Messages in this thread Patch in this message | | | Date | Mon, 11 Mar 2002 17:10:58 +0300 | From | Ivan Kokshaysky <> | Subject | Re: Busmaster DMA broken in 2.4.18 on Alpha |
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On Mon, Mar 11, 2002 at 12:45:11PM +0100, Kurt Garloff wrote: > Unfortunately, your ISA card does not seem to be able to address 32 bits. > (I guess no non-on-chip ISA adapter will.)
No, the ability to address 32 bits is property of an ISA bridge, not of any particular ISA card or device. Most alphas do have 32-bit ISA DMA.
For that particular driver the following hack should work. However, ideally we should have ISA_DMA_MASK in asm/dma.h defined for all architectures...
Ivan.
--- linux/drivers/net/tokenring/tms380tr.h.orig Fri May 25 20:58:07 2001 +++ linux/drivers/net/tokenring/tms380tr.h Mon Mar 11 15:52:06 2002 @@ -462,7 +462,12 @@ typedef struct { */ /* XXX is there some better way to do this? */ +#if defined(__alpha__) +#define ISA_MAX_ADDRESS (MAX_DMA_ADDRESS - IDENT_ADDR - 1 < 0xffffffff ? \ + MAX_DMA_ADDRESS - IDENT_ADDR - 1 : 0xffffffff) +#else #define ISA_MAX_ADDRESS 0x00ffffff +#endif #define PCI_MAX_ADDRESS 0xffffffff #pragma pack(1) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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