lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Fri, 28 Aug 2015 08:37:48 +0800
From:	Shawn Lin <shawn.lin@...k-chips.com>
To:	Vinod Koul <vinod.koul@...el.com>, Heiko Stuebner <heiko@...ech.de>
Cc:	Boojin Kim <boojin.kim@...sung.com>,
	Doug Anderson <dianders@...omium.org>,
	Olof Johansson <olof@...om.net>,
	Sonny Rao <sonnyrao@...omium.org>,
	Addy Ke <addy.ke@...k-chips.com>, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	Shawn Lin <shawn.lin@...k-chips.com>
Subject: [PATCH v2 1/5] DMA: pl330: support burst mode for dev-to-mem and mem-to-dev transmit

From: Boojin Kim <boojin.kim@...sung.com>

This patch adds to support burst mode for dev-to-mem and
mem-to-dev transmit.

Signed-off-by: Boojin Kim <boojin.kim@...sung.com>
Signed-off-by: Addy Ke <addy.ke@...k-chips.com>
Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
cc: Heiko Stuebner <heiko@...ech.de>
cc: Doug Anderson <dianders@...omium.org>
cc: Olof Johansson <olof@...om.net>

---

Changes in v2:
- amend the author
- amend Olof's mail address

Changes in v1:
- rename broken-no-flushp to "arm,pl330-broken-no-flushp" suggested
  by Krzysztof.
- add From original author.
- remove Sunny's tag

 drivers/dma/pl330.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index ecab4ea0..0d544d2 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -1141,10 +1141,13 @@ static inline int _ldst_devtomem(unsigned dry_run, u8 buf[],
 		const struct _xfer_spec *pxs, int cyc)
 {
 	int off = 0;
+	enum pl330_cond cond;
+
+	cond = (pxs->desc->rqcfg.brst_len == 1) ? SINGLE : BURST;
 
 	while (cyc--) {
-		off += _emit_WFP(dry_run, &buf[off], SINGLE, pxs->desc->peri);
-		off += _emit_LDP(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], cond, pxs->desc->peri);
 		off += _emit_ST(dry_run, &buf[off], ALWAYS);
 		off += _emit_FLUSHP(dry_run, &buf[off], pxs->desc->peri);
 	}
@@ -1156,11 +1159,14 @@ static inline int _ldst_memtodev(unsigned dry_run, u8 buf[],
 		const struct _xfer_spec *pxs, int cyc)
 {
 	int off = 0;
+	enum pl330_cond cond;
+
+	cond = (pxs->desc->rqcfg.brst_len == 1) ? SINGLE : BURST;
 
 	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_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);
 	}
 
@@ -2557,7 +2563,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
 
 		desc->rqtype = direction;
 		desc->rqcfg.brst_size = pch->burst_sz;
-		desc->rqcfg.brst_len = 1;
+		desc->rqcfg.brst_len = pch->burst_len;
 		desc->bytes_requested = period_len;
 		fill_px(&desc->px, dst, src, period_len);
 
@@ -2702,7 +2708,7 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 		}
 
 		desc->rqcfg.brst_size = pch->burst_sz;
-		desc->rqcfg.brst_len = 1;
+		desc->rqcfg.brst_len = pch->burst_len;
 		desc->rqtype = direction;
 		desc->bytes_requested = sg_dma_len(sg);
 	}
-- 
2.3.7


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists