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 	DPRINTK("ata%u: cmd 0x%X\n", ap->print_id, tf->command);  in pdc202xx_exec_command()
43 	iowrite8(tf->command, ap->ioaddr.command_addr);  in pdc202xx_exec_command()
49 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);  in pdc202xx_irq_check()
53 	if (ap->port_no) {  in pdc202xx_irq_check()
69  *	pdc202xx_configure_piomode	-	set chip PIO timing
81 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in pdc202xx_configure_piomode()
82 	int port = 0x60 + 8 * ap->port_no + 4 * adev->devno;  in pdc202xx_configure_piomode()
97 	if (adev->class == ATA_DEV_ATA)  in pdc202xx_configure_piomode()
104  *	pdc202xx_set_piomode	-	set initial PIO mode data
114 	pdc202xx_configure_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);  in pdc202xx_set_piomode()
118  *	pdc202xx_set_dmamode	-	set DMA mode in chip
122  *	Load DMA cycle times into the chip ready for a DMA transfer
128 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in pdc202xx_set_dmamode()
129 	int port = 0x60 + 8 * ap->port_no + 4 * adev->devno;  in pdc202xx_set_dmamode()
151 	if (adev->dma_mode >= XFER_UDMA_0) {  in pdc202xx_set_dmamode()
152 		int speed = adev->dma_mode - XFER_UDMA_0;  in pdc202xx_set_dmamode()
157 		int speed = adev->dma_mode - XFER_MW_DMA_0;  in pdc202xx_set_dmamode()
167  *	pdc2026x_bmdma_start		-	DMA engine begin
179 	struct ata_port *ap = qc->ap;  in pdc2026x_bmdma_start()
180 	struct ata_device *adev = qc->dev;  in pdc2026x_bmdma_start()
181 	struct ata_taskfile *tf = &qc->tf;  in pdc2026x_bmdma_start()
182 	int sel66 = ap->port_no ? 0x08: 0x02;  in pdc2026x_bmdma_start()
184 	void __iomem *master = ap->host->ports[0]->ioaddr.bmdma_addr;  in pdc2026x_bmdma_start()
186 	void __iomem *atapi_reg = master + 0x20 + (4 * ap->port_no);  in pdc2026x_bmdma_start()
191 	if (adev->dma_mode > XFER_UDMA_2)  in pdc2026x_bmdma_start()
198 	pdc202xx_set_dmamode(ap, qc->dev);  in pdc2026x_bmdma_start()
201 	if ((tf->flags & ATA_TFLAG_LBA48) ||  tf->protocol == ATAPI_PROT_DMA) {  in pdc2026x_bmdma_start()
202 		len = qc->nbytes / 2;  in pdc2026x_bmdma_start()
204 		if (tf->flags & ATA_TFLAG_WRITE)  in pdc2026x_bmdma_start()
217  *	pdc2026x_bmdma_stop		-	DMA engine stop
229 	struct ata_port *ap = qc->ap;  in pdc2026x_bmdma_stop()
230 	struct ata_device *adev = qc->dev;  in pdc2026x_bmdma_stop()
231 	struct ata_taskfile *tf = &qc->tf;  in pdc2026x_bmdma_stop()
233 	int sel66 = ap->port_no ? 0x08: 0x02;  in pdc2026x_bmdma_stop()
235 	void __iomem *master = ap->host->ports[0]->ioaddr.bmdma_addr;  in pdc2026x_bmdma_stop()
237 	void __iomem *atapi_reg = master + 0x20 + (4 * ap->port_no);  in pdc2026x_bmdma_stop()
240 	if (tf->protocol == ATAPI_PROT_DMA || (tf->flags & ATA_TFLAG_LBA48)) {  in pdc2026x_bmdma_stop()
244 	/* Flip back to 33Mhz for PIO */  in pdc2026x_bmdma_stop()
245 	if (adev->dma_mode > XFER_UDMA_2)  in pdc2026x_bmdma_stop()
252  *	pdc2026x_dev_config	-	device setup hook
255  *	Perform chip specific early setup. We need to lock the transfer
262 	adev->max_sectors = 256;  in pdc2026x_dev_config()
267 	void __iomem *bmdma = ap->ioaddr.bmdma_addr;  in pdc2026x_port_start()
277  *	pdc2026x_check_atapi_dma - Check whether ATAPI DMA can be supported for this command
280  *	Just say no - not supported on older Promise.
351 	const struct ata_port_info *ppi[] = { &info[id->driver_data], NULL };  in pdc202xx_init_one()
353 	if (dev->device == PCI_DEVICE_ID_PROMISE_20265) {  in pdc202xx_init_one()
354 		struct pci_dev *bridge = dev->bus->self;  in pdc202xx_init_one()
356 		if (bridge && bridge->vendor == PCI_VENDOR_ID_INTEL) {  in pdc202xx_init_one()
357 			if (bridge->device == PCI_DEVICE_ID_INTEL_I960)  in pdc202xx_init_one()
358 				return -ENODEV;  in pdc202xx_init_one()
359 			if (bridge->device == PCI_DEVICE_ID_INTEL_I960RM)  in pdc202xx_init_one()
360 				return -ENODEV;  in pdc202xx_init_one()
390 MODULE_DESCRIPTION("low-level driver for Promise 2024x and 20262-20267");