Re: [REBASE PATCH v5 04/17] remoteproc: qcom: Remove minidump related data from qcom_common.c

From: Mukesh Ojha
Date: Fri Oct 06 2023 - 11:10:12 EST

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@xxxxxxxxxxx/

-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@xxxxxxxxxxx>
---
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(&region, 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);