1 // SPDX-License-Identifier: GPL-2.0-only
3  * pata_pdc202xx_old.c 	- Promise PDC202xx PATA for new ATA layer
29 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in pdc2026x_cable_detect()
33 	if (cis & (1 << (10 + ap->port_no)))  in pdc2026x_cable_detect()
41 	iowrite8(tf->command, ap->ioaddr.command_addr);  in pdc202xx_exec_command()
47 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);  in pdc202xx_irq_check()
51 	if (ap->port_no) {  in pdc202xx_irq_check()
67  *	pdc202xx_configure_piomode	-	set chip PIO timing
79 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in pdc202xx_configure_piomode()
80 	int port = 0x60 + 8 * ap->port_no + 4 * adev->devno;  in pdc202xx_configure_piomode()
95 	if (adev->class == ATA_DEV_ATA)  in pdc202xx_configure_piomode()
102  *	pdc202xx_set_piomode	-	set initial PIO mode data
112 	pdc202xx_configure_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);  in pdc202xx_set_piomode()
116  *	pdc202xx_set_dmamode	-	set DMA mode in chip
120  *	Load DMA cycle times into the chip ready for a DMA transfer
126 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in pdc202xx_set_dmamode()
127 	int port = 0x60 + 8 * ap->port_no + 4 * adev->devno;  in pdc202xx_set_dmamode()
149 	if (adev->dma_mode >= XFER_UDMA_0) {  in pdc202xx_set_dmamode()
150 		int speed = adev->dma_mode - XFER_UDMA_0;  in pdc202xx_set_dmamode()
155 		int speed = adev->dma_mode - XFER_MW_DMA_0;  in pdc202xx_set_dmamode()
165  *	pdc2026x_bmdma_start		-	DMA engine begin
177 	struct ata_port *ap = qc->ap;  in pdc2026x_bmdma_start()
178 	struct ata_device *adev = qc->dev;  in pdc2026x_bmdma_start()
179 	struct ata_taskfile *tf = &qc->tf;  in pdc2026x_bmdma_start()
180 	int sel66 = ap->port_no ? 0x08: 0x02;  in pdc2026x_bmdma_start()
182 	void __iomem *master = ap->host->ports[0]->ioaddr.bmdma_addr;  in pdc2026x_bmdma_start()
184 	void __iomem *atapi_reg = master + 0x20 + (4 * ap->port_no);  in pdc2026x_bmdma_start()
189 	if (adev->dma_mode > XFER_UDMA_2)  in pdc2026x_bmdma_start()
196 	pdc202xx_set_dmamode(ap, qc->dev);  in pdc2026x_bmdma_start()
199 	if ((tf->flags & ATA_TFLAG_LBA48) ||  tf->protocol == ATAPI_PROT_DMA) {  in pdc2026x_bmdma_start()
200 		len = qc->nbytes / 2;  in pdc2026x_bmdma_start()
202 		if (tf->flags & ATA_TFLAG_WRITE)  in pdc2026x_bmdma_start()
215  *	pdc2026x_bmdma_stop		-	DMA engine stop
227 	struct ata_port *ap = qc->ap;  in pdc2026x_bmdma_stop()
228 	struct ata_device *adev = qc->dev;  in pdc2026x_bmdma_stop()
229 	struct ata_taskfile *tf = &qc->tf;  in pdc2026x_bmdma_stop()
231 	int sel66 = ap->port_no ? 0x08: 0x02;  in pdc2026x_bmdma_stop()
233 	void __iomem *master = ap->host->ports[0]->ioaddr.bmdma_addr;  in pdc2026x_bmdma_stop()
235 	void __iomem *atapi_reg = master + 0x20 + (4 * ap->port_no);  in pdc2026x_bmdma_stop()
238 	if (tf->protocol == ATAPI_PROT_DMA || (tf->flags & ATA_TFLAG_LBA48)) {  in pdc2026x_bmdma_stop()
242 	/* Flip back to 33Mhz for PIO */  in pdc2026x_bmdma_stop()
243 	if (adev->dma_mode > XFER_UDMA_2)  in pdc2026x_bmdma_stop()
250  *	pdc2026x_dev_config	-	device setup hook
253  *	Perform chip specific early setup. We need to lock the transfer
260 	adev->max_sectors = 256;  in pdc2026x_dev_config()
265 	void __iomem *bmdma = ap->ioaddr.bmdma_addr;  in pdc2026x_port_start()
275  *	pdc2026x_check_atapi_dma - Check whether ATAPI DMA can be supported for this command
278  *	Just say no - not supported on older Promise.
349 	const struct ata_port_info *ppi[] = { &info[id->driver_data], NULL };  in pdc202xx_init_one()
351 	if (dev->device == PCI_DEVICE_ID_PROMISE_20265) {  in pdc202xx_init_one()
352 		struct pci_dev *bridge = dev->bus->self;  in pdc202xx_init_one()
354 		if (bridge && bridge->vendor == PCI_VENDOR_ID_INTEL) {  in pdc202xx_init_one()
355 			if (bridge->device == PCI_DEVICE_ID_INTEL_I960)  in pdc202xx_init_one()
356 				return -ENODEV;  in pdc202xx_init_one()
357 			if (bridge->device == PCI_DEVICE_ID_INTEL_I960RM)  in pdc202xx_init_one()
358 				return -ENODEV;  in pdc202xx_init_one()
388 MODULE_DESCRIPTION("low-level driver for Promise 2024x and 20262-20267");