60  *  non UDMA devices restrict each others performance. It also has a
95 	u16	udma[2];		/* Cached UDMA values (per drive) */  member
143  *	it821x_program_udma	-	program the UDMA registers
148  *	Program the UDMA timing for this drive according to the
150  *	the errata on the 0x10 revision. The UDMA errata is partly handled
162 	/* Program UDMA timing bits */  in it821x_program_udma()
229 	 *	Reprogram the UDMA/PIO of the pair drive for the switch  in it821x_clock_strategy()
232 	if (pair && itdev->udma[1-unit] != UDMA_OFF) {  in it821x_clock_strategy()
233 		it821x_program_udma(ap, pair, itdev->udma[1-unit]);  in it821x_clock_strategy()
237 	 *	Reprogram the UDMA/PIO of our drive for the switch.  in it821x_clock_strategy()
240 	if (itdev->udma[unit] != UDMA_OFF) {  in it821x_clock_strategy()
241 		it821x_program_udma(ap, adev, itdev->udma[unit]);  in it821x_clock_strategy()
279  *	to use. If UDMA is used as is hopefully the usual case then the
289 	static const u16 udma[]	= 	{ 0x4433, 0x4231, 0x3121, 0x2121, 0x1111, 0x2211, 0x1111 };  in it821x_passthru_set_dmamode()  local
302 		itdev->want[unit][0] = 3;	/* UDMA is high priority */  in it821x_passthru_set_dmamode()
304 		itdev->udma[unit] = udma[mode_wanted];  in it821x_passthru_set_dmamode()
306 			itdev->udma[unit] |= 0x8080;	/* UDMA 5/6 select on */  in it821x_passthru_set_dmamode()
308 		/* UDMA on. Again revision 0x10 must do the pair */  in it821x_passthru_set_dmamode()
316 		it821x_program_udma(ap, adev, itdev->udma[unit]);  in it821x_passthru_set_dmamode()
323 		itdev->udma[unit] = UDMA_OFF;  in it821x_passthru_set_dmamode()
325 		/* UDMA bits off - Revision 0x10 do them in pairs */  in it821x_passthru_set_dmamode()
354 	else if (itdev->udma[unit] != UDMA_OFF && itdev->timing10)  in it821x_passthru_bmdma_start()
355 		it821x_program_udma(ap, adev, itdev->udma[unit]);  in it821x_passthru_bmdma_start()
625 		mtype = "UDMA";  in it821x_display_disk()
905 		/* No UDMA */  in it821x_init_one()