1 // SPDX-License-Identifier: GPL-2.0
53 	unsigned int rptime;	/* tRP -- Ready to pause time (nsec) */
54 	unsigned int cycletime;	/* tCYCTYP2/2 -- avg Cycle Time (nsec) */
76 			  ideclk_period) - 1;  in pata_bk3710_setudmamode()
77 	tenv = DIV_ROUND_UP(20, ideclk_period) - 1;  in pata_bk3710_setudmamode()
79 			   ideclk_period) - 1;  in pata_bk3710_setudmamode()
112 	cycletime = max_t(int, t->cycle, min_cycle);  in pata_bk3710_setmwdmamode()
116 	td = DIV_ROUND_UP(t->active, ideclk_period);  in pata_bk3710_setmwdmamode()
117 	tkw = t0 - td - 1;  in pata_bk3710_setmwdmamode()
118 	td--;  in pata_bk3710_setmwdmamode()
136 	void __iomem *base = (void __iomem *)ap->ioaddr.bmdma_addr;  in pata_bk3710_set_dmamode()
137 	int is_slave = adev->devno;  in pata_bk3710_set_dmamode()
138 	const u8 xferspeed = adev->dma_mode;  in pata_bk3710_set_dmamode()
142 					xferspeed - XFER_UDMA_0);  in pata_bk3710_set_dmamode()
145 					 adev->id[ATA_ID_EIDE_DMA_MIN],  in pata_bk3710_set_dmamode()
161 	t2 = DIV_ROUND_UP(t->active, ideclk_period);  in pata_bk3710_setpiomode()
163 	t2i = t0 - t2 - 1;  in pata_bk3710_setpiomode()
164 	t2--;  in pata_bk3710_setpiomode()
174 	/* FIXME: this is broken also in the old driver */  in pata_bk3710_setpiomode()
176 		u8 mode2 = pair->pio_mode - XFER_PIO_0;  in pata_bk3710_setpiomode()
183 	t0 = DIV_ROUND_UP(t->cyc8b, ideclk_period);  in pata_bk3710_setpiomode()
184 	t2 = DIV_ROUND_UP(t->act8b, ideclk_period);  in pata_bk3710_setpiomode()
186 	t2i = t0 - t2 - 1;  in pata_bk3710_setpiomode()
187 	t2--;  in pata_bk3710_setpiomode()
201 	void __iomem *base = (void __iomem *)ap->ioaddr.bmdma_addr;  in pata_bk3710_set_piomode()
203 	const struct ata_timing *t = ata_timing_find_mode(adev->pio_mode);  in pata_bk3710_set_piomode()
204 	const u16 *id = adev->id;  in pata_bk3710_set_piomode()
206 	int is_slave = adev->devno;  in pata_bk3710_set_piomode()
207 	const u8 pio = adev->pio_mode - XFER_PIO_0;  in pata_bk3710_set_piomode()
215 		/* conservative "downgrade" for all pre-ATA2 drives */  in pata_bk3710_set_piomode()
216 		if (pio < 3 && cycle_time < t->cycle)  in pata_bk3710_set_piomode()
221 		cycle_time = t->cycle;  in pata_bk3710_set_piomode()
243 	 * from enabling prefetch/postwrite.  in pata_bk3710_chipinit()
248 	 * UDMACTL Ultra-ATA DMA Control  in pata_bk3710_chipinit()
301 	clk = devm_clk_get(&pdev->dev, NULL);  in pata_bk3710_probe()
303 		return -ENODEV;  in pata_bk3710_probe()
308 		return -EINVAL;  in pata_bk3710_probe()
321 	base = devm_ioremap_resource(&pdev->dev, mem);  in pata_bk3710_probe()
329 	host = ata_host_alloc(&pdev->dev, 1);  in pata_bk3710_probe()
331 		return -ENOMEM;  in pata_bk3710_probe()
332 	ap = host->ports[0];  in pata_bk3710_probe()
334 	ap->ops = &pata_bk3710_ports_ops;  in pata_bk3710_probe()
335 	ap->pio_mask = ATA_PIO4;  in pata_bk3710_probe()
336 	ap->mwdma_mask = ATA_MWDMA2;  in pata_bk3710_probe()
337 	ap->udma_mask = rate < 100000000 ? ATA_UDMA4 : ATA_UDMA5;  in pata_bk3710_probe()
338 	ap->flags |= ATA_FLAG_SLAVE_POSS;  in pata_bk3710_probe()
340 	ap->ioaddr.data_addr		= base + BK3710_TF_OFFSET;  in pata_bk3710_probe()
341 	ap->ioaddr.error_addr		= base + BK3710_TF_OFFSET + 1;  in pata_bk3710_probe()
342 	ap->ioaddr.feature_addr		= base + BK3710_TF_OFFSET + 1;  in pata_bk3710_probe()
343 	ap->ioaddr.nsect_addr		= base + BK3710_TF_OFFSET + 2;  in pata_bk3710_probe()
344 	ap->ioaddr.lbal_addr		= base + BK3710_TF_OFFSET + 3;  in pata_bk3710_probe()
345 	ap->ioaddr.lbam_addr		= base + BK3710_TF_OFFSET + 4;  in pata_bk3710_probe()
346 	ap->ioaddr.lbah_addr		= base + BK3710_TF_OFFSET + 5;  in pata_bk3710_probe()
347 	ap->ioaddr.device_addr		= base + BK3710_TF_OFFSET + 6;  in pata_bk3710_probe()
348 	ap->ioaddr.status_addr		= base + BK3710_TF_OFFSET + 7;  in pata_bk3710_probe()
349 	ap->ioaddr.command_addr		= base + BK3710_TF_OFFSET + 7;  in pata_bk3710_probe()
351 	ap->ioaddr.altstatus_addr	= base + BK3710_CTL_OFFSET;  in pata_bk3710_probe()
352 	ap->ioaddr.ctl_addr		= base + BK3710_CTL_OFFSET;  in pata_bk3710_probe()
354 	ap->ioaddr.bmdma_addr		= base;  in pata_bk3710_probe()
356 	ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx",  in pata_bk3710_probe()