[linux-2.6-block.git] / drivers / isdn / sc / shmem.c

/* $Id: shmem.c,v 1.2.10.1 2001/09/23 22:24:59 kai Exp $
 *
 * Copyright (C) 1996  SpellCaster Telecommunications Inc.
 *
 * Card functions implementing ISDN4Linux functionality
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 *
 * For more information, please contact gpl-info@spellcast.com or write:
 *
 *     SpellCaster Telecommunications Inc.
 *     5621 Finch Avenue East, Unit #3
 *     Scarborough, Ontario  Canada
 *     M1B 2T9
 *     +1 (416) 297-8565
 *     +1 (416) 297-6433 Facsimile
 */

#include "includes.h"		/* This must be first */
#include "hardware.h"
#include "card.h"

/*
 * Main adapter array
 */
extern board *sc_adapter[];
extern int cinst;

/*
 *
 */
void memcpy_toshmem(int card, void *dest, const void *src, size_t n)
{
	unsigned long flags;
	unsigned char ch;

	if(!IS_VALID_CARD(card)) {
		pr_debug("Invalid param: %d is not a valid card id\n", card);
		return;
	}

	if(n > SRAM_PAGESIZE) {
		return;
	}

	/*
	 * determine the page to load from the address
	 */
	ch = (unsigned long) dest / SRAM_PAGESIZE;
	pr_debug("%s: loaded page %d\n", sc_adapter[card]->devicename,ch);
	/*
	 * Block interrupts and load the page
	 */
	spin_lock_irqsave(&sc_adapter[card]->lock, flags);

	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
		sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
	memcpy_toio(sc_adapter[card]->rambase +
		((unsigned long) dest % 0x4000), src, n);
	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
		((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
	pr_debug("%s: copying %d bytes from %#x to %#x\n",
		sc_adapter[card]->devicename, n,
		(unsigned long) src,
		sc_adapter[card]->rambase + ((unsigned long) dest %0x4000));
}

/*
 * Reverse of above
 */
void memcpy_fromshmem(int card, void *dest, const void *src, size_t n)
{
	unsigned long flags;
	unsigned char ch;

	if(!IS_VALID_CARD(card)) {
		pr_debug("Invalid param: %d is not a valid card id\n", card);
		return;
	}

	if(n > SRAM_PAGESIZE) {
		return;
	}

	/*
	 * determine the page to load from the address
	 */
	ch = (unsigned long) src / SRAM_PAGESIZE;
	pr_debug("%s: loaded page %d\n", sc_adapter[card]->devicename,ch);
	
	
	/*
	 * Block interrupts and load the page
	 */
	spin_lock_irqsave(&sc_adapter[card]->lock, flags);

	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
		sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
	memcpy_fromio(dest,(void *)(sc_adapter[card]->rambase +
		((unsigned long) src % 0x4000)), n);
	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
		((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
/*	pr_debug("%s: copying %d bytes from %#x to %#x\n",
		sc_adapter[card]->devicename, n,
		sc_adapter[card]->rambase + ((unsigned long) src %0x4000), (unsigned long) dest); */
}

void memset_shmem(int card, void *dest, int c, size_t n)
{
	unsigned long flags;
	unsigned char ch;

	if(!IS_VALID_CARD(card)) {
		pr_debug("Invalid param: %d is not a valid card id\n", card);
		return;
	}

	if(n > SRAM_PAGESIZE) {
		return;
	}

	/*
	 * determine the page to load from the address
	 */
	ch = (unsigned long) dest / SRAM_PAGESIZE;
	pr_debug("%s: loaded page %d\n",sc_adapter[card]->devicename,ch);

	/*
	 * Block interrupts and load the page
	 */
	spin_lock_irqsave(&sc_adapter[card]->lock, flags);

