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gpu: nvgpu: Add LDIV slowdown factor in INIT cmd.

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PMU ucode is updated to include LDIV slowdown factor in gr_init_param command.
- Defined a new version gr_init_param_v2.
- Updated the PMU FW version code.
- Set the LDIV slowdown factor to 0x1e by default.
- Added sysfs entry to program ldiv_slowdown factor at runtime.

Bug 200391931

Change-Id: Ic66049588c3b20e934faff3f29283f66c30303e4
Signed-off-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1674208
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Deepak Goyal
2018-05-07 11:42:33 +05:30
committed by mobile promotions
parent a1a8ceca0c
commit f9e55fbaf6
8 changed files with 130 additions and 9 deletions
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55
drivers/gpu/nvgpu/common/linux/sysfs.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2011-2017, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2011-2018, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@@ -504,6 +504,58 @@ static ssize_t elpg_enable_read(struct device *dev,
static DEVICE_ATTR(elpg_enable, ROOTRW, elpg_enable_read, elpg_enable_store);
static ssize_t ldiv_slowdown_factor_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct gk20a *g = get_gk20a(dev);
unsigned long val = 0;
int err;
if (kstrtoul(buf, 10, &val) < 0) {
nvgpu_err(g, "parse error for input SLOWDOWN factor\n");
return -EINVAL;
}
if (val >= SLOWDOWN_FACTOR_FPDIV_BYMAX) {
nvgpu_err(g, "Invalid SLOWDOWN factor\n");
return -EINVAL;
}
if (val == g->ldiv_slowdown_factor)
return count;
if (!g->power_on) {
g->ldiv_slowdown_factor = val;
} else {
err = gk20a_busy(g);
if (err)
return -EAGAIN;
g->ldiv_slowdown_factor = val;
if (g->ops.pmu.pmu_pg_init_param)
g->ops.pmu.pmu_pg_init_param(g,
PMU_PG_ELPG_ENGINE_ID_GRAPHICS);
gk20a_idle(g);
}
nvgpu_info(g, "ldiv_slowdown_factor is %x\n", g->ldiv_slowdown_factor);
return count;
}
static ssize_t ldiv_slowdown_factor_read(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct gk20a *g = get_gk20a(dev);
return snprintf(buf, PAGE_SIZE, "%d\n", g->ldiv_slowdown_factor);
}
static DEVICE_ATTR(ldiv_slowdown_factor, ROOTRW,
ldiv_slowdown_factor_read, ldiv_slowdown_factor_store);
static ssize_t mscg_enable_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
@@ -1114,6 +1166,7 @@ int nvgpu_create_sysfs(struct device *dev)
error |= device_create_file(dev, &dev_attr_elpg_enable);
error |= device_create_file(dev, &dev_attr_mscg_enable);
error |= device_create_file(dev, &dev_attr_emc3d_ratio);
error |= device_create_file(dev, &dev_attr_ldiv_slowdown_factor);
#ifdef CONFIG_TEGRA_DVFS
error |= device_create_file(dev, &dev_attr_fmax_at_vmin_safe);
#endif