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Message-Id: <20231221153528.1588049-2-Frank.Li@nxp.com>
Date: Thu, 21 Dec 2023 10:35:23 -0500
From: Frank Li <Frank.Li@....com>
To: joy.zou@....com,
vkoul@...nel.org
Cc: devicetree@...r.kernel.org,
dmaengine@...r.kernel.org,
frank.li@....com,
imx@...ts.linux.dev,
krzysztof.kozlowski+dt@...aro.org,
linux-kernel@...r.kernel.org,
peng.fan@....com,
robh+dt@...nel.org,
shenwei.wang@....com
Subject: [PATCH v4 1/6] dmaengine: fsl-edma: involve help macro fsl_edma_set(get)_tcd()
Using help macro fsl_edma_set(get)_tcd() and edma_cp_tcd_to_reg() to handle
difference field size. This is not function change and prepare for 64bit
tcd in imx95.
Signed-off-by: Frank Li <Frank.Li@....com>
---
drivers/dma/fsl-edma-common.c | 61 ++++++++++++++++++-----------------
drivers/dma/fsl-edma-common.h | 23 +++++++++++++
2 files changed, 54 insertions(+), 30 deletions(-)
diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index b53f46245c377..50f55d7566a33 100644
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -358,10 +358,10 @@ static size_t fsl_edma_desc_residue(struct fsl_edma_chan *fsl_chan,
/* calculate the total size in this desc */
for (len = i = 0; i < fsl_chan->edesc->n_tcds; i++) {
- nbytes = le32_to_cpu(edesc->tcd[i].vtcd->nbytes);
+ nbytes = fsl_edma_get_tcd_to_cpu(fsl_chan, edesc->tcd[i].vtcd, nbytes);
if (nbytes & (EDMA_V3_TCD_NBYTES_DMLOE | EDMA_V3_TCD_NBYTES_SMLOE))
nbytes = EDMA_V3_TCD_NBYTES_MLOFF_NBYTES(nbytes);
- len += nbytes * le16_to_cpu(edesc->tcd[i].vtcd->biter);
+ len += nbytes * fsl_edma_get_tcd_to_cpu(fsl_chan, edesc->tcd[i].vtcd, biter);
}
if (!in_progress)
@@ -374,16 +374,16 @@ static size_t fsl_edma_desc_residue(struct fsl_edma_chan *fsl_chan,
/* figure out the finished and calculate the residue */
for (i = 0; i < fsl_chan->edesc->n_tcds; i++) {
- nbytes = le32_to_cpu(edesc->tcd[i].vtcd->nbytes);
+ nbytes = fsl_edma_get_tcd_to_cpu(fsl_chan, edesc->tcd[i].vtcd, nbytes);
if (nbytes & (EDMA_V3_TCD_NBYTES_DMLOE | EDMA_V3_TCD_NBYTES_SMLOE))
nbytes = EDMA_V3_TCD_NBYTES_MLOFF_NBYTES(nbytes);
- size = nbytes * le16_to_cpu(edesc->tcd[i].vtcd->biter);
+ size = nbytes * fsl_edma_get_tcd_to_cpu(fsl_chan, edesc->tcd[i].vtcd, biter);
if (dir == DMA_MEM_TO_DEV)
- dma_addr = le32_to_cpu(edesc->tcd[i].vtcd->saddr);
+ dma_addr = fsl_edma_get_tcd_to_cpu(fsl_chan, edesc->tcd[i].vtcd, saddr);
else
- dma_addr = le32_to_cpu(edesc->tcd[i].vtcd->daddr);
+ dma_addr = fsl_edma_get_tcd_to_cpu(fsl_chan, edesc->tcd[i].vtcd, daddr);
len -= size;
if (cur_addr >= dma_addr && cur_addr < dma_addr + size) {
@@ -439,26 +439,26 @@ static void fsl_edma_set_tcd_regs(struct fsl_edma_chan *fsl_chan,
*/
edma_write_tcdreg(fsl_chan, 0, csr);
- edma_write_tcdreg(fsl_chan, tcd->saddr, saddr);
- edma_write_tcdreg(fsl_chan, tcd->daddr, daddr);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, saddr);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, daddr);
- edma_write_tcdreg(fsl_chan, tcd->attr, attr);
- edma_write_tcdreg(fsl_chan, tcd->soff, soff);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, attr);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, soff);
- edma_write_tcdreg(fsl_chan, tcd->nbytes, nbytes);
- edma_write_tcdreg(fsl_chan, tcd->slast, slast);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, nbytes);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, slast);
- edma_write_tcdreg(fsl_chan, tcd->citer, citer);
- edma_write_tcdreg(fsl_chan, tcd->biter, biter);
- edma_write_tcdreg(fsl_chan, tcd->doff, doff);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, citer);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, biter);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, doff);
- edma_write_tcdreg(fsl_chan, tcd->dlast_sga, dlast_sga);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, dlast_sga);
- csr = le16_to_cpu(tcd->csr);
+ csr = fsl_edma_get_tcd_to_cpu(fsl_chan, tcd, csr);
if (fsl_chan->is_sw) {
csr |= EDMA_TCD_CSR_START;
- tcd->csr = cpu_to_le16(csr);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, csr, csr);
}
/*
@@ -473,7 +473,7 @@ static void fsl_edma_set_tcd_regs(struct fsl_edma_chan *fsl_chan,
edma_writel_chreg(fsl_chan, edma_readl_chreg(fsl_chan, ch_csr), ch_csr);
- edma_write_tcdreg(fsl_chan, tcd->csr, csr);
+ edma_cp_tcd_to_reg(fsl_chan, tcd, csr);
}
static inline
@@ -493,12 +493,12 @@ void fsl_edma_fill_tcd(struct fsl_edma_chan *fsl_chan,
* So we put the value in little endian in memory, waiting
* for fsl_edma_set_tcd_regs doing the swap.
