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remoteproc updates for v5.18

Browse Source 
In the remoteproc core, it's now possible to mark the sysfs attributes
 read only on a per-instance basis, which is then used by the TI wkup M3
 driver. The rproc_shutdown() interface propagates errors to the caller
 and an array underflow is fixed in the debugfs interface. The
 rproc_da_to_va() API is moved to the public API to allow e.g. child
 rpmsg devices to acquire pointers to memory shared with the remote
 processor.
 
 The TI K3 R5F and DSP drivers gains support for attaching to instances
 already started by the bootloader, aka IPC-only mode.
 
 The Mediatek remoteproc driver gains support for the MT8186 SCP. The
 driver's probe function is reordered and moved to use the devres version
 of rproc_alloc() to save a few gotos. The driver's probe function is
 also transitioned to use dev_err_probe() to provide better debug
 support.
 
 Support for the Qualcomm SC7280 Wireless Subsystem (WPSS) is introduced.
 The Hexagon based remoteproc drivers gains support for voting for
 interconnect bandwidth during launch of the remote processor. The modem
 subsystem (MSS) driver gains support for probing the BAM-DMUX
 driver, which provides the network interface towards the modem on a set
 of older Qualcomm platforms.
 In addition a number a bug fixes are introduces in the Qualcomm drivers.
 
 Lastly Qualcomm ADSP DeviceTree binding is converted to YAML format, to
 allow validation of DeviceTree source files.
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Merge tag 'rproc-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux

Pull remoteproc updates from Bjorn Andersson:
 "In the remoteproc core, it's now possible to mark the sysfs attributes
  read only on a per-instance basis, which is then used by the TI wkup
  M3 driver.

  Also, the rproc_shutdown() interface propagates errors to the caller
  and an array underflow is fixed in the debugfs interface. The
  rproc_da_to_va() API is moved to the public API to allow e.g. child
  rpmsg devices to acquire pointers to memory shared with the remote
  processor.

  The TI K3 R5F and DSP drivers gains support for attaching to instances
  already started by the bootloader, aka IPC-only mode.

  The Mediatek remoteproc driver gains support for the MT8186 SCP. The
  driver's probe function is reordered and moved to use the devres
  version of rproc_alloc() to save a few gotos. The driver's probe
  function is also transitioned to use dev_err_probe() to provide better
  debug support.

  Support for the Qualcomm SC7280 Wireless Subsystem (WPSS) is
  introduced. The Hexagon based remoteproc drivers gains support for
  voting for interconnect bandwidth during launch of the remote
  processor. The modem subsystem (MSS) driver gains support for probing
  the BAM-DMUX driver, which provides the network interface towards the
  modem on a set of older Qualcomm platforms. In addition a number a bug
  fixes are introduces in the Qualcomm drivers.

  Lastly Qualcomm ADSP DeviceTree binding is converted to YAML format,
  to allow validation of DeviceTree source files"

* tag 'rproc-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux: (22 commits)
  remoteproc: qcom_q6v5_mss: Create platform device for BAM-DMUX
  remoteproc: qcom: q6v5_wpss: Add support for sc7280 WPSS
  dt-bindings: remoteproc: qcom: Add SC7280 WPSS support
  dt-bindings: remoteproc: qcom: adsp: Convert binding to YAML
  remoteproc: k3-dsp: Add support for IPC-only mode for all K3 DSPs
  remoteproc: k3-dsp: Refactor mbox request code in start
  remoteproc: k3-r5: Add support for IPC-only mode for all R5Fs
  remoteproc: k3-r5: Refactor mbox request code in start
  remoteproc: Change rproc_shutdown() to return a status
  remoteproc: qcom: q6v5: Add interconnect path proxy vote
  remoteproc: mediatek: Support mt8186 scp
  dt-bindings: remoteproc: mediatek: Add binding for mt8186 scp
  remoteproc: qcom_q6v5_mss: Fix some leaks in q6v5_alloc_memory_region
  remoteproc: qcom_wcnss: Add missing of_node_put() in wcnss_alloc_memory_region
  remoteproc: qcom: Fix missing of_node_put in adsp_alloc_memory_region
  remoteproc: move rproc_da_to_va declaration to remoteproc.h
  remoteproc: wkup_m3: Set sysfs_read_only flag
  remoteproc: Introduce sysfs_read_only flag
  remoteproc: Fix count check in rproc_coredump_write()
  remoteproc: mtk_scp: Use dev_err_probe() where possible
  ...
This commit is contained in:
Linus Torvalds 2022-03-30 10:50:48 -07:00
commit 2c54e18406
22 changed files with 1335 additions and 310 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
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@ -17,6 +17,7 @@ properties:
compatible:
enum:
- mediatek,mt8183-scp
- mediatek,mt8186-scp
- mediatek,mt8192-scp
- mediatek,mt8195-scp

140
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@ -1,140 +0,0 @@
Qualcomm Technology Inc. Hexagon v56 Peripheral Image Loader
This document defines the binding for a component that loads and boots firmware
on the Qualcomm Technology Inc. Hexagon v56 core.
- compatible:
Usage: required
Value type: <string>
Definition: must be one of:
"qcom,qcs404-cdsp-pil",
"qcom,sdm845-adsp-pil"
- reg:
Usage: required
Value type: <prop-encoded-array>
Definition: must specify the base address and size of the qdsp6ss register
- interrupts-extended:
Usage: required
Value type: <prop-encoded-array>
Definition: must list the watchdog, fatal IRQs ready, handover and
stop-ack IRQs
- interrupt-names:
Usage: required
Value type: <stringlist>
Definition: must be "wdog", "fatal", "ready", "handover", "stop-ack"
- clocks:
Usage: required
Value type: <prop-encoded-array>
Definition: List of phandles and clock specifier pairs for the Hexagon,
per clock-names below.
- clock-names:
Usage: required for SDM845 ADSP
Value type: <stringlist>
Definition: List of clock input name strings sorted in the same
order as the clocks property. Definition must have
"xo", "sway_cbcr", "lpass_ahbs_aon_cbcr",
"lpass_ahbm_aon_cbcr", "qdsp6ss_xo", "qdsp6ss_sleep"
and "qdsp6ss_core".
- clock-names:
Usage: required for QCS404 CDSP
Value type: <stringlist>
Definition: List of clock input name strings sorted in the same
order as the clocks property. Definition must have
"xo", "sway", "tbu", "bimc", "ahb_aon", "q6ss_slave",
"q6ss_master", "q6_axim".
- power-domains:
Usage: required
Value type: <phandle>
Definition: reference to cx power domain node.
- resets:
Usage: required
Value type: <phandle>
Definition: reference to the list of resets for the Hexagon.
- reset-names:
Usage: required for SDM845 ADSP
Value type: <stringlist>
Definition: must be "pdc_sync" and "cc_lpass"
- reset-names:
Usage: required for QCS404 CDSP
Value type: <stringlist>
Definition: must be "restart"
- qcom,halt-regs:
Usage: required
Value type: <prop-encoded-array>
Definition: a phandle reference to a syscon representing TCSR followed
by the offset within syscon for Hexagon halt register.
- memory-region:
Usage: required
Value type: <phandle>
Definition: reference to the reserved-memory for the firmware
- qcom,smem-states:
Usage: required
Value type: <phandle>
Definition: reference to the smem state for requesting the Hexagon to
shut down
- qcom,smem-state-names:
Usage: required
Value type: <stringlist>
Definition: must be "stop"
= SUBNODES
The adsp node may have an subnode named "glink-edge" that describes the
communication edge, channels and devices related to the Hexagon.
See ../soc/qcom/qcom,glink.txt for details on how to describe these.
= EXAMPLE
The following example describes the resources needed to boot control the
ADSP, as it is found on SDM845 boards.
remoteproc@17300000 {
compatible = "qcom,sdm845-adsp-pil";
reg = <0x17300000 0x40c>;
interrupts-extended = <&intc GIC_SPI 162 IRQ_TYPE_EDGE_RISING>,
<&adsp_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
<&adsp_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
<&adsp_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
<&adsp_smp2p_in 3 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "wdog", "fatal", "ready",
"handover", "stop-ack";
clocks = <&rpmhcc RPMH_CXO_CLK>,
<&gcc GCC_LPASS_SWAY_CLK>,
<&lpasscc LPASS_Q6SS_AHBS_AON_CLK>,
<&lpasscc LPASS_Q6SS_AHBM_AON_CLK>,
<&lpasscc LPASS_QDSP6SS_XO_CLK>,
<&lpasscc LPASS_QDSP6SS_SLEEP_CLK>,
<&lpasscc LPASS_QDSP6SS_CORE_CLK>;
clock-names = "xo", "sway_cbcr",
"lpass_ahbs_aon_cbcr",
"lpass_ahbm_aon_cbcr", "qdsp6ss_xo",
"qdsp6ss_sleep", "qdsp6ss_core";
power-domains = <&rpmhpd SDM845_CX>;
resets = <&pdc_reset PDC_AUDIO_SYNC_RESET>,
<&aoss_reset AOSS_CC_LPASS_RESTART>;
reset-names = "pdc_sync", "cc_lpass";
qcom,halt-regs = <&tcsr_mutex_regs 0x22000>;
memory-region = <&pil_adsp_mem>;
qcom,smem-states = <&adsp_smp2p_out 0>;
qcom,smem-state-names = "stop";
};

