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c23be918c5
Prabhakar <prabhakar.csengg@gmail.com> says:
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
non-coherent DMA support for AX45MP
====================================
On the Andes AX45MP core, cache coherency is a specification option so it
may not be supported. In this case DMA will fail. To get around with this
issue this patch series does the below:
1] Andes alternative ports is implemented as errata which checks if the
IOCP is missing and only then applies to CMO errata. One vendor specific
SBI EXT (ANDES_SBI_EXT_IOCP_SW_WORKAROUND) is implemented as part of
errata.
Below are the configs which Andes port provides (and are selected by
RZ/Five):
- ERRATA_ANDES
- ERRATA_ANDES_CMO
OpenSBI patch supporting ANDES_SBI_EXT_IOCP_SW_WORKAROUND SBI is now
part v1.3 release.
2] Andes AX45MP core has a Programmable Physical Memory Attributes (PMA)
block that allows dynamic adjustment of memory attributes in the runtime.
It contains a configurable amount of PMA entries implemented as CSR
registers to control the attributes of memory locations in interest.
OpenSBI configures the PMA regions as required and creates a reserve memory
node and propagates it to the higher boot stack.
Currently OpenSBI (upstream) configures the required PMA region and passes
this a shared DMA pool to Linux.
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
pma_resv0@58000000 {
compatible = "shared-dma-pool";
reg = <0x0 0x58000000 0x0 0x08000000>;
no-map;
linux,dma-default;
};
};
The above shared DMA pool gets appended to Linux DTB so the DMA memory
requests go through this region.
3] We provide callbacks to synchronize specific content between memory and
cache.
4] RZ/Five SoC selects the below configs
- AX45MP_L2_CACHE
- DMA_GLOBAL_POOL
- ERRATA_ANDES
- ERRATA_ANDES_CMO
----------x---------------------x--------------------x---------------x----
* b4-shazam-merge:
soc: renesas: Kconfig: Select the required configs for RZ/Five SoC
cache: Add L2 cache management for Andes AX45MP RISC-V core
dt-bindings: cache: andestech,ax45mp-cache: Add DT binding documentation for L2 cache controller
riscv: mm: dma-noncoherent: nonstandard cache operations support
riscv: errata: Add Andes alternative ports
riscv: asm: vendorid_list: Add Andes Technology to the vendors list
Link: https://lore.kernel.org/r/20230818135723.80612-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
202 lines
5.5 KiB
Makefile
202 lines
5.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the Linux kernel device drivers.
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#
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# 15 Sep 2000, Christoph Hellwig <hch@infradead.org>
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# Rewritten to use lists instead of if-statements.
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#
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# Some driver Makefiles miss $(srctree)/ for include directive.
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ifdef building_out_of_srctree
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MAKEFLAGS += --include-dir=$(srctree)
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endif
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obj-y += cache/
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obj-y += irqchip/
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obj-y += bus/
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obj-$(CONFIG_GENERIC_PHY) += phy/
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# GPIO must come after pinctrl as gpios may need to mux pins etc
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obj-$(CONFIG_PINCTRL) += pinctrl/
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obj-$(CONFIG_GPIOLIB) += gpio/
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obj-y += pwm/
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obj-y += pci/
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obj-$(CONFIG_PARISC) += parisc/
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obj-$(CONFIG_RAPIDIO) += rapidio/
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obj-y += video/
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obj-y += idle/
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# IPMI must come before ACPI in order to provide IPMI opregion support
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obj-y += char/ipmi/
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obj-$(CONFIG_ACPI) += acpi/
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# PnP must come after ACPI since it will eventually need to check if acpi
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# was used and do nothing if so
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obj-$(CONFIG_PNP) += pnp/
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obj-y += amba/
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obj-y += clk/
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# Many drivers will want to use DMA so this has to be made available
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# really early.
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obj-$(CONFIG_DMADEVICES) += dma/
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# SOC specific infrastructure drivers.
