Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* sbuslib.c: Helper library for SBUS framebuffer drivers. |
2 | * | |
3 | * Copyright (C) 2003 David S. Miller (davem@redhat.com) | |
4 | */ | |
5 | ||
9ffb83bc | 6 | #include <linux/compat.h> |
1da177e4 LT |
7 | #include <linux/kernel.h> |
8 | #include <linux/module.h> | |
9 | #include <linux/string.h> | |
10 | #include <linux/fb.h> | |
11 | #include <linux/mm.h> | |
12 | ||
13 | #include <asm/oplib.h> | |
14 | #include <asm/fbio.h> | |
15 | ||
16 | #include "sbuslib.h" | |
17 | ||
18 | void sbusfb_fill_var(struct fb_var_screeninfo *var, int prom_node, int bpp) | |
19 | { | |
20 | memset(var, 0, sizeof(*var)); | |
21 | ||
22 | var->xres = prom_getintdefault(prom_node, "width", 1152); | |
23 | var->yres = prom_getintdefault(prom_node, "height", 900); | |
24 | var->xres_virtual = var->xres; | |
25 | var->yres_virtual = var->yres; | |
26 | var->bits_per_pixel = bpp; | |
27 | } | |
28 | ||
29 | EXPORT_SYMBOL(sbusfb_fill_var); | |
30 | ||
31 | static unsigned long sbusfb_mmapsize(long size, unsigned long fbsize) | |
32 | { | |
33 | if (size == SBUS_MMAP_EMPTY) return 0; | |
34 | if (size >= 0) return size; | |
35 | return fbsize * (-size); | |
36 | } | |
37 | ||
38 | int sbusfb_mmap_helper(struct sbus_mmap_map *map, | |
39 | unsigned long physbase, | |
40 | unsigned long fbsize, | |
41 | unsigned long iospace, | |
42 | struct vm_area_struct *vma) | |
43 | { | |
44 | unsigned int size, page, r, map_size; | |
45 | unsigned long map_offset = 0; | |
46 | unsigned long off; | |
47 | int i; | |
48 | ||
e445ee65 DM |
49 | if (!(vma->vm_flags & (VM_SHARED | VM_MAYSHARE))) |
50 | return -EINVAL; | |
51 | ||
1da177e4 LT |
52 | size = vma->vm_end - vma->vm_start; |
53 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) | |
54 | return -EINVAL; | |
55 | ||
56 | off = vma->vm_pgoff << PAGE_SHIFT; | |
57 | ||
58 | /* To stop the swapper from even considering these pages */ | |
59 | vma->vm_flags |= (VM_IO | VM_RESERVED); | |
60 | ||
14778d90 DM |
61 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
62 | ||
1da177e4 LT |
63 | /* Each page, see which map applies */ |
64 | for (page = 0; page < size; ){ | |
65 | map_size = 0; | |
66 | for (i = 0; map[i].size; i++) | |
67 | if (map[i].voff == off+page) { | |
68 | map_size = sbusfb_mmapsize(map[i].size, fbsize); | |
69 | #ifdef __sparc_v9__ | |
70 | #define POFF_MASK (PAGE_MASK|0x1UL) | |
71 | #else | |
72 | #define POFF_MASK (PAGE_MASK) | |
73 | #endif | |
74 | map_offset = (physbase + map[i].poff) & POFF_MASK; | |
75 | break; | |
76 | } | |
77 | if (!map_size){ | |
78 | page += PAGE_SIZE; | |
79 | continue; | |
80 | } | |
81 | if (page + map_size > size) | |
82 | map_size = size - page; | |
83 | r = io_remap_pfn_range(vma, | |
84 | vma->vm_start + page, | |
85 | MK_IOSPACE_PFN(iospace, | |
86 | map_offset >> PAGE_SHIFT), | |
87 | map_size, | |
88 | vma->vm_page_prot); | |
89 | if (r) | |
90 | return -EAGAIN; | |
91 | page += map_size; | |
92 | } | |
93 | ||
94 | return 0; | |
95 | } | |
96 | EXPORT_SYMBOL(sbusfb_mmap_helper); | |
97 | ||
98 | int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg, | |
99 | struct fb_info *info, | |
100 | int type, int fb_depth, unsigned long fb_size) | |
101 | { | |
102 | switch(cmd) { | |
103 | case FBIOGTYPE: { | |
104 | struct fbtype __user *f = (struct fbtype __user *) arg; | |
105 | ||
106 | if (put_user(type, &f->fb_type) || | |
