mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
drm/nouveau: import initial work on vbios performance table parsing
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
parent
4709bff02a
commit
330c5988ee
7 changed files with 678 additions and 0 deletions
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@ -10,6 +10,7 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \
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nouveau_hw.o nouveau_calc.o nouveau_bios.o nouveau_i2c.o \
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nouveau_display.o nouveau_connector.o nouveau_fbcon.o \
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nouveau_dp.o nouveau_ramht.o \
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nouveau_pm.o nouveau_volt.o nouveau_perf.o \
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nv04_timer.o \
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nv04_mc.o nv40_mc.o nv50_mc.o \
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nv04_fb.o nv10_fb.o nv30_fb.o nv40_fb.o nv50_fb.o nvc0_fb.o \
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@ -359,6 +359,51 @@ struct nouveau_gpio_engine {
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void (*irq_enable)(struct drm_device *, enum dcb_gpio_tag, bool on);
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};
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struct nouveau_pm_voltage_level {
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u8 voltage;
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u8 vid;
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};
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struct nouveau_pm_voltage {
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bool supported;
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u8 vid_mask;
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struct nouveau_pm_voltage_level *level;
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int nr_level;
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};
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#define NOUVEAU_PM_MAX_LEVEL 8
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struct nouveau_pm_level {
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struct device_attribute dev_attr;
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char name[32];
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int id;
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u32 core;
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u32 memory;
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u32 shader;
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u32 unk05;
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u8 voltage;
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u8 fanspeed;
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};
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struct nouveau_pm_engine {
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struct nouveau_pm_voltage voltage;
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struct nouveau_pm_level perflvl[NOUVEAU_PM_MAX_LEVEL];
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int nr_perflvl;
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struct nouveau_pm_level boot;
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struct nouveau_pm_level *cur;
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int (*clock_get)(struct drm_device *, u32 id);
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void *(*clock_pre)(struct drm_device *, u32 id, int khz);
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void (*clock_set)(struct drm_device *, void *);
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int (*voltage_get)(struct drm_device *);
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int (*voltage_set)(struct drm_device *, int voltage);
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int (*fanspeed_get)(struct drm_device *);
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int (*fanspeed_set)(struct drm_device *, int fanspeed);
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};
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struct nouveau_engine {
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struct nouveau_instmem_engine instmem;
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struct nouveau_mc_engine mc;
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@ -368,6 +413,7 @@ struct nouveau_engine {
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struct nouveau_fifo_engine fifo;
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struct nouveau_display_engine display;
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struct nouveau_gpio_engine gpio;
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struct nouveau_pm_engine pm;
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};
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struct nouveau_pll_vals {
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159
drivers/gpu/drm/nouveau/nouveau_perf.c
Normal file
159
drivers/gpu/drm/nouveau/nouveau_perf.c
Normal file
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@ -0,0 +1,159 @@
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/*
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* Copyright 2010 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "drmP.h"
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#include "nouveau_drv.h"
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#include "nouveau_pm.h"
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void
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nouveau_perf_init(struct drm_device *dev)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nvbios *bios = &dev_priv->vbios;
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struct bit_entry P;
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u8 version, headerlen, recordlen, entries;
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u8 *perf, *entry;
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int vid, i;
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if (bios->type == NVBIOS_BIT) {
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if (bit_table(dev, 'P', &P))
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return;
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if (P.version != 1 && P.version != 2) {
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NV_WARN(dev, "unknown perf for BIT P %d\n", P.version);
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return;
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}
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perf = ROMPTR(bios, P.data[0]);
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version = perf[0];
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headerlen = perf[1];
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if (version < 0x40) {
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recordlen = perf[3] + (perf[4] * perf[5]);
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entries = perf[2];
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} else {
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recordlen = perf[2] + (perf[3] * perf[4]);
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entries = perf[5];
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}
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} else {
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if (bios->data[bios->offset + 6] < 0x27) {
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NV_DEBUG(dev, "BMP version too old for perf\n");
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return;
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}
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perf = ROMPTR(bios, bios->data[bios->offset + 0x94]);
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if (!perf) {
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NV_DEBUG(dev, "perf table pointer invalid\n");
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return;
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}
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version = perf[1];
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headerlen = perf[0];
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recordlen = perf[3];
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entries = perf[2];
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}
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entry = perf + headerlen;
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for (i = 0; i < entries; i++) {
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struct nouveau_pm_level *perflvl = &pm->perflvl[pm->nr_perflvl];
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if (entry[0] == 0xff) {
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entry += recordlen;
