESET BIT(7)
#define WCNSS_PMU_IRIS_RESET_STS BIT(8) /* 1: in progress, 0: done */
#define WCNSS_PMU_IRIS_XO_READ BIT(9)
#define WCNSS_PMU_IRIS_XO_READ_STS BIT(10)
#define WCNSS_PMU_XO_MODE_MASK GENMASK(2, 1)
#define WCNSS_PMU_XO_MODE_19p2 0
#define WCNSS_PMU_XO_MODE_48 3
struct wcnss_data {
size_t pmu_offset;
size_t spare_offset;
const struct wcnss_vreg_info *vregs;
size_t num_vregs;
};
struct qcom_wcnss {
struct device *dev;
struct rproc *rproc;
void __iomem *pmu_cfg;
void __iomem *spare_out;
bool use_48mhz_xo;
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 mutex iris_lock;
struct qcom_iris *iris;
struct regulator_bulk_data *vregs;
size_t num_vregs;
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;
};
static const struct wcnss_data riva_data = {
.pmu_offset = 0x28,
.spare_offset = 0xb4,
.vregs = (struct wcnss_vreg_info[]) {
{ "vddmx", 1050000, 1150000, 0 },
{ "vddcx", 1050000, 1150000, 0 },
{ "vddpx", 1800000, 1800000, 0 },
},
.num_vregs = 3,
};
static const struct wcnss_data pronto_v1_data = {
.pmu_offset = 0x1004,
.spare_offset = 0x1088,
.vregs = (struct wcnss_vreg_info[]) {
{ "vddmx", 950000, 1150000, 0 },
{ "vddcx", .super_turbo = true},
{ "vddpx", 1800000, 1800000, 0 },
},
.num_vregs = 3,
};
static const struct wcnss_data pronto_v2_data = {
.pmu_offset = 0x1004,
.spare_offset = 0x1088,
.vregs = (struct wcnss_vreg_info[]) {
{ "vddmx", 1287500, 1287500, 0 },
{ "vddcx", .super_turbo = true },
{ "vddpx", 1800000, 1800000, 0 },
},
.num_vregs = 3,
};
void qcom_wcnss_assign_iris(struct qcom_wcnss *wcnss,
struct qcom_iris *iris,
bool use_48mhz_xo)
{
mutex_lock(&wcnss->iris_lock);
wcnss->iris = iris;
wcnss->use_48mhz_xo = use_48mhz_xo;
mutex_unlock(&wcnss->iris_lock);
}
EXPORT_SYMBOL_GPL(qcom_wcnss_assign_iris);
static int wcnss_load(struct rproc *rproc, const struct firmware *fw)
{
struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
phys_addr_t fw_addr;
size_t fw_size;
bool relocate;
int ret;
ret = qcom_scm_pas_init_image(WCNSS_PAS_ID, fw->data, fw->size);
if (ret) {
dev_err(&rproc->dev, "invalid firmware metadata\n");
return ret;
}
ret = qcom_mdt_parse(fw, &fw_addr, &fw_size, &relocate);
if (ret) {
dev_err(&rproc->dev, "failed to parse mdt header\n");
return ret;
}
if (relocate) {
wcnss->mem_reloc = fw_addr;
ret = qcom_scm_pas_mem_setup(WCNSS_PAS_ID, wcnss->mem_phys, fw_size);
if (ret) {
dev_err(&rproc->dev, "unable to setup memory for image\n");
return ret;
}
}
return qcom_mdt_load(rproc, fw, rproc->firmware);
}
static const struct rproc_fw_ops wcnss_fw_ops = {
.find_rsc_table = qcom_mdt_find_rsc_table,
.load = wcnss_load,
};
static void wcnss_indicate_nv_download(struct qcom_wcnss *wcnss)
{
u32 val;
/* Indicate NV download capability */
val = readl(wcnss->spare_out);
val |= WCNSS_SPARE_NVBIN_DLND;
writel(val, wcnss->spare_out);
}
static void wcnss_configure_iris(struct qcom_wcnss *wcnss)
{
u32 val;
/* Clear PMU cfg register */
writel(0, wcnss->pmu_cfg);
val = WCNSS_PMU_GC_BUS_MUX_SEL_TOP | WCNSS_PMU_IRIS_XO_EN;
writel(val, wcnss->pmu_cfg);
/* Clear XO_MODE */
val &= ~WCNSS_PMU_XO_MODE_MASK;
if (wcnss->use_48mhz_xo)
val |= WCNSS_PMU_XO_MODE_48 << 1;
else
val |= WCNSS_PMU_XO_MODE_19p2 << 1;
writel(val, wcnss->pmu_cfg);
/* Reset IRIS */
val |= WCNSS_PMU_IRIS_RESET;
writel(val, wcnss->pmu_cfg);
/* Wait for PMU.iris_reg_reset_sts */
while (readl(wcnss->pmu_cfg) & WCNSS_PMU_IRIS_RESET_STS)
cpu_relax();
/* Clear IRIS reset */
val &= ~WCNSS_PMU_IRIS_RESET;
writel(val, wcnss->pmu_cfg);
/* Start IRIS XO configuration */
val |= WCNSS_PMU_IRIS_XO_CFG;
writel(val, wcnss->pmu_cfg);
/* Wait for XO configuration to finish */
while (readl(wcnss->pmu_cfg) & WCNSS_PMU_IRIS_XO_CFG_STS)
cpu_relax();
/* Stop IRIS XO configuration */
val &= ~WCNSS_PMU_GC_BUS_MUX_SEL_TOP;
val &= ~WCNSS_PMU_IRIS_XO_CFG;
writel(val, wcnss->pmu_cfg);
/* Add some delay for XO to settle */
msleep(20);
}
static int wcnss_start(struct rproc *rproc)
{
struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
int ret;
mutex_lock(&wcnss->iris_lock);
if (!wcnss->iris) {
dev_err(wcnss->dev, "no iris registered\n");
ret = -EINVAL;
goto release_iris_lock;
}
ret = regulator_bulk_enable(wcnss->num_vregs, wcnss->vregs);
if (ret)
goto release_iris_lock;
ret = qcom_iris_enable(wcnss->iris);
if (ret)
goto disable_regulators;
wcnss_indicate_nv_download(wcnss);
wcnss_configure_iris(wcnss);
ret = qcom_scm_pas_auth_and_reset(WCNSS_PAS_ID);
if (ret) {
dev_err(wcnss->dev,
"failed to authenticate image and release reset\n");
goto disable_iris;
}
ret = wait_for_completion_timeout(&wcnss->start_done,
msecs_to_jiffies(5000));
if (wcnss->ready_irq > 0 && ret == 0) {
/* We have a ready_irq, but it didn't fire in time. */
dev_err(wcnss->dev, "start timed out\n");
qcom_scm_pas_shutdown(WCNSS_PAS_ID);
ret = -ETIMEDOUT;
goto disable_iris;
}
ret = 0;
disable_iris:
qcom_iris_disable(wcnss->iris);
disable_regulators:
regulator_bulk_disable(wcnss->num_vregs, wcnss->vregs);
release_iris_lock:
mutex_unlock(&wcnss->iris_lock);
return ret;
}
static int wcnss_stop(struct rproc *rproc)
{
struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
int ret;
if (wcnss->state) {
qcom_smem_state_update_bits(wcnss->state,
BIT(wcnss->stop_bit),
BIT(wcnss->stop_bit));
ret = wait_for_completion_timeout(&wcnss->stop_done,
msecs_to_jiffies(5000));
if (ret == 0)
dev_err(wcnss->dev, "timed out on wait\n");
qcom_smem_state_update_bits(wcnss->state,
BIT(wcnss->stop_bit),
0);
}
ret = qcom_scm_pas_shutdown(WCNSS_PAS_ID);
if (ret)
dev_err(wcnss->dev, "failed to shutdown: %d\n", ret);
return ret;
}
static void *wcnss_da_to_va(struct rproc *rproc, u64 da, int len)
{
struct qcom_wcnss *wcnss = (struct qcom_wcnss *)rproc->priv;
int offset;
offset = da - wcnss->mem_reloc;
if (offset < 0 || offset + len > wcnss->mem_size)
return NULL;
return wcnss->mem_region + offset;
}
static const struct rproc_ops wcnss_ops = {
.start = wcnss_start,
.stop = wcnss_stop,
.da_to_va = wcnss_da_to_va,
};
static irqreturn_t wcnss_wdog_interrupt(int irq, void *dev)
{
struct qcom_wcnss *wcnss = dev;
rproc_report_crash(wcnss->rproc, RPROC_WATCHDOG);
