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authorThomas Gleixner <tglx@inhelltoy.tec.linutronix.de>2007-10-17 14:24:56 -0400
committerThomas Gleixner <tglx@inhelltoy.tec.linutronix.de>2007-10-17 14:24:56 -0400
commitb515e4767ffd07d1b14f4dc4f328d75f765215ab (patch)
treea2f54256a757a0ca272b59b3751dedbfd202ea60 /include/asm-x86
parent2dc27f01ec3990d79fc97386459191fc3da2b02f (diff)
x86: unify include/asm/floppy_32/64.h
Same file, except for whitespace, comment formatting and: 32-bit: if((unsigned int) addr >= (unsigned int) high_memory) 64-bit: if((unsigned long) addr >= (unsigned long) high_memory) where the latter can be used safely for both. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Conflicts: include/asm-x86/floppy_32.h include/asm-x86/floppy_64.h
Diffstat (limited to 'include/asm-x86')
-rw-r--r--include/asm-x86/floppy.h281
-rw-r--r--include/asm-x86/floppy_32.h280
-rw-r--r--include/asm-x86/floppy_64.h279
3 files changed, 277 insertions, 563 deletions
diff --git a/include/asm-x86/floppy.h b/include/asm-x86/floppy.h
index aecbb6dca21d..a48d7153c097 100644
--- a/include/asm-x86/floppy.h
+++ b/include/asm-x86/floppy.h
@@ -1,5 +1,278 @@
1#ifdef CONFIG_X86_32 1/*
2# include "floppy_32.h" 2 * Architecture specific parts of the Floppy driver
3#else 3 *
4# include "floppy_64.h" 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) 1995
9 */
10#ifndef _ASM_X86_FLOPPY_H
11#define _ASM_X86_FLOPPY_H
12
13#include <linux/vmalloc.h>
14
15/*
16 * The DMA channel used by the floppy controller cannot access data at
17 * addresses >= 16MB
18 *
19 * Went back to the 1MB limit, as some people had problems with the floppy
20 * driver otherwise. It doesn't matter much for performance anyway, as most
21 * floppy accesses go through the track buffer.
22 */
23#define _CROSS_64KB(a,s,vdma) \
24(!(vdma) && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
25
26#define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)
27
28
29#define SW fd_routine[use_virtual_dma&1]
30#define CSW fd_routine[can_use_virtual_dma & 1]
31
32
33#define fd_inb(port) inb_p(port)
34#define fd_outb(value,port) outb_p(value,port)
35
36#define fd_request_dma() CSW._request_dma(FLOPPY_DMA,"floppy")
37#define fd_free_dma() CSW._free_dma(FLOPPY_DMA)
38#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
39#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
40#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
41#define fd_get_dma_residue() SW._get_dma_residue(FLOPPY_DMA)
42#define fd_dma_mem_alloc(size) SW._dma_mem_alloc(size)
43#define fd_dma_setup(addr, size, mode, io) SW._dma_setup(addr, size, mode, io)
44
45#define FLOPPY_CAN_FALLBACK_ON_NODMA
46
47static int virtual_dma_count;
48static int virtual_dma_residue;
49static char *virtual_dma_addr;
50static int virtual_dma_mode;
51static int doing_pdma;
52
53static irqreturn_t floppy_hardint(int irq, void *dev_id)
54{
55 register unsigned char st;
56
57#undef TRACE_FLPY_INT
58
59#ifdef TRACE_FLPY_INT
