From: Frank Li <Frank.Li@nxp.com>
To: gustavo.pimentel@synopsys.com, hongxing.zhu@nxp.com,
l.stach@pengutronix.de, linux-imx@nxp.com,
linux-pci@vger.kernel.org, dmaengine@vger.kernel.org,
fancer.lancer@gmail.com, lznuaa@gmail.com
Cc: vkoul@kernel.org, lorenzo.pieralisi@arm.com, robh@kernel.org,
kw@linux.com, bhelgaas@google.com, shawnguo@kernel.org,
manivannan.sadhasivam@linaro.org
Subject: [PATCH v5 4/9] dmaengine: dw-edma: rename wr(rd)_ch_cnt to ll_wr(rd)_cnt in struct dw_edma_chip
Date: Thu, 10 Mar 2022 13:24:52 -0600 [thread overview]
Message-ID: <20220310192457.3090-5-Frank.Li@nxp.com> (raw)
In-Reply-To: <20220310192457.3090-1-Frank.Li@nxp.com>
There are same name wr(rd)_ch_cnt in struct dw_edma. EDMA driver get
write(read) channel number from register, then save these into dw_edma.
Old wr(rd)_ch_cnt in dw_edma_chip actuall means how many link list memory
are avaiable in ll_region_wr(rd)[EDMA_MAX_WR_CH]. So rename it to
ll_wr(rd)_cnt to indicate actual usage.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
---
No change since v4
drivers/dma/dw-edma/dw-edma-core.c | 4 ++--
drivers/dma/dw-edma/dw-edma-pcie.c | 12 ++++++------
include/linux/dma/edma.h | 8 ++++----
3 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index 2503f1463f07c..3e4850cfa0b72 100644
--- a/drivers/dma/dw-edma/dw-edma-core.c
+++ b/drivers/dma/dw-edma/dw-edma-core.c
@@ -915,11 +915,11 @@ int dw_edma_probe(struct dw_edma_chip *chip)
raw_spin_lock_init(&dw->lock);
- dw->wr_ch_cnt = min_t(u16, chip->wr_ch_cnt,
+ dw->wr_ch_cnt = min_t(u16, chip->ll_wr_cnt,
dw_edma_v0_core_ch_count(dw, EDMA_DIR_WRITE));
dw->wr_ch_cnt = min_t(u16, dw->wr_ch_cnt, EDMA_MAX_WR_CH);
- dw->rd_ch_cnt = min_t(u16, chip->rd_ch_cnt,
+ dw->rd_ch_cnt = min_t(u16, chip->ll_rd_cnt,
dw_edma_v0_core_ch_count(dw, EDMA_DIR_READ));
dw->rd_ch_cnt = min_t(u16, dw->rd_ch_cnt, EDMA_MAX_RD_CH);
diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
index ae42bad24dd5a..7732537f96086 100644
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -230,14 +230,14 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
chip->nr_irqs = nr_irqs;
chip->ops = &dw_edma_pcie_core_ops;
- chip->wr_ch_cnt = vsec_data.wr_ch_cnt;
- chip->rd_ch_cnt = vsec_data.rd_ch_cnt;
+ chip->ll_wr_cnt = vsec_data.wr_ch_cnt;
+ chip->ll_rd_cnt = vsec_data.rd_ch_cnt;
chip->reg_base = pcim_iomap_table(pdev)[vsec_data.rg.bar];
if (!chip->reg_base)
return -ENOMEM;
- for (i = 0; i < chip->wr_ch_cnt; i++) {
+ for (i = 0; i < chip->ll_wr_cnt; i++) {
struct dw_edma_region *ll_region = &chip->ll_region_wr[i];
struct dw_edma_region *dt_region = &chip->dt_region_wr[i];
struct dw_edma_block *ll_block = &vsec_data.ll_wr[i];
@@ -262,7 +262,7 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
dt_region->sz = dt_block->sz;
}
- for (i = 0; i < chip->rd_ch_cnt; i++) {
+ for (i = 0; i < chip->ll_rd_cnt; i++) {
struct dw_edma_region *ll_region = &chip->ll_region_rd[i];
struct dw_edma_region *dt_region = &chip->dt_region_rd[i];
