1 // SPDX-License-Identifier: GPL-2.0-or-later
14  *      (C) Copyright 2003 Grant Grundler <grundler parisc-linux org>
15  *	(C) Copyright 2005 Kyle McMartin <kyle@parisc-linux.org>
23  *      works with serial. -- John Marvin <jsm@fc.hp.com>
26  *         -- Kyle McMartin <kyle@parisc-linux.org>
51  * a physical device connected.
106 	 * Bits 6-3:	zero  in superio_interrupt()
107 	 * Bits 2-0:	highest priority, active requesting interrupt ID (0-7)  in superio_interrupt()
110 		/* I suspect "spurious" interrupts are from unmasking an IRQ.  in superio_interrupt()
112 		 * just call the handler for that IRQ as if it were pending.  in superio_interrupt()
117 	/* Check to see which device is interrupting */  in superio_interrupt()
137 	/* Call the appropriate device's interrupt */  in superio_interrupt()
140 	/* set EOI - forces a new interrupt if a lower priority device  in superio_interrupt()
147 /* Initialize Super I/O device */
152 	struct pci_dev *pdev = sio->lio_pdev;  in superio_init()
156 	if (sio->suckyio_irq_enabled)  in superio_init()
160 	BUG_ON(!sio->usb_pdev);  in superio_init()
162 	/* use the IRQ iosapic found for USB INT D... */  in superio_init()
163 	pdev->irq = sio->usb_pdev->irq;  in superio_init()
166 	sio->usb_pdev->irq = superio_fixup_irq(sio->usb_pdev);  in superio_init()
168 	printk(KERN_INFO PFX "Found NS87560 Legacy I/O device at %s (IRQ %i)\n",  in superio_init()
169 	       pci_name(pdev), pdev->irq);  in superio_init()
171 	pci_read_config_dword (pdev, SIO_SP1BAR, &sio->sp1_base);  in superio_init()
172 	sio->sp1_base &= ~1;  in superio_init()
173 	printk(KERN_INFO PFX "Serial port 1 at 0x%x\n", sio->sp1_base);  in superio_init()
175 	pci_read_config_dword (pdev, SIO_SP2BAR, &sio->sp2_base);  in superio_init()
176 	sio->sp2_base &= ~1;  in superio_init()
177 	printk(KERN_INFO PFX "Serial port 2 at 0x%x\n", sio->sp2_base);  in superio_init()
179 	pci_read_config_dword (pdev, SIO_PPBAR, &sio->pp_base);  in superio_init()
180 	sio->pp_base &= ~1;  in superio_init()
181 	printk(KERN_INFO PFX "Parallel port at 0x%x\n", sio->pp_base);  in superio_init()
183 	pci_read_config_dword (pdev, SIO_FDCBAR, &sio->fdc_base);  in superio_init()
184 	sio->fdc_base &= ~1;  in superio_init()
185 	printk(KERN_INFO PFX "Floppy controller at 0x%x\n", sio->fdc_base);  in superio_init()
186 	pci_read_config_dword (pdev, SIO_ACPIBAR, &sio->acpi_base);  in superio_init()
187 	sio->acpi_base &= ~1;  in superio_init()
188 	printk(KERN_INFO PFX "ACPI at 0x%x\n", sio->acpi_base);  in superio_init()
192 	request_region (sio->acpi_base, 0x1f, "acpi");  in superio_init()
208 	 *     space access.  PCI is by nature a 32-bit bus and config  in superio_init()
212 	/* 0x64 - 0x67 :  in superio_init()
220 	/* 0x68 - 0x6b :  in superio_init()
228 	/* 0x6c - 0x6f :  in superio_init()
236 	/* 0x70 - 0x73 :  in superio_init()
245 	outb (0x00,IC_PIC1+1);	/* ICW2: interrupt vector table - not used */  in superio_init()
251 	outb (0xc2,IC_PIC1+0);  /* OCW2: priority (3-7,0-2) */  in superio_init()
267 	outb(1, sio->acpi_base + USB_REG_CR);  in superio_init()
268 	if (inb(sio->acpi_base + USB_REG_CR) & 1)  in superio_init()
273 	if (request_irq(pdev->irq, superio_interrupt, 0,  in superio_init()
276 		printk(KERN_ERR PFX "could not get irq\n");  in superio_init()
281 	sio->suckyio_irq_enabled = 1;  in superio_init()
287 	unsigned int irq = d->irq;  in superio_mask_irq()  local
290 	if ((irq < 1) || (irq == 2) || (irq > 7)) {  in superio_mask_irq()
291 		printk(KERN_ERR PFX "Illegal irq number.\n");  in superio_mask_irq()
299 	r8 |= (1 << irq);  in superio_mask_irq()
305 	unsigned int irq = d->irq;  in superio_unmask_irq()  local
308 	if ((irq < 1) || (irq == 2) || (irq > 7)) {  in superio_unmask_irq()
309 		printk(KERN_ERR PFX "Illegal irq number (%d).\n", irq);  in superio_unmask_irq()
316 	r8 &= ~(1 << irq);  in superio_unmask_irq()
340 	fn = PCI_FUNC(pcidev->devfn);  in superio_fixup_irq()
342 	/* Verify the function number matches the expected device id. */  in superio_fixup_irq()
343 	if (expected_device[fn] != pcidev->device) {  in superio_fixup_irq()
345 		return -1;  in superio_fixup_irq()
349 		pcidev->vendor, pcidev->device,  in superio_fixup_irq()
359 	 * We don't allocate a SuperIO irq for the legacy IO function,  in superio_fixup_irq()
360 	 * since it is a "bridge". Instead, we will allocate irq's for  in superio_fixup_irq()
361 	 * each legacy device as they are initialized.  in superio_fixup_irq()
364 	switch(pcidev->device) {  in superio_fixup_irq()
370 		return -1;  in superio_fixup_irq()
376 		local_irq = -1;  in superio_fixup_irq()
399 	serial_port.irq		= SP1_IRQ;  in superio_serial_init()
409 	serial_port.irq		= SP2_IRQ;  in superio_serial_init()
426 			0 /* shared irq flags */))  in superio_parport_init()
437 	pdev->class |= 0x5;  in superio_fixup_pci()
438 	pci_write_config_byte(pdev, PCI_CLASS_PROG, pdev->class);  in superio_fixup_pci()
458 		dev->vendor, dev->device,  in superio_probe()
459 		dev->subsystem_vendor, dev->subsystem_device,  in superio_probe()
460 		dev->class);  in superio_probe()
462 	BUG_ON(!sio->suckyio_irq_enabled);	/* Enabled by PCI_FIXUP_FINAL */  in superio_probe()
464 	if (dev->device == PCI_DEVICE_ID_NS_87560_LIO) {	/* Function 1 */  in superio_probe()
469 	} else if (dev->device == PCI_DEVICE_ID_NS_87415) {	/* Function 0 */  in superio_probe()
471 	} else if (dev->device == PCI_DEVICE_ID_NS_87560_USB) {	/* Function 2 */  in superio_probe()
477 	/* Let appropriate other driver claim this device. */  in superio_probe()
478 	return -ENODEV;  in superio_probe()