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Commit e83aab9a authored by Mohammed Nayeem Ur Rahman's avatar Mohammed Nayeem Ur Rahman
Browse files

msm: adsprpc: Adding inrout buffer cache maintenance support 



Adding inrout buffer CMO support with new cache flush logic
involving offsets and overlaps.

Acked-by: default avatarDeepika Singh <dsi@qti.qualcomm.com>
Change-Id: I1e5ac1e3c52c80d40b6c3a0c9207e7a73d06bf65
Signed-off-by: default avatarMohammed Nayeem Ur Rahman <mohara@codeaurora.org>
parent cfab2293

drivers/char/adsprpc.c

+13 −7
Original line number Diff line number Diff line
@@ -261,6 +261,7 @@ struct overlap { 
	uintptr_t mstart;

	uintptr_t mend;

	uintptr_t offset;

	int do_cmo;		/*used for cache maintenance of inrout buffers*/

};



struct smq_invoke_ctx {
@@ -1269,6 +1270,9 @@ static int context_build_overlap(struct smq_invoke_ctx *ctx) 
			if (ctx->overps[i]->end > max.end) {

				max.end = ctx->overps[i]->end;

			} else {

				if (max.raix + 1 <= inbufs &&

				ctx->overps[i]->raix + 1 > inbufs)

					ctx->overps[i]->do_cmo = 1;

				ctx->overps[i]->mend = 0;

				ctx->overps[i]->mstart = 0;

			}
@@ -1858,11 +1862,12 @@ static int get_args(uint32_t kernel, struct smq_invoke_ctx *ctx) 
		if (map && (map->attr & FASTRPC_ATTR_FORCE_NOFLUSH))

			continue;



		if (rpra && rpra[i].buf.len &&

			ctx->overps[oix]->mstart) {

		if (rpra && rpra[i].buf.len && (ctx->overps[oix]->mstart ||

		ctx->overps[oix]->do_cmo == 1)) {

			if (map && map->buf) {

				if ((buf_page_size(ctx->overps[oix]->mend -

				ctx->overps[oix]->mstart)) == map->size) {

				if (((buf_page_size(ctx->overps[oix]->mend -

				ctx->overps[oix]->mstart)) == map->size) ||

				ctx->overps[oix]->do_cmo) {

					dma_buf_begin_cpu_access(map->buf,

						DMA_TO_DEVICE);

					dma_buf_end_cpu_access(map->buf,
@@ -2000,10 +2005,11 @@ static void inv_args(struct smq_invoke_ctx *ctx) 
				buf_page_start(rpra[over].buf.pv)) {

			continue;

		}

		if (ctx->overps[i]->mstart) {

		if (ctx->overps[i]->mstart || ctx->overps[i]->do_cmo == 1) {

			if (map && map->buf) {

				if ((buf_page_size(ctx->overps[i]->mend -

				ctx->overps[i]->mstart)) == map->size) {

				if (((buf_page_size(ctx->overps[i]->mend -

				ctx->overps[i]->mstart)) == map->size) ||

				ctx->overps[i]->do_cmo) {

					dma_buf_begin_cpu_access(map->buf,

						DMA_TO_DEVICE);

					dma_buf_end_cpu_access(map->buf,