6af45170c1
The cxgbev/cxlv driver supports Virtual Function devices for Chelsio T4 and T4 adapters. The VF devices share most of their code with the existing PF4 driver (cxgbe/cxl) and as such the VF device driver currently depends on the PF4 driver. Similar to the cxgbe/cxl drivers, the VF driver includes a t4vf/t5vf PCI device driver that attaches to the VF device. It then creates child cxgbev/cxlv devices representing ports assigned to the VF. By default, the PF driver assigns a single port to each VF. t4vf_hw.c contains VF-specific routines from the shared code used to fetch VF-specific parameters from the firmware. t4_vf.c contains the VF-specific PCI device driver and includes its own attach routine. VF devices are required to use a different firmware request when transmitting packets (which in turn requires a different CPL message to encapsulate messages). This alternate firmware request does not permit chaining multiple packets in a single message, so each packet results in a firmware request. In addition, the different CPL message requires more detailed information when enabling hardware checksums, so parse_pkt() on VF devices must examine L2 and L3 headers for all packets (not just TSO packets) for VF devices. Finally, L2 checksums on non-UDP/non-TCP packets do not work reliably (the firmware trashes the IPv4 fragment field), so IPv4 checksums for such packets are calculated in software. Most of the other changes in the non-VF-specific code are to expose various variables and functions private to the PF driver so that they can be used by the VF driver. Note that a limited subset of cxgbetool functions are supported on VF devices including register dumps, scheduler classes, and clearing of statistics. In addition, TOE is not supported on VF devices, only for the PF interfaces. Reviewed by: np MFC after: 2 months Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D7599
113 lines
2.7 KiB
Plaintext
113 lines
2.7 KiB
Plaintext
# $FreeBSD$
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#
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# This file contains machine dependent kernel configuration notes. For
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# machine independent notes, look in /sys/conf/NOTES.
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#
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# Enable the kernel DTrace hooks which are required to load the DTrace
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# kernel modules.
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#
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options KDTRACE_HOOKS
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# DTrace core
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# NOTE: introduces CDDL-licensed components into the kernel
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#device dtrace
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# DTrace modules
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#device dtrace_profile
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#device dtrace_sdt
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#device dtrace_fbt
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#device dtrace_systrace
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#device dtrace_prototype
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#device dtnfscl
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#device dtmalloc
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# Alternatively include all the DTrace modules
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#device dtraceall
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#####################################################################
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# CPU OPTIONS
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# You must specify a machine directive to choose powerpc or powerpc64
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#machine powerpc powerpc[64]
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#
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# You must specify at least one CPU (the one you intend to run on).
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cpu AIM
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#cpu BOOKE_E500
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#cpu BOOKE_PPC440
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options FPU_EMU
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#options MPC85XX
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options POWERMAC #NewWorld Apple PowerMacs
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#options PS3 #Sony Playstation 3
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options PSIM #GDB PSIM ppc simulator
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options MAMBO #IBM Mambo Full System Simulator
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options SC_OFWFB # OFW frame buffer
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# The cpufreq(4) driver provides support for CPU frequency control
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device cpufreq
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# Standard busses
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device agp
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device bm # Apple BMAC (Big Mac Ethernet)
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device glc # Sony Playstation 3 Ethernet
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device kiic # Apple Keywest I2C Controller
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device ofwd # Open Firmware disks
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device adb # Apple Desktop Bus
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device cuda # VIA-CUDA ADB interface
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device ad7417 # PowerMac7,2 temperature sensor
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device ds1631 # PowerMac11,2 temperature sensor
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device ds1775 # PowerMac7,2 temperature sensor
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device fcu # Apple Fan Control Unit
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device max6690 # PowerMac7,2 temperature sensor
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device pmu # Apple Power Management Unit
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device smu # Apple System Management Unit
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device snd_ai2s # Apple I2S Audio
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device snd_davbus # Apple Davbus Audio
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device adm1030 # Apple G4 MDD fan controller
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#####################################################################
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# Devices we don't want to deal with
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nodevice bktr
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nodevice cxgbe # XXX: builds on powerpc64 only.
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nodevice cxgbev
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nodevice fdc
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nodevice ppc
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nodevice splash
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# when splash works enable *_saver
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nodevice blank_saver
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nodevice daemon_saver
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nodevice dragon_saver
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nodevice fade_saver
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nodevice fire_saver
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nodevice green_saver
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nodevice logo_saver
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nodevice rain_saver
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nodevice snake_saver
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nodevice star_saver
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nodevice warp_saver
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nodevice daemon_saver
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nodevice star_saver
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nodevice snake_saver
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# sound
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nodevice snd_cmi
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# wants gdb_cur
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nodevice dcons
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nodevice dcons_crom
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#####################################################################
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# Options we don't want to deal with
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nooption PPC_DEBUG
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nooption PPC_PROBE_CHIPSET
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nooption SC_NO_MODE_CHANGE
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nooption UKBD_DFLT_KEYMAP
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