60 static int calls=0;
61 static int bytes=0;
62 static int dma_wait=0;
5#endif 63#endif
64 if (!doing_pdma)
65 return floppy_interrupt(irq, dev_id);
66
67#ifdef TRACE_FLPY_INT
68 if(!calls)
69 bytes = virtual_dma_count;
70#endif
71
72 {
73 register int lcount;
74 register char *lptr;
75
76 st = 1;
77 for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
78 lcount; lcount--, lptr++) {
79 st=inb(virtual_dma_port+4) & 0xa0 ;
80 if(st != 0xa0)
81 break;
82 if(virtual_dma_mode)
83 outb_p(*lptr, virtual_dma_port+5);
84 else
85 *lptr = inb_p(virtual_dma_port+5);
86 }
87 virtual_dma_count = lcount;
88 virtual_dma_addr = lptr;
89 st = inb(virtual_dma_port+4);
90 }
91
92#ifdef TRACE_FLPY_INT
93 calls++;
94#endif
95 if(st == 0x20)
96 return IRQ_HANDLED;
97 if(!(st & 0x20)) {
98 virtual_dma_residue += virtual_dma_count;
99 virtual_dma_count=0;
100#ifdef TRACE_FLPY_INT
101 printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n",
102 virtual_dma_count, virtual_dma_residue, calls, bytes,
103 dma_wait);
104 calls = 0;
105 dma_wait=0;
106#endif
107 doing_pdma = 0;
108 floppy_interrupt(irq, dev_id);
109 return IRQ_HANDLED;
110 }
111#ifdef TRACE_FLPY_INT
112 if(!virtual_dma_count)
113 dma_wait++;
114#endif
115 return IRQ_HANDLED;
116}
117
118static void fd_disable_dma(void)
119{
120 if(! (can_use_virtual_dma & 1))
121 disable_dma(FLOPPY_DMA);
122 doing_pdma = 0;
123 virtual_dma_residue += virtual_dma_count;
124 virtual_dma_count=0;
125}
126
127static int vdma_request_dma(unsigned int dmanr, const char * device_id)
128{
129 return 0;
130}
131
132static void vdma_nop(unsigned int dummy)
133{
134}
135
136
137static int vdma_get_dma_residue(unsigned int dummy)
138{
139 return virtual_dma_count + virtual_dma_residue;
140}
141
142
143static int fd_request_irq(void)
144{
145 if(can_use_virtual_dma)
146 return request_irq(FLOPPY_IRQ, floppy_hardint,
147 IRQF_DISABLED, "floppy", NULL);
148 else
149 return request_irq(FLOPPY_IRQ, floppy_interrupt,
150 IRQF_DISABLED, "floppy", NULL);
151}
152
153static unsigned long dma_mem_alloc(unsigned long size)
154{
155 return __get_dma_pages(GFP_KERNEL|__GFP_NORETRY,get_order(size));
156}
157
158
159static unsigned long vdma_mem_alloc(unsigned long size)
160{
161 return (unsigned long) vmalloc(size);
162
163}
164
165#define nodma_mem_alloc(size) vdma_mem_alloc(size)
166
167static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
168{
169 if((unsigned long) addr >= (unsigned long) high_memory)
170 vfree((void *)addr);
171 else
172 free_pages(addr, get_order(size));
173}
174
175#define fd_dma_mem_free(addr, size) _fd_dma_mem_free(addr, size)
176
177static void _fd_chose_dma_mode(char *addr, unsigned long size)
178{
179 if(can_use_virtual_dma == 2) {
180 if((unsigned long) addr >= (unsigned long) high_memory ||
181 isa_virt_to_bus(addr) >= 0x1000000 ||
182 _CROSS_64KB(addr, size, 0))
183 use_virtual_dma = 1;
184 else
185 use_virtual_dma = 0;
186 } else {
187 use_virtual_dma = can_use_virtual_dma & 1;
188 }
