[PATCH net-next v2 0/8] net: qualcomm: ipqess: introduce Qualcomm IPQESS driver

Romain Gantois
2023-11-14T09:08:10Z

Hello everyone,

This is the 2nd iteration on the Qualcomm IPQ4019 Ethernet Switch Subsystem
driver.

Notable changes in v2:
- Refactored the PSGMII calibration procedure to exclude
PHY-model-specific code from the switch driver. Added two new callbacks
to the phy_driver struct to enable PHY-agnostic calibration control from
the MAC driver.
- Modified the EDMA Ethernet driver to use page_pool for skb handling.
- Refactored several qca8k-common.c functions to enable calling them from
the IPQESS driver rather than reimplementing them.

The IPQ4019 SoC integrates a modified version of the QCA8K Ethernet switch.
One major difference with the original switch IP is that port tags are
passed to the integrated Ethernet controller out-of-band.

Previous DSA versions of this driver were rejected because they required
adding out-of-band tagging support to the DSA subsystem. Therefore, we
rewrote the driver as a pure switchdev module, which shares a common
backend library with the current QCA8K driver.

The main driver components are:
- ipqess_switch.c which registers and configures the integrated switch
- ipqess_port.c which creates net devices for each one of the front-facing
ports.
- ipqess_edma.c which handles the integrated EDMA Ethernet controller
linked to the CPU port.
- drivers/net/dsa/qca/qca8k-common.c which defines low-level ESS access
methods common to this driver and the original DSA QCA8K driver.

Thanks to the people from Sartura for providing us hardware and working on
the base QCA8K driver, and to Maxime for his work on the EDMA code.

Best regards,

Romain

Romain Gantois (8):
dt-bindings: net: Introduce the Qualcomm IPQESS Ethernet switch
net: dsa: qca8k: Make the QCA8K hardware library available globally
net: qualcomm: ipqess: introduce the Qualcomm IPQESS driver
net: qualcomm: ipqess: Add Ethtool ops to IPQESS port netdevices
net: qualcomm: ipqess: add bridge offloading features to the IPQESS
driver
net: phy: add calibration callbacks to phy_driver
net: qualcomm: ipqess: add a PSGMII calibration procedure to the
IPQESS driver
ARM: dts: qcom: ipq4019: Add description for the IPQ4019 ESS EDMA and
switch

.../bindings/net/qcom,ipq4019-ess.yaml | 152 ++
MAINTAINERS | 7 +
.../boot/dts/qcom/qcom-ipq4018-ap120c-ac.dtsi | 13 +
arch/arm/boot/dts/qcom/qcom-ipq4019.dtsi | 94 +
drivers/net/dsa/qca/Kconfig | 10 +
drivers/net/dsa/qca/Makefile | 5 +-
drivers/net/dsa/qca/qca8k-8xxx.c | 51 +-
drivers/net/dsa/qca/qca8k-common.c | 126 +-
drivers/net/dsa/qca/qca8k-leds.c | 2 +-
drivers/net/ethernet/qualcomm/Kconfig | 15 +
drivers/net/ethernet/qualcomm/Makefile | 2 +
drivers/net/ethernet/qualcomm/ipqess/Makefile | 8 +
.../ethernet/qualcomm/ipqess/ipqess_calib.c | 156 ++
.../ethernet/qualcomm/ipqess/ipqess_edma.c | 1195 ++++++++++++
.../ethernet/qualcomm/ipqess/ipqess_edma.h | 488 +++++
.../ethernet/qualcomm/ipqess/ipqess_ethtool.c | 245 +++
.../qualcomm/ipqess/ipqess_notifiers.c | 306 +++
.../qualcomm/ipqess/ipqess_notifiers.h | 29 +
.../ethernet/qualcomm/ipqess/ipqess_port.c | 1686 +++++++++++++++++
.../ethernet/qualcomm/ipqess/ipqess_port.h | 102 +
.../ethernet/qualcomm/ipqess/ipqess_switch.c | 533 ++++++
.../ethernet/qualcomm/ipqess/ipqess_switch.h | 36 +
.../net/dsa/qca => include/linux/dsa}/qca8k.h | 61 +-
include/linux/phy.h | 28 +
24 files changed, 5296 insertions(+), 54 deletions(-)
create mode 100644 Documentation/devicetree/bindings/net/qcom,ipq4019-ess.yaml
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/Makefile
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_calib.c
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_edma.c
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_edma.h
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_ethtool.c
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_notifiers.c
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_notifiers.h
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_port.c
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_port.h
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_switch.c
create mode 100644 drivers/net/ethernet/qualcomm/ipqess/ipqess_switch.h
rename {drivers/net/dsa/qca => include/linux/dsa}/qca8k.h (90%)

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2.42.0