提交 848e9776 编写于 作者: B Boojin Kim 提交者: Vinod Koul

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: NBoojin Kim <boojin.kim@samsung.com>
Signed-off-by: NAddy Ke <addy.ke@rock-chips.com>
Signed-off-by: NShawn 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: NSonny Rao <sonnyrao@chromium.org>
Signed-off-by: NCaesar Wang <wxt@rock-chips.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
上级 92e963f5
...@@ -1141,10 +1141,13 @@ static inline int _ldst_devtomem(unsigned dry_run, u8 buf[], ...@@ -1141,10 +1141,13 @@ static inline int _ldst_devtomem(unsigned dry_run, u8 buf[],
const struct _xfer_spec *pxs, int cyc) const struct _xfer_spec *pxs, int cyc)
{ {
int off = 0; int off = 0;
enum pl330_cond cond;
cond = (pxs->desc->rqcfg.brst_len == 1) ? SINGLE : BURST;
while (cyc--) { while (cyc--) {
off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->desc->peri); off += _emit_WFP(dry_run, &buf[off], cond, pxs->desc->peri);
off += _emit_LDP(dry_run, &buf[off], SINGLE, pxs->desc->peri); off += _emit_LDP(dry_run, &buf[off], cond, pxs->desc->peri);
off += _emit_ST(dry_run, &buf[off], ALWAYS); off += _emit_ST(dry_run, &buf[off], ALWAYS);
off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri); off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri);
} }
...@@ -1156,11 +1159,14 @@ static inline int _ldst_memtodev(unsigned dry_run, u8 buf[], ...@@ -1156,11 +1159,14 @@ static inline int _ldst_memtodev(unsigned dry_run, u8 buf[],
const struct _xfer_spec *pxs, int cyc) const struct _xfer_spec *pxs, int cyc)
{ {
int off = 0; int off = 0;
enum pl330_cond cond;
cond = (pxs->desc->rqcfg.brst_len == 1) ? SINGLE : BURST;
while (cyc--) { while (cyc--) {
off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->desc->peri); off += _emit_WFP(dry_run, &buf[off], cond, pxs->desc->peri);
off += _emit_LD(dry_run, &buf[off], ALWAYS); off += _emit_LD(dry_run, &buf[off], ALWAYS);
off += _emit_STP(dry_run, &buf[off], SINGLE, pxs->desc->peri); off += _emit_STP(dry_run, &buf[off], cond, pxs->desc->peri);
off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri); off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri);
} }
...@@ -1199,7 +1205,7 @@ static inline int _loop(unsigned dry_run, u8 buf[], ...@@ -1199,7 +1205,7 @@ static inline int _loop(unsigned dry_run, u8 buf[],
struct _arg_LPEND lpend; struct _arg_LPEND lpend;
if (*bursts == 1) if (*bursts == 1)
return _bursts(dry_run, buf, pxs, 1); return _bursts(pl330, dry_run, buf, pxs, 1);
/* Max iterations possible in DMALP is 256 */ /* Max iterations possible in DMALP is 256 */
if (*bursts >= 256*256) { if (*bursts >= 256*256) {
...@@ -2560,7 +2566,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic( ...@@ -2560,7 +2566,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
desc->rqtype = direction; desc->rqtype = direction;
desc->rqcfg.brst_size = pch->burst_sz; desc->rqcfg.brst_size = pch->burst_sz;
desc->rqcfg.brst_len = 1; desc->rqcfg.brst_len = pch->burst_len;
desc->bytes_requested = period_len; desc->bytes_requested = period_len;
fill_px(&desc->px, dst, src, period_len); fill_px(&desc->px, dst, src, period_len);
...@@ -2705,7 +2711,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl, ...@@ -2705,7 +2711,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
} }
desc->rqcfg.brst_size = pch->burst_sz; desc->rqcfg.brst_size = pch->burst_sz;
desc->rqcfg.brst_len = 1; desc->rqcfg.brst_len = pch->burst_len;
desc->rqtype = direction; desc->rqtype = direction;
desc->bytes_requested = sg_dma_len(sg); desc->bytes_requested = sg_dma_len(sg);
} }
......
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