189}
190
191#define fd_chose_dma_mode(addr, size) _fd_chose_dma_mode(addr, size)
192
193
194static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
195{
196 doing_pdma = 1;
197 virtual_dma_port = io;
198 virtual_dma_mode = (mode == DMA_MODE_WRITE);
199 virtual_dma_addr = addr;
200 virtual_dma_count = size;
201 virtual_dma_residue = 0;
202 return 0;
203}
204
205static int hard_dma_setup(char *addr, unsigned long size, int mode, int io)
206{
207#ifdef FLOPPY_SANITY_CHECK
208 if (CROSS_64KB(addr, size)) {
209 printk("DMA crossing 64-K boundary %p-%p\n", addr, addr+size);
210 return -1;
211 }
212#endif
213 /* actual, physical DMA */
214 doing_pdma = 0;
215 clear_dma_ff(FLOPPY_DMA);
216 set_dma_mode(FLOPPY_DMA,mode);
217 set_dma_addr(FLOPPY_DMA,isa_virt_to_bus(addr));
218 set_dma_count(FLOPPY_DMA,size);
219 enable_dma(FLOPPY_DMA);
220 return 0;
221}
222
223static struct fd_routine_l {
224 int (*_request_dma)(unsigned int dmanr, const char * device_id);
225 void (*_free_dma)(unsigned int dmanr);
226 int (*_get_dma_residue)(unsigned int dummy);
227 unsigned long (*_dma_mem_alloc) (unsigned long size);
228 int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
229} fd_routine[] = {
230 {
231 request_dma,
232 free_dma,
233 get_dma_residue,
234 dma_mem_alloc,
235 hard_dma_setup
236 },
237 {
238 vdma_request_dma,
239 vdma_nop,
240 vdma_get_dma_residue,
241 vdma_mem_alloc,
242 vdma_dma_setup
243 }
244};
245
246
247static int FDC1 = 0x3f0;
248static int FDC2 = -1;
249
250/*
251 * Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
252 * is needed to prevent corrupted CMOS RAM in case "insmod floppy"
253 * coincides with another rtc CMOS user. Paul G.
254 */
255#define FLOPPY0_TYPE ({ \
256 unsigned long flags; \
257 unsigned char val; \
258 spin_lock_irqsave(&rtc_lock, flags); \
259 val = (CMOS_READ(0x10) >> 4) & 15; \
260 spin_unlock_irqrestore(&rtc_lock, flags); \
261 val; \
262})
263
264#define FLOPPY1_TYPE ({ \
265 unsigned long flags; \
266 unsigned char val; \
267 spin_lock_irqsave(&rtc_lock, flags); \
268 val = CMOS_READ(0x10) & 15; \
269 spin_unlock_irqrestore(&rtc_lock, flags); \
270 val; \
271})
272
273#define N_FDC 2
274#define N_DRIVE 8
275
276#define EXTRA_FLOPPY_PARAMS
277
278#endif /* _ASM_X86_FLOPPY_H */
diff --git a/include/asm-x86/floppy_32.h b/include/asm-x86/floppy_32.h
deleted file mode 100644
index cca9be7f6c81..000000000000
--- a/include/asm-x86/floppy_32.h
+++ /dev/null
@@ -1,280 +0,0 @@
1/*
2 * Architecture specific parts of the Floppy driver
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) 1995
9 */
10#ifndef __ASM_I386_FLOPPY_H
11#define __ASM_I386_FLOPPY_H
12
13#include <linux/vmalloc.h>
14
15
16/*
17 * The DMA channel used by the floppy controller cannot access data at
18 * addresses >= 16MB
19 *
20 * Went back to the 1MB limit, as some people had problems with the floppy
21 * driver otherwise. It doesn't matter much for performance anyway, as most
22 * floppy accesses go through the track buffer.
