1 // SPDX-License-Identifier: GPL-2.0-only
3  * pata-cs5530.c 	- CS5530 PATA for new ATA layer
28 	unsigned long bmdma = (unsigned long)ap->ioaddr.bmdma_addr;  in cs5530_port_base()
30 	return (void __iomem *)((bmdma & ~0x0F) + 0x20 + 0x10 * ap->port_no);  in cs5530_port_base()
34  *	cs5530_set_piomode		-	PIO setup
57 	if (adev->devno)  in cs5530_set_piomode()
60 	iowrite32(cs5530_pio_timings[format][adev->pio_mode - XFER_PIO_0], base);  in cs5530_set_piomode()
64  *	cs5530_set_dmamode		-	DMA timing setup
82 	switch(adev->dma_mode) {  in cs5530_set_dmamode()
100 	if (adev->devno == 0) /* Master */  in cs5530_set_dmamode()
112 	reg = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);  in cs5530_set_dmamode()
113 	reg |= (1 << (5 + adev->devno));  in cs5530_set_dmamode()
114 	iowrite8(reg, ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);  in cs5530_set_dmamode()
118 	ap->private_data = adev;  in cs5530_set_dmamode()
122  *	cs5530_qc_issue		-	command issue
125  *	Called when the libata layer is about to issue a command. We wrap
133 	struct ata_port *ap = qc->ap;  in cs5530_qc_issue()
134 	struct ata_device *adev = qc->dev;  in cs5530_qc_issue()
135 	struct ata_device *prev = ap->private_data;  in cs5530_qc_issue()
188  *	cs5530_init_chip	-	Chipset init
199 		switch (dev->device) {  in cs5530_init_chip()
221 	 * Set PCI CacheLineSize to 16-bytes:  in cs5530_init_chip()
222 	 * --> Write 0x04 into 8-bit PCI CACHELINESIZE reg of function 0 of the cs5530  in cs5530_init_chip()
231 	 * --> Write 0x5006 into 16-bit reg at offset 0xd0 of function 0 of the cs5530  in cs5530_init_chip()
237 	 * Bit-1 at 0x40 enables MemoryWriteAndInvalidate on internal X-bus:  in cs5530_init_chip()
245 	 * Set max PCI burst size (16-bytes seems to work best):  in cs5530_init_chip()
246 	 *	   16bytes: set bit-1 at 0x41 (reg value of 0x16)  in cs5530_init_chip()
247 	 *	all others: clear bit-1 at 0x41, and do:  in cs5530_init_chip()
270 	return -ENODEV;  in cs5530_init_chip()
274  *	cs5530_init_one		-	Initialise a CS5530
307 		return -ENODEV;  in cs5530_init_one()
328 		return -EIO;  in cs5530_reinit_one()
355 MODULE_DESCRIPTION("low-level driver for the Cyrix/NS/AMD 5530");