struct dw_edma_block *ll_block = &vsec_data.ll_rd[i];
@@ -302,7 +302,7 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
chip->reg_base);
- for (i = 0; i < chip->wr_ch_cnt; i++) {
+ for (i = 0; i < chip->ll_wr_cnt; i++) {
pci_dbg(pdev, "L. List:\tWRITE CH%.2u, BAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p, p=%pa)\n",
i, vsec_data.ll_wr[i].bar,
vsec_data.ll_wr[i].off, chip->ll_region_wr[i].sz,
@@ -314,7 +314,7 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev,
chip->dt_region_wr[i].vaddr, &chip->dt_region_wr[i].paddr);
}
- for (i = 0; i < chip->rd_ch_cnt; i++) {
+ for (i = 0; i < chip->ll_rd_cnt; i++) {
pci_dbg(pdev, "L. List:\tREAD CH%.2u, BAR=%u, off=0x%.8lx, sz=0x%zx bytes, addr(v=%p, p=%pa)\n",
i, vsec_data.ll_rd[i].bar,
vsec_data.ll_rd[i].off, chip->ll_region_rd[i].sz,
diff --git a/include/linux/dma/edma.h b/include/linux/dma/edma.h
index e9ce652b88233..c2039246fc08c 100644
--- a/include/linux/dma/edma.h
+++ b/include/linux/dma/edma.h
@@ -40,8 +40,8 @@ enum dw_edma_map_format {
* @nr_irqs: total dma irq number
* @ops DMA channel to IRQ number mapping
* @reg_base DMA register base address
- * @wr_ch_cnt DMA write channel number
- * @rd_ch_cnt DMA read channel number
+ * @ll_wr_cnt DMA write link list number
+ * @ll_rd_cnt DMA read link list number
* @rg_region DMA register region
* @ll_region_wr DMA descriptor link list memory for write channel
* @ll_region_rd DMA descriptor link list memory for read channel
@@ -56,8 +56,8 @@ struct dw_edma_chip {
void __iomem *reg_base;
- u16 wr_ch_cnt;
- u16 rd_ch_cnt;
+ u16 ll_wr_cnt;
+ u16 ll_rd_cnt;
/* link list address */
struct dw_edma_region ll_region_wr[EDMA_MAX_WR_CH];
struct dw_edma_region ll_region_rd[EDMA_MAX_RD_CH];
--
2.24.0.rc1
next prev parent reply other threads:[~2022-03-10 19:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-10 19:24 [PATCH v5 0/9] Enable designware PCI EP EDMA locally Frank Li
2022-03-10 19:24 ` [PATCH v5 1/9] dmaengine: dw-edma: Detach the private data and chip info structures Frank Li
2022-03-10 19:24 ` [PATCH v5 2/9] dmaengine: dw-edma: remove unused field irq in struct dw_edma_chip Frank Li
2022-03-10 19:24 ` [PATCH v5 3/9] dmaengine: dw-edma: change rg_region to reg_base " Frank Li
2022-03-10 19:24 ` Frank Li [this message]
2022-03-10 19:24 ` [PATCH v5 5/9] dmaengine: dw-edma: Fix programming the source & dest addresses for ep Frank Li
2022-03-10 19:24 ` [PATCH v5 6/9] dmaengine: dw-edma: Don't rely on the deprecated "direction" member Frank Li
2022-03-10 19:24 ` [PATCH v5 7/9] dmaengine: dw-edma: Add support for chip specific flags Frank Li
2022-03-10 19:24 ` [PATCH v5 8/9] dmaengine: dw-edma: Add DW_EDMA_CHIP_32BIT_DBI " Frank Li
2022-03-10 19:24 ` [PATCH v5 9/9] PCI: endpoint: functions/pci-epf-test: Support PCI controller DMA Frank Li
2022-03-10 19:45 ` [PATCH v5 0/9] Enable designware PCI EP EDMA locally Serge Semin
2022-03-10 19:58 ` Zhi Li
2022-03-10 20:00 ` Serge Semin
2022-03-11 22:58 ` Bjorn Helgaas
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