23 */
24#define _CROSS_64KB(a,s,vdma) \
25(!(vdma) && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
26
27#define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)
28
29
30#define SW fd_routine[use_virtual_dma&1]
31#define CSW fd_routine[can_use_virtual_dma & 1]
32
33
34#define fd_inb(port) inb_p(port)
35#define fd_outb(value,port) outb_p(value,port)
36
37#define fd_request_dma() CSW._request_dma(FLOPPY_DMA,"floppy")
38#define fd_free_dma() CSW._free_dma(FLOPPY_DMA)
39#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
40#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
41#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
42#define fd_get_dma_residue() SW._get_dma_residue(FLOPPY_DMA)
43#define fd_dma_mem_alloc(size) SW._dma_mem_alloc(size)
44#define fd_dma_setup(addr, size, mode, io) SW._dma_setup(addr, size, mode, io)
45
46#define FLOPPY_CAN_FALLBACK_ON_NODMA
47
48static int virtual_dma_count;
49static int virtual_dma_residue;
50static char *virtual_dma_addr;
51static int virtual_dma_mode;
52static int doing_pdma;
53
54static irqreturn_t floppy_hardint(int irq, void *dev_id)
55{
56 register unsigned char st;
57
58#undef TRACE_FLPY_INT
59
60#ifdef TRACE_FLPY_INT
61 static int calls=0;
62 static int bytes=0;
63 static int dma_wait=0;
64#endif
65 if (!doing_pdma)
66 return floppy_interrupt(irq, dev_id);
67
68#ifdef TRACE_FLPY_INT
69 if(!calls)
70 bytes = virtual_dma_count;
71#endif
72
73 {
74 register int lcount;
75 register char *lptr;
76
77 st = 1;
78 for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
79 lcount; lcount--, lptr++) {
80 st=inb(virtual_dma_port+4) & 0xa0 ;
81 if(st != 0xa0)
82 break;
83 if(virtual_dma_mode)
84 outb_p(*lptr, virtual_dma_port+5);
85 else
86 *lptr = inb_p(virtual_dma_port+5);
87 }
88 virtual_dma_count = lcount;
89 virtual_dma_addr = lptr;
90 st = inb(virtual_dma_port+4);
91 }
92
93#ifdef TRACE_FLPY_INT
94 calls++;
95#endif
96 if(st == 0x20)
97 return IRQ_HANDLED;
98 if(!(st & 0x20)) {
99 virtual_dma_residue += virtual_dma_count;
100 virtual_dma_count=0;
101#ifdef TRACE_FLPY_INT
102 printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n",
103 virtual_dma_count, virtual_dma_residue, calls, bytes,
104 dma_wait);
105 calls = 0;
106 dma_wait=0;
107#endif
108 doing_pdma = 0;
109 floppy_interrupt(irq, dev_id);
110 return IRQ_HANDLED;
111 }
112#ifdef TRACE_FLPY_INT
113 if(!virtual_dma_count)
114 dma_wait++;
115#endif
116 return IRQ_HANDLED;
117}
118
119static void fd_disable_dma(void)
120{
121 if(! (can_use_virtual_dma & 1))
122 disable_dma(FLOPPY_DMA);
123 doing_pdma = 0;
124 virtual_dma_residue += virtual_dma_count;
125 virtual_dma_count=0;
126}
127
128static int vdma_request_dma(unsigned int dmanr, const char * device_id)
129{
130 return 0;
131}
132
133static void vdma_nop(unsigned int dummy)
134{
135}
136
137
138static int vdma_get_dma_residue(unsigned int dummy)
139{
140 return virtual_dma_count + virtual_dma_residue;
141}
142
143
144static int fd_request_irq(void)
145{
146 if(can_use_virtual_dma)
147 return request_irq(FLOPPY_IRQ, floppy_hardint,
148 IRQF_DISABLED, "floppy", NULL);
149 else
150 return request_irq(FLOPPY_IRQ, floppy_interrupt,
151 IRQF_DISABLED, "floppy", NULL);
152
153}
154
155static unsigned long dma_mem_alloc(unsigned long size)