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@ -0,0 +1,161 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/remoteproc/qcom,qcs404-cdsp-pil.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm QCS404 CDSP Peripheral Image Loader
maintainers:
- Bjorn Andersson <bjorn.andersson@linaro.org>
description:
This document defines the binding for a component that loads and boots firmware
on the Qualcomm Technology Inc. CDSP (Compute DSP).
properties:
compatible:
enum:
- qcom,qcs404-cdsp-pil
reg:
maxItems: 1
description:
The base address and size of the qdsp6ss register
interrupts:
items:
- description: Watchdog interrupt
- description: Fatal interrupt
- description: Ready interrupt
- description: Handover interrupt
- description: Stop acknowledge interrupt
interrupt-names:
items:
- const: wdog
- const: fatal
- const: ready
- const: handover
- const: stop-ack
clocks:
items:
- description: XO clock
- description: SWAY clock
- description: TBU clock
- description: BIMC clock
- description: AHB AON clock
- description: Q6SS SLAVE clock
- description: Q6SS MASTER clock
- description: Q6 AXIM clock
clock-names:
items:
- const: xo
- const: sway
- const: tbu
- const: bimc
- const: ahb_aon
- const: q6ss_slave
- const: q6ss_master
- const: q6_axim
power-domains:
items:
- description: CX power domain
resets:
items:
- description: AOSS restart
reset-names:
items:
- const: restart
memory-region:
maxItems: 1
description: Reference to the reserved-memory for the Hexagon core
qcom,halt-regs:
$ref: /schemas/types.yaml#/definitions/phandle-array
description:
Phandle reference to a syscon representing TCSR followed by the
three offsets within syscon for q6, modem and nc halt registers.
qcom,smem-states:
$ref: /schemas/types.yaml#/definitions/phandle-array
description: States used by the AP to signal the Hexagon core
items:
- description: Stop the modem
qcom,smem-state-names:
$ref: /schemas/types.yaml#/definitions/string
description: The names of the state bits used for SMP2P output
items:
- const: stop
required:
- compatible
- reg
- interrupts
- interrupt-names
- clocks
- clock-names
- power-domains
- resets
- reset-names
- qcom,halt-regs
- memory-region
- qcom,smem-states
- qcom,smem-state-names
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/qcom,gcc-qcs404.h>
#include <dt-bindings/power/qcom-rpmpd.h>
#include <dt-bindings/clock/qcom,turingcc-qcs404.h>
remoteproc@b00000 {
compatible = "qcom,qcs404-cdsp-pil";
reg = <0x00b00000 0x4040>;
interrupts-extended = <&intc GIC_SPI 229 IRQ_TYPE_EDGE_RISING>,
<&cdsp_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
<&cdsp_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
<&cdsp_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
<&cdsp_smp2p_in 3 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "wdog", "fatal", "ready",
"handover", "stop-ack";
clocks = <&xo_board>,
<&gcc GCC_CDSP_CFG_AHB_CLK>,
<&gcc GCC_CDSP_TBU_CLK>,
<&gcc GCC_BIMC_CDSP_CLK>,
<&turingcc TURING_WRAPPER_AON_CLK>,
<&turingcc TURING_Q6SS_AHBS_AON_CLK>,
<&turingcc TURING_Q6SS_AHBM_AON_CLK>,
<&turingcc TURING_Q6SS_Q6_AXIM_CLK>;
clock-names = "xo",
"sway",
"tbu",
"bimc",
"ahb_aon",
"q6ss_slave",
"q6ss_master",
"q6_axim";
power-domains = <&rpmhpd SDM845_CX>;
resets = <&gcc GCC_CDSP_RESTART>;
reset-names = "restart";
qcom,halt-regs = <&tcsr 0x19004>;
memory-region = <&cdsp_fw_mem>;
qcom,smem-states = <&cdsp_smp2p_out 0>;
qcom,smem-state-names = "stop";
};

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@ -0,0 +1,219 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/remoteproc/qcom,sc7280-wpss-pil.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm SC7280 WPSS Peripheral Image Loader
maintainers:
- Bjorn Andersson <bjorn.andersson@linaro.org>
description:
This document defines the binding for a component that loads and boots firmware
on the Qualcomm Technology Inc. WPSS.
properties:
compatible:
enum:
- qcom,sc7280-wpss-pil
reg:
maxItems: 1
description:
The base address and size of the qdsp6ss register
interrupts:
items:
- description: Watchdog interrupt
- description: Fatal interrupt
- description: Ready interrupt
- description: Handover interrupt
- description: Stop acknowledge interrupt
- description: Shutdown acknowledge interrupt
interrupt-names:
items:
- const: wdog
- const: fatal
- const: ready
- const: handover
- const: stop-ack
- const: shutdown-ack
clocks:
items:
- description: GCC WPSS AHB BDG Master clock
- description: GCC WPSS AHB clock
- description: GCC WPSS RSCP clock
- description: XO clock
clock-names:
items:
- const: ahb_bdg
- const: ahb
- const: rscp
- const: xo
power-domains:
items:
- description: CX power domain
- description: MX power domain
power-domain-names:
items:
- const: cx
- const: mx
resets:
items:
- description: AOSS restart
- description: PDC SYNC
reset-names:
items:
- const: restart
- const: pdc_sync
memory-region:
$ref: /schemas/types.yaml#/definitions/phandle
description: Reference to the reserved-memory for the Hexagon core
firmware-name:
$ref: /schemas/types.yaml#/definitions/string
description:
The name of the firmware which should be loaded for this remote
processor.
qcom,halt-regs:
$ref: /schemas/types.yaml#/definitions/phandle-array
description:
Phandle reference to a syscon representing TCSR followed by the
three offsets within syscon for q6, modem and nc halt registers.
qcom,qmp:
$ref: /schemas/types.yaml#/definitions/phandle
description: Reference to the AOSS side-channel message RAM.
qcom,smem-states:
$ref: /schemas/types.yaml#/definitions/phandle-array
description: States used by the AP to signal the Hexagon core
items:
- description: Stop the modem
qcom,smem-state-names:
$ref: /schemas/types.yaml#/definitions/string
description: The names of the state bits used for SMP2P output
items:
- const: stop
glink-edge:
type: object
description: |
Qualcomm G-Link subnode which represents communication edge, channels
and devices related to the ADSP.
properties:
interrupts:
items:
- description: IRQ from WPSS to GLINK
mboxes:
items:
- description: Mailbox for communication between APPS and WPSS
label:
description: The names of the state bits used for SMP2P output
items:
- const: wpss
qcom,remote-pid:
$ref: /schemas/types.yaml#/definitions/uint32
description: ID of the shared memory used by GLINK for communication with WPSS
maxItems: 1
required:
- interrupts
- mboxes
- label
- qcom,remote-pid
additionalProperties: false
required:
- compatible
- reg
- interrupts
- interrupt-names
- clocks
- clock-names
- power-domains
- power-domain-names
- resets
- reset-names
- qcom,halt-regs
- memory-region
- qcom,qmp
- qcom,smem-states
- qcom,smem-state-names
- glink-edge
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/qcom,gcc-sc7280.h>
#include <dt-bindings/clock/qcom,rpmh.h>
#include <dt-bindings/power/qcom-rpmpd.h>
#include <dt-bindings/reset/qcom,sdm845-aoss.h>
#include <dt-bindings/reset/qcom,sdm845-pdc.h>
#include <dt-bindings/mailbox/qcom-ipcc.h>
remoteproc@8a00000 {
compatible = "qcom,sc7280-wpss-pil";
reg = <0x08a00000 0x10000>;
interrupts-extended = <&intc GIC_SPI 587 IRQ_TYPE_EDGE_RISING>,
<&wpss_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
<&wpss_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
<&wpss_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
<&wpss_smp2p_in 3 IRQ_TYPE_EDGE_RISING>,
<&wpss_smp2p_in 7 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "wdog", "fatal", "ready", "handover",
"stop-ack", "shutdown-ack";
clocks = <&gcc GCC_WPSS_AHB_BDG_MST_CLK>,
<&gcc GCC_WPSS_AHB_CLK>,
<&gcc GCC_WPSS_RSCP_CLK>,
<&rpmhcc RPMH_CXO_CLK>;
clock-names = "ahb_bdg", "ahb",
"rscp", "xo";
power-domains = <&rpmhpd SC7280_CX>,
<&rpmhpd SC7280_MX>;
power-domain-names = "cx", "mx";
memory-region = <&wpss_mem>;
qcom,qmp = <&aoss_qmp>;
qcom,smem-states = <&wpss_smp2p_out 0>;
qcom,smem-state-names = "stop";
resets = <&aoss_reset AOSS_CC_WCSS_RESTART>,
<&pdc_reset PDC_WPSS_SYNC_RESET>;
reset-names = "restart", "pdc_sync";
qcom,halt-regs = <&tcsr_mutex 0x37000>;
glink-edge {
interrupts-extended = <&ipcc IPCC_CLIENT_WPSS
IPCC_MPROC_SIGNAL_GLINK_QMP
IRQ_TYPE_EDGE_RISING>;
mboxes = <&ipcc IPCC_CLIENT_WPSS
IPCC_MPROC_SIGNAL_GLINK_QMP>;
label = "wpss";
qcom,remote-pid = <13>;
};
};

