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Message-ID: <bb29aba3-9378-6405-5f6d-a7d77e0374ad@quicinc.com>
Date: Fri, 6 Oct 2023 20:38:52 +0530
From: Mukesh Ojha <quic_mojha@...cinc.com>
To: <corbet@....net>, <agross@...nel.org>, <andersson@...nel.org>,
<konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<keescook@...omium.org>, <tony.luck@...el.com>, <gpiccoli@...lia.com>,
<mathieu.poirier@...aro.org>, <catalin.marinas@....com>,
<will@...nel.org>, <linus.walleij@...aro.org>,
<andy.shevchenko@...il.com>, <vigneshr@...com>, <nm@...com>,
<matthias.bgg@...il.com>, <kgene@...nel.org>,
<alim.akhtar@...sung.com>, <bmasney@...hat.com>,
<quic_tsoni@...cinc.com>
CC: <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-msm@...r.kernel.org>, <linux-hardening@...r.kernel.org>,
<linux-remoteproc@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <linux-gpio@...r.kernel.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-samsung-soc@...r.kernel.org>, <kernel@...cinc.com>
Subject: Re: [REBASE PATCH v5 04/17] remoteproc: qcom: Remove minidump related
data from qcom_common.c
Hi Bjorn/Mathieu,
Patches from 2/17-4/17 is just a movement of functions to separate
config/file.
Do you think, these can be picked independently from this series ?
I can send them separately, if required.
@Bjorn: I have sent 13/17-15/17 separately [1] as it is needed
by some folks and independent from this series.
[1]
https://lore.kernel.org/all/1696440338-12561-1-git-send-email-quic_mojha@quicinc.com/
-Mukesh
On 9/11/2023 4:23 PM, Mukesh Ojha wrote:
> As minidump specific data structure and functions move under
> config QCOM_RPROC_MINIDUMP, so remove minidump specific data
> from driver/remoteproc/qcom_common.c .
>
> Signed-off-by: Mukesh Ojha <quic_mojha@...cinc.com>
> ---
> drivers/remoteproc/qcom_common.c | 160 ---------------------------------------
> 1 file changed, 160 deletions(-)
>
> diff --git a/drivers/remoteproc/qcom_common.c b/drivers/remoteproc/qcom_common.c
> index 03e5f5d533eb..085fd73fa23a 100644
> --- a/drivers/remoteproc/qcom_common.c
> +++ b/drivers/remoteproc/qcom_common.c
> @@ -17,7 +17,6 @@
> #include <linux/rpmsg/qcom_smd.h>
> #include <linux/slab.h>
> #include <linux/soc/qcom/mdt_loader.h>
> -#include <linux/soc/qcom/smem.h>
>
> #include "remoteproc_internal.h"
> #include "qcom_common.h"
> @@ -26,61 +25,6 @@
> #define to_smd_subdev(d) container_of(d, struct qcom_rproc_subdev, subdev)
> #define to_ssr_subdev(d) container_of(d, struct qcom_rproc_ssr, subdev)
>
> -#define MAX_NUM_OF_SS 10
> -#define MAX_REGION_NAME_LENGTH 16
> -#define SBL_MINIDUMP_SMEM_ID 602
> -#define MINIDUMP_REGION_VALID ('V' << 24 | 'A' << 16 | 'L' << 8 | 'I' << 0)
> -#define MINIDUMP_SS_ENCR_DONE ('D' << 24 | 'O' << 16 | 'N' << 8 | 'E' << 0)
> -#define MINIDUMP_SS_ENABLED ('E' << 24 | 'N' << 16 | 'B' << 8 | 'L' << 0)
> -
> -/**
> - * struct minidump_region - Minidump region
> - * @name : Name of the region to be dumped
> - * @seq_num: : Use to differentiate regions with same name.