156{
157 return __get_dma_pages(GFP_KERNEL | __GFP_NORETRY, get_order(size));
158}
159
160
161static unsigned long vdma_mem_alloc(unsigned long size)
162{
163 return (unsigned long) vmalloc(size);
164
165}
166
167#define nodma_mem_alloc(size) vdma_mem_alloc(size)
168
169static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
170{
171 if((unsigned int) addr >= (unsigned int) high_memory)
172 vfree((void *)addr);
173 else
174 free_pages(addr, get_order(size));
175}
176
177#define fd_dma_mem_free(addr, size) _fd_dma_mem_free(addr, size)
178
179static void _fd_chose_dma_mode(char *addr, unsigned long size)
180{
181 if(can_use_virtual_dma == 2) {
182 if((unsigned int) addr >= (unsigned int) high_memory ||
183 isa_virt_to_bus(addr) >= 0x1000000 ||
184 _CROSS_64KB(addr, size, 0))
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 /* actual, physical DMA */
216 doing_pdma = 0;
217 clear_dma_ff(FLOPPY_DMA);
218 set_dma_mode(FLOPPY_DMA,mode);
219 set_dma_addr(FLOPPY_DMA,isa_virt_to_bus(addr));
220 set_dma_count(FLOPPY_DMA,size);
221 enable_dma(FLOPPY_DMA);
222 return 0;
223}
224
225static struct fd_routine_l {
226 int (*_request_dma)(unsigned int dmanr, const char * device_id);
227 void (*_free_dma)(unsigned int dmanr);
228 int (*_get_dma_residue)(unsigned int dummy);
229 unsigned long (*_dma_mem_alloc) (unsigned long size);
230 int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
231} fd_routine[] = {
232 {
233 request_dma,
234 free_dma,
235 get_dma_residue,
236 dma_mem_alloc,
237 hard_dma_setup
238 },
239 {
240 vdma_request_dma,
241 vdma_nop,
242 vdma_get_dma_residue,
243 vdma_mem_alloc,
244 vdma_dma_setup
245 }
246};
247
248
249static int FDC1 = 0x3f0;
250static int FDC2 = -1;
251
252/*
253 * Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
254 * is needed to prevent corrupted CMOS RAM in case "insmod floppy"
255 * coincides with another rtc CMOS user. Paul G.
256 */
257#define FLOPPY0_TYPE ({ \
258 unsigned long flags; \
259 unsigned char val; \
260 spin_lock_irqsave(&rtc_lock, flags); \
261 val = (CMOS_READ(0x10) >> 4) & 15; \
262 spin_unlock_irqrestore(&rtc_lock, flags); \
263 val; \
264})
265
266#define FLOPPY1_TYPE ({ \
267 unsigned long flags; \
268 unsigned char val; \
269 spin_lock_irqsave(&rtc_lock, flags); \
270 val = CMOS_READ(0x10) & 15; \
271 spin_unlock_irqrestore(&rtc_lock, flags); \
272 val; \
273})
274
275#define N_FDC 2
276#define N_DRIVE 8
277
278#define EXTRA_FLOPPY_PARAMS
279
280#endif /* __ASM_I386_FLOPPY_H */
diff --git a/include/asm-x86/floppy_64.h b/include/asm-x86/floppy_64.h
deleted file mode 100644
index d993380dcb47..000000000000
--- a/include/asm-x86/floppy_64.h
+++ /dev/null
@@ -1,279 +0,0 @@
1/*
2 * Architecture specific parts of the Floppy driver
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) 1995
9 */
10#ifndef __ASM_X86_64_FLOPPY_H
11#define __ASM_X86_64_FLOPPY_H
12
13#include <linux/vmalloc.h>
14
15
16/*
17 * The DMA channel used by the floppy controller cannot access data at
18 * addresses >= 16MB
19 *
20 * Went back to the 1MB limit, as some people had problems with the floppy
21 * driver otherwise. It doesn't matter much for performance anyway, as most
22 * floppy accesses go through the track buffer.
