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9e3bd91908
This makes the b43 driver just automatically fall back to PIO mode when DMA doesn't work. The driver already told the user to do it, so rather than have the user reload the module with a new flag, just make the driver do it automatically. We keep the message as an indication that something is wrong, but now just automatically fall back to the hopefully working PIO case. (Some post-2.6.33 merge fixups by Larry Finger <Larry.Finger@lwfinger.net> and yours truly... -- JWL) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
149 lines
4.4 KiB
Plaintext
149 lines
4.4 KiB
Plaintext
config B43
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tristate "Broadcom 43xx wireless support (mac80211 stack)"
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depends on SSB_POSSIBLE && MAC80211 && HAS_DMA
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select SSB
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select FW_LOADER
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---help---
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b43 is a driver for the Broadcom 43xx series wireless devices.
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Check "lspci" for something like
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"Broadcom Corporation BCM43XX 802.11 Wireless LAN Controller"
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to determine whether you own such a device.
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This driver supports the new BCM43xx IEEE 802.11G devices, but not
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the old IEEE 802.11B devices. Old devices are supported by
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the b43legacy driver.
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Note that this has nothing to do with the standard that your AccessPoint
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supports (A, B, G or a combination).
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IEEE 802.11G devices can talk to IEEE 802.11B AccessPoints.
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It is safe to include both b43 and b43legacy as the underlying glue
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layer will automatically load the correct version for your device.
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This driver uses V4 firmware, which must be installed separately using
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b43-fwcutter.
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This driver can be built as a module (recommended) that will be called "b43".
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If unsure, say M.
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# Auto-select SSB PCI-HOST support, if possible
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config B43_PCI_AUTOSELECT
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bool
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depends on B43 && SSB_PCIHOST_POSSIBLE
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select SSB_PCIHOST
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select SSB_B43_PCI_BRIDGE
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default y
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# Auto-select SSB PCICORE driver, if possible
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config B43_PCICORE_AUTOSELECT
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bool
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depends on B43 && SSB_DRIVER_PCICORE_POSSIBLE
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select SSB_DRIVER_PCICORE
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default y
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config B43_PCMCIA
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bool "Broadcom 43xx PCMCIA device support"
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depends on B43 && SSB_PCMCIAHOST_POSSIBLE
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select SSB_PCMCIAHOST
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---help---
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Broadcom 43xx PCMCIA device support.
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Support for 16bit PCMCIA devices.
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Please note that most PC-CARD devices are _NOT_ 16bit PCMCIA
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devices, but 32bit CardBUS devices. CardBUS devices are supported
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out of the box by b43.
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With this config option you can drive b43 cards in
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CompactFlash formfactor in a PCMCIA adaptor.
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CF b43 cards can sometimes be found in handheld PCs.
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It's safe to select Y here, even if you don't have a B43 PCMCIA device.
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If unsure, say N.
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config B43_SDIO
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bool "Broadcom 43xx SDIO device support (EXPERIMENTAL)"
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depends on B43 && SSB_SDIOHOST_POSSIBLE && EXPERIMENTAL
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select SSB_SDIOHOST
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---help---
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Broadcom 43xx device support for Soft-MAC SDIO devices.
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With this config option you can drive Soft-MAC b43 cards with a
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Secure Digital I/O interface.
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This includes the WLAN daughter card found on the Nintendo Wii
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video game console.
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Note that this does not support Broadcom 43xx Full-MAC devices.
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It's safe to select Y here, even if you don't have a B43 SDIO device.
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If unsure, say N.
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#Data transfers to the device via PIO. We want it as a fallback even
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# if we can do DMA.
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config B43_PIO
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bool
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depends on B43
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select SSB_BLOCKIO
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default y
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config B43_NPHY
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bool "Pre IEEE 802.11n support (BROKEN)"
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depends on B43 && EXPERIMENTAL && BROKEN
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---help---
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Support for the IEEE 802.11n draft.
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THIS IS BROKEN AND DOES NOT WORK YET.
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SAY N.
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config B43_PHY_LP
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bool "Support for low-power (LP-PHY) devices (EXPERIMENTAL)"
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depends on B43 && EXPERIMENTAL
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default y
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---help---
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Support for the LP-PHY.
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The LP-PHY is a low-power PHY built into some notebooks
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and embedded devices. It supports 802.11a/g
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(802.11a support is optional, and currently disabled).
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# This config option automatically enables b43 LEDS support,
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# if it's possible.
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config B43_LEDS
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bool
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depends on B43 && MAC80211_LEDS && (LEDS_CLASS = y || LEDS_CLASS = B43)
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default y
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# This config option automatically enables b43 HW-RNG support,
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# if the HW-RNG core is enabled.
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config B43_HWRNG
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bool
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depends on B43 && (HW_RANDOM = y || HW_RANDOM = B43)
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default y
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config B43_DEBUG
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bool "Broadcom 43xx debugging"
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depends on B43
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---help---
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Broadcom 43xx debugging.
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This adds additional runtime sanity checks and statistics to the driver.
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These checks and statistics might me expensive and hurt runtime performance
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of your system.
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This also adds the b43 debugfs interface.
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Do not enable this, unless you are debugging the driver.
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Say N, if you are a distributor or user building a release kernel
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for production use.
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Only say Y, if you are debugging a problem in the b43 driver sourcecode.
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config B43_FORCE_PIO
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bool "Force usage of PIO instead of DMA"
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depends on B43 && B43_DEBUG
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---help---
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This will disable DMA and always enable PIO instead.
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Say N!
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This is only for debugging the PIO engine code. You do
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_NOT_ want to enable this.
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