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continue;
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}
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switch (version) {
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case 0x12:
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case 0x13:
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case 0x15:
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perflvl->fanspeed = entry[55];
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perflvl->voltage = entry[56];
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perflvl->core = ROM32(entry[1]) / 100;
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perflvl->memory = ROM32(entry[5]) / 100;
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break;
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case 0x21:
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case 0x23:
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case 0x24:
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perflvl->fanspeed = entry[4];
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perflvl->voltage = entry[5];
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perflvl->core = ROM16(entry[6]);
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perflvl->memory = ROM16(entry[11]);
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break;
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case 0x25:
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perflvl->fanspeed = entry[4];
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perflvl->voltage = entry[5];
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perflvl->core = ROM16(entry[6]);
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perflvl->shader = ROM16(entry[10]);
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perflvl->memory = ROM16(entry[12]);
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break;
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case 0x30:
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case 0x35:
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perflvl->fanspeed = entry[6];
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perflvl->voltage = entry[7];
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perflvl->core = ROM16(entry[8]);
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perflvl->shader = ROM16(entry[10]);
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perflvl->memory = ROM16(entry[12]);
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/*XXX: confirm on 0x35 */
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perflvl->unk05 = ROM16(entry[16]);
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break;
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case 0x40:
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#define subent(n) entry[perf[2] + ((n) * perf[3])]
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perflvl->fanspeed = 0; /*XXX*/
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perflvl->voltage = 0; /*XXX: entry[2] */;
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perflvl->core = ROM16(subent(0)) & 0xfff;
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perflvl->shader = ROM16(subent(1)) & 0xfff;
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perflvl->memory = ROM16(subent(2)) & 0xfff;
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break;
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}
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/* convert MHz -> KHz, it's more convenient */
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perflvl->core *= 1000;
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perflvl->memory *= 1000;
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perflvl->shader *= 1000;
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perflvl->unk05 *= 1000;
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/* make sure vid is valid */
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if (pm->voltage.supported && perflvl->voltage) {
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vid = nouveau_volt_vid_lookup(dev, perflvl->voltage);
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if (vid < 0) {
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NV_DEBUG(dev, "drop perflvl %d, bad vid\n", i);
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entry += recordlen;
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continue;
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}
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}
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snprintf(perflvl->name, sizeof(perflvl->name),
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"performance_level_%d", i);
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perflvl->id = i;
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pm->nr_perflvl++;
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entry += recordlen;
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}
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}
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void
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nouveau_perf_fini(struct drm_device *dev)
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{
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}
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214
drivers/gpu/drm/nouveau/nouveau_pm.c
Normal file
214
drivers/gpu/drm/nouveau/nouveau_pm.c
Normal file
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@ -0,0 +1,214 @@
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/*
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* Copyright 2010 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "drmP.h"
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#include "nouveau_drv.h"
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#include "nouveau_pm.h"
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static int
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nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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int ret;
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if (!pm->clock_get)
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return -EINVAL;
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memset(perflvl, 0, sizeof(*perflvl));
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ret = pm->clock_get(dev, PLL_CORE);
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if (ret > 0)
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perflvl->core = ret;
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ret = pm->clock_get(dev, PLL_MEMORY);
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if (ret > 0)
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perflvl->memory = ret;
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ret = pm->clock_get(dev, PLL_SHADER);
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if (ret > 0)
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perflvl->shader = ret;
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ret = pm->clock_get(dev, PLL_UNK05);
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if (ret > 0)
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perflvl->unk05 = ret;
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if (pm->voltage.supported && pm->voltage_get) {
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ret = pm->voltage_get(dev);
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if (ret > 0)
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perflvl->voltage = ret;
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}
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return 0;
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}
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static void
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nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len)
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{
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char s[16], v[16], f[16];
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s[0] = '\0';
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if (perflvl->shader)
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snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000);
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v[0] = '\0';
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if (perflvl->voltage)
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snprintf(v, sizeof(v), " voltage %dmV", perflvl->voltage * 10);
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f[0] = '\0';
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if (perflvl->fanspeed)
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snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed);