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@ -0,0 +1,160 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/remoteproc/qcom,sdm845-adsp-pil.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm SDM845 ADSP Peripheral Image Loader
maintainers:
- Bjorn Andersson <bjorn.andersson@linaro.org>
description:
This document defines the binding for a component that loads and boots firmware
on the Qualcomm Technology Inc. ADSP.
properties:
compatible:
enum:
- qcom,sdm845-adsp-pil
reg:
maxItems: 1
description:
The base address and size of the qdsp6ss register
interrupts:
items:
- description: Watchdog interrupt
- description: Fatal interrupt
- description: Ready interrupt
- description: Handover interrupt
- description: Stop acknowledge interrupt
interrupt-names:
items:
- const: wdog
- const: fatal
- const: ready
- const: handover
- const: stop-ack
clocks:
items:
- description: XO clock
- description: SWAY clock
- description: LPASS AHBS AON clock
- description: LPASS AHBM AON clock
- description: QDSP XO clock
- description: Q6SP6SS SLEEP clock
- description: Q6SP6SS CORE clock
clock-names:
items:
- const: xo
- const: sway_cbcr
- const: lpass_ahbs_aon_cbcr
- const: lpass_ahbm_aon_cbcr
- const: qdsp6ss_xo
- const: qdsp6ss_sleep
- const: qdsp6ss_core
power-domains:
items:
- description: CX power domain
resets:
items:
- description: PDC AUDIO SYNC RESET
- description: CC LPASS restart
reset-names:
items:
- const: pdc_sync
- const: cc_lpass
memory-region:
maxItems: 1
description: Reference to the reserved-memory for the Hexagon core
qcom,halt-regs:
$ref: /schemas/types.yaml#/definitions/phandle-array
description:
Phandle reference to a syscon representing TCSR followed by the
three offsets within syscon for q6, modem and nc halt registers.
qcom,smem-states:
$ref: /schemas/types.yaml#/definitions/phandle-array
description: States used by the AP to signal the Hexagon core
items:
- description: Stop the modem
qcom,smem-state-names:
$ref: /schemas/types.yaml#/definitions/string
description: The names of the state bits used for SMP2P output
items:
- const: stop
required:
- compatible
- reg
- interrupts
- interrupt-names
- clocks
- clock-names
- power-domains
- resets
- reset-names
- qcom,halt-regs
- memory-region
- qcom,smem-states
- qcom,smem-state-names
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/qcom,rpmh.h>
#include <dt-bindings/clock/qcom,gcc-sdm845.h>
#include <dt-bindings/clock/qcom,lpass-sdm845.h>
#include <dt-bindings/power/qcom-rpmpd.h>
#include <dt-bindings/reset/qcom,sdm845-pdc.h>
#include <dt-bindings/reset/qcom,sdm845-aoss.h>
remoteproc@17300000 {
compatible = "qcom,sdm845-adsp-pil";
reg = <0x17300000 0x40c>;
interrupts-extended = <&intc GIC_SPI 162 IRQ_TYPE_EDGE_RISING>,
<&adsp_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
<&adsp_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
<&adsp_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
<&adsp_smp2p_in 3 IRQ_TYPE_EDGE_RISING>;
interrupt-names = "wdog", "fatal", "ready",
"handover", "stop-ack";
clocks = <&rpmhcc RPMH_CXO_CLK>,
<&gcc GCC_LPASS_SWAY_CLK>,
<&lpasscc LPASS_Q6SS_AHBS_AON_CLK>,
<&lpasscc LPASS_Q6SS_AHBM_AON_CLK>,
<&lpasscc LPASS_QDSP6SS_XO_CLK>,
<&lpasscc LPASS_QDSP6SS_SLEEP_CLK>,
<&lpasscc LPASS_QDSP6SS_CORE_CLK>;
clock-names = "xo", "sway_cbcr",
"lpass_ahbs_aon_cbcr",
"lpass_ahbm_aon_cbcr", "qdsp6ss_xo",
"qdsp6ss_sleep", "qdsp6ss_core";
power-domains = <&rpmhpd SDM845_CX>;
resets = <&pdc_reset PDC_AUDIO_SYNC_RESET>,
<&aoss_reset AOSS_CC_LPASS_RESTART>;
reset-names = "pdc_sync", "cc_lpass";
qcom,halt-regs = <&tcsr_mutex_regs 0x22000>;
memory-region = <&pil_adsp_mem>;
qcom,smem-states = <&adsp_smp2p_out 0>;
qcom,smem-state-names = "stop";
};

3
Documentation/staging/remoteproc.rst
View File

@ -49,13 +49,14 @@ might also consider using dev_archdata for this).
::
void rproc_shutdown(struct rproc *rproc)
int rproc_shutdown(struct rproc *rproc)
Power off a remote processor (previously booted with rproc_boot()).
In case @rproc is still being used by an additional user(s), then
this function will just decrement the power refcount and exit,
without really powering off the device.
Returns 0 on success, and an appropriate error value otherwise.
Every call to rproc_boot() must (eventually) be accompanied by a call
to rproc_shutdown(). Calling rproc_shutdown() redundantly is a bug.

3
drivers/remoteproc/mtk_common.h
View File

@ -32,6 +32,9 @@
#define MT8183_SCP_CACHESIZE_8KB BIT(8)
#define MT8183_SCP_CACHE_CON_WAYEN BIT(10)
#define MT8186_SCP_L1_SRAM_PD_P1 0x40B0
#define MT8186_SCP_L1_SRAM_PD_p2 0x40B4
#define MT8192_L2TCM_SRAM_PD_0 0x10C0
#define MT8192_L2TCM_SRAM_PD_1 0x10C4
#define MT8192_L2TCM_SRAM_PD_2 0x10C8

92
drivers/remoteproc/mtk_scp.c
View File

@ -383,6 +383,27 @@ static void mt8192_power_off_sram(void __iomem *addr)
writel(GENMASK(i, 0), addr);
}
static int mt8186_scp_before_load(struct mtk_scp *scp)
{
/* Clear SCP to host interrupt */
writel(MT8183_SCP_IPC_INT_BIT, scp->reg_base + MT8183_SCP_TO_HOST);
/* Reset clocks before loading FW */
writel(0x0, scp->reg_base + MT8183_SCP_CLK_SW_SEL);
writel(0x0, scp->reg_base + MT8183_SCP_CLK_DIV_SEL);
/* Turn on the power of SCP's SRAM before using it. Enable 1 block per time*/
mt8192_power_on_sram(scp->reg_base + MT8183_SCP_SRAM_PDN);
/* Initialize TCM before loading FW. */
writel(0x0, scp->reg_base + MT8183_SCP_L1_SRAM_PD);
writel(0x0, scp->reg_base + MT8183_SCP_TCM_TAIL_SRAM_PD);
writel(0x0, scp->reg_base + MT8186_SCP_L1_SRAM_PD_P1);
writel(0x0, scp->reg_base + MT8186_SCP_L1_SRAM_PD_p2);
return 0;
}
static int mt8192_scp_before_load(struct mtk_scp *scp)
{
/* clear SPM interrupt, SCP2SPM_IPC_CLR */
@ -756,15 +777,9 @@ static int scp_probe(struct platform_device *pdev)
char *fw_name = "scp.img";
int ret, i;
rproc = rproc_alloc(dev,
np->name,
&scp_ops,
fw_name,
sizeof(*scp));
if (!rproc) {
dev_err(dev, "unable to allocate remoteproc\n");
return -ENOMEM;
}
rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
if (!rproc)
return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
scp = (struct mtk_scp *)rproc->priv;
scp->rproc = rproc;
@ -774,46 +789,42 @@ static int scp_probe(struct platform_device *pdev)
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
scp->sram_base = devm_ioremap_resource(dev, res);
if (IS_ERR((__force void *)scp->sram_base)) {
dev_err(dev, "Failed to parse and map sram memory\n");
ret = PTR_ERR((__force void *)scp->sram_base);
goto free_rproc;
}
if (IS_ERR(scp->sram_base))
return dev_err_probe(dev, PTR_ERR(scp->sram_base),
"Failed to parse and map sram memory\n");
scp->sram_size = resource_size(res);
scp->sram_phys = res->start;
/* l1tcm is an optional memory region */
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm");
scp->l1tcm_base = devm_ioremap_resource(dev, res);
if (IS_ERR((__force void *)scp->l1tcm_base)) {
ret = PTR_ERR((__force void *)scp->l1tcm_base);
if (IS_ERR(scp->l1tcm_base)) {
ret = PTR_ERR(scp->l1tcm_base);
if (ret != -EINVAL) {
dev_err(dev, "Failed to map l1tcm memory\n");
goto free_rproc;
return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n");
}
} else {
scp->l1tcm_size = resource_size(res);
scp->l1tcm_phys = res->start;
}
mutex_init(&scp->send_lock);
for (i = 0; i < SCP_IPI_MAX; i++)
mutex_init(&scp->ipi_desc[i].lock);
scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg");
if (IS_ERR((__force void *)scp->reg_base)) {
dev_err(dev, "Failed to parse and map cfg memory\n");
ret = PTR_ERR((__force void *)scp->reg_base);
goto destroy_mutex;
}
ret = scp_map_memory_region(scp);
if (ret)
goto destroy_mutex;
if (IS_ERR(scp->reg_base))
return dev_err_probe(dev, PTR_ERR(scp->reg_base),
"Failed to parse and map cfg memory\n");
ret = scp->data->scp_clk_get(scp);
if (ret)
goto release_dev_mem;
return ret;
ret = scp_map_memory_region(scp);
if (ret)
return ret;
mutex_init(&scp->send_lock);
for (i = 0; i < SCP_IPI_MAX; i++)
mutex_init(&scp->ipi_desc[i].lock);
/* register SCP initialization IPI */
ret = scp_ipi_register(scp, SCP_IPI_INIT, scp_init_ipi_handler, scp);
@ -847,12 +858,9 @@ remove_subdev:
scp_ipi_unregister(scp, SCP_IPI_INIT);
release_dev_mem:
scp_unmap_memory_region(scp);
destroy_mutex:
for (i = 0; i < SCP_IPI_MAX; i++)
mutex_destroy(&scp->ipi_desc[i].lock);
mutex_destroy(&scp->send_lock);
free_rproc:
rproc_free(rproc);
return ret;
}
@ -887,6 +895,19 @@ static const struct mtk_scp_of_data mt8183_of_data = {
.ipi_buf_offset = 0x7bdb0,
};
static const struct mtk_scp_of_data mt8186_of_data = {
.scp_clk_get = mt8195_scp_clk_get,
.scp_before_load = mt8186_scp_before_load,
.scp_irq_handler = mt8183_scp_irq_handler,
.scp_reset_assert = mt8183_scp_reset_assert,
.scp_reset_deassert = mt8183_scp_reset_deassert,
.scp_stop = mt8183_scp_stop,
.scp_da_to_va = mt8183_scp_da_to_va,
.host_to_scp_reg = MT8183_HOST_TO_SCP,
.host_to_scp_int_bit = MT8183_HOST_IPC_INT_BIT,
.ipi_buf_offset = 0x7bdb0,
};
static const struct mtk_scp_of_data mt8192_of_data = {
.scp_clk_get = mt8192_scp_clk_get,
.scp_before_load = mt8192_scp_before_load,
@ -913,6 +934,7 @@ static const struct mtk_scp_of_data mt8195_of_data = {
static const struct of_device_id mtk_scp_of_match[] = {
{ .compatible = "mediatek,mt8183-scp", .data = &mt8183_of_data },
{ .compatible = "mediatek,mt8186-scp", .data = &mt8186_of_data },
{ .compatible = "mediatek,mt8192-scp", .data = &mt8192_of_data },
{ .compatible = "mediatek,mt8195-scp", .data = &mt8195_of_data },
{},

