1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  sata_sis.c - Silicon Integrated Systems SATA
6  *  		    Please ALWAYS copy linux-ide@vger.kernel.org
12  *  as Documentation/driver-api/libata.rst
38 	SIS180_SATA1_OFS	= 0x10, /* offset from sata0->sata1 phy regs */
39 	SIS182_SATA1_OFS	= 0x20, /* offset from sata0->sata1 phy regs */
44 	SIS_FLAG_CFGSCR		= (1 << 30), /* host flag: SCRs via PCI cfg */
46 	GENCTL_IOMAPPED_SCR	= (1 << 26), /* if set, SCRs are in IO space */
94 MODULE_DESCRIPTION("low-level driver for Silicon Integrated Systems SATA controller");
101 	struct ata_port *ap = link->ap;  in get_scr_cfg_addr()
102 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in get_scr_cfg_addr()
106 	if (ap->port_no)  {  in get_scr_cfg_addr()
107 		switch (pdev->device) {  in get_scr_cfg_addr()
122 	if (link->pmp)  in get_scr_cfg_addr()
131 	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);  in sis_scr_cfg_read()
134 	if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */  in sis_scr_cfg_read()
135 		return -EINVAL;  in sis_scr_cfg_read()
144 	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);  in sis_scr_cfg_write()
153 	struct ata_port *ap = link->ap;  in sis_scr_read()
154 	void __iomem *base = ap->ioaddr.scr_addr + link->pmp * 0x10;  in sis_scr_read()
157 		return -EINVAL;  in sis_scr_read()
159 	if (ap->flags & SIS_FLAG_CFGSCR)  in sis_scr_read()
168 	struct ata_port *ap = link->ap;  in sis_scr_write()
169 	void __iomem *base = ap->ioaddr.scr_addr + link->pmp * 0x10;  in sis_scr_write()
172 		return -EINVAL;  in sis_scr_write()
174 	if (ap->flags & SIS_FLAG_CFGSCR)  in sis_scr_write()
191 	ata_print_version_once(&pdev->dev, DRV_VERSION);  in sis_init_one()
197 	/* check and see if the SCRs are in IO space or PCI cfg space */  in sis_init_one()
202 	/* if hardware thinks SCRs are in IO space, but there are  in sis_init_one()
203 	 * no IO resources assigned, change to PCI cfg space.  in sis_init_one()
214 	switch (ent->device) {  in sis_init_one()
218 		/* The PATA-handling is provided by pata_sis */  in sis_init_one()
229 			dev_info(&pdev->dev,  in sis_init_one()
233 			dev_info(&pdev->dev,  in sis_init_one()
244 			dev_info(&pdev->dev, "Detected SiS 182/965 chipset\n");  in sis_init_one()
247 			dev_info(&pdev->dev, "Detected SiS 182/965L chipset\n");  in sis_init_one()
252 		dev_info(&pdev->dev,  in sis_init_one()
258 		dev_info(&pdev->dev,  in sis_init_one()
270 		struct ata_port *ap = host->ports[i];  in sis_init_one()
272 		if (ap->flags & ATA_FLAG_SATA &&  in sis_init_one()
273 		    ap->flags & ATA_FLAG_SLAVE_POSS) {  in sis_init_one()
286 		mmio = host->iomap[SIS_SCR_PCI_BAR];  in sis_init_one()
288 		host->ports[0]->ioaddr.scr_addr = mmio;  in sis_init_one()
289 		host->ports[1]->ioaddr.scr_addr = mmio + port2_start;  in sis_init_one()
294 	return ata_host_activate(host, pdev->irq, ata_bmdma_interrupt,  in sis_init_one()