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| author | Gustavo Pimentel <Gustavo.Pimentel@synopsys.com> | 2019-06-04 16:29:26 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-06-10 10:40:39 +0300 |
| commit | 41aaff2a2ac01c5f5415f9de9cd7015ac2b8d569 (patch) | |
| tree | 20d3a2db82eda2c2351a656c4d9227420a9c43d1 /drivers/dma/dw-edma/Kconfig | |
| parent | 1f418f46503d72594bbe6407d97fd2ae1ce15ee6 (diff) | |
| download | linux-41aaff2a2ac01c5f5415f9de9cd7015ac2b8d569.tar.xz | |
dmaengine: Add Synopsys eDMA IP PCIe glue-logic
Synopsys eDMA IP is normally distributed along with Synopsys PCIe
EndPoint IP (depends of the use and licensing agreement).
This IP requires some basic configurations, such as:
- eDMA registers BAR
- eDMA registers offset
- eDMA registers size
- eDMA linked list memory BAR
- eDMA linked list memory offset
- eDMA linked list memory size
- eDMA data memory BAR
- eDMA data memory offset
- eDMA data memory size
- eDMA version
- eDMA mode
- IRQs available for eDMA
As a working example, PCIe glue-logic will attach to a Synopsys PCIe
EndPoint IP prototype kit (Vendor ID = 0x16c3, Device ID = 0xedda),
which has built-in an eDMA IP with this default configuration:
- eDMA registers BAR = 0
- eDMA registers offset = 0x00001000 (4 Kbytes)
- eDMA registers size = 0x00002000 (8 Kbytes)
- eDMA linked list memory BAR = 2
- eDMA linked list memory offset = 0x00000000 (0 Kbytes)
- eDMA linked list memory size = 0x00800000 (8 Mbytes)
- eDMA data memory BAR = 2
- eDMA data memory offset = 0x00800000 (8 Mbytes)
- eDMA data memory size = 0x03800000 (56 Mbytes)
- eDMA version = 0
- eDMA mode = EDMA_MODE_UNROLL
- IRQs = 1
This driver can be compile as built-in or external module in kernel.
To enable this driver just select DW_EDMA_PCIE option in kernel
configuration, however it requires and selects automatically DW_EDMA
option too.
Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/dw-edma/Kconfig')
| -rw-r--r-- | drivers/dma/dw-edma/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/dma/dw-edma/Kconfig b/drivers/dma/dw-edma/Kconfig index 3016bed63589..c0838ce959e4 100644 --- a/drivers/dma/dw-edma/Kconfig +++ b/drivers/dma/dw-edma/Kconfig @@ -7,3 +7,12 @@ config DW_EDMA help Support the Synopsys DesignWare eDMA controller, normally implemented on endpoints SoCs. + +config DW_EDMA_PCIE + tristate "Synopsys DesignWare eDMA PCIe driver" + depends on PCI && PCI_MSI + select DW_EDMA + help + Provides a glue-logic between the Synopsys DesignWare + eDMA controller and an endpoint PCIe device. This also serves + as a reference design to whom desires to use this IP. |