23
drivers/remoteproc/qcom_q6v5.c
View File

@ -8,6 +8,7 @@
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/interconnect.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/soc/qcom/qcom_aoss.h>
@ -51,9 +52,17 @@ int qcom_q6v5_prepare(struct qcom_q6v5 *q6v5)
{
int ret;
ret = q6v5_load_state_toggle(q6v5, true);
if (ret)
ret = icc_set_bw(q6v5->path, 0, UINT_MAX);
if (ret < 0) {
dev_err(q6v5->dev, "failed to set bandwidth request\n");
return ret;
}
ret = q6v5_load_state_toggle(q6v5, true);
if (ret) {
icc_set_bw(q6v5->path, 0, 0);
return ret;
}
reinit_completion(&q6v5->start_done);
reinit_completion(&q6v5->stop_done);
@ -78,6 +87,9 @@ int qcom_q6v5_unprepare(struct qcom_q6v5 *q6v5)
disable_irq(q6v5->handover_irq);
q6v5_load_state_toggle(q6v5, false);
/* Disable interconnect vote, in case handover never happened */
icc_set_bw(q6v5->path, 0, 0);
return !q6v5->handover_issued;
}
EXPORT_SYMBOL_GPL(qcom_q6v5_unprepare);
@ -160,6 +172,8 @@ static irqreturn_t q6v5_handover_interrupt(int irq, void *data)
if (q6v5->handover)
q6v5->handover(q6v5);
icc_set_bw(q6v5->path, 0, 0);
q6v5->handover_issued = true;
return IRQ_HANDLED;
@ -332,6 +346,11 @@ int qcom_q6v5_init(struct qcom_q6v5 *q6v5, struct platform_device *pdev,
return load_state ? -ENOMEM : -EINVAL;
}
q6v5->path = devm_of_icc_get(&pdev->dev, NULL);
if (IS_ERR(q6v5->path))
return dev_err_probe(&pdev->dev, PTR_ERR(q6v5->path),
"failed to acquire interconnect path\n");
return 0;
}
EXPORT_SYMBOL_GPL(qcom_q6v5_init);

3
drivers/remoteproc/qcom_q6v5.h
View File

@ -7,6 +7,7 @@
#include <linux/completion.h>
#include <linux/soc/qcom/qcom_aoss.h>
struct icc_path;
struct rproc;
struct qcom_smem_state;
struct qcom_sysmon;
@ -18,6 +19,8 @@ struct qcom_q6v5 {
struct qcom_smem_state *state;
struct qmp *qmp;
struct icc_path *path;
unsigned stop_bit;
int wdog_irq;

