| Message ID | 20240814221818.2612484-1-jitendra.vegiraju@broadcom.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | net: stmmac: Add PCI driver support for BCM8958x | expand |
Hi Jitendra On Wed, Aug 14, 2024 at 03:18:13PM -0700, jitendra.vegiraju@broadcom.com wrote: > From: Jitendra Vegiraju <jitendra.vegiraju@broadcom.com> > > This patchset adds basic PCI ethernet device driver support for Broadcom > BCM8958x Automotive Ethernet switch SoC devices. > > This SoC device has PCIe ethernet MAC attached to an integrated ethernet > switch using XGMII interface. The PCIe ethernet controller is presented to > the Linux host as PCI network device. > > The following block diagram gives an overview of the application. > +=================================+ > | Host CPU/Linux | > +=================================+ > || PCIe > || > +==========================================+ > | +--------------+ | > | | PCIE Endpoint| | > | | Ethernet | | > | | Controller | | > | | DMA | | > | +--------------+ | > | | MAC | BCM8958X | > | +--------------+ SoC | > | || XGMII | > | || | > | +--------------+ | > | | Ethernet | | > | | switch | | > | +--------------+ | > | || || || || | > +==========================================+ > || || || || More external interfaces > > The MAC block on BCM8958x is based on Synopsis XGMAC 4.00a core. This > MAC IP introduces new DMA architecture called Hyper-DMA for virtualization > scalability. > > Driver functionality specific to new MAC (DW25GMAC) is implemented in > new file dw25gmac.c. > > Management of integrated ethernet switch on this SoC is not handled by > the PCIe interface. > This SoC device has PCIe ethernet MAC directly attached to an integrated > ethernet switch using XGMII interface. > > v3->v4: > Based on Serge's questions, received a confirmation from Synopsis that > the MAC IP is indeed the new 25GMAC design. > Renamed all references of XGMAC4 to 25GMAC. > The patch series is rearranged slightly as follows. > Patch1 (new): Define HDMA mapping data structure in kernel's stmmac.h > Patch2 (v3 Patch1): Adds dma_ops for dw25gmac in stmmac core > Renamed new files dwxgmac4.* to dw25gmac.* - Serge Semin > Defined new Synopsis version and device id macros for DW25GMAC. > Coverted bit operations to FIELD_PREP macros - Russell King > Moved hwif.h to this patch, Sparse flagged warning - Simon Horman > Defined macros for hardcoded values TDPS etc - Serge Semin > Read number of PDMAs/VDMAs from hardware - Serge Semin > Patch3 (v3 Patch2): Hooks in hardware interface handling for dw25gmac > Resolved user_version quirks questions - Serge, Russell, Andrew > Added new stmmac_hw entry for DW25GMAC. - Serge > Added logic to override synopsis_dev_id by glue driver. > Patch4 (v3 Patch3): Adds PCI driver for BCM8958x device > Define bitmmap macros for hardcoded values - Andrew Lunn > Added per device software node - Andrew Lunn > Patch5(new/split): Adds BCM8958x driver to build system Thanks for the series update and I'm sorry for abandoning the v3 discussion. I had to work on another urgent task. I'll get back to reviewing your patch set on the next week. -Serge(y) > > v2->v3: > Addressed v2 comments from Andrew, Jakub, Russel and Simon. > Based on suggestion by Russel and Andrew, added software node to create > phylink in fixed-link mode. > Moved dwxgmac4 specific functions to new files dwxgmac4.c and dwxgmac4.h > in stmmac core module. > Reorganized the code to use the existing glue logic support for xgmac in > hwif.c and override ops functions for dwxgmac4 specific functions. > The patch is split into three parts. > Patch#1 Adds dma_ops for dwxgmac4 in stmmac core > Patch#2 Hooks in the hardware interface handling for dwxgmac4 > Patch#3 Adds PCI driver for BCM8958x device > https://lore.kernel.org/netdev/20240802031822.1862030-1-jitendra.vegiraju@broadcom.com/ > > v1->v2: > Minor fixes to address coding style issues. > Sent v2 too soon by mistake, without waiting for review comments. > Received feedback on this version. > https://lore.kernel.org/netdev/20240511015924.41457-1-jitendra.vegiraju@broadcom.com/ > > v1: > https://lore.kernel.org/netdev/20240510000331.154486-1-jitendra.vegiraju@broadcom.com/ > > Jitendra Vegiraju (5): > Add HDMA mapping for dw25gmac support > Add basic dw25gmac support to stmmac core > Integrate dw25gmac into stmmac hwif handling > Add PCI driver support for BCM8958x > Add BCM8958x driver to build system > > MAINTAINERS | 8 + > drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 + > drivers/net/ethernet/stmicro/stmmac/Makefile | 3 +- > drivers/net/ethernet/stmicro/stmmac/common.h | 2 + > .../net/ethernet/stmicro/stmmac/dw25gmac.c | 173 ++++++ > .../net/ethernet/stmicro/stmmac/dw25gmac.h | 90 +++ > .../net/ethernet/stmicro/stmmac/dwmac-brcm.c | 530 ++++++++++++++++++ > .../ethernet/stmicro/stmmac/dwxgmac2_dma.c | 31 + > drivers/net/ethernet/stmicro/stmmac/hwif.c | 25 +- > drivers/net/ethernet/stmicro/stmmac/hwif.h | 1 + > drivers/net/ethernet/stmicro/stmmac/stmmac.h | 1 + > include/linux/stmmac.h | 50 ++ > 12 files changed, 922 insertions(+), 3 deletions(-) > create mode 100644 drivers/net/ethernet/stmicro/stmmac/dw25gmac.c > create mode 100644 drivers/net/ethernet/stmicro/stmmac/dw25gmac.h > create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c > > -- > 2.34.1 >
