[PATCH] bcm43xx: Partially fix PIO code. Add Kconfig option for PIO or DMA mode (or both).
Signed-off-by: Michael Buesch <mbuesch@freenet.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/bcm43xx/Kconfig b/drivers/net/wireless/bcm43xx/Kconfig
new file mode 100644
index 0000000..d8d2315
--- /dev/null
+++ b/drivers/net/wireless/bcm43xx/Kconfig
@@ -0,0 +1,57 @@
+config BCM43XX
+ tristate "Broadcom BCM43xx wireless support"
+ depends on PCI && IEEE80211 && IEEE80211_SOFTMAC && NET_RADIO && EXPERIMENTAL
+ select FW_LOADER
+ ---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
+config BCM43XX_PIO
+ bool
+
+choice
+ prompt "BCM43xx data transfer mode"
+ depends on BCM43XX
+ default BCM43XX_DMA_AND_PIO
+
+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).
+ Only use PIO, if DMA does not work for you.
+
+endchoice