23 */
24#define _CROSS_64KB(a,s,vdma) \
25(!(vdma) && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
26
27#define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)
28
29
30#define SW fd_routine[use_virtual_dma&1]
31#define CSW fd_routine[can_use_virtual_dma & 1]
32
33
34#define fd_inb(port) inb_p(port)
35#define fd_outb(value,port) outb_p(value,port)
36
37#define fd_request_dma() CSW._request_dma(FLOPPY_DMA,"floppy")
38#define fd_free_dma() CSW._free_dma(FLOPPY_DMA)
39#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
40#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
41#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL)
42#define fd_get_dma_residue() SW._get_dma_residue(FLOPPY_DMA)
43#define fd_dma_mem_alloc(size) SW._dma_mem_alloc(size)
44#define fd_dma_setup(addr, size, mode, io) SW._dma_setup(addr, size, mode, io)
45
46#define FLOPPY_CAN_FALLBACK_ON_NODMA
47
48static int virtual_dma_count;
49static int virtual_dma_residue;
50static char *virtual_dma_addr;
51static int virtual_dma_mode;
52static int doing_pdma;
53
54static irqreturn_t floppy_hardint(int irq, void *dev_id)
55{
56 register unsigned char st;
57
58#undef TRACE_FLPY_INT
59
60#ifdef TRACE_FLPY_INT
61 static int calls=0;
62 static int bytes=0;
63 static int dma_wait=0;
64#endif
65 if (!doing_pdma)
66 return floppy_interrupt(irq, dev_id);
67
68#ifdef TRACE_FLPY_INT
69 if(!calls)
70 bytes = virtual_dma_count;
71#endif
72
73 {
74 register int lcount;
75 register char *lptr;
76
77 st = 1;
78 for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
79 lcount; lcount--, lptr++) {
80 st=inb(virtual_dma_port+4) & 0xa0 ;
81 if(st != 0xa0)
82 break;
83 if(virtual_dma_mode)
84 outb_p(*lptr, virtual_dma_port+5);
85 else
86 *lptr = inb_p(virtual_dma_port+5);
87 }
88 virtual_dma_count = lcount;
89 virtual_dma_addr = lptr;
90 st = inb(virtual_dma_port+4);
91 }
92
93#ifdef TRACE_FLPY_INT
94 calls++;
95#endif
96 if(st == 0x20)
97 return IRQ_HANDLED;
98 if(!(st & 0x20)) {
99 virtual_dma_residue += virtual_dma_count;
100 virtual_dma_count=0;
101#ifdef TRACE_FLPY_INT
102 printk("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n",
103 virtual_dma_count, virtual_dma_residue, calls, bytes,
104 dma_wait);
105 calls = 0;
106 dma_wait=0;
107#endif
108 doing_pdma = 0;
109 floppy_interrupt(irq, dev_id);
110 return IRQ_HANDLED;
111 }
112#ifdef TRACE_FLPY_INT
113 if(!virtual_dma_count)
114 dma_wait++;
115#endif
116 return IRQ_HANDLED;
117}
118
119static void fd_disable_dma(void)
120{
121 if(! (can_use_virtual_dma & 1))
122 disable_dma(FLOPPY_DMA);
123 doing_pdma = 0;
124 virtual_dma_residue += virtual_dma_count;
125 virtual_dma_count=0;
126}
127
128static int vdma_request_dma(unsigned int dmanr, const char * device_id)
129{
130 return 0;
131}
132
133static void vdma_nop(unsigned int dummy)
134{
135}
136
137
138static int vdma_get_dma_residue(unsigned int dummy)
139{
140 return virtual_dma_count + virtual_dma_residue;
141}
142
143
144static int fd_request_irq(void)
145{
146 if(can_use_virtual_dma)
147 return request_irq(FLOPPY_IRQ, floppy_hardint,
148 IRQF_DISABLED, "floppy", NULL);
149 else
150 return request_irq(FLOPPY_IRQ, floppy_interrupt,
151 IRQF_DISABLED, "floppy", NULL);
152}
153
154static unsigned long dma_mem_alloc(unsigned long size)
