• Larry Finger's avatar
    b43: Changes to enable BCM4311 rev 02 with wireless core revision 13 · 013978b6
    Larry Finger authored
    The BCM94311MCG rev 02 chip has an 802.11 core with revision 13 and
    has not been supported until now. The changes include the following:
    
    (1) Add the 802.11 rev 13 device to the ssb_device_id table to load b43.
    (2) Add PHY revision 9 to the supported list.
    (3) Change the 2-bit routing code for address extensions to 0b10 rather
        than the 0b01 used for the 32-bit case.
    (4) Remove some magic numbers in the DMA setup.
    
    The DMA implementation for this chip supports full 64-bit addressing with
    one exception. Whenever the Descriptor Ring Buffer is in high memory, a
    fatal DMA error occurs. This problem was not present in 2.6.24-rc2 due
    to code to "Bias the placement of kernel pages at lower PFNs". When
    commit 44048d70
    
     reverted that code, the DMA error appeared. As a "fix",
    use the GFP_DMA flag when allocating the buffer for 64-bit DMA. At present,
    this problem is thought to arise from a hardware error.
    
    This patch has been tested on my system and by Cédric Caumont
    <icare40@hotmail.com>.
    Signed-off-by: default avatarLarry Finger <Larry.Finger@lwfinger.net>
    Acked-by: default avatarMichael Buesch <mb@bu3sch.de>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    013978b6
dma.c 36.9 KB