77 static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
78 static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
79 static int vt8251_scr_read(struct ata_link *link, unsigned int scr, u32 *val);
80 static int vt8251_scr_write(struct ata_link *link, unsigned int scr, u32 val);
83 static int vt6420_prereset(struct ata_link *link, unsigned long deadline);
187 static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)  in svia_scr_read()  argument
191 	*val = ioread32(link->ap->ioaddr.scr_addr + (4 * sc_reg));  in svia_scr_read()
195 static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)  in svia_scr_write()  argument
199 	iowrite32(val, link->ap->ioaddr.scr_addr + (4 * sc_reg));  in svia_scr_write()
203 static int vt8251_scr_read(struct ata_link *link, unsigned int scr, u32 *val)  in vt8251_scr_read()  argument
206 	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);  in vt8251_scr_read()
207 	int slot = 2 * link->ap->port_no + link->pmp;  in vt8251_scr_read()
252 static int vt8251_scr_write(struct ata_link *link, unsigned int scr, u32 val)  in vt8251_scr_write()  argument
254 	struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);  in vt8251_scr_write()
255 	int slot = 2 * link->ap->port_no + link->pmp;  in vt8251_scr_write()
332 static int vt6420_prereset(struct ata_link *link, unsigned long deadline)  in vt6420_prereset()  argument
334 	struct ata_port *ap = link->ap;  in vt6420_prereset()
335 	struct ata_eh_context *ehc = &ap->link.eh_context;  in vt6420_prereset()
345 	svia_scr_write(link, SCR_CONTROL, 0x300);  in vt6420_prereset()
346 	svia_scr_read(link, SCR_CONTROL, &scontrol); /* flush */  in vt6420_prereset()
350 		ata_msleep(link->ap, 200);  in vt6420_prereset()
351 		svia_scr_read(link, SCR_STATUS, &sstatus);  in vt6420_prereset()
357 	svia_scr_read(link, SCR_STATUS, &sstatus);  in vt6420_prereset()
358 	svia_scr_read(link, SCR_CONTROL, &scontrol);  in vt6420_prereset()
367 	svia_scr_read(link, SCR_STATUS, &sstatus);  in vt6420_prereset()
377 	ata_sff_wait_ready(link, deadline);  in vt6420_prereset()