2  * Copyright (C) 2000-2002		Mark Lord <mlord@pobox.com>
66  * Here are the standard PIO mode 0-4 timings for each "format".
67  * Format-0 uses fast data reg timings, with slower command reg timings.
68  * Format-1 uses fast timings for all registers, but won't work with all drives.
81 static void sc1200_tunepio(ide_drive_t *drive, u8 pio)  in sc1200_tunepio()  argument
83 	ide_hwif_t *hwif = drive->hwif;  in sc1200_tunepio()
84 	struct pci_dev *pdev = to_pci_dev(hwif->dev);  in sc1200_tunepio()
85 	unsigned int basereg = hwif->channel ? 0x50 : 0x40, format = 0;  in sc1200_tunepio()
91 	pci_write_config_dword(pdev, basereg + ((drive->dn & 1) << 3),  in sc1200_tunepio()
98  *	different timings can still be chosen for each drive.  We could
101  *	by looking at our mate drive to see what it is capable of, before
102  *	choosing a mode for our own drive.
104 static u8 sc1200_udma_filter(ide_drive_t *drive)  in sc1200_udma_filter()  argument
106 	ide_hwif_t *hwif = drive->hwif;  in sc1200_udma_filter()
107 	ide_drive_t *mate = ide_get_pair_dev(drive);  in sc1200_udma_filter()
109 	u8 mask = hwif->ultra_mask;  in sc1200_udma_filter()
113 	mateid = mate->id;  in sc1200_udma_filter()
126 static void sc1200_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)  in sc1200_set_dma_mode()  argument
128 	struct pci_dev		*dev = to_pci_dev(hwif->dev);  in sc1200_set_dma_mode()
131 	unsigned int		basereg = hwif->channel ? 0x50 : 0x40;  in sc1200_set_dma_mode()
132 	const u8		mode = drive->dma_mode;  in sc1200_set_dma_mode()  local
149 	 * Note that each DMA mode has several timings associated with it.  in sc1200_set_dma_mode()
153 	if (mode >= XFER_UDMA_0)  in sc1200_set_dma_mode()
154 		timings =  udma_timing[pci_clock][mode - XFER_UDMA_0];  in sc1200_set_dma_mode()
156 		timings = mwdma_timing[pci_clock][mode - XFER_MW_DMA_0];  in sc1200_set_dma_mode()
158 	if ((drive->dn & 1) == 0) {  in sc1200_set_dma_mode()
171 static int sc1200_dma_end(ide_drive_t *drive)  in sc1200_dma_end()  argument
173 	ide_hwif_t *hwif = drive->hwif;  in sc1200_dma_end()
174 	unsigned long dma_base = hwif->dma_base;  in sc1200_dma_end()
191  * for both the chipset and drive.
197 static void sc1200_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)  in sc1200_set_pio_mode()  argument
199 	int		mode = -1;  in sc1200_set_pio_mode()  local
200 	const u8	pio = drive->pio_mode - XFER_PIO_0;  in sc1200_set_pio_mode()
203 	 * bad abuse of ->set_pio_mode interface  in sc1200_set_pio_mode()
206 		case 200: mode = XFER_UDMA_0;	break;  in sc1200_set_pio_mode()
207 		case 201: mode = XFER_UDMA_1;	break;  in sc1200_set_pio_mode()
208 		case 202: mode = XFER_UDMA_2;	break;  in sc1200_set_pio_mode()
209 		case 100: mode = XFER_MW_DMA_0;	break;  in sc1200_set_pio_mode()
210 		case 101: mode = XFER_MW_DMA_1;	break;  in sc1200_set_pio_mode()
211 		case 102: mode = XFER_MW_DMA_2;	break;  in sc1200_set_pio_mode()
213 	if (mode != -1) {  in sc1200_set_pio_mode()
214 		printk("SC1200: %s: changing (U)DMA mode\n", drive->name);  in sc1200_set_pio_mode()
215 		ide_dma_off_quietly(drive);  in sc1200_set_pio_mode()
216 		if (ide_set_dma_mode(drive, mode) == 0 &&  in sc1200_set_pio_mode()
217 		    (drive->dev_flags & IDE_DFLAG_USING_DMA))  in sc1200_set_pio_mode()
218 			hwif->dma_ops->dma_host_set(drive, 1);  in sc1200_set_pio_mode()
222 	sc1200_tunepio(drive, pio);  in sc1200_set_pio_mode()
239 		struct sc1200_saved_state *ss = host->host_priv;  in sc1200_suspend()
247 			pci_read_config_dword(dev, 0x40 + r * 4, &ss->regs[r]);  in sc1200_suspend()
258 	struct sc1200_saved_state *ss = host->host_priv;  in sc1200_resume()
271 		pci_write_config_dword(dev, 0x40 + r * 4, ss->regs[r]);  in sc1200_resume()
314 		return -ENOMEM;  in sc1200_init_one()