56 static int dma_setup (Scsi_Cmnd *cmd, int dir_in)  in dma_setup()  argument
59     unsigned long addr = virt_to_bus(cmd->SCp.ptr);  in dma_setup()
64     if (addr & HDATA(cmd->host)->dma_xfer_mask ||  in dma_setup()
65 	(!dir_in && mm_end_of_chunk (addr, cmd->SCp.this_residual)))  in dma_setup()
67 	HDATA(cmd->host)->dma_bounce_len = (cmd->SCp.this_residual + 511)  in dma_setup()
71 	    HDATA(cmd->host)->dma_bounce_buffer =  in dma_setup()
72 		scsi_malloc (HDATA(cmd->host)->dma_bounce_len);  in dma_setup()
73 	    HDATA(cmd->host)->dma_buffer_pool = BUF_SCSI_ALLOCED;  in dma_setup()
76 	if ( scsi_alloc_out_of_range || !HDATA(cmd->host)->dma_bounce_buffer) {  in dma_setup()
77 	    HDATA(cmd->host)->dma_bounce_buffer =  in dma_setup()
78 		amiga_chip_alloc(HDATA(cmd->host)->dma_bounce_len,  in dma_setup()
81 	    if(!HDATA(cmd->host)->dma_bounce_buffer)  in dma_setup()
83 		HDATA(cmd->host)->dma_bounce_len = 0;  in dma_setup()
87 	    HDATA(cmd->host)->dma_buffer_pool = BUF_CHIP_ALLOCED;  in dma_setup()
91 	addr = virt_to_bus(HDATA(cmd->host)->dma_bounce_buffer);  in dma_setup()
93 	if (addr & HDATA(cmd->host)->dma_xfer_mask) {  in dma_setup()
95 	    if( HDATA(cmd->host)->dma_buffer_pool == BUF_SCSI_ALLOCED) {  in dma_setup()
96 		scsi_free (HDATA(cmd->host)->dma_bounce_buffer,  in dma_setup()
97 			   HDATA(cmd->host)->dma_bounce_len);  in dma_setup()
100 		amiga_chip_free (HDATA(cmd->host)->dma_bounce_buffer);  in dma_setup()
103 	    HDATA(cmd->host)->dma_bounce_buffer =  in dma_setup()
104 		amiga_chip_alloc(HDATA(cmd->host)->dma_bounce_len,  in dma_setup()
107 	    if(!HDATA(cmd->host)->dma_bounce_buffer)  in dma_setup()
109 		HDATA(cmd->host)->dma_bounce_len = 0;  in dma_setup()
113 	    addr = virt_to_bus(HDATA(cmd->host)->dma_bounce_buffer);  in dma_setup()
114 	    HDATA(cmd->host)->dma_buffer_pool = BUF_CHIP_ALLOCED;  in dma_setup()
119 	    memcpy (HDATA(cmd->host)->dma_bounce_buffer,  in dma_setup()
120 		    cmd->SCp.ptr, cmd->SCp.this_residual);  in dma_setup()
128     HDATA(cmd->host)->dma_dir = dir_in;  in dma_setup()
129     DMA(cmd->host)->CNTR = cntr;  in dma_setup()
132     DMA(cmd->host)->ACR = addr;  in dma_setup()
136 	cache_clear (addr, cmd->SCp.this_residual);  in dma_setup()
139 	cache_push (addr, cmd->SCp.this_residual);  in dma_setup()
141     if ((bank_mask = (~HDATA(cmd->host)->dma_xfer_mask >> 18) & 0x01c0))  in dma_setup()
142 	    DMA(cmd->host)->BANK = bank_mask & (addr >> 18);  in dma_setup()
145     DMA(cmd->host)->ST_DMA = 1;  in dma_setup()