1 // SPDX-License-Identifier: GPL-2.0-only
6  * Includes portions of the SL2312/SL3516/Gemini PATA driver
25  * struct ftide010 - state container for the Faraday FTIDE010
32  * @sg: Gemini SATA bridge pointer, if running on the Gemini
33  * @master_to_sata0: Gemini SATA bridge: the ATA master is connected
35  * @slave_to_sata0: Gemini SATA bridge: the ATA slave is connected
37  * @master_to_sata1: Gemini SATA bridge: the ATA master is connected
39  * @slave_to_sata1: Gemini SATA bridge: the ATA slave is connected
49 	/* Gemini-specific properties */
143 	struct ftide010 *ftide = ap->host->private_data;  in ftide010_set_dmamode()
144 	u8 speed = adev->dma_mode;  in ftide010_set_dmamode()
145 	u8 devno = adev->devno & 1;  in ftide010_set_dmamode()
161 	clkreg = readb(ftide->base + FTIDE010_CLK_MOD);  in ftide010_set_dmamode()
167 		dev_dbg(ftide->dev, "set UDMA mode %02x, index %d\n",  in ftide010_set_dmamode()
184 		dev_dbg(ftide->dev, "UDMA write clkreg = %02x, timreg = %02x\n",  in ftide010_set_dmamode()
187 		writeb(clkreg, ftide->base + FTIDE010_CLK_MOD);  in ftide010_set_dmamode()
188 		writeb(timreg, ftide->base + FTIDE010_UDMA_TIMING0 + devno);  in ftide010_set_dmamode()
191 		dev_dbg(ftide->dev, "set MWDMA mode %02x, index %d\n",  in ftide010_set_dmamode()
202 		dev_dbg(ftide->dev,  in ftide010_set_dmamode()
206 		writeb(clkreg, ftide->base + FTIDE010_CLK_MOD);  in ftide010_set_dmamode()
207 		writeb(timreg, ftide->base + FTIDE010_MWDMA_TIMING);  in ftide010_set_dmamode()
211 	 * Store the current device (master or slave) in ap->private_data  in ftide010_set_dmamode()
215 	ap->private_data = adev;  in ftide010_set_dmamode()
222 	struct ftide010 *ftide = ap->host->private_data;  in ftide010_set_piomode()
223 	u8 pio = adev->pio_mode - XFER_PIO_0;  in ftide010_set_piomode()
225 	dev_dbg(ftide->dev, "set PIO mode %02x, index %d\n",  in ftide010_set_piomode()
226 		adev->pio_mode, pio);  in ftide010_set_piomode()
228 	       ftide->base + FTIDE010_PIO_TIMING);  in ftide010_set_piomode()
239 	struct ata_port *ap = qc->ap;  in ftide010_qc_issue()
240 	struct ata_device *adev = qc->dev;  in ftide010_qc_issue()
243 	 * If the device changed, i.e. slave->master, master->slave,  in ftide010_qc_issue()
247 	if (adev != ap->private_data && ata_dma_enabled(adev))  in ftide010_qc_issue()
272 	struct ftide010 *ftide = ap->host->private_data;  in pata_ftide010_gemini_port_start()
273 	struct device *dev = ftide->dev;  in pata_ftide010_gemini_port_start()
274 	struct sata_gemini *sg = ftide->sg;  in pata_ftide010_gemini_port_start()
282 	if (ftide->master_to_sata0) {  in pata_ftide010_gemini_port_start()
288 	if (ftide->master_to_sata1) {  in pata_ftide010_gemini_port_start()
294 	/* Avoid double-starting */  in pata_ftide010_gemini_port_start()
295 	if (ftide->slave_to_sata0 && !ftide->master_to_sata0) {  in pata_ftide010_gemini_port_start()
301 	/* Avoid double-starting */  in pata_ftide010_gemini_port_start()
