On 14/04/2023 12:49, Mukesh Ojha wrote:
On 4/14/2023 5:10 PM, Srinivas Kandagatla wrote:
On 14/04/2023 12:14, Mukesh Ojha wrote:
On 4/14/2023 4:14 PM, Srinivas Kandagatla wrote:
On 22/03/2023 13:30, Mukesh Ojha wrote:
qcom_minidump driver provides qcom_minidump_subsystem_desc()
exported API which other driver can use it query subsystem
descriptor. Refactor qcom_minidump() to use this symbol.
Signed-off-by: Mukesh Ojha <quic_mojha@xxxxxxxxxxx>
---
drivers/remoteproc/qcom_common.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/remoteproc/qcom_common.c
b/drivers/remoteproc/qcom_common.c
index 88fc984..240e9f7 100644
--- a/drivers/remoteproc/qcom_common.c
+++ b/drivers/remoteproc/qcom_common.c
@@ -94,19 +94,10 @@ void qcom_minidump(struct rproc *rproc,
unsigned int minidump_id,
{
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");
+ subsystem = qcom_minidump_subsystem_desc(minidump_id);
+ if (IS_ERR(subsystem))
return;
Sorry If I am missing something but I got lost looking at the below
code snippet in drivers/remoteproc/qcom_common.c
-------------------->cut<-----------------------------
subsystem = qcom_minidump_subsystem_desc(minidump_id);
if (IS_ERR(subsystem))
return;
/**
* 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 ||
le32_to_cpu(subsystem->encryption_status) !=
MINIDUMP_SS_ENCR_DONE) {
dev_err(&rproc->dev, "Minidump not ready, skipping\n");
return;
}
-------------------->cut<-----------------------------
where does "subsystem->regions_baseptr" for this ADSP minidump
descriptor get set?
Other co-processor such as adsp/cdsp/Mpss has their own way of
registering their region/segment (mostly they are static known
regions) with minidump global infra and which could be happening
from firmware side .
If its happening from firmware side, then that ram phys address range
should be reserved from kernel usage I guess.
Do you have more details on where exactly is this reserved from within
linux kernel?
These regions are inside remoteproc memory carve-out.
like.
adsp_mem: memory@85e00000 {
reg = <0x0 0x85e00000 0x0 0x2100000>;
no-map;
};
thanks for explaining.
--srini
remoteproc_adsp: remoteproc@30000000 {
compatible = "qcom,sm8450-adsp-pas";
reg = <0 0x30000000 0 0x100>;
...
...
memory-region = <&adsp_mem>; <==
-Mukesh
--srini
-Mukesh
--srini
- }
-
- /* Get subsystem table of contents using the minidump id */
- subsystem = &toc->subsystems[minidump_id];
/**
* Collect minidump if SS ToC is valid and segment table
