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Diffstat (limited to 'sys/arch/sgi/xbow/xbow.h')
| -rw-r--r-- | sys/arch/sgi/xbow/xbow.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/sys/arch/sgi/xbow/xbow.h b/sys/arch/sgi/xbow/xbow.h new file mode 100644 index 00000000000..1a5bed14da6 --- /dev/null +++ b/sys/arch/sgi/xbow/xbow.h @@ -0,0 +1,125 @@ +/* $OpenBSD: xbow.h,v 1.1 2008/04/07 22:47:40 miod Exp $ */ + +/* + * Copyright (c) 2008 Miodrag Vallat. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _XBOW_H_ +#define _XBOW_H_ + +/* + * Devices connected to the XBow are called ``widgets'' and are + * identified by a common widget memory area at the beginning of their + * memory space. + * + * Each widget has its own memory space, upon which windows of different + * sizes can be defined. OpenBSD only cares about the shortest window + * (which fits in 32 bits of address space), and the longest window (which + * provides access to the complete widget space). + * + * Apart from the crossbow itself being widget #0, the widgets are divided + * in two groups: widgets #8 to #b are the ``upper'' widgets, while widgets + * #c to #f are the ``lower'' widgets. + * + * Widgets are uniquely identified with their widget number on the XBow + * bus. However, the way they are mapped and accessed will depend on the + * processor (well, the processor board node) requesting access. Hence the + * two parameters needed to map a widget. + */ + +extern paddr_t (*xbow_widget_short)(int16_t, u_int); +extern paddr_t (*xbow_widget_long)(int16_t, u_int); +extern unsigned int xbow_long_shift; + +extern int (*xbow_widget_id)(int16_t, u_int, uint32_t *); +extern int xbow_intr_widget; +extern unsigned int xbow_intr_widget_register; + +extern int (*xbow_intr_widget_intr_register)(int, int, int *); +extern int (*xbow_intr_widget_intr_establish)(int (*)(void *), void *, + int, int, const char *); +extern void (*xbow_intr_widget_intr_disestablish)(int); + +/* + * Common Widget Registers. Every widget provides them. + */ + +/* all registers are 32 bits within big-endian 64 bit blocks */ +#define WIDGET_ID 0x0004 +#define WIDGET_ID_REV_MASK 0xf0000000 +#define WIDGET_ID_REV_SHIFT 28 +#define WIDGET_ID_PRODUCT_MASK 0x0ffff000 +#define WIDGET_ID_PRODUCT_SHIFT 12 +#define WIDGET_ID_VENDOR_MASK 0x00000ffe +#define WIDGET_ID_VENDOR_SHIFT 1 +#define WIDGET_STATUS 0x000c +#define WIDGET_ERR_ADDR_UPPER 0x0014 +#define WIDGET_ERR_ADDR_LOWER 0x001c +#define WIDGET_CONTROL 0x0024 +#define WIDGET_REQ_TIMEOUT 0x002c +#define WIDGET_INTDEST_ADDR_UPPER 0x0034 +#define WIDGET_INTDEST_ADDR_LOWER 0x003c +#define WIDGET_ERR_CMD_WORD 0x0044 +#define WIDGET_LLP_CFG 0x004c +#define WIDGET_TFLUSH 0x0054 + +/* + * Crossbow Specific Registers. + */ + +#define XBOW_WID_ARB_RELOAD 0x005c +#define XBOW_PERFCNTR_A 0x0064 +#define XBOW_PERFCNTR_B 0x006c +#define XBOW_NIC 0x0074 +#define XBOW_WIDGET_LINK(w) (0x0100 + ((w) & 7) * 0x0040) + +/* + * Per-widget ``Link'' Register Set. + */ +#define WIDGET_LINK_IBF 0x0004 +#define WIDGET_LINK_CONTROL 0x000c +#define WIDGET_CONTROL_ALIVE 0x80000000 +#define WIDGET_LINK_STATUS 0x0014 +#define WIDGET_STATUS_ALIVE 0x80000000 +#define WIDGET_LINK_ARB_UPPER 0x001c +#define WIDGET_LINK_ARB_LOWER 0x0024 +#define WIDGET_LINK_STATUS_CLEAR 0x002c +#define WIDGET_LINK_RESET 0x0034 +#define WIDGET_LINK_AUX_STATUS 0x003c + + +struct xbow_attach_args { + int xaa_widget; + + uint32_t xaa_vendor; + uint32_t xaa_product; + uint32_t xaa_revision; + + bus_space_tag_t xaa_short_tag; + bus_space_tag_t xaa_long_tag; +}; + +void xbow_build_bus_space(struct mips_bus_space *, int, int, int); +int xbow_intr_register(int, int, int *); +int xbow_intr_establish(int (*)(void *), void *, int, int, const char *); +void xbow_intr_disestablish(int); + +uint8_t xbow_read_1(bus_space_tag_t, bus_space_handle_t, bus_size_t); +uint16_t xbow_read_2(bus_space_tag_t, bus_space_handle_t, bus_size_t); +void xbow_write_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint8_t); +void xbow_write_2(bus_space_tag_t, bus_space_handle_t, bus_size_t, + uint16_t); + +#endif /* _XBOW_H_ */ |