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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [mips/] [kernel/] [tyne-c.c] - Blame information for rev 1777

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/*
 * Deskstation Tyne specific C parts
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1994, 1995 by Ralf Baechle
 */
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <asm/bootinfo.h>
#include <asm/cachectl.h>
#include <asm/dma.h>
#include <asm/io.h>
 
/*
 * How to access the FDC's registers.
 */
unsigned char deskstation_tyne_fd_inb(unsigned int port)
{
        return inb_p(port);
}
 
void deskstation_tyne_fd_outb(unsigned char value, unsigned int port)
{
        outb_p(value, port);
}
 
/*
 * How to access the floppy DMA functions.
 */
void deskstation_tyne_fd_enable_dma(void)
{
        enable_dma(FLOPPY_DMA);
}
 
void deskstation_tyne_fd_disable_dma(void)
{
        disable_dma(FLOPPY_DMA);
}
 
int deskstation_tyne_fd_request_dma(void)
{
        return request_dma(FLOPPY_DMA, "floppy");
}
 
void deskstation_tyne_fd_free_dma(void)
{
        free_dma(FLOPPY_DMA);
}
 
void deskstation_tyne_fd_clear_dma_ff(void)
{
        clear_dma_ff(FLOPPY_DMA);
}
 
int deskstation_tyne_fd_set_dma_mode(char mode)
{
        return set_dma_mode(FLOPPY_DMA, mode);
}
 
void deskstation_tyne_fd_set_dma_addr(unsigned int a)
{
        set_dma_addr(FLOPPY_DMA, addr);
}
 
void deskstation_tyne_fd_set_dma_count(unsigned int count)
{
        set_dma_count(FLOPPY_DMA, count);
}
 
int deskstation_tyne_fd_get_dma_residue(void)
{
        return get_dma_residue(FLOPPY_DMA);
}
 
void deskstation_tyne_fd_enable_irq(void)
{
        enable_irq(FLOPPY_IRQ);
}
 
void deskstation_tyne_fd_disable_irq(void)
{
        disable_irq(FLOPPY_IRQ);
}
 
void deskstation_tyne_fd_cacheflush(unsigned char *addr, unsigned int)
{
        sys_cacheflush((void *)addr, size, DCACHE);
}
 
 
/*
 * Tiny Tyne DMA buffer allocator
 *
 * Untested for a long time and changed again and again ...
 * Sorry, but no hardware to test ...
 */
static unsigned long allocated;
 
/*
 * Not very sophisticated, but should suffice for now...
 */
unsigned long deskstation_tyne_dma_alloc(size_t size)
{
        unsigned long ret = allocated;
        allocated += size;
        if (allocated > boot_info.dma_cache_size)
                ret = -1;
        return ret;
}
 
void deskstation_tyne_dma_init(void)
{
        if (boot_info.machtype != MACH_DESKSTATION_TYNE)
                return;
        allocated = 0;
        printk ("Deskstation Tyne DMA (%luk) buffer initialized.\n",
                boot_info.dma_cache_size >> 10);
}

Line No.	Rev	Author	Line
1	1624	jcastillo	`/*`
2			`* Deskstation Tyne specific C parts`
3			`*`
4			`* This file is subject to the terms and conditions of the GNU General Public`
5			`* License. See the file "COPYING" in the main directory of this archive`
6			`* for more details.`
7			`*`
8			`* Copyright (C) 1994, 1995 by Ralf Baechle`
9			`*/`
10			`#include <linux/delay.h>`
11			`#include <linux/kernel.h>`
12			`#include <linux/types.h>`
13			`#include <asm/bootinfo.h>`
14			`#include <asm/cachectl.h>`
15			`#include <asm/dma.h>`
16			`#include <asm/io.h>`
17
18			`/*`
19			`* How to access the FDC's registers.`
20			`*/`
21			`unsigned char deskstation_tyne_fd_inb(unsigned int port)`
22			`{`
23			`return inb_p(port);`
24			`}`
25
26			`void deskstation_tyne_fd_outb(unsigned char value, unsigned int port)`
27			`{`
28			`outb_p(value, port);`
29			`}`
30
31			`/*`
32			`* How to access the floppy DMA functions.`
33			`*/`
34			`void deskstation_tyne_fd_enable_dma(void)`
35			`{`
36			`enable_dma(FLOPPY_DMA);`
37			`}`
38
39			`void deskstation_tyne_fd_disable_dma(void)`
40			`{`
41			`disable_dma(FLOPPY_DMA);`
42			`}`
43
44			`int deskstation_tyne_fd_request_dma(void)`
45			`{`
46			`return request_dma(FLOPPY_DMA, "floppy");`
47			`}`
48
49			`void deskstation_tyne_fd_free_dma(void)`
50			`{`
51			`free_dma(FLOPPY_DMA);`
52			`}`
53
54			`void deskstation_tyne_fd_clear_dma_ff(void)`
55			`{`
56			`clear_dma_ff(FLOPPY_DMA);`
57			`}`
58
59			`int deskstation_tyne_fd_set_dma_mode(char mode)`
60			`{`
61			`return set_dma_mode(FLOPPY_DMA, mode);`
62			`}`
63
64			`void deskstation_tyne_fd_set_dma_addr(unsigned int a)`
65			`{`
66			`set_dma_addr(FLOPPY_DMA, addr);`
67			`}`
68
69			`void deskstation_tyne_fd_set_dma_count(unsigned int count)`
70			`{`
71			`set_dma_count(FLOPPY_DMA, count);`
72			`}`
73
74			`int deskstation_tyne_fd_get_dma_residue(void)`
75			`{`
76			`return get_dma_residue(FLOPPY_DMA);`
77			`}`
78
79			`void deskstation_tyne_fd_enable_irq(void)`
80			`{`
81			`enable_irq(FLOPPY_IRQ);`
82			`}`
83
84			`void deskstation_tyne_fd_disable_irq(void)`
85			`{`
86			`disable_irq(FLOPPY_IRQ);`
87			`}`
88
89			`void deskstation_tyne_fd_cacheflush(unsigned char *addr, unsigned int)`
90			`{`
91			`sys_cacheflush((void *)addr, size, DCACHE);`
92			`}`
93
94
95			`/*`
96			`* Tiny Tyne DMA buffer allocator`
97			`*`
98			`* Untested for a long time and changed again and again ...`
99			`* Sorry, but no hardware to test ...`
100			`*/`
101			`static unsigned long allocated;`
102
103			`/*`
104			`* Not very sophisticated, but should suffice for now...`
105			`*/`
106			`unsigned long deskstation_tyne_dma_alloc(size_t size)`
107			`{`
108			`unsigned long ret = allocated;`
109			`allocated += size;`
110			`if (allocated > boot_info.dma_cache_size)`
111			`ret = -1;`
112			`return ret;`
113			`}`
114
115			`void deskstation_tyne_dma_init(void)`
116			`{`
117			`if (boot_info.machtype != MACH_DESKSTATION_TYNE)`
118			`return;`
119			`allocated = 0;`
120			`printk ("Deskstation Tyne DMA (%luk) buffer initialized.\n",`
121			`boot_info.dma_cache_size >> 10);`
122			`}`

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [mips/] [kernel/] [tyne-c.c] - Blame information for rev 1777