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e5a594643a
- replaceme the force_dma flag with a dma_configure bus method. (Nipun Gupta, although one patch is іncorrectly attributed to me due to a git rebase bug) - use GFP_DMA32 more agressively in dma-direct. (Takashi Iwai) - remove PCI_DMA_BUS_IS_PHYS and rely on the dma-mapping API to do the right thing for bounce buffering. - move dma-debug initialization to common code, and apply a few cleanups to the dma-debug code. - cleanup the Kconfig mess around swiotlb selection - swiotlb comment fixup (Yisheng Xie) - a trivial swiotlb fix. (Dan Carpenter) - support swiotlb on RISC-V. (based on a patch from Palmer Dabbelt) - add a new generic dma-noncoherent dma_map_ops implementation and use it for arc, c6x and nds32. - improve scatterlist validity checking in dma-debug. (Robin Murphy) - add a struct device quirk to limit the dma-mask to 32-bit due to bridge/system issues, and switch x86 to use it instead of a local hack for VIA bridges. - handle devices without a dma_mask more gracefully in the dma-direct code. -----BEGIN PGP SIGNATURE----- iQI/BAABCAApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAlsU1hwLHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYPraxAAocC7JiFKW133/VugCtGA1x9uE8DPHealtsWTAeEq KOOB3GxWMU2hKqQ4km5tcfdWoGJvvab6hmDXcitzZGi2JajO7Ae0FwIy3yvxSIKm iH/ON7c4sJt8gKrXYsLVylmwDaimNs4a6xfODoCRgnWuovI2QrrZzupnlzPNsiOC lv8ezzcW+Ay/gvDD/r72psO+w3QELETif/OzR/qTOtvLrVabM06eHmPQ8Wb98smu /UPMMv6/3XwQnxpxpdyqN+p/gUdneXithzT261wTeZ+8gDXmcWBwHGcMBCimcoBi FklW52moazIPIsTysqoNlVFsLGJTeS4p2D3BLAp5NwWYsLv+zHUVZsI1JY/8u5Ox mM11LIfvu9JtUzaqD9SvxlxIeLhhYZZGnUoV3bQAkpHSQhN/xp2YXd5NWSo5ac2O dch83+laZkZgd6ryw6USpt/YTPM/UHBYy7IeGGHX/PbmAke0ZlvA6Rae7kA5DG59 7GaLdwQyrHp8uGFgwze8P+R4POSk1ly73HHLBT/pFKnDD7niWCPAnBzuuEQGJs00 0zuyWLQyzOj1l6HCAcMNyGnYSsMp8Fx0fvEmKR/EYs8O83eJKXi6L9aizMZx4v1J 0wTolUWH6SIIdz474YmewhG5YOLY7mfe9E8aNr8zJFdwRZqwaALKoteRGUxa3f6e zUE= =6Acj -----END PGP SIGNATURE----- Merge tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping updates from Christoph Hellwig: - replace the force_dma flag with a dma_configure bus method. (Nipun Gupta, although one patch is іncorrectly attributed to me due to a git rebase bug) - use GFP_DMA32 more agressively in dma-direct. (Takashi Iwai) - remove PCI_DMA_BUS_IS_PHYS and rely on the dma-mapping API to do the right thing for bounce buffering. - move dma-debug initialization to common code, and apply a few cleanups to the dma-debug code. - cleanup the Kconfig mess around swiotlb selection - swiotlb comment fixup (Yisheng Xie) - a trivial swiotlb fix. (Dan Carpenter) - support swiotlb on RISC-V. (based on a patch from Palmer Dabbelt) - add a new generic dma-noncoherent dma_map_ops implementation and use it for arc, c6x and nds32. - improve scatterlist validity checking in dma-debug. (Robin Murphy) - add a struct device quirk to limit the dma-mask to 32-bit due to bridge/system issues, and switch x86 to use it instead of a local hack for VIA bridges. - handle devices without a dma_mask more gracefully in the dma-direct code. * tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping: (48 commits) dma-direct: don't crash on device without dma_mask nds32: use generic dma_noncoherent_ops nds32: implement the unmap_sg DMA operation nds32: consolidate DMA cache maintainance routines x86/pci-dma: switch the VIA 32-bit DMA quirk to use the struct device flag x86/pci-dma: remove the explicit nodac and allowdac option x86/pci-dma: remove the experimental forcesac boot option Documentation/x86: remove a stray reference to pci-nommu.c core, dma-direct: add a flag 32-bit dma limits dma-mapping: remove unused gfp_t parameter to arch_dma_alloc_attrs dma-debug: check scatterlist segments c6x: use generic dma_noncoherent_ops arc: use generic dma_noncoherent_ops arc: fix arc_dma_{map,unmap}_page arc: fix arc_dma_sync_sg_for_{cpu,device} arc: simplify arc_dma_sync_single_for_{cpu,device} dma-mapping: provide a generic dma-noncoherent implementation dma-mapping: simplify Kconfig dependencies riscv: add swiotlb support riscv: only enable ZONE_DMA32 for 64-bit ... |
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.. | ||
bcma_private.h | ||
core.c | ||
driver_chipcommon_b.c | ||
driver_chipcommon_nflash.c | ||
driver_chipcommon_pflash.c | ||
driver_chipcommon_pmu.c | ||
driver_chipcommon_sflash.c | ||
driver_chipcommon.c | ||
driver_gmac_cmn.c | ||
driver_gpio.c | ||
driver_mips.c | ||
driver_pci_host.c | ||
driver_pci.c | ||
driver_pcie2.c | ||
host_pci.c | ||
host_soc.c | ||
Kconfig | ||
main.c | ||
Makefile | ||
README | ||
scan.c | ||
scan.h | ||
sprom.c | ||
TODO |
Broadcom introduced new bus as replacement for older SSB. It is based on AMBA, however from programming point of view there is nothing AMBA specific we use. Standard AMBA drivers are platform specific, have hardcoded addresses and use AMBA standard fields like CID and PID. In case of Broadcom's cards every device consists of: 1) Broadcom specific AMBA device. It is put on AMBA bus, but can not be treated as standard AMBA device. Reading it's CID or PID can cause machine lockup. 2) AMBA standard devices called ports or wrappers. They have CIDs (AMBA_CID) and PIDs (0x103BB369), but we do not use that info for anything. One of that devices is used for managing Broadcom specific core. Addresses of AMBA devices are not hardcoded in driver and have to be read from EPROM. In this situation we decided to introduce separated bus. It can contain up to 16 devices identified by Broadcom specific fields: manufacturer, id, revision and class.