From: Jie Hai <haijie1@huawei.com>
To: <vkoul@kernel.org>, <wangzhou1@hisilicon.com>
Cc: <dmaengine@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [RESEND PATCH v5 4/7] dmaengine: hisilicon: Use macros instead of magic number
Date: Tue, 30 Aug 2022 14:22:48 +0800 [thread overview]
Message-ID: <20220830062251.52993-5-haijie1@huawei.com> (raw)
In-Reply-To: <20220830062251.52993-1-haijie1@huawei.com>
readl_relaxed_poll_timeout() uses magic numbers 10 and 1000, which
indicate maximum time to sleep between reads in us and timeout in us,
respectively.
Use macros HISI_DMA_POLL_Q_STS_DELAY_US and
HISI_DMA_POLL_Q_STS_TIME_OUT_US instead of these two numbers.
Signed-off-by: Jie Hai <haijie1@huawei.com>
Acked-by: Zhou Wang <wangzhou1@hisilicon.com>
---
drivers/dma/hisi_dma.c | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c
index 0233b42143c7..5d62fe62ba00 100644
--- a/drivers/dma/hisi_dma.c
+++ b/drivers/dma/hisi_dma.c
@@ -36,6 +36,9 @@
#define PCI_BAR_2 2
+#define HISI_DMA_POLL_Q_STS_DELAY_US 10
+#define HISI_DMA_POLL_Q_STS_TIME_OUT_US 1000
+
enum hisi_dma_mode {
EP = 0,
RC,
@@ -185,15 +188,19 @@ static void hisi_dma_reset_or_disable_hw_chan(struct hisi_dma_chan *chan,
{
struct hisi_dma_dev *hdma_dev = chan->hdma_dev;
u32 index = chan->qp_num, tmp;
+ void __iomem *addr;
int ret;
hisi_dma_pause_dma(hdma_dev, index, true);
hisi_dma_enable_dma(hdma_dev, index, false);
hisi_dma_mask_irq(hdma_dev, index);
- ret = readl_relaxed_poll_timeout(hdma_dev->base +
- HISI_DMA_Q_FSM_STS + index * HISI_DMA_OFFSET, tmp,
- FIELD_GET(HISI_DMA_FSM_STS_MASK, tmp) != RUN, 10, 1000);
+ addr = hdma_dev->base +
+ HISI_DMA_Q_FSM_STS + index * HISI_DMA_OFFSET;
+
+ ret = readl_relaxed_poll_timeout(addr, tmp,
+ FIELD_GET(HISI_DMA_FSM_STS_MASK, tmp) != RUN,
+ HISI_DMA_POLL_Q_STS_DELAY_US, HISI_DMA_POLL_Q_STS_TIME_OUT_US);
if (ret) {
dev_err(&hdma_dev->pdev->dev, "disable channel timeout!\n");
WARN_ON(1);
@@ -208,9 +215,9 @@ static void hisi_dma_reset_or_disable_hw_chan(struct hisi_dma_chan *chan,
hisi_dma_unmask_irq(hdma_dev, index);
}
- ret = readl_relaxed_poll_timeout(hdma_dev->base +
- HISI_DMA_Q_FSM_STS + index * HISI_DMA_OFFSET, tmp,
- FIELD_GET(HISI_DMA_FSM_STS_MASK, tmp) == IDLE, 10, 1000);
+ ret = readl_relaxed_poll_timeout(addr, tmp,
+ FIELD_GET(HISI_DMA_FSM_STS_MASK, tmp) == IDLE,
+ HISI_DMA_POLL_Q_STS_DELAY_US, HISI_DMA_POLL_Q_STS_TIME_OUT_US);
if (ret) {
dev_err(&hdma_dev->pdev->dev, "reset channel timeout!\n");
WARN_ON(1);
--
2.33.0
next prev parent reply other threads:[~2022-08-30 6:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-30 6:22 [RESEND PATCH v5 0/7] dmaengine: hisilicon: Add support for hisi dma driver Jie Hai
2022-08-30 6:22 ` [RESEND PATCH v5 1/7] dmaengine: hisilicon: Disable channels when unregister hisi_dma Jie Hai
2022-08-30 6:22 ` [RESEND PATCH v5 2/7] dmaengine: hisilicon: Fix CQ head update Jie Hai
2022-08-30 6:22 ` [RESEND PATCH v5 3/7] dmaengine: hisilicon: Add multi-thread support for a DMA channel Jie Hai
2022-08-30 6:22 ` Jie Hai [this message]
2022-08-30 6:22 ` [RESEND PATCH v5 5/7] dmaengine: hisilicon: Adapt DMA driver to HiSilicon IP09 Jie Hai
2022-08-30 6:22 ` [RESEND PATCH v5 6/7] dmaengine: hisilicon: Dump regs to debugfs Jie Hai
2022-08-30 6:22 ` [RESEND PATCH v5 7/7] MAINTAINERS: Add myself as maintainer for hisi_dma Jie Hai
2022-09-04 17:12 ` [RESEND PATCH v5 0/7] dmaengine: hisilicon: Add support for hisi dma driver Vinod Koul
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220830062251.52993-5-haijie1@huawei.com \
--to=haijie1@huawei.com \
--cc=dmaengine@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=vkoul@kernel.org \
--cc=wangzhou1@hisilicon.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox