]>
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> | |
631a9dca | 12 | #include <linux/uaccess.h> |
6cd5a86b | 13 | #include <linux/of_device.h> |
1da177e4 | 14 | |
1da177e4 LT |
15 | #include <asm/fbio.h> |
16 | ||
17 | #include "sbuslib.h" | |
18 | ||
6cd5a86b RR |
19 | void sbusfb_fill_var(struct fb_var_screeninfo *var, struct device_node *dp, |
20 | int bpp) | |
1da177e4 LT |
21 | { |
22 | memset(var, 0, sizeof(*var)); | |
23 | ||
6cd5a86b RR |
24 | var->xres = of_getintprop_default(dp, "width", 1152); |
25 | var->yres = of_getintprop_default(dp, "height", 900); | |
1da177e4 LT |
26 | var->xres_virtual = var->xres; |
27 | var->yres_virtual = var->yres; | |
28 | var->bits_per_pixel = bpp; | |
29 | } | |
30 | ||
31 | EXPORT_SYMBOL(sbusfb_fill_var); | |
32 | ||
33 | static unsigned long sbusfb_mmapsize(long size, unsigned long fbsize) | |
34 | { | |
35 | if (size == SBUS_MMAP_EMPTY) return 0; | |
36 | if (size >= 0) return size; | |
37 | return fbsize * (-size); | |
38 | } | |
39 | ||
40 | int sbusfb_mmap_helper(struct sbus_mmap_map *map, | |
41 | unsigned long physbase, | |
42 | unsigned long fbsize, | |
43 | unsigned long iospace, | |
44 | struct vm_area_struct *vma) | |
45 | { | |
46 | unsigned int size, page, r, map_size; | |
47 | unsigned long map_offset = 0; | |
48 | unsigned long off; | |
49 | int i; | |
50 | ||
e445ee65 DM |
51 | if (!(vma->vm_flags & (VM_SHARED | VM_MAYSHARE))) |
52 | return -EINVAL; | |
53 | ||
1da177e4 LT |
54 | size = vma->vm_end - vma->vm_start; |
55 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) | |
56 | return -EINVAL; | |
57 | ||
58 | off = vma->vm_pgoff << PAGE_SHIFT; | |
59 | ||
314e51b9 KK |
60 | /* VM_IO | VM_DONTEXPAND | VM_DONTDUMP are set by remap_pfn_range() */ |
61 | ||
14778d90 DM |
62 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
63 | ||
1da177e4 LT |
64 | /* Each page, see which map applies */ |
65 | for (page = 0; page < size; ){ | |
66 | map_size = 0; | |
67 | for (i = 0; map[i].size; i++) | |
68 | if (map[i].voff == off+page) { | |
69 | map_size = sbusfb_mmapsize(map[i].size, fbsize); | |
70 | #ifdef __sparc_v9__ | |
71 | #define POFF_MASK (PAGE_MASK|0x1UL) | |
72 | #else | |
73 | #define POFF_MASK (PAGE_MASK) | |
74 | #endif | |
75 | map_offset = (physbase + map[i].poff) & POFF_MASK; | |
76 | break; | |
77 | } | |
2dfd7cf6 | 78 | if (!map_size) { |
1da177e4 LT |
79 | page += PAGE_SIZE; |
80 | continue; | |
81 | } | |
82 | if (page + map_size > size) | |
83 | map_size = size - page; | |
84 | r = io_remap_pfn_range(vma, | |
85 | vma->vm_start + page, | |
86 | MK_IOSPACE_PFN(iospace, | |
87 | map_offset >> PAGE_SHIFT), | |
88 | map_size, | |
89 | vma->vm_page_prot); | |
90 | if (r) | |
91 | return -EAGAIN; | |
92 | page += map_size; | |
93 | } | |
94 | ||
95 | return 0; | |
96 | } | |
97 | EXPORT_SYMBOL(sbusfb_mmap_helper); | |
98 | ||
99 | int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg, | |
100 | struct fb_info *info, | |
101 | int type, int fb_depth, unsigned long fb_size) | |
102 | { | |
103 | switch(cmd) { | |
104 | case FBIOGTYPE: { | |
105 | struct fbtype __user *f = (struct fbtype __user *) arg; | |
106 | ||
107 | if (put_user(type, &f->fb_type) || | |
108 | __put_user(info->var.yres, &f->fb_height) || | |
109 | __put_user(info->var.xres, &f->fb_width) || | |
110 | __put_user(fb_depth, &f->fb_depth) || | |
111 | __put_user(0, &f->fb_cmsize) || | |
112 | __put_user(fb_size, &f->fb_cmsize)) | |
113 | return -EFAULT; | |
114 | return 0; | |
115 | } | |
116 | case FBIOPUTCMAP_SPARC: { | |
117 | struct fbcmap __user *c = (struct fbcmap __user *) arg; | |
118 | struct fb_cmap cmap; | |
119 | u16 red, green, blue; | |
120 | u8 red8, green8, blue8; | |
121 | unsigned char __user *ured; | |
122 | unsigned char __user *ugreen; | |
123 | unsigned char __user *ublue; | |
124 | int index, count, i; | |
125 | ||
126 | if (get_user(index, &c->index) || | |
127 | __get_user(count, &c->count) || | |
128 | __get_user(ured, &c->red) || | |
129 | __get_user(ugreen, &c->green) || | |
130 | __get_user(ublue, &c->blue)) | |
131 | return -EFAULT; | |
132 | ||
133 | cmap.len = 1; | |
134 | cmap.red = &red; | |
135 | cmap.green = &green; | |
136 | cmap.blue = &blue; | |
137 | cmap.transp = NULL; | |
138 | for (i = 0; i < count; i++) { | |
139 | int err; | |
140 | ||
141 | if (get_user(red8, &ured[i]) || | |
142 | get_user(green8, &ugreen[i]) || | |
143 | get_user(blue8, &ublue[i])) | |
144 | return -EFAULT; | |
145 | ||
146 | red = red8 << 8; | |
147 | green = green8 << 8; | |
148 | blue = blue8 << 8; | |
149 | ||
150 | cmap.start = index + i; | |
151 | err = fb_set_cmap(&cmap, info); | |
152 | if (err) | |
153 | return err; | |
154 | } | |
155 | return 0; | |
156 | } | |
157 | case FBIOGETCMAP_SPARC: { | |
158 | struct fbcmap __user *c = (struct fbcmap __user *) arg; | |
159 | unsigned char __user *ured; | |
160 | unsigned char __user *ugreen; | |
161 | unsigned char __user *ublue; | |
162 | struct fb_cmap *cmap = &info->cmap; | |
163 | int index, count, i; | |
164 | u8 red, green, blue; | |
165 | ||
166 | if (get_user(index, &c->index) || | |
167 | __get_user(count, &c->count) || | |
168 | __get_user(ured, &c->red) || | |
169 | __get_user(ugreen, &c->green) || | |
170 | __get_user(ublue, &c->blue)) | |
171 | return -EFAULT; | |
172 | ||
173 | if (index + count > cmap->len) | |
174 | return -EINVAL; | |
175 | ||
176 | for (i = 0; i < count; i++) { | |
177 | red = cmap->red[index + i] >> 8; | |
178 | green = cmap->green[index + i] >> 8; | |
179 | blue = cmap->blue[index + i] >> 8; | |
180 | if (put_user(red, &ured[i]) || | |
181 | put_user(green, &ugreen[i]) || | |
182 | put_user(blue, &ublue[i])) | |
183 | return -EFAULT; | |
184 | } | |
185 | return 0; | |
186 | } | |
187 | default: | |
188 | return -EINVAL; | |
cf6ac4ce | 189 | } |
1da177e4 LT |
190 | } |
191 | EXPORT_SYMBOL(sbusfb_ioctl_helper); | |
9ffb83bc CH |
192 | |
193 | #ifdef CONFIG_COMPAT | |
c7006638 | 194 | static int fbiogetputcmap(struct fb_info *info, unsigned int cmd, unsigned long arg) |
9ffb83bc CH |