107 | __put_user(info->var.yres, &f->fb_height) || | |
108 | __put_user(info->var.xres, &f->fb_width) || | |
109 | __put_user(fb_depth, &f->fb_depth) || | |
110 | __put_user(0, &f->fb_cmsize) || | |
111 | __put_user(fb_size, &f->fb_cmsize)) | |
112 | return -EFAULT; | |
113 | return 0; | |
114 | } | |
115 | case FBIOPUTCMAP_SPARC: { | |
116 | struct fbcmap __user *c = (struct fbcmap __user *) arg; | |
117 | struct fb_cmap cmap; | |
118 | u16 red, green, blue; | |
119 | u8 red8, green8, blue8; | |
120 | unsigned char __user *ured; | |
121 | unsigned char __user *ugreen; | |
122 | unsigned char __user *ublue; | |
123 | int index, count, i; | |
124 | ||
125 | if (get_user(index, &c->index) || | |
126 | __get_user(count, &c->count) || | |
127 | __get_user(ured, &c->red) || | |
128 | __get_user(ugreen, &c->green) || | |
129 | __get_user(ublue, &c->blue)) | |
130 | return -EFAULT; | |
131 | ||
132 | cmap.len = 1; | |
133 | cmap.red = &red; | |
134 | cmap.green = &green; | |
135 | cmap.blue = &blue; | |
136 | cmap.transp = NULL; | |
137 | for (i = 0; i < count; i++) { | |
138 | int err; | |
139 | ||
140 | if (get_user(red8, &ured[i]) || | |
141 | get_user(green8, &ugreen[i]) || | |
142 | get_user(blue8, &ublue[i])) | |
143 | return -EFAULT; | |
144 | ||
145 | red = red8 << 8; | |
146 | green = green8 << 8; | |
147 | blue = blue8 << 8; | |
148 | ||
149 | cmap.start = index + i; | |
150 | err = fb_set_cmap(&cmap, info); | |
151 | if (err) | |
152 | return err; | |
153 | } | |
154 | return 0; | |
155 | } | |
156 | case FBIOGETCMAP_SPARC: { | |
157 | struct fbcmap __user *c = (struct fbcmap __user *) arg; | |
158 | unsigned char __user *ured; | |
159 | unsigned char __user *ugreen; | |
160 | unsigned char __user *ublue; | |
161 | struct fb_cmap *cmap = &info->cmap; | |
162 | int index, count, i; | |
163 | u8 red, green, blue; | |
164 | ||
165 | if (get_user(index, &c->index) || | |
166 | __get_user(count, &c->count) || | |
167 | __get_user(ured, &c->red) || | |
168 | __get_user(ugreen, &c->green) || | |
169 | __get_user(ublue, &c->blue)) | |
170 | return -EFAULT; | |
171 | ||
172 | if (index + count > cmap->len) | |
173 | return -EINVAL; | |
174 | ||
175 | for (i = 0; i < count; i++) { | |
176 | red = cmap->red[index + i] >> 8; | |
177 | green = cmap->green[index + i] >> 8; | |
178 | blue = cmap->blue[index + i] >> 8; | |
179 | if (put_user(red, &ured[i]) || | |
180 | put_user(green, &ugreen[i]) || | |
181 | put_user(blue, &ublue[i])) | |
182 | return -EFAULT; | |
183 | } | |
184 | return 0; | |
185 | } | |
186 | default: | |
187 | return -EINVAL; | |
188 | }; | |
189 | } | |
190 | EXPORT_SYMBOL(sbusfb_ioctl_helper); | |
9ffb83bc CH |
191 | |
192 | #ifdef CONFIG_COMPAT | |
193 | struct fbcmap32 { | |
194 | int index; /* first element (0 origin) */ | |
195 | int count; | |
196 | u32 red; | |
197 | u32 green; | |
198 | u32 blue; | |
199 | }; | |
200 | ||
201 | #define FBIOPUTCMAP32 _IOW('F', 3, struct fbcmap32) | |
202 | #define FBIOGETCMAP32 _IOW('F', 4, struct fbcmap32) | |
203 | ||
c7006638 | 204 | static int fbiogetputcmap(struct fb_info *info, unsigned int cmd, unsigned long arg) |
9ffb83bc CH |
205 | { |
206 | struct fbcmap32 __user *argp = (void __user *)arg; | |
207 | struct fbcmap __user *p = compat_alloc_user_space(sizeof(*p)); | |
208 | u32 addr; | |
209 | int ret; | |
210 | ||
211 | ret = copy_in_user(p, argp, 2 * sizeof(int)); | |
