1 /* SPDX-License-Identifier: GPL-2.0 */
15 #include <linux/dma-mapping.h>
45 static struct sun_flpy_controller *sun_fdc = (struct sun_flpy_controller *)-1;
73 #define fd_set_dma_mode(mode)     sun_fdops.fd_set_dma_mode(mode)  argument
109 		return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA;  in sun_82077_fd_inb()
111 		return sbus_readb(&sun_fdc->data_82077);  in sun_82077_fd_inb()
113 		/* XXX: Is DCL on 0x80 in sun4m? */  in sun_82077_fd_inb()
114 		return sbus_readb(&sun_fdc->dir_82077);  in sun_82077_fd_inb()
129 		sbus_writeb(value, &sun_fdc->dor_82077);  in sun_82077_fd_outb()
132 		sbus_writeb(value, &sun_fdc->data_82077);  in sun_82077_fd_outb()
135 		sbus_writeb(value, &sun_fdc->dcr_82077);  in sun_82077_fd_outb()
138 		sbus_writeb(value, &sun_fdc->status_82077);  in sun_82077_fd_outb()
144 /* For pseudo-dma (Sun floppy drives have no real DMA available to
146  * three state variables.  doing_pdma tells our inline low-level
149  * floppy interrupt c-code.  I tried very hard but I could not get the
150  * pseudo-dma to work in c-code without getting many overruns and
151  * underruns.  If non-zero, doing_pdma encodes the direction of
169 static void sun_fd_set_dma_mode(int mode)  in sun_fd_set_dma_mode()  argument
171 	switch(mode) {  in sun_fd_set_dma_mode()
179 		printk("Unknown dma mode %d\n", mode);  in sun_fd_set_dma_mode()
230 			size--;  in sparc_floppy_irq()
261 		return ((error == 0) ? 0 : -1);  in sun_fd_request_irq()
272 	/* XXX This isn't really correct. XXX */  in sun_get_dma_residue()
290 static int sun_pci_broken_drive = -1;
298 static struct sun_pci_dma_op sun_pci_dma_current = { -1U, 0, 0, NULL};
299 static struct sun_pci_dma_op sun_pci_dma_pending = { -1U, 0, 0, NULL};
321 	 * XXX: Due to SUN's broken floppy connector on AX and AXi  in sun_pci_fd_broken_outb()
341 	 * XXX: Due to SUN's broken floppy connector on AX and AXi  in sun_pci_fd_lde_broken_outb()
370 	sun_pci_dma_pending.addr = -1U;  in sun_pci_fd_enable_dma()
389 	if (sun_pci_dma_current.addr != -1U)  in sun_pci_fd_disable_dma()
394 	sun_pci_dma_current.addr = -1U;  in sun_pci_fd_disable_dma()
397 static void sun_pci_fd_set_dma_mode(int mode)  in sun_pci_fd_set_dma_mode()  argument
399 	if (mode == DMA_MODE_WRITE)  in sun_pci_fd_set_dma_mode()
404 	ebus_dma_prepare(&sun_pci_fd_ebus_dma, mode != DMA_MODE_WRITE);  in sun_pci_fd_set_dma_mode()
434 	return -EINVAL;  in sun_pci_fd_eject()
458 	while (!((status = inb(MSR)) & 0x80) && --timeout)  in sun_pci_fd_out_byte()
473 		while (!((status = inb(MSR)) & 0x80) && --timeout)  in sun_pci_fd_sensei()
501 	} while ((mask != 0x0f) && --timeout);  in sun_pci_fd_reset()
521 	} while (((status & 0xc0) == 0x80) && --timeout);  in sun_pci_fd_test_drive()
564 		if (!of_node_name_eq(dp->parent, "sbus"))  in sun_floppy_init()
572 		FLOPPY_IRQ = op->archdata.irqs[0];  in sun_floppy_init()
581 			for (dp = ebus_dp->child; dp; dp = dp->sibling) {  in sun_floppy_init()
594 		state_prop = of_get_property(op->dev.of_node, "status", NULL);  in sun_floppy_init()
598 		FLOPPY_IRQ = op->archdata.irqs[0];  in sun_floppy_init()
603 		auxio_reg = (void __iomem *) op->resource[2].start;  in sun_floppy_init()
606 		sun_floppy_dev = &op->dev;  in sun_floppy_init()
610 		/* XXX ioremap */  in sun_floppy_init()
612 			op->resource[1].start;  in sun_floppy_init()
625 		/* XXX ioremap */  in sun_floppy_init()
626 		sun_fdc = (struct sun_flpy_controller *) op->resource[0].start;  in sun_floppy_init()
644 		fdc_status = (unsigned long) &sun_fdc->status_82077;  in sun_floppy_init()
647 		 * XXX: Find out on which machines this is really needed.  in sun_floppy_init()
664 		for (dp = ebus_dp->child; dp; dp = dp->sibling) {  in sun_floppy_init()
670 					config = ecpp_op->resource[1].start;  in sun_floppy_init()
692 		/* Enable PC-AT mode. */  in sun_floppy_init()
710 			if (sun_pci_broken_drive != -1) {  in sun_floppy_init()
711 				sun_pci_broken_drive = 1 - sun_pci_broken_drive;  in sun_floppy_init()
719 	prop = of_get_property(op->dev.of_node, "status", NULL);  in sun_floppy_init()
730 		(op->resource[0].start +  in sun_floppy_init()
731 		 ((op->resource[0].flags & 0x1ffUL) << 32UL));  in sun_floppy_init()
734 	if (sbus_readb(&sun_fdc->status1_82077) == 0xff) {  in sun_floppy_init()
735 		sun_fdc = (struct sun_flpy_controller *)-1;  in sun_floppy_init()
755         fdc_status = (unsigned long) &sun_fdc->status_82077;  in sun_floppy_init()