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snprintf(ptr, len, "core %dMHz memory %dMHz%s%s%s\n",
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perflvl->core / 1000, perflvl->memory / 1000, s, v, f);
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}
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static ssize_t
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nouveau_pm_get_perflvl_info(struct device *d,
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struct device_attribute *a, char *buf)
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{
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struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a;
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char *ptr = buf;
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int len = PAGE_SIZE;
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snprintf(ptr, len, "%d: ", perflvl->id);
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ptr += strlen(buf);
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len -= strlen(buf);
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nouveau_pm_perflvl_info(perflvl, ptr, len);
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return strlen(buf);
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}
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static ssize_t
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nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf)
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{
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struct drm_device *dev = pci_get_drvdata(to_pci_dev(d));
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct nouveau_pm_level cur;
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int len = PAGE_SIZE, ret;
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char *ptr = buf;
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if (!pm->cur)
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snprintf(ptr, len, "setting: boot\n");
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else if (pm->cur == &pm->boot)
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snprintf(ptr, len, "setting: boot\nc: ");
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else
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snprintf(ptr, len, "setting: static %d\nc: ", pm->cur->id);
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ptr += strlen(buf);
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len -= strlen(buf);
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ret = nouveau_pm_perflvl_get(dev, &cur);
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if (ret == 0)
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nouveau_pm_perflvl_info(&cur, ptr, len);
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return strlen(buf);
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}
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static ssize_t
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nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a,
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const char *buf, size_t count)
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{
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return -EPERM;
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}
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DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR,
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nouveau_pm_get_perflvl, nouveau_pm_set_perflvl);
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int
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nouveau_pm_init(struct drm_device *dev)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct device *d = &dev->pdev->dev;
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char info[256];
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int ret, i;
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nouveau_volt_init(dev);
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nouveau_perf_init(dev);
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NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl);
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for (i = 0; i < pm->nr_perflvl; i++) {
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nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info));
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NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info);
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}
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/* determine current ("boot") performance level */
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ret = nouveau_pm_perflvl_get(dev, &pm->boot);
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if (ret == 0) {
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pm->cur = &pm->boot;
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nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info));
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NV_INFO(dev, "c: %s", info);
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}
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/* initialise sysfs */
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ret = device_create_file(d, &dev_attr_performance_level);
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if (ret)
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return ret;
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for (i = 0; i < pm->nr_perflvl; i++) {
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struct nouveau_pm_level *perflvl = &pm->perflvl[i];
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perflvl->dev_attr.attr.name = perflvl->name;
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perflvl->dev_attr.attr.mode = S_IRUGO;
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perflvl->dev_attr.show = nouveau_pm_get_perflvl_info;
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perflvl->dev_attr.store = NULL;
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sysfs_attr_init(&perflvl->dev_attr.attr);
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ret = device_create_file(d, &perflvl->dev_attr);
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if (ret) {
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NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n",
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perflvl->id, i);
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perflvl->dev_attr.attr.name = NULL;
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nouveau_pm_fini(dev);
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return ret;
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}
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}
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return 0;
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}
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void
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nouveau_pm_fini(struct drm_device *dev)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
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struct device *d = &dev->pdev->dev;
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int i;
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device_remove_file(d, &dev_attr_performance_level);
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for (i = 0; i < pm->nr_perflvl; i++) {
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struct nouveau_pm_level *pl = &pm->perflvl[i];
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if (!pl->dev_attr.attr.name)
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break;
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device_remove_file(d, &pl->dev_attr);
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}
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nouveau_perf_fini(dev);
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nouveau_volt_fini(dev);
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}
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|
44
drivers/gpu/drm/nouveau/nouveau_pm.h
Normal file
44
drivers/gpu/drm/nouveau/nouveau_pm.h
Normal file
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@ -0,0 +1,44 @@
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/*
|
||||
* Copyright 2010 Red Hat Inc.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
* copy of this software and associated documentation files (the "Software"),
|
||||
* to deal in the Software without restriction, including without limitation
|
||||
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
* and/or sell copies of the Software, and to permit persons to whom the
|
||||
* Software is furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||||
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||||
* OTHER DEALINGS IN THE SOFTWARE.