212 | ret |= get_user(addr, &argp->red); | |
213 | ret |= put_user(compat_ptr(addr), &p->red); | |
214 | ret |= get_user(addr, &argp->green); | |
215 | ret |= put_user(compat_ptr(addr), &p->green); | |
216 | ret |= get_user(addr, &argp->blue); | |
217 | ret |= put_user(compat_ptr(addr), &p->blue); | |
218 | if (ret) | |
219 | return -EFAULT; | |
5ebdce72 | 220 | return info->fbops->fb_ioctl(info, |
9ffb83bc CH |
221 | (cmd == FBIOPUTCMAP32) ? |
222 | FBIOPUTCMAP_SPARC : FBIOGETCMAP_SPARC, | |
5ebdce72 | 223 | (unsigned long)p); |
9ffb83bc CH |
224 | } |
225 | ||
226 | struct fbcursor32 { | |
227 | short set; /* what to set, choose from the list above */ | |
228 | short enable; /* cursor on/off */ | |
229 | struct fbcurpos pos; /* cursor position */ | |
230 | struct fbcurpos hot; /* cursor hot spot */ | |
231 | struct fbcmap32 cmap; /* color map info */ | |
232 | struct fbcurpos size; /* cursor bit map size */ | |
233 | u32 image; /* cursor image bits */ | |
234 | u32 mask; /* cursor mask bits */ | |
235 | }; | |
236 | ||
237 | #define FBIOSCURSOR32 _IOW('F', 24, struct fbcursor32) | |
238 | #define FBIOGCURSOR32 _IOW('F', 25, struct fbcursor32) | |
239 | ||
c7006638 | 240 | static int fbiogscursor(struct fb_info *info, unsigned long arg) |
9ffb83bc CH |
241 | { |
242 | struct fbcursor __user *p = compat_alloc_user_space(sizeof(*p)); | |
243 | struct fbcursor32 __user *argp = (void __user *)arg; | |
244 | compat_uptr_t addr; | |
245 | int ret; | |
246 | ||
247 | ret = copy_in_user(p, argp, | |
248 | 2 * sizeof (short) + 2 * sizeof(struct fbcurpos)); | |
249 | ret |= copy_in_user(&p->size, &argp->size, sizeof(struct fbcurpos)); | |
250 | ret |= copy_in_user(&p->cmap, &argp->cmap, 2 * sizeof(int)); | |
251 | ret |= get_user(addr, &argp->cmap.red); | |
252 | ret |= put_user(compat_ptr(addr), &p->cmap.red); | |
253 | ret |= get_user(addr, &argp->cmap.green); | |
254 | ret |= put_user(compat_ptr(addr), &p->cmap.green); | |
255 | ret |= get_user(addr, &argp->cmap.blue); | |
256 | ret |= put_user(compat_ptr(addr), &p->cmap.blue); | |
257 | ret |= get_user(addr, &argp->mask); | |
258 | ret |= put_user(compat_ptr(addr), &p->mask); | |
259 | ret |= get_user(addr, &argp->image); | |
260 | ret |= put_user(compat_ptr(addr), &p->image); | |
261 | if (ret) | |
262 | return -EFAULT; | |
5ebdce72 | 263 | return info->fbops->fb_ioctl(info, FBIOSCURSOR, (unsigned long)p); |
9ffb83bc CH |
264 | } |
265 | ||
c7006638 | 266 | int sbusfb_compat_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
9ffb83bc CH |
267 | { |
268 | switch (cmd) { | |
269 | case FBIOGTYPE: | |
270 | case FBIOSATTR: | |
271 | case FBIOGATTR: | |
272 | case FBIOSVIDEO: | |
273 | case FBIOGVIDEO: | |
274 | case FBIOGCURSOR32: /* This is not implemented yet. | |
275 | Later it should be converted... */ | |
276 | case FBIOSCURPOS: | |
277 | case FBIOGCURPOS: | |
278 | case FBIOGCURMAX: | |
5ebdce72 | 279 | return info->fbops->fb_ioctl(info, cmd, arg); |
9ffb83bc | 280 | case FBIOPUTCMAP32: |
5ebdce72 | 281 | return fbiogetputcmap(info, cmd, arg); |
9ffb83bc | 282 | case FBIOGETCMAP32: |
5ebdce72 | 283 | return fbiogetputcmap(info, cmd, arg); |
9ffb83bc | 284 | case FBIOSCURSOR32: |
5ebdce72 | 285 | return fbiogscursor(info, arg); |
9ffb83bc CH |
286 | default: |
287 | return -ENOIOCTLCMD; | |
288 | } | |
289 | } | |
290 | EXPORT_SYMBOL(sbusfb_compat_ioctl); | |
291 | #endif |