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-rw-r--r--include/asm-sh/floppy.h268
1 files changed, 0 insertions, 268 deletions
diff --git a/include/asm-sh/floppy.h b/include/asm-sh/floppy.h
deleted file mode 100644
index 59fbfdc90dfb..000000000000
--- a/include/asm-sh/floppy.h
+++ /dev/null
@@ -1,268 +0,0 @@
1/*
2 * Architecture specific parts of the Floppy driver
3 * include/asm-i386/floppy.h
4 *
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 *
9 * Copyright (C) 1995
10 */
11#ifndef __ASM_SH_FLOPPY_H
12#define __ASM_SH_FLOPPY_H
13
14#include <linux/vmalloc.h>
15
16
17/*
18 * The DMA channel used by the floppy controller cannot access data at
19 * addresses >= 16MB
20 *
21 * Went back to the 1MB limit, as some people had problems with the floppy
22 * driver otherwise. It doesn't matter much for performance anyway, as most
23 * floppy accesses go through the track buffer.
24 */
25#define _CROSS_64KB(a,s,vdma) \
26(!vdma && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
27
28#define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)
29
30
31#define SW fd_routine[use_virtual_dma&1]
32#define CSW fd_routine[can_use_virtual_dma & 1]
33
34
35#define fd_inb(port) inb_p(port)
36#define fd_outb(value,port) outb_p(value,port)
37
38#define fd_request_dma() CSW._request_dma(FLOPPY_DMA,"floppy")
39#define fd_free_dma() CSW._free_dma(FLOPPY_DMA)
40#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
41#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
42#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
43#define fd_get_dma_residue() SW._get_dma_residue(FLOPPY_DMA)
44#define fd_dma_mem_alloc(size) SW._dma_mem_alloc(size)
45#define fd_dma_setup(addr, size, mode, io) SW._dma_setup(addr, size, mode, io)
46
47#define FLOPPY_CAN_FALLBACK_ON_NODMA
48
49static int virtual_dma_count;
50static int virtual_dma_residue;
51static char *virtual_dma_addr;
52static int virtual_dma_mode;
53static int doing_pdma;
54
55static void floppy_hardint(int irq, void *dev_id, struct pt_regs * regs)
56{
57 register unsigned char st;
58
59#undef TRACE_FLPY_INT
60
61#ifdef TRACE_FLPY_INT
62 static int calls=0;
63 static int bytes=0;
64 static int dma_wait=0;
65#endif
66 if(!doing_pdma) {
67 floppy_interrupt(irq, dev_id, regs);
68 return;
69 }
70
71#ifdef TRACE_FLPY_INT
72 if(!calls)
73 bytes = virtual_dma_count;
74#endif
75
76 {
77 register int lcount;
78 register char *lptr;
79
80 st = 1;
81 for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
82 lcount; lcount--, lptr++) {
83 st=inb(virtual_dma_port+4) & 0xa0 ;
84 if(st != 0xa0)
85 break;
86 if(virtual_dma_mode)
87 outb_p(*lptr, virtual_dma_port+5);
88 else
89 *lptr = inb_p(virtual_dma_port+5);
90 }
91 virtual_dma_count = lcount;
92 virtual_dma_addr = lptr;
93 st = inb(virtual_dma_port+4);
94 }
95
96#ifdef TRACE_FLPY_INT
97 calls++;
98#endif
99 if(st == 0x20)
100 return;
101 if(!(st & 0x20)) {
102 virtual_dma_residue += virtual_dma_count;
103 virtual_dma_count=0;
104#ifdef TRACE_FLPY_INT
105 printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n",
106 virtual_dma_count, virtual_dma_residue, calls, bytes,
107 dma_wait);
108 calls = 0;
109 dma_wait=0;
110#endif
111 doing_pdma = 0;
112 floppy_interrupt(irq, dev_id, regs);
113 return;
114 }
115#ifdef TRACE_FLPY_INT
116 if(!virtual_dma_count)
117 dma_wait++;
118#endif
119}
120
121static void fd_disable_dma(void)
122{
123 if(! (can_use_virtual_dma & 1))
124 disable_dma(FLOPPY_DMA);
125 doing_pdma = 0;