|
||||
*
|
||||
* Authors: Ben Skeggs
|
||||
*/
|
||||
|
||||
#ifndef __NOUVEAU_PM_H__
|
||||
#define __NOUVEAU_PM_H__
|
||||
|
||||
/* nouveau_pm.c */
|
||||
int nouveau_pm_init(struct drm_device *dev);
|
||||
void nouveau_pm_fini(struct drm_device *dev);
|
||||
|
||||
/* nouveau_volt.c */
|
||||
void nouveau_volt_init(struct drm_device *);
|
||||
void nouveau_volt_fini(struct drm_device *);
|
||||
int nouveau_volt_vid_lookup(struct drm_device *, int voltage);
|
||||
int nouveau_volt_lvl_lookup(struct drm_device *, int vid);
|
||||
int nouveau_voltage_gpio_get(struct drm_device *);
|
||||
int nouveau_voltage_gpio_set(struct drm_device *, int voltage);
|
||||
|
||||
/* nouveau_perf.c */
|
||||
void nouveau_perf_init(struct drm_device *);
|
||||
void nouveau_perf_fini(struct drm_device *);
|
||||
|
||||
#endif
|
|
@ -36,6 +36,7 @@
|
|||
#include "nouveau_drm.h"
|
||||
#include "nouveau_fbcon.h"
|
||||
#include "nouveau_ramht.h"
|
||||
#include "nouveau_pm.h"
|
||||
#include "nv50_display.h"
|
||||
|
||||
static void nouveau_stub_takedown(struct drm_device *dev) {}
|
||||
|
@ -527,6 +528,8 @@ nouveau_card_init(struct drm_device *dev)
|
|||
if (ret)
|
||||
goto out_display_early;
|
||||
|
||||
nouveau_pm_init(dev);
|
||||
|
||||
ret = nouveau_mem_vram_init(dev);
|
||||
if (ret)
|
||||
goto out_bios;
|
||||
|
@ -635,6 +638,7 @@ nouveau_card_init(struct drm_device *dev)
|
|||
out_vram:
|
||||
nouveau_mem_vram_fini(dev);
|
||||
out_bios:
|
||||
nouveau_pm_fini(dev);
|
||||
nouveau_bios_takedown(dev);
|
||||
out_display_early:
|
||||
engine->display.late_takedown(dev);
|
||||
|
@ -677,6 +681,7 @@ static void nouveau_card_takedown(struct drm_device *dev)
|
|||
|
||||
drm_irq_uninstall(dev);
|
||||
|
||||
nouveau_pm_fini(dev);
|
||||
nouveau_bios_takedown(dev);
|
||||
|
||||
vga_client_register(dev->pdev, NULL, NULL, NULL);
|
||||
|
|
209
drivers/gpu/drm/nouveau/nouveau_volt.c
Normal file
209
drivers/gpu/drm/nouveau/nouveau_volt.c
Normal file
|
@ -0,0 +1,209 @@
|
|||
/*
|
||||
* Copyright 2010 Red Hat Inc.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
* copy of this software and associated documentation files (the "Software"),
|
||||
* to deal in the Software without restriction, including without limitation
|
||||
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
* and/or sell copies of the Software, and to permit persons to whom the
|
||||
* Software is furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
|
||||
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
||||
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||||
* OTHER DEALINGS IN THE SOFTWARE.
|
||||
*
|
||||
* Authors: Ben Skeggs
|
||||
*/
|
||||
|
||||
#include "drmP.h"
|
||||
|
||||
#include "nouveau_drv.h"
|
||||
#include "nouveau_pm.h"
|
||||
|
||||
static const enum dcb_gpio_tag vidtag[] = { 0x04, 0x05, 0x06, 0x1a };
|
||||
static int nr_vidtag = sizeof(vidtag) / sizeof(vidtag[0]);
|
||||
|
||||
int
|
||||
nouveau_voltage_gpio_get(struct drm_device *dev)
|
||||
{
|
||||
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
||||
struct nouveau_gpio_engine *gpio = &dev_priv->engine.gpio;
|
||||
struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage;
|
||||
u8 vid = 0;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < nr_vidtag; i++) {
|
||||
if (!(volt->vid_mask & (1 << i)))
|
||||
continue;
|
||||
|
||||
vid |= gpio->get(dev, vidtag[i]) << i;
|
||||
}
|
||||
|
||||
return nouveau_volt_lvl_lookup(dev, vid);
|
||||
}
|
||||
|
||||
int
|
||||
nouveau_voltage_gpio_set(struct drm_device *dev, int voltage)
|
||||
{
|
||||
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
||||
struct nouveau_gpio_engine *gpio = &dev_priv->engine.gpio;
|
||||
struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage;
|
||||
int vid, i;
|
||||
|
||||
vid = nouveau_volt_vid_lookup(dev, voltage);
|
||||
if (vid < 0)
|
||||
return vid;