	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
		sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
	memset_io(sc_adapter[card]->rambase +
		((unsigned long) dest % 0x4000), c, n);
	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
		((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
}
Commit	Line	Data
1da177e4 LT	1	/* $Id: shmem.c,v 1.2.10.1 2001/09/23 22:24:59 kai Exp $
	2	*
	3	* Copyright (C) 1996 SpellCaster Telecommunications Inc.
	4	*
	5	* Card functions implementing ISDN4Linux functionality
	6	*
	7	* This software may be used and distributed according to the terms
	8	* of the GNU General Public License, incorporated herein by reference.
	9	*
	10	* For more information, please contact gpl-info@spellcast.com or write:
	11	*
	12	* SpellCaster Telecommunications Inc.
	13	* 5621 Finch Avenue East, Unit #3
	14	* Scarborough, Ontario Canada
	15	* M1B 2T9
	16	* +1 (416) 297-8565
	17	* +1 (416) 297-6433 Facsimile
	18	*/
	19
	20	#include "includes.h" /* This must be first */
	21	#include "hardware.h"
	22	#include "card.h"
	23
	24	/*
	25	* Main adapter array
	26	*/
	27	extern board *sc_adapter[];
	28	extern int cinst;
	29
	30	/*
	31	*
	32	*/
	33	void memcpy_toshmem(int card, void dest, const void src, size_t n)
	34	{
	35	unsigned long flags;
	36	unsigned char ch;
	37
	38	if(!IS_VALID_CARD(card)) {
	39	pr_debug("Invalid param: %d is not a valid card id\n", card);
	40	return;
	41	}
	42
	43	if(n > SRAM_PAGESIZE) {
	44	return;
	45	}
	46
	47	/*
	48	* determine the page to load from the address
	49	*/
	50	ch = (unsigned long) dest / SRAM_PAGESIZE;
	51	pr_debug("%s: loaded page %d\n", sc_adapter[card]->devicename,ch);
	52	/*
	53	* Block interrupts and load the page
	54	*/
	55	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
	56
	57	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) \| 0x80,
	58	sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
	59	memcpy_toio(sc_adapter[card]->rambase +
	60	((unsigned long) dest % 0x4000), src, n);
	61	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
	62	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
	63	((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)\|0x80);
	64	pr_debug("%s: copying %d bytes from %#x to %#x\n",
65	sc_adapter[card]->devicename, n,
66	(unsigned long) src,
67	sc_adapter[card]->rambase + ((unsigned long) dest %0x4000));
68	}
69
70	/*
71	* Reverse of above
72	*/
73	void memcpy_fromshmem(int card, void dest, const void src, size_t n)
74	{
75	unsigned long flags;
76	unsigned char ch;
77
78	if(!IS_VALID_CARD(card)) {
79	pr_debug("Invalid param: %d is not a valid card id\n", card);
80	return;
81	}
82
83	if(n > SRAM_PAGESIZE) {
84	return;
85	}
86
87	/*
88	* determine the page to load from the address
89	*/
90	ch = (unsigned long) src / SRAM_PAGESIZE;
91	pr_debug("%s: loaded page %d\n", sc_adapter[card]->devicename,ch);
92
93
94	/*
95	* Block interrupts and load the page
96	*/
97	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
98
99	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) \| 0x80,
100	sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
101	memcpy_fromio(dest,(void *)(sc_adapter[card]->rambase +
102	((unsigned long) src % 0x4000)), n);
103	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
104	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
105	((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)\|0x80);
106	/* pr_debug("%s: copying %d bytes from %#x to %#x\n",
107	sc_adapter[card]->devicename, n,
108	sc_adapter[card]->rambase + ((unsigned long) src %0x4000), (unsigned long) dest); */
109	}
110
111	void memset_shmem(int card, void *dest, int c, size_t n)
112	{
113	unsigned long flags;
114	unsigned char ch;
115
116	if(!IS_VALID_CARD(card)) {
117	pr_debug("Invalid param: %d is not a valid card id\n", card);
118	return;
119	}
120
121	if(n > SRAM_PAGESIZE) {
122	return;
123	}
124
125	/*
126	* determine the page to load from the address
127	*/
128	ch = (unsigned long) dest / SRAM_PAGESIZE;
129	pr_debug("%s: loaded page %d\n",sc_adapter[card]->devicename,ch);
130
131	/*
132	* Block interrupts and load the page
133	*/
134	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
135
136	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) \| 0x80,
137	sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
138	memset_io(sc_adapter[card]->rambase +
139	((unsigned long) dest % 0x4000), c, n);
140	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
141	((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)\|0x80);
142	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
143	}