228
drivers/remoteproc/qcom_q6v5_adsp.c
View File

@ -32,6 +32,7 @@
/* time out value */
#define ACK_TIMEOUT 1000
#define ACK_TIMEOUT_US 1000000
#define BOOT_FSM_TIMEOUT 10000
/* mask values */
#define EVB_MASK GENMASK(27, 4)
@ -51,6 +52,8 @@
#define QDSP6SS_CORE_CBCR 0x20
#define QDSP6SS_SLEEP_CBCR 0x3c
#define QCOM_Q6V5_RPROC_PROXY_PD_MAX 3
struct adsp_pil_data {
int crash_reason_smem;
const char *firmware_name;
@ -58,9 +61,13 @@ struct adsp_pil_data {
const char *ssr_name;
const char *sysmon_name;
int ssctl_id;
bool is_wpss;
bool auto_boot;
const char **clk_ids;
int num_clks;
const char **proxy_pd_names;
const char *load_state;
};
struct qcom_adsp {
@ -93,11 +100,151 @@ struct qcom_adsp {
void *mem_region;
size_t mem_size;
struct device *proxy_pds[QCOM_Q6V5_RPROC_PROXY_PD_MAX];
size_t proxy_pd_count;
struct qcom_rproc_glink glink_subdev;
struct qcom_rproc_ssr ssr_subdev;
struct qcom_sysmon *sysmon;
int (*shutdown)(struct qcom_adsp *adsp);
};
static int qcom_rproc_pds_attach(struct device *dev, struct qcom_adsp *adsp,
const char **pd_names)
{
struct device **devs = adsp->proxy_pds;
size_t num_pds = 0;
int ret;
int i;
if (!pd_names)
return 0;
/* Handle single power domain */
if (dev->pm_domain) {
devs[0] = dev;
pm_runtime_enable(dev);
return 1;
}
while (pd_names[num_pds])
num_pds++;
if (num_pds > ARRAY_SIZE(adsp->proxy_pds))
return -E2BIG;
for (i = 0; i < num_pds; i++) {
devs[i] = dev_pm_domain_attach_by_name(dev, pd_names[i]);
if (IS_ERR_OR_NULL(devs[i])) {
ret = PTR_ERR(devs[i]) ? : -ENODATA;
goto unroll_attach;
}
}
return num_pds;
unroll_attach:
for (i--; i >= 0; i--)
dev_pm_domain_detach(devs[i], false);
return ret;
}
static void qcom_rproc_pds_detach(struct qcom_adsp *adsp, struct device **pds,
size_t pd_count)
{
struct device *dev = adsp->dev;
int i;
/* Handle single power domain */
if (dev->pm_domain && pd_count) {
pm_runtime_disable(dev);
return;
}
for (i = 0; i < pd_count; i++)
dev_pm_domain_detach(pds[i], false);
}
static int qcom_rproc_pds_enable(struct qcom_adsp *adsp, struct device **pds,
size_t pd_count)
{
int ret;
int i;
for (i = 0; i < pd_count; i++) {
dev_pm_genpd_set_performance_state(pds[i], INT_MAX);
ret = pm_runtime_get_sync(pds[i]);
if (ret < 0) {
pm_runtime_put_noidle(pds[i]);
dev_pm_genpd_set_performance_state(pds[i], 0);
goto unroll_pd_votes;
}
}
return 0;
unroll_pd_votes:
for (i--; i >= 0; i--) {
dev_pm_genpd_set_performance_state(pds[i], 0);
pm_runtime_put(pds[i]);
}
return ret;
}
static void qcom_rproc_pds_disable(struct qcom_adsp *adsp, struct device **pds,
size_t pd_count)
{
int i;
for (i = 0; i < pd_count; i++) {
dev_pm_genpd_set_performance_state(pds[i], 0);
pm_runtime_put(pds[i]);
}
}
static int qcom_wpss_shutdown(struct qcom_adsp *adsp)
{
unsigned int val;
regmap_write(adsp->halt_map, adsp->halt_lpass + LPASS_HALTREQ_REG, 1);
/* Wait for halt ACK from QDSP6 */
regmap_read_poll_timeout(adsp->halt_map,
adsp->halt_lpass + LPASS_HALTACK_REG, val,
val, 1000, ACK_TIMEOUT_US);
/* Assert the WPSS PDC Reset */
reset_control_assert(adsp->pdc_sync_reset);
/* Place the WPSS processor into reset */
reset_control_assert(adsp->restart);
/* wait after asserting subsystem restart from AOSS */
usleep_range(200, 205);
/* Remove the WPSS reset */
reset_control_deassert(adsp->restart);
/* De-assert the WPSS PDC Reset */
reset_control_deassert(adsp->pdc_sync_reset);
usleep_range(100, 105);
clk_bulk_disable_unprepare(adsp->num_clks, adsp->clks);
regmap_write(adsp->halt_map, adsp->halt_lpass + LPASS_HALTREQ_REG, 0);
/* Wait for halt ACK from QDSP6 */
regmap_read_poll_timeout(adsp->halt_map,
adsp->halt_lpass + LPASS_HALTACK_REG, val,
!val, 1000, ACK_TIMEOUT_US);
return 0;
}
static int qcom_adsp_shutdown(struct qcom_adsp *adsp)
{
unsigned long timeout;
@ -193,12 +340,10 @@ static int adsp_start(struct rproc *rproc)
if (ret)
goto disable_irqs;
dev_pm_genpd_set_performance_state(adsp->dev, INT_MAX);
ret = pm_runtime_get_sync(adsp->dev);
if (ret) {
pm_runtime_put_noidle(adsp->dev);
ret = qcom_rproc_pds_enable(adsp, adsp->proxy_pds,
adsp->proxy_pd_count);
if (ret < 0)
goto disable_xo_clk;
}
ret = clk_bulk_prepare_enable(adsp->num_clks, adsp->clks);
if (ret) {
@ -243,8 +388,7 @@ static int adsp_start(struct rproc *rproc)
disable_adsp_clks:
clk_bulk_disable_unprepare(adsp->num_clks, adsp->clks);
disable_power_domain:
dev_pm_genpd_set_performance_state(adsp->dev, 0);
pm_runtime_put(adsp->dev);
qcom_rproc_pds_disable(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
disable_xo_clk:
clk_disable_unprepare(adsp->xo);
disable_irqs:
@ -258,8 +402,7 @@ static void qcom_adsp_pil_handover(struct qcom_q6v5 *q6v5)
struct qcom_adsp *adsp = container_of(q6v5, struct qcom_adsp, q6v5);
clk_disable_unprepare(adsp->xo);
dev_pm_genpd_set_performance_state(adsp->dev, 0);
pm_runtime_put(adsp->dev);
qcom_rproc_pds_disable(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
}
static int adsp_stop(struct rproc *rproc)
@ -272,7 +415,7 @@ static int adsp_stop(struct rproc *rproc)
if (ret == -ETIMEDOUT)
dev_err(adsp->dev, "timed out on wait\n");
ret = qcom_adsp_shutdown(adsp);
ret = adsp->shutdown(adsp);
if (ret)
dev_err(adsp->dev, "failed to shutdown: %d\n", ret);
@ -408,6 +551,7 @@ static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
}
ret = of_address_to_resource(node, 0, &r);
of_node_put(node);
if (ret)
return ret;
@ -427,6 +571,7 @@ static int adsp_alloc_memory_region(struct qcom_adsp *adsp)
static int adsp_probe(struct platform_device *pdev)
{
const struct adsp_pil_data *desc;
const char *firmware_name;
struct qcom_adsp *adsp;
struct rproc *rproc;
int ret;
@ -435,12 +580,22 @@ static int adsp_probe(struct platform_device *pdev)
if (!desc)
return -EINVAL;
firmware_name = desc->firmware_name;
ret = of_property_read_string(pdev->dev.of_node, "firmware-name",
&firmware_name);
if (ret < 0 && ret != -EINVAL) {
dev_err(&pdev->dev, "unable to read firmware-name\n");
return ret;
}
rproc = rproc_alloc(&pdev->dev, pdev->name, &adsp_ops,
desc->firmware_name, sizeof(*adsp));
firmware_name, sizeof(*adsp));
if (!rproc) {
dev_err(&pdev->dev, "unable to allocate remoteproc\n");
return -ENOMEM;
}
rproc->auto_boot = desc->auto_boot;
rproc_coredump_set_elf_info(rproc, ELFCLASS32, EM_NONE);
adsp = (struct qcom_adsp *)rproc->priv;
@ -449,6 +604,11 @@ static int adsp_probe(struct platform_device *pdev)
adsp->info_name = desc->sysmon_name;
platform_set_drvdata(pdev, adsp);
if (desc->is_wpss)
adsp->shutdown = qcom_wpss_shutdown;
else
adsp->shutdown = qcom_adsp_shutdown;
ret = adsp_alloc_memory_region(adsp);
if (ret)
goto free_rproc;
@ -457,7 +617,13 @@ static int adsp_probe(struct platform_device *pdev)
if (ret)
goto free_rproc;
pm_runtime_enable(adsp->dev);
ret = qcom_rproc_pds_attach(adsp->dev, adsp,
desc->proxy_pd_names);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to attach proxy power domains\n");
goto free_rproc;
}
adsp->proxy_pd_count = ret;
ret = adsp_init_reset(adsp);
if (ret)
@ -467,8 +633,8 @@ static int adsp_probe(struct platform_device *pdev)
if (ret)
goto disable_pm;
ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem, NULL,
qcom_adsp_pil_handover);
ret = qcom_q6v5_init(&adsp->q6v5, pdev, rproc, desc->crash_reason_smem,
desc->load_state, qcom_adsp_pil_handover);
if (ret)
goto disable_pm;
@ -489,7 +655,8 @@ static int adsp_probe(struct platform_device *pdev)
return 0;
disable_pm:
pm_runtime_disable(adsp->dev);
qcom_rproc_pds_detach(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
free_rproc:
rproc_free(rproc);
@ -506,7 +673,7 @@ static int adsp_remove(struct platform_device *pdev)
qcom_remove_glink_subdev(adsp->rproc, &adsp->glink_subdev);
qcom_remove_sysmon_subdev(adsp->sysmon);
qcom_remove_ssr_subdev(adsp->rproc, &adsp->ssr_subdev);
pm_runtime_disable(adsp->dev);
qcom_rproc_pds_detach(adsp, adsp->proxy_pds, adsp->proxy_pd_count);
rproc_free(adsp->rproc);
return 0;
@ -518,11 +685,16 @@ static const struct adsp_pil_data adsp_resource_init = {
.ssr_name = "lpass",
.sysmon_name = "adsp",
.ssctl_id = 0x14,
.is_wpss = false,
.auto_boot = true,
.clk_ids = (const char*[]) {
"sway_cbcr", "lpass_ahbs_aon_cbcr", "lpass_ahbm_aon_cbcr",
"qdsp6ss_xo", "qdsp6ss_sleep", "qdsp6ss_core", NULL
},
.num_clks = 7,
.proxy_pd_names = (const char*[]) {
"cx", NULL
},
};
static const struct adsp_pil_data cdsp_resource_init = {
@ -531,15 +703,39 @@ static const struct adsp_pil_data cdsp_resource_init = {
.ssr_name = "cdsp",
.sysmon_name = "cdsp",
.ssctl_id = 0x17,
.is_wpss = false,
.auto_boot = true,
.clk_ids = (const char*[]) {
"sway", "tbu", "bimc", "ahb_aon", "q6ss_slave", "q6ss_master",
"q6_axim", NULL
},
.num_clks = 7,
.proxy_pd_names = (const char*[]) {
"cx", NULL
},
};
static const struct adsp_pil_data wpss_resource_init = {
.crash_reason_smem = 626,
.firmware_name = "wpss.mdt",
.ssr_name = "wpss",
.sysmon_name = "wpss",
.ssctl_id = 0x19,
.is_wpss = true,
.auto_boot = false,
.load_state = "wpss",
.clk_ids = (const char*[]) {
"ahb_bdg", "ahb", "rscp", NULL
},
.num_clks = 3,
.proxy_pd_names = (const char*[]) {
"cx", "mx", NULL
},
};
static const struct of_device_id adsp_of_match[] = {
{ .compatible = "qcom,qcs404-cdsp-pil", .data = &cdsp_resource_init },
{ .compatible = "qcom,sc7280-wpss-pil", .data = &wpss_resource_init },
{ .compatible = "qcom,sdm845-adsp-pil", .data = &adsp_resource_init },
{ },
};

19
drivers/remoteproc/qcom_q6v5_mss.c
View File

@ -218,6 +218,7 @@ struct q6v5 {
struct qcom_rproc_subdev smd_subdev;
struct qcom_rproc_ssr ssr_subdev;
struct qcom_sysmon *sysmon;
struct platform_device *bam_dmux;
bool need_mem_protection;
bool has_alt_reset;
bool has_mba_logs;
@ -1807,18 +1808,20 @@ static int q6v5_alloc_memory_region(struct q6v5 *qproc)
* reserved memory regions from device's memory-region property.
*/
child = of_get_child_by_name(qproc->dev->of_node, "mba");
if (!child)
if (!child) {
node = of_parse_phandle(qproc->dev->of_node,
"memory-region", 0);
else
} else {
node = of_parse_phandle(child, "memory-region", 0);
of_node_put(child);
}
ret = of_address_to_resource(node, 0, &r);
of_node_put(node);
if (ret) {
dev_err(qproc->dev, "unable to resolve mba region\n");
return ret;
}
of_node_put(node);
qproc->mba_phys = r.start;
qproc->mba_size = resource_size(&r);
@ -1829,14 +1832,15 @@ static int q6v5_alloc_memory_region(struct q6v5 *qproc)
} else {
child = of_get_child_by_name(qproc->dev->of_node, "mpss");
node = of_parse_phandle(child, "memory-region", 0);
of_node_put(child);
}
ret = of_address_to_resource(node, 0, &r);
of_node_put(node);
if (ret) {
dev_err(qproc->dev, "unable to resolve mpss region\n");
return ret;
}
of_node_put(node);
qproc->mpss_phys = qproc->mpss_reloc = r.start;
qproc->mpss_size = resource_size(&r);
@ -1847,6 +1851,7 @@ static int q6v5_alloc_memory_region(struct q6v5 *qproc)
static int q6v5_probe(struct platform_device *pdev)
{
const struct rproc_hexagon_res *desc;
struct device_node *node;
struct q6v5 *qproc;
struct rproc *rproc;
const char *mba_image;
@ -1990,6 +1995,10 @@ static int q6v5_probe(struct platform_device *pdev)
if (ret)
goto remove_sysmon_subdev;
node = of_get_compatible_child(pdev->dev.of_node, "qcom,bam-dmux");
qproc->bam_dmux = of_platform_device_create(node, NULL, &pdev->dev);
of_node_put(node);
return 0;
remove_sysmon_subdev:
@ -2011,6 +2020,8 @@ static int q6v5_remove(struct platform_device *pdev)
struct q6v5 *qproc = platform_get_drvdata(pdev);
struct rproc *rproc = qproc->rproc;
if (qproc->bam_dmux)
of_platform_device_destroy(&qproc->bam_dmux->dev, NULL);
rproc_del(rproc);
qcom_q6v5_deinit(&qproc->q6v5);

1
drivers/remoteproc/qcom_wcnss.c
View File

@ -500,6 +500,7 @@ static int wcnss_alloc_memory_region(struct qcom_wcnss *wcnss)
}
ret = of_address_to_resource(node, 0, &r);
of_node_put(node);
if (ret)
return ret;

