diff options
| author | Michael Buesch <mb@bu3sch.de> | 2008-02-05 12:50:41 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-02-05 14:35:47 -0500 |
| commit | b79caa68c0d48477453a90d12be34b47cb75f3a8 (patch) | |
| tree | 103b22e57178cdfcdab2afd2fbd2d9ca45644fc7 /drivers/net/wireless/b43/dma.h | |
| parent | 532031d7f426eb02f854d13184416cabcb01bdd5 (diff) | |
| download | linux-3.10-b79caa68c0d48477453a90d12be34b47cb75f3a8.tar.gz linux-3.10-b79caa68c0d48477453a90d12be34b47cb75f3a8.tar.bz2 linux-3.10-b79caa68c0d48477453a90d12be34b47cb75f3a8.zip | |
b43: Fix DMA for 30/32-bit DMA engines
This checks if the DMA address is bigger than what the controller can manage.
It will reallocate the buffers in the GFP_DMA zone in that case.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/b43/dma.h')
| -rw-r--r-- | drivers/net/wireless/b43/dma.h | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/net/wireless/b43/dma.h b/drivers/net/wireless/b43/dma.h index 58db03ac536..c0d6b69e650 100644 --- a/drivers/net/wireless/b43/dma.h +++ b/drivers/net/wireless/b43/dma.h @@ -203,6 +203,12 @@ struct b43_dma_ops { void (*set_current_rxslot) (struct b43_dmaring * ring, int slot); }; +enum b43_dmatype { + B43_DMA_30BIT = 30, + B43_DMA_32BIT = 32, + B43_DMA_64BIT = 64, +}; + struct b43_dmaring { /* Lowlevel DMA ops. */ const struct b43_dma_ops *ops; @@ -235,8 +241,8 @@ struct b43_dmaring { int index; /* Boolean. Is this a TX ring? */ bool tx; - /* Boolean. 64bit DMA if true, 32bit DMA otherwise. */ - bool dma64; + /* The type of DMA engine used. */ + enum b43_dmatype type; /* Boolean. Is this ring stopped at ieee80211 level? */ bool stopped; /* Lock, only used for TX. */ @@ -255,8 +261,7 @@ static inline u32 b43_dma_read(struct b43_dmaring *ring, u16 offset) return b43_read32(ring->dev, ring->mmio_base + offset); } -static inline - void b43_dma_write(struct b43_dmaring *ring, u16 offset, u32 value) +static inline void b43_dma_write(struct b43_dmaring *ring, u16 offset, u32 value) { b43_write32(ring->dev, ring->mmio_base + offset, value); } @@ -264,13 +269,6 @@ static inline int b43_dma_init(struct b43_wldev *dev); void b43_dma_free(struct b43_wldev *dev); -int b43_dmacontroller_rx_reset(struct b43_wldev *dev, - u16 dmacontroller_mmio_base, int dma64); -int b43_dmacontroller_tx_reset(struct b43_wldev *dev, - u16 dmacontroller_mmio_base, int dma64); - -u16 b43_dmacontroller_base(int dma64bit, int dmacontroller_idx); - void b43_dma_tx_suspend(struct b43_wldev *dev); void b43_dma_tx_resume(struct b43_wldev *dev); |