xref: /kernel/linux/linux-5.10/arch/parisc/include/asm/superio.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PARISC_SUPERIO_H
#define _PARISC_SUPERIO_H

#define IC_PIC1    0x20		/* PCI I/O address of master 8259 */
#define IC_PIC2    0xA0		/* PCI I/O address of slave */

/* Config Space Offsets to configuration and base address registers */
#define SIO_CR     0x5A		/* Configuration Register */
#define SIO_ACPIBAR 0x88	/* ACPI BAR */
#define SIO_FDCBAR 0x90		/* Floppy Disk Controller BAR */
#define SIO_SP1BAR 0x94		/* Serial 1 BAR */
#define SIO_SP2BAR 0x98		/* Serial 2 BAR */
#define SIO_PPBAR  0x9C		/* Parallel BAR */

#define TRIGGER_1  0x67		/* Edge/level trigger register 1 */
#define TRIGGER_2  0x68		/* Edge/level trigger register 2 */

/* Interrupt Routing Control registers */
#define CFG_IR_SER    0x69	/* Serial 1 [0:3] and Serial 2 [4:7] */
#define CFG_IR_PFD    0x6a	/* Parallel [0:3] and Floppy [4:7] */
#define CFG_IR_IDE    0x6b	/* IDE1     [0:3] and IDE2 [4:7] */
#define CFG_IR_INTAB  0x6c	/* PCI INTA [0:3] and INT B [4:7] */
#define CFG_IR_INTCD  0x6d	/* PCI INTC [0:3] and INT D [4:7] */
#define CFG_IR_PS2    0x6e	/* PS/2 KBINT [0:3] and Mouse [4:7] */
#define CFG_IR_FXBUS  0x6f	/* FXIRQ[0] [0:3] and FXIRQ[1] [4:7] */
#define CFG_IR_USB    0x70	/* FXIRQ[2] [0:3] and USB [4:7] */
#define CFG_IR_ACPI   0x71	/* ACPI SCI [0:3] and reserved [4:7] */

#define CFG_IR_LOW     CFG_IR_SER	/* Lowest interrupt routing reg */
#define CFG_IR_HIGH    CFG_IR_ACPI	/* Highest interrupt routing reg */

/* 8259 operational control words */
#define OCW2_EOI   0x20		/* Non-specific EOI */
#define OCW2_SEOI  0x60		/* Specific EOI */
#define OCW3_IIR   0x0A		/* Read request register */
#define OCW3_ISR   0x0B		/* Read service register */
#define OCW3_POLL  0x0C		/* Poll the PIC for an interrupt vector */

/* Interrupt lines. Only PIC1 is used */
#define USB_IRQ    1		/* USB */
#define SP1_IRQ    3		/* Serial port 1 */
#define SP2_IRQ    4		/* Serial port 2 */
#define PAR_IRQ    5		/* Parallel port */
#define FDC_IRQ    6		/* Floppy controller */
#define IDE_IRQ    7		/* IDE (pri+sec) */

/* ACPI registers */
#define USB_REG_CR	0x1f	/* USB Regulator Control Register */

#define SUPERIO_NIRQS   8

struct superio_device {
	u32 fdc_base;
	u32 sp1_base;
	u32 sp2_base;
	u32 pp_base;
	u32 acpi_base;
	int suckyio_irq_enabled;
	struct pci_dev *lio_pdev;       /* pci device for legacy IO (fn 1) */
	struct pci_dev *usb_pdev;       /* pci device for USB (fn 2) */
};

/*
 * Does NS make a 87415 based plug in PCI card? If so, because of this
 * macro we currently don't support it being plugged into a machine
 * that contains a SuperIO chip AND has CONFIG_SUPERIO enabled.
 *
 * This could be fixed by checking to see if function 1 exists, and
 * if it is SuperIO Legacy IO; but really now, is this combination
 * going to EVER happen?
 */

#define SUPERIO_IDE_FN 0 /* Function number of IDE controller */
#define SUPERIO_LIO_FN 1 /* Function number of Legacy IO controller */
#define SUPERIO_USB_FN 2 /* Function number of USB controller */

#define is_superio_device(x) \
	(((x)->vendor == PCI_VENDOR_ID_NS) && \
	(  ((x)->device == PCI_DEVICE_ID_NS_87415) \
	|| ((x)->device == PCI_DEVICE_ID_NS_87560_LIO) \
	|| ((x)->device == PCI_DEVICE_ID_NS_87560_USB) ) )

extern int superio_fixup_irq(struct pci_dev *pcidev); /* called by iosapic */

#endif /* _PARISC_SUPERIO_H */