|  | config BCM43XX | 
|  | tristate "Broadcom BCM43xx wireless support" | 
|  | depends on PCI && IEEE80211 && IEEE80211_SOFTMAC && NET_RADIO && EXPERIMENTAL | 
|  | select FW_LOADER | 
|  | select HW_RANDOM | 
|  | ---help--- | 
|  | This is an experimental driver for the Broadcom 43xx wireless chip, | 
|  | found in the Apple Airport Extreme and various other devices. | 
|  |  | 
|  | config BCM43XX_DEBUG | 
|  | bool "Broadcom BCM43xx debugging (RECOMMENDED)" | 
|  | depends on BCM43XX | 
|  | default y | 
|  | ---help--- | 
|  | Broadcom 43xx debugging messages. | 
|  | Say Y, because the driver is still very experimental and | 
|  | this will help you get it running. | 
|  |  | 
|  | config BCM43XX_DMA | 
|  | bool | 
|  | depends on BCM43XX | 
|  |  | 
|  | config BCM43XX_PIO | 
|  | bool | 
|  | depends on BCM43XX | 
|  |  | 
|  | choice | 
|  | prompt "BCM43xx data transfer mode" | 
|  | depends on BCM43XX | 
|  | default BCM43XX_DMA_AND_PIO_MODE | 
|  |  | 
|  | config BCM43XX_DMA_AND_PIO_MODE | 
|  | bool "DMA + PIO" | 
|  | select BCM43XX_DMA | 
|  | select BCM43XX_PIO | 
|  | ---help--- | 
|  | Include both, Direct Memory Access (DMA) and Programmed I/O (PIO) | 
|  | data transfer modes. | 
|  | The actually used mode is selectable through the module | 
|  | parameter "pio". If the module parameter is pio=0, DMA is used. | 
|  | Otherwise PIO is used. DMA is default. | 
|  |  | 
|  | If unsure, choose this option. | 
|  |  | 
|  | config BCM43XX_DMA_MODE | 
|  | bool "DMA (Direct Memory Access) only" | 
|  | select BCM43XX_DMA | 
|  | ---help--- | 
|  | Only include Direct Memory Access (DMA). | 
|  | This reduces the size of the driver module, by omitting the PIO code. | 
|  |  | 
|  | config BCM43XX_PIO_MODE | 
|  | bool "PIO (Programmed I/O) only" | 
|  | select BCM43XX_PIO | 
|  | ---help--- | 
|  | Only include Programmed I/O (PIO). | 
|  | This reduces the size of the driver module, by omitting the DMA code. | 
|  | Please note that PIO transfers are slow (compared to DMA). | 
|  |  | 
|  | Also note that not all devices of the 43xx series support PIO. | 
|  | The 4306 (Apple Airport Extreme and others) supports PIO, while | 
|  | the 4318 is known to _not_ support PIO. | 
|  |  | 
|  | Only use PIO, if DMA does not work for you. | 
|  |  | 
|  | endchoice |