return IRQ_HANDLED;
}
static irqreturn_t wcnss_fatal_interrupt(int irq, void *dev)
{
struct qcom_wcnss *wcnss = dev;
size_t len;
char *msg;
msg = qcom_smem_get(QCOM_SMEM_HOST_ANY, WCNSS_CRASH_REASON_SMEM, &len);
if (!IS_ERR(msg) && len > 0 && msg[0])
dev_err(wcnss->dev, "fatal error received: %s\n", msg);
rproc_report_crash(wcnss->rproc, RPROC_FATAL_ERROR);
if (!IS_ERR(msg))
msg[0] = '\0';
return IRQ_HANDLED;
}
static irqreturn_t wcnss_ready_interrupt(int irq, void *dev)
{
struct qcom_wcnss *wcnss = dev;
complete(&wcnss->start_done);
return IRQ_HANDLED;
}
static irqreturn_t wcnss_handover_interrupt(int irq, void *dev)
{
/*
* XXX: At this point we're supposed to release the resources that we
* have been holding on behalf of the WCNSS. Unfortunately this
* interrupt comes way before the other side seems to be done.
*
* So we're currently relying on the ready interrupt firing later then
* this and we just disable the resources at the end of wcnss_start().
*/
return IRQ_HANDLED;
}
static irqreturn_t wcnss_stop_ack_interrupt(int irq, void *dev)
{
struct qcom_wcnss *wcnss = dev;
complete(&wcnss->stop_done);
return IRQ_HANDLED;
}
static int wcnss_init_regulators(struct qcom_wcnss *wcnss,
const struct wcnss_vreg_info *info,
int num_vregs)
{
struct regulator_bulk_data *bulk;
int ret;
int i;
bulk = devm_kcalloc(wcnss->dev,
num_vregs, sizeof(struct regulator_bulk_data),
GFP_KERNEL);
if (!bulk)
return -ENOMEM;
for (i = 0; i < num_vregs; i++)
bulk[i].supply = info[i].name;
ret = devm_regulator_bulk_get(wcnss->dev, num_vregs, bulk);
if (ret)
return ret;
for (i = 0; i < num_vregs; i++) {
if (info[i].max_voltage)
regulator_set_voltage(bulk[i].consumer,
info[i].min_voltage,
info[i].max_voltage);
if (info[i].load_uA)
regulator_set_load(bulk[i].consumer, info[i].load_uA);
}
wcnss->vregs = bulk;
wcnss->num_vregs = num_vregs;
return 0;
}
static int wcnss_request_irq(struct qcom_wcnss *wcnss,
struct platform_device *pdev,
const char *name,
bool optional,
irq_handler_t thread_fn)
{
int ret;
ret = platform_get_irq_byname(pdev, name);
if (ret < 0 && optional) {
dev_dbg(&pdev->dev, "no %s IRQ defined, ignoring\n", name);
return 0;
} else 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_TRIGGER_RISING | IRQF_ONESHOT,
"wcnss", wcnss);
if (ret)
dev_err(&pdev->dev, "request %s IRQ failed\n", name);
return ret;
}
static int wcnss_alloc_memory_region(struct qcom_wcnss *wcnss)
{
struct device_node *node;
struct resource r;
int ret;
node = of_parse_phandle(wcnss->dev->of_node, "memory-region", 0);
if (!node) {
dev_err(wcnss->dev, "no memory-region specified\n");
return -EINVAL;
}
ret = of_address_to_resource(node, 0, &r);
if (ret)
return ret;
wcnss->mem_phys = wcnss->mem_reloc = r.start;
wcnss->mem_size = resource_size(&r);
wcnss->mem_region = devm_ioremap_wc(wcnss->dev, wcnss->mem_phys, wcnss->mem_size);
if (!wcnss->mem_region) {
dev_err(wcnss->dev, "unable to map memory region: %pa+%zx\n",
&r.start, wcnss->mem_size);
return -EBUSY;
}
return 0;
}
static int wcnss_probe(struct platform_device *pdev)
{
const struct wcnss_data *data;
struct qcom_wcnss *wcnss;
struct resource *res;
struct rproc *rproc;
void __iomem *mmio;
int ret;
data = of_device_get_match_data(&pdev->dev);
if (!qcom_scm_is_available())
return -EPROBE_DEFER;
if (!qcom_scm_pas_supported(WCNSS_PAS_ID)) {
dev_err(&pdev->dev, "PAS is not available for WCNSS\n");
return -ENXIO;
}
rproc = rproc_alloc(&pdev->dev, pdev->name, &wcnss_ops,
WCNSS_FIRMWARE_NAME, sizeof(*wcnss));
if (!rproc) {
dev_err(&pdev->dev, "unable to allocate remoteproc\n");
return -ENOMEM;
}
rproc->fw_ops = &wcnss_fw_ops;
wcnss = (struct qcom_wcnss *)rproc->priv;
wcnss->dev = &pdev->dev;
wcnss->rproc = rproc;
platform_set_drvdata(pdev, wcnss);
init_completion(&wcnss->start_done);
init_completion(&wcnss->stop_done);
mutex_init(&wcnss->iris_lock);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pmu");
mmio = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(mmio)) {
ret = PTR_ERR(mmio);
goto free_rproc;
};
ret = wcnss_alloc_memory_region(wcnss);
if (ret)
goto free_rproc;
wcnss->pmu_cfg = mmio + data->pmu_offset;
wcnss->spare_out = mmio + data->spare_offset;
ret = wcnss_init_regulators(wcnss, data->vregs, data->num_vregs);
if (ret)
goto free_rproc;
ret = wcnss_request_irq(wcnss, pdev, "wdog", false, wcnss_wdog_interrupt);
if (ret < 0)
goto free_rproc;
wcnss->wdog_irq = ret;
ret = wcnss_request_irq(wcnss, pdev, "fatal", false, wcnss_fatal_interrupt);
if (ret < 0)
goto free_rproc;
wcnss->fatal_irq = ret;
ret = wcnss_request_irq(wcnss, pdev, "ready", true, wcnss_ready_interrupt);
if (ret < 0)
goto free_rproc;
wcnss->ready_irq = ret;
ret = wcnss_request_irq(wcnss, pdev, "handover", true, wcnss_handover_interrupt);
if (ret < 0)
goto free_rproc;
wcnss->handover_irq = ret;
ret = wcnss_request_irq(wcnss, pdev, "stop-ack", true, wcnss_stop_ack_interrupt);
if (ret < 0)
goto free_rproc;
wcnss->stop_ack_irq = ret;
if (wcnss->stop_ack_irq) {
wcnss->state = qcom_smem_state_get(&pdev->dev, "stop",
&wcnss->stop_bit);
if (IS_ERR(wcnss->state)) {
ret = PTR_ERR(wcnss->state);
goto free_rproc;
}
}
ret = rproc_add(rproc);
if (ret)
goto free_rproc;
return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
free_rproc:
rproc_free(rproc);
return ret;
}
static int wcnss_remove(struct platform_device *pdev)
{
struct qcom_wcnss *wcnss = platform_get_drvdata(pdev);
of_platform_depopulate(&pdev->dev);
qcom_smem_state_put(wcnss->state);
rproc_del(wcnss->rproc);
rproc_free(wcnss->rproc);
return 0;
}
static const struct of_device_id wcnss_of_match[] = {
{ .compatible = "qcom,riva-pil", &riva_data },
{ .compatible = "qcom,pronto-v1-pil", &pronto_v1_data },
{ .compatible = "qcom,pronto-v2-pil", &pronto_v2_data },
{ },
};
static struct platform_driver wcnss_driver = {
.probe = wcnss_probe,
.remove = wcnss_remove,
.driver = {
.name = "qcom-wcnss-pil",
.of_match_table = wcnss_of_match,
},
};
module_platform_driver(wcnss_driver);
MODULE_DESCRIPTION("Qualcomm Peripherial Image Loader for Wireless Subsystem");
MODULE_LICENSE("GPL v2");

