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mm: fix exec activate_mm vs TLB shootdown and lazy tlb switching race
[linux/fpc-iii.git] / arch / x86 / kernel / sysfb_efi.c
blob897da526e40e66027a34b9657c73aea3bdf78c51
1 /*
2 * Generic System Framebuffers on x86
3 * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@gmail.com>
4 *
5 * EFI Quirks Copyright (c) 2006 Edgar Hucek <gimli@dark-green.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
10 * any later version.
11 */
12
13 /*
14 * EFI Quirks
15 * Several EFI systems do not correctly advertise their boot framebuffers.
16 * Hence, we use this static table of known broken machines and fix up the
17 * information so framebuffer drivers can load corectly.
18 */
19
20 #include <linux/dmi.h>
21 #include <linux/err.h>
22 #include <linux/init.h>
23 #include <linux/kernel.h>
24 #include <linux/mm.h>
25 #include <linux/pci.h>
26 #include <linux/screen_info.h>
27 #include <video/vga.h>
28 #include <asm/sysfb.h>
29
30 enum {
31 OVERRIDE_NONE = 0x0,
32 OVERRIDE_BASE = 0x1,
33 OVERRIDE_STRIDE = 0x2,
34 OVERRIDE_HEIGHT = 0x4,
35 OVERRIDE_WIDTH = 0x8,
36 };
37
38 struct efifb_dmi_info efifb_dmi_list[] = {
39 [M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE },
40 [M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, /* guess */
41 [M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE },
42 [M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, /* guess */
43 [M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE },
44 [M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080, OVERRIDE_NONE },
45 [M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440, OVERRIDE_NONE },
46 [M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768, OVERRIDE_NONE },
47 [M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768, OVERRIDE_NONE },
48 [M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE },
49 [M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE },
50 [M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE },
51 [M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE },
52 [M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE },
53 [M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE },
54 /* 11" Macbook Air 3,1 passes the wrong stride */
55 [M_MBA_3] = { "mba3", 0, 2048 * 4, 0, 0, OVERRIDE_STRIDE },
56 [M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE },
57 [M_MBP_2] = { "mbp2", 0, 0, 0, 0, OVERRIDE_NONE }, /* placeholder */
58 [M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE },
59 [M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900, OVERRIDE_NONE },
60 [M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE },
61 [M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE },
62 [M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE },
63 [M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE },
64 [M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200, OVERRIDE_NONE },
65 [M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050, OVERRIDE_NONE },
66 [M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800, OVERRIDE_NONE },
67 [M_MBP_8_2] = { "mbp82", 0x90010000, 1472 * 4, 1440, 900, OVERRIDE_NONE },
68 [M_UNKNOWN] = { NULL, 0, 0, 0, 0, OVERRIDE_NONE }
69 };
70
71 void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
72 {
73 int i;
74
75 for (i = 0; i < M_UNKNOWN; i++) {
76 if (efifb_dmi_list[i].base != 0 &&
77 !strcmp(opt, efifb_dmi_list[i].optname)) {
78 si->lfb_base = efifb_dmi_list[i].base;
79 si->lfb_linelength = efifb_dmi_list[i].stride;
80 si->lfb_width = efifb_dmi_list[i].width;
81 si->lfb_height = efifb_dmi_list[i].height;
82 }
83 }
84 }
85
86 #define choose_value(dmivalue, fwvalue, field, flags) ({ \
87 typeof(fwvalue) _ret_ = fwvalue; \
88 if ((flags) & (field)) \
89 _ret_ = dmivalue; \
90 else if ((fwvalue) == 0) \
91 _ret_ = dmivalue; \
92 _ret_; \
93 })
94
95 static int __init efifb_set_system(const struct dmi_system_id *id)
96 {
97 struct efifb_dmi_info *info = id->driver_data;
98
99 if (info->base == 0 && info->height == 0 && info->width == 0 &&
100 info->stride == 0)
101 return 0;
102
103 /* Trust the bootloader over the DMI tables */
104 if (screen_info.lfb_base == 0) {
105 #if defined(CONFIG_PCI)
106 struct pci_dev *dev = NULL;
107 int found_bar = 0;
108 #endif
109 if (info->base) {
110 screen_info.lfb_base = choose_value(info->base,
111 screen_info.lfb_base, OVERRIDE_BASE,
112 info->flags);
113
114 #if defined(CONFIG_PCI)
115 /* make sure that the address in the table is actually
116 * on a VGA device's PCI BAR */
117
118 for_each_pci_dev(dev) {
119 int i;
120 if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
121 continue;
122 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
123 resource_size_t start, end;
124 unsigned long flags;
125
126 flags = pci_resource_flags(dev, i);
127 if (!(flags & IORESOURCE_MEM))
128 continue;
129
130 if (flags & IORESOURCE_UNSET)
131 continue;
132
133 if (pci_resource_len(dev, i) == 0)
134 continue;
135
136 start = pci_resource_start(dev, i);
137 end = pci_resource_end(dev, i);
138 if (screen_info.lfb_base >= start &&
139 screen_info.lfb_base < end) {
140 found_bar = 1;
141 break;
142 }
143 }
144 }
145 if (!found_bar)
146 screen_info.lfb_base = 0;
147 #endif
148 }
149 }
150 if (screen_info.lfb_base) {
151 screen_info.lfb_linelength = choose_value(info->stride,
152 screen_info.lfb_linelength, OVERRIDE_STRIDE,
153 info->flags);
154 screen_info.lfb_width = choose_value(info->width,
