1 // SPDX-License-Identifier: GPL-2.0-only
3  * pata_triflex.c 	- Compaq PATA for new ATA layer
15  * Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
36  *	triflex_prereset		-	probe begin
46 		{ 0x80, 1, 0x01, 0x01 },  in triflex_prereset()
47 		{ 0x80, 1, 0x02, 0x02 }  in triflex_prereset()
50 	struct ata_port *ap = link->ap;  in triflex_prereset()
51 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in triflex_prereset()
53 	if (!pci_test_config_bits(pdev, &triflex_enable_bits[ap->port_no]))  in triflex_prereset()
54 		return -ENOENT;  in triflex_prereset()
62  *	triflex_load_timing		-	timing configuration
75 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in triflex_load_timing()
76 	u32 timing = 0;  in triflex_load_timing()  local
78 	int channel_offset = ap->port_no ? 0x74: 0x70;  in triflex_load_timing()
79 	unsigned int is_slave	= (adev->devno != 0);  in triflex_load_timing()
88 			timing = 0x0103;break;  in triflex_load_timing()
90 			timing = 0x0203;break;  in triflex_load_timing()
92 			timing = 0x0808;break;  in triflex_load_timing()
96 			timing = 0x0F0F;break;  in triflex_load_timing()
98 			timing = 0x0202;break;  in triflex_load_timing()
100 			timing = 0x0204;break;  in triflex_load_timing()
102 			timing = 0x0404;break;  in triflex_load_timing()
104 			timing = 0x0508;break;  in triflex_load_timing()
106 			timing = 0x0808;break;  in triflex_load_timing()
110 	triflex_timing &= ~ (0xFFFF << (16 * is_slave));  in triflex_load_timing()
111 	triflex_timing |= (timing << (16 * is_slave));  in triflex_load_timing()
118  *	triflex_set_piomode	-	set initial PIO mode data
122  *	Use the timing loader to set up the PIO mode. We have to do this
128 	triflex_load_timing(ap, adev, adev->pio_mode);  in triflex_set_piomode()
132  *	triflex_bmdma_start	-	DMA start callback
135  *	Usually drivers set the DMA timing at the point the set_dmamode call
139  *	the PIO timing when the DMA is finished.
144 	triflex_load_timing(qc->ap, qc->dev, qc->dev->dma_mode);  in triflex_bmdma_start()
149  *	triflex_bmdma_stop	-	DMA stop callback
160 	triflex_load_timing(qc->ap, qc->dev, qc->dev->pio_mode);  in triflex_bmdma_stop()
186 	ata_print_version_once(&dev->dev, DRV_VERSION);  in triflex_init_one()
188 	return ata_pci_bmdma_init_one(dev, ppi, &triflex_sht, NULL, 0);  in triflex_init_one()
210 	return 0;  in triflex_ata_pci_device_suspend()
229 MODULE_DESCRIPTION("low-level driver for Compaq Triflex");