*/
- tcd->saddr = cpu_to_le32(src);
- tcd->daddr = cpu_to_le32(dst);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, src, saddr);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, dst, daddr);
- tcd->attr = cpu_to_le16(attr);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, attr, attr);
- tcd->soff = cpu_to_le16(soff);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, soff, soff);
if (fsl_chan->is_multi_fifo) {
/* set mloff to support multiple fifo */
@@ -515,15 +515,16 @@ void fsl_edma_fill_tcd(struct fsl_edma_chan *fsl_chan,
}
}
- tcd->nbytes = cpu_to_le32(nbytes);
- tcd->slast = cpu_to_le32(slast);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, nbytes, nbytes);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, slast, slast);
- tcd->citer = cpu_to_le16(EDMA_TCD_CITER_CITER(citer));
- tcd->doff = cpu_to_le16(doff);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, EDMA_TCD_CITER_CITER(citer), citer);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, doff, doff);
- tcd->dlast_sga = cpu_to_le32(dlast_sga);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, dlast_sga, dlast_sga);
+
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, EDMA_TCD_BITER_BITER(biter), biter);
- tcd->biter = cpu_to_le16(EDMA_TCD_BITER_BITER(biter));
if (major_int)
csr |= EDMA_TCD_CSR_INT_MAJOR;
@@ -539,7 +540,7 @@ void fsl_edma_fill_tcd(struct fsl_edma_chan *fsl_chan,
if (fsl_chan->is_sw)
csr |= EDMA_TCD_CSR_START;
- tcd->csr = cpu_to_le16(csr);
+ fsl_edma_set_tcd_to_le(fsl_chan, tcd, csr, csr);
}
static struct fsl_edma_desc *fsl_edma_alloc_desc(struct fsl_edma_chan *fsl_chan,
diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h
index bb5221158a770..ce779274d81e5 100644
--- a/drivers/dma/fsl-edma-common.h
+++ b/drivers/dma/fsl-edma-common.h
@@ -238,6 +238,9 @@ struct fsl_edma_engine {
edma_writel(chan->edma, (u32 __force)val, &chan->tcd->__name) : \
edma_writew(chan->edma, (u16 __force)val, &chan->tcd->__name))
+#define edma_cp_tcd_to_reg(chan, __tcd, __name) \
+ edma_write_tcdreg(chan, __tcd->__name, __name)
+
#define edma_readl_chreg(chan, __name) \
edma_readl(chan->edma, \
(void __iomem *)&(container_of(chan->tcd, struct fsl_edma3_ch_reg, tcd)->__name))
@@ -246,6 +249,26 @@ struct fsl_edma_engine {
edma_writel(chan->edma, val, \
(void __iomem *)&(container_of(chan->tcd, struct fsl_edma3_ch_reg, tcd)->__name))
+#define fsl_edma_get_tcd(_chan, _tcd, _field) ((_tcd)->_field)
+
+#define fsl_edma_le_to_cpu(x) \
+(sizeof(x) == sizeof(u32) ? le32_to_cpu((__force __le32)(x)) : le16_to_cpu((__force __le16)(x)))
+
+#define fsl_edma_get_tcd_to_cpu(_chan, _tcd, _field) \
+fsl_edma_le_to_cpu(fsl_edma_get_tcd(_chan, _tcd, _field))
+
+#define fsl_edma_set_tcd_to_le(_fsl_chan, _tcd, _val, _field) \
+do { \
+ switch (sizeof((_tcd)->_field)) { \
+ case sizeof(u32): \
+ *(__force __le32 *)(&((_tcd)->_field)) = cpu_to_le32(_val); \
+ break; \
+ case sizeof(u16): \
+ *(__force __le16 *)(&((_tcd)->_field)) = cpu_to_le16(_val); \
+ break; \
+ } \
+} while (0)
+
/*
* R/W functions for big- or little-endian registers:
* The eDMA controller's endian is independent of the CPU core's endian.
--
2.34.1
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