22
drivers/remoteproc/qcom_wcnss.h Normal file
View file

@ -0,0 +1,22 @@
#ifndef __QCOM_WNCSS_H__
#define __QCOM_WNCSS_H__
struct qcom_iris;
struct qcom_wcnss;
struct wcnss_vreg_info {
const char * const name;
int min_voltage;
int max_voltage;
int load_uA;
bool super_turbo;
};
int qcom_iris_enable(struct qcom_iris *iris);
void qcom_iris_disable(struct qcom_iris *iris);
void qcom_wcnss_assign_iris(struct qcom_wcnss *wcnss, struct qcom_iris *iris, bool use_48mhz_xo);
#endif

188
drivers/remoteproc/qcom_wcnss_iris.c Normal file
View file

@ -0,0 +1,188 @@
/*
* Qualcomm Wireless Connectivity Subsystem Iris driver
*
* 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/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include "qcom_wcnss.h"
struct qcom_iris {
struct device *dev;
struct clk *xo_clk;
struct regulator_bulk_data *vregs;
size_t num_vregs;
};
struct iris_data {
const struct wcnss_vreg_info *vregs;
size_t num_vregs;
bool use_48mhz_xo;
};
static const struct iris_data wcn3620_data = {
.vregs = (struct wcnss_vreg_info[]) {
{ "vddxo", 1800000, 1800000, 10000 },
{ "vddrfa", 1300000, 1300000, 100000 },
{ "vddpa", 3300000, 3300000, 515000 },
{ "vdddig", 1800000, 1800000, 10000 },
},
.num_vregs = 4,
.use_48mhz_xo = false,
};
static const struct iris_data wcn3660_data = {
.vregs = (struct wcnss_vreg_info[]) {
{ "vddxo", 1800000, 1800000, 10000 },
{ "vddrfa", 1300000, 1300000, 100000 },
{ "vddpa", 2900000, 3000000, 515000 },
{ "vdddig", 1200000, 1225000, 10000 },
},
.num_vregs = 4,
.use_48mhz_xo = true,
};
static const struct iris_data wcn3680_data = {
.vregs = (struct wcnss_vreg_info[]) {
{ "vddxo", 1800000, 1800000, 10000 },
{ "vddrfa", 1300000, 1300000, 100000 },
{ "vddpa", 3300000, 3300000, 515000 },
{ "vdddig", 1800000, 1800000, 10000 },
},
.num_vregs = 4,
.use_48mhz_xo = true,
};
int qcom_iris_enable(struct qcom_iris *iris)
{
int ret;
ret = regulator_bulk_enable(iris->num_vregs, iris->vregs);
if (ret)
return ret;
ret = clk_prepare_enable(iris->xo_clk);
if (ret) {
dev_err(iris->dev, "failed to enable xo clk\n");
goto disable_regulators;
}
return 0;
disable_regulators:
regulator_bulk_disable(iris->num_vregs, iris->vregs);
return ret;
}
EXPORT_SYMBOL_GPL(qcom_iris_enable);
void qcom_iris_disable(struct qcom_iris *iris)
{
clk_disable_unprepare(iris->xo_clk);
regulator_bulk_disable(iris->num_vregs, iris->vregs);
}
EXPORT_SYMBOL_GPL(qcom_iris_disable);
static int qcom_iris_probe(struct platform_device *pdev)
{
const struct iris_data *data;
struct qcom_wcnss *wcnss;
struct qcom_iris *iris;
int ret;
int i;
iris = devm_kzalloc(&pdev->dev, sizeof(struct qcom_iris), GFP_KERNEL);
if (!iris)
return -ENOMEM;
data = of_device_get_match_data(&pdev->dev);
wcnss = dev_get_drvdata(pdev->dev.parent);
iris->xo_clk = devm_clk_get(&pdev->dev, "xo");
if (IS_ERR(iris->xo_clk)) {
if (PTR_ERR(iris->xo_clk) != -EPROBE_DEFER)
dev_err(&pdev->dev, "failed to acquire xo clk\n");
return PTR_ERR(iris->xo_clk);
}
iris->num_vregs = data->num_vregs;
iris->vregs = devm_kcalloc(&pdev->dev,
iris->num_vregs,
sizeof(struct regulator_bulk_data),
GFP_KERNEL);
if (!iris->vregs)
return -ENOMEM;
for (i = 0; i < iris->num_vregs; i++)
iris->vregs[i].supply = data->vregs[i].name;
ret = devm_regulator_bulk_get(&pdev->dev, iris->num_vregs, iris->vregs);
if (ret) {
dev_err(&pdev->dev, "failed to get regulators\n");
return ret;
}
for (i = 0; i < iris->num_vregs; i++) {
if (data->vregs[i].max_voltage)
regulator_set_voltage(iris->vregs[i].consumer,
data->vregs[i].min_voltage,
data->vregs[i].max_voltage);
if (data->vregs[i].load_uA)
regulator_set_load(iris->vregs[i].consumer,
data->vregs[i].load_uA);
}
qcom_wcnss_assign_iris(wcnss, iris, data->use_48mhz_xo);
return 0;
}
static int qcom_iris_remove(struct platform_device *pdev)
{
struct qcom_wcnss *wcnss = dev_get_drvdata(pdev->dev.parent);
qcom_wcnss_assign_iris(wcnss, NULL, false);
return 0;
}
static const struct of_device_id iris_of_match[] = {
{ .compatible = "qcom,wcn3620", .data = &wcn3620_data },
{ .compatible = "qcom,wcn3660", .data = &wcn3660_data },
{ .compatible = "qcom,wcn3680", .data = &wcn3680_data },
{}
};
static struct platform_driver wcnss_driver = {
.probe = qcom_iris_probe,
.remove = qcom_iris_remove,
.driver = {
.name = "qcom-iris",
.of_match_table = iris_of_match,
},
};
module_platform_driver(wcnss_driver);
MODULE_DESCRIPTION("Qualcomm Wireless Subsystem Iris driver");
MODULE_LICENSE("GPL v2");