126 virtual_dma_residue += virtual_dma_count;
127 virtual_dma_count=0;
128}
129
130static int vdma_request_dma(unsigned int dmanr, const char * device_id)
131{
132 return 0;
133}
134
135static void vdma_nop(unsigned int dummy)
136{
137}
138
139
140static int vdma_get_dma_residue(unsigned int dummy)
141{
142 return virtual_dma_count + virtual_dma_residue;
143}
144
145
146static int fd_request_irq(void)
147{
148 if(can_use_virtual_dma)
149 return request_irq(FLOPPY_IRQ, floppy_hardint,
150 IRQF_DISABLED, "floppy", NULL);
151 else
152 return request_irq(FLOPPY_IRQ, floppy_interrupt,
153 IRQF_DISABLED, "floppy", NULL);
154}
155
156static unsigned long dma_mem_alloc(unsigned long size)
157{
158 return __get_dma_pages(GFP_KERNEL,get_order(size));
159}
160
161
162static unsigned long vdma_mem_alloc(unsigned long size)
163{
164 return (unsigned long) vmalloc(size);
165
166}
167
168#define nodma_mem_alloc(size) vdma_mem_alloc(size)
169
170static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
171{
172 if((unsigned int) addr >= (unsigned int) high_memory)
173 return vfree((void *)addr);
174 else
175 free_pages(addr, get_order(size));
176}
177
178#define fd_dma_mem_free(addr, size) _fd_dma_mem_free(addr, size)
179
180static void _fd_chose_dma_mode(char *addr, unsigned long size)
181{
182 if(can_use_virtual_dma == 2) {
183 if((unsigned int) addr >= (unsigned int) high_memory ||
184 virt_to_phys(addr) >= 0x10000000)
185 use_virtual_dma = 1;
186 else
187 use_virtual_dma = 0;
188 } else {
189 use_virtual_dma = can_use_virtual_dma & 1;
190 }
191}
192
193#define fd_chose_dma_mode(addr, size) _fd_chose_dma_mode(addr, size)
194
195
196static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
197{
198 doing_pdma = 1;
199 virtual_dma_port = io;
200 virtual_dma_mode = (mode == DMA_MODE_WRITE);
201 virtual_dma_addr = addr;
202 virtual_dma_count = size;
203 virtual_dma_residue = 0;
204 return 0;
205}
206
207static int hard_dma_setup(char *addr, unsigned long size, int mode, int io)
208{
209#ifdef FLOPPY_SANITY_CHECK
210 if (CROSS_64KB(addr, size)) {
211 printk("DMA crossing 64-K boundary %p-%p\n", addr, addr+size);
212 return -1;
213 }
214#endif
215
216 __flush_purge_region(addr, size);
217
218 /* actual, physical DMA */
219 doing_pdma = 0;
220 clear_dma_ff(FLOPPY_DMA);
221 set_dma_mode(FLOPPY_DMA,mode);
222 set_dma_addr(FLOPPY_DMA,virt_to_phys(addr));
223 set_dma_count(FLOPPY_DMA,size);
224 enable_dma(FLOPPY_DMA);
225 return 0;
226}
227
228static struct fd_routine_l {
229 int (*_request_dma)(unsigned int dmanr, const char * device_id);
230 void (*_free_dma)(unsigned int dmanr);
231 int (*_get_dma_residue)(unsigned int dummy);
232 unsigned long (*_dma_mem_alloc) (unsigned long size);
233 int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
234} fd_routine[] = {
235 {
236 request_dma,
237 free_dma,
238 get_dma_residue,
239 dma_mem_alloc,
240 hard_dma_setup
241 },
242 {
243 vdma_request_dma,
244 vdma_nop,
245 vdma_get_dma_residue,
246 vdma_mem_alloc,
247 vdma_dma_setup
248 }
249};
250
251
252static int FDC1 = 0x3f0;
253static int FDC2 = -1;
254
255/*
256 * Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
257 * is needed to prevent corrupted CMOS RAM in case "insmod floppy"
258 * coincides with another rtc CMOS user. Paul G.
259 */
260#define FLOPPY0_TYPE (4)
261#define FLOPPY1_TYPE (0)
262
263#define N_FDC 2
264#define N_DRIVE 8
265
266#define EXTRA_FLOPPY_PARAMS
267
268#endif /* __ASM_SH_FLOPPY_H */
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