From: Devendra K Verma <devendra.verma@amd.com>
To: <bhelgaas@google.com>, <mani@kernel.org>, <vkoul@kernel.org>
Cc: <dmaengine@vger.kernel.org>, <linux-pci@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <michal.simek@amd.com>,
<Devendra.Verma@amd.com>
Subject: [PATCH v1] dmaengine: dw-edma: Add Xilinx CPM6-DMA DeviceID
Date: Wed, 3 Jun 2026 20:01:58 +0530 [thread overview]
Message-ID: <20260603143158.3243500-1-devendra.verma@amd.com> (raw)
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
next reply other threads:[~2026-06-03 14:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-03 14:31 Devendra K Verma [this message]
2026-06-03 14:44 ` [PATCH v1] dmaengine: dw-edma: Add Xilinx CPM6-DMA DeviceID sashiko-bot
2026-06-04 12:12 ` Verma, Devendra
2026-06-04 15:35 ` Vinod Koul
2026-06-04 19:48 ` Frank Li
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