248
drivers/remoteproc/remoteproc_core.c
View file

@ -78,7 +78,7 @@ static const char *rproc_crash_to_string(enum rproc_crash_type type)
* will try to access an unmapped device address.
*/
static int rproc_iommu_fault(struct iommu_domain *domain, struct device *dev,
unsigned long iova, int flags, void *token)
unsigned long iova, int flags, void *token)
{
struct rproc *rproc = token;
@ -236,8 +236,8 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i)
}
notifyid = ret;
dev_dbg(dev, "vring%d: va %p dma %llx size %x idr %d\n", i, va,
(unsigned long long)dma, size, notifyid);
dev_dbg(dev, "vring%d: va %p dma %pad size 0x%x idr %d\n",
i, va, &dma, size, notifyid);
rvring->va = va;
rvring->dma = dma;
@ -263,19 +263,13 @@ rproc_parse_vring(struct rproc_vdev *rvdev, struct fw_rsc_vdev *rsc, int i)
struct fw_rsc_vdev_vring *vring = &rsc->vring[i];
struct rproc_vring *rvring = &rvdev->vring[i];
dev_dbg(dev, "vdev rsc: vring%d: da %x, qsz %d, align %d\n",
i, vring->da, vring->num, vring->align);
/* make sure reserved bytes are zeroes */
if (vring->reserved) {
dev_err(dev, "vring rsc has non zero reserved bytes\n");
return -EINVAL;
}
dev_dbg(dev, "vdev rsc: vring%d: da 0x%x, qsz %d, align %d\n",
i, vring->da, vring->num, vring->align);
/* verify queue size and vring alignment are sane */
if (!vring->num || !vring->align) {
dev_err(dev, "invalid qsz (%d) or alignment (%d)\n",
vring->num, vring->align);
vring->num, vring->align);
return -EINVAL;
}
@ -330,7 +324,7 @@ void rproc_free_vring(struct rproc_vring *rvring)
* Returns 0 on success, or an appropriate error code otherwise
*/
static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc,
int offset, int avail)
int offset, int avail)
{
struct device *dev = &rproc->dev;
struct rproc_vdev *rvdev;
@ -349,7 +343,7 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc,
return -EINVAL;
}
dev_dbg(dev, "vdev rsc: id %d, dfeatures %x, cfg len %d, %d vrings\n",
dev_dbg(dev, "vdev rsc: id %d, dfeatures 0x%x, cfg len %d, %d vrings\n",
rsc->id, rsc->dfeatures, rsc->config_len, rsc->num_of_vrings);
/* we currently support only two vrings per rvdev */
@ -358,7 +352,7 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc,
return -EINVAL;
}
rvdev = kzalloc(sizeof(struct rproc_vdev), GFP_KERNEL);
rvdev = kzalloc(sizeof(*rvdev), GFP_KERNEL);
if (!rvdev)
return -ENOMEM;
@ -407,7 +401,7 @@ free_rvdev:
* Returns 0 on success, or an appropriate error code otherwise
*/
static int rproc_handle_trace(struct rproc *rproc, struct fw_rsc_trace *rsc,
int offset, int avail)
int offset, int avail)
{
struct rproc_mem_entry *trace;
struct device *dev = &rproc->dev;
@ -455,8 +449,8 @@ static int rproc_handle_trace(struct rproc *rproc, struct fw_rsc_trace *rsc,
rproc->num_traces++;
dev_dbg(dev, "%s added: va %p, da 0x%x, len 0x%x\n", name, ptr,
rsc->da, rsc->len);
dev_dbg(dev, "%s added: va %p, da 0x%x, len 0x%x\n",
name, ptr, rsc->da, rsc->len);
return 0;
}
@ -487,7 +481,7 @@ static int rproc_handle_trace(struct rproc *rproc, struct fw_rsc_trace *rsc,
* are outside those ranges.
*/
static int rproc_handle_devmem(struct rproc *rproc, struct fw_rsc_devmem *rsc,
int offset, int avail)
int offset, int avail)
{
struct rproc_mem_entry *mapping;
struct device *dev = &rproc->dev;
@ -530,7 +524,7 @@ static int rproc_handle_devmem(struct rproc *rproc, struct fw_rsc_devmem *rsc,
list_add_tail(&mapping->node, &rproc->mappings);
dev_dbg(dev, "mapped devmem pa 0x%x, da 0x%x, len 0x%x\n",
rsc->pa, rsc->da, rsc->len);
rsc->pa, rsc->da, rsc->len);
return 0;
@ -558,9 +552,8 @@ out:
* pressure is important; it may have a substantial impact on performance.
*/
static int rproc_handle_carveout(struct rproc *rproc,
struct fw_rsc_carveout *rsc,
int offset, int avail)
struct fw_rsc_carveout *rsc,
int offset, int avail)
{
struct rproc_mem_entry *carveout, *mapping;
struct device *dev = &rproc->dev;
@ -579,8 +572,8 @@ static int rproc_handle_carveout(struct rproc *rproc,
return -EINVAL;
}
dev_dbg(dev, "carveout rsc: da %x, pa %x, len %x, flags %x\n",
rsc->da, rsc->pa, rsc->len, rsc->flags);
dev_dbg(dev, "carveout rsc: name: %s, da 0x%x, pa 0x%x, len 0x%x, flags 0x%x\n",
rsc->name, rsc->da, rsc->pa, rsc->len, rsc->flags);
carveout = kzalloc(sizeof(*carveout), GFP_KERNEL);
if (!carveout)
@ -588,13 +581,14 @@ static int rproc_handle_carveout(struct rproc *rproc,
va = dma_alloc_coherent(dev->parent, rsc->len, &dma, GFP_KERNEL);
if (!va) {
dev_err(dev->parent, "dma_alloc_coherent err: %d\n", rsc->len);
dev_err(dev->parent,
"failed to allocate dma memory: len 0x%x\n", rsc->len);
ret = -ENOMEM;
goto free_carv;
}
dev_dbg(dev, "carveout va %p, dma %llx, len 0x%x\n", va,
(unsigned long long)dma, rsc->len);
dev_dbg(dev, "carveout va %p, dma %pad, len 0x%x\n",
va, &dma, rsc->len);
/*
* Ok, this is non-standard.
@ -616,13 +610,12 @@ static int rproc_handle_carveout(struct rproc *rproc,
if (rproc->domain) {
mapping = kzalloc(sizeof(*mapping), GFP_KERNEL);
if (!mapping) {
dev_err(dev, "kzalloc mapping failed\n");
ret = -ENOMEM;
goto dma_free;
}
ret = iommu_map(rproc->domain, rsc->da, dma, rsc->len,
rsc->flags);
rsc->flags);
if (ret) {
dev_err(dev, "iommu_map failed: %d\n", ret);
goto free_mapping;
@ -639,8 +632,8 @@ static int rproc_handle_carveout(struct rproc *rproc,
mapping->len = rsc->len;
list_add_tail(&mapping->node, &rproc->mappings);
dev_dbg(dev, "carveout mapped 0x%x to 0x%llx\n",
rsc->da, (unsigned long long)dma);
dev_dbg(dev, "carveout mapped 0x%x to %pad\n",
rsc->da, &dma);
}
/*
@ -697,17 +690,13 @@ static rproc_handle_resource_t rproc_loading_handlers[RSC_LAST] = {
[RSC_CARVEOUT] = (rproc_handle_resource_t)rproc_handle_carveout,
[RSC_DEVMEM] = (rproc_handle_resource_t)rproc_handle_devmem,
[RSC_TRACE] = (rproc_handle_resource_t)rproc_handle_trace,