From: Jitendra Vegiraju <jitendra.vegiraju@broadcom.com> This patchset adds basic PCI ethernet device driver support for Broadcom BCM8958x Automotive Ethernet switch SoC devices. This SoC device has PCIe ethernet MAC attached to an integrated ethernet switch using XGMII interface. The PCIe ethernet controller is presented to the Linux host as PCI network device. The following block diagram gives an overview of the application. +=================================+ | Host CPU/Linux | +=================================+ || PCIe || +==========================================+ | +--------------+ | | | PCIE Endpoint| | | | Ethernet | | | | Controller | | | | DMA | | | +--------------+ | | | MAC | BCM8958X | | +--------------+ SoC | | || XGMII | | || | | +--------------+ | | | Ethernet | | | | switch | | | +--------------+ | | || || || || | +==========================================+ || || || || More external interfaces The MAC block on BCM8958x is based on Synopsis XGMAC 4.00a core. This MAC IP introduces new DMA architecture called Hyper-DMA for virtualization scalability. Driver functionality specific to new MAC (DW25GMAC) is implemented in new file dw25gmac.c. Management of integrated ethernet switch on this SoC is not handled by the PCIe interface. This SoC device has PCIe ethernet MAC directly attached to an integrated ethernet switch using XGMII interface. v3->v4: Based on Serge's questions, received a confirmation from Synopsis that the MAC IP is indeed the new 25GMAC design. Renamed all references of XGMAC4 to 25GMAC. The patch series is rearranged slightly as follows. Patch1 (new): Define HDMA mapping data structure in kernel's stmmac.h Patch2 (v3 Patch1): Adds dma_ops for dw25gmac in stmmac core Renamed new files dwxgmac4.* to dw25gmac.* - Serge Semin Defined new Synopsis version and device id macros for DW25GMAC. Coverted bit operations to FIELD_PREP macros - Russell King Moved hwif.h to this patch, Sparse flagged warning - Simon Horman Defined macros for hardcoded values TDPS etc - Serge Semin Read number of PDMAs/VDMAs from hardware - Serge Semin Patch3 (v3 Patch2): Hooks in hardware interface handling for dw25gmac Resolved user_version quirks questions - Serge, Russell, Andrew Added new stmmac_hw entry for DW25GMAC. - Serge Added logic to override synopsis_dev_id by glue driver. Patch4 (v3 Patch3): Adds PCI driver for BCM8958x device Define bitmmap macros for hardcoded values - Andrew Lunn Added per device software node - Andrew Lunn Patch5(new/split): Adds BCM8958x driver to build system v2->v3: Addressed v2 comments from Andrew, Jakub, Russel and Simon. Based on suggestion by Russel and Andrew, added software node to create phylink in fixed-link mode. Moved dwxgmac4 specific functions to new files dwxgmac4.c and dwxgmac4.h in stmmac core module. Reorganized the code to use the existing glue logic support for xgmac in hwif.c and override ops functions for dwxgmac4 specific functions. The patch is split into three parts. Patch#1 Adds dma_ops for dwxgmac4 in stmmac core Patch#2 Hooks in the hardware interface handling for dwxgmac4 Patch#3 Adds PCI driver for BCM8958x device https://lore.kernel.org/netdev/20240802031822.1862030-1-jitendra.vegiraju@broadcom.com/ v1->v2: Minor fixes to address coding style issues. Sent v2 too soon by mistake, without waiting for review comments. Received feedback on this version. https://lore.kernel.org/netdev/20240511015924.41457-1-jitendra.vegiraju@broadcom.com/ v1: https://lore.kernel.org/netdev/20240510000331.154486-1-jitendra.vegiraju@broadcom.com/ Jitendra Vegiraju (5): Add HDMA mapping for dw25gmac support Add basic dw25gmac support to stmmac core Integrate dw25gmac into stmmac hwif handling Add PCI driver support for BCM8958x Add BCM8958x driver to build system MAINTAINERS | 8 + drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 + drivers/net/ethernet/stmicro/stmmac/Makefile | 3 +- drivers/net/ethernet/stmicro/stmmac/common.h | 2 + .../net/ethernet/stmicro/stmmac/dw25gmac.c | 173 ++++++ .../net/ethernet/stmicro/stmmac/dw25gmac.h | 90 +++ .../net/ethernet/stmicro/stmmac/dwmac-brcm.c | 530 ++++++++++++++++++ .../ethernet/stmicro/stmmac/dwxgmac2_dma.c | 31 + drivers/net/ethernet/stmicro/stmmac/hwif.c | 25 +- drivers/net/ethernet/stmicro/stmmac/hwif.h | 1 + drivers/net/ethernet/stmicro/stmmac/stmmac.h | 1 + include/linux/stmmac.h | 50 ++ 12 files changed, 922 insertions(+), 3 deletions(-) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dw25gmac.c create mode 100644 drivers/net/ethernet/stmicro/stmmac/dw25gmac.h create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-brcm.c