1# SPDX-License-Identifier: GPL-2.0-only 2config B43LEGACY 3 tristate "Broadcom 43xx-legacy wireless support (mac80211 stack)" 4 depends on SSB_POSSIBLE && MAC80211 && HAS_DMA 5 select SSB 6 select FW_LOADER 7 help 8 b43legacy is a driver for 802.11b devices from Broadcom (BCM4301 and 9 BCM4303) and early model 802.11g chips (BCM4306 Ver. 2) used in the 10 Linksys WPC54G V1 PCMCIA devices. 11 12 Newer 802.11g and 802.11a devices need b43. 13 14 It is safe to include both b43 and b43legacy as the underlying glue 15 layer will automatically load the correct version for your device. 16 17 This driver uses V3 firmware, which must be installed separately using 18 b43-fwcutter. 19 20 This driver can be built as a module (recommended) that will be 21 called "b43legacy". If unsure, say M. 22 23# Auto-select SSB PCI-HOST support, if possible 24config B43LEGACY_PCI_AUTOSELECT 25 bool 26 depends on B43LEGACY && SSB_PCIHOST_POSSIBLE 27 select SSB_PCIHOST 28 select SSB_B43_PCI_BRIDGE 29 default y 30 31# Auto-select SSB PCICORE driver, if possible 32config B43LEGACY_PCICORE_AUTOSELECT 33 bool 34 depends on B43LEGACY && SSB_DRIVER_PCICORE_POSSIBLE 35 select SSB_DRIVER_PCICORE 36 default y 37 38# LED support 39# This config option automatically enables b43legacy LEDS support, 40# if it's possible. 41config B43LEGACY_LEDS 42 bool 43 depends on B43LEGACY && MAC80211_LEDS && (LEDS_CLASS = y || LEDS_CLASS = B43LEGACY) 44 default y 45 46# This config option automatically enables b43 HW-RNG support, 47# if the HW-RNG core is enabled. 48config B43LEGACY_HWRNG 49 bool 50 depends on B43LEGACY && (HW_RANDOM = y || HW_RANDOM = B43LEGACY) 51 default y 52 53config B43LEGACY_DEBUG 54 bool "Broadcom 43xx-legacy debugging" 55 depends on B43LEGACY 56 default y 57 help 58 Say Y, because this information will help you get the driver running. 59 This option generates a minimum of log output. 60 61config B43LEGACY_DMA 62 bool 63 depends on B43LEGACY 64 65config B43LEGACY_PIO 66 bool 67 depends on B43LEGACY 68 69choice 70 prompt "Broadcom 43xx-legacy data transfer mode" 71 depends on B43LEGACY 72 default B43LEGACY_DMA_AND_PIO_MODE 73 74config B43LEGACY_DMA_AND_PIO_MODE 75 bool "DMA + PIO" 76 select B43LEGACY_DMA 77 select B43LEGACY_PIO 78 help 79 Include both, Direct Memory Access (DMA) and Programmed I/O (PIO) 80 data transfer modes. The mode actually used is selectable through 81 the module parameter "pio". With pio=0 as a module parameter, the 82 default DMA is used, otherwise PIO is used. 83 84 If unsure, choose this option. 85 86config B43LEGACY_DMA_MODE 87 bool "DMA (Direct Memory Access) only" 88 select B43LEGACY_DMA 89 help 90 Only include Direct Memory Access (DMA). 91 This reduces the size of the driver module, by omitting the PIO code. 92 93config B43LEGACY_PIO_MODE 94 bool "PIO (Programmed I/O) only" 95 select B43LEGACY_PIO 96 help 97 Only include Programmed I/O (PIO). 98 This reduces the size of the driver module, by omitting the DMA code. 99 Please note that PIO transfers are slow (compared to DMA). 100 101 Also note that not all devices of the b43legacy series support PIO. 102 103 You should use PIO only if DMA does not work for you. 104 105endchoice 106