[RSC_VDEV] = NULL, /* VDEVs were handled upon registrarion */
[RSC_VDEV] = (rproc_handle_resource_t)rproc_count_vrings,
};
static rproc_handle_resource_t rproc_vdev_handler[RSC_LAST] = {
[RSC_VDEV] = (rproc_handle_resource_t)rproc_handle_vdev,
};
static rproc_handle_resource_t rproc_count_vrings_handler[RSC_LAST] = {
[RSC_VDEV] = (rproc_handle_resource_t)rproc_count_vrings,
};
/* handle firmware resource entries before booting the remote processor */
static int rproc_handle_resources(struct rproc *rproc, int len,
rproc_handle_resource_t handlers[RSC_LAST])
@ -757,6 +746,7 @@ static int rproc_handle_resources(struct rproc *rproc, int len,
static void rproc_resource_cleanup(struct rproc *rproc)
{
struct rproc_mem_entry *entry, *tmp;
struct rproc_vdev *rvdev, *rvtmp;
struct device *dev = &rproc->dev;
/* clean up debugfs trace entries */
@ -775,7 +765,7 @@ static void rproc_resource_cleanup(struct rproc *rproc)
if (unmapped != entry->len) {
/* nothing much to do besides complaining */
dev_err(dev, "failed to unmap %u/%zu\n", entry->len,
unmapped);
unmapped);
}
list_del(&entry->node);
@ -789,6 +779,10 @@ static void rproc_resource_cleanup(struct rproc *rproc)
list_del(&entry->node);
kfree(entry);
}
/* clean up remote vdev entries */
list_for_each_entry_safe(rvdev, rvtmp, &rproc->rvdevs, node)
rproc_remove_virtio_dev(rvdev);
}
/*
@ -801,9 +795,6 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
struct resource_table *table, *loaded_table;
int ret, tablesz;
if (!rproc->table_ptr)
return -ENOMEM;
ret = rproc_fw_sanity_check(rproc, fw);
if (ret)
return ret;
@ -830,9 +821,25 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
goto clean_up;
}
/* Verify that resource table in loaded fw is unchanged */
if (rproc->table_csum != crc32(0, table, tablesz)) {
dev_err(dev, "resource checksum failed, fw changed?\n");
/*
* Create a copy of the resource table. When a virtio device starts
* and calls vring_new_virtqueue() the address of the allocated vring
* will be stored in the cached_table. Before the device is started,
* cached_table will be copied into device memory.
*/
rproc->cached_table = kmemdup(table, tablesz, GFP_KERNEL);
if (!rproc->cached_table)
goto clean_up;
rproc->table_ptr = rproc->cached_table;
/* reset max_notifyid */
rproc->max_notifyid = -1;
/* look for virtio devices and register them */
ret = rproc_handle_resources(rproc, tablesz, rproc_vdev_handler);
if (ret) {
dev_err(dev, "Failed to handle vdev resources: %d\n", ret);
goto clean_up;
}
@ -840,49 +847,50 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
ret = rproc_handle_resources(rproc, tablesz, rproc_loading_handlers);
if (ret) {
dev_err(dev, "Failed to process resources: %d\n", ret);
goto clean_up;
goto clean_up_resources;
}
/* load the ELF segments to memory */
ret = rproc_load_segments(rproc, fw);
if (ret) {
dev_err(dev, "Failed to load program segments: %d\n", ret);
goto clean_up;
goto clean_up_resources;
}
/*
* The starting device has been given the rproc->cached_table as the
* resource table. The address of the vring along with the other
* allocated resources (carveouts etc) is stored in cached_table.
* In order to pass this information to the remote device we must
* copy this information to device memory.
* In order to pass this information to the remote device we must copy
* this information to device memory. We also update the table_ptr so
* that any subsequent changes will be applied to the loaded version.
*/
loaded_table = rproc_find_loaded_rsc_table(rproc, fw);
if (loaded_table)
if (loaded_table) {
memcpy(loaded_table, rproc->cached_table, tablesz);
rproc->table_ptr = loaded_table;
}
/* power up the remote processor */
ret = rproc->ops->start(rproc);
if (ret) {
dev_err(dev, "can't start rproc %s: %d\n", rproc->name, ret);
goto clean_up;
goto clean_up_resources;
}
/*
* Update table_ptr so that all subsequent vring allocations and
* virtio fields manipulation update the actual loaded resource table
* in device memory.
*/
rproc->table_ptr = loaded_table;
rproc->state = RPROC_RUNNING;
dev_info(dev, "remote processor %s is now up\n", rproc->name);
return 0;
clean_up:
clean_up_resources:
rproc_resource_cleanup(rproc);
clean_up:
kfree(rproc->cached_table);
rproc->cached_table = NULL;
rproc->table_ptr = NULL;
rproc_disable_iommu(rproc);
return ret;
}
@ -898,42 +906,11 @@ clean_up:
static void rproc_fw_config_virtio(const struct firmware *fw, void *context)
{
struct rproc *rproc = context;
struct resource_table *table;
int ret, tablesz;
if (rproc_fw_sanity_check(rproc, fw) < 0)
goto out;
/* if rproc is marked always-on, request it to boot */
if (rproc->auto_boot)
rproc_boot_nowait(rproc);
/* look for the resource table */
table = rproc_find_rsc_table(rproc, fw, &tablesz);
if (!table)
goto out;
rproc->table_csum = crc32(0, table, tablesz);
/*
* Create a copy of the resource table. When a virtio device starts
* and calls vring_new_virtqueue() the address of the allocated vring
* will be stored in the cached_table. Before the device is started,
* cached_table will be copied into devic memory.
*/
rproc->cached_table = kmemdup(table, tablesz, GFP_KERNEL);
if (!rproc->cached_table)
goto out;
rproc->table_ptr = rproc->cached_table;
/* count the number of notify-ids */
rproc->max_notifyid = -1;
ret = rproc_handle_resources(rproc, tablesz,
rproc_count_vrings_handler);
if (ret)
goto out;
/* look for virtio devices and register them */
ret = rproc_handle_resources(rproc, tablesz, rproc_vdev_handler);
out:
release_firmware(fw);
/* allow rproc_del() contexts, if any, to proceed */
complete_all(&rproc->firmware_loading_complete);
@ -969,7 +946,7 @@ static int rproc_add_virtio_devices(struct rproc *rproc)
* rproc_trigger_recovery() - recover a remoteproc
