dmaengine: pl330: support burst mode for dev-to-mem and mem-to-dev transmit
This patch adds to support burst mode for dev-to-mem and mem-to-dev transmit. Signed-off-by: Boojin Kim <boojin.kim@samsung.com> Signed-off-by: Addy Ke <addy.ke@rock-chips.com> Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> cc: Heiko Stuebner <heiko@sntech.de> cc: Doug Anderson <dianders@chromium.org> cc: Olof Johansson <olof@lixom.net> Reviewed-by: Sonny Rao <sonnyrao@chromium.org> Signed-off-by: Caesar Wang <wxt@rock-chips.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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@ -1141,10 +1141,13 @@ static inline int _ldst_devtomem(unsigned dry_run, u8 buf[],
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const struct _xfer_spec *pxs, int cyc)
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const struct _xfer_spec *pxs, int cyc)
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{
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{
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int off = 0;
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int off = 0;
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enum pl330_cond cond;
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cond = (pxs->desc->rqcfg.brst_len == 1) ? SINGLE : BURST;
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while (cyc--) {
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while (cyc--) {
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off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->desc->peri);
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off += _emit_WFP(dry_run, &buf[off], cond, pxs->desc->peri);
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off += _emit_LDP(dry_run, &buf[off], SINGLE, pxs->desc->peri);
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off += _emit_LDP(dry_run, &buf[off], cond, pxs->desc->peri);
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off += _emit_ST(dry_run, &buf[off], ALWAYS);
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off += _emit_ST(dry_run, &buf[off], ALWAYS);
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off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri);
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off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri);
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}
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}
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@ -1156,11 +1159,14 @@ static inline int _ldst_memtodev(unsigned dry_run, u8 buf[],
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const struct _xfer_spec *pxs, int cyc)
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const struct _xfer_spec *pxs, int cyc)
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{
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{
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int off = 0;
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int off = 0;
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enum pl330_cond cond;
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cond = (pxs->desc->rqcfg.brst_len == 1) ? SINGLE : BURST;
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while (cyc--) {
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while (cyc--) {
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off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->desc->peri);
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off += _emit_WFP(dry_run, &buf[off], cond, pxs->desc->peri);
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off += _emit_LD(dry_run, &buf[off], ALWAYS);
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off += _emit_LD(dry_run, &buf[off], ALWAYS);
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off += _emit_STP(dry_run, &buf[off], SINGLE, pxs->desc->peri);
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off += _emit_STP(dry_run, &buf[off], cond, pxs->desc->peri);
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off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri);
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off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri);
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}
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}
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@ -1199,7 +1205,7 @@ static inline int _loop(unsigned dry_run, u8 buf[],
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struct _arg_LPEND lpend;
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struct _arg_LPEND lpend;
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if (*bursts == 1)
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if (*bursts == 1)
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return _bursts(dry_run, buf, pxs, 1);
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return _bursts(pl330, dry_run, buf, pxs, 1);
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/* Max iterations possible in DMALP is 256 */
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/* Max iterations possible in DMALP is 256 */
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if (*bursts >= 256*256) {
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if (*bursts >= 256*256) {
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@ -2560,7 +2566,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
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desc->rqtype = direction;
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desc->rqtype = direction;
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desc->rqcfg.brst_size = pch->burst_sz;
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desc->rqcfg.brst_size = pch->burst_sz;
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desc->rqcfg.brst_len = 1;
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desc->rqcfg.brst_len = pch->burst_len;
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desc->bytes_requested = period_len;
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desc->bytes_requested = period_len;
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fill_px(&desc->px, dst, src, period_len);
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fill_px(&desc->px, dst, src, period_len);
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@ -2705,7 +2711,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
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}
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}
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desc->rqcfg.brst_size = pch->burst_sz;
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desc->rqcfg.brst_size = pch->burst_sz;
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desc->rqcfg.brst_len = 1;
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desc->rqcfg.brst_len = pch->burst_len;
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desc->rqtype = direction;
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desc->rqtype = direction;
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desc->bytes_requested = sg_dma_len(sg);
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desc->bytes_requested = sg_dma_len(sg);
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}
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}
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