302 	if (ftide->slave_to_sata1 && !ftide->master_to_sata1) {  in pata_ftide010_gemini_port_start()
310 	return (bridges > 0) ? 0 : -EINVAL; // -ENODEV;  in pata_ftide010_gemini_port_start()
315 	struct ftide010 *ftide = ap->host->private_data;  in pata_ftide010_gemini_port_stop()
316 	struct device *dev = ftide->dev;  in pata_ftide010_gemini_port_stop()
317 	struct sata_gemini *sg = ftide->sg;  in pata_ftide010_gemini_port_stop()
319 	if (ftide->master_to_sata0) {  in pata_ftide010_gemini_port_stop()
323 	if (ftide->master_to_sata1) {  in pata_ftide010_gemini_port_stop()
327 	/* Avoid double-stopping */  in pata_ftide010_gemini_port_stop()
328 	if (ftide->slave_to_sata0 && !ftide->master_to_sata0) {  in pata_ftide010_gemini_port_stop()
332 	/* Avoid double-stopping */  in pata_ftide010_gemini_port_stop()
333 	if (ftide->slave_to_sata1 && !ftide->master_to_sata1) {  in pata_ftide010_gemini_port_stop()
341 	struct ftide010 *ftide = ap->host->private_data;  in pata_ftide010_gemini_cable_detect()
347 	return ftide->master_cbl;  in pata_ftide010_gemini_cable_detect()
354 	struct device *dev = ftide->dev;  in pata_ftide010_gemini_init()
362 	ftide->sg = sg;  in pata_ftide010_gemini_init()
374 	/* Flag port as SATA-capable */  in pata_ftide010_gemini_init()
376 		pi->flags |= ATA_FLAG_SATA;  in pata_ftide010_gemini_init()
380 		pi->mwdma_mask = 0;  in pata_ftide010_gemini_init()
381 		pi->udma_mask = 0;  in pata_ftide010_gemini_init()
385 	 * We assume that a simple 40-wire cable is used in the PATA mode.  in pata_ftide010_gemini_init()
386 	 * if you're adding a system using the PATA interface, make sure  in pata_ftide010_gemini_init()
394 			ftide->master_cbl = ATA_CBL_SATA;  in pata_ftide010_gemini_init()
395 			ftide->slave_cbl = ATA_CBL_PATA40;  in pata_ftide010_gemini_init()
396 			ftide->master_to_sata0 = true;  in pata_ftide010_gemini_init()
399 			ftide->master_cbl = ATA_CBL_SATA;  in pata_ftide010_gemini_init()
400 			ftide->slave_cbl = ATA_CBL_NONE;  in pata_ftide010_gemini_init()
401 			ftide->master_to_sata0 = true;  in pata_ftide010_gemini_init()
404 			ftide->master_cbl = ATA_CBL_PATA40;  in pata_ftide010_gemini_init()
405 			ftide->slave_cbl = ATA_CBL_PATA40;  in pata_ftide010_gemini_init()
408 			ftide->master_cbl = ATA_CBL_SATA;  in pata_ftide010_gemini_init()
409 			ftide->slave_cbl = ATA_CBL_SATA;  in pata_ftide010_gemini_init()
410 			ftide->master_to_sata0 = true;  in pata_ftide010_gemini_init()
411 			ftide->slave_to_sata1 = true;  in pata_ftide010_gemini_init()
417 			ftide->master_cbl = ATA_CBL_SATA;  in pata_ftide010_gemini_init()
418 			ftide->slave_cbl = ATA_CBL_NONE;  in pata_ftide010_gemini_init()
419 			ftide->master_to_sata1 = true;  in pata_ftide010_gemini_init()
422 			ftide->master_cbl = ATA_CBL_SATA;  in pata_ftide010_gemini_init()
423 			ftide->slave_cbl = ATA_CBL_PATA40;  in pata_ftide010_gemini_init()
424 			ftide->master_to_sata1 = true;  in pata_ftide010_gemini_init()
427 			ftide->master_cbl = ATA_CBL_SATA;  in pata_ftide010_gemini_init()
