freebsd-dev/sys/mips
Landon J. Fuller 9ed453245b bhnd(4): Add support for querying DMA address translation parameters
BHND Wi-Fi chipsets and SoCs share a common DMA engine, operating within
backplane address space. To support host DMA on Wi-Fi chipsets, the bridge
core maps host address space onto the backplane; any host addresses must
be translated to their corresponding backplane address.


- Defines a new bhnd_get_dma_translation(9) API to support querying DMA
  address translation parameters from the bhnd(4) bus.
- Extends bhndb(4) to provide DMA translation descriptors from a DMA
  address translation table defined in the host bridge-specific
  bhndb_hwcfg.
- Defines bhndb(4) DMA address translation tables for all supported host
  bridge cores.
- Extends mips/broadcom's bhnd_nexus driver to return an identity (no-op)
  DMA translation descriptor; no translation is required when addressing
  the SoC backplane.

Approved by:	adrian (mentor)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D12582
2017-11-21 23:25:22 +00:00
..
adm5120 Allow setting access-width for UART registers. 2017-02-27 20:08:42 +00:00
alchemy Allow setting access-width for UART registers. 2017-02-27 20:08:42 +00:00
atheros arge: correct bzero sizeof (pointed-to object, not pointer) 2017-08-30 17:38:55 +00:00
beri Remove a couple variables that are unused after r325790. 2017-11-20 22:18:24 +00:00
broadcom bhnd(4): Add support for querying DMA address translation parameters 2017-11-21 23:25:22 +00:00
cavium sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
conf Update several more URLs 2017-10-29 08:17:03 +00:00
gxemul Allow the use of soft-interrupts for sending IPIs. 2016-09-08 17:37:13 +00:00
idt Allow setting access-width for UART registers. 2017-02-27 20:08:42 +00:00
include bhnd(4): implement MIPS and PCI(e) interrupt support 2017-11-21 23:15:20 +00:00
ingenic Add and use a MMC_DECLARE_BRIDGE macro for declaring mmc(4) bridges 2017-03-07 22:42:44 +00:00
malta Allow setting access-width for UART registers. 2017-02-27 20:08:42 +00:00
mediatek [mips] Pin control configuration for MediaTek RT2880 2017-10-31 11:29:16 +00:00
mips bhnd(4): implement MIPS and PCI(e) interrupt support 2017-11-21 23:15:20 +00:00
nlm Fix build: include machine/bus.h before uart.h 2017-03-02 17:09:14 +00:00
rmi sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
rt305x Allow setting access-width for UART registers. 2017-02-27 20:08:42 +00:00
sibyte Convert PCIe Hot Plug to using pci_request_feature 2017-02-25 06:11:59 +00:00