155{
156 return __get_dma_pages(GFP_KERNEL|__GFP_NORETRY,get_order(size));
157}
158
159
160static unsigned long vdma_mem_alloc(unsigned long size)
161{
162 return (unsigned long) vmalloc(size);
163
164}
165
166#define nodma_mem_alloc(size) vdma_mem_alloc(size)
167
168static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
169{
170 if((unsigned long) addr >= (unsigned long) high_memory)
171 vfree((void *)addr);
172 else
173 free_pages(addr, get_order(size));
174}
175
176#define fd_dma_mem_free(addr, size) _fd_dma_mem_free(addr, size)
177
178static void _fd_chose_dma_mode(char *addr, unsigned long size)
179{
180 if(can_use_virtual_dma == 2) {
181 if((unsigned long) addr >= (unsigned long) high_memory ||
182 isa_virt_to_bus(addr) >= 0x1000000 ||
183 _CROSS_64KB(addr, size, 0))
184 use_virtual_dma = 1;
185 else
186 use_virtual_dma = 0;
187 } else {
188 use_virtual_dma = can_use_virtual_dma & 1;
189 }
190}
191
192#define fd_chose_dma_mode(addr, size) _fd_chose_dma_mode(addr, size)
193
194
195static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
196{
197 doing_pdma = 1;
198 virtual_dma_port = io;
199 virtual_dma_mode = (mode == DMA_MODE_WRITE);
200 virtual_dma_addr = addr;
201 virtual_dma_count = size;
202 virtual_dma_residue = 0;
203 return 0;
204}
205
206static int hard_dma_setup(char *addr, unsigned long size, int mode, int io)
207{
208#ifdef FLOPPY_SANITY_CHECK
209 if (CROSS_64KB(addr, size)) {
210 printk("DMA crossing 64-K boundary %p-%p\n", addr, addr+size);
211 return -1;
212 }
213#endif
214 /* actual, physical DMA */
215 doing_pdma = 0;
216 clear_dma_ff(FLOPPY_DMA);
217 set_dma_mode(FLOPPY_DMA,mode);
218 set_dma_addr(FLOPPY_DMA,isa_virt_to_bus(addr));
219 set_dma_count(FLOPPY_DMA,size);
220 enable_dma(FLOPPY_DMA);
221 return 0;
222}
223
224static struct fd_routine_l {
225 int (*_request_dma)(unsigned int dmanr, const char * device_id);
226 void (*_free_dma)(unsigned int dmanr);
227 int (*_get_dma_residue)(unsigned int dummy);
228 unsigned long (*_dma_mem_alloc) (unsigned long size);
229 int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
230} fd_routine[] = {
231 {
232 request_dma,
233 free_dma,
234 get_dma_residue,
235 dma_mem_alloc,
236 hard_dma_setup
237 },
238 {
239 vdma_request_dma,
240 vdma_nop,
241 vdma_get_dma_residue,
242 vdma_mem_alloc,
243 vdma_dma_setup
244 }
245};
246
247
248static int FDC1 = 0x3f0;
249static int FDC2 = -1;
250
251/*
252 * Floppy types are stored in the rtc's CMOS RAM and so rtc_lock
253 * is needed to prevent corrupted CMOS RAM in case "insmod floppy"
254 * coincides with another rtc CMOS user. Paul G.
255 */
256#define FLOPPY0_TYPE ({ \
257 unsigned long flags; \
258 unsigned char val; \
259 spin_lock_irqsave(&rtc_lock, flags); \
260 val = (CMOS_READ(0x10) >> 4) & 15; \
261 spin_unlock_irqrestore(&rtc_lock, flags); \
262 val; \
263})
264
265#define FLOPPY1_TYPE ({ \
266 unsigned long flags; \
267 unsigned char val; \
268 spin_lock_irqsave(&rtc_lock, flags); \
269 val = CMOS_READ(0x10) & 15; \
270 spin_unlock_irqrestore(&rtc_lock, flags); \
271 val; \
272})
273
274#define N_FDC 2
275#define N_DRIVE 8
276
277#define EXTRA_FLOPPY_PARAMS
278
279#endif /* __ASM_X86_64_FLOPPY_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 11:57:33 -0500