* @rproc: the remote processor
*
* The recovery is done by reseting all the virtio devices, that way all the
* The recovery is done by resetting all the virtio devices, that way all the
* rpmsg drivers will be reseted along with the remote processor making the
* remoteproc functional again.
*
@ -977,23 +954,23 @@ static int rproc_add_virtio_devices(struct rproc *rproc)
*/
int rproc_trigger_recovery(struct rproc *rproc)
{
struct rproc_vdev *rvdev, *rvtmp;
dev_err(&rproc->dev, "recovering %s\n", rproc->name);
init_completion(&rproc->crash_comp);
/* clean up remote vdev entries */
list_for_each_entry_safe(rvdev, rvtmp, &rproc->rvdevs, node)
rproc_remove_virtio_dev(rvdev);
/* shut down the remote */
/* TODO: make sure this works with rproc->power > 1 */
rproc_shutdown(rproc);
/* wait until there is no more rproc users */
wait_for_completion(&rproc->crash_comp);
/* Free the copy of the resource table */
kfree(rproc->cached_table);
/*
* boot the remote processor up again
*/
rproc_boot(rproc);
return rproc_add_virtio_devices(rproc);
return 0;
}
/**
@ -1058,20 +1035,6 @@ static int __rproc_boot(struct rproc *rproc, bool wait)
return ret;
}
/* loading a firmware is required */
if (!rproc->firmware) {
dev_err(dev, "%s: no firmware to load\n", __func__);
ret = -EINVAL;
goto unlock_mutex;
}
/* prevent underlying implementation from being removed */
if (!try_module_get(dev->parent->driver->owner)) {
dev_err(dev, "%s: can't get owner\n", __func__);
ret = -EINVAL;
goto unlock_mutex;
}
/* skip the boot process if rproc is already powered up */
if (atomic_inc_return(&rproc->power) > 1) {
ret = 0;
@ -1096,10 +1059,8 @@ static int __rproc_boot(struct rproc *rproc, bool wait)
release_firmware(firmware_p);
downref_rproc:
if (ret) {
module_put(dev->parent->driver->owner);
if (ret)
atomic_dec(&rproc->power);
}
unlock_mutex:
mutex_unlock(&rproc->lock);
return ret;
@ -1173,8 +1134,10 @@ void rproc_shutdown(struct rproc *rproc)
rproc_disable_iommu(rproc);
/* Give the next start a clean resource table */
rproc->table_ptr = rproc->cached_table;
/* Free the copy of the resource table */
kfree(rproc->cached_table);
rproc->cached_table = NULL;
rproc->table_ptr = NULL;
/* if in crash state, unlock crash handler */
if (rproc->state == RPROC_CRASHED)
@ -1186,8 +1149,6 @@ void rproc_shutdown(struct rproc *rproc)
out:
mutex_unlock(&rproc->lock);
if (!ret)
module_put(dev->parent->driver->owner);
}
EXPORT_SYMBOL(rproc_shutdown);
@ -1216,6 +1177,12 @@ struct rproc *rproc_get_by_phandle(phandle phandle)
mutex_lock(&rproc_list_mutex);
list_for_each_entry(r, &rproc_list, node) {
if (r->dev.parent && r->dev.parent->of_node == np) {
/* prevent underlying implementation from being removed */
if (!try_module_get(r->dev.parent->driver->owner)) {
dev_err(&r->dev, "can't get owner\n");
break;
}
rproc = r;
get_device(&rproc->dev);
break;
@ -1335,11 +1302,11 @@ static struct device_type rproc_type = {
* On success the new rproc is returned, and on failure, NULL.
*
* Note: _never_ directly deallocate @rproc, even if it was not registered
* yet. Instead, when you need to unroll rproc_alloc(), use rproc_put().
* yet. Instead, when you need to unroll rproc_alloc(), use rproc_free().
*/
struct rproc *rproc_alloc(struct device *dev, const char *name,
const struct rproc_ops *ops,
const char *firmware, int len)
const struct rproc_ops *ops,
const char *firmware, int len)
{
struct rproc *rproc;
char *p, *template = "rproc-%s-fw";
@ -1359,7 +1326,7 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
*/
name_len = strlen(name) + strlen(template) - 2 + 1;
rproc = kzalloc(sizeof(struct rproc) + len + name_len, GFP_KERNEL);
rproc = kzalloc(sizeof(*rproc) + len + name_len, GFP_KERNEL);
if (!rproc)
return NULL;
@ -1374,6 +1341,7 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
rproc->name = name;
rproc->ops = ops;
rproc->priv = &rproc[1];
rproc->auto_boot = true;
device_initialize(&rproc->dev);
rproc->dev.parent = dev;
@ -1413,7 +1381,22 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
EXPORT_SYMBOL(rproc_alloc);
/**
* rproc_put() - unroll rproc_alloc()
* rproc_free() - unroll rproc_alloc()
* @rproc: the remote processor handle
*
* This function decrements the rproc dev refcount.
*
* If no one holds any reference to rproc anymore, then its refcount would
* now drop to zero, and it would be freed.
*/
void rproc_free(struct rproc *rproc)
{
put_device(&rproc->dev);
}
EXPORT_SYMBOL(rproc_free);
/**
* rproc_put() - release rproc reference
* @rproc: the remote processor handle
*
* This function decrements the rproc dev refcount.
@ -1423,6 +1406,7 @@ EXPORT_SYMBOL(rproc_alloc);
*/
void rproc_put(struct rproc *rproc)
{
module_put(rproc->dev.parent->driver->owner);
put_device(&rproc->dev);
}
EXPORT_SYMBOL(rproc_put);
@ -1438,7 +1422,7 @@ EXPORT_SYMBOL(rproc_put);
*
* After rproc_del() returns, @rproc isn't freed yet, because
* of the outstanding reference created by rproc_alloc. To decrement that
* one last refcount, one still needs to call rproc_put().
* one last refcount, one still needs to call rproc_free().
*
* Returns 0 on success and -EINVAL if @rproc isn't valid.
*/
@ -1452,13 +1436,15 @@ int rproc_del(struct rproc *rproc)
/* if rproc is just being registered, wait */
wait_for_completion(&rproc->firmware_loading_complete);
/* if rproc is marked always-on, rproc_add() booted it */
/* TODO: make sure this works with rproc->power > 1 */
if (rproc->auto_boot)
rproc_shutdown(rproc);
/* clean up remote vdev entries */
list_for_each_entry_safe(rvdev, tmp, &rproc->rvdevs, node)
rproc_remove_virtio_dev(rvdev);
/* Free the copy of the resource table */
kfree(rproc->cached_table);
/* the rproc is downref'ed as soon as it's removed from the klist */
mutex_lock(&rproc_list_mutex);
list_del(&rproc->node);

