1 /* $Id: shmem.c,v 1.1.4.1 2001/11/20 14:19:37 kai Exp $
3 * Copyright (C) 1996 SpellCaster Telecommunications Inc.
5 * Card functions implementing ISDN4Linux functionality
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
10 * For more information, please contact gpl-info@spellcast.com or write:
12 * SpellCaster Telecommunications Inc.
13 * 5621 Finch Avenue East, Unit #3
14 * Scarborough, Ontario Canada
17 * +1 (416) 297-6433 Facsimile
20 #define __NO_VERSION__
21 #include "includes.h" /* This must be first */
28 extern board *adapter[];
34 void *memcpy_toshmem(int card, void *dest, const void *src, size_t n)
40 if(!IS_VALID_CARD(card)) {
41 pr_debug("Invalid param: %d is not a valid card id\n", card);
45 if(n > SRAM_PAGESIZE) {
50 * determine the page to load from the address
52 ch = (unsigned long) dest / SRAM_PAGESIZE;
53 pr_debug("%s: loaded page %d\n",adapter[card]->devicename,ch);
55 * Block interrupts and load the page
60 outb(((adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
61 adapter[card]->ioport[adapter[card]->shmem_pgport]);
62 pr_debug("%s: set page to %#x\n",adapter[card]->devicename,
63 ((adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
64 ret = memcpy_toio(adapter[card]->rambase +
65 ((unsigned long) dest % 0x4000), src, n);
66 pr_debug("%s: copying %d bytes from %#x to %#x\n",adapter[card]->devicename, n,
67 (unsigned long) src, adapter[card]->rambase + ((unsigned long) dest %0x4000));
76 void *memcpy_fromshmem(int card, void *dest, const void *src, size_t n)
82 if(!IS_VALID_CARD(card)) {
83 pr_debug("Invalid param: %d is not a valid card id\n", card);
87 if(n > SRAM_PAGESIZE) {
92 * determine the page to load from the address
94 ch = (unsigned long) src / SRAM_PAGESIZE;
95 pr_debug("%s: loaded page %d\n",adapter[card]->devicename,ch);
99 * Block interrupts and load the page
104 outb(((adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
105 adapter[card]->ioport[adapter[card]->shmem_pgport]);
106 pr_debug("%s: set page to %#x\n",adapter[card]->devicename,
107 ((adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
108 ret = memcpy_fromio(dest,(void *)(adapter[card]->rambase +
109 ((unsigned long) src % 0x4000)), n);
110 /* pr_debug("%s: copying %d bytes from %#x to %#x\n",
111 adapter[card]->devicename, n,
112 adapter[card]->rambase + ((unsigned long) src %0x4000), (unsigned long) dest); */
113 restore_flags(flags);
118 void *memset_shmem(int card, void *dest, int c, size_t n)
124 if(!IS_VALID_CARD(card)) {
125 pr_debug("Invalid param: %d is not a valid card id\n", card);
129 if(n > SRAM_PAGESIZE) {
134 * determine the page to load from the address
136 ch = (unsigned long) dest / SRAM_PAGESIZE;
137 pr_debug("%s: loaded page %d\n",adapter[card]->devicename,ch);
140 * Block interrupts and load the page
145 outb(((adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
146 adapter[card]->ioport[adapter[card]->shmem_pgport]);
147 pr_debug("%s: set page to %#x\n",adapter[card]->devicename,
148 ((adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
149 ret = memset_io(adapter[card]->rambase +
150 ((unsigned long) dest % 0x4000), c, n);
151 restore_flags(flags);