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sfc: Use DMA_BIT_MASK() instead of our own DMA mask macros 

Also change type of efx_nic_type::max_dma_mask to u64, matching
pci_dma_supported() parameter type.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Ben Hutchings 2008-05-16 21:18:48 +01:00 committed by Jeff Garzik
parent 5b9e207ced
commit 9bbd7d9a35
3 changed files with 3 additions and 15 deletions
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3
drivers/net/sfc/bitfield.h
View File

@ -501,8 +501,5 @@ typedef union efx_oword {
#define DMA_ADDR_T_WIDTH (8 * sizeof(dma_addr_t))
#define EFX_DMA_TYPE_WIDTH(width) \
(((width) < DMA_ADDR_T_WIDTH) ? (width) : DMA_ADDR_T_WIDTH)
#define EFX_DMA_MAX_MASK ((DMA_ADDR_T_WIDTH == 64) ? \
~((u64) 0) : ~((u32) 0))
#define EFX_DMA_MASK(mask) ((mask) & EFX_DMA_MAX_MASK)
#endif /* EFX_BITFIELD_H */

13
drivers/net/sfc/falcon.c
View File

@ -116,17 +116,8 @@ MODULE_PARM_DESC(rx_xon_thresh_bytes, "RX fifo XON threshold");
**************************************************************************
*/
/* DMA address mask (up to 46-bit, avoiding compiler warnings)
*
* Note that it is possible to have a platform with 64-bit longs and
* 32-bit DMA addresses, or vice versa. EFX_DMA_MASK takes care of the
* platform DMA mask.
*/
#if BITS_PER_LONG == 64
#define FALCON_DMA_MASK EFX_DMA_MASK(0x00003fffffffffffUL)
#else
#define FALCON_DMA_MASK EFX_DMA_MASK(0x00003fffffffffffULL)
#endif
/* DMA address mask */
#define FALCON_DMA_MASK DMA_BIT_MASK(46)
/* TX DMA length mask (13-bit) */
#define FALCON_TX_DMA_MASK (4096 - 1)

2
drivers/net/sfc/net_driver.h
View File

@ -800,7 +800,7 @@ struct efx_nic_type {
unsigned int txd_ring_mask;
unsigned int rxd_ring_mask;
unsigned int evq_size;
dma_addr_t max_dma_mask;
u64 max_dma_mask;
unsigned int tx_dma_mask;
unsigned bug5391_mask;