diff --git a/sys/arch/pmax/include/bus.h b/sys/arch/pmax/include/bus.h new file mode 100644 index 000000000000..dee437d13301 --- /dev/null +++ b/sys/arch/pmax/include/bus.h @@ -0,0 +1,206 @@ +/* $NetBSD: bus.h,v 1.1 1997/06/08 05:10:25 jonathan Exp $ */ + +/* + * Copyright Notice: + * + * Copyright (c) 1995, 1996, 1997 + * Jonathan R. Stone. All rights reserved. + * + * License: + * + * This License applies to this software ("Software"), created + * by Jonathan Stone ("Author"). + * + * You may use, copy, modify and redistribute this Software without + * charge, in either source code form, binary form, or both, on the + * following conditions: + * + * 1. (a) Binary code: (i) a complete copy of the above copyright notice + * must be included within each copy of the Software in binary code form, + * and (ii) a complete copy of the above copyright notice and all terms + * of this License as presented here must be included within each copy of + * all documentation accompanying or associated with binary code, in any + * medium, along with a list of the software modules to which the license + * applies. + * + * (b) Source Code: A complete copy of the above copyright notice and all + * terms of this License as presented here must be included within: (i) + * each copy of the Software in source code form, and (ii) each copy of + * all accompanying or associated documentation, in any medium. + * + * 2. The following Acknowledgment must be used in communications + * involving the Software as described below: + * + * This product includes software developed by + * Jonathan Stone for the NetBSD Project. + * + * The Acknowledgment must be conspicuously and completely displayed + * whenever the Software, or any software, products or systems containing + * the Software, are mentioned in advertising, marketing, informational + * or publicity materials of any kind, whether in print, electronic or + * other media (except for information provided to support use of + * products containing the Software by existing users or customers). + * + * 3. The name of the Author may not be used to endorse or promote + * products derived from this Software without specific prior written + * permission (conditions (1) and (2) above are not considered + * endorsement or promotion). + * + * 4. This license applies to: (a) all copies of the Software, whether + * partial or whole, original or modified, and (b) your actions, and the + * actions of all those who may act on your behalf. All uses not + * expressly permitted are reserved to the Author. + * + * 5. Disclaimer. THIS SOFTWARE IS MADE AVAILABLE BY THE AUTHOR TO THE + * PUBLIC FOR FREE AND "AS IS.'' ALL USERS OF THIS FREE SOFTWARE ARE + * SOLELY AND ENTIRELY RESPONSIBLE FOR THEIR OWN CHOICE AND USE OF THIS + * SOFTWARE FOR THEIR OWN PURPOSES. BY USING THIS SOFTWARE, EACH USER + * AGREES THAT THE AUTHOR SHALL NOT BE LIABLE FOR DAMAGES OF ANY KIND IN + * RELATION TO ITS USE OR PERFORMANCE. + * + * 6. If you have a special need for a change in one or more of these + * license conditions, please contact the Author via electronic mail to + * + * jonathan@NetBSD.ORG + * + * or via the contact information on + * + * http://www.NetBSD.ORG/People/Pages/jonathan.html + */ + + +/* + * NetBSD machine-indepedent bus accessor macros/functions for Decstations. + */ +#ifndef _PMAX_BUS_H_ +#define _PMAX_BUS_H_ + +/* + * Bus address and size types + */ +typedef u_long bus_addr_t; +typedef u_long bus_size_t; + +/* + * Access types for bus resources and addresses. + */ +typedef int bus_space_tag_t; +typedef u_long bus_space_handle_t; + + +/* + * Read or write a 1, 2, or 4-byte quantity from/to a bus-space + * address, as defined by (space-tag, handle, offset + */ +#define bus_space_read_1(t, h, o) \ + (*(volatile u_int8_t *)((h) + (o))) + +#define bus_space_read_2(t, h, o) \ + (*(volatile u_int16_t *)((h) + (o))) + +#define bus_space_read_4(t, h, o) \ + (*(volatile u_int32_t *)((h) + (o))) + +#define bus_space_write_1(t, h, o, v) \ + do { ((void)(*(volatile u_int8_t *)((h) + (o)) = (v))); } while (0) + +#define bus_space_write_2(t, h, o, v) \ + do { ((void)(*(volatile u_int16_t *)((h) + (o)) = (v))); } while (0) + +#define bus_space_write_4(t, h, o, v) \ + do { ((void)(*(volatile u_int32_t *)((h) + (o)) = (v))); } while (0) + +/* + * Read `count' 1, 2, or 4-byte quantities from bus-space + * address, defined by (space-tag, handle, offset). + * Copy to the specified buffer address. + */ +#define bus_space_read_multi_1(t, h, o, a, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + ((u_char *)(a))[__i] = bus_space_read_1(t, h, o); \ + } while (0) + + +#define bus_space_read_multi_2(t, h, o, a, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + ((u_int16t_t *)(a))[__i] = bus_space_read_2(t, h, o); \ + } while (0) + +#define bus_space_read_multi_4(t, h, o, a, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + ((u_int32_t *)(a))[__i] = bus_space_read_4(t, h, o); \ + } while (0) + +/* + * Write `count' 1, 2, or 4-byte quantities to a bus-space + * address, defined by (space-tag, handle, offset). + * Copy from the specified buffer address. + */ +#define bus_space_write_multi_1(t, h, o, a, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + bus_space_write_1(t, h, o, ((u_char *)(a))[__i]); \ + } while (0) + +#define bus_space_write_multi_2(t, h, o, a, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + bus_space_write_2(t, h, o, ((u_int16_t *)(a))[__i]); \ + } while (0) + +#define bus_space_write_multi_4(t, h, o, a, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + bus_space_write_4(t, h, o, ((u_int32_t *)(a))[__i]); \ + } while (0) + +/* + * Copy `count' 1, 2, or 4-byte values from one bus-space address + * (t, h, o triple) to another. + */ +#define bus_space_copy_multi_1(t, h1, h2, o1, o2, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + bus_space_write_1(t, h1, o1, bus_space_read_1(t, h2, o2)); \ + } while (0) + +#define bus_space_copy_multi_2(t, h1, h2, o1, o2, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + bus_space_write_2(t, h1, o1, bus_space_read_2(t, h2, o2)); \ + while (0) + +#define bus_space_copy_multi_4(t, h1, h2, o1, o2, c) \ + do { \ + register int __i ; \ + for (__i = 0; i < (c); i++) \ + bus_space_write_4(t, h1, o1, bus_space_read_4(t, h2, o2)); \ + } while (0) + + +/* + * Bus-space barriers. + * Since DECstation DMA is non-cache-coherent, we have to handle + * consistency in software anyway (e.g., via bus -DMA, or by ensuring + * that DMA buffers are referenced via uncached address space. + * For now, simply do CPU writebuffer flushes and export the flags + * to MI code. + */ +#define bus_space_barrier(t, h, o, l, f) \ + ((void) wbflush(); + +#define BUS_BARRIER_READ 0x01 +#define BUS_BARRIER_WRITE 0x02 + +#endif /* _PMAX_BUS_H_ */