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obj-y += soc/
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obj-$(CONFIG_PM_GENERIC_DOMAINS) += genpd/
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obj-y += virtio/
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obj-$(CONFIG_VDPA) += vdpa/
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obj-$(CONFIG_XEN) += xen/
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# regulators early, since some subsystems rely on them to initialize
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obj-$(CONFIG_REGULATOR) += regulator/
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# reset controllers early, since gpu drivers might rely on them to initialize
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obj-$(CONFIG_RESET_CONTROLLER) += reset/
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# tty/ comes before char/ so that the VT console is the boot-time
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# default.
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obj-y += tty/
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obj-y += char/
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# iommu/ comes before gpu as gpu are using iommu controllers
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obj-y += iommu/
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# gpu/ comes after char for AGP vs DRM startup and after iommu
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obj-y += gpu/
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obj-$(CONFIG_CONNECTOR) += connector/
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# i810fb and intelfb depend on char/agp/
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obj-$(CONFIG_FB_I810) += video/fbdev/i810/
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obj-$(CONFIG_FB_INTEL) += video/fbdev/intelfb/
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obj-$(CONFIG_PARPORT) += parport/
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obj-y += base/ block/ misc/ mfd/ nfc/
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obj-$(CONFIG_LIBNVDIMM) += nvdimm/
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obj-y += dax/
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obj-$(CONFIG_DMA_SHARED_BUFFER) += dma-buf/
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obj-$(CONFIG_NUBUS) += nubus/
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obj-y += cxl/
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obj-y += macintosh/
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obj-y += scsi/
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obj-y += nvme/
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obj-$(CONFIG_ATA) += ata/
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obj-$(CONFIG_TARGET_CORE) += target/
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obj-$(CONFIG_MTD) += mtd/
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obj-$(CONFIG_SPI) += spi/
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obj-$(CONFIG_SPMI) += spmi/
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obj-$(CONFIG_HSI) += hsi/
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obj-$(CONFIG_SLIMBUS) += slimbus/
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obj-y += net/
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obj-$(CONFIG_ATM) += atm/
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obj-$(CONFIG_FUSION) += message/
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obj-y += firewire/
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obj-$(CONFIG_UIO) += uio/
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obj-$(CONFIG_VFIO) += vfio/
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obj-y += cdrom/
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obj-y += auxdisplay/
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obj-$(CONFIG_PCCARD) += pcmcia/
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obj-$(CONFIG_DIO) += dio/
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obj-$(CONFIG_SBUS) += sbus/
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obj-$(CONFIG_ZORRO) += zorro/
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obj-$(CONFIG_ATA_OVER_ETH) += block/aoe/
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obj-$(CONFIG_TC) += tc/
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obj-$(CONFIG_USB_PHY) += usb/
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obj-$(CONFIG_USB) += usb/
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obj-$(CONFIG_USB_SUPPORT) += usb/
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obj-$(CONFIG_PCI) += usb/
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obj-$(CONFIG_USB_GADGET) += usb/
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obj-$(CONFIG_OF) += usb/
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obj-$(CONFIG_SERIO) += input/serio/
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obj-$(CONFIG_GAMEPORT) += input/gameport/
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obj-$(CONFIG_INPUT) += input/
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obj-$(CONFIG_RTC_LIB) += rtc/
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obj-y += i2c/ i3c/ media/
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obj-$(CONFIG_PPS) += pps/
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obj-y += ptp/
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obj-$(CONFIG_W1) += w1/
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obj-y += power/
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obj-$(CONFIG_HWMON) += hwmon/
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obj-$(CONFIG_THERMAL) += thermal/
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obj-$(CONFIG_WATCHDOG) += watchdog/
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obj-$(CONFIG_MD) += md/
