On Thu 16 Jul 15:20 PDT 2020, Rishabh Bhatnagar wrote:
> From: Sibi Sankar <si...@codeaurora.org>
>
> In order to land inline coredump support for mss, the dump_segment
> function would need to support granularities less than the segment
> size. This is achieved by replacing mask based tracking with size.
>
> Signed-off-by: Sibi Sankar <si...@codeaurora.org>
> Signed-off-by: Rishabh Bhatnagar <risha...@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.anders...@linaro.org>
> ---
> drivers/remoteproc/qcom_q6v5_mss.c | 17 ++++++++---------
> 1 file changed, 8 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/remoteproc/qcom_q6v5_mss.c
> b/drivers/remoteproc/qcom_q6v5_mss.c
> index feb70283b..037cd45 100644
> --- a/drivers/remoteproc/qcom_q6v5_mss.c
> +++ b/drivers/remoteproc/qcom_q6v5_mss.c
> @@ -181,8 +181,8 @@ struct q6v5 {
> bool running;
>
> bool dump_mba_loaded;
> - unsigned long dump_segment_mask;
> - unsigned long dump_complete_mask;
> + size_t current_dump_size;
> + size_t total_dump_size;
>
> phys_addr_t mba_phys;
> void *mba_region;
> @@ -1203,7 +1203,6 @@ static void qcom_q6v5_dump_segment(struct rproc *rproc,
> {
> int ret = 0;
> struct q6v5 *qproc = rproc->priv;
> - unsigned long mask = BIT((unsigned long)segment->priv);
> int offset = segment->da - qproc->mpss_reloc;
> void *ptr = NULL;
>
> @@ -1229,10 +1228,10 @@ static void qcom_q6v5_dump_segment(struct rproc
> *rproc,
> memset(dest, 0xff, segment->size);
> }
>
> - qproc->dump_segment_mask |= mask;
> + qproc->current_dump_size += segment->size;
>
> /* Reclaim mba after copying segments */
> - if (qproc->dump_segment_mask == qproc->dump_complete_mask) {
> + if (qproc->current_dump_size == qproc->total_dump_size) {
> if (qproc->dump_mba_loaded) {
> /* Try to reset ownership back to Q6 */
> q6v5_xfer_mem_ownership(qproc, &qproc->mpss_perm,
> @@ -1274,7 +1273,7 @@ static int q6v5_start(struct rproc *rproc)
> "Failed to reclaim mba buffer system may become
> unstable\n");
>
> /* Reset Dump Segment Mask */
> - qproc->dump_segment_mask = 0;
> + qproc->current_dump_size = 0;
> qproc->running = true;
>
> return 0;
> @@ -1323,7 +1322,7 @@ static int qcom_q6v5_register_dump_segments(struct
> rproc *rproc,
>
> ehdr = (struct elf32_hdr *)fw->data;
> phdrs = (struct elf32_phdr *)(ehdr + 1);
> - qproc->dump_complete_mask = 0;
> + qproc->total_dump_size = 0;
>
> for (i = 0; i < ehdr->e_phnum; i++) {
> phdr = &phdrs[i];
> @@ -1334,11 +1333,11 @@ static int qcom_q6v5_register_dump_segments(struct
> rproc *rproc,
> ret = rproc_coredump_add_custom_segment(rproc, phdr->p_paddr,
> phdr->p_memsz,
> qcom_q6v5_dump_segment,
> - (void *)i);
> + NULL);
> if (ret)
> break;
>
> - qproc->dump_complete_mask |= BIT(i);
> + qproc->total_dump_size += phdr->p_memsz;
> }
>
> release_firmware(fw);
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
