2 * Copyright 2012 Red Hat Inc.
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5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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24 #include <subdev/vga.h>
26 #include <core/device.h>
29 nv_rdport(void *obj, int head, u16 port)
31 struct nvkm_device *device = nv_device(obj);
33 if (device->card_type >= NV_50)
34 return nv_rd08(obj, 0x601000 + port);
36 if (port == 0x03c0 || port == 0x03c1 || /* AR */
37 port == 0x03c2 || port == 0x03da || /* INP0 */
38 port == 0x03d4 || port == 0x03d5) /* CR */
39 return nv_rd08(obj, 0x601000 + (head * 0x2000) + port);
41 if (port == 0x03c2 || port == 0x03cc || /* MISC */
42 port == 0x03c4 || port == 0x03c5 || /* SR */
43 port == 0x03ce || port == 0x03cf) { /* GR */
44 if (device->card_type < NV_40)
45 head = 0; /* CR44 selects head */
46 return nv_rd08(obj, 0x0c0000 + (head * 0x2000) + port);
49 nv_error(obj, "unknown vga port 0x%04x\n", port);
54 nv_wrport(void *obj, int head, u16 port, u8 data)
56 struct nvkm_device *device = nv_device(obj);
58 if (device->card_type >= NV_50)
59 nv_wr08(obj, 0x601000 + port, data);
61 if (port == 0x03c0 || port == 0x03c1 || /* AR */
62 port == 0x03c2 || port == 0x03da || /* INP0 */
63 port == 0x03d4 || port == 0x03d5) /* CR */
64 nv_wr08(obj, 0x601000 + (head * 0x2000) + port, data);
66 if (port == 0x03c2 || port == 0x03cc || /* MISC */
67 port == 0x03c4 || port == 0x03c5 || /* SR */
68 port == 0x03ce || port == 0x03cf) { /* GR */
69 if (device->card_type < NV_40)
70 head = 0; /* CR44 selects head */
71 nv_wr08(obj, 0x0c0000 + (head * 0x2000) + port, data);
73 nv_error(obj, "unknown vga port 0x%04x\n", port);
77 nv_rdvgas(void *obj, int head, u8 index)
79 nv_wrport(obj, head, 0x03c4, index);
80 return nv_rdport(obj, head, 0x03c5);
84 nv_wrvgas(void *obj, int head, u8 index, u8 value)
86 nv_wrport(obj, head, 0x03c4, index);
87 nv_wrport(obj, head, 0x03c5, value);
91 nv_rdvgag(void *obj, int head, u8 index)
93 nv_wrport(obj, head, 0x03ce, index);
94 return nv_rdport(obj, head, 0x03cf);
98 nv_wrvgag(void *obj, int head, u8 index, u8 value)
100 nv_wrport(obj, head, 0x03ce, index);
101 nv_wrport(obj, head, 0x03cf, value);
105 nv_rdvgac(void *obj, int head, u8 index)
107 nv_wrport(obj, head, 0x03d4, index);
108 return nv_rdport(obj, head, 0x03d5);
112 nv_wrvgac(void *obj, int head, u8 index, u8 value)
114 nv_wrport(obj, head, 0x03d4, index);
115 nv_wrport(obj, head, 0x03d5, value);
119 nv_rdvgai(void *obj, int head, u16 port, u8 index)
121 if (port == 0x03c4) return nv_rdvgas(obj, head, index);
122 if (port == 0x03ce) return nv_rdvgag(obj, head, index);
123 if (port == 0x03d4) return nv_rdvgac(obj, head, index);
124 nv_error(obj, "unknown indexed vga port 0x%04x\n", port);
129 nv_wrvgai(void *obj, int head, u16 port, u8 index, u8 value)
131 if (port == 0x03c4) nv_wrvgas(obj, head, index, value);
132 else if (port == 0x03ce) nv_wrvgag(obj, head, index, value);
133 else if (port == 0x03d4) nv_wrvgac(obj, head, index, value);
134 else nv_error(obj, "unknown indexed vga port 0x%04x\n", port);
138 nv_lockvgac(void *obj, bool lock)
140 struct nvkm_device *dev = nv_device(obj);
142 bool locked = !nv_rdvgac(obj, 0, 0x1f);
143 u8 data = lock ? 0x99 : 0x57;
144 if (dev->card_type < NV_50)
145 nv_wrvgac(obj, 0, 0x1f, data);
147 nv_wrvgac(obj, 0, 0x3f, data);
148 if (dev->chipset == 0x11) {
149 if (!(nv_rd32(obj, 0x001084) & 0x10000000))
150 nv_wrvgac(obj, 1, 0x1f, data);
155 /* CR44 takes values 0 (head A), 3 (head B) and 4 (heads tied)
156 * it affects only the 8 bit vga io regs, which we access using mmio at
157 * 0xc{0,2}3c*, 0x60{1,3}3*, and 0x68{1,3}3d*
158 * in general, the set value of cr44 does not matter: reg access works as
159 * expected and values can be set for the appropriate head by using a 0x2000
162 * a) pre nv40, the head B range of PRMVIO regs at 0xc23c* was not exposed and
163 * cr44 must be set to 0 or 3 for accessing values on the correct head
164 * through the common 0xc03c* addresses
165 * b) in tied mode (4) head B is programmed to the values set on head A, and
166 * access using the head B addresses can have strange results, ergo we leave
167 * tied mode in init once we know to what cr44 should be restored on exit
169 * the owner parameter is slightly abused:
170 * 0 and 1 are treated as head values and so the set value is (owner * 3)
171 * other values are treated as literal values to set
174 nv_rdvgaowner(void *obj)
176 if (nv_device(obj)->card_type < NV_50) {
177 if (nv_device(obj)->chipset == 0x11) {
178 u32 tied = nv_rd32(obj, 0x001084) & 0x10000000;
180 u8 slA = nv_rdvgac(obj, 0, 0x28) & 0x80;
181 u8 tvA = nv_rdvgac(obj, 0, 0x33) & 0x01;
182 u8 slB = nv_rdvgac(obj, 1, 0x28) & 0x80;
183 u8 tvB = nv_rdvgac(obj, 1, 0x33) & 0x01;
184 if (slA && !tvA) return 0x00;
185 if (slB && !tvB) return 0x03;
186 if (slA) return 0x00;
187 if (slB) return 0x03;
193 return nv_rdvgac(obj, 0, 0x44);
196 nv_error(obj, "rdvgaowner after nv4x\n");
201 nv_wrvgaowner(void *obj, u8 select)
203 if (nv_device(obj)->card_type < NV_50) {
204 u8 owner = (select == 1) ? 3 : select;
205 if (nv_device(obj)->chipset == 0x11) {
206 /* workaround hw lockup bug */
207 nv_rdvgac(obj, 0, 0x1f);
208 nv_rdvgac(obj, 1, 0x1f);
211 nv_wrvgac(obj, 0, 0x44, owner);
213 if (nv_device(obj)->chipset == 0x11) {
214 nv_wrvgac(obj, 0, 0x2e, owner);
215 nv_wrvgac(obj, 0, 0x2e, owner);
218 nv_error(obj, "wrvgaowner after nv4x\n");