155 screen_info.lfb_width, OVERRIDE_WIDTH,
156 info->flags);
157 screen_info.lfb_height = choose_value(info->height,
158 screen_info.lfb_height, OVERRIDE_HEIGHT,
159 info->flags);
160 if (screen_info.orig_video_isVGA == 0)
161 screen_info.orig_video_isVGA = VIDEO_TYPE_EFI;
162 } else {
163 screen_info.lfb_linelength = 0;
164 screen_info.lfb_width = 0;
165 screen_info.lfb_height = 0;
166 screen_info.orig_video_isVGA = 0;
167 return 0;
168 }
169
170 printk(KERN_INFO "efifb: dmi detected %s - framebuffer at 0x%08x "
171 "(%dx%d, stride %d)\n", id->ident,
172 screen_info.lfb_base, screen_info.lfb_width,
173 screen_info.lfb_height, screen_info.lfb_linelength);
174
175 return 1;
176 }
177
178 #define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \
179 { \
180 efifb_set_system, \
181 name, \
182 { \
183 DMI_MATCH(DMI_BIOS_VENDOR, vendor), \
184 DMI_MATCH(DMI_PRODUCT_NAME, name) \
185 }, \
186 &efifb_dmi_list[enumid] \
187 }
188
189 static const struct dmi_system_id efifb_dmi_system_table[] __initconst = {
190 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17),
191 /* At least one of these two will be right; maybe both? */
192 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20),
193 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20),
194 /* At least one of these two will be right; maybe both? */
195 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24),
196 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24),
197 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR),
198 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1),
199 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1),
200 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1),
201 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI),
202 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1),
203 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1),
204 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB),
205 /* At least one of these two will be right; maybe both? */
206 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB),
207 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB),
208 /* At least one of these two will be right; maybe both? */
209 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB),
210 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB),
211 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB),
212 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1),
213 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1),
214 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1),
215 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA),
216 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir3,1", M_MBA_3),
217 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP),
218 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2),
219 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2),
220 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2),
221 EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR),
222 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR),
223 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4),
224 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1),
225 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2),
226 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3),
227 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1),
228 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2),
229 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1),
230 EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro8,2", M_MBP_8_2),
231 {},
232 };
233
234 /*
235 * Some devices have a portrait LCD but advertise a landscape resolution (and
236 * pitch). We simply swap width and height for these devices so that we can
237 * correctly deal with some of them coming with multiple resolutions.
238 */
239 static const struct dmi_system_id efifb_dmi_swap_width_height[] __initconst = {
240 {
241 /*
242 * Lenovo MIIX310-10ICR, only some batches have the troublesome
243 * 800x1280 portrait screen. Luckily the portrait version has
244 * its own BIOS version, so we match on that.
245 */
246 .matches = {
247 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
248 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
249 DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1HCN44WW"),
250 },
251 },
252 {
253 /* Lenovo MIIX 320-10ICR with 800x1280 portrait screen */
254 .matches = {
255 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
256 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
257 "Lenovo MIIX 320-10ICR"),
258 },
259 },
260 {
261 /* Lenovo D330 with 800x1280 or 1200x1920 portrait screen */
262 .matches = {
263 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
264 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION,
265 "Lenovo ideapad D330-10IGM"),
266 },
267 },
268 {},
269 };
270
271 __init void sysfb_apply_efi_quirks(void)
272 {
273 if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI ||
274 !(screen_info.capabilities & VIDEO_CAPABILITY_SKIP_QUIRKS))
275 dmi_check_system(efifb_dmi_system_table);
276
277 if (screen_info.orig_video_isVGA == VIDEO_TYPE_EFI &&
278 dmi_check_system(efifb_dmi_swap_width_height)) {
279 u16 temp = screen_info.lfb_width;
280
281 screen_info.lfb_width = screen_info.lfb_height;
282 screen_info.lfb_height = temp;
283 screen_info.lfb_linelength = 4 * screen_info.lfb_width;
284 }
285 }
Linux with added FPC-III support