428 			ftide->slave_cbl = ATA_CBL_SATA;  in pata_ftide010_gemini_init()
429 			ftide->slave_to_sata0 = true;  in pata_ftide010_gemini_init()
430 			ftide->master_to_sata1 = true;  in pata_ftide010_gemini_init()
433 			ftide->master_cbl = ATA_CBL_PATA40;  in pata_ftide010_gemini_init()
434 			ftide->slave_cbl = ATA_CBL_PATA40;  in pata_ftide010_gemini_init()
438 	dev_info(dev, "set up Gemini PATA%d\n", is_ata1);  in pata_ftide010_gemini_init()
447 	return -ENOTSUPP;  in pata_ftide010_gemini_init()
454 	struct device *dev = &pdev->dev;  in pata_ftide010_probe()
455 	struct device_node *np = dev->of_node;  in pata_ftide010_probe()
466 		return -ENOMEM;  in pata_ftide010_probe()
467 	ftide->dev = dev;  in pata_ftide010_probe()
475 		return -ENODEV;  in pata_ftide010_probe()
477 	ftide->base = devm_ioremap_resource(dev, res);  in pata_ftide010_probe()
478 	if (IS_ERR(ftide->base))  in pata_ftide010_probe()
479 		return PTR_ERR(ftide->base);  in pata_ftide010_probe()
481 	ftide->pclk = devm_clk_get(dev, "PCLK");  in pata_ftide010_probe()
482 	if (!IS_ERR(ftide->pclk)) {  in pata_ftide010_probe()
483 		ret = clk_prepare_enable(ftide->pclk);  in pata_ftide010_probe()
490 	/* Some special Cortina Gemini init, if needed */  in pata_ftide010_probe()
491 	if (of_device_is_compatible(np, "cortina,gemini-pata")) {  in pata_ftide010_probe()
494 		 * Gemini has two instances of FTIDE010) and we do  in pata_ftide010_probe()
501 				(res->start == 0x63400000));  in pata_ftide010_probe()
506 		ftide->master_cbl = ATA_CBL_PATA40;  in pata_ftide010_probe()
507 		ftide->slave_cbl = ATA_CBL_PATA40;  in pata_ftide010_probe()
510 	ftide->host = ata_host_alloc_pinfo(dev, ppi, 1);  in pata_ftide010_probe()
511 	if (!ftide->host) {  in pata_ftide010_probe()
512 		ret = -ENOMEM;  in pata_ftide010_probe()
515 	ftide->host->private_data = ftide;  in pata_ftide010_probe()
517 	for (i = 0; i < ftide->host->n_ports; i++) {  in pata_ftide010_probe()
518 		struct ata_port *ap = ftide->host->ports[i];  in pata_ftide010_probe()
519 		struct ata_ioports *ioaddr = &ap->ioaddr;  in pata_ftide010_probe()
521 		ioaddr->bmdma_addr = ftide->base + FTIDE010_DMA_REG;  in pata_ftide010_probe()
522 		ioaddr->cmd_addr = ftide->base + FTIDE010_CMD_DATA;  in pata_ftide010_probe()
523 		ioaddr->ctl_addr = ftide->base + FTIDE010_ALTSTAT_CTRL;  in pata_ftide010_probe()
524 		ioaddr->altstatus_addr = ftide->base + FTIDE010_ALTSTAT_CTRL;  in pata_ftide010_probe()
529 		 readl(ftide->base + FTIDE010_IDE_DEVICE_ID), irq, res);  in pata_ftide010_probe()
531 	ret = ata_host_activate(ftide->host, irq, ata_bmdma_interrupt,  in pata_ftide010_probe()
539 	if (!IS_ERR(ftide->pclk))  in pata_ftide010_probe()
540 		clk_disable_unprepare(ftide->pclk);  in pata_ftide010_probe()
547 	struct ftide010 *ftide = host->private_data;  in pata_ftide010_remove()
549 	ata_host_detach(ftide->host);  in pata_ftide010_remove()
550 	if (!IS_ERR(ftide->pclk))  in pata_ftide010_remove()
551 		clk_disable_unprepare(ftide->pclk);  in pata_ftide010_remove()