20
drivers/remoteproc/remoteproc_debugfs.c
View file

@ -45,7 +45,7 @@ static struct dentry *rproc_dbg;
* as it provides very early tracing with little to no dependencies at all.
*/
static ssize_t rproc_trace_read(struct file *filp, char __user *userbuf,
size_t count, loff_t *ppos)
size_t count, loff_t *ppos)
{
struct rproc_mem_entry *trace = filp->private_data;
int len = strnlen(trace->va, trace->len);
@ -73,7 +73,7 @@ static const char * const rproc_state_string[] = {
/* expose the state of the remote processor via debugfs */
static ssize_t rproc_state_read(struct file *filp, char __user *userbuf,
size_t count, loff_t *ppos)
size_t count, loff_t *ppos)
{
struct rproc *rproc = filp->private_data;
unsigned int state;
@ -83,7 +83,7 @@ static ssize_t rproc_state_read(struct file *filp, char __user *userbuf,
state = rproc->state > RPROC_LAST ? RPROC_LAST : rproc->state;
i = scnprintf(buf, 30, "%.28s (%d)\n", rproc_state_string[state],
rproc->state);
rproc->state);
return simple_read_from_buffer(userbuf, count, ppos, buf, i);
}
@ -130,7 +130,7 @@ static const struct file_operations rproc_state_ops = {
/* expose the name of the remote processor via debugfs */
static ssize_t rproc_name_read(struct file *filp, char __user *userbuf,
size_t count, loff_t *ppos)
size_t count, loff_t *ppos)
{
struct rproc *rproc = filp->private_data;
/* need room for the name, a newline and a terminating null */
@ -230,12 +230,12 @@ void rproc_remove_trace_file(struct dentry *tfile)
}
struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
struct rproc_mem_entry *trace)
struct rproc_mem_entry *trace)
{
struct dentry *tfile;
tfile = debugfs_create_file(name, 0400, rproc->dbg_dir,
trace, &trace_rproc_ops);
tfile = debugfs_create_file(name, 0400, rproc->dbg_dir, trace,
&trace_rproc_ops);
if (!tfile) {
dev_err(&rproc->dev, "failed to create debugfs trace entry\n");
return NULL;
@ -264,11 +264,11 @@ void rproc_create_debug_dir(struct rproc *rproc)
return;
debugfs_create_file("name", 0400, rproc->dbg_dir,
rproc, &rproc_name_ops);
rproc, &rproc_name_ops);
debugfs_create_file("state", 0400, rproc->dbg_dir,
rproc, &rproc_state_ops);
rproc, &rproc_state_ops);
debugfs_create_file("recovery", 0400, rproc->dbg_dir,
rproc, &rproc_recovery_ops);
rproc, &rproc_recovery_ops);
}
void __init rproc_init_debugfs(void)

6
drivers/remoteproc/remoteproc_elf_loader.c
View file

@ -166,18 +166,18 @@ rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw)
continue;
dev_dbg(dev, "phdr: type %d da 0x%x memsz 0x%x filesz 0x%x\n",
phdr->p_type, da, memsz, filesz);
phdr->p_type, da, memsz, filesz);
if (filesz > memsz) {
dev_err(dev, "bad phdr filesz 0x%x memsz 0x%x\n",
filesz, memsz);
filesz, memsz);
ret = -EINVAL;
break;
}
if (offset + filesz > fw->size) {
dev_err(dev, "truncated fw: need 0x%x avail 0x%zx\n",
offset + filesz, fw->size);
offset + filesz, fw->size);
ret = -EINVAL;
break;
}

15
drivers/remoteproc/remoteproc_internal.h
View file

@ -36,10 +36,10 @@ struct rproc;
*/
struct rproc_fw_ops {
struct resource_table *(*find_rsc_table)(struct rproc *rproc,
const struct firmware *fw,
int *tablesz);
struct resource_table *(*find_loaded_rsc_table)(struct rproc *rproc,
const struct firmware *fw);
const struct firmware *fw,
int *tablesz);
struct resource_table *(*find_loaded_rsc_table)(
struct rproc *rproc, const struct firmware *fw);
int (*load)(struct rproc *rproc, const struct firmware *fw);
int (*sanity_check)(struct rproc *rproc, const struct firmware *fw);
u32 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
@ -57,7 +57,7 @@ void rproc_remove_virtio_dev(struct rproc_vdev *rvdev);
/* from remoteproc_debugfs.c */
void rproc_remove_trace_file(struct dentry *tfile);
struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
struct rproc_mem_entry *trace);
struct rproc_mem_entry *trace);
void rproc_delete_debug_dir(struct rproc *rproc);
void rproc_create_debug_dir(struct rproc *rproc);
void rproc_init_debugfs(void);
@ -98,7 +98,8 @@ int rproc_load_segments(struct rproc *rproc, const struct firmware *fw)
static inline
struct resource_table *rproc_find_rsc_table(struct rproc *rproc,
const struct firmware *fw, int *tablesz)
const struct firmware *fw,
int *tablesz)
{
if (rproc->fw_ops->find_rsc_table)
return rproc->fw_ops->find_rsc_table(rproc, fw, tablesz);
@ -108,7 +109,7 @@ struct resource_table *rproc_find_rsc_table(struct rproc *rproc,
static inline
struct resource_table *rproc_find_loaded_rsc_table(struct rproc *rproc,
const struct firmware *fw)
const struct firmware *fw)
{
if (rproc->fw_ops->find_loaded_rsc_table)
return rproc->fw_ops->find_loaded_rsc_table(rproc, fw);