> - * @valid : This entry to be dumped (if set to 1)
> - * @address : Physical address of region to be dumped
> - * @size : Size of the region
> - */
> -struct minidump_region {
> - char name[MAX_REGION_NAME_LENGTH];
> - __le32 seq_num;
> - __le32 valid;
> - __le64 address;
> - __le64 size;
> -};
> -
> -/**
> - * struct minidump_subsystem - Subsystem's SMEM Table of content
> - * @status : Subsystem toc init status
> - * @enabled : if set to 1, this region would be copied during coredump
> - * @encryption_status: Encryption status for this subsystem
> - * @encryption_required : Decides to encrypt the subsystem regions or not
> - * @region_count : Number of regions added in this subsystem toc
> - * @regions_baseptr : regions base pointer of the subsystem
> - */
> -struct minidump_subsystem {
> - __le32 status;
> - __le32 enabled;
> - __le32 encryption_status;
> - __le32 encryption_required;
> - __le32 region_count;
> - __le64 regions_baseptr;
> -};
> -
> -/**
> - * struct minidump_global_toc - Global Table of Content
> - * @status : Global Minidump init status
> - * @md_revision : Minidump revision
> - * @enabled : Minidump enable status
> - * @subsystems : Array of subsystems toc
> - */
> -struct minidump_global_toc {
> - __le32 status;
> - __le32 md_revision;
> - __le32 enabled;
> - struct minidump_subsystem subsystems[MAX_NUM_OF_SS];
> -};
> -
> struct qcom_ssr_subsystem {
> const char *name;
> struct srcu_notifier_head notifier_list;
> @@ -90,110 +34,6 @@ struct qcom_ssr_subsystem {
> static LIST_HEAD(qcom_ssr_subsystem_list);
> static DEFINE_MUTEX(qcom_ssr_subsys_lock);
>
> -static void qcom_minidump_cleanup(struct rproc *rproc)
> -{
> - struct rproc_dump_segment *entry, *tmp;
> -
> - list_for_each_entry_safe(entry, tmp, &rproc->dump_segments, node) {
> - list_del(&entry->node);
> - kfree(entry->priv);
> - kfree(entry);
> - }
> -}
> -
> -static int qcom_add_minidump_segments(struct rproc *rproc, struct minidump_subsystem *subsystem,
> - void (*rproc_dumpfn_t)(struct rproc *rproc, struct rproc_dump_segment *segment,
> - void *dest, size_t offset, size_t size))
> -{
> - struct minidump_region __iomem *ptr;
> - struct minidump_region region;
> - int seg_cnt, i;
> - dma_addr_t da;
> - size_t size;
> - char *name;
> -
> - if (WARN_ON(!list_empty(&rproc->dump_segments))) {
> - dev_err(&rproc->dev, "dump segment list already populated\n");
> - return -EUCLEAN;
> - }
> -
> - seg_cnt = le32_to_cpu(subsystem->region_count);
> - ptr = ioremap((unsigned long)le64_to_cpu(subsystem->regions_baseptr),
> - seg_cnt * sizeof(struct minidump_region));
> - if (!ptr)
> - return -EFAULT;
> -
> - for (i = 0; i < seg_cnt; i++) {
> - memcpy_fromio(®ion, ptr + i, sizeof(region));
> - if (le32_to_cpu(region.valid) == MINIDUMP_REGION_VALID) {
> - name = kstrndup(region.name, MAX_REGION_NAME_LENGTH - 1, GFP_KERNEL);
> - if (!name) {
> - iounmap(ptr);
> - return -ENOMEM;
> - }
> - da = le64_to_cpu(region.address);
> - size = le64_to_cpu(region.size);
> - rproc_coredump_add_custom_segment(rproc, da, size, rproc_dumpfn_t, name);
> - }
> - }
> -
> - iounmap(ptr);
> - return 0;
> -}
> -
> -void qcom_minidump(struct rproc *rproc, unsigned int minidump_id,
> - void (*rproc_dumpfn_t)(struct rproc *rproc,
> - struct rproc_dump_segment *segment, void *dest, size_t offset,
> - size_t size))
> -{
> - int ret;
> - struct minidump_subsystem *subsystem;
> - struct minidump_global_toc *toc;
> -
> - /* Get Global minidump ToC*/
> - toc = qcom_smem_get(QCOM_SMEM_HOST_ANY, SBL_MINIDUMP_SMEM_ID, NULL);
> -
> - /* check if global table pointer exists and init is set */
> - if (IS_ERR(toc) || !toc->status) {
> - dev_err(&rproc->dev, "Minidump TOC not found in SMEM\n");
> - return;
> - }
> -
> - /* Get subsystem table of contents using the minidump id */
> - subsystem = &toc->subsystems[minidump_id];
> -
> - /**
> - * Collect minidump if SS ToC is valid and segment table
> - * is initialized in memory and encryption status is set.
> - */
> - if (subsystem->regions_baseptr == 0 ||
> - le32_to_cpu(subsystem->status) != 1 ||
> - le32_to_cpu(subsystem->enabled) != MINIDUMP_SS_ENABLED) {
> - return rproc_coredump(rproc);
> - }
> -
> - if (le32_to_cpu(subsystem->encryption_status) != MINIDUMP_SS_ENCR_DONE) {
> - dev_err(&rproc->dev, "Minidump not ready, skipping\n");
> - return;
> - }
> -
> - /**
> - * Clear out the dump segments populated by parse_fw before
> - * re-populating them with minidump segments.
> - */
> - rproc_coredump_cleanup(rproc);
> -
> - ret = qcom_add_minidump_segments(rproc, subsystem, rproc_dumpfn_t);
> - if (ret) {
> - dev_err(&rproc->dev, "Failed with error: %d while adding minidump entries\n", ret);
> - goto clean_minidump;
> - }
> - rproc_coredump_using_sections(rproc);
> -clean_minidump:
> - qcom_minidump_cleanup(rproc);
> -}
> -EXPORT_SYMBOL_GPL(qcom_minidump);
> -
> static int glink_subdev_start(struct rproc_subdev *subdev)
> {
> struct qcom_rproc_glink *glink = to_glink_subdev(subdev);
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