195 | { |
196 | struct fbcmap32 __user *argp = (void __user *)arg; | |
197 | struct fbcmap __user *p = compat_alloc_user_space(sizeof(*p)); | |
198 | u32 addr; | |
199 | int ret; | |
200 | ||
201 | ret = copy_in_user(p, argp, 2 * sizeof(int)); | |
202 | ret |= get_user(addr, &argp->red); | |
203 | ret |= put_user(compat_ptr(addr), &p->red); | |
204 | ret |= get_user(addr, &argp->green); | |
205 | ret |= put_user(compat_ptr(addr), &p->green); | |
206 | ret |= get_user(addr, &argp->blue); | |
207 | ret |= put_user(compat_ptr(addr), &p->blue); | |
208 | if (ret) | |
209 | return -EFAULT; | |
5ebdce72 | 210 | return info->fbops->fb_ioctl(info, |
9ffb83bc CH |
211 | (cmd == FBIOPUTCMAP32) ? |
212 | FBIOPUTCMAP_SPARC : FBIOGETCMAP_SPARC, | |
5ebdce72 | 213 | (unsigned long)p); |
9ffb83bc CH |
214 | } |
215 | ||
c7006638 | 216 | static int fbiogscursor(struct fb_info *info, unsigned long arg) |
9ffb83bc CH |
217 | { |
218 | struct fbcursor __user *p = compat_alloc_user_space(sizeof(*p)); | |
219 | struct fbcursor32 __user *argp = (void __user *)arg; | |
220 | compat_uptr_t addr; | |
221 | int ret; | |
222 | ||
223 | ret = copy_in_user(p, argp, | |
224 | 2 * sizeof (short) + 2 * sizeof(struct fbcurpos)); | |
225 | ret |= copy_in_user(&p->size, &argp->size, sizeof(struct fbcurpos)); | |
226 | ret |= copy_in_user(&p->cmap, &argp->cmap, 2 * sizeof(int)); | |
227 | ret |= get_user(addr, &argp->cmap.red); | |
228 | ret |= put_user(compat_ptr(addr), &p->cmap.red); | |
229 | ret |= get_user(addr, &argp->cmap.green); | |
230 | ret |= put_user(compat_ptr(addr), &p->cmap.green); | |
231 | ret |= get_user(addr, &argp->cmap.blue); | |
232 | ret |= put_user(compat_ptr(addr), &p->cmap.blue); | |
233 | ret |= get_user(addr, &argp->mask); | |
234 | ret |= put_user(compat_ptr(addr), &p->mask); | |
235 | ret |= get_user(addr, &argp->image); | |
236 | ret |= put_user(compat_ptr(addr), &p->image); | |
237 | if (ret) | |
238 | return -EFAULT; | |
5ebdce72 | 239 | return info->fbops->fb_ioctl(info, FBIOSCURSOR, (unsigned long)p); |
9ffb83bc CH |
240 | } |
241 | ||
c7006638 | 242 | int sbusfb_compat_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
9ffb83bc CH |
243 | { |
244 | switch (cmd) { | |
245 | case FBIOGTYPE: | |
246 | case FBIOSATTR: | |
247 | case FBIOGATTR: | |
248 | case FBIOSVIDEO: | |
249 | case FBIOGVIDEO: | |
250 | case FBIOGCURSOR32: /* This is not implemented yet. | |
251 | Later it should be converted... */ | |
252 | case FBIOSCURPOS: | |
253 | case FBIOGCURPOS: | |
254 | case FBIOGCURMAX: | |
5ebdce72 | 255 | return info->fbops->fb_ioctl(info, cmd, arg); |
9ffb83bc | 256 | case FBIOPUTCMAP32: |
5ebdce72 | 257 | return fbiogetputcmap(info, cmd, arg); |
9ffb83bc | 258 | case FBIOGETCMAP32: |
5ebdce72 | 259 | return fbiogetputcmap(info, cmd, arg); |
9ffb83bc | 260 | case FBIOSCURSOR32: |
5ebdce72 | 261 | return fbiogscursor(info, arg); |
9ffb83bc CH |
262 | default: |
263 | return -ENOIOCTLCMD; | |
264 | } | |
265 | } | |
266 | EXPORT_SYMBOL(sbusfb_compat_ioctl); | |
267 | #endif |