[v1] dmaengine: dw-edma: Add Xilinx CPM6-DMA DeviceID

[PATCH v1] dmaengine: dw-edma: Add Xilinx CPM6-DMA DeviceID

Posted by Devendra K Verma 4 days, 17 hours ago

From: Devendra K Verma <devverma@amd.com>

Add Device ID for AMD (Xilinx) CPM6 DMA IP.
This IP enables 64 Read and 64 Write Channels.

Adding the relevant dw_edma_pcie_data to use
8 Read and 8 Write Channels for initial commit.

Signed-off-by: Devendra K Verma <devendra.verma@amd.com>
---
 drivers/dma/dw-edma/dw-edma-pcie.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
index 0b30ce138503..4ba368d18cb1 100644
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -27,6 +27,7 @@
 
 /* AMD MDB (Xilinx) specific defines */
 #define PCI_DEVICE_ID_XILINX_B054		0xb054
+#define PCI_DEVICE_ID_XILINX_B00F		0xb00f
 
 #define DW_PCIE_XILINX_MDB_VSEC_DMA_ID		0x6
 #define DW_PCIE_XILINX_MDB_VSEC_ID		0x20
@@ -125,6 +126,19 @@ static const struct dw_edma_pcie_data xilinx_mdb_data = {
 	.rd_ch_cnt			= 8,
 };
 
+static const struct dw_edma_pcie_data xilinx_cpm6_dma_data = {
+	/* MDB registers location */
+	.rg.bar				= BAR_0,
+	.rg.off				= SZ_4K,	/*  4 Kbytes */
+	.rg.sz				= SZ_8K,	/*  8 Kbytes */
+
+	/* Other */
+	.mf				= EDMA_MF_HDMA_NATIVE,
+	.irqs				= 1,
+	.wr_ch_cnt			= 8,
+	.rd_ch_cnt			= 8,
+};
+
 static void dw_edma_set_chan_region_offset(struct dw_edma_pcie_data *pdata,
 					   enum pci_barno bar, off_t start_off,
 					   off_t ll_off_gap, size_t ll_size,
@@ -547,6 +561,8 @@ static const struct pci_device_id dw_edma_pcie_id_table[] = {
 	{ PCI_DEVICE_DATA(SYNOPSYS, EDDA, &snps_edda_data) },
 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_XILINX_B054),
 	  (kernel_ulong_t)&xilinx_mdb_data },
+	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_XILINX_B00F),
+	  (kernel_ulong_t)&xilinx_cpm6_dma_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(pci, dw_edma_pcie_id_table);
-- 
2.43.0

Re: [PATCH v1] dmaengine: dw-edma: Add Xilinx CPM6-DMA DeviceID

Posted by Frank Li 3 days, 11 hours ago

On Wed, Jun 03, 2026 at 08:01:58PM +0530, Devendra K Verma wrote:
> From: Devendra K Verma <devverma@amd.com>
>
> Add Device ID for AMD (Xilinx) CPM6 DMA IP.
> This IP enables 64 Read and 64 Write Channels.
>
> Adding the relevant dw_edma_pcie_data to use
> 8 Read and 8 Write Channels for initial commit.

Nit: wrap at 75 char

>
> Signed-off-by: Devendra K Verma <devendra.verma@amd.com>
> ---
>  drivers/dma/dw-edma/dw-edma-pcie.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
> index 0b30ce138503..4ba368d18cb1 100644
> --- a/drivers/dma/dw-edma/dw-edma-pcie.c
> +++ b/drivers/dma/dw-edma/dw-edma-pcie.c
> @@ -27,6 +27,7 @@
>
>  /* AMD MDB (Xilinx) specific defines */
>  #define PCI_DEVICE_ID_XILINX_B054		0xb054
> +#define PCI_DEVICE_ID_XILINX_B00F		0xb00f
>
>  #define DW_PCIE_XILINX_MDB_VSEC_DMA_ID		0x6
>  #define DW_PCIE_XILINX_MDB_VSEC_ID		0x20
> @@ -125,6 +126,19 @@ static const struct dw_edma_pcie_data xilinx_mdb_data = {
>  	.rd_ch_cnt			= 8,
>  };
>
> +static const struct dw_edma_pcie_data xilinx_cpm6_dma_data = {
> +	/* MDB registers location */
> +	.rg.bar				= BAR_0,
> +	.rg.off				= SZ_4K,	/*  4 Kbytes */
> +	.rg.sz				= SZ_8K,	/*  8 Kbytes */
> +
> +	/* Other */
> +	.mf				= EDMA_MF_HDMA_NATIVE,
> +	.irqs				= 1,
> +	.wr_ch_cnt			= 8,
> +	.rd_ch_cnt			= 8,
> +};
> +
>  static void dw_edma_set_chan_region_offset(struct dw_edma_pcie_data *pdata,
>  					   enum pci_barno bar, off_t start_off,
>  					   off_t ll_off_gap, size_t ll_size,
> @@ -547,6 +561,8 @@ static const struct pci_device_id dw_edma_pcie_id_table[] = {
>  	{ PCI_DEVICE_DATA(SYNOPSYS, EDDA, &snps_edda_data) },
>  	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_XILINX_B054),
>  	  (kernel_ulong_t)&xilinx_mdb_data },
> +	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_XILINX_B00F),
> +	  (kernel_ulong_t)&xilinx_cpm6_dma_data },

Please .driver_data = (kernel_ulong_t)&xilinx_cpm6_dma_data

Now Uwe Kleine-König is cleanup this.

See similar thread
https://lore.kernel.org/linux-i3c/20260504143324.2122737-2-u.kleine-koenig@baylibre.com/

Frank

>  	{ }
>  };
>  MODULE_DEVICE_TABLE(pci, dw_edma_pcie_id_table);
> --
> 2.43.0
>