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authorStephen Rothwell <sfr@canb.auug.org.au>2008-08-01 01:20:30 -0400
committerPaul Mackerras <paulus@samba.org>2008-08-03 22:02:00 -0400
commitb8b572e1015f81b4e748417be2629dfe51ab99f9 (patch)
tree7df58667d5ed71d6c8f8f4ce40ca16b6fb776d0b /include/asm-powerpc/floppy.h
parent2b12a4c524812fb3f6ee590a02e65b95c8c32229 (diff)
powerpc: Move include files to arch/powerpc/include/asm
from include/asm-powerpc. This is the result of a mkdir arch/powerpc/include/asm git mv include/asm-powerpc/* arch/powerpc/include/asm Followed by a few documentation/comment fixups and a couple of places where <asm-powepc/...> was being used explicitly. Of the latter only one was outside the arch code and it is a driver only built for powerpc. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/floppy.h')
-rw-r--r--include/asm-powerpc/floppy.h213
1 files changed, 0 insertions, 213 deletions
diff --git a/include/asm-powerpc/floppy.h b/include/asm-powerpc/floppy.h
deleted file mode 100644
index 24bd34c57e9d..000000000000
--- a/include/asm-powerpc/floppy.h
+++ /dev/null
@@ -1,213 +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_POWERPC_FLOPPY_H
11#define __ASM_POWERPC_FLOPPY_H
12#ifdef __KERNEL__
13
14#include <asm/machdep.h>
15
16#define fd_inb(port) inb_p(port)
17#define fd_outb(value,port) outb_p(value,port)
18
19#define fd_enable_dma() enable_dma(FLOPPY_DMA)
20#define fd_disable_dma() fd_ops->_disable_dma(FLOPPY_DMA)
21#define fd_free_dma() fd_ops->_free_dma(FLOPPY_DMA)
22#define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA)
23#define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA, mode)
24#define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA, count)
25#define fd_get_dma_residue() fd_ops->_get_dma_residue(FLOPPY_DMA)
26#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
27#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
28#define fd_cacheflush(addr,size) /* nothing */
29#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL);
30
31#include <linux/pci.h>
32#include <asm/ppc-pci.h> /* for isa_bridge_pcidev */
33
34#define fd_dma_setup(addr,size,mode,io) fd_ops->_dma_setup(addr,size,mode,io)
35
36static int fd_request_dma(void);
37
38struct fd_dma_ops {
39 void (*_disable_dma)(unsigned int dmanr);
40 void (*_free_dma)(unsigned int dmanr);
41 int (*_get_dma_residue)(unsigned int dummy);
42 int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
43};
44
45static int virtual_dma_count;
46static int virtual_dma_residue;
47static char *virtual_dma_addr;
48static int virtual_dma_mode;
49static int doing_vdma;
50static struct fd_dma_ops *fd_ops;
51
52static irqreturn_t floppy_hardint(int irq, void *dev_id)
53{
54 unsigned char st;
55 int lcount;
56 char *lptr;
57
58 if (!doing_vdma)
59 return floppy_interrupt(irq, dev_id);
60
61
62 st = 1;
63 for (lcount=virtual_dma_count, lptr=virtual_dma_addr;
64 lcount; lcount--, lptr++) {
65 st=inb(virtual_dma_port+4) & 0xa0 ;
66 if (st != 0xa0)
67 break;
68 if (virtual_dma_mode)
69 outb_p(*lptr, virtual_dma_port+5);
70 else
71 *lptr = inb_p(virtual_dma_port+5);
72 }
73 virtual_dma_count = lcount;
74 virtual_dma_addr = lptr;
75 st = inb(virtual_dma_port+4);
76
77 if (st == 0x20)
