2 * Copyright 2013 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
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
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include <core/device.h>
27 #include <subdev/bios.h>
28 #include <subdev/bios/bit.h>
29 #include <subdev/bios/init.h>
30 #include <subdev/bios/pll.h>
31 #include <subdev/clk/pll.h>
32 #include <subdev/timer.h>
35 nv40_ram_calc(struct nvkm_fb *pfb, u32 freq)
37 struct nvkm_bios *bios = nvkm_bios(pfb);
38 struct nv40_ram *ram = (void *)pfb->ram;
39 struct nvbios_pll pll;
43 ret = nvbios_pll_parse(bios, 0x04, &pll);
45 nv_error(pfb, "mclk pll data not found\n");
49 ret = nv04_pll_calc(nv_subdev(pfb), &pll, freq,
50 &N1, &M1, &N2, &M2, &log2P);
54 ram->ctrl = 0x80000000 | (log2P << 16);
55 ram->ctrl |= min(pll.bias_p + log2P, (int)pll.max_p) << 20;
57 ram->ctrl |= 0x00000100;
58 ram->coef = (N1 << 8) | M1;
60 ram->ctrl |= 0x40000000;
61 ram->coef = (N2 << 24) | (M2 << 16) | (N1 << 8) | M1;
68 nv40_ram_prog(struct nvkm_fb *pfb)
70 struct nvkm_bios *bios = nvkm_bios(pfb);
71 struct nv40_ram *ram = (void *)pfb->ram;
77 /* determine which CRTCs are active, fetch VGA_SR1 for each */
78 for (i = 0; i < 2; i++) {
79 u32 vbl = nv_rd32(pfb, 0x600808 + (i * 0x2000));
82 if (vbl != nv_rd32(pfb, 0x600808 + (i * 0x2000))) {
83 nv_wr08(pfb, 0x0c03c4 + (i * 0x2000), 0x01);
84 sr1[i] = nv_rd08(pfb, 0x0c03c5 + (i * 0x2000));
86 crtc_mask |= (1 << i);
93 /* wait for vblank start on active crtcs, disable memory access */
94 for (i = 0; i < 2; i++) {
95 if (!(crtc_mask & (1 << i)))
97 nv_wait(pfb, 0x600808 + (i * 0x2000), 0x00010000, 0x00000000);
98 nv_wait(pfb, 0x600808 + (i * 0x2000), 0x00010000, 0x00010000);
99 nv_wr08(pfb, 0x0c03c4 + (i * 0x2000), 0x01);
100 nv_wr08(pfb, 0x0c03c5 + (i * 0x2000), sr1[i] | 0x20);
103 /* prepare ram for reclocking */
104 nv_wr32(pfb, 0x1002d4, 0x00000001); /* precharge */
105 nv_wr32(pfb, 0x1002d0, 0x00000001); /* refresh */
106 nv_wr32(pfb, 0x1002d0, 0x00000001); /* refresh */
107 nv_mask(pfb, 0x100210, 0x80000000, 0x00000000); /* no auto refresh */
108 nv_wr32(pfb, 0x1002dc, 0x00000001); /* enable self-refresh */
110 /* change the PLL of each memory partition */
111 nv_mask(pfb, 0x00c040, 0x0000c000, 0x00000000);
112 switch (nv_device(pfb)->chipset) {
118 nv_mask(pfb, 0x004044, 0xc0771100, ram->ctrl);
119 nv_mask(pfb, 0x00402c, 0xc0771100, ram->ctrl);
120 nv_wr32(pfb, 0x004048, ram->coef);
121 nv_wr32(pfb, 0x004030, ram->coef);
125 nv_mask(pfb, 0x004038, 0xc0771100, ram->ctrl);
126 nv_wr32(pfb, 0x00403c, ram->coef);
128 nv_mask(pfb, 0x004020, 0xc0771100, ram->ctrl);
129 nv_wr32(pfb, 0x004024, ram->coef);
133 nv_mask(pfb, 0x00c040, 0x0000c000, 0x0000c000);
135 /* re-enable normal operation of memory controller */
136 nv_wr32(pfb, 0x1002dc, 0x00000000);
137 nv_mask(pfb, 0x100210, 0x80000000, 0x80000000);
140 /* execute memory reset script from vbios */
141 if (!bit_entry(bios, 'M', &M)) {
142 struct nvbios_init init = {
143 .subdev = nv_subdev(pfb),
145 .offset = nv_ro16(bios, M.offset + 0x00),
152 /* make sure we're in vblank (hopefully the same one as before), and
153 * then re-enable crtc memory access
155 for (i = 0; i < 2; i++) {
156 if (!(crtc_mask & (1 << i)))
158 nv_wait(pfb, 0x600808 + (i * 0x2000), 0x00010000, 0x00010000);
159 nv_wr08(pfb, 0x0c03c4 + (i * 0x2000), 0x01);
160 nv_wr08(pfb, 0x0c03c5 + (i * 0x2000), sr1[i]);
167 nv40_ram_tidy(struct nvkm_fb *pfb)
172 nv40_ram_create(struct nvkm_object *parent, struct nvkm_object *engine,
173 struct nvkm_oclass *oclass, void *data, u32 size,
174 struct nvkm_object **pobject)
176 struct nvkm_fb *pfb = nvkm_fb(parent);
177 struct nv40_ram *ram;
178 u32 pbus1218 = nv_rd32(pfb, 0x001218);
181 ret = nvkm_ram_create(parent, engine, oclass, &ram);
182 *pobject = nv_object(ram);
186 switch (pbus1218 & 0x00000300) {
187 case 0x00000000: ram->base.type = NV_MEM_TYPE_SDRAM; break;
188 case 0x00000100: ram->base.type = NV_MEM_TYPE_DDR1; break;
189 case 0x00000200: ram->base.type = NV_MEM_TYPE_GDDR3; break;
190 case 0x00000300: ram->base.type = NV_MEM_TYPE_DDR2; break;
193 ram->base.size = nv_rd32(pfb, 0x10020c) & 0xff000000;
194 ram->base.parts = (nv_rd32(pfb, 0x100200) & 0x00000003) + 1;
195 ram->base.tags = nv_rd32(pfb, 0x100320);
196 ram->base.calc = nv40_ram_calc;
197 ram->base.prog = nv40_ram_prog;
198 ram->base.tidy = nv40_ram_tidy;
206 .ofuncs = &(struct nvkm_ofuncs) {
207 .ctor = nv40_ram_create,
208 .dtor = _nvkm_ram_dtor,
209 .init = _nvkm_ram_init,
210 .fini = _nvkm_ram_fini,