2
drivers/remoteproc/remoteproc_cdev.c
View File

@ -42,7 +42,7 @@ static ssize_t rproc_cdev_write(struct file *filp, const char __user *buf, size_
rproc->state != RPROC_ATTACHED)
return -EINVAL;
rproc_shutdown(rproc);
ret = rproc_shutdown(rproc);
} else if (!strncmp(cmd, "detach", len)) {
if (rproc->state != RPROC_ATTACHED)
return -EINVAL;

9
drivers/remoteproc/remoteproc_core.c
View File

@ -2061,16 +2061,18 @@ EXPORT_SYMBOL(rproc_boot);
* which means that the @rproc handle stays valid even after rproc_shutdown()
* returns, and users can still use it with a subsequent rproc_boot(), if
* needed.
*
* Return: 0 on success, and an appropriate error value otherwise
*/
void rproc_shutdown(struct rproc *rproc)
int rproc_shutdown(struct rproc *rproc)
{
struct device *dev = &rproc->dev;
int ret;
int ret = 0;
ret = mutex_lock_interruptible(&rproc->lock);
if (ret) {
dev_err(dev, "can't lock rproc %s: %d\n", rproc->name, ret);
return;
return ret;
}
/* if the remote proc is still needed, bail out */
@ -2097,6 +2099,7 @@ void rproc_shutdown(struct rproc *rproc)
rproc->table_ptr = NULL;
out:
mutex_unlock(&rproc->lock);
return ret;
}
EXPORT_SYMBOL(rproc_shutdown);

2
drivers/remoteproc/remoteproc_debugfs.c
View File

@ -76,7 +76,7 @@ static ssize_t rproc_coredump_write(struct file *filp,
int ret, err = 0;
char buf[20];
if (count > sizeof(buf))
if (count < 1 || count > sizeof(buf))
return -EINVAL;
ret = copy_from_user(buf, user_buf, count);

1
drivers/remoteproc/remoteproc_internal.h
View File

@ -84,7 +84,6 @@ static inline void rproc_char_device_remove(struct rproc *rproc)
void rproc_free_vring(struct rproc_vring *rvring);
int rproc_alloc_vring(struct rproc_vdev *rvdev, int i);
void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem);
phys_addr_t rproc_va_to_pa(void *cpu_addr);
int rproc_trigger_recovery(struct rproc *rproc);

21
drivers/remoteproc/remoteproc_sysfs.c
View File

@ -206,7 +206,7 @@ static ssize_t state_store(struct device *dev,
rproc->state != RPROC_ATTACHED)
return -EINVAL;
rproc_shutdown(rproc);
ret = rproc_shutdown(rproc);
} else if (sysfs_streq(buf, "detach")) {
if (rproc->state != RPROC_ATTACHED)
return -EINVAL;
@ -230,6 +230,22 @@ static ssize_t name_show(struct device *dev, struct device_attribute *attr,
}
static DEVICE_ATTR_RO(name);
static umode_t rproc_is_visible(struct kobject *kobj, struct attribute *attr,
int n)
{
struct device *dev = kobj_to_dev(kobj);
struct rproc *rproc = to_rproc(dev);
umode_t mode = attr->mode;
if (rproc->sysfs_read_only && (attr == &dev_attr_recovery.attr ||
attr == &dev_attr_firmware.attr ||
attr == &dev_attr_state.attr ||
attr == &dev_attr_coredump.attr))
mode = 0444;
return mode;
}
static struct attribute *rproc_attrs[] = {
&dev_attr_coredump.attr,
&dev_attr_recovery.attr,
@ -240,7 +256,8 @@ static struct attribute *rproc_attrs[] = {
};
static const struct attribute_group rproc_devgroup = {
.attrs = rproc_attrs
.attrs = rproc_attrs,
.is_visible = rproc_is_visible,
};
static const struct attribute_group *rproc_devgroups[] = {

264
drivers/remoteproc/ti_k3_dsp_remoteproc.c
View File

@ -2,7 +2,7 @@
/*
* TI K3 DSP Remote Processor(s) driver
*
* Copyright (C) 2018-2020 Texas Instruments Incorporated - https://www.ti.com/
* Copyright (C) 2018-2022 Texas Instruments Incorporated - https://www.ti.com/
* Suman Anna <s-anna@ti.com>
*/
@ -216,66 +216,11 @@ lreset:
return ret;
}
/*
* The C66x DSP cores have a local reset that affects only the CPU, and a
* generic module reset that powers on the device and allows the DSP internal
* memories to be accessed while the local reset is asserted. This function is
* used to release the global reset on C66x DSPs to allow loading into the DSP
* internal RAMs. The .prepare() ops is invoked by remoteproc core before any
* firmware loading, and is followed by the .start() ops after loading to
* actually let the C66x DSP cores run.
*/
static int k3_dsp_rproc_prepare(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
int ret;
ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci,
kproc->ti_sci_id);
if (ret)
dev_err(dev, "module-reset deassert failed, cannot enable internal RAM loading, ret = %d\n",
ret);
return ret;
}
/*
* This function implements the .unprepare() ops and performs the complimentary
* operations to that of the .prepare() ops. The function is used to assert the
* global reset on applicable C66x cores. This completes the second portion of
* powering down the C66x DSP cores. The cores themselves are only halted in the
* .stop() callback through the local reset, and the .unprepare() ops is invoked
* by the remoteproc core after the remoteproc is stopped to balance the global
* reset.
*/
static int k3_dsp_rproc_unprepare(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
int ret;
ret = kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,
kproc->ti_sci_id);
if (ret)
dev_err(dev, "module-reset assert failed, ret = %d\n", ret);
return ret;
}
/*
* Power up the DSP remote processor.
*
* This function will be invoked only after the firmware for this rproc
* was loaded, parsed successfully, and all of its resource requirements
* were met.
*/
static int k3_dsp_rproc_start(struct rproc *rproc)
static int k3_dsp_rproc_request_mbox(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct mbox_client *client = &kproc->client;
struct device *dev = kproc->dev;
u32 boot_addr;
int ret;
client->dev = dev;
@ -302,9 +247,78 @@ static int k3_dsp_rproc_start(struct rproc *rproc)
ret = mbox_send_message(kproc->mbox, (void *)RP_MBOX_ECHO_REQUEST);
if (ret < 0) {
dev_err(dev, "mbox_send_message failed: %d\n", ret);
goto put_mbox;
mbox_free_channel(kproc->mbox);
return ret;
}
return 0;
}
/*
* The C66x DSP cores have a local reset that affects only the CPU, and a
* generic module reset that powers on the device and allows the DSP internal
* memories to be accessed while the local reset is asserted. This function is
* used to release the global reset on C66x DSPs to allow loading into the DSP
* internal RAMs. The .prepare() ops is invoked by remoteproc core before any
* firmware loading, and is followed by the .start() ops after loading to
* actually let the C66x DSP cores run. This callback is invoked only in
* remoteproc mode.
*/
static int k3_dsp_rproc_prepare(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
int ret;
ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci,
kproc->ti_sci_id);
if (ret)
dev_err(dev, "module-reset deassert failed, cannot enable internal RAM loading, ret = %d\n",
ret);
return ret;
}
/*
* This function implements the .unprepare() ops and performs the complimentary
* operations to that of the .prepare() ops. The function is used to assert the
* global reset on applicable C66x cores. This completes the second portion of
* powering down the C66x DSP cores. The cores themselves are only halted in the
* .stop() callback through the local reset, and the .unprepare() ops is invoked
* by the remoteproc core after the remoteproc is stopped to balance the global
* reset. This callback is invoked only in remoteproc mode.
*/
static int k3_dsp_rproc_unprepare(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
int ret;
ret = kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,
kproc->ti_sci_id);
if (ret)
dev_err(dev, "module-reset assert failed, ret = %d\n", ret);
return ret;
}
/*
* Power up the DSP remote processor.
*
* This function will be invoked only after the firmware for this rproc
* was loaded, parsed successfully, and all of its resource requirements
* were met. This callback is invoked only in remoteproc mode.
*/
static int k3_dsp_rproc_start(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
u32 boot_addr;
int ret;
ret = k3_dsp_rproc_request_mbox(rproc);
if (ret)
return ret;
boot_addr = rproc->bootaddr;
if (boot_addr & (kproc->data->boot_align_addr - 1)) {
dev_err(dev, "invalid boot address 0x%x, must be aligned on a 0x%x boundary\n",
@ -333,7 +347,7 @@ put_mbox:
* Stop the DSP remote processor.
*
* This function puts the DSP processor into reset, and finishes processing
* of any pending messages.
* of any pending messages. This callback is invoked only in remoteproc mode.
*/
static int k3_dsp_rproc_stop(struct rproc *rproc)
{
@ -346,6 +360,78 @@ static int k3_dsp_rproc_stop(struct rproc *rproc)
return 0;
}
/*
* Attach to a running DSP remote processor (IPC-only mode)
*
* This rproc attach callback only needs to request the mailbox, the remote
* processor is already booted, so there is no need to issue any TI-SCI
* commands to boot the DSP core. This callback is invoked only in IPC-only
* mode.
*/
static int k3_dsp_rproc_attach(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
int ret;
ret = k3_dsp_rproc_request_mbox(rproc);
if (ret)
return ret;
dev_info(dev, "DSP initialized in IPC-only mode\n");
return 0;
}
/*
* Detach from a running DSP remote processor (IPC-only mode)
*
* This rproc detach callback performs the opposite operation to attach callback
* and only needs to release the mailbox, the DSP core is not stopped and will
* be left to continue to run its booted firmware. This callback is invoked only
* in IPC-only mode.
*/
static int k3_dsp_rproc_detach(struct rproc *rproc)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
mbox_free_channel(kproc->mbox);
dev_info(dev, "DSP deinitialized in IPC-only mode\n");
return 0;
}
/*
* This function implements the .get_loaded_rsc_table() callback and is used
* to provide the resource table for a booted DSP in IPC-only mode. The K3 DSP
* firmwares follow a design-by-contract approach and are expected to have the
* resource table at the base of the DDR region reserved for firmware usage.
* This provides flexibility for the remote processor to be booted by different
* bootloaders that may or may not have the ability to publish the resource table
* address and size through a DT property. This callback is invoked only in
* IPC-only mode.
*/
static struct resource_table *k3_dsp_get_loaded_rsc_table(struct rproc *rproc,
size_t *rsc_table_sz)
{
struct k3_dsp_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
if (!kproc->rmem[0].cpu_addr) {
dev_err(dev, "memory-region #1 does not exist, loaded rsc table can't be found");
return ERR_PTR(-ENOMEM);
}
/*
* NOTE: The resource table size is currently hard-coded to a maximum
* of 256 bytes. The most common resource table usage for K3 firmwares
* is to only have the vdev resource entry and an optional trace entry.
* The exact size could be computed based on resource table address, but
* the hard-coded value suffices to support the IPC-only mode.
*/
*rsc_table_sz = 256;
return (struct resource_table *)kproc->rmem[0].cpu_addr;
}
/*
* Custom function to translate a DSP device address (internal RAMs only) to a
* kernel virtual address. The DSPs can access their RAMs at either an internal
@ -592,6 +678,7 @@ static int k3_dsp_rproc_probe(struct platform_device *pdev)
struct k3_dsp_rproc *kproc;
struct rproc *rproc;
const char *fw_name;
bool p_state = false;
int ret = 0;
int ret1;
@ -670,19 +757,43 @@ static int k3_dsp_rproc_probe(struct platform_device *pdev)
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 = kproc->ti_sci->ops.dev_ops.is_on(kproc->ti_sci, kproc->ti_sci_id,
NULL, &p_state);
if (ret) {
dev_err(dev, "failed to get initial state, mode cannot be determined, ret = %d\n",
ret);
goto release_mem;
}
/* configure J721E devices for either remoteproc or IPC-only mode */
if (p_state) {
dev_info(dev, "configured DSP for IPC-only mode\n");
rproc->state = RPROC_DETACHED;
/* override rproc ops with only required IPC-only mode ops */
rproc->ops->prepare = NULL;
rproc->ops->unprepare = NULL;
rproc->ops->start = NULL;
rproc->ops->stop = NULL;
rproc->ops->attach = k3_dsp_rproc_attach;
rproc->ops->detach = k3_dsp_rproc_detach;
rproc->ops->get_loaded_rsc_table = k3_dsp_get_loaded_rsc_table;
} else {
dev_info(dev, "configured DSP for remoteproc mode\n");
/*
* 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);
}
}
}
@ -717,9 +828,18 @@ free_rproc:
static int k3_dsp_rproc_remove(struct platform_device *pdev)
{
struct k3_dsp_rproc *kproc = platform_get_drvdata(pdev);
struct rproc *rproc = kproc->rproc;
struct device *dev = &pdev->dev;
int ret;
if (rproc->state == RPROC_ATTACHED) {
ret = rproc_detach(rproc);
if (ret) {
dev_err(dev, "failed to detach proc, ret = %d\n", ret);
return ret;
}
}
rproc_del(kproc->rproc);
ret = ti_sci_proc_release(kproc->tsp);