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obj-$(CONFIG_BT) += bluetooth/
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obj-$(CONFIG_ACCESSIBILITY) += accessibility/
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obj-$(CONFIG_ISDN) += isdn/
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obj-$(CONFIG_EDAC) += edac/
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obj-$(CONFIG_EISA) += eisa/
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obj-$(CONFIG_PM_OPP) += opp/
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obj-$(CONFIG_CPU_FREQ) += cpufreq/
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obj-$(CONFIG_CPU_IDLE) += cpuidle/
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obj-y += mmc/
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obj-y += ufs/
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obj-$(CONFIG_MEMSTICK) += memstick/
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obj-$(CONFIG_NEW_LEDS) += leds/
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obj-$(CONFIG_INFINIBAND) += infiniband/
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obj-y += firmware/
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obj-$(CONFIG_CRYPTO) += crypto/
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obj-$(CONFIG_SUPERH) += sh/
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obj-y += clocksource/
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obj-$(CONFIG_DCA) += dca/
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obj-$(CONFIG_HID_SUPPORT) += hid/
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obj-$(CONFIG_PPC_PS3) += ps3/
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obj-$(CONFIG_OF) += of/
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obj-$(CONFIG_SSB) += ssb/
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obj-$(CONFIG_BCMA) += bcma/
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obj-$(CONFIG_VHOST_RING) += vhost/
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obj-$(CONFIG_VHOST_IOTLB) += vhost/
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obj-$(CONFIG_VHOST) += vhost/
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obj-$(CONFIG_VLYNQ) += vlynq/
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obj-$(CONFIG_GREYBUS) += greybus/
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obj-$(CONFIG_COMEDI) += comedi/
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obj-$(CONFIG_STAGING) += staging/
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obj-y += platform/
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obj-$(CONFIG_MAILBOX) += mailbox/
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obj-$(CONFIG_HWSPINLOCK) += hwspinlock/
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obj-$(CONFIG_REMOTEPROC) += remoteproc/
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obj-$(CONFIG_RPMSG) += rpmsg/
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obj-$(CONFIG_SOUNDWIRE) += soundwire/
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# Virtualization drivers
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obj-$(CONFIG_VIRT_DRIVERS) += virt/
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obj-$(subst m,y,$(CONFIG_HYPERV)) += hv/
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obj-$(CONFIG_PM_DEVFREQ) += devfreq/
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obj-$(CONFIG_EXTCON) += extcon/
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obj-$(CONFIG_MEMORY) += memory/
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obj-$(CONFIG_IIO) += iio/
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obj-$(CONFIG_IPACK_BUS) += ipack/
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obj-$(CONFIG_NTB) += ntb/
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obj-$(CONFIG_POWERCAP) += powercap/
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obj-$(CONFIG_MCB) += mcb/
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obj-$(CONFIG_PERF_EVENTS) += perf/
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obj-$(CONFIG_RAS) += ras/
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obj-$(CONFIG_USB4) += thunderbolt/
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obj-$(CONFIG_CORESIGHT) += hwtracing/coresight/
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obj-y += hwtracing/intel_th/
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obj-$(CONFIG_STM) += hwtracing/stm/
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obj-$(CONFIG_HISI_PTT) += hwtracing/ptt/
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obj-y += android/
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obj-$(CONFIG_NVMEM) += nvmem/
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obj-$(CONFIG_FPGA) += fpga/
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obj-$(CONFIG_FSI) += fsi/
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obj-$(CONFIG_TEE) += tee/
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obj-$(CONFIG_MULTIPLEXER) += mux/
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obj-$(CONFIG_SIOX) += siox/
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obj-$(CONFIG_GNSS) += gnss/
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obj-$(CONFIG_INTERCONNECT) += interconnect/
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obj-$(CONFIG_COUNTER) += counter/
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obj-$(CONFIG_MOST) += most/
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obj-$(CONFIG_PECI) += peci/
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obj-$(CONFIG_HTE) += hte/
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obj-$(CONFIG_DRM_ACCEL) += accel/
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obj-$(CONFIG_CDX_BUS) += cdx/
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obj-$(CONFIG_S390) += s390/
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