2  * TX4938 internal IDE driver
9  * (C) Copyright TOSHIBA CORPORATION 2005-2007
14 #include <linux/ide.h>
19 #include <asm/ide.h>
27 	u64 cr = __raw_readq(&tx4938_ebuscptr->cr[ebus_ch]);  in tx4938ide_tune_ebusc()
29 	unsigned int clock = gbus_clock / (4 - sp);  in tx4938ide_tune_ebusc()
34 	/* Minimum DIOx- active time */  in tx4938ide_tune_ebusc()
35 	wt = DIV_ROUND_UP(t->act8b, cycle) - 2;  in tx4938ide_tune_ebusc()
38 	/* actual wait-cycle is max(wt & ~1, 1) */  in tx4938ide_tune_ebusc()
42 	/* Address-valid to DIOR/DIOW setup */  in tx4938ide_tune_ebusc()
43 	shwt = DIV_ROUND_UP(t->setup, cycle);  in tx4938ide_tune_ebusc()
45 	/* -DIOx recovery time (SHWT * 4) and cycle time requirement */  in tx4938ide_tune_ebusc()
46 	while ((shwt * 4 + wt + (wt ? 2 : 3)) * cycle < t->cycle)  in tx4938ide_tune_ebusc()
56 		     &tx4938_ebuscptr->cr[ebus_ch]);  in tx4938ide_tune_ebusc()
61 	struct tx4938ide_platform_info *pdata = dev_get_platdata(hwif->dev);  in tx4938ide_set_pio_mode()
62 	u8 safe = drive->pio_mode - XFER_PIO_0;  in tx4938ide_set_pio_mode()
67 		safe = min_t(u8, safe, pair->pio_mode - XFER_PIO_0);  in tx4938ide_set_pio_mode()
68 	tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, safe);  in tx4938ide_set_pio_mode()
77 	unsigned long port = drive->hwif->io_ports.data_addr;  in tx4938ide_input_data_swap()  local
81 	while (count--)  in tx4938ide_input_data_swap()
82 		*ptr++ = cpu_to_le16(__raw_readw((void __iomem *)port));  in tx4938ide_input_data_swap()
89 	unsigned long port = drive->hwif->io_ports.data_addr;  in tx4938ide_output_data_swap()  local
93 	while (count--) {  in tx4938ide_output_data_swap()
94 		__raw_writew(le16_to_cpu(*ptr), (void __iomem *)port);  in tx4938ide_output_data_swap()
135 	struct tx4938ide_platform_info *pdata = dev_get_platdata(&pdev->dev);  in tx4938ide_probe()
142 		return -ENODEV;  in tx4938ide_probe()
145 		return -ENODEV;  in tx4938ide_probe()
147 	if (!devm_request_mem_region(&pdev->dev, res->start,  in tx4938ide_probe()
149 		return -EBUSY;  in tx4938ide_probe()
150 	mapbase = (unsigned long)devm_ioremap(&pdev->dev, res->start,  in tx4938ide_probe()
151 					      8 << pdata->ioport_shift);  in tx4938ide_probe()
152 	mapctl = (unsigned long)devm_ioremap(&pdev->dev,  in tx4938ide_probe()
153 					     res->start + 0x10000 +  in tx4938ide_probe()
154 					     (6 << pdata->ioport_shift),  in tx4938ide_probe()
155 					     1 << pdata->ioport_shift);  in tx4938ide_probe()
157 		return -EBUSY;  in tx4938ide_probe()
160 	if (pdata->ioport_shift) {  in tx4938ide_probe()
161 		unsigned long port = mapbase;  in tx4938ide_probe()  local
164 		hw.io_ports_array[0] = port;  in tx4938ide_probe()
166 		port++;  in tx4938ide_probe()
171 				port + (i << pdata->ioport_shift);  in tx4938ide_probe()
176 	hw.dev = &pdev->dev;  in tx4938ide_probe()
178 	pr_info("TX4938 IDE interface (base %#lx, ctl %#lx, irq %d)\n",  in tx4938ide_probe()
180 	if (pdata->gbus_clock)  in tx4938ide_probe()
181 		tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, 0);  in tx4938ide_probe()
207 MODULE_DESCRIPTION("TX4938 internal IDE driver");