287
drivers/remoteproc/ti_k3_r5_remoteproc.c
View File

@ -2,7 +2,7 @@
/*
* TI K3 R5F (MCU) Remote Processor driver
*
* Copyright (C) 2017-2020 Texas Instruments Incorporated - https://www.ti.com/
* Copyright (C) 2017-2022 Texas Instruments Incorporated - https://www.ti.com/
* Suman Anna <s-anna@ti.com>
*/
@ -376,6 +376,44 @@ static inline int k3_r5_core_run(struct k3_r5_core *core)
0, PROC_BOOT_CTRL_FLAG_R5_CORE_HALT);
}
static int k3_r5_rproc_request_mbox(struct rproc *rproc)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct mbox_client *client = &kproc->client;
struct device *dev = kproc->dev;
int ret;
client->dev = dev;
client->tx_done = NULL;
client->rx_callback = k3_r5_rproc_mbox_callback;
client->tx_block = false;
client->knows_txdone = false;
kproc->mbox = mbox_request_channel(client, 0);
if (IS_ERR(kproc->mbox)) {
ret = -EBUSY;
dev_err(dev, "mbox_request_channel failed: %ld\n",
PTR_ERR(kproc->mbox));
return ret;
}
/*
* Ping the remote processor, this is only for sanity-sake for now;
* there is no functional effect whatsoever.
*
* Note that the reply will _not_ arrive immediately: this message
* will wait in the mailbox fifo until the remote processor is booted.
*/
ret = mbox_send_message(kproc->mbox, (void *)RP_MBOX_ECHO_REQUEST);
if (ret < 0) {
dev_err(dev, "mbox_send_message failed: %d\n", ret);
mbox_free_channel(kproc->mbox);
return ret;
}
return 0;
}
/*
* The R5F cores have controls for both a reset and a halt/run. The code
* execution from DDR requires the initial boot-strapping code to be run
@ -390,6 +428,7 @@ static inline int k3_r5_core_run(struct k3_r5_core *core)
* private to each core. Only Core0 needs to be unhalted for running the
* cluster in this mode. The function uses the same reset logic as LockStep
* mode for this (though the behavior is agnostic of the reset release order).
* This callback is invoked only in remoteproc mode.
*/
static int k3_r5_rproc_prepare(struct rproc *rproc)
{
@ -455,7 +494,8 @@ static int k3_r5_rproc_prepare(struct rproc *rproc)
* both cores. The access is made possible only with releasing the resets for
* both cores, but with only Core0 unhalted. This function re-uses the same
* reset assert logic as LockStep mode for this mode (though the behavior is
* agnostic of the reset assert order).
* agnostic of the reset assert order). This callback is invoked only in
* remoteproc mode.
*/
static int k3_r5_rproc_unprepare(struct rproc *rproc)
{
@ -489,44 +529,21 @@ static int k3_r5_rproc_unprepare(struct rproc *rproc)
*
* The Single-CPU mode on applicable SoCs (eg: AM64x) only uses Core0 to execute
* code, so only Core0 needs to be unhalted. The function uses the same logic
* flow as Split-mode for this.
* flow as Split-mode for this. This callback is invoked only in remoteproc
* mode.
*/
static int k3_r5_rproc_start(struct rproc *rproc)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct k3_r5_cluster *cluster = kproc->cluster;
struct mbox_client *client = &kproc->client;
struct device *dev = kproc->dev;
struct k3_r5_core *core;
u32 boot_addr;
int ret;
client->dev = dev;
client->tx_done = NULL;
client->rx_callback = k3_r5_rproc_mbox_callback;
client->tx_block = false;
client->knows_txdone = false;
kproc->mbox = mbox_request_channel(client, 0);
if (IS_ERR(kproc->mbox)) {
ret = -EBUSY;
dev_err(dev, "mbox_request_channel failed: %ld\n",
PTR_ERR(kproc->mbox));
ret = k3_r5_rproc_request_mbox(rproc);
if (ret)
return ret;
}
/*
* Ping the remote processor, this is only for sanity-sake for now;
* there is no functional effect whatsoever.
*
* Note that the reply will _not_ arrive immediately: this message
* will wait in the mailbox fifo until the remote processor is booted.
*/
ret = mbox_send_message(kproc->mbox, (void *)RP_MBOX_ECHO_REQUEST);
if (ret < 0) {
dev_err(dev, "mbox_send_message failed: %d\n", ret);
goto put_mbox;
}
boot_addr = rproc->bootaddr;
/* TODO: add boot_addr sanity checking */
@ -584,7 +601,8 @@ put_mbox:
* be done here, but is preferred to be done in the .unprepare() ops - this
* maintains the symmetric behavior between the .start(), .stop(), .prepare()
* and .unprepare() ops, and also balances them well between sysfs 'state'
* flow and device bind/unbind or module removal.
* flow and device bind/unbind or module removal. This callback is invoked
* only in remoteproc mode.
*/
static int k3_r5_rproc_stop(struct rproc *rproc)
{
@ -621,6 +639,78 @@ out:
return ret;
}
/*
* Attach to a running R5F remote processor (IPC-only mode)
*
* The R5F attach callback only needs to request the mailbox, the remote
* processor is already booted, so there is no need to issue any TI-SCI
* commands to boot the R5F cores in IPC-only mode. This callback is invoked
* only in IPC-only mode.
*/
static int k3_r5_rproc_attach(struct rproc *rproc)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
int ret;
ret = k3_r5_rproc_request_mbox(rproc);
if (ret)
return ret;
dev_info(dev, "R5F core initialized in IPC-only mode\n");
return 0;
}
/*
* Detach from a running R5F remote processor (IPC-only mode)
*
* The R5F detach callback performs the opposite operation to attach callback
* and only needs to release the mailbox, the R5F cores are not stopped and
* will be left in booted state in IPC-only mode. This callback is invoked
* only in IPC-only mode.
*/
static int k3_r5_rproc_detach(struct rproc *rproc)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
mbox_free_channel(kproc->mbox);
dev_info(dev, "R5F core deinitialized in IPC-only mode\n");
return 0;
}
/*
* This function implements the .get_loaded_rsc_table() callback and is used
* to provide the resource table for the booted R5F in IPC-only mode. The K3 R5F
* firmwares follow a design-by-contract approach and are expected to have the
* resource table at the base of the DDR region reserved for firmware usage.
* This provides flexibility for the remote processor to be booted by different
* bootloaders that may or may not have the ability to publish the resource table
* address and size through a DT property. This callback is invoked only in
* IPC-only mode.
*/
static struct resource_table *k3_r5_get_loaded_rsc_table(struct rproc *rproc,
size_t *rsc_table_sz)
{
struct k3_r5_rproc *kproc = rproc->priv;
struct device *dev = kproc->dev;
if (!kproc->rmem[0].cpu_addr) {
dev_err(dev, "memory-region #1 does not exist, loaded rsc table can't be found");
return ERR_PTR(-ENOMEM);
}
/*
* NOTE: The resource table size is currently hard-coded to a maximum
* of 256 bytes. The most common resource table usage for K3 firmwares
* is to only have the vdev resource entry and an optional trace entry.
* The exact size could be computed based on resource table address, but
* the hard-coded value suffices to support the IPC-only mode.
*/
*rsc_table_sz = 256;
return (struct resource_table *)kproc->rmem[0].cpu_addr;
}
/*
* Internal Memory translation helper
*
@ -1000,6 +1090,116 @@ static void k3_r5_adjust_tcm_sizes(struct k3_r5_rproc *kproc)
}
}
/*
* This function checks and configures a R5F core for IPC-only or remoteproc
