Home | History | Annotate | Line # | Download | only in xscale
i80321var.h revision 1.2 
      1 /*	$NetBSD: i80321var.h,v 1.2 2002/07/25 15:00:49 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef _ARM_XSCALE_I80321VAR_H_
     39 #define	_ARM_XSCALE_I80321VAR_H_
     40 
     41 #include <sys/queue.h>
     42 #include <dev/pci/pcivar.h>
     43 
     44 /*
     45  * There are roughly 32 interrupt sources.
     46  */
     47 #define	NIRQ		32
     48 
     49 struct intrhand {
     50 	TAILQ_ENTRY(intrhand) ih_list;	/* link on intrq list */
     51 	int (*ih_func)(void *);		/* handler */
     52 	void *ih_arg;			/* arg for handler */
     53 	int ih_ipl;			/* IPL_* */
     54 	int ih_irq;			/* IRQ number */
     55 };
     56 
     57 #define	IRQNAMESIZE	sizeof("iop321 irq 31")
     58 
     59 struct intrq {
     60 	TAILQ_HEAD(, intrhand) iq_list;	/* handler list */
     61 	struct evcnt iq_ev;		/* event counter */
     62 	int iq_mask;			/* IRQs to mask while handling */
     63 	int iq_levels;			/* IPL_*'s this IRQ has */
     64 	int iq_ist;			/* share type */
     65 	char iq_name[IRQNAMESIZE];	/* interrupt name */
     66 };
     67 
     68 struct i80321_softc {
     69 	struct device sc_dev;		/* generic device glue */
     70 
     71 	int sc_is_host;			/* indicates if we're a host or
     72 					   plugged into another host */
     73 
     74 	/*
     75 	 * This is the bus_space and handle used to access the
     76 	 * i80321 itself.  This is filled in by the board-specific
     77 	 * front-end.
     78 	 */
     79 	bus_space_tag_t sc_st;
     80 	bus_space_handle_t sc_sh;
     81 
     82 	/* Handles for the various subregions. */
     83 	bus_space_handle_t sc_atu_sh;
     84 	bus_space_handle_t sc_mcu_sh;
     85 
     86 	/*
     87 	 * We expect the board-specific front-end to have already mapped
     88 	 * the PCI I/O space .. it is only 64K, and I/O mappings tend to
     89 	 * be smaller than a page size, so it's generally more efficient
     90 	 * to map them all into virtual space in one fell swoop.
     91 	 */
     92 	vaddr_t	sc_iow_vaddr;		/* I/O window vaddr */
     93 
     94 	/*
     95 	 * Variables that define the Inbound windows.  The base address of
     96 	 * 0-2 are configured by a host via BARs.  The xlate variable
     97 	 * defines the start of the local address space that it maps to.
     98 	 * The size variable defines the byte size.
     99 	 *
    100 	 * The first 3 windows are for incoming PCI memory read/write
    101 	 * cycles from a host.  The 4th window, not configured by the
    102 	 * host (as it outside the normal BAR range) is the inbound
    103 	 * window for PCI devices controlled by the i80321.
    104 	 */
    105 	struct {
    106 		uint32_t iwin_base_hi;
    107 		uint32_t iwin_base_lo;
    108 		uint32_t iwin_xlate;
    109 		uint32_t iwin_size;
    110 	} sc_iwin[4];
    111 
    112 	/*
    113 	 * Variables that define the Outbound windows.
    114 	 */
    115 	struct {
    116 		uint32_t owin_xlate_lo;
    117 		uint32_t owin_xlate_hi;
    118 	} sc_owin[2];
    119 
    120 	/*
    121 	 * This is the PCI address that the Outbound I/O
    122 	 * window maps to.
    123 	 */
    124 	uint32_t sc_ioout_xlate;
    125 
    126 	/* Bus space, DMA, and PCI tags for the PCI bus (private devices). */
    127 	struct bus_space sc_pci_iot;
    128 	struct bus_space sc_pci_memt;
    129 	struct arm32_bus_dma_tag sc_pci_dmat;
    130 	struct arm32_pci_chipset sc_pci_chipset;
    131 
    132 	/* GPIO state */
    133 	uint8_t sc_gpio_dir;	/* GPIO pin direction (1 == output) */
    134 	uint8_t sc_gpio_val;	/* GPIO output pin value */
    135 
    136 	/* DMA tag for local devices. */
    137 	struct arm32_bus_dma_tag sc_local_dmat;
    138 };
    139 
    140 extern struct bus_space i80321_bs_tag;
    141 extern struct i80321_softc *i80321_softc;
    142 
    143 extern void (*i80321_hardclock_hook)(void);
    144 
    145 void	i80321_sdram_bounds(bus_space_tag_t, bus_space_handle_t,
    146 	    paddr_t *, psize_t *);
    147 
    148 void	i80321_calibrate_delay(void);
    149 
    150 void	i80321_icu_init(void);
    151 void	i80321_intr_init(void);
    152 void	*i80321_intr_establish(int, int, int (*)(void *), void *);
    153 void	i80321_intr_disestablish(void *);
    154 
    155 void	i80321_bs_init(bus_space_tag_t, void *);
    156 void	i80321_io_bs_init(bus_space_tag_t, void *);
    157 void	i80321_mem_bs_init(bus_space_tag_t, void *);
    158 
    159 void	i80321_local_dma_init(bus_dma_tag_t, void *);
    160 
    161 void	i80321_pci_dma_init(bus_dma_tag_t, void *);
    162 
    163 void	i80321_pci_init(pci_chipset_tag_t, void *);
    164 
    165 void	i80321_attach(struct i80321_softc *);
    166 
    167 #endif /* _ARM_XSCALE_I80321VAR_H_ */
    168