|
||||
|
||||
for (i = 0; i < nr_vidtag; i++) {
|
||||
if (!(volt->vid_mask & (1 << i)))
|
||||
continue;
|
||||
|
||||
gpio->set(dev, vidtag[i], !!(vid & (1 << i)));
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
nouveau_volt_vid_lookup(struct drm_device *dev, int voltage)
|
||||
{
|
||||
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
||||
struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < volt->nr_level; i++) {
|
||||
if (volt->level[i].voltage == voltage)
|
||||
return volt->level[i].vid;
|
||||
}
|
||||
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
int
|
||||
nouveau_volt_lvl_lookup(struct drm_device *dev, int vid)
|
||||
{
|
||||
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
||||
struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < volt->nr_level; i++) {
|
||||
if (volt->level[i].vid == vid)
|
||||
return volt->level[i].voltage;
|
||||
}
|
||||
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
void
|
||||
nouveau_volt_init(struct drm_device *dev)
|
||||
{
|
||||
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
||||
struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
|
||||
struct nouveau_pm_voltage *voltage = &pm->voltage;
|
||||
struct nvbios *bios = &dev_priv->vbios;
|
||||
struct bit_entry P;
|
||||
u8 *volt = NULL, *entry;
|
||||
int i, recordlen, entries, vidmask, vidshift;
|
||||
|
||||
if (bios->type == NVBIOS_BIT) {
|
||||
if (bit_table(dev, 'P', &P))
|
||||
return;
|
||||
|
||||
if (P.version == 1)
|
||||
volt = ROMPTR(bios, P.data[16]);
|
||||
else
|
||||
if (P.version == 2)
|
||||
volt = ROMPTR(bios, P.data[12]);
|
||||
else {
|
||||
NV_WARN(dev, "unknown volt for BIT P %d\n", P.version);
|
||||
}
|
||||
} else {
|
||||
if (bios->data[bios->offset + 6] < 0x27) {
|
||||
NV_DEBUG(dev, "BMP version too old for voltage\n");
|
||||
return;
|
||||
}
|
||||
|
||||
volt = ROMPTR(bios, bios->data[bios->offset + 0x98]);
|
||||
}
|
||||
|
||||
if (!volt) {
|
||||
NV_DEBUG(dev, "voltage table pointer invalid\n");
|
||||
return;
|
||||
}
|
||||
|
||||
switch (volt[0]) {
|
||||
case 0x10:
|
||||
case 0x11:
|
||||
case 0x12:
|
||||
recordlen = 5;
|
||||
entries = volt[2];
|
||||
vidshift = 0;
|
||||
vidmask = volt[4];
|
||||
break;
|
||||
case 0x20:
|
||||
recordlen = volt[3];
|
||||
entries = volt[2];
|
||||
vidshift = 0; /* could be vidshift like 0x30? */
|
||||
vidmask = volt[5];
|
||||
break;
|
||||
case 0x30:
|
||||
recordlen = volt[2];
|
||||
entries = volt[3];
|
||||
vidshift = hweight8(volt[5]);
|
||||
vidmask = volt[4];
|
||||
break;
|
||||
default:
|
||||
NV_WARN(dev, "voltage table 0x%02x unknown\n", volt[0]);
|
||||
return;
|
||||
}
|
||||
|
||||
/* validate vid mask */
|
||||
voltage->vid_mask = vidmask;
|
||||
if (!voltage->vid_mask)
|
||||
return;
|
||||
|
||||
i = 0;
|
||||
while (vidmask) {
|
||||
if (i > nr_vidtag) {
|
||||
NV_DEBUG(dev, "vid bit %d unknown\n", i);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!nouveau_bios_gpio_entry(dev, vidtag[i])) {
|
||||
NV_DEBUG(dev, "vid bit %d has no gpio tag\n", i);
|
||||
return;
|
||||
}
|
||||
|
||||
vidmask >>= 1;
|
||||
i++;
|
||||
}
|
||||
|
||||
/* parse vbios entries into common format */
|
||||
voltage->level = kcalloc(entries, sizeof(*voltage->level), GFP_KERNEL);
|
||||
if (!voltage->level)
|
||||
return;
|
||||
|
||||
entry = volt + volt[1];
|
||||
for (i = 0; i < entries; i++, entry += recordlen) {
|
||||
voltage->level[i].voltage = entry[0];
|
||||
voltage->level[i].vid = entry[1] >> vidshift;
|
||||
}
|
||||
voltage->nr_level = entries;
|
||||
voltage->supported = true;
|
||||
}
|
||||
|
||||
void
|
||||
nouveau_volt_fini(struct drm_device *dev)
|
||||
{
|
||||
struct drm_nouveau_private *dev_priv = dev->dev_private;
|
||||
struct nouveau_pm_voltage *volt = &dev_priv->engine.pm.voltage;
|
||||
|
||||
kfree(volt->level);
|
||||
}
|
Loading…
Reference in a new issue