20  *	ide_xfer_verbose	-	return IDE mode names
21  *	@mode: transfer mode
23  *	Returns a constant string giving the name of the mode
27 const char *ide_xfer_verbose(u8 mode)  in ide_xfer_verbose()  argument
30 	u8 i = mode & 0xf;  in ide_xfer_verbose()
32 	if (mode >= XFER_UDMA_0 && mode <= XFER_UDMA_7)  in ide_xfer_verbose()
34 	else if (mode >= XFER_MW_DMA_0 && mode <= XFER_MW_DMA_4)  in ide_xfer_verbose()
36 	else if (mode >= XFER_SW_DMA_0 && mode <= XFER_SW_DMA_2)  in ide_xfer_verbose()
38 	else if (mode >= XFER_PIO_0 && mode <= XFER_PIO_6)  in ide_xfer_verbose()
40 	else if (mode == XFER_PIO_SLOW)  in ide_xfer_verbose()
50  *	ide_get_best_pio_mode	-	get PIO mode from drive
52  *	@mode_wanted: preferred mode
53  *	@max_mode: highest allowed mode
58  *	Drive PIO mode is auto-selected if 255 is passed as mode_wanted.
122 int ide_set_pio_mode(ide_drive_t *drive, const u8 mode)  in ide_set_pio_mode()  argument
135 	 * set transfer mode on the device in ->set_pio_mode method...  in ide_set_pio_mode()
138 		drive->pio_mode = mode;  in ide_set_pio_mode()
144 		if (ide_config_drive_speed(drive, mode))  in ide_set_pio_mode()
146 		drive->pio_mode = mode;  in ide_set_pio_mode()
150 		drive->pio_mode = mode;  in ide_set_pio_mode()
152 		return ide_config_drive_speed(drive, mode);  in ide_set_pio_mode()
156 int ide_set_dma_mode(ide_drive_t *drive, const u8 mode)  in ide_set_dma_mode()  argument
168 		if (ide_config_drive_speed(drive, mode))  in ide_set_dma_mode()
170 		drive->dma_mode = mode;  in ide_set_dma_mode()
174 		drive->dma_mode = mode;  in ide_set_dma_mode()
176 		return ide_config_drive_speed(drive, mode);  in ide_set_dma_mode()
200 	 * - report device max PIO mode  in ide_set_pio()
201 	 * - check req_pio != 255 against device max PIO mode  in ide_set_pio()
212  *	ide_rate_filter		-	filter transfer mode
225 	u8 mode = ide_find_dma_mode(drive, speed);  in ide_rate_filter()  local
227 	if (mode == 0) {  in ide_rate_filter()
229 			mode = fls(hwif->pio_mask) - 1 + XFER_PIO_0;  in ide_rate_filter()
231 			mode = XFER_PIO_4;  in ide_rate_filter()
234 /*	printk("%s: mode 0x%02x, speed 0x%02x\n", __func__, mode, speed); */  in ide_rate_filter()
236 	return min(speed, mode);  in ide_rate_filter()