From: Yue Hu <zbestahu@gmail.com>
To: adrian.hunter@intel.com, riteshh@codeaurora.org,
asutoshd@codeaurora.org, ulf.hansson@linaro.org
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
huyue2@yulong.com, zbestahu@163.com
Subject: [PATCH] mmc: cqhci: introduce get_trans_desc_offset()
Date: Fri, 21 May 2021 11:44:32 +0800 [thread overview]
Message-ID: <20210521034432.2321-1-zbestahu@gmail.com> (raw)
From: Yue Hu <huyue2@yulong.com>
The same calculation to get transfer descriptor offset is already used
at 3 different locations. Let's create a new helper to simplify code.
Signed-off-by: Yue Hu <huyue2@yulong.com>
---
drivers/mmc/host/cqhci-core.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c
index c237b6e..1128dd5 100644
--- a/drivers/mmc/host/cqhci-core.c
+++ b/drivers/mmc/host/cqhci-core.c
@@ -45,17 +45,23 @@ static inline u8 *get_link_desc(struct cqhci_host *cq_host, u8 tag)
return desc + cq_host->task_desc_len;
}
+static inline size_t get_trans_desc_offset(struct cqhci_host *cq_host, u8 tag)
+{
+ return cq_host->trans_desc_len * cq_host->mmc->max_segs * tag;
+}
+
static inline dma_addr_t get_trans_desc_dma(struct cqhci_host *cq_host, u8 tag)
{
- return cq_host->trans_desc_dma_base +
- (cq_host->mmc->max_segs * tag *
- cq_host->trans_desc_len);
+ size_t offset = get_trans_desc_offset(cq_host, tag);
+
+ return cq_host->trans_desc_dma_base + offset;
}
static inline u8 *get_trans_desc(struct cqhci_host *cq_host, u8 tag)
{
- return cq_host->trans_desc_base +
- (cq_host->trans_desc_len * cq_host->mmc->max_segs * tag);
+ size_t offset = get_trans_desc_offset(cq_host, tag);
+
+ return cq_host->trans_desc_base + offset;
}
static void setup_trans_desc(struct cqhci_host *cq_host, u8 tag)
@@ -194,8 +200,7 @@ static int cqhci_host_alloc_tdl(struct cqhci_host *cq_host)
cq_host->desc_size = cq_host->slot_sz * cq_host->num_slots;
- cq_host->data_size = cq_host->trans_desc_len * cq_host->mmc->max_segs *
- cq_host->mmc->cqe_qdepth;
+ cq_host->data_size = get_trans_desc_offset(cq_host, cq_host->mmc->cqe_qdepth);
pr_debug("%s: cqhci: desc_size: %zu data_sz: %zu slot-sz: %d\n",
mmc_hostname(cq_host->mmc), cq_host->desc_size, cq_host->data_size,
--
1.9.1
next reply other threads:[~2021-05-21 3:44 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 3:44 Yue Hu [this message]
2021-05-24 14:10 ` [PATCH] mmc: cqhci: introduce get_trans_desc_offset() Ulf Hansson
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