35
drivers/remoteproc/remoteproc_virtio.c
View file

@ -69,7 +69,7 @@ irqreturn_t rproc_vq_interrupt(struct rproc *rproc, int notifyid)
EXPORT_SYMBOL(rproc_vq_interrupt);
static struct virtqueue *rp_find_vq(struct virtio_device *vdev,
unsigned id,
unsigned int id,
void (*callback)(struct virtqueue *vq),
const char *name)
{
@ -101,14 +101,14 @@ static struct virtqueue *rp_find_vq(struct virtio_device *vdev,
memset(addr, 0, size);
dev_dbg(dev, "vring%d: va %p qsz %d notifyid %d\n",
id, addr, len, rvring->notifyid);
id, addr, len, rvring->notifyid);
/*
* Create the new vq, and tell virtio we're not interested in
* the 'weak' smp barriers, since we're talking with a real device.
*/
vq = vring_new_virtqueue(id, len, rvring->align, vdev, false, addr,
rproc_virtio_notify, callback, name);
rproc_virtio_notify, callback, name);
if (!vq) {
dev_err(dev, "vring_new_virtqueue %s failed\n", name);
rproc_free_vring(rvring);
@ -136,20 +136,14 @@ static void __rproc_virtio_del_vqs(struct virtio_device *vdev)
static void rproc_virtio_del_vqs(struct virtio_device *vdev)
{
struct rproc *rproc = vdev_to_rproc(vdev);
/* power down the remote processor before deleting vqs */
rproc_shutdown(rproc);
__rproc_virtio_del_vqs(vdev);
}
static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned nvqs,
struct virtqueue *vqs[],
vq_callback_t *callbacks[],
const char * const names[])
static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned int nvqs,
struct virtqueue *vqs[],
vq_callback_t *callbacks[],
const char * const names[])
{
struct rproc *rproc = vdev_to_rproc(vdev);
int i, ret;
for (i = 0; i < nvqs; ++i) {
@ -160,13 +154,6 @@ static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned nvqs,
}
}
/* now that the vqs are all set, boot the remote processor */
ret = rproc_boot_nowait(rproc);
if (ret) {
dev_err(&rproc->dev, "rproc_boot() failed %d\n", ret);
goto error;
}
return 0;
error:
@ -239,8 +226,8 @@ static int rproc_virtio_finalize_features(struct virtio_device *vdev)
return 0;
}
static void rproc_virtio_get(struct virtio_device *vdev, unsigned offset,
void *buf, unsigned len)
static void rproc_virtio_get(struct virtio_device *vdev, unsigned int offset,
void *buf, unsigned int len)
{
struct rproc_vdev *rvdev = vdev_to_rvdev(vdev);
struct fw_rsc_vdev *rsc;
@ -257,8 +244,8 @@ static void rproc_virtio_get(struct virtio_device *vdev, unsigned offset,
memcpy(buf, cfg + offset, len);
}
static void rproc_virtio_set(struct virtio_device *vdev, unsigned offset,
const void *buf, unsigned len)
static void rproc_virtio_set(struct virtio_device *vdev, unsigned int offset,
const void *buf, unsigned int len)
{
struct rproc_vdev *rvdev = vdev_to_rvdev(vdev);
struct fw_rsc_vdev *rsc;

4
drivers/remoteproc/st_remoteproc.c
View file

@ -262,7 +262,7 @@ static int st_rproc_probe(struct platform_device *pdev)
return 0;
free_rproc:
rproc_put(rproc);
rproc_free(rproc);
return ret;
}
@ -277,7 +277,7 @@ static int st_rproc_remove(struct platform_device *pdev)
of_reserved_mem_device_release(&pdev->dev);
rproc_put(rproc);
rproc_free(rproc);
return 0;
}

4
drivers/remoteproc/ste_modem_rproc.c
View file

@ -257,7 +257,7 @@ static int sproc_drv_remove(struct platform_device *pdev)
rproc_del(sproc->rproc);
dma_free_coherent(sproc->rproc->dev.parent, SPROC_FW_SIZE,
sproc->fw_addr, sproc->fw_dma_addr);
rproc_put(sproc->rproc);
rproc_free(sproc->rproc);
mdev->drv_data = NULL;
@ -325,7 +325,7 @@ free_mem:
free_rproc:
/* Reset device data upon error */
mdev->drv_data = NULL;
rproc_put(rproc);
rproc_free(rproc);
return err;
}

6
drivers/remoteproc/wkup_m3_rproc.c
View file

@ -167,6 +167,8 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev)
goto err;
}
rproc->auto_boot = false;
wkupm3 = rproc->priv;
wkupm3->rproc = rproc;
wkupm3->pdev = pdev;
@ -206,7 +208,7 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev)
return 0;
err_put_rproc:
rproc_put(rproc);
rproc_free(rproc);
err:
pm_runtime_put_noidle(dev);
pm_runtime_disable(dev);
@ -218,7 +220,7 @@ static int wkup_m3_rproc_remove(struct platform_device *pdev)
struct rproc *rproc = platform_get_drvdata(pdev);
rproc_del(rproc);
rproc_put(rproc);
rproc_free(rproc);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);

6
include/linux/platform_data/remoteproc-omap.h
View file

@ -39,9 +39,9 @@ struct omap_rproc_pdata {
const char *firmware;
const char *mbox_name;
const struct rproc_ops *ops;
int (*device_enable) (struct platform_device *pdev);
int (*device_shutdown) (struct platform_device *pdev);
void(*set_bootaddr)(u32);
int (*device_enable)(struct platform_device *pdev);
int (*device_shutdown)(struct platform_device *pdev);
void (*set_bootaddr)(u32);
};
#if defined(CONFIG_OMAP_REMOTEPROC) || defined(CONFIG_OMAP_REMOTEPROC_MODULE)

16
include/linux/remoteproc.h
View file

@ -118,7 +118,7 @@ enum fw_resource_type {
RSC_LAST = 4,
};
#define FW_RSC_ADDR_ANY (0xFFFFFFFFFFFFFFFF)
#define FW_RSC_ADDR_ANY (-1)
/**
* struct fw_rsc_carveout - physically contiguous memory request
@ -241,7 +241,7 @@ struct fw_rsc_trace {
* @notifyid is a unique rproc-wide notify index for this vring. This notify
* index is used when kicking a remote processor, to let it know that this
* vring is triggered.
* @reserved: reserved (must be zero)
* @pa: physical address
*
* This descriptor is not a resource entry by itself; it is part of the
* vdev resource type (see below).
@ -255,7 +255,7 @@ struct fw_rsc_vdev_vring {
u32 align;
u32 num;
u32 notifyid;
u32 reserved;
u32 pa;
} __packed;
/**
@ -409,7 +409,6 @@ enum rproc_crash_type {
* @max_notifyid: largest allocated notify id.
* @table_ptr: pointer to the resource table in effect
* @cached_table: copy of the resource table
* @table_csum: checksum of the resource table
* @has_iommu: flag to indicate if remote processor is behind an MMU
*/
struct rproc {
@ -435,14 +434,14 @@ struct rproc {
struct idr notifyids;
int index;
struct work_struct crash_handler;
unsigned crash_cnt;
unsigned int crash_cnt;
struct completion crash_comp;
bool recovery_disabled;
int max_notifyid;
struct resource_table *table_ptr;
struct resource_table *cached_table;
u32 table_csum;
bool has_iommu;
bool auto_boot;
};
/* we currently support only two vrings per rvdev */
@ -489,11 +488,12 @@ struct rproc_vdev {
struct rproc *rproc_get_by_phandle(phandle phandle);
struct rproc *rproc_alloc(struct device *dev, const char *name,
const struct rproc_ops *ops,
const char *firmware, int len);
const struct rproc_ops *ops,
const char *firmware, int len);
void rproc_put(struct rproc *rproc);
int rproc_add(struct rproc *rproc);
int rproc_del(struct rproc *rproc);
void rproc_free(struct rproc *rproc);
int rproc_boot(struct rproc *rproc);
void rproc_shutdown(struct rproc *rproc);