78 return IRQ_HANDLED;
79 if (!(st & 0x20)) {
80 virtual_dma_residue += virtual_dma_count;
81 virtual_dma_count=0;
82 doing_vdma = 0;
83 floppy_interrupt(irq, dev_id);
84 return IRQ_HANDLED;
85 }
86 return IRQ_HANDLED;
87}
88
89static void vdma_disable_dma(unsigned int dummy)
90{
91 doing_vdma = 0;
92 virtual_dma_residue += virtual_dma_count;
93 virtual_dma_count=0;
94}
95
96static void vdma_nop(unsigned int dummy)
97{
98}
99
100
101static int vdma_get_dma_residue(unsigned int dummy)
102{
103 return virtual_dma_count + virtual_dma_residue;
104}
105
106
107static int fd_request_irq(void)
108{
109 if (can_use_virtual_dma)
110 return request_irq(FLOPPY_IRQ, floppy_hardint,
111 IRQF_DISABLED, "floppy", NULL);
112 else
113 return request_irq(FLOPPY_IRQ, floppy_interrupt,
114 IRQF_DISABLED, "floppy", NULL);
115}
116
117static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
118{
119 doing_vdma = 1;
120 virtual_dma_port = io;
121 virtual_dma_mode = (mode == DMA_MODE_WRITE);
122 virtual_dma_addr = addr;
123 virtual_dma_count = size;
124 virtual_dma_residue = 0;
125 return 0;
126}
127
128static int hard_dma_setup(char *addr, unsigned long size, int mode, int io)
129{
130 static unsigned long prev_size;
131 static dma_addr_t bus_addr = 0;
132 static char *prev_addr;
133 static int prev_dir;
134 int dir;
135
136 doing_vdma = 0;
137 dir = (mode == DMA_MODE_READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE;
138
139 if (bus_addr
140 && (addr != prev_addr || size != prev_size || dir != prev_dir)) {
141 /* different from last time -- unmap prev */
142 pci_unmap_single(isa_bridge_pcidev, bus_addr, prev_size, prev_dir);
143 bus_addr = 0;
144 }
145
146 if (!bus_addr) /* need to map it */
147 bus_addr = pci_map_single(isa_bridge_pcidev, addr, size, dir);
148
149 /* remember this one as prev */
150 prev_addr = addr;
151 prev_size = size;
152 prev_dir = dir;
153
154 fd_clear_dma_ff();
155 fd_cacheflush(addr, size);
156 fd_set_dma_mode(mode);
157 set_dma_addr(FLOPPY_DMA, bus_addr);
158 fd_set_dma_count(size);
159 virtual_dma_port = io;
160 fd_enable_dma();
161
162 return 0;
163}
164
165static struct fd_dma_ops real_dma_ops =
166{
167 ._disable_dma = disable_dma,
168 ._free_dma = free_dma,
169 ._get_dma_residue = get_dma_residue,
170 ._dma_setup = hard_dma_setup
171};
172
173static struct fd_dma_ops virt_dma_ops =
174{
175 ._disable_dma = vdma_disable_dma,
176 ._free_dma = vdma_nop,
177 ._get_dma_residue = vdma_get_dma_residue,
178 ._dma_setup = vdma_dma_setup
179};
180
181static int fd_request_dma(void)
182{
183 if (can_use_virtual_dma & 1) {
184 fd_ops = &virt_dma_ops;
185 return 0;
186 }
187 else {
188 fd_ops = &real_dma_ops;
189 return request_dma(FLOPPY_DMA, "floppy");
190 }
191}
192
193static int FDC1 = 0x3f0;
194static int FDC2 = -1;
195
196/*
197 * Again, the CMOS information not available
198 */
199#define FLOPPY0_TYPE 6
200#define FLOPPY1_TYPE 0
201
202#define N_FDC 2 /* Don't change this! */
203#define N_DRIVE 8
204
205/*
206 * The PowerPC has no problems with floppy DMA crossing 64k borders.
207 */
208#define CROSS_64KB(a,s) (0)
209
210#define EXTRA_FLOPPY_PARAMS
211
212#endif /* __KERNEL__ */
213#endif /* __ASM_POWERPC_FLOPPY_H */
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