1 // SPDX-License-Identifier: GPL-2.0-only
3  * pata-cs5535.c 	- CS5535 PATA for new ATA layer
4  *			  (C) 2005-2006 Red Hat Inc
7  * based upon cs5535.c from AMD <[email protected]> as cleaned up and
9  * and Alexander Kiausch <alex.kiausch@t-online.de>
11  * Loosely based on the piix & svwks drivers.
32  *	The Geode (Aka Athlon GX now) uses an internal MSR based
58  *	cs5535_cable_detect	-	detect cable type
68 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in cs5535_cable_detect()
78  *	cs5535_set_piomode		-	PIO setup
96 	int mode = adev->pio_mode - XFER_PIO_0;  in cs5535_set_piomode()  local
97 	int cmdmode = mode;  in cs5535_set_piomode()
101 		int pairmode = pair->pio_mode - XFER_PIO_0;  in cs5535_set_piomode()
102 		cmdmode = min(mode, pairmode);  in cs5535_set_piomode()
105 			wrmsr(ATAC_CH0D0_PIO + 2 * pair->devno,  in cs5535_set_piomode()
109 	wrmsr(ATAC_CH0D0_PIO + 2 * adev->devno,  in cs5535_set_piomode()
110 		pio_cmd_timings[cmdmode] << 16 | pio_timings[mode], 0);  in cs5535_set_piomode()
113 	rdmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg, dummy);  in cs5535_set_piomode()
114 	wrmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg | 0x80000000UL, 0);  in cs5535_set_piomode()
118  *	cs5535_set_dmamode		-	DMA timing setup
133 	int mode = adev->dma_mode;  in cs5535_set_dmamode()  local
135 	rdmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg, dummy);  in cs5535_set_dmamode()
137 	if (mode >= XFER_UDMA_0)  in cs5535_set_dmamode()
138 		reg |= udma_timings[mode - XFER_UDMA_0];  in cs5535_set_dmamode()
140 		reg |= mwdma_timings[mode - XFER_MW_DMA_0];  in cs5535_set_dmamode()
141 	wrmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg, 0);  in cs5535_set_dmamode()
156  *	cs5535_init_one		-	Initialise a CS5530
200 MODULE_DESCRIPTION("low-level driver for the NS/AMD 5535");