* mode. The driver is configured to be in IPC-only mode for a R5F core when
* the core has been loaded and started by a bootloader. The IPC-only mode is
* detected by querying the System Firmware for reset, power on and halt status
* and ensuring that the core is running. Any incomplete steps at bootloader
* are validated and errored out.
*
* In IPC-only mode, the driver state flags for ATCM, BTCM and LOCZRAMA settings
* and cluster mode parsed originally from kernel DT are updated to reflect the
* actual values configured by bootloader. The driver internal device memory
* addresses for TCMs are also updated.
*/
static int k3_r5_rproc_configure_mode(struct k3_r5_rproc *kproc)
{
struct k3_r5_cluster *cluster = kproc->cluster;
struct k3_r5_core *core = kproc->core;
struct device *cdev = core->dev;
bool r_state = false, c_state = false;
u32 ctrl = 0, cfg = 0, stat = 0, halted = 0;
u64 boot_vec = 0;
u32 atcm_enable, btcm_enable, loczrama;
struct k3_r5_core *core0;
enum cluster_mode mode;
int ret;
core0 = list_first_entry(&cluster->cores, struct k3_r5_core, elem);
ret = core->ti_sci->ops.dev_ops.is_on(core->ti_sci, core->ti_sci_id,
&r_state, &c_state);
if (ret) {
dev_err(cdev, "failed to get initial state, mode cannot be determined, ret = %d\n",
ret);
return ret;
}
if (r_state != c_state) {
dev_warn(cdev, "R5F core may have been powered on by a different host, programmed state (%d) != actual state (%d)\n",
r_state, c_state);
}
ret = reset_control_status(core->reset);
if (ret < 0) {
dev_err(cdev, "failed to get initial local reset status, ret = %d\n",
ret);
return ret;
}
ret = ti_sci_proc_get_status(core->tsp, &boot_vec, &cfg, &ctrl,
&stat);
if (ret < 0) {
dev_err(cdev, "failed to get initial processor status, ret = %d\n",
ret);
return ret;
}
atcm_enable = cfg & PROC_BOOT_CFG_FLAG_R5_ATCM_EN ? 1 : 0;
btcm_enable = cfg & PROC_BOOT_CFG_FLAG_R5_BTCM_EN ? 1 : 0;
loczrama = cfg & PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE ? 1 : 0;
if (cluster->soc_data->single_cpu_mode) {
mode = cfg & PROC_BOOT_CFG_FLAG_R5_SINGLE_CORE ?
CLUSTER_MODE_SINGLECPU : CLUSTER_MODE_SPLIT;
} else {
mode = cfg & PROC_BOOT_CFG_FLAG_R5_LOCKSTEP ?
CLUSTER_MODE_LOCKSTEP : CLUSTER_MODE_SPLIT;
}
halted = ctrl & PROC_BOOT_CTRL_FLAG_R5_CORE_HALT;
/*
* IPC-only mode detection requires both local and module resets to
* be deasserted and R5F core to be unhalted. Local reset status is
* irrelevant if module reset is asserted (POR value has local reset
* deasserted), and is deemed as remoteproc mode
*/
if (c_state && !ret && !halted) {
dev_info(cdev, "configured R5F for IPC-only mode\n");
kproc->rproc->state = RPROC_DETACHED;
ret = 1;
/* override rproc ops with only required IPC-only mode ops */
kproc->rproc->ops->prepare = NULL;
kproc->rproc->ops->unprepare = NULL;
kproc->rproc->ops->start = NULL;
kproc->rproc->ops->stop = NULL;
kproc->rproc->ops->attach = k3_r5_rproc_attach;
kproc->rproc->ops->detach = k3_r5_rproc_detach;
kproc->rproc->ops->get_loaded_rsc_table =
k3_r5_get_loaded_rsc_table;
} else if (!c_state) {
dev_info(cdev, "configured R5F for remoteproc mode\n");
ret = 0;
} else {
dev_err(cdev, "mismatched mode: local_reset = %s, module_reset = %s, core_state = %s\n",
!ret ? "deasserted" : "asserted",
c_state ? "deasserted" : "asserted",
halted ? "halted" : "unhalted");
ret = -EINVAL;
}
/* fixup TCMs, cluster & core flags to actual values in IPC-only mode */
if (ret > 0) {
if (core == core0)
cluster->mode = mode;
core->atcm_enable = atcm_enable;
core->btcm_enable = btcm_enable;
core->loczrama = loczrama;
core->mem[0].dev_addr = loczrama ? 0 : K3_R5_TCM_DEV_ADDR;
core->mem[1].dev_addr = loczrama ? K3_R5_TCM_DEV_ADDR : 0;
}
return ret;
}
static int k3_r5_cluster_rproc_init(struct platform_device *pdev)
{
struct k3_r5_cluster *cluster = platform_get_drvdata(pdev);
@ -1009,7 +1209,7 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev)
struct device *cdev;
const char *fw_name;
struct rproc *rproc;
int ret;
int ret, ret1;
core1 = list_last_entry(&cluster->cores, struct k3_r5_core, elem);
list_for_each_entry(core, &cluster->cores, elem) {
@ -1040,6 +1240,12 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev)
kproc->rproc = rproc;
core->rproc = rproc;
ret = k3_r5_rproc_configure_mode(kproc);
if (ret < 0)
goto err_config;
if (ret)
goto init_rmem;
ret = k3_r5_rproc_configure(kproc);
if (ret) {
dev_err(dev, "initial configure failed, ret = %d\n",
@ -1047,6 +1253,7 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev)
goto err_config;
}
init_rmem:
k3_r5_adjust_tcm_sizes(kproc);
ret = k3_r5_reserved_mem_init(kproc);
@ -1071,6 +1278,15 @@ static int k3_r5_cluster_rproc_init(struct platform_device *pdev)
return 0;
err_split:
if (rproc->state == RPROC_ATTACHED) {
ret1 = rproc_detach(rproc);
if (ret1) {
dev_err(kproc->dev, "failed to detach rproc, ret = %d\n",
ret1);
return ret1;
}
}
rproc_del(rproc);
err_add:
k3_r5_reserved_mem_exit(kproc);
@ -1094,6 +1310,7 @@ static void k3_r5_cluster_rproc_exit(void *data)
struct k3_r5_rproc *kproc;
struct k3_r5_core *core;
struct rproc *rproc;
int ret;
/*
* lockstep mode and single-cpu modes have only one rproc associated
@ -1109,6 +1326,14 @@ static void k3_r5_cluster_rproc_exit(void *data)
rproc = core->rproc;
kproc = rproc->priv;
if (rproc->state == RPROC_ATTACHED) {
ret = rproc_detach(rproc);
if (ret) {
dev_err(kproc->dev, "failed to detach rproc, ret = %d\n", ret);
return;
}
}
rproc_del(rproc);
k3_r5_reserved_mem_exit(kproc);

1
drivers/remoteproc/wkup_m3_rproc.c
View File

@ -163,6 +163,7 @@ static int wkup_m3_rproc_probe(struct platform_device *pdev)
}
rproc->auto_boot = false;
rproc->sysfs_read_only = true;
wkupm3 = rproc->priv;
wkupm3->rproc = rproc;

5
include/linux/remoteproc.h
View File

@ -523,6 +523,7 @@ struct rproc_dump_segment {
* @table_sz: size of @cached_table
* @has_iommu: flag to indicate if remote processor is behind an MMU
* @auto_boot: flag to indicate if remote processor should be auto-started
* @sysfs_read_only: flag to make remoteproc sysfs files read only
* @dump_segments: list of segments in the firmware
* @nb_vdev: number of vdev currently handled by rproc
* @elf_class: firmware ELF class
@ -562,6 +563,7 @@ struct rproc {
size_t table_sz;
bool has_iommu;
bool auto_boot;
bool sysfs_read_only;
struct list_head dump_segments;
int nb_vdev;
u8 elf_class;
@ -669,10 +671,11 @@ rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, size_t len,
u32 da, const char *name, ...);
int rproc_boot(struct rproc *rproc);
void rproc_shutdown(struct rproc *rproc);
int rproc_shutdown(struct rproc *rproc);
int rproc_detach(struct rproc *rproc);
int rproc_set_firmware(struct rproc *rproc, const char *fw_name);
void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type);
void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem);
void rproc_coredump_using_sections(struct rproc *rproc);
int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size);
int rproc_coredump_add_custom_segment(struct rproc *rproc,